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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 | |
0a44bf69 RS |
458 | /* Shortcuts to some dynamic sections, or NULL if they are not |
459 | being used. */ | |
0a44bf69 | 460 | asection *srelplt2; |
4e41d0d7 | 461 | asection *sstubs; |
861fb55a | 462 | |
a8028dd0 RS |
463 | /* The master GOT information. */ |
464 | struct mips_got_info *got_info; | |
861fb55a | 465 | |
d222d210 RS |
466 | /* The global symbol in the GOT with the lowest index in the dynamic |
467 | symbol table. */ | |
468 | struct elf_link_hash_entry *global_gotsym; | |
469 | ||
861fb55a | 470 | /* The size of the PLT header in bytes. */ |
0a44bf69 | 471 | bfd_vma plt_header_size; |
861fb55a | 472 | |
1bbce132 MR |
473 | /* The size of a standard PLT entry in bytes. */ |
474 | bfd_vma plt_mips_entry_size; | |
475 | ||
476 | /* The size of a compressed PLT entry in bytes. */ | |
477 | bfd_vma plt_comp_entry_size; | |
478 | ||
479 | /* The offset of the next standard PLT entry to create. */ | |
480 | bfd_vma plt_mips_offset; | |
481 | ||
482 | /* The offset of the next compressed PLT entry to create. */ | |
483 | bfd_vma plt_comp_offset; | |
484 | ||
485 | /* The index of the next .got.plt entry to create. */ | |
486 | bfd_vma plt_got_index; | |
861fb55a | 487 | |
33bb52fb RS |
488 | /* The number of functions that need a lazy-binding stub. */ |
489 | bfd_vma lazy_stub_count; | |
861fb55a | 490 | |
5108fc1b RS |
491 | /* The size of a function stub entry in bytes. */ |
492 | bfd_vma function_stub_size; | |
861fb55a DJ |
493 | |
494 | /* The number of reserved entries at the beginning of the GOT. */ | |
495 | unsigned int reserved_gotno; | |
496 | ||
497 | /* The section used for mips_elf_la25_stub trampolines. | |
498 | See the comment above that structure for details. */ | |
499 | asection *strampoline; | |
500 | ||
501 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
502 | pairs. */ | |
503 | htab_t la25_stubs; | |
504 | ||
505 | /* A function FN (NAME, IS, OS) that creates a new input section | |
506 | called NAME and links it to output section OS. If IS is nonnull, | |
507 | the new section should go immediately before it, otherwise it | |
508 | should go at the (current) beginning of OS. | |
509 | ||
510 | The function returns the new section on success, otherwise it | |
511 | returns null. */ | |
512 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
13db6b44 RS |
513 | |
514 | /* Small local sym cache. */ | |
515 | struct sym_cache sym_cache; | |
1bbce132 MR |
516 | |
517 | /* Is the PLT header compressed? */ | |
518 | unsigned int plt_header_is_comp : 1; | |
861fb55a DJ |
519 | }; |
520 | ||
4dfe6ac6 NC |
521 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
522 | ||
523 | #define mips_elf_hash_table(p) \ | |
524 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
525 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
526 | ||
861fb55a | 527 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
528 | struct mips_htab_traverse_info |
529 | { | |
861fb55a DJ |
530 | /* The usual link-wide information. */ |
531 | struct bfd_link_info *info; | |
532 | bfd *output_bfd; | |
533 | ||
534 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
535 | bfd_boolean error; | |
b49e97c9 TS |
536 | }; |
537 | ||
6ae68ba3 MR |
538 | /* MIPS ELF private object data. */ |
539 | ||
540 | struct mips_elf_obj_tdata | |
541 | { | |
542 | /* Generic ELF private object data. */ | |
543 | struct elf_obj_tdata root; | |
544 | ||
545 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
546 | bfd *abi_fp_bfd; | |
ee227692 | 547 | |
b60bf9be CF |
548 | /* Input BFD providing Tag_GNU_MIPS_ABI_MSA attribute for output. */ |
549 | bfd *abi_msa_bfd; | |
550 | ||
351cdf24 MF |
551 | /* The abiflags for this object. */ |
552 | Elf_Internal_ABIFlags_v0 abiflags; | |
553 | bfd_boolean abiflags_valid; | |
554 | ||
ee227692 RS |
555 | /* The GOT requirements of input bfds. */ |
556 | struct mips_got_info *got; | |
698600e4 AM |
557 | |
558 | /* Used by _bfd_mips_elf_find_nearest_line. The structure could be | |
559 | included directly in this one, but there's no point to wasting | |
560 | the memory just for the infrequently called find_nearest_line. */ | |
561 | struct mips_elf_find_line *find_line_info; | |
562 | ||
563 | /* An array of stub sections indexed by symbol number. */ | |
564 | asection **local_stubs; | |
565 | asection **local_call_stubs; | |
566 | ||
567 | /* The Irix 5 support uses two virtual sections, which represent | |
568 | text/data symbols defined in dynamic objects. */ | |
569 | asymbol *elf_data_symbol; | |
570 | asymbol *elf_text_symbol; | |
571 | asection *elf_data_section; | |
572 | asection *elf_text_section; | |
6ae68ba3 MR |
573 | }; |
574 | ||
575 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
576 | ||
577 | #define mips_elf_tdata(bfd) \ | |
578 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
579 | ||
0f20cc35 DJ |
580 | #define TLS_RELOC_P(r_type) \ |
581 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
582 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
583 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
584 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
585 | || r_type == R_MIPS_TLS_GD \ | |
586 | || r_type == R_MIPS_TLS_LDM \ | |
587 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
588 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
589 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
590 | || r_type == R_MIPS_TLS_TPREL32 \ | |
591 | || r_type == R_MIPS_TLS_TPREL64 \ | |
592 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 593 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
594 | || r_type == R_MIPS16_TLS_GD \ |
595 | || r_type == R_MIPS16_TLS_LDM \ | |
596 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
597 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
598 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
599 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
600 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
601 | || r_type == R_MICROMIPS_TLS_GD \ |
602 | || r_type == R_MICROMIPS_TLS_LDM \ | |
603 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
604 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
605 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
606 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
607 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 608 | |
b49e97c9 TS |
609 | /* Structure used to pass information to mips_elf_output_extsym. */ |
610 | ||
611 | struct extsym_info | |
612 | { | |
9e4aeb93 RS |
613 | bfd *abfd; |
614 | struct bfd_link_info *info; | |
b49e97c9 TS |
615 | struct ecoff_debug_info *debug; |
616 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 617 | bfd_boolean failed; |
b49e97c9 TS |
618 | }; |
619 | ||
8dc1a139 | 620 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
621 | |
622 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
623 | { | |
624 | "_procedure_table", | |
625 | "_procedure_string_table", | |
626 | "_procedure_table_size", | |
627 | NULL | |
628 | }; | |
629 | ||
630 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 631 | IRIX5. */ |
b49e97c9 TS |
632 | |
633 | typedef struct | |
634 | { | |
635 | unsigned long id1; /* Always one? */ | |
636 | unsigned long num; /* Number of compact relocation entries. */ | |
637 | unsigned long id2; /* Always two? */ | |
638 | unsigned long offset; /* The file offset of the first relocation. */ | |
639 | unsigned long reserved0; /* Zero? */ | |
640 | unsigned long reserved1; /* Zero? */ | |
641 | } Elf32_compact_rel; | |
642 | ||
643 | typedef struct | |
644 | { | |
645 | bfd_byte id1[4]; | |
646 | bfd_byte num[4]; | |
647 | bfd_byte id2[4]; | |
648 | bfd_byte offset[4]; | |
649 | bfd_byte reserved0[4]; | |
650 | bfd_byte reserved1[4]; | |
651 | } Elf32_External_compact_rel; | |
652 | ||
653 | typedef struct | |
654 | { | |
655 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
656 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
657 | unsigned int dist2to : 8; | |
658 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
659 | unsigned long konst; /* KONST field. See below. */ | |
660 | unsigned long vaddr; /* VADDR to be relocated. */ | |
661 | } Elf32_crinfo; | |
662 | ||
663 | typedef struct | |
664 | { | |
665 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
666 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
667 | unsigned int dist2to : 8; | |
668 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
669 | unsigned long konst; /* KONST field. See below. */ | |
670 | } Elf32_crinfo2; | |
671 | ||
672 | typedef struct | |
673 | { | |
674 | bfd_byte info[4]; | |
675 | bfd_byte konst[4]; | |
676 | bfd_byte vaddr[4]; | |
677 | } Elf32_External_crinfo; | |
678 | ||
679 | typedef struct | |
680 | { | |
681 | bfd_byte info[4]; | |
682 | bfd_byte konst[4]; | |
683 | } Elf32_External_crinfo2; | |
684 | ||
685 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
686 | ||
687 | #define CRINFO_CTYPE (0x1) | |
688 | #define CRINFO_CTYPE_SH (31) | |
689 | #define CRINFO_RTYPE (0xf) | |
690 | #define CRINFO_RTYPE_SH (27) | |
691 | #define CRINFO_DIST2TO (0xff) | |
692 | #define CRINFO_DIST2TO_SH (19) | |
693 | #define CRINFO_RELVADDR (0x7ffff) | |
694 | #define CRINFO_RELVADDR_SH (0) | |
695 | ||
696 | /* A compact relocation info has long (3 words) or short (2 words) | |
697 | formats. A short format doesn't have VADDR field and relvaddr | |
698 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
699 | #define CRF_MIPS_LONG 1 | |
700 | #define CRF_MIPS_SHORT 0 | |
701 | ||
702 | /* There are 4 types of compact relocation at least. The value KONST | |
703 | has different meaning for each type: | |
704 | ||
705 | (type) (konst) | |
706 | CT_MIPS_REL32 Address in data | |
707 | CT_MIPS_WORD Address in word (XXX) | |
708 | CT_MIPS_GPHI_LO GP - vaddr | |
709 | CT_MIPS_JMPAD Address to jump | |
710 | */ | |
711 | ||
712 | #define CRT_MIPS_REL32 0xa | |
713 | #define CRT_MIPS_WORD 0xb | |
714 | #define CRT_MIPS_GPHI_LO 0xc | |
715 | #define CRT_MIPS_JMPAD 0xd | |
716 | ||
717 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
718 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
719 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
720 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
721 | \f | |
722 | /* The structure of the runtime procedure descriptor created by the | |
723 | loader for use by the static exception system. */ | |
724 | ||
725 | typedef struct runtime_pdr { | |
ae9a127f NC |
726 | bfd_vma adr; /* Memory address of start of procedure. */ |
727 | long regmask; /* Save register mask. */ | |
728 | long regoffset; /* Save register offset. */ | |
729 | long fregmask; /* Save floating point register mask. */ | |
730 | long fregoffset; /* Save floating point register offset. */ | |
731 | long frameoffset; /* Frame size. */ | |
732 | short framereg; /* Frame pointer register. */ | |
733 | short pcreg; /* Offset or reg of return pc. */ | |
734 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 735 | long reserved; |
ae9a127f | 736 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
737 | } RPDR, *pRPDR; |
738 | #define cbRPDR sizeof (RPDR) | |
739 | #define rpdNil ((pRPDR) 0) | |
740 | \f | |
b15e6682 | 741 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
742 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
743 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 744 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 745 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
746 | static bfd_vma mips_elf_high |
747 | (bfd_vma); | |
b34976b6 | 748 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
749 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
750 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
751 | bfd_vma *, asection *); | |
f4416af6 | 752 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 753 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 754 | |
b49e97c9 TS |
755 | /* This will be used when we sort the dynamic relocation records. */ |
756 | static bfd *reldyn_sorting_bfd; | |
757 | ||
6d30f5b2 NC |
758 | /* True if ABFD is for CPUs with load interlocking that include |
759 | non-MIPS1 CPUs and R3900. */ | |
760 | #define LOAD_INTERLOCKS_P(abfd) \ | |
761 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
762 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
763 | ||
cd8d5a82 CF |
764 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
765 | This should be safe for all architectures. We enable this predicate | |
766 | for RM9000 for now. */ | |
767 | #define JAL_TO_BAL_P(abfd) \ | |
768 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
769 | ||
770 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
771 | This should be safe for all architectures. We enable this predicate for | |
772 | all CPUs. */ | |
773 | #define JALR_TO_BAL_P(abfd) 1 | |
774 | ||
38a7df63 CF |
775 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
776 | This should be safe for all architectures. We enable this predicate for | |
777 | all CPUs. */ | |
778 | #define JR_TO_B_P(abfd) 1 | |
779 | ||
861fb55a DJ |
780 | /* True if ABFD is a PIC object. */ |
781 | #define PIC_OBJECT_P(abfd) \ | |
782 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
783 | ||
351cdf24 MF |
784 | /* Nonzero if ABFD is using the O32 ABI. */ |
785 | #define ABI_O32_P(abfd) \ | |
786 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
787 | ||
b49e97c9 | 788 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
789 | #define ABI_N32_P(abfd) \ |
790 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
791 | ||
4a14403c | 792 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 793 | #define ABI_64_P(abfd) \ |
141ff970 | 794 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 795 | |
4a14403c TS |
796 | /* Nonzero if ABFD is using NewABI conventions. */ |
797 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
798 | ||
e8faf7d1 MR |
799 | /* Nonzero if ABFD has microMIPS code. */ |
800 | #define MICROMIPS_P(abfd) \ | |
801 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0) | |
802 | ||
7361da2c AB |
803 | /* Nonzero if ABFD is MIPS R6. */ |
804 | #define MIPSR6_P(abfd) \ | |
805 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6 \ | |
806 | || (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
807 | ||
4a14403c | 808 | /* The IRIX compatibility level we are striving for. */ |
b49e97c9 TS |
809 | #define IRIX_COMPAT(abfd) \ |
810 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
811 | ||
b49e97c9 TS |
812 | /* Whether we are trying to be compatible with IRIX at all. */ |
813 | #define SGI_COMPAT(abfd) \ | |
814 | (IRIX_COMPAT (abfd) != ict_none) | |
815 | ||
816 | /* The name of the options section. */ | |
817 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 818 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 819 | |
cc2e31b9 RS |
820 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
821 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
822 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
823 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
824 | ||
351cdf24 MF |
825 | /* True if NAME is the recognized name of any SHT_MIPS_ABIFLAGS section. */ |
826 | #define MIPS_ELF_ABIFLAGS_SECTION_NAME_P(NAME) \ | |
827 | (strcmp (NAME, ".MIPS.abiflags") == 0) | |
828 | ||
943284cc DJ |
829 | /* Whether the section is readonly. */ |
830 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
831 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
832 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
833 | ||
b49e97c9 | 834 | /* The name of the stub section. */ |
ca07892d | 835 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
836 | |
837 | /* The size of an external REL relocation. */ | |
838 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
839 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
840 | ||
0a44bf69 RS |
841 | /* The size of an external RELA relocation. */ |
842 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
843 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
844 | ||
b49e97c9 TS |
845 | /* The size of an external dynamic table entry. */ |
846 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
847 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
848 | ||
849 | /* The size of a GOT entry. */ | |
850 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
851 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
852 | ||
b4082c70 DD |
853 | /* The size of the .rld_map section. */ |
854 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
855 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
856 | ||
b49e97c9 TS |
857 | /* The size of a symbol-table entry. */ |
858 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
859 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
860 | ||
861 | /* The default alignment for sections, as a power of two. */ | |
862 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 863 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
864 | |
865 | /* Get word-sized data. */ | |
866 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
867 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
868 | ||
869 | /* Put out word-sized data. */ | |
870 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
07d6d2b8 AM |
871 | (ABI_64_P (abfd) \ |
872 | ? bfd_put_64 (abfd, val, ptr) \ | |
b49e97c9 TS |
873 | : bfd_put_32 (abfd, val, ptr)) |
874 | ||
861fb55a DJ |
875 | /* The opcode for word-sized loads (LW or LD). */ |
876 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
877 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
878 | ||
b49e97c9 | 879 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 880 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 881 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
882 | |
883 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
0aa13fee | 884 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (abfd, rtype, rela)) |
b49e97c9 | 885 | |
0a44bf69 RS |
886 | /* The name of the dynamic relocation section. */ |
887 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
888 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
889 | ||
b49e97c9 TS |
890 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
891 | from smaller values. Start with zero, widen, *then* decrement. */ | |
892 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 893 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 894 | |
51e38d68 RS |
895 | /* The value to write into got[1] for SVR4 targets, to identify it is |
896 | a GNU object. The dynamic linker can then use got[1] to store the | |
897 | module pointer. */ | |
898 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
899 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
900 | ||
f4416af6 | 901 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
902 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
903 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
904 | |
905 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
906 | offsets from $gp. */ | |
0a44bf69 | 907 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 908 | |
6a691779 | 909 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
910 | #define STUB_LW(abfd) \ |
911 | ((ABI_64_P (abfd) \ | |
912 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
07d6d2b8 | 913 | : 0x8f998010)) /* lw t9,0x8010(gp) */ |
40fc1451 | 914 | #define STUB_MOVE 0x03e07825 /* or t7,ra,zero */ |
3d6746ca | 915 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ |
a18a2a34 | 916 | #define STUB_JALR 0x0320f809 /* jalr ra,t9 */ |
5108fc1b RS |
917 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
918 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
919 | #define STUB_LI16S(abfd, VAL) \ |
920 | ((ABI_64_P (abfd) \ | |
921 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
922 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
923 | ||
1bbce132 MR |
924 | /* Likewise for the microMIPS ASE. */ |
925 | #define STUB_LW_MICROMIPS(abfd) \ | |
926 | (ABI_64_P (abfd) \ | |
927 | ? 0xdf3c8010 /* ld t9,0x8010(gp) */ \ | |
928 | : 0xff3c8010) /* lw t9,0x8010(gp) */ | |
929 | #define STUB_MOVE_MICROMIPS 0x0dff /* move t7,ra */ | |
40fc1451 | 930 | #define STUB_MOVE32_MICROMIPS 0x001f7a90 /* or t7,ra,zero */ |
1bbce132 MR |
931 | #define STUB_LUI_MICROMIPS(VAL) \ |
932 | (0x41b80000 + (VAL)) /* lui t8,VAL */ | |
933 | #define STUB_JALR_MICROMIPS 0x45d9 /* jalr t9 */ | |
833794fc | 934 | #define STUB_JALR32_MICROMIPS 0x03f90f3c /* jalr ra,t9 */ |
1bbce132 MR |
935 | #define STUB_ORI_MICROMIPS(VAL) \ |
936 | (0x53180000 + (VAL)) /* ori t8,t8,VAL */ | |
937 | #define STUB_LI16U_MICROMIPS(VAL) \ | |
938 | (0x53000000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
939 | #define STUB_LI16S_MICROMIPS(abfd, VAL) \ | |
940 | (ABI_64_P (abfd) \ | |
941 | ? 0x5f000000 + (VAL) /* daddiu t8,zero,VAL sign extended */ \ | |
942 | : 0x33000000 + (VAL)) /* addiu t8,zero,VAL sign extended */ | |
943 | ||
5108fc1b RS |
944 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
945 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
1bbce132 MR |
946 | #define MICROMIPS_FUNCTION_STUB_NORMAL_SIZE 12 |
947 | #define MICROMIPS_FUNCTION_STUB_BIG_SIZE 16 | |
833794fc MR |
948 | #define MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE 16 |
949 | #define MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
950 | |
951 | /* The name of the dynamic interpreter. This is put in the .interp | |
952 | section. */ | |
953 | ||
07d6d2b8 AM |
954 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ |
955 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
956 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
b49e97c9 TS |
957 | : "/usr/lib/libc.so.1") |
958 | ||
959 | #ifdef BFD64 | |
ee6423ed AO |
960 | #define MNAME(bfd,pre,pos) \ |
961 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
962 | #define ELF_R_SYM(bfd, i) \ |
963 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
964 | #define ELF_R_TYPE(bfd, i) \ | |
965 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
966 | #define ELF_R_INFO(bfd, s, t) \ | |
967 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
968 | #else | |
ee6423ed | 969 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
970 | #define ELF_R_SYM(bfd, i) \ |
971 | (ELF32_R_SYM (i)) | |
972 | #define ELF_R_TYPE(bfd, i) \ | |
973 | (ELF32_R_TYPE (i)) | |
974 | #define ELF_R_INFO(bfd, s, t) \ | |
975 | (ELF32_R_INFO (s, t)) | |
976 | #endif | |
977 | \f | |
978 | /* The mips16 compiler uses a couple of special sections to handle | |
979 | floating point arguments. | |
980 | ||
981 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
982 | copy floating point arguments from the fp regs to the gp regs and | |
983 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
984 | call should be redirected to the stub instead. If no 32 bit | |
985 | function calls FNNAME, the stub should be discarded. We need to | |
986 | consider any reference to the function, not just a call, because | |
987 | if the address of the function is taken we will need the stub, | |
988 | since the address might be passed to a 32 bit function. | |
989 | ||
990 | Section names that look like .mips16.call.FNNAME contain stubs | |
991 | that copy floating point arguments from the gp regs to the fp | |
992 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
993 | then any 16 bit function that calls FNNAME should be redirected | |
994 | to the stub instead. If FNNAME is not a 32 bit function, the | |
995 | stub should be discarded. | |
996 | ||
997 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
998 | which call FNNAME and then copy the return value from the fp regs | |
999 | to the gp regs. These stubs store the return value in $18 while | |
1000 | calling FNNAME; any function which might call one of these stubs | |
1001 | must arrange to save $18 around the call. (This case is not | |
1002 | needed for 32 bit functions that call 16 bit functions, because | |
1003 | 16 bit functions always return floating point values in both | |
1004 | $f0/$f1 and $2/$3.) | |
1005 | ||
1006 | Note that in all cases FNNAME might be defined statically. | |
1007 | Therefore, FNNAME is not used literally. Instead, the relocation | |
1008 | information will indicate which symbol the section is for. | |
1009 | ||
1010 | We record any stubs that we find in the symbol table. */ | |
1011 | ||
1012 | #define FN_STUB ".mips16.fn." | |
1013 | #define CALL_STUB ".mips16.call." | |
1014 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
1015 | |
1016 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
1017 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
1018 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 1019 | \f |
861fb55a | 1020 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
1021 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
1022 | { | |
861fb55a DJ |
1023 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
1024 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1025 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1026 | 0x031cc023, /* subu $24, $24, $28 */ | |
40fc1451 | 1027 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1028 | 0x0018c082, /* srl $24, $24, 2 */ |
1029 | 0x0320f809, /* jalr $25 */ | |
1030 | 0x2718fffe /* subu $24, $24, 2 */ | |
1031 | }; | |
1032 | ||
1033 | /* The format of the first PLT entry in an N32 executable. Different | |
1034 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
1035 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
1036 | { | |
861fb55a DJ |
1037 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1038 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
1039 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1040 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1041 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1042 | 0x0018c082, /* srl $24, $24, 2 */ |
1043 | 0x0320f809, /* jalr $25 */ | |
1044 | 0x2718fffe /* subu $24, $24, 2 */ | |
1045 | }; | |
1046 | ||
1047 | /* The format of the first PLT entry in an N64 executable. Different | |
1048 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
1049 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
1050 | { | |
861fb55a DJ |
1051 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1052 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
1053 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1054 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1055 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1056 | 0x0018c0c2, /* srl $24, $24, 3 */ |
1057 | 0x0320f809, /* jalr $25 */ | |
1058 | 0x2718fffe /* subu $24, $24, 2 */ | |
1059 | }; | |
1060 | ||
1bbce132 MR |
1061 | /* The format of the microMIPS first PLT entry in an O32 executable. |
1062 | We rely on v0 ($2) rather than t8 ($24) to contain the address | |
1063 | of the GOTPLT entry handled, so this stub may only be used when | |
1064 | all the subsequent PLT entries are microMIPS code too. | |
1065 | ||
1066 | The trailing NOP is for alignment and correct disassembly only. */ | |
1067 | static const bfd_vma micromips_o32_exec_plt0_entry[] = | |
1068 | { | |
1069 | 0x7980, 0x0000, /* addiupc $3, (&GOTPLT[0]) - . */ | |
1070 | 0xff23, 0x0000, /* lw $25, 0($3) */ | |
1071 | 0x0535, /* subu $2, $2, $3 */ | |
1072 | 0x2525, /* srl $2, $2, 2 */ | |
1073 | 0x3302, 0xfffe, /* subu $24, $2, 2 */ | |
1074 | 0x0dff, /* move $15, $31 */ | |
1075 | 0x45f9, /* jalrs $25 */ | |
1076 | 0x0f83, /* move $28, $3 */ | |
1077 | 0x0c00 /* nop */ | |
1078 | }; | |
1079 | ||
833794fc MR |
1080 | /* The format of the microMIPS first PLT entry in an O32 executable |
1081 | in the insn32 mode. */ | |
1082 | static const bfd_vma micromips_insn32_o32_exec_plt0_entry[] = | |
1083 | { | |
1084 | 0x41bc, 0x0000, /* lui $28, %hi(&GOTPLT[0]) */ | |
1085 | 0xff3c, 0x0000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1086 | 0x339c, 0x0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1087 | 0x0398, 0xc1d0, /* subu $24, $24, $28 */ | |
40fc1451 | 1088 | 0x001f, 0x7a90, /* or $15, $31, zero */ |
833794fc MR |
1089 | 0x0318, 0x1040, /* srl $24, $24, 2 */ |
1090 | 0x03f9, 0x0f3c, /* jalr $25 */ | |
1091 | 0x3318, 0xfffe /* subu $24, $24, 2 */ | |
1092 | }; | |
1093 | ||
1bbce132 | 1094 | /* The format of subsequent standard PLT entries. */ |
6d30f5b2 NC |
1095 | static const bfd_vma mips_exec_plt_entry[] = |
1096 | { | |
861fb55a DJ |
1097 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
1098 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1099 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1100 | 0x03200008 /* jr $25 */ | |
1101 | }; | |
1102 | ||
7361da2c AB |
1103 | /* In the following PLT entry the JR and ADDIU instructions will |
1104 | be swapped in _bfd_mips_elf_finish_dynamic_symbol because | |
1105 | LOAD_INTERLOCKS_P will be true for MIPS R6. */ | |
1106 | static const bfd_vma mipsr6_exec_plt_entry[] = | |
1107 | { | |
1108 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ | |
1109 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1110 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1111 | 0x03200009 /* jr $25 */ | |
1112 | }; | |
1113 | ||
1bbce132 MR |
1114 | /* The format of subsequent MIPS16 o32 PLT entries. We use v0 ($2) |
1115 | and v1 ($3) as temporaries because t8 ($24) and t9 ($25) are not | |
1116 | directly addressable. */ | |
1117 | static const bfd_vma mips16_o32_exec_plt_entry[] = | |
1118 | { | |
1119 | 0xb203, /* lw $2, 12($pc) */ | |
1120 | 0x9a60, /* lw $3, 0($2) */ | |
1121 | 0x651a, /* move $24, $2 */ | |
1122 | 0xeb00, /* jr $3 */ | |
1123 | 0x653b, /* move $25, $3 */ | |
1124 | 0x6500, /* nop */ | |
1125 | 0x0000, 0x0000 /* .word (.got.plt entry) */ | |
1126 | }; | |
1127 | ||
1128 | /* The format of subsequent microMIPS o32 PLT entries. We use v0 ($2) | |
1129 | as a temporary because t8 ($24) is not addressable with ADDIUPC. */ | |
1130 | static const bfd_vma micromips_o32_exec_plt_entry[] = | |
1131 | { | |
1132 | 0x7900, 0x0000, /* addiupc $2, (.got.plt entry) - . */ | |
1133 | 0xff22, 0x0000, /* lw $25, 0($2) */ | |
1134 | 0x4599, /* jr $25 */ | |
1135 | 0x0f02 /* move $24, $2 */ | |
1136 | }; | |
1137 | ||
833794fc MR |
1138 | /* The format of subsequent microMIPS o32 PLT entries in the insn32 mode. */ |
1139 | static const bfd_vma micromips_insn32_o32_exec_plt_entry[] = | |
1140 | { | |
1141 | 0x41af, 0x0000, /* lui $15, %hi(.got.plt entry) */ | |
1142 | 0xff2f, 0x0000, /* lw $25, %lo(.got.plt entry)($15) */ | |
1143 | 0x0019, 0x0f3c, /* jr $25 */ | |
1144 | 0x330f, 0x0000 /* addiu $24, $15, %lo(.got.plt entry) */ | |
1145 | }; | |
1146 | ||
0a44bf69 | 1147 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
1148 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
1149 | { | |
0a44bf69 RS |
1150 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
1151 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
1152 | 0x8f390008, /* lw t9, 8(t9) */ | |
1153 | 0x00000000, /* nop */ | |
1154 | 0x03200008, /* jr t9 */ | |
1155 | 0x00000000 /* nop */ | |
1156 | }; | |
1157 | ||
1158 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1159 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
1160 | { | |
0a44bf69 RS |
1161 | 0x10000000, /* b .PLT_resolver */ |
1162 | 0x24180000, /* li t8, <pltindex> */ | |
1163 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
1164 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
1165 | 0x8f390000, /* lw t9, 0(t9) */ | |
1166 | 0x00000000, /* nop */ | |
1167 | 0x03200008, /* jr t9 */ | |
1168 | 0x00000000 /* nop */ | |
1169 | }; | |
1170 | ||
1171 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1172 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1173 | { | |
0a44bf69 RS |
1174 | 0x8f990008, /* lw t9, 8(gp) */ |
1175 | 0x00000000, /* nop */ | |
1176 | 0x03200008, /* jr t9 */ | |
1177 | 0x00000000, /* nop */ | |
1178 | 0x00000000, /* nop */ | |
1179 | 0x00000000 /* nop */ | |
1180 | }; | |
1181 | ||
1182 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1183 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1184 | { | |
0a44bf69 RS |
1185 | 0x10000000, /* b .PLT_resolver */ |
1186 | 0x24180000 /* li t8, <pltindex> */ | |
1187 | }; | |
1188 | \f | |
d21911ea MR |
1189 | /* microMIPS 32-bit opcode helper installer. */ |
1190 | ||
1191 | static void | |
1192 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1193 | { | |
1194 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
07d6d2b8 | 1195 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); |
d21911ea MR |
1196 | } |
1197 | ||
1198 | /* microMIPS 32-bit opcode helper retriever. */ | |
1199 | ||
1200 | static bfd_vma | |
1201 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1202 | { | |
1203 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1204 | } | |
1205 | \f | |
b49e97c9 TS |
1206 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1207 | ||
1208 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1209 | ((struct mips_elf_link_hash_entry *) \ | |
1210 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1211 | (copy), (follow))) | |
1212 | ||
1213 | /* Traverse a MIPS ELF linker hash table. */ | |
1214 | ||
1215 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1216 | (elf_link_hash_traverse \ | |
1217 | (&(table)->root, \ | |
9719ad41 | 1218 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1219 | (info))) |
1220 | ||
0f20cc35 DJ |
1221 | /* Find the base offsets for thread-local storage in this object, |
1222 | for GD/LD and IE/LE respectively. */ | |
1223 | ||
1224 | #define TP_OFFSET 0x7000 | |
1225 | #define DTP_OFFSET 0x8000 | |
1226 | ||
1227 | static bfd_vma | |
1228 | dtprel_base (struct bfd_link_info *info) | |
1229 | { | |
1230 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1231 | if (elf_hash_table (info)->tls_sec == NULL) | |
1232 | return 0; | |
1233 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1234 | } | |
1235 | ||
1236 | static bfd_vma | |
1237 | tprel_base (struct bfd_link_info *info) | |
1238 | { | |
1239 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1240 | if (elf_hash_table (info)->tls_sec == NULL) | |
1241 | return 0; | |
1242 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1243 | } | |
1244 | ||
b49e97c9 TS |
1245 | /* Create an entry in a MIPS ELF linker hash table. */ |
1246 | ||
1247 | static struct bfd_hash_entry * | |
9719ad41 RS |
1248 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1249 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1250 | { |
1251 | struct mips_elf_link_hash_entry *ret = | |
1252 | (struct mips_elf_link_hash_entry *) entry; | |
1253 | ||
1254 | /* Allocate the structure if it has not already been allocated by a | |
1255 | subclass. */ | |
9719ad41 RS |
1256 | if (ret == NULL) |
1257 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1258 | if (ret == NULL) | |
b49e97c9 TS |
1259 | return (struct bfd_hash_entry *) ret; |
1260 | ||
1261 | /* Call the allocation method of the superclass. */ | |
1262 | ret = ((struct mips_elf_link_hash_entry *) | |
1263 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1264 | table, string)); | |
9719ad41 | 1265 | if (ret != NULL) |
b49e97c9 TS |
1266 | { |
1267 | /* Set local fields. */ | |
1268 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1269 | /* We use -2 as a marker to indicate that the information has | |
1270 | not been set. -1 means there is no associated ifd. */ | |
1271 | ret->esym.ifd = -2; | |
861fb55a | 1272 | ret->la25_stub = 0; |
b49e97c9 | 1273 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1274 | ret->fn_stub = NULL; |
b49e97c9 TS |
1275 | ret->call_stub = NULL; |
1276 | ret->call_fp_stub = NULL; | |
634835ae | 1277 | ret->global_got_area = GGA_NONE; |
6ccf4795 | 1278 | ret->got_only_for_calls = TRUE; |
71782a75 | 1279 | ret->readonly_reloc = FALSE; |
861fb55a | 1280 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1281 | ret->no_fn_stub = FALSE; |
1282 | ret->need_fn_stub = FALSE; | |
861fb55a | 1283 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1284 | ret->needs_lazy_stub = FALSE; |
1bbce132 | 1285 | ret->use_plt_entry = FALSE; |
b49e97c9 TS |
1286 | } |
1287 | ||
1288 | return (struct bfd_hash_entry *) ret; | |
1289 | } | |
f0abc2a1 | 1290 | |
6ae68ba3 MR |
1291 | /* Allocate MIPS ELF private object data. */ |
1292 | ||
1293 | bfd_boolean | |
1294 | _bfd_mips_elf_mkobject (bfd *abfd) | |
1295 | { | |
1296 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1297 | MIPS_ELF_DATA); | |
1298 | } | |
1299 | ||
f0abc2a1 | 1300 | bfd_boolean |
9719ad41 | 1301 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1302 | { |
f592407e AM |
1303 | if (!sec->used_by_bfd) |
1304 | { | |
1305 | struct _mips_elf_section_data *sdata; | |
1306 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1307 | |
f592407e AM |
1308 | sdata = bfd_zalloc (abfd, amt); |
1309 | if (sdata == NULL) | |
1310 | return FALSE; | |
1311 | sec->used_by_bfd = sdata; | |
1312 | } | |
f0abc2a1 AM |
1313 | |
1314 | return _bfd_elf_new_section_hook (abfd, sec); | |
1315 | } | |
b49e97c9 TS |
1316 | \f |
1317 | /* Read ECOFF debugging information from a .mdebug section into a | |
1318 | ecoff_debug_info structure. */ | |
1319 | ||
b34976b6 | 1320 | bfd_boolean |
9719ad41 RS |
1321 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1322 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1323 | { |
1324 | HDRR *symhdr; | |
1325 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1326 | char *ext_hdr; |
b49e97c9 TS |
1327 | |
1328 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1329 | memset (debug, 0, sizeof (*debug)); | |
1330 | ||
9719ad41 | 1331 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1332 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1333 | goto error_return; | |
1334 | ||
9719ad41 | 1335 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1336 | swap->external_hdr_size)) |
b49e97c9 TS |
1337 | goto error_return; |
1338 | ||
1339 | symhdr = &debug->symbolic_header; | |
1340 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1341 | ||
1342 | /* The symbolic header contains absolute file offsets and sizes to | |
1343 | read. */ | |
1344 | #define READ(ptr, offset, count, size, type) \ | |
1345 | if (symhdr->count == 0) \ | |
1346 | debug->ptr = NULL; \ | |
1347 | else \ | |
1348 | { \ | |
1349 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1350 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1351 | if (debug->ptr == NULL) \ |
1352 | goto error_return; \ | |
9719ad41 | 1353 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1354 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1355 | goto error_return; \ | |
1356 | } | |
1357 | ||
1358 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1359 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1360 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1361 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1362 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1363 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1364 | union aux_ext *); | |
1365 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1366 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1367 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1368 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1369 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1370 | #undef READ |
1371 | ||
1372 | debug->fdr = NULL; | |
b49e97c9 | 1373 | |
b34976b6 | 1374 | return TRUE; |
b49e97c9 TS |
1375 | |
1376 | error_return: | |
1377 | if (ext_hdr != NULL) | |
1378 | free (ext_hdr); | |
1379 | if (debug->line != NULL) | |
1380 | free (debug->line); | |
1381 | if (debug->external_dnr != NULL) | |
1382 | free (debug->external_dnr); | |
1383 | if (debug->external_pdr != NULL) | |
1384 | free (debug->external_pdr); | |
1385 | if (debug->external_sym != NULL) | |
1386 | free (debug->external_sym); | |
1387 | if (debug->external_opt != NULL) | |
1388 | free (debug->external_opt); | |
1389 | if (debug->external_aux != NULL) | |
1390 | free (debug->external_aux); | |
1391 | if (debug->ss != NULL) | |
1392 | free (debug->ss); | |
1393 | if (debug->ssext != NULL) | |
1394 | free (debug->ssext); | |
1395 | if (debug->external_fdr != NULL) | |
1396 | free (debug->external_fdr); | |
1397 | if (debug->external_rfd != NULL) | |
1398 | free (debug->external_rfd); | |
1399 | if (debug->external_ext != NULL) | |
1400 | free (debug->external_ext); | |
b34976b6 | 1401 | return FALSE; |
b49e97c9 TS |
1402 | } |
1403 | \f | |
1404 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1405 | ||
1406 | static void | |
9719ad41 | 1407 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1408 | { |
1409 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1410 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1411 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1412 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1413 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1414 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1415 | ||
1416 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1417 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1418 | ||
1419 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1420 | } |
1421 | ||
1422 | /* Create a runtime procedure table from the .mdebug section. */ | |
1423 | ||
b34976b6 | 1424 | static bfd_boolean |
9719ad41 RS |
1425 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1426 | struct bfd_link_info *info, asection *s, | |
1427 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1428 | { |
1429 | const struct ecoff_debug_swap *swap; | |
1430 | HDRR *hdr = &debug->symbolic_header; | |
1431 | RPDR *rpdr, *rp; | |
1432 | struct rpdr_ext *erp; | |
9719ad41 | 1433 | void *rtproc; |
b49e97c9 TS |
1434 | struct pdr_ext *epdr; |
1435 | struct sym_ext *esym; | |
1436 | char *ss, **sv; | |
1437 | char *str; | |
1438 | bfd_size_type size; | |
1439 | bfd_size_type count; | |
1440 | unsigned long sindex; | |
1441 | unsigned long i; | |
1442 | PDR pdr; | |
1443 | SYMR sym; | |
1444 | const char *no_name_func = _("static procedure (no name)"); | |
1445 | ||
1446 | epdr = NULL; | |
1447 | rpdr = NULL; | |
1448 | esym = NULL; | |
1449 | ss = NULL; | |
1450 | sv = NULL; | |
1451 | ||
1452 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1453 | ||
1454 | sindex = strlen (no_name_func) + 1; | |
1455 | count = hdr->ipdMax; | |
1456 | if (count > 0) | |
1457 | { | |
1458 | size = swap->external_pdr_size; | |
1459 | ||
9719ad41 | 1460 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1461 | if (epdr == NULL) |
1462 | goto error_return; | |
1463 | ||
9719ad41 | 1464 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1465 | goto error_return; |
1466 | ||
1467 | size = sizeof (RPDR); | |
9719ad41 | 1468 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1469 | if (rpdr == NULL) |
1470 | goto error_return; | |
1471 | ||
1472 | size = sizeof (char *); | |
9719ad41 | 1473 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1474 | if (sv == NULL) |
1475 | goto error_return; | |
1476 | ||
1477 | count = hdr->isymMax; | |
1478 | size = swap->external_sym_size; | |
9719ad41 | 1479 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1480 | if (esym == NULL) |
1481 | goto error_return; | |
1482 | ||
9719ad41 | 1483 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1484 | goto error_return; |
1485 | ||
1486 | count = hdr->issMax; | |
9719ad41 | 1487 | ss = bfd_malloc (count); |
b49e97c9 TS |
1488 | if (ss == NULL) |
1489 | goto error_return; | |
f075ee0c | 1490 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1491 | goto error_return; |
1492 | ||
1493 | count = hdr->ipdMax; | |
1494 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1495 | { | |
9719ad41 RS |
1496 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1497 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1498 | rp->adr = sym.value; |
1499 | rp->regmask = pdr.regmask; | |
1500 | rp->regoffset = pdr.regoffset; | |
1501 | rp->fregmask = pdr.fregmask; | |
1502 | rp->fregoffset = pdr.fregoffset; | |
1503 | rp->frameoffset = pdr.frameoffset; | |
1504 | rp->framereg = pdr.framereg; | |
1505 | rp->pcreg = pdr.pcreg; | |
1506 | rp->irpss = sindex; | |
1507 | sv[i] = ss + sym.iss; | |
1508 | sindex += strlen (sv[i]) + 1; | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1513 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1514 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1515 | if (rtproc == NULL) |
1516 | { | |
1517 | mips_elf_hash_table (info)->procedure_count = 0; | |
1518 | goto error_return; | |
1519 | } | |
1520 | ||
1521 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1522 | ||
9719ad41 | 1523 | erp = rtproc; |
b49e97c9 TS |
1524 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1525 | erp++; | |
1526 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1527 | strcpy (str, no_name_func); | |
1528 | str += strlen (no_name_func) + 1; | |
1529 | for (i = 0; i < count; i++) | |
1530 | { | |
1531 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1532 | strcpy (str, sv[i]); | |
1533 | str += strlen (sv[i]) + 1; | |
1534 | } | |
1535 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1536 | ||
1537 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1538 | s->size = size; |
9719ad41 | 1539 | s->contents = rtproc; |
b49e97c9 TS |
1540 | |
1541 | /* Skip this section later on (I don't think this currently | |
1542 | matters, but someday it might). */ | |
8423293d | 1543 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1544 | |
1545 | if (epdr != NULL) | |
1546 | free (epdr); | |
1547 | if (rpdr != NULL) | |
1548 | free (rpdr); | |
1549 | if (esym != NULL) | |
1550 | free (esym); | |
1551 | if (ss != NULL) | |
1552 | free (ss); | |
1553 | if (sv != NULL) | |
1554 | free (sv); | |
1555 | ||
b34976b6 | 1556 | return TRUE; |
b49e97c9 TS |
1557 | |
1558 | error_return: | |
1559 | if (epdr != NULL) | |
1560 | free (epdr); | |
1561 | if (rpdr != NULL) | |
1562 | free (rpdr); | |
1563 | if (esym != NULL) | |
1564 | free (esym); | |
1565 | if (ss != NULL) | |
1566 | free (ss); | |
1567 | if (sv != NULL) | |
1568 | free (sv); | |
b34976b6 | 1569 | return FALSE; |
b49e97c9 | 1570 | } |
738e5348 | 1571 | \f |
861fb55a DJ |
1572 | /* We're going to create a stub for H. Create a symbol for the stub's |
1573 | value and size, to help make the disassembly easier to read. */ | |
1574 | ||
1575 | static bfd_boolean | |
1576 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1577 | struct mips_elf_link_hash_entry *h, | |
1578 | const char *prefix, asection *s, bfd_vma value, | |
1579 | bfd_vma size) | |
1580 | { | |
a848a227 | 1581 | bfd_boolean micromips_p = ELF_ST_IS_MICROMIPS (h->root.other); |
861fb55a DJ |
1582 | struct bfd_link_hash_entry *bh; |
1583 | struct elf_link_hash_entry *elfh; | |
e1fa0163 NC |
1584 | char *name; |
1585 | bfd_boolean res; | |
861fb55a | 1586 | |
a848a227 | 1587 | if (micromips_p) |
df58fc94 RS |
1588 | value |= 1; |
1589 | ||
861fb55a | 1590 | /* Create a new symbol. */ |
e1fa0163 | 1591 | name = concat (prefix, h->root.root.root.string, NULL); |
861fb55a | 1592 | bh = NULL; |
e1fa0163 NC |
1593 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1594 | BSF_LOCAL, s, value, NULL, | |
1595 | TRUE, FALSE, &bh); | |
1596 | free (name); | |
1597 | if (! res) | |
861fb55a DJ |
1598 | return FALSE; |
1599 | ||
1600 | /* Make it a local function. */ | |
1601 | elfh = (struct elf_link_hash_entry *) bh; | |
1602 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1603 | elfh->size = size; | |
1604 | elfh->forced_local = 1; | |
a848a227 MR |
1605 | if (micromips_p) |
1606 | elfh->other = ELF_ST_SET_MICROMIPS (elfh->other); | |
861fb55a DJ |
1607 | return TRUE; |
1608 | } | |
1609 | ||
738e5348 RS |
1610 | /* We're about to redefine H. Create a symbol to represent H's |
1611 | current value and size, to help make the disassembly easier | |
1612 | to read. */ | |
1613 | ||
1614 | static bfd_boolean | |
1615 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1616 | struct mips_elf_link_hash_entry *h, | |
1617 | const char *prefix) | |
1618 | { | |
1619 | struct bfd_link_hash_entry *bh; | |
1620 | struct elf_link_hash_entry *elfh; | |
e1fa0163 | 1621 | char *name; |
738e5348 RS |
1622 | asection *s; |
1623 | bfd_vma value; | |
e1fa0163 | 1624 | bfd_boolean res; |
738e5348 RS |
1625 | |
1626 | /* Read the symbol's value. */ | |
1627 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1628 | || h->root.root.type == bfd_link_hash_defweak); | |
1629 | s = h->root.root.u.def.section; | |
1630 | value = h->root.root.u.def.value; | |
1631 | ||
1632 | /* Create a new symbol. */ | |
e1fa0163 | 1633 | name = concat (prefix, h->root.root.root.string, NULL); |
738e5348 | 1634 | bh = NULL; |
e1fa0163 NC |
1635 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1636 | BSF_LOCAL, s, value, NULL, | |
1637 | TRUE, FALSE, &bh); | |
1638 | free (name); | |
1639 | if (! res) | |
738e5348 RS |
1640 | return FALSE; |
1641 | ||
1642 | /* Make it local and copy the other attributes from H. */ | |
1643 | elfh = (struct elf_link_hash_entry *) bh; | |
1644 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1645 | elfh->other = h->root.other; | |
1646 | elfh->size = h->root.size; | |
1647 | elfh->forced_local = 1; | |
1648 | return TRUE; | |
1649 | } | |
1650 | ||
1651 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1652 | function rather than to a hard-float stub. */ | |
1653 | ||
1654 | static bfd_boolean | |
1655 | section_allows_mips16_refs_p (asection *section) | |
1656 | { | |
1657 | const char *name; | |
1658 | ||
1659 | name = bfd_get_section_name (section->owner, section); | |
1660 | return (FN_STUB_P (name) | |
1661 | || CALL_STUB_P (name) | |
1662 | || CALL_FP_STUB_P (name) | |
1663 | || strcmp (name, ".pdr") == 0); | |
1664 | } | |
1665 | ||
1666 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1667 | stub section of some kind. Return the R_SYMNDX of the target | |
1668 | function, or 0 if we can't decide which function that is. */ | |
1669 | ||
1670 | static unsigned long | |
cb4437b8 MR |
1671 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1672 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1673 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1674 | const Elf_Internal_Rela *relend) |
1675 | { | |
cb4437b8 | 1676 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1677 | const Elf_Internal_Rela *rel; |
1678 | ||
cb4437b8 MR |
1679 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1680 | one in a compound relocation. */ | |
1681 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1682 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1683 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1684 | ||
1685 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1686 | the traditional behavior. */ | |
1687 | if (relocs < relend) | |
1688 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1689 | ||
1690 | return 0; | |
1691 | } | |
b49e97c9 TS |
1692 | |
1693 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1694 | discard them. */ | |
1695 | ||
861fb55a DJ |
1696 | static void |
1697 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1698 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1699 | { |
738e5348 RS |
1700 | /* Dynamic symbols must use the standard call interface, in case other |
1701 | objects try to call them. */ | |
1702 | if (h->fn_stub != NULL | |
1703 | && h->root.dynindx != -1) | |
1704 | { | |
1705 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1706 | h->need_fn_stub = TRUE; | |
1707 | } | |
1708 | ||
b49e97c9 TS |
1709 | if (h->fn_stub != NULL |
1710 | && ! h->need_fn_stub) | |
1711 | { | |
1712 | /* We don't need the fn_stub; the only references to this symbol | |
07d6d2b8 AM |
1713 | are 16 bit calls. Clobber the size to 0 to prevent it from |
1714 | being included in the link. */ | |
eea6121a | 1715 | h->fn_stub->size = 0; |
b49e97c9 TS |
1716 | h->fn_stub->flags &= ~SEC_RELOC; |
1717 | h->fn_stub->reloc_count = 0; | |
1718 | h->fn_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1719 | h->fn_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1720 | } |
1721 | ||
1722 | if (h->call_stub != NULL | |
30c09090 | 1723 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1724 | { |
1725 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1726 | calls from other 16 bit functions are OK. Clobber the size |
1727 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1728 | h->call_stub->size = 0; |
b49e97c9 TS |
1729 | h->call_stub->flags &= ~SEC_RELOC; |
1730 | h->call_stub->reloc_count = 0; | |
1731 | h->call_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1732 | h->call_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1733 | } |
1734 | ||
1735 | if (h->call_fp_stub != NULL | |
30c09090 | 1736 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1737 | { |
1738 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1739 | calls from other 16 bit functions are OK. Clobber the size |
1740 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1741 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1742 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1743 | h->call_fp_stub->reloc_count = 0; | |
1744 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1745 | h->call_fp_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 | 1746 | } |
861fb55a DJ |
1747 | } |
1748 | ||
1749 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1750 | ||
1751 | static hashval_t | |
1752 | mips_elf_la25_stub_hash (const void *entry_) | |
1753 | { | |
1754 | const struct mips_elf_la25_stub *entry; | |
1755 | ||
1756 | entry = (struct mips_elf_la25_stub *) entry_; | |
1757 | return entry->h->root.root.u.def.section->id | |
1758 | + entry->h->root.root.u.def.value; | |
1759 | } | |
1760 | ||
1761 | static int | |
1762 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1763 | { | |
1764 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1765 | ||
1766 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1767 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1768 | return ((entry1->h->root.root.u.def.section | |
1769 | == entry2->h->root.root.u.def.section) | |
1770 | && (entry1->h->root.root.u.def.value | |
1771 | == entry2->h->root.root.u.def.value)); | |
1772 | } | |
1773 | ||
1774 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1775 | the linker's implementation of add_stub_function. Return true on | |
1776 | success. */ | |
1777 | ||
1778 | bfd_boolean | |
1779 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1780 | asection *(*fn) (const char *, asection *, | |
1781 | asection *)) | |
1782 | { | |
1783 | struct mips_elf_link_hash_table *htab; | |
1784 | ||
1785 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1786 | if (htab == NULL) |
1787 | return FALSE; | |
1788 | ||
861fb55a DJ |
1789 | htab->add_stub_section = fn; |
1790 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1791 | mips_elf_la25_stub_eq, NULL); | |
1792 | if (htab->la25_stubs == NULL) | |
1793 | return FALSE; | |
1794 | ||
1795 | return TRUE; | |
1796 | } | |
1797 | ||
1798 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1799 | that it or its fn_stub might need $25 to be valid on entry. |
1800 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1801 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1802 | entry points are of interest here. */ | |
861fb55a DJ |
1803 | |
1804 | static bfd_boolean | |
1805 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1806 | { | |
1807 | return ((h->root.root.type == bfd_link_hash_defined | |
1808 | || h->root.root.type == bfd_link_hash_defweak) | |
1809 | && h->root.def_regular | |
1810 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
f02cb058 | 1811 | && !bfd_is_und_section (h->root.root.u.def.section) |
8f0c309a CLT |
1812 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1813 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1814 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1815 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1816 | } | |
1817 | ||
8f0c309a CLT |
1818 | /* Set *SEC to the input section that contains the target of STUB. |
1819 | Return the offset of the target from the start of that section. */ | |
1820 | ||
1821 | static bfd_vma | |
1822 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1823 | asection **sec) | |
1824 | { | |
1825 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1826 | { | |
1827 | BFD_ASSERT (stub->h->need_fn_stub); | |
1828 | *sec = stub->h->fn_stub; | |
1829 | return 0; | |
1830 | } | |
1831 | else | |
1832 | { | |
1833 | *sec = stub->h->root.root.u.def.section; | |
1834 | return stub->h->root.root.u.def.value; | |
1835 | } | |
1836 | } | |
1837 | ||
861fb55a DJ |
1838 | /* STUB describes an la25 stub that we have decided to implement |
1839 | by inserting an LUI/ADDIU pair before the target function. | |
1840 | Create the section and redirect the function symbol to it. */ | |
1841 | ||
1842 | static bfd_boolean | |
1843 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1844 | struct bfd_link_info *info) | |
1845 | { | |
1846 | struct mips_elf_link_hash_table *htab; | |
1847 | char *name; | |
1848 | asection *s, *input_section; | |
1849 | unsigned int align; | |
1850 | ||
1851 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1852 | if (htab == NULL) |
1853 | return FALSE; | |
861fb55a DJ |
1854 | |
1855 | /* Create a unique name for the new section. */ | |
1856 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1857 | if (name == NULL) | |
1858 | return FALSE; | |
1859 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1860 | ||
1861 | /* Create the section. */ | |
8f0c309a | 1862 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1863 | s = htab->add_stub_section (name, input_section, |
1864 | input_section->output_section); | |
1865 | if (s == NULL) | |
1866 | return FALSE; | |
1867 | ||
1868 | /* Make sure that any padding goes before the stub. */ | |
1869 | align = input_section->alignment_power; | |
1870 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1871 | return FALSE; | |
1872 | if (align > 3) | |
1873 | s->size = (1 << align) - 8; | |
1874 | ||
1875 | /* Create a symbol for the stub. */ | |
1876 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1877 | stub->stub_section = s; | |
1878 | stub->offset = s->size; | |
1879 | ||
1880 | /* Allocate room for it. */ | |
1881 | s->size += 8; | |
1882 | return TRUE; | |
1883 | } | |
1884 | ||
1885 | /* STUB describes an la25 stub that we have decided to implement | |
1886 | with a separate trampoline. Allocate room for it and redirect | |
1887 | the function symbol to it. */ | |
1888 | ||
1889 | static bfd_boolean | |
1890 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1891 | struct bfd_link_info *info) | |
1892 | { | |
1893 | struct mips_elf_link_hash_table *htab; | |
1894 | asection *s; | |
1895 | ||
1896 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1897 | if (htab == NULL) |
1898 | return FALSE; | |
861fb55a DJ |
1899 | |
1900 | /* Create a trampoline section, if we haven't already. */ | |
1901 | s = htab->strampoline; | |
1902 | if (s == NULL) | |
1903 | { | |
1904 | asection *input_section = stub->h->root.root.u.def.section; | |
1905 | s = htab->add_stub_section (".text", NULL, | |
1906 | input_section->output_section); | |
1907 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1908 | return FALSE; | |
1909 | htab->strampoline = s; | |
1910 | } | |
1911 | ||
1912 | /* Create a symbol for the stub. */ | |
1913 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1914 | stub->stub_section = s; | |
1915 | stub->offset = s->size; | |
1916 | ||
1917 | /* Allocate room for it. */ | |
1918 | s->size += 16; | |
1919 | return TRUE; | |
1920 | } | |
1921 | ||
1922 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1923 | appropriate stub exists and point H at it. */ | |
1924 | ||
1925 | static bfd_boolean | |
1926 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1927 | struct mips_elf_link_hash_entry *h) | |
1928 | { | |
1929 | struct mips_elf_link_hash_table *htab; | |
1930 | struct mips_elf_la25_stub search, *stub; | |
1931 | bfd_boolean use_trampoline_p; | |
1932 | asection *s; | |
1933 | bfd_vma value; | |
1934 | void **slot; | |
1935 | ||
861fb55a DJ |
1936 | /* Describe the stub we want. */ |
1937 | search.stub_section = NULL; | |
1938 | search.offset = 0; | |
1939 | search.h = h; | |
1940 | ||
1941 | /* See if we've already created an equivalent stub. */ | |
1942 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1943 | if (htab == NULL) |
1944 | return FALSE; | |
1945 | ||
861fb55a DJ |
1946 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1947 | if (slot == NULL) | |
1948 | return FALSE; | |
1949 | ||
1950 | stub = (struct mips_elf_la25_stub *) *slot; | |
1951 | if (stub != NULL) | |
1952 | { | |
1953 | /* We can reuse the existing stub. */ | |
1954 | h->la25_stub = stub; | |
1955 | return TRUE; | |
1956 | } | |
1957 | ||
1958 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1959 | stub = bfd_malloc (sizeof (search)); | |
1960 | if (stub == NULL) | |
1961 | return FALSE; | |
1962 | *stub = search; | |
1963 | *slot = stub; | |
1964 | ||
8f0c309a CLT |
1965 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
1966 | of the section and if we would need no more than 2 nops. */ | |
1967 | value = mips_elf_get_la25_target (stub, &s); | |
fe152e64 MR |
1968 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
1969 | value &= ~1; | |
8f0c309a CLT |
1970 | use_trampoline_p = (value != 0 || s->alignment_power > 4); |
1971 | ||
861fb55a DJ |
1972 | h->la25_stub = stub; |
1973 | return (use_trampoline_p | |
1974 | ? mips_elf_add_la25_trampoline (stub, info) | |
1975 | : mips_elf_add_la25_intro (stub, info)); | |
1976 | } | |
1977 | ||
1978 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1979 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1980 | ||
1981 | static bfd_boolean | |
1982 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1983 | { | |
1984 | struct mips_htab_traverse_info *hti; | |
1985 | ||
1986 | hti = (struct mips_htab_traverse_info *) data; | |
0e1862bb | 1987 | if (!bfd_link_relocatable (hti->info)) |
861fb55a | 1988 | mips_elf_check_mips16_stubs (hti->info, h); |
b49e97c9 | 1989 | |
861fb55a DJ |
1990 | if (mips_elf_local_pic_function_p (h)) |
1991 | { | |
ba85c43e NC |
1992 | /* PR 12845: If H is in a section that has been garbage |
1993 | collected it will have its output section set to *ABS*. */ | |
1994 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
1995 | return TRUE; | |
1996 | ||
861fb55a DJ |
1997 | /* H is a function that might need $25 to be valid on entry. |
1998 | If we're creating a non-PIC relocatable object, mark H as | |
1999 | being PIC. If we're creating a non-relocatable object with | |
2000 | non-PIC branches and jumps to H, make sure that H has an la25 | |
2001 | stub. */ | |
0e1862bb | 2002 | if (bfd_link_relocatable (hti->info)) |
861fb55a DJ |
2003 | { |
2004 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
2005 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
2006 | } | |
2007 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
2008 | { | |
2009 | hti->error = TRUE; | |
2010 | return FALSE; | |
2011 | } | |
2012 | } | |
b34976b6 | 2013 | return TRUE; |
b49e97c9 TS |
2014 | } |
2015 | \f | |
d6f16593 MR |
2016 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
2017 | Most mips16 instructions are 16 bits, but these instructions | |
2018 | are 32 bits. | |
2019 | ||
2020 | The format of these instructions is: | |
2021 | ||
2022 | +--------------+--------------------------------+ | |
2023 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
2024 | +--------------+--------------------------------+ | |
07d6d2b8 | 2025 | | Immediate 15:0 | |
d6f16593 MR |
2026 | +-----------------------------------------------+ |
2027 | ||
2028 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
2029 | Note that the immediate value in the first word is swapped. | |
2030 | ||
2031 | When producing a relocatable object file, R_MIPS16_26 is | |
2032 | handled mostly like R_MIPS_26. In particular, the addend is | |
2033 | stored as a straight 26-bit value in a 32-bit instruction. | |
2034 | (gas makes life simpler for itself by never adjusting a | |
2035 | R_MIPS16_26 reloc to be against a section, so the addend is | |
2036 | always zero). However, the 32 bit instruction is stored as 2 | |
2037 | 16-bit values, rather than a single 32-bit value. In a | |
2038 | big-endian file, the result is the same; in a little-endian | |
2039 | file, the two 16-bit halves of the 32 bit value are swapped. | |
2040 | This is so that a disassembler can recognize the jal | |
2041 | instruction. | |
2042 | ||
2043 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
2044 | instruction stored as two 16-bit values. The addend A is the | |
2045 | contents of the targ26 field. The calculation is the same as | |
2046 | R_MIPS_26. When storing the calculated value, reorder the | |
2047 | immediate value as shown above, and don't forget to store the | |
2048 | value as two 16-bit values. | |
2049 | ||
2050 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
2051 | defined as | |
2052 | ||
2053 | big-endian: | |
2054 | +--------+----------------------+ | |
07d6d2b8 AM |
2055 | | | | |
2056 | | | targ26-16 | | |
2057 | |31 26|25 0| | |
d6f16593 MR |
2058 | +--------+----------------------+ |
2059 | ||
2060 | little-endian: | |
2061 | +----------+------+-------------+ | |
07d6d2b8 AM |
2062 | | | | | |
2063 | | sub1 | | sub2 | | |
2064 | |0 9|10 15|16 31| | |
d6f16593 MR |
2065 | +----------+--------------------+ |
2066 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
2067 | ((sub1 << 16) | sub2)). | |
2068 | ||
2069 | When producing a relocatable object file, the calculation is | |
2070 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2071 | When producing a fully linked file, the calculation is | |
2072 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2073 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
2074 | ||
738e5348 RS |
2075 | The table below lists the other MIPS16 instruction relocations. |
2076 | Each one is calculated in the same way as the non-MIPS16 relocation | |
2077 | given on the right, but using the extended MIPS16 layout of 16-bit | |
2078 | immediate fields: | |
2079 | ||
2080 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
2081 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
2082 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
2083 | R_MIPS16_HI16 R_MIPS_HI16 | |
2084 | R_MIPS16_LO16 R_MIPS_LO16 | |
2085 | ||
2086 | A typical instruction will have a format like this: | |
d6f16593 MR |
2087 | |
2088 | +--------------+--------------------------------+ | |
2089 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
2090 | +--------------+--------------------------------+ | |
2091 | | Major | rx | ry | Imm 4:0 | | |
2092 | +--------------+--------------------------------+ | |
2093 | ||
2094 | EXTEND is the five bit value 11110. Major is the instruction | |
2095 | opcode. | |
2096 | ||
738e5348 RS |
2097 | All we need to do here is shuffle the bits appropriately. |
2098 | As above, the two 16-bit halves must be swapped on a | |
c9775dde MR |
2099 | little-endian system. |
2100 | ||
2101 | Finally R_MIPS16_PC16_S1 corresponds to R_MIPS_PC16, however the | |
2102 | relocatable field is shifted by 1 rather than 2 and the same bit | |
2103 | shuffling is done as with the relocations above. */ | |
738e5348 RS |
2104 | |
2105 | static inline bfd_boolean | |
2106 | mips16_reloc_p (int r_type) | |
2107 | { | |
2108 | switch (r_type) | |
2109 | { | |
2110 | case R_MIPS16_26: | |
2111 | case R_MIPS16_GPREL: | |
2112 | case R_MIPS16_GOT16: | |
2113 | case R_MIPS16_CALL16: | |
2114 | case R_MIPS16_HI16: | |
2115 | case R_MIPS16_LO16: | |
d0f13682 CLT |
2116 | case R_MIPS16_TLS_GD: |
2117 | case R_MIPS16_TLS_LDM: | |
2118 | case R_MIPS16_TLS_DTPREL_HI16: | |
2119 | case R_MIPS16_TLS_DTPREL_LO16: | |
2120 | case R_MIPS16_TLS_GOTTPREL: | |
2121 | case R_MIPS16_TLS_TPREL_HI16: | |
2122 | case R_MIPS16_TLS_TPREL_LO16: | |
c9775dde | 2123 | case R_MIPS16_PC16_S1: |
738e5348 RS |
2124 | return TRUE; |
2125 | ||
2126 | default: | |
2127 | return FALSE; | |
2128 | } | |
2129 | } | |
2130 | ||
df58fc94 RS |
2131 | /* Check if a microMIPS reloc. */ |
2132 | ||
2133 | static inline bfd_boolean | |
2134 | micromips_reloc_p (unsigned int r_type) | |
2135 | { | |
2136 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
2137 | } | |
2138 | ||
2139 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
2140 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
2141 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
2142 | ||
2143 | static inline bfd_boolean | |
2144 | micromips_reloc_shuffle_p (unsigned int r_type) | |
2145 | { | |
2146 | return (micromips_reloc_p (r_type) | |
2147 | && r_type != R_MICROMIPS_PC7_S1 | |
2148 | && r_type != R_MICROMIPS_PC10_S1); | |
2149 | } | |
2150 | ||
738e5348 RS |
2151 | static inline bfd_boolean |
2152 | got16_reloc_p (int r_type) | |
2153 | { | |
df58fc94 RS |
2154 | return (r_type == R_MIPS_GOT16 |
2155 | || r_type == R_MIPS16_GOT16 | |
2156 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
2157 | } |
2158 | ||
2159 | static inline bfd_boolean | |
2160 | call16_reloc_p (int r_type) | |
2161 | { | |
df58fc94 RS |
2162 | return (r_type == R_MIPS_CALL16 |
2163 | || r_type == R_MIPS16_CALL16 | |
2164 | || r_type == R_MICROMIPS_CALL16); | |
2165 | } | |
2166 | ||
2167 | static inline bfd_boolean | |
2168 | got_disp_reloc_p (unsigned int r_type) | |
2169 | { | |
2170 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
2171 | } | |
2172 | ||
2173 | static inline bfd_boolean | |
2174 | got_page_reloc_p (unsigned int r_type) | |
2175 | { | |
2176 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
2177 | } | |
2178 | ||
df58fc94 RS |
2179 | static inline bfd_boolean |
2180 | got_lo16_reloc_p (unsigned int r_type) | |
2181 | { | |
2182 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2183 | } | |
2184 | ||
2185 | static inline bfd_boolean | |
2186 | call_hi16_reloc_p (unsigned int r_type) | |
2187 | { | |
2188 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2189 | } | |
2190 | ||
2191 | static inline bfd_boolean | |
2192 | call_lo16_reloc_p (unsigned int r_type) | |
2193 | { | |
2194 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2195 | } |
2196 | ||
2197 | static inline bfd_boolean | |
2198 | hi16_reloc_p (int r_type) | |
2199 | { | |
df58fc94 RS |
2200 | return (r_type == R_MIPS_HI16 |
2201 | || r_type == R_MIPS16_HI16 | |
7361da2c AB |
2202 | || r_type == R_MICROMIPS_HI16 |
2203 | || r_type == R_MIPS_PCHI16); | |
738e5348 | 2204 | } |
d6f16593 | 2205 | |
738e5348 RS |
2206 | static inline bfd_boolean |
2207 | lo16_reloc_p (int r_type) | |
2208 | { | |
df58fc94 RS |
2209 | return (r_type == R_MIPS_LO16 |
2210 | || r_type == R_MIPS16_LO16 | |
7361da2c AB |
2211 | || r_type == R_MICROMIPS_LO16 |
2212 | || r_type == R_MIPS_PCLO16); | |
738e5348 RS |
2213 | } |
2214 | ||
2215 | static inline bfd_boolean | |
2216 | mips16_call_reloc_p (int r_type) | |
2217 | { | |
2218 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2219 | } | |
d6f16593 | 2220 | |
38a7df63 CF |
2221 | static inline bfd_boolean |
2222 | jal_reloc_p (int r_type) | |
2223 | { | |
df58fc94 RS |
2224 | return (r_type == R_MIPS_26 |
2225 | || r_type == R_MIPS16_26 | |
2226 | || r_type == R_MICROMIPS_26_S1); | |
2227 | } | |
2228 | ||
99aefae6 MR |
2229 | static inline bfd_boolean |
2230 | b_reloc_p (int r_type) | |
2231 | { | |
2232 | return (r_type == R_MIPS_PC26_S2 | |
2233 | || r_type == R_MIPS_PC21_S2 | |
2234 | || r_type == R_MIPS_PC16 | |
c9775dde | 2235 | || r_type == R_MIPS_GNU_REL16_S2 |
9d862524 MR |
2236 | || r_type == R_MIPS16_PC16_S1 |
2237 | || r_type == R_MICROMIPS_PC16_S1 | |
2238 | || r_type == R_MICROMIPS_PC10_S1 | |
2239 | || r_type == R_MICROMIPS_PC7_S1); | |
99aefae6 MR |
2240 | } |
2241 | ||
7361da2c AB |
2242 | static inline bfd_boolean |
2243 | aligned_pcrel_reloc_p (int r_type) | |
2244 | { | |
2245 | return (r_type == R_MIPS_PC18_S3 | |
2246 | || r_type == R_MIPS_PC19_S2); | |
2247 | } | |
2248 | ||
9d862524 MR |
2249 | static inline bfd_boolean |
2250 | branch_reloc_p (int r_type) | |
2251 | { | |
2252 | return (r_type == R_MIPS_26 | |
2253 | || r_type == R_MIPS_PC26_S2 | |
2254 | || r_type == R_MIPS_PC21_S2 | |
2255 | || r_type == R_MIPS_PC16 | |
2256 | || r_type == R_MIPS_GNU_REL16_S2); | |
2257 | } | |
2258 | ||
c9775dde MR |
2259 | static inline bfd_boolean |
2260 | mips16_branch_reloc_p (int r_type) | |
2261 | { | |
2262 | return (r_type == R_MIPS16_26 | |
2263 | || r_type == R_MIPS16_PC16_S1); | |
2264 | } | |
2265 | ||
df58fc94 RS |
2266 | static inline bfd_boolean |
2267 | micromips_branch_reloc_p (int r_type) | |
2268 | { | |
2269 | return (r_type == R_MICROMIPS_26_S1 | |
2270 | || r_type == R_MICROMIPS_PC16_S1 | |
2271 | || r_type == R_MICROMIPS_PC10_S1 | |
2272 | || r_type == R_MICROMIPS_PC7_S1); | |
2273 | } | |
2274 | ||
2275 | static inline bfd_boolean | |
2276 | tls_gd_reloc_p (unsigned int r_type) | |
2277 | { | |
d0f13682 CLT |
2278 | return (r_type == R_MIPS_TLS_GD |
2279 | || r_type == R_MIPS16_TLS_GD | |
2280 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2281 | } |
2282 | ||
2283 | static inline bfd_boolean | |
2284 | tls_ldm_reloc_p (unsigned int r_type) | |
2285 | { | |
d0f13682 CLT |
2286 | return (r_type == R_MIPS_TLS_LDM |
2287 | || r_type == R_MIPS16_TLS_LDM | |
2288 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2289 | } |
2290 | ||
2291 | static inline bfd_boolean | |
2292 | tls_gottprel_reloc_p (unsigned int r_type) | |
2293 | { | |
d0f13682 CLT |
2294 | return (r_type == R_MIPS_TLS_GOTTPREL |
2295 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2296 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2297 | } |
2298 | ||
d6f16593 | 2299 | void |
df58fc94 RS |
2300 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
2301 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2302 | { |
df58fc94 | 2303 | bfd_vma first, second, val; |
d6f16593 | 2304 | |
df58fc94 | 2305 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2306 | return; |
2307 | ||
df58fc94 RS |
2308 | /* Pick up the first and second halfwords of the instruction. */ |
2309 | first = bfd_get_16 (abfd, data); | |
2310 | second = bfd_get_16 (abfd, data + 2); | |
2311 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2312 | val = first << 16 | second; | |
2313 | else if (r_type != R_MIPS16_26) | |
2314 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2315 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2316 | else |
df58fc94 RS |
2317 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2318 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2319 | bfd_put_32 (abfd, val, data); |
2320 | } | |
2321 | ||
2322 | void | |
df58fc94 RS |
2323 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
2324 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2325 | { |
df58fc94 | 2326 | bfd_vma first, second, val; |
d6f16593 | 2327 | |
df58fc94 | 2328 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2329 | return; |
2330 | ||
2331 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2332 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2333 | { |
df58fc94 RS |
2334 | second = val & 0xffff; |
2335 | first = val >> 16; | |
2336 | } | |
2337 | else if (r_type != R_MIPS16_26) | |
2338 | { | |
2339 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2340 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2341 | } |
2342 | else | |
2343 | { | |
df58fc94 RS |
2344 | second = val & 0xffff; |
2345 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2346 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2347 | } |
df58fc94 RS |
2348 | bfd_put_16 (abfd, second, data + 2); |
2349 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2350 | } |
2351 | ||
b49e97c9 | 2352 | bfd_reloc_status_type |
9719ad41 RS |
2353 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2354 | arelent *reloc_entry, asection *input_section, | |
2355 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
2356 | { |
2357 | bfd_vma relocation; | |
a7ebbfdf | 2358 | bfd_signed_vma val; |
30ac9238 | 2359 | bfd_reloc_status_type status; |
b49e97c9 TS |
2360 | |
2361 | if (bfd_is_com_section (symbol->section)) | |
2362 | relocation = 0; | |
2363 | else | |
2364 | relocation = symbol->value; | |
2365 | ||
2366 | relocation += symbol->section->output_section->vma; | |
2367 | relocation += symbol->section->output_offset; | |
2368 | ||
07515404 | 2369 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
2370 | return bfd_reloc_outofrange; |
2371 | ||
b49e97c9 | 2372 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2373 | val = reloc_entry->addend; |
2374 | ||
30ac9238 | 2375 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2376 | |
b49e97c9 | 2377 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2378 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2379 | an external symbol. */ |
1049f94e | 2380 | if (! relocatable |
b49e97c9 TS |
2381 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2382 | val += relocation - gp; | |
2383 | ||
a7ebbfdf TS |
2384 | if (reloc_entry->howto->partial_inplace) |
2385 | { | |
30ac9238 RS |
2386 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2387 | (bfd_byte *) data | |
2388 | + reloc_entry->address); | |
2389 | if (status != bfd_reloc_ok) | |
2390 | return status; | |
a7ebbfdf TS |
2391 | } |
2392 | else | |
2393 | reloc_entry->addend = val; | |
b49e97c9 | 2394 | |
1049f94e | 2395 | if (relocatable) |
b49e97c9 | 2396 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2397 | |
2398 | return bfd_reloc_ok; | |
2399 | } | |
2400 | ||
2401 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2402 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2403 | that contains the relocation field and DATA points to the start of | |
2404 | INPUT_SECTION. */ | |
2405 | ||
2406 | struct mips_hi16 | |
2407 | { | |
2408 | struct mips_hi16 *next; | |
2409 | bfd_byte *data; | |
2410 | asection *input_section; | |
2411 | arelent rel; | |
2412 | }; | |
2413 | ||
2414 | /* FIXME: This should not be a static variable. */ | |
2415 | ||
2416 | static struct mips_hi16 *mips_hi16_list; | |
2417 | ||
2418 | /* A howto special_function for REL *HI16 relocations. We can only | |
2419 | calculate the correct value once we've seen the partnering | |
2420 | *LO16 relocation, so just save the information for later. | |
2421 | ||
2422 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2423 | However, as a GNU extension, we permit an arbitrary number of | |
2424 | *HI16s to be associated with a single *LO16. This significantly | |
2425 | simplies the relocation handling in gcc. */ | |
2426 | ||
2427 | bfd_reloc_status_type | |
2428 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2429 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2430 | asection *input_section, bfd *output_bfd, | |
2431 | char **error_message ATTRIBUTE_UNUSED) | |
2432 | { | |
2433 | struct mips_hi16 *n; | |
2434 | ||
07515404 | 2435 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2436 | return bfd_reloc_outofrange; |
2437 | ||
