Commit | Line | Data |
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b49e97c9 | 1 | /* MIPS-specific support for ELF |
64543e1a | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
6f179bd0 | 3 | 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
b49e97c9 TS |
4 | |
5 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
6 | <ian@cygnus.com>. | |
7 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. | |
8 | <mark@codesourcery.com> | |
9 | Traditional MIPS targets support added by Koundinya.K, Dansk Data | |
10 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
11 | ||
ae9a127f | 12 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 13 | |
ae9a127f NC |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 16 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 17 | (at your option) any later version. |
b49e97c9 | 18 | |
ae9a127f NC |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
b49e97c9 | 23 | |
ae9a127f NC |
24 | You should have received a copy of the GNU General Public License |
25 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
26 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
27 | MA 02110-1301, USA. */ | |
28 | ||
b49e97c9 TS |
29 | |
30 | /* This file handles functionality common to the different MIPS ABI's. */ | |
31 | ||
b49e97c9 | 32 | #include "sysdep.h" |
3db64b00 | 33 | #include "bfd.h" |
b49e97c9 | 34 | #include "libbfd.h" |
64543e1a | 35 | #include "libiberty.h" |
b49e97c9 TS |
36 | #include "elf-bfd.h" |
37 | #include "elfxx-mips.h" | |
38 | #include "elf/mips.h" | |
0a44bf69 | 39 | #include "elf-vxworks.h" |
b49e97c9 TS |
40 | |
41 | /* Get the ECOFF swapping routines. */ | |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/mips.h" | |
46 | ||
b15e6682 AO |
47 | #include "hashtab.h" |
48 | ||
ead49a57 RS |
49 | /* This structure is used to hold information about one GOT entry. |
50 | There are three types of entry: | |
51 | ||
52 | (1) absolute addresses | |
53 | (abfd == NULL) | |
54 | (2) SYMBOL + OFFSET addresses, where SYMBOL is local to an input bfd | |
55 | (abfd != NULL, symndx >= 0) | |
56 | (3) global and forced-local symbols | |
57 | (abfd != NULL, symndx == -1) | |
58 | ||
59 | Type (3) entries are treated differently for different types of GOT. | |
60 | In the "master" GOT -- i.e. the one that describes every GOT | |
61 | reference needed in the link -- the mips_got_entry is keyed on both | |
62 | the symbol and the input bfd that references it. If it turns out | |
63 | that we need multiple GOTs, we can then use this information to | |
64 | create separate GOTs for each input bfd. | |
65 | ||
66 | However, we want each of these separate GOTs to have at most one | |
67 | entry for a given symbol, so their type (3) entries are keyed only | |
68 | on the symbol. The input bfd given by the "abfd" field is somewhat | |
69 | arbitrary in this case. | |
70 | ||
71 | This means that when there are multiple GOTs, each GOT has a unique | |
72 | mips_got_entry for every symbol within it. We can therefore use the | |
73 | mips_got_entry fields (tls_type and gotidx) to track the symbol's | |
74 | GOT index. | |
75 | ||
76 | However, if it turns out that we need only a single GOT, we continue | |
77 | to use the master GOT to describe it. There may therefore be several | |
78 | mips_got_entries for the same symbol, each with a different input bfd. | |
79 | We want to make sure that each symbol gets a unique GOT entry, so when | |
80 | there's a single GOT, we use the symbol's hash entry, not the | |
81 | mips_got_entry fields, to track a symbol's GOT index. */ | |
b15e6682 AO |
82 | struct mips_got_entry |
83 | { | |
84 | /* The input bfd in which the symbol is defined. */ | |
85 | bfd *abfd; | |
f4416af6 AO |
86 | /* The index of the symbol, as stored in the relocation r_info, if |
87 | we have a local symbol; -1 otherwise. */ | |
88 | long symndx; | |
89 | union | |
90 | { | |
91 | /* If abfd == NULL, an address that must be stored in the got. */ | |
92 | bfd_vma address; | |
93 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
94 | that should be added to the symbol value. */ | |
95 | bfd_vma addend; | |
96 | /* If abfd != NULL && symndx == -1, the hash table entry | |
97 | corresponding to a global symbol in the got (or, local, if | |
98 | h->forced_local). */ | |
99 | struct mips_elf_link_hash_entry *h; | |
100 | } d; | |
0f20cc35 DJ |
101 | |
102 | /* The TLS types included in this GOT entry (specifically, GD and | |
103 | IE). The GD and IE flags can be added as we encounter new | |
104 | relocations. LDM can also be set; it will always be alone, not | |
105 | combined with any GD or IE flags. An LDM GOT entry will be | |
106 | a local symbol entry with r_symndx == 0. */ | |
107 | unsigned char tls_type; | |
108 | ||
b15e6682 | 109 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
110 | corresponding to this symbol+addend. If it's a global symbol |
111 | whose offset is yet to be decided, it's going to be -1. */ | |
112 | long gotidx; | |
b15e6682 AO |
113 | }; |
114 | ||
c224138d RS |
115 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
116 | The structures form a non-overlapping list that is sorted by increasing | |
117 | MIN_ADDEND. */ | |
118 | struct mips_got_page_range | |
119 | { | |
120 | struct mips_got_page_range *next; | |
121 | bfd_signed_vma min_addend; | |
122 | bfd_signed_vma max_addend; | |
123 | }; | |
124 | ||
125 | /* This structure describes the range of addends that are applied to page | |
126 | relocations against a given symbol. */ | |
127 | struct mips_got_page_entry | |
128 | { | |
129 | /* The input bfd in which the symbol is defined. */ | |
130 | bfd *abfd; | |
131 | /* The index of the symbol, as stored in the relocation r_info. */ | |
132 | long symndx; | |
133 | /* The ranges for this page entry. */ | |
134 | struct mips_got_page_range *ranges; | |
135 | /* The maximum number of page entries needed for RANGES. */ | |
136 | bfd_vma num_pages; | |
137 | }; | |
138 | ||
f0abc2a1 | 139 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
140 | |
141 | struct mips_got_info | |
142 | { | |
143 | /* The global symbol in the GOT with the lowest index in the dynamic | |
144 | symbol table. */ | |
145 | struct elf_link_hash_entry *global_gotsym; | |
146 | /* The number of global .got entries. */ | |
147 | unsigned int global_gotno; | |
23cc69b6 RS |
148 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
149 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
150 | /* The number of .got slots used for TLS. */ |
151 | unsigned int tls_gotno; | |
152 | /* The first unused TLS .got entry. Used only during | |
153 | mips_elf_initialize_tls_index. */ | |
154 | unsigned int tls_assigned_gotno; | |
c224138d | 155 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 156 | unsigned int local_gotno; |
c224138d RS |
157 | /* The maximum number of page entries needed. */ |
158 | unsigned int page_gotno; | |
b49e97c9 TS |
159 | /* The number of local .got entries we have used. */ |
160 | unsigned int assigned_gotno; | |
b15e6682 AO |
161 | /* A hash table holding members of the got. */ |
162 | struct htab *got_entries; | |
c224138d RS |
163 | /* A hash table of mips_got_page_entry structures. */ |
164 | struct htab *got_page_entries; | |
f4416af6 AO |
165 | /* A hash table mapping input bfds to other mips_got_info. NULL |
166 | unless multi-got was necessary. */ | |
167 | struct htab *bfd2got; | |
168 | /* In multi-got links, a pointer to the next got (err, rather, most | |
169 | of the time, it points to the previous got). */ | |
170 | struct mips_got_info *next; | |
0f20cc35 DJ |
171 | /* This is the GOT index of the TLS LDM entry for the GOT, MINUS_ONE |
172 | for none, or MINUS_TWO for not yet assigned. This is needed | |
173 | because a single-GOT link may have multiple hash table entries | |
174 | for the LDM. It does not get initialized in multi-GOT mode. */ | |
175 | bfd_vma tls_ldm_offset; | |
f4416af6 AO |
176 | }; |
177 | ||
178 | /* Map an input bfd to a got in a multi-got link. */ | |
179 | ||
180 | struct mips_elf_bfd2got_hash { | |
181 | bfd *bfd; | |
182 | struct mips_got_info *g; | |
183 | }; | |
184 | ||
185 | /* Structure passed when traversing the bfd2got hash table, used to | |
186 | create and merge bfd's gots. */ | |
187 | ||
188 | struct mips_elf_got_per_bfd_arg | |
189 | { | |
190 | /* A hashtable that maps bfds to gots. */ | |
191 | htab_t bfd2got; | |
192 | /* The output bfd. */ | |
193 | bfd *obfd; | |
194 | /* The link information. */ | |
195 | struct bfd_link_info *info; | |
196 | /* A pointer to the primary got, i.e., the one that's going to get | |
197 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
198 | DT_MIPS_GOTSYM. */ | |
199 | struct mips_got_info *primary; | |
200 | /* A non-primary got we're trying to merge with other input bfd's | |
201 | gots. */ | |
202 | struct mips_got_info *current; | |
203 | /* The maximum number of got entries that can be addressed with a | |
204 | 16-bit offset. */ | |
205 | unsigned int max_count; | |
c224138d RS |
206 | /* The maximum number of page entries needed by each got. */ |
207 | unsigned int max_pages; | |
0f20cc35 DJ |
208 | /* The total number of global entries which will live in the |
209 | primary got and be automatically relocated. This includes | |
210 | those not referenced by the primary GOT but included in | |
211 | the "master" GOT. */ | |
212 | unsigned int global_count; | |
f4416af6 AO |
213 | }; |
214 | ||
215 | /* Another structure used to pass arguments for got entries traversal. */ | |
216 | ||
217 | struct mips_elf_set_global_got_offset_arg | |
218 | { | |
219 | struct mips_got_info *g; | |
220 | int value; | |
221 | unsigned int needed_relocs; | |
222 | struct bfd_link_info *info; | |
b49e97c9 TS |
223 | }; |
224 | ||
0f20cc35 DJ |
225 | /* A structure used to count TLS relocations or GOT entries, for GOT |
226 | entry or ELF symbol table traversal. */ | |
227 | ||
228 | struct mips_elf_count_tls_arg | |
229 | { | |
230 | struct bfd_link_info *info; | |
231 | unsigned int needed; | |
232 | }; | |
233 | ||
f0abc2a1 AM |
234 | struct _mips_elf_section_data |
235 | { | |
236 | struct bfd_elf_section_data elf; | |
237 | union | |
238 | { | |
f0abc2a1 AM |
239 | bfd_byte *tdata; |
240 | } u; | |
241 | }; | |
242 | ||
243 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 244 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 245 | |
d5eaccd7 RS |
246 | #define is_mips_elf(bfd) \ |
247 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
248 | && elf_tdata (bfd) != NULL \ | |
249 | && elf_object_id (bfd) == MIPS_ELF_TDATA) | |
250 | ||
634835ae RS |
251 | /* The ABI says that every symbol used by dynamic relocations must have |
252 | a global GOT entry. Among other things, this provides the dynamic | |
253 | linker with a free, directly-indexed cache. The GOT can therefore | |
254 | contain symbols that are not referenced by GOT relocations themselves | |
255 | (in other words, it may have symbols that are not referenced by things | |
256 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
257 | ||
258 | GOT relocations are less likely to overflow if we put the associated | |
259 | GOT entries towards the beginning. We therefore divide the global | |
260 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
261 | the first area can be used for both dynamic relocations and GP-relative | |
262 | accesses, while those in the "reloc-only" area are for dynamic | |
263 | relocations only. | |
264 | ||
265 | These GGA_* ("Global GOT Area") values are organised so that lower | |
266 | values are more general than higher values. Also, non-GGA_NONE | |
267 | values are ordered by the position of the area in the GOT. */ | |
268 | #define GGA_NORMAL 0 | |
269 | #define GGA_RELOC_ONLY 1 | |
270 | #define GGA_NONE 2 | |
271 | ||
861fb55a DJ |
272 | /* Information about a non-PIC interface to a PIC function. There are |
273 | two ways of creating these interfaces. The first is to add: | |
274 | ||
275 | lui $25,%hi(func) | |
276 | addiu $25,$25,%lo(func) | |
277 | ||
278 | immediately before a PIC function "func". The second is to add: | |
279 | ||
280 | lui $25,%hi(func) | |
281 | j func | |
282 | addiu $25,$25,%lo(func) | |
283 | ||
284 | to a separate trampoline section. | |
285 | ||
286 | Stubs of the first kind go in a new section immediately before the | |
287 | target function. Stubs of the second kind go in a single section | |
288 | pointed to by the hash table's "strampoline" field. */ | |
289 | struct mips_elf_la25_stub { | |
290 | /* The generated section that contains this stub. */ | |
291 | asection *stub_section; | |
292 | ||
293 | /* The offset of the stub from the start of STUB_SECTION. */ | |
294 | bfd_vma offset; | |
295 | ||
296 | /* One symbol for the original function. Its location is available | |
297 | in H->root.root.u.def. */ | |
298 | struct mips_elf_link_hash_entry *h; | |
299 | }; | |
300 | ||
301 | /* Macros for populating a mips_elf_la25_stub. */ | |
302 | ||
303 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
304 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
305 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
306 | ||
b49e97c9 TS |
307 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
308 | the dynamic symbols. */ | |
309 | ||
310 | struct mips_elf_hash_sort_data | |
311 | { | |
312 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
313 | index. */ | |
314 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
315 | /* The least dynamic symbol table index corresponding to a non-TLS |
316 | symbol with a GOT entry. */ | |
b49e97c9 | 317 | long min_got_dynindx; |
f4416af6 AO |
318 | /* The greatest dynamic symbol table index corresponding to a symbol |
319 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 320 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 321 | long max_unref_got_dynindx; |
b49e97c9 TS |
322 | /* The greatest dynamic symbol table index not corresponding to a |
323 | symbol without a GOT entry. */ | |
324 | long max_non_got_dynindx; | |
325 | }; | |
326 | ||
327 | /* The MIPS ELF linker needs additional information for each symbol in | |
328 | the global hash table. */ | |
329 | ||
330 | struct mips_elf_link_hash_entry | |
331 | { | |
332 | struct elf_link_hash_entry root; | |
333 | ||
334 | /* External symbol information. */ | |
335 | EXTR esym; | |
336 | ||
861fb55a DJ |
337 | /* The la25 stub we have created for ths symbol, if any. */ |
338 | struct mips_elf_la25_stub *la25_stub; | |
339 | ||
b49e97c9 TS |
340 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
341 | this symbol. */ | |
342 | unsigned int possibly_dynamic_relocs; | |
343 | ||
b49e97c9 TS |
344 | /* If there is a stub that 32 bit functions should use to call this |
345 | 16 bit function, this points to the section containing the stub. */ | |
346 | asection *fn_stub; | |
347 | ||
b49e97c9 TS |
348 | /* If there is a stub that 16 bit functions should use to call this |
349 | 32 bit function, this points to the section containing the stub. */ | |
350 | asection *call_stub; | |
351 | ||
352 | /* This is like the call_stub field, but it is used if the function | |
353 | being called returns a floating point value. */ | |
354 | asection *call_fp_stub; | |
7c5fcef7 | 355 | |
0f20cc35 DJ |
356 | #define GOT_NORMAL 0 |
357 | #define GOT_TLS_GD 1 | |
358 | #define GOT_TLS_LDM 2 | |
359 | #define GOT_TLS_IE 4 | |
360 | #define GOT_TLS_OFFSET_DONE 0x40 | |
361 | #define GOT_TLS_DONE 0x80 | |
362 | unsigned char tls_type; | |
71782a75 | 363 | |
0f20cc35 DJ |
364 | /* This is only used in single-GOT mode; in multi-GOT mode there |
365 | is one mips_got_entry per GOT entry, so the offset is stored | |
366 | there. In single-GOT mode there may be many mips_got_entry | |
367 | structures all referring to the same GOT slot. It might be | |
368 | possible to use root.got.offset instead, but that field is | |
369 | overloaded already. */ | |
370 | bfd_vma tls_got_offset; | |
71782a75 | 371 | |
634835ae RS |
372 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
373 | unsigned int global_got_area : 2; | |
374 | ||
71782a75 RS |
375 | /* True if one of the relocations described by possibly_dynamic_relocs |
376 | is against a readonly section. */ | |
377 | unsigned int readonly_reloc : 1; | |
378 | ||
861fb55a DJ |
379 | /* True if there is a relocation against this symbol that must be |
380 | resolved by the static linker (in other words, if the relocation | |
381 | cannot possibly be made dynamic). */ | |
382 | unsigned int has_static_relocs : 1; | |
383 | ||
71782a75 RS |
384 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
385 | This is set, for example, if there are relocations related to | |
386 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
387 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
388 | unsigned int no_fn_stub : 1; | |
389 | ||
390 | /* Whether we need the fn_stub; this is true if this symbol appears | |
391 | in any relocs other than a 16 bit call. */ | |
392 | unsigned int need_fn_stub : 1; | |
393 | ||
861fb55a DJ |
394 | /* True if this symbol is referenced by branch relocations from |
395 | any non-PIC input file. This is used to determine whether an | |
396 | la25 stub is required. */ | |
397 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
398 | |
399 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
400 | (as opposed to a PLT entry)? */ | |
401 | unsigned int needs_lazy_stub : 1; | |
b49e97c9 TS |
402 | }; |
403 | ||
404 | /* MIPS ELF linker hash table. */ | |
405 | ||
406 | struct mips_elf_link_hash_table | |
407 | { | |
408 | struct elf_link_hash_table root; | |
409 | #if 0 | |
410 | /* We no longer use this. */ | |
411 | /* String section indices for the dynamic section symbols. */ | |
412 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
413 | #endif | |
861fb55a | 414 | |
b49e97c9 TS |
415 | /* The number of .rtproc entries. */ |
416 | bfd_size_type procedure_count; | |
861fb55a | 417 | |
b49e97c9 TS |
418 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
419 | bfd_size_type compact_rel_size; | |
861fb55a | 420 | |
b49e97c9 | 421 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic |
8dc1a139 | 422 | entry is set to the address of __rld_obj_head as in IRIX5. */ |
b34976b6 | 423 | bfd_boolean use_rld_obj_head; |
861fb55a | 424 | |
b49e97c9 TS |
425 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ |
426 | bfd_vma rld_value; | |
861fb55a | 427 | |
b49e97c9 | 428 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 429 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
430 | |
431 | /* True if we can generate copy relocs and PLTs. */ | |
432 | bfd_boolean use_plts_and_copy_relocs; | |
433 | ||
0a44bf69 RS |
434 | /* True if we're generating code for VxWorks. */ |
435 | bfd_boolean is_vxworks; | |
861fb55a | 436 | |
0e53d9da AN |
437 | /* True if we already reported the small-data section overflow. */ |
438 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 439 | |
0a44bf69 RS |
440 | /* Shortcuts to some dynamic sections, or NULL if they are not |
441 | being used. */ | |
442 | asection *srelbss; | |
443 | asection *sdynbss; | |
444 | asection *srelplt; | |
445 | asection *srelplt2; | |
446 | asection *sgotplt; | |
447 | asection *splt; | |
4e41d0d7 | 448 | asection *sstubs; |
a8028dd0 | 449 | asection *sgot; |
861fb55a | 450 | |
a8028dd0 RS |
451 | /* The master GOT information. */ |
452 | struct mips_got_info *got_info; | |
861fb55a DJ |
453 | |
454 | /* The size of the PLT header in bytes. */ | |
0a44bf69 | 455 | bfd_vma plt_header_size; |
861fb55a DJ |
456 | |
457 | /* The size of a PLT entry in bytes. */ | |
0a44bf69 | 458 | bfd_vma plt_entry_size; |
861fb55a | 459 | |
33bb52fb RS |
460 | /* The number of functions that need a lazy-binding stub. */ |
461 | bfd_vma lazy_stub_count; | |
861fb55a | 462 | |
5108fc1b RS |
463 | /* The size of a function stub entry in bytes. */ |
464 | bfd_vma function_stub_size; | |
861fb55a DJ |
465 | |
466 | /* The number of reserved entries at the beginning of the GOT. */ | |
467 | unsigned int reserved_gotno; | |
468 | ||
469 | /* The section used for mips_elf_la25_stub trampolines. | |
470 | See the comment above that structure for details. */ | |
471 | asection *strampoline; | |
472 | ||
473 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
474 | pairs. */ | |
475 | htab_t la25_stubs; | |
476 | ||
477 | /* A function FN (NAME, IS, OS) that creates a new input section | |
478 | called NAME and links it to output section OS. If IS is nonnull, | |
479 | the new section should go immediately before it, otherwise it | |
480 | should go at the (current) beginning of OS. | |
481 | ||
482 | The function returns the new section on success, otherwise it | |
483 | returns null. */ | |
484 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
485 | }; | |
486 | ||
487 | /* A structure used to communicate with htab_traverse callbacks. */ | |
488 | struct mips_htab_traverse_info { | |
489 | /* The usual link-wide information. */ | |
490 | struct bfd_link_info *info; | |
491 | bfd *output_bfd; | |
492 | ||
493 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
494 | bfd_boolean error; | |
b49e97c9 TS |
495 | }; |
496 | ||
0f20cc35 DJ |
497 | #define TLS_RELOC_P(r_type) \ |
498 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
499 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
500 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
501 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
502 | || r_type == R_MIPS_TLS_GD \ | |
503 | || r_type == R_MIPS_TLS_LDM \ | |
504 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
505 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
506 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
507 | || r_type == R_MIPS_TLS_TPREL32 \ | |
508 | || r_type == R_MIPS_TLS_TPREL64 \ | |
509 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
510 | || r_type == R_MIPS_TLS_TPREL_LO16) | |
511 | ||
b49e97c9 TS |
512 | /* Structure used to pass information to mips_elf_output_extsym. */ |
513 | ||
514 | struct extsym_info | |
515 | { | |
9e4aeb93 RS |
516 | bfd *abfd; |
517 | struct bfd_link_info *info; | |
b49e97c9 TS |
518 | struct ecoff_debug_info *debug; |
519 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 520 | bfd_boolean failed; |
b49e97c9 TS |
521 | }; |
522 | ||
8dc1a139 | 523 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
524 | |
525 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
526 | { | |
527 | "_procedure_table", | |
528 | "_procedure_string_table", | |
529 | "_procedure_table_size", | |
530 | NULL | |
531 | }; | |
532 | ||
533 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 534 | IRIX5. */ |
b49e97c9 TS |
535 | |
536 | typedef struct | |
537 | { | |
538 | unsigned long id1; /* Always one? */ | |
539 | unsigned long num; /* Number of compact relocation entries. */ | |
540 | unsigned long id2; /* Always two? */ | |
541 | unsigned long offset; /* The file offset of the first relocation. */ | |
542 | unsigned long reserved0; /* Zero? */ | |
543 | unsigned long reserved1; /* Zero? */ | |
544 | } Elf32_compact_rel; | |
545 | ||
546 | typedef struct | |
547 | { | |
548 | bfd_byte id1[4]; | |
549 | bfd_byte num[4]; | |
550 | bfd_byte id2[4]; | |
551 | bfd_byte offset[4]; | |
552 | bfd_byte reserved0[4]; | |
553 | bfd_byte reserved1[4]; | |
554 | } Elf32_External_compact_rel; | |
555 | ||
556 | typedef struct | |
557 | { | |
558 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
559 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
560 | unsigned int dist2to : 8; | |
561 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
562 | unsigned long konst; /* KONST field. See below. */ | |
563 | unsigned long vaddr; /* VADDR to be relocated. */ | |
564 | } Elf32_crinfo; | |
565 | ||
566 | typedef struct | |
567 | { | |
568 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
569 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
570 | unsigned int dist2to : 8; | |
571 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
572 | unsigned long konst; /* KONST field. See below. */ | |
573 | } Elf32_crinfo2; | |
574 | ||
575 | typedef struct | |
576 | { | |
577 | bfd_byte info[4]; | |
578 | bfd_byte konst[4]; | |
579 | bfd_byte vaddr[4]; | |
580 | } Elf32_External_crinfo; | |
581 | ||
582 | typedef struct | |
583 | { | |
584 | bfd_byte info[4]; | |
585 | bfd_byte konst[4]; | |
586 | } Elf32_External_crinfo2; | |
587 | ||
588 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
589 | ||
590 | #define CRINFO_CTYPE (0x1) | |
591 | #define CRINFO_CTYPE_SH (31) | |
592 | #define CRINFO_RTYPE (0xf) | |
593 | #define CRINFO_RTYPE_SH (27) | |
594 | #define CRINFO_DIST2TO (0xff) | |
595 | #define CRINFO_DIST2TO_SH (19) | |
596 | #define CRINFO_RELVADDR (0x7ffff) | |
597 | #define CRINFO_RELVADDR_SH (0) | |
598 | ||
599 | /* A compact relocation info has long (3 words) or short (2 words) | |
600 | formats. A short format doesn't have VADDR field and relvaddr | |
601 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
602 | #define CRF_MIPS_LONG 1 | |
603 | #define CRF_MIPS_SHORT 0 | |
604 | ||
605 | /* There are 4 types of compact relocation at least. The value KONST | |
606 | has different meaning for each type: | |
607 | ||
608 | (type) (konst) | |
609 | CT_MIPS_REL32 Address in data | |
610 | CT_MIPS_WORD Address in word (XXX) | |
611 | CT_MIPS_GPHI_LO GP - vaddr | |
612 | CT_MIPS_JMPAD Address to jump | |
613 | */ | |
614 | ||
615 | #define CRT_MIPS_REL32 0xa | |
616 | #define CRT_MIPS_WORD 0xb | |
617 | #define CRT_MIPS_GPHI_LO 0xc | |
618 | #define CRT_MIPS_JMPAD 0xd | |
619 | ||
620 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
621 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
622 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
623 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
624 | \f | |
625 | /* The structure of the runtime procedure descriptor created by the | |
626 | loader for use by the static exception system. */ | |
627 | ||
628 | typedef struct runtime_pdr { | |
ae9a127f NC |
629 | bfd_vma adr; /* Memory address of start of procedure. */ |
630 | long regmask; /* Save register mask. */ | |
631 | long regoffset; /* Save register offset. */ | |
632 | long fregmask; /* Save floating point register mask. */ | |
633 | long fregoffset; /* Save floating point register offset. */ | |
634 | long frameoffset; /* Frame size. */ | |
635 | short framereg; /* Frame pointer register. */ | |
636 | short pcreg; /* Offset or reg of return pc. */ | |
637 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 638 | long reserved; |
ae9a127f | 639 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
640 | } RPDR, *pRPDR; |
641 | #define cbRPDR sizeof (RPDR) | |
642 | #define rpdNil ((pRPDR) 0) | |
643 | \f | |
b15e6682 | 644 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
645 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
646 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 647 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 648 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
649 | static bfd_vma mips_elf_high |
650 | (bfd_vma); | |
b34976b6 | 651 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
652 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
653 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
654 | bfd_vma *, asection *); | |
9719ad41 RS |
655 | static hashval_t mips_elf_got_entry_hash |
656 | (const void *); | |
f4416af6 | 657 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 658 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 659 | static struct mips_got_info *mips_elf_got_for_ibfd |
9719ad41 | 660 | (struct mips_got_info *, bfd *); |
f4416af6 | 661 | |
b49e97c9 TS |
662 | /* This will be used when we sort the dynamic relocation records. */ |
663 | static bfd *reldyn_sorting_bfd; | |
664 | ||
6d30f5b2 NC |
665 | /* True if ABFD is for CPUs with load interlocking that include |
666 | non-MIPS1 CPUs and R3900. */ | |
667 | #define LOAD_INTERLOCKS_P(abfd) \ | |
668 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
669 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
670 | ||
861fb55a DJ |
671 | /* True if ABFD is a PIC object. */ |
672 | #define PIC_OBJECT_P(abfd) \ | |
673 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
674 | ||
b49e97c9 | 675 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
676 | #define ABI_N32_P(abfd) \ |
677 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
678 | ||
4a14403c | 679 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 680 | #define ABI_64_P(abfd) \ |
141ff970 | 681 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 682 | |
4a14403c TS |
683 | /* Nonzero if ABFD is using NewABI conventions. */ |
684 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
685 | ||
686 | /* The IRIX compatibility level we are striving for. */ | |
b49e97c9 TS |
687 | #define IRIX_COMPAT(abfd) \ |
688 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
689 | ||
b49e97c9 TS |
690 | /* Whether we are trying to be compatible with IRIX at all. */ |
691 | #define SGI_COMPAT(abfd) \ | |
692 | (IRIX_COMPAT (abfd) != ict_none) | |
693 | ||
694 | /* The name of the options section. */ | |
695 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 696 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 697 | |
cc2e31b9 RS |
698 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
699 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
700 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
701 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
702 | ||
943284cc DJ |
703 | /* Whether the section is readonly. */ |
704 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
705 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
706 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
707 | ||
b49e97c9 | 708 | /* The name of the stub section. */ |
ca07892d | 709 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
710 | |
711 | /* The size of an external REL relocation. */ | |
712 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
713 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
714 | ||
0a44bf69 RS |
715 | /* The size of an external RELA relocation. */ |
716 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
717 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
718 | ||
b49e97c9 TS |
719 | /* The size of an external dynamic table entry. */ |
720 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
721 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
722 | ||
723 | /* The size of a GOT entry. */ | |
724 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
725 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
726 | ||
727 | /* The size of a symbol-table entry. */ | |
728 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
729 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
730 | ||
731 | /* The default alignment for sections, as a power of two. */ | |
732 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 733 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
734 | |
735 | /* Get word-sized data. */ | |
736 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
737 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
738 | ||
739 | /* Put out word-sized data. */ | |
740 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
741 | (ABI_64_P (abfd) \ | |
742 | ? bfd_put_64 (abfd, val, ptr) \ | |
743 | : bfd_put_32 (abfd, val, ptr)) | |
744 | ||
861fb55a DJ |
745 | /* The opcode for word-sized loads (LW or LD). */ |
746 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
747 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
748 | ||
b49e97c9 | 749 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 750 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 751 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
752 | |
753 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
754 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
755 | ||
4ffba85c AO |
756 | /* Determine whether the internal relocation of index REL_IDX is REL |
757 | (zero) or RELA (non-zero). The assumption is that, if there are | |
758 | two relocation sections for this section, one of them is REL and | |
759 | the other is RELA. If the index of the relocation we're testing is | |
760 | in range for the first relocation section, check that the external | |
761 | relocation size is that for RELA. It is also assumed that, if | |
762 | rel_idx is not in range for the first section, and this first | |
763 | section contains REL relocs, then the relocation is in the second | |
764 | section, that is RELA. */ | |
765 | #define MIPS_RELOC_RELA_P(abfd, sec, rel_idx) \ | |
766 | ((NUM_SHDR_ENTRIES (&elf_section_data (sec)->rel_hdr) \ | |
767 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel \ | |
768 | > (bfd_vma)(rel_idx)) \ | |
769 | == (elf_section_data (sec)->rel_hdr.sh_entsize \ | |
770 | == (ABI_64_P (abfd) ? sizeof (Elf64_External_Rela) \ | |
771 | : sizeof (Elf32_External_Rela)))) | |
772 | ||
0a44bf69 RS |
773 | /* The name of the dynamic relocation section. */ |
774 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
775 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
776 | ||
b49e97c9 TS |
777 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
778 | from smaller values. Start with zero, widen, *then* decrement. */ | |
779 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 780 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 781 | |
51e38d68 RS |
782 | /* The value to write into got[1] for SVR4 targets, to identify it is |
783 | a GNU object. The dynamic linker can then use got[1] to store the | |
784 | module pointer. */ | |
785 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
786 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
787 | ||
f4416af6 | 788 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
789 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
790 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
791 | |
792 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
793 | offsets from $gp. */ | |
0a44bf69 | 794 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 795 | |
6a691779 | 796 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
797 | #define STUB_LW(abfd) \ |
798 | ((ABI_64_P (abfd) \ | |
799 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
800 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
801 | #define STUB_MOVE(abfd) \ | |
802 | ((ABI_64_P (abfd) \ | |
803 | ? 0x03e0782d /* daddu t7,ra */ \ | |
804 | : 0x03e07821)) /* addu t7,ra */ | |
805 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
806 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
807 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
808 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
809 | #define STUB_LI16S(abfd, VAL) \ |
810 | ((ABI_64_P (abfd) \ | |
811 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
812 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
813 | ||
5108fc1b RS |
814 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
815 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
816 | |
817 | /* The name of the dynamic interpreter. This is put in the .interp | |
818 | section. */ | |
819 | ||
820 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
821 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
822 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
823 | : "/usr/lib/libc.so.1") | |
824 | ||
825 | #ifdef BFD64 | |
ee6423ed AO |
826 | #define MNAME(bfd,pre,pos) \ |
827 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
828 | #define ELF_R_SYM(bfd, i) \ |
829 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
830 | #define ELF_R_TYPE(bfd, i) \ | |
831 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
832 | #define ELF_R_INFO(bfd, s, t) \ | |
833 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
834 | #else | |
ee6423ed | 835 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
836 | #define ELF_R_SYM(bfd, i) \ |
837 | (ELF32_R_SYM (i)) | |
838 | #define ELF_R_TYPE(bfd, i) \ | |
839 | (ELF32_R_TYPE (i)) | |
840 | #define ELF_R_INFO(bfd, s, t) \ | |
841 | (ELF32_R_INFO (s, t)) | |
842 | #endif | |
843 | \f | |
844 | /* The mips16 compiler uses a couple of special sections to handle | |
845 | floating point arguments. | |
846 | ||
847 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
848 | copy floating point arguments from the fp regs to the gp regs and | |
849 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
850 | call should be redirected to the stub instead. If no 32 bit | |
851 | function calls FNNAME, the stub should be discarded. We need to | |
852 | consider any reference to the function, not just a call, because | |
853 | if the address of the function is taken we will need the stub, | |
854 | since the address might be passed to a 32 bit function. | |
855 | ||
856 | Section names that look like .mips16.call.FNNAME contain stubs | |
857 | that copy floating point arguments from the gp regs to the fp | |
858 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
859 | then any 16 bit function that calls FNNAME should be redirected | |
860 | to the stub instead. If FNNAME is not a 32 bit function, the | |
861 | stub should be discarded. | |
862 | ||
863 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
864 | which call FNNAME and then copy the return value from the fp regs | |
865 | to the gp regs. These stubs store the return value in $18 while | |
866 | calling FNNAME; any function which might call one of these stubs | |
867 | must arrange to save $18 around the call. (This case is not | |
868 | needed for 32 bit functions that call 16 bit functions, because | |
869 | 16 bit functions always return floating point values in both | |
870 | $f0/$f1 and $2/$3.) | |
871 | ||
872 | Note that in all cases FNNAME might be defined statically. | |
873 | Therefore, FNNAME is not used literally. Instead, the relocation | |
874 | information will indicate which symbol the section is for. | |
875 | ||
876 | We record any stubs that we find in the symbol table. */ | |
877 | ||
878 | #define FN_STUB ".mips16.fn." | |
879 | #define CALL_STUB ".mips16.call." | |
880 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
881 | |
882 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
883 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
884 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 885 | \f |
861fb55a | 886 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
887 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
888 | { | |
861fb55a DJ |
889 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
890 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
891 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
892 | 0x031cc023, /* subu $24, $24, $28 */ | |
893 | 0x03e07821, /* move $15, $31 */ | |
894 | 0x0018c082, /* srl $24, $24, 2 */ | |
895 | 0x0320f809, /* jalr $25 */ | |
896 | 0x2718fffe /* subu $24, $24, 2 */ | |
897 | }; | |
898 | ||
899 | /* The format of the first PLT entry in an N32 executable. Different | |
900 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
901 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
902 | { | |
861fb55a DJ |
903 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
904 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
905 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
906 | 0x030ec023, /* subu $24, $24, $14 */ | |
907 | 0x03e07821, /* move $15, $31 */ | |
908 | 0x0018c082, /* srl $24, $24, 2 */ | |
909 | 0x0320f809, /* jalr $25 */ | |
910 | 0x2718fffe /* subu $24, $24, 2 */ | |
911 | }; | |
912 | ||
913 | /* The format of the first PLT entry in an N64 executable. Different | |
914 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
915 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
916 | { | |
861fb55a DJ |
917 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
918 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
919 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
920 | 0x030ec023, /* subu $24, $24, $14 */ | |
921 | 0x03e07821, /* move $15, $31 */ | |
922 | 0x0018c0c2, /* srl $24, $24, 3 */ | |
923 | 0x0320f809, /* jalr $25 */ | |
924 | 0x2718fffe /* subu $24, $24, 2 */ | |
925 | }; | |
926 | ||
927 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
928 | static const bfd_vma mips_exec_plt_entry[] = |
929 | { | |
861fb55a DJ |
930 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
931 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
932 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
933 | 0x03200008 /* jr $25 */ | |
934 | }; | |
935 | ||
0a44bf69 | 936 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
937 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
938 | { | |
0a44bf69 RS |
939 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
940 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
941 | 0x8f390008, /* lw t9, 8(t9) */ | |
942 | 0x00000000, /* nop */ | |
943 | 0x03200008, /* jr t9 */ | |
944 | 0x00000000 /* nop */ | |
945 | }; | |
946 | ||
947 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
948 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
949 | { | |
0a44bf69 RS |
950 | 0x10000000, /* b .PLT_resolver */ |
951 | 0x24180000, /* li t8, <pltindex> */ | |
952 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
953 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
954 | 0x8f390000, /* lw t9, 0(t9) */ | |
955 | 0x00000000, /* nop */ | |
956 | 0x03200008, /* jr t9 */ | |
957 | 0x00000000 /* nop */ | |
958 | }; | |
959 | ||
960 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
961 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
962 | { | |
0a44bf69 RS |
963 | 0x8f990008, /* lw t9, 8(gp) */ |
964 | 0x00000000, /* nop */ | |
965 | 0x03200008, /* jr t9 */ | |
966 | 0x00000000, /* nop */ | |
967 | 0x00000000, /* nop */ | |
968 | 0x00000000 /* nop */ | |
969 | }; | |
970 | ||
971 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
972 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
973 | { | |
0a44bf69 RS |
974 | 0x10000000, /* b .PLT_resolver */ |
975 | 0x24180000 /* li t8, <pltindex> */ | |
976 | }; | |
977 | \f | |
b49e97c9 TS |
978 | /* Look up an entry in a MIPS ELF linker hash table. */ |
979 | ||
980 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
981 | ((struct mips_elf_link_hash_entry *) \ | |
982 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
983 | (copy), (follow))) | |
984 | ||
985 | /* Traverse a MIPS ELF linker hash table. */ | |
986 | ||
987 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
988 | (elf_link_hash_traverse \ | |
989 | (&(table)->root, \ | |
9719ad41 | 990 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
991 | (info))) |
992 | ||
993 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
994 | ||
995 | #define mips_elf_hash_table(p) \ | |
996 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
997 | ||
0f20cc35 DJ |
998 | /* Find the base offsets for thread-local storage in this object, |
999 | for GD/LD and IE/LE respectively. */ | |
1000 | ||
1001 | #define TP_OFFSET 0x7000 | |
1002 | #define DTP_OFFSET 0x8000 | |
1003 | ||
1004 | static bfd_vma | |
1005 | dtprel_base (struct bfd_link_info *info) | |
1006 | { | |
1007 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1008 | if (elf_hash_table (info)->tls_sec == NULL) | |
1009 | return 0; | |
1010 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1011 | } | |
1012 | ||
1013 | static bfd_vma | |
1014 | tprel_base (struct bfd_link_info *info) | |
1015 | { | |
1016 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1017 | if (elf_hash_table (info)->tls_sec == NULL) | |
1018 | return 0; | |
1019 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1020 | } | |
1021 | ||
b49e97c9 TS |
1022 | /* Create an entry in a MIPS ELF linker hash table. */ |
1023 | ||
1024 | static struct bfd_hash_entry * | |
9719ad41 RS |
1025 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1026 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1027 | { |
1028 | struct mips_elf_link_hash_entry *ret = | |
1029 | (struct mips_elf_link_hash_entry *) entry; | |
1030 | ||
1031 | /* Allocate the structure if it has not already been allocated by a | |
1032 | subclass. */ | |
9719ad41 RS |
1033 | if (ret == NULL) |
1034 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1035 | if (ret == NULL) | |
b49e97c9 TS |
1036 | return (struct bfd_hash_entry *) ret; |
1037 | ||
1038 | /* Call the allocation method of the superclass. */ | |
1039 | ret = ((struct mips_elf_link_hash_entry *) | |
1040 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1041 | table, string)); | |
9719ad41 | 1042 | if (ret != NULL) |
b49e97c9 TS |
1043 | { |
1044 | /* Set local fields. */ | |
1045 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1046 | /* We use -2 as a marker to indicate that the information has | |
1047 | not been set. -1 means there is no associated ifd. */ | |
1048 | ret->esym.ifd = -2; | |
861fb55a | 1049 | ret->la25_stub = 0; |
b49e97c9 | 1050 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1051 | ret->fn_stub = NULL; |
b49e97c9 TS |
1052 | ret->call_stub = NULL; |
1053 | ret->call_fp_stub = NULL; | |
71782a75 | 1054 | ret->tls_type = GOT_NORMAL; |
634835ae | 1055 | ret->global_got_area = GGA_NONE; |
71782a75 | 1056 | ret->readonly_reloc = FALSE; |
861fb55a | 1057 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1058 | ret->no_fn_stub = FALSE; |
1059 | ret->need_fn_stub = FALSE; | |
861fb55a | 1060 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1061 | ret->needs_lazy_stub = FALSE; |
b49e97c9 TS |
1062 | } |
1063 | ||
1064 | return (struct bfd_hash_entry *) ret; | |
1065 | } | |
f0abc2a1 AM |
1066 | |
1067 | bfd_boolean | |
9719ad41 | 1068 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1069 | { |
f592407e AM |
1070 | if (!sec->used_by_bfd) |
1071 | { | |
1072 | struct _mips_elf_section_data *sdata; | |
1073 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1074 | |
f592407e AM |
1075 | sdata = bfd_zalloc (abfd, amt); |
1076 | if (sdata == NULL) | |
1077 | return FALSE; | |
1078 | sec->used_by_bfd = sdata; | |
1079 | } | |
f0abc2a1 AM |
1080 | |
1081 | return _bfd_elf_new_section_hook (abfd, sec); | |
1082 | } | |
b49e97c9 TS |
1083 | \f |
1084 | /* Read ECOFF debugging information from a .mdebug section into a | |
1085 | ecoff_debug_info structure. */ | |
1086 | ||
b34976b6 | 1087 | bfd_boolean |
9719ad41 RS |
1088 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1089 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1090 | { |
1091 | HDRR *symhdr; | |
1092 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1093 | char *ext_hdr; |
b49e97c9 TS |
1094 | |
1095 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1096 | memset (debug, 0, sizeof (*debug)); | |
1097 | ||
9719ad41 | 1098 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1099 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1100 | goto error_return; | |
1101 | ||
9719ad41 | 1102 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1103 | swap->external_hdr_size)) |
b49e97c9 TS |
1104 | goto error_return; |
1105 | ||
1106 | symhdr = &debug->symbolic_header; | |
1107 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1108 | ||
1109 | /* The symbolic header contains absolute file offsets and sizes to | |
1110 | read. */ | |
1111 | #define READ(ptr, offset, count, size, type) \ | |
1112 | if (symhdr->count == 0) \ | |
1113 | debug->ptr = NULL; \ | |
1114 | else \ | |
1115 | { \ | |
1116 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1117 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1118 | if (debug->ptr == NULL) \ |
1119 | goto error_return; \ | |
9719ad41 | 1120 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1121 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1122 | goto error_return; \ | |
1123 | } | |
1124 | ||
1125 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1126 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1127 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1128 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1129 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1130 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1131 | union aux_ext *); | |
1132 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1133 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1134 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1135 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1136 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1137 | #undef READ |
1138 | ||
1139 | debug->fdr = NULL; | |
b49e97c9 | 1140 | |
b34976b6 | 1141 | return TRUE; |
b49e97c9 TS |
1142 | |
1143 | error_return: | |
1144 | if (ext_hdr != NULL) | |
1145 | free (ext_hdr); | |
1146 | if (debug->line != NULL) | |
1147 | free (debug->line); | |
1148 | if (debug->external_dnr != NULL) | |
1149 | free (debug->external_dnr); | |
1150 | if (debug->external_pdr != NULL) | |
1151 | free (debug->external_pdr); | |
1152 | if (debug->external_sym != NULL) | |
1153 | free (debug->external_sym); | |
1154 | if (debug->external_opt != NULL) | |
1155 | free (debug->external_opt); | |
1156 | if (debug->external_aux != NULL) | |
1157 | free (debug->external_aux); | |
1158 | if (debug->ss != NULL) | |
1159 | free (debug->ss); | |
1160 | if (debug->ssext != NULL) | |
1161 | free (debug->ssext); | |
1162 | if (debug->external_fdr != NULL) | |
1163 | free (debug->external_fdr); | |
1164 | if (debug->external_rfd != NULL) | |
1165 | free (debug->external_rfd); | |
1166 | if (debug->external_ext != NULL) | |
1167 | free (debug->external_ext); | |
b34976b6 | 1168 | return FALSE; |
b49e97c9 TS |
1169 | } |
1170 | \f | |
1171 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1172 | ||
1173 | static void | |
9719ad41 | 1174 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1175 | { |
1176 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1177 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1178 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1179 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1180 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1181 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1182 | ||
1183 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1184 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1185 | ||
1186 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1187 | } |
1188 | ||
1189 | /* Create a runtime procedure table from the .mdebug section. */ | |
1190 | ||
b34976b6 | 1191 | static bfd_boolean |
9719ad41 RS |
1192 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1193 | struct bfd_link_info *info, asection *s, | |
1194 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1195 | { |
1196 | const struct ecoff_debug_swap *swap; | |
1197 | HDRR *hdr = &debug->symbolic_header; | |
1198 | RPDR *rpdr, *rp; | |
1199 | struct rpdr_ext *erp; | |
9719ad41 | 1200 | void *rtproc; |
b49e97c9 TS |
1201 | struct pdr_ext *epdr; |
1202 | struct sym_ext *esym; | |
1203 | char *ss, **sv; | |
1204 | char *str; | |
1205 | bfd_size_type size; | |
1206 | bfd_size_type count; | |
1207 | unsigned long sindex; | |
1208 | unsigned long i; | |
1209 | PDR pdr; | |
1210 | SYMR sym; | |
1211 | const char *no_name_func = _("static procedure (no name)"); | |
1212 | ||
1213 | epdr = NULL; | |
1214 | rpdr = NULL; | |
1215 | esym = NULL; | |
1216 | ss = NULL; | |
1217 | sv = NULL; | |
1218 | ||
1219 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1220 | ||
1221 | sindex = strlen (no_name_func) + 1; | |
1222 | count = hdr->ipdMax; | |
1223 | if (count > 0) | |
1224 | { | |
1225 | size = swap->external_pdr_size; | |
1226 | ||
9719ad41 | 1227 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1228 | if (epdr == NULL) |
1229 | goto error_return; | |
1230 | ||
9719ad41 | 1231 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1232 | goto error_return; |
1233 | ||
1234 | size = sizeof (RPDR); | |
9719ad41 | 1235 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1236 | if (rpdr == NULL) |
1237 | goto error_return; | |
1238 | ||
1239 | size = sizeof (char *); | |
9719ad41 | 1240 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1241 | if (sv == NULL) |
1242 | goto error_return; | |
1243 | ||
1244 | count = hdr->isymMax; | |
1245 | size = swap->external_sym_size; | |
9719ad41 | 1246 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1247 | if (esym == NULL) |
1248 | goto error_return; | |
1249 | ||
9719ad41 | 1250 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1251 | goto error_return; |
1252 | ||
1253 | count = hdr->issMax; | |
9719ad41 | 1254 | ss = bfd_malloc (count); |
b49e97c9 TS |
1255 | if (ss == NULL) |
1256 | goto error_return; | |
f075ee0c | 1257 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1258 | goto error_return; |
1259 | ||
1260 | count = hdr->ipdMax; | |
1261 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1262 | { | |
9719ad41 RS |
1263 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1264 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1265 | rp->adr = sym.value; |
1266 | rp->regmask = pdr.regmask; | |
1267 | rp->regoffset = pdr.regoffset; | |
1268 | rp->fregmask = pdr.fregmask; | |
1269 | rp->fregoffset = pdr.fregoffset; | |
1270 | rp->frameoffset = pdr.frameoffset; | |
1271 | rp->framereg = pdr.framereg; | |
1272 | rp->pcreg = pdr.pcreg; | |
1273 | rp->irpss = sindex; | |
1274 | sv[i] = ss + sym.iss; | |
1275 | sindex += strlen (sv[i]) + 1; | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1280 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1281 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1282 | if (rtproc == NULL) |
1283 | { | |
1284 | mips_elf_hash_table (info)->procedure_count = 0; | |
1285 | goto error_return; | |
1286 | } | |
1287 | ||
1288 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1289 | ||
9719ad41 | 1290 | erp = rtproc; |
b49e97c9 TS |
1291 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1292 | erp++; | |
1293 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1294 | strcpy (str, no_name_func); | |
1295 | str += strlen (no_name_func) + 1; | |
1296 | for (i = 0; i < count; i++) | |
1297 | { | |
1298 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1299 | strcpy (str, sv[i]); | |
1300 | str += strlen (sv[i]) + 1; | |
1301 | } | |
1302 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1303 | ||
1304 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1305 | s->size = size; |
9719ad41 | 1306 | s->contents = rtproc; |
b49e97c9 TS |
1307 | |
1308 | /* Skip this section later on (I don't think this currently | |
1309 | matters, but someday it might). */ | |
8423293d | 1310 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1311 | |
1312 | if (epdr != NULL) | |
1313 | free (epdr); | |
1314 | if (rpdr != NULL) | |
1315 | free (rpdr); | |
1316 | if (esym != NULL) | |
1317 | free (esym); | |
1318 | if (ss != NULL) | |
1319 | free (ss); | |
1320 | if (sv != NULL) | |
1321 | free (sv); | |
1322 | ||
b34976b6 | 1323 | return TRUE; |
b49e97c9 TS |
1324 | |
1325 | error_return: | |
1326 | if (epdr != NULL) | |
1327 | free (epdr); | |
1328 | if (rpdr != NULL) | |
1329 | free (rpdr); | |
1330 | if (esym != NULL) | |
1331 | free (esym); | |
1332 | if (ss != NULL) | |
1333 | free (ss); | |
1334 | if (sv != NULL) | |
1335 | free (sv); | |
b34976b6 | 1336 | return FALSE; |
b49e97c9 | 1337 | } |
738e5348 | 1338 | \f |
861fb55a DJ |
1339 | /* We're going to create a stub for H. Create a symbol for the stub's |
1340 | value and size, to help make the disassembly easier to read. */ | |
1341 | ||
1342 | static bfd_boolean | |
1343 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1344 | struct mips_elf_link_hash_entry *h, | |
1345 | const char *prefix, asection *s, bfd_vma value, | |
1346 | bfd_vma size) | |
1347 | { | |
1348 | struct bfd_link_hash_entry *bh; | |
1349 | struct elf_link_hash_entry *elfh; | |
1350 | const char *name; | |
1351 | ||
1352 | /* Create a new symbol. */ | |
1353 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1354 | bh = NULL; | |
1355 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1356 | BSF_LOCAL, s, value, NULL, | |
1357 | TRUE, FALSE, &bh)) | |
1358 | return FALSE; | |
1359 | ||
1360 | /* Make it a local function. */ | |
1361 | elfh = (struct elf_link_hash_entry *) bh; | |
1362 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1363 | elfh->size = size; | |
1364 | elfh->forced_local = 1; | |
1365 | return TRUE; | |
1366 | } | |
1367 | ||
738e5348 RS |
1368 | /* We're about to redefine H. Create a symbol to represent H's |
1369 | current value and size, to help make the disassembly easier | |
1370 | to read. */ | |
1371 | ||
1372 | static bfd_boolean | |
1373 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1374 | struct mips_elf_link_hash_entry *h, | |
1375 | const char *prefix) | |
1376 | { | |
1377 | struct bfd_link_hash_entry *bh; | |
1378 | struct elf_link_hash_entry *elfh; | |
1379 | const char *name; | |
1380 | asection *s; | |
1381 | bfd_vma value; | |
1382 | ||
1383 | /* Read the symbol's value. */ | |
1384 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1385 | || h->root.root.type == bfd_link_hash_defweak); | |
1386 | s = h->root.root.u.def.section; | |
1387 | value = h->root.root.u.def.value; | |
1388 | ||
1389 | /* Create a new symbol. */ | |
1390 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1391 | bh = NULL; | |
1392 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1393 | BSF_LOCAL, s, value, NULL, | |
1394 | TRUE, FALSE, &bh)) | |
1395 | return FALSE; | |
1396 | ||
1397 | /* Make it local and copy the other attributes from H. */ | |
1398 | elfh = (struct elf_link_hash_entry *) bh; | |
1399 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1400 | elfh->other = h->root.other; | |
1401 | elfh->size = h->root.size; | |
1402 | elfh->forced_local = 1; | |
1403 | return TRUE; | |
1404 | } | |
1405 | ||
1406 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1407 | function rather than to a hard-float stub. */ | |
1408 | ||
1409 | static bfd_boolean | |
1410 | section_allows_mips16_refs_p (asection *section) | |
1411 | { | |
1412 | const char *name; | |
1413 | ||
1414 | name = bfd_get_section_name (section->owner, section); | |
1415 | return (FN_STUB_P (name) | |
1416 | || CALL_STUB_P (name) | |
1417 | || CALL_FP_STUB_P (name) | |
1418 | || strcmp (name, ".pdr") == 0); | |
1419 | } | |
1420 | ||
1421 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1422 | stub section of some kind. Return the R_SYMNDX of the target | |
1423 | function, or 0 if we can't decide which function that is. */ | |
1424 | ||
1425 | static unsigned long | |
502e814e TT |
1426 | mips16_stub_symndx (asection *sec ATTRIBUTE_UNUSED, |
1427 | const Elf_Internal_Rela *relocs, | |
738e5348 RS |
1428 | const Elf_Internal_Rela *relend) |
1429 | { | |
1430 | const Elf_Internal_Rela *rel; | |
1431 | ||
1432 | /* Trust the first R_MIPS_NONE relocation, if any. */ | |
1433 | for (rel = relocs; rel < relend; rel++) | |
1434 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) | |
1435 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1436 | ||
1437 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1438 | the traditional behavior. */ | |
1439 | if (relocs < relend) | |
1440 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1441 | ||
1442 | return 0; | |
1443 | } | |
b49e97c9 TS |
1444 | |
1445 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1446 | discard them. */ | |
1447 | ||
861fb55a DJ |
1448 | static void |
1449 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1450 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1451 | { |
738e5348 RS |
1452 | /* Dynamic symbols must use the standard call interface, in case other |
1453 | objects try to call them. */ | |
1454 | if (h->fn_stub != NULL | |
1455 | && h->root.dynindx != -1) | |
1456 | { | |
1457 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1458 | h->need_fn_stub = TRUE; | |
1459 | } | |
1460 | ||
b49e97c9 TS |
1461 | if (h->fn_stub != NULL |
1462 | && ! h->need_fn_stub) | |
1463 | { | |
1464 | /* We don't need the fn_stub; the only references to this symbol | |
1465 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1466 | being included in the link. */ | |
eea6121a | 1467 | h->fn_stub->size = 0; |
b49e97c9 TS |
1468 | h->fn_stub->flags &= ~SEC_RELOC; |
1469 | h->fn_stub->reloc_count = 0; | |
1470 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1471 | } | |
1472 | ||
1473 | if (h->call_stub != NULL | |
30c09090 | 1474 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1475 | { |
1476 | /* We don't need the call_stub; this is a 16 bit function, so | |
1477 | calls from other 16 bit functions are OK. Clobber the size | |
1478 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1479 | h->call_stub->size = 0; |
b49e97c9 TS |
1480 | h->call_stub->flags &= ~SEC_RELOC; |
1481 | h->call_stub->reloc_count = 0; | |
1482 | h->call_stub->flags |= SEC_EXCLUDE; | |
1483 | } | |
1484 | ||
1485 | if (h->call_fp_stub != NULL | |
30c09090 | 1486 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1487 | { |
1488 | /* We don't need the call_stub; this is a 16 bit function, so | |
1489 | calls from other 16 bit functions are OK. Clobber the size | |
1490 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1491 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1492 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1493 | h->call_fp_stub->reloc_count = 0; | |
1494 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1495 | } | |
861fb55a DJ |
1496 | } |
1497 | ||
1498 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1499 | ||
1500 | static hashval_t | |
1501 | mips_elf_la25_stub_hash (const void *entry_) | |
1502 | { | |
1503 | const struct mips_elf_la25_stub *entry; | |
1504 | ||
1505 | entry = (struct mips_elf_la25_stub *) entry_; | |
1506 | return entry->h->root.root.u.def.section->id | |
1507 | + entry->h->root.root.u.def.value; | |
1508 | } | |
1509 | ||
1510 | static int | |
1511 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1512 | { | |
1513 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1514 | ||
1515 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1516 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1517 | return ((entry1->h->root.root.u.def.section | |
1518 | == entry2->h->root.root.u.def.section) | |
1519 | && (entry1->h->root.root.u.def.value | |
1520 | == entry2->h->root.root.u.def.value)); | |
1521 | } | |
1522 | ||
1523 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1524 | the linker's implementation of add_stub_function. Return true on | |
