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b49e97c9 | 1 | /* MIPS-specific support for ELF |
219d1afa | 2 | Copyright (C) 1993-2018 Free Software Foundation, Inc. |
b49e97c9 TS |
3 | |
4 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
5 | <ian@cygnus.com>. | |
6 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. | |
7 | <mark@codesourcery.com> | |
8 | Traditional MIPS targets support added by Koundinya.K, Dansk Data | |
9 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
10 | ||
ae9a127f | 11 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 12 | |
ae9a127f NC |
13 | This program is free software; you can redistribute it and/or modify |
14 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 15 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 16 | (at your option) any later version. |
b49e97c9 | 17 | |
ae9a127f NC |
18 | This program is distributed in the hope that it will be useful, |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
b49e97c9 | 22 | |
ae9a127f NC |
23 | You should have received a copy of the GNU General Public License |
24 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
25 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
26 | MA 02110-1301, USA. */ | |
27 | ||
b49e97c9 TS |
28 | |
29 | /* This file handles functionality common to the different MIPS ABI's. */ | |
30 | ||
b49e97c9 | 31 | #include "sysdep.h" |
3db64b00 | 32 | #include "bfd.h" |
b49e97c9 | 33 | #include "libbfd.h" |
64543e1a | 34 | #include "libiberty.h" |
b49e97c9 TS |
35 | #include "elf-bfd.h" |
36 | #include "elfxx-mips.h" | |
37 | #include "elf/mips.h" | |
0a44bf69 | 38 | #include "elf-vxworks.h" |
2f0c68f2 | 39 | #include "dwarf2.h" |
b49e97c9 TS |
40 | |
41 | /* Get the ECOFF swapping routines. */ | |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/mips.h" | |
46 | ||
b15e6682 AO |
47 | #include "hashtab.h" |
48 | ||
9ab066b4 RS |
49 | /* Types of TLS GOT entry. */ |
50 | enum mips_got_tls_type { | |
51 | GOT_TLS_NONE, | |
52 | GOT_TLS_GD, | |
53 | GOT_TLS_LDM, | |
54 | GOT_TLS_IE | |
55 | }; | |
56 | ||
ead49a57 | 57 | /* This structure is used to hold information about one GOT entry. |
3dff0dd1 RS |
58 | There are four types of entry: |
59 | ||
60 | (1) an absolute address | |
61 | requires: abfd == NULL | |
62 | fields: d.address | |
63 | ||
64 | (2) a SYMBOL + OFFSET address, where SYMBOL is local to an input bfd | |
65 | requires: abfd != NULL, symndx >= 0, tls_type != GOT_TLS_LDM | |
66 | fields: abfd, symndx, d.addend, tls_type | |
67 | ||
68 | (3) a SYMBOL address, where SYMBOL is not local to an input bfd | |
69 | requires: abfd != NULL, symndx == -1 | |
70 | fields: d.h, tls_type | |
71 | ||
72 | (4) a TLS LDM slot | |
73 | requires: abfd != NULL, symndx == 0, tls_type == GOT_TLS_LDM | |
74 | fields: none; there's only one of these per GOT. */ | |
b15e6682 AO |
75 | struct mips_got_entry |
76 | { | |
3dff0dd1 | 77 | /* One input bfd that needs the GOT entry. */ |
b15e6682 | 78 | bfd *abfd; |
f4416af6 AO |
79 | /* The index of the symbol, as stored in the relocation r_info, if |
80 | we have a local symbol; -1 otherwise. */ | |
81 | long symndx; | |
82 | union | |
83 | { | |
84 | /* If abfd == NULL, an address that must be stored in the got. */ | |
85 | bfd_vma address; | |
86 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
87 | that should be added to the symbol value. */ | |
88 | bfd_vma addend; | |
89 | /* If abfd != NULL && symndx == -1, the hash table entry | |
3dff0dd1 | 90 | corresponding to a symbol in the GOT. The symbol's entry |
020d7251 RS |
91 | is in the local area if h->global_got_area is GGA_NONE, |
92 | otherwise it is in the global area. */ | |
f4416af6 AO |
93 | struct mips_elf_link_hash_entry *h; |
94 | } d; | |
0f20cc35 | 95 | |
9ab066b4 RS |
96 | /* The TLS type of this GOT entry. An LDM GOT entry will be a local |
97 | symbol entry with r_symndx == 0. */ | |
0f20cc35 DJ |
98 | unsigned char tls_type; |
99 | ||
9ab066b4 RS |
100 | /* True if we have filled in the GOT contents for a TLS entry, |
101 | and created the associated relocations. */ | |
102 | unsigned char tls_initialized; | |
103 | ||
b15e6682 | 104 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
105 | corresponding to this symbol+addend. If it's a global symbol |
106 | whose offset is yet to be decided, it's going to be -1. */ | |
107 | long gotidx; | |
b15e6682 AO |
108 | }; |
109 | ||
13db6b44 RS |
110 | /* This structure represents a GOT page reference from an input bfd. |
111 | Each instance represents a symbol + ADDEND, where the representation | |
112 | of the symbol depends on whether it is local to the input bfd. | |
113 | If it is, then SYMNDX >= 0, and the symbol has index SYMNDX in U.ABFD. | |
114 | Otherwise, SYMNDX < 0 and U.H points to the symbol's hash table entry. | |
115 | ||
116 | Page references with SYMNDX >= 0 always become page references | |
117 | in the output. Page references with SYMNDX < 0 only become page | |
118 | references if the symbol binds locally; in other cases, the page | |
119 | reference decays to a global GOT reference. */ | |
120 | struct mips_got_page_ref | |
121 | { | |
122 | long symndx; | |
123 | union | |
124 | { | |
125 | struct mips_elf_link_hash_entry *h; | |
126 | bfd *abfd; | |
127 | } u; | |
128 | bfd_vma addend; | |
129 | }; | |
130 | ||
c224138d RS |
131 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
132 | The structures form a non-overlapping list that is sorted by increasing | |
133 | MIN_ADDEND. */ | |
134 | struct mips_got_page_range | |
135 | { | |
136 | struct mips_got_page_range *next; | |
137 | bfd_signed_vma min_addend; | |
138 | bfd_signed_vma max_addend; | |
139 | }; | |
140 | ||
141 | /* This structure describes the range of addends that are applied to page | |
13db6b44 | 142 | relocations against a given section. */ |
c224138d RS |
143 | struct mips_got_page_entry |
144 | { | |
13db6b44 RS |
145 | /* The section that these entries are based on. */ |
146 | asection *sec; | |
c224138d RS |
147 | /* The ranges for this page entry. */ |
148 | struct mips_got_page_range *ranges; | |
149 | /* The maximum number of page entries needed for RANGES. */ | |
150 | bfd_vma num_pages; | |
151 | }; | |
152 | ||
f0abc2a1 | 153 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
154 | |
155 | struct mips_got_info | |
156 | { | |
b49e97c9 TS |
157 | /* The number of global .got entries. */ |
158 | unsigned int global_gotno; | |
23cc69b6 RS |
159 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
160 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
161 | /* The number of .got slots used for TLS. */ |
162 | unsigned int tls_gotno; | |
163 | /* The first unused TLS .got entry. Used only during | |
164 | mips_elf_initialize_tls_index. */ | |
165 | unsigned int tls_assigned_gotno; | |
c224138d | 166 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 167 | unsigned int local_gotno; |
c224138d RS |
168 | /* The maximum number of page entries needed. */ |
169 | unsigned int page_gotno; | |
ab361d49 RS |
170 | /* The number of relocations needed for the GOT entries. */ |
171 | unsigned int relocs; | |
cb22ccf4 KCY |
172 | /* The first unused local .got entry. */ |
173 | unsigned int assigned_low_gotno; | |
174 | /* The last unused local .got entry. */ | |
175 | unsigned int assigned_high_gotno; | |
b15e6682 AO |
176 | /* A hash table holding members of the got. */ |
177 | struct htab *got_entries; | |
13db6b44 RS |
178 | /* A hash table holding mips_got_page_ref structures. */ |
179 | struct htab *got_page_refs; | |
c224138d RS |
180 | /* A hash table of mips_got_page_entry structures. */ |
181 | struct htab *got_page_entries; | |
f4416af6 AO |
182 | /* In multi-got links, a pointer to the next got (err, rather, most |
183 | of the time, it points to the previous got). */ | |
184 | struct mips_got_info *next; | |
185 | }; | |
186 | ||
d7206569 | 187 | /* Structure passed when merging bfds' gots. */ |
f4416af6 AO |
188 | |
189 | struct mips_elf_got_per_bfd_arg | |
190 | { | |
f4416af6 AO |
191 | /* The output bfd. */ |
192 | bfd *obfd; | |
193 | /* The link information. */ | |
194 | struct bfd_link_info *info; | |
195 | /* A pointer to the primary got, i.e., the one that's going to get | |
196 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
197 | DT_MIPS_GOTSYM. */ | |
198 | struct mips_got_info *primary; | |
199 | /* A non-primary got we're trying to merge with other input bfd's | |
200 | gots. */ | |
201 | struct mips_got_info *current; | |
202 | /* The maximum number of got entries that can be addressed with a | |
203 | 16-bit offset. */ | |
204 | unsigned int max_count; | |
c224138d RS |
205 | /* The maximum number of page entries needed by each got. */ |
206 | unsigned int max_pages; | |
0f20cc35 DJ |
207 | /* The total number of global entries which will live in the |
208 | primary got and be automatically relocated. This includes | |
209 | those not referenced by the primary GOT but included in | |
210 | the "master" GOT. */ | |
211 | unsigned int global_count; | |
f4416af6 AO |
212 | }; |
213 | ||
ab361d49 RS |
214 | /* A structure used to pass information to htab_traverse callbacks |
215 | when laying out the GOT. */ | |
f4416af6 | 216 | |
ab361d49 | 217 | struct mips_elf_traverse_got_arg |
f4416af6 | 218 | { |
ab361d49 | 219 | struct bfd_link_info *info; |
f4416af6 AO |
220 | struct mips_got_info *g; |
221 | int value; | |
0f20cc35 DJ |
222 | }; |
223 | ||
f0abc2a1 AM |
224 | struct _mips_elf_section_data |
225 | { | |
226 | struct bfd_elf_section_data elf; | |
227 | union | |
228 | { | |
f0abc2a1 AM |
229 | bfd_byte *tdata; |
230 | } u; | |
231 | }; | |
232 | ||
233 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 234 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 235 | |
d5eaccd7 RS |
236 | #define is_mips_elf(bfd) \ |
237 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
238 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 239 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 240 | |
634835ae RS |
241 | /* The ABI says that every symbol used by dynamic relocations must have |
242 | a global GOT entry. Among other things, this provides the dynamic | |
243 | linker with a free, directly-indexed cache. The GOT can therefore | |
244 | contain symbols that are not referenced by GOT relocations themselves | |
245 | (in other words, it may have symbols that are not referenced by things | |
246 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
247 | ||
248 | GOT relocations are less likely to overflow if we put the associated | |
249 | GOT entries towards the beginning. We therefore divide the global | |
250 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
251 | the first area can be used for both dynamic relocations and GP-relative | |
252 | accesses, while those in the "reloc-only" area are for dynamic | |
253 | relocations only. | |
254 | ||
255 | These GGA_* ("Global GOT Area") values are organised so that lower | |
256 | values are more general than higher values. Also, non-GGA_NONE | |
257 | values are ordered by the position of the area in the GOT. */ | |
258 | #define GGA_NORMAL 0 | |
259 | #define GGA_RELOC_ONLY 1 | |
260 | #define GGA_NONE 2 | |
261 | ||
861fb55a DJ |
262 | /* Information about a non-PIC interface to a PIC function. There are |
263 | two ways of creating these interfaces. The first is to add: | |
264 | ||
265 | lui $25,%hi(func) | |
266 | addiu $25,$25,%lo(func) | |
267 | ||
268 | immediately before a PIC function "func". The second is to add: | |
269 | ||
270 | lui $25,%hi(func) | |
271 | j func | |
272 | addiu $25,$25,%lo(func) | |
273 | ||
274 | to a separate trampoline section. | |
275 | ||
276 | Stubs of the first kind go in a new section immediately before the | |
277 | target function. Stubs of the second kind go in a single section | |
278 | pointed to by the hash table's "strampoline" field. */ | |
279 | struct mips_elf_la25_stub { | |
280 | /* The generated section that contains this stub. */ | |
281 | asection *stub_section; | |
282 | ||
283 | /* The offset of the stub from the start of STUB_SECTION. */ | |
284 | bfd_vma offset; | |
285 | ||
286 | /* One symbol for the original function. Its location is available | |
287 | in H->root.root.u.def. */ | |
288 | struct mips_elf_link_hash_entry *h; | |
289 | }; | |
290 | ||
291 | /* Macros for populating a mips_elf_la25_stub. */ | |
292 | ||
293 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
294 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
295 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
d21911ea MR |
296 | #define LA25_LUI_MICROMIPS(VAL) \ |
297 | (0x41b90000 | (VAL)) /* lui t9,VAL */ | |
298 | #define LA25_J_MICROMIPS(VAL) \ | |
299 | (0xd4000000 | (((VAL) >> 1) & 0x3ffffff)) /* j VAL */ | |
300 | #define LA25_ADDIU_MICROMIPS(VAL) \ | |
301 | (0x33390000 | (VAL)) /* addiu t9,t9,VAL */ | |
861fb55a | 302 | |
b49e97c9 TS |
303 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
304 | the dynamic symbols. */ | |
305 | ||
306 | struct mips_elf_hash_sort_data | |
307 | { | |
308 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
309 | index. */ | |
310 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
311 | /* The least dynamic symbol table index corresponding to a non-TLS |
312 | symbol with a GOT entry. */ | |
55f8b9d2 | 313 | bfd_size_type min_got_dynindx; |
f4416af6 AO |
314 | /* The greatest dynamic symbol table index corresponding to a symbol |
315 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 316 | with dynamic relocations pointing to it from non-primary GOTs). */ |
55f8b9d2 | 317 | bfd_size_type max_unref_got_dynindx; |
e17b0c35 MR |
318 | /* The greatest dynamic symbol table index corresponding to a local |
319 | symbol. */ | |
320 | bfd_size_type max_local_dynindx; | |
321 | /* The greatest dynamic symbol table index corresponding to an external | |
b49e97c9 | 322 | symbol without a GOT entry. */ |
55f8b9d2 | 323 | bfd_size_type max_non_got_dynindx; |
b49e97c9 TS |
324 | }; |
325 | ||
1bbce132 MR |
326 | /* We make up to two PLT entries if needed, one for standard MIPS code |
327 | and one for compressed code, either a MIPS16 or microMIPS one. We | |
328 | keep a separate record of traditional lazy-binding stubs, for easier | |
329 | processing. */ | |
330 | ||
331 | struct plt_entry | |
332 | { | |
333 | /* Traditional SVR4 stub offset, or -1 if none. */ | |
334 | bfd_vma stub_offset; | |
335 | ||
336 | /* Standard PLT entry offset, or -1 if none. */ | |
337 | bfd_vma mips_offset; | |
338 | ||
339 | /* Compressed PLT entry offset, or -1 if none. */ | |
340 | bfd_vma comp_offset; | |
341 | ||
342 | /* The corresponding .got.plt index, or -1 if none. */ | |
343 | bfd_vma gotplt_index; | |
344 | ||
345 | /* Whether we need a standard PLT entry. */ | |
346 | unsigned int need_mips : 1; | |
347 | ||
348 | /* Whether we need a compressed PLT entry. */ | |
349 | unsigned int need_comp : 1; | |
350 | }; | |
351 | ||
b49e97c9 TS |
352 | /* The MIPS ELF linker needs additional information for each symbol in |
353 | the global hash table. */ | |
354 | ||
355 | struct mips_elf_link_hash_entry | |
356 | { | |
357 | struct elf_link_hash_entry root; | |
358 | ||
359 | /* External symbol information. */ | |
360 | EXTR esym; | |
361 | ||
861fb55a DJ |
362 | /* The la25 stub we have created for ths symbol, if any. */ |
363 | struct mips_elf_la25_stub *la25_stub; | |
364 | ||
b49e97c9 TS |
365 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
366 | this symbol. */ | |
367 | unsigned int possibly_dynamic_relocs; | |
368 | ||
b49e97c9 TS |
369 | /* If there is a stub that 32 bit functions should use to call this |
370 | 16 bit function, this points to the section containing the stub. */ | |
371 | asection *fn_stub; | |
372 | ||
b49e97c9 TS |
373 | /* If there is a stub that 16 bit functions should use to call this |
374 | 32 bit function, this points to the section containing the stub. */ | |
375 | asection *call_stub; | |
376 | ||
377 | /* This is like the call_stub field, but it is used if the function | |
378 | being called returns a floating point value. */ | |
379 | asection *call_fp_stub; | |
7c5fcef7 | 380 | |
634835ae RS |
381 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
382 | unsigned int global_got_area : 2; | |
383 | ||
6ccf4795 RS |
384 | /* True if all GOT relocations against this symbol are for calls. This is |
385 | a looser condition than no_fn_stub below, because there may be other | |
386 | non-call non-GOT relocations against the symbol. */ | |
387 | unsigned int got_only_for_calls : 1; | |
388 | ||
71782a75 RS |
389 | /* True if one of the relocations described by possibly_dynamic_relocs |
390 | is against a readonly section. */ | |
391 | unsigned int readonly_reloc : 1; | |
392 | ||
861fb55a DJ |
393 | /* True if there is a relocation against this symbol that must be |
394 | resolved by the static linker (in other words, if the relocation | |
395 | cannot possibly be made dynamic). */ | |
396 | unsigned int has_static_relocs : 1; | |
397 | ||
71782a75 RS |
398 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
399 | This is set, for example, if there are relocations related to | |
400 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
401 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
402 | unsigned int no_fn_stub : 1; | |
403 | ||
404 | /* Whether we need the fn_stub; this is true if this symbol appears | |
405 | in any relocs other than a 16 bit call. */ | |
406 | unsigned int need_fn_stub : 1; | |
407 | ||
861fb55a DJ |
408 | /* True if this symbol is referenced by branch relocations from |
409 | any non-PIC input file. This is used to determine whether an | |
410 | la25 stub is required. */ | |
411 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
412 | |
413 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
414 | (as opposed to a PLT entry)? */ | |
415 | unsigned int needs_lazy_stub : 1; | |
1bbce132 MR |
416 | |
417 | /* Does this symbol resolve to a PLT entry? */ | |
418 | unsigned int use_plt_entry : 1; | |
b49e97c9 TS |
419 | }; |
420 | ||
421 | /* MIPS ELF linker hash table. */ | |
422 | ||
423 | struct mips_elf_link_hash_table | |
424 | { | |
425 | struct elf_link_hash_table root; | |
861fb55a | 426 | |
b49e97c9 TS |
427 | /* The number of .rtproc entries. */ |
428 | bfd_size_type procedure_count; | |
861fb55a | 429 | |
b49e97c9 TS |
430 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
431 | bfd_size_type compact_rel_size; | |
861fb55a | 432 | |
e6aea42d MR |
433 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic entry |
434 | is set to the address of __rld_obj_head as in IRIX5 and IRIX6. */ | |
b34976b6 | 435 | bfd_boolean use_rld_obj_head; |
861fb55a | 436 | |
b4082c70 DD |
437 | /* The __rld_map or __rld_obj_head symbol. */ |
438 | struct elf_link_hash_entry *rld_symbol; | |
861fb55a | 439 | |
b49e97c9 | 440 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 441 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
442 | |
443 | /* True if we can generate copy relocs and PLTs. */ | |
444 | bfd_boolean use_plts_and_copy_relocs; | |
445 | ||
833794fc MR |
446 | /* True if we can only use 32-bit microMIPS instructions. */ |
447 | bfd_boolean insn32; | |
448 | ||
8b10b0b3 MR |
449 | /* True if we suppress checks for invalid branches between ISA modes. */ |
450 | bfd_boolean ignore_branch_isa; | |
451 | ||
0a44bf69 RS |
452 | /* True if we're generating code for VxWorks. */ |
453 | bfd_boolean is_vxworks; | |
861fb55a | 454 | |
0e53d9da AN |
455 | /* True if we already reported the small-data section overflow. */ |
456 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 457 | |
47275900 MR |
458 | /* True if we use the special `__gnu_absolute_zero' symbol. */ |
459 | bfd_boolean use_absolute_zero; | |
460 | ||
461 | /* True if we have been configured for a GNU target. */ | |
462 | bfd_boolean gnu_target; | |
463 | ||
0a44bf69 RS |
464 | /* Shortcuts to some dynamic sections, or NULL if they are not |
465 | being used. */ | |
0a44bf69 | 466 | asection *srelplt2; |
4e41d0d7 | 467 | asection *sstubs; |
861fb55a | 468 | |
a8028dd0 RS |
469 | /* The master GOT information. */ |
470 | struct mips_got_info *got_info; | |
861fb55a | 471 | |
d222d210 RS |
472 | /* The global symbol in the GOT with the lowest index in the dynamic |
473 | symbol table. */ | |
474 | struct elf_link_hash_entry *global_gotsym; | |
475 | ||
861fb55a | 476 | /* The size of the PLT header in bytes. */ |
0a44bf69 | 477 | bfd_vma plt_header_size; |
861fb55a | 478 | |
1bbce132 MR |
479 | /* The size of a standard PLT entry in bytes. */ |
480 | bfd_vma plt_mips_entry_size; | |
481 | ||
482 | /* The size of a compressed PLT entry in bytes. */ | |
483 | bfd_vma plt_comp_entry_size; | |
484 | ||
485 | /* The offset of the next standard PLT entry to create. */ | |
486 | bfd_vma plt_mips_offset; | |
487 | ||
488 | /* The offset of the next compressed PLT entry to create. */ | |
489 | bfd_vma plt_comp_offset; | |
490 | ||
491 | /* The index of the next .got.plt entry to create. */ | |
492 | bfd_vma plt_got_index; | |
861fb55a | 493 | |
33bb52fb RS |
494 | /* The number of functions that need a lazy-binding stub. */ |
495 | bfd_vma lazy_stub_count; | |
861fb55a | 496 | |
5108fc1b RS |
497 | /* The size of a function stub entry in bytes. */ |
498 | bfd_vma function_stub_size; | |
861fb55a DJ |
499 | |
500 | /* The number of reserved entries at the beginning of the GOT. */ | |
501 | unsigned int reserved_gotno; | |
502 | ||
503 | /* The section used for mips_elf_la25_stub trampolines. | |
504 | See the comment above that structure for details. */ | |
505 | asection *strampoline; | |
506 | ||
507 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
508 | pairs. */ | |
509 | htab_t la25_stubs; | |
510 | ||
511 | /* A function FN (NAME, IS, OS) that creates a new input section | |
512 | called NAME and links it to output section OS. If IS is nonnull, | |
513 | the new section should go immediately before it, otherwise it | |
514 | should go at the (current) beginning of OS. | |
515 | ||
516 | The function returns the new section on success, otherwise it | |
517 | returns null. */ | |
518 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
13db6b44 RS |
519 | |
520 | /* Small local sym cache. */ | |
521 | struct sym_cache sym_cache; | |
1bbce132 MR |
522 | |
523 | /* Is the PLT header compressed? */ | |
524 | unsigned int plt_header_is_comp : 1; | |
861fb55a DJ |
525 | }; |
526 | ||
4dfe6ac6 NC |
527 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
528 | ||
529 | #define mips_elf_hash_table(p) \ | |
530 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
531 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
532 | ||
861fb55a | 533 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
534 | struct mips_htab_traverse_info |
535 | { | |
861fb55a DJ |
536 | /* The usual link-wide information. */ |
537 | struct bfd_link_info *info; | |
538 | bfd *output_bfd; | |
539 | ||
540 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
541 | bfd_boolean error; | |
b49e97c9 TS |
542 | }; |
543 | ||
6ae68ba3 MR |
544 | /* MIPS ELF private object data. */ |
545 | ||
546 | struct mips_elf_obj_tdata | |
547 | { | |
548 | /* Generic ELF private object data. */ | |
549 | struct elf_obj_tdata root; | |
550 | ||
551 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
552 | bfd *abi_fp_bfd; | |
ee227692 | 553 | |
b60bf9be CF |
554 | /* Input BFD providing Tag_GNU_MIPS_ABI_MSA attribute for output. */ |
555 | bfd *abi_msa_bfd; | |
556 | ||
351cdf24 MF |
557 | /* The abiflags for this object. */ |
558 | Elf_Internal_ABIFlags_v0 abiflags; | |
559 | bfd_boolean abiflags_valid; | |
560 | ||
ee227692 RS |
561 | /* The GOT requirements of input bfds. */ |
562 | struct mips_got_info *got; | |
698600e4 AM |
563 | |
564 | /* Used by _bfd_mips_elf_find_nearest_line. The structure could be | |
565 | included directly in this one, but there's no point to wasting | |
566 | the memory just for the infrequently called find_nearest_line. */ | |
567 | struct mips_elf_find_line *find_line_info; | |
568 | ||
569 | /* An array of stub sections indexed by symbol number. */ | |
570 | asection **local_stubs; | |
571 | asection **local_call_stubs; | |
572 | ||
573 | /* The Irix 5 support uses two virtual sections, which represent | |
574 | text/data symbols defined in dynamic objects. */ | |
575 | asymbol *elf_data_symbol; | |
576 | asymbol *elf_text_symbol; | |
577 | asection *elf_data_section; | |
578 | asection *elf_text_section; | |
6ae68ba3 MR |
579 | }; |
580 | ||
581 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
582 | ||
583 | #define mips_elf_tdata(bfd) \ | |
584 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
585 | ||
0f20cc35 DJ |
586 | #define TLS_RELOC_P(r_type) \ |
587 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
588 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
589 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
590 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
591 | || r_type == R_MIPS_TLS_GD \ | |
592 | || r_type == R_MIPS_TLS_LDM \ | |
593 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
594 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
595 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
596 | || r_type == R_MIPS_TLS_TPREL32 \ | |
597 | || r_type == R_MIPS_TLS_TPREL64 \ | |
598 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 599 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
600 | || r_type == R_MIPS16_TLS_GD \ |
601 | || r_type == R_MIPS16_TLS_LDM \ | |
602 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
603 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
604 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
605 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
606 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
607 | || r_type == R_MICROMIPS_TLS_GD \ |
608 | || r_type == R_MICROMIPS_TLS_LDM \ | |
609 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
610 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
611 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
612 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
613 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 614 | |
b49e97c9 TS |
615 | /* Structure used to pass information to mips_elf_output_extsym. */ |
616 | ||
617 | struct extsym_info | |
618 | { | |
9e4aeb93 RS |
619 | bfd *abfd; |
620 | struct bfd_link_info *info; | |
b49e97c9 TS |
621 | struct ecoff_debug_info *debug; |
622 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 623 | bfd_boolean failed; |
b49e97c9 TS |
624 | }; |
625 | ||
8dc1a139 | 626 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
627 | |
628 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
629 | { | |
630 | "_procedure_table", | |
631 | "_procedure_string_table", | |
632 | "_procedure_table_size", | |
633 | NULL | |
634 | }; | |
635 | ||
636 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 637 | IRIX5. */ |
b49e97c9 TS |
638 | |
639 | typedef struct | |
640 | { | |
641 | unsigned long id1; /* Always one? */ | |
642 | unsigned long num; /* Number of compact relocation entries. */ | |
643 | unsigned long id2; /* Always two? */ | |
644 | unsigned long offset; /* The file offset of the first relocation. */ | |
645 | unsigned long reserved0; /* Zero? */ | |
646 | unsigned long reserved1; /* Zero? */ | |
647 | } Elf32_compact_rel; | |
648 | ||
649 | typedef struct | |
650 | { | |
651 | bfd_byte id1[4]; | |
652 | bfd_byte num[4]; | |
653 | bfd_byte id2[4]; | |
654 | bfd_byte offset[4]; | |
655 | bfd_byte reserved0[4]; | |
656 | bfd_byte reserved1[4]; | |
657 | } Elf32_External_compact_rel; | |
658 | ||
659 | typedef struct | |
660 | { | |
661 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
662 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
663 | unsigned int dist2to : 8; | |
664 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
665 | unsigned long konst; /* KONST field. See below. */ | |
666 | unsigned long vaddr; /* VADDR to be relocated. */ | |
667 | } Elf32_crinfo; | |
668 | ||
669 | typedef struct | |
670 | { | |
671 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
672 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
673 | unsigned int dist2to : 8; | |
674 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
675 | unsigned long konst; /* KONST field. See below. */ | |
676 | } Elf32_crinfo2; | |
677 | ||
678 | typedef struct | |
679 | { | |
680 | bfd_byte info[4]; | |
681 | bfd_byte konst[4]; | |
682 | bfd_byte vaddr[4]; | |
683 | } Elf32_External_crinfo; | |
684 | ||
685 | typedef struct | |
686 | { | |
687 | bfd_byte info[4]; | |
688 | bfd_byte konst[4]; | |
689 | } Elf32_External_crinfo2; | |
690 | ||
691 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
692 | ||
693 | #define CRINFO_CTYPE (0x1) | |
694 | #define CRINFO_CTYPE_SH (31) | |
695 | #define CRINFO_RTYPE (0xf) | |
696 | #define CRINFO_RTYPE_SH (27) | |
697 | #define CRINFO_DIST2TO (0xff) | |
698 | #define CRINFO_DIST2TO_SH (19) | |
699 | #define CRINFO_RELVADDR (0x7ffff) | |
700 | #define CRINFO_RELVADDR_SH (0) | |
701 | ||
702 | /* A compact relocation info has long (3 words) or short (2 words) | |
703 | formats. A short format doesn't have VADDR field and relvaddr | |
704 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
705 | #define CRF_MIPS_LONG 1 | |
706 | #define CRF_MIPS_SHORT 0 | |
707 | ||
708 | /* There are 4 types of compact relocation at least. The value KONST | |
709 | has different meaning for each type: | |
710 | ||
711 | (type) (konst) | |
712 | CT_MIPS_REL32 Address in data | |
713 | CT_MIPS_WORD Address in word (XXX) | |
714 | CT_MIPS_GPHI_LO GP - vaddr | |
715 | CT_MIPS_JMPAD Address to jump | |
716 | */ | |
717 | ||
718 | #define CRT_MIPS_REL32 0xa | |
719 | #define CRT_MIPS_WORD 0xb | |
720 | #define CRT_MIPS_GPHI_LO 0xc | |
721 | #define CRT_MIPS_JMPAD 0xd | |
722 | ||
723 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
724 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
725 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
726 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
727 | \f | |
728 | /* The structure of the runtime procedure descriptor created by the | |
729 | loader for use by the static exception system. */ | |
730 | ||
731 | typedef struct runtime_pdr { | |
ae9a127f NC |
732 | bfd_vma adr; /* Memory address of start of procedure. */ |
733 | long regmask; /* Save register mask. */ | |
734 | long regoffset; /* Save register offset. */ | |
735 | long fregmask; /* Save floating point register mask. */ | |
736 | long fregoffset; /* Save floating point register offset. */ | |
737 | long frameoffset; /* Frame size. */ | |
738 | short framereg; /* Frame pointer register. */ | |
739 | short pcreg; /* Offset or reg of return pc. */ | |
740 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 741 | long reserved; |
ae9a127f | 742 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
743 | } RPDR, *pRPDR; |
744 | #define cbRPDR sizeof (RPDR) | |
745 | #define rpdNil ((pRPDR) 0) | |
746 | \f | |
b15e6682 | 747 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
748 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
749 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 750 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 751 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
752 | static bfd_vma mips_elf_high |
753 | (bfd_vma); | |
b34976b6 | 754 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
755 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
756 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
757 | bfd_vma *, asection *); | |
f4416af6 | 758 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 759 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 760 | |
b49e97c9 TS |
761 | /* This will be used when we sort the dynamic relocation records. */ |
762 | static bfd *reldyn_sorting_bfd; | |
763 | ||
6d30f5b2 NC |
764 | /* True if ABFD is for CPUs with load interlocking that include |
765 | non-MIPS1 CPUs and R3900. */ | |
766 | #define LOAD_INTERLOCKS_P(abfd) \ | |
767 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
768 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
769 | ||
cd8d5a82 CF |
770 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
771 | This should be safe for all architectures. We enable this predicate | |
772 | for RM9000 for now. */ | |
773 | #define JAL_TO_BAL_P(abfd) \ | |
774 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
775 | ||
776 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
777 | This should be safe for all architectures. We enable this predicate for | |
778 | all CPUs. */ | |
779 | #define JALR_TO_BAL_P(abfd) 1 | |
780 | ||
38a7df63 CF |
781 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
782 | This should be safe for all architectures. We enable this predicate for | |
783 | all CPUs. */ | |
784 | #define JR_TO_B_P(abfd) 1 | |
785 | ||
861fb55a DJ |
786 | /* True if ABFD is a PIC object. */ |
787 | #define PIC_OBJECT_P(abfd) \ | |
788 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
789 | ||
351cdf24 MF |
790 | /* Nonzero if ABFD is using the O32 ABI. */ |
791 | #define ABI_O32_P(abfd) \ | |
792 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
793 | ||
b49e97c9 | 794 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
795 | #define ABI_N32_P(abfd) \ |
796 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
797 | ||
4a14403c | 798 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 799 | #define ABI_64_P(abfd) \ |
141ff970 | 800 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 801 | |
4a14403c TS |
802 | /* Nonzero if ABFD is using NewABI conventions. */ |
803 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
804 | ||
e8faf7d1 MR |
805 | /* Nonzero if ABFD has microMIPS code. */ |
806 | #define MICROMIPS_P(abfd) \ | |
807 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0) | |
808 | ||
7361da2c AB |
809 | /* Nonzero if ABFD is MIPS R6. */ |
810 | #define MIPSR6_P(abfd) \ | |
811 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6 \ | |
812 | || (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
813 | ||
4a14403c | 814 | /* The IRIX compatibility level we are striving for. */ |
b49e97c9 TS |
815 | #define IRIX_COMPAT(abfd) \ |
816 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
817 | ||
b49e97c9 TS |
818 | /* Whether we are trying to be compatible with IRIX at all. */ |
819 | #define SGI_COMPAT(abfd) \ | |
820 | (IRIX_COMPAT (abfd) != ict_none) | |
821 | ||
822 | /* The name of the options section. */ | |
823 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 824 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 825 | |
cc2e31b9 RS |
826 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
827 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
828 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
829 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
830 | ||
351cdf24 MF |
831 | /* True if NAME is the recognized name of any SHT_MIPS_ABIFLAGS section. */ |
832 | #define MIPS_ELF_ABIFLAGS_SECTION_NAME_P(NAME) \ | |
833 | (strcmp (NAME, ".MIPS.abiflags") == 0) | |
834 | ||
943284cc DJ |
835 | /* Whether the section is readonly. */ |
836 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
837 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
838 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
839 | ||
b49e97c9 | 840 | /* The name of the stub section. */ |
ca07892d | 841 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
842 | |
843 | /* The size of an external REL relocation. */ | |
844 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
845 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
846 | ||
0a44bf69 RS |
847 | /* The size of an external RELA relocation. */ |
848 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
849 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
850 | ||
b49e97c9 TS |
851 | /* The size of an external dynamic table entry. */ |
852 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
853 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
854 | ||
855 | /* The size of a GOT entry. */ | |
856 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
857 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
858 | ||
b4082c70 DD |
859 | /* The size of the .rld_map section. */ |
860 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
861 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
862 | ||
b49e97c9 TS |
863 | /* The size of a symbol-table entry. */ |
864 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
865 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
866 | ||
867 | /* The default alignment for sections, as a power of two. */ | |
868 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 869 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
870 | |
871 | /* Get word-sized data. */ | |
872 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
873 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
874 | ||
875 | /* Put out word-sized data. */ | |
876 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
07d6d2b8 AM |
877 | (ABI_64_P (abfd) \ |
878 | ? bfd_put_64 (abfd, val, ptr) \ | |
b49e97c9 TS |
879 | : bfd_put_32 (abfd, val, ptr)) |
880 | ||
861fb55a DJ |
881 | /* The opcode for word-sized loads (LW or LD). */ |
882 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
883 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
884 | ||
b49e97c9 | 885 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 886 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 887 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
888 | |
889 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
0aa13fee | 890 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (abfd, rtype, rela)) |
b49e97c9 | 891 | |
0a44bf69 RS |
892 | /* The name of the dynamic relocation section. */ |
893 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
894 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
895 | ||
b49e97c9 TS |
896 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
897 | from smaller values. Start with zero, widen, *then* decrement. */ | |
898 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 899 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 900 | |
51e38d68 RS |
901 | /* The value to write into got[1] for SVR4 targets, to identify it is |
902 | a GNU object. The dynamic linker can then use got[1] to store the | |
903 | module pointer. */ | |
904 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
905 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
906 | ||
f4416af6 | 907 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
908 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
909 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
910 | |
911 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
912 | offsets from $gp. */ | |
0a44bf69 | 913 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 914 | |
6a691779 | 915 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
916 | #define STUB_LW(abfd) \ |
917 | ((ABI_64_P (abfd) \ | |
918 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
07d6d2b8 | 919 | : 0x8f998010)) /* lw t9,0x8010(gp) */ |
40fc1451 | 920 | #define STUB_MOVE 0x03e07825 /* or t7,ra,zero */ |
3d6746ca | 921 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ |
a18a2a34 | 922 | #define STUB_JALR 0x0320f809 /* jalr ra,t9 */ |
5108fc1b RS |
923 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
924 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
925 | #define STUB_LI16S(abfd, VAL) \ |
926 | ((ABI_64_P (abfd) \ | |
927 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
928 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
929 | ||
1bbce132 MR |
930 | /* Likewise for the microMIPS ASE. */ |
931 | #define STUB_LW_MICROMIPS(abfd) \ | |
932 | (ABI_64_P (abfd) \ | |
933 | ? 0xdf3c8010 /* ld t9,0x8010(gp) */ \ | |
934 | : 0xff3c8010) /* lw t9,0x8010(gp) */ | |
935 | #define STUB_MOVE_MICROMIPS 0x0dff /* move t7,ra */ | |
40fc1451 | 936 | #define STUB_MOVE32_MICROMIPS 0x001f7a90 /* or t7,ra,zero */ |
1bbce132 MR |
937 | #define STUB_LUI_MICROMIPS(VAL) \ |
938 | (0x41b80000 + (VAL)) /* lui t8,VAL */ | |
939 | #define STUB_JALR_MICROMIPS 0x45d9 /* jalr t9 */ | |
833794fc | 940 | #define STUB_JALR32_MICROMIPS 0x03f90f3c /* jalr ra,t9 */ |
1bbce132 MR |
941 | #define STUB_ORI_MICROMIPS(VAL) \ |
942 | (0x53180000 + (VAL)) /* ori t8,t8,VAL */ | |
943 | #define STUB_LI16U_MICROMIPS(VAL) \ | |
944 | (0x53000000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
945 | #define STUB_LI16S_MICROMIPS(abfd, VAL) \ | |
946 | (ABI_64_P (abfd) \ | |
947 | ? 0x5f000000 + (VAL) /* daddiu t8,zero,VAL sign extended */ \ | |
948 | : 0x33000000 + (VAL)) /* addiu t8,zero,VAL sign extended */ | |
949 | ||
5108fc1b RS |
950 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
951 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
1bbce132 MR |
952 | #define MICROMIPS_FUNCTION_STUB_NORMAL_SIZE 12 |
953 | #define MICROMIPS_FUNCTION_STUB_BIG_SIZE 16 | |
833794fc MR |
954 | #define MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE 16 |
955 | #define MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
956 | |
957 | /* The name of the dynamic interpreter. This is put in the .interp | |
958 | section. */ | |
959 | ||
07d6d2b8 AM |
960 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ |
961 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
962 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
b49e97c9 TS |
963 | : "/usr/lib/libc.so.1") |
964 | ||
965 | #ifdef BFD64 | |
ee6423ed AO |
966 | #define MNAME(bfd,pre,pos) \ |
967 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
968 | #define ELF_R_SYM(bfd, i) \ |
969 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
970 | #define ELF_R_TYPE(bfd, i) \ | |
971 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
972 | #define ELF_R_INFO(bfd, s, t) \ | |
973 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
974 | #else | |
ee6423ed | 975 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
976 | #define ELF_R_SYM(bfd, i) \ |
977 | (ELF32_R_SYM (i)) | |
978 | #define ELF_R_TYPE(bfd, i) \ | |
979 | (ELF32_R_TYPE (i)) | |
980 | #define ELF_R_INFO(bfd, s, t) \ | |
981 | (ELF32_R_INFO (s, t)) | |
982 | #endif | |
983 | \f | |
984 | /* The mips16 compiler uses a couple of special sections to handle | |
985 | floating point arguments. | |
986 | ||
987 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
988 | copy floating point arguments from the fp regs to the gp regs and | |
989 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
990 | call should be redirected to the stub instead. If no 32 bit | |
991 | function calls FNNAME, the stub should be discarded. We need to | |
992 | consider any reference to the function, not just a call, because | |
993 | if the address of the function is taken we will need the stub, | |
994 | since the address might be passed to a 32 bit function. | |
995 | ||
996 | Section names that look like .mips16.call.FNNAME contain stubs | |
997 | that copy floating point arguments from the gp regs to the fp | |
998 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
999 | then any 16 bit function that calls FNNAME should be redirected | |
1000 | to the stub instead. If FNNAME is not a 32 bit function, the | |
1001 | stub should be discarded. | |
1002 | ||
1003 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
1004 | which call FNNAME and then copy the return value from the fp regs | |
1005 | to the gp regs. These stubs store the return value in $18 while | |
1006 | calling FNNAME; any function which might call one of these stubs | |
1007 | must arrange to save $18 around the call. (This case is not | |
1008 | needed for 32 bit functions that call 16 bit functions, because | |
1009 | 16 bit functions always return floating point values in both | |
1010 | $f0/$f1 and $2/$3.) | |
1011 | ||
1012 | Note that in all cases FNNAME might be defined statically. | |
1013 | Therefore, FNNAME is not used literally. Instead, the relocation | |
1014 | information will indicate which symbol the section is for. | |
1015 | ||
1016 | We record any stubs that we find in the symbol table. */ | |
1017 | ||
1018 | #define FN_STUB ".mips16.fn." | |
1019 | #define CALL_STUB ".mips16.call." | |
1020 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
1021 | |
1022 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
1023 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
1024 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 1025 | \f |
861fb55a | 1026 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
1027 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
1028 | { | |
861fb55a DJ |
1029 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
1030 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1031 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1032 | 0x031cc023, /* subu $24, $24, $28 */ | |
40fc1451 | 1033 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1034 | 0x0018c082, /* srl $24, $24, 2 */ |
1035 | 0x0320f809, /* jalr $25 */ | |
1036 | 0x2718fffe /* subu $24, $24, 2 */ | |
1037 | }; | |
1038 | ||
1039 | /* The format of the first PLT entry in an N32 executable. Different | |
1040 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
1041 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
1042 | { | |
861fb55a DJ |
1043 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1044 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
1045 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1046 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1047 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1048 | 0x0018c082, /* srl $24, $24, 2 */ |
1049 | 0x0320f809, /* jalr $25 */ | |
1050 | 0x2718fffe /* subu $24, $24, 2 */ | |
1051 | }; | |
1052 | ||
1053 | /* The format of the first PLT entry in an N64 executable. Different | |
1054 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
1055 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
1056 | { | |
861fb55a DJ |
1057 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1058 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
1059 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1060 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1061 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1062 | 0x0018c0c2, /* srl $24, $24, 3 */ |
1063 | 0x0320f809, /* jalr $25 */ | |
1064 | 0x2718fffe /* subu $24, $24, 2 */ | |
1065 | }; | |
1066 | ||
1bbce132 MR |
1067 | /* The format of the microMIPS first PLT entry in an O32 executable. |
1068 | We rely on v0 ($2) rather than t8 ($24) to contain the address | |
1069 | of the GOTPLT entry handled, so this stub may only be used when | |
1070 | all the subsequent PLT entries are microMIPS code too. | |
1071 | ||
1072 | The trailing NOP is for alignment and correct disassembly only. */ | |
1073 | static const bfd_vma micromips_o32_exec_plt0_entry[] = | |
1074 | { | |
1075 | 0x7980, 0x0000, /* addiupc $3, (&GOTPLT[0]) - . */ | |
1076 | 0xff23, 0x0000, /* lw $25, 0($3) */ | |
1077 | 0x0535, /* subu $2, $2, $3 */ | |
1078 | 0x2525, /* srl $2, $2, 2 */ | |
1079 | 0x3302, 0xfffe, /* subu $24, $2, 2 */ | |
1080 | 0x0dff, /* move $15, $31 */ | |
1081 | 0x45f9, /* jalrs $25 */ | |
1082 | 0x0f83, /* move $28, $3 */ | |
1083 | 0x0c00 /* nop */ | |
1084 | }; | |
1085 | ||
833794fc MR |
1086 | /* The format of the microMIPS first PLT entry in an O32 executable |
1087 | in the insn32 mode. */ | |
1088 | static const bfd_vma micromips_insn32_o32_exec_plt0_entry[] = | |
1089 | { | |
1090 | 0x41bc, 0x0000, /* lui $28, %hi(&GOTPLT[0]) */ | |
1091 | 0xff3c, 0x0000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1092 | 0x339c, 0x0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1093 | 0x0398, 0xc1d0, /* subu $24, $24, $28 */ | |
40fc1451 | 1094 | 0x001f, 0x7a90, /* or $15, $31, zero */ |
833794fc MR |
1095 | 0x0318, 0x1040, /* srl $24, $24, 2 */ |
1096 | 0x03f9, 0x0f3c, /* jalr $25 */ | |
1097 | 0x3318, 0xfffe /* subu $24, $24, 2 */ | |
1098 | }; | |
1099 | ||
1bbce132 | 1100 | /* The format of subsequent standard PLT entries. */ |
6d30f5b2 NC |
1101 | static const bfd_vma mips_exec_plt_entry[] = |
1102 | { | |
861fb55a DJ |
1103 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
1104 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1105 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1106 | 0x03200008 /* jr $25 */ | |
1107 | }; | |
1108 | ||
7361da2c AB |
1109 | /* In the following PLT entry the JR and ADDIU instructions will |
1110 | be swapped in _bfd_mips_elf_finish_dynamic_symbol because | |
1111 | LOAD_INTERLOCKS_P will be true for MIPS R6. */ | |
1112 | static const bfd_vma mipsr6_exec_plt_entry[] = | |
1113 | { | |
1114 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ | |
1115 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1116 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1117 | 0x03200009 /* jr $25 */ | |
1118 | }; | |
1119 | ||
1bbce132 MR |
1120 | /* The format of subsequent MIPS16 o32 PLT entries. We use v0 ($2) |
1121 | and v1 ($3) as temporaries because t8 ($24) and t9 ($25) are not | |
1122 | directly addressable. */ | |
1123 | static const bfd_vma mips16_o32_exec_plt_entry[] = | |
1124 | { | |
1125 | 0xb203, /* lw $2, 12($pc) */ | |
1126 | 0x9a60, /* lw $3, 0($2) */ | |
1127 | 0x651a, /* move $24, $2 */ | |
1128 | 0xeb00, /* jr $3 */ | |
1129 | 0x653b, /* move $25, $3 */ | |
1130 | 0x6500, /* nop */ | |
1131 | 0x0000, 0x0000 /* .word (.got.plt entry) */ | |
1132 | }; | |
1133 | ||
1134 | /* The format of subsequent microMIPS o32 PLT entries. We use v0 ($2) | |
1135 | as a temporary because t8 ($24) is not addressable with ADDIUPC. */ | |
1136 | static const bfd_vma micromips_o32_exec_plt_entry[] = | |
1137 | { | |
1138 | 0x7900, 0x0000, /* addiupc $2, (.got.plt entry) - . */ | |
1139 | 0xff22, 0x0000, /* lw $25, 0($2) */ | |
1140 | 0x4599, /* jr $25 */ | |
1141 | 0x0f02 /* move $24, $2 */ | |
1142 | }; | |
1143 | ||
833794fc MR |
1144 | /* The format of subsequent microMIPS o32 PLT entries in the insn32 mode. */ |
1145 | static const bfd_vma micromips_insn32_o32_exec_plt_entry[] = | |
1146 | { | |
1147 | 0x41af, 0x0000, /* lui $15, %hi(.got.plt entry) */ | |
1148 | 0xff2f, 0x0000, /* lw $25, %lo(.got.plt entry)($15) */ | |
1149 | 0x0019, 0x0f3c, /* jr $25 */ | |
1150 | 0x330f, 0x0000 /* addiu $24, $15, %lo(.got.plt entry) */ | |
1151 | }; | |
1152 | ||
0a44bf69 | 1153 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
1154 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
1155 | { | |
0a44bf69 RS |
1156 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
1157 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
1158 | 0x8f390008, /* lw t9, 8(t9) */ | |
1159 | 0x00000000, /* nop */ | |
1160 | 0x03200008, /* jr t9 */ | |
1161 | 0x00000000 /* nop */ | |
1162 | }; | |
1163 | ||
1164 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1165 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
1166 | { | |
0a44bf69 RS |
1167 | 0x10000000, /* b .PLT_resolver */ |
1168 | 0x24180000, /* li t8, <pltindex> */ | |
1169 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
1170 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
1171 | 0x8f390000, /* lw t9, 0(t9) */ | |
1172 | 0x00000000, /* nop */ | |
1173 | 0x03200008, /* jr t9 */ | |
1174 | 0x00000000 /* nop */ | |
1175 | }; | |
1176 | ||
1177 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1178 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1179 | { | |
0a44bf69 RS |
1180 | 0x8f990008, /* lw t9, 8(gp) */ |
1181 | 0x00000000, /* nop */ | |
1182 | 0x03200008, /* jr t9 */ | |
1183 | 0x00000000, /* nop */ | |
1184 | 0x00000000, /* nop */ | |
1185 | 0x00000000 /* nop */ | |
1186 | }; | |
1187 | ||
1188 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1189 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1190 | { | |
0a44bf69 RS |
1191 | 0x10000000, /* b .PLT_resolver */ |
1192 | 0x24180000 /* li t8, <pltindex> */ | |
1193 | }; | |
1194 | \f | |
d21911ea MR |
1195 | /* microMIPS 32-bit opcode helper installer. */ |
1196 | ||
1197 | static void | |
1198 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1199 | { | |
1200 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
07d6d2b8 | 1201 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); |
d21911ea MR |
1202 | } |
1203 | ||
1204 | /* microMIPS 32-bit opcode helper retriever. */ | |
1205 | ||
1206 | static bfd_vma | |
1207 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1208 | { | |
1209 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1210 | } | |
1211 | \f | |
b49e97c9 TS |
1212 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1213 | ||
1214 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1215 | ((struct mips_elf_link_hash_entry *) \ | |
1216 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1217 | (copy), (follow))) | |
1218 | ||
1219 | /* Traverse a MIPS ELF linker hash table. */ | |
1220 | ||
1221 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1222 | (elf_link_hash_traverse \ | |
1223 | (&(table)->root, \ | |
9719ad41 | 1224 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1225 | (info))) |
1226 | ||
0f20cc35 DJ |
1227 | /* Find the base offsets for thread-local storage in this object, |
1228 | for GD/LD and IE/LE respectively. */ | |
1229 | ||
1230 | #define TP_OFFSET 0x7000 | |
1231 | #define DTP_OFFSET 0x8000 | |
1232 | ||
1233 | static bfd_vma | |
1234 | dtprel_base (struct bfd_link_info *info) | |
1235 | { | |
1236 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1237 | if (elf_hash_table (info)->tls_sec == NULL) | |
1238 | return 0; | |
1239 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1240 | } | |
1241 | ||
1242 | static bfd_vma | |
1243 | tprel_base (struct bfd_link_info *info) | |
1244 | { | |
1245 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1246 | if (elf_hash_table (info)->tls_sec == NULL) | |
1247 | return 0; | |
1248 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1249 | } | |
1250 | ||
b49e97c9 TS |
1251 | /* Create an entry in a MIPS ELF linker hash table. */ |
1252 | ||
1253 | static struct bfd_hash_entry * | |
9719ad41 RS |
1254 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1255 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1256 | { |
1257 | struct mips_elf_link_hash_entry *ret = | |
1258 | (struct mips_elf_link_hash_entry *) entry; | |
1259 | ||
1260 | /* Allocate the structure if it has not already been allocated by a | |
1261 | subclass. */ | |
9719ad41 RS |
1262 | if (ret == NULL) |
1263 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1264 | if (ret == NULL) | |
b49e97c9 TS |
1265 | return (struct bfd_hash_entry *) ret; |
1266 | ||
1267 | /* Call the allocation method of the superclass. */ | |
1268 | ret = ((struct mips_elf_link_hash_entry *) | |
1269 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1270 | table, string)); | |
9719ad41 | 1271 | if (ret != NULL) |
b49e97c9 TS |
1272 | { |
1273 | /* Set local fields. */ | |
1274 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1275 | /* We use -2 as a marker to indicate that the information has | |
1276 | not been set. -1 means there is no associated ifd. */ | |
1277 | ret->esym.ifd = -2; | |
861fb55a | 1278 | ret->la25_stub = 0; |
b49e97c9 | 1279 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1280 | ret->fn_stub = NULL; |
b49e97c9 TS |
1281 | ret->call_stub = NULL; |
1282 | ret->call_fp_stub = NULL; | |
634835ae | 1283 | ret->global_got_area = GGA_NONE; |
6ccf4795 | 1284 | ret->got_only_for_calls = TRUE; |
71782a75 | 1285 | ret->readonly_reloc = FALSE; |
861fb55a | 1286 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1287 | ret->no_fn_stub = FALSE; |
1288 | ret->need_fn_stub = FALSE; | |
861fb55a | 1289 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1290 | ret->needs_lazy_stub = FALSE; |
1bbce132 | 1291 | ret->use_plt_entry = FALSE; |
b49e97c9 TS |
1292 | } |
1293 | ||
1294 | return (struct bfd_hash_entry *) ret; | |
1295 | } | |
f0abc2a1 | 1296 | |
6ae68ba3 MR |
1297 | /* Allocate MIPS ELF private object data. */ |
1298 | ||
1299 | bfd_boolean | |
1300 | _bfd_mips_elf_mkobject (bfd *abfd) | |
1301 | { | |
1302 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1303 | MIPS_ELF_DATA); | |
1304 | } | |
1305 | ||
f0abc2a1 | 1306 | bfd_boolean |
9719ad41 | 1307 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1308 | { |
f592407e AM |
1309 | if (!sec->used_by_bfd) |
1310 | { | |
1311 | struct _mips_elf_section_data *sdata; | |
1312 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1313 | |
f592407e AM |
1314 | sdata = bfd_zalloc (abfd, amt); |
1315 | if (sdata == NULL) | |
1316 | return FALSE; | |
1317 | sec->used_by_bfd = sdata; | |
1318 | } | |
f0abc2a1 AM |
1319 | |
1320 | return _bfd_elf_new_section_hook (abfd, sec); | |
1321 | } | |
b49e97c9 TS |
1322 | \f |
1323 | /* Read ECOFF debugging information from a .mdebug section into a | |
1324 | ecoff_debug_info structure. */ | |
1325 | ||
b34976b6 | 1326 | bfd_boolean |
9719ad41 RS |
1327 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1328 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1329 | { |
1330 | HDRR *symhdr; | |
1331 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1332 | char *ext_hdr; |
b49e97c9 TS |
1333 | |
1334 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1335 | memset (debug, 0, sizeof (*debug)); | |
1336 | ||
9719ad41 | 1337 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1338 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1339 | goto error_return; | |
1340 | ||
9719ad41 | 1341 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1342 | swap->external_hdr_size)) |
b49e97c9 TS |
1343 | goto error_return; |
1344 | ||
1345 | symhdr = &debug->symbolic_header; | |
1346 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1347 | ||
1348 | /* The symbolic header contains absolute file offsets and sizes to | |
1349 | read. */ | |
1350 | #define READ(ptr, offset, count, size, type) \ | |
1351 | if (symhdr->count == 0) \ | |
1352 | debug->ptr = NULL; \ | |
1353 | else \ | |
1354 | { \ | |
1355 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1356 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1357 | if (debug->ptr == NULL) \ |
1358 | goto error_return; \ | |
9719ad41 | 1359 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1360 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1361 | goto error_return; \ | |
1362 | } | |
1363 | ||
1364 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1365 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1366 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1367 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1368 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1369 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1370 | union aux_ext *); | |
1371 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1372 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1373 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1374 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1375 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1376 | #undef READ |
1377 | ||
1378 | debug->fdr = NULL; | |
b49e97c9 | 1379 | |
b34976b6 | 1380 | return TRUE; |
b49e97c9 TS |
1381 | |
1382 | error_return: | |
1383 | if (ext_hdr != NULL) | |
1384 | free (ext_hdr); | |
1385 | if (debug->line != NULL) | |
1386 | free (debug->line); | |
1387 | if (debug->external_dnr != NULL) | |
1388 | free (debug->external_dnr); | |
1389 | if (debug->external_pdr != NULL) | |
1390 | free (debug->external_pdr); | |
1391 | if (debug->external_sym != NULL) | |
1392 | free (debug->external_sym); | |
1393 | if (debug->external_opt != NULL) | |
1394 | free (debug->external_opt); | |
1395 | if (debug->external_aux != NULL) | |
1396 | free (debug->external_aux); | |
1397 | if (debug->ss != NULL) | |
1398 | free (debug->ss); | |
1399 | if (debug->ssext != NULL) | |
1400 | free (debug->ssext); | |
1401 | if (debug->external_fdr != NULL) | |
1402 | free (debug->external_fdr); | |
1403 | if (debug->external_rfd != NULL) | |
1404 | free (debug->external_rfd); | |
1405 | if (debug->external_ext != NULL) | |
1406 | free (debug->external_ext); | |
b34976b6 | 1407 | return FALSE; |
b49e97c9 TS |
1408 | } |
1409 | \f | |
1410 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1411 | ||
1412 | static void | |
9719ad41 | 1413 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1414 | { |
1415 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1416 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1417 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1418 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1419 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1420 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1421 | ||
1422 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1423 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1424 | ||
1425 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1426 | } |
1427 | ||
1428 | /* Create a runtime procedure table from the .mdebug section. */ | |
1429 | ||
b34976b6 | 1430 | static bfd_boolean |
9719ad41 RS |
1431 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1432 | struct bfd_link_info *info, asection *s, | |
1433 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1434 | { |
1435 | const struct ecoff_debug_swap *swap; | |
1436 | HDRR *hdr = &debug->symbolic_header; | |
1437 | RPDR *rpdr, *rp; | |
1438 | struct rpdr_ext *erp; | |
9719ad41 | 1439 | void *rtproc; |
b49e97c9 TS |
1440 | struct pdr_ext *epdr; |
1441 | struct sym_ext *esym; | |
1442 | char *ss, **sv; | |
1443 | char *str; | |
1444 | bfd_size_type size; | |
1445 | bfd_size_type count; | |
1446 | unsigned long sindex; | |
1447 | unsigned long i; | |
1448 | PDR pdr; | |
1449 | SYMR sym; | |
1450 | const char *no_name_func = _("static procedure (no name)"); | |
1451 | ||
1452 | epdr = NULL; | |
1453 | rpdr = NULL; | |
1454 | esym = NULL; | |
1455 | ss = NULL; | |
1456 | sv = NULL; | |
1457 | ||
1458 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1459 | ||
1460 | sindex = strlen (no_name_func) + 1; | |
1461 | count = hdr->ipdMax; | |
1462 | if (count > 0) | |
1463 | { | |
1464 | size = swap->external_pdr_size; | |
1465 | ||
9719ad41 | 1466 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1467 | if (epdr == NULL) |
1468 | goto error_return; | |
1469 | ||
9719ad41 | 1470 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1471 | goto error_return; |
1472 | ||
1473 | size = sizeof (RPDR); | |
9719ad41 | 1474 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1475 | if (rpdr == NULL) |
1476 | goto error_return; | |
1477 | ||
1478 | size = sizeof (char *); | |
9719ad41 | 1479 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1480 | if (sv == NULL) |
1481 | goto error_return; | |
1482 | ||
1483 | count = hdr->isymMax; | |
1484 | size = swap->external_sym_size; | |
9719ad41 | 1485 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1486 | if (esym == NULL) |
1487 | goto error_return; | |
1488 | ||
9719ad41 | 1489 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1490 | goto error_return; |
1491 | ||
1492 | count = hdr->issMax; | |
9719ad41 | 1493 | ss = bfd_malloc (count); |
b49e97c9 TS |
1494 | if (ss == NULL) |
1495 | goto error_return; | |
f075ee0c | 1496 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1497 | goto error_return; |
1498 | ||
1499 | count = hdr->ipdMax; | |
1500 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1501 | { | |
9719ad41 RS |
1502 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1503 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1504 | rp->adr = sym.value; |
1505 | rp->regmask = pdr.regmask; | |
1506 | rp->regoffset = pdr.regoffset; | |
1507 | rp->fregmask = pdr.fregmask; | |
1508 | rp->fregoffset = pdr.fregoffset; | |
1509 | rp->frameoffset = pdr.frameoffset; | |
1510 | rp->framereg = pdr.framereg; | |
1511 | rp->pcreg = pdr.pcreg; | |
1512 | rp->irpss = sindex; | |
1513 | sv[i] = ss + sym.iss; | |
1514 | sindex += strlen (sv[i]) + 1; | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1519 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1520 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1521 | if (rtproc == NULL) |
1522 | { | |
1523 | mips_elf_hash_table (info)->procedure_count = 0; | |
1524 | goto error_return; | |
1525 | } | |
1526 | ||
1527 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1528 | ||
9719ad41 | 1529 | erp = rtproc; |
b49e97c9 TS |
1530 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1531 | erp++; | |
1532 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1533 | strcpy (str, no_name_func); | |
1534 | str += strlen (no_name_func) + 1; | |
1535 | for (i = 0; i < count; i++) | |
1536 | { | |
1537 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1538 | strcpy (str, sv[i]); | |
1539 | str += strlen (sv[i]) + 1; | |
1540 | } | |
1541 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1542 | ||
1543 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1544 | s->size = size; |
9719ad41 | 1545 | s->contents = rtproc; |
b49e97c9 TS |
1546 | |
1547 | /* Skip this section later on (I don't think this currently | |
1548 | matters, but someday it might). */ | |
8423293d | 1549 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1550 | |
1551 | if (epdr != NULL) | |
1552 | free (epdr); | |
1553 | if (rpdr != NULL) | |
1554 | free (rpdr); | |
1555 | if (esym != NULL) | |
1556 | free (esym); | |
1557 | if (ss != NULL) | |
1558 | free (ss); | |
1559 | if (sv != NULL) | |
1560 | free (sv); | |
1561 | ||
b34976b6 | 1562 | return TRUE; |
b49e97c9 TS |
1563 | |
1564 | error_return: | |
1565 | if (epdr != NULL) | |
1566 | free (epdr); | |
1567 | if (rpdr != NULL) | |
1568 | free (rpdr); | |
1569 | if (esym != NULL) | |
1570 | free (esym); | |
1571 | if (ss != NULL) | |
1572 | free (ss); | |
1573 | if (sv != NULL) | |
1574 | free (sv); | |
b34976b6 | 1575 | return FALSE; |
b49e97c9 | 1576 | } |
738e5348 | 1577 | \f |
861fb55a DJ |
1578 | /* We're going to create a stub for H. Create a symbol for the stub's |
1579 | value and size, to help make the disassembly easier to read. */ | |
1580 | ||
1581 | static bfd_boolean | |
1582 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1583 | struct mips_elf_link_hash_entry *h, | |
1584 | const char *prefix, asection *s, bfd_vma value, | |
1585 | bfd_vma size) | |
1586 | { | |
a848a227 | 1587 | bfd_boolean micromips_p = ELF_ST_IS_MICROMIPS (h->root.other); |
861fb55a DJ |
1588 | struct bfd_link_hash_entry *bh; |
1589 | struct elf_link_hash_entry *elfh; | |
e1fa0163 NC |
1590 | char *name; |
1591 | bfd_boolean res; | |
861fb55a | 1592 | |
a848a227 | 1593 | if (micromips_p) |
df58fc94 RS |
1594 | value |= 1; |
1595 | ||
861fb55a | 1596 | /* Create a new symbol. */ |
e1fa0163 | 1597 | name = concat (prefix, h->root.root.root.string, NULL); |
861fb55a | 1598 | bh = NULL; |
e1fa0163 NC |
1599 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1600 | BSF_LOCAL, s, value, NULL, | |
1601 | TRUE, FALSE, &bh); | |
1602 | free (name); | |
1603 | if (! res) | |
861fb55a DJ |
1604 | return FALSE; |
1605 | ||
1606 | /* Make it a local function. */ | |
1607 | elfh = (struct elf_link_hash_entry *) bh; | |
1608 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1609 | elfh->size = size; | |
1610 | elfh->forced_local = 1; | |
a848a227 MR |
1611 | if (micromips_p) |
1612 | elfh->other = ELF_ST_SET_MICROMIPS (elfh->other); | |
861fb55a DJ |
1613 | return TRUE; |
1614 | } | |
1615 | ||
738e5348 RS |
1616 | /* We're about to redefine H. Create a symbol to represent H's |
1617 | current value and size, to help make the disassembly easier | |
1618 | to read. */ | |
1619 | ||
1620 | static bfd_boolean | |
1621 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1622 | struct mips_elf_link_hash_entry *h, | |
1623 | const char *prefix) | |
1624 | { | |
1625 | struct bfd_link_hash_entry *bh; | |
1626 | struct elf_link_hash_entry *elfh; | |
e1fa0163 | 1627 | char *name; |
738e5348 RS |
1628 | asection *s; |
1629 | bfd_vma value; | |
e1fa0163 | 1630 | bfd_boolean res; |
738e5348 RS |
1631 | |
1632 | /* Read the symbol's value. */ | |
1633 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1634 | || h->root.root.type == bfd_link_hash_defweak); | |
1635 | s = h->root.root.u.def.section; | |
1636 | value = h->root.root.u.def.value; | |
1637 | ||
1638 | /* Create a new symbol. */ | |
e1fa0163 | 1639 | name = concat (prefix, h->root.root.root.string, NULL); |
738e5348 | 1640 | bh = NULL; |
e1fa0163 NC |
1641 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1642 | BSF_LOCAL, s, value, NULL, | |
1643 | TRUE, FALSE, &bh); | |
1644 | free (name); | |
1645 | if (! res) | |
738e5348 RS |
1646 | return FALSE; |
1647 | ||
1648 | /* Make it local and copy the other attributes from H. */ | |
1649 | elfh = (struct elf_link_hash_entry *) bh; | |
1650 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1651 | elfh->other = h->root.other; | |
1652 | elfh->size = h->root.size; | |
1653 | elfh->forced_local = 1; | |
1654 | return TRUE; | |
1655 | } | |
1656 | ||
1657 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1658 | function rather than to a hard-float stub. */ | |
1659 | ||
1660 | static bfd_boolean | |
1661 | section_allows_mips16_refs_p (asection *section) | |
1662 | { | |
1663 | const char *name; | |
1664 | ||
1665 | name = bfd_get_section_name (section->owner, section); | |
1666 | return (FN_STUB_P (name) | |
1667 | || CALL_STUB_P (name) | |
1668 | || CALL_FP_STUB_P (name) | |
1669 | || strcmp (name, ".pdr") == 0); | |
1670 | } | |
1671 | ||
1672 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1673 | stub section of some kind. Return the R_SYMNDX of the target | |
1674 | function, or 0 if we can't decide which function that is. */ | |
1675 | ||
1676 | static unsigned long | |
cb4437b8 MR |
1677 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1678 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1679 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1680 | const Elf_Internal_Rela *relend) |
1681 | { | |
cb4437b8 | 1682 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1683 | const Elf_Internal_Rela *rel; |
1684 | ||
cb4437b8 MR |
1685 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1686 | one in a compound relocation. */ | |
1687 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1688 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1689 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1690 | ||
1691 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1692 | the traditional behavior. */ | |
1693 | if (relocs < relend) | |
1694 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1695 | ||
1696 | return 0; | |
1697 | } | |
b49e97c9 TS |
1698 | |
1699 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1700 | discard them. */ | |
1701 | ||
861fb55a DJ |
1702 | static void |
1703 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1704 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1705 | { |
738e5348 RS |
1706 | /* Dynamic symbols must use the standard call interface, in case other |
1707 | objects try to call them. */ | |
1708 | if (h->fn_stub != NULL | |
1709 | && h->root.dynindx != -1) | |
1710 | { | |
1711 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1712 | h->need_fn_stub = TRUE; | |
1713 | } | |
1714 | ||
b49e97c9 TS |
1715 | if (h->fn_stub != NULL |
1716 | && ! h->need_fn_stub) | |
1717 | { | |
1718 | /* We don't need the fn_stub; the only references to this symbol | |
07d6d2b8 AM |
1719 | are 16 bit calls. Clobber the size to 0 to prevent it from |
1720 | being included in the link. */ | |
eea6121a | 1721 | h->fn_stub->size = 0; |
b49e97c9 TS |
1722 | h->fn_stub->flags &= ~SEC_RELOC; |
1723 | h->fn_stub->reloc_count = 0; | |
1724 | h->fn_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1725 | h->fn_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1726 | } |
1727 | ||
1728 | if (h->call_stub != NULL | |
30c09090 | 1729 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1730 | { |
1731 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1732 | calls from other 16 bit functions are OK. Clobber the size |
1733 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1734 | h->call_stub->size = 0; |
b49e97c9 TS |
1735 | h->call_stub->flags &= ~SEC_RELOC; |
1736 | h->call_stub->reloc_count = 0; | |
1737 | h->call_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1738 | h->call_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1739 | } |
1740 | ||
1741 | if (h->call_fp_stub != NULL | |
30c09090 | 1742 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1743 | { |
1744 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1745 | calls from other 16 bit functions are OK. Clobber the size |
1746 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1747 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1748 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1749 | h->call_fp_stub->reloc_count = 0; | |
1750 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1751 | h->call_fp_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 | 1752 | } |
861fb55a DJ |
1753 | } |
1754 | ||
1755 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1756 | ||
1757 | static hashval_t | |
1758 | mips_elf_la25_stub_hash (const void *entry_) | |
1759 | { | |
1760 | const struct mips_elf_la25_stub *entry; | |
1761 | ||
1762 | entry = (struct mips_elf_la25_stub *) entry_; | |
1763 | return entry->h->root.root.u.def.section->id | |
1764 | + entry->h->root.root.u.def.value; | |
1765 | } | |
1766 | ||
1767 | static int | |
1768 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1769 | { | |
1770 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1771 | ||
1772 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1773 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1774 | return ((entry1->h->root.root.u.def.section | |
1775 | == entry2->h->root.root.u.def.section) | |
1776 | && (entry1->h->root.root.u.def.value | |
1777 | == entry2->h->root.root.u.def.value)); | |
1778 | } | |
1779 | ||
1780 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1781 | the linker's implementation of add_stub_function. Return true on | |
1782 | success. */ | |
1783 | ||
1784 | bfd_boolean | |
1785 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1786 | asection *(*fn) (const char *, asection *, | |
1787 | asection *)) | |
1788 | { | |
1789 | struct mips_elf_link_hash_table *htab; | |
1790 | ||
1791 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1792 | if (htab == NULL) |
1793 | return FALSE; | |
1794 | ||
861fb55a DJ |
1795 | htab->add_stub_section = fn; |
1796 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1797 | mips_elf_la25_stub_eq, NULL); | |
1798 | if (htab->la25_stubs == NULL) | |
1799 | return FALSE; | |
1800 | ||
1801 | return TRUE; | |
1802 | } | |
1803 | ||
1804 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1805 | that it or its fn_stub might need $25 to be valid on entry. |
1806 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1807 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1808 | entry points are of interest here. */ | |
861fb55a DJ |
1809 | |
1810 | static bfd_boolean | |
1811 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1812 | { | |
1813 | return ((h->root.root.type == bfd_link_hash_defined | |
1814 | || h->root.root.type == bfd_link_hash_defweak) | |
1815 | && h->root.def_regular | |
1816 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
f02cb058 | 1817 | && !bfd_is_und_section (h->root.root.u.def.section) |
8f0c309a CLT |
1818 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1819 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1820 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1821 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1822 | } | |
1823 | ||
8f0c309a CLT |
1824 | /* Set *SEC to the input section that contains the target of STUB. |
1825 | Return the offset of the target from the start of that section. */ | |
1826 | ||
1827 | static bfd_vma | |
1828 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1829 | asection **sec) | |
1830 | { | |
1831 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1832 | { | |
1833 | BFD_ASSERT (stub->h->need_fn_stub); | |
1834 | *sec = stub->h->fn_stub; | |
1835 | return 0; | |
1836 | } | |
1837 | else | |
1838 | { | |
1839 | *sec = stub->h->root.root.u.def.section; | |
1840 | return stub->h->root.root.u.def.value; | |
1841 | } | |
1842 | } | |
1843 | ||
861fb55a DJ |
1844 | /* STUB describes an la25 stub that we have decided to implement |
1845 | by inserting an LUI/ADDIU pair before the target function. | |
1846 | Create the section and redirect the function symbol to it. */ | |
1847 | ||
1848 | static bfd_boolean | |
1849 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1850 | struct bfd_link_info *info) | |
1851 | { | |
1852 | struct mips_elf_link_hash_table *htab; | |
1853 | char *name; | |
1854 | asection *s, *input_section; | |
1855 | unsigned int align; | |
1856 | ||
1857 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1858 | if (htab == NULL) |
1859 | return FALSE; | |
861fb55a DJ |
1860 | |
1861 | /* Create a unique name for the new section. */ | |
1862 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1863 | if (name == NULL) | |
1864 | return FALSE; | |
1865 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1866 | ||
1867 | /* Create the section. */ | |
8f0c309a | 1868 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1869 | s = htab->add_stub_section (name, input_section, |
1870 | input_section->output_section); | |
1871 | if (s == NULL) | |
1872 | return FALSE; | |
1873 | ||
1874 | /* Make sure that any padding goes before the stub. */ | |
1875 | align = input_section->alignment_power; | |
1876 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1877 | return FALSE; | |
1878 | if (align > 3) | |
1879 | s->size = (1 << align) - 8; | |
1880 | ||
1881 | /* Create a symbol for the stub. */ | |
1882 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1883 | stub->stub_section = s; | |
1884 | stub->offset = s->size; | |
1885 | ||
1886 | /* Allocate room for it. */ | |
1887 | s->size += 8; | |
1888 | return TRUE; | |
1889 | } | |
1890 | ||
1891 | /* STUB describes an la25 stub that we have decided to implement | |
1892 | with a separate trampoline. Allocate room for it and redirect | |
1893 | the function symbol to it. */ | |
1894 | ||
1895 | static bfd_boolean | |
1896 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1897 | struct bfd_link_info *info) | |
1898 | { | |
1899 | struct mips_elf_link_hash_table *htab; | |
1900 | asection *s; | |
1901 | ||
1902 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1903 | if (htab == NULL) |
1904 | return FALSE; | |
861fb55a DJ |
1905 | |
1906 | /* Create a trampoline section, if we haven't already. */ | |
1907 | s = htab->strampoline; | |
1908 | if (s == NULL) | |
1909 | { | |
1910 | asection *input_section = stub->h->root.root.u.def.section; | |
1911 | s = htab->add_stub_section (".text", NULL, | |
1912 | input_section->output_section); | |
1913 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1914 | return FALSE; | |
1915 | htab->strampoline = s; | |
1916 | } | |
1917 | ||
1918 | /* Create a symbol for the stub. */ | |
1919 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1920 | stub->stub_section = s; | |
1921 | stub->offset = s->size; | |
1922 | ||
1923 | /* Allocate room for it. */ | |
1924 | s->size += 16; | |
1925 | return TRUE; | |
1926 | } | |
1927 | ||
1928 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1929 | appropriate stub exists and point H at it. */ | |
1930 | ||
1931 | static bfd_boolean | |
1932 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1933 | struct mips_elf_link_hash_entry *h) | |
1934 | { | |
1935 | struct mips_elf_link_hash_table *htab; | |
1936 | struct mips_elf_la25_stub search, *stub; | |
1937 | bfd_boolean use_trampoline_p; | |
1938 | asection *s; | |
1939 | bfd_vma value; | |
1940 | void **slot; | |
1941 | ||
861fb55a DJ |
1942 | /* Describe the stub we want. */ |
1943 | search.stub_section = NULL; | |
1944 | search.offset = 0; | |
1945 | search.h = h; | |
1946 | ||
1947 | /* See if we've already created an equivalent stub. */ | |
1948 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1949 | if (htab == NULL) |
1950 | return FALSE; | |
1951 | ||
861fb55a DJ |
1952 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1953 | if (slot == NULL) | |
1954 | return FALSE; | |
1955 | ||
1956 | stub = (struct mips_elf_la25_stub *) *slot; | |
1957 | if (stub != NULL) | |
1958 | { | |
1959 | /* We can reuse the existing stub. */ | |
1960 | h->la25_stub = stub; | |
1961 | return TRUE; | |
1962 | } | |
1963 | ||
1964 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1965 | stub = bfd_malloc (sizeof (search)); | |
1966 | if (stub == NULL) | |
1967 | return FALSE; | |
1968 | *stub = search; | |
1969 | *slot = stub; | |
1970 | ||
8f0c309a CLT |
1971 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
1972 | of the section and if we would need no more than 2 nops. */ | |
1973 | value = mips_elf_get_la25_target (stub, &s); | |
fe152e64 MR |
1974 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
1975 | value &= ~1; | |
8f0c309a CLT |
1976 | use_trampoline_p = (value != 0 || s->alignment_power > 4); |
1977 | ||
861fb55a DJ |
1978 | h->la25_stub = stub; |
1979 | return (use_trampoline_p | |
1980 | ? mips_elf_add_la25_trampoline (stub, info) | |
1981 | : mips_elf_add_la25_intro (stub, info)); | |
1982 | } | |
1983 | ||
1984 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1985 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1986 | ||
1987 | static bfd_boolean | |
1988 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1989 | { | |
1990 | struct mips_htab_traverse_info *hti; | |
1991 | ||
1992 | hti = (struct mips_htab_traverse_info *) data; | |
0e1862bb | 1993 | if (!bfd_link_relocatable (hti->info)) |
861fb55a | 1994 | mips_elf_check_mips16_stubs (hti->info, h); |
b49e97c9 | 1995 | |
861fb55a DJ |
1996 | if (mips_elf_local_pic_function_p (h)) |
1997 | { | |
ba85c43e NC |
1998 | /* PR 12845: If H is in a section that has been garbage |
1999 | collected it will have its output section set to *ABS*. */ | |
2000 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
2001 | return TRUE; | |
2002 | ||
861fb55a DJ |
2003 | /* H is a function that might need $25 to be valid on entry. |
2004 | If we're creating a non-PIC relocatable object, mark H as | |
2005 | being PIC. If we're creating a non-relocatable object with | |
2006 | non-PIC branches and jumps to H, make sure that H has an la25 | |
2007 | stub. */ | |
0e1862bb | 2008 | if (bfd_link_relocatable (hti->info)) |
861fb55a DJ |
2009 | { |
2010 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
2011 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
2012 | } | |
2013 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