2438 | n = bfd_malloc (sizeof *n); | |
2439 | if (n == NULL) | |
2440 | return bfd_reloc_outofrange; | |
2441 | ||
2442 | n->next = mips_hi16_list; | |
2443 | n->data = data; | |
2444 | n->input_section = input_section; | |
2445 | n->rel = *reloc_entry; | |
2446 | mips_hi16_list = n; | |
2447 | ||
2448 | if (output_bfd != NULL) | |
2449 | reloc_entry->address += input_section->output_offset; | |
2450 | ||
2451 | return bfd_reloc_ok; | |
2452 | } | |
2453 | ||
738e5348 | 2454 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2455 | like any other 16-bit relocation when applied to global symbols, but is |
2456 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2457 | ||
2458 | bfd_reloc_status_type | |
2459 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2460 | void *data, asection *input_section, | |
2461 | bfd *output_bfd, char **error_message) | |
2462 | { | |
2463 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2464 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2465 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2466 | /* The relocation is against a global symbol. */ | |
2467 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2468 | input_section, output_bfd, | |
2469 | error_message); | |
2470 | ||
2471 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2472 | input_section, output_bfd, error_message); | |
2473 | } | |
2474 | ||
2475 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2476 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2477 | any partnering high-part relocations as well. */ | |
2478 | ||
2479 | bfd_reloc_status_type | |
2480 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2481 | void *data, asection *input_section, | |
2482 | bfd *output_bfd, char **error_message) | |
2483 | { | |
2484 | bfd_vma vallo; | |
d6f16593 | 2485 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2486 | |
07515404 | 2487 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2488 | return bfd_reloc_outofrange; |
2489 | ||
df58fc94 | 2490 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
d6f16593 | 2491 | location); |
df58fc94 RS |
2492 | vallo = bfd_get_32 (abfd, location); |
2493 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2494 | location); | |
d6f16593 | 2495 | |
30ac9238 RS |
2496 | while (mips_hi16_list != NULL) |
2497 | { | |
2498 | bfd_reloc_status_type ret; | |
2499 | struct mips_hi16 *hi; | |
2500 | ||
2501 | hi = mips_hi16_list; | |
2502 | ||
738e5348 RS |
2503 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2504 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2505 | relocation (with a rightshift of 16). However, since GOT16 |
2506 | relocations can also be used with global symbols, their howto | |
2507 | has a rightshift of 0. */ | |
2508 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2509 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2510 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2511 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
df58fc94 RS |
2512 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
2513 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, FALSE); | |
30ac9238 RS |
2514 | |
2515 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2516 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2517 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2518 | ||
30ac9238 RS |
2519 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2520 | hi->input_section, output_bfd, | |
2521 | error_message); | |
2522 | if (ret != bfd_reloc_ok) | |
2523 | return ret; | |
2524 | ||
2525 | mips_hi16_list = hi->next; | |
2526 | free (hi); | |
2527 | } | |
2528 | ||
2529 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2530 | input_section, output_bfd, | |
2531 | error_message); | |
2532 | } | |
2533 | ||
2534 | /* A generic howto special_function. This calculates and installs the | |
2535 | relocation itself, thus avoiding the oft-discussed problems in | |
2536 | bfd_perform_relocation and bfd_install_relocation. */ | |
2537 | ||
2538 | bfd_reloc_status_type | |
2539 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2540 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2541 | asection *input_section, bfd *output_bfd, | |
2542 | char **error_message ATTRIBUTE_UNUSED) | |
2543 | { | |
2544 | bfd_signed_vma val; | |
2545 | bfd_reloc_status_type status; | |
2546 | bfd_boolean relocatable; | |
2547 | ||
2548 | relocatable = (output_bfd != NULL); | |
2549 | ||
07515404 | 2550 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2551 | return bfd_reloc_outofrange; |
2552 | ||
2553 | /* Build up the field adjustment in VAL. */ | |
2554 | val = 0; | |
2555 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2556 | { | |
2557 | /* Either we're calculating the final field value or we have a | |
2558 | relocation against a section symbol. Add in the section's | |
2559 | offset or address. */ | |
2560 | val += symbol->section->output_section->vma; | |
2561 | val += symbol->section->output_offset; | |
2562 | } | |
2563 | ||
2564 | if (!relocatable) | |
2565 | { | |
2566 | /* We're calculating the final field value. Add in the symbol's value | |
2567 | and, if pc-relative, subtract the address of the field itself. */ | |
2568 | val += symbol->value; | |
2569 | if (reloc_entry->howto->pc_relative) | |
2570 | { | |
2571 | val -= input_section->output_section->vma; | |
2572 | val -= input_section->output_offset; | |
2573 | val -= reloc_entry->address; | |
2574 | } | |
2575 | } | |
2576 | ||
2577 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2578 | in the output file, and if the relocation uses a separate addend, | |
2579 | we just need to add VAL to that addend. Otherwise we need to add | |
2580 | VAL to the relocation field itself. */ | |
2581 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2582 | reloc_entry->addend += val; | |
2583 | else | |
2584 | { | |
d6f16593 MR |
2585 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2586 | ||
30ac9238 RS |
2587 | /* Add in the separate addend, if any. */ |
2588 | val += reloc_entry->addend; | |
2589 | ||
2590 | /* Add VAL to the relocation field. */ | |
df58fc94 RS |
2591 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2592 | location); | |
30ac9238 | 2593 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2594 | location); |
df58fc94 RS |
2595 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, |
2596 | location); | |
d6f16593 | 2597 | |
30ac9238 RS |
2598 | if (status != bfd_reloc_ok) |
2599 | return status; | |
2600 | } | |
2601 | ||
2602 | if (relocatable) | |
2603 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2604 | |
2605 | return bfd_reloc_ok; | |
2606 | } | |
2607 | \f | |
2608 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2609 | on the equivalence of the two elements of the union. */ | |
2610 | ||
2611 | static void | |
9719ad41 RS |
2612 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2613 | Elf32_gptab *in) | |
b49e97c9 TS |
2614 | { |
2615 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2616 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2617 | } | |
2618 | ||
2619 | static void | |
9719ad41 RS |
2620 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2621 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2622 | { |
2623 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2624 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2625 | } | |
2626 | ||
2627 | static void | |
9719ad41 RS |
2628 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2629 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2630 | { |
2631 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2632 | H_PUT_32 (abfd, in->num, ex->num); | |
2633 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2634 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2635 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2636 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2637 | } | |
2638 | ||
2639 | static void | |
9719ad41 RS |
2640 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2641 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2642 | { |
2643 | unsigned long l; | |
2644 | ||
2645 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2646 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2647 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2648 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2649 | H_PUT_32 (abfd, l, ex->info); | |
2650 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2651 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2652 | } | |
b49e97c9 TS |
2653 | \f |
2654 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2655 | routines swap this structure in and out. They are used outside of | |
2656 | BFD, so they are globally visible. */ | |
2657 | ||
2658 | void | |
9719ad41 RS |
2659 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2660 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2661 | { |
2662 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2663 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2664 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2665 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2666 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2667 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2668 | } | |
2669 | ||
2670 | void | |
9719ad41 RS |
2671 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2672 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2673 | { |
2674 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2675 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2676 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2677 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2678 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2679 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2680 | } | |
2681 | ||
2682 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2683 | information in an Elf64_Reginfo structure. These routines swap | |
2684 | them in and out. They are globally visible because they are used | |
2685 | outside of BFD. These routines are here so that gas can call them | |
2686 | without worrying about whether the 64 bit ABI has been included. */ | |
2687 | ||
2688 | void | |
9719ad41 RS |
2689 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2690 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2691 | { |
2692 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2693 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2694 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2695 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2696 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2697 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2698 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2699 | } | |
2700 | ||
2701 | void | |
9719ad41 RS |
2702 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2703 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2704 | { |
2705 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2706 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2707 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2708 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2709 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2710 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2711 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2712 | } | |
2713 | ||
2714 | /* Swap in an options header. */ | |
2715 | ||
2716 | void | |
9719ad41 RS |
2717 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2718 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2719 | { |
2720 | in->kind = H_GET_8 (abfd, ex->kind); | |
2721 | in->size = H_GET_8 (abfd, ex->size); | |
2722 | in->section = H_GET_16 (abfd, ex->section); | |
2723 | in->info = H_GET_32 (abfd, ex->info); | |
2724 | } | |
2725 | ||
2726 | /* Swap out an options header. */ | |
2727 | ||
2728 | void | |
9719ad41 RS |
2729 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2730 | Elf_External_Options *ex) | |
b49e97c9 TS |
2731 | { |
2732 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2733 | H_PUT_8 (abfd, in->size, ex->size); | |
2734 | H_PUT_16 (abfd, in->section, ex->section); | |
2735 | H_PUT_32 (abfd, in->info, ex->info); | |
2736 | } | |
351cdf24 MF |
2737 | |
2738 | /* Swap in an abiflags structure. */ | |
2739 | ||
2740 | void | |
2741 | bfd_mips_elf_swap_abiflags_v0_in (bfd *abfd, | |
2742 | const Elf_External_ABIFlags_v0 *ex, | |
2743 | Elf_Internal_ABIFlags_v0 *in) | |
2744 | { | |
2745 | in->version = H_GET_16 (abfd, ex->version); | |
2746 | in->isa_level = H_GET_8 (abfd, ex->isa_level); | |
2747 | in->isa_rev = H_GET_8 (abfd, ex->isa_rev); | |
2748 | in->gpr_size = H_GET_8 (abfd, ex->gpr_size); | |
2749 | in->cpr1_size = H_GET_8 (abfd, ex->cpr1_size); | |
2750 | in->cpr2_size = H_GET_8 (abfd, ex->cpr2_size); | |
2751 | in->fp_abi = H_GET_8 (abfd, ex->fp_abi); | |
2752 | in->isa_ext = H_GET_32 (abfd, ex->isa_ext); | |
2753 | in->ases = H_GET_32 (abfd, ex->ases); | |
2754 | in->flags1 = H_GET_32 (abfd, ex->flags1); | |
2755 | in->flags2 = H_GET_32 (abfd, ex->flags2); | |
2756 | } | |
2757 | ||
2758 | /* Swap out an abiflags structure. */ | |
2759 | ||
2760 | void | |
2761 | bfd_mips_elf_swap_abiflags_v0_out (bfd *abfd, | |
2762 | const Elf_Internal_ABIFlags_v0 *in, | |
2763 | Elf_External_ABIFlags_v0 *ex) | |
2764 | { | |
2765 | H_PUT_16 (abfd, in->version, ex->version); | |
2766 | H_PUT_8 (abfd, in->isa_level, ex->isa_level); | |
2767 | H_PUT_8 (abfd, in->isa_rev, ex->isa_rev); | |
2768 | H_PUT_8 (abfd, in->gpr_size, ex->gpr_size); | |
2769 | H_PUT_8 (abfd, in->cpr1_size, ex->cpr1_size); | |
2770 | H_PUT_8 (abfd, in->cpr2_size, ex->cpr2_size); | |
2771 | H_PUT_8 (abfd, in->fp_abi, ex->fp_abi); | |
2772 | H_PUT_32 (abfd, in->isa_ext, ex->isa_ext); | |
2773 | H_PUT_32 (abfd, in->ases, ex->ases); | |
2774 | H_PUT_32 (abfd, in->flags1, ex->flags1); | |
2775 | H_PUT_32 (abfd, in->flags2, ex->flags2); | |
2776 | } | |
b49e97c9 TS |
2777 | \f |
2778 | /* This function is called via qsort() to sort the dynamic relocation | |
2779 | entries by increasing r_symndx value. */ | |
2780 | ||
2781 | static int | |
9719ad41 | 2782 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2783 | { |
947216bf AM |
2784 | Elf_Internal_Rela int_reloc1; |
2785 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2786 | int diff; |
b49e97c9 | 2787 | |
947216bf AM |
2788 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2789 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2790 | |
6870500c RS |
2791 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2792 | if (diff != 0) | |
2793 | return diff; | |
2794 | ||
2795 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2796 | return -1; | |
2797 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2798 | return 1; | |
2799 | return 0; | |
b49e97c9 TS |
2800 | } |
2801 | ||
f4416af6 AO |
2802 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2803 | ||
2804 | static int | |
7e3102a7 AM |
2805 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2806 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2807 | { |
7e3102a7 | 2808 | #ifdef BFD64 |
f4416af6 AO |
2809 | Elf_Internal_Rela int_reloc1[3]; |
2810 | Elf_Internal_Rela int_reloc2[3]; | |
2811 | ||
2812 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2813 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2814 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2815 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2816 | ||
6870500c RS |
2817 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2818 | return -1; | |
2819 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2820 | return 1; | |
2821 | ||
2822 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2823 | return -1; | |
2824 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2825 | return 1; | |
2826 | return 0; | |
7e3102a7 AM |
2827 | #else |
2828 | abort (); | |
2829 | #endif | |
f4416af6 AO |
2830 | } |
2831 | ||
2832 | ||
b49e97c9 TS |
2833 | /* This routine is used to write out ECOFF debugging external symbol |
2834 | information. It is called via mips_elf_link_hash_traverse. The | |
2835 | ECOFF external symbol information must match the ELF external | |
2836 | symbol information. Unfortunately, at this point we don't know | |
2837 | whether a symbol is required by reloc information, so the two | |
2838 | tables may wind up being different. We must sort out the external | |
2839 | symbol information before we can set the final size of the .mdebug | |
2840 | section, and we must set the size of the .mdebug section before we | |
2841 | can relocate any sections, and we can't know which symbols are | |
2842 | required by relocation until we relocate the sections. | |
2843 | Fortunately, it is relatively unlikely that any symbol will be | |
2844 | stripped but required by a reloc. In particular, it can not happen | |
2845 | when generating a final executable. */ | |
2846 | ||
b34976b6 | 2847 | static bfd_boolean |
9719ad41 | 2848 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2849 | { |
9719ad41 | 2850 | struct extsym_info *einfo = data; |
b34976b6 | 2851 | bfd_boolean strip; |
b49e97c9 TS |
2852 | asection *sec, *output_section; |
2853 | ||
b49e97c9 | 2854 | if (h->root.indx == -2) |
b34976b6 | 2855 | strip = FALSE; |
f5385ebf | 2856 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2857 | || h->root.ref_dynamic |
2858 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2859 | && !h->root.def_regular |
2860 | && !h->root.ref_regular) | |
b34976b6 | 2861 | strip = TRUE; |
b49e97c9 TS |
2862 | else if (einfo->info->strip == strip_all |
2863 | || (einfo->info->strip == strip_some | |
2864 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2865 | h->root.root.root.string, | |
b34976b6 AM |
2866 | FALSE, FALSE) == NULL)) |
2867 | strip = TRUE; | |
b49e97c9 | 2868 | else |
b34976b6 | 2869 | strip = FALSE; |
b49e97c9 TS |
2870 | |
2871 | if (strip) | |
b34976b6 | 2872 | return TRUE; |
b49e97c9 TS |
2873 | |
2874 | if (h->esym.ifd == -2) | |
2875 | { | |
2876 | h->esym.jmptbl = 0; | |
2877 | h->esym.cobol_main = 0; | |
2878 | h->esym.weakext = 0; | |
2879 | h->esym.reserved = 0; | |
2880 | h->esym.ifd = ifdNil; | |
2881 | h->esym.asym.value = 0; | |
2882 | h->esym.asym.st = stGlobal; | |
2883 | ||
2884 | if (h->root.root.type == bfd_link_hash_undefined | |
2885 | || h->root.root.type == bfd_link_hash_undefweak) | |
2886 | { | |
2887 | const char *name; | |
2888 | ||
2889 | /* Use undefined class. Also, set class and type for some | |
07d6d2b8 | 2890 | special symbols. */ |
b49e97c9 TS |
2891 | name = h->root.root.root.string; |
2892 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2893 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2894 | { | |
2895 | h->esym.asym.sc = scData; | |
2896 | h->esym.asym.st = stLabel; | |
2897 | h->esym.asym.value = 0; | |
2898 | } | |
2899 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2900 | { | |
2901 | h->esym.asym.sc = scAbs; | |
2902 | h->esym.asym.st = stLabel; | |
2903 | h->esym.asym.value = | |
2904 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2905 | } | |
b49e97c9 TS |
2906 | else |
2907 | h->esym.asym.sc = scUndefined; | |
2908 | } | |
2909 | else if (h->root.root.type != bfd_link_hash_defined | |
2910 | && h->root.root.type != bfd_link_hash_defweak) | |
2911 | h->esym.asym.sc = scAbs; | |
2912 | else | |
2913 | { | |
2914 | const char *name; | |
2915 | ||
2916 | sec = h->root.root.u.def.section; | |
2917 | output_section = sec->output_section; | |
2918 | ||
2919 | /* When making a shared library and symbol h is the one from | |
2920 | the another shared library, OUTPUT_SECTION may be null. */ | |
2921 | if (output_section == NULL) | |
2922 | h->esym.asym.sc = scUndefined; | |
2923 | else | |
2924 | { | |
2925 | name = bfd_section_name (output_section->owner, output_section); | |
2926 | ||
2927 | if (strcmp (name, ".text") == 0) | |
2928 | h->esym.asym.sc = scText; | |
2929 | else if (strcmp (name, ".data") == 0) | |
2930 | h->esym.asym.sc = scData; | |
2931 | else if (strcmp (name, ".sdata") == 0) | |
2932 | h->esym.asym.sc = scSData; | |
2933 | else if (strcmp (name, ".rodata") == 0 | |
2934 | || strcmp (name, ".rdata") == 0) | |
2935 | h->esym.asym.sc = scRData; | |
2936 | else if (strcmp (name, ".bss") == 0) | |
2937 | h->esym.asym.sc = scBss; | |
2938 | else if (strcmp (name, ".sbss") == 0) | |
2939 | h->esym.asym.sc = scSBss; | |
2940 | else if (strcmp (name, ".init") == 0) | |
2941 | h->esym.asym.sc = scInit; | |
2942 | else if (strcmp (name, ".fini") == 0) | |
2943 | h->esym.asym.sc = scFini; | |
2944 | else | |
2945 | h->esym.asym.sc = scAbs; | |
2946 | } | |
2947 | } | |
2948 | ||
2949 | h->esym.asym.reserved = 0; | |
2950 | h->esym.asym.index = indexNil; | |
2951 | } | |
2952 | ||
2953 | if (h->root.root.type == bfd_link_hash_common) | |
2954 | h->esym.asym.value = h->root.root.u.c.size; | |
2955 | else if (h->root.root.type == bfd_link_hash_defined | |
2956 | || h->root.root.type == bfd_link_hash_defweak) | |
2957 | { | |
2958 | if (h->esym.asym.sc == scCommon) | |
2959 | h->esym.asym.sc = scBss; | |
2960 | else if (h->esym.asym.sc == scSCommon) | |
2961 | h->esym.asym.sc = scSBss; | |
2962 | ||
2963 | sec = h->root.root.u.def.section; | |
2964 | output_section = sec->output_section; | |
2965 | if (output_section != NULL) | |
2966 | h->esym.asym.value = (h->root.root.u.def.value | |
2967 | + sec->output_offset | |
2968 | + output_section->vma); | |
2969 | else | |
2970 | h->esym.asym.value = 0; | |
2971 | } | |
33bb52fb | 2972 | else |
b49e97c9 TS |
2973 | { |
2974 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2975 | |
2976 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2977 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2978 | |
33bb52fb | 2979 | if (hd->needs_lazy_stub) |
b49e97c9 | 2980 | { |
1bbce132 MR |
2981 | BFD_ASSERT (hd->root.plt.plist != NULL); |
2982 | BFD_ASSERT (hd->root.plt.plist->stub_offset != MINUS_ONE); | |
b49e97c9 TS |
2983 | /* Set type and value for a symbol with a function stub. */ |
2984 | h->esym.asym.st = stProc; | |
2985 | sec = hd->root.root.u.def.section; | |
2986 | if (sec == NULL) | |
2987 | h->esym.asym.value = 0; | |
2988 | else | |
2989 | { | |
2990 | output_section = sec->output_section; | |
2991 | if (output_section != NULL) | |
1bbce132 | 2992 | h->esym.asym.value = (hd->root.plt.plist->stub_offset |
b49e97c9 TS |
2993 | + sec->output_offset |
2994 | + output_section->vma); | |
2995 | else | |
2996 | h->esym.asym.value = 0; | |
2997 | } | |
b49e97c9 TS |
2998 | } |
2999 | } | |
3000 | ||
3001 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
3002 | h->root.root.root.string, | |
3003 | &h->esym)) | |
3004 | { | |
b34976b6 AM |
3005 | einfo->failed = TRUE; |
3006 | return FALSE; | |
b49e97c9 TS |
3007 | } |
3008 | ||
b34976b6 | 3009 | return TRUE; |
b49e97c9 TS |
3010 | } |
3011 | ||
3012 | /* A comparison routine used to sort .gptab entries. */ | |
3013 | ||
3014 | static int | |
9719ad41 | 3015 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 3016 | { |
9719ad41 RS |
3017 | const Elf32_gptab *a1 = p1; |
3018 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
3019 | |
3020 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
3021 | } | |
3022 | \f | |
b15e6682 | 3023 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
3024 | |
3025 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
3026 | hash number. */ | |
3027 | ||
3028 | static INLINE hashval_t | |
9719ad41 | 3029 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
3030 | { |
3031 | #ifdef BFD64 | |
3032 | return addr + (addr >> 32); | |
3033 | #else | |
3034 | return addr; | |
3035 | #endif | |
3036 | } | |
3037 | ||
f4416af6 | 3038 | static hashval_t |
d9bf376d | 3039 | mips_elf_got_entry_hash (const void *entry_) |
f4416af6 AO |
3040 | { |
3041 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
3042 | ||
e641e783 | 3043 | return (entry->symndx |
9ab066b4 RS |
3044 | + ((entry->tls_type == GOT_TLS_LDM) << 18) |
3045 | + (entry->tls_type == GOT_TLS_LDM ? 0 | |
e641e783 RS |
3046 | : !entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
3047 | : entry->symndx >= 0 ? (entry->abfd->id | |
3048 | + mips_elf_hash_bfd_vma (entry->d.addend)) | |
3049 | : entry->d.h->root.root.root.hash)); | |
f4416af6 AO |
3050 | } |
3051 | ||
3052 | static int | |
3dff0dd1 | 3053 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3054 | { |
3055 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
3056 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
3057 | ||
e641e783 | 3058 | return (e1->symndx == e2->symndx |
9ab066b4 RS |
3059 | && e1->tls_type == e2->tls_type |
3060 | && (e1->tls_type == GOT_TLS_LDM ? TRUE | |
e641e783 RS |
3061 | : !e1->abfd ? !e2->abfd && e1->d.address == e2->d.address |
3062 | : e1->symndx >= 0 ? (e1->abfd == e2->abfd | |
3063 | && e1->d.addend == e2->d.addend) | |
3064 | : e2->abfd && e1->d.h == e2->d.h)); | |
b15e6682 | 3065 | } |
c224138d | 3066 | |
13db6b44 RS |
3067 | static hashval_t |
3068 | mips_got_page_ref_hash (const void *ref_) | |
3069 | { | |
3070 | const struct mips_got_page_ref *ref; | |
3071 | ||
3072 | ref = (const struct mips_got_page_ref *) ref_; | |
3073 | return ((ref->symndx >= 0 | |
3074 | ? (hashval_t) (ref->u.abfd->id + ref->symndx) | |
3075 | : ref->u.h->root.root.root.hash) | |
3076 | + mips_elf_hash_bfd_vma (ref->addend)); | |
3077 | } | |
3078 | ||
3079 | static int | |
3080 | mips_got_page_ref_eq (const void *ref1_, const void *ref2_) | |
3081 | { | |
3082 | const struct mips_got_page_ref *ref1, *ref2; | |
3083 | ||
3084 | ref1 = (const struct mips_got_page_ref *) ref1_; | |
3085 | ref2 = (const struct mips_got_page_ref *) ref2_; | |
3086 | return (ref1->symndx == ref2->symndx | |
3087 | && (ref1->symndx < 0 | |
3088 | ? ref1->u.h == ref2->u.h | |
3089 | : ref1->u.abfd == ref2->u.abfd) | |
3090 | && ref1->addend == ref2->addend); | |
3091 | } | |
3092 | ||
c224138d RS |
3093 | static hashval_t |
3094 | mips_got_page_entry_hash (const void *entry_) | |
3095 | { | |
3096 | const struct mips_got_page_entry *entry; | |
3097 | ||
3098 | entry = (const struct mips_got_page_entry *) entry_; | |
13db6b44 | 3099 | return entry->sec->id; |
c224138d RS |
3100 | } |
3101 | ||
3102 | static int | |
3103 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
3104 | { | |
3105 | const struct mips_got_page_entry *entry1, *entry2; | |
3106 | ||
3107 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
3108 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
13db6b44 | 3109 | return entry1->sec == entry2->sec; |
c224138d | 3110 | } |
b15e6682 | 3111 | \f |
3dff0dd1 | 3112 | /* Create and return a new mips_got_info structure. */ |
5334aa52 RS |
3113 | |
3114 | static struct mips_got_info * | |
3dff0dd1 | 3115 | mips_elf_create_got_info (bfd *abfd) |
5334aa52 RS |
3116 | { |
3117 | struct mips_got_info *g; | |
3118 | ||
3119 | g = bfd_zalloc (abfd, sizeof (struct mips_got_info)); | |
3120 | if (g == NULL) | |
3121 | return NULL; | |
3122 | ||
3dff0dd1 RS |
3123 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
3124 | mips_elf_got_entry_eq, NULL); | |
5334aa52 RS |
3125 | if (g->got_entries == NULL) |
3126 | return NULL; | |
3127 | ||
13db6b44 RS |
3128 | g->got_page_refs = htab_try_create (1, mips_got_page_ref_hash, |
3129 | mips_got_page_ref_eq, NULL); | |
3130 | if (g->got_page_refs == NULL) | |
5334aa52 RS |
3131 | return NULL; |
3132 | ||
3133 | return g; | |
3134 | } | |
3135 | ||
ee227692 RS |
3136 | /* Return the GOT info for input bfd ABFD, trying to create a new one if |
3137 | CREATE_P and if ABFD doesn't already have a GOT. */ | |
3138 | ||
3139 | static struct mips_got_info * | |
3140 | mips_elf_bfd_got (bfd *abfd, bfd_boolean create_p) | |
3141 | { | |
3142 | struct mips_elf_obj_tdata *tdata; | |
3143 | ||
3144 | if (!is_mips_elf (abfd)) | |
3145 | return NULL; | |
3146 | ||
3147 | tdata = mips_elf_tdata (abfd); | |
3148 | if (!tdata->got && create_p) | |
3dff0dd1 | 3149 | tdata->got = mips_elf_create_got_info (abfd); |
ee227692 RS |
3150 | return tdata->got; |
3151 | } | |
3152 | ||
d7206569 RS |
3153 | /* Record that ABFD should use output GOT G. */ |
3154 | ||
3155 | static void | |
3156 | mips_elf_replace_bfd_got (bfd *abfd, struct mips_got_info *g) | |
3157 | { | |
3158 | struct mips_elf_obj_tdata *tdata; | |
3159 | ||
3160 | BFD_ASSERT (is_mips_elf (abfd)); | |
3161 | tdata = mips_elf_tdata (abfd); | |
3162 | if (tdata->got) | |
3163 | { | |
3164 | /* The GOT structure itself and the hash table entries are | |
3165 | allocated to a bfd, but the hash tables aren't. */ | |
3166 | htab_delete (tdata->got->got_entries); | |
13db6b44 RS |
3167 | htab_delete (tdata->got->got_page_refs); |
3168 | if (tdata->got->got_page_entries) | |
3169 | htab_delete (tdata->got->got_page_entries); | |
d7206569 RS |
3170 | } |
3171 | tdata->got = g; | |
3172 | } | |
3173 | ||
0a44bf69 RS |
3174 | /* Return the dynamic relocation section. If it doesn't exist, try to |
3175 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
3176 | if creation fails. */ | |
f4416af6 AO |
3177 | |
3178 | static asection * | |
0a44bf69 | 3179 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 3180 | { |
0a44bf69 | 3181 | const char *dname; |
f4416af6 | 3182 | asection *sreloc; |
0a44bf69 | 3183 | bfd *dynobj; |
f4416af6 | 3184 | |
0a44bf69 RS |
3185 | dname = MIPS_ELF_REL_DYN_NAME (info); |
3186 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 3187 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
3188 | if (sreloc == NULL && create_p) |
3189 | { | |
3d4d4302 AM |
3190 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
3191 | (SEC_ALLOC | |
3192 | | SEC_LOAD | |
3193 | | SEC_HAS_CONTENTS | |
3194 | | SEC_IN_MEMORY | |
3195 | | SEC_LINKER_CREATED | |
3196 | | SEC_READONLY)); | |
f4416af6 | 3197 | if (sreloc == NULL |
f4416af6 | 3198 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 3199 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
3200 | return NULL; |
3201 | } | |
3202 | return sreloc; | |
3203 | } | |
3204 | ||
e641e783 RS |
3205 | /* Return the GOT_TLS_* type required by relocation type R_TYPE. */ |
3206 | ||
3207 | static int | |
3208 | mips_elf_reloc_tls_type (unsigned int r_type) | |
3209 | { | |
3210 | if (tls_gd_reloc_p (r_type)) | |
3211 | return GOT_TLS_GD; | |
3212 | ||
3213 | if (tls_ldm_reloc_p (r_type)) | |
3214 | return GOT_TLS_LDM; | |
3215 | ||
3216 | if (tls_gottprel_reloc_p (r_type)) | |
3217 | return GOT_TLS_IE; | |
3218 | ||
9ab066b4 | 3219 | return GOT_TLS_NONE; |
e641e783 RS |
3220 | } |
3221 | ||
3222 | /* Return the number of GOT slots needed for GOT TLS type TYPE. */ | |
3223 | ||
3224 | static int | |
3225 | mips_tls_got_entries (unsigned int type) | |
3226 | { | |
3227 | switch (type) | |
3228 | { | |
3229 | case GOT_TLS_GD: | |
3230 | case GOT_TLS_LDM: | |
3231 | return 2; | |
3232 | ||
3233 | case GOT_TLS_IE: | |
3234 | return 1; | |
3235 | ||
9ab066b4 | 3236 | case GOT_TLS_NONE: |
e641e783 RS |
3237 | return 0; |
3238 | } | |
3239 | abort (); | |
3240 | } | |
3241 | ||
0f20cc35 DJ |
3242 | /* Count the number of relocations needed for a TLS GOT entry, with |
3243 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
3244 | is NULL). */ | |
3245 | ||
3246 | static int | |
3247 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
3248 | struct elf_link_hash_entry *h) | |
3249 | { | |
3250 | int indx = 0; | |
0f20cc35 DJ |
3251 | bfd_boolean need_relocs = FALSE; |
3252 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3253 | ||
1cb83cac MR |
3254 | if (h != NULL |
3255 | && h->dynindx != -1 | |
3256 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) | |
3257 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
0f20cc35 DJ |
3258 | indx = h->dynindx; |
3259 | ||
9143e72c | 3260 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3261 | && (h == NULL |
3262 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3263 | || h->root.type != bfd_link_hash_undefweak)) | |
3264 | need_relocs = TRUE; | |
3265 | ||
3266 | if (!need_relocs) | |
e641e783 | 3267 | return 0; |
0f20cc35 | 3268 | |
9ab066b4 | 3269 | switch (tls_type) |
0f20cc35 | 3270 | { |
e641e783 RS |
3271 | case GOT_TLS_GD: |
3272 | return indx != 0 ? 2 : 1; | |
0f20cc35 | 3273 | |
e641e783 RS |
3274 | case GOT_TLS_IE: |
3275 | return 1; | |
0f20cc35 | 3276 | |
e641e783 | 3277 | case GOT_TLS_LDM: |
9143e72c | 3278 | return bfd_link_dll (info) ? 1 : 0; |
0f20cc35 | 3279 | |
e641e783 RS |
3280 | default: |
3281 | return 0; | |
3282 | } | |
0f20cc35 DJ |
3283 | } |
3284 | ||
ab361d49 RS |
3285 | /* Add the number of GOT entries and TLS relocations required by ENTRY |
3286 | to G. */ | |
0f20cc35 | 3287 | |
ab361d49 RS |
3288 | static void |
3289 | mips_elf_count_got_entry (struct bfd_link_info *info, | |
3290 | struct mips_got_info *g, | |
3291 | struct mips_got_entry *entry) | |
0f20cc35 | 3292 | { |
9ab066b4 | 3293 | if (entry->tls_type) |
ab361d49 | 3294 | { |
9ab066b4 RS |
3295 | g->tls_gotno += mips_tls_got_entries (entry->tls_type); |
3296 | g->relocs += mips_tls_got_relocs (info, entry->tls_type, | |
ab361d49 RS |
3297 | entry->symndx < 0 |
3298 | ? &entry->d.h->root : NULL); | |
3299 | } | |
3300 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) | |
3301 | g->local_gotno += 1; | |
3302 | else | |
3303 | g->global_gotno += 1; | |
0f20cc35 DJ |
3304 | } |
3305 | ||
0f20cc35 DJ |
3306 | /* Output a simple dynamic relocation into SRELOC. */ |
3307 | ||
3308 | static void | |
3309 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3310 | asection *sreloc, | |
861fb55a | 3311 | unsigned long reloc_index, |
0f20cc35 DJ |
3312 | unsigned long indx, |
3313 | int r_type, | |
3314 | bfd_vma offset) | |
3315 | { | |
3316 | Elf_Internal_Rela rel[3]; | |
3317 | ||
3318 | memset (rel, 0, sizeof (rel)); | |
3319 | ||
3320 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3321 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3322 | ||
3323 | if (ABI_64_P (output_bfd)) | |
3324 | { | |
3325 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3326 | (output_bfd, &rel[0], | |
3327 | (sreloc->contents | |
861fb55a | 3328 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3329 | } |
3330 | else | |
3331 | bfd_elf32_swap_reloc_out | |
3332 | (output_bfd, &rel[0], | |
3333 | (sreloc->contents | |
861fb55a | 3334 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3335 | } |
3336 | ||
3337 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3338 | ||
3339 | static void | |
9ab066b4 RS |
3340 | mips_elf_initialize_tls_slots (bfd *abfd, struct bfd_link_info *info, |
3341 | struct mips_got_entry *entry, | |
0f20cc35 DJ |
3342 | struct mips_elf_link_hash_entry *h, |
3343 | bfd_vma value) | |
3344 | { | |
1cb83cac | 3345 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; |
23cc69b6 | 3346 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3347 | int indx; |
3348 | asection *sreloc, *sgot; | |
9ab066b4 | 3349 | bfd_vma got_offset, got_offset2; |
0f20cc35 DJ |
3350 | bfd_boolean need_relocs = FALSE; |
3351 | ||
23cc69b6 | 3352 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3353 | if (htab == NULL) |
3354 | return; | |
3355 | ||
ce558b89 | 3356 | sgot = htab->root.sgot; |
0f20cc35 DJ |
3357 | |
3358 | indx = 0; | |
1cb83cac MR |
3359 | if (h != NULL |
3360 | && h->root.dynindx != -1 | |
3361 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), &h->root) | |
3362 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3363 | indx = h->root.dynindx; | |
0f20cc35 | 3364 | |
9ab066b4 | 3365 | if (entry->tls_initialized) |
0f20cc35 DJ |
3366 | return; |
3367 | ||
9143e72c | 3368 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3369 | && (h == NULL |
3370 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3371 | || h->root.type != bfd_link_hash_undefweak)) | |
3372 | need_relocs = TRUE; | |
3373 | ||
3374 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3375 | be defined at all; assume that the value doesn't matter in that | |
3376 | case. Otherwise complain if we would use the value. */ | |
3377 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3378 | || h->root.root.type == bfd_link_hash_undefweak); | |
3379 | ||
3380 | /* Emit necessary relocations. */ | |
0a44bf69 | 3381 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
9ab066b4 | 3382 | got_offset = entry->gotidx; |
0f20cc35 | 3383 | |
9ab066b4 | 3384 | switch (entry->tls_type) |
0f20cc35 | 3385 | { |
e641e783 RS |
3386 | case GOT_TLS_GD: |
3387 | /* General Dynamic. */ | |
3388 | got_offset2 = got_offset + MIPS_ELF_GOT_SIZE (abfd); | |
0f20cc35 DJ |
3389 | |
3390 | if (need_relocs) | |
3391 | { | |
3392 | mips_elf_output_dynamic_relocation | |
861fb55a | 3393 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3394 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
e641e783 | 3395 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3396 | |
3397 | if (indx) | |
3398 | mips_elf_output_dynamic_relocation | |
861fb55a | 3399 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3400 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
e641e783 | 3401 | sgot->output_offset + sgot->output_section->vma + got_offset2); |
0f20cc35 DJ |
3402 | else |
3403 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
e641e783 | 3404 | sgot->contents + got_offset2); |
0f20cc35 DJ |
3405 | } |
3406 | else | |
3407 | { | |
3408 | MIPS_ELF_PUT_WORD (abfd, 1, | |
e641e783 | 3409 | sgot->contents + got_offset); |
0f20cc35 | 3410 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), |
e641e783 | 3411 | sgot->contents + got_offset2); |
0f20cc35 | 3412 | } |
e641e783 | 3413 | break; |
0f20cc35 | 3414 | |
e641e783 RS |
3415 | case GOT_TLS_IE: |
3416 | /* Initial Exec model. */ | |
0f20cc35 DJ |
3417 | if (need_relocs) |
3418 | { | |
3419 | if (indx == 0) | |
3420 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
e641e783 | 3421 | sgot->contents + got_offset); |
0f20cc35 DJ |
3422 | else |
3423 | MIPS_ELF_PUT_WORD (abfd, 0, | |
e641e783 | 3424 | sgot->contents + got_offset); |
0f20cc35 DJ |
3425 | |
3426 | mips_elf_output_dynamic_relocation | |
861fb55a | 3427 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3428 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
e641e783 | 3429 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3430 | } |
3431 | else | |
3432 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
e641e783 RS |
3433 | sgot->contents + got_offset); |
3434 | break; | |
0f20cc35 | 3435 | |
e641e783 | 3436 | case GOT_TLS_LDM: |
0f20cc35 DJ |
3437 | /* The initial offset is zero, and the LD offsets will include the |
3438 | bias by DTP_OFFSET. */ | |
3439 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3440 | sgot->contents + got_offset | |
3441 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3442 | ||
9143e72c | 3443 | if (!bfd_link_dll (info)) |
0f20cc35 DJ |
3444 | MIPS_ELF_PUT_WORD (abfd, 1, |
3445 | sgot->contents + got_offset); | |
3446 | else | |
3447 | mips_elf_output_dynamic_relocation | |
861fb55a | 3448 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3449 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3450 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
e641e783 RS |
3451 | break; |
3452 | ||
3453 | default: | |
3454 | abort (); | |
0f20cc35 DJ |
3455 | } |
3456 | ||
9ab066b4 | 3457 | entry->tls_initialized = TRUE; |
e641e783 | 3458 | } |
0f20cc35 | 3459 | |
0a44bf69 RS |
3460 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3461 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3462 | will be negative. */ | |
3463 | ||
3464 | static bfd_vma | |
3465 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3466 | struct elf_link_hash_entry *h) | |
3467 | { | |
1bbce132 | 3468 | bfd_vma got_address, got_value; |
0a44bf69 RS |
3469 | struct mips_elf_link_hash_table *htab; |
3470 | ||
3471 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3472 | BFD_ASSERT (htab != NULL); |
3473 | ||
1bbce132 MR |
3474 | BFD_ASSERT (h->plt.plist != NULL); |
3475 | BFD_ASSERT (h->plt.plist->gotplt_index != MINUS_ONE); | |
0a44bf69 RS |
3476 | |
3477 | /* Calculate the address of the associated .got.plt entry. */ | |
ce558b89 AM |
3478 | got_address = (htab->root.sgotplt->output_section->vma |
3479 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
3480 | + (h->plt.plist->gotplt_index |
3481 | * MIPS_ELF_GOT_SIZE (info->output_bfd))); | |
0a44bf69 RS |
3482 | |
3483 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3484 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3485 | + htab->root.hgot->root.u.def.section->output_offset | |
3486 | + htab->root.hgot->root.u.def.value); | |
3487 | ||
3488 | return got_address - got_value; | |
3489 | } | |
3490 | ||
5c18022e | 3491 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3492 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3493 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3494 | offset can be found. */ | |
b49e97c9 TS |
3495 | |
3496 | static bfd_vma | |
9719ad41 | 3497 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3498 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3499 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3500 | { |
a8028dd0 | 3501 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3502 | struct mips_got_entry *entry; |
b49e97c9 | 3503 | |
a8028dd0 | 3504 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3505 | BFD_ASSERT (htab != NULL); |
3506 | ||
a8028dd0 RS |
3507 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3508 | r_symndx, h, r_type); | |
0f20cc35 | 3509 | if (!entry) |
b15e6682 | 3510 | return MINUS_ONE; |
0f20cc35 | 3511 | |
e641e783 | 3512 | if (entry->tls_type) |
9ab066b4 RS |
3513 | mips_elf_initialize_tls_slots (abfd, info, entry, h, value); |
3514 | return entry->gotidx; | |
b49e97c9 TS |
3515 | } |
3516 | ||
13fbec83 | 3517 | /* Return the GOT index of global symbol H in the primary GOT. */ |
b49e97c9 TS |
3518 | |
3519 | static bfd_vma | |
13fbec83 RS |
3520 | mips_elf_primary_global_got_index (bfd *obfd, struct bfd_link_info *info, |
3521 | struct elf_link_hash_entry *h) | |
3522 | { | |
3523 | struct mips_elf_link_hash_table *htab; | |
3524 | long global_got_dynindx; | |
3525 | struct mips_got_info *g; | |
3526 | bfd_vma got_index; | |
3527 | ||
3528 | htab = mips_elf_hash_table (info); | |
3529 | BFD_ASSERT (htab != NULL); | |
3530 | ||
3531 | global_got_dynindx = 0; | |
3532 | if (htab->global_gotsym != NULL) | |
3533 | global_got_dynindx = htab->global_gotsym->dynindx; | |
3534 | ||
3535 | /* Once we determine the global GOT entry with the lowest dynamic | |
3536 | symbol table index, we must put all dynamic symbols with greater | |
3537 | indices into the primary GOT. That makes it easy to calculate the | |
3538 | GOT offset. */ | |
3539 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
3540 | g = mips_elf_bfd_got (obfd, FALSE); | |
3541 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) | |
3542 | * MIPS_ELF_GOT_SIZE (obfd)); | |
ce558b89 | 3543 | BFD_ASSERT (got_index < htab->root.sgot->size); |
13fbec83 RS |
3544 | |
3545 | return got_index; | |
3546 | } | |
3547 | ||
3548 | /* Return the GOT index for the global symbol indicated by H, which is | |
3549 | referenced by a relocation of type R_TYPE in IBFD. */ | |
3550 | ||
3551 | static bfd_vma | |
3552 | mips_elf_global_got_index (bfd *obfd, struct bfd_link_info *info, bfd *ibfd, | |
3553 | struct elf_link_hash_entry *h, int r_type) | |
b49e97c9 | 3554 | { |
a8028dd0 | 3555 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 RS |
3556 | struct mips_got_info *g; |
3557 | struct mips_got_entry lookup, *entry; | |
3558 | bfd_vma gotidx; | |
b49e97c9 | 3559 | |
a8028dd0 | 3560 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3561 | BFD_ASSERT (htab != NULL); |
3562 | ||
6c42ddb9 RS |
3563 | g = mips_elf_bfd_got (ibfd, FALSE); |
3564 | BFD_ASSERT (g); | |
f4416af6 | 3565 | |
6c42ddb9 RS |
3566 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3567 | if (!lookup.tls_type && g == mips_elf_bfd_got (obfd, FALSE)) | |
3568 | return mips_elf_primary_global_got_index (obfd, info, h); | |
f4416af6 | 3569 | |
6c42ddb9 RS |
3570 | lookup.abfd = ibfd; |
3571 | lookup.symndx = -1; | |
3572 | lookup.d.h = (struct mips_elf_link_hash_entry *) h; | |
3573 | entry = htab_find (g->got_entries, &lookup); | |
3574 | BFD_ASSERT (entry); | |
0f20cc35 | 3575 | |
6c42ddb9 | 3576 | gotidx = entry->gotidx; |
ce558b89 | 3577 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
f4416af6 | 3578 | |
6c42ddb9 | 3579 | if (lookup.tls_type) |
0f20cc35 | 3580 | { |
0f20cc35 DJ |
3581 | bfd_vma value = MINUS_ONE; |
3582 | ||
3583 | if ((h->root.type == bfd_link_hash_defined | |
3584 | || h->root.type == bfd_link_hash_defweak) | |
3585 | && h->root.u.def.section->output_section) | |
3586 | value = (h->root.u.def.value | |
3587 | + h->root.u.def.section->output_offset | |
3588 | + h->root.u.def.section->output_section->vma); | |
3589 | ||
9ab066b4 | 3590 | mips_elf_initialize_tls_slots (obfd, info, entry, lookup.d.h, value); |
0f20cc35 | 3591 | } |
6c42ddb9 | 3592 | return gotidx; |
b49e97c9 TS |
3593 | } |
3594 | ||
5c18022e RS |
3595 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3596 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3597 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3598 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3599 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3600 | |
3601 | static bfd_vma | |
9719ad41 | 3602 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3603 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3604 | { |
91d6fa6a | 3605 | bfd_vma page, got_index; |
b15e6682 | 3606 | struct mips_got_entry *entry; |
b49e97c9 | 3607 | |
0a44bf69 | 3608 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3609 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3610 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3611 | |
b15e6682 AO |
3612 | if (!entry) |
3613 | return MINUS_ONE; | |
143d77c5 | 3614 | |
91d6fa6a | 3615 | got_index = entry->gotidx; |
b49e97c9 TS |
3616 | |
3617 | if (offsetp) | |
f4416af6 | 3618 | *offsetp = value - entry->d.address; |
b49e97c9 | 3619 | |
91d6fa6a | 3620 | return got_index; |
b49e97c9 TS |
3621 | } |
3622 | ||
738e5348 | 3623 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3624 | EXTERNAL is true if the relocation was originally against a global |
3625 | symbol that binds locally. */ | |
b49e97c9 TS |
3626 | |
3627 | static bfd_vma | |
9719ad41 | 3628 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3629 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3630 | { |
b15e6682 | 3631 | struct mips_got_entry *entry; |
b49e97c9 | 3632 | |
0a44bf69 RS |
3633 | /* GOT16 relocations against local symbols are followed by a LO16 |
3634 | relocation; those against global symbols are not. Thus if the | |
3635 | symbol was originally local, the GOT16 relocation should load the | |
3636 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3637 | if (! external) |
0a44bf69 | 3638 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3639 | |
738e5348 RS |
3640 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3641 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3642 | same in all cases. */ | |
a8028dd0 RS |
3643 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3644 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3645 | if (entry) |
3646 | return entry->gotidx; | |
3647 | else | |
3648 | return MINUS_ONE; | |
b49e97c9 TS |
3649 | } |
3650 | ||
3651 | /* Returns the offset for the entry at the INDEXth position | |
3652 | in the GOT. */ | |
3653 | ||
3654 | static bfd_vma | |
a8028dd0 | 3655 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3656 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3657 | { |
a8028dd0 | 3658 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3659 | asection *sgot; |
3660 | bfd_vma gp; | |
3661 | ||
a8028dd0 | 3662 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3663 | BFD_ASSERT (htab != NULL); |
3664 | ||
ce558b89 | 3665 | sgot = htab->root.sgot; |
f4416af6 | 3666 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3667 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3668 | |
91d6fa6a | 3669 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3670 | } |
3671 | ||
0a44bf69 RS |
3672 | /* Create and return a local GOT entry for VALUE, which was calculated |
3673 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3674 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3675 | instead. */ | |
b49e97c9 | 3676 | |
b15e6682 | 3677 | static struct mips_got_entry * |
0a44bf69 | 3678 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3679 | bfd *ibfd, bfd_vma value, |
5c18022e | 3680 | unsigned long r_symndx, |
0f20cc35 DJ |
3681 | struct mips_elf_link_hash_entry *h, |
3682 | int r_type) | |
b49e97c9 | 3683 | { |
ebc53538 RS |
3684 | struct mips_got_entry lookup, *entry; |
3685 | void **loc; | |
f4416af6 | 3686 | struct mips_got_info *g; |
0a44bf69 | 3687 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 | 3688 | bfd_vma gotidx; |
0a44bf69 RS |
3689 | |
3690 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3691 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3692 | |
d7206569 | 3693 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
3694 | if (g == NULL) |
3695 | { | |
d7206569 | 3696 | g = mips_elf_bfd_got (abfd, FALSE); |
f4416af6 AO |
3697 | BFD_ASSERT (g != NULL); |
3698 | } | |
b15e6682 | 3699 | |
020d7251 RS |
3700 | /* This function shouldn't be called for symbols that live in the global |
3701 | area of the GOT. */ | |
3702 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 | 3703 | |
ebc53538 RS |
3704 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3705 | if (lookup.tls_type) | |
3706 | { | |
3707 | lookup.abfd = ibfd; | |
df58fc94 | 3708 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 3709 | { |
ebc53538 RS |
3710 | lookup.symndx = 0; |
3711 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3712 | } |
3713 | else if (h == NULL) | |
3714 | { | |
ebc53538 RS |
3715 | lookup.symndx = r_symndx; |
3716 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3717 | } |
3718 | else | |
ebc53538 RS |
3719 | { |
3720 | lookup.symndx = -1; | |
3721 | lookup.d.h = h; | |
3722 | } | |
0f20cc35 | 3723 | |
ebc53538 RS |
3724 | entry = (struct mips_got_entry *) htab_find (g->got_entries, &lookup); |
3725 | BFD_ASSERT (entry); | |
0f20cc35 | 3726 | |
6c42ddb9 | 3727 | gotidx = entry->gotidx; |
ce558b89 | 3728 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
6c42ddb9 | 3729 | |
ebc53538 | 3730 | return entry; |
0f20cc35 DJ |
3731 | } |
3732 | ||
ebc53538 RS |
3733 | lookup.abfd = NULL; |
3734 | lookup.symndx = -1; | |
3735 | lookup.d.address = value; | |
3736 | loc = htab_find_slot (g->got_entries, &lookup, INSERT); | |
3737 | if (!loc) | |
b15e6682 | 3738 | return NULL; |
143d77c5 | 3739 | |
ebc53538 RS |
3740 | entry = (struct mips_got_entry *) *loc; |
3741 | if (entry) | |
3742 | return entry; | |
b15e6682 | 3743 | |
cb22ccf4 | 3744 | if (g->assigned_low_gotno > g->assigned_high_gotno) |
b49e97c9 TS |
3745 | { |
3746 | /* We didn't allocate enough space in the GOT. */ | |
4eca0228 | 3747 | _bfd_error_handler |
b49e97c9 TS |
3748 | (_("not enough GOT space for local GOT entries")); |
3749 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3750 | return NULL; |
b49e97c9 TS |
3751 | } |
3752 | ||
ebc53538 RS |
3753 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); |
3754 | if (!entry) | |
3755 | return NULL; | |
3756 | ||
cb22ccf4 KCY |
3757 | if (got16_reloc_p (r_type) |
3758 | || call16_reloc_p (r_type) | |
3759 | || got_page_reloc_p (r_type) | |
3760 | || got_disp_reloc_p (r_type)) | |
3761 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_low_gotno++; | |
3762 | else | |
3763 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_high_gotno--; | |
3764 | ||
ebc53538 RS |
3765 | *entry = lookup; |
3766 | *loc = entry; | |
3767 | ||
ce558b89 | 3768 | MIPS_ELF_PUT_WORD (abfd, value, htab->root.sgot->contents + entry->gotidx); |
b15e6682 | 3769 | |
5c18022e | 3770 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3771 | if (htab->is_vxworks) |
3772 | { | |
3773 | Elf_Internal_Rela outrel; | |
5c18022e | 3774 | asection *s; |
91d6fa6a | 3775 | bfd_byte *rloc; |
0a44bf69 | 3776 | bfd_vma got_address; |
0a44bf69 RS |
3777 | |
3778 | s = mips_elf_rel_dyn_section (info, FALSE); | |
ce558b89 AM |
3779 | got_address = (htab->root.sgot->output_section->vma |
3780 | + htab->root.sgot->output_offset | |
ebc53538 | 3781 | + entry->gotidx); |
0a44bf69 | 3782 | |
91d6fa6a | 3783 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3784 | outrel.r_offset = got_address; |
5c18022e RS |
3785 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3786 | outrel.r_addend = value; | |
91d6fa6a | 3787 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3788 | } |
3789 | ||
ebc53538 | 3790 | return entry; |
b49e97c9 TS |
3791 | } |
3792 | ||
d4596a51 RS |
3793 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3794 | The number might be exact or a worst-case estimate, depending on how | |
3795 | much information is available to elf_backend_omit_section_dynsym at | |
3796 | the current linking stage. */ | |
3797 | ||
3798 | static bfd_size_type | |
3799 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3800 | { | |
3801 | bfd_size_type count; | |
3802 | ||
3803 | count = 0; | |
0e1862bb L |
3804 | if (bfd_link_pic (info) |
3805 | || elf_hash_table (info)->is_relocatable_executable) | |
d4596a51 RS |
3806 | { |
3807 | asection *p; | |
3808 | const struct elf_backend_data *bed; | |
3809 | ||
3810 | bed = get_elf_backend_data (output_bfd); | |
3811 | for (p = output_bfd->sections; p ; p = p->next) | |
3812 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3813 | && (p->flags & SEC_ALLOC) != 0 | |
7f923b7f | 3814 | && elf_hash_table (info)->dynamic_relocs |
d4596a51 RS |
3815 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) |
3816 | ++count; | |
3817 | } | |
3818 | return count; | |
3819 | } | |
3820 | ||
b49e97c9 | 3821 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3822 | appear towards the end. */ |
b49e97c9 | 3823 | |
b34976b6 | 3824 | static bfd_boolean |
d4596a51 | 3825 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3826 | { |
a8028dd0 | 3827 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3828 | struct mips_elf_hash_sort_data hsd; |
3829 | struct mips_got_info *g; | |
b49e97c9 | 3830 | |
a8028dd0 | 3831 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3832 | BFD_ASSERT (htab != NULL); |
3833 | ||
0f8c4b60 | 3834 | if (htab->root.dynsymcount == 0) |
17a80fa8 MR |
3835 | return TRUE; |
3836 | ||
a8028dd0 | 3837 | g = htab->got_info; |
d4596a51 RS |
3838 | if (g == NULL) |
3839 | return TRUE; | |
f4416af6 | 3840 | |
b49e97c9 | 3841 | hsd.low = NULL; |
23cc69b6 RS |
3842 | hsd.max_unref_got_dynindx |
3843 | = hsd.min_got_dynindx | |
0f8c4b60 | 3844 | = (htab->root.dynsymcount - g->reloc_only_gotno); |
e17b0c35 MR |
3845 | /* Add 1 to local symbol indices to account for the mandatory NULL entry |
3846 | at the head of the table; see `_bfd_elf_link_renumber_dynsyms'. */ | |
3847 | hsd.max_local_dynindx = count_section_dynsyms (abfd, info) + 1; | |
3848 | hsd.max_non_got_dynindx = htab->root.local_dynsymcount + 1; | |
0f8c4b60 | 3849 | mips_elf_link_hash_traverse (htab, mips_elf_sort_hash_table_f, &hsd); |
b49e97c9 TS |
3850 | |
3851 | /* There should have been enough room in the symbol table to | |
44c410de | 3852 | accommodate both the GOT and non-GOT symbols. */ |
e17b0c35 | 3853 | BFD_ASSERT (hsd.max_local_dynindx <= htab->root.local_dynsymcount + 1); |
b49e97c9 | 3854 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
55f8b9d2 | 3855 | BFD_ASSERT (hsd.max_unref_got_dynindx == htab->root.dynsymcount); |
0f8c4b60 | 3856 | BFD_ASSERT (htab->root.dynsymcount - hsd.min_got_dynindx == g->global_gotno); |
b49e97c9 TS |
3857 | |
3858 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3859 | table index in the GOT. */ | |
d222d210 | 3860 | htab->global_gotsym = hsd.low; |
b49e97c9 | 3861 | |
b34976b6 | 3862 | return TRUE; |
b49e97c9 TS |
3863 | } |
3864 | ||
3865 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3866 | index. Otherwise, assign it the lowest available dynamic | |
3867 | index. */ | |
3868 | ||
b34976b6 | 3869 | static bfd_boolean |
9719ad41 | 3870 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3871 | { |
9719ad41 | 3872 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3873 | |
b49e97c9 TS |
3874 | /* Symbols without dynamic symbol table entries aren't interesting |
3875 | at all. */ | |
3876 | if (h->root.dynindx == -1) | |
b34976b6 | 3877 | return TRUE; |
b49e97c9 | 3878 | |
634835ae | 3879 | switch (h->global_got_area) |
f4416af6 | 3880 | { |
634835ae | 3881 | case GGA_NONE: |
e17b0c35 MR |
3882 | if (h->root.forced_local) |
3883 | h->root.dynindx = hsd->max_local_dynindx++; | |
3884 | else | |
3885 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
634835ae | 3886 | break; |
0f20cc35 | 3887 | |
634835ae | 3888 | case GGA_NORMAL: |
b49e97c9 TS |
3889 | h->root.dynindx = --hsd->min_got_dynindx; |
3890 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3891 | break; |
3892 | ||
3893 | case GGA_RELOC_ONLY: | |
634835ae RS |
3894 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
3895 | hsd->low = (struct elf_link_hash_entry *) h; | |
3896 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3897 | break; | |
b49e97c9 TS |
3898 | } |
3899 | ||
b34976b6 | 3900 | return TRUE; |
b49e97c9 TS |
3901 | } |
3902 | ||
ee227692 RS |
3903 | /* Record that input bfd ABFD requires a GOT entry like *LOOKUP |
3904 | (which is owned by the caller and shouldn't be added to the | |
3905 | hash table directly). */ | |
3906 | ||
3907 | static bfd_boolean | |
3908 | mips_elf_record_got_entry (struct bfd_link_info *info, bfd *abfd, | |
3909 | struct mips_got_entry *lookup) | |
3910 | { | |
3911 | struct mips_elf_link_hash_table *htab; | |
3912 | struct mips_got_entry *entry; | |
3913 | struct mips_got_info *g; | |
3914 | void **loc, **bfd_loc; | |
3915 | ||
3916 | /* Make sure there's a slot for this entry in the master GOT. */ | |
3917 | htab = mips_elf_hash_table (info); | |
3918 | g = htab->got_info; | |
3919 | loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3920 | if (!loc) | |
3921 | return FALSE; | |
3922 | ||
3923 | /* Populate the entry if it isn't already. */ | |
3924 | entry = (struct mips_got_entry *) *loc; | |
3925 | if (!entry) | |
3926 | { | |
3927 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); | |
3928 | if (!entry) | |
3929 | return FALSE; | |
3930 | ||
9ab066b4 | 3931 | lookup->tls_initialized = FALSE; |
ee227692 RS |
3932 | lookup->gotidx = -1; |
3933 | *entry = *lookup; | |
3934 | *loc = entry; | |
3935 | } | |
3936 | ||
3937 | /* Reuse the same GOT entry for the BFD's GOT. */ | |
3938 | g = mips_elf_bfd_got (abfd, TRUE); | |
3939 | if (!g) | |
3940 | return FALSE; | |
3941 | ||
3942 | bfd_loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3943 | if (!bfd_loc) | |
3944 | return FALSE; | |
3945 | ||
3946 | if (!*bfd_loc) | |
3947 | *bfd_loc = entry; | |
3948 | return TRUE; | |
3949 | } | |
3950 | ||
e641e783 RS |
3951 | /* ABFD has a GOT relocation of type R_TYPE against H. Reserve a GOT |
3952 | entry for it. FOR_CALL is true if the caller is only interested in | |
6ccf4795 | 3953 | using the GOT entry for calls. */ |
b49e97c9 | 3954 | |
b34976b6 | 3955 | static bfd_boolean |
9719ad41 RS |
3956 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3957 | bfd *abfd, struct bfd_link_info *info, | |
e641e783 | 3958 | bfd_boolean for_call, int r_type) |
b49e97c9 | 3959 | { |
a8028dd0 | 3960 | struct mips_elf_link_hash_table *htab; |
634835ae | 3961 | struct mips_elf_link_hash_entry *hmips; |
ee227692 RS |
3962 | struct mips_got_entry entry; |
3963 | unsigned char tls_type; | |
a8028dd0 RS |
3964 | |
3965 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3966 | BFD_ASSERT (htab != NULL); |
3967 | ||
634835ae | 3968 | hmips = (struct mips_elf_link_hash_entry *) h; |
6ccf4795 RS |
3969 | if (!for_call) |
3970 | hmips->got_only_for_calls = FALSE; | |
f4416af6 | 3971 | |
b49e97c9 TS |
3972 | /* A global symbol in the GOT must also be in the dynamic symbol |
3973 | table. */ | |
7c5fcef7 L |
3974 | if (h->dynindx == -1) |
3975 | { | |
3976 | switch (ELF_ST_VISIBILITY (h->other)) | |
3977 | { | |
3978 | case STV_INTERNAL: | |
3979 | case STV_HIDDEN: | |
33bb52fb | 3980 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3981 | break; |
3982 | } | |
c152c796 | 3983 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3984 | return FALSE; |
7c5fcef7 | 3985 | } |
b49e97c9 | 3986 | |
ee227692 | 3987 | tls_type = mips_elf_reloc_tls_type (r_type); |
9ab066b4 | 3988 | if (tls_type == GOT_TLS_NONE && hmips->global_got_area > GGA_NORMAL) |
ee227692 | 3989 | hmips->global_got_area = GGA_NORMAL; |
86324f90 | 3990 | |
f4416af6 AO |
3991 | entry.abfd = abfd; |
3992 | entry.symndx = -1; | |
3993 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
ee227692 RS |
3994 | entry.tls_type = tls_type; |
3995 | return mips_elf_record_got_entry (info, abfd, &entry); | |
b49e97c9 | 3996 | } |
f4416af6 | 3997 | |
e641e783 RS |
3998 | /* ABFD has a GOT relocation of type R_TYPE against symbol SYMNDX + ADDEND, |
3999 | where SYMNDX is a local symbol. Reserve a GOT entry for it. */ | |
f4416af6 AO |
4000 | |
4001 | static bfd_boolean | |
9719ad41 | 4002 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
e641e783 | 4003 | struct bfd_link_info *info, int r_type) |
f4416af6 | 4004 | { |
a8028dd0 RS |
4005 | struct mips_elf_link_hash_table *htab; |
4006 | struct mips_got_info *g; | |
ee227692 | 4007 | struct mips_got_entry entry; |
f4416af6 | 4008 | |
a8028dd0 | 4009 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4010 | BFD_ASSERT (htab != NULL); |
4011 | ||
a8028dd0 RS |
4012 | g = htab->got_info; |
4013 | BFD_ASSERT (g != NULL); | |
4014 | ||
f4416af6 AO |
4015 | entry.abfd = abfd; |
4016 | entry.symndx = symndx; | |
4017 | entry.d.addend = addend; | |
e641e783 | 4018 | entry.tls_type = mips_elf_reloc_tls_type (r_type); |
ee227692 | 4019 | return mips_elf_record_got_entry (info, abfd, &entry); |
f4416af6 | 4020 | } |
c224138d | 4021 | |
13db6b44 RS |
4022 | /* Record that ABFD has a page relocation against SYMNDX + ADDEND. |
4023 | H is the symbol's hash table entry, or null if SYMNDX is local | |
4024 | to ABFD. */ | |
c224138d RS |
4025 | |
4026 | static bfd_boolean | |
13db6b44 RS |
4027 | mips_elf_record_got_page_ref (struct bfd_link_info *info, bfd *abfd, |
4028 | long symndx, struct elf_link_hash_entry *h, | |
4029 | bfd_signed_vma addend) | |
c224138d | 4030 | { |
a8028dd0 | 4031 | struct mips_elf_link_hash_table *htab; |
ee227692 | 4032 | struct mips_got_info *g1, *g2; |
13db6b44 | 4033 | struct mips_got_page_ref lookup, *entry; |
ee227692 | 4034 | void **loc, **bfd_loc; |
c224138d | 4035 | |
a8028dd0 | 4036 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4037 | BFD_ASSERT (htab != NULL); |
4038 | ||
ee227692 RS |
4039 | g1 = htab->got_info; |
4040 | BFD_ASSERT (g1 != NULL); | |
a8028dd0 | 4041 | |
13db6b44 RS |
4042 | if (h) |
4043 | { | |
4044 | lookup.symndx = -1; | |
4045 | lookup.u.h = (struct mips_elf_link_hash_entry *) h; | |
4046 | } | |
4047 | else | |
4048 | { | |
4049 | lookup.symndx = symndx; | |
4050 | lookup.u.abfd = abfd; | |
4051 | } | |
4052 | lookup.addend = addend; | |
4053 | loc = htab_find_slot (g1->got_page_refs, &lookup, INSERT); | |
c224138d RS |
4054 | if (loc == NULL) |
4055 | return FALSE; | |
4056 | ||
13db6b44 | 4057 | entry = (struct mips_got_page_ref *) *loc; |
c224138d RS |
4058 | if (!entry) |
4059 | { | |
4060 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
4061 | if (!entry) | |
4062 | return FALSE; | |
4063 | ||
13db6b44 | 4064 | *entry = lookup; |
c224138d RS |
4065 | *loc = entry; |
4066 | } | |
4067 | ||
ee227692 RS |
4068 | /* Add the same entry to the BFD's GOT. */ |
4069 | g2 = mips_elf_bfd_got (abfd, TRUE); | |
4070 | if (!g2) | |
4071 | return FALSE; | |
4072 | ||
13db6b44 | 4073 | bfd_loc = htab_find_slot (g2->got_page_refs, &lookup, INSERT); |
ee227692 RS |
4074 | if (!bfd_loc) |
4075 | return FALSE; | |
4076 | ||
4077 | if (!*bfd_loc) | |
4078 | *bfd_loc = entry; | |
4079 | ||
c224138d RS |
4080 | return TRUE; |
4081 | } | |
33bb52fb RS |
4082 | |
4083 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
4084 | ||
4085 | static void | |
4086 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
4087 | unsigned int n) | |
4088 | { | |
4089 | asection *s; | |
4090 | struct mips_elf_link_hash_table *htab; | |
4091 | ||
4092 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4093 | BFD_ASSERT (htab != NULL); |
4094 | ||
33bb52fb RS |
4095 | s = mips_elf_rel_dyn_section (info, FALSE); |
4096 | BFD_ASSERT (s != NULL); | |
4097 | ||
4098 | if (htab->is_vxworks) | |
4099 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
4100 | else | |
4101 | { | |
4102 | if (s->size == 0) | |
4103 | { | |
4104 | /* Make room for a null element. */ | |
4105 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
4106 | ++s->reloc_count; | |
4107 | } | |
4108 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
4109 | } | |
4110 | } | |
4111 | \f | |
476366af RS |
4112 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4113 | mips_elf_traverse_got_arg structure. Count the number of GOT | |
4114 | entries and TLS relocs. Set DATA->value to true if we need | |
4115 | to resolve indirect or warning symbols and then recreate the GOT. */ | |
33bb52fb RS |
4116 | |
4117 | static int | |
4118 | mips_elf_check_recreate_got (void **entryp, void *data) | |
4119 | { | |
4120 | struct mips_got_entry *entry; | |
476366af | 4121 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4122 | |
4123 | entry = (struct mips_got_entry *) *entryp; | |
476366af | 4124 | arg = (struct mips_elf_traverse_got_arg *) data; |
33bb52fb RS |
4125 | if (entry->abfd != NULL && entry->symndx == -1) |
4126 | { | |
4127 | struct mips_elf_link_hash_entry *h; | |
4128 | ||
4129 | h = entry->d.h; | |
4130 | if (h->root.root.type == bfd_link_hash_indirect | |
4131 | || h->root.root.type == bfd_link_hash_warning) | |
4132 | { | |
476366af | 4133 | arg->value = TRUE; |
33bb52fb RS |
4134 | return 0; |
4135 | } | |
4136 | } | |
476366af | 4137 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
33bb52fb RS |
4138 | return 1; |
4139 | } | |
4140 | ||
476366af RS |
4141 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4142 | mips_elf_traverse_got_arg structure. Add all entries to DATA->g, | |
4143 | converting entries for indirect and warning symbols into entries | |
4144 | for the target symbol. Set DATA->g to null on error. */ | |
33bb52fb RS |
4145 | |
4146 | static int | |
4147 | mips_elf_recreate_got (void **entryp, void *data) | |
4148 | { | |
72e7511a | 4149 | struct mips_got_entry new_entry, *entry; |
476366af | 4150 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4151 | void **slot; |
4152 | ||
33bb52fb | 4153 | entry = (struct mips_got_entry *) *entryp; |
476366af | 4154 | arg = (struct mips_elf_traverse_got_arg *) data; |
72e7511a RS |
4155 | if (entry->abfd != NULL |
4156 | && entry->symndx == -1 | |
4157 | && (entry->d.h->root.root.type == bfd_link_hash_indirect | |
4158 | || entry->d.h->root.root.type == bfd_link_hash_warning)) | |
33bb52fb RS |
4159 | { |
4160 | struct mips_elf_link_hash_entry *h; | |
4161 | ||
72e7511a RS |
4162 | new_entry = *entry; |
4163 | entry = &new_entry; | |
33bb52fb | 4164 | h = entry->d.h; |
72e7511a | 4165 | do |
634835ae RS |
4166 | { |
4167 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
4168 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4169 | } | |
72e7511a RS |
4170 | while (h->root.root.type == bfd_link_hash_indirect |
4171 | || h->root.root.type == bfd_link_hash_warning); | |
33bb52fb RS |
4172 | entry->d.h = h; |
4173 | } | |
476366af | 4174 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); |
33bb52fb RS |
4175 | if (slot == NULL) |
4176 | { | |
476366af | 4177 | arg->g = NULL; |
33bb52fb RS |
4178 | return 0; |
4179 | } | |
4180 | if (*slot == NULL) | |
72e7511a RS |
4181 | { |
4182 | if (entry == &new_entry) | |
4183 | { | |
4184 | entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4185 | if (!entry) | |
4186 | { | |
476366af | 4187 | arg->g = NULL; |
72e7511a RS |
4188 | return 0; |
4189 | } | |
4190 | *entry = new_entry; | |
4191 | } | |
4192 | *slot = entry; | |
476366af | 4193 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
72e7511a | 4194 | } |
33bb52fb RS |
4195 | return 1; |
4196 | } | |
4197 | ||
13db6b44 RS |
4198 | /* Return the maximum number of GOT page entries required for RANGE. */ |
4199 | ||
4200 | static bfd_vma | |
4201 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
4202 | { | |
4203 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
4204 | } | |
4205 | ||
4206 | /* Record that G requires a page entry that can reach SEC + ADDEND. */ | |
4207 | ||
4208 | static bfd_boolean | |
b75d42bc | 4209 | mips_elf_record_got_page_entry (struct mips_elf_traverse_got_arg *arg, |
13db6b44 RS |
4210 | asection *sec, bfd_signed_vma addend) |
4211 | { | |
b75d42bc | 4212 | struct mips_got_info *g = arg->g; |
13db6b44 RS |
4213 | struct mips_got_page_entry lookup, *entry; |
4214 | struct mips_got_page_range **range_ptr, *range; | |
4215 | bfd_vma old_pages, new_pages; | |
4216 | void **loc; | |
4217 | ||
4218 | /* Find the mips_got_page_entry hash table entry for this section. */ | |
4219 | lookup.sec = sec; | |
4220 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
4221 | if (loc == NULL) | |
4222 | return FALSE; | |
4223 | ||
4224 | /* Create a mips_got_page_entry if this is the first time we've | |
4225 | seen the section. */ | |
4226 | entry = (struct mips_got_page_entry *) *loc; | |
4227 | if (!entry) | |
4228 | { | |
b75d42bc | 4229 | entry = bfd_zalloc (arg->info->output_bfd, sizeof (*entry)); |
13db6b44 RS |
4230 | if (!entry) |
4231 | return FALSE; | |
4232 | ||
4233 | entry->sec = sec; | |
4234 | *loc = entry; | |
4235 | } | |
4236 | ||
4237 | /* Skip over ranges whose maximum extent cannot share a page entry | |
4238 | with ADDEND. */ | |
4239 | range_ptr = &entry->ranges; | |
4240 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
4241 | range_ptr = &(*range_ptr)->next; | |
4242 | ||
4243 | /* If we scanned to the end of the list, or found a range whose | |
4244 | minimum extent cannot share a page entry with ADDEND, create | |
4245 | a new singleton range. */ | |
4246 | range = *range_ptr; | |
4247 | if (!range || addend < range->min_addend - 0xffff) | |
4248 | { | |
b75d42bc | 4249 | range = bfd_zalloc (arg->info->output_bfd, sizeof (*range)); |
13db6b44 RS |
4250 | if (!range) |
4251 | return FALSE; | |
4252 | ||
4253 | range->next = *range_ptr; | |
4254 | range->min_addend = addend; | |
4255 | range->max_addend = addend; | |
4256 | ||
4257 | *range_ptr = range; | |
4258 | entry->num_pages++; | |
4259 | g->page_gotno++; | |
4260 | return TRUE; | |
4261 | } | |
4262 | ||
4263 | /* Remember how many pages the old range contributed. */ | |
4264 | old_pages = mips_elf_pages_for_range (range); | |
4265 | ||
4266 | /* Update the ranges. */ | |
4267 | if (addend < range->min_addend) | |
4268 | range->min_addend = addend; | |
4269 | else if (addend > range->max_addend) | |
4270 | { | |
4271 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
4272 | { | |
4273 | old_pages += mips_elf_pages_for_range (range->next); | |
4274 | range->max_addend = range->next->max_addend; | |
4275 | range->next = range->next->next; | |
4276 | } | |
4277 | else | |
4278 | range->max_addend = addend; | |
4279 | } | |
4280 | ||
4281 | /* Record any change in the total estimate. */ | |
4282 | new_pages = mips_elf_pages_for_range (range); | |
4283 | if (old_pages != new_pages) | |
4284 | { | |
4285 | entry->num_pages += new_pages - old_pages; | |
4286 | g->page_gotno += new_pages - old_pages; | |
4287 | } | |
4288 | ||
4289 | return TRUE; | |
4290 | } | |
4291 | ||
4292 | /* A htab_traverse callback for which *REFP points to a mips_got_page_ref | |
4293 | and for which DATA points to a mips_elf_traverse_got_arg. Work out | |
4294 | whether the page reference described by *REFP needs a GOT page entry, | |
4295 | and record that entry in DATA->g if so. Set DATA->g to null on failure. */ | |
4296 | ||
4297 | static bfd_boolean | |
4298 | mips_elf_resolve_got_page_ref (void **refp, void *data) | |
4299 | { | |
4300 | struct mips_got_page_ref *ref; | |
4301 | struct mips_elf_traverse_got_arg *arg; | |
4302 | struct mips_elf_link_hash_table *htab; | |
4303 | asection *sec; | |
4304 | bfd_vma addend; | |
4305 | ||
4306 | ref = (struct mips_got_page_ref *) *refp; | |
4307 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4308 | htab = mips_elf_hash_table (arg->info); | |
4309 | ||
4310 | if (ref->symndx < 0) | |
4311 | { | |
4312 | struct mips_elf_link_hash_entry *h; | |
4313 | ||
4314 | /* Global GOT_PAGEs decay to GOT_DISP and so don't need page entries. */ | |
4315 | h = ref->u.h; | |
4316 | if (!SYMBOL_REFERENCES_LOCAL (arg->info, &h->root)) | |
4317 | return 1; | |
4318 | ||
4319 | /* Ignore undefined symbols; we'll issue an error later if | |
4320 | appropriate. */ | |
4321 | if (!((h->root.root.type == bfd_link_hash_defined | |
4322 | || h->root.root.type == bfd_link_hash_defweak) | |
4323 | && h->root.root.u.def.section)) | |
4324 | return 1; | |
4325 | ||
4326 | sec = h->root.root.u.def.section; | |
4327 | addend = h->root.root.u.def.value + ref->addend; | |
4328 | } | |
4329 | else | |
4330 | { | |
4331 | Elf_Internal_Sym *isym; | |
4332 | ||
4333 | /* Read in the symbol. */ | |
4334 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ref->u.abfd, | |
4335 | ref->symndx); | |
4336 | if (isym == NULL) | |
4337 | { | |
4338 | arg->g = NULL; | |
4339 | return 0; | |
4340 | } | |
4341 | ||
4342 | /* Get the associated input section. */ | |
4343 | sec = bfd_section_from_elf_index (ref->u.abfd, isym->st_shndx); | |
4344 | if (sec == NULL) | |
4345 | { | |
4346 | arg->g = NULL; | |
4347 | return 0; | |
4348 | } | |
4349 | ||
4350 | /* If this is a mergable section, work out the section and offset | |
4351 | of the merged data. For section symbols, the addend specifies | |
4352 | of the offset _of_ the first byte in the data, otherwise it | |
4353 | specifies the offset _from_ the first byte. */ | |
4354 | if (sec->flags & SEC_MERGE) | |
4355 | { | |
4356 | void *secinfo; | |
4357 | ||
4358 | secinfo = elf_section_data (sec)->sec_info; | |
4359 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
4360 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4361 | isym->st_value + ref->addend); | |
4362 | else | |
4363 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4364 | isym->st_value) + ref->addend; | |
4365 | } | |
4366 | else | |
4367 | addend = isym->st_value + ref->addend; | |
4368 | } | |
b75d42bc | 4369 | if (!mips_elf_record_got_page_entry (arg, sec, addend)) |
13db6b44 RS |
4370 | { |
4371 | arg->g = NULL; | |
4372 | return 0; | |
4373 | } | |
4374 | return 1; | |
4375 | } | |
4376 | ||
33bb52fb | 4377 | /* If any entries in G->got_entries are for indirect or warning symbols, |
13db6b44 RS |
4378 | replace them with entries for the target symbol. Convert g->got_page_refs |
4379 | into got_page_entry structures and estimate the number of page entries | |
4380 | that they require. */ | |
33bb52fb RS |
4381 | |
4382 | static bfd_boolean | |
476366af RS |
4383 | mips_elf_resolve_final_got_entries (struct bfd_link_info *info, |
4384 | struct mips_got_info *g) | |
33bb52fb | 4385 | { |
476366af RS |
4386 | struct mips_elf_traverse_got_arg tga; |
4387 | struct mips_got_info oldg; | |
4388 | ||
4389 | oldg = *g; | |
33bb52fb | 4390 | |
476366af RS |
4391 | tga.info = info; |
4392 | tga.g = g; | |
4393 | tga.value = FALSE; | |
4394 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &tga); | |
4395 | if (tga.value) | |
33bb52fb | 4396 | { |
476366af RS |
4397 | *g = oldg; |
4398 | g->got_entries = htab_create (htab_size (oldg.got_entries), | |
4399 | mips_elf_got_entry_hash, | |
4400 | mips_elf_got_entry_eq, NULL); | |
4401 | if (!g->got_entries) | |
33bb52fb RS |
4402 | return FALSE; |
4403 | ||
476366af RS |
4404 | htab_traverse (oldg.got_entries, mips_elf_recreate_got, &tga); |
4405 | if (!tga.g) | |
4406 | return FALSE; | |
4407 | ||
4408 | htab_delete (oldg.got_entries); | |
33bb52fb | 4409 | } |
13db6b44 RS |
4410 | |
4411 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4412 | mips_got_page_entry_eq, NULL); | |
4413 | if (g->got_page_entries == NULL) | |
4414 | return FALSE; | |
4415 | ||
4416 | tga.info = info; | |
4417 | tga.g = g; | |
4418 | htab_traverse (g->got_page_refs, mips_elf_resolve_got_page_ref, &tga); | |
4419 | ||
33bb52fb RS |
4420 | return TRUE; |
4421 | } | |
4422 | ||
c5d6fa44 RS |
4423 | /* Return true if a GOT entry for H should live in the local rather than |
4424 | global GOT area. */ | |
4425 | ||
4426 | static bfd_boolean | |
4427 | mips_use_local_got_p (struct bfd_link_info *info, | |
4428 | struct mips_elf_link_hash_entry *h) | |
4429 | { | |
4430 | /* Symbols that aren't in the dynamic symbol table must live in the | |
4431 | local GOT. This includes symbols that are completely undefined | |
4432 | and which therefore don't bind locally. We'll report undefined | |
4433 | symbols later if appropriate. */ | |
4434 | if (h->root.dynindx == -1) | |
4435 | return TRUE; | |
4436 | ||
4437 | /* Symbols that bind locally can (and in the case of forced-local | |
4438 | symbols, must) live in the local GOT. */ | |
4439 | if (h->got_only_for_calls | |
4440 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4441 | : SYMBOL_REFERENCES_LOCAL (info, &h->root)) | |
4442 | return TRUE; | |
4443 | ||
4444 | /* If this is an executable that must provide a definition of the symbol, | |
4445 | either though PLTs or copy relocations, then that address should go in | |
4446 | the local rather than global GOT. */ | |
0e1862bb | 4447 | if (bfd_link_executable (info) && h->has_static_relocs) |
c5d6fa44 RS |
4448 | return TRUE; |
4449 | ||
4450 | return FALSE; | |
4451 | } | |
4452 | ||
6c42ddb9 RS |
4453 | /* A mips_elf_link_hash_traverse callback for which DATA points to the |
4454 | link_info structure. Decide whether the hash entry needs an entry in | |
4455 | the global part of the primary GOT, setting global_got_area accordingly. | |
4456 | Count the number of global symbols that are in the primary GOT only | |
4457 | because they have relocations against them (reloc_only_gotno). */ | |
33bb52fb RS |
4458 | |
4459 | static int | |
d4596a51 | 4460 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4461 | { |
020d7251 | 4462 | struct bfd_link_info *info; |
6ccf4795 | 4463 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4464 | struct mips_got_info *g; |
4465 | ||
020d7251 | 4466 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4467 | htab = mips_elf_hash_table (info); |
4468 | g = htab->got_info; | |
d4596a51 | 4469 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4470 | { |
020d7251 | 4471 | /* Make a final decision about whether the symbol belongs in the |
c5d6fa44 RS |
4472 | local or global GOT. */ |
4473 | if (mips_use_local_got_p (info, h)) | |
6c42ddb9 RS |
4474 | /* The symbol belongs in the local GOT. We no longer need this |
