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, |
4dfe6ac6 | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 | ||
91d6fa6a NC |
180 | struct mips_elf_bfd2got_hash |
181 | { | |
f4416af6 AO |
182 | bfd *bfd; |
183 | struct mips_got_info *g; | |
184 | }; | |
185 | ||
186 | /* Structure passed when traversing the bfd2got hash table, used to | |
187 | create and merge bfd's gots. */ | |
188 | ||
189 | struct mips_elf_got_per_bfd_arg | |
190 | { | |
191 | /* A hashtable that maps bfds to gots. */ | |
192 | htab_t bfd2got; | |
193 | /* The output bfd. */ | |
194 | bfd *obfd; | |
195 | /* The link information. */ | |
196 | struct bfd_link_info *info; | |
197 | /* A pointer to the primary got, i.e., the one that's going to get | |
198 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
199 | DT_MIPS_GOTSYM. */ | |
200 | struct mips_got_info *primary; | |
201 | /* A non-primary got we're trying to merge with other input bfd's | |
202 | gots. */ | |
203 | struct mips_got_info *current; | |
204 | /* The maximum number of got entries that can be addressed with a | |
205 | 16-bit offset. */ | |
206 | unsigned int max_count; | |
c224138d RS |
207 | /* The maximum number of page entries needed by each got. */ |
208 | unsigned int max_pages; | |
0f20cc35 DJ |
209 | /* The total number of global entries which will live in the |
210 | primary got and be automatically relocated. This includes | |
211 | those not referenced by the primary GOT but included in | |
212 | the "master" GOT. */ | |
213 | unsigned int global_count; | |
f4416af6 AO |
214 | }; |
215 | ||
216 | /* Another structure used to pass arguments for got entries traversal. */ | |
217 | ||
218 | struct mips_elf_set_global_got_offset_arg | |
219 | { | |
220 | struct mips_got_info *g; | |
221 | int value; | |
222 | unsigned int needed_relocs; | |
223 | struct bfd_link_info *info; | |
b49e97c9 TS |
224 | }; |
225 | ||
0f20cc35 DJ |
226 | /* A structure used to count TLS relocations or GOT entries, for GOT |
227 | entry or ELF symbol table traversal. */ | |
228 | ||
229 | struct mips_elf_count_tls_arg | |
230 | { | |
231 | struct bfd_link_info *info; | |
232 | unsigned int needed; | |
233 | }; | |
234 | ||
f0abc2a1 AM |
235 | struct _mips_elf_section_data |
236 | { | |
237 | struct bfd_elf_section_data elf; | |
238 | union | |
239 | { | |
f0abc2a1 AM |
240 | bfd_byte *tdata; |
241 | } u; | |
242 | }; | |
243 | ||
244 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 245 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 246 | |
d5eaccd7 RS |
247 | #define is_mips_elf(bfd) \ |
248 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
249 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 250 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 251 | |
634835ae RS |
252 | /* The ABI says that every symbol used by dynamic relocations must have |
253 | a global GOT entry. Among other things, this provides the dynamic | |
254 | linker with a free, directly-indexed cache. The GOT can therefore | |
255 | contain symbols that are not referenced by GOT relocations themselves | |
256 | (in other words, it may have symbols that are not referenced by things | |
257 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
258 | ||
259 | GOT relocations are less likely to overflow if we put the associated | |
260 | GOT entries towards the beginning. We therefore divide the global | |
261 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
262 | the first area can be used for both dynamic relocations and GP-relative | |
263 | accesses, while those in the "reloc-only" area are for dynamic | |
264 | relocations only. | |
265 | ||
266 | These GGA_* ("Global GOT Area") values are organised so that lower | |
267 | values are more general than higher values. Also, non-GGA_NONE | |
268 | values are ordered by the position of the area in the GOT. */ | |
269 | #define GGA_NORMAL 0 | |
270 | #define GGA_RELOC_ONLY 1 | |
271 | #define GGA_NONE 2 | |
272 | ||
861fb55a DJ |
273 | /* Information about a non-PIC interface to a PIC function. There are |
274 | two ways of creating these interfaces. The first is to add: | |
275 | ||
276 | lui $25,%hi(func) | |
277 | addiu $25,$25,%lo(func) | |
278 | ||
279 | immediately before a PIC function "func". The second is to add: | |
280 | ||
281 | lui $25,%hi(func) | |
282 | j func | |
283 | addiu $25,$25,%lo(func) | |
284 | ||
285 | to a separate trampoline section. | |
286 | ||
287 | Stubs of the first kind go in a new section immediately before the | |
288 | target function. Stubs of the second kind go in a single section | |
289 | pointed to by the hash table's "strampoline" field. */ | |
290 | struct mips_elf_la25_stub { | |
291 | /* The generated section that contains this stub. */ | |
292 | asection *stub_section; | |
293 | ||
294 | /* The offset of the stub from the start of STUB_SECTION. */ | |
295 | bfd_vma offset; | |
296 | ||
297 | /* One symbol for the original function. Its location is available | |
298 | in H->root.root.u.def. */ | |
299 | struct mips_elf_link_hash_entry *h; | |
300 | }; | |
301 | ||
302 | /* Macros for populating a mips_elf_la25_stub. */ | |
303 | ||
304 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
305 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
306 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
307 | ||
b49e97c9 TS |
308 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
309 | the dynamic symbols. */ | |
310 | ||
311 | struct mips_elf_hash_sort_data | |
312 | { | |
313 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
314 | index. */ | |
315 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
316 | /* The least dynamic symbol table index corresponding to a non-TLS |
317 | symbol with a GOT entry. */ | |
b49e97c9 | 318 | long min_got_dynindx; |
f4416af6 AO |
319 | /* The greatest dynamic symbol table index corresponding to a symbol |
320 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 321 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 322 | long max_unref_got_dynindx; |
b49e97c9 TS |
323 | /* The greatest dynamic symbol table index not corresponding to a |
324 | symbol without a GOT entry. */ | |
325 | long max_non_got_dynindx; | |
326 | }; | |
327 | ||
328 | /* The MIPS ELF linker needs additional information for each symbol in | |
329 | the global hash table. */ | |
330 | ||
331 | struct mips_elf_link_hash_entry | |
332 | { | |
333 | struct elf_link_hash_entry root; | |
334 | ||
335 | /* External symbol information. */ | |
336 | EXTR esym; | |
337 | ||
861fb55a DJ |
338 | /* The la25 stub we have created for ths symbol, if any. */ |
339 | struct mips_elf_la25_stub *la25_stub; | |
340 | ||
b49e97c9 TS |
341 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
342 | this symbol. */ | |
343 | unsigned int possibly_dynamic_relocs; | |
344 | ||
b49e97c9 TS |
345 | /* If there is a stub that 32 bit functions should use to call this |
346 | 16 bit function, this points to the section containing the stub. */ | |
347 | asection *fn_stub; | |
348 | ||
b49e97c9 TS |
349 | /* If there is a stub that 16 bit functions should use to call this |
350 | 32 bit function, this points to the section containing the stub. */ | |
351 | asection *call_stub; | |
352 | ||
353 | /* This is like the call_stub field, but it is used if the function | |
354 | being called returns a floating point value. */ | |
355 | asection *call_fp_stub; | |
7c5fcef7 | 356 | |
0f20cc35 DJ |
357 | #define GOT_NORMAL 0 |
358 | #define GOT_TLS_GD 1 | |
359 | #define GOT_TLS_LDM 2 | |
360 | #define GOT_TLS_IE 4 | |
361 | #define GOT_TLS_OFFSET_DONE 0x40 | |
362 | #define GOT_TLS_DONE 0x80 | |
363 | unsigned char tls_type; | |
71782a75 | 364 | |
0f20cc35 DJ |
365 | /* This is only used in single-GOT mode; in multi-GOT mode there |
366 | is one mips_got_entry per GOT entry, so the offset is stored | |
367 | there. In single-GOT mode there may be many mips_got_entry | |
368 | structures all referring to the same GOT slot. It might be | |
369 | possible to use root.got.offset instead, but that field is | |
370 | overloaded already. */ | |
371 | bfd_vma tls_got_offset; | |
71782a75 | 372 | |
634835ae RS |
373 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
374 | unsigned int global_got_area : 2; | |
375 | ||
71782a75 RS |
376 | /* True if one of the relocations described by possibly_dynamic_relocs |
377 | is against a readonly section. */ | |
378 | unsigned int readonly_reloc : 1; | |
379 | ||
861fb55a DJ |
380 | /* True if there is a relocation against this symbol that must be |
381 | resolved by the static linker (in other words, if the relocation | |
382 | cannot possibly be made dynamic). */ | |
383 | unsigned int has_static_relocs : 1; | |
384 | ||
71782a75 RS |
385 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
386 | This is set, for example, if there are relocations related to | |
387 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
388 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
389 | unsigned int no_fn_stub : 1; | |
390 | ||
391 | /* Whether we need the fn_stub; this is true if this symbol appears | |
392 | in any relocs other than a 16 bit call. */ | |
393 | unsigned int need_fn_stub : 1; | |
394 | ||
861fb55a DJ |
395 | /* True if this symbol is referenced by branch relocations from |
396 | any non-PIC input file. This is used to determine whether an | |
397 | la25 stub is required. */ | |
398 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
399 | |
400 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
401 | (as opposed to a PLT entry)? */ | |
402 | unsigned int needs_lazy_stub : 1; | |
b49e97c9 TS |
403 | }; |
404 | ||
405 | /* MIPS ELF linker hash table. */ | |
406 | ||
407 | struct mips_elf_link_hash_table | |
408 | { | |
409 | struct elf_link_hash_table root; | |
410 | #if 0 | |
411 | /* We no longer use this. */ | |
412 | /* String section indices for the dynamic section symbols. */ | |
413 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
414 | #endif | |
861fb55a | 415 | |
b49e97c9 TS |
416 | /* The number of .rtproc entries. */ |
417 | bfd_size_type procedure_count; | |
861fb55a | 418 | |
b49e97c9 TS |
419 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
420 | bfd_size_type compact_rel_size; | |
861fb55a | 421 | |
b49e97c9 | 422 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic |
8dc1a139 | 423 | entry is set to the address of __rld_obj_head as in IRIX5. */ |
b34976b6 | 424 | bfd_boolean use_rld_obj_head; |
861fb55a | 425 | |
b49e97c9 TS |
426 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ |
427 | bfd_vma rld_value; | |
861fb55a | 428 | |
b49e97c9 | 429 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 430 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
431 | |
432 | /* True if we can generate copy relocs and PLTs. */ | |
433 | bfd_boolean use_plts_and_copy_relocs; | |
434 | ||
0a44bf69 RS |
435 | /* True if we're generating code for VxWorks. */ |
436 | bfd_boolean is_vxworks; | |
861fb55a | 437 | |
0e53d9da AN |
438 | /* True if we already reported the small-data section overflow. */ |
439 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 440 | |
0a44bf69 RS |
441 | /* Shortcuts to some dynamic sections, or NULL if they are not |
442 | being used. */ | |
443 | asection *srelbss; | |
444 | asection *sdynbss; | |
445 | asection *srelplt; | |
446 | asection *srelplt2; | |
447 | asection *sgotplt; | |
448 | asection *splt; | |
4e41d0d7 | 449 | asection *sstubs; |
a8028dd0 | 450 | asection *sgot; |
861fb55a | 451 | |
a8028dd0 RS |
452 | /* The master GOT information. */ |
453 | struct mips_got_info *got_info; | |
861fb55a DJ |
454 | |
455 | /* The size of the PLT header in bytes. */ | |
0a44bf69 | 456 | bfd_vma plt_header_size; |
861fb55a DJ |
457 | |
458 | /* The size of a PLT entry in bytes. */ | |
0a44bf69 | 459 | bfd_vma plt_entry_size; |
861fb55a | 460 | |
33bb52fb RS |
461 | /* The number of functions that need a lazy-binding stub. */ |
462 | bfd_vma lazy_stub_count; | |
861fb55a | 463 | |
5108fc1b RS |
464 | /* The size of a function stub entry in bytes. */ |
465 | bfd_vma function_stub_size; | |
861fb55a DJ |
466 | |
467 | /* The number of reserved entries at the beginning of the GOT. */ | |
468 | unsigned int reserved_gotno; | |
469 | ||
470 | /* The section used for mips_elf_la25_stub trampolines. | |
471 | See the comment above that structure for details. */ | |
472 | asection *strampoline; | |
473 | ||
474 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
475 | pairs. */ | |
476 | htab_t la25_stubs; | |
477 | ||
478 | /* A function FN (NAME, IS, OS) that creates a new input section | |
479 | called NAME and links it to output section OS. If IS is nonnull, | |
480 | the new section should go immediately before it, otherwise it | |
481 | should go at the (current) beginning of OS. | |
482 | ||
483 | The function returns the new section on success, otherwise it | |
484 | returns null. */ | |
485 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
486 | }; | |
487 | ||
4dfe6ac6 NC |
488 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
489 | ||
490 | #define mips_elf_hash_table(p) \ | |
491 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
492 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
493 | ||
861fb55a | 494 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
495 | struct mips_htab_traverse_info |
496 | { | |
861fb55a DJ |
497 | /* The usual link-wide information. */ |
498 | struct bfd_link_info *info; | |
499 | bfd *output_bfd; | |
500 | ||
501 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
502 | bfd_boolean error; | |
b49e97c9 TS |
503 | }; |
504 | ||
0f20cc35 DJ |
505 | #define TLS_RELOC_P(r_type) \ |
506 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
507 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
508 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
509 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
510 | || r_type == R_MIPS_TLS_GD \ | |
511 | || r_type == R_MIPS_TLS_LDM \ | |
512 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
513 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
514 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
515 | || r_type == R_MIPS_TLS_TPREL32 \ | |
516 | || r_type == R_MIPS_TLS_TPREL64 \ | |
517 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
518 | || r_type == R_MIPS_TLS_TPREL_LO16) | |
519 | ||
b49e97c9 TS |
520 | /* Structure used to pass information to mips_elf_output_extsym. */ |
521 | ||
522 | struct extsym_info | |
523 | { | |
9e4aeb93 RS |
524 | bfd *abfd; |
525 | struct bfd_link_info *info; | |
b49e97c9 TS |
526 | struct ecoff_debug_info *debug; |
527 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 528 | bfd_boolean failed; |
b49e97c9 TS |
529 | }; |
530 | ||
8dc1a139 | 531 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
532 | |
533 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
534 | { | |
535 | "_procedure_table", | |
536 | "_procedure_string_table", | |
537 | "_procedure_table_size", | |
538 | NULL | |
539 | }; | |
540 | ||
541 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 542 | IRIX5. */ |
b49e97c9 TS |
543 | |
544 | typedef struct | |
545 | { | |
546 | unsigned long id1; /* Always one? */ | |
547 | unsigned long num; /* Number of compact relocation entries. */ | |
548 | unsigned long id2; /* Always two? */ | |
549 | unsigned long offset; /* The file offset of the first relocation. */ | |
550 | unsigned long reserved0; /* Zero? */ | |
551 | unsigned long reserved1; /* Zero? */ | |
552 | } Elf32_compact_rel; | |
553 | ||
554 | typedef struct | |
555 | { | |
556 | bfd_byte id1[4]; | |
557 | bfd_byte num[4]; | |
558 | bfd_byte id2[4]; | |
559 | bfd_byte offset[4]; | |
560 | bfd_byte reserved0[4]; | |
561 | bfd_byte reserved1[4]; | |
562 | } Elf32_External_compact_rel; | |
563 | ||
564 | typedef struct | |
565 | { | |
566 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
567 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
568 | unsigned int dist2to : 8; | |
569 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
570 | unsigned long konst; /* KONST field. See below. */ | |
571 | unsigned long vaddr; /* VADDR to be relocated. */ | |
572 | } Elf32_crinfo; | |
573 | ||
574 | typedef struct | |
575 | { | |
576 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
577 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
578 | unsigned int dist2to : 8; | |
579 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
580 | unsigned long konst; /* KONST field. See below. */ | |
581 | } Elf32_crinfo2; | |
582 | ||
583 | typedef struct | |
584 | { | |
585 | bfd_byte info[4]; | |
586 | bfd_byte konst[4]; | |
587 | bfd_byte vaddr[4]; | |
588 | } Elf32_External_crinfo; | |
589 | ||
590 | typedef struct | |
591 | { | |
592 | bfd_byte info[4]; | |
593 | bfd_byte konst[4]; | |
594 | } Elf32_External_crinfo2; | |
595 | ||
596 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
597 | ||
598 | #define CRINFO_CTYPE (0x1) | |
599 | #define CRINFO_CTYPE_SH (31) | |
600 | #define CRINFO_RTYPE (0xf) | |
601 | #define CRINFO_RTYPE_SH (27) | |
602 | #define CRINFO_DIST2TO (0xff) | |
603 | #define CRINFO_DIST2TO_SH (19) | |
604 | #define CRINFO_RELVADDR (0x7ffff) | |
605 | #define CRINFO_RELVADDR_SH (0) | |
606 | ||
607 | /* A compact relocation info has long (3 words) or short (2 words) | |
608 | formats. A short format doesn't have VADDR field and relvaddr | |
609 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
610 | #define CRF_MIPS_LONG 1 | |
611 | #define CRF_MIPS_SHORT 0 | |
612 | ||
613 | /* There are 4 types of compact relocation at least. The value KONST | |
614 | has different meaning for each type: | |
615 | ||
616 | (type) (konst) | |
617 | CT_MIPS_REL32 Address in data | |
618 | CT_MIPS_WORD Address in word (XXX) | |
619 | CT_MIPS_GPHI_LO GP - vaddr | |
620 | CT_MIPS_JMPAD Address to jump | |
621 | */ | |
622 | ||
623 | #define CRT_MIPS_REL32 0xa | |
624 | #define CRT_MIPS_WORD 0xb | |
625 | #define CRT_MIPS_GPHI_LO 0xc | |
626 | #define CRT_MIPS_JMPAD 0xd | |
627 | ||
628 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
629 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
630 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
631 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
632 | \f | |
633 | /* The structure of the runtime procedure descriptor created by the | |
634 | loader for use by the static exception system. */ | |
635 | ||
636 | typedef struct runtime_pdr { | |
ae9a127f NC |
637 | bfd_vma adr; /* Memory address of start of procedure. */ |
638 | long regmask; /* Save register mask. */ | |
639 | long regoffset; /* Save register offset. */ | |
640 | long fregmask; /* Save floating point register mask. */ | |
641 | long fregoffset; /* Save floating point register offset. */ | |
642 | long frameoffset; /* Frame size. */ | |
643 | short framereg; /* Frame pointer register. */ | |
644 | short pcreg; /* Offset or reg of return pc. */ | |
645 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 646 | long reserved; |
ae9a127f | 647 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
648 | } RPDR, *pRPDR; |
649 | #define cbRPDR sizeof (RPDR) | |
650 | #define rpdNil ((pRPDR) 0) | |
651 | \f | |
b15e6682 | 652 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
653 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
654 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 655 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 656 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
657 | static bfd_vma mips_elf_high |
658 | (bfd_vma); | |
b34976b6 | 659 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
660 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
661 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
662 | bfd_vma *, asection *); | |
9719ad41 RS |
663 | static hashval_t mips_elf_got_entry_hash |
664 | (const void *); | |
f4416af6 | 665 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 666 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 667 | static struct mips_got_info *mips_elf_got_for_ibfd |
9719ad41 | 668 | (struct mips_got_info *, bfd *); |
f4416af6 | 669 | |
b49e97c9 TS |
670 | /* This will be used when we sort the dynamic relocation records. */ |
671 | static bfd *reldyn_sorting_bfd; | |
672 | ||
6d30f5b2 NC |
673 | /* True if ABFD is for CPUs with load interlocking that include |
674 | non-MIPS1 CPUs and R3900. */ | |
675 | #define LOAD_INTERLOCKS_P(abfd) \ | |
676 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
677 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
678 | ||
cd8d5a82 CF |
679 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
680 | This should be safe for all architectures. We enable this predicate | |
681 | for RM9000 for now. */ | |
682 | #define JAL_TO_BAL_P(abfd) \ | |
683 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
684 | ||
685 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
686 | This should be safe for all architectures. We enable this predicate for | |
687 | all CPUs. */ | |
688 | #define JALR_TO_BAL_P(abfd) 1 | |
689 | ||
38a7df63 CF |
690 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
691 | This should be safe for all architectures. We enable this predicate for | |
692 | all CPUs. */ | |
693 | #define JR_TO_B_P(abfd) 1 | |
694 | ||
861fb55a DJ |
695 | /* True if ABFD is a PIC object. */ |
696 | #define PIC_OBJECT_P(abfd) \ | |
697 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
698 | ||
b49e97c9 | 699 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
700 | #define ABI_N32_P(abfd) \ |
701 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
702 | ||
4a14403c | 703 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 704 | #define ABI_64_P(abfd) \ |
141ff970 | 705 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 706 | |
4a14403c TS |
707 | /* Nonzero if ABFD is using NewABI conventions. */ |
708 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
709 | ||
710 | /* The IRIX compatibility level we are striving for. */ | |
b49e97c9 TS |
711 | #define IRIX_COMPAT(abfd) \ |
712 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
713 | ||
b49e97c9 TS |
714 | /* Whether we are trying to be compatible with IRIX at all. */ |
715 | #define SGI_COMPAT(abfd) \ | |
716 | (IRIX_COMPAT (abfd) != ict_none) | |
717 | ||
718 | /* The name of the options section. */ | |
719 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 720 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 721 | |
cc2e31b9 RS |
722 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
723 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
724 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
725 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
726 | ||
943284cc DJ |
727 | /* Whether the section is readonly. */ |
728 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
729 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
730 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
731 | ||
b49e97c9 | 732 | /* The name of the stub section. */ |
ca07892d | 733 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
734 | |
735 | /* The size of an external REL relocation. */ | |
736 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
737 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
738 | ||
0a44bf69 RS |
739 | /* The size of an external RELA relocation. */ |
740 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
741 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
742 | ||
b49e97c9 TS |
743 | /* The size of an external dynamic table entry. */ |
744 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
745 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
746 | ||
747 | /* The size of a GOT entry. */ | |
748 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
749 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
750 | ||
751 | /* The size of a symbol-table entry. */ | |
752 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
753 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
754 | ||
755 | /* The default alignment for sections, as a power of two. */ | |
756 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 757 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
758 | |
759 | /* Get word-sized data. */ | |
760 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
761 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
762 | ||
763 | /* Put out word-sized data. */ | |
764 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
765 | (ABI_64_P (abfd) \ | |
766 | ? bfd_put_64 (abfd, val, ptr) \ | |
767 | : bfd_put_32 (abfd, val, ptr)) | |
768 | ||
861fb55a DJ |
769 | /* The opcode for word-sized loads (LW or LD). */ |
770 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
771 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
772 | ||
b49e97c9 | 773 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 774 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 775 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
776 | |
777 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
778 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
779 | ||
4ffba85c AO |
780 | /* Determine whether the internal relocation of index REL_IDX is REL |
781 | (zero) or RELA (non-zero). The assumption is that, if there are | |
782 | two relocation sections for this section, one of them is REL and | |
783 | the other is RELA. If the index of the relocation we're testing is | |
784 | in range for the first relocation section, check that the external | |
785 | relocation size is that for RELA. It is also assumed that, if | |
786 | rel_idx is not in range for the first section, and this first | |
787 | section contains REL relocs, then the relocation is in the second | |
788 | section, that is RELA. */ | |
789 | #define MIPS_RELOC_RELA_P(abfd, sec, rel_idx) \ | |
790 | ((NUM_SHDR_ENTRIES (&elf_section_data (sec)->rel_hdr) \ | |
791 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel \ | |
792 | > (bfd_vma)(rel_idx)) \ | |
793 | == (elf_section_data (sec)->rel_hdr.sh_entsize \ | |
794 | == (ABI_64_P (abfd) ? sizeof (Elf64_External_Rela) \ | |
795 | : sizeof (Elf32_External_Rela)))) | |
796 | ||
0a44bf69 RS |
797 | /* The name of the dynamic relocation section. */ |
798 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
799 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
800 | ||
b49e97c9 TS |
801 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
802 | from smaller values. Start with zero, widen, *then* decrement. */ | |
803 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 804 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 805 | |
51e38d68 RS |
806 | /* The value to write into got[1] for SVR4 targets, to identify it is |
807 | a GNU object. The dynamic linker can then use got[1] to store the | |
808 | module pointer. */ | |
809 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
810 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
811 | ||
f4416af6 | 812 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
813 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
814 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
815 | |
816 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
817 | offsets from $gp. */ | |
0a44bf69 | 818 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 819 | |
6a691779 | 820 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
821 | #define STUB_LW(abfd) \ |
822 | ((ABI_64_P (abfd) \ | |
823 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
824 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
825 | #define STUB_MOVE(abfd) \ | |
826 | ((ABI_64_P (abfd) \ | |
827 | ? 0x03e0782d /* daddu t7,ra */ \ | |
828 | : 0x03e07821)) /* addu t7,ra */ | |
829 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
830 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
831 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
832 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
833 | #define STUB_LI16S(abfd, VAL) \ |
834 | ((ABI_64_P (abfd) \ | |
835 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
836 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
837 | ||
5108fc1b RS |
838 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
839 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
840 | |
841 | /* The name of the dynamic interpreter. This is put in the .interp | |
842 | section. */ | |
843 | ||
844 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
845 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
846 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
847 | : "/usr/lib/libc.so.1") | |
848 | ||
849 | #ifdef BFD64 | |
ee6423ed AO |
850 | #define MNAME(bfd,pre,pos) \ |
851 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
852 | #define ELF_R_SYM(bfd, i) \ |
853 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
854 | #define ELF_R_TYPE(bfd, i) \ | |
855 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
856 | #define ELF_R_INFO(bfd, s, t) \ | |
857 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
858 | #else | |
ee6423ed | 859 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
860 | #define ELF_R_SYM(bfd, i) \ |
861 | (ELF32_R_SYM (i)) | |
862 | #define ELF_R_TYPE(bfd, i) \ | |
863 | (ELF32_R_TYPE (i)) | |
864 | #define ELF_R_INFO(bfd, s, t) \ | |
865 | (ELF32_R_INFO (s, t)) | |
866 | #endif | |
867 | \f | |
868 | /* The mips16 compiler uses a couple of special sections to handle | |
869 | floating point arguments. | |
870 | ||
871 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
872 | copy floating point arguments from the fp regs to the gp regs and | |
873 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
874 | call should be redirected to the stub instead. If no 32 bit | |
875 | function calls FNNAME, the stub should be discarded. We need to | |
876 | consider any reference to the function, not just a call, because | |
877 | if the address of the function is taken we will need the stub, | |
878 | since the address might be passed to a 32 bit function. | |
879 | ||
880 | Section names that look like .mips16.call.FNNAME contain stubs | |
881 | that copy floating point arguments from the gp regs to the fp | |
882 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
883 | then any 16 bit function that calls FNNAME should be redirected | |
884 | to the stub instead. If FNNAME is not a 32 bit function, the | |