2014 | { | |
2015 | hti->error = TRUE; | |
2016 | return FALSE; | |
2017 | } | |
2018 | } | |
b34976b6 | 2019 | return TRUE; |
b49e97c9 TS |
2020 | } |
2021 | \f | |
d6f16593 MR |
2022 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
2023 | Most mips16 instructions are 16 bits, but these instructions | |
2024 | are 32 bits. | |
2025 | ||
2026 | The format of these instructions is: | |
2027 | ||
2028 | +--------------+--------------------------------+ | |
2029 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
2030 | +--------------+--------------------------------+ | |
07d6d2b8 | 2031 | | Immediate 15:0 | |
d6f16593 MR |
2032 | +-----------------------------------------------+ |
2033 | ||
2034 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
2035 | Note that the immediate value in the first word is swapped. | |
2036 | ||
2037 | When producing a relocatable object file, R_MIPS16_26 is | |
2038 | handled mostly like R_MIPS_26. In particular, the addend is | |
2039 | stored as a straight 26-bit value in a 32-bit instruction. | |
2040 | (gas makes life simpler for itself by never adjusting a | |
2041 | R_MIPS16_26 reloc to be against a section, so the addend is | |
2042 | always zero). However, the 32 bit instruction is stored as 2 | |
2043 | 16-bit values, rather than a single 32-bit value. In a | |
2044 | big-endian file, the result is the same; in a little-endian | |
2045 | file, the two 16-bit halves of the 32 bit value are swapped. | |
2046 | This is so that a disassembler can recognize the jal | |
2047 | instruction. | |
2048 | ||
2049 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
2050 | instruction stored as two 16-bit values. The addend A is the | |
2051 | contents of the targ26 field. The calculation is the same as | |
2052 | R_MIPS_26. When storing the calculated value, reorder the | |
2053 | immediate value as shown above, and don't forget to store the | |
2054 | value as two 16-bit values. | |
2055 | ||
2056 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
2057 | defined as | |
2058 | ||
2059 | big-endian: | |
2060 | +--------+----------------------+ | |
07d6d2b8 AM |
2061 | | | | |
2062 | | | targ26-16 | | |
2063 | |31 26|25 0| | |
d6f16593 MR |
2064 | +--------+----------------------+ |
2065 | ||
2066 | little-endian: | |
2067 | +----------+------+-------------+ | |
07d6d2b8 AM |
2068 | | | | | |
2069 | | sub1 | | sub2 | | |
2070 | |0 9|10 15|16 31| | |
d6f16593 MR |
2071 | +----------+--------------------+ |
2072 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
2073 | ((sub1 << 16) | sub2)). | |
2074 | ||
2075 | When producing a relocatable object file, the calculation is | |
2076 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2077 | When producing a fully linked file, the calculation is | |
2078 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2079 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
2080 | ||
738e5348 RS |
2081 | The table below lists the other MIPS16 instruction relocations. |
2082 | Each one is calculated in the same way as the non-MIPS16 relocation | |
2083 | given on the right, but using the extended MIPS16 layout of 16-bit | |
2084 | immediate fields: | |
2085 | ||
2086 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
2087 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
2088 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
2089 | R_MIPS16_HI16 R_MIPS_HI16 | |
2090 | R_MIPS16_LO16 R_MIPS_LO16 | |
2091 | ||
2092 | A typical instruction will have a format like this: | |
d6f16593 MR |
2093 | |
2094 | +--------------+--------------------------------+ | |
2095 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
2096 | +--------------+--------------------------------+ | |
2097 | | Major | rx | ry | Imm 4:0 | | |
2098 | +--------------+--------------------------------+ | |
2099 | ||
2100 | EXTEND is the five bit value 11110. Major is the instruction | |
2101 | opcode. | |
2102 | ||
738e5348 RS |
2103 | All we need to do here is shuffle the bits appropriately. |
2104 | As above, the two 16-bit halves must be swapped on a | |
c9775dde MR |
2105 | little-endian system. |
2106 | ||
2107 | Finally R_MIPS16_PC16_S1 corresponds to R_MIPS_PC16, however the | |
2108 | relocatable field is shifted by 1 rather than 2 and the same bit | |
2109 | shuffling is done as with the relocations above. */ | |
738e5348 RS |
2110 | |
2111 | static inline bfd_boolean | |
2112 | mips16_reloc_p (int r_type) | |
2113 | { | |
2114 | switch (r_type) | |
2115 | { | |
2116 | case R_MIPS16_26: | |
2117 | case R_MIPS16_GPREL: | |
2118 | case R_MIPS16_GOT16: | |
2119 | case R_MIPS16_CALL16: | |
2120 | case R_MIPS16_HI16: | |
2121 | case R_MIPS16_LO16: | |
d0f13682 CLT |
2122 | case R_MIPS16_TLS_GD: |
2123 | case R_MIPS16_TLS_LDM: | |
2124 | case R_MIPS16_TLS_DTPREL_HI16: | |
2125 | case R_MIPS16_TLS_DTPREL_LO16: | |
2126 | case R_MIPS16_TLS_GOTTPREL: | |
2127 | case R_MIPS16_TLS_TPREL_HI16: | |
2128 | case R_MIPS16_TLS_TPREL_LO16: | |
c9775dde | 2129 | case R_MIPS16_PC16_S1: |
738e5348 RS |
2130 | return TRUE; |
2131 | ||
2132 | default: | |
2133 | return FALSE; | |
2134 | } | |
2135 | } | |
2136 | ||
df58fc94 RS |
2137 | /* Check if a microMIPS reloc. */ |
2138 | ||
2139 | static inline bfd_boolean | |
2140 | micromips_reloc_p (unsigned int r_type) | |
2141 | { | |
2142 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
2143 | } | |
2144 | ||
2145 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
2146 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
2147 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
2148 | ||
2149 | static inline bfd_boolean | |
2150 | micromips_reloc_shuffle_p (unsigned int r_type) | |
2151 | { | |
2152 | return (micromips_reloc_p (r_type) | |
2153 | && r_type != R_MICROMIPS_PC7_S1 | |
2154 | && r_type != R_MICROMIPS_PC10_S1); | |
2155 | } | |
2156 | ||
738e5348 RS |
2157 | static inline bfd_boolean |
2158 | got16_reloc_p (int r_type) | |
2159 | { | |
df58fc94 RS |
2160 | return (r_type == R_MIPS_GOT16 |
2161 | || r_type == R_MIPS16_GOT16 | |
2162 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
2163 | } |
2164 | ||
2165 | static inline bfd_boolean | |
2166 | call16_reloc_p (int r_type) | |
2167 | { | |
df58fc94 RS |
2168 | return (r_type == R_MIPS_CALL16 |
2169 | || r_type == R_MIPS16_CALL16 | |
2170 | || r_type == R_MICROMIPS_CALL16); | |
2171 | } | |
2172 | ||
2173 | static inline bfd_boolean | |
2174 | got_disp_reloc_p (unsigned int r_type) | |
2175 | { | |
2176 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
2177 | } | |
2178 | ||
2179 | static inline bfd_boolean | |
2180 | got_page_reloc_p (unsigned int r_type) | |
2181 | { | |
2182 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
2183 | } | |
2184 | ||
df58fc94 RS |
2185 | static inline bfd_boolean |
2186 | got_lo16_reloc_p (unsigned int r_type) | |
2187 | { | |
2188 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2189 | } | |
2190 | ||
2191 | static inline bfd_boolean | |
2192 | call_hi16_reloc_p (unsigned int r_type) | |
2193 | { | |
2194 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2195 | } | |
2196 | ||
2197 | static inline bfd_boolean | |
2198 | call_lo16_reloc_p (unsigned int r_type) | |
2199 | { | |
2200 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2201 | } |
2202 | ||
2203 | static inline bfd_boolean | |
2204 | hi16_reloc_p (int r_type) | |
2205 | { | |
df58fc94 RS |
2206 | return (r_type == R_MIPS_HI16 |
2207 | || r_type == R_MIPS16_HI16 | |
7361da2c AB |
2208 | || r_type == R_MICROMIPS_HI16 |
2209 | || r_type == R_MIPS_PCHI16); | |
738e5348 | 2210 | } |
d6f16593 | 2211 | |
738e5348 RS |
2212 | static inline bfd_boolean |
2213 | lo16_reloc_p (int r_type) | |
2214 | { | |
df58fc94 RS |
2215 | return (r_type == R_MIPS_LO16 |
2216 | || r_type == R_MIPS16_LO16 | |
7361da2c AB |
2217 | || r_type == R_MICROMIPS_LO16 |
2218 | || r_type == R_MIPS_PCLO16); | |
738e5348 RS |
2219 | } |
2220 | ||
2221 | static inline bfd_boolean | |
2222 | mips16_call_reloc_p (int r_type) | |
2223 | { | |
2224 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2225 | } | |
d6f16593 | 2226 | |
38a7df63 CF |
2227 | static inline bfd_boolean |
2228 | jal_reloc_p (int r_type) | |
2229 | { | |
df58fc94 RS |
2230 | return (r_type == R_MIPS_26 |
2231 | || r_type == R_MIPS16_26 | |
2232 | || r_type == R_MICROMIPS_26_S1); | |
2233 | } | |
2234 | ||
99aefae6 MR |
2235 | static inline bfd_boolean |
2236 | b_reloc_p (int r_type) | |
2237 | { | |
2238 | return (r_type == R_MIPS_PC26_S2 | |
2239 | || r_type == R_MIPS_PC21_S2 | |
2240 | || r_type == R_MIPS_PC16 | |
c9775dde | 2241 | || r_type == R_MIPS_GNU_REL16_S2 |
9d862524 MR |
2242 | || r_type == R_MIPS16_PC16_S1 |
2243 | || r_type == R_MICROMIPS_PC16_S1 | |
2244 | || r_type == R_MICROMIPS_PC10_S1 | |
2245 | || r_type == R_MICROMIPS_PC7_S1); | |
99aefae6 MR |
2246 | } |
2247 | ||
7361da2c AB |
2248 | static inline bfd_boolean |
2249 | aligned_pcrel_reloc_p (int r_type) | |
2250 | { | |
2251 | return (r_type == R_MIPS_PC18_S3 | |
2252 | || r_type == R_MIPS_PC19_S2); | |
2253 | } | |
2254 | ||
9d862524 MR |
2255 | static inline bfd_boolean |
2256 | branch_reloc_p (int r_type) | |
2257 | { | |
2258 | return (r_type == R_MIPS_26 | |
2259 | || r_type == R_MIPS_PC26_S2 | |
2260 | || r_type == R_MIPS_PC21_S2 | |
2261 | || r_type == R_MIPS_PC16 | |
2262 | || r_type == R_MIPS_GNU_REL16_S2); | |
2263 | } | |
2264 | ||
c9775dde MR |
2265 | static inline bfd_boolean |
2266 | mips16_branch_reloc_p (int r_type) | |
2267 | { | |
2268 | return (r_type == R_MIPS16_26 | |
2269 | || r_type == R_MIPS16_PC16_S1); | |
2270 | } | |
2271 | ||
df58fc94 RS |
2272 | static inline bfd_boolean |
2273 | micromips_branch_reloc_p (int r_type) | |
2274 | { | |
2275 | return (r_type == R_MICROMIPS_26_S1 | |
2276 | || r_type == R_MICROMIPS_PC16_S1 | |
2277 | || r_type == R_MICROMIPS_PC10_S1 | |
2278 | || r_type == R_MICROMIPS_PC7_S1); | |
2279 | } | |
2280 | ||
2281 | static inline bfd_boolean | |
2282 | tls_gd_reloc_p (unsigned int r_type) | |
2283 | { | |
d0f13682 CLT |
2284 | return (r_type == R_MIPS_TLS_GD |
2285 | || r_type == R_MIPS16_TLS_GD | |
2286 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2287 | } |
2288 | ||
2289 | static inline bfd_boolean | |
2290 | tls_ldm_reloc_p (unsigned int r_type) | |
2291 | { | |
d0f13682 CLT |
2292 | return (r_type == R_MIPS_TLS_LDM |
2293 | || r_type == R_MIPS16_TLS_LDM | |
2294 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2295 | } |
2296 | ||
2297 | static inline bfd_boolean | |
2298 | tls_gottprel_reloc_p (unsigned int r_type) | |
2299 | { | |
d0f13682 CLT |
2300 | return (r_type == R_MIPS_TLS_GOTTPREL |
2301 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2302 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2303 | } |
2304 | ||
d6f16593 | 2305 | void |
df58fc94 RS |
2306 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
2307 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2308 | { |
df58fc94 | 2309 | bfd_vma first, second, val; |
d6f16593 | 2310 | |
df58fc94 | 2311 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2312 | return; |
2313 | ||
df58fc94 RS |
2314 | /* Pick up the first and second halfwords of the instruction. */ |
2315 | first = bfd_get_16 (abfd, data); | |
2316 | second = bfd_get_16 (abfd, data + 2); | |
2317 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2318 | val = first << 16 | second; | |
2319 | else if (r_type != R_MIPS16_26) | |
2320 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2321 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2322 | else |
df58fc94 RS |
2323 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2324 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2325 | bfd_put_32 (abfd, val, data); |
2326 | } | |
2327 | ||
2328 | void | |
df58fc94 RS |
2329 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
2330 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2331 | { |
df58fc94 | 2332 | bfd_vma first, second, val; |
d6f16593 | 2333 | |
df58fc94 | 2334 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2335 | return; |
2336 | ||
2337 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2338 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2339 | { |
df58fc94 RS |
2340 | second = val & 0xffff; |
2341 | first = val >> 16; | |
2342 | } | |
2343 | else if (r_type != R_MIPS16_26) | |
2344 | { | |
2345 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2346 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2347 | } |
2348 | else | |
2349 | { | |
df58fc94 RS |
2350 | second = val & 0xffff; |
2351 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2352 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2353 | } |
df58fc94 RS |
2354 | bfd_put_16 (abfd, second, data + 2); |
2355 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2356 | } |
2357 | ||
b49e97c9 | 2358 | bfd_reloc_status_type |
9719ad41 RS |
2359 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2360 | arelent *reloc_entry, asection *input_section, | |
2361 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
2362 | { |
2363 | bfd_vma relocation; | |
a7ebbfdf | 2364 | bfd_signed_vma val; |
30ac9238 | 2365 | bfd_reloc_status_type status; |
b49e97c9 TS |
2366 | |
2367 | if (bfd_is_com_section (symbol->section)) | |
2368 | relocation = 0; | |
2369 | else | |
2370 | relocation = symbol->value; | |
2371 | ||
2372 | relocation += symbol->section->output_section->vma; | |
2373 | relocation += symbol->section->output_offset; | |
2374 | ||
07515404 | 2375 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
2376 | return bfd_reloc_outofrange; |
2377 | ||
b49e97c9 | 2378 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2379 | val = reloc_entry->addend; |
2380 | ||
30ac9238 | 2381 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2382 | |
b49e97c9 | 2383 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2384 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2385 | an external symbol. */ |
1049f94e | 2386 | if (! relocatable |
b49e97c9 TS |
2387 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2388 | val += relocation - gp; | |
2389 | ||
a7ebbfdf TS |
2390 | if (reloc_entry->howto->partial_inplace) |
2391 | { | |
30ac9238 RS |
2392 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2393 | (bfd_byte *) data | |
2394 | + reloc_entry->address); | |
2395 | if (status != bfd_reloc_ok) | |
2396 | return status; | |
a7ebbfdf TS |
2397 | } |
2398 | else | |
2399 | reloc_entry->addend = val; | |
b49e97c9 | 2400 | |
1049f94e | 2401 | if (relocatable) |
b49e97c9 | 2402 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2403 | |
2404 | return bfd_reloc_ok; | |
2405 | } | |
2406 | ||
2407 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2408 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2409 | that contains the relocation field and DATA points to the start of | |
2410 | INPUT_SECTION. */ | |
2411 | ||
2412 | struct mips_hi16 | |
2413 | { | |
2414 | struct mips_hi16 *next; | |
2415 | bfd_byte *data; | |
2416 | asection *input_section; | |
2417 | arelent rel; | |
2418 | }; | |
2419 | ||
2420 | /* FIXME: This should not be a static variable. */ | |
2421 | ||
2422 | static struct mips_hi16 *mips_hi16_list; | |
2423 | ||
2424 | /* A howto special_function for REL *HI16 relocations. We can only | |
2425 | calculate the correct value once we've seen the partnering | |
2426 | *LO16 relocation, so just save the information for later. | |
2427 | ||
2428 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2429 | However, as a GNU extension, we permit an arbitrary number of | |
2430 | *HI16s to be associated with a single *LO16. This significantly | |
2431 | simplies the relocation handling in gcc. */ | |
2432 | ||
2433 | bfd_reloc_status_type | |
2434 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2435 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2436 | asection *input_section, bfd *output_bfd, | |
2437 | char **error_message ATTRIBUTE_UNUSED) | |
2438 | { | |
2439 | struct mips_hi16 *n; | |
2440 | ||
07515404 | 2441 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2442 | return bfd_reloc_outofrange; |
2443 | ||
2444 | n = bfd_malloc (sizeof *n); | |
2445 | if (n == NULL) | |
2446 | return bfd_reloc_outofrange; | |
2447 | ||
2448 | n->next = mips_hi16_list; | |
2449 | n->data = data; | |
2450 | n->input_section = input_section; | |
2451 | n->rel = *reloc_entry; | |
2452 | mips_hi16_list = n; | |
2453 | ||
2454 | if (output_bfd != NULL) | |
2455 | reloc_entry->address += input_section->output_offset; | |
2456 | ||
2457 | return bfd_reloc_ok; | |
2458 | } | |
2459 | ||
738e5348 | 2460 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2461 | like any other 16-bit relocation when applied to global symbols, but is |
2462 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2463 | ||
2464 | bfd_reloc_status_type | |
2465 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2466 | void *data, asection *input_section, | |
2467 | bfd *output_bfd, char **error_message) | |
2468 | { | |
2469 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2470 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2471 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2472 | /* The relocation is against a global symbol. */ | |
2473 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2474 | input_section, output_bfd, | |
2475 | error_message); | |
2476 | ||
2477 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2478 | input_section, output_bfd, error_message); | |
2479 | } | |
2480 | ||
2481 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2482 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2483 | any partnering high-part relocations as well. */ | |
2484 | ||
2485 | bfd_reloc_status_type | |
2486 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2487 | void *data, asection *input_section, | |
2488 | bfd *output_bfd, char **error_message) | |
2489 | { | |
2490 | bfd_vma vallo; | |
d6f16593 | 2491 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2492 | |
07515404 | 2493 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2494 | return bfd_reloc_outofrange; |
2495 | ||
df58fc94 | 2496 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
d6f16593 | 2497 | location); |
df58fc94 RS |
2498 | vallo = bfd_get_32 (abfd, location); |
2499 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2500 | location); | |
d6f16593 | 2501 | |
30ac9238 RS |
2502 | while (mips_hi16_list != NULL) |
2503 | { | |
2504 | bfd_reloc_status_type ret; | |
2505 | struct mips_hi16 *hi; | |
2506 | ||
2507 | hi = mips_hi16_list; | |
2508 | ||
738e5348 RS |
2509 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2510 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2511 | relocation (with a rightshift of 16). However, since GOT16 |
2512 | relocations can also be used with global symbols, their howto | |
2513 | has a rightshift of 0. */ | |
2514 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2515 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2516 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2517 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
df58fc94 RS |
2518 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
2519 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, FALSE); | |
30ac9238 RS |
2520 | |
2521 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2522 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2523 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2524 | ||
30ac9238 RS |
2525 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2526 | hi->input_section, output_bfd, | |
2527 | error_message); | |
2528 | if (ret != bfd_reloc_ok) | |
2529 | return ret; | |
2530 | ||
2531 | mips_hi16_list = hi->next; | |
2532 | free (hi); | |
2533 | } | |
2534 | ||
2535 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2536 | input_section, output_bfd, | |
2537 | error_message); | |
2538 | } | |
2539 | ||
2540 | /* A generic howto special_function. This calculates and installs the | |
2541 | relocation itself, thus avoiding the oft-discussed problems in | |
2542 | bfd_perform_relocation and bfd_install_relocation. */ | |
2543 | ||
2544 | bfd_reloc_status_type | |
2545 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2546 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2547 | asection *input_section, bfd *output_bfd, | |
2548 | char **error_message ATTRIBUTE_UNUSED) | |
2549 | { | |
2550 | bfd_signed_vma val; | |
2551 | bfd_reloc_status_type status; | |
2552 | bfd_boolean relocatable; | |
2553 | ||
2554 | relocatable = (output_bfd != NULL); | |
2555 | ||
07515404 | 2556 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2557 | return bfd_reloc_outofrange; |
2558 | ||
2559 | /* Build up the field adjustment in VAL. */ | |
2560 | val = 0; | |
2561 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2562 | { | |
2563 | /* Either we're calculating the final field value or we have a | |
2564 | relocation against a section symbol. Add in the section's | |
2565 | offset or address. */ | |
2566 | val += symbol->section->output_section->vma; | |
2567 | val += symbol->section->output_offset; | |
2568 | } | |
2569 | ||
2570 | if (!relocatable) | |
2571 | { | |
2572 | /* We're calculating the final field value. Add in the symbol's value | |
2573 | and, if pc-relative, subtract the address of the field itself. */ | |
2574 | val += symbol->value; | |
2575 | if (reloc_entry->howto->pc_relative) | |
2576 | { | |
2577 | val -= input_section->output_section->vma; | |
2578 | val -= input_section->output_offset; | |
2579 | val -= reloc_entry->address; | |
2580 | } | |
2581 | } | |
2582 | ||
2583 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2584 | in the output file, and if the relocation uses a separate addend, | |
2585 | we just need to add VAL to that addend. Otherwise we need to add | |
2586 | VAL to the relocation field itself. */ | |
2587 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2588 | reloc_entry->addend += val; | |
2589 | else | |
2590 | { | |
d6f16593 MR |
2591 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2592 | ||
30ac9238 RS |
2593 | /* Add in the separate addend, if any. */ |
2594 | val += reloc_entry->addend; | |
2595 | ||
2596 | /* Add VAL to the relocation field. */ | |
df58fc94 RS |
2597 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2598 | location); | |
30ac9238 | 2599 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2600 | location); |
df58fc94 RS |
2601 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, |
2602 | location); | |
d6f16593 | 2603 | |
30ac9238 RS |
2604 | if (status != bfd_reloc_ok) |
2605 | return status; | |
2606 | } | |
2607 | ||
2608 | if (relocatable) | |
2609 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2610 | |
2611 | return bfd_reloc_ok; | |
2612 | } | |
2613 | \f | |
2614 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2615 | on the equivalence of the two elements of the union. */ | |
2616 | ||
2617 | static void | |
9719ad41 RS |
2618 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2619 | Elf32_gptab *in) | |
b49e97c9 TS |
2620 | { |
2621 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2622 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2623 | } | |
2624 | ||
2625 | static void | |
9719ad41 RS |
2626 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2627 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2628 | { |
2629 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2630 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2631 | } | |
2632 | ||
2633 | static void | |
9719ad41 RS |
2634 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2635 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2636 | { |
2637 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2638 | H_PUT_32 (abfd, in->num, ex->num); | |
2639 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2640 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2641 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2642 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2643 | } | |
2644 | ||
2645 | static void | |
9719ad41 RS |
2646 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2647 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2648 | { |
2649 | unsigned long l; | |
2650 | ||
2651 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2652 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2653 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2654 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2655 | H_PUT_32 (abfd, l, ex->info); | |
2656 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2657 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2658 | } | |
b49e97c9 TS |
2659 | \f |
2660 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2661 | routines swap this structure in and out. They are used outside of | |
2662 | BFD, so they are globally visible. */ | |
2663 | ||
2664 | void | |
9719ad41 RS |
2665 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2666 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2667 | { |
2668 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2669 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2670 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2671 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2672 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2673 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2674 | } | |
2675 | ||
2676 | void | |
9719ad41 RS |
2677 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2678 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2679 | { |
2680 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2681 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2682 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2683 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2684 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2685 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2686 | } | |
2687 | ||
2688 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2689 | information in an Elf64_Reginfo structure. These routines swap | |
2690 | them in and out. They are globally visible because they are used | |
2691 | outside of BFD. These routines are here so that gas can call them | |
2692 | without worrying about whether the 64 bit ABI has been included. */ | |
2693 | ||
2694 | void | |
9719ad41 RS |
2695 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2696 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2697 | { |
2698 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2699 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2700 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2701 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2702 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2703 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2704 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2705 | } | |
2706 | ||
2707 | void | |
9719ad41 RS |
2708 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2709 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2710 | { |
2711 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2712 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2713 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2714 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2715 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2716 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2717 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2718 | } | |
2719 | ||
2720 | /* Swap in an options header. */ | |
2721 | ||
2722 | void | |
9719ad41 RS |
2723 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2724 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2725 | { |
2726 | in->kind = H_GET_8 (abfd, ex->kind); | |
2727 | in->size = H_GET_8 (abfd, ex->size); | |
2728 | in->section = H_GET_16 (abfd, ex->section); | |
2729 | in->info = H_GET_32 (abfd, ex->info); | |
2730 | } | |
2731 | ||
2732 | /* Swap out an options header. */ | |
2733 | ||
2734 | void | |
9719ad41 RS |
2735 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2736 | Elf_External_Options *ex) | |
b49e97c9 TS |
2737 | { |
2738 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2739 | H_PUT_8 (abfd, in->size, ex->size); | |
2740 | H_PUT_16 (abfd, in->section, ex->section); | |
2741 | H_PUT_32 (abfd, in->info, ex->info); | |
2742 | } | |
351cdf24 MF |
2743 | |
2744 | /* Swap in an abiflags structure. */ | |
2745 | ||
2746 | void | |
2747 | bfd_mips_elf_swap_abiflags_v0_in (bfd *abfd, | |
2748 | const Elf_External_ABIFlags_v0 *ex, | |
2749 | Elf_Internal_ABIFlags_v0 *in) | |
2750 | { | |
2751 | in->version = H_GET_16 (abfd, ex->version); | |
2752 | in->isa_level = H_GET_8 (abfd, ex->isa_level); | |
2753 | in->isa_rev = H_GET_8 (abfd, ex->isa_rev); | |
2754 | in->gpr_size = H_GET_8 (abfd, ex->gpr_size); | |
2755 | in->cpr1_size = H_GET_8 (abfd, ex->cpr1_size); | |
2756 | in->cpr2_size = H_GET_8 (abfd, ex->cpr2_size); | |
2757 | in->fp_abi = H_GET_8 (abfd, ex->fp_abi); | |
2758 | in->isa_ext = H_GET_32 (abfd, ex->isa_ext); | |
2759 | in->ases = H_GET_32 (abfd, ex->ases); | |
2760 | in->flags1 = H_GET_32 (abfd, ex->flags1); | |
2761 | in->flags2 = H_GET_32 (abfd, ex->flags2); | |
2762 | } | |
2763 | ||
2764 | /* Swap out an abiflags structure. */ | |
2765 | ||
2766 | void | |
2767 | bfd_mips_elf_swap_abiflags_v0_out (bfd *abfd, | |
2768 | const Elf_Internal_ABIFlags_v0 *in, | |
2769 | Elf_External_ABIFlags_v0 *ex) | |
2770 | { | |
2771 | H_PUT_16 (abfd, in->version, ex->version); | |
2772 | H_PUT_8 (abfd, in->isa_level, ex->isa_level); | |
2773 | H_PUT_8 (abfd, in->isa_rev, ex->isa_rev); | |
2774 | H_PUT_8 (abfd, in->gpr_size, ex->gpr_size); | |
2775 | H_PUT_8 (abfd, in->cpr1_size, ex->cpr1_size); | |
2776 | H_PUT_8 (abfd, in->cpr2_size, ex->cpr2_size); | |
2777 | H_PUT_8 (abfd, in->fp_abi, ex->fp_abi); | |
2778 | H_PUT_32 (abfd, in->isa_ext, ex->isa_ext); | |
2779 | H_PUT_32 (abfd, in->ases, ex->ases); | |
2780 | H_PUT_32 (abfd, in->flags1, ex->flags1); | |
2781 | H_PUT_32 (abfd, in->flags2, ex->flags2); | |
2782 | } | |
b49e97c9 TS |
2783 | \f |
2784 | /* This function is called via qsort() to sort the dynamic relocation | |
2785 | entries by increasing r_symndx value. */ | |
2786 | ||
2787 | static int | |
9719ad41 | 2788 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2789 | { |
947216bf AM |
2790 | Elf_Internal_Rela int_reloc1; |
2791 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2792 | int diff; |
b49e97c9 | 2793 | |
947216bf AM |
2794 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2795 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2796 | |
6870500c RS |
2797 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2798 | if (diff != 0) | |
2799 | return diff; | |
2800 | ||
2801 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2802 | return -1; | |
2803 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2804 | return 1; | |
2805 | return 0; | |
b49e97c9 TS |
2806 | } |
2807 | ||
f4416af6 AO |
2808 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2809 | ||
2810 | static int | |
7e3102a7 AM |
2811 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2812 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2813 | { |
7e3102a7 | 2814 | #ifdef BFD64 |
f4416af6 AO |
2815 | Elf_Internal_Rela int_reloc1[3]; |
2816 | Elf_Internal_Rela int_reloc2[3]; | |
2817 | ||
2818 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2819 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2820 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2821 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2822 | ||
6870500c RS |
2823 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2824 | return -1; | |
2825 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2826 | return 1; | |
2827 | ||
2828 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2829 | return -1; | |
2830 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2831 | return 1; | |
2832 | return 0; | |
7e3102a7 AM |
2833 | #else |
2834 | abort (); | |
2835 | #endif | |
f4416af6 AO |
2836 | } |
2837 | ||
2838 | ||
b49e97c9 TS |
2839 | /* This routine is used to write out ECOFF debugging external symbol |
2840 | information. It is called via mips_elf_link_hash_traverse. The | |
2841 | ECOFF external symbol information must match the ELF external | |
2842 | symbol information. Unfortunately, at this point we don't know | |
2843 | whether a symbol is required by reloc information, so the two | |
2844 | tables may wind up being different. We must sort out the external | |
2845 | symbol information before we can set the final size of the .mdebug | |
2846 | section, and we must set the size of the .mdebug section before we | |
2847 | can relocate any sections, and we can't know which symbols are | |
2848 | required by relocation until we relocate the sections. | |
2849 | Fortunately, it is relatively unlikely that any symbol will be | |
2850 | stripped but required by a reloc. In particular, it can not happen | |
2851 | when generating a final executable. */ | |
2852 | ||
b34976b6 | 2853 | static bfd_boolean |
9719ad41 | 2854 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2855 | { |
9719ad41 | 2856 | struct extsym_info *einfo = data; |
b34976b6 | 2857 | bfd_boolean strip; |
b49e97c9 TS |
2858 | asection *sec, *output_section; |
2859 | ||
b49e97c9 | 2860 | if (h->root.indx == -2) |
b34976b6 | 2861 | strip = FALSE; |
f5385ebf | 2862 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2863 | || h->root.ref_dynamic |
2864 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2865 | && !h->root.def_regular |
2866 | && !h->root.ref_regular) | |
b34976b6 | 2867 | strip = TRUE; |
b49e97c9 TS |
2868 | else if (einfo->info->strip == strip_all |
2869 | || (einfo->info->strip == strip_some | |
2870 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2871 | h->root.root.root.string, | |
b34976b6 AM |
2872 | FALSE, FALSE) == NULL)) |
2873 | strip = TRUE; | |
b49e97c9 | 2874 | else |
b34976b6 | 2875 | strip = FALSE; |
b49e97c9 TS |
2876 | |
2877 | if (strip) | |
b34976b6 | 2878 | return TRUE; |
b49e97c9 TS |
2879 | |
2880 | if (h->esym.ifd == -2) | |
2881 | { | |
2882 | h->esym.jmptbl = 0; | |
2883 | h->esym.cobol_main = 0; | |
2884 | h->esym.weakext = 0; | |
2885 | h->esym.reserved = 0; | |
2886 | h->esym.ifd = ifdNil; | |
2887 | h->esym.asym.value = 0; | |
2888 | h->esym.asym.st = stGlobal; | |
2889 | ||
2890 | if (h->root.root.type == bfd_link_hash_undefined | |
2891 | || h->root.root.type == bfd_link_hash_undefweak) | |
2892 | { | |
2893 | const char *name; | |
2894 | ||
2895 | /* Use undefined class. Also, set class and type for some | |
07d6d2b8 | 2896 | special symbols. */ |
b49e97c9 TS |
2897 | name = h->root.root.root.string; |
2898 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2899 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2900 | { | |
2901 | h->esym.asym.sc = scData; | |
2902 | h->esym.asym.st = stLabel; | |
2903 | h->esym.asym.value = 0; | |
2904 | } | |
2905 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2906 | { | |
2907 | h->esym.asym.sc = scAbs; | |
2908 | h->esym.asym.st = stLabel; | |
2909 | h->esym.asym.value = | |
2910 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2911 | } | |
b49e97c9 TS |
2912 | else |
2913 | h->esym.asym.sc = scUndefined; | |
2914 | } | |
2915 | else if (h->root.root.type != bfd_link_hash_defined | |
2916 | && h->root.root.type != bfd_link_hash_defweak) | |
2917 | h->esym.asym.sc = scAbs; | |
2918 | else | |
2919 | { | |
2920 | const char *name; | |
2921 | ||
2922 | sec = h->root.root.u.def.section; | |
2923 | output_section = sec->output_section; | |
2924 | ||
2925 | /* When making a shared library and symbol h is the one from | |
2926 | the another shared library, OUTPUT_SECTION may be null. */ | |
2927 | if (output_section == NULL) | |
2928 | h->esym.asym.sc = scUndefined; | |
2929 | else | |
2930 | { | |
2931 | name = bfd_section_name (output_section->owner, output_section); | |
2932 | ||
2933 | if (strcmp (name, ".text") == 0) | |
2934 | h->esym.asym.sc = scText; | |
2935 | else if (strcmp (name, ".data") == 0) | |
2936 | h->esym.asym.sc = scData; | |
2937 | else if (strcmp (name, ".sdata") == 0) | |
2938 | h->esym.asym.sc = scSData; | |
2939 | else if (strcmp (name, ".rodata") == 0 | |
2940 | || strcmp (name, ".rdata") == 0) | |
2941 | h->esym.asym.sc = scRData; | |
2942 | else if (strcmp (name, ".bss") == 0) | |
2943 | h->esym.asym.sc = scBss; | |
2944 | else if (strcmp (name, ".sbss") == 0) | |
2945 | h->esym.asym.sc = scSBss; | |
2946 | else if (strcmp (name, ".init") == 0) | |
2947 | h->esym.asym.sc = scInit; | |
2948 | else if (strcmp (name, ".fini") == 0) | |
2949 | h->esym.asym.sc = scFini; | |
2950 | else | |
2951 | h->esym.asym.sc = scAbs; | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | h->esym.asym.reserved = 0; | |
2956 | h->esym.asym.index = indexNil; | |
2957 | } | |
2958 | ||
2959 | if (h->root.root.type == bfd_link_hash_common) | |
2960 | h->esym.asym.value = h->root.root.u.c.size; | |
2961 | else if (h->root.root.type == bfd_link_hash_defined | |
2962 | || h->root.root.type == bfd_link_hash_defweak) | |
2963 | { | |
2964 | if (h->esym.asym.sc == scCommon) | |
2965 | h->esym.asym.sc = scBss; | |
2966 | else if (h->esym.asym.sc == scSCommon) | |
2967 | h->esym.asym.sc = scSBss; | |
2968 | ||
2969 | sec = h->root.root.u.def.section; | |
2970 | output_section = sec->output_section; | |
2971 | if (output_section != NULL) | |
2972 | h->esym.asym.value = (h->root.root.u.def.value | |
2973 | + sec->output_offset | |
2974 | + output_section->vma); | |
2975 | else | |
2976 | h->esym.asym.value = 0; | |
2977 | } | |
33bb52fb | 2978 | else |
b49e97c9 TS |
2979 | { |
2980 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2981 | |
2982 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2983 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2984 | |
33bb52fb | 2985 | if (hd->needs_lazy_stub) |
b49e97c9 | 2986 | { |
1bbce132 MR |
2987 | BFD_ASSERT (hd->root.plt.plist != NULL); |
2988 | BFD_ASSERT (hd->root.plt.plist->stub_offset != MINUS_ONE); | |
b49e97c9 TS |
2989 | /* Set type and value for a symbol with a function stub. */ |
2990 | h->esym.asym.st = stProc; | |
2991 | sec = hd->root.root.u.def.section; | |
2992 | if (sec == NULL) | |
2993 | h->esym.asym.value = 0; | |
2994 | else | |
2995 | { | |
2996 | output_section = sec->output_section; | |
2997 | if (output_section != NULL) | |
1bbce132 | 2998 | h->esym.asym.value = (hd->root.plt.plist->stub_offset |
b49e97c9 TS |
2999 | + sec->output_offset |
3000 | + output_section->vma); | |
3001 | else | |
3002 | h->esym.asym.value = 0; | |
3003 | } | |
b49e97c9 TS |
3004 | } |
3005 | } | |
3006 | ||
3007 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
3008 | h->root.root.root.string, | |
3009 | &h->esym)) | |
3010 | { | |
b34976b6 AM |
3011 | einfo->failed = TRUE; |
3012 | return FALSE; | |
b49e97c9 TS |
3013 | } |
3014 | ||
b34976b6 | 3015 | return TRUE; |
b49e97c9 TS |
3016 | } |
3017 | ||
3018 | /* A comparison routine used to sort .gptab entries. */ | |
3019 | ||
3020 | static int | |
9719ad41 | 3021 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 3022 | { |
9719ad41 RS |
3023 | const Elf32_gptab *a1 = p1; |
3024 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
3025 | |
3026 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
3027 | } | |
3028 | \f | |
b15e6682 | 3029 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
3030 | |
3031 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
3032 | hash number. */ | |
3033 | ||
3034 | static INLINE hashval_t | |
9719ad41 | 3035 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
3036 | { |
3037 | #ifdef BFD64 | |
3038 | return addr + (addr >> 32); | |
3039 | #else | |
3040 | return addr; | |
3041 | #endif | |
3042 | } | |
3043 | ||
f4416af6 | 3044 | static hashval_t |
d9bf376d | 3045 | mips_elf_got_entry_hash (const void *entry_) |
f4416af6 AO |
3046 | { |
3047 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
3048 | ||
e641e783 | 3049 | return (entry->symndx |
9ab066b4 RS |
3050 | + ((entry->tls_type == GOT_TLS_LDM) << 18) |
3051 | + (entry->tls_type == GOT_TLS_LDM ? 0 | |
e641e783 RS |
3052 | : !entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
3053 | : entry->symndx >= 0 ? (entry->abfd->id | |
3054 | + mips_elf_hash_bfd_vma (entry->d.addend)) | |
3055 | : entry->d.h->root.root.root.hash)); | |
f4416af6 AO |
3056 | } |
3057 | ||
3058 | static int | |
3dff0dd1 | 3059 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3060 | { |
3061 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
3062 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
3063 | ||
e641e783 | 3064 | return (e1->symndx == e2->symndx |
9ab066b4 RS |
3065 | && e1->tls_type == e2->tls_type |
3066 | && (e1->tls_type == GOT_TLS_LDM ? TRUE | |
e641e783 RS |
3067 | : !e1->abfd ? !e2->abfd && e1->d.address == e2->d.address |
3068 | : e1->symndx >= 0 ? (e1->abfd == e2->abfd | |
3069 | && e1->d.addend == e2->d.addend) | |
3070 | : e2->abfd && e1->d.h == e2->d.h)); | |
b15e6682 | 3071 | } |
c224138d | 3072 | |
13db6b44 RS |
3073 | static hashval_t |
3074 | mips_got_page_ref_hash (const void *ref_) | |
3075 | { | |
3076 | const struct mips_got_page_ref *ref; | |
3077 | ||
3078 | ref = (const struct mips_got_page_ref *) ref_; | |
3079 | return ((ref->symndx >= 0 | |
3080 | ? (hashval_t) (ref->u.abfd->id + ref->symndx) | |
3081 | : ref->u.h->root.root.root.hash) | |
3082 | + mips_elf_hash_bfd_vma (ref->addend)); | |
3083 | } | |
3084 | ||
3085 | static int | |
3086 | mips_got_page_ref_eq (const void *ref1_, const void *ref2_) | |
3087 | { | |
3088 | const struct mips_got_page_ref *ref1, *ref2; | |
3089 | ||
3090 | ref1 = (const struct mips_got_page_ref *) ref1_; | |
3091 | ref2 = (const struct mips_got_page_ref *) ref2_; | |
3092 | return (ref1->symndx == ref2->symndx | |
3093 | && (ref1->symndx < 0 | |
3094 | ? ref1->u.h == ref2->u.h | |
3095 | : ref1->u.abfd == ref2->u.abfd) | |
3096 | && ref1->addend == ref2->addend); | |
3097 | } | |
3098 | ||
c224138d RS |
3099 | static hashval_t |
3100 | mips_got_page_entry_hash (const void *entry_) | |
3101 | { | |
3102 | const struct mips_got_page_entry *entry; | |
3103 | ||
3104 | entry = (const struct mips_got_page_entry *) entry_; | |
13db6b44 | 3105 | return entry->sec->id; |
c224138d RS |
3106 | } |
3107 | ||
3108 | static int | |
3109 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
3110 | { | |
3111 | const struct mips_got_page_entry *entry1, *entry2; | |
3112 | ||
3113 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
3114 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
13db6b44 | 3115 | return entry1->sec == entry2->sec; |
c224138d | 3116 | } |
b15e6682 | 3117 | \f |
3dff0dd1 | 3118 | /* Create and return a new mips_got_info structure. */ |
5334aa52 RS |
3119 | |
3120 | static struct mips_got_info * | |
3dff0dd1 | 3121 | mips_elf_create_got_info (bfd *abfd) |
5334aa52 RS |
3122 | { |
3123 | struct mips_got_info *g; | |
3124 | ||
3125 | g = bfd_zalloc (abfd, sizeof (struct mips_got_info)); | |
3126 | if (g == NULL) | |
3127 | return NULL; | |
3128 | ||
3dff0dd1 RS |
3129 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
3130 | mips_elf_got_entry_eq, NULL); | |
5334aa52 RS |
3131 | if (g->got_entries == NULL) |
3132 | return NULL; | |
3133 | ||
13db6b44 RS |
3134 | g->got_page_refs = htab_try_create (1, mips_got_page_ref_hash, |
3135 | mips_got_page_ref_eq, NULL); | |
3136 | if (g->got_page_refs == NULL) | |
5334aa52 RS |
3137 | return NULL; |
3138 | ||
3139 | return g; | |
3140 | } | |
3141 | ||
ee227692 RS |
3142 | /* Return the GOT info for input bfd ABFD, trying to create a new one if |
3143 | CREATE_P and if ABFD doesn't already have a GOT. */ | |
3144 | ||
3145 | static struct mips_got_info * | |
3146 | mips_elf_bfd_got (bfd *abfd, bfd_boolean create_p) | |
3147 | { | |
3148 | struct mips_elf_obj_tdata *tdata; | |
3149 | ||
3150 | if (!is_mips_elf (abfd)) | |
3151 | return NULL; | |
3152 | ||
3153 | tdata = mips_elf_tdata (abfd); | |
3154 | if (!tdata->got && create_p) | |
3dff0dd1 | 3155 | tdata->got = mips_elf_create_got_info (abfd); |
ee227692 RS |
3156 | return tdata->got; |
3157 | } | |
3158 | ||
d7206569 RS |
3159 | /* Record that ABFD should use output GOT G. */ |
3160 | ||
3161 | static void | |
3162 | mips_elf_replace_bfd_got (bfd *abfd, struct mips_got_info *g) | |
3163 | { | |
3164 | struct mips_elf_obj_tdata *tdata; | |
3165 | ||
3166 | BFD_ASSERT (is_mips_elf (abfd)); | |
3167 | tdata = mips_elf_tdata (abfd); | |
3168 | if (tdata->got) | |
3169 | { | |
3170 | /* The GOT structure itself and the hash table entries are | |
3171 | allocated to a bfd, but the hash tables aren't. */ | |
3172 | htab_delete (tdata->got->got_entries); | |
13db6b44 RS |
3173 | htab_delete (tdata->got->got_page_refs); |
3174 | if (tdata->got->got_page_entries) | |
3175 | htab_delete (tdata->got->got_page_entries); | |
d7206569 RS |
3176 | } |
3177 | tdata->got = g; | |
3178 | } | |
3179 | ||
0a44bf69 RS |
3180 | /* Return the dynamic relocation section. If it doesn't exist, try to |
3181 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
3182 | if creation fails. */ | |
f4416af6 AO |
3183 | |
3184 | static asection * | |
0a44bf69 | 3185 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 3186 | { |
0a44bf69 | 3187 | const char *dname; |
f4416af6 | 3188 | asection *sreloc; |
0a44bf69 | 3189 | bfd *dynobj; |
f4416af6 | 3190 | |
0a44bf69 RS |
3191 | dname = MIPS_ELF_REL_DYN_NAME (info); |
3192 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 3193 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
3194 | if (sreloc == NULL && create_p) |
3195 | { | |
3d4d4302 AM |
3196 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
3197 | (SEC_ALLOC | |
3198 | | SEC_LOAD | |
3199 | | SEC_HAS_CONTENTS | |
3200 | | SEC_IN_MEMORY | |
3201 | | SEC_LINKER_CREATED | |
3202 | | SEC_READONLY)); | |
f4416af6 | 3203 | if (sreloc == NULL |
f4416af6 | 3204 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 3205 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
3206 | return NULL; |
3207 | } | |
3208 | return sreloc; | |
3209 | } | |
3210 | ||
e641e783 RS |
3211 | /* Return the GOT_TLS_* type required by relocation type R_TYPE. */ |
3212 | ||
3213 | static int | |
3214 | mips_elf_reloc_tls_type (unsigned int r_type) | |
3215 | { | |
3216 | if (tls_gd_reloc_p (r_type)) | |
3217 | return GOT_TLS_GD; | |
3218 | ||
3219 | if (tls_ldm_reloc_p (r_type)) | |
3220 | return GOT_TLS_LDM; | |
3221 | ||
3222 | if (tls_gottprel_reloc_p (r_type)) | |
3223 | return GOT_TLS_IE; | |
3224 | ||
9ab066b4 | 3225 | return GOT_TLS_NONE; |
e641e783 RS |
3226 | } |
3227 | ||
3228 | /* Return the number of GOT slots needed for GOT TLS type TYPE. */ | |
3229 | ||
3230 | static int | |
3231 | mips_tls_got_entries (unsigned int type) | |
3232 | { | |
3233 | switch (type) | |
3234 | { | |
3235 | case GOT_TLS_GD: | |
3236 | case GOT_TLS_LDM: | |
3237 | return 2; | |
3238 | ||
3239 | case GOT_TLS_IE: | |
3240 | return 1; | |
3241 | ||
9ab066b4 | 3242 | case GOT_TLS_NONE: |
e641e783 RS |
3243 | return 0; |
3244 | } | |
3245 | abort (); | |
3246 | } | |
3247 | ||
0f20cc35 DJ |
3248 | /* Count the number of relocations needed for a TLS GOT entry, with |
3249 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
3250 | is NULL). */ | |
3251 | ||
3252 | static int | |
3253 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
3254 | struct elf_link_hash_entry *h) | |
3255 | { | |
3256 | int indx = 0; | |
0f20cc35 DJ |
3257 | bfd_boolean need_relocs = FALSE; |
3258 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3259 | ||
1cb83cac MR |
3260 | if (h != NULL |
3261 | && h->dynindx != -1 | |
3262 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) | |
3263 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
0f20cc35 DJ |
3264 | indx = h->dynindx; |
3265 | ||
9143e72c | 3266 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3267 | && (h == NULL |
3268 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3269 | || h->root.type != bfd_link_hash_undefweak)) | |
3270 | need_relocs = TRUE; | |
3271 | ||
3272 | if (!need_relocs) | |
e641e783 | 3273 | return 0; |
0f20cc35 | 3274 | |
9ab066b4 | 3275 | switch (tls_type) |
0f20cc35 | 3276 | { |
e641e783 RS |
3277 | case GOT_TLS_GD: |
3278 | return indx != 0 ? 2 : 1; | |
0f20cc35 | 3279 | |
e641e783 RS |
3280 | case GOT_TLS_IE: |
3281 | return 1; | |
0f20cc35 | 3282 | |
e641e783 | 3283 | case GOT_TLS_LDM: |
9143e72c | 3284 | return bfd_link_dll (info) ? 1 : 0; |
0f20cc35 | 3285 | |
e641e783 RS |
3286 | default: |
3287 | return 0; | |
3288 | } | |
0f20cc35 DJ |
3289 | } |
3290 | ||
ab361d49 RS |
3291 | /* Add the number of GOT entries and TLS relocations required by ENTRY |
3292 | to G. */ | |
0f20cc35 | 3293 | |
ab361d49 RS |
3294 | static void |
3295 | mips_elf_count_got_entry (struct bfd_link_info *info, | |
3296 | struct mips_got_info *g, | |
3297 | struct mips_got_entry *entry) | |
0f20cc35 | 3298 | { |
9ab066b4 | 3299 | if (entry->tls_type) |
ab361d49 | 3300 | { |
9ab066b4 RS |
3301 | g->tls_gotno += mips_tls_got_entries (entry->tls_type); |
3302 | g->relocs += mips_tls_got_relocs (info, entry->tls_type, | |
ab361d49 RS |
3303 | entry->symndx < 0 |
3304 | ? &entry->d.h->root : NULL); | |
3305 | } | |
3306 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) | |
3307 | g->local_gotno += 1; | |
3308 | else | |
3309 | g->global_gotno += 1; | |
0f20cc35 DJ |
3310 | } |
3311 | ||
0f20cc35 DJ |
3312 | /* Output a simple dynamic relocation into SRELOC. */ |
3313 | ||
3314 | static void | |
3315 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3316 | asection *sreloc, | |
861fb55a | 3317 | unsigned long reloc_index, |
0f20cc35 DJ |
3318 | unsigned long indx, |
3319 | int r_type, | |
3320 | bfd_vma offset) | |
3321 | { | |
3322 | Elf_Internal_Rela rel[3]; | |
3323 | ||
3324 | memset (rel, 0, sizeof (rel)); | |
3325 | ||
3326 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3327 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3328 | ||
3329 | if (ABI_64_P (output_bfd)) | |
3330 | { | |
3331 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3332 | (output_bfd, &rel[0], | |
3333 | (sreloc->contents | |
861fb55a | 3334 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3335 | } |
3336 | else | |
3337 | bfd_elf32_swap_reloc_out | |
3338 | (output_bfd, &rel[0], | |
3339 | (sreloc->contents | |
861fb55a | 3340 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3341 | } |
3342 | ||
3343 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3344 | ||
3345 | static void | |
9ab066b4 RS |
3346 | mips_elf_initialize_tls_slots (bfd *abfd, struct bfd_link_info *info, |
3347 | struct mips_got_entry *entry, | |
0f20cc35 DJ |
3348 | struct mips_elf_link_hash_entry *h, |
3349 | bfd_vma value) | |
3350 | { | |
1cb83cac | 3351 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; |
23cc69b6 | 3352 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3353 | int indx; |
3354 | asection *sreloc, *sgot; | |
9ab066b4 | 3355 | bfd_vma got_offset, got_offset2; |
0f20cc35 DJ |
3356 | bfd_boolean need_relocs = FALSE; |
3357 | ||
23cc69b6 | 3358 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3359 | if (htab == NULL) |
3360 | return; | |
3361 | ||
ce558b89 | 3362 | sgot = htab->root.sgot; |
0f20cc35 DJ |
3363 | |
3364 | indx = 0; | |
1cb83cac MR |
3365 | if (h != NULL |
3366 | && h->root.dynindx != -1 | |
3367 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), &h->root) | |
3368 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3369 | indx = h->root.dynindx; | |
0f20cc35 | 3370 | |
9ab066b4 | 3371 | if (entry->tls_initialized) |
0f20cc35 DJ |
3372 | return; |
3373 | ||
9143e72c | 3374 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3375 | && (h == NULL |
3376 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3377 | || h->root.type != bfd_link_hash_undefweak)) | |
3378 | need_relocs = TRUE; | |
3379 | ||
3380 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3381 | be defined at all; assume that the value doesn't matter in that | |
3382 | case. Otherwise complain if we would use the value. */ | |
3383 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3384 | || h->root.root.type == bfd_link_hash_undefweak); | |
3385 | ||
3386 | /* Emit necessary relocations. */ | |
0a44bf69 | 3387 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
9ab066b4 | 3388 | got_offset = entry->gotidx; |
0f20cc35 | 3389 | |
9ab066b4 | 3390 | switch (entry->tls_type) |
0f20cc35 | 3391 | { |
e641e783 RS |
3392 | case GOT_TLS_GD: |
3393 | /* General Dynamic. */ | |
3394 | got_offset2 = got_offset + MIPS_ELF_GOT_SIZE (abfd); | |
0f20cc35 DJ |
3395 | |
3396 | if (need_relocs) | |
3397 | { | |
3398 | mips_elf_output_dynamic_relocation | |
861fb55a | 3399 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3400 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
e641e783 | 3401 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3402 | |
3403 | if (indx) | |
3404 | mips_elf_output_dynamic_relocation | |
861fb55a | 3405 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3406 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
e641e783 | 3407 | sgot->output_offset + sgot->output_section->vma + got_offset2); |
0f20cc35 DJ |
3408 | else |
3409 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
e641e783 | 3410 | sgot->contents + got_offset2); |
0f20cc35 DJ |
3411 | } |
3412 | else | |
3413 | { | |
3414 | MIPS_ELF_PUT_WORD (abfd, 1, | |
e641e783 | 3415 | sgot->contents + got_offset); |
0f20cc35 | 3416 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), |
e641e783 | 3417 | sgot->contents + got_offset2); |
0f20cc35 | 3418 | } |
e641e783 | 3419 | break; |
0f20cc35 | 3420 | |
e641e783 RS |
3421 | case GOT_TLS_IE: |
3422 | /* Initial Exec model. */ | |
0f20cc35 DJ |
3423 | if (need_relocs) |
3424 | { | |
3425 | if (indx == 0) | |
3426 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
e641e783 | 3427 | sgot->contents + got_offset); |
0f20cc35 DJ |
3428 | else |
3429 | MIPS_ELF_PUT_WORD (abfd, 0, | |
e641e783 | 3430 | sgot->contents + got_offset); |
0f20cc35 DJ |
3431 | |
3432 | mips_elf_output_dynamic_relocation | |
861fb55a | 3433 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3434 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
e641e783 | 3435 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3436 | } |
3437 | else | |
3438 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
e641e783 RS |
3439 | sgot->contents + got_offset); |
3440 | break; | |
0f20cc35 | 3441 | |
e641e783 | 3442 | case GOT_TLS_LDM: |
0f20cc35 DJ |
3443 | /* The initial offset is zero, and the LD offsets will include the |
3444 | bias by DTP_OFFSET. */ | |
3445 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3446 | sgot->contents + got_offset | |
3447 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3448 | ||
9143e72c | 3449 | if (!bfd_link_dll (info)) |
0f20cc35 DJ |
3450 | MIPS_ELF_PUT_WORD (abfd, 1, |
3451 | sgot->contents + got_offset); | |
3452 | else | |
3453 | mips_elf_output_dynamic_relocation | |
861fb55a | 3454 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3455 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3456 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
e641e783 RS |
3457 | break; |
3458 | ||
3459 | default: | |
3460 | abort (); | |
0f20cc35 DJ |
3461 | } |
3462 | ||
9ab066b4 | 3463 | entry->tls_initialized = TRUE; |
e641e783 | 3464 | } |
0f20cc35 | 3465 | |
0a44bf69 RS |
3466 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3467 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3468 | will be negative. */ | |
3469 | ||
3470 | static bfd_vma | |
3471 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3472 | struct elf_link_hash_entry *h) | |
3473 | { | |
1bbce132 | 3474 | bfd_vma got_address, got_value; |
0a44bf69 RS |
3475 | struct mips_elf_link_hash_table *htab; |
3476 | ||
3477 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3478 | BFD_ASSERT (htab != NULL); |
3479 | ||
1bbce132 MR |
3480 | BFD_ASSERT (h->plt.plist != NULL); |
3481 | BFD_ASSERT (h->plt.plist->gotplt_index != MINUS_ONE); | |
0a44bf69 RS |
3482 | |
3483 | /* Calculate the address of the associated .got.plt entry. */ | |
ce558b89 AM |
3484 | got_address = (htab->root.sgotplt->output_section->vma |
3485 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
3486 | + (h->plt.plist->gotplt_index |
3487 | * MIPS_ELF_GOT_SIZE (info->output_bfd))); | |
0a44bf69 RS |
3488 | |
3489 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3490 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3491 | + htab->root.hgot->root.u.def.section->output_offset | |
3492 | + htab->root.hgot->root.u.def.value); | |
3493 | ||
3494 | return got_address - got_value; | |
3495 | } | |
3496 | ||
5c18022e | 3497 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3498 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3499 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3500 | offset can be found. */ | |
b49e97c9 TS |
3501 | |
3502 | static bfd_vma | |
9719ad41 | 3503 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3504 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3505 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3506 | { |
a8028dd0 | 3507 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3508 | struct mips_got_entry *entry; |
b49e97c9 | 3509 | |
a8028dd0 | 3510 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3511 | BFD_ASSERT (htab != NULL); |
3512 | ||
a8028dd0 RS |
3513 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3514 | r_symndx, h, r_type); | |
0f20cc35 | 3515 | if (!entry) |
b15e6682 | 3516 | return MINUS_ONE; |
0f20cc35 | 3517 | |
e641e783 | 3518 | if (entry->tls_type) |
9ab066b4 RS |
3519 | mips_elf_initialize_tls_slots (abfd, info, entry, h, value); |
3520 | return entry->gotidx; | |
b49e97c9 TS |
3521 | } |
3522 | ||
13fbec83 | 3523 | /* Return the GOT index of global symbol H in the primary GOT. */ |
b49e97c9 TS |
3524 | |
3525 | static bfd_vma | |
13fbec83 RS |
3526 | mips_elf_primary_global_got_index (bfd *obfd, struct bfd_link_info *info, |
3527 | struct elf_link_hash_entry *h) | |
3528 | { | |
3529 | struct mips_elf_link_hash_table *htab; | |
3530 | long global_got_dynindx; | |
3531 | struct mips_got_info *g; | |
3532 | bfd_vma got_index; | |
3533 | ||
3534 | htab = mips_elf_hash_table (info); | |
3535 | BFD_ASSERT (htab != NULL); | |
3536 | ||
3537 | global_got_dynindx = 0; | |
3538 | if (htab->global_gotsym != NULL) | |
3539 | global_got_dynindx = htab->global_gotsym->dynindx; | |
3540 | ||
3541 | /* Once we determine the global GOT entry with the lowest dynamic | |
3542 | symbol table index, we must put all dynamic symbols with greater | |
3543 | indices into the primary GOT. That makes it easy to calculate the | |
3544 | GOT offset. */ | |
3545 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
3546 | g = mips_elf_bfd_got (obfd, FALSE); | |
3547 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) | |
3548 | * MIPS_ELF_GOT_SIZE (obfd)); | |
ce558b89 | 3549 | BFD_ASSERT (got_index < htab->root.sgot->size); |
13fbec83 RS |
3550 | |
3551 | return got_index; | |
3552 | } | |
3553 | ||
3554 | /* Return the GOT index for the global symbol indicated by H, which is | |
3555 | referenced by a relocation of type R_TYPE in IBFD. */ | |
3556 | ||
3557 | static bfd_vma | |
3558 | mips_elf_global_got_index (bfd *obfd, struct bfd_link_info *info, bfd *ibfd, | |
3559 | struct elf_link_hash_entry *h, int r_type) | |
b49e97c9 | 3560 | { |
a8028dd0 | 3561 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 RS |
3562 | struct mips_got_info *g; |
3563 | struct mips_got_entry lookup, *entry; | |
3564 | bfd_vma gotidx; | |
b49e97c9 | 3565 | |
a8028dd0 | 3566 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3567 | BFD_ASSERT (htab != NULL); |
3568 | ||
6c42ddb9 RS |
3569 | g = mips_elf_bfd_got (ibfd, FALSE); |
3570 | BFD_ASSERT (g); | |
f4416af6 | 3571 | |
6c42ddb9 RS |
3572 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3573 | if (!lookup.tls_type && g == mips_elf_bfd_got (obfd, FALSE)) | |
3574 | return mips_elf_primary_global_got_index (obfd, info, h); | |
f4416af6 | 3575 | |
6c42ddb9 RS |
3576 | lookup.abfd = ibfd; |
3577 | lookup.symndx = -1; | |
3578 | lookup.d.h = (struct mips_elf_link_hash_entry *) h; | |
3579 | entry = htab_find (g->got_entries, &lookup); | |
3580 | BFD_ASSERT (entry); | |
0f20cc35 | 3581 | |
6c42ddb9 | 3582 | gotidx = entry->gotidx; |
ce558b89 | 3583 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
f4416af6 | 3584 | |
6c42ddb9 | 3585 | if (lookup.tls_type) |
0f20cc35 | 3586 | { |
0f20cc35 DJ |
3587 | bfd_vma value = MINUS_ONE; |
3588 | ||
3589 | if ((h->root.type == bfd_link_hash_defined | |
3590 | || h->root.type == bfd_link_hash_defweak) | |
3591 | && h->root.u.def.section->output_section) | |
3592 | value = (h->root.u.def.value | |
3593 | + h->root.u.def.section->output_offset | |
3594 | + h->root.u.def.section->output_section->vma); | |
3595 | ||
9ab066b4 | 3596 | mips_elf_initialize_tls_slots (obfd, info, entry, lookup.d.h, value); |
0f20cc35 | 3597 | } |
6c42ddb9 | 3598 | return gotidx; |
b49e97c9 TS |
3599 | } |
3600 | ||
5c18022e RS |
3601 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3602 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3603 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3604 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3605 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3606 | |
3607 | static bfd_vma | |
9719ad41 | 3608 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3609 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3610 | { |
91d6fa6a | 3611 | bfd_vma page, got_index; |
b15e6682 | 3612 | struct mips_got_entry *entry; |
b49e97c9 | 3613 | |
0a44bf69 | 3614 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3615 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3616 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3617 | |
b15e6682 AO |
3618 | if (!entry) |
3619 | return MINUS_ONE; | |
143d77c5 | 3620 | |
91d6fa6a | 3621 | got_index = entry->gotidx; |
b49e97c9 TS |
3622 | |
3623 | if (offsetp) | |
f4416af6 | 3624 | *offsetp = value - entry->d.address; |
b49e97c9 | 3625 | |
91d6fa6a | 3626 | return got_index; |
b49e97c9 TS |
3627 | } |
3628 | ||
738e5348 | 3629 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3630 | EXTERNAL is true if the relocation was originally against a global |
3631 | symbol that binds locally. */ | |
b49e97c9 TS |
3632 | |
3633 | static bfd_vma | |
9719ad41 | 3634 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3635 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3636 | { |
b15e6682 | 3637 | struct mips_got_entry *entry; |
b49e97c9 | 3638 | |
0a44bf69 RS |
3639 | /* GOT16 relocations against local symbols are followed by a LO16 |
3640 | relocation; those against global symbols are not. Thus if the | |
3641 | symbol was originally local, the GOT16 relocation should load the | |
3642 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3643 | if (! external) |
0a44bf69 | 3644 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3645 | |
738e5348 RS |
3646 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3647 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3648 | same in all cases. */ | |
a8028dd0 RS |
3649 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3650 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3651 | if (entry) |
3652 | return entry->gotidx; | |
3653 | else | |
3654 | return MINUS_ONE; | |
b49e97c9 TS |
3655 | } |
3656 | ||
3657 | /* Returns the offset for the entry at the INDEXth position | |
3658 | in the GOT. */ | |
3659 | ||
3660 | static bfd_vma | |
a8028dd0 | 3661 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3662 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3663 | { |
a8028dd0 | 3664 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3665 | asection *sgot; |
3666 | bfd_vma gp; | |
3667 | ||
a8028dd0 | 3668 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3669 | BFD_ASSERT (htab != NULL); |
3670 | ||
ce558b89 | 3671 | sgot = htab->root.sgot; |
f4416af6 | 3672 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3673 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3674 | |
91d6fa6a | 3675 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3676 | } |
3677 | ||
0a44bf69 RS |
3678 | /* Create and return a local GOT entry for VALUE, which was calculated |
3679 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3680 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3681 | instead. */ | |
b49e97c9 | 3682 | |
b15e6682 | 3683 | static struct mips_got_entry * |
0a44bf69 | 3684 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3685 | bfd *ibfd, bfd_vma value, |
5c18022e | 3686 | unsigned long r_symndx, |
0f20cc35 DJ |
3687 | struct mips_elf_link_hash_entry *h, |
3688 | int r_type) | |
b49e97c9 | 3689 | { |
ebc53538 RS |
3690 | struct mips_got_entry lookup, *entry; |
3691 | void **loc; | |
f4416af6 | 3692 | struct mips_got_info *g; |
0a44bf69 | 3693 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 | 3694 | bfd_vma gotidx; |
0a44bf69 RS |
3695 | |
3696 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3697 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3698 | |
d7206569 | 3699 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
3700 | if (g == NULL) |
3701 | { | |
d7206569 | 3702 | g = mips_elf_bfd_got (abfd, FALSE); |
f4416af6 AO |
3703 | BFD_ASSERT (g != NULL); |
3704 | } | |
b15e6682 | 3705 | |
020d7251 RS |
3706 | /* This function shouldn't be called for symbols that live in the global |
3707 | area of the GOT. */ | |
3708 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 | 3709 | |
ebc53538 RS |
3710 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3711 | if (lookup.tls_type) | |
3712 | { | |
3713 | lookup.abfd = ibfd; | |
df58fc94 | 3714 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 3715 | { |
ebc53538 RS |
3716 | lookup.symndx = 0; |
3717 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3718 | } |
3719 | else if (h == NULL) | |
3720 | { | |
ebc53538 RS |
3721 | lookup.symndx = r_symndx; |
3722 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3723 | } |
3724 | else | |
ebc53538 RS |
3725 | { |
3726 | lookup.symndx = -1; | |
3727 | lookup.d.h = h; | |
3728 | } | |
0f20cc35 | 3729 | |
ebc53538 RS |
3730 | entry = (struct mips_got_entry *) htab_find (g->got_entries, &lookup); |
3731 | BFD_ASSERT (entry); | |
0f20cc35 | 3732 | |
6c42ddb9 | 3733 | gotidx = entry->gotidx; |
ce558b89 | 3734 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
6c42ddb9 | 3735 | |
ebc53538 | 3736 | return entry; |
0f20cc35 DJ |
3737 | } |
3738 | ||
ebc53538 RS |
3739 | lookup.abfd = NULL; |
3740 | lookup.symndx = -1; | |
3741 | lookup.d.address = value; | |
3742 | loc = htab_find_slot (g->got_entries, &lookup, INSERT); | |
3743 | if (!loc) | |
b15e6682 | 3744 | return NULL; |
143d77c5 | 3745 | |
ebc53538 RS |
3746 | entry = (struct mips_got_entry *) *loc; |
3747 | if (entry) | |
3748 | return entry; | |
b15e6682 | 3749 | |
cb22ccf4 | 3750 | if (g->assigned_low_gotno > g->assigned_high_gotno) |
b49e97c9 TS |
3751 | { |
3752 | /* We didn't allocate enough space in the GOT. */ | |
4eca0228 | 3753 | _bfd_error_handler |
b49e97c9 TS |
3754 | (_("not enough GOT space for local GOT entries")); |
3755 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3756 | return NULL; |
b49e97c9 TS |
3757 | } |
3758 | ||
ebc53538 RS |
3759 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); |
3760 | if (!entry) | |
3761 | return NULL; | |
3762 | ||
cb22ccf4 KCY |
3763 | if (got16_reloc_p (r_type) |
3764 | || call16_reloc_p (r_type) | |
3765 | || got_page_reloc_p (r_type) | |
3766 | || got_disp_reloc_p (r_type)) | |
3767 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_low_gotno++; | |
3768 | else | |
3769 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_high_gotno--; | |
3770 | ||
ebc53538 RS |
3771 | *entry = lookup; |
3772 | *loc = entry; | |
3773 | ||
ce558b89 | 3774 | MIPS_ELF_PUT_WORD (abfd, value, htab->root.sgot->contents + entry->gotidx); |
b15e6682 | 3775 | |
5c18022e | 3776 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3777 | if (htab->is_vxworks) |
3778 | { | |
3779 | Elf_Internal_Rela outrel; | |
5c18022e | 3780 | asection *s; |
91d6fa6a | 3781 | bfd_byte *rloc; |
0a44bf69 | 3782 | bfd_vma got_address; |
0a44bf69 RS |
3783 | |
3784 | s = mips_elf_rel_dyn_section (info, FALSE); | |
ce558b89 AM |
3785 | got_address = (htab->root.sgot->output_section->vma |
3786 | + htab->root.sgot->output_offset | |
ebc53538 | 3787 | + entry->gotidx); |
0a44bf69 | 3788 | |
91d6fa6a | 3789 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3790 | outrel.r_offset = got_address; |
5c18022e RS |
3791 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3792 | outrel.r_addend = value; | |
91d6fa6a | 3793 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3794 | } |
3795 | ||
ebc53538 | 3796 | return entry; |
b49e97c9 TS |
3797 | } |
3798 | ||
d4596a51 RS |
3799 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3800 | The number might be exact or a worst-case estimate, depending on how | |
3801 | much information is available to elf_backend_omit_section_dynsym at | |
3802 | the current linking stage. */ | |
3803 | ||
3804 | static bfd_size_type | |
3805 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3806 | { | |
3807 | bfd_size_type count; | |
3808 | ||
3809 | count = 0; | |
0e1862bb L |
3810 | if (bfd_link_pic (info) |
3811 | || elf_hash_table (info)->is_relocatable_executable) | |
d4596a51 RS |
3812 | { |
3813 | asection *p; | |
3814 | const struct elf_backend_data *bed; | |
3815 | ||
3816 | bed = get_elf_backend_data (output_bfd); | |
3817 | for (p = output_bfd->sections; p ; p = p->next) | |
3818 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3819 | && (p->flags & SEC_ALLOC) != 0 | |
7f923b7f | 3820 | && elf_hash_table (info)->dynamic_relocs |
d4596a51 RS |
3821 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) |
3822 | ++count; | |
3823 | } | |
3824 | return count; | |
3825 | } | |
3826 | ||
b49e97c9 | 3827 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3828 | appear towards the end. */ |
b49e97c9 | 3829 | |
b34976b6 | 3830 | static bfd_boolean |
d4596a51 | 3831 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3832 | { |
a8028dd0 | 3833 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3834 | struct mips_elf_hash_sort_data hsd; |
3835 | struct mips_got_info *g; | |
b49e97c9 | 3836 | |
a8028dd0 | 3837 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3838 | BFD_ASSERT (htab != NULL); |
3839 | ||
0f8c4b60 | 3840 | if (htab->root.dynsymcount == 0) |
17a80fa8 MR |
3841 | return TRUE; |
3842 | ||
a8028dd0 | 3843 | g = htab->got_info; |
d4596a51 RS |
3844 | if (g == NULL) |
3845 | return TRUE; | |
f4416af6 | 3846 | |
b49e97c9 | 3847 | hsd.low = NULL; |
23cc69b6 RS |
3848 | hsd.max_unref_got_dynindx |
3849 | = hsd.min_got_dynindx | |
0f8c4b60 | 3850 | = (htab->root.dynsymcount - g->reloc_only_gotno); |
e17b0c35 MR |
3851 | /* Add 1 to local symbol indices to account for the mandatory NULL entry |
3852 | at the head of the table; see `_bfd_elf_link_renumber_dynsyms'. */ | |
3853 | hsd.max_local_dynindx = count_section_dynsyms (abfd, info) + 1; | |
3854 | hsd.max_non_got_dynindx = htab->root.local_dynsymcount + 1; | |
0f8c4b60 | 3855 | mips_elf_link_hash_traverse (htab, mips_elf_sort_hash_table_f, &hsd); |
b49e97c9 TS |
3856 | |
3857 | /* There should have been enough room in the symbol table to | |
44c410de | 3858 | accommodate both the GOT and non-GOT symbols. */ |
e17b0c35 | 3859 | BFD_ASSERT (hsd.max_local_dynindx <= htab->root.local_dynsymcount + 1); |
b49e97c9 | 3860 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
55f8b9d2 | 3861 | BFD_ASSERT (hsd.max_unref_got_dynindx == htab->root.dynsymcount); |
0f8c4b60 | 3862 | BFD_ASSERT (htab->root.dynsymcount - hsd.min_got_dynindx == g->global_gotno); |
b49e97c9 TS |
3863 | |
3864 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3865 | table index in the GOT. */ | |
d222d210 | 3866 | htab->global_gotsym = hsd.low; |
b49e97c9 | 3867 | |
b34976b6 | 3868 | return TRUE; |
b49e97c9 TS |
3869 | } |
3870 | ||
3871 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3872 | index. Otherwise, assign it the lowest available dynamic | |
3873 | index. */ | |
3874 | ||
b34976b6 | 3875 | static bfd_boolean |
9719ad41 | 3876 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3877 | { |
9719ad41 | 3878 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3879 | |
b49e97c9 TS |
3880 | /* Symbols without dynamic symbol table entries aren't interesting |
3881 | at all. */ | |
3882 | if (h->root.dynindx == -1) | |
b34976b6 | 3883 | return TRUE; |
b49e97c9 | 3884 | |
634835ae | 3885 | switch (h->global_got_area) |
f4416af6 | 3886 | { |
634835ae | 3887 | case GGA_NONE: |
e17b0c35 MR |
3888 | if (h->root.forced_local) |
3889 | h->root.dynindx = hsd->max_local_dynindx++; | |
3890 | else | |
3891 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
634835ae | 3892 | break; |
0f20cc35 | 3893 | |
634835ae | 3894 | case GGA_NORMAL: |
b49e97c9 TS |
3895 | h->root.dynindx = --hsd->min_got_dynindx; |
3896 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3897 | break; |
3898 | ||
3899 | case GGA_RELOC_ONLY: | |
634835ae RS |
3900 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
3901 | hsd->low = (struct elf_link_hash_entry *) h; | |
3902 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3903 | break; | |
b49e97c9 TS |
3904 | } |
3905 | ||
b34976b6 | 3906 | return TRUE; |
b49e97c9 TS |
3907 | } |
3908 | ||
ee227692 RS |
3909 | /* Record that input bfd ABFD requires a GOT entry like *LOOKUP |
3910 | (which is owned by the caller and shouldn't be added to the | |
3911 | hash table directly). */ | |
3912 | ||
3913 | static bfd_boolean | |
3914 | mips_elf_record_got_entry (struct bfd_link_info *info, bfd *abfd, | |
3915 | struct mips_got_entry *lookup) | |
3916 | { | |
3917 | struct mips_elf_link_hash_table *htab; | |
3918 | struct mips_got_entry *entry; | |
3919 | struct mips_got_info *g; | |
3920 | void **loc, **bfd_loc; | |
3921 | ||
3922 | /* Make sure there's a slot for this entry in the master GOT. */ | |
3923 | htab = mips_elf_hash_table (info); | |
3924 | g = htab->got_info; | |
3925 | loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3926 | if (!loc) | |
3927 | return FALSE; | |
3928 | ||
3929 | /* Populate the entry if it isn't already. */ | |
3930 | entry = (struct mips_got_entry *) *loc; | |
3931 | if (!entry) | |
3932 | { | |
3933 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); | |
3934 | if (!entry) | |
3935 | return FALSE; | |
3936 | ||
9ab066b4 | 3937 | lookup->tls_initialized = FALSE; |
ee227692 RS |
3938 | lookup->gotidx = -1; |
3939 | *entry = *lookup; | |
3940 | *loc = entry; | |
3941 | } | |
3942 | ||
3943 | /* Reuse the same GOT entry for the BFD's GOT. */ | |
3944 | g = mips_elf_bfd_got (abfd, TRUE); | |
3945 | if (!g) | |
3946 | return FALSE; | |
3947 | ||
3948 | bfd_loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3949 | if (!bfd_loc) | |
3950 | return FALSE; | |
3951 | ||
3952 | if (!*bfd_loc) | |
3953 | *bfd_loc = entry; | |
3954 | return TRUE; | |
3955 | } | |
3956 | ||
e641e783 RS |
3957 | /* ABFD has a GOT relocation of type R_TYPE against H. Reserve a GOT |
3958 | entry for it. FOR_CALL is true if the caller is only interested in | |
6ccf4795 | 3959 | using the GOT entry for calls. */ |
b49e97c9 | 3960 | |
b34976b6 | 3961 | static bfd_boolean |
9719ad41 RS |
3962 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3963 | bfd *abfd, struct bfd_link_info *info, | |
e641e783 | 3964 | bfd_boolean for_call, int r_type) |
b49e97c9 | 3965 | { |
a8028dd0 | 3966 | struct mips_elf_link_hash_table *htab; |
634835ae | 3967 | struct mips_elf_link_hash_entry *hmips; |
ee227692 RS |
3968 | struct mips_got_entry entry; |
3969 | unsigned char tls_type; | |
a8028dd0 RS |
3970 | |
3971 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3972 | BFD_ASSERT (htab != NULL); |
3973 | ||
634835ae | 3974 | hmips = (struct mips_elf_link_hash_entry *) h; |
6ccf4795 RS |
3975 | if (!for_call) |
3976 | hmips->got_only_for_calls = FALSE; | |
f4416af6 | 3977 | |
b49e97c9 TS |
3978 | /* A global symbol in the GOT must also be in the dynamic symbol |
3979 | table. */ | |
7c5fcef7 L |
3980 | if (h->dynindx == -1) |
3981 | { | |
3982 | switch (ELF_ST_VISIBILITY (h->other)) | |
3983 | { | |
3984 | case STV_INTERNAL: | |
3985 | case STV_HIDDEN: | |
47275900 | 3986 | _bfd_mips_elf_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3987 | break; |
3988 | } | |
c152c796 | 3989 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3990 | return FALSE; |
7c5fcef7 | 3991 | } |
b49e97c9 | 3992 | |
ee227692 | 3993 | tls_type = mips_elf_reloc_tls_type (r_type); |
9ab066b4 | 3994 | if (tls_type == GOT_TLS_NONE && hmips->global_got_area > GGA_NORMAL) |
ee227692 | 3995 | hmips->global_got_area = GGA_NORMAL; |
86324f90 | 3996 | |
f4416af6 AO |
3997 | entry.abfd = abfd; |
3998 | entry.symndx = -1; | |
3999 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
ee227692 RS |
4000 | entry.tls_type = tls_type; |
4001 | return mips_elf_record_got_entry (info, abfd, &entry); | |
b49e97c9 | 4002 | } |
f4416af6 | 4003 | |
e641e783 RS |
4004 | /* ABFD has a GOT relocation of type R_TYPE against symbol SYMNDX + ADDEND, |
4005 | where SYMNDX is a local symbol. Reserve a GOT entry for it. */ | |
f4416af6 AO |
4006 | |
4007 | static bfd_boolean | |
9719ad41 | 4008 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
e641e783 | 4009 | struct bfd_link_info *info, int r_type) |
f4416af6 | 4010 | { |
a8028dd0 RS |
4011 | struct mips_elf_link_hash_table *htab; |
4012 | struct mips_got_info *g; | |
ee227692 | 4013 | struct mips_got_entry entry; |
f4416af6 | 4014 | |
a8028dd0 | 4015 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4016 | BFD_ASSERT (htab != NULL); |
4017 | ||
a8028dd0 RS |
4018 | g = htab->got_info; |
4019 | BFD_ASSERT (g != NULL); | |
4020 | ||
f4416af6 AO |
4021 | entry.abfd = abfd; |
4022 | entry.symndx = symndx; | |
4023 | entry.d.addend = addend; | |
e641e783 | 4024 | entry.tls_type = mips_elf_reloc_tls_type (r_type); |
ee227692 | 4025 | return mips_elf_record_got_entry (info, abfd, &entry); |
f4416af6 | 4026 | } |
c224138d | 4027 | |
13db6b44 RS |
4028 | /* Record that ABFD has a page relocation against SYMNDX + ADDEND. |
4029 | H is the symbol's hash table entry, or null if SYMNDX is local | |
4030 | to ABFD. */ | |
c224138d RS |
4031 | |
4032 | static bfd_boolean | |
13db6b44 RS |
4033 | mips_elf_record_got_page_ref (struct bfd_link_info *info, bfd *abfd, |
4034 | long symndx, struct elf_link_hash_entry *h, | |
4035 | bfd_signed_vma addend) | |
c224138d | 4036 | { |
a8028dd0 | 4037 | struct mips_elf_link_hash_table *htab; |
ee227692 | 4038 | struct mips_got_info *g1, *g2; |
13db6b44 | 4039 | struct mips_got_page_ref lookup, *entry; |
ee227692 | 4040 | void **loc, **bfd_loc; |
c224138d | 4041 | |
a8028dd0 | 4042 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4043 | BFD_ASSERT (htab != NULL); |
4044 | ||
ee227692 RS |
4045 | g1 = htab->got_info; |
4046 | BFD_ASSERT (g1 != NULL); | |
a8028dd0 | 4047 | |
13db6b44 RS |
4048 | if (h) |
4049 | { | |
4050 | lookup.symndx = -1; | |
4051 | lookup.u.h = (struct mips_elf_link_hash_entry *) h; | |
4052 | } | |
4053 | else | |
4054 | { | |
4055 | lookup.symndx = symndx; | |
4056 | lookup.u.abfd = abfd; | |
4057 | } | |
4058 | lookup.addend = addend; | |
4059 | loc = htab_find_slot (g1->got_page_refs, &lookup, INSERT); | |
c224138d RS |
4060 | if (loc == NULL) |
4061 | return FALSE; | |
4062 | ||
13db6b44 | 4063 | entry = (struct mips_got_page_ref *) *loc; |
c224138d RS |
4064 | if (!entry) |
4065 | { | |
4066 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
4067 | if (!entry) | |
4068 | return FALSE; | |
4069 | ||
13db6b44 | 4070 | *entry = lookup; |
c224138d RS |
4071 | *loc = entry; |
4072 | } | |
4073 | ||
ee227692 RS |
4074 | /* Add the same entry to the BFD's GOT. */ |
4075 | g2 = mips_elf_bfd_got (abfd, TRUE); | |
4076 | if (!g2) | |
4077 | return FALSE; | |
4078 | ||
13db6b44 | 4079 | bfd_loc = htab_find_slot (g2->got_page_refs, &lookup, INSERT); |
ee227692 RS |
4080 | if (!bfd_loc) |
4081 | return FALSE; | |
4082 | ||
4083 | if (!*bfd_loc) | |
4084 | *bfd_loc = entry; | |
4085 | ||
c224138d RS |
4086 | return TRUE; |
4087 | } | |
33bb52fb RS |
4088 | |
4089 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
4090 | ||
4091 | static void | |
4092 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
4093 | unsigned int n) | |
4094 | { | |
4095 | asection *s; | |
4096 | struct mips_elf_link_hash_table *htab; | |
4097 | ||
4098 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4099 | BFD_ASSERT (htab != NULL); |
4100 | ||
33bb52fb RS |
4101 | s = mips_elf_rel_dyn_section (info, FALSE); |
4102 | BFD_ASSERT (s != NULL); | |
4103 | ||
4104 | if (htab->is_vxworks) | |
4105 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
4106 | else | |
4107 | { | |
4108 | if (s->size == 0) | |
4109 | { | |
4110 | /* Make room for a null element. */ | |
4111 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
4112 | ++s->reloc_count; | |
4113 | } | |
4114 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
4115 | } | |
4116 | } | |
4117 | \f | |
476366af RS |
4118 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4119 | mips_elf_traverse_got_arg structure. Count the number of GOT | |
4120 | entries and TLS relocs. Set DATA->value to true if we need | |
4121 | to resolve indirect or warning symbols and then recreate the GOT. */ | |
33bb52fb RS |
4122 | |
4123 | static int | |
4124 | mips_elf_check_recreate_got (void **entryp, void *data) | |
4125 | { | |
4126 | struct mips_got_entry *entry; | |
476366af | 4127 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4128 | |
4129 | entry = (struct mips_got_entry *) *entryp; | |
476366af | 4130 | arg = (struct mips_elf_traverse_got_arg *) data; |
33bb52fb RS |
4131 | if (entry->abfd != NULL && entry->symndx == -1) |
4132 | { | |
4133 | struct mips_elf_link_hash_entry *h; | |
4134 | ||
4135 | h = entry->d.h; | |
4136 | if (h->root.root.type == bfd_link_hash_indirect | |
4137 | || h->root.root.type == bfd_link_hash_warning) | |
4138 | { | |
476366af | 4139 | arg->value = TRUE; |
33bb52fb RS |
4140 | return 0; |
4141 | } | |
4142 | } | |
476366af | 4143 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
33bb52fb RS |
4144 | return 1; |
4145 | } | |
4146 | ||
476366af RS |
4147 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4148 | mips_elf_traverse_got_arg structure. Add all entries to DATA->g, | |
4149 | converting entries for indirect and warning symbols into entries | |
4150 | for the target symbol. Set DATA->g to null on error. */ | |
33bb52fb RS |
4151 | |
4152 | static int | |
4153 | mips_elf_recreate_got (void **entryp, void *data) | |
4154 | { | |
72e7511a | 4155 | struct mips_got_entry new_entry, *entry; |