4475 | entry if it was only used for relocations; those relocations | |
4476 | will be against the null or section symbol instead of H. */ | |
4477 | h->global_got_area = GGA_NONE; | |
6ccf4795 RS |
4478 | else if (htab->is_vxworks |
4479 | && h->got_only_for_calls | |
1bbce132 | 4480 | && h->root.plt.plist->mips_offset != MINUS_ONE) |
6ccf4795 RS |
4481 | /* On VxWorks, calls can refer directly to the .got.plt entry; |
4482 | they don't need entries in the regular GOT. .got.plt entries | |
4483 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4484 | h->global_got_area = GGA_NONE; | |
6c42ddb9 | 4485 | else if (h->global_got_area == GGA_RELOC_ONLY) |
23cc69b6 | 4486 | { |
6c42ddb9 | 4487 | g->reloc_only_gotno++; |
23cc69b6 | 4488 | g->global_gotno++; |
23cc69b6 | 4489 | } |
33bb52fb RS |
4490 | } |
4491 | return 1; | |
4492 | } | |
f4416af6 | 4493 | \f |
d7206569 RS |
4494 | /* A htab_traverse callback for GOT entries. Add each one to the GOT |
4495 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
f4416af6 AO |
4496 | |
4497 | static int | |
d7206569 | 4498 | mips_elf_add_got_entry (void **entryp, void *data) |
f4416af6 | 4499 | { |
d7206569 RS |
4500 | struct mips_got_entry *entry; |
4501 | struct mips_elf_traverse_got_arg *arg; | |
4502 | void **slot; | |
f4416af6 | 4503 | |
d7206569 RS |
4504 | entry = (struct mips_got_entry *) *entryp; |
4505 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4506 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); | |
4507 | if (!slot) | |
f4416af6 | 4508 | { |
d7206569 RS |
4509 | arg->g = NULL; |
4510 | return 0; | |
f4416af6 | 4511 | } |
d7206569 | 4512 | if (!*slot) |
c224138d | 4513 | { |
d7206569 RS |
4514 | *slot = entry; |
4515 | mips_elf_count_got_entry (arg->info, arg->g, entry); | |
c224138d | 4516 | } |
f4416af6 AO |
4517 | return 1; |
4518 | } | |
4519 | ||
d7206569 RS |
4520 | /* A htab_traverse callback for GOT page entries. Add each one to the GOT |
4521 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
c224138d RS |
4522 | |
4523 | static int | |
d7206569 | 4524 | mips_elf_add_got_page_entry (void **entryp, void *data) |
c224138d | 4525 | { |
d7206569 RS |
4526 | struct mips_got_page_entry *entry; |
4527 | struct mips_elf_traverse_got_arg *arg; | |
4528 | void **slot; | |
c224138d | 4529 | |
d7206569 RS |
4530 | entry = (struct mips_got_page_entry *) *entryp; |
4531 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4532 | slot = htab_find_slot (arg->g->got_page_entries, entry, INSERT); | |
4533 | if (!slot) | |
c224138d | 4534 | { |
d7206569 | 4535 | arg->g = NULL; |
c224138d RS |
4536 | return 0; |
4537 | } | |
d7206569 RS |
4538 | if (!*slot) |
4539 | { | |
4540 | *slot = entry; | |
4541 | arg->g->page_gotno += entry->num_pages; | |
4542 | } | |
c224138d RS |
4543 | return 1; |
4544 | } | |
4545 | ||
d7206569 RS |
4546 | /* Consider merging FROM, which is ABFD's GOT, into TO. Return -1 if |
4547 | this would lead to overflow, 1 if they were merged successfully, | |
4548 | and 0 if a merge failed due to lack of memory. (These values are chosen | |
4549 | so that nonnegative return values can be returned by a htab_traverse | |
4550 | callback.) */ | |
c224138d RS |
4551 | |
4552 | static int | |
d7206569 | 4553 | mips_elf_merge_got_with (bfd *abfd, struct mips_got_info *from, |
c224138d RS |
4554 | struct mips_got_info *to, |
4555 | struct mips_elf_got_per_bfd_arg *arg) | |
4556 | { | |
d7206569 | 4557 | struct mips_elf_traverse_got_arg tga; |
c224138d RS |
4558 | unsigned int estimate; |
4559 | ||
4560 | /* Work out how many page entries we would need for the combined GOT. */ | |
4561 | estimate = arg->max_pages; | |
4562 | if (estimate >= from->page_gotno + to->page_gotno) | |
4563 | estimate = from->page_gotno + to->page_gotno; | |
4564 | ||
e2ece73c | 4565 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4566 | would be needed. */ |
e2ece73c RS |
4567 | estimate += from->local_gotno + to->local_gotno; |
4568 | estimate += from->tls_gotno + to->tls_gotno; | |
4569 | ||
17214937 RS |
4570 | /* If we're merging with the primary got, any TLS relocations will |
4571 | come after the full set of global entries. Otherwise estimate those | |
e2ece73c | 4572 | conservatively as well. */ |
17214937 | 4573 | if (to == arg->primary && from->tls_gotno + to->tls_gotno) |
e2ece73c RS |
4574 | estimate += arg->global_count; |
4575 | else | |
4576 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4577 | |
4578 | /* Bail out if the combined GOT might be too big. */ | |
4579 | if (estimate > arg->max_count) | |
4580 | return -1; | |
4581 | ||
c224138d | 4582 | /* Transfer the bfd's got information from FROM to TO. */ |
d7206569 RS |
4583 | tga.info = arg->info; |
4584 | tga.g = to; | |
4585 | htab_traverse (from->got_entries, mips_elf_add_got_entry, &tga); | |
4586 | if (!tga.g) | |
c224138d RS |
4587 | return 0; |
4588 | ||
d7206569 RS |
4589 | htab_traverse (from->got_page_entries, mips_elf_add_got_page_entry, &tga); |
4590 | if (!tga.g) | |
c224138d RS |
4591 | return 0; |
4592 | ||
d7206569 | 4593 | mips_elf_replace_bfd_got (abfd, to); |
c224138d RS |
4594 | return 1; |
4595 | } | |
4596 | ||
d7206569 | 4597 | /* Attempt to merge GOT G, which belongs to ABFD. Try to use as much |
f4416af6 AO |
4598 | as possible of the primary got, since it doesn't require explicit |
4599 | dynamic relocations, but don't use bfds that would reference global | |
4600 | symbols out of the addressable range. Failing the primary got, | |
4601 | attempt to merge with the current got, or finish the current got | |
4602 | and then make make the new got current. */ | |
4603 | ||
d7206569 RS |
4604 | static bfd_boolean |
4605 | mips_elf_merge_got (bfd *abfd, struct mips_got_info *g, | |
4606 | struct mips_elf_got_per_bfd_arg *arg) | |
f4416af6 | 4607 | { |
c224138d RS |
4608 | unsigned int estimate; |
4609 | int result; | |
4610 | ||
476366af | 4611 | if (!mips_elf_resolve_final_got_entries (arg->info, g)) |
d7206569 RS |
4612 | return FALSE; |
4613 | ||
c224138d RS |
4614 | /* Work out the number of page, local and TLS entries. */ |
4615 | estimate = arg->max_pages; | |
4616 | if (estimate > g->page_gotno) | |
4617 | estimate = g->page_gotno; | |
4618 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4619 | |
4620 | /* We place TLS GOT entries after both locals and globals. The globals | |
4621 | for the primary GOT may overflow the normal GOT size limit, so be | |
4622 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4623 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4624 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4625 | |
c224138d | 4626 | if (estimate <= arg->max_count) |
f4416af6 | 4627 | { |
c224138d RS |
4628 | /* If we don't have a primary GOT, use it as |
4629 | a starting point for the primary GOT. */ | |
4630 | if (!arg->primary) | |
4631 | { | |
d7206569 RS |
4632 | arg->primary = g; |
4633 | return TRUE; | |
c224138d | 4634 | } |
f4416af6 | 4635 | |
c224138d | 4636 | /* Try merging with the primary GOT. */ |
d7206569 | 4637 | result = mips_elf_merge_got_with (abfd, g, arg->primary, arg); |
c224138d RS |
4638 | if (result >= 0) |
4639 | return result; | |
f4416af6 | 4640 | } |
c224138d | 4641 | |
f4416af6 | 4642 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4643 | if (arg->current) |
f4416af6 | 4644 | { |
d7206569 | 4645 | result = mips_elf_merge_got_with (abfd, g, arg->current, arg); |
c224138d RS |
4646 | if (result >= 0) |
4647 | return result; | |
f4416af6 | 4648 | } |
c224138d | 4649 | |
f4416af6 AO |
4650 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4651 | fits; if it turns out that it doesn't, we'll get relocation | |
4652 | overflows anyway. */ | |
c224138d RS |
4653 | g->next = arg->current; |
4654 | arg->current = g; | |
0f20cc35 | 4655 | |
d7206569 | 4656 | return TRUE; |
0f20cc35 DJ |
4657 | } |
4658 | ||
72e7511a RS |
4659 | /* ENTRYP is a hash table entry for a mips_got_entry. Set its gotidx |
4660 | to GOTIDX, duplicating the entry if it has already been assigned | |
4661 | an index in a different GOT. */ | |
4662 | ||
4663 | static bfd_boolean | |
4664 | mips_elf_set_gotidx (void **entryp, long gotidx) | |
4665 | { | |
4666 | struct mips_got_entry *entry; | |
4667 | ||
4668 | entry = (struct mips_got_entry *) *entryp; | |
4669 | if (entry->gotidx > 0) | |
4670 | { | |
4671 | struct mips_got_entry *new_entry; | |
4672 | ||
4673 | new_entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4674 | if (!new_entry) | |
4675 | return FALSE; | |
4676 | ||
4677 | *new_entry = *entry; | |
4678 | *entryp = new_entry; | |
4679 | entry = new_entry; | |
4680 | } | |
4681 | entry->gotidx = gotidx; | |
4682 | return TRUE; | |
4683 | } | |
4684 | ||
4685 | /* Set the TLS GOT index for the GOT entry in ENTRYP. DATA points to a | |
4686 | mips_elf_traverse_got_arg in which DATA->value is the size of one | |
4687 | GOT entry. Set DATA->g to null on failure. */ | |
0f20cc35 DJ |
4688 | |
4689 | static int | |
72e7511a | 4690 | mips_elf_initialize_tls_index (void **entryp, void *data) |
0f20cc35 | 4691 | { |
72e7511a RS |
4692 | struct mips_got_entry *entry; |
4693 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 DJ |
4694 | |
4695 | /* We're only interested in TLS symbols. */ | |
72e7511a | 4696 | entry = (struct mips_got_entry *) *entryp; |
9ab066b4 | 4697 | if (entry->tls_type == GOT_TLS_NONE) |
0f20cc35 DJ |
4698 | return 1; |
4699 | ||
72e7511a | 4700 | arg = (struct mips_elf_traverse_got_arg *) data; |
6c42ddb9 | 4701 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->tls_assigned_gotno)) |
ead49a57 | 4702 | { |
6c42ddb9 RS |
4703 | arg->g = NULL; |
4704 | return 0; | |
f4416af6 AO |
4705 | } |
4706 | ||
ead49a57 | 4707 | /* Account for the entries we've just allocated. */ |
9ab066b4 | 4708 | arg->g->tls_assigned_gotno += mips_tls_got_entries (entry->tls_type); |
f4416af6 AO |
4709 | return 1; |
4710 | } | |
4711 | ||
ab361d49 RS |
4712 | /* A htab_traverse callback for GOT entries, where DATA points to a |
4713 | mips_elf_traverse_got_arg. Set the global_got_area of each global | |
4714 | symbol to DATA->value. */ | |
f4416af6 | 4715 | |
f4416af6 | 4716 | static int |
ab361d49 | 4717 | mips_elf_set_global_got_area (void **entryp, void *data) |
f4416af6 | 4718 | { |
ab361d49 RS |
4719 | struct mips_got_entry *entry; |
4720 | struct mips_elf_traverse_got_arg *arg; | |
f4416af6 | 4721 | |
ab361d49 RS |
4722 | entry = (struct mips_got_entry *) *entryp; |
4723 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4724 | if (entry->abfd != NULL | |
4725 | && entry->symndx == -1 | |
4726 | && entry->d.h->global_got_area != GGA_NONE) | |
4727 | entry->d.h->global_got_area = arg->value; | |
4728 | return 1; | |
4729 | } | |
4730 | ||
4731 | /* A htab_traverse callback for secondary GOT entries, where DATA points | |
4732 | to a mips_elf_traverse_got_arg. Assign GOT indices to global entries | |
4733 | and record the number of relocations they require. DATA->value is | |
72e7511a | 4734 | the size of one GOT entry. Set DATA->g to null on failure. */ |
ab361d49 RS |
4735 | |
4736 | static int | |
4737 | mips_elf_set_global_gotidx (void **entryp, void *data) | |
4738 | { | |
4739 | struct mips_got_entry *entry; | |
4740 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 | 4741 | |
ab361d49 RS |
4742 | entry = (struct mips_got_entry *) *entryp; |
4743 | arg = (struct mips_elf_traverse_got_arg *) data; | |
634835ae RS |
4744 | if (entry->abfd != NULL |
4745 | && entry->symndx == -1 | |
4746 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 | 4747 | { |
cb22ccf4 | 4748 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_low_gotno)) |
72e7511a RS |
4749 | { |
4750 | arg->g = NULL; | |
4751 | return 0; | |
4752 | } | |
cb22ccf4 | 4753 | arg->g->assigned_low_gotno += 1; |
72e7511a | 4754 | |
0e1862bb | 4755 | if (bfd_link_pic (arg->info) |
ab361d49 RS |
4756 | || (elf_hash_table (arg->info)->dynamic_sections_created |
4757 | && entry->d.h->root.def_dynamic | |
4758 | && !entry->d.h->root.def_regular)) | |
4759 | arg->g->relocs += 1; | |
f4416af6 AO |
4760 | } |
4761 | ||
4762 | return 1; | |
4763 | } | |
4764 | ||
33bb52fb RS |
4765 | /* A htab_traverse callback for GOT entries for which DATA is the |
4766 | bfd_link_info. Forbid any global symbols from having traditional | |
4767 | lazy-binding stubs. */ | |
4768 | ||
0626d451 | 4769 | static int |
33bb52fb | 4770 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4771 | { |
33bb52fb RS |
4772 | struct bfd_link_info *info; |
4773 | struct mips_elf_link_hash_table *htab; | |
4774 | struct mips_got_entry *entry; | |
0626d451 | 4775 | |
33bb52fb RS |
4776 | entry = (struct mips_got_entry *) *entryp; |
4777 | info = (struct bfd_link_info *) data; | |
4778 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4779 | BFD_ASSERT (htab != NULL); |
4780 | ||
0626d451 RS |
4781 | if (entry->abfd != NULL |
4782 | && entry->symndx == -1 | |
33bb52fb | 4783 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4784 | { |
33bb52fb RS |
4785 | entry->d.h->needs_lazy_stub = FALSE; |
4786 | htab->lazy_stub_count--; | |
f4416af6 | 4787 | } |
143d77c5 | 4788 | |
f4416af6 AO |
4789 | return 1; |
4790 | } | |
4791 | ||
f4416af6 AO |
4792 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4793 | the primary GOT. */ | |
4794 | static bfd_vma | |
9719ad41 | 4795 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 | 4796 | { |
d7206569 | 4797 | if (!g->next) |
f4416af6 AO |
4798 | return 0; |
4799 | ||
d7206569 | 4800 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
4801 | if (! g) |
4802 | return 0; | |
4803 | ||
4804 | BFD_ASSERT (g->next); | |
4805 | ||
4806 | g = g->next; | |
143d77c5 | 4807 | |
0f20cc35 DJ |
4808 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4809 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4810 | } |
4811 | ||
4812 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4813 | a sequence of GOTs, each one 16-bit addressable. */ | |
4814 | ||
4815 | static bfd_boolean | |
9719ad41 | 4816 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4817 | asection *got, bfd_size_type pages) |
f4416af6 | 4818 | { |
a8028dd0 | 4819 | struct mips_elf_link_hash_table *htab; |
f4416af6 | 4820 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
ab361d49 | 4821 | struct mips_elf_traverse_got_arg tga; |
a8028dd0 | 4822 | struct mips_got_info *g, *gg; |
33bb52fb | 4823 | unsigned int assign, needed_relocs; |
d7206569 | 4824 | bfd *dynobj, *ibfd; |
f4416af6 | 4825 | |
33bb52fb | 4826 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4827 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4828 | BFD_ASSERT (htab != NULL); |
4829 | ||
a8028dd0 | 4830 | g = htab->got_info; |
f4416af6 | 4831 | |
f4416af6 AO |
4832 | got_per_bfd_arg.obfd = abfd; |
4833 | got_per_bfd_arg.info = info; | |
f4416af6 AO |
4834 | got_per_bfd_arg.current = NULL; |
4835 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4836 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4837 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4838 | - htab->reserved_gotno); |
c224138d | 4839 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 | 4840 | /* The number of globals that will be included in the primary GOT. |
ab361d49 | 4841 | See the calls to mips_elf_set_global_got_area below for more |
0f20cc35 DJ |
4842 | information. */ |
4843 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4844 | |
4845 | /* Try to merge the GOTs of input bfds together, as long as they | |
4846 | don't seem to exceed the maximum GOT size, choosing one of them | |
4847 | to be the primary GOT. */ | |
c72f2fb2 | 4848 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
d7206569 RS |
4849 | { |
4850 | gg = mips_elf_bfd_got (ibfd, FALSE); | |
4851 | if (gg && !mips_elf_merge_got (ibfd, gg, &got_per_bfd_arg)) | |
4852 | return FALSE; | |
4853 | } | |
f4416af6 | 4854 | |
0f20cc35 | 4855 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 | 4856 | if (got_per_bfd_arg.primary == NULL) |
3dff0dd1 | 4857 | g->next = mips_elf_create_got_info (abfd); |
f4416af6 AO |
4858 | else |
4859 | g->next = got_per_bfd_arg.primary; | |
4860 | g->next->next = got_per_bfd_arg.current; | |
4861 | ||
4862 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4863 | gg = g; | |
4864 | g = g->next; | |
4865 | ||
4866 | /* Map the output bfd to the primary got. That's what we're going | |
4867 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4868 | didn't mark in check_relocs, and we want a quick way to find it. | |
4869 | We can't just use gg->next because we're going to reverse the | |
4870 | list. */ | |
d7206569 | 4871 | mips_elf_replace_bfd_got (abfd, g); |
f4416af6 | 4872 | |
634835ae RS |
4873 | /* Every symbol that is referenced in a dynamic relocation must be |
4874 | present in the primary GOT, so arrange for them to appear after | |
4875 | those that are actually referenced. */ | |
23cc69b6 | 4876 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4877 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4878 | |
ab361d49 RS |
4879 | tga.info = info; |
4880 | tga.value = GGA_RELOC_ONLY; | |
4881 | htab_traverse (gg->got_entries, mips_elf_set_global_got_area, &tga); | |
4882 | tga.value = GGA_NORMAL; | |
4883 | htab_traverse (g->got_entries, mips_elf_set_global_got_area, &tga); | |
f4416af6 AO |
4884 | |
4885 | /* Now go through the GOTs assigning them offset ranges. | |
cb22ccf4 | 4886 | [assigned_low_gotno, local_gotno[ will be set to the range of local |
f4416af6 AO |
4887 | entries in each GOT. We can then compute the end of a GOT by |
4888 | adding local_gotno to global_gotno. We reverse the list and make | |
4889 | it circular since then we'll be able to quickly compute the | |
4890 | beginning of a GOT, by computing the end of its predecessor. To | |
4891 | avoid special cases for the primary GOT, while still preserving | |
4892 | assertions that are valid for both single- and multi-got links, | |
4893 | we arrange for the main got struct to have the right number of | |
4894 | global entries, but set its local_gotno such that the initial | |
4895 | offset of the primary GOT is zero. Remember that the primary GOT | |
4896 | will become the last item in the circular linked list, so it | |
4897 | points back to the master GOT. */ | |
4898 | gg->local_gotno = -g->global_gotno; | |
4899 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4900 | gg->tls_gotno = 0; |
f4416af6 AO |
4901 | assign = 0; |
4902 | gg->next = gg; | |
4903 | ||
4904 | do | |
4905 | { | |
4906 | struct mips_got_info *gn; | |
4907 | ||
861fb55a | 4908 | assign += htab->reserved_gotno; |
cb22ccf4 | 4909 | g->assigned_low_gotno = assign; |
c224138d RS |
4910 | g->local_gotno += assign; |
4911 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
cb22ccf4 | 4912 | g->assigned_high_gotno = g->local_gotno - 1; |
0f20cc35 DJ |
4913 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4914 | ||
ead49a57 RS |
4915 | /* Take g out of the direct list, and push it onto the reversed |
4916 | list that gg points to. g->next is guaranteed to be nonnull after | |
4917 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4918 | gn = g->next; | |
4919 | g->next = gg->next; | |
4920 | gg->next = g; | |
4921 | ||
0f20cc35 DJ |
4922 | /* Set up any TLS entries. We always place the TLS entries after |
4923 | all non-TLS entries. */ | |
4924 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
72e7511a RS |
4925 | tga.g = g; |
4926 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4927 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
4928 | if (!tga.g) | |
4929 | return FALSE; | |
1fd20d70 | 4930 | BFD_ASSERT (g->tls_assigned_gotno == assign); |
f4416af6 | 4931 | |
ead49a57 | 4932 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4933 | g = gn; |
0626d451 | 4934 | |
33bb52fb RS |
4935 | /* Forbid global symbols in every non-primary GOT from having |
4936 | lazy-binding stubs. */ | |
0626d451 | 4937 | if (g) |
33bb52fb | 4938 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4939 | } |
4940 | while (g); | |
4941 | ||
59b08994 | 4942 | got->size = assign * MIPS_ELF_GOT_SIZE (abfd); |
33bb52fb RS |
4943 | |
4944 | needed_relocs = 0; | |
33bb52fb RS |
4945 | for (g = gg->next; g && g->next != gg; g = g->next) |
4946 | { | |
4947 | unsigned int save_assign; | |
4948 | ||
ab361d49 RS |
4949 | /* Assign offsets to global GOT entries and count how many |
4950 | relocations they need. */ | |
cb22ccf4 KCY |
4951 | save_assign = g->assigned_low_gotno; |
4952 | g->assigned_low_gotno = g->local_gotno; | |
ab361d49 RS |
4953 | tga.info = info; |
4954 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4955 | tga.g = g; | |
4956 | htab_traverse (g->got_entries, mips_elf_set_global_gotidx, &tga); | |
72e7511a RS |
4957 | if (!tga.g) |
4958 | return FALSE; | |
cb22ccf4 KCY |
4959 | BFD_ASSERT (g->assigned_low_gotno == g->local_gotno + g->global_gotno); |
4960 | g->assigned_low_gotno = save_assign; | |
72e7511a | 4961 | |
0e1862bb | 4962 | if (bfd_link_pic (info)) |
33bb52fb | 4963 | { |
cb22ccf4 KCY |
4964 | g->relocs += g->local_gotno - g->assigned_low_gotno; |
4965 | BFD_ASSERT (g->assigned_low_gotno == g->next->local_gotno | |
33bb52fb RS |
4966 | + g->next->global_gotno |
4967 | + g->next->tls_gotno | |
861fb55a | 4968 | + htab->reserved_gotno); |
33bb52fb | 4969 | } |
ab361d49 | 4970 | needed_relocs += g->relocs; |
33bb52fb | 4971 | } |
ab361d49 | 4972 | needed_relocs += g->relocs; |
33bb52fb RS |
4973 | |
4974 | if (needed_relocs) | |
4975 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4976 | needed_relocs); | |
143d77c5 | 4977 | |
f4416af6 AO |
4978 | return TRUE; |
4979 | } | |
143d77c5 | 4980 | |
b49e97c9 TS |
4981 | \f |
4982 | /* Returns the first relocation of type r_type found, beginning with | |
4983 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4984 | ||
4985 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4986 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4987 | const Elf_Internal_Rela *relocation, | |
4988 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4989 | { |
c000e262 TS |
4990 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4991 | ||
b49e97c9 TS |
4992 | while (relocation < relend) |
4993 | { | |
c000e262 TS |
4994 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4995 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4996 | return relocation; |
4997 | ||
4998 | ++relocation; | |
4999 | } | |
5000 | ||
5001 | /* We didn't find it. */ | |
b49e97c9 TS |
5002 | return NULL; |
5003 | } | |
5004 | ||
020d7251 | 5005 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 5006 | |
b34976b6 | 5007 | static bfd_boolean |
9719ad41 RS |
5008 | mips_elf_local_relocation_p (bfd *input_bfd, |
5009 | const Elf_Internal_Rela *relocation, | |
020d7251 | 5010 | asection **local_sections) |
b49e97c9 TS |
5011 | { |
5012 | unsigned long r_symndx; | |
5013 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
5014 | size_t extsymoff; |
5015 | ||
5016 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5017 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5018 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
5019 | ||
5020 | if (r_symndx < extsymoff) | |
b34976b6 | 5021 | return TRUE; |
b49e97c9 | 5022 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 5023 | return TRUE; |
b49e97c9 | 5024 | |
b34976b6 | 5025 | return FALSE; |
b49e97c9 TS |
5026 | } |
5027 | \f | |
5028 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
5029 | ||
a7ebbfdf | 5030 | bfd_vma |
9719ad41 | 5031 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
5032 | { |
5033 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
5034 | /* VALUE is negative. */ | |
5035 | value |= ((bfd_vma) - 1) << bits; | |
5036 | ||
5037 | return value; | |
5038 | } | |
5039 | ||
5040 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 5041 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
5042 | BITS. */ |
5043 | ||
b34976b6 | 5044 | static bfd_boolean |
9719ad41 | 5045 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
5046 | { |
5047 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
5048 | ||
5049 | if (svalue > (1 << (bits - 1)) - 1) | |
5050 | /* The value is too big. */ | |
b34976b6 | 5051 | return TRUE; |
b49e97c9 TS |
5052 | else if (svalue < -(1 << (bits - 1))) |
5053 | /* The value is too small. */ | |
b34976b6 | 5054 | return TRUE; |
b49e97c9 TS |
5055 | |
5056 | /* All is well. */ | |
b34976b6 | 5057 | return FALSE; |
b49e97c9 TS |
5058 | } |
5059 | ||
5060 | /* Calculate the %high function. */ | |
5061 | ||
5062 | static bfd_vma | |
9719ad41 | 5063 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
5064 | { |
5065 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
5066 | } | |
5067 | ||
5068 | /* Calculate the %higher function. */ | |
5069 | ||
5070 | static bfd_vma | |
9719ad41 | 5071 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5072 | { |
5073 | #ifdef BFD64 | |
5074 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
5075 | #else | |
5076 | abort (); | |
c5ae1840 | 5077 | return MINUS_ONE; |
b49e97c9 TS |
5078 | #endif |
5079 | } | |
5080 | ||
5081 | /* Calculate the %highest function. */ | |
5082 | ||
5083 | static bfd_vma | |
9719ad41 | 5084 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5085 | { |
5086 | #ifdef BFD64 | |
b15e6682 | 5087 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
5088 | #else |
5089 | abort (); | |
c5ae1840 | 5090 | return MINUS_ONE; |
b49e97c9 TS |
5091 | #endif |
5092 | } | |
5093 | \f | |
5094 | /* Create the .compact_rel section. */ | |
5095 | ||
b34976b6 | 5096 | static bfd_boolean |
9719ad41 RS |
5097 | mips_elf_create_compact_rel_section |
5098 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
5099 | { |
5100 | flagword flags; | |
5101 | register asection *s; | |
5102 | ||
3d4d4302 | 5103 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
5104 | { |
5105 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
5106 | | SEC_READONLY); | |
5107 | ||
3d4d4302 | 5108 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 5109 | if (s == NULL |
b49e97c9 TS |
5110 | || ! bfd_set_section_alignment (abfd, s, |
5111 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 5112 | return FALSE; |
b49e97c9 | 5113 | |
eea6121a | 5114 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
5115 | } |
5116 | ||
b34976b6 | 5117 | return TRUE; |
b49e97c9 TS |
5118 | } |
5119 | ||
5120 | /* Create the .got section to hold the global offset table. */ | |
5121 | ||
b34976b6 | 5122 | static bfd_boolean |
23cc69b6 | 5123 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
5124 | { |
5125 | flagword flags; | |
5126 | register asection *s; | |
5127 | struct elf_link_hash_entry *h; | |
14a793b2 | 5128 | struct bfd_link_hash_entry *bh; |
0a44bf69 RS |
5129 | struct mips_elf_link_hash_table *htab; |
5130 | ||
5131 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5132 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5133 | |
5134 | /* This function may be called more than once. */ | |
ce558b89 | 5135 | if (htab->root.sgot) |
23cc69b6 | 5136 | return TRUE; |
b49e97c9 TS |
5137 | |
5138 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5139 | | SEC_LINKER_CREATED); | |
5140 | ||
72b4917c TS |
5141 | /* We have to use an alignment of 2**4 here because this is hardcoded |
5142 | in the function stub generation and in the linker script. */ | |
87e0a731 | 5143 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 5144 | if (s == NULL |
72b4917c | 5145 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 5146 | return FALSE; |
ce558b89 | 5147 | htab->root.sgot = s; |
b49e97c9 TS |
5148 | |
5149 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5150 | linker script because we don't want to define the symbol if we | |
5151 | are not creating a global offset table. */ | |
14a793b2 | 5152 | bh = NULL; |
b49e97c9 TS |
5153 | if (! (_bfd_generic_link_add_one_symbol |
5154 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 5155 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 5156 | return FALSE; |
14a793b2 AM |
5157 | |
5158 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
5159 | h->non_elf = 0; |
5160 | h->def_regular = 1; | |
b49e97c9 | 5161 | h->type = STT_OBJECT; |
2f9efdfc | 5162 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; |
d329bcd1 | 5163 | elf_hash_table (info)->hgot = h; |
b49e97c9 | 5164 | |
0e1862bb | 5165 | if (bfd_link_pic (info) |
c152c796 | 5166 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 5167 | return FALSE; |
b49e97c9 | 5168 | |
3dff0dd1 | 5169 | htab->got_info = mips_elf_create_got_info (abfd); |
f0abc2a1 | 5170 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
5171 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
5172 | ||
861fb55a | 5173 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
5174 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
5175 | SEC_ALLOC | SEC_LOAD | |
5176 | | SEC_HAS_CONTENTS | |
5177 | | SEC_IN_MEMORY | |
5178 | | SEC_LINKER_CREATED); | |
861fb55a DJ |
5179 | if (s == NULL) |
5180 | return FALSE; | |
ce558b89 | 5181 | htab->root.sgotplt = s; |
0a44bf69 | 5182 | |
b34976b6 | 5183 | return TRUE; |
b49e97c9 | 5184 | } |
b49e97c9 | 5185 | \f |
0a44bf69 RS |
5186 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
5187 | __GOTT_INDEX__ symbols. These symbols are only special for | |
5188 | shared objects; they are not used in executables. */ | |
5189 | ||
5190 | static bfd_boolean | |
5191 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
5192 | { | |
5193 | return (mips_elf_hash_table (info)->is_vxworks | |
0e1862bb | 5194 | && bfd_link_pic (info) |
0a44bf69 RS |
5195 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 |
5196 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
5197 | } | |
861fb55a DJ |
5198 | |
5199 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
5200 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
5201 | which determines whether the destination function ever requires a | |
5202 | stub. */ | |
5203 | ||
5204 | static bfd_boolean | |
8f0c309a CLT |
5205 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
5206 | bfd_boolean target_is_16_bit_code_p) | |
861fb55a DJ |
5207 | { |
5208 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
5209 | where the onus is on the compiler or programmer to perform any | |
5210 | necessary initialization of $25. Sometimes such initialization | |
5211 | is unnecessary; for example, -mno-shared functions do not use | |
5212 | the incoming value of $25, and may therefore be called directly. */ | |
5213 | if (PIC_OBJECT_P (input_bfd)) | |
5214 | return FALSE; | |
5215 | ||
5216 | switch (r_type) | |
5217 | { | |
5218 | case R_MIPS_26: | |
5219 | case R_MIPS_PC16: | |
7361da2c AB |
5220 | case R_MIPS_PC21_S2: |
5221 | case R_MIPS_PC26_S2: | |
df58fc94 RS |
5222 | case R_MICROMIPS_26_S1: |
5223 | case R_MICROMIPS_PC7_S1: | |
5224 | case R_MICROMIPS_PC10_S1: | |
5225 | case R_MICROMIPS_PC16_S1: | |
5226 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
5227 | return TRUE; |
5228 | ||
8f0c309a CLT |
5229 | case R_MIPS16_26: |
5230 | return !target_is_16_bit_code_p; | |
5231 | ||
861fb55a DJ |
5232 | default: |
5233 | return FALSE; | |
5234 | } | |
5235 | } | |
0a44bf69 | 5236 | \f |
b49e97c9 TS |
5237 | /* Calculate the value produced by the RELOCATION (which comes from |
5238 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5239 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5240 | ||
5241 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 5242 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 5243 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
5244 | |
5245 | This function returns bfd_reloc_continue if the caller need take no | |
5246 | further action regarding this relocation, bfd_reloc_notsupported if | |
5247 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5248 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5249 | ||
5250 | static bfd_reloc_status_type | |
9719ad41 RS |
5251 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
5252 | asection *input_section, | |
5253 | struct bfd_link_info *info, | |
5254 | const Elf_Internal_Rela *relocation, | |
5255 | bfd_vma addend, reloc_howto_type *howto, | |
5256 | Elf_Internal_Sym *local_syms, | |
5257 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
5258 | const char **namep, |
5259 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 5260 | bfd_boolean save_addend) |
b49e97c9 TS |
5261 | { |
5262 | /* The eventual value we will return. */ | |
5263 | bfd_vma value; | |
5264 | /* The address of the symbol against which the relocation is | |
5265 | occurring. */ | |
5266 | bfd_vma symbol = 0; | |
5267 | /* The final GP value to be used for the relocatable, executable, or | |
5268 | shared object file being produced. */ | |
0a61c8c2 | 5269 | bfd_vma gp; |
b49e97c9 TS |
5270 | /* The place (section offset or address) of the storage unit being |
5271 | relocated. */ | |
5272 | bfd_vma p; | |
5273 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 5274 | bfd_vma gp0; |
b49e97c9 TS |
5275 | /* The offset into the global offset table at which the address of |
5276 | the relocation entry symbol, adjusted by the addend, resides | |
5277 | during execution. */ | |
5278 | bfd_vma g = MINUS_ONE; | |
5279 | /* The section in which the symbol referenced by the relocation is | |
5280 | located. */ | |
5281 | asection *sec = NULL; | |
5282 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5283 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5284 | symbol. */ |
b34976b6 | 5285 | bfd_boolean local_p, was_local_p; |
77434823 MR |
5286 | /* TRUE if the symbol referred to by this relocation is a section |
5287 | symbol. */ | |
5288 | bfd_boolean section_p = FALSE; | |
b34976b6 AM |
5289 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ |
5290 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
5291 | /* TRUE if the symbol referred to by this relocation is |
5292 | "__gnu_local_gp". */ | |
5293 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
5294 | Elf_Internal_Shdr *symtab_hdr; |
5295 | size_t extsymoff; | |
5296 | unsigned long r_symndx; | |
5297 | int r_type; | |
b34976b6 | 5298 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5299 | relocation value. */ |
b34976b6 AM |
5300 | bfd_boolean overflowed_p; |
5301 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
5302 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
df58fc94 | 5303 | bfd_boolean target_is_micromips_code_p = FALSE; |
0a44bf69 RS |
5304 | struct mips_elf_link_hash_table *htab; |
5305 | bfd *dynobj; | |
ad951203 | 5306 | bfd_boolean resolved_to_zero; |
0a44bf69 RS |
5307 | |
5308 | dynobj = elf_hash_table (info)->dynobj; | |
5309 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5310 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5311 | |
5312 | /* Parse the relocation. */ | |
5313 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5314 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5315 | p = (input_section->output_section->vma | |
5316 | + input_section->output_offset | |
5317 | + relocation->r_offset); | |
5318 | ||
5319 | /* Assume that there will be no overflow. */ | |
b34976b6 | 5320 | overflowed_p = FALSE; |
b49e97c9 TS |
5321 | |
5322 | /* Figure out whether or not the symbol is local, and get the offset | |
5323 | used in the array of hash table entries. */ | |
5324 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5325 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5326 | local_sections); |
bce03d3d | 5327 | was_local_p = local_p; |
b49e97c9 TS |
5328 | if (! elf_bad_symtab (input_bfd)) |
5329 | extsymoff = symtab_hdr->sh_info; | |
5330 | else | |
5331 | { | |
5332 | /* The symbol table does not follow the rule that local symbols | |
5333 | must come before globals. */ | |
5334 | extsymoff = 0; | |
5335 | } | |
5336 | ||
5337 | /* Figure out the value of the symbol. */ | |
5338 | if (local_p) | |
5339 | { | |
9d862524 | 5340 | bfd_boolean micromips_p = MICROMIPS_P (abfd); |
b49e97c9 TS |
5341 | Elf_Internal_Sym *sym; |
5342 | ||
5343 | sym = local_syms + r_symndx; | |
5344 | sec = local_sections[r_symndx]; | |
5345 | ||
77434823 MR |
5346 | section_p = ELF_ST_TYPE (sym->st_info) == STT_SECTION; |
5347 | ||
b49e97c9 | 5348 | symbol = sec->output_section->vma + sec->output_offset; |
77434823 | 5349 | if (!section_p || (sec->flags & SEC_MERGE)) |
b49e97c9 | 5350 | symbol += sym->st_value; |
77434823 | 5351 | if ((sec->flags & SEC_MERGE) && section_p) |
d4df96e6 L |
5352 | { |
5353 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5354 | addend -= symbol; | |
5355 | addend += sec->output_section->vma + sec->output_offset; | |
5356 | } | |
b49e97c9 | 5357 | |
df58fc94 RS |
5358 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5359 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5360 | ++symbol; |
5361 | ||
5362 | /* Record the name of this symbol, for our caller. */ | |
5363 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5364 | symtab_hdr->sh_link, | |
5365 | sym->st_name); | |
ceab86af | 5366 | if (*namep == NULL || **namep == '\0') |
b49e97c9 TS |
5367 | *namep = bfd_section_name (input_bfd, sec); |
5368 | ||
9d862524 | 5369 | /* For relocations against a section symbol and ones against no |
07d6d2b8 | 5370 | symbol (absolute relocations) infer the ISA mode from the addend. */ |
9d862524 MR |
5371 | if (section_p || r_symndx == STN_UNDEF) |
5372 | { | |
5373 | target_is_16_bit_code_p = (addend & 1) && !micromips_p; | |
5374 | target_is_micromips_code_p = (addend & 1) && micromips_p; | |
5375 | } | |
5376 | /* For relocations against an absolute symbol infer the ISA mode | |
07d6d2b8 | 5377 | from the value of the symbol plus addend. */ |
9d862524 MR |
5378 | else if (bfd_is_abs_section (sec)) |
5379 | { | |
5380 | target_is_16_bit_code_p = ((symbol + addend) & 1) && !micromips_p; | |
5381 | target_is_micromips_code_p = ((symbol + addend) & 1) && micromips_p; | |
5382 | } | |
5383 | /* Otherwise just use the regular symbol annotation available. */ | |
5384 | else | |
5385 | { | |
5386 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); | |
5387 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); | |
5388 | } | |
b49e97c9 TS |
5389 | } |
5390 | else | |
5391 | { | |
560e09e9 NC |
5392 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5393 | ||
b49e97c9 TS |
5394 | /* For global symbols we look up the symbol in the hash-table. */ |
5395 | h = ((struct mips_elf_link_hash_entry *) | |
5396 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5397 | /* Find the real hash-table entry for this symbol. */ | |
5398 | while (h->root.root.type == bfd_link_hash_indirect | |
5399 | || h->root.root.type == bfd_link_hash_warning) | |
5400 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5401 | ||
5402 | /* Record the name of this symbol, for our caller. */ | |
5403 | *namep = h->root.root.root.string; | |
5404 | ||
5405 | /* See if this is the special _gp_disp symbol. Note that such a | |
5406 | symbol must always be a global symbol. */ | |
560e09e9 | 5407 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5408 | && ! NEWABI_P (input_bfd)) |
5409 | { | |
5410 | /* Relocations against _gp_disp are permitted only with | |
5411 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5412 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5413 | return bfd_reloc_notsupported; |
5414 | ||
b34976b6 | 5415 | gp_disp_p = TRUE; |
b49e97c9 | 5416 | } |
bbe506e8 TS |
5417 | /* See if this is the special _gp symbol. Note that such a |
5418 | symbol must always be a global symbol. */ | |
5419 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
5420 | gnu_local_gp_p = TRUE; | |
5421 | ||
5422 | ||
b49e97c9 TS |
5423 | /* If this symbol is defined, calculate its address. Note that |
5424 | _gp_disp is a magic symbol, always implicitly defined by the | |
5425 | linker, so it's inappropriate to check to see whether or not | |
5426 | its defined. */ | |
5427 | else if ((h->root.root.type == bfd_link_hash_defined | |
5428 | || h->root.root.type == bfd_link_hash_defweak) | |
5429 | && h->root.root.u.def.section) | |
5430 | { | |
5431 | sec = h->root.root.u.def.section; | |
5432 | if (sec->output_section) | |
5433 | symbol = (h->root.root.u.def.value | |
5434 | + sec->output_section->vma | |
5435 | + sec->output_offset); | |
5436 | else | |
5437 | symbol = h->root.root.u.def.value; | |
5438 | } | |
5439 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5440 | /* We allow relocations against undefined weak symbols, giving | |
5441 | it the value zero, so that you can undefined weak functions | |
5442 | and check to see if they exist by looking at their | |
5443 | addresses. */ | |
5444 | symbol = 0; | |
59c2e50f | 5445 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5446 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5447 | symbol = 0; | |
a4d0f181 TS |
5448 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5449 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5450 | { |
5451 | /* If this is a dynamic link, we should have created a | |
5452 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
de194d85 | 5453 | in _bfd_mips_elf_create_dynamic_sections. |
b49e97c9 TS |
5454 | Otherwise, we should define the symbol with a value of 0. |
5455 | FIXME: It should probably get into the symbol table | |
5456 | somehow as well. */ | |
0e1862bb | 5457 | BFD_ASSERT (! bfd_link_pic (info)); |
b49e97c9 TS |
5458 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); |
5459 | symbol = 0; | |
5460 | } | |
5e2b0d47 NC |
5461 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5462 | { | |
5463 | /* This is an optional symbol - an Irix specific extension to the | |
5464 | ELF spec. Ignore it for now. | |
5465 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5466 | than simply ignoring them, but we do not handle this for now. | |
5467 | For information see the "64-bit ELF Object File Specification" | |
5468 | which is available from here: | |
5469 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5470 | symbol = 0; | |
5471 | } | |
b49e97c9 TS |
5472 | else |
5473 | { | |
dfb93f11 JC |
5474 | bfd_boolean reject_undefined |
5475 | = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR | |
5476 | || ELF_ST_VISIBILITY (h->root.other) != STV_DEFAULT); | |
5477 | ||
1a72702b AM |
5478 | (*info->callbacks->undefined_symbol) |
5479 | (info, h->root.root.root.string, input_bfd, | |
dfb93f11 JC |
5480 | input_section, relocation->r_offset, reject_undefined); |
5481 | ||
5482 | if (reject_undefined) | |
5483 | return bfd_reloc_undefined; | |
5484 | ||
5485 | symbol = 0; | |
b49e97c9 TS |
5486 | } |
5487 | ||
30c09090 | 5488 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
1bbce132 | 5489 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (h->root.other); |
b49e97c9 TS |
5490 | } |
5491 | ||
738e5348 RS |
5492 | /* If this is a reference to a 16-bit function with a stub, we need |
5493 | to redirect the relocation to the stub unless: | |
5494 | ||
5495 | (a) the relocation is for a MIPS16 JAL; | |
5496 | ||
5497 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5498 | non-MIPS16 uses of the GOT slot; or | |
5499 | ||
5500 | (c) the section allows direct references to MIPS16 functions. */ | |
5501 | if (r_type != R_MIPS16_26 | |
0e1862bb | 5502 | && !bfd_link_relocatable (info) |
738e5348 RS |
5503 | && ((h != NULL |
5504 | && h->fn_stub != NULL | |
5505 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 | 5506 | || (local_p |
698600e4 AM |
5507 | && mips_elf_tdata (input_bfd)->local_stubs != NULL |
5508 | && mips_elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
738e5348 | 5509 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5510 | { |
5511 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5512 | have already noticed that we were going to need the | |
5513 | stub. */ | |
5514 | if (local_p) | |
8f0c309a | 5515 | { |
698600e4 | 5516 | sec = mips_elf_tdata (input_bfd)->local_stubs[r_symndx]; |
8f0c309a CLT |
5517 | value = 0; |
5518 | } | |
b49e97c9 TS |
5519 | else |
5520 | { | |
5521 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5522 | if (h->la25_stub) |
5523 | { | |
5524 | /* If a LA25 header for the stub itself exists, point to the | |
5525 | prepended LUI/ADDIU sequence. */ | |
5526 | sec = h->la25_stub->stub_section; | |
5527 | value = h->la25_stub->offset; | |
5528 | } | |
5529 | else | |
5530 | { | |
5531 | sec = h->fn_stub; | |
5532 | value = 0; | |
5533 | } | |
b49e97c9 TS |
5534 | } |
5535 | ||
8f0c309a | 5536 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 TS |
5537 | /* The target is 16-bit, but the stub isn't. */ |
5538 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 | 5539 | } |
1bbce132 MR |
5540 | /* If this is a MIPS16 call with a stub, that is made through the PLT or |
5541 | to a standard MIPS function, we need to redirect the call to the stub. | |
5542 | Note that we specifically exclude R_MIPS16_CALL16 from this behavior; | |
5543 | indirect calls should use an indirect stub instead. */ | |
0e1862bb | 5544 | else if (r_type == R_MIPS16_26 && !bfd_link_relocatable (info) |
b314ec0e | 5545 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 | 5546 | || (local_p |
698600e4 AM |
5547 | && mips_elf_tdata (input_bfd)->local_call_stubs != NULL |
5548 | && mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
1bbce132 | 5549 | && ((h != NULL && h->use_plt_entry) || !target_is_16_bit_code_p)) |
b49e97c9 | 5550 | { |
b9d58d71 | 5551 | if (local_p) |
698600e4 | 5552 | sec = mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx]; |
b9d58d71 | 5553 | else |
b49e97c9 | 5554 | { |
b9d58d71 TS |
5555 | /* If both call_stub and call_fp_stub are defined, we can figure |
5556 | out which one to use by checking which one appears in the input | |
5557 | file. */ | |
5558 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5559 | { |
b9d58d71 | 5560 | asection *o; |
68ffbac6 | 5561 | |
b9d58d71 TS |
5562 | sec = NULL; |
5563 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5564 | { |
b9d58d71 TS |
5565 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5566 | { | |
5567 | sec = h->call_fp_stub; | |
5568 | break; | |
5569 | } | |
b49e97c9 | 5570 | } |
b9d58d71 TS |
5571 | if (sec == NULL) |
5572 | sec = h->call_stub; | |
b49e97c9 | 5573 | } |
b9d58d71 | 5574 | else if (h->call_stub != NULL) |
b49e97c9 | 5575 | sec = h->call_stub; |
b9d58d71 TS |
5576 | else |
5577 | sec = h->call_fp_stub; | |
07d6d2b8 | 5578 | } |
b49e97c9 | 5579 | |
eea6121a | 5580 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5581 | symbol = sec->output_section->vma + sec->output_offset; |
5582 | } | |
861fb55a DJ |
5583 | /* If this is a direct call to a PIC function, redirect to the |
5584 | non-PIC stub. */ | |
5585 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5586 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5587 | target_is_16_bit_code_p)) | |
c7318def MR |
5588 | { |
5589 | symbol = (h->la25_stub->stub_section->output_section->vma | |
5590 | + h->la25_stub->stub_section->output_offset | |
5591 | + h->la25_stub->offset); | |
5592 | if (ELF_ST_IS_MICROMIPS (h->root.other)) | |
5593 | symbol |= 1; | |
5594 | } | |
1bbce132 MR |
5595 | /* For direct MIPS16 and microMIPS calls make sure the compressed PLT |
5596 | entry is used if a standard PLT entry has also been made. In this | |
5597 | case the symbol will have been set by mips_elf_set_plt_sym_value | |
5598 | to point to the standard PLT entry, so redirect to the compressed | |
5599 | one. */ | |
54806ffa MR |
5600 | else if ((mips16_branch_reloc_p (r_type) |
5601 | || micromips_branch_reloc_p (r_type)) | |
0e1862bb | 5602 | && !bfd_link_relocatable (info) |
1bbce132 MR |
5603 | && h != NULL |
5604 | && h->use_plt_entry | |
5605 | && h->root.plt.plist->comp_offset != MINUS_ONE | |
5606 | && h->root.plt.plist->mips_offset != MINUS_ONE) | |
5607 | { | |
5608 | bfd_boolean micromips_p = MICROMIPS_P (abfd); | |
5609 | ||
ce558b89 | 5610 | sec = htab->root.splt; |
1bbce132 MR |
5611 | symbol = (sec->output_section->vma |
5612 | + sec->output_offset | |
5613 | + htab->plt_header_size | |
5614 | + htab->plt_mips_offset | |
5615 | + h->root.plt.plist->comp_offset | |
5616 | + 1); | |
5617 | ||
5618 | target_is_16_bit_code_p = !micromips_p; | |
5619 | target_is_micromips_code_p = micromips_p; | |
5620 | } | |
b49e97c9 | 5621 | |
df58fc94 | 5622 | /* Make sure MIPS16 and microMIPS are not used together. */ |
c9775dde | 5623 | if ((mips16_branch_reloc_p (r_type) && target_is_micromips_code_p) |
df58fc94 RS |
5624 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) |
5625 | { | |
4eca0228 | 5626 | _bfd_error_handler |
df58fc94 RS |
5627 | (_("MIPS16 and microMIPS functions cannot call each other")); |
5628 | return bfd_reloc_notsupported; | |
5629 | } | |
5630 | ||
b49e97c9 | 5631 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5632 | mode change. However, we can ignore calls to undefined weak symbols, |
5633 | which should never be executed at runtime. This exception is important | |
5634 | because the assembly writer may have "known" that any definition of the | |
5635 | symbol would be 16-bit code, and that direct jumps were therefore | |
5636 | acceptable. */ | |
0e1862bb | 5637 | *cross_mode_jump_p = (!bfd_link_relocatable (info) |
df58fc94 | 5638 | && !(h && h->root.root.type == bfd_link_hash_undefweak) |
9d862524 MR |
5639 | && ((mips16_branch_reloc_p (r_type) |
5640 | && !target_is_16_bit_code_p) | |
5641 | || (micromips_branch_reloc_p (r_type) | |
df58fc94 | 5642 | && !target_is_micromips_code_p) |
9d862524 MR |
5643 | || ((branch_reloc_p (r_type) |
5644 | || r_type == R_MIPS_JALR) | |
df58fc94 RS |
5645 | && (target_is_16_bit_code_p |
5646 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5647 | |
c5d6fa44 | 5648 | local_p = (h == NULL || mips_use_local_got_p (info, h)); |
b49e97c9 | 5649 | |
0a61c8c2 RS |
5650 | gp0 = _bfd_get_gp_value (input_bfd); |
5651 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5652 | if (htab->got_info) |
a8028dd0 | 5653 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5654 | |
5655 | if (gnu_local_gp_p) | |
5656 | symbol = gp; | |
5657 | ||
df58fc94 RS |
5658 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5659 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5660 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5661 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5662 | { |
df58fc94 RS |
5663 | r_type = (micromips_reloc_p (r_type) |
5664 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5665 | addend = 0; |
5666 | } | |
5667 | ||
ad951203 L |
5668 | resolved_to_zero = (h != NULL |
5669 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, | |
5670 | &h->root)); | |
5671 | ||
e77760d2 | 5672 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5673 | to need it, get it now. */ |
b49e97c9 TS |
5674 | switch (r_type) |
5675 | { | |
738e5348 RS |
5676 | case R_MIPS16_CALL16: |
5677 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5678 | case R_MIPS_CALL16: |
5679 | case R_MIPS_GOT16: | |
5680 | case R_MIPS_GOT_DISP: | |
5681 | case R_MIPS_GOT_HI16: | |
5682 | case R_MIPS_CALL_HI16: | |
5683 | case R_MIPS_GOT_LO16: | |
5684 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5685 | case R_MICROMIPS_CALL16: |
5686 | case R_MICROMIPS_GOT16: | |
5687 | case R_MICROMIPS_GOT_DISP: | |
5688 | case R_MICROMIPS_GOT_HI16: | |
5689 | case R_MICROMIPS_CALL_HI16: | |
5690 | case R_MICROMIPS_GOT_LO16: | |
5691 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5692 | case R_MIPS_TLS_GD: |
5693 | case R_MIPS_TLS_GOTTPREL: | |
5694 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5695 | case R_MIPS16_TLS_GD: |
5696 | case R_MIPS16_TLS_GOTTPREL: | |
5697 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5698 | case R_MICROMIPS_TLS_GD: |
5699 | case R_MICROMIPS_TLS_GOTTPREL: | |
5700 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5701 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5702 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5703 | { |
0a44bf69 | 5704 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5705 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5706 | if (g == MINUS_ONE) |
5707 | return bfd_reloc_outofrange; | |
5708 | } | |
5709 | else if (!local_p) | |
b49e97c9 | 5710 | { |
0a44bf69 RS |
5711 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5712 | entry, which is initialized to point at the PLT stub. */ | |
5713 | if (htab->is_vxworks | |
df58fc94 RS |
5714 | && (call_hi16_reloc_p (r_type) |
5715 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5716 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5717 | { |
5718 | BFD_ASSERT (addend == 0); | |
5719 | BFD_ASSERT (h->root.needs_plt); | |
5720 | g = mips_elf_gotplt_index (info, &h->root); | |
5721 | } | |
5722 | else | |
b49e97c9 | 5723 | { |
020d7251 | 5724 | BFD_ASSERT (addend == 0); |
13fbec83 RS |
5725 | g = mips_elf_global_got_index (abfd, info, input_bfd, |
5726 | &h->root, r_type); | |
e641e783 | 5727 | if (!TLS_RELOC_P (r_type) |
020d7251 RS |
5728 | && !elf_hash_table (info)->dynamic_sections_created) |
5729 | /* This is a static link. We must initialize the GOT entry. */ | |
ce558b89 | 5730 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->root.sgot->contents + g); |
b49e97c9 TS |
5731 | } |
5732 | } | |
0a44bf69 | 5733 | else if (!htab->is_vxworks |
738e5348 | 5734 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5735 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5736 | break; |
5737 | else | |
5738 | { | |
5c18022e | 5739 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5740 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5741 | if (g == MINUS_ONE) |
5742 | return bfd_reloc_outofrange; | |
5743 | } | |
5744 | ||
5745 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5746 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5747 | break; |
b49e97c9 TS |
5748 | } |
5749 | ||
0a44bf69 RS |
5750 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5751 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5752 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5753 | { | |
5754 | Elf_Internal_Rela outrel; | |
5755 | bfd_byte *loc; | |
5756 | asection *s; | |
5757 | ||
5758 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5759 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5760 | ||
5761 | outrel.r_offset = (input_section->output_section->vma | |
5762 | + input_section->output_offset | |
5763 | + relocation->r_offset); | |
5764 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5765 | outrel.r_addend = addend; | |
5766 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5767 | |
5768 | /* If we've written this relocation for a readonly section, | |
5769 | we need to set DF_TEXTREL again, so that we do not delete the | |
5770 | DT_TEXTREL tag. */ | |
5771 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5772 | info->flags |= DF_TEXTREL; | |
5773 | ||
0a44bf69 RS |
5774 | *valuep = 0; |
5775 | return bfd_reloc_ok; | |
5776 | } | |
5777 | ||
b49e97c9 TS |
5778 | /* Figure out what kind of relocation is being performed. */ |
5779 | switch (r_type) | |
5780 | { | |
5781 | case R_MIPS_NONE: | |
5782 | return bfd_reloc_continue; | |
5783 | ||
5784 | case R_MIPS_16: | |
c3eb94b4 MF |
5785 | if (howto->partial_inplace) |
5786 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
5787 | value = symbol + addend; | |
b49e97c9 TS |
5788 | overflowed_p = mips_elf_overflow_p (value, 16); |
5789 | break; | |
5790 | ||
5791 | case R_MIPS_32: | |
5792 | case R_MIPS_REL32: | |
5793 | case R_MIPS_64: | |
0e1862bb | 5794 | if ((bfd_link_pic (info) |
861fb55a | 5795 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5796 | && h != NULL |
f5385ebf | 5797 | && h->root.def_dynamic |
861fb55a DJ |
5798 | && !h->root.def_regular |
5799 | && !h->has_static_relocs)) | |
cf35638d | 5800 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
5801 | && (h == NULL |
5802 | || h->root.root.type != bfd_link_hash_undefweak | |
ad951203 L |
5803 | || (ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT |
5804 | && !resolved_to_zero)) | |
b49e97c9 TS |
5805 | && (input_section->flags & SEC_ALLOC) != 0) |
5806 | { | |
861fb55a | 5807 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5808 | where the symbol will end up. So, we create a relocation |
5809 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5810 | linker. We must do the same for executable references to |
5811 | shared library symbols, unless we've decided to use copy | |
5812 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5813 | value = addend; |
5814 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5815 | info, | |
5816 | relocation, | |
5817 | h, | |
5818 | sec, | |
5819 | symbol, | |
5820 | &value, | |
5821 | input_section)) | |
5822 | return bfd_reloc_undefined; | |
5823 | } | |
5824 | else | |
5825 | { | |
5826 | if (r_type != R_MIPS_REL32) | |
5827 | value = symbol + addend; | |
5828 | else | |
5829 | value = addend; | |
5830 | } | |
5831 | value &= howto->dst_mask; | |
092dcd75 CD |
5832 | break; |
5833 | ||
5834 | case R_MIPS_PC32: | |
5835 | value = symbol + addend - p; | |
5836 | value &= howto->dst_mask; | |
b49e97c9 TS |
5837 | break; |
5838 | ||
b49e97c9 TS |
5839 | case R_MIPS16_26: |
5840 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5841 | R_MIPS_26. It's only the storage of the relocated field into | |
5842 | the output file that's different. That's handled in | |
5843 | mips_elf_perform_relocation. So, we just fall through to the | |
5844 | R_MIPS_26 case here. */ | |
5845 | case R_MIPS_26: | |
df58fc94 RS |
5846 | case R_MICROMIPS_26_S1: |
5847 | { | |
5848 | unsigned int shift; | |
5849 | ||
df58fc94 RS |
5850 | /* Shift is 2, unusually, for microMIPS JALX. */ |
5851 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
5852 | ||
77434823 | 5853 | if (howto->partial_inplace && !section_p) |
df58fc94 | 5854 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); |
c3eb94b4 MF |
5855 | else |
5856 | value = addend; | |
bc27bb05 MR |
5857 | value += symbol; |
5858 | ||
9d862524 MR |
5859 | /* Make sure the target of a jump is suitably aligned. Bit 0 must |
5860 | be the correct ISA mode selector except for weak undefined | |
5861 | symbols. */ | |
5862 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
5863 | && (*cross_mode_jump_p | |
5864 | ? (value & 3) != (r_type == R_MIPS_26) | |
07d6d2b8 | 5865 | : (value & ((1 << shift) - 1)) != (r_type != R_MIPS_26))) |
bc27bb05 MR |
5866 | return bfd_reloc_outofrange; |
5867 | ||
5868 | value >>= shift; | |
77434823 | 5869 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
df58fc94 RS |
5870 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); |
5871 | value &= howto->dst_mask; | |
5872 | } | |
b49e97c9 TS |
5873 | break; |
5874 | ||
0f20cc35 | 5875 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 5876 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 5877 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
5878 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
5879 | & howto->dst_mask); | |
5880 | break; | |
5881 | ||
5882 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5883 | case R_MIPS_TLS_DTPREL32: |
5884 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 5885 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 5886 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
5887 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5888 | break; | |
5889 | ||
5890 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 5891 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 5892 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
5893 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
5894 | & howto->dst_mask); | |
5895 | break; | |
5896 | ||
5897 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
5898 | case R_MIPS_TLS_TPREL32: |
5899 | case R_MIPS_TLS_TPREL64: | |
5900 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 5901 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
5902 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
5903 | break; | |
5904 | ||
b49e97c9 | 5905 | case R_MIPS_HI16: |
d6f16593 | 5906 | case R_MIPS16_HI16: |
df58fc94 | 5907 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
5908 | if (!gp_disp_p) |
5909 | { | |
5910 | value = mips_elf_high (addend + symbol); | |
5911 | value &= howto->dst_mask; | |
5912 | } | |
5913 | else | |
5914 | { | |
d6f16593 | 5915 | /* For MIPS16 ABI code we generate this sequence |
07d6d2b8 AM |
5916 | 0: li $v0,%hi(_gp_disp) |
5917 | 4: addiupc $v1,%lo(_gp_disp) | |
5918 | 8: sll $v0,16 | |
d6f16593 MR |
5919 | 12: addu $v0,$v1 |
5920 | 14: move $gp,$v0 | |
5921 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
5922 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
5923 | ADDIUPC clears the low two bits of the instruction address, | |
5924 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 5925 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 5926 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
5927 | /* The microMIPS .cpload sequence uses the same assembly |
5928 | instructions as the traditional psABI version, but the | |
5929 | incoming $t9 has the low bit set. */ | |
5930 | else if (r_type == R_MICROMIPS_HI16) | |
5931 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
5932 | else |
5933 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5934 | } |
5935 | break; | |
5936 | ||
5937 | case R_MIPS_LO16: | |
d6f16593 | 5938 | case R_MIPS16_LO16: |
df58fc94 RS |
5939 | case R_MICROMIPS_LO16: |
5940 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
5941 | if (!gp_disp_p) |
5942 | value = (symbol + addend) & howto->dst_mask; | |
5943 | else | |
5944 | { | |
d6f16593 MR |
5945 | /* See the comment for R_MIPS16_HI16 above for the reason |
5946 | for this conditional. */ | |
5947 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 5948 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
5949 | else if (r_type == R_MICROMIPS_LO16 |
5950 | || r_type == R_MICROMIPS_HI0_LO16) | |
5951 | value = addend + gp - p + 3; | |
d6f16593 MR |
5952 | else |
5953 | value = addend + gp - p + 4; | |
b49e97c9 | 5954 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5955 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5956 | _gp_disp are normally generated from the .cpload |
5957 | pseudo-op. It generates code that normally looks like | |
5958 | this: | |
5959 | ||
5960 | lui $gp,%hi(_gp_disp) | |
5961 | addiu $gp,$gp,%lo(_gp_disp) | |
5962 | addu $gp,$gp,$t9 | |
5963 | ||
5964 | Here $t9 holds the address of the function being called, | |
5965 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5966 | relocation can easily overflow in this situation, but the | |
5967 | R_MIPS_HI16 relocation will handle the overflow. | |
5968 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5969 | not check for overflow here. */ | |
5970 | } | |
5971 | break; | |
5972 | ||
5973 | case R_MIPS_LITERAL: | |
df58fc94 | 5974 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
5975 | /* Because we don't merge literal sections, we can handle this |
5976 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5977 | shared literals, and then we will need to additional work | |
5978 | here. */ | |
5979 | ||
5980 | /* Fall through. */ | |
5981 | ||
5982 | case R_MIPS16_GPREL: | |
5983 | /* The R_MIPS16_GPREL performs the same calculation as | |
5984 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5985 | order. We don't need to do anything special here; the | |
5986 | differences are handled in mips_elf_perform_relocation. */ | |
5987 | case R_MIPS_GPREL16: | |
df58fc94 RS |
5988 | case R_MICROMIPS_GPREL7_S2: |
5989 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
5990 | /* Only sign-extend the addend if it was extracted from the |
5991 | instruction. If the addend was separate, leave it alone, | |
5992 | otherwise we may lose significant bits. */ | |
5993 | if (howto->partial_inplace) | |
a7ebbfdf | 5994 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5995 | value = symbol + addend - gp; |
5996 | /* If the symbol was local, any earlier relocatable links will | |
5997 | have adjusted its addend with the gp offset, so compensate | |
5998 | for that now. Don't do it for symbols forced local in this | |
5999 | link, though, since they won't have had the gp offset applied | |
6000 | to them before. */ | |
6001 | if (was_local_p) | |
6002 | value += gp0; | |
538baf8b AB |
6003 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6004 | overflowed_p = mips_elf_overflow_p (value, 16); | |
b49e97c9 TS |
6005 | break; |
6006 | ||
738e5348 RS |
6007 | case R_MIPS16_GOT16: |
6008 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
6009 | case R_MIPS_GOT16: |
6010 | case R_MIPS_CALL16: | |
df58fc94 RS |
6011 | case R_MICROMIPS_GOT16: |
6012 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 6013 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 6014 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 6015 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 6016 | { |
5c18022e | 6017 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 6018 | symbol + addend, !was_local_p); |
b49e97c9 TS |
6019 | if (value == MINUS_ONE) |
6020 | return bfd_reloc_outofrange; | |
6021 | value | |
a8028dd0 | 6022 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6023 | overflowed_p = mips_elf_overflow_p (value, 16); |
6024 | break; | |
6025 | } | |
6026 | ||
6027 | /* Fall through. */ | |
6028 | ||
0f20cc35 DJ |
6029 | case R_MIPS_TLS_GD: |
6030 | case R_MIPS_TLS_GOTTPREL: | |
6031 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 6032 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
6033 | case R_MIPS16_TLS_GD: |
6034 | case R_MIPS16_TLS_GOTTPREL: | |
6035 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
6036 | case R_MICROMIPS_TLS_GD: |
6037 | case R_MICROMIPS_TLS_GOTTPREL: | |
6038 | case R_MICROMIPS_TLS_LDM: | |
6039 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
6040 | value = g; |
6041 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6042 | break; | |
6043 | ||
6044 | case R_MIPS_GPREL32: | |
bce03d3d AO |
6045 | value = (addend + symbol + gp0 - gp); |
6046 | if (!save_addend) | |
6047 | value &= howto->dst_mask; | |
b49e97c9 TS |
6048 | break; |
6049 | ||
6050 | case R_MIPS_PC16: | |
bad36eac | 6051 | case R_MIPS_GNU_REL16_S2: |
c3eb94b4 MF |
6052 | if (howto->partial_inplace) |
6053 | addend = _bfd_mips_elf_sign_extend (addend, 18); | |
6054 | ||
9d862524 | 6055 | /* No need to exclude weak undefined symbols here as they resolve |
07d6d2b8 AM |
6056 | to 0 and never set `*cross_mode_jump_p', so this alignment check |
6057 | will never trigger for them. */ | |
9d862524 MR |
6058 | if (*cross_mode_jump_p |
6059 | ? ((symbol + addend) & 3) != 1 | |
6060 | : ((symbol + addend) & 3) != 0) | |
c3eb94b4 MF |
6061 | return bfd_reloc_outofrange; |
6062 | ||
6063 | value = symbol + addend - p; | |
538baf8b AB |
6064 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6065 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
6066 | value >>= howto->rightshift; |
6067 | value &= howto->dst_mask; | |
b49e97c9 TS |
6068 | break; |
6069 | ||
c9775dde MR |
6070 | case R_MIPS16_PC16_S1: |
6071 | if (howto->partial_inplace) | |
6072 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
6073 | ||
6074 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
9d862524 MR |
6075 | && (*cross_mode_jump_p |
6076 | ? ((symbol + addend) & 3) != 0 | |
6077 | : ((symbol + addend) & 1) == 0)) | |
c9775dde MR |
6078 | return bfd_reloc_outofrange; |
6079 | ||
6080 | value = symbol + addend - p; | |
6081 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6082 | overflowed_p = mips_elf_overflow_p (value, 17); | |
6083 | value >>= howto->rightshift; | |
6084 | value &= howto->dst_mask; | |
6085 | break; | |
6086 | ||
7361da2c AB |
6087 | case R_MIPS_PC21_S2: |
6088 | if (howto->partial_inplace) | |
6089 | addend = _bfd_mips_elf_sign_extend (addend, 23); | |
6090 | ||
6091 | if ((symbol + addend) & 3) | |
6092 | return bfd_reloc_outofrange; | |
6093 | ||
6094 | value = symbol + addend - p; | |
538baf8b AB |
6095 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6096 | overflowed_p = mips_elf_overflow_p (value, 23); | |
7361da2c AB |
6097 | value >>= howto->rightshift; |
6098 | value &= howto->dst_mask; | |
6099 | break; | |
6100 | ||
6101 | case R_MIPS_PC26_S2: | |
6102 | if (howto->partial_inplace) | |
6103 | addend = _bfd_mips_elf_sign_extend (addend, 28); | |
6104 | ||
6105 | if ((symbol + addend) & 3) | |
6106 | return bfd_reloc_outofrange; | |
6107 | ||
6108 | value = symbol + addend - p; | |
538baf8b AB |
6109 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6110 | overflowed_p = mips_elf_overflow_p (value, 28); | |
7361da2c AB |
6111 | value >>= howto->rightshift; |
6112 | value &= howto->dst_mask; | |
6113 | break; | |
6114 | ||
6115 | case R_MIPS_PC18_S3: | |
6116 | if (howto->partial_inplace) | |
6117 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6118 | ||
6119 | if ((symbol + addend) & 7) | |
6120 | return bfd_reloc_outofrange; | |
6121 | ||
6122 | value = symbol + addend - ((p | 7) ^ 7); | |
538baf8b AB |
6123 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6124 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6125 | value >>= howto->rightshift; |
6126 | value &= howto->dst_mask; | |
6127 | break; | |
6128 | ||
6129 | case R_MIPS_PC19_S2: | |
6130 | if (howto->partial_inplace) | |
6131 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6132 | ||
6133 | if ((symbol + addend) & 3) | |
6134 | return bfd_reloc_outofrange; | |
6135 | ||
6136 | value = symbol + addend - p; | |
538baf8b AB |
6137 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6138 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6139 | value >>= howto->rightshift; |
6140 | value &= howto->dst_mask; | |
6141 | break; | |
6142 | ||
6143 | case R_MIPS_PCHI16: | |
6144 | value = mips_elf_high (symbol + addend - p); | |
538baf8b AB |
6145 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6146 | overflowed_p = mips_elf_overflow_p (value, 16); | |
7361da2c AB |
6147 | value &= howto->dst_mask; |
6148 | break; | |
6149 | ||
6150 | case R_MIPS_PCLO16: | |
6151 | if (howto->partial_inplace) | |
6152 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
6153 | value = symbol + addend - p; | |
6154 | value &= howto->dst_mask; | |
6155 | break; | |
6156 | ||
df58fc94 | 6157 | case R_MICROMIPS_PC7_S1: |
c3eb94b4 MF |
6158 | if (howto->partial_inplace) |
6159 | addend = _bfd_mips_elf_sign_extend (addend, 8); | |
9d862524 MR |
6160 | |
6161 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6162 | && (*cross_mode_jump_p | |
6163 | ? ((symbol + addend + 2) & 3) != 0 | |
6164 | : ((symbol + addend + 2) & 1) == 0)) | |
6165 | return bfd_reloc_outofrange; | |
6166 | ||
c3eb94b4 | 6167 | value = symbol + addend - p; |
538baf8b AB |
6168 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6169 | overflowed_p = mips_elf_overflow_p (value, 8); | |
df58fc94 RS |
6170 | value >>= howto->rightshift; |
6171 | value &= howto->dst_mask; | |
6172 | break; | |
6173 | ||
6174 | case R_MICROMIPS_PC10_S1: | |
c3eb94b4 MF |
6175 | if (howto->partial_inplace) |
6176 | addend = _bfd_mips_elf_sign_extend (addend, 11); | |
9d862524 MR |
6177 | |
6178 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6179 | && (*cross_mode_jump_p | |
6180 | ? ((symbol + addend + 2) & 3) != 0 | |
6181 | : ((symbol + addend + 2) & 1) == 0)) | |
6182 | return bfd_reloc_outofrange; | |
6183 | ||
c3eb94b4 | 6184 | value = symbol + addend - p; |
538baf8b AB |
6185 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6186 | overflowed_p = mips_elf_overflow_p (value, 11); | |
df58fc94 RS |
6187 | value >>= howto->rightshift; |
6188 | value &= howto->dst_mask; | |
6189 | break; | |
6190 | ||
6191 | case R_MICROMIPS_PC16_S1: | |
c3eb94b4 MF |
6192 | if (howto->partial_inplace) |
6193 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
9d862524 MR |
6194 | |
6195 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6196 | && (*cross_mode_jump_p | |
6197 | ? ((symbol + addend) & 3) != 0 | |
6198 | : ((symbol + addend) & 1) == 0)) | |
6199 | return bfd_reloc_outofrange; | |
6200 | ||
c3eb94b4 | 6201 | value = symbol + addend - p; |
538baf8b AB |
6202 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6203 | overflowed_p = mips_elf_overflow_p (value, 17); | |
df58fc94 RS |
6204 | value >>= howto->rightshift; |
6205 | value &= howto->dst_mask; | |
6206 | break; | |
6207 | ||
6208 | case R_MICROMIPS_PC23_S2: | |
c3eb94b4 MF |
6209 | if (howto->partial_inplace) |
6210 | addend = _bfd_mips_elf_sign_extend (addend, 25); | |
6211 | value = symbol + addend - ((p | 3) ^ 3); | |
538baf8b AB |
6212 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6213 | overflowed_p = mips_elf_overflow_p (value, 25); | |
df58fc94 RS |
6214 | value >>= howto->rightshift; |
6215 | value &= howto->dst_mask; | |
6216 | break; | |
6217 | ||
b49e97c9 TS |
6218 | case R_MIPS_GOT_HI16: |
6219 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
6220 | case R_MICROMIPS_GOT_HI16: |
6221 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
6222 | /* We're allowed to handle these two relocations identically. |
6223 | The dynamic linker is allowed to handle the CALL relocations | |
6224 | differently by creating a lazy evaluation stub. */ | |
6225 | value = g; | |
6226 | value = mips_elf_high (value); | |
6227 | value &= howto->dst_mask; | |
6228 | break; | |
6229 | ||
6230 | case R_MIPS_GOT_LO16: | |
6231 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
6232 | case R_MICROMIPS_GOT_LO16: |
6233 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
6234 | value = g & howto->dst_mask; |
6235 | break; | |
6236 | ||
6237 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 6238 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 6239 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
6240 | if (value == MINUS_ONE) |
6241 | return bfd_reloc_outofrange; | |
a8028dd0 | 6242 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6243 | overflowed_p = mips_elf_overflow_p (value, 16); |
6244 | break; | |
6245 | ||
6246 | case R_MIPS_GOT_OFST: | |
df58fc94 | 6247 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 6248 | if (local_p) |
5c18022e | 6249 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
6250 | else |
6251 | value = addend; | |
b49e97c9 TS |
6252 | overflowed_p = mips_elf_overflow_p (value, 16); |
6253 | break; | |
6254 | ||
6255 | case R_MIPS_SUB: | |
df58fc94 | 6256 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
6257 | value = symbol - addend; |
6258 | value &= howto->dst_mask; | |
6259 | break; | |
6260 | ||
6261 | case R_MIPS_HIGHER: | |
df58fc94 | 6262 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
6263 | value = mips_elf_higher (addend + symbol); |
6264 | value &= howto->dst_mask; | |
6265 | break; | |
6266 | ||
6267 | case R_MIPS_HIGHEST: | |
df58fc94 | 6268 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
6269 | value = mips_elf_highest (addend + symbol); |
6270 | value &= howto->dst_mask; | |
6271 | break; | |
6272 | ||
6273 | case R_MIPS_SCN_DISP: | |
df58fc94 | 6274 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
6275 | value = symbol + addend - sec->output_offset; |
6276 | value &= howto->dst_mask; | |
6277 | break; | |
6278 | ||
b49e97c9 | 6279 | case R_MIPS_JALR: |
df58fc94 | 6280 | case R_MICROMIPS_JALR: |
1367d393 ILT |
6281 | /* This relocation is only a hint. In some cases, we optimize |
6282 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
6283 | when the symbol does not resolve locally. */ |
6284 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 | 6285 | return bfd_reloc_continue; |
c1556ecd MR |
6286 | /* We can't optimize cross-mode jumps either. */ |
6287 | if (*cross_mode_jump_p) | |
6288 | return bfd_reloc_continue; | |
1367d393 | 6289 | value = symbol + addend; |
c1556ecd MR |
6290 | /* Neither we can non-instruction-aligned targets. */ |
6291 | if (r_type == R_MIPS_JALR ? (value & 3) != 0 : (value & 1) == 0) | |
6292 | return bfd_reloc_continue; | |
1367d393 | 6293 | break; |
b49e97c9 | 6294 | |
1367d393 | 6295 | case R_MIPS_PJUMP: |
b49e97c9 TS |
6296 | case R_MIPS_GNU_VTINHERIT: |
6297 | case R_MIPS_GNU_VTENTRY: | |
6298 | /* We don't do anything with these at present. */ | |
6299 | return bfd_reloc_continue; | |
6300 | ||
6301 | default: | |
6302 | /* An unrecognized relocation type. */ | |
6303 | return bfd_reloc_notsupported; | |
6304 | } | |
6305 | ||
6306 | /* Store the VALUE for our caller. */ | |
6307 | *valuep = value; | |
6308 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
6309 | } | |
6310 | ||
6311 | /* Obtain the field relocated by RELOCATION. */ | |
6312 | ||
6313 | static bfd_vma | |
9719ad41 RS |
6314 | mips_elf_obtain_contents (reloc_howto_type *howto, |
6315 | const Elf_Internal_Rela *relocation, | |
6316 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 | 6317 | { |
6346d5ca | 6318 | bfd_vma x = 0; |
b49e97c9 | 6319 | bfd_byte *location = contents + relocation->r_offset; |
6346d5ca | 6320 | unsigned int size = bfd_get_reloc_size (howto); |
b49e97c9 TS |
6321 | |
6322 | /* Obtain the bytes. */ | |
6346d5ca AM |
6323 | if (size != 0) |
6324 | x = bfd_get (8 * size, input_bfd, location); | |
b49e97c9 | 6325 | |
b49e97c9 TS |
6326 | return x; |
6327 | } | |
6328 | ||
6329 | /* It has been determined that the result of the RELOCATION is the | |
6330 | VALUE. Use HOWTO to place VALUE into the output file at the | |
6331 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 6332 | relocation applies. |
38a7df63 | 6333 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 6334 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 6335 | |
b34976b6 | 6336 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 6337 | |
b34976b6 | 6338 | static bfd_boolean |
9719ad41 RS |
6339 | mips_elf_perform_relocation (struct bfd_link_info *info, |
6340 | reloc_howto_type *howto, | |
6341 | const Elf_Internal_Rela *relocation, | |
6342 | bfd_vma value, bfd *input_bfd, | |
6343 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 6344 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
6345 | { |
6346 | bfd_vma x; | |
6347 | bfd_byte *location; | |
6348 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
6346d5ca | 6349 | unsigned int size; |
b49e97c9 TS |
6350 | |
6351 | /* Figure out where the relocation is occurring. */ | |
6352 | location = contents + relocation->r_offset; | |
6353 | ||
df58fc94 | 6354 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
d6f16593 | 6355 | |
b49e97c9 TS |
6356 | /* Obtain the current value. */ |
6357 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
6358 | ||
6359 | /* Clear the field we are setting. */ | |
6360 | x &= ~howto->dst_mask; | |
6361 | ||
b49e97c9 TS |
6362 | /* Set the field. */ |
6363 | x |= (value & howto->dst_mask); | |
6364 | ||
a6ebf616 | 6365 | /* Detect incorrect JALX usage. If required, turn JAL or BAL into JALX. */ |
9d862524 MR |
6366 | if (!cross_mode_jump_p && jal_reloc_p (r_type)) |
6367 | { | |
6368 | bfd_vma opcode = x >> 26; | |
6369 | ||
6370 | if (r_type == R_MIPS16_26 ? opcode == 0x7 | |
6371 | : r_type == R_MICROMIPS_26_S1 ? opcode == 0x3c | |
6372 | : opcode == 0x1d) | |
6373 | { | |
6374 | info->callbacks->einfo | |