1525 | success. */ | |
1526 | ||
1527 | bfd_boolean | |
1528 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1529 | asection *(*fn) (const char *, asection *, | |
1530 | asection *)) | |
1531 | { | |
1532 | struct mips_elf_link_hash_table *htab; | |
1533 | ||
1534 | htab = mips_elf_hash_table (info); | |
1535 | htab->add_stub_section = fn; | |
1536 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1537 | mips_elf_la25_stub_eq, NULL); | |
1538 | if (htab->la25_stubs == NULL) | |
1539 | return FALSE; | |
1540 | ||
1541 | return TRUE; | |
1542 | } | |
1543 | ||
1544 | /* Return true if H is a locally-defined PIC function, in the sense | |
1545 | that it might need $25 to be valid on entry. Note that MIPS16 | |
1546 | functions never need $25 to be valid on entry; they set up $gp | |
1547 | using PC-relative instructions instead. */ | |
1548 | ||
1549 | static bfd_boolean | |
1550 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1551 | { | |
1552 | return ((h->root.root.type == bfd_link_hash_defined | |
1553 | || h->root.root.type == bfd_link_hash_defweak) | |
1554 | && h->root.def_regular | |
1555 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
1556 | && !ELF_ST_IS_MIPS16 (h->root.other) | |
1557 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) | |
1558 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1559 | } | |
1560 | ||
1561 | /* STUB describes an la25 stub that we have decided to implement | |
1562 | by inserting an LUI/ADDIU pair before the target function. | |
1563 | Create the section and redirect the function symbol to it. */ | |
1564 | ||
1565 | static bfd_boolean | |
1566 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1567 | struct bfd_link_info *info) | |
1568 | { | |
1569 | struct mips_elf_link_hash_table *htab; | |
1570 | char *name; | |
1571 | asection *s, *input_section; | |
1572 | unsigned int align; | |
1573 | ||
1574 | htab = mips_elf_hash_table (info); | |
1575 | ||
1576 | /* Create a unique name for the new section. */ | |
1577 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1578 | if (name == NULL) | |
1579 | return FALSE; | |
1580 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1581 | ||
1582 | /* Create the section. */ | |
1583 | input_section = stub->h->root.root.u.def.section; | |
1584 | s = htab->add_stub_section (name, input_section, | |
1585 | input_section->output_section); | |
1586 | if (s == NULL) | |
1587 | return FALSE; | |
1588 | ||
1589 | /* Make sure that any padding goes before the stub. */ | |
1590 | align = input_section->alignment_power; | |
1591 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1592 | return FALSE; | |
1593 | if (align > 3) | |
1594 | s->size = (1 << align) - 8; | |
1595 | ||
1596 | /* Create a symbol for the stub. */ | |
1597 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1598 | stub->stub_section = s; | |
1599 | stub->offset = s->size; | |
1600 | ||
1601 | /* Allocate room for it. */ | |
1602 | s->size += 8; | |
1603 | return TRUE; | |
1604 | } | |
1605 | ||
1606 | /* STUB describes an la25 stub that we have decided to implement | |
1607 | with a separate trampoline. Allocate room for it and redirect | |
1608 | the function symbol to it. */ | |
1609 | ||
1610 | static bfd_boolean | |
1611 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1612 | struct bfd_link_info *info) | |
1613 | { | |
1614 | struct mips_elf_link_hash_table *htab; | |
1615 | asection *s; | |
1616 | ||
1617 | htab = mips_elf_hash_table (info); | |
1618 | ||
1619 | /* Create a trampoline section, if we haven't already. */ | |
1620 | s = htab->strampoline; | |
1621 | if (s == NULL) | |
1622 | { | |
1623 | asection *input_section = stub->h->root.root.u.def.section; | |
1624 | s = htab->add_stub_section (".text", NULL, | |
1625 | input_section->output_section); | |
1626 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1627 | return FALSE; | |
1628 | htab->strampoline = s; | |
1629 | } | |
1630 | ||
1631 | /* Create a symbol for the stub. */ | |
1632 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1633 | stub->stub_section = s; | |
1634 | stub->offset = s->size; | |
1635 | ||
1636 | /* Allocate room for it. */ | |
1637 | s->size += 16; | |
1638 | return TRUE; | |
1639 | } | |
1640 | ||
1641 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1642 | appropriate stub exists and point H at it. */ | |
1643 | ||
1644 | static bfd_boolean | |
1645 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1646 | struct mips_elf_link_hash_entry *h) | |
1647 | { | |
1648 | struct mips_elf_link_hash_table *htab; | |
1649 | struct mips_elf_la25_stub search, *stub; | |
1650 | bfd_boolean use_trampoline_p; | |
1651 | asection *s; | |
1652 | bfd_vma value; | |
1653 | void **slot; | |
1654 | ||
1655 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning | |
1656 | of the section and if we would need no more than 2 nops. */ | |
1657 | s = h->root.root.u.def.section; | |
1658 | value = h->root.root.u.def.value; | |
1659 | use_trampoline_p = (value != 0 || s->alignment_power > 4); | |
1660 | ||
1661 | /* Describe the stub we want. */ | |
1662 | search.stub_section = NULL; | |
1663 | search.offset = 0; | |
1664 | search.h = h; | |
1665 | ||
1666 | /* See if we've already created an equivalent stub. */ | |
1667 | htab = mips_elf_hash_table (info); | |
1668 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); | |
1669 | if (slot == NULL) | |
1670 | return FALSE; | |
1671 | ||
1672 | stub = (struct mips_elf_la25_stub *) *slot; | |
1673 | if (stub != NULL) | |
1674 | { | |
1675 | /* We can reuse the existing stub. */ | |
1676 | h->la25_stub = stub; | |
1677 | return TRUE; | |
1678 | } | |
1679 | ||
1680 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1681 | stub = bfd_malloc (sizeof (search)); | |
1682 | if (stub == NULL) | |
1683 | return FALSE; | |
1684 | *stub = search; | |
1685 | *slot = stub; | |
1686 | ||
1687 | h->la25_stub = stub; | |
1688 | return (use_trampoline_p | |
1689 | ? mips_elf_add_la25_trampoline (stub, info) | |
1690 | : mips_elf_add_la25_intro (stub, info)); | |
1691 | } | |
1692 | ||
1693 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1694 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1695 | ||
1696 | static bfd_boolean | |
1697 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1698 | { | |
1699 | struct mips_htab_traverse_info *hti; | |
1700 | ||
1701 | hti = (struct mips_htab_traverse_info *) data; | |
1702 | if (h->root.root.type == bfd_link_hash_warning) | |
1703 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
1704 | ||
1705 | if (!hti->info->relocatable) | |
1706 | mips_elf_check_mips16_stubs (hti->info, h); | |
b49e97c9 | 1707 | |
861fb55a DJ |
1708 | if (mips_elf_local_pic_function_p (h)) |
1709 | { | |
1710 | /* H is a function that might need $25 to be valid on entry. | |
1711 | If we're creating a non-PIC relocatable object, mark H as | |
1712 | being PIC. If we're creating a non-relocatable object with | |
1713 | non-PIC branches and jumps to H, make sure that H has an la25 | |
1714 | stub. */ | |
1715 | if (hti->info->relocatable) | |
1716 | { | |
1717 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
1718 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
1719 | } | |
1720 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
1721 | { | |
1722 | hti->error = TRUE; | |
1723 | return FALSE; | |
1724 | } | |
1725 | } | |
b34976b6 | 1726 | return TRUE; |
b49e97c9 TS |
1727 | } |
1728 | \f | |
d6f16593 MR |
1729 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1730 | Most mips16 instructions are 16 bits, but these instructions | |
1731 | are 32 bits. | |
1732 | ||
1733 | The format of these instructions is: | |
1734 | ||
1735 | +--------------+--------------------------------+ | |
1736 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1737 | +--------------+--------------------------------+ | |
1738 | | Immediate 15:0 | | |
1739 | +-----------------------------------------------+ | |
1740 | ||
1741 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1742 | Note that the immediate value in the first word is swapped. | |
1743 | ||
1744 | When producing a relocatable object file, R_MIPS16_26 is | |
1745 | handled mostly like R_MIPS_26. In particular, the addend is | |
1746 | stored as a straight 26-bit value in a 32-bit instruction. | |
1747 | (gas makes life simpler for itself by never adjusting a | |
1748 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1749 | always zero). However, the 32 bit instruction is stored as 2 | |
1750 | 16-bit values, rather than a single 32-bit value. In a | |
1751 | big-endian file, the result is the same; in a little-endian | |
1752 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1753 | This is so that a disassembler can recognize the jal | |
1754 | instruction. | |
1755 | ||
1756 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1757 | instruction stored as two 16-bit values. The addend A is the | |
1758 | contents of the targ26 field. The calculation is the same as | |
1759 | R_MIPS_26. When storing the calculated value, reorder the | |
1760 | immediate value as shown above, and don't forget to store the | |
1761 | value as two 16-bit values. | |
1762 | ||
1763 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1764 | defined as | |
1765 | ||
1766 | big-endian: | |
1767 | +--------+----------------------+ | |
1768 | | | | | |
1769 | | | targ26-16 | | |
1770 | |31 26|25 0| | |
1771 | +--------+----------------------+ | |
1772 | ||
1773 | little-endian: | |
1774 | +----------+------+-------------+ | |
1775 | | | | | | |
1776 | | sub1 | | sub2 | | |
1777 | |0 9|10 15|16 31| | |
1778 | +----------+--------------------+ | |
1779 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1780 | ((sub1 << 16) | sub2)). | |
1781 | ||
1782 | When producing a relocatable object file, the calculation is | |
1783 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1784 | When producing a fully linked file, the calculation is | |
1785 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1786 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1787 | ||
738e5348 RS |
1788 | The table below lists the other MIPS16 instruction relocations. |
1789 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1790 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1791 | immediate fields: | |
1792 | ||
1793 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1794 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1795 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1796 | R_MIPS16_HI16 R_MIPS_HI16 | |
1797 | R_MIPS16_LO16 R_MIPS_LO16 | |
1798 | ||
1799 | A typical instruction will have a format like this: | |
d6f16593 MR |
1800 | |
1801 | +--------------+--------------------------------+ | |
1802 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1803 | +--------------+--------------------------------+ | |
1804 | | Major | rx | ry | Imm 4:0 | | |
1805 | +--------------+--------------------------------+ | |
1806 | ||
1807 | EXTEND is the five bit value 11110. Major is the instruction | |
1808 | opcode. | |
1809 | ||
738e5348 RS |
1810 | All we need to do here is shuffle the bits appropriately. |
1811 | As above, the two 16-bit halves must be swapped on a | |
1812 | little-endian system. */ | |
1813 | ||
1814 | static inline bfd_boolean | |
1815 | mips16_reloc_p (int r_type) | |
1816 | { | |
1817 | switch (r_type) | |
1818 | { | |
1819 | case R_MIPS16_26: | |
1820 | case R_MIPS16_GPREL: | |
1821 | case R_MIPS16_GOT16: | |
1822 | case R_MIPS16_CALL16: | |
1823 | case R_MIPS16_HI16: | |
1824 | case R_MIPS16_LO16: | |
1825 | return TRUE; | |
1826 | ||
1827 | default: | |
1828 | return FALSE; | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | static inline bfd_boolean | |
1833 | got16_reloc_p (int r_type) | |
1834 | { | |
1835 | return r_type == R_MIPS_GOT16 || r_type == R_MIPS16_GOT16; | |
1836 | } | |
1837 | ||
1838 | static inline bfd_boolean | |
1839 | call16_reloc_p (int r_type) | |
1840 | { | |
1841 | return r_type == R_MIPS_CALL16 || r_type == R_MIPS16_CALL16; | |
1842 | } | |
1843 | ||
1844 | static inline bfd_boolean | |
1845 | hi16_reloc_p (int r_type) | |
1846 | { | |
1847 | return r_type == R_MIPS_HI16 || r_type == R_MIPS16_HI16; | |
1848 | } | |
d6f16593 | 1849 | |
738e5348 RS |
1850 | static inline bfd_boolean |
1851 | lo16_reloc_p (int r_type) | |
1852 | { | |
1853 | return r_type == R_MIPS_LO16 || r_type == R_MIPS16_LO16; | |
1854 | } | |
1855 | ||
1856 | static inline bfd_boolean | |
1857 | mips16_call_reloc_p (int r_type) | |
1858 | { | |
1859 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
1860 | } | |
d6f16593 | 1861 | |
d6f16593 MR |
1862 | void |
1863 | _bfd_mips16_elf_reloc_unshuffle (bfd *abfd, int r_type, | |
1864 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1865 | { | |
1866 | bfd_vma extend, insn, val; | |
1867 | ||
738e5348 | 1868 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1869 | return; |
1870 | ||
1871 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1872 | extend = bfd_get_16 (abfd, data); | |
1873 | insn = bfd_get_16 (abfd, data + 2); | |
1874 | if (r_type == R_MIPS16_26) | |
1875 | { | |
1876 | if (jal_shuffle) | |
1877 | val = ((extend & 0xfc00) << 16) | ((extend & 0x3e0) << 11) | |
1878 | | ((extend & 0x1f) << 21) | insn; | |
1879 | else | |
1880 | val = extend << 16 | insn; | |
1881 | } | |
1882 | else | |
1883 | val = ((extend & 0xf800) << 16) | ((insn & 0xffe0) << 11) | |
1884 | | ((extend & 0x1f) << 11) | (extend & 0x7e0) | (insn & 0x1f); | |
1885 | bfd_put_32 (abfd, val, data); | |
1886 | } | |
1887 | ||
1888 | void | |
1889 | _bfd_mips16_elf_reloc_shuffle (bfd *abfd, int r_type, | |
1890 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1891 | { | |
1892 | bfd_vma extend, insn, val; | |
1893 | ||
738e5348 | 1894 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1895 | return; |
1896 | ||
1897 | val = bfd_get_32 (abfd, data); | |
1898 | if (r_type == R_MIPS16_26) | |
1899 | { | |
1900 | if (jal_shuffle) | |
1901 | { | |
1902 | insn = val & 0xffff; | |
1903 | extend = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
1904 | | ((val >> 21) & 0x1f); | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | insn = val & 0xffff; | |
1909 | extend = val >> 16; | |
1910 | } | |
1911 | } | |
1912 | else | |
1913 | { | |
1914 | insn = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
1915 | extend = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
1916 | } | |
1917 | bfd_put_16 (abfd, insn, data + 2); | |
1918 | bfd_put_16 (abfd, extend, data); | |
1919 | } | |
1920 | ||
b49e97c9 | 1921 | bfd_reloc_status_type |
9719ad41 RS |
1922 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
1923 | arelent *reloc_entry, asection *input_section, | |
1924 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
1925 | { |
1926 | bfd_vma relocation; | |
a7ebbfdf | 1927 | bfd_signed_vma val; |
30ac9238 | 1928 | bfd_reloc_status_type status; |
b49e97c9 TS |
1929 | |
1930 | if (bfd_is_com_section (symbol->section)) | |
1931 | relocation = 0; | |
1932 | else | |
1933 | relocation = symbol->value; | |
1934 | ||
1935 | relocation += symbol->section->output_section->vma; | |
1936 | relocation += symbol->section->output_offset; | |
1937 | ||
07515404 | 1938 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
1939 | return bfd_reloc_outofrange; |
1940 | ||
b49e97c9 | 1941 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
1942 | val = reloc_entry->addend; |
1943 | ||
30ac9238 | 1944 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 1945 | |
b49e97c9 | 1946 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 1947 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 1948 | an external symbol. */ |
1049f94e | 1949 | if (! relocatable |
b49e97c9 TS |
1950 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
1951 | val += relocation - gp; | |
1952 | ||
a7ebbfdf TS |
1953 | if (reloc_entry->howto->partial_inplace) |
1954 | { | |
30ac9238 RS |
1955 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
1956 | (bfd_byte *) data | |
1957 | + reloc_entry->address); | |
1958 | if (status != bfd_reloc_ok) | |
1959 | return status; | |
a7ebbfdf TS |
1960 | } |
1961 | else | |
1962 | reloc_entry->addend = val; | |
b49e97c9 | 1963 | |
1049f94e | 1964 | if (relocatable) |
b49e97c9 | 1965 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
1966 | |
1967 | return bfd_reloc_ok; | |
1968 | } | |
1969 | ||
1970 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
1971 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
1972 | that contains the relocation field and DATA points to the start of | |
1973 | INPUT_SECTION. */ | |
1974 | ||
1975 | struct mips_hi16 | |
1976 | { | |
1977 | struct mips_hi16 *next; | |
1978 | bfd_byte *data; | |
1979 | asection *input_section; | |
1980 | arelent rel; | |
1981 | }; | |
1982 | ||
1983 | /* FIXME: This should not be a static variable. */ | |
1984 | ||
1985 | static struct mips_hi16 *mips_hi16_list; | |
1986 | ||
1987 | /* A howto special_function for REL *HI16 relocations. We can only | |
1988 | calculate the correct value once we've seen the partnering | |
1989 | *LO16 relocation, so just save the information for later. | |
1990 | ||
1991 | The ABI requires that the *LO16 immediately follow the *HI16. | |
1992 | However, as a GNU extension, we permit an arbitrary number of | |
1993 | *HI16s to be associated with a single *LO16. This significantly | |
1994 | simplies the relocation handling in gcc. */ | |
1995 | ||
1996 | bfd_reloc_status_type | |
1997 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
1998 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
1999 | asection *input_section, bfd *output_bfd, | |
2000 | char **error_message ATTRIBUTE_UNUSED) | |
2001 | { | |
2002 | struct mips_hi16 *n; | |
2003 | ||
07515404 | 2004 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2005 | return bfd_reloc_outofrange; |
2006 | ||
2007 | n = bfd_malloc (sizeof *n); | |
2008 | if (n == NULL) | |
2009 | return bfd_reloc_outofrange; | |
2010 | ||
2011 | n->next = mips_hi16_list; | |
2012 | n->data = data; | |
2013 | n->input_section = input_section; | |
2014 | n->rel = *reloc_entry; | |
2015 | mips_hi16_list = n; | |
2016 | ||
2017 | if (output_bfd != NULL) | |
2018 | reloc_entry->address += input_section->output_offset; | |
2019 | ||
2020 | return bfd_reloc_ok; | |
2021 | } | |
2022 | ||
738e5348 | 2023 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2024 | like any other 16-bit relocation when applied to global symbols, but is |
2025 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2026 | ||
2027 | bfd_reloc_status_type | |
2028 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2029 | void *data, asection *input_section, | |
2030 | bfd *output_bfd, char **error_message) | |
2031 | { | |
2032 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2033 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2034 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2035 | /* The relocation is against a global symbol. */ | |
2036 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2037 | input_section, output_bfd, | |
2038 | error_message); | |
2039 | ||
2040 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2041 | input_section, output_bfd, error_message); | |
2042 | } | |
2043 | ||
2044 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2045 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2046 | any partnering high-part relocations as well. */ | |
2047 | ||
2048 | bfd_reloc_status_type | |
2049 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2050 | void *data, asection *input_section, | |
2051 | bfd *output_bfd, char **error_message) | |
2052 | { | |
2053 | bfd_vma vallo; | |
d6f16593 | 2054 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2055 | |
07515404 | 2056 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2057 | return bfd_reloc_outofrange; |
2058 | ||
d6f16593 MR |
2059 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2060 | location); | |
2061 | vallo = bfd_get_32 (abfd, location); | |
2062 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2063 | location); | |
2064 | ||
30ac9238 RS |
2065 | while (mips_hi16_list != NULL) |
2066 | { | |
2067 | bfd_reloc_status_type ret; | |
2068 | struct mips_hi16 *hi; | |
2069 | ||
2070 | hi = mips_hi16_list; | |
2071 | ||
738e5348 RS |
2072 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2073 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2074 | relocation (with a rightshift of 16). However, since GOT16 |
2075 | relocations can also be used with global symbols, their howto | |
2076 | has a rightshift of 0. */ | |
2077 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2078 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2079 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2080 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
30ac9238 RS |
2081 | |
2082 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2083 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2084 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2085 | ||
30ac9238 RS |
2086 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2087 | hi->input_section, output_bfd, | |
2088 | error_message); | |
2089 | if (ret != bfd_reloc_ok) | |
2090 | return ret; | |
2091 | ||
2092 | mips_hi16_list = hi->next; | |
2093 | free (hi); | |
2094 | } | |
2095 | ||
2096 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2097 | input_section, output_bfd, | |
2098 | error_message); | |
2099 | } | |
2100 | ||
2101 | /* A generic howto special_function. This calculates and installs the | |
2102 | relocation itself, thus avoiding the oft-discussed problems in | |
2103 | bfd_perform_relocation and bfd_install_relocation. */ | |
2104 | ||
2105 | bfd_reloc_status_type | |
2106 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2107 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2108 | asection *input_section, bfd *output_bfd, | |
2109 | char **error_message ATTRIBUTE_UNUSED) | |
2110 | { | |
2111 | bfd_signed_vma val; | |
2112 | bfd_reloc_status_type status; | |
2113 | bfd_boolean relocatable; | |
2114 | ||
2115 | relocatable = (output_bfd != NULL); | |
2116 | ||
07515404 | 2117 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2118 | return bfd_reloc_outofrange; |
2119 | ||
2120 | /* Build up the field adjustment in VAL. */ | |
2121 | val = 0; | |
2122 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2123 | { | |
2124 | /* Either we're calculating the final field value or we have a | |
2125 | relocation against a section symbol. Add in the section's | |
2126 | offset or address. */ | |
2127 | val += symbol->section->output_section->vma; | |
2128 | val += symbol->section->output_offset; | |
2129 | } | |
2130 | ||
2131 | if (!relocatable) | |
2132 | { | |
2133 | /* We're calculating the final field value. Add in the symbol's value | |
2134 | and, if pc-relative, subtract the address of the field itself. */ | |
2135 | val += symbol->value; | |
2136 | if (reloc_entry->howto->pc_relative) | |
2137 | { | |
2138 | val -= input_section->output_section->vma; | |
2139 | val -= input_section->output_offset; | |
2140 | val -= reloc_entry->address; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2145 | in the output file, and if the relocation uses a separate addend, | |
2146 | we just need to add VAL to that addend. Otherwise we need to add | |
2147 | VAL to the relocation field itself. */ | |
2148 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2149 | reloc_entry->addend += val; | |
2150 | else | |
2151 | { | |
d6f16593 MR |
2152 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2153 | ||
30ac9238 RS |
2154 | /* Add in the separate addend, if any. */ |
2155 | val += reloc_entry->addend; | |
2156 | ||
2157 | /* Add VAL to the relocation field. */ | |
d6f16593 MR |
2158 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2159 | location); | |
30ac9238 | 2160 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 MR |
2161 | location); |
2162 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2163 | location); | |
2164 | ||
30ac9238 RS |
2165 | if (status != bfd_reloc_ok) |
2166 | return status; | |
2167 | } | |
2168 | ||
2169 | if (relocatable) | |
2170 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2171 | |
2172 | return bfd_reloc_ok; | |
2173 | } | |
2174 | \f | |
2175 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2176 | on the equivalence of the two elements of the union. */ | |
2177 | ||
2178 | static void | |
9719ad41 RS |
2179 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2180 | Elf32_gptab *in) | |
b49e97c9 TS |
2181 | { |
2182 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2183 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2184 | } | |
2185 | ||
2186 | static void | |
9719ad41 RS |
2187 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2188 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2189 | { |
2190 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2191 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2192 | } | |
2193 | ||
2194 | static void | |
9719ad41 RS |
2195 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2196 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2197 | { |
2198 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2199 | H_PUT_32 (abfd, in->num, ex->num); | |
2200 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2201 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2202 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2203 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2204 | } | |
2205 | ||
2206 | static void | |
9719ad41 RS |
2207 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2208 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2209 | { |
2210 | unsigned long l; | |
2211 | ||
2212 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2213 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2214 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2215 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2216 | H_PUT_32 (abfd, l, ex->info); | |
2217 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2218 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2219 | } | |
b49e97c9 TS |
2220 | \f |
2221 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2222 | routines swap this structure in and out. They are used outside of | |
2223 | BFD, so they are globally visible. */ | |
2224 | ||
2225 | void | |
9719ad41 RS |
2226 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2227 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2228 | { |
2229 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2230 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2231 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2232 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2233 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2234 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2235 | } | |
2236 | ||
2237 | void | |
9719ad41 RS |
2238 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2239 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2240 | { |
2241 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2242 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2243 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2244 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2245 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2246 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2247 | } | |
2248 | ||
2249 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2250 | information in an Elf64_Reginfo structure. These routines swap | |
2251 | them in and out. They are globally visible because they are used | |
2252 | outside of BFD. These routines are here so that gas can call them | |
2253 | without worrying about whether the 64 bit ABI has been included. */ | |
2254 | ||
2255 | void | |
9719ad41 RS |
2256 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2257 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2258 | { |
2259 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2260 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2261 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2262 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2263 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2264 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2265 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2266 | } | |
2267 | ||
2268 | void | |
9719ad41 RS |
2269 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2270 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2271 | { |
2272 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2273 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2274 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2275 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2276 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2277 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2278 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2279 | } | |
2280 | ||
2281 | /* Swap in an options header. */ | |
2282 | ||
2283 | void | |
9719ad41 RS |
2284 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2285 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2286 | { |
2287 | in->kind = H_GET_8 (abfd, ex->kind); | |
2288 | in->size = H_GET_8 (abfd, ex->size); | |
2289 | in->section = H_GET_16 (abfd, ex->section); | |
2290 | in->info = H_GET_32 (abfd, ex->info); | |
2291 | } | |
2292 | ||
2293 | /* Swap out an options header. */ | |
2294 | ||
2295 | void | |
9719ad41 RS |
2296 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2297 | Elf_External_Options *ex) | |
b49e97c9 TS |
2298 | { |
2299 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2300 | H_PUT_8 (abfd, in->size, ex->size); | |
2301 | H_PUT_16 (abfd, in->section, ex->section); | |
2302 | H_PUT_32 (abfd, in->info, ex->info); | |
2303 | } | |
2304 | \f | |
2305 | /* This function is called via qsort() to sort the dynamic relocation | |
2306 | entries by increasing r_symndx value. */ | |
2307 | ||
2308 | static int | |
9719ad41 | 2309 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2310 | { |
947216bf AM |
2311 | Elf_Internal_Rela int_reloc1; |
2312 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2313 | int diff; |
b49e97c9 | 2314 | |
947216bf AM |
2315 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2316 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2317 | |
6870500c RS |
2318 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2319 | if (diff != 0) | |
2320 | return diff; | |
2321 | ||
2322 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2323 | return -1; | |
2324 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2325 | return 1; | |
2326 | return 0; | |
b49e97c9 TS |
2327 | } |
2328 | ||
f4416af6 AO |
2329 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2330 | ||
2331 | static int | |
7e3102a7 AM |
2332 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2333 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2334 | { |
7e3102a7 | 2335 | #ifdef BFD64 |
f4416af6 AO |
2336 | Elf_Internal_Rela int_reloc1[3]; |
2337 | Elf_Internal_Rela int_reloc2[3]; | |
2338 | ||
2339 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2340 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2341 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2342 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2343 | ||
6870500c RS |
2344 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2345 | return -1; | |
2346 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2347 | return 1; | |
2348 | ||
2349 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2350 | return -1; | |
2351 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2352 | return 1; | |
2353 | return 0; | |
7e3102a7 AM |
2354 | #else |
2355 | abort (); | |
2356 | #endif | |
f4416af6 AO |
2357 | } |
2358 | ||
2359 | ||
b49e97c9 TS |
2360 | /* This routine is used to write out ECOFF debugging external symbol |
2361 | information. It is called via mips_elf_link_hash_traverse. The | |
2362 | ECOFF external symbol information must match the ELF external | |
2363 | symbol information. Unfortunately, at this point we don't know | |
2364 | whether a symbol is required by reloc information, so the two | |
2365 | tables may wind up being different. We must sort out the external | |
2366 | symbol information before we can set the final size of the .mdebug | |
2367 | section, and we must set the size of the .mdebug section before we | |
2368 | can relocate any sections, and we can't know which symbols are | |
2369 | required by relocation until we relocate the sections. | |
2370 | Fortunately, it is relatively unlikely that any symbol will be | |
2371 | stripped but required by a reloc. In particular, it can not happen | |
2372 | when generating a final executable. */ | |
2373 | ||
b34976b6 | 2374 | static bfd_boolean |
9719ad41 | 2375 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2376 | { |
9719ad41 | 2377 | struct extsym_info *einfo = data; |
b34976b6 | 2378 | bfd_boolean strip; |
b49e97c9 TS |
2379 | asection *sec, *output_section; |
2380 | ||
2381 | if (h->root.root.type == bfd_link_hash_warning) | |
2382 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
2383 | ||
2384 | if (h->root.indx == -2) | |
b34976b6 | 2385 | strip = FALSE; |
f5385ebf | 2386 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2387 | || h->root.ref_dynamic |
2388 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2389 | && !h->root.def_regular |
2390 | && !h->root.ref_regular) | |
b34976b6 | 2391 | strip = TRUE; |
b49e97c9 TS |
2392 | else if (einfo->info->strip == strip_all |
2393 | || (einfo->info->strip == strip_some | |
2394 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2395 | h->root.root.root.string, | |
b34976b6 AM |
2396 | FALSE, FALSE) == NULL)) |
2397 | strip = TRUE; | |
b49e97c9 | 2398 | else |
b34976b6 | 2399 | strip = FALSE; |
b49e97c9 TS |
2400 | |
2401 | if (strip) | |
b34976b6 | 2402 | return TRUE; |
b49e97c9 TS |
2403 | |
2404 | if (h->esym.ifd == -2) | |
2405 | { | |
2406 | h->esym.jmptbl = 0; | |
2407 | h->esym.cobol_main = 0; | |
2408 | h->esym.weakext = 0; | |
2409 | h->esym.reserved = 0; | |
2410 | h->esym.ifd = ifdNil; | |
2411 | h->esym.asym.value = 0; | |
2412 | h->esym.asym.st = stGlobal; | |
2413 | ||
2414 | if (h->root.root.type == bfd_link_hash_undefined | |
2415 | || h->root.root.type == bfd_link_hash_undefweak) | |
2416 | { | |
2417 | const char *name; | |
2418 | ||
2419 | /* Use undefined class. Also, set class and type for some | |
2420 | special symbols. */ | |
2421 | name = h->root.root.root.string; | |
2422 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2423 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2424 | { | |
2425 | h->esym.asym.sc = scData; | |
2426 | h->esym.asym.st = stLabel; | |
2427 | h->esym.asym.value = 0; | |
2428 | } | |
2429 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2430 | { | |
2431 | h->esym.asym.sc = scAbs; | |
2432 | h->esym.asym.st = stLabel; | |
2433 | h->esym.asym.value = | |
2434 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2435 | } | |
4a14403c | 2436 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
2437 | { |
2438 | h->esym.asym.sc = scAbs; | |
2439 | h->esym.asym.st = stLabel; | |
2440 | h->esym.asym.value = elf_gp (einfo->abfd); | |
2441 | } | |
2442 | else | |
2443 | h->esym.asym.sc = scUndefined; | |
2444 | } | |
2445 | else if (h->root.root.type != bfd_link_hash_defined | |
2446 | && h->root.root.type != bfd_link_hash_defweak) | |
2447 | h->esym.asym.sc = scAbs; | |
2448 | else | |
2449 | { | |
2450 | const char *name; | |
2451 | ||
2452 | sec = h->root.root.u.def.section; | |
2453 | output_section = sec->output_section; | |
2454 | ||
2455 | /* When making a shared library and symbol h is the one from | |
2456 | the another shared library, OUTPUT_SECTION may be null. */ | |
2457 | if (output_section == NULL) | |
2458 | h->esym.asym.sc = scUndefined; | |
2459 | else | |
2460 | { | |
2461 | name = bfd_section_name (output_section->owner, output_section); | |
2462 | ||
2463 | if (strcmp (name, ".text") == 0) | |
2464 | h->esym.asym.sc = scText; | |
2465 | else if (strcmp (name, ".data") == 0) | |
2466 | h->esym.asym.sc = scData; | |
2467 | else if (strcmp (name, ".sdata") == 0) | |
2468 | h->esym.asym.sc = scSData; | |
2469 | else if (strcmp (name, ".rodata") == 0 | |
2470 | || strcmp (name, ".rdata") == 0) | |
2471 | h->esym.asym.sc = scRData; | |
2472 | else if (strcmp (name, ".bss") == 0) | |
2473 | h->esym.asym.sc = scBss; | |
2474 | else if (strcmp (name, ".sbss") == 0) | |
2475 | h->esym.asym.sc = scSBss; | |
2476 | else if (strcmp (name, ".init") == 0) | |
2477 | h->esym.asym.sc = scInit; | |
2478 | else if (strcmp (name, ".fini") == 0) | |
2479 | h->esym.asym.sc = scFini; | |
2480 | else | |
2481 | h->esym.asym.sc = scAbs; | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | h->esym.asym.reserved = 0; | |
2486 | h->esym.asym.index = indexNil; | |
2487 | } | |
2488 | ||
2489 | if (h->root.root.type == bfd_link_hash_common) | |
2490 | h->esym.asym.value = h->root.root.u.c.size; | |
2491 | else if (h->root.root.type == bfd_link_hash_defined | |
2492 | || h->root.root.type == bfd_link_hash_defweak) | |
2493 | { | |
2494 | if (h->esym.asym.sc == scCommon) | |
2495 | h->esym.asym.sc = scBss; | |
2496 | else if (h->esym.asym.sc == scSCommon) | |
2497 | h->esym.asym.sc = scSBss; | |
2498 | ||
2499 | sec = h->root.root.u.def.section; | |
2500 | output_section = sec->output_section; | |
2501 | if (output_section != NULL) | |
2502 | h->esym.asym.value = (h->root.root.u.def.value | |
2503 | + sec->output_offset | |
2504 | + output_section->vma); | |
2505 | else | |
2506 | h->esym.asym.value = 0; | |
2507 | } | |
33bb52fb | 2508 | else |
b49e97c9 TS |
2509 | { |
2510 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2511 | |
2512 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2513 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2514 | |
33bb52fb | 2515 | if (hd->needs_lazy_stub) |
b49e97c9 TS |
2516 | { |
2517 | /* Set type and value for a symbol with a function stub. */ | |
2518 | h->esym.asym.st = stProc; | |
2519 | sec = hd->root.root.u.def.section; | |
2520 | if (sec == NULL) | |
2521 | h->esym.asym.value = 0; | |
2522 | else | |
2523 | { | |
2524 | output_section = sec->output_section; | |
2525 | if (output_section != NULL) | |
2526 | h->esym.asym.value = (hd->root.plt.offset | |
2527 | + sec->output_offset | |
2528 | + output_section->vma); | |
2529 | else | |
2530 | h->esym.asym.value = 0; | |
2531 | } | |
b49e97c9 TS |
2532 | } |
2533 | } | |
2534 | ||
2535 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2536 | h->root.root.root.string, | |
2537 | &h->esym)) | |
2538 | { | |
b34976b6 AM |
2539 | einfo->failed = TRUE; |
2540 | return FALSE; | |
b49e97c9 TS |
2541 | } |
2542 | ||
b34976b6 | 2543 | return TRUE; |
b49e97c9 TS |
2544 | } |
2545 | ||
2546 | /* A comparison routine used to sort .gptab entries. */ | |
2547 | ||
2548 | static int | |
9719ad41 | 2549 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2550 | { |
9719ad41 RS |
2551 | const Elf32_gptab *a1 = p1; |
2552 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2553 | |
2554 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2555 | } | |
2556 | \f | |
b15e6682 | 2557 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2558 | |
2559 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2560 | hash number. */ | |
2561 | ||
2562 | static INLINE hashval_t | |
9719ad41 | 2563 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2564 | { |
2565 | #ifdef BFD64 | |
2566 | return addr + (addr >> 32); | |
2567 | #else | |
2568 | return addr; | |
2569 | #endif | |
2570 | } | |
2571 | ||
2572 | /* got_entries only match if they're identical, except for gotidx, so | |
2573 | use all fields to compute the hash, and compare the appropriate | |
2574 | union members. */ | |
2575 | ||
b15e6682 | 2576 | static hashval_t |
9719ad41 | 2577 | mips_elf_got_entry_hash (const void *entry_) |
b15e6682 AO |
2578 | { |
2579 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2580 | ||
38985a1c | 2581 | return entry->symndx |
0f20cc35 | 2582 | + ((entry->tls_type & GOT_TLS_LDM) << 17) |
f4416af6 | 2583 | + (! entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
38985a1c AO |
2584 | : entry->abfd->id |
2585 | + (entry->symndx >= 0 ? mips_elf_hash_bfd_vma (entry->d.addend) | |
2586 | : entry->d.h->root.root.root.hash)); | |
b15e6682 AO |
2587 | } |
2588 | ||
2589 | static int | |
9719ad41 | 2590 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
b15e6682 AO |
2591 | { |
2592 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2593 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2594 | ||
0f20cc35 DJ |
2595 | /* An LDM entry can only match another LDM entry. */ |
2596 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2597 | return 0; | |
2598 | ||
b15e6682 | 2599 | return e1->abfd == e2->abfd && e1->symndx == e2->symndx |
f4416af6 AO |
2600 | && (! e1->abfd ? e1->d.address == e2->d.address |
2601 | : e1->symndx >= 0 ? e1->d.addend == e2->d.addend | |
2602 | : e1->d.h == e2->d.h); | |
2603 | } | |
2604 | ||
2605 | /* multi_got_entries are still a match in the case of global objects, | |
2606 | even if the input bfd in which they're referenced differs, so the | |
2607 | hash computation and compare functions are adjusted | |
2608 | accordingly. */ | |
2609 | ||
2610 | static hashval_t | |
9719ad41 | 2611 | mips_elf_multi_got_entry_hash (const void *entry_) |
f4416af6 AO |
2612 | { |
2613 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2614 | ||
2615 | return entry->symndx | |
2616 | + (! entry->abfd | |
2617 | ? mips_elf_hash_bfd_vma (entry->d.address) | |
2618 | : entry->symndx >= 0 | |
0f20cc35 DJ |
2619 | ? ((entry->tls_type & GOT_TLS_LDM) |
2620 | ? (GOT_TLS_LDM << 17) | |
2621 | : (entry->abfd->id | |
2622 | + mips_elf_hash_bfd_vma (entry->d.addend))) | |
f4416af6 AO |
2623 | : entry->d.h->root.root.root.hash); |
2624 | } | |
2625 | ||
2626 | static int | |
9719ad41 | 2627 | mips_elf_multi_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2628 | { |
2629 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2630 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2631 | ||
0f20cc35 DJ |
2632 | /* Any two LDM entries match. */ |
2633 | if (e1->tls_type & e2->tls_type & GOT_TLS_LDM) | |
2634 | return 1; | |
2635 | ||
2636 | /* Nothing else matches an LDM entry. */ | |
2637 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2638 | return 0; | |
2639 | ||
f4416af6 AO |
2640 | return e1->symndx == e2->symndx |
2641 | && (e1->symndx >= 0 ? e1->abfd == e2->abfd && e1->d.addend == e2->d.addend | |
2642 | : e1->abfd == NULL || e2->abfd == NULL | |
2643 | ? e1->abfd == e2->abfd && e1->d.address == e2->d.address | |
2644 | : e1->d.h == e2->d.h); | |
b15e6682 | 2645 | } |
c224138d RS |
2646 | |
2647 | static hashval_t | |
2648 | mips_got_page_entry_hash (const void *entry_) | |
2649 | { | |
2650 | const struct mips_got_page_entry *entry; | |
2651 | ||
2652 | entry = (const struct mips_got_page_entry *) entry_; | |
2653 | return entry->abfd->id + entry->symndx; | |
2654 | } | |
2655 | ||
2656 | static int | |
2657 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2658 | { | |
2659 | const struct mips_got_page_entry *entry1, *entry2; | |
2660 | ||
2661 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2662 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
2663 | return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx; | |
2664 | } | |
b15e6682 | 2665 | \f |
0a44bf69 RS |
2666 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2667 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2668 | if creation fails. */ | |
f4416af6 AO |
2669 | |
2670 | static asection * | |
0a44bf69 | 2671 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2672 | { |
0a44bf69 | 2673 | const char *dname; |
f4416af6 | 2674 | asection *sreloc; |
0a44bf69 | 2675 | bfd *dynobj; |
f4416af6 | 2676 | |
0a44bf69 RS |
2677 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2678 | dynobj = elf_hash_table (info)->dynobj; | |
f4416af6 AO |
2679 | sreloc = bfd_get_section_by_name (dynobj, dname); |
2680 | if (sreloc == NULL && create_p) | |
2681 | { | |
3496cb2a L |
2682 | sreloc = bfd_make_section_with_flags (dynobj, dname, |
2683 | (SEC_ALLOC | |
2684 | | SEC_LOAD | |
2685 | | SEC_HAS_CONTENTS | |
2686 | | SEC_IN_MEMORY | |
2687 | | SEC_LINKER_CREATED | |
2688 | | SEC_READONLY)); | |
f4416af6 | 2689 | if (sreloc == NULL |
f4416af6 | 2690 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2691 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2692 | return NULL; |
2693 | } | |
2694 | return sreloc; | |
2695 | } | |
2696 | ||
0f20cc35 DJ |
2697 | /* Count the number of relocations needed for a TLS GOT entry, with |
2698 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2699 | is NULL). */ | |
2700 | ||
2701 | static int | |
2702 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2703 | struct elf_link_hash_entry *h) | |
2704 | { | |
2705 | int indx = 0; | |
2706 | int ret = 0; | |
2707 | bfd_boolean need_relocs = FALSE; | |
2708 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2709 | ||
2710 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2711 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
2712 | indx = h->dynindx; | |
2713 | ||
2714 | if ((info->shared || indx != 0) | |
2715 | && (h == NULL | |
2716 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2717 | || h->root.type != bfd_link_hash_undefweak)) | |
2718 | need_relocs = TRUE; | |
2719 | ||
2720 | if (!need_relocs) | |
2721 | return FALSE; | |
2722 | ||
2723 | if (tls_type & GOT_TLS_GD) | |
2724 | { | |
2725 | ret++; | |
2726 | if (indx != 0) | |
2727 | ret++; | |
2728 | } | |
2729 | ||
2730 | if (tls_type & GOT_TLS_IE) | |
2731 | ret++; | |
2732 | ||
2733 | if ((tls_type & GOT_TLS_LDM) && info->shared) | |
2734 | ret++; | |
2735 | ||
2736 | return ret; | |
2737 | } | |
2738 | ||
2739 | /* Count the number of TLS relocations required for the GOT entry in | |
2740 | ARG1, if it describes a local symbol. */ | |
2741 | ||
2742 | static int | |
2743 | mips_elf_count_local_tls_relocs (void **arg1, void *arg2) | |
2744 | { | |
2745 | struct mips_got_entry *entry = * (struct mips_got_entry **) arg1; | |
2746 | struct mips_elf_count_tls_arg *arg = arg2; | |
2747 | ||
2748 | if (entry->abfd != NULL && entry->symndx != -1) | |
2749 | arg->needed += mips_tls_got_relocs (arg->info, entry->tls_type, NULL); | |
2750 | ||
2751 | return 1; | |
2752 | } | |
2753 | ||
2754 | /* Count the number of TLS GOT entries required for the global (or | |
2755 | forced-local) symbol in ARG1. */ | |
2756 | ||
2757 | static int | |
2758 | mips_elf_count_global_tls_entries (void *arg1, void *arg2) | |
2759 | { | |
2760 | struct mips_elf_link_hash_entry *hm | |
2761 | = (struct mips_elf_link_hash_entry *) arg1; | |
2762 | struct mips_elf_count_tls_arg *arg = arg2; | |
2763 | ||
2764 | if (hm->tls_type & GOT_TLS_GD) | |
2765 | arg->needed += 2; | |
2766 | if (hm->tls_type & GOT_TLS_IE) | |
2767 | arg->needed += 1; | |
2768 | ||
2769 | return 1; | |
2770 | } | |
2771 | ||
2772 | /* Count the number of TLS relocations required for the global (or | |
2773 | forced-local) symbol in ARG1. */ | |
2774 | ||
2775 | static int | |
2776 | mips_elf_count_global_tls_relocs (void *arg1, void *arg2) | |
2777 | { | |
2778 | struct mips_elf_link_hash_entry *hm | |
2779 | = (struct mips_elf_link_hash_entry *) arg1; | |
2780 | struct mips_elf_count_tls_arg *arg = arg2; | |
2781 | ||
2782 | arg->needed += mips_tls_got_relocs (arg->info, hm->tls_type, &hm->root); | |
2783 | ||
2784 | return 1; | |
2785 | } | |
2786 | ||
2787 | /* Output a simple dynamic relocation into SRELOC. */ | |
2788 | ||
2789 | static void | |
2790 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
2791 | asection *sreloc, | |
861fb55a | 2792 | unsigned long reloc_index, |
0f20cc35 DJ |
2793 | unsigned long indx, |
2794 | int r_type, | |
2795 | bfd_vma offset) | |
2796 | { | |
2797 | Elf_Internal_Rela rel[3]; | |
2798 | ||
2799 | memset (rel, 0, sizeof (rel)); | |
2800 | ||
2801 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
2802 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
2803 | ||
2804 | if (ABI_64_P (output_bfd)) | |
2805 | { | |
2806 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
2807 | (output_bfd, &rel[0], | |
2808 | (sreloc->contents | |
861fb55a | 2809 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
2810 | } |
2811 | else | |
2812 | bfd_elf32_swap_reloc_out | |
2813 | (output_bfd, &rel[0], | |
2814 | (sreloc->contents | |
861fb55a | 2815 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
2816 | } |
2817 | ||
2818 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
2819 | ||
2820 | static void | |
2821 | mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset, | |
2822 | unsigned char *tls_type_p, | |
2823 | struct bfd_link_info *info, | |
2824 | struct mips_elf_link_hash_entry *h, | |
2825 | bfd_vma value) | |
2826 | { | |
23cc69b6 | 2827 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
2828 | int indx; |
2829 | asection *sreloc, *sgot; | |
2830 | bfd_vma offset, offset2; | |
0f20cc35 DJ |
2831 | bfd_boolean need_relocs = FALSE; |
2832 | ||
23cc69b6 RS |
2833 | htab = mips_elf_hash_table (info); |
2834 | sgot = htab->sgot; | |
0f20cc35 DJ |
2835 | |
2836 | indx = 0; | |
2837 | if (h != NULL) | |
2838 | { | |
2839 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2840 | ||
2841 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
2842 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
2843 | indx = h->root.dynindx; | |
2844 | } | |
2845 | ||
2846 | if (*tls_type_p & GOT_TLS_DONE) | |
2847 | return; | |
2848 | ||
2849 | if ((info->shared || indx != 0) | |
2850 | && (h == NULL | |
2851 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
2852 | || h->root.type != bfd_link_hash_undefweak)) | |
2853 | need_relocs = TRUE; | |
2854 | ||
2855 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
2856 | be defined at all; assume that the value doesn't matter in that | |
2857 | case. Otherwise complain if we would use the value. */ | |
2858 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
2859 | || h->root.root.type == bfd_link_hash_undefweak); | |
2860 | ||
2861 | /* Emit necessary relocations. */ | |
0a44bf69 | 2862 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
0f20cc35 DJ |
2863 | |
2864 | /* General Dynamic. */ | |
2865 | if (*tls_type_p & GOT_TLS_GD) | |
2866 | { | |
2867 | offset = got_offset; | |
2868 | offset2 = offset + MIPS_ELF_GOT_SIZE (abfd); | |
2869 | ||
2870 | if (need_relocs) | |
2871 | { | |
2872 | mips_elf_output_dynamic_relocation | |
861fb55a | 2873 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2874 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
2875 | sgot->output_offset + sgot->output_section->vma + offset); | |
2876 | ||
2877 | if (indx) | |
2878 | mips_elf_output_dynamic_relocation | |
861fb55a | 2879 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2880 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
2881 | sgot->output_offset + sgot->output_section->vma + offset2); | |
2882 | else | |
2883 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2884 | sgot->contents + offset2); | |
2885 | } | |
2886 | else | |
2887 | { | |
2888 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2889 | sgot->contents + offset); | |
2890 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2891 | sgot->contents + offset2); | |
2892 | } | |
2893 | ||
2894 | got_offset += 2 * MIPS_ELF_GOT_SIZE (abfd); | |
2895 | } | |
2896 | ||
2897 | /* Initial Exec model. */ | |
2898 | if (*tls_type_p & GOT_TLS_IE) | |
2899 | { | |
2900 | offset = got_offset; | |
2901 | ||
2902 | if (need_relocs) | |
2903 | { | |
2904 | if (indx == 0) | |
2905 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
2906 | sgot->contents + offset); | |
2907 | else | |
2908 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2909 | sgot->contents + offset); | |
2910 | ||
2911 | mips_elf_output_dynamic_relocation | |
861fb55a | 2912 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2913 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
2914 | sgot->output_offset + sgot->output_section->vma + offset); | |
2915 | } | |
2916 | else | |
2917 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
2918 | sgot->contents + offset); | |
2919 | } | |
2920 | ||
2921 | if (*tls_type_p & GOT_TLS_LDM) | |
2922 | { | |
2923 | /* The initial offset is zero, and the LD offsets will include the | |
2924 | bias by DTP_OFFSET. */ | |
2925 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2926 | sgot->contents + got_offset | |
2927 | + MIPS_ELF_GOT_SIZE (abfd)); | |
2928 | ||
2929 | if (!info->shared) | |
2930 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2931 | sgot->contents + got_offset); | |
2932 | else | |
2933 | mips_elf_output_dynamic_relocation | |
861fb55a | 2934 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2935 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
2936 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
2937 | } | |
2938 | ||
2939 | *tls_type_p |= GOT_TLS_DONE; | |
2940 | } | |
2941 | ||
2942 | /* Return the GOT index to use for a relocation of type R_TYPE against | |
2943 | a symbol accessed using TLS_TYPE models. The GOT entries for this | |
2944 | symbol in this GOT start at GOT_INDEX. This function initializes the | |
2945 | GOT entries and corresponding relocations. */ | |
2946 | ||
2947 | static bfd_vma | |
2948 | mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type, | |
2949 | int r_type, struct bfd_link_info *info, | |
2950 | struct mips_elf_link_hash_entry *h, bfd_vma symbol) | |
2951 | { | |
2952 | BFD_ASSERT (r_type == R_MIPS_TLS_GOTTPREL || r_type == R_MIPS_TLS_GD | |
2953 | || r_type == R_MIPS_TLS_LDM); | |
2954 | ||
2955 | mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol); | |
2956 | ||
2957 | if (r_type == R_MIPS_TLS_GOTTPREL) | |
2958 | { | |
2959 | BFD_ASSERT (*tls_type & GOT_TLS_IE); | |
2960 | if (*tls_type & GOT_TLS_GD) | |
2961 | return got_index + 2 * MIPS_ELF_GOT_SIZE (abfd); | |
2962 | else | |
2963 | return got_index; | |
2964 | } | |
2965 | ||
2966 | if (r_type == R_MIPS_TLS_GD) | |
2967 | { | |
2968 | BFD_ASSERT (*tls_type & GOT_TLS_GD); | |
2969 | return got_index; | |
2970 | } | |
2971 | ||
2972 | if (r_type == R_MIPS_TLS_LDM) | |
2973 | { | |
2974 | BFD_ASSERT (*tls_type & GOT_TLS_LDM); | |
2975 | return got_index; | |
2976 | } | |
2977 | ||
2978 | return got_index; | |
2979 | } | |
2980 | ||
0a44bf69 RS |
2981 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
2982 | for global symbol H. .got.plt comes before the GOT, so the offset | |
2983 | will be negative. */ | |
2984 | ||
2985 | static bfd_vma | |
2986 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
2987 | struct elf_link_hash_entry *h) | |
2988 | { | |
2989 | bfd_vma plt_index, got_address, got_value; | |
2990 | struct mips_elf_link_hash_table *htab; | |
2991 | ||
2992 | htab = mips_elf_hash_table (info); | |
2993 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2994 | ||
861fb55a DJ |
2995 | /* This function only works for VxWorks, because a non-VxWorks .got.plt |
2996 | section starts with reserved entries. */ | |
2997 | BFD_ASSERT (htab->is_vxworks); | |
2998 | ||
0a44bf69 RS |
2999 | /* Calculate the index of the symbol's PLT entry. */ |
3000 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
3001 | ||
3002 | /* Calculate the address of the associated .got.plt entry. */ | |
3003 | got_address = (htab->sgotplt->output_section->vma | |
3004 | + htab->sgotplt->output_offset | |
3005 | + plt_index * 4); | |
3006 | ||
3007 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3008 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3009 | + htab->root.hgot->root.u.def.section->output_offset | |
3010 | + htab->root.hgot->root.u.def.value); | |
3011 | ||
3012 | return got_address - got_value; | |
3013 | } | |
3014 | ||
5c18022e | 3015 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3016 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3017 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3018 | offset can be found. */ | |
b49e97c9 TS |
3019 | |
3020 | static bfd_vma | |
9719ad41 | 3021 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3022 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3023 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3024 | { |
a8028dd0 | 3025 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3026 | struct mips_got_entry *entry; |
b49e97c9 | 3027 | |
a8028dd0 RS |
3028 | htab = mips_elf_hash_table (info); |
3029 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, | |
3030 | r_symndx, h, r_type); | |
0f20cc35 | 3031 | if (!entry) |
b15e6682 | 3032 | return MINUS_ONE; |
0f20cc35 DJ |
3033 | |
3034 | if (TLS_RELOC_P (r_type)) | |
ead49a57 | 3035 | { |
a8028dd0 | 3036 | if (entry->symndx == -1 && htab->got_info->next == NULL) |
ead49a57 RS |
3037 | /* A type (3) entry in the single-GOT case. We use the symbol's |
3038 | hash table entry to track the index. */ | |
3039 | return mips_tls_got_index (abfd, h->tls_got_offset, &h->tls_type, | |
3040 | r_type, info, h, value); | |
3041 | else | |
3042 | return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type, | |
3043 | r_type, info, h, value); | |
3044 | } | |
0f20cc35 DJ |
3045 | else |
3046 | return entry->gotidx; | |
b49e97c9 TS |
3047 | } |
3048 | ||
3049 | /* Returns the GOT index for the global symbol indicated by H. */ | |
3050 | ||
3051 | static bfd_vma | |
0f20cc35 DJ |
3052 | mips_elf_global_got_index (bfd *abfd, bfd *ibfd, struct elf_link_hash_entry *h, |
3053 | int r_type, struct bfd_link_info *info) | |
b49e97c9 | 3054 | { |
a8028dd0 | 3055 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 3056 | bfd_vma index; |
f4416af6 | 3057 | struct mips_got_info *g, *gg; |
d0c7ff07 | 3058 | long global_got_dynindx = 0; |
b49e97c9 | 3059 | |
a8028dd0 RS |
3060 | htab = mips_elf_hash_table (info); |
3061 | gg = g = htab->got_info; | |
f4416af6 AO |
3062 | if (g->bfd2got && ibfd) |
3063 | { | |
3064 | struct mips_got_entry e, *p; | |
143d77c5 | 3065 | |
f4416af6 AO |
3066 | BFD_ASSERT (h->dynindx >= 0); |
3067 | ||
3068 | g = mips_elf_got_for_ibfd (g, ibfd); | |
0f20cc35 | 3069 | if (g->next != gg || TLS_RELOC_P (r_type)) |
f4416af6 AO |
3070 | { |
3071 | e.abfd = ibfd; | |
3072 | e.symndx = -1; | |
3073 | e.d.h = (struct mips_elf_link_hash_entry *)h; | |
0f20cc35 | 3074 | e.tls_type = 0; |
f4416af6 | 3075 | |
9719ad41 | 3076 | p = htab_find (g->got_entries, &e); |
f4416af6 AO |
3077 | |
3078 | BFD_ASSERT (p->gotidx > 0); | |
0f20cc35 DJ |
3079 | |
3080 | if (TLS_RELOC_P (r_type)) | |
3081 | { | |
3082 | bfd_vma value = MINUS_ONE; | |
3083 | if ((h->root.type == bfd_link_hash_defined | |
3084 | || h->root.type == bfd_link_hash_defweak) | |
3085 | && h->root.u.def.section->output_section) | |
3086 | value = (h->root.u.def.value | |
3087 | + h->root.u.def.section->output_offset | |
3088 | + h->root.u.def.section->output_section->vma); | |
3089 | ||
3090 | return mips_tls_got_index (abfd, p->gotidx, &p->tls_type, r_type, | |
3091 | info, e.d.h, value); | |
3092 | } | |
3093 | else | |
3094 | return p->gotidx; | |
f4416af6 AO |
3095 | } |
3096 | } | |
3097 | ||
3098 | if (gg->global_gotsym != NULL) | |
3099 | global_got_dynindx = gg->global_gotsym->dynindx; | |
b49e97c9 | 3100 | |
0f20cc35 DJ |
3101 | if (TLS_RELOC_P (r_type)) |
3102 | { | |
3103 | struct mips_elf_link_hash_entry *hm | |
3104 | = (struct mips_elf_link_hash_entry *) h; | |
3105 | bfd_vma value = MINUS_ONE; | |
3106 | ||
3107 | if ((h->root.type == bfd_link_hash_defined | |
3108 | || h->root.type == bfd_link_hash_defweak) | |
3109 | && h->root.u.def.section->output_section) | |
3110 | value = (h->root.u.def.value | |
3111 | + h->root.u.def.section->output_offset | |
3112 | + h->root.u.def.section->output_section->vma); | |
3113 | ||
3114 | index = mips_tls_got_index (abfd, hm->tls_got_offset, &hm->tls_type, | |
3115 | r_type, info, hm, value); | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | /* Once we determine the global GOT entry with the lowest dynamic | |
3120 | symbol table index, we must put all dynamic symbols with greater | |
3121 | indices into the GOT. That makes it easy to calculate the GOT | |
3122 | offset. */ | |
3123 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
3124 | index = ((h->dynindx - global_got_dynindx + g->local_gotno) | |
3125 | * MIPS_ELF_GOT_SIZE (abfd)); | |
3126 | } | |
a8028dd0 | 3127 | BFD_ASSERT (index < htab->sgot->size); |
b49e97c9 TS |
3128 | |
3129 | return index; | |
3130 | } | |
3131 | ||
5c18022e RS |
3132 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3133 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3134 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3135 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3136 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3137 | |
3138 | static bfd_vma | |
9719ad41 | 3139 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3140 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3141 | { |
0a44bf69 | 3142 | bfd_vma page, index; |
b15e6682 | 3143 | struct mips_got_entry *entry; |
b49e97c9 | 3144 | |
0a44bf69 | 3145 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3146 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3147 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3148 | |
b15e6682 AO |
3149 | if (!entry) |
3150 | return MINUS_ONE; | |
143d77c5 | 3151 | |
b15e6682 | 3152 | index = entry->gotidx; |
b49e97c9 TS |
3153 | |
3154 | if (offsetp) | |
f4416af6 | 3155 | *offsetp = value - entry->d.address; |
b49e97c9 TS |
3156 | |
3157 | return index; | |
3158 | } | |
3159 | ||
738e5348 | 3160 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
0a44bf69 RS |
3161 | EXTERNAL is true if the relocation was against a global symbol |
3162 | that has been forced local. */ | |
b49e97c9 TS |
3163 | |
3164 | static bfd_vma | |
9719ad41 | 3165 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3166 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3167 | { |
b15e6682 | 3168 | struct mips_got_entry *entry; |
b49e97c9 | 3169 | |
0a44bf69 RS |
3170 | /* GOT16 relocations against local symbols are followed by a LO16 |
3171 | relocation; those against global symbols are not. Thus if the | |
3172 | symbol was originally local, the GOT16 relocation should load the | |
3173 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3174 | if (! external) |