476366af | 4156 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4157 | void **slot; |
4158 | ||
33bb52fb | 4159 | entry = (struct mips_got_entry *) *entryp; |
476366af | 4160 | arg = (struct mips_elf_traverse_got_arg *) data; |
72e7511a RS |
4161 | if (entry->abfd != NULL |
4162 | && entry->symndx == -1 | |
4163 | && (entry->d.h->root.root.type == bfd_link_hash_indirect | |
4164 | || entry->d.h->root.root.type == bfd_link_hash_warning)) | |
33bb52fb RS |
4165 | { |
4166 | struct mips_elf_link_hash_entry *h; | |
4167 | ||
72e7511a RS |
4168 | new_entry = *entry; |
4169 | entry = &new_entry; | |
33bb52fb | 4170 | h = entry->d.h; |
72e7511a | 4171 | do |
634835ae RS |
4172 | { |
4173 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
4174 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4175 | } | |
72e7511a RS |
4176 | while (h->root.root.type == bfd_link_hash_indirect |
4177 | || h->root.root.type == bfd_link_hash_warning); | |
33bb52fb RS |
4178 | entry->d.h = h; |
4179 | } | |
476366af | 4180 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); |
33bb52fb RS |
4181 | if (slot == NULL) |
4182 | { | |
476366af | 4183 | arg->g = NULL; |
33bb52fb RS |
4184 | return 0; |
4185 | } | |
4186 | if (*slot == NULL) | |
72e7511a RS |
4187 | { |
4188 | if (entry == &new_entry) | |
4189 | { | |
4190 | entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4191 | if (!entry) | |
4192 | { | |
476366af | 4193 | arg->g = NULL; |
72e7511a RS |
4194 | return 0; |
4195 | } | |
4196 | *entry = new_entry; | |
4197 | } | |
4198 | *slot = entry; | |
476366af | 4199 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
72e7511a | 4200 | } |
33bb52fb RS |
4201 | return 1; |
4202 | } | |
4203 | ||
13db6b44 RS |
4204 | /* Return the maximum number of GOT page entries required for RANGE. */ |
4205 | ||
4206 | static bfd_vma | |
4207 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
4208 | { | |
4209 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
4210 | } | |
4211 | ||
4212 | /* Record that G requires a page entry that can reach SEC + ADDEND. */ | |
4213 | ||
4214 | static bfd_boolean | |
b75d42bc | 4215 | mips_elf_record_got_page_entry (struct mips_elf_traverse_got_arg *arg, |
13db6b44 RS |
4216 | asection *sec, bfd_signed_vma addend) |
4217 | { | |
b75d42bc | 4218 | struct mips_got_info *g = arg->g; |
13db6b44 RS |
4219 | struct mips_got_page_entry lookup, *entry; |
4220 | struct mips_got_page_range **range_ptr, *range; | |
4221 | bfd_vma old_pages, new_pages; | |
4222 | void **loc; | |
4223 | ||
4224 | /* Find the mips_got_page_entry hash table entry for this section. */ | |
4225 | lookup.sec = sec; | |
4226 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
4227 | if (loc == NULL) | |
4228 | return FALSE; | |
4229 | ||
4230 | /* Create a mips_got_page_entry if this is the first time we've | |
4231 | seen the section. */ | |
4232 | entry = (struct mips_got_page_entry *) *loc; | |
4233 | if (!entry) | |
4234 | { | |
b75d42bc | 4235 | entry = bfd_zalloc (arg->info->output_bfd, sizeof (*entry)); |
13db6b44 RS |
4236 | if (!entry) |
4237 | return FALSE; | |
4238 | ||
4239 | entry->sec = sec; | |
4240 | *loc = entry; | |
4241 | } | |
4242 | ||
4243 | /* Skip over ranges whose maximum extent cannot share a page entry | |
4244 | with ADDEND. */ | |
4245 | range_ptr = &entry->ranges; | |
4246 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
4247 | range_ptr = &(*range_ptr)->next; | |
4248 | ||
4249 | /* If we scanned to the end of the list, or found a range whose | |
4250 | minimum extent cannot share a page entry with ADDEND, create | |
4251 | a new singleton range. */ | |
4252 | range = *range_ptr; | |
4253 | if (!range || addend < range->min_addend - 0xffff) | |
4254 | { | |
b75d42bc | 4255 | range = bfd_zalloc (arg->info->output_bfd, sizeof (*range)); |
13db6b44 RS |
4256 | if (!range) |
4257 | return FALSE; | |
4258 | ||
4259 | range->next = *range_ptr; | |
4260 | range->min_addend = addend; | |
4261 | range->max_addend = addend; | |
4262 | ||
4263 | *range_ptr = range; | |
4264 | entry->num_pages++; | |
4265 | g->page_gotno++; | |
4266 | return TRUE; | |
4267 | } | |
4268 | ||
4269 | /* Remember how many pages the old range contributed. */ | |
4270 | old_pages = mips_elf_pages_for_range (range); | |
4271 | ||
4272 | /* Update the ranges. */ | |
4273 | if (addend < range->min_addend) | |
4274 | range->min_addend = addend; | |
4275 | else if (addend > range->max_addend) | |
4276 | { | |
4277 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
4278 | { | |
4279 | old_pages += mips_elf_pages_for_range (range->next); | |
4280 | range->max_addend = range->next->max_addend; | |
4281 | range->next = range->next->next; | |
4282 | } | |
4283 | else | |
4284 | range->max_addend = addend; | |
4285 | } | |
4286 | ||
4287 | /* Record any change in the total estimate. */ | |
4288 | new_pages = mips_elf_pages_for_range (range); | |
4289 | if (old_pages != new_pages) | |
4290 | { | |
4291 | entry->num_pages += new_pages - old_pages; | |
4292 | g->page_gotno += new_pages - old_pages; | |
4293 | } | |
4294 | ||
4295 | return TRUE; | |
4296 | } | |
4297 | ||
4298 | /* A htab_traverse callback for which *REFP points to a mips_got_page_ref | |
4299 | and for which DATA points to a mips_elf_traverse_got_arg. Work out | |
4300 | whether the page reference described by *REFP needs a GOT page entry, | |
4301 | and record that entry in DATA->g if so. Set DATA->g to null on failure. */ | |
4302 | ||
4303 | static bfd_boolean | |
4304 | mips_elf_resolve_got_page_ref (void **refp, void *data) | |
4305 | { | |
4306 | struct mips_got_page_ref *ref; | |
4307 | struct mips_elf_traverse_got_arg *arg; | |
4308 | struct mips_elf_link_hash_table *htab; | |
4309 | asection *sec; | |
4310 | bfd_vma addend; | |
4311 | ||
4312 | ref = (struct mips_got_page_ref *) *refp; | |
4313 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4314 | htab = mips_elf_hash_table (arg->info); | |
4315 | ||
4316 | if (ref->symndx < 0) | |
4317 | { | |
4318 | struct mips_elf_link_hash_entry *h; | |
4319 | ||
4320 | /* Global GOT_PAGEs decay to GOT_DISP and so don't need page entries. */ | |
4321 | h = ref->u.h; | |
4322 | if (!SYMBOL_REFERENCES_LOCAL (arg->info, &h->root)) | |
4323 | return 1; | |
4324 | ||
4325 | /* Ignore undefined symbols; we'll issue an error later if | |
4326 | appropriate. */ | |
4327 | if (!((h->root.root.type == bfd_link_hash_defined | |
4328 | || h->root.root.type == bfd_link_hash_defweak) | |
4329 | && h->root.root.u.def.section)) | |
4330 | return 1; | |
4331 | ||
4332 | sec = h->root.root.u.def.section; | |
4333 | addend = h->root.root.u.def.value + ref->addend; | |
4334 | } | |
4335 | else | |
4336 | { | |
4337 | Elf_Internal_Sym *isym; | |
4338 | ||
4339 | /* Read in the symbol. */ | |
4340 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ref->u.abfd, | |
4341 | ref->symndx); | |
4342 | if (isym == NULL) | |
4343 | { | |
4344 | arg->g = NULL; | |
4345 | return 0; | |
4346 | } | |
4347 | ||
4348 | /* Get the associated input section. */ | |
4349 | sec = bfd_section_from_elf_index (ref->u.abfd, isym->st_shndx); | |
4350 | if (sec == NULL) | |
4351 | { | |
4352 | arg->g = NULL; | |
4353 | return 0; | |
4354 | } | |
4355 | ||
4356 | /* If this is a mergable section, work out the section and offset | |
4357 | of the merged data. For section symbols, the addend specifies | |
4358 | of the offset _of_ the first byte in the data, otherwise it | |
4359 | specifies the offset _from_ the first byte. */ | |
4360 | if (sec->flags & SEC_MERGE) | |
4361 | { | |
4362 | void *secinfo; | |
4363 | ||
4364 | secinfo = elf_section_data (sec)->sec_info; | |
4365 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
4366 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4367 | isym->st_value + ref->addend); | |
4368 | else | |
4369 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4370 | isym->st_value) + ref->addend; | |
4371 | } | |
4372 | else | |
4373 | addend = isym->st_value + ref->addend; | |
4374 | } | |
b75d42bc | 4375 | if (!mips_elf_record_got_page_entry (arg, sec, addend)) |
13db6b44 RS |
4376 | { |
4377 | arg->g = NULL; | |
4378 | return 0; | |
4379 | } | |
4380 | return 1; | |
4381 | } | |
4382 | ||
33bb52fb | 4383 | /* If any entries in G->got_entries are for indirect or warning symbols, |
13db6b44 RS |
4384 | replace them with entries for the target symbol. Convert g->got_page_refs |
4385 | into got_page_entry structures and estimate the number of page entries | |
4386 | that they require. */ | |
33bb52fb RS |
4387 | |
4388 | static bfd_boolean | |
476366af RS |
4389 | mips_elf_resolve_final_got_entries (struct bfd_link_info *info, |
4390 | struct mips_got_info *g) | |
33bb52fb | 4391 | { |
476366af RS |
4392 | struct mips_elf_traverse_got_arg tga; |
4393 | struct mips_got_info oldg; | |
4394 | ||
4395 | oldg = *g; | |
33bb52fb | 4396 | |
476366af RS |
4397 | tga.info = info; |
4398 | tga.g = g; | |
4399 | tga.value = FALSE; | |
4400 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &tga); | |
4401 | if (tga.value) | |
33bb52fb | 4402 | { |
476366af RS |
4403 | *g = oldg; |
4404 | g->got_entries = htab_create (htab_size (oldg.got_entries), | |
4405 | mips_elf_got_entry_hash, | |
4406 | mips_elf_got_entry_eq, NULL); | |
4407 | if (!g->got_entries) | |
33bb52fb RS |
4408 | return FALSE; |
4409 | ||
476366af RS |
4410 | htab_traverse (oldg.got_entries, mips_elf_recreate_got, &tga); |
4411 | if (!tga.g) | |
4412 | return FALSE; | |
4413 | ||
4414 | htab_delete (oldg.got_entries); | |
33bb52fb | 4415 | } |
13db6b44 RS |
4416 | |
4417 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4418 | mips_got_page_entry_eq, NULL); | |
4419 | if (g->got_page_entries == NULL) | |
4420 | return FALSE; | |
4421 | ||
4422 | tga.info = info; | |
4423 | tga.g = g; | |
4424 | htab_traverse (g->got_page_refs, mips_elf_resolve_got_page_ref, &tga); | |
4425 | ||
33bb52fb RS |
4426 | return TRUE; |
4427 | } | |
4428 | ||
c5d6fa44 RS |
4429 | /* Return true if a GOT entry for H should live in the local rather than |
4430 | global GOT area. */ | |
4431 | ||
4432 | static bfd_boolean | |
4433 | mips_use_local_got_p (struct bfd_link_info *info, | |
4434 | struct mips_elf_link_hash_entry *h) | |
4435 | { | |
4436 | /* Symbols that aren't in the dynamic symbol table must live in the | |
4437 | local GOT. This includes symbols that are completely undefined | |
4438 | and which therefore don't bind locally. We'll report undefined | |
4439 | symbols later if appropriate. */ | |
4440 | if (h->root.dynindx == -1) | |
4441 | return TRUE; | |
4442 | ||
47275900 MR |
4443 | /* Absolute symbols, if ever they need a GOT entry, cannot ever go |
4444 | to the local GOT, as they would be implicitly relocated by the | |
4445 | base address by the dynamic loader. */ | |
4446 | if (bfd_is_abs_symbol (&h->root.root)) | |
4447 | return FALSE; | |
4448 | ||
c5d6fa44 RS |
4449 | /* Symbols that bind locally can (and in the case of forced-local |
4450 | symbols, must) live in the local GOT. */ | |
4451 | if (h->got_only_for_calls | |
4452 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4453 | : SYMBOL_REFERENCES_LOCAL (info, &h->root)) | |
4454 | return TRUE; | |
4455 | ||
4456 | /* If this is an executable that must provide a definition of the symbol, | |
4457 | either though PLTs or copy relocations, then that address should go in | |
4458 | the local rather than global GOT. */ | |
0e1862bb | 4459 | if (bfd_link_executable (info) && h->has_static_relocs) |
c5d6fa44 RS |
4460 | return TRUE; |
4461 | ||
4462 | return FALSE; | |
4463 | } | |
4464 | ||
6c42ddb9 RS |
4465 | /* A mips_elf_link_hash_traverse callback for which DATA points to the |
4466 | link_info structure. Decide whether the hash entry needs an entry in | |
4467 | the global part of the primary GOT, setting global_got_area accordingly. | |
4468 | Count the number of global symbols that are in the primary GOT only | |
4469 | because they have relocations against them (reloc_only_gotno). */ | |
33bb52fb RS |
4470 | |
4471 | static int | |
d4596a51 | 4472 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4473 | { |
020d7251 | 4474 | struct bfd_link_info *info; |
6ccf4795 | 4475 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4476 | struct mips_got_info *g; |
4477 | ||
020d7251 | 4478 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4479 | htab = mips_elf_hash_table (info); |
4480 | g = htab->got_info; | |
d4596a51 | 4481 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4482 | { |
020d7251 | 4483 | /* Make a final decision about whether the symbol belongs in the |
c5d6fa44 RS |
4484 | local or global GOT. */ |
4485 | if (mips_use_local_got_p (info, h)) | |
6c42ddb9 RS |
4486 | /* The symbol belongs in the local GOT. We no longer need this |
4487 | entry if it was only used for relocations; those relocations | |
4488 | will be against the null or section symbol instead of H. */ | |
4489 | h->global_got_area = GGA_NONE; | |
6ccf4795 RS |
4490 | else if (htab->is_vxworks |
4491 | && h->got_only_for_calls | |
1bbce132 | 4492 | && h->root.plt.plist->mips_offset != MINUS_ONE) |
6ccf4795 RS |
4493 | /* On VxWorks, calls can refer directly to the .got.plt entry; |
4494 | they don't need entries in the regular GOT. .got.plt entries | |
4495 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4496 | h->global_got_area = GGA_NONE; | |
6c42ddb9 | 4497 | else if (h->global_got_area == GGA_RELOC_ONLY) |
23cc69b6 | 4498 | { |
6c42ddb9 | 4499 | g->reloc_only_gotno++; |
23cc69b6 | 4500 | g->global_gotno++; |
23cc69b6 | 4501 | } |
33bb52fb RS |
4502 | } |
4503 | return 1; | |
4504 | } | |
f4416af6 | 4505 | \f |
d7206569 RS |
4506 | /* A htab_traverse callback for GOT entries. Add each one to the GOT |
4507 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
f4416af6 AO |
4508 | |
4509 | static int | |
d7206569 | 4510 | mips_elf_add_got_entry (void **entryp, void *data) |
f4416af6 | 4511 | { |
d7206569 RS |
4512 | struct mips_got_entry *entry; |
4513 | struct mips_elf_traverse_got_arg *arg; | |
4514 | void **slot; | |
f4416af6 | 4515 | |
d7206569 RS |
4516 | entry = (struct mips_got_entry *) *entryp; |
4517 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4518 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); | |
4519 | if (!slot) | |
f4416af6 | 4520 | { |
d7206569 RS |
4521 | arg->g = NULL; |
4522 | return 0; | |
f4416af6 | 4523 | } |
d7206569 | 4524 | if (!*slot) |
c224138d | 4525 | { |
d7206569 RS |
4526 | *slot = entry; |
4527 | mips_elf_count_got_entry (arg->info, arg->g, entry); | |
c224138d | 4528 | } |
f4416af6 AO |
4529 | return 1; |
4530 | } | |
4531 | ||
d7206569 RS |
4532 | /* A htab_traverse callback for GOT page entries. Add each one to the GOT |
4533 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
c224138d RS |
4534 | |
4535 | static int | |
d7206569 | 4536 | mips_elf_add_got_page_entry (void **entryp, void *data) |
c224138d | 4537 | { |
d7206569 RS |
4538 | struct mips_got_page_entry *entry; |
4539 | struct mips_elf_traverse_got_arg *arg; | |
4540 | void **slot; | |
c224138d | 4541 | |
d7206569 RS |
4542 | entry = (struct mips_got_page_entry *) *entryp; |
4543 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4544 | slot = htab_find_slot (arg->g->got_page_entries, entry, INSERT); | |
4545 | if (!slot) | |
c224138d | 4546 | { |
d7206569 | 4547 | arg->g = NULL; |
c224138d RS |
4548 | return 0; |
4549 | } | |
d7206569 RS |
4550 | if (!*slot) |
4551 | { | |
4552 | *slot = entry; | |
4553 | arg->g->page_gotno += entry->num_pages; | |
4554 | } | |
c224138d RS |
4555 | return 1; |
4556 | } | |
4557 | ||
d7206569 RS |
4558 | /* Consider merging FROM, which is ABFD's GOT, into TO. Return -1 if |
4559 | this would lead to overflow, 1 if they were merged successfully, | |
4560 | and 0 if a merge failed due to lack of memory. (These values are chosen | |
4561 | so that nonnegative return values can be returned by a htab_traverse | |
4562 | callback.) */ | |
c224138d RS |
4563 | |
4564 | static int | |
d7206569 | 4565 | mips_elf_merge_got_with (bfd *abfd, struct mips_got_info *from, |
c224138d RS |
4566 | struct mips_got_info *to, |
4567 | struct mips_elf_got_per_bfd_arg *arg) | |
4568 | { | |
d7206569 | 4569 | struct mips_elf_traverse_got_arg tga; |
c224138d RS |
4570 | unsigned int estimate; |
4571 | ||
4572 | /* Work out how many page entries we would need for the combined GOT. */ | |
4573 | estimate = arg->max_pages; | |
4574 | if (estimate >= from->page_gotno + to->page_gotno) | |
4575 | estimate = from->page_gotno + to->page_gotno; | |
4576 | ||
e2ece73c | 4577 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4578 | would be needed. */ |
e2ece73c RS |
4579 | estimate += from->local_gotno + to->local_gotno; |
4580 | estimate += from->tls_gotno + to->tls_gotno; | |
4581 | ||
17214937 RS |
4582 | /* If we're merging with the primary got, any TLS relocations will |
4583 | come after the full set of global entries. Otherwise estimate those | |
e2ece73c | 4584 | conservatively as well. */ |
17214937 | 4585 | if (to == arg->primary && from->tls_gotno + to->tls_gotno) |
e2ece73c RS |
4586 | estimate += arg->global_count; |
4587 | else | |
4588 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4589 | |
4590 | /* Bail out if the combined GOT might be too big. */ | |
4591 | if (estimate > arg->max_count) | |
4592 | return -1; | |
4593 | ||
c224138d | 4594 | /* Transfer the bfd's got information from FROM to TO. */ |
d7206569 RS |
4595 | tga.info = arg->info; |
4596 | tga.g = to; | |
4597 | htab_traverse (from->got_entries, mips_elf_add_got_entry, &tga); | |
4598 | if (!tga.g) | |
c224138d RS |
4599 | return 0; |
4600 | ||
d7206569 RS |
4601 | htab_traverse (from->got_page_entries, mips_elf_add_got_page_entry, &tga); |
4602 | if (!tga.g) | |
c224138d RS |
4603 | return 0; |
4604 | ||
d7206569 | 4605 | mips_elf_replace_bfd_got (abfd, to); |
c224138d RS |
4606 | return 1; |
4607 | } | |
4608 | ||
d7206569 | 4609 | /* Attempt to merge GOT G, which belongs to ABFD. Try to use as much |
f4416af6 AO |
4610 | as possible of the primary got, since it doesn't require explicit |
4611 | dynamic relocations, but don't use bfds that would reference global | |
4612 | symbols out of the addressable range. Failing the primary got, | |
4613 | attempt to merge with the current got, or finish the current got | |
4614 | and then make make the new got current. */ | |
4615 | ||
d7206569 RS |
4616 | static bfd_boolean |
4617 | mips_elf_merge_got (bfd *abfd, struct mips_got_info *g, | |
4618 | struct mips_elf_got_per_bfd_arg *arg) | |
f4416af6 | 4619 | { |
c224138d RS |
4620 | unsigned int estimate; |
4621 | int result; | |
4622 | ||
476366af | 4623 | if (!mips_elf_resolve_final_got_entries (arg->info, g)) |
d7206569 RS |
4624 | return FALSE; |
4625 | ||
c224138d RS |
4626 | /* Work out the number of page, local and TLS entries. */ |
4627 | estimate = arg->max_pages; | |
4628 | if (estimate > g->page_gotno) | |
4629 | estimate = g->page_gotno; | |
4630 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4631 | |
4632 | /* We place TLS GOT entries after both locals and globals. The globals | |
4633 | for the primary GOT may overflow the normal GOT size limit, so be | |
4634 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4635 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4636 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4637 | |
c224138d | 4638 | if (estimate <= arg->max_count) |
f4416af6 | 4639 | { |
c224138d RS |
4640 | /* If we don't have a primary GOT, use it as |
4641 | a starting point for the primary GOT. */ | |
4642 | if (!arg->primary) | |
4643 | { | |
d7206569 RS |
4644 | arg->primary = g; |
4645 | return TRUE; | |
c224138d | 4646 | } |
f4416af6 | 4647 | |
c224138d | 4648 | /* Try merging with the primary GOT. */ |
d7206569 | 4649 | result = mips_elf_merge_got_with (abfd, g, arg->primary, arg); |
c224138d RS |
4650 | if (result >= 0) |
4651 | return result; | |
f4416af6 | 4652 | } |
c224138d | 4653 | |
f4416af6 | 4654 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4655 | if (arg->current) |
f4416af6 | 4656 | { |
d7206569 | 4657 | result = mips_elf_merge_got_with (abfd, g, arg->current, arg); |
c224138d RS |
4658 | if (result >= 0) |
4659 | return result; | |
f4416af6 | 4660 | } |
c224138d | 4661 | |
f4416af6 AO |
4662 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4663 | fits; if it turns out that it doesn't, we'll get relocation | |
4664 | overflows anyway. */ | |
c224138d RS |
4665 | g->next = arg->current; |
4666 | arg->current = g; | |
0f20cc35 | 4667 | |
d7206569 | 4668 | return TRUE; |
0f20cc35 DJ |
4669 | } |
4670 | ||
72e7511a RS |
4671 | /* ENTRYP is a hash table entry for a mips_got_entry. Set its gotidx |
4672 | to GOTIDX, duplicating the entry if it has already been assigned | |
4673 | an index in a different GOT. */ | |
4674 | ||
4675 | static bfd_boolean | |
4676 | mips_elf_set_gotidx (void **entryp, long gotidx) | |
4677 | { | |
4678 | struct mips_got_entry *entry; | |
4679 | ||
4680 | entry = (struct mips_got_entry *) *entryp; | |
4681 | if (entry->gotidx > 0) | |
4682 | { | |
4683 | struct mips_got_entry *new_entry; | |
4684 | ||
4685 | new_entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4686 | if (!new_entry) | |
4687 | return FALSE; | |
4688 | ||
4689 | *new_entry = *entry; | |
4690 | *entryp = new_entry; | |
4691 | entry = new_entry; | |
4692 | } | |
4693 | entry->gotidx = gotidx; | |
4694 | return TRUE; | |
4695 | } | |
4696 | ||
4697 | /* Set the TLS GOT index for the GOT entry in ENTRYP. DATA points to a | |
4698 | mips_elf_traverse_got_arg in which DATA->value is the size of one | |
4699 | GOT entry. Set DATA->g to null on failure. */ | |
0f20cc35 DJ |
4700 | |
4701 | static int | |
72e7511a | 4702 | mips_elf_initialize_tls_index (void **entryp, void *data) |
0f20cc35 | 4703 | { |
72e7511a RS |
4704 | struct mips_got_entry *entry; |
4705 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 DJ |
4706 | |
4707 | /* We're only interested in TLS symbols. */ | |
72e7511a | 4708 | entry = (struct mips_got_entry *) *entryp; |
9ab066b4 | 4709 | if (entry->tls_type == GOT_TLS_NONE) |
0f20cc35 DJ |
4710 | return 1; |
4711 | ||
72e7511a | 4712 | arg = (struct mips_elf_traverse_got_arg *) data; |
6c42ddb9 | 4713 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->tls_assigned_gotno)) |
ead49a57 | 4714 | { |
6c42ddb9 RS |
4715 | arg->g = NULL; |
4716 | return 0; | |
f4416af6 AO |
4717 | } |
4718 | ||
ead49a57 | 4719 | /* Account for the entries we've just allocated. */ |
9ab066b4 | 4720 | arg->g->tls_assigned_gotno += mips_tls_got_entries (entry->tls_type); |
f4416af6 AO |
4721 | return 1; |
4722 | } | |
4723 | ||
ab361d49 RS |
4724 | /* A htab_traverse callback for GOT entries, where DATA points to a |
4725 | mips_elf_traverse_got_arg. Set the global_got_area of each global | |
4726 | symbol to DATA->value. */ | |
f4416af6 | 4727 | |
f4416af6 | 4728 | static int |
ab361d49 | 4729 | mips_elf_set_global_got_area (void **entryp, void *data) |
f4416af6 | 4730 | { |
ab361d49 RS |
4731 | struct mips_got_entry *entry; |
4732 | struct mips_elf_traverse_got_arg *arg; | |
f4416af6 | 4733 | |
ab361d49 RS |
4734 | entry = (struct mips_got_entry *) *entryp; |
4735 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4736 | if (entry->abfd != NULL | |
4737 | && entry->symndx == -1 | |
4738 | && entry->d.h->global_got_area != GGA_NONE) | |
4739 | entry->d.h->global_got_area = arg->value; | |
4740 | return 1; | |
4741 | } | |
4742 | ||
4743 | /* A htab_traverse callback for secondary GOT entries, where DATA points | |
4744 | to a mips_elf_traverse_got_arg. Assign GOT indices to global entries | |
4745 | and record the number of relocations they require. DATA->value is | |
72e7511a | 4746 | the size of one GOT entry. Set DATA->g to null on failure. */ |
ab361d49 RS |
4747 | |
4748 | static int | |
4749 | mips_elf_set_global_gotidx (void **entryp, void *data) | |
4750 | { | |
4751 | struct mips_got_entry *entry; | |
4752 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 | 4753 | |
ab361d49 RS |
4754 | entry = (struct mips_got_entry *) *entryp; |
4755 | arg = (struct mips_elf_traverse_got_arg *) data; | |
634835ae RS |
4756 | if (entry->abfd != NULL |
4757 | && entry->symndx == -1 | |
4758 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 | 4759 | { |
cb22ccf4 | 4760 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_low_gotno)) |
72e7511a RS |
4761 | { |
4762 | arg->g = NULL; | |
4763 | return 0; | |
4764 | } | |
cb22ccf4 | 4765 | arg->g->assigned_low_gotno += 1; |
72e7511a | 4766 | |
0e1862bb | 4767 | if (bfd_link_pic (arg->info) |
ab361d49 RS |
4768 | || (elf_hash_table (arg->info)->dynamic_sections_created |
4769 | && entry->d.h->root.def_dynamic | |
4770 | && !entry->d.h->root.def_regular)) | |
4771 | arg->g->relocs += 1; | |
f4416af6 AO |
4772 | } |
4773 | ||
4774 | return 1; | |
4775 | } | |
4776 | ||
33bb52fb RS |
4777 | /* A htab_traverse callback for GOT entries for which DATA is the |
4778 | bfd_link_info. Forbid any global symbols from having traditional | |
4779 | lazy-binding stubs. */ | |
4780 | ||
0626d451 | 4781 | static int |
33bb52fb | 4782 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4783 | { |
33bb52fb RS |
4784 | struct bfd_link_info *info; |
4785 | struct mips_elf_link_hash_table *htab; | |
4786 | struct mips_got_entry *entry; | |
0626d451 | 4787 | |
33bb52fb RS |
4788 | entry = (struct mips_got_entry *) *entryp; |
4789 | info = (struct bfd_link_info *) data; | |
4790 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4791 | BFD_ASSERT (htab != NULL); |
4792 | ||
0626d451 RS |
4793 | if (entry->abfd != NULL |
4794 | && entry->symndx == -1 | |
33bb52fb | 4795 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4796 | { |
33bb52fb RS |
4797 | entry->d.h->needs_lazy_stub = FALSE; |
4798 | htab->lazy_stub_count--; | |
f4416af6 | 4799 | } |
143d77c5 | 4800 | |
f4416af6 AO |
4801 | return 1; |
4802 | } | |
4803 | ||
f4416af6 AO |
4804 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4805 | the primary GOT. */ | |
4806 | static bfd_vma | |
9719ad41 | 4807 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 | 4808 | { |
d7206569 | 4809 | if (!g->next) |
f4416af6 AO |
4810 | return 0; |
4811 | ||
d7206569 | 4812 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
4813 | if (! g) |
4814 | return 0; | |
4815 | ||
4816 | BFD_ASSERT (g->next); | |
4817 | ||
4818 | g = g->next; | |
143d77c5 | 4819 | |
0f20cc35 DJ |
4820 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4821 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4822 | } |
4823 | ||
4824 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4825 | a sequence of GOTs, each one 16-bit addressable. */ | |
4826 | ||
4827 | static bfd_boolean | |
9719ad41 | 4828 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4829 | asection *got, bfd_size_type pages) |
f4416af6 | 4830 | { |
a8028dd0 | 4831 | struct mips_elf_link_hash_table *htab; |
f4416af6 | 4832 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
ab361d49 | 4833 | struct mips_elf_traverse_got_arg tga; |
a8028dd0 | 4834 | struct mips_got_info *g, *gg; |
33bb52fb | 4835 | unsigned int assign, needed_relocs; |
d7206569 | 4836 | bfd *dynobj, *ibfd; |
f4416af6 | 4837 | |
33bb52fb | 4838 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4839 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4840 | BFD_ASSERT (htab != NULL); |
4841 | ||
a8028dd0 | 4842 | g = htab->got_info; |
f4416af6 | 4843 | |
f4416af6 AO |
4844 | got_per_bfd_arg.obfd = abfd; |
4845 | got_per_bfd_arg.info = info; | |
f4416af6 AO |
4846 | got_per_bfd_arg.current = NULL; |
4847 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4848 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4849 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4850 | - htab->reserved_gotno); |
c224138d | 4851 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 | 4852 | /* The number of globals that will be included in the primary GOT. |
ab361d49 | 4853 | See the calls to mips_elf_set_global_got_area below for more |
0f20cc35 DJ |
4854 | information. */ |
4855 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4856 | |
4857 | /* Try to merge the GOTs of input bfds together, as long as they | |
4858 | don't seem to exceed the maximum GOT size, choosing one of them | |
4859 | to be the primary GOT. */ | |
c72f2fb2 | 4860 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
d7206569 RS |
4861 | { |
4862 | gg = mips_elf_bfd_got (ibfd, FALSE); | |
4863 | if (gg && !mips_elf_merge_got (ibfd, gg, &got_per_bfd_arg)) | |
4864 | return FALSE; | |
4865 | } | |
f4416af6 | 4866 | |
0f20cc35 | 4867 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 | 4868 | if (got_per_bfd_arg.primary == NULL) |
3dff0dd1 | 4869 | g->next = mips_elf_create_got_info (abfd); |
f4416af6 AO |
4870 | else |
4871 | g->next = got_per_bfd_arg.primary; | |
4872 | g->next->next = got_per_bfd_arg.current; | |
4873 | ||
4874 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4875 | gg = g; | |
4876 | g = g->next; | |
4877 | ||
4878 | /* Map the output bfd to the primary got. That's what we're going | |
4879 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4880 | didn't mark in check_relocs, and we want a quick way to find it. | |
4881 | We can't just use gg->next because we're going to reverse the | |
4882 | list. */ | |
d7206569 | 4883 | mips_elf_replace_bfd_got (abfd, g); |
f4416af6 | 4884 | |
634835ae RS |
4885 | /* Every symbol that is referenced in a dynamic relocation must be |
4886 | present in the primary GOT, so arrange for them to appear after | |
4887 | those that are actually referenced. */ | |
23cc69b6 | 4888 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4889 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4890 | |
ab361d49 RS |
4891 | tga.info = info; |
4892 | tga.value = GGA_RELOC_ONLY; | |
4893 | htab_traverse (gg->got_entries, mips_elf_set_global_got_area, &tga); | |
4894 | tga.value = GGA_NORMAL; | |
4895 | htab_traverse (g->got_entries, mips_elf_set_global_got_area, &tga); | |
f4416af6 AO |
4896 | |
4897 | /* Now go through the GOTs assigning them offset ranges. | |
cb22ccf4 | 4898 | [assigned_low_gotno, local_gotno[ will be set to the range of local |
f4416af6 AO |
4899 | entries in each GOT. We can then compute the end of a GOT by |
4900 | adding local_gotno to global_gotno. We reverse the list and make | |
4901 | it circular since then we'll be able to quickly compute the | |
4902 | beginning of a GOT, by computing the end of its predecessor. To | |
4903 | avoid special cases for the primary GOT, while still preserving | |
4904 | assertions that are valid for both single- and multi-got links, | |
4905 | we arrange for the main got struct to have the right number of | |
4906 | global entries, but set its local_gotno such that the initial | |
4907 | offset of the primary GOT is zero. Remember that the primary GOT | |
4908 | will become the last item in the circular linked list, so it | |
4909 | points back to the master GOT. */ | |
4910 | gg->local_gotno = -g->global_gotno; | |
4911 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4912 | gg->tls_gotno = 0; |
f4416af6 AO |
4913 | assign = 0; |
4914 | gg->next = gg; | |
4915 | ||
4916 | do | |
4917 | { | |
4918 | struct mips_got_info *gn; | |
4919 | ||
861fb55a | 4920 | assign += htab->reserved_gotno; |
cb22ccf4 | 4921 | g->assigned_low_gotno = assign; |
c224138d RS |
4922 | g->local_gotno += assign; |
4923 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
cb22ccf4 | 4924 | g->assigned_high_gotno = g->local_gotno - 1; |
0f20cc35 DJ |
4925 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4926 | ||
ead49a57 RS |
4927 | /* Take g out of the direct list, and push it onto the reversed |
4928 | list that gg points to. g->next is guaranteed to be nonnull after | |
4929 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4930 | gn = g->next; | |
4931 | g->next = gg->next; | |
4932 | gg->next = g; | |
4933 | ||
0f20cc35 DJ |
4934 | /* Set up any TLS entries. We always place the TLS entries after |
4935 | all non-TLS entries. */ | |
4936 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
72e7511a RS |
4937 | tga.g = g; |
4938 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4939 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
4940 | if (!tga.g) | |
4941 | return FALSE; | |
1fd20d70 | 4942 | BFD_ASSERT (g->tls_assigned_gotno == assign); |
f4416af6 | 4943 | |
ead49a57 | 4944 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4945 | g = gn; |
0626d451 | 4946 | |
33bb52fb RS |
4947 | /* Forbid global symbols in every non-primary GOT from having |
4948 | lazy-binding stubs. */ | |
0626d451 | 4949 | if (g) |
33bb52fb | 4950 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4951 | } |
4952 | while (g); | |
4953 | ||
59b08994 | 4954 | got->size = assign * MIPS_ELF_GOT_SIZE (abfd); |
33bb52fb RS |
4955 | |
4956 | needed_relocs = 0; | |
33bb52fb RS |
4957 | for (g = gg->next; g && g->next != gg; g = g->next) |
4958 | { | |
4959 | unsigned int save_assign; | |
4960 | ||
ab361d49 RS |
4961 | /* Assign offsets to global GOT entries and count how many |
4962 | relocations they need. */ | |
cb22ccf4 KCY |
4963 | save_assign = g->assigned_low_gotno; |
4964 | g->assigned_low_gotno = g->local_gotno; | |
ab361d49 RS |
4965 | tga.info = info; |
4966 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4967 | tga.g = g; | |
4968 | htab_traverse (g->got_entries, mips_elf_set_global_gotidx, &tga); | |
72e7511a RS |
4969 | if (!tga.g) |
4970 | return FALSE; | |
cb22ccf4 KCY |
4971 | BFD_ASSERT (g->assigned_low_gotno == g->local_gotno + g->global_gotno); |
4972 | g->assigned_low_gotno = save_assign; | |
72e7511a | 4973 | |
0e1862bb | 4974 | if (bfd_link_pic (info)) |
33bb52fb | 4975 | { |
cb22ccf4 KCY |
4976 | g->relocs += g->local_gotno - g->assigned_low_gotno; |
4977 | BFD_ASSERT (g->assigned_low_gotno == g->next->local_gotno | |
33bb52fb RS |
4978 | + g->next->global_gotno |
4979 | + g->next->tls_gotno | |
861fb55a | 4980 | + htab->reserved_gotno); |
33bb52fb | 4981 | } |
ab361d49 | 4982 | needed_relocs += g->relocs; |
33bb52fb | 4983 | } |
ab361d49 | 4984 | needed_relocs += g->relocs; |
33bb52fb RS |
4985 | |
4986 | if (needed_relocs) | |
4987 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4988 | needed_relocs); | |
143d77c5 | 4989 | |
f4416af6 AO |
4990 | return TRUE; |
4991 | } | |
143d77c5 | 4992 | |
b49e97c9 TS |
4993 | \f |
4994 | /* Returns the first relocation of type r_type found, beginning with | |
4995 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4996 | ||
4997 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4998 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4999 | const Elf_Internal_Rela *relocation, | |
5000 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 5001 | { |
c000e262 TS |
5002 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
5003 | ||
b49e97c9 TS |
5004 | while (relocation < relend) |
5005 | { | |
c000e262 TS |
5006 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
5007 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
5008 | return relocation; |
5009 | ||
5010 | ++relocation; | |
5011 | } | |
5012 | ||
5013 | /* We didn't find it. */ | |
b49e97c9 TS |
5014 | return NULL; |
5015 | } | |
5016 | ||
020d7251 | 5017 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 5018 | |
b34976b6 | 5019 | static bfd_boolean |
9719ad41 RS |
5020 | mips_elf_local_relocation_p (bfd *input_bfd, |
5021 | const Elf_Internal_Rela *relocation, | |
020d7251 | 5022 | asection **local_sections) |
b49e97c9 TS |
5023 | { |
5024 | unsigned long r_symndx; | |
5025 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
5026 | size_t extsymoff; |
5027 | ||
5028 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5029 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5030 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
5031 | ||
5032 | if (r_symndx < extsymoff) | |
b34976b6 | 5033 | return TRUE; |
b49e97c9 | 5034 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 5035 | return TRUE; |
b49e97c9 | 5036 | |
b34976b6 | 5037 | return FALSE; |
b49e97c9 TS |
5038 | } |
5039 | \f | |
5040 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
5041 | ||
a7ebbfdf | 5042 | bfd_vma |
9719ad41 | 5043 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
5044 | { |
5045 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
5046 | /* VALUE is negative. */ | |
5047 | value |= ((bfd_vma) - 1) << bits; | |
5048 | ||
5049 | return value; | |
5050 | } | |
5051 | ||
5052 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 5053 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
5054 | BITS. */ |
5055 | ||
b34976b6 | 5056 | static bfd_boolean |
9719ad41 | 5057 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
5058 | { |
5059 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
5060 | ||
5061 | if (svalue > (1 << (bits - 1)) - 1) | |
5062 | /* The value is too big. */ | |
b34976b6 | 5063 | return TRUE; |
b49e97c9 TS |
5064 | else if (svalue < -(1 << (bits - 1))) |
5065 | /* The value is too small. */ | |
b34976b6 | 5066 | return TRUE; |
b49e97c9 TS |
5067 | |
5068 | /* All is well. */ | |
b34976b6 | 5069 | return FALSE; |
b49e97c9 TS |
5070 | } |
5071 | ||
5072 | /* Calculate the %high function. */ | |
5073 | ||
5074 | static bfd_vma | |
9719ad41 | 5075 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
5076 | { |
5077 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
5078 | } | |
5079 | ||
5080 | /* Calculate the %higher function. */ | |
5081 | ||
5082 | static bfd_vma | |
9719ad41 | 5083 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5084 | { |
5085 | #ifdef BFD64 | |
5086 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
5087 | #else | |
5088 | abort (); | |
c5ae1840 | 5089 | return MINUS_ONE; |
b49e97c9 TS |
5090 | #endif |
5091 | } | |
5092 | ||
5093 | /* Calculate the %highest function. */ | |
5094 | ||
5095 | static bfd_vma | |
9719ad41 | 5096 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5097 | { |
5098 | #ifdef BFD64 | |
b15e6682 | 5099 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
5100 | #else |
5101 | abort (); | |
c5ae1840 | 5102 | return MINUS_ONE; |
b49e97c9 TS |
5103 | #endif |
5104 | } | |
5105 | \f | |
5106 | /* Create the .compact_rel section. */ | |
5107 | ||
b34976b6 | 5108 | static bfd_boolean |
9719ad41 RS |
5109 | mips_elf_create_compact_rel_section |
5110 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
5111 | { |
5112 | flagword flags; | |
5113 | register asection *s; | |
5114 | ||
3d4d4302 | 5115 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
5116 | { |
5117 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
5118 | | SEC_READONLY); | |
5119 | ||
3d4d4302 | 5120 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 5121 | if (s == NULL |
b49e97c9 TS |
5122 | || ! bfd_set_section_alignment (abfd, s, |
5123 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 5124 | return FALSE; |
b49e97c9 | 5125 | |
eea6121a | 5126 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
5127 | } |
5128 | ||
b34976b6 | 5129 | return TRUE; |
b49e97c9 TS |
5130 | } |
5131 | ||
5132 | /* Create the .got section to hold the global offset table. */ | |
5133 | ||
b34976b6 | 5134 | static bfd_boolean |
23cc69b6 | 5135 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
5136 | { |
5137 | flagword flags; | |
5138 | register asection *s; | |
5139 | struct elf_link_hash_entry *h; | |
14a793b2 | 5140 | struct bfd_link_hash_entry *bh; |
0a44bf69 RS |
5141 | struct mips_elf_link_hash_table *htab; |
5142 | ||
5143 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5144 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5145 | |
5146 | /* This function may be called more than once. */ | |
ce558b89 | 5147 | if (htab->root.sgot) |
23cc69b6 | 5148 | return TRUE; |
b49e97c9 TS |
5149 | |
5150 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5151 | | SEC_LINKER_CREATED); | |
5152 | ||
72b4917c TS |
5153 | /* We have to use an alignment of 2**4 here because this is hardcoded |
5154 | in the function stub generation and in the linker script. */ | |
87e0a731 | 5155 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 5156 | if (s == NULL |
72b4917c | 5157 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 5158 | return FALSE; |
ce558b89 | 5159 | htab->root.sgot = s; |
b49e97c9 TS |
5160 | |
5161 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5162 | linker script because we don't want to define the symbol if we | |
5163 | are not creating a global offset table. */ | |
14a793b2 | 5164 | bh = NULL; |
b49e97c9 TS |
5165 | if (! (_bfd_generic_link_add_one_symbol |
5166 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 5167 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 5168 | return FALSE; |
14a793b2 AM |
5169 | |
5170 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
5171 | h->non_elf = 0; |
5172 | h->def_regular = 1; | |
b49e97c9 | 5173 | h->type = STT_OBJECT; |
2f9efdfc | 5174 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; |
d329bcd1 | 5175 | elf_hash_table (info)->hgot = h; |
b49e97c9 | 5176 | |
0e1862bb | 5177 | if (bfd_link_pic (info) |
c152c796 | 5178 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 5179 | return FALSE; |
b49e97c9 | 5180 | |
3dff0dd1 | 5181 | htab->got_info = mips_elf_create_got_info (abfd); |
f0abc2a1 | 5182 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
5183 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
5184 | ||
861fb55a | 5185 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
5186 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
5187 | SEC_ALLOC | SEC_LOAD | |
5188 | | SEC_HAS_CONTENTS | |
5189 | | SEC_IN_MEMORY | |
5190 | | SEC_LINKER_CREATED); | |
861fb55a DJ |
5191 | if (s == NULL) |
5192 | return FALSE; | |
ce558b89 | 5193 | htab->root.sgotplt = s; |
0a44bf69 | 5194 | |
b34976b6 | 5195 | return TRUE; |
b49e97c9 | 5196 | } |
b49e97c9 | 5197 | \f |
0a44bf69 RS |
5198 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
5199 | __GOTT_INDEX__ symbols. These symbols are only special for | |
5200 | shared objects; they are not used in executables. */ | |
5201 | ||
5202 | static bfd_boolean | |
5203 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
5204 | { | |
5205 | return (mips_elf_hash_table (info)->is_vxworks | |
0e1862bb | 5206 | && bfd_link_pic (info) |
0a44bf69 RS |
5207 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 |
5208 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
5209 | } | |
861fb55a DJ |
5210 | |
5211 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
5212 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
5213 | which determines whether the destination function ever requires a | |
5214 | stub. */ | |
5215 | ||
5216 | static bfd_boolean | |
8f0c309a CLT |
5217 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
5218 | bfd_boolean target_is_16_bit_code_p) | |
861fb55a DJ |
5219 | { |
5220 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
5221 | where the onus is on the compiler or programmer to perform any | |
5222 | necessary initialization of $25. Sometimes such initialization | |
5223 | is unnecessary; for example, -mno-shared functions do not use | |
5224 | the incoming value of $25, and may therefore be called directly. */ | |
5225 | if (PIC_OBJECT_P (input_bfd)) | |
5226 | return FALSE; | |
5227 | ||
5228 | switch (r_type) | |
5229 | { | |
5230 | case R_MIPS_26: | |
5231 | case R_MIPS_PC16: | |
7361da2c AB |
5232 | case R_MIPS_PC21_S2: |
5233 | case R_MIPS_PC26_S2: | |
df58fc94 RS |
5234 | case R_MICROMIPS_26_S1: |
5235 | case R_MICROMIPS_PC7_S1: | |
5236 | case R_MICROMIPS_PC10_S1: | |
5237 | case R_MICROMIPS_PC16_S1: | |
5238 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
5239 | return TRUE; |
5240 | ||
8f0c309a CLT |
5241 | case R_MIPS16_26: |
5242 | return !target_is_16_bit_code_p; | |
5243 | ||
861fb55a DJ |
5244 | default: |
5245 | return FALSE; | |
5246 | } | |
5247 | } | |
0a44bf69 | 5248 | \f |
47275900 MR |
5249 | /* Obtain the field relocated by RELOCATION. */ |
5250 | ||
5251 | static bfd_vma | |
5252 | mips_elf_obtain_contents (reloc_howto_type *howto, | |
5253 | const Elf_Internal_Rela *relocation, | |
5254 | bfd *input_bfd, bfd_byte *contents) | |
5255 | { | |
5256 | bfd_vma x = 0; | |
5257 | bfd_byte *location = contents + relocation->r_offset; | |
5258 | unsigned int size = bfd_get_reloc_size (howto); | |
5259 | ||
5260 | /* Obtain the bytes. */ | |
5261 | if (size != 0) | |
5262 | x = bfd_get (8 * size, input_bfd, location); | |
5263 | ||
5264 | return x; | |
5265 | } | |
5266 | ||
98e10ffa MR |
5267 | /* Store the field relocated by RELOCATION. */ |
5268 | ||
5269 | static void | |
5270 | mips_elf_store_contents (reloc_howto_type *howto, | |
5271 | const Elf_Internal_Rela *relocation, | |
5272 | bfd *input_bfd, bfd_byte *contents, bfd_vma x) | |
5273 | { | |
5274 | bfd_byte *location = contents + relocation->r_offset; | |
5275 | unsigned int size = bfd_get_reloc_size (howto); | |
5276 | ||
5277 | /* Put the value into the output. */ | |
5278 | if (size != 0) | |
5279 | bfd_put (8 * size, input_bfd, x, location); | |
5280 | } | |
5281 | ||
47275900 MR |
5282 | /* Try to patch a load from GOT instruction in CONTENTS pointed to by |
5283 | RELOCATION described by HOWTO, with a move of 0 to the load target | |
5284 | register, returning TRUE if that is successful and FALSE otherwise. | |
5285 | If DOIT is FALSE, then only determine it patching is possible and | |
5286 | return status without actually changing CONTENTS. | |
5287 | */ | |
5288 | ||
5289 | static bfd_boolean | |
5290 | mips_elf_nullify_got_load (bfd *input_bfd, bfd_byte *contents, | |
5291 | const Elf_Internal_Rela *relocation, | |
5292 | reloc_howto_type *howto, bfd_boolean doit) | |
5293 | { | |
5294 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5295 | bfd_byte *location = contents + relocation->r_offset; | |
5296 | bfd_boolean nullified = TRUE; | |
5297 | bfd_vma x; | |
5298 | ||
5299 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); | |
5300 | ||
5301 | /* Obtain the current value. */ | |
5302 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5303 | ||
5304 | /* Note that in the unshuffled MIPS16 encoding RX is at bits [21:19] | |
5305 | while RY is at bits [18:16] of the combined 32-bit instruction word. */ | |
5306 | if (mips16_reloc_p (r_type) | |
5307 | && (((x >> 22) & 0x3ff) == 0x3d3 /* LW */ | |
5308 | || ((x >> 22) & 0x3ff) == 0x3c7)) /* LD */ | |
5309 | x = (0x3cd << 22) | (x & (7 << 16)) << 3; /* LI */ | |
5310 | else if (micromips_reloc_p (r_type) | |
5311 | && ((x >> 26) & 0x37) == 0x37) /* LW/LD */ | |
5312 | x = (0xc << 26) | (x & (0x1f << 21)); /* ADDIU */ | |
5313 | else if (((x >> 26) & 0x3f) == 0x23 /* LW */ | |
5314 | || ((x >> 26) & 0x3f) == 0x37) /* LD */ | |
5315 | x = (0x9 << 26) | (x & (0x1f << 16)); /* ADDIU */ | |
5316 | else | |
5317 | nullified = FALSE; | |
5318 | ||
5319 | /* Put the value into the output. */ | |
5320 | if (doit && nullified) | |
5321 | mips_elf_store_contents (howto, relocation, input_bfd, contents, x); | |
5322 | ||
5323 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, FALSE, location); | |
5324 | ||
5325 | return nullified; | |
5326 | } | |
5327 | ||
b49e97c9 TS |
5328 | /* Calculate the value produced by the RELOCATION (which comes from |
5329 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5330 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5331 | ||
5332 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 5333 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 5334 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
5335 | |
5336 | This function returns bfd_reloc_continue if the caller need take no | |
5337 | further action regarding this relocation, bfd_reloc_notsupported if | |
5338 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5339 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5340 | ||
5341 | static bfd_reloc_status_type | |
9719ad41 | 5342 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
47275900 | 5343 | asection *input_section, bfd_byte *contents, |
9719ad41 RS |
5344 | struct bfd_link_info *info, |
5345 | const Elf_Internal_Rela *relocation, | |
5346 | bfd_vma addend, reloc_howto_type *howto, | |
5347 | Elf_Internal_Sym *local_syms, | |
5348 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
5349 | const char **namep, |
5350 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 5351 | bfd_boolean save_addend) |
b49e97c9 TS |
5352 | { |
5353 | /* The eventual value we will return. */ | |
5354 | bfd_vma value; | |
5355 | /* The address of the symbol against which the relocation is | |
5356 | occurring. */ | |
5357 | bfd_vma symbol = 0; | |
5358 | /* The final GP value to be used for the relocatable, executable, or | |
5359 | shared object file being produced. */ | |
0a61c8c2 | 5360 | bfd_vma gp; |
b49e97c9 TS |
5361 | /* The place (section offset or address) of the storage unit being |
5362 | relocated. */ | |
5363 | bfd_vma p; | |
5364 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 5365 | bfd_vma gp0; |
b49e97c9 TS |
5366 | /* The offset into the global offset table at which the address of |
5367 | the relocation entry symbol, adjusted by the addend, resides | |
5368 | during execution. */ | |
5369 | bfd_vma g = MINUS_ONE; | |
5370 | /* The section in which the symbol referenced by the relocation is | |
5371 | located. */ | |
5372 | asection *sec = NULL; | |
5373 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5374 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5375 | symbol. */ |
b34976b6 | 5376 | bfd_boolean local_p, was_local_p; |
77434823 MR |
5377 | /* TRUE if the symbol referred to by this relocation is a section |
5378 | symbol. */ | |
5379 | bfd_boolean section_p = FALSE; | |
b34976b6 AM |
5380 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ |
5381 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
5382 | /* TRUE if the symbol referred to by this relocation is |
5383 | "__gnu_local_gp". */ | |
5384 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
5385 | Elf_Internal_Shdr *symtab_hdr; |
5386 | size_t extsymoff; | |
5387 | unsigned long r_symndx; | |
5388 | int r_type; | |
b34976b6 | 5389 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5390 | relocation value. */ |
b34976b6 AM |
5391 | bfd_boolean overflowed_p; |
5392 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
5393 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
df58fc94 | 5394 | bfd_boolean target_is_micromips_code_p = FALSE; |
0a44bf69 RS |
5395 | struct mips_elf_link_hash_table *htab; |
5396 | bfd *dynobj; | |
ad951203 | 5397 | bfd_boolean resolved_to_zero; |
0a44bf69 RS |
5398 | |
5399 | dynobj = elf_hash_table (info)->dynobj; | |
5400 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5401 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5402 | |
5403 | /* Parse the relocation. */ | |
5404 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5405 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5406 | p = (input_section->output_section->vma | |
5407 | + input_section->output_offset | |
5408 | + relocation->r_offset); | |
5409 | ||
5410 | /* Assume that there will be no overflow. */ | |
b34976b6 | 5411 | overflowed_p = FALSE; |
b49e97c9 TS |
5412 | |
5413 | /* Figure out whether or not the symbol is local, and get the offset | |
5414 | used in the array of hash table entries. */ | |
5415 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5416 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5417 | local_sections); |
bce03d3d | 5418 | was_local_p = local_p; |
b49e97c9 TS |
5419 | if (! elf_bad_symtab (input_bfd)) |
5420 | extsymoff = symtab_hdr->sh_info; | |
5421 | else | |
5422 | { | |
5423 | /* The symbol table does not follow the rule that local symbols | |
5424 | must come before globals. */ | |
5425 | extsymoff = 0; | |
5426 | } | |
5427 | ||
5428 | /* Figure out the value of the symbol. */ | |
5429 | if (local_p) | |
5430 | { | |
9d862524 | 5431 | bfd_boolean micromips_p = MICROMIPS_P (abfd); |
b49e97c9 TS |
5432 | Elf_Internal_Sym *sym; |
5433 | ||
5434 | sym = local_syms + r_symndx; | |
5435 | sec = local_sections[r_symndx]; | |
5436 | ||
77434823 MR |
5437 | section_p = ELF_ST_TYPE (sym->st_info) == STT_SECTION; |
5438 | ||
b49e97c9 | 5439 | symbol = sec->output_section->vma + sec->output_offset; |
77434823 | 5440 | if (!section_p || (sec->flags & SEC_MERGE)) |
b49e97c9 | 5441 | symbol += sym->st_value; |
77434823 | 5442 | if ((sec->flags & SEC_MERGE) && section_p) |
d4df96e6 L |
5443 | { |
5444 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5445 | addend -= symbol; | |
5446 | addend += sec->output_section->vma + sec->output_offset; | |
5447 | } | |
b49e97c9 | 5448 | |
df58fc94 RS |
5449 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5450 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5451 | ++symbol; |
5452 | ||
5453 | /* Record the name of this symbol, for our caller. */ | |
5454 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5455 | symtab_hdr->sh_link, | |
5456 | sym->st_name); | |
ceab86af | 5457 | if (*namep == NULL || **namep == '\0') |
b49e97c9 TS |
5458 | *namep = bfd_section_name (input_bfd, sec); |
5459 | ||
9d862524 | 5460 | /* For relocations against a section symbol and ones against no |
07d6d2b8 | 5461 | symbol (absolute relocations) infer the ISA mode from the addend. */ |
9d862524 MR |
5462 | if (section_p || r_symndx == STN_UNDEF) |
5463 | { | |
5464 | target_is_16_bit_code_p = (addend & 1) && !micromips_p; | |
5465 | target_is_micromips_code_p = (addend & 1) && micromips_p; | |
5466 | } | |
5467 | /* For relocations against an absolute symbol infer the ISA mode | |
07d6d2b8 | 5468 | from the value of the symbol plus addend. */ |
9d862524 MR |
5469 | else if (bfd_is_abs_section (sec)) |
5470 | { | |
5471 | target_is_16_bit_code_p = ((symbol + addend) & 1) && !micromips_p; | |
5472 | target_is_micromips_code_p = ((symbol + addend) & 1) && micromips_p; | |
5473 | } | |
5474 | /* Otherwise just use the regular symbol annotation available. */ | |
5475 | else | |
5476 | { | |
5477 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); | |
5478 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); | |
5479 | } | |
b49e97c9 TS |
5480 | } |
5481 | else | |
5482 | { | |
560e09e9 NC |
5483 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5484 | ||
b49e97c9 TS |
5485 | /* For global symbols we look up the symbol in the hash-table. */ |
5486 | h = ((struct mips_elf_link_hash_entry *) | |
5487 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5488 | /* Find the real hash-table entry for this symbol. */ | |
5489 | while (h->root.root.type == bfd_link_hash_indirect | |
5490 | || h->root.root.type == bfd_link_hash_warning) | |
5491 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5492 | ||
5493 | /* Record the name of this symbol, for our caller. */ | |
5494 | *namep = h->root.root.root.string; | |
5495 | ||
5496 | /* See if this is the special _gp_disp symbol. Note that such a | |
5497 | symbol must always be a global symbol. */ | |
560e09e9 | 5498 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5499 | && ! NEWABI_P (input_bfd)) |
5500 | { | |
5501 | /* Relocations against _gp_disp are permitted only with | |
5502 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5503 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5504 | return bfd_reloc_notsupported; |
5505 | ||
b34976b6 | 5506 | gp_disp_p = TRUE; |
b49e97c9 | 5507 | } |
bbe506e8 TS |
5508 | /* See if this is the special _gp symbol. Note that such a |
5509 | symbol must always be a global symbol. */ | |
5510 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
5511 | gnu_local_gp_p = TRUE; | |
5512 | ||
5513 | ||
b49e97c9 TS |
5514 | /* If this symbol is defined, calculate its address. Note that |
5515 | _gp_disp is a magic symbol, always implicitly defined by the | |
5516 | linker, so it's inappropriate to check to see whether or not | |
5517 | its defined. */ | |
5518 | else if ((h->root.root.type == bfd_link_hash_defined | |
5519 | || h->root.root.type == bfd_link_hash_defweak) | |
5520 | && h->root.root.u.def.section) | |
5521 | { | |
5522 | sec = h->root.root.u.def.section; | |
5523 | if (sec->output_section) | |
5524 | symbol = (h->root.root.u.def.value | |
5525 | + sec->output_section->vma | |
5526 | + sec->output_offset); | |
5527 | else | |
5528 | symbol = h->root.root.u.def.value; | |
5529 | } | |
5530 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5531 | /* We allow relocations against undefined weak symbols, giving | |
5532 | it the value zero, so that you can undefined weak functions | |
5533 | and check to see if they exist by looking at their | |
5534 | addresses. */ | |
5535 | symbol = 0; | |
59c2e50f | 5536 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5537 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5538 | symbol = 0; | |
a4d0f181 TS |
5539 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5540 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5541 | { |
5542 | /* If this is a dynamic link, we should have created a | |
5543 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
de194d85 | 5544 | in _bfd_mips_elf_create_dynamic_sections. |
b49e97c9 TS |
5545 | Otherwise, we should define the symbol with a value of 0. |
5546 | FIXME: It should probably get into the symbol table | |
5547 | somehow as well. */ | |
0e1862bb | 5548 | BFD_ASSERT (! bfd_link_pic (info)); |
b49e97c9 TS |
5549 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); |
5550 | symbol = 0; | |
5551 | } | |
5e2b0d47 NC |
5552 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5553 | { | |
5554 | /* This is an optional symbol - an Irix specific extension to the | |
5555 | ELF spec. Ignore it for now. | |
5556 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5557 | than simply ignoring them, but we do not handle this for now. | |
5558 | For information see the "64-bit ELF Object File Specification" | |
5559 | which is available from here: | |
5560 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5561 | symbol = 0; | |
5562 | } | |
b49e97c9 TS |
5563 | else |
5564 | { | |
dfb93f11 JC |
5565 | bfd_boolean reject_undefined |
5566 | = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR | |
5567 | || ELF_ST_VISIBILITY (h->root.other) != STV_DEFAULT); | |
5568 | ||
1a72702b AM |
5569 | (*info->callbacks->undefined_symbol) |
5570 | (info, h->root.root.root.string, input_bfd, | |
dfb93f11 JC |
5571 | input_section, relocation->r_offset, reject_undefined); |
5572 | ||
5573 | if (reject_undefined) | |
5574 | return bfd_reloc_undefined; | |
5575 | ||
5576 | symbol = 0; | |
b49e97c9 TS |
5577 | } |
5578 | ||
30c09090 | 5579 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
1bbce132 | 5580 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (h->root.other); |
b49e97c9 TS |
5581 | } |
5582 | ||
738e5348 RS |
5583 | /* If this is a reference to a 16-bit function with a stub, we need |
5584 | to redirect the relocation to the stub unless: | |
5585 | ||
5586 | (a) the relocation is for a MIPS16 JAL; | |
5587 | ||
5588 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5589 | non-MIPS16 uses of the GOT slot; or | |
5590 | ||
5591 | (c) the section allows direct references to MIPS16 functions. */ | |
5592 | if (r_type != R_MIPS16_26 | |
0e1862bb | 5593 | && !bfd_link_relocatable (info) |
738e5348 RS |
5594 | && ((h != NULL |
5595 | && h->fn_stub != NULL | |
5596 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 | 5597 | || (local_p |
698600e4 AM |
5598 | && mips_elf_tdata (input_bfd)->local_stubs != NULL |
5599 | && mips_elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
738e5348 | 5600 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5601 | { |
5602 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5603 | have already noticed that we were going to need the | |
5604 | stub. */ | |
5605 | if (local_p) | |
8f0c309a | 5606 | { |
698600e4 | 5607 | sec = mips_elf_tdata (input_bfd)->local_stubs[r_symndx]; |
8f0c309a CLT |
5608 | value = 0; |
5609 | } | |
b49e97c9 TS |
5610 | else |
5611 | { | |
5612 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5613 | if (h->la25_stub) |
5614 | { | |
5615 | /* If a LA25 header for the stub itself exists, point to the | |
5616 | prepended LUI/ADDIU sequence. */ | |
5617 | sec = h->la25_stub->stub_section; | |
5618 | value = h->la25_stub->offset; | |
5619 | } | |
5620 | else | |
5621 | { | |
5622 | sec = h->fn_stub; | |
5623 | value = 0; | |
5624 | } | |
b49e97c9 TS |
5625 | } |
5626 | ||
8f0c309a | 5627 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 TS |
5628 | /* The target is 16-bit, but the stub isn't. */ |
5629 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 | 5630 | } |
1bbce132 MR |
5631 | /* If this is a MIPS16 call with a stub, that is made through the PLT or |
5632 | to a standard MIPS function, we need to redirect the call to the stub. | |
5633 | Note that we specifically exclude R_MIPS16_CALL16 from this behavior; | |
5634 | indirect calls should use an indirect stub instead. */ | |
0e1862bb | 5635 | else if (r_type == R_MIPS16_26 && !bfd_link_relocatable (info) |
b314ec0e | 5636 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 | 5637 | || (local_p |
698600e4 AM |
5638 | && mips_elf_tdata (input_bfd)->local_call_stubs != NULL |
5639 | && mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
1bbce132 | 5640 | && ((h != NULL && h->use_plt_entry) || !target_is_16_bit_code_p)) |
b49e97c9 | 5641 | { |
b9d58d71 | 5642 | if (local_p) |
698600e4 | 5643 | sec = mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx]; |
b9d58d71 | 5644 | else |
b49e97c9 | 5645 | { |
b9d58d71 TS |
5646 | /* If both call_stub and call_fp_stub are defined, we can figure |
5647 | out which one to use by checking which one appears in the input | |
5648 | file. */ | |
5649 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5650 | { |
b9d58d71 | 5651 | asection *o; |
68ffbac6 | 5652 | |
b9d58d71 TS |
5653 | sec = NULL; |
5654 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5655 | { |
b9d58d71 TS |
5656 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5657 | { | |
5658 | sec = h->call_fp_stub; | |
5659 | break; | |
5660 | } | |
b49e97c9 | 5661 | } |
b9d58d71 TS |
5662 | if (sec == NULL) |
5663 | sec = h->call_stub; | |
b49e97c9 | 5664 | } |
b9d58d71 | 5665 | else if (h->call_stub != NULL) |
b49e97c9 | 5666 | sec = h->call_stub; |
b9d58d71 TS |
5667 | else |
5668 | sec = h->call_fp_stub; | |
07d6d2b8 | 5669 | } |
b49e97c9 | 5670 | |
eea6121a | 5671 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5672 | symbol = sec->output_section->vma + sec->output_offset; |
5673 | } | |
861fb55a DJ |
5674 | /* If this is a direct call to a PIC function, redirect to the |
5675 | non-PIC stub. */ | |
5676 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5677 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5678 | target_is_16_bit_code_p)) | |
c7318def MR |
5679 | { |
5680 | symbol = (h->la25_stub->stub_section->output_section->vma | |
5681 | + h->la25_stub->stub_section->output_offset | |
5682 | + h->la25_stub->offset); | |
5683 | if (ELF_ST_IS_MICROMIPS (h->root.other)) | |
5684 | symbol |= 1; | |
5685 | } | |
1bbce132 MR |
5686 | /* For direct MIPS16 and microMIPS calls make sure the compressed PLT |
5687 | entry is used if a standard PLT entry has also been made. In this | |
5688 | case the symbol will have been set by mips_elf_set_plt_sym_value | |
5689 | to point to the standard PLT entry, so redirect to the compressed | |
5690 | one. */ | |
54806ffa MR |
5691 | else if ((mips16_branch_reloc_p (r_type) |
5692 | || micromips_branch_reloc_p (r_type)) | |
0e1862bb | 5693 | && !bfd_link_relocatable (info) |
1bbce132 MR |
5694 | && h != NULL |
5695 | && h->use_plt_entry | |
5696 | && h->root.plt.plist->comp_offset != MINUS_ONE | |
5697 | && h->root.plt.plist->mips_offset != MINUS_ONE) | |
5698 | { | |
5699 | bfd_boolean micromips_p = MICROMIPS_P (abfd); | |
5700 | ||
ce558b89 | 5701 | sec = htab->root.splt; |
1bbce132 MR |
5702 | symbol = (sec->output_section->vma |
5703 | + sec->output_offset | |
5704 | + htab->plt_header_size | |
5705 | + htab->plt_mips_offset | |
5706 | + h->root.plt.plist->comp_offset | |
5707 | + 1); | |
5708 | ||
5709 | target_is_16_bit_code_p = !micromips_p; | |
5710 | target_is_micromips_code_p = micromips_p; | |
5711 | } | |
b49e97c9 | 5712 | |
df58fc94 | 5713 | /* Make sure MIPS16 and microMIPS are not used together. */ |
c9775dde | 5714 | if ((mips16_branch_reloc_p (r_type) && target_is_micromips_code_p) |
df58fc94 RS |
5715 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) |
5716 | { | |
4eca0228 | 5717 | _bfd_error_handler |
df58fc94 RS |
5718 | (_("MIPS16 and microMIPS functions cannot call each other")); |
5719 | return bfd_reloc_notsupported; | |
5720 | } | |
5721 | ||
b49e97c9 | 5722 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5723 | mode change. However, we can ignore calls to undefined weak symbols, |
5724 | which should never be executed at runtime. This exception is important | |
5725 | because the assembly writer may have "known" that any definition of the | |
5726 | symbol would be 16-bit code, and that direct jumps were therefore | |
5727 | acceptable. */ | |
0e1862bb | 5728 | *cross_mode_jump_p = (!bfd_link_relocatable (info) |
df58fc94 | 5729 | && !(h && h->root.root.type == bfd_link_hash_undefweak) |
9d862524 MR |
5730 | && ((mips16_branch_reloc_p (r_type) |
5731 | && !target_is_16_bit_code_p) | |
5732 | || (micromips_branch_reloc_p (r_type) | |
df58fc94 | 5733 | && !target_is_micromips_code_p) |
9d862524 MR |
5734 | || ((branch_reloc_p (r_type) |
5735 | || r_type == R_MIPS_JALR) | |
df58fc94 RS |
5736 | && (target_is_16_bit_code_p |
5737 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5738 | |
47275900 MR |
5739 | resolved_to_zero = (h != NULL |
5740 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->root)); | |
5741 | ||
5742 | switch (r_type) | |
5743 | { | |
5744 | case R_MIPS16_CALL16: | |
5745 | case R_MIPS16_GOT16: | |
5746 | case R_MIPS_CALL16: | |
5747 | case R_MIPS_GOT16: | |
5748 | case R_MIPS_GOT_PAGE: | |
5749 | case R_MIPS_GOT_DISP: | |
5750 | case R_MIPS_GOT_LO16: | |
5751 | case R_MIPS_CALL_LO16: | |
5752 | case R_MICROMIPS_CALL16: | |
5753 | case R_MICROMIPS_GOT16: | |
5754 | case R_MICROMIPS_GOT_PAGE: | |
5755 | case R_MICROMIPS_GOT_DISP: | |
5756 | case R_MICROMIPS_GOT_LO16: | |
5757 | case R_MICROMIPS_CALL_LO16: | |
5758 | if (resolved_to_zero | |
5759 | && !bfd_link_relocatable (info) | |
5760 | && mips_elf_nullify_got_load (input_bfd, contents, | |
5761 | relocation, howto, TRUE)) | |
5762 | return bfd_reloc_continue; | |
5763 | ||
5764 | /* Fall through. */ | |
5765 | case R_MIPS_GOT_HI16: | |
5766 | case R_MIPS_CALL_HI16: | |
5767 | case R_MICROMIPS_GOT_HI16: | |
5768 | case R_MICROMIPS_CALL_HI16: | |
5769 | if (resolved_to_zero | |
5770 | && htab->use_absolute_zero | |
5771 | && bfd_link_pic (info)) | |
5772 | { | |
5773 | /* Redirect to the special `__gnu_absolute_zero' symbol. */ | |
5774 | h = mips_elf_link_hash_lookup (htab, "__gnu_absolute_zero", | |
5775 | FALSE, FALSE, FALSE); | |
5776 | BFD_ASSERT (h != NULL); | |
5777 | } | |
5778 | break; | |
5779 | } | |
5780 | ||
c5d6fa44 | 5781 | local_p = (h == NULL || mips_use_local_got_p (info, h)); |
b49e97c9 | 5782 | |
0a61c8c2 RS |
5783 | gp0 = _bfd_get_gp_value (input_bfd); |
5784 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5785 | if (htab->got_info) |
a8028dd0 | 5786 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5787 | |
5788 | if (gnu_local_gp_p) | |
5789 | symbol = gp; | |
5790 | ||
df58fc94 RS |
5791 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5792 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5793 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5794 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5795 | { |
df58fc94 RS |
5796 | r_type = (micromips_reloc_p (r_type) |
5797 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5798 | addend = 0; |
5799 | } | |
5800 | ||
e77760d2 | 5801 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5802 | to need it, get it now. */ |
b49e97c9 TS |
5803 | switch (r_type) |
5804 | { | |
738e5348 RS |
5805 | case R_MIPS16_CALL16: |
5806 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5807 | case R_MIPS_CALL16: |
5808 | case R_MIPS_GOT16: | |
5809 | case R_MIPS_GOT_DISP: | |
5810 | case R_MIPS_GOT_HI16: | |
5811 | case R_MIPS_CALL_HI16: | |
5812 | case R_MIPS_GOT_LO16: | |
5813 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5814 | case R_MICROMIPS_CALL16: |
5815 | case R_MICROMIPS_GOT16: | |
5816 | case R_MICROMIPS_GOT_DISP: | |
5817 | case R_MICROMIPS_GOT_HI16: | |
5818 | case R_MICROMIPS_CALL_HI16: | |
5819 | case R_MICROMIPS_GOT_LO16: | |
5820 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5821 | case R_MIPS_TLS_GD: |
5822 | case R_MIPS_TLS_GOTTPREL: | |
5823 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5824 | case R_MIPS16_TLS_GD: |
5825 | case R_MIPS16_TLS_GOTTPREL: | |
5826 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5827 | case R_MICROMIPS_TLS_GD: |
5828 | case R_MICROMIPS_TLS_GOTTPREL: | |
5829 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5830 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5831 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5832 | { |
0a44bf69 | 5833 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5834 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5835 | if (g == MINUS_ONE) |
5836 | return bfd_reloc_outofrange; | |
5837 | } | |
5838 | else if (!local_p) | |
b49e97c9 | 5839 | { |
0a44bf69 RS |
5840 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5841 | entry, which is initialized to point at the PLT stub. */ | |
5842 | if (htab->is_vxworks | |
df58fc94 RS |
5843 | && (call_hi16_reloc_p (r_type) |
5844 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5845 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5846 | { |
5847 | BFD_ASSERT (addend == 0); | |
5848 | BFD_ASSERT (h->root.needs_plt); | |
5849 | g = mips_elf_gotplt_index (info, &h->root); | |
5850 | } | |
5851 | else | |
b49e97c9 | 5852 | { |
020d7251 | 5853 | BFD_ASSERT (addend == 0); |
13fbec83 RS |
5854 | g = mips_elf_global_got_index (abfd, info, input_bfd, |
5855 | &h->root, r_type); | |
e641e783 | 5856 | if (!TLS_RELOC_P (r_type) |
020d7251 RS |
5857 | && !elf_hash_table (info)->dynamic_sections_created) |
5858 | /* This is a static link. We must initialize the GOT entry. */ | |
ce558b89 | 5859 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->root.sgot->contents + g); |
b49e97c9 TS |
5860 | } |
5861 | } | |
0a44bf69 | 5862 | else if (!htab->is_vxworks |
738e5348 | 5863 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5864 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5865 | break; |
5866 | else | |
5867 | { | |
5c18022e | 5868 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5869 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5870 | if (g == MINUS_ONE) |
5871 | return bfd_reloc_outofrange; | |
5872 | } | |
5873 | ||
5874 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5875 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5876 | break; |
b49e97c9 TS |
5877 | } |
5878 | ||
0a44bf69 RS |
5879 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5880 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5881 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5882 | { | |
5883 | Elf_Internal_Rela outrel; | |
5884 | bfd_byte *loc; | |
5885 | asection *s; | |
5886 | ||
5887 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5888 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5889 | ||
5890 | outrel.r_offset = (input_section->output_section->vma | |
5891 | + input_section->output_offset | |
5892 | + relocation->r_offset); | |
5893 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5894 | outrel.r_addend = addend; | |
5895 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5896 | |
5897 | /* If we've written this relocation for a readonly section, | |
5898 | we need to set DF_TEXTREL again, so that we do not delete the | |
5899 | DT_TEXTREL tag. */ | |
5900 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5901 | info->flags |= DF_TEXTREL; | |
5902 | ||
0a44bf69 RS |
5903 | *valuep = 0; |
5904 | return bfd_reloc_ok; | |
5905 | } | |
5906 | ||
b49e97c9 TS |
5907 | /* Figure out what kind of relocation is being performed. */ |
5908 | switch (r_type) | |
5909 | { | |
5910 | case R_MIPS_NONE: | |
5911 | return bfd_reloc_continue; | |
5912 | ||
5913 | case R_MIPS_16: | |
c3eb94b4 MF |
5914 | if (howto->partial_inplace) |
5915 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
5916 | value = symbol + addend; | |
b49e97c9 TS |
5917 | overflowed_p = mips_elf_overflow_p (value, 16); |
5918 | break; | |
5919 | ||
5920 | case R_MIPS_32: | |
5921 | case R_MIPS_REL32: | |
5922 | case R_MIPS_64: | |
0e1862bb | 5923 | if ((bfd_link_pic (info) |
861fb55a | 5924 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5925 | && h != NULL |
f5385ebf | 5926 | && h->root.def_dynamic |
861fb55a DJ |
5927 | && !h->root.def_regular |
5928 | && !h->has_static_relocs)) | |
cf35638d | 5929 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
5930 | && (h == NULL |
5931 | || h->root.root.type != bfd_link_hash_undefweak | |
ad951203 L |
5932 | || (ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT |
5933 | && !resolved_to_zero)) | |
b49e97c9 TS |
5934 | && (input_section->flags & SEC_ALLOC) != 0) |
5935 | { | |
861fb55a | 5936 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5937 | where the symbol will end up. So, we create a relocation |
5938 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5939 | linker. We must do the same for executable references to |
5940 | shared library symbols, unless we've decided to use copy | |
5941 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5942 | value = addend; |
5943 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5944 | info, | |
5945 | relocation, | |
5946 | h, | |
5947 | sec, | |
5948 | symbol, | |
5949 | &value, | |
5950 | input_section)) | |
5951 | return bfd_reloc_undefined; | |
5952 | } | |
5953 | else | |
5954 | { | |
5955 | if (r_type != R_MIPS_REL32) | |
5956 | value = symbol + addend; | |
5957 | else | |
5958 | value = addend; | |
5959 | } | |
5960 | value &= howto->dst_mask; | |
092dcd75 CD |
5961 | break; |
5962 | ||
5963 | case R_MIPS_PC32: | |
5964 | value = symbol + addend - p; | |
5965 | value &= howto->dst_mask; | |
b49e97c9 TS |
5966 | break; |
5967 | ||
b49e97c9 TS |
5968 | case R_MIPS16_26: |
5969 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5970 | R_MIPS_26. It's only the storage of the relocated field into | |
5971 | the output file that's different. That's handled in | |
5972 | mips_elf_perform_relocation. So, we just fall through to the | |
5973 | R_MIPS_26 case here. */ | |
5974 | case R_MIPS_26: | |
df58fc94 RS |
5975 | case R_MICROMIPS_26_S1: |
5976 | { | |
5977 | unsigned int shift; | |
5978 | ||
df58fc94 RS |
5979 | /* Shift is 2, unusually, for microMIPS JALX. */ |
5980 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
5981 | ||
77434823 | 5982 | if (howto->partial_inplace && !section_p) |
df58fc94 | 5983 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); |
c3eb94b4 MF |
5984 | else |
5985 | value = addend; | |
bc27bb05 MR |
5986 | value += symbol; |
5987 | ||
9d862524 MR |
5988 | /* Make sure the target of a jump is suitably aligned. Bit 0 must |
5989 | be the correct ISA mode selector except for weak undefined | |
5990 | symbols. */ | |
5991 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
5992 | && (*cross_mode_jump_p | |
5993 | ? (value & 3) != (r_type == R_MIPS_26) | |
07d6d2b8 | 5994 | : (value & ((1 << shift) - 1)) != (r_type != R_MIPS_26))) |
bc27bb05 MR |
5995 | return bfd_reloc_outofrange; |
5996 | ||
5997 | value >>= shift; | |
77434823 | 5998 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
df58fc94 RS |
5999 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); |
6000 | value &= howto->dst_mask; | |
6001 | } | |
b49e97c9 TS |
6002 | break; |
6003 | ||
0f20cc35 | 6004 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 6005 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 6006 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
6007 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
6008 | & howto->dst_mask); | |
6009 | break; | |
6010 | ||
6011 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
6012 | case R_MIPS_TLS_DTPREL32: |
6013 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 6014 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 6015 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
6016 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
6017 | break; | |
6018 | ||
6019 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 6020 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 6021 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
6022 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
6023 | & howto->dst_mask); | |
6024 | break; | |
6025 | ||
6026 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
6027 | case R_MIPS_TLS_TPREL32: |
6028 | case R_MIPS_TLS_TPREL64: | |
6029 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 6030 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
6031 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
6032 | break; | |
6033 | ||
b49e97c9 | 6034 | case R_MIPS_HI16: |
d6f16593 | 6035 | case R_MIPS16_HI16: |
df58fc94 | 6036 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
6037 | if (!gp_disp_p) |
6038 | { | |
6039 | value = mips_elf_high (addend + symbol); | |
6040 | value &= howto->dst_mask; | |
6041 | } | |
6042 | else | |
6043 | { | |
d6f16593 | 6044 | /* For MIPS16 ABI code we generate this sequence |
07d6d2b8 AM |
6045 | 0: li $v0,%hi(_gp_disp) |
6046 | 4: addiupc $v1,%lo(_gp_disp) | |
6047 | 8: sll $v0,16 | |
d6f16593 MR |
6048 | 12: addu $v0,$v1 |
6049 | 14: move $gp,$v0 | |
6050 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
6051 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
6052 | ADDIUPC clears the low two bits of the instruction address, | |
6053 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 6054 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 6055 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
6056 | /* The microMIPS .cpload sequence uses the same assembly |
6057 | instructions as the traditional psABI version, but the | |
6058 | incoming $t9 has the low bit set. */ | |
6059 | else if (r_type == R_MICROMIPS_HI16) | |
6060 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
6061 | else |
6062 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
6063 | } |
6064 | break; | |
6065 | ||
6066 | case R_MIPS_LO16: | |
d6f16593 | 6067 | case R_MIPS16_LO16: |
df58fc94 RS |
6068 | case R_MICROMIPS_LO16: |
6069 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
6070 | if (!gp_disp_p) |
6071 | value = (symbol + addend) & howto->dst_mask; | |
6072 | else | |
6073 | { | |
d6f16593 MR |
6074 | /* See the comment for R_MIPS16_HI16 above for the reason |
6075 | for this conditional. */ | |
6076 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 6077 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
6078 | else if (r_type == R_MICROMIPS_LO16 |
6079 | || r_type == R_MICROMIPS_HI0_LO16) | |
6080 | value = addend + gp - p + 3; | |
d6f16593 MR |
6081 | else |
6082 | value = addend + gp - p + 4; | |
b49e97c9 | 6083 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 6084 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
6085 | _gp_disp are normally generated from the .cpload |
6086 | pseudo-op. It generates code that normally looks like | |
6087 | this: | |
6088 | ||
6089 | lui $gp,%hi(_gp_disp) | |
6090 | addiu $gp,$gp,%lo(_gp_disp) | |
6091 | addu $gp,$gp,$t9 | |
6092 | ||
6093 | Here $t9 holds the address of the function being called, | |
6094 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
6095 | relocation can easily overflow in this situation, but the | |
6096 | R_MIPS_HI16 relocation will handle the overflow. | |
6097 | Therefore, we consider this a bug in the MIPS ABI, and do | |
6098 | not check for overflow here. */ | |
6099 | } | |
6100 | break; | |
6101 | ||
6102 | case R_MIPS_LITERAL: | |
df58fc94 | 6103 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
6104 | /* Because we don't merge literal sections, we can handle this |
6105 | just like R_MIPS_GPREL16. In the long run, we should merge | |
6106 | shared literals, and then we will need to additional work | |
6107 | here. */ | |
6108 | ||
6109 | /* Fall through. */ | |
6110 | ||
6111 | case R_MIPS16_GPREL: | |
6112 | /* The R_MIPS16_GPREL performs the same calculation as | |
6113 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
6114 | order. We don't need to do anything special here; the | |
6115 | differences are handled in mips_elf_perform_relocation. */ | |
6116 | case R_MIPS_GPREL16: | |
df58fc94 RS |
6117 | case R_MICROMIPS_GPREL7_S2: |
6118 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
6119 | /* Only sign-extend the addend if it was extracted from the |
6120 | instruction. If the addend was separate, leave it alone, | |
6121 | otherwise we may lose significant bits. */ | |
6122 | if (howto->partial_inplace) | |
a7ebbfdf | 6123 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
6124 | value = symbol + addend - gp; |
6125 | /* If the symbol was local, any earlier relocatable links will | |
6126 | have adjusted its addend with the gp offset, so compensate | |
6127 | for that now. Don't do it for symbols forced local in this | |
6128 | link, though, since they won't have had the gp offset applied | |
6129 | to them before. */ | |
6130 | if (was_local_p) | |
6131 | value += gp0; | |
538baf8b AB |
6132 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6133 | overflowed_p = mips_elf_overflow_p (value, 16); | |
b49e97c9 TS |
6134 | break; |
6135 | ||
738e5348 RS |
6136 | case R_MIPS16_GOT16: |
6137 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
6138 | case R_MIPS_GOT16: |
6139 | case R_MIPS_CALL16: | |
df58fc94 RS |
6140 | case R_MICROMIPS_GOT16: |
6141 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 6142 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 6143 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 6144 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 6145 | { |
5c18022e | 6146 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 6147 | symbol + addend, !was_local_p); |
b49e97c9 TS |
6148 | if (value == MINUS_ONE) |
6149 | return bfd_reloc_outofrange; | |
6150 | value | |
a8028dd0 | 6151 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6152 | overflowed_p = mips_elf_overflow_p (value, 16); |
6153 | break; | |
6154 | } | |
6155 | ||
6156 | /* Fall through. */ | |
6157 | ||
0f20cc35 DJ |
6158 | case R_MIPS_TLS_GD: |
6159 | case R_MIPS_TLS_GOTTPREL: | |
