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b49e97c9 | 1 | /* MIPS-specific support for ELF |
a253d456 | 2 | Copyright 1993-2013 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" |
b49e97c9 TS |
39 | |
40 | /* Get the ECOFF swapping routines. */ | |
41 | #include "coff/sym.h" | |
42 | #include "coff/symconst.h" | |
43 | #include "coff/ecoff.h" | |
44 | #include "coff/mips.h" | |
45 | ||
b15e6682 AO |
46 | #include "hashtab.h" |
47 | ||
9ab066b4 RS |
48 | /* Types of TLS GOT entry. */ |
49 | enum mips_got_tls_type { | |
50 | GOT_TLS_NONE, | |
51 | GOT_TLS_GD, | |
52 | GOT_TLS_LDM, | |
53 | GOT_TLS_IE | |
54 | }; | |
55 | ||
ead49a57 | 56 | /* This structure is used to hold information about one GOT entry. |
3dff0dd1 RS |
57 | There are four types of entry: |
58 | ||
59 | (1) an absolute address | |
60 | requires: abfd == NULL | |
61 | fields: d.address | |
62 | ||
63 | (2) a SYMBOL + OFFSET address, where SYMBOL is local to an input bfd | |
64 | requires: abfd != NULL, symndx >= 0, tls_type != GOT_TLS_LDM | |
65 | fields: abfd, symndx, d.addend, tls_type | |
66 | ||
67 | (3) a SYMBOL address, where SYMBOL is not local to an input bfd | |
68 | requires: abfd != NULL, symndx == -1 | |
69 | fields: d.h, tls_type | |
70 | ||
71 | (4) a TLS LDM slot | |
72 | requires: abfd != NULL, symndx == 0, tls_type == GOT_TLS_LDM | |
73 | fields: none; there's only one of these per GOT. */ | |
b15e6682 AO |
74 | struct mips_got_entry |
75 | { | |
3dff0dd1 | 76 | /* One input bfd that needs the GOT entry. */ |
b15e6682 | 77 | bfd *abfd; |
f4416af6 AO |
78 | /* The index of the symbol, as stored in the relocation r_info, if |
79 | we have a local symbol; -1 otherwise. */ | |
80 | long symndx; | |
81 | union | |
82 | { | |
83 | /* If abfd == NULL, an address that must be stored in the got. */ | |
84 | bfd_vma address; | |
85 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
86 | that should be added to the symbol value. */ | |
87 | bfd_vma addend; | |
88 | /* If abfd != NULL && symndx == -1, the hash table entry | |
3dff0dd1 | 89 | corresponding to a symbol in the GOT. The symbol's entry |
020d7251 RS |
90 | is in the local area if h->global_got_area is GGA_NONE, |
91 | otherwise it is in the global area. */ | |
f4416af6 AO |
92 | struct mips_elf_link_hash_entry *h; |
93 | } d; | |
0f20cc35 | 94 | |
9ab066b4 RS |
95 | /* The TLS type of this GOT entry. An LDM GOT entry will be a local |
96 | symbol entry with r_symndx == 0. */ | |
0f20cc35 DJ |
97 | unsigned char tls_type; |
98 | ||
9ab066b4 RS |
99 | /* True if we have filled in the GOT contents for a TLS entry, |
100 | and created the associated relocations. */ | |
101 | unsigned char tls_initialized; | |
102 | ||
b15e6682 | 103 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
104 | corresponding to this symbol+addend. If it's a global symbol |
105 | whose offset is yet to be decided, it's going to be -1. */ | |
106 | long gotidx; | |
b15e6682 AO |
107 | }; |
108 | ||
13db6b44 RS |
109 | /* This structure represents a GOT page reference from an input bfd. |
110 | Each instance represents a symbol + ADDEND, where the representation | |
111 | of the symbol depends on whether it is local to the input bfd. | |
112 | If it is, then SYMNDX >= 0, and the symbol has index SYMNDX in U.ABFD. | |
113 | Otherwise, SYMNDX < 0 and U.H points to the symbol's hash table entry. | |
114 | ||
115 | Page references with SYMNDX >= 0 always become page references | |
116 | in the output. Page references with SYMNDX < 0 only become page | |
117 | references if the symbol binds locally; in other cases, the page | |
118 | reference decays to a global GOT reference. */ | |
119 | struct mips_got_page_ref | |
120 | { | |
121 | long symndx; | |
122 | union | |
123 | { | |
124 | struct mips_elf_link_hash_entry *h; | |
125 | bfd *abfd; | |
126 | } u; | |
127 | bfd_vma addend; | |
128 | }; | |
129 | ||
c224138d RS |
130 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
131 | The structures form a non-overlapping list that is sorted by increasing | |
132 | MIN_ADDEND. */ | |
133 | struct mips_got_page_range | |
134 | { | |
135 | struct mips_got_page_range *next; | |
136 | bfd_signed_vma min_addend; | |
137 | bfd_signed_vma max_addend; | |
138 | }; | |
139 | ||
140 | /* This structure describes the range of addends that are applied to page | |
13db6b44 | 141 | relocations against a given section. */ |
c224138d RS |
142 | struct mips_got_page_entry |
143 | { | |
13db6b44 RS |
144 | /* The section that these entries are based on. */ |
145 | asection *sec; | |
c224138d RS |
146 | /* The ranges for this page entry. */ |
147 | struct mips_got_page_range *ranges; | |
148 | /* The maximum number of page entries needed for RANGES. */ | |
149 | bfd_vma num_pages; | |
150 | }; | |
151 | ||
f0abc2a1 | 152 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
153 | |
154 | struct mips_got_info | |
155 | { | |
b49e97c9 TS |
156 | /* The number of global .got entries. */ |
157 | unsigned int global_gotno; | |
23cc69b6 RS |
158 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
159 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
160 | /* The number of .got slots used for TLS. */ |
161 | unsigned int tls_gotno; | |
162 | /* The first unused TLS .got entry. Used only during | |
163 | mips_elf_initialize_tls_index. */ | |
164 | unsigned int tls_assigned_gotno; | |
c224138d | 165 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 166 | unsigned int local_gotno; |
c224138d RS |
167 | /* The maximum number of page entries needed. */ |
168 | unsigned int page_gotno; | |
ab361d49 RS |
169 | /* The number of relocations needed for the GOT entries. */ |
170 | unsigned int relocs; | |
b49e97c9 TS |
171 | /* The number of local .got entries we have used. */ |
172 | unsigned int assigned_gotno; | |
b15e6682 AO |
173 | /* A hash table holding members of the got. */ |
174 | struct htab *got_entries; | |
13db6b44 RS |
175 | /* A hash table holding mips_got_page_ref structures. */ |
176 | struct htab *got_page_refs; | |
c224138d RS |
177 | /* A hash table of mips_got_page_entry structures. */ |
178 | struct htab *got_page_entries; | |
f4416af6 AO |
179 | /* In multi-got links, a pointer to the next got (err, rather, most |
180 | of the time, it points to the previous got). */ | |
181 | struct mips_got_info *next; | |
182 | }; | |
183 | ||
d7206569 | 184 | /* Structure passed when merging bfds' gots. */ |
f4416af6 AO |
185 | |
186 | struct mips_elf_got_per_bfd_arg | |
187 | { | |
f4416af6 AO |
188 | /* The output bfd. */ |
189 | bfd *obfd; | |
190 | /* The link information. */ | |
191 | struct bfd_link_info *info; | |
192 | /* A pointer to the primary got, i.e., the one that's going to get | |
193 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
194 | DT_MIPS_GOTSYM. */ | |
195 | struct mips_got_info *primary; | |
196 | /* A non-primary got we're trying to merge with other input bfd's | |
197 | gots. */ | |
198 | struct mips_got_info *current; | |
199 | /* The maximum number of got entries that can be addressed with a | |
200 | 16-bit offset. */ | |
201 | unsigned int max_count; | |
c224138d RS |
202 | /* The maximum number of page entries needed by each got. */ |
203 | unsigned int max_pages; | |
0f20cc35 DJ |
204 | /* The total number of global entries which will live in the |
205 | primary got and be automatically relocated. This includes | |
206 | those not referenced by the primary GOT but included in | |
207 | the "master" GOT. */ | |
208 | unsigned int global_count; | |
f4416af6 AO |
209 | }; |
210 | ||
ab361d49 RS |
211 | /* A structure used to pass information to htab_traverse callbacks |
212 | when laying out the GOT. */ | |
f4416af6 | 213 | |
ab361d49 | 214 | struct mips_elf_traverse_got_arg |
f4416af6 | 215 | { |
ab361d49 | 216 | struct bfd_link_info *info; |
f4416af6 AO |
217 | struct mips_got_info *g; |
218 | int value; | |
0f20cc35 DJ |
219 | }; |
220 | ||
f0abc2a1 AM |
221 | struct _mips_elf_section_data |
222 | { | |
223 | struct bfd_elf_section_data elf; | |
224 | union | |
225 | { | |
f0abc2a1 AM |
226 | bfd_byte *tdata; |
227 | } u; | |
228 | }; | |
229 | ||
230 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 231 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 232 | |
d5eaccd7 RS |
233 | #define is_mips_elf(bfd) \ |
234 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
235 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 236 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 237 | |
634835ae RS |
238 | /* The ABI says that every symbol used by dynamic relocations must have |
239 | a global GOT entry. Among other things, this provides the dynamic | |
240 | linker with a free, directly-indexed cache. The GOT can therefore | |
241 | contain symbols that are not referenced by GOT relocations themselves | |
242 | (in other words, it may have symbols that are not referenced by things | |
243 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
244 | ||
245 | GOT relocations are less likely to overflow if we put the associated | |
246 | GOT entries towards the beginning. We therefore divide the global | |
247 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
248 | the first area can be used for both dynamic relocations and GP-relative | |
249 | accesses, while those in the "reloc-only" area are for dynamic | |
250 | relocations only. | |
251 | ||
252 | These GGA_* ("Global GOT Area") values are organised so that lower | |
253 | values are more general than higher values. Also, non-GGA_NONE | |
254 | values are ordered by the position of the area in the GOT. */ | |
255 | #define GGA_NORMAL 0 | |
256 | #define GGA_RELOC_ONLY 1 | |
257 | #define GGA_NONE 2 | |
258 | ||
861fb55a DJ |
259 | /* Information about a non-PIC interface to a PIC function. There are |
260 | two ways of creating these interfaces. The first is to add: | |
261 | ||
262 | lui $25,%hi(func) | |
263 | addiu $25,$25,%lo(func) | |
264 | ||
265 | immediately before a PIC function "func". The second is to add: | |
266 | ||
267 | lui $25,%hi(func) | |
268 | j func | |
269 | addiu $25,$25,%lo(func) | |
270 | ||
271 | to a separate trampoline section. | |
272 | ||
273 | Stubs of the first kind go in a new section immediately before the | |
274 | target function. Stubs of the second kind go in a single section | |
275 | pointed to by the hash table's "strampoline" field. */ | |
276 | struct mips_elf_la25_stub { | |
277 | /* The generated section that contains this stub. */ | |
278 | asection *stub_section; | |
279 | ||
280 | /* The offset of the stub from the start of STUB_SECTION. */ | |
281 | bfd_vma offset; | |
282 | ||
283 | /* One symbol for the original function. Its location is available | |
284 | in H->root.root.u.def. */ | |
285 | struct mips_elf_link_hash_entry *h; | |
286 | }; | |
287 | ||
288 | /* Macros for populating a mips_elf_la25_stub. */ | |
289 | ||
290 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
291 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
292 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
d21911ea MR |
293 | #define LA25_LUI_MICROMIPS(VAL) \ |
294 | (0x41b90000 | (VAL)) /* lui t9,VAL */ | |
295 | #define LA25_J_MICROMIPS(VAL) \ | |
296 | (0xd4000000 | (((VAL) >> 1) & 0x3ffffff)) /* j VAL */ | |
297 | #define LA25_ADDIU_MICROMIPS(VAL) \ | |
298 | (0x33390000 | (VAL)) /* addiu t9,t9,VAL */ | |
861fb55a | 299 | |
b49e97c9 TS |
300 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
301 | the dynamic symbols. */ | |
302 | ||
303 | struct mips_elf_hash_sort_data | |
304 | { | |
305 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
306 | index. */ | |
307 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
308 | /* The least dynamic symbol table index corresponding to a non-TLS |
309 | symbol with a GOT entry. */ | |
b49e97c9 | 310 | long min_got_dynindx; |
f4416af6 AO |
311 | /* The greatest dynamic symbol table index corresponding to a symbol |
312 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 313 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 314 | long max_unref_got_dynindx; |
b49e97c9 TS |
315 | /* The greatest dynamic symbol table index not corresponding to a |
316 | symbol without a GOT entry. */ | |
317 | long max_non_got_dynindx; | |
318 | }; | |
319 | ||
320 | /* The MIPS ELF linker needs additional information for each symbol in | |
321 | the global hash table. */ | |
322 | ||
323 | struct mips_elf_link_hash_entry | |
324 | { | |
325 | struct elf_link_hash_entry root; | |
326 | ||
327 | /* External symbol information. */ | |
328 | EXTR esym; | |
329 | ||
861fb55a DJ |
330 | /* The la25 stub we have created for ths symbol, if any. */ |
331 | struct mips_elf_la25_stub *la25_stub; | |
332 | ||
b49e97c9 TS |
333 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
334 | this symbol. */ | |
335 | unsigned int possibly_dynamic_relocs; | |
336 | ||
b49e97c9 TS |
337 | /* If there is a stub that 32 bit functions should use to call this |
338 | 16 bit function, this points to the section containing the stub. */ | |
339 | asection *fn_stub; | |
340 | ||
b49e97c9 TS |
341 | /* If there is a stub that 16 bit functions should use to call this |
342 | 32 bit function, this points to the section containing the stub. */ | |
343 | asection *call_stub; | |
344 | ||
345 | /* This is like the call_stub field, but it is used if the function | |
346 | being called returns a floating point value. */ | |
347 | asection *call_fp_stub; | |
7c5fcef7 | 348 | |
634835ae RS |
349 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
350 | unsigned int global_got_area : 2; | |
351 | ||
6ccf4795 RS |
352 | /* True if all GOT relocations against this symbol are for calls. This is |
353 | a looser condition than no_fn_stub below, because there may be other | |
354 | non-call non-GOT relocations against the symbol. */ | |
355 | unsigned int got_only_for_calls : 1; | |
356 | ||
71782a75 RS |
357 | /* True if one of the relocations described by possibly_dynamic_relocs |
358 | is against a readonly section. */ | |
359 | unsigned int readonly_reloc : 1; | |
360 | ||
861fb55a DJ |
361 | /* True if there is a relocation against this symbol that must be |
362 | resolved by the static linker (in other words, if the relocation | |
363 | cannot possibly be made dynamic). */ | |
364 | unsigned int has_static_relocs : 1; | |
365 | ||
71782a75 RS |
366 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
367 | This is set, for example, if there are relocations related to | |
368 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
369 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
370 | unsigned int no_fn_stub : 1; | |
371 | ||
372 | /* Whether we need the fn_stub; this is true if this symbol appears | |
373 | in any relocs other than a 16 bit call. */ | |
374 | unsigned int need_fn_stub : 1; | |
375 | ||
861fb55a DJ |
376 | /* True if this symbol is referenced by branch relocations from |
377 | any non-PIC input file. This is used to determine whether an | |
378 | la25 stub is required. */ | |
379 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
380 | |
381 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
382 | (as opposed to a PLT entry)? */ | |
383 | unsigned int needs_lazy_stub : 1; | |
b49e97c9 TS |
384 | }; |
385 | ||
386 | /* MIPS ELF linker hash table. */ | |
387 | ||
388 | struct mips_elf_link_hash_table | |
389 | { | |
390 | struct elf_link_hash_table root; | |
861fb55a | 391 | |
b49e97c9 TS |
392 | /* The number of .rtproc entries. */ |
393 | bfd_size_type procedure_count; | |
861fb55a | 394 | |
b49e97c9 TS |
395 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
396 | bfd_size_type compact_rel_size; | |
861fb55a | 397 | |
e6aea42d MR |
398 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic entry |
399 | is set to the address of __rld_obj_head as in IRIX5 and IRIX6. */ | |
b34976b6 | 400 | bfd_boolean use_rld_obj_head; |
861fb55a | 401 | |
b4082c70 DD |
402 | /* The __rld_map or __rld_obj_head symbol. */ |
403 | struct elf_link_hash_entry *rld_symbol; | |
861fb55a | 404 | |
b49e97c9 | 405 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 406 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
407 | |
408 | /* True if we can generate copy relocs and PLTs. */ | |
409 | bfd_boolean use_plts_and_copy_relocs; | |
410 | ||
0a44bf69 RS |
411 | /* True if we're generating code for VxWorks. */ |
412 | bfd_boolean is_vxworks; | |
861fb55a | 413 | |
0e53d9da AN |
414 | /* True if we already reported the small-data section overflow. */ |
415 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 416 | |
0a44bf69 RS |
417 | /* Shortcuts to some dynamic sections, or NULL if they are not |
418 | being used. */ | |
419 | asection *srelbss; | |
420 | asection *sdynbss; | |
421 | asection *srelplt; | |
422 | asection *srelplt2; | |
423 | asection *sgotplt; | |
424 | asection *splt; | |
4e41d0d7 | 425 | asection *sstubs; |
a8028dd0 | 426 | asection *sgot; |
861fb55a | 427 | |
a8028dd0 RS |
428 | /* The master GOT information. */ |
429 | struct mips_got_info *got_info; | |
861fb55a | 430 | |
d222d210 RS |
431 | /* The global symbol in the GOT with the lowest index in the dynamic |
432 | symbol table. */ | |
433 | struct elf_link_hash_entry *global_gotsym; | |
434 | ||
861fb55a | 435 | /* The size of the PLT header in bytes. */ |
0a44bf69 | 436 | bfd_vma plt_header_size; |
861fb55a DJ |
437 | |
438 | /* The size of a PLT entry in bytes. */ | |
0a44bf69 | 439 | bfd_vma plt_entry_size; |
861fb55a | 440 | |
33bb52fb RS |
441 | /* The number of functions that need a lazy-binding stub. */ |
442 | bfd_vma lazy_stub_count; | |
861fb55a | 443 | |
5108fc1b RS |
444 | /* The size of a function stub entry in bytes. */ |
445 | bfd_vma function_stub_size; | |
861fb55a DJ |
446 | |
447 | /* The number of reserved entries at the beginning of the GOT. */ | |
448 | unsigned int reserved_gotno; | |
449 | ||
450 | /* The section used for mips_elf_la25_stub trampolines. | |
451 | See the comment above that structure for details. */ | |
452 | asection *strampoline; | |
453 | ||
454 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
455 | pairs. */ | |
456 | htab_t la25_stubs; | |
457 | ||
458 | /* A function FN (NAME, IS, OS) that creates a new input section | |
459 | called NAME and links it to output section OS. If IS is nonnull, | |
460 | the new section should go immediately before it, otherwise it | |
461 | should go at the (current) beginning of OS. | |
462 | ||
463 | The function returns the new section on success, otherwise it | |
464 | returns null. */ | |
465 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
13db6b44 RS |
466 | |
467 | /* Small local sym cache. */ | |
468 | struct sym_cache sym_cache; | |
861fb55a DJ |
469 | }; |
470 | ||
4dfe6ac6 NC |
471 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
472 | ||
473 | #define mips_elf_hash_table(p) \ | |
474 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
475 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
476 | ||
861fb55a | 477 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
478 | struct mips_htab_traverse_info |
479 | { | |
861fb55a DJ |
480 | /* The usual link-wide information. */ |
481 | struct bfd_link_info *info; | |
482 | bfd *output_bfd; | |
483 | ||
484 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
485 | bfd_boolean error; | |
b49e97c9 TS |
486 | }; |
487 | ||
6ae68ba3 MR |
488 | /* MIPS ELF private object data. */ |
489 | ||
490 | struct mips_elf_obj_tdata | |
491 | { | |
492 | /* Generic ELF private object data. */ | |
493 | struct elf_obj_tdata root; | |
494 | ||
495 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
496 | bfd *abi_fp_bfd; | |
ee227692 RS |
497 | |
498 | /* The GOT requirements of input bfds. */ | |
499 | struct mips_got_info *got; | |
698600e4 AM |
500 | |
501 | /* Used by _bfd_mips_elf_find_nearest_line. The structure could be | |
502 | included directly in this one, but there's no point to wasting | |
503 | the memory just for the infrequently called find_nearest_line. */ | |
504 | struct mips_elf_find_line *find_line_info; | |
505 | ||
506 | /* An array of stub sections indexed by symbol number. */ | |
507 | asection **local_stubs; | |
508 | asection **local_call_stubs; | |
509 | ||
510 | /* The Irix 5 support uses two virtual sections, which represent | |
511 | text/data symbols defined in dynamic objects. */ | |
512 | asymbol *elf_data_symbol; | |
513 | asymbol *elf_text_symbol; | |
514 | asection *elf_data_section; | |
515 | asection *elf_text_section; | |
6ae68ba3 MR |
516 | }; |
517 | ||
518 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
519 | ||
520 | #define mips_elf_tdata(bfd) \ | |
521 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
522 | ||
0f20cc35 DJ |
523 | #define TLS_RELOC_P(r_type) \ |
524 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
525 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
526 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
527 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
528 | || r_type == R_MIPS_TLS_GD \ | |
529 | || r_type == R_MIPS_TLS_LDM \ | |
530 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
531 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
532 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
533 | || r_type == R_MIPS_TLS_TPREL32 \ | |
534 | || r_type == R_MIPS_TLS_TPREL64 \ | |
535 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 536 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
537 | || r_type == R_MIPS16_TLS_GD \ |
538 | || r_type == R_MIPS16_TLS_LDM \ | |
539 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
540 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
541 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
542 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
543 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
544 | || r_type == R_MICROMIPS_TLS_GD \ |
545 | || r_type == R_MICROMIPS_TLS_LDM \ | |
546 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
547 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
548 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
549 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
550 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 551 | |
b49e97c9 TS |
552 | /* Structure used to pass information to mips_elf_output_extsym. */ |
553 | ||
554 | struct extsym_info | |
555 | { | |
9e4aeb93 RS |
556 | bfd *abfd; |
557 | struct bfd_link_info *info; | |
b49e97c9 TS |
558 | struct ecoff_debug_info *debug; |
559 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 560 | bfd_boolean failed; |
b49e97c9 TS |
561 | }; |
562 | ||
8dc1a139 | 563 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
564 | |
565 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
566 | { | |
567 | "_procedure_table", | |
568 | "_procedure_string_table", | |
569 | "_procedure_table_size", | |
570 | NULL | |
571 | }; | |
572 | ||
573 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 574 | IRIX5. */ |
b49e97c9 TS |
575 | |
576 | typedef struct | |
577 | { | |
578 | unsigned long id1; /* Always one? */ | |
579 | unsigned long num; /* Number of compact relocation entries. */ | |
580 | unsigned long id2; /* Always two? */ | |
581 | unsigned long offset; /* The file offset of the first relocation. */ | |
582 | unsigned long reserved0; /* Zero? */ | |
583 | unsigned long reserved1; /* Zero? */ | |
584 | } Elf32_compact_rel; | |
585 | ||
586 | typedef struct | |
587 | { | |
588 | bfd_byte id1[4]; | |
589 | bfd_byte num[4]; | |
590 | bfd_byte id2[4]; | |
591 | bfd_byte offset[4]; | |
592 | bfd_byte reserved0[4]; | |
593 | bfd_byte reserved1[4]; | |
594 | } Elf32_External_compact_rel; | |
595 | ||
596 | typedef struct | |
597 | { | |
598 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
599 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
600 | unsigned int dist2to : 8; | |
601 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
602 | unsigned long konst; /* KONST field. See below. */ | |
603 | unsigned long vaddr; /* VADDR to be relocated. */ | |
604 | } Elf32_crinfo; | |
605 | ||
606 | typedef struct | |
607 | { | |
608 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
609 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
610 | unsigned int dist2to : 8; | |
611 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
612 | unsigned long konst; /* KONST field. See below. */ | |
613 | } Elf32_crinfo2; | |
614 | ||
615 | typedef struct | |
616 | { | |
617 | bfd_byte info[4]; | |
618 | bfd_byte konst[4]; | |
619 | bfd_byte vaddr[4]; | |
620 | } Elf32_External_crinfo; | |
621 | ||
622 | typedef struct | |
623 | { | |
624 | bfd_byte info[4]; | |
625 | bfd_byte konst[4]; | |
626 | } Elf32_External_crinfo2; | |
627 | ||
628 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
629 | ||
630 | #define CRINFO_CTYPE (0x1) | |
631 | #define CRINFO_CTYPE_SH (31) | |
632 | #define CRINFO_RTYPE (0xf) | |
633 | #define CRINFO_RTYPE_SH (27) | |
634 | #define CRINFO_DIST2TO (0xff) | |
635 | #define CRINFO_DIST2TO_SH (19) | |
636 | #define CRINFO_RELVADDR (0x7ffff) | |
637 | #define CRINFO_RELVADDR_SH (0) | |
638 | ||
639 | /* A compact relocation info has long (3 words) or short (2 words) | |
640 | formats. A short format doesn't have VADDR field and relvaddr | |
641 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
642 | #define CRF_MIPS_LONG 1 | |
643 | #define CRF_MIPS_SHORT 0 | |
644 | ||
645 | /* There are 4 types of compact relocation at least. The value KONST | |
646 | has different meaning for each type: | |
647 | ||
648 | (type) (konst) | |
649 | CT_MIPS_REL32 Address in data | |
650 | CT_MIPS_WORD Address in word (XXX) | |
651 | CT_MIPS_GPHI_LO GP - vaddr | |
652 | CT_MIPS_JMPAD Address to jump | |
653 | */ | |
654 | ||
655 | #define CRT_MIPS_REL32 0xa | |
656 | #define CRT_MIPS_WORD 0xb | |
657 | #define CRT_MIPS_GPHI_LO 0xc | |
658 | #define CRT_MIPS_JMPAD 0xd | |
659 | ||
660 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
661 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
662 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
663 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
664 | \f | |
665 | /* The structure of the runtime procedure descriptor created by the | |
666 | loader for use by the static exception system. */ | |
667 | ||
668 | typedef struct runtime_pdr { | |
ae9a127f NC |
669 | bfd_vma adr; /* Memory address of start of procedure. */ |
670 | long regmask; /* Save register mask. */ | |
671 | long regoffset; /* Save register offset. */ | |
672 | long fregmask; /* Save floating point register mask. */ | |
673 | long fregoffset; /* Save floating point register offset. */ | |
674 | long frameoffset; /* Frame size. */ | |
675 | short framereg; /* Frame pointer register. */ | |
676 | short pcreg; /* Offset or reg of return pc. */ | |
677 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 678 | long reserved; |
ae9a127f | 679 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
680 | } RPDR, *pRPDR; |
681 | #define cbRPDR sizeof (RPDR) | |
682 | #define rpdNil ((pRPDR) 0) | |
683 | \f | |
b15e6682 | 684 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
685 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
686 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 687 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 688 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
689 | static bfd_vma mips_elf_high |
690 | (bfd_vma); | |
b34976b6 | 691 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
692 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
693 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
694 | bfd_vma *, asection *); | |
f4416af6 | 695 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 696 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 697 | |
b49e97c9 TS |
698 | /* This will be used when we sort the dynamic relocation records. */ |
699 | static bfd *reldyn_sorting_bfd; | |
700 | ||
6d30f5b2 NC |
701 | /* True if ABFD is for CPUs with load interlocking that include |
702 | non-MIPS1 CPUs and R3900. */ | |
703 | #define LOAD_INTERLOCKS_P(abfd) \ | |
704 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
705 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
706 | ||
cd8d5a82 CF |
707 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
708 | This should be safe for all architectures. We enable this predicate | |
709 | for RM9000 for now. */ | |
710 | #define JAL_TO_BAL_P(abfd) \ | |
711 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
712 | ||
713 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
714 | This should be safe for all architectures. We enable this predicate for | |
715 | all CPUs. */ | |
716 | #define JALR_TO_BAL_P(abfd) 1 | |
717 | ||
38a7df63 CF |
718 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
719 | This should be safe for all architectures. We enable this predicate for | |
720 | all CPUs. */ | |
721 | #define JR_TO_B_P(abfd) 1 | |
722 | ||
861fb55a DJ |
723 | /* True if ABFD is a PIC object. */ |
724 | #define PIC_OBJECT_P(abfd) \ | |
725 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
726 | ||
b49e97c9 | 727 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
728 | #define ABI_N32_P(abfd) \ |
729 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
730 | ||
4a14403c | 731 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 732 | #define ABI_64_P(abfd) \ |
141ff970 | 733 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 734 | |
4a14403c TS |
735 | /* Nonzero if ABFD is using NewABI conventions. */ |
736 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
737 | ||
e8faf7d1 MR |
738 | /* Nonzero if ABFD has microMIPS code. */ |
739 | #define MICROMIPS_P(abfd) \ | |
740 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0) | |
741 | ||
4a14403c | 742 | /* The IRIX compatibility level we are striving for. */ |
b49e97c9 TS |
743 | #define IRIX_COMPAT(abfd) \ |
744 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
745 | ||
b49e97c9 TS |
746 | /* Whether we are trying to be compatible with IRIX at all. */ |
747 | #define SGI_COMPAT(abfd) \ | |
748 | (IRIX_COMPAT (abfd) != ict_none) | |
749 | ||
750 | /* The name of the options section. */ | |
751 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 752 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 753 | |
cc2e31b9 RS |
754 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
755 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
756 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
757 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
758 | ||
943284cc DJ |
759 | /* Whether the section is readonly. */ |
760 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
761 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
762 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
763 | ||
b49e97c9 | 764 | /* The name of the stub section. */ |
ca07892d | 765 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
766 | |
767 | /* The size of an external REL relocation. */ | |
768 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
769 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
770 | ||
0a44bf69 RS |
771 | /* The size of an external RELA relocation. */ |
772 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
773 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
774 | ||
b49e97c9 TS |
775 | /* The size of an external dynamic table entry. */ |
776 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
777 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
778 | ||
779 | /* The size of a GOT entry. */ | |
780 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
781 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
782 | ||
b4082c70 DD |
783 | /* The size of the .rld_map section. */ |
784 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
785 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
786 | ||
b49e97c9 TS |
787 | /* The size of a symbol-table entry. */ |
788 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
789 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
790 | ||
791 | /* The default alignment for sections, as a power of two. */ | |
792 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 793 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
794 | |
795 | /* Get word-sized data. */ | |
796 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
797 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
798 | ||
799 | /* Put out word-sized data. */ | |
800 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
801 | (ABI_64_P (abfd) \ | |
802 | ? bfd_put_64 (abfd, val, ptr) \ | |
803 | : bfd_put_32 (abfd, val, ptr)) | |
804 | ||
861fb55a DJ |
805 | /* The opcode for word-sized loads (LW or LD). */ |
806 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
807 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
808 | ||
b49e97c9 | 809 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 810 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 811 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
812 | |
813 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
814 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
815 | ||
0a44bf69 RS |
816 | /* The name of the dynamic relocation section. */ |
817 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
818 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
819 | ||
b49e97c9 TS |
820 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
821 | from smaller values. Start with zero, widen, *then* decrement. */ | |
822 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 823 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 824 | |
51e38d68 RS |
825 | /* The value to write into got[1] for SVR4 targets, to identify it is |
826 | a GNU object. The dynamic linker can then use got[1] to store the | |
827 | module pointer. */ | |
828 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
829 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
830 | ||
f4416af6 | 831 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
832 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
833 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
834 | |
835 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
836 | offsets from $gp. */ | |
0a44bf69 | 837 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 838 | |
6a691779 | 839 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
840 | #define STUB_LW(abfd) \ |
841 | ((ABI_64_P (abfd) \ | |
842 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
843 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
844 | #define STUB_MOVE(abfd) \ | |
845 | ((ABI_64_P (abfd) \ | |
846 | ? 0x03e0782d /* daddu t7,ra */ \ | |
847 | : 0x03e07821)) /* addu t7,ra */ | |
848 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
849 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
850 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
851 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
852 | #define STUB_LI16S(abfd, VAL) \ |
853 | ((ABI_64_P (abfd) \ | |
854 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
855 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
856 | ||
5108fc1b RS |
857 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
858 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
859 | |
860 | /* The name of the dynamic interpreter. This is put in the .interp | |
861 | section. */ | |
862 | ||
863 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
864 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
865 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
866 | : "/usr/lib/libc.so.1") | |
867 | ||
868 | #ifdef BFD64 | |
ee6423ed AO |
869 | #define MNAME(bfd,pre,pos) \ |
870 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
871 | #define ELF_R_SYM(bfd, i) \ |
872 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
873 | #define ELF_R_TYPE(bfd, i) \ | |
874 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
875 | #define ELF_R_INFO(bfd, s, t) \ | |
876 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
877 | #else | |
ee6423ed | 878 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
879 | #define ELF_R_SYM(bfd, i) \ |
880 | (ELF32_R_SYM (i)) | |
881 | #define ELF_R_TYPE(bfd, i) \ | |
882 | (ELF32_R_TYPE (i)) | |
883 | #define ELF_R_INFO(bfd, s, t) \ | |
884 | (ELF32_R_INFO (s, t)) | |
885 | #endif | |
886 | \f | |
887 | /* The mips16 compiler uses a couple of special sections to handle | |
888 | floating point arguments. | |
889 | ||
890 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
891 | copy floating point arguments from the fp regs to the gp regs and | |
892 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
893 | call should be redirected to the stub instead. If no 32 bit | |
894 | function calls FNNAME, the stub should be discarded. We need to | |
895 | consider any reference to the function, not just a call, because | |
896 | if the address of the function is taken we will need the stub, | |
897 | since the address might be passed to a 32 bit function. | |
898 | ||
899 | Section names that look like .mips16.call.FNNAME contain stubs | |
900 | that copy floating point arguments from the gp regs to the fp | |
901 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
902 | then any 16 bit function that calls FNNAME should be redirected | |
903 | to the stub instead. If FNNAME is not a 32 bit function, the | |
904 | stub should be discarded. | |
905 | ||
906 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
907 | which call FNNAME and then copy the return value from the fp regs | |
908 | to the gp regs. These stubs store the return value in $18 while | |
909 | calling FNNAME; any function which might call one of these stubs | |
910 | must arrange to save $18 around the call. (This case is not | |
911 | needed for 32 bit functions that call 16 bit functions, because | |
912 | 16 bit functions always return floating point values in both | |
913 | $f0/$f1 and $2/$3.) | |
914 | ||
915 | Note that in all cases FNNAME might be defined statically. | |
916 | Therefore, FNNAME is not used literally. Instead, the relocation | |
917 | information will indicate which symbol the section is for. | |
918 | ||
919 | We record any stubs that we find in the symbol table. */ | |
920 | ||
921 | #define FN_STUB ".mips16.fn." | |
922 | #define CALL_STUB ".mips16.call." | |
923 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
924 | |
925 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
926 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
927 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 928 | \f |
861fb55a | 929 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
930 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
931 | { | |
861fb55a DJ |
932 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
933 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
934 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
935 | 0x031cc023, /* subu $24, $24, $28 */ | |
81f5d455 | 936 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
937 | 0x0018c082, /* srl $24, $24, 2 */ |
938 | 0x0320f809, /* jalr $25 */ | |
939 | 0x2718fffe /* subu $24, $24, 2 */ | |
940 | }; | |
941 | ||
942 | /* The format of the first PLT entry in an N32 executable. Different | |
943 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
944 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
945 | { | |
861fb55a DJ |
946 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
947 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
948 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
949 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 950 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
951 | 0x0018c082, /* srl $24, $24, 2 */ |
952 | 0x0320f809, /* jalr $25 */ | |
953 | 0x2718fffe /* subu $24, $24, 2 */ | |
954 | }; | |
955 | ||
956 | /* The format of the first PLT entry in an N64 executable. Different | |
957 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
958 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
959 | { | |
861fb55a DJ |
960 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
961 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
962 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
963 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 964 | 0x03e0782d, /* move $15, $31 # 64-bit move (daddu) */ |
861fb55a DJ |
965 | 0x0018c0c2, /* srl $24, $24, 3 */ |
966 | 0x0320f809, /* jalr $25 */ | |
967 | 0x2718fffe /* subu $24, $24, 2 */ | |
968 | }; | |
969 | ||
970 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
971 | static const bfd_vma mips_exec_plt_entry[] = |
972 | { | |
861fb55a DJ |
973 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
974 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
975 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
976 | 0x03200008 /* jr $25 */ | |
977 | }; | |
978 | ||
0a44bf69 | 979 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
980 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
981 | { | |
0a44bf69 RS |
982 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
983 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
984 | 0x8f390008, /* lw t9, 8(t9) */ | |
985 | 0x00000000, /* nop */ | |
986 | 0x03200008, /* jr t9 */ | |
987 | 0x00000000 /* nop */ | |
988 | }; | |
989 | ||
990 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
991 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
992 | { | |
0a44bf69 RS |
993 | 0x10000000, /* b .PLT_resolver */ |
994 | 0x24180000, /* li t8, <pltindex> */ | |
995 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
996 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
997 | 0x8f390000, /* lw t9, 0(t9) */ | |
998 | 0x00000000, /* nop */ | |
999 | 0x03200008, /* jr t9 */ | |
1000 | 0x00000000 /* nop */ | |
1001 | }; | |
1002 | ||
1003 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1004 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1005 | { | |
0a44bf69 RS |
1006 | 0x8f990008, /* lw t9, 8(gp) */ |
1007 | 0x00000000, /* nop */ | |
1008 | 0x03200008, /* jr t9 */ | |
1009 | 0x00000000, /* nop */ | |
1010 | 0x00000000, /* nop */ | |
1011 | 0x00000000 /* nop */ | |
1012 | }; | |
1013 | ||
1014 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1015 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1016 | { | |
0a44bf69 RS |
1017 | 0x10000000, /* b .PLT_resolver */ |
1018 | 0x24180000 /* li t8, <pltindex> */ | |
1019 | }; | |
1020 | \f | |
d21911ea MR |
1021 | /* microMIPS 32-bit opcode helper installer. */ |
1022 | ||
1023 | static void | |
1024 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1025 | { | |
1026 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
1027 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); | |
1028 | } | |
1029 | ||
1030 | /* microMIPS 32-bit opcode helper retriever. */ | |
1031 | ||
1032 | static bfd_vma | |
1033 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1034 | { | |
1035 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1036 | } | |
1037 | \f | |
b49e97c9 TS |
1038 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1039 | ||
1040 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1041 | ((struct mips_elf_link_hash_entry *) \ | |
1042 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1043 | (copy), (follow))) | |
1044 | ||
1045 | /* Traverse a MIPS ELF linker hash table. */ | |
1046 | ||
1047 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1048 | (elf_link_hash_traverse \ | |
1049 | (&(table)->root, \ | |
9719ad41 | 1050 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1051 | (info))) |
1052 | ||
0f20cc35 DJ |
1053 | /* Find the base offsets for thread-local storage in this object, |
1054 | for GD/LD and IE/LE respectively. */ | |
1055 | ||
1056 | #define TP_OFFSET 0x7000 | |
1057 | #define DTP_OFFSET 0x8000 | |
1058 | ||
1059 | static bfd_vma | |
1060 | dtprel_base (struct bfd_link_info *info) | |
1061 | { | |
1062 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1063 | if (elf_hash_table (info)->tls_sec == NULL) | |
1064 | return 0; | |
1065 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1066 | } | |
1067 | ||
1068 | static bfd_vma | |
1069 | tprel_base (struct bfd_link_info *info) | |
1070 | { | |
1071 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1072 | if (elf_hash_table (info)->tls_sec == NULL) | |
1073 | return 0; | |
1074 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1075 | } | |
1076 | ||
b49e97c9 TS |
1077 | /* Create an entry in a MIPS ELF linker hash table. */ |
1078 | ||
1079 | static struct bfd_hash_entry * | |
9719ad41 RS |
1080 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1081 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1082 | { |
1083 | struct mips_elf_link_hash_entry *ret = | |
1084 | (struct mips_elf_link_hash_entry *) entry; | |
1085 | ||
1086 | /* Allocate the structure if it has not already been allocated by a | |
1087 | subclass. */ | |
9719ad41 RS |
1088 | if (ret == NULL) |
1089 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1090 | if (ret == NULL) | |
b49e97c9 TS |
1091 | return (struct bfd_hash_entry *) ret; |
1092 | ||
1093 | /* Call the allocation method of the superclass. */ | |
1094 | ret = ((struct mips_elf_link_hash_entry *) | |
1095 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1096 | table, string)); | |
9719ad41 | 1097 | if (ret != NULL) |
b49e97c9 TS |
1098 | { |
1099 | /* Set local fields. */ | |
1100 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1101 | /* We use -2 as a marker to indicate that the information has | |
1102 | not been set. -1 means there is no associated ifd. */ | |
1103 | ret->esym.ifd = -2; | |
861fb55a | 1104 | ret->la25_stub = 0; |
b49e97c9 | 1105 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1106 | ret->fn_stub = NULL; |
b49e97c9 TS |
1107 | ret->call_stub = NULL; |
1108 | ret->call_fp_stub = NULL; | |
634835ae | 1109 | ret->global_got_area = GGA_NONE; |
6ccf4795 | 1110 | ret->got_only_for_calls = TRUE; |
71782a75 | 1111 | ret->readonly_reloc = FALSE; |
861fb55a | 1112 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1113 | ret->no_fn_stub = FALSE; |
1114 | ret->need_fn_stub = FALSE; | |
861fb55a | 1115 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1116 | ret->needs_lazy_stub = FALSE; |
b49e97c9 TS |
1117 | } |
1118 | ||
1119 | return (struct bfd_hash_entry *) ret; | |
1120 | } | |
f0abc2a1 | 1121 | |
6ae68ba3 MR |
1122 | /* Allocate MIPS ELF private object data. */ |
1123 | ||
1124 | bfd_boolean | |
1125 | _bfd_mips_elf_mkobject (bfd *abfd) | |
1126 | { | |
1127 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1128 | MIPS_ELF_DATA); | |
1129 | } | |
1130 | ||
f0abc2a1 | 1131 | bfd_boolean |
9719ad41 | 1132 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1133 | { |
f592407e AM |
1134 | if (!sec->used_by_bfd) |
1135 | { | |
1136 | struct _mips_elf_section_data *sdata; | |
1137 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1138 | |
f592407e AM |
1139 | sdata = bfd_zalloc (abfd, amt); |
1140 | if (sdata == NULL) | |
1141 | return FALSE; | |
1142 | sec->used_by_bfd = sdata; | |
1143 | } | |
f0abc2a1 AM |
1144 | |
1145 | return _bfd_elf_new_section_hook (abfd, sec); | |
1146 | } | |
b49e97c9 TS |
1147 | \f |
1148 | /* Read ECOFF debugging information from a .mdebug section into a | |
1149 | ecoff_debug_info structure. */ | |
1150 | ||
b34976b6 | 1151 | bfd_boolean |
9719ad41 RS |
1152 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1153 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1154 | { |
1155 | HDRR *symhdr; | |
1156 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1157 | char *ext_hdr; |
b49e97c9 TS |
1158 | |
1159 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1160 | memset (debug, 0, sizeof (*debug)); | |
1161 | ||
9719ad41 | 1162 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1163 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1164 | goto error_return; | |
1165 | ||
9719ad41 | 1166 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1167 | swap->external_hdr_size)) |
b49e97c9 TS |
1168 | goto error_return; |
1169 | ||
1170 | symhdr = &debug->symbolic_header; | |
1171 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1172 | ||
1173 | /* The symbolic header contains absolute file offsets and sizes to | |
1174 | read. */ | |
1175 | #define READ(ptr, offset, count, size, type) \ | |
1176 | if (symhdr->count == 0) \ | |
1177 | debug->ptr = NULL; \ | |
1178 | else \ | |
1179 | { \ | |
1180 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1181 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1182 | if (debug->ptr == NULL) \ |
1183 | goto error_return; \ | |
9719ad41 | 1184 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1185 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1186 | goto error_return; \ | |
1187 | } | |
1188 | ||
1189 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1190 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1191 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1192 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1193 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1194 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1195 | union aux_ext *); | |
1196 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1197 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1198 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1199 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1200 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1201 | #undef READ |
1202 | ||
1203 | debug->fdr = NULL; | |
b49e97c9 | 1204 | |
b34976b6 | 1205 | return TRUE; |
b49e97c9 TS |
1206 | |
1207 | error_return: | |
1208 | if (ext_hdr != NULL) | |
1209 | free (ext_hdr); | |
1210 | if (debug->line != NULL) | |
1211 | free (debug->line); | |
1212 | if (debug->external_dnr != NULL) | |
1213 | free (debug->external_dnr); | |
1214 | if (debug->external_pdr != NULL) | |
1215 | free (debug->external_pdr); | |
1216 | if (debug->external_sym != NULL) | |
1217 | free (debug->external_sym); | |
1218 | if (debug->external_opt != NULL) | |
1219 | free (debug->external_opt); | |
1220 | if (debug->external_aux != NULL) | |
1221 | free (debug->external_aux); | |
1222 | if (debug->ss != NULL) | |
1223 | free (debug->ss); | |
1224 | if (debug->ssext != NULL) | |
1225 | free (debug->ssext); | |
1226 | if (debug->external_fdr != NULL) | |
1227 | free (debug->external_fdr); | |
1228 | if (debug->external_rfd != NULL) | |
1229 | free (debug->external_rfd); | |
1230 | if (debug->external_ext != NULL) | |
1231 | free (debug->external_ext); | |
b34976b6 | 1232 | return FALSE; |
b49e97c9 TS |
1233 | } |
1234 | \f | |
1235 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1236 | ||
1237 | static void | |
9719ad41 | 1238 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1239 | { |
1240 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1241 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1242 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1243 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1244 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1245 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1246 | ||
1247 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1248 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1249 | ||
1250 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1251 | } |
1252 | ||
1253 | /* Create a runtime procedure table from the .mdebug section. */ | |
1254 | ||
b34976b6 | 1255 | static bfd_boolean |
9719ad41 RS |
1256 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1257 | struct bfd_link_info *info, asection *s, | |
1258 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1259 | { |
1260 | const struct ecoff_debug_swap *swap; | |
1261 | HDRR *hdr = &debug->symbolic_header; | |
1262 | RPDR *rpdr, *rp; | |
1263 | struct rpdr_ext *erp; | |
9719ad41 | 1264 | void *rtproc; |
b49e97c9 TS |
1265 | struct pdr_ext *epdr; |
1266 | struct sym_ext *esym; | |
1267 | char *ss, **sv; | |
1268 | char *str; | |
1269 | bfd_size_type size; | |
1270 | bfd_size_type count; | |
1271 | unsigned long sindex; | |
1272 | unsigned long i; | |
1273 | PDR pdr; | |
1274 | SYMR sym; | |
1275 | const char *no_name_func = _("static procedure (no name)"); | |
1276 | ||
1277 | epdr = NULL; | |
1278 | rpdr = NULL; | |
1279 | esym = NULL; | |
1280 | ss = NULL; | |
1281 | sv = NULL; | |
1282 | ||
1283 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1284 | ||
1285 | sindex = strlen (no_name_func) + 1; | |
1286 | count = hdr->ipdMax; | |
1287 | if (count > 0) | |
1288 | { | |
1289 | size = swap->external_pdr_size; | |
1290 | ||
9719ad41 | 1291 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1292 | if (epdr == NULL) |
1293 | goto error_return; | |
1294 | ||
9719ad41 | 1295 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1296 | goto error_return; |
1297 | ||
1298 | size = sizeof (RPDR); | |
9719ad41 | 1299 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1300 | if (rpdr == NULL) |
1301 | goto error_return; | |
1302 | ||
1303 | size = sizeof (char *); | |
9719ad41 | 1304 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1305 | if (sv == NULL) |
1306 | goto error_return; | |
1307 | ||
1308 | count = hdr->isymMax; | |
1309 | size = swap->external_sym_size; | |
9719ad41 | 1310 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1311 | if (esym == NULL) |
1312 | goto error_return; | |
1313 | ||
9719ad41 | 1314 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1315 | goto error_return; |
1316 | ||
1317 | count = hdr->issMax; | |
9719ad41 | 1318 | ss = bfd_malloc (count); |
b49e97c9 TS |
1319 | if (ss == NULL) |
1320 | goto error_return; | |
f075ee0c | 1321 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1322 | goto error_return; |
1323 | ||
1324 | count = hdr->ipdMax; | |
1325 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1326 | { | |
9719ad41 RS |
1327 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1328 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1329 | rp->adr = sym.value; |
1330 | rp->regmask = pdr.regmask; | |
1331 | rp->regoffset = pdr.regoffset; | |
1332 | rp->fregmask = pdr.fregmask; | |
1333 | rp->fregoffset = pdr.fregoffset; | |
1334 | rp->frameoffset = pdr.frameoffset; | |
1335 | rp->framereg = pdr.framereg; | |
1336 | rp->pcreg = pdr.pcreg; | |
1337 | rp->irpss = sindex; | |
1338 | sv[i] = ss + sym.iss; | |
1339 | sindex += strlen (sv[i]) + 1; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1344 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1345 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1346 | if (rtproc == NULL) |
1347 | { | |
1348 | mips_elf_hash_table (info)->procedure_count = 0; | |
1349 | goto error_return; | |
1350 | } | |
1351 | ||
1352 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1353 | ||
9719ad41 | 1354 | erp = rtproc; |
b49e97c9 TS |
1355 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1356 | erp++; | |
1357 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1358 | strcpy (str, no_name_func); | |
1359 | str += strlen (no_name_func) + 1; | |
1360 | for (i = 0; i < count; i++) | |
1361 | { | |
1362 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1363 | strcpy (str, sv[i]); | |
1364 | str += strlen (sv[i]) + 1; | |
1365 | } | |
1366 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1367 | ||
1368 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1369 | s->size = size; |
9719ad41 | 1370 | s->contents = rtproc; |
b49e97c9 TS |
1371 | |
1372 | /* Skip this section later on (I don't think this currently | |
1373 | matters, but someday it might). */ | |
8423293d | 1374 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1375 | |
1376 | if (epdr != NULL) | |
1377 | free (epdr); | |
1378 | if (rpdr != NULL) | |
1379 | free (rpdr); | |
1380 | if (esym != NULL) | |
1381 | free (esym); | |
1382 | if (ss != NULL) | |
1383 | free (ss); | |
1384 | if (sv != NULL) | |
1385 | free (sv); | |
1386 | ||
b34976b6 | 1387 | return TRUE; |
b49e97c9 TS |
1388 | |
1389 | error_return: | |
1390 | if (epdr != NULL) | |
1391 | free (epdr); | |
1392 | if (rpdr != NULL) | |
1393 | free (rpdr); | |
1394 | if (esym != NULL) | |
1395 | free (esym); | |
1396 | if (ss != NULL) | |
1397 | free (ss); | |
1398 | if (sv != NULL) | |
1399 | free (sv); | |
b34976b6 | 1400 | return FALSE; |
b49e97c9 | 1401 | } |
738e5348 | 1402 | \f |
861fb55a DJ |
1403 | /* We're going to create a stub for H. Create a symbol for the stub's |
1404 | value and size, to help make the disassembly easier to read. */ | |
1405 | ||
1406 | static bfd_boolean | |
1407 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1408 | struct mips_elf_link_hash_entry *h, | |
1409 | const char *prefix, asection *s, bfd_vma value, | |
1410 | bfd_vma size) | |
1411 | { | |
1412 | struct bfd_link_hash_entry *bh; | |
1413 | struct elf_link_hash_entry *elfh; | |
1414 | const char *name; | |
1415 | ||
df58fc94 RS |
1416 | if (ELF_ST_IS_MICROMIPS (h->root.other)) |
1417 | value |= 1; | |
1418 | ||
861fb55a DJ |
1419 | /* Create a new symbol. */ |
1420 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1421 | bh = NULL; | |
1422 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1423 | BSF_LOCAL, s, value, NULL, | |
1424 | TRUE, FALSE, &bh)) | |
1425 | return FALSE; | |
1426 | ||
1427 | /* Make it a local function. */ | |
1428 | elfh = (struct elf_link_hash_entry *) bh; | |
1429 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1430 | elfh->size = size; | |
1431 | elfh->forced_local = 1; | |
1432 | return TRUE; | |
1433 | } | |
1434 | ||
738e5348 RS |
1435 | /* We're about to redefine H. Create a symbol to represent H's |
1436 | current value and size, to help make the disassembly easier | |
1437 | to read. */ | |
1438 | ||
1439 | static bfd_boolean | |
1440 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1441 | struct mips_elf_link_hash_entry *h, | |
1442 | const char *prefix) | |
1443 | { | |
1444 | struct bfd_link_hash_entry *bh; | |
1445 | struct elf_link_hash_entry *elfh; | |
1446 | const char *name; | |
1447 | asection *s; | |
1448 | bfd_vma value; | |
1449 | ||
1450 | /* Read the symbol's value. */ | |
1451 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1452 | || h->root.root.type == bfd_link_hash_defweak); | |
1453 | s = h->root.root.u.def.section; | |
1454 | value = h->root.root.u.def.value; | |
1455 | ||
1456 | /* Create a new symbol. */ | |
1457 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1458 | bh = NULL; | |
1459 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1460 | BSF_LOCAL, s, value, NULL, | |
1461 | TRUE, FALSE, &bh)) | |
1462 | return FALSE; | |
1463 | ||
1464 | /* Make it local and copy the other attributes from H. */ | |
1465 | elfh = (struct elf_link_hash_entry *) bh; | |
1466 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1467 | elfh->other = h->root.other; | |
1468 | elfh->size = h->root.size; | |
1469 | elfh->forced_local = 1; | |
1470 | return TRUE; | |
1471 | } | |
1472 | ||
1473 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1474 | function rather than to a hard-float stub. */ | |
1475 | ||
1476 | static bfd_boolean | |
1477 | section_allows_mips16_refs_p (asection *section) | |
1478 | { | |
1479 | const char *name; | |
1480 | ||
1481 | name = bfd_get_section_name (section->owner, section); | |
1482 | return (FN_STUB_P (name) | |
1483 | || CALL_STUB_P (name) | |
1484 | || CALL_FP_STUB_P (name) | |
1485 | || strcmp (name, ".pdr") == 0); | |
1486 | } | |
1487 | ||
1488 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1489 | stub section of some kind. Return the R_SYMNDX of the target | |
1490 | function, or 0 if we can't decide which function that is. */ | |
1491 | ||
1492 | static unsigned long | |
cb4437b8 MR |
1493 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1494 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1495 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1496 | const Elf_Internal_Rela *relend) |
1497 | { | |
cb4437b8 | 1498 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1499 | const Elf_Internal_Rela *rel; |
1500 | ||
cb4437b8 MR |
1501 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1502 | one in a compound relocation. */ | |
1503 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1504 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1505 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1506 | ||
1507 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1508 | the traditional behavior. */ | |
1509 | if (relocs < relend) | |
1510 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1511 | ||
1512 | return 0; | |
1513 | } | |
b49e97c9 TS |
1514 | |
1515 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1516 | discard them. */ | |
1517 | ||
861fb55a DJ |
1518 | static void |
1519 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1520 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1521 | { |
738e5348 RS |
1522 | /* Dynamic symbols must use the standard call interface, in case other |
1523 | objects try to call them. */ | |
1524 | if (h->fn_stub != NULL | |
1525 | && h->root.dynindx != -1) | |
1526 | { | |
1527 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1528 | h->need_fn_stub = TRUE; | |
1529 | } | |
1530 | ||
b49e97c9 TS |
1531 | if (h->fn_stub != NULL |
1532 | && ! h->need_fn_stub) | |
1533 | { | |
1534 | /* We don't need the fn_stub; the only references to this symbol | |
1535 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1536 | being included in the link. */ | |
eea6121a | 1537 | h->fn_stub->size = 0; |
b49e97c9 TS |
1538 | h->fn_stub->flags &= ~SEC_RELOC; |
1539 | h->fn_stub->reloc_count = 0; | |
1540 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1541 | } | |
1542 | ||
1543 | if (h->call_stub != NULL | |
30c09090 | 1544 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1545 | { |
1546 | /* We don't need the call_stub; this is a 16 bit function, so | |
1547 | calls from other 16 bit functions are OK. Clobber the size | |
1548 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1549 | h->call_stub->size = 0; |
b49e97c9 TS |
1550 | h->call_stub->flags &= ~SEC_RELOC; |
1551 | h->call_stub->reloc_count = 0; | |
1552 | h->call_stub->flags |= SEC_EXCLUDE; | |
1553 | } | |
1554 | ||
1555 | if (h->call_fp_stub != NULL | |
30c09090 | 1556 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1557 | { |
1558 | /* We don't need the call_stub; this is a 16 bit function, so | |
1559 | calls from other 16 bit functions are OK. Clobber the size | |
1560 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1561 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1562 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1563 | h->call_fp_stub->reloc_count = 0; | |
1564 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1565 | } | |
861fb55a DJ |
1566 | } |
1567 | ||
1568 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1569 | ||
1570 | static hashval_t | |
1571 | mips_elf_la25_stub_hash (const void *entry_) | |
1572 | { | |
1573 | const struct mips_elf_la25_stub *entry; | |
1574 | ||
1575 | entry = (struct mips_elf_la25_stub *) entry_; | |
1576 | return entry->h->root.root.u.def.section->id | |
1577 | + entry->h->root.root.u.def.value; | |
1578 | } | |
1579 | ||
1580 | static int | |
1581 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1582 | { | |
1583 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1584 | ||
1585 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1586 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1587 | return ((entry1->h->root.root.u.def.section | |
1588 | == entry2->h->root.root.u.def.section) | |
1589 | && (entry1->h->root.root.u.def.value | |
1590 | == entry2->h->root.root.u.def.value)); | |
1591 | } | |
1592 | ||
1593 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1594 | the linker's implementation of add_stub_function. Return true on | |
1595 | success. */ | |
1596 | ||
1597 | bfd_boolean | |
1598 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1599 | asection *(*fn) (const char *, asection *, | |
1600 | asection *)) | |
1601 | { | |
1602 | struct mips_elf_link_hash_table *htab; | |
1603 | ||
1604 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1605 | if (htab == NULL) |
1606 | return FALSE; | |
1607 | ||
861fb55a DJ |
1608 | htab->add_stub_section = fn; |
1609 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1610 | mips_elf_la25_stub_eq, NULL); | |
1611 | if (htab->la25_stubs == NULL) | |
1612 | return FALSE; | |
1613 | ||
1614 | return TRUE; | |
1615 | } | |
1616 | ||
1617 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1618 | that it or its fn_stub might need $25 to be valid on entry. |
1619 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1620 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1621 | entry points are of interest here. */ | |
861fb55a DJ |
1622 | |
1623 | static bfd_boolean | |
1624 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1625 | { | |
1626 | return ((h->root.root.type == bfd_link_hash_defined | |
1627 | || h->root.root.type == bfd_link_hash_defweak) | |
1628 | && h->root.def_regular | |
1629 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
8f0c309a CLT |
1630 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1631 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1632 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1633 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1634 | } | |
1635 | ||
8f0c309a CLT |
1636 | /* Set *SEC to the input section that contains the target of STUB. |
1637 | Return the offset of the target from the start of that section. */ | |
1638 | ||
1639 | static bfd_vma | |
1640 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1641 | asection **sec) | |
1642 | { | |
1643 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1644 | { | |
1645 | BFD_ASSERT (stub->h->need_fn_stub); | |
1646 | *sec = stub->h->fn_stub; | |
1647 | return 0; | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | *sec = stub->h->root.root.u.def.section; | |
1652 | return stub->h->root.root.u.def.value; | |
1653 | } | |
1654 | } | |
1655 | ||
861fb55a DJ |
1656 | /* STUB describes an la25 stub that we have decided to implement |
1657 | by inserting an LUI/ADDIU pair before the target function. | |
1658 | Create the section and redirect the function symbol to it. */ | |
1659 | ||
1660 | static bfd_boolean | |
1661 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1662 | struct bfd_link_info *info) | |
1663 | { | |
1664 | struct mips_elf_link_hash_table *htab; | |
1665 | char *name; | |
1666 | asection *s, *input_section; | |
1667 | unsigned int align; | |
1668 | ||
1669 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1670 | if (htab == NULL) |
1671 | return FALSE; | |
861fb55a DJ |
1672 | |
1673 | /* Create a unique name for the new section. */ | |
1674 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1675 | if (name == NULL) | |
1676 | return FALSE; | |
1677 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1678 | ||
1679 | /* Create the section. */ | |
8f0c309a | 1680 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1681 | s = htab->add_stub_section (name, input_section, |
1682 | input_section->output_section); | |
1683 | if (s == NULL) | |
1684 | return FALSE; | |
1685 | ||
1686 | /* Make sure that any padding goes before the stub. */ | |
1687 | align = input_section->alignment_power; | |
1688 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1689 | return FALSE; | |
1690 | if (align > 3) | |
1691 | s->size = (1 << align) - 8; | |
1692 | ||
1693 | /* Create a symbol for the stub. */ | |
1694 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1695 | stub->stub_section = s; | |
1696 | stub->offset = s->size; | |
1697 | ||
1698 | /* Allocate room for it. */ | |
1699 | s->size += 8; | |
1700 | return TRUE; | |
1701 | } | |
1702 | ||
1703 | /* STUB describes an la25 stub that we have decided to implement | |
1704 | with a separate trampoline. Allocate room for it and redirect | |
1705 | the function symbol to it. */ | |
1706 | ||
1707 | static bfd_boolean | |
1708 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1709 | struct bfd_link_info *info) | |
1710 | { | |
1711 | struct mips_elf_link_hash_table *htab; | |
1712 | asection *s; | |
1713 | ||
1714 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1715 | if (htab == NULL) |
1716 | return FALSE; | |
861fb55a DJ |
1717 | |
1718 | /* Create a trampoline section, if we haven't already. */ | |
1719 | s = htab->strampoline; | |
1720 | if (s == NULL) | |
1721 | { | |
1722 | asection *input_section = stub->h->root.root.u.def.section; | |
1723 | s = htab->add_stub_section (".text", NULL, | |
1724 | input_section->output_section); | |
1725 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1726 | return FALSE; | |
1727 | htab->strampoline = s; | |
1728 | } | |
1729 | ||
1730 | /* Create a symbol for the stub. */ | |
1731 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1732 | stub->stub_section = s; | |
1733 | stub->offset = s->size; | |
1734 | ||
1735 | /* Allocate room for it. */ | |
1736 | s->size += 16; | |
1737 | return TRUE; | |
1738 | } | |
1739 | ||
1740 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1741 | appropriate stub exists and point H at it. */ | |
1742 | ||
1743 | static bfd_boolean | |
1744 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1745 | struct mips_elf_link_hash_entry *h) | |
1746 | { | |
1747 | struct mips_elf_link_hash_table *htab; | |
1748 | struct mips_elf_la25_stub search, *stub; | |
1749 | bfd_boolean use_trampoline_p; | |
1750 | asection *s; | |
1751 | bfd_vma value; | |
1752 | void **slot; | |
1753 | ||
861fb55a DJ |
1754 | /* Describe the stub we want. */ |
1755 | search.stub_section = NULL; | |
1756 | search.offset = 0; | |
1757 | search.h = h; | |
1758 | ||
1759 | /* See if we've already created an equivalent stub. */ | |
1760 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1761 | if (htab == NULL) |
1762 | return FALSE; | |
1763 | ||
861fb55a DJ |
1764 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1765 | if (slot == NULL) | |
1766 | return FALSE; | |
1767 | ||
1768 | stub = (struct mips_elf_la25_stub *) *slot; | |
1769 | if (stub != NULL) | |
1770 | { | |
1771 | /* We can reuse the existing stub. */ | |
1772 | h->la25_stub = stub; | |
1773 | return TRUE; | |
1774 | } | |
1775 | ||
1776 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1777 | stub = bfd_malloc (sizeof (search)); | |