0a44bf69 | 3175 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3176 | |
738e5348 RS |
3177 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3178 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3179 | same in all cases. */ | |
a8028dd0 RS |
3180 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3181 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3182 | if (entry) |
3183 | return entry->gotidx; | |
3184 | else | |
3185 | return MINUS_ONE; | |
b49e97c9 TS |
3186 | } |
3187 | ||
3188 | /* Returns the offset for the entry at the INDEXth position | |
3189 | in the GOT. */ | |
3190 | ||
3191 | static bfd_vma | |
a8028dd0 | 3192 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
9719ad41 | 3193 | bfd *input_bfd, bfd_vma index) |
b49e97c9 | 3194 | { |
a8028dd0 | 3195 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3196 | asection *sgot; |
3197 | bfd_vma gp; | |
3198 | ||
a8028dd0 RS |
3199 | htab = mips_elf_hash_table (info); |
3200 | sgot = htab->sgot; | |
f4416af6 | 3201 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3202 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3203 | |
f4416af6 | 3204 | return sgot->output_section->vma + sgot->output_offset + index - gp; |
b49e97c9 TS |
3205 | } |
3206 | ||
0a44bf69 RS |
3207 | /* Create and return a local GOT entry for VALUE, which was calculated |
3208 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3209 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3210 | instead. */ | |
b49e97c9 | 3211 | |
b15e6682 | 3212 | static struct mips_got_entry * |
0a44bf69 | 3213 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3214 | bfd *ibfd, bfd_vma value, |
5c18022e | 3215 | unsigned long r_symndx, |
0f20cc35 DJ |
3216 | struct mips_elf_link_hash_entry *h, |
3217 | int r_type) | |
b49e97c9 | 3218 | { |
b15e6682 | 3219 | struct mips_got_entry entry, **loc; |
f4416af6 | 3220 | struct mips_got_info *g; |
0a44bf69 RS |
3221 | struct mips_elf_link_hash_table *htab; |
3222 | ||
3223 | htab = mips_elf_hash_table (info); | |
b15e6682 | 3224 | |
f4416af6 AO |
3225 | entry.abfd = NULL; |
3226 | entry.symndx = -1; | |
3227 | entry.d.address = value; | |
0f20cc35 | 3228 | entry.tls_type = 0; |
f4416af6 | 3229 | |
a8028dd0 | 3230 | g = mips_elf_got_for_ibfd (htab->got_info, ibfd); |
f4416af6 AO |
3231 | if (g == NULL) |
3232 | { | |
a8028dd0 | 3233 | g = mips_elf_got_for_ibfd (htab->got_info, abfd); |
f4416af6 AO |
3234 | BFD_ASSERT (g != NULL); |
3235 | } | |
b15e6682 | 3236 | |
0f20cc35 DJ |
3237 | /* We might have a symbol, H, if it has been forced local. Use the |
3238 | global entry then. It doesn't matter whether an entry is local | |
3239 | or global for TLS, since the dynamic linker does not | |
3240 | automatically relocate TLS GOT entries. */ | |
a008ac03 | 3241 | BFD_ASSERT (h == NULL || h->root.forced_local); |
0f20cc35 DJ |
3242 | if (TLS_RELOC_P (r_type)) |
3243 | { | |
3244 | struct mips_got_entry *p; | |
3245 | ||
3246 | entry.abfd = ibfd; | |
3247 | if (r_type == R_MIPS_TLS_LDM) | |
3248 | { | |
3249 | entry.tls_type = GOT_TLS_LDM; | |
3250 | entry.symndx = 0; | |
3251 | entry.d.addend = 0; | |
3252 | } | |
3253 | else if (h == NULL) | |
3254 | { | |
3255 | entry.symndx = r_symndx; | |
3256 | entry.d.addend = 0; | |
3257 | } | |
3258 | else | |
3259 | entry.d.h = h; | |
3260 | ||
3261 | p = (struct mips_got_entry *) | |
3262 | htab_find (g->got_entries, &entry); | |
3263 | ||
3264 | BFD_ASSERT (p); | |
3265 | return p; | |
3266 | } | |
3267 | ||
b15e6682 AO |
3268 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, |
3269 | INSERT); | |
3270 | if (*loc) | |
3271 | return *loc; | |
143d77c5 | 3272 | |
b15e6682 | 3273 | entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; |
0f20cc35 | 3274 | entry.tls_type = 0; |
b15e6682 AO |
3275 | |
3276 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3277 | ||
3278 | if (! *loc) | |
3279 | return NULL; | |
143d77c5 | 3280 | |
b15e6682 AO |
3281 | memcpy (*loc, &entry, sizeof entry); |
3282 | ||
8275b357 | 3283 | if (g->assigned_gotno > g->local_gotno) |
b49e97c9 | 3284 | { |
f4416af6 | 3285 | (*loc)->gotidx = -1; |
b49e97c9 TS |
3286 | /* We didn't allocate enough space in the GOT. */ |
3287 | (*_bfd_error_handler) | |
3288 | (_("not enough GOT space for local GOT entries")); | |
3289 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3290 | return NULL; |
b49e97c9 TS |
3291 | } |
3292 | ||
3293 | MIPS_ELF_PUT_WORD (abfd, value, | |
a8028dd0 | 3294 | (htab->sgot->contents + entry.gotidx)); |
b15e6682 | 3295 | |
5c18022e | 3296 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3297 | if (htab->is_vxworks) |
3298 | { | |
3299 | Elf_Internal_Rela outrel; | |
5c18022e | 3300 | asection *s; |
0a44bf69 RS |
3301 | bfd_byte *loc; |
3302 | bfd_vma got_address; | |
0a44bf69 RS |
3303 | |
3304 | s = mips_elf_rel_dyn_section (info, FALSE); | |
a8028dd0 RS |
3305 | got_address = (htab->sgot->output_section->vma |
3306 | + htab->sgot->output_offset | |
0a44bf69 RS |
3307 | + entry.gotidx); |
3308 | ||
3309 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
3310 | outrel.r_offset = got_address; | |
5c18022e RS |
3311 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3312 | outrel.r_addend = value; | |
0a44bf69 RS |
3313 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); |
3314 | } | |
3315 | ||
b15e6682 | 3316 | return *loc; |
b49e97c9 TS |
3317 | } |
3318 | ||
d4596a51 RS |
3319 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3320 | The number might be exact or a worst-case estimate, depending on how | |
3321 | much information is available to elf_backend_omit_section_dynsym at | |
3322 | the current linking stage. */ | |
3323 | ||
3324 | static bfd_size_type | |
3325 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3326 | { | |
3327 | bfd_size_type count; | |
3328 | ||
3329 | count = 0; | |
3330 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
3331 | { | |
3332 | asection *p; | |
3333 | const struct elf_backend_data *bed; | |
3334 | ||
3335 | bed = get_elf_backend_data (output_bfd); | |
3336 | for (p = output_bfd->sections; p ; p = p->next) | |
3337 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3338 | && (p->flags & SEC_ALLOC) != 0 | |
3339 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
3340 | ++count; | |
3341 | } | |
3342 | return count; | |
3343 | } | |
3344 | ||
b49e97c9 | 3345 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3346 | appear towards the end. */ |
b49e97c9 | 3347 | |
b34976b6 | 3348 | static bfd_boolean |
d4596a51 | 3349 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3350 | { |
a8028dd0 | 3351 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3352 | struct mips_elf_hash_sort_data hsd; |
3353 | struct mips_got_info *g; | |
b49e97c9 | 3354 | |
d4596a51 RS |
3355 | if (elf_hash_table (info)->dynsymcount == 0) |
3356 | return TRUE; | |
3357 | ||
a8028dd0 RS |
3358 | htab = mips_elf_hash_table (info); |
3359 | g = htab->got_info; | |
d4596a51 RS |
3360 | if (g == NULL) |
3361 | return TRUE; | |
f4416af6 | 3362 | |
b49e97c9 | 3363 | hsd.low = NULL; |
23cc69b6 RS |
3364 | hsd.max_unref_got_dynindx |
3365 | = hsd.min_got_dynindx | |
3366 | = (elf_hash_table (info)->dynsymcount - g->reloc_only_gotno); | |
d4596a51 | 3367 | hsd.max_non_got_dynindx = count_section_dynsyms (abfd, info) + 1; |
b49e97c9 TS |
3368 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
3369 | elf_hash_table (info)), | |
3370 | mips_elf_sort_hash_table_f, | |
3371 | &hsd); | |
3372 | ||
3373 | /* There should have been enough room in the symbol table to | |
44c410de | 3374 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 3375 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
d4596a51 RS |
3376 | BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx |
3377 | == elf_hash_table (info)->dynsymcount); | |
3378 | BFD_ASSERT (elf_hash_table (info)->dynsymcount - hsd.min_got_dynindx | |
3379 | == g->global_gotno); | |
b49e97c9 TS |
3380 | |
3381 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3382 | table index in the GOT. */ | |
b49e97c9 TS |
3383 | g->global_gotsym = hsd.low; |
3384 | ||
b34976b6 | 3385 | return TRUE; |
b49e97c9 TS |
3386 | } |
3387 | ||
3388 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3389 | index. Otherwise, assign it the lowest available dynamic | |
3390 | index. */ | |
3391 | ||
b34976b6 | 3392 | static bfd_boolean |
9719ad41 | 3393 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3394 | { |
9719ad41 | 3395 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 TS |
3396 | |
3397 | if (h->root.root.type == bfd_link_hash_warning) | |
3398 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3399 | ||
3400 | /* Symbols without dynamic symbol table entries aren't interesting | |
3401 | at all. */ | |
3402 | if (h->root.dynindx == -1) | |
b34976b6 | 3403 | return TRUE; |
b49e97c9 | 3404 | |
634835ae | 3405 | switch (h->global_got_area) |
f4416af6 | 3406 | { |
634835ae RS |
3407 | case GGA_NONE: |
3408 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
3409 | break; | |
0f20cc35 | 3410 | |
634835ae | 3411 | case GGA_NORMAL: |
0f20cc35 DJ |
3412 | BFD_ASSERT (h->tls_type == GOT_NORMAL); |
3413 | ||
b49e97c9 TS |
3414 | h->root.dynindx = --hsd->min_got_dynindx; |
3415 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3416 | break; |
3417 | ||
3418 | case GGA_RELOC_ONLY: | |
3419 | BFD_ASSERT (h->tls_type == GOT_NORMAL); | |
3420 | ||
3421 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) | |
3422 | hsd->low = (struct elf_link_hash_entry *) h; | |
3423 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3424 | break; | |
b49e97c9 TS |
3425 | } |
3426 | ||
b34976b6 | 3427 | return TRUE; |
b49e97c9 TS |
3428 | } |
3429 | ||
3430 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
3431 | symbol table index lower than any we've seen to date, record it for | |
3432 | posterity. */ | |
3433 | ||
b34976b6 | 3434 | static bfd_boolean |
9719ad41 RS |
3435 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3436 | bfd *abfd, struct bfd_link_info *info, | |
0f20cc35 | 3437 | unsigned char tls_flag) |
b49e97c9 | 3438 | { |
a8028dd0 | 3439 | struct mips_elf_link_hash_table *htab; |
634835ae | 3440 | struct mips_elf_link_hash_entry *hmips; |
f4416af6 | 3441 | struct mips_got_entry entry, **loc; |
a8028dd0 RS |
3442 | struct mips_got_info *g; |
3443 | ||
3444 | htab = mips_elf_hash_table (info); | |
634835ae | 3445 | hmips = (struct mips_elf_link_hash_entry *) h; |
f4416af6 | 3446 | |
b49e97c9 TS |
3447 | /* A global symbol in the GOT must also be in the dynamic symbol |
3448 | table. */ | |
7c5fcef7 L |
3449 | if (h->dynindx == -1) |
3450 | { | |
3451 | switch (ELF_ST_VISIBILITY (h->other)) | |
3452 | { | |
3453 | case STV_INTERNAL: | |
3454 | case STV_HIDDEN: | |
33bb52fb | 3455 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3456 | break; |
3457 | } | |
c152c796 | 3458 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3459 | return FALSE; |
7c5fcef7 | 3460 | } |
b49e97c9 | 3461 | |
86324f90 | 3462 | /* Make sure we have a GOT to put this entry into. */ |
a8028dd0 | 3463 | g = htab->got_info; |
86324f90 EC |
3464 | BFD_ASSERT (g != NULL); |
3465 | ||
f4416af6 AO |
3466 | entry.abfd = abfd; |
3467 | entry.symndx = -1; | |
3468 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
0f20cc35 | 3469 | entry.tls_type = 0; |
f4416af6 AO |
3470 | |
3471 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, | |
3472 | INSERT); | |
3473 | ||
b49e97c9 TS |
3474 | /* If we've already marked this entry as needing GOT space, we don't |
3475 | need to do it again. */ | |
f4416af6 | 3476 | if (*loc) |
0f20cc35 DJ |
3477 | { |
3478 | (*loc)->tls_type |= tls_flag; | |
3479 | return TRUE; | |
3480 | } | |
f4416af6 AO |
3481 | |
3482 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3483 | ||
3484 | if (! *loc) | |
3485 | return FALSE; | |
143d77c5 | 3486 | |
f4416af6 | 3487 | entry.gotidx = -1; |
0f20cc35 DJ |
3488 | entry.tls_type = tls_flag; |
3489 | ||
f4416af6 AO |
3490 | memcpy (*loc, &entry, sizeof entry); |
3491 | ||
0f20cc35 | 3492 | if (tls_flag == 0) |
634835ae | 3493 | hmips->global_got_area = GGA_NORMAL; |
b49e97c9 | 3494 | |
b34976b6 | 3495 | return TRUE; |
b49e97c9 | 3496 | } |
f4416af6 AO |
3497 | |
3498 | /* Reserve space in G for a GOT entry containing the value of symbol | |
3499 | SYMNDX in input bfd ABDF, plus ADDEND. */ | |
3500 | ||
3501 | static bfd_boolean | |
9719ad41 | 3502 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
a8028dd0 | 3503 | struct bfd_link_info *info, |
0f20cc35 | 3504 | unsigned char tls_flag) |
f4416af6 | 3505 | { |
a8028dd0 RS |
3506 | struct mips_elf_link_hash_table *htab; |
3507 | struct mips_got_info *g; | |
f4416af6 AO |
3508 | struct mips_got_entry entry, **loc; |
3509 | ||
a8028dd0 RS |
3510 | htab = mips_elf_hash_table (info); |
3511 | g = htab->got_info; | |
3512 | BFD_ASSERT (g != NULL); | |
3513 | ||
f4416af6 AO |
3514 | entry.abfd = abfd; |
3515 | entry.symndx = symndx; | |
3516 | entry.d.addend = addend; | |
0f20cc35 | 3517 | entry.tls_type = tls_flag; |
f4416af6 AO |
3518 | loc = (struct mips_got_entry **) |
3519 | htab_find_slot (g->got_entries, &entry, INSERT); | |
3520 | ||
3521 | if (*loc) | |
0f20cc35 DJ |
3522 | { |
3523 | if (tls_flag == GOT_TLS_GD && !((*loc)->tls_type & GOT_TLS_GD)) | |
3524 | { | |
3525 | g->tls_gotno += 2; | |
3526 | (*loc)->tls_type |= tls_flag; | |
3527 | } | |
3528 | else if (tls_flag == GOT_TLS_IE && !((*loc)->tls_type & GOT_TLS_IE)) | |
3529 | { | |
3530 | g->tls_gotno += 1; | |
3531 | (*loc)->tls_type |= tls_flag; | |
3532 | } | |
3533 | return TRUE; | |
3534 | } | |
f4416af6 | 3535 | |
0f20cc35 DJ |
3536 | if (tls_flag != 0) |
3537 | { | |
3538 | entry.gotidx = -1; | |
3539 | entry.tls_type = tls_flag; | |
3540 | if (tls_flag == GOT_TLS_IE) | |
3541 | g->tls_gotno += 1; | |
3542 | else if (tls_flag == GOT_TLS_GD) | |
3543 | g->tls_gotno += 2; | |
3544 | else if (g->tls_ldm_offset == MINUS_ONE) | |
3545 | { | |
3546 | g->tls_ldm_offset = MINUS_TWO; | |
3547 | g->tls_gotno += 2; | |
3548 | } | |
3549 | } | |
3550 | else | |
3551 | { | |
3552 | entry.gotidx = g->local_gotno++; | |
3553 | entry.tls_type = 0; | |
3554 | } | |
f4416af6 AO |
3555 | |
3556 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3557 | ||
3558 | if (! *loc) | |
3559 | return FALSE; | |
143d77c5 | 3560 | |
f4416af6 AO |
3561 | memcpy (*loc, &entry, sizeof entry); |
3562 | ||
3563 | return TRUE; | |
3564 | } | |
c224138d RS |
3565 | |
3566 | /* Return the maximum number of GOT page entries required for RANGE. */ | |
3567 | ||
3568 | static bfd_vma | |
3569 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
3570 | { | |
3571 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
3572 | } | |
3573 | ||
3a3b6725 | 3574 | /* Record that ABFD has a page relocation against symbol SYMNDX and |
a8028dd0 RS |
3575 | that ADDEND is the addend for that relocation. |
3576 | ||
3577 | This function creates an upper bound on the number of GOT slots | |
3578 | required; no attempt is made to combine references to non-overridable | |
3579 | global symbols across multiple input files. */ | |
c224138d RS |
3580 | |
3581 | static bfd_boolean | |
a8028dd0 RS |
3582 | mips_elf_record_got_page_entry (struct bfd_link_info *info, bfd *abfd, |
3583 | long symndx, bfd_signed_vma addend) | |
c224138d | 3584 | { |
a8028dd0 RS |
3585 | struct mips_elf_link_hash_table *htab; |
3586 | struct mips_got_info *g; | |
c224138d RS |
3587 | struct mips_got_page_entry lookup, *entry; |
3588 | struct mips_got_page_range **range_ptr, *range; | |
3589 | bfd_vma old_pages, new_pages; | |
3590 | void **loc; | |
3591 | ||
a8028dd0 RS |
3592 | htab = mips_elf_hash_table (info); |
3593 | g = htab->got_info; | |
3594 | BFD_ASSERT (g != NULL); | |
3595 | ||
c224138d RS |
3596 | /* Find the mips_got_page_entry hash table entry for this symbol. */ |
3597 | lookup.abfd = abfd; | |
3598 | lookup.symndx = symndx; | |
3599 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
3600 | if (loc == NULL) | |
3601 | return FALSE; | |
3602 | ||
3603 | /* Create a mips_got_page_entry if this is the first time we've | |
3604 | seen the symbol. */ | |
3605 | entry = (struct mips_got_page_entry *) *loc; | |
3606 | if (!entry) | |
3607 | { | |
3608 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
3609 | if (!entry) | |
3610 | return FALSE; | |
3611 | ||
3612 | entry->abfd = abfd; | |
3613 | entry->symndx = symndx; | |
3614 | entry->ranges = NULL; | |
3615 | entry->num_pages = 0; | |
3616 | *loc = entry; | |
3617 | } | |
3618 | ||
3619 | /* Skip over ranges whose maximum extent cannot share a page entry | |
3620 | with ADDEND. */ | |
3621 | range_ptr = &entry->ranges; | |
3622 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
3623 | range_ptr = &(*range_ptr)->next; | |
3624 | ||
3625 | /* If we scanned to the end of the list, or found a range whose | |
3626 | minimum extent cannot share a page entry with ADDEND, create | |
3627 | a new singleton range. */ | |
3628 | range = *range_ptr; | |
3629 | if (!range || addend < range->min_addend - 0xffff) | |
3630 | { | |
3631 | range = bfd_alloc (abfd, sizeof (*range)); | |
3632 | if (!range) | |
3633 | return FALSE; | |
3634 | ||
3635 | range->next = *range_ptr; | |
3636 | range->min_addend = addend; | |
3637 | range->max_addend = addend; | |
3638 | ||
3639 | *range_ptr = range; | |
3640 | entry->num_pages++; | |
3641 | g->page_gotno++; | |
3642 | return TRUE; | |
3643 | } | |
3644 | ||
3645 | /* Remember how many pages the old range contributed. */ | |
3646 | old_pages = mips_elf_pages_for_range (range); | |
3647 | ||
3648 | /* Update the ranges. */ | |
3649 | if (addend < range->min_addend) | |
3650 | range->min_addend = addend; | |
3651 | else if (addend > range->max_addend) | |
3652 | { | |
3653 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
3654 | { | |
3655 | old_pages += mips_elf_pages_for_range (range->next); | |
3656 | range->max_addend = range->next->max_addend; | |
3657 | range->next = range->next->next; | |
3658 | } | |
3659 | else | |
3660 | range->max_addend = addend; | |
3661 | } | |
3662 | ||
3663 | /* Record any change in the total estimate. */ | |
3664 | new_pages = mips_elf_pages_for_range (range); | |
3665 | if (old_pages != new_pages) | |
3666 | { | |
3667 | entry->num_pages += new_pages - old_pages; | |
3668 | g->page_gotno += new_pages - old_pages; | |
3669 | } | |
3670 | ||
3671 | return TRUE; | |
3672 | } | |
33bb52fb RS |
3673 | |
3674 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
3675 | ||
3676 | static void | |
3677 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
3678 | unsigned int n) | |
3679 | { | |
3680 | asection *s; | |
3681 | struct mips_elf_link_hash_table *htab; | |
3682 | ||
3683 | htab = mips_elf_hash_table (info); | |
3684 | s = mips_elf_rel_dyn_section (info, FALSE); | |
3685 | BFD_ASSERT (s != NULL); | |
3686 | ||
3687 | if (htab->is_vxworks) | |
3688 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
3689 | else | |
3690 | { | |
3691 | if (s->size == 0) | |
3692 | { | |
3693 | /* Make room for a null element. */ | |
3694 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
3695 | ++s->reloc_count; | |
3696 | } | |
3697 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
3698 | } | |
3699 | } | |
3700 | \f | |
3701 | /* A htab_traverse callback for GOT entries. Set boolean *DATA to true | |
3702 | if the GOT entry is for an indirect or warning symbol. */ | |
3703 | ||
3704 | static int | |
3705 | mips_elf_check_recreate_got (void **entryp, void *data) | |
3706 | { | |
3707 | struct mips_got_entry *entry; | |
3708 | bfd_boolean *must_recreate; | |
3709 | ||
3710 | entry = (struct mips_got_entry *) *entryp; | |
3711 | must_recreate = (bfd_boolean *) data; | |
3712 | if (entry->abfd != NULL && entry->symndx == -1) | |
3713 | { | |
3714 | struct mips_elf_link_hash_entry *h; | |
3715 | ||
3716 | h = entry->d.h; | |
3717 | if (h->root.root.type == bfd_link_hash_indirect | |
3718 | || h->root.root.type == bfd_link_hash_warning) | |
3719 | { | |
3720 | *must_recreate = TRUE; | |
3721 | return 0; | |
3722 | } | |
3723 | } | |
3724 | return 1; | |
3725 | } | |
3726 | ||
3727 | /* A htab_traverse callback for GOT entries. Add all entries to | |
3728 | hash table *DATA, converting entries for indirect and warning | |
3729 | symbols into entries for the target symbol. Set *DATA to null | |
3730 | on error. */ | |
3731 | ||
3732 | static int | |
3733 | mips_elf_recreate_got (void **entryp, void *data) | |
3734 | { | |
3735 | htab_t *new_got; | |
3736 | struct mips_got_entry *entry; | |
3737 | void **slot; | |
3738 | ||
3739 | new_got = (htab_t *) data; | |
3740 | entry = (struct mips_got_entry *) *entryp; | |
3741 | if (entry->abfd != NULL && entry->symndx == -1) | |
3742 | { | |
3743 | struct mips_elf_link_hash_entry *h; | |
3744 | ||
3745 | h = entry->d.h; | |
3746 | while (h->root.root.type == bfd_link_hash_indirect | |
3747 | || h->root.root.type == bfd_link_hash_warning) | |
634835ae RS |
3748 | { |
3749 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
3750 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3751 | } | |
33bb52fb RS |
3752 | entry->d.h = h; |
3753 | } | |
3754 | slot = htab_find_slot (*new_got, entry, INSERT); | |
3755 | if (slot == NULL) | |
3756 | { | |
3757 | *new_got = NULL; | |
3758 | return 0; | |
3759 | } | |
3760 | if (*slot == NULL) | |
3761 | *slot = entry; | |
3762 | else | |
3763 | free (entry); | |
3764 | return 1; | |
3765 | } | |
3766 | ||
3767 | /* If any entries in G->got_entries are for indirect or warning symbols, | |
3768 | replace them with entries for the target symbol. */ | |
3769 | ||
3770 | static bfd_boolean | |
3771 | mips_elf_resolve_final_got_entries (struct mips_got_info *g) | |
3772 | { | |
3773 | bfd_boolean must_recreate; | |
3774 | htab_t new_got; | |
3775 | ||
3776 | must_recreate = FALSE; | |
3777 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &must_recreate); | |
3778 | if (must_recreate) | |
3779 | { | |
3780 | new_got = htab_create (htab_size (g->got_entries), | |
3781 | mips_elf_got_entry_hash, | |
3782 | mips_elf_got_entry_eq, NULL); | |
3783 | htab_traverse (g->got_entries, mips_elf_recreate_got, &new_got); | |
3784 | if (new_got == NULL) | |
3785 | return FALSE; | |
3786 | ||
3787 | /* Each entry in g->got_entries has either been copied to new_got | |
3788 | or freed. Now delete the hash table itself. */ | |
3789 | htab_delete (g->got_entries); | |
3790 | g->got_entries = new_got; | |
3791 | } | |
3792 | return TRUE; | |
3793 | } | |
3794 | ||
634835ae | 3795 | /* A mips_elf_link_hash_traverse callback for which DATA points |
d4596a51 | 3796 | to a mips_got_info. Count the number of type (3) entries. */ |
33bb52fb RS |
3797 | |
3798 | static int | |
d4596a51 | 3799 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb RS |
3800 | { |
3801 | struct mips_got_info *g; | |
3802 | ||
3803 | g = (struct mips_got_info *) data; | |
d4596a51 | 3804 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 3805 | { |
d4596a51 RS |
3806 | if (h->root.forced_local || h->root.dynindx == -1) |
3807 | { | |
3808 | /* We no longer need this entry if it was only used for | |
3809 | relocations; those relocations will be against the | |
3810 | null or section symbol instead of H. */ | |
3811 | if (h->global_got_area != GGA_RELOC_ONLY) | |
3812 | g->local_gotno++; | |
3813 | h->global_got_area = GGA_NONE; | |
3814 | } | |
3815 | else | |
23cc69b6 RS |
3816 | { |
3817 | g->global_gotno++; | |
3818 | if (h->global_got_area == GGA_RELOC_ONLY) | |
3819 | g->reloc_only_gotno++; | |
3820 | } | |
33bb52fb RS |
3821 | } |
3822 | return 1; | |
3823 | } | |
f4416af6 AO |
3824 | \f |
3825 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
3826 | ||
3827 | static hashval_t | |
9719ad41 | 3828 | mips_elf_bfd2got_entry_hash (const void *entry_) |
f4416af6 AO |
3829 | { |
3830 | const struct mips_elf_bfd2got_hash *entry | |
3831 | = (struct mips_elf_bfd2got_hash *)entry_; | |
3832 | ||
3833 | return entry->bfd->id; | |
3834 | } | |
3835 | ||
3836 | /* Check whether two hash entries have the same bfd. */ | |
3837 | ||
3838 | static int | |
9719ad41 | 3839 | mips_elf_bfd2got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3840 | { |
3841 | const struct mips_elf_bfd2got_hash *e1 | |
3842 | = (const struct mips_elf_bfd2got_hash *)entry1; | |
3843 | const struct mips_elf_bfd2got_hash *e2 | |
3844 | = (const struct mips_elf_bfd2got_hash *)entry2; | |
3845 | ||
3846 | return e1->bfd == e2->bfd; | |
3847 | } | |
3848 | ||
bad36eac | 3849 | /* In a multi-got link, determine the GOT to be used for IBFD. G must |
f4416af6 AO |
3850 | be the master GOT data. */ |
3851 | ||
3852 | static struct mips_got_info * | |
9719ad41 | 3853 | mips_elf_got_for_ibfd (struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
3854 | { |
3855 | struct mips_elf_bfd2got_hash e, *p; | |
3856 | ||
3857 | if (! g->bfd2got) | |
3858 | return g; | |
3859 | ||
3860 | e.bfd = ibfd; | |
9719ad41 | 3861 | p = htab_find (g->bfd2got, &e); |
f4416af6 AO |
3862 | return p ? p->g : NULL; |
3863 | } | |
3864 | ||
c224138d RS |
3865 | /* Use BFD2GOT to find ABFD's got entry, creating one if none exists. |
3866 | Return NULL if an error occured. */ | |
f4416af6 | 3867 | |
c224138d RS |
3868 | static struct mips_got_info * |
3869 | mips_elf_get_got_for_bfd (struct htab *bfd2got, bfd *output_bfd, | |
3870 | bfd *input_bfd) | |
f4416af6 | 3871 | { |
f4416af6 | 3872 | struct mips_elf_bfd2got_hash bfdgot_entry, *bfdgot; |
c224138d | 3873 | struct mips_got_info *g; |
f4416af6 | 3874 | void **bfdgotp; |
143d77c5 | 3875 | |
c224138d | 3876 | bfdgot_entry.bfd = input_bfd; |
f4416af6 | 3877 | bfdgotp = htab_find_slot (bfd2got, &bfdgot_entry, INSERT); |
c224138d | 3878 | bfdgot = (struct mips_elf_bfd2got_hash *) *bfdgotp; |
f4416af6 | 3879 | |
c224138d | 3880 | if (bfdgot == NULL) |
f4416af6 | 3881 | { |
c224138d RS |
3882 | bfdgot = ((struct mips_elf_bfd2got_hash *) |
3883 | bfd_alloc (output_bfd, sizeof (struct mips_elf_bfd2got_hash))); | |
f4416af6 | 3884 | if (bfdgot == NULL) |
c224138d | 3885 | return NULL; |
f4416af6 AO |
3886 | |
3887 | *bfdgotp = bfdgot; | |
3888 | ||
c224138d RS |
3889 | g = ((struct mips_got_info *) |
3890 | bfd_alloc (output_bfd, sizeof (struct mips_got_info))); | |
f4416af6 | 3891 | if (g == NULL) |
c224138d RS |
3892 | return NULL; |
3893 | ||
3894 | bfdgot->bfd = input_bfd; | |
3895 | bfdgot->g = g; | |
f4416af6 AO |
3896 | |
3897 | g->global_gotsym = NULL; | |
3898 | g->global_gotno = 0; | |
23cc69b6 | 3899 | g->reloc_only_gotno = 0; |
f4416af6 | 3900 | g->local_gotno = 0; |
c224138d | 3901 | g->page_gotno = 0; |
f4416af6 | 3902 | g->assigned_gotno = -1; |
0f20cc35 DJ |
3903 | g->tls_gotno = 0; |
3904 | g->tls_assigned_gotno = 0; | |
3905 | g->tls_ldm_offset = MINUS_ONE; | |
f4416af6 | 3906 | g->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
9719ad41 | 3907 | mips_elf_multi_got_entry_eq, NULL); |
f4416af6 | 3908 | if (g->got_entries == NULL) |
c224138d RS |
3909 | return NULL; |
3910 | ||
3911 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
3912 | mips_got_page_entry_eq, NULL); | |
3913 | if (g->got_page_entries == NULL) | |
3914 | return NULL; | |
f4416af6 AO |
3915 | |
3916 | g->bfd2got = NULL; | |
3917 | g->next = NULL; | |
3918 | } | |
3919 | ||
c224138d RS |
3920 | return bfdgot->g; |
3921 | } | |
3922 | ||
3923 | /* A htab_traverse callback for the entries in the master got. | |
3924 | Create one separate got for each bfd that has entries in the global | |
3925 | got, such that we can tell how many local and global entries each | |
3926 | bfd requires. */ | |
3927 | ||
3928 | static int | |
3929 | mips_elf_make_got_per_bfd (void **entryp, void *p) | |
3930 | { | |
3931 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3932 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
3933 | struct mips_got_info *g; | |
3934 | ||
3935 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
3936 | if (g == NULL) | |
3937 | { | |
3938 | arg->obfd = NULL; | |
3939 | return 0; | |
3940 | } | |
3941 | ||
f4416af6 AO |
3942 | /* Insert the GOT entry in the bfd's got entry hash table. */ |
3943 | entryp = htab_find_slot (g->got_entries, entry, INSERT); | |
3944 | if (*entryp != NULL) | |
3945 | return 1; | |
143d77c5 | 3946 | |
f4416af6 AO |
3947 | *entryp = entry; |
3948 | ||
0f20cc35 DJ |
3949 | if (entry->tls_type) |
3950 | { | |
3951 | if (entry->tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) | |
3952 | g->tls_gotno += 2; | |
3953 | if (entry->tls_type & GOT_TLS_IE) | |
3954 | g->tls_gotno += 1; | |
3955 | } | |
33bb52fb | 3956 | else if (entry->symndx >= 0 || entry->d.h->root.forced_local) |
f4416af6 AO |
3957 | ++g->local_gotno; |
3958 | else | |
3959 | ++g->global_gotno; | |
3960 | ||
3961 | return 1; | |
3962 | } | |
3963 | ||
c224138d RS |
3964 | /* A htab_traverse callback for the page entries in the master got. |
3965 | Associate each page entry with the bfd's got. */ | |
3966 | ||
3967 | static int | |
3968 | mips_elf_make_got_pages_per_bfd (void **entryp, void *p) | |
3969 | { | |
3970 | struct mips_got_page_entry *entry = (struct mips_got_page_entry *) *entryp; | |
3971 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *) p; | |
3972 | struct mips_got_info *g; | |
3973 | ||
3974 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
3975 | if (g == NULL) | |
3976 | { | |
3977 | arg->obfd = NULL; | |
3978 | return 0; | |
3979 | } | |
3980 | ||
3981 | /* Insert the GOT entry in the bfd's got entry hash table. */ | |
3982 | entryp = htab_find_slot (g->got_page_entries, entry, INSERT); | |
3983 | if (*entryp != NULL) | |
3984 | return 1; | |
3985 | ||
3986 | *entryp = entry; | |
3987 | g->page_gotno += entry->num_pages; | |
3988 | return 1; | |
3989 | } | |
3990 | ||
3991 | /* Consider merging the got described by BFD2GOT with TO, using the | |
3992 | information given by ARG. Return -1 if this would lead to overflow, | |
3993 | 1 if they were merged successfully, and 0 if a merge failed due to | |
3994 | lack of memory. (These values are chosen so that nonnegative return | |
3995 | values can be returned by a htab_traverse callback.) */ | |
3996 | ||
3997 | static int | |
3998 | mips_elf_merge_got_with (struct mips_elf_bfd2got_hash *bfd2got, | |
3999 | struct mips_got_info *to, | |
4000 | struct mips_elf_got_per_bfd_arg *arg) | |
4001 | { | |
4002 | struct mips_got_info *from = bfd2got->g; | |
4003 | unsigned int estimate; | |
4004 | ||
4005 | /* Work out how many page entries we would need for the combined GOT. */ | |
4006 | estimate = arg->max_pages; | |
4007 | if (estimate >= from->page_gotno + to->page_gotno) | |
4008 | estimate = from->page_gotno + to->page_gotno; | |
4009 | ||
4010 | /* And conservatively estimate how many local, global and TLS entries | |
4011 | would be needed. */ | |
4012 | estimate += (from->local_gotno | |
4013 | + from->global_gotno | |
4014 | + from->tls_gotno | |
4015 | + to->local_gotno | |
4016 | + to->global_gotno | |
4017 | + to->tls_gotno); | |
4018 | ||
4019 | /* Bail out if the combined GOT might be too big. */ | |
4020 | if (estimate > arg->max_count) | |
4021 | return -1; | |
4022 | ||
4023 | /* Commit to the merge. Record that TO is now the bfd for this got. */ | |
4024 | bfd2got->g = to; | |
4025 | ||
4026 | /* Transfer the bfd's got information from FROM to TO. */ | |
4027 | htab_traverse (from->got_entries, mips_elf_make_got_per_bfd, arg); | |
4028 | if (arg->obfd == NULL) | |
4029 | return 0; | |
4030 | ||
4031 | htab_traverse (from->got_page_entries, mips_elf_make_got_pages_per_bfd, arg); | |
4032 | if (arg->obfd == NULL) | |
4033 | return 0; | |
4034 | ||
4035 | /* We don't have to worry about releasing memory of the actual | |
4036 | got entries, since they're all in the master got_entries hash | |
4037 | table anyway. */ | |
4038 | htab_delete (from->got_entries); | |
4039 | htab_delete (from->got_page_entries); | |
4040 | return 1; | |
4041 | } | |
4042 | ||
f4416af6 AO |
4043 | /* Attempt to merge gots of different input bfds. Try to use as much |
4044 | as possible of the primary got, since it doesn't require explicit | |
4045 | dynamic relocations, but don't use bfds that would reference global | |
4046 | symbols out of the addressable range. Failing the primary got, | |
4047 | attempt to merge with the current got, or finish the current got | |
4048 | and then make make the new got current. */ | |
4049 | ||
4050 | static int | |
9719ad41 | 4051 | mips_elf_merge_gots (void **bfd2got_, void *p) |
f4416af6 AO |
4052 | { |
4053 | struct mips_elf_bfd2got_hash *bfd2got | |
4054 | = (struct mips_elf_bfd2got_hash *)*bfd2got_; | |
4055 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
c224138d RS |
4056 | struct mips_got_info *g; |
4057 | unsigned int estimate; | |
4058 | int result; | |
4059 | ||
4060 | g = bfd2got->g; | |
4061 | ||
4062 | /* Work out the number of page, local and TLS entries. */ | |
4063 | estimate = arg->max_pages; | |
4064 | if (estimate > g->page_gotno) | |
4065 | estimate = g->page_gotno; | |
4066 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4067 | |
4068 | /* We place TLS GOT entries after both locals and globals. The globals | |
4069 | for the primary GOT may overflow the normal GOT size limit, so be | |
4070 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4071 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4072 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4073 | |
c224138d | 4074 | if (estimate <= arg->max_count) |
f4416af6 | 4075 | { |
c224138d RS |
4076 | /* If we don't have a primary GOT, use it as |
4077 | a starting point for the primary GOT. */ | |
4078 | if (!arg->primary) | |
4079 | { | |
4080 | arg->primary = bfd2got->g; | |
4081 | return 1; | |
4082 | } | |
f4416af6 | 4083 | |
c224138d RS |
4084 | /* Try merging with the primary GOT. */ |
4085 | result = mips_elf_merge_got_with (bfd2got, arg->primary, arg); | |
4086 | if (result >= 0) | |
4087 | return result; | |
f4416af6 | 4088 | } |
c224138d | 4089 | |
f4416af6 | 4090 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4091 | if (arg->current) |
f4416af6 | 4092 | { |
c224138d RS |
4093 | result = mips_elf_merge_got_with (bfd2got, arg->current, arg); |
4094 | if (result >= 0) | |
4095 | return result; | |
f4416af6 | 4096 | } |
c224138d | 4097 | |
f4416af6 AO |
4098 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4099 | fits; if it turns out that it doesn't, we'll get relocation | |
4100 | overflows anyway. */ | |
c224138d RS |
4101 | g->next = arg->current; |
4102 | arg->current = g; | |
0f20cc35 DJ |
4103 | |
4104 | return 1; | |
4105 | } | |
4106 | ||
ead49a57 RS |
4107 | /* Set the TLS GOT index for the GOT entry in ENTRYP. ENTRYP's NEXT field |
4108 | is null iff there is just a single GOT. */ | |
0f20cc35 DJ |
4109 | |
4110 | static int | |
4111 | mips_elf_initialize_tls_index (void **entryp, void *p) | |
4112 | { | |
4113 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4114 | struct mips_got_info *g = p; | |
ead49a57 | 4115 | bfd_vma next_index; |
cbf2cba4 | 4116 | unsigned char tls_type; |
0f20cc35 DJ |
4117 | |
4118 | /* We're only interested in TLS symbols. */ | |
4119 | if (entry->tls_type == 0) | |
4120 | return 1; | |
4121 | ||
ead49a57 RS |
4122 | next_index = MIPS_ELF_GOT_SIZE (entry->abfd) * (long) g->tls_assigned_gotno; |
4123 | ||
4124 | if (entry->symndx == -1 && g->next == NULL) | |
0f20cc35 | 4125 | { |
ead49a57 RS |
4126 | /* A type (3) got entry in the single-GOT case. We use the symbol's |
4127 | hash table entry to track its index. */ | |
4128 | if (entry->d.h->tls_type & GOT_TLS_OFFSET_DONE) | |
4129 | return 1; | |
4130 | entry->d.h->tls_type |= GOT_TLS_OFFSET_DONE; | |
4131 | entry->d.h->tls_got_offset = next_index; | |
cbf2cba4 | 4132 | tls_type = entry->d.h->tls_type; |
ead49a57 RS |
4133 | } |
4134 | else | |
4135 | { | |
4136 | if (entry->tls_type & GOT_TLS_LDM) | |
0f20cc35 | 4137 | { |
ead49a57 RS |
4138 | /* There are separate mips_got_entry objects for each input bfd |
4139 | that requires an LDM entry. Make sure that all LDM entries in | |
4140 | a GOT resolve to the same index. */ | |
4141 | if (g->tls_ldm_offset != MINUS_TWO && g->tls_ldm_offset != MINUS_ONE) | |
4005427f | 4142 | { |
ead49a57 | 4143 | entry->gotidx = g->tls_ldm_offset; |
4005427f RS |
4144 | return 1; |
4145 | } | |
ead49a57 | 4146 | g->tls_ldm_offset = next_index; |
0f20cc35 | 4147 | } |
ead49a57 | 4148 | entry->gotidx = next_index; |
cbf2cba4 | 4149 | tls_type = entry->tls_type; |
f4416af6 AO |
4150 | } |
4151 | ||
ead49a57 | 4152 | /* Account for the entries we've just allocated. */ |
cbf2cba4 | 4153 | if (tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) |
0f20cc35 | 4154 | g->tls_assigned_gotno += 2; |
cbf2cba4 | 4155 | if (tls_type & GOT_TLS_IE) |
0f20cc35 DJ |
4156 | g->tls_assigned_gotno += 1; |
4157 | ||
f4416af6 AO |
4158 | return 1; |
4159 | } | |
4160 | ||
4161 | /* If passed a NULL mips_got_info in the argument, set the marker used | |
4162 | to tell whether a global symbol needs a got entry (in the primary | |
4163 | got) to the given VALUE. | |
4164 | ||
4165 | If passed a pointer G to a mips_got_info in the argument (it must | |
4166 | not be the primary GOT), compute the offset from the beginning of | |
4167 | the (primary) GOT section to the entry in G corresponding to the | |
4168 | global symbol. G's assigned_gotno must contain the index of the | |
4169 | first available global GOT entry in G. VALUE must contain the size | |
4170 | of a GOT entry in bytes. For each global GOT entry that requires a | |
4171 | dynamic relocation, NEEDED_RELOCS is incremented, and the symbol is | |
4cc11e76 | 4172 | marked as not eligible for lazy resolution through a function |
f4416af6 AO |
4173 | stub. */ |
4174 | static int | |
9719ad41 | 4175 | mips_elf_set_global_got_offset (void **entryp, void *p) |
f4416af6 AO |
4176 | { |
4177 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4178 | struct mips_elf_set_global_got_offset_arg *arg | |
4179 | = (struct mips_elf_set_global_got_offset_arg *)p; | |
4180 | struct mips_got_info *g = arg->g; | |
4181 | ||
0f20cc35 DJ |
4182 | if (g && entry->tls_type != GOT_NORMAL) |
4183 | arg->needed_relocs += | |
4184 | mips_tls_got_relocs (arg->info, entry->tls_type, | |
4185 | entry->symndx == -1 ? &entry->d.h->root : NULL); | |
4186 | ||
634835ae RS |
4187 | if (entry->abfd != NULL |
4188 | && entry->symndx == -1 | |
4189 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 AO |
4190 | { |
4191 | if (g) | |
4192 | { | |
4193 | BFD_ASSERT (g->global_gotsym == NULL); | |
4194 | ||
4195 | entry->gotidx = arg->value * (long) g->assigned_gotno++; | |
f4416af6 AO |
4196 | if (arg->info->shared |
4197 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
f5385ebf AM |
4198 | && entry->d.h->root.def_dynamic |
4199 | && !entry->d.h->root.def_regular)) | |
f4416af6 AO |
4200 | ++arg->needed_relocs; |
4201 | } | |
4202 | else | |
634835ae | 4203 | entry->d.h->global_got_area = arg->value; |
f4416af6 AO |
4204 | } |
4205 | ||
4206 | return 1; | |
4207 | } | |
4208 | ||
33bb52fb RS |
4209 | /* A htab_traverse callback for GOT entries for which DATA is the |
4210 | bfd_link_info. Forbid any global symbols from having traditional | |
4211 | lazy-binding stubs. */ | |
4212 | ||
0626d451 | 4213 | static int |
33bb52fb | 4214 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4215 | { |
33bb52fb RS |
4216 | struct bfd_link_info *info; |
4217 | struct mips_elf_link_hash_table *htab; | |
4218 | struct mips_got_entry *entry; | |
0626d451 | 4219 | |
33bb52fb RS |
4220 | entry = (struct mips_got_entry *) *entryp; |
4221 | info = (struct bfd_link_info *) data; | |
4222 | htab = mips_elf_hash_table (info); | |
0626d451 RS |
4223 | if (entry->abfd != NULL |
4224 | && entry->symndx == -1 | |
33bb52fb | 4225 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4226 | { |
33bb52fb RS |
4227 | entry->d.h->needs_lazy_stub = FALSE; |
4228 | htab->lazy_stub_count--; | |
f4416af6 | 4229 | } |
143d77c5 | 4230 | |
f4416af6 AO |
4231 | return 1; |
4232 | } | |
4233 | ||
f4416af6 AO |
4234 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4235 | the primary GOT. */ | |
4236 | static bfd_vma | |
9719ad41 | 4237 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4238 | { |
4239 | if (g->bfd2got == NULL) | |
4240 | return 0; | |
4241 | ||
4242 | g = mips_elf_got_for_ibfd (g, ibfd); | |
4243 | if (! g) | |
4244 | return 0; | |
4245 | ||
4246 | BFD_ASSERT (g->next); | |
4247 | ||
4248 | g = g->next; | |
143d77c5 | 4249 | |
0f20cc35 DJ |
4250 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4251 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4252 | } |
4253 | ||
4254 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4255 | a sequence of GOTs, each one 16-bit addressable. */ | |
4256 | ||
4257 | static bfd_boolean | |
9719ad41 | 4258 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4259 | asection *got, bfd_size_type pages) |
f4416af6 | 4260 | { |
a8028dd0 | 4261 | struct mips_elf_link_hash_table *htab; |
f4416af6 AO |
4262 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
4263 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
a8028dd0 | 4264 | struct mips_got_info *g, *gg; |
33bb52fb RS |
4265 | unsigned int assign, needed_relocs; |
4266 | bfd *dynobj; | |
f4416af6 | 4267 | |
33bb52fb | 4268 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
4269 | htab = mips_elf_hash_table (info); |
4270 | g = htab->got_info; | |
f4416af6 | 4271 | g->bfd2got = htab_try_create (1, mips_elf_bfd2got_entry_hash, |
9719ad41 | 4272 | mips_elf_bfd2got_entry_eq, NULL); |
f4416af6 AO |
4273 | if (g->bfd2got == NULL) |
4274 | return FALSE; | |
4275 | ||
4276 | got_per_bfd_arg.bfd2got = g->bfd2got; | |
4277 | got_per_bfd_arg.obfd = abfd; | |
4278 | got_per_bfd_arg.info = info; | |
4279 | ||
4280 | /* Count how many GOT entries each input bfd requires, creating a | |
4281 | map from bfd to got info while at that. */ | |
f4416af6 AO |
4282 | htab_traverse (g->got_entries, mips_elf_make_got_per_bfd, &got_per_bfd_arg); |
4283 | if (got_per_bfd_arg.obfd == NULL) | |
4284 | return FALSE; | |
4285 | ||
c224138d RS |
4286 | /* Also count how many page entries each input bfd requires. */ |
4287 | htab_traverse (g->got_page_entries, mips_elf_make_got_pages_per_bfd, | |
4288 | &got_per_bfd_arg); | |
4289 | if (got_per_bfd_arg.obfd == NULL) | |
4290 | return FALSE; | |
4291 | ||
f4416af6 AO |
4292 | got_per_bfd_arg.current = NULL; |
4293 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4294 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4295 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4296 | - htab->reserved_gotno); |
c224138d | 4297 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 DJ |
4298 | /* The number of globals that will be included in the primary GOT. |
4299 | See the calls to mips_elf_set_global_got_offset below for more | |
4300 | information. */ | |
4301 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4302 | |
4303 | /* Try to merge the GOTs of input bfds together, as long as they | |
4304 | don't seem to exceed the maximum GOT size, choosing one of them | |
4305 | to be the primary GOT. */ | |
4306 | htab_traverse (g->bfd2got, mips_elf_merge_gots, &got_per_bfd_arg); | |
4307 | if (got_per_bfd_arg.obfd == NULL) | |
4308 | return FALSE; | |
4309 | ||
0f20cc35 | 4310 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 AO |
4311 | if (got_per_bfd_arg.primary == NULL) |
4312 | { | |
4313 | g->next = (struct mips_got_info *) | |
4314 | bfd_alloc (abfd, sizeof (struct mips_got_info)); | |
4315 | if (g->next == NULL) | |
4316 | return FALSE; | |
4317 | ||
4318 | g->next->global_gotsym = NULL; | |
4319 | g->next->global_gotno = 0; | |
23cc69b6 | 4320 | g->next->reloc_only_gotno = 0; |
f4416af6 | 4321 | g->next->local_gotno = 0; |
c224138d | 4322 | g->next->page_gotno = 0; |
0f20cc35 | 4323 | g->next->tls_gotno = 0; |
f4416af6 | 4324 | g->next->assigned_gotno = 0; |
0f20cc35 DJ |
4325 | g->next->tls_assigned_gotno = 0; |
4326 | g->next->tls_ldm_offset = MINUS_ONE; | |
f4416af6 AO |
4327 | g->next->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
4328 | mips_elf_multi_got_entry_eq, | |
9719ad41 | 4329 | NULL); |
f4416af6 AO |
4330 | if (g->next->got_entries == NULL) |
4331 | return FALSE; | |
c224138d RS |
4332 | g->next->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4333 | mips_got_page_entry_eq, | |
4334 | NULL); | |
4335 | if (g->next->got_page_entries == NULL) | |
4336 | return FALSE; | |
f4416af6 AO |
4337 | g->next->bfd2got = NULL; |
4338 | } | |
4339 | else | |
4340 | g->next = got_per_bfd_arg.primary; | |
4341 | g->next->next = got_per_bfd_arg.current; | |
4342 | ||
4343 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4344 | gg = g; | |
4345 | g = g->next; | |
4346 | ||
4347 | /* Map the output bfd to the primary got. That's what we're going | |
4348 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4349 | didn't mark in check_relocs, and we want a quick way to find it. | |
4350 | We can't just use gg->next because we're going to reverse the | |
4351 | list. */ | |
4352 | { | |
4353 | struct mips_elf_bfd2got_hash *bfdgot; | |
4354 | void **bfdgotp; | |
143d77c5 | 4355 | |
f4416af6 AO |
4356 | bfdgot = (struct mips_elf_bfd2got_hash *)bfd_alloc |
4357 | (abfd, sizeof (struct mips_elf_bfd2got_hash)); | |
4358 | ||
4359 | if (bfdgot == NULL) | |
4360 | return FALSE; | |
4361 | ||
4362 | bfdgot->bfd = abfd; | |
4363 | bfdgot->g = g; | |
4364 | bfdgotp = htab_find_slot (gg->bfd2got, bfdgot, INSERT); | |
4365 | ||
4366 | BFD_ASSERT (*bfdgotp == NULL); | |
4367 | *bfdgotp = bfdgot; | |
4368 | } | |
4369 | ||
634835ae RS |
4370 | /* Every symbol that is referenced in a dynamic relocation must be |
4371 | present in the primary GOT, so arrange for them to appear after | |
4372 | those that are actually referenced. */ | |
23cc69b6 | 4373 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4374 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4375 | |
f4416af6 | 4376 | set_got_offset_arg.g = NULL; |
634835ae | 4377 | set_got_offset_arg.value = GGA_RELOC_ONLY; |
f4416af6 AO |
4378 | htab_traverse (gg->got_entries, mips_elf_set_global_got_offset, |
4379 | &set_got_offset_arg); | |
634835ae | 4380 | set_got_offset_arg.value = GGA_NORMAL; |
f4416af6 AO |
4381 | htab_traverse (g->got_entries, mips_elf_set_global_got_offset, |
4382 | &set_got_offset_arg); | |
f4416af6 AO |
4383 | |
4384 | /* Now go through the GOTs assigning them offset ranges. | |
4385 | [assigned_gotno, local_gotno[ will be set to the range of local | |
4386 | entries in each GOT. We can then compute the end of a GOT by | |
4387 | adding local_gotno to global_gotno. We reverse the list and make | |
4388 | it circular since then we'll be able to quickly compute the | |
4389 | beginning of a GOT, by computing the end of its predecessor. To | |
4390 | avoid special cases for the primary GOT, while still preserving | |
4391 | assertions that are valid for both single- and multi-got links, | |
4392 | we arrange for the main got struct to have the right number of | |
4393 | global entries, but set its local_gotno such that the initial | |
4394 | offset of the primary GOT is zero. Remember that the primary GOT | |
4395 | will become the last item in the circular linked list, so it | |
4396 | points back to the master GOT. */ | |
4397 | gg->local_gotno = -g->global_gotno; | |
4398 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4399 | gg->tls_gotno = 0; |
f4416af6 AO |
4400 | assign = 0; |
4401 | gg->next = gg; | |
4402 | ||
4403 | do | |
4404 | { | |
4405 | struct mips_got_info *gn; | |
4406 | ||
861fb55a | 4407 | assign += htab->reserved_gotno; |
f4416af6 | 4408 | g->assigned_gotno = assign; |
c224138d RS |
4409 | g->local_gotno += assign; |
4410 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
4411 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4412 | ||
ead49a57 RS |
4413 | /* Take g out of the direct list, and push it onto the reversed |
4414 | list that gg points to. g->next is guaranteed to be nonnull after | |
4415 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4416 | gn = g->next; | |
4417 | g->next = gg->next; | |
4418 | gg->next = g; | |
4419 | ||
0f20cc35 DJ |
4420 | /* Set up any TLS entries. We always place the TLS entries after |
4421 | all non-TLS entries. */ | |
4422 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
4423 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
f4416af6 | 4424 | |
ead49a57 | 4425 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4426 | g = gn; |
0626d451 | 4427 | |
33bb52fb RS |
4428 | /* Forbid global symbols in every non-primary GOT from having |
4429 | lazy-binding stubs. */ | |
0626d451 | 4430 | if (g) |
33bb52fb | 4431 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4432 | } |
4433 | while (g); | |
4434 | ||
eea6121a | 4435 | got->size = (gg->next->local_gotno |
33bb52fb RS |
4436 | + gg->next->global_gotno |
4437 | + gg->next->tls_gotno) * MIPS_ELF_GOT_SIZE (abfd); | |
4438 | ||
4439 | needed_relocs = 0; | |
4440 | set_got_offset_arg.value = MIPS_ELF_GOT_SIZE (abfd); | |
4441 | set_got_offset_arg.info = info; | |
4442 | for (g = gg->next; g && g->next != gg; g = g->next) | |
4443 | { | |
4444 | unsigned int save_assign; | |
4445 | ||
4446 | /* Assign offsets to global GOT entries. */ | |
4447 | save_assign = g->assigned_gotno; | |
4448 | g->assigned_gotno = g->local_gotno; | |
4449 | set_got_offset_arg.g = g; | |
4450 | set_got_offset_arg.needed_relocs = 0; | |
4451 | htab_traverse (g->got_entries, | |
4452 | mips_elf_set_global_got_offset, | |
4453 | &set_got_offset_arg); | |
4454 | needed_relocs += set_got_offset_arg.needed_relocs; | |
4455 | BFD_ASSERT (g->assigned_gotno - g->local_gotno <= g->global_gotno); | |
4456 | ||
4457 | g->assigned_gotno = save_assign; | |
4458 | if (info->shared) | |
4459 | { | |
4460 | needed_relocs += g->local_gotno - g->assigned_gotno; | |
4461 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno | |
4462 | + g->next->global_gotno | |
4463 | + g->next->tls_gotno | |
861fb55a | 4464 | + htab->reserved_gotno); |
33bb52fb RS |
4465 | } |
4466 | } | |
4467 | ||
4468 | if (needed_relocs) | |
4469 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4470 | needed_relocs); | |
143d77c5 | 4471 | |
f4416af6 AO |
4472 | return TRUE; |
4473 | } | |
143d77c5 | 4474 | |
b49e97c9 TS |
4475 | \f |
4476 | /* Returns the first relocation of type r_type found, beginning with | |
4477 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4478 | ||
4479 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4480 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4481 | const Elf_Internal_Rela *relocation, | |
4482 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4483 | { |
c000e262 TS |
4484 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4485 | ||
b49e97c9 TS |
4486 | while (relocation < relend) |
4487 | { | |
c000e262 TS |
4488 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4489 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4490 | return relocation; |
4491 | ||
4492 | ++relocation; | |
4493 | } | |
4494 | ||
4495 | /* We didn't find it. */ | |
b49e97c9 TS |
4496 | return NULL; |
4497 | } | |
4498 | ||
4499 | /* Return whether a relocation is against a local symbol. */ | |
4500 | ||
b34976b6 | 4501 | static bfd_boolean |
9719ad41 RS |
4502 | mips_elf_local_relocation_p (bfd *input_bfd, |
4503 | const Elf_Internal_Rela *relocation, | |
4504 | asection **local_sections, | |
4505 | bfd_boolean check_forced) | |
b49e97c9 TS |
4506 | { |
4507 | unsigned long r_symndx; | |
4508 | Elf_Internal_Shdr *symtab_hdr; | |
4509 | struct mips_elf_link_hash_entry *h; | |
4510 | size_t extsymoff; | |
4511 | ||
4512 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4513 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4514 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
4515 | ||
4516 | if (r_symndx < extsymoff) | |
b34976b6 | 4517 | return TRUE; |
b49e97c9 | 4518 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 4519 | return TRUE; |
b49e97c9 TS |
4520 | |
4521 | if (check_forced) | |
4522 | { | |
4523 | /* Look up the hash table to check whether the symbol | |
4524 | was forced local. */ | |
4525 | h = (struct mips_elf_link_hash_entry *) | |
4526 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
4527 | /* Find the real hash-table entry for this symbol. */ | |
4528 | while (h->root.root.type == bfd_link_hash_indirect | |
4529 | || h->root.root.type == bfd_link_hash_warning) | |
4530 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
f5385ebf | 4531 | if (h->root.forced_local) |
b34976b6 | 4532 | return TRUE; |
b49e97c9 TS |
4533 | } |
4534 | ||
b34976b6 | 4535 | return FALSE; |
b49e97c9 TS |
4536 | } |
4537 | \f | |
4538 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4539 | ||
a7ebbfdf | 4540 | bfd_vma |
9719ad41 | 4541 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4542 | { |
4543 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4544 | /* VALUE is negative. */ | |
4545 | value |= ((bfd_vma) - 1) << bits; | |
4546 | ||
4547 | return value; | |
4548 | } | |
4549 | ||
4550 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4551 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4552 | BITS. */ |
4553 | ||
b34976b6 | 4554 | static bfd_boolean |
9719ad41 | 4555 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4556 | { |
4557 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4558 | ||
4559 | if (svalue > (1 << (bits - 1)) - 1) | |
4560 | /* The value is too big. */ | |
b34976b6 | 4561 | return TRUE; |
b49e97c9 TS |
4562 | else if (svalue < -(1 << (bits - 1))) |
4563 | /* The value is too small. */ | |
b34976b6 | 4564 | return TRUE; |
b49e97c9 TS |
4565 | |
4566 | /* All is well. */ | |
b34976b6 | 4567 | return FALSE; |
b49e97c9 TS |
4568 | } |
4569 | ||
4570 | /* Calculate the %high function. */ | |
4571 | ||
4572 | static bfd_vma | |
9719ad41 | 4573 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4574 | { |
4575 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4576 | } | |
4577 | ||
4578 | /* Calculate the %higher function. */ | |
4579 | ||
4580 | static bfd_vma | |
9719ad41 | 4581 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4582 | { |
4583 | #ifdef BFD64 | |
4584 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4585 | #else | |
4586 | abort (); | |
c5ae1840 | 4587 | return MINUS_ONE; |
b49e97c9 TS |
4588 | #endif |
4589 | } | |
4590 | ||
4591 | /* Calculate the %highest function. */ | |
4592 | ||
4593 | static bfd_vma | |
9719ad41 | 4594 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4595 | { |
4596 | #ifdef BFD64 | |
b15e6682 | 4597 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4598 | #else |
4599 | abort (); | |
c5ae1840 | 4600 | return MINUS_ONE; |
b49e97c9 TS |
4601 | #endif |
4602 | } | |
4603 | \f | |
4604 | /* Create the .compact_rel section. */ | |
4605 | ||
b34976b6 | 4606 | static bfd_boolean |
9719ad41 RS |
4607 | mips_elf_create_compact_rel_section |
4608 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4609 | { |
4610 | flagword flags; | |
4611 | register asection *s; | |
4612 | ||
4613 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
4614 | { | |
4615 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4616 | | SEC_READONLY); | |
4617 | ||
3496cb2a | 4618 | s = bfd_make_section_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4619 | if (s == NULL |
b49e97c9 TS |
4620 | || ! bfd_set_section_alignment (abfd, s, |
4621 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4622 | return FALSE; |
b49e97c9 | 4623 | |
eea6121a | 4624 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4625 | } |
4626 | ||
b34976b6 | 4627 | return TRUE; |
b49e97c9 TS |
4628 | } |
4629 | ||
4630 | /* Create the .got section to hold the global offset table. */ | |
4631 | ||
b34976b6 | 4632 | static bfd_boolean |
23cc69b6 | 4633 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
4634 | { |
4635 | flagword flags; | |
4636 | register asection *s; | |
4637 | struct elf_link_hash_entry *h; | |
14a793b2 | 4638 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
4639 | struct mips_got_info *g; |
4640 | bfd_size_type amt; | |
0a44bf69 RS |
4641 | struct mips_elf_link_hash_table *htab; |
4642 | ||
4643 | htab = mips_elf_hash_table (info); | |
b49e97c9 TS |
4644 | |
4645 | /* This function may be called more than once. */ | |
23cc69b6 RS |
4646 | if (htab->sgot) |
4647 | return TRUE; | |
b49e97c9 TS |
4648 | |
4649 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4650 | | SEC_LINKER_CREATED); | |
4651 | ||
72b4917c TS |
4652 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4653 | in the function stub generation and in the linker script. */ | |
3496cb2a | 4654 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
b49e97c9 | 4655 | if (s == NULL |
72b4917c | 4656 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4657 | return FALSE; |
a8028dd0 | 4658 | htab->sgot = s; |
b49e97c9 TS |
4659 | |
4660 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4661 | linker script because we don't want to define the symbol if we | |
4662 | are not creating a global offset table. */ | |
14a793b2 | 4663 | bh = NULL; |
b49e97c9 TS |
4664 | if (! (_bfd_generic_link_add_one_symbol |
4665 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4666 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4667 | return FALSE; |
14a793b2 AM |
4668 | |
4669 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4670 | h->non_elf = 0; |
4671 | h->def_regular = 1; | |
b49e97c9 | 4672 | h->type = STT_OBJECT; |
d329bcd1 | 4673 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4674 | |
4675 | if (info->shared | |
c152c796 | 4676 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4677 | return FALSE; |
b49e97c9 | 4678 | |
b49e97c9 | 4679 | amt = sizeof (struct mips_got_info); |
9719ad41 | 4680 | g = bfd_alloc (abfd, amt); |
b49e97c9 | 4681 | if (g == NULL) |
b34976b6 | 4682 | return FALSE; |
b49e97c9 | 4683 | g->global_gotsym = NULL; |
e3d54347 | 4684 | g->global_gotno = 0; |
23cc69b6 | 4685 | g->reloc_only_gotno = 0; |
0f20cc35 | 4686 | g->tls_gotno = 0; |
861fb55a | 4687 | g->local_gotno = 0; |
c224138d | 4688 | g->page_gotno = 0; |
861fb55a | 4689 | g->assigned_gotno = 0; |
f4416af6 AO |
4690 | g->bfd2got = NULL; |
4691 | g->next = NULL; | |
0f20cc35 | 4692 | g->tls_ldm_offset = MINUS_ONE; |
b15e6682 | 4693 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
9719ad41 | 4694 | mips_elf_got_entry_eq, NULL); |
b15e6682 AO |
4695 | if (g->got_entries == NULL) |
4696 | return FALSE; | |
c224138d RS |
4697 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4698 | mips_got_page_entry_eq, NULL); | |
4699 | if (g->got_page_entries == NULL) | |
4700 | return FALSE; | |
a8028dd0 | 4701 | htab->got_info = g; |
f0abc2a1 | 4702 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
4703 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4704 | ||
861fb55a DJ |
4705 | /* We also need a .got.plt section when generating PLTs. */ |
4706 | s = bfd_make_section_with_flags (abfd, ".got.plt", | |
4707 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4708 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4709 | if (s == NULL) | |
4710 | return FALSE; | |
4711 | htab->sgotplt = s; | |
0a44bf69 | 4712 | |
b34976b6 | 4713 | return TRUE; |
b49e97c9 | 4714 | } |
b49e97c9 | 4715 | \f |
0a44bf69 RS |
4716 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4717 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4718 | shared objects; they are not used in executables. */ | |
4719 | ||
4720 | static bfd_boolean | |
4721 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4722 | { | |
4723 | return (mips_elf_hash_table (info)->is_vxworks | |
4724 | && info->shared | |
4725 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4726 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4727 | } | |
861fb55a DJ |
4728 | |
4729 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
4730 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
4731 | which determines whether the destination function ever requires a | |
4732 | stub. */ | |
4733 | ||
4734 | static bfd_boolean | |
4735 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type) | |
4736 | { | |
4737 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
4738 | where the onus is on the compiler or programmer to perform any | |
4739 | necessary initialization of $25. Sometimes such initialization | |
4740 | is unnecessary; for example, -mno-shared functions do not use | |
4741 | the incoming value of $25, and may therefore be called directly. */ | |
4742 | if (PIC_OBJECT_P (input_bfd)) | |
4743 | return FALSE; | |
4744 | ||
4745 | switch (r_type) | |
4746 | { | |
4747 | case R_MIPS_26: | |
4748 | case R_MIPS_PC16: | |
4749 | case R_MIPS16_26: | |
4750 | return TRUE; | |
4751 | ||
4752 | default: | |
4753 | return FALSE; | |
4754 | } | |
4755 | } | |
0a44bf69 | 4756 | \f |
b49e97c9 TS |
4757 | /* Calculate the value produced by the RELOCATION (which comes from |
4758 | the INPUT_BFD). The ADDEND is the addend to use for this | |
4759 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
4760 | ||
4761 | The result of the relocation calculation is stored in VALUEP. | |
4762 | REQUIRE_JALXP indicates whether or not the opcode used with this | |
4763 | relocation must be JALX. | |
4764 | ||
4765 | This function returns bfd_reloc_continue if the caller need take no | |
4766 | further action regarding this relocation, bfd_reloc_notsupported if | |
4767 | something goes dramatically wrong, bfd_reloc_overflow if an | |
4768 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
4769 | ||
4770 | static bfd_reloc_status_type | |
9719ad41 RS |
4771 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
4772 | asection *input_section, | |
4773 | struct bfd_link_info *info, | |
4774 | const Elf_Internal_Rela *relocation, | |
4775 | bfd_vma addend, reloc_howto_type *howto, | |
4776 | Elf_Internal_Sym *local_syms, | |
4777 | asection **local_sections, bfd_vma *valuep, | |
4778 | const char **namep, bfd_boolean *require_jalxp, | |
4779 | bfd_boolean save_addend) | |
b49e97c9 TS |
4780 | { |
4781 | /* The eventual value we will return. */ | |
4782 | bfd_vma value; | |
4783 | /* The address of the symbol against which the relocation is | |
4784 | occurring. */ | |
4785 | bfd_vma symbol = 0; | |
4786 | /* The final GP value to be used for the relocatable, executable, or | |
4787 | shared object file being produced. */ | |
0a61c8c2 | 4788 | bfd_vma gp; |
b49e97c9 TS |
4789 | /* The place (section offset or address) of the storage unit being |
4790 | relocated. */ | |
4791 | bfd_vma p; | |