885 | stub should be discarded. | |
886 | ||
887 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
888 | which call FNNAME and then copy the return value from the fp regs | |
889 | to the gp regs. These stubs store the return value in $18 while | |
890 | calling FNNAME; any function which might call one of these stubs | |
891 | must arrange to save $18 around the call. (This case is not | |
892 | needed for 32 bit functions that call 16 bit functions, because | |
893 | 16 bit functions always return floating point values in both | |
894 | $f0/$f1 and $2/$3.) | |
895 | ||
896 | Note that in all cases FNNAME might be defined statically. | |
897 | Therefore, FNNAME is not used literally. Instead, the relocation | |
898 | information will indicate which symbol the section is for. | |
899 | ||
900 | We record any stubs that we find in the symbol table. */ | |
901 | ||
902 | #define FN_STUB ".mips16.fn." | |
903 | #define CALL_STUB ".mips16.call." | |
904 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
905 | |
906 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
907 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
908 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 909 | \f |
861fb55a | 910 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
911 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
912 | { | |
861fb55a DJ |
913 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
914 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
915 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
916 | 0x031cc023, /* subu $24, $24, $28 */ | |
917 | 0x03e07821, /* move $15, $31 */ | |
918 | 0x0018c082, /* srl $24, $24, 2 */ | |
919 | 0x0320f809, /* jalr $25 */ | |
920 | 0x2718fffe /* subu $24, $24, 2 */ | |
921 | }; | |
922 | ||
923 | /* The format of the first PLT entry in an N32 executable. Different | |
924 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
925 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
926 | { | |
861fb55a DJ |
927 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
928 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
929 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
930 | 0x030ec023, /* subu $24, $24, $14 */ | |
931 | 0x03e07821, /* move $15, $31 */ | |
932 | 0x0018c082, /* srl $24, $24, 2 */ | |
933 | 0x0320f809, /* jalr $25 */ | |
934 | 0x2718fffe /* subu $24, $24, 2 */ | |
935 | }; | |
936 | ||
937 | /* The format of the first PLT entry in an N64 executable. Different | |
938 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
939 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
940 | { | |
861fb55a DJ |
941 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
942 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
943 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
944 | 0x030ec023, /* subu $24, $24, $14 */ | |
945 | 0x03e07821, /* move $15, $31 */ | |
946 | 0x0018c0c2, /* srl $24, $24, 3 */ | |
947 | 0x0320f809, /* jalr $25 */ | |
948 | 0x2718fffe /* subu $24, $24, 2 */ | |
949 | }; | |
950 | ||
951 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
952 | static const bfd_vma mips_exec_plt_entry[] = |
953 | { | |
861fb55a DJ |
954 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
955 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
956 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
957 | 0x03200008 /* jr $25 */ | |
958 | }; | |
959 | ||
0a44bf69 | 960 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
961 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
962 | { | |
0a44bf69 RS |
963 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
964 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
965 | 0x8f390008, /* lw t9, 8(t9) */ | |
966 | 0x00000000, /* nop */ | |
967 | 0x03200008, /* jr t9 */ | |
968 | 0x00000000 /* nop */ | |
969 | }; | |
970 | ||
971 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
972 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
973 | { | |
0a44bf69 RS |
974 | 0x10000000, /* b .PLT_resolver */ |
975 | 0x24180000, /* li t8, <pltindex> */ | |
976 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
977 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
978 | 0x8f390000, /* lw t9, 0(t9) */ | |
979 | 0x00000000, /* nop */ | |
980 | 0x03200008, /* jr t9 */ | |
981 | 0x00000000 /* nop */ | |
982 | }; | |
983 | ||
984 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
985 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
986 | { | |
0a44bf69 RS |
987 | 0x8f990008, /* lw t9, 8(gp) */ |
988 | 0x00000000, /* nop */ | |
989 | 0x03200008, /* jr t9 */ | |
990 | 0x00000000, /* nop */ | |
991 | 0x00000000, /* nop */ | |
992 | 0x00000000 /* nop */ | |
993 | }; | |
994 | ||
995 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
996 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
997 | { | |
0a44bf69 RS |
998 | 0x10000000, /* b .PLT_resolver */ |
999 | 0x24180000 /* li t8, <pltindex> */ | |
1000 | }; | |
1001 | \f | |
b49e97c9 TS |
1002 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1003 | ||
1004 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1005 | ((struct mips_elf_link_hash_entry *) \ | |
1006 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1007 | (copy), (follow))) | |
1008 | ||
1009 | /* Traverse a MIPS ELF linker hash table. */ | |
1010 | ||
1011 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1012 | (elf_link_hash_traverse \ | |
1013 | (&(table)->root, \ | |
9719ad41 | 1014 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1015 | (info))) |
1016 | ||
0f20cc35 DJ |
1017 | /* Find the base offsets for thread-local storage in this object, |
1018 | for GD/LD and IE/LE respectively. */ | |
1019 | ||
1020 | #define TP_OFFSET 0x7000 | |
1021 | #define DTP_OFFSET 0x8000 | |
1022 | ||
1023 | static bfd_vma | |
1024 | dtprel_base (struct bfd_link_info *info) | |
1025 | { | |
1026 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1027 | if (elf_hash_table (info)->tls_sec == NULL) | |
1028 | return 0; | |
1029 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1030 | } | |
1031 | ||
1032 | static bfd_vma | |
1033 | tprel_base (struct bfd_link_info *info) | |
1034 | { | |
1035 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1036 | if (elf_hash_table (info)->tls_sec == NULL) | |
1037 | return 0; | |
1038 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1039 | } | |
1040 | ||
b49e97c9 TS |
1041 | /* Create an entry in a MIPS ELF linker hash table. */ |
1042 | ||
1043 | static struct bfd_hash_entry * | |
9719ad41 RS |
1044 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1045 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1046 | { |
1047 | struct mips_elf_link_hash_entry *ret = | |
1048 | (struct mips_elf_link_hash_entry *) entry; | |
1049 | ||
1050 | /* Allocate the structure if it has not already been allocated by a | |
1051 | subclass. */ | |
9719ad41 RS |
1052 | if (ret == NULL) |
1053 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1054 | if (ret == NULL) | |
b49e97c9 TS |
1055 | return (struct bfd_hash_entry *) ret; |
1056 | ||
1057 | /* Call the allocation method of the superclass. */ | |
1058 | ret = ((struct mips_elf_link_hash_entry *) | |
1059 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1060 | table, string)); | |
9719ad41 | 1061 | if (ret != NULL) |
b49e97c9 TS |
1062 | { |
1063 | /* Set local fields. */ | |
1064 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1065 | /* We use -2 as a marker to indicate that the information has | |
1066 | not been set. -1 means there is no associated ifd. */ | |
1067 | ret->esym.ifd = -2; | |
861fb55a | 1068 | ret->la25_stub = 0; |
b49e97c9 | 1069 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1070 | ret->fn_stub = NULL; |
b49e97c9 TS |
1071 | ret->call_stub = NULL; |
1072 | ret->call_fp_stub = NULL; | |
71782a75 | 1073 | ret->tls_type = GOT_NORMAL; |
634835ae | 1074 | ret->global_got_area = GGA_NONE; |
71782a75 | 1075 | ret->readonly_reloc = FALSE; |
861fb55a | 1076 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1077 | ret->no_fn_stub = FALSE; |
1078 | ret->need_fn_stub = FALSE; | |
861fb55a | 1079 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1080 | ret->needs_lazy_stub = FALSE; |
b49e97c9 TS |
1081 | } |
1082 | ||
1083 | return (struct bfd_hash_entry *) ret; | |
1084 | } | |
f0abc2a1 AM |
1085 | |
1086 | bfd_boolean | |
9719ad41 | 1087 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1088 | { |
f592407e AM |
1089 | if (!sec->used_by_bfd) |
1090 | { | |
1091 | struct _mips_elf_section_data *sdata; | |
1092 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1093 | |
f592407e AM |
1094 | sdata = bfd_zalloc (abfd, amt); |
1095 | if (sdata == NULL) | |
1096 | return FALSE; | |
1097 | sec->used_by_bfd = sdata; | |
1098 | } | |
f0abc2a1 AM |
1099 | |
1100 | return _bfd_elf_new_section_hook (abfd, sec); | |
1101 | } | |
b49e97c9 TS |
1102 | \f |
1103 | /* Read ECOFF debugging information from a .mdebug section into a | |
1104 | ecoff_debug_info structure. */ | |
1105 | ||
b34976b6 | 1106 | bfd_boolean |
9719ad41 RS |
1107 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1108 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1109 | { |
1110 | HDRR *symhdr; | |
1111 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1112 | char *ext_hdr; |
b49e97c9 TS |
1113 | |
1114 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1115 | memset (debug, 0, sizeof (*debug)); | |
1116 | ||
9719ad41 | 1117 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1118 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1119 | goto error_return; | |
1120 | ||
9719ad41 | 1121 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1122 | swap->external_hdr_size)) |
b49e97c9 TS |
1123 | goto error_return; |
1124 | ||
1125 | symhdr = &debug->symbolic_header; | |
1126 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1127 | ||
1128 | /* The symbolic header contains absolute file offsets and sizes to | |
1129 | read. */ | |
1130 | #define READ(ptr, offset, count, size, type) \ | |
1131 | if (symhdr->count == 0) \ | |
1132 | debug->ptr = NULL; \ | |
1133 | else \ | |
1134 | { \ | |
1135 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1136 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1137 | if (debug->ptr == NULL) \ |
1138 | goto error_return; \ | |
9719ad41 | 1139 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1140 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1141 | goto error_return; \ | |
1142 | } | |
1143 | ||
1144 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1145 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1146 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1147 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1148 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1149 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1150 | union aux_ext *); | |
1151 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1152 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1153 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1154 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1155 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1156 | #undef READ |
1157 | ||
1158 | debug->fdr = NULL; | |
b49e97c9 | 1159 | |
b34976b6 | 1160 | return TRUE; |
b49e97c9 TS |
1161 | |
1162 | error_return: | |
1163 | if (ext_hdr != NULL) | |
1164 | free (ext_hdr); | |
1165 | if (debug->line != NULL) | |
1166 | free (debug->line); | |
1167 | if (debug->external_dnr != NULL) | |
1168 | free (debug->external_dnr); | |
1169 | if (debug->external_pdr != NULL) | |
1170 | free (debug->external_pdr); | |
1171 | if (debug->external_sym != NULL) | |
1172 | free (debug->external_sym); | |
1173 | if (debug->external_opt != NULL) | |
1174 | free (debug->external_opt); | |
1175 | if (debug->external_aux != NULL) | |
1176 | free (debug->external_aux); | |
1177 | if (debug->ss != NULL) | |
1178 | free (debug->ss); | |
1179 | if (debug->ssext != NULL) | |
1180 | free (debug->ssext); | |
1181 | if (debug->external_fdr != NULL) | |
1182 | free (debug->external_fdr); | |
1183 | if (debug->external_rfd != NULL) | |
1184 | free (debug->external_rfd); | |
1185 | if (debug->external_ext != NULL) | |
1186 | free (debug->external_ext); | |
b34976b6 | 1187 | return FALSE; |
b49e97c9 TS |
1188 | } |
1189 | \f | |
1190 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1191 | ||
1192 | static void | |
9719ad41 | 1193 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1194 | { |
1195 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1196 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1197 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1198 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1199 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1200 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1201 | ||
1202 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1203 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1204 | ||
1205 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1206 | } |
1207 | ||
1208 | /* Create a runtime procedure table from the .mdebug section. */ | |
1209 | ||
b34976b6 | 1210 | static bfd_boolean |
9719ad41 RS |
1211 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1212 | struct bfd_link_info *info, asection *s, | |
1213 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1214 | { |
1215 | const struct ecoff_debug_swap *swap; | |
1216 | HDRR *hdr = &debug->symbolic_header; | |
1217 | RPDR *rpdr, *rp; | |
1218 | struct rpdr_ext *erp; | |
9719ad41 | 1219 | void *rtproc; |
b49e97c9 TS |
1220 | struct pdr_ext *epdr; |
1221 | struct sym_ext *esym; | |
1222 | char *ss, **sv; | |
1223 | char *str; | |
1224 | bfd_size_type size; | |
1225 | bfd_size_type count; | |
1226 | unsigned long sindex; | |
1227 | unsigned long i; | |
1228 | PDR pdr; | |
1229 | SYMR sym; | |
1230 | const char *no_name_func = _("static procedure (no name)"); | |
1231 | ||
1232 | epdr = NULL; | |
1233 | rpdr = NULL; | |
1234 | esym = NULL; | |
1235 | ss = NULL; | |
1236 | sv = NULL; | |
1237 | ||
1238 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1239 | ||
1240 | sindex = strlen (no_name_func) + 1; | |
1241 | count = hdr->ipdMax; | |
1242 | if (count > 0) | |
1243 | { | |
1244 | size = swap->external_pdr_size; | |
1245 | ||
9719ad41 | 1246 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1247 | if (epdr == NULL) |
1248 | goto error_return; | |
1249 | ||
9719ad41 | 1250 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1251 | goto error_return; |
1252 | ||
1253 | size = sizeof (RPDR); | |
9719ad41 | 1254 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1255 | if (rpdr == NULL) |
1256 | goto error_return; | |
1257 | ||
1258 | size = sizeof (char *); | |
9719ad41 | 1259 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1260 | if (sv == NULL) |
1261 | goto error_return; | |
1262 | ||
1263 | count = hdr->isymMax; | |
1264 | size = swap->external_sym_size; | |
9719ad41 | 1265 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1266 | if (esym == NULL) |
1267 | goto error_return; | |
1268 | ||
9719ad41 | 1269 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1270 | goto error_return; |
1271 | ||
1272 | count = hdr->issMax; | |
9719ad41 | 1273 | ss = bfd_malloc (count); |
b49e97c9 TS |
1274 | if (ss == NULL) |
1275 | goto error_return; | |
f075ee0c | 1276 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1277 | goto error_return; |
1278 | ||
1279 | count = hdr->ipdMax; | |
1280 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1281 | { | |
9719ad41 RS |
1282 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1283 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1284 | rp->adr = sym.value; |
1285 | rp->regmask = pdr.regmask; | |
1286 | rp->regoffset = pdr.regoffset; | |
1287 | rp->fregmask = pdr.fregmask; | |
1288 | rp->fregoffset = pdr.fregoffset; | |
1289 | rp->frameoffset = pdr.frameoffset; | |
1290 | rp->framereg = pdr.framereg; | |
1291 | rp->pcreg = pdr.pcreg; | |
1292 | rp->irpss = sindex; | |
1293 | sv[i] = ss + sym.iss; | |
1294 | sindex += strlen (sv[i]) + 1; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1299 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1300 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1301 | if (rtproc == NULL) |
1302 | { | |
1303 | mips_elf_hash_table (info)->procedure_count = 0; | |
1304 | goto error_return; | |
1305 | } | |
1306 | ||
1307 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1308 | ||
9719ad41 | 1309 | erp = rtproc; |
b49e97c9 TS |
1310 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1311 | erp++; | |
1312 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1313 | strcpy (str, no_name_func); | |
1314 | str += strlen (no_name_func) + 1; | |
1315 | for (i = 0; i < count; i++) | |
1316 | { | |
1317 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1318 | strcpy (str, sv[i]); | |
1319 | str += strlen (sv[i]) + 1; | |
1320 | } | |
1321 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1322 | ||
1323 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1324 | s->size = size; |
9719ad41 | 1325 | s->contents = rtproc; |
b49e97c9 TS |
1326 | |
1327 | /* Skip this section later on (I don't think this currently | |
1328 | matters, but someday it might). */ | |
8423293d | 1329 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1330 | |
1331 | if (epdr != NULL) | |
1332 | free (epdr); | |
1333 | if (rpdr != NULL) | |
1334 | free (rpdr); | |
1335 | if (esym != NULL) | |
1336 | free (esym); | |
1337 | if (ss != NULL) | |
1338 | free (ss); | |
1339 | if (sv != NULL) | |
1340 | free (sv); | |
1341 | ||
b34976b6 | 1342 | return TRUE; |
b49e97c9 TS |
1343 | |
1344 | error_return: | |
1345 | if (epdr != NULL) | |
1346 | free (epdr); | |
1347 | if (rpdr != NULL) | |
1348 | free (rpdr); | |
1349 | if (esym != NULL) | |
1350 | free (esym); | |
1351 | if (ss != NULL) | |
1352 | free (ss); | |
1353 | if (sv != NULL) | |
1354 | free (sv); | |
b34976b6 | 1355 | return FALSE; |
b49e97c9 | 1356 | } |
738e5348 | 1357 | \f |
861fb55a DJ |
1358 | /* We're going to create a stub for H. Create a symbol for the stub's |
1359 | value and size, to help make the disassembly easier to read. */ | |
1360 | ||
1361 | static bfd_boolean | |
1362 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1363 | struct mips_elf_link_hash_entry *h, | |
1364 | const char *prefix, asection *s, bfd_vma value, | |
1365 | bfd_vma size) | |
1366 | { | |
1367 | struct bfd_link_hash_entry *bh; | |
1368 | struct elf_link_hash_entry *elfh; | |
1369 | const char *name; | |
1370 | ||
1371 | /* Create a new symbol. */ | |
1372 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1373 | bh = NULL; | |
1374 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1375 | BSF_LOCAL, s, value, NULL, | |
1376 | TRUE, FALSE, &bh)) | |
1377 | return FALSE; | |
1378 | ||
1379 | /* Make it a local function. */ | |
1380 | elfh = (struct elf_link_hash_entry *) bh; | |
1381 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1382 | elfh->size = size; | |
1383 | elfh->forced_local = 1; | |
1384 | return TRUE; | |
1385 | } | |
1386 | ||
738e5348 RS |
1387 | /* We're about to redefine H. Create a symbol to represent H's |
1388 | current value and size, to help make the disassembly easier | |
1389 | to read. */ | |
1390 | ||
1391 | static bfd_boolean | |
1392 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1393 | struct mips_elf_link_hash_entry *h, | |
1394 | const char *prefix) | |
1395 | { | |
1396 | struct bfd_link_hash_entry *bh; | |
1397 | struct elf_link_hash_entry *elfh; | |
1398 | const char *name; | |
1399 | asection *s; | |
1400 | bfd_vma value; | |
1401 | ||
1402 | /* Read the symbol's value. */ | |
1403 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1404 | || h->root.root.type == bfd_link_hash_defweak); | |
1405 | s = h->root.root.u.def.section; | |
1406 | value = h->root.root.u.def.value; | |
1407 | ||
1408 | /* Create a new symbol. */ | |
1409 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1410 | bh = NULL; | |
1411 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1412 | BSF_LOCAL, s, value, NULL, | |
1413 | TRUE, FALSE, &bh)) | |
1414 | return FALSE; | |
1415 | ||
1416 | /* Make it local and copy the other attributes from H. */ | |
1417 | elfh = (struct elf_link_hash_entry *) bh; | |
1418 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1419 | elfh->other = h->root.other; | |
1420 | elfh->size = h->root.size; | |
1421 | elfh->forced_local = 1; | |
1422 | return TRUE; | |
1423 | } | |
1424 | ||
1425 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1426 | function rather than to a hard-float stub. */ | |
1427 | ||
1428 | static bfd_boolean | |
1429 | section_allows_mips16_refs_p (asection *section) | |
1430 | { | |
1431 | const char *name; | |
1432 | ||
1433 | name = bfd_get_section_name (section->owner, section); | |
1434 | return (FN_STUB_P (name) | |
1435 | || CALL_STUB_P (name) | |
1436 | || CALL_FP_STUB_P (name) | |
1437 | || strcmp (name, ".pdr") == 0); | |
1438 | } | |
1439 | ||
1440 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1441 | stub section of some kind. Return the R_SYMNDX of the target | |
1442 | function, or 0 if we can't decide which function that is. */ | |
1443 | ||
1444 | static unsigned long | |
502e814e TT |
1445 | mips16_stub_symndx (asection *sec ATTRIBUTE_UNUSED, |
1446 | const Elf_Internal_Rela *relocs, | |
738e5348 RS |
1447 | const Elf_Internal_Rela *relend) |
1448 | { | |
1449 | const Elf_Internal_Rela *rel; | |
1450 | ||
1451 | /* Trust the first R_MIPS_NONE relocation, if any. */ | |
1452 | for (rel = relocs; rel < relend; rel++) | |
1453 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) | |
1454 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1455 | ||
1456 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1457 | the traditional behavior. */ | |
1458 | if (relocs < relend) | |
1459 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1460 | ||
1461 | return 0; | |
1462 | } | |
b49e97c9 TS |
1463 | |
1464 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1465 | discard them. */ | |
1466 | ||
861fb55a DJ |
1467 | static void |
1468 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1469 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1470 | { |
738e5348 RS |
1471 | /* Dynamic symbols must use the standard call interface, in case other |
1472 | objects try to call them. */ | |
1473 | if (h->fn_stub != NULL | |
1474 | && h->root.dynindx != -1) | |
1475 | { | |
1476 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1477 | h->need_fn_stub = TRUE; | |
1478 | } | |
1479 | ||
b49e97c9 TS |
1480 | if (h->fn_stub != NULL |
1481 | && ! h->need_fn_stub) | |
1482 | { | |
1483 | /* We don't need the fn_stub; the only references to this symbol | |
1484 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1485 | being included in the link. */ | |
eea6121a | 1486 | h->fn_stub->size = 0; |
b49e97c9 TS |
1487 | h->fn_stub->flags &= ~SEC_RELOC; |
1488 | h->fn_stub->reloc_count = 0; | |
1489 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1490 | } | |
1491 | ||
1492 | if (h->call_stub != NULL | |
30c09090 | 1493 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1494 | { |
1495 | /* We don't need the call_stub; this is a 16 bit function, so | |
1496 | calls from other 16 bit functions are OK. Clobber the size | |
1497 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1498 | h->call_stub->size = 0; |
b49e97c9 TS |
1499 | h->call_stub->flags &= ~SEC_RELOC; |
1500 | h->call_stub->reloc_count = 0; | |
1501 | h->call_stub->flags |= SEC_EXCLUDE; | |
1502 | } | |
1503 | ||
1504 | if (h->call_fp_stub != NULL | |
30c09090 | 1505 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1506 | { |
1507 | /* We don't need the call_stub; this is a 16 bit function, so | |
1508 | calls from other 16 bit functions are OK. Clobber the size | |
1509 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1510 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1511 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1512 | h->call_fp_stub->reloc_count = 0; | |
1513 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1514 | } | |
861fb55a DJ |
1515 | } |
1516 | ||
1517 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1518 | ||
1519 | static hashval_t | |
1520 | mips_elf_la25_stub_hash (const void *entry_) | |
1521 | { | |
1522 | const struct mips_elf_la25_stub *entry; | |
1523 | ||
1524 | entry = (struct mips_elf_la25_stub *) entry_; | |
1525 | return entry->h->root.root.u.def.section->id | |
1526 | + entry->h->root.root.u.def.value; | |
1527 | } | |
1528 | ||
1529 | static int | |
1530 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1531 | { | |
1532 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1533 | ||
1534 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1535 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1536 | return ((entry1->h->root.root.u.def.section | |
1537 | == entry2->h->root.root.u.def.section) | |
1538 | && (entry1->h->root.root.u.def.value | |
1539 | == entry2->h->root.root.u.def.value)); | |
1540 | } | |
1541 | ||
1542 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1543 | the linker's implementation of add_stub_function. Return true on | |
1544 | success. */ | |
1545 | ||
1546 | bfd_boolean | |
1547 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1548 | asection *(*fn) (const char *, asection *, | |
1549 | asection *)) | |
1550 | { | |
1551 | struct mips_elf_link_hash_table *htab; | |
1552 | ||
1553 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1554 | if (htab == NULL) |
1555 | return FALSE; | |
1556 | ||
861fb55a DJ |
1557 | htab->add_stub_section = fn; |
1558 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1559 | mips_elf_la25_stub_eq, NULL); | |
1560 | if (htab->la25_stubs == NULL) | |
1561 | return FALSE; | |
1562 | ||
1563 | return TRUE; | |
1564 | } | |
1565 | ||
1566 | /* Return true if H is a locally-defined PIC function, in the sense | |
1567 | that it might need $25 to be valid on entry. Note that MIPS16 | |
1568 | functions never need $25 to be valid on entry; they set up $gp | |
1569 | using PC-relative instructions instead. */ | |
1570 | ||
1571 | static bfd_boolean | |
1572 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1573 | { | |
1574 | return ((h->root.root.type == bfd_link_hash_defined | |
1575 | || h->root.root.type == bfd_link_hash_defweak) | |
1576 | && h->root.def_regular | |
1577 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
1578 | && !ELF_ST_IS_MIPS16 (h->root.other) | |
1579 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) | |
1580 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1581 | } | |
1582 | ||
1583 | /* STUB describes an la25 stub that we have decided to implement | |
1584 | by inserting an LUI/ADDIU pair before the target function. | |
1585 | Create the section and redirect the function symbol to it. */ | |
1586 | ||
1587 | static bfd_boolean | |
1588 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1589 | struct bfd_link_info *info) | |
1590 | { | |
1591 | struct mips_elf_link_hash_table *htab; | |
1592 | char *name; | |
1593 | asection *s, *input_section; | |
1594 | unsigned int align; | |
1595 | ||
1596 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1597 | if (htab == NULL) |
1598 | return FALSE; | |
861fb55a DJ |
1599 | |
1600 | /* Create a unique name for the new section. */ | |
1601 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1602 | if (name == NULL) | |
1603 | return FALSE; | |
1604 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1605 | ||
1606 | /* Create the section. */ | |
1607 | input_section = stub->h->root.root.u.def.section; | |
1608 | s = htab->add_stub_section (name, input_section, | |
1609 | input_section->output_section); | |
1610 | if (s == NULL) | |
1611 | return FALSE; | |
1612 | ||
1613 | /* Make sure that any padding goes before the stub. */ | |
1614 | align = input_section->alignment_power; | |
1615 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1616 | return FALSE; | |
1617 | if (align > 3) | |
1618 | s->size = (1 << align) - 8; | |
1619 | ||
1620 | /* Create a symbol for the stub. */ | |
1621 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1622 | stub->stub_section = s; | |
1623 | stub->offset = s->size; | |
1624 | ||
1625 | /* Allocate room for it. */ | |
1626 | s->size += 8; | |
1627 | return TRUE; | |
1628 | } | |
1629 | ||
1630 | /* STUB describes an la25 stub that we have decided to implement | |
1631 | with a separate trampoline. Allocate room for it and redirect | |
1632 | the function symbol to it. */ | |
1633 | ||
1634 | static bfd_boolean | |
1635 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1636 | struct bfd_link_info *info) | |
1637 | { | |
1638 | struct mips_elf_link_hash_table *htab; | |
1639 | asection *s; | |
1640 | ||
1641 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1642 | if (htab == NULL) |
1643 | return FALSE; | |
861fb55a DJ |
1644 | |
1645 | /* Create a trampoline section, if we haven't already. */ | |
1646 | s = htab->strampoline; | |
1647 | if (s == NULL) | |
1648 | { | |
1649 | asection *input_section = stub->h->root.root.u.def.section; | |
1650 | s = htab->add_stub_section (".text", NULL, | |
1651 | input_section->output_section); | |
1652 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1653 | return FALSE; | |
1654 | htab->strampoline = s; | |
1655 | } | |
1656 | ||
1657 | /* Create a symbol for the stub. */ | |
1658 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1659 | stub->stub_section = s; | |
1660 | stub->offset = s->size; | |
1661 | ||
1662 | /* Allocate room for it. */ | |
1663 | s->size += 16; | |
1664 | return TRUE; | |
1665 | } | |
1666 | ||
1667 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1668 | appropriate stub exists and point H at it. */ | |
1669 | ||
1670 | static bfd_boolean | |
1671 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1672 | struct mips_elf_link_hash_entry *h) | |
1673 | { | |
1674 | struct mips_elf_link_hash_table *htab; | |
1675 | struct mips_elf_la25_stub search, *stub; | |
1676 | bfd_boolean use_trampoline_p; | |
1677 | asection *s; | |
1678 | bfd_vma value; | |
1679 | void **slot; | |
1680 | ||
1681 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning | |
1682 | of the section and if we would need no more than 2 nops. */ | |