2c1c9679 | 6375 | (_("%X%H: unsupported JALX to the same ISA mode\n"), |
9d862524 MR |
6376 | input_bfd, input_section, relocation->r_offset); |
6377 | return TRUE; | |
6378 | } | |
6379 | } | |
38a7df63 | 6380 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 6381 | { |
b34976b6 | 6382 | bfd_boolean ok; |
b49e97c9 TS |
6383 | bfd_vma opcode = x >> 26; |
6384 | bfd_vma jalx_opcode; | |
6385 | ||
6386 | /* Check to see if the opcode is already JAL or JALX. */ | |
6387 | if (r_type == R_MIPS16_26) | |
6388 | { | |
6389 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
6390 | jalx_opcode = 0x7; | |
6391 | } | |
df58fc94 RS |
6392 | else if (r_type == R_MICROMIPS_26_S1) |
6393 | { | |
6394 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
6395 | jalx_opcode = 0x3c; | |
6396 | } | |
b49e97c9 TS |
6397 | else |
6398 | { | |
6399 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
6400 | jalx_opcode = 0x1d; | |
6401 | } | |
6402 | ||
3bdf9505 | 6403 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
07d6d2b8 | 6404 | convert J or JALS to JALX. */ |
b49e97c9 TS |
6405 | if (!ok) |
6406 | { | |
5f68df25 | 6407 | info->callbacks->einfo |
2c1c9679 | 6408 | (_("%X%H: unsupported jump between ISA modes; " |
5f68df25 MR |
6409 | "consider recompiling with interlinking enabled\n"), |
6410 | input_bfd, input_section, relocation->r_offset); | |
6411 | return TRUE; | |
b49e97c9 TS |
6412 | } |
6413 | ||
6414 | /* Make this the JALX opcode. */ | |
6415 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
6416 | } | |
9d862524 MR |
6417 | else if (cross_mode_jump_p && b_reloc_p (r_type)) |
6418 | { | |
a6ebf616 MR |
6419 | bfd_boolean ok = FALSE; |
6420 | bfd_vma opcode = x >> 16; | |
6421 | bfd_vma jalx_opcode = 0; | |
70e65ca8 | 6422 | bfd_vma sign_bit = 0; |
a6ebf616 MR |
6423 | bfd_vma addr; |
6424 | bfd_vma dest; | |
6425 | ||
6426 | if (r_type == R_MICROMIPS_PC16_S1) | |
6427 | { | |
6428 | ok = opcode == 0x4060; | |
6429 | jalx_opcode = 0x3c; | |
70e65ca8 | 6430 | sign_bit = 0x10000; |
a6ebf616 MR |
6431 | value <<= 1; |
6432 | } | |
6433 | else if (r_type == R_MIPS_PC16 || r_type == R_MIPS_GNU_REL16_S2) | |
6434 | { | |
6435 | ok = opcode == 0x411; | |
6436 | jalx_opcode = 0x1d; | |
70e65ca8 | 6437 | sign_bit = 0x20000; |
a6ebf616 MR |
6438 | value <<= 2; |
6439 | } | |
6440 | ||
8b10b0b3 | 6441 | if (ok && !bfd_link_pic (info)) |
a6ebf616 | 6442 | { |
8b10b0b3 MR |
6443 | addr = (input_section->output_section->vma |
6444 | + input_section->output_offset | |
6445 | + relocation->r_offset | |
6446 | + 4); | |
70e65ca8 MR |
6447 | dest = (addr |
6448 | + (((value & ((sign_bit << 1) - 1)) ^ sign_bit) - sign_bit)); | |
a6ebf616 | 6449 | |
8b10b0b3 MR |
6450 | if ((addr >> 28) << 28 != (dest >> 28) << 28) |
6451 | { | |
6452 | info->callbacks->einfo | |
2c1c9679 | 6453 | (_("%X%H: cannot convert branch between ISA modes " |
8b10b0b3 MR |
6454 | "to JALX: relocation out of range\n"), |
6455 | input_bfd, input_section, relocation->r_offset); | |
6456 | return TRUE; | |
6457 | } | |
a6ebf616 | 6458 | |
8b10b0b3 MR |
6459 | /* Make this the JALX opcode. */ |
6460 | x = ((dest >> 2) & 0x3ffffff) | jalx_opcode << 26; | |
6461 | } | |
6462 | else if (!mips_elf_hash_table (info)->ignore_branch_isa) | |
a6ebf616 MR |
6463 | { |
6464 | info->callbacks->einfo | |
2c1c9679 | 6465 | (_("%X%H: unsupported branch between ISA modes\n"), |
a6ebf616 MR |
6466 | input_bfd, input_section, relocation->r_offset); |
6467 | return TRUE; | |
6468 | } | |
9d862524 | 6469 | } |
b49e97c9 | 6470 | |
38a7df63 CF |
6471 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
6472 | range. */ | |
0e1862bb | 6473 | if (!bfd_link_relocatable (info) |
38a7df63 | 6474 | && !cross_mode_jump_p |
cd8d5a82 CF |
6475 | && ((JAL_TO_BAL_P (input_bfd) |
6476 | && r_type == R_MIPS_26 | |
0e392101 | 6477 | && (x >> 26) == 0x3) /* jal addr */ |
cd8d5a82 CF |
6478 | || (JALR_TO_BAL_P (input_bfd) |
6479 | && r_type == R_MIPS_JALR | |
0e392101 | 6480 | && x == 0x0320f809) /* jalr t9 */ |
38a7df63 CF |
6481 | || (JR_TO_B_P (input_bfd) |
6482 | && r_type == R_MIPS_JALR | |
0e392101 | 6483 | && (x & ~1) == 0x03200008))) /* jr t9 / jalr zero, t9 */ |
1367d393 ILT |
6484 | { |
6485 | bfd_vma addr; | |
6486 | bfd_vma dest; | |
6487 | bfd_signed_vma off; | |
6488 | ||
6489 | addr = (input_section->output_section->vma | |
6490 | + input_section->output_offset | |
6491 | + relocation->r_offset | |
6492 | + 4); | |
6493 | if (r_type == R_MIPS_26) | |
6494 | dest = (value << 2) | ((addr >> 28) << 28); | |
6495 | else | |
6496 | dest = value; | |
6497 | off = dest - addr; | |
6498 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 | 6499 | { |
0e392101 | 6500 | if ((x & ~1) == 0x03200008) /* jr t9 / jalr zero, t9 */ |
38a7df63 CF |
6501 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ |
6502 | else | |
6503 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
6504 | } | |
1367d393 ILT |
6505 | } |
6506 | ||
b49e97c9 | 6507 | /* Put the value into the output. */ |
6346d5ca AM |
6508 | size = bfd_get_reloc_size (howto); |
6509 | if (size != 0) | |
6510 | bfd_put (8 * size, input_bfd, x, location); | |
d6f16593 | 6511 | |
0e1862bb | 6512 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !bfd_link_relocatable (info), |
df58fc94 | 6513 | location); |
d6f16593 | 6514 | |
b34976b6 | 6515 | return TRUE; |
b49e97c9 | 6516 | } |
b49e97c9 | 6517 | \f |
b49e97c9 TS |
6518 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6519 | is the original relocation, which is now being transformed into a | |
6520 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
6521 | caller should store the result in place of the original addend. */ | |
6522 | ||
b34976b6 | 6523 | static bfd_boolean |
9719ad41 RS |
6524 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
6525 | struct bfd_link_info *info, | |
6526 | const Elf_Internal_Rela *rel, | |
6527 | struct mips_elf_link_hash_entry *h, | |
6528 | asection *sec, bfd_vma symbol, | |
6529 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 6530 | { |
947216bf | 6531 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
6532 | asection *sreloc; |
6533 | bfd *dynobj; | |
6534 | int r_type; | |
5d41f0b6 RS |
6535 | long indx; |
6536 | bfd_boolean defined_p; | |
0a44bf69 | 6537 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6538 | |
0a44bf69 | 6539 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6540 | BFD_ASSERT (htab != NULL); |
6541 | ||
b49e97c9 TS |
6542 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
6543 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 6544 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
6545 | BFD_ASSERT (sreloc != NULL); |
6546 | BFD_ASSERT (sreloc->contents != NULL); | |
6547 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 6548 | < sreloc->size); |
b49e97c9 | 6549 | |
b49e97c9 TS |
6550 | outrel[0].r_offset = |
6551 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
6552 | if (ABI_64_P (output_bfd)) |
6553 | { | |
6554 | outrel[1].r_offset = | |
6555 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6556 | outrel[2].r_offset = | |
6557 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6558 | } | |
b49e97c9 | 6559 | |
c5ae1840 | 6560 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6561 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
6562 | return TRUE; |
6563 | ||
6564 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6565 | { |
6566 | /* The relocation field has been converted into a relative value of | |
6567 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6568 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6569 | *addendp += symbol; |
5d41f0b6 | 6570 | return TRUE; |
0d591ff7 | 6571 | } |
b49e97c9 | 6572 | |
5d41f0b6 RS |
6573 | /* We must now calculate the dynamic symbol table index to use |
6574 | in the relocation. */ | |
d4a77f3f | 6575 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6576 | { |
020d7251 | 6577 | BFD_ASSERT (htab->is_vxworks || h->global_got_area != GGA_NONE); |
5d41f0b6 RS |
6578 | indx = h->root.dynindx; |
6579 | if (SGI_COMPAT (output_bfd)) | |
6580 | defined_p = h->root.def_regular; | |
6581 | else | |
6582 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6583 | relocation field. It therefore treats relocs against | |
6584 | defined symbols in the same way as relocs against | |
6585 | undefined symbols. */ | |
6586 | defined_p = FALSE; | |
6587 | } | |
b49e97c9 TS |
6588 | else |
6589 | { | |
5d41f0b6 RS |
6590 | if (sec != NULL && bfd_is_abs_section (sec)) |
6591 | indx = 0; | |
6592 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6593 | { |
5d41f0b6 RS |
6594 | bfd_set_error (bfd_error_bad_value); |
6595 | return FALSE; | |
b49e97c9 TS |
6596 | } |
6597 | else | |
6598 | { | |
5d41f0b6 | 6599 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6600 | if (indx == 0) |
6601 | { | |
6602 | asection *osec = htab->root.text_index_section; | |
6603 | indx = elf_section_data (osec)->dynindx; | |
6604 | } | |
5d41f0b6 RS |
6605 | if (indx == 0) |
6606 | abort (); | |
b49e97c9 TS |
6607 | } |
6608 | ||
5d41f0b6 RS |
6609 | /* Instead of generating a relocation using the section |
6610 | symbol, we may as well make it a fully relative | |
6611 | relocation. We want to avoid generating relocations to | |
6612 | local symbols because we used to generate them | |
6613 | incorrectly, without adding the original symbol value, | |
6614 | which is mandated by the ABI for section symbols. In | |
6615 | order to give dynamic loaders and applications time to | |
6616 | phase out the incorrect use, we refrain from emitting | |
6617 | section-relative relocations. It's not like they're | |
6618 | useful, after all. This should be a bit more efficient | |
6619 | as well. */ | |
6620 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6621 | the ABI says that relocations against STN_UNDEF should have | |
6622 | a symbol value of 0. Irix rld honors this, so relocations | |
6623 | against STN_UNDEF have no effect. */ | |
6624 | if (!SGI_COMPAT (output_bfd)) | |
6625 | indx = 0; | |
6626 | defined_p = TRUE; | |
b49e97c9 TS |
6627 | } |
6628 | ||
5d41f0b6 RS |
6629 | /* If the relocation was previously an absolute relocation and |
6630 | this symbol will not be referred to by the relocation, we must | |
6631 | adjust it by the value we give it in the dynamic symbol table. | |
6632 | Otherwise leave the job up to the dynamic linker. */ | |
6633 | if (defined_p && r_type != R_MIPS_REL32) | |
6634 | *addendp += symbol; | |
6635 | ||
0a44bf69 RS |
6636 | if (htab->is_vxworks) |
6637 | /* VxWorks uses non-relative relocations for this. */ | |
6638 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6639 | else | |
6640 | /* The relocation is always an REL32 relocation because we don't | |
6641 | know where the shared library will wind up at load-time. */ | |
6642 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6643 | R_MIPS_REL32); | |
6644 | ||
5d41f0b6 RS |
6645 | /* For strict adherence to the ABI specification, we should |
6646 | generate a R_MIPS_64 relocation record by itself before the | |
6647 | _REL32/_64 record as well, such that the addend is read in as | |
6648 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6649 | However, since none of the existing ELF64 MIPS dynamic | |
6650 | loaders seems to care, we don't waste space with these | |
6651 | artificial relocations. If this turns out to not be true, | |
6652 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6653 | as to make room for a pair of dynamic relocations per | |
6654 | invocation if ABI_64_P, and here we should generate an | |
6655 | additional relocation record with R_MIPS_64 by itself for a | |
6656 | NULL symbol before this relocation record. */ | |
6657 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6658 | ABI_64_P (output_bfd) | |
6659 | ? R_MIPS_64 | |
6660 | : R_MIPS_NONE); | |
6661 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6662 | ||
6663 | /* Adjust the output offset of the relocation to reference the | |
6664 | correct location in the output file. */ | |
6665 | outrel[0].r_offset += (input_section->output_section->vma | |
6666 | + input_section->output_offset); | |
6667 | outrel[1].r_offset += (input_section->output_section->vma | |
6668 | + input_section->output_offset); | |
6669 | outrel[2].r_offset += (input_section->output_section->vma | |
6670 | + input_section->output_offset); | |
6671 | ||
b49e97c9 TS |
6672 | /* Put the relocation back out. We have to use the special |
6673 | relocation outputter in the 64-bit case since the 64-bit | |
6674 | relocation format is non-standard. */ | |
6675 | if (ABI_64_P (output_bfd)) | |
6676 | { | |
6677 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6678 | (output_bfd, &outrel[0], | |
6679 | (sreloc->contents | |
6680 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6681 | } | |
0a44bf69 RS |
6682 | else if (htab->is_vxworks) |
6683 | { | |
6684 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6685 | outrel[0].r_addend = *addendp; | |
6686 | bfd_elf32_swap_reloca_out | |
6687 | (output_bfd, &outrel[0], | |
6688 | (sreloc->contents | |
6689 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6690 | } | |
b49e97c9 | 6691 | else |
947216bf AM |
6692 | bfd_elf32_swap_reloc_out |
6693 | (output_bfd, &outrel[0], | |
6694 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6695 | |
b49e97c9 TS |
6696 | /* We've now added another relocation. */ |
6697 | ++sreloc->reloc_count; | |
6698 | ||
6699 | /* Make sure the output section is writable. The dynamic linker | |
6700 | will be writing to it. */ | |
6701 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6702 | |= SHF_WRITE; | |
6703 | ||
6704 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6705 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6706 | { |
3d4d4302 | 6707 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6708 | bfd_byte *cr; |
6709 | ||
6710 | if (scpt) | |
6711 | { | |
6712 | Elf32_crinfo cptrel; | |
6713 | ||
6714 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6715 | cptrel.vaddr = (rel->r_offset | |
6716 | + input_section->output_section->vma | |
6717 | + input_section->output_offset); | |
6718 | if (r_type == R_MIPS_REL32) | |
6719 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6720 | else | |
6721 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6722 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6723 | cptrel.konst = *addendp; | |
6724 | ||
6725 | cr = (scpt->contents | |
6726 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6727 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6728 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6729 | ((Elf32_External_crinfo *) cr | |
6730 | + scpt->reloc_count)); | |
6731 | ++scpt->reloc_count; | |
6732 | } | |
6733 | } | |
6734 | ||
943284cc DJ |
6735 | /* If we've written this relocation for a readonly section, |
6736 | we need to set DF_TEXTREL again, so that we do not delete the | |
6737 | DT_TEXTREL tag. */ | |
6738 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6739 | info->flags |= DF_TEXTREL; | |
6740 | ||
b34976b6 | 6741 | return TRUE; |
b49e97c9 TS |
6742 | } |
6743 | \f | |
b49e97c9 TS |
6744 | /* Return the MACH for a MIPS e_flags value. */ |
6745 | ||
6746 | unsigned long | |
9719ad41 | 6747 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6748 | { |
6749 | switch (flags & EF_MIPS_MACH) | |
6750 | { | |
6751 | case E_MIPS_MACH_3900: | |
6752 | return bfd_mach_mips3900; | |
6753 | ||
6754 | case E_MIPS_MACH_4010: | |
6755 | return bfd_mach_mips4010; | |
6756 | ||
6757 | case E_MIPS_MACH_4100: | |
6758 | return bfd_mach_mips4100; | |
6759 | ||
6760 | case E_MIPS_MACH_4111: | |
6761 | return bfd_mach_mips4111; | |
6762 | ||
00707a0e RS |
6763 | case E_MIPS_MACH_4120: |
6764 | return bfd_mach_mips4120; | |
6765 | ||
b49e97c9 TS |
6766 | case E_MIPS_MACH_4650: |
6767 | return bfd_mach_mips4650; | |
6768 | ||
00707a0e RS |
6769 | case E_MIPS_MACH_5400: |
6770 | return bfd_mach_mips5400; | |
6771 | ||
6772 | case E_MIPS_MACH_5500: | |
6773 | return bfd_mach_mips5500; | |
6774 | ||
e407c74b NC |
6775 | case E_MIPS_MACH_5900: |
6776 | return bfd_mach_mips5900; | |
6777 | ||
0d2e43ed ILT |
6778 | case E_MIPS_MACH_9000: |
6779 | return bfd_mach_mips9000; | |
6780 | ||
b49e97c9 TS |
6781 | case E_MIPS_MACH_SB1: |
6782 | return bfd_mach_mips_sb1; | |
6783 | ||
350cc38d MS |
6784 | case E_MIPS_MACH_LS2E: |
6785 | return bfd_mach_mips_loongson_2e; | |
6786 | ||
6787 | case E_MIPS_MACH_LS2F: | |
6788 | return bfd_mach_mips_loongson_2f; | |
6789 | ||
fd503541 NC |
6790 | case E_MIPS_MACH_LS3A: |
6791 | return bfd_mach_mips_loongson_3a; | |
6792 | ||
2c629856 N |
6793 | case E_MIPS_MACH_OCTEON3: |
6794 | return bfd_mach_mips_octeon3; | |
6795 | ||
432233b3 AP |
6796 | case E_MIPS_MACH_OCTEON2: |
6797 | return bfd_mach_mips_octeon2; | |
6798 | ||
6f179bd0 AN |
6799 | case E_MIPS_MACH_OCTEON: |
6800 | return bfd_mach_mips_octeon; | |
6801 | ||
52b6b6b9 JM |
6802 | case E_MIPS_MACH_XLR: |
6803 | return bfd_mach_mips_xlr; | |
6804 | ||
38bf472a MR |
6805 | case E_MIPS_MACH_IAMR2: |
6806 | return bfd_mach_mips_interaptiv_mr2; | |
6807 | ||
b49e97c9 TS |
6808 | default: |
6809 | switch (flags & EF_MIPS_ARCH) | |
6810 | { | |
6811 | default: | |
6812 | case E_MIPS_ARCH_1: | |
6813 | return bfd_mach_mips3000; | |
b49e97c9 TS |
6814 | |
6815 | case E_MIPS_ARCH_2: | |
6816 | return bfd_mach_mips6000; | |
b49e97c9 TS |
6817 | |
6818 | case E_MIPS_ARCH_3: | |
6819 | return bfd_mach_mips4000; | |
b49e97c9 TS |
6820 | |
6821 | case E_MIPS_ARCH_4: | |
6822 | return bfd_mach_mips8000; | |
b49e97c9 TS |
6823 | |
6824 | case E_MIPS_ARCH_5: | |
6825 | return bfd_mach_mips5; | |
b49e97c9 TS |
6826 | |
6827 | case E_MIPS_ARCH_32: | |
6828 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
6829 | |
6830 | case E_MIPS_ARCH_64: | |
6831 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6832 | |
6833 | case E_MIPS_ARCH_32R2: | |
6834 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6835 | |
6836 | case E_MIPS_ARCH_64R2: | |
6837 | return bfd_mach_mipsisa64r2; | |
7361da2c AB |
6838 | |
6839 | case E_MIPS_ARCH_32R6: | |
6840 | return bfd_mach_mipsisa32r6; | |
6841 | ||
6842 | case E_MIPS_ARCH_64R6: | |
6843 | return bfd_mach_mipsisa64r6; | |
b49e97c9 TS |
6844 | } |
6845 | } | |
6846 | ||
6847 | return 0; | |
6848 | } | |
6849 | ||
6850 | /* Return printable name for ABI. */ | |
6851 | ||
6852 | static INLINE char * | |
9719ad41 | 6853 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6854 | { |
6855 | flagword flags; | |
6856 | ||
6857 | flags = elf_elfheader (abfd)->e_flags; | |
6858 | switch (flags & EF_MIPS_ABI) | |
6859 | { | |
6860 | case 0: | |
6861 | if (ABI_N32_P (abfd)) | |
6862 | return "N32"; | |
6863 | else if (ABI_64_P (abfd)) | |
6864 | return "64"; | |
6865 | else | |
6866 | return "none"; | |
6867 | case E_MIPS_ABI_O32: | |
6868 | return "O32"; | |
6869 | case E_MIPS_ABI_O64: | |
6870 | return "O64"; | |
6871 | case E_MIPS_ABI_EABI32: | |
6872 | return "EABI32"; | |
6873 | case E_MIPS_ABI_EABI64: | |
6874 | return "EABI64"; | |
6875 | default: | |
6876 | return "unknown abi"; | |
6877 | } | |
6878 | } | |
6879 | \f | |
6880 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6881 | other is for small objects. All the small objects are kept | |
6882 | together, and then referenced via the gp pointer, which yields | |
6883 | faster assembler code. This is what we use for the small common | |
6884 | section. This approach is copied from ecoff.c. */ | |
6885 | static asection mips_elf_scom_section; | |
6886 | static asymbol mips_elf_scom_symbol; | |
6887 | static asymbol *mips_elf_scom_symbol_ptr; | |
6888 | ||
6889 | /* MIPS ELF also uses an acommon section, which represents an | |
6890 | allocated common symbol which may be overridden by a | |
6891 | definition in a shared library. */ | |
6892 | static asection mips_elf_acom_section; | |
6893 | static asymbol mips_elf_acom_symbol; | |
6894 | static asymbol *mips_elf_acom_symbol_ptr; | |
6895 | ||
738e5348 | 6896 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
6897 | |
6898 | void | |
9719ad41 | 6899 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
6900 | { |
6901 | elf_symbol_type *elfsym; | |
6902 | ||
738e5348 | 6903 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
6904 | elfsym = (elf_symbol_type *) asym; |
6905 | switch (elfsym->internal_elf_sym.st_shndx) | |
6906 | { | |
6907 | case SHN_MIPS_ACOMMON: | |
6908 | /* This section is used in a dynamically linked executable file. | |
6909 | It is an allocated common section. The dynamic linker can | |
6910 | either resolve these symbols to something in a shared | |
6911 | library, or it can just leave them here. For our purposes, | |
6912 | we can consider these symbols to be in a new section. */ | |
6913 | if (mips_elf_acom_section.name == NULL) | |
6914 | { | |
6915 | /* Initialize the acommon section. */ | |
6916 | mips_elf_acom_section.name = ".acommon"; | |
6917 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6918 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6919 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6920 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6921 | mips_elf_acom_symbol.name = ".acommon"; | |
6922 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6923 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6924 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6925 | } | |
6926 | asym->section = &mips_elf_acom_section; | |
6927 | break; | |
6928 | ||
6929 | case SHN_COMMON: | |
6930 | /* Common symbols less than the GP size are automatically | |
6931 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6932 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6933 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6934 | || IRIX_COMPAT (abfd) == ict_irix6) |
6935 | break; | |
6936 | /* Fall through. */ | |
6937 | case SHN_MIPS_SCOMMON: | |
6938 | if (mips_elf_scom_section.name == NULL) | |
6939 | { | |
6940 | /* Initialize the small common section. */ | |
6941 | mips_elf_scom_section.name = ".scommon"; | |
6942 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6943 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6944 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6945 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6946 | mips_elf_scom_symbol.name = ".scommon"; | |
6947 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6948 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6949 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6950 | } | |
6951 | asym->section = &mips_elf_scom_section; | |
6952 | asym->value = elfsym->internal_elf_sym.st_size; | |
6953 | break; | |
6954 | ||
6955 | case SHN_MIPS_SUNDEFINED: | |
6956 | asym->section = bfd_und_section_ptr; | |
6957 | break; | |
6958 | ||
b49e97c9 | 6959 | case SHN_MIPS_TEXT: |
00b4930b TS |
6960 | { |
6961 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6962 | ||
00b4930b TS |
6963 | if (section != NULL) |
6964 | { | |
6965 | asym->section = section; | |
6966 | /* MIPS_TEXT is a bit special, the address is not an offset | |
de194d85 | 6967 | to the base of the .text section. So subtract the section |
00b4930b TS |
6968 | base address to make it an offset. */ |
6969 | asym->value -= section->vma; | |
6970 | } | |
6971 | } | |
b49e97c9 TS |
6972 | break; |
6973 | ||
6974 | case SHN_MIPS_DATA: | |
00b4930b TS |
6975 | { |
6976 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6977 | ||
00b4930b TS |
6978 | if (section != NULL) |
6979 | { | |
6980 | asym->section = section; | |
6981 | /* MIPS_DATA is a bit special, the address is not an offset | |
de194d85 | 6982 | to the base of the .data section. So subtract the section |
00b4930b TS |
6983 | base address to make it an offset. */ |
6984 | asym->value -= section->vma; | |
6985 | } | |
6986 | } | |
b49e97c9 | 6987 | break; |
b49e97c9 | 6988 | } |
738e5348 | 6989 | |
df58fc94 RS |
6990 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
6991 | or microMIPS one. */ | |
738e5348 RS |
6992 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
6993 | && (asym->value & 1) != 0) | |
6994 | { | |
6995 | asym->value--; | |
e8faf7d1 | 6996 | if (MICROMIPS_P (abfd)) |
df58fc94 RS |
6997 | elfsym->internal_elf_sym.st_other |
6998 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
6999 | else | |
7000 | elfsym->internal_elf_sym.st_other | |
7001 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 7002 | } |
b49e97c9 TS |
7003 | } |
7004 | \f | |
8c946ed5 RS |
7005 | /* Implement elf_backend_eh_frame_address_size. This differs from |
7006 | the default in the way it handles EABI64. | |
7007 | ||
7008 | EABI64 was originally specified as an LP64 ABI, and that is what | |
7009 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
7010 | historically accepted the combination of -mabi=eabi and -mlong32, | |
7011 | and this ILP32 variation has become semi-official over time. | |
7012 | Both forms use elf32 and have pointer-sized FDE addresses. | |
7013 | ||
7014 | If an EABI object was generated by GCC 4.0 or above, it will have | |
7015 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
7016 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
7017 | have no special marking to distinguish them from LP64 objects. | |
7018 | ||
7019 | We don't want users of the official LP64 ABI to be punished for the | |
7020 | existence of the ILP32 variant, but at the same time, we don't want | |
7021 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
7022 | We therefore take the following approach: | |
7023 | ||
7024 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
07d6d2b8 | 7025 | determine the pointer size. |
8c946ed5 RS |
7026 | |
7027 | - Otherwise check the type of the first relocation. Assume that | |
07d6d2b8 | 7028 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. |
8c946ed5 RS |
7029 | |
7030 | - Otherwise punt. | |
7031 | ||
7032 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
7033 | compilers because, in the kind of output generated by those compilers, | |
7034 | the first relocation will be associated with either a CIE personality | |
7035 | routine or an FDE start address. Furthermore, the compilers never | |
7036 | used a special (non-pointer) encoding for this ABI. | |
7037 | ||
7038 | Checking the relocation type should also be safe because there is no | |
7039 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
7040 | did so. */ | |
7041 | ||
7042 | unsigned int | |
76c20d54 | 7043 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, const asection *sec) |
8c946ed5 RS |
7044 | { |
7045 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
7046 | return 8; | |
7047 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
7048 | { | |
7049 | bfd_boolean long32_p, long64_p; | |
7050 | ||
7051 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
7052 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
7053 | if (long32_p && long64_p) | |
7054 | return 0; | |
7055 | if (long32_p) | |
7056 | return 4; | |
7057 | if (long64_p) | |
7058 | return 8; | |
7059 | ||
7060 | if (sec->reloc_count > 0 | |
7061 | && elf_section_data (sec)->relocs != NULL | |
7062 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
7063 | == R_MIPS_64)) | |
7064 | return 8; | |
7065 | ||
7066 | return 0; | |
7067 | } | |
7068 | return 4; | |
7069 | } | |
7070 | \f | |
174fd7f9 RS |
7071 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
7072 | relocations against two unnamed section symbols to resolve to the | |
7073 | same address. For example, if we have code like: | |
7074 | ||
7075 | lw $4,%got_disp(.data)($gp) | |
7076 | lw $25,%got_disp(.text)($gp) | |
7077 | jalr $25 | |
7078 | ||
7079 | then the linker will resolve both relocations to .data and the program | |
7080 | will jump there rather than to .text. | |
7081 | ||
7082 | We can work around this problem by giving names to local section symbols. | |
7083 | This is also what the MIPSpro tools do. */ | |
7084 | ||
7085 | bfd_boolean | |
7086 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
7087 | { | |
7088 | return SGI_COMPAT (abfd); | |
7089 | } | |
7090 | \f | |
b49e97c9 TS |
7091 | /* Work over a section just before writing it out. This routine is |
7092 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
7093 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
7094 | a better way. */ | |
7095 | ||
b34976b6 | 7096 | bfd_boolean |
9719ad41 | 7097 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
7098 | { |
7099 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
7100 | && hdr->sh_size > 0) | |
7101 | { | |
7102 | bfd_byte buf[4]; | |
7103 | ||
b49e97c9 TS |
7104 | BFD_ASSERT (hdr->contents == NULL); |
7105 | ||
2d6dda71 MR |
7106 | if (hdr->sh_size != sizeof (Elf32_External_RegInfo)) |
7107 | { | |
7108 | _bfd_error_handler | |
2c1c9679 | 7109 | (_("%pB: incorrect `.reginfo' section size; " |
2dcf00ce AM |
7110 | "expected %" PRIu64 ", got %" PRIu64), |
7111 | abfd, (uint64_t) sizeof (Elf32_External_RegInfo), | |
7112 | (uint64_t) hdr->sh_size); | |
2d6dda71 MR |
7113 | bfd_set_error (bfd_error_bad_value); |
7114 | return FALSE; | |
7115 | } | |
7116 | ||
b49e97c9 TS |
7117 | if (bfd_seek (abfd, |
7118 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
7119 | SEEK_SET) != 0) | |
b34976b6 | 7120 | return FALSE; |
b49e97c9 | 7121 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7122 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 7123 | return FALSE; |
b49e97c9 TS |
7124 | } |
7125 | ||
7126 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
7127 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
7128 | && mips_elf_section_data (hdr->bfd_section) != NULL |
7129 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
7130 | { |
7131 | bfd_byte *contents, *l, *lend; | |
7132 | ||
f0abc2a1 AM |
7133 | /* We stored the section contents in the tdata field in the |
7134 | set_section_contents routine. We save the section contents | |
7135 | so that we don't have to read them again. | |
b49e97c9 TS |
7136 | At this point we know that elf_gp is set, so we can look |
7137 | through the section contents to see if there is an | |
7138 | ODK_REGINFO structure. */ | |
7139 | ||
f0abc2a1 | 7140 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
7141 | l = contents; |
7142 | lend = contents + hdr->sh_size; | |
7143 | while (l + sizeof (Elf_External_Options) <= lend) | |
7144 | { | |
7145 | Elf_Internal_Options intopt; | |
7146 | ||
7147 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7148 | &intopt); | |
1bc8074d MR |
7149 | if (intopt.size < sizeof (Elf_External_Options)) |
7150 | { | |
4eca0228 | 7151 | _bfd_error_handler |
695344c0 | 7152 | /* xgettext:c-format */ |
2c1c9679 | 7153 | (_("%pB: warning: bad `%s' option size %u smaller than" |
63a5468a | 7154 | " its header"), |
1bc8074d MR |
7155 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); |
7156 | break; | |
7157 | } | |
b49e97c9 TS |
7158 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
7159 | { | |
7160 | bfd_byte buf[8]; | |
7161 | ||
7162 | if (bfd_seek (abfd, | |
7163 | (hdr->sh_offset | |
7164 | + (l - contents) | |
7165 | + sizeof (Elf_External_Options) | |
7166 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
7167 | SEEK_SET) != 0) | |
b34976b6 | 7168 | return FALSE; |
b49e97c9 | 7169 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7170 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 7171 | return FALSE; |
b49e97c9 TS |
7172 | } |
7173 | else if (intopt.kind == ODK_REGINFO) | |
7174 | { | |
7175 | bfd_byte buf[4]; | |
7176 | ||
7177 | if (bfd_seek (abfd, | |
7178 | (hdr->sh_offset | |
7179 | + (l - contents) | |
7180 | + sizeof (Elf_External_Options) | |
7181 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
7182 | SEEK_SET) != 0) | |
b34976b6 | 7183 | return FALSE; |
b49e97c9 | 7184 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7185 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 7186 | return FALSE; |
b49e97c9 TS |
7187 | } |
7188 | l += intopt.size; | |
7189 | } | |
7190 | } | |
7191 | ||
7192 | if (hdr->bfd_section != NULL) | |
7193 | { | |
7194 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
7195 | ||
2d0f9ad9 JM |
7196 | /* .sbss is not handled specially here because the GNU/Linux |
7197 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
7198 | changing it back to NOBITS breaks the binary. The entry in | |
7199 | _bfd_mips_elf_special_sections will ensure the correct flags | |
7200 | are set on .sbss if BFD creates it without reading it from an | |
7201 | input file, and without special handling here the flags set | |
7202 | on it in an input file will be followed. */ | |
b49e97c9 TS |
7203 | if (strcmp (name, ".sdata") == 0 |
7204 | || strcmp (name, ".lit8") == 0 | |
7205 | || strcmp (name, ".lit4") == 0) | |
fd6f9d17 | 7206 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
b49e97c9 | 7207 | else if (strcmp (name, ".srdata") == 0) |
fd6f9d17 | 7208 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; |
b49e97c9 | 7209 | else if (strcmp (name, ".compact_rel") == 0) |
fd6f9d17 | 7210 | hdr->sh_flags = 0; |
b49e97c9 TS |
7211 | else if (strcmp (name, ".rtproc") == 0) |
7212 | { | |
7213 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
7214 | { | |
7215 | unsigned int adjust; | |
7216 | ||
7217 | adjust = hdr->sh_size % hdr->sh_addralign; | |
7218 | if (adjust != 0) | |
7219 | hdr->sh_size += hdr->sh_addralign - adjust; | |
7220 | } | |
7221 | } | |
7222 | } | |
7223 | ||
b34976b6 | 7224 | return TRUE; |
b49e97c9 TS |
7225 | } |
7226 | ||
7227 | /* Handle a MIPS specific section when reading an object file. This | |
7228 | is called when elfcode.h finds a section with an unknown type. | |
7229 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
7230 | ||
7231 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
7232 | how to. */ | |
7233 | ||
b34976b6 | 7234 | bfd_boolean |
6dc132d9 L |
7235 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
7236 | Elf_Internal_Shdr *hdr, | |
7237 | const char *name, | |
7238 | int shindex) | |
b49e97c9 TS |
7239 | { |
7240 | flagword flags = 0; | |
7241 | ||
7242 | /* There ought to be a place to keep ELF backend specific flags, but | |
7243 | at the moment there isn't one. We just keep track of the | |
7244 | sections by their name, instead. Fortunately, the ABI gives | |
7245 | suggested names for all the MIPS specific sections, so we will | |
7246 | probably get away with this. */ | |
7247 | switch (hdr->sh_type) | |
7248 | { | |
7249 | case SHT_MIPS_LIBLIST: | |
7250 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 7251 | return FALSE; |
b49e97c9 TS |
7252 | break; |
7253 | case SHT_MIPS_MSYM: | |
7254 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 7255 | return FALSE; |
b49e97c9 TS |
7256 | break; |
7257 | case SHT_MIPS_CONFLICT: | |
7258 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 7259 | return FALSE; |
b49e97c9 TS |
7260 | break; |
7261 | case SHT_MIPS_GPTAB: | |
0112cd26 | 7262 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 7263 | return FALSE; |
b49e97c9 TS |
7264 | break; |
7265 | case SHT_MIPS_UCODE: | |
7266 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 7267 | return FALSE; |
b49e97c9 TS |
7268 | break; |
7269 | case SHT_MIPS_DEBUG: | |
7270 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 7271 | return FALSE; |
b49e97c9 TS |
7272 | flags = SEC_DEBUGGING; |
7273 | break; | |
7274 | case SHT_MIPS_REGINFO: | |
7275 | if (strcmp (name, ".reginfo") != 0 | |
7276 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 7277 | return FALSE; |
b49e97c9 TS |
7278 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
7279 | break; | |
7280 | case SHT_MIPS_IFACE: | |
7281 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 7282 | return FALSE; |
b49e97c9 TS |
7283 | break; |
7284 | case SHT_MIPS_CONTENT: | |
0112cd26 | 7285 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 7286 | return FALSE; |
b49e97c9 TS |
7287 | break; |
7288 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 7289 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 7290 | return FALSE; |
b49e97c9 | 7291 | break; |
351cdf24 MF |
7292 | case SHT_MIPS_ABIFLAGS: |
7293 | if (!MIPS_ELF_ABIFLAGS_SECTION_NAME_P (name)) | |
7294 | return FALSE; | |
7295 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); | |
7296 | break; | |
b49e97c9 | 7297 | case SHT_MIPS_DWARF: |
1b315056 | 7298 | if (! CONST_STRNEQ (name, ".debug_") |
07d6d2b8 | 7299 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 7300 | return FALSE; |
b49e97c9 TS |
7301 | break; |
7302 | case SHT_MIPS_SYMBOL_LIB: | |
7303 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 7304 | return FALSE; |
b49e97c9 TS |
7305 | break; |
7306 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
7307 | if (! CONST_STRNEQ (name, ".MIPS.events") |
7308 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 7309 | return FALSE; |
b49e97c9 TS |
7310 | break; |
7311 | default: | |
cc2e31b9 | 7312 | break; |
b49e97c9 TS |
7313 | } |
7314 | ||
6dc132d9 | 7315 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 7316 | return FALSE; |
b49e97c9 TS |
7317 | |
7318 | if (flags) | |
7319 | { | |
7320 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
7321 | (bfd_get_section_flags (abfd, | |
7322 | hdr->bfd_section) | |
7323 | | flags))) | |
b34976b6 | 7324 | return FALSE; |
b49e97c9 TS |
7325 | } |
7326 | ||
351cdf24 MF |
7327 | if (hdr->sh_type == SHT_MIPS_ABIFLAGS) |
7328 | { | |
7329 | Elf_External_ABIFlags_v0 ext; | |
7330 | ||
7331 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, | |
7332 | &ext, 0, sizeof ext)) | |
7333 | return FALSE; | |
7334 | bfd_mips_elf_swap_abiflags_v0_in (abfd, &ext, | |
7335 | &mips_elf_tdata (abfd)->abiflags); | |
7336 | if (mips_elf_tdata (abfd)->abiflags.version != 0) | |
7337 | return FALSE; | |
7338 | mips_elf_tdata (abfd)->abiflags_valid = TRUE; | |
7339 | } | |
7340 | ||
b49e97c9 TS |
7341 | /* FIXME: We should record sh_info for a .gptab section. */ |
7342 | ||
7343 | /* For a .reginfo section, set the gp value in the tdata information | |
7344 | from the contents of this section. We need the gp value while | |
7345 | processing relocs, so we just get it now. The .reginfo section | |
7346 | is not used in the 64-bit MIPS ELF ABI. */ | |
7347 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
7348 | { | |
7349 | Elf32_External_RegInfo ext; | |
7350 | Elf32_RegInfo s; | |
7351 | ||
9719ad41 RS |
7352 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
7353 | &ext, 0, sizeof ext)) | |
b34976b6 | 7354 | return FALSE; |
b49e97c9 TS |
7355 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
7356 | elf_gp (abfd) = s.ri_gp_value; | |
7357 | } | |
7358 | ||
7359 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
7360 | set the gp value based on what we find. We may see both | |
7361 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
7362 | they should agree. */ | |
7363 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
7364 | { | |
7365 | bfd_byte *contents, *l, *lend; | |
7366 | ||
9719ad41 | 7367 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 7368 | if (contents == NULL) |
b34976b6 | 7369 | return FALSE; |
b49e97c9 | 7370 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 7371 | 0, hdr->sh_size)) |
b49e97c9 TS |
7372 | { |
7373 | free (contents); | |
b34976b6 | 7374 | return FALSE; |
b49e97c9 TS |
7375 | } |
7376 | l = contents; | |
7377 | lend = contents + hdr->sh_size; | |
7378 | while (l + sizeof (Elf_External_Options) <= lend) | |
7379 | { | |
7380 | Elf_Internal_Options intopt; | |
7381 | ||
7382 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7383 | &intopt); | |
1bc8074d MR |
7384 | if (intopt.size < sizeof (Elf_External_Options)) |
7385 | { | |
4eca0228 | 7386 | _bfd_error_handler |
695344c0 | 7387 | /* xgettext:c-format */ |
2c1c9679 | 7388 | (_("%pB: warning: bad `%s' option size %u smaller than" |
63a5468a | 7389 | " its header"), |
1bc8074d MR |
7390 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); |
7391 | break; | |
7392 | } | |
b49e97c9 TS |
7393 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
7394 | { | |
7395 | Elf64_Internal_RegInfo intreg; | |
7396 | ||
7397 | bfd_mips_elf64_swap_reginfo_in | |
7398 | (abfd, | |
7399 | ((Elf64_External_RegInfo *) | |
7400 | (l + sizeof (Elf_External_Options))), | |
7401 | &intreg); | |
7402 | elf_gp (abfd) = intreg.ri_gp_value; | |
7403 | } | |
7404 | else if (intopt.kind == ODK_REGINFO) | |
7405 | { | |
7406 | Elf32_RegInfo intreg; | |
7407 | ||
7408 | bfd_mips_elf32_swap_reginfo_in | |
7409 | (abfd, | |
7410 | ((Elf32_External_RegInfo *) | |
7411 | (l + sizeof (Elf_External_Options))), | |
7412 | &intreg); | |
7413 | elf_gp (abfd) = intreg.ri_gp_value; | |
7414 | } | |
7415 | l += intopt.size; | |
7416 | } | |
7417 | free (contents); | |
7418 | } | |
7419 | ||
b34976b6 | 7420 | return TRUE; |
b49e97c9 TS |
7421 | } |
7422 | ||
7423 | /* Set the correct type for a MIPS ELF section. We do this by the | |
7424 | section name, which is a hack, but ought to work. This routine is | |
7425 | used by both the 32-bit and the 64-bit ABI. */ | |
7426 | ||
b34976b6 | 7427 | bfd_boolean |
9719ad41 | 7428 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 7429 | { |
0414f35b | 7430 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
7431 | |
7432 | if (strcmp (name, ".liblist") == 0) | |
7433 | { | |
7434 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 7435 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
7436 | /* The sh_link field is set in final_write_processing. */ |
7437 | } | |
7438 | else if (strcmp (name, ".conflict") == 0) | |
7439 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 7440 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
7441 | { |
7442 | hdr->sh_type = SHT_MIPS_GPTAB; | |
7443 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
7444 | /* The sh_info field is set in final_write_processing. */ | |
7445 | } | |
7446 | else if (strcmp (name, ".ucode") == 0) | |
7447 | hdr->sh_type = SHT_MIPS_UCODE; | |
7448 | else if (strcmp (name, ".mdebug") == 0) | |
7449 | { | |
7450 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 7451 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
07d6d2b8 | 7452 | entsize of 0. FIXME: Does this matter? */ |
b49e97c9 TS |
7453 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) |
7454 | hdr->sh_entsize = 0; | |
7455 | else | |
7456 | hdr->sh_entsize = 1; | |
7457 | } | |
7458 | else if (strcmp (name, ".reginfo") == 0) | |
7459 | { | |
7460 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 7461 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
07d6d2b8 | 7462 | entsize of 0x18. FIXME: Does this matter? */ |
b49e97c9 TS |
7463 | if (SGI_COMPAT (abfd)) |
7464 | { | |
7465 | if ((abfd->flags & DYNAMIC) != 0) | |
7466 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7467 | else | |
7468 | hdr->sh_entsize = 1; | |
7469 | } | |
7470 | else | |
7471 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7472 | } | |
7473 | else if (SGI_COMPAT (abfd) | |
7474 | && (strcmp (name, ".hash") == 0 | |
7475 | || strcmp (name, ".dynamic") == 0 | |
7476 | || strcmp (name, ".dynstr") == 0)) | |
7477 | { | |
7478 | if (SGI_COMPAT (abfd)) | |
7479 | hdr->sh_entsize = 0; | |
7480 | #if 0 | |
8dc1a139 | 7481 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
7482 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
7483 | #endif | |
7484 | } | |
7485 | else if (strcmp (name, ".got") == 0 | |
7486 | || strcmp (name, ".srdata") == 0 | |
7487 | || strcmp (name, ".sdata") == 0 | |
7488 | || strcmp (name, ".sbss") == 0 | |
7489 | || strcmp (name, ".lit4") == 0 | |
7490 | || strcmp (name, ".lit8") == 0) | |
7491 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
7492 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
7493 | { | |
7494 | hdr->sh_type = SHT_MIPS_IFACE; | |
7495 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7496 | } | |
0112cd26 | 7497 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
7498 | { |
7499 | hdr->sh_type = SHT_MIPS_CONTENT; | |
7500 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7501 | /* The sh_info field is set in final_write_processing. */ | |
7502 | } | |
cc2e31b9 | 7503 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
7504 | { |
7505 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
7506 | hdr->sh_entsize = 1; | |
7507 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7508 | } | |
351cdf24 MF |
7509 | else if (CONST_STRNEQ (name, ".MIPS.abiflags")) |
7510 | { | |
7511 | hdr->sh_type = SHT_MIPS_ABIFLAGS; | |
7512 | hdr->sh_entsize = sizeof (Elf_External_ABIFlags_v0); | |
7513 | } | |
1b315056 | 7514 | else if (CONST_STRNEQ (name, ".debug_") |
07d6d2b8 | 7515 | || CONST_STRNEQ (name, ".zdebug_")) |
b5482f21 NC |
7516 | { |
7517 | hdr->sh_type = SHT_MIPS_DWARF; | |
7518 | ||
7519 | /* Irix facilities such as libexc expect a single .debug_frame | |
7520 | per executable, the system ones have NOSTRIP set and the linker | |
7521 | doesn't merge sections with different flags so ... */ | |
7522 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
7523 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7524 | } | |
b49e97c9 TS |
7525 | else if (strcmp (name, ".MIPS.symlib") == 0) |
7526 | { | |
7527 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
7528 | /* The sh_link and sh_info fields are set in | |
07d6d2b8 | 7529 | final_write_processing. */ |
b49e97c9 | 7530 | } |
0112cd26 NC |
7531 | else if (CONST_STRNEQ (name, ".MIPS.events") |
7532 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
7533 | { |
7534 | hdr->sh_type = SHT_MIPS_EVENTS; | |
7535 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7536 | /* The sh_link field is set in final_write_processing. */ | |
7537 | } | |
7538 | else if (strcmp (name, ".msym") == 0) | |
7539 | { | |
7540 | hdr->sh_type = SHT_MIPS_MSYM; | |
7541 | hdr->sh_flags |= SHF_ALLOC; | |
7542 | hdr->sh_entsize = 8; | |
7543 | } | |
7544 | ||
7a79a000 TS |
7545 | /* The generic elf_fake_sections will set up REL_HDR using the default |
7546 | kind of relocations. We used to set up a second header for the | |
7547 | non-default kind of relocations here, but only NewABI would use | |
7548 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
7549 | Thus we create those header only on demand now. */ | |
b49e97c9 | 7550 | |
b34976b6 | 7551 | return TRUE; |
b49e97c9 TS |
7552 | } |
7553 | ||
7554 | /* Given a BFD section, try to locate the corresponding ELF section | |
7555 | index. This is used by both the 32-bit and the 64-bit ABI. | |
7556 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
7557 | but for non-PIC objects we will certainly want support for at least | |
7558 | the .scommon section. */ | |
7559 | ||
b34976b6 | 7560 | bfd_boolean |
9719ad41 RS |
7561 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
7562 | asection *sec, int *retval) | |
b49e97c9 TS |
7563 | { |
7564 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
7565 | { | |
7566 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 7567 | return TRUE; |
b49e97c9 TS |
7568 | } |
7569 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
7570 | { | |
7571 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 7572 | return TRUE; |
b49e97c9 | 7573 | } |
b34976b6 | 7574 | return FALSE; |
b49e97c9 TS |
7575 | } |
7576 | \f | |
7577 | /* Hook called by the linker routine which adds symbols from an object | |
7578 | file. We must handle the special MIPS section numbers here. */ | |
7579 | ||
b34976b6 | 7580 | bfd_boolean |
9719ad41 | 7581 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 7582 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
7583 | flagword *flagsp ATTRIBUTE_UNUSED, |
7584 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
7585 | { |
7586 | if (SGI_COMPAT (abfd) | |
7587 | && (abfd->flags & DYNAMIC) != 0 | |
7588 | && strcmp (*namep, "_rld_new_interface") == 0) | |
7589 | { | |
8dc1a139 | 7590 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 7591 | *namep = NULL; |
b34976b6 | 7592 | return TRUE; |
b49e97c9 TS |
7593 | } |
7594 | ||
eedecc07 DD |
7595 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
7596 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7597 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7598 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7599 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7600 | is not done for them. */ | |
7601 | if (!NEWABI_P(abfd) | |
7602 | && (sym->st_shndx == SHN_ABS) | |
7603 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7604 | { | |
7605 | *namep = NULL; | |
7606 | return TRUE; | |
7607 | } | |
7608 | ||
b49e97c9 TS |
7609 | switch (sym->st_shndx) |
7610 | { | |
7611 | case SHN_COMMON: | |
7612 | /* Common symbols less than the GP size are automatically | |
7613 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7614 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7615 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7616 | || IRIX_COMPAT (abfd) == ict_irix6) |
7617 | break; | |
7618 | /* Fall through. */ | |
7619 | case SHN_MIPS_SCOMMON: | |
7620 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
7621 | (*secp)->flags |= SEC_IS_COMMON; | |
7622 | *valp = sym->st_size; | |
7623 | break; | |
7624 | ||
7625 | case SHN_MIPS_TEXT: | |
7626 | /* This section is used in a shared object. */ | |
698600e4 | 7627 | if (mips_elf_tdata (abfd)->elf_text_section == NULL) |
b49e97c9 TS |
7628 | { |
7629 | asymbol *elf_text_symbol; | |
7630 | asection *elf_text_section; | |
7631 | bfd_size_type amt = sizeof (asection); | |
7632 | ||
7633 | elf_text_section = bfd_zalloc (abfd, amt); | |
7634 | if (elf_text_section == NULL) | |
b34976b6 | 7635 | return FALSE; |
b49e97c9 TS |
7636 | |
7637 | amt = sizeof (asymbol); | |
7638 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7639 | if (elf_text_symbol == NULL) | |
b34976b6 | 7640 | return FALSE; |
b49e97c9 TS |
7641 | |
7642 | /* Initialize the section. */ | |
7643 | ||
698600e4 AM |
7644 | mips_elf_tdata (abfd)->elf_text_section = elf_text_section; |
7645 | mips_elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
b49e97c9 TS |
7646 | |
7647 | elf_text_section->symbol = elf_text_symbol; | |
698600e4 | 7648 | elf_text_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_text_symbol; |
b49e97c9 TS |
7649 | |
7650 | elf_text_section->name = ".text"; | |
7651 | elf_text_section->flags = SEC_NO_FLAGS; | |
7652 | elf_text_section->output_section = NULL; | |
7653 | elf_text_section->owner = abfd; | |
7654 | elf_text_symbol->name = ".text"; | |
7655 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7656 | elf_text_symbol->section = elf_text_section; | |
7657 | } | |
7658 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7659 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7660 | so I took it out. */ | |
698600e4 | 7661 | *secp = mips_elf_tdata (abfd)->elf_text_section; |
b49e97c9 TS |
7662 | break; |
7663 | ||
7664 | case SHN_MIPS_ACOMMON: | |
7665 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7666 | case SHN_MIPS_DATA: | |
7667 | /* This section is used in a shared object. */ | |
698600e4 | 7668 | if (mips_elf_tdata (abfd)->elf_data_section == NULL) |
b49e97c9 TS |
7669 | { |
7670 | asymbol *elf_data_symbol; | |
7671 | asection *elf_data_section; | |
7672 | bfd_size_type amt = sizeof (asection); | |
7673 | ||
7674 | elf_data_section = bfd_zalloc (abfd, amt); | |
7675 | if (elf_data_section == NULL) | |
b34976b6 | 7676 | return FALSE; |
b49e97c9 TS |
7677 | |
7678 | amt = sizeof (asymbol); | |
7679 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7680 | if (elf_data_symbol == NULL) | |
b34976b6 | 7681 | return FALSE; |
b49e97c9 TS |
7682 | |
7683 | /* Initialize the section. */ | |
7684 | ||
698600e4 AM |
7685 | mips_elf_tdata (abfd)->elf_data_section = elf_data_section; |
7686 | mips_elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
b49e97c9 TS |
7687 | |
7688 | elf_data_section->symbol = elf_data_symbol; | |
698600e4 | 7689 | elf_data_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_data_symbol; |
b49e97c9 TS |
7690 | |
7691 | elf_data_section->name = ".data"; | |
7692 | elf_data_section->flags = SEC_NO_FLAGS; | |
7693 | elf_data_section->output_section = NULL; | |
7694 | elf_data_section->owner = abfd; | |
7695 | elf_data_symbol->name = ".data"; | |
7696 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7697 | elf_data_symbol->section = elf_data_section; | |
7698 | } | |
7699 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7700 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7701 | so I took it out. */ | |
698600e4 | 7702 | *secp = mips_elf_tdata (abfd)->elf_data_section; |
b49e97c9 TS |
7703 | break; |
7704 | ||
7705 | case SHN_MIPS_SUNDEFINED: | |
7706 | *secp = bfd_und_section_ptr; | |
7707 | break; | |
7708 | } | |
7709 | ||
7710 | if (SGI_COMPAT (abfd) | |
0e1862bb | 7711 | && ! bfd_link_pic (info) |
f13a99db | 7712 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7713 | && strcmp (*namep, "__rld_obj_head") == 0) |
7714 | { | |
7715 | struct elf_link_hash_entry *h; | |
14a793b2 | 7716 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7717 | |
7718 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7719 | bh = NULL; |
b49e97c9 | 7720 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 7721 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 7722 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 7723 | return FALSE; |
14a793b2 AM |
7724 | |
7725 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7726 | h->non_elf = 0; |
7727 | h->def_regular = 1; | |
b49e97c9 TS |
7728 | h->type = STT_OBJECT; |
7729 | ||
c152c796 | 7730 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7731 | return FALSE; |
b49e97c9 | 7732 | |
b34976b6 | 7733 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b4082c70 | 7734 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7735 | } |
7736 | ||
7737 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7738 | odd. This will cause something like .word SYM to come up with | |
7739 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7740 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7741 | ++*valp; |
7742 | ||
b34976b6 | 7743 | return TRUE; |
b49e97c9 TS |
7744 | } |
7745 | ||
7746 | /* This hook function is called before the linker writes out a global | |
7747 | symbol. We mark symbols as small common if appropriate. This is | |
7748 | also where we undo the increment of the value for a mips16 symbol. */ | |
7749 | ||
6e0b88f1 | 7750 | int |
9719ad41 RS |
7751 | _bfd_mips_elf_link_output_symbol_hook |
7752 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7753 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7754 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7755 | { |
7756 | /* If we see a common symbol, which implies a relocatable link, then | |
7757 | if a symbol was small common in an input file, mark it as small | |
7758 | common in the output file. */ | |
7759 | if (sym->st_shndx == SHN_COMMON | |
7760 | && strcmp (input_sec->name, ".scommon") == 0) | |
7761 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7762 | ||
df58fc94 | 7763 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7764 | sym->st_value &= ~1; |
b49e97c9 | 7765 | |
6e0b88f1 | 7766 | return 1; |
b49e97c9 TS |
7767 | } |
7768 | \f | |
7769 | /* Functions for the dynamic linker. */ | |
7770 | ||
7771 | /* Create dynamic sections when linking against a dynamic object. */ | |
7772 | ||
b34976b6 | 7773 | bfd_boolean |
9719ad41 | 7774 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
7775 | { |
7776 | struct elf_link_hash_entry *h; | |
14a793b2 | 7777 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7778 | flagword flags; |
7779 | register asection *s; | |
7780 | const char * const *namep; | |
0a44bf69 | 7781 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7782 | |
0a44bf69 | 7783 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7784 | BFD_ASSERT (htab != NULL); |
7785 | ||
b49e97c9 TS |
7786 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
7787 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7788 | ||
0a44bf69 RS |
7789 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
7790 | EABI doesn't. */ | |
7791 | if (!htab->is_vxworks) | |
b49e97c9 | 7792 | { |
3d4d4302 | 7793 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
7794 | if (s != NULL) |
7795 | { | |
7796 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7797 | return FALSE; | |
7798 | } | |
b49e97c9 TS |
7799 | } |
7800 | ||
7801 | /* We need to create .got section. */ | |
23cc69b6 | 7802 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
7803 | return FALSE; |
7804 | ||
0a44bf69 | 7805 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 7806 | return FALSE; |
b49e97c9 | 7807 | |
b49e97c9 | 7808 | /* Create .stub section. */ |
3d4d4302 AM |
7809 | s = bfd_make_section_anyway_with_flags (abfd, |
7810 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
7811 | flags | SEC_CODE); | |
4e41d0d7 RS |
7812 | if (s == NULL |
7813 | || ! bfd_set_section_alignment (abfd, s, | |
7814 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
7815 | return FALSE; | |
7816 | htab->sstubs = s; | |
b49e97c9 | 7817 | |
e6aea42d | 7818 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
0e1862bb | 7819 | && bfd_link_executable (info) |
3d4d4302 | 7820 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 7821 | { |
3d4d4302 AM |
7822 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
7823 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 7824 | if (s == NULL |
b49e97c9 TS |
7825 | || ! bfd_set_section_alignment (abfd, s, |
7826 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 7827 | return FALSE; |
b49e97c9 TS |
7828 | } |
7829 | ||
7830 | /* On IRIX5, we adjust add some additional symbols and change the | |
7831 | alignments of several sections. There is no ABI documentation | |
7832 | indicating that this is necessary on IRIX6, nor any evidence that | |
7833 | the linker takes such action. */ | |
7834 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
7835 | { | |
7836 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7837 | { | |
14a793b2 | 7838 | bh = NULL; |
b49e97c9 | 7839 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
7840 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
7841 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7842 | return FALSE; |
14a793b2 AM |
7843 | |
7844 | h = (struct elf_link_hash_entry *) bh; | |
12f09816 | 7845 | h->mark = 1; |
f5385ebf AM |
7846 | h->non_elf = 0; |
7847 | h->def_regular = 1; | |
b49e97c9 TS |
7848 | h->type = STT_SECTION; |
7849 | ||
c152c796 | 7850 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7851 | return FALSE; |
b49e97c9 TS |
7852 | } |
7853 | ||
7854 | /* We need to create a .compact_rel section. */ | |
7855 | if (SGI_COMPAT (abfd)) | |
7856 | { | |
7857 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 7858 | return FALSE; |
b49e97c9 TS |
7859 | } |
7860 | ||
44c410de | 7861 | /* Change alignments of some sections. */ |
3d4d4302 | 7862 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 7863 | if (s != NULL) |
a253d456 NC |
7864 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7865 | ||
3d4d4302 | 7866 | s = bfd_get_linker_section (abfd, ".dynsym"); |
b49e97c9 | 7867 | if (s != NULL) |
a253d456 NC |
7868 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7869 | ||
3d4d4302 | 7870 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 7871 | if (s != NULL) |
a253d456 NC |
7872 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7873 | ||
3d4d4302 | 7874 | /* ??? */ |
b49e97c9 TS |
7875 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7876 | if (s != NULL) | |
a253d456 NC |
7877 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7878 | ||
3d4d4302 | 7879 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 7880 | if (s != NULL) |
a253d456 | 7881 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7882 | } |
7883 | ||
0e1862bb | 7884 | if (bfd_link_executable (info)) |
b49e97c9 | 7885 | { |
14a793b2 AM |
7886 | const char *name; |
7887 | ||
7888 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
7889 | bh = NULL; | |
7890 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
7891 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
7892 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7893 | return FALSE; |
14a793b2 AM |
7894 | |
7895 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7896 | h->non_elf = 0; |
7897 | h->def_regular = 1; | |
b49e97c9 TS |
7898 | h->type = STT_SECTION; |
7899 | ||
c152c796 | 7900 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7901 | return FALSE; |
b49e97c9 TS |
7902 | |
7903 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7904 | { | |
7905 | /* __rld_map is a four byte word located in the .data section | |
7906 | and is filled in by the rtld to contain a pointer to | |
7907 | the _r_debug structure. Its symbol value will be set in | |
7908 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 7909 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 7910 | BFD_ASSERT (s != NULL); |
14a793b2 | 7911 | |
0abfb97a L |
7912 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
7913 | bh = NULL; | |
7914 | if (!(_bfd_generic_link_add_one_symbol | |
7915 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
7916 | get_elf_backend_data (abfd)->collect, &bh))) | |
7917 | return FALSE; | |
b49e97c9 | 7918 | |
0abfb97a L |
7919 | h = (struct elf_link_hash_entry *) bh; |
7920 | h->non_elf = 0; | |
7921 | h->def_regular = 1; | |
7922 | h->type = STT_OBJECT; | |
7923 | ||
7924 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7925 | return FALSE; | |
b4082c70 | 7926 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7927 | } |
7928 | } | |
7929 | ||
861fb55a | 7930 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
c164a95d | 7931 | Also, on VxWorks, create the _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
861fb55a DJ |
7932 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
7933 | return FALSE; | |
7934 | ||
1bbce132 MR |
7935 | /* Do the usual VxWorks handling. */ |
7936 | if (htab->is_vxworks | |
7937 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
7938 | return FALSE; | |
0a44bf69 | 7939 | |
b34976b6 | 7940 | return TRUE; |
b49e97c9 TS |
7941 | } |
7942 | \f | |
c224138d RS |
7943 | /* Return true if relocation REL against section SEC is a REL rather than |
7944 | RELA relocation. RELOCS is the first relocation in the section and | |
7945 | ABFD is the bfd that contains SEC. */ | |
7946 | ||
7947 | static bfd_boolean | |
7948 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7949 | const Elf_Internal_Rela *relocs, | |
7950 | const Elf_Internal_Rela *rel) | |
7951 | { | |
7952 | Elf_Internal_Shdr *rel_hdr; | |
7953 | const struct elf_backend_data *bed; | |
7954 | ||
d4730f92 BS |
7955 | /* To determine which flavor of relocation this is, we depend on the |
7956 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
7957 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
7958 | if (rel_hdr == NULL) | |
7959 | return FALSE; | |
c224138d | 7960 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
7961 | return ((size_t) (rel - relocs) |
7962 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
7963 | } |
7964 | ||
7965 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7966 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7967 | of the section that REL is against. */ | |
7968 | ||
7969 | static bfd_vma | |
7970 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7971 | reloc_howto_type *howto, bfd_byte *contents) | |
7972 | { | |
7973 | bfd_byte *location; | |
7974 | unsigned int r_type; | |
7975 | bfd_vma addend; | |
17c6c9d9 | 7976 | bfd_vma bytes; |
c224138d RS |
7977 | |
7978 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7979 | location = contents + rel->r_offset; | |
7980 | ||
7981 | /* Get the addend, which is stored in the input file. */ | |
df58fc94 | 7982 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, FALSE, location); |
17c6c9d9 | 7983 | bytes = mips_elf_obtain_contents (howto, rel, abfd, contents); |
df58fc94 | 7984 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, FALSE, location); |
c224138d | 7985 | |
17c6c9d9 MR |
7986 | addend = bytes & howto->src_mask; |
7987 | ||
7988 | /* Shift is 2, unusually, for microMIPS JALX. Adjust the addend | |
7989 | accordingly. */ | |
7990 | if (r_type == R_MICROMIPS_26_S1 && (bytes >> 26) == 0x3c) | |
7991 | addend <<= 1; | |
7992 | ||
7993 | return addend; | |
c224138d RS |
7994 | } |
7995 | ||
7996 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7997 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7998 | and update *ADDEND with the final addend. Return true on success | |
7999 | or false if the LO16 could not be found. RELEND is the exclusive | |
8000 | upper bound on the relocations for REL's section. */ | |
8001 | ||
8002 | static bfd_boolean | |
8003 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
8004 | const Elf_Internal_Rela *rel, | |
8005 | const Elf_Internal_Rela *relend, | |
8006 | bfd_byte *contents, bfd_vma *addend) | |
8007 | { | |
8008 | unsigned int r_type, lo16_type; | |
8009 | const Elf_Internal_Rela *lo16_relocation; | |
8010 | reloc_howto_type *lo16_howto; | |
8011 | bfd_vma l; | |
8012 | ||
8013 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 8014 | if (mips16_reloc_p (r_type)) |
c224138d | 8015 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
8016 | else if (micromips_reloc_p (r_type)) |
8017 | lo16_type = R_MICROMIPS_LO16; | |
7361da2c AB |
8018 | else if (r_type == R_MIPS_PCHI16) |
8019 | lo16_type = R_MIPS_PCLO16; | |
c224138d RS |
8020 | else |
8021 | lo16_type = R_MIPS_LO16; | |
8022 | ||
8023 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
8024 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
8025 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
8026 | LO16 value.) | |
8027 | ||
8028 | Scan ahead to find a matching LO16 relocation. | |
8029 | ||
8030 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
8031 | be immediately following. However, for the IRIX6 ABI, the next | |
8032 | relocation may be a composed relocation consisting of several | |
8033 | relocations for the same address. In that case, the R_MIPS_LO16 | |
8034 | relocation may occur as one of these. We permit a similar | |
8035 | extension in general, as that is useful for GCC. | |
8036 | ||
8037 | In some cases GCC dead code elimination removes the LO16 but keeps | |
8038 | the corresponding HI16. This is strictly speaking a violation of | |
8039 | the ABI but not immediately harmful. */ | |
8040 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
8041 | if (lo16_relocation == NULL) | |
8042 | return FALSE; | |
8043 | ||
8044 | /* Obtain the addend kept there. */ | |
8045 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
8046 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
8047 | ||
8048 | l <<= lo16_howto->rightshift; | |
8049 | l = _bfd_mips_elf_sign_extend (l, 16); | |
8050 | ||
8051 | *addend <<= 16; | |
8052 | *addend += l; | |
8053 | return TRUE; | |
8054 | } | |
8055 | ||
8056 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
8057 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
8058 | already holds the contents if it is nonull on entry. */ | |
8059 | ||
8060 | static bfd_boolean | |
8061 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
8062 | { | |
8063 | if (*contents) | |
8064 | return TRUE; | |
8065 | ||
8066 | /* Get cached copy if it exists. */ | |
8067 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8068 | { | |
8069 | *contents = elf_section_data (sec)->this_hdr.contents; | |
8070 | return TRUE; | |
8071 | } | |
8072 | ||
8073 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
8074 | } | |
8075 | ||
1bbce132 MR |
8076 | /* Make a new PLT record to keep internal data. */ |
8077 | ||
8078 | static struct plt_entry * | |
8079 | mips_elf_make_plt_record (bfd *abfd) | |
8080 | { | |
8081 | struct plt_entry *entry; | |
8082 | ||
8083 | entry = bfd_zalloc (abfd, sizeof (*entry)); | |
8084 | if (entry == NULL) | |
8085 | return NULL; | |
8086 | ||
8087 | entry->stub_offset = MINUS_ONE; | |
8088 | entry->mips_offset = MINUS_ONE; | |
8089 | entry->comp_offset = MINUS_ONE; | |
8090 | entry->gotplt_index = MINUS_ONE; | |
8091 | return entry; | |
8092 | } | |
8093 | ||
b49e97c9 | 8094 | /* Look through the relocs for a section during the first phase, and |
1bbce132 MR |
8095 | allocate space in the global offset table and record the need for |
8096 | standard MIPS and compressed procedure linkage table entries. */ | |
b49e97c9 | 8097 | |
b34976b6 | 8098 | bfd_boolean |
9719ad41 RS |
8099 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
8100 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
8101 | { |
8102 | const char *name; | |
8103 | bfd *dynobj; | |
8104 | Elf_Internal_Shdr *symtab_hdr; | |
8105 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
8106 | size_t extsymoff; |
8107 | const Elf_Internal_Rela *rel; | |
8108 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 8109 | asection *sreloc; |
9c5bfbb7 | 8110 | const struct elf_backend_data *bed; |
0a44bf69 | 8111 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
8112 | bfd_byte *contents; |
8113 | bfd_vma addend; | |
8114 | reloc_howto_type *howto; | |
b49e97c9 | 8115 | |
0e1862bb | 8116 | if (bfd_link_relocatable (info)) |
b34976b6 | 8117 | return TRUE; |
b49e97c9 | 8118 | |
0a44bf69 | 8119 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8120 | BFD_ASSERT (htab != NULL); |
8121 | ||
b49e97c9 TS |
8122 | dynobj = elf_hash_table (info)->dynobj; |
8123 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8124 | sym_hashes = elf_sym_hashes (abfd); | |
8125 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8126 | ||
738e5348 | 8127 | bed = get_elf_backend_data (abfd); |
056bafd4 | 8128 | rel_end = relocs + sec->reloc_count; |
738e5348 | 8129 | |
b49e97c9 TS |
8130 | /* Check for the mips16 stub sections. */ |
8131 | ||
8132 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 8133 | if (FN_STUB_P (name)) |
b49e97c9 TS |
8134 | { |
8135 | unsigned long r_symndx; | |
8136 | ||
8137 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8138 | this is for. */ |
b49e97c9 | 8139 | |
cb4437b8 | 8140 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8141 | if (r_symndx == 0) |
8142 | { | |
4eca0228 | 8143 | _bfd_error_handler |
695344c0 | 8144 | /* xgettext:c-format */ |
2c1c9679 | 8145 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8146 | " stub section `%s'"), |
8147 | abfd, name); | |
8148 | bfd_set_error (bfd_error_bad_value); | |
8149 | return FALSE; | |
8150 | } | |
b49e97c9 TS |
8151 | |
8152 | if (r_symndx < extsymoff | |
8153 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8154 | { | |
8155 | asection *o; | |
8156 | ||
8157 | /* This stub is for a local symbol. This stub will only be | |
07d6d2b8 AM |
8158 | needed if there is some relocation in this BFD, other |
8159 | than a 16 bit function call, which refers to this symbol. */ | |
b49e97c9 TS |
8160 | for (o = abfd->sections; o != NULL; o = o->next) |
8161 | { | |
8162 | Elf_Internal_Rela *sec_relocs; | |
8163 | const Elf_Internal_Rela *r, *rend; | |
8164 | ||
8165 | /* We can ignore stub sections when looking for relocs. */ | |
8166 | if ((o->flags & SEC_RELOC) == 0 | |
8167 | || o->reloc_count == 0 | |
738e5348 | 8168 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
8169 | continue; |
8170 | ||
45d6a902 | 8171 | sec_relocs |
9719ad41 | 8172 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 8173 | info->keep_memory); |
b49e97c9 | 8174 | if (sec_relocs == NULL) |
b34976b6 | 8175 | return FALSE; |
b49e97c9 TS |
8176 | |
8177 | rend = sec_relocs + o->reloc_count; | |
8178 | for (r = sec_relocs; r < rend; r++) | |
8179 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 8180 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
8181 | break; |
8182 | ||
6cdc0ccc | 8183 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
8184 | free (sec_relocs); |
8185 | ||
8186 | if (r < rend) | |
8187 | break; | |
8188 | } | |
8189 | ||
8190 | if (o == NULL) | |
8191 | { | |
8192 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8193 | not need it. Since this function is called before |
8194 | the linker maps input sections to output sections, we | |
8195 | can easily discard it by setting the SEC_EXCLUDE | |
8196 | flag. */ | |
b49e97c9 | 8197 | sec->flags |= SEC_EXCLUDE; |
b34976b6 | 8198 | return TRUE; |
b49e97c9 TS |
8199 | } |
8200 | ||
8201 | /* Record this stub in an array of local symbol stubs for | |
07d6d2b8 | 8202 | this BFD. */ |
698600e4 | 8203 | if (mips_elf_tdata (abfd)->local_stubs == NULL) |
b49e97c9 TS |
8204 | { |
8205 | unsigned long symcount; | |
8206 | asection **n; | |
8207 | bfd_size_type amt; | |
8208 | ||
8209 | if (elf_bad_symtab (abfd)) | |
8210 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8211 | else | |
8212 | symcount = symtab_hdr->sh_info; | |
8213 | amt = symcount * sizeof (asection *); | |
9719ad41 | 8214 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 8215 | if (n == NULL) |
b34976b6 | 8216 | return FALSE; |
698600e4 | 8217 | mips_elf_tdata (abfd)->local_stubs = n; |
b49e97c9 TS |
8218 | } |
8219 | ||
b9d58d71 | 8220 | sec->flags |= SEC_KEEP; |
698600e4 | 8221 | mips_elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
b49e97c9 TS |
8222 | |
8223 | /* We don't need to set mips16_stubs_seen in this case. | |
07d6d2b8 AM |
8224 | That flag is used to see whether we need to look through |
8225 | the global symbol table for stubs. We don't need to set | |
8226 | it here, because we just have a local stub. */ | |
b49e97c9 TS |
8227 | } |
8228 | else | |
8229 | { | |
8230 | struct mips_elf_link_hash_entry *h; | |
8231 | ||
8232 | h = ((struct mips_elf_link_hash_entry *) | |
8233 | sym_hashes[r_symndx - extsymoff]); | |
8234 | ||
973a3492 L |
8235 | while (h->root.root.type == bfd_link_hash_indirect |
8236 | || h->root.root.type == bfd_link_hash_warning) | |
8237 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
8238 | ||
b49e97c9 TS |
8239 | /* H is the symbol this stub is for. */ |
8240 | ||
b9d58d71 TS |
8241 | /* If we already have an appropriate stub for this function, we |
8242 | don't need another one, so we can discard this one. Since | |
8243 | this function is called before the linker maps input sections | |
8244 | to output sections, we can easily discard it by setting the | |
8245 | SEC_EXCLUDE flag. */ | |
8246 | if (h->fn_stub != NULL) | |
8247 | { | |
8248 | sec->flags |= SEC_EXCLUDE; | |
8249 | return TRUE; | |
8250 | } | |
8251 | ||
8252 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 8253 | h->fn_stub = sec; |
b34976b6 | 8254 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
8255 | } |
8256 | } | |
b9d58d71 | 8257 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
8258 | { |
8259 | unsigned long r_symndx; | |
8260 | struct mips_elf_link_hash_entry *h; | |
8261 | asection **loc; | |
8262 | ||
8263 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8264 | this is for. */ |
b49e97c9 | 8265 | |
cb4437b8 | 8266 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8267 | if (r_symndx == 0) |
8268 | { | |
4eca0228 | 8269 | _bfd_error_handler |
695344c0 | 8270 | /* xgettext:c-format */ |
2c1c9679 | 8271 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8272 | " stub section `%s'"), |
8273 | abfd, name); | |
8274 | bfd_set_error (bfd_error_bad_value); | |
8275 | return FALSE; | |
8276 | } | |
b49e97c9 TS |
8277 | |
8278 | if (r_symndx < extsymoff | |
8279 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8280 | { | |
b9d58d71 | 8281 | asection *o; |
b49e97c9 | 8282 | |
b9d58d71 | 8283 | /* This stub is for a local symbol. This stub will only be |
07d6d2b8 AM |
8284 | needed if there is some relocation (R_MIPS16_26) in this BFD |
8285 | that refers to this symbol. */ | |
b9d58d71 TS |
8286 | for (o = abfd->sections; o != NULL; o = o->next) |
8287 | { | |
8288 | Elf_Internal_Rela *sec_relocs; | |
8289 | const Elf_Internal_Rela *r, *rend; | |
8290 | ||
8291 | /* We can ignore stub sections when looking for relocs. */ | |
8292 | if ((o->flags & SEC_RELOC) == 0 | |
8293 | || o->reloc_count == 0 | |
738e5348 | 8294 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
8295 | continue; |
8296 | ||
8297 | sec_relocs | |
8298 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
8299 | info->keep_memory); | |
8300 | if (sec_relocs == NULL) | |
8301 | return FALSE; | |
8302 | ||
8303 | rend = sec_relocs + o->reloc_count; | |
8304 | for (r = sec_relocs; r < rend; r++) | |
8305 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
8306 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
8307 | break; | |
8308 | ||
8309 | if (elf_section_data (o)->relocs != sec_relocs) | |
8310 | free (sec_relocs); | |
8311 | ||
8312 | if (r < rend) | |
8313 | break; | |
8314 | } | |
8315 | ||
8316 | if (o == NULL) | |
8317 | { | |
8318 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8319 | not need it. Since this function is called before |
8320 | the linker maps input sections to output sections, we | |
8321 | can easily discard it by setting the SEC_EXCLUDE | |
8322 | flag. */ | |
b9d58d71 TS |
8323 | sec->flags |= SEC_EXCLUDE; |
8324 | return TRUE; | |
8325 | } | |
8326 | ||
8327 | /* Record this stub in an array of local symbol call_stubs for | |
07d6d2b8 | 8328 | this BFD. */ |
698600e4 | 8329 | if (mips_elf_tdata (abfd)->local_call_stubs == NULL) |
b9d58d71 TS |
8330 | { |
8331 | unsigned long symcount; | |
8332 | asection **n; | |
8333 | bfd_size_type amt; | |
8334 | ||
8335 | if (elf_bad_symtab (abfd)) | |
8336 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8337 | else | |
8338 | symcount = symtab_hdr->sh_info; | |
8339 | amt = symcount * sizeof (asection *); | |
8340 | n = bfd_zalloc (abfd, amt); | |
8341 | if (n == NULL) | |
8342 | return FALSE; | |
698600e4 | 8343 | mips_elf_tdata (abfd)->local_call_stubs = n; |
b9d58d71 | 8344 | } |
b49e97c9 | 8345 | |
b9d58d71 | 8346 | sec->flags |= SEC_KEEP; |
698600e4 | 8347 | mips_elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; |
b49e97c9 | 8348 | |
b9d58d71 | 8349 | /* We don't need to set mips16_stubs_seen in this case. |
07d6d2b8 AM |
8350 | That flag is used to see whether we need to look through |
8351 | the global symbol table for stubs. We don't need to set | |
8352 | it here, because we just have a local stub. */ | |
b9d58d71 | 8353 | } |
b49e97c9 | 8354 | else |
b49e97c9 | 8355 | { |
b9d58d71 TS |
8356 | h = ((struct mips_elf_link_hash_entry *) |
8357 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 8358 | |
b9d58d71 | 8359 | /* H is the symbol this stub is for. */ |
68ffbac6 | 8360 | |
b9d58d71 TS |
8361 | if (CALL_FP_STUB_P (name)) |
8362 | loc = &h->call_fp_stub; | |
8363 | else | |
8364 | loc = &h->call_stub; | |
68ffbac6 | 8365 | |
b9d58d71 TS |
8366 | /* If we already have an appropriate stub for this function, we |
8367 | don't need another one, so we can discard this one. Since | |
8368 | this function is called before the linker maps input sections | |
8369 | to output sections, we can easily discard it by setting the | |
8370 | SEC_EXCLUDE flag. */ | |
8371 | if (*loc != NULL) | |
8372 | { | |