4792 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 4793 | bfd_vma gp0; |
b49e97c9 TS |
4794 | /* The offset into the global offset table at which the address of |
4795 | the relocation entry symbol, adjusted by the addend, resides | |
4796 | during execution. */ | |
4797 | bfd_vma g = MINUS_ONE; | |
4798 | /* The section in which the symbol referenced by the relocation is | |
4799 | located. */ | |
4800 | asection *sec = NULL; | |
4801 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 4802 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 4803 | symbol. */ |
b34976b6 AM |
4804 | bfd_boolean local_p, was_local_p; |
4805 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
4806 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
4807 | /* TRUE if the symbol referred to by this relocation is |
4808 | "__gnu_local_gp". */ | |
4809 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
4810 | Elf_Internal_Shdr *symtab_hdr; |
4811 | size_t extsymoff; | |
4812 | unsigned long r_symndx; | |
4813 | int r_type; | |
b34976b6 | 4814 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 4815 | relocation value. */ |
b34976b6 AM |
4816 | bfd_boolean overflowed_p; |
4817 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
4818 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
0a44bf69 RS |
4819 | struct mips_elf_link_hash_table *htab; |
4820 | bfd *dynobj; | |
4821 | ||
4822 | dynobj = elf_hash_table (info)->dynobj; | |
4823 | htab = mips_elf_hash_table (info); | |
b49e97c9 TS |
4824 | |
4825 | /* Parse the relocation. */ | |
4826 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4827 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
4828 | p = (input_section->output_section->vma | |
4829 | + input_section->output_offset | |
4830 | + relocation->r_offset); | |
4831 | ||
4832 | /* Assume that there will be no overflow. */ | |
b34976b6 | 4833 | overflowed_p = FALSE; |
b49e97c9 TS |
4834 | |
4835 | /* Figure out whether or not the symbol is local, and get the offset | |
4836 | used in the array of hash table entries. */ | |
4837 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4838 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 4839 | local_sections, FALSE); |
bce03d3d | 4840 | was_local_p = local_p; |
b49e97c9 TS |
4841 | if (! elf_bad_symtab (input_bfd)) |
4842 | extsymoff = symtab_hdr->sh_info; | |
4843 | else | |
4844 | { | |
4845 | /* The symbol table does not follow the rule that local symbols | |
4846 | must come before globals. */ | |
4847 | extsymoff = 0; | |
4848 | } | |
4849 | ||
4850 | /* Figure out the value of the symbol. */ | |
4851 | if (local_p) | |
4852 | { | |
4853 | Elf_Internal_Sym *sym; | |
4854 | ||
4855 | sym = local_syms + r_symndx; | |
4856 | sec = local_sections[r_symndx]; | |
4857 | ||
4858 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
4859 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
4860 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 4861 | symbol += sym->st_value; |
d4df96e6 L |
4862 | if ((sec->flags & SEC_MERGE) |
4863 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4864 | { | |
4865 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
4866 | addend -= symbol; | |
4867 | addend += sec->output_section->vma + sec->output_offset; | |
4868 | } | |
b49e97c9 TS |
4869 | |
4870 | /* MIPS16 text labels should be treated as odd. */ | |
30c09090 | 4871 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
4872 | ++symbol; |
4873 | ||
4874 | /* Record the name of this symbol, for our caller. */ | |
4875 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
4876 | symtab_hdr->sh_link, | |
4877 | sym->st_name); | |
4878 | if (*namep == '\0') | |
4879 | *namep = bfd_section_name (input_bfd, sec); | |
4880 | ||
30c09090 | 4881 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
b49e97c9 TS |
4882 | } |
4883 | else | |
4884 | { | |
560e09e9 NC |
4885 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
4886 | ||
b49e97c9 TS |
4887 | /* For global symbols we look up the symbol in the hash-table. */ |
4888 | h = ((struct mips_elf_link_hash_entry *) | |
4889 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
4890 | /* Find the real hash-table entry for this symbol. */ | |
4891 | while (h->root.root.type == bfd_link_hash_indirect | |
4892 | || h->root.root.type == bfd_link_hash_warning) | |
4893 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4894 | ||
4895 | /* Record the name of this symbol, for our caller. */ | |
4896 | *namep = h->root.root.root.string; | |
4897 | ||
4898 | /* See if this is the special _gp_disp symbol. Note that such a | |
4899 | symbol must always be a global symbol. */ | |
560e09e9 | 4900 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
4901 | && ! NEWABI_P (input_bfd)) |
4902 | { | |
4903 | /* Relocations against _gp_disp are permitted only with | |
4904 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 4905 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
4906 | return bfd_reloc_notsupported; |
4907 | ||
b34976b6 | 4908 | gp_disp_p = TRUE; |
b49e97c9 | 4909 | } |
bbe506e8 TS |
4910 | /* See if this is the special _gp symbol. Note that such a |
4911 | symbol must always be a global symbol. */ | |
4912 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
4913 | gnu_local_gp_p = TRUE; | |
4914 | ||
4915 | ||
b49e97c9 TS |
4916 | /* If this symbol is defined, calculate its address. Note that |
4917 | _gp_disp is a magic symbol, always implicitly defined by the | |
4918 | linker, so it's inappropriate to check to see whether or not | |
4919 | its defined. */ | |
4920 | else if ((h->root.root.type == bfd_link_hash_defined | |
4921 | || h->root.root.type == bfd_link_hash_defweak) | |
4922 | && h->root.root.u.def.section) | |
4923 | { | |
4924 | sec = h->root.root.u.def.section; | |
4925 | if (sec->output_section) | |
4926 | symbol = (h->root.root.u.def.value | |
4927 | + sec->output_section->vma | |
4928 | + sec->output_offset); | |
4929 | else | |
4930 | symbol = h->root.root.u.def.value; | |
4931 | } | |
4932 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
4933 | /* We allow relocations against undefined weak symbols, giving | |
4934 | it the value zero, so that you can undefined weak functions | |
4935 | and check to see if they exist by looking at their | |
4936 | addresses. */ | |
4937 | symbol = 0; | |
59c2e50f | 4938 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
4939 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
4940 | symbol = 0; | |
a4d0f181 TS |
4941 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
4942 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
4943 | { |
4944 | /* If this is a dynamic link, we should have created a | |
4945 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
4946 | in in _bfd_mips_elf_create_dynamic_sections. | |
4947 | Otherwise, we should define the symbol with a value of 0. | |
4948 | FIXME: It should probably get into the symbol table | |
4949 | somehow as well. */ | |
4950 | BFD_ASSERT (! info->shared); | |
4951 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
4952 | symbol = 0; | |
4953 | } | |
5e2b0d47 NC |
4954 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
4955 | { | |
4956 | /* This is an optional symbol - an Irix specific extension to the | |
4957 | ELF spec. Ignore it for now. | |
4958 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
4959 | than simply ignoring them, but we do not handle this for now. | |
4960 | For information see the "64-bit ELF Object File Specification" | |
4961 | which is available from here: | |
4962 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
4963 | symbol = 0; | |
4964 | } | |
b49e97c9 TS |
4965 | else |
4966 | { | |
4967 | if (! ((*info->callbacks->undefined_symbol) | |
4968 | (info, h->root.root.root.string, input_bfd, | |
4969 | input_section, relocation->r_offset, | |
59c2e50f L |
4970 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) |
4971 | || ELF_ST_VISIBILITY (h->root.other)))) | |
b49e97c9 TS |
4972 | return bfd_reloc_undefined; |
4973 | symbol = 0; | |
4974 | } | |
4975 | ||
30c09090 | 4976 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
b49e97c9 TS |
4977 | } |
4978 | ||
738e5348 RS |
4979 | /* If this is a reference to a 16-bit function with a stub, we need |
4980 | to redirect the relocation to the stub unless: | |
4981 | ||
4982 | (a) the relocation is for a MIPS16 JAL; | |
4983 | ||
4984 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
4985 | non-MIPS16 uses of the GOT slot; or | |
4986 | ||
4987 | (c) the section allows direct references to MIPS16 functions. */ | |
4988 | if (r_type != R_MIPS16_26 | |
4989 | && !info->relocatable | |
4990 | && ((h != NULL | |
4991 | && h->fn_stub != NULL | |
4992 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 TS |
4993 | || (local_p |
4994 | && elf_tdata (input_bfd)->local_stubs != NULL | |
b49e97c9 | 4995 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
738e5348 | 4996 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
4997 | { |
4998 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
4999 | have already noticed that we were going to need the | |
5000 | stub. */ | |
5001 | if (local_p) | |
5002 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
5003 | else | |
5004 | { | |
5005 | BFD_ASSERT (h->need_fn_stub); | |
5006 | sec = h->fn_stub; | |
5007 | } | |
5008 | ||
5009 | symbol = sec->output_section->vma + sec->output_offset; | |
f38c2df5 TS |
5010 | /* The target is 16-bit, but the stub isn't. */ |
5011 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
5012 | } |
5013 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
5014 | need to redirect the call to the stub. Note that we specifically |
5015 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
5016 | use an indirect stub instead. */ | |
1049f94e | 5017 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 5018 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 TS |
5019 | || (local_p |
5020 | && elf_tdata (input_bfd)->local_call_stubs != NULL | |
5021 | && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
5022 | && !target_is_16_bit_code_p) |
5023 | { | |
b9d58d71 TS |
5024 | if (local_p) |
5025 | sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx]; | |
5026 | else | |
b49e97c9 | 5027 | { |
b9d58d71 TS |
5028 | /* If both call_stub and call_fp_stub are defined, we can figure |
5029 | out which one to use by checking which one appears in the input | |
5030 | file. */ | |
5031 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5032 | { |
b9d58d71 TS |
5033 | asection *o; |
5034 | ||
5035 | sec = NULL; | |
5036 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5037 | { |
b9d58d71 TS |
5038 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5039 | { | |
5040 | sec = h->call_fp_stub; | |
5041 | break; | |
5042 | } | |
b49e97c9 | 5043 | } |
b9d58d71 TS |
5044 | if (sec == NULL) |
5045 | sec = h->call_stub; | |
b49e97c9 | 5046 | } |
b9d58d71 | 5047 | else if (h->call_stub != NULL) |
b49e97c9 | 5048 | sec = h->call_stub; |
b9d58d71 TS |
5049 | else |
5050 | sec = h->call_fp_stub; | |
5051 | } | |
b49e97c9 | 5052 | |
eea6121a | 5053 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5054 | symbol = sec->output_section->vma + sec->output_offset; |
5055 | } | |
861fb55a DJ |
5056 | /* If this is a direct call to a PIC function, redirect to the |
5057 | non-PIC stub. */ | |
5058 | else if (h != NULL && h->la25_stub | |
5059 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type)) | |
5060 | symbol = (h->la25_stub->stub_section->output_section->vma | |
5061 | + h->la25_stub->stub_section->output_offset | |
5062 | + h->la25_stub->offset); | |
b49e97c9 TS |
5063 | |
5064 | /* Calls from 16-bit code to 32-bit code and vice versa require the | |
5065 | special jalx instruction. */ | |
1049f94e | 5066 | *require_jalxp = (!info->relocatable |
b49e97c9 TS |
5067 | && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p) |
5068 | || ((r_type == R_MIPS_26) && target_is_16_bit_code_p))); | |
5069 | ||
5070 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 5071 | local_sections, TRUE); |
b49e97c9 | 5072 | |
0a61c8c2 RS |
5073 | gp0 = _bfd_get_gp_value (input_bfd); |
5074 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5075 | if (htab->got_info) |
a8028dd0 | 5076 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5077 | |
5078 | if (gnu_local_gp_p) | |
5079 | symbol = gp; | |
5080 | ||
5081 | /* If we haven't already determined the GOT offset, oand we're going | |
5082 | to need it, get it now. */ | |
b49e97c9 TS |
5083 | switch (r_type) |
5084 | { | |
0fdc1bf1 | 5085 | case R_MIPS_GOT_PAGE: |
93a2b7ae | 5086 | case R_MIPS_GOT_OFST: |
d25aed71 RS |
5087 | /* We need to decay to GOT_DISP/addend if the symbol doesn't |
5088 | bind locally. */ | |
5089 | local_p = local_p || _bfd_elf_symbol_refs_local_p (&h->root, info, 1); | |
93a2b7ae | 5090 | if (local_p || r_type == R_MIPS_GOT_OFST) |
0fdc1bf1 AO |
5091 | break; |
5092 | /* Fall through. */ | |
5093 | ||
738e5348 RS |
5094 | case R_MIPS16_CALL16: |
5095 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5096 | case R_MIPS_CALL16: |
5097 | case R_MIPS_GOT16: | |
5098 | case R_MIPS_GOT_DISP: | |
5099 | case R_MIPS_GOT_HI16: | |
5100 | case R_MIPS_CALL_HI16: | |
5101 | case R_MIPS_GOT_LO16: | |
5102 | case R_MIPS_CALL_LO16: | |
0f20cc35 DJ |
5103 | case R_MIPS_TLS_GD: |
5104 | case R_MIPS_TLS_GOTTPREL: | |
5105 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5106 | /* Find the index into the GOT where this value is located. */ |
0f20cc35 DJ |
5107 | if (r_type == R_MIPS_TLS_LDM) |
5108 | { | |
0a44bf69 | 5109 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5110 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5111 | if (g == MINUS_ONE) |
5112 | return bfd_reloc_outofrange; | |
5113 | } | |
5114 | else if (!local_p) | |
b49e97c9 | 5115 | { |
0a44bf69 RS |
5116 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5117 | entry, which is initialized to point at the PLT stub. */ | |
5118 | if (htab->is_vxworks | |
5119 | && (r_type == R_MIPS_CALL_HI16 | |
5120 | || r_type == R_MIPS_CALL_LO16 | |
738e5348 | 5121 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5122 | { |
5123 | BFD_ASSERT (addend == 0); | |
5124 | BFD_ASSERT (h->root.needs_plt); | |
5125 | g = mips_elf_gotplt_index (info, &h->root); | |
5126 | } | |
5127 | else | |
b49e97c9 | 5128 | { |
0a44bf69 RS |
5129 | /* GOT_PAGE may take a non-zero addend, that is ignored in a |
5130 | GOT_PAGE relocation that decays to GOT_DISP because the | |
5131 | symbol turns out to be global. The addend is then added | |
5132 | as GOT_OFST. */ | |
5133 | BFD_ASSERT (addend == 0 || r_type == R_MIPS_GOT_PAGE); | |
5134 | g = mips_elf_global_got_index (dynobj, input_bfd, | |
5135 | &h->root, r_type, info); | |
5136 | if (h->tls_type == GOT_NORMAL | |
5137 | && (! elf_hash_table(info)->dynamic_sections_created | |
5138 | || (info->shared | |
5139 | && (info->symbolic || h->root.forced_local) | |
5140 | && h->root.def_regular))) | |
a8028dd0 RS |
5141 | /* This is a static link or a -Bsymbolic link. The |
5142 | symbol is defined locally, or was forced to be local. | |
5143 | We must initialize this entry in the GOT. */ | |
5144 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->sgot->contents + g); | |
b49e97c9 TS |
5145 | } |
5146 | } | |
0a44bf69 | 5147 | else if (!htab->is_vxworks |
738e5348 | 5148 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5149 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5150 | break; |
5151 | else | |
5152 | { | |
5c18022e | 5153 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5154 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5155 | if (g == MINUS_ONE) |
5156 | return bfd_reloc_outofrange; | |
5157 | } | |
5158 | ||
5159 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5160 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5161 | break; |
b49e97c9 TS |
5162 | } |
5163 | ||
0a44bf69 RS |
5164 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5165 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5166 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5167 | { | |
5168 | Elf_Internal_Rela outrel; | |
5169 | bfd_byte *loc; | |
5170 | asection *s; | |
5171 | ||
5172 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5173 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5174 | ||
5175 | outrel.r_offset = (input_section->output_section->vma | |
5176 | + input_section->output_offset | |
5177 | + relocation->r_offset); | |
5178 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5179 | outrel.r_addend = addend; | |
5180 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5181 | |
5182 | /* If we've written this relocation for a readonly section, | |
5183 | we need to set DF_TEXTREL again, so that we do not delete the | |
5184 | DT_TEXTREL tag. */ | |
5185 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5186 | info->flags |= DF_TEXTREL; | |
5187 | ||
0a44bf69 RS |
5188 | *valuep = 0; |
5189 | return bfd_reloc_ok; | |
5190 | } | |
5191 | ||
b49e97c9 TS |
5192 | /* Figure out what kind of relocation is being performed. */ |
5193 | switch (r_type) | |
5194 | { | |
5195 | case R_MIPS_NONE: | |
5196 | return bfd_reloc_continue; | |
5197 | ||
5198 | case R_MIPS_16: | |
a7ebbfdf | 5199 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
5200 | overflowed_p = mips_elf_overflow_p (value, 16); |
5201 | break; | |
5202 | ||
5203 | case R_MIPS_32: | |
5204 | case R_MIPS_REL32: | |
5205 | case R_MIPS_64: | |
5206 | if ((info->shared | |
861fb55a | 5207 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5208 | && h != NULL |
f5385ebf | 5209 | && h->root.def_dynamic |
861fb55a DJ |
5210 | && !h->root.def_regular |
5211 | && !h->has_static_relocs)) | |
b49e97c9 | 5212 | && r_symndx != 0 |
9a59ad6b DJ |
5213 | && (h == NULL |
5214 | || h->root.root.type != bfd_link_hash_undefweak | |
5215 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
5216 | && (input_section->flags & SEC_ALLOC) != 0) |
5217 | { | |
861fb55a | 5218 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5219 | where the symbol will end up. So, we create a relocation |
5220 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5221 | linker. We must do the same for executable references to |
5222 | shared library symbols, unless we've decided to use copy | |
5223 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5224 | value = addend; |
5225 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5226 | info, | |
5227 | relocation, | |
5228 | h, | |
5229 | sec, | |
5230 | symbol, | |
5231 | &value, | |
5232 | input_section)) | |
5233 | return bfd_reloc_undefined; | |
5234 | } | |
5235 | else | |
5236 | { | |
5237 | if (r_type != R_MIPS_REL32) | |
5238 | value = symbol + addend; | |
5239 | else | |
5240 | value = addend; | |
5241 | } | |
5242 | value &= howto->dst_mask; | |
092dcd75 CD |
5243 | break; |
5244 | ||
5245 | case R_MIPS_PC32: | |
5246 | value = symbol + addend - p; | |
5247 | value &= howto->dst_mask; | |
b49e97c9 TS |
5248 | break; |
5249 | ||
b49e97c9 TS |
5250 | case R_MIPS16_26: |
5251 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5252 | R_MIPS_26. It's only the storage of the relocated field into | |
5253 | the output file that's different. That's handled in | |
5254 | mips_elf_perform_relocation. So, we just fall through to the | |
5255 | R_MIPS_26 case here. */ | |
5256 | case R_MIPS_26: | |
5257 | if (local_p) | |
30ac9238 | 5258 | value = ((addend | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
b49e97c9 | 5259 | else |
728b2f21 ILT |
5260 | { |
5261 | value = (_bfd_mips_elf_sign_extend (addend, 28) + symbol) >> 2; | |
c314987d RS |
5262 | if (h->root.root.type != bfd_link_hash_undefweak) |
5263 | overflowed_p = (value >> 26) != ((p + 4) >> 28); | |
728b2f21 | 5264 | } |
b49e97c9 TS |
5265 | value &= howto->dst_mask; |
5266 | break; | |
5267 | ||
0f20cc35 DJ |
5268 | case R_MIPS_TLS_DTPREL_HI16: |
5269 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) | |
5270 | & howto->dst_mask); | |
5271 | break; | |
5272 | ||
5273 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5274 | case R_MIPS_TLS_DTPREL32: |
5275 | case R_MIPS_TLS_DTPREL64: | |
0f20cc35 DJ |
5276 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5277 | break; | |
5278 | ||
5279 | case R_MIPS_TLS_TPREL_HI16: | |
5280 | value = (mips_elf_high (addend + symbol - tprel_base (info)) | |
5281 | & howto->dst_mask); | |
5282 | break; | |
5283 | ||
5284 | case R_MIPS_TLS_TPREL_LO16: | |
5285 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; | |
5286 | break; | |
5287 | ||
b49e97c9 | 5288 | case R_MIPS_HI16: |
d6f16593 | 5289 | case R_MIPS16_HI16: |
b49e97c9 TS |
5290 | if (!gp_disp_p) |
5291 | { | |
5292 | value = mips_elf_high (addend + symbol); | |
5293 | value &= howto->dst_mask; | |
5294 | } | |
5295 | else | |
5296 | { | |
d6f16593 MR |
5297 | /* For MIPS16 ABI code we generate this sequence |
5298 | 0: li $v0,%hi(_gp_disp) | |
5299 | 4: addiupc $v1,%lo(_gp_disp) | |
5300 | 8: sll $v0,16 | |
5301 | 12: addu $v0,$v1 | |
5302 | 14: move $gp,$v0 | |
5303 | So the offsets of hi and lo relocs are the same, but the | |
5304 | $pc is four higher than $t9 would be, so reduce | |
5305 | both reloc addends by 4. */ | |
5306 | if (r_type == R_MIPS16_HI16) | |
5307 | value = mips_elf_high (addend + gp - p - 4); | |
5308 | else | |
5309 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5310 | overflowed_p = mips_elf_overflow_p (value, 16); |
5311 | } | |
5312 | break; | |
5313 | ||
5314 | case R_MIPS_LO16: | |
d6f16593 | 5315 | case R_MIPS16_LO16: |
b49e97c9 TS |
5316 | if (!gp_disp_p) |
5317 | value = (symbol + addend) & howto->dst_mask; | |
5318 | else | |
5319 | { | |
d6f16593 MR |
5320 | /* See the comment for R_MIPS16_HI16 above for the reason |
5321 | for this conditional. */ | |
5322 | if (r_type == R_MIPS16_LO16) | |
5323 | value = addend + gp - p; | |
5324 | else | |
5325 | value = addend + gp - p + 4; | |
b49e97c9 | 5326 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5327 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5328 | _gp_disp are normally generated from the .cpload |
5329 | pseudo-op. It generates code that normally looks like | |
5330 | this: | |
5331 | ||
5332 | lui $gp,%hi(_gp_disp) | |
5333 | addiu $gp,$gp,%lo(_gp_disp) | |
5334 | addu $gp,$gp,$t9 | |
5335 | ||
5336 | Here $t9 holds the address of the function being called, | |
5337 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5338 | relocation can easily overflow in this situation, but the | |
5339 | R_MIPS_HI16 relocation will handle the overflow. | |
5340 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5341 | not check for overflow here. */ | |
5342 | } | |
5343 | break; | |
5344 | ||
5345 | case R_MIPS_LITERAL: | |
5346 | /* Because we don't merge literal sections, we can handle this | |
5347 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5348 | shared literals, and then we will need to additional work | |
5349 | here. */ | |
5350 | ||
5351 | /* Fall through. */ | |
5352 | ||
5353 | case R_MIPS16_GPREL: | |
5354 | /* The R_MIPS16_GPREL performs the same calculation as | |
5355 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5356 | order. We don't need to do anything special here; the | |
5357 | differences are handled in mips_elf_perform_relocation. */ | |
5358 | case R_MIPS_GPREL16: | |
bce03d3d AO |
5359 | /* Only sign-extend the addend if it was extracted from the |
5360 | instruction. If the addend was separate, leave it alone, | |
5361 | otherwise we may lose significant bits. */ | |
5362 | if (howto->partial_inplace) | |
a7ebbfdf | 5363 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5364 | value = symbol + addend - gp; |
5365 | /* If the symbol was local, any earlier relocatable links will | |
5366 | have adjusted its addend with the gp offset, so compensate | |
5367 | for that now. Don't do it for symbols forced local in this | |
5368 | link, though, since they won't have had the gp offset applied | |
5369 | to them before. */ | |
5370 | if (was_local_p) | |
5371 | value += gp0; | |
b49e97c9 TS |
5372 | overflowed_p = mips_elf_overflow_p (value, 16); |
5373 | break; | |
5374 | ||
738e5348 RS |
5375 | case R_MIPS16_GOT16: |
5376 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
5377 | case R_MIPS_GOT16: |
5378 | case R_MIPS_CALL16: | |
0a44bf69 | 5379 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 5380 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 5381 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 5382 | { |
b34976b6 | 5383 | bfd_boolean forced; |
b49e97c9 | 5384 | |
b49e97c9 | 5385 | forced = ! mips_elf_local_relocation_p (input_bfd, relocation, |
b34976b6 | 5386 | local_sections, FALSE); |
5c18022e | 5387 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
f4416af6 | 5388 | symbol + addend, forced); |
b49e97c9 TS |
5389 | if (value == MINUS_ONE) |
5390 | return bfd_reloc_outofrange; | |
5391 | value | |
a8028dd0 | 5392 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5393 | overflowed_p = mips_elf_overflow_p (value, 16); |
5394 | break; | |
5395 | } | |
5396 | ||
5397 | /* Fall through. */ | |
5398 | ||
0f20cc35 DJ |
5399 | case R_MIPS_TLS_GD: |
5400 | case R_MIPS_TLS_GOTTPREL: | |
5401 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5402 | case R_MIPS_GOT_DISP: |
0fdc1bf1 | 5403 | got_disp: |
b49e97c9 TS |
5404 | value = g; |
5405 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5406 | break; | |
5407 | ||
5408 | case R_MIPS_GPREL32: | |
bce03d3d AO |
5409 | value = (addend + symbol + gp0 - gp); |
5410 | if (!save_addend) | |
5411 | value &= howto->dst_mask; | |
b49e97c9 TS |
5412 | break; |
5413 | ||
5414 | case R_MIPS_PC16: | |
bad36eac DJ |
5415 | case R_MIPS_GNU_REL16_S2: |
5416 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
5417 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
5418 | value >>= howto->rightshift; |
5419 | value &= howto->dst_mask; | |
b49e97c9 TS |
5420 | break; |
5421 | ||
5422 | case R_MIPS_GOT_HI16: | |
5423 | case R_MIPS_CALL_HI16: | |
5424 | /* We're allowed to handle these two relocations identically. | |
5425 | The dynamic linker is allowed to handle the CALL relocations | |
5426 | differently by creating a lazy evaluation stub. */ | |
5427 | value = g; | |
5428 | value = mips_elf_high (value); | |
5429 | value &= howto->dst_mask; | |
5430 | break; | |
5431 | ||
5432 | case R_MIPS_GOT_LO16: | |
5433 | case R_MIPS_CALL_LO16: | |
5434 | value = g & howto->dst_mask; | |
5435 | break; | |
5436 | ||
5437 | case R_MIPS_GOT_PAGE: | |
0fdc1bf1 AO |
5438 | /* GOT_PAGE relocations that reference non-local symbols decay |
5439 | to GOT_DISP. The corresponding GOT_OFST relocation decays to | |
5440 | 0. */ | |
93a2b7ae | 5441 | if (! local_p) |
0fdc1bf1 | 5442 | goto got_disp; |
5c18022e | 5443 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
5444 | if (value == MINUS_ONE) |
5445 | return bfd_reloc_outofrange; | |
a8028dd0 | 5446 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5447 | overflowed_p = mips_elf_overflow_p (value, 16); |
5448 | break; | |
5449 | ||
5450 | case R_MIPS_GOT_OFST: | |
93a2b7ae | 5451 | if (local_p) |
5c18022e | 5452 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
5453 | else |
5454 | value = addend; | |
b49e97c9 TS |
5455 | overflowed_p = mips_elf_overflow_p (value, 16); |
5456 | break; | |
5457 | ||
5458 | case R_MIPS_SUB: | |
5459 | value = symbol - addend; | |
5460 | value &= howto->dst_mask; | |
5461 | break; | |
5462 | ||
5463 | case R_MIPS_HIGHER: | |
5464 | value = mips_elf_higher (addend + symbol); | |
5465 | value &= howto->dst_mask; | |
5466 | break; | |
5467 | ||
5468 | case R_MIPS_HIGHEST: | |
5469 | value = mips_elf_highest (addend + symbol); | |
5470 | value &= howto->dst_mask; | |
5471 | break; | |
5472 | ||
5473 | case R_MIPS_SCN_DISP: | |
5474 | value = symbol + addend - sec->output_offset; | |
5475 | value &= howto->dst_mask; | |
5476 | break; | |
5477 | ||
b49e97c9 | 5478 | case R_MIPS_JALR: |
1367d393 ILT |
5479 | /* This relocation is only a hint. In some cases, we optimize |
5480 | it into a bal instruction. But we don't try to optimize | |
5481 | branches to the PLT; that will wind up wasting time. */ | |
5482 | if (h != NULL && h->root.plt.offset != (bfd_vma) -1) | |
5483 | return bfd_reloc_continue; | |
5484 | value = symbol + addend; | |
5485 | break; | |
b49e97c9 | 5486 | |
1367d393 | 5487 | case R_MIPS_PJUMP: |
b49e97c9 TS |
5488 | case R_MIPS_GNU_VTINHERIT: |
5489 | case R_MIPS_GNU_VTENTRY: | |
5490 | /* We don't do anything with these at present. */ | |
5491 | return bfd_reloc_continue; | |
5492 | ||
5493 | default: | |
5494 | /* An unrecognized relocation type. */ | |
5495 | return bfd_reloc_notsupported; | |
5496 | } | |
5497 | ||
5498 | /* Store the VALUE for our caller. */ | |
5499 | *valuep = value; | |
5500 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
5501 | } | |
5502 | ||
5503 | /* Obtain the field relocated by RELOCATION. */ | |
5504 | ||
5505 | static bfd_vma | |
9719ad41 RS |
5506 | mips_elf_obtain_contents (reloc_howto_type *howto, |
5507 | const Elf_Internal_Rela *relocation, | |
5508 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
5509 | { |
5510 | bfd_vma x; | |
5511 | bfd_byte *location = contents + relocation->r_offset; | |
5512 | ||
5513 | /* Obtain the bytes. */ | |
5514 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
5515 | ||
b49e97c9 TS |
5516 | return x; |
5517 | } | |
5518 | ||
5519 | /* It has been determined that the result of the RELOCATION is the | |
5520 | VALUE. Use HOWTO to place VALUE into the output file at the | |
5521 | appropriate position. The SECTION is the section to which the | |
b34976b6 | 5522 | relocation applies. If REQUIRE_JALX is TRUE, then the opcode used |
b49e97c9 TS |
5523 | for the relocation must be either JAL or JALX, and it is |
5524 | unconditionally converted to JALX. | |
5525 | ||
b34976b6 | 5526 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 5527 | |
b34976b6 | 5528 | static bfd_boolean |
9719ad41 RS |
5529 | mips_elf_perform_relocation (struct bfd_link_info *info, |
5530 | reloc_howto_type *howto, | |
5531 | const Elf_Internal_Rela *relocation, | |
5532 | bfd_vma value, bfd *input_bfd, | |
5533 | asection *input_section, bfd_byte *contents, | |
5534 | bfd_boolean require_jalx) | |
b49e97c9 TS |
5535 | { |
5536 | bfd_vma x; | |
5537 | bfd_byte *location; | |
5538 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5539 | ||
5540 | /* Figure out where the relocation is occurring. */ | |
5541 | location = contents + relocation->r_offset; | |
5542 | ||
d6f16593 MR |
5543 | _bfd_mips16_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
5544 | ||
b49e97c9 TS |
5545 | /* Obtain the current value. */ |
5546 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5547 | ||
5548 | /* Clear the field we are setting. */ | |
5549 | x &= ~howto->dst_mask; | |
5550 | ||
b49e97c9 TS |
5551 | /* Set the field. */ |
5552 | x |= (value & howto->dst_mask); | |
5553 | ||
5554 | /* If required, turn JAL into JALX. */ | |
5555 | if (require_jalx) | |
5556 | { | |
b34976b6 | 5557 | bfd_boolean ok; |
b49e97c9 TS |
5558 | bfd_vma opcode = x >> 26; |
5559 | bfd_vma jalx_opcode; | |
5560 | ||
5561 | /* Check to see if the opcode is already JAL or JALX. */ | |
5562 | if (r_type == R_MIPS16_26) | |
5563 | { | |
5564 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5565 | jalx_opcode = 0x7; | |
5566 | } | |
5567 | else | |
5568 | { | |
5569 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5570 | jalx_opcode = 0x1d; | |
5571 | } | |
5572 | ||
5573 | /* If the opcode is not JAL or JALX, there's a problem. */ | |
5574 | if (!ok) | |
5575 | { | |
5576 | (*_bfd_error_handler) | |
d003868e AM |
5577 | (_("%B: %A+0x%lx: jump to stub routine which is not jal"), |
5578 | input_bfd, | |
5579 | input_section, | |
b49e97c9 TS |
5580 | (unsigned long) relocation->r_offset); |
5581 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5582 | return FALSE; |
b49e97c9 TS |
5583 | } |
5584 | ||
5585 | /* Make this the JALX opcode. */ | |
5586 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5587 | } | |
5588 | ||
1367d393 ILT |
5589 | /* On the RM9000, bal is faster than jal, because bal uses branch |
5590 | prediction hardware. If we are linking for the RM9000, and we | |
5591 | see jal, and bal fits, use it instead. Note that this | |
5592 | transformation should be safe for all architectures. */ | |
5593 | if (bfd_get_mach (input_bfd) == bfd_mach_mips9000 | |
5594 | && !info->relocatable | |
5595 | && !require_jalx | |
5596 | && ((r_type == R_MIPS_26 && (x >> 26) == 0x3) /* jal addr */ | |
5597 | || (r_type == R_MIPS_JALR && x == 0x0320f809))) /* jalr t9 */ | |
5598 | { | |
5599 | bfd_vma addr; | |
5600 | bfd_vma dest; | |
5601 | bfd_signed_vma off; | |
5602 | ||
5603 | addr = (input_section->output_section->vma | |
5604 | + input_section->output_offset | |
5605 | + relocation->r_offset | |
5606 | + 4); | |
5607 | if (r_type == R_MIPS_26) | |
5608 | dest = (value << 2) | ((addr >> 28) << 28); | |
5609 | else | |
5610 | dest = value; | |
5611 | off = dest - addr; | |
5612 | if (off <= 0x1ffff && off >= -0x20000) | |
5613 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
5614 | } | |
5615 | ||
b49e97c9 TS |
5616 | /* Put the value into the output. */ |
5617 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 MR |
5618 | |
5619 | _bfd_mips16_elf_reloc_shuffle(input_bfd, r_type, !info->relocatable, | |
5620 | location); | |
5621 | ||
b34976b6 | 5622 | return TRUE; |
b49e97c9 | 5623 | } |
b49e97c9 | 5624 | \f |
b49e97c9 TS |
5625 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
5626 | is the original relocation, which is now being transformed into a | |
5627 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
5628 | caller should store the result in place of the original addend. */ | |
5629 | ||
b34976b6 | 5630 | static bfd_boolean |
9719ad41 RS |
5631 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
5632 | struct bfd_link_info *info, | |
5633 | const Elf_Internal_Rela *rel, | |
5634 | struct mips_elf_link_hash_entry *h, | |
5635 | asection *sec, bfd_vma symbol, | |
5636 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 5637 | { |
947216bf | 5638 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
5639 | asection *sreloc; |
5640 | bfd *dynobj; | |
5641 | int r_type; | |
5d41f0b6 RS |
5642 | long indx; |
5643 | bfd_boolean defined_p; | |
0a44bf69 | 5644 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 5645 | |
0a44bf69 | 5646 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
5647 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
5648 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 5649 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
5650 | BFD_ASSERT (sreloc != NULL); |
5651 | BFD_ASSERT (sreloc->contents != NULL); | |
5652 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 5653 | < sreloc->size); |
b49e97c9 | 5654 | |
b49e97c9 TS |
5655 | outrel[0].r_offset = |
5656 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
5657 | if (ABI_64_P (output_bfd)) |
5658 | { | |
5659 | outrel[1].r_offset = | |
5660 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
5661 | outrel[2].r_offset = | |
5662 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
5663 | } | |
b49e97c9 | 5664 | |
c5ae1840 | 5665 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 5666 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
5667 | return TRUE; |
5668 | ||
5669 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
5670 | { |
5671 | /* The relocation field has been converted into a relative value of | |
5672 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
5673 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 5674 | *addendp += symbol; |
5d41f0b6 | 5675 | return TRUE; |
0d591ff7 | 5676 | } |
b49e97c9 | 5677 | |
5d41f0b6 RS |
5678 | /* We must now calculate the dynamic symbol table index to use |
5679 | in the relocation. */ | |
5680 | if (h != NULL | |
6ece8836 TS |
5681 | && (!h->root.def_regular |
5682 | || (info->shared && !info->symbolic && !h->root.forced_local))) | |
5d41f0b6 RS |
5683 | { |
5684 | indx = h->root.dynindx; | |
5685 | if (SGI_COMPAT (output_bfd)) | |
5686 | defined_p = h->root.def_regular; | |
5687 | else | |
5688 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
5689 | relocation field. It therefore treats relocs against | |
5690 | defined symbols in the same way as relocs against | |
5691 | undefined symbols. */ | |
5692 | defined_p = FALSE; | |
5693 | } | |
b49e97c9 TS |
5694 | else |
5695 | { | |
5d41f0b6 RS |
5696 | if (sec != NULL && bfd_is_abs_section (sec)) |
5697 | indx = 0; | |
5698 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 5699 | { |
5d41f0b6 RS |
5700 | bfd_set_error (bfd_error_bad_value); |
5701 | return FALSE; | |
b49e97c9 TS |
5702 | } |
5703 | else | |
5704 | { | |
5d41f0b6 | 5705 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
5706 | if (indx == 0) |
5707 | { | |
5708 | asection *osec = htab->root.text_index_section; | |
5709 | indx = elf_section_data (osec)->dynindx; | |
5710 | } | |
5d41f0b6 RS |
5711 | if (indx == 0) |
5712 | abort (); | |
b49e97c9 TS |
5713 | } |
5714 | ||
5d41f0b6 RS |
5715 | /* Instead of generating a relocation using the section |
5716 | symbol, we may as well make it a fully relative | |
5717 | relocation. We want to avoid generating relocations to | |
5718 | local symbols because we used to generate them | |
5719 | incorrectly, without adding the original symbol value, | |
5720 | which is mandated by the ABI for section symbols. In | |
5721 | order to give dynamic loaders and applications time to | |
5722 | phase out the incorrect use, we refrain from emitting | |
5723 | section-relative relocations. It's not like they're | |
5724 | useful, after all. This should be a bit more efficient | |
5725 | as well. */ | |
5726 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
5727 | the ABI says that relocations against STN_UNDEF should have | |
5728 | a symbol value of 0. Irix rld honors this, so relocations | |
5729 | against STN_UNDEF have no effect. */ | |
5730 | if (!SGI_COMPAT (output_bfd)) | |
5731 | indx = 0; | |
5732 | defined_p = TRUE; | |
b49e97c9 TS |
5733 | } |
5734 | ||
5d41f0b6 RS |
5735 | /* If the relocation was previously an absolute relocation and |
5736 | this symbol will not be referred to by the relocation, we must | |
5737 | adjust it by the value we give it in the dynamic symbol table. | |
5738 | Otherwise leave the job up to the dynamic linker. */ | |
5739 | if (defined_p && r_type != R_MIPS_REL32) | |
5740 | *addendp += symbol; | |
5741 | ||
0a44bf69 RS |
5742 | if (htab->is_vxworks) |
5743 | /* VxWorks uses non-relative relocations for this. */ | |
5744 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
5745 | else | |
5746 | /* The relocation is always an REL32 relocation because we don't | |
5747 | know where the shared library will wind up at load-time. */ | |
5748 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
5749 | R_MIPS_REL32); | |
5750 | ||
5d41f0b6 RS |
5751 | /* For strict adherence to the ABI specification, we should |
5752 | generate a R_MIPS_64 relocation record by itself before the | |
5753 | _REL32/_64 record as well, such that the addend is read in as | |
5754 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
5755 | However, since none of the existing ELF64 MIPS dynamic | |
5756 | loaders seems to care, we don't waste space with these | |
5757 | artificial relocations. If this turns out to not be true, | |
5758 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
5759 | as to make room for a pair of dynamic relocations per | |
5760 | invocation if ABI_64_P, and here we should generate an | |
5761 | additional relocation record with R_MIPS_64 by itself for a | |
5762 | NULL symbol before this relocation record. */ | |
5763 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
5764 | ABI_64_P (output_bfd) | |
5765 | ? R_MIPS_64 | |
5766 | : R_MIPS_NONE); | |
5767 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
5768 | ||
5769 | /* Adjust the output offset of the relocation to reference the | |
5770 | correct location in the output file. */ | |
5771 | outrel[0].r_offset += (input_section->output_section->vma | |
5772 | + input_section->output_offset); | |
5773 | outrel[1].r_offset += (input_section->output_section->vma | |
5774 | + input_section->output_offset); | |
5775 | outrel[2].r_offset += (input_section->output_section->vma | |
5776 | + input_section->output_offset); | |
5777 | ||
b49e97c9 TS |
5778 | /* Put the relocation back out. We have to use the special |
5779 | relocation outputter in the 64-bit case since the 64-bit | |
5780 | relocation format is non-standard. */ | |
5781 | if (ABI_64_P (output_bfd)) | |
5782 | { | |
5783 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
5784 | (output_bfd, &outrel[0], | |
5785 | (sreloc->contents | |
5786 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
5787 | } | |
0a44bf69 RS |
5788 | else if (htab->is_vxworks) |
5789 | { | |
5790 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
5791 | outrel[0].r_addend = *addendp; | |
5792 | bfd_elf32_swap_reloca_out | |
5793 | (output_bfd, &outrel[0], | |
5794 | (sreloc->contents | |
5795 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
5796 | } | |
b49e97c9 | 5797 | else |
947216bf AM |
5798 | bfd_elf32_swap_reloc_out |
5799 | (output_bfd, &outrel[0], | |
5800 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 5801 | |
b49e97c9 TS |
5802 | /* We've now added another relocation. */ |
5803 | ++sreloc->reloc_count; | |
5804 | ||
5805 | /* Make sure the output section is writable. The dynamic linker | |
5806 | will be writing to it. */ | |
5807 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
5808 | |= SHF_WRITE; | |
5809 | ||
5810 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 5811 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 TS |
5812 | { |
5813 | asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
5814 | bfd_byte *cr; | |
5815 | ||
5816 | if (scpt) | |
5817 | { | |
5818 | Elf32_crinfo cptrel; | |
5819 | ||
5820 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5821 | cptrel.vaddr = (rel->r_offset | |
5822 | + input_section->output_section->vma | |
5823 | + input_section->output_offset); | |
5824 | if (r_type == R_MIPS_REL32) | |
5825 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
5826 | else | |
5827 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
5828 | mips_elf_set_cr_dist2to (cptrel, 0); | |
5829 | cptrel.konst = *addendp; | |
5830 | ||
5831 | cr = (scpt->contents | |
5832 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 5833 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
5834 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
5835 | ((Elf32_External_crinfo *) cr | |
5836 | + scpt->reloc_count)); | |
5837 | ++scpt->reloc_count; | |
5838 | } | |
5839 | } | |
5840 | ||
943284cc DJ |
5841 | /* If we've written this relocation for a readonly section, |
5842 | we need to set DF_TEXTREL again, so that we do not delete the | |
5843 | DT_TEXTREL tag. */ | |
5844 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5845 | info->flags |= DF_TEXTREL; | |
5846 | ||
b34976b6 | 5847 | return TRUE; |
b49e97c9 TS |
5848 | } |
5849 | \f | |
b49e97c9 TS |
5850 | /* Return the MACH for a MIPS e_flags value. */ |
5851 | ||
5852 | unsigned long | |
9719ad41 | 5853 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
5854 | { |
5855 | switch (flags & EF_MIPS_MACH) | |
5856 | { | |
5857 | case E_MIPS_MACH_3900: | |
5858 | return bfd_mach_mips3900; | |
5859 | ||
5860 | case E_MIPS_MACH_4010: | |
5861 | return bfd_mach_mips4010; | |
5862 | ||
5863 | case E_MIPS_MACH_4100: | |
5864 | return bfd_mach_mips4100; | |
5865 | ||
5866 | case E_MIPS_MACH_4111: | |
5867 | return bfd_mach_mips4111; | |
5868 | ||
00707a0e RS |
5869 | case E_MIPS_MACH_4120: |
5870 | return bfd_mach_mips4120; | |
5871 | ||
b49e97c9 TS |
5872 | case E_MIPS_MACH_4650: |
5873 | return bfd_mach_mips4650; | |
5874 | ||
00707a0e RS |
5875 | case E_MIPS_MACH_5400: |
5876 | return bfd_mach_mips5400; | |
5877 | ||
5878 | case E_MIPS_MACH_5500: | |
5879 | return bfd_mach_mips5500; | |
5880 | ||
0d2e43ed ILT |
5881 | case E_MIPS_MACH_9000: |
5882 | return bfd_mach_mips9000; | |
5883 | ||
b49e97c9 TS |
5884 | case E_MIPS_MACH_SB1: |
5885 | return bfd_mach_mips_sb1; | |
5886 | ||
350cc38d MS |
5887 | case E_MIPS_MACH_LS2E: |
5888 | return bfd_mach_mips_loongson_2e; | |
5889 | ||
5890 | case E_MIPS_MACH_LS2F: | |
5891 | return bfd_mach_mips_loongson_2f; | |
5892 | ||
6f179bd0 AN |
5893 | case E_MIPS_MACH_OCTEON: |
5894 | return bfd_mach_mips_octeon; | |
5895 | ||
52b6b6b9 JM |
5896 | case E_MIPS_MACH_XLR: |
5897 | return bfd_mach_mips_xlr; | |
5898 | ||
b49e97c9 TS |
5899 | default: |
5900 | switch (flags & EF_MIPS_ARCH) | |
5901 | { | |
5902 | default: | |
5903 | case E_MIPS_ARCH_1: | |
5904 | return bfd_mach_mips3000; | |
b49e97c9 TS |
5905 | |
5906 | case E_MIPS_ARCH_2: | |
5907 | return bfd_mach_mips6000; | |
b49e97c9 TS |
5908 | |
5909 | case E_MIPS_ARCH_3: | |
5910 | return bfd_mach_mips4000; | |
b49e97c9 TS |
5911 | |
5912 | case E_MIPS_ARCH_4: | |
5913 | return bfd_mach_mips8000; | |
b49e97c9 TS |
5914 | |
5915 | case E_MIPS_ARCH_5: | |
5916 | return bfd_mach_mips5; | |
b49e97c9 TS |
5917 | |
5918 | case E_MIPS_ARCH_32: | |
5919 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
5920 | |
5921 | case E_MIPS_ARCH_64: | |
5922 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
5923 | |
5924 | case E_MIPS_ARCH_32R2: | |
5925 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
5926 | |
5927 | case E_MIPS_ARCH_64R2: | |
5928 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
5929 | } |
5930 | } | |
5931 | ||
5932 | return 0; | |
5933 | } | |
5934 | ||
5935 | /* Return printable name for ABI. */ | |
5936 | ||
5937 | static INLINE char * | |
9719ad41 | 5938 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
5939 | { |
5940 | flagword flags; | |
5941 | ||
5942 | flags = elf_elfheader (abfd)->e_flags; | |
5943 | switch (flags & EF_MIPS_ABI) | |
5944 | { | |
5945 | case 0: | |
5946 | if (ABI_N32_P (abfd)) | |
5947 | return "N32"; | |
5948 | else if (ABI_64_P (abfd)) | |
5949 | return "64"; | |
5950 | else | |
5951 | return "none"; | |
5952 | case E_MIPS_ABI_O32: | |
5953 | return "O32"; | |
5954 | case E_MIPS_ABI_O64: | |
5955 | return "O64"; | |
5956 | case E_MIPS_ABI_EABI32: | |
5957 | return "EABI32"; | |
5958 | case E_MIPS_ABI_EABI64: | |
5959 | return "EABI64"; | |
5960 | default: | |
5961 | return "unknown abi"; | |
5962 | } | |
5963 | } | |
5964 | \f | |
5965 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
5966 | other is for small objects. All the small objects are kept | |
5967 | together, and then referenced via the gp pointer, which yields | |
5968 | faster assembler code. This is what we use for the small common | |
5969 | section. This approach is copied from ecoff.c. */ | |
5970 | static asection mips_elf_scom_section; | |
5971 | static asymbol mips_elf_scom_symbol; | |
5972 | static asymbol *mips_elf_scom_symbol_ptr; | |
5973 | ||
5974 | /* MIPS ELF also uses an acommon section, which represents an | |
5975 | allocated common symbol which may be overridden by a | |
5976 | definition in a shared library. */ | |
5977 | static asection mips_elf_acom_section; | |
5978 | static asymbol mips_elf_acom_symbol; | |
5979 | static asymbol *mips_elf_acom_symbol_ptr; | |
5980 | ||
738e5348 | 5981 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
5982 | |
5983 | void | |
9719ad41 | 5984 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
5985 | { |
5986 | elf_symbol_type *elfsym; | |
5987 | ||
738e5348 | 5988 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
5989 | elfsym = (elf_symbol_type *) asym; |
5990 | switch (elfsym->internal_elf_sym.st_shndx) | |
5991 | { | |
5992 | case SHN_MIPS_ACOMMON: | |
5993 | /* This section is used in a dynamically linked executable file. | |
5994 | It is an allocated common section. The dynamic linker can | |
5995 | either resolve these symbols to something in a shared | |
5996 | library, or it can just leave them here. For our purposes, | |
5997 | we can consider these symbols to be in a new section. */ | |
5998 | if (mips_elf_acom_section.name == NULL) | |
5999 | { | |
6000 | /* Initialize the acommon section. */ | |
6001 | mips_elf_acom_section.name = ".acommon"; | |
6002 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6003 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6004 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6005 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6006 | mips_elf_acom_symbol.name = ".acommon"; | |
6007 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6008 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6009 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6010 | } | |
6011 | asym->section = &mips_elf_acom_section; | |
6012 | break; | |
6013 | ||
6014 | case SHN_COMMON: | |
6015 | /* Common symbols less than the GP size are automatically | |
6016 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6017 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6018 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6019 | || IRIX_COMPAT (abfd) == ict_irix6) |
6020 | break; | |
6021 | /* Fall through. */ | |
6022 | case SHN_MIPS_SCOMMON: | |
6023 | if (mips_elf_scom_section.name == NULL) | |
6024 | { | |
6025 | /* Initialize the small common section. */ | |
6026 | mips_elf_scom_section.name = ".scommon"; | |
6027 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6028 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6029 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6030 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6031 | mips_elf_scom_symbol.name = ".scommon"; | |
6032 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6033 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6034 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6035 | } | |
6036 | asym->section = &mips_elf_scom_section; | |
6037 | asym->value = elfsym->internal_elf_sym.st_size; | |
6038 | break; | |
6039 | ||
6040 | case SHN_MIPS_SUNDEFINED: | |
6041 | asym->section = bfd_und_section_ptr; | |
6042 | break; | |
6043 | ||
b49e97c9 | 6044 | case SHN_MIPS_TEXT: |
00b4930b TS |
6045 | { |
6046 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6047 | ||
6048 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
6049 | if (section != NULL) | |
6050 | { | |
6051 | asym->section = section; | |
6052 | /* MIPS_TEXT is a bit special, the address is not an offset | |
6053 | to the base of the .text section. So substract the section | |
6054 | base address to make it an offset. */ | |
6055 | asym->value -= section->vma; | |
6056 | } | |
6057 | } | |
b49e97c9 TS |
6058 | break; |
6059 | ||
6060 | case SHN_MIPS_DATA: | |
00b4930b TS |
6061 | { |
6062 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6063 | ||
6064 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
6065 | if (section != NULL) | |
6066 | { | |
6067 | asym->section = section; | |
6068 | /* MIPS_DATA is a bit special, the address is not an offset | |
6069 | to the base of the .data section. So substract the section | |
6070 | base address to make it an offset. */ | |
6071 | asym->value -= section->vma; | |
6072 | } | |
6073 | } | |
b49e97c9 | 6074 | break; |
b49e97c9 | 6075 | } |
738e5348 RS |
6076 | |
6077 | /* If this is an odd-valued function symbol, assume it's a MIPS16 one. */ | |
6078 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC | |
6079 | && (asym->value & 1) != 0) | |
6080 | { | |
6081 | asym->value--; | |
6082 | elfsym->internal_elf_sym.st_other | |
6083 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
6084 | } | |
b49e97c9 TS |
6085 | } |
6086 | \f | |
8c946ed5 RS |
6087 | /* Implement elf_backend_eh_frame_address_size. This differs from |
6088 | the default in the way it handles EABI64. | |
6089 | ||
6090 | EABI64 was originally specified as an LP64 ABI, and that is what | |
6091 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
6092 | historically accepted the combination of -mabi=eabi and -mlong32, | |
6093 | and this ILP32 variation has become semi-official over time. | |
6094 | Both forms use elf32 and have pointer-sized FDE addresses. | |
6095 | ||
6096 | If an EABI object was generated by GCC 4.0 or above, it will have | |
6097 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
6098 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
6099 | have no special marking to distinguish them from LP64 objects. | |
6100 | ||
6101 | We don't want users of the official LP64 ABI to be punished for the | |
6102 | existence of the ILP32 variant, but at the same time, we don't want | |
6103 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
6104 | We therefore take the following approach: | |
6105 | ||
6106 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
6107 | determine the pointer size. | |
6108 | ||
6109 | - Otherwise check the type of the first relocation. Assume that | |
6110 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
6111 | ||
6112 | - Otherwise punt. | |
6113 | ||
6114 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
6115 | compilers because, in the kind of output generated by those compilers, | |
6116 | the first relocation will be associated with either a CIE personality | |
6117 | routine or an FDE start address. Furthermore, the compilers never | |
6118 | used a special (non-pointer) encoding for this ABI. | |
6119 | ||
6120 | Checking the relocation type should also be safe because there is no | |
6121 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
6122 | did so. */ | |
6123 | ||
6124 | unsigned int | |
6125 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
6126 | { | |
6127 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
6128 | return 8; | |
6129 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
6130 | { | |
6131 | bfd_boolean long32_p, long64_p; | |
6132 | ||
6133 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
6134 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
6135 | if (long32_p && long64_p) | |
6136 | return 0; | |
6137 | if (long32_p) | |
6138 | return 4; | |
6139 | if (long64_p) | |
6140 | return 8; | |
6141 | ||
6142 | if (sec->reloc_count > 0 | |
6143 | && elf_section_data (sec)->relocs != NULL | |
6144 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
6145 | == R_MIPS_64)) | |
6146 | return 8; | |
6147 | ||
6148 | return 0; | |
6149 | } | |
6150 | return 4; | |
6151 | } | |
6152 | \f | |
174fd7f9 RS |
6153 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
6154 | relocations against two unnamed section symbols to resolve to the | |
6155 | same address. For example, if we have code like: | |
6156 | ||
6157 | lw $4,%got_disp(.data)($gp) | |
6158 | lw $25,%got_disp(.text)($gp) | |
6159 | jalr $25 | |
6160 | ||
6161 | then the linker will resolve both relocations to .data and the program | |
6162 | will jump there rather than to .text. | |
6163 | ||
6164 | We can work around this problem by giving names to local section symbols. | |
6165 | This is also what the MIPSpro tools do. */ | |
6166 | ||
6167 | bfd_boolean | |
6168 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
6169 | { | |
6170 | return SGI_COMPAT (abfd); | |
6171 | } | |
6172 | \f | |
b49e97c9 TS |
6173 | /* Work over a section just before writing it out. This routine is |
6174 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
6175 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
6176 | a better way. */ | |
6177 | ||
b34976b6 | 6178 | bfd_boolean |
9719ad41 | 6179 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
6180 | { |
6181 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
6182 | && hdr->sh_size > 0) | |
6183 | { | |
6184 | bfd_byte buf[4]; | |
6185 | ||
6186 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
6187 | BFD_ASSERT (hdr->contents == NULL); | |
6188 | ||
6189 | if (bfd_seek (abfd, | |
6190 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
6191 | SEEK_SET) != 0) | |
b34976b6 | 6192 | return FALSE; |
b49e97c9 | 6193 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6194 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6195 | return FALSE; |
b49e97c9 TS |
6196 | } |
6197 | ||
6198 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
6199 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
6200 | && mips_elf_section_data (hdr->bfd_section) != NULL |
6201 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
6202 | { |
6203 | bfd_byte *contents, *l, *lend; | |
6204 | ||
f0abc2a1 AM |
6205 | /* We stored the section contents in the tdata field in the |
6206 | set_section_contents routine. We save the section contents | |
6207 | so that we don't have to read them again. | |
b49e97c9 TS |
6208 | At this point we know that elf_gp is set, so we can look |
6209 | through the section contents to see if there is an | |
6210 | ODK_REGINFO structure. */ | |
6211 | ||
f0abc2a1 | 6212 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
6213 | l = contents; |
6214 | lend = contents + hdr->sh_size; | |
6215 | while (l + sizeof (Elf_External_Options) <= lend) | |
6216 | { | |
6217 | Elf_Internal_Options intopt; | |
6218 | ||
6219 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6220 | &intopt); | |
1bc8074d MR |
6221 | if (intopt.size < sizeof (Elf_External_Options)) |
6222 | { | |
6223 | (*_bfd_error_handler) | |
6224 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6225 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6226 | break; | |
6227 | } | |
b49e97c9 TS |
6228 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6229 | { | |
6230 | bfd_byte buf[8]; | |
6231 | ||
6232 | if (bfd_seek (abfd, | |
6233 | (hdr->sh_offset | |
6234 | + (l - contents) | |
6235 | + sizeof (Elf_External_Options) | |
6236 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
6237 | SEEK_SET) != 0) | |
b34976b6 | 6238 | return FALSE; |
b49e97c9 | 6239 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6240 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 6241 | return FALSE; |
b49e97c9 TS |
6242 | } |
6243 | else if (intopt.kind == ODK_REGINFO) | |
6244 | { | |
6245 | bfd_byte buf[4]; | |
6246 | ||
6247 | if (bfd_seek (abfd, | |
6248 | (hdr->sh_offset | |
6249 | + (l - contents) | |
6250 | + sizeof (Elf_External_Options) | |
6251 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
6252 | SEEK_SET) != 0) | |
b34976b6 | 6253 | return FALSE; |
b49e97c9 | 6254 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6255 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6256 | return FALSE; |
b49e97c9 TS |
6257 | } |
6258 | l += intopt.size; | |
6259 | } | |
6260 | } | |
6261 | ||
6262 | if (hdr->bfd_section != NULL) | |
6263 | { | |
6264 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
6265 | ||
2d0f9ad9 JM |
6266 | /* .sbss is not handled specially here because the GNU/Linux |
6267 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
6268 | changing it back to NOBITS breaks the binary. The entry in | |
6269 | _bfd_mips_elf_special_sections will ensure the correct flags | |
6270 | are set on .sbss if BFD creates it without reading it from an | |
6271 | input file, and without special handling here the flags set | |
6272 | on it in an input file will be followed. */ | |
b49e97c9 TS |
6273 | if (strcmp (name, ".sdata") == 0 |
6274 | || strcmp (name, ".lit8") == 0 | |
6275 | || strcmp (name, ".lit4") == 0) | |
6276 | { | |
6277 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
6278 | hdr->sh_type = SHT_PROGBITS; | |
6279 | } | |
b49e97c9 TS |
6280 | else if (strcmp (name, ".srdata") == 0) |
6281 | { | |
6282 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
6283 | hdr->sh_type = SHT_PROGBITS; | |
6284 | } | |
6285 | else if (strcmp (name, ".compact_rel") == 0) | |
6286 | { | |
6287 | hdr->sh_flags = 0; | |
6288 | hdr->sh_type = SHT_PROGBITS; | |
6289 | } | |
6290 | else if (strcmp (name, ".rtproc") == 0) | |
6291 | { | |
6292 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
6293 | { | |
6294 | unsigned int adjust; | |
6295 | ||
6296 | adjust = hdr->sh_size % hdr->sh_addralign; | |
6297 | if (adjust != 0) | |
6298 | hdr->sh_size += hdr->sh_addralign - adjust; | |
6299 | } | |
6300 | } | |
6301 | } | |
6302 | ||
b34976b6 | 6303 | return TRUE; |
b49e97c9 TS |
6304 | } |
6305 | ||
6306 | /* Handle a MIPS specific section when reading an object file. This | |
6307 | is called when elfcode.h finds a section with an unknown type. | |
6308 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
6309 | ||
6310 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
6311 | how to. */ | |
6312 | ||
b34976b6 | 6313 | bfd_boolean |
6dc132d9 L |
6314 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
6315 | Elf_Internal_Shdr *hdr, | |
6316 | const char *name, | |
6317 | int shindex) | |
b49e97c9 TS |
6318 | { |
6319 | flagword flags = 0; | |
6320 | ||
6321 | /* There ought to be a place to keep ELF backend specific flags, but | |
6322 | at the moment there isn't one. We just keep track of the | |
6323 | sections by their name, instead. Fortunately, the ABI gives | |
6324 | suggested names for all the MIPS specific sections, so we will | |
6325 | probably get away with this. */ | |
6326 | switch (hdr->sh_type) | |
6327 | { | |
6328 | case SHT_MIPS_LIBLIST: | |
6329 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 6330 | return FALSE; |
b49e97c9 TS |
6331 | break; |
6332 | case SHT_MIPS_MSYM: | |
6333 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 6334 | return FALSE; |
b49e97c9 TS |
6335 | break; |
6336 | case SHT_MIPS_CONFLICT: | |
6337 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 6338 | return FALSE; |
b49e97c9 TS |
6339 | break; |
6340 | case SHT_MIPS_GPTAB: | |
0112cd26 | 6341 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 6342 | return FALSE; |
b49e97c9 TS |
6343 | break; |
6344 | case SHT_MIPS_UCODE: | |
6345 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 6346 | return FALSE; |
b49e97c9 TS |
6347 | break; |
6348 | case SHT_MIPS_DEBUG: | |
6349 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 6350 | return FALSE; |
b49e97c9 TS |
6351 | flags = SEC_DEBUGGING; |
6352 | break; | |
6353 | case SHT_MIPS_REGINFO: | |
6354 | if (strcmp (name, ".reginfo") != 0 | |
6355 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 6356 | return FALSE; |
b49e97c9 TS |
6357 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
6358 | break; | |
6359 | case SHT_MIPS_IFACE: | |
6360 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 6361 | return FALSE; |
b49e97c9 TS |
6362 | break; |