1683 | s = h->root.root.u.def.section; | |
1684 | value = h->root.root.u.def.value; | |
1685 | use_trampoline_p = (value != 0 || s->alignment_power > 4); | |
1686 | ||
1687 | /* Describe the stub we want. */ | |
1688 | search.stub_section = NULL; | |
1689 | search.offset = 0; | |
1690 | search.h = h; | |
1691 | ||
1692 | /* See if we've already created an equivalent stub. */ | |
1693 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1694 | if (htab == NULL) |
1695 | return FALSE; | |
1696 | ||
861fb55a DJ |
1697 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1698 | if (slot == NULL) | |
1699 | return FALSE; | |
1700 | ||
1701 | stub = (struct mips_elf_la25_stub *) *slot; | |
1702 | if (stub != NULL) | |
1703 | { | |
1704 | /* We can reuse the existing stub. */ | |
1705 | h->la25_stub = stub; | |
1706 | return TRUE; | |
1707 | } | |
1708 | ||
1709 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1710 | stub = bfd_malloc (sizeof (search)); | |
1711 | if (stub == NULL) | |
1712 | return FALSE; | |
1713 | *stub = search; | |
1714 | *slot = stub; | |
1715 | ||
1716 | h->la25_stub = stub; | |
1717 | return (use_trampoline_p | |
1718 | ? mips_elf_add_la25_trampoline (stub, info) | |
1719 | : mips_elf_add_la25_intro (stub, info)); | |
1720 | } | |
1721 | ||
1722 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1723 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1724 | ||
1725 | static bfd_boolean | |
1726 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1727 | { | |
1728 | struct mips_htab_traverse_info *hti; | |
1729 | ||
1730 | hti = (struct mips_htab_traverse_info *) data; | |
1731 | if (h->root.root.type == bfd_link_hash_warning) | |
1732 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
1733 | ||
1734 | if (!hti->info->relocatable) | |
1735 | mips_elf_check_mips16_stubs (hti->info, h); | |
b49e97c9 | 1736 | |
861fb55a DJ |
1737 | if (mips_elf_local_pic_function_p (h)) |
1738 | { | |
1739 | /* H is a function that might need $25 to be valid on entry. | |
1740 | If we're creating a non-PIC relocatable object, mark H as | |
1741 | being PIC. If we're creating a non-relocatable object with | |
1742 | non-PIC branches and jumps to H, make sure that H has an la25 | |
1743 | stub. */ | |
1744 | if (hti->info->relocatable) | |
1745 | { | |
1746 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
1747 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
1748 | } | |
1749 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
1750 | { | |
1751 | hti->error = TRUE; | |
1752 | return FALSE; | |
1753 | } | |
1754 | } | |
b34976b6 | 1755 | return TRUE; |
b49e97c9 TS |
1756 | } |
1757 | \f | |
d6f16593 MR |
1758 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1759 | Most mips16 instructions are 16 bits, but these instructions | |
1760 | are 32 bits. | |
1761 | ||
1762 | The format of these instructions is: | |
1763 | ||
1764 | +--------------+--------------------------------+ | |
1765 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1766 | +--------------+--------------------------------+ | |
1767 | | Immediate 15:0 | | |
1768 | +-----------------------------------------------+ | |
1769 | ||
1770 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1771 | Note that the immediate value in the first word is swapped. | |
1772 | ||
1773 | When producing a relocatable object file, R_MIPS16_26 is | |
1774 | handled mostly like R_MIPS_26. In particular, the addend is | |
1775 | stored as a straight 26-bit value in a 32-bit instruction. | |
1776 | (gas makes life simpler for itself by never adjusting a | |
1777 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1778 | always zero). However, the 32 bit instruction is stored as 2 | |
1779 | 16-bit values, rather than a single 32-bit value. In a | |
1780 | big-endian file, the result is the same; in a little-endian | |
1781 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1782 | This is so that a disassembler can recognize the jal | |
1783 | instruction. | |
1784 | ||
1785 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1786 | instruction stored as two 16-bit values. The addend A is the | |
1787 | contents of the targ26 field. The calculation is the same as | |
1788 | R_MIPS_26. When storing the calculated value, reorder the | |
1789 | immediate value as shown above, and don't forget to store the | |
1790 | value as two 16-bit values. | |
1791 | ||
1792 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1793 | defined as | |
1794 | ||
1795 | big-endian: | |
1796 | +--------+----------------------+ | |
1797 | | | | | |
1798 | | | targ26-16 | | |
1799 | |31 26|25 0| | |
1800 | +--------+----------------------+ | |
1801 | ||
1802 | little-endian: | |
1803 | +----------+------+-------------+ | |
1804 | | | | | | |
1805 | | sub1 | | sub2 | | |
1806 | |0 9|10 15|16 31| | |
1807 | +----------+--------------------+ | |
1808 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1809 | ((sub1 << 16) | sub2)). | |
1810 | ||
1811 | When producing a relocatable object file, the calculation is | |
1812 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1813 | When producing a fully linked file, the calculation is | |
1814 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1815 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1816 | ||
738e5348 RS |
1817 | The table below lists the other MIPS16 instruction relocations. |
1818 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1819 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1820 | immediate fields: | |
1821 | ||
1822 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1823 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1824 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1825 | R_MIPS16_HI16 R_MIPS_HI16 | |
1826 | R_MIPS16_LO16 R_MIPS_LO16 | |
1827 | ||
1828 | A typical instruction will have a format like this: | |
d6f16593 MR |
1829 | |
1830 | +--------------+--------------------------------+ | |
1831 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1832 | +--------------+--------------------------------+ | |
1833 | | Major | rx | ry | Imm 4:0 | | |
1834 | +--------------+--------------------------------+ | |
1835 | ||
1836 | EXTEND is the five bit value 11110. Major is the instruction | |
1837 | opcode. | |
1838 | ||
738e5348 RS |
1839 | All we need to do here is shuffle the bits appropriately. |
1840 | As above, the two 16-bit halves must be swapped on a | |
1841 | little-endian system. */ | |
1842 | ||
1843 | static inline bfd_boolean | |
1844 | mips16_reloc_p (int r_type) | |
1845 | { | |
1846 | switch (r_type) | |
1847 | { | |
1848 | case R_MIPS16_26: | |
1849 | case R_MIPS16_GPREL: | |
1850 | case R_MIPS16_GOT16: | |
1851 | case R_MIPS16_CALL16: | |
1852 | case R_MIPS16_HI16: | |
1853 | case R_MIPS16_LO16: | |
1854 | return TRUE; | |
1855 | ||
1856 | default: | |
1857 | return FALSE; | |
1858 | } | |
1859 | } | |
1860 | ||
1861 | static inline bfd_boolean | |
1862 | got16_reloc_p (int r_type) | |
1863 | { | |
1864 | return r_type == R_MIPS_GOT16 || r_type == R_MIPS16_GOT16; | |
1865 | } | |
1866 | ||
1867 | static inline bfd_boolean | |
1868 | call16_reloc_p (int r_type) | |
1869 | { | |
1870 | return r_type == R_MIPS_CALL16 || r_type == R_MIPS16_CALL16; | |
1871 | } | |
1872 | ||
1873 | static inline bfd_boolean | |
1874 | hi16_reloc_p (int r_type) | |
1875 | { | |
1876 | return r_type == R_MIPS_HI16 || r_type == R_MIPS16_HI16; | |
1877 | } | |
d6f16593 | 1878 | |
738e5348 RS |
1879 | static inline bfd_boolean |
1880 | lo16_reloc_p (int r_type) | |
1881 | { | |
1882 | return r_type == R_MIPS_LO16 || r_type == R_MIPS16_LO16; | |
1883 | } | |
1884 | ||
1885 | static inline bfd_boolean | |
1886 | mips16_call_reloc_p (int r_type) | |
1887 | { | |
1888 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
1889 | } | |
d6f16593 | 1890 | |
38a7df63 CF |
1891 | static inline bfd_boolean |
1892 | jal_reloc_p (int r_type) | |
1893 | { | |
1894 | return r_type == R_MIPS_26 || r_type == R_MIPS16_26; | |
1895 | } | |
1896 | ||
d6f16593 MR |
1897 | void |
1898 | _bfd_mips16_elf_reloc_unshuffle (bfd *abfd, int r_type, | |
1899 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1900 | { | |
1901 | bfd_vma extend, insn, val; | |
1902 | ||
738e5348 | 1903 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1904 | return; |
1905 | ||
1906 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1907 | extend = bfd_get_16 (abfd, data); | |
1908 | insn = bfd_get_16 (abfd, data + 2); | |
1909 | if (r_type == R_MIPS16_26) | |
1910 | { | |
1911 | if (jal_shuffle) | |
1912 | val = ((extend & 0xfc00) << 16) | ((extend & 0x3e0) << 11) | |
1913 | | ((extend & 0x1f) << 21) | insn; | |
1914 | else | |
1915 | val = extend << 16 | insn; | |
1916 | } | |
1917 | else | |
1918 | val = ((extend & 0xf800) << 16) | ((insn & 0xffe0) << 11) | |
1919 | | ((extend & 0x1f) << 11) | (extend & 0x7e0) | (insn & 0x1f); | |
1920 | bfd_put_32 (abfd, val, data); | |
1921 | } | |
1922 | ||
1923 | void | |
1924 | _bfd_mips16_elf_reloc_shuffle (bfd *abfd, int r_type, | |
1925 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1926 | { | |
1927 | bfd_vma extend, insn, val; | |
1928 | ||
738e5348 | 1929 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1930 | return; |
1931 | ||
1932 | val = bfd_get_32 (abfd, data); | |
1933 | if (r_type == R_MIPS16_26) | |
1934 | { | |
1935 | if (jal_shuffle) | |
1936 | { | |
1937 | insn = val & 0xffff; | |
1938 | extend = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
1939 | | ((val >> 21) & 0x1f); | |
1940 | } | |
1941 | else | |
1942 | { | |
1943 | insn = val & 0xffff; | |
1944 | extend = val >> 16; | |
1945 | } | |
1946 | } | |
1947 | else | |
1948 | { | |
1949 | insn = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
1950 | extend = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
1951 | } | |
1952 | bfd_put_16 (abfd, insn, data + 2); | |
1953 | bfd_put_16 (abfd, extend, data); | |
1954 | } | |
1955 | ||
b49e97c9 | 1956 | bfd_reloc_status_type |
9719ad41 RS |
1957 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
1958 | arelent *reloc_entry, asection *input_section, | |
1959 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
1960 | { |
1961 | bfd_vma relocation; | |
a7ebbfdf | 1962 | bfd_signed_vma val; |
30ac9238 | 1963 | bfd_reloc_status_type status; |
b49e97c9 TS |
1964 | |
1965 | if (bfd_is_com_section (symbol->section)) | |
1966 | relocation = 0; | |
1967 | else | |
1968 | relocation = symbol->value; | |
1969 | ||
1970 | relocation += symbol->section->output_section->vma; | |
1971 | relocation += symbol->section->output_offset; | |
1972 | ||
07515404 | 1973 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
1974 | return bfd_reloc_outofrange; |
1975 | ||
b49e97c9 | 1976 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
1977 | val = reloc_entry->addend; |
1978 | ||
30ac9238 | 1979 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 1980 | |
b49e97c9 | 1981 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 1982 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 1983 | an external symbol. */ |
1049f94e | 1984 | if (! relocatable |
b49e97c9 TS |
1985 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
1986 | val += relocation - gp; | |
1987 | ||
a7ebbfdf TS |
1988 | if (reloc_entry->howto->partial_inplace) |
1989 | { | |
30ac9238 RS |
1990 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
1991 | (bfd_byte *) data | |
1992 | + reloc_entry->address); | |
1993 | if (status != bfd_reloc_ok) | |
1994 | return status; | |
a7ebbfdf TS |
1995 | } |
1996 | else | |
1997 | reloc_entry->addend = val; | |
b49e97c9 | 1998 | |
1049f94e | 1999 | if (relocatable) |
b49e97c9 | 2000 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2001 | |
2002 | return bfd_reloc_ok; | |
2003 | } | |
2004 | ||
2005 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2006 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2007 | that contains the relocation field and DATA points to the start of | |
2008 | INPUT_SECTION. */ | |
2009 | ||
2010 | struct mips_hi16 | |
2011 | { | |
2012 | struct mips_hi16 *next; | |
2013 | bfd_byte *data; | |
2014 | asection *input_section; | |
2015 | arelent rel; | |
2016 | }; | |
2017 | ||
2018 | /* FIXME: This should not be a static variable. */ | |
2019 | ||
2020 | static struct mips_hi16 *mips_hi16_list; | |
2021 | ||
2022 | /* A howto special_function for REL *HI16 relocations. We can only | |
2023 | calculate the correct value once we've seen the partnering | |
2024 | *LO16 relocation, so just save the information for later. | |
2025 | ||
2026 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2027 | However, as a GNU extension, we permit an arbitrary number of | |
2028 | *HI16s to be associated with a single *LO16. This significantly | |
2029 | simplies the relocation handling in gcc. */ | |
2030 | ||
2031 | bfd_reloc_status_type | |
2032 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2033 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2034 | asection *input_section, bfd *output_bfd, | |
2035 | char **error_message ATTRIBUTE_UNUSED) | |
2036 | { | |
2037 | struct mips_hi16 *n; | |
2038 | ||
07515404 | 2039 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2040 | return bfd_reloc_outofrange; |
2041 | ||
2042 | n = bfd_malloc (sizeof *n); | |
2043 | if (n == NULL) | |
2044 | return bfd_reloc_outofrange; | |
2045 | ||
2046 | n->next = mips_hi16_list; | |
2047 | n->data = data; | |
2048 | n->input_section = input_section; | |
2049 | n->rel = *reloc_entry; | |
2050 | mips_hi16_list = n; | |
2051 | ||
2052 | if (output_bfd != NULL) | |
2053 | reloc_entry->address += input_section->output_offset; | |
2054 | ||
2055 | return bfd_reloc_ok; | |
2056 | } | |
2057 | ||
738e5348 | 2058 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2059 | like any other 16-bit relocation when applied to global symbols, but is |
2060 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2061 | ||
2062 | bfd_reloc_status_type | |
2063 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2064 | void *data, asection *input_section, | |
2065 | bfd *output_bfd, char **error_message) | |
2066 | { | |
2067 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2068 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2069 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2070 | /* The relocation is against a global symbol. */ | |
2071 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2072 | input_section, output_bfd, | |
2073 | error_message); | |
2074 | ||
2075 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2076 | input_section, output_bfd, error_message); | |
2077 | } | |
2078 | ||
2079 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2080 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2081 | any partnering high-part relocations as well. */ | |
2082 | ||
2083 | bfd_reloc_status_type | |
2084 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2085 | void *data, asection *input_section, | |
2086 | bfd *output_bfd, char **error_message) | |
2087 | { | |
2088 | bfd_vma vallo; | |
d6f16593 | 2089 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2090 | |
07515404 | 2091 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2092 | return bfd_reloc_outofrange; |
2093 | ||
d6f16593 MR |
2094 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2095 | location); | |
2096 | vallo = bfd_get_32 (abfd, location); | |
2097 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2098 | location); | |
2099 | ||
30ac9238 RS |
2100 | while (mips_hi16_list != NULL) |
2101 | { | |
2102 | bfd_reloc_status_type ret; | |
2103 | struct mips_hi16 *hi; | |
2104 | ||
2105 | hi = mips_hi16_list; | |
2106 | ||
738e5348 RS |
2107 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2108 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2109 | relocation (with a rightshift of 16). However, since GOT16 |
2110 | relocations can also be used with global symbols, their howto | |
2111 | has a rightshift of 0. */ | |
2112 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2113 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2114 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2115 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
30ac9238 RS |
2116 | |
2117 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2118 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2119 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2120 | ||
30ac9238 RS |
2121 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2122 | hi->input_section, output_bfd, | |
2123 | error_message); | |
2124 | if (ret != bfd_reloc_ok) | |
2125 | return ret; | |
2126 | ||
2127 | mips_hi16_list = hi->next; | |
2128 | free (hi); | |
2129 | } | |
2130 | ||
2131 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2132 | input_section, output_bfd, | |
2133 | error_message); | |
2134 | } | |
2135 | ||
2136 | /* A generic howto special_function. This calculates and installs the | |
2137 | relocation itself, thus avoiding the oft-discussed problems in | |
2138 | bfd_perform_relocation and bfd_install_relocation. */ | |
2139 | ||
2140 | bfd_reloc_status_type | |
2141 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2142 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2143 | asection *input_section, bfd *output_bfd, | |
2144 | char **error_message ATTRIBUTE_UNUSED) | |
2145 | { | |
2146 | bfd_signed_vma val; | |
2147 | bfd_reloc_status_type status; | |
2148 | bfd_boolean relocatable; | |
2149 | ||
2150 | relocatable = (output_bfd != NULL); | |
2151 | ||
07515404 | 2152 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2153 | return bfd_reloc_outofrange; |
2154 | ||
2155 | /* Build up the field adjustment in VAL. */ | |
2156 | val = 0; | |
2157 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2158 | { | |
2159 | /* Either we're calculating the final field value or we have a | |
2160 | relocation against a section symbol. Add in the section's | |
2161 | offset or address. */ | |
2162 | val += symbol->section->output_section->vma; | |
2163 | val += symbol->section->output_offset; | |
2164 | } | |
2165 | ||
2166 | if (!relocatable) | |
2167 | { | |
2168 | /* We're calculating the final field value. Add in the symbol's value | |
2169 | and, if pc-relative, subtract the address of the field itself. */ | |
2170 | val += symbol->value; | |
2171 | if (reloc_entry->howto->pc_relative) | |
2172 | { | |
2173 | val -= input_section->output_section->vma; | |
2174 | val -= input_section->output_offset; | |
2175 | val -= reloc_entry->address; | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2180 | in the output file, and if the relocation uses a separate addend, | |
2181 | we just need to add VAL to that addend. Otherwise we need to add | |
2182 | VAL to the relocation field itself. */ | |
2183 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2184 | reloc_entry->addend += val; | |
2185 | else | |
2186 | { | |
d6f16593 MR |
2187 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2188 | ||
30ac9238 RS |
2189 | /* Add in the separate addend, if any. */ |
2190 | val += reloc_entry->addend; | |
2191 | ||
2192 | /* Add VAL to the relocation field. */ | |
d6f16593 MR |
2193 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2194 | location); | |
30ac9238 | 2195 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 MR |
2196 | location); |
2197 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2198 | location); | |
2199 | ||
30ac9238 RS |
2200 | if (status != bfd_reloc_ok) |
2201 | return status; | |
2202 | } | |
2203 | ||
2204 | if (relocatable) | |
2205 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2206 | |
2207 | return bfd_reloc_ok; | |
2208 | } | |
2209 | \f | |
2210 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2211 | on the equivalence of the two elements of the union. */ | |
2212 | ||
2213 | static void | |
9719ad41 RS |
2214 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2215 | Elf32_gptab *in) | |
b49e97c9 TS |
2216 | { |
2217 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2218 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2219 | } | |
2220 | ||
2221 | static void | |
9719ad41 RS |
2222 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2223 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2224 | { |
2225 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2226 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2227 | } | |
2228 | ||
2229 | static void | |
9719ad41 RS |
2230 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2231 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2232 | { |
2233 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2234 | H_PUT_32 (abfd, in->num, ex->num); | |
2235 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2236 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2237 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2238 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2239 | } | |
2240 | ||
2241 | static void | |
9719ad41 RS |
2242 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2243 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2244 | { |
2245 | unsigned long l; | |
2246 | ||
2247 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2248 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2249 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2250 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2251 | H_PUT_32 (abfd, l, ex->info); | |
2252 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2253 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2254 | } | |
b49e97c9 TS |
2255 | \f |
2256 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2257 | routines swap this structure in and out. They are used outside of | |
2258 | BFD, so they are globally visible. */ | |
2259 | ||
2260 | void | |
9719ad41 RS |
2261 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2262 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2263 | { |
2264 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2265 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2266 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2267 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2268 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2269 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2270 | } | |
2271 | ||
2272 | void | |
9719ad41 RS |
2273 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2274 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2275 | { |
2276 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2277 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2278 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2279 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2280 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2281 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2282 | } | |
2283 | ||
2284 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2285 | information in an Elf64_Reginfo structure. These routines swap | |
2286 | them in and out. They are globally visible because they are used | |
2287 | outside of BFD. These routines are here so that gas can call them | |
2288 | without worrying about whether the 64 bit ABI has been included. */ | |
2289 | ||
2290 | void | |
9719ad41 RS |
2291 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2292 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2293 | { |
2294 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2295 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2296 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2297 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2298 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2299 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2300 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2301 | } | |
2302 | ||
2303 | void | |
9719ad41 RS |
2304 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2305 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2306 | { |
2307 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2308 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2309 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2310 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2311 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2312 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2313 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2314 | } | |
2315 | ||
2316 | /* Swap in an options header. */ | |
2317 | ||
2318 | void | |
9719ad41 RS |
2319 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2320 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2321 | { |
2322 | in->kind = H_GET_8 (abfd, ex->kind); | |
2323 | in->size = H_GET_8 (abfd, ex->size); | |
2324 | in->section = H_GET_16 (abfd, ex->section); | |
2325 | in->info = H_GET_32 (abfd, ex->info); | |
2326 | } | |
2327 | ||
2328 | /* Swap out an options header. */ | |
2329 | ||
2330 | void | |
9719ad41 RS |
2331 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2332 | Elf_External_Options *ex) | |
b49e97c9 TS |
2333 | { |
2334 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2335 | H_PUT_8 (abfd, in->size, ex->size); | |
2336 | H_PUT_16 (abfd, in->section, ex->section); | |
2337 | H_PUT_32 (abfd, in->info, ex->info); | |
2338 | } | |
2339 | \f | |
2340 | /* This function is called via qsort() to sort the dynamic relocation | |
2341 | entries by increasing r_symndx value. */ | |
2342 | ||
2343 | static int | |
9719ad41 | 2344 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2345 | { |
947216bf AM |
2346 | Elf_Internal_Rela int_reloc1; |
2347 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2348 | int diff; |
b49e97c9 | 2349 | |
947216bf AM |
2350 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2351 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2352 | |
6870500c RS |
2353 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2354 | if (diff != 0) | |
2355 | return diff; | |
2356 | ||
2357 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2358 | return -1; | |
2359 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2360 | return 1; | |
2361 | return 0; | |
b49e97c9 TS |
2362 | } |
2363 | ||
f4416af6 AO |
2364 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2365 | ||
2366 | static int | |
7e3102a7 AM |
2367 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2368 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2369 | { |
7e3102a7 | 2370 | #ifdef BFD64 |
f4416af6 AO |
2371 | Elf_Internal_Rela int_reloc1[3]; |
2372 | Elf_Internal_Rela int_reloc2[3]; | |
2373 | ||
2374 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2375 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2376 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2377 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2378 | ||
6870500c RS |
2379 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2380 | return -1; | |
2381 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2382 | return 1; | |
2383 | ||
2384 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2385 | return -1; | |
2386 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2387 | return 1; | |
2388 | return 0; | |
7e3102a7 AM |
2389 | #else |
2390 | abort (); | |
2391 | #endif | |
f4416af6 AO |
2392 | } |
2393 | ||
2394 | ||
b49e97c9 TS |
2395 | /* This routine is used to write out ECOFF debugging external symbol |
2396 | information. It is called via mips_elf_link_hash_traverse. The | |
2397 | ECOFF external symbol information must match the ELF external | |
2398 | symbol information. Unfortunately, at this point we don't know | |
2399 | whether a symbol is required by reloc information, so the two | |
2400 | tables may wind up being different. We must sort out the external | |
2401 | symbol information before we can set the final size of the .mdebug | |
2402 | section, and we must set the size of the .mdebug section before we | |
2403 | can relocate any sections, and we can't know which symbols are | |
2404 | required by relocation until we relocate the sections. | |
2405 | Fortunately, it is relatively unlikely that any symbol will be | |
2406 | stripped but required by a reloc. In particular, it can not happen | |
2407 | when generating a final executable. */ | |
2408 | ||
b34976b6 | 2409 | static bfd_boolean |
9719ad41 | 2410 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2411 | { |
9719ad41 | 2412 | struct extsym_info *einfo = data; |
b34976b6 | 2413 | bfd_boolean strip; |
b49e97c9 TS |
2414 | asection *sec, *output_section; |
2415 | ||
2416 | if (h->root.root.type == bfd_link_hash_warning) | |
2417 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
2418 | ||
2419 | if (h->root.indx == -2) | |
b34976b6 | 2420 | strip = FALSE; |
f5385ebf | 2421 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2422 | || h->root.ref_dynamic |
2423 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2424 | && !h->root.def_regular |
2425 | && !h->root.ref_regular) | |
b34976b6 | 2426 | strip = TRUE; |
b49e97c9 TS |
2427 | else if (einfo->info->strip == strip_all |
2428 | || (einfo->info->strip == strip_some | |
2429 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2430 | h->root.root.root.string, | |
b34976b6 AM |
2431 | FALSE, FALSE) == NULL)) |
2432 | strip = TRUE; | |
b49e97c9 | 2433 | else |
b34976b6 | 2434 | strip = FALSE; |
b49e97c9 TS |
2435 | |
2436 | if (strip) | |
b34976b6 | 2437 | return TRUE; |
b49e97c9 TS |
2438 | |
2439 | if (h->esym.ifd == -2) | |
2440 | { | |
2441 | h->esym.jmptbl = 0; | |
2442 | h->esym.cobol_main = 0; | |
2443 | h->esym.weakext = 0; | |
2444 | h->esym.reserved = 0; | |
2445 | h->esym.ifd = ifdNil; | |
2446 | h->esym.asym.value = 0; | |
2447 | h->esym.asym.st = stGlobal; | |
2448 | ||
2449 | if (h->root.root.type == bfd_link_hash_undefined | |
2450 | || h->root.root.type == bfd_link_hash_undefweak) | |
2451 | { | |
2452 | const char *name; | |
2453 | ||
2454 | /* Use undefined class. Also, set class and type for some | |
2455 | special symbols. */ | |
2456 | name = h->root.root.root.string; | |
2457 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2458 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2459 | { | |
2460 | h->esym.asym.sc = scData; | |
2461 | h->esym.asym.st = stLabel; | |
2462 | h->esym.asym.value = 0; | |
2463 | } | |
2464 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2465 | { | |
2466 | h->esym.asym.sc = scAbs; | |