6160 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 6161 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
6162 | case R_MIPS16_TLS_GD: |
6163 | case R_MIPS16_TLS_GOTTPREL: | |
6164 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
6165 | case R_MICROMIPS_TLS_GD: |
6166 | case R_MICROMIPS_TLS_GOTTPREL: | |
6167 | case R_MICROMIPS_TLS_LDM: | |
6168 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
6169 | value = g; |
6170 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6171 | break; | |
6172 | ||
6173 | case R_MIPS_GPREL32: | |
bce03d3d AO |
6174 | value = (addend + symbol + gp0 - gp); |
6175 | if (!save_addend) | |
6176 | value &= howto->dst_mask; | |
b49e97c9 TS |
6177 | break; |
6178 | ||
6179 | case R_MIPS_PC16: | |
bad36eac | 6180 | case R_MIPS_GNU_REL16_S2: |
c3eb94b4 MF |
6181 | if (howto->partial_inplace) |
6182 | addend = _bfd_mips_elf_sign_extend (addend, 18); | |
6183 | ||
9d862524 | 6184 | /* No need to exclude weak undefined symbols here as they resolve |
07d6d2b8 AM |
6185 | to 0 and never set `*cross_mode_jump_p', so this alignment check |
6186 | will never trigger for them. */ | |
9d862524 MR |
6187 | if (*cross_mode_jump_p |
6188 | ? ((symbol + addend) & 3) != 1 | |
6189 | : ((symbol + addend) & 3) != 0) | |
c3eb94b4 MF |
6190 | return bfd_reloc_outofrange; |
6191 | ||
6192 | value = symbol + addend - p; | |
538baf8b AB |
6193 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6194 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
6195 | value >>= howto->rightshift; |
6196 | value &= howto->dst_mask; | |
b49e97c9 TS |
6197 | break; |
6198 | ||
c9775dde MR |
6199 | case R_MIPS16_PC16_S1: |
6200 | if (howto->partial_inplace) | |
6201 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
6202 | ||
6203 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
9d862524 MR |
6204 | && (*cross_mode_jump_p |
6205 | ? ((symbol + addend) & 3) != 0 | |
6206 | : ((symbol + addend) & 1) == 0)) | |
c9775dde MR |
6207 | return bfd_reloc_outofrange; |
6208 | ||
6209 | value = symbol + addend - p; | |
6210 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6211 | overflowed_p = mips_elf_overflow_p (value, 17); | |
6212 | value >>= howto->rightshift; | |
6213 | value &= howto->dst_mask; | |
6214 | break; | |
6215 | ||
7361da2c AB |
6216 | case R_MIPS_PC21_S2: |
6217 | if (howto->partial_inplace) | |
6218 | addend = _bfd_mips_elf_sign_extend (addend, 23); | |
6219 | ||
6220 | if ((symbol + addend) & 3) | |
6221 | return bfd_reloc_outofrange; | |
6222 | ||
6223 | value = symbol + addend - p; | |
538baf8b AB |
6224 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6225 | overflowed_p = mips_elf_overflow_p (value, 23); | |
7361da2c AB |
6226 | value >>= howto->rightshift; |
6227 | value &= howto->dst_mask; | |
6228 | break; | |
6229 | ||
6230 | case R_MIPS_PC26_S2: | |
6231 | if (howto->partial_inplace) | |
6232 | addend = _bfd_mips_elf_sign_extend (addend, 28); | |
6233 | ||
6234 | if ((symbol + addend) & 3) | |
6235 | return bfd_reloc_outofrange; | |
6236 | ||
6237 | value = symbol + addend - p; | |
538baf8b AB |
6238 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6239 | overflowed_p = mips_elf_overflow_p (value, 28); | |
7361da2c AB |
6240 | value >>= howto->rightshift; |
6241 | value &= howto->dst_mask; | |
6242 | break; | |
6243 | ||
6244 | case R_MIPS_PC18_S3: | |
6245 | if (howto->partial_inplace) | |
6246 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6247 | ||
6248 | if ((symbol + addend) & 7) | |
6249 | return bfd_reloc_outofrange; | |
6250 | ||
6251 | value = symbol + addend - ((p | 7) ^ 7); | |
538baf8b AB |
6252 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6253 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6254 | value >>= howto->rightshift; |
6255 | value &= howto->dst_mask; | |
6256 | break; | |
6257 | ||
6258 | case R_MIPS_PC19_S2: | |
6259 | if (howto->partial_inplace) | |
6260 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6261 | ||
6262 | if ((symbol + addend) & 3) | |
6263 | return bfd_reloc_outofrange; | |
6264 | ||
6265 | value = symbol + addend - p; | |
538baf8b AB |
6266 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6267 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6268 | value >>= howto->rightshift; |
6269 | value &= howto->dst_mask; | |
6270 | break; | |
6271 | ||
6272 | case R_MIPS_PCHI16: | |
6273 | value = mips_elf_high (symbol + addend - p); | |
538baf8b AB |
6274 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6275 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7361da2c AB |
6276 | value &= howto->dst_mask; |
6277 | break; | |
6278 | ||
6279 | case R_MIPS_PCLO16: | |
6280 | if (howto->partial_inplace) | |
6281 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
6282 | value = symbol + addend - p; | |
6283 | value &= howto->dst_mask; | |
6284 | break; | |
6285 | ||
df58fc94 | 6286 | case R_MICROMIPS_PC7_S1: |
c3eb94b4 MF |
6287 | if (howto->partial_inplace) |
6288 | addend = _bfd_mips_elf_sign_extend (addend, 8); | |
9d862524 MR |
6289 | |
6290 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6291 | && (*cross_mode_jump_p | |
6292 | ? ((symbol + addend + 2) & 3) != 0 | |
6293 | : ((symbol + addend + 2) & 1) == 0)) | |
6294 | return bfd_reloc_outofrange; | |
6295 | ||
c3eb94b4 | 6296 | value = symbol + addend - p; |
538baf8b AB |
6297 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6298 | overflowed_p = mips_elf_overflow_p (value, 8); | |
df58fc94 RS |
6299 | value >>= howto->rightshift; |
6300 | value &= howto->dst_mask; | |
6301 | break; | |
6302 | ||
6303 | case R_MICROMIPS_PC10_S1: | |
c3eb94b4 MF |
6304 | if (howto->partial_inplace) |
6305 | addend = _bfd_mips_elf_sign_extend (addend, 11); | |
9d862524 MR |
6306 | |
6307 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6308 | && (*cross_mode_jump_p | |
6309 | ? ((symbol + addend + 2) & 3) != 0 | |
6310 | : ((symbol + addend + 2) & 1) == 0)) | |
6311 | return bfd_reloc_outofrange; | |
6312 | ||
c3eb94b4 | 6313 | value = symbol + addend - p; |
538baf8b AB |
6314 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6315 | overflowed_p = mips_elf_overflow_p (value, 11); | |
df58fc94 RS |
6316 | value >>= howto->rightshift; |
6317 | value &= howto->dst_mask; | |
6318 | break; | |
6319 | ||
6320 | case R_MICROMIPS_PC16_S1: | |
c3eb94b4 MF |
6321 | if (howto->partial_inplace) |
6322 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
9d862524 MR |
6323 | |
6324 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6325 | && (*cross_mode_jump_p | |
6326 | ? ((symbol + addend) & 3) != 0 | |
6327 | : ((symbol + addend) & 1) == 0)) | |
6328 | return bfd_reloc_outofrange; | |
6329 | ||
c3eb94b4 | 6330 | value = symbol + addend - p; |
538baf8b AB |
6331 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6332 | overflowed_p = mips_elf_overflow_p (value, 17); | |
df58fc94 RS |
6333 | value >>= howto->rightshift; |
6334 | value &= howto->dst_mask; | |
6335 | break; | |
6336 | ||
6337 | case R_MICROMIPS_PC23_S2: | |
c3eb94b4 MF |
6338 | if (howto->partial_inplace) |
6339 | addend = _bfd_mips_elf_sign_extend (addend, 25); | |
6340 | value = symbol + addend - ((p | 3) ^ 3); | |
538baf8b AB |
6341 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6342 | overflowed_p = mips_elf_overflow_p (value, 25); | |
df58fc94 RS |
6343 | value >>= howto->rightshift; |
6344 | value &= howto->dst_mask; | |
6345 | break; | |
6346 | ||
b49e97c9 TS |
6347 | case R_MIPS_GOT_HI16: |
6348 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
6349 | case R_MICROMIPS_GOT_HI16: |
6350 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
6351 | /* We're allowed to handle these two relocations identically. |
6352 | The dynamic linker is allowed to handle the CALL relocations | |
6353 | differently by creating a lazy evaluation stub. */ | |
6354 | value = g; | |
6355 | value = mips_elf_high (value); | |
6356 | value &= howto->dst_mask; | |
6357 | break; | |
6358 | ||
6359 | case R_MIPS_GOT_LO16: | |
6360 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
6361 | case R_MICROMIPS_GOT_LO16: |
6362 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
6363 | value = g & howto->dst_mask; |
6364 | break; | |
6365 | ||
6366 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 6367 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 6368 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
6369 | if (value == MINUS_ONE) |
6370 | return bfd_reloc_outofrange; | |
a8028dd0 | 6371 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6372 | overflowed_p = mips_elf_overflow_p (value, 16); |
6373 | break; | |
6374 | ||
6375 | case R_MIPS_GOT_OFST: | |
df58fc94 | 6376 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 6377 | if (local_p) |
5c18022e | 6378 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
6379 | else |
6380 | value = addend; | |
b49e97c9 TS |
6381 | overflowed_p = mips_elf_overflow_p (value, 16); |
6382 | break; | |
6383 | ||
6384 | case R_MIPS_SUB: | |
df58fc94 | 6385 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
6386 | value = symbol - addend; |
6387 | value &= howto->dst_mask; | |
6388 | break; | |
6389 | ||
6390 | case R_MIPS_HIGHER: | |
df58fc94 | 6391 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
6392 | value = mips_elf_higher (addend + symbol); |
6393 | value &= howto->dst_mask; | |
6394 | break; | |
6395 | ||
6396 | case R_MIPS_HIGHEST: | |
df58fc94 | 6397 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
6398 | value = mips_elf_highest (addend + symbol); |
6399 | value &= howto->dst_mask; | |
6400 | break; | |
6401 | ||
6402 | case R_MIPS_SCN_DISP: | |
df58fc94 | 6403 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
6404 | value = symbol + addend - sec->output_offset; |
6405 | value &= howto->dst_mask; | |
6406 | break; | |
6407 | ||
b49e97c9 | 6408 | case R_MIPS_JALR: |
df58fc94 | 6409 | case R_MICROMIPS_JALR: |
1367d393 ILT |
6410 | /* This relocation is only a hint. In some cases, we optimize |
6411 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
6412 | when the symbol does not resolve locally. */ |
6413 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 | 6414 | return bfd_reloc_continue; |
c1556ecd MR |
6415 | /* We can't optimize cross-mode jumps either. */ |
6416 | if (*cross_mode_jump_p) | |
6417 | return bfd_reloc_continue; | |
1367d393 | 6418 | value = symbol + addend; |
c1556ecd MR |
6419 | /* Neither we can non-instruction-aligned targets. */ |
6420 | if (r_type == R_MIPS_JALR ? (value & 3) != 0 : (value & 1) == 0) | |
6421 | return bfd_reloc_continue; | |
1367d393 | 6422 | break; |
b49e97c9 | 6423 | |
1367d393 | 6424 | case R_MIPS_PJUMP: |
b49e97c9 TS |
6425 | case R_MIPS_GNU_VTINHERIT: |
6426 | case R_MIPS_GNU_VTENTRY: | |
6427 | /* We don't do anything with these at present. */ | |
6428 | return bfd_reloc_continue; | |
6429 | ||
6430 | default: | |
6431 | /* An unrecognized relocation type. */ | |
6432 | return bfd_reloc_notsupported; | |
6433 | } | |
6434 | ||
6435 | /* Store the VALUE for our caller. */ | |
6436 | *valuep = value; | |
6437 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
6438 | } | |
6439 | ||
b49e97c9 TS |
6440 | /* It has been determined that the result of the RELOCATION is the |
6441 | VALUE. Use HOWTO to place VALUE into the output file at the | |
6442 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 6443 | relocation applies. |
38a7df63 | 6444 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 6445 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 6446 | |
b34976b6 | 6447 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 6448 | |
b34976b6 | 6449 | static bfd_boolean |
9719ad41 RS |
6450 | mips_elf_perform_relocation (struct bfd_link_info *info, |
6451 | reloc_howto_type *howto, | |
6452 | const Elf_Internal_Rela *relocation, | |
6453 | bfd_vma value, bfd *input_bfd, | |
6454 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 6455 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
6456 | { |
6457 | bfd_vma x; | |
6458 | bfd_byte *location; | |
6459 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
6460 | ||
6461 | /* Figure out where the relocation is occurring. */ | |
6462 | location = contents + relocation->r_offset; | |
6463 | ||
df58fc94 | 6464 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
d6f16593 | 6465 | |
b49e97c9 TS |
6466 | /* Obtain the current value. */ |
6467 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
6468 | ||
6469 | /* Clear the field we are setting. */ | |
6470 | x &= ~howto->dst_mask; | |
6471 | ||
b49e97c9 TS |
6472 | /* Set the field. */ |
6473 | x |= (value & howto->dst_mask); | |
6474 | ||
a6ebf616 | 6475 | /* Detect incorrect JALX usage. If required, turn JAL or BAL into JALX. */ |
9d862524 MR |
6476 | if (!cross_mode_jump_p && jal_reloc_p (r_type)) |
6477 | { | |
6478 | bfd_vma opcode = x >> 26; | |
6479 | ||
6480 | if (r_type == R_MIPS16_26 ? opcode == 0x7 | |
6481 | : r_type == R_MICROMIPS_26_S1 ? opcode == 0x3c | |
6482 | : opcode == 0x1d) | |
6483 | { | |
6484 | info->callbacks->einfo | |
2c1c9679 | 6485 | (_("%X%H: unsupported JALX to the same ISA mode\n"), |
9d862524 MR |
6486 | input_bfd, input_section, relocation->r_offset); |
6487 | return TRUE; | |
6488 | } | |
6489 | } | |
38a7df63 | 6490 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 6491 | { |
b34976b6 | 6492 | bfd_boolean ok; |
b49e97c9 TS |
6493 | bfd_vma opcode = x >> 26; |
6494 | bfd_vma jalx_opcode; | |
6495 | ||
6496 | /* Check to see if the opcode is already JAL or JALX. */ | |
6497 | if (r_type == R_MIPS16_26) | |
6498 | { | |
6499 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
6500 | jalx_opcode = 0x7; | |
6501 | } | |
df58fc94 RS |
6502 | else if (r_type == R_MICROMIPS_26_S1) |
6503 | { | |
6504 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
6505 | jalx_opcode = 0x3c; | |
6506 | } | |
b49e97c9 TS |
6507 | else |
6508 | { | |
6509 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
6510 | jalx_opcode = 0x1d; | |
6511 | } | |
6512 | ||
3bdf9505 | 6513 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
07d6d2b8 | 6514 | convert J or JALS to JALX. */ |
b49e97c9 TS |
6515 | if (!ok) |
6516 | { | |
5f68df25 | 6517 | info->callbacks->einfo |
2c1c9679 | 6518 | (_("%X%H: unsupported jump between ISA modes; " |
5f68df25 MR |
6519 | "consider recompiling with interlinking enabled\n"), |
6520 | input_bfd, input_section, relocation->r_offset); | |
6521 | return TRUE; | |
b49e97c9 TS |
6522 | } |
6523 | ||
6524 | /* Make this the JALX opcode. */ | |
6525 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
6526 | } | |
9d862524 MR |
6527 | else if (cross_mode_jump_p && b_reloc_p (r_type)) |
6528 | { | |
a6ebf616 MR |
6529 | bfd_boolean ok = FALSE; |
6530 | bfd_vma opcode = x >> 16; | |
6531 | bfd_vma jalx_opcode = 0; | |
70e65ca8 | 6532 | bfd_vma sign_bit = 0; |
a6ebf616 MR |
6533 | bfd_vma addr; |
6534 | bfd_vma dest; | |
6535 | ||
6536 | if (r_type == R_MICROMIPS_PC16_S1) | |
6537 | { | |
6538 | ok = opcode == 0x4060; | |
6539 | jalx_opcode = 0x3c; | |
70e65ca8 | 6540 | sign_bit = 0x10000; |
a6ebf616 MR |
6541 | value <<= 1; |
6542 | } | |
6543 | else if (r_type == R_MIPS_PC16 || r_type == R_MIPS_GNU_REL16_S2) | |
6544 | { | |
6545 | ok = opcode == 0x411; | |
6546 | jalx_opcode = 0x1d; | |
70e65ca8 | 6547 | sign_bit = 0x20000; |
a6ebf616 MR |
6548 | value <<= 2; |
6549 | } | |
6550 | ||
8b10b0b3 | 6551 | if (ok && !bfd_link_pic (info)) |
a6ebf616 | 6552 | { |
8b10b0b3 MR |
6553 | addr = (input_section->output_section->vma |
6554 | + input_section->output_offset | |
6555 | + relocation->r_offset | |
6556 | + 4); | |
70e65ca8 MR |
6557 | dest = (addr |
6558 | + (((value & ((sign_bit << 1) - 1)) ^ sign_bit) - sign_bit)); | |
a6ebf616 | 6559 | |
8b10b0b3 MR |
6560 | if ((addr >> 28) << 28 != (dest >> 28) << 28) |
6561 | { | |
6562 | info->callbacks->einfo | |
2c1c9679 | 6563 | (_("%X%H: cannot convert branch between ISA modes " |
8b10b0b3 MR |
6564 | "to JALX: relocation out of range\n"), |
6565 | input_bfd, input_section, relocation->r_offset); | |
6566 | return TRUE; | |
6567 | } | |
a6ebf616 | 6568 | |
8b10b0b3 MR |
6569 | /* Make this the JALX opcode. */ |
6570 | x = ((dest >> 2) & 0x3ffffff) | jalx_opcode << 26; | |
6571 | } | |
6572 | else if (!mips_elf_hash_table (info)->ignore_branch_isa) | |
a6ebf616 MR |
6573 | { |
6574 | info->callbacks->einfo | |
2c1c9679 | 6575 | (_("%X%H: unsupported branch between ISA modes\n"), |
a6ebf616 MR |
6576 | input_bfd, input_section, relocation->r_offset); |
6577 | return TRUE; | |
6578 | } | |
9d862524 | 6579 | } |
b49e97c9 | 6580 | |
38a7df63 CF |
6581 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
6582 | range. */ | |
0e1862bb | 6583 | if (!bfd_link_relocatable (info) |
38a7df63 | 6584 | && !cross_mode_jump_p |
cd8d5a82 CF |
6585 | && ((JAL_TO_BAL_P (input_bfd) |
6586 | && r_type == R_MIPS_26 | |
0e392101 | 6587 | && (x >> 26) == 0x3) /* jal addr */ |
cd8d5a82 CF |
6588 | || (JALR_TO_BAL_P (input_bfd) |
6589 | && r_type == R_MIPS_JALR | |
0e392101 | 6590 | && x == 0x0320f809) /* jalr t9 */ |
38a7df63 CF |
6591 | || (JR_TO_B_P (input_bfd) |
6592 | && r_type == R_MIPS_JALR | |
0e392101 | 6593 | && (x & ~1) == 0x03200008))) /* jr t9 / jalr zero, t9 */ |
1367d393 ILT |
6594 | { |
6595 | bfd_vma addr; | |
6596 | bfd_vma dest; | |
6597 | bfd_signed_vma off; | |
6598 | ||
6599 | addr = (input_section->output_section->vma | |
6600 | + input_section->output_offset | |
6601 | + relocation->r_offset | |
6602 | + 4); | |
6603 | if (r_type == R_MIPS_26) | |
6604 | dest = (value << 2) | ((addr >> 28) << 28); | |
6605 | else | |
6606 | dest = value; | |
6607 | off = dest - addr; | |
6608 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 | 6609 | { |
0e392101 | 6610 | if ((x & ~1) == 0x03200008) /* jr t9 / jalr zero, t9 */ |
38a7df63 CF |
6611 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ |
6612 | else | |
6613 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
6614 | } | |
1367d393 ILT |
6615 | } |
6616 | ||
b49e97c9 | 6617 | /* Put the value into the output. */ |
98e10ffa | 6618 | mips_elf_store_contents (howto, relocation, input_bfd, contents, x); |
d6f16593 | 6619 | |
0e1862bb | 6620 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !bfd_link_relocatable (info), |
df58fc94 | 6621 | location); |
d6f16593 | 6622 | |
b34976b6 | 6623 | return TRUE; |
b49e97c9 | 6624 | } |
b49e97c9 | 6625 | \f |
b49e97c9 TS |
6626 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6627 | is the original relocation, which is now being transformed into a | |
6628 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
6629 | caller should store the result in place of the original addend. */ | |
6630 | ||
b34976b6 | 6631 | static bfd_boolean |
9719ad41 RS |
6632 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
6633 | struct bfd_link_info *info, | |
6634 | const Elf_Internal_Rela *rel, | |
6635 | struct mips_elf_link_hash_entry *h, | |
6636 | asection *sec, bfd_vma symbol, | |
6637 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 6638 | { |
947216bf | 6639 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
6640 | asection *sreloc; |
6641 | bfd *dynobj; | |
6642 | int r_type; | |
5d41f0b6 RS |
6643 | long indx; |
6644 | bfd_boolean defined_p; | |
0a44bf69 | 6645 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6646 | |
0a44bf69 | 6647 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6648 | BFD_ASSERT (htab != NULL); |
6649 | ||
b49e97c9 TS |
6650 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
6651 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 6652 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
6653 | BFD_ASSERT (sreloc != NULL); |
6654 | BFD_ASSERT (sreloc->contents != NULL); | |
6655 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 6656 | < sreloc->size); |
b49e97c9 | 6657 | |
b49e97c9 TS |
6658 | outrel[0].r_offset = |
6659 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
6660 | if (ABI_64_P (output_bfd)) |
6661 | { | |
6662 | outrel[1].r_offset = | |
6663 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6664 | outrel[2].r_offset = | |
6665 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6666 | } | |
b49e97c9 | 6667 | |
c5ae1840 | 6668 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6669 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
6670 | return TRUE; |
6671 | ||
6672 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6673 | { |
6674 | /* The relocation field has been converted into a relative value of | |
6675 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6676 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6677 | *addendp += symbol; |
5d41f0b6 | 6678 | return TRUE; |
0d591ff7 | 6679 | } |
b49e97c9 | 6680 | |
5d41f0b6 RS |
6681 | /* We must now calculate the dynamic symbol table index to use |
6682 | in the relocation. */ | |
d4a77f3f | 6683 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6684 | { |
020d7251 | 6685 | BFD_ASSERT (htab->is_vxworks || h->global_got_area != GGA_NONE); |
5d41f0b6 RS |
6686 | indx = h->root.dynindx; |
6687 | if (SGI_COMPAT (output_bfd)) | |
6688 | defined_p = h->root.def_regular; | |
6689 | else | |
6690 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6691 | relocation field. It therefore treats relocs against | |
6692 | defined symbols in the same way as relocs against | |
6693 | undefined symbols. */ | |
6694 | defined_p = FALSE; | |
6695 | } | |
b49e97c9 TS |
6696 | else |
6697 | { | |
5d41f0b6 RS |
6698 | if (sec != NULL && bfd_is_abs_section (sec)) |
6699 | indx = 0; | |
6700 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6701 | { |
5d41f0b6 RS |
6702 | bfd_set_error (bfd_error_bad_value); |
6703 | return FALSE; | |
b49e97c9 TS |
6704 | } |
6705 | else | |
6706 | { | |
5d41f0b6 | 6707 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6708 | if (indx == 0) |
6709 | { | |
6710 | asection *osec = htab->root.text_index_section; | |
6711 | indx = elf_section_data (osec)->dynindx; | |
6712 | } | |
5d41f0b6 RS |
6713 | if (indx == 0) |
6714 | abort (); | |
b49e97c9 TS |
6715 | } |
6716 | ||
5d41f0b6 RS |
6717 | /* Instead of generating a relocation using the section |
6718 | symbol, we may as well make it a fully relative | |
6719 | relocation. We want to avoid generating relocations to | |
6720 | local symbols because we used to generate them | |
6721 | incorrectly, without adding the original symbol value, | |
6722 | which is mandated by the ABI for section symbols. In | |
6723 | order to give dynamic loaders and applications time to | |
6724 | phase out the incorrect use, we refrain from emitting | |
6725 | section-relative relocations. It's not like they're | |
6726 | useful, after all. This should be a bit more efficient | |
6727 | as well. */ | |
6728 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6729 | the ABI says that relocations against STN_UNDEF should have | |
6730 | a symbol value of 0. Irix rld honors this, so relocations | |
6731 | against STN_UNDEF have no effect. */ | |
6732 | if (!SGI_COMPAT (output_bfd)) | |
6733 | indx = 0; | |
6734 | defined_p = TRUE; | |
b49e97c9 TS |
6735 | } |
6736 | ||
5d41f0b6 RS |
6737 | /* If the relocation was previously an absolute relocation and |
6738 | this symbol will not be referred to by the relocation, we must | |
6739 | adjust it by the value we give it in the dynamic symbol table. | |
6740 | Otherwise leave the job up to the dynamic linker. */ | |
6741 | if (defined_p && r_type != R_MIPS_REL32) | |
6742 | *addendp += symbol; | |
6743 | ||
0a44bf69 RS |
6744 | if (htab->is_vxworks) |
6745 | /* VxWorks uses non-relative relocations for this. */ | |
6746 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6747 | else | |
6748 | /* The relocation is always an REL32 relocation because we don't | |
6749 | know where the shared library will wind up at load-time. */ | |
6750 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6751 | R_MIPS_REL32); | |
6752 | ||
5d41f0b6 RS |
6753 | /* For strict adherence to the ABI specification, we should |
6754 | generate a R_MIPS_64 relocation record by itself before the | |
6755 | _REL32/_64 record as well, such that the addend is read in as | |
6756 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6757 | However, since none of the existing ELF64 MIPS dynamic | |
6758 | loaders seems to care, we don't waste space with these | |
6759 | artificial relocations. If this turns out to not be true, | |
6760 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6761 | as to make room for a pair of dynamic relocations per | |
6762 | invocation if ABI_64_P, and here we should generate an | |
6763 | additional relocation record with R_MIPS_64 by itself for a | |
6764 | NULL symbol before this relocation record. */ | |
6765 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6766 | ABI_64_P (output_bfd) | |
6767 | ? R_MIPS_64 | |
6768 | : R_MIPS_NONE); | |
6769 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6770 | ||
6771 | /* Adjust the output offset of the relocation to reference the | |
6772 | correct location in the output file. */ | |
6773 | outrel[0].r_offset += (input_section->output_section->vma | |
6774 | + input_section->output_offset); | |
6775 | outrel[1].r_offset += (input_section->output_section->vma | |
6776 | + input_section->output_offset); | |
6777 | outrel[2].r_offset += (input_section->output_section->vma | |
6778 | + input_section->output_offset); | |
6779 | ||
b49e97c9 TS |
6780 | /* Put the relocation back out. We have to use the special |
6781 | relocation outputter in the 64-bit case since the 64-bit | |
6782 | relocation format is non-standard. */ | |
6783 | if (ABI_64_P (output_bfd)) | |
6784 | { | |
6785 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6786 | (output_bfd, &outrel[0], | |
6787 | (sreloc->contents | |
6788 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6789 | } | |
0a44bf69 RS |
6790 | else if (htab->is_vxworks) |
6791 | { | |
6792 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6793 | outrel[0].r_addend = *addendp; | |
6794 | bfd_elf32_swap_reloca_out | |
6795 | (output_bfd, &outrel[0], | |
6796 | (sreloc->contents | |
6797 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6798 | } | |
b49e97c9 | 6799 | else |
947216bf AM |
6800 | bfd_elf32_swap_reloc_out |
6801 | (output_bfd, &outrel[0], | |
6802 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6803 | |
b49e97c9 TS |
6804 | /* We've now added another relocation. */ |
6805 | ++sreloc->reloc_count; | |
6806 | ||
6807 | /* Make sure the output section is writable. The dynamic linker | |
6808 | will be writing to it. */ | |
6809 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6810 | |= SHF_WRITE; | |
6811 | ||
6812 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6813 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6814 | { |
3d4d4302 | 6815 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6816 | bfd_byte *cr; |
6817 | ||
6818 | if (scpt) | |
6819 | { | |
6820 | Elf32_crinfo cptrel; | |
6821 | ||
6822 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6823 | cptrel.vaddr = (rel->r_offset | |
6824 | + input_section->output_section->vma | |
6825 | + input_section->output_offset); | |
6826 | if (r_type == R_MIPS_REL32) | |
6827 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6828 | else | |
6829 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6830 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6831 | cptrel.konst = *addendp; | |
6832 | ||
6833 | cr = (scpt->contents | |
6834 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6835 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6836 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6837 | ((Elf32_External_crinfo *) cr | |
6838 | + scpt->reloc_count)); | |
6839 | ++scpt->reloc_count; | |
6840 | } | |
6841 | } | |
6842 | ||
943284cc DJ |
6843 | /* If we've written this relocation for a readonly section, |
6844 | we need to set DF_TEXTREL again, so that we do not delete the | |
6845 | DT_TEXTREL tag. */ | |
6846 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6847 | info->flags |= DF_TEXTREL; | |
6848 | ||
b34976b6 | 6849 | return TRUE; |
b49e97c9 TS |
6850 | } |
6851 | \f | |
b49e97c9 TS |
6852 | /* Return the MACH for a MIPS e_flags value. */ |
6853 | ||
6854 | unsigned long | |
9719ad41 | 6855 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6856 | { |
6857 | switch (flags & EF_MIPS_MACH) | |
6858 | { | |
6859 | case E_MIPS_MACH_3900: | |
6860 | return bfd_mach_mips3900; | |
6861 | ||
6862 | case E_MIPS_MACH_4010: | |
6863 | return bfd_mach_mips4010; | |
6864 | ||
6865 | case E_MIPS_MACH_4100: | |
6866 | return bfd_mach_mips4100; | |
6867 | ||
6868 | case E_MIPS_MACH_4111: | |
6869 | return bfd_mach_mips4111; | |
6870 | ||
00707a0e RS |
6871 | case E_MIPS_MACH_4120: |
6872 | return bfd_mach_mips4120; | |
6873 | ||
b49e97c9 TS |
6874 | case E_MIPS_MACH_4650: |
6875 | return bfd_mach_mips4650; | |
6876 | ||
00707a0e RS |
6877 | case E_MIPS_MACH_5400: |
6878 | return bfd_mach_mips5400; | |
6879 | ||
6880 | case E_MIPS_MACH_5500: | |
6881 | return bfd_mach_mips5500; | |
6882 | ||
e407c74b NC |
6883 | case E_MIPS_MACH_5900: |
6884 | return bfd_mach_mips5900; | |
6885 | ||
0d2e43ed ILT |
6886 | case E_MIPS_MACH_9000: |
6887 | return bfd_mach_mips9000; | |
6888 | ||
b49e97c9 TS |
6889 | case E_MIPS_MACH_SB1: |
6890 | return bfd_mach_mips_sb1; | |
6891 | ||
350cc38d MS |
6892 | case E_MIPS_MACH_LS2E: |
6893 | return bfd_mach_mips_loongson_2e; | |
6894 | ||
6895 | case E_MIPS_MACH_LS2F: | |
6896 | return bfd_mach_mips_loongson_2f; | |
6897 | ||
ac8cb70f CX |
6898 | case E_MIPS_MACH_GS464: |
6899 | return bfd_mach_mips_gs464; | |
fd503541 | 6900 | |
bd782c07 CX |
6901 | case E_MIPS_MACH_GS464E: |
6902 | return bfd_mach_mips_gs464e; | |
6903 | ||
9108bc33 CX |
6904 | case E_MIPS_MACH_GS264E: |
6905 | return bfd_mach_mips_gs264e; | |
6906 | ||
2c629856 N |
6907 | case E_MIPS_MACH_OCTEON3: |
6908 | return bfd_mach_mips_octeon3; | |
6909 | ||
432233b3 AP |
6910 | case E_MIPS_MACH_OCTEON2: |
6911 | return bfd_mach_mips_octeon2; | |
6912 | ||
6f179bd0 AN |
6913 | case E_MIPS_MACH_OCTEON: |
6914 | return bfd_mach_mips_octeon; | |
6915 | ||
52b6b6b9 JM |
6916 | case E_MIPS_MACH_XLR: |
6917 | return bfd_mach_mips_xlr; | |
6918 | ||
38bf472a MR |
6919 | case E_MIPS_MACH_IAMR2: |
6920 | return bfd_mach_mips_interaptiv_mr2; | |
6921 | ||
b49e97c9 TS |
6922 | default: |
6923 | switch (flags & EF_MIPS_ARCH) | |
6924 | { | |
6925 | default: | |
6926 | case E_MIPS_ARCH_1: | |
6927 | return bfd_mach_mips3000; | |
b49e97c9 TS |
6928 | |
6929 | case E_MIPS_ARCH_2: | |
6930 | return bfd_mach_mips6000; | |
b49e97c9 TS |
6931 | |
6932 | case E_MIPS_ARCH_3: | |
6933 | return bfd_mach_mips4000; | |
b49e97c9 TS |
6934 | |
6935 | case E_MIPS_ARCH_4: | |
6936 | return bfd_mach_mips8000; | |
b49e97c9 TS |
6937 | |
6938 | case E_MIPS_ARCH_5: | |
6939 | return bfd_mach_mips5; | |
b49e97c9 TS |
6940 | |
6941 | case E_MIPS_ARCH_32: | |
6942 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
6943 | |
6944 | case E_MIPS_ARCH_64: | |
6945 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6946 | |
6947 | case E_MIPS_ARCH_32R2: | |
6948 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6949 | |
6950 | case E_MIPS_ARCH_64R2: | |
6951 | return bfd_mach_mipsisa64r2; | |
7361da2c AB |
6952 | |
6953 | case E_MIPS_ARCH_32R6: | |
6954 | return bfd_mach_mipsisa32r6; | |
6955 | ||
6956 | case E_MIPS_ARCH_64R6: | |
6957 | return bfd_mach_mipsisa64r6; | |
b49e97c9 TS |
6958 | } |
6959 | } | |
6960 | ||
6961 | return 0; | |
6962 | } | |
6963 | ||
6964 | /* Return printable name for ABI. */ | |
6965 | ||
6966 | static INLINE char * | |
9719ad41 | 6967 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6968 | { |
6969 | flagword flags; | |
6970 | ||
6971 | flags = elf_elfheader (abfd)->e_flags; | |
6972 | switch (flags & EF_MIPS_ABI) | |
6973 | { | |
6974 | case 0: | |
6975 | if (ABI_N32_P (abfd)) | |
6976 | return "N32"; | |
6977 | else if (ABI_64_P (abfd)) | |
6978 | return "64"; | |
6979 | else | |
6980 | return "none"; | |
6981 | case E_MIPS_ABI_O32: | |
6982 | return "O32"; | |
6983 | case E_MIPS_ABI_O64: | |
6984 | return "O64"; | |
6985 | case E_MIPS_ABI_EABI32: | |
6986 | return "EABI32"; | |
6987 | case E_MIPS_ABI_EABI64: | |
6988 | return "EABI64"; | |
6989 | default: | |
6990 | return "unknown abi"; | |
6991 | } | |
6992 | } | |
6993 | \f | |
6994 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6995 | other is for small objects. All the small objects are kept | |
6996 | together, and then referenced via the gp pointer, which yields | |
6997 | faster assembler code. This is what we use for the small common | |
6998 | section. This approach is copied from ecoff.c. */ | |
6999 | static asection mips_elf_scom_section; | |
7000 | static asymbol mips_elf_scom_symbol; | |
7001 | static asymbol *mips_elf_scom_symbol_ptr; | |
7002 | ||
7003 | /* MIPS ELF also uses an acommon section, which represents an | |
7004 | allocated common symbol which may be overridden by a | |
7005 | definition in a shared library. */ | |
7006 | static asection mips_elf_acom_section; | |
7007 | static asymbol mips_elf_acom_symbol; | |
7008 | static asymbol *mips_elf_acom_symbol_ptr; | |
7009 | ||
738e5348 | 7010 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
7011 | |
7012 | void | |
9719ad41 | 7013 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
7014 | { |
7015 | elf_symbol_type *elfsym; | |
7016 | ||
738e5348 | 7017 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
7018 | elfsym = (elf_symbol_type *) asym; |
7019 | switch (elfsym->internal_elf_sym.st_shndx) | |
7020 | { | |
7021 | case SHN_MIPS_ACOMMON: | |
7022 | /* This section is used in a dynamically linked executable file. | |
7023 | It is an allocated common section. The dynamic linker can | |
7024 | either resolve these symbols to something in a shared | |
7025 | library, or it can just leave them here. For our purposes, | |
7026 | we can consider these symbols to be in a new section. */ | |
7027 | if (mips_elf_acom_section.name == NULL) | |
7028 | { | |
7029 | /* Initialize the acommon section. */ | |
7030 | mips_elf_acom_section.name = ".acommon"; | |
7031 | mips_elf_acom_section.flags = SEC_ALLOC; | |
7032 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
7033 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
7034 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
7035 | mips_elf_acom_symbol.name = ".acommon"; | |
7036 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
7037 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
7038 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
7039 | } | |
7040 | asym->section = &mips_elf_acom_section; | |
7041 | break; | |
7042 | ||
7043 | case SHN_COMMON: | |
7044 | /* Common symbols less than the GP size are automatically | |
7045 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
7046 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 7047 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
7048 | || IRIX_COMPAT (abfd) == ict_irix6) |
7049 | break; | |
7050 | /* Fall through. */ | |
7051 | case SHN_MIPS_SCOMMON: | |
7052 | if (mips_elf_scom_section.name == NULL) | |
7053 | { | |
7054 | /* Initialize the small common section. */ | |
7055 | mips_elf_scom_section.name = ".scommon"; | |
7056 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
7057 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
7058 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
7059 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
7060 | mips_elf_scom_symbol.name = ".scommon"; | |
7061 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
7062 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
7063 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
7064 | } | |
7065 | asym->section = &mips_elf_scom_section; | |
7066 | asym->value = elfsym->internal_elf_sym.st_size; | |
7067 | break; | |
7068 | ||
7069 | case SHN_MIPS_SUNDEFINED: | |
7070 | asym->section = bfd_und_section_ptr; | |
7071 | break; | |
7072 | ||
b49e97c9 | 7073 | case SHN_MIPS_TEXT: |
00b4930b TS |
7074 | { |
7075 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
7076 | ||
00b4930b TS |
7077 | if (section != NULL) |
7078 | { | |
7079 | asym->section = section; | |
7080 | /* MIPS_TEXT is a bit special, the address is not an offset | |
de194d85 | 7081 | to the base of the .text section. So subtract the section |
00b4930b TS |
7082 | base address to make it an offset. */ |
7083 | asym->value -= section->vma; | |
7084 | } | |
7085 | } | |
b49e97c9 TS |
7086 | break; |
7087 | ||
7088 | case SHN_MIPS_DATA: | |
00b4930b TS |
7089 | { |
7090 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
7091 | ||
00b4930b TS |
7092 | if (section != NULL) |
7093 | { | |
7094 | asym->section = section; | |
7095 | /* MIPS_DATA is a bit special, the address is not an offset | |
de194d85 | 7096 | to the base of the .data section. So subtract the section |
00b4930b TS |
7097 | base address to make it an offset. */ |
7098 | asym->value -= section->vma; | |
7099 | } | |
7100 | } | |
b49e97c9 | 7101 | break; |
b49e97c9 | 7102 | } |
738e5348 | 7103 | |
df58fc94 RS |
7104 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
7105 | or microMIPS one. */ | |
738e5348 RS |
7106 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
7107 | && (asym->value & 1) != 0) | |
7108 | { | |
7109 | asym->value--; | |
e8faf7d1 | 7110 | if (MICROMIPS_P (abfd)) |
df58fc94 RS |
7111 | elfsym->internal_elf_sym.st_other |
7112 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
7113 | else | |
7114 | elfsym->internal_elf_sym.st_other | |
7115 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 7116 | } |
b49e97c9 TS |
7117 | } |
7118 | \f | |
8c946ed5 RS |
7119 | /* Implement elf_backend_eh_frame_address_size. This differs from |
7120 | the default in the way it handles EABI64. | |
7121 | ||
7122 | EABI64 was originally specified as an LP64 ABI, and that is what | |
7123 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
7124 | historically accepted the combination of -mabi=eabi and -mlong32, | |
7125 | and this ILP32 variation has become semi-official over time. | |
7126 | Both forms use elf32 and have pointer-sized FDE addresses. | |
7127 | ||
7128 | If an EABI object was generated by GCC 4.0 or above, it will have | |
7129 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
7130 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
7131 | have no special marking to distinguish them from LP64 objects. | |
7132 | ||
7133 | We don't want users of the official LP64 ABI to be punished for the | |
7134 | existence of the ILP32 variant, but at the same time, we don't want | |
7135 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
7136 | We therefore take the following approach: | |
7137 | ||
7138 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
07d6d2b8 | 7139 | determine the pointer size. |
8c946ed5 RS |
7140 | |
7141 | - Otherwise check the type of the first relocation. Assume that | |
07d6d2b8 | 7142 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. |
8c946ed5 RS |
7143 | |
7144 | - Otherwise punt. | |
7145 | ||
7146 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
7147 | compilers because, in the kind of output generated by those compilers, | |
7148 | the first relocation will be associated with either a CIE personality | |
7149 | routine or an FDE start address. Furthermore, the compilers never | |
7150 | used a special (non-pointer) encoding for this ABI. | |
7151 | ||
7152 | Checking the relocation type should also be safe because there is no | |
7153 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
7154 | did so. */ | |
7155 | ||
7156 | unsigned int | |
76c20d54 | 7157 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, const asection *sec) |
8c946ed5 RS |
7158 | { |
7159 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
7160 | return 8; | |
7161 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
7162 | { | |
7163 | bfd_boolean long32_p, long64_p; | |
7164 | ||
7165 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
7166 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
7167 | if (long32_p && long64_p) | |
7168 | return 0; | |
7169 | if (long32_p) | |
7170 | return 4; | |
7171 | if (long64_p) | |
7172 | return 8; | |
7173 | ||
7174 | if (sec->reloc_count > 0 | |
7175 | && elf_section_data (sec)->relocs != NULL | |
7176 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
7177 | == R_MIPS_64)) | |
7178 | return 8; | |
7179 | ||
7180 | return 0; | |
7181 | } | |
7182 | return 4; | |
7183 | } | |
7184 | \f | |
174fd7f9 RS |
7185 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
7186 | relocations against two unnamed section symbols to resolve to the | |
7187 | same address. For example, if we have code like: | |
7188 | ||
7189 | lw $4,%got_disp(.data)($gp) | |
7190 | lw $25,%got_disp(.text)($gp) | |
7191 | jalr $25 | |
7192 | ||
7193 | then the linker will resolve both relocations to .data and the program | |
7194 | will jump there rather than to .text. | |
7195 | ||
7196 | We can work around this problem by giving names to local section symbols. | |
7197 | This is also what the MIPSpro tools do. */ | |
7198 | ||
7199 | bfd_boolean | |
7200 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
7201 | { | |
7202 | return SGI_COMPAT (abfd); | |
7203 | } | |
7204 | \f | |
b49e97c9 TS |
7205 | /* Work over a section just before writing it out. This routine is |
7206 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
7207 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
7208 | a better way. */ | |
7209 | ||
b34976b6 | 7210 | bfd_boolean |
9719ad41 | 7211 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
7212 | { |
7213 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
7214 | && hdr->sh_size > 0) | |
7215 | { | |
7216 | bfd_byte buf[4]; | |
7217 | ||
b49e97c9 TS |
7218 | BFD_ASSERT (hdr->contents == NULL); |
7219 | ||
2d6dda71 MR |
7220 | if (hdr->sh_size != sizeof (Elf32_External_RegInfo)) |
7221 | { | |
7222 | _bfd_error_handler | |
2c1c9679 | 7223 | (_("%pB: incorrect `.reginfo' section size; " |
2dcf00ce AM |
7224 | "expected %" PRIu64 ", got %" PRIu64), |
7225 | abfd, (uint64_t) sizeof (Elf32_External_RegInfo), | |
7226 | (uint64_t) hdr->sh_size); | |
2d6dda71 MR |
7227 | bfd_set_error (bfd_error_bad_value); |
7228 | return FALSE; | |
7229 | } | |
7230 | ||
b49e97c9 TS |
7231 | if (bfd_seek (abfd, |
7232 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
7233 | SEEK_SET) != 0) | |
b34976b6 | 7234 | return FALSE; |
b49e97c9 | 7235 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7236 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 7237 | return FALSE; |
b49e97c9 TS |
7238 | } |
7239 | ||
7240 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
7241 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
7242 | && mips_elf_section_data (hdr->bfd_section) != NULL |
7243 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
7244 | { |
7245 | bfd_byte *contents, *l, *lend; | |
7246 | ||
f0abc2a1 AM |
7247 | /* We stored the section contents in the tdata field in the |
7248 | set_section_contents routine. We save the section contents | |
7249 | so that we don't have to read them again. | |
b49e97c9 TS |
7250 | At this point we know that elf_gp is set, so we can look |
7251 | through the section contents to see if there is an | |
7252 | ODK_REGINFO structure. */ | |
7253 | ||
f0abc2a1 | 7254 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
7255 | l = contents; |
7256 | lend = contents + hdr->sh_size; | |
7257 | while (l + sizeof (Elf_External_Options) <= lend) | |
7258 | { | |
7259 | Elf_Internal_Options intopt; | |
7260 | ||
7261 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7262 | &intopt); | |
1bc8074d MR |
7263 | if (intopt.size < sizeof (Elf_External_Options)) |
7264 | { | |
4eca0228 | 7265 | _bfd_error_handler |
695344c0 | 7266 | /* xgettext:c-format */ |
2c1c9679 | 7267 | (_("%pB: warning: bad `%s' option size %u smaller than" |
63a5468a | 7268 | " its header"), |
1bc8074d MR |
7269 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); |
7270 | break; | |
7271 | } | |
b49e97c9 TS |
7272 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
7273 | { | |
7274 | bfd_byte buf[8]; | |
7275 | ||
7276 | if (bfd_seek (abfd, | |
7277 | (hdr->sh_offset | |
7278 | + (l - contents) | |
7279 | + sizeof (Elf_External_Options) | |
7280 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
7281 | SEEK_SET) != 0) | |
b34976b6 | 7282 | return FALSE; |
b49e97c9 | 7283 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7284 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 7285 | return FALSE; |
b49e97c9 TS |
7286 | } |
7287 | else if (intopt.kind == ODK_REGINFO) | |
7288 | { | |
7289 | bfd_byte buf[4]; | |
7290 | ||
7291 | if (bfd_seek (abfd, | |
7292 | (hdr->sh_offset | |
7293 | + (l - contents) | |
7294 | + sizeof (Elf_External_Options) | |
7295 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
7296 | SEEK_SET) != 0) | |
b34976b6 | 7297 | return FALSE; |
b49e97c9 | 7298 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7299 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 7300 | return FALSE; |
b49e97c9 TS |
7301 | } |
7302 | l += intopt.size; | |
7303 | } | |
7304 | } | |
7305 | ||
7306 | if (hdr->bfd_section != NULL) | |
7307 | { | |
7308 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
7309 | ||
2d0f9ad9 JM |
7310 | /* .sbss is not handled specially here because the GNU/Linux |
7311 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
7312 | changing it back to NOBITS breaks the binary. The entry in | |
7313 | _bfd_mips_elf_special_sections will ensure the correct flags | |
7314 | are set on .sbss if BFD creates it without reading it from an | |
7315 | input file, and without special handling here the flags set | |
7316 | on it in an input file will be followed. */ | |
b49e97c9 TS |
7317 | if (strcmp (name, ".sdata") == 0 |
7318 | || strcmp (name, ".lit8") == 0 | |
7319 | || strcmp (name, ".lit4") == 0) | |
fd6f9d17 | 7320 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
b49e97c9 | 7321 | else if (strcmp (name, ".srdata") == 0) |
fd6f9d17 | 7322 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; |
b49e97c9 | 7323 | else if (strcmp (name, ".compact_rel") == 0) |
fd6f9d17 | 7324 | hdr->sh_flags = 0; |
b49e97c9 TS |
7325 | else if (strcmp (name, ".rtproc") == 0) |
7326 | { | |
7327 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
7328 | { | |
7329 | unsigned int adjust; | |
7330 | ||
7331 | adjust = hdr->sh_size % hdr->sh_addralign; | |
7332 | if (adjust != 0) | |
7333 | hdr->sh_size += hdr->sh_addralign - adjust; | |
7334 | } | |
7335 | } | |
7336 | } | |
7337 | ||
b34976b6 | 7338 | return TRUE; |
b49e97c9 TS |
7339 | } |
7340 | ||
7341 | /* Handle a MIPS specific section when reading an object file. This | |
7342 | is called when elfcode.h finds a section with an unknown type. | |
7343 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
7344 | ||
7345 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
7346 | how to. */ | |
7347 | ||
b34976b6 | 7348 | bfd_boolean |
6dc132d9 L |
7349 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
7350 | Elf_Internal_Shdr *hdr, | |
7351 | const char *name, | |
7352 | int shindex) | |
b49e97c9 TS |
7353 | { |
7354 | flagword flags = 0; | |
7355 | ||
7356 | /* There ought to be a place to keep ELF backend specific flags, but | |
7357 | at the moment there isn't one. We just keep track of the | |
7358 | sections by their name, instead. Fortunately, the ABI gives | |
7359 | suggested names for all the MIPS specific sections, so we will | |
7360 | probably get away with this. */ | |
7361 | switch (hdr->sh_type) | |
7362 | { | |
7363 | case SHT_MIPS_LIBLIST: | |
7364 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 7365 | return FALSE; |
b49e97c9 TS |
7366 | break; |
7367 | case SHT_MIPS_MSYM: | |
7368 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 7369 | return FALSE; |
b49e97c9 TS |
7370 | break; |
7371 | case SHT_MIPS_CONFLICT: | |
7372 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 7373 | return FALSE; |
b49e97c9 TS |
7374 | break; |
7375 | case SHT_MIPS_GPTAB: | |
0112cd26 | 7376 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 7377 | return FALSE; |
b49e97c9 TS |
7378 | break; |
7379 | case SHT_MIPS_UCODE: | |
7380 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 7381 | return FALSE; |
b49e97c9 TS |
7382 | break; |
7383 | case SHT_MIPS_DEBUG: | |
7384 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 7385 | return FALSE; |
b49e97c9 TS |
7386 | flags = SEC_DEBUGGING; |
7387 | break; | |
7388 | case SHT_MIPS_REGINFO: | |
7389 | if (strcmp (name, ".reginfo") != 0 | |
7390 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 7391 | return FALSE; |
b49e97c9 TS |
7392 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
7393 | break; | |
7394 | case SHT_MIPS_IFACE: | |
7395 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 7396 | return FALSE; |
b49e97c9 TS |
7397 | break; |
7398 | case SHT_MIPS_CONTENT: | |
0112cd26 | 7399 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 7400 | return FALSE; |
b49e97c9 TS |
7401 | break; |
7402 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 7403 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 7404 | return FALSE; |
b49e97c9 | 7405 | break; |
351cdf24 MF |
7406 | case SHT_MIPS_ABIFLAGS: |
7407 | if (!MIPS_ELF_ABIFLAGS_SECTION_NAME_P (name)) | |
7408 | return FALSE; | |
7409 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); | |
7410 | break; | |
b49e97c9 | 7411 | case SHT_MIPS_DWARF: |
1b315056 | 7412 | if (! CONST_STRNEQ (name, ".debug_") |
07d6d2b8 | 7413 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 7414 | return FALSE; |
b49e97c9 TS |
7415 | break; |
7416 | case SHT_MIPS_SYMBOL_LIB: | |
7417 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 7418 | return FALSE; |
b49e97c9 TS |
7419 | break; |
7420 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
7421 | if (! CONST_STRNEQ (name, ".MIPS.events") |
7422 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 7423 | return FALSE; |
b49e97c9 TS |
7424 | break; |
7425 | default: | |
cc2e31b9 | 7426 | break; |
b49e97c9 TS |
7427 | } |
7428 | ||
6dc132d9 | 7429 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 7430 | return FALSE; |
b49e97c9 TS |
7431 | |
7432 | if (flags) | |
7433 | { | |
7434 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
7435 | (bfd_get_section_flags (abfd, | |
7436 | hdr->bfd_section) | |
7437 | | flags))) | |
b34976b6 | 7438 | return FALSE; |
b49e97c9 TS |
7439 | } |
7440 | ||
351cdf24 MF |
7441 | if (hdr->sh_type == SHT_MIPS_ABIFLAGS) |
7442 | { | |
7443 | Elf_External_ABIFlags_v0 ext; | |
7444 | ||
7445 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, | |
7446 | &ext, 0, sizeof ext)) | |
7447 | return FALSE; | |
7448 | bfd_mips_elf_swap_abiflags_v0_in (abfd, &ext, | |
7449 | &mips_elf_tdata (abfd)->abiflags); | |
7450 | if (mips_elf_tdata (abfd)->abiflags.version != 0) | |
7451 | return FALSE; | |
7452 | mips_elf_tdata (abfd)->abiflags_valid = TRUE; | |
7453 | } | |
7454 | ||
b49e97c9 TS |
7455 | /* FIXME: We should record sh_info for a .gptab section. */ |
7456 | ||
7457 | /* For a .reginfo section, set the gp value in the tdata information | |
7458 | from the contents of this section. We need the gp value while | |
7459 | processing relocs, so we just get it now. The .reginfo section | |
7460 | is not used in the 64-bit MIPS ELF ABI. */ | |
7461 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
7462 | { | |
7463 | Elf32_External_RegInfo ext; | |
7464 | Elf32_RegInfo s; | |
7465 | ||
9719ad41 RS |
7466 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
7467 | &ext, 0, sizeof ext)) | |
b34976b6 | 7468 | return FALSE; |
b49e97c9 TS |
7469 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
7470 | elf_gp (abfd) = s.ri_gp_value; | |
7471 | } | |
7472 | ||
7473 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
7474 | set the gp value based on what we find. We may see both | |
7475 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
7476 | they should agree. */ | |
7477 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
7478 | { | |
7479 | bfd_byte *contents, *l, *lend; | |
7480 | ||
9719ad41 | 7481 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 7482 | if (contents == NULL) |
b34976b6 | 7483 | return FALSE; |
b49e97c9 | 7484 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 7485 | 0, hdr->sh_size)) |
b49e97c9 TS |
7486 | { |
7487 | free (contents); | |
b34976b6 | 7488 | return FALSE; |
b49e97c9 TS |
7489 | } |
7490 | l = contents; | |
7491 | lend = contents + hdr->sh_size; | |
7492 | while (l + sizeof (Elf_External_Options) <= lend) | |
7493 | { | |
7494 | Elf_Internal_Options intopt; | |
7495 | ||
7496 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7497 | &intopt); | |
1bc8074d MR |
7498 | if (intopt.size < sizeof (Elf_External_Options)) |
7499 | { | |
4eca0228 | 7500 | _bfd_error_handler |
695344c0 | 7501 | /* xgettext:c-format */ |
2c1c9679 | 7502 | (_("%pB: warning: bad `%s' option size %u smaller than" |
63a5468a | 7503 | " its header"), |
1bc8074d MR |
7504 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); |
7505 | break; | |
7506 | } | |
b49e97c9 TS |
7507 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
7508 | { | |
7509 | Elf64_Internal_RegInfo intreg; | |
7510 | ||
7511 | bfd_mips_elf64_swap_reginfo_in | |
7512 | (abfd, | |
7513 | ((Elf64_External_RegInfo *) | |
7514 | (l + sizeof (Elf_External_Options))), | |
7515 | &intreg); | |
7516 | elf_gp (abfd) = intreg.ri_gp_value; | |
7517 | } | |
7518 | else if (intopt.kind == ODK_REGINFO) | |
7519 | { | |
7520 | Elf32_RegInfo intreg; | |
7521 | ||
7522 | bfd_mips_elf32_swap_reginfo_in | |
7523 | (abfd, | |
7524 | ((Elf32_External_RegInfo *) | |
7525 | (l + sizeof (Elf_External_Options))), | |
7526 | &intreg); | |
7527 | elf_gp (abfd) = intreg.ri_gp_value; | |
7528 | } | |
7529 | l += intopt.size; | |
7530 | } | |
7531 | free (contents); | |
7532 | } | |
7533 | ||
b34976b6 | 7534 | return TRUE; |
b49e97c9 TS |
7535 | } |
7536 | ||
7537 | /* Set the correct type for a MIPS ELF section. We do this by the | |
7538 | section name, which is a hack, but ought to work. This routine is | |
7539 | used by both the 32-bit and the 64-bit ABI. */ | |
7540 | ||
b34976b6 | 7541 | bfd_boolean |
9719ad41 | 7542 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 7543 | { |
0414f35b | 7544 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
7545 | |
7546 | if (strcmp (name, ".liblist") == 0) | |
7547 | { | |
7548 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 7549 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
7550 | /* The sh_link field is set in final_write_processing. */ |
7551 | } | |
7552 | else if (strcmp (name, ".conflict") == 0) | |
7553 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 7554 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
7555 | { |
7556 | hdr->sh_type = SHT_MIPS_GPTAB; | |
7557 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
7558 | /* The sh_info field is set in final_write_processing. */ | |
7559 | } | |
7560 | else if (strcmp (name, ".ucode") == 0) | |
7561 | hdr->sh_type = SHT_MIPS_UCODE; | |
7562 | else if (strcmp (name, ".mdebug") == 0) | |
7563 | { | |
7564 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 7565 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
07d6d2b8 | 7566 | entsize of 0. FIXME: Does this matter? */ |
b49e97c9 TS |
7567 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) |
7568 | hdr->sh_entsize = 0; | |
7569 | else | |
7570 | hdr->sh_entsize = 1; | |
7571 | } | |
7572 | else if (strcmp (name, ".reginfo") == 0) | |
7573 | { | |
7574 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 7575 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
07d6d2b8 | 7576 | entsize of 0x18. FIXME: Does this matter? */ |
b49e97c9 TS |
7577 | if (SGI_COMPAT (abfd)) |
7578 | { | |
7579 | if ((abfd->flags & DYNAMIC) != 0) | |
7580 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7581 | else | |
7582 | hdr->sh_entsize = 1; | |
7583 | } | |
7584 | else | |
7585 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7586 | } | |
7587 | else if (SGI_COMPAT (abfd) | |
7588 | && (strcmp (name, ".hash") == 0 | |
7589 | || strcmp (name, ".dynamic") == 0 | |
7590 | || strcmp (name, ".dynstr") == 0)) | |
7591 | { | |
7592 | if (SGI_COMPAT (abfd)) | |
7593 | hdr->sh_entsize = 0; | |
7594 | #if 0 | |
8dc1a139 | 7595 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
7596 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
7597 | #endif | |
7598 | } | |
7599 | else if (strcmp (name, ".got") == 0 | |
7600 | || strcmp (name, ".srdata") == 0 | |
7601 | || strcmp (name, ".sdata") == 0 | |
7602 | || strcmp (name, ".sbss") == 0 | |
7603 | || strcmp (name, ".lit4") == 0 | |
7604 | || strcmp (name, ".lit8") == 0) | |
7605 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
7606 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
7607 | { | |
7608 | hdr->sh_type = SHT_MIPS_IFACE; | |
7609 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7610 | } | |
0112cd26 | 7611 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
7612 | { |
7613 | hdr->sh_type = SHT_MIPS_CONTENT; | |
7614 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7615 | /* The sh_info field is set in final_write_processing. */ | |
7616 | } | |
cc2e31b9 | 7617 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
7618 | { |
7619 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
7620 | hdr->sh_entsize = 1; | |
7621 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7622 | } | |
351cdf24 MF |
7623 | else if (CONST_STRNEQ (name, ".MIPS.abiflags")) |
7624 | { | |
7625 | hdr->sh_type = SHT_MIPS_ABIFLAGS; | |
7626 | hdr->sh_entsize = sizeof (Elf_External_ABIFlags_v0); | |
7627 | } | |
1b315056 | 7628 | else if (CONST_STRNEQ (name, ".debug_") |
07d6d2b8 | 7629 | || CONST_STRNEQ (name, ".zdebug_")) |
b5482f21 NC |
7630 | { |
7631 | hdr->sh_type = SHT_MIPS_DWARF; | |
7632 | ||
7633 | /* Irix facilities such as libexc expect a single .debug_frame | |
7634 | per executable, the system ones have NOSTRIP set and the linker | |
7635 | doesn't merge sections with different flags so ... */ | |
7636 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
7637 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7638 | } | |
b49e97c9 TS |
7639 | else if (strcmp (name, ".MIPS.symlib") == 0) |
7640 | { | |
7641 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
7642 | /* The sh_link and sh_info fields are set in | |
07d6d2b8 | 7643 | final_write_processing. */ |
b49e97c9 | 7644 | } |
0112cd26 NC |
7645 | else if (CONST_STRNEQ (name, ".MIPS.events") |
7646 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
7647 | { |
7648 | hdr->sh_type = SHT_MIPS_EVENTS; | |
7649 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7650 | /* The sh_link field is set in final_write_processing. */ | |
7651 | } | |
7652 | else if (strcmp (name, ".msym") == 0) | |
7653 | { | |
7654 | hdr->sh_type = SHT_MIPS_MSYM; | |
7655 | hdr->sh_flags |= SHF_ALLOC; | |
7656 | hdr->sh_entsize = 8; | |
7657 | } | |
7658 | ||
7a79a000 TS |
7659 | /* The generic elf_fake_sections will set up REL_HDR using the default |
7660 | kind of relocations. We used to set up a second header for the | |
7661 | non-default kind of relocations here, but only NewABI would use | |
7662 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
7663 | Thus we create those header only on demand now. */ | |
b49e97c9 | 7664 | |
b34976b6 | 7665 | return TRUE; |
b49e97c9 TS |
7666 | } |
7667 | ||
7668 | /* Given a BFD section, try to locate the corresponding ELF section | |
7669 | index. This is used by both the 32-bit and the 64-bit ABI. | |
7670 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
7671 | but for non-PIC objects we will certainly want support for at least | |
7672 | the .scommon section. */ | |
7673 | ||
b34976b6 | 7674 | bfd_boolean |
9719ad41 RS |
7675 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
7676 | asection *sec, int *retval) | |
b49e97c9 TS |
7677 | { |
7678 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
7679 | { | |
7680 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 7681 | return TRUE; |
b49e97c9 TS |
7682 | } |
7683 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
7684 | { | |
7685 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 7686 | return TRUE; |
b49e97c9 | 7687 | } |
b34976b6 | 7688 | return FALSE; |
b49e97c9 TS |
7689 | } |
7690 | \f | |
7691 | /* Hook called by the linker routine which adds symbols from an object | |
7692 | file. We must handle the special MIPS section numbers here. */ | |
7693 | ||
b34976b6 | 7694 | bfd_boolean |
9719ad41 | 7695 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 7696 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
7697 | flagword *flagsp ATTRIBUTE_UNUSED, |
7698 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
7699 | { |
7700 | if (SGI_COMPAT (abfd) | |
7701 | && (abfd->flags & DYNAMIC) != 0 | |
7702 | && strcmp (*namep, "_rld_new_interface") == 0) | |
7703 | { | |
8dc1a139 | 7704 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 7705 | *namep = NULL; |
b34976b6 | 7706 | return TRUE; |
b49e97c9 TS |
7707 | } |
7708 | ||
eedecc07 DD |
7709 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
7710 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7711 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7712 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7713 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7714 | is not done for them. */ | |
7715 | if (!NEWABI_P(abfd) | |
7716 | && (sym->st_shndx == SHN_ABS) | |
7717 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7718 | { | |
7719 | *namep = NULL; | |
7720 | return TRUE; | |
7721 | } | |
7722 | ||
b49e97c9 TS |
7723 | switch (sym->st_shndx) |
7724 | { | |
7725 | case SHN_COMMON: | |
7726 | /* Common symbols less than the GP size are automatically | |
7727 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7728 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7729 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7730 | || IRIX_COMPAT (abfd) == ict_irix6) |
7731 | break; | |
7732 | /* Fall through. */ | |
7733 | case SHN_MIPS_SCOMMON: | |
7734 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
7735 | (*secp)->flags |= SEC_IS_COMMON; | |
7736 | *valp = sym->st_size; | |
7737 | break; | |
7738 | ||
7739 | case SHN_MIPS_TEXT: | |
7740 | /* This section is used in a shared object. */ | |
698600e4 | 7741 | if (mips_elf_tdata (abfd)->elf_text_section == NULL) |
b49e97c9 TS |
7742 | { |
7743 | asymbol *elf_text_symbol; | |
7744 | asection *elf_text_section; | |
7745 | bfd_size_type amt = sizeof (asection); | |
7746 | ||
7747 | elf_text_section = bfd_zalloc (abfd, amt); | |
7748 | if (elf_text_section == NULL) | |
b34976b6 | 7749 | return FALSE; |
b49e97c9 TS |
7750 | |
7751 | amt = sizeof (asymbol); | |
7752 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7753 | if (elf_text_symbol == NULL) | |
b34976b6 | 7754 | return FALSE; |
b49e97c9 TS |
7755 | |
7756 | /* Initialize the section. */ | |
7757 | ||
698600e4 AM |
7758 | mips_elf_tdata (abfd)->elf_text_section = elf_text_section; |
7759 | mips_elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
b49e97c9 TS |
7760 | |
7761 | elf_text_section->symbol = elf_text_symbol; | |
698600e4 | 7762 | elf_text_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_text_symbol; |
b49e97c9 TS |
7763 | |
7764 | elf_text_section->name = ".text"; | |
7765 | elf_text_section->flags = SEC_NO_FLAGS; | |
7766 | elf_text_section->output_section = NULL; | |
7767 | elf_text_section->owner = abfd; | |
7768 | elf_text_symbol->name = ".text"; | |
7769 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7770 | elf_text_symbol->section = elf_text_section; | |
7771 | } | |
7772 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7773 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7774 | so I took it out. */ | |
698600e4 | 7775 | *secp = mips_elf_tdata (abfd)->elf_text_section; |
b49e97c9 TS |
7776 | break; |
7777 | ||
7778 | case SHN_MIPS_ACOMMON: | |
7779 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7780 | case SHN_MIPS_DATA: | |
7781 | /* This section is used in a shared object. */ | |
698600e4 | 7782 | if (mips_elf_tdata (abfd)->elf_data_section == NULL) |
b49e97c9 TS |
7783 | { |
7784 | asymbol *elf_data_symbol; | |
7785 | asection *elf_data_section; | |
7786 | bfd_size_type amt = sizeof (asection); | |
7787 | ||
7788 | elf_data_section = bfd_zalloc (abfd, amt); | |
7789 | if (elf_data_section == NULL) | |
b34976b6 | 7790 | return FALSE; |
b49e97c9 TS |
7791 | |
7792 | amt = sizeof (asymbol); | |
7793 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7794 | if (elf_data_symbol == NULL) | |
b34976b6 | 7795 | return FALSE; |
b49e97c9 TS |
7796 | |
7797 | /* Initialize the section. */ | |
7798 | ||
698600e4 AM |
7799 | mips_elf_tdata (abfd)->elf_data_section = elf_data_section; |
7800 | mips_elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
b49e97c9 TS |
7801 | |
7802 | elf_data_section->symbol = elf_data_symbol; | |
698600e4 | 7803 | elf_data_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_data_symbol; |
b49e97c9 TS |
7804 | |
7805 | elf_data_section->name = ".data"; | |
7806 | elf_data_section->flags = SEC_NO_FLAGS; | |
7807 | elf_data_section->output_section = NULL; | |
7808 | elf_data_section->owner = abfd; | |
7809 | elf_data_symbol->name = ".data"; | |
7810 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7811 | elf_data_symbol->section = elf_data_section; | |
7812 | } | |
7813 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7814 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7815 | so I took it out. */ | |
698600e4 | 7816 | *secp = mips_elf_tdata (abfd)->elf_data_section; |
b49e97c9 TS |
7817 | break; |
7818 | ||
7819 | case SHN_MIPS_SUNDEFINED: | |
7820 | *secp = bfd_und_section_ptr; | |
7821 | break; | |
7822 | } | |
7823 | ||
7824 | if (SGI_COMPAT (abfd) | |
0e1862bb | 7825 | && ! bfd_link_pic (info) |
f13a99db | 7826 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7827 | && strcmp (*namep, "__rld_obj_head") == 0) |
7828 | { | |
7829 | struct elf_link_hash_entry *h; | |
14a793b2 | 7830 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7831 | |
7832 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7833 | bh = NULL; |
b49e97c9 | 7834 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 7835 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 7836 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 7837 | return FALSE; |
14a793b2 AM |
7838 | |
7839 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7840 | h->non_elf = 0; |
7841 | h->def_regular = 1; | |
b49e97c9 TS |
7842 | h->type = STT_OBJECT; |
7843 | ||
c152c796 | 7844 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7845 | return FALSE; |
b49e97c9 | 7846 | |
b34976b6 | 7847 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b4082c70 | 7848 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7849 | } |
7850 | ||
7851 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7852 | odd. This will cause something like .word SYM to come up with | |
7853 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7854 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7855 | ++*valp; |
7856 | ||
b34976b6 | 7857 | return TRUE; |
b49e97c9 TS |
7858 | } |
7859 | ||
7860 | /* This hook function is called before the linker writes out a global | |
7861 | symbol. We mark symbols as small common if appropriate. This is | |
7862 | also where we undo the increment of the value for a mips16 symbol. */ | |
7863 | ||
6e0b88f1 | 7864 | int |
9719ad41 RS |
7865 | _bfd_mips_elf_link_output_symbol_hook |
7866 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7867 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7868 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7869 | { |
7870 | /* If we see a common symbol, which implies a relocatable link, then | |
7871 | if a symbol was small common in an input file, mark it as small | |
7872 | common in the output file. */ | |
7873 | if (sym->st_shndx == SHN_COMMON | |
7874 | && strcmp (input_sec->name, ".scommon") == 0) | |
7875 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7876 | ||
df58fc94 | 7877 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7878 | sym->st_value &= ~1; |
b49e97c9 | 7879 | |
6e0b88f1 | 7880 | return 1; |
b49e97c9 TS |
7881 | } |
7882 | \f | |
7883 | /* Functions for the dynamic linker. */ | |
7884 | ||
7885 | /* Create dynamic sections when linking against a dynamic object. */ | |
7886 | ||
b34976b6 | 7887 | bfd_boolean |
9719ad41 | 7888 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
7889 | { |
7890 | struct elf_link_hash_entry *h; | |
14a793b2 | 7891 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7892 | flagword flags; |
7893 | register asection *s; | |
7894 | const char * const *namep; | |
0a44bf69 | 7895 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7896 | |
0a44bf69 | 7897 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7898 | BFD_ASSERT (htab != NULL); |
7899 | ||
b49e97c9 TS |
7900 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
7901 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7902 | ||
0a44bf69 RS |
7903 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
7904 | EABI doesn't. */ | |
7905 | if (!htab->is_vxworks) | |
b49e97c9 | 7906 | { |
3d4d4302 | 7907 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
7908 | if (s != NULL) |
7909 | { | |
7910 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7911 | return FALSE; | |
7912 | } | |
b49e97c9 TS |
7913 | } |
7914 | ||
7915 | /* We need to create .got section. */ | |
23cc69b6 | 7916 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
7917 | return FALSE; |
7918 | ||
0a44bf69 | 7919 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 7920 | return FALSE; |
b49e97c9 | 7921 | |
b49e97c9 | 7922 | /* Create .stub section. */ |
3d4d4302 AM |
7923 | s = bfd_make_section_anyway_with_flags (abfd, |
7924 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
7925 | flags | SEC_CODE); | |
4e41d0d7 RS |
7926 | if (s == NULL |
7927 | || ! bfd_set_section_alignment (abfd, s, | |
7928 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
7929 | return FALSE; | |
7930 | htab->sstubs = s; | |
b49e97c9 | 7931 | |
e6aea42d | 7932 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
0e1862bb | 7933 | && bfd_link_executable (info) |
3d4d4302 | 7934 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 7935 | { |
3d4d4302 AM |
7936 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
7937 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 7938 | if (s == NULL |
b49e97c9 TS |
7939 | || ! bfd_set_section_alignment (abfd, s, |
7940 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 7941 | return FALSE; |
b49e97c9 TS |
7942 | } |
7943 | ||
7944 | /* On IRIX5, we adjust add some additional symbols and change the | |
7945 | alignments of several sections. There is no ABI documentation | |
7946 | indicating that this is necessary on IRIX6, nor any evidence that | |
7947 | the linker takes such action. */ | |
7948 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
7949 | { | |
7950 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7951 | { | |
14a793b2 | 7952 | bh = NULL; |
b49e97c9 | 7953 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
7954 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
7955 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7956 | return FALSE; |
14a793b2 AM |
7957 | |
7958 | h = (struct elf_link_hash_entry *) bh; | |
12f09816 | 7959 | h->mark = 1; |
f5385ebf AM |
7960 | h->non_elf = 0; |
7961 | h->def_regular = 1; | |
b49e97c9 TS |
7962 | h->type = STT_SECTION; |
7963 | ||
c152c796 | 7964 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7965 | return FALSE; |
b49e97c9 TS |
7966 | } |
7967 | ||
7968 | /* We need to create a .compact_rel section. */ | |
7969 | if (SGI_COMPAT (abfd)) | |
7970 | { | |
7971 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 7972 | return FALSE; |
b49e97c9 TS |
7973 | } |
7974 | ||
44c410de | 7975 | /* Change alignments of some sections. */ |
3d4d4302 | 7976 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 7977 | if (s != NULL) |
a253d456 NC |
7978 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7979 | ||
3d4d4302 | 7980 | s = bfd_get_linker_section (abfd, ".dynsym"); |
b49e97c9 | 7981 | if (s != NULL) |
a253d456 NC |
7982 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7983 | ||
3d4d4302 | 7984 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 7985 | if (s != NULL) |
a253d456 NC |
7986 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7987 | ||
3d4d4302 | 7988 | /* ??? */ |
b49e97c9 TS |
7989 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7990 | if (s != NULL) | |
a253d456 NC |
7991 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7992 | ||
3d4d4302 | 7993 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 7994 | if (s != NULL) |
a253d456 | 7995 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7996 | } |
7997 | ||
0e1862bb | 7998 | if (bfd_link_executable (info)) |
b49e97c9 | 7999 | { |
14a793b2 AM |
8000 | const char *name; |
8001 | ||
8002 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
8003 | bh = NULL; | |
8004 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
8005 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
8006 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 8007 | return FALSE; |
14a793b2 AM |
8008 | |
8009 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
8010 | h->non_elf = 0; |
8011 | h->def_regular = 1; | |
b49e97c9 TS |
8012 | h->type = STT_SECTION; |
8013 | ||
c152c796 | 8014 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8015 | return FALSE; |
b49e97c9 TS |
8016 | |
8017 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
8018 | { | |
8019 | /* __rld_map is a four byte word located in the .data section | |
8020 | and is filled in by the rtld to contain a pointer to | |
8021 | the _r_debug structure. Its symbol value will be set in | |
8022 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 8023 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 8024 | BFD_ASSERT (s != NULL); |
14a793b2 | 8025 | |
0abfb97a L |
8026 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
8027 | bh = NULL; | |
8028 | if (!(_bfd_generic_link_add_one_symbol | |
8029 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
8030 | get_elf_backend_data (abfd)->collect, &bh))) | |
8031 | return FALSE; | |
b49e97c9 | 8032 | |
0abfb97a L |
8033 | h = (struct elf_link_hash_entry *) bh; |
8034 | h->non_elf = 0; | |
8035 | h->def_regular = 1; | |
8036 | h->type = STT_OBJECT; | |
8037 | ||
8038 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8039 | return FALSE; | |
b4082c70 | 8040 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
8041 | } |
8042 | } | |
8043 | ||
861fb55a | 8044 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
c164a95d | 8045 | Also, on VxWorks, create the _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
861fb55a DJ |
8046 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
8047 | return FALSE; | |
8048 | ||
1bbce132 MR |
8049 | /* Do the usual VxWorks handling. */ |
8050 | if (htab->is_vxworks | |
8051 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
8052 | return FALSE; | |
0a44bf69 | 8053 | |
b34976b6 | 8054 | return TRUE; |
b49e97c9 TS |
8055 | } |
8056 | \f | |
c224138d RS |
8057 | /* Return true if relocation REL against section SEC is a REL rather than |
8058 | RELA relocation. RELOCS is the first relocation in the section and | |
8059 | ABFD is the bfd that contains SEC. */ | |
8060 | ||
8061 | static bfd_boolean | |
8062 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
8063 | const Elf_Internal_Rela *relocs, | |
8064 | const Elf_Internal_Rela *rel) | |
8065 | { | |
8066 | Elf_Internal_Shdr *rel_hdr; | |
8067 | const struct elf_backend_data *bed; | |
8068 | ||
d4730f92 BS |
8069 | /* To determine which flavor of relocation this is, we depend on the |
8070 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
8071 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
8072 | if (rel_hdr == NULL) | |
8073 | return FALSE; | |
c224138d | 8074 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
8075 | return ((size_t) (rel - relocs) |
8076 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
8077 | } |
8078 | ||
8079 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
8080 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
8081 | of the section that REL is against. */ | |
8082 | ||
8083 | static bfd_vma | |
8084 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
8085 | reloc_howto_type *howto, bfd_byte *contents) | |
8086 | { | |
8087 | bfd_byte *location; | |
8088 | unsigned int r_type; | |
8089 | bfd_vma addend; | |
17c6c9d9 | 8090 | bfd_vma bytes; |
c224138d RS |
8091 | |
8092 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
8093 | location = contents + rel->r_offset; | |
8094 | ||
8095 | /* Get the addend, which is stored in the input file. */ | |
df58fc94 | 8096 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, FALSE, location); |
17c6c9d9 | 8097 | bytes = mips_elf_obtain_contents (howto, rel, abfd, contents); |
df58fc94 | 8098 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, FALSE, location); |
c224138d | 8099 | |
17c6c9d9 MR |
8100 | addend = bytes & howto->src_mask; |
8101 | ||
8102 | /* Shift is 2, unusually, for microMIPS JALX. Adjust the addend | |
8103 | accordingly. */ | |
8104 | if (r_type == R_MICROMIPS_26_S1 && (bytes >> 26) == 0x3c) | |
8105 | addend <<= 1; | |
8106 | ||
8107 | return addend; | |
c224138d RS |
8108 | } |
8109 | ||
8110 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
8111 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
8112 | and update *ADDEND with the final addend. Return true on success | |
8113 | or false if the LO16 could not be found. RELEND is the exclusive | |
8114 | upper bound on the relocations for REL's section. */ | |
8115 | ||
8116 | static bfd_boolean | |
8117 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
8118 | const Elf_Internal_Rela *rel, | |
8119 | const Elf_Internal_Rela *relend, | |
8120 | bfd_byte *contents, bfd_vma *addend) | |
8121 | { | |
8122 | unsigned int r_type, lo16_type; | |
8123 | const Elf_Internal_Rela *lo16_relocation; | |
8124 | reloc_howto_type *lo16_howto; | |
8125 | bfd_vma l; | |
8126 | ||
8127 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 8128 | if (mips16_reloc_p (r_type)) |
c224138d | 8129 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
8130 | else if (micromips_reloc_p (r_type)) |
8131 | lo16_type = R_MICROMIPS_LO16; | |
7361da2c AB |
8132 | else if (r_type == R_MIPS_PCHI16) |
8133 | lo16_type = R_MIPS_PCLO16; | |
c224138d RS |
8134 | else |
8135 | lo16_type = R_MIPS_LO16; | |
8136 | ||
8137 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
8138 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
8139 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
8140 | LO16 value.) | |
8141 | ||
8142 | Scan ahead to find a matching LO16 relocation. | |
8143 | ||
8144 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
8145 | be immediately following. However, for the IRIX6 ABI, the next | |
8146 | relocation may be a composed relocation consisting of several | |
8147 | relocations for the same address. In that case, the R_MIPS_LO16 | |
8148 | relocation may occur as one of these. We permit a similar | |
8149 | extension in general, as that is useful for GCC. | |
8150 | ||
8151 | In some cases GCC dead code elimination removes the LO16 but keeps | |
8152 | the corresponding HI16. This is strictly speaking a violation of | |
8153 | the ABI but not immediately harmful. */ | |
8154 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
8155 | if (lo16_relocation == NULL) | |
8156 | return FALSE; | |
8157 | ||
8158 | /* Obtain the addend kept there. */ | |
8159 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
8160 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
8161 | ||
8162 | l <<= lo16_howto->rightshift; | |
8163 | l = _bfd_mips_elf_sign_extend (l, 16); | |
8164 | ||
8165 | *addend <<= 16; | |
8166 | *addend += l; | |
8167 | return TRUE; | |
8168 | } | |
8169 | ||
8170 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
8171 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
8172 | already holds the contents if it is nonull on entry. */ | |
8173 | ||
8174 | static bfd_boolean | |
8175 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
8176 | { | |
8177 | if (*contents) | |
8178 | return TRUE; | |
8179 | ||
8180 | /* Get cached copy if it exists. */ | |
8181 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8182 | { | |
8183 | *contents = elf_section_data (sec)->this_hdr.contents; | |
8184 | return TRUE; | |
8185 | } | |
8186 | ||
8187 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
8188 | } | |
8189 | ||
1bbce132 MR |
8190 | /* Make a new PLT record to keep internal data. */ |
8191 | ||
8192 | static struct plt_entry * | |
8193 | mips_elf_make_plt_record (bfd *abfd) | |
8194 | { | |
8195 | struct plt_entry *entry; | |
8196 | ||
8197 | entry = bfd_zalloc (abfd, sizeof (*entry)); | |
8198 | if (entry == NULL) | |
8199 | return NULL; | |
8200 | ||
8201 | entry->stub_offset = MINUS_ONE; | |
8202 | entry->mips_offset = MINUS_ONE; | |
8203 | entry->comp_offset = MINUS_ONE; | |
8204 | entry->gotplt_index = MINUS_ONE; | |
8205 | return entry; | |
8206 | } | |
8207 | ||
47275900 MR |
8208 | /* Define the special `__gnu_absolute_zero' symbol. We only need this |
8209 | for PIC code, as otherwise there is no load-time relocation involved | |
8210 | and local GOT entries whose value is zero at static link time will | |
8211 | retain their value at load time. */ | |
8212 | ||
8213 | static bfd_boolean | |
8214 | mips_elf_define_absolute_zero (bfd *abfd, struct bfd_link_info *info, | |
8215 | struct mips_elf_link_hash_table *htab, | |
8216 | unsigned int r_type) | |
8217 | { | |
8218 | union | |
8219 | { | |
8220 | struct elf_link_hash_entry *eh; | |
8221 | struct bfd_link_hash_entry *bh; | |
8222 | } | |
8223 | hzero; | |
8224 | ||
8225 | BFD_ASSERT (!htab->use_absolute_zero); | |
8226 | BFD_ASSERT (bfd_link_pic (info)); | |
8227 | ||
8228 | hzero.bh = NULL; | |
8229 | if (!_bfd_generic_link_add_one_symbol (info, abfd, "__gnu_absolute_zero", | |
8230 | BSF_GLOBAL, bfd_abs_section_ptr, 0, | |
8231 | NULL, FALSE, FALSE, &hzero.bh)) | |
8232 | return FALSE; | |
8233 | ||
8234 | BFD_ASSERT (hzero.bh != NULL); | |
8235 | hzero.eh->size = 0; | |
8236 | hzero.eh->type = STT_NOTYPE; | |
8237 | hzero.eh->other = STV_PROTECTED; | |
8238 | hzero.eh->def_regular = 1; | |
8239 | hzero.eh->non_elf = 0; | |
8240 | ||
8241 | if (!mips_elf_record_global_got_symbol (hzero.eh, abfd, info, TRUE, r_type)) | |
8242 | return FALSE; | |
8243 | ||
8244 | htab->use_absolute_zero = TRUE; | |