6363 | case SHT_MIPS_CONTENT: | |
0112cd26 | 6364 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 6365 | return FALSE; |
b49e97c9 TS |
6366 | break; |
6367 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 6368 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 6369 | return FALSE; |
b49e97c9 TS |
6370 | break; |
6371 | case SHT_MIPS_DWARF: | |
1b315056 | 6372 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 6373 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 6374 | return FALSE; |
b49e97c9 TS |
6375 | break; |
6376 | case SHT_MIPS_SYMBOL_LIB: | |
6377 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 6378 | return FALSE; |
b49e97c9 TS |
6379 | break; |
6380 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
6381 | if (! CONST_STRNEQ (name, ".MIPS.events") |
6382 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 6383 | return FALSE; |
b49e97c9 TS |
6384 | break; |
6385 | default: | |
cc2e31b9 | 6386 | break; |
b49e97c9 TS |
6387 | } |
6388 | ||
6dc132d9 | 6389 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 6390 | return FALSE; |
b49e97c9 TS |
6391 | |
6392 | if (flags) | |
6393 | { | |
6394 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
6395 | (bfd_get_section_flags (abfd, | |
6396 | hdr->bfd_section) | |
6397 | | flags))) | |
b34976b6 | 6398 | return FALSE; |
b49e97c9 TS |
6399 | } |
6400 | ||
6401 | /* FIXME: We should record sh_info for a .gptab section. */ | |
6402 | ||
6403 | /* For a .reginfo section, set the gp value in the tdata information | |
6404 | from the contents of this section. We need the gp value while | |
6405 | processing relocs, so we just get it now. The .reginfo section | |
6406 | is not used in the 64-bit MIPS ELF ABI. */ | |
6407 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
6408 | { | |
6409 | Elf32_External_RegInfo ext; | |
6410 | Elf32_RegInfo s; | |
6411 | ||
9719ad41 RS |
6412 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
6413 | &ext, 0, sizeof ext)) | |
b34976b6 | 6414 | return FALSE; |
b49e97c9 TS |
6415 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
6416 | elf_gp (abfd) = s.ri_gp_value; | |
6417 | } | |
6418 | ||
6419 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
6420 | set the gp value based on what we find. We may see both | |
6421 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
6422 | they should agree. */ | |
6423 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
6424 | { | |
6425 | bfd_byte *contents, *l, *lend; | |
6426 | ||
9719ad41 | 6427 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 6428 | if (contents == NULL) |
b34976b6 | 6429 | return FALSE; |
b49e97c9 | 6430 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 6431 | 0, hdr->sh_size)) |
b49e97c9 TS |
6432 | { |
6433 | free (contents); | |
b34976b6 | 6434 | return FALSE; |
b49e97c9 TS |
6435 | } |
6436 | l = contents; | |
6437 | lend = contents + hdr->sh_size; | |
6438 | while (l + sizeof (Elf_External_Options) <= lend) | |
6439 | { | |
6440 | Elf_Internal_Options intopt; | |
6441 | ||
6442 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6443 | &intopt); | |
1bc8074d MR |
6444 | if (intopt.size < sizeof (Elf_External_Options)) |
6445 | { | |
6446 | (*_bfd_error_handler) | |
6447 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6448 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6449 | break; | |
6450 | } | |
b49e97c9 TS |
6451 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6452 | { | |
6453 | Elf64_Internal_RegInfo intreg; | |
6454 | ||
6455 | bfd_mips_elf64_swap_reginfo_in | |
6456 | (abfd, | |
6457 | ((Elf64_External_RegInfo *) | |
6458 | (l + sizeof (Elf_External_Options))), | |
6459 | &intreg); | |
6460 | elf_gp (abfd) = intreg.ri_gp_value; | |
6461 | } | |
6462 | else if (intopt.kind == ODK_REGINFO) | |
6463 | { | |
6464 | Elf32_RegInfo intreg; | |
6465 | ||
6466 | bfd_mips_elf32_swap_reginfo_in | |
6467 | (abfd, | |
6468 | ((Elf32_External_RegInfo *) | |
6469 | (l + sizeof (Elf_External_Options))), | |
6470 | &intreg); | |
6471 | elf_gp (abfd) = intreg.ri_gp_value; | |
6472 | } | |
6473 | l += intopt.size; | |
6474 | } | |
6475 | free (contents); | |
6476 | } | |
6477 | ||
b34976b6 | 6478 | return TRUE; |
b49e97c9 TS |
6479 | } |
6480 | ||
6481 | /* Set the correct type for a MIPS ELF section. We do this by the | |
6482 | section name, which is a hack, but ought to work. This routine is | |
6483 | used by both the 32-bit and the 64-bit ABI. */ | |
6484 | ||
b34976b6 | 6485 | bfd_boolean |
9719ad41 | 6486 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 6487 | { |
0414f35b | 6488 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
6489 | |
6490 | if (strcmp (name, ".liblist") == 0) | |
6491 | { | |
6492 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 6493 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
6494 | /* The sh_link field is set in final_write_processing. */ |
6495 | } | |
6496 | else if (strcmp (name, ".conflict") == 0) | |
6497 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 6498 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
6499 | { |
6500 | hdr->sh_type = SHT_MIPS_GPTAB; | |
6501 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
6502 | /* The sh_info field is set in final_write_processing. */ | |
6503 | } | |
6504 | else if (strcmp (name, ".ucode") == 0) | |
6505 | hdr->sh_type = SHT_MIPS_UCODE; | |
6506 | else if (strcmp (name, ".mdebug") == 0) | |
6507 | { | |
6508 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 6509 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
6510 | entsize of 0. FIXME: Does this matter? */ |
6511 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
6512 | hdr->sh_entsize = 0; | |
6513 | else | |
6514 | hdr->sh_entsize = 1; | |
6515 | } | |
6516 | else if (strcmp (name, ".reginfo") == 0) | |
6517 | { | |
6518 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 6519 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
6520 | entsize of 0x18. FIXME: Does this matter? */ |
6521 | if (SGI_COMPAT (abfd)) | |
6522 | { | |
6523 | if ((abfd->flags & DYNAMIC) != 0) | |
6524 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6525 | else | |
6526 | hdr->sh_entsize = 1; | |
6527 | } | |
6528 | else | |
6529 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6530 | } | |
6531 | else if (SGI_COMPAT (abfd) | |
6532 | && (strcmp (name, ".hash") == 0 | |
6533 | || strcmp (name, ".dynamic") == 0 | |
6534 | || strcmp (name, ".dynstr") == 0)) | |
6535 | { | |
6536 | if (SGI_COMPAT (abfd)) | |
6537 | hdr->sh_entsize = 0; | |
6538 | #if 0 | |
8dc1a139 | 6539 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6540 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6541 | #endif | |
6542 | } | |
6543 | else if (strcmp (name, ".got") == 0 | |
6544 | || strcmp (name, ".srdata") == 0 | |
6545 | || strcmp (name, ".sdata") == 0 | |
6546 | || strcmp (name, ".sbss") == 0 | |
6547 | || strcmp (name, ".lit4") == 0 | |
6548 | || strcmp (name, ".lit8") == 0) | |
6549 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6550 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6551 | { | |
6552 | hdr->sh_type = SHT_MIPS_IFACE; | |
6553 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6554 | } | |
0112cd26 | 6555 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6556 | { |
6557 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6558 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6559 | /* The sh_info field is set in final_write_processing. */ | |
6560 | } | |
cc2e31b9 | 6561 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6562 | { |
6563 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6564 | hdr->sh_entsize = 1; | |
6565 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6566 | } | |
1b315056 CS |
6567 | else if (CONST_STRNEQ (name, ".debug_") |
6568 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6569 | { |
6570 | hdr->sh_type = SHT_MIPS_DWARF; | |
6571 | ||
6572 | /* Irix facilities such as libexc expect a single .debug_frame | |
6573 | per executable, the system ones have NOSTRIP set and the linker | |
6574 | doesn't merge sections with different flags so ... */ | |
6575 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
6576 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6577 | } | |
b49e97c9 TS |
6578 | else if (strcmp (name, ".MIPS.symlib") == 0) |
6579 | { | |
6580 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
6581 | /* The sh_link and sh_info fields are set in | |
6582 | final_write_processing. */ | |
6583 | } | |
0112cd26 NC |
6584 | else if (CONST_STRNEQ (name, ".MIPS.events") |
6585 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
6586 | { |
6587 | hdr->sh_type = SHT_MIPS_EVENTS; | |
6588 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6589 | /* The sh_link field is set in final_write_processing. */ | |
6590 | } | |
6591 | else if (strcmp (name, ".msym") == 0) | |
6592 | { | |
6593 | hdr->sh_type = SHT_MIPS_MSYM; | |
6594 | hdr->sh_flags |= SHF_ALLOC; | |
6595 | hdr->sh_entsize = 8; | |
6596 | } | |
6597 | ||
7a79a000 TS |
6598 | /* The generic elf_fake_sections will set up REL_HDR using the default |
6599 | kind of relocations. We used to set up a second header for the | |
6600 | non-default kind of relocations here, but only NewABI would use | |
6601 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
6602 | Thus we create those header only on demand now. */ | |
b49e97c9 | 6603 | |
b34976b6 | 6604 | return TRUE; |
b49e97c9 TS |
6605 | } |
6606 | ||
6607 | /* Given a BFD section, try to locate the corresponding ELF section | |
6608 | index. This is used by both the 32-bit and the 64-bit ABI. | |
6609 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
6610 | but for non-PIC objects we will certainly want support for at least | |
6611 | the .scommon section. */ | |
6612 | ||
b34976b6 | 6613 | bfd_boolean |
9719ad41 RS |
6614 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
6615 | asection *sec, int *retval) | |
b49e97c9 TS |
6616 | { |
6617 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
6618 | { | |
6619 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 6620 | return TRUE; |
b49e97c9 TS |
6621 | } |
6622 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
6623 | { | |
6624 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 6625 | return TRUE; |
b49e97c9 | 6626 | } |
b34976b6 | 6627 | return FALSE; |
b49e97c9 TS |
6628 | } |
6629 | \f | |
6630 | /* Hook called by the linker routine which adds symbols from an object | |
6631 | file. We must handle the special MIPS section numbers here. */ | |
6632 | ||
b34976b6 | 6633 | bfd_boolean |
9719ad41 | 6634 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 6635 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
6636 | flagword *flagsp ATTRIBUTE_UNUSED, |
6637 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
6638 | { |
6639 | if (SGI_COMPAT (abfd) | |
6640 | && (abfd->flags & DYNAMIC) != 0 | |
6641 | && strcmp (*namep, "_rld_new_interface") == 0) | |
6642 | { | |
8dc1a139 | 6643 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 6644 | *namep = NULL; |
b34976b6 | 6645 | return TRUE; |
b49e97c9 TS |
6646 | } |
6647 | ||
eedecc07 DD |
6648 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
6649 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
6650 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
6651 | a magic symbol resolved by the linker, we ignore this bogus definition | |
6652 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
6653 | is not done for them. */ | |
6654 | if (!NEWABI_P(abfd) | |
6655 | && (sym->st_shndx == SHN_ABS) | |
6656 | && (strcmp (*namep, "_gp_disp") == 0)) | |
6657 | { | |
6658 | *namep = NULL; | |
6659 | return TRUE; | |
6660 | } | |
6661 | ||
b49e97c9 TS |
6662 | switch (sym->st_shndx) |
6663 | { | |
6664 | case SHN_COMMON: | |
6665 | /* Common symbols less than the GP size are automatically | |
6666 | treated as SHN_MIPS_SCOMMON symbols. */ | |
6667 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 6668 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
6669 | || IRIX_COMPAT (abfd) == ict_irix6) |
6670 | break; | |
6671 | /* Fall through. */ | |
6672 | case SHN_MIPS_SCOMMON: | |
6673 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
6674 | (*secp)->flags |= SEC_IS_COMMON; | |
6675 | *valp = sym->st_size; | |
6676 | break; | |
6677 | ||
6678 | case SHN_MIPS_TEXT: | |
6679 | /* This section is used in a shared object. */ | |
6680 | if (elf_tdata (abfd)->elf_text_section == NULL) | |
6681 | { | |
6682 | asymbol *elf_text_symbol; | |
6683 | asection *elf_text_section; | |
6684 | bfd_size_type amt = sizeof (asection); | |
6685 | ||
6686 | elf_text_section = bfd_zalloc (abfd, amt); | |
6687 | if (elf_text_section == NULL) | |
b34976b6 | 6688 | return FALSE; |
b49e97c9 TS |
6689 | |
6690 | amt = sizeof (asymbol); | |
6691 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
6692 | if (elf_text_symbol == NULL) | |
b34976b6 | 6693 | return FALSE; |
b49e97c9 TS |
6694 | |
6695 | /* Initialize the section. */ | |
6696 | ||
6697 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
6698 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
6699 | ||
6700 | elf_text_section->symbol = elf_text_symbol; | |
6701 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
6702 | ||
6703 | elf_text_section->name = ".text"; | |
6704 | elf_text_section->flags = SEC_NO_FLAGS; | |
6705 | elf_text_section->output_section = NULL; | |
6706 | elf_text_section->owner = abfd; | |
6707 | elf_text_symbol->name = ".text"; | |
6708 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6709 | elf_text_symbol->section = elf_text_section; | |
6710 | } | |
6711 | /* This code used to do *secp = bfd_und_section_ptr if | |
6712 | info->shared. I don't know why, and that doesn't make sense, | |
6713 | so I took it out. */ | |
6714 | *secp = elf_tdata (abfd)->elf_text_section; | |
6715 | break; | |
6716 | ||
6717 | case SHN_MIPS_ACOMMON: | |
6718 | /* Fall through. XXX Can we treat this as allocated data? */ | |
6719 | case SHN_MIPS_DATA: | |
6720 | /* This section is used in a shared object. */ | |
6721 | if (elf_tdata (abfd)->elf_data_section == NULL) | |
6722 | { | |
6723 | asymbol *elf_data_symbol; | |
6724 | asection *elf_data_section; | |
6725 | bfd_size_type amt = sizeof (asection); | |
6726 | ||
6727 | elf_data_section = bfd_zalloc (abfd, amt); | |
6728 | if (elf_data_section == NULL) | |
b34976b6 | 6729 | return FALSE; |
b49e97c9 TS |
6730 | |
6731 | amt = sizeof (asymbol); | |
6732 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
6733 | if (elf_data_symbol == NULL) | |
b34976b6 | 6734 | return FALSE; |
b49e97c9 TS |
6735 | |
6736 | /* Initialize the section. */ | |
6737 | ||
6738 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
6739 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
6740 | ||
6741 | elf_data_section->symbol = elf_data_symbol; | |
6742 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
6743 | ||
6744 | elf_data_section->name = ".data"; | |
6745 | elf_data_section->flags = SEC_NO_FLAGS; | |
6746 | elf_data_section->output_section = NULL; | |
6747 | elf_data_section->owner = abfd; | |
6748 | elf_data_symbol->name = ".data"; | |
6749 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6750 | elf_data_symbol->section = elf_data_section; | |
6751 | } | |
6752 | /* This code used to do *secp = bfd_und_section_ptr if | |
6753 | info->shared. I don't know why, and that doesn't make sense, | |
6754 | so I took it out. */ | |
6755 | *secp = elf_tdata (abfd)->elf_data_section; | |
6756 | break; | |
6757 | ||
6758 | case SHN_MIPS_SUNDEFINED: | |
6759 | *secp = bfd_und_section_ptr; | |
6760 | break; | |
6761 | } | |
6762 | ||
6763 | if (SGI_COMPAT (abfd) | |
6764 | && ! info->shared | |
f13a99db | 6765 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
6766 | && strcmp (*namep, "__rld_obj_head") == 0) |
6767 | { | |
6768 | struct elf_link_hash_entry *h; | |
14a793b2 | 6769 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6770 | |
6771 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 6772 | bh = NULL; |
b49e97c9 | 6773 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 6774 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 6775 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 6776 | return FALSE; |
14a793b2 AM |
6777 | |
6778 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6779 | h->non_elf = 0; |
6780 | h->def_regular = 1; | |
b49e97c9 TS |
6781 | h->type = STT_OBJECT; |
6782 | ||
c152c796 | 6783 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6784 | return FALSE; |
b49e97c9 | 6785 | |
b34976b6 | 6786 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b49e97c9 TS |
6787 | } |
6788 | ||
6789 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
6790 | odd. This will cause something like .word SYM to come up with | |
6791 | the right value when it is loaded into the PC. */ | |
30c09090 | 6792 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
6793 | ++*valp; |
6794 | ||
b34976b6 | 6795 | return TRUE; |
b49e97c9 TS |
6796 | } |
6797 | ||
6798 | /* This hook function is called before the linker writes out a global | |
6799 | symbol. We mark symbols as small common if appropriate. This is | |
6800 | also where we undo the increment of the value for a mips16 symbol. */ | |
6801 | ||
6e0b88f1 | 6802 | int |
9719ad41 RS |
6803 | _bfd_mips_elf_link_output_symbol_hook |
6804 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
6805 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
6806 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
6807 | { |
6808 | /* If we see a common symbol, which implies a relocatable link, then | |
6809 | if a symbol was small common in an input file, mark it as small | |
6810 | common in the output file. */ | |
6811 | if (sym->st_shndx == SHN_COMMON | |
6812 | && strcmp (input_sec->name, ".scommon") == 0) | |
6813 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
6814 | ||
30c09090 | 6815 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
79cda7cf | 6816 | sym->st_value &= ~1; |
b49e97c9 | 6817 | |
6e0b88f1 | 6818 | return 1; |
b49e97c9 TS |
6819 | } |
6820 | \f | |
6821 | /* Functions for the dynamic linker. */ | |
6822 | ||
6823 | /* Create dynamic sections when linking against a dynamic object. */ | |
6824 | ||
b34976b6 | 6825 | bfd_boolean |
9719ad41 | 6826 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
6827 | { |
6828 | struct elf_link_hash_entry *h; | |
14a793b2 | 6829 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6830 | flagword flags; |
6831 | register asection *s; | |
6832 | const char * const *namep; | |
0a44bf69 | 6833 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6834 | |
0a44bf69 | 6835 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
6836 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
6837 | | SEC_LINKER_CREATED | SEC_READONLY); | |
6838 | ||
0a44bf69 RS |
6839 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
6840 | EABI doesn't. */ | |
6841 | if (!htab->is_vxworks) | |
b49e97c9 | 6842 | { |
0a44bf69 RS |
6843 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
6844 | if (s != NULL) | |
6845 | { | |
6846 | if (! bfd_set_section_flags (abfd, s, flags)) | |
6847 | return FALSE; | |
6848 | } | |
b49e97c9 TS |
6849 | } |
6850 | ||
6851 | /* We need to create .got section. */ | |
23cc69b6 | 6852 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
6853 | return FALSE; |
6854 | ||
0a44bf69 | 6855 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 6856 | return FALSE; |
b49e97c9 | 6857 | |
b49e97c9 | 6858 | /* Create .stub section. */ |
4e41d0d7 RS |
6859 | s = bfd_make_section_with_flags (abfd, |
6860 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
6861 | flags | SEC_CODE); | |
6862 | if (s == NULL | |
6863 | || ! bfd_set_section_alignment (abfd, s, | |
6864 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
6865 | return FALSE; | |
6866 | htab->sstubs = s; | |
b49e97c9 TS |
6867 | |
6868 | if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none) | |
6869 | && !info->shared | |
6870 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
6871 | { | |
3496cb2a L |
6872 | s = bfd_make_section_with_flags (abfd, ".rld_map", |
6873 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 6874 | if (s == NULL |
b49e97c9 TS |
6875 | || ! bfd_set_section_alignment (abfd, s, |
6876 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 6877 | return FALSE; |
b49e97c9 TS |
6878 | } |
6879 | ||
6880 | /* On IRIX5, we adjust add some additional symbols and change the | |
6881 | alignments of several sections. There is no ABI documentation | |
6882 | indicating that this is necessary on IRIX6, nor any evidence that | |
6883 | the linker takes such action. */ | |
6884 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
6885 | { | |
6886 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
6887 | { | |
14a793b2 | 6888 | bh = NULL; |
b49e97c9 | 6889 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
6890 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
6891 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 6892 | return FALSE; |
14a793b2 AM |
6893 | |
6894 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6895 | h->non_elf = 0; |
6896 | h->def_regular = 1; | |
b49e97c9 TS |
6897 | h->type = STT_SECTION; |
6898 | ||
c152c796 | 6899 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6900 | return FALSE; |
b49e97c9 TS |
6901 | } |
6902 | ||
6903 | /* We need to create a .compact_rel section. */ | |
6904 | if (SGI_COMPAT (abfd)) | |
6905 | { | |
6906 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 6907 | return FALSE; |
b49e97c9 TS |
6908 | } |
6909 | ||
44c410de | 6910 | /* Change alignments of some sections. */ |
b49e97c9 TS |
6911 | s = bfd_get_section_by_name (abfd, ".hash"); |
6912 | if (s != NULL) | |
d80dcc6a | 6913 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6914 | s = bfd_get_section_by_name (abfd, ".dynsym"); |
6915 | if (s != NULL) | |
d80dcc6a | 6916 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6917 | s = bfd_get_section_by_name (abfd, ".dynstr"); |
6918 | if (s != NULL) | |
d80dcc6a | 6919 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6920 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
6921 | if (s != NULL) | |
d80dcc6a | 6922 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6923 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
6924 | if (s != NULL) | |
d80dcc6a | 6925 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6926 | } |
6927 | ||
6928 | if (!info->shared) | |
6929 | { | |
14a793b2 AM |
6930 | const char *name; |
6931 | ||
6932 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
6933 | bh = NULL; | |
6934 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
6935 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
6936 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 6937 | return FALSE; |
14a793b2 AM |
6938 | |
6939 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6940 | h->non_elf = 0; |
6941 | h->def_regular = 1; | |
b49e97c9 TS |
6942 | h->type = STT_SECTION; |
6943 | ||
c152c796 | 6944 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6945 | return FALSE; |
b49e97c9 TS |
6946 | |
6947 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
6948 | { | |
6949 | /* __rld_map is a four byte word located in the .data section | |
6950 | and is filled in by the rtld to contain a pointer to | |
6951 | the _r_debug structure. Its symbol value will be set in | |
6952 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
6953 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
6954 | BFD_ASSERT (s != NULL); | |
6955 | ||
14a793b2 AM |
6956 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
6957 | bh = NULL; | |
6958 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 | 6959 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, |
14a793b2 | 6960 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 6961 | return FALSE; |
14a793b2 AM |
6962 | |
6963 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6964 | h->non_elf = 0; |
6965 | h->def_regular = 1; | |
b49e97c9 TS |
6966 | h->type = STT_OBJECT; |
6967 | ||
c152c796 | 6968 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6969 | return FALSE; |
b49e97c9 TS |
6970 | } |
6971 | } | |
6972 | ||
861fb55a DJ |
6973 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
6974 | Also create the _PROCEDURE_LINKAGE_TABLE symbol. */ | |
6975 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) | |
6976 | return FALSE; | |
6977 | ||
6978 | /* Cache the sections created above. */ | |
6979 | htab->splt = bfd_get_section_by_name (abfd, ".plt"); | |
6980 | htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); | |
0a44bf69 RS |
6981 | if (htab->is_vxworks) |
6982 | { | |
0a44bf69 RS |
6983 | htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); |
6984 | htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
861fb55a DJ |
6985 | } |
6986 | else | |
6987 | htab->srelplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
6988 | if (!htab->sdynbss | |
6989 | || (htab->is_vxworks && !htab->srelbss && !info->shared) | |
6990 | || !htab->srelplt | |
6991 | || !htab->splt) | |
6992 | abort (); | |
0a44bf69 | 6993 | |
861fb55a DJ |
6994 | if (htab->is_vxworks) |
6995 | { | |
0a44bf69 RS |
6996 | /* Do the usual VxWorks handling. */ |
6997 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
6998 | return FALSE; | |
6999 | ||
7000 | /* Work out the PLT sizes. */ | |
7001 | if (info->shared) | |
7002 | { | |
7003 | htab->plt_header_size | |
7004 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
7005 | htab->plt_entry_size | |
7006 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
7007 | } | |
7008 | else | |
7009 | { | |
7010 | htab->plt_header_size | |
7011 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
7012 | htab->plt_entry_size | |
7013 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
7014 | } | |
7015 | } | |
861fb55a DJ |
7016 | else if (!info->shared) |
7017 | { | |
7018 | /* All variants of the plt0 entry are the same size. */ | |
7019 | htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
7020 | htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
7021 | } | |
0a44bf69 | 7022 | |
b34976b6 | 7023 | return TRUE; |
b49e97c9 TS |
7024 | } |
7025 | \f | |
c224138d RS |
7026 | /* Return true if relocation REL against section SEC is a REL rather than |
7027 | RELA relocation. RELOCS is the first relocation in the section and | |
7028 | ABFD is the bfd that contains SEC. */ | |
7029 | ||
7030 | static bfd_boolean | |
7031 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7032 | const Elf_Internal_Rela *relocs, | |
7033 | const Elf_Internal_Rela *rel) | |
7034 | { | |
7035 | Elf_Internal_Shdr *rel_hdr; | |
7036 | const struct elf_backend_data *bed; | |
7037 | ||
7038 | /* To determine which flavor or relocation this is, we depend on the | |
7039 | fact that the INPUT_SECTION's REL_HDR is read before its REL_HDR2. */ | |
7040 | rel_hdr = &elf_section_data (sec)->rel_hdr; | |
7041 | bed = get_elf_backend_data (abfd); | |
7042 | if ((size_t) (rel - relocs) | |
7043 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) | |
7044 | rel_hdr = elf_section_data (sec)->rel_hdr2; | |
7045 | return rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (abfd); | |
7046 | } | |
7047 | ||
7048 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7049 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7050 | of the section that REL is against. */ | |
7051 | ||
7052 | static bfd_vma | |
7053 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7054 | reloc_howto_type *howto, bfd_byte *contents) | |
7055 | { | |
7056 | bfd_byte *location; | |
7057 | unsigned int r_type; | |
7058 | bfd_vma addend; | |
7059 | ||
7060 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7061 | location = contents + rel->r_offset; | |
7062 | ||
7063 | /* Get the addend, which is stored in the input file. */ | |
7064 | _bfd_mips16_elf_reloc_unshuffle (abfd, r_type, FALSE, location); | |
7065 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); | |
7066 | _bfd_mips16_elf_reloc_shuffle (abfd, r_type, FALSE, location); | |
7067 | ||
7068 | return addend & howto->src_mask; | |
7069 | } | |
7070 | ||
7071 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7072 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7073 | and update *ADDEND with the final addend. Return true on success | |
7074 | or false if the LO16 could not be found. RELEND is the exclusive | |
7075 | upper bound on the relocations for REL's section. */ | |
7076 | ||
7077 | static bfd_boolean | |
7078 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
7079 | const Elf_Internal_Rela *rel, | |
7080 | const Elf_Internal_Rela *relend, | |
7081 | bfd_byte *contents, bfd_vma *addend) | |
7082 | { | |
7083 | unsigned int r_type, lo16_type; | |
7084 | const Elf_Internal_Rela *lo16_relocation; | |
7085 | reloc_howto_type *lo16_howto; | |
7086 | bfd_vma l; | |
7087 | ||
7088 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 7089 | if (mips16_reloc_p (r_type)) |
c224138d RS |
7090 | lo16_type = R_MIPS16_LO16; |
7091 | else | |
7092 | lo16_type = R_MIPS_LO16; | |
7093 | ||
7094 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
7095 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
7096 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
7097 | LO16 value.) | |
7098 | ||
7099 | Scan ahead to find a matching LO16 relocation. | |
7100 | ||
7101 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
7102 | be immediately following. However, for the IRIX6 ABI, the next | |
7103 | relocation may be a composed relocation consisting of several | |
7104 | relocations for the same address. In that case, the R_MIPS_LO16 | |
7105 | relocation may occur as one of these. We permit a similar | |
7106 | extension in general, as that is useful for GCC. | |
7107 | ||
7108 | In some cases GCC dead code elimination removes the LO16 but keeps | |
7109 | the corresponding HI16. This is strictly speaking a violation of | |
7110 | the ABI but not immediately harmful. */ | |
7111 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
7112 | if (lo16_relocation == NULL) | |
7113 | return FALSE; | |
7114 | ||
7115 | /* Obtain the addend kept there. */ | |
7116 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
7117 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
7118 | ||
7119 | l <<= lo16_howto->rightshift; | |
7120 | l = _bfd_mips_elf_sign_extend (l, 16); | |
7121 | ||
7122 | *addend <<= 16; | |
7123 | *addend += l; | |
7124 | return TRUE; | |
7125 | } | |
7126 | ||
7127 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
7128 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
7129 | already holds the contents if it is nonull on entry. */ | |
7130 | ||
7131 | static bfd_boolean | |
7132 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
7133 | { | |
7134 | if (*contents) | |
7135 | return TRUE; | |
7136 | ||
7137 | /* Get cached copy if it exists. */ | |
7138 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7139 | { | |
7140 | *contents = elf_section_data (sec)->this_hdr.contents; | |
7141 | return TRUE; | |
7142 | } | |
7143 | ||
7144 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
7145 | } | |
7146 | ||
b49e97c9 TS |
7147 | /* Look through the relocs for a section during the first phase, and |
7148 | allocate space in the global offset table. */ | |
7149 | ||
b34976b6 | 7150 | bfd_boolean |
9719ad41 RS |
7151 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7152 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
7153 | { |
7154 | const char *name; | |
7155 | bfd *dynobj; | |
7156 | Elf_Internal_Shdr *symtab_hdr; | |
7157 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
7158 | size_t extsymoff; |
7159 | const Elf_Internal_Rela *rel; | |
7160 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 7161 | asection *sreloc; |
9c5bfbb7 | 7162 | const struct elf_backend_data *bed; |
0a44bf69 | 7163 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
7164 | bfd_byte *contents; |
7165 | bfd_vma addend; | |
7166 | reloc_howto_type *howto; | |
b49e97c9 | 7167 | |
1049f94e | 7168 | if (info->relocatable) |
b34976b6 | 7169 | return TRUE; |
b49e97c9 | 7170 | |
0a44bf69 | 7171 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
7172 | dynobj = elf_hash_table (info)->dynobj; |
7173 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7174 | sym_hashes = elf_sym_hashes (abfd); | |
7175 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7176 | ||
738e5348 RS |
7177 | bed = get_elf_backend_data (abfd); |
7178 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
7179 | ||
b49e97c9 TS |
7180 | /* Check for the mips16 stub sections. */ |
7181 | ||
7182 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 7183 | if (FN_STUB_P (name)) |
b49e97c9 TS |
7184 | { |
7185 | unsigned long r_symndx; | |
7186 | ||
7187 | /* Look at the relocation information to figure out which symbol | |
7188 | this is for. */ | |
7189 | ||
738e5348 RS |
7190 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
7191 | if (r_symndx == 0) | |
7192 | { | |
7193 | (*_bfd_error_handler) | |
7194 | (_("%B: Warning: cannot determine the target function for" | |
7195 | " stub section `%s'"), | |
7196 | abfd, name); | |
7197 | bfd_set_error (bfd_error_bad_value); | |
7198 | return FALSE; | |
7199 | } | |
b49e97c9 TS |
7200 | |
7201 | if (r_symndx < extsymoff | |
7202 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7203 | { | |
7204 | asection *o; | |
7205 | ||
7206 | /* This stub is for a local symbol. This stub will only be | |
7207 | needed if there is some relocation in this BFD, other | |
7208 | than a 16 bit function call, which refers to this symbol. */ | |
7209 | for (o = abfd->sections; o != NULL; o = o->next) | |
7210 | { | |
7211 | Elf_Internal_Rela *sec_relocs; | |
7212 | const Elf_Internal_Rela *r, *rend; | |
7213 | ||
7214 | /* We can ignore stub sections when looking for relocs. */ | |
7215 | if ((o->flags & SEC_RELOC) == 0 | |
7216 | || o->reloc_count == 0 | |
738e5348 | 7217 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
7218 | continue; |
7219 | ||
45d6a902 | 7220 | sec_relocs |
9719ad41 | 7221 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 7222 | info->keep_memory); |
b49e97c9 | 7223 | if (sec_relocs == NULL) |
b34976b6 | 7224 | return FALSE; |
b49e97c9 TS |
7225 | |
7226 | rend = sec_relocs + o->reloc_count; | |
7227 | for (r = sec_relocs; r < rend; r++) | |
7228 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 7229 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
7230 | break; |
7231 | ||
6cdc0ccc | 7232 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
7233 | free (sec_relocs); |
7234 | ||
7235 | if (r < rend) | |
7236 | break; | |
7237 | } | |
7238 | ||
7239 | if (o == NULL) | |
7240 | { | |
7241 | /* There is no non-call reloc for this stub, so we do | |
7242 | not need it. Since this function is called before | |
7243 | the linker maps input sections to output sections, we | |
7244 | can easily discard it by setting the SEC_EXCLUDE | |
7245 | flag. */ | |
7246 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 7247 | return TRUE; |
b49e97c9 TS |
7248 | } |
7249 | ||
7250 | /* Record this stub in an array of local symbol stubs for | |
7251 | this BFD. */ | |
7252 | if (elf_tdata (abfd)->local_stubs == NULL) | |
7253 | { | |
7254 | unsigned long symcount; | |
7255 | asection **n; | |
7256 | bfd_size_type amt; | |
7257 | ||
7258 | if (elf_bad_symtab (abfd)) | |
7259 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7260 | else | |
7261 | symcount = symtab_hdr->sh_info; | |
7262 | amt = symcount * sizeof (asection *); | |
9719ad41 | 7263 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 7264 | if (n == NULL) |
b34976b6 | 7265 | return FALSE; |
b49e97c9 TS |
7266 | elf_tdata (abfd)->local_stubs = n; |
7267 | } | |
7268 | ||
b9d58d71 | 7269 | sec->flags |= SEC_KEEP; |
b49e97c9 TS |
7270 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
7271 | ||
7272 | /* We don't need to set mips16_stubs_seen in this case. | |
7273 | That flag is used to see whether we need to look through | |
7274 | the global symbol table for stubs. We don't need to set | |
7275 | it here, because we just have a local stub. */ | |
7276 | } | |
7277 | else | |
7278 | { | |
7279 | struct mips_elf_link_hash_entry *h; | |
7280 | ||
7281 | h = ((struct mips_elf_link_hash_entry *) | |
7282 | sym_hashes[r_symndx - extsymoff]); | |
7283 | ||
973a3492 L |
7284 | while (h->root.root.type == bfd_link_hash_indirect |
7285 | || h->root.root.type == bfd_link_hash_warning) | |
7286 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
7287 | ||
b49e97c9 TS |
7288 | /* H is the symbol this stub is for. */ |
7289 | ||
b9d58d71 TS |
7290 | /* If we already have an appropriate stub for this function, we |
7291 | don't need another one, so we can discard this one. Since | |
7292 | this function is called before the linker maps input sections | |
7293 | to output sections, we can easily discard it by setting the | |
7294 | SEC_EXCLUDE flag. */ | |
7295 | if (h->fn_stub != NULL) | |
7296 | { | |
7297 | sec->flags |= SEC_EXCLUDE; | |
7298 | return TRUE; | |
7299 | } | |
7300 | ||
7301 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 7302 | h->fn_stub = sec; |
b34976b6 | 7303 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
7304 | } |
7305 | } | |
b9d58d71 | 7306 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
7307 | { |
7308 | unsigned long r_symndx; | |
7309 | struct mips_elf_link_hash_entry *h; | |
7310 | asection **loc; | |
7311 | ||
7312 | /* Look at the relocation information to figure out which symbol | |
7313 | this is for. */ | |
7314 | ||
738e5348 RS |
7315 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
7316 | if (r_symndx == 0) | |
7317 | { | |
7318 | (*_bfd_error_handler) | |
7319 | (_("%B: Warning: cannot determine the target function for" | |
7320 | " stub section `%s'"), | |
7321 | abfd, name); | |
7322 | bfd_set_error (bfd_error_bad_value); | |
7323 | return FALSE; | |
7324 | } | |
b49e97c9 TS |
7325 | |
7326 | if (r_symndx < extsymoff | |
7327 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7328 | { | |
b9d58d71 | 7329 | asection *o; |
b49e97c9 | 7330 | |
b9d58d71 TS |
7331 | /* This stub is for a local symbol. This stub will only be |
7332 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
7333 | that refers to this symbol. */ | |
7334 | for (o = abfd->sections; o != NULL; o = o->next) | |
7335 | { | |
7336 | Elf_Internal_Rela *sec_relocs; | |
7337 | const Elf_Internal_Rela *r, *rend; | |
7338 | ||
7339 | /* We can ignore stub sections when looking for relocs. */ | |
7340 | if ((o->flags & SEC_RELOC) == 0 | |
7341 | || o->reloc_count == 0 | |
738e5348 | 7342 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
7343 | continue; |
7344 | ||
7345 | sec_relocs | |
7346 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
7347 | info->keep_memory); | |
7348 | if (sec_relocs == NULL) | |
7349 | return FALSE; | |
7350 | ||
7351 | rend = sec_relocs + o->reloc_count; | |
7352 | for (r = sec_relocs; r < rend; r++) | |
7353 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
7354 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
7355 | break; | |
7356 | ||
7357 | if (elf_section_data (o)->relocs != sec_relocs) | |
7358 | free (sec_relocs); | |
7359 | ||
7360 | if (r < rend) | |
7361 | break; | |
7362 | } | |
7363 | ||
7364 | if (o == NULL) | |
7365 | { | |
7366 | /* There is no non-call reloc for this stub, so we do | |
7367 | not need it. Since this function is called before | |
7368 | the linker maps input sections to output sections, we | |
7369 | can easily discard it by setting the SEC_EXCLUDE | |
7370 | flag. */ | |
7371 | sec->flags |= SEC_EXCLUDE; | |
7372 | return TRUE; | |
7373 | } | |
7374 | ||
7375 | /* Record this stub in an array of local symbol call_stubs for | |
7376 | this BFD. */ | |
7377 | if (elf_tdata (abfd)->local_call_stubs == NULL) | |
7378 | { | |
7379 | unsigned long symcount; | |
7380 | asection **n; | |
7381 | bfd_size_type amt; | |
7382 | ||
7383 | if (elf_bad_symtab (abfd)) | |
7384 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7385 | else | |
7386 | symcount = symtab_hdr->sh_info; | |
7387 | amt = symcount * sizeof (asection *); | |
7388 | n = bfd_zalloc (abfd, amt); | |
7389 | if (n == NULL) | |
7390 | return FALSE; | |
7391 | elf_tdata (abfd)->local_call_stubs = n; | |
7392 | } | |
b49e97c9 | 7393 | |
b9d58d71 TS |
7394 | sec->flags |= SEC_KEEP; |
7395 | elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; | |
b49e97c9 | 7396 | |
b9d58d71 TS |
7397 | /* We don't need to set mips16_stubs_seen in this case. |
7398 | That flag is used to see whether we need to look through | |
7399 | the global symbol table for stubs. We don't need to set | |
7400 | it here, because we just have a local stub. */ | |
7401 | } | |
b49e97c9 | 7402 | else |
b49e97c9 | 7403 | { |
b9d58d71 TS |
7404 | h = ((struct mips_elf_link_hash_entry *) |
7405 | sym_hashes[r_symndx - extsymoff]); | |
7406 | ||
7407 | /* H is the symbol this stub is for. */ | |
7408 | ||
7409 | if (CALL_FP_STUB_P (name)) | |
7410 | loc = &h->call_fp_stub; | |
7411 | else | |
7412 | loc = &h->call_stub; | |
7413 | ||
7414 | /* If we already have an appropriate stub for this function, we | |
7415 | don't need another one, so we can discard this one. Since | |
7416 | this function is called before the linker maps input sections | |
7417 | to output sections, we can easily discard it by setting the | |
7418 | SEC_EXCLUDE flag. */ | |
7419 | if (*loc != NULL) | |
7420 | { | |
7421 | sec->flags |= SEC_EXCLUDE; | |
7422 | return TRUE; | |
7423 | } | |
b49e97c9 | 7424 | |
b9d58d71 TS |
7425 | sec->flags |= SEC_KEEP; |
7426 | *loc = sec; | |
7427 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
7428 | } | |
b49e97c9 TS |
7429 | } |
7430 | ||
b49e97c9 | 7431 | sreloc = NULL; |
c224138d | 7432 | contents = NULL; |
b49e97c9 TS |
7433 | for (rel = relocs; rel < rel_end; ++rel) |
7434 | { | |
7435 | unsigned long r_symndx; | |
7436 | unsigned int r_type; | |
7437 | struct elf_link_hash_entry *h; | |
861fb55a | 7438 | bfd_boolean can_make_dynamic_p; |
b49e97c9 TS |
7439 | |
7440 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
7441 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7442 | ||
7443 | if (r_symndx < extsymoff) | |
7444 | h = NULL; | |
7445 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
7446 | { | |
7447 | (*_bfd_error_handler) | |
d003868e AM |
7448 | (_("%B: Malformed reloc detected for section %s"), |
7449 | abfd, name); | |
b49e97c9 | 7450 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7451 | return FALSE; |
b49e97c9 TS |
7452 | } |
7453 | else | |
7454 | { | |
7455 | h = sym_hashes[r_symndx - extsymoff]; | |
3e08fb72 NC |
7456 | while (h != NULL |
7457 | && (h->root.type == bfd_link_hash_indirect | |
7458 | || h->root.type == bfd_link_hash_warning)) | |
861fb55a DJ |
7459 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
7460 | } | |
b49e97c9 | 7461 | |
861fb55a DJ |
7462 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
7463 | relocation into a dynamic one. */ | |
7464 | can_make_dynamic_p = FALSE; | |
7465 | switch (r_type) | |
7466 | { | |
7467 | case R_MIPS16_GOT16: | |
7468 | case R_MIPS16_CALL16: | |
7469 | case R_MIPS_GOT16: | |
7470 | case R_MIPS_CALL16: | |
7471 | case R_MIPS_CALL_HI16: | |
7472 | case R_MIPS_CALL_LO16: | |
7473 | case R_MIPS_GOT_HI16: | |
7474 | case R_MIPS_GOT_LO16: | |
7475 | case R_MIPS_GOT_PAGE: | |
7476 | case R_MIPS_GOT_OFST: | |
7477 | case R_MIPS_GOT_DISP: | |
7478 | case R_MIPS_TLS_GOTTPREL: | |
7479 | case R_MIPS_TLS_GD: | |
7480 | case R_MIPS_TLS_LDM: | |
7481 | if (dynobj == NULL) | |
7482 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7483 | if (!mips_elf_create_got_section (dynobj, info)) | |
7484 | return FALSE; | |
7485 | if (htab->is_vxworks && !info->shared) | |
b49e97c9 | 7486 | { |
861fb55a DJ |
7487 | (*_bfd_error_handler) |
7488 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
7489 | abfd, (unsigned long) rel->r_offset); | |
7490 | bfd_set_error (bfd_error_bad_value); | |
7491 | return FALSE; | |
b49e97c9 | 7492 | } |
861fb55a | 7493 | break; |
b49e97c9 | 7494 | |
861fb55a DJ |
7495 | case R_MIPS_32: |
7496 | case R_MIPS_REL32: | |
7497 | case R_MIPS_64: | |
7498 | /* In VxWorks executables, references to external symbols | |
7499 | must be handled using copy relocs or PLT entries; it is not | |
7500 | possible to convert this relocation into a dynamic one. | |
7501 | ||
7502 | For executables that use PLTs and copy-relocs, we have a | |
7503 | choice between converting the relocation into a dynamic | |
7504 | one or using copy relocations or PLT entries. It is | |
7505 | usually better to do the former, unless the relocation is | |
7506 | against a read-only section. */ | |
7507 | if ((info->shared | |
7508 | || (h != NULL | |
7509 | && !htab->is_vxworks | |
7510 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
7511 | && !(!info->nocopyreloc | |
7512 | && !PIC_OBJECT_P (abfd) | |
7513 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
7514 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 7515 | { |
861fb55a | 7516 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
7517 | if (dynobj == NULL) |
7518 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
b49e97c9 | 7519 | break; |
861fb55a DJ |
7520 | } |
7521 | /* Fall through. */ | |
b49e97c9 | 7522 | |
861fb55a DJ |
7523 | default: |
7524 | /* Most static relocations require pointer equality, except | |
7525 | for branches. */ | |
7526 | if (h) | |
7527 | h->pointer_equality_needed = TRUE; | |
7528 | /* Fall through. */ | |
b49e97c9 | 7529 | |
861fb55a DJ |
7530 | case R_MIPS_26: |
7531 | case R_MIPS_PC16: | |
7532 | case R_MIPS16_26: | |
7533 | if (h) | |
7534 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE; | |
7535 | break; | |
b49e97c9 TS |
7536 | } |
7537 | ||
0a44bf69 RS |
7538 | if (h) |
7539 | { | |
0a44bf69 RS |
7540 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
7541 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
7542 | room for them in .rela.dyn. */ | |
7543 | if (is_gott_symbol (info, h)) | |
7544 | { | |
7545 | if (sreloc == NULL) | |
7546 | { | |
7547 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
7548 | if (sreloc == NULL) | |
7549 | return FALSE; | |
7550 | } | |
7551 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
7552 | if (MIPS_ELF_READONLY_SECTION (sec)) |
7553 | /* We tell the dynamic linker that there are | |
7554 | relocations against the text segment. */ | |
7555 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
7556 | } |
7557 | } | |
7558 | else if (r_type == R_MIPS_CALL_LO16 | |
7559 | || r_type == R_MIPS_GOT_LO16 | |
7560 | || r_type == R_MIPS_GOT_DISP | |
738e5348 | 7561 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
7562 | { |
7563 | /* We may need a local GOT entry for this relocation. We | |
7564 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
7565 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
7566 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
7567 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 7568 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 7569 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 7570 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 RS |
7571 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
7572 | rel->r_addend, info, 0)) | |
f4416af6 | 7573 | return FALSE; |
b49e97c9 TS |
7574 | } |
7575 | ||
861fb55a DJ |
7576 | if (h != NULL && mips_elf_relocation_needs_la25_stub (abfd, r_type)) |
7577 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; | |
7578 | ||
b49e97c9 TS |
7579 | switch (r_type) |
7580 | { | |
7581 | case R_MIPS_CALL16: | |
738e5348 | 7582 | case R_MIPS16_CALL16: |
b49e97c9 TS |
7583 | if (h == NULL) |
7584 | { | |
7585 | (*_bfd_error_handler) | |
d003868e AM |
7586 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
7587 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 7588 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7589 | return FALSE; |
b49e97c9 TS |
7590 | } |
7591 | /* Fall through. */ | |
7592 | ||
7593 | case R_MIPS_CALL_HI16: | |
7594 | case R_MIPS_CALL_LO16: | |
7595 | if (h != NULL) | |
7596 | { | |
d334575b | 7597 | /* VxWorks call relocations point at the function's .got.plt |
0a44bf69 RS |
7598 | entry, which will be allocated by adjust_dynamic_symbol. |
7599 | Otherwise, this symbol requires a global GOT entry. */ | |
8275b357 | 7600 | if ((!htab->is_vxworks || h->forced_local) |
a8028dd0 | 7601 | && !mips_elf_record_global_got_symbol (h, abfd, info, 0)) |
b34976b6 | 7602 | return FALSE; |
b49e97c9 TS |
7603 | |
7604 | /* We need a stub, not a plt entry for the undefined | |
7605 | function. But we record it as if it needs plt. See | |
c152c796 | 7606 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 7607 | h->needs_plt = 1; |
b49e97c9 TS |
7608 | h->type = STT_FUNC; |
7609 | } | |
7610 | break; | |
7611 | ||
0fdc1bf1 AO |
7612 | case R_MIPS_GOT_PAGE: |
7613 | /* If this is a global, overridable symbol, GOT_PAGE will | |
7614 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d | 7615 | if (h) |
0fdc1bf1 AO |
7616 | { |
7617 | struct mips_elf_link_hash_entry *hmips = | |
7618 | (struct mips_elf_link_hash_entry *) h; | |
143d77c5 | 7619 | |
3a3b6725 | 7620 | /* This symbol is definitely not overridable. */ |
f5385ebf | 7621 | if (hmips->root.def_regular |
0fdc1bf1 | 7622 | && ! (info->shared && ! info->symbolic |
f5385ebf | 7623 | && ! hmips->root.forced_local)) |
c224138d | 7624 | h = NULL; |
0fdc1bf1 AO |
7625 | } |
7626 | /* Fall through. */ | |
7627 | ||
738e5348 | 7628 | case R_MIPS16_GOT16: |
b49e97c9 TS |
7629 | case R_MIPS_GOT16: |
7630 | case R_MIPS_GOT_HI16: | |
7631 | case R_MIPS_GOT_LO16: | |
3a3b6725 | 7632 | if (!h || r_type == R_MIPS_GOT_PAGE) |
c224138d | 7633 | { |
3a3b6725 DJ |
7634 | /* This relocation needs (or may need, if h != NULL) a |
7635 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
7636 | know for sure until we know whether the symbol is | |
7637 | preemptible. */ | |
c224138d RS |
7638 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
7639 | { | |
7640 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
7641 | return FALSE; | |
7642 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
7643 | addend = mips_elf_read_rel_addend (abfd, rel, | |
7644 | howto, contents); | |
7645 | if (r_type == R_MIPS_GOT16) | |
7646 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, | |
7647 | contents, &addend); | |
7648 | else | |
7649 | addend <<= howto->rightshift; | |
7650 | } | |
7651 | else | |
7652 | addend = rel->r_addend; | |
a8028dd0 RS |
7653 | if (!mips_elf_record_got_page_entry (info, abfd, r_symndx, |
7654 | addend)) | |
c224138d RS |
7655 | return FALSE; |
7656 | break; | |
7657 | } | |
7658 | /* Fall through. */ | |
7659 | ||
b49e97c9 | 7660 | case R_MIPS_GOT_DISP: |
a8028dd0 | 7661 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, 0)) |
b34976b6 | 7662 | return FALSE; |
b49e97c9 TS |
7663 | break; |
7664 | ||
0f20cc35 DJ |
7665 | case R_MIPS_TLS_GOTTPREL: |
7666 | if (info->shared) | |
7667 | info->flags |= DF_STATIC_TLS; | |
7668 | /* Fall through */ | |
7669 | ||
7670 | case R_MIPS_TLS_LDM: | |
7671 | if (r_type == R_MIPS_TLS_LDM) | |
7672 | { | |
7673 | r_symndx = 0; | |
7674 | h = NULL; | |
7675 | } | |
7676 | /* Fall through */ | |
7677 | ||
7678 | case R_MIPS_TLS_GD: | |
7679 | /* This symbol requires a global offset table entry, or two | |
7680 | for TLS GD relocations. */ | |
7681 | { | |
7682 | unsigned char flag = (r_type == R_MIPS_TLS_GD | |
7683 | ? GOT_TLS_GD | |
7684 | : r_type == R_MIPS_TLS_LDM | |
7685 | ? GOT_TLS_LDM | |
7686 | : GOT_TLS_IE); | |
7687 | if (h != NULL) | |
7688 | { | |
7689 | struct mips_elf_link_hash_entry *hmips = | |
7690 | (struct mips_elf_link_hash_entry *) h; | |
7691 | hmips->tls_type |= flag; | |
7692 | ||
a8028dd0 RS |
7693 | if (h && !mips_elf_record_global_got_symbol (h, abfd, |
7694 | info, flag)) | |
0f20cc35 DJ |
7695 | return FALSE; |
7696 | } | |
7697 | else | |
7698 | { | |
7699 | BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != 0); | |
7700 | ||
a8028dd0 RS |
7701 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
7702 | rel->r_addend, | |
7703 | info, flag)) | |
0f20cc35 DJ |
7704 | return FALSE; |
7705 | } | |
7706 | } | |
7707 | break; | |
7708 | ||
b49e97c9 TS |
7709 | case R_MIPS_32: |
7710 | case R_MIPS_REL32: | |
7711 | case R_MIPS_64: | |
0a44bf69 RS |
7712 | /* In VxWorks executables, references to external symbols |
7713 | are handled using copy relocs or PLT stubs, so there's | |
7714 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 7715 | if (can_make_dynamic_p) |
b49e97c9 TS |
7716 | { |
7717 | if (sreloc == NULL) | |
7718 | { | |
0a44bf69 | 7719 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 7720 | if (sreloc == NULL) |
f4416af6 | 7721 | return FALSE; |
b49e97c9 | 7722 | } |
9a59ad6b | 7723 | if (info->shared && h == NULL) |
82f0cfbd EC |
7724 | { |
7725 | /* When creating a shared object, we must copy these | |
7726 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
7727 | relocs. Make room for this reloc in .rel(a).dyn. */ |
7728 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 7729 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7730 | /* We tell the dynamic linker that there are |
7731 | relocations against the text segment. */ | |
7732 | info->flags |= DF_TEXTREL; | |
7733 | } | |
b49e97c9 TS |
7734 | else |
7735 | { | |
7736 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 7737 | |
9a59ad6b DJ |
7738 | /* For a shared object, we must copy this relocation |
7739 | unless the symbol turns out to be undefined and | |
7740 | weak with non-default visibility, in which case | |
7741 | it will be left as zero. | |
7742 | ||
7743 | We could elide R_MIPS_REL32 for locally binding symbols | |
7744 | in shared libraries, but do not yet do so. | |
7745 | ||
7746 | For an executable, we only need to copy this | |
7747 | reloc if the symbol is defined in a dynamic | |
7748 | object. */ | |
b49e97c9 TS |
7749 | hmips = (struct mips_elf_link_hash_entry *) h; |
7750 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 7751 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7752 | /* We need it to tell the dynamic linker if there |
7753 | are relocations against the text segment. */ | |
7754 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 7755 | } |
b49e97c9 TS |
7756 | } |
7757 | ||
7758 | if (SGI_COMPAT (abfd)) | |
7759 | mips_elf_hash_table (info)->compact_rel_size += | |
7760 | sizeof (Elf32_External_crinfo); | |
7761 | break; | |
7762 | ||
7763 | case R_MIPS_26: | |
7764 | case R_MIPS_GPREL16: | |
7765 | case R_MIPS_LITERAL: | |
7766 | case R_MIPS_GPREL32: | |
7767 | if (SGI_COMPAT (abfd)) | |
7768 | mips_elf_hash_table (info)->compact_rel_size += | |
7769 | sizeof (Elf32_External_crinfo); | |
7770 | break; | |
7771 | ||
7772 | /* This relocation describes the C++ object vtable hierarchy. | |
7773 | Reconstruct it for later use during GC. */ | |
7774 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 7775 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 7776 | return FALSE; |
b49e97c9 TS |
7777 | break; |
7778 | ||
7779 | /* This relocation describes which C++ vtable entries are actually | |
7780 | used. Record for later use during GC. */ | |
7781 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
7782 | BFD_ASSERT (h != NULL); |
7783 | if (h != NULL | |
7784 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 7785 | return FALSE; |
b49e97c9 TS |
7786 | break; |
7787 | ||
7788 | default: | |
7789 | break; | |
7790 | } | |
7791 | ||
7792 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
7793 | related to taking the function's address. This doesn't apply to |
7794 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
7795 | a normal .got entry. */ | |
7796 | if (!htab->is_vxworks && h != NULL) | |
7797 | switch (r_type) | |
7798 | { | |
7799 | default: | |
7800 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
7801 | break; | |
738e5348 | 7802 | case R_MIPS16_CALL16: |
0a44bf69 RS |
7803 | case R_MIPS_CALL16: |
7804 | case R_MIPS_CALL_HI16: | |
7805 | case R_MIPS_CALL_LO16: | |
7806 | case R_MIPS_JALR: | |
7807 | break; | |
7808 | } | |
b49e97c9 | 7809 | |
738e5348 RS |
7810 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
7811 | if there is one. We only need to handle global symbols here; | |
7812 | we decide whether to keep or delete stubs for local symbols | |
7813 | when processing the stub's relocations. */ | |
b49e97c9 | 7814 | if (h != NULL |
738e5348 RS |
7815 | && !mips16_call_reloc_p (r_type) |
7816 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
7817 | { |
7818 | struct mips_elf_link_hash_entry *mh; | |
7819 | ||
7820 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 7821 | mh->need_fn_stub = TRUE; |
b49e97c9 | 7822 | } |
861fb55a DJ |
7823 | |
7824 | /* Refuse some position-dependent relocations when creating a | |
7825 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
7826 | not PIC, but we can create dynamic relocations and the result | |
7827 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
7828 | combined with R_MIPS_GOT16. */ | |
7829 | if (info->shared) | |
7830 | { | |
7831 | switch (r_type) | |
7832 | { | |
7833 | case R_MIPS16_HI16: | |
7834 | case R_MIPS_HI16: | |
7835 | case R_MIPS_HIGHER: | |
7836 | case R_MIPS_HIGHEST: | |
7837 | /* Don't refuse a high part relocation if it's against | |
7838 | no symbol (e.g. part of a compound relocation). */ | |
7839 | if (r_symndx == 0) | |
7840 | break; | |
7841 | ||
7842 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
7843 | and has a special meaning. */ | |
7844 | if (!NEWABI_P (abfd) && h != NULL | |
7845 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
7846 | break; | |
7847 | ||
7848 | /* FALLTHROUGH */ | |
7849 | ||
7850 | case R_MIPS16_26: | |
7851 | case R_MIPS_26: | |
7852 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
7853 | (*_bfd_error_handler) | |
7854 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
7855 | abfd, howto->name, | |
7856 | (h) ? h->root.root.string : "a local symbol"); | |
7857 | bfd_set_error (bfd_error_bad_value); | |
7858 | return FALSE; | |
7859 | default: | |
7860 | break; | |
7861 | } | |
7862 | } | |
b49e97c9 TS |
7863 | } |
7864 | ||
b34976b6 | 7865 | return TRUE; |
b49e97c9 TS |
7866 | } |
7867 | \f | |
d0647110 | 7868 | bfd_boolean |
9719ad41 RS |
7869 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
7870 | struct bfd_link_info *link_info, | |
7871 | bfd_boolean *again) | |
d0647110 AO |
7872 | { |
7873 | Elf_Internal_Rela *internal_relocs; | |
7874 | Elf_Internal_Rela *irel, *irelend; | |
7875 | Elf_Internal_Shdr *symtab_hdr; | |
7876 | bfd_byte *contents = NULL; | |
d0647110 AO |
7877 | size_t extsymoff; |
7878 | bfd_boolean changed_contents = FALSE; | |
7879 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
7880 | Elf_Internal_Sym *isymbuf = NULL; | |
7881 | ||
7882 | /* We are not currently changing any sizes, so only one pass. */ | |
7883 | *again = FALSE; | |
7884 | ||
1049f94e | 7885 | if (link_info->relocatable) |
d0647110 AO |
7886 | return TRUE; |
7887 | ||
9719ad41 | 7888 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 7889 | link_info->keep_memory); |
d0647110 AO |
7890 | if (internal_relocs == NULL) |
7891 | return TRUE; | |
7892 | ||
7893 | irelend = internal_relocs + sec->reloc_count | |
7894 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
7895 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7896 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7897 | ||
7898 | for (irel = internal_relocs; irel < irelend; irel++) | |
7899 | { | |
7900 | bfd_vma symval; | |
7901 | bfd_signed_vma sym_offset; | |
7902 | unsigned int r_type; | |
7903 | unsigned long r_symndx; | |
7904 | asection *sym_sec; | |
7905 | unsigned long instruction; | |
7906 | ||
7907 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
7908 | with a JALR relocation, that indicate where they jump to. | |
7909 | This saves some pipeline bubbles. */ | |
7910 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
7911 | if (r_type != R_MIPS_JALR) | |
7912 | continue; | |
7913 | ||
7914 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
7915 | /* Compute the address of the jump target. */ | |
7916 | if (r_symndx >= extsymoff) | |
7917 | { | |
7918 | struct mips_elf_link_hash_entry *h | |
7919 | = ((struct mips_elf_link_hash_entry *) | |
7920 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
7921 | ||
7922 | while (h->root.root.type == bfd_link_hash_indirect | |
7923 | || h->root.root.type == bfd_link_hash_warning) | |
7924 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 7925 | |
d0647110 AO |
7926 | /* If a symbol is undefined, or if it may be overridden, |
7927 | skip it. */ | |
7928 | if (! ((h->root.root.type == bfd_link_hash_defined | |
7929 | || h->root.root.type == bfd_link_hash_defweak) | |
7930 | && h->root.root.u.def.section) | |
7931 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 7932 | && !h->root.forced_local)) |
d0647110 AO |
7933 | continue; |
7934 | ||
7935 | sym_sec = h->root.root.u.def.section; | |
7936 | if (sym_sec->output_section) | |
7937 | symval = (h->root.root.u.def.value | |
7938 | + sym_sec->output_section->vma | |
7939 | + sym_sec->output_offset); | |
7940 | else | |
7941 | symval = h->root.root.u.def.value; | |
7942 | } | |
7943 | else | |
7944 | { | |
7945 | Elf_Internal_Sym *isym; | |
7946 | ||
7947 | /* Read this BFD's symbols if we haven't done so already. */ | |
7948 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
7949 | { | |
7950 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7951 | if (isymbuf == NULL) | |
7952 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
7953 | symtab_hdr->sh_info, 0, | |
7954 | NULL, NULL, NULL); | |
7955 | if (isymbuf == NULL) | |
7956 | goto relax_return; | |
7957 | } | |
7958 | ||
7959 | isym = isymbuf + r_symndx; | |
7960 | if (isym->st_shndx == SHN_UNDEF) | |
7961 | continue; | |
7962 | else if (isym->st_shndx == SHN_ABS) | |
7963 | sym_sec = bfd_abs_section_ptr; | |
7964 | else if (isym->st_shndx == SHN_COMMON) | |
7965 | sym_sec = bfd_com_section_ptr; | |
7966 | else | |
7967 | sym_sec | |
7968 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7969 | symval = isym->st_value | |
7970 | + sym_sec->output_section->vma | |
7971 | + sym_sec->output_offset; | |
7972 | } | |
7973 | ||
7974 | /* Compute branch offset, from delay slot of the jump to the | |