1778 | if (stub == NULL) | |
1779 | return FALSE; | |
1780 | *stub = search; | |
1781 | *slot = stub; | |
1782 | ||
8f0c309a CLT |
1783 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
1784 | of the section and if we would need no more than 2 nops. */ | |
1785 | value = mips_elf_get_la25_target (stub, &s); | |
1786 | use_trampoline_p = (value != 0 || s->alignment_power > 4); | |
1787 | ||
861fb55a DJ |
1788 | h->la25_stub = stub; |
1789 | return (use_trampoline_p | |
1790 | ? mips_elf_add_la25_trampoline (stub, info) | |
1791 | : mips_elf_add_la25_intro (stub, info)); | |
1792 | } | |
1793 | ||
1794 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1795 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1796 | ||
1797 | static bfd_boolean | |
1798 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1799 | { | |
1800 | struct mips_htab_traverse_info *hti; | |
1801 | ||
1802 | hti = (struct mips_htab_traverse_info *) data; | |
861fb55a DJ |
1803 | if (!hti->info->relocatable) |
1804 | mips_elf_check_mips16_stubs (hti->info, h); | |
b49e97c9 | 1805 | |
861fb55a DJ |
1806 | if (mips_elf_local_pic_function_p (h)) |
1807 | { | |
ba85c43e NC |
1808 | /* PR 12845: If H is in a section that has been garbage |
1809 | collected it will have its output section set to *ABS*. */ | |
1810 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
1811 | return TRUE; | |
1812 | ||
861fb55a DJ |
1813 | /* H is a function that might need $25 to be valid on entry. |
1814 | If we're creating a non-PIC relocatable object, mark H as | |
1815 | being PIC. If we're creating a non-relocatable object with | |
1816 | non-PIC branches and jumps to H, make sure that H has an la25 | |
1817 | stub. */ | |
1818 | if (hti->info->relocatable) | |
1819 | { | |
1820 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
1821 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
1822 | } | |
1823 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
1824 | { | |
1825 | hti->error = TRUE; | |
1826 | return FALSE; | |
1827 | } | |
1828 | } | |
b34976b6 | 1829 | return TRUE; |
b49e97c9 TS |
1830 | } |
1831 | \f | |
d6f16593 MR |
1832 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1833 | Most mips16 instructions are 16 bits, but these instructions | |
1834 | are 32 bits. | |
1835 | ||
1836 | The format of these instructions is: | |
1837 | ||
1838 | +--------------+--------------------------------+ | |
1839 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1840 | +--------------+--------------------------------+ | |
1841 | | Immediate 15:0 | | |
1842 | +-----------------------------------------------+ | |
1843 | ||
1844 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1845 | Note that the immediate value in the first word is swapped. | |
1846 | ||
1847 | When producing a relocatable object file, R_MIPS16_26 is | |
1848 | handled mostly like R_MIPS_26. In particular, the addend is | |
1849 | stored as a straight 26-bit value in a 32-bit instruction. | |
1850 | (gas makes life simpler for itself by never adjusting a | |
1851 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1852 | always zero). However, the 32 bit instruction is stored as 2 | |
1853 | 16-bit values, rather than a single 32-bit value. In a | |
1854 | big-endian file, the result is the same; in a little-endian | |
1855 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1856 | This is so that a disassembler can recognize the jal | |
1857 | instruction. | |
1858 | ||
1859 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1860 | instruction stored as two 16-bit values. The addend A is the | |
1861 | contents of the targ26 field. The calculation is the same as | |
1862 | R_MIPS_26. When storing the calculated value, reorder the | |
1863 | immediate value as shown above, and don't forget to store the | |
1864 | value as two 16-bit values. | |
1865 | ||
1866 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1867 | defined as | |
1868 | ||
1869 | big-endian: | |
1870 | +--------+----------------------+ | |
1871 | | | | | |
1872 | | | targ26-16 | | |
1873 | |31 26|25 0| | |
1874 | +--------+----------------------+ | |
1875 | ||
1876 | little-endian: | |
1877 | +----------+------+-------------+ | |
1878 | | | | | | |
1879 | | sub1 | | sub2 | | |
1880 | |0 9|10 15|16 31| | |
1881 | +----------+--------------------+ | |
1882 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1883 | ((sub1 << 16) | sub2)). | |
1884 | ||
1885 | When producing a relocatable object file, the calculation is | |
1886 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1887 | When producing a fully linked file, the calculation is | |
1888 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1889 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1890 | ||
738e5348 RS |
1891 | The table below lists the other MIPS16 instruction relocations. |
1892 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1893 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1894 | immediate fields: | |
1895 | ||
1896 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1897 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1898 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1899 | R_MIPS16_HI16 R_MIPS_HI16 | |
1900 | R_MIPS16_LO16 R_MIPS_LO16 | |
1901 | ||
1902 | A typical instruction will have a format like this: | |
d6f16593 MR |
1903 | |
1904 | +--------------+--------------------------------+ | |
1905 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1906 | +--------------+--------------------------------+ | |
1907 | | Major | rx | ry | Imm 4:0 | | |
1908 | +--------------+--------------------------------+ | |
1909 | ||
1910 | EXTEND is the five bit value 11110. Major is the instruction | |
1911 | opcode. | |
1912 | ||
738e5348 RS |
1913 | All we need to do here is shuffle the bits appropriately. |
1914 | As above, the two 16-bit halves must be swapped on a | |
1915 | little-endian system. */ | |
1916 | ||
1917 | static inline bfd_boolean | |
1918 | mips16_reloc_p (int r_type) | |
1919 | { | |
1920 | switch (r_type) | |
1921 | { | |
1922 | case R_MIPS16_26: | |
1923 | case R_MIPS16_GPREL: | |
1924 | case R_MIPS16_GOT16: | |
1925 | case R_MIPS16_CALL16: | |
1926 | case R_MIPS16_HI16: | |
1927 | case R_MIPS16_LO16: | |
d0f13682 CLT |
1928 | case R_MIPS16_TLS_GD: |
1929 | case R_MIPS16_TLS_LDM: | |
1930 | case R_MIPS16_TLS_DTPREL_HI16: | |
1931 | case R_MIPS16_TLS_DTPREL_LO16: | |
1932 | case R_MIPS16_TLS_GOTTPREL: | |
1933 | case R_MIPS16_TLS_TPREL_HI16: | |
1934 | case R_MIPS16_TLS_TPREL_LO16: | |
738e5348 RS |
1935 | return TRUE; |
1936 | ||
1937 | default: | |
1938 | return FALSE; | |
1939 | } | |
1940 | } | |
1941 | ||
df58fc94 RS |
1942 | /* Check if a microMIPS reloc. */ |
1943 | ||
1944 | static inline bfd_boolean | |
1945 | micromips_reloc_p (unsigned int r_type) | |
1946 | { | |
1947 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
1948 | } | |
1949 | ||
1950 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
1951 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
1952 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
1953 | ||
1954 | static inline bfd_boolean | |
1955 | micromips_reloc_shuffle_p (unsigned int r_type) | |
1956 | { | |
1957 | return (micromips_reloc_p (r_type) | |
1958 | && r_type != R_MICROMIPS_PC7_S1 | |
1959 | && r_type != R_MICROMIPS_PC10_S1); | |
1960 | } | |
1961 | ||
738e5348 RS |
1962 | static inline bfd_boolean |
1963 | got16_reloc_p (int r_type) | |
1964 | { | |
df58fc94 RS |
1965 | return (r_type == R_MIPS_GOT16 |
1966 | || r_type == R_MIPS16_GOT16 | |
1967 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
1968 | } |
1969 | ||
1970 | static inline bfd_boolean | |
1971 | call16_reloc_p (int r_type) | |
1972 | { | |
df58fc94 RS |
1973 | return (r_type == R_MIPS_CALL16 |
1974 | || r_type == R_MIPS16_CALL16 | |
1975 | || r_type == R_MICROMIPS_CALL16); | |
1976 | } | |
1977 | ||
1978 | static inline bfd_boolean | |
1979 | got_disp_reloc_p (unsigned int r_type) | |
1980 | { | |
1981 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
1982 | } | |
1983 | ||
1984 | static inline bfd_boolean | |
1985 | got_page_reloc_p (unsigned int r_type) | |
1986 | { | |
1987 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
1988 | } | |
1989 | ||
1990 | static inline bfd_boolean | |
1991 | got_ofst_reloc_p (unsigned int r_type) | |
1992 | { | |
1993 | return r_type == R_MIPS_GOT_OFST || r_type == R_MICROMIPS_GOT_OFST; | |
1994 | } | |
1995 | ||
1996 | static inline bfd_boolean | |
1997 | got_hi16_reloc_p (unsigned int r_type) | |
1998 | { | |
1999 | return r_type == R_MIPS_GOT_HI16 || r_type == R_MICROMIPS_GOT_HI16; | |
2000 | } | |
2001 | ||
2002 | static inline bfd_boolean | |
2003 | got_lo16_reloc_p (unsigned int r_type) | |
2004 | { | |
2005 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2006 | } | |
2007 | ||
2008 | static inline bfd_boolean | |
2009 | call_hi16_reloc_p (unsigned int r_type) | |
2010 | { | |
2011 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2012 | } | |
2013 | ||
2014 | static inline bfd_boolean | |
2015 | call_lo16_reloc_p (unsigned int r_type) | |
2016 | { | |
2017 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2018 | } |
2019 | ||
2020 | static inline bfd_boolean | |
2021 | hi16_reloc_p (int r_type) | |
2022 | { | |
df58fc94 RS |
2023 | return (r_type == R_MIPS_HI16 |
2024 | || r_type == R_MIPS16_HI16 | |
2025 | || r_type == R_MICROMIPS_HI16); | |
738e5348 | 2026 | } |
d6f16593 | 2027 | |
738e5348 RS |
2028 | static inline bfd_boolean |
2029 | lo16_reloc_p (int r_type) | |
2030 | { | |
df58fc94 RS |
2031 | return (r_type == R_MIPS_LO16 |
2032 | || r_type == R_MIPS16_LO16 | |
2033 | || r_type == R_MICROMIPS_LO16); | |
738e5348 RS |
2034 | } |
2035 | ||
2036 | static inline bfd_boolean | |
2037 | mips16_call_reloc_p (int r_type) | |
2038 | { | |
2039 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2040 | } | |
d6f16593 | 2041 | |
38a7df63 CF |
2042 | static inline bfd_boolean |
2043 | jal_reloc_p (int r_type) | |
2044 | { | |
df58fc94 RS |
2045 | return (r_type == R_MIPS_26 |
2046 | || r_type == R_MIPS16_26 | |
2047 | || r_type == R_MICROMIPS_26_S1); | |
2048 | } | |
2049 | ||
2050 | static inline bfd_boolean | |
2051 | micromips_branch_reloc_p (int r_type) | |
2052 | { | |
2053 | return (r_type == R_MICROMIPS_26_S1 | |
2054 | || r_type == R_MICROMIPS_PC16_S1 | |
2055 | || r_type == R_MICROMIPS_PC10_S1 | |
2056 | || r_type == R_MICROMIPS_PC7_S1); | |
2057 | } | |
2058 | ||
2059 | static inline bfd_boolean | |
2060 | tls_gd_reloc_p (unsigned int r_type) | |
2061 | { | |
d0f13682 CLT |
2062 | return (r_type == R_MIPS_TLS_GD |
2063 | || r_type == R_MIPS16_TLS_GD | |
2064 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2065 | } |
2066 | ||
2067 | static inline bfd_boolean | |
2068 | tls_ldm_reloc_p (unsigned int r_type) | |
2069 | { | |
d0f13682 CLT |
2070 | return (r_type == R_MIPS_TLS_LDM |
2071 | || r_type == R_MIPS16_TLS_LDM | |
2072 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2073 | } |
2074 | ||
2075 | static inline bfd_boolean | |
2076 | tls_gottprel_reloc_p (unsigned int r_type) | |
2077 | { | |
d0f13682 CLT |
2078 | return (r_type == R_MIPS_TLS_GOTTPREL |
2079 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2080 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2081 | } |
2082 | ||
d6f16593 | 2083 | void |
df58fc94 RS |
2084 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
2085 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2086 | { |
df58fc94 | 2087 | bfd_vma first, second, val; |
d6f16593 | 2088 | |
df58fc94 | 2089 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2090 | return; |
2091 | ||
df58fc94 RS |
2092 | /* Pick up the first and second halfwords of the instruction. */ |
2093 | first = bfd_get_16 (abfd, data); | |
2094 | second = bfd_get_16 (abfd, data + 2); | |
2095 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2096 | val = first << 16 | second; | |
2097 | else if (r_type != R_MIPS16_26) | |
2098 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2099 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2100 | else |
df58fc94 RS |
2101 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2102 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2103 | bfd_put_32 (abfd, val, data); |
2104 | } | |
2105 | ||
2106 | void | |
df58fc94 RS |
2107 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
2108 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2109 | { |
df58fc94 | 2110 | bfd_vma first, second, val; |
d6f16593 | 2111 | |
df58fc94 | 2112 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2113 | return; |
2114 | ||
2115 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2116 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2117 | { |
df58fc94 RS |
2118 | second = val & 0xffff; |
2119 | first = val >> 16; | |
2120 | } | |
2121 | else if (r_type != R_MIPS16_26) | |
2122 | { | |
2123 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2124 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2125 | } |
2126 | else | |
2127 | { | |
df58fc94 RS |
2128 | second = val & 0xffff; |
2129 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2130 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2131 | } |
df58fc94 RS |
2132 | bfd_put_16 (abfd, second, data + 2); |
2133 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2134 | } |
2135 | ||
b49e97c9 | 2136 | bfd_reloc_status_type |
9719ad41 RS |
2137 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2138 | arelent *reloc_entry, asection *input_section, | |
2139 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
2140 | { |
2141 | bfd_vma relocation; | |
a7ebbfdf | 2142 | bfd_signed_vma val; |
30ac9238 | 2143 | bfd_reloc_status_type status; |
b49e97c9 TS |
2144 | |
2145 | if (bfd_is_com_section (symbol->section)) | |
2146 | relocation = 0; | |
2147 | else | |
2148 | relocation = symbol->value; | |
2149 | ||
2150 | relocation += symbol->section->output_section->vma; | |
2151 | relocation += symbol->section->output_offset; | |
2152 | ||
07515404 | 2153 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
2154 | return bfd_reloc_outofrange; |
2155 | ||
b49e97c9 | 2156 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2157 | val = reloc_entry->addend; |
2158 | ||
30ac9238 | 2159 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2160 | |
b49e97c9 | 2161 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2162 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2163 | an external symbol. */ |
1049f94e | 2164 | if (! relocatable |
b49e97c9 TS |
2165 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2166 | val += relocation - gp; | |
2167 | ||
a7ebbfdf TS |
2168 | if (reloc_entry->howto->partial_inplace) |
2169 | { | |
30ac9238 RS |
2170 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2171 | (bfd_byte *) data | |
2172 | + reloc_entry->address); | |
2173 | if (status != bfd_reloc_ok) | |
2174 | return status; | |
a7ebbfdf TS |
2175 | } |
2176 | else | |
2177 | reloc_entry->addend = val; | |
b49e97c9 | 2178 | |
1049f94e | 2179 | if (relocatable) |
b49e97c9 | 2180 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2181 | |
2182 | return bfd_reloc_ok; | |
2183 | } | |
2184 | ||
2185 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2186 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2187 | that contains the relocation field and DATA points to the start of | |
2188 | INPUT_SECTION. */ | |
2189 | ||
2190 | struct mips_hi16 | |
2191 | { | |
2192 | struct mips_hi16 *next; | |
2193 | bfd_byte *data; | |
2194 | asection *input_section; | |
2195 | arelent rel; | |
2196 | }; | |
2197 | ||
2198 | /* FIXME: This should not be a static variable. */ | |
2199 | ||
2200 | static struct mips_hi16 *mips_hi16_list; | |
2201 | ||
2202 | /* A howto special_function for REL *HI16 relocations. We can only | |
2203 | calculate the correct value once we've seen the partnering | |
2204 | *LO16 relocation, so just save the information for later. | |
2205 | ||
2206 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2207 | However, as a GNU extension, we permit an arbitrary number of | |
2208 | *HI16s to be associated with a single *LO16. This significantly | |
2209 | simplies the relocation handling in gcc. */ | |
2210 | ||
2211 | bfd_reloc_status_type | |
2212 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2213 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2214 | asection *input_section, bfd *output_bfd, | |
2215 | char **error_message ATTRIBUTE_UNUSED) | |
2216 | { | |
2217 | struct mips_hi16 *n; | |
2218 | ||
07515404 | 2219 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2220 | return bfd_reloc_outofrange; |
2221 | ||
2222 | n = bfd_malloc (sizeof *n); | |
2223 | if (n == NULL) | |
2224 | return bfd_reloc_outofrange; | |
2225 | ||
2226 | n->next = mips_hi16_list; | |
2227 | n->data = data; | |
2228 | n->input_section = input_section; | |
2229 | n->rel = *reloc_entry; | |
2230 | mips_hi16_list = n; | |
2231 | ||
2232 | if (output_bfd != NULL) | |
2233 | reloc_entry->address += input_section->output_offset; | |
2234 | ||
2235 | return bfd_reloc_ok; | |
2236 | } | |
2237 | ||
738e5348 | 2238 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2239 | like any other 16-bit relocation when applied to global symbols, but is |
2240 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2241 | ||
2242 | bfd_reloc_status_type | |
2243 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2244 | void *data, asection *input_section, | |
2245 | bfd *output_bfd, char **error_message) | |
2246 | { | |
2247 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2248 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2249 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2250 | /* The relocation is against a global symbol. */ | |
2251 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2252 | input_section, output_bfd, | |
2253 | error_message); | |
2254 | ||
2255 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2256 | input_section, output_bfd, error_message); | |
2257 | } | |
2258 | ||
2259 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2260 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2261 | any partnering high-part relocations as well. */ | |
2262 | ||
2263 | bfd_reloc_status_type | |
2264 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2265 | void *data, asection *input_section, | |
2266 | bfd *output_bfd, char **error_message) | |
2267 | { | |
2268 | bfd_vma vallo; | |
d6f16593 | 2269 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2270 | |
07515404 | 2271 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2272 | return bfd_reloc_outofrange; |
2273 | ||
df58fc94 | 2274 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
d6f16593 | 2275 | location); |
df58fc94 RS |
2276 | vallo = bfd_get_32 (abfd, location); |
2277 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2278 | location); | |
d6f16593 | 2279 | |
30ac9238 RS |
2280 | while (mips_hi16_list != NULL) |
2281 | { | |
2282 | bfd_reloc_status_type ret; | |
2283 | struct mips_hi16 *hi; | |
2284 | ||
2285 | hi = mips_hi16_list; | |
2286 | ||
738e5348 RS |
2287 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2288 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2289 | relocation (with a rightshift of 16). However, since GOT16 |
2290 | relocations can also be used with global symbols, their howto | |
2291 | has a rightshift of 0. */ | |
2292 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2293 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2294 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2295 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
df58fc94 RS |
2296 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
2297 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, FALSE); | |
30ac9238 RS |
2298 | |
2299 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2300 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2301 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2302 | ||
30ac9238 RS |
2303 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2304 | hi->input_section, output_bfd, | |
2305 | error_message); | |
2306 | if (ret != bfd_reloc_ok) | |
2307 | return ret; | |
2308 | ||
2309 | mips_hi16_list = hi->next; | |
2310 | free (hi); | |
2311 | } | |
2312 | ||
2313 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2314 | input_section, output_bfd, | |
2315 | error_message); | |
2316 | } | |
2317 | ||
2318 | /* A generic howto special_function. This calculates and installs the | |
2319 | relocation itself, thus avoiding the oft-discussed problems in | |
2320 | bfd_perform_relocation and bfd_install_relocation. */ | |
2321 | ||
2322 | bfd_reloc_status_type | |
2323 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2324 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2325 | asection *input_section, bfd *output_bfd, | |
2326 | char **error_message ATTRIBUTE_UNUSED) | |
2327 | { | |
2328 | bfd_signed_vma val; | |
2329 | bfd_reloc_status_type status; | |
2330 | bfd_boolean relocatable; | |
2331 | ||
2332 | relocatable = (output_bfd != NULL); | |
2333 | ||
07515404 | 2334 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2335 | return bfd_reloc_outofrange; |
2336 | ||
2337 | /* Build up the field adjustment in VAL. */ | |
2338 | val = 0; | |
2339 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2340 | { | |
2341 | /* Either we're calculating the final field value or we have a | |
2342 | relocation against a section symbol. Add in the section's | |
2343 | offset or address. */ | |
2344 | val += symbol->section->output_section->vma; | |
2345 | val += symbol->section->output_offset; | |
2346 | } | |
2347 | ||
2348 | if (!relocatable) | |
2349 | { | |
2350 | /* We're calculating the final field value. Add in the symbol's value | |
2351 | and, if pc-relative, subtract the address of the field itself. */ | |
2352 | val += symbol->value; | |
2353 | if (reloc_entry->howto->pc_relative) | |
2354 | { | |
2355 | val -= input_section->output_section->vma; | |
2356 | val -= input_section->output_offset; | |
2357 | val -= reloc_entry->address; | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2362 | in the output file, and if the relocation uses a separate addend, | |
2363 | we just need to add VAL to that addend. Otherwise we need to add | |
2364 | VAL to the relocation field itself. */ | |
2365 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2366 | reloc_entry->addend += val; | |
2367 | else | |
2368 | { | |
d6f16593 MR |
2369 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2370 | ||
30ac9238 RS |
2371 | /* Add in the separate addend, if any. */ |
2372 | val += reloc_entry->addend; | |
2373 | ||
2374 | /* Add VAL to the relocation field. */ | |
df58fc94 RS |
2375 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2376 | location); | |
30ac9238 | 2377 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2378 | location); |
df58fc94 RS |
2379 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, |
2380 | location); | |
d6f16593 | 2381 | |
30ac9238 RS |
2382 | if (status != bfd_reloc_ok) |
2383 | return status; | |
2384 | } | |
2385 | ||
2386 | if (relocatable) | |
2387 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2388 | |
2389 | return bfd_reloc_ok; | |
2390 | } | |
2391 | \f | |
2392 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2393 | on the equivalence of the two elements of the union. */ | |
2394 | ||
2395 | static void | |
9719ad41 RS |
2396 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2397 | Elf32_gptab *in) | |
b49e97c9 TS |
2398 | { |
2399 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2400 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2401 | } | |
2402 | ||
2403 | static void | |
9719ad41 RS |
2404 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2405 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2406 | { |
2407 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2408 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2409 | } | |
2410 | ||
2411 | static void | |
9719ad41 RS |
2412 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2413 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2414 | { |
2415 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2416 | H_PUT_32 (abfd, in->num, ex->num); | |
2417 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2418 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2419 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2420 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2421 | } | |
2422 | ||
2423 | static void | |
9719ad41 RS |
2424 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2425 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2426 | { |
2427 | unsigned long l; | |
2428 | ||
2429 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2430 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2431 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2432 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2433 | H_PUT_32 (abfd, l, ex->info); | |
2434 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2435 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2436 | } | |
b49e97c9 TS |
2437 | \f |
2438 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2439 | routines swap this structure in and out. They are used outside of | |
2440 | BFD, so they are globally visible. */ | |
2441 | ||
2442 | void | |
9719ad41 RS |
2443 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2444 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2445 | { |
2446 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2447 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2448 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2449 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2450 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2451 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2452 | } | |
2453 | ||
2454 | void | |
9719ad41 RS |
2455 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2456 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2457 | { |
2458 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2459 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2460 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2461 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2462 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2463 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2464 | } | |
2465 | ||
2466 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2467 | information in an Elf64_Reginfo structure. These routines swap | |
2468 | them in and out. They are globally visible because they are used | |
2469 | outside of BFD. These routines are here so that gas can call them | |
2470 | without worrying about whether the 64 bit ABI has been included. */ | |
2471 | ||
2472 | void | |
9719ad41 RS |
2473 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2474 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2475 | { |
2476 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2477 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2478 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2479 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2480 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2481 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2482 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2483 | } | |
2484 | ||
2485 | void | |
9719ad41 RS |
2486 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2487 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2488 | { |
2489 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2490 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2491 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2492 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2493 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2494 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2495 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2496 | } | |
2497 | ||
2498 | /* Swap in an options header. */ | |
2499 | ||
2500 | void | |
9719ad41 RS |
2501 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2502 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2503 | { |
2504 | in->kind = H_GET_8 (abfd, ex->kind); | |
2505 | in->size = H_GET_8 (abfd, ex->size); | |
2506 | in->section = H_GET_16 (abfd, ex->section); | |
2507 | in->info = H_GET_32 (abfd, ex->info); | |
2508 | } | |
2509 | ||
2510 | /* Swap out an options header. */ | |
2511 | ||
2512 | void | |
9719ad41 RS |
2513 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2514 | Elf_External_Options *ex) | |
b49e97c9 TS |
2515 | { |
2516 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2517 | H_PUT_8 (abfd, in->size, ex->size); | |
2518 | H_PUT_16 (abfd, in->section, ex->section); | |
2519 | H_PUT_32 (abfd, in->info, ex->info); | |
2520 | } | |
2521 | \f | |
2522 | /* This function is called via qsort() to sort the dynamic relocation | |
2523 | entries by increasing r_symndx value. */ | |
2524 | ||
2525 | static int | |
9719ad41 | 2526 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2527 | { |
947216bf AM |
2528 | Elf_Internal_Rela int_reloc1; |
2529 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2530 | int diff; |
b49e97c9 | 2531 | |
947216bf AM |
2532 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2533 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2534 | |
6870500c RS |
2535 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2536 | if (diff != 0) | |
2537 | return diff; | |
2538 | ||
2539 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2540 | return -1; | |
2541 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2542 | return 1; | |
2543 | return 0; | |
b49e97c9 TS |
2544 | } |
2545 | ||
f4416af6 AO |
2546 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2547 | ||
2548 | static int | |
7e3102a7 AM |
2549 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2550 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2551 | { |
7e3102a7 | 2552 | #ifdef BFD64 |
f4416af6 AO |
2553 | Elf_Internal_Rela int_reloc1[3]; |
2554 | Elf_Internal_Rela int_reloc2[3]; | |
2555 | ||
2556 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2557 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2558 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2559 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2560 | ||
6870500c RS |
2561 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2562 | return -1; | |
2563 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2564 | return 1; | |
2565 | ||
2566 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2567 | return -1; | |
2568 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2569 | return 1; | |
2570 | return 0; | |
7e3102a7 AM |
2571 | #else |
2572 | abort (); | |
2573 | #endif | |
f4416af6 AO |
2574 | } |
2575 | ||
2576 | ||
b49e97c9 TS |
2577 | /* This routine is used to write out ECOFF debugging external symbol |
2578 | information. It is called via mips_elf_link_hash_traverse. The | |
2579 | ECOFF external symbol information must match the ELF external | |
2580 | symbol information. Unfortunately, at this point we don't know | |
2581 | whether a symbol is required by reloc information, so the two | |
2582 | tables may wind up being different. We must sort out the external | |
2583 | symbol information before we can set the final size of the .mdebug | |
2584 | section, and we must set the size of the .mdebug section before we | |
2585 | can relocate any sections, and we can't know which symbols are | |
2586 | required by relocation until we relocate the sections. | |
2587 | Fortunately, it is relatively unlikely that any symbol will be | |
2588 | stripped but required by a reloc. In particular, it can not happen | |
2589 | when generating a final executable. */ | |
2590 | ||
b34976b6 | 2591 | static bfd_boolean |
9719ad41 | 2592 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2593 | { |
9719ad41 | 2594 | struct extsym_info *einfo = data; |
b34976b6 | 2595 | bfd_boolean strip; |
b49e97c9 TS |
2596 | asection *sec, *output_section; |
2597 | ||
b49e97c9 | 2598 | if (h->root.indx == -2) |
b34976b6 | 2599 | strip = FALSE; |
f5385ebf | 2600 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2601 | || h->root.ref_dynamic |
2602 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2603 | && !h->root.def_regular |
2604 | && !h->root.ref_regular) | |
b34976b6 | 2605 | strip = TRUE; |
b49e97c9 TS |
2606 | else if (einfo->info->strip == strip_all |
2607 | || (einfo->info->strip == strip_some | |
2608 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2609 | h->root.root.root.string, | |
b34976b6 AM |
2610 | FALSE, FALSE) == NULL)) |
2611 | strip = TRUE; | |
b49e97c9 | 2612 | else |
b34976b6 | 2613 | strip = FALSE; |
b49e97c9 TS |
2614 | |
2615 | if (strip) | |
b34976b6 | 2616 | return TRUE; |
b49e97c9 TS |
2617 | |
2618 | if (h->esym.ifd == -2) | |
2619 | { | |
2620 | h->esym.jmptbl = 0; | |
2621 | h->esym.cobol_main = 0; | |
2622 | h->esym.weakext = 0; | |
2623 | h->esym.reserved = 0; | |
2624 | h->esym.ifd = ifdNil; | |
2625 | h->esym.asym.value = 0; | |
2626 | h->esym.asym.st = stGlobal; | |
2627 | ||
2628 | if (h->root.root.type == bfd_link_hash_undefined | |
2629 | || h->root.root.type == bfd_link_hash_undefweak) | |
2630 | { | |
2631 | const char *name; | |
2632 | ||
2633 | /* Use undefined class. Also, set class and type for some | |
2634 | special symbols. */ | |
2635 | name = h->root.root.root.string; | |
2636 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2637 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2638 | { | |
2639 | h->esym.asym.sc = scData; | |
2640 | h->esym.asym.st = stLabel; | |
2641 | h->esym.asym.value = 0; | |
2642 | } | |
2643 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2644 | { | |
2645 | h->esym.asym.sc = scAbs; | |
2646 | h->esym.asym.st = stLabel; | |
2647 | h->esym.asym.value = | |
2648 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2649 | } | |
4a14403c | 2650 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
2651 | { |
2652 | h->esym.asym.sc = scAbs; | |
2653 | h->esym.asym.st = stLabel; | |
2654 | h->esym.asym.value = elf_gp (einfo->abfd); | |
2655 | } | |
2656 | else | |
2657 | h->esym.asym.sc = scUndefined; | |
2658 | } | |
2659 | else if (h->root.root.type != bfd_link_hash_defined | |
2660 | && h->root.root.type != bfd_link_hash_defweak) | |
2661 | h->esym.asym.sc = scAbs; | |
2662 | else | |
2663 | { | |
2664 | const char *name; | |
2665 | ||
2666 | sec = h->root.root.u.def.section; | |
2667 | output_section = sec->output_section; | |
2668 | ||
2669 | /* When making a shared library and symbol h is the one from | |
2670 | the another shared library, OUTPUT_SECTION may be null. */ | |
2671 | if (output_section == NULL) | |
2672 | h->esym.asym.sc = scUndefined; | |
2673 | else | |
2674 | { | |
2675 | name = bfd_section_name (output_section->owner, output_section); | |
2676 | ||
2677 | if (strcmp (name, ".text") == 0) | |
2678 | h->esym.asym.sc = scText; | |
2679 | else if (strcmp (name, ".data") == 0) | |
2680 | h->esym.asym.sc = scData; | |
2681 | else if (strcmp (name, ".sdata") == 0) | |
2682 | h->esym.asym.sc = scSData; | |
2683 | else if (strcmp (name, ".rodata") == 0 | |
2684 | || strcmp (name, ".rdata") == 0) | |
2685 | h->esym.asym.sc = scRData; | |
2686 | else if (strcmp (name, ".bss") == 0) | |
2687 | h->esym.asym.sc = scBss; | |
2688 | else if (strcmp (name, ".sbss") == 0) | |
2689 | h->esym.asym.sc = scSBss; | |
2690 | else if (strcmp (name, ".init") == 0) | |
2691 | h->esym.asym.sc = scInit; | |
2692 | else if (strcmp (name, ".fini") == 0) | |
2693 | h->esym.asym.sc = scFini; | |
2694 | else | |
2695 | h->esym.asym.sc = scAbs; | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | h->esym.asym.reserved = 0; | |
2700 | h->esym.asym.index = indexNil; | |
2701 | } | |
2702 | ||
2703 | if (h->root.root.type == bfd_link_hash_common) | |
2704 | h->esym.asym.value = h->root.root.u.c.size; | |
2705 | else if (h->root.root.type == bfd_link_hash_defined | |
2706 | || h->root.root.type == bfd_link_hash_defweak) | |
2707 | { | |
2708 | if (h->esym.asym.sc == scCommon) | |
2709 | h->esym.asym.sc = scBss; | |
2710 | else if (h->esym.asym.sc == scSCommon) | |
2711 | h->esym.asym.sc = scSBss; | |
2712 | ||
2713 | sec = h->root.root.u.def.section; | |
2714 | output_section = sec->output_section; | |
2715 | if (output_section != NULL) | |
2716 | h->esym.asym.value = (h->root.root.u.def.value | |
2717 | + sec->output_offset | |
2718 | + output_section->vma); | |
2719 | else | |
2720 | h->esym.asym.value = 0; | |
2721 | } | |
33bb52fb | 2722 | else |
b49e97c9 TS |
2723 | { |
2724 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2725 | |
2726 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2727 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2728 | |
33bb52fb | 2729 | if (hd->needs_lazy_stub) |
b49e97c9 TS |
2730 | { |
2731 | /* Set type and value for a symbol with a function stub. */ | |
2732 | h->esym.asym.st = stProc; | |
2733 | sec = hd->root.root.u.def.section; | |
2734 | if (sec == NULL) | |
2735 | h->esym.asym.value = 0; | |
2736 | else | |
2737 | { | |
2738 | output_section = sec->output_section; | |
2739 | if (output_section != NULL) | |
2740 | h->esym.asym.value = (hd->root.plt.offset | |
2741 | + sec->output_offset | |
2742 | + output_section->vma); | |
2743 | else | |
2744 | h->esym.asym.value = 0; | |
2745 | } | |
b49e97c9 TS |
2746 | } |
2747 | } | |
2748 | ||
2749 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2750 | h->root.root.root.string, | |
2751 | &h->esym)) | |
2752 | { | |
b34976b6 AM |
2753 | einfo->failed = TRUE; |
2754 | return FALSE; | |
b49e97c9 TS |
2755 | } |
2756 | ||
b34976b6 | 2757 | return TRUE; |
b49e97c9 TS |
2758 | } |
2759 | ||
2760 | /* A comparison routine used to sort .gptab entries. */ | |
2761 | ||
2762 | static int | |
9719ad41 | 2763 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2764 | { |
9719ad41 RS |
2765 | const Elf32_gptab *a1 = p1; |
2766 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2767 | |
2768 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2769 | } | |
2770 | \f | |
b15e6682 | 2771 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2772 | |
2773 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2774 | hash number. */ | |
2775 | ||
2776 | static INLINE hashval_t | |
9719ad41 | 2777 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2778 | { |
2779 | #ifdef BFD64 | |
2780 | return addr + (addr >> 32); | |
2781 | #else | |
2782 | return addr; | |
2783 | #endif | |
2784 | } | |
2785 | ||
f4416af6 | 2786 | static hashval_t |
d9bf376d | 2787 | mips_elf_got_entry_hash (const void *entry_) |
f4416af6 AO |
2788 | { |
2789 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2790 | ||
e641e783 | 2791 | return (entry->symndx |
9ab066b4 RS |
2792 | + ((entry->tls_type == GOT_TLS_LDM) << 18) |
2793 | + (entry->tls_type == GOT_TLS_LDM ? 0 | |
e641e783 RS |
2794 | : !entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
2795 | : entry->symndx >= 0 ? (entry->abfd->id | |
2796 | + mips_elf_hash_bfd_vma (entry->d.addend)) | |
2797 | : entry->d.h->root.root.root.hash)); | |
f4416af6 AO |
2798 | } |
2799 | ||
2800 | static int | |
3dff0dd1 | 2801 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2802 | { |
2803 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2804 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2805 | ||
e641e783 | 2806 | return (e1->symndx == e2->symndx |
9ab066b4 RS |
2807 | && e1->tls_type == e2->tls_type |
2808 | && (e1->tls_type == GOT_TLS_LDM ? TRUE | |
e641e783 RS |
2809 | : !e1->abfd ? !e2->abfd && e1->d.address == e2->d.address |
2810 | : e1->symndx >= 0 ? (e1->abfd == e2->abfd | |
2811 | && e1->d.addend == e2->d.addend) | |
2812 | : e2->abfd && e1->d.h == e2->d.h)); | |
b15e6682 | 2813 | } |
c224138d | 2814 | |
13db6b44 RS |
2815 | static hashval_t |
2816 | mips_got_page_ref_hash (const void *ref_) | |
2817 | { | |
2818 | const struct mips_got_page_ref *ref; | |
2819 | ||
2820 | ref = (const struct mips_got_page_ref *) ref_; | |
2821 | return ((ref->symndx >= 0 | |
2822 | ? (hashval_t) (ref->u.abfd->id + ref->symndx) | |
2823 | : ref->u.h->root.root.root.hash) | |
2824 | + mips_elf_hash_bfd_vma (ref->addend)); | |
2825 | } | |
2826 | ||
2827 | static int | |
2828 | mips_got_page_ref_eq (const void *ref1_, const void *ref2_) | |
2829 | { | |
2830 | const struct mips_got_page_ref *ref1, *ref2; | |
2831 | ||
2832 | ref1 = (const struct mips_got_page_ref *) ref1_; | |
2833 | ref2 = (const struct mips_got_page_ref *) ref2_; | |
2834 | return (ref1->symndx == ref2->symndx | |
2835 | && (ref1->symndx < 0 | |
2836 | ? ref1->u.h == ref2->u.h | |
2837 | : ref1->u.abfd == ref2->u.abfd) | |
2838 | && ref1->addend == ref2->addend); | |
2839 | } | |
2840 | ||
c224138d RS |
2841 | static hashval_t |
2842 | mips_got_page_entry_hash (const void *entry_) | |
2843 | { | |
2844 | const struct mips_got_page_entry *entry; | |
2845 | ||
2846 | entry = (const struct mips_got_page_entry *) entry_; | |
13db6b44 | 2847 | return entry->sec->id; |
c224138d RS |
2848 | } |
2849 | ||
2850 | static int | |
2851 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2852 | { | |
2853 | const struct mips_got_page_entry *entry1, *entry2; | |
2854 | ||
2855 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2856 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
13db6b44 | 2857 | return entry1->sec == entry2->sec; |
c224138d | 2858 | } |
b15e6682 | 2859 | \f |
3dff0dd1 | 2860 | /* Create and return a new mips_got_info structure. */ |
5334aa52 RS |
2861 | |
2862 | static struct mips_got_info * | |
3dff0dd1 | 2863 | mips_elf_create_got_info (bfd *abfd) |
5334aa52 RS |
2864 | { |
2865 | struct mips_got_info *g; | |
2866 | ||
2867 | g = bfd_zalloc (abfd, sizeof (struct mips_got_info)); | |
2868 | if (g == NULL) | |
2869 | return NULL; | |
2870 | ||
3dff0dd1 RS |
2871 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
2872 | mips_elf_got_entry_eq, NULL); | |
5334aa52 RS |
2873 | if (g->got_entries == NULL) |
2874 | return NULL; | |
2875 | ||
13db6b44 RS |
2876 | g->got_page_refs = htab_try_create (1, mips_got_page_ref_hash, |
2877 | mips_got_page_ref_eq, NULL); | |
2878 | if (g->got_page_refs == NULL) | |
5334aa52 RS |
2879 | return NULL; |
2880 | ||
2881 | return g; | |
2882 | } | |
2883 | ||
ee227692 RS |
2884 | /* Return the GOT info for input bfd ABFD, trying to create a new one if |
2885 | CREATE_P and if ABFD doesn't already have a GOT. */ | |
2886 | ||
2887 | static struct mips_got_info * | |
2888 | mips_elf_bfd_got (bfd *abfd, bfd_boolean create_p) | |
2889 | { | |
2890 | struct mips_elf_obj_tdata *tdata; | |
2891 | ||
2892 | if (!is_mips_elf (abfd)) | |
2893 | return NULL; | |
2894 | ||
2895 | tdata = mips_elf_tdata (abfd); | |
2896 | if (!tdata->got && create_p) | |
3dff0dd1 | 2897 | tdata->got = mips_elf_create_got_info (abfd); |
ee227692 RS |
2898 | return tdata->got; |
2899 | } | |
2900 | ||
d7206569 RS |
2901 | /* Record that ABFD should use output GOT G. */ |
2902 | ||
2903 | static void | |
2904 | mips_elf_replace_bfd_got (bfd *abfd, struct mips_got_info *g) | |
2905 | { | |
2906 | struct mips_elf_obj_tdata *tdata; | |
2907 | ||
2908 | BFD_ASSERT (is_mips_elf (abfd)); | |
2909 | tdata = mips_elf_tdata (abfd); | |
2910 | if (tdata->got) | |
2911 | { | |
2912 | /* The GOT structure itself and the hash table entries are | |
2913 | allocated to a bfd, but the hash tables aren't. */ | |
2914 | htab_delete (tdata->got->got_entries); | |
13db6b44 RS |
2915 | htab_delete (tdata->got->got_page_refs); |
2916 | if (tdata->got->got_page_entries) | |
2917 | htab_delete (tdata->got->got_page_entries); | |
d7206569 RS |
2918 | } |
2919 | tdata->got = g; | |
2920 | } | |
2921 | ||
0a44bf69 RS |
2922 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2923 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2924 | if creation fails. */ | |
f4416af6 AO |
2925 | |
2926 | static asection * | |
0a44bf69 | 2927 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2928 | { |
0a44bf69 | 2929 | const char *dname; |
f4416af6 | 2930 | asection *sreloc; |
0a44bf69 | 2931 | bfd *dynobj; |
f4416af6 | 2932 | |
0a44bf69 RS |
2933 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2934 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 2935 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
2936 | if (sreloc == NULL && create_p) |
2937 | { | |
3d4d4302 AM |
2938 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
2939 | (SEC_ALLOC | |
2940 | | SEC_LOAD | |
2941 | | SEC_HAS_CONTENTS | |
2942 | | SEC_IN_MEMORY | |
2943 | | SEC_LINKER_CREATED | |
2944 | | SEC_READONLY)); | |
f4416af6 | 2945 | if (sreloc == NULL |
f4416af6 | 2946 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2947 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2948 | return NULL; |
2949 | } | |
2950 | return sreloc; | |
2951 | } | |
2952 | ||
e641e783 RS |
2953 | /* Return the GOT_TLS_* type required by relocation type R_TYPE. */ |
2954 | ||
2955 | static int | |
2956 | mips_elf_reloc_tls_type (unsigned int r_type) | |
2957 | { | |
2958 | if (tls_gd_reloc_p (r_type)) | |
2959 | return GOT_TLS_GD; | |
2960 | ||
2961 | if (tls_ldm_reloc_p (r_type)) | |
2962 | return GOT_TLS_LDM; | |
2963 | ||
2964 | if (tls_gottprel_reloc_p (r_type)) | |
2965 | return GOT_TLS_IE; | |
2966 | ||
9ab066b4 | 2967 | return GOT_TLS_NONE; |
e641e783 RS |
2968 | } |
2969 | ||
2970 | /* Return the number of GOT slots needed for GOT TLS type TYPE. */ | |
2971 | ||
2972 | static int | |
2973 | mips_tls_got_entries (unsigned int type) | |
2974 | { | |
2975 | switch (type) | |
2976 | { | |
2977 | case GOT_TLS_GD: | |
2978 | case GOT_TLS_LDM: | |
2979 | return 2; | |
2980 | ||
2981 | case GOT_TLS_IE: | |
2982 | return 1; | |
2983 | ||
9ab066b4 | 2984 | case GOT_TLS_NONE: |
e641e783 RS |
2985 | return 0; |
2986 | } | |
2987 | abort (); | |
2988 | } | |
2989 | ||
0f20cc35 DJ |
2990 | /* Count the number of relocations needed for a TLS GOT entry, with |
2991 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2992 | is NULL). */ | |
2993 | ||
2994 | static int | |
2995 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2996 | struct elf_link_hash_entry *h) | |
2997 | { | |
2998 | int indx = 0; | |
0f20cc35 DJ |
2999 | bfd_boolean need_relocs = FALSE; |
3000 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3001 | ||
3002 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3003 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
3004 | indx = h->dynindx; | |
3005 | ||
3006 | if ((info->shared || indx != 0) | |
3007 | && (h == NULL | |
3008 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3009 | || h->root.type != bfd_link_hash_undefweak)) | |
3010 | need_relocs = TRUE; | |
3011 | ||
3012 | if (!need_relocs) | |
e641e783 | 3013 | return 0; |
0f20cc35 | 3014 | |
9ab066b4 | 3015 | switch (tls_type) |
0f20cc35 | 3016 | { |
e641e783 RS |
3017 | case GOT_TLS_GD: |
3018 | return indx != 0 ? 2 : 1; | |
0f20cc35 | 3019 | |
e641e783 RS |
3020 | case GOT_TLS_IE: |
3021 | return 1; | |
0f20cc35 | 3022 | |
e641e783 RS |
3023 | case GOT_TLS_LDM: |
3024 | return info->shared ? 1 : 0; | |
0f20cc35 | 3025 | |
e641e783 RS |
3026 | default: |
3027 | return 0; | |
3028 | } | |
0f20cc35 DJ |
3029 | } |
3030 | ||
ab361d49 RS |
3031 | /* Add the number of GOT entries and TLS relocations required by ENTRY |
3032 | to G. */ | |
0f20cc35 | 3033 | |
ab361d49 RS |
3034 | static void |
3035 | mips_elf_count_got_entry (struct bfd_link_info *info, | |
3036 | struct mips_got_info *g, | |
3037 | struct mips_got_entry *entry) | |
0f20cc35 | 3038 | { |
9ab066b4 | 3039 | if (entry->tls_type) |
ab361d49 | 3040 | { |
9ab066b4 RS |
3041 | g->tls_gotno += mips_tls_got_entries (entry->tls_type); |
3042 | g->relocs += mips_tls_got_relocs (info, entry->tls_type, | |
ab361d49 RS |
3043 | entry->symndx < 0 |
3044 | ? &entry->d.h->root : NULL); | |
3045 | } | |
3046 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) | |
3047 | g->local_gotno += 1; | |
3048 | else | |
3049 | g->global_gotno += 1; | |
0f20cc35 DJ |
3050 | } |
3051 | ||
0f20cc35 DJ |
3052 | /* Output a simple dynamic relocation into SRELOC. */ |
3053 | ||
3054 | static void | |
3055 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3056 | asection *sreloc, | |
861fb55a | 3057 | unsigned long reloc_index, |
0f20cc35 DJ |
3058 | unsigned long indx, |
3059 | int r_type, | |
3060 | bfd_vma offset) | |
3061 | { | |
3062 | Elf_Internal_Rela rel[3]; | |
3063 | ||
3064 | memset (rel, 0, sizeof (rel)); | |
3065 | ||
3066 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3067 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3068 | ||
3069 | if (ABI_64_P (output_bfd)) | |
3070 | { | |
3071 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3072 | (output_bfd, &rel[0], | |
3073 | (sreloc->contents | |
861fb55a | 3074 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3075 | } |
3076 | else | |
3077 | bfd_elf32_swap_reloc_out | |
3078 | (output_bfd, &rel[0], | |
3079 | (sreloc->contents | |
861fb55a | 3080 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3081 | } |
3082 | ||
3083 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3084 | ||
3085 | static void | |
9ab066b4 RS |
3086 | mips_elf_initialize_tls_slots (bfd *abfd, struct bfd_link_info *info, |
3087 | struct mips_got_entry *entry, | |
0f20cc35 DJ |
3088 | struct mips_elf_link_hash_entry *h, |
3089 | bfd_vma value) | |
3090 | { | |
23cc69b6 | 3091 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3092 | int indx; |
3093 | asection *sreloc, *sgot; | |
9ab066b4 | 3094 | bfd_vma got_offset, got_offset2; |
0f20cc35 DJ |
3095 | bfd_boolean need_relocs = FALSE; |
3096 | ||
23cc69b6 | 3097 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3098 | if (htab == NULL) |
3099 | return; | |
3100 | ||
23cc69b6 | 3101 | sgot = htab->sgot; |
0f20cc35 DJ |
3102 | |
3103 | indx = 0; | |
3104 | if (h != NULL) | |
3105 | { | |
3106 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3107 | ||
3108 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
3109 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3110 | indx = h->root.dynindx; | |
3111 | } | |
3112 | ||
9ab066b4 | 3113 | if (entry->tls_initialized) |
0f20cc35 DJ |
3114 | return; |
3115 | ||
3116 | if ((info->shared || indx != 0) | |
3117 | && (h == NULL | |
3118 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3119 | || h->root.type != bfd_link_hash_undefweak)) | |
3120 | need_relocs = TRUE; | |
3121 | ||
3122 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3123 | be defined at all; assume that the value doesn't matter in that | |
3124 | case. Otherwise complain if we would use the value. */ | |
3125 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3126 | || h->root.root.type == bfd_link_hash_undefweak); | |
3127 | ||
3128 | /* Emit necessary relocations. */ | |
0a44bf69 | 3129 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
9ab066b4 | 3130 | got_offset = entry->gotidx; |
0f20cc35 | 3131 | |
9ab066b4 | 3132 | switch (entry->tls_type) |
0f20cc35 | 3133 | { |
e641e783 RS |
3134 | case GOT_TLS_GD: |
3135 | /* General Dynamic. */ | |
3136 | got_offset2 = got_offset + MIPS_ELF_GOT_SIZE (abfd); | |
0f20cc35 DJ |
3137 | |
3138 | if (need_relocs) | |
3139 | { | |
3140 | mips_elf_output_dynamic_relocation | |
861fb55a | 3141 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3142 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
e641e783 | 3143 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3144 | |
3145 | if (indx) | |
3146 | mips_elf_output_dynamic_relocation | |
861fb55a | 3147 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3148 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
e641e783 | 3149 | sgot->output_offset + sgot->output_section->vma + got_offset2); |
0f20cc35 DJ |
3150 | else |
3151 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
e641e783 | 3152 | sgot->contents + got_offset2); |
0f20cc35 DJ |
3153 | } |
3154 | else | |
3155 | { | |
3156 | MIPS_ELF_PUT_WORD (abfd, 1, | |
e641e783 | 3157 | sgot->contents + got_offset); |
0f20cc35 | 3158 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), |
e641e783 | 3159 | sgot->contents + got_offset2); |
0f20cc35 | 3160 | } |
e641e783 | 3161 | break; |
0f20cc35 | 3162 | |
e641e783 RS |
3163 | case GOT_TLS_IE: |
3164 | /* Initial Exec model. */ | |
0f20cc35 DJ |
3165 | if (need_relocs) |
3166 | { | |
3167 | if (indx == 0) | |
3168 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
e641e783 | 3169 | sgot->contents + got_offset); |
0f20cc35 DJ |
3170 | else |
3171 | MIPS_ELF_PUT_WORD (abfd, 0, | |
e641e783 | 3172 | sgot->contents + got_offset); |
0f20cc35 DJ |
3173 | |
3174 | mips_elf_output_dynamic_relocation | |
861fb55a | 3175 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3176 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
e641e783 | 3177 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3178 | } |
3179 | else | |
3180 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
e641e783 RS |
3181 | sgot->contents + got_offset); |
3182 | break; | |
0f20cc35 | 3183 | |
e641e783 | 3184 | case GOT_TLS_LDM: |
0f20cc35 DJ |
3185 | /* The initial offset is zero, and the LD offsets will include the |
3186 | bias by DTP_OFFSET. */ | |
3187 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3188 | sgot->contents + got_offset | |
3189 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3190 | ||
3191 | if (!info->shared) | |
3192 | MIPS_ELF_PUT_WORD (abfd, 1, | |
3193 | sgot->contents + got_offset); | |
3194 | else | |
3195 | mips_elf_output_dynamic_relocation | |
861fb55a | 3196 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3197 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3198 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
e641e783 RS |
3199 | break; |
3200 | ||
3201 | default: | |
3202 | abort (); | |
0f20cc35 DJ |
3203 | } |
3204 | ||
9ab066b4 | 3205 | entry->tls_initialized = TRUE; |
e641e783 | 3206 | } |
0f20cc35 | 3207 | |
0a44bf69 RS |
3208 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3209 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3210 | will be negative. */ | |
3211 | ||
3212 | static bfd_vma | |
3213 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3214 | struct elf_link_hash_entry *h) | |
3215 | { | |
3216 | bfd_vma plt_index, got_address, got_value; | |
3217 | struct mips_elf_link_hash_table *htab; | |
3218 | ||
3219 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3220 | BFD_ASSERT (htab != NULL); |
3221 | ||
0a44bf69 RS |
3222 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); |
3223 | ||
861fb55a DJ |
3224 | /* This function only works for VxWorks, because a non-VxWorks .got.plt |
3225 | section starts with reserved entries. */ | |
3226 | BFD_ASSERT (htab->is_vxworks); | |
3227 | ||
0a44bf69 RS |
3228 | /* Calculate the index of the symbol's PLT entry. */ |
3229 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
3230 | ||
3231 | /* Calculate the address of the associated .got.plt entry. */ | |
3232 | got_address = (htab->sgotplt->output_section->vma | |
3233 | + htab->sgotplt->output_offset | |
3234 | + plt_index * 4); | |
3235 | ||
3236 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3237 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3238 | + htab->root.hgot->root.u.def.section->output_offset | |
3239 | + htab->root.hgot->root.u.def.value); | |
3240 | ||
3241 | return got_address - got_value; | |
3242 | } | |
3243 | ||
5c18022e | 3244 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3245 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3246 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3247 | offset can be found. */ | |
b49e97c9 TS |
3248 | |
3249 | static bfd_vma | |
9719ad41 | 3250 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3251 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3252 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3253 | { |
a8028dd0 | 3254 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3255 | struct mips_got_entry *entry; |
b49e97c9 | 3256 | |
a8028dd0 | 3257 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3258 | BFD_ASSERT (htab != NULL); |
3259 | ||
a8028dd0 RS |
3260 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3261 | r_symndx, h, r_type); | |
0f20cc35 | 3262 | if (!entry) |
b15e6682 | 3263 | return MINUS_ONE; |
0f20cc35 | 3264 | |
e641e783 | 3265 | if (entry->tls_type) |
9ab066b4 RS |
3266 | mips_elf_initialize_tls_slots (abfd, info, entry, h, value); |
3267 | return entry->gotidx; | |
b49e97c9 TS |
3268 | } |
3269 | ||
13fbec83 | 3270 | /* Return the GOT index of global symbol H in the primary GOT. */ |
b49e97c9 TS |
3271 | |
3272 | static bfd_vma | |
13fbec83 RS |
3273 | mips_elf_primary_global_got_index (bfd *obfd, struct bfd_link_info *info, |
3274 | struct elf_link_hash_entry *h) | |
3275 | { | |
3276 | struct mips_elf_link_hash_table *htab; | |
3277 | long global_got_dynindx; | |
3278 | struct mips_got_info *g; | |
3279 | bfd_vma got_index; | |
3280 | ||
3281 | htab = mips_elf_hash_table (info); | |
3282 | BFD_ASSERT (htab != NULL); | |
3283 | ||
3284 | global_got_dynindx = 0; | |
3285 | if (htab->global_gotsym != NULL) | |
3286 | global_got_dynindx = htab->global_gotsym->dynindx; | |
3287 | ||
3288 | /* Once we determine the global GOT entry with the lowest dynamic | |
3289 | symbol table index, we must put all dynamic symbols with greater | |
3290 | indices into the primary GOT. That makes it easy to calculate the | |
3291 | GOT offset. */ | |
3292 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
3293 | g = mips_elf_bfd_got (obfd, FALSE); | |
3294 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) | |
3295 | * MIPS_ELF_GOT_SIZE (obfd)); | |
3296 | BFD_ASSERT (got_index < htab->sgot->size); | |
3297 | ||
3298 | return got_index; | |
3299 | } | |
3300 | ||
3301 | /* Return the GOT index for the global symbol indicated by H, which is | |
3302 | referenced by a relocation of type R_TYPE in IBFD. */ | |
3303 | ||
3304 | static bfd_vma | |
3305 | mips_elf_global_got_index (bfd *obfd, struct bfd_link_info *info, bfd *ibfd, | |
3306 | struct elf_link_hash_entry *h, int r_type) | |
b49e97c9 | 3307 | { |
a8028dd0 | 3308 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 RS |
3309 | struct mips_got_info *g; |
3310 | struct mips_got_entry lookup, *entry; | |
3311 | bfd_vma gotidx; | |
b49e97c9 | 3312 | |
a8028dd0 | 3313 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3314 | BFD_ASSERT (htab != NULL); |
3315 | ||
6c42ddb9 RS |
3316 | g = mips_elf_bfd_got (ibfd, FALSE); |
3317 | BFD_ASSERT (g); | |
f4416af6 | 3318 | |
6c42ddb9 RS |
3319 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3320 | if (!lookup.tls_type && g == mips_elf_bfd_got (obfd, FALSE)) | |
3321 | return mips_elf_primary_global_got_index (obfd, info, h); | |
f4416af6 | 3322 | |
6c42ddb9 RS |
3323 | lookup.abfd = ibfd; |
3324 | lookup.symndx = -1; | |
3325 | lookup.d.h = (struct mips_elf_link_hash_entry *) h; | |
3326 | entry = htab_find (g->got_entries, &lookup); | |
3327 | BFD_ASSERT (entry); | |
0f20cc35 | 3328 | |
6c42ddb9 RS |
3329 | gotidx = entry->gotidx; |
3330 | BFD_ASSERT (gotidx > 0 && gotidx < htab->sgot->size); | |
f4416af6 | 3331 | |
6c42ddb9 | 3332 | if (lookup.tls_type) |
0f20cc35 | 3333 | { |
0f20cc35 DJ |
3334 | bfd_vma value = MINUS_ONE; |
3335 | ||
3336 | if ((h->root.type == bfd_link_hash_defined | |
3337 | || h->root.type == bfd_link_hash_defweak) | |
3338 | && h->root.u.def.section->output_section) | |
3339 | value = (h->root.u.def.value | |
3340 | + h->root.u.def.section->output_offset | |
3341 | + h->root.u.def.section->output_section->vma); | |
3342 | ||
9ab066b4 | 3343 | mips_elf_initialize_tls_slots (obfd, info, entry, lookup.d.h, value); |
0f20cc35 | 3344 | } |
6c42ddb9 | 3345 | return gotidx; |
b49e97c9 TS |
3346 | } |
3347 | ||
5c18022e RS |
3348 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3349 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3350 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3351 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3352 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3353 | |
3354 | static bfd_vma | |
9719ad41 | 3355 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3356 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3357 | { |
91d6fa6a | 3358 | bfd_vma page, got_index; |
b15e6682 | 3359 | struct mips_got_entry *entry; |
b49e97c9 | 3360 | |
0a44bf69 | 3361 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3362 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3363 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3364 | |
b15e6682 AO |
3365 | if (!entry) |
3366 | return MINUS_ONE; | |
143d77c5 | 3367 | |
91d6fa6a | 3368 | got_index = entry->gotidx; |
b49e97c9 TS |
3369 | |
3370 | if (offsetp) | |
f4416af6 | 3371 | *offsetp = value - entry->d.address; |
b49e97c9 | 3372 | |
91d6fa6a | 3373 | return got_index; |
b49e97c9 TS |
3374 | } |
3375 | ||
738e5348 | 3376 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3377 | EXTERNAL is true if the relocation was originally against a global |
3378 | symbol that binds locally. */ | |
b49e97c9 TS |
3379 | |
3380 | static bfd_vma | |
9719ad41 | 3381 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3382 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3383 | { |
b15e6682 | 3384 | struct mips_got_entry *entry; |
b49e97c9 | 3385 | |
0a44bf69 RS |
3386 | /* GOT16 relocations against local symbols are followed by a LO16 |
3387 | relocation; those against global symbols are not. Thus if the | |
3388 | symbol was originally local, the GOT16 relocation should load the | |
3389 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3390 | if (! external) |
0a44bf69 | 3391 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3392 | |
738e5348 RS |
3393 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3394 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3395 | same in all cases. */ | |
a8028dd0 RS |
3396 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3397 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3398 | if (entry) |
3399 | return entry->gotidx; | |
3400 | else | |
3401 | return MINUS_ONE; | |
b49e97c9 TS |
3402 | } |
3403 | ||
3404 | /* Returns the offset for the entry at the INDEXth position | |
3405 | in the GOT. */ | |
3406 | ||
3407 | static bfd_vma | |
a8028dd0 | 3408 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3409 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3410 | { |
a8028dd0 | 3411 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3412 | asection *sgot; |
3413 | bfd_vma gp; | |
3414 | ||
a8028dd0 | 3415 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3416 | BFD_ASSERT (htab != NULL); |
3417 | ||
a8028dd0 | 3418 | sgot = htab->sgot; |
f4416af6 | 3419 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3420 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3421 | |
91d6fa6a | 3422 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3423 | } |
3424 | ||
0a44bf69 RS |
3425 | /* Create and return a local GOT entry for VALUE, which was calculated |
3426 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3427 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3428 | instead. */ | |
b49e97c9 | 3429 | |
b15e6682 | 3430 | static struct mips_got_entry * |
0a44bf69 | 3431 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3432 | bfd *ibfd, bfd_vma value, |
5c18022e | 3433 | unsigned long r_symndx, |
0f20cc35 DJ |
3434 | struct mips_elf_link_hash_entry *h, |
3435 | int r_type) | |
b49e97c9 | 3436 | { |
ebc53538 RS |
3437 | struct mips_got_entry lookup, *entry; |
3438 | void **loc; | |
f4416af6 | 3439 | struct mips_got_info *g; |
0a44bf69 | 3440 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 | 3441 | bfd_vma gotidx; |
0a44bf69 RS |
3442 | |
3443 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3444 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3445 | |
d7206569 | 3446 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
3447 | if (g == NULL) |
3448 | { | |
d7206569 | 3449 | g = mips_elf_bfd_got (abfd, FALSE); |
f4416af6 AO |
3450 | BFD_ASSERT (g != NULL); |
3451 | } | |
b15e6682 | 3452 | |
020d7251 RS |
3453 | /* This function shouldn't be called for symbols that live in the global |
3454 | area of the GOT. */ | |
3455 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 | 3456 | |
ebc53538 RS |
3457 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3458 | if (lookup.tls_type) | |
3459 | { | |
3460 | lookup.abfd = ibfd; | |
df58fc94 | 3461 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 3462 | { |
ebc53538 RS |
3463 | lookup.symndx = 0; |
3464 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3465 | } |
3466 | else if (h == NULL) | |
3467 | { | |
ebc53538 RS |
3468 | lookup.symndx = r_symndx; |
3469 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3470 | } |
3471 | else | |
ebc53538 RS |
3472 | { |
3473 | lookup.symndx = -1; | |
3474 | lookup.d.h = h; | |
3475 | } | |
0f20cc35 | 3476 | |
ebc53538 RS |
3477 | entry = (struct mips_got_entry *) htab_find (g->got_entries, &lookup); |
3478 | BFD_ASSERT (entry); | |
0f20cc35 | 3479 | |
6c42ddb9 RS |
3480 | gotidx = entry->gotidx; |
3481 | BFD_ASSERT (gotidx > 0 && gotidx < htab->sgot->size); | |
3482 | ||
ebc53538 | 3483 | return entry; |
0f20cc35 DJ |
3484 | } |
3485 | ||
ebc53538 RS |
3486 | lookup.abfd = NULL; |
3487 | lookup.symndx = -1; | |
3488 | lookup.d.address = value; | |
3489 | loc = htab_find_slot (g->got_entries, &lookup, INSERT); | |
3490 | if (!loc) | |
b15e6682 | 3491 | return NULL; |
143d77c5 | 3492 | |
ebc53538 RS |
3493 | entry = (struct mips_got_entry *) *loc; |
3494 | if (entry) | |
3495 | return entry; | |
b15e6682 | 3496 | |
ebc53538 | 3497 | if (g->assigned_gotno >= g->local_gotno) |
b49e97c9 TS |
3498 | { |
3499 | /* We didn't allocate enough space in the GOT. */ | |
3500 | (*_bfd_error_handler) | |
3501 | (_("not enough GOT space for local GOT entries")); | |
3502 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3503 | return NULL; |
b49e97c9 TS |
3504 | } |
3505 | ||
ebc53538 RS |
3506 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); |
3507 | if (!entry) | |
3508 | return NULL; | |
3509 | ||
3510 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; | |
3511 | *entry = lookup; | |
3512 | *loc = entry; | |
3513 | ||
3514 | MIPS_ELF_PUT_WORD (abfd, value, htab->sgot->contents + entry->gotidx); | |
b15e6682 | 3515 | |
5c18022e | 3516 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3517 | if (htab->is_vxworks) |
3518 | { | |
3519 | Elf_Internal_Rela outrel; | |
5c18022e | 3520 | asection *s; |
91d6fa6a | 3521 | bfd_byte *rloc; |
0a44bf69 | 3522 | bfd_vma got_address; |
0a44bf69 RS |
3523 | |
3524 | s = mips_elf_rel_dyn_section (info, FALSE); | |
a8028dd0 RS |
3525 | got_address = (htab->sgot->output_section->vma |
3526 | + htab->sgot->output_offset | |
ebc53538 | 3527 | + entry->gotidx); |
0a44bf69 | 3528 | |
91d6fa6a | 3529 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3530 | outrel.r_offset = got_address; |
5c18022e RS |
3531 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3532 | outrel.r_addend = value; | |
91d6fa6a | 3533 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3534 | } |
3535 | ||
ebc53538 | 3536 | return entry; |
b49e97c9 TS |
3537 | } |
3538 | ||
d4596a51 RS |
3539 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3540 | The number might be exact or a worst-case estimate, depending on how | |
3541 | much information is available to elf_backend_omit_section_dynsym at | |
3542 | the current linking stage. */ | |
3543 | ||
3544 | static bfd_size_type | |
3545 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3546 | { | |
3547 | bfd_size_type count; | |
3548 | ||
3549 | count = 0; | |
3550 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
3551 | { | |
3552 | asection *p; | |
3553 | const struct elf_backend_data *bed; | |
3554 | ||
3555 | bed = get_elf_backend_data (output_bfd); | |
3556 | for (p = output_bfd->sections; p ; p = p->next) | |
3557 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3558 | && (p->flags & SEC_ALLOC) != 0 | |
3559 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
3560 | ++count; | |
3561 | } | |
3562 | return count; | |
3563 | } | |
3564 | ||
b49e97c9 | 3565 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3566 | appear towards the end. */ |
b49e97c9 | 3567 | |
b34976b6 | 3568 | static bfd_boolean |
d4596a51 | 3569 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3570 | { |
a8028dd0 | 3571 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3572 | struct mips_elf_hash_sort_data hsd; |
3573 | struct mips_got_info *g; | |
b49e97c9 | 3574 | |
d4596a51 RS |
3575 | if (elf_hash_table (info)->dynsymcount == 0) |
3576 | return TRUE; | |
3577 | ||
a8028dd0 | 3578 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3579 | BFD_ASSERT (htab != NULL); |
3580 | ||
a8028dd0 | 3581 | g = htab->got_info; |
d4596a51 RS |
3582 | if (g == NULL) |
3583 | return TRUE; | |
f4416af6 | 3584 | |
b49e97c9 | 3585 | hsd.low = NULL; |
23cc69b6 RS |
3586 | hsd.max_unref_got_dynindx |
3587 | = hsd.min_got_dynindx | |
3588 | = (elf_hash_table (info)->dynsymcount - g->reloc_only_gotno); | |
d4596a51 | 3589 | hsd.max_non_got_dynindx = count_section_dynsyms (abfd, info) + 1; |
b49e97c9 TS |
3590 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
3591 | elf_hash_table (info)), | |
3592 | mips_elf_sort_hash_table_f, | |
3593 | &hsd); | |
3594 | ||
3595 | /* There should have been enough room in the symbol table to | |
44c410de | 3596 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 3597 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
d4596a51 RS |
3598 | BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx |
3599 | == elf_hash_table (info)->dynsymcount); | |
3600 | BFD_ASSERT (elf_hash_table (info)->dynsymcount - hsd.min_got_dynindx | |
3601 | == g->global_gotno); | |
b49e97c9 TS |
3602 | |
3603 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3604 | table index in the GOT. */ | |
d222d210 | 3605 | htab->global_gotsym = hsd.low; |
b49e97c9 | 3606 | |
b34976b6 | 3607 | return TRUE; |
b49e97c9 TS |
3608 | } |
3609 | ||
3610 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3611 | index. Otherwise, assign it the lowest available dynamic | |
3612 | index. */ | |
3613 | ||
b34976b6 | 3614 | static bfd_boolean |