8245 | ||
8246 | return TRUE; | |
8247 | } | |
8248 | ||
b49e97c9 | 8249 | /* Look through the relocs for a section during the first phase, and |
1bbce132 MR |
8250 | allocate space in the global offset table and record the need for |
8251 | standard MIPS and compressed procedure linkage table entries. */ | |
b49e97c9 | 8252 | |
b34976b6 | 8253 | bfd_boolean |
9719ad41 RS |
8254 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
8255 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
8256 | { |
8257 | const char *name; | |
8258 | bfd *dynobj; | |
8259 | Elf_Internal_Shdr *symtab_hdr; | |
8260 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
8261 | size_t extsymoff; |
8262 | const Elf_Internal_Rela *rel; | |
8263 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 8264 | asection *sreloc; |
9c5bfbb7 | 8265 | const struct elf_backend_data *bed; |
0a44bf69 | 8266 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
8267 | bfd_byte *contents; |
8268 | bfd_vma addend; | |
8269 | reloc_howto_type *howto; | |
b49e97c9 | 8270 | |
0e1862bb | 8271 | if (bfd_link_relocatable (info)) |
b34976b6 | 8272 | return TRUE; |
b49e97c9 | 8273 | |
0a44bf69 | 8274 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8275 | BFD_ASSERT (htab != NULL); |
8276 | ||
b49e97c9 TS |
8277 | dynobj = elf_hash_table (info)->dynobj; |
8278 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8279 | sym_hashes = elf_sym_hashes (abfd); | |
8280 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8281 | ||
738e5348 | 8282 | bed = get_elf_backend_data (abfd); |
056bafd4 | 8283 | rel_end = relocs + sec->reloc_count; |
738e5348 | 8284 | |
b49e97c9 TS |
8285 | /* Check for the mips16 stub sections. */ |
8286 | ||
8287 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 8288 | if (FN_STUB_P (name)) |
b49e97c9 TS |
8289 | { |
8290 | unsigned long r_symndx; | |
8291 | ||
8292 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8293 | this is for. */ |
b49e97c9 | 8294 | |
cb4437b8 | 8295 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8296 | if (r_symndx == 0) |
8297 | { | |
4eca0228 | 8298 | _bfd_error_handler |
695344c0 | 8299 | /* xgettext:c-format */ |
2c1c9679 | 8300 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8301 | " stub section `%s'"), |
8302 | abfd, name); | |
8303 | bfd_set_error (bfd_error_bad_value); | |
8304 | return FALSE; | |
8305 | } | |
b49e97c9 TS |
8306 | |
8307 | if (r_symndx < extsymoff | |
8308 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8309 | { | |
8310 | asection *o; | |
8311 | ||
8312 | /* This stub is for a local symbol. This stub will only be | |
07d6d2b8 AM |
8313 | needed if there is some relocation in this BFD, other |
8314 | than a 16 bit function call, which refers to this symbol. */ | |
b49e97c9 TS |
8315 | for (o = abfd->sections; o != NULL; o = o->next) |
8316 | { | |
8317 | Elf_Internal_Rela *sec_relocs; | |
8318 | const Elf_Internal_Rela *r, *rend; | |
8319 | ||
8320 | /* We can ignore stub sections when looking for relocs. */ | |
8321 | if ((o->flags & SEC_RELOC) == 0 | |
8322 | || o->reloc_count == 0 | |
738e5348 | 8323 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
8324 | continue; |
8325 | ||
45d6a902 | 8326 | sec_relocs |
9719ad41 | 8327 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 8328 | info->keep_memory); |
b49e97c9 | 8329 | if (sec_relocs == NULL) |
b34976b6 | 8330 | return FALSE; |
b49e97c9 TS |
8331 | |
8332 | rend = sec_relocs + o->reloc_count; | |
8333 | for (r = sec_relocs; r < rend; r++) | |
8334 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 8335 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
8336 | break; |
8337 | ||
6cdc0ccc | 8338 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
8339 | free (sec_relocs); |
8340 | ||
8341 | if (r < rend) | |
8342 | break; | |
8343 | } | |
8344 | ||
8345 | if (o == NULL) | |
8346 | { | |
8347 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8348 | not need it. Since this function is called before |
8349 | the linker maps input sections to output sections, we | |
8350 | can easily discard it by setting the SEC_EXCLUDE | |
8351 | flag. */ | |
b49e97c9 | 8352 | sec->flags |= SEC_EXCLUDE; |
b34976b6 | 8353 | return TRUE; |
b49e97c9 TS |
8354 | } |
8355 | ||
8356 | /* Record this stub in an array of local symbol stubs for | |
07d6d2b8 | 8357 | this BFD. */ |
698600e4 | 8358 | if (mips_elf_tdata (abfd)->local_stubs == NULL) |
b49e97c9 TS |
8359 | { |
8360 | unsigned long symcount; | |
8361 | asection **n; | |
8362 | bfd_size_type amt; | |
8363 | ||
8364 | if (elf_bad_symtab (abfd)) | |
8365 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8366 | else | |
8367 | symcount = symtab_hdr->sh_info; | |
8368 | amt = symcount * sizeof (asection *); | |
9719ad41 | 8369 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 8370 | if (n == NULL) |
b34976b6 | 8371 | return FALSE; |
698600e4 | 8372 | mips_elf_tdata (abfd)->local_stubs = n; |
b49e97c9 TS |
8373 | } |
8374 | ||
b9d58d71 | 8375 | sec->flags |= SEC_KEEP; |
698600e4 | 8376 | mips_elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
b49e97c9 TS |
8377 | |
8378 | /* We don't need to set mips16_stubs_seen in this case. | |
07d6d2b8 AM |
8379 | That flag is used to see whether we need to look through |
8380 | the global symbol table for stubs. We don't need to set | |
8381 | it here, because we just have a local stub. */ | |
b49e97c9 TS |
8382 | } |
8383 | else | |
8384 | { | |
8385 | struct mips_elf_link_hash_entry *h; | |
8386 | ||
8387 | h = ((struct mips_elf_link_hash_entry *) | |
8388 | sym_hashes[r_symndx - extsymoff]); | |
8389 | ||
973a3492 L |
8390 | while (h->root.root.type == bfd_link_hash_indirect |
8391 | || h->root.root.type == bfd_link_hash_warning) | |
8392 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
8393 | ||
b49e97c9 TS |
8394 | /* H is the symbol this stub is for. */ |
8395 | ||
b9d58d71 TS |
8396 | /* If we already have an appropriate stub for this function, we |
8397 | don't need another one, so we can discard this one. Since | |
8398 | this function is called before the linker maps input sections | |
8399 | to output sections, we can easily discard it by setting the | |
8400 | SEC_EXCLUDE flag. */ | |
8401 | if (h->fn_stub != NULL) | |
8402 | { | |
8403 | sec->flags |= SEC_EXCLUDE; | |
8404 | return TRUE; | |
8405 | } | |
8406 | ||
8407 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 8408 | h->fn_stub = sec; |
b34976b6 | 8409 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
8410 | } |
8411 | } | |
b9d58d71 | 8412 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
8413 | { |
8414 | unsigned long r_symndx; | |
8415 | struct mips_elf_link_hash_entry *h; | |
8416 | asection **loc; | |
8417 | ||
8418 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8419 | this is for. */ |
b49e97c9 | 8420 | |
cb4437b8 | 8421 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8422 | if (r_symndx == 0) |
8423 | { | |
4eca0228 | 8424 | _bfd_error_handler |
695344c0 | 8425 | /* xgettext:c-format */ |
2c1c9679 | 8426 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8427 | " stub section `%s'"), |
8428 | abfd, name); | |
8429 | bfd_set_error (bfd_error_bad_value); | |
8430 | return FALSE; | |
8431 | } | |
b49e97c9 TS |
8432 | |
8433 | if (r_symndx < extsymoff | |
8434 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8435 | { | |
b9d58d71 | 8436 | asection *o; |
b49e97c9 | 8437 | |
b9d58d71 | 8438 | /* This stub is for a local symbol. This stub will only be |
07d6d2b8 AM |
8439 | needed if there is some relocation (R_MIPS16_26) in this BFD |
8440 | that refers to this symbol. */ | |
b9d58d71 TS |
8441 | for (o = abfd->sections; o != NULL; o = o->next) |
8442 | { | |
8443 | Elf_Internal_Rela *sec_relocs; | |
8444 | const Elf_Internal_Rela *r, *rend; | |
8445 | ||
8446 | /* We can ignore stub sections when looking for relocs. */ | |
8447 | if ((o->flags & SEC_RELOC) == 0 | |
8448 | || o->reloc_count == 0 | |
738e5348 | 8449 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
8450 | continue; |
8451 | ||
8452 | sec_relocs | |
8453 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
8454 | info->keep_memory); | |
8455 | if (sec_relocs == NULL) | |
8456 | return FALSE; | |
8457 | ||
8458 | rend = sec_relocs + o->reloc_count; | |
8459 | for (r = sec_relocs; r < rend; r++) | |
8460 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
8461 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
8462 | break; | |
8463 | ||
8464 | if (elf_section_data (o)->relocs != sec_relocs) | |
8465 | free (sec_relocs); | |
8466 | ||
8467 | if (r < rend) | |
8468 | break; | |
8469 | } | |
8470 | ||
8471 | if (o == NULL) | |
8472 | { | |
8473 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8474 | not need it. Since this function is called before |
8475 | the linker maps input sections to output sections, we | |
8476 | can easily discard it by setting the SEC_EXCLUDE | |
8477 | flag. */ | |
b9d58d71 TS |
8478 | sec->flags |= SEC_EXCLUDE; |
8479 | return TRUE; | |
8480 | } | |
8481 | ||
8482 | /* Record this stub in an array of local symbol call_stubs for | |
07d6d2b8 | 8483 | this BFD. */ |
698600e4 | 8484 | if (mips_elf_tdata (abfd)->local_call_stubs == NULL) |
b9d58d71 TS |
8485 | { |
8486 | unsigned long symcount; | |
8487 | asection **n; | |
8488 | bfd_size_type amt; | |
8489 | ||
8490 | if (elf_bad_symtab (abfd)) | |
8491 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8492 | else | |
8493 | symcount = symtab_hdr->sh_info; | |
8494 | amt = symcount * sizeof (asection *); | |
8495 | n = bfd_zalloc (abfd, amt); | |
8496 | if (n == NULL) | |
8497 | return FALSE; | |
698600e4 | 8498 | mips_elf_tdata (abfd)->local_call_stubs = n; |
b9d58d71 | 8499 | } |
b49e97c9 | 8500 | |
b9d58d71 | 8501 | sec->flags |= SEC_KEEP; |
698600e4 | 8502 | mips_elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; |
b49e97c9 | 8503 | |
b9d58d71 | 8504 | /* We don't need to set mips16_stubs_seen in this case. |
07d6d2b8 AM |
8505 | That flag is used to see whether we need to look through |
8506 | the global symbol table for stubs. We don't need to set | |
8507 | it here, because we just have a local stub. */ | |
b9d58d71 | 8508 | } |
b49e97c9 | 8509 | else |
b49e97c9 | 8510 | { |
b9d58d71 TS |
8511 | h = ((struct mips_elf_link_hash_entry *) |
8512 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 8513 | |
b9d58d71 | 8514 | /* H is the symbol this stub is for. */ |
68ffbac6 | 8515 | |
b9d58d71 TS |
8516 | if (CALL_FP_STUB_P (name)) |
8517 | loc = &h->call_fp_stub; | |
8518 | else | |
8519 | loc = &h->call_stub; | |
68ffbac6 | 8520 | |
b9d58d71 TS |
8521 | /* If we already have an appropriate stub for this function, we |
8522 | don't need another one, so we can discard this one. Since | |
8523 | this function is called before the linker maps input sections | |
8524 | to output sections, we can easily discard it by setting the | |
8525 | SEC_EXCLUDE flag. */ | |
8526 | if (*loc != NULL) | |
8527 | { | |
8528 | sec->flags |= SEC_EXCLUDE; | |
8529 | return TRUE; | |
8530 | } | |
b49e97c9 | 8531 | |
b9d58d71 TS |
8532 | sec->flags |= SEC_KEEP; |
8533 | *loc = sec; | |
8534 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
8535 | } | |
b49e97c9 TS |
8536 | } |
8537 | ||
b49e97c9 | 8538 | sreloc = NULL; |
c224138d | 8539 | contents = NULL; |
b49e97c9 TS |
8540 | for (rel = relocs; rel < rel_end; ++rel) |
8541 | { | |
8542 | unsigned long r_symndx; | |
8543 | unsigned int r_type; | |
8544 | struct elf_link_hash_entry *h; | |
861fb55a | 8545 | bfd_boolean can_make_dynamic_p; |
c5d6fa44 RS |
8546 | bfd_boolean call_reloc_p; |
8547 | bfd_boolean constrain_symbol_p; | |
b49e97c9 TS |
8548 | |
8549 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
8550 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
8551 | ||
8552 | if (r_symndx < extsymoff) | |
8553 | h = NULL; | |
8554 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
8555 | { | |
4eca0228 | 8556 | _bfd_error_handler |
695344c0 | 8557 | /* xgettext:c-format */ |
2c1c9679 | 8558 | (_("%pB: malformed reloc detected for section %s"), |
d003868e | 8559 | abfd, name); |
b49e97c9 | 8560 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8561 | return FALSE; |
b49e97c9 TS |
8562 | } |
8563 | else | |
8564 | { | |
8565 | h = sym_hashes[r_symndx - extsymoff]; | |
81fbe831 AM |
8566 | if (h != NULL) |
8567 | { | |
8568 | while (h->root.type == bfd_link_hash_indirect | |
8569 | || h->root.type == bfd_link_hash_warning) | |
8570 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 | 8571 | } |
861fb55a | 8572 | } |
b49e97c9 | 8573 | |
861fb55a DJ |
8574 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
8575 | relocation into a dynamic one. */ | |
8576 | can_make_dynamic_p = FALSE; | |
c5d6fa44 RS |
8577 | |
8578 | /* Set CALL_RELOC_P to true if the relocation is for a call, | |
8579 | and if pointer equality therefore doesn't matter. */ | |
8580 | call_reloc_p = FALSE; | |
8581 | ||
8582 | /* Set CONSTRAIN_SYMBOL_P if we need to take the relocation | |
8583 | into account when deciding how to define the symbol. | |
8584 | Relocations in nonallocatable sections such as .pdr and | |
8585 | .debug* should have no effect. */ | |
8586 | constrain_symbol_p = ((sec->flags & SEC_ALLOC) != 0); | |
8587 | ||
861fb55a DJ |
8588 | switch (r_type) |
8589 | { | |
861fb55a DJ |
8590 | case R_MIPS_CALL16: |
8591 | case R_MIPS_CALL_HI16: | |
8592 | case R_MIPS_CALL_LO16: | |
c5d6fa44 RS |
8593 | case R_MIPS16_CALL16: |
8594 | case R_MICROMIPS_CALL16: | |
8595 | case R_MICROMIPS_CALL_HI16: | |
8596 | case R_MICROMIPS_CALL_LO16: | |
8597 | call_reloc_p = TRUE; | |
8598 | /* Fall through. */ | |
8599 | ||
8600 | case R_MIPS_GOT16: | |
861fb55a DJ |
8601 | case R_MIPS_GOT_LO16: |
8602 | case R_MIPS_GOT_PAGE: | |
861fb55a | 8603 | case R_MIPS_GOT_DISP: |
47275900 MR |
8604 | case R_MIPS16_GOT16: |
8605 | case R_MICROMIPS_GOT16: | |
8606 | case R_MICROMIPS_GOT_LO16: | |
8607 | case R_MICROMIPS_GOT_PAGE: | |
8608 | case R_MICROMIPS_GOT_DISP: | |
8609 | /* If we have a symbol that will resolve to zero at static link | |
8610 | time and it is used by a GOT relocation applied to code we | |
8611 | cannot relax to an immediate zero load, then we will be using | |
8612 | the special `__gnu_absolute_zero' symbol whose value is zero | |
8613 | at dynamic load time. We ignore HI16-type GOT relocations at | |
8614 | this stage, because their handling will depend entirely on | |
8615 | the corresponding LO16-type GOT relocation. */ | |
8616 | if (!call_hi16_reloc_p (r_type) | |
8617 | && h != NULL | |
8618 | && bfd_link_pic (info) | |
8619 | && !htab->use_absolute_zero | |
8620 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
8621 | { | |
8622 | bfd_boolean rel_reloc; | |
8623 | ||
8624 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8625 | return FALSE; | |
8626 | ||
8627 | rel_reloc = mips_elf_rel_relocation_p (abfd, sec, relocs, rel); | |
8628 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, !rel_reloc); | |
8629 | ||
8630 | if (!mips_elf_nullify_got_load (abfd, contents, rel, howto, | |
8631 | FALSE)) | |
8632 | if (!mips_elf_define_absolute_zero (abfd, info, htab, r_type)) | |
8633 | return FALSE; | |
8634 | } | |
8635 | ||
8636 | /* Fall through. */ | |
8637 | case R_MIPS_GOT_HI16: | |
8638 | case R_MIPS_GOT_OFST: | |
861fb55a DJ |
8639 | case R_MIPS_TLS_GOTTPREL: |
8640 | case R_MIPS_TLS_GD: | |
8641 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
8642 | case R_MIPS16_TLS_GOTTPREL: |
8643 | case R_MIPS16_TLS_GD: | |
8644 | case R_MIPS16_TLS_LDM: | |
df58fc94 | 8645 | case R_MICROMIPS_GOT_HI16: |
df58fc94 | 8646 | case R_MICROMIPS_GOT_OFST: |
df58fc94 RS |
8647 | case R_MICROMIPS_TLS_GOTTPREL: |
8648 | case R_MICROMIPS_TLS_GD: | |
8649 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
8650 | if (dynobj == NULL) |
8651 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
8652 | if (!mips_elf_create_got_section (dynobj, info)) | |
8653 | return FALSE; | |
0e1862bb | 8654 | if (htab->is_vxworks && !bfd_link_pic (info)) |
b49e97c9 | 8655 | { |
4eca0228 | 8656 | _bfd_error_handler |
695344c0 | 8657 | /* xgettext:c-format */ |
2dcf00ce AM |
8658 | (_("%pB: GOT reloc at %#" PRIx64 " not expected in executables"), |
8659 | abfd, (uint64_t) rel->r_offset); | |
861fb55a DJ |
8660 | bfd_set_error (bfd_error_bad_value); |
8661 | return FALSE; | |
b49e97c9 | 8662 | } |
c5d6fa44 | 8663 | can_make_dynamic_p = TRUE; |
861fb55a | 8664 | break; |
b49e97c9 | 8665 | |
c5d6fa44 | 8666 | case R_MIPS_NONE: |
99da6b5f | 8667 | case R_MIPS_JALR: |
df58fc94 | 8668 | case R_MICROMIPS_JALR: |
c5d6fa44 RS |
8669 | /* These relocations have empty fields and are purely there to |
8670 | provide link information. The symbol value doesn't matter. */ | |
8671 | constrain_symbol_p = FALSE; | |
8672 | break; | |
8673 | ||
8674 | case R_MIPS_GPREL16: | |
8675 | case R_MIPS_GPREL32: | |
8676 | case R_MIPS16_GPREL: | |
8677 | case R_MICROMIPS_GPREL16: | |
8678 | /* GP-relative relocations always resolve to a definition in a | |
8679 | regular input file, ignoring the one-definition rule. This is | |
8680 | important for the GP setup sequence in NewABI code, which | |
8681 | always resolves to a local function even if other relocations | |
8682 | against the symbol wouldn't. */ | |
8683 | constrain_symbol_p = FALSE; | |
99da6b5f AN |
8684 | break; |
8685 | ||
861fb55a DJ |
8686 | case R_MIPS_32: |
8687 | case R_MIPS_REL32: | |
8688 | case R_MIPS_64: | |
8689 | /* In VxWorks executables, references to external symbols | |
8690 | must be handled using copy relocs or PLT entries; it is not | |
8691 | possible to convert this relocation into a dynamic one. | |
8692 | ||
8693 | For executables that use PLTs and copy-relocs, we have a | |
8694 | choice between converting the relocation into a dynamic | |
8695 | one or using copy relocations or PLT entries. It is | |
8696 | usually better to do the former, unless the relocation is | |
8697 | against a read-only section. */ | |
0e1862bb | 8698 | if ((bfd_link_pic (info) |
861fb55a DJ |
8699 | || (h != NULL |
8700 | && !htab->is_vxworks | |
8701 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
8702 | && !(!info->nocopyreloc | |
8703 | && !PIC_OBJECT_P (abfd) | |
8704 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
8705 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 8706 | { |
861fb55a | 8707 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
8708 | if (dynobj == NULL) |
8709 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
861fb55a | 8710 | } |
c5d6fa44 | 8711 | break; |
b49e97c9 | 8712 | |
861fb55a DJ |
8713 | case R_MIPS_26: |
8714 | case R_MIPS_PC16: | |
7361da2c AB |
8715 | case R_MIPS_PC21_S2: |
8716 | case R_MIPS_PC26_S2: | |
861fb55a | 8717 | case R_MIPS16_26: |
c9775dde | 8718 | case R_MIPS16_PC16_S1: |
df58fc94 RS |
8719 | case R_MICROMIPS_26_S1: |
8720 | case R_MICROMIPS_PC7_S1: | |
8721 | case R_MICROMIPS_PC10_S1: | |
8722 | case R_MICROMIPS_PC16_S1: | |
8723 | case R_MICROMIPS_PC23_S2: | |
c5d6fa44 | 8724 | call_reloc_p = TRUE; |
861fb55a | 8725 | break; |
b49e97c9 TS |
8726 | } |
8727 | ||
0a44bf69 RS |
8728 | if (h) |
8729 | { | |
c5d6fa44 RS |
8730 | if (constrain_symbol_p) |
8731 | { | |
8732 | if (!can_make_dynamic_p) | |
8733 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = 1; | |
8734 | ||
8735 | if (!call_reloc_p) | |
8736 | h->pointer_equality_needed = 1; | |
8737 | ||
8738 | /* We must not create a stub for a symbol that has | |
8739 | relocations related to taking the function's address. | |
8740 | This doesn't apply to VxWorks, where CALL relocs refer | |
8741 | to a .got.plt entry instead of a normal .got entry. */ | |
8742 | if (!htab->is_vxworks && (!can_make_dynamic_p || !call_reloc_p)) | |
8743 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
8744 | } | |
8745 | ||
0a44bf69 RS |
8746 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
8747 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
8748 | room for them in .rela.dyn. */ | |
8749 | if (is_gott_symbol (info, h)) | |
8750 | { | |
8751 | if (sreloc == NULL) | |
8752 | { | |
8753 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
8754 | if (sreloc == NULL) | |
8755 | return FALSE; | |
8756 | } | |
8757 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
8758 | if (MIPS_ELF_READONLY_SECTION (sec)) |
8759 | /* We tell the dynamic linker that there are | |
8760 | relocations against the text segment. */ | |
8761 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
8762 | } |
8763 | } | |
df58fc94 RS |
8764 | else if (call_lo16_reloc_p (r_type) |
8765 | || got_lo16_reloc_p (r_type) | |
8766 | || got_disp_reloc_p (r_type) | |
738e5348 | 8767 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
8768 | { |
8769 | /* We may need a local GOT entry for this relocation. We | |
8770 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
8771 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
8772 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
8773 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 8774 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 8775 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 8776 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 | 8777 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
e641e783 | 8778 | rel->r_addend, info, r_type)) |
f4416af6 | 8779 | return FALSE; |
b49e97c9 TS |
8780 | } |
8781 | ||
8f0c309a CLT |
8782 | if (h != NULL |
8783 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
8784 | ELF_ST_IS_MIPS16 (h->other))) | |
861fb55a DJ |
8785 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; |
8786 | ||
b49e97c9 TS |
8787 | switch (r_type) |
8788 | { | |
8789 | case R_MIPS_CALL16: | |
738e5348 | 8790 | case R_MIPS16_CALL16: |
df58fc94 | 8791 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8792 | if (h == NULL) |
8793 | { | |
4eca0228 | 8794 | _bfd_error_handler |
695344c0 | 8795 | /* xgettext:c-format */ |
2dcf00ce AM |
8796 | (_("%pB: CALL16 reloc at %#" PRIx64 " not against global symbol"), |
8797 | abfd, (uint64_t) rel->r_offset); | |
b49e97c9 | 8798 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8799 | return FALSE; |
b49e97c9 TS |
8800 | } |
8801 | /* Fall through. */ | |
8802 | ||
8803 | case R_MIPS_CALL_HI16: | |
8804 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8805 | case R_MICROMIPS_CALL_HI16: |
8806 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8807 | if (h != NULL) |
8808 | { | |
6ccf4795 RS |
8809 | /* Make sure there is room in the regular GOT to hold the |
8810 | function's address. We may eliminate it in favour of | |
8811 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
e641e783 RS |
8812 | if (!mips_elf_record_global_got_symbol (h, abfd, info, TRUE, |
8813 | r_type)) | |
b34976b6 | 8814 | return FALSE; |
b49e97c9 TS |
8815 | |
8816 | /* We need a stub, not a plt entry for the undefined | |
8817 | function. But we record it as if it needs plt. See | |
c152c796 | 8818 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8819 | h->needs_plt = 1; |
b49e97c9 TS |
8820 | h->type = STT_FUNC; |
8821 | } | |
8822 | break; | |
8823 | ||
0fdc1bf1 | 8824 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8825 | case R_MICROMIPS_GOT_PAGE: |
738e5348 | 8826 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8827 | case R_MIPS_GOT16: |
8828 | case R_MIPS_GOT_HI16: | |
8829 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8830 | case R_MICROMIPS_GOT16: |
8831 | case R_MICROMIPS_GOT_HI16: | |
8832 | case R_MICROMIPS_GOT_LO16: | |
8833 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8834 | { |
3a3b6725 DJ |
8835 | /* This relocation needs (or may need, if h != NULL) a |
8836 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8837 | know for sure until we know whether the symbol is | |
8838 | preemptible. */ | |
c224138d RS |
8839 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8840 | { | |
8841 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8842 | return FALSE; | |
8843 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
8844 | addend = mips_elf_read_rel_addend (abfd, rel, | |
8845 | howto, contents); | |
9684f078 | 8846 | if (got16_reloc_p (r_type)) |
c224138d RS |
8847 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, |
8848 | contents, &addend); | |
8849 | else | |
8850 | addend <<= howto->rightshift; | |
8851 | } | |
8852 | else | |
8853 | addend = rel->r_addend; | |
13db6b44 RS |
8854 | if (!mips_elf_record_got_page_ref (info, abfd, r_symndx, |
8855 | h, addend)) | |
c224138d | 8856 | return FALSE; |
13db6b44 RS |
8857 | |
8858 | if (h) | |
8859 | { | |
8860 | struct mips_elf_link_hash_entry *hmips = | |
8861 | (struct mips_elf_link_hash_entry *) h; | |
8862 | ||
8863 | /* This symbol is definitely not overridable. */ | |
8864 | if (hmips->root.def_regular | |
0e1862bb | 8865 | && ! (bfd_link_pic (info) && ! info->symbolic |
13db6b44 RS |
8866 | && ! hmips->root.forced_local)) |
8867 | h = NULL; | |
8868 | } | |
c224138d | 8869 | } |
13db6b44 RS |
8870 | /* If this is a global, overridable symbol, GOT_PAGE will |
8871 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d RS |
8872 | /* Fall through. */ |
8873 | ||
b49e97c9 | 8874 | case R_MIPS_GOT_DISP: |
df58fc94 | 8875 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 | 8876 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
e641e783 | 8877 | FALSE, r_type)) |
b34976b6 | 8878 | return FALSE; |
b49e97c9 TS |
8879 | break; |
8880 | ||
0f20cc35 | 8881 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 8882 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 8883 | case R_MICROMIPS_TLS_GOTTPREL: |
0e1862bb | 8884 | if (bfd_link_pic (info)) |
0f20cc35 DJ |
8885 | info->flags |= DF_STATIC_TLS; |
8886 | /* Fall through */ | |
8887 | ||
8888 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8889 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
8890 | case R_MICROMIPS_TLS_LDM: |
8891 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 8892 | { |
cf35638d | 8893 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
8894 | h = NULL; |
8895 | } | |
8896 | /* Fall through */ | |
8897 | ||
8898 | case R_MIPS_TLS_GD: | |
d0f13682 | 8899 | case R_MIPS16_TLS_GD: |
df58fc94 | 8900 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
8901 | /* This symbol requires a global offset table entry, or two |
8902 | for TLS GD relocations. */ | |
e641e783 RS |
8903 | if (h != NULL) |
8904 | { | |
8905 | if (!mips_elf_record_global_got_symbol (h, abfd, info, | |
8906 | FALSE, r_type)) | |
8907 | return FALSE; | |
8908 | } | |
8909 | else | |
8910 | { | |
8911 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, | |
8912 | rel->r_addend, | |
8913 | info, r_type)) | |
8914 | return FALSE; | |
8915 | } | |
0f20cc35 DJ |
8916 | break; |
8917 | ||
b49e97c9 TS |
8918 | case R_MIPS_32: |
8919 | case R_MIPS_REL32: | |
8920 | case R_MIPS_64: | |
0a44bf69 RS |
8921 | /* In VxWorks executables, references to external symbols |
8922 | are handled using copy relocs or PLT stubs, so there's | |
8923 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 8924 | if (can_make_dynamic_p) |
b49e97c9 TS |
8925 | { |
8926 | if (sreloc == NULL) | |
8927 | { | |
0a44bf69 | 8928 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 8929 | if (sreloc == NULL) |
f4416af6 | 8930 | return FALSE; |
b49e97c9 | 8931 | } |
0e1862bb | 8932 | if (bfd_link_pic (info) && h == NULL) |
82f0cfbd EC |
8933 | { |
8934 | /* When creating a shared object, we must copy these | |
8935 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
8936 | relocs. Make room for this reloc in .rel(a).dyn. */ |
8937 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 8938 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8939 | /* We tell the dynamic linker that there are |
8940 | relocations against the text segment. */ | |
8941 | info->flags |= DF_TEXTREL; | |
8942 | } | |
b49e97c9 TS |
8943 | else |
8944 | { | |
8945 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 8946 | |
9a59ad6b DJ |
8947 | /* For a shared object, we must copy this relocation |
8948 | unless the symbol turns out to be undefined and | |
8949 | weak with non-default visibility, in which case | |
8950 | it will be left as zero. | |
8951 | ||
8952 | We could elide R_MIPS_REL32 for locally binding symbols | |
8953 | in shared libraries, but do not yet do so. | |
8954 | ||
8955 | For an executable, we only need to copy this | |
8956 | reloc if the symbol is defined in a dynamic | |
8957 | object. */ | |
b49e97c9 TS |
8958 | hmips = (struct mips_elf_link_hash_entry *) h; |
8959 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 8960 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8961 | /* We need it to tell the dynamic linker if there |
8962 | are relocations against the text segment. */ | |
8963 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 8964 | } |
b49e97c9 TS |
8965 | } |
8966 | ||
8967 | if (SGI_COMPAT (abfd)) | |
8968 | mips_elf_hash_table (info)->compact_rel_size += | |
8969 | sizeof (Elf32_External_crinfo); | |
8970 | break; | |
8971 | ||
8972 | case R_MIPS_26: | |
8973 | case R_MIPS_GPREL16: | |
8974 | case R_MIPS_LITERAL: | |
8975 | case R_MIPS_GPREL32: | |
df58fc94 RS |
8976 | case R_MICROMIPS_26_S1: |
8977 | case R_MICROMIPS_GPREL16: | |
8978 | case R_MICROMIPS_LITERAL: | |
8979 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
8980 | if (SGI_COMPAT (abfd)) |
8981 | mips_elf_hash_table (info)->compact_rel_size += | |
8982 | sizeof (Elf32_External_crinfo); | |
8983 | break; | |
8984 | ||
8985 | /* This relocation describes the C++ object vtable hierarchy. | |
8986 | Reconstruct it for later use during GC. */ | |
8987 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 8988 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 8989 | return FALSE; |
b49e97c9 TS |
8990 | break; |
8991 | ||
8992 | /* This relocation describes which C++ vtable entries are actually | |
8993 | used. Record for later use during GC. */ | |
8994 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
8995 | BFD_ASSERT (h != NULL); |
8996 | if (h != NULL | |
8997 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 8998 | return FALSE; |
b49e97c9 TS |
8999 | break; |
9000 | ||
9001 | default: | |
9002 | break; | |
9003 | } | |
9004 | ||
1bbce132 | 9005 | /* Record the need for a PLT entry. At this point we don't know |
07d6d2b8 AM |
9006 | yet if we are going to create a PLT in the first place, but |
9007 | we only record whether the relocation requires a standard MIPS | |
9008 | or a compressed code entry anyway. If we don't make a PLT after | |
9009 | all, then we'll just ignore these arrangements. Likewise if | |
9010 | a PLT entry is not created because the symbol is satisfied | |
9011 | locally. */ | |
1bbce132 | 9012 | if (h != NULL |
54806ffa MR |
9013 | && (branch_reloc_p (r_type) |
9014 | || mips16_branch_reloc_p (r_type) | |
9015 | || micromips_branch_reloc_p (r_type)) | |
1bbce132 MR |
9016 | && !SYMBOL_CALLS_LOCAL (info, h)) |
9017 | { | |
9018 | if (h->plt.plist == NULL) | |
9019 | h->plt.plist = mips_elf_make_plt_record (abfd); | |
9020 | if (h->plt.plist == NULL) | |
9021 | return FALSE; | |
9022 | ||
54806ffa | 9023 | if (branch_reloc_p (r_type)) |
1bbce132 MR |
9024 | h->plt.plist->need_mips = TRUE; |
9025 | else | |
9026 | h->plt.plist->need_comp = TRUE; | |
9027 | } | |
9028 | ||
738e5348 RS |
9029 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
9030 | if there is one. We only need to handle global symbols here; | |
9031 | we decide whether to keep or delete stubs for local symbols | |
9032 | when processing the stub's relocations. */ | |
b49e97c9 | 9033 | if (h != NULL |
738e5348 RS |
9034 | && !mips16_call_reloc_p (r_type) |
9035 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
9036 | { |
9037 | struct mips_elf_link_hash_entry *mh; | |
9038 | ||
9039 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 9040 | mh->need_fn_stub = TRUE; |
b49e97c9 | 9041 | } |
861fb55a DJ |
9042 | |
9043 | /* Refuse some position-dependent relocations when creating a | |
9044 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
9045 | not PIC, but we can create dynamic relocations and the result | |
9046 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
9047 | combined with R_MIPS_GOT16. */ | |
0e1862bb | 9048 | if (bfd_link_pic (info)) |
861fb55a DJ |
9049 | { |
9050 | switch (r_type) | |
9051 | { | |
9052 | case R_MIPS16_HI16: | |
9053 | case R_MIPS_HI16: | |
9054 | case R_MIPS_HIGHER: | |
9055 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
9056 | case R_MICROMIPS_HI16: |
9057 | case R_MICROMIPS_HIGHER: | |
9058 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
9059 | /* Don't refuse a high part relocation if it's against |
9060 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 9061 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
9062 | break; |
9063 | ||
9064 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
9065 | and has a special meaning. */ | |
9066 | if (!NEWABI_P (abfd) && h != NULL | |
9067 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
9068 | break; | |
9069 | ||
0fc1eb3c RS |
9070 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
9071 | if (is_gott_symbol (info, h)) | |
9072 | break; | |
9073 | ||
861fb55a DJ |
9074 | /* FALLTHROUGH */ |
9075 | ||
9076 | case R_MIPS16_26: | |
9077 | case R_MIPS_26: | |
df58fc94 | 9078 | case R_MICROMIPS_26_S1: |
861fb55a | 9079 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); |
4eca0228 | 9080 | _bfd_error_handler |
695344c0 | 9081 | /* xgettext:c-format */ |
871b3ab2 | 9082 | (_("%pB: relocation %s against `%s' can not be used" |
63a5468a | 9083 | " when making a shared object; recompile with -fPIC"), |
861fb55a DJ |
9084 | abfd, howto->name, |
9085 | (h) ? h->root.root.string : "a local symbol"); | |
9086 | bfd_set_error (bfd_error_bad_value); | |
9087 | return FALSE; | |
9088 | default: | |
9089 | break; | |
9090 | } | |
9091 | } | |
b49e97c9 TS |
9092 | } |
9093 | ||
b34976b6 | 9094 | return TRUE; |
b49e97c9 TS |
9095 | } |
9096 | \f | |
9a59ad6b DJ |
9097 | /* Allocate space for global sym dynamic relocs. */ |
9098 | ||
9099 | static bfd_boolean | |
9100 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
9101 | { | |
9102 | struct bfd_link_info *info = inf; | |
9103 | bfd *dynobj; | |
9104 | struct mips_elf_link_hash_entry *hmips; | |
9105 | struct mips_elf_link_hash_table *htab; | |
9106 | ||
9107 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9108 | BFD_ASSERT (htab != NULL); |
9109 | ||
9a59ad6b DJ |
9110 | dynobj = elf_hash_table (info)->dynobj; |
9111 | hmips = (struct mips_elf_link_hash_entry *) h; | |
9112 | ||
9113 | /* VxWorks executables are handled elsewhere; we only need to | |
9114 | allocate relocations in shared objects. */ | |
0e1862bb | 9115 | if (htab->is_vxworks && !bfd_link_pic (info)) |
9a59ad6b DJ |
9116 | return TRUE; |
9117 | ||
7686d77d AM |
9118 | /* Ignore indirect symbols. All relocations against such symbols |
9119 | will be redirected to the target symbol. */ | |
9120 | if (h->root.type == bfd_link_hash_indirect) | |
63897e2c RS |
9121 | return TRUE; |
9122 | ||
9a59ad6b DJ |
9123 | /* If this symbol is defined in a dynamic object, or we are creating |
9124 | a shared library, we will need to copy any R_MIPS_32 or | |
9125 | R_MIPS_REL32 relocs against it into the output file. */ | |
0e1862bb | 9126 | if (! bfd_link_relocatable (info) |
9a59ad6b DJ |
9127 | && hmips->possibly_dynamic_relocs != 0 |
9128 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 9129 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
0e1862bb | 9130 | || bfd_link_pic (info))) |
9a59ad6b DJ |
9131 | { |
9132 | bfd_boolean do_copy = TRUE; | |
9133 | ||
9134 | if (h->root.type == bfd_link_hash_undefweak) | |
9135 | { | |
262e07d0 MR |
9136 | /* Do not copy relocations for undefined weak symbols that |
9137 | we are not going to export. */ | |
9138 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
9a59ad6b DJ |
9139 | do_copy = FALSE; |
9140 | ||
9141 | /* Make sure undefined weak symbols are output as a dynamic | |
9142 | symbol in PIEs. */ | |
9143 | else if (h->dynindx == -1 && !h->forced_local) | |
9144 | { | |
9145 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9146 | return FALSE; | |
9147 | } | |
9148 | } | |
9149 | ||
9150 | if (do_copy) | |
9151 | { | |
aff469fa | 9152 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
9153 | the SVR4 psABI requires it to have a dynamic symbol table |
9154 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
9155 | relocations against it. | |
9156 | ||
9157 | VxWorks does not enforce the same mapping between the GOT | |
9158 | and the symbol table, so the same requirement does not | |
9159 | apply there. */ | |
6ccf4795 RS |
9160 | if (!htab->is_vxworks) |
9161 | { | |
9162 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
9163 | hmips->global_got_area = GGA_RELOC_ONLY; | |
9164 | hmips->got_only_for_calls = FALSE; | |
9165 | } | |
aff469fa | 9166 | |
9a59ad6b DJ |
9167 | mips_elf_allocate_dynamic_relocations |
9168 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
9169 | if (hmips->readonly_reloc) | |
9170 | /* We tell the dynamic linker that there are relocations | |
9171 | against the text segment. */ | |
9172 | info->flags |= DF_TEXTREL; | |
9173 | } | |
9174 | } | |
9175 | ||
9176 | return TRUE; | |
9177 | } | |
9178 | ||
b49e97c9 TS |
9179 | /* Adjust a symbol defined by a dynamic object and referenced by a |
9180 | regular object. The current definition is in some section of the | |
9181 | dynamic object, but we're not including those sections. We have to | |
9182 | change the definition to something the rest of the link can | |
9183 | understand. */ | |
9184 | ||
b34976b6 | 9185 | bfd_boolean |
9719ad41 RS |
9186 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
9187 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
9188 | { |
9189 | bfd *dynobj; | |
9190 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 9191 | struct mips_elf_link_hash_table *htab; |
5474d94f | 9192 | asection *s, *srel; |
b49e97c9 | 9193 | |
5108fc1b | 9194 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
9195 | BFD_ASSERT (htab != NULL); |
9196 | ||
b49e97c9 | 9197 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 9198 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
9199 | |
9200 | /* Make sure we know what is going on here. */ | |
9201 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 9202 | && (h->needs_plt |
60d67dc8 | 9203 | || h->is_weakalias |
f5385ebf AM |
9204 | || (h->def_dynamic |
9205 | && h->ref_regular | |
9206 | && !h->def_regular))); | |
b49e97c9 | 9207 | |
b49e97c9 | 9208 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9209 | |
861fb55a DJ |
9210 | /* If there are call relocations against an externally-defined symbol, |
9211 | see whether we can create a MIPS lazy-binding stub for it. We can | |
9212 | only do this if all references to the function are through call | |
9213 | relocations, and in that case, the traditional lazy-binding stubs | |
9214 | are much more efficient than PLT entries. | |
9215 | ||
9216 | Traditional stubs are only available on SVR4 psABI-based systems; | |
9217 | VxWorks always uses PLTs instead. */ | |
9218 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
9219 | { |
9220 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 9221 | return TRUE; |
b49e97c9 TS |
9222 | |
9223 | /* If this symbol is not defined in a regular file, then set | |
9224 | the symbol to the stub location. This is required to make | |
9225 | function pointers compare as equal between the normal | |
9226 | executable and the shared library. */ | |
4b8377e7 MR |
9227 | if (!h->def_regular |
9228 | && !bfd_is_abs_section (htab->sstubs->output_section)) | |
b49e97c9 | 9229 | { |
33bb52fb RS |
9230 | hmips->needs_lazy_stub = TRUE; |
9231 | htab->lazy_stub_count++; | |
b34976b6 | 9232 | return TRUE; |
b49e97c9 TS |
9233 | } |
9234 | } | |
861fb55a DJ |
9235 | /* As above, VxWorks requires PLT entries for externally-defined |
9236 | functions that are only accessed through call relocations. | |
b49e97c9 | 9237 | |
861fb55a DJ |
9238 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
9239 | are static-only relocations against an externally-defined function. | |
9240 | This can technically occur for shared libraries if there are | |
9241 | branches to the symbol, although it is unlikely that this will be | |
9242 | used in practice due to the short ranges involved. It can occur | |
9243 | for any relative or absolute relocation in executables; in that | |
9244 | case, the PLT entry becomes the function's canonical address. */ | |
9245 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
9246 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
9247 | && htab->use_plts_and_copy_relocs | |
9248 | && !SYMBOL_CALLS_LOCAL (info, h) | |
9249 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
9250 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 9251 | { |
1bbce132 MR |
9252 | bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd); |
9253 | bfd_boolean newabi_p = NEWABI_P (info->output_bfd); | |
9254 | ||
9255 | /* If this is the first symbol to need a PLT entry, then make some | |
07d6d2b8 AM |
9256 | basic setup. Also work out PLT entry sizes. We'll need them |
9257 | for PLT offset calculations. */ | |
1bbce132 | 9258 | if (htab->plt_mips_offset + htab->plt_comp_offset == 0) |
861fb55a | 9259 | { |
ce558b89 | 9260 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
1bbce132 | 9261 | BFD_ASSERT (htab->plt_got_index == 0); |
0a44bf69 | 9262 | |
861fb55a DJ |
9263 | /* If we're using the PLT additions to the psABI, each PLT |
9264 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
9265 | Encourage better cache usage by aligning. We do this | |
9266 | lazily to avoid pessimizing traditional objects. */ | |
9267 | if (!htab->is_vxworks | |
ce558b89 | 9268 | && !bfd_set_section_alignment (dynobj, htab->root.splt, 5)) |
861fb55a | 9269 | return FALSE; |
0a44bf69 | 9270 | |
861fb55a DJ |
9271 | /* Make sure that .got.plt is word-aligned. We do this lazily |
9272 | for the same reason as above. */ | |
ce558b89 | 9273 | if (!bfd_set_section_alignment (dynobj, htab->root.sgotplt, |
861fb55a DJ |
9274 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
9275 | return FALSE; | |
0a44bf69 | 9276 | |
861fb55a DJ |
9277 | /* On non-VxWorks targets, the first two entries in .got.plt |
9278 | are reserved. */ | |
9279 | if (!htab->is_vxworks) | |
1bbce132 MR |
9280 | htab->plt_got_index |
9281 | += (get_elf_backend_data (dynobj)->got_header_size | |
9282 | / MIPS_ELF_GOT_SIZE (dynobj)); | |
0a44bf69 | 9283 | |
861fb55a DJ |
9284 | /* On VxWorks, also allocate room for the header's |
9285 | .rela.plt.unloaded entries. */ | |
0e1862bb | 9286 | if (htab->is_vxworks && !bfd_link_pic (info)) |
0a44bf69 | 9287 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
1bbce132 MR |
9288 | |
9289 | /* Now work out the sizes of individual PLT entries. */ | |
0e1862bb | 9290 | if (htab->is_vxworks && bfd_link_pic (info)) |
1bbce132 MR |
9291 | htab->plt_mips_entry_size |
9292 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
9293 | else if (htab->is_vxworks) | |
9294 | htab->plt_mips_entry_size | |
9295 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
9296 | else if (newabi_p) | |
9297 | htab->plt_mips_entry_size | |
9298 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
833794fc | 9299 | else if (!micromips_p) |
1bbce132 MR |
9300 | { |
9301 | htab->plt_mips_entry_size | |
9302 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9303 | htab->plt_comp_entry_size | |
833794fc MR |
9304 | = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); |
9305 | } | |
9306 | else if (htab->insn32) | |
9307 | { | |
9308 | htab->plt_mips_entry_size | |
9309 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9310 | htab->plt_comp_entry_size | |
9311 | = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
1bbce132 MR |
9312 | } |
9313 | else | |
9314 | { | |
9315 | htab->plt_mips_entry_size | |
9316 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9317 | htab->plt_comp_entry_size | |
833794fc | 9318 | = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); |
1bbce132 | 9319 | } |
0a44bf69 RS |
9320 | } |
9321 | ||
1bbce132 MR |
9322 | if (h->plt.plist == NULL) |
9323 | h->plt.plist = mips_elf_make_plt_record (dynobj); | |
9324 | if (h->plt.plist == NULL) | |
9325 | return FALSE; | |
9326 | ||
9327 | /* There are no defined MIPS16 or microMIPS PLT entries for VxWorks, | |
07d6d2b8 | 9328 | n32 or n64, so always use a standard entry there. |
1bbce132 | 9329 | |
07d6d2b8 AM |
9330 | If the symbol has a MIPS16 call stub and gets a PLT entry, then |
9331 | all MIPS16 calls will go via that stub, and there is no benefit | |
9332 | to having a MIPS16 entry. And in the case of call_stub a | |
9333 | standard entry actually has to be used as the stub ends with a J | |
9334 | instruction. */ | |
1bbce132 MR |
9335 | if (newabi_p |
9336 | || htab->is_vxworks | |
9337 | || hmips->call_stub | |
9338 | || hmips->call_fp_stub) | |
9339 | { | |
9340 | h->plt.plist->need_mips = TRUE; | |
9341 | h->plt.plist->need_comp = FALSE; | |
9342 | } | |
9343 | ||
9344 | /* Otherwise, if there are no direct calls to the function, we | |
07d6d2b8 AM |
9345 | have a free choice of whether to use standard or compressed |
9346 | entries. Prefer microMIPS entries if the object is known to | |
9347 | contain microMIPS code, so that it becomes possible to create | |
9348 | pure microMIPS binaries. Prefer standard entries otherwise, | |
9349 | because MIPS16 ones are no smaller and are usually slower. */ | |
1bbce132 MR |
9350 | if (!h->plt.plist->need_mips && !h->plt.plist->need_comp) |
9351 | { | |
9352 | if (micromips_p) | |
9353 | h->plt.plist->need_comp = TRUE; | |
9354 | else | |
9355 | h->plt.plist->need_mips = TRUE; | |
9356 | } | |
9357 | ||
9358 | if (h->plt.plist->need_mips) | |
9359 | { | |
9360 | h->plt.plist->mips_offset = htab->plt_mips_offset; | |
9361 | htab->plt_mips_offset += htab->plt_mips_entry_size; | |
9362 | } | |
9363 | if (h->plt.plist->need_comp) | |
9364 | { | |
9365 | h->plt.plist->comp_offset = htab->plt_comp_offset; | |
9366 | htab->plt_comp_offset += htab->plt_comp_entry_size; | |
9367 | } | |
9368 | ||
9369 | /* Reserve the corresponding .got.plt entry now too. */ | |
9370 | h->plt.plist->gotplt_index = htab->plt_got_index++; | |
0a44bf69 RS |
9371 | |
9372 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 9373 | symbol's value to the address of the stub. */ |
0e1862bb | 9374 | if (!bfd_link_pic (info) && !h->def_regular) |
1bbce132 | 9375 | hmips->use_plt_entry = TRUE; |
0a44bf69 | 9376 | |
1bbce132 | 9377 | /* Make room for the R_MIPS_JUMP_SLOT relocation. */ |
ce558b89 AM |
9378 | htab->root.srelplt->size += (htab->is_vxworks |
9379 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
9380 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
9381 | |
9382 | /* Make room for the .rela.plt.unloaded relocations. */ | |
0e1862bb | 9383 | if (htab->is_vxworks && !bfd_link_pic (info)) |
0a44bf69 RS |
9384 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
9385 | ||
861fb55a DJ |
9386 | /* All relocations against this symbol that could have been made |
9387 | dynamic will now refer to the PLT entry instead. */ | |
9388 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 9389 | |
0a44bf69 RS |
9390 | return TRUE; |
9391 | } | |
9392 | ||
9393 | /* If this is a weak symbol, and there is a real definition, the | |
9394 | processor independent code will have arranged for us to see the | |
9395 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 9396 | if (h->is_weakalias) |
0a44bf69 | 9397 | { |
60d67dc8 AM |
9398 | struct elf_link_hash_entry *def = weakdef (h); |
9399 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
9400 | h->root.u.def.section = def->root.u.def.section; | |
9401 | h->root.u.def.value = def->root.u.def.value; | |
0a44bf69 RS |
9402 | return TRUE; |
9403 | } | |
9404 | ||
861fb55a DJ |
9405 | /* Otherwise, there is nothing further to do for symbols defined |
9406 | in regular objects. */ | |
9407 | if (h->def_regular) | |
0a44bf69 RS |
9408 | return TRUE; |
9409 | ||
861fb55a DJ |
9410 | /* There's also nothing more to do if we'll convert all relocations |
9411 | against this symbol into dynamic relocations. */ | |
9412 | if (!hmips->has_static_relocs) | |
9413 | return TRUE; | |
9414 | ||
9415 | /* We're now relying on copy relocations. Complain if we have | |
9416 | some that we can't convert. */ | |
0e1862bb | 9417 | if (!htab->use_plts_and_copy_relocs || bfd_link_pic (info)) |
861fb55a | 9418 | { |
4eca0228 AM |
9419 | _bfd_error_handler (_("non-dynamic relocations refer to " |
9420 | "dynamic symbol %s"), | |
9421 | h->root.root.string); | |
861fb55a DJ |
9422 | bfd_set_error (bfd_error_bad_value); |
9423 | return FALSE; | |
9424 | } | |
9425 | ||
0a44bf69 RS |
9426 | /* We must allocate the symbol in our .dynbss section, which will |
9427 | become part of the .bss section of the executable. There will be | |
9428 | an entry for this symbol in the .dynsym section. The dynamic | |
9429 | object will contain position independent code, so all references | |
9430 | from the dynamic object to this symbol will go through the global | |
9431 | offset table. The dynamic linker will use the .dynsym entry to | |
9432 | determine the address it must put in the global offset table, so | |
9433 | both the dynamic object and the regular object will refer to the | |
9434 | same memory location for the variable. */ | |
9435 | ||
5474d94f AM |
9436 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
9437 | { | |
9438 | s = htab->root.sdynrelro; | |
9439 | srel = htab->root.sreldynrelro; | |
9440 | } | |
9441 | else | |
9442 | { | |
9443 | s = htab->root.sdynbss; | |
9444 | srel = htab->root.srelbss; | |
9445 | } | |
0a44bf69 RS |
9446 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
9447 | { | |
861fb55a | 9448 | if (htab->is_vxworks) |
5474d94f | 9449 | srel->size += sizeof (Elf32_External_Rela); |
861fb55a DJ |
9450 | else |
9451 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
9452 | h->needs_copy = 1; |
9453 | } | |
9454 | ||
861fb55a DJ |
9455 | /* All relocations against this symbol that could have been made |
9456 | dynamic will now refer to the local copy instead. */ | |
9457 | hmips->possibly_dynamic_relocs = 0; | |
9458 | ||
5474d94f | 9459 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
0a44bf69 | 9460 | } |
b49e97c9 TS |
9461 | \f |
9462 | /* This function is called after all the input files have been read, | |
9463 | and the input sections have been assigned to output sections. We | |
9464 | check for any mips16 stub sections that we can discard. */ | |
9465 | ||
b34976b6 | 9466 | bfd_boolean |
9719ad41 RS |
9467 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
9468 | struct bfd_link_info *info) | |
b49e97c9 | 9469 | { |
351cdf24 | 9470 | asection *sect; |
0a44bf69 | 9471 | struct mips_elf_link_hash_table *htab; |
861fb55a | 9472 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
9473 | |
9474 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9475 | BFD_ASSERT (htab != NULL); |
f4416af6 | 9476 | |
b49e97c9 | 9477 | /* The .reginfo section has a fixed size. */ |
351cdf24 MF |
9478 | sect = bfd_get_section_by_name (output_bfd, ".reginfo"); |
9479 | if (sect != NULL) | |
6798f8bf MR |
9480 | { |
9481 | bfd_set_section_size (output_bfd, sect, sizeof (Elf32_External_RegInfo)); | |
9482 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; | |
9483 | } | |
351cdf24 MF |
9484 | |
9485 | /* The .MIPS.abiflags section has a fixed size. */ | |
9486 | sect = bfd_get_section_by_name (output_bfd, ".MIPS.abiflags"); | |
9487 | if (sect != NULL) | |
6798f8bf MR |
9488 | { |
9489 | bfd_set_section_size (output_bfd, sect, | |
9490 | sizeof (Elf_External_ABIFlags_v0)); | |
9491 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; | |
9492 | } | |
b49e97c9 | 9493 | |
861fb55a DJ |
9494 | hti.info = info; |
9495 | hti.output_bfd = output_bfd; | |
9496 | hti.error = FALSE; | |
9497 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
9498 | mips_elf_check_symbols, &hti); | |
9499 | if (hti.error) | |
9500 | return FALSE; | |
f4416af6 | 9501 | |
33bb52fb RS |
9502 | return TRUE; |
9503 | } | |
9504 | ||
9505 | /* If the link uses a GOT, lay it out and work out its size. */ | |
9506 | ||
9507 | static bfd_boolean | |
9508 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
9509 | { | |
9510 | bfd *dynobj; | |
9511 | asection *s; | |
9512 | struct mips_got_info *g; | |
33bb52fb RS |
9513 | bfd_size_type loadable_size = 0; |
9514 | bfd_size_type page_gotno; | |
d7206569 | 9515 | bfd *ibfd; |
ab361d49 | 9516 | struct mips_elf_traverse_got_arg tga; |
33bb52fb RS |
9517 | struct mips_elf_link_hash_table *htab; |
9518 | ||
9519 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9520 | BFD_ASSERT (htab != NULL); |
9521 | ||
ce558b89 | 9522 | s = htab->root.sgot; |
f4416af6 | 9523 | if (s == NULL) |
b34976b6 | 9524 | return TRUE; |
b49e97c9 | 9525 | |
33bb52fb | 9526 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
9527 | g = htab->got_info; |
9528 | ||
861fb55a DJ |
9529 | /* Allocate room for the reserved entries. VxWorks always reserves |
9530 | 3 entries; other objects only reserve 2 entries. */ | |
cb22ccf4 | 9531 | BFD_ASSERT (g->assigned_low_gotno == 0); |
861fb55a DJ |
9532 | if (htab->is_vxworks) |
9533 | htab->reserved_gotno = 3; | |
9534 | else | |
9535 | htab->reserved_gotno = 2; | |
9536 | g->local_gotno += htab->reserved_gotno; | |
cb22ccf4 | 9537 | g->assigned_low_gotno = htab->reserved_gotno; |
861fb55a | 9538 | |
6c42ddb9 RS |
9539 | /* Decide which symbols need to go in the global part of the GOT and |
9540 | count the number of reloc-only GOT symbols. */ | |
020d7251 | 9541 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 9542 | |
13db6b44 RS |
9543 | if (!mips_elf_resolve_final_got_entries (info, g)) |
9544 | return FALSE; | |
9545 | ||
33bb52fb RS |
9546 | /* Calculate the total loadable size of the output. That |
9547 | will give us the maximum number of GOT_PAGE entries | |
9548 | required. */ | |
c72f2fb2 | 9549 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
33bb52fb RS |
9550 | { |
9551 | asection *subsection; | |
5108fc1b | 9552 | |
d7206569 | 9553 | for (subsection = ibfd->sections; |
33bb52fb RS |
9554 | subsection; |
9555 | subsection = subsection->next) | |
9556 | { | |
9557 | if ((subsection->flags & SEC_ALLOC) == 0) | |
9558 | continue; | |
9559 | loadable_size += ((subsection->size + 0xf) | |
9560 | &~ (bfd_size_type) 0xf); | |
9561 | } | |
9562 | } | |
f4416af6 | 9563 | |
0a44bf69 | 9564 | if (htab->is_vxworks) |
738e5348 | 9565 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
9566 | relocations against local symbols evaluate to "G", and the EABI does |
9567 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 9568 | page_gotno = 0; |
0a44bf69 RS |
9569 | else |
9570 | /* Assume there are two loadable segments consisting of contiguous | |
9571 | sections. Is 5 enough? */ | |
c224138d RS |
9572 | page_gotno = (loadable_size >> 16) + 5; |
9573 | ||
13db6b44 | 9574 | /* Choose the smaller of the two page estimates; both are intended to be |
c224138d RS |
9575 | conservative. */ |
9576 | if (page_gotno > g->page_gotno) | |
9577 | page_gotno = g->page_gotno; | |
f4416af6 | 9578 | |
c224138d | 9579 | g->local_gotno += page_gotno; |
cb22ccf4 | 9580 | g->assigned_high_gotno = g->local_gotno - 1; |
ab361d49 | 9581 | |
ab361d49 RS |
9582 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9583 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
0f20cc35 DJ |
9584 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9585 | ||
0a44bf69 RS |
9586 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
9587 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
9588 | dynamic loader. */ | |
57093f5e | 9589 | if (!htab->is_vxworks && s->size > MIPS_ELF_GOT_MAX_SIZE (info)) |
0f20cc35 | 9590 | { |
a8028dd0 | 9591 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
9592 | return FALSE; |
9593 | } | |
9594 | else | |
9595 | { | |
d7206569 RS |
9596 | /* Record that all bfds use G. This also has the effect of freeing |
9597 | the per-bfd GOTs, which we no longer need. */ | |
c72f2fb2 | 9598 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
d7206569 RS |
9599 | if (mips_elf_bfd_got (ibfd, FALSE)) |
9600 | mips_elf_replace_bfd_got (ibfd, g); | |
9601 | mips_elf_replace_bfd_got (output_bfd, g); | |
9602 | ||
33bb52fb | 9603 | /* Set up TLS entries. */ |
0f20cc35 | 9604 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
72e7511a RS |
9605 | tga.info = info; |
9606 | tga.g = g; | |
9607 | tga.value = MIPS_ELF_GOT_SIZE (output_bfd); | |
9608 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
9609 | if (!tga.g) | |
9610 | return FALSE; | |
1fd20d70 RS |
9611 | BFD_ASSERT (g->tls_assigned_gotno |
9612 | == g->global_gotno + g->local_gotno + g->tls_gotno); | |
33bb52fb | 9613 | |
57093f5e | 9614 | /* Each VxWorks GOT entry needs an explicit relocation. */ |
0e1862bb | 9615 | if (htab->is_vxworks && bfd_link_pic (info)) |
57093f5e RS |
9616 | g->relocs += g->global_gotno + g->local_gotno - htab->reserved_gotno; |
9617 | ||
33bb52fb | 9618 | /* Allocate room for the TLS relocations. */ |
ab361d49 RS |
9619 | if (g->relocs) |
9620 | mips_elf_allocate_dynamic_relocations (dynobj, info, g->relocs); | |
0f20cc35 | 9621 | } |
b49e97c9 | 9622 | |
b34976b6 | 9623 | return TRUE; |
b49e97c9 TS |
9624 | } |
9625 | ||
33bb52fb RS |
9626 | /* Estimate the size of the .MIPS.stubs section. */ |
9627 | ||
9628 | static void | |
9629 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
9630 | { | |
9631 | struct mips_elf_link_hash_table *htab; | |
9632 | bfd_size_type dynsymcount; | |
9633 | ||
9634 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9635 | BFD_ASSERT (htab != NULL); |
9636 | ||
33bb52fb RS |
9637 | if (htab->lazy_stub_count == 0) |
9638 | return; | |
9639 | ||
9640 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
9641 | section, so add a dummy entry to the end. */ | |
9642 | htab->lazy_stub_count++; | |
9643 | ||
9644 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
9645 | At this point, dynsymcount does not account for section symbols | |
9646 | and count_section_dynsyms may overestimate the number that will | |
9647 | be needed. */ | |
9648 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
9649 | + count_section_dynsyms (output_bfd, info)); | |
9650 | ||
1bbce132 MR |
9651 | /* Determine the size of one stub entry. There's no disadvantage |
9652 | from using microMIPS code here, so for the sake of pure-microMIPS | |
9653 | binaries we prefer it whenever there's any microMIPS code in | |
9654 | output produced at all. This has a benefit of stubs being | |
833794fc MR |
9655 | shorter by 4 bytes each too, unless in the insn32 mode. */ |
9656 | if (!MICROMIPS_P (output_bfd)) | |
1bbce132 MR |
9657 | htab->function_stub_size = (dynsymcount > 0x10000 |
9658 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
9659 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
833794fc MR |
9660 | else if (htab->insn32) |
9661 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9662 | ? MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE | |
9663 | : MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE); | |
9664 | else | |
9665 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9666 | ? MICROMIPS_FUNCTION_STUB_BIG_SIZE | |
9667 | : MICROMIPS_FUNCTION_STUB_NORMAL_SIZE); | |
33bb52fb RS |
9668 | |
9669 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
9670 | } | |
9671 | ||
1bbce132 MR |
9672 | /* A mips_elf_link_hash_traverse callback for which DATA points to a |
9673 | mips_htab_traverse_info. If H needs a traditional MIPS lazy-binding | |
9674 | stub, allocate an entry in the stubs section. */ | |
33bb52fb RS |
9675 | |
9676 | static bfd_boolean | |
af924177 | 9677 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 9678 | { |
1bbce132 | 9679 | struct mips_htab_traverse_info *hti = data; |
33bb52fb | 9680 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9681 | struct bfd_link_info *info; |
9682 | bfd *output_bfd; | |
9683 | ||
9684 | info = hti->info; | |
9685 | output_bfd = hti->output_bfd; | |
9686 | htab = mips_elf_hash_table (info); | |
9687 | BFD_ASSERT (htab != NULL); | |
33bb52fb | 9688 | |
33bb52fb RS |
9689 | if (h->needs_lazy_stub) |
9690 | { | |
1bbce132 MR |
9691 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); |
9692 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9693 | bfd_vma isa_bit = micromips_p; | |
9694 | ||
9695 | BFD_ASSERT (htab->root.dynobj != NULL); | |
9696 | if (h->root.plt.plist == NULL) | |
9697 | h->root.plt.plist = mips_elf_make_plt_record (htab->sstubs->owner); | |
9698 | if (h->root.plt.plist == NULL) | |
9699 | { | |
9700 | hti->error = TRUE; | |
9701 | return FALSE; | |
9702 | } | |
33bb52fb | 9703 | h->root.root.u.def.section = htab->sstubs; |
1bbce132 MR |
9704 | h->root.root.u.def.value = htab->sstubs->size + isa_bit; |
9705 | h->root.plt.plist->stub_offset = htab->sstubs->size; | |
9706 | h->root.other = other; | |
33bb52fb RS |
9707 | htab->sstubs->size += htab->function_stub_size; |
9708 | } | |
9709 | return TRUE; | |
9710 | } | |
9711 | ||
9712 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
9713 | Set the final size of the .MIPS.stub section. */ | |
9714 | ||
1bbce132 | 9715 | static bfd_boolean |
33bb52fb RS |
9716 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) |
9717 | { | |
1bbce132 MR |
9718 | bfd *output_bfd = info->output_bfd; |
9719 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); | |
9720 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9721 | bfd_vma isa_bit = micromips_p; | |
33bb52fb | 9722 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9723 | struct mips_htab_traverse_info hti; |
9724 | struct elf_link_hash_entry *h; | |
9725 | bfd *dynobj; | |
33bb52fb RS |
9726 | |
9727 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9728 | BFD_ASSERT (htab != NULL); |
9729 | ||
33bb52fb | 9730 | if (htab->lazy_stub_count == 0) |
1bbce132 | 9731 | return TRUE; |
33bb52fb RS |
9732 | |
9733 | htab->sstubs->size = 0; | |
1bbce132 MR |
9734 | hti.info = info; |
9735 | hti.output_bfd = output_bfd; | |
9736 | hti.error = FALSE; | |
9737 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, &hti); | |
9738 | if (hti.error) | |
9739 | return FALSE; | |
33bb52fb RS |
9740 | htab->sstubs->size += htab->function_stub_size; |
9741 | BFD_ASSERT (htab->sstubs->size | |
9742 | == htab->lazy_stub_count * htab->function_stub_size); | |
1bbce132 MR |
9743 | |
9744 | dynobj = elf_hash_table (info)->dynobj; | |
9745 | BFD_ASSERT (dynobj != NULL); | |
9746 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->sstubs, "_MIPS_STUBS_"); | |
9747 | if (h == NULL) | |
9748 | return FALSE; | |
9749 | h->root.u.def.value = isa_bit; | |
9750 | h->other = other; | |
9751 | h->type = STT_FUNC; | |
9752 | ||
9753 | return TRUE; | |
9754 | } | |
9755 | ||
9756 | /* A mips_elf_link_hash_traverse callback for which DATA points to a | |
9757 | bfd_link_info. If H uses the address of a PLT entry as the value | |
9758 | of the symbol, then set the entry in the symbol table now. Prefer | |
9759 | a standard MIPS PLT entry. */ | |
9760 | ||
9761 | static bfd_boolean | |
9762 | mips_elf_set_plt_sym_value (struct mips_elf_link_hash_entry *h, void *data) | |
9763 | { | |
9764 | struct bfd_link_info *info = data; | |
9765 | bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd); | |
9766 | struct mips_elf_link_hash_table *htab; | |
9767 | unsigned int other; | |
9768 | bfd_vma isa_bit; | |
9769 | bfd_vma val; | |
9770 | ||
9771 | htab = mips_elf_hash_table (info); | |
9772 | BFD_ASSERT (htab != NULL); | |
9773 | ||
9774 | if (h->use_plt_entry) | |
9775 | { | |
9776 | BFD_ASSERT (h->root.plt.plist != NULL); | |
9777 | BFD_ASSERT (h->root.plt.plist->mips_offset != MINUS_ONE | |
9778 | || h->root.plt.plist->comp_offset != MINUS_ONE); | |
9779 | ||
9780 | val = htab->plt_header_size; | |
9781 | if (h->root.plt.plist->mips_offset != MINUS_ONE) | |
9782 | { | |
9783 | isa_bit = 0; | |
9784 | val += h->root.plt.plist->mips_offset; | |
9785 | other = 0; | |
9786 | } | |
9787 | else | |
9788 | { | |
9789 | isa_bit = 1; | |
9790 | val += htab->plt_mips_offset + h->root.plt.plist->comp_offset; | |
9791 | other = micromips_p ? STO_MICROMIPS : STO_MIPS16; | |
9792 | } | |
9793 | val += isa_bit; | |
9794 | /* For VxWorks, point at the PLT load stub rather than the lazy | |
07d6d2b8 AM |
9795 | resolution stub; this stub will become the canonical function |
9796 | address. */ | |
1bbce132 MR |
9797 | if (htab->is_vxworks) |
9798 | val += 8; | |
9799 | ||
ce558b89 | 9800 | h->root.root.u.def.section = htab->root.splt; |
1bbce132 MR |
9801 | h->root.root.u.def.value = val; |
9802 | h->root.other = other; | |
9803 | } | |
9804 | ||
9805 | return TRUE; | |
33bb52fb RS |
9806 | } |
9807 | ||
b49e97c9 TS |
9808 | /* Set the sizes of the dynamic sections. */ |
9809 | ||
b34976b6 | 9810 | bfd_boolean |
9719ad41 RS |
9811 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
9812 | struct bfd_link_info *info) | |
b49e97c9 TS |
9813 | { |
9814 | bfd *dynobj; | |
861fb55a | 9815 | asection *s, *sreldyn; |
b34976b6 | 9816 | bfd_boolean reltext; |
0a44bf69 | 9817 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9818 | |
0a44bf69 | 9819 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9820 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
9821 | dynobj = elf_hash_table (info)->dynobj; |
9822 | BFD_ASSERT (dynobj != NULL); | |
9823 | ||
9824 | if (elf_hash_table (info)->dynamic_sections_created) | |
9825 | { | |
9826 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9827 | if (bfd_link_executable (info) && !info->nointerp) |
b49e97c9 | 9828 | { |
3d4d4302 | 9829 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 9830 | BFD_ASSERT (s != NULL); |
eea6121a | 9831 | s->size |
b49e97c9 TS |
9832 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
9833 | s->contents | |
9834 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
9835 | } | |
861fb55a | 9836 | |
1bbce132 | 9837 | /* Figure out the size of the PLT header if we know that we |
07d6d2b8 AM |
9838 | are using it. For the sake of cache alignment always use |
9839 | a standard header whenever any standard entries are present | |
9840 | even if microMIPS entries are present as well. This also | |
9841 | lets the microMIPS header rely on the value of $v0 only set | |
9842 | by microMIPS entries, for a small size reduction. | |
1bbce132 | 9843 | |
07d6d2b8 AM |
9844 | Set symbol table entry values for symbols that use the |
9845 | address of their PLT entry now that we can calculate it. | |
1bbce132 | 9846 | |
07d6d2b8 AM |
9847 | Also create the _PROCEDURE_LINKAGE_TABLE_ symbol if we |
9848 | haven't already in _bfd_elf_create_dynamic_sections. */ | |
ce558b89 | 9849 | if (htab->root.splt && htab->plt_mips_offset + htab->plt_comp_offset != 0) |
861fb55a | 9850 | { |
1bbce132 MR |
9851 | bfd_boolean micromips_p = (MICROMIPS_P (output_bfd) |
9852 | && !htab->plt_mips_offset); | |
9853 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9854 | bfd_vma isa_bit = micromips_p; | |
861fb55a | 9855 | struct elf_link_hash_entry *h; |
1bbce132 | 9856 | bfd_vma size; |
861fb55a DJ |
9857 | |
9858 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
ce558b89 AM |
9859 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
9860 | BFD_ASSERT (htab->root.splt->size == 0); | |
1bbce132 | 9861 | |
0e1862bb | 9862 | if (htab->is_vxworks && bfd_link_pic (info)) |
1bbce132 MR |
9863 | size = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); |
9864 | else if (htab->is_vxworks) | |
9865 | size = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
9866 | else if (ABI_64_P (output_bfd)) | |
9867 | size = 4 * ARRAY_SIZE (mips_n64_exec_plt0_entry); | |
9868 | else if (ABI_N32_P (output_bfd)) | |
9869 | size = 4 * ARRAY_SIZE (mips_n32_exec_plt0_entry); | |
9870 | else if (!micromips_p) | |
9871 | size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
833794fc MR |
9872 | else if (htab->insn32) |
9873 | size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
1bbce132 MR |
9874 | else |
9875 | size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
861fb55a | 9876 | |
1bbce132 MR |
9877 | htab->plt_header_is_comp = micromips_p; |
9878 | htab->plt_header_size = size; | |
ce558b89 AM |
9879 | htab->root.splt->size = (size |
9880 | + htab->plt_mips_offset | |
9881 | + htab->plt_comp_offset); | |
9882 | htab->root.sgotplt->size = (htab->plt_got_index | |
9883 | * MIPS_ELF_GOT_SIZE (dynobj)); | |
1bbce132 MR |
9884 | |
9885 | mips_elf_link_hash_traverse (htab, mips_elf_set_plt_sym_value, info); | |
9886 | ||
9887 | if (htab->root.hplt == NULL) | |
9888 | { | |
ce558b89 | 9889 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->root.splt, |
1bbce132 MR |
9890 | "_PROCEDURE_LINKAGE_TABLE_"); |
9891 | htab->root.hplt = h; | |
9892 | if (h == NULL) | |
9893 | return FALSE; | |
9894 | } | |
9895 | ||
9896 | h = htab->root.hplt; | |
9897 | h->root.u.def.value = isa_bit; | |
9898 | h->other = other; | |
861fb55a DJ |
9899 | h->type = STT_FUNC; |
9900 | } | |
9901 | } | |
4e41d0d7 | 9902 | |
9a59ad6b | 9903 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 9904 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 9905 | |
33bb52fb RS |
9906 | mips_elf_estimate_stub_size (output_bfd, info); |
9907 | ||
9908 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
9909 | return FALSE; | |
9910 | ||
9911 | mips_elf_lay_out_lazy_stubs (info); | |
9912 | ||
b49e97c9 TS |
9913 | /* The check_relocs and adjust_dynamic_symbol entry points have |
9914 | determined the sizes of the various dynamic sections. Allocate | |
9915 | memory for them. */ | |
b34976b6 | 9916 | reltext = FALSE; |
b49e97c9 TS |
9917 | for (s = dynobj->sections; s != NULL; s = s->next) |
9918 | { | |
9919 | const char *name; | |
b49e97c9 TS |
9920 | |
9921 | /* It's OK to base decisions on the section name, because none | |
9922 | of the dynobj section names depend upon the input files. */ | |
9923 | name = bfd_get_section_name (dynobj, s); | |
9924 | ||
9925 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9926 | continue; | |
9927 | ||
0112cd26 | 9928 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 9929 | { |
c456f082 | 9930 | if (s->size != 0) |
b49e97c9 TS |
9931 | { |
9932 | const char *outname; | |
9933 | asection *target; | |
9934 | ||
9935 | /* If this relocation section applies to a read only | |
07d6d2b8 AM |
9936 | section, then we probably need a DT_TEXTREL entry. |
9937 | If the relocation section is .rel(a).dyn, we always | |
9938 | assert a DT_TEXTREL entry rather than testing whether | |
9939 | there exists a relocation to a read only section or | |
9940 | not. */ | |
b49e97c9 TS |
9941 | outname = bfd_get_section_name (output_bfd, |
9942 | s->output_section); | |
9943 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
9944 | if ((target != NULL | |
9945 | && (target->flags & SEC_READONLY) != 0 | |
9946 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 9947 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 9948 | reltext = TRUE; |
b49e97c9 TS |
9949 | |
9950 | /* We use the reloc_count field as a counter if we need | |
9951 | to copy relocs into the output file. */ | |
0a44bf69 | 9952 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 9953 | s->reloc_count = 0; |
f4416af6 AO |
9954 | |
9955 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
9956 | sort relocations, but in a different way than we do, | |
9957 | and before we're done creating relocations. Also, it | |
9958 | will move them around between input sections' | |
9959 | relocation's contents, so our sorting would be | |
9960 | broken, so don't let it run. */ | |
9961 | info->combreloc = 0; | |
b49e97c9 TS |
9962 | } |
9963 | } | |
0e1862bb | 9964 | else if (bfd_link_executable (info) |
b49e97c9 | 9965 | && ! mips_elf_hash_table (info)->use_rld_obj_head |
0112cd26 | 9966 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 9967 | { |
5108fc1b | 9968 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 9969 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 9970 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
9971 | } |
9972 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 9973 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 9974 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
ce558b89 | 9975 | else if (s == htab->root.splt) |
861fb55a DJ |
9976 | { |
9977 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
9978 | room for an extra nop to fill the delay slot. This is |
9979 | for CPUs without load interlocking. */ | |
9980 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
9981 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
9982 | s->size += 4; |
9983 | } | |
0112cd26 | 9984 | else if (! CONST_STRNEQ (name, ".init") |
ce558b89 AM |
9985 | && s != htab->root.sgot |
9986 | && s != htab->root.sgotplt | |
861fb55a | 9987 | && s != htab->sstubs |
5474d94f AM |
9988 | && s != htab->root.sdynbss |
9989 | && s != htab->root.sdynrelro) | |
b49e97c9 TS |
9990 | { |
9991 | /* It's not one of our sections, so don't allocate space. */ | |
9992 | continue; | |
9993 | } | |
9994 | ||
c456f082 | 9995 | if (s->size == 0) |
b49e97c9 | 9996 | { |
8423293d | 9997 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
9998 | continue; |
9999 | } | |
10000 | ||
c456f082 AM |
10001 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
10002 | continue; | |
10003 | ||
b49e97c9 | 10004 | /* Allocate memory for the section contents. */ |
eea6121a | 10005 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 10006 | if (s->contents == NULL) |
b49e97c9 TS |
10007 | { |
10008 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 10009 | return FALSE; |
b49e97c9 TS |
10010 | } |
10011 | } | |
10012 | ||
10013 | if (elf_hash_table (info)->dynamic_sections_created) | |
10014 | { | |
10015 | /* Add some entries to the .dynamic section. We fill in the | |
10016 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
10017 | must add the entries now so that we get the correct size for | |
5750dcec | 10018 | the .dynamic section. */ |
af5978fb RS |
10019 | |
10020 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 10021 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
10022 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
10023 | may only look at the first one they see. */ | |
0e1862bb | 10024 | if (!bfd_link_pic (info) |
af5978fb RS |
10025 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) |
10026 | return FALSE; | |
b49e97c9 | 10027 | |
0e1862bb | 10028 | if (bfd_link_executable (info) |
a5499fa4 MF |
10029 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP_REL, 0)) |
10030 | return FALSE; | |
10031 | ||
5750dcec DJ |
10032 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
10033 | used by the debugger. */ | |
0e1862bb | 10034 | if (bfd_link_executable (info) |
5750dcec DJ |
10035 | && !SGI_COMPAT (output_bfd) |
10036 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
10037 | return FALSE; | |
10038 | ||
0a44bf69 | 10039 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
10040 | info->flags |= DF_TEXTREL; |
10041 | ||
10042 | if ((info->flags & DF_TEXTREL) != 0) | |
10043 | { | |
10044 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 10045 | return FALSE; |
943284cc DJ |
10046 | |
10047 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
10048 | write out an actual text relocation; we may not, because | |
10049 | at this point we do not know whether e.g. any .eh_frame | |
10050 | absolute relocations have been converted to PC-relative. */ | |
10051 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
10052 | } |
10053 | ||
10054 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 10055 | return FALSE; |
b49e97c9 | 10056 | |
861fb55a | 10057 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 10058 | if (htab->is_vxworks) |
b49e97c9 | 10059 | { |
0a44bf69 RS |
10060 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
10061 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 10062 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
10063 | { |
10064 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
10065 | return FALSE; | |
b49e97c9 | 10066 | |
0a44bf69 RS |
10067 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
10068 | return FALSE; | |
b49e97c9 | 10069 | |
0a44bf69 RS |
10070 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
10071 | return FALSE; | |
10072 | } | |
b49e97c9 | 10073 | } |
0a44bf69 RS |
10074 | else |
10075 | { | |
db841b6f MR |
10076 | if (sreldyn && sreldyn->size > 0 |
10077 | && !bfd_is_abs_section (sreldyn->output_section)) | |
0a44bf69 RS |
10078 | { |
10079 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
10080 | return FALSE; | |
b49e97c9 | 10081 | |
0a44bf69 RS |
10082 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
10083 | return FALSE; | |
b49e97c9 | 10084 | |
0a44bf69 RS |
10085 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
10086 | return FALSE; | |
10087 | } | |
b49e97c9 | 10088 | |
0a44bf69 RS |
10089 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
10090 | return FALSE; | |
b49e97c9 | 10091 | |
0a44bf69 RS |
10092 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
10093 | return FALSE; | |
b49e97c9 | 10094 | |
0a44bf69 RS |
10095 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
10096 | return FALSE; | |
b49e97c9 | 10097 | |
0a44bf69 RS |
10098 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
10099 | return FALSE; | |
b49e97c9 | 10100 | |
0a44bf69 RS |
10101 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
10102 | return FALSE; | |
b49e97c9 | 10103 | |
0a44bf69 RS |
10104 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
10105 | return FALSE; | |
b49e97c9 | 10106 | |
0a44bf69 RS |
10107 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
10108 | return FALSE; | |
10109 | ||
10110 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
10111 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
10112 | return FALSE; | |
10113 | ||
10114 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
10115 | && (bfd_get_section_by_name | |
af0edeb8 | 10116 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 RS |
10117 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
10118 | return FALSE; | |
10119 | } | |
ce558b89 | 10120 | if (htab->root.splt->size > 0) |
861fb55a DJ |
10121 | { |
10122 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
10123 | return FALSE; | |
10124 | ||
10125 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
10126 | return FALSE; | |
10127 | ||
10128 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
10129 | return FALSE; | |
10130 | ||
10131 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
10132 | return FALSE; | |
10133 | } | |
7a2b07ff NS |
10134 | if (htab->is_vxworks |
10135 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
10136 | return FALSE; | |
b49e97c9 TS |
10137 | } |
10138 | ||
b34976b6 | 10139 | return TRUE; |
b49e97c9 TS |
10140 | } |
10141 | \f | |
81d43bff RS |
10142 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
10143 | Adjust its R_ADDEND field so that it is correct for the output file. | |
10144 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
10145 | and sections respectively; both use symbol indexes. */ | |
10146 | ||
10147 | static void | |
10148 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
10149 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
10150 | asection **local_sections, Elf_Internal_Rela *rel) | |
10151 | { | |
10152 | unsigned int r_type, r_symndx; | |
10153 | Elf_Internal_Sym *sym; | |
10154 | asection *sec; | |
10155 | ||
020d7251 | 10156 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
10157 | { |
10158 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 10159 | if (gprel16_reloc_p (r_type) |
81d43bff | 10160 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 10161 | || literal_reloc_p (r_type)) |
81d43bff RS |
10162 | { |
10163 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
10164 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
10165 | } | |
10166 | ||
10167 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
10168 | sym = local_syms + r_symndx; | |
10169 | ||
10170 | /* Adjust REL's addend to account for section merging. */ | |
0e1862bb | 10171 | if (!bfd_link_relocatable (info)) |
81d43bff RS |
10172 | { |
10173 | sec = local_sections[r_symndx]; | |
10174 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
10175 | } | |
10176 | ||
10177 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
10178 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10179 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
10180 | } | |
10181 | } | |
10182 | ||
545fd46b MR |
10183 | /* Handle relocations against symbols from removed linkonce sections, |
10184 | or sections discarded by a linker script. We use this wrapper around | |
10185 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
10186 | on 64-bit ELF targets. In this case for any relocation handled, which | |
10187 | always be the first in a triplet, the remaining two have to be processed | |
10188 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
10189 | index referred by the first reloc that applies to all the three and the | |
10190 | remaining two never refer to an object symbol. And it is the final | |
10191 | relocation (the last non-null one) that determines the output field of | |
10192 | the whole relocation so retrieve the corresponding howto structure for | |
10193 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
10194 | ||
10195 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
10196 | and therefore requires to be pasted in a loop. It also defines a block | |
10197 | and does not protect any of its arguments, hence the extra brackets. */ | |
10198 | ||
10199 | static void | |
10200 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
10201 | struct bfd_link_info *info, | |
10202 | bfd *input_bfd, asection *input_section, | |
10203 | Elf_Internal_Rela **rel, | |
10204 | const Elf_Internal_Rela **relend, | |
10205 | bfd_boolean rel_reloc, | |
10206 | reloc_howto_type *howto, | |
10207 | bfd_byte *contents) | |
10208 | { | |
10209 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
10210 | int count = bed->s->int_rels_per_ext_rel; | |
10211 | unsigned int r_type; | |
10212 | int i; | |
10213 | ||
10214 | for (i = count - 1; i > 0; i--) | |
10215 | { | |
10216 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
10217 | if (r_type != R_MIPS_NONE) | |
10218 | { | |
10219 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
10220 | break; | |
10221 | } | |
10222 | } | |
10223 | do | |
10224 | { | |
10225 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