7975 | branch target. */ | |
7976 | sym_offset = (symval + irel->r_addend) | |
7977 | - (sec_start + irel->r_offset + 4); | |
7978 | ||
7979 | /* Branch offset must be properly aligned. */ | |
7980 | if ((sym_offset & 3) != 0) | |
7981 | continue; | |
7982 | ||
7983 | sym_offset >>= 2; | |
7984 | ||
7985 | /* Check that it's in range. */ | |
7986 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
7987 | continue; | |
143d77c5 | 7988 | |
d0647110 | 7989 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
7990 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
7991 | goto relax_return; | |
d0647110 AO |
7992 | |
7993 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
7994 | ||
7995 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
7996 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
7997 | instruction = 0x04110000; | |
7998 | /* If it was jr <reg>, turn it into b <target>. */ | |
7999 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
8000 | instruction = 0x10000000; | |
8001 | else | |
8002 | continue; | |
8003 | ||
8004 | instruction |= (sym_offset & 0xffff); | |
8005 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
8006 | changed_contents = TRUE; | |
8007 | } | |
8008 | ||
8009 | if (contents != NULL | |
8010 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8011 | { | |
8012 | if (!changed_contents && !link_info->keep_memory) | |
8013 | free (contents); | |
8014 | else | |
8015 | { | |
8016 | /* Cache the section contents for elf_link_input_bfd. */ | |
8017 | elf_section_data (sec)->this_hdr.contents = contents; | |
8018 | } | |
8019 | } | |
8020 | return TRUE; | |
8021 | ||
143d77c5 | 8022 | relax_return: |
eea6121a AM |
8023 | if (contents != NULL |
8024 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8025 | free (contents); | |
d0647110 AO |
8026 | return FALSE; |
8027 | } | |
8028 | \f | |
9a59ad6b DJ |
8029 | /* Allocate space for global sym dynamic relocs. */ |
8030 | ||
8031 | static bfd_boolean | |
8032 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8033 | { | |
8034 | struct bfd_link_info *info = inf; | |
8035 | bfd *dynobj; | |
8036 | struct mips_elf_link_hash_entry *hmips; | |
8037 | struct mips_elf_link_hash_table *htab; | |
8038 | ||
8039 | htab = mips_elf_hash_table (info); | |
8040 | dynobj = elf_hash_table (info)->dynobj; | |
8041 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8042 | ||
8043 | /* VxWorks executables are handled elsewhere; we only need to | |
8044 | allocate relocations in shared objects. */ | |
8045 | if (htab->is_vxworks && !info->shared) | |
8046 | return TRUE; | |
8047 | ||
63897e2c RS |
8048 | /* Ignore indirect and warning symbols. All relocations against |
8049 | such symbols will be redirected to the target symbol. */ | |
8050 | if (h->root.type == bfd_link_hash_indirect | |
8051 | || h->root.type == bfd_link_hash_warning) | |
8052 | return TRUE; | |
8053 | ||
9a59ad6b DJ |
8054 | /* If this symbol is defined in a dynamic object, or we are creating |
8055 | a shared library, we will need to copy any R_MIPS_32 or | |
8056 | R_MIPS_REL32 relocs against it into the output file. */ | |
8057 | if (! info->relocatable | |
8058 | && hmips->possibly_dynamic_relocs != 0 | |
8059 | && (h->root.type == bfd_link_hash_defweak | |
8060 | || !h->def_regular | |
8061 | || info->shared)) | |
8062 | { | |
8063 | bfd_boolean do_copy = TRUE; | |
8064 | ||
8065 | if (h->root.type == bfd_link_hash_undefweak) | |
8066 | { | |
8067 | /* Do not copy relocations for undefined weak symbols with | |
8068 | non-default visibility. */ | |
8069 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8070 | do_copy = FALSE; | |
8071 | ||
8072 | /* Make sure undefined weak symbols are output as a dynamic | |
8073 | symbol in PIEs. */ | |
8074 | else if (h->dynindx == -1 && !h->forced_local) | |
8075 | { | |
8076 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8077 | return FALSE; | |
8078 | } | |
8079 | } | |
8080 | ||
8081 | if (do_copy) | |
8082 | { | |
aff469fa RS |
8083 | /* Even though we don't directly need a GOT entry for this symbol, |
8084 | a symbol must have a dynamic symbol table index greater that | |
8085 | DT_MIPS_GOTSYM if there are dynamic relocations against it. */ | |
8086 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8087 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8088 | ||
9a59ad6b DJ |
8089 | mips_elf_allocate_dynamic_relocations |
8090 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8091 | if (hmips->readonly_reloc) | |
8092 | /* We tell the dynamic linker that there are relocations | |
8093 | against the text segment. */ | |
8094 | info->flags |= DF_TEXTREL; | |
8095 | } | |
8096 | } | |
8097 | ||
8098 | return TRUE; | |
8099 | } | |
8100 | ||
b49e97c9 TS |
8101 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8102 | regular object. The current definition is in some section of the | |
8103 | dynamic object, but we're not including those sections. We have to | |
8104 | change the definition to something the rest of the link can | |
8105 | understand. */ | |
8106 | ||
b34976b6 | 8107 | bfd_boolean |
9719ad41 RS |
8108 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
8109 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
8110 | { |
8111 | bfd *dynobj; | |
8112 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 8113 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8114 | |
5108fc1b | 8115 | htab = mips_elf_hash_table (info); |
b49e97c9 | 8116 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 8117 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
8118 | |
8119 | /* Make sure we know what is going on here. */ | |
8120 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8121 | && (h->needs_plt |
f6e332e6 | 8122 | || h->u.weakdef != NULL |
f5385ebf AM |
8123 | || (h->def_dynamic |
8124 | && h->ref_regular | |
8125 | && !h->def_regular))); | |
b49e97c9 | 8126 | |
b49e97c9 | 8127 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8128 | |
861fb55a DJ |
8129 | /* If there are call relocations against an externally-defined symbol, |
8130 | see whether we can create a MIPS lazy-binding stub for it. We can | |
8131 | only do this if all references to the function are through call | |
8132 | relocations, and in that case, the traditional lazy-binding stubs | |
8133 | are much more efficient than PLT entries. | |
8134 | ||
8135 | Traditional stubs are only available on SVR4 psABI-based systems; | |
8136 | VxWorks always uses PLTs instead. */ | |
8137 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
8138 | { |
8139 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 8140 | return TRUE; |
b49e97c9 TS |
8141 | |
8142 | /* If this symbol is not defined in a regular file, then set | |
8143 | the symbol to the stub location. This is required to make | |
8144 | function pointers compare as equal between the normal | |
8145 | executable and the shared library. */ | |
f5385ebf | 8146 | if (!h->def_regular) |
b49e97c9 | 8147 | { |
33bb52fb RS |
8148 | hmips->needs_lazy_stub = TRUE; |
8149 | htab->lazy_stub_count++; | |
b34976b6 | 8150 | return TRUE; |
b49e97c9 TS |
8151 | } |
8152 | } | |
861fb55a DJ |
8153 | /* As above, VxWorks requires PLT entries for externally-defined |
8154 | functions that are only accessed through call relocations. | |
b49e97c9 | 8155 | |
861fb55a DJ |
8156 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
8157 | are static-only relocations against an externally-defined function. | |
8158 | This can technically occur for shared libraries if there are | |
8159 | branches to the symbol, although it is unlikely that this will be | |
8160 | used in practice due to the short ranges involved. It can occur | |
8161 | for any relative or absolute relocation in executables; in that | |
8162 | case, the PLT entry becomes the function's canonical address. */ | |
8163 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
8164 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
8165 | && htab->use_plts_and_copy_relocs | |
8166 | && !SYMBOL_CALLS_LOCAL (info, h) | |
8167 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8168 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 8169 | { |
861fb55a DJ |
8170 | /* If this is the first symbol to need a PLT entry, allocate room |
8171 | for the header. */ | |
8172 | if (htab->splt->size == 0) | |
8173 | { | |
8174 | BFD_ASSERT (htab->sgotplt->size == 0); | |
0a44bf69 | 8175 | |
861fb55a DJ |
8176 | /* If we're using the PLT additions to the psABI, each PLT |
8177 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
8178 | Encourage better cache usage by aligning. We do this | |
8179 | lazily to avoid pessimizing traditional objects. */ | |
8180 | if (!htab->is_vxworks | |
8181 | && !bfd_set_section_alignment (dynobj, htab->splt, 5)) | |
8182 | return FALSE; | |
0a44bf69 | 8183 | |
861fb55a DJ |
8184 | /* Make sure that .got.plt is word-aligned. We do this lazily |
8185 | for the same reason as above. */ | |
8186 | if (!bfd_set_section_alignment (dynobj, htab->sgotplt, | |
8187 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
8188 | return FALSE; | |
0a44bf69 | 8189 | |
861fb55a | 8190 | htab->splt->size += htab->plt_header_size; |
0a44bf69 | 8191 | |
861fb55a DJ |
8192 | /* On non-VxWorks targets, the first two entries in .got.plt |
8193 | are reserved. */ | |
8194 | if (!htab->is_vxworks) | |
8195 | htab->sgotplt->size += 2 * MIPS_ELF_GOT_SIZE (dynobj); | |
0a44bf69 | 8196 | |
861fb55a DJ |
8197 | /* On VxWorks, also allocate room for the header's |
8198 | .rela.plt.unloaded entries. */ | |
8199 | if (htab->is_vxworks && !info->shared) | |
0a44bf69 RS |
8200 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
8201 | } | |
8202 | ||
8203 | /* Assign the next .plt entry to this symbol. */ | |
8204 | h->plt.offset = htab->splt->size; | |
8205 | htab->splt->size += htab->plt_entry_size; | |
8206 | ||
8207 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 8208 | symbol's value to the address of the stub. */ |
131eb6b7 | 8209 | if (!info->shared && !h->def_regular) |
0a44bf69 RS |
8210 | { |
8211 | h->root.u.def.section = htab->splt; | |
8212 | h->root.u.def.value = h->plt.offset; | |
861fb55a DJ |
8213 | /* For VxWorks, point at the PLT load stub rather than the |
8214 | lazy resolution stub; this stub will become the canonical | |
8215 | function address. */ | |
8216 | if (htab->is_vxworks) | |
8217 | h->root.u.def.value += 8; | |
0a44bf69 RS |
8218 | } |
8219 | ||
861fb55a DJ |
8220 | /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT |
8221 | relocation. */ | |
8222 | htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj); | |
8223 | htab->srelplt->size += (htab->is_vxworks | |
8224 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
8225 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
8226 | |
8227 | /* Make room for the .rela.plt.unloaded relocations. */ | |
861fb55a | 8228 | if (htab->is_vxworks && !info->shared) |
0a44bf69 RS |
8229 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
8230 | ||
861fb55a DJ |
8231 | /* All relocations against this symbol that could have been made |
8232 | dynamic will now refer to the PLT entry instead. */ | |
8233 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 8234 | |
0a44bf69 RS |
8235 | return TRUE; |
8236 | } | |
8237 | ||
8238 | /* If this is a weak symbol, and there is a real definition, the | |
8239 | processor independent code will have arranged for us to see the | |
8240 | real definition first, and we can just use the same value. */ | |
8241 | if (h->u.weakdef != NULL) | |
8242 | { | |
8243 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
8244 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8245 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8246 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
8247 | return TRUE; | |
8248 | } | |
8249 | ||
861fb55a DJ |
8250 | /* Otherwise, there is nothing further to do for symbols defined |
8251 | in regular objects. */ | |
8252 | if (h->def_regular) | |
0a44bf69 RS |
8253 | return TRUE; |
8254 | ||
861fb55a DJ |
8255 | /* There's also nothing more to do if we'll convert all relocations |
8256 | against this symbol into dynamic relocations. */ | |
8257 | if (!hmips->has_static_relocs) | |
8258 | return TRUE; | |
8259 | ||
8260 | /* We're now relying on copy relocations. Complain if we have | |
8261 | some that we can't convert. */ | |
8262 | if (!htab->use_plts_and_copy_relocs || info->shared) | |
8263 | { | |
8264 | (*_bfd_error_handler) (_("non-dynamic relocations refer to " | |
8265 | "dynamic symbol %s"), | |
8266 | h->root.root.string); | |
8267 | bfd_set_error (bfd_error_bad_value); | |
8268 | return FALSE; | |
8269 | } | |
8270 | ||
0a44bf69 RS |
8271 | /* We must allocate the symbol in our .dynbss section, which will |
8272 | become part of the .bss section of the executable. There will be | |
8273 | an entry for this symbol in the .dynsym section. The dynamic | |
8274 | object will contain position independent code, so all references | |
8275 | from the dynamic object to this symbol will go through the global | |
8276 | offset table. The dynamic linker will use the .dynsym entry to | |
8277 | determine the address it must put in the global offset table, so | |
8278 | both the dynamic object and the regular object will refer to the | |
8279 | same memory location for the variable. */ | |
8280 | ||
8281 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
8282 | { | |
861fb55a DJ |
8283 | if (htab->is_vxworks) |
8284 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
8285 | else | |
8286 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
8287 | h->needs_copy = 1; |
8288 | } | |
8289 | ||
861fb55a DJ |
8290 | /* All relocations against this symbol that could have been made |
8291 | dynamic will now refer to the local copy instead. */ | |
8292 | hmips->possibly_dynamic_relocs = 0; | |
8293 | ||
027297b7 | 8294 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 8295 | } |
b49e97c9 TS |
8296 | \f |
8297 | /* This function is called after all the input files have been read, | |
8298 | and the input sections have been assigned to output sections. We | |
8299 | check for any mips16 stub sections that we can discard. */ | |
8300 | ||
b34976b6 | 8301 | bfd_boolean |
9719ad41 RS |
8302 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
8303 | struct bfd_link_info *info) | |
b49e97c9 TS |
8304 | { |
8305 | asection *ri; | |
0a44bf69 | 8306 | struct mips_elf_link_hash_table *htab; |
861fb55a | 8307 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
8308 | |
8309 | htab = mips_elf_hash_table (info); | |
f4416af6 | 8310 | |
b49e97c9 TS |
8311 | /* The .reginfo section has a fixed size. */ |
8312 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8313 | if (ri != NULL) | |
9719ad41 | 8314 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 8315 | |
861fb55a DJ |
8316 | hti.info = info; |
8317 | hti.output_bfd = output_bfd; | |
8318 | hti.error = FALSE; | |
8319 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8320 | mips_elf_check_symbols, &hti); | |
8321 | if (hti.error) | |
8322 | return FALSE; | |
f4416af6 | 8323 | |
33bb52fb RS |
8324 | return TRUE; |
8325 | } | |
8326 | ||
8327 | /* If the link uses a GOT, lay it out and work out its size. */ | |
8328 | ||
8329 | static bfd_boolean | |
8330 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
8331 | { | |
8332 | bfd *dynobj; | |
8333 | asection *s; | |
8334 | struct mips_got_info *g; | |
33bb52fb RS |
8335 | bfd_size_type loadable_size = 0; |
8336 | bfd_size_type page_gotno; | |
8337 | bfd *sub; | |
8338 | struct mips_elf_count_tls_arg count_tls_arg; | |
8339 | struct mips_elf_link_hash_table *htab; | |
8340 | ||
8341 | htab = mips_elf_hash_table (info); | |
a8028dd0 | 8342 | s = htab->sgot; |
f4416af6 | 8343 | if (s == NULL) |
b34976b6 | 8344 | return TRUE; |
b49e97c9 | 8345 | |
33bb52fb | 8346 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
8347 | g = htab->got_info; |
8348 | ||
861fb55a DJ |
8349 | /* Allocate room for the reserved entries. VxWorks always reserves |
8350 | 3 entries; other objects only reserve 2 entries. */ | |
8351 | BFD_ASSERT (g->assigned_gotno == 0); | |
8352 | if (htab->is_vxworks) | |
8353 | htab->reserved_gotno = 3; | |
8354 | else | |
8355 | htab->reserved_gotno = 2; | |
8356 | g->local_gotno += htab->reserved_gotno; | |
8357 | g->assigned_gotno = htab->reserved_gotno; | |
8358 | ||
33bb52fb RS |
8359 | /* Replace entries for indirect and warning symbols with entries for |
8360 | the target symbol. */ | |
8361 | if (!mips_elf_resolve_final_got_entries (g)) | |
8362 | return FALSE; | |
f4416af6 | 8363 | |
d4596a51 RS |
8364 | /* Count the number of GOT symbols. */ |
8365 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, g); | |
f4416af6 | 8366 | |
33bb52fb RS |
8367 | /* Calculate the total loadable size of the output. That |
8368 | will give us the maximum number of GOT_PAGE entries | |
8369 | required. */ | |
8370 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
8371 | { | |
8372 | asection *subsection; | |
5108fc1b | 8373 | |
33bb52fb RS |
8374 | for (subsection = sub->sections; |
8375 | subsection; | |
8376 | subsection = subsection->next) | |
8377 | { | |
8378 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8379 | continue; | |
8380 | loadable_size += ((subsection->size + 0xf) | |
8381 | &~ (bfd_size_type) 0xf); | |
8382 | } | |
8383 | } | |
f4416af6 | 8384 | |
0a44bf69 | 8385 | if (htab->is_vxworks) |
738e5348 | 8386 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
8387 | relocations against local symbols evaluate to "G", and the EABI does |
8388 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 8389 | page_gotno = 0; |
0a44bf69 RS |
8390 | else |
8391 | /* Assume there are two loadable segments consisting of contiguous | |
8392 | sections. Is 5 enough? */ | |
c224138d RS |
8393 | page_gotno = (loadable_size >> 16) + 5; |
8394 | ||
8395 | /* Choose the smaller of the two estimates; both are intended to be | |
8396 | conservative. */ | |
8397 | if (page_gotno > g->page_gotno) | |
8398 | page_gotno = g->page_gotno; | |
f4416af6 | 8399 | |
c224138d | 8400 | g->local_gotno += page_gotno; |
eea6121a | 8401 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
d4596a51 | 8402 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 | 8403 | |
0f20cc35 DJ |
8404 | /* We need to calculate tls_gotno for global symbols at this point |
8405 | instead of building it up earlier, to avoid doublecounting | |
8406 | entries for one global symbol from multiple input files. */ | |
8407 | count_tls_arg.info = info; | |
8408 | count_tls_arg.needed = 0; | |
8409 | elf_link_hash_traverse (elf_hash_table (info), | |
8410 | mips_elf_count_global_tls_entries, | |
8411 | &count_tls_arg); | |
8412 | g->tls_gotno += count_tls_arg.needed; | |
8413 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
8414 | ||
0a44bf69 RS |
8415 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
8416 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
8417 | dynamic loader. */ | |
33bb52fb RS |
8418 | if (htab->is_vxworks) |
8419 | { | |
8420 | /* VxWorks executables do not need a GOT. */ | |
8421 | if (info->shared) | |
8422 | { | |
8423 | /* Each VxWorks GOT entry needs an explicit relocation. */ | |
8424 | unsigned int count; | |
8425 | ||
861fb55a | 8426 | count = g->global_gotno + g->local_gotno - htab->reserved_gotno; |
33bb52fb RS |
8427 | if (count) |
8428 | mips_elf_allocate_dynamic_relocations (dynobj, info, count); | |
8429 | } | |
8430 | } | |
8431 | else if (s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 8432 | { |
a8028dd0 | 8433 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
8434 | return FALSE; |
8435 | } | |
8436 | else | |
8437 | { | |
33bb52fb RS |
8438 | struct mips_elf_count_tls_arg arg; |
8439 | ||
8440 | /* Set up TLS entries. */ | |
0f20cc35 DJ |
8441 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
8442 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
33bb52fb RS |
8443 | |
8444 | /* Allocate room for the TLS relocations. */ | |
8445 | arg.info = info; | |
8446 | arg.needed = 0; | |
8447 | htab_traverse (g->got_entries, mips_elf_count_local_tls_relocs, &arg); | |
8448 | elf_link_hash_traverse (elf_hash_table (info), | |
8449 | mips_elf_count_global_tls_relocs, | |
8450 | &arg); | |
8451 | if (arg.needed) | |
8452 | mips_elf_allocate_dynamic_relocations (dynobj, info, arg.needed); | |
0f20cc35 | 8453 | } |
b49e97c9 | 8454 | |
b34976b6 | 8455 | return TRUE; |
b49e97c9 TS |
8456 | } |
8457 | ||
33bb52fb RS |
8458 | /* Estimate the size of the .MIPS.stubs section. */ |
8459 | ||
8460 | static void | |
8461 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
8462 | { | |
8463 | struct mips_elf_link_hash_table *htab; | |
8464 | bfd_size_type dynsymcount; | |
8465 | ||
8466 | htab = mips_elf_hash_table (info); | |
8467 | if (htab->lazy_stub_count == 0) | |
8468 | return; | |
8469 | ||
8470 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
8471 | section, so add a dummy entry to the end. */ | |
8472 | htab->lazy_stub_count++; | |
8473 | ||
8474 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
8475 | At this point, dynsymcount does not account for section symbols | |
8476 | and count_section_dynsyms may overestimate the number that will | |
8477 | be needed. */ | |
8478 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
8479 | + count_section_dynsyms (output_bfd, info)); | |
8480 | ||
8481 | /* Determine the size of one stub entry. */ | |
8482 | htab->function_stub_size = (dynsymcount > 0x10000 | |
8483 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
8484 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
8485 | ||
8486 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
8487 | } | |
8488 | ||
8489 | /* A mips_elf_link_hash_traverse callback for which DATA points to the | |
8490 | MIPS hash table. If H needs a traditional MIPS lazy-binding stub, | |
8491 | allocate an entry in the stubs section. */ | |
8492 | ||
8493 | static bfd_boolean | |
8494 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void **data) | |
8495 | { | |
8496 | struct mips_elf_link_hash_table *htab; | |
8497 | ||
8498 | htab = (struct mips_elf_link_hash_table *) data; | |
8499 | if (h->needs_lazy_stub) | |
8500 | { | |
8501 | h->root.root.u.def.section = htab->sstubs; | |
8502 | h->root.root.u.def.value = htab->sstubs->size; | |
8503 | h->root.plt.offset = htab->sstubs->size; | |
8504 | htab->sstubs->size += htab->function_stub_size; | |
8505 | } | |
8506 | return TRUE; | |
8507 | } | |
8508 | ||
8509 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
8510 | Set the final size of the .MIPS.stub section. */ | |
8511 | ||
8512 | static void | |
8513 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) | |
8514 | { | |
8515 | struct mips_elf_link_hash_table *htab; | |
8516 | ||
8517 | htab = mips_elf_hash_table (info); | |
8518 | if (htab->lazy_stub_count == 0) | |
8519 | return; | |
8520 | ||
8521 | htab->sstubs->size = 0; | |
8522 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8523 | mips_elf_allocate_lazy_stub, htab); | |
8524 | htab->sstubs->size += htab->function_stub_size; | |
8525 | BFD_ASSERT (htab->sstubs->size | |
8526 | == htab->lazy_stub_count * htab->function_stub_size); | |
8527 | } | |
8528 | ||
b49e97c9 TS |
8529 | /* Set the sizes of the dynamic sections. */ |
8530 | ||
b34976b6 | 8531 | bfd_boolean |
9719ad41 RS |
8532 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
8533 | struct bfd_link_info *info) | |
b49e97c9 TS |
8534 | { |
8535 | bfd *dynobj; | |
861fb55a | 8536 | asection *s, *sreldyn; |
b34976b6 | 8537 | bfd_boolean reltext; |
0a44bf69 | 8538 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8539 | |
0a44bf69 | 8540 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
8541 | dynobj = elf_hash_table (info)->dynobj; |
8542 | BFD_ASSERT (dynobj != NULL); | |
8543 | ||
8544 | if (elf_hash_table (info)->dynamic_sections_created) | |
8545 | { | |
8546 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 8547 | if (info->executable) |
b49e97c9 TS |
8548 | { |
8549 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8550 | BFD_ASSERT (s != NULL); | |
eea6121a | 8551 | s->size |
b49e97c9 TS |
8552 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
8553 | s->contents | |
8554 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
8555 | } | |
861fb55a DJ |
8556 | |
8557 | /* Create a symbol for the PLT, if we know that we are using it. */ | |
8558 | if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL) | |
8559 | { | |
8560 | struct elf_link_hash_entry *h; | |
8561 | ||
8562 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
8563 | ||
8564 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt, | |
8565 | "_PROCEDURE_LINKAGE_TABLE_"); | |
8566 | htab->root.hplt = h; | |
8567 | if (h == NULL) | |
8568 | return FALSE; | |
8569 | h->type = STT_FUNC; | |
8570 | } | |
8571 | } | |
4e41d0d7 | 8572 | |
9a59ad6b DJ |
8573 | /* Allocate space for global sym dynamic relocs. */ |
8574 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (PTR) info); | |
8575 | ||
33bb52fb RS |
8576 | mips_elf_estimate_stub_size (output_bfd, info); |
8577 | ||
8578 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
8579 | return FALSE; | |
8580 | ||
8581 | mips_elf_lay_out_lazy_stubs (info); | |
8582 | ||
b49e97c9 TS |
8583 | /* The check_relocs and adjust_dynamic_symbol entry points have |
8584 | determined the sizes of the various dynamic sections. Allocate | |
8585 | memory for them. */ | |
b34976b6 | 8586 | reltext = FALSE; |
b49e97c9 TS |
8587 | for (s = dynobj->sections; s != NULL; s = s->next) |
8588 | { | |
8589 | const char *name; | |
b49e97c9 TS |
8590 | |
8591 | /* It's OK to base decisions on the section name, because none | |
8592 | of the dynobj section names depend upon the input files. */ | |
8593 | name = bfd_get_section_name (dynobj, s); | |
8594 | ||
8595 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8596 | continue; | |
8597 | ||
0112cd26 | 8598 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 8599 | { |
c456f082 | 8600 | if (s->size != 0) |
b49e97c9 TS |
8601 | { |
8602 | const char *outname; | |
8603 | asection *target; | |
8604 | ||
8605 | /* If this relocation section applies to a read only | |
8606 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 8607 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
8608 | assert a DT_TEXTREL entry rather than testing whether |
8609 | there exists a relocation to a read only section or | |
8610 | not. */ | |
8611 | outname = bfd_get_section_name (output_bfd, | |
8612 | s->output_section); | |
8613 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
8614 | if ((target != NULL | |
8615 | && (target->flags & SEC_READONLY) != 0 | |
8616 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 8617 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 8618 | reltext = TRUE; |
b49e97c9 TS |
8619 | |
8620 | /* We use the reloc_count field as a counter if we need | |
8621 | to copy relocs into the output file. */ | |
0a44bf69 | 8622 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 8623 | s->reloc_count = 0; |
f4416af6 AO |
8624 | |
8625 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
8626 | sort relocations, but in a different way than we do, | |
8627 | and before we're done creating relocations. Also, it | |
8628 | will move them around between input sections' | |
8629 | relocation's contents, so our sorting would be | |
8630 | broken, so don't let it run. */ | |
8631 | info->combreloc = 0; | |
b49e97c9 TS |
8632 | } |
8633 | } | |
b49e97c9 TS |
8634 | else if (! info->shared |
8635 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 8636 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 8637 | { |
5108fc1b | 8638 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 8639 | rtld to contain a pointer to the _r_debug structure. */ |
eea6121a | 8640 | s->size += 4; |
b49e97c9 TS |
8641 | } |
8642 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 8643 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 8644 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
861fb55a DJ |
8645 | else if (s == htab->splt) |
8646 | { | |
8647 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
8648 | room for an extra nop to fill the delay slot. This is |
8649 | for CPUs without load interlocking. */ | |
8650 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
8651 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
8652 | s->size += 4; |
8653 | } | |
0112cd26 | 8654 | else if (! CONST_STRNEQ (name, ".init") |
33bb52fb | 8655 | && s != htab->sgot |
0a44bf69 | 8656 | && s != htab->sgotplt |
861fb55a DJ |
8657 | && s != htab->sstubs |
8658 | && s != htab->sdynbss) | |
b49e97c9 TS |
8659 | { |
8660 | /* It's not one of our sections, so don't allocate space. */ | |
8661 | continue; | |
8662 | } | |
8663 | ||
c456f082 | 8664 | if (s->size == 0) |
b49e97c9 | 8665 | { |
8423293d | 8666 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
8667 | continue; |
8668 | } | |
8669 | ||
c456f082 AM |
8670 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
8671 | continue; | |
8672 | ||
b49e97c9 | 8673 | /* Allocate memory for the section contents. */ |
eea6121a | 8674 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 8675 | if (s->contents == NULL) |
b49e97c9 TS |
8676 | { |
8677 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 8678 | return FALSE; |
b49e97c9 TS |
8679 | } |
8680 | } | |
8681 | ||
8682 | if (elf_hash_table (info)->dynamic_sections_created) | |
8683 | { | |
8684 | /* Add some entries to the .dynamic section. We fill in the | |
8685 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
8686 | must add the entries now so that we get the correct size for | |
5750dcec | 8687 | the .dynamic section. */ |
af5978fb RS |
8688 | |
8689 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec DJ |
8690 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
8691 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and GDB only | |
8692 | looks at the first one it sees. */ | |
af5978fb RS |
8693 | if (!info->shared |
8694 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
8695 | return FALSE; | |
b49e97c9 | 8696 | |
5750dcec DJ |
8697 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
8698 | used by the debugger. */ | |
8699 | if (info->executable | |
8700 | && !SGI_COMPAT (output_bfd) | |
8701 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
8702 | return FALSE; | |
8703 | ||
0a44bf69 | 8704 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
8705 | info->flags |= DF_TEXTREL; |
8706 | ||
8707 | if ((info->flags & DF_TEXTREL) != 0) | |
8708 | { | |
8709 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 8710 | return FALSE; |
943284cc DJ |
8711 | |
8712 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
8713 | write out an actual text relocation; we may not, because | |
8714 | at this point we do not know whether e.g. any .eh_frame | |
8715 | absolute relocations have been converted to PC-relative. */ | |
8716 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
8717 | } |
8718 | ||
8719 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 8720 | return FALSE; |
b49e97c9 | 8721 | |
861fb55a | 8722 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 8723 | if (htab->is_vxworks) |
b49e97c9 | 8724 | { |
0a44bf69 RS |
8725 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
8726 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 8727 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
8728 | { |
8729 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
8730 | return FALSE; | |
b49e97c9 | 8731 | |
0a44bf69 RS |
8732 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
8733 | return FALSE; | |
b49e97c9 | 8734 | |
0a44bf69 RS |
8735 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
8736 | return FALSE; | |
8737 | } | |
b49e97c9 | 8738 | } |
0a44bf69 RS |
8739 | else |
8740 | { | |
861fb55a | 8741 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
8742 | { |
8743 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
8744 | return FALSE; | |
b49e97c9 | 8745 | |
0a44bf69 RS |
8746 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
8747 | return FALSE; | |
b49e97c9 | 8748 | |
0a44bf69 RS |
8749 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
8750 | return FALSE; | |
8751 | } | |
b49e97c9 | 8752 | |
0a44bf69 RS |
8753 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
8754 | return FALSE; | |
b49e97c9 | 8755 | |
0a44bf69 RS |
8756 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
8757 | return FALSE; | |
b49e97c9 | 8758 | |
0a44bf69 RS |
8759 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
8760 | return FALSE; | |
b49e97c9 | 8761 | |
0a44bf69 RS |
8762 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
8763 | return FALSE; | |
b49e97c9 | 8764 | |
0a44bf69 RS |
8765 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
8766 | return FALSE; | |
b49e97c9 | 8767 | |
0a44bf69 RS |
8768 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
8769 | return FALSE; | |
b49e97c9 | 8770 | |
0a44bf69 RS |
8771 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
8772 | return FALSE; | |
8773 | ||
8774 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
8775 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
8776 | return FALSE; | |
8777 | ||
8778 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
8779 | && (bfd_get_section_by_name | |
8780 | (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) | |
8781 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) | |
8782 | return FALSE; | |
8783 | } | |
861fb55a DJ |
8784 | if (htab->splt->size > 0) |
8785 | { | |
8786 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
8787 | return FALSE; | |
8788 | ||
8789 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
8790 | return FALSE; | |
8791 | ||
8792 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
8793 | return FALSE; | |
8794 | ||
8795 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
8796 | return FALSE; | |
8797 | } | |
7a2b07ff NS |
8798 | if (htab->is_vxworks |
8799 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
8800 | return FALSE; | |
b49e97c9 TS |
8801 | } |
8802 | ||
b34976b6 | 8803 | return TRUE; |
b49e97c9 TS |
8804 | } |
8805 | \f | |
81d43bff RS |
8806 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
8807 | Adjust its R_ADDEND field so that it is correct for the output file. | |
8808 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
8809 | and sections respectively; both use symbol indexes. */ | |
8810 | ||
8811 | static void | |
8812 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
8813 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
8814 | asection **local_sections, Elf_Internal_Rela *rel) | |
8815 | { | |
8816 | unsigned int r_type, r_symndx; | |
8817 | Elf_Internal_Sym *sym; | |
8818 | asection *sec; | |
8819 | ||
8820 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) | |
8821 | { | |
8822 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
8823 | if (r_type == R_MIPS16_GPREL | |
8824 | || r_type == R_MIPS_GPREL16 | |
8825 | || r_type == R_MIPS_GPREL32 | |
8826 | || r_type == R_MIPS_LITERAL) | |
8827 | { | |
8828 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
8829 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
8830 | } | |
8831 | ||
8832 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
8833 | sym = local_syms + r_symndx; | |
8834 | ||
8835 | /* Adjust REL's addend to account for section merging. */ | |
8836 | if (!info->relocatable) | |
8837 | { | |
8838 | sec = local_sections[r_symndx]; | |
8839 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
8840 | } | |
8841 | ||
8842 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
8843 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8844 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
8845 | } | |
8846 | } | |
8847 | ||
b49e97c9 TS |
8848 | /* Relocate a MIPS ELF section. */ |
8849 | ||
b34976b6 | 8850 | bfd_boolean |
9719ad41 RS |
8851 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
8852 | bfd *input_bfd, asection *input_section, | |
8853 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
8854 | Elf_Internal_Sym *local_syms, | |
8855 | asection **local_sections) | |
b49e97c9 TS |
8856 | { |
8857 | Elf_Internal_Rela *rel; | |
8858 | const Elf_Internal_Rela *relend; | |
8859 | bfd_vma addend = 0; | |
b34976b6 | 8860 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 8861 | const struct elf_backend_data *bed; |
b49e97c9 TS |
8862 | |
8863 | bed = get_elf_backend_data (output_bfd); | |
8864 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
8865 | for (rel = relocs; rel < relend; ++rel) | |
8866 | { | |
8867 | const char *name; | |
c9adbffe | 8868 | bfd_vma value = 0; |
b49e97c9 | 8869 | reloc_howto_type *howto; |
b34976b6 AM |
8870 | bfd_boolean require_jalx; |
8871 | /* TRUE if the relocation is a RELA relocation, rather than a | |
b49e97c9 | 8872 | REL relocation. */ |
b34976b6 | 8873 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 8874 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 8875 | const char *msg; |
ab96bf03 AM |
8876 | unsigned long r_symndx; |
8877 | asection *sec; | |
749b8d9d L |
8878 | Elf_Internal_Shdr *symtab_hdr; |
8879 | struct elf_link_hash_entry *h; | |
b49e97c9 TS |
8880 | |
8881 | /* Find the relocation howto for this relocation. */ | |
ab96bf03 AM |
8882 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, |
8883 | NEWABI_P (input_bfd) | |
8884 | && (MIPS_RELOC_RELA_P | |
8885 | (input_bfd, input_section, | |
8886 | rel - relocs))); | |
8887 | ||
8888 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 8889 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
ab96bf03 | 8890 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) |
749b8d9d L |
8891 | { |
8892 | sec = local_sections[r_symndx]; | |
8893 | h = NULL; | |
8894 | } | |
ab96bf03 AM |
8895 | else |
8896 | { | |
ab96bf03 | 8897 | unsigned long extsymoff; |
ab96bf03 | 8898 | |
ab96bf03 AM |
8899 | extsymoff = 0; |
8900 | if (!elf_bad_symtab (input_bfd)) | |
8901 | extsymoff = symtab_hdr->sh_info; | |
8902 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
8903 | while (h->root.type == bfd_link_hash_indirect | |
8904 | || h->root.type == bfd_link_hash_warning) | |
8905 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8906 | ||
8907 | sec = NULL; | |
8908 | if (h->root.type == bfd_link_hash_defined | |
8909 | || h->root.type == bfd_link_hash_defweak) | |
8910 | sec = h->root.u.def.section; | |
8911 | } | |
8912 | ||
8913 | if (sec != NULL && elf_discarded_section (sec)) | |
8914 | { | |
8915 | /* For relocs against symbols from removed linkonce sections, | |
8916 | or sections discarded by a linker script, we just want the | |
8917 | section contents zeroed. Avoid any special processing. */ | |
8918 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
8919 | rel->r_info = 0; | |
8920 | rel->r_addend = 0; | |
8921 | continue; | |
8922 | } | |
8923 | ||
4a14403c | 8924 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
8925 | { |
8926 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
8927 | 64-bit code, but make sure all their addresses are in the | |
8928 | lowermost or uppermost 32-bit section of the 64-bit address | |
8929 | space. Thus, when they use an R_MIPS_64 they mean what is | |
8930 | usually meant by R_MIPS_32, with the exception that the | |
8931 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 8932 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
8933 | |
8934 | /* On big-endian systems, we need to lie about the position | |
8935 | of the reloc. */ | |
8936 | if (bfd_big_endian (input_bfd)) | |
8937 | rel->r_offset += 4; | |
8938 | } | |
b49e97c9 TS |
8939 | |
8940 | if (!use_saved_addend_p) | |
8941 | { | |
b49e97c9 TS |
8942 | /* If these relocations were originally of the REL variety, |
8943 | we must pull the addend out of the field that will be | |
8944 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
8945 | RELA relocation. */ |
8946 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
8947 | relocs, rel)) | |
b49e97c9 | 8948 | { |
b34976b6 | 8949 | rela_relocation_p = FALSE; |
c224138d RS |
8950 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
8951 | howto, contents); | |
738e5348 RS |
8952 | if (hi16_reloc_p (r_type) |
8953 | || (got16_reloc_p (r_type) | |
b49e97c9 | 8954 | && mips_elf_local_relocation_p (input_bfd, rel, |
b34976b6 | 8955 | local_sections, FALSE))) |
b49e97c9 | 8956 | { |
c224138d RS |
8957 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
8958 | contents, &addend)) | |
749b8d9d L |
8959 | { |
8960 | const char *name; | |
8961 | ||
8962 | if (h) | |
8963 | name = h->root.root.string; | |
8964 | else | |
8965 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
8966 | local_syms + r_symndx, | |
8967 | sec); | |
8968 | (*_bfd_error_handler) | |
8969 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
8970 | input_bfd, input_section, name, howto->name, | |
8971 | rel->r_offset); | |
749b8d9d | 8972 | } |
b49e97c9 | 8973 | } |
30ac9238 RS |
8974 | else |
8975 | addend <<= howto->rightshift; | |
b49e97c9 TS |
8976 | } |
8977 | else | |
8978 | addend = rel->r_addend; | |
81d43bff RS |
8979 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
8980 | local_syms, local_sections, rel); | |
b49e97c9 TS |
8981 | } |
8982 | ||
1049f94e | 8983 | if (info->relocatable) |
b49e97c9 | 8984 | { |
4a14403c | 8985 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
8986 | && bfd_big_endian (input_bfd)) |
8987 | rel->r_offset -= 4; | |
8988 | ||
81d43bff | 8989 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 8990 | { |
81d43bff | 8991 | addend += rel->r_addend; |
738e5348 | 8992 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
8993 | addend = mips_elf_high (addend); |
8994 | else if (r_type == R_MIPS_HIGHER) | |
8995 | addend = mips_elf_higher (addend); | |
8996 | else if (r_type == R_MIPS_HIGHEST) | |
8997 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
8998 | else |
8999 | addend >>= howto->rightshift; | |
b49e97c9 | 9000 | |
30ac9238 RS |
9001 | /* We use the source mask, rather than the destination |
9002 | mask because the place to which we are writing will be | |
9003 | source of the addend in the final link. */ | |
b49e97c9 TS |
9004 | addend &= howto->src_mask; |
9005 | ||
5a659663 | 9006 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9007 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9008 | ABI. Here, we need to update the addend. It would be | |
9009 | possible to get away with just using the R_MIPS_32 reloc | |
9010 | but for endianness. */ | |
9011 | { | |
9012 | bfd_vma sign_bits; | |
9013 | bfd_vma low_bits; | |
9014 | bfd_vma high_bits; | |
9015 | ||
9016 | if (addend & ((bfd_vma) 1 << 31)) | |
9017 | #ifdef BFD64 | |
9018 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9019 | #else | |
9020 | sign_bits = -1; | |
9021 | #endif | |
9022 | else | |
9023 | sign_bits = 0; | |
9024 | ||
9025 | /* If we don't know that we have a 64-bit type, | |
9026 | do two separate stores. */ | |
9027 | if (bfd_big_endian (input_bfd)) | |
9028 | { | |
9029 | /* Store the sign-bits (which are most significant) | |
9030 | first. */ | |
9031 | low_bits = sign_bits; | |
9032 | high_bits = addend; | |
9033 | } | |
9034 | else | |
9035 | { | |
9036 | low_bits = addend; | |
9037 | high_bits = sign_bits; | |
9038 | } | |
9039 | bfd_put_32 (input_bfd, low_bits, | |
9040 | contents + rel->r_offset); | |
9041 | bfd_put_32 (input_bfd, high_bits, | |
9042 | contents + rel->r_offset + 4); | |
9043 | continue; | |
9044 | } | |
9045 | ||
9046 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
9047 | input_bfd, input_section, | |
b34976b6 AM |
9048 | contents, FALSE)) |
9049 | return FALSE; | |
b49e97c9 TS |
9050 | } |
9051 | ||
9052 | /* Go on to the next relocation. */ | |
9053 | continue; | |
9054 | } | |
9055 | ||
9056 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
9057 | relocations for the same offset. In that case we are | |
9058 | supposed to treat the output of each relocation as the addend | |
9059 | for the next. */ | |
9060 | if (rel + 1 < relend | |
9061 | && rel->r_offset == rel[1].r_offset | |
9062 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 9063 | use_saved_addend_p = TRUE; |
b49e97c9 | 9064 | else |
b34976b6 | 9065 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
9066 | |
9067 | /* Figure out what value we are supposed to relocate. */ | |
9068 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
9069 | input_section, info, rel, | |
9070 | addend, howto, local_syms, | |
9071 | local_sections, &value, | |
bce03d3d AO |
9072 | &name, &require_jalx, |
9073 | use_saved_addend_p)) | |
b49e97c9 TS |
9074 | { |
9075 | case bfd_reloc_continue: | |
9076 | /* There's nothing to do. */ | |
9077 | continue; | |
9078 | ||
9079 | case bfd_reloc_undefined: | |
9080 | /* mips_elf_calculate_relocation already called the | |
9081 | undefined_symbol callback. There's no real point in | |
9082 | trying to perform the relocation at this point, so we | |
9083 | just skip ahead to the next relocation. */ | |
9084 | continue; | |
9085 | ||
9086 | case bfd_reloc_notsupported: | |
9087 | msg = _("internal error: unsupported relocation error"); | |
9088 | info->callbacks->warning | |
9089 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 9090 | return FALSE; |
b49e97c9 TS |
9091 | |
9092 | case bfd_reloc_overflow: | |
9093 | if (use_saved_addend_p) | |
9094 | /* Ignore overflow until we reach the last relocation for | |
9095 | a given location. */ | |
9096 | ; | |
9097 | else | |
9098 | { | |
0e53d9da AN |
9099 | struct mips_elf_link_hash_table *htab; |
9100 | ||
9101 | htab = mips_elf_hash_table (info); | |
b49e97c9 | 9102 | BFD_ASSERT (name != NULL); |
0e53d9da AN |
9103 | if (!htab->small_data_overflow_reported |
9104 | && (howto->type == R_MIPS_GPREL16 | |
9105 | || howto->type == R_MIPS_LITERAL)) | |
9106 | { | |
9107 | const char *msg = | |
9108 | _("small-data section exceeds 64KB;" | |
9109 | " lower small-data size limit (see option -G)"); | |
9110 | ||
9111 | htab->small_data_overflow_reported = TRUE; | |
9112 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
9113 | } | |
b49e97c9 | 9114 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 9115 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 9116 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9117 | return FALSE; |
b49e97c9 TS |
9118 | } |
9119 | break; | |
9120 | ||
9121 | case bfd_reloc_ok: | |
9122 | break; | |
9123 | ||
9124 | default: | |
9125 | abort (); | |
9126 | break; | |
9127 | } | |
9128 | ||
9129 | /* If we've got another relocation for the address, keep going | |
9130 | until we reach the last one. */ | |
9131 | if (use_saved_addend_p) | |
9132 | { | |
9133 | addend = value; | |
9134 | continue; | |
9135 | } | |
9136 | ||
4a14403c | 9137 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9138 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9139 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
9140 | that calculated the right value. Now, however, we | |
9141 | sign-extend the 32-bit result to 64-bits, and store it as a | |
9142 | 64-bit value. We are especially generous here in that we | |
9143 | go to extreme lengths to support this usage on systems with | |
9144 | only a 32-bit VMA. */ | |
9145 | { | |
9146 | bfd_vma sign_bits; | |
9147 | bfd_vma low_bits; | |
9148 | bfd_vma high_bits; | |
9149 | ||
9150 | if (value & ((bfd_vma) 1 << 31)) | |
9151 | #ifdef BFD64 | |
9152 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9153 | #else | |
9154 | sign_bits = -1; | |
9155 | #endif | |
9156 | else | |
9157 | sign_bits = 0; | |
9158 | ||
9159 | /* If we don't know that we have a 64-bit type, | |
9160 | do two separate stores. */ | |
9161 | if (bfd_big_endian (input_bfd)) | |
9162 | { | |
9163 | /* Undo what we did above. */ | |
9164 | rel->r_offset -= 4; | |
9165 | /* Store the sign-bits (which are most significant) | |
9166 | first. */ | |
9167 | low_bits = sign_bits; | |
9168 | high_bits = value; | |
9169 | } | |
9170 | else | |
9171 | { | |
9172 | low_bits = value; | |
9173 | high_bits = sign_bits; | |
9174 | } | |
9175 | bfd_put_32 (input_bfd, low_bits, | |
9176 | contents + rel->r_offset); | |
9177 | bfd_put_32 (input_bfd, high_bits, | |
9178 | contents + rel->r_offset + 4); | |
9179 | continue; | |
9180 | } | |
9181 | ||
9182 | /* Actually perform the relocation. */ | |
9183 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
9184 | input_bfd, input_section, | |
9185 | contents, require_jalx)) | |
b34976b6 | 9186 | return FALSE; |
b49e97c9 TS |
9187 | } |
9188 | ||
b34976b6 | 9189 | return TRUE; |
b49e97c9 TS |
9190 | } |
9191 | \f | |
861fb55a DJ |
9192 | /* A function that iterates over each entry in la25_stubs and fills |
9193 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
9194 | ||
9195 | static int | |
9196 | mips_elf_create_la25_stub (void **slot, void *data) | |
9197 | { | |
9198 | struct mips_htab_traverse_info *hti; | |
9199 | struct mips_elf_link_hash_table *htab; | |
9200 | struct mips_elf_la25_stub *stub; | |
9201 | asection *s; | |
9202 | bfd_byte *loc; | |
9203 | bfd_vma offset, target, target_high, target_low; | |
9204 | ||
9205 | stub = (struct mips_elf_la25_stub *) *slot; | |
9206 | hti = (struct mips_htab_traverse_info *) data; | |
9207 | htab = mips_elf_hash_table (hti->info); | |
9208 | ||
9209 | /* Create the section contents, if we haven't already. */ | |
9210 | s = stub->stub_section; | |
9211 | loc = s->contents; | |
9212 | if (loc == NULL) | |
9213 | { | |
9214 | loc = bfd_malloc (s->size); | |
9215 | if (loc == NULL) | |
9216 | { | |
9217 | hti->error = TRUE; | |
9218 | return FALSE; | |
9219 | } | |
9220 | s->contents = loc; | |
9221 | } | |
9222 | ||
9223 | /* Work out where in the section this stub should go. */ | |
9224 | offset = stub->offset; | |
9225 | ||
9226 | /* Work out the target address. */ | |
9227 | target = (stub->h->root.root.u.def.section->output_section->vma | |
9228 | + stub->h->root.root.u.def.section->output_offset | |
9229 | + stub->h->root.root.u.def.value); | |
9230 | target_high = ((target + 0x8000) >> 16) & 0xffff; | |
9231 | target_low = (target & 0xffff); | |
9232 | ||
9233 | if (stub->stub_section != htab->strampoline) | |
9234 | { | |
9235 | /* This is a simple LUI/ADIDU stub. Zero out the beginning | |
9236 | of the section and write the two instructions at the end. */ | |
9237 | memset (loc, 0, offset); | |
9238 | loc += offset; | |
9239 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9240 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
9241 | } | |
9242 | else | |
9243 | { | |
9244 | /* This is trampoline. */ | |
9245 | loc += offset; | |
9246 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9247 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
9248 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
9249 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
9250 | } | |
9251 | return TRUE; | |
9252 | } | |
9253 | ||
b49e97c9 TS |
9254 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9255 | adjust it appropriately now. */ | |
9256 | ||
9257 | static void | |
9719ad41 RS |
9258 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
9259 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9260 | { |
9261 | /* The linker script takes care of providing names and values for | |
9262 | these, but we must place them into the right sections. */ | |
9263 | static const char* const text_section_symbols[] = { | |
9264 | "_ftext", | |
9265 | "_etext", | |
9266 | "__dso_displacement", | |
9267 | "__elf_header", | |
9268 | "__program_header_table", | |
9269 | NULL | |
9270 | }; | |
9271 | ||
9272 | static const char* const data_section_symbols[] = { | |
9273 | "_fdata", | |
9274 | "_edata", | |
9275 | "_end", | |
9276 | "_fbss", | |
9277 | NULL | |
9278 | }; | |
9279 | ||
9280 | const char* const *p; | |
9281 | int i; | |
9282 | ||
9283 | for (i = 0; i < 2; ++i) | |
9284 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
9285 | *p; | |
9286 | ++p) | |
9287 | if (strcmp (*p, name) == 0) | |
9288 | { | |
9289 | /* All of these symbols are given type STT_SECTION by the | |
9290 | IRIX6 linker. */ | |
9291 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 9292 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
9293 | |
9294 | /* The IRIX linker puts these symbols in special sections. */ | |
9295 | if (i == 0) | |
9296 | sym->st_shndx = SHN_MIPS_TEXT; | |
9297 | else | |
9298 | sym->st_shndx = SHN_MIPS_DATA; | |
9299 | ||
9300 | break; | |
9301 | } | |
9302 | } | |
9303 | ||
9304 | /* Finish up dynamic symbol handling. We set the contents of various | |
9305 | dynamic sections here. */ | |
9306 | ||
b34976b6 | 9307 | bfd_boolean |
9719ad41 RS |
9308 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
9309 | struct bfd_link_info *info, | |
9310 | struct elf_link_hash_entry *h, | |
9311 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9312 | { |
9313 | bfd *dynobj; | |
b49e97c9 | 9314 | asection *sgot; |
f4416af6 | 9315 | struct mips_got_info *g, *gg; |
b49e97c9 | 9316 | const char *name; |
3d6746ca | 9317 | int idx; |
5108fc1b | 9318 | struct mips_elf_link_hash_table *htab; |
738e5348 | 9319 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 9320 | |
5108fc1b | 9321 | htab = mips_elf_hash_table (info); |
b49e97c9 | 9322 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 9323 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9324 | |
861fb55a DJ |
9325 | BFD_ASSERT (!htab->is_vxworks); |
9326 | ||
9327 | if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub) | |
9328 | { | |
9329 | /* We've decided to create a PLT entry for this symbol. */ | |
9330 | bfd_byte *loc; | |
9331 | bfd_vma header_address, plt_index, got_address; | |
9332 | bfd_vma got_address_high, got_address_low, load; | |
9333 | const bfd_vma *plt_entry; | |
9334 | ||
9335 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9336 | BFD_ASSERT (h->dynindx != -1); | |
9337 | BFD_ASSERT (htab->splt != NULL); | |
9338 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9339 | BFD_ASSERT (!h->def_regular); | |
9340 | ||
9341 | /* Calculate the address of the PLT header. */ | |
9342 | header_address = (htab->splt->output_section->vma | |
9343 | + htab->splt->output_offset); | |
9344 | ||
9345 | /* Calculate the index of the entry. */ | |
9346 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9347 | / htab->plt_entry_size); | |
9348 | ||
9349 | /* Calculate the address of the .got.plt entry. */ | |
9350 | got_address = (htab->sgotplt->output_section->vma | |
9351 | + htab->sgotplt->output_offset | |
9352 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9353 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9354 | got_address_low = got_address & 0xffff; | |
9355 | ||
9356 | /* Initially point the .got.plt entry at the PLT header. */ | |
9357 | loc = (htab->sgotplt->contents | |
9358 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9359 | if (ABI_64_P (output_bfd)) | |
9360 | bfd_put_64 (output_bfd, header_address, loc); | |
9361 | else | |
9362 | bfd_put_32 (output_bfd, header_address, loc); | |
9363 | ||
9364 | /* Find out where the .plt entry should go. */ | |
9365 | loc = htab->splt->contents + h->plt.offset; | |
9366 | ||
9367 | /* Pick the load opcode. */ | |
9368 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
9369 | ||
9370 | /* Fill in the PLT entry itself. */ | |
9371 | plt_entry = mips_exec_plt_entry; | |
9372 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); | |
9373 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4); | |
6d30f5b2 NC |
9374 | |
9375 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
9376 | { | |
9377 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
9378 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9379 | } | |
9380 | else | |
9381 | { | |
9382 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
9383 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12); | |
9384 | } | |
861fb55a DJ |
9385 | |
9386 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9387 | mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt, | |
9388 | plt_index, h->dynindx, | |
9389 | R_MIPS_JUMP_SLOT, got_address); | |
9390 | ||
9391 | /* We distinguish between PLT entries and lazy-binding stubs by | |
9392 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
9393 | flag and leave the value if there are any relocations in the | |
9394 | binary where pointer equality matters. */ | |
9395 | sym->st_shndx = SHN_UNDEF; | |
9396 | if (h->pointer_equality_needed) | |
9397 | sym->st_other = STO_MIPS_PLT; | |
9398 | else | |
9399 | sym->st_value = 0; | |
9400 | } | |
9401 | else if (h->plt.offset != MINUS_ONE) | |
b49e97c9 | 9402 | { |
861fb55a | 9403 | /* We've decided to create a lazy-binding stub. */ |
5108fc1b | 9404 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
9405 | |
9406 | /* This symbol has a stub. Set it up. */ | |
9407 | ||
9408 | BFD_ASSERT (h->dynindx != -1); | |
9409 | ||
5108fc1b RS |
9410 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9411 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
9412 | |
9413 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
9414 | sign extension at runtime in the stub, resulting in a negative |
9415 | index value. */ | |
9416 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 9417 | return FALSE; |
b49e97c9 TS |
9418 | |
9419 | /* Fill the stub. */ | |
3d6746ca DD |
9420 | idx = 0; |
9421 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
9422 | idx += 4; | |
9423 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
9424 | idx += 4; | |
5108fc1b | 9425 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 9426 | { |
5108fc1b | 9427 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
9428 | stub + idx); |
9429 | idx += 4; | |
9430 | } | |
9431 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
9432 | idx += 4; | |
b49e97c9 | 9433 | |
3d6746ca DD |
9434 | /* If a large stub is not required and sign extension is not a |
9435 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
9436 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9437 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
9438 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
9439 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
9440 | else | |
5108fc1b RS |
9441 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
9442 | stub + idx); | |
9443 | ||
4e41d0d7 RS |
9444 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
9445 | memcpy (htab->sstubs->contents + h->plt.offset, | |
9446 | stub, htab->function_stub_size); | |
b49e97c9 TS |
9447 | |
9448 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
9449 | only for the referenced symbol. */ | |
9450 | sym->st_shndx = SHN_UNDEF; | |
9451 | ||
9452 | /* The run-time linker uses the st_value field of the symbol | |
9453 | to reset the global offset table entry for this external | |
9454 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
9455 | sym->st_value = (htab->sstubs->output_section->vma |
9456 | + htab->sstubs->output_offset | |
c5ae1840 | 9457 | + h->plt.offset); |
b49e97c9 TS |
9458 | } |
9459 | ||
738e5348 RS |
9460 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
9461 | refer to the stub, since only the stub uses the standard calling | |
9462 | conventions. */ | |
9463 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
9464 | { | |
9465 | BFD_ASSERT (hmips->need_fn_stub); | |
9466 | sym->st_value = (hmips->fn_stub->output_section->vma | |
9467 | + hmips->fn_stub->output_offset); | |
9468 | sym->st_size = hmips->fn_stub->size; | |
9469 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
9470 | } | |
9471 | ||
b49e97c9 | 9472 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 9473 | || h->forced_local); |
b49e97c9 | 9474 | |
23cc69b6 | 9475 | sgot = htab->sgot; |
a8028dd0 | 9476 | g = htab->got_info; |
b49e97c9 TS |
9477 | BFD_ASSERT (g != NULL); |
9478 | ||
9479 | /* Run through the global symbol table, creating GOT entries for all | |
9480 | the symbols that need them. */ | |
9481 | if (g->global_gotsym != NULL | |
9482 | && h->dynindx >= g->global_gotsym->dynindx) | |
9483 | { | |
9484 | bfd_vma offset; | |
9485 | bfd_vma value; | |
9486 | ||
6eaa6adc | 9487 | value = sym->st_value; |
738e5348 RS |
9488 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, |
9489 | R_MIPS_GOT16, info); | |
b49e97c9 TS |
9490 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
9491 | } | |
9492 | ||
0f20cc35 | 9493 | if (g->next && h->dynindx != -1 && h->type != STT_TLS) |
f4416af6 AO |
9494 | { |
9495 | struct mips_got_entry e, *p; | |
0626d451 | 9496 | bfd_vma entry; |
f4416af6 | 9497 | bfd_vma offset; |
f4416af6 AO |
9498 | |
9499 | gg = g; | |
9500 | ||
9501 | e.abfd = output_bfd; | |
9502 | e.symndx = -1; | |
738e5348 | 9503 | e.d.h = hmips; |
0f20cc35 | 9504 | e.tls_type = 0; |
143d77c5 | 9505 | |
f4416af6 AO |
9506 | for (g = g->next; g->next != gg; g = g->next) |
9507 | { | |
9508 | if (g->got_entries | |
9509 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
9510 | &e))) | |
9511 | { | |
9512 | offset = p->gotidx; | |
0626d451 RS |
9513 | if (info->shared |
9514 | || (elf_hash_table (info)->dynamic_sections_created | |
9515 | && p->d.h != NULL | |
f5385ebf AM |
9516 | && p->d.h->root.def_dynamic |
9517 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
9518 | { |
9519 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
9520 | the various compatibility problems, it's easier to mock | |
9521 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
9522 | mips_elf_create_dynamic_relocation to calculate the | |
9523 | appropriate addend. */ | |
9524 | Elf_Internal_Rela rel[3]; | |
9525 | ||
9526 | memset (rel, 0, sizeof (rel)); | |
9527 | if (ABI_64_P (output_bfd)) | |
9528 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
9529 | else | |
9530 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
9531 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
9532 | ||
9533 | entry = 0; | |
9534 | if (! (mips_elf_create_dynamic_relocation | |
9535 | (output_bfd, info, rel, | |
9536 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
9537 | return FALSE; | |
9538 | } | |
9539 | else | |
9540 | entry = sym->st_value; | |
9541 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
9542 | } |
9543 | } | |
9544 | } | |
9545 | ||
b49e97c9 TS |
9546 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
9547 | name = h->root.root.string; | |
9548 | if (strcmp (name, "_DYNAMIC") == 0 | |