8373 | sec->flags |= SEC_EXCLUDE; | |
8374 | return TRUE; | |
8375 | } | |
b49e97c9 | 8376 | |
b9d58d71 TS |
8377 | sec->flags |= SEC_KEEP; |
8378 | *loc = sec; | |
8379 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
8380 | } | |
b49e97c9 TS |
8381 | } |
8382 | ||
b49e97c9 | 8383 | sreloc = NULL; |
c224138d | 8384 | contents = NULL; |
b49e97c9 TS |
8385 | for (rel = relocs; rel < rel_end; ++rel) |
8386 | { | |
8387 | unsigned long r_symndx; | |
8388 | unsigned int r_type; | |
8389 | struct elf_link_hash_entry *h; | |
861fb55a | 8390 | bfd_boolean can_make_dynamic_p; |
c5d6fa44 RS |
8391 | bfd_boolean call_reloc_p; |
8392 | bfd_boolean constrain_symbol_p; | |
b49e97c9 TS |
8393 | |
8394 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
8395 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
8396 | ||
8397 | if (r_symndx < extsymoff) | |
8398 | h = NULL; | |
8399 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
8400 | { | |
4eca0228 | 8401 | _bfd_error_handler |
695344c0 | 8402 | /* xgettext:c-format */ |
2c1c9679 | 8403 | (_("%pB: malformed reloc detected for section %s"), |
d003868e | 8404 | abfd, name); |
b49e97c9 | 8405 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8406 | return FALSE; |
b49e97c9 TS |
8407 | } |
8408 | else | |
8409 | { | |
8410 | h = sym_hashes[r_symndx - extsymoff]; | |
81fbe831 AM |
8411 | if (h != NULL) |
8412 | { | |
8413 | while (h->root.type == bfd_link_hash_indirect | |
8414 | || h->root.type == bfd_link_hash_warning) | |
8415 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 | 8416 | } |
861fb55a | 8417 | } |
b49e97c9 | 8418 | |
861fb55a DJ |
8419 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
8420 | relocation into a dynamic one. */ | |
8421 | can_make_dynamic_p = FALSE; | |
c5d6fa44 RS |
8422 | |
8423 | /* Set CALL_RELOC_P to true if the relocation is for a call, | |
8424 | and if pointer equality therefore doesn't matter. */ | |
8425 | call_reloc_p = FALSE; | |
8426 | ||
8427 | /* Set CONSTRAIN_SYMBOL_P if we need to take the relocation | |
8428 | into account when deciding how to define the symbol. | |
8429 | Relocations in nonallocatable sections such as .pdr and | |
8430 | .debug* should have no effect. */ | |
8431 | constrain_symbol_p = ((sec->flags & SEC_ALLOC) != 0); | |
8432 | ||
861fb55a DJ |
8433 | switch (r_type) |
8434 | { | |
861fb55a DJ |
8435 | case R_MIPS_CALL16: |
8436 | case R_MIPS_CALL_HI16: | |
8437 | case R_MIPS_CALL_LO16: | |
c5d6fa44 RS |
8438 | case R_MIPS16_CALL16: |
8439 | case R_MICROMIPS_CALL16: | |
8440 | case R_MICROMIPS_CALL_HI16: | |
8441 | case R_MICROMIPS_CALL_LO16: | |
8442 | call_reloc_p = TRUE; | |
8443 | /* Fall through. */ | |
8444 | ||
8445 | case R_MIPS_GOT16: | |
861fb55a DJ |
8446 | case R_MIPS_GOT_HI16: |
8447 | case R_MIPS_GOT_LO16: | |
8448 | case R_MIPS_GOT_PAGE: | |
8449 | case R_MIPS_GOT_OFST: | |
8450 | case R_MIPS_GOT_DISP: | |
8451 | case R_MIPS_TLS_GOTTPREL: | |
8452 | case R_MIPS_TLS_GD: | |
8453 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8454 | case R_MIPS16_GOT16: |
d0f13682 CLT |
8455 | case R_MIPS16_TLS_GOTTPREL: |
8456 | case R_MIPS16_TLS_GD: | |
8457 | case R_MIPS16_TLS_LDM: | |
df58fc94 | 8458 | case R_MICROMIPS_GOT16: |
df58fc94 RS |
8459 | case R_MICROMIPS_GOT_HI16: |
8460 | case R_MICROMIPS_GOT_LO16: | |
8461 | case R_MICROMIPS_GOT_PAGE: | |
8462 | case R_MICROMIPS_GOT_OFST: | |
8463 | case R_MICROMIPS_GOT_DISP: | |
8464 | case R_MICROMIPS_TLS_GOTTPREL: | |
8465 | case R_MICROMIPS_TLS_GD: | |
8466 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
8467 | if (dynobj == NULL) |
8468 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
8469 | if (!mips_elf_create_got_section (dynobj, info)) | |
8470 | return FALSE; | |
0e1862bb | 8471 | if (htab->is_vxworks && !bfd_link_pic (info)) |
b49e97c9 | 8472 | { |
4eca0228 | 8473 | _bfd_error_handler |
695344c0 | 8474 | /* xgettext:c-format */ |
2dcf00ce AM |
8475 | (_("%pB: GOT reloc at %#" PRIx64 " not expected in executables"), |
8476 | abfd, (uint64_t) rel->r_offset); | |
861fb55a DJ |
8477 | bfd_set_error (bfd_error_bad_value); |
8478 | return FALSE; | |
b49e97c9 | 8479 | } |
c5d6fa44 | 8480 | can_make_dynamic_p = TRUE; |
861fb55a | 8481 | break; |
b49e97c9 | 8482 | |
c5d6fa44 | 8483 | case R_MIPS_NONE: |
99da6b5f | 8484 | case R_MIPS_JALR: |
df58fc94 | 8485 | case R_MICROMIPS_JALR: |
c5d6fa44 RS |
8486 | /* These relocations have empty fields and are purely there to |
8487 | provide link information. The symbol value doesn't matter. */ | |
8488 | constrain_symbol_p = FALSE; | |
8489 | break; | |
8490 | ||
8491 | case R_MIPS_GPREL16: | |
8492 | case R_MIPS_GPREL32: | |
8493 | case R_MIPS16_GPREL: | |
8494 | case R_MICROMIPS_GPREL16: | |
8495 | /* GP-relative relocations always resolve to a definition in a | |
8496 | regular input file, ignoring the one-definition rule. This is | |
8497 | important for the GP setup sequence in NewABI code, which | |
8498 | always resolves to a local function even if other relocations | |
8499 | against the symbol wouldn't. */ | |
8500 | constrain_symbol_p = FALSE; | |
99da6b5f AN |
8501 | break; |
8502 | ||
861fb55a DJ |
8503 | case R_MIPS_32: |
8504 | case R_MIPS_REL32: | |
8505 | case R_MIPS_64: | |
8506 | /* In VxWorks executables, references to external symbols | |
8507 | must be handled using copy relocs or PLT entries; it is not | |
8508 | possible to convert this relocation into a dynamic one. | |
8509 | ||
8510 | For executables that use PLTs and copy-relocs, we have a | |
8511 | choice between converting the relocation into a dynamic | |
8512 | one or using copy relocations or PLT entries. It is | |
8513 | usually better to do the former, unless the relocation is | |
8514 | against a read-only section. */ | |
0e1862bb | 8515 | if ((bfd_link_pic (info) |
861fb55a DJ |
8516 | || (h != NULL |
8517 | && !htab->is_vxworks | |
8518 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
8519 | && !(!info->nocopyreloc | |
8520 | && !PIC_OBJECT_P (abfd) | |
8521 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
8522 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 8523 | { |
861fb55a | 8524 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
8525 | if (dynobj == NULL) |
8526 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
861fb55a | 8527 | } |
c5d6fa44 | 8528 | break; |
b49e97c9 | 8529 | |
861fb55a DJ |
8530 | case R_MIPS_26: |
8531 | case R_MIPS_PC16: | |
7361da2c AB |
8532 | case R_MIPS_PC21_S2: |
8533 | case R_MIPS_PC26_S2: | |
861fb55a | 8534 | case R_MIPS16_26: |
c9775dde | 8535 | case R_MIPS16_PC16_S1: |
df58fc94 RS |
8536 | case R_MICROMIPS_26_S1: |
8537 | case R_MICROMIPS_PC7_S1: | |
8538 | case R_MICROMIPS_PC10_S1: | |
8539 | case R_MICROMIPS_PC16_S1: | |
8540 | case R_MICROMIPS_PC23_S2: | |
c5d6fa44 | 8541 | call_reloc_p = TRUE; |
861fb55a | 8542 | break; |
b49e97c9 TS |
8543 | } |
8544 | ||
0a44bf69 RS |
8545 | if (h) |
8546 | { | |
c5d6fa44 RS |
8547 | if (constrain_symbol_p) |
8548 | { | |
8549 | if (!can_make_dynamic_p) | |
8550 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = 1; | |
8551 | ||
8552 | if (!call_reloc_p) | |
8553 | h->pointer_equality_needed = 1; | |
8554 | ||
8555 | /* We must not create a stub for a symbol that has | |
8556 | relocations related to taking the function's address. | |
8557 | This doesn't apply to VxWorks, where CALL relocs refer | |
8558 | to a .got.plt entry instead of a normal .got entry. */ | |
8559 | if (!htab->is_vxworks && (!can_make_dynamic_p || !call_reloc_p)) | |
8560 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
8561 | } | |
8562 | ||
0a44bf69 RS |
8563 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
8564 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
8565 | room for them in .rela.dyn. */ | |
8566 | if (is_gott_symbol (info, h)) | |
8567 | { | |
8568 | if (sreloc == NULL) | |
8569 | { | |
8570 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
8571 | if (sreloc == NULL) | |
8572 | return FALSE; | |
8573 | } | |
8574 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
8575 | if (MIPS_ELF_READONLY_SECTION (sec)) |
8576 | /* We tell the dynamic linker that there are | |
8577 | relocations against the text segment. */ | |
8578 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
8579 | } |
8580 | } | |
df58fc94 RS |
8581 | else if (call_lo16_reloc_p (r_type) |
8582 | || got_lo16_reloc_p (r_type) | |
8583 | || got_disp_reloc_p (r_type) | |
738e5348 | 8584 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
8585 | { |
8586 | /* We may need a local GOT entry for this relocation. We | |
8587 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
8588 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
8589 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
8590 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 8591 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 8592 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 8593 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 | 8594 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
e641e783 | 8595 | rel->r_addend, info, r_type)) |
f4416af6 | 8596 | return FALSE; |
b49e97c9 TS |
8597 | } |
8598 | ||
8f0c309a CLT |
8599 | if (h != NULL |
8600 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
8601 | ELF_ST_IS_MIPS16 (h->other))) | |
861fb55a DJ |
8602 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; |
8603 | ||
b49e97c9 TS |
8604 | switch (r_type) |
8605 | { | |
8606 | case R_MIPS_CALL16: | |
738e5348 | 8607 | case R_MIPS16_CALL16: |
df58fc94 | 8608 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8609 | if (h == NULL) |
8610 | { | |
4eca0228 | 8611 | _bfd_error_handler |
695344c0 | 8612 | /* xgettext:c-format */ |
2dcf00ce AM |
8613 | (_("%pB: CALL16 reloc at %#" PRIx64 " not against global symbol"), |
8614 | abfd, (uint64_t) rel->r_offset); | |
b49e97c9 | 8615 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8616 | return FALSE; |
b49e97c9 TS |
8617 | } |
8618 | /* Fall through. */ | |
8619 | ||
8620 | case R_MIPS_CALL_HI16: | |
8621 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8622 | case R_MICROMIPS_CALL_HI16: |
8623 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8624 | if (h != NULL) |
8625 | { | |
6ccf4795 RS |
8626 | /* Make sure there is room in the regular GOT to hold the |
8627 | function's address. We may eliminate it in favour of | |
8628 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
e641e783 RS |
8629 | if (!mips_elf_record_global_got_symbol (h, abfd, info, TRUE, |
8630 | r_type)) | |
b34976b6 | 8631 | return FALSE; |
b49e97c9 TS |
8632 | |
8633 | /* We need a stub, not a plt entry for the undefined | |
8634 | function. But we record it as if it needs plt. See | |
c152c796 | 8635 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8636 | h->needs_plt = 1; |
b49e97c9 TS |
8637 | h->type = STT_FUNC; |
8638 | } | |
8639 | break; | |
8640 | ||
0fdc1bf1 | 8641 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8642 | case R_MICROMIPS_GOT_PAGE: |
738e5348 | 8643 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8644 | case R_MIPS_GOT16: |
8645 | case R_MIPS_GOT_HI16: | |
8646 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8647 | case R_MICROMIPS_GOT16: |
8648 | case R_MICROMIPS_GOT_HI16: | |
8649 | case R_MICROMIPS_GOT_LO16: | |
8650 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8651 | { |
3a3b6725 DJ |
8652 | /* This relocation needs (or may need, if h != NULL) a |
8653 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8654 | know for sure until we know whether the symbol is | |
8655 | preemptible. */ | |
c224138d RS |
8656 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8657 | { | |
8658 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8659 | return FALSE; | |
8660 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
8661 | addend = mips_elf_read_rel_addend (abfd, rel, | |
8662 | howto, contents); | |
9684f078 | 8663 | if (got16_reloc_p (r_type)) |
c224138d RS |
8664 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, |
8665 | contents, &addend); | |
8666 | else | |
8667 | addend <<= howto->rightshift; | |
8668 | } | |
8669 | else | |
8670 | addend = rel->r_addend; | |
13db6b44 RS |
8671 | if (!mips_elf_record_got_page_ref (info, abfd, r_symndx, |
8672 | h, addend)) | |
c224138d | 8673 | return FALSE; |
13db6b44 RS |
8674 | |
8675 | if (h) | |
8676 | { | |
8677 | struct mips_elf_link_hash_entry *hmips = | |
8678 | (struct mips_elf_link_hash_entry *) h; | |
8679 | ||
8680 | /* This symbol is definitely not overridable. */ | |
8681 | if (hmips->root.def_regular | |
0e1862bb | 8682 | && ! (bfd_link_pic (info) && ! info->symbolic |
13db6b44 RS |
8683 | && ! hmips->root.forced_local)) |
8684 | h = NULL; | |
8685 | } | |
c224138d | 8686 | } |
13db6b44 RS |
8687 | /* If this is a global, overridable symbol, GOT_PAGE will |
8688 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d RS |
8689 | /* Fall through. */ |
8690 | ||
b49e97c9 | 8691 | case R_MIPS_GOT_DISP: |
df58fc94 | 8692 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 | 8693 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
e641e783 | 8694 | FALSE, r_type)) |
b34976b6 | 8695 | return FALSE; |
b49e97c9 TS |
8696 | break; |
8697 | ||
0f20cc35 | 8698 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 8699 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 8700 | case R_MICROMIPS_TLS_GOTTPREL: |
0e1862bb | 8701 | if (bfd_link_pic (info)) |
0f20cc35 DJ |
8702 | info->flags |= DF_STATIC_TLS; |
8703 | /* Fall through */ | |
8704 | ||
8705 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8706 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
8707 | case R_MICROMIPS_TLS_LDM: |
8708 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 8709 | { |
cf35638d | 8710 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
8711 | h = NULL; |
8712 | } | |
8713 | /* Fall through */ | |
8714 | ||
8715 | case R_MIPS_TLS_GD: | |
d0f13682 | 8716 | case R_MIPS16_TLS_GD: |
df58fc94 | 8717 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
8718 | /* This symbol requires a global offset table entry, or two |
8719 | for TLS GD relocations. */ | |
e641e783 RS |
8720 | if (h != NULL) |
8721 | { | |
8722 | if (!mips_elf_record_global_got_symbol (h, abfd, info, | |
8723 | FALSE, r_type)) | |
8724 | return FALSE; | |
8725 | } | |
8726 | else | |
8727 | { | |
8728 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, | |
8729 | rel->r_addend, | |
8730 | info, r_type)) | |
8731 | return FALSE; | |
8732 | } | |
0f20cc35 DJ |
8733 | break; |
8734 | ||
b49e97c9 TS |
8735 | case R_MIPS_32: |
8736 | case R_MIPS_REL32: | |
8737 | case R_MIPS_64: | |
0a44bf69 RS |
8738 | /* In VxWorks executables, references to external symbols |
8739 | are handled using copy relocs or PLT stubs, so there's | |
8740 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 8741 | if (can_make_dynamic_p) |
b49e97c9 TS |
8742 | { |
8743 | if (sreloc == NULL) | |
8744 | { | |
0a44bf69 | 8745 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 8746 | if (sreloc == NULL) |
f4416af6 | 8747 | return FALSE; |
b49e97c9 | 8748 | } |
0e1862bb | 8749 | if (bfd_link_pic (info) && h == NULL) |
82f0cfbd EC |
8750 | { |
8751 | /* When creating a shared object, we must copy these | |
8752 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
8753 | relocs. Make room for this reloc in .rel(a).dyn. */ |
8754 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 8755 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8756 | /* We tell the dynamic linker that there are |
8757 | relocations against the text segment. */ | |
8758 | info->flags |= DF_TEXTREL; | |
8759 | } | |
b49e97c9 TS |
8760 | else |
8761 | { | |
8762 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 8763 | |
9a59ad6b DJ |
8764 | /* For a shared object, we must copy this relocation |
8765 | unless the symbol turns out to be undefined and | |
8766 | weak with non-default visibility, in which case | |
8767 | it will be left as zero. | |
8768 | ||
8769 | We could elide R_MIPS_REL32 for locally binding symbols | |
8770 | in shared libraries, but do not yet do so. | |
8771 | ||
8772 | For an executable, we only need to copy this | |
8773 | reloc if the symbol is defined in a dynamic | |
8774 | object. */ | |
b49e97c9 TS |
8775 | hmips = (struct mips_elf_link_hash_entry *) h; |
8776 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 8777 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8778 | /* We need it to tell the dynamic linker if there |
8779 | are relocations against the text segment. */ | |
8780 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 8781 | } |
b49e97c9 TS |
8782 | } |
8783 | ||
8784 | if (SGI_COMPAT (abfd)) | |
8785 | mips_elf_hash_table (info)->compact_rel_size += | |
8786 | sizeof (Elf32_External_crinfo); | |
8787 | break; | |
8788 | ||
8789 | case R_MIPS_26: | |
8790 | case R_MIPS_GPREL16: | |
8791 | case R_MIPS_LITERAL: | |
8792 | case R_MIPS_GPREL32: | |
df58fc94 RS |
8793 | case R_MICROMIPS_26_S1: |
8794 | case R_MICROMIPS_GPREL16: | |
8795 | case R_MICROMIPS_LITERAL: | |
8796 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
8797 | if (SGI_COMPAT (abfd)) |
8798 | mips_elf_hash_table (info)->compact_rel_size += | |
8799 | sizeof (Elf32_External_crinfo); | |
8800 | break; | |
8801 | ||
8802 | /* This relocation describes the C++ object vtable hierarchy. | |
8803 | Reconstruct it for later use during GC. */ | |
8804 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 8805 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 8806 | return FALSE; |
b49e97c9 TS |
8807 | break; |
8808 | ||
8809 | /* This relocation describes which C++ vtable entries are actually | |
8810 | used. Record for later use during GC. */ | |
8811 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
8812 | BFD_ASSERT (h != NULL); |
8813 | if (h != NULL | |
8814 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 8815 | return FALSE; |
b49e97c9 TS |
8816 | break; |
8817 | ||
8818 | default: | |
8819 | break; | |
8820 | } | |
8821 | ||
1bbce132 | 8822 | /* Record the need for a PLT entry. At this point we don't know |
07d6d2b8 AM |
8823 | yet if we are going to create a PLT in the first place, but |
8824 | we only record whether the relocation requires a standard MIPS | |
8825 | or a compressed code entry anyway. If we don't make a PLT after | |
8826 | all, then we'll just ignore these arrangements. Likewise if | |
8827 | a PLT entry is not created because the symbol is satisfied | |
8828 | locally. */ | |
1bbce132 | 8829 | if (h != NULL |
54806ffa MR |
8830 | && (branch_reloc_p (r_type) |
8831 | || mips16_branch_reloc_p (r_type) | |
8832 | || micromips_branch_reloc_p (r_type)) | |
1bbce132 MR |
8833 | && !SYMBOL_CALLS_LOCAL (info, h)) |
8834 | { | |
8835 | if (h->plt.plist == NULL) | |
8836 | h->plt.plist = mips_elf_make_plt_record (abfd); | |
8837 | if (h->plt.plist == NULL) | |
8838 | return FALSE; | |
8839 | ||
54806ffa | 8840 | if (branch_reloc_p (r_type)) |
1bbce132 MR |
8841 | h->plt.plist->need_mips = TRUE; |
8842 | else | |
8843 | h->plt.plist->need_comp = TRUE; | |
8844 | } | |
8845 | ||
738e5348 RS |
8846 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
8847 | if there is one. We only need to handle global symbols here; | |
8848 | we decide whether to keep or delete stubs for local symbols | |
8849 | when processing the stub's relocations. */ | |
b49e97c9 | 8850 | if (h != NULL |
738e5348 RS |
8851 | && !mips16_call_reloc_p (r_type) |
8852 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
8853 | { |
8854 | struct mips_elf_link_hash_entry *mh; | |
8855 | ||
8856 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 8857 | mh->need_fn_stub = TRUE; |
b49e97c9 | 8858 | } |
861fb55a DJ |
8859 | |
8860 | /* Refuse some position-dependent relocations when creating a | |
8861 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
8862 | not PIC, but we can create dynamic relocations and the result | |
8863 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
8864 | combined with R_MIPS_GOT16. */ | |
0e1862bb | 8865 | if (bfd_link_pic (info)) |
861fb55a DJ |
8866 | { |
8867 | switch (r_type) | |
8868 | { | |
8869 | case R_MIPS16_HI16: | |
8870 | case R_MIPS_HI16: | |
8871 | case R_MIPS_HIGHER: | |
8872 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
8873 | case R_MICROMIPS_HI16: |
8874 | case R_MICROMIPS_HIGHER: | |
8875 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
8876 | /* Don't refuse a high part relocation if it's against |
8877 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 8878 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
8879 | break; |
8880 | ||
8881 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
8882 | and has a special meaning. */ | |
8883 | if (!NEWABI_P (abfd) && h != NULL | |
8884 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
8885 | break; | |
8886 | ||
0fc1eb3c RS |
8887 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
8888 | if (is_gott_symbol (info, h)) | |
8889 | break; | |
8890 | ||
861fb55a DJ |
8891 | /* FALLTHROUGH */ |
8892 | ||
8893 | case R_MIPS16_26: | |
8894 | case R_MIPS_26: | |
df58fc94 | 8895 | case R_MICROMIPS_26_S1: |
861fb55a | 8896 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); |
4eca0228 | 8897 | _bfd_error_handler |
695344c0 | 8898 | /* xgettext:c-format */ |
871b3ab2 | 8899 | (_("%pB: relocation %s against `%s' can not be used" |
63a5468a | 8900 | " when making a shared object; recompile with -fPIC"), |
861fb55a DJ |
8901 | abfd, howto->name, |
8902 | (h) ? h->root.root.string : "a local symbol"); | |
8903 | bfd_set_error (bfd_error_bad_value); | |
8904 | return FALSE; | |
8905 | default: | |
8906 | break; | |
8907 | } | |
8908 | } | |
b49e97c9 TS |
8909 | } |
8910 | ||
b34976b6 | 8911 | return TRUE; |
b49e97c9 TS |
8912 | } |
8913 | \f | |
9a59ad6b DJ |
8914 | /* Allocate space for global sym dynamic relocs. */ |
8915 | ||
8916 | static bfd_boolean | |
8917 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8918 | { | |
8919 | struct bfd_link_info *info = inf; | |
8920 | bfd *dynobj; | |
8921 | struct mips_elf_link_hash_entry *hmips; | |
8922 | struct mips_elf_link_hash_table *htab; | |
8923 | ||
8924 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8925 | BFD_ASSERT (htab != NULL); |
8926 | ||
9a59ad6b DJ |
8927 | dynobj = elf_hash_table (info)->dynobj; |
8928 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8929 | ||
8930 | /* VxWorks executables are handled elsewhere; we only need to | |
8931 | allocate relocations in shared objects. */ | |
0e1862bb | 8932 | if (htab->is_vxworks && !bfd_link_pic (info)) |
9a59ad6b DJ |
8933 | return TRUE; |
8934 | ||
7686d77d AM |
8935 | /* Ignore indirect symbols. All relocations against such symbols |
8936 | will be redirected to the target symbol. */ | |
8937 | if (h->root.type == bfd_link_hash_indirect) | |
63897e2c RS |
8938 | return TRUE; |
8939 | ||
9a59ad6b DJ |
8940 | /* If this symbol is defined in a dynamic object, or we are creating |
8941 | a shared library, we will need to copy any R_MIPS_32 or | |
8942 | R_MIPS_REL32 relocs against it into the output file. */ | |
0e1862bb | 8943 | if (! bfd_link_relocatable (info) |
9a59ad6b DJ |
8944 | && hmips->possibly_dynamic_relocs != 0 |
8945 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 8946 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
0e1862bb | 8947 | || bfd_link_pic (info))) |
9a59ad6b DJ |
8948 | { |
8949 | bfd_boolean do_copy = TRUE; | |
8950 | ||
8951 | if (h->root.type == bfd_link_hash_undefweak) | |
8952 | { | |
262e07d0 MR |
8953 | /* Do not copy relocations for undefined weak symbols that |
8954 | we are not going to export. */ | |
8955 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
9a59ad6b DJ |
8956 | do_copy = FALSE; |
8957 | ||
8958 | /* Make sure undefined weak symbols are output as a dynamic | |
8959 | symbol in PIEs. */ | |
8960 | else if (h->dynindx == -1 && !h->forced_local) | |
8961 | { | |
8962 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8963 | return FALSE; | |
8964 | } | |
8965 | } | |
8966 | ||
8967 | if (do_copy) | |
8968 | { | |
aff469fa | 8969 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
8970 | the SVR4 psABI requires it to have a dynamic symbol table |
8971 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
8972 | relocations against it. | |
8973 | ||
8974 | VxWorks does not enforce the same mapping between the GOT | |
8975 | and the symbol table, so the same requirement does not | |
8976 | apply there. */ | |
6ccf4795 RS |
8977 | if (!htab->is_vxworks) |
8978 | { | |
8979 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8980 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8981 | hmips->got_only_for_calls = FALSE; | |
8982 | } | |
aff469fa | 8983 | |
9a59ad6b DJ |
8984 | mips_elf_allocate_dynamic_relocations |
8985 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8986 | if (hmips->readonly_reloc) | |
8987 | /* We tell the dynamic linker that there are relocations | |
8988 | against the text segment. */ | |
8989 | info->flags |= DF_TEXTREL; | |
8990 | } | |
8991 | } | |
8992 | ||
8993 | return TRUE; | |
8994 | } | |
8995 | ||
b49e97c9 TS |
8996 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8997 | regular object. The current definition is in some section of the | |
8998 | dynamic object, but we're not including those sections. We have to | |
8999 | change the definition to something the rest of the link can | |
9000 | understand. */ | |
9001 | ||
b34976b6 | 9002 | bfd_boolean |
9719ad41 RS |
9003 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
9004 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
9005 | { |
9006 | bfd *dynobj; | |
9007 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 9008 | struct mips_elf_link_hash_table *htab; |
5474d94f | 9009 | asection *s, *srel; |
b49e97c9 | 9010 | |
5108fc1b | 9011 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
9012 | BFD_ASSERT (htab != NULL); |
9013 | ||
b49e97c9 | 9014 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 9015 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
9016 | |
9017 | /* Make sure we know what is going on here. */ | |
9018 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 9019 | && (h->needs_plt |
60d67dc8 | 9020 | || h->is_weakalias |
f5385ebf AM |
9021 | || (h->def_dynamic |
9022 | && h->ref_regular | |
9023 | && !h->def_regular))); | |
b49e97c9 | 9024 | |
b49e97c9 | 9025 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9026 | |
861fb55a DJ |
9027 | /* If there are call relocations against an externally-defined symbol, |
9028 | see whether we can create a MIPS lazy-binding stub for it. We can | |
9029 | only do this if all references to the function are through call | |
9030 | relocations, and in that case, the traditional lazy-binding stubs | |
9031 | are much more efficient than PLT entries. | |
9032 | ||
9033 | Traditional stubs are only available on SVR4 psABI-based systems; | |
9034 | VxWorks always uses PLTs instead. */ | |
9035 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
9036 | { |
9037 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 9038 | return TRUE; |
b49e97c9 TS |
9039 | |
9040 | /* If this symbol is not defined in a regular file, then set | |
9041 | the symbol to the stub location. This is required to make | |
9042 | function pointers compare as equal between the normal | |
9043 | executable and the shared library. */ | |
4b8377e7 MR |
9044 | if (!h->def_regular |
9045 | && !bfd_is_abs_section (htab->sstubs->output_section)) | |
b49e97c9 | 9046 | { |
33bb52fb RS |
9047 | hmips->needs_lazy_stub = TRUE; |
9048 | htab->lazy_stub_count++; | |
b34976b6 | 9049 | return TRUE; |
b49e97c9 TS |
9050 | } |
9051 | } | |
861fb55a DJ |
9052 | /* As above, VxWorks requires PLT entries for externally-defined |
9053 | functions that are only accessed through call relocations. | |
b49e97c9 | 9054 | |
861fb55a DJ |
9055 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
9056 | are static-only relocations against an externally-defined function. | |
9057 | This can technically occur for shared libraries if there are | |
9058 | branches to the symbol, although it is unlikely that this will be | |
9059 | used in practice due to the short ranges involved. It can occur | |
9060 | for any relative or absolute relocation in executables; in that | |
9061 | case, the PLT entry becomes the function's canonical address. */ | |
9062 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
9063 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
9064 | && htab->use_plts_and_copy_relocs | |
9065 | && !SYMBOL_CALLS_LOCAL (info, h) | |
9066 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
9067 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 9068 | { |
1bbce132 MR |
9069 | bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd); |
9070 | bfd_boolean newabi_p = NEWABI_P (info->output_bfd); | |
9071 | ||
9072 | /* If this is the first symbol to need a PLT entry, then make some | |
07d6d2b8 AM |
9073 | basic setup. Also work out PLT entry sizes. We'll need them |
9074 | for PLT offset calculations. */ | |
1bbce132 | 9075 | if (htab->plt_mips_offset + htab->plt_comp_offset == 0) |
861fb55a | 9076 | { |
ce558b89 | 9077 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
1bbce132 | 9078 | BFD_ASSERT (htab->plt_got_index == 0); |
0a44bf69 | 9079 | |
861fb55a DJ |
9080 | /* If we're using the PLT additions to the psABI, each PLT |
9081 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
9082 | Encourage better cache usage by aligning. We do this | |
9083 | lazily to avoid pessimizing traditional objects. */ | |
9084 | if (!htab->is_vxworks | |
ce558b89 | 9085 | && !bfd_set_section_alignment (dynobj, htab->root.splt, 5)) |
861fb55a | 9086 | return FALSE; |
0a44bf69 | 9087 | |
861fb55a DJ |
9088 | /* Make sure that .got.plt is word-aligned. We do this lazily |
9089 | for the same reason as above. */ | |
ce558b89 | 9090 | if (!bfd_set_section_alignment (dynobj, htab->root.sgotplt, |
861fb55a DJ |
9091 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
9092 | return FALSE; | |
0a44bf69 | 9093 | |
861fb55a DJ |
9094 | /* On non-VxWorks targets, the first two entries in .got.plt |
9095 | are reserved. */ | |
9096 | if (!htab->is_vxworks) | |
1bbce132 MR |
9097 | htab->plt_got_index |
9098 | += (get_elf_backend_data (dynobj)->got_header_size | |
9099 | / MIPS_ELF_GOT_SIZE (dynobj)); | |
0a44bf69 | 9100 | |
861fb55a DJ |
9101 | /* On VxWorks, also allocate room for the header's |
9102 | .rela.plt.unloaded entries. */ | |
0e1862bb | 9103 | if (htab->is_vxworks && !bfd_link_pic (info)) |
0a44bf69 | 9104 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
1bbce132 MR |
9105 | |
9106 | /* Now work out the sizes of individual PLT entries. */ | |
0e1862bb | 9107 | if (htab->is_vxworks && bfd_link_pic (info)) |
1bbce132 MR |
9108 | htab->plt_mips_entry_size |
9109 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
9110 | else if (htab->is_vxworks) | |
9111 | htab->plt_mips_entry_size | |
9112 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
9113 | else if (newabi_p) | |
9114 | htab->plt_mips_entry_size | |
9115 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
833794fc | 9116 | else if (!micromips_p) |
1bbce132 MR |
9117 | { |
9118 | htab->plt_mips_entry_size | |
9119 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9120 | htab->plt_comp_entry_size | |
833794fc MR |
9121 | = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); |
9122 | } | |
9123 | else if (htab->insn32) | |
9124 | { | |
9125 | htab->plt_mips_entry_size | |
9126 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9127 | htab->plt_comp_entry_size | |
9128 | = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
1bbce132 MR |
9129 | } |
9130 | else | |
9131 | { | |
9132 | htab->plt_mips_entry_size | |
9133 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9134 | htab->plt_comp_entry_size | |
833794fc | 9135 | = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); |
1bbce132 | 9136 | } |
0a44bf69 RS |
9137 | } |
9138 | ||
1bbce132 MR |
9139 | if (h->plt.plist == NULL) |
9140 | h->plt.plist = mips_elf_make_plt_record (dynobj); | |
9141 | if (h->plt.plist == NULL) | |
9142 | return FALSE; | |
9143 | ||
9144 | /* There are no defined MIPS16 or microMIPS PLT entries for VxWorks, | |
07d6d2b8 | 9145 | n32 or n64, so always use a standard entry there. |
1bbce132 | 9146 | |
07d6d2b8 AM |
9147 | If the symbol has a MIPS16 call stub and gets a PLT entry, then |
9148 | all MIPS16 calls will go via that stub, and there is no benefit | |
9149 | to having a MIPS16 entry. And in the case of call_stub a | |
9150 | standard entry actually has to be used as the stub ends with a J | |
9151 | instruction. */ | |
1bbce132 MR |
9152 | if (newabi_p |
9153 | || htab->is_vxworks | |
9154 | || hmips->call_stub | |
9155 | || hmips->call_fp_stub) | |
9156 | { | |
9157 | h->plt.plist->need_mips = TRUE; | |
9158 | h->plt.plist->need_comp = FALSE; | |
9159 | } | |
9160 | ||
9161 | /* Otherwise, if there are no direct calls to the function, we | |
07d6d2b8 AM |
9162 | have a free choice of whether to use standard or compressed |
9163 | entries. Prefer microMIPS entries if the object is known to | |
9164 | contain microMIPS code, so that it becomes possible to create | |
9165 | pure microMIPS binaries. Prefer standard entries otherwise, | |
9166 | because MIPS16 ones are no smaller and are usually slower. */ | |
1bbce132 MR |
9167 | if (!h->plt.plist->need_mips && !h->plt.plist->need_comp) |
9168 | { | |
9169 | if (micromips_p) | |
9170 | h->plt.plist->need_comp = TRUE; | |
9171 | else | |
9172 | h->plt.plist->need_mips = TRUE; | |
9173 | } | |
9174 | ||
9175 | if (h->plt.plist->need_mips) | |
9176 | { | |
9177 | h->plt.plist->mips_offset = htab->plt_mips_offset; | |
9178 | htab->plt_mips_offset += htab->plt_mips_entry_size; | |
9179 | } | |
9180 | if (h->plt.plist->need_comp) | |
9181 | { | |
9182 | h->plt.plist->comp_offset = htab->plt_comp_offset; | |
9183 | htab->plt_comp_offset += htab->plt_comp_entry_size; | |
9184 | } | |
9185 | ||
9186 | /* Reserve the corresponding .got.plt entry now too. */ | |
9187 | h->plt.plist->gotplt_index = htab->plt_got_index++; | |
0a44bf69 RS |
9188 | |
9189 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 9190 | symbol's value to the address of the stub. */ |
0e1862bb | 9191 | if (!bfd_link_pic (info) && !h->def_regular) |
1bbce132 | 9192 | hmips->use_plt_entry = TRUE; |
0a44bf69 | 9193 | |
1bbce132 | 9194 | /* Make room for the R_MIPS_JUMP_SLOT relocation. */ |
ce558b89 AM |
9195 | htab->root.srelplt->size += (htab->is_vxworks |
9196 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
9197 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
9198 | |
9199 | /* Make room for the .rela.plt.unloaded relocations. */ | |
0e1862bb | 9200 | if (htab->is_vxworks && !bfd_link_pic (info)) |
0a44bf69 RS |
9201 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
9202 | ||
861fb55a DJ |
9203 | /* All relocations against this symbol that could have been made |
9204 | dynamic will now refer to the PLT entry instead. */ | |
9205 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 9206 | |
0a44bf69 RS |
9207 | return TRUE; |
9208 | } | |
9209 | ||
9210 | /* If this is a weak symbol, and there is a real definition, the | |
9211 | processor independent code will have arranged for us to see the | |
9212 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 9213 | if (h->is_weakalias) |
0a44bf69 | 9214 | { |
60d67dc8 AM |
9215 | struct elf_link_hash_entry *def = weakdef (h); |
9216 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
9217 | h->root.u.def.section = def->root.u.def.section; | |
9218 | h->root.u.def.value = def->root.u.def.value; | |
0a44bf69 RS |
9219 | return TRUE; |
9220 | } | |
9221 | ||
861fb55a DJ |
9222 | /* Otherwise, there is nothing further to do for symbols defined |
9223 | in regular objects. */ | |
9224 | if (h->def_regular) | |
0a44bf69 RS |
9225 | return TRUE; |
9226 | ||
861fb55a DJ |
9227 | /* There's also nothing more to do if we'll convert all relocations |
9228 | against this symbol into dynamic relocations. */ | |
9229 | if (!hmips->has_static_relocs) | |
9230 | return TRUE; | |
9231 | ||
9232 | /* We're now relying on copy relocations. Complain if we have | |
9233 | some that we can't convert. */ | |
0e1862bb | 9234 | if (!htab->use_plts_and_copy_relocs || bfd_link_pic (info)) |
861fb55a | 9235 | { |
4eca0228 AM |
9236 | _bfd_error_handler (_("non-dynamic relocations refer to " |
9237 | "dynamic symbol %s"), | |
9238 | h->root.root.string); | |
861fb55a DJ |
9239 | bfd_set_error (bfd_error_bad_value); |
9240 | return FALSE; | |
9241 | } | |
9242 | ||
0a44bf69 RS |
9243 | /* We must allocate the symbol in our .dynbss section, which will |
9244 | become part of the .bss section of the executable. There will be | |
9245 | an entry for this symbol in the .dynsym section. The dynamic | |
9246 | object will contain position independent code, so all references | |
9247 | from the dynamic object to this symbol will go through the global | |
9248 | offset table. The dynamic linker will use the .dynsym entry to | |
9249 | determine the address it must put in the global offset table, so | |
9250 | both the dynamic object and the regular object will refer to the | |
9251 | same memory location for the variable. */ | |
9252 | ||
5474d94f AM |
9253 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
9254 | { | |
9255 | s = htab->root.sdynrelro; | |
9256 | srel = htab->root.sreldynrelro; | |
9257 | } | |
9258 | else | |
9259 | { | |
9260 | s = htab->root.sdynbss; | |
9261 | srel = htab->root.srelbss; | |
9262 | } | |
0a44bf69 RS |
9263 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
9264 | { | |
861fb55a | 9265 | if (htab->is_vxworks) |
5474d94f | 9266 | srel->size += sizeof (Elf32_External_Rela); |
861fb55a DJ |
9267 | else |
9268 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
9269 | h->needs_copy = 1; |
9270 | } | |
9271 | ||
861fb55a DJ |
9272 | /* All relocations against this symbol that could have been made |
9273 | dynamic will now refer to the local copy instead. */ | |
9274 | hmips->possibly_dynamic_relocs = 0; | |
9275 | ||
5474d94f | 9276 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
0a44bf69 | 9277 | } |
b49e97c9 TS |
9278 | \f |
9279 | /* This function is called after all the input files have been read, | |
9280 | and the input sections have been assigned to output sections. We | |
9281 | check for any mips16 stub sections that we can discard. */ | |
9282 | ||
b34976b6 | 9283 | bfd_boolean |
9719ad41 RS |
9284 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
9285 | struct bfd_link_info *info) | |
b49e97c9 | 9286 | { |
351cdf24 | 9287 | asection *sect; |
0a44bf69 | 9288 | struct mips_elf_link_hash_table *htab; |
861fb55a | 9289 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
9290 | |
9291 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9292 | BFD_ASSERT (htab != NULL); |
f4416af6 | 9293 | |
b49e97c9 | 9294 | /* The .reginfo section has a fixed size. */ |
351cdf24 MF |
9295 | sect = bfd_get_section_by_name (output_bfd, ".reginfo"); |
9296 | if (sect != NULL) | |
6798f8bf MR |
9297 | { |
9298 | bfd_set_section_size (output_bfd, sect, sizeof (Elf32_External_RegInfo)); | |
9299 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; | |
9300 | } | |
351cdf24 MF |
9301 | |
9302 | /* The .MIPS.abiflags section has a fixed size. */ | |
9303 | sect = bfd_get_section_by_name (output_bfd, ".MIPS.abiflags"); | |
9304 | if (sect != NULL) | |
6798f8bf MR |
9305 | { |
9306 | bfd_set_section_size (output_bfd, sect, | |
9307 | sizeof (Elf_External_ABIFlags_v0)); | |
9308 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; | |
9309 | } | |
b49e97c9 | 9310 | |
861fb55a DJ |
9311 | hti.info = info; |
9312 | hti.output_bfd = output_bfd; | |
9313 | hti.error = FALSE; | |
9314 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
9315 | mips_elf_check_symbols, &hti); | |
9316 | if (hti.error) | |
9317 | return FALSE; | |
f4416af6 | 9318 | |
33bb52fb RS |
9319 | return TRUE; |
9320 | } | |
9321 | ||
9322 | /* If the link uses a GOT, lay it out and work out its size. */ | |
9323 | ||
9324 | static bfd_boolean | |
9325 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
9326 | { | |
9327 | bfd *dynobj; | |
9328 | asection *s; | |
9329 | struct mips_got_info *g; | |
33bb52fb RS |
9330 | bfd_size_type loadable_size = 0; |
9331 | bfd_size_type page_gotno; | |
d7206569 | 9332 | bfd *ibfd; |
ab361d49 | 9333 | struct mips_elf_traverse_got_arg tga; |
33bb52fb RS |
9334 | struct mips_elf_link_hash_table *htab; |
9335 | ||
9336 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9337 | BFD_ASSERT (htab != NULL); |
9338 | ||
ce558b89 | 9339 | s = htab->root.sgot; |
f4416af6 | 9340 | if (s == NULL) |
b34976b6 | 9341 | return TRUE; |
b49e97c9 | 9342 | |
33bb52fb | 9343 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
9344 | g = htab->got_info; |
9345 | ||
861fb55a DJ |
9346 | /* Allocate room for the reserved entries. VxWorks always reserves |
9347 | 3 entries; other objects only reserve 2 entries. */ | |
cb22ccf4 | 9348 | BFD_ASSERT (g->assigned_low_gotno == 0); |
861fb55a DJ |
9349 | if (htab->is_vxworks) |
9350 | htab->reserved_gotno = 3; | |
9351 | else | |
9352 | htab->reserved_gotno = 2; | |
9353 | g->local_gotno += htab->reserved_gotno; | |
cb22ccf4 | 9354 | g->assigned_low_gotno = htab->reserved_gotno; |
861fb55a | 9355 | |
6c42ddb9 RS |
9356 | /* Decide which symbols need to go in the global part of the GOT and |
9357 | count the number of reloc-only GOT symbols. */ | |
020d7251 | 9358 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 9359 | |
13db6b44 RS |
9360 | if (!mips_elf_resolve_final_got_entries (info, g)) |
9361 | return FALSE; | |
9362 | ||
33bb52fb RS |
9363 | /* Calculate the total loadable size of the output. That |
9364 | will give us the maximum number of GOT_PAGE entries | |
9365 | required. */ | |
c72f2fb2 | 9366 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
33bb52fb RS |
9367 | { |
9368 | asection *subsection; | |
5108fc1b | 9369 | |
d7206569 | 9370 | for (subsection = ibfd->sections; |
33bb52fb RS |
9371 | subsection; |
9372 | subsection = subsection->next) | |
9373 | { | |
9374 | if ((subsection->flags & SEC_ALLOC) == 0) | |
9375 | continue; | |
9376 | loadable_size += ((subsection->size + 0xf) | |
9377 | &~ (bfd_size_type) 0xf); | |
9378 | } | |
9379 | } | |
f4416af6 | 9380 | |
0a44bf69 | 9381 | if (htab->is_vxworks) |
738e5348 | 9382 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
9383 | relocations against local symbols evaluate to "G", and the EABI does |
9384 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 9385 | page_gotno = 0; |
0a44bf69 RS |
9386 | else |
9387 | /* Assume there are two loadable segments consisting of contiguous | |
9388 | sections. Is 5 enough? */ | |
c224138d RS |
9389 | page_gotno = (loadable_size >> 16) + 5; |
9390 | ||
13db6b44 | 9391 | /* Choose the smaller of the two page estimates; both are intended to be |
c224138d RS |
9392 | conservative. */ |
9393 | if (page_gotno > g->page_gotno) | |
9394 | page_gotno = g->page_gotno; | |
f4416af6 | 9395 | |
c224138d | 9396 | g->local_gotno += page_gotno; |
cb22ccf4 | 9397 | g->assigned_high_gotno = g->local_gotno - 1; |
ab361d49 | 9398 | |
ab361d49 RS |
9399 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9400 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
0f20cc35 DJ |
9401 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9402 | ||
0a44bf69 RS |
9403 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
9404 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
9405 | dynamic loader. */ | |
57093f5e | 9406 | if (!htab->is_vxworks && s->size > MIPS_ELF_GOT_MAX_SIZE (info)) |
0f20cc35 | 9407 | { |
a8028dd0 | 9408 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
9409 | return FALSE; |
9410 | } | |
9411 | else | |
9412 | { | |
d7206569 RS |
9413 | /* Record that all bfds use G. This also has the effect of freeing |
9414 | the per-bfd GOTs, which we no longer need. */ | |
c72f2fb2 | 9415 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
d7206569 RS |
9416 | if (mips_elf_bfd_got (ibfd, FALSE)) |
9417 | mips_elf_replace_bfd_got (ibfd, g); | |
9418 | mips_elf_replace_bfd_got (output_bfd, g); | |
9419 | ||
33bb52fb | 9420 | /* Set up TLS entries. */ |
0f20cc35 | 9421 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
72e7511a RS |
9422 | tga.info = info; |
9423 | tga.g = g; | |
9424 | tga.value = MIPS_ELF_GOT_SIZE (output_bfd); | |
9425 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
9426 | if (!tga.g) | |
9427 | return FALSE; | |
1fd20d70 RS |
9428 | BFD_ASSERT (g->tls_assigned_gotno |
9429 | == g->global_gotno + g->local_gotno + g->tls_gotno); | |
33bb52fb | 9430 | |
57093f5e | 9431 | /* Each VxWorks GOT entry needs an explicit relocation. */ |
0e1862bb | 9432 | if (htab->is_vxworks && bfd_link_pic (info)) |
57093f5e RS |
9433 | g->relocs += g->global_gotno + g->local_gotno - htab->reserved_gotno; |
9434 | ||
33bb52fb | 9435 | /* Allocate room for the TLS relocations. */ |
ab361d49 RS |
9436 | if (g->relocs) |
9437 | mips_elf_allocate_dynamic_relocations (dynobj, info, g->relocs); | |
0f20cc35 | 9438 | } |
b49e97c9 | 9439 | |
b34976b6 | 9440 | return TRUE; |
b49e97c9 TS |
9441 | } |
9442 | ||
33bb52fb RS |
9443 | /* Estimate the size of the .MIPS.stubs section. */ |
9444 | ||
9445 | static void | |
9446 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
9447 | { | |
9448 | struct mips_elf_link_hash_table *htab; | |
9449 | bfd_size_type dynsymcount; | |
9450 | ||
9451 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9452 | BFD_ASSERT (htab != NULL); |
9453 | ||
33bb52fb RS |
9454 | if (htab->lazy_stub_count == 0) |
9455 | return; | |
9456 | ||
9457 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
9458 | section, so add a dummy entry to the end. */ | |
9459 | htab->lazy_stub_count++; | |
9460 | ||
9461 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
9462 | At this point, dynsymcount does not account for section symbols | |
9463 | and count_section_dynsyms may overestimate the number that will | |
9464 | be needed. */ | |
9465 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
9466 | + count_section_dynsyms (output_bfd, info)); | |
9467 | ||
1bbce132 MR |
9468 | /* Determine the size of one stub entry. There's no disadvantage |
9469 | from using microMIPS code here, so for the sake of pure-microMIPS | |
9470 | binaries we prefer it whenever there's any microMIPS code in | |
9471 | output produced at all. This has a benefit of stubs being | |
833794fc MR |
9472 | shorter by 4 bytes each too, unless in the insn32 mode. */ |
9473 | if (!MICROMIPS_P (output_bfd)) | |
1bbce132 MR |
9474 | htab->function_stub_size = (dynsymcount > 0x10000 |
9475 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
9476 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
833794fc MR |
9477 | else if (htab->insn32) |
9478 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9479 | ? MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE | |
9480 | : MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE); | |
9481 | else | |
9482 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9483 | ? MICROMIPS_FUNCTION_STUB_BIG_SIZE | |
9484 | : MICROMIPS_FUNCTION_STUB_NORMAL_SIZE); | |
33bb52fb RS |
9485 | |
9486 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
9487 | } | |
9488 | ||
1bbce132 MR |
9489 | /* A mips_elf_link_hash_traverse callback for which DATA points to a |
9490 | mips_htab_traverse_info. If H needs a traditional MIPS lazy-binding | |
9491 | stub, allocate an entry in the stubs section. */ | |
33bb52fb RS |
9492 | |
9493 | static bfd_boolean | |
af924177 | 9494 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 9495 | { |
1bbce132 | 9496 | struct mips_htab_traverse_info *hti = data; |
33bb52fb | 9497 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9498 | struct bfd_link_info *info; |
9499 | bfd *output_bfd; | |
9500 | ||
9501 | info = hti->info; | |
9502 | output_bfd = hti->output_bfd; | |
9503 | htab = mips_elf_hash_table (info); | |
9504 | BFD_ASSERT (htab != NULL); | |
33bb52fb | 9505 | |
33bb52fb RS |
9506 | if (h->needs_lazy_stub) |
9507 | { | |
1bbce132 MR |
9508 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); |
9509 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9510 | bfd_vma isa_bit = micromips_p; | |
9511 | ||
9512 | BFD_ASSERT (htab->root.dynobj != NULL); | |
9513 | if (h->root.plt.plist == NULL) | |
9514 | h->root.plt.plist = mips_elf_make_plt_record (htab->sstubs->owner); | |
9515 | if (h->root.plt.plist == NULL) | |
9516 | { | |
9517 | hti->error = TRUE; | |
9518 | return FALSE; | |
9519 | } | |
33bb52fb | 9520 | h->root.root.u.def.section = htab->sstubs; |
1bbce132 MR |
9521 | h->root.root.u.def.value = htab->sstubs->size + isa_bit; |
9522 | h->root.plt.plist->stub_offset = htab->sstubs->size; | |
9523 | h->root.other = other; | |
33bb52fb RS |
9524 | htab->sstubs->size += htab->function_stub_size; |
9525 | } | |
9526 | return TRUE; | |
9527 | } | |
9528 | ||
9529 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
9530 | Set the final size of the .MIPS.stub section. */ | |
9531 | ||
1bbce132 | 9532 | static bfd_boolean |
33bb52fb RS |
9533 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) |
9534 | { | |
1bbce132 MR |
9535 | bfd *output_bfd = info->output_bfd; |
9536 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); | |
9537 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9538 | bfd_vma isa_bit = micromips_p; | |
33bb52fb | 9539 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9540 | struct mips_htab_traverse_info hti; |
9541 | struct elf_link_hash_entry *h; | |
9542 | bfd *dynobj; | |
33bb52fb RS |
9543 | |
9544 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9545 | BFD_ASSERT (htab != NULL); |
9546 | ||
33bb52fb | 9547 | if (htab->lazy_stub_count == 0) |
1bbce132 | 9548 | return TRUE; |
33bb52fb RS |
9549 | |
9550 | htab->sstubs->size = 0; | |
1bbce132 MR |
9551 | hti.info = info; |
9552 | hti.output_bfd = output_bfd; | |
9553 | hti.error = FALSE; | |
9554 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, &hti); | |
9555 | if (hti.error) | |
9556 | return FALSE; | |
33bb52fb RS |
9557 | htab->sstubs->size += htab->function_stub_size; |
9558 | BFD_ASSERT (htab->sstubs->size | |
9559 | == htab->lazy_stub_count * htab->function_stub_size); | |
1bbce132 MR |
9560 | |
9561 | dynobj = elf_hash_table (info)->dynobj; | |
9562 | BFD_ASSERT (dynobj != NULL); | |
9563 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->sstubs, "_MIPS_STUBS_"); | |
9564 | if (h == NULL) | |
9565 | return FALSE; | |
9566 | h->root.u.def.value = isa_bit; | |
9567 | h->other = other; | |
9568 | h->type = STT_FUNC; | |
9569 | ||
9570 | return TRUE; | |
9571 | } | |
9572 | ||
9573 | /* A mips_elf_link_hash_traverse callback for which DATA points to a | |
9574 | bfd_link_info. If H uses the address of a PLT entry as the value | |
9575 | of the symbol, then set the entry in the symbol table now. Prefer | |
9576 | a standard MIPS PLT entry. */ | |
9577 | ||
9578 | static bfd_boolean | |
9579 | mips_elf_set_plt_sym_value (struct mips_elf_link_hash_entry *h, void *data) | |
9580 | { | |
9581 | struct bfd_link_info *info = data; | |
9582 | bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd); | |
9583 | struct mips_elf_link_hash_table *htab; | |
9584 | unsigned int other; | |
9585 | bfd_vma isa_bit; | |
9586 | bfd_vma val; | |
9587 | ||
9588 | htab = mips_elf_hash_table (info); | |
9589 | BFD_ASSERT (htab != NULL); | |
9590 | ||
9591 | if (h->use_plt_entry) | |
9592 | { | |
9593 | BFD_ASSERT (h->root.plt.plist != NULL); | |
9594 | BFD_ASSERT (h->root.plt.plist->mips_offset != MINUS_ONE | |
9595 | || h->root.plt.plist->comp_offset != MINUS_ONE); | |
9596 | ||
9597 | val = htab->plt_header_size; | |
9598 | if (h->root.plt.plist->mips_offset != MINUS_ONE) | |
9599 | { | |
9600 | isa_bit = 0; | |
9601 | val += h->root.plt.plist->mips_offset; | |
9602 | other = 0; | |
9603 | } | |
9604 | else | |
9605 | { | |
9606 | isa_bit = 1; | |
9607 | val += htab->plt_mips_offset + h->root.plt.plist->comp_offset; | |
9608 | other = micromips_p ? STO_MICROMIPS : STO_MIPS16; | |
9609 | } | |
9610 | val += isa_bit; | |
9611 | /* For VxWorks, point at the PLT load stub rather than the lazy | |
07d6d2b8 AM |
9612 | resolution stub; this stub will become the canonical function |
9613 | address. */ | |
1bbce132 MR |
9614 | if (htab->is_vxworks) |
9615 | val += 8; | |
9616 | ||
ce558b89 | 9617 | h->root.root.u.def.section = htab->root.splt; |
1bbce132 MR |
9618 | h->root.root.u.def.value = val; |
9619 | h->root.other = other; | |
9620 | } | |
9621 | ||
9622 | return TRUE; | |
33bb52fb RS |
9623 | } |
9624 | ||
b49e97c9 TS |
9625 | /* Set the sizes of the dynamic sections. */ |
9626 | ||
b34976b6 | 9627 | bfd_boolean |
9719ad41 RS |
9628 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
9629 | struct bfd_link_info *info) | |
b49e97c9 TS |
9630 | { |
9631 | bfd *dynobj; | |
861fb55a | 9632 | asection *s, *sreldyn; |
b34976b6 | 9633 | bfd_boolean reltext; |
0a44bf69 | 9634 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9635 | |
0a44bf69 | 9636 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9637 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
9638 | dynobj = elf_hash_table (info)->dynobj; |
9639 | BFD_ASSERT (dynobj != NULL); | |
9640 | ||
9641 | if (elf_hash_table (info)->dynamic_sections_created) | |
9642 | { | |
9643 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9644 | if (bfd_link_executable (info) && !info->nointerp) |
b49e97c9 | 9645 | { |
3d4d4302 | 9646 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 9647 | BFD_ASSERT (s != NULL); |
eea6121a | 9648 | s->size |
b49e97c9 TS |
9649 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
9650 | s->contents | |
9651 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
9652 | } | |
861fb55a | 9653 | |
1bbce132 | 9654 | /* Figure out the size of the PLT header if we know that we |
07d6d2b8 AM |
9655 | are using it. For the sake of cache alignment always use |
9656 | a standard header whenever any standard entries are present | |
9657 | even if microMIPS entries are present as well. This also | |
9658 | lets the microMIPS header rely on the value of $v0 only set | |
9659 | by microMIPS entries, for a small size reduction. | |
1bbce132 | 9660 | |
07d6d2b8 AM |
9661 | Set symbol table entry values for symbols that use the |
9662 | address of their PLT entry now that we can calculate it. | |
1bbce132 | 9663 | |
07d6d2b8 AM |
9664 | Also create the _PROCEDURE_LINKAGE_TABLE_ symbol if we |
9665 | haven't already in _bfd_elf_create_dynamic_sections. */ | |
ce558b89 | 9666 | if (htab->root.splt && htab->plt_mips_offset + htab->plt_comp_offset != 0) |
861fb55a | 9667 | { |
1bbce132 MR |
9668 | bfd_boolean micromips_p = (MICROMIPS_P (output_bfd) |
9669 | && !htab->plt_mips_offset); | |
9670 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
9671 | bfd_vma isa_bit = micromips_p; | |
861fb55a | 9672 | struct elf_link_hash_entry *h; |
1bbce132 | 9673 | bfd_vma size; |
861fb55a DJ |
9674 | |
9675 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
ce558b89 AM |
9676 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
9677 | BFD_ASSERT (htab->root.splt->size == 0); | |
1bbce132 | 9678 | |
0e1862bb | 9679 | if (htab->is_vxworks && bfd_link_pic (info)) |
1bbce132 MR |
9680 | size = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); |
9681 | else if (htab->is_vxworks) | |
9682 | size = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
9683 | else if (ABI_64_P (output_bfd)) | |
9684 | size = 4 * ARRAY_SIZE (mips_n64_exec_plt0_entry); | |
9685 | else if (ABI_N32_P (output_bfd)) | |
9686 | size = 4 * ARRAY_SIZE (mips_n32_exec_plt0_entry); | |
9687 | else if (!micromips_p) | |
9688 | size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
833794fc MR |
9689 | else if (htab->insn32) |
9690 | size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
1bbce132 MR |
9691 | else |
9692 | size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
861fb55a | 9693 | |
1bbce132 MR |
9694 | htab->plt_header_is_comp = micromips_p; |
9695 | htab->plt_header_size = size; | |
ce558b89 AM |
9696 | htab->root.splt->size = (size |
9697 | + htab->plt_mips_offset | |
9698 | + htab->plt_comp_offset); | |
9699 | htab->root.sgotplt->size = (htab->plt_got_index | |
9700 | * MIPS_ELF_GOT_SIZE (dynobj)); | |
1bbce132 MR |
9701 | |
9702 | mips_elf_link_hash_traverse (htab, mips_elf_set_plt_sym_value, info); | |
9703 | ||
9704 | if (htab->root.hplt == NULL) | |
9705 | { | |
ce558b89 | 9706 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->root.splt, |
1bbce132 MR |
9707 | "_PROCEDURE_LINKAGE_TABLE_"); |
9708 | htab->root.hplt = h; | |
9709 | if (h == NULL) | |
9710 | return FALSE; | |
9711 | } | |
9712 | ||
9713 | h = htab->root.hplt; | |
9714 | h->root.u.def.value = isa_bit; | |
9715 | h->other = other; | |
861fb55a DJ |
9716 | h->type = STT_FUNC; |
9717 | } | |
9718 | } | |
4e41d0d7 | 9719 | |
9a59ad6b | 9720 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 9721 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 9722 | |
33bb52fb RS |
9723 | mips_elf_estimate_stub_size (output_bfd, info); |
9724 | ||
9725 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
9726 | return FALSE; | |
9727 | ||
9728 | mips_elf_lay_out_lazy_stubs (info); | |
9729 | ||
b49e97c9 TS |
9730 | /* The check_relocs and adjust_dynamic_symbol entry points have |
9731 | determined the sizes of the various dynamic sections. Allocate | |
9732 | memory for them. */ | |
b34976b6 | 9733 | reltext = FALSE; |
b49e97c9 TS |
9734 | for (s = dynobj->sections; s != NULL; s = s->next) |
9735 | { | |
9736 | const char *name; | |
b49e97c9 TS |
9737 | |
9738 | /* It's OK to base decisions on the section name, because none | |
9739 | of the dynobj section names depend upon the input files. */ | |
9740 | name = bfd_get_section_name (dynobj, s); | |
9741 | ||
9742 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9743 | continue; | |
9744 | ||
0112cd26 | 9745 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 9746 | { |
c456f082 | 9747 | if (s->size != 0) |
b49e97c9 TS |
9748 | { |
9749 | const char *outname; | |
9750 | asection *target; | |
9751 | ||
9752 | /* If this relocation section applies to a read only | |
07d6d2b8 AM |
9753 | section, then we probably need a DT_TEXTREL entry. |
9754 | If the relocation section is .rel(a).dyn, we always | |
9755 | assert a DT_TEXTREL entry rather than testing whether | |
9756 | there exists a relocation to a read only section or | |
9757 | not. */ | |
b49e97c9 TS |
9758 | outname = bfd_get_section_name (output_bfd, |
9759 | s->output_section); | |
9760 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
9761 | if ((target != NULL | |
9762 | && (target->flags & SEC_READONLY) != 0 | |
9763 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 9764 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 9765 | reltext = TRUE; |
b49e97c9 TS |
9766 | |
9767 | /* We use the reloc_count field as a counter if we need | |
9768 | to copy relocs into the output file. */ | |
0a44bf69 | 9769 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 9770 | s->reloc_count = 0; |
f4416af6 AO |
9771 | |
9772 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
9773 | sort relocations, but in a different way than we do, | |
9774 | and before we're done creating relocations. Also, it | |
9775 | will move them around between input sections' | |
9776 | relocation's contents, so our sorting would be | |
9777 | broken, so don't let it run. */ | |
9778 | info->combreloc = 0; | |
b49e97c9 TS |
9779 | } |
9780 | } | |
0e1862bb | 9781 | else if (bfd_link_executable (info) |
b49e97c9 | 9782 | && ! mips_elf_hash_table (info)->use_rld_obj_head |
0112cd26 | 9783 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 9784 | { |
5108fc1b | 9785 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 9786 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 9787 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
9788 | } |
9789 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 9790 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 9791 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
ce558b89 | 9792 | else if (s == htab->root.splt) |
861fb55a DJ |
9793 | { |
9794 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
9795 | room for an extra nop to fill the delay slot. This is |
9796 | for CPUs without load interlocking. */ | |
9797 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
9798 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
9799 | s->size += 4; |
9800 | } | |
0112cd26 | 9801 | else if (! CONST_STRNEQ (name, ".init") |
ce558b89 AM |
9802 | && s != htab->root.sgot |
9803 | && s != htab->root.sgotplt | |
861fb55a | 9804 | && s != htab->sstubs |
5474d94f AM |
9805 | && s != htab->root.sdynbss |
9806 | && s != htab->root.sdynrelro) | |
b49e97c9 TS |
9807 | { |
9808 | /* It's not one of our sections, so don't allocate space. */ | |
9809 | continue; | |
9810 | } | |
9811 | ||
c456f082 | 9812 | if (s->size == 0) |
b49e97c9 | 9813 | { |
8423293d | 9814 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
9815 | continue; |
9816 | } | |
9817 | ||
c456f082 AM |
9818 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
9819 | continue; | |
9820 | ||
b49e97c9 | 9821 | /* Allocate memory for the section contents. */ |
eea6121a | 9822 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 9823 | if (s->contents == NULL) |
b49e97c9 TS |
9824 | { |
9825 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 9826 | return FALSE; |
b49e97c9 TS |
9827 | } |
9828 | } | |
9829 | ||
9830 | if (elf_hash_table (info)->dynamic_sections_created) | |
9831 | { | |
9832 | /* Add some entries to the .dynamic section. We fill in the | |
9833 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
9834 | must add the entries now so that we get the correct size for | |
5750dcec | 9835 | the .dynamic section. */ |
af5978fb RS |
9836 | |
9837 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 9838 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
9839 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
9840 | may only look at the first one they see. */ | |
0e1862bb | 9841 | if (!bfd_link_pic (info) |
af5978fb RS |
9842 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) |
9843 | return FALSE; | |
b49e97c9 | 9844 | |
0e1862bb | 9845 | if (bfd_link_executable (info) |
a5499fa4 MF |
9846 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP_REL, 0)) |
9847 | return FALSE; | |
9848 | ||
5750dcec DJ |
9849 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
9850 | used by the debugger. */ | |
0e1862bb | 9851 | if (bfd_link_executable (info) |
5750dcec DJ |
9852 | && !SGI_COMPAT (output_bfd) |
9853 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9854 | return FALSE; | |
9855 | ||
0a44bf69 | 9856 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
9857 | info->flags |= DF_TEXTREL; |
9858 | ||
9859 | if ((info->flags & DF_TEXTREL) != 0) | |
9860 | { | |
9861 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 9862 | return FALSE; |
943284cc DJ |
9863 | |
9864 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
9865 | write out an actual text relocation; we may not, because | |
9866 | at this point we do not know whether e.g. any .eh_frame | |
9867 | absolute relocations have been converted to PC-relative. */ | |
9868 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
9869 | } |
9870 | ||
9871 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 9872 | return FALSE; |
b49e97c9 | 9873 | |
861fb55a | 9874 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 9875 | if (htab->is_vxworks) |
b49e97c9 | 9876 | { |
0a44bf69 RS |
9877 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
9878 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 9879 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9880 | { |
9881 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
9882 | return FALSE; | |
b49e97c9 | 9883 | |
0a44bf69 RS |
9884 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
9885 | return FALSE; | |
b49e97c9 | 9886 | |
0a44bf69 RS |
9887 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
9888 | return FALSE; | |
9889 | } | |
b49e97c9 | 9890 | } |
0a44bf69 RS |
9891 | else |
9892 | { | |
861fb55a | 9893 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9894 | { |
9895 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
9896 | return FALSE; | |
b49e97c9 | 9897 | |
0a44bf69 RS |
9898 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
9899 | return FALSE; | |
b49e97c9 | 9900 | |
0a44bf69 RS |
9901 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
9902 | return FALSE; | |
9903 | } | |
b49e97c9 | 9904 | |
0a44bf69 RS |
9905 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
9906 | return FALSE; | |
b49e97c9 | 9907 | |
0a44bf69 RS |
9908 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
9909 | return FALSE; | |
b49e97c9 | 9910 | |
0a44bf69 RS |
9911 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
9912 | return FALSE; | |
b49e97c9 | 9913 | |
0a44bf69 RS |
9914 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
9915 | return FALSE; | |
b49e97c9 | 9916 | |
0a44bf69 RS |
9917 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
9918 | return FALSE; | |
b49e97c9 | 9919 | |
0a44bf69 RS |
9920 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
9921 | return FALSE; | |
b49e97c9 | 9922 | |
0a44bf69 RS |
9923 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
9924 | return FALSE; | |
9925 | ||
9926 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
9927 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
9928 | return FALSE; | |
9929 | ||
9930 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
9931 | && (bfd_get_section_by_name | |
af0edeb8 | 9932 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 RS |
9933 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
9934 | return FALSE; | |
9935 | } | |
ce558b89 | 9936 | if (htab->root.splt->size > 0) |
861fb55a DJ |
9937 | { |
9938 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
9939 | return FALSE; | |
9940 | ||
9941 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
9942 | return FALSE; | |
9943 | ||
9944 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
9945 | return FALSE; | |
9946 | ||
9947 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
9948 | return FALSE; | |
9949 | } | |
7a2b07ff NS |
9950 | if (htab->is_vxworks |
9951 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
9952 | return FALSE; | |
b49e97c9 TS |
9953 | } |
9954 | ||
b34976b6 | 9955 | return TRUE; |
b49e97c9 TS |
9956 | } |
9957 | \f | |
81d43bff RS |
9958 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
9959 | Adjust its R_ADDEND field so that it is correct for the output file. | |
9960 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
9961 | and sections respectively; both use symbol indexes. */ | |
9962 | ||
9963 | static void | |
9964 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
9965 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
9966 | asection **local_sections, Elf_Internal_Rela *rel) | |
9967 | { | |
9968 | unsigned int r_type, r_symndx; | |
9969 | Elf_Internal_Sym *sym; | |
9970 | asection *sec; | |
9971 | ||
020d7251 | 9972 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
9973 | { |
9974 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 9975 | if (gprel16_reloc_p (r_type) |
81d43bff | 9976 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 9977 | || literal_reloc_p (r_type)) |
81d43bff RS |
9978 | { |
9979 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
9980 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
9981 | } | |
9982 | ||
9983 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
9984 | sym = local_syms + r_symndx; | |
9985 | ||
9986 | /* Adjust REL's addend to account for section merging. */ | |
0e1862bb | 9987 | if (!bfd_link_relocatable (info)) |
81d43bff RS |
9988 | { |
9989 | sec = local_sections[r_symndx]; | |
9990 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
9991 | } | |
9992 | ||
9993 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
9994 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9995 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
9996 | } | |
9997 | } | |
9998 | ||
545fd46b MR |
9999 | /* Handle relocations against symbols from removed linkonce sections, |
10000 | or sections discarded by a linker script. We use this wrapper around | |
10001 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
10002 | on 64-bit ELF targets. In this case for any relocation handled, which | |
10003 | always be the first in a triplet, the remaining two have to be processed | |
10004 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
10005 | index referred by the first reloc that applies to all the three and the | |
10006 | remaining two never refer to an object symbol. And it is the final | |
10007 | relocation (the last non-null one) that determines the output field of | |
10008 | the whole relocation so retrieve the corresponding howto structure for | |
10009 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
10010 | ||
10011 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
10012 | and therefore requires to be pasted in a loop. It also defines a block | |
10013 | and does not protect any of its arguments, hence the extra brackets. */ | |
10014 | ||
10015 | static void | |
10016 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
10017 | struct bfd_link_info *info, | |
10018 | bfd *input_bfd, asection *input_section, | |
10019 | Elf_Internal_Rela **rel, | |
10020 | const Elf_Internal_Rela **relend, | |
10021 | bfd_boolean rel_reloc, | |
10022 | reloc_howto_type *howto, | |
10023 | bfd_byte *contents) | |
10024 | { | |
10025 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
10026 | int count = bed->s->int_rels_per_ext_rel; | |
10027 | unsigned int r_type; | |
10028 | int i; | |
10029 | ||
10030 | for (i = count - 1; i > 0; i--) | |
10031 | { | |
10032 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
10033 | if (r_type != R_MIPS_NONE) | |
10034 | { | |
10035 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
10036 | break; | |
10037 | } | |
10038 | } | |
10039 | do | |
10040 | { | |
10041 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
10042 | (*rel), count, (*relend), | |
10043 | howto, i, contents); | |
10044 | } | |
10045 | while (0); | |
10046 | } | |
10047 | ||
b49e97c9 TS |
10048 | /* Relocate a MIPS ELF section. */ |
10049 | ||
b34976b6 | 10050 | bfd_boolean |
9719ad41 RS |
10051 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
10052 | bfd *input_bfd, asection *input_section, | |
10053 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
10054 | Elf_Internal_Sym *local_syms, | |
10055 | asection **local_sections) | |
b49e97c9 TS |
10056 | { |
10057 | Elf_Internal_Rela *rel; | |
10058 | const Elf_Internal_Rela *relend; | |
10059 | bfd_vma addend = 0; | |
b34976b6 | 10060 | bfd_boolean use_saved_addend_p = FALSE; |
b49e97c9 | 10061 | |
056bafd4 | 10062 | relend = relocs + input_section->reloc_count; |
b49e97c9 TS |
10063 | for (rel = relocs; rel < relend; ++rel) |
10064 | { | |
10065 | const char *name; | |
c9adbffe | 10066 | bfd_vma value = 0; |
b49e97c9 | 10067 | reloc_howto_type *howto; |
ad3d9127 | 10068 | bfd_boolean cross_mode_jump_p = FALSE; |
b34976b6 | 10069 | /* TRUE if the relocation is a RELA relocation, rather than a |
07d6d2b8 | 10070 | REL relocation. */ |
b34976b6 | 10071 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 10072 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 10073 | const char *msg; |
ab96bf03 AM |
10074 | unsigned long r_symndx; |
10075 | asection *sec; | |
749b8d9d L |
10076 | Elf_Internal_Shdr *symtab_hdr; |
10077 | struct elf_link_hash_entry *h; | |
d4730f92 | 10078 | bfd_boolean rel_reloc; |
b49e97c9 | 10079 | |
d4730f92 BS |
10080 | rel_reloc = (NEWABI_P (input_bfd) |
10081 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
10082 | relocs, rel)); | |
b49e97c9 | 10083 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 10084 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
10085 | |
10086 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 10087 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 10088 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
10089 | { |
10090 | sec = local_sections[r_symndx]; | |
10091 | h = NULL; | |
10092 | } | |
ab96bf03 AM |
10093 | else |
10094 | { | |
ab96bf03 | 10095 | unsigned long extsymoff; |
ab96bf03 | 10096 | |
ab96bf03 AM |
10097 | extsymoff = 0; |
10098 | if (!elf_bad_symtab (input_bfd)) | |
10099 | extsymoff = symtab_hdr->sh_info; | |
10100 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
10101 | while (h->root.type == bfd_link_hash_indirect | |
10102 | || h->root.type == bfd_link_hash_warning) | |
10103 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10104 | ||
10105 | sec = NULL; | |
10106 | if (h->root.type == bfd_link_hash_defined | |
10107 | || h->root.type == bfd_link_hash_defweak) | |
10108 | sec = h->root.u.def.section; | |
10109 | } | |
10110 | ||
dbaa2011 | 10111 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
10112 | { |
10113 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
10114 | input_section, &rel, &relend, | |
10115 | rel_reloc, howto, contents); | |
10116 | continue; | |
10117 | } | |
ab96bf03 | 10118 | |
4a14403c | 10119 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
10120 | { |
10121 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
10122 | 64-bit code, but make sure all their addresses are in the | |
10123 | lowermost or uppermost 32-bit section of the 64-bit address | |
10124 | space. Thus, when they use an R_MIPS_64 they mean what is | |
10125 | usually meant by R_MIPS_32, with the exception that the | |
10126 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 10127 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
10128 | |
10129 | /* On big-endian systems, we need to lie about the position | |
10130 | of the reloc. */ | |
10131 | if (bfd_big_endian (input_bfd)) | |
10132 | rel->r_offset += 4; | |
10133 | } | |
b49e97c9 TS |
10134 | |
10135 | if (!use_saved_addend_p) | |
10136 | { | |
b49e97c9 TS |
10137 | /* If these relocations were originally of the REL variety, |
10138 | we must pull the addend out of the field that will be | |
10139 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
10140 | RELA relocation. */ |
10141 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
10142 | relocs, rel)) | |
b49e97c9 | 10143 | { |
b34976b6 | 10144 | rela_relocation_p = FALSE; |
c224138d RS |
10145 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
10146 | howto, contents); | |
738e5348 RS |
10147 | if (hi16_reloc_p (r_type) |
10148 | || (got16_reloc_p (r_type) | |
b49e97c9 | 10149 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 10150 | local_sections))) |
b49e97c9 | 10151 | { |
c224138d RS |
10152 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
10153 | contents, &addend)) | |
749b8d9d | 10154 | { |
749b8d9d L |
10155 | if (h) |
10156 | name = h->root.root.string; | |
10157 | else | |
10158 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
10159 | local_syms + r_symndx, | |
10160 | sec); | |
4eca0228 | 10161 | _bfd_error_handler |
695344c0 | 10162 | /* xgettext:c-format */ |
2c1c9679 | 10163 | (_("%pB: can't find matching LO16 reloc against `%s'" |
2dcf00ce | 10164 | " for %s at %#" PRIx64 " in section `%pA'"), |
c08bb8dd | 10165 | input_bfd, name, |
2dcf00ce | 10166 | howto->name, (uint64_t) rel->r_offset, input_section); |
749b8d9d | 10167 | } |
b49e97c9 | 10168 | } |
30ac9238 RS |
10169 | else |
10170 | addend <<= howto->rightshift; | |
b49e97c9 TS |
10171 | } |
10172 | else | |
10173 | addend = rel->r_addend; | |
81d43bff RS |
10174 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
10175 | local_syms, local_sections, rel); | |
b49e97c9 TS |
10176 | } |
10177 | ||
0e1862bb | 10178 | if (bfd_link_relocatable (info)) |
b49e97c9 | 10179 | { |
4a14403c | 10180 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
10181 | && bfd_big_endian (input_bfd)) |
10182 | rel->r_offset -= 4; | |
10183 | ||
81d43bff | 10184 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 10185 | { |
81d43bff | 10186 | addend += rel->r_addend; |
738e5348 | 10187 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
10188 | addend = mips_elf_high (addend); |
10189 | else if (r_type == R_MIPS_HIGHER) | |
10190 | addend = mips_elf_higher (addend); | |
10191 | else if (r_type == R_MIPS_HIGHEST) | |
10192 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
10193 | else |
10194 | addend >>= howto->rightshift; | |
b49e97c9 | 10195 | |
30ac9238 RS |
10196 | /* We use the source mask, rather than the destination |
10197 | mask because the place to which we are writing will be | |
10198 | source of the addend in the final link. */ | |
b49e97c9 TS |
10199 | addend &= howto->src_mask; |
10200 | ||
5a659663 | 10201 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10202 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10203 | ABI. Here, we need to update the addend. It would be | |
10204 | possible to get away with just using the R_MIPS_32 reloc | |
10205 | but for endianness. */ | |
10206 | { | |
10207 | bfd_vma sign_bits; | |
10208 | bfd_vma low_bits; | |
10209 | bfd_vma high_bits; | |
10210 | ||
10211 | if (addend & ((bfd_vma) 1 << 31)) | |
10212 | #ifdef BFD64 | |
10213 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10214 | #else | |
10215 | sign_bits = -1; | |
10216 | #endif | |
10217 | else | |
10218 | sign_bits = 0; | |
10219 | ||
10220 | /* If we don't know that we have a 64-bit type, | |
10221 | do two separate stores. */ | |
10222 | if (bfd_big_endian (input_bfd)) | |
10223 | { | |
10224 | /* Store the sign-bits (which are most significant) | |
10225 | first. */ | |
10226 | low_bits = sign_bits; | |
10227 | high_bits = addend; | |
10228 | } | |
10229 | else | |
10230 | { | |
10231 | low_bits = addend; | |
10232 | high_bits = sign_bits; | |
10233 | } | |
10234 | bfd_put_32 (input_bfd, low_bits, | |
10235 | contents + rel->r_offset); | |
10236 | bfd_put_32 (input_bfd, high_bits, | |
10237 | contents + rel->r_offset + 4); | |
10238 | continue; | |
10239 | } | |
10240 | ||
10241 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
10242 | input_bfd, input_section, | |
b34976b6 AM |
10243 | contents, FALSE)) |
10244 | return FALSE; | |
b49e97c9 TS |
10245 | } |
10246 | ||
10247 | /* Go on to the next relocation. */ | |
10248 | continue; | |
10249 | } | |
10250 | ||
10251 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
10252 | relocations for the same offset. In that case we are | |
10253 | supposed to treat the output of each relocation as the addend | |
10254 | for the next. */ | |
10255 | if (rel + 1 < relend | |
10256 | && rel->r_offset == rel[1].r_offset | |
10257 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 10258 | use_saved_addend_p = TRUE; |
b49e97c9 | 10259 | else |
b34976b6 | 10260 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
10261 | |
10262 | /* Figure out what value we are supposed to relocate. */ | |