10226 | (*rel), count, (*relend), | |
10227 | howto, i, contents); | |
10228 | } | |
10229 | while (0); | |
10230 | } | |
10231 | ||
b49e97c9 TS |
10232 | /* Relocate a MIPS ELF section. */ |
10233 | ||
b34976b6 | 10234 | bfd_boolean |
9719ad41 RS |
10235 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
10236 | bfd *input_bfd, asection *input_section, | |
10237 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
10238 | Elf_Internal_Sym *local_syms, | |
10239 | asection **local_sections) | |
b49e97c9 TS |
10240 | { |
10241 | Elf_Internal_Rela *rel; | |
10242 | const Elf_Internal_Rela *relend; | |
10243 | bfd_vma addend = 0; | |
b34976b6 | 10244 | bfd_boolean use_saved_addend_p = FALSE; |
b49e97c9 | 10245 | |
056bafd4 | 10246 | relend = relocs + input_section->reloc_count; |
b49e97c9 TS |
10247 | for (rel = relocs; rel < relend; ++rel) |
10248 | { | |
10249 | const char *name; | |
c9adbffe | 10250 | bfd_vma value = 0; |
b49e97c9 | 10251 | reloc_howto_type *howto; |
ad3d9127 | 10252 | bfd_boolean cross_mode_jump_p = FALSE; |
b34976b6 | 10253 | /* TRUE if the relocation is a RELA relocation, rather than a |
07d6d2b8 | 10254 | REL relocation. */ |
b34976b6 | 10255 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 10256 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 10257 | const char *msg; |
ab96bf03 AM |
10258 | unsigned long r_symndx; |
10259 | asection *sec; | |
749b8d9d L |
10260 | Elf_Internal_Shdr *symtab_hdr; |
10261 | struct elf_link_hash_entry *h; | |
d4730f92 | 10262 | bfd_boolean rel_reloc; |
b49e97c9 | 10263 | |
d4730f92 BS |
10264 | rel_reloc = (NEWABI_P (input_bfd) |
10265 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
10266 | relocs, rel)); | |
b49e97c9 | 10267 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 10268 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
10269 | |
10270 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 10271 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 10272 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
10273 | { |
10274 | sec = local_sections[r_symndx]; | |
10275 | h = NULL; | |
10276 | } | |
ab96bf03 AM |
10277 | else |
10278 | { | |
ab96bf03 | 10279 | unsigned long extsymoff; |
ab96bf03 | 10280 | |
ab96bf03 AM |
10281 | extsymoff = 0; |
10282 | if (!elf_bad_symtab (input_bfd)) | |
10283 | extsymoff = symtab_hdr->sh_info; | |
10284 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
10285 | while (h->root.type == bfd_link_hash_indirect | |
10286 | || h->root.type == bfd_link_hash_warning) | |
10287 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10288 | ||
10289 | sec = NULL; | |
10290 | if (h->root.type == bfd_link_hash_defined | |
10291 | || h->root.type == bfd_link_hash_defweak) | |
10292 | sec = h->root.u.def.section; | |
10293 | } | |
10294 | ||
dbaa2011 | 10295 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
10296 | { |
10297 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
10298 | input_section, &rel, &relend, | |
10299 | rel_reloc, howto, contents); | |
10300 | continue; | |
10301 | } | |
ab96bf03 | 10302 | |
4a14403c | 10303 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
10304 | { |
10305 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
10306 | 64-bit code, but make sure all their addresses are in the | |
10307 | lowermost or uppermost 32-bit section of the 64-bit address | |
10308 | space. Thus, when they use an R_MIPS_64 they mean what is | |
10309 | usually meant by R_MIPS_32, with the exception that the | |
10310 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 10311 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
10312 | |
10313 | /* On big-endian systems, we need to lie about the position | |
10314 | of the reloc. */ | |
10315 | if (bfd_big_endian (input_bfd)) | |
10316 | rel->r_offset += 4; | |
10317 | } | |
b49e97c9 TS |
10318 | |
10319 | if (!use_saved_addend_p) | |
10320 | { | |
b49e97c9 TS |
10321 | /* If these relocations were originally of the REL variety, |
10322 | we must pull the addend out of the field that will be | |
10323 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
10324 | RELA relocation. */ |
10325 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
10326 | relocs, rel)) | |
b49e97c9 | 10327 | { |
b34976b6 | 10328 | rela_relocation_p = FALSE; |
c224138d RS |
10329 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
10330 | howto, contents); | |
738e5348 RS |
10331 | if (hi16_reloc_p (r_type) |
10332 | || (got16_reloc_p (r_type) | |
b49e97c9 | 10333 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 10334 | local_sections))) |
b49e97c9 | 10335 | { |
c224138d RS |
10336 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
10337 | contents, &addend)) | |
749b8d9d | 10338 | { |
749b8d9d L |
10339 | if (h) |
10340 | name = h->root.root.string; | |
10341 | else | |
10342 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
10343 | local_syms + r_symndx, | |
10344 | sec); | |
4eca0228 | 10345 | _bfd_error_handler |
695344c0 | 10346 | /* xgettext:c-format */ |
2c1c9679 | 10347 | (_("%pB: can't find matching LO16 reloc against `%s'" |
2dcf00ce | 10348 | " for %s at %#" PRIx64 " in section `%pA'"), |
c08bb8dd | 10349 | input_bfd, name, |
2dcf00ce | 10350 | howto->name, (uint64_t) rel->r_offset, input_section); |
749b8d9d | 10351 | } |
b49e97c9 | 10352 | } |
30ac9238 RS |
10353 | else |
10354 | addend <<= howto->rightshift; | |
b49e97c9 TS |
10355 | } |
10356 | else | |
10357 | addend = rel->r_addend; | |
81d43bff RS |
10358 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
10359 | local_syms, local_sections, rel); | |
b49e97c9 TS |
10360 | } |
10361 | ||
0e1862bb | 10362 | if (bfd_link_relocatable (info)) |
b49e97c9 | 10363 | { |
4a14403c | 10364 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
10365 | && bfd_big_endian (input_bfd)) |
10366 | rel->r_offset -= 4; | |
10367 | ||
81d43bff | 10368 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 10369 | { |
81d43bff | 10370 | addend += rel->r_addend; |
738e5348 | 10371 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
10372 | addend = mips_elf_high (addend); |
10373 | else if (r_type == R_MIPS_HIGHER) | |
10374 | addend = mips_elf_higher (addend); | |
10375 | else if (r_type == R_MIPS_HIGHEST) | |
10376 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
10377 | else |
10378 | addend >>= howto->rightshift; | |
b49e97c9 | 10379 | |
30ac9238 RS |
10380 | /* We use the source mask, rather than the destination |
10381 | mask because the place to which we are writing will be | |
10382 | source of the addend in the final link. */ | |
b49e97c9 TS |
10383 | addend &= howto->src_mask; |
10384 | ||
5a659663 | 10385 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10386 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10387 | ABI. Here, we need to update the addend. It would be | |
10388 | possible to get away with just using the R_MIPS_32 reloc | |
10389 | but for endianness. */ | |
10390 | { | |
10391 | bfd_vma sign_bits; | |
10392 | bfd_vma low_bits; | |
10393 | bfd_vma high_bits; | |
10394 | ||
10395 | if (addend & ((bfd_vma) 1 << 31)) | |
10396 | #ifdef BFD64 | |
10397 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10398 | #else | |
10399 | sign_bits = -1; | |
10400 | #endif | |
10401 | else | |
10402 | sign_bits = 0; | |
10403 | ||
10404 | /* If we don't know that we have a 64-bit type, | |
10405 | do two separate stores. */ | |
10406 | if (bfd_big_endian (input_bfd)) | |
10407 | { | |
10408 | /* Store the sign-bits (which are most significant) | |
10409 | first. */ | |
10410 | low_bits = sign_bits; | |
10411 | high_bits = addend; | |
10412 | } | |
10413 | else | |
10414 | { | |
10415 | low_bits = addend; | |
10416 | high_bits = sign_bits; | |
10417 | } | |
10418 | bfd_put_32 (input_bfd, low_bits, | |
10419 | contents + rel->r_offset); | |
10420 | bfd_put_32 (input_bfd, high_bits, | |
10421 | contents + rel->r_offset + 4); | |
10422 | continue; | |
10423 | } | |
10424 | ||
10425 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
10426 | input_bfd, input_section, | |
b34976b6 AM |
10427 | contents, FALSE)) |
10428 | return FALSE; | |
b49e97c9 TS |
10429 | } |
10430 | ||
10431 | /* Go on to the next relocation. */ | |
10432 | continue; | |
10433 | } | |
10434 | ||
10435 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
10436 | relocations for the same offset. In that case we are | |
10437 | supposed to treat the output of each relocation as the addend | |
10438 | for the next. */ | |
10439 | if (rel + 1 < relend | |
10440 | && rel->r_offset == rel[1].r_offset | |
10441 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 10442 | use_saved_addend_p = TRUE; |
b49e97c9 | 10443 | else |
b34976b6 | 10444 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
10445 | |
10446 | /* Figure out what value we are supposed to relocate. */ | |
10447 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
47275900 MR |
10448 | input_section, contents, |
10449 | info, rel, addend, howto, | |
10450 | local_syms, local_sections, | |
10451 | &value, &name, &cross_mode_jump_p, | |
bce03d3d | 10452 | use_saved_addend_p)) |
b49e97c9 TS |
10453 | { |
10454 | case bfd_reloc_continue: | |
10455 | /* There's nothing to do. */ | |
10456 | continue; | |
10457 | ||
10458 | case bfd_reloc_undefined: | |
10459 | /* mips_elf_calculate_relocation already called the | |
10460 | undefined_symbol callback. There's no real point in | |
10461 | trying to perform the relocation at this point, so we | |
10462 | just skip ahead to the next relocation. */ | |
10463 | continue; | |
10464 | ||
10465 | case bfd_reloc_notsupported: | |
10466 | msg = _("internal error: unsupported relocation error"); | |
10467 | info->callbacks->warning | |
10468 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 10469 | return FALSE; |
b49e97c9 TS |
10470 | |
10471 | case bfd_reloc_overflow: | |
10472 | if (use_saved_addend_p) | |
10473 | /* Ignore overflow until we reach the last relocation for | |
10474 | a given location. */ | |
10475 | ; | |
10476 | else | |
10477 | { | |
0e53d9da AN |
10478 | struct mips_elf_link_hash_table *htab; |
10479 | ||
10480 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10481 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10482 | BFD_ASSERT (name != NULL); |
0e53d9da | 10483 | if (!htab->small_data_overflow_reported |
9684f078 | 10484 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 10485 | || literal_reloc_p (howto->type))) |
0e53d9da | 10486 | { |
91d6fa6a NC |
10487 | msg = _("small-data section exceeds 64KB;" |
10488 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
10489 | |
10490 | htab->small_data_overflow_reported = TRUE; | |
10491 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
10492 | } | |
1a72702b AM |
10493 | (*info->callbacks->reloc_overflow) |
10494 | (info, NULL, name, howto->name, (bfd_vma) 0, | |
10495 | input_bfd, input_section, rel->r_offset); | |
b49e97c9 TS |
10496 | } |
10497 | break; | |
10498 | ||
10499 | case bfd_reloc_ok: | |
10500 | break; | |
10501 | ||
df58fc94 | 10502 | case bfd_reloc_outofrange: |
7db9a74e | 10503 | msg = NULL; |
df58fc94 | 10504 | if (jal_reloc_p (howto->type)) |
9d862524 | 10505 | msg = (cross_mode_jump_p |
2c1c9679 | 10506 | ? _("cannot convert a jump to JALX " |
9d862524 MR |
10507 | "for a non-word-aligned address") |
10508 | : (howto->type == R_MIPS16_26 | |
2c1c9679 AM |
10509 | ? _("jump to a non-word-aligned address") |
10510 | : _("jump to a non-instruction-aligned address"))); | |
99aefae6 | 10511 | else if (b_reloc_p (howto->type)) |
a6ebf616 | 10512 | msg = (cross_mode_jump_p |
2c1c9679 | 10513 | ? _("cannot convert a branch to JALX " |
a6ebf616 | 10514 | "for a non-word-aligned address") |
2c1c9679 | 10515 | : _("branch to a non-instruction-aligned address")); |
7db9a74e MR |
10516 | else if (aligned_pcrel_reloc_p (howto->type)) |
10517 | msg = _("PC-relative load from unaligned address"); | |
10518 | if (msg) | |
df58fc94 | 10519 | { |
de341542 | 10520 | info->callbacks->einfo |
ed53407e MR |
10521 | ("%X%H: %s\n", input_bfd, input_section, rel->r_offset, msg); |
10522 | break; | |
7361da2c | 10523 | } |
df58fc94 RS |
10524 | /* Fall through. */ |
10525 | ||
b49e97c9 TS |
10526 | default: |
10527 | abort (); | |
10528 | break; | |
10529 | } | |
10530 | ||
10531 | /* If we've got another relocation for the address, keep going | |
10532 | until we reach the last one. */ | |
10533 | if (use_saved_addend_p) | |
10534 | { | |
10535 | addend = value; | |
10536 | continue; | |
10537 | } | |
10538 | ||
4a14403c | 10539 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10540 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10541 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
10542 | that calculated the right value. Now, however, we | |
10543 | sign-extend the 32-bit result to 64-bits, and store it as a | |
10544 | 64-bit value. We are especially generous here in that we | |
10545 | go to extreme lengths to support this usage on systems with | |
10546 | only a 32-bit VMA. */ | |
10547 | { | |
10548 | bfd_vma sign_bits; | |
10549 | bfd_vma low_bits; | |
10550 | bfd_vma high_bits; | |
10551 | ||
10552 | if (value & ((bfd_vma) 1 << 31)) | |
10553 | #ifdef BFD64 | |
10554 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10555 | #else | |
10556 | sign_bits = -1; | |
10557 | #endif | |
10558 | else | |
10559 | sign_bits = 0; | |
10560 | ||
10561 | /* If we don't know that we have a 64-bit type, | |
10562 | do two separate stores. */ | |
10563 | if (bfd_big_endian (input_bfd)) | |
10564 | { | |
10565 | /* Undo what we did above. */ | |
10566 | rel->r_offset -= 4; | |
10567 | /* Store the sign-bits (which are most significant) | |
10568 | first. */ | |
10569 | low_bits = sign_bits; | |
10570 | high_bits = value; | |
10571 | } | |
10572 | else | |
10573 | { | |
10574 | low_bits = value; | |
10575 | high_bits = sign_bits; | |
10576 | } | |
10577 | bfd_put_32 (input_bfd, low_bits, | |
10578 | contents + rel->r_offset); | |
10579 | bfd_put_32 (input_bfd, high_bits, | |
10580 | contents + rel->r_offset + 4); | |
10581 | continue; | |
10582 | } | |
10583 | ||
10584 | /* Actually perform the relocation. */ | |
10585 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
10586 | input_bfd, input_section, | |
38a7df63 | 10587 | contents, cross_mode_jump_p)) |
b34976b6 | 10588 | return FALSE; |
b49e97c9 TS |
10589 | } |
10590 | ||
b34976b6 | 10591 | return TRUE; |
b49e97c9 TS |
10592 | } |
10593 | \f | |
861fb55a DJ |
10594 | /* A function that iterates over each entry in la25_stubs and fills |
10595 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
10596 | ||
10597 | static int | |
10598 | mips_elf_create_la25_stub (void **slot, void *data) | |
10599 | { | |
10600 | struct mips_htab_traverse_info *hti; | |
10601 | struct mips_elf_link_hash_table *htab; | |
10602 | struct mips_elf_la25_stub *stub; | |
10603 | asection *s; | |
10604 | bfd_byte *loc; | |
10605 | bfd_vma offset, target, target_high, target_low; | |
10606 | ||
10607 | stub = (struct mips_elf_la25_stub *) *slot; | |
10608 | hti = (struct mips_htab_traverse_info *) data; | |
10609 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 10610 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
10611 | |
10612 | /* Create the section contents, if we haven't already. */ | |
10613 | s = stub->stub_section; | |
10614 | loc = s->contents; | |
10615 | if (loc == NULL) | |
10616 | { | |
10617 | loc = bfd_malloc (s->size); | |
10618 | if (loc == NULL) | |
10619 | { | |
10620 | hti->error = TRUE; | |
10621 | return FALSE; | |
10622 | } | |
10623 | s->contents = loc; | |
10624 | } | |
10625 | ||
10626 | /* Work out where in the section this stub should go. */ | |
10627 | offset = stub->offset; | |
10628 | ||
10629 | /* Work out the target address. */ | |
8f0c309a CLT |
10630 | target = mips_elf_get_la25_target (stub, &s); |
10631 | target += s->output_section->vma + s->output_offset; | |
10632 | ||
861fb55a DJ |
10633 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
10634 | target_low = (target & 0xffff); | |
10635 | ||
10636 | if (stub->stub_section != htab->strampoline) | |
10637 | { | |
df58fc94 | 10638 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
10639 | of the section and write the two instructions at the end. */ |
10640 | memset (loc, 0, offset); | |
10641 | loc += offset; | |
df58fc94 RS |
10642 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10643 | { | |
d21911ea MR |
10644 | bfd_put_micromips_32 (hti->output_bfd, |
10645 | LA25_LUI_MICROMIPS (target_high), | |
10646 | loc); | |
10647 | bfd_put_micromips_32 (hti->output_bfd, | |
10648 | LA25_ADDIU_MICROMIPS (target_low), | |
10649 | loc + 4); | |
df58fc94 RS |
10650 | } |
10651 | else | |
10652 | { | |
10653 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
10654 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
10655 | } | |
861fb55a DJ |
10656 | } |
10657 | else | |
10658 | { | |
10659 | /* This is trampoline. */ | |
10660 | loc += offset; | |
df58fc94 RS |
10661 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10662 | { | |
d21911ea MR |
10663 | bfd_put_micromips_32 (hti->output_bfd, |
10664 | LA25_LUI_MICROMIPS (target_high), loc); | |
10665 | bfd_put_micromips_32 (hti->output_bfd, | |
10666 | LA25_J_MICROMIPS (target), loc + 4); | |
10667 | bfd_put_micromips_32 (hti->output_bfd, | |
10668 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
10669 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
10670 | } | |
10671 | else | |
10672 | { | |
10673 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
10674 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
10675 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
10676 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
10677 | } | |
861fb55a DJ |
10678 | } |
10679 | return TRUE; | |
10680 | } | |
10681 | ||
b49e97c9 TS |
10682 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
10683 | adjust it appropriately now. */ | |
10684 | ||
10685 | static void | |
9719ad41 RS |
10686 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
10687 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10688 | { |
10689 | /* The linker script takes care of providing names and values for | |
10690 | these, but we must place them into the right sections. */ | |
10691 | static const char* const text_section_symbols[] = { | |
10692 | "_ftext", | |
10693 | "_etext", | |
10694 | "__dso_displacement", | |
10695 | "__elf_header", | |
10696 | "__program_header_table", | |
10697 | NULL | |
10698 | }; | |
10699 | ||
10700 | static const char* const data_section_symbols[] = { | |
10701 | "_fdata", | |
10702 | "_edata", | |
10703 | "_end", | |
10704 | "_fbss", | |
10705 | NULL | |
10706 | }; | |
10707 | ||
10708 | const char* const *p; | |
10709 | int i; | |
10710 | ||
10711 | for (i = 0; i < 2; ++i) | |
10712 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
10713 | *p; | |
10714 | ++p) | |
10715 | if (strcmp (*p, name) == 0) | |
10716 | { | |
10717 | /* All of these symbols are given type STT_SECTION by the | |
10718 | IRIX6 linker. */ | |
10719 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 10720 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
10721 | |
10722 | /* The IRIX linker puts these symbols in special sections. */ | |
10723 | if (i == 0) | |
10724 | sym->st_shndx = SHN_MIPS_TEXT; | |
10725 | else | |
10726 | sym->st_shndx = SHN_MIPS_DATA; | |
10727 | ||
10728 | break; | |
10729 | } | |
10730 | } | |
10731 | ||
10732 | /* Finish up dynamic symbol handling. We set the contents of various | |
10733 | dynamic sections here. */ | |
10734 | ||
b34976b6 | 10735 | bfd_boolean |
9719ad41 RS |
10736 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
10737 | struct bfd_link_info *info, | |
10738 | struct elf_link_hash_entry *h, | |
10739 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10740 | { |
10741 | bfd *dynobj; | |
b49e97c9 | 10742 | asection *sgot; |
f4416af6 | 10743 | struct mips_got_info *g, *gg; |
b49e97c9 | 10744 | const char *name; |
3d6746ca | 10745 | int idx; |
5108fc1b | 10746 | struct mips_elf_link_hash_table *htab; |
738e5348 | 10747 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 10748 | |
5108fc1b | 10749 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 10750 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10751 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 10752 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 10753 | |
861fb55a DJ |
10754 | BFD_ASSERT (!htab->is_vxworks); |
10755 | ||
1bbce132 MR |
10756 | if (h->plt.plist != NULL |
10757 | && (h->plt.plist->mips_offset != MINUS_ONE | |
10758 | || h->plt.plist->comp_offset != MINUS_ONE)) | |
861fb55a DJ |
10759 | { |
10760 | /* We've decided to create a PLT entry for this symbol. */ | |
10761 | bfd_byte *loc; | |
1bbce132 | 10762 | bfd_vma header_address, got_address; |
861fb55a | 10763 | bfd_vma got_address_high, got_address_low, load; |
1bbce132 MR |
10764 | bfd_vma got_index; |
10765 | bfd_vma isa_bit; | |
10766 | ||
10767 | got_index = h->plt.plist->gotplt_index; | |
861fb55a DJ |
10768 | |
10769 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10770 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 10771 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 10772 | BFD_ASSERT (got_index != MINUS_ONE); |
861fb55a DJ |
10773 | BFD_ASSERT (!h->def_regular); |
10774 | ||
10775 | /* Calculate the address of the PLT header. */ | |
1bbce132 | 10776 | isa_bit = htab->plt_header_is_comp; |
ce558b89 AM |
10777 | header_address = (htab->root.splt->output_section->vma |
10778 | + htab->root.splt->output_offset + isa_bit); | |
861fb55a DJ |
10779 | |
10780 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
10781 | got_address = (htab->root.sgotplt->output_section->vma |
10782 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
10783 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); |
10784 | ||
861fb55a DJ |
10785 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; |
10786 | got_address_low = got_address & 0xffff; | |
10787 | ||
789ff5b6 MR |
10788 | /* The PLT sequence is not safe for N64 if .got.plt entry's address |
10789 | cannot be loaded in two instructions. */ | |
10790 | if (ABI_64_P (output_bfd) | |
10791 | && ((got_address + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
10792 | { | |
10793 | _bfd_error_handler | |
10794 | /* xgettext:c-format */ | |
10795 | (_("%pB: `%pA' entry VMA of %#" PRIx64 " outside the 32-bit range " | |
10796 | "supported; consider using `-Ttext-segment=...'"), | |
10797 | output_bfd, | |
10798 | htab->root.sgotplt->output_section, | |
10799 | (int64_t) got_address); | |
10800 | bfd_set_error (bfd_error_no_error); | |
10801 | return FALSE; | |
10802 | } | |
10803 | ||
861fb55a | 10804 | /* Initially point the .got.plt entry at the PLT header. */ |
6a382bce MR |
10805 | loc = (htab->root.sgotplt->contents |
10806 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); | |
861fb55a DJ |
10807 | if (ABI_64_P (output_bfd)) |
10808 | bfd_put_64 (output_bfd, header_address, loc); | |
10809 | else | |
10810 | bfd_put_32 (output_bfd, header_address, loc); | |
10811 | ||
1bbce132 | 10812 | /* Now handle the PLT itself. First the standard entry (the order |
07d6d2b8 | 10813 | does not matter, we just have to pick one). */ |
1bbce132 MR |
10814 | if (h->plt.plist->mips_offset != MINUS_ONE) |
10815 | { | |
10816 | const bfd_vma *plt_entry; | |
10817 | bfd_vma plt_offset; | |
861fb55a | 10818 | |
1bbce132 | 10819 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; |
861fb55a | 10820 | |
ce558b89 | 10821 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
6d30f5b2 | 10822 | |
1bbce132 | 10823 | /* Find out where the .plt entry should go. */ |
ce558b89 | 10824 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
10825 | |
10826 | /* Pick the load opcode. */ | |
10827 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
10828 | ||
10829 | /* Fill in the PLT entry itself. */ | |
7361da2c AB |
10830 | |
10831 | if (MIPSR6_P (output_bfd)) | |
10832 | plt_entry = mipsr6_exec_plt_entry; | |
10833 | else | |
10834 | plt_entry = mips_exec_plt_entry; | |
1bbce132 MR |
10835 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); |
10836 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, | |
10837 | loc + 4); | |
10838 | ||
10839 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
10840 | { | |
10841 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
10842 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10843 | } | |
10844 | else | |
10845 | { | |
10846 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
10847 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, | |
10848 | loc + 12); | |
10849 | } | |
6d30f5b2 | 10850 | } |
1bbce132 MR |
10851 | |
10852 | /* Now the compressed entry. They come after any standard ones. */ | |
10853 | if (h->plt.plist->comp_offset != MINUS_ONE) | |
6d30f5b2 | 10854 | { |
1bbce132 MR |
10855 | bfd_vma plt_offset; |
10856 | ||
10857 | plt_offset = (htab->plt_header_size + htab->plt_mips_offset | |
10858 | + h->plt.plist->comp_offset); | |
10859 | ||
ce558b89 | 10860 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
1bbce132 MR |
10861 | |
10862 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 10863 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
10864 | |
10865 | /* Fill in the PLT entry itself. */ | |
833794fc MR |
10866 | if (!MICROMIPS_P (output_bfd)) |
10867 | { | |
10868 | const bfd_vma *plt_entry = mips16_o32_exec_plt_entry; | |
10869 | ||
10870 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
10871 | bfd_put_16 (output_bfd, plt_entry[1], loc + 2); | |
10872 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10873 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
10874 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10875 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10876 | bfd_put_32 (output_bfd, got_address, loc + 12); | |
10877 | } | |
10878 | else if (htab->insn32) | |
10879 | { | |
10880 | const bfd_vma *plt_entry = micromips_insn32_o32_exec_plt_entry; | |
10881 | ||
10882 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
10883 | bfd_put_16 (output_bfd, got_address_high, loc + 2); | |
10884 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10885 | bfd_put_16 (output_bfd, got_address_low, loc + 6); | |
10886 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10887 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10888 | bfd_put_16 (output_bfd, plt_entry[6], loc + 12); | |
10889 | bfd_put_16 (output_bfd, got_address_low, loc + 14); | |
10890 | } | |
10891 | else | |
1bbce132 MR |
10892 | { |
10893 | const bfd_vma *plt_entry = micromips_o32_exec_plt_entry; | |
10894 | bfd_signed_vma gotpc_offset; | |
10895 | bfd_vma loc_address; | |
10896 | ||
10897 | BFD_ASSERT (got_address % 4 == 0); | |
10898 | ||
ce558b89 AM |
10899 | loc_address = (htab->root.splt->output_section->vma |
10900 | + htab->root.splt->output_offset + plt_offset); | |
1bbce132 MR |
10901 | gotpc_offset = got_address - ((loc_address | 3) ^ 3); |
10902 | ||
10903 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
10904 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
10905 | { | |
4eca0228 | 10906 | _bfd_error_handler |
695344c0 | 10907 | /* xgettext:c-format */ |
2dcf00ce | 10908 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
1bbce132 MR |
10909 | "beyond the range of ADDIUPC"), |
10910 | output_bfd, | |
ce558b89 | 10911 | htab->root.sgotplt->output_section, |
2dcf00ce | 10912 | (int64_t) gotpc_offset, |
c08bb8dd | 10913 | htab->root.splt->output_section); |
1bbce132 MR |
10914 | bfd_set_error (bfd_error_no_error); |
10915 | return FALSE; | |
10916 | } | |
10917 | bfd_put_16 (output_bfd, | |
10918 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
10919 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
10920 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10921 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
10922 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10923 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10924 | } | |
6d30f5b2 | 10925 | } |
861fb55a DJ |
10926 | |
10927 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 10928 | mips_elf_output_dynamic_relocation (output_bfd, htab->root.srelplt, |
1bbce132 | 10929 | got_index - 2, h->dynindx, |
861fb55a DJ |
10930 | R_MIPS_JUMP_SLOT, got_address); |
10931 | ||
10932 | /* We distinguish between PLT entries and lazy-binding stubs by | |
10933 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
10934 | flag and leave the value if there are any relocations in the | |
10935 | binary where pointer equality matters. */ | |
10936 | sym->st_shndx = SHN_UNDEF; | |
10937 | if (h->pointer_equality_needed) | |
1bbce132 | 10938 | sym->st_other = ELF_ST_SET_MIPS_PLT (sym->st_other); |
861fb55a | 10939 | else |
1bbce132 MR |
10940 | { |
10941 | sym->st_value = 0; | |
10942 | sym->st_other = 0; | |
10943 | } | |
861fb55a | 10944 | } |
1bbce132 MR |
10945 | |
10946 | if (h->plt.plist != NULL && h->plt.plist->stub_offset != MINUS_ONE) | |
b49e97c9 | 10947 | { |
861fb55a | 10948 | /* We've decided to create a lazy-binding stub. */ |
1bbce132 MR |
10949 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); |
10950 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
10951 | bfd_vma stub_size = htab->function_stub_size; | |
5108fc1b | 10952 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
1bbce132 MR |
10953 | bfd_vma isa_bit = micromips_p; |
10954 | bfd_vma stub_big_size; | |
10955 | ||
833794fc | 10956 | if (!micromips_p) |
1bbce132 | 10957 | stub_big_size = MIPS_FUNCTION_STUB_BIG_SIZE; |
833794fc MR |
10958 | else if (htab->insn32) |
10959 | stub_big_size = MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE; | |
10960 | else | |
10961 | stub_big_size = MICROMIPS_FUNCTION_STUB_BIG_SIZE; | |
b49e97c9 TS |
10962 | |
10963 | /* This symbol has a stub. Set it up. */ | |
10964 | ||
10965 | BFD_ASSERT (h->dynindx != -1); | |
10966 | ||
1bbce132 | 10967 | BFD_ASSERT (stub_size == stub_big_size || h->dynindx <= 0xffff); |
3d6746ca DD |
10968 | |
10969 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
10970 | sign extension at runtime in the stub, resulting in a negative |
10971 | index value. */ | |
10972 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 10973 | return FALSE; |
b49e97c9 TS |
10974 | |
10975 | /* Fill the stub. */ | |
1bbce132 MR |
10976 | if (micromips_p) |
10977 | { | |
10978 | idx = 0; | |
10979 | bfd_put_micromips_32 (output_bfd, STUB_LW_MICROMIPS (output_bfd), | |
10980 | stub + idx); | |
10981 | idx += 4; | |
833794fc MR |
10982 | if (htab->insn32) |
10983 | { | |
10984 | bfd_put_micromips_32 (output_bfd, | |
40fc1451 | 10985 | STUB_MOVE32_MICROMIPS, stub + idx); |
833794fc MR |
10986 | idx += 4; |
10987 | } | |
10988 | else | |
10989 | { | |
10990 | bfd_put_16 (output_bfd, STUB_MOVE_MICROMIPS, stub + idx); | |
10991 | idx += 2; | |
10992 | } | |
1bbce132 MR |
10993 | if (stub_size == stub_big_size) |
10994 | { | |
10995 | long dynindx_hi = (h->dynindx >> 16) & 0x7fff; | |
10996 | ||
10997 | bfd_put_micromips_32 (output_bfd, | |
10998 | STUB_LUI_MICROMIPS (dynindx_hi), | |
10999 | stub + idx); | |
11000 | idx += 4; | |
11001 | } | |
833794fc MR |
11002 | if (htab->insn32) |
11003 | { | |
11004 | bfd_put_micromips_32 (output_bfd, STUB_JALR32_MICROMIPS, | |
11005 | stub + idx); | |
11006 | idx += 4; | |
11007 | } | |
11008 | else | |
11009 | { | |
11010 | bfd_put_16 (output_bfd, STUB_JALR_MICROMIPS, stub + idx); | |
11011 | idx += 2; | |
11012 | } | |
1bbce132 MR |
11013 | |
11014 | /* If a large stub is not required and sign extension is not a | |
11015 | problem, then use legacy code in the stub. */ | |
11016 | if (stub_size == stub_big_size) | |
11017 | bfd_put_micromips_32 (output_bfd, | |
11018 | STUB_ORI_MICROMIPS (h->dynindx & 0xffff), | |
11019 | stub + idx); | |
11020 | else if (h->dynindx & ~0x7fff) | |
11021 | bfd_put_micromips_32 (output_bfd, | |
11022 | STUB_LI16U_MICROMIPS (h->dynindx & 0xffff), | |
11023 | stub + idx); | |
11024 | else | |
11025 | bfd_put_micromips_32 (output_bfd, | |
11026 | STUB_LI16S_MICROMIPS (output_bfd, | |
11027 | h->dynindx), | |
11028 | stub + idx); | |
11029 | } | |
3d6746ca | 11030 | else |
1bbce132 MR |
11031 | { |
11032 | idx = 0; | |
11033 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
11034 | idx += 4; | |
40fc1451 | 11035 | bfd_put_32 (output_bfd, STUB_MOVE, stub + idx); |
1bbce132 MR |
11036 | idx += 4; |
11037 | if (stub_size == stub_big_size) | |
11038 | { | |
11039 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), | |
11040 | stub + idx); | |
11041 | idx += 4; | |
11042 | } | |
11043 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
11044 | idx += 4; | |
11045 | ||
11046 | /* If a large stub is not required and sign extension is not a | |
11047 | problem, then use legacy code in the stub. */ | |
11048 | if (stub_size == stub_big_size) | |
11049 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), | |
11050 | stub + idx); | |
11051 | else if (h->dynindx & ~0x7fff) | |
11052 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), | |
11053 | stub + idx); | |
11054 | else | |
11055 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), | |
11056 | stub + idx); | |
11057 | } | |
5108fc1b | 11058 | |
1bbce132 MR |
11059 | BFD_ASSERT (h->plt.plist->stub_offset <= htab->sstubs->size); |
11060 | memcpy (htab->sstubs->contents + h->plt.plist->stub_offset, | |
11061 | stub, stub_size); | |
b49e97c9 | 11062 | |
1bbce132 | 11063 | /* Mark the symbol as undefined. stub_offset != -1 occurs |
b49e97c9 TS |
11064 | only for the referenced symbol. */ |
11065 | sym->st_shndx = SHN_UNDEF; | |
11066 | ||
11067 | /* The run-time linker uses the st_value field of the symbol | |
11068 | to reset the global offset table entry for this external | |
11069 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
11070 | sym->st_value = (htab->sstubs->output_section->vma |
11071 | + htab->sstubs->output_offset | |
1bbce132 MR |
11072 | + h->plt.plist->stub_offset |
11073 | + isa_bit); | |
11074 | sym->st_other = other; | |
b49e97c9 TS |
11075 | } |
11076 | ||
738e5348 RS |
11077 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
11078 | refer to the stub, since only the stub uses the standard calling | |
11079 | conventions. */ | |
11080 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
11081 | { | |
11082 | BFD_ASSERT (hmips->need_fn_stub); | |
11083 | sym->st_value = (hmips->fn_stub->output_section->vma | |
11084 | + hmips->fn_stub->output_offset); | |
11085 | sym->st_size = hmips->fn_stub->size; | |
11086 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
11087 | } | |
11088 | ||
b49e97c9 | 11089 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 11090 | || h->forced_local); |
b49e97c9 | 11091 | |
ce558b89 | 11092 | sgot = htab->root.sgot; |
a8028dd0 | 11093 | g = htab->got_info; |
b49e97c9 TS |
11094 | BFD_ASSERT (g != NULL); |
11095 | ||
11096 | /* Run through the global symbol table, creating GOT entries for all | |
11097 | the symbols that need them. */ | |
020d7251 | 11098 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
11099 | { |
11100 | bfd_vma offset; | |
11101 | bfd_vma value; | |
11102 | ||
6eaa6adc | 11103 | value = sym->st_value; |
13fbec83 | 11104 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
b49e97c9 TS |
11105 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
11106 | } | |
11107 | ||
e641e783 | 11108 | if (hmips->global_got_area != GGA_NONE && g->next) |
f4416af6 AO |
11109 | { |
11110 | struct mips_got_entry e, *p; | |
0626d451 | 11111 | bfd_vma entry; |
f4416af6 | 11112 | bfd_vma offset; |
f4416af6 AO |
11113 | |
11114 | gg = g; | |
11115 | ||
11116 | e.abfd = output_bfd; | |
11117 | e.symndx = -1; | |
738e5348 | 11118 | e.d.h = hmips; |
9ab066b4 | 11119 | e.tls_type = GOT_TLS_NONE; |
143d77c5 | 11120 | |
f4416af6 AO |
11121 | for (g = g->next; g->next != gg; g = g->next) |
11122 | { | |
11123 | if (g->got_entries | |
11124 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
11125 | &e))) | |
11126 | { | |
11127 | offset = p->gotidx; | |
ce558b89 | 11128 | BFD_ASSERT (offset > 0 && offset < htab->root.sgot->size); |
0e1862bb | 11129 | if (bfd_link_pic (info) |
0626d451 RS |
11130 | || (elf_hash_table (info)->dynamic_sections_created |
11131 | && p->d.h != NULL | |
f5385ebf AM |
11132 | && p->d.h->root.def_dynamic |
11133 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
11134 | { |
11135 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
11136 | the various compatibility problems, it's easier to mock | |
11137 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
11138 | mips_elf_create_dynamic_relocation to calculate the | |
11139 | appropriate addend. */ | |
11140 | Elf_Internal_Rela rel[3]; | |
11141 | ||
11142 | memset (rel, 0, sizeof (rel)); | |
11143 | if (ABI_64_P (output_bfd)) | |
11144 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
11145 | else | |
11146 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
11147 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
11148 | ||
11149 | entry = 0; | |
11150 | if (! (mips_elf_create_dynamic_relocation | |
11151 | (output_bfd, info, rel, | |
11152 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
11153 | return FALSE; | |
11154 | } | |
11155 | else | |
11156 | entry = sym->st_value; | |
11157 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
11158 | } |
11159 | } | |
11160 | } | |
11161 | ||
b49e97c9 TS |
11162 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
11163 | name = h->root.root.string; | |
9637f6ef | 11164 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 11165 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
11166 | sym->st_shndx = SHN_ABS; |
11167 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
11168 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
11169 | { | |
11170 | sym->st_shndx = SHN_ABS; | |
11171 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11172 | sym->st_value = 1; | |
11173 | } | |
b49e97c9 TS |
11174 | else if (SGI_COMPAT (output_bfd)) |
11175 | { | |
11176 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
11177 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
11178 | { | |
11179 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11180 | sym->st_other = STO_PROTECTED; | |
11181 | sym->st_value = 0; | |
11182 | sym->st_shndx = SHN_MIPS_DATA; | |
11183 | } | |
11184 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
11185 | { | |
11186 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11187 | sym->st_other = STO_PROTECTED; | |
11188 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
11189 | sym->st_shndx = SHN_ABS; | |
11190 | } | |
11191 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
11192 | { | |
11193 | if (h->type == STT_FUNC) | |
11194 | sym->st_shndx = SHN_MIPS_TEXT; | |
11195 | else if (h->type == STT_OBJECT) | |
11196 | sym->st_shndx = SHN_MIPS_DATA; | |
11197 | } | |
11198 | } | |
11199 | ||
861fb55a DJ |
11200 | /* Emit a copy reloc, if needed. */ |
11201 | if (h->needs_copy) | |
11202 | { | |
11203 | asection *s; | |
11204 | bfd_vma symval; | |
11205 | ||
11206 | BFD_ASSERT (h->dynindx != -1); | |
11207 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
11208 | ||
11209 | s = mips_elf_rel_dyn_section (info, FALSE); | |
11210 | symval = (h->root.u.def.section->output_section->vma | |
11211 | + h->root.u.def.section->output_offset | |
11212 | + h->root.u.def.value); | |
11213 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
11214 | h->dynindx, R_MIPS_COPY, symval); | |
11215 | } | |
11216 | ||
b49e97c9 TS |
11217 | /* Handle the IRIX6-specific symbols. */ |
11218 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
11219 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
11220 | ||
cbf8d970 MR |
11221 | /* Keep dynamic compressed symbols odd. This allows the dynamic linker |
11222 | to treat compressed symbols like any other. */ | |
30c09090 | 11223 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
11224 | { |
11225 | BFD_ASSERT (sym->st_value & 1); | |
11226 | sym->st_other -= STO_MIPS16; | |
11227 | } | |
cbf8d970 MR |
11228 | else if (ELF_ST_IS_MICROMIPS (sym->st_other)) |
11229 | { | |
11230 | BFD_ASSERT (sym->st_value & 1); | |
11231 | sym->st_other -= STO_MICROMIPS; | |
11232 | } | |
b49e97c9 | 11233 | |
b34976b6 | 11234 | return TRUE; |
b49e97c9 TS |
11235 | } |
11236 | ||
0a44bf69 RS |
11237 | /* Likewise, for VxWorks. */ |
11238 | ||
11239 | bfd_boolean | |
11240 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
11241 | struct bfd_link_info *info, | |
11242 | struct elf_link_hash_entry *h, | |
11243 | Elf_Internal_Sym *sym) | |
11244 | { | |
11245 | bfd *dynobj; | |
11246 | asection *sgot; | |
11247 | struct mips_got_info *g; | |
11248 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 11249 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
11250 | |
11251 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11252 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 11253 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 11254 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 | 11255 | |
1bbce132 | 11256 | if (h->plt.plist != NULL && h->plt.plist->mips_offset != MINUS_ONE) |
0a44bf69 | 11257 | { |
6d79d2ed | 11258 | bfd_byte *loc; |
1bbce132 | 11259 | bfd_vma plt_address, got_address, got_offset, branch_offset; |
0a44bf69 RS |
11260 | Elf_Internal_Rela rel; |
11261 | static const bfd_vma *plt_entry; | |
1bbce132 MR |
11262 | bfd_vma gotplt_index; |
11263 | bfd_vma plt_offset; | |
11264 | ||
11265 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; | |
11266 | gotplt_index = h->plt.plist->gotplt_index; | |
0a44bf69 RS |
11267 | |
11268 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 11269 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 11270 | BFD_ASSERT (gotplt_index != MINUS_ONE); |
ce558b89 | 11271 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
0a44bf69 RS |
11272 | |
11273 | /* Calculate the address of the .plt entry. */ | |
ce558b89 AM |
11274 | plt_address = (htab->root.splt->output_section->vma |
11275 | + htab->root.splt->output_offset | |
1bbce132 | 11276 | + plt_offset); |
0a44bf69 RS |
11277 | |
11278 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
11279 | got_address = (htab->root.sgotplt->output_section->vma |
11280 | + htab->root.sgotplt->output_offset | |
1bbce132 | 11281 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd)); |
0a44bf69 RS |
11282 | |
11283 | /* Calculate the offset of the .got.plt entry from | |
11284 | _GLOBAL_OFFSET_TABLE_. */ | |
11285 | got_offset = mips_elf_gotplt_index (info, h); | |
11286 | ||
11287 | /* Calculate the offset for the branch at the start of the PLT | |
11288 | entry. The branch jumps to the beginning of .plt. */ | |
1bbce132 | 11289 | branch_offset = -(plt_offset / 4 + 1) & 0xffff; |
0a44bf69 RS |
11290 | |
11291 | /* Fill in the initial value of the .got.plt entry. */ | |
11292 | bfd_put_32 (output_bfd, plt_address, | |
ce558b89 | 11293 | (htab->root.sgotplt->contents |
1bbce132 | 11294 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd))); |
0a44bf69 RS |
11295 | |
11296 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 11297 | loc = htab->root.splt->contents + plt_offset; |
0a44bf69 | 11298 | |
0e1862bb | 11299 | if (bfd_link_pic (info)) |
0a44bf69 RS |
11300 | { |
11301 | plt_entry = mips_vxworks_shared_plt_entry; | |
11302 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11303 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11304 | } |
11305 | else | |
11306 | { | |
11307 | bfd_vma got_address_high, got_address_low; | |
11308 | ||
11309 | plt_entry = mips_vxworks_exec_plt_entry; | |
11310 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
11311 | got_address_low = got_address & 0xffff; | |
11312 | ||
11313 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11314 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11315 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); |
11316 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
11317 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11318 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11319 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11320 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11321 | ||
11322 | loc = (htab->srelplt2->contents | |
1bbce132 | 11323 | + (gotplt_index * 3 + 2) * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11324 | |
11325 | /* Emit a relocation for the .got.plt entry. */ | |
11326 | rel.r_offset = got_address; | |
11327 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
1bbce132 | 11328 | rel.r_addend = plt_offset; |
0a44bf69 RS |
11329 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
11330 | ||
11331 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
11332 | loc += sizeof (Elf32_External_Rela); | |
11333 | rel.r_offset = plt_address + 8; | |
11334 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11335 | rel.r_addend = got_offset; | |
11336 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11337 | ||
11338 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
11339 | loc += sizeof (Elf32_External_Rela); | |
11340 | rel.r_offset += 4; | |
11341 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11342 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11343 | } | |
11344 | ||
11345 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 11346 | loc = (htab->root.srelplt->contents |
1bbce132 | 11347 | + gotplt_index * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11348 | rel.r_offset = got_address; |
11349 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
11350 | rel.r_addend = 0; | |
11351 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11352 | ||
11353 | if (!h->def_regular) | |
11354 | sym->st_shndx = SHN_UNDEF; | |
11355 | } | |
11356 | ||
11357 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
11358 | ||
ce558b89 | 11359 | sgot = htab->root.sgot; |
a8028dd0 | 11360 | g = htab->got_info; |
0a44bf69 RS |
11361 | BFD_ASSERT (g != NULL); |
11362 | ||
11363 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 11364 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
11365 | { |
11366 | bfd_vma offset; | |
11367 | Elf_Internal_Rela outrel; | |
11368 | bfd_byte *loc; | |
11369 | asection *s; | |
11370 | ||
11371 | /* Install the symbol value in the GOT. */ | |
13fbec83 | 11372 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
0a44bf69 RS |
11373 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); |
11374 | ||
11375 | /* Add a dynamic relocation for it. */ | |
11376 | s = mips_elf_rel_dyn_section (info, FALSE); | |
11377 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
11378 | outrel.r_offset = (sgot->output_section->vma | |
11379 | + sgot->output_offset | |
11380 | + offset); | |
11381 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
11382 | outrel.r_addend = 0; | |
11383 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
11384 | } | |
11385 | ||
11386 | /* Emit a copy reloc, if needed. */ | |
11387 | if (h->needs_copy) | |
11388 | { | |
11389 | Elf_Internal_Rela rel; | |
5474d94f AM |
11390 | asection *srel; |
11391 | bfd_byte *loc; | |
0a44bf69 RS |
11392 | |
11393 | BFD_ASSERT (h->dynindx != -1); | |
11394 | ||
11395 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
11396 | + h->root.u.def.section->output_offset | |
11397 | + h->root.u.def.value); | |
11398 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
11399 | rel.r_addend = 0; | |
afbf7e8e | 11400 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
11401 | srel = htab->root.sreldynrelro; |
11402 | else | |
11403 | srel = htab->root.srelbss; | |
11404 | loc = srel->contents + srel->reloc_count * sizeof (Elf32_External_Rela); | |
11405 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11406 | ++srel->reloc_count; | |
0a44bf69 RS |
11407 | } |
11408 | ||
df58fc94 RS |
11409 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
11410 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
11411 | sym->st_value &= ~1; |
11412 | ||
11413 | return TRUE; | |
11414 | } | |
11415 | ||
861fb55a DJ |
11416 | /* Write out a plt0 entry to the beginning of .plt. */ |
11417 | ||
1bbce132 | 11418 | static bfd_boolean |
861fb55a DJ |
11419 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) |
11420 | { | |
11421 | bfd_byte *loc; | |
11422 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
11423 | static const bfd_vma *plt_entry; | |
11424 | struct mips_elf_link_hash_table *htab; | |
11425 | ||
11426 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11427 | BFD_ASSERT (htab != NULL); |
11428 | ||
861fb55a DJ |
11429 | if (ABI_64_P (output_bfd)) |
11430 | plt_entry = mips_n64_exec_plt0_entry; | |
11431 | else if (ABI_N32_P (output_bfd)) | |
11432 | plt_entry = mips_n32_exec_plt0_entry; | |
833794fc | 11433 | else if (!htab->plt_header_is_comp) |
861fb55a | 11434 | plt_entry = mips_o32_exec_plt0_entry; |
833794fc MR |
11435 | else if (htab->insn32) |
11436 | plt_entry = micromips_insn32_o32_exec_plt0_entry; | |
11437 | else | |
11438 | plt_entry = micromips_o32_exec_plt0_entry; | |
861fb55a DJ |
11439 | |
11440 | /* Calculate the value of .got.plt. */ | |
ce558b89 AM |
11441 | gotplt_value = (htab->root.sgotplt->output_section->vma |
11442 | + htab->root.sgotplt->output_offset); | |
861fb55a DJ |
11443 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; |
11444 | gotplt_value_low = gotplt_value & 0xffff; | |
11445 | ||
11446 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
11447 | not be loaded in two instructions. */ | |
789ff5b6 MR |
11448 | if (ABI_64_P (output_bfd) |
11449 | && ((gotplt_value + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
11450 | { | |
11451 | _bfd_error_handler | |
11452 | /* xgettext:c-format */ | |
11453 | (_("%pB: `%pA' start VMA of %#" PRIx64 " outside the 32-bit range " | |
11454 | "supported; consider using `-Ttext-segment=...'"), | |
11455 | output_bfd, | |
11456 | htab->root.sgotplt->output_section, | |
11457 | (int64_t) gotplt_value); | |
11458 | bfd_set_error (bfd_error_no_error); | |
11459 | return FALSE; | |
11460 | } | |
861fb55a DJ |
11461 | |
11462 | /* Install the PLT header. */ | |
ce558b89 | 11463 | loc = htab->root.splt->contents; |
1bbce132 MR |
11464 | if (plt_entry == micromips_o32_exec_plt0_entry) |
11465 | { | |
11466 | bfd_vma gotpc_offset; | |
11467 | bfd_vma loc_address; | |
11468 | size_t i; | |
11469 | ||
11470 | BFD_ASSERT (gotplt_value % 4 == 0); | |
11471 | ||
ce558b89 AM |
11472 | loc_address = (htab->root.splt->output_section->vma |
11473 | + htab->root.splt->output_offset); | |
1bbce132 MR |
11474 | gotpc_offset = gotplt_value - ((loc_address | 3) ^ 3); |
11475 | ||
11476 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
11477 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
11478 | { | |
4eca0228 | 11479 | _bfd_error_handler |
695344c0 | 11480 | /* xgettext:c-format */ |
2dcf00ce AM |
11481 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
11482 | "beyond the range of ADDIUPC"), | |
1bbce132 | 11483 | output_bfd, |
ce558b89 | 11484 | htab->root.sgotplt->output_section, |
2dcf00ce | 11485 | (int64_t) gotpc_offset, |
c08bb8dd | 11486 | htab->root.splt->output_section); |
1bbce132 MR |
11487 | bfd_set_error (bfd_error_no_error); |
11488 | return FALSE; | |
11489 | } | |
11490 | bfd_put_16 (output_bfd, | |
11491 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
11492 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
11493 | for (i = 2; i < ARRAY_SIZE (micromips_o32_exec_plt0_entry); i++) | |
11494 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11495 | } | |
833794fc MR |
11496 | else if (plt_entry == micromips_insn32_o32_exec_plt0_entry) |
11497 | { | |
11498 | size_t i; | |
11499 | ||
11500 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
11501 | bfd_put_16 (output_bfd, gotplt_value_high, loc + 2); | |
11502 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11503 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 6); | |
11504 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11505 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 10); | |
11506 | for (i = 6; i < ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); i++) | |
11507 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11508 | } | |
1bbce132 MR |
11509 | else |
11510 | { | |
11511 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
11512 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
11513 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
11514 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11515 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11516 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11517 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11518 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11519 | } | |
11520 | ||
11521 | return TRUE; | |
861fb55a DJ |
11522 | } |
11523 | ||
0a44bf69 RS |
11524 | /* Install the PLT header for a VxWorks executable and finalize the |
11525 | contents of .rela.plt.unloaded. */ | |
11526 | ||
11527 | static void | |
11528 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11529 | { | |
11530 | Elf_Internal_Rela rela; | |
11531 | bfd_byte *loc; | |
11532 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
11533 | static const bfd_vma *plt_entry; | |
11534 | struct mips_elf_link_hash_table *htab; | |
11535 | ||
11536 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11537 | BFD_ASSERT (htab != NULL); |
11538 | ||
0a44bf69 RS |
11539 | plt_entry = mips_vxworks_exec_plt0_entry; |
11540 | ||
11541 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
11542 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
11543 | + htab->root.hgot->root.u.def.section->output_offset | |
11544 | + htab->root.hgot->root.u.def.value); | |
11545 | ||
11546 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
11547 | got_value_low = got_value & 0xffff; | |
11548 | ||
11549 | /* Calculate the address of the PLT header. */ | |
ce558b89 AM |
11550 | plt_address = (htab->root.splt->output_section->vma |
11551 | + htab->root.splt->output_offset); | |
0a44bf69 RS |
11552 | |
11553 | /* Install the PLT header. */ | |
ce558b89 | 11554 | loc = htab->root.splt->contents; |
0a44bf69 RS |
11555 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); |
11556 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
11557 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
11558 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11559 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11560 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11561 | ||
11562 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
11563 | loc = htab->srelplt2->contents; | |
11564 | rela.r_offset = plt_address; | |
11565 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11566 | rela.r_addend = 0; | |
11567 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11568 | loc += sizeof (Elf32_External_Rela); | |
11569 | ||
11570 | /* Output the relocation for the following addiu of | |
11571 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
11572 | rela.r_offset += 4; | |
11573 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11574 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11575 | loc += sizeof (Elf32_External_Rela); | |
11576 | ||
11577 | /* Fix up the remaining relocations. They may have the wrong | |
11578 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
11579 | in which symbols were output. */ | |
11580 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
11581 | { | |
11582 | Elf_Internal_Rela rel; | |
11583 | ||
11584 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11585 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
11586 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11587 | loc += sizeof (Elf32_External_Rela); | |
11588 | ||
11589 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11590 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11591 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11592 | loc += sizeof (Elf32_External_Rela); | |
11593 | ||
11594 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11595 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11596 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11597 | loc += sizeof (Elf32_External_Rela); | |
11598 | } | |
11599 | } | |
11600 | ||
11601 | /* Install the PLT header for a VxWorks shared library. */ | |
11602 | ||
11603 | static void | |
11604 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11605 | { | |
11606 | unsigned int i; | |
11607 | struct mips_elf_link_hash_table *htab; | |
11608 | ||
11609 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11610 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
11611 | |
11612 | /* We just need to copy the entry byte-by-byte. */ | |
11613 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
11614 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
ce558b89 | 11615 | htab->root.splt->contents + i * 4); |
0a44bf69 RS |
11616 | } |
11617 | ||
b49e97c9 TS |
11618 | /* Finish up the dynamic sections. */ |
11619 | ||
b34976b6 | 11620 | bfd_boolean |
9719ad41 RS |
11621 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
11622 | struct bfd_link_info *info) | |
b49e97c9 TS |
11623 | { |
11624 | bfd *dynobj; | |
11625 | asection *sdyn; | |
11626 | asection *sgot; | |
f4416af6 | 11627 | struct mips_got_info *gg, *g; |
0a44bf69 | 11628 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 11629 | |
0a44bf69 | 11630 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
11631 | BFD_ASSERT (htab != NULL); |
11632 | ||
b49e97c9 TS |
11633 | dynobj = elf_hash_table (info)->dynobj; |
11634 | ||
3d4d4302 | 11635 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 11636 | |
ce558b89 | 11637 | sgot = htab->root.sgot; |
23cc69b6 | 11638 | gg = htab->got_info; |
b49e97c9 TS |
11639 | |
11640 | if (elf_hash_table (info)->dynamic_sections_created) | |
11641 | { | |
11642 | bfd_byte *b; | |
943284cc | 11643 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
11644 | |
11645 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
11646 | BFD_ASSERT (gg != NULL); |
11647 | ||
d7206569 | 11648 | g = mips_elf_bfd_got (output_bfd, FALSE); |
b49e97c9 TS |
11649 | BFD_ASSERT (g != NULL); |
11650 | ||
11651 | for (b = sdyn->contents; | |
eea6121a | 11652 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
11653 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
11654 | { | |
11655 | Elf_Internal_Dyn dyn; | |
11656 | const char *name; | |
11657 | size_t elemsize; | |
11658 | asection *s; | |
b34976b6 | 11659 | bfd_boolean swap_out_p; |
b49e97c9 TS |
11660 | |
11661 | /* Read in the current dynamic entry. */ | |
11662 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
11663 | ||
11664 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 11665 | swap_out_p = TRUE; |
b49e97c9 TS |
11666 | |
11667 | switch (dyn.d_tag) | |
11668 | { | |
11669 | case DT_RELENT: | |
b49e97c9 TS |
11670 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
11671 | break; | |
11672 | ||
0a44bf69 RS |
11673 | case DT_RELAENT: |
11674 | BFD_ASSERT (htab->is_vxworks); | |
11675 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
11676 | break; | |
11677 | ||
b49e97c9 TS |
11678 | case DT_STRSZ: |
11679 | /* Rewrite DT_STRSZ. */ | |
11680 | dyn.d_un.d_val = | |
11681 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
11682 | break; | |
11683 | ||
11684 | case DT_PLTGOT: | |
ce558b89 | 11685 | s = htab->root.sgot; |
861fb55a DJ |
11686 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
11687 | break; | |
11688 | ||
11689 | case DT_MIPS_PLTGOT: | |
ce558b89 | 11690 | s = htab->root.sgotplt; |
861fb55a | 11691 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
b49e97c9 TS |
11692 | break; |
11693 | ||
11694 | case DT_MIPS_RLD_VERSION: | |
11695 | dyn.d_un.d_val = 1; /* XXX */ | |
11696 | break; | |
11697 | ||
11698 | case DT_MIPS_FLAGS: | |
11699 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
11700 | break; | |
11701 | ||
b49e97c9 | 11702 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
11703 | { |
11704 | time_t t; | |
11705 | time (&t); | |
11706 | dyn.d_un.d_val = t; | |
11707 | } | |
b49e97c9 TS |
11708 | break; |
11709 | ||
11710 | case DT_MIPS_ICHECKSUM: | |
11711 | /* XXX FIXME: */ | |
b34976b6 | 11712 | swap_out_p = FALSE; |
b49e97c9 TS |
11713 | break; |
11714 | ||
11715 | case DT_MIPS_IVERSION: | |
11716 | /* XXX FIXME: */ | |
b34976b6 | 11717 | swap_out_p = FALSE; |
b49e97c9 TS |
11718 | break; |
11719 | ||
11720 | case DT_MIPS_BASE_ADDRESS: | |
11721 | s = output_bfd->sections; | |
11722 | BFD_ASSERT (s != NULL); | |
11723 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
11724 | break; | |
11725 | ||
11726 | case DT_MIPS_LOCAL_GOTNO: | |
11727 | dyn.d_un.d_val = g->local_gotno; | |
11728 | break; | |
11729 | ||
11730 | case DT_MIPS_UNREFEXTNO: | |
11731 | /* The index into the dynamic symbol table which is the | |
11732 | entry of the first external symbol that is not | |
11733 | referenced within the same object. */ | |
11734 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
11735 | break; | |
11736 | ||
11737 | case DT_MIPS_GOTSYM: | |
d222d210 | 11738 | if (htab->global_gotsym) |
b49e97c9 | 11739 | { |
d222d210 | 11740 | dyn.d_un.d_val = htab->global_gotsym->dynindx; |
b49e97c9 TS |
11741 | break; |
11742 | } | |
11743 | /* In case if we don't have global got symbols we default | |
11744 | to setting DT_MIPS_GOTSYM to the same value as | |
1a0670f3 AM |
11745 | DT_MIPS_SYMTABNO. */ |
11746 | /* Fall through. */ | |
b49e97c9 TS |
11747 | |
11748 | case DT_MIPS_SYMTABNO: | |
11749 | name = ".dynsym"; | |
11750 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
4ade44b7 | 11751 | s = bfd_get_linker_section (dynobj, name); |
b49e97c9 | 11752 | |
131e2f8e MF |
11753 | if (s != NULL) |
11754 | dyn.d_un.d_val = s->size / elemsize; | |
11755 | else | |
11756 | dyn.d_un.d_val = 0; | |
b49e97c9 TS |
11757 | break; |
11758 | ||
11759 | case DT_MIPS_HIPAGENO: | |
861fb55a | 11760 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
11761 | break; |
11762 | ||
11763 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
11764 | { |
11765 | struct elf_link_hash_entry *h; | |
11766 | h = mips_elf_hash_table (info)->rld_symbol; | |
11767 | if (!h) | |
11768 | { | |
11769 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11770 | swap_out_p = FALSE; | |
11771 | break; | |
11772 | } | |
11773 | s = h->root.u.def.section; | |
a5499fa4 MF |
11774 | |
11775 | /* The MIPS_RLD_MAP tag stores the absolute address of the | |
11776 | debug pointer. */ | |
b4082c70 DD |
11777 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
11778 | + h->root.u.def.value); | |
11779 | } | |
b49e97c9 TS |
11780 | break; |
11781 | ||
a5499fa4 MF |
11782 | case DT_MIPS_RLD_MAP_REL: |
11783 | { | |
11784 | struct elf_link_hash_entry *h; | |
11785 | bfd_vma dt_addr, rld_addr; | |
11786 | h = mips_elf_hash_table (info)->rld_symbol; | |
11787 | if (!h) | |
11788 | { | |
11789 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11790 | swap_out_p = FALSE; | |
11791 | break; | |
11792 | } | |
11793 | s = h->root.u.def.section; | |
11794 | ||
11795 | /* The MIPS_RLD_MAP_REL tag stores the offset to the debug | |
11796 | pointer, relative to the address of the tag. */ | |
11797 | dt_addr = (sdyn->output_section->vma + sdyn->output_offset | |
d5cff5df | 11798 | + (b - sdyn->contents)); |
a5499fa4 MF |
11799 | rld_addr = (s->output_section->vma + s->output_offset |
11800 | + h->root.u.def.value); | |
11801 | dyn.d_un.d_ptr = rld_addr - dt_addr; | |
11802 | } | |
11803 | break; | |
11804 | ||
b49e97c9 TS |
11805 | case DT_MIPS_OPTIONS: |
11806 | s = (bfd_get_section_by_name | |
11807 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
11808 | dyn.d_un.d_ptr = s->vma; | |
11809 | break; | |
11810 | ||
0a44bf69 | 11811 | case DT_PLTREL: |
861fb55a DJ |
11812 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
11813 | if (htab->is_vxworks) | |
11814 | dyn.d_un.d_val = DT_RELA; | |
11815 | else | |
11816 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
11817 | break; |
11818 | ||
11819 | case DT_PLTRELSZ: | |
861fb55a | 11820 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 | 11821 | dyn.d_un.d_val = htab->root.srelplt->size; |
0a44bf69 RS |
11822 | break; |
11823 | ||
11824 | case DT_JMPREL: | |
861fb55a | 11825 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 AM |
11826 | dyn.d_un.d_ptr = (htab->root.srelplt->output_section->vma |
11827 | + htab->root.srelplt->output_offset); | |
0a44bf69 RS |
11828 | break; |
11829 | ||
943284cc DJ |
11830 | case DT_TEXTREL: |
11831 | /* If we didn't need any text relocations after all, delete | |
11832 | the dynamic tag. */ | |
11833 | if (!(info->flags & DF_TEXTREL)) | |
11834 | { | |
11835 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11836 | swap_out_p = FALSE; | |
11837 | } | |
11838 | break; | |
11839 | ||
11840 | case DT_FLAGS: | |
11841 | /* If we didn't need any text relocations after all, clear | |
11842 | DF_TEXTREL from DT_FLAGS. */ | |
11843 | if (!(info->flags & DF_TEXTREL)) | |
11844 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
11845 | else | |
11846 | swap_out_p = FALSE; | |
11847 | break; | |
11848 | ||
b49e97c9 | 11849 | default: |
b34976b6 | 11850 | swap_out_p = FALSE; |
7a2b07ff NS |
11851 | if (htab->is_vxworks |
11852 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11853 | swap_out_p = TRUE; | |
b49e97c9 TS |
11854 | break; |
11855 | } | |
11856 | ||
943284cc | 11857 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 11858 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
11859 | (dynobj, &dyn, b - dyn_skipped); |
11860 | ||
11861 | if (dyn_to_skip) | |
11862 | { | |
11863 | dyn_skipped += dyn_to_skip; | |
11864 | dyn_to_skip = 0; | |
11865 | } | |
b49e97c9 | 11866 | } |
943284cc DJ |
11867 | |
11868 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
11869 | if (dyn_skipped > 0) | |
11870 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
11871 | } |
11872 | ||
b55fd4d4 DJ |
11873 | if (sgot != NULL && sgot->size > 0 |
11874 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 11875 | { |
0a44bf69 RS |
11876 | if (htab->is_vxworks) |
11877 | { | |
11878 | /* The first entry of the global offset table points to the | |
11879 | ".dynamic" section. The second is initialized by the | |
11880 | loader and contains the shared library identifier. | |
11881 | The third is also initialized by the loader and points | |
11882 | to the lazy resolution stub. */ | |
11883 | MIPS_ELF_PUT_WORD (output_bfd, | |
11884 | sdyn->output_offset + sdyn->output_section->vma, | |
11885 | sgot->contents); | |
11886 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
11887 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
11888 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
11889 | sgot->contents | |
11890 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
11891 | } | |
11892 | else | |
11893 | { | |
11894 | /* The first entry of the global offset table will be filled at | |
11895 | runtime. The second entry will be used by some runtime loaders. | |
11896 | This isn't the case of IRIX rld. */ | |
11897 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 11898 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
11899 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
11900 | } | |
b49e97c9 | 11901 | |
54938e2a TS |
11902 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
11903 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
11904 | } | |
b49e97c9 | 11905 | |
f4416af6 AO |
11906 | /* Generate dynamic relocations for the non-primary gots. */ |
11907 | if (gg != NULL && gg->next) | |
11908 | { | |
11909 | Elf_Internal_Rela rel[3]; | |
11910 | bfd_vma addend = 0; | |
11911 | ||
11912 | memset (rel, 0, sizeof (rel)); | |
11913 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
11914 | ||
11915 | for (g = gg->next; g->next != gg; g = g->next) | |
11916 | { | |
91d6fa6a | 11917 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 11918 | + g->next->tls_gotno; |
f4416af6 | 11919 | |
9719ad41 | 11920 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 11921 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
11922 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
11923 | sgot->contents | |
91d6fa6a | 11924 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 | 11925 | |
0e1862bb | 11926 | if (! bfd_link_pic (info)) |
f4416af6 AO |
11927 | continue; |
11928 | ||
cb22ccf4 | 11929 | for (; got_index < g->local_gotno; got_index++) |
f4416af6 | 11930 | { |
cb22ccf4 KCY |
11931 | if (got_index >= g->assigned_low_gotno |
11932 | && got_index <= g->assigned_high_gotno) | |
11933 | continue; | |
11934 | ||
f4416af6 | 11935 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset |
cb22ccf4 | 11936 | = got_index * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
11937 | if (!(mips_elf_create_dynamic_relocation |
11938 | (output_bfd, info, rel, NULL, | |
11939 | bfd_abs_section_ptr, | |
11940 | 0, &addend, sgot))) | |
11941 | return FALSE; | |
11942 | BFD_ASSERT (addend == 0); | |
11943 | } | |
11944 | } | |
11945 | } | |
11946 | ||
3133ddbf DJ |
11947 | /* The generation of dynamic relocations for the non-primary gots |
11948 | adds more dynamic relocations. We cannot count them until | |
11949 | here. */ | |
11950 | ||
11951 | if (elf_hash_table (info)->dynamic_sections_created) | |
11952 | { | |
11953 | bfd_byte *b; | |
11954 | bfd_boolean swap_out_p; | |
11955 | ||
11956 | BFD_ASSERT (sdyn != NULL); | |
11957 | ||
11958 | for (b = sdyn->contents; | |
11959 | b < sdyn->contents + sdyn->size; | |
11960 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
11961 | { | |
11962 | Elf_Internal_Dyn dyn; | |
11963 | asection *s; | |
11964 | ||
11965 | /* Read in the current dynamic entry. */ | |
11966 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
11967 | ||
11968 | /* Assume that we're going to modify it and write it out. */ | |
11969 | swap_out_p = TRUE; | |
11970 | ||
11971 | switch (dyn.d_tag) | |
11972 | { | |
11973 | case DT_RELSZ: | |
11974 | /* Reduce DT_RELSZ to account for any relocations we | |
11975 | decided not to make. This is for the n64 irix rld, | |
11976 | which doesn't seem to apply any relocations if there | |
11977 | are trailing null entries. */ | |
0a44bf69 | 11978 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
11979 | dyn.d_un.d_val = (s->reloc_count |
11980 | * (ABI_64_P (output_bfd) | |
11981 | ? sizeof (Elf64_Mips_External_Rel) | |
11982 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
11983 | /* Adjust the section size too. Tools like the prelinker |
11984 | can reasonably expect the values to the same. */ | |
db841b6f | 11985 | BFD_ASSERT (!bfd_is_abs_section (s->output_section)); |
bcfdf036 RS |
11986 | elf_section_data (s->output_section)->this_hdr.sh_size |
11987 | = dyn.d_un.d_val; | |
3133ddbf DJ |
11988 | break; |
11989 | ||
11990 | default: | |
11991 | swap_out_p = FALSE; | |
11992 | break; | |
11993 | } | |
11994 | ||
11995 | if (swap_out_p) | |
11996 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
11997 | (dynobj, &dyn, b); | |
11998 | } | |
11999 | } | |
12000 | ||
b49e97c9 | 12001 | { |
b49e97c9 TS |
12002 | asection *s; |
12003 | Elf32_compact_rel cpt; | |
12004 | ||
b49e97c9 TS |
12005 | if (SGI_COMPAT (output_bfd)) |
12006 | { | |
12007 | /* Write .compact_rel section out. */ | |
3d4d4302 | 12008 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
12009 | if (s != NULL) |
12010 | { | |
12011 | cpt.id1 = 1; | |
12012 | cpt.num = s->reloc_count; | |
12013 | cpt.id2 = 2; | |
12014 | cpt.offset = (s->output_section->filepos | |
12015 | + sizeof (Elf32_External_compact_rel)); | |
12016 | cpt.reserved0 = 0; | |
12017 | cpt.reserved1 = 0; | |
12018 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
12019 | ((Elf32_External_compact_rel *) | |
12020 | s->contents)); | |
12021 | ||
12022 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 12023 | if (htab->sstubs != NULL) |
b49e97c9 TS |
12024 | { |
12025 | file_ptr dummy_offset; | |
12026 | ||
4e41d0d7 RS |
12027 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
12028 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
12029 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 12030 | htab->function_stub_size); |
b49e97c9 TS |
12031 | } |
12032 | } | |
12033 | } | |
12034 | ||
0a44bf69 RS |
12035 | /* The psABI says that the dynamic relocations must be sorted in |
12036 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
12037 | this, and because the code below handles REL rather than RELA | |
12038 | relocations, using it for VxWorks would be outright harmful. */ | |
12039 | if (!htab->is_vxworks) | |
b49e97c9 | 12040 | { |
0a44bf69 RS |
12041 | s = mips_elf_rel_dyn_section (info, FALSE); |
12042 | if (s != NULL | |
12043 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
12044 | { | |
12045 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 12046 | |
0a44bf69 RS |
12047 | if (ABI_64_P (output_bfd)) |
12048 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
12049 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
12050 | sort_dynamic_relocs_64); | |
12051 | else | |
12052 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
12053 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
12054 | sort_dynamic_relocs); | |
12055 | } | |
b49e97c9 | 12056 | } |
b49e97c9 TS |
12057 | } |
12058 | ||
ce558b89 | 12059 | if (htab->root.splt && htab->root.splt->size > 0) |
0a44bf69 | 12060 | { |
861fb55a DJ |
12061 | if (htab->is_vxworks) |
12062 | { | |
0e1862bb | 12063 | if (bfd_link_pic (info)) |
861fb55a DJ |
12064 | mips_vxworks_finish_shared_plt (output_bfd, info); |
12065 | else | |
12066 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
12067 | } | |
0a44bf69 | 12068 | else |
861fb55a | 12069 | { |
0e1862bb | 12070 | BFD_ASSERT (!bfd_link_pic (info)); |
1bbce132 MR |
12071 | if (!mips_finish_exec_plt (output_bfd, info)) |
12072 | return FALSE; | |
861fb55a | 12073 | } |
0a44bf69 | 12074 | } |
b34976b6 | 12075 | return TRUE; |
b49e97c9 TS |
12076 | } |
12077 | ||
b49e97c9 | 12078 | |
64543e1a RS |
12079 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
12080 | ||
12081 | static void | |
9719ad41 | 12082 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 12083 | { |
64543e1a | 12084 | flagword val; |
b49e97c9 TS |
12085 | |
12086 | switch (bfd_get_mach (abfd)) | |
12087 | { | |
12088 | default: | |
12089 | case bfd_mach_mips3000: | |
12090 | val = E_MIPS_ARCH_1; | |
12091 | break; | |
12092 | ||
12093 | case bfd_mach_mips3900: | |
12094 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
12095 | break; | |
12096 | ||
12097 | case bfd_mach_mips6000: | |
12098 | val = E_MIPS_ARCH_2; | |
12099 | break; | |
12100 | ||
b417536f MR |
12101 | case bfd_mach_mips4010: |
12102 | val = E_MIPS_ARCH_2 | E_MIPS_MACH_4010; | |
12103 | break; | |
12104 | ||
b49e97c9 TS |
12105 | case bfd_mach_mips4000: |
12106 | case bfd_mach_mips4300: | |
12107 | case bfd_mach_mips4400: | |
12108 | case bfd_mach_mips4600: | |
12109 | val = E_MIPS_ARCH_3; | |
12110 | break; | |
12111 | ||
b49e97c9 TS |
12112 | case bfd_mach_mips4100: |
12113 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
12114 | break; | |
12115 | ||
12116 | case bfd_mach_mips4111: | |
12117 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
12118 | break; | |
12119 | ||
00707a0e RS |
12120 | case bfd_mach_mips4120: |
12121 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
12122 | break; | |
12123 | ||
b49e97c9 TS |
12124 | case bfd_mach_mips4650: |
12125 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
12126 | break; | |
12127 | ||
00707a0e RS |
12128 | case bfd_mach_mips5400: |
12129 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
12130 | break; | |
12131 | ||
12132 | case bfd_mach_mips5500: | |
12133 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
12134 | break; | |
12135 | ||
e407c74b NC |
12136 | case bfd_mach_mips5900: |
12137 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
12138 | break; | |
12139 | ||
0d2e43ed ILT |
12140 | case bfd_mach_mips9000: |
12141 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
12142 | break; | |
12143 | ||
b49e97c9 | 12144 | case bfd_mach_mips5000: |
5a7ea749 | 12145 | case bfd_mach_mips7000: |
b49e97c9 TS |
12146 | case bfd_mach_mips8000: |
12147 | case bfd_mach_mips10000: | |
12148 | case bfd_mach_mips12000: | |
3aa3176b TS |
12149 | case bfd_mach_mips14000: |
12150 | case bfd_mach_mips16000: | |
b49e97c9 TS |
12151 | val = E_MIPS_ARCH_4; |
12152 | break; | |
12153 | ||
12154 | case bfd_mach_mips5: | |
12155 | val = E_MIPS_ARCH_5; | |
12156 | break; | |
12157 | ||
350cc38d MS |
12158 | case bfd_mach_mips_loongson_2e: |
12159 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
12160 | break; | |
12161 | ||
12162 | case bfd_mach_mips_loongson_2f: | |
12163 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
12164 | break; | |
12165 | ||
b49e97c9 TS |
12166 | case bfd_mach_mips_sb1: |
12167 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
12168 | break; | |
12169 | ||
ac8cb70f CX |
12170 | case bfd_mach_mips_gs464: |
12171 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS464; | |
d051516a NC |
12172 | break; |
12173 | ||
bd782c07 CX |
12174 | case bfd_mach_mips_gs464e: |
12175 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS464E; | |
12176 | break; | |
12177 | ||
9108bc33 CX |
12178 | case bfd_mach_mips_gs264e: |
12179 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS264E; | |
12180 | break; | |
12181 | ||
6f179bd0 | 12182 | case bfd_mach_mips_octeon: |
dd6a37e7 | 12183 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
12184 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
12185 | break; | |
12186 | ||
2c629856 N |
12187 | case bfd_mach_mips_octeon3: |
12188 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON3; | |
12189 | break; | |
12190 | ||
52b6b6b9 JM |
12191 | case bfd_mach_mips_xlr: |
12192 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
12193 | break; | |
12194 | ||
432233b3 AP |
12195 | case bfd_mach_mips_octeon2: |
12196 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
12197 | break; | |
12198 | ||
b49e97c9 TS |
12199 | case bfd_mach_mipsisa32: |
12200 | val = E_MIPS_ARCH_32; | |
12201 | break; | |
12202 | ||
12203 | case bfd_mach_mipsisa64: | |
12204 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
12205 | break; |
12206 | ||
12207 | case bfd_mach_mipsisa32r2: | |
ae52f483 AB |
12208 | case bfd_mach_mipsisa32r3: |
12209 | case bfd_mach_mipsisa32r5: | |
af7ee8bf CD |
12210 | val = E_MIPS_ARCH_32R2; |
12211 | break; | |
5f74bc13 | 12212 | |
38bf472a MR |
12213 | case bfd_mach_mips_interaptiv_mr2: |
12214 | val = E_MIPS_ARCH_32R2 | E_MIPS_MACH_IAMR2; | |
12215 | break; | |
12216 | ||
5f74bc13 | 12217 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
12218 | case bfd_mach_mipsisa64r3: |
12219 | case bfd_mach_mipsisa64r5: | |
5f74bc13 CD |
12220 | val = E_MIPS_ARCH_64R2; |
12221 | break; | |
7361da2c AB |
12222 | |
12223 | case bfd_mach_mipsisa32r6: | |
12224 | val = E_MIPS_ARCH_32R6; | |
12225 | break; | |
12226 | ||
12227 | case bfd_mach_mipsisa64r6: | |
12228 | val = E_MIPS_ARCH_64R6; | |
12229 | break; | |
b49e97c9 | 12230 | } |
b49e97c9 TS |
12231 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
12232 | elf_elfheader (abfd)->e_flags |= val; | |
12233 | ||
64543e1a RS |
12234 | } |
12235 | ||
12236 | ||
28dbcedc AM |
12237 | /* Whether to sort relocs output by ld -r or ld --emit-relocs, by r_offset. |
12238 | Don't do so for code sections. We want to keep ordering of HI16/LO16 | |
12239 | as is. On the other hand, elf-eh-frame.c processing requires .eh_frame | |
12240 | relocs to be sorted. */ | |
12241 | ||
12242 | bfd_boolean | |
12243 | _bfd_mips_elf_sort_relocs_p (asection *sec) | |
12244 | { | |
12245 | return (sec->flags & SEC_CODE) == 0; | |
12246 | } | |
12247 | ||
12248 | ||
64543e1a RS |
12249 | /* The final processing done just before writing out a MIPS ELF object |
12250 | file. This gets the MIPS architecture right based on the machine | |
12251 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
12252 | ||
12253 | void | |
9719ad41 RS |
12254 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
12255 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
12256 | { |
12257 | unsigned int i; | |
12258 | Elf_Internal_Shdr **hdrpp; | |
12259 | const char *name; | |
12260 | asection *sec; | |
12261 | ||
12262 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
12263 | is nonzero. This is for compatibility with old objects, which used | |
12264 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
12265 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
12266 | mips_set_isa_flags (abfd); | |
12267 | ||
b49e97c9 TS |
12268 | /* Set the sh_info field for .gptab sections and other appropriate |
12269 | info for each special section. */ | |
12270 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
12271 | i < elf_numsections (abfd); | |
12272 | i++, hdrpp++) | |
12273 | { | |
12274 | switch ((*hdrpp)->sh_type) | |
12275 | { | |
12276 | case SHT_MIPS_MSYM: | |
12277 | case SHT_MIPS_LIBLIST: | |
12278 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
12279 | if (sec != NULL) | |
12280 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12281 | break; | |
12282 | ||
12283 | case SHT_MIPS_GPTAB: | |
12284 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12285 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12286 | BFD_ASSERT (name != NULL | |
0112cd26 | 12287 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
12288 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
12289 | BFD_ASSERT (sec != NULL); | |
12290 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12291 | break; | |
12292 | ||
12293 | case SHT_MIPS_CONTENT: | |
12294 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12295 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12296 | BFD_ASSERT (name != NULL | |
0112cd26 | 12297 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
12298 | sec = bfd_get_section_by_name (abfd, |
12299 | name + sizeof ".MIPS.content" - 1); | |
12300 | BFD_ASSERT (sec != NULL); | |
12301 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12302 | break; | |
12303 | ||
12304 | case SHT_MIPS_SYMBOL_LIB: | |
12305 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
12306 | if (sec != NULL) | |
12307 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12308 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
12309 | if (sec != NULL) | |
12310 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12311 | break; | |
12312 | ||
12313 | case SHT_MIPS_EVENTS: | |
12314 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12315 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12316 | BFD_ASSERT (name != NULL); | |
0112cd26 | 12317 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
12318 | sec = bfd_get_section_by_name (abfd, |