9719ad41 | 3615 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3616 | { |
9719ad41 | 3617 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3618 | |
b49e97c9 TS |
3619 | /* Symbols without dynamic symbol table entries aren't interesting |
3620 | at all. */ | |
3621 | if (h->root.dynindx == -1) | |
b34976b6 | 3622 | return TRUE; |
b49e97c9 | 3623 | |
634835ae | 3624 | switch (h->global_got_area) |
f4416af6 | 3625 | { |
634835ae RS |
3626 | case GGA_NONE: |
3627 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
3628 | break; | |
0f20cc35 | 3629 | |
634835ae | 3630 | case GGA_NORMAL: |
b49e97c9 TS |
3631 | h->root.dynindx = --hsd->min_got_dynindx; |
3632 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3633 | break; |
3634 | ||
3635 | case GGA_RELOC_ONLY: | |
634835ae RS |
3636 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
3637 | hsd->low = (struct elf_link_hash_entry *) h; | |
3638 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3639 | break; | |
b49e97c9 TS |
3640 | } |
3641 | ||
b34976b6 | 3642 | return TRUE; |
b49e97c9 TS |
3643 | } |
3644 | ||
ee227692 RS |
3645 | /* Record that input bfd ABFD requires a GOT entry like *LOOKUP |
3646 | (which is owned by the caller and shouldn't be added to the | |
3647 | hash table directly). */ | |
3648 | ||
3649 | static bfd_boolean | |
3650 | mips_elf_record_got_entry (struct bfd_link_info *info, bfd *abfd, | |
3651 | struct mips_got_entry *lookup) | |
3652 | { | |
3653 | struct mips_elf_link_hash_table *htab; | |
3654 | struct mips_got_entry *entry; | |
3655 | struct mips_got_info *g; | |
3656 | void **loc, **bfd_loc; | |
3657 | ||
3658 | /* Make sure there's a slot for this entry in the master GOT. */ | |
3659 | htab = mips_elf_hash_table (info); | |
3660 | g = htab->got_info; | |
3661 | loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3662 | if (!loc) | |
3663 | return FALSE; | |
3664 | ||
3665 | /* Populate the entry if it isn't already. */ | |
3666 | entry = (struct mips_got_entry *) *loc; | |
3667 | if (!entry) | |
3668 | { | |
3669 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); | |
3670 | if (!entry) | |
3671 | return FALSE; | |
3672 | ||
9ab066b4 | 3673 | lookup->tls_initialized = FALSE; |
ee227692 RS |
3674 | lookup->gotidx = -1; |
3675 | *entry = *lookup; | |
3676 | *loc = entry; | |
3677 | } | |
3678 | ||
3679 | /* Reuse the same GOT entry for the BFD's GOT. */ | |
3680 | g = mips_elf_bfd_got (abfd, TRUE); | |
3681 | if (!g) | |
3682 | return FALSE; | |
3683 | ||
3684 | bfd_loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
3685 | if (!bfd_loc) | |
3686 | return FALSE; | |
3687 | ||
3688 | if (!*bfd_loc) | |
3689 | *bfd_loc = entry; | |
3690 | return TRUE; | |
3691 | } | |
3692 | ||
e641e783 RS |
3693 | /* ABFD has a GOT relocation of type R_TYPE against H. Reserve a GOT |
3694 | entry for it. FOR_CALL is true if the caller is only interested in | |
6ccf4795 | 3695 | using the GOT entry for calls. */ |
b49e97c9 | 3696 | |
b34976b6 | 3697 | static bfd_boolean |
9719ad41 RS |
3698 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3699 | bfd *abfd, struct bfd_link_info *info, | |
e641e783 | 3700 | bfd_boolean for_call, int r_type) |
b49e97c9 | 3701 | { |
a8028dd0 | 3702 | struct mips_elf_link_hash_table *htab; |
634835ae | 3703 | struct mips_elf_link_hash_entry *hmips; |
ee227692 RS |
3704 | struct mips_got_entry entry; |
3705 | unsigned char tls_type; | |
a8028dd0 RS |
3706 | |
3707 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3708 | BFD_ASSERT (htab != NULL); |
3709 | ||
634835ae | 3710 | hmips = (struct mips_elf_link_hash_entry *) h; |
6ccf4795 RS |
3711 | if (!for_call) |
3712 | hmips->got_only_for_calls = FALSE; | |
f4416af6 | 3713 | |
b49e97c9 TS |
3714 | /* A global symbol in the GOT must also be in the dynamic symbol |
3715 | table. */ | |
7c5fcef7 L |
3716 | if (h->dynindx == -1) |
3717 | { | |
3718 | switch (ELF_ST_VISIBILITY (h->other)) | |
3719 | { | |
3720 | case STV_INTERNAL: | |
3721 | case STV_HIDDEN: | |
33bb52fb | 3722 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3723 | break; |
3724 | } | |
c152c796 | 3725 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3726 | return FALSE; |
7c5fcef7 | 3727 | } |
b49e97c9 | 3728 | |
ee227692 | 3729 | tls_type = mips_elf_reloc_tls_type (r_type); |
9ab066b4 | 3730 | if (tls_type == GOT_TLS_NONE && hmips->global_got_area > GGA_NORMAL) |
ee227692 | 3731 | hmips->global_got_area = GGA_NORMAL; |
86324f90 | 3732 | |
f4416af6 AO |
3733 | entry.abfd = abfd; |
3734 | entry.symndx = -1; | |
3735 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
ee227692 RS |
3736 | entry.tls_type = tls_type; |
3737 | return mips_elf_record_got_entry (info, abfd, &entry); | |
b49e97c9 | 3738 | } |
f4416af6 | 3739 | |
e641e783 RS |
3740 | /* ABFD has a GOT relocation of type R_TYPE against symbol SYMNDX + ADDEND, |
3741 | where SYMNDX is a local symbol. Reserve a GOT entry for it. */ | |
f4416af6 AO |
3742 | |
3743 | static bfd_boolean | |
9719ad41 | 3744 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
e641e783 | 3745 | struct bfd_link_info *info, int r_type) |
f4416af6 | 3746 | { |
a8028dd0 RS |
3747 | struct mips_elf_link_hash_table *htab; |
3748 | struct mips_got_info *g; | |
ee227692 | 3749 | struct mips_got_entry entry; |
f4416af6 | 3750 | |
a8028dd0 | 3751 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3752 | BFD_ASSERT (htab != NULL); |
3753 | ||
a8028dd0 RS |
3754 | g = htab->got_info; |
3755 | BFD_ASSERT (g != NULL); | |
3756 | ||
f4416af6 AO |
3757 | entry.abfd = abfd; |
3758 | entry.symndx = symndx; | |
3759 | entry.d.addend = addend; | |
e641e783 | 3760 | entry.tls_type = mips_elf_reloc_tls_type (r_type); |
ee227692 | 3761 | return mips_elf_record_got_entry (info, abfd, &entry); |
f4416af6 | 3762 | } |
c224138d | 3763 | |
13db6b44 RS |
3764 | /* Record that ABFD has a page relocation against SYMNDX + ADDEND. |
3765 | H is the symbol's hash table entry, or null if SYMNDX is local | |
3766 | to ABFD. */ | |
c224138d RS |
3767 | |
3768 | static bfd_boolean | |
13db6b44 RS |
3769 | mips_elf_record_got_page_ref (struct bfd_link_info *info, bfd *abfd, |
3770 | long symndx, struct elf_link_hash_entry *h, | |
3771 | bfd_signed_vma addend) | |
c224138d | 3772 | { |
a8028dd0 | 3773 | struct mips_elf_link_hash_table *htab; |
ee227692 | 3774 | struct mips_got_info *g1, *g2; |
13db6b44 | 3775 | struct mips_got_page_ref lookup, *entry; |
ee227692 | 3776 | void **loc, **bfd_loc; |
c224138d | 3777 | |
a8028dd0 | 3778 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3779 | BFD_ASSERT (htab != NULL); |
3780 | ||
ee227692 RS |
3781 | g1 = htab->got_info; |
3782 | BFD_ASSERT (g1 != NULL); | |
a8028dd0 | 3783 | |
13db6b44 RS |
3784 | if (h) |
3785 | { | |
3786 | lookup.symndx = -1; | |
3787 | lookup.u.h = (struct mips_elf_link_hash_entry *) h; | |
3788 | } | |
3789 | else | |
3790 | { | |
3791 | lookup.symndx = symndx; | |
3792 | lookup.u.abfd = abfd; | |
3793 | } | |
3794 | lookup.addend = addend; | |
3795 | loc = htab_find_slot (g1->got_page_refs, &lookup, INSERT); | |
c224138d RS |
3796 | if (loc == NULL) |
3797 | return FALSE; | |
3798 | ||
13db6b44 | 3799 | entry = (struct mips_got_page_ref *) *loc; |
c224138d RS |
3800 | if (!entry) |
3801 | { | |
3802 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
3803 | if (!entry) | |
3804 | return FALSE; | |
3805 | ||
13db6b44 | 3806 | *entry = lookup; |
c224138d RS |
3807 | *loc = entry; |
3808 | } | |
3809 | ||
ee227692 RS |
3810 | /* Add the same entry to the BFD's GOT. */ |
3811 | g2 = mips_elf_bfd_got (abfd, TRUE); | |
3812 | if (!g2) | |
3813 | return FALSE; | |
3814 | ||
13db6b44 | 3815 | bfd_loc = htab_find_slot (g2->got_page_refs, &lookup, INSERT); |
ee227692 RS |
3816 | if (!bfd_loc) |
3817 | return FALSE; | |
3818 | ||
3819 | if (!*bfd_loc) | |
3820 | *bfd_loc = entry; | |
3821 | ||
c224138d RS |
3822 | return TRUE; |
3823 | } | |
33bb52fb RS |
3824 | |
3825 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
3826 | ||
3827 | static void | |
3828 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
3829 | unsigned int n) | |
3830 | { | |
3831 | asection *s; | |
3832 | struct mips_elf_link_hash_table *htab; | |
3833 | ||
3834 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3835 | BFD_ASSERT (htab != NULL); |
3836 | ||
33bb52fb RS |
3837 | s = mips_elf_rel_dyn_section (info, FALSE); |
3838 | BFD_ASSERT (s != NULL); | |
3839 | ||
3840 | if (htab->is_vxworks) | |
3841 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
3842 | else | |
3843 | { | |
3844 | if (s->size == 0) | |
3845 | { | |
3846 | /* Make room for a null element. */ | |
3847 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
3848 | ++s->reloc_count; | |
3849 | } | |
3850 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
3851 | } | |
3852 | } | |
3853 | \f | |
476366af RS |
3854 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
3855 | mips_elf_traverse_got_arg structure. Count the number of GOT | |
3856 | entries and TLS relocs. Set DATA->value to true if we need | |
3857 | to resolve indirect or warning symbols and then recreate the GOT. */ | |
33bb52fb RS |
3858 | |
3859 | static int | |
3860 | mips_elf_check_recreate_got (void **entryp, void *data) | |
3861 | { | |
3862 | struct mips_got_entry *entry; | |
476366af | 3863 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
3864 | |
3865 | entry = (struct mips_got_entry *) *entryp; | |
476366af | 3866 | arg = (struct mips_elf_traverse_got_arg *) data; |
33bb52fb RS |
3867 | if (entry->abfd != NULL && entry->symndx == -1) |
3868 | { | |
3869 | struct mips_elf_link_hash_entry *h; | |
3870 | ||
3871 | h = entry->d.h; | |
3872 | if (h->root.root.type == bfd_link_hash_indirect | |
3873 | || h->root.root.type == bfd_link_hash_warning) | |
3874 | { | |
476366af | 3875 | arg->value = TRUE; |
33bb52fb RS |
3876 | return 0; |
3877 | } | |
3878 | } | |
476366af | 3879 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
33bb52fb RS |
3880 | return 1; |
3881 | } | |
3882 | ||
476366af RS |
3883 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
3884 | mips_elf_traverse_got_arg structure. Add all entries to DATA->g, | |
3885 | converting entries for indirect and warning symbols into entries | |
3886 | for the target symbol. Set DATA->g to null on error. */ | |
33bb52fb RS |
3887 | |
3888 | static int | |
3889 | mips_elf_recreate_got (void **entryp, void *data) | |
3890 | { | |
72e7511a | 3891 | struct mips_got_entry new_entry, *entry; |
476366af | 3892 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
3893 | void **slot; |
3894 | ||
33bb52fb | 3895 | entry = (struct mips_got_entry *) *entryp; |
476366af | 3896 | arg = (struct mips_elf_traverse_got_arg *) data; |
72e7511a RS |
3897 | if (entry->abfd != NULL |
3898 | && entry->symndx == -1 | |
3899 | && (entry->d.h->root.root.type == bfd_link_hash_indirect | |
3900 | || entry->d.h->root.root.type == bfd_link_hash_warning)) | |
33bb52fb RS |
3901 | { |
3902 | struct mips_elf_link_hash_entry *h; | |
3903 | ||
72e7511a RS |
3904 | new_entry = *entry; |
3905 | entry = &new_entry; | |
33bb52fb | 3906 | h = entry->d.h; |
72e7511a | 3907 | do |
634835ae RS |
3908 | { |
3909 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
3910 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3911 | } | |
72e7511a RS |
3912 | while (h->root.root.type == bfd_link_hash_indirect |
3913 | || h->root.root.type == bfd_link_hash_warning); | |
33bb52fb RS |
3914 | entry->d.h = h; |
3915 | } | |
476366af | 3916 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); |
33bb52fb RS |
3917 | if (slot == NULL) |
3918 | { | |
476366af | 3919 | arg->g = NULL; |
33bb52fb RS |
3920 | return 0; |
3921 | } | |
3922 | if (*slot == NULL) | |
72e7511a RS |
3923 | { |
3924 | if (entry == &new_entry) | |
3925 | { | |
3926 | entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
3927 | if (!entry) | |
3928 | { | |
476366af | 3929 | arg->g = NULL; |
72e7511a RS |
3930 | return 0; |
3931 | } | |
3932 | *entry = new_entry; | |
3933 | } | |
3934 | *slot = entry; | |
476366af | 3935 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
72e7511a | 3936 | } |
33bb52fb RS |
3937 | return 1; |
3938 | } | |
3939 | ||
13db6b44 RS |
3940 | /* Return the maximum number of GOT page entries required for RANGE. */ |
3941 | ||
3942 | static bfd_vma | |
3943 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
3944 | { | |
3945 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
3946 | } | |
3947 | ||
3948 | /* Record that G requires a page entry that can reach SEC + ADDEND. */ | |
3949 | ||
3950 | static bfd_boolean | |
3951 | mips_elf_record_got_page_entry (struct mips_got_info *g, | |
3952 | asection *sec, bfd_signed_vma addend) | |
3953 | { | |
3954 | struct mips_got_page_entry lookup, *entry; | |
3955 | struct mips_got_page_range **range_ptr, *range; | |
3956 | bfd_vma old_pages, new_pages; | |
3957 | void **loc; | |
3958 | ||
3959 | /* Find the mips_got_page_entry hash table entry for this section. */ | |
3960 | lookup.sec = sec; | |
3961 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
3962 | if (loc == NULL) | |
3963 | return FALSE; | |
3964 | ||
3965 | /* Create a mips_got_page_entry if this is the first time we've | |
3966 | seen the section. */ | |
3967 | entry = (struct mips_got_page_entry *) *loc; | |
3968 | if (!entry) | |
3969 | { | |
3970 | entry = bfd_zalloc (sec->owner, sizeof (*entry)); | |
3971 | if (!entry) | |
3972 | return FALSE; | |
3973 | ||
3974 | entry->sec = sec; | |
3975 | *loc = entry; | |
3976 | } | |
3977 | ||
3978 | /* Skip over ranges whose maximum extent cannot share a page entry | |
3979 | with ADDEND. */ | |
3980 | range_ptr = &entry->ranges; | |
3981 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
3982 | range_ptr = &(*range_ptr)->next; | |
3983 | ||
3984 | /* If we scanned to the end of the list, or found a range whose | |
3985 | minimum extent cannot share a page entry with ADDEND, create | |
3986 | a new singleton range. */ | |
3987 | range = *range_ptr; | |
3988 | if (!range || addend < range->min_addend - 0xffff) | |
3989 | { | |
3990 | range = bfd_zalloc (sec->owner, sizeof (*range)); | |
3991 | if (!range) | |
3992 | return FALSE; | |
3993 | ||
3994 | range->next = *range_ptr; | |
3995 | range->min_addend = addend; | |
3996 | range->max_addend = addend; | |
3997 | ||
3998 | *range_ptr = range; | |
3999 | entry->num_pages++; | |
4000 | g->page_gotno++; | |
4001 | return TRUE; | |
4002 | } | |
4003 | ||
4004 | /* Remember how many pages the old range contributed. */ | |
4005 | old_pages = mips_elf_pages_for_range (range); | |
4006 | ||
4007 | /* Update the ranges. */ | |
4008 | if (addend < range->min_addend) | |
4009 | range->min_addend = addend; | |
4010 | else if (addend > range->max_addend) | |
4011 | { | |
4012 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
4013 | { | |
4014 | old_pages += mips_elf_pages_for_range (range->next); | |
4015 | range->max_addend = range->next->max_addend; | |
4016 | range->next = range->next->next; | |
4017 | } | |
4018 | else | |
4019 | range->max_addend = addend; | |
4020 | } | |
4021 | ||
4022 | /* Record any change in the total estimate. */ | |
4023 | new_pages = mips_elf_pages_for_range (range); | |
4024 | if (old_pages != new_pages) | |
4025 | { | |
4026 | entry->num_pages += new_pages - old_pages; | |
4027 | g->page_gotno += new_pages - old_pages; | |
4028 | } | |
4029 | ||
4030 | return TRUE; | |
4031 | } | |
4032 | ||
4033 | /* A htab_traverse callback for which *REFP points to a mips_got_page_ref | |
4034 | and for which DATA points to a mips_elf_traverse_got_arg. Work out | |
4035 | whether the page reference described by *REFP needs a GOT page entry, | |
4036 | and record that entry in DATA->g if so. Set DATA->g to null on failure. */ | |
4037 | ||
4038 | static bfd_boolean | |
4039 | mips_elf_resolve_got_page_ref (void **refp, void *data) | |
4040 | { | |
4041 | struct mips_got_page_ref *ref; | |
4042 | struct mips_elf_traverse_got_arg *arg; | |
4043 | struct mips_elf_link_hash_table *htab; | |
4044 | asection *sec; | |
4045 | bfd_vma addend; | |
4046 | ||
4047 | ref = (struct mips_got_page_ref *) *refp; | |
4048 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4049 | htab = mips_elf_hash_table (arg->info); | |
4050 | ||
4051 | if (ref->symndx < 0) | |
4052 | { | |
4053 | struct mips_elf_link_hash_entry *h; | |
4054 | ||
4055 | /* Global GOT_PAGEs decay to GOT_DISP and so don't need page entries. */ | |
4056 | h = ref->u.h; | |
4057 | if (!SYMBOL_REFERENCES_LOCAL (arg->info, &h->root)) | |
4058 | return 1; | |
4059 | ||
4060 | /* Ignore undefined symbols; we'll issue an error later if | |
4061 | appropriate. */ | |
4062 | if (!((h->root.root.type == bfd_link_hash_defined | |
4063 | || h->root.root.type == bfd_link_hash_defweak) | |
4064 | && h->root.root.u.def.section)) | |
4065 | return 1; | |
4066 | ||
4067 | sec = h->root.root.u.def.section; | |
4068 | addend = h->root.root.u.def.value + ref->addend; | |
4069 | } | |
4070 | else | |
4071 | { | |
4072 | Elf_Internal_Sym *isym; | |
4073 | ||
4074 | /* Read in the symbol. */ | |
4075 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ref->u.abfd, | |
4076 | ref->symndx); | |
4077 | if (isym == NULL) | |
4078 | { | |
4079 | arg->g = NULL; | |
4080 | return 0; | |
4081 | } | |
4082 | ||
4083 | /* Get the associated input section. */ | |
4084 | sec = bfd_section_from_elf_index (ref->u.abfd, isym->st_shndx); | |
4085 | if (sec == NULL) | |
4086 | { | |
4087 | arg->g = NULL; | |
4088 | return 0; | |
4089 | } | |
4090 | ||
4091 | /* If this is a mergable section, work out the section and offset | |
4092 | of the merged data. For section symbols, the addend specifies | |
4093 | of the offset _of_ the first byte in the data, otherwise it | |
4094 | specifies the offset _from_ the first byte. */ | |
4095 | if (sec->flags & SEC_MERGE) | |
4096 | { | |
4097 | void *secinfo; | |
4098 | ||
4099 | secinfo = elf_section_data (sec)->sec_info; | |
4100 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
4101 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4102 | isym->st_value + ref->addend); | |
4103 | else | |
4104 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4105 | isym->st_value) + ref->addend; | |
4106 | } | |
4107 | else | |
4108 | addend = isym->st_value + ref->addend; | |
4109 | } | |
4110 | if (!mips_elf_record_got_page_entry (arg->g, sec, addend)) | |
4111 | { | |
4112 | arg->g = NULL; | |
4113 | return 0; | |
4114 | } | |
4115 | return 1; | |
4116 | } | |
4117 | ||
33bb52fb | 4118 | /* If any entries in G->got_entries are for indirect or warning symbols, |
13db6b44 RS |
4119 | replace them with entries for the target symbol. Convert g->got_page_refs |
4120 | into got_page_entry structures and estimate the number of page entries | |
4121 | that they require. */ | |
33bb52fb RS |
4122 | |
4123 | static bfd_boolean | |
476366af RS |
4124 | mips_elf_resolve_final_got_entries (struct bfd_link_info *info, |
4125 | struct mips_got_info *g) | |
33bb52fb | 4126 | { |
476366af RS |
4127 | struct mips_elf_traverse_got_arg tga; |
4128 | struct mips_got_info oldg; | |
4129 | ||
4130 | oldg = *g; | |
33bb52fb | 4131 | |
476366af RS |
4132 | tga.info = info; |
4133 | tga.g = g; | |
4134 | tga.value = FALSE; | |
4135 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &tga); | |
4136 | if (tga.value) | |
33bb52fb | 4137 | { |
476366af RS |
4138 | *g = oldg; |
4139 | g->got_entries = htab_create (htab_size (oldg.got_entries), | |
4140 | mips_elf_got_entry_hash, | |
4141 | mips_elf_got_entry_eq, NULL); | |
4142 | if (!g->got_entries) | |
33bb52fb RS |
4143 | return FALSE; |
4144 | ||
476366af RS |
4145 | htab_traverse (oldg.got_entries, mips_elf_recreate_got, &tga); |
4146 | if (!tga.g) | |
4147 | return FALSE; | |
4148 | ||
4149 | htab_delete (oldg.got_entries); | |
33bb52fb | 4150 | } |
13db6b44 RS |
4151 | |
4152 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4153 | mips_got_page_entry_eq, NULL); | |
4154 | if (g->got_page_entries == NULL) | |
4155 | return FALSE; | |
4156 | ||
4157 | tga.info = info; | |
4158 | tga.g = g; | |
4159 | htab_traverse (g->got_page_refs, mips_elf_resolve_got_page_ref, &tga); | |
4160 | ||
33bb52fb RS |
4161 | return TRUE; |
4162 | } | |
4163 | ||
6c42ddb9 RS |
4164 | /* A mips_elf_link_hash_traverse callback for which DATA points to the |
4165 | link_info structure. Decide whether the hash entry needs an entry in | |
4166 | the global part of the primary GOT, setting global_got_area accordingly. | |
4167 | Count the number of global symbols that are in the primary GOT only | |
4168 | because they have relocations against them (reloc_only_gotno). */ | |
33bb52fb RS |
4169 | |
4170 | static int | |
d4596a51 | 4171 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4172 | { |
020d7251 | 4173 | struct bfd_link_info *info; |
6ccf4795 | 4174 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4175 | struct mips_got_info *g; |
4176 | ||
020d7251 | 4177 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4178 | htab = mips_elf_hash_table (info); |
4179 | g = htab->got_info; | |
d4596a51 | 4180 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4181 | { |
020d7251 RS |
4182 | /* Make a final decision about whether the symbol belongs in the |
4183 | local or global GOT. Symbols that bind locally can (and in the | |
4184 | case of forced-local symbols, must) live in the local GOT. | |
4185 | Those that are aren't in the dynamic symbol table must also | |
4186 | live in the local GOT. | |
4187 | ||
4188 | Note that the former condition does not always imply the | |
4189 | latter: symbols do not bind locally if they are completely | |
4190 | undefined. We'll report undefined symbols later if appropriate. */ | |
6ccf4795 RS |
4191 | if (h->root.dynindx == -1 |
4192 | || (h->got_only_for_calls | |
4193 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4194 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
6c42ddb9 RS |
4195 | /* The symbol belongs in the local GOT. We no longer need this |
4196 | entry if it was only used for relocations; those relocations | |
4197 | will be against the null or section symbol instead of H. */ | |
4198 | h->global_got_area = GGA_NONE; | |
6ccf4795 RS |
4199 | else if (htab->is_vxworks |
4200 | && h->got_only_for_calls | |
4201 | && h->root.plt.offset != MINUS_ONE) | |
4202 | /* On VxWorks, calls can refer directly to the .got.plt entry; | |
4203 | they don't need entries in the regular GOT. .got.plt entries | |
4204 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4205 | h->global_got_area = GGA_NONE; | |
6c42ddb9 | 4206 | else if (h->global_got_area == GGA_RELOC_ONLY) |
23cc69b6 | 4207 | { |
6c42ddb9 | 4208 | g->reloc_only_gotno++; |
23cc69b6 | 4209 | g->global_gotno++; |
23cc69b6 | 4210 | } |
33bb52fb RS |
4211 | } |
4212 | return 1; | |
4213 | } | |
f4416af6 | 4214 | \f |
d7206569 RS |
4215 | /* A htab_traverse callback for GOT entries. Add each one to the GOT |
4216 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
f4416af6 AO |
4217 | |
4218 | static int | |
d7206569 | 4219 | mips_elf_add_got_entry (void **entryp, void *data) |
f4416af6 | 4220 | { |
d7206569 RS |
4221 | struct mips_got_entry *entry; |
4222 | struct mips_elf_traverse_got_arg *arg; | |
4223 | void **slot; | |
f4416af6 | 4224 | |
d7206569 RS |
4225 | entry = (struct mips_got_entry *) *entryp; |
4226 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4227 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); | |
4228 | if (!slot) | |
f4416af6 | 4229 | { |
d7206569 RS |
4230 | arg->g = NULL; |
4231 | return 0; | |
f4416af6 | 4232 | } |
d7206569 | 4233 | if (!*slot) |
c224138d | 4234 | { |
d7206569 RS |
4235 | *slot = entry; |
4236 | mips_elf_count_got_entry (arg->info, arg->g, entry); | |
c224138d | 4237 | } |
f4416af6 AO |
4238 | return 1; |
4239 | } | |
4240 | ||
d7206569 RS |
4241 | /* A htab_traverse callback for GOT page entries. Add each one to the GOT |
4242 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
c224138d RS |
4243 | |
4244 | static int | |
d7206569 | 4245 | mips_elf_add_got_page_entry (void **entryp, void *data) |
c224138d | 4246 | { |
d7206569 RS |
4247 | struct mips_got_page_entry *entry; |
4248 | struct mips_elf_traverse_got_arg *arg; | |
4249 | void **slot; | |
c224138d | 4250 | |
d7206569 RS |
4251 | entry = (struct mips_got_page_entry *) *entryp; |
4252 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4253 | slot = htab_find_slot (arg->g->got_page_entries, entry, INSERT); | |
4254 | if (!slot) | |
c224138d | 4255 | { |
d7206569 | 4256 | arg->g = NULL; |
c224138d RS |
4257 | return 0; |
4258 | } | |
d7206569 RS |
4259 | if (!*slot) |
4260 | { | |
4261 | *slot = entry; | |
4262 | arg->g->page_gotno += entry->num_pages; | |
4263 | } | |
c224138d RS |
4264 | return 1; |
4265 | } | |
4266 | ||
d7206569 RS |
4267 | /* Consider merging FROM, which is ABFD's GOT, into TO. Return -1 if |
4268 | this would lead to overflow, 1 if they were merged successfully, | |
4269 | and 0 if a merge failed due to lack of memory. (These values are chosen | |
4270 | so that nonnegative return values can be returned by a htab_traverse | |
4271 | callback.) */ | |
c224138d RS |
4272 | |
4273 | static int | |
d7206569 | 4274 | mips_elf_merge_got_with (bfd *abfd, struct mips_got_info *from, |
c224138d RS |
4275 | struct mips_got_info *to, |
4276 | struct mips_elf_got_per_bfd_arg *arg) | |
4277 | { | |
d7206569 | 4278 | struct mips_elf_traverse_got_arg tga; |
c224138d RS |
4279 | unsigned int estimate; |
4280 | ||
4281 | /* Work out how many page entries we would need for the combined GOT. */ | |
4282 | estimate = arg->max_pages; | |
4283 | if (estimate >= from->page_gotno + to->page_gotno) | |
4284 | estimate = from->page_gotno + to->page_gotno; | |
4285 | ||
e2ece73c | 4286 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4287 | would be needed. */ |
e2ece73c RS |
4288 | estimate += from->local_gotno + to->local_gotno; |
4289 | estimate += from->tls_gotno + to->tls_gotno; | |
4290 | ||
17214937 RS |
4291 | /* If we're merging with the primary got, any TLS relocations will |
4292 | come after the full set of global entries. Otherwise estimate those | |
e2ece73c | 4293 | conservatively as well. */ |
17214937 | 4294 | if (to == arg->primary && from->tls_gotno + to->tls_gotno) |
e2ece73c RS |
4295 | estimate += arg->global_count; |
4296 | else | |
4297 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4298 | |
4299 | /* Bail out if the combined GOT might be too big. */ | |
4300 | if (estimate > arg->max_count) | |
4301 | return -1; | |
4302 | ||
c224138d | 4303 | /* Transfer the bfd's got information from FROM to TO. */ |
d7206569 RS |
4304 | tga.info = arg->info; |
4305 | tga.g = to; | |
4306 | htab_traverse (from->got_entries, mips_elf_add_got_entry, &tga); | |
4307 | if (!tga.g) | |
c224138d RS |
4308 | return 0; |
4309 | ||
d7206569 RS |
4310 | htab_traverse (from->got_page_entries, mips_elf_add_got_page_entry, &tga); |
4311 | if (!tga.g) | |
c224138d RS |
4312 | return 0; |
4313 | ||
d7206569 | 4314 | mips_elf_replace_bfd_got (abfd, to); |
c224138d RS |
4315 | return 1; |
4316 | } | |
4317 | ||
d7206569 | 4318 | /* Attempt to merge GOT G, which belongs to ABFD. Try to use as much |
f4416af6 AO |
4319 | as possible of the primary got, since it doesn't require explicit |
4320 | dynamic relocations, but don't use bfds that would reference global | |
4321 | symbols out of the addressable range. Failing the primary got, | |
4322 | attempt to merge with the current got, or finish the current got | |
4323 | and then make make the new got current. */ | |
4324 | ||
d7206569 RS |
4325 | static bfd_boolean |
4326 | mips_elf_merge_got (bfd *abfd, struct mips_got_info *g, | |
4327 | struct mips_elf_got_per_bfd_arg *arg) | |
f4416af6 | 4328 | { |
c224138d RS |
4329 | unsigned int estimate; |
4330 | int result; | |
4331 | ||
476366af | 4332 | if (!mips_elf_resolve_final_got_entries (arg->info, g)) |
d7206569 RS |
4333 | return FALSE; |
4334 | ||
c224138d RS |
4335 | /* Work out the number of page, local and TLS entries. */ |
4336 | estimate = arg->max_pages; | |
4337 | if (estimate > g->page_gotno) | |
4338 | estimate = g->page_gotno; | |
4339 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4340 | |
4341 | /* We place TLS GOT entries after both locals and globals. The globals | |
4342 | for the primary GOT may overflow the normal GOT size limit, so be | |
4343 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4344 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4345 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4346 | |
c224138d | 4347 | if (estimate <= arg->max_count) |
f4416af6 | 4348 | { |
c224138d RS |
4349 | /* If we don't have a primary GOT, use it as |
4350 | a starting point for the primary GOT. */ | |
4351 | if (!arg->primary) | |
4352 | { | |
d7206569 RS |
4353 | arg->primary = g; |
4354 | return TRUE; | |
c224138d | 4355 | } |
f4416af6 | 4356 | |
c224138d | 4357 | /* Try merging with the primary GOT. */ |
d7206569 | 4358 | result = mips_elf_merge_got_with (abfd, g, arg->primary, arg); |
c224138d RS |
4359 | if (result >= 0) |
4360 | return result; | |
f4416af6 | 4361 | } |
c224138d | 4362 | |
f4416af6 | 4363 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4364 | if (arg->current) |
f4416af6 | 4365 | { |
d7206569 | 4366 | result = mips_elf_merge_got_with (abfd, g, arg->current, arg); |
c224138d RS |
4367 | if (result >= 0) |
4368 | return result; | |
f4416af6 | 4369 | } |
c224138d | 4370 | |
f4416af6 AO |
4371 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4372 | fits; if it turns out that it doesn't, we'll get relocation | |
4373 | overflows anyway. */ | |
c224138d RS |
4374 | g->next = arg->current; |
4375 | arg->current = g; | |
0f20cc35 | 4376 | |
d7206569 | 4377 | return TRUE; |
0f20cc35 DJ |
4378 | } |
4379 | ||
72e7511a RS |
4380 | /* ENTRYP is a hash table entry for a mips_got_entry. Set its gotidx |
4381 | to GOTIDX, duplicating the entry if it has already been assigned | |
4382 | an index in a different GOT. */ | |
4383 | ||
4384 | static bfd_boolean | |
4385 | mips_elf_set_gotidx (void **entryp, long gotidx) | |
4386 | { | |
4387 | struct mips_got_entry *entry; | |
4388 | ||
4389 | entry = (struct mips_got_entry *) *entryp; | |
4390 | if (entry->gotidx > 0) | |
4391 | { | |
4392 | struct mips_got_entry *new_entry; | |
4393 | ||
4394 | new_entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4395 | if (!new_entry) | |
4396 | return FALSE; | |
4397 | ||
4398 | *new_entry = *entry; | |
4399 | *entryp = new_entry; | |
4400 | entry = new_entry; | |
4401 | } | |
4402 | entry->gotidx = gotidx; | |
4403 | return TRUE; | |
4404 | } | |
4405 | ||
4406 | /* Set the TLS GOT index for the GOT entry in ENTRYP. DATA points to a | |
4407 | mips_elf_traverse_got_arg in which DATA->value is the size of one | |
4408 | GOT entry. Set DATA->g to null on failure. */ | |
0f20cc35 DJ |
4409 | |
4410 | static int | |
72e7511a | 4411 | mips_elf_initialize_tls_index (void **entryp, void *data) |
0f20cc35 | 4412 | { |
72e7511a RS |
4413 | struct mips_got_entry *entry; |
4414 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 DJ |
4415 | |
4416 | /* We're only interested in TLS symbols. */ | |
72e7511a | 4417 | entry = (struct mips_got_entry *) *entryp; |
9ab066b4 | 4418 | if (entry->tls_type == GOT_TLS_NONE) |
0f20cc35 DJ |
4419 | return 1; |
4420 | ||
72e7511a | 4421 | arg = (struct mips_elf_traverse_got_arg *) data; |
6c42ddb9 | 4422 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->tls_assigned_gotno)) |
ead49a57 | 4423 | { |
6c42ddb9 RS |
4424 | arg->g = NULL; |
4425 | return 0; | |
f4416af6 AO |
4426 | } |
4427 | ||
ead49a57 | 4428 | /* Account for the entries we've just allocated. */ |
9ab066b4 | 4429 | arg->g->tls_assigned_gotno += mips_tls_got_entries (entry->tls_type); |
f4416af6 AO |
4430 | return 1; |
4431 | } | |
4432 | ||
ab361d49 RS |
4433 | /* A htab_traverse callback for GOT entries, where DATA points to a |
4434 | mips_elf_traverse_got_arg. Set the global_got_area of each global | |
4435 | symbol to DATA->value. */ | |
f4416af6 | 4436 | |
f4416af6 | 4437 | static int |
ab361d49 | 4438 | mips_elf_set_global_got_area (void **entryp, void *data) |
f4416af6 | 4439 | { |
ab361d49 RS |
4440 | struct mips_got_entry *entry; |
4441 | struct mips_elf_traverse_got_arg *arg; | |
f4416af6 | 4442 | |
ab361d49 RS |
4443 | entry = (struct mips_got_entry *) *entryp; |
4444 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4445 | if (entry->abfd != NULL | |
4446 | && entry->symndx == -1 | |
4447 | && entry->d.h->global_got_area != GGA_NONE) | |
4448 | entry->d.h->global_got_area = arg->value; | |
4449 | return 1; | |
4450 | } | |
4451 | ||
4452 | /* A htab_traverse callback for secondary GOT entries, where DATA points | |
4453 | to a mips_elf_traverse_got_arg. Assign GOT indices to global entries | |
4454 | and record the number of relocations they require. DATA->value is | |
72e7511a | 4455 | the size of one GOT entry. Set DATA->g to null on failure. */ |
ab361d49 RS |
4456 | |
4457 | static int | |
4458 | mips_elf_set_global_gotidx (void **entryp, void *data) | |
4459 | { | |
4460 | struct mips_got_entry *entry; | |
4461 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 | 4462 | |
ab361d49 RS |
4463 | entry = (struct mips_got_entry *) *entryp; |
4464 | arg = (struct mips_elf_traverse_got_arg *) data; | |
634835ae RS |
4465 | if (entry->abfd != NULL |
4466 | && entry->symndx == -1 | |
4467 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 | 4468 | { |
72e7511a RS |
4469 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_gotno)) |
4470 | { | |
4471 | arg->g = NULL; | |
4472 | return 0; | |
4473 | } | |
4474 | arg->g->assigned_gotno += 1; | |
4475 | ||
ab361d49 RS |
4476 | if (arg->info->shared |
4477 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
4478 | && entry->d.h->root.def_dynamic | |
4479 | && !entry->d.h->root.def_regular)) | |
4480 | arg->g->relocs += 1; | |
f4416af6 AO |
4481 | } |
4482 | ||
4483 | return 1; | |
4484 | } | |
4485 | ||
33bb52fb RS |
4486 | /* A htab_traverse callback for GOT entries for which DATA is the |
4487 | bfd_link_info. Forbid any global symbols from having traditional | |
4488 | lazy-binding stubs. */ | |
4489 | ||
0626d451 | 4490 | static int |
33bb52fb | 4491 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4492 | { |
33bb52fb RS |
4493 | struct bfd_link_info *info; |
4494 | struct mips_elf_link_hash_table *htab; | |
4495 | struct mips_got_entry *entry; | |
0626d451 | 4496 | |
33bb52fb RS |
4497 | entry = (struct mips_got_entry *) *entryp; |
4498 | info = (struct bfd_link_info *) data; | |
4499 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4500 | BFD_ASSERT (htab != NULL); |
4501 | ||
0626d451 RS |
4502 | if (entry->abfd != NULL |
4503 | && entry->symndx == -1 | |
33bb52fb | 4504 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4505 | { |
33bb52fb RS |
4506 | entry->d.h->needs_lazy_stub = FALSE; |
4507 | htab->lazy_stub_count--; | |
f4416af6 | 4508 | } |
143d77c5 | 4509 | |
f4416af6 AO |
4510 | return 1; |
4511 | } | |
4512 | ||
f4416af6 AO |
4513 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4514 | the primary GOT. */ | |
4515 | static bfd_vma | |
9719ad41 | 4516 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 | 4517 | { |
d7206569 | 4518 | if (!g->next) |
f4416af6 AO |
4519 | return 0; |
4520 | ||
d7206569 | 4521 | g = mips_elf_bfd_got (ibfd, FALSE); |
f4416af6 AO |
4522 | if (! g) |
4523 | return 0; | |
4524 | ||
4525 | BFD_ASSERT (g->next); | |
4526 | ||
4527 | g = g->next; | |
143d77c5 | 4528 | |
0f20cc35 DJ |
4529 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4530 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4531 | } |
4532 | ||
4533 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4534 | a sequence of GOTs, each one 16-bit addressable. */ | |
4535 | ||
4536 | static bfd_boolean | |
9719ad41 | 4537 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4538 | asection *got, bfd_size_type pages) |
f4416af6 | 4539 | { |
a8028dd0 | 4540 | struct mips_elf_link_hash_table *htab; |
f4416af6 | 4541 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
ab361d49 | 4542 | struct mips_elf_traverse_got_arg tga; |
a8028dd0 | 4543 | struct mips_got_info *g, *gg; |
33bb52fb | 4544 | unsigned int assign, needed_relocs; |
d7206569 | 4545 | bfd *dynobj, *ibfd; |
f4416af6 | 4546 | |
33bb52fb | 4547 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4548 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4549 | BFD_ASSERT (htab != NULL); |
4550 | ||
a8028dd0 | 4551 | g = htab->got_info; |
f4416af6 | 4552 | |
f4416af6 AO |
4553 | got_per_bfd_arg.obfd = abfd; |
4554 | got_per_bfd_arg.info = info; | |
f4416af6 AO |
4555 | got_per_bfd_arg.current = NULL; |
4556 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4557 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4558 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4559 | - htab->reserved_gotno); |
c224138d | 4560 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 | 4561 | /* The number of globals that will be included in the primary GOT. |
ab361d49 | 4562 | See the calls to mips_elf_set_global_got_area below for more |
0f20cc35 DJ |
4563 | information. */ |
4564 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4565 | |
4566 | /* Try to merge the GOTs of input bfds together, as long as they | |
4567 | don't seem to exceed the maximum GOT size, choosing one of them | |
4568 | to be the primary GOT. */ | |
d7206569 RS |
4569 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next) |
4570 | { | |
4571 | gg = mips_elf_bfd_got (ibfd, FALSE); | |
4572 | if (gg && !mips_elf_merge_got (ibfd, gg, &got_per_bfd_arg)) | |
4573 | return FALSE; | |
4574 | } | |
f4416af6 | 4575 | |
0f20cc35 | 4576 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 | 4577 | if (got_per_bfd_arg.primary == NULL) |
3dff0dd1 | 4578 | g->next = mips_elf_create_got_info (abfd); |
f4416af6 AO |
4579 | else |
4580 | g->next = got_per_bfd_arg.primary; | |
4581 | g->next->next = got_per_bfd_arg.current; | |
4582 | ||
4583 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4584 | gg = g; | |
4585 | g = g->next; | |
4586 | ||
4587 | /* Map the output bfd to the primary got. That's what we're going | |
4588 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4589 | didn't mark in check_relocs, and we want a quick way to find it. | |
4590 | We can't just use gg->next because we're going to reverse the | |
4591 | list. */ | |
d7206569 | 4592 | mips_elf_replace_bfd_got (abfd, g); |
f4416af6 | 4593 | |
634835ae RS |
4594 | /* Every symbol that is referenced in a dynamic relocation must be |
4595 | present in the primary GOT, so arrange for them to appear after | |
4596 | those that are actually referenced. */ | |
23cc69b6 | 4597 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4598 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4599 | |
ab361d49 RS |
4600 | tga.info = info; |
4601 | tga.value = GGA_RELOC_ONLY; | |
4602 | htab_traverse (gg->got_entries, mips_elf_set_global_got_area, &tga); | |
4603 | tga.value = GGA_NORMAL; | |
4604 | htab_traverse (g->got_entries, mips_elf_set_global_got_area, &tga); | |
f4416af6 AO |
4605 | |
4606 | /* Now go through the GOTs assigning them offset ranges. | |
4607 | [assigned_gotno, local_gotno[ will be set to the range of local | |
4608 | entries in each GOT. We can then compute the end of a GOT by | |
4609 | adding local_gotno to global_gotno. We reverse the list and make | |
4610 | it circular since then we'll be able to quickly compute the | |
4611 | beginning of a GOT, by computing the end of its predecessor. To | |
4612 | avoid special cases for the primary GOT, while still preserving | |
4613 | assertions that are valid for both single- and multi-got links, | |
4614 | we arrange for the main got struct to have the right number of | |
4615 | global entries, but set its local_gotno such that the initial | |
4616 | offset of the primary GOT is zero. Remember that the primary GOT | |
4617 | will become the last item in the circular linked list, so it | |
4618 | points back to the master GOT. */ | |
4619 | gg->local_gotno = -g->global_gotno; | |
4620 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4621 | gg->tls_gotno = 0; |
f4416af6 AO |
4622 | assign = 0; |
4623 | gg->next = gg; | |
4624 | ||
4625 | do | |
4626 | { | |
4627 | struct mips_got_info *gn; | |
4628 | ||
861fb55a | 4629 | assign += htab->reserved_gotno; |
f4416af6 | 4630 | g->assigned_gotno = assign; |
c224138d RS |
4631 | g->local_gotno += assign; |
4632 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
4633 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4634 | ||
ead49a57 RS |
4635 | /* Take g out of the direct list, and push it onto the reversed |
4636 | list that gg points to. g->next is guaranteed to be nonnull after | |
4637 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4638 | gn = g->next; | |
4639 | g->next = gg->next; | |
4640 | gg->next = g; | |
4641 | ||
0f20cc35 DJ |
4642 | /* Set up any TLS entries. We always place the TLS entries after |
4643 | all non-TLS entries. */ | |
4644 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
72e7511a RS |
4645 | tga.g = g; |
4646 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4647 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
4648 | if (!tga.g) | |
4649 | return FALSE; | |
1fd20d70 | 4650 | BFD_ASSERT (g->tls_assigned_gotno == assign); |
f4416af6 | 4651 | |
ead49a57 | 4652 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4653 | g = gn; |
0626d451 | 4654 | |
33bb52fb RS |
4655 | /* Forbid global symbols in every non-primary GOT from having |
4656 | lazy-binding stubs. */ | |
0626d451 | 4657 | if (g) |
33bb52fb | 4658 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4659 | } |
4660 | while (g); | |
4661 | ||
59b08994 | 4662 | got->size = assign * MIPS_ELF_GOT_SIZE (abfd); |
33bb52fb RS |
4663 | |
4664 | needed_relocs = 0; | |
33bb52fb RS |
4665 | for (g = gg->next; g && g->next != gg; g = g->next) |
4666 | { | |
4667 | unsigned int save_assign; | |
4668 | ||
ab361d49 RS |
4669 | /* Assign offsets to global GOT entries and count how many |
4670 | relocations they need. */ | |
33bb52fb RS |
4671 | save_assign = g->assigned_gotno; |
4672 | g->assigned_gotno = g->local_gotno; | |
ab361d49 RS |
4673 | tga.info = info; |
4674 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
4675 | tga.g = g; | |
4676 | htab_traverse (g->got_entries, mips_elf_set_global_gotidx, &tga); | |
72e7511a RS |
4677 | if (!tga.g) |
4678 | return FALSE; | |
4679 | BFD_ASSERT (g->assigned_gotno == g->local_gotno + g->global_gotno); | |
33bb52fb | 4680 | g->assigned_gotno = save_assign; |
72e7511a | 4681 | |
33bb52fb RS |
4682 | if (info->shared) |
4683 | { | |
ab361d49 | 4684 | g->relocs += g->local_gotno - g->assigned_gotno; |
33bb52fb RS |
4685 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno |
4686 | + g->next->global_gotno | |
4687 | + g->next->tls_gotno | |
861fb55a | 4688 | + htab->reserved_gotno); |
33bb52fb | 4689 | } |
ab361d49 | 4690 | needed_relocs += g->relocs; |
33bb52fb | 4691 | } |
ab361d49 | 4692 | needed_relocs += g->relocs; |
33bb52fb RS |
4693 | |
4694 | if (needed_relocs) | |
4695 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4696 | needed_relocs); | |
143d77c5 | 4697 | |
f4416af6 AO |
4698 | return TRUE; |
4699 | } | |
143d77c5 | 4700 | |
b49e97c9 TS |
4701 | \f |
4702 | /* Returns the first relocation of type r_type found, beginning with | |
4703 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4704 | ||
4705 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4706 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4707 | const Elf_Internal_Rela *relocation, | |
4708 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4709 | { |
c000e262 TS |
4710 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4711 | ||
b49e97c9 TS |
4712 | while (relocation < relend) |
4713 | { | |
c000e262 TS |
4714 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4715 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4716 | return relocation; |
4717 | ||
4718 | ++relocation; | |
4719 | } | |
4720 | ||
4721 | /* We didn't find it. */ | |
b49e97c9 TS |
4722 | return NULL; |
4723 | } | |
4724 | ||
020d7251 | 4725 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 4726 | |
b34976b6 | 4727 | static bfd_boolean |
9719ad41 RS |
4728 | mips_elf_local_relocation_p (bfd *input_bfd, |
4729 | const Elf_Internal_Rela *relocation, | |
020d7251 | 4730 | asection **local_sections) |
b49e97c9 TS |
4731 | { |
4732 | unsigned long r_symndx; | |
4733 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
4734 | size_t extsymoff; |
4735 | ||
4736 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4737 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4738 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
4739 | ||
4740 | if (r_symndx < extsymoff) | |
b34976b6 | 4741 | return TRUE; |
b49e97c9 | 4742 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 4743 | return TRUE; |
b49e97c9 | 4744 | |
b34976b6 | 4745 | return FALSE; |
b49e97c9 TS |
4746 | } |
4747 | \f | |
4748 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4749 | ||
a7ebbfdf | 4750 | bfd_vma |
9719ad41 | 4751 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4752 | { |
4753 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4754 | /* VALUE is negative. */ | |
4755 | value |= ((bfd_vma) - 1) << bits; | |
4756 | ||
4757 | return value; | |
4758 | } | |
4759 | ||
4760 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4761 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4762 | BITS. */ |
4763 | ||
b34976b6 | 4764 | static bfd_boolean |
9719ad41 | 4765 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4766 | { |
4767 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4768 | ||
4769 | if (svalue > (1 << (bits - 1)) - 1) | |
4770 | /* The value is too big. */ | |
b34976b6 | 4771 | return TRUE; |
b49e97c9 TS |
4772 | else if (svalue < -(1 << (bits - 1))) |
4773 | /* The value is too small. */ | |
b34976b6 | 4774 | return TRUE; |
b49e97c9 TS |
4775 | |
4776 | /* All is well. */ | |
b34976b6 | 4777 | return FALSE; |
b49e97c9 TS |
4778 | } |
4779 | ||
4780 | /* Calculate the %high function. */ | |
4781 | ||
4782 | static bfd_vma | |
9719ad41 | 4783 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4784 | { |
4785 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4786 | } | |
4787 | ||
4788 | /* Calculate the %higher function. */ | |
4789 | ||
4790 | static bfd_vma | |
9719ad41 | 4791 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4792 | { |
4793 | #ifdef BFD64 | |
4794 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4795 | #else | |
4796 | abort (); | |
c5ae1840 | 4797 | return MINUS_ONE; |
b49e97c9 TS |
4798 | #endif |
4799 | } | |
4800 | ||
4801 | /* Calculate the %highest function. */ | |
4802 | ||
4803 | static bfd_vma | |
9719ad41 | 4804 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4805 | { |
4806 | #ifdef BFD64 | |
b15e6682 | 4807 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4808 | #else |
4809 | abort (); | |
c5ae1840 | 4810 | return MINUS_ONE; |
b49e97c9 TS |
4811 | #endif |
4812 | } | |
4813 | \f | |
4814 | /* Create the .compact_rel section. */ | |
4815 | ||
b34976b6 | 4816 | static bfd_boolean |
9719ad41 RS |
4817 | mips_elf_create_compact_rel_section |
4818 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4819 | { |
4820 | flagword flags; | |
4821 | register asection *s; | |
4822 | ||
3d4d4302 | 4823 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
4824 | { |
4825 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4826 | | SEC_READONLY); | |
4827 | ||
3d4d4302 | 4828 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4829 | if (s == NULL |
b49e97c9 TS |
4830 | || ! bfd_set_section_alignment (abfd, s, |
4831 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4832 | return FALSE; |
b49e97c9 | 4833 | |
eea6121a | 4834 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4835 | } |
4836 | ||
b34976b6 | 4837 | return TRUE; |
b49e97c9 TS |
4838 | } |
4839 | ||
4840 | /* Create the .got section to hold the global offset table. */ | |
4841 | ||
b34976b6 | 4842 | static bfd_boolean |
23cc69b6 | 4843 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
4844 | { |
4845 | flagword flags; | |
4846 | register asection *s; | |
4847 | struct elf_link_hash_entry *h; | |
14a793b2 | 4848 | struct bfd_link_hash_entry *bh; |
0a44bf69 RS |
4849 | struct mips_elf_link_hash_table *htab; |
4850 | ||
4851 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 4852 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
4853 | |
4854 | /* This function may be called more than once. */ | |
23cc69b6 RS |
4855 | if (htab->sgot) |
4856 | return TRUE; | |
b49e97c9 TS |
4857 | |
4858 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4859 | | SEC_LINKER_CREATED); | |
4860 | ||
72b4917c TS |
4861 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4862 | in the function stub generation and in the linker script. */ | |
87e0a731 | 4863 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 4864 | if (s == NULL |
72b4917c | 4865 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4866 | return FALSE; |
a8028dd0 | 4867 | htab->sgot = s; |
b49e97c9 TS |
4868 | |
4869 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4870 | linker script because we don't want to define the symbol if we | |
4871 | are not creating a global offset table. */ | |
14a793b2 | 4872 | bh = NULL; |
b49e97c9 TS |
4873 | if (! (_bfd_generic_link_add_one_symbol |
4874 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4875 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4876 | return FALSE; |
14a793b2 AM |
4877 | |
4878 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4879 | h->non_elf = 0; |
4880 | h->def_regular = 1; | |
b49e97c9 | 4881 | h->type = STT_OBJECT; |
d329bcd1 | 4882 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4883 | |
4884 | if (info->shared | |
c152c796 | 4885 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4886 | return FALSE; |
b49e97c9 | 4887 | |
3dff0dd1 | 4888 | htab->got_info = mips_elf_create_got_info (abfd); |
f0abc2a1 | 4889 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
4890 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4891 | ||
861fb55a | 4892 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
4893 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
4894 | SEC_ALLOC | SEC_LOAD | |
4895 | | SEC_HAS_CONTENTS | |
4896 | | SEC_IN_MEMORY | |
4897 | | SEC_LINKER_CREATED); | |
861fb55a DJ |
4898 | if (s == NULL) |
4899 | return FALSE; | |
4900 | htab->sgotplt = s; | |
0a44bf69 | 4901 | |
b34976b6 | 4902 | return TRUE; |
b49e97c9 | 4903 | } |
b49e97c9 | 4904 | \f |
0a44bf69 RS |
4905 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4906 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4907 | shared objects; they are not used in executables. */ | |
4908 | ||
4909 | static bfd_boolean | |
4910 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4911 | { | |
4912 | return (mips_elf_hash_table (info)->is_vxworks | |
4913 | && info->shared | |
4914 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4915 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4916 | } | |
861fb55a DJ |
4917 | |
4918 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
4919 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
4920 | which determines whether the destination function ever requires a | |
4921 | stub. */ | |
4922 | ||
4923 | static bfd_boolean | |
8f0c309a CLT |
4924 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
4925 | bfd_boolean target_is_16_bit_code_p) | |
861fb55a DJ |
4926 | { |
4927 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
4928 | where the onus is on the compiler or programmer to perform any | |
4929 | necessary initialization of $25. Sometimes such initialization | |
4930 | is unnecessary; for example, -mno-shared functions do not use | |
4931 | the incoming value of $25, and may therefore be called directly. */ | |
4932 | if (PIC_OBJECT_P (input_bfd)) | |
4933 | return FALSE; | |
4934 | ||
4935 | switch (r_type) | |
4936 | { | |
4937 | case R_MIPS_26: | |
4938 | case R_MIPS_PC16: | |
df58fc94 RS |
4939 | case R_MICROMIPS_26_S1: |
4940 | case R_MICROMIPS_PC7_S1: | |
4941 | case R_MICROMIPS_PC10_S1: | |
4942 | case R_MICROMIPS_PC16_S1: | |
4943 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
4944 | return TRUE; |
4945 | ||
8f0c309a CLT |
4946 | case R_MIPS16_26: |
4947 | return !target_is_16_bit_code_p; | |
4948 | ||
861fb55a DJ |
4949 | default: |
4950 | return FALSE; | |
4951 | } | |
4952 | } | |
0a44bf69 | 4953 | \f |
b49e97c9 TS |
4954 | /* Calculate the value produced by the RELOCATION (which comes from |
4955 | the INPUT_BFD). The ADDEND is the addend to use for this | |
4956 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
4957 | ||
4958 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 4959 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 4960 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
4961 | |
4962 | This function returns bfd_reloc_continue if the caller need take no | |
4963 | further action regarding this relocation, bfd_reloc_notsupported if | |
4964 | something goes dramatically wrong, bfd_reloc_overflow if an | |
4965 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
4966 | ||
4967 | static bfd_reloc_status_type | |
9719ad41 RS |
4968 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
4969 | asection *input_section, | |
4970 | struct bfd_link_info *info, | |
4971 | const Elf_Internal_Rela *relocation, | |
4972 | bfd_vma addend, reloc_howto_type *howto, | |
4973 | Elf_Internal_Sym *local_syms, | |
4974 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
4975 | const char **namep, |
4976 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 4977 | bfd_boolean save_addend) |
b49e97c9 TS |
4978 | { |
4979 | /* The eventual value we will return. */ | |
4980 | bfd_vma value; | |
4981 | /* The address of the symbol against which the relocation is | |
4982 | occurring. */ | |
4983 | bfd_vma symbol = 0; | |
4984 | /* The final GP value to be used for the relocatable, executable, or | |
4985 | shared object file being produced. */ | |
0a61c8c2 | 4986 | bfd_vma gp; |
b49e97c9 TS |
4987 | /* The place (section offset or address) of the storage unit being |
4988 | relocated. */ | |
4989 | bfd_vma p; | |
4990 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 4991 | bfd_vma gp0; |
b49e97c9 TS |
4992 | /* The offset into the global offset table at which the address of |
4993 | the relocation entry symbol, adjusted by the addend, resides | |
4994 | during execution. */ | |
4995 | bfd_vma g = MINUS_ONE; | |
4996 | /* The section in which the symbol referenced by the relocation is | |
4997 | located. */ | |
4998 | asection *sec = NULL; | |
4999 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5000 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5001 | symbol. */ |
b34976b6 AM |
5002 | bfd_boolean local_p, was_local_p; |
5003 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
5004 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
5005 | /* TRUE if the symbol referred to by this relocation is |
5006 | "__gnu_local_gp". */ | |
5007 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
5008 | Elf_Internal_Shdr *symtab_hdr; |
5009 | size_t extsymoff; | |
5010 | unsigned long r_symndx; | |
5011 | int r_type; | |
b34976b6 | 5012 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5013 | relocation value. */ |
b34976b6 AM |
5014 | bfd_boolean overflowed_p; |
5015 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
5016 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
df58fc94 | 5017 | bfd_boolean target_is_micromips_code_p = FALSE; |
0a44bf69 RS |
5018 | struct mips_elf_link_hash_table *htab; |
5019 | bfd *dynobj; | |
5020 | ||
5021 | dynobj = elf_hash_table (info)->dynobj; | |
5022 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5023 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5024 | |
5025 | /* Parse the relocation. */ | |
5026 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5027 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5028 | p = (input_section->output_section->vma | |
5029 | + input_section->output_offset | |
5030 | + relocation->r_offset); | |
5031 | ||
5032 | /* Assume that there will be no overflow. */ | |
b34976b6 | 5033 | overflowed_p = FALSE; |
b49e97c9 TS |
5034 | |
5035 | /* Figure out whether or not the symbol is local, and get the offset | |
5036 | used in the array of hash table entries. */ | |
5037 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5038 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5039 | local_sections); |
bce03d3d | 5040 | was_local_p = local_p; |
b49e97c9 TS |
5041 | if (! elf_bad_symtab (input_bfd)) |
5042 | extsymoff = symtab_hdr->sh_info; | |
5043 | else | |
5044 | { | |
5045 | /* The symbol table does not follow the rule that local symbols | |
5046 | must come before globals. */ | |
5047 | extsymoff = 0; | |
5048 | } | |
5049 | ||
5050 | /* Figure out the value of the symbol. */ | |
5051 | if (local_p) | |
5052 | { | |
5053 | Elf_Internal_Sym *sym; | |
5054 | ||
5055 | sym = local_syms + r_symndx; | |
5056 | sec = local_sections[r_symndx]; | |
5057 | ||
5058 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
5059 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
5060 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 5061 | symbol += sym->st_value; |
d4df96e6 L |
5062 | if ((sec->flags & SEC_MERGE) |
5063 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
5064 | { | |
5065 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5066 | addend -= symbol; | |
5067 | addend += sec->output_section->vma + sec->output_offset; | |
5068 | } | |
b49e97c9 | 5069 | |
df58fc94 RS |
5070 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5071 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5072 | ++symbol; |
5073 | ||
5074 | /* Record the name of this symbol, for our caller. */ | |
5075 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5076 | symtab_hdr->sh_link, | |
5077 | sym->st_name); | |
5078 | if (*namep == '\0') | |
5079 | *namep = bfd_section_name (input_bfd, sec); | |
5080 | ||
30c09090 | 5081 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
df58fc94 | 5082 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); |
b49e97c9 TS |
5083 | } |
5084 | else | |
5085 | { | |
560e09e9 NC |
5086 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5087 | ||
b49e97c9 TS |
5088 | /* For global symbols we look up the symbol in the hash-table. */ |
5089 | h = ((struct mips_elf_link_hash_entry *) | |
5090 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5091 | /* Find the real hash-table entry for this symbol. */ | |
5092 | while (h->root.root.type == bfd_link_hash_indirect | |
5093 | || h->root.root.type == bfd_link_hash_warning) | |
5094 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5095 | ||
5096 | /* Record the name of this symbol, for our caller. */ | |
5097 | *namep = h->root.root.root.string; | |
5098 | ||
5099 | /* See if this is the special _gp_disp symbol. Note that such a | |
5100 | symbol must always be a global symbol. */ | |
560e09e9 | 5101 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5102 | && ! NEWABI_P (input_bfd)) |
5103 | { | |
5104 | /* Relocations against _gp_disp are permitted only with | |
5105 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5106 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5107 | return bfd_reloc_notsupported; |
5108 | ||
b34976b6 | 5109 | gp_disp_p = TRUE; |
b49e97c9 | 5110 | } |
bbe506e8 TS |
5111 | /* See if this is the special _gp symbol. Note that such a |
5112 | symbol must always be a global symbol. */ | |
5113 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
5114 | gnu_local_gp_p = TRUE; | |
5115 | ||
5116 | ||
b49e97c9 TS |
5117 | /* If this symbol is defined, calculate its address. Note that |
5118 | _gp_disp is a magic symbol, always implicitly defined by the | |
5119 | linker, so it's inappropriate to check to see whether or not | |
5120 | its defined. */ | |
5121 | else if ((h->root.root.type == bfd_link_hash_defined | |
5122 | || h->root.root.type == bfd_link_hash_defweak) | |
5123 | && h->root.root.u.def.section) | |
5124 | { | |
5125 | sec = h->root.root.u.def.section; | |
5126 | if (sec->output_section) | |
5127 | symbol = (h->root.root.u.def.value | |
5128 | + sec->output_section->vma | |
5129 | + sec->output_offset); | |
5130 | else | |
5131 | symbol = h->root.root.u.def.value; | |
5132 | } | |
5133 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5134 | /* We allow relocations against undefined weak symbols, giving | |
5135 | it the value zero, so that you can undefined weak functions | |
5136 | and check to see if they exist by looking at their | |
5137 | addresses. */ | |
5138 | symbol = 0; | |
59c2e50f | 5139 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5140 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5141 | symbol = 0; | |
a4d0f181 TS |
5142 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5143 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5144 | { |
5145 | /* If this is a dynamic link, we should have created a | |
5146 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
5147 | in in _bfd_mips_elf_create_dynamic_sections. | |
5148 | Otherwise, we should define the symbol with a value of 0. | |
5149 | FIXME: It should probably get into the symbol table | |
5150 | somehow as well. */ | |
5151 | BFD_ASSERT (! info->shared); | |
5152 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
5153 | symbol = 0; | |
5154 | } | |
5e2b0d47 NC |
5155 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5156 | { | |
5157 | /* This is an optional symbol - an Irix specific extension to the | |
5158 | ELF spec. Ignore it for now. | |
5159 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5160 | than simply ignoring them, but we do not handle this for now. | |
5161 | For information see the "64-bit ELF Object File Specification" | |
5162 | which is available from here: | |
5163 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5164 | symbol = 0; | |
5165 | } | |
e7e2196d MR |
5166 | else if ((*info->callbacks->undefined_symbol) |
5167 | (info, h->root.root.root.string, input_bfd, | |
5168 | input_section, relocation->r_offset, | |
5169 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) | |
5170 | || ELF_ST_VISIBILITY (h->root.other))) | |
5171 | { | |
5172 | return bfd_reloc_undefined; | |
5173 | } | |
b49e97c9 TS |
5174 | else |
5175 | { | |
e7e2196d | 5176 | return bfd_reloc_notsupported; |
b49e97c9 TS |
5177 | } |
5178 | ||
30c09090 | 5179 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
df58fc94 RS |
5180 | /* If the output section is the PLT section, |
5181 | then the target is not microMIPS. */ | |
5182 | target_is_micromips_code_p = (htab->splt != sec | |
5183 | && ELF_ST_IS_MICROMIPS (h->root.other)); | |
b49e97c9 TS |
5184 | } |
5185 | ||
738e5348 RS |
5186 | /* If this is a reference to a 16-bit function with a stub, we need |
5187 | to redirect the relocation to the stub unless: | |
5188 | ||
5189 | (a) the relocation is for a MIPS16 JAL; | |
5190 | ||
5191 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5192 | non-MIPS16 uses of the GOT slot; or | |
5193 | ||
5194 | (c) the section allows direct references to MIPS16 functions. */ | |
5195 | if (r_type != R_MIPS16_26 | |
5196 | && !info->relocatable | |
5197 | && ((h != NULL | |
5198 | && h->fn_stub != NULL | |
5199 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 | 5200 | || (local_p |
698600e4 AM |
5201 | && mips_elf_tdata (input_bfd)->local_stubs != NULL |
5202 | && mips_elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
738e5348 | 5203 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5204 | { |
5205 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5206 | have already noticed that we were going to need the | |
5207 | stub. */ | |
5208 | if (local_p) | |
8f0c309a | 5209 | { |
698600e4 | 5210 | sec = mips_elf_tdata (input_bfd)->local_stubs[r_symndx]; |
8f0c309a CLT |
5211 | value = 0; |
5212 | } | |
b49e97c9 TS |
5213 | else |
5214 | { | |
5215 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5216 | if (h->la25_stub) |
5217 | { | |
5218 | /* If a LA25 header for the stub itself exists, point to the | |
5219 | prepended LUI/ADDIU sequence. */ | |
5220 | sec = h->la25_stub->stub_section; | |
5221 | value = h->la25_stub->offset; | |
5222 | } | |
5223 | else | |
5224 | { | |
5225 | sec = h->fn_stub; | |
5226 | value = 0; | |
5227 | } | |
b49e97c9 TS |
5228 | } |
5229 | ||
8f0c309a | 5230 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 TS |
5231 | /* The target is 16-bit, but the stub isn't. */ |
5232 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
5233 | } |
5234 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
5235 | need to redirect the call to the stub. Note that we specifically |
5236 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
5237 | use an indirect stub instead. */ | |
1049f94e | 5238 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 5239 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 | 5240 | || (local_p |
698600e4 AM |
5241 | && mips_elf_tdata (input_bfd)->local_call_stubs != NULL |
5242 | && mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
5243 | && !target_is_16_bit_code_p) |
5244 | { | |
b9d58d71 | 5245 | if (local_p) |
698600e4 | 5246 | sec = mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx]; |
b9d58d71 | 5247 | else |
b49e97c9 | 5248 | { |
b9d58d71 TS |
5249 | /* If both call_stub and call_fp_stub are defined, we can figure |
5250 | out which one to use by checking which one appears in the input | |
5251 | file. */ | |
5252 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5253 | { |
b9d58d71 | 5254 | asection *o; |
68ffbac6 | 5255 | |
b9d58d71 TS |
5256 | sec = NULL; |
5257 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5258 | { |
b9d58d71 TS |
5259 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5260 | { | |
5261 | sec = h->call_fp_stub; | |
5262 | break; | |
5263 | } | |
b49e97c9 | 5264 | } |
b9d58d71 TS |
5265 | if (sec == NULL) |
5266 | sec = h->call_stub; | |
b49e97c9 | 5267 | } |
b9d58d71 | 5268 | else if (h->call_stub != NULL) |
b49e97c9 | 5269 | sec = h->call_stub; |
b9d58d71 TS |
5270 | else |
5271 | sec = h->call_fp_stub; | |
5272 | } | |
b49e97c9 | 5273 | |
eea6121a | 5274 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5275 | symbol = sec->output_section->vma + sec->output_offset; |
5276 | } | |
861fb55a DJ |
5277 | /* If this is a direct call to a PIC function, redirect to the |
5278 | non-PIC stub. */ | |
5279 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5280 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5281 | target_is_16_bit_code_p)) | |
861fb55a DJ |
5282 | symbol = (h->la25_stub->stub_section->output_section->vma |
5283 | + h->la25_stub->stub_section->output_offset | |
5284 | + h->la25_stub->offset); | |
b49e97c9 | 5285 | |
df58fc94 RS |
5286 | /* Make sure MIPS16 and microMIPS are not used together. */ |
5287 | if ((r_type == R_MIPS16_26 && target_is_micromips_code_p) | |
5288 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) | |
5289 | { | |
5290 | (*_bfd_error_handler) | |
5291 | (_("MIPS16 and microMIPS functions cannot call each other")); | |
5292 | return bfd_reloc_notsupported; | |
5293 | } | |
5294 | ||
b49e97c9 | 5295 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5296 | mode change. However, we can ignore calls to undefined weak symbols, |
5297 | which should never be executed at runtime. This exception is important | |
5298 | because the assembly writer may have "known" that any definition of the | |
5299 | symbol would be 16-bit code, and that direct jumps were therefore | |
5300 | acceptable. */ | |
5301 | *cross_mode_jump_p = (!info->relocatable | |
5302 | && !(h && h->root.root.type == bfd_link_hash_undefweak) | |
5303 | && ((r_type == R_MIPS16_26 && !target_is_16_bit_code_p) | |
5304 | || (r_type == R_MICROMIPS_26_S1 | |
5305 | && !target_is_micromips_code_p) | |
5306 | || ((r_type == R_MIPS_26 || r_type == R_MIPS_JALR) | |
5307 | && (target_is_16_bit_code_p | |
5308 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5309 | |
9f1a453e MR |
5310 | local_p = (h == NULL |
5311 | || (h->got_only_for_calls | |
5312 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
5313 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))); | |
b49e97c9 | 5314 | |
0a61c8c2 RS |
5315 | gp0 = _bfd_get_gp_value (input_bfd); |
5316 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5317 | if (htab->got_info) |
a8028dd0 | 5318 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5319 | |
5320 | if (gnu_local_gp_p) | |
5321 | symbol = gp; | |
5322 | ||
df58fc94 RS |
5323 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5324 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5325 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5326 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5327 | { |
df58fc94 RS |
5328 | r_type = (micromips_reloc_p (r_type) |
5329 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5330 | addend = 0; |
5331 | } | |
5332 | ||
e77760d2 | 5333 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5334 | to need it, get it now. */ |
b49e97c9 TS |
5335 | switch (r_type) |
5336 | { | |
738e5348 RS |
5337 | case R_MIPS16_CALL16: |
5338 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5339 | case R_MIPS_CALL16: |
5340 | case R_MIPS_GOT16: | |
5341 | case R_MIPS_GOT_DISP: | |
5342 | case R_MIPS_GOT_HI16: | |
5343 | case R_MIPS_CALL_HI16: | |
5344 | case R_MIPS_GOT_LO16: | |
5345 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5346 | case R_MICROMIPS_CALL16: |
5347 | case R_MICROMIPS_GOT16: | |
5348 | case R_MICROMIPS_GOT_DISP: | |
5349 | case R_MICROMIPS_GOT_HI16: | |
5350 | case R_MICROMIPS_CALL_HI16: | |
5351 | case R_MICROMIPS_GOT_LO16: | |
5352 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5353 | case R_MIPS_TLS_GD: |
5354 | case R_MIPS_TLS_GOTTPREL: | |
5355 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5356 | case R_MIPS16_TLS_GD: |
5357 | case R_MIPS16_TLS_GOTTPREL: | |
5358 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5359 | case R_MICROMIPS_TLS_GD: |