10263 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
10264 | input_section, info, rel, | |
10265 | addend, howto, local_syms, | |
10266 | local_sections, &value, | |
38a7df63 | 10267 | &name, &cross_mode_jump_p, |
bce03d3d | 10268 | use_saved_addend_p)) |
b49e97c9 TS |
10269 | { |
10270 | case bfd_reloc_continue: | |
10271 | /* There's nothing to do. */ | |
10272 | continue; | |
10273 | ||
10274 | case bfd_reloc_undefined: | |
10275 | /* mips_elf_calculate_relocation already called the | |
10276 | undefined_symbol callback. There's no real point in | |
10277 | trying to perform the relocation at this point, so we | |
10278 | just skip ahead to the next relocation. */ | |
10279 | continue; | |
10280 | ||
10281 | case bfd_reloc_notsupported: | |
10282 | msg = _("internal error: unsupported relocation error"); | |
10283 | info->callbacks->warning | |
10284 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 10285 | return FALSE; |
b49e97c9 TS |
10286 | |
10287 | case bfd_reloc_overflow: | |
10288 | if (use_saved_addend_p) | |
10289 | /* Ignore overflow until we reach the last relocation for | |
10290 | a given location. */ | |
10291 | ; | |
10292 | else | |
10293 | { | |
0e53d9da AN |
10294 | struct mips_elf_link_hash_table *htab; |
10295 | ||
10296 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10297 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10298 | BFD_ASSERT (name != NULL); |
0e53d9da | 10299 | if (!htab->small_data_overflow_reported |
9684f078 | 10300 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 10301 | || literal_reloc_p (howto->type))) |
0e53d9da | 10302 | { |
91d6fa6a NC |
10303 | msg = _("small-data section exceeds 64KB;" |
10304 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
10305 | |
10306 | htab->small_data_overflow_reported = TRUE; | |
10307 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
10308 | } | |
1a72702b AM |
10309 | (*info->callbacks->reloc_overflow) |
10310 | (info, NULL, name, howto->name, (bfd_vma) 0, | |
10311 | input_bfd, input_section, rel->r_offset); | |
b49e97c9 TS |
10312 | } |
10313 | break; | |
10314 | ||
10315 | case bfd_reloc_ok: | |
10316 | break; | |
10317 | ||
df58fc94 | 10318 | case bfd_reloc_outofrange: |
7db9a74e | 10319 | msg = NULL; |
df58fc94 | 10320 | if (jal_reloc_p (howto->type)) |
9d862524 | 10321 | msg = (cross_mode_jump_p |
2c1c9679 | 10322 | ? _("cannot convert a jump to JALX " |
9d862524 MR |
10323 | "for a non-word-aligned address") |
10324 | : (howto->type == R_MIPS16_26 | |
2c1c9679 AM |
10325 | ? _("jump to a non-word-aligned address") |
10326 | : _("jump to a non-instruction-aligned address"))); | |
99aefae6 | 10327 | else if (b_reloc_p (howto->type)) |
a6ebf616 | 10328 | msg = (cross_mode_jump_p |
2c1c9679 | 10329 | ? _("cannot convert a branch to JALX " |
a6ebf616 | 10330 | "for a non-word-aligned address") |
2c1c9679 | 10331 | : _("branch to a non-instruction-aligned address")); |
7db9a74e MR |
10332 | else if (aligned_pcrel_reloc_p (howto->type)) |
10333 | msg = _("PC-relative load from unaligned address"); | |
10334 | if (msg) | |
df58fc94 | 10335 | { |
de341542 | 10336 | info->callbacks->einfo |
ed53407e MR |
10337 | ("%X%H: %s\n", input_bfd, input_section, rel->r_offset, msg); |
10338 | break; | |
7361da2c | 10339 | } |
df58fc94 RS |
10340 | /* Fall through. */ |
10341 | ||
b49e97c9 TS |
10342 | default: |
10343 | abort (); | |
10344 | break; | |
10345 | } | |
10346 | ||
10347 | /* If we've got another relocation for the address, keep going | |
10348 | until we reach the last one. */ | |
10349 | if (use_saved_addend_p) | |
10350 | { | |
10351 | addend = value; | |
10352 | continue; | |
10353 | } | |
10354 | ||
4a14403c | 10355 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10356 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10357 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
10358 | that calculated the right value. Now, however, we | |
10359 | sign-extend the 32-bit result to 64-bits, and store it as a | |
10360 | 64-bit value. We are especially generous here in that we | |
10361 | go to extreme lengths to support this usage on systems with | |
10362 | only a 32-bit VMA. */ | |
10363 | { | |
10364 | bfd_vma sign_bits; | |
10365 | bfd_vma low_bits; | |
10366 | bfd_vma high_bits; | |
10367 | ||
10368 | if (value & ((bfd_vma) 1 << 31)) | |
10369 | #ifdef BFD64 | |
10370 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10371 | #else | |
10372 | sign_bits = -1; | |
10373 | #endif | |
10374 | else | |
10375 | sign_bits = 0; | |
10376 | ||
10377 | /* If we don't know that we have a 64-bit type, | |
10378 | do two separate stores. */ | |
10379 | if (bfd_big_endian (input_bfd)) | |
10380 | { | |
10381 | /* Undo what we did above. */ | |
10382 | rel->r_offset -= 4; | |
10383 | /* Store the sign-bits (which are most significant) | |
10384 | first. */ | |
10385 | low_bits = sign_bits; | |
10386 | high_bits = value; | |
10387 | } | |
10388 | else | |
10389 | { | |
10390 | low_bits = value; | |
10391 | high_bits = sign_bits; | |
10392 | } | |
10393 | bfd_put_32 (input_bfd, low_bits, | |
10394 | contents + rel->r_offset); | |
10395 | bfd_put_32 (input_bfd, high_bits, | |
10396 | contents + rel->r_offset + 4); | |
10397 | continue; | |
10398 | } | |
10399 | ||
10400 | /* Actually perform the relocation. */ | |
10401 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
10402 | input_bfd, input_section, | |
38a7df63 | 10403 | contents, cross_mode_jump_p)) |
b34976b6 | 10404 | return FALSE; |
b49e97c9 TS |
10405 | } |
10406 | ||
b34976b6 | 10407 | return TRUE; |
b49e97c9 TS |
10408 | } |
10409 | \f | |
861fb55a DJ |
10410 | /* A function that iterates over each entry in la25_stubs and fills |
10411 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
10412 | ||
10413 | static int | |
10414 | mips_elf_create_la25_stub (void **slot, void *data) | |
10415 | { | |
10416 | struct mips_htab_traverse_info *hti; | |
10417 | struct mips_elf_link_hash_table *htab; | |
10418 | struct mips_elf_la25_stub *stub; | |
10419 | asection *s; | |
10420 | bfd_byte *loc; | |
10421 | bfd_vma offset, target, target_high, target_low; | |
10422 | ||
10423 | stub = (struct mips_elf_la25_stub *) *slot; | |
10424 | hti = (struct mips_htab_traverse_info *) data; | |
10425 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 10426 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
10427 | |
10428 | /* Create the section contents, if we haven't already. */ | |
10429 | s = stub->stub_section; | |
10430 | loc = s->contents; | |
10431 | if (loc == NULL) | |
10432 | { | |
10433 | loc = bfd_malloc (s->size); | |
10434 | if (loc == NULL) | |
10435 | { | |
10436 | hti->error = TRUE; | |
10437 | return FALSE; | |
10438 | } | |
10439 | s->contents = loc; | |
10440 | } | |
10441 | ||
10442 | /* Work out where in the section this stub should go. */ | |
10443 | offset = stub->offset; | |
10444 | ||
10445 | /* Work out the target address. */ | |
8f0c309a CLT |
10446 | target = mips_elf_get_la25_target (stub, &s); |
10447 | target += s->output_section->vma + s->output_offset; | |
10448 | ||
861fb55a DJ |
10449 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
10450 | target_low = (target & 0xffff); | |
10451 | ||
10452 | if (stub->stub_section != htab->strampoline) | |
10453 | { | |
df58fc94 | 10454 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
10455 | of the section and write the two instructions at the end. */ |
10456 | memset (loc, 0, offset); | |
10457 | loc += offset; | |
df58fc94 RS |
10458 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10459 | { | |
d21911ea MR |
10460 | bfd_put_micromips_32 (hti->output_bfd, |
10461 | LA25_LUI_MICROMIPS (target_high), | |
10462 | loc); | |
10463 | bfd_put_micromips_32 (hti->output_bfd, | |
10464 | LA25_ADDIU_MICROMIPS (target_low), | |
10465 | loc + 4); | |
df58fc94 RS |
10466 | } |
10467 | else | |
10468 | { | |
10469 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
10470 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
10471 | } | |
861fb55a DJ |
10472 | } |
10473 | else | |
10474 | { | |
10475 | /* This is trampoline. */ | |
10476 | loc += offset; | |
df58fc94 RS |
10477 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10478 | { | |
d21911ea MR |
10479 | bfd_put_micromips_32 (hti->output_bfd, |
10480 | LA25_LUI_MICROMIPS (target_high), loc); | |
10481 | bfd_put_micromips_32 (hti->output_bfd, | |
10482 | LA25_J_MICROMIPS (target), loc + 4); | |
10483 | bfd_put_micromips_32 (hti->output_bfd, | |
10484 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
10485 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
10486 | } | |
10487 | else | |
10488 | { | |
10489 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
10490 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
10491 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
10492 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
10493 | } | |
861fb55a DJ |
10494 | } |
10495 | return TRUE; | |
10496 | } | |
10497 | ||
b49e97c9 TS |
10498 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
10499 | adjust it appropriately now. */ | |
10500 | ||
10501 | static void | |
9719ad41 RS |
10502 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
10503 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10504 | { |
10505 | /* The linker script takes care of providing names and values for | |
10506 | these, but we must place them into the right sections. */ | |
10507 | static const char* const text_section_symbols[] = { | |
10508 | "_ftext", | |
10509 | "_etext", | |
10510 | "__dso_displacement", | |
10511 | "__elf_header", | |
10512 | "__program_header_table", | |
10513 | NULL | |
10514 | }; | |
10515 | ||
10516 | static const char* const data_section_symbols[] = { | |
10517 | "_fdata", | |
10518 | "_edata", | |
10519 | "_end", | |
10520 | "_fbss", | |
10521 | NULL | |
10522 | }; | |
10523 | ||
10524 | const char* const *p; | |
10525 | int i; | |
10526 | ||
10527 | for (i = 0; i < 2; ++i) | |
10528 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
10529 | *p; | |
10530 | ++p) | |
10531 | if (strcmp (*p, name) == 0) | |
10532 | { | |
10533 | /* All of these symbols are given type STT_SECTION by the | |
10534 | IRIX6 linker. */ | |
10535 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 10536 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
10537 | |
10538 | /* The IRIX linker puts these symbols in special sections. */ | |
10539 | if (i == 0) | |
10540 | sym->st_shndx = SHN_MIPS_TEXT; | |
10541 | else | |
10542 | sym->st_shndx = SHN_MIPS_DATA; | |
10543 | ||
10544 | break; | |
10545 | } | |
10546 | } | |
10547 | ||
10548 | /* Finish up dynamic symbol handling. We set the contents of various | |
10549 | dynamic sections here. */ | |
10550 | ||
b34976b6 | 10551 | bfd_boolean |
9719ad41 RS |
10552 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
10553 | struct bfd_link_info *info, | |
10554 | struct elf_link_hash_entry *h, | |
10555 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10556 | { |
10557 | bfd *dynobj; | |
b49e97c9 | 10558 | asection *sgot; |
f4416af6 | 10559 | struct mips_got_info *g, *gg; |
b49e97c9 | 10560 | const char *name; |
3d6746ca | 10561 | int idx; |
5108fc1b | 10562 | struct mips_elf_link_hash_table *htab; |
738e5348 | 10563 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 10564 | |
5108fc1b | 10565 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 10566 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10567 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 10568 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 10569 | |
861fb55a DJ |
10570 | BFD_ASSERT (!htab->is_vxworks); |
10571 | ||
1bbce132 MR |
10572 | if (h->plt.plist != NULL |
10573 | && (h->plt.plist->mips_offset != MINUS_ONE | |
10574 | || h->plt.plist->comp_offset != MINUS_ONE)) | |
861fb55a DJ |
10575 | { |
10576 | /* We've decided to create a PLT entry for this symbol. */ | |
10577 | bfd_byte *loc; | |
1bbce132 | 10578 | bfd_vma header_address, got_address; |
861fb55a | 10579 | bfd_vma got_address_high, got_address_low, load; |
1bbce132 MR |
10580 | bfd_vma got_index; |
10581 | bfd_vma isa_bit; | |
10582 | ||
10583 | got_index = h->plt.plist->gotplt_index; | |
861fb55a DJ |
10584 | |
10585 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10586 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 10587 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 10588 | BFD_ASSERT (got_index != MINUS_ONE); |
861fb55a DJ |
10589 | BFD_ASSERT (!h->def_regular); |
10590 | ||
10591 | /* Calculate the address of the PLT header. */ | |
1bbce132 | 10592 | isa_bit = htab->plt_header_is_comp; |
ce558b89 AM |
10593 | header_address = (htab->root.splt->output_section->vma |
10594 | + htab->root.splt->output_offset + isa_bit); | |
861fb55a DJ |
10595 | |
10596 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
10597 | got_address = (htab->root.sgotplt->output_section->vma |
10598 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
10599 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); |
10600 | ||
861fb55a DJ |
10601 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; |
10602 | got_address_low = got_address & 0xffff; | |
10603 | ||
789ff5b6 MR |
10604 | /* The PLT sequence is not safe for N64 if .got.plt entry's address |
10605 | cannot be loaded in two instructions. */ | |
10606 | if (ABI_64_P (output_bfd) | |
10607 | && ((got_address + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
10608 | { | |
10609 | _bfd_error_handler | |
10610 | /* xgettext:c-format */ | |
10611 | (_("%pB: `%pA' entry VMA of %#" PRIx64 " outside the 32-bit range " | |
10612 | "supported; consider using `-Ttext-segment=...'"), | |
10613 | output_bfd, | |
10614 | htab->root.sgotplt->output_section, | |
10615 | (int64_t) got_address); | |
10616 | bfd_set_error (bfd_error_no_error); | |
10617 | return FALSE; | |
10618 | } | |
10619 | ||
861fb55a | 10620 | /* Initially point the .got.plt entry at the PLT header. */ |
6a382bce MR |
10621 | loc = (htab->root.sgotplt->contents |
10622 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); | |
861fb55a DJ |
10623 | if (ABI_64_P (output_bfd)) |
10624 | bfd_put_64 (output_bfd, header_address, loc); | |
10625 | else | |
10626 | bfd_put_32 (output_bfd, header_address, loc); | |
10627 | ||
1bbce132 | 10628 | /* Now handle the PLT itself. First the standard entry (the order |
07d6d2b8 | 10629 | does not matter, we just have to pick one). */ |
1bbce132 MR |
10630 | if (h->plt.plist->mips_offset != MINUS_ONE) |
10631 | { | |
10632 | const bfd_vma *plt_entry; | |
10633 | bfd_vma plt_offset; | |
861fb55a | 10634 | |
1bbce132 | 10635 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; |
861fb55a | 10636 | |
ce558b89 | 10637 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
6d30f5b2 | 10638 | |
1bbce132 | 10639 | /* Find out where the .plt entry should go. */ |
ce558b89 | 10640 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
10641 | |
10642 | /* Pick the load opcode. */ | |
10643 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
10644 | ||
10645 | /* Fill in the PLT entry itself. */ | |
7361da2c AB |
10646 | |
10647 | if (MIPSR6_P (output_bfd)) | |
10648 | plt_entry = mipsr6_exec_plt_entry; | |
10649 | else | |
10650 | plt_entry = mips_exec_plt_entry; | |
1bbce132 MR |
10651 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); |
10652 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, | |
10653 | loc + 4); | |
10654 | ||
10655 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
10656 | { | |
10657 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
10658 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10659 | } | |
10660 | else | |
10661 | { | |
10662 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
10663 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, | |
10664 | loc + 12); | |
10665 | } | |
6d30f5b2 | 10666 | } |
1bbce132 MR |
10667 | |
10668 | /* Now the compressed entry. They come after any standard ones. */ | |
10669 | if (h->plt.plist->comp_offset != MINUS_ONE) | |
6d30f5b2 | 10670 | { |
1bbce132 MR |
10671 | bfd_vma plt_offset; |
10672 | ||
10673 | plt_offset = (htab->plt_header_size + htab->plt_mips_offset | |
10674 | + h->plt.plist->comp_offset); | |
10675 | ||
ce558b89 | 10676 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
1bbce132 MR |
10677 | |
10678 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 10679 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
10680 | |
10681 | /* Fill in the PLT entry itself. */ | |
833794fc MR |
10682 | if (!MICROMIPS_P (output_bfd)) |
10683 | { | |
10684 | const bfd_vma *plt_entry = mips16_o32_exec_plt_entry; | |
10685 | ||
10686 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
10687 | bfd_put_16 (output_bfd, plt_entry[1], loc + 2); | |
10688 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10689 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
10690 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10691 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10692 | bfd_put_32 (output_bfd, got_address, loc + 12); | |
10693 | } | |
10694 | else if (htab->insn32) | |
10695 | { | |
10696 | const bfd_vma *plt_entry = micromips_insn32_o32_exec_plt_entry; | |
10697 | ||
10698 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
10699 | bfd_put_16 (output_bfd, got_address_high, loc + 2); | |
10700 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10701 | bfd_put_16 (output_bfd, got_address_low, loc + 6); | |
10702 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10703 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10704 | bfd_put_16 (output_bfd, plt_entry[6], loc + 12); | |
10705 | bfd_put_16 (output_bfd, got_address_low, loc + 14); | |
10706 | } | |
10707 | else | |
1bbce132 MR |
10708 | { |
10709 | const bfd_vma *plt_entry = micromips_o32_exec_plt_entry; | |
10710 | bfd_signed_vma gotpc_offset; | |
10711 | bfd_vma loc_address; | |
10712 | ||
10713 | BFD_ASSERT (got_address % 4 == 0); | |
10714 | ||
ce558b89 AM |
10715 | loc_address = (htab->root.splt->output_section->vma |
10716 | + htab->root.splt->output_offset + plt_offset); | |
1bbce132 MR |
10717 | gotpc_offset = got_address - ((loc_address | 3) ^ 3); |
10718 | ||
10719 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
10720 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
10721 | { | |
4eca0228 | 10722 | _bfd_error_handler |
695344c0 | 10723 | /* xgettext:c-format */ |
2dcf00ce | 10724 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
1bbce132 MR |
10725 | "beyond the range of ADDIUPC"), |
10726 | output_bfd, | |
ce558b89 | 10727 | htab->root.sgotplt->output_section, |
2dcf00ce | 10728 | (int64_t) gotpc_offset, |
c08bb8dd | 10729 | htab->root.splt->output_section); |
1bbce132 MR |
10730 | bfd_set_error (bfd_error_no_error); |
10731 | return FALSE; | |
10732 | } | |
10733 | bfd_put_16 (output_bfd, | |
10734 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
10735 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
10736 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
10737 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
10738 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
10739 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
10740 | } | |
6d30f5b2 | 10741 | } |
861fb55a DJ |
10742 | |
10743 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 10744 | mips_elf_output_dynamic_relocation (output_bfd, htab->root.srelplt, |
1bbce132 | 10745 | got_index - 2, h->dynindx, |
861fb55a DJ |
10746 | R_MIPS_JUMP_SLOT, got_address); |
10747 | ||
10748 | /* We distinguish between PLT entries and lazy-binding stubs by | |
10749 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
10750 | flag and leave the value if there are any relocations in the | |
10751 | binary where pointer equality matters. */ | |
10752 | sym->st_shndx = SHN_UNDEF; | |
10753 | if (h->pointer_equality_needed) | |
1bbce132 | 10754 | sym->st_other = ELF_ST_SET_MIPS_PLT (sym->st_other); |
861fb55a | 10755 | else |
1bbce132 MR |
10756 | { |
10757 | sym->st_value = 0; | |
10758 | sym->st_other = 0; | |
10759 | } | |
861fb55a | 10760 | } |
1bbce132 MR |
10761 | |
10762 | if (h->plt.plist != NULL && h->plt.plist->stub_offset != MINUS_ONE) | |
b49e97c9 | 10763 | { |
861fb55a | 10764 | /* We've decided to create a lazy-binding stub. */ |
1bbce132 MR |
10765 | bfd_boolean micromips_p = MICROMIPS_P (output_bfd); |
10766 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
10767 | bfd_vma stub_size = htab->function_stub_size; | |
5108fc1b | 10768 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
1bbce132 MR |
10769 | bfd_vma isa_bit = micromips_p; |
10770 | bfd_vma stub_big_size; | |
10771 | ||
833794fc | 10772 | if (!micromips_p) |
1bbce132 | 10773 | stub_big_size = MIPS_FUNCTION_STUB_BIG_SIZE; |
833794fc MR |
10774 | else if (htab->insn32) |
10775 | stub_big_size = MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE; | |
10776 | else | |
10777 | stub_big_size = MICROMIPS_FUNCTION_STUB_BIG_SIZE; | |
b49e97c9 TS |
10778 | |
10779 | /* This symbol has a stub. Set it up. */ | |
10780 | ||
10781 | BFD_ASSERT (h->dynindx != -1); | |
10782 | ||
1bbce132 | 10783 | BFD_ASSERT (stub_size == stub_big_size || h->dynindx <= 0xffff); |
3d6746ca DD |
10784 | |
10785 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
10786 | sign extension at runtime in the stub, resulting in a negative |
10787 | index value. */ | |
10788 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 10789 | return FALSE; |
b49e97c9 TS |
10790 | |
10791 | /* Fill the stub. */ | |
1bbce132 MR |
10792 | if (micromips_p) |
10793 | { | |
10794 | idx = 0; | |
10795 | bfd_put_micromips_32 (output_bfd, STUB_LW_MICROMIPS (output_bfd), | |
10796 | stub + idx); | |
10797 | idx += 4; | |
833794fc MR |
10798 | if (htab->insn32) |
10799 | { | |
10800 | bfd_put_micromips_32 (output_bfd, | |
40fc1451 | 10801 | STUB_MOVE32_MICROMIPS, stub + idx); |
833794fc MR |
10802 | idx += 4; |
10803 | } | |
10804 | else | |
10805 | { | |
10806 | bfd_put_16 (output_bfd, STUB_MOVE_MICROMIPS, stub + idx); | |
10807 | idx += 2; | |
10808 | } | |
1bbce132 MR |
10809 | if (stub_size == stub_big_size) |
10810 | { | |
10811 | long dynindx_hi = (h->dynindx >> 16) & 0x7fff; | |
10812 | ||
10813 | bfd_put_micromips_32 (output_bfd, | |
10814 | STUB_LUI_MICROMIPS (dynindx_hi), | |
10815 | stub + idx); | |
10816 | idx += 4; | |
10817 | } | |
833794fc MR |
10818 | if (htab->insn32) |
10819 | { | |
10820 | bfd_put_micromips_32 (output_bfd, STUB_JALR32_MICROMIPS, | |
10821 | stub + idx); | |
10822 | idx += 4; | |
10823 | } | |
10824 | else | |
10825 | { | |
10826 | bfd_put_16 (output_bfd, STUB_JALR_MICROMIPS, stub + idx); | |
10827 | idx += 2; | |
10828 | } | |
1bbce132 MR |
10829 | |
10830 | /* If a large stub is not required and sign extension is not a | |
10831 | problem, then use legacy code in the stub. */ | |
10832 | if (stub_size == stub_big_size) | |
10833 | bfd_put_micromips_32 (output_bfd, | |
10834 | STUB_ORI_MICROMIPS (h->dynindx & 0xffff), | |
10835 | stub + idx); | |
10836 | else if (h->dynindx & ~0x7fff) | |
10837 | bfd_put_micromips_32 (output_bfd, | |
10838 | STUB_LI16U_MICROMIPS (h->dynindx & 0xffff), | |
10839 | stub + idx); | |
10840 | else | |
10841 | bfd_put_micromips_32 (output_bfd, | |
10842 | STUB_LI16S_MICROMIPS (output_bfd, | |
10843 | h->dynindx), | |
10844 | stub + idx); | |
10845 | } | |
3d6746ca | 10846 | else |
1bbce132 MR |
10847 | { |
10848 | idx = 0; | |
10849 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
10850 | idx += 4; | |
40fc1451 | 10851 | bfd_put_32 (output_bfd, STUB_MOVE, stub + idx); |
1bbce132 MR |
10852 | idx += 4; |
10853 | if (stub_size == stub_big_size) | |
10854 | { | |
10855 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), | |
10856 | stub + idx); | |
10857 | idx += 4; | |
10858 | } | |
10859 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
10860 | idx += 4; | |
10861 | ||
10862 | /* If a large stub is not required and sign extension is not a | |
10863 | problem, then use legacy code in the stub. */ | |
10864 | if (stub_size == stub_big_size) | |
10865 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), | |
10866 | stub + idx); | |
10867 | else if (h->dynindx & ~0x7fff) | |
10868 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), | |
10869 | stub + idx); | |
10870 | else | |
10871 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), | |
10872 | stub + idx); | |
10873 | } | |
5108fc1b | 10874 | |
1bbce132 MR |
10875 | BFD_ASSERT (h->plt.plist->stub_offset <= htab->sstubs->size); |
10876 | memcpy (htab->sstubs->contents + h->plt.plist->stub_offset, | |
10877 | stub, stub_size); | |
b49e97c9 | 10878 | |
1bbce132 | 10879 | /* Mark the symbol as undefined. stub_offset != -1 occurs |
b49e97c9 TS |
10880 | only for the referenced symbol. */ |
10881 | sym->st_shndx = SHN_UNDEF; | |
10882 | ||
10883 | /* The run-time linker uses the st_value field of the symbol | |
10884 | to reset the global offset table entry for this external | |
10885 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
10886 | sym->st_value = (htab->sstubs->output_section->vma |
10887 | + htab->sstubs->output_offset | |
1bbce132 MR |
10888 | + h->plt.plist->stub_offset |
10889 | + isa_bit); | |
10890 | sym->st_other = other; | |
b49e97c9 TS |
10891 | } |
10892 | ||
738e5348 RS |
10893 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
10894 | refer to the stub, since only the stub uses the standard calling | |
10895 | conventions. */ | |
10896 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
10897 | { | |
10898 | BFD_ASSERT (hmips->need_fn_stub); | |
10899 | sym->st_value = (hmips->fn_stub->output_section->vma | |
10900 | + hmips->fn_stub->output_offset); | |
10901 | sym->st_size = hmips->fn_stub->size; | |
10902 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
10903 | } | |
10904 | ||
b49e97c9 | 10905 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 10906 | || h->forced_local); |
b49e97c9 | 10907 | |
ce558b89 | 10908 | sgot = htab->root.sgot; |
a8028dd0 | 10909 | g = htab->got_info; |
b49e97c9 TS |
10910 | BFD_ASSERT (g != NULL); |
10911 | ||
10912 | /* Run through the global symbol table, creating GOT entries for all | |
10913 | the symbols that need them. */ | |
020d7251 | 10914 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
10915 | { |
10916 | bfd_vma offset; | |
10917 | bfd_vma value; | |
10918 | ||
6eaa6adc | 10919 | value = sym->st_value; |
13fbec83 | 10920 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
b49e97c9 TS |
10921 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
10922 | } | |
10923 | ||
e641e783 | 10924 | if (hmips->global_got_area != GGA_NONE && g->next) |
f4416af6 AO |
10925 | { |
10926 | struct mips_got_entry e, *p; | |
0626d451 | 10927 | bfd_vma entry; |
f4416af6 | 10928 | bfd_vma offset; |
f4416af6 AO |
10929 | |
10930 | gg = g; | |
10931 | ||
10932 | e.abfd = output_bfd; | |
10933 | e.symndx = -1; | |
738e5348 | 10934 | e.d.h = hmips; |
9ab066b4 | 10935 | e.tls_type = GOT_TLS_NONE; |
143d77c5 | 10936 | |
f4416af6 AO |
10937 | for (g = g->next; g->next != gg; g = g->next) |
10938 | { | |
10939 | if (g->got_entries | |
10940 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
10941 | &e))) | |
10942 | { | |
10943 | offset = p->gotidx; | |
ce558b89 | 10944 | BFD_ASSERT (offset > 0 && offset < htab->root.sgot->size); |
0e1862bb | 10945 | if (bfd_link_pic (info) |
0626d451 RS |
10946 | || (elf_hash_table (info)->dynamic_sections_created |
10947 | && p->d.h != NULL | |
f5385ebf AM |
10948 | && p->d.h->root.def_dynamic |
10949 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
10950 | { |
10951 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
10952 | the various compatibility problems, it's easier to mock | |
10953 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
10954 | mips_elf_create_dynamic_relocation to calculate the | |
10955 | appropriate addend. */ | |
10956 | Elf_Internal_Rela rel[3]; | |
10957 | ||
10958 | memset (rel, 0, sizeof (rel)); | |
10959 | if (ABI_64_P (output_bfd)) | |
10960 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
10961 | else | |
10962 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
10963 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
10964 | ||
10965 | entry = 0; | |
10966 | if (! (mips_elf_create_dynamic_relocation | |
10967 | (output_bfd, info, rel, | |
10968 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
10969 | return FALSE; | |
10970 | } | |
10971 | else | |
10972 | entry = sym->st_value; | |
10973 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
10974 | } |
10975 | } | |
10976 | } | |
10977 | ||
b49e97c9 TS |
10978 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
10979 | name = h->root.root.string; | |
9637f6ef | 10980 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 10981 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
10982 | sym->st_shndx = SHN_ABS; |
10983 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
10984 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
10985 | { | |
10986 | sym->st_shndx = SHN_ABS; | |
10987 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10988 | sym->st_value = 1; | |
10989 | } | |
b49e97c9 TS |
10990 | else if (SGI_COMPAT (output_bfd)) |
10991 | { | |
10992 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
10993 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
10994 | { | |
10995 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10996 | sym->st_other = STO_PROTECTED; | |
10997 | sym->st_value = 0; | |
10998 | sym->st_shndx = SHN_MIPS_DATA; | |
10999 | } | |
11000 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
11001 | { | |
11002 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11003 | sym->st_other = STO_PROTECTED; | |
11004 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
11005 | sym->st_shndx = SHN_ABS; | |
11006 | } | |
11007 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
11008 | { | |
11009 | if (h->type == STT_FUNC) | |
11010 | sym->st_shndx = SHN_MIPS_TEXT; | |
11011 | else if (h->type == STT_OBJECT) | |
11012 | sym->st_shndx = SHN_MIPS_DATA; | |
11013 | } | |
11014 | } | |
11015 | ||
861fb55a DJ |
11016 | /* Emit a copy reloc, if needed. */ |
11017 | if (h->needs_copy) | |
11018 | { | |
11019 | asection *s; | |
11020 | bfd_vma symval; | |
11021 | ||
11022 | BFD_ASSERT (h->dynindx != -1); | |
11023 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
11024 | ||
11025 | s = mips_elf_rel_dyn_section (info, FALSE); | |
11026 | symval = (h->root.u.def.section->output_section->vma | |
11027 | + h->root.u.def.section->output_offset | |
11028 | + h->root.u.def.value); | |
11029 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
11030 | h->dynindx, R_MIPS_COPY, symval); | |
11031 | } | |
11032 | ||
b49e97c9 TS |
11033 | /* Handle the IRIX6-specific symbols. */ |
11034 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
11035 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
11036 | ||
cbf8d970 MR |
11037 | /* Keep dynamic compressed symbols odd. This allows the dynamic linker |
11038 | to treat compressed symbols like any other. */ | |
30c09090 | 11039 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
11040 | { |
11041 | BFD_ASSERT (sym->st_value & 1); | |
11042 | sym->st_other -= STO_MIPS16; | |
11043 | } | |
cbf8d970 MR |
11044 | else if (ELF_ST_IS_MICROMIPS (sym->st_other)) |
11045 | { | |
11046 | BFD_ASSERT (sym->st_value & 1); | |
11047 | sym->st_other -= STO_MICROMIPS; | |
11048 | } | |
b49e97c9 | 11049 | |
b34976b6 | 11050 | return TRUE; |
b49e97c9 TS |
11051 | } |
11052 | ||
0a44bf69 RS |
11053 | /* Likewise, for VxWorks. */ |
11054 | ||
11055 | bfd_boolean | |
11056 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
11057 | struct bfd_link_info *info, | |
11058 | struct elf_link_hash_entry *h, | |
11059 | Elf_Internal_Sym *sym) | |
11060 | { | |
11061 | bfd *dynobj; | |
11062 | asection *sgot; | |
11063 | struct mips_got_info *g; | |
11064 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 11065 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
11066 | |
11067 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11068 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 11069 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 11070 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 | 11071 | |
1bbce132 | 11072 | if (h->plt.plist != NULL && h->plt.plist->mips_offset != MINUS_ONE) |
0a44bf69 | 11073 | { |
6d79d2ed | 11074 | bfd_byte *loc; |
1bbce132 | 11075 | bfd_vma plt_address, got_address, got_offset, branch_offset; |
0a44bf69 RS |
11076 | Elf_Internal_Rela rel; |
11077 | static const bfd_vma *plt_entry; | |
1bbce132 MR |
11078 | bfd_vma gotplt_index; |
11079 | bfd_vma plt_offset; | |
11080 | ||
11081 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; | |
11082 | gotplt_index = h->plt.plist->gotplt_index; | |
0a44bf69 RS |
11083 | |
11084 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 11085 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 11086 | BFD_ASSERT (gotplt_index != MINUS_ONE); |
ce558b89 | 11087 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
0a44bf69 RS |
11088 | |
11089 | /* Calculate the address of the .plt entry. */ | |
ce558b89 AM |
11090 | plt_address = (htab->root.splt->output_section->vma |
11091 | + htab->root.splt->output_offset | |
1bbce132 | 11092 | + plt_offset); |
0a44bf69 RS |
11093 | |
11094 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
11095 | got_address = (htab->root.sgotplt->output_section->vma |
11096 | + htab->root.sgotplt->output_offset | |
1bbce132 | 11097 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd)); |
0a44bf69 RS |
11098 | |
11099 | /* Calculate the offset of the .got.plt entry from | |
11100 | _GLOBAL_OFFSET_TABLE_. */ | |
11101 | got_offset = mips_elf_gotplt_index (info, h); | |
11102 | ||
11103 | /* Calculate the offset for the branch at the start of the PLT | |
11104 | entry. The branch jumps to the beginning of .plt. */ | |
1bbce132 | 11105 | branch_offset = -(plt_offset / 4 + 1) & 0xffff; |
0a44bf69 RS |
11106 | |
11107 | /* Fill in the initial value of the .got.plt entry. */ | |
11108 | bfd_put_32 (output_bfd, plt_address, | |
ce558b89 | 11109 | (htab->root.sgotplt->contents |
1bbce132 | 11110 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd))); |
0a44bf69 RS |
11111 | |
11112 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 11113 | loc = htab->root.splt->contents + plt_offset; |
0a44bf69 | 11114 | |
0e1862bb | 11115 | if (bfd_link_pic (info)) |
0a44bf69 RS |
11116 | { |
11117 | plt_entry = mips_vxworks_shared_plt_entry; | |
11118 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11119 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11120 | } |
11121 | else | |
11122 | { | |
11123 | bfd_vma got_address_high, got_address_low; | |
11124 | ||
11125 | plt_entry = mips_vxworks_exec_plt_entry; | |
11126 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
11127 | got_address_low = got_address & 0xffff; | |
11128 | ||
11129 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11130 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11131 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); |
11132 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
11133 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11134 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11135 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11136 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11137 | ||
11138 | loc = (htab->srelplt2->contents | |
1bbce132 | 11139 | + (gotplt_index * 3 + 2) * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11140 | |
11141 | /* Emit a relocation for the .got.plt entry. */ | |
11142 | rel.r_offset = got_address; | |
11143 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
1bbce132 | 11144 | rel.r_addend = plt_offset; |
0a44bf69 RS |
11145 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
11146 | ||
11147 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
11148 | loc += sizeof (Elf32_External_Rela); | |
11149 | rel.r_offset = plt_address + 8; | |
11150 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11151 | rel.r_addend = got_offset; | |
11152 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11153 | ||
11154 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
11155 | loc += sizeof (Elf32_External_Rela); | |
11156 | rel.r_offset += 4; | |
11157 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11158 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11159 | } | |
11160 | ||
11161 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 11162 | loc = (htab->root.srelplt->contents |
1bbce132 | 11163 | + gotplt_index * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11164 | rel.r_offset = got_address; |
11165 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
11166 | rel.r_addend = 0; | |
11167 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11168 | ||
11169 | if (!h->def_regular) | |
11170 | sym->st_shndx = SHN_UNDEF; | |
11171 | } | |
11172 | ||
11173 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
11174 | ||
ce558b89 | 11175 | sgot = htab->root.sgot; |
a8028dd0 | 11176 | g = htab->got_info; |
0a44bf69 RS |
11177 | BFD_ASSERT (g != NULL); |
11178 | ||
11179 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 11180 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
11181 | { |
11182 | bfd_vma offset; | |
11183 | Elf_Internal_Rela outrel; | |
11184 | bfd_byte *loc; | |
11185 | asection *s; | |
11186 | ||
11187 | /* Install the symbol value in the GOT. */ | |
13fbec83 | 11188 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
0a44bf69 RS |
11189 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); |
11190 | ||
11191 | /* Add a dynamic relocation for it. */ | |
11192 | s = mips_elf_rel_dyn_section (info, FALSE); | |
11193 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
11194 | outrel.r_offset = (sgot->output_section->vma | |
11195 | + sgot->output_offset | |
11196 | + offset); | |
11197 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
11198 | outrel.r_addend = 0; | |
11199 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
11200 | } | |
11201 | ||
11202 | /* Emit a copy reloc, if needed. */ | |
11203 | if (h->needs_copy) | |
11204 | { | |
11205 | Elf_Internal_Rela rel; | |
5474d94f AM |
11206 | asection *srel; |
11207 | bfd_byte *loc; | |
0a44bf69 RS |
11208 | |
11209 | BFD_ASSERT (h->dynindx != -1); | |
11210 | ||
11211 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
11212 | + h->root.u.def.section->output_offset | |
11213 | + h->root.u.def.value); | |
11214 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
11215 | rel.r_addend = 0; | |
afbf7e8e | 11216 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
11217 | srel = htab->root.sreldynrelro; |
11218 | else | |
11219 | srel = htab->root.srelbss; | |
11220 | loc = srel->contents + srel->reloc_count * sizeof (Elf32_External_Rela); | |
11221 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11222 | ++srel->reloc_count; | |
0a44bf69 RS |
11223 | } |
11224 | ||
df58fc94 RS |
11225 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
11226 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
11227 | sym->st_value &= ~1; |
11228 | ||
11229 | return TRUE; | |
11230 | } | |
11231 | ||
861fb55a DJ |
11232 | /* Write out a plt0 entry to the beginning of .plt. */ |
11233 | ||
1bbce132 | 11234 | static bfd_boolean |
861fb55a DJ |
11235 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) |
11236 | { | |
11237 | bfd_byte *loc; | |
11238 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
11239 | static const bfd_vma *plt_entry; | |
11240 | struct mips_elf_link_hash_table *htab; | |
11241 | ||
11242 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11243 | BFD_ASSERT (htab != NULL); |
11244 | ||
861fb55a DJ |
11245 | if (ABI_64_P (output_bfd)) |
11246 | plt_entry = mips_n64_exec_plt0_entry; | |
11247 | else if (ABI_N32_P (output_bfd)) | |
11248 | plt_entry = mips_n32_exec_plt0_entry; | |
833794fc | 11249 | else if (!htab->plt_header_is_comp) |
861fb55a | 11250 | plt_entry = mips_o32_exec_plt0_entry; |
833794fc MR |
11251 | else if (htab->insn32) |
11252 | plt_entry = micromips_insn32_o32_exec_plt0_entry; | |
11253 | else | |
11254 | plt_entry = micromips_o32_exec_plt0_entry; | |
861fb55a DJ |
11255 | |
11256 | /* Calculate the value of .got.plt. */ | |
ce558b89 AM |
11257 | gotplt_value = (htab->root.sgotplt->output_section->vma |
11258 | + htab->root.sgotplt->output_offset); | |
861fb55a DJ |
11259 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; |
11260 | gotplt_value_low = gotplt_value & 0xffff; | |
11261 | ||
11262 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
11263 | not be loaded in two instructions. */ | |
789ff5b6 MR |
11264 | if (ABI_64_P (output_bfd) |
11265 | && ((gotplt_value + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
11266 | { | |
11267 | _bfd_error_handler | |
11268 | /* xgettext:c-format */ | |
11269 | (_("%pB: `%pA' start VMA of %#" PRIx64 " outside the 32-bit range " | |
11270 | "supported; consider using `-Ttext-segment=...'"), | |
11271 | output_bfd, | |
11272 | htab->root.sgotplt->output_section, | |
11273 | (int64_t) gotplt_value); | |
11274 | bfd_set_error (bfd_error_no_error); | |
11275 | return FALSE; | |
11276 | } | |
861fb55a DJ |
11277 | |
11278 | /* Install the PLT header. */ | |
ce558b89 | 11279 | loc = htab->root.splt->contents; |
1bbce132 MR |
11280 | if (plt_entry == micromips_o32_exec_plt0_entry) |
11281 | { | |
11282 | bfd_vma gotpc_offset; | |
11283 | bfd_vma loc_address; | |
11284 | size_t i; | |
11285 | ||
11286 | BFD_ASSERT (gotplt_value % 4 == 0); | |
11287 | ||
ce558b89 AM |
11288 | loc_address = (htab->root.splt->output_section->vma |
11289 | + htab->root.splt->output_offset); | |
1bbce132 MR |
11290 | gotpc_offset = gotplt_value - ((loc_address | 3) ^ 3); |
11291 | ||
11292 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
11293 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
11294 | { | |
4eca0228 | 11295 | _bfd_error_handler |
695344c0 | 11296 | /* xgettext:c-format */ |
2dcf00ce AM |
11297 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
11298 | "beyond the range of ADDIUPC"), | |
1bbce132 | 11299 | output_bfd, |
ce558b89 | 11300 | htab->root.sgotplt->output_section, |
2dcf00ce | 11301 | (int64_t) gotpc_offset, |
c08bb8dd | 11302 | htab->root.splt->output_section); |
1bbce132 MR |
11303 | bfd_set_error (bfd_error_no_error); |
11304 | return FALSE; | |
11305 | } | |
11306 | bfd_put_16 (output_bfd, | |
11307 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
11308 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
11309 | for (i = 2; i < ARRAY_SIZE (micromips_o32_exec_plt0_entry); i++) | |
11310 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11311 | } | |
833794fc MR |
11312 | else if (plt_entry == micromips_insn32_o32_exec_plt0_entry) |
11313 | { | |
11314 | size_t i; | |
11315 | ||
11316 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
11317 | bfd_put_16 (output_bfd, gotplt_value_high, loc + 2); | |
11318 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11319 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 6); | |
11320 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11321 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 10); | |
11322 | for (i = 6; i < ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); i++) | |
11323 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11324 | } | |
1bbce132 MR |
11325 | else |
11326 | { | |
11327 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
11328 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
11329 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
11330 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11331 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11332 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11333 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11334 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11335 | } | |
11336 | ||
11337 | return TRUE; | |
861fb55a DJ |
11338 | } |
11339 | ||
0a44bf69 RS |
11340 | /* Install the PLT header for a VxWorks executable and finalize the |
11341 | contents of .rela.plt.unloaded. */ | |
11342 | ||
11343 | static void | |
11344 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11345 | { | |
11346 | Elf_Internal_Rela rela; | |
11347 | bfd_byte *loc; | |
11348 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
11349 | static const bfd_vma *plt_entry; | |
11350 | struct mips_elf_link_hash_table *htab; | |
11351 | ||
11352 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11353 | BFD_ASSERT (htab != NULL); |
11354 | ||
0a44bf69 RS |
11355 | plt_entry = mips_vxworks_exec_plt0_entry; |
11356 | ||
11357 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
11358 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
11359 | + htab->root.hgot->root.u.def.section->output_offset | |
11360 | + htab->root.hgot->root.u.def.value); | |
11361 | ||
11362 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
11363 | got_value_low = got_value & 0xffff; | |
11364 | ||
11365 | /* Calculate the address of the PLT header. */ | |
ce558b89 AM |
11366 | plt_address = (htab->root.splt->output_section->vma |
11367 | + htab->root.splt->output_offset); | |
0a44bf69 RS |
11368 | |
11369 | /* Install the PLT header. */ | |
ce558b89 | 11370 | loc = htab->root.splt->contents; |
0a44bf69 RS |
11371 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); |
11372 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
11373 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
11374 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11375 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11376 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11377 | ||
11378 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
11379 | loc = htab->srelplt2->contents; | |
11380 | rela.r_offset = plt_address; | |
11381 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11382 | rela.r_addend = 0; | |
11383 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11384 | loc += sizeof (Elf32_External_Rela); | |
11385 | ||
11386 | /* Output the relocation for the following addiu of | |
11387 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
11388 | rela.r_offset += 4; | |
11389 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11390 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11391 | loc += sizeof (Elf32_External_Rela); | |
11392 | ||
11393 | /* Fix up the remaining relocations. They may have the wrong | |
11394 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
11395 | in which symbols were output. */ | |
11396 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
11397 | { | |
11398 | Elf_Internal_Rela rel; | |
11399 | ||
11400 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11401 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
11402 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11403 | loc += sizeof (Elf32_External_Rela); | |
11404 | ||
11405 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11406 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11407 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11408 | loc += sizeof (Elf32_External_Rela); | |
11409 | ||
11410 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11411 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11412 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11413 | loc += sizeof (Elf32_External_Rela); | |
11414 | } | |
11415 | } | |
11416 | ||
11417 | /* Install the PLT header for a VxWorks shared library. */ | |
11418 | ||
11419 | static void | |
11420 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11421 | { | |
11422 | unsigned int i; | |
11423 | struct mips_elf_link_hash_table *htab; | |
11424 | ||
11425 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11426 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
11427 | |
11428 | /* We just need to copy the entry byte-by-byte. */ | |
11429 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
11430 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
ce558b89 | 11431 | htab->root.splt->contents + i * 4); |
0a44bf69 RS |
11432 | } |
11433 | ||
b49e97c9 TS |
11434 | /* Finish up the dynamic sections. */ |
11435 | ||
b34976b6 | 11436 | bfd_boolean |
9719ad41 RS |
11437 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
11438 | struct bfd_link_info *info) | |
b49e97c9 TS |
11439 | { |
11440 | bfd *dynobj; | |
11441 | asection *sdyn; | |
11442 | asection *sgot; | |
f4416af6 | 11443 | struct mips_got_info *gg, *g; |
0a44bf69 | 11444 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 11445 | |
0a44bf69 | 11446 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
11447 | BFD_ASSERT (htab != NULL); |
11448 | ||
b49e97c9 TS |
11449 | dynobj = elf_hash_table (info)->dynobj; |
11450 | ||
3d4d4302 | 11451 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 11452 | |
ce558b89 | 11453 | sgot = htab->root.sgot; |
23cc69b6 | 11454 | gg = htab->got_info; |
b49e97c9 TS |
11455 | |
11456 | if (elf_hash_table (info)->dynamic_sections_created) | |
11457 | { | |
11458 | bfd_byte *b; | |
943284cc | 11459 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
11460 | |
11461 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
11462 | BFD_ASSERT (gg != NULL); |
11463 | ||
d7206569 | 11464 | g = mips_elf_bfd_got (output_bfd, FALSE); |
b49e97c9 TS |
11465 | BFD_ASSERT (g != NULL); |
11466 | ||
11467 | for (b = sdyn->contents; | |
eea6121a | 11468 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
11469 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
11470 | { | |
11471 | Elf_Internal_Dyn dyn; | |
11472 | const char *name; | |
11473 | size_t elemsize; | |
11474 | asection *s; | |
b34976b6 | 11475 | bfd_boolean swap_out_p; |
b49e97c9 TS |
11476 | |
11477 | /* Read in the current dynamic entry. */ | |
11478 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
11479 | ||
11480 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 11481 | swap_out_p = TRUE; |
b49e97c9 TS |
11482 | |
11483 | switch (dyn.d_tag) | |
11484 | { | |
11485 | case DT_RELENT: | |
b49e97c9 TS |
11486 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
11487 | break; | |
11488 | ||
0a44bf69 RS |
11489 | case DT_RELAENT: |
11490 | BFD_ASSERT (htab->is_vxworks); | |
11491 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
11492 | break; | |
11493 | ||
b49e97c9 TS |
11494 | case DT_STRSZ: |
11495 | /* Rewrite DT_STRSZ. */ | |
11496 | dyn.d_un.d_val = | |
11497 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
11498 | break; | |
11499 | ||
11500 | case DT_PLTGOT: | |
ce558b89 | 11501 | s = htab->root.sgot; |
861fb55a DJ |
11502 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
11503 | break; | |
11504 | ||
11505 | case DT_MIPS_PLTGOT: | |
ce558b89 | 11506 | s = htab->root.sgotplt; |
861fb55a | 11507 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
b49e97c9 TS |
11508 | break; |
11509 | ||
11510 | case DT_MIPS_RLD_VERSION: | |
11511 | dyn.d_un.d_val = 1; /* XXX */ | |
11512 | break; | |
11513 | ||
11514 | case DT_MIPS_FLAGS: | |
11515 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
11516 | break; | |
11517 | ||
b49e97c9 | 11518 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
11519 | { |
11520 | time_t t; | |
11521 | time (&t); | |
11522 | dyn.d_un.d_val = t; | |
11523 | } | |
b49e97c9 TS |
11524 | break; |
11525 | ||
11526 | case DT_MIPS_ICHECKSUM: | |
11527 | /* XXX FIXME: */ | |
b34976b6 | 11528 | swap_out_p = FALSE; |
b49e97c9 TS |
11529 | break; |
11530 | ||
11531 | case DT_MIPS_IVERSION: | |
11532 | /* XXX FIXME: */ | |
b34976b6 | 11533 | swap_out_p = FALSE; |
b49e97c9 TS |
11534 | break; |
11535 | ||
11536 | case DT_MIPS_BASE_ADDRESS: | |
11537 | s = output_bfd->sections; | |
11538 | BFD_ASSERT (s != NULL); | |
11539 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
11540 | break; | |
11541 | ||
11542 | case DT_MIPS_LOCAL_GOTNO: | |
11543 | dyn.d_un.d_val = g->local_gotno; | |
11544 | break; | |
11545 | ||
11546 | case DT_MIPS_UNREFEXTNO: | |
11547 | /* The index into the dynamic symbol table which is the | |
11548 | entry of the first external symbol that is not | |
11549 | referenced within the same object. */ | |
11550 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
11551 | break; | |
11552 | ||
11553 | case DT_MIPS_GOTSYM: | |
d222d210 | 11554 | if (htab->global_gotsym) |
b49e97c9 | 11555 | { |
d222d210 | 11556 | dyn.d_un.d_val = htab->global_gotsym->dynindx; |
b49e97c9 TS |
11557 | break; |
11558 | } | |
11559 | /* In case if we don't have global got symbols we default | |
11560 | to setting DT_MIPS_GOTSYM to the same value as | |
1a0670f3 AM |
11561 | DT_MIPS_SYMTABNO. */ |
11562 | /* Fall through. */ | |
b49e97c9 TS |
11563 | |
11564 | case DT_MIPS_SYMTABNO: | |
11565 | name = ".dynsym"; | |
11566 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
4ade44b7 | 11567 | s = bfd_get_linker_section (dynobj, name); |
b49e97c9 | 11568 | |
131e2f8e MF |
11569 | if (s != NULL) |
11570 | dyn.d_un.d_val = s->size / elemsize; | |
11571 | else | |
11572 | dyn.d_un.d_val = 0; | |
b49e97c9 TS |
11573 | break; |
11574 | ||
11575 | case DT_MIPS_HIPAGENO: | |
861fb55a | 11576 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
11577 | break; |
11578 | ||
11579 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
11580 | { |
11581 | struct elf_link_hash_entry *h; | |
11582 | h = mips_elf_hash_table (info)->rld_symbol; | |
11583 | if (!h) | |
11584 | { | |
11585 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11586 | swap_out_p = FALSE; | |
11587 | break; | |
11588 | } | |
11589 | s = h->root.u.def.section; | |
a5499fa4 MF |
11590 | |
11591 | /* The MIPS_RLD_MAP tag stores the absolute address of the | |
11592 | debug pointer. */ | |
b4082c70 DD |
11593 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
11594 | + h->root.u.def.value); | |
11595 | } | |
b49e97c9 TS |
11596 | break; |
11597 | ||
a5499fa4 MF |
11598 | case DT_MIPS_RLD_MAP_REL: |
11599 | { | |
11600 | struct elf_link_hash_entry *h; | |
11601 | bfd_vma dt_addr, rld_addr; | |
11602 | h = mips_elf_hash_table (info)->rld_symbol; | |
11603 | if (!h) | |
11604 | { | |
11605 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11606 | swap_out_p = FALSE; | |
11607 | break; | |
11608 | } | |
11609 | s = h->root.u.def.section; | |
11610 | ||
11611 | /* The MIPS_RLD_MAP_REL tag stores the offset to the debug | |
11612 | pointer, relative to the address of the tag. */ | |
11613 | dt_addr = (sdyn->output_section->vma + sdyn->output_offset | |
d5cff5df | 11614 | + (b - sdyn->contents)); |
a5499fa4 MF |
11615 | rld_addr = (s->output_section->vma + s->output_offset |
11616 | + h->root.u.def.value); | |
11617 | dyn.d_un.d_ptr = rld_addr - dt_addr; | |
11618 | } | |
11619 | break; | |
11620 | ||
b49e97c9 TS |
11621 | case DT_MIPS_OPTIONS: |
11622 | s = (bfd_get_section_by_name | |
11623 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
11624 | dyn.d_un.d_ptr = s->vma; | |
11625 | break; | |
11626 | ||
0a44bf69 | 11627 | case DT_PLTREL: |
861fb55a DJ |
11628 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
11629 | if (htab->is_vxworks) | |
11630 | dyn.d_un.d_val = DT_RELA; | |
11631 | else | |
11632 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
11633 | break; |
11634 | ||
11635 | case DT_PLTRELSZ: | |
861fb55a | 11636 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 | 11637 | dyn.d_un.d_val = htab->root.srelplt->size; |
0a44bf69 RS |
11638 | break; |
11639 | ||
11640 | case DT_JMPREL: | |
861fb55a | 11641 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 AM |
11642 | dyn.d_un.d_ptr = (htab->root.srelplt->output_section->vma |
11643 | + htab->root.srelplt->output_offset); | |
0a44bf69 RS |
11644 | break; |
11645 | ||
943284cc DJ |
11646 | case DT_TEXTREL: |
11647 | /* If we didn't need any text relocations after all, delete | |
11648 | the dynamic tag. */ | |
11649 | if (!(info->flags & DF_TEXTREL)) | |
11650 | { | |
11651 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
11652 | swap_out_p = FALSE; | |
11653 | } | |
11654 | break; | |
11655 | ||
11656 | case DT_FLAGS: | |
11657 | /* If we didn't need any text relocations after all, clear | |
11658 | DF_TEXTREL from DT_FLAGS. */ | |
11659 | if (!(info->flags & DF_TEXTREL)) | |
11660 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
11661 | else | |
11662 | swap_out_p = FALSE; | |
11663 | break; | |
11664 | ||
b49e97c9 | 11665 | default: |
b34976b6 | 11666 | swap_out_p = FALSE; |
7a2b07ff NS |
11667 | if (htab->is_vxworks |
11668 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11669 | swap_out_p = TRUE; | |
b49e97c9 TS |
11670 | break; |
11671 | } | |
11672 | ||
943284cc | 11673 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 11674 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
11675 | (dynobj, &dyn, b - dyn_skipped); |
11676 | ||
11677 | if (dyn_to_skip) | |
11678 | { | |
11679 | dyn_skipped += dyn_to_skip; | |
11680 | dyn_to_skip = 0; | |
11681 | } | |
b49e97c9 | 11682 | } |
943284cc DJ |
11683 | |
11684 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
11685 | if (dyn_skipped > 0) | |
11686 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
11687 | } |
11688 | ||
b55fd4d4 DJ |
11689 | if (sgot != NULL && sgot->size > 0 |
11690 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 11691 | { |
0a44bf69 RS |
11692 | if (htab->is_vxworks) |
11693 | { | |
11694 | /* The first entry of the global offset table points to the | |
11695 | ".dynamic" section. The second is initialized by the | |
11696 | loader and contains the shared library identifier. | |
11697 | The third is also initialized by the loader and points | |
11698 | to the lazy resolution stub. */ | |
11699 | MIPS_ELF_PUT_WORD (output_bfd, | |
11700 | sdyn->output_offset + sdyn->output_section->vma, | |
11701 | sgot->contents); | |
11702 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
11703 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
11704 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
11705 | sgot->contents | |
11706 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
11707 | } | |
11708 | else | |
11709 | { | |
11710 | /* The first entry of the global offset table will be filled at | |
11711 | runtime. The second entry will be used by some runtime loaders. | |
11712 | This isn't the case of IRIX rld. */ | |
11713 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 11714 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
11715 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
11716 | } | |
b49e97c9 | 11717 | |
54938e2a TS |
11718 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
11719 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
11720 | } | |
b49e97c9 | 11721 | |
f4416af6 AO |
11722 | /* Generate dynamic relocations for the non-primary gots. */ |
11723 | if (gg != NULL && gg->next) | |
11724 | { | |
11725 | Elf_Internal_Rela rel[3]; | |
11726 | bfd_vma addend = 0; | |
11727 | ||
11728 | memset (rel, 0, sizeof (rel)); | |
11729 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
11730 | ||
11731 | for (g = gg->next; g->next != gg; g = g->next) | |
11732 | { | |
91d6fa6a | 11733 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 11734 | + g->next->tls_gotno; |
f4416af6 | 11735 | |
9719ad41 | 11736 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 11737 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
11738 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
11739 | sgot->contents | |
91d6fa6a | 11740 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 | 11741 | |
0e1862bb | 11742 | if (! bfd_link_pic (info)) |
f4416af6 AO |
11743 | continue; |
11744 | ||
cb22ccf4 | 11745 | for (; got_index < g->local_gotno; got_index++) |
f4416af6 | 11746 | { |
cb22ccf4 KCY |
11747 | if (got_index >= g->assigned_low_gotno |
11748 | && got_index <= g->assigned_high_gotno) | |
11749 | continue; | |
11750 | ||
f4416af6 | 11751 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset |
cb22ccf4 | 11752 | = got_index * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
11753 | if (!(mips_elf_create_dynamic_relocation |
11754 | (output_bfd, info, rel, NULL, | |
11755 | bfd_abs_section_ptr, | |
11756 | 0, &addend, sgot))) | |
11757 | return FALSE; | |
11758 | BFD_ASSERT (addend == 0); | |
11759 | } | |
11760 | } | |
11761 | } | |
11762 | ||
3133ddbf DJ |
11763 | /* The generation of dynamic relocations for the non-primary gots |
11764 | adds more dynamic relocations. We cannot count them until | |
11765 | here. */ | |
11766 | ||
11767 | if (elf_hash_table (info)->dynamic_sections_created) | |
11768 | { | |
11769 | bfd_byte *b; | |
11770 | bfd_boolean swap_out_p; | |
11771 | ||
11772 | BFD_ASSERT (sdyn != NULL); | |
11773 | ||
11774 | for (b = sdyn->contents; | |
11775 | b < sdyn->contents + sdyn->size; | |
11776 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
11777 | { | |
11778 | Elf_Internal_Dyn dyn; | |
11779 | asection *s; | |
11780 | ||
11781 | /* Read in the current dynamic entry. */ | |
11782 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
11783 | ||
11784 | /* Assume that we're going to modify it and write it out. */ | |
11785 | swap_out_p = TRUE; | |
11786 | ||
11787 | switch (dyn.d_tag) | |
11788 | { | |
11789 | case DT_RELSZ: | |
11790 | /* Reduce DT_RELSZ to account for any relocations we | |
11791 | decided not to make. This is for the n64 irix rld, | |
11792 | which doesn't seem to apply any relocations if there | |
11793 | are trailing null entries. */ | |
0a44bf69 | 11794 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
11795 | dyn.d_un.d_val = (s->reloc_count |
11796 | * (ABI_64_P (output_bfd) | |
11797 | ? sizeof (Elf64_Mips_External_Rel) | |
11798 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
11799 | /* Adjust the section size too. Tools like the prelinker |
11800 | can reasonably expect the values to the same. */ | |
11801 | elf_section_data (s->output_section)->this_hdr.sh_size | |
11802 | = dyn.d_un.d_val; | |
3133ddbf DJ |
11803 | break; |
11804 | ||
11805 | default: | |
11806 | swap_out_p = FALSE; | |
11807 | break; | |
11808 | } | |
11809 | ||
11810 | if (swap_out_p) | |
11811 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
11812 | (dynobj, &dyn, b); | |
11813 | } | |
11814 | } | |
11815 | ||
b49e97c9 | 11816 | { |
b49e97c9 TS |
11817 | asection *s; |
11818 | Elf32_compact_rel cpt; | |
11819 | ||
b49e97c9 TS |
11820 | if (SGI_COMPAT (output_bfd)) |
11821 | { | |
11822 | /* Write .compact_rel section out. */ | |
3d4d4302 | 11823 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
11824 | if (s != NULL) |
11825 | { | |
11826 | cpt.id1 = 1; | |
11827 | cpt.num = s->reloc_count; | |
11828 | cpt.id2 = 2; | |
11829 | cpt.offset = (s->output_section->filepos | |
11830 | + sizeof (Elf32_External_compact_rel)); | |
11831 | cpt.reserved0 = 0; | |
11832 | cpt.reserved1 = 0; | |
11833 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
11834 | ((Elf32_External_compact_rel *) | |
11835 | s->contents)); | |
11836 | ||
11837 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 11838 | if (htab->sstubs != NULL) |
b49e97c9 TS |
11839 | { |
11840 | file_ptr dummy_offset; | |
11841 | ||
4e41d0d7 RS |
11842 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
11843 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
11844 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 11845 | htab->function_stub_size); |
b49e97c9 TS |
11846 | } |
11847 | } | |
11848 | } | |
11849 | ||
0a44bf69 RS |
11850 | /* The psABI says that the dynamic relocations must be sorted in |
11851 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
11852 | this, and because the code below handles REL rather than RELA | |
11853 | relocations, using it for VxWorks would be outright harmful. */ | |
11854 | if (!htab->is_vxworks) | |
b49e97c9 | 11855 | { |
0a44bf69 RS |
11856 | s = mips_elf_rel_dyn_section (info, FALSE); |
11857 | if (s != NULL | |
11858 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
11859 | { | |
11860 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 11861 | |
0a44bf69 RS |
11862 | if (ABI_64_P (output_bfd)) |
11863 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
11864 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
11865 | sort_dynamic_relocs_64); | |
11866 | else | |
11867 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
11868 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
11869 | sort_dynamic_relocs); | |
11870 | } | |
b49e97c9 | 11871 | } |
b49e97c9 TS |
11872 | } |
11873 | ||
ce558b89 | 11874 | if (htab->root.splt && htab->root.splt->size > 0) |
0a44bf69 | 11875 | { |
861fb55a DJ |
11876 | if (htab->is_vxworks) |
11877 | { | |
0e1862bb | 11878 | if (bfd_link_pic (info)) |
861fb55a DJ |
11879 | mips_vxworks_finish_shared_plt (output_bfd, info); |
11880 | else | |
11881 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
11882 | } | |
0a44bf69 | 11883 | else |
861fb55a | 11884 | { |
0e1862bb | 11885 | BFD_ASSERT (!bfd_link_pic (info)); |
1bbce132 MR |
11886 | if (!mips_finish_exec_plt (output_bfd, info)) |
11887 | return FALSE; | |
861fb55a | 11888 | } |
0a44bf69 | 11889 | } |
b34976b6 | 11890 | return TRUE; |
b49e97c9 TS |
11891 | } |
11892 | ||
b49e97c9 | 11893 | |
64543e1a RS |
11894 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
11895 | ||
11896 | static void | |
9719ad41 | 11897 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 11898 | { |
64543e1a | 11899 | flagword val; |
b49e97c9 TS |
11900 | |
11901 | switch (bfd_get_mach (abfd)) | |
11902 | { | |
11903 | default: | |
11904 | case bfd_mach_mips3000: | |
11905 | val = E_MIPS_ARCH_1; | |
11906 | break; | |
11907 | ||
11908 | case bfd_mach_mips3900: | |
11909 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
11910 | break; | |
11911 | ||
11912 | case bfd_mach_mips6000: | |
11913 | val = E_MIPS_ARCH_2; | |
11914 | break; | |
11915 | ||
b417536f MR |
11916 | case bfd_mach_mips4010: |
11917 | val = E_MIPS_ARCH_2 | E_MIPS_MACH_4010; | |
11918 | break; | |
11919 | ||
b49e97c9 TS |
11920 | case bfd_mach_mips4000: |
11921 | case bfd_mach_mips4300: | |
11922 | case bfd_mach_mips4400: | |
11923 | case bfd_mach_mips4600: | |
11924 | val = E_MIPS_ARCH_3; | |
11925 | break; | |
11926 | ||
b49e97c9 TS |
11927 | case bfd_mach_mips4100: |
11928 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
11929 | break; | |
11930 | ||
11931 | case bfd_mach_mips4111: | |
11932 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
11933 | break; | |
11934 | ||
00707a0e RS |
11935 | case bfd_mach_mips4120: |
11936 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
11937 | break; | |
11938 | ||
b49e97c9 TS |
11939 | case bfd_mach_mips4650: |
11940 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
11941 | break; | |
11942 | ||
00707a0e RS |
11943 | case bfd_mach_mips5400: |
11944 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
11945 | break; | |
11946 | ||
11947 | case bfd_mach_mips5500: | |
11948 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
11949 | break; | |
11950 | ||
e407c74b NC |
11951 | case bfd_mach_mips5900: |
11952 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
11953 | break; | |
11954 | ||
0d2e43ed ILT |
11955 | case bfd_mach_mips9000: |
11956 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
11957 | break; | |
11958 | ||
b49e97c9 | 11959 | case bfd_mach_mips5000: |
5a7ea749 | 11960 | case bfd_mach_mips7000: |
b49e97c9 TS |
11961 | case bfd_mach_mips8000: |
11962 | case bfd_mach_mips10000: | |
11963 | case bfd_mach_mips12000: | |
3aa3176b TS |
11964 | case bfd_mach_mips14000: |
11965 | case bfd_mach_mips16000: | |
b49e97c9 TS |
11966 | val = E_MIPS_ARCH_4; |
11967 | break; | |
11968 | ||
11969 | case bfd_mach_mips5: | |
11970 | val = E_MIPS_ARCH_5; | |
11971 | break; | |
11972 | ||
350cc38d MS |
11973 | case bfd_mach_mips_loongson_2e: |
11974 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
11975 | break; | |
11976 | ||
11977 | case bfd_mach_mips_loongson_2f: | |
11978 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
11979 | break; | |
11980 | ||
b49e97c9 TS |
11981 | case bfd_mach_mips_sb1: |
11982 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
11983 | break; | |
11984 | ||
d051516a | 11985 | case bfd_mach_mips_loongson_3a: |
4ba154f5 | 11986 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_LS3A; |
d051516a NC |
11987 | break; |
11988 | ||
6f179bd0 | 11989 | case bfd_mach_mips_octeon: |
dd6a37e7 | 11990 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
11991 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
11992 | break; | |
11993 | ||
2c629856 N |
11994 | case bfd_mach_mips_octeon3: |
11995 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON3; | |
11996 | break; | |
11997 | ||
52b6b6b9 JM |
11998 | case bfd_mach_mips_xlr: |
11999 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
12000 | break; | |
12001 | ||
432233b3 AP |
12002 | case bfd_mach_mips_octeon2: |
12003 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
12004 | break; | |
12005 | ||
b49e97c9 TS |
12006 | case bfd_mach_mipsisa32: |
12007 | val = E_MIPS_ARCH_32; | |
12008 | break; | |
12009 | ||
12010 | case bfd_mach_mipsisa64: | |
12011 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
12012 | break; |
12013 | ||
12014 | case bfd_mach_mipsisa32r2: | |
ae52f483 AB |
12015 | case bfd_mach_mipsisa32r3: |
12016 | case bfd_mach_mipsisa32r5: | |
af7ee8bf CD |
12017 | val = E_MIPS_ARCH_32R2; |
12018 | break; | |
5f74bc13 | 12019 | |
38bf472a MR |
12020 | case bfd_mach_mips_interaptiv_mr2: |
12021 | val = E_MIPS_ARCH_32R2 | E_MIPS_MACH_IAMR2; | |
12022 | break; | |
12023 | ||
5f74bc13 | 12024 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
12025 | case bfd_mach_mipsisa64r3: |
12026 | case bfd_mach_mipsisa64r5: | |
5f74bc13 CD |
12027 | val = E_MIPS_ARCH_64R2; |
12028 | break; | |
7361da2c AB |
12029 | |
12030 | case bfd_mach_mipsisa32r6: | |
12031 | val = E_MIPS_ARCH_32R6; | |
12032 | break; | |
12033 | ||
12034 | case bfd_mach_mipsisa64r6: | |
12035 | val = E_MIPS_ARCH_64R6; | |
12036 | break; | |
b49e97c9 | 12037 | } |
b49e97c9 TS |
12038 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
12039 | elf_elfheader (abfd)->e_flags |= val; | |
12040 | ||
64543e1a RS |
12041 | } |
12042 | ||
12043 | ||
28dbcedc AM |
12044 | /* Whether to sort relocs output by ld -r or ld --emit-relocs, by r_offset. |
12045 | Don't do so for code sections. We want to keep ordering of HI16/LO16 | |
12046 | as is. On the other hand, elf-eh-frame.c processing requires .eh_frame | |
12047 | relocs to be sorted. */ | |
12048 | ||
12049 | bfd_boolean | |
12050 | _bfd_mips_elf_sort_relocs_p (asection *sec) | |
12051 | { | |
12052 | return (sec->flags & SEC_CODE) == 0; | |
12053 | } | |
12054 | ||
12055 | ||
64543e1a RS |
12056 | /* The final processing done just before writing out a MIPS ELF object |
12057 | file. This gets the MIPS architecture right based on the machine | |
12058 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
12059 | ||
12060 | void | |
9719ad41 RS |
12061 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
12062 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
12063 | { |
12064 | unsigned int i; | |
12065 | Elf_Internal_Shdr **hdrpp; | |
12066 | const char *name; | |
12067 | asection *sec; | |
12068 | ||
12069 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
12070 | is nonzero. This is for compatibility with old objects, which used | |
12071 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
12072 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
12073 | mips_set_isa_flags (abfd); | |
12074 | ||
b49e97c9 TS |
12075 | /* Set the sh_info field for .gptab sections and other appropriate |
12076 | info for each special section. */ | |
12077 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
12078 | i < elf_numsections (abfd); | |
12079 | i++, hdrpp++) | |
12080 | { | |
12081 | switch ((*hdrpp)->sh_type) | |
12082 | { | |
12083 | case SHT_MIPS_MSYM: | |
12084 | case SHT_MIPS_LIBLIST: | |
12085 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
12086 | if (sec != NULL) | |
12087 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12088 | break; | |
12089 | ||
12090 | case SHT_MIPS_GPTAB: | |
12091 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12092 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12093 | BFD_ASSERT (name != NULL | |
0112cd26 | 12094 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
12095 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
12096 | BFD_ASSERT (sec != NULL); | |
12097 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12098 | break; | |
12099 | ||
12100 | case SHT_MIPS_CONTENT: | |
12101 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12102 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12103 | BFD_ASSERT (name != NULL | |
0112cd26 | 12104 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
12105 | sec = bfd_get_section_by_name (abfd, |
12106 | name + sizeof ".MIPS.content" - 1); | |
12107 | BFD_ASSERT (sec != NULL); | |
12108 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12109 | break; | |
12110 | ||
12111 | case SHT_MIPS_SYMBOL_LIB: | |
12112 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
12113 | if (sec != NULL) | |
12114 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12115 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
12116 | if (sec != NULL) | |
12117 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12118 | break; | |
12119 | ||
12120 | case SHT_MIPS_EVENTS: | |
12121 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
12122 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
12123 | BFD_ASSERT (name != NULL); | |
0112cd26 | 12124 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
12125 | sec = bfd_get_section_by_name (abfd, |
12126 | name + sizeof ".MIPS.events" - 1); | |
12127 | else | |
12128 | { | |
0112cd26 | 12129 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
12130 | sec = bfd_get_section_by_name (abfd, |
12131 | (name | |
12132 | + sizeof ".MIPS.post_rel" - 1)); | |
12133 | } | |
12134 | BFD_ASSERT (sec != NULL); | |
12135 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12136 | break; | |
12137 | ||
12138 | } | |
12139 | } | |
12140 | } | |
12141 | \f | |
8dc1a139 | 12142 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
12143 | segments. */ |
12144 | ||
12145 | int | |
a6b96beb AM |
12146 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
12147 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
12148 | { |
12149 | asection *s; | |
12150 | int ret = 0; | |
12151 | ||
12152 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
12153 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12154 | if (s && (s->flags & SEC_LOAD)) | |
12155 | ++ret; | |
12156 | ||
351cdf24 MF |
12157 | /* See if we need a PT_MIPS_ABIFLAGS segment. */ |
12158 | if (bfd_get_section_by_name (abfd, ".MIPS.abiflags")) | |
12159 | ++ret; | |
12160 | ||
b49e97c9 TS |
12161 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
12162 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
12163 | && bfd_get_section_by_name (abfd, | |
12164 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
12165 | ++ret; | |
12166 | ||
12167 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
12168 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
12169 | && bfd_get_section_by_name (abfd, ".dynamic") | |
12170 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
12171 | ++ret; | |
12172 | ||
98c904a8 RS |
12173 | /* Allocate a PT_NULL header in dynamic objects. See |
12174 | _bfd_mips_elf_modify_segment_map for details. */ | |
12175 | if (!SGI_COMPAT (abfd) | |
12176 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
12177 | ++ret; | |
12178 | ||
b49e97c9 TS |
12179 | return ret; |
12180 | } | |
12181 | ||
8dc1a139 | 12182 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 12183 | |
b34976b6 | 12184 | bfd_boolean |
9719ad41 | 12185 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 12186 | struct bfd_link_info *info) |
b49e97c9 TS |
12187 | { |
12188 | asection *s; | |
12189 | struct elf_segment_map *m, **pm; | |
12190 | bfd_size_type amt; | |
12191 | ||
12192 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
12193 | segment. */ | |
12194 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12195 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12196 | { | |
12bd6957 | 12197 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12198 | if (m->p_type == PT_MIPS_REGINFO) |
12199 | break; | |
12200 | if (m == NULL) | |
12201 | { | |
12202 | amt = sizeof *m; | |
9719ad41 | 12203 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12204 | if (m == NULL) |
b34976b6 | 12205 | return FALSE; |
b49e97c9 TS |
12206 | |
12207 | m->p_type = PT_MIPS_REGINFO; | |
12208 | m->count = 1; | |
12209 | m->sections[0] = s; | |
12210 | ||
12211 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 12212 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12213 | while (*pm != NULL |
12214 | && ((*pm)->p_type == PT_PHDR | |
12215 | || (*pm)->p_type == PT_INTERP)) | |
12216 | pm = &(*pm)->next; | |
12217 | ||
12218 | m->next = *pm; | |
12219 | *pm = m; | |
12220 | } | |
12221 | } | |
12222 | ||
351cdf24 MF |
12223 | /* If there is a .MIPS.abiflags section, we need a PT_MIPS_ABIFLAGS |
12224 | segment. */ | |
12225 | s = bfd_get_section_by_name (abfd, ".MIPS.abiflags"); | |
12226 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12227 | { | |
12228 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) | |
12229 | if (m->p_type == PT_MIPS_ABIFLAGS) | |
12230 | break; | |
12231 | if (m == NULL) | |
12232 | { | |
12233 | amt = sizeof *m; | |
12234 | m = bfd_zalloc (abfd, amt); | |
12235 | if (m == NULL) | |
12236 | return FALSE; | |
12237 | ||
12238 | m->p_type = PT_MIPS_ABIFLAGS; | |
12239 | m->count = 1; | |
12240 | m->sections[0] = s; | |
12241 | ||
12242 | /* We want to put it after the PHDR and INTERP segments. */ | |
12243 | pm = &elf_seg_map (abfd); | |
12244 | while (*pm != NULL | |
12245 | && ((*pm)->p_type == PT_PHDR | |
12246 | || (*pm)->p_type == PT_INTERP)) | |
12247 | pm = &(*pm)->next; | |
12248 | ||
12249 | m->next = *pm; | |
12250 | *pm = m; | |
12251 | } | |
12252 | } | |
12253 | ||
b49e97c9 TS |
12254 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but |
12255 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 12256 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 12257 | table. */ |
c1fd6598 AO |
12258 | if (NEWABI_P (abfd) |
12259 | /* On non-IRIX6 new abi, we'll have already created a segment | |
12260 | for this section, so don't create another. I'm not sure this | |
12261 | is not also the case for IRIX 6, but I can't test it right | |
12262 | now. */ | |
12263 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
12264 | { |
12265 | for (s = abfd->sections; s; s = s->next) | |
12266 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
12267 | break; | |
12268 | ||
12269 | if (s) | |
12270 | { | |
12271 | struct elf_segment_map *options_segment; | |
12272 | ||
12bd6957 | 12273 | pm = &elf_seg_map (abfd); |
98a8deaf RS |
12274 | while (*pm != NULL |
12275 | && ((*pm)->p_type == PT_PHDR | |
12276 | || (*pm)->p_type == PT_INTERP)) | |
12277 | pm = &(*pm)->next; | |
b49e97c9 | 12278 | |
8ded5a0f AM |
12279 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