22edb2f1 | 9549 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
9550 | sym->st_shndx = SHN_ABS; |
9551 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
9552 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
9553 | { | |
9554 | sym->st_shndx = SHN_ABS; | |
9555 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9556 | sym->st_value = 1; | |
9557 | } | |
4a14403c | 9558 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9559 | { |
9560 | sym->st_shndx = SHN_ABS; | |
9561 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9562 | sym->st_value = elf_gp (output_bfd); | |
9563 | } | |
9564 | else if (SGI_COMPAT (output_bfd)) | |
9565 | { | |
9566 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
9567 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
9568 | { | |
9569 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9570 | sym->st_other = STO_PROTECTED; | |
9571 | sym->st_value = 0; | |
9572 | sym->st_shndx = SHN_MIPS_DATA; | |
9573 | } | |
9574 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
9575 | { | |
9576 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9577 | sym->st_other = STO_PROTECTED; | |
9578 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
9579 | sym->st_shndx = SHN_ABS; | |
9580 | } | |
9581 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
9582 | { | |
9583 | if (h->type == STT_FUNC) | |
9584 | sym->st_shndx = SHN_MIPS_TEXT; | |
9585 | else if (h->type == STT_OBJECT) | |
9586 | sym->st_shndx = SHN_MIPS_DATA; | |
9587 | } | |
9588 | } | |
9589 | ||
861fb55a DJ |
9590 | /* Emit a copy reloc, if needed. */ |
9591 | if (h->needs_copy) | |
9592 | { | |
9593 | asection *s; | |
9594 | bfd_vma symval; | |
9595 | ||
9596 | BFD_ASSERT (h->dynindx != -1); | |
9597 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9598 | ||
9599 | s = mips_elf_rel_dyn_section (info, FALSE); | |
9600 | symval = (h->root.u.def.section->output_section->vma | |
9601 | + h->root.u.def.section->output_offset | |
9602 | + h->root.u.def.value); | |
9603 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
9604 | h->dynindx, R_MIPS_COPY, symval); | |
9605 | } | |
9606 | ||
b49e97c9 TS |
9607 | /* Handle the IRIX6-specific symbols. */ |
9608 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
9609 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
9610 | ||
9611 | if (! info->shared) | |
9612 | { | |
9613 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
9614 | && (strcmp (name, "__rld_map") == 0 | |
9615 | || strcmp (name, "__RLD_MAP") == 0)) | |
9616 | { | |
9617 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
9618 | BFD_ASSERT (s != NULL); | |
9619 | sym->st_value = s->output_section->vma + s->output_offset; | |
9719ad41 | 9620 | bfd_put_32 (output_bfd, 0, s->contents); |
b49e97c9 TS |
9621 | if (mips_elf_hash_table (info)->rld_value == 0) |
9622 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
9623 | } | |
9624 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
9625 | && strcmp (name, "__rld_obj_head") == 0) | |
9626 | { | |
9627 | /* IRIX6 does not use a .rld_map section. */ | |
9628 | if (IRIX_COMPAT (output_bfd) == ict_irix5 | |
9629 | || IRIX_COMPAT (output_bfd) == ict_none) | |
9630 | BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map") | |
9631 | != NULL); | |
9632 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
9633 | } | |
9634 | } | |
9635 | ||
738e5348 RS |
9636 | /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to |
9637 | treat MIPS16 symbols like any other. */ | |
30c09090 | 9638 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
9639 | { |
9640 | BFD_ASSERT (sym->st_value & 1); | |
9641 | sym->st_other -= STO_MIPS16; | |
9642 | } | |
b49e97c9 | 9643 | |
b34976b6 | 9644 | return TRUE; |
b49e97c9 TS |
9645 | } |
9646 | ||
0a44bf69 RS |
9647 | /* Likewise, for VxWorks. */ |
9648 | ||
9649 | bfd_boolean | |
9650 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
9651 | struct bfd_link_info *info, | |
9652 | struct elf_link_hash_entry *h, | |
9653 | Elf_Internal_Sym *sym) | |
9654 | { | |
9655 | bfd *dynobj; | |
9656 | asection *sgot; | |
9657 | struct mips_got_info *g; | |
9658 | struct mips_elf_link_hash_table *htab; | |
9659 | ||
9660 | htab = mips_elf_hash_table (info); | |
9661 | dynobj = elf_hash_table (info)->dynobj; | |
9662 | ||
9663 | if (h->plt.offset != (bfd_vma) -1) | |
9664 | { | |
6d79d2ed | 9665 | bfd_byte *loc; |
0a44bf69 RS |
9666 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
9667 | Elf_Internal_Rela rel; | |
9668 | static const bfd_vma *plt_entry; | |
9669 | ||
9670 | BFD_ASSERT (h->dynindx != -1); | |
9671 | BFD_ASSERT (htab->splt != NULL); | |
9672 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9673 | ||
9674 | /* Calculate the address of the .plt entry. */ | |
9675 | plt_address = (htab->splt->output_section->vma | |
9676 | + htab->splt->output_offset | |
9677 | + h->plt.offset); | |
9678 | ||
9679 | /* Calculate the index of the entry. */ | |
9680 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9681 | / htab->plt_entry_size); | |
9682 | ||
9683 | /* Calculate the address of the .got.plt entry. */ | |
9684 | got_address = (htab->sgotplt->output_section->vma | |
9685 | + htab->sgotplt->output_offset | |
9686 | + plt_index * 4); | |
9687 | ||
9688 | /* Calculate the offset of the .got.plt entry from | |
9689 | _GLOBAL_OFFSET_TABLE_. */ | |
9690 | got_offset = mips_elf_gotplt_index (info, h); | |
9691 | ||
9692 | /* Calculate the offset for the branch at the start of the PLT | |
9693 | entry. The branch jumps to the beginning of .plt. */ | |
9694 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
9695 | ||
9696 | /* Fill in the initial value of the .got.plt entry. */ | |
9697 | bfd_put_32 (output_bfd, plt_address, | |
9698 | htab->sgotplt->contents + plt_index * 4); | |
9699 | ||
9700 | /* Find out where the .plt entry should go. */ | |
9701 | loc = htab->splt->contents + h->plt.offset; | |
9702 | ||
9703 | if (info->shared) | |
9704 | { | |
9705 | plt_entry = mips_vxworks_shared_plt_entry; | |
9706 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9707 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9708 | } | |
9709 | else | |
9710 | { | |
9711 | bfd_vma got_address_high, got_address_low; | |
9712 | ||
9713 | plt_entry = mips_vxworks_exec_plt_entry; | |
9714 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9715 | got_address_low = got_address & 0xffff; | |
9716 | ||
9717 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9718 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9719 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
9720 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
9721 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9722 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9723 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
9724 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
9725 | ||
9726 | loc = (htab->srelplt2->contents | |
9727 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
9728 | ||
9729 | /* Emit a relocation for the .got.plt entry. */ | |
9730 | rel.r_offset = got_address; | |
9731 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
9732 | rel.r_addend = h->plt.offset; | |
9733 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9734 | ||
9735 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
9736 | loc += sizeof (Elf32_External_Rela); | |
9737 | rel.r_offset = plt_address + 8; | |
9738 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9739 | rel.r_addend = got_offset; | |
9740 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9741 | ||
9742 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
9743 | loc += sizeof (Elf32_External_Rela); | |
9744 | rel.r_offset += 4; | |
9745 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9746 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9747 | } | |
9748 | ||
9749 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9750 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
9751 | rel.r_offset = got_address; | |
9752 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
9753 | rel.r_addend = 0; | |
9754 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9755 | ||
9756 | if (!h->def_regular) | |
9757 | sym->st_shndx = SHN_UNDEF; | |
9758 | } | |
9759 | ||
9760 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
9761 | ||
23cc69b6 | 9762 | sgot = htab->sgot; |
a8028dd0 | 9763 | g = htab->got_info; |
0a44bf69 RS |
9764 | BFD_ASSERT (g != NULL); |
9765 | ||
9766 | /* See if this symbol has an entry in the GOT. */ | |
9767 | if (g->global_gotsym != NULL | |
9768 | && h->dynindx >= g->global_gotsym->dynindx) | |
9769 | { | |
9770 | bfd_vma offset; | |
9771 | Elf_Internal_Rela outrel; | |
9772 | bfd_byte *loc; | |
9773 | asection *s; | |
9774 | ||
9775 | /* Install the symbol value in the GOT. */ | |
9776 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, | |
9777 | R_MIPS_GOT16, info); | |
9778 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); | |
9779 | ||
9780 | /* Add a dynamic relocation for it. */ | |
9781 | s = mips_elf_rel_dyn_section (info, FALSE); | |
9782 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
9783 | outrel.r_offset = (sgot->output_section->vma | |
9784 | + sgot->output_offset | |
9785 | + offset); | |
9786 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
9787 | outrel.r_addend = 0; | |
9788 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
9789 | } | |
9790 | ||
9791 | /* Emit a copy reloc, if needed. */ | |
9792 | if (h->needs_copy) | |
9793 | { | |
9794 | Elf_Internal_Rela rel; | |
9795 | ||
9796 | BFD_ASSERT (h->dynindx != -1); | |
9797 | ||
9798 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
9799 | + h->root.u.def.section->output_offset | |
9800 | + h->root.u.def.value); | |
9801 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
9802 | rel.r_addend = 0; | |
9803 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
9804 | htab->srelbss->contents | |
9805 | + (htab->srelbss->reloc_count | |
9806 | * sizeof (Elf32_External_Rela))); | |
9807 | ++htab->srelbss->reloc_count; | |
9808 | } | |
9809 | ||
9810 | /* If this is a mips16 symbol, force the value to be even. */ | |
30c09090 | 9811 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
0a44bf69 RS |
9812 | sym->st_value &= ~1; |
9813 | ||
9814 | return TRUE; | |
9815 | } | |
9816 | ||
861fb55a DJ |
9817 | /* Write out a plt0 entry to the beginning of .plt. */ |
9818 | ||
9819 | static void | |
9820 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9821 | { | |
9822 | bfd_byte *loc; | |
9823 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
9824 | static const bfd_vma *plt_entry; | |
9825 | struct mips_elf_link_hash_table *htab; | |
9826 | ||
9827 | htab = mips_elf_hash_table (info); | |
9828 | if (ABI_64_P (output_bfd)) | |
9829 | plt_entry = mips_n64_exec_plt0_entry; | |
9830 | else if (ABI_N32_P (output_bfd)) | |
9831 | plt_entry = mips_n32_exec_plt0_entry; | |
9832 | else | |
9833 | plt_entry = mips_o32_exec_plt0_entry; | |
9834 | ||
9835 | /* Calculate the value of .got.plt. */ | |
9836 | gotplt_value = (htab->sgotplt->output_section->vma | |
9837 | + htab->sgotplt->output_offset); | |
9838 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; | |
9839 | gotplt_value_low = gotplt_value & 0xffff; | |
9840 | ||
9841 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
9842 | not be loaded in two instructions. */ | |
9843 | BFD_ASSERT ((gotplt_value & ~(bfd_vma) 0x7fffffff) == 0 | |
9844 | || ~(gotplt_value | 0x7fffffff) == 0); | |
9845 | ||
9846 | /* Install the PLT header. */ | |
9847 | loc = htab->splt->contents; | |
9848 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
9849 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
9850 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
9851 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9852 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9853 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9854 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
9855 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
9856 | } | |
9857 | ||
0a44bf69 RS |
9858 | /* Install the PLT header for a VxWorks executable and finalize the |
9859 | contents of .rela.plt.unloaded. */ | |
9860 | ||
9861 | static void | |
9862 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9863 | { | |
9864 | Elf_Internal_Rela rela; | |
9865 | bfd_byte *loc; | |
9866 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
9867 | static const bfd_vma *plt_entry; | |
9868 | struct mips_elf_link_hash_table *htab; | |
9869 | ||
9870 | htab = mips_elf_hash_table (info); | |
9871 | plt_entry = mips_vxworks_exec_plt0_entry; | |
9872 | ||
9873 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
9874 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
9875 | + htab->root.hgot->root.u.def.section->output_offset | |
9876 | + htab->root.hgot->root.u.def.value); | |
9877 | ||
9878 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
9879 | got_value_low = got_value & 0xffff; | |
9880 | ||
9881 | /* Calculate the address of the PLT header. */ | |
9882 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
9883 | ||
9884 | /* Install the PLT header. */ | |
9885 | loc = htab->splt->contents; | |
9886 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
9887 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
9888 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
9889 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9890 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9891 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9892 | ||
9893 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
9894 | loc = htab->srelplt2->contents; | |
9895 | rela.r_offset = plt_address; | |
9896 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9897 | rela.r_addend = 0; | |
9898 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9899 | loc += sizeof (Elf32_External_Rela); | |
9900 | ||
9901 | /* Output the relocation for the following addiu of | |
9902 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
9903 | rela.r_offset += 4; | |
9904 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9905 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9906 | loc += sizeof (Elf32_External_Rela); | |
9907 | ||
9908 | /* Fix up the remaining relocations. They may have the wrong | |
9909 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
9910 | in which symbols were output. */ | |
9911 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
9912 | { | |
9913 | Elf_Internal_Rela rel; | |
9914 | ||
9915 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9916 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
9917 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9918 | loc += sizeof (Elf32_External_Rela); | |
9919 | ||
9920 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9921 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9922 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9923 | loc += sizeof (Elf32_External_Rela); | |
9924 | ||
9925 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9926 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9927 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9928 | loc += sizeof (Elf32_External_Rela); | |
9929 | } | |
9930 | } | |
9931 | ||
9932 | /* Install the PLT header for a VxWorks shared library. */ | |
9933 | ||
9934 | static void | |
9935 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9936 | { | |
9937 | unsigned int i; | |
9938 | struct mips_elf_link_hash_table *htab; | |
9939 | ||
9940 | htab = mips_elf_hash_table (info); | |
9941 | ||
9942 | /* We just need to copy the entry byte-by-byte. */ | |
9943 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
9944 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
9945 | htab->splt->contents + i * 4); | |
9946 | } | |
9947 | ||
b49e97c9 TS |
9948 | /* Finish up the dynamic sections. */ |
9949 | ||
b34976b6 | 9950 | bfd_boolean |
9719ad41 RS |
9951 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
9952 | struct bfd_link_info *info) | |
b49e97c9 TS |
9953 | { |
9954 | bfd *dynobj; | |
9955 | asection *sdyn; | |
9956 | asection *sgot; | |
f4416af6 | 9957 | struct mips_got_info *gg, *g; |
0a44bf69 | 9958 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9959 | |
0a44bf69 | 9960 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
9961 | dynobj = elf_hash_table (info)->dynobj; |
9962 | ||
9963 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
9964 | ||
23cc69b6 RS |
9965 | sgot = htab->sgot; |
9966 | gg = htab->got_info; | |
b49e97c9 TS |
9967 | |
9968 | if (elf_hash_table (info)->dynamic_sections_created) | |
9969 | { | |
9970 | bfd_byte *b; | |
943284cc | 9971 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
9972 | |
9973 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
9974 | BFD_ASSERT (gg != NULL); |
9975 | ||
9976 | g = mips_elf_got_for_ibfd (gg, output_bfd); | |
b49e97c9 TS |
9977 | BFD_ASSERT (g != NULL); |
9978 | ||
9979 | for (b = sdyn->contents; | |
eea6121a | 9980 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
9981 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
9982 | { | |
9983 | Elf_Internal_Dyn dyn; | |
9984 | const char *name; | |
9985 | size_t elemsize; | |
9986 | asection *s; | |
b34976b6 | 9987 | bfd_boolean swap_out_p; |
b49e97c9 TS |
9988 | |
9989 | /* Read in the current dynamic entry. */ | |
9990 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
9991 | ||
9992 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 9993 | swap_out_p = TRUE; |
b49e97c9 TS |
9994 | |
9995 | switch (dyn.d_tag) | |
9996 | { | |
9997 | case DT_RELENT: | |
b49e97c9 TS |
9998 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
9999 | break; | |
10000 | ||
0a44bf69 RS |
10001 | case DT_RELAENT: |
10002 | BFD_ASSERT (htab->is_vxworks); | |
10003 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
10004 | break; | |
10005 | ||
b49e97c9 TS |
10006 | case DT_STRSZ: |
10007 | /* Rewrite DT_STRSZ. */ | |
10008 | dyn.d_un.d_val = | |
10009 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
10010 | break; | |
10011 | ||
10012 | case DT_PLTGOT: | |
861fb55a DJ |
10013 | s = htab->sgot; |
10014 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10015 | break; | |
10016 | ||
10017 | case DT_MIPS_PLTGOT: | |
10018 | s = htab->sgotplt; | |
10019 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
b49e97c9 TS |
10020 | break; |
10021 | ||
10022 | case DT_MIPS_RLD_VERSION: | |
10023 | dyn.d_un.d_val = 1; /* XXX */ | |
10024 | break; | |
10025 | ||
10026 | case DT_MIPS_FLAGS: | |
10027 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
10028 | break; | |
10029 | ||
b49e97c9 | 10030 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
10031 | { |
10032 | time_t t; | |
10033 | time (&t); | |
10034 | dyn.d_un.d_val = t; | |
10035 | } | |
b49e97c9 TS |
10036 | break; |
10037 | ||
10038 | case DT_MIPS_ICHECKSUM: | |
10039 | /* XXX FIXME: */ | |
b34976b6 | 10040 | swap_out_p = FALSE; |
b49e97c9 TS |
10041 | break; |
10042 | ||
10043 | case DT_MIPS_IVERSION: | |
10044 | /* XXX FIXME: */ | |
b34976b6 | 10045 | swap_out_p = FALSE; |
b49e97c9 TS |
10046 | break; |
10047 | ||
10048 | case DT_MIPS_BASE_ADDRESS: | |
10049 | s = output_bfd->sections; | |
10050 | BFD_ASSERT (s != NULL); | |
10051 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
10052 | break; | |
10053 | ||
10054 | case DT_MIPS_LOCAL_GOTNO: | |
10055 | dyn.d_un.d_val = g->local_gotno; | |
10056 | break; | |
10057 | ||
10058 | case DT_MIPS_UNREFEXTNO: | |
10059 | /* The index into the dynamic symbol table which is the | |
10060 | entry of the first external symbol that is not | |
10061 | referenced within the same object. */ | |
10062 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
10063 | break; | |
10064 | ||
10065 | case DT_MIPS_GOTSYM: | |
f4416af6 | 10066 | if (gg->global_gotsym) |
b49e97c9 | 10067 | { |
f4416af6 | 10068 | dyn.d_un.d_val = gg->global_gotsym->dynindx; |
b49e97c9 TS |
10069 | break; |
10070 | } | |
10071 | /* In case if we don't have global got symbols we default | |
10072 | to setting DT_MIPS_GOTSYM to the same value as | |
10073 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
10074 | ||
10075 | case DT_MIPS_SYMTABNO: | |
10076 | name = ".dynsym"; | |
10077 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
10078 | s = bfd_get_section_by_name (output_bfd, name); | |
10079 | BFD_ASSERT (s != NULL); | |
10080 | ||
eea6121a | 10081 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
10082 | break; |
10083 | ||
10084 | case DT_MIPS_HIPAGENO: | |
861fb55a | 10085 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
10086 | break; |
10087 | ||
10088 | case DT_MIPS_RLD_MAP: | |
10089 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
10090 | break; | |
10091 | ||
10092 | case DT_MIPS_OPTIONS: | |
10093 | s = (bfd_get_section_by_name | |
10094 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
10095 | dyn.d_un.d_ptr = s->vma; | |
10096 | break; | |
10097 | ||
0a44bf69 RS |
10098 | case DT_RELASZ: |
10099 | BFD_ASSERT (htab->is_vxworks); | |
10100 | /* The count does not include the JUMP_SLOT relocations. */ | |
10101 | if (htab->srelplt) | |
10102 | dyn.d_un.d_val -= htab->srelplt->size; | |
10103 | break; | |
10104 | ||
10105 | case DT_PLTREL: | |
861fb55a DJ |
10106 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10107 | if (htab->is_vxworks) | |
10108 | dyn.d_un.d_val = DT_RELA; | |
10109 | else | |
10110 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
10111 | break; |
10112 | ||
10113 | case DT_PLTRELSZ: | |
861fb55a | 10114 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
0a44bf69 RS |
10115 | dyn.d_un.d_val = htab->srelplt->size; |
10116 | break; | |
10117 | ||
10118 | case DT_JMPREL: | |
861fb55a DJ |
10119 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10120 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma | |
0a44bf69 RS |
10121 | + htab->srelplt->output_offset); |
10122 | break; | |
10123 | ||
943284cc DJ |
10124 | case DT_TEXTREL: |
10125 | /* If we didn't need any text relocations after all, delete | |
10126 | the dynamic tag. */ | |
10127 | if (!(info->flags & DF_TEXTREL)) | |
10128 | { | |
10129 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10130 | swap_out_p = FALSE; | |
10131 | } | |
10132 | break; | |
10133 | ||
10134 | case DT_FLAGS: | |
10135 | /* If we didn't need any text relocations after all, clear | |
10136 | DF_TEXTREL from DT_FLAGS. */ | |
10137 | if (!(info->flags & DF_TEXTREL)) | |
10138 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
10139 | else | |
10140 | swap_out_p = FALSE; | |
10141 | break; | |
10142 | ||
b49e97c9 | 10143 | default: |
b34976b6 | 10144 | swap_out_p = FALSE; |
7a2b07ff NS |
10145 | if (htab->is_vxworks |
10146 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10147 | swap_out_p = TRUE; | |
b49e97c9 TS |
10148 | break; |
10149 | } | |
10150 | ||
943284cc | 10151 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 10152 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
10153 | (dynobj, &dyn, b - dyn_skipped); |
10154 | ||
10155 | if (dyn_to_skip) | |
10156 | { | |
10157 | dyn_skipped += dyn_to_skip; | |
10158 | dyn_to_skip = 0; | |
10159 | } | |
b49e97c9 | 10160 | } |
943284cc DJ |
10161 | |
10162 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
10163 | if (dyn_skipped > 0) | |
10164 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
10165 | } |
10166 | ||
b55fd4d4 DJ |
10167 | if (sgot != NULL && sgot->size > 0 |
10168 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 10169 | { |
0a44bf69 RS |
10170 | if (htab->is_vxworks) |
10171 | { | |
10172 | /* The first entry of the global offset table points to the | |
10173 | ".dynamic" section. The second is initialized by the | |
10174 | loader and contains the shared library identifier. | |
10175 | The third is also initialized by the loader and points | |
10176 | to the lazy resolution stub. */ | |
10177 | MIPS_ELF_PUT_WORD (output_bfd, | |
10178 | sdyn->output_offset + sdyn->output_section->vma, | |
10179 | sgot->contents); | |
10180 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10181 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
10182 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10183 | sgot->contents | |
10184 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
10185 | } | |
10186 | else | |
10187 | { | |
10188 | /* The first entry of the global offset table will be filled at | |
10189 | runtime. The second entry will be used by some runtime loaders. | |
10190 | This isn't the case of IRIX rld. */ | |
10191 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 10192 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
10193 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
10194 | } | |
b49e97c9 | 10195 | |
54938e2a TS |
10196 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
10197 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
10198 | } | |
b49e97c9 | 10199 | |
f4416af6 AO |
10200 | /* Generate dynamic relocations for the non-primary gots. */ |
10201 | if (gg != NULL && gg->next) | |
10202 | { | |
10203 | Elf_Internal_Rela rel[3]; | |
10204 | bfd_vma addend = 0; | |
10205 | ||
10206 | memset (rel, 0, sizeof (rel)); | |
10207 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
10208 | ||
10209 | for (g = gg->next; g->next != gg; g = g->next) | |
10210 | { | |
0f20cc35 DJ |
10211 | bfd_vma index = g->next->local_gotno + g->next->global_gotno |
10212 | + g->next->tls_gotno; | |
f4416af6 | 10213 | |
9719ad41 | 10214 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
f4416af6 | 10215 | + index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
10216 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
10217 | sgot->contents | |
f4416af6 AO |
10218 | + index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
10219 | ||
10220 | if (! info->shared) | |
10221 | continue; | |
10222 | ||
10223 | while (index < g->assigned_gotno) | |
10224 | { | |
10225 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
10226 | = index++ * MIPS_ELF_GOT_SIZE (output_bfd); | |
10227 | if (!(mips_elf_create_dynamic_relocation | |
10228 | (output_bfd, info, rel, NULL, | |
10229 | bfd_abs_section_ptr, | |
10230 | 0, &addend, sgot))) | |
10231 | return FALSE; | |
10232 | BFD_ASSERT (addend == 0); | |
10233 | } | |
10234 | } | |
10235 | } | |
10236 | ||
3133ddbf DJ |
10237 | /* The generation of dynamic relocations for the non-primary gots |
10238 | adds more dynamic relocations. We cannot count them until | |
10239 | here. */ | |
10240 | ||
10241 | if (elf_hash_table (info)->dynamic_sections_created) | |
10242 | { | |
10243 | bfd_byte *b; | |
10244 | bfd_boolean swap_out_p; | |
10245 | ||
10246 | BFD_ASSERT (sdyn != NULL); | |
10247 | ||
10248 | for (b = sdyn->contents; | |
10249 | b < sdyn->contents + sdyn->size; | |
10250 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
10251 | { | |
10252 | Elf_Internal_Dyn dyn; | |
10253 | asection *s; | |
10254 | ||
10255 | /* Read in the current dynamic entry. */ | |
10256 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10257 | ||
10258 | /* Assume that we're going to modify it and write it out. */ | |
10259 | swap_out_p = TRUE; | |
10260 | ||
10261 | switch (dyn.d_tag) | |
10262 | { | |
10263 | case DT_RELSZ: | |
10264 | /* Reduce DT_RELSZ to account for any relocations we | |
10265 | decided not to make. This is for the n64 irix rld, | |
10266 | which doesn't seem to apply any relocations if there | |
10267 | are trailing null entries. */ | |
0a44bf69 | 10268 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
10269 | dyn.d_un.d_val = (s->reloc_count |
10270 | * (ABI_64_P (output_bfd) | |
10271 | ? sizeof (Elf64_Mips_External_Rel) | |
10272 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
10273 | /* Adjust the section size too. Tools like the prelinker |
10274 | can reasonably expect the values to the same. */ | |
10275 | elf_section_data (s->output_section)->this_hdr.sh_size | |
10276 | = dyn.d_un.d_val; | |
3133ddbf DJ |
10277 | break; |
10278 | ||
10279 | default: | |
10280 | swap_out_p = FALSE; | |
10281 | break; | |
10282 | } | |
10283 | ||
10284 | if (swap_out_p) | |
10285 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
10286 | (dynobj, &dyn, b); | |
10287 | } | |
10288 | } | |
10289 | ||
b49e97c9 | 10290 | { |
b49e97c9 TS |
10291 | asection *s; |
10292 | Elf32_compact_rel cpt; | |
10293 | ||
b49e97c9 TS |
10294 | if (SGI_COMPAT (output_bfd)) |
10295 | { | |
10296 | /* Write .compact_rel section out. */ | |
10297 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
10298 | if (s != NULL) | |
10299 | { | |
10300 | cpt.id1 = 1; | |
10301 | cpt.num = s->reloc_count; | |
10302 | cpt.id2 = 2; | |
10303 | cpt.offset = (s->output_section->filepos | |
10304 | + sizeof (Elf32_External_compact_rel)); | |
10305 | cpt.reserved0 = 0; | |
10306 | cpt.reserved1 = 0; | |
10307 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
10308 | ((Elf32_External_compact_rel *) | |
10309 | s->contents)); | |
10310 | ||
10311 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 10312 | if (htab->sstubs != NULL) |
b49e97c9 TS |
10313 | { |
10314 | file_ptr dummy_offset; | |
10315 | ||
4e41d0d7 RS |
10316 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
10317 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
10318 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 10319 | htab->function_stub_size); |
b49e97c9 TS |
10320 | } |
10321 | } | |
10322 | } | |
10323 | ||
0a44bf69 RS |
10324 | /* The psABI says that the dynamic relocations must be sorted in |
10325 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
10326 | this, and because the code below handles REL rather than RELA | |
10327 | relocations, using it for VxWorks would be outright harmful. */ | |
10328 | if (!htab->is_vxworks) | |
b49e97c9 | 10329 | { |
0a44bf69 RS |
10330 | s = mips_elf_rel_dyn_section (info, FALSE); |
10331 | if (s != NULL | |
10332 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
10333 | { | |
10334 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 10335 | |
0a44bf69 RS |
10336 | if (ABI_64_P (output_bfd)) |
10337 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
10338 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
10339 | sort_dynamic_relocs_64); | |
10340 | else | |
10341 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
10342 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
10343 | sort_dynamic_relocs); | |
10344 | } | |
b49e97c9 | 10345 | } |
b49e97c9 TS |
10346 | } |
10347 | ||
861fb55a | 10348 | if (htab->splt && htab->splt->size > 0) |
0a44bf69 | 10349 | { |
861fb55a DJ |
10350 | if (htab->is_vxworks) |
10351 | { | |
10352 | if (info->shared) | |
10353 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
10354 | else | |
10355 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
10356 | } | |
0a44bf69 | 10357 | else |
861fb55a DJ |
10358 | { |
10359 | BFD_ASSERT (!info->shared); | |
10360 | mips_finish_exec_plt (output_bfd, info); | |
10361 | } | |
0a44bf69 | 10362 | } |
b34976b6 | 10363 | return TRUE; |
b49e97c9 TS |
10364 | } |
10365 | ||
b49e97c9 | 10366 | |
64543e1a RS |
10367 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
10368 | ||
10369 | static void | |
9719ad41 | 10370 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 10371 | { |
64543e1a | 10372 | flagword val; |
b49e97c9 TS |
10373 | |
10374 | switch (bfd_get_mach (abfd)) | |
10375 | { | |
10376 | default: | |
10377 | case bfd_mach_mips3000: | |
10378 | val = E_MIPS_ARCH_1; | |
10379 | break; | |
10380 | ||
10381 | case bfd_mach_mips3900: | |
10382 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
10383 | break; | |
10384 | ||
10385 | case bfd_mach_mips6000: | |
10386 | val = E_MIPS_ARCH_2; | |
10387 | break; | |
10388 | ||
10389 | case bfd_mach_mips4000: | |
10390 | case bfd_mach_mips4300: | |
10391 | case bfd_mach_mips4400: | |
10392 | case bfd_mach_mips4600: | |
10393 | val = E_MIPS_ARCH_3; | |
10394 | break; | |
10395 | ||
10396 | case bfd_mach_mips4010: | |
10397 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
10398 | break; | |
10399 | ||
10400 | case bfd_mach_mips4100: | |
10401 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
10402 | break; | |
10403 | ||
10404 | case bfd_mach_mips4111: | |
10405 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
10406 | break; | |
10407 | ||
00707a0e RS |
10408 | case bfd_mach_mips4120: |
10409 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
10410 | break; | |
10411 | ||
b49e97c9 TS |
10412 | case bfd_mach_mips4650: |
10413 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
10414 | break; | |
10415 | ||
00707a0e RS |
10416 | case bfd_mach_mips5400: |
10417 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
10418 | break; | |
10419 | ||
10420 | case bfd_mach_mips5500: | |
10421 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
10422 | break; | |
10423 | ||
0d2e43ed ILT |
10424 | case bfd_mach_mips9000: |
10425 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
10426 | break; | |
10427 | ||
b49e97c9 | 10428 | case bfd_mach_mips5000: |
5a7ea749 | 10429 | case bfd_mach_mips7000: |
b49e97c9 TS |
10430 | case bfd_mach_mips8000: |
10431 | case bfd_mach_mips10000: | |
10432 | case bfd_mach_mips12000: | |
3aa3176b TS |
10433 | case bfd_mach_mips14000: |
10434 | case bfd_mach_mips16000: | |
b49e97c9 TS |
10435 | val = E_MIPS_ARCH_4; |
10436 | break; | |
10437 | ||
10438 | case bfd_mach_mips5: | |
10439 | val = E_MIPS_ARCH_5; | |
10440 | break; | |
10441 | ||
350cc38d MS |
10442 | case bfd_mach_mips_loongson_2e: |
10443 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
10444 | break; | |
10445 | ||
10446 | case bfd_mach_mips_loongson_2f: | |
10447 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
10448 | break; | |
10449 | ||
b49e97c9 TS |
10450 | case bfd_mach_mips_sb1: |
10451 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
10452 | break; | |
10453 | ||
6f179bd0 AN |
10454 | case bfd_mach_mips_octeon: |
10455 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; | |
10456 | break; | |
10457 | ||
52b6b6b9 JM |
10458 | case bfd_mach_mips_xlr: |
10459 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
10460 | break; | |
10461 | ||
b49e97c9 TS |
10462 | case bfd_mach_mipsisa32: |
10463 | val = E_MIPS_ARCH_32; | |
10464 | break; | |
10465 | ||
10466 | case bfd_mach_mipsisa64: | |
10467 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
10468 | break; |
10469 | ||
10470 | case bfd_mach_mipsisa32r2: | |
10471 | val = E_MIPS_ARCH_32R2; | |
10472 | break; | |
5f74bc13 CD |
10473 | |
10474 | case bfd_mach_mipsisa64r2: | |
10475 | val = E_MIPS_ARCH_64R2; | |
10476 | break; | |
b49e97c9 | 10477 | } |
b49e97c9 TS |
10478 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
10479 | elf_elfheader (abfd)->e_flags |= val; | |
10480 | ||
64543e1a RS |
10481 | } |
10482 | ||
10483 | ||
10484 | /* The final processing done just before writing out a MIPS ELF object | |
10485 | file. This gets the MIPS architecture right based on the machine | |
10486 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
10487 | ||
10488 | void | |
9719ad41 RS |
10489 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
10490 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
10491 | { |
10492 | unsigned int i; | |
10493 | Elf_Internal_Shdr **hdrpp; | |
10494 | const char *name; | |
10495 | asection *sec; | |
10496 | ||
10497 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
10498 | is nonzero. This is for compatibility with old objects, which used | |
10499 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
10500 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
10501 | mips_set_isa_flags (abfd); | |
10502 | ||
b49e97c9 TS |
10503 | /* Set the sh_info field for .gptab sections and other appropriate |
10504 | info for each special section. */ | |
10505 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
10506 | i < elf_numsections (abfd); | |
10507 | i++, hdrpp++) | |
10508 | { | |
10509 | switch ((*hdrpp)->sh_type) | |
10510 | { | |
10511 | case SHT_MIPS_MSYM: | |
10512 | case SHT_MIPS_LIBLIST: | |
10513 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
10514 | if (sec != NULL) | |
10515 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10516 | break; | |
10517 | ||
10518 | case SHT_MIPS_GPTAB: | |
10519 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10520 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10521 | BFD_ASSERT (name != NULL | |
0112cd26 | 10522 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
10523 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
10524 | BFD_ASSERT (sec != NULL); | |
10525 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
10526 | break; | |
10527 | ||
10528 | case SHT_MIPS_CONTENT: | |
10529 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10530 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10531 | BFD_ASSERT (name != NULL | |
0112cd26 | 10532 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
10533 | sec = bfd_get_section_by_name (abfd, |
10534 | name + sizeof ".MIPS.content" - 1); | |
10535 | BFD_ASSERT (sec != NULL); | |
10536 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10537 | break; | |
10538 | ||
10539 | case SHT_MIPS_SYMBOL_LIB: | |
10540 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
10541 | if (sec != NULL) | |
10542 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10543 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
10544 | if (sec != NULL) | |
10545 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
10546 | break; | |
10547 | ||
10548 | case SHT_MIPS_EVENTS: | |
10549 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10550 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10551 | BFD_ASSERT (name != NULL); | |
0112cd26 | 10552 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
10553 | sec = bfd_get_section_by_name (abfd, |
10554 | name + sizeof ".MIPS.events" - 1); | |
10555 | else | |
10556 | { | |
0112cd26 | 10557 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
10558 | sec = bfd_get_section_by_name (abfd, |
10559 | (name | |
10560 | + sizeof ".MIPS.post_rel" - 1)); | |
10561 | } | |
10562 | BFD_ASSERT (sec != NULL); | |
10563 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10564 | break; | |
10565 | ||
10566 | } | |
10567 | } | |
10568 | } | |
10569 | \f | |
8dc1a139 | 10570 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
10571 | segments. */ |
10572 | ||
10573 | int | |
a6b96beb AM |
10574 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
10575 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
10576 | { |
10577 | asection *s; | |
10578 | int ret = 0; | |
10579 | ||
10580 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
10581 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
10582 | if (s && (s->flags & SEC_LOAD)) | |
10583 | ++ret; | |
10584 | ||
10585 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
10586 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
10587 | && bfd_get_section_by_name (abfd, | |
10588 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
10589 | ++ret; | |
10590 | ||
10591 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
10592 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
10593 | && bfd_get_section_by_name (abfd, ".dynamic") | |
10594 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
10595 | ++ret; | |
10596 | ||
98c904a8 RS |
10597 | /* Allocate a PT_NULL header in dynamic objects. See |
10598 | _bfd_mips_elf_modify_segment_map for details. */ | |
10599 | if (!SGI_COMPAT (abfd) | |
10600 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
10601 | ++ret; | |
10602 | ||
b49e97c9 TS |
10603 | return ret; |
10604 | } | |
10605 | ||
8dc1a139 | 10606 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 10607 | |
b34976b6 | 10608 | bfd_boolean |
9719ad41 | 10609 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 10610 | struct bfd_link_info *info) |
b49e97c9 TS |
10611 | { |
10612 | asection *s; | |
10613 | struct elf_segment_map *m, **pm; | |
10614 | bfd_size_type amt; | |
10615 | ||
10616 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
10617 | segment. */ | |
10618 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
10619 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
10620 | { | |
10621 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
10622 | if (m->p_type == PT_MIPS_REGINFO) | |
10623 | break; | |
10624 | if (m == NULL) | |
10625 | { | |
10626 | amt = sizeof *m; | |
9719ad41 | 10627 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 10628 | if (m == NULL) |
b34976b6 | 10629 | return FALSE; |
b49e97c9 TS |
10630 | |
10631 | m->p_type = PT_MIPS_REGINFO; | |
10632 | m->count = 1; | |
10633 | m->sections[0] = s; | |
10634 | ||
10635 | /* We want to put it after the PHDR and INTERP segments. */ | |
10636 | pm = &elf_tdata (abfd)->segment_map; | |
10637 | while (*pm != NULL | |
10638 | && ((*pm)->p_type == PT_PHDR | |
10639 | || (*pm)->p_type == PT_INTERP)) | |
10640 | pm = &(*pm)->next; | |
10641 | ||
10642 | m->next = *pm; | |
10643 | *pm = m; | |
10644 | } | |
10645 | } | |
10646 | ||
10647 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
10648 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 10649 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 10650 | table. */ |
c1fd6598 AO |
10651 | if (NEWABI_P (abfd) |
10652 | /* On non-IRIX6 new abi, we'll have already created a segment | |
10653 | for this section, so don't create another. I'm not sure this | |
10654 | is not also the case for IRIX 6, but I can't test it right | |
10655 | now. */ | |
10656 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
10657 | { |
10658 | for (s = abfd->sections; s; s = s->next) | |
10659 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
10660 | break; | |
10661 | ||
10662 | if (s) | |
10663 | { | |
10664 | struct elf_segment_map *options_segment; | |
10665 | ||
98a8deaf RS |
10666 | pm = &elf_tdata (abfd)->segment_map; |
10667 | while (*pm != NULL | |
10668 | && ((*pm)->p_type == PT_PHDR | |
10669 | || (*pm)->p_type == PT_INTERP)) | |
10670 | pm = &(*pm)->next; | |
b49e97c9 | 10671 | |
8ded5a0f AM |
10672 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
10673 | { | |
10674 | amt = sizeof (struct elf_segment_map); | |
10675 | options_segment = bfd_zalloc (abfd, amt); | |
10676 | options_segment->next = *pm; | |
10677 | options_segment->p_type = PT_MIPS_OPTIONS; | |
10678 | options_segment->p_flags = PF_R; | |
10679 | options_segment->p_flags_valid = TRUE; | |
10680 | options_segment->count = 1; | |
10681 | options_segment->sections[0] = s; | |
10682 | *pm = options_segment; | |
10683 | } | |
b49e97c9 TS |
10684 | } |
10685 | } | |
10686 | else | |
10687 | { | |
10688 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
10689 | { | |
10690 | /* If there are .dynamic and .mdebug sections, we make a room | |
10691 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
10692 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
10693 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
10694 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
10695 | { | |
10696 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
10697 | if (m->p_type == PT_MIPS_RTPROC) | |
10698 | break; | |
10699 | if (m == NULL) | |
10700 | { | |
10701 | amt = sizeof *m; | |
9719ad41 | 10702 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 10703 | if (m == NULL) |
b34976b6 | 10704 | return FALSE; |
b49e97c9 TS |
10705 | |
10706 | m->p_type = PT_MIPS_RTPROC; | |
10707 | ||
10708 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
10709 | if (s == NULL) | |
10710 | { | |
10711 | m->count = 0; | |
10712 | m->p_flags = 0; | |
10713 | m->p_flags_valid = 1; | |
10714 | } | |
10715 | else | |
10716 | { | |
10717 | m->count = 1; | |
10718 | m->sections[0] = s; | |
10719 | } | |
10720 | ||
10721 | /* We want to put it after the DYNAMIC segment. */ | |
10722 | pm = &elf_tdata (abfd)->segment_map; | |
10723 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
10724 | pm = &(*pm)->next; | |
10725 | if (*pm != NULL) | |
10726 | pm = &(*pm)->next; | |
10727 | ||
10728 | m->next = *pm; | |
10729 | *pm = m; | |
10730 | } | |
10731 | } | |
10732 | } | |
8dc1a139 | 10733 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
10734 | .dynstr, .dynsym, and .hash sections, and everything in |
10735 | between. */ | |
10736 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; | |
10737 | pm = &(*pm)->next) | |
10738 | if ((*pm)->p_type == PT_DYNAMIC) | |
10739 | break; | |
10740 | m = *pm; | |
10741 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
10742 | { | |
10743 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
10744 | segment are read, write and execute. We do that here since | |
10745 | the code in elf.c sets only the read permission. This matters | |
10746 | sometimes for the dynamic linker. */ | |
10747 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
10748 | { | |
10749 | m->p_flags = PF_R | PF_W | PF_X; | |
10750 | m->p_flags_valid = 1; | |
10751 | } | |
10752 | } | |
f6f62d6f RS |
10753 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
10754 | glibc's dynamic linker has traditionally derived the number of | |
10755 | tags from the p_filesz field, and sometimes allocates stack | |
10756 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
10757 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
10758 | other sections can also make life hard for the prelinker, | |
10759 | which might move one of the other sections to a different | |
10760 | PT_LOAD segment. */ | |
10761 | if (SGI_COMPAT (abfd) | |
10762 | && m != NULL | |
10763 | && m->count == 1 | |
10764 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
10765 | { |
10766 | static const char *sec_names[] = | |
10767 | { | |
10768 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
10769 | }; | |
10770 | bfd_vma low, high; | |
10771 | unsigned int i, c; | |
10772 | struct elf_segment_map *n; | |
10773 | ||
792b4a53 | 10774 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
10775 | high = 0; |
10776 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
10777 | { | |
10778 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
10779 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
10780 | { | |
10781 | bfd_size_type sz; | |
10782 | ||
10783 | if (low > s->vma) | |
10784 | low = s->vma; | |
eea6121a | 10785 | sz = s->size; |
b49e97c9 TS |
10786 | if (high < s->vma + sz) |
10787 | high = s->vma + sz; | |
10788 | } | |
10789 | } | |
10790 | ||
10791 | c = 0; | |
10792 | for (s = abfd->sections; s != NULL; s = s->next) | |
10793 | if ((s->flags & SEC_LOAD) != 0 | |
10794 | && s->vma >= low | |
eea6121a | 10795 | && s->vma + s->size <= high) |
b49e97c9 TS |
10796 | ++c; |
10797 | ||
10798 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 10799 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 10800 | if (n == NULL) |
b34976b6 | 10801 | return FALSE; |
b49e97c9 TS |
10802 | *n = *m; |
10803 | n->count = c; | |
10804 | ||
10805 | i = 0; | |
10806 | for (s = abfd->sections; s != NULL; s = s->next) | |
10807 | { | |
10808 | if ((s->flags & SEC_LOAD) != 0 | |
10809 | && s->vma >= low | |
eea6121a | 10810 | && s->vma + s->size <= high) |
b49e97c9 TS |
10811 | { |
10812 | n->sections[i] = s; | |
10813 | ++i; | |
10814 | } | |
10815 | } | |
10816 | ||
10817 | *pm = n; | |
10818 | } | |
10819 | } | |
10820 | ||
98c904a8 RS |
10821 | /* Allocate a spare program header in dynamic objects so that tools |
10822 | like the prelinker can add an extra PT_LOAD entry. | |
10823 | ||
10824 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
10825 | standard procedure is to move the first (read-only) sections into | |
10826 | the new (writable) segment. However, the MIPS ABI requires | |
10827 | .dynamic to be in a read-only segment, and the section will often | |
10828 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
10829 | ||
10830 | Although the prelinker could in principle move .dynamic to a | |
10831 | writable segment, it seems better to allocate a spare program | |
10832 | header instead, and avoid the need to move any sections. | |
10833 | There is a long tradition of allocating spare dynamic tags, | |
10834 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
10835 | extension. |
10836 | ||
10837 | If INFO is NULL, we may be copying an already prelinked binary | |
10838 | with objcopy or strip, so do not add this header. */ | |
10839 | if (info != NULL | |
10840 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
10841 | && bfd_get_section_by_name (abfd, ".dynamic")) |
10842 | { | |
10843 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
10844 | if ((*pm)->p_type == PT_NULL) | |
10845 | break; | |
10846 | if (*pm == NULL) | |
10847 | { | |
10848 | m = bfd_zalloc (abfd, sizeof (*m)); | |
10849 | if (m == NULL) | |
10850 | return FALSE; | |
10851 | ||
10852 | m->p_type = PT_NULL; | |
10853 | *pm = m; | |
10854 | } | |
10855 | } | |
10856 | ||
b34976b6 | 10857 | return TRUE; |
b49e97c9 TS |
10858 | } |
10859 | \f | |
10860 | /* Return the section that should be marked against GC for a given | |
10861 | relocation. */ | |
10862 | ||
10863 | asection * | |
9719ad41 | 10864 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 10865 | struct bfd_link_info *info, |
9719ad41 RS |
10866 | Elf_Internal_Rela *rel, |
10867 | struct elf_link_hash_entry *h, | |
10868 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10869 | { |
10870 | /* ??? Do mips16 stub sections need to be handled special? */ | |
10871 | ||
10872 | if (h != NULL) | |
07adf181 AM |
10873 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
10874 | { | |
10875 | case R_MIPS_GNU_VTINHERIT: | |
10876 | case R_MIPS_GNU_VTENTRY: | |
10877 | return NULL; | |
10878 | } | |
b49e97c9 | 10879 | |
07adf181 | 10880 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
10881 | } |
10882 | ||
10883 | /* Update the got entry reference counts for the section being removed. */ | |
10884 | ||
b34976b6 | 10885 | bfd_boolean |
9719ad41 RS |
10886 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
10887 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
10888 | asection *sec ATTRIBUTE_UNUSED, | |
10889 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
10890 | { |
10891 | #if 0 | |
10892 | Elf_Internal_Shdr *symtab_hdr; | |
10893 | struct elf_link_hash_entry **sym_hashes; | |
10894 | bfd_signed_vma *local_got_refcounts; | |
10895 | const Elf_Internal_Rela *rel, *relend; | |
10896 | unsigned long r_symndx; | |
10897 | struct elf_link_hash_entry *h; | |
10898 | ||
7dda2462 TG |
10899 | if (info->relocatable) |
10900 | return TRUE; | |
10901 | ||
b49e97c9 TS |
10902 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
10903 | sym_hashes = elf_sym_hashes (abfd); | |
10904 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
10905 | ||
10906 | relend = relocs + sec->reloc_count; | |
10907 | for (rel = relocs; rel < relend; rel++) | |
10908 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
10909 | { | |
738e5348 RS |
10910 | case R_MIPS16_GOT16: |
10911 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
10912 | case R_MIPS_GOT16: |
10913 | case R_MIPS_CALL16: | |
10914 | case R_MIPS_CALL_HI16: | |
10915 | case R_MIPS_CALL_LO16: | |
10916 | case R_MIPS_GOT_HI16: | |
10917 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
10918 | case R_MIPS_GOT_DISP: |
10919 | case R_MIPS_GOT_PAGE: | |
10920 | case R_MIPS_GOT_OFST: | |
b49e97c9 TS |
10921 | /* ??? It would seem that the existing MIPS code does no sort |
10922 | of reference counting or whatnot on its GOT and PLT entries, | |
10923 | so it is not possible to garbage collect them at this time. */ | |
10924 | break; | |
10925 | ||
10926 | default: | |
10927 | break; | |
10928 | } | |
10929 | #endif | |
10930 | ||
b34976b6 | 10931 | return TRUE; |
b49e97c9 TS |
10932 | } |
10933 | \f | |
10934 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
10935 | hiding the old indirect symbol. Process additional relocation | |
10936 | information. Also called for weakdefs, in which case we just let | |
10937 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
10938 | ||
10939 | void | |
fcfa13d2 | 10940 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
10941 | struct elf_link_hash_entry *dir, |
10942 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
10943 | { |
10944 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
10945 | ||
fcfa13d2 | 10946 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 10947 | |
861fb55a DJ |
10948 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
10949 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
10950 | /* Any absolute non-dynamic relocations against an indirect or weak | |
10951 | definition will be against the target symbol. */ | |
10952 | if (indmips->has_static_relocs) | |
10953 | dirmips->has_static_relocs = TRUE; | |
10954 | ||
b49e97c9 TS |
10955 | if (ind->root.type != bfd_link_hash_indirect) |
10956 | return; | |
10957 | ||
b49e97c9 TS |
10958 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
10959 | if (indmips->readonly_reloc) | |
b34976b6 | 10960 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 10961 | if (indmips->no_fn_stub) |
b34976b6 | 10962 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
10963 | if (indmips->fn_stub) |
10964 | { | |
10965 | dirmips->fn_stub = indmips->fn_stub; | |
10966 | indmips->fn_stub = NULL; | |
10967 | } | |
10968 | if (indmips->need_fn_stub) | |
10969 | { | |
10970 | dirmips->need_fn_stub = TRUE; | |
10971 | indmips->need_fn_stub = FALSE; | |
10972 | } | |
10973 | if (indmips->call_stub) | |
10974 | { | |
10975 | dirmips->call_stub = indmips->call_stub; | |
10976 | indmips->call_stub = NULL; | |
10977 | } | |
10978 | if (indmips->call_fp_stub) | |
10979 | { | |
10980 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
10981 | indmips->call_fp_stub = NULL; | |
10982 | } | |
634835ae RS |
10983 | if (indmips->global_got_area < dirmips->global_got_area) |
10984 | dirmips->global_got_area = indmips->global_got_area; | |
10985 | if (indmips->global_got_area < GGA_NONE) | |
10986 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
10987 | if (indmips->has_nonpic_branches) |
10988 | dirmips->has_nonpic_branches = TRUE; | |
0f20cc35 DJ |
10989 | |
10990 | if (dirmips->tls_type == 0) | |
10991 | dirmips->tls_type = indmips->tls_type; | |
b49e97c9 | 10992 | } |
b49e97c9 | 10993 | \f |
d01414a5 TS |
10994 | #define PDR_SIZE 32 |
10995 | ||
b34976b6 | 10996 | bfd_boolean |
9719ad41 RS |
10997 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
10998 | struct bfd_link_info *info) | |
d01414a5 TS |
10999 | { |
11000 | asection *o; | |
b34976b6 | 11001 | bfd_boolean ret = FALSE; |
d01414a5 TS |
11002 | unsigned char *tdata; |
11003 | size_t i, skip; | |
11004 | ||
11005 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
11006 | if (! o) | |
b34976b6 | 11007 | return FALSE; |
eea6121a | 11008 | if (o->size == 0) |
b34976b6 | 11009 | return FALSE; |
eea6121a | 11010 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 11011 | return FALSE; |
d01414a5 TS |
11012 | if (o->output_section != NULL |
11013 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 11014 | return FALSE; |
d01414a5 | 11015 | |
eea6121a | 11016 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 11017 | if (! tdata) |
b34976b6 | 11018 | return FALSE; |
d01414a5 | 11019 | |
9719ad41 | 11020 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 11021 | info->keep_memory); |
d01414a5 TS |
11022 | if (!cookie->rels) |
11023 | { | |
11024 | free (tdata); | |
b34976b6 | 11025 | return FALSE; |
d01414a5 TS |
11026 | } |
11027 | ||
11028 | cookie->rel = cookie->rels; | |
11029 | cookie->relend = cookie->rels + o->reloc_count; | |
11030 | ||
eea6121a | 11031 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 11032 | { |
c152c796 | 11033 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
11034 | { |
11035 | tdata[i] = 1; | |
11036 | skip ++; | |
11037 | } | |
11038 | } | |
11039 | ||
11040 | if (skip != 0) | |
11041 | { | |
f0abc2a1 | 11042 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 11043 | o->size -= skip * PDR_SIZE; |
b34976b6 | 11044 | ret = TRUE; |
d01414a5 TS |
11045 | } |
11046 | else | |
11047 | free (tdata); | |
11048 | ||
11049 | if (! info->keep_memory) | |
11050 | free (cookie->rels); | |
11051 | ||
11052 | return ret; | |
11053 | } | |
11054 | ||
b34976b6 | 11055 | bfd_boolean |
9719ad41 | 11056 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
11057 | { |
11058 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
11059 | return TRUE; |
11060 | return FALSE; | |
53bfd6b4 | 11061 | } |
d01414a5 | 11062 | |
b34976b6 | 11063 | bfd_boolean |
c7b8f16e JB |
11064 | _bfd_mips_elf_write_section (bfd *output_bfd, |
11065 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
11066 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
11067 | { |
11068 | bfd_byte *to, *from, *end; | |
11069 | int i; | |
11070 | ||
11071 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 11072 | return FALSE; |
d01414a5 | 11073 | |
f0abc2a1 | 11074 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 11075 | return FALSE; |
d01414a5 TS |
11076 | |
11077 | to = contents; | |
eea6121a | 11078 | end = contents + sec->size; |
d01414a5 TS |
11079 | for (from = contents, i = 0; |
11080 | from < end; | |
11081 | from += PDR_SIZE, i++) | |
11082 | { | |
f0abc2a1 | 11083 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
11084 | continue; |
11085 | if (to != from) | |
11086 | memcpy (to, from, PDR_SIZE); | |
11087 | to += PDR_SIZE; | |
11088 | } | |
11089 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 11090 | sec->output_offset, sec->size); |
b34976b6 | 11091 | return TRUE; |
d01414a5 | 11092 | } |
53bfd6b4 | 11093 | \f |
b49e97c9 TS |
11094 | /* MIPS ELF uses a special find_nearest_line routine in order the |
11095 | handle the ECOFF debugging information. */ | |
11096 | ||
11097 | struct mips_elf_find_line | |
11098 | { | |
11099 | struct ecoff_debug_info d; | |
11100 | struct ecoff_find_line i; | |
11101 | }; | |
11102 | ||
b34976b6 | 11103 | bfd_boolean |
9719ad41 RS |
11104 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
11105 | asymbol **symbols, bfd_vma offset, | |
11106 | const char **filename_ptr, | |
11107 | const char **functionname_ptr, | |
11108 | unsigned int *line_ptr) | |
b49e97c9 TS |
11109 | { |
11110 | asection *msec; | |
11111 | ||
11112 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
11113 | filename_ptr, functionname_ptr, | |
11114 | line_ptr)) | |
b34976b6 | 11115 | return TRUE; |
b49e97c9 TS |
11116 | |
11117 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
11118 | filename_ptr, functionname_ptr, | |
9719ad41 | 11119 | line_ptr, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 11120 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 11121 | return TRUE; |
b49e97c9 TS |
11122 | |
11123 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
11124 | if (msec != NULL) | |
11125 | { | |
11126 | flagword origflags; | |
11127 | struct mips_elf_find_line *fi; | |
11128 | const struct ecoff_debug_swap * const swap = | |
11129 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
11130 | ||
11131 | /* If we are called during a link, mips_elf_final_link may have | |
11132 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
11133 | if appropriate (which it normally will be). */ | |
11134 | origflags = msec->flags; | |
11135 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
11136 | msec->flags |= SEC_HAS_CONTENTS; | |
11137 | ||
11138 | fi = elf_tdata (abfd)->find_line_info; | |
11139 | if (fi == NULL) | |
11140 | { | |
11141 | bfd_size_type external_fdr_size; | |
11142 | char *fraw_src; | |
11143 | char *fraw_end; | |
11144 | struct fdr *fdr_ptr; | |
11145 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
11146 | ||
9719ad41 | 11147 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
11148 | if (fi == NULL) |
11149 | { | |
11150 | msec->flags = origflags; | |
b34976b6 | 11151 | return FALSE; |
b49e97c9 TS |
11152 | } |
11153 | ||
11154 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
11155 | { | |
11156 | msec->flags = origflags; | |
b34976b6 | 11157 | return FALSE; |
b49e97c9 TS |
11158 | } |
11159 | ||
11160 | /* Swap in the FDR information. */ | |
11161 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 11162 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11163 | if (fi->d.fdr == NULL) |
11164 | { | |
11165 | msec->flags = origflags; | |
b34976b6 | 11166 | return FALSE; |
b49e97c9 TS |
11167 | } |
11168 | external_fdr_size = swap->external_fdr_size; | |
11169 | fdr_ptr = fi->d.fdr; | |
11170 | fraw_src = (char *) fi->d.external_fdr; | |
11171 | fraw_end = (fraw_src | |
11172 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
11173 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 11174 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 TS |
11175 | |
11176 | elf_tdata (abfd)->find_line_info = fi; | |
11177 | ||
11178 | /* Note that we don't bother to ever free this information. | |
11179 | find_nearest_line is either called all the time, as in | |
11180 | objdump -l, so the information should be saved, or it is | |
11181 | rarely called, as in ld error messages, so the memory | |
11182 | wasted is unimportant. Still, it would probably be a | |
11183 | good idea for free_cached_info to throw it away. */ | |
11184 | } | |
11185 | ||
11186 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
11187 | &fi->i, filename_ptr, functionname_ptr, | |
11188 | line_ptr)) | |
11189 | { | |
11190 | msec->flags = origflags; | |
b34976b6 | 11191 | return TRUE; |
b49e97c9 TS |
11192 | } |
11193 | ||
11194 | msec->flags = origflags; | |
11195 | } | |
11196 | ||
11197 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
11198 | ||
11199 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
11200 | filename_ptr, functionname_ptr, | |
11201 | line_ptr); | |
11202 | } | |
4ab527b0 FF |
11203 | |
11204 | bfd_boolean | |
11205 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
11206 | const char **filename_ptr, | |
11207 | const char **functionname_ptr, | |
11208 | unsigned int *line_ptr) | |
11209 | { | |
11210 | bfd_boolean found; | |
11211 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11212 | functionname_ptr, line_ptr, | |
11213 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11214 | return found; | |
11215 | } | |
11216 | ||
b49e97c9 TS |
11217 | \f |
11218 | /* When are writing out the .options or .MIPS.options section, | |
11219 | remember the bytes we are writing out, so that we can install the | |