12319 | name + sizeof ".MIPS.events" - 1); | |
12320 | else | |
12321 | { | |
0112cd26 | 12322 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
12323 | sec = bfd_get_section_by_name (abfd, |
12324 | (name | |
12325 | + sizeof ".MIPS.post_rel" - 1)); | |
12326 | } | |
12327 | BFD_ASSERT (sec != NULL); | |
12328 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12329 | break; | |
12330 | ||
12331 | } | |
12332 | } | |
12333 | } | |
12334 | \f | |
8dc1a139 | 12335 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
12336 | segments. */ |
12337 | ||
12338 | int | |
a6b96beb AM |
12339 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
12340 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
12341 | { |
12342 | asection *s; | |
12343 | int ret = 0; | |
12344 | ||
12345 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
12346 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12347 | if (s && (s->flags & SEC_LOAD)) | |
12348 | ++ret; | |
12349 | ||
351cdf24 MF |
12350 | /* See if we need a PT_MIPS_ABIFLAGS segment. */ |
12351 | if (bfd_get_section_by_name (abfd, ".MIPS.abiflags")) | |
12352 | ++ret; | |
12353 | ||
b49e97c9 TS |
12354 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
12355 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
12356 | && bfd_get_section_by_name (abfd, | |
12357 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
12358 | ++ret; | |
12359 | ||
12360 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
12361 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
12362 | && bfd_get_section_by_name (abfd, ".dynamic") | |
12363 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
12364 | ++ret; | |
12365 | ||
98c904a8 RS |
12366 | /* Allocate a PT_NULL header in dynamic objects. See |
12367 | _bfd_mips_elf_modify_segment_map for details. */ | |
12368 | if (!SGI_COMPAT (abfd) | |
12369 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
12370 | ++ret; | |
12371 | ||
b49e97c9 TS |
12372 | return ret; |
12373 | } | |
12374 | ||
8dc1a139 | 12375 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 12376 | |
b34976b6 | 12377 | bfd_boolean |
9719ad41 | 12378 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 12379 | struct bfd_link_info *info) |
b49e97c9 TS |
12380 | { |
12381 | asection *s; | |
12382 | struct elf_segment_map *m, **pm; | |
12383 | bfd_size_type amt; | |
12384 | ||
12385 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
12386 | segment. */ | |
12387 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12388 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12389 | { | |
12bd6957 | 12390 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12391 | if (m->p_type == PT_MIPS_REGINFO) |
12392 | break; | |
12393 | if (m == NULL) | |
12394 | { | |
12395 | amt = sizeof *m; | |
9719ad41 | 12396 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12397 | if (m == NULL) |
b34976b6 | 12398 | return FALSE; |
b49e97c9 TS |
12399 | |
12400 | m->p_type = PT_MIPS_REGINFO; | |
12401 | m->count = 1; | |
12402 | m->sections[0] = s; | |
12403 | ||
12404 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 12405 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12406 | while (*pm != NULL |
12407 | && ((*pm)->p_type == PT_PHDR | |
12408 | || (*pm)->p_type == PT_INTERP)) | |
12409 | pm = &(*pm)->next; | |
12410 | ||
12411 | m->next = *pm; | |
12412 | *pm = m; | |
12413 | } | |
12414 | } | |
12415 | ||
351cdf24 MF |
12416 | /* If there is a .MIPS.abiflags section, we need a PT_MIPS_ABIFLAGS |
12417 | segment. */ | |
12418 | s = bfd_get_section_by_name (abfd, ".MIPS.abiflags"); | |
12419 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12420 | { | |
12421 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) | |
12422 | if (m->p_type == PT_MIPS_ABIFLAGS) | |
12423 | break; | |
12424 | if (m == NULL) | |
12425 | { | |
12426 | amt = sizeof *m; | |
12427 | m = bfd_zalloc (abfd, amt); | |
12428 | if (m == NULL) | |
12429 | return FALSE; | |
12430 | ||
12431 | m->p_type = PT_MIPS_ABIFLAGS; | |
12432 | m->count = 1; | |
12433 | m->sections[0] = s; | |
12434 | ||
12435 | /* We want to put it after the PHDR and INTERP segments. */ | |
12436 | pm = &elf_seg_map (abfd); | |
12437 | while (*pm != NULL | |
12438 | && ((*pm)->p_type == PT_PHDR | |
12439 | || (*pm)->p_type == PT_INTERP)) | |
12440 | pm = &(*pm)->next; | |
12441 | ||
12442 | m->next = *pm; | |
12443 | *pm = m; | |
12444 | } | |
12445 | } | |
12446 | ||
b49e97c9 TS |
12447 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but |
12448 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 12449 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 12450 | table. */ |
c1fd6598 AO |
12451 | if (NEWABI_P (abfd) |
12452 | /* On non-IRIX6 new abi, we'll have already created a segment | |
12453 | for this section, so don't create another. I'm not sure this | |
12454 | is not also the case for IRIX 6, but I can't test it right | |
12455 | now. */ | |
12456 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
12457 | { |
12458 | for (s = abfd->sections; s; s = s->next) | |
12459 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
12460 | break; | |
12461 | ||
12462 | if (s) | |
12463 | { | |
12464 | struct elf_segment_map *options_segment; | |
12465 | ||
12bd6957 | 12466 | pm = &elf_seg_map (abfd); |
98a8deaf RS |
12467 | while (*pm != NULL |
12468 | && ((*pm)->p_type == PT_PHDR | |
12469 | || (*pm)->p_type == PT_INTERP)) | |
12470 | pm = &(*pm)->next; | |
b49e97c9 | 12471 | |
8ded5a0f AM |
12472 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
12473 | { | |
12474 | amt = sizeof (struct elf_segment_map); | |
12475 | options_segment = bfd_zalloc (abfd, amt); | |
12476 | options_segment->next = *pm; | |
12477 | options_segment->p_type = PT_MIPS_OPTIONS; | |
12478 | options_segment->p_flags = PF_R; | |
12479 | options_segment->p_flags_valid = TRUE; | |
12480 | options_segment->count = 1; | |
12481 | options_segment->sections[0] = s; | |
12482 | *pm = options_segment; | |
12483 | } | |
b49e97c9 TS |
12484 | } |
12485 | } | |
12486 | else | |
12487 | { | |
12488 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
12489 | { | |
12490 | /* If there are .dynamic and .mdebug sections, we make a room | |
12491 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
12492 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
12493 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
12494 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
12495 | { | |
12bd6957 | 12496 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12497 | if (m->p_type == PT_MIPS_RTPROC) |
12498 | break; | |
12499 | if (m == NULL) | |
12500 | { | |
12501 | amt = sizeof *m; | |
9719ad41 | 12502 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12503 | if (m == NULL) |
b34976b6 | 12504 | return FALSE; |
b49e97c9 TS |
12505 | |
12506 | m->p_type = PT_MIPS_RTPROC; | |
12507 | ||
12508 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
12509 | if (s == NULL) | |
12510 | { | |
12511 | m->count = 0; | |
12512 | m->p_flags = 0; | |
12513 | m->p_flags_valid = 1; | |
12514 | } | |
12515 | else | |
12516 | { | |
12517 | m->count = 1; | |
12518 | m->sections[0] = s; | |
12519 | } | |
12520 | ||
12521 | /* We want to put it after the DYNAMIC segment. */ | |
12bd6957 | 12522 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12523 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) |
12524 | pm = &(*pm)->next; | |
12525 | if (*pm != NULL) | |
12526 | pm = &(*pm)->next; | |
12527 | ||
12528 | m->next = *pm; | |
12529 | *pm = m; | |
12530 | } | |
12531 | } | |
12532 | } | |
8dc1a139 | 12533 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
12534 | .dynstr, .dynsym, and .hash sections, and everything in |
12535 | between. */ | |
12bd6957 | 12536 | for (pm = &elf_seg_map (abfd); *pm != NULL; |
b49e97c9 TS |
12537 | pm = &(*pm)->next) |
12538 | if ((*pm)->p_type == PT_DYNAMIC) | |
12539 | break; | |
12540 | m = *pm; | |
f6f62d6f RS |
12541 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
12542 | glibc's dynamic linker has traditionally derived the number of | |
12543 | tags from the p_filesz field, and sometimes allocates stack | |
12544 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
12545 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
12546 | other sections can also make life hard for the prelinker, | |
12547 | which might move one of the other sections to a different | |
12548 | PT_LOAD segment. */ | |
12549 | if (SGI_COMPAT (abfd) | |
12550 | && m != NULL | |
12551 | && m->count == 1 | |
12552 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
12553 | { |
12554 | static const char *sec_names[] = | |
12555 | { | |
12556 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
12557 | }; | |
12558 | bfd_vma low, high; | |
12559 | unsigned int i, c; | |
12560 | struct elf_segment_map *n; | |
12561 | ||
792b4a53 | 12562 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
12563 | high = 0; |
12564 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
12565 | { | |
12566 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
12567 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12568 | { | |
12569 | bfd_size_type sz; | |
12570 | ||
12571 | if (low > s->vma) | |
12572 | low = s->vma; | |
eea6121a | 12573 | sz = s->size; |
b49e97c9 TS |
12574 | if (high < s->vma + sz) |
12575 | high = s->vma + sz; | |
12576 | } | |
12577 | } | |
12578 | ||
12579 | c = 0; | |
12580 | for (s = abfd->sections; s != NULL; s = s->next) | |
12581 | if ((s->flags & SEC_LOAD) != 0 | |
12582 | && s->vma >= low | |
eea6121a | 12583 | && s->vma + s->size <= high) |
b49e97c9 TS |
12584 | ++c; |
12585 | ||
12586 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 12587 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 12588 | if (n == NULL) |
b34976b6 | 12589 | return FALSE; |
b49e97c9 TS |
12590 | *n = *m; |
12591 | n->count = c; | |
12592 | ||
12593 | i = 0; | |
12594 | for (s = abfd->sections; s != NULL; s = s->next) | |
12595 | { | |
12596 | if ((s->flags & SEC_LOAD) != 0 | |
12597 | && s->vma >= low | |
eea6121a | 12598 | && s->vma + s->size <= high) |
b49e97c9 TS |
12599 | { |
12600 | n->sections[i] = s; | |
12601 | ++i; | |
12602 | } | |
12603 | } | |
12604 | ||
12605 | *pm = n; | |
12606 | } | |
12607 | } | |
12608 | ||
98c904a8 RS |
12609 | /* Allocate a spare program header in dynamic objects so that tools |
12610 | like the prelinker can add an extra PT_LOAD entry. | |
12611 | ||
12612 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
12613 | standard procedure is to move the first (read-only) sections into | |
12614 | the new (writable) segment. However, the MIPS ABI requires | |
12615 | .dynamic to be in a read-only segment, and the section will often | |
12616 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
12617 | ||
12618 | Although the prelinker could in principle move .dynamic to a | |
12619 | writable segment, it seems better to allocate a spare program | |
12620 | header instead, and avoid the need to move any sections. | |
12621 | There is a long tradition of allocating spare dynamic tags, | |
12622 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
12623 | extension. |
12624 | ||
12625 | If INFO is NULL, we may be copying an already prelinked binary | |
12626 | with objcopy or strip, so do not add this header. */ | |
12627 | if (info != NULL | |
12628 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
12629 | && bfd_get_section_by_name (abfd, ".dynamic")) |
12630 | { | |
12bd6957 | 12631 | for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) |
98c904a8 RS |
12632 | if ((*pm)->p_type == PT_NULL) |
12633 | break; | |
12634 | if (*pm == NULL) | |
12635 | { | |
12636 | m = bfd_zalloc (abfd, sizeof (*m)); | |
12637 | if (m == NULL) | |
12638 | return FALSE; | |
12639 | ||
12640 | m->p_type = PT_NULL; | |
12641 | *pm = m; | |
12642 | } | |
12643 | } | |
12644 | ||
b34976b6 | 12645 | return TRUE; |
b49e97c9 TS |
12646 | } |
12647 | \f | |
12648 | /* Return the section that should be marked against GC for a given | |
12649 | relocation. */ | |
12650 | ||
12651 | asection * | |
9719ad41 | 12652 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 12653 | struct bfd_link_info *info, |
9719ad41 RS |
12654 | Elf_Internal_Rela *rel, |
12655 | struct elf_link_hash_entry *h, | |
12656 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
12657 | { |
12658 | /* ??? Do mips16 stub sections need to be handled special? */ | |
12659 | ||
12660 | if (h != NULL) | |
07adf181 AM |
12661 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
12662 | { | |
12663 | case R_MIPS_GNU_VTINHERIT: | |
12664 | case R_MIPS_GNU_VTENTRY: | |
12665 | return NULL; | |
12666 | } | |
b49e97c9 | 12667 | |
07adf181 | 12668 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
12669 | } |
12670 | ||
351cdf24 MF |
12671 | /* Prevent .MIPS.abiflags from being discarded with --gc-sections. */ |
12672 | ||
12673 | bfd_boolean | |
12674 | _bfd_mips_elf_gc_mark_extra_sections (struct bfd_link_info *info, | |
12675 | elf_gc_mark_hook_fn gc_mark_hook) | |
12676 | { | |
12677 | bfd *sub; | |
12678 | ||
12679 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); | |
12680 | ||
12681 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
12682 | { | |
12683 | asection *o; | |
12684 | ||
12685 | if (! is_mips_elf (sub)) | |
12686 | continue; | |
12687 | ||
12688 | for (o = sub->sections; o != NULL; o = o->next) | |
12689 | if (!o->gc_mark | |
12690 | && MIPS_ELF_ABIFLAGS_SECTION_NAME_P | |
12691 | (bfd_get_section_name (sub, o))) | |
12692 | { | |
12693 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
12694 | return FALSE; | |
12695 | } | |
12696 | } | |
12697 | ||
12698 | return TRUE; | |
12699 | } | |
b49e97c9 TS |
12700 | \f |
12701 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
12702 | hiding the old indirect symbol. Process additional relocation | |
12703 | information. Also called for weakdefs, in which case we just let | |
12704 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
12705 | ||
12706 | void | |
fcfa13d2 | 12707 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
12708 | struct elf_link_hash_entry *dir, |
12709 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
12710 | { |
12711 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
12712 | ||
fcfa13d2 | 12713 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 12714 | |
861fb55a DJ |
12715 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
12716 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
12717 | /* Any absolute non-dynamic relocations against an indirect or weak | |
12718 | definition will be against the target symbol. */ | |
12719 | if (indmips->has_static_relocs) | |
12720 | dirmips->has_static_relocs = TRUE; | |
12721 | ||
b49e97c9 TS |
12722 | if (ind->root.type != bfd_link_hash_indirect) |
12723 | return; | |
12724 | ||
b49e97c9 TS |
12725 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
12726 | if (indmips->readonly_reloc) | |
b34976b6 | 12727 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 12728 | if (indmips->no_fn_stub) |
b34976b6 | 12729 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
12730 | if (indmips->fn_stub) |
12731 | { | |
12732 | dirmips->fn_stub = indmips->fn_stub; | |
12733 | indmips->fn_stub = NULL; | |
12734 | } | |
12735 | if (indmips->need_fn_stub) | |
12736 | { | |
12737 | dirmips->need_fn_stub = TRUE; | |
12738 | indmips->need_fn_stub = FALSE; | |
12739 | } | |
12740 | if (indmips->call_stub) | |
12741 | { | |
12742 | dirmips->call_stub = indmips->call_stub; | |
12743 | indmips->call_stub = NULL; | |
12744 | } | |
12745 | if (indmips->call_fp_stub) | |
12746 | { | |
12747 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
12748 | indmips->call_fp_stub = NULL; | |
12749 | } | |
634835ae RS |
12750 | if (indmips->global_got_area < dirmips->global_got_area) |
12751 | dirmips->global_got_area = indmips->global_got_area; | |
12752 | if (indmips->global_got_area < GGA_NONE) | |
12753 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
12754 | if (indmips->has_nonpic_branches) |
12755 | dirmips->has_nonpic_branches = TRUE; | |
b49e97c9 | 12756 | } |
47275900 MR |
12757 | |
12758 | /* Take care of the special `__gnu_absolute_zero' symbol and ignore attempts | |
12759 | to hide it. It has to remain global (it will also be protected) so as to | |
12760 | be assigned a global GOT entry, which will then remain unchanged at load | |
12761 | time. */ | |
12762 | ||
12763 | void | |
12764 | _bfd_mips_elf_hide_symbol (struct bfd_link_info *info, | |
12765 | struct elf_link_hash_entry *entry, | |
12766 | bfd_boolean force_local) | |
12767 | { | |
12768 | struct mips_elf_link_hash_table *htab; | |
12769 | ||
12770 | htab = mips_elf_hash_table (info); | |
12771 | BFD_ASSERT (htab != NULL); | |
12772 | if (htab->use_absolute_zero | |
12773 | && strcmp (entry->root.root.string, "__gnu_absolute_zero") == 0) | |
12774 | return; | |
12775 | ||
12776 | _bfd_elf_link_hash_hide_symbol (info, entry, force_local); | |
12777 | } | |
b49e97c9 | 12778 | \f |
d01414a5 TS |
12779 | #define PDR_SIZE 32 |
12780 | ||
b34976b6 | 12781 | bfd_boolean |
9719ad41 RS |
12782 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
12783 | struct bfd_link_info *info) | |
d01414a5 TS |
12784 | { |
12785 | asection *o; | |
b34976b6 | 12786 | bfd_boolean ret = FALSE; |
d01414a5 TS |
12787 | unsigned char *tdata; |
12788 | size_t i, skip; | |
12789 | ||
12790 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
12791 | if (! o) | |
b34976b6 | 12792 | return FALSE; |
eea6121a | 12793 | if (o->size == 0) |
b34976b6 | 12794 | return FALSE; |
eea6121a | 12795 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 12796 | return FALSE; |
d01414a5 TS |
12797 | if (o->output_section != NULL |
12798 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 12799 | return FALSE; |
d01414a5 | 12800 | |
eea6121a | 12801 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 12802 | if (! tdata) |
b34976b6 | 12803 | return FALSE; |
d01414a5 | 12804 | |
9719ad41 | 12805 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 12806 | info->keep_memory); |
d01414a5 TS |
12807 | if (!cookie->rels) |
12808 | { | |
12809 | free (tdata); | |
b34976b6 | 12810 | return FALSE; |
d01414a5 TS |
12811 | } |
12812 | ||
12813 | cookie->rel = cookie->rels; | |
12814 | cookie->relend = cookie->rels + o->reloc_count; | |
12815 | ||
eea6121a | 12816 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 12817 | { |
c152c796 | 12818 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
12819 | { |
12820 | tdata[i] = 1; | |
12821 | skip ++; | |
12822 | } | |
12823 | } | |
12824 | ||
12825 | if (skip != 0) | |
12826 | { | |
f0abc2a1 | 12827 | mips_elf_section_data (o)->u.tdata = tdata; |
e034b2cc MR |
12828 | if (o->rawsize == 0) |
12829 | o->rawsize = o->size; | |
eea6121a | 12830 | o->size -= skip * PDR_SIZE; |
b34976b6 | 12831 | ret = TRUE; |
d01414a5 TS |
12832 | } |
12833 | else | |
12834 | free (tdata); | |
12835 | ||
12836 | if (! info->keep_memory) | |
12837 | free (cookie->rels); | |
12838 | ||
12839 | return ret; | |
12840 | } | |
12841 | ||
b34976b6 | 12842 | bfd_boolean |
9719ad41 | 12843 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
12844 | { |
12845 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
12846 | return TRUE; |
12847 | return FALSE; | |
53bfd6b4 | 12848 | } |
d01414a5 | 12849 | |
b34976b6 | 12850 | bfd_boolean |
c7b8f16e JB |
12851 | _bfd_mips_elf_write_section (bfd *output_bfd, |
12852 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
07d6d2b8 | 12853 | asection *sec, bfd_byte *contents) |
d01414a5 TS |
12854 | { |
12855 | bfd_byte *to, *from, *end; | |
12856 | int i; | |
12857 | ||
12858 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 12859 | return FALSE; |
d01414a5 | 12860 | |
f0abc2a1 | 12861 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 12862 | return FALSE; |
d01414a5 TS |
12863 | |
12864 | to = contents; | |
eea6121a | 12865 | end = contents + sec->size; |
d01414a5 TS |
12866 | for (from = contents, i = 0; |
12867 | from < end; | |
12868 | from += PDR_SIZE, i++) | |
12869 | { | |
f0abc2a1 | 12870 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
12871 | continue; |
12872 | if (to != from) | |
12873 | memcpy (to, from, PDR_SIZE); | |
12874 | to += PDR_SIZE; | |
12875 | } | |
12876 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 12877 | sec->output_offset, sec->size); |
b34976b6 | 12878 | return TRUE; |
d01414a5 | 12879 | } |
53bfd6b4 | 12880 | \f |
df58fc94 RS |
12881 | /* microMIPS code retains local labels for linker relaxation. Omit them |
12882 | from output by default for clarity. */ | |
12883 | ||
12884 | bfd_boolean | |
12885 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) | |
12886 | { | |
12887 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
12888 | } | |
12889 | ||
b49e97c9 TS |
12890 | /* MIPS ELF uses a special find_nearest_line routine in order the |
12891 | handle the ECOFF debugging information. */ | |
12892 | ||
12893 | struct mips_elf_find_line | |
12894 | { | |
12895 | struct ecoff_debug_info d; | |
12896 | struct ecoff_find_line i; | |
12897 | }; | |
12898 | ||
b34976b6 | 12899 | bfd_boolean |
fb167eb2 AM |
12900 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asymbol **symbols, |
12901 | asection *section, bfd_vma offset, | |
9719ad41 RS |
12902 | const char **filename_ptr, |
12903 | const char **functionname_ptr, | |
fb167eb2 AM |
12904 | unsigned int *line_ptr, |
12905 | unsigned int *discriminator_ptr) | |
b49e97c9 TS |
12906 | { |
12907 | asection *msec; | |
12908 | ||
fb167eb2 | 12909 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
b49e97c9 | 12910 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
12911 | line_ptr, discriminator_ptr, |
12912 | dwarf_debug_sections, | |
12913 | ABI_64_P (abfd) ? 8 : 0, | |
46d09186 NC |
12914 | &elf_tdata (abfd)->dwarf2_find_line_info) |
12915 | || _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset, | |
12916 | filename_ptr, functionname_ptr, | |
12917 | line_ptr)) | |
12918 | { | |
12919 | /* PR 22789: If the function name or filename was not found through | |
12920 | the debug information, then try an ordinary lookup instead. */ | |
12921 | if ((functionname_ptr != NULL && *functionname_ptr == NULL) | |
12922 | || (filename_ptr != NULL && *filename_ptr == NULL)) | |
12923 | { | |
12924 | /* Do not override already discovered names. */ | |
12925 | if (functionname_ptr != NULL && *functionname_ptr != NULL) | |
12926 | functionname_ptr = NULL; | |
b49e97c9 | 12927 | |
46d09186 NC |
12928 | if (filename_ptr != NULL && *filename_ptr != NULL) |
12929 | filename_ptr = NULL; | |
12930 | ||
12931 | _bfd_elf_find_function (abfd, symbols, section, offset, | |
12932 | filename_ptr, functionname_ptr); | |
12933 | } | |
12934 | ||
12935 | return TRUE; | |
12936 | } | |
b49e97c9 TS |
12937 | |
12938 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
12939 | if (msec != NULL) | |
12940 | { | |
12941 | flagword origflags; | |
12942 | struct mips_elf_find_line *fi; | |
12943 | const struct ecoff_debug_swap * const swap = | |
12944 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
12945 | ||
12946 | /* If we are called during a link, mips_elf_final_link may have | |
12947 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
12948 | if appropriate (which it normally will be). */ | |
12949 | origflags = msec->flags; | |
12950 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
12951 | msec->flags |= SEC_HAS_CONTENTS; | |
12952 | ||
698600e4 | 12953 | fi = mips_elf_tdata (abfd)->find_line_info; |
b49e97c9 TS |
12954 | if (fi == NULL) |
12955 | { | |
12956 | bfd_size_type external_fdr_size; | |
12957 | char *fraw_src; | |
12958 | char *fraw_end; | |
12959 | struct fdr *fdr_ptr; | |
12960 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
12961 | ||
9719ad41 | 12962 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
12963 | if (fi == NULL) |
12964 | { | |
12965 | msec->flags = origflags; | |
b34976b6 | 12966 | return FALSE; |
b49e97c9 TS |
12967 | } |
12968 | ||
12969 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
12970 | { | |
12971 | msec->flags = origflags; | |
b34976b6 | 12972 | return FALSE; |
b49e97c9 TS |
12973 | } |
12974 | ||
12975 | /* Swap in the FDR information. */ | |
12976 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 12977 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
12978 | if (fi->d.fdr == NULL) |
12979 | { | |
12980 | msec->flags = origflags; | |
b34976b6 | 12981 | return FALSE; |
b49e97c9 TS |
12982 | } |
12983 | external_fdr_size = swap->external_fdr_size; | |
12984 | fdr_ptr = fi->d.fdr; | |
12985 | fraw_src = (char *) fi->d.external_fdr; | |
12986 | fraw_end = (fraw_src | |
12987 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
12988 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 12989 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 | 12990 | |
698600e4 | 12991 | mips_elf_tdata (abfd)->find_line_info = fi; |
b49e97c9 TS |
12992 | |
12993 | /* Note that we don't bother to ever free this information. | |
07d6d2b8 AM |
12994 | find_nearest_line is either called all the time, as in |
12995 | objdump -l, so the information should be saved, or it is | |
12996 | rarely called, as in ld error messages, so the memory | |
12997 | wasted is unimportant. Still, it would probably be a | |
12998 | good idea for free_cached_info to throw it away. */ | |
b49e97c9 TS |
12999 | } |
13000 | ||
13001 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
13002 | &fi->i, filename_ptr, functionname_ptr, | |
13003 | line_ptr)) | |
13004 | { | |
13005 | msec->flags = origflags; | |
b34976b6 | 13006 | return TRUE; |
b49e97c9 TS |
13007 | } |
13008 | ||
13009 | msec->flags = origflags; | |
13010 | } | |
13011 | ||
13012 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
13013 | ||
fb167eb2 | 13014 | return _bfd_elf_find_nearest_line (abfd, symbols, section, offset, |
b49e97c9 | 13015 | filename_ptr, functionname_ptr, |
fb167eb2 | 13016 | line_ptr, discriminator_ptr); |
b49e97c9 | 13017 | } |
4ab527b0 FF |
13018 | |
13019 | bfd_boolean | |
13020 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
13021 | const char **filename_ptr, | |
13022 | const char **functionname_ptr, | |
13023 | unsigned int *line_ptr) | |
13024 | { | |
13025 | bfd_boolean found; | |
13026 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
13027 | functionname_ptr, line_ptr, | |
13028 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
13029 | return found; | |
13030 | } | |
13031 | ||
b49e97c9 TS |
13032 | \f |
13033 | /* When are writing out the .options or .MIPS.options section, | |
13034 | remember the bytes we are writing out, so that we can install the | |
13035 | GP value in the section_processing routine. */ | |
13036 | ||
b34976b6 | 13037 | bfd_boolean |
9719ad41 RS |
13038 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
13039 | const void *location, | |
13040 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 13041 | { |
cc2e31b9 | 13042 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
13043 | { |
13044 | bfd_byte *c; | |
13045 | ||
13046 | if (elf_section_data (section) == NULL) | |
13047 | { | |
13048 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 13049 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 13050 | if (elf_section_data (section) == NULL) |
b34976b6 | 13051 | return FALSE; |
b49e97c9 | 13052 | } |
f0abc2a1 | 13053 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
13054 | if (c == NULL) |
13055 | { | |
eea6121a | 13056 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 13057 | if (c == NULL) |
b34976b6 | 13058 | return FALSE; |
f0abc2a1 | 13059 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
13060 | } |
13061 | ||
9719ad41 | 13062 | memcpy (c + offset, location, count); |
b49e97c9 TS |
13063 | } |
13064 | ||
13065 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
13066 | count); | |
13067 | } | |
13068 | ||
13069 | /* This is almost identical to bfd_generic_get_... except that some | |
13070 | MIPS relocations need to be handled specially. Sigh. */ | |
13071 | ||
13072 | bfd_byte * | |
9719ad41 RS |
13073 | _bfd_elf_mips_get_relocated_section_contents |
13074 | (bfd *abfd, | |
13075 | struct bfd_link_info *link_info, | |
13076 | struct bfd_link_order *link_order, | |
13077 | bfd_byte *data, | |
13078 | bfd_boolean relocatable, | |
13079 | asymbol **symbols) | |
b49e97c9 TS |
13080 | { |
13081 | /* Get enough memory to hold the stuff */ | |
13082 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
13083 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 13084 | bfd_size_type sz; |
b49e97c9 TS |
13085 | |
13086 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
13087 | arelent **reloc_vector = NULL; | |
13088 | long reloc_count; | |
13089 | ||
13090 | if (reloc_size < 0) | |
13091 | goto error_return; | |
13092 | ||
9719ad41 | 13093 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
13094 | if (reloc_vector == NULL && reloc_size != 0) |
13095 | goto error_return; | |
13096 | ||
13097 | /* read in the section */ | |
eea6121a AM |
13098 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
13099 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
13100 | goto error_return; |
13101 | ||
b49e97c9 TS |
13102 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
13103 | input_section, | |
13104 | reloc_vector, | |
13105 | symbols); | |
13106 | if (reloc_count < 0) | |
13107 | goto error_return; | |
13108 | ||
13109 | if (reloc_count > 0) | |
13110 | { | |
13111 | arelent **parent; | |
13112 | /* for mips */ | |
13113 | int gp_found; | |
13114 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
13115 | ||
13116 | { | |
13117 | struct bfd_hash_entry *h; | |
13118 | struct bfd_link_hash_entry *lh; | |
13119 | /* Skip all this stuff if we aren't mixing formats. */ | |
13120 | if (abfd && input_bfd | |
13121 | && abfd->xvec == input_bfd->xvec) | |
13122 | lh = 0; | |
13123 | else | |
13124 | { | |
b34976b6 | 13125 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
13126 | lh = (struct bfd_link_hash_entry *) h; |
13127 | } | |
13128 | lookup: | |
13129 | if (lh) | |
13130 | { | |
13131 | switch (lh->type) | |
13132 | { | |
13133 | case bfd_link_hash_undefined: | |
13134 | case bfd_link_hash_undefweak: | |
13135 | case bfd_link_hash_common: | |
13136 | gp_found = 0; | |
13137 | break; | |
13138 | case bfd_link_hash_defined: | |
13139 | case bfd_link_hash_defweak: | |
13140 | gp_found = 1; | |
13141 | gp = lh->u.def.value; | |
13142 | break; | |
13143 | case bfd_link_hash_indirect: | |
13144 | case bfd_link_hash_warning: | |
13145 | lh = lh->u.i.link; | |
13146 | /* @@FIXME ignoring warning for now */ | |
13147 | goto lookup; | |
13148 | case bfd_link_hash_new: | |
13149 | default: | |
13150 | abort (); | |
13151 | } | |
13152 | } | |
13153 | else | |
13154 | gp_found = 0; | |
13155 | } | |
13156 | /* end mips */ | |
9719ad41 | 13157 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 13158 | { |
9719ad41 | 13159 | char *error_message = NULL; |
b49e97c9 TS |
13160 | bfd_reloc_status_type r; |
13161 | ||
13162 | /* Specific to MIPS: Deal with relocation types that require | |
13163 | knowing the gp of the output bfd. */ | |
13164 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 13165 | |
8236346f EC |
13166 | /* If we've managed to find the gp and have a special |
13167 | function for the relocation then go ahead, else default | |
13168 | to the generic handling. */ | |
13169 | if (gp_found | |
13170 | && (*parent)->howto->special_function | |
13171 | == _bfd_mips_elf32_gprel16_reloc) | |
13172 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
13173 | input_section, relocatable, | |
13174 | data, gp); | |
13175 | else | |
86324f90 | 13176 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
13177 | input_section, |
13178 | relocatable ? abfd : NULL, | |
13179 | &error_message); | |
b49e97c9 | 13180 | |
1049f94e | 13181 | if (relocatable) |
b49e97c9 TS |
13182 | { |
13183 | asection *os = input_section->output_section; | |
13184 | ||
13185 | /* A partial link, so keep the relocs */ | |
13186 | os->orelocation[os->reloc_count] = *parent; | |
13187 | os->reloc_count++; | |
13188 | } | |
13189 | ||
13190 | if (r != bfd_reloc_ok) | |
13191 | { | |
13192 | switch (r) | |
13193 | { | |
13194 | case bfd_reloc_undefined: | |
1a72702b AM |
13195 | (*link_info->callbacks->undefined_symbol) |
13196 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13197 | input_bfd, input_section, (*parent)->address, TRUE); | |
b49e97c9 TS |
13198 | break; |
13199 | case bfd_reloc_dangerous: | |
9719ad41 | 13200 | BFD_ASSERT (error_message != NULL); |
1a72702b AM |
13201 | (*link_info->callbacks->reloc_dangerous) |
13202 | (link_info, error_message, | |
13203 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
13204 | break; |
13205 | case bfd_reloc_overflow: | |
1a72702b AM |
13206 | (*link_info->callbacks->reloc_overflow) |
13207 | (link_info, NULL, | |
13208 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13209 | (*parent)->howto->name, (*parent)->addend, | |
13210 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
13211 | break; |
13212 | case bfd_reloc_outofrange: | |
13213 | default: | |
13214 | abort (); | |
13215 | break; | |
13216 | } | |
13217 | ||
13218 | } | |
13219 | } | |
13220 | } | |
13221 | if (reloc_vector != NULL) | |
13222 | free (reloc_vector); | |
13223 | return data; | |
13224 | ||
13225 | error_return: | |
13226 | if (reloc_vector != NULL) | |
13227 | free (reloc_vector); | |
13228 | return NULL; | |
13229 | } | |
13230 | \f | |
df58fc94 RS |
13231 | static bfd_boolean |
13232 | mips_elf_relax_delete_bytes (bfd *abfd, | |
13233 | asection *sec, bfd_vma addr, int count) | |
13234 | { | |
13235 | Elf_Internal_Shdr *symtab_hdr; | |
13236 | unsigned int sec_shndx; | |
13237 | bfd_byte *contents; | |
13238 | Elf_Internal_Rela *irel, *irelend; | |
13239 | Elf_Internal_Sym *isym; | |
13240 | Elf_Internal_Sym *isymend; | |
13241 | struct elf_link_hash_entry **sym_hashes; | |
13242 | struct elf_link_hash_entry **end_hashes; | |
13243 | struct elf_link_hash_entry **start_hashes; | |
13244 | unsigned int symcount; | |
13245 | ||
13246 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
13247 | contents = elf_section_data (sec)->this_hdr.contents; | |
13248 | ||
13249 | irel = elf_section_data (sec)->relocs; | |
13250 | irelend = irel + sec->reloc_count; | |
13251 | ||
13252 | /* Actually delete the bytes. */ | |
13253 | memmove (contents + addr, contents + addr + count, | |
13254 | (size_t) (sec->size - addr - count)); | |
13255 | sec->size -= count; | |
13256 | ||
13257 | /* Adjust all the relocs. */ | |
13258 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
13259 | { | |
13260 | /* Get the new reloc address. */ | |
13261 | if (irel->r_offset > addr) | |
13262 | irel->r_offset -= count; | |
13263 | } | |
13264 | ||
13265 | BFD_ASSERT (addr % 2 == 0); | |
13266 | BFD_ASSERT (count % 2 == 0); | |
13267 | ||
13268 | /* Adjust the local symbols defined in this section. */ | |
13269 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13270 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
13271 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 13272 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
13273 | isym->st_value -= count; |
13274 | ||
13275 | /* Now adjust the global symbols defined in this section. */ | |
13276 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
13277 | - symtab_hdr->sh_info); | |
13278 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
13279 | end_hashes = sym_hashes + symcount; | |
13280 | ||
13281 | for (; sym_hashes < end_hashes; sym_hashes++) | |
13282 | { | |
13283 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
13284 | ||
13285 | if ((sym_hash->root.type == bfd_link_hash_defined | |
13286 | || sym_hash->root.type == bfd_link_hash_defweak) | |
13287 | && sym_hash->root.u.def.section == sec) | |
13288 | { | |
2309ddf2 | 13289 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 13290 | |
df58fc94 RS |
13291 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
13292 | value &= MINUS_TWO; | |
13293 | if (value > addr) | |
13294 | sym_hash->root.u.def.value -= count; | |
13295 | } | |
13296 | } | |
13297 | ||
13298 | return TRUE; | |
13299 | } | |
13300 | ||
13301 | ||
13302 | /* Opcodes needed for microMIPS relaxation as found in | |
13303 | opcodes/micromips-opc.c. */ | |
13304 | ||
13305 | struct opcode_descriptor { | |
13306 | unsigned long match; | |
13307 | unsigned long mask; | |
13308 | }; | |
13309 | ||
13310 | /* The $ra register aka $31. */ | |
13311 | ||
13312 | #define RA 31 | |
13313 | ||
13314 | /* 32-bit instruction format register fields. */ | |
13315 | ||
13316 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
13317 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
13318 | ||
13319 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
13320 | ||
13321 | #define OP16_VALID_REG(r) \ | |
13322 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
13323 | ||
13324 | ||
13325 | /* 32-bit and 16-bit branches. */ | |
13326 | ||
13327 | static const struct opcode_descriptor b_insns_32[] = { | |
13328 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
13329 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
13330 | { 0, 0 } /* End marker for find_match(). */ | |
13331 | }; | |
13332 | ||
13333 | static const struct opcode_descriptor bc_insn_32 = | |
13334 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
13335 | ||
13336 | static const struct opcode_descriptor bz_insn_32 = | |
13337 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
13338 | ||
13339 | static const struct opcode_descriptor bzal_insn_32 = | |
13340 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
13341 | ||
13342 | static const struct opcode_descriptor beq_insn_32 = | |
13343 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
13344 | ||
13345 | static const struct opcode_descriptor b_insn_16 = | |
13346 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
13347 | ||
13348 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 13349 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
13350 | |
13351 | ||
13352 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
13353 | ||
13354 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
13355 | eq and second the ne. This convention is used when replacing a | |
13356 | 32-bit BEQ/BNE with the 16-bit version. */ | |
13357 | ||
13358 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
13359 | ||
13360 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
13361 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
13362 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
13363 | { 0, 0 } /* End marker for find_match(). */ | |
13364 | }; | |
13365 | ||
13366 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
13367 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
13368 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
13369 | { 0, 0 } /* End marker for find_match(). */ | |
13370 | }; | |
13371 | ||
13372 | static const struct opcode_descriptor bzc_insns_32[] = { | |
13373 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
13374 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
13375 | { 0, 0 } /* End marker for find_match(). */ | |
13376 | }; | |
13377 | ||
13378 | static const struct opcode_descriptor bz_insns_16[] = { | |
13379 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
13380 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
13381 | { 0, 0 } /* End marker for find_match(). */ | |
13382 | }; | |
13383 | ||
13384 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
13385 | ||
e67f83e5 | 13386 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0xf) + 2) |
eb6b0cf4 | 13387 | #define BZ16_REG_FIELD(r) (((r) & 7) << 7) |
df58fc94 RS |
13388 | |
13389 | ||
13390 | /* 32-bit instructions with a delay slot. */ | |
13391 | ||
13392 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
13393 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
13394 | ||
13395 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
13396 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
13397 | ||
13398 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
13399 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
13400 | ||
13401 | static const struct opcode_descriptor j_insn_32 = | |
13402 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
13403 | ||
13404 | static const struct opcode_descriptor jalr_insn_32 = | |
13405 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
13406 | ||
13407 | /* This table can be compacted, because no opcode replacement is made. */ | |
13408 | ||
13409 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
13410 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
13411 | ||
13412 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
13413 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
13414 | ||
13415 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
13416 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
13417 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
13418 | { 0, 0 } /* End marker for find_match(). */ | |
13419 | }; | |
13420 | ||
13421 | /* This table can be compacted, because no opcode replacement is made. */ | |
13422 | ||
13423 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
13424 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
13425 | ||
13426 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
13427 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
13428 | { 0, 0 } /* End marker for find_match(). */ | |
13429 | }; | |
13430 | ||
13431 | ||
13432 | /* 16-bit instructions with a delay slot. */ | |
13433 | ||
13434 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
13435 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
13436 | ||
13437 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
13438 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
13439 | ||
13440 | static const struct opcode_descriptor jr_insn_16 = | |
13441 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
13442 | ||
13443 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
13444 | ||
13445 | /* This table can be compacted, because no opcode replacement is made. */ | |
13446 | ||
13447 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
13448 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
13449 | ||
13450 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
13451 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
13452 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
13453 | { 0, 0 } /* End marker for find_match(). */ | |
13454 | }; | |
13455 | ||
13456 | ||
13457 | /* LUI instruction. */ | |
13458 | ||
13459 | static const struct opcode_descriptor lui_insn = | |
13460 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
13461 | ||
13462 | ||
13463 | /* ADDIU instruction. */ | |
13464 | ||
13465 | static const struct opcode_descriptor addiu_insn = | |
13466 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
13467 | ||
13468 | static const struct opcode_descriptor addiupc_insn = | |
13469 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
13470 | ||
13471 | #define ADDIUPC_REG_FIELD(r) \ | |
13472 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
13473 | ||
13474 | ||
13475 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
13476 | ||
13477 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
13478 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
13479 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
13480 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
13481 | ||
13482 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
13483 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
13484 | ||
13485 | static const struct opcode_descriptor move_insns_32[] = { | |
df58fc94 | 13486 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ |
40fc1451 | 13487 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ |
df58fc94 RS |
13488 | { 0, 0 } /* End marker for find_match(). */ |
13489 | }; | |
13490 | ||
13491 | static const struct opcode_descriptor move_insn_16 = | |
13492 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
13493 | ||
13494 | ||
13495 | /* NOP instructions. */ | |
13496 | ||
13497 | static const struct opcode_descriptor nop_insn_32 = | |
13498 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
13499 | ||
13500 | static const struct opcode_descriptor nop_insn_16 = | |
13501 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
13502 | ||
13503 | ||
13504 | /* Instruction match support. */ | |
13505 | ||
13506 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
13507 | ||
13508 | static int | |
13509 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
13510 | { | |
13511 | unsigned long indx; | |
13512 | ||
13513 | for (indx = 0; insn[indx].mask != 0; indx++) | |
13514 | if (MATCH (opcode, insn[indx])) | |
13515 | return indx; | |
13516 | ||
13517 | return -1; | |
13518 | } | |
13519 | ||
13520 | ||
13521 | /* Branch and delay slot decoding support. */ | |
13522 | ||
13523 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
13524 | return the minimum length of its delay slot, otherwise return 0. | |
13525 | Non-zero results are not definitive as we might be checking against | |
13526 | the second half of another instruction. */ | |
13527 | ||
13528 | static int | |
13529 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
13530 | { | |
13531 | unsigned long opcode; | |
13532 | int bdsize; | |
13533 | ||
13534 | opcode = bfd_get_16 (abfd, ptr); | |
13535 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
13536 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
13537 | bdsize = 4; | |
13538 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
13539 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
13540 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
13541 | bdsize = 2; | |
13542 | else | |
13543 | /* No delay slot. */ | |
13544 | bdsize = 0; | |
13545 | ||
13546 | return bdsize; | |
13547 | } | |
13548 | ||
13549 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
13550 | return the minimum length of its delay slot, otherwise return 0. | |
13551 | Non-zero results are not definitive as we might be checking against | |
13552 | the second half of another instruction. */ | |
13553 | ||
13554 | static int | |
13555 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
13556 | { | |
13557 | unsigned long opcode; | |
13558 | int bdsize; | |
13559 | ||
d21911ea | 13560 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13561 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
13562 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
13563 | bdsize = 4; | |
13564 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
13565 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
13566 | bdsize = 2; | |
13567 | else | |
13568 | /* No delay slot. */ | |
13569 | bdsize = 0; | |
13570 | ||
13571 | return bdsize; | |
13572 | } | |
13573 | ||
13574 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
13575 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
13576 | ||
13577 | static bfd_boolean | |
13578 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) | |
13579 | { | |
13580 | unsigned long opcode; | |
13581 | ||
13582 | opcode = bfd_get_16 (abfd, ptr); | |
13583 | if (MATCH (opcode, b_insn_16) | |
13584 | /* B16 */ | |
13585 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
13586 | /* JR16 */ | |
13587 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
13588 | /* BEQZ16, BNEZ16 */ | |
13589 | || (MATCH (opcode, jalr_insn_16_bd32) | |
13590 | /* JALR16 */ | |
13591 | && reg != JR16_REG (opcode) && reg != RA)) | |
13592 | return TRUE; | |
13593 | ||
13594 | return FALSE; | |
13595 | } | |
13596 | ||
13597 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
13598 | then return TRUE, otherwise FALSE. */ | |
13599 | ||
f41e5fcc | 13600 | static bfd_boolean |
df58fc94 RS |
13601 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
13602 | { | |
13603 | unsigned long opcode; | |
13604 | ||
d21911ea | 13605 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13606 | if (MATCH (opcode, j_insn_32) |
13607 | /* J */ | |
13608 | || MATCH (opcode, bc_insn_32) | |
13609 | /* BC1F, BC1T, BC2F, BC2T */ | |
13610 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
13611 | /* JAL, JALX */ | |
13612 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
13613 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
13614 | || (MATCH (opcode, bzal_insn_32) | |
13615 | /* BGEZAL, BLTZAL */ | |
13616 | && reg != OP32_SREG (opcode) && reg != RA) | |
13617 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
13618 | /* JALR, JALR.HB, BEQ, BNE */ | |
13619 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
13620 | return TRUE; | |
13621 | ||
13622 | return FALSE; | |
13623 | } | |
13624 | ||
80cab405 MR |
13625 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
13626 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
13627 | then return TRUE, otherwise FALSE. */ | |
df58fc94 RS |
13628 | |
13629 | static bfd_boolean | |
80cab405 MR |
13630 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
13631 | const Elf_Internal_Rela *internal_relocs, | |
13632 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 13633 | { |
80cab405 MR |
13634 | const Elf_Internal_Rela *irel; |
13635 | unsigned long opcode; | |
13636 | ||
d21911ea | 13637 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 MR |
13638 | if (find_match (opcode, bzc_insns_32) < 0) |
13639 | return FALSE; | |
df58fc94 RS |
13640 | |
13641 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
13642 | if (irel->r_offset == offset |
13643 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
13644 | return TRUE; | |
13645 | ||
df58fc94 RS |
13646 | return FALSE; |
13647 | } | |
80cab405 MR |
13648 | |
13649 | /* Bitsize checking. */ | |
13650 | #define IS_BITSIZE(val, N) \ | |
13651 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
13652 | - (1ULL << ((N) - 1))) == (val)) | |
13653 | ||
df58fc94 RS |
13654 | \f |
13655 | bfd_boolean | |
13656 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, | |
13657 | struct bfd_link_info *link_info, | |
13658 | bfd_boolean *again) | |
13659 | { | |
833794fc | 13660 | bfd_boolean insn32 = mips_elf_hash_table (link_info)->insn32; |
df58fc94 RS |
13661 | Elf_Internal_Shdr *symtab_hdr; |
13662 | Elf_Internal_Rela *internal_relocs; | |
13663 | Elf_Internal_Rela *irel, *irelend; | |
13664 | bfd_byte *contents = NULL; | |
13665 | Elf_Internal_Sym *isymbuf = NULL; | |
13666 | ||
13667 | /* Assume nothing changes. */ | |
13668 | *again = FALSE; | |
13669 | ||
13670 | /* We don't have to do anything for a relocatable link, if | |
13671 | this section does not have relocs, or if this is not a | |
13672 | code section. */ | |
13673 | ||
0e1862bb | 13674 | if (bfd_link_relocatable (link_info) |
df58fc94 RS |
13675 | || (sec->flags & SEC_RELOC) == 0 |
13676 | || sec->reloc_count == 0 | |
13677 | || (sec->flags & SEC_CODE) == 0) | |
13678 | return TRUE; | |
13679 | ||
13680 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13681 | ||
13682 | /* Get a copy of the native relocations. */ | |
13683 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 13684 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
13685 | link_info->keep_memory)); |
13686 | if (internal_relocs == NULL) | |
13687 | goto error_return; | |
13688 | ||
13689 | /* Walk through them looking for relaxing opportunities. */ | |
13690 | irelend = internal_relocs + sec->reloc_count; | |
13691 | for (irel = internal_relocs; irel < irelend; irel++) | |
13692 | { | |
13693 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
13694 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
13695 | bfd_boolean target_is_micromips_code_p; | |
13696 | unsigned long opcode; | |
13697 | bfd_vma symval; | |
13698 | bfd_vma pcrval; | |
2309ddf2 | 13699 | bfd_byte *ptr; |
df58fc94 RS |
13700 | int fndopc; |
13701 | ||
13702 | /* The number of bytes to delete for relaxation and from where | |
07d6d2b8 | 13703 | to delete these bytes starting at irel->r_offset. */ |
df58fc94 RS |
13704 | int delcnt = 0; |
13705 | int deloff = 0; | |
13706 | ||
13707 | /* If this isn't something that can be relaxed, then ignore | |
07d6d2b8 | 13708 | this reloc. */ |
df58fc94 RS |
13709 | if (r_type != R_MICROMIPS_HI16 |
13710 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 13711 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
13712 | continue; |
13713 | ||
13714 | /* Get the section contents if we haven't done so already. */ | |
13715 | if (contents == NULL) | |
13716 | { | |
13717 | /* Get cached copy if it exists. */ | |
13718 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
13719 | contents = elf_section_data (sec)->this_hdr.contents; | |
13720 | /* Go get them off disk. */ | |
13721 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
13722 | goto error_return; | |
13723 | } | |
2309ddf2 | 13724 | ptr = contents + irel->r_offset; |
df58fc94 RS |
13725 | |
13726 | /* Read this BFD's local symbols if we haven't done so already. */ | |
13727 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
13728 | { | |
13729 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
13730 | if (isymbuf == NULL) | |
13731 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
13732 | symtab_hdr->sh_info, 0, | |
13733 | NULL, NULL, NULL); | |
13734 | if (isymbuf == NULL) | |
13735 | goto error_return; | |
13736 | } | |
13737 | ||
13738 | /* Get the value of the symbol referred to by the reloc. */ | |
13739 | if (r_symndx < symtab_hdr->sh_info) | |
13740 | { | |
13741 | /* A local symbol. */ | |
13742 | Elf_Internal_Sym *isym; | |
13743 | asection *sym_sec; | |
13744 | ||
13745 | isym = isymbuf + r_symndx; | |
13746 | if (isym->st_shndx == SHN_UNDEF) | |
13747 | sym_sec = bfd_und_section_ptr; | |
13748 | else if (isym->st_shndx == SHN_ABS) | |
13749 | sym_sec = bfd_abs_section_ptr; | |
13750 | else if (isym->st_shndx == SHN_COMMON) | |
13751 | sym_sec = bfd_com_section_ptr; | |
13752 | else | |
13753 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
13754 | symval = (isym->st_value | |
13755 | + sym_sec->output_section->vma | |
13756 | + sym_sec->output_offset); | |
13757 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
13758 | } | |
13759 | else | |
13760 | { | |
13761 | unsigned long indx; | |
13762 | struct elf_link_hash_entry *h; | |
13763 | ||
13764 | /* An external symbol. */ | |
13765 | indx = r_symndx - symtab_hdr->sh_info; | |
13766 | h = elf_sym_hashes (abfd)[indx]; | |
13767 | BFD_ASSERT (h != NULL); | |
13768 | ||
13769 | if (h->root.type != bfd_link_hash_defined | |
13770 | && h->root.type != bfd_link_hash_defweak) | |
13771 | /* This appears to be a reference to an undefined | |
13772 | symbol. Just ignore it -- it will be caught by the | |
13773 | regular reloc processing. */ | |
13774 | continue; | |
13775 | ||
13776 | symval = (h->root.u.def.value | |
13777 | + h->root.u.def.section->output_section->vma | |
13778 | + h->root.u.def.section->output_offset); | |
13779 | target_is_micromips_code_p = (!h->needs_plt | |
13780 | && ELF_ST_IS_MICROMIPS (h->other)); | |
13781 | } | |
13782 | ||
13783 | ||
13784 | /* For simplicity of coding, we are going to modify the | |
07d6d2b8 AM |
13785 | section contents, the section relocs, and the BFD symbol |
13786 | table. We must tell the rest of the code not to free up this | |
13787 | information. It would be possible to instead create a table | |
13788 | of changes which have to be made, as is done in coff-mips.c; | |
13789 | that would be more work, but would require less memory when | |
13790 | the linker is run. */ | |
df58fc94 RS |
13791 | |
13792 | /* Only 32-bit instructions relaxed. */ | |
13793 | if (irel->r_offset + 4 > sec->size) | |
13794 | continue; | |
13795 | ||
d21911ea | 13796 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13797 | |
13798 | /* This is the pc-relative distance from the instruction the | |
07d6d2b8 | 13799 | relocation is applied to, to the symbol referred. */ |
df58fc94 RS |
13800 | pcrval = (symval |
13801 | - (sec->output_section->vma + sec->output_offset) | |
13802 | - irel->r_offset); | |
13803 | ||
13804 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
07d6d2b8 AM |
13805 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or |
13806 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
df58fc94 | 13807 | |
07d6d2b8 | 13808 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) |
df58fc94 | 13809 | |
07d6d2b8 AM |
13810 | where pcrval has first to be adjusted to apply against the LO16 |
13811 | location (we make the adjustment later on, when we have figured | |
13812 | out the offset). */ | |
df58fc94 RS |
13813 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) |
13814 | { | |
80cab405 | 13815 | bfd_boolean bzc = FALSE; |
df58fc94 RS |
13816 | unsigned long nextopc; |
13817 | unsigned long reg; | |
13818 | bfd_vma offset; | |
13819 | ||
13820 | /* Give up if the previous reloc was a HI16 against this symbol | |
13821 | too. */ | |
13822 | if (irel > internal_relocs | |
13823 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
13824 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
13825 | continue; | |
13826 | ||
13827 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
13828 | if (irel + 1 >= irelend | |
13829 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
13830 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
13831 | continue; | |
13832 | ||
13833 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
13834 | if (irel + 2 >= irelend | |
13835 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
13836 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
13837 | continue; | |
13838 | ||
80cab405 MR |
13839 | /* See if the LUI instruction *might* be in a branch delay slot. |
13840 | We check whether what looks like a 16-bit branch or jump is | |
13841 | actually an immediate argument to a compact branch, and let | |
13842 | it through if so. */ | |
df58fc94 | 13843 | if (irel->r_offset >= 2 |
2309ddf2 | 13844 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 13845 | && !(irel->r_offset >= 4 |
80cab405 MR |
13846 | && (bzc = check_relocated_bzc (abfd, |
13847 | ptr - 4, irel->r_offset - 4, | |
13848 | internal_relocs, irelend)))) | |
df58fc94 RS |
13849 | continue; |
13850 | if (irel->r_offset >= 4 | |
80cab405 | 13851 | && !bzc |
2309ddf2 | 13852 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
13853 | continue; |
13854 | ||
13855 | reg = OP32_SREG (opcode); | |
13856 | ||
13857 | /* We only relax adjacent instructions or ones separated with | |
13858 | a branch or jump that has a delay slot. The branch or jump | |
13859 | must not fiddle with the register used to hold the address. | |
13860 | Subtract 4 for the LUI itself. */ | |
13861 | offset = irel[1].r_offset - irel[0].r_offset; | |
13862 | switch (offset - 4) | |
13863 | { | |
13864 | case 0: | |
13865 | break; | |
13866 | case 2: | |
2309ddf2 | 13867 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
13868 | break; |
13869 | continue; | |
13870 | case 4: | |
2309ddf2 | 13871 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
13872 | break; |
13873 | continue; | |
13874 | default: | |
13875 | continue; | |
13876 | } | |
13877 | ||
d21911ea | 13878 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
13879 | |
13880 | /* Give up unless the same register is used with both | |
13881 | relocations. */ | |
13882 | if (OP32_SREG (nextopc) != reg) | |
13883 | continue; | |
13884 | ||
13885 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
13886 | and rounding up to take masking of the two LSBs into account. */ | |
13887 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
13888 | ||
13889 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
13890 | if (IS_BITSIZE (symval, 16)) | |
13891 | { | |
13892 | /* Fix the relocation's type. */ | |
13893 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
13894 | ||
13895 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
07d6d2b8 AM |
13896 | source register in bits 20:16. This register becomes $0 |
13897 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
df58fc94 RS |
13898 | nextopc &= ~0x001f0000; |
13899 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
13900 | contents + irel[1].r_offset); | |
13901 | } | |
13902 | ||
13903 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
13904 | We add 4 to take LUI deletion into account while checking | |
13905 | the PC-relative distance. */ | |
13906 | else if (symval % 4 == 0 | |
13907 | && IS_BITSIZE (pcrval + 4, 25) | |
13908 | && MATCH (nextopc, addiu_insn) | |
13909 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
13910 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
13911 | { | |
13912 | /* Fix the relocation's type. */ | |
13913 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
13914 | ||
13915 | /* Replace ADDIU with the ADDIUPC version. */ | |
13916 | nextopc = (addiupc_insn.match | |
13917 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
13918 | ||
d21911ea MR |
13919 | bfd_put_micromips_32 (abfd, nextopc, |
13920 | contents + irel[1].r_offset); | |
df58fc94 RS |
13921 | } |
13922 | ||
13923 | /* Can't do anything, give up, sigh... */ | |
13924 | else | |
13925 | continue; | |
13926 | ||
13927 | /* Fix the relocation's type. */ | |
13928 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
13929 | ||
13930 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
13931 | delcnt = 4; | |
13932 | deloff = 0; | |
13933 | } | |
13934 | ||
13935 | /* Compact branch relaxation -- due to the multitude of macros | |
07d6d2b8 AM |
13936 | employed by the compiler/assembler, compact branches are not |
13937 | always generated. Obviously, this can/will be fixed elsewhere, | |
13938 | but there is no drawback in double checking it here. */ | |
df58fc94 RS |
13939 | else if (r_type == R_MICROMIPS_PC16_S1 |
13940 | && irel->r_offset + 5 < sec->size | |
13941 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
13942 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
833794fc MR |
13943 | && ((!insn32 |
13944 | && (delcnt = MATCH (bfd_get_16 (abfd, ptr + 4), | |
13945 | nop_insn_16) ? 2 : 0)) | |
13946 | || (irel->r_offset + 7 < sec->size | |
13947 | && (delcnt = MATCH (bfd_get_micromips_32 (abfd, | |
13948 | ptr + 4), | |
13949 | nop_insn_32) ? 4 : 0)))) | |
df58fc94 RS |
13950 | { |
13951 | unsigned long reg; | |
13952 | ||
13953 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
13954 | ||
13955 | /* Replace BEQZ/BNEZ with the compact version. */ | |
13956 | opcode = (bzc_insns_32[fndopc].match | |
13957 | | BZC32_REG_FIELD (reg) | |
13958 | | (opcode & 0xffff)); /* Addend value. */ | |
13959 | ||
d21911ea | 13960 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 | 13961 | |
833794fc MR |
13962 | /* Delete the delay slot NOP: two or four bytes from |
13963 | irel->offset + 4; delcnt has already been set above. */ | |
df58fc94 RS |
13964 | deloff = 4; |
13965 | } | |
13966 | ||
13967 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
07d6d2b8 | 13968 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
13969 | else if (!insn32 |
13970 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
13971 | && IS_BITSIZE (pcrval - 2, 11) |
13972 | && find_match (opcode, b_insns_32) >= 0) | |
13973 | { | |
13974 | /* Fix the relocation's type. */ | |
13975 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
13976 | ||
a8685210 | 13977 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
13978 | bfd_put_16 (abfd, |
13979 | (b_insn_16.match | |
13980 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 13981 | ptr); |
df58fc94 RS |
13982 | |
13983 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
13984 | delcnt = 2; | |
13985 | deloff = 2; | |
13986 | } | |
13987 | ||
13988 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
07d6d2b8 | 13989 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
13990 | else if (!insn32 |
13991 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
13992 | && IS_BITSIZE (pcrval - 2, 8) |
13993 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
13994 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
13995 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
13996 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
13997 | { | |
13998 | unsigned long reg; | |
13999 | ||
14000 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
14001 | ||
14002 | /* Fix the relocation's type. */ | |
14003 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
14004 | ||
a8685210 | 14005 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
14006 | bfd_put_16 (abfd, |
14007 | (bz_insns_16[fndopc].match | |
14008 | | BZ16_REG_FIELD (reg) | |
14009 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 14010 | ptr); |
df58fc94 RS |
14011 | |
14012 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
14013 | delcnt = 2; | |
14014 | deloff = 2; | |
14015 | } | |
14016 | ||
14017 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
833794fc MR |
14018 | else if (!insn32 |
14019 | && r_type == R_MICROMIPS_26_S1 | |
df58fc94 RS |
14020 | && target_is_micromips_code_p |
14021 | && irel->r_offset + 7 < sec->size | |
14022 | && MATCH (opcode, jal_insn_32_bd32)) | |
14023 | { | |
14024 | unsigned long n32opc; | |
14025 | bfd_boolean relaxed = FALSE; | |
14026 | ||
d21911ea | 14027 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
14028 | |
14029 | if (MATCH (n32opc, nop_insn_32)) | |
14030 | { | |
14031 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 14032 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 RS |
14033 | |
14034 | relaxed = TRUE; | |
14035 | } | |
14036 | else if (find_match (n32opc, move_insns_32) >= 0) | |
14037 | { | |
14038 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
14039 | bfd_put_16 (abfd, | |
14040 | (move_insn_16.match | |
14041 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
14042 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 14043 | ptr + 4); |
df58fc94 RS |
14044 | |
14045 | relaxed = TRUE; | |
14046 | } | |
14047 | /* Other 32-bit instructions relaxable to 16-bit | |
14048 | instructions will be handled here later. */ | |
14049 | ||
14050 | if (relaxed) | |
14051 | { | |
14052 | /* JAL with 32-bit delay slot that is changed to a JALS | |
07d6d2b8 | 14053 | with 16-bit delay slot. */ |
d21911ea | 14054 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
14055 | |
14056 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
14057 | delcnt = 2; | |
14058 | deloff = 6; | |
14059 | } | |
14060 | } | |
14061 | ||
14062 | if (delcnt != 0) | |
14063 | { | |
14064 | /* Note that we've changed the relocs, section contents, etc. */ | |
14065 | elf_section_data (sec)->relocs = internal_relocs; | |
14066 | elf_section_data (sec)->this_hdr.contents = contents; | |
14067 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
14068 | ||
14069 | /* Delete bytes depending on the delcnt and deloff. */ | |
14070 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
14071 | irel->r_offset + deloff, delcnt)) | |
14072 | goto error_return; | |
14073 | ||
14074 | /* That will change things, so we should relax again. | |
14075 | Note that this is not required, and it may be slow. */ | |
14076 | *again = TRUE; | |
14077 | } | |
14078 | } | |
14079 | ||
14080 | if (isymbuf != NULL | |
14081 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
14082 | { | |
14083 | if (! link_info->keep_memory) | |
14084 | free (isymbuf); | |
14085 | else | |
14086 | { | |
14087 | /* Cache the symbols for elf_link_input_bfd. */ | |
14088 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
14089 | } | |
14090 | } | |
14091 | ||
14092 | if (contents != NULL | |
14093 | && elf_section_data (sec)->this_hdr.contents != contents) | |
14094 | { | |
14095 | if (! link_info->keep_memory) | |
14096 | free (contents); | |
14097 | else | |
14098 | { | |
14099 | /* Cache the section contents for elf_link_input_bfd. */ | |
14100 | elf_section_data (sec)->this_hdr.contents = contents; | |
14101 | } | |
14102 | } | |
14103 | ||
14104 | if (internal_relocs != NULL | |
14105 | && elf_section_data (sec)->relocs != internal_relocs) | |
14106 | free (internal_relocs); | |
14107 | ||
14108 | return TRUE; | |
14109 | ||
14110 | error_return: | |
14111 | if (isymbuf != NULL | |
14112 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
14113 | free (isymbuf); | |
14114 | if (contents != NULL | |
14115 | && elf_section_data (sec)->this_hdr.contents != contents) | |
14116 | free (contents); | |
14117 | if (internal_relocs != NULL | |
14118 | && elf_section_data (sec)->relocs != internal_relocs) | |
14119 | free (internal_relocs); | |
14120 | ||
14121 | return FALSE; | |
14122 | } | |
14123 | \f | |
b49e97c9 TS |
14124 | /* Create a MIPS ELF linker hash table. */ |
14125 | ||
14126 | struct bfd_link_hash_table * | |
9719ad41 | 14127 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
14128 | { |
14129 | struct mips_elf_link_hash_table *ret; | |
14130 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
14131 | ||
7bf52ea2 | 14132 | ret = bfd_zmalloc (amt); |
9719ad41 | 14133 | if (ret == NULL) |
b49e97c9 TS |
14134 | return NULL; |
14135 | ||
66eb6687 AM |
14136 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
14137 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
14138 | sizeof (struct mips_elf_link_hash_entry), |
14139 | MIPS_ELF_DATA)) | |
b49e97c9 | 14140 | { |
e2d34d7d | 14141 | free (ret); |
b49e97c9 TS |
14142 | return NULL; |
14143 | } | |
1bbce132 MR |
14144 | ret->root.init_plt_refcount.plist = NULL; |
14145 | ret->root.init_plt_offset.plist = NULL; | |
b49e97c9 | 14146 | |
b49e97c9 TS |
14147 | return &ret->root.root; |
14148 | } | |
0a44bf69 RS |
14149 | |
14150 | /* Likewise, but indicate that the target is VxWorks. */ | |
14151 | ||
14152 | struct bfd_link_hash_table * | |
14153 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
14154 | { | |
14155 | struct bfd_link_hash_table *ret; | |
14156 | ||
14157 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
14158 | if (ret) | |
14159 | { | |
14160 | struct mips_elf_link_hash_table *htab; | |
14161 | ||
14162 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
14163 | htab->use_plts_and_copy_relocs = TRUE; |
14164 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
14165 | } |
14166 | return ret; | |
14167 | } | |
861fb55a DJ |
14168 | |
14169 | /* A function that the linker calls if we are allowed to use PLTs | |
14170 | and copy relocs. */ | |
14171 | ||
14172 | void | |
14173 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
14174 | { | |
14175 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
14176 | } | |
833794fc MR |
14177 | |
14178 | /* A function that the linker calls to select between all or only | |
8b10b0b3 | 14179 | 32-bit microMIPS instructions, and between making or ignoring |
47275900 MR |
14180 | branch relocation checks for invalid transitions between ISA modes. |
14181 | Also record whether we have been configured for a GNU target. */ | |
833794fc MR |
14182 | |
14183 | void | |
8b10b0b3 | 14184 | _bfd_mips_elf_linker_flags (struct bfd_link_info *info, bfd_boolean insn32, |
47275900 MR |
14185 | bfd_boolean ignore_branch_isa, |
14186 | bfd_boolean gnu_target) | |
833794fc | 14187 | { |
8b10b0b3 MR |
14188 | mips_elf_hash_table (info)->insn32 = insn32; |
14189 | mips_elf_hash_table (info)->ignore_branch_isa = ignore_branch_isa; | |
47275900 | 14190 | mips_elf_hash_table (info)->gnu_target = gnu_target; |
833794fc | 14191 | } |
b49e97c9 | 14192 | \f |
c97c330b MF |
14193 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
14194 | ||
14195 | struct mips_mach_extension | |
14196 | { | |
14197 | unsigned long extension, base; | |
14198 | }; | |
14199 | ||
14200 | ||
14201 | /* An array describing how BFD machines relate to one another. The entries | |
14202 | are ordered topologically with MIPS I extensions listed last. */ | |
14203 | ||
14204 | static const struct mips_mach_extension mips_mach_extensions[] = | |
14205 | { | |
14206 | /* MIPS64r2 extensions. */ | |
14207 | { bfd_mach_mips_octeon3, bfd_mach_mips_octeon2 }, | |
14208 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, | |
14209 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, | |
14210 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
9108bc33 | 14211 | { bfd_mach_mips_gs264e, bfd_mach_mips_gs464e }, |
bd782c07 | 14212 | { bfd_mach_mips_gs464e, bfd_mach_mips_gs464 }, |
ac8cb70f | 14213 | { bfd_mach_mips_gs464, bfd_mach_mipsisa64r2 }, |
c97c330b MF |
14214 | |
14215 | /* MIPS64 extensions. */ | |
14216 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, | |
14217 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, | |
14218 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, | |
14219 | ||
14220 | /* MIPS V extensions. */ | |
14221 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
14222 | ||
14223 | /* R10000 extensions. */ | |
14224 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
14225 | { bfd_mach_mips14000, bfd_mach_mips10000 }, | |
14226 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
14227 | ||
14228 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
14229 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
14230 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
14231 | many libraries will just use the core ISA. Perhaps we could add | |
14232 | some sort of ASE flag if this ever proves a problem. */ | |
14233 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
14234 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
14235 | ||
14236 | /* MIPS IV extensions. */ | |
14237 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
14238 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
14239 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
14240 | { bfd_mach_mips7000, bfd_mach_mips8000 }, | |
14241 | { bfd_mach_mips9000, bfd_mach_mips8000 }, | |
14242 | ||
14243 | /* VR4100 extensions. */ | |
14244 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
14245 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
14246 | ||
14247 | /* MIPS III extensions. */ | |
14248 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, | |
14249 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
14250 | { bfd_mach_mips8000, bfd_mach_mips4000 }, | |
14251 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
14252 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
14253 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
14254 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
14255 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
c97c330b MF |
14256 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
14257 | ||
38bf472a MR |
14258 | /* MIPS32r3 extensions. */ |
14259 | { bfd_mach_mips_interaptiv_mr2, bfd_mach_mipsisa32r3 }, | |
14260 | ||
14261 | /* MIPS32r2 extensions. */ | |
14262 | { bfd_mach_mipsisa32r3, bfd_mach_mipsisa32r2 }, | |
14263 | ||
c97c330b MF |
14264 | /* MIPS32 extensions. */ |
14265 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
14266 | ||
14267 | /* MIPS II extensions. */ | |
14268 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
14269 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
b417536f | 14270 | { bfd_mach_mips4010, bfd_mach_mips6000 }, |
c97c330b MF |
14271 | |
14272 | /* MIPS I extensions. */ | |
14273 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
14274 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
14275 | }; | |
14276 | ||
14277 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
14278 | ||
14279 | static bfd_boolean | |
14280 | mips_mach_extends_p (unsigned long base, unsigned long extension) | |
14281 | { | |
14282 | size_t i; | |
14283 | ||
14284 | if (extension == base) | |
14285 | return TRUE; | |
14286 | ||
14287 | if (base == bfd_mach_mipsisa32 | |
14288 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
14289 | return TRUE; | |
14290 | ||
14291 | if (base == bfd_mach_mipsisa32r2 | |
14292 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
14293 | return TRUE; | |
14294 | ||
14295 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
14296 | if (extension == mips_mach_extensions[i].extension) | |
14297 | { | |
14298 | extension = mips_mach_extensions[i].base; | |
14299 | if (extension == base) | |
14300 | return TRUE; | |
14301 | } | |
14302 | ||
14303 | return FALSE; | |
14304 | } | |
14305 | ||
14306 | /* Return the BFD mach for each .MIPS.abiflags ISA Extension. */ | |
14307 | ||
14308 | static unsigned long | |
14309 | bfd_mips_isa_ext_mach (unsigned int isa_ext) | |
14310 | { | |
14311 | switch (isa_ext) | |
14312 | { | |
07d6d2b8 AM |
14313 | case AFL_EXT_3900: return bfd_mach_mips3900; |
14314 | case AFL_EXT_4010: return bfd_mach_mips4010; | |
14315 | case AFL_EXT_4100: return bfd_mach_mips4100; | |
14316 | case AFL_EXT_4111: return bfd_mach_mips4111; | |
14317 | case AFL_EXT_4120: return bfd_mach_mips4120; | |
14318 | case AFL_EXT_4650: return bfd_mach_mips4650; | |
14319 | case AFL_EXT_5400: return bfd_mach_mips5400; | |
14320 | case AFL_EXT_5500: return bfd_mach_mips5500; | |
14321 | case AFL_EXT_5900: return bfd_mach_mips5900; | |
14322 | case AFL_EXT_10000: return bfd_mach_mips10000; | |
c97c330b MF |
14323 | case AFL_EXT_LOONGSON_2E: return bfd_mach_mips_loongson_2e; |
14324 | case AFL_EXT_LOONGSON_2F: return bfd_mach_mips_loongson_2f; | |
07d6d2b8 | 14325 | case AFL_EXT_SB1: return bfd_mach_mips_sb1; |
c97c330b MF |
14326 | case AFL_EXT_OCTEON: return bfd_mach_mips_octeon; |
14327 | case AFL_EXT_OCTEONP: return bfd_mach_mips_octeonp; | |
14328 | case AFL_EXT_OCTEON2: return bfd_mach_mips_octeon2; | |
07d6d2b8 AM |
14329 | case AFL_EXT_XLR: return bfd_mach_mips_xlr; |
14330 | default: return bfd_mach_mips3000; | |
c97c330b MF |
14331 | } |
14332 | } | |
14333 | ||
351cdf24 MF |
14334 | /* Return the .MIPS.abiflags value representing each ISA Extension. */ |
14335 | ||
14336 | unsigned int | |
14337 | bfd_mips_isa_ext (bfd *abfd) | |
14338 | { | |
14339 | switch (bfd_get_mach (abfd)) | |
14340 | { | |
07d6d2b8 AM |
14341 | case bfd_mach_mips3900: return AFL_EXT_3900; |
14342 | case bfd_mach_mips4010: return AFL_EXT_4010; | |
14343 | case bfd_mach_mips4100: return AFL_EXT_4100; | |
14344 | case bfd_mach_mips4111: return AFL_EXT_4111; | |
14345 | case bfd_mach_mips4120: return AFL_EXT_4120; | |
14346 | case bfd_mach_mips4650: return AFL_EXT_4650; | |
14347 | case bfd_mach_mips5400: return AFL_EXT_5400; | |
14348 | case bfd_mach_mips5500: return AFL_EXT_5500; | |
14349 | case bfd_mach_mips5900: return AFL_EXT_5900; | |
14350 | case bfd_mach_mips10000: return AFL_EXT_10000; | |
c97c330b MF |
14351 | case bfd_mach_mips_loongson_2e: return AFL_EXT_LOONGSON_2E; |
14352 | case bfd_mach_mips_loongson_2f: return AFL_EXT_LOONGSON_2F; | |
07d6d2b8 AM |
14353 | case bfd_mach_mips_sb1: return AFL_EXT_SB1; |
14354 | case bfd_mach_mips_octeon: return AFL_EXT_OCTEON; | |
14355 | case bfd_mach_mips_octeonp: return AFL_EXT_OCTEONP; | |
14356 | case bfd_mach_mips_octeon3: return AFL_EXT_OCTEON3; | |
14357 | case bfd_mach_mips_octeon2: return AFL_EXT_OCTEON2; | |
14358 | case bfd_mach_mips_xlr: return AFL_EXT_XLR; | |
38bf472a MR |
14359 | case bfd_mach_mips_interaptiv_mr2: |
14360 | return AFL_EXT_INTERAPTIV_MR2; | |
07d6d2b8 | 14361 | default: return 0; |
c97c330b MF |
14362 | } |
14363 | } | |
14364 | ||
14365 | /* Encode ISA level and revision as a single value. */ | |
14366 | #define LEVEL_REV(LEV,REV) ((LEV) << 3 | (REV)) | |
14367 | ||
14368 | /* Decode a single value into level and revision. */ | |
14369 | #define ISA_LEVEL(LEVREV) ((LEVREV) >> 3) | |
14370 | #define ISA_REV(LEVREV) ((LEVREV) & 0x7) | |
351cdf24 MF |
14371 | |
14372 | /* Update the isa_level, isa_rev, isa_ext fields of abiflags. */ | |
14373 | ||
14374 | static void | |
14375 | update_mips_abiflags_isa (bfd *abfd, Elf_Internal_ABIFlags_v0 *abiflags) | |
14376 | { | |
c97c330b | 14377 | int new_isa = 0; |
351cdf24 MF |
14378 | switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) |
14379 | { | |
c97c330b MF |
14380 | case E_MIPS_ARCH_1: new_isa = LEVEL_REV (1, 0); break; |
14381 | case E_MIPS_ARCH_2: new_isa = LEVEL_REV (2, 0); break; | |
14382 | case E_MIPS_ARCH_3: new_isa = LEVEL_REV (3, 0); break; | |
14383 | case E_MIPS_ARCH_4: new_isa = LEVEL_REV (4, 0); break; | |
14384 | case E_MIPS_ARCH_5: new_isa = LEVEL_REV (5, 0); break; | |
14385 | case E_MIPS_ARCH_32: new_isa = LEVEL_REV (32, 1); break; | |
14386 | case E_MIPS_ARCH_32R2: new_isa = LEVEL_REV (32, 2); break; | |
14387 | case E_MIPS_ARCH_32R6: new_isa = LEVEL_REV (32, 6); break; | |
14388 | case E_MIPS_ARCH_64: new_isa = LEVEL_REV (64, 1); break; | |
14389 | case E_MIPS_ARCH_64R2: new_isa = LEVEL_REV (64, 2); break; | |
14390 | case E_MIPS_ARCH_64R6: new_isa = LEVEL_REV (64, 6); break; | |
351cdf24 | 14391 | default: |
4eca0228 | 14392 | _bfd_error_handler |
695344c0 | 14393 | /* xgettext:c-format */ |
2c1c9679 | 14394 | (_("%pB: unknown architecture %s"), |
351cdf24 MF |
14395 | abfd, bfd_printable_name (abfd)); |
14396 | } | |
14397 | ||
c97c330b MF |
14398 | if (new_isa > LEVEL_REV (abiflags->isa_level, abiflags->isa_rev)) |
14399 | { | |
14400 | abiflags->isa_level = ISA_LEVEL (new_isa); | |
14401 | abiflags->isa_rev = ISA_REV (new_isa); | |
14402 | } | |
14403 | ||
14404 | /* Update the isa_ext if ABFD describes a further extension. */ | |
14405 | if (mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags->isa_ext), | |
14406 | bfd_get_mach (abfd))) | |
14407 | abiflags->isa_ext = bfd_mips_isa_ext (abfd); | |
351cdf24 MF |
14408 | } |
14409 | ||
14410 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
14411 | ||
14412 | static bfd_boolean | |
14413 | mips_32bit_flags_p (flagword flags) | |
14414 | { | |
14415 | return ((flags & EF_MIPS_32BITMODE) != 0 | |
14416 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
14417 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
14418 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
14419 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
14420 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
7361da2c AB |
14421 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2 |
14422 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6); | |
351cdf24 MF |
14423 | } |
14424 | ||
14425 | /* Infer the content of the ABI flags based on the elf header. */ | |
14426 | ||
14427 | static void | |
14428 | infer_mips_abiflags (bfd *abfd, Elf_Internal_ABIFlags_v0* abiflags) | |
14429 | { | |
14430 | obj_attribute *in_attr; | |
14431 | ||
14432 | memset (abiflags, 0, sizeof (Elf_Internal_ABIFlags_v0)); | |
14433 | update_mips_abiflags_isa (abfd, abiflags); | |
14434 | ||
14435 | if (mips_32bit_flags_p (elf_elfheader (abfd)->e_flags)) | |
14436 | abiflags->gpr_size = AFL_REG_32; | |
14437 | else | |
14438 | abiflags->gpr_size = AFL_REG_64; | |
14439 | ||
14440 | abiflags->cpr1_size = AFL_REG_NONE; | |
14441 | ||