5360 | case R_MICROMIPS_TLS_GOTTPREL: | |
5361 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5362 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5363 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5364 | { |
0a44bf69 | 5365 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5366 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5367 | if (g == MINUS_ONE) |
5368 | return bfd_reloc_outofrange; | |
5369 | } | |
5370 | else if (!local_p) | |
b49e97c9 | 5371 | { |
0a44bf69 RS |
5372 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5373 | entry, which is initialized to point at the PLT stub. */ | |
5374 | if (htab->is_vxworks | |
df58fc94 RS |
5375 | && (call_hi16_reloc_p (r_type) |
5376 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5377 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5378 | { |
5379 | BFD_ASSERT (addend == 0); | |
5380 | BFD_ASSERT (h->root.needs_plt); | |
5381 | g = mips_elf_gotplt_index (info, &h->root); | |
5382 | } | |
5383 | else | |
b49e97c9 | 5384 | { |
020d7251 | 5385 | BFD_ASSERT (addend == 0); |
13fbec83 RS |
5386 | g = mips_elf_global_got_index (abfd, info, input_bfd, |
5387 | &h->root, r_type); | |
e641e783 | 5388 | if (!TLS_RELOC_P (r_type) |
020d7251 RS |
5389 | && !elf_hash_table (info)->dynamic_sections_created) |
5390 | /* This is a static link. We must initialize the GOT entry. */ | |
a8028dd0 | 5391 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->sgot->contents + g); |
b49e97c9 TS |
5392 | } |
5393 | } | |
0a44bf69 | 5394 | else if (!htab->is_vxworks |
738e5348 | 5395 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5396 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5397 | break; |
5398 | else | |
5399 | { | |
5c18022e | 5400 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5401 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5402 | if (g == MINUS_ONE) |
5403 | return bfd_reloc_outofrange; | |
5404 | } | |
5405 | ||
5406 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5407 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5408 | break; |
b49e97c9 TS |
5409 | } |
5410 | ||
0a44bf69 RS |
5411 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5412 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5413 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5414 | { | |
5415 | Elf_Internal_Rela outrel; | |
5416 | bfd_byte *loc; | |
5417 | asection *s; | |
5418 | ||
5419 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5420 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5421 | ||
5422 | outrel.r_offset = (input_section->output_section->vma | |
5423 | + input_section->output_offset | |
5424 | + relocation->r_offset); | |
5425 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5426 | outrel.r_addend = addend; | |
5427 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5428 | |
5429 | /* If we've written this relocation for a readonly section, | |
5430 | we need to set DF_TEXTREL again, so that we do not delete the | |
5431 | DT_TEXTREL tag. */ | |
5432 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5433 | info->flags |= DF_TEXTREL; | |
5434 | ||
0a44bf69 RS |
5435 | *valuep = 0; |
5436 | return bfd_reloc_ok; | |
5437 | } | |
5438 | ||
b49e97c9 TS |
5439 | /* Figure out what kind of relocation is being performed. */ |
5440 | switch (r_type) | |
5441 | { | |
5442 | case R_MIPS_NONE: | |
5443 | return bfd_reloc_continue; | |
5444 | ||
5445 | case R_MIPS_16: | |
a7ebbfdf | 5446 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
5447 | overflowed_p = mips_elf_overflow_p (value, 16); |
5448 | break; | |
5449 | ||
5450 | case R_MIPS_32: | |
5451 | case R_MIPS_REL32: | |
5452 | case R_MIPS_64: | |
5453 | if ((info->shared | |
861fb55a | 5454 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5455 | && h != NULL |
f5385ebf | 5456 | && h->root.def_dynamic |
861fb55a DJ |
5457 | && !h->root.def_regular |
5458 | && !h->has_static_relocs)) | |
cf35638d | 5459 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
5460 | && (h == NULL |
5461 | || h->root.root.type != bfd_link_hash_undefweak | |
5462 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
5463 | && (input_section->flags & SEC_ALLOC) != 0) |
5464 | { | |
861fb55a | 5465 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5466 | where the symbol will end up. So, we create a relocation |
5467 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5468 | linker. We must do the same for executable references to |
5469 | shared library symbols, unless we've decided to use copy | |
5470 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5471 | value = addend; |
5472 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5473 | info, | |
5474 | relocation, | |
5475 | h, | |
5476 | sec, | |
5477 | symbol, | |
5478 | &value, | |
5479 | input_section)) | |
5480 | return bfd_reloc_undefined; | |
5481 | } | |
5482 | else | |
5483 | { | |
5484 | if (r_type != R_MIPS_REL32) | |
5485 | value = symbol + addend; | |
5486 | else | |
5487 | value = addend; | |
5488 | } | |
5489 | value &= howto->dst_mask; | |
092dcd75 CD |
5490 | break; |
5491 | ||
5492 | case R_MIPS_PC32: | |
5493 | value = symbol + addend - p; | |
5494 | value &= howto->dst_mask; | |
b49e97c9 TS |
5495 | break; |
5496 | ||
b49e97c9 TS |
5497 | case R_MIPS16_26: |
5498 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5499 | R_MIPS_26. It's only the storage of the relocated field into | |
5500 | the output file that's different. That's handled in | |
5501 | mips_elf_perform_relocation. So, we just fall through to the | |
5502 | R_MIPS_26 case here. */ | |
5503 | case R_MIPS_26: | |
df58fc94 RS |
5504 | case R_MICROMIPS_26_S1: |
5505 | { | |
5506 | unsigned int shift; | |
5507 | ||
5508 | /* Make sure the target of JALX is word-aligned. Bit 0 must be | |
5509 | the correct ISA mode selector and bit 1 must be 0. */ | |
5510 | if (*cross_mode_jump_p && (symbol & 3) != (r_type == R_MIPS_26)) | |
5511 | return bfd_reloc_outofrange; | |
5512 | ||
5513 | /* Shift is 2, unusually, for microMIPS JALX. */ | |
5514 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
5515 | ||
5516 | if (was_local_p) | |
5517 | value = addend | ((p + 4) & (0xfc000000 << shift)); | |
5518 | else | |
5519 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); | |
5520 | value = (value + symbol) >> shift; | |
5521 | if (!was_local_p && h->root.root.type != bfd_link_hash_undefweak) | |
5522 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); | |
5523 | value &= howto->dst_mask; | |
5524 | } | |
b49e97c9 TS |
5525 | break; |
5526 | ||
0f20cc35 | 5527 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 5528 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 5529 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
5530 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
5531 | & howto->dst_mask); | |
5532 | break; | |
5533 | ||
5534 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5535 | case R_MIPS_TLS_DTPREL32: |
5536 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 5537 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 5538 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
5539 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5540 | break; | |
5541 | ||
5542 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 5543 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 5544 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
5545 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
5546 | & howto->dst_mask); | |
5547 | break; | |
5548 | ||
5549 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
5550 | case R_MIPS_TLS_TPREL32: |
5551 | case R_MIPS_TLS_TPREL64: | |
5552 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 5553 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
5554 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
5555 | break; | |
5556 | ||
b49e97c9 | 5557 | case R_MIPS_HI16: |
d6f16593 | 5558 | case R_MIPS16_HI16: |
df58fc94 | 5559 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
5560 | if (!gp_disp_p) |
5561 | { | |
5562 | value = mips_elf_high (addend + symbol); | |
5563 | value &= howto->dst_mask; | |
5564 | } | |
5565 | else | |
5566 | { | |
d6f16593 MR |
5567 | /* For MIPS16 ABI code we generate this sequence |
5568 | 0: li $v0,%hi(_gp_disp) | |
5569 | 4: addiupc $v1,%lo(_gp_disp) | |
5570 | 8: sll $v0,16 | |
5571 | 12: addu $v0,$v1 | |
5572 | 14: move $gp,$v0 | |
5573 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
5574 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
5575 | ADDIUPC clears the low two bits of the instruction address, | |
5576 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 5577 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 5578 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
5579 | /* The microMIPS .cpload sequence uses the same assembly |
5580 | instructions as the traditional psABI version, but the | |
5581 | incoming $t9 has the low bit set. */ | |
5582 | else if (r_type == R_MICROMIPS_HI16) | |
5583 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
5584 | else |
5585 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5586 | overflowed_p = mips_elf_overflow_p (value, 16); |
5587 | } | |
5588 | break; | |
5589 | ||
5590 | case R_MIPS_LO16: | |
d6f16593 | 5591 | case R_MIPS16_LO16: |
df58fc94 RS |
5592 | case R_MICROMIPS_LO16: |
5593 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
5594 | if (!gp_disp_p) |
5595 | value = (symbol + addend) & howto->dst_mask; | |
5596 | else | |
5597 | { | |
d6f16593 MR |
5598 | /* See the comment for R_MIPS16_HI16 above for the reason |
5599 | for this conditional. */ | |
5600 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 5601 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
5602 | else if (r_type == R_MICROMIPS_LO16 |
5603 | || r_type == R_MICROMIPS_HI0_LO16) | |
5604 | value = addend + gp - p + 3; | |
d6f16593 MR |
5605 | else |
5606 | value = addend + gp - p + 4; | |
b49e97c9 | 5607 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5608 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5609 | _gp_disp are normally generated from the .cpload |
5610 | pseudo-op. It generates code that normally looks like | |
5611 | this: | |
5612 | ||
5613 | lui $gp,%hi(_gp_disp) | |
5614 | addiu $gp,$gp,%lo(_gp_disp) | |
5615 | addu $gp,$gp,$t9 | |
5616 | ||
5617 | Here $t9 holds the address of the function being called, | |
5618 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5619 | relocation can easily overflow in this situation, but the | |
5620 | R_MIPS_HI16 relocation will handle the overflow. | |
5621 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5622 | not check for overflow here. */ | |
5623 | } | |
5624 | break; | |
5625 | ||
5626 | case R_MIPS_LITERAL: | |
df58fc94 | 5627 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
5628 | /* Because we don't merge literal sections, we can handle this |
5629 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5630 | shared literals, and then we will need to additional work | |
5631 | here. */ | |
5632 | ||
5633 | /* Fall through. */ | |
5634 | ||
5635 | case R_MIPS16_GPREL: | |
5636 | /* The R_MIPS16_GPREL performs the same calculation as | |
5637 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5638 | order. We don't need to do anything special here; the | |
5639 | differences are handled in mips_elf_perform_relocation. */ | |
5640 | case R_MIPS_GPREL16: | |
df58fc94 RS |
5641 | case R_MICROMIPS_GPREL7_S2: |
5642 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
5643 | /* Only sign-extend the addend if it was extracted from the |
5644 | instruction. If the addend was separate, leave it alone, | |
5645 | otherwise we may lose significant bits. */ | |
5646 | if (howto->partial_inplace) | |
a7ebbfdf | 5647 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5648 | value = symbol + addend - gp; |
5649 | /* If the symbol was local, any earlier relocatable links will | |
5650 | have adjusted its addend with the gp offset, so compensate | |
5651 | for that now. Don't do it for symbols forced local in this | |
5652 | link, though, since they won't have had the gp offset applied | |
5653 | to them before. */ | |
5654 | if (was_local_p) | |
5655 | value += gp0; | |
b49e97c9 TS |
5656 | overflowed_p = mips_elf_overflow_p (value, 16); |
5657 | break; | |
5658 | ||
738e5348 RS |
5659 | case R_MIPS16_GOT16: |
5660 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
5661 | case R_MIPS_GOT16: |
5662 | case R_MIPS_CALL16: | |
df58fc94 RS |
5663 | case R_MICROMIPS_GOT16: |
5664 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 5665 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 5666 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 5667 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 5668 | { |
5c18022e | 5669 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 5670 | symbol + addend, !was_local_p); |
b49e97c9 TS |
5671 | if (value == MINUS_ONE) |
5672 | return bfd_reloc_outofrange; | |
5673 | value | |
a8028dd0 | 5674 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5675 | overflowed_p = mips_elf_overflow_p (value, 16); |
5676 | break; | |
5677 | } | |
5678 | ||
5679 | /* Fall through. */ | |
5680 | ||
0f20cc35 DJ |
5681 | case R_MIPS_TLS_GD: |
5682 | case R_MIPS_TLS_GOTTPREL: | |
5683 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5684 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
5685 | case R_MIPS16_TLS_GD: |
5686 | case R_MIPS16_TLS_GOTTPREL: | |
5687 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5688 | case R_MICROMIPS_TLS_GD: |
5689 | case R_MICROMIPS_TLS_GOTTPREL: | |
5690 | case R_MICROMIPS_TLS_LDM: | |
5691 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
5692 | value = g; |
5693 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5694 | break; | |
5695 | ||
5696 | case R_MIPS_GPREL32: | |
bce03d3d AO |
5697 | value = (addend + symbol + gp0 - gp); |
5698 | if (!save_addend) | |
5699 | value &= howto->dst_mask; | |
b49e97c9 TS |
5700 | break; |
5701 | ||
5702 | case R_MIPS_PC16: | |
bad36eac DJ |
5703 | case R_MIPS_GNU_REL16_S2: |
5704 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
5705 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
5706 | value >>= howto->rightshift; |
5707 | value &= howto->dst_mask; | |
b49e97c9 TS |
5708 | break; |
5709 | ||
df58fc94 RS |
5710 | case R_MICROMIPS_PC7_S1: |
5711 | value = symbol + _bfd_mips_elf_sign_extend (addend, 8) - p; | |
5712 | overflowed_p = mips_elf_overflow_p (value, 8); | |
5713 | value >>= howto->rightshift; | |
5714 | value &= howto->dst_mask; | |
5715 | break; | |
5716 | ||
5717 | case R_MICROMIPS_PC10_S1: | |
5718 | value = symbol + _bfd_mips_elf_sign_extend (addend, 11) - p; | |
5719 | overflowed_p = mips_elf_overflow_p (value, 11); | |
5720 | value >>= howto->rightshift; | |
5721 | value &= howto->dst_mask; | |
5722 | break; | |
5723 | ||
5724 | case R_MICROMIPS_PC16_S1: | |
5725 | value = symbol + _bfd_mips_elf_sign_extend (addend, 17) - p; | |
5726 | overflowed_p = mips_elf_overflow_p (value, 17); | |
5727 | value >>= howto->rightshift; | |
5728 | value &= howto->dst_mask; | |
5729 | break; | |
5730 | ||
5731 | case R_MICROMIPS_PC23_S2: | |
5732 | value = symbol + _bfd_mips_elf_sign_extend (addend, 25) - ((p | 3) ^ 3); | |
5733 | overflowed_p = mips_elf_overflow_p (value, 25); | |
5734 | value >>= howto->rightshift; | |
5735 | value &= howto->dst_mask; | |
5736 | break; | |
5737 | ||
b49e97c9 TS |
5738 | case R_MIPS_GOT_HI16: |
5739 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
5740 | case R_MICROMIPS_GOT_HI16: |
5741 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
5742 | /* We're allowed to handle these two relocations identically. |
5743 | The dynamic linker is allowed to handle the CALL relocations | |
5744 | differently by creating a lazy evaluation stub. */ | |
5745 | value = g; | |
5746 | value = mips_elf_high (value); | |
5747 | value &= howto->dst_mask; | |
5748 | break; | |
5749 | ||
5750 | case R_MIPS_GOT_LO16: | |
5751 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5752 | case R_MICROMIPS_GOT_LO16: |
5753 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
5754 | value = g & howto->dst_mask; |
5755 | break; | |
5756 | ||
5757 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 5758 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 5759 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
5760 | if (value == MINUS_ONE) |
5761 | return bfd_reloc_outofrange; | |
a8028dd0 | 5762 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5763 | overflowed_p = mips_elf_overflow_p (value, 16); |
5764 | break; | |
5765 | ||
5766 | case R_MIPS_GOT_OFST: | |
df58fc94 | 5767 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 5768 | if (local_p) |
5c18022e | 5769 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
5770 | else |
5771 | value = addend; | |
b49e97c9 TS |
5772 | overflowed_p = mips_elf_overflow_p (value, 16); |
5773 | break; | |
5774 | ||
5775 | case R_MIPS_SUB: | |
df58fc94 | 5776 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
5777 | value = symbol - addend; |
5778 | value &= howto->dst_mask; | |
5779 | break; | |
5780 | ||
5781 | case R_MIPS_HIGHER: | |
df58fc94 | 5782 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
5783 | value = mips_elf_higher (addend + symbol); |
5784 | value &= howto->dst_mask; | |
5785 | break; | |
5786 | ||
5787 | case R_MIPS_HIGHEST: | |
df58fc94 | 5788 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
5789 | value = mips_elf_highest (addend + symbol); |
5790 | value &= howto->dst_mask; | |
5791 | break; | |
5792 | ||
5793 | case R_MIPS_SCN_DISP: | |
df58fc94 | 5794 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
5795 | value = symbol + addend - sec->output_offset; |
5796 | value &= howto->dst_mask; | |
5797 | break; | |
5798 | ||
b49e97c9 | 5799 | case R_MIPS_JALR: |
df58fc94 | 5800 | case R_MICROMIPS_JALR: |
1367d393 ILT |
5801 | /* This relocation is only a hint. In some cases, we optimize |
5802 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
5803 | when the symbol does not resolve locally. */ |
5804 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 ILT |
5805 | return bfd_reloc_continue; |
5806 | value = symbol + addend; | |
5807 | break; | |
b49e97c9 | 5808 | |
1367d393 | 5809 | case R_MIPS_PJUMP: |
b49e97c9 TS |
5810 | case R_MIPS_GNU_VTINHERIT: |
5811 | case R_MIPS_GNU_VTENTRY: | |
5812 | /* We don't do anything with these at present. */ | |
5813 | return bfd_reloc_continue; | |
5814 | ||
5815 | default: | |
5816 | /* An unrecognized relocation type. */ | |
5817 | return bfd_reloc_notsupported; | |
5818 | } | |
5819 | ||
5820 | /* Store the VALUE for our caller. */ | |
5821 | *valuep = value; | |
5822 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
5823 | } | |
5824 | ||
5825 | /* Obtain the field relocated by RELOCATION. */ | |
5826 | ||
5827 | static bfd_vma | |
9719ad41 RS |
5828 | mips_elf_obtain_contents (reloc_howto_type *howto, |
5829 | const Elf_Internal_Rela *relocation, | |
5830 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
5831 | { |
5832 | bfd_vma x; | |
5833 | bfd_byte *location = contents + relocation->r_offset; | |
5834 | ||
5835 | /* Obtain the bytes. */ | |
5836 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
5837 | ||
b49e97c9 TS |
5838 | return x; |
5839 | } | |
5840 | ||
5841 | /* It has been determined that the result of the RELOCATION is the | |
5842 | VALUE. Use HOWTO to place VALUE into the output file at the | |
5843 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 5844 | relocation applies. |
38a7df63 | 5845 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 5846 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 5847 | |
b34976b6 | 5848 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 5849 | |
b34976b6 | 5850 | static bfd_boolean |
9719ad41 RS |
5851 | mips_elf_perform_relocation (struct bfd_link_info *info, |
5852 | reloc_howto_type *howto, | |
5853 | const Elf_Internal_Rela *relocation, | |
5854 | bfd_vma value, bfd *input_bfd, | |
5855 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 5856 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
5857 | { |
5858 | bfd_vma x; | |
5859 | bfd_byte *location; | |
5860 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5861 | ||
5862 | /* Figure out where the relocation is occurring. */ | |
5863 | location = contents + relocation->r_offset; | |
5864 | ||
df58fc94 | 5865 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
d6f16593 | 5866 | |
b49e97c9 TS |
5867 | /* Obtain the current value. */ |
5868 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5869 | ||
5870 | /* Clear the field we are setting. */ | |
5871 | x &= ~howto->dst_mask; | |
5872 | ||
b49e97c9 TS |
5873 | /* Set the field. */ |
5874 | x |= (value & howto->dst_mask); | |
5875 | ||
5876 | /* If required, turn JAL into JALX. */ | |
38a7df63 | 5877 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 5878 | { |
b34976b6 | 5879 | bfd_boolean ok; |
b49e97c9 TS |
5880 | bfd_vma opcode = x >> 26; |
5881 | bfd_vma jalx_opcode; | |
5882 | ||
5883 | /* Check to see if the opcode is already JAL or JALX. */ | |
5884 | if (r_type == R_MIPS16_26) | |
5885 | { | |
5886 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5887 | jalx_opcode = 0x7; | |
5888 | } | |
df58fc94 RS |
5889 | else if (r_type == R_MICROMIPS_26_S1) |
5890 | { | |
5891 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
5892 | jalx_opcode = 0x3c; | |
5893 | } | |
b49e97c9 TS |
5894 | else |
5895 | { | |
5896 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5897 | jalx_opcode = 0x1d; | |
5898 | } | |
5899 | ||
3bdf9505 MR |
5900 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
5901 | convert J or JALS to JALX. */ | |
b49e97c9 TS |
5902 | if (!ok) |
5903 | { | |
5904 | (*_bfd_error_handler) | |
3bdf9505 | 5905 | (_("%B: %A+0x%lx: Unsupported jump between ISA modes; consider recompiling with interlinking enabled."), |
d003868e AM |
5906 | input_bfd, |
5907 | input_section, | |
b49e97c9 TS |
5908 | (unsigned long) relocation->r_offset); |
5909 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5910 | return FALSE; |
b49e97c9 TS |
5911 | } |
5912 | ||
5913 | /* Make this the JALX opcode. */ | |
5914 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5915 | } | |
5916 | ||
38a7df63 CF |
5917 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
5918 | range. */ | |
cd8d5a82 | 5919 | if (!info->relocatable |
38a7df63 | 5920 | && !cross_mode_jump_p |
cd8d5a82 CF |
5921 | && ((JAL_TO_BAL_P (input_bfd) |
5922 | && r_type == R_MIPS_26 | |
5923 | && (x >> 26) == 0x3) /* jal addr */ | |
5924 | || (JALR_TO_BAL_P (input_bfd) | |
5925 | && r_type == R_MIPS_JALR | |
38a7df63 CF |
5926 | && x == 0x0320f809) /* jalr t9 */ |
5927 | || (JR_TO_B_P (input_bfd) | |
5928 | && r_type == R_MIPS_JALR | |
5929 | && x == 0x03200008))) /* jr t9 */ | |
1367d393 ILT |
5930 | { |
5931 | bfd_vma addr; | |
5932 | bfd_vma dest; | |
5933 | bfd_signed_vma off; | |
5934 | ||
5935 | addr = (input_section->output_section->vma | |
5936 | + input_section->output_offset | |
5937 | + relocation->r_offset | |
5938 | + 4); | |
5939 | if (r_type == R_MIPS_26) | |
5940 | dest = (value << 2) | ((addr >> 28) << 28); | |
5941 | else | |
5942 | dest = value; | |
5943 | off = dest - addr; | |
5944 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 CF |
5945 | { |
5946 | if (x == 0x03200008) /* jr t9 */ | |
5947 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ | |
5948 | else | |
5949 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
5950 | } | |
1367d393 ILT |
5951 | } |
5952 | ||
b49e97c9 TS |
5953 | /* Put the value into the output. */ |
5954 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 | 5955 | |
df58fc94 RS |
5956 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !info->relocatable, |
5957 | location); | |
d6f16593 | 5958 | |
b34976b6 | 5959 | return TRUE; |
b49e97c9 | 5960 | } |
b49e97c9 | 5961 | \f |
b49e97c9 TS |
5962 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
5963 | is the original relocation, which is now being transformed into a | |
5964 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
5965 | caller should store the result in place of the original addend. */ | |
5966 | ||
b34976b6 | 5967 | static bfd_boolean |
9719ad41 RS |
5968 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
5969 | struct bfd_link_info *info, | |
5970 | const Elf_Internal_Rela *rel, | |
5971 | struct mips_elf_link_hash_entry *h, | |
5972 | asection *sec, bfd_vma symbol, | |
5973 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 5974 | { |
947216bf | 5975 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
5976 | asection *sreloc; |
5977 | bfd *dynobj; | |
5978 | int r_type; | |
5d41f0b6 RS |
5979 | long indx; |
5980 | bfd_boolean defined_p; | |
0a44bf69 | 5981 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 5982 | |
0a44bf69 | 5983 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
5984 | BFD_ASSERT (htab != NULL); |
5985 | ||
b49e97c9 TS |
5986 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
5987 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 5988 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
5989 | BFD_ASSERT (sreloc != NULL); |
5990 | BFD_ASSERT (sreloc->contents != NULL); | |
5991 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 5992 | < sreloc->size); |
b49e97c9 | 5993 | |
b49e97c9 TS |
5994 | outrel[0].r_offset = |
5995 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
5996 | if (ABI_64_P (output_bfd)) |
5997 | { | |
5998 | outrel[1].r_offset = | |
5999 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6000 | outrel[2].r_offset = | |
6001 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6002 | } | |
b49e97c9 | 6003 | |
c5ae1840 | 6004 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6005 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
6006 | return TRUE; |
6007 | ||
6008 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6009 | { |
6010 | /* The relocation field has been converted into a relative value of | |
6011 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6012 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6013 | *addendp += symbol; |
5d41f0b6 | 6014 | return TRUE; |
0d591ff7 | 6015 | } |
b49e97c9 | 6016 | |
5d41f0b6 RS |
6017 | /* We must now calculate the dynamic symbol table index to use |
6018 | in the relocation. */ | |
d4a77f3f | 6019 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6020 | { |
020d7251 | 6021 | BFD_ASSERT (htab->is_vxworks || h->global_got_area != GGA_NONE); |
5d41f0b6 RS |
6022 | indx = h->root.dynindx; |
6023 | if (SGI_COMPAT (output_bfd)) | |
6024 | defined_p = h->root.def_regular; | |
6025 | else | |
6026 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6027 | relocation field. It therefore treats relocs against | |
6028 | defined symbols in the same way as relocs against | |
6029 | undefined symbols. */ | |
6030 | defined_p = FALSE; | |
6031 | } | |
b49e97c9 TS |
6032 | else |
6033 | { | |
5d41f0b6 RS |
6034 | if (sec != NULL && bfd_is_abs_section (sec)) |
6035 | indx = 0; | |
6036 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6037 | { |
5d41f0b6 RS |
6038 | bfd_set_error (bfd_error_bad_value); |
6039 | return FALSE; | |
b49e97c9 TS |
6040 | } |
6041 | else | |
6042 | { | |
5d41f0b6 | 6043 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6044 | if (indx == 0) |
6045 | { | |
6046 | asection *osec = htab->root.text_index_section; | |
6047 | indx = elf_section_data (osec)->dynindx; | |
6048 | } | |
5d41f0b6 RS |
6049 | if (indx == 0) |
6050 | abort (); | |
b49e97c9 TS |
6051 | } |
6052 | ||
5d41f0b6 RS |
6053 | /* Instead of generating a relocation using the section |
6054 | symbol, we may as well make it a fully relative | |
6055 | relocation. We want to avoid generating relocations to | |
6056 | local symbols because we used to generate them | |
6057 | incorrectly, without adding the original symbol value, | |
6058 | which is mandated by the ABI for section symbols. In | |
6059 | order to give dynamic loaders and applications time to | |
6060 | phase out the incorrect use, we refrain from emitting | |
6061 | section-relative relocations. It's not like they're | |
6062 | useful, after all. This should be a bit more efficient | |
6063 | as well. */ | |
6064 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6065 | the ABI says that relocations against STN_UNDEF should have | |
6066 | a symbol value of 0. Irix rld honors this, so relocations | |
6067 | against STN_UNDEF have no effect. */ | |
6068 | if (!SGI_COMPAT (output_bfd)) | |
6069 | indx = 0; | |
6070 | defined_p = TRUE; | |
b49e97c9 TS |
6071 | } |
6072 | ||
5d41f0b6 RS |
6073 | /* If the relocation was previously an absolute relocation and |
6074 | this symbol will not be referred to by the relocation, we must | |
6075 | adjust it by the value we give it in the dynamic symbol table. | |
6076 | Otherwise leave the job up to the dynamic linker. */ | |
6077 | if (defined_p && r_type != R_MIPS_REL32) | |
6078 | *addendp += symbol; | |
6079 | ||
0a44bf69 RS |
6080 | if (htab->is_vxworks) |
6081 | /* VxWorks uses non-relative relocations for this. */ | |
6082 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6083 | else | |
6084 | /* The relocation is always an REL32 relocation because we don't | |
6085 | know where the shared library will wind up at load-time. */ | |
6086 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6087 | R_MIPS_REL32); | |
6088 | ||
5d41f0b6 RS |
6089 | /* For strict adherence to the ABI specification, we should |
6090 | generate a R_MIPS_64 relocation record by itself before the | |
6091 | _REL32/_64 record as well, such that the addend is read in as | |
6092 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6093 | However, since none of the existing ELF64 MIPS dynamic | |
6094 | loaders seems to care, we don't waste space with these | |
6095 | artificial relocations. If this turns out to not be true, | |
6096 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6097 | as to make room for a pair of dynamic relocations per | |
6098 | invocation if ABI_64_P, and here we should generate an | |
6099 | additional relocation record with R_MIPS_64 by itself for a | |
6100 | NULL symbol before this relocation record. */ | |
6101 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6102 | ABI_64_P (output_bfd) | |
6103 | ? R_MIPS_64 | |
6104 | : R_MIPS_NONE); | |
6105 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6106 | ||
6107 | /* Adjust the output offset of the relocation to reference the | |
6108 | correct location in the output file. */ | |
6109 | outrel[0].r_offset += (input_section->output_section->vma | |
6110 | + input_section->output_offset); | |
6111 | outrel[1].r_offset += (input_section->output_section->vma | |
6112 | + input_section->output_offset); | |
6113 | outrel[2].r_offset += (input_section->output_section->vma | |
6114 | + input_section->output_offset); | |
6115 | ||
b49e97c9 TS |
6116 | /* Put the relocation back out. We have to use the special |
6117 | relocation outputter in the 64-bit case since the 64-bit | |
6118 | relocation format is non-standard. */ | |
6119 | if (ABI_64_P (output_bfd)) | |
6120 | { | |
6121 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6122 | (output_bfd, &outrel[0], | |
6123 | (sreloc->contents | |
6124 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6125 | } | |
0a44bf69 RS |
6126 | else if (htab->is_vxworks) |
6127 | { | |
6128 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6129 | outrel[0].r_addend = *addendp; | |
6130 | bfd_elf32_swap_reloca_out | |
6131 | (output_bfd, &outrel[0], | |
6132 | (sreloc->contents | |
6133 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6134 | } | |
b49e97c9 | 6135 | else |
947216bf AM |
6136 | bfd_elf32_swap_reloc_out |
6137 | (output_bfd, &outrel[0], | |
6138 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6139 | |
b49e97c9 TS |
6140 | /* We've now added another relocation. */ |
6141 | ++sreloc->reloc_count; | |
6142 | ||
6143 | /* Make sure the output section is writable. The dynamic linker | |
6144 | will be writing to it. */ | |
6145 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6146 | |= SHF_WRITE; | |
6147 | ||
6148 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6149 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6150 | { |
3d4d4302 | 6151 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6152 | bfd_byte *cr; |
6153 | ||
6154 | if (scpt) | |
6155 | { | |
6156 | Elf32_crinfo cptrel; | |
6157 | ||
6158 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6159 | cptrel.vaddr = (rel->r_offset | |
6160 | + input_section->output_section->vma | |
6161 | + input_section->output_offset); | |
6162 | if (r_type == R_MIPS_REL32) | |
6163 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6164 | else | |
6165 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6166 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6167 | cptrel.konst = *addendp; | |
6168 | ||
6169 | cr = (scpt->contents | |
6170 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6171 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6172 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6173 | ((Elf32_External_crinfo *) cr | |
6174 | + scpt->reloc_count)); | |
6175 | ++scpt->reloc_count; | |
6176 | } | |
6177 | } | |
6178 | ||
943284cc DJ |
6179 | /* If we've written this relocation for a readonly section, |
6180 | we need to set DF_TEXTREL again, so that we do not delete the | |
6181 | DT_TEXTREL tag. */ | |
6182 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6183 | info->flags |= DF_TEXTREL; | |
6184 | ||
b34976b6 | 6185 | return TRUE; |
b49e97c9 TS |
6186 | } |
6187 | \f | |
b49e97c9 TS |
6188 | /* Return the MACH for a MIPS e_flags value. */ |
6189 | ||
6190 | unsigned long | |
9719ad41 | 6191 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6192 | { |
6193 | switch (flags & EF_MIPS_MACH) | |
6194 | { | |
6195 | case E_MIPS_MACH_3900: | |
6196 | return bfd_mach_mips3900; | |
6197 | ||
6198 | case E_MIPS_MACH_4010: | |
6199 | return bfd_mach_mips4010; | |
6200 | ||
6201 | case E_MIPS_MACH_4100: | |
6202 | return bfd_mach_mips4100; | |
6203 | ||
6204 | case E_MIPS_MACH_4111: | |
6205 | return bfd_mach_mips4111; | |
6206 | ||
00707a0e RS |
6207 | case E_MIPS_MACH_4120: |
6208 | return bfd_mach_mips4120; | |
6209 | ||
b49e97c9 TS |
6210 | case E_MIPS_MACH_4650: |
6211 | return bfd_mach_mips4650; | |
6212 | ||
00707a0e RS |
6213 | case E_MIPS_MACH_5400: |
6214 | return bfd_mach_mips5400; | |
6215 | ||
6216 | case E_MIPS_MACH_5500: | |
6217 | return bfd_mach_mips5500; | |
6218 | ||
e407c74b NC |
6219 | case E_MIPS_MACH_5900: |
6220 | return bfd_mach_mips5900; | |
6221 | ||
0d2e43ed ILT |
6222 | case E_MIPS_MACH_9000: |
6223 | return bfd_mach_mips9000; | |
6224 | ||
b49e97c9 TS |
6225 | case E_MIPS_MACH_SB1: |
6226 | return bfd_mach_mips_sb1; | |
6227 | ||
350cc38d MS |
6228 | case E_MIPS_MACH_LS2E: |
6229 | return bfd_mach_mips_loongson_2e; | |
6230 | ||
6231 | case E_MIPS_MACH_LS2F: | |
6232 | return bfd_mach_mips_loongson_2f; | |
6233 | ||
fd503541 NC |
6234 | case E_MIPS_MACH_LS3A: |
6235 | return bfd_mach_mips_loongson_3a; | |
6236 | ||
432233b3 AP |
6237 | case E_MIPS_MACH_OCTEON2: |
6238 | return bfd_mach_mips_octeon2; | |
6239 | ||
6f179bd0 AN |
6240 | case E_MIPS_MACH_OCTEON: |
6241 | return bfd_mach_mips_octeon; | |
6242 | ||
52b6b6b9 JM |
6243 | case E_MIPS_MACH_XLR: |
6244 | return bfd_mach_mips_xlr; | |
6245 | ||
b49e97c9 TS |
6246 | default: |
6247 | switch (flags & EF_MIPS_ARCH) | |
6248 | { | |
6249 | default: | |
6250 | case E_MIPS_ARCH_1: | |
6251 | return bfd_mach_mips3000; | |
b49e97c9 TS |
6252 | |
6253 | case E_MIPS_ARCH_2: | |
6254 | return bfd_mach_mips6000; | |
b49e97c9 TS |
6255 | |
6256 | case E_MIPS_ARCH_3: | |
6257 | return bfd_mach_mips4000; | |
b49e97c9 TS |
6258 | |
6259 | case E_MIPS_ARCH_4: | |
6260 | return bfd_mach_mips8000; | |
b49e97c9 TS |
6261 | |
6262 | case E_MIPS_ARCH_5: | |
6263 | return bfd_mach_mips5; | |
b49e97c9 TS |
6264 | |
6265 | case E_MIPS_ARCH_32: | |
6266 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
6267 | |
6268 | case E_MIPS_ARCH_64: | |
6269 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6270 | |
6271 | case E_MIPS_ARCH_32R2: | |
6272 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6273 | |
6274 | case E_MIPS_ARCH_64R2: | |
6275 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
6276 | } |
6277 | } | |
6278 | ||
6279 | return 0; | |
6280 | } | |
6281 | ||
6282 | /* Return printable name for ABI. */ | |
6283 | ||
6284 | static INLINE char * | |
9719ad41 | 6285 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6286 | { |
6287 | flagword flags; | |
6288 | ||
6289 | flags = elf_elfheader (abfd)->e_flags; | |
6290 | switch (flags & EF_MIPS_ABI) | |
6291 | { | |
6292 | case 0: | |
6293 | if (ABI_N32_P (abfd)) | |
6294 | return "N32"; | |
6295 | else if (ABI_64_P (abfd)) | |
6296 | return "64"; | |
6297 | else | |
6298 | return "none"; | |
6299 | case E_MIPS_ABI_O32: | |
6300 | return "O32"; | |
6301 | case E_MIPS_ABI_O64: | |
6302 | return "O64"; | |
6303 | case E_MIPS_ABI_EABI32: | |
6304 | return "EABI32"; | |
6305 | case E_MIPS_ABI_EABI64: | |
6306 | return "EABI64"; | |
6307 | default: | |
6308 | return "unknown abi"; | |
6309 | } | |
6310 | } | |
6311 | \f | |
6312 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6313 | other is for small objects. All the small objects are kept | |
6314 | together, and then referenced via the gp pointer, which yields | |
6315 | faster assembler code. This is what we use for the small common | |
6316 | section. This approach is copied from ecoff.c. */ | |
6317 | static asection mips_elf_scom_section; | |
6318 | static asymbol mips_elf_scom_symbol; | |
6319 | static asymbol *mips_elf_scom_symbol_ptr; | |
6320 | ||
6321 | /* MIPS ELF also uses an acommon section, which represents an | |
6322 | allocated common symbol which may be overridden by a | |
6323 | definition in a shared library. */ | |
6324 | static asection mips_elf_acom_section; | |
6325 | static asymbol mips_elf_acom_symbol; | |
6326 | static asymbol *mips_elf_acom_symbol_ptr; | |
6327 | ||
738e5348 | 6328 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
6329 | |
6330 | void | |
9719ad41 | 6331 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
6332 | { |
6333 | elf_symbol_type *elfsym; | |
6334 | ||
738e5348 | 6335 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
6336 | elfsym = (elf_symbol_type *) asym; |
6337 | switch (elfsym->internal_elf_sym.st_shndx) | |
6338 | { | |
6339 | case SHN_MIPS_ACOMMON: | |
6340 | /* This section is used in a dynamically linked executable file. | |
6341 | It is an allocated common section. The dynamic linker can | |
6342 | either resolve these symbols to something in a shared | |
6343 | library, or it can just leave them here. For our purposes, | |
6344 | we can consider these symbols to be in a new section. */ | |
6345 | if (mips_elf_acom_section.name == NULL) | |
6346 | { | |
6347 | /* Initialize the acommon section. */ | |
6348 | mips_elf_acom_section.name = ".acommon"; | |
6349 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6350 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6351 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6352 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6353 | mips_elf_acom_symbol.name = ".acommon"; | |
6354 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6355 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6356 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6357 | } | |
6358 | asym->section = &mips_elf_acom_section; | |
6359 | break; | |
6360 | ||
6361 | case SHN_COMMON: | |
6362 | /* Common symbols less than the GP size are automatically | |
6363 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6364 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6365 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6366 | || IRIX_COMPAT (abfd) == ict_irix6) |
6367 | break; | |
6368 | /* Fall through. */ | |
6369 | case SHN_MIPS_SCOMMON: | |
6370 | if (mips_elf_scom_section.name == NULL) | |
6371 | { | |
6372 | /* Initialize the small common section. */ | |
6373 | mips_elf_scom_section.name = ".scommon"; | |
6374 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6375 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6376 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6377 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6378 | mips_elf_scom_symbol.name = ".scommon"; | |
6379 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6380 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6381 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6382 | } | |
6383 | asym->section = &mips_elf_scom_section; | |
6384 | asym->value = elfsym->internal_elf_sym.st_size; | |
6385 | break; | |
6386 | ||
6387 | case SHN_MIPS_SUNDEFINED: | |
6388 | asym->section = bfd_und_section_ptr; | |
6389 | break; | |
6390 | ||
b49e97c9 | 6391 | case SHN_MIPS_TEXT: |
00b4930b TS |
6392 | { |
6393 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6394 | ||
00b4930b TS |
6395 | if (section != NULL) |
6396 | { | |
6397 | asym->section = section; | |
6398 | /* MIPS_TEXT is a bit special, the address is not an offset | |
6399 | to the base of the .text section. So substract the section | |
6400 | base address to make it an offset. */ | |
6401 | asym->value -= section->vma; | |
6402 | } | |
6403 | } | |
b49e97c9 TS |
6404 | break; |
6405 | ||
6406 | case SHN_MIPS_DATA: | |
00b4930b TS |
6407 | { |
6408 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6409 | ||
00b4930b TS |
6410 | if (section != NULL) |
6411 | { | |
6412 | asym->section = section; | |
6413 | /* MIPS_DATA is a bit special, the address is not an offset | |
6414 | to the base of the .data section. So substract the section | |
6415 | base address to make it an offset. */ | |
6416 | asym->value -= section->vma; | |
6417 | } | |
6418 | } | |
b49e97c9 | 6419 | break; |
b49e97c9 | 6420 | } |
738e5348 | 6421 | |
df58fc94 RS |
6422 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
6423 | or microMIPS one. */ | |
738e5348 RS |
6424 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
6425 | && (asym->value & 1) != 0) | |
6426 | { | |
6427 | asym->value--; | |
e8faf7d1 | 6428 | if (MICROMIPS_P (abfd)) |
df58fc94 RS |
6429 | elfsym->internal_elf_sym.st_other |
6430 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
6431 | else | |
6432 | elfsym->internal_elf_sym.st_other | |
6433 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 6434 | } |
b49e97c9 TS |
6435 | } |
6436 | \f | |
8c946ed5 RS |
6437 | /* Implement elf_backend_eh_frame_address_size. This differs from |
6438 | the default in the way it handles EABI64. | |
6439 | ||
6440 | EABI64 was originally specified as an LP64 ABI, and that is what | |
6441 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
6442 | historically accepted the combination of -mabi=eabi and -mlong32, | |
6443 | and this ILP32 variation has become semi-official over time. | |
6444 | Both forms use elf32 and have pointer-sized FDE addresses. | |
6445 | ||
6446 | If an EABI object was generated by GCC 4.0 or above, it will have | |
6447 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
6448 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
6449 | have no special marking to distinguish them from LP64 objects. | |
6450 | ||
6451 | We don't want users of the official LP64 ABI to be punished for the | |
6452 | existence of the ILP32 variant, but at the same time, we don't want | |
6453 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
6454 | We therefore take the following approach: | |
6455 | ||
6456 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
6457 | determine the pointer size. | |
6458 | ||
6459 | - Otherwise check the type of the first relocation. Assume that | |
6460 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
6461 | ||
6462 | - Otherwise punt. | |
6463 | ||
6464 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
6465 | compilers because, in the kind of output generated by those compilers, | |
6466 | the first relocation will be associated with either a CIE personality | |
6467 | routine or an FDE start address. Furthermore, the compilers never | |
6468 | used a special (non-pointer) encoding for this ABI. | |
6469 | ||
6470 | Checking the relocation type should also be safe because there is no | |
6471 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
6472 | did so. */ | |
6473 | ||
6474 | unsigned int | |
6475 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
6476 | { | |
6477 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
6478 | return 8; | |
6479 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
6480 | { | |
6481 | bfd_boolean long32_p, long64_p; | |
6482 | ||
6483 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
6484 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
6485 | if (long32_p && long64_p) | |
6486 | return 0; | |
6487 | if (long32_p) | |
6488 | return 4; | |
6489 | if (long64_p) | |
6490 | return 8; | |
6491 | ||
6492 | if (sec->reloc_count > 0 | |
6493 | && elf_section_data (sec)->relocs != NULL | |
6494 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
6495 | == R_MIPS_64)) | |
6496 | return 8; | |
6497 | ||
6498 | return 0; | |
6499 | } | |
6500 | return 4; | |
6501 | } | |
6502 | \f | |
174fd7f9 RS |
6503 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
6504 | relocations against two unnamed section symbols to resolve to the | |
6505 | same address. For example, if we have code like: | |
6506 | ||
6507 | lw $4,%got_disp(.data)($gp) | |
6508 | lw $25,%got_disp(.text)($gp) | |
6509 | jalr $25 | |
6510 | ||
6511 | then the linker will resolve both relocations to .data and the program | |
6512 | will jump there rather than to .text. | |
6513 | ||
6514 | We can work around this problem by giving names to local section symbols. | |
6515 | This is also what the MIPSpro tools do. */ | |
6516 | ||
6517 | bfd_boolean | |
6518 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
6519 | { | |
6520 | return SGI_COMPAT (abfd); | |
6521 | } | |
6522 | \f | |
b49e97c9 TS |
6523 | /* Work over a section just before writing it out. This routine is |
6524 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
6525 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
6526 | a better way. */ | |
6527 | ||
b34976b6 | 6528 | bfd_boolean |
9719ad41 | 6529 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
6530 | { |
6531 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
6532 | && hdr->sh_size > 0) | |
6533 | { | |
6534 | bfd_byte buf[4]; | |
6535 | ||
6536 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
6537 | BFD_ASSERT (hdr->contents == NULL); | |
6538 | ||
6539 | if (bfd_seek (abfd, | |
6540 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
6541 | SEEK_SET) != 0) | |
b34976b6 | 6542 | return FALSE; |
b49e97c9 | 6543 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6544 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6545 | return FALSE; |
b49e97c9 TS |
6546 | } |
6547 | ||
6548 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
6549 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
6550 | && mips_elf_section_data (hdr->bfd_section) != NULL |
6551 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
6552 | { |
6553 | bfd_byte *contents, *l, *lend; | |
6554 | ||
f0abc2a1 AM |
6555 | /* We stored the section contents in the tdata field in the |
6556 | set_section_contents routine. We save the section contents | |
6557 | so that we don't have to read them again. | |
b49e97c9 TS |
6558 | At this point we know that elf_gp is set, so we can look |
6559 | through the section contents to see if there is an | |
6560 | ODK_REGINFO structure. */ | |
6561 | ||
f0abc2a1 | 6562 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
6563 | l = contents; |
6564 | lend = contents + hdr->sh_size; | |
6565 | while (l + sizeof (Elf_External_Options) <= lend) | |
6566 | { | |
6567 | Elf_Internal_Options intopt; | |
6568 | ||
6569 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6570 | &intopt); | |
1bc8074d MR |
6571 | if (intopt.size < sizeof (Elf_External_Options)) |
6572 | { | |
6573 | (*_bfd_error_handler) | |
6574 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6575 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6576 | break; | |
6577 | } | |
b49e97c9 TS |
6578 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6579 | { | |
6580 | bfd_byte buf[8]; | |
6581 | ||
6582 | if (bfd_seek (abfd, | |
6583 | (hdr->sh_offset | |
6584 | + (l - contents) | |
6585 | + sizeof (Elf_External_Options) | |
6586 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
6587 | SEEK_SET) != 0) | |
b34976b6 | 6588 | return FALSE; |
b49e97c9 | 6589 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6590 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 6591 | return FALSE; |
b49e97c9 TS |
6592 | } |
6593 | else if (intopt.kind == ODK_REGINFO) | |
6594 | { | |
6595 | bfd_byte buf[4]; | |
6596 | ||
6597 | if (bfd_seek (abfd, | |
6598 | (hdr->sh_offset | |
6599 | + (l - contents) | |
6600 | + sizeof (Elf_External_Options) | |
6601 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
6602 | SEEK_SET) != 0) | |
b34976b6 | 6603 | return FALSE; |
b49e97c9 | 6604 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6605 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6606 | return FALSE; |
b49e97c9 TS |
6607 | } |
6608 | l += intopt.size; | |
6609 | } | |
6610 | } | |
6611 | ||
6612 | if (hdr->bfd_section != NULL) | |
6613 | { | |
6614 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
6615 | ||
2d0f9ad9 JM |
6616 | /* .sbss is not handled specially here because the GNU/Linux |
6617 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
6618 | changing it back to NOBITS breaks the binary. The entry in | |
6619 | _bfd_mips_elf_special_sections will ensure the correct flags | |
6620 | are set on .sbss if BFD creates it without reading it from an | |
6621 | input file, and without special handling here the flags set | |
6622 | on it in an input file will be followed. */ | |
b49e97c9 TS |
6623 | if (strcmp (name, ".sdata") == 0 |
6624 | || strcmp (name, ".lit8") == 0 | |
6625 | || strcmp (name, ".lit4") == 0) | |
6626 | { | |
6627 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
6628 | hdr->sh_type = SHT_PROGBITS; | |
6629 | } | |
b49e97c9 TS |
6630 | else if (strcmp (name, ".srdata") == 0) |
6631 | { | |
6632 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
6633 | hdr->sh_type = SHT_PROGBITS; | |
6634 | } | |
6635 | else if (strcmp (name, ".compact_rel") == 0) | |
6636 | { | |
6637 | hdr->sh_flags = 0; | |
6638 | hdr->sh_type = SHT_PROGBITS; | |
6639 | } | |
6640 | else if (strcmp (name, ".rtproc") == 0) | |
6641 | { | |
6642 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
6643 | { | |
6644 | unsigned int adjust; | |
6645 | ||
6646 | adjust = hdr->sh_size % hdr->sh_addralign; | |
6647 | if (adjust != 0) | |
6648 | hdr->sh_size += hdr->sh_addralign - adjust; | |
6649 | } | |
6650 | } | |
6651 | } | |
6652 | ||
b34976b6 | 6653 | return TRUE; |
b49e97c9 TS |
6654 | } |
6655 | ||
6656 | /* Handle a MIPS specific section when reading an object file. This | |
6657 | is called when elfcode.h finds a section with an unknown type. | |
6658 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
6659 | ||
6660 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
6661 | how to. */ | |
6662 | ||
b34976b6 | 6663 | bfd_boolean |
6dc132d9 L |
6664 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
6665 | Elf_Internal_Shdr *hdr, | |
6666 | const char *name, | |
6667 | int shindex) | |
b49e97c9 TS |
6668 | { |
6669 | flagword flags = 0; | |
6670 | ||
6671 | /* There ought to be a place to keep ELF backend specific flags, but | |
6672 | at the moment there isn't one. We just keep track of the | |
6673 | sections by their name, instead. Fortunately, the ABI gives | |
6674 | suggested names for all the MIPS specific sections, so we will | |
6675 | probably get away with this. */ | |
6676 | switch (hdr->sh_type) | |
6677 | { | |
6678 | case SHT_MIPS_LIBLIST: | |
6679 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 6680 | return FALSE; |
b49e97c9 TS |
6681 | break; |
6682 | case SHT_MIPS_MSYM: | |
6683 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 6684 | return FALSE; |
b49e97c9 TS |
6685 | break; |
6686 | case SHT_MIPS_CONFLICT: | |
6687 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 6688 | return FALSE; |
b49e97c9 TS |
6689 | break; |
6690 | case SHT_MIPS_GPTAB: | |
0112cd26 | 6691 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 6692 | return FALSE; |
b49e97c9 TS |
6693 | break; |
6694 | case SHT_MIPS_UCODE: | |
6695 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 6696 | return FALSE; |
b49e97c9 TS |
6697 | break; |
6698 | case SHT_MIPS_DEBUG: | |
6699 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 6700 | return FALSE; |
b49e97c9 TS |
6701 | flags = SEC_DEBUGGING; |
6702 | break; | |
6703 | case SHT_MIPS_REGINFO: | |
6704 | if (strcmp (name, ".reginfo") != 0 | |
6705 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 6706 | return FALSE; |
b49e97c9 TS |
6707 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
6708 | break; | |
6709 | case SHT_MIPS_IFACE: | |
6710 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 6711 | return FALSE; |
b49e97c9 TS |
6712 | break; |
6713 | case SHT_MIPS_CONTENT: | |
0112cd26 | 6714 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 6715 | return FALSE; |
b49e97c9 TS |
6716 | break; |
6717 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 6718 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 6719 | return FALSE; |
b49e97c9 TS |
6720 | break; |
6721 | case SHT_MIPS_DWARF: | |
1b315056 | 6722 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 6723 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 6724 | return FALSE; |
b49e97c9 TS |
6725 | break; |
6726 | case SHT_MIPS_SYMBOL_LIB: | |
6727 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 6728 | return FALSE; |
b49e97c9 TS |
6729 | break; |
6730 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
6731 | if (! CONST_STRNEQ (name, ".MIPS.events") |
6732 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 6733 | return FALSE; |
b49e97c9 TS |
6734 | break; |
6735 | default: | |
cc2e31b9 | 6736 | break; |
b49e97c9 TS |
6737 | } |
6738 | ||
6dc132d9 | 6739 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 6740 | return FALSE; |
b49e97c9 TS |
6741 | |
6742 | if (flags) | |
6743 | { | |
6744 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
6745 | (bfd_get_section_flags (abfd, | |
6746 | hdr->bfd_section) | |
6747 | | flags))) | |
b34976b6 | 6748 | return FALSE; |
b49e97c9 TS |
6749 | } |
6750 | ||
6751 | /* FIXME: We should record sh_info for a .gptab section. */ | |
6752 | ||
6753 | /* For a .reginfo section, set the gp value in the tdata information | |
6754 | from the contents of this section. We need the gp value while | |
6755 | processing relocs, so we just get it now. The .reginfo section | |
6756 | is not used in the 64-bit MIPS ELF ABI. */ | |
6757 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
6758 | { | |
6759 | Elf32_External_RegInfo ext; | |
6760 | Elf32_RegInfo s; | |
6761 | ||
9719ad41 RS |
6762 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
6763 | &ext, 0, sizeof ext)) | |
b34976b6 | 6764 | return FALSE; |
b49e97c9 TS |
6765 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
6766 | elf_gp (abfd) = s.ri_gp_value; | |
6767 | } | |
6768 | ||
6769 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
6770 | set the gp value based on what we find. We may see both | |
6771 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
6772 | they should agree. */ | |
6773 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
6774 | { | |
6775 | bfd_byte *contents, *l, *lend; | |
6776 | ||
9719ad41 | 6777 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 6778 | if (contents == NULL) |
b34976b6 | 6779 | return FALSE; |
b49e97c9 | 6780 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 6781 | 0, hdr->sh_size)) |
b49e97c9 TS |
6782 | { |
6783 | free (contents); | |
b34976b6 | 6784 | return FALSE; |
b49e97c9 TS |
6785 | } |
6786 | l = contents; | |
6787 | lend = contents + hdr->sh_size; | |
6788 | while (l + sizeof (Elf_External_Options) <= lend) | |
6789 | { | |
6790 | Elf_Internal_Options intopt; | |
6791 | ||
6792 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6793 | &intopt); | |
1bc8074d MR |
6794 | if (intopt.size < sizeof (Elf_External_Options)) |
6795 | { | |
6796 | (*_bfd_error_handler) | |
6797 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6798 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6799 | break; | |
6800 | } | |
b49e97c9 TS |
6801 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6802 | { | |
6803 | Elf64_Internal_RegInfo intreg; | |
6804 | ||
6805 | bfd_mips_elf64_swap_reginfo_in | |
6806 | (abfd, | |
6807 | ((Elf64_External_RegInfo *) | |
6808 | (l + sizeof (Elf_External_Options))), | |
6809 | &intreg); | |
6810 | elf_gp (abfd) = intreg.ri_gp_value; | |
6811 | } | |
6812 | else if (intopt.kind == ODK_REGINFO) | |
6813 | { | |
6814 | Elf32_RegInfo intreg; | |
6815 | ||
6816 | bfd_mips_elf32_swap_reginfo_in | |
6817 | (abfd, | |
6818 | ((Elf32_External_RegInfo *) | |
6819 | (l + sizeof (Elf_External_Options))), | |
6820 | &intreg); | |
6821 | elf_gp (abfd) = intreg.ri_gp_value; | |
6822 | } | |
6823 | l += intopt.size; | |
6824 | } | |
6825 | free (contents); | |
6826 | } | |
6827 | ||
b34976b6 | 6828 | return TRUE; |
b49e97c9 TS |
6829 | } |
6830 | ||
6831 | /* Set the correct type for a MIPS ELF section. We do this by the | |
6832 | section name, which is a hack, but ought to work. This routine is | |
6833 | used by both the 32-bit and the 64-bit ABI. */ | |
6834 | ||
b34976b6 | 6835 | bfd_boolean |
9719ad41 | 6836 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 6837 | { |
0414f35b | 6838 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
6839 | |
6840 | if (strcmp (name, ".liblist") == 0) | |
6841 | { | |
6842 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 6843 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
6844 | /* The sh_link field is set in final_write_processing. */ |
6845 | } | |
6846 | else if (strcmp (name, ".conflict") == 0) | |
6847 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 6848 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
6849 | { |
6850 | hdr->sh_type = SHT_MIPS_GPTAB; | |
6851 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
6852 | /* The sh_info field is set in final_write_processing. */ | |
6853 | } | |
6854 | else if (strcmp (name, ".ucode") == 0) | |
6855 | hdr->sh_type = SHT_MIPS_UCODE; | |
6856 | else if (strcmp (name, ".mdebug") == 0) | |
6857 | { | |
6858 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 6859 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
6860 | entsize of 0. FIXME: Does this matter? */ |
6861 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
6862 | hdr->sh_entsize = 0; | |
6863 | else | |
6864 | hdr->sh_entsize = 1; | |
6865 | } | |
6866 | else if (strcmp (name, ".reginfo") == 0) | |
6867 | { | |
6868 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 6869 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
6870 | entsize of 0x18. FIXME: Does this matter? */ |
6871 | if (SGI_COMPAT (abfd)) | |
6872 | { | |
6873 | if ((abfd->flags & DYNAMIC) != 0) | |
6874 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6875 | else | |
6876 | hdr->sh_entsize = 1; | |
6877 | } | |
6878 | else | |
6879 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6880 | } | |
6881 | else if (SGI_COMPAT (abfd) | |
6882 | && (strcmp (name, ".hash") == 0 | |
6883 | || strcmp (name, ".dynamic") == 0 | |
6884 | || strcmp (name, ".dynstr") == 0)) | |
6885 | { | |
6886 | if (SGI_COMPAT (abfd)) | |
6887 | hdr->sh_entsize = 0; | |
6888 | #if 0 | |
8dc1a139 | 6889 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6890 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6891 | #endif | |
6892 | } | |
6893 | else if (strcmp (name, ".got") == 0 | |
6894 | || strcmp (name, ".srdata") == 0 | |
6895 | || strcmp (name, ".sdata") == 0 | |
6896 | || strcmp (name, ".sbss") == 0 | |
6897 | || strcmp (name, ".lit4") == 0 | |
6898 | || strcmp (name, ".lit8") == 0) | |
6899 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6900 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6901 | { | |
6902 | hdr->sh_type = SHT_MIPS_IFACE; | |
6903 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6904 | } | |
0112cd26 | 6905 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6906 | { |
6907 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6908 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6909 | /* The sh_info field is set in final_write_processing. */ | |
6910 | } | |
cc2e31b9 | 6911 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6912 | { |
6913 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6914 | hdr->sh_entsize = 1; | |
6915 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6916 | } | |
1b315056 CS |
6917 | else if (CONST_STRNEQ (name, ".debug_") |
6918 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6919 | { |
6920 | hdr->sh_type = SHT_MIPS_DWARF; | |
6921 | ||
6922 | /* Irix facilities such as libexc expect a single .debug_frame | |
6923 | per executable, the system ones have NOSTRIP set and the linker | |
6924 | doesn't merge sections with different flags so ... */ | |
6925 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
6926 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6927 | } | |
b49e97c9 TS |
6928 | else if (strcmp (name, ".MIPS.symlib") == 0) |
6929 | { | |
6930 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
6931 | /* The sh_link and sh_info fields are set in | |
6932 | final_write_processing. */ | |
6933 | } | |
0112cd26 NC |
6934 | else if (CONST_STRNEQ (name, ".MIPS.events") |
6935 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
6936 | { |
6937 | hdr->sh_type = SHT_MIPS_EVENTS; | |
6938 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6939 | /* The sh_link field is set in final_write_processing. */ | |
6940 | } | |
6941 | else if (strcmp (name, ".msym") == 0) | |
6942 | { | |
6943 | hdr->sh_type = SHT_MIPS_MSYM; | |
6944 | hdr->sh_flags |= SHF_ALLOC; | |
6945 | hdr->sh_entsize = 8; | |
6946 | } | |
6947 | ||
7a79a000 TS |
6948 | /* The generic elf_fake_sections will set up REL_HDR using the default |
6949 | kind of relocations. We used to set up a second header for the | |
6950 | non-default kind of relocations here, but only NewABI would use | |
6951 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
6952 | Thus we create those header only on demand now. */ | |
b49e97c9 | 6953 | |
b34976b6 | 6954 | return TRUE; |
b49e97c9 TS |
6955 | } |
6956 | ||
6957 | /* Given a BFD section, try to locate the corresponding ELF section | |
6958 | index. This is used by both the 32-bit and the 64-bit ABI. | |
6959 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
6960 | but for non-PIC objects we will certainly want support for at least | |
6961 | the .scommon section. */ | |
6962 | ||
b34976b6 | 6963 | bfd_boolean |
9719ad41 RS |
6964 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
6965 | asection *sec, int *retval) | |
b49e97c9 TS |
6966 | { |
6967 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
6968 | { | |
6969 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 6970 | return TRUE; |
b49e97c9 TS |
6971 | } |
6972 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
6973 | { | |
6974 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 6975 | return TRUE; |
b49e97c9 | 6976 | } |
b34976b6 | 6977 | return FALSE; |
b49e97c9 TS |
6978 | } |
6979 | \f | |
6980 | /* Hook called by the linker routine which adds symbols from an object | |
6981 | file. We must handle the special MIPS section numbers here. */ | |
6982 | ||
b34976b6 | 6983 | bfd_boolean |
9719ad41 | 6984 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 6985 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
6986 | flagword *flagsp ATTRIBUTE_UNUSED, |
6987 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
6988 | { |
6989 | if (SGI_COMPAT (abfd) | |
6990 | && (abfd->flags & DYNAMIC) != 0 | |
6991 | && strcmp (*namep, "_rld_new_interface") == 0) | |
6992 | { | |
8dc1a139 | 6993 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 6994 | *namep = NULL; |
b34976b6 | 6995 | return TRUE; |
b49e97c9 TS |
6996 | } |
6997 | ||
eedecc07 DD |
6998 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
6999 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7000 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7001 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7002 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7003 | is not done for them. */ | |
7004 | if (!NEWABI_P(abfd) | |
7005 | && (sym->st_shndx == SHN_ABS) | |
7006 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7007 | { | |
7008 | *namep = NULL; | |
7009 | return TRUE; | |
7010 | } | |
7011 | ||
b49e97c9 TS |
7012 | switch (sym->st_shndx) |
7013 | { | |
7014 | case SHN_COMMON: | |
7015 | /* Common symbols less than the GP size are automatically | |
7016 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7017 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7018 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7019 | || IRIX_COMPAT (abfd) == ict_irix6) |
7020 | break; | |
7021 | /* Fall through. */ | |
7022 | case SHN_MIPS_SCOMMON: | |
7023 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
7024 | (*secp)->flags |= SEC_IS_COMMON; | |
7025 | *valp = sym->st_size; | |
7026 | break; | |
7027 | ||
7028 | case SHN_MIPS_TEXT: | |
7029 | /* This section is used in a shared object. */ | |
698600e4 | 7030 | if (mips_elf_tdata (abfd)->elf_text_section == NULL) |
b49e97c9 TS |
7031 | { |
7032 | asymbol *elf_text_symbol; | |
7033 | asection *elf_text_section; | |
7034 | bfd_size_type amt = sizeof (asection); | |
7035 | ||
7036 | elf_text_section = bfd_zalloc (abfd, amt); | |
7037 | if (elf_text_section == NULL) | |
b34976b6 | 7038 | return FALSE; |
b49e97c9 TS |
7039 | |
7040 | amt = sizeof (asymbol); | |
7041 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7042 | if (elf_text_symbol == NULL) | |
b34976b6 | 7043 | return FALSE; |
b49e97c9 TS |
7044 | |
7045 | /* Initialize the section. */ | |
7046 | ||
698600e4 AM |
7047 | mips_elf_tdata (abfd)->elf_text_section = elf_text_section; |
7048 | mips_elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
b49e97c9 TS |
7049 | |
7050 | elf_text_section->symbol = elf_text_symbol; | |
698600e4 | 7051 | elf_text_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_text_symbol; |
b49e97c9 TS |
7052 | |
7053 | elf_text_section->name = ".text"; | |
7054 | elf_text_section->flags = SEC_NO_FLAGS; | |
7055 | elf_text_section->output_section = NULL; | |
7056 | elf_text_section->owner = abfd; | |
7057 | elf_text_symbol->name = ".text"; | |
7058 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7059 | elf_text_symbol->section = elf_text_section; | |
7060 | } | |
7061 | /* This code used to do *secp = bfd_und_section_ptr if | |
7062 | info->shared. I don't know why, and that doesn't make sense, | |
7063 | so I took it out. */ | |
698600e4 | 7064 | *secp = mips_elf_tdata (abfd)->elf_text_section; |
b49e97c9 TS |
7065 | break; |
7066 | ||
7067 | case SHN_MIPS_ACOMMON: | |
7068 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7069 | case SHN_MIPS_DATA: | |
7070 | /* This section is used in a shared object. */ | |
698600e4 | 7071 | if (mips_elf_tdata (abfd)->elf_data_section == NULL) |
b49e97c9 TS |
7072 | { |
7073 | asymbol *elf_data_symbol; | |
7074 | asection *elf_data_section; | |
7075 | bfd_size_type amt = sizeof (asection); | |
7076 | ||
7077 | elf_data_section = bfd_zalloc (abfd, amt); | |
7078 | if (elf_data_section == NULL) | |
b34976b6 | 7079 | return FALSE; |
b49e97c9 TS |
7080 | |
7081 | amt = sizeof (asymbol); | |
7082 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7083 | if (elf_data_symbol == NULL) | |
b34976b6 | 7084 | return FALSE; |
b49e97c9 TS |
7085 | |
7086 | /* Initialize the section. */ | |
7087 | ||
698600e4 AM |
7088 | mips_elf_tdata (abfd)->elf_data_section = elf_data_section; |
7089 | mips_elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
b49e97c9 TS |
7090 | |
7091 | elf_data_section->symbol = elf_data_symbol; | |
698600e4 | 7092 | elf_data_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_data_symbol; |
b49e97c9 TS |
7093 | |
7094 | elf_data_section->name = ".data"; | |
7095 | elf_data_section->flags = SEC_NO_FLAGS; | |
7096 | elf_data_section->output_section = NULL; | |
7097 | elf_data_section->owner = abfd; | |
7098 | elf_data_symbol->name = ".data"; | |
7099 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7100 | elf_data_symbol->section = elf_data_section; | |
7101 | } | |
7102 | /* This code used to do *secp = bfd_und_section_ptr if | |
7103 | info->shared. I don't know why, and that doesn't make sense, | |
7104 | so I took it out. */ | |
698600e4 | 7105 | *secp = mips_elf_tdata (abfd)->elf_data_section; |
b49e97c9 TS |
7106 | break; |
7107 | ||
7108 | case SHN_MIPS_SUNDEFINED: | |
7109 | *secp = bfd_und_section_ptr; | |
7110 | break; | |
7111 | } | |
7112 | ||
7113 | if (SGI_COMPAT (abfd) | |
7114 | && ! info->shared | |
f13a99db | 7115 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7116 | && strcmp (*namep, "__rld_obj_head") == 0) |
7117 | { | |
7118 | struct elf_link_hash_entry *h; | |
14a793b2 | 7119 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7120 | |
7121 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7122 | bh = NULL; |
b49e97c9 | 7123 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 7124 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 7125 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 7126 | return FALSE; |
14a793b2 AM |
7127 | |
7128 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7129 | h->non_elf = 0; |
7130 | h->def_regular = 1; | |
b49e97c9 TS |
7131 | h->type = STT_OBJECT; |
7132 | ||
c152c796 | 7133 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7134 | return FALSE; |
b49e97c9 | 7135 | |
b34976b6 | 7136 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b4082c70 | 7137 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7138 | } |