2467 | h->esym.asym.st = stLabel; | |
2468 | h->esym.asym.value = | |
2469 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2470 | } | |
4a14403c | 2471 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
2472 | { |
2473 | h->esym.asym.sc = scAbs; | |
2474 | h->esym.asym.st = stLabel; | |
2475 | h->esym.asym.value = elf_gp (einfo->abfd); | |
2476 | } | |
2477 | else | |
2478 | h->esym.asym.sc = scUndefined; | |
2479 | } | |
2480 | else if (h->root.root.type != bfd_link_hash_defined | |
2481 | && h->root.root.type != bfd_link_hash_defweak) | |
2482 | h->esym.asym.sc = scAbs; | |
2483 | else | |
2484 | { | |
2485 | const char *name; | |
2486 | ||
2487 | sec = h->root.root.u.def.section; | |
2488 | output_section = sec->output_section; | |
2489 | ||
2490 | /* When making a shared library and symbol h is the one from | |
2491 | the another shared library, OUTPUT_SECTION may be null. */ | |
2492 | if (output_section == NULL) | |
2493 | h->esym.asym.sc = scUndefined; | |
2494 | else | |
2495 | { | |
2496 | name = bfd_section_name (output_section->owner, output_section); | |
2497 | ||
2498 | if (strcmp (name, ".text") == 0) | |
2499 | h->esym.asym.sc = scText; | |
2500 | else if (strcmp (name, ".data") == 0) | |
2501 | h->esym.asym.sc = scData; | |
2502 | else if (strcmp (name, ".sdata") == 0) | |
2503 | h->esym.asym.sc = scSData; | |
2504 | else if (strcmp (name, ".rodata") == 0 | |
2505 | || strcmp (name, ".rdata") == 0) | |
2506 | h->esym.asym.sc = scRData; | |
2507 | else if (strcmp (name, ".bss") == 0) | |
2508 | h->esym.asym.sc = scBss; | |
2509 | else if (strcmp (name, ".sbss") == 0) | |
2510 | h->esym.asym.sc = scSBss; | |
2511 | else if (strcmp (name, ".init") == 0) | |
2512 | h->esym.asym.sc = scInit; | |
2513 | else if (strcmp (name, ".fini") == 0) | |
2514 | h->esym.asym.sc = scFini; | |
2515 | else | |
2516 | h->esym.asym.sc = scAbs; | |
2517 | } | |
2518 | } | |
2519 | ||
2520 | h->esym.asym.reserved = 0; | |
2521 | h->esym.asym.index = indexNil; | |
2522 | } | |
2523 | ||
2524 | if (h->root.root.type == bfd_link_hash_common) | |
2525 | h->esym.asym.value = h->root.root.u.c.size; | |
2526 | else if (h->root.root.type == bfd_link_hash_defined | |
2527 | || h->root.root.type == bfd_link_hash_defweak) | |
2528 | { | |
2529 | if (h->esym.asym.sc == scCommon) | |
2530 | h->esym.asym.sc = scBss; | |
2531 | else if (h->esym.asym.sc == scSCommon) | |
2532 | h->esym.asym.sc = scSBss; | |
2533 | ||
2534 | sec = h->root.root.u.def.section; | |
2535 | output_section = sec->output_section; | |
2536 | if (output_section != NULL) | |
2537 | h->esym.asym.value = (h->root.root.u.def.value | |
2538 | + sec->output_offset | |
2539 | + output_section->vma); | |
2540 | else | |
2541 | h->esym.asym.value = 0; | |
2542 | } | |
33bb52fb | 2543 | else |
b49e97c9 TS |
2544 | { |
2545 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2546 | |
2547 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2548 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2549 | |
33bb52fb | 2550 | if (hd->needs_lazy_stub) |
b49e97c9 TS |
2551 | { |
2552 | /* Set type and value for a symbol with a function stub. */ | |
2553 | h->esym.asym.st = stProc; | |
2554 | sec = hd->root.root.u.def.section; | |
2555 | if (sec == NULL) | |
2556 | h->esym.asym.value = 0; | |
2557 | else | |
2558 | { | |
2559 | output_section = sec->output_section; | |
2560 | if (output_section != NULL) | |
2561 | h->esym.asym.value = (hd->root.plt.offset | |
2562 | + sec->output_offset | |
2563 | + output_section->vma); | |
2564 | else | |
2565 | h->esym.asym.value = 0; | |
2566 | } | |
b49e97c9 TS |
2567 | } |
2568 | } | |
2569 | ||
2570 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2571 | h->root.root.root.string, | |
2572 | &h->esym)) | |
2573 | { | |
b34976b6 AM |
2574 | einfo->failed = TRUE; |
2575 | return FALSE; | |
b49e97c9 TS |
2576 | } |
2577 | ||
b34976b6 | 2578 | return TRUE; |
b49e97c9 TS |
2579 | } |
2580 | ||
2581 | /* A comparison routine used to sort .gptab entries. */ | |
2582 | ||
2583 | static int | |
9719ad41 | 2584 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2585 | { |
9719ad41 RS |
2586 | const Elf32_gptab *a1 = p1; |
2587 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2588 | |
2589 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2590 | } | |
2591 | \f | |
b15e6682 | 2592 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2593 | |
2594 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2595 | hash number. */ | |
2596 | ||
2597 | static INLINE hashval_t | |
9719ad41 | 2598 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2599 | { |
2600 | #ifdef BFD64 | |
2601 | return addr + (addr >> 32); | |
2602 | #else | |
2603 | return addr; | |
2604 | #endif | |
2605 | } | |
2606 | ||
2607 | /* got_entries only match if they're identical, except for gotidx, so | |
2608 | use all fields to compute the hash, and compare the appropriate | |
2609 | union members. */ | |
2610 | ||
b15e6682 | 2611 | static hashval_t |
9719ad41 | 2612 | mips_elf_got_entry_hash (const void *entry_) |
b15e6682 AO |
2613 | { |
2614 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2615 | ||
38985a1c | 2616 | return entry->symndx |
0f20cc35 | 2617 | + ((entry->tls_type & GOT_TLS_LDM) << 17) |
f4416af6 | 2618 | + (! entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
38985a1c AO |
2619 | : entry->abfd->id |
2620 | + (entry->symndx >= 0 ? mips_elf_hash_bfd_vma (entry->d.addend) | |
2621 | : entry->d.h->root.root.root.hash)); | |
b15e6682 AO |
2622 | } |
2623 | ||
2624 | static int | |
9719ad41 | 2625 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
b15e6682 AO |
2626 | { |
2627 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2628 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2629 | ||
0f20cc35 DJ |
2630 | /* An LDM entry can only match another LDM entry. */ |
2631 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2632 | return 0; | |
2633 | ||
b15e6682 | 2634 | return e1->abfd == e2->abfd && e1->symndx == e2->symndx |
f4416af6 AO |
2635 | && (! e1->abfd ? e1->d.address == e2->d.address |
2636 | : e1->symndx >= 0 ? e1->d.addend == e2->d.addend | |
2637 | : e1->d.h == e2->d.h); | |
2638 | } | |
2639 | ||
2640 | /* multi_got_entries are still a match in the case of global objects, | |
2641 | even if the input bfd in which they're referenced differs, so the | |
2642 | hash computation and compare functions are adjusted | |
2643 | accordingly. */ | |
2644 | ||
2645 | static hashval_t | |
9719ad41 | 2646 | mips_elf_multi_got_entry_hash (const void *entry_) |
f4416af6 AO |
2647 | { |
2648 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2649 | ||
2650 | return entry->symndx | |
2651 | + (! entry->abfd | |
2652 | ? mips_elf_hash_bfd_vma (entry->d.address) | |
2653 | : entry->symndx >= 0 | |
0f20cc35 DJ |
2654 | ? ((entry->tls_type & GOT_TLS_LDM) |
2655 | ? (GOT_TLS_LDM << 17) | |
2656 | : (entry->abfd->id | |
2657 | + mips_elf_hash_bfd_vma (entry->d.addend))) | |
f4416af6 AO |
2658 | : entry->d.h->root.root.root.hash); |
2659 | } | |
2660 | ||
2661 | static int | |
9719ad41 | 2662 | mips_elf_multi_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2663 | { |
2664 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2665 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2666 | ||
0f20cc35 DJ |
2667 | /* Any two LDM entries match. */ |
2668 | if (e1->tls_type & e2->tls_type & GOT_TLS_LDM) | |
2669 | return 1; | |
2670 | ||
2671 | /* Nothing else matches an LDM entry. */ | |
2672 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2673 | return 0; | |
2674 | ||
f4416af6 AO |
2675 | return e1->symndx == e2->symndx |
2676 | && (e1->symndx >= 0 ? e1->abfd == e2->abfd && e1->d.addend == e2->d.addend | |
2677 | : e1->abfd == NULL || e2->abfd == NULL | |
2678 | ? e1->abfd == e2->abfd && e1->d.address == e2->d.address | |
2679 | : e1->d.h == e2->d.h); | |
b15e6682 | 2680 | } |
c224138d RS |
2681 | |
2682 | static hashval_t | |
2683 | mips_got_page_entry_hash (const void *entry_) | |
2684 | { | |
2685 | const struct mips_got_page_entry *entry; | |
2686 | ||
2687 | entry = (const struct mips_got_page_entry *) entry_; | |
2688 | return entry->abfd->id + entry->symndx; | |
2689 | } | |
2690 | ||
2691 | static int | |
2692 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2693 | { | |
2694 | const struct mips_got_page_entry *entry1, *entry2; | |
2695 | ||
2696 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2697 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
2698 | return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx; | |
2699 | } | |
b15e6682 | 2700 | \f |
0a44bf69 RS |
2701 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2702 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2703 | if creation fails. */ | |
f4416af6 AO |
2704 | |
2705 | static asection * | |
0a44bf69 | 2706 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2707 | { |
0a44bf69 | 2708 | const char *dname; |
f4416af6 | 2709 | asection *sreloc; |
0a44bf69 | 2710 | bfd *dynobj; |
f4416af6 | 2711 | |
0a44bf69 RS |
2712 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2713 | dynobj = elf_hash_table (info)->dynobj; | |
f4416af6 AO |
2714 | sreloc = bfd_get_section_by_name (dynobj, dname); |
2715 | if (sreloc == NULL && create_p) | |
2716 | { | |
3496cb2a L |
2717 | sreloc = bfd_make_section_with_flags (dynobj, dname, |
2718 | (SEC_ALLOC | |
2719 | | SEC_LOAD | |
2720 | | SEC_HAS_CONTENTS | |
2721 | | SEC_IN_MEMORY | |
2722 | | SEC_LINKER_CREATED | |
2723 | | SEC_READONLY)); | |
f4416af6 | 2724 | if (sreloc == NULL |
f4416af6 | 2725 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2726 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2727 | return NULL; |
2728 | } | |
2729 | return sreloc; | |
2730 | } | |
2731 | ||
0f20cc35 DJ |
2732 | /* Count the number of relocations needed for a TLS GOT entry, with |
2733 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2734 | is NULL). */ | |
2735 | ||
2736 | static int | |
2737 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2738 | struct elf_link_hash_entry *h) | |
2739 | { | |
2740 | int indx = 0; | |
2741 | int ret = 0; | |
2742 | bfd_boolean need_relocs = FALSE; | |
2743 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2744 | ||
2745 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2746 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
2747 | indx = h->dynindx; | |
2748 | ||
2749 | if ((info->shared || indx != 0) | |
2750 | && (h == NULL | |
2751 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2752 | || h->root.type != bfd_link_hash_undefweak)) | |
2753 | need_relocs = TRUE; | |
2754 | ||
2755 | if (!need_relocs) | |
2756 | return FALSE; | |
2757 | ||
2758 | if (tls_type & GOT_TLS_GD) | |
2759 | { | |
2760 | ret++; | |
2761 | if (indx != 0) | |
2762 | ret++; | |
2763 | } | |
2764 | ||
2765 | if (tls_type & GOT_TLS_IE) | |
2766 | ret++; | |
2767 | ||
2768 | if ((tls_type & GOT_TLS_LDM) && info->shared) | |
2769 | ret++; | |
2770 | ||
2771 | return ret; | |
2772 | } | |
2773 | ||
2774 | /* Count the number of TLS relocations required for the GOT entry in | |
2775 | ARG1, if it describes a local symbol. */ | |
2776 | ||
2777 | static int | |
2778 | mips_elf_count_local_tls_relocs (void **arg1, void *arg2) | |
2779 | { | |
2780 | struct mips_got_entry *entry = * (struct mips_got_entry **) arg1; | |
2781 | struct mips_elf_count_tls_arg *arg = arg2; | |
2782 | ||
2783 | if (entry->abfd != NULL && entry->symndx != -1) | |
2784 | arg->needed += mips_tls_got_relocs (arg->info, entry->tls_type, NULL); | |
2785 | ||
2786 | return 1; | |
2787 | } | |
2788 | ||
2789 | /* Count the number of TLS GOT entries required for the global (or | |
2790 | forced-local) symbol in ARG1. */ | |
2791 | ||
2792 | static int | |
2793 | mips_elf_count_global_tls_entries (void *arg1, void *arg2) | |
2794 | { | |
2795 | struct mips_elf_link_hash_entry *hm | |
2796 | = (struct mips_elf_link_hash_entry *) arg1; | |
2797 | struct mips_elf_count_tls_arg *arg = arg2; | |
2798 | ||
2799 | if (hm->tls_type & GOT_TLS_GD) | |
2800 | arg->needed += 2; | |
2801 | if (hm->tls_type & GOT_TLS_IE) | |
2802 | arg->needed += 1; | |
2803 | ||
2804 | return 1; | |
2805 | } | |
2806 | ||
2807 | /* Count the number of TLS relocations required for the global (or | |
2808 | forced-local) symbol in ARG1. */ | |
2809 | ||
2810 | static int | |
2811 | mips_elf_count_global_tls_relocs (void *arg1, void *arg2) | |
2812 | { | |
2813 | struct mips_elf_link_hash_entry *hm | |
2814 | = (struct mips_elf_link_hash_entry *) arg1; | |
2815 | struct mips_elf_count_tls_arg *arg = arg2; | |
2816 | ||
2817 | arg->needed += mips_tls_got_relocs (arg->info, hm->tls_type, &hm->root); | |
2818 | ||
2819 | return 1; | |
2820 | } | |
2821 | ||
2822 | /* Output a simple dynamic relocation into SRELOC. */ | |
2823 | ||
2824 | static void | |
2825 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
2826 | asection *sreloc, | |
861fb55a | 2827 | unsigned long reloc_index, |
0f20cc35 DJ |
2828 | unsigned long indx, |
2829 | int r_type, | |
2830 | bfd_vma offset) | |
2831 | { | |
2832 | Elf_Internal_Rela rel[3]; | |
2833 | ||
2834 | memset (rel, 0, sizeof (rel)); | |
2835 | ||
2836 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
2837 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
2838 | ||
2839 | if (ABI_64_P (output_bfd)) | |
2840 | { | |
2841 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
2842 | (output_bfd, &rel[0], | |
2843 | (sreloc->contents | |
861fb55a | 2844 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
2845 | } |
2846 | else | |
2847 | bfd_elf32_swap_reloc_out | |
2848 | (output_bfd, &rel[0], | |
2849 | (sreloc->contents | |
861fb55a | 2850 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
2851 | } |
2852 | ||
2853 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
2854 | ||
2855 | static void | |
2856 | mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset, | |
2857 | unsigned char *tls_type_p, | |
2858 | struct bfd_link_info *info, | |
2859 | struct mips_elf_link_hash_entry *h, | |
2860 | bfd_vma value) | |
2861 | { | |
23cc69b6 | 2862 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
2863 | int indx; |
2864 | asection *sreloc, *sgot; | |
2865 | bfd_vma offset, offset2; | |
0f20cc35 DJ |
2866 | bfd_boolean need_relocs = FALSE; |
2867 | ||
23cc69b6 | 2868 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
2869 | if (htab == NULL) |
2870 | return; | |
2871 | ||
23cc69b6 | 2872 | sgot = htab->sgot; |
0f20cc35 DJ |
2873 | |
2874 | indx = 0; | |
2875 | if (h != NULL) | |
2876 | { | |
2877 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2878 | ||
2879 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
2880 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
2881 | indx = h->root.dynindx; | |
2882 | } | |
2883 | ||
2884 | if (*tls_type_p & GOT_TLS_DONE) | |
2885 | return; | |
2886 | ||
2887 | if ((info->shared || indx != 0) | |
2888 | && (h == NULL | |
2889 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
2890 | || h->root.type != bfd_link_hash_undefweak)) | |
2891 | need_relocs = TRUE; | |
2892 | ||
2893 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
2894 | be defined at all; assume that the value doesn't matter in that | |
2895 | case. Otherwise complain if we would use the value. */ | |
2896 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
2897 | || h->root.root.type == bfd_link_hash_undefweak); | |
2898 | ||
2899 | /* Emit necessary relocations. */ | |
0a44bf69 | 2900 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
0f20cc35 DJ |
2901 | |
2902 | /* General Dynamic. */ | |
2903 | if (*tls_type_p & GOT_TLS_GD) | |
2904 | { | |
2905 | offset = got_offset; | |
2906 | offset2 = offset + MIPS_ELF_GOT_SIZE (abfd); | |
2907 | ||
2908 | if (need_relocs) | |
2909 | { | |
2910 | mips_elf_output_dynamic_relocation | |
861fb55a | 2911 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2912 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
2913 | sgot->output_offset + sgot->output_section->vma + offset); | |
2914 | ||
2915 | if (indx) | |
2916 | mips_elf_output_dynamic_relocation | |
861fb55a | 2917 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2918 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
2919 | sgot->output_offset + sgot->output_section->vma + offset2); | |
2920 | else | |
2921 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2922 | sgot->contents + offset2); | |
2923 | } | |
2924 | else | |
2925 | { | |
2926 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2927 | sgot->contents + offset); | |
2928 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2929 | sgot->contents + offset2); | |
2930 | } | |
2931 | ||
2932 | got_offset += 2 * MIPS_ELF_GOT_SIZE (abfd); | |
2933 | } | |
2934 | ||
2935 | /* Initial Exec model. */ | |
2936 | if (*tls_type_p & GOT_TLS_IE) | |
2937 | { | |
2938 | offset = got_offset; | |
2939 | ||
2940 | if (need_relocs) | |
2941 | { | |
2942 | if (indx == 0) | |
2943 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
2944 | sgot->contents + offset); | |
2945 | else | |
2946 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2947 | sgot->contents + offset); | |
2948 | ||
2949 | mips_elf_output_dynamic_relocation | |
861fb55a | 2950 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2951 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
2952 | sgot->output_offset + sgot->output_section->vma + offset); | |
2953 | } | |
2954 | else | |
2955 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
2956 | sgot->contents + offset); | |
2957 | } | |
2958 | ||
2959 | if (*tls_type_p & GOT_TLS_LDM) | |
2960 | { | |
2961 | /* The initial offset is zero, and the LD offsets will include the | |
2962 | bias by DTP_OFFSET. */ | |
2963 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2964 | sgot->contents + got_offset | |
2965 | + MIPS_ELF_GOT_SIZE (abfd)); | |
2966 | ||
2967 | if (!info->shared) | |
2968 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2969 | sgot->contents + got_offset); | |
2970 | else | |
2971 | mips_elf_output_dynamic_relocation | |
861fb55a | 2972 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
2973 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
2974 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
2975 | } | |
2976 | ||
2977 | *tls_type_p |= GOT_TLS_DONE; | |
2978 | } | |
2979 | ||
2980 | /* Return the GOT index to use for a relocation of type R_TYPE against | |
2981 | a symbol accessed using TLS_TYPE models. The GOT entries for this | |
2982 | symbol in this GOT start at GOT_INDEX. This function initializes the | |
2983 | GOT entries and corresponding relocations. */ | |
2984 | ||
2985 | static bfd_vma | |
2986 | mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type, | |
2987 | int r_type, struct bfd_link_info *info, | |
2988 | struct mips_elf_link_hash_entry *h, bfd_vma symbol) | |
2989 | { | |
2990 | BFD_ASSERT (r_type == R_MIPS_TLS_GOTTPREL || r_type == R_MIPS_TLS_GD | |
2991 | || r_type == R_MIPS_TLS_LDM); | |
2992 | ||
2993 | mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol); | |
2994 | ||
2995 | if (r_type == R_MIPS_TLS_GOTTPREL) | |
2996 | { | |
2997 | BFD_ASSERT (*tls_type & GOT_TLS_IE); | |
2998 | if (*tls_type & GOT_TLS_GD) | |
2999 | return got_index + 2 * MIPS_ELF_GOT_SIZE (abfd); | |
3000 | else | |
3001 | return got_index; | |
3002 | } | |
3003 | ||
3004 | if (r_type == R_MIPS_TLS_GD) | |
3005 | { | |
3006 | BFD_ASSERT (*tls_type & GOT_TLS_GD); | |
3007 | return got_index; | |
3008 | } | |
3009 | ||
3010 | if (r_type == R_MIPS_TLS_LDM) | |
3011 | { | |
3012 | BFD_ASSERT (*tls_type & GOT_TLS_LDM); | |
3013 | return got_index; | |
3014 | } | |
3015 | ||
3016 | return got_index; | |
3017 | } | |
3018 | ||
0a44bf69 RS |
3019 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3020 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3021 | will be negative. */ | |
3022 | ||
3023 | static bfd_vma | |
3024 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3025 | struct elf_link_hash_entry *h) | |
3026 | { | |
3027 | bfd_vma plt_index, got_address, got_value; | |
3028 | struct mips_elf_link_hash_table *htab; | |
3029 | ||
3030 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3031 | BFD_ASSERT (htab != NULL); |
3032 | ||
0a44bf69 RS |
3033 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); |
3034 | ||
861fb55a DJ |
3035 | /* This function only works for VxWorks, because a non-VxWorks .got.plt |
3036 | section starts with reserved entries. */ | |
3037 | BFD_ASSERT (htab->is_vxworks); | |
3038 | ||
0a44bf69 RS |
3039 | /* Calculate the index of the symbol's PLT entry. */ |
3040 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
3041 | ||
3042 | /* Calculate the address of the associated .got.plt entry. */ | |
3043 | got_address = (htab->sgotplt->output_section->vma | |
3044 | + htab->sgotplt->output_offset | |
3045 | + plt_index * 4); | |
3046 | ||
3047 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3048 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3049 | + htab->root.hgot->root.u.def.section->output_offset | |
3050 | + htab->root.hgot->root.u.def.value); | |
3051 | ||
3052 | return got_address - got_value; | |
3053 | } | |
3054 | ||
5c18022e | 3055 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3056 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3057 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3058 | offset can be found. */ | |
b49e97c9 TS |
3059 | |
3060 | static bfd_vma | |
9719ad41 | 3061 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3062 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3063 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3064 | { |
a8028dd0 | 3065 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3066 | struct mips_got_entry *entry; |
b49e97c9 | 3067 | |
a8028dd0 | 3068 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3069 | BFD_ASSERT (htab != NULL); |
3070 | ||
a8028dd0 RS |
3071 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3072 | r_symndx, h, r_type); | |
0f20cc35 | 3073 | if (!entry) |
b15e6682 | 3074 | return MINUS_ONE; |
0f20cc35 DJ |
3075 | |
3076 | if (TLS_RELOC_P (r_type)) | |
ead49a57 | 3077 | { |
a8028dd0 | 3078 | if (entry->symndx == -1 && htab->got_info->next == NULL) |
ead49a57 RS |
3079 | /* A type (3) entry in the single-GOT case. We use the symbol's |
3080 | hash table entry to track the index. */ | |
3081 | return mips_tls_got_index (abfd, h->tls_got_offset, &h->tls_type, | |
3082 | r_type, info, h, value); | |
3083 | else | |
3084 | return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type, | |
3085 | r_type, info, h, value); | |
3086 | } | |
0f20cc35 DJ |
3087 | else |
3088 | return entry->gotidx; | |
b49e97c9 TS |
3089 | } |
3090 | ||
3091 | /* Returns the GOT index for the global symbol indicated by H. */ | |
3092 | ||
3093 | static bfd_vma | |
0f20cc35 DJ |
3094 | mips_elf_global_got_index (bfd *abfd, bfd *ibfd, struct elf_link_hash_entry *h, |
3095 | int r_type, struct bfd_link_info *info) | |
b49e97c9 | 3096 | { |
a8028dd0 | 3097 | struct mips_elf_link_hash_table *htab; |
91d6fa6a | 3098 | bfd_vma got_index; |
f4416af6 | 3099 | struct mips_got_info *g, *gg; |
d0c7ff07 | 3100 | long global_got_dynindx = 0; |
b49e97c9 | 3101 | |
a8028dd0 | 3102 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3103 | BFD_ASSERT (htab != NULL); |
3104 | ||
a8028dd0 | 3105 | gg = g = htab->got_info; |
f4416af6 AO |
3106 | if (g->bfd2got && ibfd) |
3107 | { | |
3108 | struct mips_got_entry e, *p; | |
143d77c5 | 3109 | |
f4416af6 AO |
3110 | BFD_ASSERT (h->dynindx >= 0); |
3111 | ||
3112 | g = mips_elf_got_for_ibfd (g, ibfd); | |
0f20cc35 | 3113 | if (g->next != gg || TLS_RELOC_P (r_type)) |
f4416af6 AO |
3114 | { |
3115 | e.abfd = ibfd; | |
3116 | e.symndx = -1; | |
3117 | e.d.h = (struct mips_elf_link_hash_entry *)h; | |
0f20cc35 | 3118 | e.tls_type = 0; |
f4416af6 | 3119 | |
9719ad41 | 3120 | p = htab_find (g->got_entries, &e); |
f4416af6 AO |
3121 | |
3122 | BFD_ASSERT (p->gotidx > 0); | |
0f20cc35 DJ |
3123 | |
3124 | if (TLS_RELOC_P (r_type)) | |
3125 | { | |
3126 | bfd_vma value = MINUS_ONE; | |
3127 | if ((h->root.type == bfd_link_hash_defined | |
3128 | || h->root.type == bfd_link_hash_defweak) | |
3129 | && h->root.u.def.section->output_section) | |
3130 | value = (h->root.u.def.value | |
3131 | + h->root.u.def.section->output_offset | |
3132 | + h->root.u.def.section->output_section->vma); | |
3133 | ||
3134 | return mips_tls_got_index (abfd, p->gotidx, &p->tls_type, r_type, | |
3135 | info, e.d.h, value); | |
3136 | } | |
3137 | else | |
3138 | return p->gotidx; | |
f4416af6 AO |
3139 | } |
3140 | } | |
3141 | ||
3142 | if (gg->global_gotsym != NULL) | |
3143 | global_got_dynindx = gg->global_gotsym->dynindx; | |
b49e97c9 | 3144 | |
0f20cc35 DJ |
3145 | if (TLS_RELOC_P (r_type)) |
3146 | { | |
3147 | struct mips_elf_link_hash_entry *hm | |
3148 | = (struct mips_elf_link_hash_entry *) h; | |
3149 | bfd_vma value = MINUS_ONE; | |
3150 | ||
3151 | if ((h->root.type == bfd_link_hash_defined | |
3152 | || h->root.type == bfd_link_hash_defweak) | |
3153 | && h->root.u.def.section->output_section) | |
3154 | value = (h->root.u.def.value | |
3155 | + h->root.u.def.section->output_offset | |
3156 | + h->root.u.def.section->output_section->vma); | |
3157 | ||
91d6fa6a NC |
3158 | got_index = mips_tls_got_index (abfd, hm->tls_got_offset, &hm->tls_type, |
3159 | r_type, info, hm, value); | |
0f20cc35 DJ |
3160 | } |
3161 | else | |
3162 | { | |
3163 | /* Once we determine the global GOT entry with the lowest dynamic | |
3164 | symbol table index, we must put all dynamic symbols with greater | |
3165 | indices into the GOT. That makes it easy to calculate the GOT | |
3166 | offset. */ | |
3167 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
91d6fa6a NC |
3168 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) |
3169 | * MIPS_ELF_GOT_SIZE (abfd)); | |
0f20cc35 | 3170 | } |
91d6fa6a | 3171 | BFD_ASSERT (got_index < htab->sgot->size); |
b49e97c9 | 3172 | |
91d6fa6a | 3173 | return got_index; |
b49e97c9 TS |
3174 | } |
3175 | ||
5c18022e RS |
3176 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3177 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3178 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3179 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3180 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3181 | |
3182 | static bfd_vma | |
9719ad41 | 3183 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3184 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3185 | { |
91d6fa6a | 3186 | bfd_vma page, got_index; |
b15e6682 | 3187 | struct mips_got_entry *entry; |
b49e97c9 | 3188 | |
0a44bf69 | 3189 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3190 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3191 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3192 | |
b15e6682 AO |
3193 | if (!entry) |
3194 | return MINUS_ONE; | |
143d77c5 | 3195 | |
91d6fa6a | 3196 | got_index = entry->gotidx; |
b49e97c9 TS |
3197 | |
3198 | if (offsetp) | |
f4416af6 | 3199 | *offsetp = value - entry->d.address; |
b49e97c9 | 3200 | |
91d6fa6a | 3201 | return got_index; |
b49e97c9 TS |
3202 | } |
3203 | ||
738e5348 | 3204 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
0a44bf69 RS |
3205 | EXTERNAL is true if the relocation was against a global symbol |
3206 | that has been forced local. */ | |
b49e97c9 TS |
3207 | |
3208 | static bfd_vma | |
9719ad41 | 3209 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3210 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3211 | { |
b15e6682 | 3212 | struct mips_got_entry *entry; |
b49e97c9 | 3213 | |
0a44bf69 RS |
3214 | /* GOT16 relocations against local symbols are followed by a LO16 |
3215 | relocation; those against global symbols are not. Thus if the | |
3216 | symbol was originally local, the GOT16 relocation should load the | |
3217 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3218 | if (! external) |
0a44bf69 | 3219 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3220 | |
738e5348 RS |
3221 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3222 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3223 | same in all cases. */ | |
a8028dd0 RS |
3224 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3225 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3226 | if (entry) |
3227 | return entry->gotidx; | |
3228 | else | |
3229 | return MINUS_ONE; | |
b49e97c9 TS |
3230 | } |
3231 | ||
3232 | /* Returns the offset for the entry at the INDEXth position | |
3233 | in the GOT. */ | |
3234 | ||
3235 | static bfd_vma | |
a8028dd0 | 3236 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3237 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3238 | { |
a8028dd0 | 3239 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3240 | asection *sgot; |
3241 | bfd_vma gp; | |
3242 | ||
a8028dd0 | 3243 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3244 | BFD_ASSERT (htab != NULL); |
3245 | ||
a8028dd0 | 3246 | sgot = htab->sgot; |
f4416af6 | 3247 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3248 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3249 | |
91d6fa6a | 3250 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3251 | } |
3252 | ||
0a44bf69 RS |
3253 | /* Create and return a local GOT entry for VALUE, which was calculated |
3254 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3255 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3256 | instead. */ | |
b49e97c9 | 3257 | |
b15e6682 | 3258 | static struct mips_got_entry * |
0a44bf69 | 3259 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3260 | bfd *ibfd, bfd_vma value, |
5c18022e | 3261 | unsigned long r_symndx, |
0f20cc35 DJ |
3262 | struct mips_elf_link_hash_entry *h, |
3263 | int r_type) | |
b49e97c9 | 3264 | { |
b15e6682 | 3265 | struct mips_got_entry entry, **loc; |
f4416af6 | 3266 | struct mips_got_info *g; |
0a44bf69 RS |
3267 | struct mips_elf_link_hash_table *htab; |
3268 | ||
3269 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3270 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3271 | |
f4416af6 AO |
3272 | entry.abfd = NULL; |
3273 | entry.symndx = -1; | |
3274 | entry.d.address = value; | |
0f20cc35 | 3275 | entry.tls_type = 0; |
f4416af6 | 3276 | |
a8028dd0 | 3277 | g = mips_elf_got_for_ibfd (htab->got_info, ibfd); |