11220 | GP value in the section_processing routine. */ | |
11221 | ||
b34976b6 | 11222 | bfd_boolean |
9719ad41 RS |
11223 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
11224 | const void *location, | |
11225 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 11226 | { |
cc2e31b9 | 11227 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
11228 | { |
11229 | bfd_byte *c; | |
11230 | ||
11231 | if (elf_section_data (section) == NULL) | |
11232 | { | |
11233 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 11234 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 11235 | if (elf_section_data (section) == NULL) |
b34976b6 | 11236 | return FALSE; |
b49e97c9 | 11237 | } |
f0abc2a1 | 11238 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
11239 | if (c == NULL) |
11240 | { | |
eea6121a | 11241 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 11242 | if (c == NULL) |
b34976b6 | 11243 | return FALSE; |
f0abc2a1 | 11244 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
11245 | } |
11246 | ||
9719ad41 | 11247 | memcpy (c + offset, location, count); |
b49e97c9 TS |
11248 | } |
11249 | ||
11250 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
11251 | count); | |
11252 | } | |
11253 | ||
11254 | /* This is almost identical to bfd_generic_get_... except that some | |
11255 | MIPS relocations need to be handled specially. Sigh. */ | |
11256 | ||
11257 | bfd_byte * | |
9719ad41 RS |
11258 | _bfd_elf_mips_get_relocated_section_contents |
11259 | (bfd *abfd, | |
11260 | struct bfd_link_info *link_info, | |
11261 | struct bfd_link_order *link_order, | |
11262 | bfd_byte *data, | |
11263 | bfd_boolean relocatable, | |
11264 | asymbol **symbols) | |
b49e97c9 TS |
11265 | { |
11266 | /* Get enough memory to hold the stuff */ | |
11267 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
11268 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 11269 | bfd_size_type sz; |
b49e97c9 TS |
11270 | |
11271 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
11272 | arelent **reloc_vector = NULL; | |
11273 | long reloc_count; | |
11274 | ||
11275 | if (reloc_size < 0) | |
11276 | goto error_return; | |
11277 | ||
9719ad41 | 11278 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
11279 | if (reloc_vector == NULL && reloc_size != 0) |
11280 | goto error_return; | |
11281 | ||
11282 | /* read in the section */ | |
eea6121a AM |
11283 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
11284 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
11285 | goto error_return; |
11286 | ||
b49e97c9 TS |
11287 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
11288 | input_section, | |
11289 | reloc_vector, | |
11290 | symbols); | |
11291 | if (reloc_count < 0) | |
11292 | goto error_return; | |
11293 | ||
11294 | if (reloc_count > 0) | |
11295 | { | |
11296 | arelent **parent; | |
11297 | /* for mips */ | |
11298 | int gp_found; | |
11299 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
11300 | ||
11301 | { | |
11302 | struct bfd_hash_entry *h; | |
11303 | struct bfd_link_hash_entry *lh; | |
11304 | /* Skip all this stuff if we aren't mixing formats. */ | |
11305 | if (abfd && input_bfd | |
11306 | && abfd->xvec == input_bfd->xvec) | |
11307 | lh = 0; | |
11308 | else | |
11309 | { | |
b34976b6 | 11310 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
11311 | lh = (struct bfd_link_hash_entry *) h; |
11312 | } | |
11313 | lookup: | |
11314 | if (lh) | |
11315 | { | |
11316 | switch (lh->type) | |
11317 | { | |
11318 | case bfd_link_hash_undefined: | |
11319 | case bfd_link_hash_undefweak: | |
11320 | case bfd_link_hash_common: | |
11321 | gp_found = 0; | |
11322 | break; | |
11323 | case bfd_link_hash_defined: | |
11324 | case bfd_link_hash_defweak: | |
11325 | gp_found = 1; | |
11326 | gp = lh->u.def.value; | |
11327 | break; | |
11328 | case bfd_link_hash_indirect: | |
11329 | case bfd_link_hash_warning: | |
11330 | lh = lh->u.i.link; | |
11331 | /* @@FIXME ignoring warning for now */ | |
11332 | goto lookup; | |
11333 | case bfd_link_hash_new: | |
11334 | default: | |
11335 | abort (); | |
11336 | } | |
11337 | } | |
11338 | else | |
11339 | gp_found = 0; | |
11340 | } | |
11341 | /* end mips */ | |
9719ad41 | 11342 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 11343 | { |
9719ad41 | 11344 | char *error_message = NULL; |
b49e97c9 TS |
11345 | bfd_reloc_status_type r; |
11346 | ||
11347 | /* Specific to MIPS: Deal with relocation types that require | |
11348 | knowing the gp of the output bfd. */ | |
11349 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 11350 | |
8236346f EC |
11351 | /* If we've managed to find the gp and have a special |
11352 | function for the relocation then go ahead, else default | |
11353 | to the generic handling. */ | |
11354 | if (gp_found | |
11355 | && (*parent)->howto->special_function | |
11356 | == _bfd_mips_elf32_gprel16_reloc) | |
11357 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
11358 | input_section, relocatable, | |
11359 | data, gp); | |
11360 | else | |
86324f90 | 11361 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
11362 | input_section, |
11363 | relocatable ? abfd : NULL, | |
11364 | &error_message); | |
b49e97c9 | 11365 | |
1049f94e | 11366 | if (relocatable) |
b49e97c9 TS |
11367 | { |
11368 | asection *os = input_section->output_section; | |
11369 | ||
11370 | /* A partial link, so keep the relocs */ | |
11371 | os->orelocation[os->reloc_count] = *parent; | |
11372 | os->reloc_count++; | |
11373 | } | |
11374 | ||
11375 | if (r != bfd_reloc_ok) | |
11376 | { | |
11377 | switch (r) | |
11378 | { | |
11379 | case bfd_reloc_undefined: | |
11380 | if (!((*link_info->callbacks->undefined_symbol) | |
11381 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 11382 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
11383 | goto error_return; |
11384 | break; | |
11385 | case bfd_reloc_dangerous: | |
9719ad41 | 11386 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
11387 | if (!((*link_info->callbacks->reloc_dangerous) |
11388 | (link_info, error_message, input_bfd, input_section, | |
11389 | (*parent)->address))) | |
11390 | goto error_return; | |
11391 | break; | |
11392 | case bfd_reloc_overflow: | |
11393 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
11394 | (link_info, NULL, |
11395 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
11396 | (*parent)->howto->name, (*parent)->addend, |
11397 | input_bfd, input_section, (*parent)->address))) | |
11398 | goto error_return; | |
11399 | break; | |
11400 | case bfd_reloc_outofrange: | |
11401 | default: | |
11402 | abort (); | |
11403 | break; | |
11404 | } | |
11405 | ||
11406 | } | |
11407 | } | |
11408 | } | |
11409 | if (reloc_vector != NULL) | |
11410 | free (reloc_vector); | |
11411 | return data; | |
11412 | ||
11413 | error_return: | |
11414 | if (reloc_vector != NULL) | |
11415 | free (reloc_vector); | |
11416 | return NULL; | |
11417 | } | |
11418 | \f | |
d5eaccd7 RS |
11419 | /* Allocate ABFD's target-dependent data. */ |
11420 | ||
11421 | bfd_boolean | |
11422 | _bfd_mips_elf_mkobject (bfd *abfd) | |
11423 | { | |
11424 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), | |
11425 | MIPS_ELF_TDATA); | |
11426 | } | |
11427 | ||
b49e97c9 TS |
11428 | /* Create a MIPS ELF linker hash table. */ |
11429 | ||
11430 | struct bfd_link_hash_table * | |
9719ad41 | 11431 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
11432 | { |
11433 | struct mips_elf_link_hash_table *ret; | |
11434 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
11435 | ||
9719ad41 RS |
11436 | ret = bfd_malloc (amt); |
11437 | if (ret == NULL) | |
b49e97c9 TS |
11438 | return NULL; |
11439 | ||
66eb6687 AM |
11440 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
11441 | mips_elf_link_hash_newfunc, | |
11442 | sizeof (struct mips_elf_link_hash_entry))) | |
b49e97c9 | 11443 | { |
e2d34d7d | 11444 | free (ret); |
b49e97c9 TS |
11445 | return NULL; |
11446 | } | |
11447 | ||
11448 | #if 0 | |
11449 | /* We no longer use this. */ | |
11450 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
11451 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
11452 | #endif | |
11453 | ret->procedure_count = 0; | |
11454 | ret->compact_rel_size = 0; | |
b34976b6 | 11455 | ret->use_rld_obj_head = FALSE; |
b49e97c9 | 11456 | ret->rld_value = 0; |
b34976b6 | 11457 | ret->mips16_stubs_seen = FALSE; |
861fb55a | 11458 | ret->use_plts_and_copy_relocs = FALSE; |
0a44bf69 | 11459 | ret->is_vxworks = FALSE; |
0e53d9da | 11460 | ret->small_data_overflow_reported = FALSE; |
0a44bf69 RS |
11461 | ret->srelbss = NULL; |
11462 | ret->sdynbss = NULL; | |
11463 | ret->srelplt = NULL; | |
11464 | ret->srelplt2 = NULL; | |
11465 | ret->sgotplt = NULL; | |
11466 | ret->splt = NULL; | |
4e41d0d7 | 11467 | ret->sstubs = NULL; |
a8028dd0 RS |
11468 | ret->sgot = NULL; |
11469 | ret->got_info = NULL; | |
0a44bf69 RS |
11470 | ret->plt_header_size = 0; |
11471 | ret->plt_entry_size = 0; | |
33bb52fb | 11472 | ret->lazy_stub_count = 0; |
5108fc1b | 11473 | ret->function_stub_size = 0; |
861fb55a DJ |
11474 | ret->strampoline = NULL; |
11475 | ret->la25_stubs = NULL; | |
11476 | ret->add_stub_section = NULL; | |
b49e97c9 TS |
11477 | |
11478 | return &ret->root.root; | |
11479 | } | |
0a44bf69 RS |
11480 | |
11481 | /* Likewise, but indicate that the target is VxWorks. */ | |
11482 | ||
11483 | struct bfd_link_hash_table * | |
11484 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
11485 | { | |
11486 | struct bfd_link_hash_table *ret; | |
11487 | ||
11488 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
11489 | if (ret) | |
11490 | { | |
11491 | struct mips_elf_link_hash_table *htab; | |
11492 | ||
11493 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
11494 | htab->use_plts_and_copy_relocs = TRUE; |
11495 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
11496 | } |
11497 | return ret; | |
11498 | } | |
861fb55a DJ |
11499 | |
11500 | /* A function that the linker calls if we are allowed to use PLTs | |
11501 | and copy relocs. */ | |
11502 | ||
11503 | void | |
11504 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
11505 | { | |
11506 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
11507 | } | |
b49e97c9 TS |
11508 | \f |
11509 | /* We need to use a special link routine to handle the .reginfo and | |
11510 | the .mdebug sections. We need to merge all instances of these | |
11511 | sections together, not write them all out sequentially. */ | |
11512 | ||
b34976b6 | 11513 | bfd_boolean |
9719ad41 | 11514 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 11515 | { |
b49e97c9 TS |
11516 | asection *o; |
11517 | struct bfd_link_order *p; | |
11518 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
11519 | asection *rtproc_sec; | |
11520 | Elf32_RegInfo reginfo; | |
11521 | struct ecoff_debug_info debug; | |
861fb55a | 11522 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
11523 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
11524 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 11525 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 11526 | void *mdebug_handle = NULL; |
b49e97c9 TS |
11527 | asection *s; |
11528 | EXTR esym; | |
11529 | unsigned int i; | |
11530 | bfd_size_type amt; | |
0a44bf69 | 11531 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
11532 | |
11533 | static const char * const secname[] = | |
11534 | { | |
11535 | ".text", ".init", ".fini", ".data", | |
11536 | ".rodata", ".sdata", ".sbss", ".bss" | |
11537 | }; | |
11538 | static const int sc[] = | |
11539 | { | |
11540 | scText, scInit, scFini, scData, | |
11541 | scRData, scSData, scSBss, scBss | |
11542 | }; | |
11543 | ||
d4596a51 RS |
11544 | /* Sort the dynamic symbols so that those with GOT entries come after |
11545 | those without. */ | |
0a44bf69 | 11546 | htab = mips_elf_hash_table (info); |
d4596a51 RS |
11547 | if (!mips_elf_sort_hash_table (abfd, info)) |
11548 | return FALSE; | |
b49e97c9 | 11549 | |
861fb55a DJ |
11550 | /* Create any scheduled LA25 stubs. */ |
11551 | hti.info = info; | |
11552 | hti.output_bfd = abfd; | |
11553 | hti.error = FALSE; | |
11554 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
11555 | if (hti.error) | |
11556 | return FALSE; | |
11557 | ||
b49e97c9 TS |
11558 | /* Get a value for the GP register. */ |
11559 | if (elf_gp (abfd) == 0) | |
11560 | { | |
11561 | struct bfd_link_hash_entry *h; | |
11562 | ||
b34976b6 | 11563 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 11564 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
11565 | elf_gp (abfd) = (h->u.def.value |
11566 | + h->u.def.section->output_section->vma | |
11567 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
11568 | else if (htab->is_vxworks |
11569 | && (h = bfd_link_hash_lookup (info->hash, | |
11570 | "_GLOBAL_OFFSET_TABLE_", | |
11571 | FALSE, FALSE, TRUE)) | |
11572 | && h->type == bfd_link_hash_defined) | |
11573 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
11574 | + h->u.def.section->output_offset | |
11575 | + h->u.def.value); | |
1049f94e | 11576 | else if (info->relocatable) |
b49e97c9 TS |
11577 | { |
11578 | bfd_vma lo = MINUS_ONE; | |
11579 | ||
11580 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 11581 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
11582 | if (o->vma < lo |
11583 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
11584 | lo = o->vma; | |
11585 | ||
11586 | /* And calculate GP relative to that. */ | |
0a44bf69 | 11587 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
11588 | } |
11589 | else | |
11590 | { | |
11591 | /* If the relocate_section function needs to do a reloc | |
11592 | involving the GP value, it should make a reloc_dangerous | |
11593 | callback to warn that GP is not defined. */ | |
11594 | } | |
11595 | } | |
11596 | ||
11597 | /* Go through the sections and collect the .reginfo and .mdebug | |
11598 | information. */ | |
11599 | reginfo_sec = NULL; | |
11600 | mdebug_sec = NULL; | |
11601 | gptab_data_sec = NULL; | |
11602 | gptab_bss_sec = NULL; | |
9719ad41 | 11603 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
11604 | { |
11605 | if (strcmp (o->name, ".reginfo") == 0) | |
11606 | { | |
11607 | memset (®info, 0, sizeof reginfo); | |
11608 | ||
11609 | /* We have found the .reginfo section in the output file. | |
11610 | Look through all the link_orders comprising it and merge | |
11611 | the information together. */ | |
8423293d | 11612 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11613 | { |
11614 | asection *input_section; | |
11615 | bfd *input_bfd; | |
11616 | Elf32_External_RegInfo ext; | |
11617 | Elf32_RegInfo sub; | |
11618 | ||
11619 | if (p->type != bfd_indirect_link_order) | |
11620 | { | |
11621 | if (p->type == bfd_data_link_order) | |
11622 | continue; | |
11623 | abort (); | |
11624 | } | |
11625 | ||
11626 | input_section = p->u.indirect.section; | |
11627 | input_bfd = input_section->owner; | |
11628 | ||
b49e97c9 | 11629 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 11630 | &ext, 0, sizeof ext)) |
b34976b6 | 11631 | return FALSE; |
b49e97c9 TS |
11632 | |
11633 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
11634 | ||
11635 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
11636 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
11637 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
11638 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
11639 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
11640 | ||
11641 | /* ri_gp_value is set by the function | |
11642 | mips_elf32_section_processing when the section is | |
11643 | finally written out. */ | |
11644 | ||
11645 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11646 | elf_link_input_bfd ignores this section. */ | |
11647 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11648 | } | |
11649 | ||
11650 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 11651 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
11652 | |
11653 | /* Skip this section later on (I don't think this currently | |
11654 | matters, but someday it might). */ | |
8423293d | 11655 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11656 | |
11657 | reginfo_sec = o; | |
11658 | } | |
11659 | ||
11660 | if (strcmp (o->name, ".mdebug") == 0) | |
11661 | { | |
11662 | struct extsym_info einfo; | |
11663 | bfd_vma last; | |
11664 | ||
11665 | /* We have found the .mdebug section in the output file. | |
11666 | Look through all the link_orders comprising it and merge | |
11667 | the information together. */ | |
11668 | symhdr->magic = swap->sym_magic; | |
11669 | /* FIXME: What should the version stamp be? */ | |
11670 | symhdr->vstamp = 0; | |
11671 | symhdr->ilineMax = 0; | |
11672 | symhdr->cbLine = 0; | |
11673 | symhdr->idnMax = 0; | |
11674 | symhdr->ipdMax = 0; | |
11675 | symhdr->isymMax = 0; | |
11676 | symhdr->ioptMax = 0; | |
11677 | symhdr->iauxMax = 0; | |
11678 | symhdr->issMax = 0; | |
11679 | symhdr->issExtMax = 0; | |
11680 | symhdr->ifdMax = 0; | |
11681 | symhdr->crfd = 0; | |
11682 | symhdr->iextMax = 0; | |
11683 | ||
11684 | /* We accumulate the debugging information itself in the | |
11685 | debug_info structure. */ | |
11686 | debug.line = NULL; | |
11687 | debug.external_dnr = NULL; | |
11688 | debug.external_pdr = NULL; | |
11689 | debug.external_sym = NULL; | |
11690 | debug.external_opt = NULL; | |
11691 | debug.external_aux = NULL; | |
11692 | debug.ss = NULL; | |
11693 | debug.ssext = debug.ssext_end = NULL; | |
11694 | debug.external_fdr = NULL; | |
11695 | debug.external_rfd = NULL; | |
11696 | debug.external_ext = debug.external_ext_end = NULL; | |
11697 | ||
11698 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 11699 | if (mdebug_handle == NULL) |
b34976b6 | 11700 | return FALSE; |
b49e97c9 TS |
11701 | |
11702 | esym.jmptbl = 0; | |
11703 | esym.cobol_main = 0; | |
11704 | esym.weakext = 0; | |
11705 | esym.reserved = 0; | |
11706 | esym.ifd = ifdNil; | |
11707 | esym.asym.iss = issNil; | |
11708 | esym.asym.st = stLocal; | |
11709 | esym.asym.reserved = 0; | |
11710 | esym.asym.index = indexNil; | |
11711 | last = 0; | |
11712 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
11713 | { | |
11714 | esym.asym.sc = sc[i]; | |
11715 | s = bfd_get_section_by_name (abfd, secname[i]); | |
11716 | if (s != NULL) | |
11717 | { | |
11718 | esym.asym.value = s->vma; | |
eea6121a | 11719 | last = s->vma + s->size; |
b49e97c9 TS |
11720 | } |
11721 | else | |
11722 | esym.asym.value = last; | |
11723 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
11724 | secname[i], &esym)) | |
b34976b6 | 11725 | return FALSE; |
b49e97c9 TS |
11726 | } |
11727 | ||
8423293d | 11728 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11729 | { |
11730 | asection *input_section; | |
11731 | bfd *input_bfd; | |
11732 | const struct ecoff_debug_swap *input_swap; | |
11733 | struct ecoff_debug_info input_debug; | |
11734 | char *eraw_src; | |
11735 | char *eraw_end; | |
11736 | ||
11737 | if (p->type != bfd_indirect_link_order) | |
11738 | { | |
11739 | if (p->type == bfd_data_link_order) | |
11740 | continue; | |
11741 | abort (); | |
11742 | } | |
11743 | ||
11744 | input_section = p->u.indirect.section; | |
11745 | input_bfd = input_section->owner; | |
11746 | ||
d5eaccd7 | 11747 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
11748 | { |
11749 | /* I don't know what a non MIPS ELF bfd would be | |
11750 | doing with a .mdebug section, but I don't really | |
11751 | want to deal with it. */ | |
11752 | continue; | |
11753 | } | |
11754 | ||
11755 | input_swap = (get_elf_backend_data (input_bfd) | |
11756 | ->elf_backend_ecoff_debug_swap); | |
11757 | ||
eea6121a | 11758 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
11759 | |
11760 | /* The ECOFF linking code expects that we have already | |
11761 | read in the debugging information and set up an | |
11762 | ecoff_debug_info structure, so we do that now. */ | |
11763 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
11764 | &input_debug)) | |
b34976b6 | 11765 | return FALSE; |
b49e97c9 TS |
11766 | |
11767 | if (! (bfd_ecoff_debug_accumulate | |
11768 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
11769 | &input_debug, input_swap, info))) | |
b34976b6 | 11770 | return FALSE; |
b49e97c9 TS |
11771 | |
11772 | /* Loop through the external symbols. For each one with | |
11773 | interesting information, try to find the symbol in | |
11774 | the linker global hash table and save the information | |
11775 | for the output external symbols. */ | |
11776 | eraw_src = input_debug.external_ext; | |
11777 | eraw_end = (eraw_src | |
11778 | + (input_debug.symbolic_header.iextMax | |
11779 | * input_swap->external_ext_size)); | |
11780 | for (; | |
11781 | eraw_src < eraw_end; | |
11782 | eraw_src += input_swap->external_ext_size) | |
11783 | { | |
11784 | EXTR ext; | |
11785 | const char *name; | |
11786 | struct mips_elf_link_hash_entry *h; | |
11787 | ||
9719ad41 | 11788 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
11789 | if (ext.asym.sc == scNil |
11790 | || ext.asym.sc == scUndefined | |
11791 | || ext.asym.sc == scSUndefined) | |
11792 | continue; | |
11793 | ||
11794 | name = input_debug.ssext + ext.asym.iss; | |
11795 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 11796 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
11797 | if (h == NULL || h->esym.ifd != -2) |
11798 | continue; | |
11799 | ||
11800 | if (ext.ifd != -1) | |
11801 | { | |
11802 | BFD_ASSERT (ext.ifd | |
11803 | < input_debug.symbolic_header.ifdMax); | |
11804 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
11805 | } | |
11806 | ||
11807 | h->esym = ext; | |
11808 | } | |
11809 | ||
11810 | /* Free up the information we just read. */ | |
11811 | free (input_debug.line); | |
11812 | free (input_debug.external_dnr); | |
11813 | free (input_debug.external_pdr); | |
11814 | free (input_debug.external_sym); | |
11815 | free (input_debug.external_opt); | |
11816 | free (input_debug.external_aux); | |
11817 | free (input_debug.ss); | |
11818 | free (input_debug.ssext); | |
11819 | free (input_debug.external_fdr); | |
11820 | free (input_debug.external_rfd); | |
11821 | free (input_debug.external_ext); | |
11822 | ||
11823 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11824 | elf_link_input_bfd ignores this section. */ | |
11825 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11826 | } | |
11827 | ||
11828 | if (SGI_COMPAT (abfd) && info->shared) | |
11829 | { | |
11830 | /* Create .rtproc section. */ | |
11831 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
11832 | if (rtproc_sec == NULL) | |
11833 | { | |
11834 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
11835 | | SEC_LINKER_CREATED | SEC_READONLY); | |
11836 | ||
3496cb2a L |
11837 | rtproc_sec = bfd_make_section_with_flags (abfd, |
11838 | ".rtproc", | |
11839 | flags); | |
b49e97c9 | 11840 | if (rtproc_sec == NULL |
b49e97c9 | 11841 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 11842 | return FALSE; |
b49e97c9 TS |
11843 | } |
11844 | ||
11845 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
11846 | info, rtproc_sec, | |
11847 | &debug)) | |
b34976b6 | 11848 | return FALSE; |
b49e97c9 TS |
11849 | } |
11850 | ||
11851 | /* Build the external symbol information. */ | |
11852 | einfo.abfd = abfd; | |
11853 | einfo.info = info; | |
11854 | einfo.debug = &debug; | |
11855 | einfo.swap = swap; | |
b34976b6 | 11856 | einfo.failed = FALSE; |
b49e97c9 | 11857 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 11858 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 11859 | if (einfo.failed) |
b34976b6 | 11860 | return FALSE; |
b49e97c9 TS |
11861 | |
11862 | /* Set the size of the .mdebug section. */ | |
eea6121a | 11863 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
11864 | |
11865 | /* Skip this section later on (I don't think this currently | |
11866 | matters, but someday it might). */ | |
8423293d | 11867 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11868 | |
11869 | mdebug_sec = o; | |
11870 | } | |
11871 | ||
0112cd26 | 11872 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
11873 | { |
11874 | const char *subname; | |
11875 | unsigned int c; | |
11876 | Elf32_gptab *tab; | |
11877 | Elf32_External_gptab *ext_tab; | |
11878 | unsigned int j; | |
11879 | ||
11880 | /* The .gptab.sdata and .gptab.sbss sections hold | |
11881 | information describing how the small data area would | |
11882 | change depending upon the -G switch. These sections | |
11883 | not used in executables files. */ | |
1049f94e | 11884 | if (! info->relocatable) |
b49e97c9 | 11885 | { |
8423293d | 11886 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11887 | { |
11888 | asection *input_section; | |
11889 | ||
11890 | if (p->type != bfd_indirect_link_order) | |
11891 | { | |
11892 | if (p->type == bfd_data_link_order) | |
11893 | continue; | |
11894 | abort (); | |
11895 | } | |
11896 | ||
11897 | input_section = p->u.indirect.section; | |
11898 | ||
11899 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11900 | elf_link_input_bfd ignores this section. */ | |
11901 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11902 | } | |
11903 | ||
11904 | /* Skip this section later on (I don't think this | |
11905 | currently matters, but someday it might). */ | |
8423293d | 11906 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11907 | |
11908 | /* Really remove the section. */ | |
5daa8fe7 | 11909 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
11910 | --abfd->section_count; |
11911 | ||
11912 | continue; | |
11913 | } | |
11914 | ||
11915 | /* There is one gptab for initialized data, and one for | |
11916 | uninitialized data. */ | |
11917 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
11918 | gptab_data_sec = o; | |
11919 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
11920 | gptab_bss_sec = o; | |
11921 | else | |
11922 | { | |
11923 | (*_bfd_error_handler) | |
11924 | (_("%s: illegal section name `%s'"), | |
11925 | bfd_get_filename (abfd), o->name); | |
11926 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 11927 | return FALSE; |
b49e97c9 TS |
11928 | } |
11929 | ||
11930 | /* The linker script always combines .gptab.data and | |
11931 | .gptab.sdata into .gptab.sdata, and likewise for | |
11932 | .gptab.bss and .gptab.sbss. It is possible that there is | |
11933 | no .sdata or .sbss section in the output file, in which | |
11934 | case we must change the name of the output section. */ | |
11935 | subname = o->name + sizeof ".gptab" - 1; | |
11936 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
11937 | { | |
11938 | if (o == gptab_data_sec) | |
11939 | o->name = ".gptab.data"; | |
11940 | else | |
11941 | o->name = ".gptab.bss"; | |
11942 | subname = o->name + sizeof ".gptab" - 1; | |
11943 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
11944 | } | |
11945 | ||
11946 | /* Set up the first entry. */ | |
11947 | c = 1; | |
11948 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 11949 | tab = bfd_malloc (amt); |
b49e97c9 | 11950 | if (tab == NULL) |
b34976b6 | 11951 | return FALSE; |
b49e97c9 TS |
11952 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
11953 | tab[0].gt_header.gt_unused = 0; | |
11954 | ||
11955 | /* Combine the input sections. */ | |
8423293d | 11956 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11957 | { |
11958 | asection *input_section; | |
11959 | bfd *input_bfd; | |
11960 | bfd_size_type size; | |
11961 | unsigned long last; | |
11962 | bfd_size_type gpentry; | |
11963 | ||
11964 | if (p->type != bfd_indirect_link_order) | |
11965 | { | |
11966 | if (p->type == bfd_data_link_order) | |
11967 | continue; | |
11968 | abort (); | |
11969 | } | |
11970 | ||
11971 | input_section = p->u.indirect.section; | |
11972 | input_bfd = input_section->owner; | |
11973 | ||
11974 | /* Combine the gptab entries for this input section one | |
11975 | by one. We know that the input gptab entries are | |
11976 | sorted by ascending -G value. */ | |
eea6121a | 11977 | size = input_section->size; |
b49e97c9 TS |
11978 | last = 0; |
11979 | for (gpentry = sizeof (Elf32_External_gptab); | |
11980 | gpentry < size; | |
11981 | gpentry += sizeof (Elf32_External_gptab)) | |
11982 | { | |
11983 | Elf32_External_gptab ext_gptab; | |
11984 | Elf32_gptab int_gptab; | |
11985 | unsigned long val; | |
11986 | unsigned long add; | |
b34976b6 | 11987 | bfd_boolean exact; |
b49e97c9 TS |
11988 | unsigned int look; |
11989 | ||
11990 | if (! (bfd_get_section_contents | |
9719ad41 RS |
11991 | (input_bfd, input_section, &ext_gptab, gpentry, |
11992 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
11993 | { |
11994 | free (tab); | |
b34976b6 | 11995 | return FALSE; |
b49e97c9 TS |
11996 | } |
11997 | ||
11998 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
11999 | &int_gptab); | |
12000 | val = int_gptab.gt_entry.gt_g_value; | |
12001 | add = int_gptab.gt_entry.gt_bytes - last; | |
12002 | ||
b34976b6 | 12003 | exact = FALSE; |
b49e97c9 TS |
12004 | for (look = 1; look < c; look++) |
12005 | { | |
12006 | if (tab[look].gt_entry.gt_g_value >= val) | |
12007 | tab[look].gt_entry.gt_bytes += add; | |
12008 | ||
12009 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 12010 | exact = TRUE; |
b49e97c9 TS |
12011 | } |
12012 | ||
12013 | if (! exact) | |
12014 | { | |
12015 | Elf32_gptab *new_tab; | |
12016 | unsigned int max; | |
12017 | ||
12018 | /* We need a new table entry. */ | |
12019 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 12020 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
12021 | if (new_tab == NULL) |
12022 | { | |
12023 | free (tab); | |
b34976b6 | 12024 | return FALSE; |
b49e97c9 TS |
12025 | } |
12026 | tab = new_tab; | |
12027 | tab[c].gt_entry.gt_g_value = val; | |
12028 | tab[c].gt_entry.gt_bytes = add; | |
12029 | ||
12030 | /* Merge in the size for the next smallest -G | |
12031 | value, since that will be implied by this new | |
12032 | value. */ | |
12033 | max = 0; | |
12034 | for (look = 1; look < c; look++) | |
12035 | { | |
12036 | if (tab[look].gt_entry.gt_g_value < val | |
12037 | && (max == 0 | |
12038 | || (tab[look].gt_entry.gt_g_value | |
12039 | > tab[max].gt_entry.gt_g_value))) | |
12040 | max = look; | |
12041 | } | |
12042 | if (max != 0) | |
12043 | tab[c].gt_entry.gt_bytes += | |
12044 | tab[max].gt_entry.gt_bytes; | |
12045 | ||
12046 | ++c; | |
12047 | } | |
12048 | ||
12049 | last = int_gptab.gt_entry.gt_bytes; | |
12050 | } | |
12051 | ||
12052 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
12053 | elf_link_input_bfd ignores this section. */ | |
12054 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
12055 | } | |
12056 | ||
12057 | /* The table must be sorted by -G value. */ | |
12058 | if (c > 2) | |
12059 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
12060 | ||
12061 | /* Swap out the table. */ | |
12062 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 12063 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
12064 | if (ext_tab == NULL) |
12065 | { | |
12066 | free (tab); | |
b34976b6 | 12067 | return FALSE; |
b49e97c9 TS |
12068 | } |
12069 | ||
12070 | for (j = 0; j < c; j++) | |
12071 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
12072 | free (tab); | |
12073 | ||
eea6121a | 12074 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
12075 | o->contents = (bfd_byte *) ext_tab; |
12076 | ||
12077 | /* Skip this section later on (I don't think this currently | |
12078 | matters, but someday it might). */ | |
8423293d | 12079 | o->map_head.link_order = NULL; |
b49e97c9 TS |
12080 | } |
12081 | } | |
12082 | ||
12083 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 12084 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 12085 | return FALSE; |
b49e97c9 TS |
12086 | |
12087 | /* Now write out the computed sections. */ | |
12088 | ||
9719ad41 | 12089 | if (reginfo_sec != NULL) |
b49e97c9 TS |
12090 | { |
12091 | Elf32_External_RegInfo ext; | |
12092 | ||
12093 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 12094 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 12095 | return FALSE; |
b49e97c9 TS |
12096 | } |
12097 | ||
9719ad41 | 12098 | if (mdebug_sec != NULL) |
b49e97c9 TS |
12099 | { |
12100 | BFD_ASSERT (abfd->output_has_begun); | |
12101 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
12102 | swap, info, | |
12103 | mdebug_sec->filepos)) | |
b34976b6 | 12104 | return FALSE; |
b49e97c9 TS |
12105 | |
12106 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
12107 | } | |
12108 | ||
9719ad41 | 12109 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
12110 | { |
12111 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
12112 | gptab_data_sec->contents, | |
eea6121a | 12113 | 0, gptab_data_sec->size)) |
b34976b6 | 12114 | return FALSE; |
b49e97c9 TS |
12115 | } |
12116 | ||
9719ad41 | 12117 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
12118 | { |
12119 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
12120 | gptab_bss_sec->contents, | |
eea6121a | 12121 | 0, gptab_bss_sec->size)) |
b34976b6 | 12122 | return FALSE; |
b49e97c9 TS |
12123 | } |
12124 | ||
12125 | if (SGI_COMPAT (abfd)) | |
12126 | { | |
12127 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
12128 | if (rtproc_sec != NULL) | |
12129 | { | |
12130 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
12131 | rtproc_sec->contents, | |
eea6121a | 12132 | 0, rtproc_sec->size)) |
b34976b6 | 12133 | return FALSE; |
b49e97c9 TS |
12134 | } |
12135 | } | |
12136 | ||
b34976b6 | 12137 | return TRUE; |
b49e97c9 TS |
12138 | } |
12139 | \f | |
64543e1a RS |
12140 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
12141 | ||
12142 | struct mips_mach_extension { | |
12143 | unsigned long extension, base; | |
12144 | }; | |
12145 | ||
12146 | ||
12147 | /* An array describing how BFD machines relate to one another. The entries | |
12148 | are ordered topologically with MIPS I extensions listed last. */ | |
12149 | ||
12150 | static const struct mips_mach_extension mips_mach_extensions[] = { | |
6f179bd0 AN |
12151 | /* MIPS64r2 extensions. */ |
12152 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
12153 | ||
64543e1a | 12154 | /* MIPS64 extensions. */ |
5f74bc13 | 12155 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a | 12156 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
52b6b6b9 | 12157 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, |
64543e1a RS |
12158 | |
12159 | /* MIPS V extensions. */ | |
12160 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
12161 | ||
12162 | /* R10000 extensions. */ | |
12163 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
3aa3176b TS |
12164 | { bfd_mach_mips14000, bfd_mach_mips10000 }, |
12165 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
64543e1a RS |
12166 | |
12167 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
12168 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
12169 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
12170 | many libraries will just use the core ISA. Perhaps we could add | |
12171 | some sort of ASE flag if this ever proves a problem. */ | |
12172 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
12173 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
12174 | ||
12175 | /* MIPS IV extensions. */ | |
12176 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
12177 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
12178 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 12179 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 12180 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
12181 | |
12182 | /* VR4100 extensions. */ | |
12183 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
12184 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
12185 | ||
12186 | /* MIPS III extensions. */ | |
350cc38d MS |
12187 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
12188 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
12189 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
12190 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
12191 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
12192 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
12193 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
12194 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
12195 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
12196 | ||
12197 | /* MIPS32 extensions. */ | |
12198 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
12199 | ||
12200 | /* MIPS II extensions. */ | |
12201 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
12202 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
12203 | ||
12204 | /* MIPS I extensions. */ | |
12205 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
12206 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
12207 | }; | |
12208 | ||
12209 | ||
12210 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
12211 | ||
12212 | static bfd_boolean | |
9719ad41 | 12213 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
12214 | { |
12215 | size_t i; | |
12216 | ||
c5211a54 RS |
12217 | if (extension == base) |
12218 | return TRUE; | |
12219 | ||
12220 | if (base == bfd_mach_mipsisa32 | |
12221 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
12222 | return TRUE; | |
12223 | ||
12224 | if (base == bfd_mach_mipsisa32r2 | |
12225 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
12226 | return TRUE; | |
12227 | ||
12228 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 12229 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
12230 | { |
12231 | extension = mips_mach_extensions[i].base; | |
12232 | if (extension == base) | |
12233 | return TRUE; | |
12234 | } | |
64543e1a | 12235 | |
c5211a54 | 12236 | return FALSE; |
64543e1a RS |
12237 | } |
12238 | ||
12239 | ||
12240 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 12241 | |
b34976b6 | 12242 | static bfd_boolean |
9719ad41 | 12243 | mips_32bit_flags_p (flagword flags) |
00707a0e | 12244 | { |
64543e1a RS |
12245 | return ((flags & EF_MIPS_32BITMODE) != 0 |
12246 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
12247 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
12248 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
12249 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
12250 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
12251 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
12252 | } |
12253 | ||
64543e1a | 12254 | |
2cf19d5c JM |
12255 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
12256 | there are conflicting attributes. */ | |
12257 | static bfd_boolean | |
12258 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
12259 | { | |
12260 | obj_attribute *in_attr; | |
12261 | obj_attribute *out_attr; | |
12262 | ||
12263 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
12264 | { | |
12265 | /* This is the first object. Copy the attributes. */ | |
12266 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
12267 | ||
12268 | /* Use the Tag_null value to indicate the attributes have been | |
12269 | initialized. */ | |
12270 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
12271 | ||
12272 | return TRUE; | |
12273 | } | |
12274 | ||
12275 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
12276 | non-conflicting ones. */ | |
12277 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
12278 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
12279 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12280 | { | |
12281 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
12282 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
12283 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
12284 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
12285 | ; | |
42554f6a | 12286 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
12287 | _bfd_error_handler |
12288 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
12289 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
42554f6a | 12290 | else if (out_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
12291 | _bfd_error_handler |
12292 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
12293 | out_attr[Tag_GNU_MIPS_ABI_FP].i); | |
12294 | else | |
12295 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12296 | { | |
12297 | case 1: | |
12298 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12299 | { | |
12300 | case 2: | |
12301 | _bfd_error_handler | |
12302 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
12303 | obfd, ibfd); | |
51a0dd31 | 12304 | break; |
2cf19d5c JM |
12305 | |
12306 | case 3: | |
12307 | _bfd_error_handler | |
12308 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12309 | obfd, ibfd); | |
12310 | break; | |
12311 | ||
42554f6a TS |
12312 | case 4: |
12313 | _bfd_error_handler | |
12314 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
12315 | obfd, ibfd); | |
12316 | break; | |
12317 | ||
2cf19d5c JM |
12318 | default: |
12319 | abort (); | |
12320 | } | |
12321 | break; | |
12322 | ||
12323 | case 2: | |
12324 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12325 | { | |
12326 | case 1: | |
12327 | _bfd_error_handler | |
12328 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
12329 | ibfd, obfd); | |
51a0dd31 | 12330 | break; |
2cf19d5c JM |
12331 | |
12332 | case 3: | |
12333 | _bfd_error_handler | |
12334 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12335 | obfd, ibfd); | |
12336 | break; | |
12337 | ||
42554f6a TS |
12338 | case 4: |
12339 | _bfd_error_handler | |
12340 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
12341 | obfd, ibfd); | |
12342 | break; | |
12343 | ||
2cf19d5c JM |
12344 | default: |
12345 | abort (); | |
12346 | } | |
12347 | break; | |
12348 | ||
12349 | case 3: | |
12350 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12351 | { | |
12352 | case 1: | |
12353 | case 2: | |
42554f6a | 12354 | case 4: |
2cf19d5c JM |
12355 | _bfd_error_handler |
12356 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12357 | ibfd, obfd); | |
12358 | break; | |
12359 | ||
12360 | default: | |
12361 | abort (); | |
12362 | } | |
12363 | break; | |
12364 | ||
42554f6a TS |
12365 | case 4: |
12366 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12367 | { | |
12368 | case 1: | |
12369 | _bfd_error_handler | |
12370 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
12371 | ibfd, obfd); | |
12372 | break; | |
12373 | ||
12374 | case 2: | |
12375 | _bfd_error_handler | |
12376 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
12377 | ibfd, obfd); | |
12378 | break; | |
12379 | ||
12380 | case 3: | |
12381 | _bfd_error_handler | |
12382 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12383 | obfd, ibfd); | |
12384 | break; | |
12385 | ||
12386 | default: | |
12387 | abort (); | |
12388 | } | |
12389 | break; | |
12390 | ||
2cf19d5c JM |
12391 | default: |
12392 | abort (); | |
12393 | } | |
12394 | } | |
12395 | ||
12396 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
12397 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
12398 | ||
12399 | return TRUE; | |
12400 | } | |
12401 | ||
b49e97c9 TS |
12402 | /* Merge backend specific data from an object file to the output |
12403 | object file when linking. */ | |
12404 | ||
b34976b6 | 12405 | bfd_boolean |
9719ad41 | 12406 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
12407 | { |
12408 | flagword old_flags; | |
12409 | flagword new_flags; | |
b34976b6 AM |
12410 | bfd_boolean ok; |
12411 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
12412 | asection *sec; |
12413 | ||
12414 | /* Check if we have the same endianess */ | |
82e51918 | 12415 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
12416 | { |
12417 | (*_bfd_error_handler) | |
d003868e AM |
12418 | (_("%B: endianness incompatible with that of the selected emulation"), |
12419 | ibfd); | |
aa701218 AO |
12420 | return FALSE; |
12421 | } | |
b49e97c9 | 12422 | |
d5eaccd7 | 12423 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 12424 | return TRUE; |
b49e97c9 | 12425 | |
aa701218 AO |
12426 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
12427 | { | |
12428 | (*_bfd_error_handler) | |
d003868e AM |
12429 | (_("%B: ABI is incompatible with that of the selected emulation"), |
12430 | ibfd); | |
aa701218 AO |
12431 | return FALSE; |
12432 | } | |
12433 | ||
2cf19d5c JM |
12434 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
12435 | return FALSE; | |
12436 | ||
b49e97c9 TS |
12437 | new_flags = elf_elfheader (ibfd)->e_flags; |
12438 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
12439 | old_flags = elf_elfheader (obfd)->e_flags; | |
12440 | ||
12441 | if (! elf_flags_init (obfd)) | |
12442 | { | |
b34976b6 | 12443 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
12444 | elf_elfheader (obfd)->e_flags = new_flags; |
12445 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
12446 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
12447 | ||
12448 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 TS |
12449 | && (bfd_get_arch_info (obfd)->the_default |
12450 | || mips_mach_extends_p (bfd_get_mach (obfd), | |
12451 | bfd_get_mach (ibfd)))) | |
b49e97c9 TS |
12452 | { |
12453 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
12454 | bfd_get_mach (ibfd))) | |
b34976b6 | 12455 | return FALSE; |
b49e97c9 TS |
12456 | } |
12457 | ||
b34976b6 | 12458 | return TRUE; |
b49e97c9 TS |
12459 | } |
12460 | ||
12461 | /* Check flag compatibility. */ | |
12462 | ||
12463 | new_flags &= ~EF_MIPS_NOREORDER; | |
12464 | old_flags &= ~EF_MIPS_NOREORDER; | |
12465 | ||
f4416af6 AO |
12466 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
12467 | doesn't seem to matter. */ | |
12468 | new_flags &= ~EF_MIPS_XGOT; | |
12469 | old_flags &= ~EF_MIPS_XGOT; | |
12470 | ||
98a8deaf RS |
12471 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
12472 | just be able to ignore this. */ | |
12473 | new_flags &= ~EF_MIPS_UCODE; | |
12474 | old_flags &= ~EF_MIPS_UCODE; | |
12475 | ||
861fb55a DJ |
12476 | /* DSOs should only be linked with CPIC code. */ |
12477 | if ((ibfd->flags & DYNAMIC) != 0) | |
12478 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
0a44bf69 | 12479 | |
b49e97c9 | 12480 | if (new_flags == old_flags) |
b34976b6 | 12481 | return TRUE; |
b49e97c9 TS |
12482 | |
12483 | /* Check to see if the input BFD actually contains any sections. | |
12484 | If not, its flags may not have been initialised either, but it cannot | |
12485 | actually cause any incompatibility. */ | |
12486 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
12487 | { | |
12488 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
12489 | which are automatically generated by gas. */ | |
12490 | if (strcmp (sec->name, ".reginfo") | |
12491 | && strcmp (sec->name, ".mdebug") | |
eea6121a | 12492 | && (sec->size != 0 |
d13d89fa NS |
12493 | || (strcmp (sec->name, ".text") |
12494 | && strcmp (sec->name, ".data") | |
12495 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 12496 | { |
b34976b6 | 12497 | null_input_bfd = FALSE; |
b49e97c9 TS |
12498 | break; |
12499 | } | |
12500 | } | |
12501 | if (null_input_bfd) | |
b34976b6 | 12502 | return TRUE; |
b49e97c9 | 12503 | |
b34976b6 | 12504 | ok = TRUE; |
b49e97c9 | 12505 | |
143d77c5 EC |
12506 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
12507 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 12508 | { |
b49e97c9 | 12509 | (*_bfd_error_handler) |
861fb55a | 12510 | (_("%B: warning: linking abicalls files with non-abicalls files"), |
d003868e | 12511 | ibfd); |
143d77c5 | 12512 | ok = TRUE; |
b49e97c9 TS |
12513 | } |
12514 | ||
143d77c5 EC |
12515 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
12516 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
12517 | if (! (new_flags & EF_MIPS_PIC)) | |
12518 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
12519 | ||
12520 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
12521 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 12522 | |
64543e1a RS |
12523 | /* Compare the ISAs. */ |
12524 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 12525 | { |
64543e1a | 12526 | (*_bfd_error_handler) |
d003868e AM |
12527 | (_("%B: linking 32-bit code with 64-bit code"), |
12528 | ibfd); | |
64543e1a RS |
12529 | ok = FALSE; |
12530 | } | |
12531 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
12532 | { | |
12533 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
12534 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 12535 | { |
64543e1a RS |
12536 | /* Copy the architecture info from IBFD to OBFD. Also copy |
12537 | the 32-bit flag (if set) so that we continue to recognise | |
12538 | OBFD as a 32-bit binary. */ | |
12539 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
12540 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
12541 | elf_elfheader (obfd)->e_flags | |
12542 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
12543 | ||
12544 | /* Copy across the ABI flags if OBFD doesn't use them | |
12545 | and if that was what caused us to treat IBFD as 32-bit. */ | |
12546 | if ((old_flags & EF_MIPS_ABI) == 0 | |
12547 | && mips_32bit_flags_p (new_flags) | |
12548 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
12549 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
12550 | } |
12551 | else | |
12552 | { | |
64543e1a | 12553 | /* The ISAs aren't compatible. */ |
b49e97c9 | 12554 | (*_bfd_error_handler) |
d003868e AM |
12555 | (_("%B: linking %s module with previous %s modules"), |
12556 | ibfd, | |
64543e1a RS |
12557 | bfd_printable_name (ibfd), |
12558 | bfd_printable_name (obfd)); | |
b34976b6 | 12559 | ok = FALSE; |
b49e97c9 | 12560 | } |
b49e97c9 TS |
12561 | } |
12562 | ||
64543e1a RS |
12563 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
12564 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
12565 | ||
12566 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
12567 | does set EI_CLASS differently from any 32-bit ABI. */ |
12568 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
12569 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
12570 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
12571 | { | |
12572 | /* Only error if both are set (to different values). */ | |
12573 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
12574 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
12575 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
12576 | { | |
12577 | (*_bfd_error_handler) | |
d003868e AM |
12578 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
12579 | ibfd, | |
b49e97c9 TS |
12580 | elf_mips_abi_name (ibfd), |
12581 | elf_mips_abi_name (obfd)); | |
b34976b6 | 12582 | ok = FALSE; |
b49e97c9 TS |
12583 | } |
12584 | new_flags &= ~EF_MIPS_ABI; | |
12585 | old_flags &= ~EF_MIPS_ABI; | |
12586 | } | |
12587 | ||
fb39dac1 RS |
12588 | /* For now, allow arbitrary mixing of ASEs (retain the union). */ |
12589 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
12590 | { | |
12591 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
12592 | ||
12593 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
12594 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
12595 | } | |
12596 | ||
b49e97c9 TS |
12597 | /* Warn about any other mismatches */ |
12598 | if (new_flags != old_flags) | |
12599 | { | |
12600 | (*_bfd_error_handler) | |
d003868e AM |
12601 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
12602 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 12603 | (unsigned long) old_flags); |
b34976b6 | 12604 | ok = FALSE; |
b49e97c9 TS |
12605 | } |
12606 | ||
12607 | if (! ok) | |
12608 | { | |
12609 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 12610 | return FALSE; |
b49e97c9 TS |
12611 | } |
12612 | ||
b34976b6 | 12613 | return TRUE; |
b49e97c9 TS |
12614 | } |
12615 | ||
12616 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
12617 | ||
b34976b6 | 12618 | bfd_boolean |
9719ad41 | 12619 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
12620 | { |
12621 | BFD_ASSERT (!elf_flags_init (abfd) | |
12622 | || elf_elfheader (abfd)->e_flags == flags); | |
12623 | ||
12624 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
12625 | elf_flags_init (abfd) = TRUE; |
12626 | return TRUE; | |
b49e97c9 TS |
12627 | } |
12628 | ||
ad9563d6 CM |
12629 | char * |
12630 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
12631 | { | |
12632 | switch (dtag) | |
12633 | { | |
12634 | default: return ""; | |
12635 | case DT_MIPS_RLD_VERSION: | |
12636 | return "MIPS_RLD_VERSION"; | |
12637 | case DT_MIPS_TIME_STAMP: | |
12638 | return "MIPS_TIME_STAMP"; | |
12639 | case DT_MIPS_ICHECKSUM: | |
12640 | return "MIPS_ICHECKSUM"; | |
12641 | case DT_MIPS_IVERSION: | |
12642 | return "MIPS_IVERSION"; | |
12643 | case DT_MIPS_FLAGS: | |
12644 | return "MIPS_FLAGS"; | |
12645 | case DT_MIPS_BASE_ADDRESS: | |
12646 | return "MIPS_BASE_ADDRESS"; | |
12647 | case DT_MIPS_MSYM: | |
12648 | return "MIPS_MSYM"; | |
12649 | case DT_MIPS_CONFLICT: | |
12650 | return "MIPS_CONFLICT"; | |
12651 | case DT_MIPS_LIBLIST: | |
12652 | return "MIPS_LIBLIST"; | |
12653 | case DT_MIPS_LOCAL_GOTNO: | |
12654 | return "MIPS_LOCAL_GOTNO"; | |
12655 | case DT_MIPS_CONFLICTNO: | |
12656 | return "MIPS_CONFLICTNO"; | |
12657 | case DT_MIPS_LIBLISTNO: | |
12658 | return "MIPS_LIBLISTNO"; | |
12659 | case DT_MIPS_SYMTABNO: | |
12660 | return "MIPS_SYMTABNO"; | |
12661 | case DT_MIPS_UNREFEXTNO: | |
12662 | return "MIPS_UNREFEXTNO"; | |
12663 | case DT_MIPS_GOTSYM: | |
12664 | return "MIPS_GOTSYM"; | |
12665 | case DT_MIPS_HIPAGENO: | |
12666 | return "MIPS_HIPAGENO"; | |
12667 | case DT_MIPS_RLD_MAP: | |
12668 | return "MIPS_RLD_MAP"; | |
12669 | case DT_MIPS_DELTA_CLASS: | |
12670 | return "MIPS_DELTA_CLASS"; | |
12671 | case DT_MIPS_DELTA_CLASS_NO: | |
12672 | return "MIPS_DELTA_CLASS_NO"; | |
12673 | case DT_MIPS_DELTA_INSTANCE: | |
12674 | return "MIPS_DELTA_INSTANCE"; | |
12675 | case DT_MIPS_DELTA_INSTANCE_NO: | |
12676 | return "MIPS_DELTA_INSTANCE_NO"; | |
12677 | case DT_MIPS_DELTA_RELOC: | |
12678 | return "MIPS_DELTA_RELOC"; | |
12679 | case DT_MIPS_DELTA_RELOC_NO: | |
12680 | return "MIPS_DELTA_RELOC_NO"; | |
12681 | case DT_MIPS_DELTA_SYM: | |
12682 | return "MIPS_DELTA_SYM"; | |
12683 | case DT_MIPS_DELTA_SYM_NO: | |
12684 | return "MIPS_DELTA_SYM_NO"; | |
12685 | case DT_MIPS_DELTA_CLASSSYM: | |
12686 | return "MIPS_DELTA_CLASSSYM"; | |
12687 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
12688 | return "MIPS_DELTA_CLASSSYM_NO"; | |
12689 | case DT_MIPS_CXX_FLAGS: | |
12690 | return "MIPS_CXX_FLAGS"; | |
12691 | case DT_MIPS_PIXIE_INIT: | |
12692 | return "MIPS_PIXIE_INIT"; | |
12693 | case DT_MIPS_SYMBOL_LIB: | |
12694 | return "MIPS_SYMBOL_LIB"; | |
12695 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
12696 | return "MIPS_LOCALPAGE_GOTIDX"; | |
12697 | case DT_MIPS_LOCAL_GOTIDX: | |
12698 | return "MIPS_LOCAL_GOTIDX"; | |
12699 | case DT_MIPS_HIDDEN_GOTIDX: | |
12700 | return "MIPS_HIDDEN_GOTIDX"; | |
12701 | case DT_MIPS_PROTECTED_GOTIDX: | |
12702 | return "MIPS_PROTECTED_GOT_IDX"; | |
12703 | case DT_MIPS_OPTIONS: | |
12704 | return "MIPS_OPTIONS"; | |
12705 | case DT_MIPS_INTERFACE: | |
12706 | return "MIPS_INTERFACE"; | |
12707 | case DT_MIPS_DYNSTR_ALIGN: | |
12708 | return "DT_MIPS_DYNSTR_ALIGN"; | |
12709 | case DT_MIPS_INTERFACE_SIZE: | |
12710 | return "DT_MIPS_INTERFACE_SIZE"; | |
12711 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
12712 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
12713 | case DT_MIPS_PERF_SUFFIX: | |
12714 | return "DT_MIPS_PERF_SUFFIX"; | |
12715 | case DT_MIPS_COMPACT_SIZE: | |
12716 | return "DT_MIPS_COMPACT_SIZE"; | |
12717 | case DT_MIPS_GP_VALUE: | |
12718 | return "DT_MIPS_GP_VALUE"; | |
12719 | case DT_MIPS_AUX_DYNAMIC: | |
12720 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
12721 | case DT_MIPS_PLTGOT: |
12722 | return "DT_MIPS_PLTGOT"; | |
12723 | case DT_MIPS_RWPLT: | |
12724 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
12725 | } |
12726 | } | |
12727 | ||
b34976b6 | 12728 | bfd_boolean |
9719ad41 | 12729 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 12730 | { |
9719ad41 | 12731 | FILE *file = ptr; |
b49e97c9 TS |
12732 | |
12733 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
12734 | ||
12735 | /* Print normal ELF private data. */ | |
12736 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
12737 | ||
12738 | /* xgettext:c-format */ | |
12739 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
12740 | ||
12741 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
12742 | fprintf (file, _(" [abi=O32]")); | |
12743 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
12744 | fprintf (file, _(" [abi=O64]")); | |
12745 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
12746 | fprintf (file, _(" [abi=EABI32]")); | |
12747 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
12748 | fprintf (file, _(" [abi=EABI64]")); | |
12749 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
12750 | fprintf (file, _(" [abi unknown]")); | |
12751 | else if (ABI_N32_P (abfd)) | |
12752 | fprintf (file, _(" [abi=N32]")); | |
12753 | else if (ABI_64_P (abfd)) | |
12754 | fprintf (file, _(" [abi=64]")); | |
12755 | else | |
12756 | fprintf (file, _(" [no abi set]")); | |
12757 | ||
12758 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 12759 | fprintf (file, " [mips1]"); |
b49e97c9 | 12760 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 12761 | fprintf (file, " [mips2]"); |
b49e97c9 | 12762 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 12763 | fprintf (file, " [mips3]"); |
b49e97c9 | 12764 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 12765 | fprintf (file, " [mips4]"); |
b49e97c9 | 12766 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 12767 | fprintf (file, " [mips5]"); |
b49e97c9 | 12768 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 12769 | fprintf (file, " [mips32]"); |
b49e97c9 | 12770 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 12771 | fprintf (file, " [mips64]"); |
af7ee8bf | 12772 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 12773 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 12774 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 12775 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
12776 | else |
12777 | fprintf (file, _(" [unknown ISA]")); | |
12778 | ||
40d32fc6 | 12779 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 12780 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
12781 | |
12782 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 12783 | fprintf (file, " [mips16]"); |
40d32fc6 | 12784 | |
b49e97c9 | 12785 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 12786 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
12787 | else |
12788 | fprintf (file, _(" [not 32bitmode]")); | |
12789 | ||
c0e3f241 | 12790 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 12791 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
12792 | |
12793 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 12794 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
12795 | |
12796 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 12797 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
12798 | |
12799 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 12800 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
12801 | |
12802 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 12803 | fprintf (file, " [UCODE]"); |
c0e3f241 | 12804 | |
b49e97c9 TS |
12805 | fputc ('\n', file); |
12806 | ||
b34976b6 | 12807 | return TRUE; |
b49e97c9 | 12808 | } |
2f89ff8d | 12809 | |
b35d266b | 12810 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 12811 | { |
0112cd26 NC |
12812 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
12813 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12814 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
12815 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12816 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12817 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
12818 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 12819 | }; |
5e2b0d47 | 12820 | |
8992f0d7 TS |
12821 | /* Merge non visibility st_other attributes. Ensure that the |
12822 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
12823 | definiton of the symbol. */ | |
5e2b0d47 NC |
12824 | void |
12825 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
12826 | const Elf_Internal_Sym *isym, | |
12827 | bfd_boolean definition, | |
12828 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
12829 | { | |
8992f0d7 TS |
12830 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
12831 | { | |
12832 | unsigned char other; | |
12833 | ||
12834 | other = (definition ? isym->st_other : h->other); | |
12835 | other &= ~ELF_ST_VISIBILITY (-1); | |
12836 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
12837 | } | |
12838 | ||
12839 | if (!definition | |
5e2b0d47 NC |
12840 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
12841 | h->other |= STO_OPTIONAL; | |
12842 | } | |
12ac1cf5 NC |
12843 | |
12844 | /* Decide whether an undefined symbol is special and can be ignored. | |
12845 | This is the case for OPTIONAL symbols on IRIX. */ | |
12846 | bfd_boolean | |
12847 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
12848 | { | |
12849 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
12850 | } | |
e0764319 NC |
12851 | |
12852 | bfd_boolean | |
12853 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
12854 | { | |
12855 | return (sym->st_shndx == SHN_COMMON | |
12856 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
12857 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
12858 | } | |
861fb55a DJ |
12859 | |
12860 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
12861 | or (bfd_vma) -1 if it should not be included. */ | |
12862 | ||
12863 | bfd_vma | |
12864 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
12865 | const arelent *rel ATTRIBUTE_UNUSED) | |
12866 | { | |
12867 | return (plt->vma | |
12868 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
12869 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
12870 | } | |
12871 | ||
12872 | void | |
12873 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
12874 | { | |
12875 | struct mips_elf_link_hash_table *htab; | |
12876 | Elf_Internal_Ehdr *i_ehdrp; | |
12877 | ||
12878 | i_ehdrp = elf_elfheader (abfd); | |
12879 | if (link_info) | |
12880 | { | |
12881 | htab = mips_elf_hash_table (link_info); | |
12882 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) | |
12883 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
12884 | } | |
12885 | } |