7139 | ||
7140 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7141 | odd. This will cause something like .word SYM to come up with | |
7142 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7143 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7144 | ++*valp; |
7145 | ||
b34976b6 | 7146 | return TRUE; |
b49e97c9 TS |
7147 | } |
7148 | ||
7149 | /* This hook function is called before the linker writes out a global | |
7150 | symbol. We mark symbols as small common if appropriate. This is | |
7151 | also where we undo the increment of the value for a mips16 symbol. */ | |
7152 | ||
6e0b88f1 | 7153 | int |
9719ad41 RS |
7154 | _bfd_mips_elf_link_output_symbol_hook |
7155 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7156 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7157 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7158 | { |
7159 | /* If we see a common symbol, which implies a relocatable link, then | |
7160 | if a symbol was small common in an input file, mark it as small | |
7161 | common in the output file. */ | |
7162 | if (sym->st_shndx == SHN_COMMON | |
7163 | && strcmp (input_sec->name, ".scommon") == 0) | |
7164 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7165 | ||
df58fc94 | 7166 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7167 | sym->st_value &= ~1; |
b49e97c9 | 7168 | |
6e0b88f1 | 7169 | return 1; |
b49e97c9 TS |
7170 | } |
7171 | \f | |
7172 | /* Functions for the dynamic linker. */ | |
7173 | ||
7174 | /* Create dynamic sections when linking against a dynamic object. */ | |
7175 | ||
b34976b6 | 7176 | bfd_boolean |
9719ad41 | 7177 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
7178 | { |
7179 | struct elf_link_hash_entry *h; | |
14a793b2 | 7180 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7181 | flagword flags; |
7182 | register asection *s; | |
7183 | const char * const *namep; | |
0a44bf69 | 7184 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7185 | |
0a44bf69 | 7186 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7187 | BFD_ASSERT (htab != NULL); |
7188 | ||
b49e97c9 TS |
7189 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
7190 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7191 | ||
0a44bf69 RS |
7192 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
7193 | EABI doesn't. */ | |
7194 | if (!htab->is_vxworks) | |
b49e97c9 | 7195 | { |
3d4d4302 | 7196 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
7197 | if (s != NULL) |
7198 | { | |
7199 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7200 | return FALSE; | |
7201 | } | |
b49e97c9 TS |
7202 | } |
7203 | ||
7204 | /* We need to create .got section. */ | |
23cc69b6 | 7205 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
7206 | return FALSE; |
7207 | ||
0a44bf69 | 7208 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 7209 | return FALSE; |
b49e97c9 | 7210 | |
b49e97c9 | 7211 | /* Create .stub section. */ |
3d4d4302 AM |
7212 | s = bfd_make_section_anyway_with_flags (abfd, |
7213 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
7214 | flags | SEC_CODE); | |
4e41d0d7 RS |
7215 | if (s == NULL |
7216 | || ! bfd_set_section_alignment (abfd, s, | |
7217 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
7218 | return FALSE; | |
7219 | htab->sstubs = s; | |
b49e97c9 | 7220 | |
e6aea42d | 7221 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
b49e97c9 | 7222 | && !info->shared |
3d4d4302 | 7223 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 7224 | { |
3d4d4302 AM |
7225 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
7226 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 7227 | if (s == NULL |
b49e97c9 TS |
7228 | || ! bfd_set_section_alignment (abfd, s, |
7229 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 7230 | return FALSE; |
b49e97c9 TS |
7231 | } |
7232 | ||
7233 | /* On IRIX5, we adjust add some additional symbols and change the | |
7234 | alignments of several sections. There is no ABI documentation | |
7235 | indicating that this is necessary on IRIX6, nor any evidence that | |
7236 | the linker takes such action. */ | |
7237 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
7238 | { | |
7239 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7240 | { | |
14a793b2 | 7241 | bh = NULL; |
b49e97c9 | 7242 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
7243 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
7244 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7245 | return FALSE; |
14a793b2 AM |
7246 | |
7247 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7248 | h->non_elf = 0; |
7249 | h->def_regular = 1; | |
b49e97c9 TS |
7250 | h->type = STT_SECTION; |
7251 | ||
c152c796 | 7252 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7253 | return FALSE; |
b49e97c9 TS |
7254 | } |
7255 | ||
7256 | /* We need to create a .compact_rel section. */ | |
7257 | if (SGI_COMPAT (abfd)) | |
7258 | { | |
7259 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 7260 | return FALSE; |
b49e97c9 TS |
7261 | } |
7262 | ||
44c410de | 7263 | /* Change alignments of some sections. */ |
3d4d4302 | 7264 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 7265 | if (s != NULL) |
a253d456 NC |
7266 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7267 | ||
3d4d4302 | 7268 | s = bfd_get_linker_section (abfd, ".dynsym"); |
b49e97c9 | 7269 | if (s != NULL) |
a253d456 NC |
7270 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7271 | ||
3d4d4302 | 7272 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 7273 | if (s != NULL) |
a253d456 NC |
7274 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7275 | ||
3d4d4302 | 7276 | /* ??? */ |
b49e97c9 TS |
7277 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7278 | if (s != NULL) | |
a253d456 NC |
7279 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
7280 | ||
3d4d4302 | 7281 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 7282 | if (s != NULL) |
a253d456 | 7283 | (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7284 | } |
7285 | ||
7286 | if (!info->shared) | |
7287 | { | |
14a793b2 AM |
7288 | const char *name; |
7289 | ||
7290 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
7291 | bh = NULL; | |
7292 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
7293 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
7294 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7295 | return FALSE; |
14a793b2 AM |
7296 | |
7297 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7298 | h->non_elf = 0; |
7299 | h->def_regular = 1; | |
b49e97c9 TS |
7300 | h->type = STT_SECTION; |
7301 | ||
c152c796 | 7302 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7303 | return FALSE; |
b49e97c9 TS |
7304 | |
7305 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7306 | { | |
7307 | /* __rld_map is a four byte word located in the .data section | |
7308 | and is filled in by the rtld to contain a pointer to | |
7309 | the _r_debug structure. Its symbol value will be set in | |
7310 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 7311 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 7312 | BFD_ASSERT (s != NULL); |
14a793b2 | 7313 | |
0abfb97a L |
7314 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
7315 | bh = NULL; | |
7316 | if (!(_bfd_generic_link_add_one_symbol | |
7317 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
7318 | get_elf_backend_data (abfd)->collect, &bh))) | |
7319 | return FALSE; | |
b49e97c9 | 7320 | |
0abfb97a L |
7321 | h = (struct elf_link_hash_entry *) bh; |
7322 | h->non_elf = 0; | |
7323 | h->def_regular = 1; | |
7324 | h->type = STT_OBJECT; | |
7325 | ||
7326 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7327 | return FALSE; | |
b4082c70 | 7328 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7329 | } |
7330 | } | |
7331 | ||
861fb55a | 7332 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
c164a95d | 7333 | Also, on VxWorks, create the _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
861fb55a DJ |
7334 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
7335 | return FALSE; | |
7336 | ||
7337 | /* Cache the sections created above. */ | |
3d4d4302 AM |
7338 | htab->splt = bfd_get_linker_section (abfd, ".plt"); |
7339 | htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss"); | |
0a44bf69 RS |
7340 | if (htab->is_vxworks) |
7341 | { | |
3d4d4302 AM |
7342 | htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss"); |
7343 | htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt"); | |
861fb55a DJ |
7344 | } |
7345 | else | |
3d4d4302 | 7346 | htab->srelplt = bfd_get_linker_section (abfd, ".rel.plt"); |
861fb55a DJ |
7347 | if (!htab->sdynbss |
7348 | || (htab->is_vxworks && !htab->srelbss && !info->shared) | |
7349 | || !htab->srelplt | |
7350 | || !htab->splt) | |
7351 | abort (); | |
0a44bf69 | 7352 | |
861fb55a DJ |
7353 | if (htab->is_vxworks) |
7354 | { | |
0a44bf69 RS |
7355 | /* Do the usual VxWorks handling. */ |
7356 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
7357 | return FALSE; | |
7358 | ||
7359 | /* Work out the PLT sizes. */ | |
7360 | if (info->shared) | |
7361 | { | |
7362 | htab->plt_header_size | |
7363 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
7364 | htab->plt_entry_size | |
7365 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
7366 | } | |
7367 | else | |
7368 | { | |
7369 | htab->plt_header_size | |
7370 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
7371 | htab->plt_entry_size | |
7372 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
7373 | } | |
7374 | } | |
861fb55a DJ |
7375 | else if (!info->shared) |
7376 | { | |
7377 | /* All variants of the plt0 entry are the same size. */ | |
7378 | htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
7379 | htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
7380 | } | |
0a44bf69 | 7381 | |
b34976b6 | 7382 | return TRUE; |
b49e97c9 TS |
7383 | } |
7384 | \f | |
c224138d RS |
7385 | /* Return true if relocation REL against section SEC is a REL rather than |
7386 | RELA relocation. RELOCS is the first relocation in the section and | |
7387 | ABFD is the bfd that contains SEC. */ | |
7388 | ||
7389 | static bfd_boolean | |
7390 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7391 | const Elf_Internal_Rela *relocs, | |
7392 | const Elf_Internal_Rela *rel) | |
7393 | { | |
7394 | Elf_Internal_Shdr *rel_hdr; | |
7395 | const struct elf_backend_data *bed; | |
7396 | ||
d4730f92 BS |
7397 | /* To determine which flavor of relocation this is, we depend on the |
7398 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
7399 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
7400 | if (rel_hdr == NULL) | |
7401 | return FALSE; | |
c224138d | 7402 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
7403 | return ((size_t) (rel - relocs) |
7404 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
7405 | } |
7406 | ||
7407 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7408 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7409 | of the section that REL is against. */ | |
7410 | ||
7411 | static bfd_vma | |
7412 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7413 | reloc_howto_type *howto, bfd_byte *contents) | |
7414 | { | |
7415 | bfd_byte *location; | |
7416 | unsigned int r_type; | |
7417 | bfd_vma addend; | |
7418 | ||
7419 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7420 | location = contents + rel->r_offset; | |
7421 | ||
7422 | /* Get the addend, which is stored in the input file. */ | |
df58fc94 | 7423 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, FALSE, location); |
c224138d | 7424 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); |
df58fc94 | 7425 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, FALSE, location); |
c224138d RS |
7426 | |
7427 | return addend & howto->src_mask; | |
7428 | } | |
7429 | ||
7430 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7431 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7432 | and update *ADDEND with the final addend. Return true on success | |
7433 | or false if the LO16 could not be found. RELEND is the exclusive | |
7434 | upper bound on the relocations for REL's section. */ | |
7435 | ||
7436 | static bfd_boolean | |
7437 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
7438 | const Elf_Internal_Rela *rel, | |
7439 | const Elf_Internal_Rela *relend, | |
7440 | bfd_byte *contents, bfd_vma *addend) | |
7441 | { | |
7442 | unsigned int r_type, lo16_type; | |
7443 | const Elf_Internal_Rela *lo16_relocation; | |
7444 | reloc_howto_type *lo16_howto; | |
7445 | bfd_vma l; | |
7446 | ||
7447 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 7448 | if (mips16_reloc_p (r_type)) |
c224138d | 7449 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
7450 | else if (micromips_reloc_p (r_type)) |
7451 | lo16_type = R_MICROMIPS_LO16; | |
c224138d RS |
7452 | else |
7453 | lo16_type = R_MIPS_LO16; | |
7454 | ||
7455 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
7456 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
7457 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
7458 | LO16 value.) | |
7459 | ||
7460 | Scan ahead to find a matching LO16 relocation. | |
7461 | ||
7462 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
7463 | be immediately following. However, for the IRIX6 ABI, the next | |
7464 | relocation may be a composed relocation consisting of several | |
7465 | relocations for the same address. In that case, the R_MIPS_LO16 | |
7466 | relocation may occur as one of these. We permit a similar | |
7467 | extension in general, as that is useful for GCC. | |
7468 | ||
7469 | In some cases GCC dead code elimination removes the LO16 but keeps | |
7470 | the corresponding HI16. This is strictly speaking a violation of | |
7471 | the ABI but not immediately harmful. */ | |
7472 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
7473 | if (lo16_relocation == NULL) | |
7474 | return FALSE; | |
7475 | ||
7476 | /* Obtain the addend kept there. */ | |
7477 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
7478 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
7479 | ||
7480 | l <<= lo16_howto->rightshift; | |
7481 | l = _bfd_mips_elf_sign_extend (l, 16); | |
7482 | ||
7483 | *addend <<= 16; | |
7484 | *addend += l; | |
7485 | return TRUE; | |
7486 | } | |
7487 | ||
7488 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
7489 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
7490 | already holds the contents if it is nonull on entry. */ | |
7491 | ||
7492 | static bfd_boolean | |
7493 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
7494 | { | |
7495 | if (*contents) | |
7496 | return TRUE; | |
7497 | ||
7498 | /* Get cached copy if it exists. */ | |
7499 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7500 | { | |
7501 | *contents = elf_section_data (sec)->this_hdr.contents; | |
7502 | return TRUE; | |
7503 | } | |
7504 | ||
7505 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
7506 | } | |
7507 | ||
b49e97c9 TS |
7508 | /* Look through the relocs for a section during the first phase, and |
7509 | allocate space in the global offset table. */ | |
7510 | ||
b34976b6 | 7511 | bfd_boolean |
9719ad41 RS |
7512 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7513 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
7514 | { |
7515 | const char *name; | |
7516 | bfd *dynobj; | |
7517 | Elf_Internal_Shdr *symtab_hdr; | |
7518 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
7519 | size_t extsymoff; |
7520 | const Elf_Internal_Rela *rel; | |
7521 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 7522 | asection *sreloc; |
9c5bfbb7 | 7523 | const struct elf_backend_data *bed; |
0a44bf69 | 7524 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
7525 | bfd_byte *contents; |
7526 | bfd_vma addend; | |
7527 | reloc_howto_type *howto; | |
b49e97c9 | 7528 | |
1049f94e | 7529 | if (info->relocatable) |
b34976b6 | 7530 | return TRUE; |
b49e97c9 | 7531 | |
0a44bf69 | 7532 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7533 | BFD_ASSERT (htab != NULL); |
7534 | ||
b49e97c9 TS |
7535 | dynobj = elf_hash_table (info)->dynobj; |
7536 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7537 | sym_hashes = elf_sym_hashes (abfd); | |
7538 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7539 | ||
738e5348 RS |
7540 | bed = get_elf_backend_data (abfd); |
7541 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
7542 | ||
b49e97c9 TS |
7543 | /* Check for the mips16 stub sections. */ |
7544 | ||
7545 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 7546 | if (FN_STUB_P (name)) |
b49e97c9 TS |
7547 | { |
7548 | unsigned long r_symndx; | |
7549 | ||
7550 | /* Look at the relocation information to figure out which symbol | |
7551 | this is for. */ | |
7552 | ||
cb4437b8 | 7553 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7554 | if (r_symndx == 0) |
7555 | { | |
7556 | (*_bfd_error_handler) | |
7557 | (_("%B: Warning: cannot determine the target function for" | |
7558 | " stub section `%s'"), | |
7559 | abfd, name); | |
7560 | bfd_set_error (bfd_error_bad_value); | |
7561 | return FALSE; | |
7562 | } | |
b49e97c9 TS |
7563 | |
7564 | if (r_symndx < extsymoff | |
7565 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7566 | { | |
7567 | asection *o; | |
7568 | ||
7569 | /* This stub is for a local symbol. This stub will only be | |
7570 | needed if there is some relocation in this BFD, other | |
7571 | than a 16 bit function call, which refers to this symbol. */ | |
7572 | for (o = abfd->sections; o != NULL; o = o->next) | |
7573 | { | |
7574 | Elf_Internal_Rela *sec_relocs; | |
7575 | const Elf_Internal_Rela *r, *rend; | |
7576 | ||
7577 | /* We can ignore stub sections when looking for relocs. */ | |
7578 | if ((o->flags & SEC_RELOC) == 0 | |
7579 | || o->reloc_count == 0 | |
738e5348 | 7580 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
7581 | continue; |
7582 | ||
45d6a902 | 7583 | sec_relocs |
9719ad41 | 7584 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 7585 | info->keep_memory); |
b49e97c9 | 7586 | if (sec_relocs == NULL) |
b34976b6 | 7587 | return FALSE; |
b49e97c9 TS |
7588 | |
7589 | rend = sec_relocs + o->reloc_count; | |
7590 | for (r = sec_relocs; r < rend; r++) | |
7591 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 7592 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
7593 | break; |
7594 | ||
6cdc0ccc | 7595 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
7596 | free (sec_relocs); |
7597 | ||
7598 | if (r < rend) | |
7599 | break; | |
7600 | } | |
7601 | ||
7602 | if (o == NULL) | |
7603 | { | |
7604 | /* There is no non-call reloc for this stub, so we do | |
7605 | not need it. Since this function is called before | |
7606 | the linker maps input sections to output sections, we | |
7607 | can easily discard it by setting the SEC_EXCLUDE | |
7608 | flag. */ | |
7609 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 7610 | return TRUE; |
b49e97c9 TS |
7611 | } |
7612 | ||
7613 | /* Record this stub in an array of local symbol stubs for | |
7614 | this BFD. */ | |
698600e4 | 7615 | if (mips_elf_tdata (abfd)->local_stubs == NULL) |
b49e97c9 TS |
7616 | { |
7617 | unsigned long symcount; | |
7618 | asection **n; | |
7619 | bfd_size_type amt; | |
7620 | ||
7621 | if (elf_bad_symtab (abfd)) | |
7622 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7623 | else | |
7624 | symcount = symtab_hdr->sh_info; | |
7625 | amt = symcount * sizeof (asection *); | |
9719ad41 | 7626 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 7627 | if (n == NULL) |
b34976b6 | 7628 | return FALSE; |
698600e4 | 7629 | mips_elf_tdata (abfd)->local_stubs = n; |
b49e97c9 TS |
7630 | } |
7631 | ||
b9d58d71 | 7632 | sec->flags |= SEC_KEEP; |
698600e4 | 7633 | mips_elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
b49e97c9 TS |
7634 | |
7635 | /* We don't need to set mips16_stubs_seen in this case. | |
7636 | That flag is used to see whether we need to look through | |
7637 | the global symbol table for stubs. We don't need to set | |
7638 | it here, because we just have a local stub. */ | |
7639 | } | |
7640 | else | |
7641 | { | |
7642 | struct mips_elf_link_hash_entry *h; | |
7643 | ||
7644 | h = ((struct mips_elf_link_hash_entry *) | |
7645 | sym_hashes[r_symndx - extsymoff]); | |
7646 | ||
973a3492 L |
7647 | while (h->root.root.type == bfd_link_hash_indirect |
7648 | || h->root.root.type == bfd_link_hash_warning) | |
7649 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
7650 | ||
b49e97c9 TS |
7651 | /* H is the symbol this stub is for. */ |
7652 | ||
b9d58d71 TS |
7653 | /* If we already have an appropriate stub for this function, we |
7654 | don't need another one, so we can discard this one. Since | |
7655 | this function is called before the linker maps input sections | |
7656 | to output sections, we can easily discard it by setting the | |
7657 | SEC_EXCLUDE flag. */ | |
7658 | if (h->fn_stub != NULL) | |
7659 | { | |
7660 | sec->flags |= SEC_EXCLUDE; | |
7661 | return TRUE; | |
7662 | } | |
7663 | ||
7664 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 7665 | h->fn_stub = sec; |
b34976b6 | 7666 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
7667 | } |
7668 | } | |
b9d58d71 | 7669 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
7670 | { |
7671 | unsigned long r_symndx; | |
7672 | struct mips_elf_link_hash_entry *h; | |
7673 | asection **loc; | |
7674 | ||
7675 | /* Look at the relocation information to figure out which symbol | |
7676 | this is for. */ | |
7677 | ||
cb4437b8 | 7678 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7679 | if (r_symndx == 0) |
7680 | { | |
7681 | (*_bfd_error_handler) | |
7682 | (_("%B: Warning: cannot determine the target function for" | |
7683 | " stub section `%s'"), | |
7684 | abfd, name); | |
7685 | bfd_set_error (bfd_error_bad_value); | |
7686 | return FALSE; | |
7687 | } | |
b49e97c9 TS |
7688 | |
7689 | if (r_symndx < extsymoff | |
7690 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7691 | { | |
b9d58d71 | 7692 | asection *o; |
b49e97c9 | 7693 | |
b9d58d71 TS |
7694 | /* This stub is for a local symbol. This stub will only be |
7695 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
7696 | that refers to this symbol. */ | |
7697 | for (o = abfd->sections; o != NULL; o = o->next) | |
7698 | { | |
7699 | Elf_Internal_Rela *sec_relocs; | |
7700 | const Elf_Internal_Rela *r, *rend; | |
7701 | ||
7702 | /* We can ignore stub sections when looking for relocs. */ | |
7703 | if ((o->flags & SEC_RELOC) == 0 | |
7704 | || o->reloc_count == 0 | |
738e5348 | 7705 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
7706 | continue; |
7707 | ||
7708 | sec_relocs | |
7709 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
7710 | info->keep_memory); | |
7711 | if (sec_relocs == NULL) | |
7712 | return FALSE; | |
7713 | ||
7714 | rend = sec_relocs + o->reloc_count; | |
7715 | for (r = sec_relocs; r < rend; r++) | |
7716 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
7717 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
7718 | break; | |
7719 | ||
7720 | if (elf_section_data (o)->relocs != sec_relocs) | |
7721 | free (sec_relocs); | |
7722 | ||
7723 | if (r < rend) | |
7724 | break; | |
7725 | } | |
7726 | ||
7727 | if (o == NULL) | |
7728 | { | |
7729 | /* There is no non-call reloc for this stub, so we do | |
7730 | not need it. Since this function is called before | |
7731 | the linker maps input sections to output sections, we | |
7732 | can easily discard it by setting the SEC_EXCLUDE | |
7733 | flag. */ | |
7734 | sec->flags |= SEC_EXCLUDE; | |
7735 | return TRUE; | |
7736 | } | |
7737 | ||
7738 | /* Record this stub in an array of local symbol call_stubs for | |
7739 | this BFD. */ | |
698600e4 | 7740 | if (mips_elf_tdata (abfd)->local_call_stubs == NULL) |
b9d58d71 TS |
7741 | { |
7742 | unsigned long symcount; | |
7743 | asection **n; | |
7744 | bfd_size_type amt; | |
7745 | ||
7746 | if (elf_bad_symtab (abfd)) | |
7747 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7748 | else | |
7749 | symcount = symtab_hdr->sh_info; | |
7750 | amt = symcount * sizeof (asection *); | |
7751 | n = bfd_zalloc (abfd, amt); | |
7752 | if (n == NULL) | |
7753 | return FALSE; | |
698600e4 | 7754 | mips_elf_tdata (abfd)->local_call_stubs = n; |
b9d58d71 | 7755 | } |
b49e97c9 | 7756 | |
b9d58d71 | 7757 | sec->flags |= SEC_KEEP; |
698600e4 | 7758 | mips_elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; |
b49e97c9 | 7759 | |
b9d58d71 TS |
7760 | /* We don't need to set mips16_stubs_seen in this case. |
7761 | That flag is used to see whether we need to look through | |
7762 | the global symbol table for stubs. We don't need to set | |
7763 | it here, because we just have a local stub. */ | |
7764 | } | |
b49e97c9 | 7765 | else |
b49e97c9 | 7766 | { |
b9d58d71 TS |
7767 | h = ((struct mips_elf_link_hash_entry *) |
7768 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 7769 | |
b9d58d71 | 7770 | /* H is the symbol this stub is for. */ |
68ffbac6 | 7771 | |
b9d58d71 TS |
7772 | if (CALL_FP_STUB_P (name)) |
7773 | loc = &h->call_fp_stub; | |
7774 | else | |
7775 | loc = &h->call_stub; | |
68ffbac6 | 7776 | |
b9d58d71 TS |
7777 | /* If we already have an appropriate stub for this function, we |
7778 | don't need another one, so we can discard this one. Since | |
7779 | this function is called before the linker maps input sections | |
7780 | to output sections, we can easily discard it by setting the | |
7781 | SEC_EXCLUDE flag. */ | |
7782 | if (*loc != NULL) | |
7783 | { | |
7784 | sec->flags |= SEC_EXCLUDE; | |
7785 | return TRUE; | |
7786 | } | |
b49e97c9 | 7787 | |
b9d58d71 TS |
7788 | sec->flags |= SEC_KEEP; |
7789 | *loc = sec; | |
7790 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
7791 | } | |
b49e97c9 TS |
7792 | } |
7793 | ||
b49e97c9 | 7794 | sreloc = NULL; |
c224138d | 7795 | contents = NULL; |
b49e97c9 TS |
7796 | for (rel = relocs; rel < rel_end; ++rel) |
7797 | { | |
7798 | unsigned long r_symndx; | |
7799 | unsigned int r_type; | |
7800 | struct elf_link_hash_entry *h; | |
861fb55a | 7801 | bfd_boolean can_make_dynamic_p; |
b49e97c9 TS |
7802 | |
7803 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
7804 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7805 | ||
7806 | if (r_symndx < extsymoff) | |
7807 | h = NULL; | |
7808 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
7809 | { | |
7810 | (*_bfd_error_handler) | |
d003868e AM |
7811 | (_("%B: Malformed reloc detected for section %s"), |
7812 | abfd, name); | |
b49e97c9 | 7813 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7814 | return FALSE; |
b49e97c9 TS |
7815 | } |
7816 | else | |
7817 | { | |
7818 | h = sym_hashes[r_symndx - extsymoff]; | |
81fbe831 AM |
7819 | if (h != NULL) |
7820 | { | |
7821 | while (h->root.type == bfd_link_hash_indirect | |
7822 | || h->root.type == bfd_link_hash_warning) | |
7823 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7824 | ||
7825 | /* PR15323, ref flags aren't set for references in the | |
7826 | same object. */ | |
7827 | h->root.non_ir_ref = 1; | |
7828 | } | |
861fb55a | 7829 | } |
b49e97c9 | 7830 | |
861fb55a DJ |
7831 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
7832 | relocation into a dynamic one. */ | |
7833 | can_make_dynamic_p = FALSE; | |
7834 | switch (r_type) | |
7835 | { | |
861fb55a DJ |
7836 | case R_MIPS_GOT16: |
7837 | case R_MIPS_CALL16: | |
7838 | case R_MIPS_CALL_HI16: | |
7839 | case R_MIPS_CALL_LO16: | |
7840 | case R_MIPS_GOT_HI16: | |
7841 | case R_MIPS_GOT_LO16: | |
7842 | case R_MIPS_GOT_PAGE: | |
7843 | case R_MIPS_GOT_OFST: | |
7844 | case R_MIPS_GOT_DISP: | |
7845 | case R_MIPS_TLS_GOTTPREL: | |
7846 | case R_MIPS_TLS_GD: | |
7847 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
7848 | case R_MIPS16_GOT16: |
7849 | case R_MIPS16_CALL16: | |
7850 | case R_MIPS16_TLS_GOTTPREL: | |
7851 | case R_MIPS16_TLS_GD: | |
7852 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
7853 | case R_MICROMIPS_GOT16: |
7854 | case R_MICROMIPS_CALL16: | |
7855 | case R_MICROMIPS_CALL_HI16: | |
7856 | case R_MICROMIPS_CALL_LO16: | |
7857 | case R_MICROMIPS_GOT_HI16: | |
7858 | case R_MICROMIPS_GOT_LO16: | |
7859 | case R_MICROMIPS_GOT_PAGE: | |
7860 | case R_MICROMIPS_GOT_OFST: | |
7861 | case R_MICROMIPS_GOT_DISP: | |
7862 | case R_MICROMIPS_TLS_GOTTPREL: | |
7863 | case R_MICROMIPS_TLS_GD: | |
7864 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
7865 | if (dynobj == NULL) |
7866 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7867 | if (!mips_elf_create_got_section (dynobj, info)) | |
7868 | return FALSE; | |
7869 | if (htab->is_vxworks && !info->shared) | |
b49e97c9 | 7870 | { |
861fb55a DJ |
7871 | (*_bfd_error_handler) |
7872 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
7873 | abfd, (unsigned long) rel->r_offset); | |
7874 | bfd_set_error (bfd_error_bad_value); | |
7875 | return FALSE; | |
b49e97c9 | 7876 | } |
861fb55a | 7877 | break; |
b49e97c9 | 7878 | |
99da6b5f AN |
7879 | /* This is just a hint; it can safely be ignored. Don't set |
7880 | has_static_relocs for the corresponding symbol. */ | |
7881 | case R_MIPS_JALR: | |
df58fc94 | 7882 | case R_MICROMIPS_JALR: |
99da6b5f AN |
7883 | break; |
7884 | ||
861fb55a DJ |
7885 | case R_MIPS_32: |
7886 | case R_MIPS_REL32: | |
7887 | case R_MIPS_64: | |
7888 | /* In VxWorks executables, references to external symbols | |
7889 | must be handled using copy relocs or PLT entries; it is not | |
7890 | possible to convert this relocation into a dynamic one. | |
7891 | ||
7892 | For executables that use PLTs and copy-relocs, we have a | |
7893 | choice between converting the relocation into a dynamic | |
7894 | one or using copy relocations or PLT entries. It is | |
7895 | usually better to do the former, unless the relocation is | |
7896 | against a read-only section. */ | |
7897 | if ((info->shared | |
7898 | || (h != NULL | |
7899 | && !htab->is_vxworks | |
7900 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
7901 | && !(!info->nocopyreloc | |
7902 | && !PIC_OBJECT_P (abfd) | |
7903 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
7904 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 7905 | { |
861fb55a | 7906 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
7907 | if (dynobj == NULL) |
7908 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
b49e97c9 | 7909 | break; |
861fb55a | 7910 | } |
21d790b9 MR |
7911 | /* For sections that are not SEC_ALLOC a copy reloc would be |
7912 | output if possible (implying questionable semantics for | |
7913 | read-only data objects) or otherwise the final link would | |
7914 | fail as ld.so will not process them and could not therefore | |
7915 | handle any outstanding dynamic relocations. | |
7916 | ||
7917 | For such sections that are also SEC_DEBUGGING, we can avoid | |
7918 | these problems by simply ignoring any relocs as these | |
7919 | sections have a predefined use and we know it is safe to do | |
7920 | so. | |
7921 | ||
7922 | This is needed in cases such as a global symbol definition | |
7923 | in a shared library causing a common symbol from an object | |
7924 | file to be converted to an undefined reference. If that | |
7925 | happens, then all the relocations against this symbol from | |
7926 | SEC_DEBUGGING sections in the object file will resolve to | |
7927 | nil. */ | |
7928 | if ((sec->flags & SEC_DEBUGGING) != 0) | |
7929 | break; | |
861fb55a | 7930 | /* Fall through. */ |
b49e97c9 | 7931 | |
861fb55a DJ |
7932 | default: |
7933 | /* Most static relocations require pointer equality, except | |
7934 | for branches. */ | |
7935 | if (h) | |
7936 | h->pointer_equality_needed = TRUE; | |
7937 | /* Fall through. */ | |
b49e97c9 | 7938 | |
861fb55a DJ |
7939 | case R_MIPS_26: |
7940 | case R_MIPS_PC16: | |
7941 | case R_MIPS16_26: | |
df58fc94 RS |
7942 | case R_MICROMIPS_26_S1: |
7943 | case R_MICROMIPS_PC7_S1: | |
7944 | case R_MICROMIPS_PC10_S1: | |
7945 | case R_MICROMIPS_PC16_S1: | |
7946 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
7947 | if (h) |
7948 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE; | |
7949 | break; | |
b49e97c9 TS |
7950 | } |
7951 | ||
0a44bf69 RS |
7952 | if (h) |
7953 | { | |
0a44bf69 RS |
7954 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
7955 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
7956 | room for them in .rela.dyn. */ | |
7957 | if (is_gott_symbol (info, h)) | |
7958 | { | |
7959 | if (sreloc == NULL) | |
7960 | { | |
7961 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
7962 | if (sreloc == NULL) | |
7963 | return FALSE; | |
7964 | } | |
7965 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
7966 | if (MIPS_ELF_READONLY_SECTION (sec)) |
7967 | /* We tell the dynamic linker that there are | |
7968 | relocations against the text segment. */ | |
7969 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
7970 | } |
7971 | } | |
df58fc94 RS |
7972 | else if (call_lo16_reloc_p (r_type) |
7973 | || got_lo16_reloc_p (r_type) | |
7974 | || got_disp_reloc_p (r_type) | |
738e5348 | 7975 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
7976 | { |
7977 | /* We may need a local GOT entry for this relocation. We | |
7978 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
7979 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
7980 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
7981 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 7982 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 7983 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 7984 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 | 7985 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
e641e783 | 7986 | rel->r_addend, info, r_type)) |
f4416af6 | 7987 | return FALSE; |
b49e97c9 TS |
7988 | } |
7989 | ||
8f0c309a CLT |
7990 | if (h != NULL |
7991 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
7992 | ELF_ST_IS_MIPS16 (h->other))) | |
861fb55a DJ |
7993 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; |
7994 | ||
b49e97c9 TS |
7995 | switch (r_type) |
7996 | { | |
7997 | case R_MIPS_CALL16: | |
738e5348 | 7998 | case R_MIPS16_CALL16: |
df58fc94 | 7999 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8000 | if (h == NULL) |
8001 | { | |
8002 | (*_bfd_error_handler) | |
d003868e AM |
8003 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
8004 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 8005 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8006 | return FALSE; |
b49e97c9 TS |
8007 | } |
8008 | /* Fall through. */ | |
8009 | ||
8010 | case R_MIPS_CALL_HI16: | |
8011 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8012 | case R_MICROMIPS_CALL_HI16: |
8013 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8014 | if (h != NULL) |
8015 | { | |
6ccf4795 RS |
8016 | /* Make sure there is room in the regular GOT to hold the |
8017 | function's address. We may eliminate it in favour of | |
8018 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
e641e783 RS |
8019 | if (!mips_elf_record_global_got_symbol (h, abfd, info, TRUE, |
8020 | r_type)) | |
b34976b6 | 8021 | return FALSE; |
b49e97c9 TS |
8022 | |
8023 | /* We need a stub, not a plt entry for the undefined | |
8024 | function. But we record it as if it needs plt. See | |
c152c796 | 8025 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8026 | h->needs_plt = 1; |
b49e97c9 TS |
8027 | h->type = STT_FUNC; |
8028 | } | |
8029 | break; | |
8030 | ||
0fdc1bf1 | 8031 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8032 | case R_MICROMIPS_GOT_PAGE: |
738e5348 | 8033 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8034 | case R_MIPS_GOT16: |
8035 | case R_MIPS_GOT_HI16: | |
8036 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8037 | case R_MICROMIPS_GOT16: |
8038 | case R_MICROMIPS_GOT_HI16: | |
8039 | case R_MICROMIPS_GOT_LO16: | |
8040 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8041 | { |
3a3b6725 DJ |
8042 | /* This relocation needs (or may need, if h != NULL) a |
8043 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8044 | know for sure until we know whether the symbol is | |
8045 | preemptible. */ | |
c224138d RS |
8046 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8047 | { | |
8048 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8049 | return FALSE; | |
8050 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
8051 | addend = mips_elf_read_rel_addend (abfd, rel, | |
8052 | howto, contents); | |
9684f078 | 8053 | if (got16_reloc_p (r_type)) |
c224138d RS |
8054 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, |
8055 | contents, &addend); | |
8056 | else | |
8057 | addend <<= howto->rightshift; | |
8058 | } | |
8059 | else | |
8060 | addend = rel->r_addend; | |
13db6b44 RS |
8061 | if (!mips_elf_record_got_page_ref (info, abfd, r_symndx, |
8062 | h, addend)) | |
c224138d | 8063 | return FALSE; |
13db6b44 RS |
8064 | |
8065 | if (h) | |
8066 | { | |
8067 | struct mips_elf_link_hash_entry *hmips = | |
8068 | (struct mips_elf_link_hash_entry *) h; | |
8069 | ||
8070 | /* This symbol is definitely not overridable. */ | |
8071 | if (hmips->root.def_regular | |
8072 | && ! (info->shared && ! info->symbolic | |
8073 | && ! hmips->root.forced_local)) | |
8074 | h = NULL; | |
8075 | } | |
c224138d | 8076 | } |
13db6b44 RS |
8077 | /* If this is a global, overridable symbol, GOT_PAGE will |
8078 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d RS |
8079 | /* Fall through. */ |
8080 | ||
b49e97c9 | 8081 | case R_MIPS_GOT_DISP: |
df58fc94 | 8082 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 | 8083 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
e641e783 | 8084 | FALSE, r_type)) |
b34976b6 | 8085 | return FALSE; |
b49e97c9 TS |
8086 | break; |
8087 | ||
0f20cc35 | 8088 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 8089 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 8090 | case R_MICROMIPS_TLS_GOTTPREL: |
0f20cc35 DJ |
8091 | if (info->shared) |
8092 | info->flags |= DF_STATIC_TLS; | |
8093 | /* Fall through */ | |
8094 | ||
8095 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8096 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
8097 | case R_MICROMIPS_TLS_LDM: |
8098 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 8099 | { |
cf35638d | 8100 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
8101 | h = NULL; |
8102 | } | |
8103 | /* Fall through */ | |
8104 | ||
8105 | case R_MIPS_TLS_GD: | |
d0f13682 | 8106 | case R_MIPS16_TLS_GD: |
df58fc94 | 8107 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
8108 | /* This symbol requires a global offset table entry, or two |
8109 | for TLS GD relocations. */ | |
e641e783 RS |
8110 | if (h != NULL) |
8111 | { | |
8112 | if (!mips_elf_record_global_got_symbol (h, abfd, info, | |
8113 | FALSE, r_type)) | |
8114 | return FALSE; | |
8115 | } | |
8116 | else | |
8117 | { | |
8118 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, | |
8119 | rel->r_addend, | |
8120 | info, r_type)) | |
8121 | return FALSE; | |
8122 | } | |
0f20cc35 DJ |
8123 | break; |
8124 | ||
b49e97c9 TS |
8125 | case R_MIPS_32: |
8126 | case R_MIPS_REL32: | |
8127 | case R_MIPS_64: | |
0a44bf69 RS |
8128 | /* In VxWorks executables, references to external symbols |
8129 | are handled using copy relocs or PLT stubs, so there's | |
8130 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 8131 | if (can_make_dynamic_p) |
b49e97c9 TS |
8132 | { |
8133 | if (sreloc == NULL) | |
8134 | { | |
0a44bf69 | 8135 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 8136 | if (sreloc == NULL) |
f4416af6 | 8137 | return FALSE; |
b49e97c9 | 8138 | } |
9a59ad6b | 8139 | if (info->shared && h == NULL) |
82f0cfbd EC |
8140 | { |
8141 | /* When creating a shared object, we must copy these | |
8142 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
8143 | relocs. Make room for this reloc in .rel(a).dyn. */ |
8144 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 8145 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8146 | /* We tell the dynamic linker that there are |
8147 | relocations against the text segment. */ | |
8148 | info->flags |= DF_TEXTREL; | |
8149 | } | |
b49e97c9 TS |
8150 | else |
8151 | { | |
8152 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 8153 | |
9a59ad6b DJ |
8154 | /* For a shared object, we must copy this relocation |
8155 | unless the symbol turns out to be undefined and | |
8156 | weak with non-default visibility, in which case | |
8157 | it will be left as zero. | |
8158 | ||
8159 | We could elide R_MIPS_REL32 for locally binding symbols | |
8160 | in shared libraries, but do not yet do so. | |
8161 | ||
8162 | For an executable, we only need to copy this | |
8163 | reloc if the symbol is defined in a dynamic | |
8164 | object. */ | |
b49e97c9 TS |
8165 | hmips = (struct mips_elf_link_hash_entry *) h; |
8166 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 8167 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8168 | /* We need it to tell the dynamic linker if there |
8169 | are relocations against the text segment. */ | |
8170 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 8171 | } |
b49e97c9 TS |
8172 | } |
8173 | ||
8174 | if (SGI_COMPAT (abfd)) | |
8175 | mips_elf_hash_table (info)->compact_rel_size += | |
8176 | sizeof (Elf32_External_crinfo); | |
8177 | break; | |
8178 | ||
8179 | case R_MIPS_26: | |
8180 | case R_MIPS_GPREL16: | |
8181 | case R_MIPS_LITERAL: | |
8182 | case R_MIPS_GPREL32: | |
df58fc94 RS |
8183 | case R_MICROMIPS_26_S1: |
8184 | case R_MICROMIPS_GPREL16: | |
8185 | case R_MICROMIPS_LITERAL: | |
8186 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
8187 | if (SGI_COMPAT (abfd)) |
8188 | mips_elf_hash_table (info)->compact_rel_size += | |
8189 | sizeof (Elf32_External_crinfo); | |
8190 | break; | |
8191 | ||
8192 | /* This relocation describes the C++ object vtable hierarchy. | |
8193 | Reconstruct it for later use during GC. */ | |
8194 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 8195 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 8196 | return FALSE; |
b49e97c9 TS |
8197 | break; |
8198 | ||
8199 | /* This relocation describes which C++ vtable entries are actually | |
8200 | used. Record for later use during GC. */ | |
8201 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
8202 | BFD_ASSERT (h != NULL); |
8203 | if (h != NULL | |
8204 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 8205 | return FALSE; |
b49e97c9 TS |
8206 | break; |
8207 | ||
8208 | default: | |
8209 | break; | |
8210 | } | |
8211 | ||
8212 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
8213 | related to taking the function's address. This doesn't apply to |
8214 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
8215 | a normal .got entry. */ | |
8216 | if (!htab->is_vxworks && h != NULL) | |
8217 | switch (r_type) | |
8218 | { | |
8219 | default: | |
8220 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
8221 | break; | |
738e5348 | 8222 | case R_MIPS16_CALL16: |
0a44bf69 RS |
8223 | case R_MIPS_CALL16: |
8224 | case R_MIPS_CALL_HI16: | |
8225 | case R_MIPS_CALL_LO16: | |
8226 | case R_MIPS_JALR: | |
df58fc94 RS |
8227 | case R_MICROMIPS_CALL16: |
8228 | case R_MICROMIPS_CALL_HI16: | |
8229 | case R_MICROMIPS_CALL_LO16: | |
8230 | case R_MICROMIPS_JALR: | |
0a44bf69 RS |
8231 | break; |
8232 | } | |
b49e97c9 | 8233 | |
738e5348 RS |
8234 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
8235 | if there is one. We only need to handle global symbols here; | |
8236 | we decide whether to keep or delete stubs for local symbols | |
8237 | when processing the stub's relocations. */ | |
b49e97c9 | 8238 | if (h != NULL |
738e5348 RS |
8239 | && !mips16_call_reloc_p (r_type) |
8240 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
8241 | { |
8242 | struct mips_elf_link_hash_entry *mh; | |
8243 | ||
8244 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 8245 | mh->need_fn_stub = TRUE; |
b49e97c9 | 8246 | } |
861fb55a DJ |
8247 | |
8248 | /* Refuse some position-dependent relocations when creating a | |
8249 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
8250 | not PIC, but we can create dynamic relocations and the result | |
8251 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
8252 | combined with R_MIPS_GOT16. */ | |
8253 | if (info->shared) | |
8254 | { | |
8255 | switch (r_type) | |
8256 | { | |
8257 | case R_MIPS16_HI16: | |
8258 | case R_MIPS_HI16: | |
8259 | case R_MIPS_HIGHER: | |
8260 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
8261 | case R_MICROMIPS_HI16: |
8262 | case R_MICROMIPS_HIGHER: | |
8263 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
8264 | /* Don't refuse a high part relocation if it's against |
8265 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 8266 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
8267 | break; |
8268 | ||
8269 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
8270 | and has a special meaning. */ | |
8271 | if (!NEWABI_P (abfd) && h != NULL | |
8272 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
8273 | break; | |
8274 | ||
0fc1eb3c RS |
8275 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
8276 | if (is_gott_symbol (info, h)) | |
8277 | break; | |
8278 | ||
861fb55a DJ |
8279 | /* FALLTHROUGH */ |
8280 | ||
8281 | case R_MIPS16_26: | |
8282 | case R_MIPS_26: | |
df58fc94 | 8283 | case R_MICROMIPS_26_S1: |
861fb55a DJ |
8284 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); |
8285 | (*_bfd_error_handler) | |
8286 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
8287 | abfd, howto->name, | |
8288 | (h) ? h->root.root.string : "a local symbol"); | |
8289 | bfd_set_error (bfd_error_bad_value); | |
8290 | return FALSE; | |
8291 | default: | |
8292 | break; | |
8293 | } | |
8294 | } | |
b49e97c9 TS |
8295 | } |
8296 | ||
b34976b6 | 8297 | return TRUE; |
b49e97c9 TS |
8298 | } |
8299 | \f | |
d0647110 | 8300 | bfd_boolean |
9719ad41 RS |
8301 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
8302 | struct bfd_link_info *link_info, | |
8303 | bfd_boolean *again) | |
d0647110 AO |
8304 | { |
8305 | Elf_Internal_Rela *internal_relocs; | |
8306 | Elf_Internal_Rela *irel, *irelend; | |
8307 | Elf_Internal_Shdr *symtab_hdr; | |
8308 | bfd_byte *contents = NULL; | |
d0647110 AO |
8309 | size_t extsymoff; |
8310 | bfd_boolean changed_contents = FALSE; | |
8311 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
8312 | Elf_Internal_Sym *isymbuf = NULL; | |
8313 | ||
8314 | /* We are not currently changing any sizes, so only one pass. */ | |
8315 | *again = FALSE; | |
8316 | ||
1049f94e | 8317 | if (link_info->relocatable) |
d0647110 AO |
8318 | return TRUE; |
8319 | ||
9719ad41 | 8320 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 8321 | link_info->keep_memory); |
d0647110 AO |
8322 | if (internal_relocs == NULL) |
8323 | return TRUE; | |
8324 | ||
8325 | irelend = internal_relocs + sec->reloc_count | |
8326 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
8327 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8328 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8329 | ||
8330 | for (irel = internal_relocs; irel < irelend; irel++) | |
8331 | { | |
8332 | bfd_vma symval; | |
8333 | bfd_signed_vma sym_offset; | |
8334 | unsigned int r_type; | |
8335 | unsigned long r_symndx; | |
8336 | asection *sym_sec; | |
8337 | unsigned long instruction; | |
8338 | ||
8339 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
8340 | with a JALR relocation, that indicate where they jump to. | |
8341 | This saves some pipeline bubbles. */ | |
8342 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
8343 | if (r_type != R_MIPS_JALR) | |
8344 | continue; | |
8345 | ||
8346 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
8347 | /* Compute the address of the jump target. */ | |
8348 | if (r_symndx >= extsymoff) | |
8349 | { | |
8350 | struct mips_elf_link_hash_entry *h | |
8351 | = ((struct mips_elf_link_hash_entry *) | |
8352 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
8353 | ||
8354 | while (h->root.root.type == bfd_link_hash_indirect | |
8355 | || h->root.root.type == bfd_link_hash_warning) | |
8356 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 8357 | |
d0647110 AO |
8358 | /* If a symbol is undefined, or if it may be overridden, |
8359 | skip it. */ | |
8360 | if (! ((h->root.root.type == bfd_link_hash_defined | |
8361 | || h->root.root.type == bfd_link_hash_defweak) | |
8362 | && h->root.root.u.def.section) | |
8363 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 8364 | && !h->root.forced_local)) |
d0647110 AO |
8365 | continue; |
8366 | ||
8367 | sym_sec = h->root.root.u.def.section; | |
8368 | if (sym_sec->output_section) | |
8369 | symval = (h->root.root.u.def.value | |
8370 | + sym_sec->output_section->vma | |
8371 | + sym_sec->output_offset); | |
8372 | else | |
8373 | symval = h->root.root.u.def.value; | |
8374 | } | |
8375 | else | |
8376 | { | |
8377 | Elf_Internal_Sym *isym; | |
8378 | ||
8379 | /* Read this BFD's symbols if we haven't done so already. */ | |
8380 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
8381 | { | |
8382 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8383 | if (isymbuf == NULL) | |
8384 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8385 | symtab_hdr->sh_info, 0, | |
8386 | NULL, NULL, NULL); | |
8387 | if (isymbuf == NULL) | |
8388 | goto relax_return; | |
8389 | } | |
8390 | ||
8391 | isym = isymbuf + r_symndx; | |
8392 | if (isym->st_shndx == SHN_UNDEF) | |
8393 | continue; | |
8394 | else if (isym->st_shndx == SHN_ABS) | |
8395 | sym_sec = bfd_abs_section_ptr; | |
8396 | else if (isym->st_shndx == SHN_COMMON) | |
8397 | sym_sec = bfd_com_section_ptr; | |
8398 | else | |
8399 | sym_sec | |
8400 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8401 | symval = isym->st_value | |
8402 | + sym_sec->output_section->vma | |
8403 | + sym_sec->output_offset; | |
8404 | } | |
8405 | ||
8406 | /* Compute branch offset, from delay slot of the jump to the | |
8407 | branch target. */ | |
8408 | sym_offset = (symval + irel->r_addend) | |
8409 | - (sec_start + irel->r_offset + 4); | |
8410 | ||
8411 | /* Branch offset must be properly aligned. */ | |
8412 | if ((sym_offset & 3) != 0) | |
8413 | continue; | |
8414 | ||
8415 | sym_offset >>= 2; | |
8416 | ||
8417 | /* Check that it's in range. */ | |
8418 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
8419 | continue; | |
143d77c5 | 8420 | |
d0647110 | 8421 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
8422 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
8423 | goto relax_return; | |
d0647110 AO |
8424 | |
8425 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
8426 | ||
8427 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
8428 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
8429 | instruction = 0x04110000; | |
8430 | /* If it was jr <reg>, turn it into b <target>. */ | |
8431 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
8432 | instruction = 0x10000000; | |
8433 | else | |
8434 | continue; | |
8435 | ||
8436 | instruction |= (sym_offset & 0xffff); | |
8437 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
8438 | changed_contents = TRUE; | |
8439 | } | |
8440 | ||
8441 | if (contents != NULL | |
8442 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8443 | { | |
8444 | if (!changed_contents && !link_info->keep_memory) | |
8445 | free (contents); | |
8446 | else | |
8447 | { | |
8448 | /* Cache the section contents for elf_link_input_bfd. */ | |
8449 | elf_section_data (sec)->this_hdr.contents = contents; | |
8450 | } | |
8451 | } | |
8452 | return TRUE; | |
8453 | ||
143d77c5 | 8454 | relax_return: |
eea6121a AM |
8455 | if (contents != NULL |
8456 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8457 | free (contents); | |
d0647110 AO |
8458 | return FALSE; |
8459 | } | |
8460 | \f | |
9a59ad6b DJ |
8461 | /* Allocate space for global sym dynamic relocs. */ |
8462 | ||
8463 | static bfd_boolean | |
8464 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8465 | { | |
8466 | struct bfd_link_info *info = inf; | |
8467 | bfd *dynobj; | |
8468 | struct mips_elf_link_hash_entry *hmips; | |
8469 | struct mips_elf_link_hash_table *htab; | |
8470 | ||
8471 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8472 | BFD_ASSERT (htab != NULL); |
8473 | ||
9a59ad6b DJ |
8474 | dynobj = elf_hash_table (info)->dynobj; |
8475 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8476 | ||
8477 | /* VxWorks executables are handled elsewhere; we only need to | |
8478 | allocate relocations in shared objects. */ | |
8479 | if (htab->is_vxworks && !info->shared) | |
8480 | return TRUE; | |
8481 | ||
7686d77d AM |
8482 | /* Ignore indirect symbols. All relocations against such symbols |
8483 | will be redirected to the target symbol. */ | |
8484 | if (h->root.type == bfd_link_hash_indirect) | |
63897e2c RS |
8485 | return TRUE; |
8486 | ||
9a59ad6b DJ |
8487 | /* If this symbol is defined in a dynamic object, or we are creating |
8488 | a shared library, we will need to copy any R_MIPS_32 or | |
8489 | R_MIPS_REL32 relocs against it into the output file. */ | |
8490 | if (! info->relocatable | |
8491 | && hmips->possibly_dynamic_relocs != 0 | |
8492 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 8493 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
9a59ad6b DJ |
8494 | || info->shared)) |
8495 | { | |
8496 | bfd_boolean do_copy = TRUE; | |
8497 | ||
8498 | if (h->root.type == bfd_link_hash_undefweak) | |
8499 | { | |
8500 | /* Do not copy relocations for undefined weak symbols with | |
8501 | non-default visibility. */ | |
8502 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8503 | do_copy = FALSE; | |
8504 | ||
8505 | /* Make sure undefined weak symbols are output as a dynamic | |
8506 | symbol in PIEs. */ | |
8507 | else if (h->dynindx == -1 && !h->forced_local) | |
8508 | { | |
8509 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8510 | return FALSE; | |
8511 | } | |
8512 | } | |
8513 | ||
8514 | if (do_copy) | |
8515 | { | |
aff469fa | 8516 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
8517 | the SVR4 psABI requires it to have a dynamic symbol table |
8518 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
8519 | relocations against it. | |
8520 | ||
8521 | VxWorks does not enforce the same mapping between the GOT | |
8522 | and the symbol table, so the same requirement does not | |
8523 | apply there. */ | |
6ccf4795 RS |
8524 | if (!htab->is_vxworks) |
8525 | { | |
8526 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8527 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8528 | hmips->got_only_for_calls = FALSE; | |
8529 | } | |
aff469fa | 8530 | |
9a59ad6b DJ |
8531 | mips_elf_allocate_dynamic_relocations |
8532 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8533 | if (hmips->readonly_reloc) | |
8534 | /* We tell the dynamic linker that there are relocations | |
8535 | against the text segment. */ | |
8536 | info->flags |= DF_TEXTREL; | |
8537 | } | |
8538 | } | |
8539 | ||
8540 | return TRUE; | |
8541 | } | |
8542 | ||
b49e97c9 TS |
8543 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8544 | regular object. The current definition is in some section of the | |
8545 | dynamic object, but we're not including those sections. We have to | |
8546 | change the definition to something the rest of the link can | |
8547 | understand. */ | |
8548 | ||
b34976b6 | 8549 | bfd_boolean |
9719ad41 RS |
8550 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
8551 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
8552 | { |
8553 | bfd *dynobj; | |
8554 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 8555 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8556 | |
5108fc1b | 8557 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8558 | BFD_ASSERT (htab != NULL); |
8559 | ||
b49e97c9 | 8560 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 8561 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
8562 | |
8563 | /* Make sure we know what is going on here. */ | |
8564 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8565 | && (h->needs_plt |
f6e332e6 | 8566 | || h->u.weakdef != NULL |
f5385ebf AM |
8567 | || (h->def_dynamic |
8568 | && h->ref_regular | |
8569 | && !h->def_regular))); | |
b49e97c9 | 8570 | |
b49e97c9 | 8571 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8572 | |
861fb55a DJ |
8573 | /* If there are call relocations against an externally-defined symbol, |
8574 | see whether we can create a MIPS lazy-binding stub for it. We can | |
8575 | only do this if all references to the function are through call | |
8576 | relocations, and in that case, the traditional lazy-binding stubs | |
8577 | are much more efficient than PLT entries. | |
8578 | ||
8579 | Traditional stubs are only available on SVR4 psABI-based systems; | |
8580 | VxWorks always uses PLTs instead. */ | |
8581 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
8582 | { |
8583 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 8584 | return TRUE; |
b49e97c9 TS |
8585 | |
8586 | /* If this symbol is not defined in a regular file, then set | |
8587 | the symbol to the stub location. This is required to make | |
8588 | function pointers compare as equal between the normal | |
8589 | executable and the shared library. */ | |
f5385ebf | 8590 | if (!h->def_regular) |
b49e97c9 | 8591 | { |
33bb52fb RS |
8592 | hmips->needs_lazy_stub = TRUE; |
8593 | htab->lazy_stub_count++; | |
b34976b6 | 8594 | return TRUE; |
b49e97c9 TS |
8595 | } |
8596 | } | |
861fb55a DJ |
8597 | /* As above, VxWorks requires PLT entries for externally-defined |
8598 | functions that are only accessed through call relocations. | |
b49e97c9 | 8599 | |
861fb55a DJ |
8600 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
8601 | are static-only relocations against an externally-defined function. | |
8602 | This can technically occur for shared libraries if there are | |
8603 | branches to the symbol, although it is unlikely that this will be | |
8604 | used in practice due to the short ranges involved. It can occur | |
8605 | for any relative or absolute relocation in executables; in that | |
8606 | case, the PLT entry becomes the function's canonical address. */ | |
8607 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
8608 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
8609 | && htab->use_plts_and_copy_relocs | |
8610 | && !SYMBOL_CALLS_LOCAL (info, h) | |
8611 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8612 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 8613 | { |
861fb55a DJ |
8614 | /* If this is the first symbol to need a PLT entry, allocate room |
8615 | for the header. */ | |
8616 | if (htab->splt->size == 0) | |
8617 | { | |
8618 | BFD_ASSERT (htab->sgotplt->size == 0); | |
0a44bf69 | 8619 | |
861fb55a DJ |
8620 | /* If we're using the PLT additions to the psABI, each PLT |
8621 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
8622 | Encourage better cache usage by aligning. We do this | |
8623 | lazily to avoid pessimizing traditional objects. */ | |
8624 | if (!htab->is_vxworks | |
8625 | && !bfd_set_section_alignment (dynobj, htab->splt, 5)) | |
8626 | return FALSE; | |
0a44bf69 | 8627 | |
861fb55a DJ |
8628 | /* Make sure that .got.plt is word-aligned. We do this lazily |
8629 | for the same reason as above. */ | |
8630 | if (!bfd_set_section_alignment (dynobj, htab->sgotplt, | |
8631 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
8632 | return FALSE; | |
0a44bf69 | 8633 | |
861fb55a | 8634 | htab->splt->size += htab->plt_header_size; |
0a44bf69 | 8635 | |
861fb55a DJ |
8636 | /* On non-VxWorks targets, the first two entries in .got.plt |
8637 | are reserved. */ | |
8638 | if (!htab->is_vxworks) | |
a44acb1e MR |
8639 | htab->sgotplt->size |
8640 | += get_elf_backend_data (dynobj)->got_header_size; | |
0a44bf69 | 8641 | |
861fb55a DJ |
8642 | /* On VxWorks, also allocate room for the header's |
8643 | .rela.plt.unloaded entries. */ | |
8644 | if (htab->is_vxworks && !info->shared) | |
0a44bf69 RS |
8645 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
8646 | } | |
8647 | ||
8648 | /* Assign the next .plt entry to this symbol. */ | |
8649 | h->plt.offset = htab->splt->size; | |
8650 | htab->splt->size += htab->plt_entry_size; | |
8651 | ||
8652 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 8653 | symbol's value to the address of the stub. */ |
131eb6b7 | 8654 | if (!info->shared && !h->def_regular) |
0a44bf69 RS |
8655 | { |
8656 | h->root.u.def.section = htab->splt; | |
8657 | h->root.u.def.value = h->plt.offset; | |
861fb55a DJ |
8658 | /* For VxWorks, point at the PLT load stub rather than the |
8659 | lazy resolution stub; this stub will become the canonical | |
8660 | function address. */ | |
8661 | if (htab->is_vxworks) | |
8662 | h->root.u.def.value += 8; | |
0a44bf69 RS |
8663 | } |
8664 | ||
861fb55a DJ |
8665 | /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT |
8666 | relocation. */ | |
8667 | htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj); | |
8668 | htab->srelplt->size += (htab->is_vxworks | |
8669 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
8670 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
8671 | |
8672 | /* Make room for the .rela.plt.unloaded relocations. */ | |
861fb55a | 8673 | if (htab->is_vxworks && !info->shared) |
0a44bf69 RS |
8674 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
8675 | ||
861fb55a DJ |
8676 | /* All relocations against this symbol that could have been made |
8677 | dynamic will now refer to the PLT entry instead. */ | |
8678 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 8679 | |
0a44bf69 RS |
8680 | return TRUE; |
8681 | } | |
8682 | ||
8683 | /* If this is a weak symbol, and there is a real definition, the | |
8684 | processor independent code will have arranged for us to see the | |
8685 | real definition first, and we can just use the same value. */ | |
8686 | if (h->u.weakdef != NULL) | |
8687 | { | |
8688 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
8689 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8690 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8691 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
8692 | return TRUE; | |
8693 | } | |
8694 | ||
861fb55a DJ |
8695 | /* Otherwise, there is nothing further to do for symbols defined |
8696 | in regular objects. */ | |
8697 | if (h->def_regular) | |
0a44bf69 RS |
8698 | return TRUE; |
8699 | ||
861fb55a DJ |
8700 | /* There's also nothing more to do if we'll convert all relocations |
8701 | against this symbol into dynamic relocations. */ | |
8702 | if (!hmips->has_static_relocs) | |
8703 | return TRUE; | |
8704 | ||
8705 | /* We're now relying on copy relocations. Complain if we have | |
8706 | some that we can't convert. */ | |
8707 | if (!htab->use_plts_and_copy_relocs || info->shared) | |
8708 | { | |
8709 | (*_bfd_error_handler) (_("non-dynamic relocations refer to " | |
8710 | "dynamic symbol %s"), | |
8711 | h->root.root.string); | |
8712 | bfd_set_error (bfd_error_bad_value); | |
8713 | return FALSE; | |
8714 | } | |
8715 | ||
0a44bf69 RS |
8716 | /* We must allocate the symbol in our .dynbss section, which will |
8717 | become part of the .bss section of the executable. There will be | |
8718 | an entry for this symbol in the .dynsym section. The dynamic | |
8719 | object will contain position independent code, so all references | |
8720 | from the dynamic object to this symbol will go through the global | |
8721 | offset table. The dynamic linker will use the .dynsym entry to | |
8722 | determine the address it must put in the global offset table, so | |
8723 | both the dynamic object and the regular object will refer to the | |
8724 | same memory location for the variable. */ | |
8725 | ||
8726 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
8727 | { | |
861fb55a DJ |
8728 | if (htab->is_vxworks) |
8729 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
8730 | else | |
8731 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
8732 | h->needs_copy = 1; |
8733 | } | |
8734 | ||
861fb55a DJ |
8735 | /* All relocations against this symbol that could have been made |
8736 | dynamic will now refer to the local copy instead. */ | |
8737 | hmips->possibly_dynamic_relocs = 0; | |
8738 | ||
027297b7 | 8739 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 8740 | } |
b49e97c9 TS |
8741 | \f |
8742 | /* This function is called after all the input files have been read, | |
8743 | and the input sections have been assigned to output sections. We | |
8744 | check for any mips16 stub sections that we can discard. */ | |
8745 | ||
b34976b6 | 8746 | bfd_boolean |
9719ad41 RS |
8747 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
8748 | struct bfd_link_info *info) | |
b49e97c9 TS |
8749 | { |
8750 | asection *ri; | |
0a44bf69 | 8751 | struct mips_elf_link_hash_table *htab; |
861fb55a | 8752 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
8753 | |
8754 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 8755 | BFD_ASSERT (htab != NULL); |
f4416af6 | 8756 | |
b49e97c9 TS |
8757 | /* The .reginfo section has a fixed size. */ |
8758 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8759 | if (ri != NULL) | |
9719ad41 | 8760 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 8761 | |
861fb55a DJ |
8762 | hti.info = info; |
8763 | hti.output_bfd = output_bfd; | |
8764 | hti.error = FALSE; | |
8765 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8766 | mips_elf_check_symbols, &hti); | |
8767 | if (hti.error) | |
8768 | return FALSE; | |
f4416af6 | 8769 | |
33bb52fb RS |
8770 | return TRUE; |
8771 | } | |
8772 | ||
8773 | /* If the link uses a GOT, lay it out and work out its size. */ | |
8774 | ||
8775 | static bfd_boolean | |
8776 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
8777 | { | |
8778 | bfd *dynobj; | |
8779 | asection *s; | |
8780 | struct mips_got_info *g; | |
33bb52fb RS |
8781 | bfd_size_type loadable_size = 0; |
8782 | bfd_size_type page_gotno; | |
d7206569 | 8783 | bfd *ibfd; |
ab361d49 | 8784 | struct mips_elf_traverse_got_arg tga; |
33bb52fb RS |
8785 | struct mips_elf_link_hash_table *htab; |
8786 | ||
8787 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8788 | BFD_ASSERT (htab != NULL); |
8789 | ||
a8028dd0 | 8790 | s = htab->sgot; |
f4416af6 | 8791 | if (s == NULL) |
b34976b6 | 8792 | return TRUE; |
b49e97c9 | 8793 | |
33bb52fb | 8794 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
8795 | g = htab->got_info; |
8796 | ||
861fb55a DJ |
8797 | /* Allocate room for the reserved entries. VxWorks always reserves |
8798 | 3 entries; other objects only reserve 2 entries. */ | |
8799 | BFD_ASSERT (g->assigned_gotno == 0); | |
8800 | if (htab->is_vxworks) | |
8801 | htab->reserved_gotno = 3; | |
8802 | else | |
8803 | htab->reserved_gotno = 2; | |
8804 | g->local_gotno += htab->reserved_gotno; | |
8805 | g->assigned_gotno = htab->reserved_gotno; | |
8806 | ||
6c42ddb9 RS |
8807 | /* Decide which symbols need to go in the global part of the GOT and |
8808 | count the number of reloc-only GOT symbols. */ | |
020d7251 | 8809 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 8810 | |
13db6b44 RS |
8811 | if (!mips_elf_resolve_final_got_entries (info, g)) |
8812 | return FALSE; | |
8813 | ||
33bb52fb RS |
8814 | /* Calculate the total loadable size of the output. That |
8815 | will give us the maximum number of GOT_PAGE entries | |
8816 | required. */ | |
d7206569 | 8817 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next) |
33bb52fb RS |
8818 | { |
8819 | asection *subsection; | |
5108fc1b | 8820 | |
d7206569 | 8821 | for (subsection = ibfd->sections; |
33bb52fb RS |
8822 | subsection; |
8823 | subsection = subsection->next) | |
8824 | { | |
8825 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8826 | continue; | |
8827 | loadable_size += ((subsection->size + 0xf) | |
8828 | &~ (bfd_size_type) 0xf); | |
8829 | } | |
8830 | } | |
f4416af6 | 8831 | |
0a44bf69 | 8832 | if (htab->is_vxworks) |
738e5348 | 8833 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
8834 | relocations against local symbols evaluate to "G", and the EABI does |
8835 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 8836 | page_gotno = 0; |
0a44bf69 RS |
8837 | else |
8838 | /* Assume there are two loadable segments consisting of contiguous | |
8839 | sections. Is 5 enough? */ | |
c224138d RS |
8840 | page_gotno = (loadable_size >> 16) + 5; |
8841 | ||
13db6b44 | 8842 | /* Choose the smaller of the two page estimates; both are intended to be |
c224138d RS |
8843 | conservative. */ |
8844 | if (page_gotno > g->page_gotno) | |
8845 | page_gotno = g->page_gotno; | |
f4416af6 | 8846 | |
c224138d | 8847 | g->local_gotno += page_gotno; |
ab361d49 | 8848 | |
ab361d49 RS |
8849 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
8850 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
0f20cc35 DJ |
8851 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
8852 | ||
0a44bf69 RS |
8853 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
8854 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
8855 | dynamic loader. */ | |
57093f5e | 8856 | if (!htab->is_vxworks && s->size > MIPS_ELF_GOT_MAX_SIZE (info)) |
0f20cc35 | 8857 | { |
a8028dd0 | 8858 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
8859 | return FALSE; |
8860 | } | |
8861 | else | |
8862 | { | |
d7206569 RS |
8863 | /* Record that all bfds use G. This also has the effect of freeing |
8864 | the per-bfd GOTs, which we no longer need. */ | |
8865 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
8866 | if (mips_elf_bfd_got (ibfd, FALSE)) | |
8867 | mips_elf_replace_bfd_got (ibfd, g); | |
8868 | mips_elf_replace_bfd_got (output_bfd, g); | |
8869 | ||
33bb52fb | 8870 | /* Set up TLS entries. */ |
0f20cc35 | 8871 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
72e7511a RS |
8872 | tga.info = info; |
8873 | tga.g = g; | |
8874 | tga.value = MIPS_ELF_GOT_SIZE (output_bfd); | |
8875 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
8876 | if (!tga.g) | |
8877 | return FALSE; | |
1fd20d70 RS |
8878 | BFD_ASSERT (g->tls_assigned_gotno |
8879 | == g->global_gotno + g->local_gotno + g->tls_gotno); | |
33bb52fb | 8880 | |
57093f5e RS |