f4416af6 AO |
3278 | if (g == NULL) |
3279 | { | |
a8028dd0 | 3280 | g = mips_elf_got_for_ibfd (htab->got_info, abfd); |
f4416af6 AO |
3281 | BFD_ASSERT (g != NULL); |
3282 | } | |
b15e6682 | 3283 | |
0f20cc35 DJ |
3284 | /* We might have a symbol, H, if it has been forced local. Use the |
3285 | global entry then. It doesn't matter whether an entry is local | |
3286 | or global for TLS, since the dynamic linker does not | |
3287 | automatically relocate TLS GOT entries. */ | |
a008ac03 | 3288 | BFD_ASSERT (h == NULL || h->root.forced_local); |
0f20cc35 DJ |
3289 | if (TLS_RELOC_P (r_type)) |
3290 | { | |
3291 | struct mips_got_entry *p; | |
3292 | ||
3293 | entry.abfd = ibfd; | |
3294 | if (r_type == R_MIPS_TLS_LDM) | |
3295 | { | |
3296 | entry.tls_type = GOT_TLS_LDM; | |
3297 | entry.symndx = 0; | |
3298 | entry.d.addend = 0; | |
3299 | } | |
3300 | else if (h == NULL) | |
3301 | { | |
3302 | entry.symndx = r_symndx; | |
3303 | entry.d.addend = 0; | |
3304 | } | |
3305 | else | |
3306 | entry.d.h = h; | |
3307 | ||
3308 | p = (struct mips_got_entry *) | |
3309 | htab_find (g->got_entries, &entry); | |
3310 | ||
3311 | BFD_ASSERT (p); | |
3312 | return p; | |
3313 | } | |
3314 | ||
b15e6682 AO |
3315 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, |
3316 | INSERT); | |
3317 | if (*loc) | |
3318 | return *loc; | |
143d77c5 | 3319 | |
b15e6682 | 3320 | entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; |
0f20cc35 | 3321 | entry.tls_type = 0; |
b15e6682 AO |
3322 | |
3323 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3324 | ||
3325 | if (! *loc) | |
3326 | return NULL; | |
143d77c5 | 3327 | |
b15e6682 AO |
3328 | memcpy (*loc, &entry, sizeof entry); |
3329 | ||
8275b357 | 3330 | if (g->assigned_gotno > g->local_gotno) |
b49e97c9 | 3331 | { |
f4416af6 | 3332 | (*loc)->gotidx = -1; |
b49e97c9 TS |
3333 | /* We didn't allocate enough space in the GOT. */ |
3334 | (*_bfd_error_handler) | |
3335 | (_("not enough GOT space for local GOT entries")); | |
3336 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3337 | return NULL; |
b49e97c9 TS |
3338 | } |
3339 | ||
3340 | MIPS_ELF_PUT_WORD (abfd, value, | |
a8028dd0 | 3341 | (htab->sgot->contents + entry.gotidx)); |
b15e6682 | 3342 | |
5c18022e | 3343 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3344 | if (htab->is_vxworks) |
3345 | { | |
3346 | Elf_Internal_Rela outrel; | |
5c18022e | 3347 | asection *s; |
91d6fa6a | 3348 | bfd_byte *rloc; |
0a44bf69 | 3349 | bfd_vma got_address; |
0a44bf69 RS |
3350 | |
3351 | s = mips_elf_rel_dyn_section (info, FALSE); | |
a8028dd0 RS |
3352 | got_address = (htab->sgot->output_section->vma |
3353 | + htab->sgot->output_offset | |
0a44bf69 RS |
3354 | + entry.gotidx); |
3355 | ||
91d6fa6a | 3356 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3357 | outrel.r_offset = got_address; |
5c18022e RS |
3358 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3359 | outrel.r_addend = value; | |
91d6fa6a | 3360 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3361 | } |
3362 | ||
b15e6682 | 3363 | return *loc; |
b49e97c9 TS |
3364 | } |
3365 | ||
d4596a51 RS |
3366 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3367 | The number might be exact or a worst-case estimate, depending on how | |
3368 | much information is available to elf_backend_omit_section_dynsym at | |
3369 | the current linking stage. */ | |
3370 | ||
3371 | static bfd_size_type | |
3372 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3373 | { | |
3374 | bfd_size_type count; | |
3375 | ||
3376 | count = 0; | |
3377 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
3378 | { | |
3379 | asection *p; | |
3380 | const struct elf_backend_data *bed; | |
3381 | ||
3382 | bed = get_elf_backend_data (output_bfd); | |
3383 | for (p = output_bfd->sections; p ; p = p->next) | |
3384 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3385 | && (p->flags & SEC_ALLOC) != 0 | |
3386 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
3387 | ++count; | |
3388 | } | |
3389 | return count; | |
3390 | } | |
3391 | ||
b49e97c9 | 3392 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3393 | appear towards the end. */ |
b49e97c9 | 3394 | |
b34976b6 | 3395 | static bfd_boolean |
d4596a51 | 3396 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3397 | { |
a8028dd0 | 3398 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3399 | struct mips_elf_hash_sort_data hsd; |
3400 | struct mips_got_info *g; | |
b49e97c9 | 3401 | |
d4596a51 RS |
3402 | if (elf_hash_table (info)->dynsymcount == 0) |
3403 | return TRUE; | |
3404 | ||
a8028dd0 | 3405 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3406 | BFD_ASSERT (htab != NULL); |
3407 | ||
a8028dd0 | 3408 | g = htab->got_info; |
d4596a51 RS |
3409 | if (g == NULL) |
3410 | return TRUE; | |
f4416af6 | 3411 | |
b49e97c9 | 3412 | hsd.low = NULL; |
23cc69b6 RS |
3413 | hsd.max_unref_got_dynindx |
3414 | = hsd.min_got_dynindx | |
3415 | = (elf_hash_table (info)->dynsymcount - g->reloc_only_gotno); | |
d4596a51 | 3416 | hsd.max_non_got_dynindx = count_section_dynsyms (abfd, info) + 1; |
b49e97c9 TS |
3417 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
3418 | elf_hash_table (info)), | |
3419 | mips_elf_sort_hash_table_f, | |
3420 | &hsd); | |
3421 | ||
3422 | /* There should have been enough room in the symbol table to | |
44c410de | 3423 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 3424 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
d4596a51 RS |
3425 | BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx |
3426 | == elf_hash_table (info)->dynsymcount); | |
3427 | BFD_ASSERT (elf_hash_table (info)->dynsymcount - hsd.min_got_dynindx | |
3428 | == g->global_gotno); | |
b49e97c9 TS |
3429 | |
3430 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3431 | table index in the GOT. */ | |
b49e97c9 TS |
3432 | g->global_gotsym = hsd.low; |
3433 | ||
b34976b6 | 3434 | return TRUE; |
b49e97c9 TS |
3435 | } |
3436 | ||
3437 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3438 | index. Otherwise, assign it the lowest available dynamic | |
3439 | index. */ | |
3440 | ||
b34976b6 | 3441 | static bfd_boolean |
9719ad41 | 3442 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3443 | { |
9719ad41 | 3444 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 TS |
3445 | |
3446 | if (h->root.root.type == bfd_link_hash_warning) | |
3447 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3448 | ||
3449 | /* Symbols without dynamic symbol table entries aren't interesting | |
3450 | at all. */ | |
3451 | if (h->root.dynindx == -1) | |
b34976b6 | 3452 | return TRUE; |
b49e97c9 | 3453 | |
634835ae | 3454 | switch (h->global_got_area) |
f4416af6 | 3455 | { |
634835ae RS |
3456 | case GGA_NONE: |
3457 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
3458 | break; | |
0f20cc35 | 3459 | |
634835ae | 3460 | case GGA_NORMAL: |
0f20cc35 DJ |
3461 | BFD_ASSERT (h->tls_type == GOT_NORMAL); |
3462 | ||
b49e97c9 TS |
3463 | h->root.dynindx = --hsd->min_got_dynindx; |
3464 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3465 | break; |
3466 | ||
3467 | case GGA_RELOC_ONLY: | |
3468 | BFD_ASSERT (h->tls_type == GOT_NORMAL); | |
3469 | ||
3470 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) | |
3471 | hsd->low = (struct elf_link_hash_entry *) h; | |
3472 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3473 | break; | |
b49e97c9 TS |
3474 | } |
3475 | ||
b34976b6 | 3476 | return TRUE; |
b49e97c9 TS |
3477 | } |
3478 | ||
3479 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
3480 | symbol table index lower than any we've seen to date, record it for | |
3481 | posterity. */ | |
3482 | ||
b34976b6 | 3483 | static bfd_boolean |
9719ad41 RS |
3484 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3485 | bfd *abfd, struct bfd_link_info *info, | |
0f20cc35 | 3486 | unsigned char tls_flag) |
b49e97c9 | 3487 | { |
a8028dd0 | 3488 | struct mips_elf_link_hash_table *htab; |
634835ae | 3489 | struct mips_elf_link_hash_entry *hmips; |
f4416af6 | 3490 | struct mips_got_entry entry, **loc; |
a8028dd0 RS |
3491 | struct mips_got_info *g; |
3492 | ||
3493 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3494 | BFD_ASSERT (htab != NULL); |
3495 | ||
634835ae | 3496 | hmips = (struct mips_elf_link_hash_entry *) h; |
f4416af6 | 3497 | |
b49e97c9 TS |
3498 | /* A global symbol in the GOT must also be in the dynamic symbol |
3499 | table. */ | |
7c5fcef7 L |
3500 | if (h->dynindx == -1) |
3501 | { | |
3502 | switch (ELF_ST_VISIBILITY (h->other)) | |
3503 | { | |
3504 | case STV_INTERNAL: | |
3505 | case STV_HIDDEN: | |
33bb52fb | 3506 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3507 | break; |
3508 | } | |
c152c796 | 3509 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3510 | return FALSE; |
7c5fcef7 | 3511 | } |
b49e97c9 | 3512 | |
86324f90 | 3513 | /* Make sure we have a GOT to put this entry into. */ |
a8028dd0 | 3514 | g = htab->got_info; |
86324f90 EC |
3515 | BFD_ASSERT (g != NULL); |
3516 | ||
f4416af6 AO |
3517 | entry.abfd = abfd; |
3518 | entry.symndx = -1; | |
3519 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
0f20cc35 | 3520 | entry.tls_type = 0; |
f4416af6 AO |
3521 | |
3522 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, | |
3523 | INSERT); | |
3524 | ||
b49e97c9 TS |
3525 | /* If we've already marked this entry as needing GOT space, we don't |
3526 | need to do it again. */ | |
f4416af6 | 3527 | if (*loc) |
0f20cc35 DJ |
3528 | { |
3529 | (*loc)->tls_type |= tls_flag; | |
3530 | return TRUE; | |
3531 | } | |
f4416af6 AO |
3532 | |
3533 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3534 | ||
3535 | if (! *loc) | |
3536 | return FALSE; | |
143d77c5 | 3537 | |
f4416af6 | 3538 | entry.gotidx = -1; |
0f20cc35 DJ |
3539 | entry.tls_type = tls_flag; |
3540 | ||
f4416af6 AO |
3541 | memcpy (*loc, &entry, sizeof entry); |
3542 | ||
0f20cc35 | 3543 | if (tls_flag == 0) |
634835ae | 3544 | hmips->global_got_area = GGA_NORMAL; |
b49e97c9 | 3545 | |
b34976b6 | 3546 | return TRUE; |
b49e97c9 | 3547 | } |
f4416af6 AO |
3548 | |
3549 | /* Reserve space in G for a GOT entry containing the value of symbol | |
3550 | SYMNDX in input bfd ABDF, plus ADDEND. */ | |
3551 | ||
3552 | static bfd_boolean | |
9719ad41 | 3553 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
a8028dd0 | 3554 | struct bfd_link_info *info, |
0f20cc35 | 3555 | unsigned char tls_flag) |
f4416af6 | 3556 | { |
a8028dd0 RS |
3557 | struct mips_elf_link_hash_table *htab; |
3558 | struct mips_got_info *g; | |
f4416af6 AO |
3559 | struct mips_got_entry entry, **loc; |
3560 | ||
a8028dd0 | 3561 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3562 | BFD_ASSERT (htab != NULL); |
3563 | ||
a8028dd0 RS |
3564 | g = htab->got_info; |
3565 | BFD_ASSERT (g != NULL); | |
3566 | ||
f4416af6 AO |
3567 | entry.abfd = abfd; |
3568 | entry.symndx = symndx; | |
3569 | entry.d.addend = addend; | |
0f20cc35 | 3570 | entry.tls_type = tls_flag; |
f4416af6 AO |
3571 | loc = (struct mips_got_entry **) |
3572 | htab_find_slot (g->got_entries, &entry, INSERT); | |
3573 | ||
3574 | if (*loc) | |
0f20cc35 DJ |
3575 | { |
3576 | if (tls_flag == GOT_TLS_GD && !((*loc)->tls_type & GOT_TLS_GD)) | |
3577 | { | |
3578 | g->tls_gotno += 2; | |
3579 | (*loc)->tls_type |= tls_flag; | |
3580 | } | |
3581 | else if (tls_flag == GOT_TLS_IE && !((*loc)->tls_type & GOT_TLS_IE)) | |
3582 | { | |
3583 | g->tls_gotno += 1; | |
3584 | (*loc)->tls_type |= tls_flag; | |
3585 | } | |
3586 | return TRUE; | |
3587 | } | |
f4416af6 | 3588 | |
0f20cc35 DJ |
3589 | if (tls_flag != 0) |
3590 | { | |
3591 | entry.gotidx = -1; | |
3592 | entry.tls_type = tls_flag; | |
3593 | if (tls_flag == GOT_TLS_IE) | |
3594 | g->tls_gotno += 1; | |
3595 | else if (tls_flag == GOT_TLS_GD) | |
3596 | g->tls_gotno += 2; | |
3597 | else if (g->tls_ldm_offset == MINUS_ONE) | |
3598 | { | |
3599 | g->tls_ldm_offset = MINUS_TWO; | |
3600 | g->tls_gotno += 2; | |
3601 | } | |
3602 | } | |
3603 | else | |
3604 | { | |
3605 | entry.gotidx = g->local_gotno++; | |
3606 | entry.tls_type = 0; | |
3607 | } | |
f4416af6 AO |
3608 | |
3609 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3610 | ||
3611 | if (! *loc) | |
3612 | return FALSE; | |
143d77c5 | 3613 | |
f4416af6 AO |
3614 | memcpy (*loc, &entry, sizeof entry); |
3615 | ||
3616 | return TRUE; | |
3617 | } | |
c224138d RS |
3618 | |
3619 | /* Return the maximum number of GOT page entries required for RANGE. */ | |
3620 | ||
3621 | static bfd_vma | |
3622 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
3623 | { | |
3624 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
3625 | } | |
3626 | ||
3a3b6725 | 3627 | /* Record that ABFD has a page relocation against symbol SYMNDX and |
a8028dd0 RS |
3628 | that ADDEND is the addend for that relocation. |
3629 | ||
3630 | This function creates an upper bound on the number of GOT slots | |
3631 | required; no attempt is made to combine references to non-overridable | |
3632 | global symbols across multiple input files. */ | |
c224138d RS |
3633 | |
3634 | static bfd_boolean | |
a8028dd0 RS |
3635 | mips_elf_record_got_page_entry (struct bfd_link_info *info, bfd *abfd, |
3636 | long symndx, bfd_signed_vma addend) | |
c224138d | 3637 | { |
a8028dd0 RS |
3638 | struct mips_elf_link_hash_table *htab; |
3639 | struct mips_got_info *g; | |
c224138d RS |
3640 | struct mips_got_page_entry lookup, *entry; |
3641 | struct mips_got_page_range **range_ptr, *range; | |
3642 | bfd_vma old_pages, new_pages; | |
3643 | void **loc; | |
3644 | ||
a8028dd0 | 3645 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3646 | BFD_ASSERT (htab != NULL); |
3647 | ||
a8028dd0 RS |
3648 | g = htab->got_info; |
3649 | BFD_ASSERT (g != NULL); | |
3650 | ||
c224138d RS |
3651 | /* Find the mips_got_page_entry hash table entry for this symbol. */ |
3652 | lookup.abfd = abfd; | |
3653 | lookup.symndx = symndx; | |
3654 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
3655 | if (loc == NULL) | |
3656 | return FALSE; | |
3657 | ||
3658 | /* Create a mips_got_page_entry if this is the first time we've | |
3659 | seen the symbol. */ | |
3660 | entry = (struct mips_got_page_entry *) *loc; | |
3661 | if (!entry) | |
3662 | { | |
3663 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
3664 | if (!entry) | |
3665 | return FALSE; | |
3666 | ||
3667 | entry->abfd = abfd; | |
3668 | entry->symndx = symndx; | |
3669 | entry->ranges = NULL; | |
3670 | entry->num_pages = 0; | |
3671 | *loc = entry; | |
3672 | } | |
3673 | ||
3674 | /* Skip over ranges whose maximum extent cannot share a page entry | |
3675 | with ADDEND. */ | |
3676 | range_ptr = &entry->ranges; | |
3677 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
3678 | range_ptr = &(*range_ptr)->next; | |
3679 | ||
3680 | /* If we scanned to the end of the list, or found a range whose | |
3681 | minimum extent cannot share a page entry with ADDEND, create | |
3682 | a new singleton range. */ | |
3683 | range = *range_ptr; | |
3684 | if (!range || addend < range->min_addend - 0xffff) | |
3685 | { | |
3686 | range = bfd_alloc (abfd, sizeof (*range)); | |
3687 | if (!range) | |
3688 | return FALSE; | |
3689 | ||
3690 | range->next = *range_ptr; | |
3691 | range->min_addend = addend; | |
3692 | range->max_addend = addend; | |
3693 | ||
3694 | *range_ptr = range; | |
3695 | entry->num_pages++; | |
3696 | g->page_gotno++; | |
3697 | return TRUE; | |
3698 | } | |
3699 | ||
3700 | /* Remember how many pages the old range contributed. */ | |
3701 | old_pages = mips_elf_pages_for_range (range); | |
3702 | ||
3703 | /* Update the ranges. */ | |
3704 | if (addend < range->min_addend) | |
3705 | range->min_addend = addend; | |
3706 | else if (addend > range->max_addend) | |
3707 | { | |
3708 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
3709 | { | |
3710 | old_pages += mips_elf_pages_for_range (range->next); | |
3711 | range->max_addend = range->next->max_addend; | |
3712 | range->next = range->next->next; | |
3713 | } | |
3714 | else | |
3715 | range->max_addend = addend; | |
3716 | } | |
3717 | ||
3718 | /* Record any change in the total estimate. */ | |
3719 | new_pages = mips_elf_pages_for_range (range); | |
3720 | if (old_pages != new_pages) | |
3721 | { | |
3722 | entry->num_pages += new_pages - old_pages; | |
3723 | g->page_gotno += new_pages - old_pages; | |
3724 | } | |
3725 | ||
3726 | return TRUE; | |
3727 | } | |
33bb52fb RS |
3728 | |
3729 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
3730 | ||
3731 | static void | |
3732 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
3733 | unsigned int n) | |
3734 | { | |
3735 | asection *s; | |
3736 | struct mips_elf_link_hash_table *htab; | |
3737 | ||
3738 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3739 | BFD_ASSERT (htab != NULL); |
3740 | ||
33bb52fb RS |
3741 | s = mips_elf_rel_dyn_section (info, FALSE); |
3742 | BFD_ASSERT (s != NULL); | |
3743 | ||
3744 | if (htab->is_vxworks) | |
3745 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
3746 | else | |
3747 | { | |
3748 | if (s->size == 0) | |
3749 | { | |
3750 | /* Make room for a null element. */ | |
3751 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
3752 | ++s->reloc_count; | |
3753 | } | |
3754 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
3755 | } | |
3756 | } | |
3757 | \f | |
3758 | /* A htab_traverse callback for GOT entries. Set boolean *DATA to true | |
3759 | if the GOT entry is for an indirect or warning symbol. */ | |
3760 | ||
3761 | static int | |
3762 | mips_elf_check_recreate_got (void **entryp, void *data) | |
3763 | { | |
3764 | struct mips_got_entry *entry; | |
3765 | bfd_boolean *must_recreate; | |
3766 | ||
3767 | entry = (struct mips_got_entry *) *entryp; | |
3768 | must_recreate = (bfd_boolean *) data; | |
3769 | if (entry->abfd != NULL && entry->symndx == -1) | |
3770 | { | |
3771 | struct mips_elf_link_hash_entry *h; | |
3772 | ||
3773 | h = entry->d.h; | |
3774 | if (h->root.root.type == bfd_link_hash_indirect | |
3775 | || h->root.root.type == bfd_link_hash_warning) | |
3776 | { | |
3777 | *must_recreate = TRUE; | |
3778 | return 0; | |
3779 | } | |
3780 | } | |
3781 | return 1; | |
3782 | } | |
3783 | ||
3784 | /* A htab_traverse callback for GOT entries. Add all entries to | |
3785 | hash table *DATA, converting entries for indirect and warning | |
3786 | symbols into entries for the target symbol. Set *DATA to null | |
3787 | on error. */ | |
3788 | ||
3789 | static int | |
3790 | mips_elf_recreate_got (void **entryp, void *data) | |
3791 | { | |
3792 | htab_t *new_got; | |
3793 | struct mips_got_entry *entry; | |
3794 | void **slot; | |
3795 | ||
3796 | new_got = (htab_t *) data; | |
3797 | entry = (struct mips_got_entry *) *entryp; | |
3798 | if (entry->abfd != NULL && entry->symndx == -1) | |
3799 | { | |
3800 | struct mips_elf_link_hash_entry *h; | |
3801 | ||
3802 | h = entry->d.h; | |
3803 | while (h->root.root.type == bfd_link_hash_indirect | |
3804 | || h->root.root.type == bfd_link_hash_warning) | |
634835ae RS |
3805 | { |
3806 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
3807 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3808 | } | |
33bb52fb RS |
3809 | entry->d.h = h; |
3810 | } | |
3811 | slot = htab_find_slot (*new_got, entry, INSERT); | |
3812 | if (slot == NULL) | |
3813 | { | |
3814 | *new_got = NULL; | |
3815 | return 0; | |
3816 | } | |
3817 | if (*slot == NULL) | |
3818 | *slot = entry; | |
3819 | else | |
3820 | free (entry); | |
3821 | return 1; | |
3822 | } | |
3823 | ||
3824 | /* If any entries in G->got_entries are for indirect or warning symbols, | |
3825 | replace them with entries for the target symbol. */ | |
3826 | ||
3827 | static bfd_boolean | |
3828 | mips_elf_resolve_final_got_entries (struct mips_got_info *g) | |
3829 | { | |
3830 | bfd_boolean must_recreate; | |
3831 | htab_t new_got; | |
3832 | ||
3833 | must_recreate = FALSE; | |
3834 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &must_recreate); | |
3835 | if (must_recreate) | |
3836 | { | |
3837 | new_got = htab_create (htab_size (g->got_entries), | |
3838 | mips_elf_got_entry_hash, | |
3839 | mips_elf_got_entry_eq, NULL); | |
3840 | htab_traverse (g->got_entries, mips_elf_recreate_got, &new_got); | |
3841 | if (new_got == NULL) | |
3842 | return FALSE; | |
3843 | ||
3844 | /* Each entry in g->got_entries has either been copied to new_got | |
3845 | or freed. Now delete the hash table itself. */ | |
3846 | htab_delete (g->got_entries); | |
3847 | g->got_entries = new_got; | |
3848 | } | |
3849 | return TRUE; | |
3850 | } | |
3851 | ||
634835ae | 3852 | /* A mips_elf_link_hash_traverse callback for which DATA points |
d4596a51 | 3853 | to a mips_got_info. Count the number of type (3) entries. */ |
33bb52fb RS |
3854 | |
3855 | static int | |
d4596a51 | 3856 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb RS |
3857 | { |
3858 | struct mips_got_info *g; | |
3859 | ||
3860 | g = (struct mips_got_info *) data; | |
d4596a51 | 3861 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 3862 | { |
d4596a51 RS |
3863 | if (h->root.forced_local || h->root.dynindx == -1) |
3864 | { | |
3865 | /* We no longer need this entry if it was only used for | |
3866 | relocations; those relocations will be against the | |
3867 | null or section symbol instead of H. */ | |
3868 | if (h->global_got_area != GGA_RELOC_ONLY) | |
3869 | g->local_gotno++; | |
3870 | h->global_got_area = GGA_NONE; | |
3871 | } | |
3872 | else | |
23cc69b6 RS |
3873 | { |
3874 | g->global_gotno++; | |
3875 | if (h->global_got_area == GGA_RELOC_ONLY) | |
3876 | g->reloc_only_gotno++; | |
3877 | } | |
33bb52fb RS |
3878 | } |
3879 | return 1; | |
3880 | } | |
f4416af6 AO |
3881 | \f |
3882 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
3883 | ||
3884 | static hashval_t | |
9719ad41 | 3885 | mips_elf_bfd2got_entry_hash (const void *entry_) |
f4416af6 AO |
3886 | { |
3887 | const struct mips_elf_bfd2got_hash *entry | |
3888 | = (struct mips_elf_bfd2got_hash *)entry_; | |
3889 | ||
3890 | return entry->bfd->id; | |
3891 | } | |
3892 | ||
3893 | /* Check whether two hash entries have the same bfd. */ | |
3894 | ||
3895 | static int | |
9719ad41 | 3896 | mips_elf_bfd2got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3897 | { |
3898 | const struct mips_elf_bfd2got_hash *e1 | |
3899 | = (const struct mips_elf_bfd2got_hash *)entry1; | |
3900 | const struct mips_elf_bfd2got_hash *e2 | |
3901 | = (const struct mips_elf_bfd2got_hash *)entry2; | |
3902 | ||
3903 | return e1->bfd == e2->bfd; | |
3904 | } | |
3905 | ||
bad36eac | 3906 | /* In a multi-got link, determine the GOT to be used for IBFD. G must |
f4416af6 AO |
3907 | be the master GOT data. */ |
3908 | ||
3909 | static struct mips_got_info * | |
9719ad41 | 3910 | mips_elf_got_for_ibfd (struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
3911 | { |
3912 | struct mips_elf_bfd2got_hash e, *p; | |
3913 | ||
3914 | if (! g->bfd2got) | |
3915 | return g; | |
3916 | ||
3917 | e.bfd = ibfd; | |
9719ad41 | 3918 | p = htab_find (g->bfd2got, &e); |
f4416af6 AO |
3919 | return p ? p->g : NULL; |
3920 | } | |
3921 | ||
c224138d RS |
3922 | /* Use BFD2GOT to find ABFD's got entry, creating one if none exists. |
3923 | Return NULL if an error occured. */ | |
f4416af6 | 3924 | |
c224138d RS |
3925 | static struct mips_got_info * |
3926 | mips_elf_get_got_for_bfd (struct htab *bfd2got, bfd *output_bfd, | |
3927 | bfd *input_bfd) | |
f4416af6 | 3928 | { |
f4416af6 | 3929 | struct mips_elf_bfd2got_hash bfdgot_entry, *bfdgot; |
c224138d | 3930 | struct mips_got_info *g; |
f4416af6 | 3931 | void **bfdgotp; |
143d77c5 | 3932 | |
c224138d | 3933 | bfdgot_entry.bfd = input_bfd; |
f4416af6 | 3934 | bfdgotp = htab_find_slot (bfd2got, &bfdgot_entry, INSERT); |
c224138d | 3935 | bfdgot = (struct mips_elf_bfd2got_hash *) *bfdgotp; |
f4416af6 | 3936 | |
c224138d | 3937 | if (bfdgot == NULL) |
f4416af6 | 3938 | { |
c224138d RS |
3939 | bfdgot = ((struct mips_elf_bfd2got_hash *) |
3940 | bfd_alloc (output_bfd, sizeof (struct mips_elf_bfd2got_hash))); | |
f4416af6 | 3941 | if (bfdgot == NULL) |
c224138d | 3942 | return NULL; |
f4416af6 AO |
3943 | |
3944 | *bfdgotp = bfdgot; | |
3945 | ||
c224138d RS |
3946 | g = ((struct mips_got_info *) |
3947 | bfd_alloc (output_bfd, sizeof (struct mips_got_info))); | |
f4416af6 | 3948 | if (g == NULL) |
c224138d RS |
3949 | return NULL; |
3950 | ||
3951 | bfdgot->bfd = input_bfd; | |
3952 | bfdgot->g = g; | |
f4416af6 AO |
3953 | |
3954 | g->global_gotsym = NULL; | |
3955 | g->global_gotno = 0; | |
23cc69b6 | 3956 | g->reloc_only_gotno = 0; |
f4416af6 | 3957 | g->local_gotno = 0; |
c224138d | 3958 | g->page_gotno = 0; |
f4416af6 | 3959 | g->assigned_gotno = -1; |
0f20cc35 DJ |
3960 | g->tls_gotno = 0; |
3961 | g->tls_assigned_gotno = 0; | |
3962 | g->tls_ldm_offset = MINUS_ONE; | |
f4416af6 | 3963 | g->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
9719ad41 | 3964 | mips_elf_multi_got_entry_eq, NULL); |
f4416af6 | 3965 | if (g->got_entries == NULL) |
c224138d RS |
3966 | return NULL; |
3967 | ||
3968 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
3969 | mips_got_page_entry_eq, NULL); | |
3970 | if (g->got_page_entries == NULL) | |
3971 | return NULL; | |
f4416af6 AO |
3972 | |
3973 | g->bfd2got = NULL; | |
3974 | g->next = NULL; | |
3975 | } | |
3976 | ||
c224138d RS |
3977 | return bfdgot->g; |
3978 | } | |
3979 | ||
3980 | /* A htab_traverse callback for the entries in the master got. | |
3981 | Create one separate got for each bfd that has entries in the global | |
3982 | got, such that we can tell how many local and global entries each | |
3983 | bfd requires. */ | |
3984 | ||
3985 | static int | |
3986 | mips_elf_make_got_per_bfd (void **entryp, void *p) | |
3987 | { | |
3988 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3989 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
3990 | struct mips_got_info *g; | |
3991 | ||
3992 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
3993 | if (g == NULL) | |
3994 | { | |
3995 | arg->obfd = NULL; | |
3996 | return 0; | |
3997 | } | |
3998 | ||
f4416af6 AO |
3999 | /* Insert the GOT entry in the bfd's got entry hash table. */ |
4000 | entryp = htab_find_slot (g->got_entries, entry, INSERT); | |
4001 | if (*entryp != NULL) | |
4002 | return 1; | |
143d77c5 | 4003 | |
f4416af6 AO |
4004 | *entryp = entry; |
4005 | ||
0f20cc35 DJ |
4006 | if (entry->tls_type) |
4007 | { | |
4008 | if (entry->tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) | |
4009 | g->tls_gotno += 2; | |
4010 | if (entry->tls_type & GOT_TLS_IE) | |
4011 | g->tls_gotno += 1; | |
4012 | } | |
33bb52fb | 4013 | else if (entry->symndx >= 0 || entry->d.h->root.forced_local) |
f4416af6 AO |
4014 | ++g->local_gotno; |
4015 | else | |
4016 | ++g->global_gotno; | |
4017 | ||
4018 | return 1; | |
4019 | } | |
4020 | ||
c224138d RS |
4021 | /* A htab_traverse callback for the page entries in the master got. |
4022 | Associate each page entry with the bfd's got. */ | |
4023 | ||
4024 | static int | |
4025 | mips_elf_make_got_pages_per_bfd (void **entryp, void *p) | |
4026 | { | |
4027 | struct mips_got_page_entry *entry = (struct mips_got_page_entry *) *entryp; | |
4028 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *) p; | |
4029 | struct mips_got_info *g; | |
4030 | ||
4031 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
4032 | if (g == NULL) | |
4033 | { | |
4034 | arg->obfd = NULL; | |
4035 | return 0; | |
4036 | } | |
4037 | ||
4038 | /* Insert the GOT entry in the bfd's got entry hash table. */ | |
4039 | entryp = htab_find_slot (g->got_page_entries, entry, INSERT); | |
4040 | if (*entryp != NULL) | |
4041 | return 1; | |
4042 | ||
4043 | *entryp = entry; | |
4044 | g->page_gotno += entry->num_pages; | |
4045 | return 1; | |
4046 | } | |
4047 | ||
4048 | /* Consider merging the got described by BFD2GOT with TO, using the | |
4049 | information given by ARG. Return -1 if this would lead to overflow, | |
4050 | 1 if they were merged successfully, and 0 if a merge failed due to | |
4051 | lack of memory. (These values are chosen so that nonnegative return | |
4052 | values can be returned by a htab_traverse callback.) */ | |
4053 | ||
4054 | static int | |
4055 | mips_elf_merge_got_with (struct mips_elf_bfd2got_hash *bfd2got, | |
4056 | struct mips_got_info *to, | |
4057 | struct mips_elf_got_per_bfd_arg *arg) | |
4058 | { | |
4059 | struct mips_got_info *from = bfd2got->g; | |
4060 | unsigned int estimate; | |
4061 | ||
4062 | /* Work out how many page entries we would need for the combined GOT. */ | |
4063 | estimate = arg->max_pages; | |
4064 | if (estimate >= from->page_gotno + to->page_gotno) | |
4065 | estimate = from->page_gotno + to->page_gotno; | |
4066 | ||
4067 | /* And conservatively estimate how many local, global and TLS entries | |
4068 | would be needed. */ | |
4069 | estimate += (from->local_gotno | |
4070 | + from->global_gotno | |
4071 | + from->tls_gotno | |
4072 | + to->local_gotno | |
4073 | + to->global_gotno | |
4074 | + to->tls_gotno); | |
4075 | ||
4076 | /* Bail out if the combined GOT might be too big. */ | |
4077 | if (estimate > arg->max_count) | |
4078 | return -1; | |
4079 | ||
4080 | /* Commit to the merge. Record that TO is now the bfd for this got. */ | |
4081 | bfd2got->g = to; | |
4082 | ||
4083 | /* Transfer the bfd's got information from FROM to TO. */ | |
4084 | htab_traverse (from->got_entries, mips_elf_make_got_per_bfd, arg); | |
4085 | if (arg->obfd == NULL) | |
4086 | return 0; | |
4087 | ||
4088 | htab_traverse (from->got_page_entries, mips_elf_make_got_pages_per_bfd, arg); | |
4089 | if (arg->obfd == NULL) | |
4090 | return 0; | |
4091 | ||
4092 | /* We don't have to worry about releasing memory of the actual | |
4093 | got entries, since they're all in the master got_entries hash | |
4094 | table anyway. */ | |
4095 | htab_delete (from->got_entries); | |
4096 | htab_delete (from->got_page_entries); | |
4097 | return 1; | |
4098 | } | |
4099 | ||
f4416af6 AO |
4100 | /* Attempt to merge gots of different input bfds. Try to use as much |
4101 | as possible of the primary got, since it doesn't require explicit | |
4102 | dynamic relocations, but don't use bfds that would reference global | |
4103 | symbols out of the addressable range. Failing the primary got, | |
4104 | attempt to merge with the current got, or finish the current got | |