12280 | { | |
12281 | amt = sizeof (struct elf_segment_map); | |
12282 | options_segment = bfd_zalloc (abfd, amt); | |
12283 | options_segment->next = *pm; | |
12284 | options_segment->p_type = PT_MIPS_OPTIONS; | |
12285 | options_segment->p_flags = PF_R; | |
12286 | options_segment->p_flags_valid = TRUE; | |
12287 | options_segment->count = 1; | |
12288 | options_segment->sections[0] = s; | |
12289 | *pm = options_segment; | |
12290 | } | |
b49e97c9 TS |
12291 | } |
12292 | } | |
12293 | else | |
12294 | { | |
12295 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
12296 | { | |
12297 | /* If there are .dynamic and .mdebug sections, we make a room | |
12298 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
12299 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
12300 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
12301 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
12302 | { | |
12bd6957 | 12303 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12304 | if (m->p_type == PT_MIPS_RTPROC) |
12305 | break; | |
12306 | if (m == NULL) | |
12307 | { | |
12308 | amt = sizeof *m; | |
9719ad41 | 12309 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12310 | if (m == NULL) |
b34976b6 | 12311 | return FALSE; |
b49e97c9 TS |
12312 | |
12313 | m->p_type = PT_MIPS_RTPROC; | |
12314 | ||
12315 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
12316 | if (s == NULL) | |
12317 | { | |
12318 | m->count = 0; | |
12319 | m->p_flags = 0; | |
12320 | m->p_flags_valid = 1; | |
12321 | } | |
12322 | else | |
12323 | { | |
12324 | m->count = 1; | |
12325 | m->sections[0] = s; | |
12326 | } | |
12327 | ||
12328 | /* We want to put it after the DYNAMIC segment. */ | |
12bd6957 | 12329 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12330 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) |
12331 | pm = &(*pm)->next; | |
12332 | if (*pm != NULL) | |
12333 | pm = &(*pm)->next; | |
12334 | ||
12335 | m->next = *pm; | |
12336 | *pm = m; | |
12337 | } | |
12338 | } | |
12339 | } | |
8dc1a139 | 12340 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
12341 | .dynstr, .dynsym, and .hash sections, and everything in |
12342 | between. */ | |
12bd6957 | 12343 | for (pm = &elf_seg_map (abfd); *pm != NULL; |
b49e97c9 TS |
12344 | pm = &(*pm)->next) |
12345 | if ((*pm)->p_type == PT_DYNAMIC) | |
12346 | break; | |
12347 | m = *pm; | |
f6f62d6f RS |
12348 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
12349 | glibc's dynamic linker has traditionally derived the number of | |
12350 | tags from the p_filesz field, and sometimes allocates stack | |
12351 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
12352 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
12353 | other sections can also make life hard for the prelinker, | |
12354 | which might move one of the other sections to a different | |
12355 | PT_LOAD segment. */ | |
12356 | if (SGI_COMPAT (abfd) | |
12357 | && m != NULL | |
12358 | && m->count == 1 | |
12359 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
12360 | { |
12361 | static const char *sec_names[] = | |
12362 | { | |
12363 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
12364 | }; | |
12365 | bfd_vma low, high; | |
12366 | unsigned int i, c; | |
12367 | struct elf_segment_map *n; | |
12368 | ||
792b4a53 | 12369 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
12370 | high = 0; |
12371 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
12372 | { | |
12373 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
12374 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12375 | { | |
12376 | bfd_size_type sz; | |
12377 | ||
12378 | if (low > s->vma) | |
12379 | low = s->vma; | |
eea6121a | 12380 | sz = s->size; |
b49e97c9 TS |
12381 | if (high < s->vma + sz) |
12382 | high = s->vma + sz; | |
12383 | } | |
12384 | } | |
12385 | ||
12386 | c = 0; | |
12387 | for (s = abfd->sections; s != NULL; s = s->next) | |
12388 | if ((s->flags & SEC_LOAD) != 0 | |
12389 | && s->vma >= low | |
eea6121a | 12390 | && s->vma + s->size <= high) |
b49e97c9 TS |
12391 | ++c; |
12392 | ||
12393 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 12394 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 12395 | if (n == NULL) |
b34976b6 | 12396 | return FALSE; |
b49e97c9 TS |
12397 | *n = *m; |
12398 | n->count = c; | |
12399 | ||
12400 | i = 0; | |
12401 | for (s = abfd->sections; s != NULL; s = s->next) | |
12402 | { | |
12403 | if ((s->flags & SEC_LOAD) != 0 | |
12404 | && s->vma >= low | |
eea6121a | 12405 | && s->vma + s->size <= high) |
b49e97c9 TS |
12406 | { |
12407 | n->sections[i] = s; | |
12408 | ++i; | |
12409 | } | |
12410 | } | |
12411 | ||
12412 | *pm = n; | |
12413 | } | |
12414 | } | |
12415 | ||
98c904a8 RS |
12416 | /* Allocate a spare program header in dynamic objects so that tools |
12417 | like the prelinker can add an extra PT_LOAD entry. | |
12418 | ||
12419 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
12420 | standard procedure is to move the first (read-only) sections into | |
12421 | the new (writable) segment. However, the MIPS ABI requires | |
12422 | .dynamic to be in a read-only segment, and the section will often | |
12423 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
12424 | ||
12425 | Although the prelinker could in principle move .dynamic to a | |
12426 | writable segment, it seems better to allocate a spare program | |
12427 | header instead, and avoid the need to move any sections. | |
12428 | There is a long tradition of allocating spare dynamic tags, | |
12429 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
12430 | extension. |
12431 | ||
12432 | If INFO is NULL, we may be copying an already prelinked binary | |
12433 | with objcopy or strip, so do not add this header. */ | |
12434 | if (info != NULL | |
12435 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
12436 | && bfd_get_section_by_name (abfd, ".dynamic")) |
12437 | { | |
12bd6957 | 12438 | for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) |
98c904a8 RS |
12439 | if ((*pm)->p_type == PT_NULL) |
12440 | break; | |
12441 | if (*pm == NULL) | |
12442 | { | |
12443 | m = bfd_zalloc (abfd, sizeof (*m)); | |
12444 | if (m == NULL) | |
12445 | return FALSE; | |
12446 | ||
12447 | m->p_type = PT_NULL; | |
12448 | *pm = m; | |
12449 | } | |
12450 | } | |
12451 | ||
b34976b6 | 12452 | return TRUE; |
b49e97c9 TS |
12453 | } |
12454 | \f | |
12455 | /* Return the section that should be marked against GC for a given | |
12456 | relocation. */ | |
12457 | ||
12458 | asection * | |
9719ad41 | 12459 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 12460 | struct bfd_link_info *info, |
9719ad41 RS |
12461 | Elf_Internal_Rela *rel, |
12462 | struct elf_link_hash_entry *h, | |
12463 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
12464 | { |
12465 | /* ??? Do mips16 stub sections need to be handled special? */ | |
12466 | ||
12467 | if (h != NULL) | |
07adf181 AM |
12468 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
12469 | { | |
12470 | case R_MIPS_GNU_VTINHERIT: | |
12471 | case R_MIPS_GNU_VTENTRY: | |
12472 | return NULL; | |
12473 | } | |
b49e97c9 | 12474 | |
07adf181 | 12475 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
12476 | } |
12477 | ||
351cdf24 MF |
12478 | /* Prevent .MIPS.abiflags from being discarded with --gc-sections. */ |
12479 | ||
12480 | bfd_boolean | |
12481 | _bfd_mips_elf_gc_mark_extra_sections (struct bfd_link_info *info, | |
12482 | elf_gc_mark_hook_fn gc_mark_hook) | |
12483 | { | |
12484 | bfd *sub; | |
12485 | ||
12486 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); | |
12487 | ||
12488 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
12489 | { | |
12490 | asection *o; | |
12491 | ||
12492 | if (! is_mips_elf (sub)) | |
12493 | continue; | |
12494 | ||
12495 | for (o = sub->sections; o != NULL; o = o->next) | |
12496 | if (!o->gc_mark | |
12497 | && MIPS_ELF_ABIFLAGS_SECTION_NAME_P | |
12498 | (bfd_get_section_name (sub, o))) | |
12499 | { | |
12500 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
12501 | return FALSE; | |
12502 | } | |
12503 | } | |
12504 | ||
12505 | return TRUE; | |
12506 | } | |
b49e97c9 TS |
12507 | \f |
12508 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
12509 | hiding the old indirect symbol. Process additional relocation | |
12510 | information. Also called for weakdefs, in which case we just let | |
12511 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
12512 | ||
12513 | void | |
fcfa13d2 | 12514 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
12515 | struct elf_link_hash_entry *dir, |
12516 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
12517 | { |
12518 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
12519 | ||
fcfa13d2 | 12520 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 12521 | |
861fb55a DJ |
12522 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
12523 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
12524 | /* Any absolute non-dynamic relocations against an indirect or weak | |
12525 | definition will be against the target symbol. */ | |
12526 | if (indmips->has_static_relocs) | |
12527 | dirmips->has_static_relocs = TRUE; | |
12528 | ||
b49e97c9 TS |
12529 | if (ind->root.type != bfd_link_hash_indirect) |
12530 | return; | |
12531 | ||
b49e97c9 TS |
12532 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
12533 | if (indmips->readonly_reloc) | |
b34976b6 | 12534 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 12535 | if (indmips->no_fn_stub) |
b34976b6 | 12536 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
12537 | if (indmips->fn_stub) |
12538 | { | |
12539 | dirmips->fn_stub = indmips->fn_stub; | |
12540 | indmips->fn_stub = NULL; | |
12541 | } | |
12542 | if (indmips->need_fn_stub) | |
12543 | { | |
12544 | dirmips->need_fn_stub = TRUE; | |
12545 | indmips->need_fn_stub = FALSE; | |
12546 | } | |
12547 | if (indmips->call_stub) | |
12548 | { | |
12549 | dirmips->call_stub = indmips->call_stub; | |
12550 | indmips->call_stub = NULL; | |
12551 | } | |
12552 | if (indmips->call_fp_stub) | |
12553 | { | |
12554 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
12555 | indmips->call_fp_stub = NULL; | |
12556 | } | |
634835ae RS |
12557 | if (indmips->global_got_area < dirmips->global_got_area) |
12558 | dirmips->global_got_area = indmips->global_got_area; | |
12559 | if (indmips->global_got_area < GGA_NONE) | |
12560 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
12561 | if (indmips->has_nonpic_branches) |
12562 | dirmips->has_nonpic_branches = TRUE; | |
b49e97c9 | 12563 | } |
b49e97c9 | 12564 | \f |
d01414a5 TS |
12565 | #define PDR_SIZE 32 |
12566 | ||
b34976b6 | 12567 | bfd_boolean |
9719ad41 RS |
12568 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
12569 | struct bfd_link_info *info) | |
d01414a5 TS |
12570 | { |
12571 | asection *o; | |
b34976b6 | 12572 | bfd_boolean ret = FALSE; |
d01414a5 TS |
12573 | unsigned char *tdata; |
12574 | size_t i, skip; | |
12575 | ||
12576 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
12577 | if (! o) | |
b34976b6 | 12578 | return FALSE; |
eea6121a | 12579 | if (o->size == 0) |
b34976b6 | 12580 | return FALSE; |
eea6121a | 12581 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 12582 | return FALSE; |
d01414a5 TS |
12583 | if (o->output_section != NULL |
12584 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 12585 | return FALSE; |
d01414a5 | 12586 | |
eea6121a | 12587 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 12588 | if (! tdata) |
b34976b6 | 12589 | return FALSE; |
d01414a5 | 12590 | |
9719ad41 | 12591 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 12592 | info->keep_memory); |
d01414a5 TS |
12593 | if (!cookie->rels) |
12594 | { | |
12595 | free (tdata); | |
b34976b6 | 12596 | return FALSE; |
d01414a5 TS |
12597 | } |
12598 | ||
12599 | cookie->rel = cookie->rels; | |
12600 | cookie->relend = cookie->rels + o->reloc_count; | |
12601 | ||
eea6121a | 12602 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 12603 | { |
c152c796 | 12604 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
12605 | { |
12606 | tdata[i] = 1; | |
12607 | skip ++; | |
12608 | } | |
12609 | } | |
12610 | ||
12611 | if (skip != 0) | |
12612 | { | |
f0abc2a1 | 12613 | mips_elf_section_data (o)->u.tdata = tdata; |
e034b2cc MR |
12614 | if (o->rawsize == 0) |
12615 | o->rawsize = o->size; | |
eea6121a | 12616 | o->size -= skip * PDR_SIZE; |
b34976b6 | 12617 | ret = TRUE; |
d01414a5 TS |
12618 | } |
12619 | else | |
12620 | free (tdata); | |
12621 | ||
12622 | if (! info->keep_memory) | |
12623 | free (cookie->rels); | |
12624 | ||
12625 | return ret; | |
12626 | } | |
12627 | ||
b34976b6 | 12628 | bfd_boolean |
9719ad41 | 12629 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
12630 | { |
12631 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
12632 | return TRUE; |
12633 | return FALSE; | |
53bfd6b4 | 12634 | } |
d01414a5 | 12635 | |
b34976b6 | 12636 | bfd_boolean |
c7b8f16e JB |
12637 | _bfd_mips_elf_write_section (bfd *output_bfd, |
12638 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
07d6d2b8 | 12639 | asection *sec, bfd_byte *contents) |
d01414a5 TS |
12640 | { |
12641 | bfd_byte *to, *from, *end; | |
12642 | int i; | |
12643 | ||
12644 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 12645 | return FALSE; |
d01414a5 | 12646 | |
f0abc2a1 | 12647 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 12648 | return FALSE; |
d01414a5 TS |
12649 | |
12650 | to = contents; | |
eea6121a | 12651 | end = contents + sec->size; |
d01414a5 TS |
12652 | for (from = contents, i = 0; |
12653 | from < end; | |
12654 | from += PDR_SIZE, i++) | |
12655 | { | |
f0abc2a1 | 12656 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
12657 | continue; |
12658 | if (to != from) | |
12659 | memcpy (to, from, PDR_SIZE); | |
12660 | to += PDR_SIZE; | |
12661 | } | |
12662 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 12663 | sec->output_offset, sec->size); |
b34976b6 | 12664 | return TRUE; |
d01414a5 | 12665 | } |
53bfd6b4 | 12666 | \f |
df58fc94 RS |
12667 | /* microMIPS code retains local labels for linker relaxation. Omit them |
12668 | from output by default for clarity. */ | |
12669 | ||
12670 | bfd_boolean | |
12671 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) | |
12672 | { | |
12673 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
12674 | } | |
12675 | ||
b49e97c9 TS |
12676 | /* MIPS ELF uses a special find_nearest_line routine in order the |
12677 | handle the ECOFF debugging information. */ | |
12678 | ||
12679 | struct mips_elf_find_line | |
12680 | { | |
12681 | struct ecoff_debug_info d; | |
12682 | struct ecoff_find_line i; | |
12683 | }; | |
12684 | ||
b34976b6 | 12685 | bfd_boolean |
fb167eb2 AM |
12686 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asymbol **symbols, |
12687 | asection *section, bfd_vma offset, | |
9719ad41 RS |
12688 | const char **filename_ptr, |
12689 | const char **functionname_ptr, | |
fb167eb2 AM |
12690 | unsigned int *line_ptr, |
12691 | unsigned int *discriminator_ptr) | |
b49e97c9 TS |
12692 | { |
12693 | asection *msec; | |
12694 | ||
fb167eb2 | 12695 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
b49e97c9 | 12696 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
12697 | line_ptr, discriminator_ptr, |
12698 | dwarf_debug_sections, | |
12699 | ABI_64_P (abfd) ? 8 : 0, | |
46d09186 NC |
12700 | &elf_tdata (abfd)->dwarf2_find_line_info) |
12701 | || _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset, | |
12702 | filename_ptr, functionname_ptr, | |
12703 | line_ptr)) | |
12704 | { | |
12705 | /* PR 22789: If the function name or filename was not found through | |
12706 | the debug information, then try an ordinary lookup instead. */ | |
12707 | if ((functionname_ptr != NULL && *functionname_ptr == NULL) | |
12708 | || (filename_ptr != NULL && *filename_ptr == NULL)) | |
12709 | { | |
12710 | /* Do not override already discovered names. */ | |
12711 | if (functionname_ptr != NULL && *functionname_ptr != NULL) | |
12712 | functionname_ptr = NULL; | |
b49e97c9 | 12713 | |
46d09186 NC |
12714 | if (filename_ptr != NULL && *filename_ptr != NULL) |
12715 | filename_ptr = NULL; | |
12716 | ||
12717 | _bfd_elf_find_function (abfd, symbols, section, offset, | |
12718 | filename_ptr, functionname_ptr); | |
12719 | } | |
12720 | ||
12721 | return TRUE; | |
12722 | } | |
b49e97c9 TS |
12723 | |
12724 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
12725 | if (msec != NULL) | |
12726 | { | |
12727 | flagword origflags; | |
12728 | struct mips_elf_find_line *fi; | |
12729 | const struct ecoff_debug_swap * const swap = | |
12730 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
12731 | ||
12732 | /* If we are called during a link, mips_elf_final_link may have | |
12733 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
12734 | if appropriate (which it normally will be). */ | |
12735 | origflags = msec->flags; | |
12736 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
12737 | msec->flags |= SEC_HAS_CONTENTS; | |
12738 | ||
698600e4 | 12739 | fi = mips_elf_tdata (abfd)->find_line_info; |
b49e97c9 TS |
12740 | if (fi == NULL) |
12741 | { | |
12742 | bfd_size_type external_fdr_size; | |
12743 | char *fraw_src; | |
12744 | char *fraw_end; | |
12745 | struct fdr *fdr_ptr; | |
12746 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
12747 | ||
9719ad41 | 12748 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
12749 | if (fi == NULL) |
12750 | { | |
12751 | msec->flags = origflags; | |
b34976b6 | 12752 | return FALSE; |
b49e97c9 TS |
12753 | } |
12754 | ||
12755 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
12756 | { | |
12757 | msec->flags = origflags; | |
b34976b6 | 12758 | return FALSE; |
b49e97c9 TS |
12759 | } |
12760 | ||
12761 | /* Swap in the FDR information. */ | |
12762 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 12763 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
12764 | if (fi->d.fdr == NULL) |
12765 | { | |
12766 | msec->flags = origflags; | |
b34976b6 | 12767 | return FALSE; |
b49e97c9 TS |
12768 | } |
12769 | external_fdr_size = swap->external_fdr_size; | |
12770 | fdr_ptr = fi->d.fdr; | |
12771 | fraw_src = (char *) fi->d.external_fdr; | |
12772 | fraw_end = (fraw_src | |
12773 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
12774 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 12775 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 | 12776 | |
698600e4 | 12777 | mips_elf_tdata (abfd)->find_line_info = fi; |
b49e97c9 TS |
12778 | |
12779 | /* Note that we don't bother to ever free this information. | |
07d6d2b8 AM |
12780 | find_nearest_line is either called all the time, as in |
12781 | objdump -l, so the information should be saved, or it is | |
12782 | rarely called, as in ld error messages, so the memory | |
12783 | wasted is unimportant. Still, it would probably be a | |
12784 | good idea for free_cached_info to throw it away. */ | |
b49e97c9 TS |
12785 | } |
12786 | ||
12787 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
12788 | &fi->i, filename_ptr, functionname_ptr, | |
12789 | line_ptr)) | |
12790 | { | |
12791 | msec->flags = origflags; | |
b34976b6 | 12792 | return TRUE; |
b49e97c9 TS |
12793 | } |
12794 | ||
12795 | msec->flags = origflags; | |
12796 | } | |
12797 | ||
12798 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
12799 | ||
fb167eb2 | 12800 | return _bfd_elf_find_nearest_line (abfd, symbols, section, offset, |
b49e97c9 | 12801 | filename_ptr, functionname_ptr, |
fb167eb2 | 12802 | line_ptr, discriminator_ptr); |
b49e97c9 | 12803 | } |
4ab527b0 FF |
12804 | |
12805 | bfd_boolean | |
12806 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
12807 | const char **filename_ptr, | |
12808 | const char **functionname_ptr, | |
12809 | unsigned int *line_ptr) | |
12810 | { | |
12811 | bfd_boolean found; | |
12812 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
12813 | functionname_ptr, line_ptr, | |
12814 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
12815 | return found; | |
12816 | } | |
12817 | ||
b49e97c9 TS |
12818 | \f |
12819 | /* When are writing out the .options or .MIPS.options section, | |
12820 | remember the bytes we are writing out, so that we can install the | |
12821 | GP value in the section_processing routine. */ | |
12822 | ||
b34976b6 | 12823 | bfd_boolean |
9719ad41 RS |
12824 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
12825 | const void *location, | |
12826 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 12827 | { |
cc2e31b9 | 12828 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
12829 | { |
12830 | bfd_byte *c; | |
12831 | ||
12832 | if (elf_section_data (section) == NULL) | |
12833 | { | |
12834 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 12835 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 12836 | if (elf_section_data (section) == NULL) |
b34976b6 | 12837 | return FALSE; |
b49e97c9 | 12838 | } |
f0abc2a1 | 12839 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
12840 | if (c == NULL) |
12841 | { | |
eea6121a | 12842 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 12843 | if (c == NULL) |
b34976b6 | 12844 | return FALSE; |
f0abc2a1 | 12845 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
12846 | } |
12847 | ||
9719ad41 | 12848 | memcpy (c + offset, location, count); |
b49e97c9 TS |
12849 | } |
12850 | ||
12851 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
12852 | count); | |
12853 | } | |
12854 | ||
12855 | /* This is almost identical to bfd_generic_get_... except that some | |
12856 | MIPS relocations need to be handled specially. Sigh. */ | |
12857 | ||
12858 | bfd_byte * | |
9719ad41 RS |
12859 | _bfd_elf_mips_get_relocated_section_contents |
12860 | (bfd *abfd, | |
12861 | struct bfd_link_info *link_info, | |
12862 | struct bfd_link_order *link_order, | |
12863 | bfd_byte *data, | |
12864 | bfd_boolean relocatable, | |
12865 | asymbol **symbols) | |
b49e97c9 TS |
12866 | { |
12867 | /* Get enough memory to hold the stuff */ | |
12868 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
12869 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 12870 | bfd_size_type sz; |
b49e97c9 TS |
12871 | |
12872 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
12873 | arelent **reloc_vector = NULL; | |
12874 | long reloc_count; | |
12875 | ||
12876 | if (reloc_size < 0) | |
12877 | goto error_return; | |
12878 | ||
9719ad41 | 12879 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
12880 | if (reloc_vector == NULL && reloc_size != 0) |
12881 | goto error_return; | |
12882 | ||
12883 | /* read in the section */ | |
eea6121a AM |
12884 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
12885 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
12886 | goto error_return; |
12887 | ||
b49e97c9 TS |
12888 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
12889 | input_section, | |
12890 | reloc_vector, | |
12891 | symbols); | |
12892 | if (reloc_count < 0) | |
12893 | goto error_return; | |
12894 | ||
12895 | if (reloc_count > 0) | |
12896 | { | |
12897 | arelent **parent; | |
12898 | /* for mips */ | |
12899 | int gp_found; | |
12900 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
12901 | ||
12902 | { | |
12903 | struct bfd_hash_entry *h; | |
12904 | struct bfd_link_hash_entry *lh; | |
12905 | /* Skip all this stuff if we aren't mixing formats. */ | |
12906 | if (abfd && input_bfd | |
12907 | && abfd->xvec == input_bfd->xvec) | |
12908 | lh = 0; | |
12909 | else | |
12910 | { | |
b34976b6 | 12911 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
12912 | lh = (struct bfd_link_hash_entry *) h; |
12913 | } | |
12914 | lookup: | |
12915 | if (lh) | |
12916 | { | |
12917 | switch (lh->type) | |
12918 | { | |
12919 | case bfd_link_hash_undefined: | |
12920 | case bfd_link_hash_undefweak: | |
12921 | case bfd_link_hash_common: | |
12922 | gp_found = 0; | |
12923 | break; | |
12924 | case bfd_link_hash_defined: | |
12925 | case bfd_link_hash_defweak: | |
12926 | gp_found = 1; | |
12927 | gp = lh->u.def.value; | |
12928 | break; | |
12929 | case bfd_link_hash_indirect: | |
12930 | case bfd_link_hash_warning: | |
12931 | lh = lh->u.i.link; | |
12932 | /* @@FIXME ignoring warning for now */ | |
12933 | goto lookup; | |
12934 | case bfd_link_hash_new: | |
12935 | default: | |
12936 | abort (); | |
12937 | } | |
12938 | } | |
12939 | else | |
12940 | gp_found = 0; | |
12941 | } | |
12942 | /* end mips */ | |
9719ad41 | 12943 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 12944 | { |
9719ad41 | 12945 | char *error_message = NULL; |
b49e97c9 TS |
12946 | bfd_reloc_status_type r; |
12947 | ||
12948 | /* Specific to MIPS: Deal with relocation types that require | |
12949 | knowing the gp of the output bfd. */ | |
12950 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 12951 | |
8236346f EC |
12952 | /* If we've managed to find the gp and have a special |
12953 | function for the relocation then go ahead, else default | |
12954 | to the generic handling. */ | |
12955 | if (gp_found | |
12956 | && (*parent)->howto->special_function | |
12957 | == _bfd_mips_elf32_gprel16_reloc) | |
12958 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
12959 | input_section, relocatable, | |
12960 | data, gp); | |
12961 | else | |
86324f90 | 12962 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
12963 | input_section, |
12964 | relocatable ? abfd : NULL, | |
12965 | &error_message); | |
b49e97c9 | 12966 | |
1049f94e | 12967 | if (relocatable) |
b49e97c9 TS |
12968 | { |
12969 | asection *os = input_section->output_section; | |
12970 | ||
12971 | /* A partial link, so keep the relocs */ | |
12972 | os->orelocation[os->reloc_count] = *parent; | |
12973 | os->reloc_count++; | |
12974 | } | |
12975 | ||
12976 | if (r != bfd_reloc_ok) | |
12977 | { | |
12978 | switch (r) | |
12979 | { | |
12980 | case bfd_reloc_undefined: | |
1a72702b AM |
12981 | (*link_info->callbacks->undefined_symbol) |
12982 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
12983 | input_bfd, input_section, (*parent)->address, TRUE); | |
b49e97c9 TS |
12984 | break; |
12985 | case bfd_reloc_dangerous: | |
9719ad41 | 12986 | BFD_ASSERT (error_message != NULL); |
1a72702b AM |
12987 | (*link_info->callbacks->reloc_dangerous) |
12988 | (link_info, error_message, | |
12989 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
12990 | break; |
12991 | case bfd_reloc_overflow: | |
1a72702b AM |
12992 | (*link_info->callbacks->reloc_overflow) |
12993 | (link_info, NULL, | |
12994 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
12995 | (*parent)->howto->name, (*parent)->addend, | |
12996 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
12997 | break; |
12998 | case bfd_reloc_outofrange: | |
12999 | default: | |
13000 | abort (); | |
13001 | break; | |
13002 | } | |
13003 | ||
13004 | } | |
13005 | } | |
13006 | } | |
13007 | if (reloc_vector != NULL) | |
13008 | free (reloc_vector); | |
13009 | return data; | |
13010 | ||
13011 | error_return: | |
13012 | if (reloc_vector != NULL) | |
13013 | free (reloc_vector); | |
13014 | return NULL; | |
13015 | } | |
13016 | \f | |
df58fc94 RS |
13017 | static bfd_boolean |
13018 | mips_elf_relax_delete_bytes (bfd *abfd, | |
13019 | asection *sec, bfd_vma addr, int count) | |
13020 | { | |
13021 | Elf_Internal_Shdr *symtab_hdr; | |
13022 | unsigned int sec_shndx; | |
13023 | bfd_byte *contents; | |
13024 | Elf_Internal_Rela *irel, *irelend; | |
13025 | Elf_Internal_Sym *isym; | |
13026 | Elf_Internal_Sym *isymend; | |
13027 | struct elf_link_hash_entry **sym_hashes; | |
13028 | struct elf_link_hash_entry **end_hashes; | |
13029 | struct elf_link_hash_entry **start_hashes; | |
13030 | unsigned int symcount; | |
13031 | ||
13032 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
13033 | contents = elf_section_data (sec)->this_hdr.contents; | |
13034 | ||
13035 | irel = elf_section_data (sec)->relocs; | |
13036 | irelend = irel + sec->reloc_count; | |
13037 | ||
13038 | /* Actually delete the bytes. */ | |
13039 | memmove (contents + addr, contents + addr + count, | |
13040 | (size_t) (sec->size - addr - count)); | |
13041 | sec->size -= count; | |
13042 | ||
13043 | /* Adjust all the relocs. */ | |
13044 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
13045 | { | |
13046 | /* Get the new reloc address. */ | |
13047 | if (irel->r_offset > addr) | |
13048 | irel->r_offset -= count; | |
13049 | } | |
13050 | ||
13051 | BFD_ASSERT (addr % 2 == 0); | |
13052 | BFD_ASSERT (count % 2 == 0); | |
13053 | ||
13054 | /* Adjust the local symbols defined in this section. */ | |
13055 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13056 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
13057 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 13058 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
13059 | isym->st_value -= count; |
13060 | ||
13061 | /* Now adjust the global symbols defined in this section. */ | |
13062 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
13063 | - symtab_hdr->sh_info); | |
13064 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
13065 | end_hashes = sym_hashes + symcount; | |
13066 | ||
13067 | for (; sym_hashes < end_hashes; sym_hashes++) | |
13068 | { | |
13069 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
13070 | ||
13071 | if ((sym_hash->root.type == bfd_link_hash_defined | |
13072 | || sym_hash->root.type == bfd_link_hash_defweak) | |
13073 | && sym_hash->root.u.def.section == sec) | |
13074 | { | |
2309ddf2 | 13075 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 13076 | |
df58fc94 RS |
13077 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
13078 | value &= MINUS_TWO; | |
13079 | if (value > addr) | |
13080 | sym_hash->root.u.def.value -= count; | |
13081 | } | |
13082 | } | |
13083 | ||
13084 | return TRUE; | |
13085 | } | |
13086 | ||
13087 | ||
13088 | /* Opcodes needed for microMIPS relaxation as found in | |
13089 | opcodes/micromips-opc.c. */ | |
13090 | ||
13091 | struct opcode_descriptor { | |
13092 | unsigned long match; | |
13093 | unsigned long mask; | |
13094 | }; | |
13095 | ||
13096 | /* The $ra register aka $31. */ | |
13097 | ||
13098 | #define RA 31 | |
13099 | ||
13100 | /* 32-bit instruction format register fields. */ | |
13101 | ||
13102 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
13103 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
13104 | ||
13105 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
13106 | ||
13107 | #define OP16_VALID_REG(r) \ | |
13108 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
13109 | ||
13110 | ||
13111 | /* 32-bit and 16-bit branches. */ | |
13112 | ||
13113 | static const struct opcode_descriptor b_insns_32[] = { | |
13114 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
13115 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
13116 | { 0, 0 } /* End marker for find_match(). */ | |
13117 | }; | |
13118 | ||
13119 | static const struct opcode_descriptor bc_insn_32 = | |
13120 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
13121 | ||
13122 | static const struct opcode_descriptor bz_insn_32 = | |
13123 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
13124 | ||
13125 | static const struct opcode_descriptor bzal_insn_32 = | |
13126 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
13127 | ||
13128 | static const struct opcode_descriptor beq_insn_32 = | |
13129 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
13130 | ||
13131 | static const struct opcode_descriptor b_insn_16 = | |
13132 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
13133 | ||
13134 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 13135 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
13136 | |
13137 | ||
13138 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
13139 | ||
13140 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
13141 | eq and second the ne. This convention is used when replacing a | |
13142 | 32-bit BEQ/BNE with the 16-bit version. */ | |
13143 | ||
13144 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
13145 | ||
13146 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
13147 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
13148 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
13149 | { 0, 0 } /* End marker for find_match(). */ | |
13150 | }; | |
13151 | ||
13152 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
13153 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
13154 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
13155 | { 0, 0 } /* End marker for find_match(). */ | |
13156 | }; | |
13157 | ||
13158 | static const struct opcode_descriptor bzc_insns_32[] = { | |
13159 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
13160 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
13161 | { 0, 0 } /* End marker for find_match(). */ | |
13162 | }; | |
13163 | ||
13164 | static const struct opcode_descriptor bz_insns_16[] = { | |
13165 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
13166 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
13167 | { 0, 0 } /* End marker for find_match(). */ | |
13168 | }; | |
13169 | ||
13170 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
13171 | ||
e67f83e5 | 13172 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0xf) + 2) |
eb6b0cf4 | 13173 | #define BZ16_REG_FIELD(r) (((r) & 7) << 7) |
df58fc94 RS |
13174 | |
13175 | ||
13176 | /* 32-bit instructions with a delay slot. */ | |
13177 | ||
13178 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
13179 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
13180 | ||
13181 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
13182 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
13183 | ||
13184 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
13185 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
13186 | ||
13187 | static const struct opcode_descriptor j_insn_32 = | |
13188 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
13189 | ||
13190 | static const struct opcode_descriptor jalr_insn_32 = | |
13191 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
13192 | ||
13193 | /* This table can be compacted, because no opcode replacement is made. */ | |
13194 | ||
13195 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
13196 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
13197 | ||
13198 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
13199 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
13200 | ||
13201 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
13202 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
13203 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
13204 | { 0, 0 } /* End marker for find_match(). */ | |
13205 | }; | |
13206 | ||
13207 | /* This table can be compacted, because no opcode replacement is made. */ | |
13208 | ||
13209 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
13210 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
13211 | ||
13212 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
13213 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
13214 | { 0, 0 } /* End marker for find_match(). */ | |
13215 | }; | |
13216 | ||
13217 | ||
13218 | /* 16-bit instructions with a delay slot. */ | |
13219 | ||
13220 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
13221 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
13222 | ||
13223 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
13224 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
13225 | ||
13226 | static const struct opcode_descriptor jr_insn_16 = | |
13227 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
13228 | ||
13229 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
13230 | ||
13231 | /* This table can be compacted, because no opcode replacement is made. */ | |
13232 | ||
13233 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
13234 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
13235 | ||
13236 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
13237 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
13238 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
13239 | { 0, 0 } /* End marker for find_match(). */ | |
13240 | }; | |
13241 | ||
13242 | ||
13243 | /* LUI instruction. */ | |
13244 | ||
13245 | static const struct opcode_descriptor lui_insn = | |
13246 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
13247 | ||
13248 | ||
13249 | /* ADDIU instruction. */ | |
13250 | ||
13251 | static const struct opcode_descriptor addiu_insn = | |
13252 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
13253 | ||
13254 | static const struct opcode_descriptor addiupc_insn = | |
13255 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
13256 | ||
13257 | #define ADDIUPC_REG_FIELD(r) \ | |
13258 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
13259 | ||
13260 | ||
13261 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
13262 | ||
13263 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
13264 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
13265 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
13266 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
13267 | ||
13268 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
13269 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
13270 | ||
13271 | static const struct opcode_descriptor move_insns_32[] = { | |
df58fc94 | 13272 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ |
40fc1451 | 13273 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ |
df58fc94 RS |
13274 | { 0, 0 } /* End marker for find_match(). */ |
13275 | }; | |
13276 | ||
13277 | static const struct opcode_descriptor move_insn_16 = | |
13278 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
13279 | ||
13280 | ||
13281 | /* NOP instructions. */ | |
13282 | ||
13283 | static const struct opcode_descriptor nop_insn_32 = | |
13284 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
13285 | ||
13286 | static const struct opcode_descriptor nop_insn_16 = | |
13287 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
13288 | ||
13289 | ||
13290 | /* Instruction match support. */ | |
13291 | ||
13292 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
13293 | ||
13294 | static int | |
13295 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
13296 | { | |
13297 | unsigned long indx; | |
13298 | ||
13299 | for (indx = 0; insn[indx].mask != 0; indx++) | |
13300 | if (MATCH (opcode, insn[indx])) | |
13301 | return indx; | |
13302 | ||
13303 | return -1; | |
13304 | } | |
13305 | ||
13306 | ||
13307 | /* Branch and delay slot decoding support. */ | |
13308 | ||
13309 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
13310 | return the minimum length of its delay slot, otherwise return 0. | |
13311 | Non-zero results are not definitive as we might be checking against | |
13312 | the second half of another instruction. */ | |
13313 | ||
13314 | static int | |
13315 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
13316 | { | |
13317 | unsigned long opcode; | |
13318 | int bdsize; | |
13319 | ||
13320 | opcode = bfd_get_16 (abfd, ptr); | |
13321 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
13322 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
13323 | bdsize = 4; | |
13324 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
13325 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
13326 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
13327 | bdsize = 2; | |
13328 | else | |
13329 | /* No delay slot. */ | |
13330 | bdsize = 0; | |
13331 | ||
13332 | return bdsize; | |
13333 | } | |
13334 | ||
13335 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
13336 | return the minimum length of its delay slot, otherwise return 0. | |
13337 | Non-zero results are not definitive as we might be checking against | |
13338 | the second half of another instruction. */ | |
13339 | ||
13340 | static int | |
13341 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
13342 | { | |
13343 | unsigned long opcode; | |
13344 | int bdsize; | |
13345 | ||
d21911ea | 13346 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13347 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
13348 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
13349 | bdsize = 4; | |
13350 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
13351 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
13352 | bdsize = 2; | |
13353 | else | |
13354 | /* No delay slot. */ | |
13355 | bdsize = 0; | |
13356 | ||
13357 | return bdsize; | |
13358 | } | |
13359 | ||
13360 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
13361 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
13362 | ||
13363 | static bfd_boolean | |
13364 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) | |
13365 | { | |
13366 | unsigned long opcode; | |
13367 | ||
13368 | opcode = bfd_get_16 (abfd, ptr); | |
13369 | if (MATCH (opcode, b_insn_16) | |
13370 | /* B16 */ | |
13371 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
13372 | /* JR16 */ | |
13373 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
13374 | /* BEQZ16, BNEZ16 */ | |
13375 | || (MATCH (opcode, jalr_insn_16_bd32) | |
13376 | /* JALR16 */ | |
13377 | && reg != JR16_REG (opcode) && reg != RA)) | |
13378 | return TRUE; | |
13379 | ||
13380 | return FALSE; | |
13381 | } | |
13382 | ||
13383 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
13384 | then return TRUE, otherwise FALSE. */ | |
13385 | ||
f41e5fcc | 13386 | static bfd_boolean |
df58fc94 RS |
13387 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
13388 | { | |
13389 | unsigned long opcode; | |
13390 | ||
d21911ea | 13391 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13392 | if (MATCH (opcode, j_insn_32) |
13393 | /* J */ | |
13394 | || MATCH (opcode, bc_insn_32) | |
13395 | /* BC1F, BC1T, BC2F, BC2T */ | |
13396 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
13397 | /* JAL, JALX */ | |
13398 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
13399 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
13400 | || (MATCH (opcode, bzal_insn_32) | |
13401 | /* BGEZAL, BLTZAL */ | |
13402 | && reg != OP32_SREG (opcode) && reg != RA) | |
13403 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
13404 | /* JALR, JALR.HB, BEQ, BNE */ | |
13405 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
13406 | return TRUE; | |
13407 | ||
13408 | return FALSE; | |
13409 | } | |
13410 | ||
80cab405 MR |
13411 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
13412 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
13413 | then return TRUE, otherwise FALSE. */ | |
df58fc94 RS |
13414 | |
13415 | static bfd_boolean | |
80cab405 MR |
13416 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
13417 | const Elf_Internal_Rela *internal_relocs, | |
13418 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 13419 | { |
80cab405 MR |
13420 | const Elf_Internal_Rela *irel; |
13421 | unsigned long opcode; | |
13422 | ||
d21911ea | 13423 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 MR |
13424 | if (find_match (opcode, bzc_insns_32) < 0) |
13425 | return FALSE; | |
df58fc94 RS |
13426 | |
13427 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
13428 | if (irel->r_offset == offset |
13429 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
13430 | return TRUE; | |
13431 | ||
df58fc94 RS |
13432 | return FALSE; |
13433 | } | |
80cab405 MR |
13434 | |
13435 | /* Bitsize checking. */ | |
13436 | #define IS_BITSIZE(val, N) \ | |
13437 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
13438 | - (1ULL << ((N) - 1))) == (val)) | |
13439 | ||
df58fc94 RS |
13440 | \f |
13441 | bfd_boolean | |
13442 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, | |
13443 | struct bfd_link_info *link_info, | |
13444 | bfd_boolean *again) | |
13445 | { | |
833794fc | 13446 | bfd_boolean insn32 = mips_elf_hash_table (link_info)->insn32; |
df58fc94 RS |
13447 | Elf_Internal_Shdr *symtab_hdr; |
13448 | Elf_Internal_Rela *internal_relocs; | |
13449 | Elf_Internal_Rela *irel, *irelend; | |
13450 | bfd_byte *contents = NULL; | |
13451 | Elf_Internal_Sym *isymbuf = NULL; | |
13452 | ||
13453 | /* Assume nothing changes. */ | |
13454 | *again = FALSE; | |
13455 | ||
13456 | /* We don't have to do anything for a relocatable link, if | |
13457 | this section does not have relocs, or if this is not a | |
13458 | code section. */ | |
13459 | ||
0e1862bb | 13460 | if (bfd_link_relocatable (link_info) |
df58fc94 RS |
13461 | || (sec->flags & SEC_RELOC) == 0 |
13462 | || sec->reloc_count == 0 | |
13463 | || (sec->flags & SEC_CODE) == 0) | |
13464 | return TRUE; | |
13465 | ||
13466 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13467 | ||
13468 | /* Get a copy of the native relocations. */ | |
13469 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 13470 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
13471 | link_info->keep_memory)); |
13472 | if (internal_relocs == NULL) | |
13473 | goto error_return; | |
13474 | ||
13475 | /* Walk through them looking for relaxing opportunities. */ | |
13476 | irelend = internal_relocs + sec->reloc_count; | |
13477 | for (irel = internal_relocs; irel < irelend; irel++) | |
13478 | { | |
13479 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
13480 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
13481 | bfd_boolean target_is_micromips_code_p; | |
13482 | unsigned long opcode; | |
13483 | bfd_vma symval; | |
13484 | bfd_vma pcrval; | |
2309ddf2 | 13485 | bfd_byte *ptr; |
df58fc94 RS |
13486 | int fndopc; |
13487 | ||
13488 | /* The number of bytes to delete for relaxation and from where | |
07d6d2b8 | 13489 | to delete these bytes starting at irel->r_offset. */ |
df58fc94 RS |
13490 | int delcnt = 0; |
13491 | int deloff = 0; | |
13492 | ||
13493 | /* If this isn't something that can be relaxed, then ignore | |
07d6d2b8 | 13494 | this reloc. */ |
df58fc94 RS |
13495 | if (r_type != R_MICROMIPS_HI16 |
13496 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 13497 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
13498 | continue; |
13499 | ||
13500 | /* Get the section contents if we haven't done so already. */ | |
13501 | if (contents == NULL) | |
13502 | { | |
13503 | /* Get cached copy if it exists. */ | |
13504 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
13505 | contents = elf_section_data (sec)->this_hdr.contents; | |
13506 | /* Go get them off disk. */ | |
13507 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
13508 | goto error_return; | |
13509 | } | |
2309ddf2 | 13510 | ptr = contents + irel->r_offset; |
df58fc94 RS |
13511 | |
13512 | /* Read this BFD's local symbols if we haven't done so already. */ | |
13513 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
13514 | { | |
13515 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
13516 | if (isymbuf == NULL) | |
13517 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
13518 | symtab_hdr->sh_info, 0, | |
13519 | NULL, NULL, NULL); | |
13520 | if (isymbuf == NULL) | |
13521 | goto error_return; | |
13522 | } | |
13523 | ||
13524 | /* Get the value of the symbol referred to by the reloc. */ | |
13525 | if (r_symndx < symtab_hdr->sh_info) | |
13526 | { | |
13527 | /* A local symbol. */ | |
13528 | Elf_Internal_Sym *isym; | |
13529 | asection *sym_sec; | |
13530 | ||
13531 | isym = isymbuf + r_symndx; | |
13532 | if (isym->st_shndx == SHN_UNDEF) | |
13533 | sym_sec = bfd_und_section_ptr; | |
13534 | else if (isym->st_shndx == SHN_ABS) | |
13535 | sym_sec = bfd_abs_section_ptr; | |
13536 | else if (isym->st_shndx == SHN_COMMON) | |
13537 | sym_sec = bfd_com_section_ptr; | |
13538 | else | |
13539 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
13540 | symval = (isym->st_value | |
13541 | + sym_sec->output_section->vma | |
13542 | + sym_sec->output_offset); | |
13543 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
13544 | } | |
13545 | else | |
13546 | { | |
13547 | unsigned long indx; | |
13548 | struct elf_link_hash_entry *h; | |
13549 | ||
13550 | /* An external symbol. */ | |
13551 | indx = r_symndx - symtab_hdr->sh_info; | |
13552 | h = elf_sym_hashes (abfd)[indx]; | |
13553 | BFD_ASSERT (h != NULL); | |
13554 | ||
13555 | if (h->root.type != bfd_link_hash_defined | |
13556 | && h->root.type != bfd_link_hash_defweak) | |
13557 | /* This appears to be a reference to an undefined | |
13558 | symbol. Just ignore it -- it will be caught by the | |
13559 | regular reloc processing. */ | |
13560 | continue; | |
13561 | ||
13562 | symval = (h->root.u.def.value | |
13563 | + h->root.u.def.section->output_section->vma | |
13564 | + h->root.u.def.section->output_offset); | |
13565 | target_is_micromips_code_p = (!h->needs_plt | |
13566 | && ELF_ST_IS_MICROMIPS (h->other)); | |
13567 | } | |
13568 | ||
13569 | ||
13570 | /* For simplicity of coding, we are going to modify the | |
07d6d2b8 AM |
13571 | section contents, the section relocs, and the BFD symbol |
13572 | table. We must tell the rest of the code not to free up this | |
13573 | information. It would be possible to instead create a table | |
13574 | of changes which have to be made, as is done in coff-mips.c; | |
13575 | that would be more work, but would require less memory when | |
13576 | the linker is run. */ | |
df58fc94 RS |
13577 | |
13578 | /* Only 32-bit instructions relaxed. */ | |
13579 | if (irel->r_offset + 4 > sec->size) | |
13580 | continue; | |
13581 | ||
d21911ea | 13582 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13583 | |
13584 | /* This is the pc-relative distance from the instruction the | |
07d6d2b8 | 13585 | relocation is applied to, to the symbol referred. */ |
df58fc94 RS |
13586 | pcrval = (symval |
13587 | - (sec->output_section->vma + sec->output_offset) | |
13588 | - irel->r_offset); | |
13589 | ||
13590 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
07d6d2b8 AM |
13591 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or |
13592 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
df58fc94 | 13593 | |
07d6d2b8 | 13594 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) |
df58fc94 | 13595 | |
07d6d2b8 AM |
13596 | where pcrval has first to be adjusted to apply against the LO16 |
13597 | location (we make the adjustment later on, when we have figured | |
13598 | out the offset). */ | |
df58fc94 RS |
13599 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) |
13600 | { | |
80cab405 | 13601 | bfd_boolean bzc = FALSE; |
df58fc94 RS |
13602 | unsigned long nextopc; |
13603 | unsigned long reg; | |
13604 | bfd_vma offset; | |
13605 | ||
13606 | /* Give up if the previous reloc was a HI16 against this symbol | |
13607 | too. */ | |
13608 | if (irel > internal_relocs | |
13609 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
13610 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
13611 | continue; | |
13612 | ||
13613 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
13614 | if (irel + 1 >= irelend | |
13615 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
13616 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
13617 | continue; | |
13618 | ||
13619 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
13620 | if (irel + 2 >= irelend | |
13621 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
13622 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
13623 | continue; | |
13624 | ||
80cab405 MR |
13625 | /* See if the LUI instruction *might* be in a branch delay slot. |
13626 | We check whether what looks like a 16-bit branch or jump is | |
13627 | actually an immediate argument to a compact branch, and let | |
13628 | it through if so. */ | |
df58fc94 | 13629 | if (irel->r_offset >= 2 |
2309ddf2 | 13630 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 13631 | && !(irel->r_offset >= 4 |
80cab405 MR |
13632 | && (bzc = check_relocated_bzc (abfd, |
13633 | ptr - 4, irel->r_offset - 4, | |
13634 | internal_relocs, irelend)))) | |
df58fc94 RS |
13635 | continue; |
13636 | if (irel->r_offset >= 4 | |
80cab405 | 13637 | && !bzc |
2309ddf2 | 13638 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
13639 | continue; |
13640 | ||
13641 | reg = OP32_SREG (opcode); | |
13642 | ||
13643 | /* We only relax adjacent instructions or ones separated with | |
13644 | a branch or jump that has a delay slot. The branch or jump | |
13645 | must not fiddle with the register used to hold the address. | |
13646 | Subtract 4 for the LUI itself. */ | |
13647 | offset = irel[1].r_offset - irel[0].r_offset; | |
13648 | switch (offset - 4) | |
13649 | { | |
13650 | case 0: | |
13651 | break; | |
13652 | case 2: | |
2309ddf2 | 13653 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
13654 | break; |
13655 | continue; | |
13656 | case 4: | |
2309ddf2 | 13657 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
13658 | break; |
13659 | continue; | |
13660 | default: | |
13661 | continue; | |
13662 | } | |
13663 | ||
d21911ea | 13664 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
13665 | |
13666 | /* Give up unless the same register is used with both | |
13667 | relocations. */ | |
13668 | if (OP32_SREG (nextopc) != reg) | |
13669 | continue; | |
13670 | ||
13671 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
13672 | and rounding up to take masking of the two LSBs into account. */ | |
13673 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
13674 | ||
13675 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
13676 | if (IS_BITSIZE (symval, 16)) | |
13677 | { | |
13678 | /* Fix the relocation's type. */ | |
13679 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
13680 | ||
13681 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
07d6d2b8 AM |
13682 | source register in bits 20:16. This register becomes $0 |
13683 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
df58fc94 RS |
13684 | nextopc &= ~0x001f0000; |
13685 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
13686 | contents + irel[1].r_offset); | |
13687 | } | |
13688 | ||
13689 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
13690 | We add 4 to take LUI deletion into account while checking | |
13691 | the PC-relative distance. */ | |
13692 | else if (symval % 4 == 0 | |
13693 | && IS_BITSIZE (pcrval + 4, 25) | |
13694 | && MATCH (nextopc, addiu_insn) | |
13695 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
13696 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
13697 | { | |
13698 | /* Fix the relocation's type. */ | |
13699 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
13700 | ||
13701 | /* Replace ADDIU with the ADDIUPC version. */ | |
13702 | nextopc = (addiupc_insn.match | |
13703 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
13704 | ||
d21911ea MR |
13705 | bfd_put_micromips_32 (abfd, nextopc, |
13706 | contents + irel[1].r_offset); | |
df58fc94 RS |
13707 | } |
13708 | ||
13709 | /* Can't do anything, give up, sigh... */ | |
13710 | else | |
13711 | continue; | |
13712 | ||
13713 | /* Fix the relocation's type. */ | |
13714 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
13715 | ||
13716 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
13717 | delcnt = 4; | |
13718 | deloff = 0; | |
13719 | } | |
13720 | ||
13721 | /* Compact branch relaxation -- due to the multitude of macros | |
07d6d2b8 AM |
13722 | employed by the compiler/assembler, compact branches are not |
13723 | always generated. Obviously, this can/will be fixed elsewhere, | |
13724 | but there is no drawback in double checking it here. */ | |
df58fc94 RS |
13725 | else if (r_type == R_MICROMIPS_PC16_S1 |
13726 | && irel->r_offset + 5 < sec->size | |
13727 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
13728 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
833794fc MR |
13729 | && ((!insn32 |
13730 | && (delcnt = MATCH (bfd_get_16 (abfd, ptr + 4), | |
13731 | nop_insn_16) ? 2 : 0)) | |
13732 | || (irel->r_offset + 7 < sec->size | |
13733 | && (delcnt = MATCH (bfd_get_micromips_32 (abfd, | |
13734 | ptr + 4), | |
13735 | nop_insn_32) ? 4 : 0)))) | |
df58fc94 RS |
13736 | { |
13737 | unsigned long reg; | |
13738 | ||
13739 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
13740 | ||
13741 | /* Replace BEQZ/BNEZ with the compact version. */ | |
13742 | opcode = (bzc_insns_32[fndopc].match | |
13743 | | BZC32_REG_FIELD (reg) | |
13744 | | (opcode & 0xffff)); /* Addend value. */ | |
13745 | ||
d21911ea | 13746 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 | 13747 | |
833794fc MR |
13748 | /* Delete the delay slot NOP: two or four bytes from |
13749 | irel->offset + 4; delcnt has already been set above. */ | |
df58fc94 RS |
13750 | deloff = 4; |
13751 | } | |
13752 | ||
13753 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
07d6d2b8 | 13754 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
13755 | else if (!insn32 |
13756 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
13757 | && IS_BITSIZE (pcrval - 2, 11) |
13758 | && find_match (opcode, b_insns_32) >= 0) | |
13759 | { | |
13760 | /* Fix the relocation's type. */ | |
13761 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
13762 | ||
a8685210 | 13763 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
13764 | bfd_put_16 (abfd, |
13765 | (b_insn_16.match | |
13766 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 13767 | ptr); |
df58fc94 RS |
13768 | |
13769 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
13770 | delcnt = 2; | |
13771 | deloff = 2; | |
13772 | } | |
13773 | ||
13774 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
07d6d2b8 | 13775 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
13776 | else if (!insn32 |
13777 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
13778 | && IS_BITSIZE (pcrval - 2, 8) |
13779 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
13780 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
13781 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
13782 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
13783 | { | |
13784 | unsigned long reg; | |
13785 | ||
13786 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
13787 | ||
13788 | /* Fix the relocation's type. */ | |
13789 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
13790 | ||
a8685210 | 13791 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
13792 | bfd_put_16 (abfd, |
13793 | (bz_insns_16[fndopc].match | |
13794 | | BZ16_REG_FIELD (reg) | |
13795 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 13796 | ptr); |
df58fc94 RS |
13797 | |
13798 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
13799 | delcnt = 2; | |
13800 | deloff = 2; | |
13801 | } | |
13802 | ||
13803 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
833794fc MR |
13804 | else if (!insn32 |
13805 | && r_type == R_MICROMIPS_26_S1 | |
df58fc94 RS |
13806 | && target_is_micromips_code_p |
13807 | && irel->r_offset + 7 < sec->size | |
13808 | && MATCH (opcode, jal_insn_32_bd32)) | |
13809 | { | |
13810 | unsigned long n32opc; | |
13811 | bfd_boolean relaxed = FALSE; | |
13812 | ||
d21911ea | 13813 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
13814 | |
13815 | if (MATCH (n32opc, nop_insn_32)) | |
13816 | { | |
13817 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 13818 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 RS |
13819 | |
13820 | relaxed = TRUE; | |
13821 | } | |
13822 | else if (find_match (n32opc, move_insns_32) >= 0) | |
13823 | { | |
13824 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
13825 | bfd_put_16 (abfd, | |
13826 | (move_insn_16.match | |
13827 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
13828 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 13829 | ptr + 4); |
df58fc94 RS |
13830 | |
13831 | relaxed = TRUE; | |
13832 | } | |
13833 | /* Other 32-bit instructions relaxable to 16-bit | |
13834 | instructions will be handled here later. */ | |
13835 | ||
13836 | if (relaxed) | |
13837 | { | |
13838 | /* JAL with 32-bit delay slot that is changed to a JALS | |
07d6d2b8 | 13839 | with 16-bit delay slot. */ |
d21911ea | 13840 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
13841 | |
13842 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
13843 | delcnt = 2; | |
13844 | deloff = 6; | |
13845 | } | |
13846 | } | |
13847 | ||
13848 | if (delcnt != 0) | |
13849 | { | |
13850 | /* Note that we've changed the relocs, section contents, etc. */ | |
13851 | elf_section_data (sec)->relocs = internal_relocs; | |
13852 | elf_section_data (sec)->this_hdr.contents = contents; | |
13853 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
13854 | ||
13855 | /* Delete bytes depending on the delcnt and deloff. */ | |
13856 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
13857 | irel->r_offset + deloff, delcnt)) | |
13858 | goto error_return; | |
13859 | ||
13860 | /* That will change things, so we should relax again. | |
13861 | Note that this is not required, and it may be slow. */ | |
13862 | *again = TRUE; | |
13863 | } | |
13864 | } | |
13865 | ||
13866 | if (isymbuf != NULL | |
13867 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
13868 | { | |
13869 | if (! link_info->keep_memory) | |
13870 | free (isymbuf); | |
13871 | else | |
13872 | { | |
13873 | /* Cache the symbols for elf_link_input_bfd. */ | |
13874 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
13875 | } | |
13876 | } | |
13877 | ||
13878 | if (contents != NULL | |
13879 | && elf_section_data (sec)->this_hdr.contents != contents) | |
13880 | { | |
13881 | if (! link_info->keep_memory) | |
13882 | free (contents); | |
13883 | else | |
13884 | { | |
13885 | /* Cache the section contents for elf_link_input_bfd. */ | |
13886 | elf_section_data (sec)->this_hdr.contents = contents; | |
13887 | } | |
13888 | } | |
13889 | ||
13890 | if (internal_relocs != NULL | |
13891 | && elf_section_data (sec)->relocs != internal_relocs) | |
13892 | free (internal_relocs); | |
13893 | ||
13894 | return TRUE; | |
13895 | ||
13896 | error_return: | |
13897 | if (isymbuf != NULL | |
13898 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
13899 | free (isymbuf); | |
13900 | if (contents != NULL | |
13901 | && elf_section_data (sec)->this_hdr.contents != contents) | |
13902 | free (contents); | |
13903 | if (internal_relocs != NULL | |
13904 | && elf_section_data (sec)->relocs != internal_relocs) | |
13905 | free (internal_relocs); | |
13906 | ||
13907 | return FALSE; | |
13908 | } | |
13909 | \f | |
b49e97c9 TS |
13910 | /* Create a MIPS ELF linker hash table. */ |
13911 | ||
13912 | struct bfd_link_hash_table * | |
9719ad41 | 13913 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
13914 | { |
13915 | struct mips_elf_link_hash_table *ret; | |
13916 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
13917 | ||
7bf52ea2 | 13918 | ret = bfd_zmalloc (amt); |
9719ad41 | 13919 | if (ret == NULL) |
b49e97c9 TS |
13920 | return NULL; |
13921 | ||
66eb6687 AM |
13922 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
13923 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
13924 | sizeof (struct mips_elf_link_hash_entry), |
13925 | MIPS_ELF_DATA)) | |
b49e97c9 | 13926 | { |
e2d34d7d | 13927 | free (ret); |
b49e97c9 TS |
13928 | return NULL; |
13929 | } | |
1bbce132 MR |
13930 | ret->root.init_plt_refcount.plist = NULL; |
13931 | ret->root.init_plt_offset.plist = NULL; | |
b49e97c9 | 13932 | |
b49e97c9 TS |
13933 | return &ret->root.root; |
13934 | } | |
0a44bf69 RS |
13935 | |
13936 | /* Likewise, but indicate that the target is VxWorks. */ | |
13937 | ||
13938 | struct bfd_link_hash_table * | |
13939 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
13940 | { | |
13941 | struct bfd_link_hash_table *ret; | |
13942 | ||
13943 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
13944 | if (ret) | |
13945 | { | |
13946 | struct mips_elf_link_hash_table *htab; | |
13947 | ||
13948 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
13949 | htab->use_plts_and_copy_relocs = TRUE; |
13950 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
13951 | } |
13952 | return ret; | |
13953 | } | |
861fb55a DJ |
13954 | |
13955 | /* A function that the linker calls if we are allowed to use PLTs | |
13956 | and copy relocs. */ | |
13957 | ||
13958 | void | |
13959 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
13960 | { | |
13961 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
13962 | } | |
833794fc MR |
13963 | |
13964 | /* A function that the linker calls to select between all or only | |
8b10b0b3 MR |
13965 | 32-bit microMIPS instructions, and between making or ignoring |
13966 | branch relocation checks for invalid transitions between ISA modes. */ | |
833794fc MR |
13967 | |
13968 | void | |
8b10b0b3 MR |
13969 | _bfd_mips_elf_linker_flags (struct bfd_link_info *info, bfd_boolean insn32, |
13970 | bfd_boolean ignore_branch_isa) | |
833794fc | 13971 | { |
8b10b0b3 MR |
13972 | mips_elf_hash_table (info)->insn32 = insn32; |
13973 | mips_elf_hash_table (info)->ignore_branch_isa = ignore_branch_isa; | |
833794fc | 13974 | } |
b49e97c9 | 13975 | \f |
c97c330b MF |
13976 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
13977 | ||
13978 | struct mips_mach_extension | |
13979 | { | |
13980 | unsigned long extension, base; | |
13981 | }; | |
13982 | ||
13983 | ||
13984 | /* An array describing how BFD machines relate to one another. The entries | |
13985 | are ordered topologically with MIPS I extensions listed last. */ | |
13986 | ||
13987 | static const struct mips_mach_extension mips_mach_extensions[] = | |
13988 | { | |
13989 | /* MIPS64r2 extensions. */ | |
13990 | { bfd_mach_mips_octeon3, bfd_mach_mips_octeon2 }, | |
13991 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, | |
13992 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, | |
13993 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
13994 | { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64r2 }, | |
13995 | ||
13996 | /* MIPS64 extensions. */ | |
13997 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, | |
13998 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, | |
13999 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, | |
14000 | ||
14001 | /* MIPS V extensions. */ | |
14002 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
14003 | ||
14004 | /* R10000 extensions. */ | |
14005 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
14006 | { bfd_mach_mips14000, bfd_mach_mips10000 }, | |
14007 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
14008 | ||
14009 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
14010 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
14011 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
14012 | many libraries will just use the core ISA. Perhaps we could add | |
14013 | some sort of ASE flag if this ever proves a problem. */ | |
14014 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
14015 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
14016 | ||
14017 | /* MIPS IV extensions. */ | |
14018 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
14019 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
14020 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
14021 | { bfd_mach_mips7000, bfd_mach_mips8000 }, | |
14022 | { bfd_mach_mips9000, bfd_mach_mips8000 }, | |
14023 | ||
14024 | /* VR4100 extensions. */ | |
14025 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
14026 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
14027 | ||
14028 | /* MIPS III extensions. */ | |
14029 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, | |
14030 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
14031 | { bfd_mach_mips8000, bfd_mach_mips4000 }, | |
14032 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
14033 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
14034 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
14035 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
14036 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
c97c330b MF |
14037 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
14038 | ||
38bf472a MR |
14039 | /* MIPS32r3 extensions. */ |
14040 | { bfd_mach_mips_interaptiv_mr2, bfd_mach_mipsisa32r3 }, | |
14041 | ||
14042 | /* MIPS32r2 extensions. */ | |
14043 | { bfd_mach_mipsisa32r3, bfd_mach_mipsisa32r2 }, | |
14044 | ||
c97c330b MF |
14045 | /* MIPS32 extensions. */ |
14046 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
14047 | ||
14048 | /* MIPS II extensions. */ | |
14049 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
14050 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
b417536f | 14051 | { bfd_mach_mips4010, bfd_mach_mips6000 }, |
c97c330b MF |
14052 | |
14053 | /* MIPS I extensions. */ | |
14054 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
14055 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
14056 | }; | |
14057 | ||
14058 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
14059 | ||
14060 | static bfd_boolean | |
14061 | mips_mach_extends_p (unsigned long base, unsigned long extension) | |
14062 | { | |
14063 | size_t i; | |
14064 | ||
14065 | if (extension == base) | |
14066 | return TRUE; | |
14067 | ||
14068 | if (base == bfd_mach_mipsisa32 | |
14069 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
14070 | return TRUE; | |
14071 | ||
14072 | if (base == bfd_mach_mipsisa32r2 | |
14073 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
14074 | return TRUE; | |
14075 | ||
14076 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
14077 | if (extension == mips_mach_extensions[i].extension) | |
14078 | { | |
14079 | extension = mips_mach_extensions[i].base; | |
14080 | if (extension == base) | |
14081 | return TRUE; | |
14082 | } | |
14083 | ||
14084 | return FALSE; | |
14085 | } | |
14086 | ||
14087 | /* Return the BFD mach for each .MIPS.abiflags ISA Extension. */ | |
14088 | ||
14089 | static unsigned long | |
14090 | bfd_mips_isa_ext_mach (unsigned int isa_ext) | |
14091 | { | |
14092 | switch (isa_ext) | |
14093 | { | |
07d6d2b8 AM |
14094 | case AFL_EXT_3900: return bfd_mach_mips3900; |
14095 | case AFL_EXT_4010: return bfd_mach_mips4010; | |
14096 | case AFL_EXT_4100: return bfd_mach_mips4100; | |
14097 | case AFL_EXT_4111: return bfd_mach_mips4111; | |
14098 | case AFL_EXT_4120: return bfd_mach_mips4120; | |
14099 | case AFL_EXT_4650: return bfd_mach_mips4650; | |
14100 | case AFL_EXT_5400: return bfd_mach_mips5400; | |
14101 | case AFL_EXT_5500: return bfd_mach_mips5500; | |
14102 | case AFL_EXT_5900: return bfd_mach_mips5900; | |
14103 | case AFL_EXT_10000: return bfd_mach_mips10000; | |
c97c330b MF |
14104 | case AFL_EXT_LOONGSON_2E: return bfd_mach_mips_loongson_2e; |
14105 | case AFL_EXT_LOONGSON_2F: return bfd_mach_mips_loongson_2f; | |
14106 | case AFL_EXT_LOONGSON_3A: return bfd_mach_mips_loongson_3a; | |
07d6d2b8 | 14107 | case AFL_EXT_SB1: return bfd_mach_mips_sb1; |
c97c330b MF |
14108 | case AFL_EXT_OCTEON: return bfd_mach_mips_octeon; |
14109 | case AFL_EXT_OCTEONP: return bfd_mach_mips_octeonp; | |
14110 | case AFL_EXT_OCTEON2: return bfd_mach_mips_octeon2; | |
07d6d2b8 AM |
14111 | case AFL_EXT_XLR: return bfd_mach_mips_xlr; |
14112 | default: return bfd_mach_mips3000; | |
c97c330b MF |
14113 | } |
14114 | } | |
14115 | ||
351cdf24 MF |
14116 | /* Return the .MIPS.abiflags value representing each ISA Extension. */ |
14117 | ||
14118 | unsigned int | |
14119 | bfd_mips_isa_ext (bfd *abfd) | |
14120 | { | |
14121 | switch (bfd_get_mach (abfd)) | |
14122 | { | |
07d6d2b8 AM |
14123 | case bfd_mach_mips3900: return AFL_EXT_3900; |
14124 | case bfd_mach_mips4010: return AFL_EXT_4010; | |
14125 | case bfd_mach_mips4100: return AFL_EXT_4100; | |
14126 | case bfd_mach_mips4111: return AFL_EXT_4111; | |
14127 | case bfd_mach_mips4120: return AFL_EXT_4120; | |
14128 | case bfd_mach_mips4650: return AFL_EXT_4650; | |
14129 | case bfd_mach_mips5400: return AFL_EXT_5400; | |
14130 | case bfd_mach_mips5500: return AFL_EXT_5500; | |
14131 | case bfd_mach_mips5900: return AFL_EXT_5900; | |
14132 | case bfd_mach_mips10000: return AFL_EXT_10000; | |
c97c330b MF |
14133 | case bfd_mach_mips_loongson_2e: return AFL_EXT_LOONGSON_2E; |
14134 | case bfd_mach_mips_loongson_2f: return AFL_EXT_LOONGSON_2F; | |
14135 | case bfd_mach_mips_loongson_3a: return AFL_EXT_LOONGSON_3A; | |
07d6d2b8 AM |
14136 | case bfd_mach_mips_sb1: return AFL_EXT_SB1; |
14137 | case bfd_mach_mips_octeon: return AFL_EXT_OCTEON; | |
14138 | case bfd_mach_mips_octeonp: return AFL_EXT_OCTEONP; | |
14139 | case bfd_mach_mips_octeon3: return AFL_EXT_OCTEON3; | |
14140 | case bfd_mach_mips_octeon2: return AFL_EXT_OCTEON2; | |
14141 | case bfd_mach_mips_xlr: return AFL_EXT_XLR; | |
38bf472a MR |
14142 | case bfd_mach_mips_interaptiv_mr2: |
14143 | return AFL_EXT_INTERAPTIV_MR2; | |
07d6d2b8 | 14144 | default: return 0; |
c97c330b MF |
14145 | } |
14146 | } | |
14147 | ||
14148 | /* Encode ISA level and revision as a single value. */ | |
14149 | #define LEVEL_REV(LEV,REV) ((LEV) << 3 | (REV)) | |
14150 | ||
14151 | /* Decode a single value into level and revision. */ | |
14152 | #define ISA_LEVEL(LEVREV) ((LEVREV) >> 3) | |
14153 | #define ISA_REV(LEVREV) ((LEVREV) & 0x7) | |
351cdf24 MF |
14154 | |
14155 | /* Update the isa_level, isa_rev, isa_ext fields of abiflags. */ | |
14156 | ||
14157 | static void | |
14158 | update_mips_abiflags_isa (bfd *abfd, Elf_Internal_ABIFlags_v0 *abiflags) | |
14159 | { | |
c97c330b | 14160 | int new_isa = 0; |
351cdf24 MF |
14161 | switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) |
14162 | { | |
c97c330b MF |
14163 | case E_MIPS_ARCH_1: new_isa = LEVEL_REV (1, 0); break; |
14164 | case E_MIPS_ARCH_2: new_isa = LEVEL_REV (2, 0); break; | |
14165 | case E_MIPS_ARCH_3: new_isa = LEVEL_REV (3, 0); break; | |
14166 | case E_MIPS_ARCH_4: new_isa = LEVEL_REV (4, 0); break; | |
14167 | case E_MIPS_ARCH_5: new_isa = LEVEL_REV (5, 0); break; | |
14168 | case E_MIPS_ARCH_32: new_isa = LEVEL_REV (32, 1); break; | |
14169 | case E_MIPS_ARCH_32R2: new_isa = LEVEL_REV (32, 2); break; | |
14170 | case E_MIPS_ARCH_32R6: new_isa = LEVEL_REV (32, 6); break; | |
14171 | case E_MIPS_ARCH_64: new_isa = LEVEL_REV (64, 1); break; | |
14172 | case E_MIPS_ARCH_64R2: new_isa = LEVEL_REV (64, 2); break; | |
14173 | case E_MIPS_ARCH_64R6: new_isa = LEVEL_REV (64, 6); break; | |
351cdf24 | 14174 | default: |
4eca0228 | 14175 | _bfd_error_handler |
695344c0 | 14176 | /* xgettext:c-format */ |
2c1c9679 | 14177 | (_("%pB: unknown architecture %s"), |
351cdf24 MF |
14178 | abfd, bfd_printable_name (abfd)); |
14179 | } | |
14180 | ||
c97c330b MF |
14181 | if (new_isa > LEVEL_REV (abiflags->isa_level, abiflags->isa_rev)) |
14182 | { | |
14183 | abiflags->isa_level = ISA_LEVEL (new_isa); | |
14184 | abiflags->isa_rev = ISA_REV (new_isa); | |
14185 | } | |
14186 | ||
14187 | /* Update the isa_ext if ABFD describes a further extension. */ | |
14188 | if (mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags->isa_ext), | |
14189 | bfd_get_mach (abfd))) | |
14190 | abiflags->isa_ext = bfd_mips_isa_ext (abfd); | |
351cdf24 MF |
14191 | } |
14192 | ||
14193 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
14194 | ||
14195 | static bfd_boolean | |
14196 | mips_32bit_flags_p (flagword flags) | |
14197 | { | |
14198 | return ((flags & EF_MIPS_32BITMODE) != 0 | |
14199 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
14200 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
14201 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
14202 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
14203 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
7361da2c AB |
14204 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2 |
14205 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6); | |
351cdf24 MF |
14206 | } |
14207 | ||
14208 | /* Infer the content of the ABI flags based on the elf header. */ | |
14209 | ||
14210 | static void | |
14211 | infer_mips_abiflags (bfd *abfd, Elf_Internal_ABIFlags_v0* abiflags) | |
14212 | { | |
14213 | obj_attribute *in_attr; | |
14214 | ||
14215 | memset (abiflags, 0, sizeof (Elf_Internal_ABIFlags_v0)); | |
14216 | update_mips_abiflags_isa (abfd, abiflags); | |
14217 | ||
14218 | if (mips_32bit_flags_p (elf_elfheader (abfd)->e_flags)) | |
14219 | abiflags->gpr_size = AFL_REG_32; | |
14220 | else | |
14221 | abiflags->gpr_size = AFL_REG_64; | |
14222 | ||
14223 | abiflags->cpr1_size = AFL_REG_NONE; | |
14224 | ||
14225 | in_attr = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU]; | |
14226 | abiflags->fp_abi = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
14227 | ||
14228 | if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_SINGLE | |
14229 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_XX | |
14230 | || (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14231 | && abiflags->gpr_size == AFL_REG_32)) | |
14232 | abiflags->cpr1_size = AFL_REG_32; | |
14233 | else if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14234 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64 | |
14235 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
14236 | abiflags->cpr1_size = AFL_REG_64; | |
14237 | ||
14238 | abiflags->cpr2_size = AFL_REG_NONE; | |
14239 | ||
14240 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) | |
14241 | abiflags->ases |= AFL_ASE_MDMX; | |
14242 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
14243 | abiflags->ases |= AFL_ASE_MIPS16; | |
14244 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) | |
14245 | abiflags->ases |= AFL_ASE_MICROMIPS; | |
14246 | ||
14247 | if (abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
14248 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_SOFT | |
14249 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_64A | |
14250 | && abiflags->isa_level >= 32 | |
14251 | && abiflags->isa_ext != AFL_EXT_LOONGSON_3A) | |
14252 | abiflags->flags1 |= AFL_FLAGS1_ODDSPREG; | |
14253 | } | |
14254 | ||
b49e97c9 TS |
14255 | /* We need to use a special link routine to handle the .reginfo and |
14256 | the .mdebug sections. We need to merge all instances of these | |
14257 | sections together, not write them all out sequentially. */ | |
14258 | ||
b34976b6 | 14259 | bfd_boolean |
9719ad41 | 14260 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 14261 | { |
b49e97c9 TS |
14262 | asection *o; |
14263 | struct bfd_link_order *p; | |
14264 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
351cdf24 | 14265 | asection *rtproc_sec, *abiflags_sec; |
b49e97c9 TS |
14266 | Elf32_RegInfo reginfo; |
14267 | struct ecoff_debug_info debug; | |
861fb55a | 14268 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
14269 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
14270 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 14271 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 14272 | void *mdebug_handle = NULL; |
b49e97c9 TS |
14273 | asection *s; |
14274 | EXTR esym; | |
14275 | unsigned int i; | |
14276 | bfd_size_type amt; | |
0a44bf69 | 14277 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
14278 | |
14279 | static const char * const secname[] = | |
14280 | { | |
14281 | ".text", ".init", ".fini", ".data", | |
14282 | ".rodata", ".sdata", ".sbss", ".bss" | |
14283 | }; | |
14284 | static const int sc[] = | |
14285 | { | |
14286 | scText, scInit, scFini, scData, | |
14287 | scRData, scSData, scSBss, scBss | |
14288 | }; | |