8881 | /* Each VxWorks GOT entry needs an explicit relocation. */ |
8882 | if (htab->is_vxworks && info->shared) | |
8883 | g->relocs += g->global_gotno + g->local_gotno - htab->reserved_gotno; | |
8884 | ||
33bb52fb | 8885 | /* Allocate room for the TLS relocations. */ |
ab361d49 RS |
8886 | if (g->relocs) |
8887 | mips_elf_allocate_dynamic_relocations (dynobj, info, g->relocs); | |
0f20cc35 | 8888 | } |
b49e97c9 | 8889 | |
b34976b6 | 8890 | return TRUE; |
b49e97c9 TS |
8891 | } |
8892 | ||
33bb52fb RS |
8893 | /* Estimate the size of the .MIPS.stubs section. */ |
8894 | ||
8895 | static void | |
8896 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
8897 | { | |
8898 | struct mips_elf_link_hash_table *htab; | |
8899 | bfd_size_type dynsymcount; | |
8900 | ||
8901 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8902 | BFD_ASSERT (htab != NULL); |
8903 | ||
33bb52fb RS |
8904 | if (htab->lazy_stub_count == 0) |
8905 | return; | |
8906 | ||
8907 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
8908 | section, so add a dummy entry to the end. */ | |
8909 | htab->lazy_stub_count++; | |
8910 | ||
8911 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
8912 | At this point, dynsymcount does not account for section symbols | |
8913 | and count_section_dynsyms may overestimate the number that will | |
8914 | be needed. */ | |
8915 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
8916 | + count_section_dynsyms (output_bfd, info)); | |
8917 | ||
8918 | /* Determine the size of one stub entry. */ | |
8919 | htab->function_stub_size = (dynsymcount > 0x10000 | |
8920 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
8921 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
8922 | ||
8923 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
8924 | } | |
8925 | ||
8926 | /* A mips_elf_link_hash_traverse callback for which DATA points to the | |
8927 | MIPS hash table. If H needs a traditional MIPS lazy-binding stub, | |
8928 | allocate an entry in the stubs section. */ | |
8929 | ||
8930 | static bfd_boolean | |
af924177 | 8931 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb RS |
8932 | { |
8933 | struct mips_elf_link_hash_table *htab; | |
8934 | ||
8935 | htab = (struct mips_elf_link_hash_table *) data; | |
8936 | if (h->needs_lazy_stub) | |
8937 | { | |
8938 | h->root.root.u.def.section = htab->sstubs; | |
8939 | h->root.root.u.def.value = htab->sstubs->size; | |
8940 | h->root.plt.offset = htab->sstubs->size; | |
8941 | htab->sstubs->size += htab->function_stub_size; | |
8942 | } | |
8943 | return TRUE; | |
8944 | } | |
8945 | ||
8946 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
8947 | Set the final size of the .MIPS.stub section. */ | |
8948 | ||
8949 | static void | |
8950 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) | |
8951 | { | |
8952 | struct mips_elf_link_hash_table *htab; | |
8953 | ||
8954 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8955 | BFD_ASSERT (htab != NULL); |
8956 | ||
33bb52fb RS |
8957 | if (htab->lazy_stub_count == 0) |
8958 | return; | |
8959 | ||
8960 | htab->sstubs->size = 0; | |
4dfe6ac6 | 8961 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, htab); |
33bb52fb RS |
8962 | htab->sstubs->size += htab->function_stub_size; |
8963 | BFD_ASSERT (htab->sstubs->size | |
8964 | == htab->lazy_stub_count * htab->function_stub_size); | |
8965 | } | |
8966 | ||
b49e97c9 TS |
8967 | /* Set the sizes of the dynamic sections. */ |
8968 | ||
b34976b6 | 8969 | bfd_boolean |
9719ad41 RS |
8970 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
8971 | struct bfd_link_info *info) | |
b49e97c9 TS |
8972 | { |
8973 | bfd *dynobj; | |
861fb55a | 8974 | asection *s, *sreldyn; |
b34976b6 | 8975 | bfd_boolean reltext; |
0a44bf69 | 8976 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8977 | |
0a44bf69 | 8978 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 8979 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
8980 | dynobj = elf_hash_table (info)->dynobj; |
8981 | BFD_ASSERT (dynobj != NULL); | |
8982 | ||
8983 | if (elf_hash_table (info)->dynamic_sections_created) | |
8984 | { | |
8985 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 8986 | if (info->executable) |
b49e97c9 | 8987 | { |
3d4d4302 | 8988 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 8989 | BFD_ASSERT (s != NULL); |
eea6121a | 8990 | s->size |
b49e97c9 TS |
8991 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
8992 | s->contents | |
8993 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
8994 | } | |
861fb55a DJ |
8995 | |
8996 | /* Create a symbol for the PLT, if we know that we are using it. */ | |
8997 | if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL) | |
8998 | { | |
8999 | struct elf_link_hash_entry *h; | |
9000 | ||
9001 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9002 | ||
9003 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt, | |
9004 | "_PROCEDURE_LINKAGE_TABLE_"); | |
9005 | htab->root.hplt = h; | |
9006 | if (h == NULL) | |
9007 | return FALSE; | |
9008 | h->type = STT_FUNC; | |
9009 | } | |
9010 | } | |
4e41d0d7 | 9011 | |
9a59ad6b | 9012 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 9013 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 9014 | |
33bb52fb RS |
9015 | mips_elf_estimate_stub_size (output_bfd, info); |
9016 | ||
9017 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
9018 | return FALSE; | |
9019 | ||
9020 | mips_elf_lay_out_lazy_stubs (info); | |
9021 | ||
b49e97c9 TS |
9022 | /* The check_relocs and adjust_dynamic_symbol entry points have |
9023 | determined the sizes of the various dynamic sections. Allocate | |
9024 | memory for them. */ | |
b34976b6 | 9025 | reltext = FALSE; |
b49e97c9 TS |
9026 | for (s = dynobj->sections; s != NULL; s = s->next) |
9027 | { | |
9028 | const char *name; | |
b49e97c9 TS |
9029 | |
9030 | /* It's OK to base decisions on the section name, because none | |
9031 | of the dynobj section names depend upon the input files. */ | |
9032 | name = bfd_get_section_name (dynobj, s); | |
9033 | ||
9034 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9035 | continue; | |
9036 | ||
0112cd26 | 9037 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 9038 | { |
c456f082 | 9039 | if (s->size != 0) |
b49e97c9 TS |
9040 | { |
9041 | const char *outname; | |
9042 | asection *target; | |
9043 | ||
9044 | /* If this relocation section applies to a read only | |
9045 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 9046 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
9047 | assert a DT_TEXTREL entry rather than testing whether |
9048 | there exists a relocation to a read only section or | |
9049 | not. */ | |
9050 | outname = bfd_get_section_name (output_bfd, | |
9051 | s->output_section); | |
9052 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
9053 | if ((target != NULL | |
9054 | && (target->flags & SEC_READONLY) != 0 | |
9055 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 9056 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 9057 | reltext = TRUE; |
b49e97c9 TS |
9058 | |
9059 | /* We use the reloc_count field as a counter if we need | |
9060 | to copy relocs into the output file. */ | |
0a44bf69 | 9061 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 9062 | s->reloc_count = 0; |
f4416af6 AO |
9063 | |
9064 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
9065 | sort relocations, but in a different way than we do, | |
9066 | and before we're done creating relocations. Also, it | |
9067 | will move them around between input sections' | |
9068 | relocation's contents, so our sorting would be | |
9069 | broken, so don't let it run. */ | |
9070 | info->combreloc = 0; | |
b49e97c9 TS |
9071 | } |
9072 | } | |
b49e97c9 TS |
9073 | else if (! info->shared |
9074 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 9075 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 9076 | { |
5108fc1b | 9077 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 9078 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 9079 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
9080 | } |
9081 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 9082 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 9083 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
861fb55a DJ |
9084 | else if (s == htab->splt) |
9085 | { | |
9086 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
9087 | room for an extra nop to fill the delay slot. This is |
9088 | for CPUs without load interlocking. */ | |
9089 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
9090 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
9091 | s->size += 4; |
9092 | } | |
0112cd26 | 9093 | else if (! CONST_STRNEQ (name, ".init") |
33bb52fb | 9094 | && s != htab->sgot |
0a44bf69 | 9095 | && s != htab->sgotplt |
861fb55a DJ |
9096 | && s != htab->sstubs |
9097 | && s != htab->sdynbss) | |
b49e97c9 TS |
9098 | { |
9099 | /* It's not one of our sections, so don't allocate space. */ | |
9100 | continue; | |
9101 | } | |
9102 | ||
c456f082 | 9103 | if (s->size == 0) |
b49e97c9 | 9104 | { |
8423293d | 9105 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
9106 | continue; |
9107 | } | |
9108 | ||
c456f082 AM |
9109 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
9110 | continue; | |
9111 | ||
b49e97c9 | 9112 | /* Allocate memory for the section contents. */ |
eea6121a | 9113 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 9114 | if (s->contents == NULL) |
b49e97c9 TS |
9115 | { |
9116 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 9117 | return FALSE; |
b49e97c9 TS |
9118 | } |
9119 | } | |
9120 | ||
9121 | if (elf_hash_table (info)->dynamic_sections_created) | |
9122 | { | |
9123 | /* Add some entries to the .dynamic section. We fill in the | |
9124 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
9125 | must add the entries now so that we get the correct size for | |
5750dcec | 9126 | the .dynamic section. */ |
af5978fb RS |
9127 | |
9128 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 9129 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
9130 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
9131 | may only look at the first one they see. */ | |
af5978fb RS |
9132 | if (!info->shared |
9133 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
9134 | return FALSE; | |
b49e97c9 | 9135 | |
5750dcec DJ |
9136 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
9137 | used by the debugger. */ | |
9138 | if (info->executable | |
9139 | && !SGI_COMPAT (output_bfd) | |
9140 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9141 | return FALSE; | |
9142 | ||
0a44bf69 | 9143 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
9144 | info->flags |= DF_TEXTREL; |
9145 | ||
9146 | if ((info->flags & DF_TEXTREL) != 0) | |
9147 | { | |
9148 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 9149 | return FALSE; |
943284cc DJ |
9150 | |
9151 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
9152 | write out an actual text relocation; we may not, because | |
9153 | at this point we do not know whether e.g. any .eh_frame | |
9154 | absolute relocations have been converted to PC-relative. */ | |
9155 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
9156 | } |
9157 | ||
9158 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 9159 | return FALSE; |
b49e97c9 | 9160 | |
861fb55a | 9161 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 9162 | if (htab->is_vxworks) |
b49e97c9 | 9163 | { |
0a44bf69 RS |
9164 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
9165 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 9166 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9167 | { |
9168 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
9169 | return FALSE; | |
b49e97c9 | 9170 | |
0a44bf69 RS |
9171 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
9172 | return FALSE; | |
b49e97c9 | 9173 | |
0a44bf69 RS |
9174 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
9175 | return FALSE; | |
9176 | } | |
b49e97c9 | 9177 | } |
0a44bf69 RS |
9178 | else |
9179 | { | |
861fb55a | 9180 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9181 | { |
9182 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
9183 | return FALSE; | |
b49e97c9 | 9184 | |
0a44bf69 RS |
9185 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
9186 | return FALSE; | |
b49e97c9 | 9187 | |
0a44bf69 RS |
9188 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
9189 | return FALSE; | |
9190 | } | |
b49e97c9 | 9191 | |
0a44bf69 RS |
9192 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
9193 | return FALSE; | |
b49e97c9 | 9194 | |
0a44bf69 RS |
9195 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
9196 | return FALSE; | |
b49e97c9 | 9197 | |
0a44bf69 RS |
9198 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
9199 | return FALSE; | |
b49e97c9 | 9200 | |
0a44bf69 RS |
9201 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
9202 | return FALSE; | |
b49e97c9 | 9203 | |
0a44bf69 RS |
9204 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
9205 | return FALSE; | |
b49e97c9 | 9206 | |
0a44bf69 RS |
9207 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
9208 | return FALSE; | |
b49e97c9 | 9209 | |
0a44bf69 RS |
9210 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
9211 | return FALSE; | |
9212 | ||
9213 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
9214 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
9215 | return FALSE; | |
9216 | ||
9217 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
9218 | && (bfd_get_section_by_name | |
af0edeb8 | 9219 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 RS |
9220 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
9221 | return FALSE; | |
9222 | } | |
861fb55a DJ |
9223 | if (htab->splt->size > 0) |
9224 | { | |
9225 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
9226 | return FALSE; | |
9227 | ||
9228 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
9229 | return FALSE; | |
9230 | ||
9231 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
9232 | return FALSE; | |
9233 | ||
9234 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
9235 | return FALSE; | |
9236 | } | |
7a2b07ff NS |
9237 | if (htab->is_vxworks |
9238 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
9239 | return FALSE; | |
b49e97c9 TS |
9240 | } |
9241 | ||
b34976b6 | 9242 | return TRUE; |
b49e97c9 TS |
9243 | } |
9244 | \f | |
81d43bff RS |
9245 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
9246 | Adjust its R_ADDEND field so that it is correct for the output file. | |
9247 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
9248 | and sections respectively; both use symbol indexes. */ | |
9249 | ||
9250 | static void | |
9251 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
9252 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
9253 | asection **local_sections, Elf_Internal_Rela *rel) | |
9254 | { | |
9255 | unsigned int r_type, r_symndx; | |
9256 | Elf_Internal_Sym *sym; | |
9257 | asection *sec; | |
9258 | ||
020d7251 | 9259 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
9260 | { |
9261 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 9262 | if (gprel16_reloc_p (r_type) |
81d43bff | 9263 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 9264 | || literal_reloc_p (r_type)) |
81d43bff RS |
9265 | { |
9266 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
9267 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
9268 | } | |
9269 | ||
9270 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
9271 | sym = local_syms + r_symndx; | |
9272 | ||
9273 | /* Adjust REL's addend to account for section merging. */ | |
9274 | if (!info->relocatable) | |
9275 | { | |
9276 | sec = local_sections[r_symndx]; | |
9277 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
9278 | } | |
9279 | ||
9280 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
9281 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9282 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
9283 | } | |
9284 | } | |
9285 | ||
545fd46b MR |
9286 | /* Handle relocations against symbols from removed linkonce sections, |
9287 | or sections discarded by a linker script. We use this wrapper around | |
9288 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
9289 | on 64-bit ELF targets. In this case for any relocation handled, which | |
9290 | always be the first in a triplet, the remaining two have to be processed | |
9291 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
9292 | index referred by the first reloc that applies to all the three and the | |
9293 | remaining two never refer to an object symbol. And it is the final | |
9294 | relocation (the last non-null one) that determines the output field of | |
9295 | the whole relocation so retrieve the corresponding howto structure for | |
9296 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
9297 | ||
9298 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
9299 | and therefore requires to be pasted in a loop. It also defines a block | |
9300 | and does not protect any of its arguments, hence the extra brackets. */ | |
9301 | ||
9302 | static void | |
9303 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
9304 | struct bfd_link_info *info, | |
9305 | bfd *input_bfd, asection *input_section, | |
9306 | Elf_Internal_Rela **rel, | |
9307 | const Elf_Internal_Rela **relend, | |
9308 | bfd_boolean rel_reloc, | |
9309 | reloc_howto_type *howto, | |
9310 | bfd_byte *contents) | |
9311 | { | |
9312 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
9313 | int count = bed->s->int_rels_per_ext_rel; | |
9314 | unsigned int r_type; | |
9315 | int i; | |
9316 | ||
9317 | for (i = count - 1; i > 0; i--) | |
9318 | { | |
9319 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
9320 | if (r_type != R_MIPS_NONE) | |
9321 | { | |
9322 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
9323 | break; | |
9324 | } | |
9325 | } | |
9326 | do | |
9327 | { | |
9328 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
9329 | (*rel), count, (*relend), | |
9330 | howto, i, contents); | |
9331 | } | |
9332 | while (0); | |
9333 | } | |
9334 | ||
b49e97c9 TS |
9335 | /* Relocate a MIPS ELF section. */ |
9336 | ||
b34976b6 | 9337 | bfd_boolean |
9719ad41 RS |
9338 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
9339 | bfd *input_bfd, asection *input_section, | |
9340 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
9341 | Elf_Internal_Sym *local_syms, | |
9342 | asection **local_sections) | |
b49e97c9 TS |
9343 | { |
9344 | Elf_Internal_Rela *rel; | |
9345 | const Elf_Internal_Rela *relend; | |
9346 | bfd_vma addend = 0; | |
b34976b6 | 9347 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 9348 | const struct elf_backend_data *bed; |
b49e97c9 TS |
9349 | |
9350 | bed = get_elf_backend_data (output_bfd); | |
9351 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
9352 | for (rel = relocs; rel < relend; ++rel) | |
9353 | { | |
9354 | const char *name; | |
c9adbffe | 9355 | bfd_vma value = 0; |
b49e97c9 | 9356 | reloc_howto_type *howto; |
38a7df63 | 9357 | bfd_boolean cross_mode_jump_p; |
b34976b6 | 9358 | /* TRUE if the relocation is a RELA relocation, rather than a |
b49e97c9 | 9359 | REL relocation. */ |
b34976b6 | 9360 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 9361 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 9362 | const char *msg; |
ab96bf03 AM |
9363 | unsigned long r_symndx; |
9364 | asection *sec; | |
749b8d9d L |
9365 | Elf_Internal_Shdr *symtab_hdr; |
9366 | struct elf_link_hash_entry *h; | |
d4730f92 | 9367 | bfd_boolean rel_reloc; |
b49e97c9 | 9368 | |
d4730f92 BS |
9369 | rel_reloc = (NEWABI_P (input_bfd) |
9370 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
9371 | relocs, rel)); | |
b49e97c9 | 9372 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 9373 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
9374 | |
9375 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 9376 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 9377 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
9378 | { |
9379 | sec = local_sections[r_symndx]; | |
9380 | h = NULL; | |
9381 | } | |
ab96bf03 AM |
9382 | else |
9383 | { | |
ab96bf03 | 9384 | unsigned long extsymoff; |
ab96bf03 | 9385 | |
ab96bf03 AM |
9386 | extsymoff = 0; |
9387 | if (!elf_bad_symtab (input_bfd)) | |
9388 | extsymoff = symtab_hdr->sh_info; | |
9389 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
9390 | while (h->root.type == bfd_link_hash_indirect | |
9391 | || h->root.type == bfd_link_hash_warning) | |
9392 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9393 | ||
9394 | sec = NULL; | |
9395 | if (h->root.type == bfd_link_hash_defined | |
9396 | || h->root.type == bfd_link_hash_defweak) | |
9397 | sec = h->root.u.def.section; | |
9398 | } | |
9399 | ||
dbaa2011 | 9400 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
9401 | { |
9402 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
9403 | input_section, &rel, &relend, | |
9404 | rel_reloc, howto, contents); | |
9405 | continue; | |
9406 | } | |
ab96bf03 | 9407 | |
4a14403c | 9408 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
9409 | { |
9410 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
9411 | 64-bit code, but make sure all their addresses are in the | |
9412 | lowermost or uppermost 32-bit section of the 64-bit address | |
9413 | space. Thus, when they use an R_MIPS_64 they mean what is | |
9414 | usually meant by R_MIPS_32, with the exception that the | |
9415 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 9416 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
9417 | |
9418 | /* On big-endian systems, we need to lie about the position | |
9419 | of the reloc. */ | |
9420 | if (bfd_big_endian (input_bfd)) | |
9421 | rel->r_offset += 4; | |
9422 | } | |
b49e97c9 TS |
9423 | |
9424 | if (!use_saved_addend_p) | |
9425 | { | |
b49e97c9 TS |
9426 | /* If these relocations were originally of the REL variety, |
9427 | we must pull the addend out of the field that will be | |
9428 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
9429 | RELA relocation. */ |
9430 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
9431 | relocs, rel)) | |
b49e97c9 | 9432 | { |
b34976b6 | 9433 | rela_relocation_p = FALSE; |
c224138d RS |
9434 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
9435 | howto, contents); | |
738e5348 RS |
9436 | if (hi16_reloc_p (r_type) |
9437 | || (got16_reloc_p (r_type) | |
b49e97c9 | 9438 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 9439 | local_sections))) |
b49e97c9 | 9440 | { |
c224138d RS |
9441 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
9442 | contents, &addend)) | |
749b8d9d | 9443 | { |
749b8d9d L |
9444 | if (h) |
9445 | name = h->root.root.string; | |
9446 | else | |
9447 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
9448 | local_syms + r_symndx, | |
9449 | sec); | |
9450 | (*_bfd_error_handler) | |
9451 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
9452 | input_bfd, input_section, name, howto->name, | |
9453 | rel->r_offset); | |
749b8d9d | 9454 | } |
b49e97c9 | 9455 | } |
30ac9238 RS |
9456 | else |
9457 | addend <<= howto->rightshift; | |
b49e97c9 TS |
9458 | } |
9459 | else | |
9460 | addend = rel->r_addend; | |
81d43bff RS |
9461 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
9462 | local_syms, local_sections, rel); | |
b49e97c9 TS |
9463 | } |
9464 | ||
1049f94e | 9465 | if (info->relocatable) |
b49e97c9 | 9466 | { |
4a14403c | 9467 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
9468 | && bfd_big_endian (input_bfd)) |
9469 | rel->r_offset -= 4; | |
9470 | ||
81d43bff | 9471 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 9472 | { |
81d43bff | 9473 | addend += rel->r_addend; |
738e5348 | 9474 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
9475 | addend = mips_elf_high (addend); |
9476 | else if (r_type == R_MIPS_HIGHER) | |
9477 | addend = mips_elf_higher (addend); | |
9478 | else if (r_type == R_MIPS_HIGHEST) | |
9479 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
9480 | else |
9481 | addend >>= howto->rightshift; | |
b49e97c9 | 9482 | |
30ac9238 RS |
9483 | /* We use the source mask, rather than the destination |
9484 | mask because the place to which we are writing will be | |
9485 | source of the addend in the final link. */ | |
b49e97c9 TS |
9486 | addend &= howto->src_mask; |
9487 | ||
5a659663 | 9488 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9489 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9490 | ABI. Here, we need to update the addend. It would be | |
9491 | possible to get away with just using the R_MIPS_32 reloc | |
9492 | but for endianness. */ | |
9493 | { | |
9494 | bfd_vma sign_bits; | |
9495 | bfd_vma low_bits; | |
9496 | bfd_vma high_bits; | |
9497 | ||
9498 | if (addend & ((bfd_vma) 1 << 31)) | |
9499 | #ifdef BFD64 | |
9500 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9501 | #else | |
9502 | sign_bits = -1; | |
9503 | #endif | |
9504 | else | |
9505 | sign_bits = 0; | |
9506 | ||
9507 | /* If we don't know that we have a 64-bit type, | |
9508 | do two separate stores. */ | |
9509 | if (bfd_big_endian (input_bfd)) | |
9510 | { | |
9511 | /* Store the sign-bits (which are most significant) | |
9512 | first. */ | |
9513 | low_bits = sign_bits; | |
9514 | high_bits = addend; | |
9515 | } | |
9516 | else | |
9517 | { | |
9518 | low_bits = addend; | |
9519 | high_bits = sign_bits; | |
9520 | } | |
9521 | bfd_put_32 (input_bfd, low_bits, | |
9522 | contents + rel->r_offset); | |
9523 | bfd_put_32 (input_bfd, high_bits, | |
9524 | contents + rel->r_offset + 4); | |
9525 | continue; | |
9526 | } | |
9527 | ||
9528 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
9529 | input_bfd, input_section, | |
b34976b6 AM |
9530 | contents, FALSE)) |
9531 | return FALSE; | |
b49e97c9 TS |
9532 | } |
9533 | ||
9534 | /* Go on to the next relocation. */ | |
9535 | continue; | |
9536 | } | |
9537 | ||
9538 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
9539 | relocations for the same offset. In that case we are | |
9540 | supposed to treat the output of each relocation as the addend | |
9541 | for the next. */ | |
9542 | if (rel + 1 < relend | |
9543 | && rel->r_offset == rel[1].r_offset | |
9544 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 9545 | use_saved_addend_p = TRUE; |
b49e97c9 | 9546 | else |
b34976b6 | 9547 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
9548 | |
9549 | /* Figure out what value we are supposed to relocate. */ | |
9550 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
9551 | input_section, info, rel, | |
9552 | addend, howto, local_syms, | |
9553 | local_sections, &value, | |
38a7df63 | 9554 | &name, &cross_mode_jump_p, |
bce03d3d | 9555 | use_saved_addend_p)) |
b49e97c9 TS |
9556 | { |
9557 | case bfd_reloc_continue: | |
9558 | /* There's nothing to do. */ | |
9559 | continue; | |
9560 | ||
9561 | case bfd_reloc_undefined: | |
9562 | /* mips_elf_calculate_relocation already called the | |
9563 | undefined_symbol callback. There's no real point in | |
9564 | trying to perform the relocation at this point, so we | |
9565 | just skip ahead to the next relocation. */ | |
9566 | continue; | |
9567 | ||
9568 | case bfd_reloc_notsupported: | |
9569 | msg = _("internal error: unsupported relocation error"); | |
9570 | info->callbacks->warning | |
9571 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 9572 | return FALSE; |
b49e97c9 TS |
9573 | |
9574 | case bfd_reloc_overflow: | |
9575 | if (use_saved_addend_p) | |
9576 | /* Ignore overflow until we reach the last relocation for | |
9577 | a given location. */ | |
9578 | ; | |
9579 | else | |
9580 | { | |
0e53d9da AN |
9581 | struct mips_elf_link_hash_table *htab; |
9582 | ||
9583 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9584 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9585 | BFD_ASSERT (name != NULL); |
0e53d9da | 9586 | if (!htab->small_data_overflow_reported |
9684f078 | 9587 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 9588 | || literal_reloc_p (howto->type))) |
0e53d9da | 9589 | { |
91d6fa6a NC |
9590 | msg = _("small-data section exceeds 64KB;" |
9591 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
9592 | |
9593 | htab->small_data_overflow_reported = TRUE; | |
9594 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
9595 | } | |
b49e97c9 | 9596 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 9597 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 9598 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9599 | return FALSE; |
b49e97c9 TS |
9600 | } |
9601 | break; | |
9602 | ||
9603 | case bfd_reloc_ok: | |
9604 | break; | |
9605 | ||
df58fc94 RS |
9606 | case bfd_reloc_outofrange: |
9607 | if (jal_reloc_p (howto->type)) | |
9608 | { | |
9609 | msg = _("JALX to a non-word-aligned address"); | |
9610 | info->callbacks->warning | |
9611 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
9612 | return FALSE; | |
9613 | } | |
9614 | /* Fall through. */ | |
9615 | ||
b49e97c9 TS |
9616 | default: |
9617 | abort (); | |
9618 | break; | |
9619 | } | |
9620 | ||
9621 | /* If we've got another relocation for the address, keep going | |
9622 | until we reach the last one. */ | |
9623 | if (use_saved_addend_p) | |
9624 | { | |
9625 | addend = value; | |
9626 | continue; | |
9627 | } | |
9628 | ||
4a14403c | 9629 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9630 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9631 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
9632 | that calculated the right value. Now, however, we | |
9633 | sign-extend the 32-bit result to 64-bits, and store it as a | |
9634 | 64-bit value. We are especially generous here in that we | |
9635 | go to extreme lengths to support this usage on systems with | |
9636 | only a 32-bit VMA. */ | |
9637 | { | |
9638 | bfd_vma sign_bits; | |
9639 | bfd_vma low_bits; | |
9640 | bfd_vma high_bits; | |
9641 | ||
9642 | if (value & ((bfd_vma) 1 << 31)) | |
9643 | #ifdef BFD64 | |
9644 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9645 | #else | |
9646 | sign_bits = -1; | |
9647 | #endif | |
9648 | else | |
9649 | sign_bits = 0; | |
9650 | ||
9651 | /* If we don't know that we have a 64-bit type, | |
9652 | do two separate stores. */ | |
9653 | if (bfd_big_endian (input_bfd)) | |
9654 | { | |
9655 | /* Undo what we did above. */ | |
9656 | rel->r_offset -= 4; | |
9657 | /* Store the sign-bits (which are most significant) | |
9658 | first. */ | |
9659 | low_bits = sign_bits; | |
9660 | high_bits = value; | |
9661 | } | |
9662 | else | |
9663 | { | |
9664 | low_bits = value; | |
9665 | high_bits = sign_bits; | |
9666 | } | |
9667 | bfd_put_32 (input_bfd, low_bits, | |
9668 | contents + rel->r_offset); | |
9669 | bfd_put_32 (input_bfd, high_bits, | |
9670 | contents + rel->r_offset + 4); | |
9671 | continue; | |
9672 | } | |
9673 | ||
9674 | /* Actually perform the relocation. */ | |
9675 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
9676 | input_bfd, input_section, | |
38a7df63 | 9677 | contents, cross_mode_jump_p)) |
b34976b6 | 9678 | return FALSE; |
b49e97c9 TS |
9679 | } |
9680 | ||
b34976b6 | 9681 | return TRUE; |
b49e97c9 TS |
9682 | } |
9683 | \f | |
861fb55a DJ |
9684 | /* A function that iterates over each entry in la25_stubs and fills |
9685 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
9686 | ||
9687 | static int | |
9688 | mips_elf_create_la25_stub (void **slot, void *data) | |
9689 | { | |
9690 | struct mips_htab_traverse_info *hti; | |
9691 | struct mips_elf_link_hash_table *htab; | |
9692 | struct mips_elf_la25_stub *stub; | |
9693 | asection *s; | |
9694 | bfd_byte *loc; | |
9695 | bfd_vma offset, target, target_high, target_low; | |
9696 | ||
9697 | stub = (struct mips_elf_la25_stub *) *slot; | |
9698 | hti = (struct mips_htab_traverse_info *) data; | |
9699 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 9700 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
9701 | |
9702 | /* Create the section contents, if we haven't already. */ | |
9703 | s = stub->stub_section; | |
9704 | loc = s->contents; | |
9705 | if (loc == NULL) | |
9706 | { | |
9707 | loc = bfd_malloc (s->size); | |
9708 | if (loc == NULL) | |
9709 | { | |
9710 | hti->error = TRUE; | |
9711 | return FALSE; | |
9712 | } | |
9713 | s->contents = loc; | |
9714 | } | |
9715 | ||
9716 | /* Work out where in the section this stub should go. */ | |
9717 | offset = stub->offset; | |
9718 | ||
9719 | /* Work out the target address. */ | |
8f0c309a CLT |
9720 | target = mips_elf_get_la25_target (stub, &s); |
9721 | target += s->output_section->vma + s->output_offset; | |
9722 | ||
861fb55a DJ |
9723 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
9724 | target_low = (target & 0xffff); | |
9725 | ||
9726 | if (stub->stub_section != htab->strampoline) | |
9727 | { | |
df58fc94 | 9728 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
9729 | of the section and write the two instructions at the end. */ |
9730 | memset (loc, 0, offset); | |
9731 | loc += offset; | |
df58fc94 RS |
9732 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9733 | { | |
d21911ea MR |
9734 | bfd_put_micromips_32 (hti->output_bfd, |
9735 | LA25_LUI_MICROMIPS (target_high), | |
9736 | loc); | |
9737 | bfd_put_micromips_32 (hti->output_bfd, | |
9738 | LA25_ADDIU_MICROMIPS (target_low), | |
9739 | loc + 4); | |
df58fc94 RS |
9740 | } |
9741 | else | |
9742 | { | |
9743 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9744 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
9745 | } | |
861fb55a DJ |
9746 | } |
9747 | else | |
9748 | { | |
9749 | /* This is trampoline. */ | |
9750 | loc += offset; | |
df58fc94 RS |
9751 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9752 | { | |
d21911ea MR |
9753 | bfd_put_micromips_32 (hti->output_bfd, |
9754 | LA25_LUI_MICROMIPS (target_high), loc); | |
9755 | bfd_put_micromips_32 (hti->output_bfd, | |
9756 | LA25_J_MICROMIPS (target), loc + 4); | |
9757 | bfd_put_micromips_32 (hti->output_bfd, | |
9758 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
9759 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
9760 | } | |
9761 | else | |
9762 | { | |
9763 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9764 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
9765 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
9766 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
9767 | } | |
861fb55a DJ |
9768 | } |
9769 | return TRUE; | |
9770 | } | |
9771 | ||
b49e97c9 TS |
9772 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9773 | adjust it appropriately now. */ | |
9774 | ||
9775 | static void | |
9719ad41 RS |
9776 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
9777 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9778 | { |
9779 | /* The linker script takes care of providing names and values for | |
9780 | these, but we must place them into the right sections. */ | |
9781 | static const char* const text_section_symbols[] = { | |
9782 | "_ftext", | |
9783 | "_etext", | |
9784 | "__dso_displacement", | |
9785 | "__elf_header", | |
9786 | "__program_header_table", | |
9787 | NULL | |
9788 | }; | |
9789 | ||
9790 | static const char* const data_section_symbols[] = { | |
9791 | "_fdata", | |
9792 | "_edata", | |
9793 | "_end", | |
9794 | "_fbss", | |
9795 | NULL | |
9796 | }; | |
9797 | ||
9798 | const char* const *p; | |
9799 | int i; | |
9800 | ||
9801 | for (i = 0; i < 2; ++i) | |
9802 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
9803 | *p; | |
9804 | ++p) | |
9805 | if (strcmp (*p, name) == 0) | |
9806 | { | |
9807 | /* All of these symbols are given type STT_SECTION by the | |
9808 | IRIX6 linker. */ | |
9809 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 9810 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
9811 | |
9812 | /* The IRIX linker puts these symbols in special sections. */ | |
9813 | if (i == 0) | |
9814 | sym->st_shndx = SHN_MIPS_TEXT; | |
9815 | else | |
9816 | sym->st_shndx = SHN_MIPS_DATA; | |
9817 | ||
9818 | break; | |
9819 | } | |
9820 | } | |
9821 | ||
9822 | /* Finish up dynamic symbol handling. We set the contents of various | |
9823 | dynamic sections here. */ | |
9824 | ||
b34976b6 | 9825 | bfd_boolean |
9719ad41 RS |
9826 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
9827 | struct bfd_link_info *info, | |
9828 | struct elf_link_hash_entry *h, | |
9829 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9830 | { |
9831 | bfd *dynobj; | |
b49e97c9 | 9832 | asection *sgot; |
f4416af6 | 9833 | struct mips_got_info *g, *gg; |
b49e97c9 | 9834 | const char *name; |
3d6746ca | 9835 | int idx; |
5108fc1b | 9836 | struct mips_elf_link_hash_table *htab; |
738e5348 | 9837 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 9838 | |
5108fc1b | 9839 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9840 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9841 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 9842 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9843 | |
861fb55a DJ |
9844 | BFD_ASSERT (!htab->is_vxworks); |
9845 | ||
9846 | if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub) | |
9847 | { | |
9848 | /* We've decided to create a PLT entry for this symbol. */ | |
9849 | bfd_byte *loc; | |
9850 | bfd_vma header_address, plt_index, got_address; | |
9851 | bfd_vma got_address_high, got_address_low, load; | |
9852 | const bfd_vma *plt_entry; | |
9853 | ||
9854 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9855 | BFD_ASSERT (h->dynindx != -1); | |
9856 | BFD_ASSERT (htab->splt != NULL); | |
9857 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9858 | BFD_ASSERT (!h->def_regular); | |
9859 | ||
9860 | /* Calculate the address of the PLT header. */ | |
9861 | header_address = (htab->splt->output_section->vma | |
9862 | + htab->splt->output_offset); | |
9863 | ||
9864 | /* Calculate the index of the entry. */ | |
9865 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9866 | / htab->plt_entry_size); | |
9867 | ||
9868 | /* Calculate the address of the .got.plt entry. */ | |
9869 | got_address = (htab->sgotplt->output_section->vma | |
9870 | + htab->sgotplt->output_offset | |
9871 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9872 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9873 | got_address_low = got_address & 0xffff; | |
9874 | ||
9875 | /* Initially point the .got.plt entry at the PLT header. */ | |
9876 | loc = (htab->sgotplt->contents | |
9877 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9878 | if (ABI_64_P (output_bfd)) | |
9879 | bfd_put_64 (output_bfd, header_address, loc); | |
9880 | else | |
9881 | bfd_put_32 (output_bfd, header_address, loc); | |
9882 | ||
9883 | /* Find out where the .plt entry should go. */ | |
9884 | loc = htab->splt->contents + h->plt.offset; | |
9885 | ||
9886 | /* Pick the load opcode. */ | |
9887 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
9888 | ||
9889 | /* Fill in the PLT entry itself. */ | |
9890 | plt_entry = mips_exec_plt_entry; | |
9891 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); | |
9892 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4); | |
6d30f5b2 NC |
9893 | |
9894 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
9895 | { | |
9896 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
9897 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9898 | } | |
9899 | else | |
9900 | { | |
9901 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
9902 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12); | |
9903 | } | |
861fb55a DJ |
9904 | |
9905 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9906 | mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt, | |
9907 | plt_index, h->dynindx, | |
9908 | R_MIPS_JUMP_SLOT, got_address); | |
9909 | ||
9910 | /* We distinguish between PLT entries and lazy-binding stubs by | |
9911 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
9912 | flag and leave the value if there are any relocations in the | |
9913 | binary where pointer equality matters. */ | |
9914 | sym->st_shndx = SHN_UNDEF; | |
9915 | if (h->pointer_equality_needed) | |
9916 | sym->st_other = STO_MIPS_PLT; | |
9917 | else | |
9918 | sym->st_value = 0; | |
9919 | } | |
9920 | else if (h->plt.offset != MINUS_ONE) | |
b49e97c9 | 9921 | { |
861fb55a | 9922 | /* We've decided to create a lazy-binding stub. */ |
5108fc1b | 9923 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
9924 | |
9925 | /* This symbol has a stub. Set it up. */ | |
9926 | ||
9927 | BFD_ASSERT (h->dynindx != -1); | |
9928 | ||
5108fc1b RS |
9929 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9930 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
9931 | |
9932 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
9933 | sign extension at runtime in the stub, resulting in a negative |
9934 | index value. */ | |
9935 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 9936 | return FALSE; |
b49e97c9 TS |
9937 | |
9938 | /* Fill the stub. */ | |
3d6746ca DD |
9939 | idx = 0; |
9940 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
9941 | idx += 4; | |
9942 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
9943 | idx += 4; | |
5108fc1b | 9944 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 9945 | { |
5108fc1b | 9946 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
9947 | stub + idx); |
9948 | idx += 4; | |
9949 | } | |
9950 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
9951 | idx += 4; | |
b49e97c9 | 9952 | |
3d6746ca DD |
9953 | /* If a large stub is not required and sign extension is not a |
9954 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
9955 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9956 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
9957 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
9958 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
9959 | else | |
5108fc1b RS |
9960 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
9961 | stub + idx); | |
9962 | ||
4e41d0d7 RS |
9963 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
9964 | memcpy (htab->sstubs->contents + h->plt.offset, | |
9965 | stub, htab->function_stub_size); | |
b49e97c9 TS |
9966 | |
9967 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
9968 | only for the referenced symbol. */ | |
9969 | sym->st_shndx = SHN_UNDEF; | |
9970 | ||
9971 | /* The run-time linker uses the st_value field of the symbol | |
9972 | to reset the global offset table entry for this external | |
9973 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
9974 | sym->st_value = (htab->sstubs->output_section->vma |
9975 | + htab->sstubs->output_offset | |
c5ae1840 | 9976 | + h->plt.offset); |
b49e97c9 TS |
9977 | } |
9978 | ||
738e5348 RS |
9979 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
9980 | refer to the stub, since only the stub uses the standard calling | |
9981 | conventions. */ | |
9982 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
9983 | { | |
9984 | BFD_ASSERT (hmips->need_fn_stub); | |
9985 | sym->st_value = (hmips->fn_stub->output_section->vma | |
9986 | + hmips->fn_stub->output_offset); | |
9987 | sym->st_size = hmips->fn_stub->size; | |
9988 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
9989 | } | |
9990 | ||
b49e97c9 | 9991 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 9992 | || h->forced_local); |
b49e97c9 | 9993 | |
23cc69b6 | 9994 | sgot = htab->sgot; |
a8028dd0 | 9995 | g = htab->got_info; |
b49e97c9 TS |
9996 | BFD_ASSERT (g != NULL); |
9997 | ||
9998 | /* Run through the global symbol table, creating GOT entries for all | |
9999 | the symbols that need them. */ | |
020d7251 | 10000 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
10001 | { |
10002 | bfd_vma offset; | |
10003 | bfd_vma value; | |
10004 | ||
6eaa6adc | 10005 | value = sym->st_value; |
13fbec83 | 10006 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
b49e97c9 TS |
10007 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
10008 | } | |
10009 | ||
e641e783 | 10010 | if (hmips->global_got_area != GGA_NONE && g->next) |
f4416af6 AO |
10011 | { |
10012 | struct mips_got_entry e, *p; | |
0626d451 | 10013 | bfd_vma entry; |
f4416af6 | 10014 | bfd_vma offset; |
f4416af6 AO |
10015 | |
10016 | gg = g; | |
10017 | ||
10018 | e.abfd = output_bfd; | |
10019 | e.symndx = -1; | |
738e5348 | 10020 | e.d.h = hmips; |
9ab066b4 | 10021 | e.tls_type = GOT_TLS_NONE; |
143d77c5 | 10022 | |
f4416af6 AO |
10023 | for (g = g->next; g->next != gg; g = g->next) |
10024 | { | |
10025 | if (g->got_entries | |
10026 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
10027 | &e))) | |
10028 | { | |
10029 | offset = p->gotidx; | |
6c42ddb9 | 10030 | BFD_ASSERT (offset > 0 && offset < htab->sgot->size); |
0626d451 RS |
10031 | if (info->shared |
10032 | || (elf_hash_table (info)->dynamic_sections_created | |
10033 | && p->d.h != NULL | |
f5385ebf AM |
10034 | && p->d.h->root.def_dynamic |
10035 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
10036 | { |
10037 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
10038 | the various compatibility problems, it's easier to mock | |
10039 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
10040 | mips_elf_create_dynamic_relocation to calculate the | |
10041 | appropriate addend. */ | |
10042 | Elf_Internal_Rela rel[3]; | |
10043 | ||
10044 | memset (rel, 0, sizeof (rel)); | |
10045 | if (ABI_64_P (output_bfd)) | |
10046 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
10047 | else | |
10048 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
10049 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
10050 | ||
10051 | entry = 0; | |
10052 | if (! (mips_elf_create_dynamic_relocation | |
10053 | (output_bfd, info, rel, | |
10054 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
10055 | return FALSE; | |
10056 | } | |
10057 | else | |
10058 | entry = sym->st_value; | |
10059 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
10060 | } |
10061 | } | |
10062 | } | |
10063 | ||
b49e97c9 TS |
10064 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
10065 | name = h->root.root.string; | |
9637f6ef | 10066 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 10067 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
10068 | sym->st_shndx = SHN_ABS; |
10069 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
10070 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
10071 | { | |
10072 | sym->st_shndx = SHN_ABS; | |
10073 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10074 | sym->st_value = 1; | |
10075 | } | |
4a14403c | 10076 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10077 | { |
10078 | sym->st_shndx = SHN_ABS; | |
10079 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10080 | sym->st_value = elf_gp (output_bfd); | |
10081 | } | |
10082 | else if (SGI_COMPAT (output_bfd)) | |
10083 | { | |
10084 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
10085 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
10086 | { | |
10087 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10088 | sym->st_other = STO_PROTECTED; | |
10089 | sym->st_value = 0; | |
10090 | sym->st_shndx = SHN_MIPS_DATA; | |
10091 | } | |
10092 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
10093 | { | |
10094 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10095 | sym->st_other = STO_PROTECTED; | |
10096 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
10097 | sym->st_shndx = SHN_ABS; | |
10098 | } | |
10099 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
10100 | { | |
10101 | if (h->type == STT_FUNC) | |
10102 | sym->st_shndx = SHN_MIPS_TEXT; | |
10103 | else if (h->type == STT_OBJECT) | |
10104 | sym->st_shndx = SHN_MIPS_DATA; | |
10105 | } | |
10106 | } | |
10107 | ||
861fb55a DJ |
10108 | /* Emit a copy reloc, if needed. */ |
10109 | if (h->needs_copy) | |
10110 | { | |
10111 | asection *s; | |
10112 | bfd_vma symval; | |
10113 | ||
10114 | BFD_ASSERT (h->dynindx != -1); | |
10115 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10116 | ||
10117 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10118 | symval = (h->root.u.def.section->output_section->vma | |
10119 | + h->root.u.def.section->output_offset | |
10120 | + h->root.u.def.value); | |
10121 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
10122 | h->dynindx, R_MIPS_COPY, symval); | |
10123 | } | |
10124 | ||
b49e97c9 TS |
10125 | /* Handle the IRIX6-specific symbols. */ |
10126 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
10127 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
10128 | ||
cbf8d970 MR |
10129 | /* Keep dynamic compressed symbols odd. This allows the dynamic linker |
10130 | to treat compressed symbols like any other. */ | |
30c09090 | 10131 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
10132 | { |
10133 | BFD_ASSERT (sym->st_value & 1); | |
10134 | sym->st_other -= STO_MIPS16; | |
10135 | } | |
cbf8d970 MR |
10136 | else if (ELF_ST_IS_MICROMIPS (sym->st_other)) |
10137 | { | |
10138 | BFD_ASSERT (sym->st_value & 1); | |
10139 | sym->st_other -= STO_MICROMIPS; | |
10140 | } | |
b49e97c9 | 10141 | |
b34976b6 | 10142 | return TRUE; |
b49e97c9 TS |
10143 | } |
10144 | ||
0a44bf69 RS |
10145 | /* Likewise, for VxWorks. */ |
10146 | ||
10147 | bfd_boolean | |
10148 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
10149 | struct bfd_link_info *info, | |
10150 | struct elf_link_hash_entry *h, | |
10151 | Elf_Internal_Sym *sym) | |
10152 | { | |
10153 | bfd *dynobj; | |
10154 | asection *sgot; | |
10155 | struct mips_got_info *g; | |
10156 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 10157 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
10158 | |
10159 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10160 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 10161 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 10162 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 RS |
10163 | |
10164 | if (h->plt.offset != (bfd_vma) -1) | |
10165 | { | |
6d79d2ed | 10166 | bfd_byte *loc; |
0a44bf69 RS |
10167 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
10168 | Elf_Internal_Rela rel; | |
10169 | static const bfd_vma *plt_entry; | |
10170 | ||
10171 | BFD_ASSERT (h->dynindx != -1); | |
10172 | BFD_ASSERT (htab->splt != NULL); | |
10173 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
10174 | ||
10175 | /* Calculate the address of the .plt entry. */ | |
10176 | plt_address = (htab->splt->output_section->vma | |
10177 | + htab->splt->output_offset | |
10178 | + h->plt.offset); | |
10179 | ||
10180 | /* Calculate the index of the entry. */ | |
10181 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
10182 | / htab->plt_entry_size); | |
10183 | ||
10184 | /* Calculate the address of the .got.plt entry. */ | |
10185 | got_address = (htab->sgotplt->output_section->vma | |
10186 | + htab->sgotplt->output_offset | |
10187 | + plt_index * 4); | |
10188 | ||
10189 | /* Calculate the offset of the .got.plt entry from | |
10190 | _GLOBAL_OFFSET_TABLE_. */ | |
10191 | got_offset = mips_elf_gotplt_index (info, h); | |
10192 | ||
10193 | /* Calculate the offset for the branch at the start of the PLT | |
10194 | entry. The branch jumps to the beginning of .plt. */ | |
10195 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
10196 | ||
10197 | /* Fill in the initial value of the .got.plt entry. */ | |
10198 | bfd_put_32 (output_bfd, plt_address, | |
10199 | htab->sgotplt->contents + plt_index * 4); | |
10200 | ||
10201 | /* Find out where the .plt entry should go. */ | |
10202 | loc = htab->splt->contents + h->plt.offset; | |
10203 | ||
10204 | if (info->shared) | |
10205 | { | |
10206 | plt_entry = mips_vxworks_shared_plt_entry; | |
10207 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10208 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10209 | } | |
10210 | else | |
10211 | { | |
10212 | bfd_vma got_address_high, got_address_low; | |
10213 | ||
10214 | plt_entry = mips_vxworks_exec_plt_entry; | |
10215 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
10216 | got_address_low = got_address & 0xffff; | |
10217 | ||
10218 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10219 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10220 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
10221 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
10222 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10223 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10224 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10225 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10226 | ||
10227 | loc = (htab->srelplt2->contents | |
10228 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
10229 | ||
10230 | /* Emit a relocation for the .got.plt entry. */ | |
10231 | rel.r_offset = got_address; | |
10232 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10233 | rel.r_addend = h->plt.offset; | |
10234 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10235 | ||
10236 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
10237 | loc += sizeof (Elf32_External_Rela); | |
10238 | rel.r_offset = plt_address + 8; | |
10239 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10240 | rel.r_addend = got_offset; | |
10241 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10242 | ||
10243 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
10244 | loc += sizeof (Elf32_External_Rela); | |
10245 | rel.r_offset += 4; | |
10246 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10247 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10248 | } | |
10249 | ||
10250 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
10251 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
10252 | rel.r_offset = got_address; | |
10253 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
10254 | rel.r_addend = 0; | |
10255 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10256 | ||
10257 | if (!h->def_regular) | |
10258 | sym->st_shndx = SHN_UNDEF; | |
10259 | } | |
10260 | ||
10261 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
10262 | ||
23cc69b6 | 10263 | sgot = htab->sgot; |
a8028dd0 | 10264 | g = htab->got_info; |
0a44bf69 RS |
10265 | BFD_ASSERT (g != NULL); |
10266 | ||
10267 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 10268 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
10269 | { |
10270 | bfd_vma offset; | |
10271 | Elf_Internal_Rela outrel; | |
10272 | bfd_byte *loc; | |
10273 | asection *s; | |
10274 | ||
10275 | /* Install the symbol value in the GOT. */ | |
13fbec83 | 10276 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
0a44bf69 RS |
10277 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); |
10278 | ||
10279 | /* Add a dynamic relocation for it. */ | |
10280 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10281 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
10282 | outrel.r_offset = (sgot->output_section->vma | |
10283 | + sgot->output_offset | |
10284 | + offset); | |
10285 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
10286 | outrel.r_addend = 0; | |
10287 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
10288 | } | |
10289 | ||
10290 | /* Emit a copy reloc, if needed. */ | |
10291 | if (h->needs_copy) | |
10292 | { | |
10293 | Elf_Internal_Rela rel; | |
10294 | ||
10295 | BFD_ASSERT (h->dynindx != -1); | |
10296 | ||
10297 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
10298 | + h->root.u.def.section->output_offset | |
10299 | + h->root.u.def.value); | |
10300 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
10301 | rel.r_addend = 0; | |
10302 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
10303 | htab->srelbss->contents | |
10304 | + (htab->srelbss->reloc_count | |
10305 | * sizeof (Elf32_External_Rela))); | |
10306 | ++htab->srelbss->reloc_count; | |
10307 | } | |
10308 | ||
df58fc94 RS |
10309 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
10310 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
10311 | sym->st_value &= ~1; |
10312 | ||
10313 | return TRUE; | |
10314 | } | |
10315 | ||
861fb55a DJ |
10316 | /* Write out a plt0 entry to the beginning of .plt. */ |
10317 | ||
10318 | static void | |
10319 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10320 | { | |
10321 | bfd_byte *loc; | |
10322 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
10323 | static const bfd_vma *plt_entry; | |
10324 | struct mips_elf_link_hash_table *htab; | |
10325 | ||
10326 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10327 | BFD_ASSERT (htab != NULL); |
10328 | ||
861fb55a DJ |
10329 | if (ABI_64_P (output_bfd)) |
10330 | plt_entry = mips_n64_exec_plt0_entry; | |
10331 | else if (ABI_N32_P (output_bfd)) | |
10332 | plt_entry = mips_n32_exec_plt0_entry; | |
10333 | else | |
10334 | plt_entry = mips_o32_exec_plt0_entry; | |
10335 | ||
10336 | /* Calculate the value of .got.plt. */ | |
10337 | gotplt_value = (htab->sgotplt->output_section->vma | |
10338 | + htab->sgotplt->output_offset); | |
10339 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; | |
10340 | gotplt_value_low = gotplt_value & 0xffff; | |
10341 | ||
10342 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
10343 | not be loaded in two instructions. */ | |
10344 | BFD_ASSERT ((gotplt_value & ~(bfd_vma) 0x7fffffff) == 0 | |
10345 | || ~(gotplt_value | 0x7fffffff) == 0); | |
10346 | ||
10347 | /* Install the PLT header. */ | |
10348 | loc = htab->splt->contents; | |
10349 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
10350 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
10351 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
10352 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10353 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10354 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10355 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10356 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10357 | } | |
10358 | ||
0a44bf69 RS |
10359 | /* Install the PLT header for a VxWorks executable and finalize the |
10360 | contents of .rela.plt.unloaded. */ | |
10361 | ||
10362 | static void | |
10363 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10364 | { | |
10365 | Elf_Internal_Rela rela; | |
10366 | bfd_byte *loc; | |
10367 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
10368 | static const bfd_vma *plt_entry; | |
10369 | struct mips_elf_link_hash_table *htab; | |
10370 | ||
10371 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10372 | BFD_ASSERT (htab != NULL); |
10373 | ||
0a44bf69 RS |
10374 | plt_entry = mips_vxworks_exec_plt0_entry; |
10375 | ||
10376 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
10377 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
10378 | + htab->root.hgot->root.u.def.section->output_offset | |
10379 | + htab->root.hgot->root.u.def.value); | |
10380 | ||
10381 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
10382 | got_value_low = got_value & 0xffff; | |
10383 | ||
10384 | /* Calculate the address of the PLT header. */ | |
10385 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
10386 | ||
10387 | /* Install the PLT header. */ | |
10388 | loc = htab->splt->contents; | |
10389 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
10390 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
10391 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
10392 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10393 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10394 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10395 | ||
10396 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
10397 | loc = htab->srelplt2->contents; | |
10398 | rela.r_offset = plt_address; | |
10399 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10400 | rela.r_addend = 0; | |
10401 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10402 | loc += sizeof (Elf32_External_Rela); | |
10403 | ||
10404 | /* Output the relocation for the following addiu of | |
10405 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
10406 | rela.r_offset += 4; | |
10407 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10408 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10409 | loc += sizeof (Elf32_External_Rela); | |
10410 | ||
10411 | /* Fix up the remaining relocations. They may have the wrong | |
10412 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10413 | in which symbols were output. */ | |
10414 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10415 | { | |
10416 | Elf_Internal_Rela rel; | |
10417 | ||
10418 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10419 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10420 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10421 | loc += sizeof (Elf32_External_Rela); | |
10422 | ||
10423 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10424 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10425 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10426 | loc += sizeof (Elf32_External_Rela); | |
10427 | ||
10428 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10429 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10430 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10431 | loc += sizeof (Elf32_External_Rela); | |
10432 | } | |
10433 | } | |
10434 | ||
10435 | /* Install the PLT header for a VxWorks shared library. */ | |
10436 | ||
10437 | static void | |
10438 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10439 | { | |
10440 | unsigned int i; | |
10441 | struct mips_elf_link_hash_table *htab; | |
10442 | ||
10443 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10444 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
10445 | |
10446 | /* We just need to copy the entry byte-by-byte. */ | |
10447 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
10448 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
10449 | htab->splt->contents + i * 4); | |
10450 | } | |
10451 | ||
b49e97c9 TS |
10452 | /* Finish up the dynamic sections. */ |
10453 | ||
b34976b6 | 10454 | bfd_boolean |
9719ad41 RS |
10455 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
10456 | struct bfd_link_info *info) | |
b49e97c9 TS |
10457 | { |
10458 | bfd *dynobj; | |
10459 | asection *sdyn; | |
10460 | asection *sgot; | |
f4416af6 | 10461 | struct mips_got_info *gg, *g; |
0a44bf69 | 10462 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 10463 | |
0a44bf69 | 10464 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
10465 | BFD_ASSERT (htab != NULL); |
10466 | ||
b49e97c9 TS |
10467 | dynobj = elf_hash_table (info)->dynobj; |
10468 | ||
3d4d4302 | 10469 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 10470 | |
23cc69b6 RS |
10471 | sgot = htab->sgot; |
10472 | gg = htab->got_info; | |
b49e97c9 TS |
10473 | |
10474 | if (elf_hash_table (info)->dynamic_sections_created) | |
10475 | { | |
10476 | bfd_byte *b; | |
943284cc | 10477 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
10478 | |
10479 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
10480 | BFD_ASSERT (gg != NULL); |
10481 | ||
d7206569 | 10482 | g = mips_elf_bfd_got (output_bfd, FALSE); |
b49e97c9 TS |
10483 | BFD_ASSERT (g != NULL); |
10484 | ||
10485 | for (b = sdyn->contents; | |
eea6121a | 10486 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
10487 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
10488 | { | |
10489 | Elf_Internal_Dyn dyn; | |
10490 | const char *name; | |
10491 | size_t elemsize; | |
10492 | asection *s; | |
b34976b6 | 10493 | bfd_boolean swap_out_p; |
b49e97c9 TS |
10494 | |
10495 | /* Read in the current dynamic entry. */ | |
10496 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10497 | ||
10498 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 10499 | swap_out_p = TRUE; |
b49e97c9 TS |
10500 | |
10501 | switch (dyn.d_tag) | |
10502 | { | |
10503 | case DT_RELENT: | |
b49e97c9 TS |
10504 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
10505 | break; | |
10506 | ||
0a44bf69 RS |
10507 | case DT_RELAENT: |
10508 | BFD_ASSERT (htab->is_vxworks); | |
10509 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
10510 | break; | |
10511 | ||
b49e97c9 TS |
10512 | case DT_STRSZ: |
10513 | /* Rewrite DT_STRSZ. */ | |
10514 | dyn.d_un.d_val = | |
10515 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
10516 | break; | |
10517 | ||
10518 | case DT_PLTGOT: | |
861fb55a DJ |
10519 | s = htab->sgot; |
10520 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10521 | break; | |
10522 | ||
10523 | case DT_MIPS_PLTGOT: | |
10524 | s = htab->sgotplt; | |
10525 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
b49e97c9 TS |
10526 | break; |
10527 | ||
10528 | case DT_MIPS_RLD_VERSION: | |
10529 | dyn.d_un.d_val = 1; /* XXX */ | |
10530 | break; | |
10531 | ||
10532 | case DT_MIPS_FLAGS: | |
10533 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
10534 | break; | |
10535 | ||
b49e97c9 | 10536 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
10537 | { |
10538 | time_t t; | |
10539 | time (&t); | |
10540 | dyn.d_un.d_val = t; | |
10541 | } | |
b49e97c9 TS |
10542 | break; |
10543 | ||
10544 | case DT_MIPS_ICHECKSUM: | |
10545 | /* XXX FIXME: */ | |
b34976b6 | 10546 | swap_out_p = FALSE; |
b49e97c9 TS |
10547 | break; |
10548 | ||
10549 | case DT_MIPS_IVERSION: | |
10550 | /* XXX FIXME: */ | |
b34976b6 | 10551 | swap_out_p = FALSE; |
b49e97c9 TS |
10552 | break; |
10553 | ||
10554 | case DT_MIPS_BASE_ADDRESS: | |
10555 | s = output_bfd->sections; | |
10556 | BFD_ASSERT (s != NULL); | |
10557 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
10558 | break; | |
10559 | ||
10560 | case DT_MIPS_LOCAL_GOTNO: | |
10561 | dyn.d_un.d_val = g->local_gotno; | |
10562 | break; | |
10563 | ||
10564 | case DT_MIPS_UNREFEXTNO: | |
10565 | /* The index into the dynamic symbol table which is the | |
10566 | entry of the first external symbol that is not | |
10567 | referenced within the same object. */ | |
10568 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
10569 | break; | |
10570 | ||
10571 | case DT_MIPS_GOTSYM: | |
d222d210 | 10572 | if (htab->global_gotsym) |
b49e97c9 | 10573 | { |
d222d210 | 10574 | dyn.d_un.d_val = htab->global_gotsym->dynindx; |
b49e97c9 TS |
10575 | break; |
10576 | } | |
10577 | /* In case if we don't have global got symbols we default | |
10578 | to setting DT_MIPS_GOTSYM to the same value as | |
10579 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
10580 | ||
10581 | case DT_MIPS_SYMTABNO: | |
10582 | name = ".dynsym"; | |
10583 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
10584 | s = bfd_get_section_by_name (output_bfd, name); | |
10585 | BFD_ASSERT (s != NULL); | |
10586 | ||
eea6121a | 10587 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
10588 | break; |
10589 | ||
10590 | case DT_MIPS_HIPAGENO: | |
861fb55a | 10591 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
10592 | break; |
10593 | ||
10594 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
10595 | { |
10596 | struct elf_link_hash_entry *h; | |
10597 | h = mips_elf_hash_table (info)->rld_symbol; | |
10598 | if (!h) | |
10599 | { | |
10600 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10601 | swap_out_p = FALSE; | |
10602 | break; | |
10603 | } | |
10604 | s = h->root.u.def.section; | |
10605 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset | |
10606 | + h->root.u.def.value); | |
10607 | } | |
b49e97c9 TS |
10608 | break; |
10609 | ||
10610 | case DT_MIPS_OPTIONS: | |
10611 | s = (bfd_get_section_by_name | |
10612 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
10613 | dyn.d_un.d_ptr = s->vma; | |
10614 | break; | |
10615 | ||
0a44bf69 RS |
10616 | case DT_RELASZ: |
10617 | BFD_ASSERT (htab->is_vxworks); | |
10618 | /* The count does not include the JUMP_SLOT relocations. */ | |
10619 | if (htab->srelplt) | |
10620 | dyn.d_un.d_val -= htab->srelplt->size; | |
10621 | break; | |
10622 | ||
10623 | case DT_PLTREL: | |
861fb55a DJ |
10624 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10625 | if (htab->is_vxworks) | |
10626 | dyn.d_un.d_val = DT_RELA; | |
10627 | else | |
10628 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
10629 | break; |
10630 | ||
10631 | case DT_PLTRELSZ: | |
861fb55a | 10632 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
0a44bf69 RS |
10633 | dyn.d_un.d_val = htab->srelplt->size; |
10634 | break; | |
10635 | ||
10636 | case DT_JMPREL: | |
861fb55a DJ |
10637 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10638 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma | |
0a44bf69 RS |
10639 | + htab->srelplt->output_offset); |
10640 | break; | |
10641 | ||
943284cc DJ |
10642 | case DT_TEXTREL: |
10643 | /* If we didn't need any text relocations after all, delete | |
10644 | the dynamic tag. */ | |
10645 | if (!(info->flags & DF_TEXTREL)) | |
10646 | { | |
10647 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10648 | swap_out_p = FALSE; | |
10649 | } | |
10650 | break; | |
10651 | ||
10652 | case DT_FLAGS: | |
10653 | /* If we didn't need any text relocations after all, clear | |
10654 | DF_TEXTREL from DT_FLAGS. */ | |
10655 | if (!(info->flags & DF_TEXTREL)) | |
10656 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
10657 | else | |
10658 | swap_out_p = FALSE; | |
10659 | break; | |
10660 | ||
b49e97c9 | 10661 | default: |
b34976b6 | 10662 | swap_out_p = FALSE; |
7a2b07ff NS |
10663 | if (htab->is_vxworks |
10664 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10665 | swap_out_p = TRUE; | |
b49e97c9 TS |
10666 | break; |
10667 | } | |
10668 | ||
943284cc | 10669 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 10670 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
10671 | (dynobj, &dyn, b - dyn_skipped); |
10672 | ||
10673 | if (dyn_to_skip) | |
10674 | { | |
10675 | dyn_skipped += dyn_to_skip; | |
10676 | dyn_to_skip = 0; | |
10677 | } | |
b49e97c9 | 10678 | } |
943284cc DJ |
10679 | |
10680 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
10681 | if (dyn_skipped > 0) | |
10682 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
10683 | } |
10684 | ||
b55fd4d4 DJ |
10685 | if (sgot != NULL && sgot->size > 0 |
10686 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 10687 | { |
0a44bf69 RS |
10688 | if (htab->is_vxworks) |
10689 | { | |
10690 | /* The first entry of the global offset table points to the | |
10691 | ".dynamic" section. The second is initialized by the | |