4105 | and then make make the new got current. */ | |
4106 | ||
4107 | static int | |
9719ad41 | 4108 | mips_elf_merge_gots (void **bfd2got_, void *p) |
f4416af6 AO |
4109 | { |
4110 | struct mips_elf_bfd2got_hash *bfd2got | |
4111 | = (struct mips_elf_bfd2got_hash *)*bfd2got_; | |
4112 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
c224138d RS |
4113 | struct mips_got_info *g; |
4114 | unsigned int estimate; | |
4115 | int result; | |
4116 | ||
4117 | g = bfd2got->g; | |
4118 | ||
4119 | /* Work out the number of page, local and TLS entries. */ | |
4120 | estimate = arg->max_pages; | |
4121 | if (estimate > g->page_gotno) | |
4122 | estimate = g->page_gotno; | |
4123 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4124 | |
4125 | /* We place TLS GOT entries after both locals and globals. The globals | |
4126 | for the primary GOT may overflow the normal GOT size limit, so be | |
4127 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4128 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4129 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4130 | |
c224138d | 4131 | if (estimate <= arg->max_count) |
f4416af6 | 4132 | { |
c224138d RS |
4133 | /* If we don't have a primary GOT, use it as |
4134 | a starting point for the primary GOT. */ | |
4135 | if (!arg->primary) | |
4136 | { | |
4137 | arg->primary = bfd2got->g; | |
4138 | return 1; | |
4139 | } | |
f4416af6 | 4140 | |
c224138d RS |
4141 | /* Try merging with the primary GOT. */ |
4142 | result = mips_elf_merge_got_with (bfd2got, arg->primary, arg); | |
4143 | if (result >= 0) | |
4144 | return result; | |
f4416af6 | 4145 | } |
c224138d | 4146 | |
f4416af6 | 4147 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4148 | if (arg->current) |
f4416af6 | 4149 | { |
c224138d RS |
4150 | result = mips_elf_merge_got_with (bfd2got, arg->current, arg); |
4151 | if (result >= 0) | |
4152 | return result; | |
f4416af6 | 4153 | } |
c224138d | 4154 | |
f4416af6 AO |
4155 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4156 | fits; if it turns out that it doesn't, we'll get relocation | |
4157 | overflows anyway. */ | |
c224138d RS |
4158 | g->next = arg->current; |
4159 | arg->current = g; | |
0f20cc35 DJ |
4160 | |
4161 | return 1; | |
4162 | } | |
4163 | ||
ead49a57 RS |
4164 | /* Set the TLS GOT index for the GOT entry in ENTRYP. ENTRYP's NEXT field |
4165 | is null iff there is just a single GOT. */ | |
0f20cc35 DJ |
4166 | |
4167 | static int | |
4168 | mips_elf_initialize_tls_index (void **entryp, void *p) | |
4169 | { | |
4170 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4171 | struct mips_got_info *g = p; | |
ead49a57 | 4172 | bfd_vma next_index; |
cbf2cba4 | 4173 | unsigned char tls_type; |
0f20cc35 DJ |
4174 | |
4175 | /* We're only interested in TLS symbols. */ | |
4176 | if (entry->tls_type == 0) | |
4177 | return 1; | |
4178 | ||
ead49a57 RS |
4179 | next_index = MIPS_ELF_GOT_SIZE (entry->abfd) * (long) g->tls_assigned_gotno; |
4180 | ||
4181 | if (entry->symndx == -1 && g->next == NULL) | |
0f20cc35 | 4182 | { |
ead49a57 RS |
4183 | /* A type (3) got entry in the single-GOT case. We use the symbol's |
4184 | hash table entry to track its index. */ | |
4185 | if (entry->d.h->tls_type & GOT_TLS_OFFSET_DONE) | |
4186 | return 1; | |
4187 | entry->d.h->tls_type |= GOT_TLS_OFFSET_DONE; | |
4188 | entry->d.h->tls_got_offset = next_index; | |
cbf2cba4 | 4189 | tls_type = entry->d.h->tls_type; |
ead49a57 RS |
4190 | } |
4191 | else | |
4192 | { | |
4193 | if (entry->tls_type & GOT_TLS_LDM) | |
0f20cc35 | 4194 | { |
ead49a57 RS |
4195 | /* There are separate mips_got_entry objects for each input bfd |
4196 | that requires an LDM entry. Make sure that all LDM entries in | |
4197 | a GOT resolve to the same index. */ | |
4198 | if (g->tls_ldm_offset != MINUS_TWO && g->tls_ldm_offset != MINUS_ONE) | |
4005427f | 4199 | { |
ead49a57 | 4200 | entry->gotidx = g->tls_ldm_offset; |
4005427f RS |
4201 | return 1; |
4202 | } | |
ead49a57 | 4203 | g->tls_ldm_offset = next_index; |
0f20cc35 | 4204 | } |
ead49a57 | 4205 | entry->gotidx = next_index; |
cbf2cba4 | 4206 | tls_type = entry->tls_type; |
f4416af6 AO |
4207 | } |
4208 | ||
ead49a57 | 4209 | /* Account for the entries we've just allocated. */ |
cbf2cba4 | 4210 | if (tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) |
0f20cc35 | 4211 | g->tls_assigned_gotno += 2; |
cbf2cba4 | 4212 | if (tls_type & GOT_TLS_IE) |
0f20cc35 DJ |
4213 | g->tls_assigned_gotno += 1; |
4214 | ||
f4416af6 AO |
4215 | return 1; |
4216 | } | |
4217 | ||
4218 | /* If passed a NULL mips_got_info in the argument, set the marker used | |
4219 | to tell whether a global symbol needs a got entry (in the primary | |
4220 | got) to the given VALUE. | |
4221 | ||
4222 | If passed a pointer G to a mips_got_info in the argument (it must | |
4223 | not be the primary GOT), compute the offset from the beginning of | |
4224 | the (primary) GOT section to the entry in G corresponding to the | |
4225 | global symbol. G's assigned_gotno must contain the index of the | |
4226 | first available global GOT entry in G. VALUE must contain the size | |
4227 | of a GOT entry in bytes. For each global GOT entry that requires a | |
4228 | dynamic relocation, NEEDED_RELOCS is incremented, and the symbol is | |
4cc11e76 | 4229 | marked as not eligible for lazy resolution through a function |
f4416af6 AO |
4230 | stub. */ |
4231 | static int | |
9719ad41 | 4232 | mips_elf_set_global_got_offset (void **entryp, void *p) |
f4416af6 AO |
4233 | { |
4234 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4235 | struct mips_elf_set_global_got_offset_arg *arg | |
4236 | = (struct mips_elf_set_global_got_offset_arg *)p; | |
4237 | struct mips_got_info *g = arg->g; | |
4238 | ||
0f20cc35 DJ |
4239 | if (g && entry->tls_type != GOT_NORMAL) |
4240 | arg->needed_relocs += | |
4241 | mips_tls_got_relocs (arg->info, entry->tls_type, | |
4242 | entry->symndx == -1 ? &entry->d.h->root : NULL); | |
4243 | ||
634835ae RS |
4244 | if (entry->abfd != NULL |
4245 | && entry->symndx == -1 | |
4246 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 AO |
4247 | { |
4248 | if (g) | |
4249 | { | |
4250 | BFD_ASSERT (g->global_gotsym == NULL); | |
4251 | ||
4252 | entry->gotidx = arg->value * (long) g->assigned_gotno++; | |
f4416af6 AO |
4253 | if (arg->info->shared |
4254 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
f5385ebf AM |
4255 | && entry->d.h->root.def_dynamic |
4256 | && !entry->d.h->root.def_regular)) | |
f4416af6 AO |
4257 | ++arg->needed_relocs; |
4258 | } | |
4259 | else | |
634835ae | 4260 | entry->d.h->global_got_area = arg->value; |
f4416af6 AO |
4261 | } |
4262 | ||
4263 | return 1; | |
4264 | } | |
4265 | ||
33bb52fb RS |
4266 | /* A htab_traverse callback for GOT entries for which DATA is the |
4267 | bfd_link_info. Forbid any global symbols from having traditional | |
4268 | lazy-binding stubs. */ | |
4269 | ||
0626d451 | 4270 | static int |
33bb52fb | 4271 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4272 | { |
33bb52fb RS |
4273 | struct bfd_link_info *info; |
4274 | struct mips_elf_link_hash_table *htab; | |
4275 | struct mips_got_entry *entry; | |
0626d451 | 4276 | |
33bb52fb RS |
4277 | entry = (struct mips_got_entry *) *entryp; |
4278 | info = (struct bfd_link_info *) data; | |
4279 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4280 | BFD_ASSERT (htab != NULL); |
4281 | ||
0626d451 RS |
4282 | if (entry->abfd != NULL |
4283 | && entry->symndx == -1 | |
33bb52fb | 4284 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4285 | { |
33bb52fb RS |
4286 | entry->d.h->needs_lazy_stub = FALSE; |
4287 | htab->lazy_stub_count--; | |
f4416af6 | 4288 | } |
143d77c5 | 4289 | |
f4416af6 AO |
4290 | return 1; |
4291 | } | |
4292 | ||
f4416af6 AO |
4293 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4294 | the primary GOT. */ | |
4295 | static bfd_vma | |
9719ad41 | 4296 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4297 | { |
4298 | if (g->bfd2got == NULL) | |
4299 | return 0; | |
4300 | ||
4301 | g = mips_elf_got_for_ibfd (g, ibfd); | |
4302 | if (! g) | |
4303 | return 0; | |
4304 | ||
4305 | BFD_ASSERT (g->next); | |
4306 | ||
4307 | g = g->next; | |
143d77c5 | 4308 | |
0f20cc35 DJ |
4309 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4310 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4311 | } |
4312 | ||
4313 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4314 | a sequence of GOTs, each one 16-bit addressable. */ | |
4315 | ||
4316 | static bfd_boolean | |
9719ad41 | 4317 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4318 | asection *got, bfd_size_type pages) |
f4416af6 | 4319 | { |
a8028dd0 | 4320 | struct mips_elf_link_hash_table *htab; |
f4416af6 AO |
4321 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
4322 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
a8028dd0 | 4323 | struct mips_got_info *g, *gg; |
33bb52fb RS |
4324 | unsigned int assign, needed_relocs; |
4325 | bfd *dynobj; | |
f4416af6 | 4326 | |
33bb52fb | 4327 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4328 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4329 | BFD_ASSERT (htab != NULL); |
4330 | ||
a8028dd0 | 4331 | g = htab->got_info; |
f4416af6 | 4332 | g->bfd2got = htab_try_create (1, mips_elf_bfd2got_entry_hash, |
9719ad41 | 4333 | mips_elf_bfd2got_entry_eq, NULL); |
f4416af6 AO |
4334 | if (g->bfd2got == NULL) |
4335 | return FALSE; | |
4336 | ||
4337 | got_per_bfd_arg.bfd2got = g->bfd2got; | |
4338 | got_per_bfd_arg.obfd = abfd; | |
4339 | got_per_bfd_arg.info = info; | |
4340 | ||
4341 | /* Count how many GOT entries each input bfd requires, creating a | |
4342 | map from bfd to got info while at that. */ | |
f4416af6 AO |
4343 | htab_traverse (g->got_entries, mips_elf_make_got_per_bfd, &got_per_bfd_arg); |
4344 | if (got_per_bfd_arg.obfd == NULL) | |
4345 | return FALSE; | |
4346 | ||
c224138d RS |
4347 | /* Also count how many page entries each input bfd requires. */ |
4348 | htab_traverse (g->got_page_entries, mips_elf_make_got_pages_per_bfd, | |
4349 | &got_per_bfd_arg); | |
4350 | if (got_per_bfd_arg.obfd == NULL) | |
4351 | return FALSE; | |
4352 | ||
f4416af6 AO |
4353 | got_per_bfd_arg.current = NULL; |
4354 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4355 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4356 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4357 | - htab->reserved_gotno); |
c224138d | 4358 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 DJ |
4359 | /* The number of globals that will be included in the primary GOT. |
4360 | See the calls to mips_elf_set_global_got_offset below for more | |
4361 | information. */ | |
4362 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4363 | |
4364 | /* Try to merge the GOTs of input bfds together, as long as they | |
4365 | don't seem to exceed the maximum GOT size, choosing one of them | |
4366 | to be the primary GOT. */ | |
4367 | htab_traverse (g->bfd2got, mips_elf_merge_gots, &got_per_bfd_arg); | |
4368 | if (got_per_bfd_arg.obfd == NULL) | |
4369 | return FALSE; | |
4370 | ||
0f20cc35 | 4371 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 AO |
4372 | if (got_per_bfd_arg.primary == NULL) |
4373 | { | |
4374 | g->next = (struct mips_got_info *) | |
4375 | bfd_alloc (abfd, sizeof (struct mips_got_info)); | |
4376 | if (g->next == NULL) | |
4377 | return FALSE; | |
4378 | ||
4379 | g->next->global_gotsym = NULL; | |
4380 | g->next->global_gotno = 0; | |
23cc69b6 | 4381 | g->next->reloc_only_gotno = 0; |
f4416af6 | 4382 | g->next->local_gotno = 0; |
c224138d | 4383 | g->next->page_gotno = 0; |
0f20cc35 | 4384 | g->next->tls_gotno = 0; |
f4416af6 | 4385 | g->next->assigned_gotno = 0; |
0f20cc35 DJ |
4386 | g->next->tls_assigned_gotno = 0; |
4387 | g->next->tls_ldm_offset = MINUS_ONE; | |
f4416af6 AO |
4388 | g->next->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
4389 | mips_elf_multi_got_entry_eq, | |
9719ad41 | 4390 | NULL); |
f4416af6 AO |
4391 | if (g->next->got_entries == NULL) |
4392 | return FALSE; | |
c224138d RS |
4393 | g->next->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4394 | mips_got_page_entry_eq, | |
4395 | NULL); | |
4396 | if (g->next->got_page_entries == NULL) | |
4397 | return FALSE; | |
f4416af6 AO |
4398 | g->next->bfd2got = NULL; |
4399 | } | |
4400 | else | |
4401 | g->next = got_per_bfd_arg.primary; | |
4402 | g->next->next = got_per_bfd_arg.current; | |
4403 | ||
4404 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4405 | gg = g; | |
4406 | g = g->next; | |
4407 | ||
4408 | /* Map the output bfd to the primary got. That's what we're going | |
4409 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4410 | didn't mark in check_relocs, and we want a quick way to find it. | |
4411 | We can't just use gg->next because we're going to reverse the | |
4412 | list. */ | |
4413 | { | |
4414 | struct mips_elf_bfd2got_hash *bfdgot; | |
4415 | void **bfdgotp; | |
143d77c5 | 4416 | |
f4416af6 AO |
4417 | bfdgot = (struct mips_elf_bfd2got_hash *)bfd_alloc |
4418 | (abfd, sizeof (struct mips_elf_bfd2got_hash)); | |
4419 | ||
4420 | if (bfdgot == NULL) | |
4421 | return FALSE; | |
4422 | ||
4423 | bfdgot->bfd = abfd; | |
4424 | bfdgot->g = g; | |
4425 | bfdgotp = htab_find_slot (gg->bfd2got, bfdgot, INSERT); | |
4426 | ||
4427 | BFD_ASSERT (*bfdgotp == NULL); | |
4428 | *bfdgotp = bfdgot; | |
4429 | } | |
4430 | ||
634835ae RS |
4431 | /* Every symbol that is referenced in a dynamic relocation must be |
4432 | present in the primary GOT, so arrange for them to appear after | |
4433 | those that are actually referenced. */ | |
23cc69b6 | 4434 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4435 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4436 | |
f4416af6 | 4437 | set_got_offset_arg.g = NULL; |
634835ae | 4438 | set_got_offset_arg.value = GGA_RELOC_ONLY; |
f4416af6 AO |
4439 | htab_traverse (gg->got_entries, mips_elf_set_global_got_offset, |
4440 | &set_got_offset_arg); | |
634835ae | 4441 | set_got_offset_arg.value = GGA_NORMAL; |
f4416af6 AO |
4442 | htab_traverse (g->got_entries, mips_elf_set_global_got_offset, |
4443 | &set_got_offset_arg); | |
f4416af6 AO |
4444 | |
4445 | /* Now go through the GOTs assigning them offset ranges. | |
4446 | [assigned_gotno, local_gotno[ will be set to the range of local | |
4447 | entries in each GOT. We can then compute the end of a GOT by | |
4448 | adding local_gotno to global_gotno. We reverse the list and make | |
4449 | it circular since then we'll be able to quickly compute the | |
4450 | beginning of a GOT, by computing the end of its predecessor. To | |
4451 | avoid special cases for the primary GOT, while still preserving | |
4452 | assertions that are valid for both single- and multi-got links, | |
4453 | we arrange for the main got struct to have the right number of | |
4454 | global entries, but set its local_gotno such that the initial | |
4455 | offset of the primary GOT is zero. Remember that the primary GOT | |
4456 | will become the last item in the circular linked list, so it | |
4457 | points back to the master GOT. */ | |
4458 | gg->local_gotno = -g->global_gotno; | |
4459 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4460 | gg->tls_gotno = 0; |
f4416af6 AO |
4461 | assign = 0; |
4462 | gg->next = gg; | |
4463 | ||
4464 | do | |
4465 | { | |
4466 | struct mips_got_info *gn; | |
4467 | ||
861fb55a | 4468 | assign += htab->reserved_gotno; |
f4416af6 | 4469 | g->assigned_gotno = assign; |
c224138d RS |
4470 | g->local_gotno += assign; |
4471 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
4472 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4473 | ||
ead49a57 RS |
4474 | /* Take g out of the direct list, and push it onto the reversed |
4475 | list that gg points to. g->next is guaranteed to be nonnull after | |
4476 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4477 | gn = g->next; | |
4478 | g->next = gg->next; | |
4479 | gg->next = g; | |
4480 | ||
0f20cc35 DJ |
4481 | /* Set up any TLS entries. We always place the TLS entries after |
4482 | all non-TLS entries. */ | |
4483 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
4484 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
f4416af6 | 4485 | |
ead49a57 | 4486 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4487 | g = gn; |
0626d451 | 4488 | |
33bb52fb RS |
4489 | /* Forbid global symbols in every non-primary GOT from having |
4490 | lazy-binding stubs. */ | |
0626d451 | 4491 | if (g) |
33bb52fb | 4492 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4493 | } |
4494 | while (g); | |
4495 | ||
eea6121a | 4496 | got->size = (gg->next->local_gotno |
33bb52fb RS |
4497 | + gg->next->global_gotno |
4498 | + gg->next->tls_gotno) * MIPS_ELF_GOT_SIZE (abfd); | |
4499 | ||
4500 | needed_relocs = 0; | |
4501 | set_got_offset_arg.value = MIPS_ELF_GOT_SIZE (abfd); | |
4502 | set_got_offset_arg.info = info; | |
4503 | for (g = gg->next; g && g->next != gg; g = g->next) | |
4504 | { | |
4505 | unsigned int save_assign; | |
4506 | ||
4507 | /* Assign offsets to global GOT entries. */ | |
4508 | save_assign = g->assigned_gotno; | |
4509 | g->assigned_gotno = g->local_gotno; | |
4510 | set_got_offset_arg.g = g; | |
4511 | set_got_offset_arg.needed_relocs = 0; | |
4512 | htab_traverse (g->got_entries, | |
4513 | mips_elf_set_global_got_offset, | |
4514 | &set_got_offset_arg); | |
4515 | needed_relocs += set_got_offset_arg.needed_relocs; | |
4516 | BFD_ASSERT (g->assigned_gotno - g->local_gotno <= g->global_gotno); | |
4517 | ||
4518 | g->assigned_gotno = save_assign; | |
4519 | if (info->shared) | |
4520 | { | |
4521 | needed_relocs += g->local_gotno - g->assigned_gotno; | |
4522 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno | |
4523 | + g->next->global_gotno | |
4524 | + g->next->tls_gotno | |
861fb55a | 4525 | + htab->reserved_gotno); |
33bb52fb RS |
4526 | } |
4527 | } | |
4528 | ||
4529 | if (needed_relocs) | |
4530 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4531 | needed_relocs); | |
143d77c5 | 4532 | |
f4416af6 AO |
4533 | return TRUE; |
4534 | } | |
143d77c5 | 4535 | |
b49e97c9 TS |
4536 | \f |
4537 | /* Returns the first relocation of type r_type found, beginning with | |
4538 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4539 | ||
4540 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4541 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4542 | const Elf_Internal_Rela *relocation, | |
4543 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4544 | { |
c000e262 TS |
4545 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4546 | ||
b49e97c9 TS |
4547 | while (relocation < relend) |
4548 | { | |
c000e262 TS |
4549 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4550 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4551 | return relocation; |
4552 | ||
4553 | ++relocation; | |
4554 | } | |
4555 | ||
4556 | /* We didn't find it. */ | |
b49e97c9 TS |
4557 | return NULL; |
4558 | } | |
4559 | ||
4560 | /* Return whether a relocation is against a local symbol. */ | |
4561 | ||
b34976b6 | 4562 | static bfd_boolean |
9719ad41 RS |
4563 | mips_elf_local_relocation_p (bfd *input_bfd, |
4564 | const Elf_Internal_Rela *relocation, | |
4565 | asection **local_sections, | |
4566 | bfd_boolean check_forced) | |
b49e97c9 TS |
4567 | { |
4568 | unsigned long r_symndx; | |
4569 | Elf_Internal_Shdr *symtab_hdr; | |
4570 | struct mips_elf_link_hash_entry *h; | |
4571 | size_t extsymoff; | |
4572 | ||
4573 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4574 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4575 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
4576 | ||
4577 | if (r_symndx < extsymoff) | |
b34976b6 | 4578 | return TRUE; |
b49e97c9 | 4579 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 4580 | return TRUE; |
b49e97c9 TS |
4581 | |
4582 | if (check_forced) | |
4583 | { | |
4584 | /* Look up the hash table to check whether the symbol | |
4585 | was forced local. */ | |
4586 | h = (struct mips_elf_link_hash_entry *) | |
4587 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
4588 | /* Find the real hash-table entry for this symbol. */ | |
4589 | while (h->root.root.type == bfd_link_hash_indirect | |
4590 | || h->root.root.type == bfd_link_hash_warning) | |
4591 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
f5385ebf | 4592 | if (h->root.forced_local) |
b34976b6 | 4593 | return TRUE; |
b49e97c9 TS |
4594 | } |
4595 | ||
b34976b6 | 4596 | return FALSE; |
b49e97c9 TS |
4597 | } |
4598 | \f | |
4599 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4600 | ||
a7ebbfdf | 4601 | bfd_vma |
9719ad41 | 4602 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4603 | { |
4604 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4605 | /* VALUE is negative. */ | |
4606 | value |= ((bfd_vma) - 1) << bits; | |
4607 | ||
4608 | return value; | |
4609 | } | |
4610 | ||
4611 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4612 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4613 | BITS. */ |
4614 | ||
b34976b6 | 4615 | static bfd_boolean |
9719ad41 | 4616 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4617 | { |
4618 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4619 | ||
4620 | if (svalue > (1 << (bits - 1)) - 1) | |
4621 | /* The value is too big. */ | |
b34976b6 | 4622 | return TRUE; |
b49e97c9 TS |
4623 | else if (svalue < -(1 << (bits - 1))) |
4624 | /* The value is too small. */ | |
b34976b6 | 4625 | return TRUE; |
b49e97c9 TS |
4626 | |
4627 | /* All is well. */ | |
b34976b6 | 4628 | return FALSE; |
b49e97c9 TS |
4629 | } |
4630 | ||
4631 | /* Calculate the %high function. */ | |
4632 | ||
4633 | static bfd_vma | |
9719ad41 | 4634 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4635 | { |
4636 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4637 | } | |
4638 | ||
4639 | /* Calculate the %higher function. */ | |
4640 | ||
4641 | static bfd_vma | |
9719ad41 | 4642 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4643 | { |
4644 | #ifdef BFD64 | |
4645 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4646 | #else | |
4647 | abort (); | |
c5ae1840 | 4648 | return MINUS_ONE; |
b49e97c9 TS |
4649 | #endif |
4650 | } | |
4651 | ||
4652 | /* Calculate the %highest function. */ | |
4653 | ||
4654 | static bfd_vma | |
9719ad41 | 4655 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4656 | { |
4657 | #ifdef BFD64 | |
b15e6682 | 4658 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4659 | #else |
4660 | abort (); | |
c5ae1840 | 4661 | return MINUS_ONE; |
b49e97c9 TS |
4662 | #endif |
4663 | } | |
4664 | \f | |
4665 | /* Create the .compact_rel section. */ | |
4666 | ||
b34976b6 | 4667 | static bfd_boolean |
9719ad41 RS |
4668 | mips_elf_create_compact_rel_section |
4669 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4670 | { |
4671 | flagword flags; | |
4672 | register asection *s; | |
4673 | ||
4674 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
4675 | { | |
4676 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4677 | | SEC_READONLY); | |
4678 | ||
3496cb2a | 4679 | s = bfd_make_section_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4680 | if (s == NULL |
b49e97c9 TS |
4681 | || ! bfd_set_section_alignment (abfd, s, |
4682 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4683 | return FALSE; |
b49e97c9 | 4684 | |
eea6121a | 4685 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4686 | } |
4687 | ||
b34976b6 | 4688 | return TRUE; |
b49e97c9 TS |
4689 | } |
4690 | ||
4691 | /* Create the .got section to hold the global offset table. */ | |
4692 | ||
b34976b6 | 4693 | static bfd_boolean |
23cc69b6 | 4694 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
4695 | { |
4696 | flagword flags; | |
4697 | register asection *s; | |
4698 | struct elf_link_hash_entry *h; | |
14a793b2 | 4699 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
4700 | struct mips_got_info *g; |
4701 | bfd_size_type amt; | |
0a44bf69 RS |
4702 | struct mips_elf_link_hash_table *htab; |
4703 | ||
4704 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 4705 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
4706 | |
4707 | /* This function may be called more than once. */ | |
23cc69b6 RS |
4708 | if (htab->sgot) |
4709 | return TRUE; | |
b49e97c9 TS |
4710 | |
4711 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4712 | | SEC_LINKER_CREATED); | |
4713 | ||
72b4917c TS |
4714 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4715 | in the function stub generation and in the linker script. */ | |
3496cb2a | 4716 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
b49e97c9 | 4717 | if (s == NULL |
72b4917c | 4718 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4719 | return FALSE; |
a8028dd0 | 4720 | htab->sgot = s; |
b49e97c9 TS |
4721 | |
4722 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4723 | linker script because we don't want to define the symbol if we | |
4724 | are not creating a global offset table. */ | |
14a793b2 | 4725 | bh = NULL; |
b49e97c9 TS |
4726 | if (! (_bfd_generic_link_add_one_symbol |
4727 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4728 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4729 | return FALSE; |
14a793b2 AM |
4730 | |
4731 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4732 | h->non_elf = 0; |
4733 | h->def_regular = 1; | |
b49e97c9 | 4734 | h->type = STT_OBJECT; |
d329bcd1 | 4735 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4736 | |
4737 | if (info->shared | |
c152c796 | 4738 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4739 | return FALSE; |
b49e97c9 | 4740 | |
b49e97c9 | 4741 | amt = sizeof (struct mips_got_info); |
9719ad41 | 4742 | g = bfd_alloc (abfd, amt); |
b49e97c9 | 4743 | if (g == NULL) |
b34976b6 | 4744 | return FALSE; |
b49e97c9 | 4745 | g->global_gotsym = NULL; |
e3d54347 | 4746 | g->global_gotno = 0; |
23cc69b6 | 4747 | g->reloc_only_gotno = 0; |
0f20cc35 | 4748 | g->tls_gotno = 0; |
861fb55a | 4749 | g->local_gotno = 0; |
c224138d | 4750 | g->page_gotno = 0; |
861fb55a | 4751 | g->assigned_gotno = 0; |
f4416af6 AO |
4752 | g->bfd2got = NULL; |
4753 | g->next = NULL; | |
0f20cc35 | 4754 | g->tls_ldm_offset = MINUS_ONE; |
b15e6682 | 4755 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
9719ad41 | 4756 | mips_elf_got_entry_eq, NULL); |
b15e6682 AO |
4757 | if (g->got_entries == NULL) |
4758 | return FALSE; | |
c224138d RS |
4759 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4760 | mips_got_page_entry_eq, NULL); | |
4761 | if (g->got_page_entries == NULL) | |
4762 | return FALSE; | |
a8028dd0 | 4763 | htab->got_info = g; |
f0abc2a1 | 4764 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
4765 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4766 | ||
861fb55a DJ |
4767 | /* We also need a .got.plt section when generating PLTs. */ |
4768 | s = bfd_make_section_with_flags (abfd, ".got.plt", | |
4769 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4770 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4771 | if (s == NULL) | |
4772 | return FALSE; | |
4773 | htab->sgotplt = s; | |
0a44bf69 | 4774 | |
b34976b6 | 4775 | return TRUE; |
b49e97c9 | 4776 | } |
b49e97c9 | 4777 | \f |
0a44bf69 RS |
4778 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4779 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4780 | shared objects; they are not used in executables. */ | |
4781 | ||
4782 | static bfd_boolean | |
4783 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4784 | { | |
4785 | return (mips_elf_hash_table (info)->is_vxworks | |
4786 | && info->shared | |
4787 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4788 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4789 | } | |
861fb55a DJ |
4790 | |
4791 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
4792 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
4793 | which determines whether the destination function ever requires a | |
4794 | stub. */ | |
4795 | ||
4796 | static bfd_boolean | |
4797 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type) | |
4798 | { | |
4799 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
4800 | where the onus is on the compiler or programmer to perform any | |
4801 | necessary initialization of $25. Sometimes such initialization | |
4802 | is unnecessary; for example, -mno-shared functions do not use | |
4803 | the incoming value of $25, and may therefore be called directly. */ | |
4804 | if (PIC_OBJECT_P (input_bfd)) | |
4805 | return FALSE; | |
4806 | ||
4807 | switch (r_type) | |
4808 | { | |
4809 | case R_MIPS_26: | |
4810 | case R_MIPS_PC16: | |
4811 | case R_MIPS16_26: | |
4812 | return TRUE; | |
4813 | ||
4814 | default: | |
4815 | return FALSE; | |
4816 | } | |
4817 | } | |
0a44bf69 | 4818 | \f |
b49e97c9 TS |
4819 | /* Calculate the value produced by the RELOCATION (which comes from |
4820 | the INPUT_BFD). The ADDEND is the addend to use for this | |
4821 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
4822 | ||
4823 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 CF |
4824 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
4825 | is a MIPS16 jump to non-MIPS16 code, or vice versa. | |
b49e97c9 TS |
4826 | |
4827 | This function returns bfd_reloc_continue if the caller need take no | |
4828 | further action regarding this relocation, bfd_reloc_notsupported if | |
4829 | something goes dramatically wrong, bfd_reloc_overflow if an | |
4830 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
4831 | ||
4832 | static bfd_reloc_status_type | |
9719ad41 RS |
4833 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
4834 | asection *input_section, | |
4835 | struct bfd_link_info *info, | |
4836 | const Elf_Internal_Rela *relocation, | |
4837 | bfd_vma addend, reloc_howto_type *howto, | |
4838 | Elf_Internal_Sym *local_syms, | |
4839 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
4840 | const char **namep, |
4841 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 4842 | bfd_boolean save_addend) |
b49e97c9 TS |
4843 | { |
4844 | /* The eventual value we will return. */ | |
4845 | bfd_vma value; | |
4846 | /* The address of the symbol against which the relocation is | |
4847 | occurring. */ | |
4848 | bfd_vma symbol = 0; | |
4849 | /* The final GP value to be used for the relocatable, executable, or | |