14289 | ||
0a44bf69 | 14290 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
14291 | BFD_ASSERT (htab != NULL); |
14292 | ||
64575f78 MR |
14293 | /* Sort the dynamic symbols so that those with GOT entries come after |
14294 | those without. */ | |
d4596a51 RS |
14295 | if (!mips_elf_sort_hash_table (abfd, info)) |
14296 | return FALSE; | |
b49e97c9 | 14297 | |
861fb55a DJ |
14298 | /* Create any scheduled LA25 stubs. */ |
14299 | hti.info = info; | |
14300 | hti.output_bfd = abfd; | |
14301 | hti.error = FALSE; | |
14302 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
14303 | if (hti.error) | |
14304 | return FALSE; | |
14305 | ||
b49e97c9 TS |
14306 | /* Get a value for the GP register. */ |
14307 | if (elf_gp (abfd) == 0) | |
14308 | { | |
14309 | struct bfd_link_hash_entry *h; | |
14310 | ||
b34976b6 | 14311 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 14312 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
14313 | elf_gp (abfd) = (h->u.def.value |
14314 | + h->u.def.section->output_section->vma | |
14315 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
14316 | else if (htab->is_vxworks |
14317 | && (h = bfd_link_hash_lookup (info->hash, | |
14318 | "_GLOBAL_OFFSET_TABLE_", | |
14319 | FALSE, FALSE, TRUE)) | |
14320 | && h->type == bfd_link_hash_defined) | |
14321 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
14322 | + h->u.def.section->output_offset | |
14323 | + h->u.def.value); | |
0e1862bb | 14324 | else if (bfd_link_relocatable (info)) |
b49e97c9 TS |
14325 | { |
14326 | bfd_vma lo = MINUS_ONE; | |
14327 | ||
14328 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 14329 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
14330 | if (o->vma < lo |
14331 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
14332 | lo = o->vma; | |
14333 | ||
14334 | /* And calculate GP relative to that. */ | |
0a44bf69 | 14335 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
14336 | } |
14337 | else | |
14338 | { | |
14339 | /* If the relocate_section function needs to do a reloc | |
14340 | involving the GP value, it should make a reloc_dangerous | |
14341 | callback to warn that GP is not defined. */ | |
14342 | } | |
14343 | } | |
14344 | ||
14345 | /* Go through the sections and collect the .reginfo and .mdebug | |
14346 | information. */ | |
351cdf24 | 14347 | abiflags_sec = NULL; |
b49e97c9 TS |
14348 | reginfo_sec = NULL; |
14349 | mdebug_sec = NULL; | |
14350 | gptab_data_sec = NULL; | |
14351 | gptab_bss_sec = NULL; | |
9719ad41 | 14352 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 | 14353 | { |
351cdf24 MF |
14354 | if (strcmp (o->name, ".MIPS.abiflags") == 0) |
14355 | { | |
14356 | /* We have found the .MIPS.abiflags section in the output file. | |
14357 | Look through all the link_orders comprising it and remove them. | |
14358 | The data is merged in _bfd_mips_elf_merge_private_bfd_data. */ | |
14359 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
14360 | { | |
14361 | asection *input_section; | |
14362 | ||
14363 | if (p->type != bfd_indirect_link_order) | |
14364 | { | |
14365 | if (p->type == bfd_data_link_order) | |
14366 | continue; | |
14367 | abort (); | |
14368 | } | |
14369 | ||
14370 | input_section = p->u.indirect.section; | |
14371 | ||
14372 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14373 | elf_link_input_bfd ignores this section. */ | |
14374 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14375 | } | |
14376 | ||
14377 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
14378 | BFD_ASSERT(o->size == sizeof (Elf_External_ABIFlags_v0)); | |
14379 | ||
14380 | /* Skip this section later on (I don't think this currently | |
14381 | matters, but someday it might). */ | |
14382 | o->map_head.link_order = NULL; | |
14383 | ||
14384 | abiflags_sec = o; | |
14385 | } | |
14386 | ||
b49e97c9 TS |
14387 | if (strcmp (o->name, ".reginfo") == 0) |
14388 | { | |
14389 | memset (®info, 0, sizeof reginfo); | |
14390 | ||
14391 | /* We have found the .reginfo section in the output file. | |
14392 | Look through all the link_orders comprising it and merge | |
14393 | the information together. */ | |
8423293d | 14394 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14395 | { |
14396 | asection *input_section; | |
14397 | bfd *input_bfd; | |
14398 | Elf32_External_RegInfo ext; | |
14399 | Elf32_RegInfo sub; | |
6798f8bf | 14400 | bfd_size_type sz; |
b49e97c9 TS |
14401 | |
14402 | if (p->type != bfd_indirect_link_order) | |
14403 | { | |
14404 | if (p->type == bfd_data_link_order) | |
14405 | continue; | |
14406 | abort (); | |
14407 | } | |
14408 | ||
14409 | input_section = p->u.indirect.section; | |
14410 | input_bfd = input_section->owner; | |
14411 | ||
6798f8bf MR |
14412 | sz = (input_section->size < sizeof (ext) |
14413 | ? input_section->size : sizeof (ext)); | |
14414 | memset (&ext, 0, sizeof (ext)); | |
b49e97c9 | 14415 | if (! bfd_get_section_contents (input_bfd, input_section, |
6798f8bf | 14416 | &ext, 0, sz)) |
b34976b6 | 14417 | return FALSE; |
b49e97c9 TS |
14418 | |
14419 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
14420 | ||
14421 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
14422 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
14423 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
14424 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
14425 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
14426 | ||
14427 | /* ri_gp_value is set by the function | |
1c5e4ee9 | 14428 | `_bfd_mips_elf_section_processing' when the section is |
b49e97c9 TS |
14429 | finally written out. */ |
14430 | ||
14431 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14432 | elf_link_input_bfd ignores this section. */ | |
14433 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14434 | } | |
14435 | ||
14436 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
b248d650 | 14437 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
14438 | |
14439 | /* Skip this section later on (I don't think this currently | |
14440 | matters, but someday it might). */ | |
8423293d | 14441 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14442 | |
14443 | reginfo_sec = o; | |
14444 | } | |
14445 | ||
14446 | if (strcmp (o->name, ".mdebug") == 0) | |
14447 | { | |
14448 | struct extsym_info einfo; | |
14449 | bfd_vma last; | |
14450 | ||
14451 | /* We have found the .mdebug section in the output file. | |
14452 | Look through all the link_orders comprising it and merge | |
14453 | the information together. */ | |
14454 | symhdr->magic = swap->sym_magic; | |
14455 | /* FIXME: What should the version stamp be? */ | |
14456 | symhdr->vstamp = 0; | |
14457 | symhdr->ilineMax = 0; | |
14458 | symhdr->cbLine = 0; | |
14459 | symhdr->idnMax = 0; | |
14460 | symhdr->ipdMax = 0; | |
14461 | symhdr->isymMax = 0; | |
14462 | symhdr->ioptMax = 0; | |
14463 | symhdr->iauxMax = 0; | |
14464 | symhdr->issMax = 0; | |
14465 | symhdr->issExtMax = 0; | |
14466 | symhdr->ifdMax = 0; | |
14467 | symhdr->crfd = 0; | |
14468 | symhdr->iextMax = 0; | |
14469 | ||
14470 | /* We accumulate the debugging information itself in the | |
14471 | debug_info structure. */ | |
14472 | debug.line = NULL; | |
14473 | debug.external_dnr = NULL; | |
14474 | debug.external_pdr = NULL; | |
14475 | debug.external_sym = NULL; | |
14476 | debug.external_opt = NULL; | |
14477 | debug.external_aux = NULL; | |
14478 | debug.ss = NULL; | |
14479 | debug.ssext = debug.ssext_end = NULL; | |
14480 | debug.external_fdr = NULL; | |
14481 | debug.external_rfd = NULL; | |
14482 | debug.external_ext = debug.external_ext_end = NULL; | |
14483 | ||
14484 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 14485 | if (mdebug_handle == NULL) |
b34976b6 | 14486 | return FALSE; |
b49e97c9 TS |
14487 | |
14488 | esym.jmptbl = 0; | |
14489 | esym.cobol_main = 0; | |
14490 | esym.weakext = 0; | |
14491 | esym.reserved = 0; | |
14492 | esym.ifd = ifdNil; | |
14493 | esym.asym.iss = issNil; | |
14494 | esym.asym.st = stLocal; | |
14495 | esym.asym.reserved = 0; | |
14496 | esym.asym.index = indexNil; | |
14497 | last = 0; | |
14498 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
14499 | { | |
14500 | esym.asym.sc = sc[i]; | |
14501 | s = bfd_get_section_by_name (abfd, secname[i]); | |
14502 | if (s != NULL) | |
14503 | { | |
14504 | esym.asym.value = s->vma; | |
eea6121a | 14505 | last = s->vma + s->size; |
b49e97c9 TS |
14506 | } |
14507 | else | |
14508 | esym.asym.value = last; | |
14509 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
14510 | secname[i], &esym)) | |
b34976b6 | 14511 | return FALSE; |
b49e97c9 TS |
14512 | } |
14513 | ||
8423293d | 14514 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14515 | { |
14516 | asection *input_section; | |
14517 | bfd *input_bfd; | |
14518 | const struct ecoff_debug_swap *input_swap; | |
14519 | struct ecoff_debug_info input_debug; | |
14520 | char *eraw_src; | |
14521 | char *eraw_end; | |
14522 | ||
14523 | if (p->type != bfd_indirect_link_order) | |
14524 | { | |
14525 | if (p->type == bfd_data_link_order) | |
14526 | continue; | |
14527 | abort (); | |
14528 | } | |
14529 | ||
14530 | input_section = p->u.indirect.section; | |
14531 | input_bfd = input_section->owner; | |
14532 | ||
d5eaccd7 | 14533 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
14534 | { |
14535 | /* I don't know what a non MIPS ELF bfd would be | |
14536 | doing with a .mdebug section, but I don't really | |
14537 | want to deal with it. */ | |
14538 | continue; | |
14539 | } | |
14540 | ||
14541 | input_swap = (get_elf_backend_data (input_bfd) | |
14542 | ->elf_backend_ecoff_debug_swap); | |
14543 | ||
eea6121a | 14544 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
14545 | |
14546 | /* The ECOFF linking code expects that we have already | |
14547 | read in the debugging information and set up an | |
14548 | ecoff_debug_info structure, so we do that now. */ | |
14549 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
14550 | &input_debug)) | |
b34976b6 | 14551 | return FALSE; |
b49e97c9 TS |
14552 | |
14553 | if (! (bfd_ecoff_debug_accumulate | |
14554 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
14555 | &input_debug, input_swap, info))) | |
b34976b6 | 14556 | return FALSE; |
b49e97c9 TS |
14557 | |
14558 | /* Loop through the external symbols. For each one with | |
14559 | interesting information, try to find the symbol in | |
14560 | the linker global hash table and save the information | |
14561 | for the output external symbols. */ | |
14562 | eraw_src = input_debug.external_ext; | |
14563 | eraw_end = (eraw_src | |
14564 | + (input_debug.symbolic_header.iextMax | |
14565 | * input_swap->external_ext_size)); | |
14566 | for (; | |
14567 | eraw_src < eraw_end; | |
14568 | eraw_src += input_swap->external_ext_size) | |
14569 | { | |
14570 | EXTR ext; | |
14571 | const char *name; | |
14572 | struct mips_elf_link_hash_entry *h; | |
14573 | ||
9719ad41 | 14574 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
14575 | if (ext.asym.sc == scNil |
14576 | || ext.asym.sc == scUndefined | |
14577 | || ext.asym.sc == scSUndefined) | |
14578 | continue; | |
14579 | ||
14580 | name = input_debug.ssext + ext.asym.iss; | |
14581 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 14582 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
14583 | if (h == NULL || h->esym.ifd != -2) |
14584 | continue; | |
14585 | ||
14586 | if (ext.ifd != -1) | |
14587 | { | |
14588 | BFD_ASSERT (ext.ifd | |
14589 | < input_debug.symbolic_header.ifdMax); | |
14590 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
14591 | } | |
14592 | ||
14593 | h->esym = ext; | |
14594 | } | |
14595 | ||
14596 | /* Free up the information we just read. */ | |
14597 | free (input_debug.line); | |
14598 | free (input_debug.external_dnr); | |
14599 | free (input_debug.external_pdr); | |
14600 | free (input_debug.external_sym); | |
14601 | free (input_debug.external_opt); | |
14602 | free (input_debug.external_aux); | |
14603 | free (input_debug.ss); | |
14604 | free (input_debug.ssext); | |
14605 | free (input_debug.external_fdr); | |
14606 | free (input_debug.external_rfd); | |
14607 | free (input_debug.external_ext); | |
14608 | ||
14609 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14610 | elf_link_input_bfd ignores this section. */ | |
14611 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14612 | } | |
14613 | ||
0e1862bb | 14614 | if (SGI_COMPAT (abfd) && bfd_link_pic (info)) |
b49e97c9 TS |
14615 | { |
14616 | /* Create .rtproc section. */ | |
87e0a731 | 14617 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
14618 | if (rtproc_sec == NULL) |
14619 | { | |
14620 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
14621 | | SEC_LINKER_CREATED | SEC_READONLY); | |
14622 | ||
87e0a731 AM |
14623 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
14624 | ".rtproc", | |
14625 | flags); | |
b49e97c9 | 14626 | if (rtproc_sec == NULL |
b49e97c9 | 14627 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 14628 | return FALSE; |
b49e97c9 TS |
14629 | } |
14630 | ||
14631 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
14632 | info, rtproc_sec, | |
14633 | &debug)) | |
b34976b6 | 14634 | return FALSE; |
b49e97c9 TS |
14635 | } |
14636 | ||
14637 | /* Build the external symbol information. */ | |
14638 | einfo.abfd = abfd; | |
14639 | einfo.info = info; | |
14640 | einfo.debug = &debug; | |
14641 | einfo.swap = swap; | |
b34976b6 | 14642 | einfo.failed = FALSE; |
b49e97c9 | 14643 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 14644 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 14645 | if (einfo.failed) |
b34976b6 | 14646 | return FALSE; |
b49e97c9 TS |
14647 | |
14648 | /* Set the size of the .mdebug section. */ | |
eea6121a | 14649 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
14650 | |
14651 | /* Skip this section later on (I don't think this currently | |
14652 | matters, but someday it might). */ | |
8423293d | 14653 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14654 | |
14655 | mdebug_sec = o; | |
14656 | } | |
14657 | ||
0112cd26 | 14658 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
14659 | { |
14660 | const char *subname; | |
14661 | unsigned int c; | |
14662 | Elf32_gptab *tab; | |
14663 | Elf32_External_gptab *ext_tab; | |
14664 | unsigned int j; | |
14665 | ||
14666 | /* The .gptab.sdata and .gptab.sbss sections hold | |
14667 | information describing how the small data area would | |
14668 | change depending upon the -G switch. These sections | |
14669 | not used in executables files. */ | |
0e1862bb | 14670 | if (! bfd_link_relocatable (info)) |
b49e97c9 | 14671 | { |
8423293d | 14672 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14673 | { |
14674 | asection *input_section; | |
14675 | ||
14676 | if (p->type != bfd_indirect_link_order) | |
14677 | { | |
14678 | if (p->type == bfd_data_link_order) | |
14679 | continue; | |
14680 | abort (); | |
14681 | } | |
14682 | ||
14683 | input_section = p->u.indirect.section; | |
14684 | ||
14685 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14686 | elf_link_input_bfd ignores this section. */ | |
14687 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14688 | } | |
14689 | ||
14690 | /* Skip this section later on (I don't think this | |
14691 | currently matters, but someday it might). */ | |
8423293d | 14692 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14693 | |
14694 | /* Really remove the section. */ | |
5daa8fe7 | 14695 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
14696 | --abfd->section_count; |
14697 | ||
14698 | continue; | |
14699 | } | |
14700 | ||
14701 | /* There is one gptab for initialized data, and one for | |
14702 | uninitialized data. */ | |
14703 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
14704 | gptab_data_sec = o; | |
14705 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
14706 | gptab_bss_sec = o; | |
14707 | else | |
14708 | { | |
4eca0228 | 14709 | _bfd_error_handler |
695344c0 | 14710 | /* xgettext:c-format */ |
871b3ab2 | 14711 | (_("%pB: illegal section name `%pA'"), abfd, o); |
b49e97c9 | 14712 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 14713 | return FALSE; |
b49e97c9 TS |
14714 | } |
14715 | ||
14716 | /* The linker script always combines .gptab.data and | |
14717 | .gptab.sdata into .gptab.sdata, and likewise for | |
14718 | .gptab.bss and .gptab.sbss. It is possible that there is | |
14719 | no .sdata or .sbss section in the output file, in which | |
14720 | case we must change the name of the output section. */ | |
14721 | subname = o->name + sizeof ".gptab" - 1; | |
14722 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
14723 | { | |
14724 | if (o == gptab_data_sec) | |
14725 | o->name = ".gptab.data"; | |
14726 | else | |
14727 | o->name = ".gptab.bss"; | |
14728 | subname = o->name + sizeof ".gptab" - 1; | |
14729 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
14730 | } | |
14731 | ||
14732 | /* Set up the first entry. */ | |
14733 | c = 1; | |
14734 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 14735 | tab = bfd_malloc (amt); |
b49e97c9 | 14736 | if (tab == NULL) |
b34976b6 | 14737 | return FALSE; |
b49e97c9 TS |
14738 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
14739 | tab[0].gt_header.gt_unused = 0; | |
14740 | ||
14741 | /* Combine the input sections. */ | |
8423293d | 14742 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14743 | { |
14744 | asection *input_section; | |
14745 | bfd *input_bfd; | |
14746 | bfd_size_type size; | |
14747 | unsigned long last; | |
14748 | bfd_size_type gpentry; | |
14749 | ||
14750 | if (p->type != bfd_indirect_link_order) | |
14751 | { | |
14752 | if (p->type == bfd_data_link_order) | |
14753 | continue; | |
14754 | abort (); | |
14755 | } | |
14756 | ||
14757 | input_section = p->u.indirect.section; | |
14758 | input_bfd = input_section->owner; | |
14759 | ||
14760 | /* Combine the gptab entries for this input section one | |
14761 | by one. We know that the input gptab entries are | |
14762 | sorted by ascending -G value. */ | |
eea6121a | 14763 | size = input_section->size; |
b49e97c9 TS |
14764 | last = 0; |
14765 | for (gpentry = sizeof (Elf32_External_gptab); | |
14766 | gpentry < size; | |
14767 | gpentry += sizeof (Elf32_External_gptab)) | |
14768 | { | |
14769 | Elf32_External_gptab ext_gptab; | |
14770 | Elf32_gptab int_gptab; | |
14771 | unsigned long val; | |
14772 | unsigned long add; | |
b34976b6 | 14773 | bfd_boolean exact; |
b49e97c9 TS |
14774 | unsigned int look; |
14775 | ||
14776 | if (! (bfd_get_section_contents | |
9719ad41 RS |
14777 | (input_bfd, input_section, &ext_gptab, gpentry, |
14778 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
14779 | { |
14780 | free (tab); | |
b34976b6 | 14781 | return FALSE; |
b49e97c9 TS |
14782 | } |
14783 | ||
14784 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
14785 | &int_gptab); | |
14786 | val = int_gptab.gt_entry.gt_g_value; | |
14787 | add = int_gptab.gt_entry.gt_bytes - last; | |
14788 | ||
b34976b6 | 14789 | exact = FALSE; |
b49e97c9 TS |
14790 | for (look = 1; look < c; look++) |
14791 | { | |
14792 | if (tab[look].gt_entry.gt_g_value >= val) | |
14793 | tab[look].gt_entry.gt_bytes += add; | |
14794 | ||
14795 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 14796 | exact = TRUE; |
b49e97c9 TS |
14797 | } |
14798 | ||
14799 | if (! exact) | |
14800 | { | |
14801 | Elf32_gptab *new_tab; | |
14802 | unsigned int max; | |
14803 | ||
14804 | /* We need a new table entry. */ | |
14805 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 14806 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
14807 | if (new_tab == NULL) |
14808 | { | |
14809 | free (tab); | |
b34976b6 | 14810 | return FALSE; |
b49e97c9 TS |
14811 | } |
14812 | tab = new_tab; | |
14813 | tab[c].gt_entry.gt_g_value = val; | |
14814 | tab[c].gt_entry.gt_bytes = add; | |
14815 | ||
14816 | /* Merge in the size for the next smallest -G | |
14817 | value, since that will be implied by this new | |
14818 | value. */ | |
14819 | max = 0; | |
14820 | for (look = 1; look < c; look++) | |
14821 | { | |
14822 | if (tab[look].gt_entry.gt_g_value < val | |
14823 | && (max == 0 | |
14824 | || (tab[look].gt_entry.gt_g_value | |
14825 | > tab[max].gt_entry.gt_g_value))) | |
14826 | max = look; | |
14827 | } | |
14828 | if (max != 0) | |
14829 | tab[c].gt_entry.gt_bytes += | |
14830 | tab[max].gt_entry.gt_bytes; | |
14831 | ||
14832 | ++c; | |
14833 | } | |
14834 | ||
14835 | last = int_gptab.gt_entry.gt_bytes; | |
14836 | } | |
14837 | ||
14838 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14839 | elf_link_input_bfd ignores this section. */ | |
14840 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14841 | } | |
14842 | ||
14843 | /* The table must be sorted by -G value. */ | |
14844 | if (c > 2) | |
14845 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
14846 | ||
14847 | /* Swap out the table. */ | |
14848 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 14849 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
14850 | if (ext_tab == NULL) |
14851 | { | |
14852 | free (tab); | |
b34976b6 | 14853 | return FALSE; |
b49e97c9 TS |
14854 | } |
14855 | ||
14856 | for (j = 0; j < c; j++) | |
14857 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
14858 | free (tab); | |
14859 | ||
eea6121a | 14860 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
14861 | o->contents = (bfd_byte *) ext_tab; |
14862 | ||
14863 | /* Skip this section later on (I don't think this currently | |
14864 | matters, but someday it might). */ | |
8423293d | 14865 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14866 | } |
14867 | } | |
14868 | ||
14869 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 14870 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 14871 | return FALSE; |
b49e97c9 TS |
14872 | |
14873 | /* Now write out the computed sections. */ | |
14874 | ||
351cdf24 MF |
14875 | if (abiflags_sec != NULL) |
14876 | { | |
14877 | Elf_External_ABIFlags_v0 ext; | |
14878 | Elf_Internal_ABIFlags_v0 *abiflags; | |
14879 | ||
14880 | abiflags = &mips_elf_tdata (abfd)->abiflags; | |
14881 | ||
14882 | /* Set up the abiflags if no valid input sections were found. */ | |
14883 | if (!mips_elf_tdata (abfd)->abiflags_valid) | |
14884 | { | |
14885 | infer_mips_abiflags (abfd, abiflags); | |
14886 | mips_elf_tdata (abfd)->abiflags_valid = TRUE; | |
14887 | } | |
14888 | bfd_mips_elf_swap_abiflags_v0_out (abfd, abiflags, &ext); | |
14889 | if (! bfd_set_section_contents (abfd, abiflags_sec, &ext, 0, sizeof ext)) | |
14890 | return FALSE; | |
14891 | } | |
14892 | ||
9719ad41 | 14893 | if (reginfo_sec != NULL) |
b49e97c9 TS |
14894 | { |
14895 | Elf32_External_RegInfo ext; | |
14896 | ||
14897 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 14898 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 14899 | return FALSE; |
b49e97c9 TS |
14900 | } |
14901 | ||
9719ad41 | 14902 | if (mdebug_sec != NULL) |
b49e97c9 TS |
14903 | { |
14904 | BFD_ASSERT (abfd->output_has_begun); | |
14905 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
14906 | swap, info, | |
14907 | mdebug_sec->filepos)) | |
b34976b6 | 14908 | return FALSE; |
b49e97c9 TS |
14909 | |
14910 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
14911 | } | |
14912 | ||
9719ad41 | 14913 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
14914 | { |
14915 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
14916 | gptab_data_sec->contents, | |
eea6121a | 14917 | 0, gptab_data_sec->size)) |
b34976b6 | 14918 | return FALSE; |
b49e97c9 TS |
14919 | } |
14920 | ||
9719ad41 | 14921 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
14922 | { |
14923 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
14924 | gptab_bss_sec->contents, | |
eea6121a | 14925 | 0, gptab_bss_sec->size)) |
b34976b6 | 14926 | return FALSE; |
b49e97c9 TS |
14927 | } |
14928 | ||
14929 | if (SGI_COMPAT (abfd)) | |
14930 | { | |
14931 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
14932 | if (rtproc_sec != NULL) | |
14933 | { | |
14934 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
14935 | rtproc_sec->contents, | |
eea6121a | 14936 | 0, rtproc_sec->size)) |
b34976b6 | 14937 | return FALSE; |
b49e97c9 TS |
14938 | } |
14939 | } | |
14940 | ||
b34976b6 | 14941 | return TRUE; |
b49e97c9 TS |
14942 | } |
14943 | \f | |
b2e9744f MR |
14944 | /* Merge object file header flags from IBFD into OBFD. Raise an error |
14945 | if there are conflicting settings. */ | |
14946 | ||
14947 | static bfd_boolean | |
50e03d47 | 14948 | mips_elf_merge_obj_e_flags (bfd *ibfd, struct bfd_link_info *info) |
b2e9744f | 14949 | { |
50e03d47 | 14950 | bfd *obfd = info->output_bfd; |
b2e9744f MR |
14951 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); |
14952 | flagword old_flags; | |
14953 | flagword new_flags; | |
14954 | bfd_boolean ok; | |
14955 | ||
14956 | new_flags = elf_elfheader (ibfd)->e_flags; | |
14957 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
14958 | old_flags = elf_elfheader (obfd)->e_flags; | |
14959 | ||
14960 | /* Check flag compatibility. */ | |
14961 | ||
14962 | new_flags &= ~EF_MIPS_NOREORDER; | |
14963 | old_flags &= ~EF_MIPS_NOREORDER; | |
14964 | ||
14965 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It | |
14966 | doesn't seem to matter. */ | |
14967 | new_flags &= ~EF_MIPS_XGOT; | |
14968 | old_flags &= ~EF_MIPS_XGOT; | |
14969 | ||
14970 | /* MIPSpro generates ucode info in n64 objects. Again, we should | |
14971 | just be able to ignore this. */ | |
14972 | new_flags &= ~EF_MIPS_UCODE; | |
14973 | old_flags &= ~EF_MIPS_UCODE; | |
14974 | ||
14975 | /* DSOs should only be linked with CPIC code. */ | |
14976 | if ((ibfd->flags & DYNAMIC) != 0) | |
14977 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
14978 | ||
14979 | if (new_flags == old_flags) | |
14980 | return TRUE; | |
14981 | ||
14982 | ok = TRUE; | |
14983 | ||
14984 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) | |
14985 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
14986 | { | |
4eca0228 | 14987 | _bfd_error_handler |
871b3ab2 | 14988 | (_("%pB: warning: linking abicalls files with non-abicalls files"), |
b2e9744f MR |
14989 | ibfd); |
14990 | ok = TRUE; | |
14991 | } | |
14992 | ||
14993 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) | |
14994 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
14995 | if (! (new_flags & EF_MIPS_PIC)) | |
14996 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
14997 | ||
14998 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
14999 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
15000 | ||
15001 | /* Compare the ISAs. */ | |
15002 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
15003 | { | |
4eca0228 | 15004 | _bfd_error_handler |
871b3ab2 | 15005 | (_("%pB: linking 32-bit code with 64-bit code"), |
b2e9744f MR |
15006 | ibfd); |
15007 | ok = FALSE; | |
15008 | } | |
15009 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
15010 | { | |
15011 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
15012 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
15013 | { | |
15014 | /* Copy the architecture info from IBFD to OBFD. Also copy | |
15015 | the 32-bit flag (if set) so that we continue to recognise | |
15016 | OBFD as a 32-bit binary. */ | |
15017 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
15018 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
15019 | elf_elfheader (obfd)->e_flags | |
15020 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15021 | ||
15022 | /* Update the ABI flags isa_level, isa_rev, isa_ext fields. */ | |
15023 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); | |
15024 | ||
15025 | /* Copy across the ABI flags if OBFD doesn't use them | |
15026 | and if that was what caused us to treat IBFD as 32-bit. */ | |
15027 | if ((old_flags & EF_MIPS_ABI) == 0 | |
15028 | && mips_32bit_flags_p (new_flags) | |
15029 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
15030 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
15031 | } | |
15032 | else | |
15033 | { | |
15034 | /* The ISAs aren't compatible. */ | |
4eca0228 | 15035 | _bfd_error_handler |
695344c0 | 15036 | /* xgettext:c-format */ |
871b3ab2 | 15037 | (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15038 | ibfd, |
15039 | bfd_printable_name (ibfd), | |
15040 | bfd_printable_name (obfd)); | |
15041 | ok = FALSE; | |
15042 | } | |
15043 | } | |
15044 | ||
15045 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15046 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15047 | ||
15048 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
15049 | does set EI_CLASS differently from any 32-bit ABI. */ | |
15050 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
15051 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15052 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15053 | { | |
15054 | /* Only error if both are set (to different values). */ | |
15055 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
15056 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15057 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15058 | { | |
4eca0228 | 15059 | _bfd_error_handler |
695344c0 | 15060 | /* xgettext:c-format */ |
871b3ab2 | 15061 | (_("%pB: ABI mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15062 | ibfd, |
15063 | elf_mips_abi_name (ibfd), | |
15064 | elf_mips_abi_name (obfd)); | |
15065 | ok = FALSE; | |
15066 | } | |
15067 | new_flags &= ~EF_MIPS_ABI; | |
15068 | old_flags &= ~EF_MIPS_ABI; | |
15069 | } | |
15070 | ||
15071 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together | |
15072 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
15073 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
15074 | { | |
15075 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15076 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15077 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
15078 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
15079 | int micro_mis = old_m16 && new_micro; | |
15080 | int m16_mis = old_micro && new_m16; | |
15081 | ||
15082 | if (m16_mis || micro_mis) | |
15083 | { | |
4eca0228 | 15084 | _bfd_error_handler |
695344c0 | 15085 | /* xgettext:c-format */ |
871b3ab2 | 15086 | (_("%pB: ASE mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15087 | ibfd, |
15088 | m16_mis ? "MIPS16" : "microMIPS", | |
15089 | m16_mis ? "microMIPS" : "MIPS16"); | |
15090 | ok = FALSE; | |
15091 | } | |
15092 | ||
15093 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
15094 | ||
15095 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
15096 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
15097 | } | |
15098 | ||
15099 | /* Compare NaN encodings. */ | |
15100 | if ((new_flags & EF_MIPS_NAN2008) != (old_flags & EF_MIPS_NAN2008)) | |
15101 | { | |
695344c0 | 15102 | /* xgettext:c-format */ |
871b3ab2 | 15103 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15104 | ibfd, |
15105 | (new_flags & EF_MIPS_NAN2008 | |
15106 | ? "-mnan=2008" : "-mnan=legacy"), | |
15107 | (old_flags & EF_MIPS_NAN2008 | |
15108 | ? "-mnan=2008" : "-mnan=legacy")); | |
15109 | ok = FALSE; | |
15110 | new_flags &= ~EF_MIPS_NAN2008; | |
15111 | old_flags &= ~EF_MIPS_NAN2008; | |
15112 | } | |
15113 | ||
15114 | /* Compare FP64 state. */ | |
15115 | if ((new_flags & EF_MIPS_FP64) != (old_flags & EF_MIPS_FP64)) | |
15116 | { | |
695344c0 | 15117 | /* xgettext:c-format */ |
871b3ab2 | 15118 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15119 | ibfd, |
15120 | (new_flags & EF_MIPS_FP64 | |
15121 | ? "-mfp64" : "-mfp32"), | |
15122 | (old_flags & EF_MIPS_FP64 | |
15123 | ? "-mfp64" : "-mfp32")); | |
15124 | ok = FALSE; | |
15125 | new_flags &= ~EF_MIPS_FP64; | |
15126 | old_flags &= ~EF_MIPS_FP64; | |
15127 | } | |
15128 | ||
15129 | /* Warn about any other mismatches */ | |
15130 | if (new_flags != old_flags) | |
15131 | { | |
695344c0 | 15132 | /* xgettext:c-format */ |
4eca0228 | 15133 | _bfd_error_handler |
871b3ab2 | 15134 | (_("%pB: uses different e_flags (%#x) fields than previous modules " |
d42c267e AM |
15135 | "(%#x)"), |
15136 | ibfd, new_flags, old_flags); | |
b2e9744f MR |
15137 | ok = FALSE; |
15138 | } | |
15139 | ||
15140 | return ok; | |
15141 | } | |
15142 | ||
2cf19d5c JM |
15143 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
15144 | there are conflicting attributes. */ | |
15145 | static bfd_boolean | |
50e03d47 | 15146 | mips_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
2cf19d5c | 15147 | { |
50e03d47 | 15148 | bfd *obfd = info->output_bfd; |
2cf19d5c JM |
15149 | obj_attribute *in_attr; |
15150 | obj_attribute *out_attr; | |
6ae68ba3 | 15151 | bfd *abi_fp_bfd; |
b60bf9be | 15152 | bfd *abi_msa_bfd; |
6ae68ba3 MR |
15153 | |
15154 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
15155 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
d929bc19 | 15156 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != Val_GNU_MIPS_ABI_FP_ANY) |
6ae68ba3 | 15157 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; |
2cf19d5c | 15158 | |
b60bf9be CF |
15159 | abi_msa_bfd = mips_elf_tdata (obfd)->abi_msa_bfd; |
15160 | if (!abi_msa_bfd | |
15161 | && in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15162 | mips_elf_tdata (obfd)->abi_msa_bfd = ibfd; | |
15163 | ||
2cf19d5c JM |
15164 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
15165 | { | |
15166 | /* This is the first object. Copy the attributes. */ | |
15167 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
15168 | ||
15169 | /* Use the Tag_null value to indicate the attributes have been | |
15170 | initialized. */ | |
15171 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
15172 | ||
15173 | return TRUE; | |
15174 | } | |
15175 | ||
15176 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
15177 | non-conflicting ones. */ | |
2cf19d5c JM |
15178 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
15179 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
15180 | { | |
757a636f | 15181 | int out_fp, in_fp; |
6ae68ba3 | 15182 | |
757a636f RS |
15183 | out_fp = out_attr[Tag_GNU_MIPS_ABI_FP].i; |
15184 | in_fp = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15185 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
15186 | if (out_fp == Val_GNU_MIPS_ABI_FP_ANY) | |
15187 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_fp; | |
351cdf24 MF |
15188 | else if (out_fp == Val_GNU_MIPS_ABI_FP_XX |
15189 | && (in_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15190 | || in_fp == Val_GNU_MIPS_ABI_FP_64 | |
15191 | || in_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15192 | { | |
15193 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15194 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15195 | } | |
15196 | else if (in_fp == Val_GNU_MIPS_ABI_FP_XX | |
15197 | && (out_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15198 | || out_fp == Val_GNU_MIPS_ABI_FP_64 | |
15199 | || out_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15200 | /* Keep the current setting. */; | |
15201 | else if (out_fp == Val_GNU_MIPS_ABI_FP_64A | |
15202 | && in_fp == Val_GNU_MIPS_ABI_FP_64) | |
15203 | { | |
15204 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15205 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15206 | } | |
15207 | else if (in_fp == Val_GNU_MIPS_ABI_FP_64A | |
15208 | && out_fp == Val_GNU_MIPS_ABI_FP_64) | |
15209 | /* Keep the current setting. */; | |
757a636f RS |
15210 | else if (in_fp != Val_GNU_MIPS_ABI_FP_ANY) |
15211 | { | |
15212 | const char *out_string, *in_string; | |
6ae68ba3 | 15213 | |
757a636f RS |
15214 | out_string = _bfd_mips_fp_abi_string (out_fp); |
15215 | in_string = _bfd_mips_fp_abi_string (in_fp); | |
15216 | /* First warn about cases involving unrecognised ABIs. */ | |
15217 | if (!out_string && !in_string) | |
695344c0 | 15218 | /* xgettext:c-format */ |
757a636f | 15219 | _bfd_error_handler |
2c1c9679 | 15220 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15221 | "(set by %pB), %pB uses unknown floating point ABI %d"), |
c08bb8dd | 15222 | obfd, out_fp, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15223 | else if (!out_string) |
15224 | _bfd_error_handler | |
695344c0 | 15225 | /* xgettext:c-format */ |
2c1c9679 | 15226 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15227 | "(set by %pB), %pB uses %s"), |
c08bb8dd | 15228 | obfd, out_fp, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15229 | else if (!in_string) |
15230 | _bfd_error_handler | |
695344c0 | 15231 | /* xgettext:c-format */ |
2c1c9679 | 15232 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15233 | "%pB uses unknown floating point ABI %d"), |
c08bb8dd | 15234 | obfd, out_string, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15235 | else |
15236 | { | |
15237 | /* If one of the bfds is soft-float, the other must be | |
15238 | hard-float. The exact choice of hard-float ABI isn't | |
15239 | really relevant to the error message. */ | |
15240 | if (in_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15241 | out_string = "-mhard-float"; | |
15242 | else if (out_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15243 | in_string = "-mhard-float"; | |
15244 | _bfd_error_handler | |
695344c0 | 15245 | /* xgettext:c-format */ |
2c1c9679 | 15246 | (_("warning: %pB uses %s (set by %pB), %pB uses %s"), |
c08bb8dd | 15247 | obfd, out_string, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15248 | } |
15249 | } | |
2cf19d5c JM |
15250 | } |
15251 | ||
b60bf9be CF |
15252 | /* Check for conflicting Tag_GNU_MIPS_ABI_MSA attributes and merge |
15253 | non-conflicting ones. */ | |
15254 | if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15255 | { | |
15256 | out_attr[Tag_GNU_MIPS_ABI_MSA].type = 1; | |
15257 | if (out_attr[Tag_GNU_MIPS_ABI_MSA].i == Val_GNU_MIPS_ABI_MSA_ANY) | |
15258 | out_attr[Tag_GNU_MIPS_ABI_MSA].i = in_attr[Tag_GNU_MIPS_ABI_MSA].i; | |
15259 | else if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15260 | switch (out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15261 | { | |
15262 | case Val_GNU_MIPS_ABI_MSA_128: | |
15263 | _bfd_error_handler | |
695344c0 | 15264 | /* xgettext:c-format */ |
2c1c9679 | 15265 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15266 | "%pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15267 | obfd, "-mmsa", abi_msa_bfd, |
15268 | ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15269 | break; |
15270 | ||
15271 | default: | |
15272 | switch (in_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15273 | { | |
15274 | case Val_GNU_MIPS_ABI_MSA_128: | |
15275 | _bfd_error_handler | |
695344c0 | 15276 | /* xgettext:c-format */ |
2c1c9679 | 15277 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15278 | "(set by %pB), %pB uses %s"), |
c08bb8dd AM |
15279 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15280 | abi_msa_bfd, ibfd, "-mmsa"); | |
b60bf9be CF |
15281 | break; |
15282 | ||
15283 | default: | |
15284 | _bfd_error_handler | |
695344c0 | 15285 | /* xgettext:c-format */ |
2c1c9679 | 15286 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15287 | "(set by %pB), %pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15288 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15289 | abi_msa_bfd, ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15290 | break; |
15291 | } | |
15292 | } | |
15293 | } | |
15294 | ||
2cf19d5c | 15295 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 15296 | return _bfd_elf_merge_object_attributes (ibfd, info); |
2cf19d5c JM |
15297 | } |
15298 | ||
a3dc0a7f MR |
15299 | /* Merge object ABI flags from IBFD into OBFD. Raise an error if |
15300 | there are conflicting settings. */ | |
15301 | ||
15302 | static bfd_boolean | |
15303 | mips_elf_merge_obj_abiflags (bfd *ibfd, bfd *obfd) | |
15304 | { | |
15305 | obj_attribute *out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
15306 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); | |
15307 | struct mips_elf_obj_tdata *in_tdata = mips_elf_tdata (ibfd); | |
15308 | ||
15309 | /* Update the output abiflags fp_abi using the computed fp_abi. */ | |
15310 | out_tdata->abiflags.fp_abi = out_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15311 | ||
15312 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
15313 | /* Merge abiflags. */ | |
15314 | out_tdata->abiflags.isa_level = max (out_tdata->abiflags.isa_level, | |
15315 | in_tdata->abiflags.isa_level); | |
15316 | out_tdata->abiflags.isa_rev = max (out_tdata->abiflags.isa_rev, | |
15317 | in_tdata->abiflags.isa_rev); | |
15318 | out_tdata->abiflags.gpr_size = max (out_tdata->abiflags.gpr_size, | |
15319 | in_tdata->abiflags.gpr_size); | |
15320 | out_tdata->abiflags.cpr1_size = max (out_tdata->abiflags.cpr1_size, | |
15321 | in_tdata->abiflags.cpr1_size); | |
15322 | out_tdata->abiflags.cpr2_size = max (out_tdata->abiflags.cpr2_size, | |
15323 | in_tdata->abiflags.cpr2_size); | |
15324 | #undef max | |
15325 | out_tdata->abiflags.ases |= in_tdata->abiflags.ases; | |
15326 | out_tdata->abiflags.flags1 |= in_tdata->abiflags.flags1; | |
15327 | ||
15328 | return TRUE; | |
15329 | } | |
15330 | ||
b49e97c9 TS |
15331 | /* Merge backend specific data from an object file to the output |
15332 | object file when linking. */ | |
15333 | ||
b34976b6 | 15334 | bfd_boolean |
50e03d47 | 15335 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
b49e97c9 | 15336 | { |
50e03d47 | 15337 | bfd *obfd = info->output_bfd; |
cf8502c1 MR |
15338 | struct mips_elf_obj_tdata *out_tdata; |
15339 | struct mips_elf_obj_tdata *in_tdata; | |
b34976b6 | 15340 | bfd_boolean null_input_bfd = TRUE; |
b49e97c9 | 15341 | asection *sec; |
d537eeb5 | 15342 | bfd_boolean ok; |
b49e97c9 | 15343 | |
58238693 | 15344 | /* Check if we have the same endianness. */ |
50e03d47 | 15345 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
aa701218 | 15346 | { |
4eca0228 | 15347 | _bfd_error_handler |
871b3ab2 | 15348 | (_("%pB: endianness incompatible with that of the selected emulation"), |
d003868e | 15349 | ibfd); |
aa701218 AO |
15350 | return FALSE; |
15351 | } | |
b49e97c9 | 15352 | |
d5eaccd7 | 15353 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 15354 | return TRUE; |
b49e97c9 | 15355 | |
cf8502c1 MR |
15356 | in_tdata = mips_elf_tdata (ibfd); |
15357 | out_tdata = mips_elf_tdata (obfd); | |
15358 | ||
aa701218 AO |
15359 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
15360 | { | |
4eca0228 | 15361 | _bfd_error_handler |
871b3ab2 | 15362 | (_("%pB: ABI is incompatible with that of the selected emulation"), |
d003868e | 15363 | ibfd); |
aa701218 AO |
15364 | return FALSE; |
15365 | } | |
15366 | ||
23ba6f18 MR |
15367 | /* Check to see if the input BFD actually contains any sections. If not, |
15368 | then it has no attributes, and its flags may not have been initialized | |
15369 | either, but it cannot actually cause any incompatibility. */ | |
351cdf24 MF |
15370 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
15371 | { | |
15372 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
15373 | which are automatically generated by gas. Also ignore fake | |
15374 | (s)common sections, since merely defining a common symbol does | |
15375 | not affect compatibility. */ | |
15376 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
15377 | && strcmp (sec->name, ".reginfo") | |
15378 | && strcmp (sec->name, ".mdebug") | |
15379 | && (sec->size != 0 | |
15380 | || (strcmp (sec->name, ".text") | |
15381 | && strcmp (sec->name, ".data") | |
15382 | && strcmp (sec->name, ".bss")))) | |
15383 | { | |
15384 | null_input_bfd = FALSE; | |
15385 | break; | |
15386 | } | |
15387 | } | |
15388 | if (null_input_bfd) | |
15389 | return TRUE; | |
15390 | ||
28d45e28 | 15391 | /* Populate abiflags using existing information. */ |
23ba6f18 MR |
15392 | if (in_tdata->abiflags_valid) |
15393 | { | |
15394 | obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
28d45e28 MR |
15395 | Elf_Internal_ABIFlags_v0 in_abiflags; |
15396 | Elf_Internal_ABIFlags_v0 abiflags; | |
15397 | ||
15398 | /* Set up the FP ABI attribute from the abiflags if it is not already | |
07d6d2b8 | 15399 | set. */ |
23ba6f18 | 15400 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY) |
07d6d2b8 | 15401 | in_attr[Tag_GNU_MIPS_ABI_FP].i = in_tdata->abiflags.fp_abi; |
23ba6f18 | 15402 | |
351cdf24 | 15403 | infer_mips_abiflags (ibfd, &abiflags); |
cf8502c1 | 15404 | in_abiflags = in_tdata->abiflags; |
351cdf24 MF |
15405 | |
15406 | /* It is not possible to infer the correct ISA revision | |
07d6d2b8 | 15407 | for R3 or R5 so drop down to R2 for the checks. */ |
351cdf24 MF |
15408 | if (in_abiflags.isa_rev == 3 || in_abiflags.isa_rev == 5) |
15409 | in_abiflags.isa_rev = 2; | |
15410 | ||
c97c330b MF |
15411 | if (LEVEL_REV (in_abiflags.isa_level, in_abiflags.isa_rev) |
15412 | < LEVEL_REV (abiflags.isa_level, abiflags.isa_rev)) | |
4eca0228 | 15413 | _bfd_error_handler |
2c1c9679 | 15414 | (_("%pB: warning: inconsistent ISA between e_flags and " |
351cdf24 MF |
15415 | ".MIPS.abiflags"), ibfd); |
15416 | if (abiflags.fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
15417 | && in_abiflags.fp_abi != abiflags.fp_abi) | |
4eca0228 | 15418 | _bfd_error_handler |
2c1c9679 | 15419 | (_("%pB: warning: inconsistent FP ABI between .gnu.attributes and " |
351cdf24 MF |
15420 | ".MIPS.abiflags"), ibfd); |
15421 | if ((in_abiflags.ases & abiflags.ases) != abiflags.ases) | |
4eca0228 | 15422 | _bfd_error_handler |
2c1c9679 | 15423 | (_("%pB: warning: inconsistent ASEs between e_flags and " |
351cdf24 | 15424 | ".MIPS.abiflags"), ibfd); |
c97c330b MF |
15425 | /* The isa_ext is allowed to be an extension of what can be inferred |
15426 | from e_flags. */ | |
15427 | if (!mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags.isa_ext), | |
15428 | bfd_mips_isa_ext_mach (in_abiflags.isa_ext))) | |
4eca0228 | 15429 | _bfd_error_handler |
2c1c9679 | 15430 | (_("%pB: warning: inconsistent ISA extensions between e_flags and " |
351cdf24 MF |
15431 | ".MIPS.abiflags"), ibfd); |
15432 | if (in_abiflags.flags2 != 0) | |
4eca0228 | 15433 | _bfd_error_handler |
2c1c9679 | 15434 | (_("%pB: warning: unexpected flag in the flags2 field of " |
351cdf24 | 15435 | ".MIPS.abiflags (0x%lx)"), ibfd, |
d42c267e | 15436 | in_abiflags.flags2); |
351cdf24 | 15437 | } |
28d45e28 MR |
15438 | else |
15439 | { | |
15440 | infer_mips_abiflags (ibfd, &in_tdata->abiflags); | |
15441 | in_tdata->abiflags_valid = TRUE; | |
15442 | } | |
15443 | ||
cf8502c1 | 15444 | if (!out_tdata->abiflags_valid) |
351cdf24 MF |
15445 | { |
15446 | /* Copy input abiflags if output abiflags are not already valid. */ | |
cf8502c1 MR |
15447 | out_tdata->abiflags = in_tdata->abiflags; |
15448 | out_tdata->abiflags_valid = TRUE; | |
351cdf24 | 15449 | } |
b49e97c9 TS |
15450 | |
15451 | if (! elf_flags_init (obfd)) | |
15452 | { | |
b34976b6 | 15453 | elf_flags_init (obfd) = TRUE; |
351cdf24 | 15454 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b49e97c9 TS |
15455 | elf_elfheader (obfd)->e_ident[EI_CLASS] |
15456 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
15457 | ||
15458 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 15459 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 15460 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 15461 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
15462 | { |
15463 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
15464 | bfd_get_mach (ibfd))) | |
b34976b6 | 15465 | return FALSE; |
351cdf24 MF |
15466 | |
15467 | /* Update the ABI flags isa_level, isa_rev and isa_ext fields. */ | |
cf8502c1 | 15468 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); |
b49e97c9 TS |
15469 | } |
15470 | ||
d537eeb5 | 15471 | ok = TRUE; |
b49e97c9 | 15472 | } |
d537eeb5 | 15473 | else |
50e03d47 | 15474 | ok = mips_elf_merge_obj_e_flags (ibfd, info); |
d537eeb5 | 15475 | |
50e03d47 | 15476 | ok = mips_elf_merge_obj_attributes (ibfd, info) && ok; |
b49e97c9 | 15477 | |
a3dc0a7f | 15478 | ok = mips_elf_merge_obj_abiflags (ibfd, obfd) && ok; |
351cdf24 | 15479 | |
d537eeb5 | 15480 | if (!ok) |
b49e97c9 TS |
15481 | { |
15482 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15483 | return FALSE; |
b49e97c9 TS |
15484 | } |
15485 | ||
b34976b6 | 15486 | return TRUE; |
b49e97c9 TS |
15487 | } |
15488 | ||
15489 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
15490 | ||
b34976b6 | 15491 | bfd_boolean |
9719ad41 | 15492 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
15493 | { |
15494 | BFD_ASSERT (!elf_flags_init (abfd) | |
15495 | || elf_elfheader (abfd)->e_flags == flags); | |
15496 | ||
15497 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
15498 | elf_flags_init (abfd) = TRUE; |
15499 | return TRUE; | |
b49e97c9 TS |
15500 | } |
15501 | ||
ad9563d6 CM |
15502 | char * |
15503 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
15504 | { | |
15505 | switch (dtag) | |
15506 | { | |
15507 | default: return ""; | |
15508 | case DT_MIPS_RLD_VERSION: | |
15509 | return "MIPS_RLD_VERSION"; | |
15510 | case DT_MIPS_TIME_STAMP: | |
15511 | return "MIPS_TIME_STAMP"; | |
15512 | case DT_MIPS_ICHECKSUM: | |
15513 | return "MIPS_ICHECKSUM"; | |
15514 | case DT_MIPS_IVERSION: | |
15515 | return "MIPS_IVERSION"; | |
15516 | case DT_MIPS_FLAGS: | |
15517 | return "MIPS_FLAGS"; | |
15518 | case DT_MIPS_BASE_ADDRESS: | |
15519 | return "MIPS_BASE_ADDRESS"; | |
15520 | case DT_MIPS_MSYM: | |
15521 | return "MIPS_MSYM"; | |
15522 | case DT_MIPS_CONFLICT: | |
15523 | return "MIPS_CONFLICT"; | |
15524 | case DT_MIPS_LIBLIST: | |
15525 | return "MIPS_LIBLIST"; | |
15526 | case DT_MIPS_LOCAL_GOTNO: | |
15527 | return "MIPS_LOCAL_GOTNO"; | |
15528 | case DT_MIPS_CONFLICTNO: | |
15529 | return "MIPS_CONFLICTNO"; | |
15530 | case DT_MIPS_LIBLISTNO: | |
15531 | return "MIPS_LIBLISTNO"; | |
15532 | case DT_MIPS_SYMTABNO: | |
15533 | return "MIPS_SYMTABNO"; | |
15534 | case DT_MIPS_UNREFEXTNO: | |
15535 | return "MIPS_UNREFEXTNO"; | |
15536 | case DT_MIPS_GOTSYM: | |
15537 | return "MIPS_GOTSYM"; | |
15538 | case DT_MIPS_HIPAGENO: | |
15539 | return "MIPS_HIPAGENO"; | |
15540 | case DT_MIPS_RLD_MAP: | |
15541 | return "MIPS_RLD_MAP"; | |
a5499fa4 MF |
15542 | case DT_MIPS_RLD_MAP_REL: |
15543 | return "MIPS_RLD_MAP_REL"; | |
ad9563d6 CM |
15544 | case DT_MIPS_DELTA_CLASS: |
15545 | return "MIPS_DELTA_CLASS"; | |
15546 | case DT_MIPS_DELTA_CLASS_NO: | |
15547 | return "MIPS_DELTA_CLASS_NO"; | |
15548 | case DT_MIPS_DELTA_INSTANCE: | |
15549 | return "MIPS_DELTA_INSTANCE"; | |
15550 | case DT_MIPS_DELTA_INSTANCE_NO: | |
15551 | return "MIPS_DELTA_INSTANCE_NO"; | |
15552 | case DT_MIPS_DELTA_RELOC: | |
15553 | return "MIPS_DELTA_RELOC"; | |
15554 | case DT_MIPS_DELTA_RELOC_NO: | |
15555 | return "MIPS_DELTA_RELOC_NO"; | |
15556 | case DT_MIPS_DELTA_SYM: | |
15557 | return "MIPS_DELTA_SYM"; | |
15558 | case DT_MIPS_DELTA_SYM_NO: | |
15559 | return "MIPS_DELTA_SYM_NO"; | |
15560 | case DT_MIPS_DELTA_CLASSSYM: | |
15561 | return "MIPS_DELTA_CLASSSYM"; | |
15562 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
15563 | return "MIPS_DELTA_CLASSSYM_NO"; | |
15564 | case DT_MIPS_CXX_FLAGS: | |
15565 | return "MIPS_CXX_FLAGS"; | |
15566 | case DT_MIPS_PIXIE_INIT: | |
15567 | return "MIPS_PIXIE_INIT"; | |
15568 | case DT_MIPS_SYMBOL_LIB: | |
15569 | return "MIPS_SYMBOL_LIB"; | |
15570 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
15571 | return "MIPS_LOCALPAGE_GOTIDX"; | |
15572 | case DT_MIPS_LOCAL_GOTIDX: | |
15573 | return "MIPS_LOCAL_GOTIDX"; | |
15574 | case DT_MIPS_HIDDEN_GOTIDX: | |
15575 | return "MIPS_HIDDEN_GOTIDX"; | |
15576 | case DT_MIPS_PROTECTED_GOTIDX: | |
15577 | return "MIPS_PROTECTED_GOT_IDX"; | |
15578 | case DT_MIPS_OPTIONS: | |
15579 | return "MIPS_OPTIONS"; | |
15580 | case DT_MIPS_INTERFACE: | |
15581 | return "MIPS_INTERFACE"; | |
15582 | case DT_MIPS_DYNSTR_ALIGN: | |
15583 | return "DT_MIPS_DYNSTR_ALIGN"; | |
15584 | case DT_MIPS_INTERFACE_SIZE: | |
15585 | return "DT_MIPS_INTERFACE_SIZE"; | |
15586 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
15587 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
15588 | case DT_MIPS_PERF_SUFFIX: | |
15589 | return "DT_MIPS_PERF_SUFFIX"; | |
15590 | case DT_MIPS_COMPACT_SIZE: | |
15591 | return "DT_MIPS_COMPACT_SIZE"; | |
15592 | case DT_MIPS_GP_VALUE: | |
15593 | return "DT_MIPS_GP_VALUE"; | |
15594 | case DT_MIPS_AUX_DYNAMIC: | |
15595 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
15596 | case DT_MIPS_PLTGOT: |
15597 | return "DT_MIPS_PLTGOT"; | |
15598 | case DT_MIPS_RWPLT: | |
15599 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
15600 | } |
15601 | } | |
15602 | ||
757a636f RS |
15603 | /* Return the meaning of Tag_GNU_MIPS_ABI_FP value FP, or null if |
15604 | not known. */ | |
15605 | ||
15606 | const char * | |
15607 | _bfd_mips_fp_abi_string (int fp) | |
15608 | { | |
15609 | switch (fp) | |
15610 | { | |
15611 | /* These strings aren't translated because they're simply | |
15612 | option lists. */ | |
15613 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
15614 | return "-mdouble-float"; | |
15615 | ||
15616 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
15617 | return "-msingle-float"; | |
15618 | ||
15619 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
15620 | return "-msoft-float"; | |
15621 | ||
351cdf24 MF |
15622 | case Val_GNU_MIPS_ABI_FP_OLD_64: |
15623 | return _("-mips32r2 -mfp64 (12 callee-saved)"); | |
15624 | ||
15625 | case Val_GNU_MIPS_ABI_FP_XX: | |
15626 | return "-mfpxx"; | |
15627 | ||
757a636f | 15628 | case Val_GNU_MIPS_ABI_FP_64: |
351cdf24 MF |
15629 | return "-mgp32 -mfp64"; |
15630 | ||
15631 | case Val_GNU_MIPS_ABI_FP_64A: | |
15632 | return "-mgp32 -mfp64 -mno-odd-spreg"; | |
757a636f RS |
15633 | |
15634 | default: | |
15635 | return 0; | |
15636 | } | |
15637 | } | |
15638 | ||
351cdf24 MF |
15639 | static void |
15640 | print_mips_ases (FILE *file, unsigned int mask) | |
15641 | { | |
15642 | if (mask & AFL_ASE_DSP) | |
15643 | fputs ("\n\tDSP ASE", file); | |
15644 | if (mask & AFL_ASE_DSPR2) | |
15645 | fputs ("\n\tDSP R2 ASE", file); | |
8f4f9071 MF |
15646 | if (mask & AFL_ASE_DSPR3) |
15647 | fputs ("\n\tDSP R3 ASE", file); | |
351cdf24 MF |
15648 | if (mask & AFL_ASE_EVA) |
15649 | fputs ("\n\tEnhanced VA Scheme", file); | |
15650 | if (mask & AFL_ASE_MCU) | |
15651 | fputs ("\n\tMCU (MicroController) ASE", file); | |
15652 | if (mask & AFL_ASE_MDMX) | |
15653 | fputs ("\n\tMDMX ASE", file); | |
15654 | if (mask & AFL_ASE_MIPS3D) | |
15655 | fputs ("\n\tMIPS-3D ASE", file); | |
15656 | if (mask & AFL_ASE_MT) | |
15657 | fputs ("\n\tMT ASE", file); | |
15658 | if (mask & AFL_ASE_SMARTMIPS) | |
15659 | fputs ("\n\tSmartMIPS ASE", file); | |
15660 | if (mask & AFL_ASE_VIRT) | |
15661 | fputs ("\n\tVZ ASE", file); | |
15662 | if (mask & AFL_ASE_MSA) | |
15663 | fputs ("\n\tMSA ASE", file); | |
15664 | if (mask & AFL_ASE_MIPS16) | |
15665 | fputs ("\n\tMIPS16 ASE", file); | |
15666 | if (mask & AFL_ASE_MICROMIPS) | |
15667 | fputs ("\n\tMICROMIPS ASE", file); | |
15668 | if (mask & AFL_ASE_XPA) | |
15669 | fputs ("\n\tXPA ASE", file); | |
25499ac7 MR |
15670 | if (mask & AFL_ASE_MIPS16E2) |
15671 | fputs ("\n\tMIPS16e2 ASE", file); | |
730c3174 SE |
15672 | if (mask & AFL_ASE_CRC) |
15673 | fputs ("\n\tCRC ASE", file); | |
6f20c942 FS |
15674 | if (mask & AFL_ASE_GINV) |
15675 | fputs ("\n\tGINV ASE", file); | |
351cdf24 MF |
15676 | if (mask == 0) |
15677 | fprintf (file, "\n\t%s", _("None")); | |
00ac7aa0 MF |
15678 | else if ((mask & ~AFL_ASE_MASK) != 0) |
15679 | fprintf (stdout, "\n\t%s (%x)", _("Unknown"), mask & ~AFL_ASE_MASK); | |
351cdf24 MF |
15680 | } |
15681 | ||
15682 | static void | |
15683 | print_mips_isa_ext (FILE *file, unsigned int isa_ext) | |
15684 | { | |
15685 | switch (isa_ext) | |
15686 | { | |
15687 | case 0: | |
15688 | fputs (_("None"), file); | |
15689 | break; | |
15690 | case AFL_EXT_XLR: | |
15691 | fputs ("RMI XLR", file); | |
15692 | break; | |
2c629856 N |
15693 | case AFL_EXT_OCTEON3: |
15694 | fputs ("Cavium Networks Octeon3", file); | |
15695 | break; | |
351cdf24 MF |
15696 | case AFL_EXT_OCTEON2: |
15697 | fputs ("Cavium Networks Octeon2", file); | |
15698 | break; | |
15699 | case AFL_EXT_OCTEONP: | |
15700 | fputs ("Cavium Networks OcteonP", file); | |
15701 | break; | |
15702 | case AFL_EXT_LOONGSON_3A: | |
15703 | fputs ("Loongson 3A", file); | |
15704 | break; | |
15705 | case AFL_EXT_OCTEON: | |
15706 | fputs ("Cavium Networks Octeon", file); | |
15707 | break; | |
15708 | case AFL_EXT_5900: | |
15709 | fputs ("Toshiba R5900", file); | |
15710 | break; | |
15711 | case AFL_EXT_4650: | |
15712 | fputs ("MIPS R4650", file); | |
15713 | break; | |
15714 | case AFL_EXT_4010: | |
15715 | fputs ("LSI R4010", file); | |
15716 | break; | |
15717 | case AFL_EXT_4100: | |
15718 | fputs ("NEC VR4100", file); | |
15719 | break; | |
15720 | case AFL_EXT_3900: | |
15721 | fputs ("Toshiba R3900", file); | |
15722 | break; | |
15723 | case AFL_EXT_10000: | |
15724 | fputs ("MIPS R10000", file); | |
15725 | break; | |
15726 | case AFL_EXT_SB1: | |
15727 | fputs ("Broadcom SB-1", file); | |
15728 | break; | |
15729 | case AFL_EXT_4111: | |
15730 | fputs ("NEC VR4111/VR4181", file); | |
15731 | break; | |
15732 | case AFL_EXT_4120: | |
15733 | fputs ("NEC VR4120", file); | |
15734 | break; | |
15735 | case AFL_EXT_5400: | |
15736 | fputs ("NEC VR5400", file); | |
15737 | break; | |
15738 | case AFL_EXT_5500: | |
15739 | fputs ("NEC VR5500", file); | |
15740 | break; | |
15741 | case AFL_EXT_LOONGSON_2E: | |
15742 | fputs ("ST Microelectronics Loongson 2E", file); | |
15743 | break; | |
15744 | case AFL_EXT_LOONGSON_2F: | |
15745 | fputs ("ST Microelectronics Loongson 2F", file); | |
15746 | break; | |
38bf472a MR |
15747 | case AFL_EXT_INTERAPTIV_MR2: |
15748 | fputs ("Imagination interAptiv MR2", file); | |
15749 | break; | |
351cdf24 | 15750 | default: |
00ac7aa0 | 15751 | fprintf (file, "%s (%d)", _("Unknown"), isa_ext); |
351cdf24 MF |
15752 | break; |
15753 | } | |
15754 | } | |
15755 | ||
15756 | static void | |
15757 | print_mips_fp_abi_value (FILE *file, int val) | |
15758 | { | |
15759 | switch (val) | |
15760 | { | |
15761 | case Val_GNU_MIPS_ABI_FP_ANY: | |
15762 | fprintf (file, _("Hard or soft float\n")); | |
15763 | break; | |
15764 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
15765 | fprintf (file, _("Hard float (double precision)\n")); | |
15766 | break; | |
15767 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
15768 | fprintf (file, _("Hard float (single precision)\n")); | |
15769 | break; | |
15770 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
15771 | fprintf (file, _("Soft float\n")); | |
15772 | break; | |
15773 | case Val_GNU_MIPS_ABI_FP_OLD_64: | |
15774 | fprintf (file, _("Hard float (MIPS32r2 64-bit FPU 12 callee-saved)\n")); | |
15775 | break; | |
15776 | case Val_GNU_MIPS_ABI_FP_XX: | |
15777 | fprintf (file, _("Hard float (32-bit CPU, Any FPU)\n")); | |
15778 | break; | |
15779 | case Val_GNU_MIPS_ABI_FP_64: | |
15780 | fprintf (file, _("Hard float (32-bit CPU, 64-bit FPU)\n")); | |
15781 | break; | |
15782 | case Val_GNU_MIPS_ABI_FP_64A: | |
15783 | fprintf (file, _("Hard float compat (32-bit CPU, 64-bit FPU)\n")); | |
15784 | break; | |
15785 | default: | |
15786 | fprintf (file, "??? (%d)\n", val); | |
15787 | break; | |
15788 | } | |
15789 | } | |
15790 | ||
15791 | static int | |
15792 | get_mips_reg_size (int reg_size) | |
15793 | { | |
15794 | return (reg_size == AFL_REG_NONE) ? 0 | |
15795 | : (reg_size == AFL_REG_32) ? 32 | |
15796 | : (reg_size == AFL_REG_64) ? 64 | |
15797 | : (reg_size == AFL_REG_128) ? 128 | |
15798 | : -1; | |
15799 | } | |
15800 | ||
b34976b6 | 15801 | bfd_boolean |
9719ad41 | 15802 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 15803 | { |
9719ad41 | 15804 | FILE *file = ptr; |
b49e97c9 TS |
15805 | |
15806 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
15807 | ||
15808 | /* Print normal ELF private data. */ | |
15809 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
15810 | ||
15811 | /* xgettext:c-format */ | |
15812 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
15813 | ||
15814 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
15815 | fprintf (file, _(" [abi=O32]")); | |
15816 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
15817 | fprintf (file, _(" [abi=O64]")); | |
15818 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
15819 | fprintf (file, _(" [abi=EABI32]")); | |
15820 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
15821 | fprintf (file, _(" [abi=EABI64]")); | |
15822 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
15823 | fprintf (file, _(" [abi unknown]")); | |
15824 | else if (ABI_N32_P (abfd)) | |
15825 | fprintf (file, _(" [abi=N32]")); | |
15826 | else if (ABI_64_P (abfd)) | |
15827 | fprintf (file, _(" [abi=64]")); | |
15828 | else | |
15829 | fprintf (file, _(" [no abi set]")); | |
15830 | ||
15831 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 15832 | fprintf (file, " [mips1]"); |
b49e97c9 | 15833 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 15834 | fprintf (file, " [mips2]"); |
b49e97c9 | 15835 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 15836 | fprintf (file, " [mips3]"); |
b49e97c9 | 15837 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 15838 | fprintf (file, " [mips4]"); |
b49e97c9 | 15839 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 15840 | fprintf (file, " [mips5]"); |
b49e97c9 | 15841 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 15842 | fprintf (file, " [mips32]"); |
b49e97c9 | 15843 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 15844 | fprintf (file, " [mips64]"); |
af7ee8bf | 15845 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 15846 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 15847 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 15848 | fprintf (file, " [mips64r2]"); |
7361da2c AB |
15849 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6) |
15850 | fprintf (file, " [mips32r6]"); | |
15851 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
15852 | fprintf (file, " [mips64r6]"); | |
b49e97c9 TS |
15853 | else |
15854 | fprintf (file, _(" [unknown ISA]")); | |
15855 | ||
40d32fc6 | 15856 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 15857 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
15858 | |
15859 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 15860 | fprintf (file, " [mips16]"); |
40d32fc6 | 15861 | |
df58fc94 RS |
15862 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
15863 | fprintf (file, " [micromips]"); | |
15864 | ||
ba92f887 MR |
15865 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NAN2008) |
15866 | fprintf (file, " [nan2008]"); | |
15867 | ||
5baf5e34 | 15868 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_FP64) |
351cdf24 | 15869 | fprintf (file, " [old fp64]"); |
5baf5e34 | 15870 | |
b49e97c9 | 15871 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 15872 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
15873 | else |
15874 | fprintf (file, _(" [not 32bitmode]")); | |
15875 | ||
c0e3f241 | 15876 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 15877 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
15878 | |
15879 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 15880 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
15881 | |
15882 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 15883 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
15884 | |
15885 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 15886 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
15887 | |
15888 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 15889 | fprintf (file, " [UCODE]"); |
c0e3f241 | 15890 | |
b49e97c9 TS |
15891 | fputc ('\n', file); |
15892 | ||
351cdf24 MF |
15893 | if (mips_elf_tdata (abfd)->abiflags_valid) |
15894 | { | |
15895 | Elf_Internal_ABIFlags_v0 *abiflags = &mips_elf_tdata (abfd)->abiflags; | |
15896 | fprintf (file, "\nMIPS ABI Flags Version: %d\n", abiflags->version); | |
15897 | fprintf (file, "\nISA: MIPS%d", abiflags->isa_level); | |
15898 | if (abiflags->isa_rev > 1) | |
15899 | fprintf (file, "r%d", abiflags->isa_rev); | |
15900 | fprintf (file, "\nGPR size: %d", | |
15901 | get_mips_reg_size (abiflags->gpr_size)); | |
15902 | fprintf (file, "\nCPR1 size: %d", | |
15903 | get_mips_reg_size (abiflags->cpr1_size)); | |
15904 | fprintf (file, "\nCPR2 size: %d", | |
15905 | get_mips_reg_size (abiflags->cpr2_size)); | |
15906 | fputs ("\nFP ABI: ", file); | |
15907 | print_mips_fp_abi_value (file, abiflags->fp_abi); | |
15908 | fputs ("ISA Extension: ", file); | |
15909 | print_mips_isa_ext (file, abiflags->isa_ext); | |
15910 | fputs ("\nASEs:", file); | |
15911 | print_mips_ases (file, abiflags->ases); | |
15912 | fprintf (file, "\nFLAGS 1: %8.8lx", abiflags->flags1); | |
15913 | fprintf (file, "\nFLAGS 2: %8.8lx", abiflags->flags2); | |
15914 | fputc ('\n', file); | |
15915 | } | |
15916 | ||
b34976b6 | 15917 | return TRUE; |
b49e97c9 | 15918 | } |
2f89ff8d | 15919 | |
b35d266b | 15920 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 15921 | { |
07d6d2b8 AM |
15922 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
15923 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
0112cd26 | 15924 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, |
07d6d2b8 | 15925 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
0112cd26 NC |
15926 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
15927 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
07d6d2b8 | 15928 | { NULL, 0, 0, 0, 0 } |
2f89ff8d | 15929 | }; |
5e2b0d47 | 15930 | |
8992f0d7 TS |
15931 | /* Merge non visibility st_other attributes. Ensure that the |
15932 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
15933 | definiton of the symbol. */ | |
5e2b0d47 NC |
15934 | void |
15935 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
15936 | const Elf_Internal_Sym *isym, | |
15937 | bfd_boolean definition, | |
15938 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
15939 | { | |
8992f0d7 TS |
15940 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
15941 | { | |
15942 | unsigned char other; | |
15943 | ||
15944 | other = (definition ? isym->st_other : h->other); | |
15945 | other &= ~ELF_ST_VISIBILITY (-1); | |
15946 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
15947 | } | |
15948 | ||
15949 | if (!definition | |
5e2b0d47 NC |
15950 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
15951 | h->other |= STO_OPTIONAL; | |
15952 | } | |
12ac1cf5 NC |
15953 | |
15954 | /* Decide whether an undefined symbol is special and can be ignored. | |
15955 | This is the case for OPTIONAL symbols on IRIX. */ | |
15956 | bfd_boolean | |
15957 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
15958 | { | |
15959 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
15960 | } | |
e0764319 NC |
15961 | |
15962 | bfd_boolean | |
15963 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
15964 | { | |
15965 | return (sym->st_shndx == SHN_COMMON | |
15966 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
15967 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
15968 | } | |
861fb55a DJ |
15969 | |
15970 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
15971 | or (bfd_vma) -1 if it should not be included. */ | |
15972 | ||
15973 | bfd_vma | |
15974 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
15975 | const arelent *rel ATTRIBUTE_UNUSED) | |
15976 | { | |
15977 | return (plt->vma | |
15978 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
15979 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
15980 | } | |
15981 | ||
1bbce132 MR |
15982 | /* Build a table of synthetic symbols to represent the PLT. As with MIPS16 |
15983 | and microMIPS PLT slots we may have a many-to-one mapping between .plt | |
15984 | and .got.plt and also the slots may be of a different size each we walk | |
15985 | the PLT manually fetching instructions and matching them against known | |
15986 | patterns. To make things easier standard MIPS slots, if any, always come | |
15987 | first. As we don't create proper ELF symbols we use the UDATA.I member | |
15988 | of ASYMBOL to carry ISA annotation. The encoding used is the same as | |
15989 | with the ST_OTHER member of the ELF symbol. */ | |
15990 | ||
15991 | long | |
15992 | _bfd_mips_elf_get_synthetic_symtab (bfd *abfd, | |
15993 | long symcount ATTRIBUTE_UNUSED, | |
15994 | asymbol **syms ATTRIBUTE_UNUSED, | |
15995 | long dynsymcount, asymbol **dynsyms, | |
15996 | asymbol **ret) | |
15997 | { | |
15998 | static const char pltname[] = "_PROCEDURE_LINKAGE_TABLE_"; | |
15999 | static const char microsuffix[] = "@micromipsplt"; | |
16000 | static const char m16suffix[] = "@mips16plt"; | |
16001 | static const char mipssuffix[] = "@plt"; | |
16002 | ||
16003 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
16004 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
16005 | bfd_boolean micromips_p = MICROMIPS_P (abfd); | |
16006 | Elf_Internal_Shdr *hdr; | |
16007 | bfd_byte *plt_data; | |
16008 | bfd_vma plt_offset; | |
16009 | unsigned int other; | |
16010 | bfd_vma entry_size; | |
16011 | bfd_vma plt0_size; | |
16012 | asection *relplt; | |
16013 | bfd_vma opcode; | |
16014 | asection *plt; | |
16015 | asymbol *send; | |
16016 | size_t size; | |
16017 | char *names; | |
16018 | long counti; | |
16019 | arelent *p; | |
16020 | asymbol *s; | |
16021 | char *nend; | |
16022 | long count; | |
16023 | long pi; | |
16024 | long i; | |
16025 | long n; | |
16026 | ||
16027 | *ret = NULL; | |
16028 | ||
16029 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 || dynsymcount <= 0) | |
16030 | return 0; | |
16031 | ||
16032 | relplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
16033 | if (relplt == NULL) | |
16034 | return 0; | |
16035 | ||
16036 | hdr = &elf_section_data (relplt)->this_hdr; | |
16037 | if (hdr->sh_link != elf_dynsymtab (abfd) || hdr->sh_type != SHT_REL) | |
16038 | return 0; | |
16039 | ||
16040 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
16041 | if (plt == NULL) | |
16042 | return 0; | |
16043 | ||
16044 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
16045 | if (!(*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
16046 | return -1; | |
16047 | p = relplt->relocation; | |
16048 | ||
16049 | /* Calculating the exact amount of space required for symbols would | |
16050 | require two passes over the PLT, so just pessimise assuming two | |
16051 | PLT slots per relocation. */ | |
16052 | count = relplt->size / hdr->sh_entsize; | |
16053 | counti = count * bed->s->int_rels_per_ext_rel; | |
16054 | size = 2 * count * sizeof (asymbol); | |
16055 | size += count * (sizeof (mipssuffix) + | |
16056 | (micromips_p ? sizeof (microsuffix) : sizeof (m16suffix))); | |
16057 | for (pi = 0; pi < counti; pi += bed->s->int_rels_per_ext_rel) | |
16058 | size += 2 * strlen ((*p[pi].sym_ptr_ptr)->name); | |
16059 | ||
16060 | /* Add the size of "_PROCEDURE_LINKAGE_TABLE_" too. */ | |
16061 | size += sizeof (asymbol) + sizeof (pltname); | |
16062 | ||
16063 | if (!bfd_malloc_and_get_section (abfd, plt, &plt_data)) | |
16064 | return -1; | |
16065 | ||
16066 | if (plt->size < 16) | |
16067 | return -1; | |
16068 | ||
16069 | s = *ret = bfd_malloc (size); | |
16070 | if (s == NULL) | |
16071 | return -1; | |
16072 | send = s + 2 * count + 1; | |
16073 | ||
16074 | names = (char *) send; | |
16075 | nend = (char *) s + size; | |
16076 | n = 0; | |
16077 | ||
16078 | opcode = bfd_get_micromips_32 (abfd, plt_data + 12); | |
16079 | if (opcode == 0x3302fffe) | |
16080 | { | |
16081 | if (!micromips_p) | |
16082 | return -1; | |
16083 | plt0_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
16084 | other = STO_MICROMIPS; | |
16085 | } | |
833794fc MR |
16086 | else if (opcode == 0x0398c1d0) |
16087 | { | |
16088 | if (!micromips_p) | |
16089 | return -1; | |
16090 | plt0_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
16091 | other = STO_MICROMIPS; | |
16092 | } | |
1bbce132 MR |
16093 | else |
16094 | { | |
16095 | plt0_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
16096 | other = 0; | |
16097 | } | |
16098 | ||
16099 | s->the_bfd = abfd; | |
16100 | s->flags = BSF_SYNTHETIC | BSF_FUNCTION | BSF_LOCAL; | |
16101 | s->section = plt; | |
16102 | s->value = 0; | |
16103 | s->name = names; | |
16104 | s->udata.i = other; | |
16105 | memcpy (names, pltname, sizeof (pltname)); | |
16106 | names += sizeof (pltname); | |
16107 | ++s, ++n; | |
16108 | ||
16109 | pi = 0; | |
16110 | for (plt_offset = plt0_size; | |
16111 | plt_offset + 8 <= plt->size && s < send; | |
16112 | plt_offset += entry_size) | |
16113 | { | |
16114 | bfd_vma gotplt_addr; | |
16115 | const char *suffix; | |
16116 | bfd_vma gotplt_hi; | |
16117 | bfd_vma gotplt_lo; | |
16118 | size_t suffixlen; | |
16119 | ||
16120 | opcode = bfd_get_micromips_32 (abfd, plt_data + plt_offset + 4); | |
16121 | ||
16122 | /* Check if the second word matches the expected MIPS16 instruction. */ | |
16123 | if (opcode == 0x651aeb00) | |
16124 | { | |
16125 | if (micromips_p) | |
16126 | return -1; | |
16127 | /* Truncated table??? */ | |
16128 | if (plt_offset + 16 > plt->size) | |
16129 | break; | |
16130 | gotplt_addr = bfd_get_32 (abfd, plt_data + plt_offset + 12); | |
16131 | entry_size = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); | |
16132 | suffixlen = sizeof (m16suffix); | |
16133 | suffix = m16suffix; | |
16134 | other = STO_MIPS16; | |
16135 | } | |
833794fc | 16136 | /* Likewise the expected microMIPS instruction (no insn32 mode). */ |
1bbce132 MR |
16137 | else if (opcode == 0xff220000) |
16138 | { | |
16139 | if (!micromips_p) | |
16140 | return -1; | |
16141 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset) & 0x7f; | |
16142 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16143 | gotplt_hi = ((gotplt_hi ^ 0x40) - 0x40) << 18; | |
16144 | gotplt_lo <<= 2; | |
16145 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16146 | gotplt_addr += ((plt->vma + plt_offset) | 3) ^ 3; | |
16147 | entry_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); | |
16148 | suffixlen = sizeof (microsuffix); | |
16149 | suffix = microsuffix; | |
16150 | other = STO_MICROMIPS; | |
16151 | } | |
833794fc MR |
16152 | /* Likewise the expected microMIPS instruction (insn32 mode). */ |
16153 | else if ((opcode & 0xffff0000) == 0xff2f0000) | |
16154 | { | |
16155 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16156 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 6) & 0xffff; | |
16157 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16158 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16159 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16160 | entry_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
16161 | suffixlen = sizeof (microsuffix); | |
16162 | suffix = microsuffix; | |
16163 | other = STO_MICROMIPS; | |
16164 | } | |
1bbce132 MR |
16165 | /* Otherwise assume standard MIPS code. */ |
16166 | else | |
16167 | { | |
16168 | gotplt_hi = bfd_get_32 (abfd, plt_data + plt_offset) & 0xffff; | |
16169 | gotplt_lo = bfd_get_32 (abfd, plt_data + plt_offset + 4) & 0xffff; | |
16170 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16171 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16172 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16173 | entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
16174 | suffixlen = sizeof (mipssuffix); | |
16175 | suffix = mipssuffix; | |
16176 | other = 0; | |
16177 | } | |
16178 | /* Truncated table??? */ | |
16179 | if (plt_offset + entry_size > plt->size) | |
16180 | break; | |
16181 | ||
16182 | for (i = 0; | |
16183 | i < count && p[pi].address != gotplt_addr; | |
16184 | i++, pi = (pi + bed->s->int_rels_per_ext_rel) % counti); | |
16185 | ||
16186 | if (i < count) | |
16187 | { | |
16188 | size_t namelen; | |
16189 | size_t len; | |
16190 | ||
16191 | *s = **p[pi].sym_ptr_ptr; | |
16192 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
16193 | we are defining a symbol, ensure one of them is set. */ | |
16194 | if ((s->flags & BSF_LOCAL) == 0) | |
16195 | s->flags |= BSF_GLOBAL; | |
16196 | s->flags |= BSF_SYNTHETIC; | |
16197 | s->section = plt; | |
16198 | s->value = plt_offset; | |
16199 | s->name = names; | |
16200 | s->udata.i = other; | |
16201 | ||
16202 | len = strlen ((*p[pi].sym_ptr_ptr)->name); | |
16203 | namelen = len + suffixlen; | |
16204 | if (names + namelen > nend) | |
16205 | break; | |
16206 | ||
16207 | memcpy (names, (*p[pi].sym_ptr_ptr)->name, len); | |
16208 | names += len; | |
16209 | memcpy (names, suffix, suffixlen); | |
16210 | names += suffixlen; | |
16211 | ||
16212 | ++s, ++n; | |
16213 | pi = (pi + bed->s->int_rels_per_ext_rel) % counti; | |
16214 | } | |
16215 | } | |
16216 | ||
16217 | free (plt_data); | |
16218 | ||
16219 | return n; | |
16220 | } | |
16221 | ||
5e7fc731 MR |
16222 | /* Return the ABI flags associated with ABFD if available. */ |
16223 | ||
16224 | Elf_Internal_ABIFlags_v0 * | |
16225 | bfd_mips_elf_get_abiflags (bfd *abfd) | |
16226 | { | |
16227 | struct mips_elf_obj_tdata *tdata = mips_elf_tdata (abfd); | |
16228 | ||
16229 | return tdata->abiflags_valid ? &tdata->abiflags : NULL; | |
16230 | } | |
16231 | ||
bb29b84d MR |
16232 | /* MIPS libc ABI versions, used with the EI_ABIVERSION ELF file header |
16233 | field. Taken from `libc-abis.h' generated at GNU libc build time. | |
16234 | Using a MIPS_ prefix as other libc targets use different values. */ | |
16235 | enum | |
16236 | { | |
16237 | MIPS_LIBC_ABI_DEFAULT = 0, | |
16238 | MIPS_LIBC_ABI_MIPS_PLT, | |
16239 | MIPS_LIBC_ABI_UNIQUE, | |
16240 | MIPS_LIBC_ABI_MIPS_O32_FP64, | |
16241 | MIPS_LIBC_ABI_MAX | |
16242 | }; | |
16243 | ||
861fb55a DJ |
16244 | void |
16245 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
16246 | { | |
16247 | struct mips_elf_link_hash_table *htab; | |
16248 | Elf_Internal_Ehdr *i_ehdrp; | |
16249 | ||
16250 | i_ehdrp = elf_elfheader (abfd); | |
16251 | if (link_info) | |
16252 | { | |
16253 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 NC |
16254 | BFD_ASSERT (htab != NULL); |
16255 | ||
861fb55a | 16256 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
bb29b84d | 16257 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_PLT; |
861fb55a | 16258 | } |
0af03126 | 16259 | |
351cdf24 MF |
16260 | if (mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64 |
16261 | || mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
bb29b84d | 16262 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_O32_FP64; |
334cd8a7 MR |
16263 | |
16264 | _bfd_elf_post_process_headers (abfd, link_info); | |
861fb55a | 16265 | } |
2f0c68f2 CM |
16266 | |
16267 | int | |
1ced1a5f MR |
16268 | _bfd_mips_elf_compact_eh_encoding |
16269 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16270 | { |
16271 | return DW_EH_PE_pcrel | DW_EH_PE_sdata4; | |
16272 | } | |
16273 | ||
16274 | /* Return the opcode for can't unwind. */ | |
16275 | ||
16276 | int | |
1ced1a5f MR |
16277 | _bfd_mips_elf_cant_unwind_opcode |
16278 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16279 | { |
16280 | return COMPACT_EH_CANT_UNWIND_OPCODE; | |
16281 | } |