10692 | loader and contains the shared library identifier. | |
10693 | The third is also initialized by the loader and points | |
10694 | to the lazy resolution stub. */ | |
10695 | MIPS_ELF_PUT_WORD (output_bfd, | |
10696 | sdyn->output_offset + sdyn->output_section->vma, | |
10697 | sgot->contents); | |
10698 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10699 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
10700 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10701 | sgot->contents | |
10702 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
10703 | } | |
10704 | else | |
10705 | { | |
10706 | /* The first entry of the global offset table will be filled at | |
10707 | runtime. The second entry will be used by some runtime loaders. | |
10708 | This isn't the case of IRIX rld. */ | |
10709 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 10710 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
10711 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
10712 | } | |
b49e97c9 | 10713 | |
54938e2a TS |
10714 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
10715 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
10716 | } | |
b49e97c9 | 10717 | |
f4416af6 AO |
10718 | /* Generate dynamic relocations for the non-primary gots. */ |
10719 | if (gg != NULL && gg->next) | |
10720 | { | |
10721 | Elf_Internal_Rela rel[3]; | |
10722 | bfd_vma addend = 0; | |
10723 | ||
10724 | memset (rel, 0, sizeof (rel)); | |
10725 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
10726 | ||
10727 | for (g = gg->next; g->next != gg; g = g->next) | |
10728 | { | |
91d6fa6a | 10729 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 10730 | + g->next->tls_gotno; |
f4416af6 | 10731 | |
9719ad41 | 10732 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 10733 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
10734 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
10735 | sgot->contents | |
91d6fa6a | 10736 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 AO |
10737 | |
10738 | if (! info->shared) | |
10739 | continue; | |
10740 | ||
91d6fa6a | 10741 | while (got_index < g->assigned_gotno) |
f4416af6 AO |
10742 | { |
10743 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
91d6fa6a | 10744 | = got_index++ * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
10745 | if (!(mips_elf_create_dynamic_relocation |
10746 | (output_bfd, info, rel, NULL, | |
10747 | bfd_abs_section_ptr, | |
10748 | 0, &addend, sgot))) | |
10749 | return FALSE; | |
10750 | BFD_ASSERT (addend == 0); | |
10751 | } | |
10752 | } | |
10753 | } | |
10754 | ||
3133ddbf DJ |
10755 | /* The generation of dynamic relocations for the non-primary gots |
10756 | adds more dynamic relocations. We cannot count them until | |
10757 | here. */ | |
10758 | ||
10759 | if (elf_hash_table (info)->dynamic_sections_created) | |
10760 | { | |
10761 | bfd_byte *b; | |
10762 | bfd_boolean swap_out_p; | |
10763 | ||
10764 | BFD_ASSERT (sdyn != NULL); | |
10765 | ||
10766 | for (b = sdyn->contents; | |
10767 | b < sdyn->contents + sdyn->size; | |
10768 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
10769 | { | |
10770 | Elf_Internal_Dyn dyn; | |
10771 | asection *s; | |
10772 | ||
10773 | /* Read in the current dynamic entry. */ | |
10774 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10775 | ||
10776 | /* Assume that we're going to modify it and write it out. */ | |
10777 | swap_out_p = TRUE; | |
10778 | ||
10779 | switch (dyn.d_tag) | |
10780 | { | |
10781 | case DT_RELSZ: | |
10782 | /* Reduce DT_RELSZ to account for any relocations we | |
10783 | decided not to make. This is for the n64 irix rld, | |
10784 | which doesn't seem to apply any relocations if there | |
10785 | are trailing null entries. */ | |
0a44bf69 | 10786 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
10787 | dyn.d_un.d_val = (s->reloc_count |
10788 | * (ABI_64_P (output_bfd) | |
10789 | ? sizeof (Elf64_Mips_External_Rel) | |
10790 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
10791 | /* Adjust the section size too. Tools like the prelinker |
10792 | can reasonably expect the values to the same. */ | |
10793 | elf_section_data (s->output_section)->this_hdr.sh_size | |
10794 | = dyn.d_un.d_val; | |
3133ddbf DJ |
10795 | break; |
10796 | ||
10797 | default: | |
10798 | swap_out_p = FALSE; | |
10799 | break; | |
10800 | } | |
10801 | ||
10802 | if (swap_out_p) | |
10803 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
10804 | (dynobj, &dyn, b); | |
10805 | } | |
10806 | } | |
10807 | ||
b49e97c9 | 10808 | { |
b49e97c9 TS |
10809 | asection *s; |
10810 | Elf32_compact_rel cpt; | |
10811 | ||
b49e97c9 TS |
10812 | if (SGI_COMPAT (output_bfd)) |
10813 | { | |
10814 | /* Write .compact_rel section out. */ | |
3d4d4302 | 10815 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
10816 | if (s != NULL) |
10817 | { | |
10818 | cpt.id1 = 1; | |
10819 | cpt.num = s->reloc_count; | |
10820 | cpt.id2 = 2; | |
10821 | cpt.offset = (s->output_section->filepos | |
10822 | + sizeof (Elf32_External_compact_rel)); | |
10823 | cpt.reserved0 = 0; | |
10824 | cpt.reserved1 = 0; | |
10825 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
10826 | ((Elf32_External_compact_rel *) | |
10827 | s->contents)); | |
10828 | ||
10829 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 10830 | if (htab->sstubs != NULL) |
b49e97c9 TS |
10831 | { |
10832 | file_ptr dummy_offset; | |
10833 | ||
4e41d0d7 RS |
10834 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
10835 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
10836 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 10837 | htab->function_stub_size); |
b49e97c9 TS |
10838 | } |
10839 | } | |
10840 | } | |
10841 | ||
0a44bf69 RS |
10842 | /* The psABI says that the dynamic relocations must be sorted in |
10843 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
10844 | this, and because the code below handles REL rather than RELA | |
10845 | relocations, using it for VxWorks would be outright harmful. */ | |
10846 | if (!htab->is_vxworks) | |
b49e97c9 | 10847 | { |
0a44bf69 RS |
10848 | s = mips_elf_rel_dyn_section (info, FALSE); |
10849 | if (s != NULL | |
10850 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
10851 | { | |
10852 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 10853 | |
0a44bf69 RS |
10854 | if (ABI_64_P (output_bfd)) |
10855 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
10856 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
10857 | sort_dynamic_relocs_64); | |
10858 | else | |
10859 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
10860 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
10861 | sort_dynamic_relocs); | |
10862 | } | |
b49e97c9 | 10863 | } |
b49e97c9 TS |
10864 | } |
10865 | ||
861fb55a | 10866 | if (htab->splt && htab->splt->size > 0) |
0a44bf69 | 10867 | { |
861fb55a DJ |
10868 | if (htab->is_vxworks) |
10869 | { | |
10870 | if (info->shared) | |
10871 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
10872 | else | |
10873 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
10874 | } | |
0a44bf69 | 10875 | else |
861fb55a DJ |
10876 | { |
10877 | BFD_ASSERT (!info->shared); | |
10878 | mips_finish_exec_plt (output_bfd, info); | |
10879 | } | |
0a44bf69 | 10880 | } |
b34976b6 | 10881 | return TRUE; |
b49e97c9 TS |
10882 | } |
10883 | ||
b49e97c9 | 10884 | |
64543e1a RS |
10885 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
10886 | ||
10887 | static void | |
9719ad41 | 10888 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 10889 | { |
64543e1a | 10890 | flagword val; |
b49e97c9 TS |
10891 | |
10892 | switch (bfd_get_mach (abfd)) | |
10893 | { | |
10894 | default: | |
10895 | case bfd_mach_mips3000: | |
10896 | val = E_MIPS_ARCH_1; | |
10897 | break; | |
10898 | ||
10899 | case bfd_mach_mips3900: | |
10900 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
10901 | break; | |
10902 | ||
10903 | case bfd_mach_mips6000: | |
10904 | val = E_MIPS_ARCH_2; | |
10905 | break; | |
10906 | ||
10907 | case bfd_mach_mips4000: | |
10908 | case bfd_mach_mips4300: | |
10909 | case bfd_mach_mips4400: | |
10910 | case bfd_mach_mips4600: | |
10911 | val = E_MIPS_ARCH_3; | |
10912 | break; | |
10913 | ||
10914 | case bfd_mach_mips4010: | |
10915 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
10916 | break; | |
10917 | ||
10918 | case bfd_mach_mips4100: | |
10919 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
10920 | break; | |
10921 | ||
10922 | case bfd_mach_mips4111: | |
10923 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
10924 | break; | |
10925 | ||
00707a0e RS |
10926 | case bfd_mach_mips4120: |
10927 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
10928 | break; | |
10929 | ||
b49e97c9 TS |
10930 | case bfd_mach_mips4650: |
10931 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
10932 | break; | |
10933 | ||
00707a0e RS |
10934 | case bfd_mach_mips5400: |
10935 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
10936 | break; | |
10937 | ||
10938 | case bfd_mach_mips5500: | |
10939 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
10940 | break; | |
10941 | ||
e407c74b NC |
10942 | case bfd_mach_mips5900: |
10943 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
10944 | break; | |
10945 | ||
0d2e43ed ILT |
10946 | case bfd_mach_mips9000: |
10947 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
10948 | break; | |
10949 | ||
b49e97c9 | 10950 | case bfd_mach_mips5000: |
5a7ea749 | 10951 | case bfd_mach_mips7000: |
b49e97c9 TS |
10952 | case bfd_mach_mips8000: |
10953 | case bfd_mach_mips10000: | |
10954 | case bfd_mach_mips12000: | |
3aa3176b TS |
10955 | case bfd_mach_mips14000: |
10956 | case bfd_mach_mips16000: | |
b49e97c9 TS |
10957 | val = E_MIPS_ARCH_4; |
10958 | break; | |
10959 | ||
10960 | case bfd_mach_mips5: | |
10961 | val = E_MIPS_ARCH_5; | |
10962 | break; | |
10963 | ||
350cc38d MS |
10964 | case bfd_mach_mips_loongson_2e: |
10965 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
10966 | break; | |
10967 | ||
10968 | case bfd_mach_mips_loongson_2f: | |
10969 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
10970 | break; | |
10971 | ||
b49e97c9 TS |
10972 | case bfd_mach_mips_sb1: |
10973 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
10974 | break; | |
10975 | ||
d051516a NC |
10976 | case bfd_mach_mips_loongson_3a: |
10977 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_LS3A; | |
10978 | break; | |
10979 | ||
6f179bd0 | 10980 | case bfd_mach_mips_octeon: |
dd6a37e7 | 10981 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
10982 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
10983 | break; | |
10984 | ||
52b6b6b9 JM |
10985 | case bfd_mach_mips_xlr: |
10986 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
10987 | break; | |
10988 | ||
432233b3 AP |
10989 | case bfd_mach_mips_octeon2: |
10990 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
10991 | break; | |
10992 | ||
b49e97c9 TS |
10993 | case bfd_mach_mipsisa32: |
10994 | val = E_MIPS_ARCH_32; | |
10995 | break; | |
10996 | ||
10997 | case bfd_mach_mipsisa64: | |
10998 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
10999 | break; |
11000 | ||
11001 | case bfd_mach_mipsisa32r2: | |
11002 | val = E_MIPS_ARCH_32R2; | |
11003 | break; | |
5f74bc13 CD |
11004 | |
11005 | case bfd_mach_mipsisa64r2: | |
11006 | val = E_MIPS_ARCH_64R2; | |
11007 | break; | |
b49e97c9 | 11008 | } |
b49e97c9 TS |
11009 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
11010 | elf_elfheader (abfd)->e_flags |= val; | |
11011 | ||
64543e1a RS |
11012 | } |
11013 | ||
11014 | ||
11015 | /* The final processing done just before writing out a MIPS ELF object | |
11016 | file. This gets the MIPS architecture right based on the machine | |
11017 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
11018 | ||
11019 | void | |
9719ad41 RS |
11020 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
11021 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
11022 | { |
11023 | unsigned int i; | |
11024 | Elf_Internal_Shdr **hdrpp; | |
11025 | const char *name; | |
11026 | asection *sec; | |
11027 | ||
11028 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
11029 | is nonzero. This is for compatibility with old objects, which used | |
11030 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
11031 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
11032 | mips_set_isa_flags (abfd); | |
11033 | ||
b49e97c9 TS |
11034 | /* Set the sh_info field for .gptab sections and other appropriate |
11035 | info for each special section. */ | |
11036 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
11037 | i < elf_numsections (abfd); | |
11038 | i++, hdrpp++) | |
11039 | { | |
11040 | switch ((*hdrpp)->sh_type) | |
11041 | { | |
11042 | case SHT_MIPS_MSYM: | |
11043 | case SHT_MIPS_LIBLIST: | |
11044 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
11045 | if (sec != NULL) | |
11046 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11047 | break; | |
11048 | ||
11049 | case SHT_MIPS_GPTAB: | |
11050 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11051 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11052 | BFD_ASSERT (name != NULL | |
0112cd26 | 11053 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
11054 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
11055 | BFD_ASSERT (sec != NULL); | |
11056 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11057 | break; | |
11058 | ||
11059 | case SHT_MIPS_CONTENT: | |
11060 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11061 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11062 | BFD_ASSERT (name != NULL | |
0112cd26 | 11063 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
11064 | sec = bfd_get_section_by_name (abfd, |
11065 | name + sizeof ".MIPS.content" - 1); | |
11066 | BFD_ASSERT (sec != NULL); | |
11067 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11068 | break; | |
11069 | ||
11070 | case SHT_MIPS_SYMBOL_LIB: | |
11071 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
11072 | if (sec != NULL) | |
11073 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11074 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
11075 | if (sec != NULL) | |
11076 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11077 | break; | |
11078 | ||
11079 | case SHT_MIPS_EVENTS: | |
11080 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11081 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11082 | BFD_ASSERT (name != NULL); | |
0112cd26 | 11083 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
11084 | sec = bfd_get_section_by_name (abfd, |
11085 | name + sizeof ".MIPS.events" - 1); | |
11086 | else | |
11087 | { | |
0112cd26 | 11088 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
11089 | sec = bfd_get_section_by_name (abfd, |
11090 | (name | |
11091 | + sizeof ".MIPS.post_rel" - 1)); | |
11092 | } | |
11093 | BFD_ASSERT (sec != NULL); | |
11094 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11095 | break; | |
11096 | ||
11097 | } | |
11098 | } | |
11099 | } | |
11100 | \f | |
8dc1a139 | 11101 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
11102 | segments. */ |
11103 | ||
11104 | int | |
a6b96beb AM |
11105 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
11106 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11107 | { |
11108 | asection *s; | |
11109 | int ret = 0; | |
11110 | ||
11111 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
11112 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11113 | if (s && (s->flags & SEC_LOAD)) | |
11114 | ++ret; | |
11115 | ||
11116 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
11117 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
11118 | && bfd_get_section_by_name (abfd, | |
11119 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
11120 | ++ret; | |
11121 | ||
11122 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
11123 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
11124 | && bfd_get_section_by_name (abfd, ".dynamic") | |
11125 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
11126 | ++ret; | |
11127 | ||
98c904a8 RS |
11128 | /* Allocate a PT_NULL header in dynamic objects. See |
11129 | _bfd_mips_elf_modify_segment_map for details. */ | |
11130 | if (!SGI_COMPAT (abfd) | |
11131 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
11132 | ++ret; | |
11133 | ||
b49e97c9 TS |
11134 | return ret; |
11135 | } | |
11136 | ||
8dc1a139 | 11137 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 11138 | |
b34976b6 | 11139 | bfd_boolean |
9719ad41 | 11140 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 11141 | struct bfd_link_info *info) |
b49e97c9 TS |
11142 | { |
11143 | asection *s; | |
11144 | struct elf_segment_map *m, **pm; | |
11145 | bfd_size_type amt; | |
11146 | ||
11147 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
11148 | segment. */ | |
11149 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11150 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11151 | { | |
12bd6957 | 11152 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
11153 | if (m->p_type == PT_MIPS_REGINFO) |
11154 | break; | |
11155 | if (m == NULL) | |
11156 | { | |
11157 | amt = sizeof *m; | |
9719ad41 | 11158 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11159 | if (m == NULL) |
b34976b6 | 11160 | return FALSE; |
b49e97c9 TS |
11161 | |
11162 | m->p_type = PT_MIPS_REGINFO; | |
11163 | m->count = 1; | |
11164 | m->sections[0] = s; | |
11165 | ||
11166 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 11167 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
11168 | while (*pm != NULL |
11169 | && ((*pm)->p_type == PT_PHDR | |
11170 | || (*pm)->p_type == PT_INTERP)) | |
11171 | pm = &(*pm)->next; | |
11172 | ||
11173 | m->next = *pm; | |
11174 | *pm = m; | |
11175 | } | |
11176 | } | |
11177 | ||
11178 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
11179 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 11180 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 11181 | table. */ |
c1fd6598 AO |
11182 | if (NEWABI_P (abfd) |
11183 | /* On non-IRIX6 new abi, we'll have already created a segment | |
11184 | for this section, so don't create another. I'm not sure this | |
11185 | is not also the case for IRIX 6, but I can't test it right | |
11186 | now. */ | |
11187 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
11188 | { |
11189 | for (s = abfd->sections; s; s = s->next) | |
11190 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
11191 | break; | |
11192 | ||
11193 | if (s) | |
11194 | { | |
11195 | struct elf_segment_map *options_segment; | |
11196 | ||
12bd6957 | 11197 | pm = &elf_seg_map (abfd); |
98a8deaf RS |
11198 | while (*pm != NULL |
11199 | && ((*pm)->p_type == PT_PHDR | |
11200 | || (*pm)->p_type == PT_INTERP)) | |
11201 | pm = &(*pm)->next; | |
b49e97c9 | 11202 | |
8ded5a0f AM |
11203 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
11204 | { | |
11205 | amt = sizeof (struct elf_segment_map); | |
11206 | options_segment = bfd_zalloc (abfd, amt); | |
11207 | options_segment->next = *pm; | |
11208 | options_segment->p_type = PT_MIPS_OPTIONS; | |
11209 | options_segment->p_flags = PF_R; | |
11210 | options_segment->p_flags_valid = TRUE; | |
11211 | options_segment->count = 1; | |
11212 | options_segment->sections[0] = s; | |
11213 | *pm = options_segment; | |
11214 | } | |
b49e97c9 TS |
11215 | } |
11216 | } | |
11217 | else | |
11218 | { | |
11219 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
11220 | { | |
11221 | /* If there are .dynamic and .mdebug sections, we make a room | |
11222 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
11223 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
11224 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
11225 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
11226 | { | |
12bd6957 | 11227 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
11228 | if (m->p_type == PT_MIPS_RTPROC) |
11229 | break; | |
11230 | if (m == NULL) | |
11231 | { | |
11232 | amt = sizeof *m; | |
9719ad41 | 11233 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11234 | if (m == NULL) |
b34976b6 | 11235 | return FALSE; |
b49e97c9 TS |
11236 | |
11237 | m->p_type = PT_MIPS_RTPROC; | |
11238 | ||
11239 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
11240 | if (s == NULL) | |
11241 | { | |
11242 | m->count = 0; | |
11243 | m->p_flags = 0; | |
11244 | m->p_flags_valid = 1; | |
11245 | } | |
11246 | else | |
11247 | { | |
11248 | m->count = 1; | |
11249 | m->sections[0] = s; | |
11250 | } | |
11251 | ||
11252 | /* We want to put it after the DYNAMIC segment. */ | |
12bd6957 | 11253 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
11254 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) |
11255 | pm = &(*pm)->next; | |
11256 | if (*pm != NULL) | |
11257 | pm = &(*pm)->next; | |
11258 | ||
11259 | m->next = *pm; | |
11260 | *pm = m; | |
11261 | } | |
11262 | } | |
11263 | } | |
8dc1a139 | 11264 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
11265 | .dynstr, .dynsym, and .hash sections, and everything in |
11266 | between. */ | |
12bd6957 | 11267 | for (pm = &elf_seg_map (abfd); *pm != NULL; |
b49e97c9 TS |
11268 | pm = &(*pm)->next) |
11269 | if ((*pm)->p_type == PT_DYNAMIC) | |
11270 | break; | |
11271 | m = *pm; | |
11272 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
11273 | { | |
11274 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
11275 | segment are read, write and execute. We do that here since | |
11276 | the code in elf.c sets only the read permission. This matters | |
11277 | sometimes for the dynamic linker. */ | |
11278 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
11279 | { | |
11280 | m->p_flags = PF_R | PF_W | PF_X; | |
11281 | m->p_flags_valid = 1; | |
11282 | } | |
11283 | } | |
f6f62d6f RS |
11284 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
11285 | glibc's dynamic linker has traditionally derived the number of | |
11286 | tags from the p_filesz field, and sometimes allocates stack | |
11287 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
11288 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
11289 | other sections can also make life hard for the prelinker, | |
11290 | which might move one of the other sections to a different | |
11291 | PT_LOAD segment. */ | |
11292 | if (SGI_COMPAT (abfd) | |
11293 | && m != NULL | |
11294 | && m->count == 1 | |
11295 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
11296 | { |
11297 | static const char *sec_names[] = | |
11298 | { | |
11299 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
11300 | }; | |
11301 | bfd_vma low, high; | |
11302 | unsigned int i, c; | |
11303 | struct elf_segment_map *n; | |
11304 | ||
792b4a53 | 11305 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
11306 | high = 0; |
11307 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
11308 | { | |
11309 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
11310 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11311 | { | |
11312 | bfd_size_type sz; | |
11313 | ||
11314 | if (low > s->vma) | |
11315 | low = s->vma; | |
eea6121a | 11316 | sz = s->size; |
b49e97c9 TS |
11317 | if (high < s->vma + sz) |
11318 | high = s->vma + sz; | |
11319 | } | |
11320 | } | |
11321 | ||
11322 | c = 0; | |
11323 | for (s = abfd->sections; s != NULL; s = s->next) | |
11324 | if ((s->flags & SEC_LOAD) != 0 | |
11325 | && s->vma >= low | |
eea6121a | 11326 | && s->vma + s->size <= high) |
b49e97c9 TS |
11327 | ++c; |
11328 | ||
11329 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 11330 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 11331 | if (n == NULL) |
b34976b6 | 11332 | return FALSE; |
b49e97c9 TS |
11333 | *n = *m; |
11334 | n->count = c; | |
11335 | ||
11336 | i = 0; | |
11337 | for (s = abfd->sections; s != NULL; s = s->next) | |
11338 | { | |
11339 | if ((s->flags & SEC_LOAD) != 0 | |
11340 | && s->vma >= low | |
eea6121a | 11341 | && s->vma + s->size <= high) |
b49e97c9 TS |
11342 | { |
11343 | n->sections[i] = s; | |
11344 | ++i; | |
11345 | } | |
11346 | } | |
11347 | ||
11348 | *pm = n; | |
11349 | } | |
11350 | } | |
11351 | ||
98c904a8 RS |
11352 | /* Allocate a spare program header in dynamic objects so that tools |
11353 | like the prelinker can add an extra PT_LOAD entry. | |
11354 | ||
11355 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
11356 | standard procedure is to move the first (read-only) sections into | |
11357 | the new (writable) segment. However, the MIPS ABI requires | |
11358 | .dynamic to be in a read-only segment, and the section will often | |
11359 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
11360 | ||
11361 | Although the prelinker could in principle move .dynamic to a | |
11362 | writable segment, it seems better to allocate a spare program | |
11363 | header instead, and avoid the need to move any sections. | |
11364 | There is a long tradition of allocating spare dynamic tags, | |
11365 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
11366 | extension. |
11367 | ||
11368 | If INFO is NULL, we may be copying an already prelinked binary | |
11369 | with objcopy or strip, so do not add this header. */ | |
11370 | if (info != NULL | |
11371 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
11372 | && bfd_get_section_by_name (abfd, ".dynamic")) |
11373 | { | |
12bd6957 | 11374 | for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) |
98c904a8 RS |
11375 | if ((*pm)->p_type == PT_NULL) |
11376 | break; | |
11377 | if (*pm == NULL) | |
11378 | { | |
11379 | m = bfd_zalloc (abfd, sizeof (*m)); | |
11380 | if (m == NULL) | |
11381 | return FALSE; | |
11382 | ||
11383 | m->p_type = PT_NULL; | |
11384 | *pm = m; | |
11385 | } | |
11386 | } | |
11387 | ||
b34976b6 | 11388 | return TRUE; |
b49e97c9 TS |
11389 | } |
11390 | \f | |
11391 | /* Return the section that should be marked against GC for a given | |
11392 | relocation. */ | |
11393 | ||
11394 | asection * | |
9719ad41 | 11395 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 11396 | struct bfd_link_info *info, |
9719ad41 RS |
11397 | Elf_Internal_Rela *rel, |
11398 | struct elf_link_hash_entry *h, | |
11399 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
11400 | { |
11401 | /* ??? Do mips16 stub sections need to be handled special? */ | |
11402 | ||
11403 | if (h != NULL) | |
07adf181 AM |
11404 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
11405 | { | |
11406 | case R_MIPS_GNU_VTINHERIT: | |
11407 | case R_MIPS_GNU_VTENTRY: | |
11408 | return NULL; | |
11409 | } | |
b49e97c9 | 11410 | |
07adf181 | 11411 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
11412 | } |
11413 | ||
11414 | /* Update the got entry reference counts for the section being removed. */ | |
11415 | ||
b34976b6 | 11416 | bfd_boolean |
9719ad41 RS |
11417 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
11418 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
11419 | asection *sec ATTRIBUTE_UNUSED, | |
11420 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11421 | { |
11422 | #if 0 | |
11423 | Elf_Internal_Shdr *symtab_hdr; | |
11424 | struct elf_link_hash_entry **sym_hashes; | |
11425 | bfd_signed_vma *local_got_refcounts; | |
11426 | const Elf_Internal_Rela *rel, *relend; | |
11427 | unsigned long r_symndx; | |
11428 | struct elf_link_hash_entry *h; | |
11429 | ||
7dda2462 TG |
11430 | if (info->relocatable) |
11431 | return TRUE; | |
11432 | ||
b49e97c9 TS |
11433 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
11434 | sym_hashes = elf_sym_hashes (abfd); | |
11435 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
11436 | ||
11437 | relend = relocs + sec->reloc_count; | |
11438 | for (rel = relocs; rel < relend; rel++) | |
11439 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
11440 | { | |
738e5348 RS |
11441 | case R_MIPS16_GOT16: |
11442 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
11443 | case R_MIPS_GOT16: |
11444 | case R_MIPS_CALL16: | |
11445 | case R_MIPS_CALL_HI16: | |
11446 | case R_MIPS_CALL_LO16: | |
11447 | case R_MIPS_GOT_HI16: | |
11448 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
11449 | case R_MIPS_GOT_DISP: |
11450 | case R_MIPS_GOT_PAGE: | |
11451 | case R_MIPS_GOT_OFST: | |
df58fc94 RS |
11452 | case R_MICROMIPS_GOT16: |
11453 | case R_MICROMIPS_CALL16: | |
11454 | case R_MICROMIPS_CALL_HI16: | |
11455 | case R_MICROMIPS_CALL_LO16: | |
11456 | case R_MICROMIPS_GOT_HI16: | |
11457 | case R_MICROMIPS_GOT_LO16: | |
11458 | case R_MICROMIPS_GOT_DISP: | |
11459 | case R_MICROMIPS_GOT_PAGE: | |
11460 | case R_MICROMIPS_GOT_OFST: | |
b49e97c9 TS |
11461 | /* ??? It would seem that the existing MIPS code does no sort |
11462 | of reference counting or whatnot on its GOT and PLT entries, | |
11463 | so it is not possible to garbage collect them at this time. */ | |
11464 | break; | |
11465 | ||
11466 | default: | |
11467 | break; | |
11468 | } | |
11469 | #endif | |
11470 | ||
b34976b6 | 11471 | return TRUE; |
b49e97c9 TS |
11472 | } |
11473 | \f | |
11474 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
11475 | hiding the old indirect symbol. Process additional relocation | |
11476 | information. Also called for weakdefs, in which case we just let | |
11477 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
11478 | ||
11479 | void | |
fcfa13d2 | 11480 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
11481 | struct elf_link_hash_entry *dir, |
11482 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
11483 | { |
11484 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
11485 | ||
fcfa13d2 | 11486 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 11487 | |
861fb55a DJ |
11488 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
11489 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
11490 | /* Any absolute non-dynamic relocations against an indirect or weak | |
11491 | definition will be against the target symbol. */ | |
11492 | if (indmips->has_static_relocs) | |
11493 | dirmips->has_static_relocs = TRUE; | |
11494 | ||
b49e97c9 TS |
11495 | if (ind->root.type != bfd_link_hash_indirect) |
11496 | return; | |
11497 | ||
b49e97c9 TS |
11498 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
11499 | if (indmips->readonly_reloc) | |
b34976b6 | 11500 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 11501 | if (indmips->no_fn_stub) |
b34976b6 | 11502 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
11503 | if (indmips->fn_stub) |
11504 | { | |
11505 | dirmips->fn_stub = indmips->fn_stub; | |
11506 | indmips->fn_stub = NULL; | |
11507 | } | |
11508 | if (indmips->need_fn_stub) | |
11509 | { | |
11510 | dirmips->need_fn_stub = TRUE; | |
11511 | indmips->need_fn_stub = FALSE; | |
11512 | } | |
11513 | if (indmips->call_stub) | |
11514 | { | |
11515 | dirmips->call_stub = indmips->call_stub; | |
11516 | indmips->call_stub = NULL; | |
11517 | } | |
11518 | if (indmips->call_fp_stub) | |
11519 | { | |
11520 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
11521 | indmips->call_fp_stub = NULL; | |
11522 | } | |
634835ae RS |
11523 | if (indmips->global_got_area < dirmips->global_got_area) |
11524 | dirmips->global_got_area = indmips->global_got_area; | |
11525 | if (indmips->global_got_area < GGA_NONE) | |
11526 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
11527 | if (indmips->has_nonpic_branches) |
11528 | dirmips->has_nonpic_branches = TRUE; | |
b49e97c9 | 11529 | } |
b49e97c9 | 11530 | \f |
d01414a5 TS |
11531 | #define PDR_SIZE 32 |
11532 | ||
b34976b6 | 11533 | bfd_boolean |
9719ad41 RS |
11534 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
11535 | struct bfd_link_info *info) | |
d01414a5 TS |
11536 | { |
11537 | asection *o; | |
b34976b6 | 11538 | bfd_boolean ret = FALSE; |
d01414a5 TS |
11539 | unsigned char *tdata; |
11540 | size_t i, skip; | |
11541 | ||
11542 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
11543 | if (! o) | |
b34976b6 | 11544 | return FALSE; |
eea6121a | 11545 | if (o->size == 0) |
b34976b6 | 11546 | return FALSE; |
eea6121a | 11547 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 11548 | return FALSE; |
d01414a5 TS |
11549 | if (o->output_section != NULL |
11550 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 11551 | return FALSE; |
d01414a5 | 11552 | |
eea6121a | 11553 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 11554 | if (! tdata) |
b34976b6 | 11555 | return FALSE; |
d01414a5 | 11556 | |
9719ad41 | 11557 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 11558 | info->keep_memory); |
d01414a5 TS |
11559 | if (!cookie->rels) |
11560 | { | |
11561 | free (tdata); | |
b34976b6 | 11562 | return FALSE; |
d01414a5 TS |
11563 | } |
11564 | ||
11565 | cookie->rel = cookie->rels; | |
11566 | cookie->relend = cookie->rels + o->reloc_count; | |
11567 | ||
eea6121a | 11568 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 11569 | { |
c152c796 | 11570 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
11571 | { |
11572 | tdata[i] = 1; | |
11573 | skip ++; | |
11574 | } | |
11575 | } | |
11576 | ||
11577 | if (skip != 0) | |
11578 | { | |
f0abc2a1 | 11579 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 11580 | o->size -= skip * PDR_SIZE; |
b34976b6 | 11581 | ret = TRUE; |
d01414a5 TS |
11582 | } |
11583 | else | |
11584 | free (tdata); | |
11585 | ||
11586 | if (! info->keep_memory) | |
11587 | free (cookie->rels); | |
11588 | ||
11589 | return ret; | |
11590 | } | |
11591 | ||
b34976b6 | 11592 | bfd_boolean |
9719ad41 | 11593 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
11594 | { |
11595 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
11596 | return TRUE; |
11597 | return FALSE; | |
53bfd6b4 | 11598 | } |
d01414a5 | 11599 | |
b34976b6 | 11600 | bfd_boolean |
c7b8f16e JB |
11601 | _bfd_mips_elf_write_section (bfd *output_bfd, |
11602 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
11603 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
11604 | { |
11605 | bfd_byte *to, *from, *end; | |
11606 | int i; | |
11607 | ||
11608 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 11609 | return FALSE; |
d01414a5 | 11610 | |
f0abc2a1 | 11611 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 11612 | return FALSE; |
d01414a5 TS |
11613 | |
11614 | to = contents; | |
eea6121a | 11615 | end = contents + sec->size; |
d01414a5 TS |
11616 | for (from = contents, i = 0; |
11617 | from < end; | |
11618 | from += PDR_SIZE, i++) | |
11619 | { | |
f0abc2a1 | 11620 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
11621 | continue; |
11622 | if (to != from) | |
11623 | memcpy (to, from, PDR_SIZE); | |
11624 | to += PDR_SIZE; | |
11625 | } | |
11626 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 11627 | sec->output_offset, sec->size); |
b34976b6 | 11628 | return TRUE; |
d01414a5 | 11629 | } |
53bfd6b4 | 11630 | \f |
df58fc94 RS |
11631 | /* microMIPS code retains local labels for linker relaxation. Omit them |
11632 | from output by default for clarity. */ | |
11633 | ||
11634 | bfd_boolean | |
11635 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) | |
11636 | { | |
11637 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
11638 | } | |
11639 | ||
b49e97c9 TS |
11640 | /* MIPS ELF uses a special find_nearest_line routine in order the |
11641 | handle the ECOFF debugging information. */ | |
11642 | ||
11643 | struct mips_elf_find_line | |
11644 | { | |
11645 | struct ecoff_debug_info d; | |
11646 | struct ecoff_find_line i; | |
11647 | }; | |
11648 | ||
b34976b6 | 11649 | bfd_boolean |
9719ad41 RS |
11650 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
11651 | asymbol **symbols, bfd_vma offset, | |
11652 | const char **filename_ptr, | |
11653 | const char **functionname_ptr, | |
11654 | unsigned int *line_ptr) | |
b49e97c9 TS |
11655 | { |
11656 | asection *msec; | |
11657 | ||
11658 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
11659 | filename_ptr, functionname_ptr, | |
11660 | line_ptr)) | |
b34976b6 | 11661 | return TRUE; |
b49e97c9 | 11662 | |
fc28f9aa TG |
11663 | if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, |
11664 | section, symbols, offset, | |
b49e97c9 | 11665 | filename_ptr, functionname_ptr, |
9b8d1a36 | 11666 | line_ptr, NULL, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 11667 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 11668 | return TRUE; |
b49e97c9 TS |
11669 | |
11670 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
11671 | if (msec != NULL) | |
11672 | { | |
11673 | flagword origflags; | |
11674 | struct mips_elf_find_line *fi; | |
11675 | const struct ecoff_debug_swap * const swap = | |
11676 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
11677 | ||
11678 | /* If we are called during a link, mips_elf_final_link may have | |
11679 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
11680 | if appropriate (which it normally will be). */ | |
11681 | origflags = msec->flags; | |
11682 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
11683 | msec->flags |= SEC_HAS_CONTENTS; | |
11684 | ||
698600e4 | 11685 | fi = mips_elf_tdata (abfd)->find_line_info; |
b49e97c9 TS |
11686 | if (fi == NULL) |
11687 | { | |
11688 | bfd_size_type external_fdr_size; | |
11689 | char *fraw_src; | |
11690 | char *fraw_end; | |
11691 | struct fdr *fdr_ptr; | |
11692 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
11693 | ||
9719ad41 | 11694 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
11695 | if (fi == NULL) |
11696 | { | |
11697 | msec->flags = origflags; | |
b34976b6 | 11698 | return FALSE; |
b49e97c9 TS |
11699 | } |
11700 | ||
11701 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
11702 | { | |
11703 | msec->flags = origflags; | |
b34976b6 | 11704 | return FALSE; |
b49e97c9 TS |
11705 | } |
11706 | ||
11707 | /* Swap in the FDR information. */ | |
11708 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 11709 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11710 | if (fi->d.fdr == NULL) |
11711 | { | |
11712 | msec->flags = origflags; | |
b34976b6 | 11713 | return FALSE; |
b49e97c9 TS |
11714 | } |
11715 | external_fdr_size = swap->external_fdr_size; | |
11716 | fdr_ptr = fi->d.fdr; | |
11717 | fraw_src = (char *) fi->d.external_fdr; | |
11718 | fraw_end = (fraw_src | |
11719 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
11720 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 11721 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 | 11722 | |
698600e4 | 11723 | mips_elf_tdata (abfd)->find_line_info = fi; |
b49e97c9 TS |
11724 | |
11725 | /* Note that we don't bother to ever free this information. | |
11726 | find_nearest_line is either called all the time, as in | |
11727 | objdump -l, so the information should be saved, or it is | |
11728 | rarely called, as in ld error messages, so the memory | |
11729 | wasted is unimportant. Still, it would probably be a | |
11730 | good idea for free_cached_info to throw it away. */ | |
11731 | } | |
11732 | ||
11733 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
11734 | &fi->i, filename_ptr, functionname_ptr, | |
11735 | line_ptr)) | |
11736 | { | |
11737 | msec->flags = origflags; | |
b34976b6 | 11738 | return TRUE; |
b49e97c9 TS |
11739 | } |
11740 | ||
11741 | msec->flags = origflags; | |
11742 | } | |
11743 | ||
11744 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
11745 | ||
11746 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
11747 | filename_ptr, functionname_ptr, | |
11748 | line_ptr); | |
11749 | } | |
4ab527b0 FF |
11750 | |
11751 | bfd_boolean | |
11752 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
11753 | const char **filename_ptr, | |
11754 | const char **functionname_ptr, | |
11755 | unsigned int *line_ptr) | |
11756 | { | |
11757 | bfd_boolean found; | |
11758 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11759 | functionname_ptr, line_ptr, | |
11760 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11761 | return found; | |
11762 | } | |
11763 | ||
b49e97c9 TS |
11764 | \f |
11765 | /* When are writing out the .options or .MIPS.options section, | |
11766 | remember the bytes we are writing out, so that we can install the | |
11767 | GP value in the section_processing routine. */ | |
11768 | ||
b34976b6 | 11769 | bfd_boolean |
9719ad41 RS |
11770 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
11771 | const void *location, | |
11772 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 11773 | { |
cc2e31b9 | 11774 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
11775 | { |
11776 | bfd_byte *c; | |
11777 | ||
11778 | if (elf_section_data (section) == NULL) | |
11779 | { | |
11780 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 11781 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 11782 | if (elf_section_data (section) == NULL) |
b34976b6 | 11783 | return FALSE; |
b49e97c9 | 11784 | } |
f0abc2a1 | 11785 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
11786 | if (c == NULL) |
11787 | { | |
eea6121a | 11788 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 11789 | if (c == NULL) |
b34976b6 | 11790 | return FALSE; |
f0abc2a1 | 11791 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
11792 | } |
11793 | ||
9719ad41 | 11794 | memcpy (c + offset, location, count); |
b49e97c9 TS |
11795 | } |
11796 | ||
11797 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
11798 | count); | |
11799 | } | |
11800 | ||
11801 | /* This is almost identical to bfd_generic_get_... except that some | |
11802 | MIPS relocations need to be handled specially. Sigh. */ | |
11803 | ||
11804 | bfd_byte * | |
9719ad41 RS |
11805 | _bfd_elf_mips_get_relocated_section_contents |
11806 | (bfd *abfd, | |
11807 | struct bfd_link_info *link_info, | |
11808 | struct bfd_link_order *link_order, | |
11809 | bfd_byte *data, | |
11810 | bfd_boolean relocatable, | |
11811 | asymbol **symbols) | |
b49e97c9 TS |
11812 | { |
11813 | /* Get enough memory to hold the stuff */ | |
11814 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
11815 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 11816 | bfd_size_type sz; |
b49e97c9 TS |
11817 | |
11818 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
11819 | arelent **reloc_vector = NULL; | |
11820 | long reloc_count; | |
11821 | ||
11822 | if (reloc_size < 0) | |
11823 | goto error_return; | |
11824 | ||
9719ad41 | 11825 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
11826 | if (reloc_vector == NULL && reloc_size != 0) |
11827 | goto error_return; | |
11828 | ||
11829 | /* read in the section */ | |
eea6121a AM |
11830 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
11831 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
11832 | goto error_return; |
11833 | ||
b49e97c9 TS |
11834 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
11835 | input_section, | |
11836 | reloc_vector, | |
11837 | symbols); | |
11838 | if (reloc_count < 0) | |
11839 | goto error_return; | |
11840 | ||
11841 | if (reloc_count > 0) | |
11842 | { | |
11843 | arelent **parent; | |
11844 | /* for mips */ | |
11845 | int gp_found; | |
11846 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
11847 | ||
11848 | { | |
11849 | struct bfd_hash_entry *h; | |
11850 | struct bfd_link_hash_entry *lh; | |
11851 | /* Skip all this stuff if we aren't mixing formats. */ | |
11852 | if (abfd && input_bfd | |
11853 | && abfd->xvec == input_bfd->xvec) | |
11854 | lh = 0; | |
11855 | else | |
11856 | { | |
b34976b6 | 11857 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
11858 | lh = (struct bfd_link_hash_entry *) h; |
11859 | } | |
11860 | lookup: | |
11861 | if (lh) | |
11862 | { | |
11863 | switch (lh->type) | |
11864 | { | |
11865 | case bfd_link_hash_undefined: | |
11866 | case bfd_link_hash_undefweak: | |
11867 | case bfd_link_hash_common: | |
11868 | gp_found = 0; | |
11869 | break; | |
11870 | case bfd_link_hash_defined: | |
11871 | case bfd_link_hash_defweak: | |
11872 | gp_found = 1; | |
11873 | gp = lh->u.def.value; | |
11874 | break; | |
11875 | case bfd_link_hash_indirect: | |
11876 | case bfd_link_hash_warning: | |
11877 | lh = lh->u.i.link; | |
11878 | /* @@FIXME ignoring warning for now */ | |
11879 | goto lookup; | |
11880 | case bfd_link_hash_new: | |
11881 | default: | |
11882 | abort (); | |
11883 | } | |
11884 | } | |
11885 | else | |
11886 | gp_found = 0; | |
11887 | } | |
11888 | /* end mips */ | |
9719ad41 | 11889 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 11890 | { |
9719ad41 | 11891 | char *error_message = NULL; |
b49e97c9 TS |
11892 | bfd_reloc_status_type r; |
11893 | ||
11894 | /* Specific to MIPS: Deal with relocation types that require | |
11895 | knowing the gp of the output bfd. */ | |
11896 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 11897 | |
8236346f EC |
11898 | /* If we've managed to find the gp and have a special |
11899 | function for the relocation then go ahead, else default | |
11900 | to the generic handling. */ | |
11901 | if (gp_found | |
11902 | && (*parent)->howto->special_function | |
11903 | == _bfd_mips_elf32_gprel16_reloc) | |
11904 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
11905 | input_section, relocatable, | |
11906 | data, gp); | |
11907 | else | |
86324f90 | 11908 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
11909 | input_section, |
11910 | relocatable ? abfd : NULL, | |
11911 | &error_message); | |
b49e97c9 | 11912 | |
1049f94e | 11913 | if (relocatable) |
b49e97c9 TS |
11914 | { |
11915 | asection *os = input_section->output_section; | |
11916 | ||
11917 | /* A partial link, so keep the relocs */ | |
11918 | os->orelocation[os->reloc_count] = *parent; | |
11919 | os->reloc_count++; | |
11920 | } | |
11921 | ||
11922 | if (r != bfd_reloc_ok) | |
11923 | { | |
11924 | switch (r) | |
11925 | { | |
11926 | case bfd_reloc_undefined: | |
11927 | if (!((*link_info->callbacks->undefined_symbol) | |
11928 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 11929 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
11930 | goto error_return; |
11931 | break; | |
11932 | case bfd_reloc_dangerous: | |
9719ad41 | 11933 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
11934 | if (!((*link_info->callbacks->reloc_dangerous) |
11935 | (link_info, error_message, input_bfd, input_section, | |
11936 | (*parent)->address))) | |
11937 | goto error_return; | |
11938 | break; | |
11939 | case bfd_reloc_overflow: | |
11940 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
11941 | (link_info, NULL, |
11942 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
11943 | (*parent)->howto->name, (*parent)->addend, |
11944 | input_bfd, input_section, (*parent)->address))) | |
11945 | goto error_return; | |
11946 | break; | |
11947 | case bfd_reloc_outofrange: | |
11948 | default: | |
11949 | abort (); | |
11950 | break; | |
11951 | } | |
11952 | ||
11953 | } | |
11954 | } | |
11955 | } | |
11956 | if (reloc_vector != NULL) | |
11957 | free (reloc_vector); | |
11958 | return data; | |
11959 | ||
11960 | error_return: | |
11961 | if (reloc_vector != NULL) | |
11962 | free (reloc_vector); | |
11963 | return NULL; | |
11964 | } | |
11965 | \f | |
df58fc94 RS |
11966 | static bfd_boolean |
11967 | mips_elf_relax_delete_bytes (bfd *abfd, | |
11968 | asection *sec, bfd_vma addr, int count) | |
11969 | { | |
11970 | Elf_Internal_Shdr *symtab_hdr; | |
11971 | unsigned int sec_shndx; | |
11972 | bfd_byte *contents; | |
11973 | Elf_Internal_Rela *irel, *irelend; | |
11974 | Elf_Internal_Sym *isym; | |
11975 | Elf_Internal_Sym *isymend; | |
11976 | struct elf_link_hash_entry **sym_hashes; | |
11977 | struct elf_link_hash_entry **end_hashes; | |
11978 | struct elf_link_hash_entry **start_hashes; | |
11979 | unsigned int symcount; | |
11980 | ||
11981 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
11982 | contents = elf_section_data (sec)->this_hdr.contents; | |
11983 | ||
11984 | irel = elf_section_data (sec)->relocs; | |
11985 | irelend = irel + sec->reloc_count; | |
11986 | ||
11987 | /* Actually delete the bytes. */ | |
11988 | memmove (contents + addr, contents + addr + count, | |
11989 | (size_t) (sec->size - addr - count)); | |
11990 | sec->size -= count; | |
11991 | ||
11992 | /* Adjust all the relocs. */ | |
11993 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
11994 | { | |
11995 | /* Get the new reloc address. */ | |
11996 | if (irel->r_offset > addr) | |
11997 | irel->r_offset -= count; | |
11998 | } | |
11999 | ||
12000 | BFD_ASSERT (addr % 2 == 0); | |
12001 | BFD_ASSERT (count % 2 == 0); | |
12002 | ||
12003 | /* Adjust the local symbols defined in this section. */ | |
12004 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12005 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12006 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 12007 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
12008 | isym->st_value -= count; |
12009 | ||
12010 | /* Now adjust the global symbols defined in this section. */ | |
12011 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
12012 | - symtab_hdr->sh_info); | |
12013 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
12014 | end_hashes = sym_hashes + symcount; | |
12015 | ||
12016 | for (; sym_hashes < end_hashes; sym_hashes++) | |
12017 | { | |
12018 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
12019 | ||
12020 | if ((sym_hash->root.type == bfd_link_hash_defined | |
12021 | || sym_hash->root.type == bfd_link_hash_defweak) | |
12022 | && sym_hash->root.u.def.section == sec) | |
12023 | { | |
2309ddf2 | 12024 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 12025 | |
df58fc94 RS |
12026 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
12027 | value &= MINUS_TWO; | |
12028 | if (value > addr) | |
12029 | sym_hash->root.u.def.value -= count; | |
12030 | } | |
12031 | } | |
12032 | ||
12033 | return TRUE; | |
12034 | } | |
12035 | ||
12036 | ||
12037 | /* Opcodes needed for microMIPS relaxation as found in | |
12038 | opcodes/micromips-opc.c. */ | |
12039 | ||
12040 | struct opcode_descriptor { | |
12041 | unsigned long match; | |
12042 | unsigned long mask; | |
12043 | }; | |
12044 | ||
12045 | /* The $ra register aka $31. */ | |
12046 | ||
12047 | #define RA 31 | |
12048 | ||
12049 | /* 32-bit instruction format register fields. */ | |
12050 | ||
12051 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
12052 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
12053 | ||
12054 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
12055 | ||
12056 | #define OP16_VALID_REG(r) \ | |
12057 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
12058 | ||
12059 | ||
12060 | /* 32-bit and 16-bit branches. */ | |
12061 | ||
12062 | static const struct opcode_descriptor b_insns_32[] = { | |
12063 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
12064 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
12065 | { 0, 0 } /* End marker for find_match(). */ | |
12066 | }; | |
12067 | ||
12068 | static const struct opcode_descriptor bc_insn_32 = | |
12069 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
12070 | ||
12071 | static const struct opcode_descriptor bz_insn_32 = | |
12072 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
12073 | ||
12074 | static const struct opcode_descriptor bzal_insn_32 = | |
12075 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
12076 | ||
12077 | static const struct opcode_descriptor beq_insn_32 = | |
12078 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
12079 | ||
12080 | static const struct opcode_descriptor b_insn_16 = | |
12081 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
12082 | ||
12083 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 12084 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
12085 | |
12086 | ||
12087 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
12088 | ||
12089 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
12090 | eq and second the ne. This convention is used when replacing a | |
12091 | 32-bit BEQ/BNE with the 16-bit version. */ | |
12092 | ||
12093 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
12094 | ||
12095 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
12096 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
12097 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
12098 | { 0, 0 } /* End marker for find_match(). */ | |
12099 | }; | |
12100 | ||
12101 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
12102 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
12103 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
12104 | { 0, 0 } /* End marker for find_match(). */ | |
12105 | }; | |
12106 | ||
12107 | static const struct opcode_descriptor bzc_insns_32[] = { | |
12108 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
12109 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
12110 | { 0, 0 } /* End marker for find_match(). */ | |
12111 | }; | |
12112 | ||
12113 | static const struct opcode_descriptor bz_insns_16[] = { | |
12114 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
12115 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
12116 | { 0, 0 } /* End marker for find_match(). */ | |
12117 | }; | |
12118 | ||
12119 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
12120 | ||
12121 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0x17) + 2) | |
12122 | #define BZ16_REG_FIELD(r) \ | |
12123 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 7) | |
12124 | ||
12125 | ||
12126 | /* 32-bit instructions with a delay slot. */ | |
12127 | ||
12128 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
12129 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
12130 | ||
12131 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
12132 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
12133 | ||
12134 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
12135 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
12136 | ||
12137 | static const struct opcode_descriptor j_insn_32 = | |
12138 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
12139 | ||
12140 | static const struct opcode_descriptor jalr_insn_32 = | |
12141 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
12142 | ||
12143 | /* This table can be compacted, because no opcode replacement is made. */ | |
12144 | ||
12145 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
12146 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
12147 | ||
12148 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
12149 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
12150 | ||
12151 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
12152 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
12153 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
12154 | { 0, 0 } /* End marker for find_match(). */ | |
12155 | }; | |
12156 | ||
12157 | /* This table can be compacted, because no opcode replacement is made. */ | |
12158 | ||
12159 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
12160 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
12161 | ||
12162 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
12163 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
12164 | { 0, 0 } /* End marker for find_match(). */ | |
12165 | }; | |
12166 | ||
12167 | ||
12168 | /* 16-bit instructions with a delay slot. */ | |
12169 | ||
12170 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
12171 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
12172 | ||
12173 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
12174 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
12175 | ||
12176 | static const struct opcode_descriptor jr_insn_16 = | |
12177 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
12178 | ||
12179 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
12180 | ||
12181 | /* This table can be compacted, because no opcode replacement is made. */ | |
12182 | ||
12183 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
12184 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
12185 | ||
12186 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
12187 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
12188 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
12189 | { 0, 0 } /* End marker for find_match(). */ | |
12190 | }; | |
12191 | ||
12192 | ||
12193 | /* LUI instruction. */ | |
12194 | ||
12195 | static const struct opcode_descriptor lui_insn = | |
12196 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
12197 | ||
12198 | ||
12199 | /* ADDIU instruction. */ | |
12200 | ||
12201 | static const struct opcode_descriptor addiu_insn = | |
12202 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
12203 | ||
12204 | static const struct opcode_descriptor addiupc_insn = | |
12205 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
12206 | ||
12207 | #define ADDIUPC_REG_FIELD(r) \ | |
12208 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
12209 | ||
12210 | ||
12211 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
12212 | ||
12213 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
12214 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
12215 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
12216 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
12217 | ||
12218 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
12219 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
12220 | ||
12221 | static const struct opcode_descriptor move_insns_32[] = { | |
12222 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ | |
12223 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ | |
12224 | { 0, 0 } /* End marker for find_match(). */ | |
12225 | }; | |
12226 | ||
12227 | static const struct opcode_descriptor move_insn_16 = | |
12228 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
12229 | ||
12230 | ||
12231 | /* NOP instructions. */ | |
12232 | ||
12233 | static const struct opcode_descriptor nop_insn_32 = | |
12234 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
12235 | ||
12236 | static const struct opcode_descriptor nop_insn_16 = | |
12237 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
12238 | ||
12239 | ||
12240 | /* Instruction match support. */ | |
12241 | ||
12242 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
12243 | ||
12244 | static int | |
12245 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
12246 | { | |
12247 | unsigned long indx; | |
12248 | ||
12249 | for (indx = 0; insn[indx].mask != 0; indx++) | |
12250 | if (MATCH (opcode, insn[indx])) | |
12251 | return indx; | |
12252 | ||
12253 | return -1; | |
12254 | } | |
12255 | ||
12256 | ||
12257 | /* Branch and delay slot decoding support. */ | |
12258 | ||
12259 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
12260 | return the minimum length of its delay slot, otherwise return 0. | |
12261 | Non-zero results are not definitive as we might be checking against | |
12262 | the second half of another instruction. */ | |
12263 | ||
12264 | static int | |
12265 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
12266 | { | |
12267 | unsigned long opcode; | |
12268 | int bdsize; | |
12269 | ||
12270 | opcode = bfd_get_16 (abfd, ptr); | |
12271 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
12272 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
12273 | bdsize = 4; | |
12274 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
12275 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
12276 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
12277 | bdsize = 2; | |
12278 | else | |
12279 | /* No delay slot. */ | |
12280 | bdsize = 0; | |
12281 | ||
12282 | return bdsize; | |
12283 | } | |
12284 | ||
12285 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
12286 | return the minimum length of its delay slot, otherwise return 0. | |
12287 | Non-zero results are not definitive as we might be checking against | |
12288 | the second half of another instruction. */ | |
12289 | ||
12290 | static int | |
12291 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
12292 | { | |
12293 | unsigned long opcode; | |
12294 | int bdsize; | |
12295 | ||
d21911ea | 12296 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12297 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
12298 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
12299 | bdsize = 4; | |
12300 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
12301 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
12302 | bdsize = 2; | |
12303 | else | |
12304 | /* No delay slot. */ | |
12305 | bdsize = 0; | |
12306 | ||
12307 | return bdsize; | |
12308 | } | |
12309 | ||
12310 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
12311 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
12312 | ||
12313 | static bfd_boolean | |
12314 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) | |
12315 | { | |
12316 | unsigned long opcode; | |
12317 | ||
12318 | opcode = bfd_get_16 (abfd, ptr); | |
12319 | if (MATCH (opcode, b_insn_16) | |
12320 | /* B16 */ | |
12321 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
12322 | /* JR16 */ | |
12323 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
12324 | /* BEQZ16, BNEZ16 */ | |
12325 | || (MATCH (opcode, jalr_insn_16_bd32) | |
12326 | /* JALR16 */ | |
12327 | && reg != JR16_REG (opcode) && reg != RA)) | |
12328 | return TRUE; | |
12329 | ||
12330 | return FALSE; | |
12331 | } | |
12332 | ||
12333 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
12334 | then return TRUE, otherwise FALSE. */ | |
12335 | ||
f41e5fcc | 12336 | static bfd_boolean |
df58fc94 RS |
12337 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
12338 | { | |
12339 | unsigned long opcode; | |
12340 | ||
d21911ea | 12341 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12342 | if (MATCH (opcode, j_insn_32) |
12343 | /* J */ | |
12344 | || MATCH (opcode, bc_insn_32) | |
12345 | /* BC1F, BC1T, BC2F, BC2T */ | |
12346 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
12347 | /* JAL, JALX */ | |
12348 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
12349 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
12350 | || (MATCH (opcode, bzal_insn_32) | |
12351 | /* BGEZAL, BLTZAL */ | |
12352 | && reg != OP32_SREG (opcode) && reg != RA) | |
12353 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
12354 | /* JALR, JALR.HB, BEQ, BNE */ | |
12355 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
12356 | return TRUE; | |
12357 | ||
12358 | return FALSE; | |
12359 | } | |
12360 | ||
80cab405 MR |
12361 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
12362 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
12363 | then return TRUE, otherwise FALSE. */ | |
df58fc94 RS |
12364 | |
12365 | static bfd_boolean | |
80cab405 MR |
12366 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
12367 | const Elf_Internal_Rela *internal_relocs, | |
12368 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 12369 | { |
80cab405 MR |
12370 | const Elf_Internal_Rela *irel; |
12371 | unsigned long opcode; | |
12372 | ||
d21911ea | 12373 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 MR |
12374 | if (find_match (opcode, bzc_insns_32) < 0) |
12375 | return FALSE; | |
df58fc94 RS |
12376 | |
12377 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
12378 | if (irel->r_offset == offset |
12379 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
12380 | return TRUE; | |
12381 | ||
df58fc94 RS |
12382 | return FALSE; |
12383 | } | |
80cab405 MR |
12384 | |
12385 | /* Bitsize checking. */ | |
12386 | #define IS_BITSIZE(val, N) \ | |
12387 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
12388 | - (1ULL << ((N) - 1))) == (val)) | |
12389 | ||
df58fc94 RS |
12390 | \f |
12391 | bfd_boolean | |
12392 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, | |
12393 | struct bfd_link_info *link_info, | |
12394 | bfd_boolean *again) | |
12395 | { | |
12396 | Elf_Internal_Shdr *symtab_hdr; | |
12397 | Elf_Internal_Rela *internal_relocs; | |
12398 | Elf_Internal_Rela *irel, *irelend; | |
12399 | bfd_byte *contents = NULL; | |
12400 | Elf_Internal_Sym *isymbuf = NULL; | |
12401 | ||
12402 | /* Assume nothing changes. */ | |
12403 | *again = FALSE; | |
12404 | ||
12405 | /* We don't have to do anything for a relocatable link, if | |
12406 | this section does not have relocs, or if this is not a | |
12407 | code section. */ | |
12408 | ||
12409 | if (link_info->relocatable | |
12410 | || (sec->flags & SEC_RELOC) == 0 | |
12411 | || sec->reloc_count == 0 | |
12412 | || (sec->flags & SEC_CODE) == 0) | |
12413 | return TRUE; | |
12414 | ||
12415 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12416 | ||
12417 | /* Get a copy of the native relocations. */ | |
12418 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 12419 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
12420 | link_info->keep_memory)); |
12421 | if (internal_relocs == NULL) | |
12422 | goto error_return; | |
12423 | ||
12424 | /* Walk through them looking for relaxing opportunities. */ | |
12425 | irelend = internal_relocs + sec->reloc_count; | |
12426 | for (irel = internal_relocs; irel < irelend; irel++) | |
12427 | { | |
12428 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
12429 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
12430 | bfd_boolean target_is_micromips_code_p; | |
12431 | unsigned long opcode; | |
12432 | bfd_vma symval; | |
12433 | bfd_vma pcrval; | |
2309ddf2 | 12434 | bfd_byte *ptr; |
df58fc94 RS |
12435 | int fndopc; |
12436 | ||
12437 | /* The number of bytes to delete for relaxation and from where | |
12438 | to delete these bytes starting at irel->r_offset. */ | |
12439 | int delcnt = 0; | |
12440 | int deloff = 0; | |
12441 | ||
12442 | /* If this isn't something that can be relaxed, then ignore | |
12443 | this reloc. */ | |
12444 | if (r_type != R_MICROMIPS_HI16 | |
12445 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 12446 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
12447 | continue; |
12448 | ||
12449 | /* Get the section contents if we haven't done so already. */ | |
12450 | if (contents == NULL) | |
12451 | { | |
12452 | /* Get cached copy if it exists. */ | |
12453 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
12454 | contents = elf_section_data (sec)->this_hdr.contents; | |
12455 | /* Go get them off disk. */ | |
12456 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
12457 | goto error_return; | |
12458 | } | |
2309ddf2 | 12459 | ptr = contents + irel->r_offset; |
df58fc94 RS |
12460 | |
12461 | /* Read this BFD's local symbols if we haven't done so already. */ | |
12462 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
12463 | { | |
12464 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12465 | if (isymbuf == NULL) | |
12466 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
12467 | symtab_hdr->sh_info, 0, | |
12468 | NULL, NULL, NULL); | |
12469 | if (isymbuf == NULL) | |
12470 | goto error_return; | |
12471 | } | |
12472 | ||
12473 | /* Get the value of the symbol referred to by the reloc. */ | |
12474 | if (r_symndx < symtab_hdr->sh_info) | |
12475 | { | |
12476 | /* A local symbol. */ | |
12477 | Elf_Internal_Sym *isym; | |
12478 | asection *sym_sec; | |
12479 | ||
12480 | isym = isymbuf + r_symndx; | |
12481 | if (isym->st_shndx == SHN_UNDEF) | |
12482 | sym_sec = bfd_und_section_ptr; | |
12483 | else if (isym->st_shndx == SHN_ABS) | |
12484 | sym_sec = bfd_abs_section_ptr; | |
12485 | else if (isym->st_shndx == SHN_COMMON) | |
12486 | sym_sec = bfd_com_section_ptr; | |
12487 | else | |
12488 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
12489 | symval = (isym->st_value | |
12490 | + sym_sec->output_section->vma | |
12491 | + sym_sec->output_offset); | |
12492 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
12493 | } | |
12494 | else | |
12495 | { | |
12496 | unsigned long indx; | |
12497 | struct elf_link_hash_entry *h; | |
12498 | ||
12499 | /* An external symbol. */ | |
12500 | indx = r_symndx - symtab_hdr->sh_info; | |
12501 | h = elf_sym_hashes (abfd)[indx]; | |
12502 | BFD_ASSERT (h != NULL); | |
12503 | ||
12504 | if (h->root.type != bfd_link_hash_defined | |
12505 | && h->root.type != bfd_link_hash_defweak) | |
12506 | /* This appears to be a reference to an undefined | |
12507 | symbol. Just ignore it -- it will be caught by the | |
12508 | regular reloc processing. */ | |
12509 | continue; | |
12510 | ||
12511 | symval = (h->root.u.def.value | |
12512 | + h->root.u.def.section->output_section->vma | |
12513 | + h->root.u.def.section->output_offset); | |
12514 | target_is_micromips_code_p = (!h->needs_plt | |
12515 | && ELF_ST_IS_MICROMIPS (h->other)); | |
12516 | } | |
12517 | ||
12518 | ||
12519 | /* For simplicity of coding, we are going to modify the | |
12520 | section contents, the section relocs, and the BFD symbol | |
12521 | table. We must tell the rest of the code not to free up this | |
12522 | information. It would be possible to instead create a table | |
12523 | of changes which have to be made, as is done in coff-mips.c; | |
12524 | that would be more work, but would require less memory when | |
12525 | the linker is run. */ | |
12526 | ||
12527 | /* Only 32-bit instructions relaxed. */ | |
12528 | if (irel->r_offset + 4 > sec->size) | |
12529 | continue; | |
12530 | ||
d21911ea | 12531 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12532 | |
12533 | /* This is the pc-relative distance from the instruction the | |
12534 | relocation is applied to, to the symbol referred. */ | |
12535 | pcrval = (symval | |
12536 | - (sec->output_section->vma + sec->output_offset) | |
12537 | - irel->r_offset); | |
12538 | ||
12539 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
12540 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or | |
12541 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
12542 | ||
12543 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) | |
12544 | ||
12545 | where pcrval has first to be adjusted to apply against the LO16 | |
12546 | location (we make the adjustment later on, when we have figured | |
12547 | out the offset). */ | |
12548 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) | |
12549 | { | |
80cab405 | 12550 | bfd_boolean bzc = FALSE; |
df58fc94 RS |
12551 | unsigned long nextopc; |
12552 | unsigned long reg; | |
12553 | bfd_vma offset; | |
12554 | ||
12555 | /* Give up if the previous reloc was a HI16 against this symbol | |
12556 | too. */ | |
12557 | if (irel > internal_relocs | |