4850 | shared object file being produced. */ | |
0a61c8c2 | 4851 | bfd_vma gp; |
b49e97c9 TS |
4852 | /* The place (section offset or address) of the storage unit being |
4853 | relocated. */ | |
4854 | bfd_vma p; | |
4855 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 4856 | bfd_vma gp0; |
b49e97c9 TS |
4857 | /* The offset into the global offset table at which the address of |
4858 | the relocation entry symbol, adjusted by the addend, resides | |
4859 | during execution. */ | |
4860 | bfd_vma g = MINUS_ONE; | |
4861 | /* The section in which the symbol referenced by the relocation is | |
4862 | located. */ | |
4863 | asection *sec = NULL; | |
4864 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 4865 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 4866 | symbol. */ |
b34976b6 AM |
4867 | bfd_boolean local_p, was_local_p; |
4868 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
4869 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
4870 | /* TRUE if the symbol referred to by this relocation is |
4871 | "__gnu_local_gp". */ | |
4872 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
4873 | Elf_Internal_Shdr *symtab_hdr; |
4874 | size_t extsymoff; | |
4875 | unsigned long r_symndx; | |
4876 | int r_type; | |
b34976b6 | 4877 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 4878 | relocation value. */ |
b34976b6 AM |
4879 | bfd_boolean overflowed_p; |
4880 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
4881 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
0a44bf69 RS |
4882 | struct mips_elf_link_hash_table *htab; |
4883 | bfd *dynobj; | |
4884 | ||
4885 | dynobj = elf_hash_table (info)->dynobj; | |
4886 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 4887 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
4888 | |
4889 | /* Parse the relocation. */ | |
4890 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4891 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
4892 | p = (input_section->output_section->vma | |
4893 | + input_section->output_offset | |
4894 | + relocation->r_offset); | |
4895 | ||
4896 | /* Assume that there will be no overflow. */ | |
b34976b6 | 4897 | overflowed_p = FALSE; |
b49e97c9 TS |
4898 | |
4899 | /* Figure out whether or not the symbol is local, and get the offset | |
4900 | used in the array of hash table entries. */ | |
4901 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4902 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 4903 | local_sections, FALSE); |
bce03d3d | 4904 | was_local_p = local_p; |
b49e97c9 TS |
4905 | if (! elf_bad_symtab (input_bfd)) |
4906 | extsymoff = symtab_hdr->sh_info; | |
4907 | else | |
4908 | { | |
4909 | /* The symbol table does not follow the rule that local symbols | |
4910 | must come before globals. */ | |
4911 | extsymoff = 0; | |
4912 | } | |
4913 | ||
4914 | /* Figure out the value of the symbol. */ | |
4915 | if (local_p) | |
4916 | { | |
4917 | Elf_Internal_Sym *sym; | |
4918 | ||
4919 | sym = local_syms + r_symndx; | |
4920 | sec = local_sections[r_symndx]; | |
4921 | ||
4922 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
4923 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
4924 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 4925 | symbol += sym->st_value; |
d4df96e6 L |
4926 | if ((sec->flags & SEC_MERGE) |
4927 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4928 | { | |
4929 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
4930 | addend -= symbol; | |
4931 | addend += sec->output_section->vma + sec->output_offset; | |
4932 | } | |
b49e97c9 TS |
4933 | |
4934 | /* MIPS16 text labels should be treated as odd. */ | |
30c09090 | 4935 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
4936 | ++symbol; |
4937 | ||
4938 | /* Record the name of this symbol, for our caller. */ | |
4939 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
4940 | symtab_hdr->sh_link, | |
4941 | sym->st_name); | |
4942 | if (*namep == '\0') | |
4943 | *namep = bfd_section_name (input_bfd, sec); | |
4944 | ||
30c09090 | 4945 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
b49e97c9 TS |
4946 | } |
4947 | else | |
4948 | { | |
560e09e9 NC |
4949 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
4950 | ||
b49e97c9 TS |
4951 | /* For global symbols we look up the symbol in the hash-table. */ |
4952 | h = ((struct mips_elf_link_hash_entry *) | |
4953 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
4954 | /* Find the real hash-table entry for this symbol. */ | |
4955 | while (h->root.root.type == bfd_link_hash_indirect | |
4956 | || h->root.root.type == bfd_link_hash_warning) | |
4957 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4958 | ||
4959 | /* Record the name of this symbol, for our caller. */ | |
4960 | *namep = h->root.root.root.string; | |
4961 | ||
4962 | /* See if this is the special _gp_disp symbol. Note that such a | |
4963 | symbol must always be a global symbol. */ | |
560e09e9 | 4964 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
4965 | && ! NEWABI_P (input_bfd)) |
4966 | { | |
4967 | /* Relocations against _gp_disp are permitted only with | |
4968 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 4969 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
4970 | return bfd_reloc_notsupported; |
4971 | ||
b34976b6 | 4972 | gp_disp_p = TRUE; |
b49e97c9 | 4973 | } |
bbe506e8 TS |
4974 | /* See if this is the special _gp symbol. Note that such a |
4975 | symbol must always be a global symbol. */ | |
4976 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
4977 | gnu_local_gp_p = TRUE; | |
4978 | ||
4979 | ||
b49e97c9 TS |
4980 | /* If this symbol is defined, calculate its address. Note that |
4981 | _gp_disp is a magic symbol, always implicitly defined by the | |
4982 | linker, so it's inappropriate to check to see whether or not | |
4983 | its defined. */ | |
4984 | else if ((h->root.root.type == bfd_link_hash_defined | |
4985 | || h->root.root.type == bfd_link_hash_defweak) | |
4986 | && h->root.root.u.def.section) | |
4987 | { | |
4988 | sec = h->root.root.u.def.section; | |
4989 | if (sec->output_section) | |
4990 | symbol = (h->root.root.u.def.value | |
4991 | + sec->output_section->vma | |
4992 | + sec->output_offset); | |
4993 | else | |
4994 | symbol = h->root.root.u.def.value; | |
4995 | } | |
4996 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
4997 | /* We allow relocations against undefined weak symbols, giving | |
4998 | it the value zero, so that you can undefined weak functions | |
4999 | and check to see if they exist by looking at their | |
5000 | addresses. */ | |
5001 | symbol = 0; | |
59c2e50f | 5002 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5003 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5004 | symbol = 0; | |
a4d0f181 TS |
5005 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5006 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5007 | { |
5008 | /* If this is a dynamic link, we should have created a | |
5009 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
5010 | in in _bfd_mips_elf_create_dynamic_sections. | |
5011 | Otherwise, we should define the symbol with a value of 0. | |
5012 | FIXME: It should probably get into the symbol table | |
5013 | somehow as well. */ | |
5014 | BFD_ASSERT (! info->shared); | |
5015 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
5016 | symbol = 0; | |
5017 | } | |
5e2b0d47 NC |
5018 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5019 | { | |
5020 | /* This is an optional symbol - an Irix specific extension to the | |
5021 | ELF spec. Ignore it for now. | |
5022 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5023 | than simply ignoring them, but we do not handle this for now. | |
5024 | For information see the "64-bit ELF Object File Specification" | |
5025 | which is available from here: | |
5026 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5027 | symbol = 0; | |
5028 | } | |
e7e2196d MR |
5029 | else if ((*info->callbacks->undefined_symbol) |
5030 | (info, h->root.root.root.string, input_bfd, | |
5031 | input_section, relocation->r_offset, | |
5032 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) | |
5033 | || ELF_ST_VISIBILITY (h->root.other))) | |
5034 | { | |
5035 | return bfd_reloc_undefined; | |
5036 | } | |
b49e97c9 TS |
5037 | else |
5038 | { | |
e7e2196d | 5039 | return bfd_reloc_notsupported; |
b49e97c9 TS |
5040 | } |
5041 | ||
30c09090 | 5042 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
b49e97c9 TS |
5043 | } |
5044 | ||
738e5348 RS |
5045 | /* If this is a reference to a 16-bit function with a stub, we need |
5046 | to redirect the relocation to the stub unless: | |
5047 | ||
5048 | (a) the relocation is for a MIPS16 JAL; | |
5049 | ||
5050 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5051 | non-MIPS16 uses of the GOT slot; or | |
5052 | ||
5053 | (c) the section allows direct references to MIPS16 functions. */ | |
5054 | if (r_type != R_MIPS16_26 | |
5055 | && !info->relocatable | |
5056 | && ((h != NULL | |
5057 | && h->fn_stub != NULL | |
5058 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 TS |
5059 | || (local_p |
5060 | && elf_tdata (input_bfd)->local_stubs != NULL | |
b49e97c9 | 5061 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
738e5348 | 5062 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5063 | { |
5064 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5065 | have already noticed that we were going to need the | |
5066 | stub. */ | |
5067 | if (local_p) | |
5068 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
5069 | else | |
5070 | { | |
5071 | BFD_ASSERT (h->need_fn_stub); | |
5072 | sec = h->fn_stub; | |
5073 | } | |
5074 | ||
5075 | symbol = sec->output_section->vma + sec->output_offset; | |
f38c2df5 TS |
5076 | /* The target is 16-bit, but the stub isn't. */ |
5077 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
5078 | } |
5079 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
5080 | need to redirect the call to the stub. Note that we specifically |
5081 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
5082 | use an indirect stub instead. */ | |
1049f94e | 5083 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 5084 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 TS |
5085 | || (local_p |
5086 | && elf_tdata (input_bfd)->local_call_stubs != NULL | |
5087 | && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
5088 | && !target_is_16_bit_code_p) |
5089 | { | |
b9d58d71 TS |
5090 | if (local_p) |
5091 | sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx]; | |
5092 | else | |
b49e97c9 | 5093 | { |
b9d58d71 TS |
5094 | /* If both call_stub and call_fp_stub are defined, we can figure |
5095 | out which one to use by checking which one appears in the input | |
5096 | file. */ | |
5097 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5098 | { |
b9d58d71 TS |
5099 | asection *o; |
5100 | ||
5101 | sec = NULL; | |
5102 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5103 | { |
b9d58d71 TS |
5104 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5105 | { | |
5106 | sec = h->call_fp_stub; | |
5107 | break; | |
5108 | } | |
b49e97c9 | 5109 | } |
b9d58d71 TS |
5110 | if (sec == NULL) |
5111 | sec = h->call_stub; | |
b49e97c9 | 5112 | } |
b9d58d71 | 5113 | else if (h->call_stub != NULL) |
b49e97c9 | 5114 | sec = h->call_stub; |
b9d58d71 TS |
5115 | else |
5116 | sec = h->call_fp_stub; | |
5117 | } | |
b49e97c9 | 5118 | |
eea6121a | 5119 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5120 | symbol = sec->output_section->vma + sec->output_offset; |
5121 | } | |
861fb55a DJ |
5122 | /* If this is a direct call to a PIC function, redirect to the |
5123 | non-PIC stub. */ | |
5124 | else if (h != NULL && h->la25_stub | |
5125 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type)) | |
5126 | symbol = (h->la25_stub->stub_section->output_section->vma | |
5127 | + h->la25_stub->stub_section->output_offset | |
5128 | + h->la25_stub->offset); | |
b49e97c9 TS |
5129 | |
5130 | /* Calls from 16-bit code to 32-bit code and vice versa require the | |
38a7df63 CF |
5131 | mode change. */ |
5132 | *cross_mode_jump_p = !info->relocatable | |
5133 | && ((r_type == R_MIPS16_26 && !target_is_16_bit_code_p) | |
5134 | || ((r_type == R_MIPS_26 || r_type == R_MIPS_JALR) | |
5135 | && target_is_16_bit_code_p)); | |
b49e97c9 TS |
5136 | |
5137 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 5138 | local_sections, TRUE); |
b49e97c9 | 5139 | |
0a61c8c2 RS |
5140 | gp0 = _bfd_get_gp_value (input_bfd); |
5141 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5142 | if (htab->got_info) |
a8028dd0 | 5143 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5144 | |
5145 | if (gnu_local_gp_p) | |
5146 | symbol = gp; | |
5147 | ||
5148 | /* If we haven't already determined the GOT offset, oand we're going | |
5149 | to need it, get it now. */ | |
b49e97c9 TS |
5150 | switch (r_type) |
5151 | { | |
0fdc1bf1 | 5152 | case R_MIPS_GOT_PAGE: |
93a2b7ae | 5153 | case R_MIPS_GOT_OFST: |
d25aed71 RS |
5154 | /* We need to decay to GOT_DISP/addend if the symbol doesn't |
5155 | bind locally. */ | |
5156 | local_p = local_p || _bfd_elf_symbol_refs_local_p (&h->root, info, 1); | |
93a2b7ae | 5157 | if (local_p || r_type == R_MIPS_GOT_OFST) |
0fdc1bf1 AO |
5158 | break; |
5159 | /* Fall through. */ | |
5160 | ||
738e5348 RS |
5161 | case R_MIPS16_CALL16: |
5162 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5163 | case R_MIPS_CALL16: |
5164 | case R_MIPS_GOT16: | |
5165 | case R_MIPS_GOT_DISP: | |
5166 | case R_MIPS_GOT_HI16: | |
5167 | case R_MIPS_CALL_HI16: | |
5168 | case R_MIPS_GOT_LO16: | |
5169 | case R_MIPS_CALL_LO16: | |
0f20cc35 DJ |
5170 | case R_MIPS_TLS_GD: |
5171 | case R_MIPS_TLS_GOTTPREL: | |
5172 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5173 | /* Find the index into the GOT where this value is located. */ |
0f20cc35 DJ |
5174 | if (r_type == R_MIPS_TLS_LDM) |
5175 | { | |
0a44bf69 | 5176 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5177 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5178 | if (g == MINUS_ONE) |
5179 | return bfd_reloc_outofrange; | |
5180 | } | |
5181 | else if (!local_p) | |
b49e97c9 | 5182 | { |
0a44bf69 RS |
5183 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5184 | entry, which is initialized to point at the PLT stub. */ | |
5185 | if (htab->is_vxworks | |
5186 | && (r_type == R_MIPS_CALL_HI16 | |
5187 | || r_type == R_MIPS_CALL_LO16 | |
738e5348 | 5188 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5189 | { |
5190 | BFD_ASSERT (addend == 0); | |
5191 | BFD_ASSERT (h->root.needs_plt); | |
5192 | g = mips_elf_gotplt_index (info, &h->root); | |
5193 | } | |
5194 | else | |
b49e97c9 | 5195 | { |
0a44bf69 RS |
5196 | /* GOT_PAGE may take a non-zero addend, that is ignored in a |
5197 | GOT_PAGE relocation that decays to GOT_DISP because the | |
5198 | symbol turns out to be global. The addend is then added | |
5199 | as GOT_OFST. */ | |
5200 | BFD_ASSERT (addend == 0 || r_type == R_MIPS_GOT_PAGE); | |
5201 | g = mips_elf_global_got_index (dynobj, input_bfd, | |
5202 | &h->root, r_type, info); | |
5203 | if (h->tls_type == GOT_NORMAL | |
5204 | && (! elf_hash_table(info)->dynamic_sections_created | |
5205 | || (info->shared | |
5206 | && (info->symbolic || h->root.forced_local) | |
5207 | && h->root.def_regular))) | |
a8028dd0 RS |
5208 | /* This is a static link or a -Bsymbolic link. The |
5209 | symbol is defined locally, or was forced to be local. | |
5210 | We must initialize this entry in the GOT. */ | |
5211 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->sgot->contents + g); | |
b49e97c9 TS |
5212 | } |
5213 | } | |
0a44bf69 | 5214 | else if (!htab->is_vxworks |
738e5348 | 5215 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5216 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5217 | break; |
5218 | else | |
5219 | { | |
5c18022e | 5220 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5221 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5222 | if (g == MINUS_ONE) |
5223 | return bfd_reloc_outofrange; | |
5224 | } | |
5225 | ||
5226 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5227 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5228 | break; |
b49e97c9 TS |
5229 | } |
5230 | ||
0a44bf69 RS |
5231 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5232 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5233 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5234 | { | |
5235 | Elf_Internal_Rela outrel; | |
5236 | bfd_byte *loc; | |
5237 | asection *s; | |
5238 | ||
5239 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5240 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5241 | ||
5242 | outrel.r_offset = (input_section->output_section->vma | |
5243 | + input_section->output_offset | |
5244 | + relocation->r_offset); | |
5245 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5246 | outrel.r_addend = addend; | |
5247 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5248 | |
5249 | /* If we've written this relocation for a readonly section, | |
5250 | we need to set DF_TEXTREL again, so that we do not delete the | |
5251 | DT_TEXTREL tag. */ | |
5252 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5253 | info->flags |= DF_TEXTREL; | |
5254 | ||
0a44bf69 RS |
5255 | *valuep = 0; |
5256 | return bfd_reloc_ok; | |
5257 | } | |
5258 | ||
b49e97c9 TS |
5259 | /* Figure out what kind of relocation is being performed. */ |
5260 | switch (r_type) | |
5261 | { | |
5262 | case R_MIPS_NONE: | |
5263 | return bfd_reloc_continue; | |
5264 | ||
5265 | case R_MIPS_16: | |
a7ebbfdf | 5266 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
5267 | overflowed_p = mips_elf_overflow_p (value, 16); |
5268 | break; | |
5269 | ||
5270 | case R_MIPS_32: | |
5271 | case R_MIPS_REL32: | |
5272 | case R_MIPS_64: | |
5273 | if ((info->shared | |
861fb55a | 5274 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5275 | && h != NULL |
f5385ebf | 5276 | && h->root.def_dynamic |
861fb55a DJ |
5277 | && !h->root.def_regular |
5278 | && !h->has_static_relocs)) | |
b49e97c9 | 5279 | && r_symndx != 0 |
9a59ad6b DJ |
5280 | && (h == NULL |
5281 | || h->root.root.type != bfd_link_hash_undefweak | |
5282 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
5283 | && (input_section->flags & SEC_ALLOC) != 0) |
5284 | { | |
861fb55a | 5285 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5286 | where the symbol will end up. So, we create a relocation |
5287 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5288 | linker. We must do the same for executable references to |
5289 | shared library symbols, unless we've decided to use copy | |
5290 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5291 | value = addend; |
5292 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5293 | info, | |
5294 | relocation, | |
5295 | h, | |
5296 | sec, | |
5297 | symbol, | |
5298 | &value, | |
5299 | input_section)) | |
5300 | return bfd_reloc_undefined; | |
5301 | } | |
5302 | else | |
5303 | { | |
5304 | if (r_type != R_MIPS_REL32) | |
5305 | value = symbol + addend; | |
5306 | else | |
5307 | value = addend; | |
5308 | } | |
5309 | value &= howto->dst_mask; | |
092dcd75 CD |
5310 | break; |
5311 | ||
5312 | case R_MIPS_PC32: | |
5313 | value = symbol + addend - p; | |
5314 | value &= howto->dst_mask; | |
b49e97c9 TS |
5315 | break; |
5316 | ||
b49e97c9 TS |
5317 | case R_MIPS16_26: |
5318 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5319 | R_MIPS_26. It's only the storage of the relocated field into | |
5320 | the output file that's different. That's handled in | |
5321 | mips_elf_perform_relocation. So, we just fall through to the | |
5322 | R_MIPS_26 case here. */ | |
5323 | case R_MIPS_26: | |
5324 | if (local_p) | |
30ac9238 | 5325 | value = ((addend | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
b49e97c9 | 5326 | else |
728b2f21 ILT |
5327 | { |
5328 | value = (_bfd_mips_elf_sign_extend (addend, 28) + symbol) >> 2; | |
c314987d RS |
5329 | if (h->root.root.type != bfd_link_hash_undefweak) |
5330 | overflowed_p = (value >> 26) != ((p + 4) >> 28); | |
728b2f21 | 5331 | } |
b49e97c9 TS |
5332 | value &= howto->dst_mask; |
5333 | break; | |
5334 | ||
0f20cc35 DJ |
5335 | case R_MIPS_TLS_DTPREL_HI16: |
5336 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) | |
5337 | & howto->dst_mask); | |
5338 | break; | |
5339 | ||
5340 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5341 | case R_MIPS_TLS_DTPREL32: |
5342 | case R_MIPS_TLS_DTPREL64: | |
0f20cc35 DJ |
5343 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5344 | break; | |
5345 | ||
5346 | case R_MIPS_TLS_TPREL_HI16: | |
5347 | value = (mips_elf_high (addend + symbol - tprel_base (info)) | |
5348 | & howto->dst_mask); | |
5349 | break; | |
5350 | ||
5351 | case R_MIPS_TLS_TPREL_LO16: | |
5352 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; | |
5353 | break; | |
5354 | ||
b49e97c9 | 5355 | case R_MIPS_HI16: |
d6f16593 | 5356 | case R_MIPS16_HI16: |
b49e97c9 TS |
5357 | if (!gp_disp_p) |
5358 | { | |
5359 | value = mips_elf_high (addend + symbol); | |
5360 | value &= howto->dst_mask; | |
5361 | } | |
5362 | else | |
5363 | { | |
d6f16593 MR |
5364 | /* For MIPS16 ABI code we generate this sequence |
5365 | 0: li $v0,%hi(_gp_disp) | |
5366 | 4: addiupc $v1,%lo(_gp_disp) | |
5367 | 8: sll $v0,16 | |
5368 | 12: addu $v0,$v1 | |
5369 | 14: move $gp,$v0 | |
5370 | So the offsets of hi and lo relocs are the same, but the | |
5371 | $pc is four higher than $t9 would be, so reduce | |
5372 | both reloc addends by 4. */ | |
5373 | if (r_type == R_MIPS16_HI16) | |
5374 | value = mips_elf_high (addend + gp - p - 4); | |
5375 | else | |
5376 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5377 | overflowed_p = mips_elf_overflow_p (value, 16); |
5378 | } | |
5379 | break; | |
5380 | ||
5381 | case R_MIPS_LO16: | |
d6f16593 | 5382 | case R_MIPS16_LO16: |
b49e97c9 TS |
5383 | if (!gp_disp_p) |
5384 | value = (symbol + addend) & howto->dst_mask; | |
5385 | else | |
5386 | { | |
d6f16593 MR |
5387 | /* See the comment for R_MIPS16_HI16 above for the reason |
5388 | for this conditional. */ | |
5389 | if (r_type == R_MIPS16_LO16) | |
5390 | value = addend + gp - p; | |
5391 | else | |
5392 | value = addend + gp - p + 4; | |
b49e97c9 | 5393 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5394 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5395 | _gp_disp are normally generated from the .cpload |
5396 | pseudo-op. It generates code that normally looks like | |
5397 | this: | |
5398 | ||
5399 | lui $gp,%hi(_gp_disp) | |
5400 | addiu $gp,$gp,%lo(_gp_disp) | |
5401 | addu $gp,$gp,$t9 | |
5402 | ||
5403 | Here $t9 holds the address of the function being called, | |
5404 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5405 | relocation can easily overflow in this situation, but the | |
5406 | R_MIPS_HI16 relocation will handle the overflow. | |
5407 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5408 | not check for overflow here. */ | |
5409 | } | |
5410 | break; | |
5411 | ||
5412 | case R_MIPS_LITERAL: | |
5413 | /* Because we don't merge literal sections, we can handle this | |
5414 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5415 | shared literals, and then we will need to additional work | |
5416 | here. */ | |
5417 | ||
5418 | /* Fall through. */ | |
5419 | ||
5420 | case R_MIPS16_GPREL: | |
5421 | /* The R_MIPS16_GPREL performs the same calculation as | |
5422 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5423 | order. We don't need to do anything special here; the | |
5424 | differences are handled in mips_elf_perform_relocation. */ | |
5425 | case R_MIPS_GPREL16: | |
bce03d3d AO |
5426 | /* Only sign-extend the addend if it was extracted from the |
5427 | instruction. If the addend was separate, leave it alone, | |
5428 | otherwise we may lose significant bits. */ | |
5429 | if (howto->partial_inplace) | |
a7ebbfdf | 5430 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5431 | value = symbol + addend - gp; |
5432 | /* If the symbol was local, any earlier relocatable links will | |
5433 | have adjusted its addend with the gp offset, so compensate | |
5434 | for that now. Don't do it for symbols forced local in this | |
5435 | link, though, since they won't have had the gp offset applied | |
5436 | to them before. */ | |
5437 | if (was_local_p) | |
5438 | value += gp0; | |
b49e97c9 TS |
5439 | overflowed_p = mips_elf_overflow_p (value, 16); |
5440 | break; | |
5441 | ||
738e5348 RS |
5442 | case R_MIPS16_GOT16: |
5443 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
5444 | case R_MIPS_GOT16: |
5445 | case R_MIPS_CALL16: | |
0a44bf69 | 5446 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 5447 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 5448 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 5449 | { |
b34976b6 | 5450 | bfd_boolean forced; |
b49e97c9 | 5451 | |
b49e97c9 | 5452 | forced = ! mips_elf_local_relocation_p (input_bfd, relocation, |
b34976b6 | 5453 | local_sections, FALSE); |
5c18022e | 5454 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
f4416af6 | 5455 | symbol + addend, forced); |
b49e97c9 TS |
5456 | if (value == MINUS_ONE) |
5457 | return bfd_reloc_outofrange; | |
5458 | value | |
a8028dd0 | 5459 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5460 | overflowed_p = mips_elf_overflow_p (value, 16); |
5461 | break; | |
5462 | } | |
5463 | ||
5464 | /* Fall through. */ | |
5465 | ||
0f20cc35 DJ |
5466 | case R_MIPS_TLS_GD: |
5467 | case R_MIPS_TLS_GOTTPREL: | |
5468 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5469 | case R_MIPS_GOT_DISP: |
0fdc1bf1 | 5470 | got_disp: |
b49e97c9 TS |
5471 | value = g; |
5472 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5473 | break; | |
5474 | ||
5475 | case R_MIPS_GPREL32: | |
bce03d3d AO |
5476 | value = (addend + symbol + gp0 - gp); |
5477 | if (!save_addend) | |
5478 | value &= howto->dst_mask; | |
b49e97c9 TS |
5479 | break; |
5480 | ||
5481 | case R_MIPS_PC16: | |
bad36eac DJ |
5482 | case R_MIPS_GNU_REL16_S2: |
5483 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
5484 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
5485 | value >>= howto->rightshift; |
5486 | value &= howto->dst_mask; | |
b49e97c9 TS |
5487 | break; |
5488 | ||
5489 | case R_MIPS_GOT_HI16: | |
5490 | case R_MIPS_CALL_HI16: | |
5491 | /* We're allowed to handle these two relocations identically. | |
5492 | The dynamic linker is allowed to handle the CALL relocations | |
5493 | differently by creating a lazy evaluation stub. */ | |
5494 | value = g; | |
5495 | value = mips_elf_high (value); | |
5496 | value &= howto->dst_mask; | |
5497 | break; | |
5498 | ||
5499 | case R_MIPS_GOT_LO16: | |
5500 | case R_MIPS_CALL_LO16: | |
5501 | value = g & howto->dst_mask; | |
5502 | break; | |
5503 | ||
5504 | case R_MIPS_GOT_PAGE: | |
0fdc1bf1 AO |
5505 | /* GOT_PAGE relocations that reference non-local symbols decay |
5506 | to GOT_DISP. The corresponding GOT_OFST relocation decays to | |
5507 | 0. */ | |
93a2b7ae | 5508 | if (! local_p) |
0fdc1bf1 | 5509 | goto got_disp; |
5c18022e | 5510 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
5511 | if (value == MINUS_ONE) |
5512 | return bfd_reloc_outofrange; | |
a8028dd0 | 5513 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5514 | overflowed_p = mips_elf_overflow_p (value, 16); |
5515 | break; | |
5516 | ||
5517 | case R_MIPS_GOT_OFST: | |
93a2b7ae | 5518 | if (local_p) |
5c18022e | 5519 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
5520 | else |
5521 | value = addend; | |
b49e97c9 TS |
5522 | overflowed_p = mips_elf_overflow_p (value, 16); |
5523 | break; | |
5524 | ||
5525 | case R_MIPS_SUB: | |
5526 | value = symbol - addend; | |
5527 | value &= howto->dst_mask; | |
5528 | break; | |
5529 | ||
5530 | case R_MIPS_HIGHER: | |
5531 | value = mips_elf_higher (addend + symbol); | |
5532 | value &= howto->dst_mask; | |
5533 | break; | |
5534 | ||
5535 | case R_MIPS_HIGHEST: | |
5536 | value = mips_elf_highest (addend + symbol); | |
5537 | value &= howto->dst_mask; | |
5538 | break; | |
5539 | ||
5540 | case R_MIPS_SCN_DISP: | |
5541 | value = symbol + addend - sec->output_offset; | |
5542 | value &= howto->dst_mask; | |
5543 | break; | |
5544 | ||
b49e97c9 | 5545 | case R_MIPS_JALR: |
1367d393 ILT |
5546 | /* This relocation is only a hint. In some cases, we optimize |
5547 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
5548 | when the symbol does not resolve locally. */ |
5549 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 ILT |
5550 | return bfd_reloc_continue; |
5551 | value = symbol + addend; | |
5552 | break; | |
b49e97c9 | 5553 | |
1367d393 | 5554 | case R_MIPS_PJUMP: |
b49e97c9 TS |
5555 | case R_MIPS_GNU_VTINHERIT: |
5556 | case R_MIPS_GNU_VTENTRY: | |
5557 | /* We don't do anything with these at present. */ | |
5558 | return bfd_reloc_continue; | |
5559 | ||
5560 | default: | |
5561 | /* An unrecognized relocation type. */ | |
5562 | return bfd_reloc_notsupported; | |
5563 | } | |
5564 | ||
5565 | /* Store the VALUE for our caller. */ | |
5566 | *valuep = value; | |
5567 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
5568 | } | |
5569 | ||
5570 | /* Obtain the field relocated by RELOCATION. */ | |
5571 | ||
5572 | static bfd_vma | |
9719ad41 RS |
5573 | mips_elf_obtain_contents (reloc_howto_type *howto, |
5574 | const Elf_Internal_Rela *relocation, | |
5575 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
5576 | { |
5577 | bfd_vma x; | |
5578 | bfd_byte *location = contents + relocation->r_offset; | |
5579 | ||
5580 | /* Obtain the bytes. */ | |
5581 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
5582 | ||
b49e97c9 TS |
5583 | return x; |
5584 | } | |
5585 | ||
5586 | /* It has been determined that the result of the RELOCATION is the | |
5587 | VALUE. Use HOWTO to place VALUE into the output file at the | |
5588 | appropriate position. The SECTION is the section to which the | |
38a7df63 CF |
5589 | relocation applies. |
5590 | CROSS_MODE_JUMP_P is true if the relocation field | |
5591 | is a MIPS16 jump to non-MIPS16 code, or vice versa. | |
b49e97c9 | 5592 | |
b34976b6 | 5593 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 5594 | |
b34976b6 | 5595 | static bfd_boolean |
9719ad41 RS |