14442 | in_attr = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU]; | |
14443 | abiflags->fp_abi = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
14444 | ||
14445 | if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_SINGLE | |
14446 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_XX | |
14447 | || (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14448 | && abiflags->gpr_size == AFL_REG_32)) | |
14449 | abiflags->cpr1_size = AFL_REG_32; | |
14450 | else if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14451 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64 | |
14452 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
14453 | abiflags->cpr1_size = AFL_REG_64; | |
14454 | ||
14455 | abiflags->cpr2_size = AFL_REG_NONE; | |
14456 | ||
14457 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) | |
14458 | abiflags->ases |= AFL_ASE_MDMX; | |
14459 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
14460 | abiflags->ases |= AFL_ASE_MIPS16; | |
14461 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) | |
14462 | abiflags->ases |= AFL_ASE_MICROMIPS; | |
14463 | ||
14464 | if (abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
14465 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_SOFT | |
14466 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_64A | |
14467 | && abiflags->isa_level >= 32 | |
bdc6c06e | 14468 | && abiflags->ases != AFL_ASE_LOONGSON_EXT) |
351cdf24 MF |
14469 | abiflags->flags1 |= AFL_FLAGS1_ODDSPREG; |
14470 | } | |
14471 | ||
b49e97c9 TS |
14472 | /* We need to use a special link routine to handle the .reginfo and |
14473 | the .mdebug sections. We need to merge all instances of these | |
14474 | sections together, not write them all out sequentially. */ | |
14475 | ||
b34976b6 | 14476 | bfd_boolean |
9719ad41 | 14477 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 14478 | { |
b49e97c9 TS |
14479 | asection *o; |
14480 | struct bfd_link_order *p; | |
14481 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
351cdf24 | 14482 | asection *rtproc_sec, *abiflags_sec; |
b49e97c9 TS |
14483 | Elf32_RegInfo reginfo; |
14484 | struct ecoff_debug_info debug; | |
861fb55a | 14485 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
14486 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
14487 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 14488 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 14489 | void *mdebug_handle = NULL; |
b49e97c9 TS |
14490 | asection *s; |
14491 | EXTR esym; | |
14492 | unsigned int i; | |
14493 | bfd_size_type amt; | |
0a44bf69 | 14494 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
14495 | |
14496 | static const char * const secname[] = | |
14497 | { | |
14498 | ".text", ".init", ".fini", ".data", | |
14499 | ".rodata", ".sdata", ".sbss", ".bss" | |
14500 | }; | |
14501 | static const int sc[] = | |
14502 | { | |
14503 | scText, scInit, scFini, scData, | |
14504 | scRData, scSData, scSBss, scBss | |
14505 | }; | |
14506 | ||
0a44bf69 | 14507 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
14508 | BFD_ASSERT (htab != NULL); |
14509 | ||
64575f78 MR |
14510 | /* Sort the dynamic symbols so that those with GOT entries come after |
14511 | those without. */ | |
d4596a51 RS |
14512 | if (!mips_elf_sort_hash_table (abfd, info)) |
14513 | return FALSE; | |
b49e97c9 | 14514 | |
861fb55a DJ |
14515 | /* Create any scheduled LA25 stubs. */ |
14516 | hti.info = info; | |
14517 | hti.output_bfd = abfd; | |
14518 | hti.error = FALSE; | |
14519 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
14520 | if (hti.error) | |
14521 | return FALSE; | |
14522 | ||
b49e97c9 TS |
14523 | /* Get a value for the GP register. */ |
14524 | if (elf_gp (abfd) == 0) | |
14525 | { | |
14526 | struct bfd_link_hash_entry *h; | |
14527 | ||
b34976b6 | 14528 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 14529 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
14530 | elf_gp (abfd) = (h->u.def.value |
14531 | + h->u.def.section->output_section->vma | |
14532 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
14533 | else if (htab->is_vxworks |
14534 | && (h = bfd_link_hash_lookup (info->hash, | |
14535 | "_GLOBAL_OFFSET_TABLE_", | |
14536 | FALSE, FALSE, TRUE)) | |
14537 | && h->type == bfd_link_hash_defined) | |
14538 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
14539 | + h->u.def.section->output_offset | |
14540 | + h->u.def.value); | |
0e1862bb | 14541 | else if (bfd_link_relocatable (info)) |
b49e97c9 TS |
14542 | { |
14543 | bfd_vma lo = MINUS_ONE; | |
14544 | ||
14545 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 14546 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
14547 | if (o->vma < lo |
14548 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
14549 | lo = o->vma; | |
14550 | ||
14551 | /* And calculate GP relative to that. */ | |
0a44bf69 | 14552 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
14553 | } |
14554 | else | |
14555 | { | |
14556 | /* If the relocate_section function needs to do a reloc | |
14557 | involving the GP value, it should make a reloc_dangerous | |
14558 | callback to warn that GP is not defined. */ | |
14559 | } | |
14560 | } | |
14561 | ||
14562 | /* Go through the sections and collect the .reginfo and .mdebug | |
14563 | information. */ | |
351cdf24 | 14564 | abiflags_sec = NULL; |
b49e97c9 TS |
14565 | reginfo_sec = NULL; |
14566 | mdebug_sec = NULL; | |
14567 | gptab_data_sec = NULL; | |
14568 | gptab_bss_sec = NULL; | |
9719ad41 | 14569 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 | 14570 | { |
351cdf24 MF |
14571 | if (strcmp (o->name, ".MIPS.abiflags") == 0) |
14572 | { | |
14573 | /* We have found the .MIPS.abiflags section in the output file. | |
14574 | Look through all the link_orders comprising it and remove them. | |
14575 | The data is merged in _bfd_mips_elf_merge_private_bfd_data. */ | |
14576 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
14577 | { | |
14578 | asection *input_section; | |
14579 | ||
14580 | if (p->type != bfd_indirect_link_order) | |
14581 | { | |
14582 | if (p->type == bfd_data_link_order) | |
14583 | continue; | |
14584 | abort (); | |
14585 | } | |
14586 | ||
14587 | input_section = p->u.indirect.section; | |
14588 | ||
14589 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14590 | elf_link_input_bfd ignores this section. */ | |
14591 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14592 | } | |
14593 | ||
14594 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
14595 | BFD_ASSERT(o->size == sizeof (Elf_External_ABIFlags_v0)); | |
14596 | ||
14597 | /* Skip this section later on (I don't think this currently | |
14598 | matters, but someday it might). */ | |
14599 | o->map_head.link_order = NULL; | |
14600 | ||
14601 | abiflags_sec = o; | |
14602 | } | |
14603 | ||
b49e97c9 TS |
14604 | if (strcmp (o->name, ".reginfo") == 0) |
14605 | { | |
14606 | memset (®info, 0, sizeof reginfo); | |
14607 | ||
14608 | /* We have found the .reginfo section in the output file. | |
14609 | Look through all the link_orders comprising it and merge | |
14610 | the information together. */ | |
8423293d | 14611 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14612 | { |
14613 | asection *input_section; | |
14614 | bfd *input_bfd; | |
14615 | Elf32_External_RegInfo ext; | |
14616 | Elf32_RegInfo sub; | |
6798f8bf | 14617 | bfd_size_type sz; |
b49e97c9 TS |
14618 | |
14619 | if (p->type != bfd_indirect_link_order) | |
14620 | { | |
14621 | if (p->type == bfd_data_link_order) | |
14622 | continue; | |
14623 | abort (); | |
14624 | } | |
14625 | ||
14626 | input_section = p->u.indirect.section; | |
14627 | input_bfd = input_section->owner; | |
14628 | ||
6798f8bf MR |
14629 | sz = (input_section->size < sizeof (ext) |
14630 | ? input_section->size : sizeof (ext)); | |
14631 | memset (&ext, 0, sizeof (ext)); | |
b49e97c9 | 14632 | if (! bfd_get_section_contents (input_bfd, input_section, |
6798f8bf | 14633 | &ext, 0, sz)) |
b34976b6 | 14634 | return FALSE; |
b49e97c9 TS |
14635 | |
14636 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
14637 | ||
14638 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
14639 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
14640 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
14641 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
14642 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
14643 | ||
14644 | /* ri_gp_value is set by the function | |
1c5e4ee9 | 14645 | `_bfd_mips_elf_section_processing' when the section is |
b49e97c9 TS |
14646 | finally written out. */ |
14647 | ||
14648 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14649 | elf_link_input_bfd ignores this section. */ | |
14650 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14651 | } | |
14652 | ||
14653 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
b248d650 | 14654 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
14655 | |
14656 | /* Skip this section later on (I don't think this currently | |
14657 | matters, but someday it might). */ | |
8423293d | 14658 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14659 | |
14660 | reginfo_sec = o; | |
14661 | } | |
14662 | ||
14663 | if (strcmp (o->name, ".mdebug") == 0) | |
14664 | { | |
14665 | struct extsym_info einfo; | |
14666 | bfd_vma last; | |
14667 | ||
14668 | /* We have found the .mdebug section in the output file. | |
14669 | Look through all the link_orders comprising it and merge | |
14670 | the information together. */ | |
14671 | symhdr->magic = swap->sym_magic; | |
14672 | /* FIXME: What should the version stamp be? */ | |
14673 | symhdr->vstamp = 0; | |
14674 | symhdr->ilineMax = 0; | |
14675 | symhdr->cbLine = 0; | |
14676 | symhdr->idnMax = 0; | |
14677 | symhdr->ipdMax = 0; | |
14678 | symhdr->isymMax = 0; | |
14679 | symhdr->ioptMax = 0; | |
14680 | symhdr->iauxMax = 0; | |
14681 | symhdr->issMax = 0; | |
14682 | symhdr->issExtMax = 0; | |
14683 | symhdr->ifdMax = 0; | |
14684 | symhdr->crfd = 0; | |
14685 | symhdr->iextMax = 0; | |
14686 | ||
14687 | /* We accumulate the debugging information itself in the | |
14688 | debug_info structure. */ | |
14689 | debug.line = NULL; | |
14690 | debug.external_dnr = NULL; | |
14691 | debug.external_pdr = NULL; | |
14692 | debug.external_sym = NULL; | |
14693 | debug.external_opt = NULL; | |
14694 | debug.external_aux = NULL; | |
14695 | debug.ss = NULL; | |
14696 | debug.ssext = debug.ssext_end = NULL; | |
14697 | debug.external_fdr = NULL; | |
14698 | debug.external_rfd = NULL; | |
14699 | debug.external_ext = debug.external_ext_end = NULL; | |
14700 | ||
14701 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 14702 | if (mdebug_handle == NULL) |
b34976b6 | 14703 | return FALSE; |
b49e97c9 TS |
14704 | |
14705 | esym.jmptbl = 0; | |
14706 | esym.cobol_main = 0; | |
14707 | esym.weakext = 0; | |
14708 | esym.reserved = 0; | |
14709 | esym.ifd = ifdNil; | |
14710 | esym.asym.iss = issNil; | |
14711 | esym.asym.st = stLocal; | |
14712 | esym.asym.reserved = 0; | |
14713 | esym.asym.index = indexNil; | |
14714 | last = 0; | |
14715 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
14716 | { | |
14717 | esym.asym.sc = sc[i]; | |
14718 | s = bfd_get_section_by_name (abfd, secname[i]); | |
14719 | if (s != NULL) | |
14720 | { | |
14721 | esym.asym.value = s->vma; | |
eea6121a | 14722 | last = s->vma + s->size; |
b49e97c9 TS |
14723 | } |
14724 | else | |
14725 | esym.asym.value = last; | |
14726 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
14727 | secname[i], &esym)) | |
b34976b6 | 14728 | return FALSE; |
b49e97c9 TS |
14729 | } |
14730 | ||
8423293d | 14731 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14732 | { |
14733 | asection *input_section; | |
14734 | bfd *input_bfd; | |
14735 | const struct ecoff_debug_swap *input_swap; | |
14736 | struct ecoff_debug_info input_debug; | |
14737 | char *eraw_src; | |
14738 | char *eraw_end; | |
14739 | ||
14740 | if (p->type != bfd_indirect_link_order) | |
14741 | { | |
14742 | if (p->type == bfd_data_link_order) | |
14743 | continue; | |
14744 | abort (); | |
14745 | } | |
14746 | ||
14747 | input_section = p->u.indirect.section; | |
14748 | input_bfd = input_section->owner; | |
14749 | ||
d5eaccd7 | 14750 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
14751 | { |
14752 | /* I don't know what a non MIPS ELF bfd would be | |
14753 | doing with a .mdebug section, but I don't really | |
14754 | want to deal with it. */ | |
14755 | continue; | |
14756 | } | |
14757 | ||
14758 | input_swap = (get_elf_backend_data (input_bfd) | |
14759 | ->elf_backend_ecoff_debug_swap); | |
14760 | ||
eea6121a | 14761 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
14762 | |
14763 | /* The ECOFF linking code expects that we have already | |
14764 | read in the debugging information and set up an | |
14765 | ecoff_debug_info structure, so we do that now. */ | |
14766 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
14767 | &input_debug)) | |
b34976b6 | 14768 | return FALSE; |
b49e97c9 TS |
14769 | |
14770 | if (! (bfd_ecoff_debug_accumulate | |
14771 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
14772 | &input_debug, input_swap, info))) | |
b34976b6 | 14773 | return FALSE; |
b49e97c9 TS |
14774 | |
14775 | /* Loop through the external symbols. For each one with | |
14776 | interesting information, try to find the symbol in | |
14777 | the linker global hash table and save the information | |
14778 | for the output external symbols. */ | |
14779 | eraw_src = input_debug.external_ext; | |
14780 | eraw_end = (eraw_src | |
14781 | + (input_debug.symbolic_header.iextMax | |
14782 | * input_swap->external_ext_size)); | |
14783 | for (; | |
14784 | eraw_src < eraw_end; | |
14785 | eraw_src += input_swap->external_ext_size) | |
14786 | { | |
14787 | EXTR ext; | |
14788 | const char *name; | |
14789 | struct mips_elf_link_hash_entry *h; | |
14790 | ||
9719ad41 | 14791 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
14792 | if (ext.asym.sc == scNil |
14793 | || ext.asym.sc == scUndefined | |
14794 | || ext.asym.sc == scSUndefined) | |
14795 | continue; | |
14796 | ||
14797 | name = input_debug.ssext + ext.asym.iss; | |
14798 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 14799 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
14800 | if (h == NULL || h->esym.ifd != -2) |
14801 | continue; | |
14802 | ||
14803 | if (ext.ifd != -1) | |
14804 | { | |
14805 | BFD_ASSERT (ext.ifd | |
14806 | < input_debug.symbolic_header.ifdMax); | |
14807 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
14808 | } | |
14809 | ||
14810 | h->esym = ext; | |
14811 | } | |
14812 | ||
14813 | /* Free up the information we just read. */ | |
14814 | free (input_debug.line); | |
14815 | free (input_debug.external_dnr); | |
14816 | free (input_debug.external_pdr); | |
14817 | free (input_debug.external_sym); | |
14818 | free (input_debug.external_opt); | |
14819 | free (input_debug.external_aux); | |
14820 | free (input_debug.ss); | |
14821 | free (input_debug.ssext); | |
14822 | free (input_debug.external_fdr); | |
14823 | free (input_debug.external_rfd); | |
14824 | free (input_debug.external_ext); | |
14825 | ||
14826 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14827 | elf_link_input_bfd ignores this section. */ | |
14828 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14829 | } | |
14830 | ||
0e1862bb | 14831 | if (SGI_COMPAT (abfd) && bfd_link_pic (info)) |
b49e97c9 TS |
14832 | { |
14833 | /* Create .rtproc section. */ | |
87e0a731 | 14834 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
14835 | if (rtproc_sec == NULL) |
14836 | { | |
14837 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
14838 | | SEC_LINKER_CREATED | SEC_READONLY); | |
14839 | ||
87e0a731 AM |
14840 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
14841 | ".rtproc", | |
14842 | flags); | |
b49e97c9 | 14843 | if (rtproc_sec == NULL |
b49e97c9 | 14844 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 14845 | return FALSE; |
b49e97c9 TS |
14846 | } |
14847 | ||
14848 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
14849 | info, rtproc_sec, | |
14850 | &debug)) | |
b34976b6 | 14851 | return FALSE; |
b49e97c9 TS |
14852 | } |
14853 | ||
14854 | /* Build the external symbol information. */ | |
14855 | einfo.abfd = abfd; | |
14856 | einfo.info = info; | |
14857 | einfo.debug = &debug; | |
14858 | einfo.swap = swap; | |
b34976b6 | 14859 | einfo.failed = FALSE; |
b49e97c9 | 14860 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 14861 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 14862 | if (einfo.failed) |
b34976b6 | 14863 | return FALSE; |
b49e97c9 TS |
14864 | |
14865 | /* Set the size of the .mdebug section. */ | |
eea6121a | 14866 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
14867 | |
14868 | /* Skip this section later on (I don't think this currently | |
14869 | matters, but someday it might). */ | |
8423293d | 14870 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14871 | |
14872 | mdebug_sec = o; | |
14873 | } | |
14874 | ||
0112cd26 | 14875 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
14876 | { |
14877 | const char *subname; | |
14878 | unsigned int c; | |
14879 | Elf32_gptab *tab; | |
14880 | Elf32_External_gptab *ext_tab; | |
14881 | unsigned int j; | |
14882 | ||
14883 | /* The .gptab.sdata and .gptab.sbss sections hold | |
14884 | information describing how the small data area would | |
14885 | change depending upon the -G switch. These sections | |
14886 | not used in executables files. */ | |
0e1862bb | 14887 | if (! bfd_link_relocatable (info)) |
b49e97c9 | 14888 | { |
8423293d | 14889 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14890 | { |
14891 | asection *input_section; | |
14892 | ||
14893 | if (p->type != bfd_indirect_link_order) | |
14894 | { | |
14895 | if (p->type == bfd_data_link_order) | |
14896 | continue; | |
14897 | abort (); | |
14898 | } | |
14899 | ||
14900 | input_section = p->u.indirect.section; | |
14901 | ||
14902 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14903 | elf_link_input_bfd ignores this section. */ | |
14904 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14905 | } | |
14906 | ||
14907 | /* Skip this section later on (I don't think this | |
14908 | currently matters, but someday it might). */ | |
8423293d | 14909 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14910 | |
14911 | /* Really remove the section. */ | |
5daa8fe7 | 14912 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
14913 | --abfd->section_count; |
14914 | ||
14915 | continue; | |
14916 | } | |
14917 | ||
14918 | /* There is one gptab for initialized data, and one for | |
14919 | uninitialized data. */ | |
14920 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
14921 | gptab_data_sec = o; | |
14922 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
14923 | gptab_bss_sec = o; | |
14924 | else | |
14925 | { | |
4eca0228 | 14926 | _bfd_error_handler |
695344c0 | 14927 | /* xgettext:c-format */ |
871b3ab2 | 14928 | (_("%pB: illegal section name `%pA'"), abfd, o); |
b49e97c9 | 14929 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 14930 | return FALSE; |
b49e97c9 TS |
14931 | } |
14932 | ||
14933 | /* The linker script always combines .gptab.data and | |
14934 | .gptab.sdata into .gptab.sdata, and likewise for | |
14935 | .gptab.bss and .gptab.sbss. It is possible that there is | |
14936 | no .sdata or .sbss section in the output file, in which | |
14937 | case we must change the name of the output section. */ | |
14938 | subname = o->name + sizeof ".gptab" - 1; | |
14939 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
14940 | { | |
14941 | if (o == gptab_data_sec) | |
14942 | o->name = ".gptab.data"; | |
14943 | else | |
14944 | o->name = ".gptab.bss"; | |
14945 | subname = o->name + sizeof ".gptab" - 1; | |
14946 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
14947 | } | |
14948 | ||
14949 | /* Set up the first entry. */ | |
14950 | c = 1; | |
14951 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 14952 | tab = bfd_malloc (amt); |
b49e97c9 | 14953 | if (tab == NULL) |
b34976b6 | 14954 | return FALSE; |
b49e97c9 TS |
14955 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
14956 | tab[0].gt_header.gt_unused = 0; | |
14957 | ||
14958 | /* Combine the input sections. */ | |
8423293d | 14959 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14960 | { |
14961 | asection *input_section; | |
14962 | bfd *input_bfd; | |
14963 | bfd_size_type size; | |
14964 | unsigned long last; | |
14965 | bfd_size_type gpentry; | |
14966 | ||
14967 | if (p->type != bfd_indirect_link_order) | |
14968 | { | |
14969 | if (p->type == bfd_data_link_order) | |
14970 | continue; | |
14971 | abort (); | |
14972 | } | |
14973 | ||
14974 | input_section = p->u.indirect.section; | |
14975 | input_bfd = input_section->owner; | |
14976 | ||
14977 | /* Combine the gptab entries for this input section one | |
14978 | by one. We know that the input gptab entries are | |
14979 | sorted by ascending -G value. */ | |
eea6121a | 14980 | size = input_section->size; |
b49e97c9 TS |
14981 | last = 0; |
14982 | for (gpentry = sizeof (Elf32_External_gptab); | |
14983 | gpentry < size; | |
14984 | gpentry += sizeof (Elf32_External_gptab)) | |
14985 | { | |
14986 | Elf32_External_gptab ext_gptab; | |
14987 | Elf32_gptab int_gptab; | |
14988 | unsigned long val; | |
14989 | unsigned long add; | |
b34976b6 | 14990 | bfd_boolean exact; |
b49e97c9 TS |
14991 | unsigned int look; |
14992 | ||
14993 | if (! (bfd_get_section_contents | |
9719ad41 RS |
14994 | (input_bfd, input_section, &ext_gptab, gpentry, |
14995 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
14996 | { |
14997 | free (tab); | |
b34976b6 | 14998 | return FALSE; |
b49e97c9 TS |
14999 | } |
15000 | ||
15001 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
15002 | &int_gptab); | |
15003 | val = int_gptab.gt_entry.gt_g_value; | |
15004 | add = int_gptab.gt_entry.gt_bytes - last; | |
15005 | ||
b34976b6 | 15006 | exact = FALSE; |
b49e97c9 TS |
15007 | for (look = 1; look < c; look++) |
15008 | { | |
15009 | if (tab[look].gt_entry.gt_g_value >= val) | |
15010 | tab[look].gt_entry.gt_bytes += add; | |
15011 | ||
15012 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 15013 | exact = TRUE; |
b49e97c9 TS |
15014 | } |
15015 | ||
15016 | if (! exact) | |
15017 | { | |
15018 | Elf32_gptab *new_tab; | |
15019 | unsigned int max; | |
15020 | ||
15021 | /* We need a new table entry. */ | |
15022 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 15023 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
15024 | if (new_tab == NULL) |
15025 | { | |
15026 | free (tab); | |
b34976b6 | 15027 | return FALSE; |
b49e97c9 TS |
15028 | } |
15029 | tab = new_tab; | |
15030 | tab[c].gt_entry.gt_g_value = val; | |
15031 | tab[c].gt_entry.gt_bytes = add; | |
15032 | ||
15033 | /* Merge in the size for the next smallest -G | |
15034 | value, since that will be implied by this new | |
15035 | value. */ | |
15036 | max = 0; | |
15037 | for (look = 1; look < c; look++) | |
15038 | { | |
15039 | if (tab[look].gt_entry.gt_g_value < val | |
15040 | && (max == 0 | |
15041 | || (tab[look].gt_entry.gt_g_value | |
15042 | > tab[max].gt_entry.gt_g_value))) | |
15043 | max = look; | |
15044 | } | |
15045 | if (max != 0) | |
15046 | tab[c].gt_entry.gt_bytes += | |
15047 | tab[max].gt_entry.gt_bytes; | |
15048 | ||
15049 | ++c; | |
15050 | } | |
15051 | ||
15052 | last = int_gptab.gt_entry.gt_bytes; | |
15053 | } | |
15054 | ||
15055 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
15056 | elf_link_input_bfd ignores this section. */ | |
15057 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
15058 | } | |
15059 | ||
15060 | /* The table must be sorted by -G value. */ | |
15061 | if (c > 2) | |
15062 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
15063 | ||
15064 | /* Swap out the table. */ | |
15065 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 15066 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
15067 | if (ext_tab == NULL) |
15068 | { | |
15069 | free (tab); | |
b34976b6 | 15070 | return FALSE; |
b49e97c9 TS |
15071 | } |
15072 | ||
15073 | for (j = 0; j < c; j++) | |
15074 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
15075 | free (tab); | |
15076 | ||
eea6121a | 15077 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
15078 | o->contents = (bfd_byte *) ext_tab; |
15079 | ||
15080 | /* Skip this section later on (I don't think this currently | |
15081 | matters, but someday it might). */ | |
8423293d | 15082 | o->map_head.link_order = NULL; |
b49e97c9 TS |
15083 | } |
15084 | } | |
15085 | ||
15086 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 15087 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 15088 | return FALSE; |
b49e97c9 TS |
15089 | |
15090 | /* Now write out the computed sections. */ | |
15091 | ||
351cdf24 MF |
15092 | if (abiflags_sec != NULL) |
15093 | { | |
15094 | Elf_External_ABIFlags_v0 ext; | |
15095 | Elf_Internal_ABIFlags_v0 *abiflags; | |
15096 | ||
15097 | abiflags = &mips_elf_tdata (abfd)->abiflags; | |
15098 | ||
15099 | /* Set up the abiflags if no valid input sections were found. */ | |
15100 | if (!mips_elf_tdata (abfd)->abiflags_valid) | |
15101 | { | |
15102 | infer_mips_abiflags (abfd, abiflags); | |
15103 | mips_elf_tdata (abfd)->abiflags_valid = TRUE; | |
15104 | } | |
15105 | bfd_mips_elf_swap_abiflags_v0_out (abfd, abiflags, &ext); | |
15106 | if (! bfd_set_section_contents (abfd, abiflags_sec, &ext, 0, sizeof ext)) | |
15107 | return FALSE; | |
15108 | } | |
15109 | ||
9719ad41 | 15110 | if (reginfo_sec != NULL) |
b49e97c9 TS |
15111 | { |
15112 | Elf32_External_RegInfo ext; | |
15113 | ||
15114 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 15115 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 15116 | return FALSE; |
b49e97c9 TS |
15117 | } |
15118 | ||
9719ad41 | 15119 | if (mdebug_sec != NULL) |
b49e97c9 TS |
15120 | { |
15121 | BFD_ASSERT (abfd->output_has_begun); | |
15122 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
15123 | swap, info, | |
15124 | mdebug_sec->filepos)) | |
b34976b6 | 15125 | return FALSE; |
b49e97c9 TS |
15126 | |
15127 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
15128 | } | |
15129 | ||
9719ad41 | 15130 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
15131 | { |
15132 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
15133 | gptab_data_sec->contents, | |
eea6121a | 15134 | 0, gptab_data_sec->size)) |
b34976b6 | 15135 | return FALSE; |
b49e97c9 TS |
15136 | } |
15137 | ||
9719ad41 | 15138 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
15139 | { |
15140 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
15141 | gptab_bss_sec->contents, | |
eea6121a | 15142 | 0, gptab_bss_sec->size)) |
b34976b6 | 15143 | return FALSE; |
b49e97c9 TS |
15144 | } |
15145 | ||
15146 | if (SGI_COMPAT (abfd)) | |
15147 | { | |
15148 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
15149 | if (rtproc_sec != NULL) | |
15150 | { | |
15151 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
15152 | rtproc_sec->contents, | |
eea6121a | 15153 | 0, rtproc_sec->size)) |
b34976b6 | 15154 | return FALSE; |
b49e97c9 TS |
15155 | } |
15156 | } | |
15157 | ||
b34976b6 | 15158 | return TRUE; |
b49e97c9 TS |
15159 | } |
15160 | \f | |
b2e9744f MR |
15161 | /* Merge object file header flags from IBFD into OBFD. Raise an error |
15162 | if there are conflicting settings. */ | |
15163 | ||
15164 | static bfd_boolean | |
50e03d47 | 15165 | mips_elf_merge_obj_e_flags (bfd *ibfd, struct bfd_link_info *info) |
b2e9744f | 15166 | { |
50e03d47 | 15167 | bfd *obfd = info->output_bfd; |
b2e9744f MR |
15168 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); |
15169 | flagword old_flags; | |
15170 | flagword new_flags; | |
15171 | bfd_boolean ok; | |
15172 | ||
15173 | new_flags = elf_elfheader (ibfd)->e_flags; | |
15174 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
15175 | old_flags = elf_elfheader (obfd)->e_flags; | |
15176 | ||
15177 | /* Check flag compatibility. */ | |
15178 | ||
15179 | new_flags &= ~EF_MIPS_NOREORDER; | |
15180 | old_flags &= ~EF_MIPS_NOREORDER; | |
15181 | ||
15182 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It | |
15183 | doesn't seem to matter. */ | |
15184 | new_flags &= ~EF_MIPS_XGOT; | |
15185 | old_flags &= ~EF_MIPS_XGOT; | |
15186 | ||
15187 | /* MIPSpro generates ucode info in n64 objects. Again, we should | |
15188 | just be able to ignore this. */ | |
15189 | new_flags &= ~EF_MIPS_UCODE; | |
15190 | old_flags &= ~EF_MIPS_UCODE; | |
15191 | ||
15192 | /* DSOs should only be linked with CPIC code. */ | |
15193 | if ((ibfd->flags & DYNAMIC) != 0) | |
15194 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
15195 | ||
15196 | if (new_flags == old_flags) | |
15197 | return TRUE; | |
15198 | ||
15199 | ok = TRUE; | |
15200 | ||
15201 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) | |
15202 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
15203 | { | |
4eca0228 | 15204 | _bfd_error_handler |
871b3ab2 | 15205 | (_("%pB: warning: linking abicalls files with non-abicalls files"), |
b2e9744f MR |
15206 | ibfd); |
15207 | ok = TRUE; | |
15208 | } | |
15209 | ||
15210 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) | |
15211 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
15212 | if (! (new_flags & EF_MIPS_PIC)) | |
15213 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
15214 | ||
15215 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
15216 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
15217 | ||
15218 | /* Compare the ISAs. */ | |
15219 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
15220 | { | |
4eca0228 | 15221 | _bfd_error_handler |
871b3ab2 | 15222 | (_("%pB: linking 32-bit code with 64-bit code"), |
b2e9744f MR |
15223 | ibfd); |
15224 | ok = FALSE; | |
15225 | } | |
15226 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
15227 | { | |
15228 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
15229 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
15230 | { | |
15231 | /* Copy the architecture info from IBFD to OBFD. Also copy | |
15232 | the 32-bit flag (if set) so that we continue to recognise | |
15233 | OBFD as a 32-bit binary. */ | |
15234 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
15235 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
15236 | elf_elfheader (obfd)->e_flags | |
15237 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15238 | ||
15239 | /* Update the ABI flags isa_level, isa_rev, isa_ext fields. */ | |
15240 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); | |
15241 | ||
15242 | /* Copy across the ABI flags if OBFD doesn't use them | |
15243 | and if that was what caused us to treat IBFD as 32-bit. */ | |
15244 | if ((old_flags & EF_MIPS_ABI) == 0 | |
15245 | && mips_32bit_flags_p (new_flags) | |
15246 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
15247 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
15248 | } | |
15249 | else | |
15250 | { | |
15251 | /* The ISAs aren't compatible. */ | |
4eca0228 | 15252 | _bfd_error_handler |
695344c0 | 15253 | /* xgettext:c-format */ |
871b3ab2 | 15254 | (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15255 | ibfd, |
15256 | bfd_printable_name (ibfd), | |
15257 | bfd_printable_name (obfd)); | |
15258 | ok = FALSE; | |
15259 | } | |
15260 | } | |
15261 | ||
15262 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15263 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15264 | ||
15265 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
15266 | does set EI_CLASS differently from any 32-bit ABI. */ | |
15267 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
15268 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15269 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15270 | { | |
15271 | /* Only error if both are set (to different values). */ | |
15272 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
15273 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15274 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15275 | { | |
4eca0228 | 15276 | _bfd_error_handler |
695344c0 | 15277 | /* xgettext:c-format */ |
871b3ab2 | 15278 | (_("%pB: ABI mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15279 | ibfd, |
15280 | elf_mips_abi_name (ibfd), | |
15281 | elf_mips_abi_name (obfd)); | |
15282 | ok = FALSE; | |
15283 | } | |
15284 | new_flags &= ~EF_MIPS_ABI; | |
15285 | old_flags &= ~EF_MIPS_ABI; | |
15286 | } | |
15287 | ||
15288 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together | |
15289 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
15290 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
15291 | { | |
15292 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15293 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15294 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
15295 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
15296 | int micro_mis = old_m16 && new_micro; | |
15297 | int m16_mis = old_micro && new_m16; | |
15298 | ||
15299 | if (m16_mis || micro_mis) | |
15300 | { | |
4eca0228 | 15301 | _bfd_error_handler |
695344c0 | 15302 | /* xgettext:c-format */ |
871b3ab2 | 15303 | (_("%pB: ASE mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15304 | ibfd, |
15305 | m16_mis ? "MIPS16" : "microMIPS", | |
15306 | m16_mis ? "microMIPS" : "MIPS16"); | |
15307 | ok = FALSE; | |
15308 | } | |
15309 | ||
15310 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
15311 | ||
15312 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
15313 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
15314 | } | |
15315 | ||
15316 | /* Compare NaN encodings. */ | |
15317 | if ((new_flags & EF_MIPS_NAN2008) != (old_flags & EF_MIPS_NAN2008)) | |
15318 | { | |
695344c0 | 15319 | /* xgettext:c-format */ |
871b3ab2 | 15320 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15321 | ibfd, |
15322 | (new_flags & EF_MIPS_NAN2008 | |
15323 | ? "-mnan=2008" : "-mnan=legacy"), | |
15324 | (old_flags & EF_MIPS_NAN2008 | |
15325 | ? "-mnan=2008" : "-mnan=legacy")); | |
15326 | ok = FALSE; | |
15327 | new_flags &= ~EF_MIPS_NAN2008; | |
15328 | old_flags &= ~EF_MIPS_NAN2008; | |
15329 | } | |
15330 | ||
15331 | /* Compare FP64 state. */ | |
15332 | if ((new_flags & EF_MIPS_FP64) != (old_flags & EF_MIPS_FP64)) | |
15333 | { | |
695344c0 | 15334 | /* xgettext:c-format */ |
871b3ab2 | 15335 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15336 | ibfd, |
15337 | (new_flags & EF_MIPS_FP64 | |
15338 | ? "-mfp64" : "-mfp32"), | |
15339 | (old_flags & EF_MIPS_FP64 | |
15340 | ? "-mfp64" : "-mfp32")); | |
15341 | ok = FALSE; | |
15342 | new_flags &= ~EF_MIPS_FP64; | |
15343 | old_flags &= ~EF_MIPS_FP64; | |
15344 | } | |
15345 | ||
15346 | /* Warn about any other mismatches */ | |
15347 | if (new_flags != old_flags) | |
15348 | { | |
695344c0 | 15349 | /* xgettext:c-format */ |
4eca0228 | 15350 | _bfd_error_handler |
871b3ab2 | 15351 | (_("%pB: uses different e_flags (%#x) fields than previous modules " |
d42c267e AM |
15352 | "(%#x)"), |
15353 | ibfd, new_flags, old_flags); | |
b2e9744f MR |
15354 | ok = FALSE; |
15355 | } | |
15356 | ||
15357 | return ok; | |
15358 | } | |
15359 | ||
2cf19d5c JM |
15360 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
15361 | there are conflicting attributes. */ | |
15362 | static bfd_boolean | |
50e03d47 | 15363 | mips_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
2cf19d5c | 15364 | { |
50e03d47 | 15365 | bfd *obfd = info->output_bfd; |
2cf19d5c JM |
15366 | obj_attribute *in_attr; |
15367 | obj_attribute *out_attr; | |
6ae68ba3 | 15368 | bfd *abi_fp_bfd; |
b60bf9be | 15369 | bfd *abi_msa_bfd; |
6ae68ba3 MR |
15370 | |
15371 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
15372 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
d929bc19 | 15373 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != Val_GNU_MIPS_ABI_FP_ANY) |
6ae68ba3 | 15374 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; |
2cf19d5c | 15375 | |
b60bf9be CF |
15376 | abi_msa_bfd = mips_elf_tdata (obfd)->abi_msa_bfd; |
15377 | if (!abi_msa_bfd | |
15378 | && in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15379 | mips_elf_tdata (obfd)->abi_msa_bfd = ibfd; | |
15380 | ||
2cf19d5c JM |
15381 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
15382 | { | |
15383 | /* This is the first object. Copy the attributes. */ | |
15384 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
15385 | ||
15386 | /* Use the Tag_null value to indicate the attributes have been | |
15387 | initialized. */ | |
15388 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
15389 | ||
15390 | return TRUE; | |
15391 | } | |
15392 | ||
15393 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
15394 | non-conflicting ones. */ | |
2cf19d5c JM |
15395 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
15396 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
15397 | { | |
757a636f | 15398 | int out_fp, in_fp; |
6ae68ba3 | 15399 | |
757a636f RS |
15400 | out_fp = out_attr[Tag_GNU_MIPS_ABI_FP].i; |
15401 | in_fp = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15402 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
15403 | if (out_fp == Val_GNU_MIPS_ABI_FP_ANY) | |
15404 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_fp; | |
351cdf24 MF |
15405 | else if (out_fp == Val_GNU_MIPS_ABI_FP_XX |
15406 | && (in_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15407 | || in_fp == Val_GNU_MIPS_ABI_FP_64 | |
15408 | || in_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15409 | { | |
15410 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15411 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15412 | } | |
15413 | else if (in_fp == Val_GNU_MIPS_ABI_FP_XX | |
15414 | && (out_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15415 | || out_fp == Val_GNU_MIPS_ABI_FP_64 | |
15416 | || out_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15417 | /* Keep the current setting. */; | |
15418 | else if (out_fp == Val_GNU_MIPS_ABI_FP_64A | |
15419 | && in_fp == Val_GNU_MIPS_ABI_FP_64) | |
15420 | { | |
15421 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15422 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15423 | } | |
15424 | else if (in_fp == Val_GNU_MIPS_ABI_FP_64A | |
15425 | && out_fp == Val_GNU_MIPS_ABI_FP_64) | |
15426 | /* Keep the current setting. */; | |
757a636f RS |
15427 | else if (in_fp != Val_GNU_MIPS_ABI_FP_ANY) |
15428 | { | |
15429 | const char *out_string, *in_string; | |
6ae68ba3 | 15430 | |
757a636f RS |
15431 | out_string = _bfd_mips_fp_abi_string (out_fp); |
15432 | in_string = _bfd_mips_fp_abi_string (in_fp); | |
15433 | /* First warn about cases involving unrecognised ABIs. */ | |
15434 | if (!out_string && !in_string) | |
695344c0 | 15435 | /* xgettext:c-format */ |
757a636f | 15436 | _bfd_error_handler |
2c1c9679 | 15437 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15438 | "(set by %pB), %pB uses unknown floating point ABI %d"), |
c08bb8dd | 15439 | obfd, out_fp, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15440 | else if (!out_string) |
15441 | _bfd_error_handler | |
695344c0 | 15442 | /* xgettext:c-format */ |
2c1c9679 | 15443 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15444 | "(set by %pB), %pB uses %s"), |
c08bb8dd | 15445 | obfd, out_fp, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15446 | else if (!in_string) |
15447 | _bfd_error_handler | |
695344c0 | 15448 | /* xgettext:c-format */ |
2c1c9679 | 15449 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15450 | "%pB uses unknown floating point ABI %d"), |
c08bb8dd | 15451 | obfd, out_string, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15452 | else |
15453 | { | |
15454 | /* If one of the bfds is soft-float, the other must be | |
15455 | hard-float. The exact choice of hard-float ABI isn't | |
15456 | really relevant to the error message. */ | |
15457 | if (in_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15458 | out_string = "-mhard-float"; | |
15459 | else if (out_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15460 | in_string = "-mhard-float"; | |
15461 | _bfd_error_handler | |
695344c0 | 15462 | /* xgettext:c-format */ |
2c1c9679 | 15463 | (_("warning: %pB uses %s (set by %pB), %pB uses %s"), |
c08bb8dd | 15464 | obfd, out_string, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15465 | } |
15466 | } | |
2cf19d5c JM |
15467 | } |
15468 | ||
b60bf9be CF |
15469 | /* Check for conflicting Tag_GNU_MIPS_ABI_MSA attributes and merge |
15470 | non-conflicting ones. */ | |
15471 | if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15472 | { | |
15473 | out_attr[Tag_GNU_MIPS_ABI_MSA].type = 1; | |
15474 | if (out_attr[Tag_GNU_MIPS_ABI_MSA].i == Val_GNU_MIPS_ABI_MSA_ANY) | |
15475 | out_attr[Tag_GNU_MIPS_ABI_MSA].i = in_attr[Tag_GNU_MIPS_ABI_MSA].i; | |
15476 | else if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15477 | switch (out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15478 | { | |
15479 | case Val_GNU_MIPS_ABI_MSA_128: | |
15480 | _bfd_error_handler | |
695344c0 | 15481 | /* xgettext:c-format */ |
2c1c9679 | 15482 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15483 | "%pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15484 | obfd, "-mmsa", abi_msa_bfd, |
15485 | ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15486 | break; |
15487 | ||
15488 | default: | |
15489 | switch (in_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15490 | { | |
15491 | case Val_GNU_MIPS_ABI_MSA_128: | |
15492 | _bfd_error_handler | |
695344c0 | 15493 | /* xgettext:c-format */ |
2c1c9679 | 15494 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15495 | "(set by %pB), %pB uses %s"), |
c08bb8dd AM |
15496 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15497 | abi_msa_bfd, ibfd, "-mmsa"); | |
b60bf9be CF |
15498 | break; |
15499 | ||
15500 | default: | |
15501 | _bfd_error_handler | |
695344c0 | 15502 | /* xgettext:c-format */ |
2c1c9679 | 15503 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15504 | "(set by %pB), %pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15505 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15506 | abi_msa_bfd, ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15507 | break; |
15508 | } | |
15509 | } | |
15510 | } | |
15511 | ||
2cf19d5c | 15512 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 15513 | return _bfd_elf_merge_object_attributes (ibfd, info); |
2cf19d5c JM |
15514 | } |
15515 | ||
a3dc0a7f MR |
15516 | /* Merge object ABI flags from IBFD into OBFD. Raise an error if |
15517 | there are conflicting settings. */ | |
15518 | ||
15519 | static bfd_boolean | |
15520 | mips_elf_merge_obj_abiflags (bfd *ibfd, bfd *obfd) | |
15521 | { | |
15522 | obj_attribute *out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
15523 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); | |
15524 | struct mips_elf_obj_tdata *in_tdata = mips_elf_tdata (ibfd); | |
15525 | ||
15526 | /* Update the output abiflags fp_abi using the computed fp_abi. */ | |
15527 | out_tdata->abiflags.fp_abi = out_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15528 | ||
15529 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
15530 | /* Merge abiflags. */ | |
15531 | out_tdata->abiflags.isa_level = max (out_tdata->abiflags.isa_level, | |
15532 | in_tdata->abiflags.isa_level); | |
15533 | out_tdata->abiflags.isa_rev = max (out_tdata->abiflags.isa_rev, | |
15534 | in_tdata->abiflags.isa_rev); | |
15535 | out_tdata->abiflags.gpr_size = max (out_tdata->abiflags.gpr_size, | |
15536 | in_tdata->abiflags.gpr_size); | |
15537 | out_tdata->abiflags.cpr1_size = max (out_tdata->abiflags.cpr1_size, | |
15538 | in_tdata->abiflags.cpr1_size); | |
15539 | out_tdata->abiflags.cpr2_size = max (out_tdata->abiflags.cpr2_size, | |
15540 | in_tdata->abiflags.cpr2_size); | |
15541 | #undef max | |
15542 | out_tdata->abiflags.ases |= in_tdata->abiflags.ases; | |
15543 | out_tdata->abiflags.flags1 |= in_tdata->abiflags.flags1; | |
15544 | ||
15545 | return TRUE; | |
15546 | } | |
15547 | ||
b49e97c9 TS |
15548 | /* Merge backend specific data from an object file to the output |
15549 | object file when linking. */ | |
15550 | ||
b34976b6 | 15551 | bfd_boolean |
50e03d47 | 15552 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
b49e97c9 | 15553 | { |
50e03d47 | 15554 | bfd *obfd = info->output_bfd; |
cf8502c1 MR |
15555 | struct mips_elf_obj_tdata *out_tdata; |
15556 | struct mips_elf_obj_tdata *in_tdata; | |
b34976b6 | 15557 | bfd_boolean null_input_bfd = TRUE; |
b49e97c9 | 15558 | asection *sec; |
d537eeb5 | 15559 | bfd_boolean ok; |
b49e97c9 | 15560 | |
58238693 | 15561 | /* Check if we have the same endianness. */ |
50e03d47 | 15562 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
aa701218 | 15563 | { |
4eca0228 | 15564 | _bfd_error_handler |
871b3ab2 | 15565 | (_("%pB: endianness incompatible with that of the selected emulation"), |
d003868e | 15566 | ibfd); |
aa701218 AO |
15567 | return FALSE; |
15568 | } | |
b49e97c9 | 15569 | |
d5eaccd7 | 15570 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 15571 | return TRUE; |
b49e97c9 | 15572 | |
cf8502c1 MR |
15573 | in_tdata = mips_elf_tdata (ibfd); |
15574 | out_tdata = mips_elf_tdata (obfd); | |
15575 | ||
aa701218 AO |
15576 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
15577 | { | |
4eca0228 | 15578 | _bfd_error_handler |
871b3ab2 | 15579 | (_("%pB: ABI is incompatible with that of the selected emulation"), |
d003868e | 15580 | ibfd); |
aa701218 AO |
15581 | return FALSE; |
15582 | } | |
15583 | ||
23ba6f18 MR |
15584 | /* Check to see if the input BFD actually contains any sections. If not, |
15585 | then it has no attributes, and its flags may not have been initialized | |
15586 | either, but it cannot actually cause any incompatibility. */ | |
351cdf24 MF |
15587 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
15588 | { | |
15589 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
15590 | which are automatically generated by gas. Also ignore fake | |
15591 | (s)common sections, since merely defining a common symbol does | |
15592 | not affect compatibility. */ | |
15593 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
15594 | && strcmp (sec->name, ".reginfo") | |
15595 | && strcmp (sec->name, ".mdebug") | |
15596 | && (sec->size != 0 | |
15597 | || (strcmp (sec->name, ".text") | |
15598 | && strcmp (sec->name, ".data") | |
15599 | && strcmp (sec->name, ".bss")))) | |
15600 | { | |
15601 | null_input_bfd = FALSE; | |
15602 | break; | |
15603 | } | |
15604 | } | |
15605 | if (null_input_bfd) | |
15606 | return TRUE; | |
15607 | ||
28d45e28 | 15608 | /* Populate abiflags using existing information. */ |
23ba6f18 MR |
15609 | if (in_tdata->abiflags_valid) |
15610 | { | |
15611 | obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
28d45e28 MR |
15612 | Elf_Internal_ABIFlags_v0 in_abiflags; |
15613 | Elf_Internal_ABIFlags_v0 abiflags; | |
15614 | ||
15615 | /* Set up the FP ABI attribute from the abiflags if it is not already | |
07d6d2b8 | 15616 | set. */ |
23ba6f18 | 15617 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY) |
07d6d2b8 | 15618 | in_attr[Tag_GNU_MIPS_ABI_FP].i = in_tdata->abiflags.fp_abi; |
23ba6f18 | 15619 | |
351cdf24 | 15620 | infer_mips_abiflags (ibfd, &abiflags); |
cf8502c1 | 15621 | in_abiflags = in_tdata->abiflags; |
351cdf24 MF |
15622 | |
15623 | /* It is not possible to infer the correct ISA revision | |
07d6d2b8 | 15624 | for R3 or R5 so drop down to R2 for the checks. */ |
351cdf24 MF |
15625 | if (in_abiflags.isa_rev == 3 || in_abiflags.isa_rev == 5) |
15626 | in_abiflags.isa_rev = 2; | |
15627 | ||
c97c330b MF |
15628 | if (LEVEL_REV (in_abiflags.isa_level, in_abiflags.isa_rev) |
15629 | < LEVEL_REV (abiflags.isa_level, abiflags.isa_rev)) | |
4eca0228 | 15630 | _bfd_error_handler |
2c1c9679 | 15631 | (_("%pB: warning: inconsistent ISA between e_flags and " |
351cdf24 MF |
15632 | ".MIPS.abiflags"), ibfd); |
15633 | if (abiflags.fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
15634 | && in_abiflags.fp_abi != abiflags.fp_abi) | |
4eca0228 | 15635 | _bfd_error_handler |
2c1c9679 | 15636 | (_("%pB: warning: inconsistent FP ABI between .gnu.attributes and " |
351cdf24 MF |
15637 | ".MIPS.abiflags"), ibfd); |
15638 | if ((in_abiflags.ases & abiflags.ases) != abiflags.ases) | |
4eca0228 | 15639 | _bfd_error_handler |
2c1c9679 | 15640 | (_("%pB: warning: inconsistent ASEs between e_flags and " |
351cdf24 | 15641 | ".MIPS.abiflags"), ibfd); |
c97c330b MF |
15642 | /* The isa_ext is allowed to be an extension of what can be inferred |
15643 | from e_flags. */ | |
15644 | if (!mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags.isa_ext), | |
15645 | bfd_mips_isa_ext_mach (in_abiflags.isa_ext))) | |
4eca0228 | 15646 | _bfd_error_handler |
2c1c9679 | 15647 | (_("%pB: warning: inconsistent ISA extensions between e_flags and " |
351cdf24 MF |
15648 | ".MIPS.abiflags"), ibfd); |
15649 | if (in_abiflags.flags2 != 0) | |
4eca0228 | 15650 | _bfd_error_handler |
2c1c9679 | 15651 | (_("%pB: warning: unexpected flag in the flags2 field of " |
351cdf24 | 15652 | ".MIPS.abiflags (0x%lx)"), ibfd, |
d42c267e | 15653 | in_abiflags.flags2); |
351cdf24 | 15654 | } |
28d45e28 MR |
15655 | else |
15656 | { | |
15657 | infer_mips_abiflags (ibfd, &in_tdata->abiflags); | |
15658 | in_tdata->abiflags_valid = TRUE; | |
15659 | } | |
15660 | ||
cf8502c1 | 15661 | if (!out_tdata->abiflags_valid) |
351cdf24 MF |
15662 | { |
15663 | /* Copy input abiflags if output abiflags are not already valid. */ | |
cf8502c1 MR |
15664 | out_tdata->abiflags = in_tdata->abiflags; |
15665 | out_tdata->abiflags_valid = TRUE; | |
351cdf24 | 15666 | } |
b49e97c9 TS |
15667 | |
15668 | if (! elf_flags_init (obfd)) | |
15669 | { | |
b34976b6 | 15670 | elf_flags_init (obfd) = TRUE; |
351cdf24 | 15671 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b49e97c9 TS |
15672 | elf_elfheader (obfd)->e_ident[EI_CLASS] |
15673 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
15674 | ||
15675 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 15676 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 15677 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 15678 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
15679 | { |
15680 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
15681 | bfd_get_mach (ibfd))) | |
b34976b6 | 15682 | return FALSE; |
351cdf24 MF |
15683 | |
15684 | /* Update the ABI flags isa_level, isa_rev and isa_ext fields. */ | |
cf8502c1 | 15685 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); |
b49e97c9 TS |
15686 | } |
15687 | ||
d537eeb5 | 15688 | ok = TRUE; |
b49e97c9 | 15689 | } |
d537eeb5 | 15690 | else |
50e03d47 | 15691 | ok = mips_elf_merge_obj_e_flags (ibfd, info); |
d537eeb5 | 15692 | |
50e03d47 | 15693 | ok = mips_elf_merge_obj_attributes (ibfd, info) && ok; |
b49e97c9 | 15694 | |
a3dc0a7f | 15695 | ok = mips_elf_merge_obj_abiflags (ibfd, obfd) && ok; |
351cdf24 | 15696 | |
d537eeb5 | 15697 | if (!ok) |
b49e97c9 TS |
15698 | { |
15699 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15700 | return FALSE; |
b49e97c9 TS |
15701 | } |
15702 | ||
b34976b6 | 15703 | return TRUE; |
b49e97c9 TS |
15704 | } |
15705 | ||
15706 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
15707 | ||
b34976b6 | 15708 | bfd_boolean |
9719ad41 | 15709 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
15710 | { |
15711 | BFD_ASSERT (!elf_flags_init (abfd) | |
15712 | || elf_elfheader (abfd)->e_flags == flags); | |
15713 | ||
15714 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
15715 | elf_flags_init (abfd) = TRUE; |
15716 | return TRUE; | |
b49e97c9 TS |
15717 | } |
15718 | ||
ad9563d6 CM |
15719 | char * |
15720 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
15721 | { | |
15722 | switch (dtag) | |
15723 | { | |
15724 | default: return ""; | |
15725 | case DT_MIPS_RLD_VERSION: | |
15726 | return "MIPS_RLD_VERSION"; | |
15727 | case DT_MIPS_TIME_STAMP: | |
15728 | return "MIPS_TIME_STAMP"; | |
15729 | case DT_MIPS_ICHECKSUM: | |
15730 | return "MIPS_ICHECKSUM"; | |
15731 | case DT_MIPS_IVERSION: | |
15732 | return "MIPS_IVERSION"; | |
15733 | case DT_MIPS_FLAGS: | |
15734 | return "MIPS_FLAGS"; | |
15735 | case DT_MIPS_BASE_ADDRESS: | |
15736 | return "MIPS_BASE_ADDRESS"; | |
15737 | case DT_MIPS_MSYM: | |
15738 | return "MIPS_MSYM"; | |
15739 | case DT_MIPS_CONFLICT: | |
15740 | return "MIPS_CONFLICT"; | |
15741 | case DT_MIPS_LIBLIST: | |
15742 | return "MIPS_LIBLIST"; | |
15743 | case DT_MIPS_LOCAL_GOTNO: | |
15744 | return "MIPS_LOCAL_GOTNO"; | |
15745 | case DT_MIPS_CONFLICTNO: | |
15746 | return "MIPS_CONFLICTNO"; | |
15747 | case DT_MIPS_LIBLISTNO: | |
15748 | return "MIPS_LIBLISTNO"; | |
15749 | case DT_MIPS_SYMTABNO: | |
15750 | return "MIPS_SYMTABNO"; | |
15751 | case DT_MIPS_UNREFEXTNO: | |
15752 | return "MIPS_UNREFEXTNO"; | |
15753 | case DT_MIPS_GOTSYM: | |
15754 | return "MIPS_GOTSYM"; | |
15755 | case DT_MIPS_HIPAGENO: | |
15756 | return "MIPS_HIPAGENO"; | |
15757 | case DT_MIPS_RLD_MAP: | |
15758 | return "MIPS_RLD_MAP"; | |
a5499fa4 MF |
15759 | case DT_MIPS_RLD_MAP_REL: |
15760 | return "MIPS_RLD_MAP_REL"; | |
ad9563d6 CM |
15761 | case DT_MIPS_DELTA_CLASS: |
15762 | return "MIPS_DELTA_CLASS"; | |
15763 | case DT_MIPS_DELTA_CLASS_NO: | |
15764 | return "MIPS_DELTA_CLASS_NO"; | |
15765 | case DT_MIPS_DELTA_INSTANCE: | |
15766 | return "MIPS_DELTA_INSTANCE"; | |
15767 | case DT_MIPS_DELTA_INSTANCE_NO: | |
15768 | return "MIPS_DELTA_INSTANCE_NO"; | |
15769 | case DT_MIPS_DELTA_RELOC: | |
15770 | return "MIPS_DELTA_RELOC"; | |
15771 | case DT_MIPS_DELTA_RELOC_NO: | |
15772 | return "MIPS_DELTA_RELOC_NO"; | |
15773 | case DT_MIPS_DELTA_SYM: | |
15774 | return "MIPS_DELTA_SYM"; | |
15775 | case DT_MIPS_DELTA_SYM_NO: | |
15776 | return "MIPS_DELTA_SYM_NO"; | |
15777 | case DT_MIPS_DELTA_CLASSSYM: | |
15778 | return "MIPS_DELTA_CLASSSYM"; | |
15779 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
15780 | return "MIPS_DELTA_CLASSSYM_NO"; | |
15781 | case DT_MIPS_CXX_FLAGS: | |
15782 | return "MIPS_CXX_FLAGS"; | |
15783 | case DT_MIPS_PIXIE_INIT: | |
15784 | return "MIPS_PIXIE_INIT"; | |
15785 | case DT_MIPS_SYMBOL_LIB: | |
15786 | return "MIPS_SYMBOL_LIB"; | |
15787 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
15788 | return "MIPS_LOCALPAGE_GOTIDX"; | |
15789 | case DT_MIPS_LOCAL_GOTIDX: | |
15790 | return "MIPS_LOCAL_GOTIDX"; | |
15791 | case DT_MIPS_HIDDEN_GOTIDX: | |
15792 | return "MIPS_HIDDEN_GOTIDX"; | |
15793 | case DT_MIPS_PROTECTED_GOTIDX: | |
15794 | return "MIPS_PROTECTED_GOT_IDX"; | |
15795 | case DT_MIPS_OPTIONS: | |
15796 | return "MIPS_OPTIONS"; | |
15797 | case DT_MIPS_INTERFACE: | |
15798 | return "MIPS_INTERFACE"; | |
15799 | case DT_MIPS_DYNSTR_ALIGN: | |
15800 | return "DT_MIPS_DYNSTR_ALIGN"; | |
15801 | case DT_MIPS_INTERFACE_SIZE: | |
15802 | return "DT_MIPS_INTERFACE_SIZE"; | |
15803 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
15804 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
15805 | case DT_MIPS_PERF_SUFFIX: | |
15806 | return "DT_MIPS_PERF_SUFFIX"; | |
15807 | case DT_MIPS_COMPACT_SIZE: | |
15808 | return "DT_MIPS_COMPACT_SIZE"; | |
15809 | case DT_MIPS_GP_VALUE: | |
15810 | return "DT_MIPS_GP_VALUE"; | |
15811 | case DT_MIPS_AUX_DYNAMIC: | |
15812 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
15813 | case DT_MIPS_PLTGOT: |
15814 | return "DT_MIPS_PLTGOT"; | |
15815 | case DT_MIPS_RWPLT: | |
15816 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
15817 | } |
15818 | } | |
15819 | ||
757a636f RS |
15820 | /* Return the meaning of Tag_GNU_MIPS_ABI_FP value FP, or null if |
15821 | not known. */ | |
15822 | ||
15823 | const char * | |
15824 | _bfd_mips_fp_abi_string (int fp) | |
15825 | { | |
15826 | switch (fp) | |
15827 | { | |
15828 | /* These strings aren't translated because they're simply | |
15829 | option lists. */ | |
15830 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
15831 | return "-mdouble-float"; | |
15832 | ||
15833 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
15834 | return "-msingle-float"; | |
15835 | ||
15836 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
15837 | return "-msoft-float"; | |
15838 | ||
351cdf24 MF |
15839 | case Val_GNU_MIPS_ABI_FP_OLD_64: |
15840 | return _("-mips32r2 -mfp64 (12 callee-saved)"); | |
15841 | ||
15842 | case Val_GNU_MIPS_ABI_FP_XX: | |
15843 | return "-mfpxx"; | |
15844 | ||
757a636f | 15845 | case Val_GNU_MIPS_ABI_FP_64: |
351cdf24 MF |
15846 | return "-mgp32 -mfp64"; |
15847 | ||
15848 | case Val_GNU_MIPS_ABI_FP_64A: | |
15849 | return "-mgp32 -mfp64 -mno-odd-spreg"; | |
757a636f RS |
15850 | |
15851 | default: | |
15852 | return 0; | |
15853 | } | |
15854 | } | |
15855 | ||
351cdf24 MF |
15856 | static void |
15857 | print_mips_ases (FILE *file, unsigned int mask) | |
15858 | { | |
15859 | if (mask & AFL_ASE_DSP) | |
15860 | fputs ("\n\tDSP ASE", file); | |
15861 | if (mask & AFL_ASE_DSPR2) | |
15862 | fputs ("\n\tDSP R2 ASE", file); | |
8f4f9071 MF |
15863 | if (mask & AFL_ASE_DSPR3) |
15864 | fputs ("\n\tDSP R3 ASE", file); | |
351cdf24 MF |
15865 | if (mask & AFL_ASE_EVA) |
15866 | fputs ("\n\tEnhanced VA Scheme", file); | |
15867 | if (mask & AFL_ASE_MCU) | |
15868 | fputs ("\n\tMCU (MicroController) ASE", file); | |
15869 | if (mask & AFL_ASE_MDMX) | |
15870 | fputs ("\n\tMDMX ASE", file); | |
15871 | if (mask & AFL_ASE_MIPS3D) | |
15872 | fputs ("\n\tMIPS-3D ASE", file); | |
15873 | if (mask & AFL_ASE_MT) | |
15874 | fputs ("\n\tMT ASE", file); | |
15875 | if (mask & AFL_ASE_SMARTMIPS) | |
15876 | fputs ("\n\tSmartMIPS ASE", file); | |
15877 | if (mask & AFL_ASE_VIRT) | |
15878 | fputs ("\n\tVZ ASE", file); | |
15879 | if (mask & AFL_ASE_MSA) | |
15880 | fputs ("\n\tMSA ASE", file); | |
15881 | if (mask & AFL_ASE_MIPS16) | |
15882 | fputs ("\n\tMIPS16 ASE", file); | |
15883 | if (mask & AFL_ASE_MICROMIPS) | |
15884 | fputs ("\n\tMICROMIPS ASE", file); | |
15885 | if (mask & AFL_ASE_XPA) | |
15886 | fputs ("\n\tXPA ASE", file); | |
25499ac7 MR |
15887 | if (mask & AFL_ASE_MIPS16E2) |
15888 | fputs ("\n\tMIPS16e2 ASE", file); | |
730c3174 SE |
15889 | if (mask & AFL_ASE_CRC) |
15890 | fputs ("\n\tCRC ASE", file); | |
6f20c942 FS |
15891 | if (mask & AFL_ASE_GINV) |
15892 | fputs ("\n\tGINV ASE", file); | |
8095d2f7 CX |
15893 | if (mask & AFL_ASE_LOONGSON_MMI) |
15894 | fputs ("\n\tLoongson MMI ASE", file); | |
716c08de CX |
15895 | if (mask & AFL_ASE_LOONGSON_CAM) |
15896 | fputs ("\n\tLoongson CAM ASE", file); | |
bdc6c06e CX |
15897 | if (mask & AFL_ASE_LOONGSON_EXT) |
15898 | fputs ("\n\tLoongson EXT ASE", file); | |
a693765e CX |
15899 | if (mask & AFL_ASE_LOONGSON_EXT2) |
15900 | fputs ("\n\tLoongson EXT2 ASE", file); | |
351cdf24 MF |
15901 | if (mask == 0) |
15902 | fprintf (file, "\n\t%s", _("None")); | |
00ac7aa0 MF |
15903 | else if ((mask & ~AFL_ASE_MASK) != 0) |
15904 | fprintf (stdout, "\n\t%s (%x)", _("Unknown"), mask & ~AFL_ASE_MASK); | |
351cdf24 MF |
15905 | } |
15906 | ||
15907 | static void | |
15908 | print_mips_isa_ext (FILE *file, unsigned int isa_ext) | |
15909 | { | |
15910 | switch (isa_ext) | |
15911 | { | |
15912 | case 0: | |
15913 | fputs (_("None"), file); | |
15914 | break; | |
15915 | case AFL_EXT_XLR: | |
15916 | fputs ("RMI XLR", file); | |
15917 | break; | |
2c629856 N |
15918 | case AFL_EXT_OCTEON3: |
15919 | fputs ("Cavium Networks Octeon3", file); | |
15920 | break; | |
351cdf24 MF |
15921 | case AFL_EXT_OCTEON2: |
15922 | fputs ("Cavium Networks Octeon2", file); | |
15923 | break; | |
15924 | case AFL_EXT_OCTEONP: | |
15925 | fputs ("Cavium Networks OcteonP", file); | |
15926 | break; | |
351cdf24 MF |
15927 | case AFL_EXT_OCTEON: |
15928 | fputs ("Cavium Networks Octeon", file); | |
15929 | break; | |
15930 | case AFL_EXT_5900: | |
15931 | fputs ("Toshiba R5900", file); | |
15932 | break; | |
15933 | case AFL_EXT_4650: | |
15934 | fputs ("MIPS R4650", file); | |
15935 | break; | |
15936 | case AFL_EXT_4010: | |
15937 | fputs ("LSI R4010", file); | |
15938 | break; | |
15939 | case AFL_EXT_4100: | |
15940 | fputs ("NEC VR4100", file); | |
15941 | break; | |
15942 | case AFL_EXT_3900: | |
15943 | fputs ("Toshiba R3900", file); | |
15944 | break; | |
15945 | case AFL_EXT_10000: | |
15946 | fputs ("MIPS R10000", file); | |
15947 | break; | |
15948 | case AFL_EXT_SB1: | |
15949 | fputs ("Broadcom SB-1", file); | |
15950 | break; | |
15951 | case AFL_EXT_4111: | |
15952 | fputs ("NEC VR4111/VR4181", file); | |
15953 | break; | |
15954 | case AFL_EXT_4120: | |
15955 | fputs ("NEC VR4120", file); | |
15956 | break; | |
15957 | case AFL_EXT_5400: | |
15958 | fputs ("NEC VR5400", file); | |
15959 | break; | |
15960 | case AFL_EXT_5500: | |
15961 | fputs ("NEC VR5500", file); | |
15962 | break; | |
15963 | case AFL_EXT_LOONGSON_2E: | |
15964 | fputs ("ST Microelectronics Loongson 2E", file); | |
15965 | break; | |
15966 | case AFL_EXT_LOONGSON_2F: | |
15967 | fputs ("ST Microelectronics Loongson 2F", file); | |
15968 | break; | |
38bf472a MR |
15969 | case AFL_EXT_INTERAPTIV_MR2: |
15970 | fputs ("Imagination interAptiv MR2", file); | |
15971 | break; | |
351cdf24 | 15972 | default: |
00ac7aa0 | 15973 | fprintf (file, "%s (%d)", _("Unknown"), isa_ext); |
351cdf24 MF |
15974 | break; |
15975 | } | |
15976 | } | |
15977 | ||
15978 | static void | |
15979 | print_mips_fp_abi_value (FILE *file, int val) | |
15980 | { | |
15981 | switch (val) | |
15982 | { | |
15983 | case Val_GNU_MIPS_ABI_FP_ANY: | |
15984 | fprintf (file, _("Hard or soft float\n")); | |
15985 | break; | |
15986 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
15987 | fprintf (file, _("Hard float (double precision)\n")); | |
15988 | break; | |
15989 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
15990 | fprintf (file, _("Hard float (single precision)\n")); | |
15991 | break; | |
15992 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
15993 | fprintf (file, _("Soft float\n")); | |
15994 | break; | |
15995 | case Val_GNU_MIPS_ABI_FP_OLD_64: | |
15996 | fprintf (file, _("Hard float (MIPS32r2 64-bit FPU 12 callee-saved)\n")); | |
15997 | break; | |
15998 | case Val_GNU_MIPS_ABI_FP_XX: | |
15999 | fprintf (file, _("Hard float (32-bit CPU, Any FPU)\n")); | |
16000 | break; | |
16001 | case Val_GNU_MIPS_ABI_FP_64: | |
16002 | fprintf (file, _("Hard float (32-bit CPU, 64-bit FPU)\n")); | |
16003 | break; | |
16004 | case Val_GNU_MIPS_ABI_FP_64A: | |
16005 | fprintf (file, _("Hard float compat (32-bit CPU, 64-bit FPU)\n")); | |
16006 | break; | |
16007 | default: | |
16008 | fprintf (file, "??? (%d)\n", val); | |
16009 | break; | |
16010 | } | |
16011 | } | |
16012 | ||
16013 | static int | |
16014 | get_mips_reg_size (int reg_size) | |
16015 | { | |
16016 | return (reg_size == AFL_REG_NONE) ? 0 | |
16017 | : (reg_size == AFL_REG_32) ? 32 | |
16018 | : (reg_size == AFL_REG_64) ? 64 | |
16019 | : (reg_size == AFL_REG_128) ? 128 | |
16020 | : -1; | |
16021 | } | |
16022 | ||
b34976b6 | 16023 | bfd_boolean |
9719ad41 | 16024 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 16025 | { |
9719ad41 | 16026 | FILE *file = ptr; |
b49e97c9 TS |
16027 | |
16028 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
16029 | ||
16030 | /* Print normal ELF private data. */ | |
16031 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
16032 | ||
16033 | /* xgettext:c-format */ | |
16034 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
16035 | ||
16036 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
16037 | fprintf (file, _(" [abi=O32]")); | |
16038 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
16039 | fprintf (file, _(" [abi=O64]")); | |
16040 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
16041 | fprintf (file, _(" [abi=EABI32]")); | |
16042 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
16043 | fprintf (file, _(" [abi=EABI64]")); | |
16044 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
16045 | fprintf (file, _(" [abi unknown]")); | |
16046 | else if (ABI_N32_P (abfd)) | |
16047 | fprintf (file, _(" [abi=N32]")); | |
16048 | else if (ABI_64_P (abfd)) | |
16049 | fprintf (file, _(" [abi=64]")); | |
16050 | else | |
16051 | fprintf (file, _(" [no abi set]")); | |
16052 | ||
16053 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 16054 | fprintf (file, " [mips1]"); |
b49e97c9 | 16055 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 16056 | fprintf (file, " [mips2]"); |
b49e97c9 | 16057 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 16058 | fprintf (file, " [mips3]"); |
b49e97c9 | 16059 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 16060 | fprintf (file, " [mips4]"); |
b49e97c9 | 16061 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 16062 | fprintf (file, " [mips5]"); |
b49e97c9 | 16063 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 16064 | fprintf (file, " [mips32]"); |
b49e97c9 | 16065 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 16066 | fprintf (file, " [mips64]"); |
af7ee8bf | 16067 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 16068 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 16069 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 16070 | fprintf (file, " [mips64r2]"); |
7361da2c AB |
16071 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6) |
16072 | fprintf (file, " [mips32r6]"); | |
16073 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
16074 | fprintf (file, " [mips64r6]"); | |
b49e97c9 TS |
16075 | else |
16076 | fprintf (file, _(" [unknown ISA]")); | |
16077 | ||
40d32fc6 | 16078 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 16079 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
16080 | |
16081 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 16082 | fprintf (file, " [mips16]"); |
40d32fc6 | 16083 | |
df58fc94 RS |
16084 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
16085 | fprintf (file, " [micromips]"); | |
16086 | ||
ba92f887 MR |
16087 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NAN2008) |
16088 | fprintf (file, " [nan2008]"); | |
16089 | ||
5baf5e34 | 16090 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_FP64) |
351cdf24 | 16091 | fprintf (file, " [old fp64]"); |
5baf5e34 | 16092 | |
b49e97c9 | 16093 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 16094 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
16095 | else |
16096 | fprintf (file, _(" [not 32bitmode]")); | |
16097 | ||
c0e3f241 | 16098 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 16099 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
16100 | |
16101 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 16102 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
16103 | |
16104 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 16105 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
16106 | |
16107 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 16108 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
16109 | |
16110 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 16111 | fprintf (file, " [UCODE]"); |
c0e3f241 | 16112 | |
b49e97c9 TS |
16113 | fputc ('\n', file); |
16114 | ||
351cdf24 MF |
16115 | if (mips_elf_tdata (abfd)->abiflags_valid) |
16116 | { | |
16117 | Elf_Internal_ABIFlags_v0 *abiflags = &mips_elf_tdata (abfd)->abiflags; | |
16118 | fprintf (file, "\nMIPS ABI Flags Version: %d\n", abiflags->version); | |
16119 | fprintf (file, "\nISA: MIPS%d", abiflags->isa_level); | |
16120 | if (abiflags->isa_rev > 1) | |
16121 | fprintf (file, "r%d", abiflags->isa_rev); | |
16122 | fprintf (file, "\nGPR size: %d", | |
16123 | get_mips_reg_size (abiflags->gpr_size)); | |
16124 | fprintf (file, "\nCPR1 size: %d", | |
16125 | get_mips_reg_size (abiflags->cpr1_size)); | |
16126 | fprintf (file, "\nCPR2 size: %d", | |
16127 | get_mips_reg_size (abiflags->cpr2_size)); | |
16128 | fputs ("\nFP ABI: ", file); | |
16129 | print_mips_fp_abi_value (file, abiflags->fp_abi); | |
16130 | fputs ("ISA Extension: ", file); | |
16131 | print_mips_isa_ext (file, abiflags->isa_ext); | |
16132 | fputs ("\nASEs:", file); | |
16133 | print_mips_ases (file, abiflags->ases); | |
16134 | fprintf (file, "\nFLAGS 1: %8.8lx", abiflags->flags1); | |
16135 | fprintf (file, "\nFLAGS 2: %8.8lx", abiflags->flags2); | |
16136 | fputc ('\n', file); | |
16137 | } | |
16138 | ||
b34976b6 | 16139 | return TRUE; |
b49e97c9 | 16140 | } |
2f89ff8d | 16141 | |
b35d266b | 16142 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 16143 | { |
07d6d2b8 AM |
16144 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
16145 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
0112cd26 | 16146 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, |
07d6d2b8 | 16147 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
0112cd26 NC |
16148 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
16149 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
07d6d2b8 | 16150 | { NULL, 0, 0, 0, 0 } |
2f89ff8d | 16151 | }; |
5e2b0d47 | 16152 | |
8992f0d7 TS |
16153 | /* Merge non visibility st_other attributes. Ensure that the |
16154 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
16155 | definiton of the symbol. */ | |
5e2b0d47 NC |
16156 | void |
16157 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
16158 | const Elf_Internal_Sym *isym, | |
16159 | bfd_boolean definition, | |
16160 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
16161 | { | |
8992f0d7 TS |
16162 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
16163 | { | |
16164 | unsigned char other; | |
16165 | ||
16166 | other = (definition ? isym->st_other : h->other); | |
16167 | other &= ~ELF_ST_VISIBILITY (-1); | |
16168 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
16169 | } | |
16170 | ||
16171 | if (!definition | |
5e2b0d47 NC |
16172 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
16173 | h->other |= STO_OPTIONAL; | |
16174 | } | |
12ac1cf5 NC |
16175 | |
16176 | /* Decide whether an undefined symbol is special and can be ignored. | |
16177 | This is the case for OPTIONAL symbols on IRIX. */ | |
16178 | bfd_boolean | |
16179 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
16180 | { | |
16181 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
16182 | } | |
e0764319 NC |
16183 | |
16184 | bfd_boolean | |
16185 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
16186 | { | |
16187 | return (sym->st_shndx == SHN_COMMON | |
16188 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
16189 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
16190 | } | |
861fb55a DJ |
16191 | |
16192 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
16193 | or (bfd_vma) -1 if it should not be included. */ | |
16194 | ||
16195 | bfd_vma | |
16196 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
16197 | const arelent *rel ATTRIBUTE_UNUSED) | |
16198 | { | |
16199 | return (plt->vma | |
16200 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
16201 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
16202 | } | |
16203 | ||
1bbce132 MR |
16204 | /* Build a table of synthetic symbols to represent the PLT. As with MIPS16 |
16205 | and microMIPS PLT slots we may have a many-to-one mapping between .plt | |
16206 | and .got.plt and also the slots may be of a different size each we walk | |
16207 | the PLT manually fetching instructions and matching them against known | |
16208 | patterns. To make things easier standard MIPS slots, if any, always come | |
16209 | first. As we don't create proper ELF symbols we use the UDATA.I member | |
16210 | of ASYMBOL to carry ISA annotation. The encoding used is the same as | |
16211 | with the ST_OTHER member of the ELF symbol. */ | |
16212 | ||
16213 | long | |
16214 | _bfd_mips_elf_get_synthetic_symtab (bfd *abfd, | |
16215 | long symcount ATTRIBUTE_UNUSED, | |
16216 | asymbol **syms ATTRIBUTE_UNUSED, | |
16217 | long dynsymcount, asymbol **dynsyms, | |
16218 | asymbol **ret) | |
16219 | { | |
16220 | static const char pltname[] = "_PROCEDURE_LINKAGE_TABLE_"; | |
16221 | static const char microsuffix[] = "@micromipsplt"; | |
16222 | static const char m16suffix[] = "@mips16plt"; | |
16223 | static const char mipssuffix[] = "@plt"; | |
16224 | ||
16225 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
16226 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
16227 | bfd_boolean micromips_p = MICROMIPS_P (abfd); | |
16228 | Elf_Internal_Shdr *hdr; | |
16229 | bfd_byte *plt_data; | |
16230 | bfd_vma plt_offset; | |
16231 | unsigned int other; | |
16232 | bfd_vma entry_size; | |
16233 | bfd_vma plt0_size; | |
16234 | asection *relplt; | |
16235 | bfd_vma opcode; | |
16236 | asection *plt; | |
16237 | asymbol *send; | |
16238 | size_t size; | |
16239 | char *names; | |
16240 | long counti; | |
16241 | arelent *p; | |
16242 | asymbol *s; | |
16243 | char *nend; | |
16244 | long count; | |
16245 | long pi; | |
16246 | long i; | |
16247 | long n; | |
16248 | ||
16249 | *ret = NULL; | |
16250 | ||
16251 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 || dynsymcount <= 0) | |
16252 | return 0; | |
16253 | ||
16254 | relplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
16255 | if (relplt == NULL) | |
16256 | return 0; | |
16257 | ||
16258 | hdr = &elf_section_data (relplt)->this_hdr; | |
16259 | if (hdr->sh_link != elf_dynsymtab (abfd) || hdr->sh_type != SHT_REL) | |
16260 | return 0; | |
16261 | ||
16262 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
16263 | if (plt == NULL) | |
16264 | return 0; | |
16265 | ||
16266 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
16267 | if (!(*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
16268 | return -1; | |
16269 | p = relplt->relocation; | |
16270 | ||
16271 | /* Calculating the exact amount of space required for symbols would | |
16272 | require two passes over the PLT, so just pessimise assuming two | |
16273 | PLT slots per relocation. */ | |
16274 | count = relplt->size / hdr->sh_entsize; | |
16275 | counti = count * bed->s->int_rels_per_ext_rel; | |
16276 | size = 2 * count * sizeof (asymbol); | |
16277 | size += count * (sizeof (mipssuffix) + | |
16278 | (micromips_p ? sizeof (microsuffix) : sizeof (m16suffix))); | |
16279 | for (pi = 0; pi < counti; pi += bed->s->int_rels_per_ext_rel) | |
16280 | size += 2 * strlen ((*p[pi].sym_ptr_ptr)->name); | |
16281 | ||
16282 | /* Add the size of "_PROCEDURE_LINKAGE_TABLE_" too. */ | |
16283 | size += sizeof (asymbol) + sizeof (pltname); | |
16284 | ||
16285 | if (!bfd_malloc_and_get_section (abfd, plt, &plt_data)) | |
16286 | return -1; | |
16287 | ||
16288 | if (plt->size < 16) | |
16289 | return -1; | |
16290 | ||
16291 | s = *ret = bfd_malloc (size); | |
16292 | if (s == NULL) | |
16293 | return -1; | |
16294 | send = s + 2 * count + 1; | |
16295 | ||
16296 | names = (char *) send; | |
16297 | nend = (char *) s + size; | |
16298 | n = 0; | |
16299 | ||
16300 | opcode = bfd_get_micromips_32 (abfd, plt_data + 12); | |
16301 | if (opcode == 0x3302fffe) | |
16302 | { | |
16303 | if (!micromips_p) | |
16304 | return -1; | |
16305 | plt0_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
16306 | other = STO_MICROMIPS; | |
16307 | } | |
833794fc MR |
16308 | else if (opcode == 0x0398c1d0) |
16309 | { | |
16310 | if (!micromips_p) | |
16311 | return -1; | |
16312 | plt0_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
16313 | other = STO_MICROMIPS; | |
16314 | } | |
1bbce132 MR |
16315 | else |
16316 | { | |
16317 | plt0_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
16318 | other = 0; | |
16319 | } | |
16320 | ||
16321 | s->the_bfd = abfd; | |
16322 | s->flags = BSF_SYNTHETIC | BSF_FUNCTION | BSF_LOCAL; | |
16323 | s->section = plt; | |
16324 | s->value = 0; | |
16325 | s->name = names; | |
16326 | s->udata.i = other; | |
16327 | memcpy (names, pltname, sizeof (pltname)); | |
16328 | names += sizeof (pltname); | |
16329 | ++s, ++n; | |
16330 | ||
16331 | pi = 0; | |
16332 | for (plt_offset = plt0_size; | |
16333 | plt_offset + 8 <= plt->size && s < send; | |
16334 | plt_offset += entry_size) | |
16335 | { | |
16336 | bfd_vma gotplt_addr; | |
16337 | const char *suffix; | |
16338 | bfd_vma gotplt_hi; | |
16339 | bfd_vma gotplt_lo; | |
16340 | size_t suffixlen; | |
16341 | ||
16342 | opcode = bfd_get_micromips_32 (abfd, plt_data + plt_offset + 4); | |
16343 | ||
16344 | /* Check if the second word matches the expected MIPS16 instruction. */ | |
16345 | if (opcode == 0x651aeb00) | |
16346 | { | |
16347 | if (micromips_p) | |
16348 | return -1; | |
16349 | /* Truncated table??? */ | |
16350 | if (plt_offset + 16 > plt->size) | |
16351 | break; | |
16352 | gotplt_addr = bfd_get_32 (abfd, plt_data + plt_offset + 12); | |
16353 | entry_size = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); | |
16354 | suffixlen = sizeof (m16suffix); | |
16355 | suffix = m16suffix; | |
16356 | other = STO_MIPS16; | |
16357 | } | |
833794fc | 16358 | /* Likewise the expected microMIPS instruction (no insn32 mode). */ |
1bbce132 MR |
16359 | else if (opcode == 0xff220000) |
16360 | { | |
16361 | if (!micromips_p) | |
16362 | return -1; | |
16363 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset) & 0x7f; | |
16364 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16365 | gotplt_hi = ((gotplt_hi ^ 0x40) - 0x40) << 18; | |
16366 | gotplt_lo <<= 2; | |
16367 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16368 | gotplt_addr += ((plt->vma + plt_offset) | 3) ^ 3; | |
16369 | entry_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); | |
16370 | suffixlen = sizeof (microsuffix); | |
16371 | suffix = microsuffix; | |
16372 | other = STO_MICROMIPS; | |
16373 | } | |
833794fc MR |
16374 | /* Likewise the expected microMIPS instruction (insn32 mode). */ |
16375 | else if ((opcode & 0xffff0000) == 0xff2f0000) | |
16376 | { | |
16377 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16378 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 6) & 0xffff; | |
16379 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16380 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16381 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16382 | entry_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
16383 | suffixlen = sizeof (microsuffix); | |
16384 | suffix = microsuffix; | |
16385 | other = STO_MICROMIPS; | |
16386 | } | |
1bbce132 MR |
16387 | /* Otherwise assume standard MIPS code. */ |
16388 | else | |
16389 | { | |
16390 | gotplt_hi = bfd_get_32 (abfd, plt_data + plt_offset) & 0xffff; | |
16391 | gotplt_lo = bfd_get_32 (abfd, plt_data + plt_offset + 4) & 0xffff; | |
16392 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16393 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16394 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16395 | entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
16396 | suffixlen = sizeof (mipssuffix); | |
16397 | suffix = mipssuffix; | |
16398 | other = 0; | |
16399 | } | |
16400 | /* Truncated table??? */ | |
16401 | if (plt_offset + entry_size > plt->size) | |
16402 | break; | |
16403 | ||
16404 | for (i = 0; | |
16405 | i < count && p[pi].address != gotplt_addr; | |
16406 | i++, pi = (pi + bed->s->int_rels_per_ext_rel) % counti); | |
16407 | ||
16408 | if (i < count) | |
16409 | { | |
16410 | size_t namelen; | |
16411 | size_t len; | |
16412 | ||
16413 | *s = **p[pi].sym_ptr_ptr; | |
16414 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
16415 | we are defining a symbol, ensure one of them is set. */ | |
16416 | if ((s->flags & BSF_LOCAL) == 0) | |
16417 | s->flags |= BSF_GLOBAL; | |
16418 | s->flags |= BSF_SYNTHETIC; | |
16419 | s->section = plt; | |
16420 | s->value = plt_offset; | |
16421 | s->name = names; | |
16422 | s->udata.i = other; | |
16423 | ||
16424 | len = strlen ((*p[pi].sym_ptr_ptr)->name); | |
16425 | namelen = len + suffixlen; | |
16426 | if (names + namelen > nend) | |
16427 | break; | |
16428 | ||
16429 | memcpy (names, (*p[pi].sym_ptr_ptr)->name, len); | |
16430 | names += len; | |
16431 | memcpy (names, suffix, suffixlen); | |
16432 | names += suffixlen; | |
16433 | ||
16434 | ++s, ++n; | |
16435 | pi = (pi + bed->s->int_rels_per_ext_rel) % counti; | |
16436 | } | |
16437 | } | |
16438 | ||
16439 | free (plt_data); | |
16440 | ||
16441 | return n; | |
16442 | } | |
16443 | ||
5e7fc731 MR |
16444 | /* Return the ABI flags associated with ABFD if available. */ |
16445 | ||
16446 | Elf_Internal_ABIFlags_v0 * | |
16447 | bfd_mips_elf_get_abiflags (bfd *abfd) | |
16448 | { | |
16449 | struct mips_elf_obj_tdata *tdata = mips_elf_tdata (abfd); | |
16450 | ||
16451 | return tdata->abiflags_valid ? &tdata->abiflags : NULL; | |
16452 | } | |
16453 | ||
bb29b84d MR |
16454 | /* MIPS libc ABI versions, used with the EI_ABIVERSION ELF file header |
16455 | field. Taken from `libc-abis.h' generated at GNU libc build time. | |
16456 | Using a MIPS_ prefix as other libc targets use different values. */ | |
16457 | enum | |
16458 | { | |
16459 | MIPS_LIBC_ABI_DEFAULT = 0, | |
16460 | MIPS_LIBC_ABI_MIPS_PLT, | |
16461 | MIPS_LIBC_ABI_UNIQUE, | |
16462 | MIPS_LIBC_ABI_MIPS_O32_FP64, | |
47275900 | 16463 | MIPS_LIBC_ABI_ABSOLUTE, |
bb29b84d MR |
16464 | MIPS_LIBC_ABI_MAX |
16465 | }; | |
16466 | ||
861fb55a DJ |
16467 | void |
16468 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
16469 | { | |
47275900 | 16470 | struct mips_elf_link_hash_table *htab = NULL; |
861fb55a DJ |
16471 | Elf_Internal_Ehdr *i_ehdrp; |
16472 | ||
16473 | i_ehdrp = elf_elfheader (abfd); | |
16474 | if (link_info) | |
16475 | { | |
16476 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 | 16477 | BFD_ASSERT (htab != NULL); |
861fb55a | 16478 | } |
0af03126 | 16479 | |
47275900 MR |
16480 | if (htab != NULL && htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
16481 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_PLT; | |
16482 | ||
351cdf24 MF |
16483 | if (mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64 |
16484 | || mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
bb29b84d | 16485 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_O32_FP64; |
334cd8a7 | 16486 | |
47275900 MR |
16487 | /* Mark that we need support for absolute symbols in the dynamic loader. */ |
16488 | if (htab != NULL && htab->use_absolute_zero && htab->gnu_target) | |
16489 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_ABSOLUTE; | |
16490 | ||
334cd8a7 | 16491 | _bfd_elf_post_process_headers (abfd, link_info); |
861fb55a | 16492 | } |
2f0c68f2 CM |
16493 | |
16494 | int | |
1ced1a5f MR |
16495 | _bfd_mips_elf_compact_eh_encoding |
16496 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16497 | { |
16498 | return DW_EH_PE_pcrel | DW_EH_PE_sdata4; | |
16499 | } | |
16500 | ||
16501 | /* Return the opcode for can't unwind. */ | |
16502 | ||
16503 | int | |
1ced1a5f MR |
16504 | _bfd_mips_elf_cant_unwind_opcode |
16505 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16506 | { |
16507 | return COMPACT_EH_CANT_UNWIND_OPCODE; | |
16508 | } |