12558 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
12559 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
12560 | continue; | |
12561 | ||
12562 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
12563 | if (irel + 1 >= irelend | |
12564 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
12565 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
12566 | continue; | |
12567 | ||
12568 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
12569 | if (irel + 2 >= irelend | |
12570 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
12571 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
12572 | continue; | |
12573 | ||
80cab405 MR |
12574 | /* See if the LUI instruction *might* be in a branch delay slot. |
12575 | We check whether what looks like a 16-bit branch or jump is | |
12576 | actually an immediate argument to a compact branch, and let | |
12577 | it through if so. */ | |
df58fc94 | 12578 | if (irel->r_offset >= 2 |
2309ddf2 | 12579 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 12580 | && !(irel->r_offset >= 4 |
80cab405 MR |
12581 | && (bzc = check_relocated_bzc (abfd, |
12582 | ptr - 4, irel->r_offset - 4, | |
12583 | internal_relocs, irelend)))) | |
df58fc94 RS |
12584 | continue; |
12585 | if (irel->r_offset >= 4 | |
80cab405 | 12586 | && !bzc |
2309ddf2 | 12587 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
12588 | continue; |
12589 | ||
12590 | reg = OP32_SREG (opcode); | |
12591 | ||
12592 | /* We only relax adjacent instructions or ones separated with | |
12593 | a branch or jump that has a delay slot. The branch or jump | |
12594 | must not fiddle with the register used to hold the address. | |
12595 | Subtract 4 for the LUI itself. */ | |
12596 | offset = irel[1].r_offset - irel[0].r_offset; | |
12597 | switch (offset - 4) | |
12598 | { | |
12599 | case 0: | |
12600 | break; | |
12601 | case 2: | |
2309ddf2 | 12602 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12603 | break; |
12604 | continue; | |
12605 | case 4: | |
2309ddf2 | 12606 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12607 | break; |
12608 | continue; | |
12609 | default: | |
12610 | continue; | |
12611 | } | |
12612 | ||
d21911ea | 12613 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
12614 | |
12615 | /* Give up unless the same register is used with both | |
12616 | relocations. */ | |
12617 | if (OP32_SREG (nextopc) != reg) | |
12618 | continue; | |
12619 | ||
12620 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
12621 | and rounding up to take masking of the two LSBs into account. */ | |
12622 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
12623 | ||
12624 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
12625 | if (IS_BITSIZE (symval, 16)) | |
12626 | { | |
12627 | /* Fix the relocation's type. */ | |
12628 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
12629 | ||
12630 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
12631 | source register in bits 20:16. This register becomes $0 | |
12632 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
12633 | nextopc &= ~0x001f0000; | |
12634 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
12635 | contents + irel[1].r_offset); | |
12636 | } | |
12637 | ||
12638 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
12639 | We add 4 to take LUI deletion into account while checking | |
12640 | the PC-relative distance. */ | |
12641 | else if (symval % 4 == 0 | |
12642 | && IS_BITSIZE (pcrval + 4, 25) | |
12643 | && MATCH (nextopc, addiu_insn) | |
12644 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
12645 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
12646 | { | |
12647 | /* Fix the relocation's type. */ | |
12648 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
12649 | ||
12650 | /* Replace ADDIU with the ADDIUPC version. */ | |
12651 | nextopc = (addiupc_insn.match | |
12652 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
12653 | ||
d21911ea MR |
12654 | bfd_put_micromips_32 (abfd, nextopc, |
12655 | contents + irel[1].r_offset); | |
df58fc94 RS |
12656 | } |
12657 | ||
12658 | /* Can't do anything, give up, sigh... */ | |
12659 | else | |
12660 | continue; | |
12661 | ||
12662 | /* Fix the relocation's type. */ | |
12663 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
12664 | ||
12665 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
12666 | delcnt = 4; | |
12667 | deloff = 0; | |
12668 | } | |
12669 | ||
12670 | /* Compact branch relaxation -- due to the multitude of macros | |
12671 | employed by the compiler/assembler, compact branches are not | |
12672 | always generated. Obviously, this can/will be fixed elsewhere, | |
12673 | but there is no drawback in double checking it here. */ | |
12674 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12675 | && irel->r_offset + 5 < sec->size | |
12676 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12677 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
2309ddf2 | 12678 | && MATCH (bfd_get_16 (abfd, ptr + 4), nop_insn_16)) |
df58fc94 RS |
12679 | { |
12680 | unsigned long reg; | |
12681 | ||
12682 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12683 | ||
12684 | /* Replace BEQZ/BNEZ with the compact version. */ | |
12685 | opcode = (bzc_insns_32[fndopc].match | |
12686 | | BZC32_REG_FIELD (reg) | |
12687 | | (opcode & 0xffff)); /* Addend value. */ | |
12688 | ||
d21911ea | 12689 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 RS |
12690 | |
12691 | /* Delete the 16-bit delay slot NOP: two bytes from | |
12692 | irel->offset + 4. */ | |
12693 | delcnt = 2; | |
12694 | deloff = 4; | |
12695 | } | |
12696 | ||
12697 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
12698 | to check the distance from the next instruction, so subtract 2. */ | |
12699 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12700 | && IS_BITSIZE (pcrval - 2, 11) | |
12701 | && find_match (opcode, b_insns_32) >= 0) | |
12702 | { | |
12703 | /* Fix the relocation's type. */ | |
12704 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
12705 | ||
a8685210 | 12706 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12707 | bfd_put_16 (abfd, |
12708 | (b_insn_16.match | |
12709 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 12710 | ptr); |
df58fc94 RS |
12711 | |
12712 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12713 | delcnt = 2; | |
12714 | deloff = 2; | |
12715 | } | |
12716 | ||
12717 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
12718 | to check the distance from the next instruction, so subtract 2. */ | |
12719 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12720 | && IS_BITSIZE (pcrval - 2, 8) | |
12721 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12722 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
12723 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
12724 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
12725 | { | |
12726 | unsigned long reg; | |
12727 | ||
12728 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12729 | ||
12730 | /* Fix the relocation's type. */ | |
12731 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
12732 | ||
a8685210 | 12733 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12734 | bfd_put_16 (abfd, |
12735 | (bz_insns_16[fndopc].match | |
12736 | | BZ16_REG_FIELD (reg) | |
12737 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 12738 | ptr); |
df58fc94 RS |
12739 | |
12740 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12741 | delcnt = 2; | |
12742 | deloff = 2; | |
12743 | } | |
12744 | ||
12745 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
12746 | else if (r_type == R_MICROMIPS_26_S1 | |
12747 | && target_is_micromips_code_p | |
12748 | && irel->r_offset + 7 < sec->size | |
12749 | && MATCH (opcode, jal_insn_32_bd32)) | |
12750 | { | |
12751 | unsigned long n32opc; | |
12752 | bfd_boolean relaxed = FALSE; | |
12753 | ||
d21911ea | 12754 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
12755 | |
12756 | if (MATCH (n32opc, nop_insn_32)) | |
12757 | { | |
12758 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 12759 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 RS |
12760 | |
12761 | relaxed = TRUE; | |
12762 | } | |
12763 | else if (find_match (n32opc, move_insns_32) >= 0) | |
12764 | { | |
12765 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
12766 | bfd_put_16 (abfd, | |
12767 | (move_insn_16.match | |
12768 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
12769 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 12770 | ptr + 4); |
df58fc94 RS |
12771 | |
12772 | relaxed = TRUE; | |
12773 | } | |
12774 | /* Other 32-bit instructions relaxable to 16-bit | |
12775 | instructions will be handled here later. */ | |
12776 | ||
12777 | if (relaxed) | |
12778 | { | |
12779 | /* JAL with 32-bit delay slot that is changed to a JALS | |
12780 | with 16-bit delay slot. */ | |
d21911ea | 12781 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
12782 | |
12783 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
12784 | delcnt = 2; | |
12785 | deloff = 6; | |
12786 | } | |
12787 | } | |
12788 | ||
12789 | if (delcnt != 0) | |
12790 | { | |
12791 | /* Note that we've changed the relocs, section contents, etc. */ | |
12792 | elf_section_data (sec)->relocs = internal_relocs; | |
12793 | elf_section_data (sec)->this_hdr.contents = contents; | |
12794 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12795 | ||
12796 | /* Delete bytes depending on the delcnt and deloff. */ | |
12797 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
12798 | irel->r_offset + deloff, delcnt)) | |
12799 | goto error_return; | |
12800 | ||
12801 | /* That will change things, so we should relax again. | |
12802 | Note that this is not required, and it may be slow. */ | |
12803 | *again = TRUE; | |
12804 | } | |
12805 | } | |
12806 | ||
12807 | if (isymbuf != NULL | |
12808 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12809 | { | |
12810 | if (! link_info->keep_memory) | |
12811 | free (isymbuf); | |
12812 | else | |
12813 | { | |
12814 | /* Cache the symbols for elf_link_input_bfd. */ | |
12815 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12816 | } | |
12817 | } | |
12818 | ||
12819 | if (contents != NULL | |
12820 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12821 | { | |
12822 | if (! link_info->keep_memory) | |
12823 | free (contents); | |
12824 | else | |
12825 | { | |
12826 | /* Cache the section contents for elf_link_input_bfd. */ | |
12827 | elf_section_data (sec)->this_hdr.contents = contents; | |
12828 | } | |
12829 | } | |
12830 | ||
12831 | if (internal_relocs != NULL | |
12832 | && elf_section_data (sec)->relocs != internal_relocs) | |
12833 | free (internal_relocs); | |
12834 | ||
12835 | return TRUE; | |
12836 | ||
12837 | error_return: | |
12838 | if (isymbuf != NULL | |
12839 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12840 | free (isymbuf); | |
12841 | if (contents != NULL | |
12842 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12843 | free (contents); | |
12844 | if (internal_relocs != NULL | |
12845 | && elf_section_data (sec)->relocs != internal_relocs) | |
12846 | free (internal_relocs); | |
12847 | ||
12848 | return FALSE; | |
12849 | } | |
12850 | \f | |
b49e97c9 TS |
12851 | /* Create a MIPS ELF linker hash table. */ |
12852 | ||
12853 | struct bfd_link_hash_table * | |
9719ad41 | 12854 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
12855 | { |
12856 | struct mips_elf_link_hash_table *ret; | |
12857 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
12858 | ||
7bf52ea2 | 12859 | ret = bfd_zmalloc (amt); |
9719ad41 | 12860 | if (ret == NULL) |
b49e97c9 TS |
12861 | return NULL; |
12862 | ||
66eb6687 AM |
12863 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
12864 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
12865 | sizeof (struct mips_elf_link_hash_entry), |
12866 | MIPS_ELF_DATA)) | |
b49e97c9 | 12867 | { |
e2d34d7d | 12868 | free (ret); |
b49e97c9 TS |
12869 | return NULL; |
12870 | } | |
12871 | ||
b49e97c9 TS |
12872 | return &ret->root.root; |
12873 | } | |
0a44bf69 RS |
12874 | |
12875 | /* Likewise, but indicate that the target is VxWorks. */ | |
12876 | ||
12877 | struct bfd_link_hash_table * | |
12878 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
12879 | { | |
12880 | struct bfd_link_hash_table *ret; | |
12881 | ||
12882 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
12883 | if (ret) | |
12884 | { | |
12885 | struct mips_elf_link_hash_table *htab; | |
12886 | ||
12887 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
12888 | htab->use_plts_and_copy_relocs = TRUE; |
12889 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
12890 | } |
12891 | return ret; | |
12892 | } | |
861fb55a DJ |
12893 | |
12894 | /* A function that the linker calls if we are allowed to use PLTs | |
12895 | and copy relocs. */ | |
12896 | ||
12897 | void | |
12898 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
12899 | { | |
12900 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
12901 | } | |
b49e97c9 TS |
12902 | \f |
12903 | /* We need to use a special link routine to handle the .reginfo and | |
12904 | the .mdebug sections. We need to merge all instances of these | |
12905 | sections together, not write them all out sequentially. */ | |
12906 | ||
b34976b6 | 12907 | bfd_boolean |
9719ad41 | 12908 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 12909 | { |
b49e97c9 TS |
12910 | asection *o; |
12911 | struct bfd_link_order *p; | |
12912 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
12913 | asection *rtproc_sec; | |
12914 | Elf32_RegInfo reginfo; | |
12915 | struct ecoff_debug_info debug; | |
861fb55a | 12916 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
12917 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
12918 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 12919 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 12920 | void *mdebug_handle = NULL; |
b49e97c9 TS |
12921 | asection *s; |
12922 | EXTR esym; | |
12923 | unsigned int i; | |
12924 | bfd_size_type amt; | |
0a44bf69 | 12925 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
12926 | |
12927 | static const char * const secname[] = | |
12928 | { | |
12929 | ".text", ".init", ".fini", ".data", | |
12930 | ".rodata", ".sdata", ".sbss", ".bss" | |
12931 | }; | |
12932 | static const int sc[] = | |
12933 | { | |
12934 | scText, scInit, scFini, scData, | |
12935 | scRData, scSData, scSBss, scBss | |
12936 | }; | |
12937 | ||
d4596a51 RS |
12938 | /* Sort the dynamic symbols so that those with GOT entries come after |
12939 | those without. */ | |
0a44bf69 | 12940 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
12941 | BFD_ASSERT (htab != NULL); |
12942 | ||
d4596a51 RS |
12943 | if (!mips_elf_sort_hash_table (abfd, info)) |
12944 | return FALSE; | |
b49e97c9 | 12945 | |
861fb55a DJ |
12946 | /* Create any scheduled LA25 stubs. */ |
12947 | hti.info = info; | |
12948 | hti.output_bfd = abfd; | |
12949 | hti.error = FALSE; | |
12950 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
12951 | if (hti.error) | |
12952 | return FALSE; | |
12953 | ||
b49e97c9 TS |
12954 | /* Get a value for the GP register. */ |
12955 | if (elf_gp (abfd) == 0) | |
12956 | { | |
12957 | struct bfd_link_hash_entry *h; | |
12958 | ||
b34976b6 | 12959 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 12960 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
12961 | elf_gp (abfd) = (h->u.def.value |
12962 | + h->u.def.section->output_section->vma | |
12963 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
12964 | else if (htab->is_vxworks |
12965 | && (h = bfd_link_hash_lookup (info->hash, | |
12966 | "_GLOBAL_OFFSET_TABLE_", | |
12967 | FALSE, FALSE, TRUE)) | |
12968 | && h->type == bfd_link_hash_defined) | |
12969 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
12970 | + h->u.def.section->output_offset | |
12971 | + h->u.def.value); | |
1049f94e | 12972 | else if (info->relocatable) |
b49e97c9 TS |
12973 | { |
12974 | bfd_vma lo = MINUS_ONE; | |
12975 | ||
12976 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 12977 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
12978 | if (o->vma < lo |
12979 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
12980 | lo = o->vma; | |
12981 | ||
12982 | /* And calculate GP relative to that. */ | |
0a44bf69 | 12983 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
12984 | } |
12985 | else | |
12986 | { | |
12987 | /* If the relocate_section function needs to do a reloc | |
12988 | involving the GP value, it should make a reloc_dangerous | |
12989 | callback to warn that GP is not defined. */ | |
12990 | } | |
12991 | } | |
12992 | ||
12993 | /* Go through the sections and collect the .reginfo and .mdebug | |
12994 | information. */ | |
12995 | reginfo_sec = NULL; | |
12996 | mdebug_sec = NULL; | |
12997 | gptab_data_sec = NULL; | |
12998 | gptab_bss_sec = NULL; | |
9719ad41 | 12999 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
13000 | { |
13001 | if (strcmp (o->name, ".reginfo") == 0) | |
13002 | { | |
13003 | memset (®info, 0, sizeof reginfo); | |
13004 | ||
13005 | /* We have found the .reginfo section in the output file. | |
13006 | Look through all the link_orders comprising it and merge | |
13007 | the information together. */ | |
8423293d | 13008 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13009 | { |
13010 | asection *input_section; | |
13011 | bfd *input_bfd; | |
13012 | Elf32_External_RegInfo ext; | |
13013 | Elf32_RegInfo sub; | |
13014 | ||
13015 | if (p->type != bfd_indirect_link_order) | |
13016 | { | |
13017 | if (p->type == bfd_data_link_order) | |
13018 | continue; | |
13019 | abort (); | |
13020 | } | |
13021 | ||
13022 | input_section = p->u.indirect.section; | |
13023 | input_bfd = input_section->owner; | |
13024 | ||
b49e97c9 | 13025 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 13026 | &ext, 0, sizeof ext)) |
b34976b6 | 13027 | return FALSE; |
b49e97c9 TS |
13028 | |
13029 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
13030 | ||
13031 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
13032 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
13033 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
13034 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
13035 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
13036 | ||
13037 | /* ri_gp_value is set by the function | |
13038 | mips_elf32_section_processing when the section is | |
13039 | finally written out. */ | |
13040 | ||
13041 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13042 | elf_link_input_bfd ignores this section. */ | |
13043 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13044 | } | |
13045 | ||
13046 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 13047 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
13048 | |
13049 | /* Skip this section later on (I don't think this currently | |
13050 | matters, but someday it might). */ | |
8423293d | 13051 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13052 | |
13053 | reginfo_sec = o; | |
13054 | } | |
13055 | ||
13056 | if (strcmp (o->name, ".mdebug") == 0) | |
13057 | { | |
13058 | struct extsym_info einfo; | |
13059 | bfd_vma last; | |
13060 | ||
13061 | /* We have found the .mdebug section in the output file. | |
13062 | Look through all the link_orders comprising it and merge | |
13063 | the information together. */ | |
13064 | symhdr->magic = swap->sym_magic; | |
13065 | /* FIXME: What should the version stamp be? */ | |
13066 | symhdr->vstamp = 0; | |
13067 | symhdr->ilineMax = 0; | |
13068 | symhdr->cbLine = 0; | |
13069 | symhdr->idnMax = 0; | |
13070 | symhdr->ipdMax = 0; | |
13071 | symhdr->isymMax = 0; | |
13072 | symhdr->ioptMax = 0; | |
13073 | symhdr->iauxMax = 0; | |
13074 | symhdr->issMax = 0; | |
13075 | symhdr->issExtMax = 0; | |
13076 | symhdr->ifdMax = 0; | |
13077 | symhdr->crfd = 0; | |
13078 | symhdr->iextMax = 0; | |
13079 | ||
13080 | /* We accumulate the debugging information itself in the | |
13081 | debug_info structure. */ | |
13082 | debug.line = NULL; | |
13083 | debug.external_dnr = NULL; | |
13084 | debug.external_pdr = NULL; | |
13085 | debug.external_sym = NULL; | |
13086 | debug.external_opt = NULL; | |
13087 | debug.external_aux = NULL; | |
13088 | debug.ss = NULL; | |
13089 | debug.ssext = debug.ssext_end = NULL; | |
13090 | debug.external_fdr = NULL; | |
13091 | debug.external_rfd = NULL; | |
13092 | debug.external_ext = debug.external_ext_end = NULL; | |
13093 | ||
13094 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 13095 | if (mdebug_handle == NULL) |
b34976b6 | 13096 | return FALSE; |
b49e97c9 TS |
13097 | |
13098 | esym.jmptbl = 0; | |
13099 | esym.cobol_main = 0; | |
13100 | esym.weakext = 0; | |
13101 | esym.reserved = 0; | |
13102 | esym.ifd = ifdNil; | |
13103 | esym.asym.iss = issNil; | |
13104 | esym.asym.st = stLocal; | |
13105 | esym.asym.reserved = 0; | |
13106 | esym.asym.index = indexNil; | |
13107 | last = 0; | |
13108 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
13109 | { | |
13110 | esym.asym.sc = sc[i]; | |
13111 | s = bfd_get_section_by_name (abfd, secname[i]); | |
13112 | if (s != NULL) | |
13113 | { | |
13114 | esym.asym.value = s->vma; | |
eea6121a | 13115 | last = s->vma + s->size; |
b49e97c9 TS |
13116 | } |
13117 | else | |
13118 | esym.asym.value = last; | |
13119 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
13120 | secname[i], &esym)) | |
b34976b6 | 13121 | return FALSE; |
b49e97c9 TS |
13122 | } |
13123 | ||
8423293d | 13124 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13125 | { |
13126 | asection *input_section; | |
13127 | bfd *input_bfd; | |
13128 | const struct ecoff_debug_swap *input_swap; | |
13129 | struct ecoff_debug_info input_debug; | |
13130 | char *eraw_src; | |
13131 | char *eraw_end; | |
13132 | ||
13133 | if (p->type != bfd_indirect_link_order) | |
13134 | { | |
13135 | if (p->type == bfd_data_link_order) | |
13136 | continue; | |
13137 | abort (); | |
13138 | } | |
13139 | ||
13140 | input_section = p->u.indirect.section; | |
13141 | input_bfd = input_section->owner; | |
13142 | ||
d5eaccd7 | 13143 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
13144 | { |
13145 | /* I don't know what a non MIPS ELF bfd would be | |
13146 | doing with a .mdebug section, but I don't really | |
13147 | want to deal with it. */ | |
13148 | continue; | |
13149 | } | |
13150 | ||
13151 | input_swap = (get_elf_backend_data (input_bfd) | |
13152 | ->elf_backend_ecoff_debug_swap); | |
13153 | ||
eea6121a | 13154 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
13155 | |
13156 | /* The ECOFF linking code expects that we have already | |
13157 | read in the debugging information and set up an | |
13158 | ecoff_debug_info structure, so we do that now. */ | |
13159 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
13160 | &input_debug)) | |
b34976b6 | 13161 | return FALSE; |
b49e97c9 TS |
13162 | |
13163 | if (! (bfd_ecoff_debug_accumulate | |
13164 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
13165 | &input_debug, input_swap, info))) | |
b34976b6 | 13166 | return FALSE; |
b49e97c9 TS |
13167 | |
13168 | /* Loop through the external symbols. For each one with | |
13169 | interesting information, try to find the symbol in | |
13170 | the linker global hash table and save the information | |
13171 | for the output external symbols. */ | |
13172 | eraw_src = input_debug.external_ext; | |
13173 | eraw_end = (eraw_src | |
13174 | + (input_debug.symbolic_header.iextMax | |
13175 | * input_swap->external_ext_size)); | |
13176 | for (; | |
13177 | eraw_src < eraw_end; | |
13178 | eraw_src += input_swap->external_ext_size) | |
13179 | { | |
13180 | EXTR ext; | |
13181 | const char *name; | |
13182 | struct mips_elf_link_hash_entry *h; | |
13183 | ||
9719ad41 | 13184 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
13185 | if (ext.asym.sc == scNil |
13186 | || ext.asym.sc == scUndefined | |
13187 | || ext.asym.sc == scSUndefined) | |
13188 | continue; | |
13189 | ||
13190 | name = input_debug.ssext + ext.asym.iss; | |
13191 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 13192 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
13193 | if (h == NULL || h->esym.ifd != -2) |
13194 | continue; | |
13195 | ||
13196 | if (ext.ifd != -1) | |
13197 | { | |
13198 | BFD_ASSERT (ext.ifd | |
13199 | < input_debug.symbolic_header.ifdMax); | |
13200 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
13201 | } | |
13202 | ||
13203 | h->esym = ext; | |
13204 | } | |
13205 | ||
13206 | /* Free up the information we just read. */ | |
13207 | free (input_debug.line); | |
13208 | free (input_debug.external_dnr); | |
13209 | free (input_debug.external_pdr); | |
13210 | free (input_debug.external_sym); | |
13211 | free (input_debug.external_opt); | |
13212 | free (input_debug.external_aux); | |
13213 | free (input_debug.ss); | |
13214 | free (input_debug.ssext); | |
13215 | free (input_debug.external_fdr); | |
13216 | free (input_debug.external_rfd); | |
13217 | free (input_debug.external_ext); | |
13218 | ||
13219 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13220 | elf_link_input_bfd ignores this section. */ | |
13221 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13222 | } | |
13223 | ||
13224 | if (SGI_COMPAT (abfd) && info->shared) | |
13225 | { | |
13226 | /* Create .rtproc section. */ | |
87e0a731 | 13227 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
13228 | if (rtproc_sec == NULL) |
13229 | { | |
13230 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
13231 | | SEC_LINKER_CREATED | SEC_READONLY); | |
13232 | ||
87e0a731 AM |
13233 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
13234 | ".rtproc", | |
13235 | flags); | |
b49e97c9 | 13236 | if (rtproc_sec == NULL |
b49e97c9 | 13237 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 13238 | return FALSE; |
b49e97c9 TS |
13239 | } |
13240 | ||
13241 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
13242 | info, rtproc_sec, | |
13243 | &debug)) | |
b34976b6 | 13244 | return FALSE; |
b49e97c9 TS |
13245 | } |
13246 | ||
13247 | /* Build the external symbol information. */ | |
13248 | einfo.abfd = abfd; | |
13249 | einfo.info = info; | |
13250 | einfo.debug = &debug; | |
13251 | einfo.swap = swap; | |
b34976b6 | 13252 | einfo.failed = FALSE; |
b49e97c9 | 13253 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 13254 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 13255 | if (einfo.failed) |
b34976b6 | 13256 | return FALSE; |
b49e97c9 TS |
13257 | |
13258 | /* Set the size of the .mdebug section. */ | |
eea6121a | 13259 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
13260 | |
13261 | /* Skip this section later on (I don't think this currently | |
13262 | matters, but someday it might). */ | |
8423293d | 13263 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13264 | |
13265 | mdebug_sec = o; | |
13266 | } | |
13267 | ||
0112cd26 | 13268 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
13269 | { |
13270 | const char *subname; | |
13271 | unsigned int c; | |
13272 | Elf32_gptab *tab; | |
13273 | Elf32_External_gptab *ext_tab; | |
13274 | unsigned int j; | |
13275 | ||
13276 | /* The .gptab.sdata and .gptab.sbss sections hold | |
13277 | information describing how the small data area would | |
13278 | change depending upon the -G switch. These sections | |
13279 | not used in executables files. */ | |
1049f94e | 13280 | if (! info->relocatable) |
b49e97c9 | 13281 | { |
8423293d | 13282 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13283 | { |
13284 | asection *input_section; | |
13285 | ||
13286 | if (p->type != bfd_indirect_link_order) | |
13287 | { | |
13288 | if (p->type == bfd_data_link_order) | |
13289 | continue; | |
13290 | abort (); | |
13291 | } | |
13292 | ||
13293 | input_section = p->u.indirect.section; | |
13294 | ||
13295 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13296 | elf_link_input_bfd ignores this section. */ | |
13297 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13298 | } | |
13299 | ||
13300 | /* Skip this section later on (I don't think this | |
13301 | currently matters, but someday it might). */ | |
8423293d | 13302 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13303 | |
13304 | /* Really remove the section. */ | |
5daa8fe7 | 13305 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
13306 | --abfd->section_count; |
13307 | ||
13308 | continue; | |
13309 | } | |
13310 | ||
13311 | /* There is one gptab for initialized data, and one for | |
13312 | uninitialized data. */ | |
13313 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
13314 | gptab_data_sec = o; | |
13315 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
13316 | gptab_bss_sec = o; | |
13317 | else | |
13318 | { | |
13319 | (*_bfd_error_handler) | |
13320 | (_("%s: illegal section name `%s'"), | |
13321 | bfd_get_filename (abfd), o->name); | |
13322 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 13323 | return FALSE; |
b49e97c9 TS |
13324 | } |
13325 | ||
13326 | /* The linker script always combines .gptab.data and | |
13327 | .gptab.sdata into .gptab.sdata, and likewise for | |
13328 | .gptab.bss and .gptab.sbss. It is possible that there is | |
13329 | no .sdata or .sbss section in the output file, in which | |
13330 | case we must change the name of the output section. */ | |
13331 | subname = o->name + sizeof ".gptab" - 1; | |
13332 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
13333 | { | |
13334 | if (o == gptab_data_sec) | |
13335 | o->name = ".gptab.data"; | |
13336 | else | |
13337 | o->name = ".gptab.bss"; | |
13338 | subname = o->name + sizeof ".gptab" - 1; | |
13339 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
13340 | } | |
13341 | ||
13342 | /* Set up the first entry. */ | |
13343 | c = 1; | |
13344 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 13345 | tab = bfd_malloc (amt); |
b49e97c9 | 13346 | if (tab == NULL) |
b34976b6 | 13347 | return FALSE; |
b49e97c9 TS |
13348 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
13349 | tab[0].gt_header.gt_unused = 0; | |
13350 | ||
13351 | /* Combine the input sections. */ | |
8423293d | 13352 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13353 | { |
13354 | asection *input_section; | |
13355 | bfd *input_bfd; | |
13356 | bfd_size_type size; | |
13357 | unsigned long last; | |
13358 | bfd_size_type gpentry; | |
13359 | ||
13360 | if (p->type != bfd_indirect_link_order) | |
13361 | { | |
13362 | if (p->type == bfd_data_link_order) | |
13363 | continue; | |
13364 | abort (); | |
13365 | } | |
13366 | ||
13367 | input_section = p->u.indirect.section; | |
13368 | input_bfd = input_section->owner; | |
13369 | ||
13370 | /* Combine the gptab entries for this input section one | |
13371 | by one. We know that the input gptab entries are | |
13372 | sorted by ascending -G value. */ | |
eea6121a | 13373 | size = input_section->size; |
b49e97c9 TS |
13374 | last = 0; |
13375 | for (gpentry = sizeof (Elf32_External_gptab); | |
13376 | gpentry < size; | |
13377 | gpentry += sizeof (Elf32_External_gptab)) | |
13378 | { | |
13379 | Elf32_External_gptab ext_gptab; | |
13380 | Elf32_gptab int_gptab; | |
13381 | unsigned long val; | |
13382 | unsigned long add; | |
b34976b6 | 13383 | bfd_boolean exact; |
b49e97c9 TS |
13384 | unsigned int look; |
13385 | ||
13386 | if (! (bfd_get_section_contents | |
9719ad41 RS |
13387 | (input_bfd, input_section, &ext_gptab, gpentry, |
13388 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
13389 | { |
13390 | free (tab); | |
b34976b6 | 13391 | return FALSE; |
b49e97c9 TS |
13392 | } |
13393 | ||
13394 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
13395 | &int_gptab); | |
13396 | val = int_gptab.gt_entry.gt_g_value; | |
13397 | add = int_gptab.gt_entry.gt_bytes - last; | |
13398 | ||
b34976b6 | 13399 | exact = FALSE; |
b49e97c9 TS |
13400 | for (look = 1; look < c; look++) |
13401 | { | |
13402 | if (tab[look].gt_entry.gt_g_value >= val) | |
13403 | tab[look].gt_entry.gt_bytes += add; | |
13404 | ||
13405 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 13406 | exact = TRUE; |
b49e97c9 TS |
13407 | } |
13408 | ||
13409 | if (! exact) | |
13410 | { | |
13411 | Elf32_gptab *new_tab; | |
13412 | unsigned int max; | |
13413 | ||
13414 | /* We need a new table entry. */ | |
13415 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 13416 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
13417 | if (new_tab == NULL) |
13418 | { | |
13419 | free (tab); | |
b34976b6 | 13420 | return FALSE; |
b49e97c9 TS |
13421 | } |
13422 | tab = new_tab; | |
13423 | tab[c].gt_entry.gt_g_value = val; | |
13424 | tab[c].gt_entry.gt_bytes = add; | |
13425 | ||
13426 | /* Merge in the size for the next smallest -G | |
13427 | value, since that will be implied by this new | |
13428 | value. */ | |
13429 | max = 0; | |
13430 | for (look = 1; look < c; look++) | |
13431 | { | |
13432 | if (tab[look].gt_entry.gt_g_value < val | |
13433 | && (max == 0 | |
13434 | || (tab[look].gt_entry.gt_g_value | |
13435 | > tab[max].gt_entry.gt_g_value))) | |
13436 | max = look; | |
13437 | } | |
13438 | if (max != 0) | |
13439 | tab[c].gt_entry.gt_bytes += | |
13440 | tab[max].gt_entry.gt_bytes; | |
13441 | ||
13442 | ++c; | |
13443 | } | |
13444 | ||
13445 | last = int_gptab.gt_entry.gt_bytes; | |
13446 | } | |
13447 | ||
13448 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13449 | elf_link_input_bfd ignores this section. */ | |
13450 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13451 | } | |
13452 | ||
13453 | /* The table must be sorted by -G value. */ | |
13454 | if (c > 2) | |
13455 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
13456 | ||
13457 | /* Swap out the table. */ | |
13458 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 13459 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
13460 | if (ext_tab == NULL) |
13461 | { | |
13462 | free (tab); | |
b34976b6 | 13463 | return FALSE; |
b49e97c9 TS |
13464 | } |
13465 | ||
13466 | for (j = 0; j < c; j++) | |
13467 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
13468 | free (tab); | |
13469 | ||
eea6121a | 13470 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
13471 | o->contents = (bfd_byte *) ext_tab; |
13472 | ||
13473 | /* Skip this section later on (I don't think this currently | |
13474 | matters, but someday it might). */ | |
8423293d | 13475 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13476 | } |
13477 | } | |
13478 | ||
13479 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 13480 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 13481 | return FALSE; |
b49e97c9 TS |
13482 | |
13483 | /* Now write out the computed sections. */ | |
13484 | ||
9719ad41 | 13485 | if (reginfo_sec != NULL) |
b49e97c9 TS |
13486 | { |
13487 | Elf32_External_RegInfo ext; | |
13488 | ||
13489 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 13490 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 13491 | return FALSE; |
b49e97c9 TS |
13492 | } |
13493 | ||
9719ad41 | 13494 | if (mdebug_sec != NULL) |
b49e97c9 TS |
13495 | { |
13496 | BFD_ASSERT (abfd->output_has_begun); | |
13497 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
13498 | swap, info, | |
13499 | mdebug_sec->filepos)) | |
b34976b6 | 13500 | return FALSE; |
b49e97c9 TS |
13501 | |
13502 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
13503 | } | |
13504 | ||
9719ad41 | 13505 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
13506 | { |
13507 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
13508 | gptab_data_sec->contents, | |
eea6121a | 13509 | 0, gptab_data_sec->size)) |
b34976b6 | 13510 | return FALSE; |
b49e97c9 TS |
13511 | } |
13512 | ||
9719ad41 | 13513 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
13514 | { |
13515 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
13516 | gptab_bss_sec->contents, | |
eea6121a | 13517 | 0, gptab_bss_sec->size)) |
b34976b6 | 13518 | return FALSE; |
b49e97c9 TS |
13519 | } |
13520 | ||
13521 | if (SGI_COMPAT (abfd)) | |
13522 | { | |
13523 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
13524 | if (rtproc_sec != NULL) | |
13525 | { | |
13526 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
13527 | rtproc_sec->contents, | |
eea6121a | 13528 | 0, rtproc_sec->size)) |
b34976b6 | 13529 | return FALSE; |
b49e97c9 TS |
13530 | } |
13531 | } | |
13532 | ||
b34976b6 | 13533 | return TRUE; |
b49e97c9 TS |
13534 | } |
13535 | \f | |
64543e1a RS |
13536 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
13537 | ||
a253d456 NC |
13538 | struct mips_mach_extension |
13539 | { | |
64543e1a RS |
13540 | unsigned long extension, base; |
13541 | }; | |
13542 | ||
13543 | ||
13544 | /* An array describing how BFD machines relate to one another. The entries | |
13545 | are ordered topologically with MIPS I extensions listed last. */ | |
13546 | ||
a253d456 NC |
13547 | static const struct mips_mach_extension mips_mach_extensions[] = |
13548 | { | |
6f179bd0 | 13549 | /* MIPS64r2 extensions. */ |
432233b3 | 13550 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, |
dd6a37e7 | 13551 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, |
6f179bd0 AN |
13552 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, |
13553 | ||
64543e1a | 13554 | /* MIPS64 extensions. */ |
5f74bc13 | 13555 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a | 13556 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
52b6b6b9 | 13557 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, |
fd503541 | 13558 | { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64 }, |
64543e1a RS |
13559 | |
13560 | /* MIPS V extensions. */ | |
13561 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
13562 | ||
13563 | /* R10000 extensions. */ | |
13564 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
3aa3176b TS |
13565 | { bfd_mach_mips14000, bfd_mach_mips10000 }, |
13566 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
64543e1a RS |
13567 | |
13568 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
13569 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
13570 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
13571 | many libraries will just use the core ISA. Perhaps we could add | |
13572 | some sort of ASE flag if this ever proves a problem. */ | |
13573 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
13574 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
13575 | ||
13576 | /* MIPS IV extensions. */ | |
13577 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
13578 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
13579 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 13580 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 13581 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
13582 | |
13583 | /* VR4100 extensions. */ | |
13584 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
13585 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
13586 | ||
13587 | /* MIPS III extensions. */ | |
350cc38d MS |
13588 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
13589 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
13590 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
13591 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
13592 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
13593 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
13594 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
13595 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
13596 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
e407c74b | 13597 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
64543e1a RS |
13598 | |
13599 | /* MIPS32 extensions. */ | |
13600 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
13601 | ||
13602 | /* MIPS II extensions. */ | |
13603 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
13604 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
13605 | ||
13606 | /* MIPS I extensions. */ | |
13607 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
13608 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
13609 | }; | |
13610 | ||
13611 | ||
13612 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
13613 | ||
13614 | static bfd_boolean | |
9719ad41 | 13615 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
13616 | { |
13617 | size_t i; | |
13618 | ||
c5211a54 RS |
13619 | if (extension == base) |
13620 | return TRUE; | |
13621 | ||
13622 | if (base == bfd_mach_mipsisa32 | |
13623 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
13624 | return TRUE; | |
13625 | ||
13626 | if (base == bfd_mach_mipsisa32r2 | |
13627 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
13628 | return TRUE; | |
13629 | ||
13630 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 13631 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
13632 | { |
13633 | extension = mips_mach_extensions[i].base; | |
13634 | if (extension == base) | |
13635 | return TRUE; | |
13636 | } | |
64543e1a | 13637 | |
c5211a54 | 13638 | return FALSE; |
64543e1a RS |
13639 | } |
13640 | ||
13641 | ||
13642 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 13643 | |
b34976b6 | 13644 | static bfd_boolean |
9719ad41 | 13645 | mips_32bit_flags_p (flagword flags) |
00707a0e | 13646 | { |
64543e1a RS |
13647 | return ((flags & EF_MIPS_32BITMODE) != 0 |
13648 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
13649 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
13650 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
13651 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
13652 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
13653 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
13654 | } |
13655 | ||
64543e1a | 13656 | |
2cf19d5c JM |
13657 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
13658 | there are conflicting attributes. */ | |
13659 | static bfd_boolean | |
13660 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
13661 | { | |
13662 | obj_attribute *in_attr; | |
13663 | obj_attribute *out_attr; | |
6ae68ba3 MR |
13664 | bfd *abi_fp_bfd; |
13665 | ||
13666 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
13667 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
13668 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) | |
13669 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
2cf19d5c JM |
13670 | |
13671 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
13672 | { | |
13673 | /* This is the first object. Copy the attributes. */ | |
13674 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
13675 | ||
13676 | /* Use the Tag_null value to indicate the attributes have been | |
13677 | initialized. */ | |
13678 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
13679 | ||
13680 | return TRUE; | |
13681 | } | |
13682 | ||
13683 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
13684 | non-conflicting ones. */ | |
2cf19d5c JM |
13685 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
13686 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13687 | { | |
13688 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
13689 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
13690 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
6ae68ba3 | 13691 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) |
2cf19d5c JM |
13692 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) |
13693 | { | |
13694 | case 1: | |
13695 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13696 | { | |
13697 | case 2: | |
13698 | _bfd_error_handler | |
6ae68ba3 MR |
13699 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13700 | obfd, abi_fp_bfd, ibfd, "-mdouble-float", "-msingle-float"); | |
51a0dd31 | 13701 | break; |
2cf19d5c JM |
13702 | |
13703 | case 3: | |
13704 | _bfd_error_handler | |
6ae68ba3 MR |
13705 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13706 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13707 | break; |
13708 | ||
42554f6a TS |
13709 | case 4: |
13710 | _bfd_error_handler | |
6ae68ba3 MR |
13711 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13712 | obfd, abi_fp_bfd, ibfd, | |
13713 | "-mdouble-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13714 | break; |
13715 | ||
2cf19d5c | 13716 | default: |
6ae68ba3 MR |
13717 | _bfd_error_handler |
13718 | (_("Warning: %B uses %s (set by %B), " | |
13719 | "%B uses unknown floating point ABI %d"), | |
13720 | obfd, abi_fp_bfd, ibfd, | |
13721 | "-mdouble-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13722 | break; | |
2cf19d5c JM |
13723 | } |
13724 | break; | |
13725 | ||
13726 | case 2: | |
13727 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13728 | { | |
13729 | case 1: | |
13730 | _bfd_error_handler | |
6ae68ba3 MR |
13731 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13732 | obfd, abi_fp_bfd, ibfd, "-msingle-float", "-mdouble-float"); | |
51a0dd31 | 13733 | break; |
2cf19d5c JM |
13734 | |
13735 | case 3: | |
13736 | _bfd_error_handler | |
6ae68ba3 MR |
13737 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13738 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13739 | break; |
13740 | ||
42554f6a TS |
13741 | case 4: |
13742 | _bfd_error_handler | |
6ae68ba3 MR |
13743 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13744 | obfd, abi_fp_bfd, ibfd, | |
13745 | "-msingle-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13746 | break; |
13747 | ||
2cf19d5c | 13748 | default: |
6ae68ba3 MR |
13749 | _bfd_error_handler |
13750 | (_("Warning: %B uses %s (set by %B), " | |
13751 | "%B uses unknown floating point ABI %d"), | |
13752 | obfd, abi_fp_bfd, ibfd, | |
13753 | "-msingle-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13754 | break; | |
2cf19d5c JM |
13755 | } |
13756 | break; | |
13757 | ||
13758 | case 3: | |
13759 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13760 | { | |
13761 | case 1: | |
13762 | case 2: | |
42554f6a | 13763 | case 4: |
2cf19d5c | 13764 | _bfd_error_handler |
6ae68ba3 MR |
13765 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13766 | obfd, abi_fp_bfd, ibfd, "-msoft-float", "-mhard-float"); | |
2cf19d5c JM |
13767 | break; |
13768 | ||
13769 | default: | |
6ae68ba3 MR |
13770 | _bfd_error_handler |
13771 | (_("Warning: %B uses %s (set by %B), " | |
13772 | "%B uses unknown floating point ABI %d"), | |
13773 | obfd, abi_fp_bfd, ibfd, | |
13774 | "-msoft-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13775 | break; | |
2cf19d5c JM |
13776 | } |
13777 | break; | |
13778 | ||
42554f6a TS |
13779 | case 4: |
13780 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13781 | { | |
13782 | case 1: | |
13783 | _bfd_error_handler | |
6ae68ba3 MR |
13784 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13785 | obfd, abi_fp_bfd, ibfd, | |
13786 | "-mips32r2 -mfp64", "-mdouble-float"); | |
42554f6a TS |
13787 | break; |
13788 | ||
13789 | case 2: | |
13790 | _bfd_error_handler | |
6ae68ba3 MR |
13791 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13792 | obfd, abi_fp_bfd, ibfd, | |
13793 | "-mips32r2 -mfp64", "-msingle-float"); | |
42554f6a TS |
13794 | break; |
13795 | ||
13796 | case 3: | |
13797 | _bfd_error_handler | |
6ae68ba3 MR |
13798 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13799 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
42554f6a TS |
13800 | break; |
13801 | ||
13802 | default: | |
6ae68ba3 MR |
13803 | _bfd_error_handler |
13804 | (_("Warning: %B uses %s (set by %B), " | |
13805 | "%B uses unknown floating point ABI %d"), | |
13806 | obfd, abi_fp_bfd, ibfd, | |
13807 | "-mips32r2 -mfp64", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13808 | break; | |
42554f6a TS |
13809 | } |
13810 | break; | |
13811 | ||
2cf19d5c | 13812 | default: |
6ae68ba3 MR |
13813 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) |
13814 | { | |
13815 | case 1: | |
13816 | _bfd_error_handler | |
13817 | (_("Warning: %B uses unknown floating point ABI %d " | |
13818 | "(set by %B), %B uses %s"), | |
13819 | obfd, abi_fp_bfd, ibfd, | |
13820 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mdouble-float"); | |
13821 | break; | |
13822 | ||
13823 | case 2: | |
13824 | _bfd_error_handler | |
13825 | (_("Warning: %B uses unknown floating point ABI %d " | |
13826 | "(set by %B), %B uses %s"), | |
13827 | obfd, abi_fp_bfd, ibfd, | |
13828 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msingle-float"); | |
13829 | break; | |
13830 | ||
13831 | case 3: | |
13832 | _bfd_error_handler | |
13833 | (_("Warning: %B uses unknown floating point ABI %d " | |
13834 | "(set by %B), %B uses %s"), | |
13835 | obfd, abi_fp_bfd, ibfd, | |
13836 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msoft-float"); | |
13837 | break; | |
13838 | ||
13839 | case 4: | |
13840 | _bfd_error_handler | |
13841 | (_("Warning: %B uses unknown floating point ABI %d " | |
13842 | "(set by %B), %B uses %s"), | |
13843 | obfd, abi_fp_bfd, ibfd, | |
13844 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mips32r2 -mfp64"); | |
13845 | break; | |
13846 | ||
13847 | default: | |
13848 | _bfd_error_handler | |
13849 | (_("Warning: %B uses unknown floating point ABI %d " | |
13850 | "(set by %B), %B uses unknown floating point ABI %d"), | |
13851 | obfd, abi_fp_bfd, ibfd, | |
13852 | out_attr[Tag_GNU_MIPS_ABI_FP].i, | |
13853 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13854 | break; | |
13855 | } | |
13856 | break; | |
2cf19d5c JM |
13857 | } |
13858 | } | |
13859 | ||
13860 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
13861 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
13862 | ||
13863 | return TRUE; | |
13864 | } | |
13865 | ||
b49e97c9 TS |
13866 | /* Merge backend specific data from an object file to the output |
13867 | object file when linking. */ | |
13868 | ||
b34976b6 | 13869 | bfd_boolean |
9719ad41 | 13870 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
13871 | { |
13872 | flagword old_flags; | |
13873 | flagword new_flags; | |
b34976b6 AM |
13874 | bfd_boolean ok; |
13875 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
13876 | asection *sec; |
13877 | ||
58238693 | 13878 | /* Check if we have the same endianness. */ |
82e51918 | 13879 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
13880 | { |
13881 | (*_bfd_error_handler) | |
d003868e AM |
13882 | (_("%B: endianness incompatible with that of the selected emulation"), |
13883 | ibfd); | |
aa701218 AO |
13884 | return FALSE; |
13885 | } | |
b49e97c9 | 13886 | |
d5eaccd7 | 13887 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 13888 | return TRUE; |
b49e97c9 | 13889 | |
aa701218 AO |
13890 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
13891 | { | |
13892 | (*_bfd_error_handler) | |
d003868e AM |
13893 | (_("%B: ABI is incompatible with that of the selected emulation"), |
13894 | ibfd); | |
aa701218 AO |
13895 | return FALSE; |
13896 | } | |
13897 | ||
2cf19d5c JM |
13898 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
13899 | return FALSE; | |
13900 | ||
b49e97c9 TS |
13901 | new_flags = elf_elfheader (ibfd)->e_flags; |
13902 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
13903 | old_flags = elf_elfheader (obfd)->e_flags; | |
13904 | ||
13905 | if (! elf_flags_init (obfd)) | |
13906 | { | |
b34976b6 | 13907 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
13908 | elf_elfheader (obfd)->e_flags = new_flags; |
13909 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
13910 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
13911 | ||
13912 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 13913 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 13914 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 13915 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
13916 | { |
13917 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
13918 | bfd_get_mach (ibfd))) | |
b34976b6 | 13919 | return FALSE; |
b49e97c9 TS |
13920 | } |
13921 | ||
b34976b6 | 13922 | return TRUE; |
b49e97c9 TS |
13923 | } |
13924 | ||
13925 | /* Check flag compatibility. */ | |
13926 | ||
13927 | new_flags &= ~EF_MIPS_NOREORDER; | |
13928 | old_flags &= ~EF_MIPS_NOREORDER; | |
13929 | ||
f4416af6 AO |
13930 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
13931 | doesn't seem to matter. */ | |
13932 | new_flags &= ~EF_MIPS_XGOT; | |
13933 | old_flags &= ~EF_MIPS_XGOT; | |
13934 | ||
98a8deaf RS |
13935 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
13936 | just be able to ignore this. */ | |
13937 | new_flags &= ~EF_MIPS_UCODE; | |
13938 | old_flags &= ~EF_MIPS_UCODE; | |
13939 | ||
861fb55a DJ |
13940 | /* DSOs should only be linked with CPIC code. */ |
13941 | if ((ibfd->flags & DYNAMIC) != 0) | |
13942 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
0a44bf69 | 13943 | |
b49e97c9 | 13944 | if (new_flags == old_flags) |
b34976b6 | 13945 | return TRUE; |
b49e97c9 TS |
13946 | |
13947 | /* Check to see if the input BFD actually contains any sections. | |
13948 | If not, its flags may not have been initialised either, but it cannot | |
13949 | actually cause any incompatibility. */ | |
13950 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
13951 | { | |
13952 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
ed88c97e RS |
13953 | which are automatically generated by gas. Also ignore fake |
13954 | (s)common sections, since merely defining a common symbol does | |
13955 | not affect compatibility. */ | |
13956 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
13957 | && strcmp (sec->name, ".reginfo") | |
b49e97c9 | 13958 | && strcmp (sec->name, ".mdebug") |
eea6121a | 13959 | && (sec->size != 0 |
d13d89fa NS |
13960 | || (strcmp (sec->name, ".text") |
13961 | && strcmp (sec->name, ".data") | |
13962 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 13963 | { |
b34976b6 | 13964 | null_input_bfd = FALSE; |
b49e97c9 TS |
13965 | break; |
13966 | } | |
13967 | } | |
13968 | if (null_input_bfd) | |
b34976b6 | 13969 | return TRUE; |
b49e97c9 | 13970 | |
b34976b6 | 13971 | ok = TRUE; |
b49e97c9 | 13972 | |
143d77c5 EC |
13973 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
13974 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 13975 | { |
b49e97c9 | 13976 | (*_bfd_error_handler) |
861fb55a | 13977 | (_("%B: warning: linking abicalls files with non-abicalls files"), |
d003868e | 13978 | ibfd); |
143d77c5 | 13979 | ok = TRUE; |
b49e97c9 TS |
13980 | } |
13981 | ||
143d77c5 EC |
13982 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
13983 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
13984 | if (! (new_flags & EF_MIPS_PIC)) | |
13985 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
13986 | ||
13987 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
13988 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 13989 | |
64543e1a RS |
13990 | /* Compare the ISAs. */ |
13991 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 13992 | { |
64543e1a | 13993 | (*_bfd_error_handler) |
d003868e AM |
13994 | (_("%B: linking 32-bit code with 64-bit code"), |
13995 | ibfd); | |
64543e1a RS |
13996 | ok = FALSE; |
13997 | } | |
13998 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
13999 | { | |
14000 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
14001 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 14002 | { |
64543e1a RS |
14003 | /* Copy the architecture info from IBFD to OBFD. Also copy |
14004 | the 32-bit flag (if set) so that we continue to recognise | |
14005 | OBFD as a 32-bit binary. */ | |
14006 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
14007 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
14008 | elf_elfheader (obfd)->e_flags | |
14009 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14010 | ||
14011 | /* Copy across the ABI flags if OBFD doesn't use them | |
14012 | and if that was what caused us to treat IBFD as 32-bit. */ | |
14013 | if ((old_flags & EF_MIPS_ABI) == 0 | |
14014 | && mips_32bit_flags_p (new_flags) | |
14015 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
14016 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
14017 | } |
14018 | else | |
14019 | { | |
64543e1a | 14020 | /* The ISAs aren't compatible. */ |
b49e97c9 | 14021 | (*_bfd_error_handler) |
d003868e AM |
14022 | (_("%B: linking %s module with previous %s modules"), |
14023 | ibfd, | |
64543e1a RS |
14024 | bfd_printable_name (ibfd), |
14025 | bfd_printable_name (obfd)); | |
b34976b6 | 14026 | ok = FALSE; |
b49e97c9 | 14027 | } |
b49e97c9 TS |
14028 | } |
14029 | ||
64543e1a RS |
14030 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
14031 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14032 | ||
14033 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
14034 | does set EI_CLASS differently from any 32-bit ABI. */ |
14035 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
14036 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14037 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14038 | { | |
14039 | /* Only error if both are set (to different values). */ | |
14040 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
14041 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14042 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14043 | { | |
14044 | (*_bfd_error_handler) | |
d003868e AM |
14045 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
14046 | ibfd, | |
b49e97c9 TS |
14047 | elf_mips_abi_name (ibfd), |
14048 | elf_mips_abi_name (obfd)); | |
b34976b6 | 14049 | ok = FALSE; |
b49e97c9 TS |
14050 | } |
14051 | new_flags &= ~EF_MIPS_ABI; | |
14052 | old_flags &= ~EF_MIPS_ABI; | |
14053 | } | |
14054 | ||
df58fc94 RS |
14055 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together |
14056 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
fb39dac1 RS |
14057 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) |
14058 | { | |
df58fc94 RS |
14059 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; |
14060 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
14061 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
14062 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
14063 | int micro_mis = old_m16 && new_micro; | |
14064 | int m16_mis = old_micro && new_m16; | |
14065 | ||
14066 | if (m16_mis || micro_mis) | |
14067 | { | |
14068 | (*_bfd_error_handler) | |
14069 | (_("%B: ASE mismatch: linking %s module with previous %s modules"), | |
14070 | ibfd, | |
14071 | m16_mis ? "MIPS16" : "microMIPS", | |
14072 | m16_mis ? "microMIPS" : "MIPS16"); | |
14073 | ok = FALSE; | |
14074 | } | |
14075 | ||
fb39dac1 RS |
14076 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; |
14077 | ||
14078 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
14079 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
14080 | } | |
14081 | ||
b49e97c9 TS |
14082 | /* Warn about any other mismatches */ |
14083 | if (new_flags != old_flags) | |
14084 | { | |
14085 | (*_bfd_error_handler) | |
d003868e AM |
14086 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
14087 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 14088 | (unsigned long) old_flags); |
b34976b6 | 14089 | ok = FALSE; |
b49e97c9 TS |
14090 | } |
14091 | ||
14092 | if (! ok) | |
14093 | { | |
14094 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14095 | return FALSE; |
b49e97c9 TS |
14096 | } |
14097 | ||
b34976b6 | 14098 | return TRUE; |
b49e97c9 TS |
14099 | } |
14100 | ||
14101 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
14102 | ||
b34976b6 | 14103 | bfd_boolean |
9719ad41 | 14104 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
14105 | { |
14106 | BFD_ASSERT (!elf_flags_init (abfd) | |
14107 | || elf_elfheader (abfd)->e_flags == flags); | |
14108 | ||
14109 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
14110 | elf_flags_init (abfd) = TRUE; |
14111 | return TRUE; | |
b49e97c9 TS |
14112 | } |
14113 | ||
ad9563d6 CM |
14114 | char * |
14115 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
14116 | { | |
14117 | switch (dtag) | |
14118 | { | |
14119 | default: return ""; | |
14120 | case DT_MIPS_RLD_VERSION: | |
14121 | return "MIPS_RLD_VERSION"; | |
14122 | case DT_MIPS_TIME_STAMP: | |
14123 | return "MIPS_TIME_STAMP"; | |
14124 | case DT_MIPS_ICHECKSUM: | |
14125 | return "MIPS_ICHECKSUM"; | |
14126 | case DT_MIPS_IVERSION: | |
14127 | return "MIPS_IVERSION"; | |
14128 | case DT_MIPS_FLAGS: | |
14129 | return "MIPS_FLAGS"; | |
14130 | case DT_MIPS_BASE_ADDRESS: | |
14131 | return "MIPS_BASE_ADDRESS"; | |
14132 | case DT_MIPS_MSYM: | |
14133 | return "MIPS_MSYM"; | |
14134 | case DT_MIPS_CONFLICT: | |
14135 | return "MIPS_CONFLICT"; | |
14136 | case DT_MIPS_LIBLIST: | |
14137 | return "MIPS_LIBLIST"; | |
14138 | case DT_MIPS_LOCAL_GOTNO: | |
14139 | return "MIPS_LOCAL_GOTNO"; | |
14140 | case DT_MIPS_CONFLICTNO: | |
14141 | return "MIPS_CONFLICTNO"; | |
14142 | case DT_MIPS_LIBLISTNO: | |
14143 | return "MIPS_LIBLISTNO"; | |
14144 | case DT_MIPS_SYMTABNO: | |
14145 | return "MIPS_SYMTABNO"; | |
14146 | case DT_MIPS_UNREFEXTNO: | |
14147 | return "MIPS_UNREFEXTNO"; | |
14148 | case DT_MIPS_GOTSYM: | |
14149 | return "MIPS_GOTSYM"; | |
14150 | case DT_MIPS_HIPAGENO: | |
14151 | return "MIPS_HIPAGENO"; | |
14152 | case DT_MIPS_RLD_MAP: | |
14153 | return "MIPS_RLD_MAP"; | |
14154 | case DT_MIPS_DELTA_CLASS: | |
14155 | return "MIPS_DELTA_CLASS"; | |
14156 | case DT_MIPS_DELTA_CLASS_NO: | |
14157 | return "MIPS_DELTA_CLASS_NO"; | |
14158 | case DT_MIPS_DELTA_INSTANCE: | |
14159 | return "MIPS_DELTA_INSTANCE"; | |
14160 | case DT_MIPS_DELTA_INSTANCE_NO: | |
14161 | return "MIPS_DELTA_INSTANCE_NO"; | |
14162 | case DT_MIPS_DELTA_RELOC: | |
14163 | return "MIPS_DELTA_RELOC"; | |
14164 | case DT_MIPS_DELTA_RELOC_NO: | |
14165 | return "MIPS_DELTA_RELOC_NO"; | |
14166 | case DT_MIPS_DELTA_SYM: | |
14167 | return "MIPS_DELTA_SYM"; | |
14168 | case DT_MIPS_DELTA_SYM_NO: | |
14169 | return "MIPS_DELTA_SYM_NO"; | |
14170 | case DT_MIPS_DELTA_CLASSSYM: | |
14171 | return "MIPS_DELTA_CLASSSYM"; | |
14172 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
14173 | return "MIPS_DELTA_CLASSSYM_NO"; | |
14174 | case DT_MIPS_CXX_FLAGS: | |
14175 | return "MIPS_CXX_FLAGS"; | |
14176 | case DT_MIPS_PIXIE_INIT: | |
14177 | return "MIPS_PIXIE_INIT"; | |
14178 | case DT_MIPS_SYMBOL_LIB: | |
14179 | return "MIPS_SYMBOL_LIB"; | |
14180 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
14181 | return "MIPS_LOCALPAGE_GOTIDX"; | |
14182 | case DT_MIPS_LOCAL_GOTIDX: | |
14183 | return "MIPS_LOCAL_GOTIDX"; | |
14184 | case DT_MIPS_HIDDEN_GOTIDX: | |
14185 | return "MIPS_HIDDEN_GOTIDX"; | |
14186 | case DT_MIPS_PROTECTED_GOTIDX: | |
14187 | return "MIPS_PROTECTED_GOT_IDX"; | |
14188 | case DT_MIPS_OPTIONS: | |
14189 | return "MIPS_OPTIONS"; | |
14190 | case DT_MIPS_INTERFACE: | |
14191 | return "MIPS_INTERFACE"; | |
14192 | case DT_MIPS_DYNSTR_ALIGN: | |
14193 | return "DT_MIPS_DYNSTR_ALIGN"; | |
14194 | case DT_MIPS_INTERFACE_SIZE: | |
14195 | return "DT_MIPS_INTERFACE_SIZE"; | |
14196 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
14197 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
14198 | case DT_MIPS_PERF_SUFFIX: | |
14199 | return "DT_MIPS_PERF_SUFFIX"; | |
14200 | case DT_MIPS_COMPACT_SIZE: | |
14201 | return "DT_MIPS_COMPACT_SIZE"; | |
14202 | case DT_MIPS_GP_VALUE: | |
14203 | return "DT_MIPS_GP_VALUE"; | |
14204 | case DT_MIPS_AUX_DYNAMIC: | |
14205 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
14206 | case DT_MIPS_PLTGOT: |
14207 | return "DT_MIPS_PLTGOT"; | |
14208 | case DT_MIPS_RWPLT: | |
14209 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
14210 | } |
14211 | } | |
14212 | ||
b34976b6 | 14213 | bfd_boolean |
9719ad41 | 14214 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 14215 | { |
9719ad41 | 14216 | FILE *file = ptr; |
b49e97c9 TS |
14217 | |
14218 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
14219 | ||
14220 | /* Print normal ELF private data. */ | |
14221 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
14222 | ||
14223 | /* xgettext:c-format */ | |
14224 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
14225 | ||
14226 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
14227 | fprintf (file, _(" [abi=O32]")); | |
14228 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
14229 | fprintf (file, _(" [abi=O64]")); | |
14230 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
14231 | fprintf (file, _(" [abi=EABI32]")); | |
14232 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
14233 | fprintf (file, _(" [abi=EABI64]")); | |
14234 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
14235 | fprintf (file, _(" [abi unknown]")); | |
14236 | else if (ABI_N32_P (abfd)) | |
14237 | fprintf (file, _(" [abi=N32]")); | |
14238 | else if (ABI_64_P (abfd)) | |
14239 | fprintf (file, _(" [abi=64]")); | |
14240 | else | |
14241 | fprintf (file, _(" [no abi set]")); | |
14242 | ||
14243 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 14244 | fprintf (file, " [mips1]"); |
b49e97c9 | 14245 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 14246 | fprintf (file, " [mips2]"); |
b49e97c9 | 14247 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 14248 | fprintf (file, " [mips3]"); |
b49e97c9 | 14249 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 14250 | fprintf (file, " [mips4]"); |
b49e97c9 | 14251 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 14252 | fprintf (file, " [mips5]"); |
b49e97c9 | 14253 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 14254 | fprintf (file, " [mips32]"); |
b49e97c9 | 14255 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 14256 | fprintf (file, " [mips64]"); |
af7ee8bf | 14257 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 14258 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 14259 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 14260 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
14261 | else |
14262 | fprintf (file, _(" [unknown ISA]")); | |
14263 | ||
40d32fc6 | 14264 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 14265 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
14266 | |
14267 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 14268 | fprintf (file, " [mips16]"); |
40d32fc6 | 14269 | |
df58fc94 RS |
14270 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
14271 | fprintf (file, " [micromips]"); | |
14272 | ||
b49e97c9 | 14273 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 14274 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
14275 | else |
14276 | fprintf (file, _(" [not 32bitmode]")); | |
14277 | ||
c0e3f241 | 14278 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 14279 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
14280 | |
14281 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 14282 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
14283 | |
14284 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 14285 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
14286 | |
14287 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 14288 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
14289 | |
14290 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 14291 | fprintf (file, " [UCODE]"); |
c0e3f241 | 14292 | |
b49e97c9 TS |
14293 | fputc ('\n', file); |
14294 | ||
b34976b6 | 14295 | return TRUE; |
b49e97c9 | 14296 | } |
2f89ff8d | 14297 | |
b35d266b | 14298 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 14299 | { |
0112cd26 NC |
14300 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
14301 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14302 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
14303 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14304 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14305 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
14306 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 14307 | }; |
5e2b0d47 | 14308 | |
8992f0d7 TS |
14309 | /* Merge non visibility st_other attributes. Ensure that the |
14310 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
14311 | definiton of the symbol. */ | |
5e2b0d47 NC |
14312 | void |
14313 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
14314 | const Elf_Internal_Sym *isym, | |
14315 | bfd_boolean definition, | |
14316 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
14317 | { | |
8992f0d7 TS |
14318 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
14319 | { | |
14320 | unsigned char other; | |
14321 | ||
14322 | other = (definition ? isym->st_other : h->other); | |
14323 | other &= ~ELF_ST_VISIBILITY (-1); | |
14324 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
14325 | } | |
14326 | ||
14327 | if (!definition | |
5e2b0d47 NC |
14328 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
14329 | h->other |= STO_OPTIONAL; | |
14330 | } | |
12ac1cf5 NC |
14331 | |
14332 | /* Decide whether an undefined symbol is special and can be ignored. | |
14333 | This is the case for OPTIONAL symbols on IRIX. */ | |
14334 | bfd_boolean | |
14335 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
14336 | { | |
14337 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
14338 | } | |
e0764319 NC |
14339 | |
14340 | bfd_boolean | |
14341 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
14342 | { | |
14343 | return (sym->st_shndx == SHN_COMMON | |
14344 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
14345 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
14346 | } | |
861fb55a DJ |
14347 | |
14348 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
14349 | or (bfd_vma) -1 if it should not be included. */ | |
14350 | ||
14351 | bfd_vma | |
14352 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
14353 | const arelent *rel ATTRIBUTE_UNUSED) | |
14354 | { | |
14355 | return (plt->vma | |
14356 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
14357 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
14358 | } | |
14359 | ||
14360 | void | |
14361 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
14362 | { | |
14363 | struct mips_elf_link_hash_table *htab; | |
14364 | Elf_Internal_Ehdr *i_ehdrp; | |
14365 | ||
14366 | i_ehdrp = elf_elfheader (abfd); | |
14367 | if (link_info) | |
14368 | { | |
14369 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 NC |
14370 | BFD_ASSERT (htab != NULL); |
14371 | ||
861fb55a DJ |
14372 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
14373 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
14374 | } | |
14375 | } |