5596 | mips_elf_perform_relocation (struct bfd_link_info *info, |
5597 | reloc_howto_type *howto, | |
5598 | const Elf_Internal_Rela *relocation, | |
5599 | bfd_vma value, bfd *input_bfd, | |
5600 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 5601 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
5602 | { |
5603 | bfd_vma x; | |
5604 | bfd_byte *location; | |
5605 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5606 | ||
5607 | /* Figure out where the relocation is occurring. */ | |
5608 | location = contents + relocation->r_offset; | |
5609 | ||
d6f16593 MR |
5610 | _bfd_mips16_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
5611 | ||
b49e97c9 TS |
5612 | /* Obtain the current value. */ |
5613 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5614 | ||
5615 | /* Clear the field we are setting. */ | |
5616 | x &= ~howto->dst_mask; | |
5617 | ||
b49e97c9 TS |
5618 | /* Set the field. */ |
5619 | x |= (value & howto->dst_mask); | |
5620 | ||
5621 | /* If required, turn JAL into JALX. */ | |
38a7df63 | 5622 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 5623 | { |
b34976b6 | 5624 | bfd_boolean ok; |
b49e97c9 TS |
5625 | bfd_vma opcode = x >> 26; |
5626 | bfd_vma jalx_opcode; | |
5627 | ||
5628 | /* Check to see if the opcode is already JAL or JALX. */ | |
5629 | if (r_type == R_MIPS16_26) | |
5630 | { | |
5631 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5632 | jalx_opcode = 0x7; | |
5633 | } | |
5634 | else | |
5635 | { | |
5636 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5637 | jalx_opcode = 0x1d; | |
5638 | } | |
5639 | ||
5640 | /* If the opcode is not JAL or JALX, there's a problem. */ | |
5641 | if (!ok) | |
5642 | { | |
5643 | (*_bfd_error_handler) | |
d003868e AM |
5644 | (_("%B: %A+0x%lx: jump to stub routine which is not jal"), |
5645 | input_bfd, | |
5646 | input_section, | |
b49e97c9 TS |
5647 | (unsigned long) relocation->r_offset); |
5648 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5649 | return FALSE; |
b49e97c9 TS |
5650 | } |
5651 | ||
5652 | /* Make this the JALX opcode. */ | |
5653 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5654 | } | |
5655 | ||
38a7df63 CF |
5656 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
5657 | range. */ | |
cd8d5a82 | 5658 | if (!info->relocatable |
38a7df63 | 5659 | && !cross_mode_jump_p |
cd8d5a82 CF |
5660 | && ((JAL_TO_BAL_P (input_bfd) |
5661 | && r_type == R_MIPS_26 | |
5662 | && (x >> 26) == 0x3) /* jal addr */ | |
5663 | || (JALR_TO_BAL_P (input_bfd) | |
5664 | && r_type == R_MIPS_JALR | |
38a7df63 CF |
5665 | && x == 0x0320f809) /* jalr t9 */ |
5666 | || (JR_TO_B_P (input_bfd) | |
5667 | && r_type == R_MIPS_JALR | |
5668 | && x == 0x03200008))) /* jr t9 */ | |
1367d393 ILT |
5669 | { |
5670 | bfd_vma addr; | |
5671 | bfd_vma dest; | |
5672 | bfd_signed_vma off; | |
5673 | ||
5674 | addr = (input_section->output_section->vma | |
5675 | + input_section->output_offset | |
5676 | + relocation->r_offset | |
5677 | + 4); | |
5678 | if (r_type == R_MIPS_26) | |
5679 | dest = (value << 2) | ((addr >> 28) << 28); | |
5680 | else | |
5681 | dest = value; | |
5682 | off = dest - addr; | |
5683 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 CF |
5684 | { |
5685 | if (x == 0x03200008) /* jr t9 */ | |
5686 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ | |
5687 | else | |
5688 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
5689 | } | |
1367d393 ILT |
5690 | } |
5691 | ||
b49e97c9 TS |
5692 | /* Put the value into the output. */ |
5693 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 MR |
5694 | |
5695 | _bfd_mips16_elf_reloc_shuffle(input_bfd, r_type, !info->relocatable, | |
5696 | location); | |
5697 | ||
b34976b6 | 5698 | return TRUE; |
b49e97c9 | 5699 | } |
b49e97c9 | 5700 | \f |
b49e97c9 TS |
5701 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
5702 | is the original relocation, which is now being transformed into a | |
5703 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
5704 | caller should store the result in place of the original addend. */ | |
5705 | ||
b34976b6 | 5706 | static bfd_boolean |
9719ad41 RS |
5707 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
5708 | struct bfd_link_info *info, | |
5709 | const Elf_Internal_Rela *rel, | |
5710 | struct mips_elf_link_hash_entry *h, | |
5711 | asection *sec, bfd_vma symbol, | |
5712 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 5713 | { |
947216bf | 5714 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
5715 | asection *sreloc; |
5716 | bfd *dynobj; | |
5717 | int r_type; | |
5d41f0b6 RS |
5718 | long indx; |
5719 | bfd_boolean defined_p; | |
0a44bf69 | 5720 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 5721 | |
0a44bf69 | 5722 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
5723 | BFD_ASSERT (htab != NULL); |
5724 | ||
b49e97c9 TS |
5725 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
5726 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 5727 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
5728 | BFD_ASSERT (sreloc != NULL); |
5729 | BFD_ASSERT (sreloc->contents != NULL); | |
5730 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 5731 | < sreloc->size); |
b49e97c9 | 5732 | |
b49e97c9 TS |
5733 | outrel[0].r_offset = |
5734 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
5735 | if (ABI_64_P (output_bfd)) |
5736 | { | |
5737 | outrel[1].r_offset = | |
5738 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
5739 | outrel[2].r_offset = | |
5740 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
5741 | } | |
b49e97c9 | 5742 | |
c5ae1840 | 5743 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 5744 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
5745 | return TRUE; |
5746 | ||
5747 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
5748 | { |
5749 | /* The relocation field has been converted into a relative value of | |
5750 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
5751 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 5752 | *addendp += symbol; |
5d41f0b6 | 5753 | return TRUE; |
0d591ff7 | 5754 | } |
b49e97c9 | 5755 | |
5d41f0b6 RS |
5756 | /* We must now calculate the dynamic symbol table index to use |
5757 | in the relocation. */ | |
5758 | if (h != NULL | |
6ece8836 TS |
5759 | && (!h->root.def_regular |
5760 | || (info->shared && !info->symbolic && !h->root.forced_local))) | |
5d41f0b6 RS |
5761 | { |
5762 | indx = h->root.dynindx; | |
5763 | if (SGI_COMPAT (output_bfd)) | |
5764 | defined_p = h->root.def_regular; | |
5765 | else | |
5766 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
5767 | relocation field. It therefore treats relocs against | |
5768 | defined symbols in the same way as relocs against | |
5769 | undefined symbols. */ | |
5770 | defined_p = FALSE; | |
5771 | } | |
b49e97c9 TS |
5772 | else |
5773 | { | |
5d41f0b6 RS |
5774 | if (sec != NULL && bfd_is_abs_section (sec)) |
5775 | indx = 0; | |
5776 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 5777 | { |
5d41f0b6 RS |
5778 | bfd_set_error (bfd_error_bad_value); |
5779 | return FALSE; | |
b49e97c9 TS |
5780 | } |
5781 | else | |
5782 | { | |
5d41f0b6 | 5783 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
5784 | if (indx == 0) |
5785 | { | |
5786 | asection *osec = htab->root.text_index_section; | |
5787 | indx = elf_section_data (osec)->dynindx; | |
5788 | } | |
5d41f0b6 RS |
5789 | if (indx == 0) |
5790 | abort (); | |
b49e97c9 TS |
5791 | } |
5792 | ||
5d41f0b6 RS |
5793 | /* Instead of generating a relocation using the section |
5794 | symbol, we may as well make it a fully relative | |
5795 | relocation. We want to avoid generating relocations to | |
5796 | local symbols because we used to generate them | |
5797 | incorrectly, without adding the original symbol value, | |
5798 | which is mandated by the ABI for section symbols. In | |
5799 | order to give dynamic loaders and applications time to | |
5800 | phase out the incorrect use, we refrain from emitting | |
5801 | section-relative relocations. It's not like they're | |
5802 | useful, after all. This should be a bit more efficient | |
5803 | as well. */ | |
5804 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
5805 | the ABI says that relocations against STN_UNDEF should have | |
5806 | a symbol value of 0. Irix rld honors this, so relocations | |
5807 | against STN_UNDEF have no effect. */ | |
5808 | if (!SGI_COMPAT (output_bfd)) | |
5809 | indx = 0; | |
5810 | defined_p = TRUE; | |
b49e97c9 TS |
5811 | } |
5812 | ||
5d41f0b6 RS |
5813 | /* If the relocation was previously an absolute relocation and |
5814 | this symbol will not be referred to by the relocation, we must | |
5815 | adjust it by the value we give it in the dynamic symbol table. | |
5816 | Otherwise leave the job up to the dynamic linker. */ | |
5817 | if (defined_p && r_type != R_MIPS_REL32) | |
5818 | *addendp += symbol; | |
5819 | ||
0a44bf69 RS |
5820 | if (htab->is_vxworks) |
5821 | /* VxWorks uses non-relative relocations for this. */ | |
5822 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
5823 | else | |
5824 | /* The relocation is always an REL32 relocation because we don't | |
5825 | know where the shared library will wind up at load-time. */ | |
5826 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
5827 | R_MIPS_REL32); | |
5828 | ||
5d41f0b6 RS |
5829 | /* For strict adherence to the ABI specification, we should |
5830 | generate a R_MIPS_64 relocation record by itself before the | |
5831 | _REL32/_64 record as well, such that the addend is read in as | |
5832 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
5833 | However, since none of the existing ELF64 MIPS dynamic | |
5834 | loaders seems to care, we don't waste space with these | |
5835 | artificial relocations. If this turns out to not be true, | |
5836 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
5837 | as to make room for a pair of dynamic relocations per | |
5838 | invocation if ABI_64_P, and here we should generate an | |
5839 | additional relocation record with R_MIPS_64 by itself for a | |
5840 | NULL symbol before this relocation record. */ | |
5841 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
5842 | ABI_64_P (output_bfd) | |
5843 | ? R_MIPS_64 | |
5844 | : R_MIPS_NONE); | |
5845 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
5846 | ||
5847 | /* Adjust the output offset of the relocation to reference the | |
5848 | correct location in the output file. */ | |
5849 | outrel[0].r_offset += (input_section->output_section->vma | |
5850 | + input_section->output_offset); | |
5851 | outrel[1].r_offset += (input_section->output_section->vma | |
5852 | + input_section->output_offset); | |
5853 | outrel[2].r_offset += (input_section->output_section->vma | |
5854 | + input_section->output_offset); | |
5855 | ||
b49e97c9 TS |
5856 | /* Put the relocation back out. We have to use the special |
5857 | relocation outputter in the 64-bit case since the 64-bit | |
5858 | relocation format is non-standard. */ | |
5859 | if (ABI_64_P (output_bfd)) | |
5860 | { | |
5861 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
5862 | (output_bfd, &outrel[0], | |
5863 | (sreloc->contents | |
5864 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
5865 | } | |
0a44bf69 RS |
5866 | else if (htab->is_vxworks) |
5867 | { | |
5868 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
5869 | outrel[0].r_addend = *addendp; | |
5870 | bfd_elf32_swap_reloca_out | |
5871 | (output_bfd, &outrel[0], | |
5872 | (sreloc->contents | |
5873 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
5874 | } | |
b49e97c9 | 5875 | else |
947216bf AM |
5876 | bfd_elf32_swap_reloc_out |
5877 | (output_bfd, &outrel[0], | |
5878 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 5879 | |
b49e97c9 TS |
5880 | /* We've now added another relocation. */ |
5881 | ++sreloc->reloc_count; | |
5882 | ||
5883 | /* Make sure the output section is writable. The dynamic linker | |
5884 | will be writing to it. */ | |
5885 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
5886 | |= SHF_WRITE; | |
5887 | ||
5888 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 5889 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 TS |
5890 | { |
5891 | asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
5892 | bfd_byte *cr; | |
5893 | ||
5894 | if (scpt) | |
5895 | { | |
5896 | Elf32_crinfo cptrel; | |
5897 | ||
5898 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5899 | cptrel.vaddr = (rel->r_offset | |
5900 | + input_section->output_section->vma | |
5901 | + input_section->output_offset); | |
5902 | if (r_type == R_MIPS_REL32) | |
5903 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
5904 | else | |
5905 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
5906 | mips_elf_set_cr_dist2to (cptrel, 0); | |
5907 | cptrel.konst = *addendp; | |
5908 | ||
5909 | cr = (scpt->contents | |
5910 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 5911 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
5912 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
5913 | ((Elf32_External_crinfo *) cr | |
5914 | + scpt->reloc_count)); | |
5915 | ++scpt->reloc_count; | |
5916 | } | |
5917 | } | |
5918 | ||
943284cc DJ |
5919 | /* If we've written this relocation for a readonly section, |
5920 | we need to set DF_TEXTREL again, so that we do not delete the | |
5921 | DT_TEXTREL tag. */ | |
5922 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5923 | info->flags |= DF_TEXTREL; | |
5924 | ||
b34976b6 | 5925 | return TRUE; |
b49e97c9 TS |
5926 | } |
5927 | \f | |
b49e97c9 TS |
5928 | /* Return the MACH for a MIPS e_flags value. */ |
5929 | ||
5930 | unsigned long | |
9719ad41 | 5931 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
5932 | { |
5933 | switch (flags & EF_MIPS_MACH) | |
5934 | { | |
5935 | case E_MIPS_MACH_3900: | |
5936 | return bfd_mach_mips3900; | |
5937 | ||
5938 | case E_MIPS_MACH_4010: | |
5939 | return bfd_mach_mips4010; | |
5940 | ||
5941 | case E_MIPS_MACH_4100: | |
5942 | return bfd_mach_mips4100; | |
5943 | ||
5944 | case E_MIPS_MACH_4111: | |
5945 | return bfd_mach_mips4111; | |
5946 | ||
00707a0e RS |
5947 | case E_MIPS_MACH_4120: |
5948 | return bfd_mach_mips4120; | |
5949 | ||
b49e97c9 TS |
5950 | case E_MIPS_MACH_4650: |
5951 | return bfd_mach_mips4650; | |
5952 | ||
00707a0e RS |
5953 | case E_MIPS_MACH_5400: |
5954 | return bfd_mach_mips5400; | |
5955 | ||
5956 | case E_MIPS_MACH_5500: | |
5957 | return bfd_mach_mips5500; | |
5958 | ||
0d2e43ed ILT |
5959 | case E_MIPS_MACH_9000: |
5960 | return bfd_mach_mips9000; | |
5961 | ||
b49e97c9 TS |
5962 | case E_MIPS_MACH_SB1: |
5963 | return bfd_mach_mips_sb1; | |
5964 | ||
350cc38d MS |
5965 | case E_MIPS_MACH_LS2E: |
5966 | return bfd_mach_mips_loongson_2e; | |
5967 | ||
5968 | case E_MIPS_MACH_LS2F: | |
5969 | return bfd_mach_mips_loongson_2f; | |
5970 | ||
6f179bd0 AN |
5971 | case E_MIPS_MACH_OCTEON: |
5972 | return bfd_mach_mips_octeon; | |
5973 | ||
52b6b6b9 JM |
5974 | case E_MIPS_MACH_XLR: |
5975 | return bfd_mach_mips_xlr; | |
5976 | ||
b49e97c9 TS |
5977 | default: |
5978 | switch (flags & EF_MIPS_ARCH) | |
5979 | { | |
5980 | default: | |
5981 | case E_MIPS_ARCH_1: | |
5982 | return bfd_mach_mips3000; | |
b49e97c9 TS |
5983 | |
5984 | case E_MIPS_ARCH_2: | |
5985 | return bfd_mach_mips6000; | |
b49e97c9 TS |
5986 | |
5987 | case E_MIPS_ARCH_3: | |
5988 | return bfd_mach_mips4000; | |
b49e97c9 TS |
5989 | |
5990 | case E_MIPS_ARCH_4: | |
5991 | return bfd_mach_mips8000; | |
b49e97c9 TS |
5992 | |
5993 | case E_MIPS_ARCH_5: | |
5994 | return bfd_mach_mips5; | |
b49e97c9 TS |
5995 | |
5996 | case E_MIPS_ARCH_32: | |
5997 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
5998 | |
5999 | case E_MIPS_ARCH_64: | |
6000 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6001 | |
6002 | case E_MIPS_ARCH_32R2: | |
6003 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6004 | |
6005 | case E_MIPS_ARCH_64R2: | |
6006 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
6007 | } |
6008 | } | |
6009 | ||
6010 | return 0; | |
6011 | } | |
6012 | ||
6013 | /* Return printable name for ABI. */ | |
6014 | ||
6015 | static INLINE char * | |
9719ad41 | 6016 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6017 | { |
6018 | flagword flags; | |
6019 | ||
6020 | flags = elf_elfheader (abfd)->e_flags; | |
6021 | switch (flags & EF_MIPS_ABI) | |
6022 | { | |
6023 | case 0: | |
6024 | if (ABI_N32_P (abfd)) | |
6025 | return "N32"; | |
6026 | else if (ABI_64_P (abfd)) | |
6027 | return "64"; | |
6028 | else | |
6029 | return "none"; | |
6030 | case E_MIPS_ABI_O32: | |
6031 | return "O32"; | |
6032 | case E_MIPS_ABI_O64: | |
6033 | return "O64"; | |
6034 | case E_MIPS_ABI_EABI32: | |
6035 | return "EABI32"; | |
6036 | case E_MIPS_ABI_EABI64: | |
6037 | return "EABI64"; | |
6038 | default: | |
6039 | return "unknown abi"; | |
6040 | } | |
6041 | } | |
6042 | \f | |
6043 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6044 | other is for small objects. All the small objects are kept | |
6045 | together, and then referenced via the gp pointer, which yields | |
6046 | faster assembler code. This is what we use for the small common | |
6047 | section. This approach is copied from ecoff.c. */ | |
6048 | static asection mips_elf_scom_section; | |
6049 | static asymbol mips_elf_scom_symbol; | |
6050 | static asymbol *mips_elf_scom_symbol_ptr; | |
6051 | ||
6052 | /* MIPS ELF also uses an acommon section, which represents an | |
6053 | allocated common symbol which may be overridden by a | |
6054 | definition in a shared library. */ | |
6055 | static asection mips_elf_acom_section; | |
6056 | static asymbol mips_elf_acom_symbol; | |
6057 | static asymbol *mips_elf_acom_symbol_ptr; | |
6058 | ||
738e5348 | 6059 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
6060 | |
6061 | void | |
9719ad41 | 6062 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
6063 | { |
6064 | elf_symbol_type *elfsym; | |
6065 | ||
738e5348 | 6066 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
6067 | elfsym = (elf_symbol_type *) asym; |
6068 | switch (elfsym->internal_elf_sym.st_shndx) | |
6069 | { | |
6070 | case SHN_MIPS_ACOMMON: | |
6071 | /* This section is used in a dynamically linked executable file. | |
6072 | It is an allocated common section. The dynamic linker can | |
6073 | either resolve these symbols to something in a shared | |
6074 | library, or it can just leave them here. For our purposes, | |
6075 | we can consider these symbols to be in a new section. */ | |
6076 | if (mips_elf_acom_section.name == NULL) | |
6077 | { | |
6078 | /* Initialize the acommon section. */ | |
6079 | mips_elf_acom_section.name = ".acommon"; | |
6080 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6081 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6082 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6083 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6084 | mips_elf_acom_symbol.name = ".acommon"; | |
6085 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6086 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6087 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6088 | } | |
6089 | asym->section = &mips_elf_acom_section; | |
6090 | break; | |
6091 | ||
6092 | case SHN_COMMON: | |
6093 | /* Common symbols less than the GP size are automatically | |
6094 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6095 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6096 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6097 | || IRIX_COMPAT (abfd) == ict_irix6) |
6098 | break; | |
6099 | /* Fall through. */ | |
6100 | case SHN_MIPS_SCOMMON: | |
6101 | if (mips_elf_scom_section.name == NULL) | |
6102 | { | |
6103 | /* Initialize the small common section. */ | |
6104 | mips_elf_scom_section.name = ".scommon"; | |
6105 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6106 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6107 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6108 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6109 | mips_elf_scom_symbol.name = ".scommon"; | |
6110 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6111 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6112 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6113 | } | |
6114 | asym->section = &mips_elf_scom_section; | |
6115 | asym->value = elfsym->internal_elf_sym.st_size; | |
6116 | break; | |
6117 | ||
6118 | case SHN_MIPS_SUNDEFINED: | |
6119 | asym->section = bfd_und_section_ptr; | |
6120 | break; | |
6121 | ||
b49e97c9 | 6122 | case SHN_MIPS_TEXT: |
00b4930b TS |
6123 | { |
6124 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6125 | ||
6126 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
6127 | if (section != NULL) | |
6128 | { | |
6129 | asym->section = section; | |
6130 | /* MIPS_TEXT is a bit special, the address is not an offset | |
6131 | to the base of the .text section. So substract the section | |
6132 | base address to make it an offset. */ | |
6133 | asym->value -= section->vma; | |
6134 | } | |
6135 | } | |
b49e97c9 TS |
6136 | break; |
6137 | ||
6138 | case SHN_MIPS_DATA: | |
00b4930b TS |
6139 | { |
6140 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6141 | ||
6142 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
6143 | if (section != NULL) | |
6144 | { | |
6145 | asym->section = section; | |
6146 | /* MIPS_DATA is a bit special, the address is not an offset | |
6147 | to the base of the .data section. So substract the section | |
6148 | base address to make it an offset. */ | |
6149 | asym->value -= section->vma; | |
6150 | } | |
6151 | } | |
b49e97c9 | 6152 | break; |
b49e97c9 | 6153 | } |
738e5348 RS |
6154 | |
6155 | /* If this is an odd-valued function symbol, assume it's a MIPS16 one. */ | |
6156 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC | |
6157 | && (asym->value & 1) != 0) | |
6158 | { | |
6159 | asym->value--; | |
6160 | elfsym->internal_elf_sym.st_other | |
6161 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
6162 | } | |
b49e97c9 TS |
6163 | } |
6164 | \f | |
8c946ed5 RS |
6165 | /* Implement elf_backend_eh_frame_address_size. This differs from |
6166 | the default in the way it handles EABI64. | |
6167 | ||
6168 | EABI64 was originally specified as an LP64 ABI, and that is what | |
6169 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
6170 | historically accepted the combination of -mabi=eabi and -mlong32, | |
6171 | and this ILP32 variation has become semi-official over time. | |
6172 | Both forms use elf32 and have pointer-sized FDE addresses. | |
6173 | ||
6174 | If an EABI object was generated by GCC 4.0 or above, it will have | |
6175 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
6176 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
6177 | have no special marking to distinguish them from LP64 objects. | |
6178 | ||
6179 | We don't want users of the official LP64 ABI to be punished for the | |
6180 | existence of the ILP32 variant, but at the same time, we don't want | |
6181 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
6182 | We therefore take the following approach: | |
6183 | ||
6184 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
6185 | determine the pointer size. | |
6186 | ||
6187 | - Otherwise check the type of the first relocation. Assume that | |
6188 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
6189 | ||
6190 | - Otherwise punt. | |
6191 | ||
6192 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
6193 | compilers because, in the kind of output generated by those compilers, | |
6194 | the first relocation will be associated with either a CIE personality | |
6195 | routine or an FDE start address. Furthermore, the compilers never | |
6196 | used a special (non-pointer) encoding for this ABI. | |
6197 | ||
6198 | Checking the relocation type should also be safe because there is no | |
6199 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
6200 | did so. */ | |
6201 | ||
6202 | unsigned int | |
6203 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
6204 | { | |
6205 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
6206 | return 8; | |
6207 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
6208 | { | |
6209 | bfd_boolean long32_p, long64_p; | |
6210 | ||
6211 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
6212 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
6213 | if (long32_p && long64_p) | |
6214 | return 0; | |
6215 | if (long32_p) | |
6216 | return 4; | |
6217 | if (long64_p) | |
6218 | return 8; | |
6219 | ||
6220 | if (sec->reloc_count > 0 | |
6221 | && elf_section_data (sec)->relocs != NULL | |
6222 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
6223 | == R_MIPS_64)) | |
6224 | return 8; | |
6225 | ||
6226 | return 0; | |
6227 | } | |
6228 | return 4; | |
6229 | } | |
6230 | \f | |
174fd7f9 RS |
6231 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
6232 | relocations against two unnamed section symbols to resolve to the | |
6233 | same address. For example, if we have code like: | |
6234 | ||
6235 | lw $4,%got_disp(.data)($gp) | |
6236 | lw $25,%got_disp(.text)($gp) | |
6237 | jalr $25 | |
6238 | ||
6239 | then the linker will resolve both relocations to .data and the program | |
6240 | will jump there rather than to .text. | |
6241 | ||
6242 | We can work around this problem by giving names to local section symbols. | |
6243 | This is also what the MIPSpro tools do. */ | |
6244 | ||
6245 | bfd_boolean | |
6246 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
6247 | { | |
6248 | return SGI_COMPAT (abfd); | |
6249 | } | |
6250 | \f | |
b49e97c9 TS |
6251 | /* Work over a section just before writing it out. This routine is |
6252 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
6253 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
6254 | a better way. */ | |
6255 | ||
b34976b6 | 6256 | bfd_boolean |
9719ad41 | 6257 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
6258 | { |
6259 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
6260 | && hdr->sh_size > 0) | |
6261 | { | |
6262 | bfd_byte buf[4]; | |
6263 | ||
6264 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
6265 | BFD_ASSERT (hdr->contents == NULL); | |
6266 | ||
6267 | if (bfd_seek (abfd, | |
6268 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
6269 | SEEK_SET) != 0) | |
b34976b6 | 6270 | return FALSE; |
b49e97c9 | 6271 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6272 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6273 | return FALSE; |
b49e97c9 TS |
6274 | } |
6275 | ||
6276 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
6277 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
6278 | && mips_elf_section_data (hdr->bfd_section) != NULL |
6279 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
6280 | { |
6281 | bfd_byte *contents, *l, *lend; | |
6282 | ||
f0abc2a1 AM |
6283 | /* We stored the section contents in the tdata field in the |
6284 | set_section_contents routine. We save the section contents | |
6285 | so that we don't have to read them again. | |
b49e97c9 TS |
6286 | At this point we know that elf_gp is set, so we can look |
6287 | through the section contents to see if there is an | |
6288 | ODK_REGINFO structure. */ | |
6289 | ||
f0abc2a1 | 6290 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
6291 | l = contents; |
6292 | lend = contents + hdr->sh_size; | |
6293 | while (l + sizeof (Elf_External_Options) <= lend) | |
6294 | { | |
6295 | Elf_Internal_Options intopt; | |
6296 | ||
6297 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6298 | &intopt); | |
1bc8074d MR |
6299 | if (intopt.size < sizeof (Elf_External_Options)) |
6300 | { | |
6301 | (*_bfd_error_handler) | |
6302 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6303 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6304 | break; | |
6305 | } | |
b49e97c9 TS |
6306 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6307 | { | |
6308 | bfd_byte buf[8]; | |
6309 | ||
6310 | if (bfd_seek (abfd, | |
6311 | (hdr->sh_offset | |
6312 | + (l - contents) | |
6313 | + sizeof (Elf_External_Options) | |
6314 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
6315 | SEEK_SET) != 0) | |
b34976b6 | 6316 | return FALSE; |
b49e97c9 | 6317 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6318 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 6319 | return FALSE; |
b49e97c9 TS |
6320 | } |
6321 | else if (intopt.kind == ODK_REGINFO) | |
6322 | { | |
6323 | bfd_byte buf[4]; | |
6324 | ||
6325 | if (bfd_seek (abfd, | |
6326 | (hdr->sh_offset | |
6327 | + (l - contents) | |
6328 | + sizeof (Elf_External_Options) | |
6329 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
6330 | SEEK_SET) != 0) | |
b34976b6 | 6331 | return FALSE; |
b49e97c9 | 6332 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6333 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6334 | return FALSE; |
b49e97c9 TS |
6335 | } |
6336 | l += intopt.size; | |
6337 | } | |
6338 | } | |
6339 | ||
6340 | if (hdr->bfd_section != NULL) | |
6341 | { | |
6342 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
6343 | ||
2d0f9ad9 JM |
6344 | /* .sbss is not handled specially here because the GNU/Linux |
6345 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
6346 | changing it back to NOBITS breaks the binary. The entry in | |
6347 | _bfd_mips_elf_special_sections will ensure the correct flags | |
6348 | are set on .sbss if BFD creates it without reading it from an | |
6349 | input file, and without special handling here the flags set | |
6350 | on it in an input file will be followed. */ | |
b49e97c9 TS |
6351 | if (strcmp (name, ".sdata") == 0 |
6352 | || strcmp (name, ".lit8") == 0 | |
6353 | || strcmp (name, ".lit4") == 0) | |
6354 | { | |
6355 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
6356 | hdr->sh_type = SHT_PROGBITS; | |
6357 | } | |
b49e97c9 TS |
6358 | else if (strcmp (name, ".srdata") == 0) |
6359 | { | |
6360 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
6361 | hdr->sh_type = SHT_PROGBITS; | |
6362 | } | |
6363 | else if (strcmp (name, ".compact_rel") == 0) | |
6364 | { | |
6365 | hdr->sh_flags = 0; | |
6366 | hdr->sh_type = SHT_PROGBITS; | |
6367 | } | |
6368 | else if (strcmp (name, ".rtproc") == 0) | |
6369 | { | |
6370 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
6371 | { | |
6372 | unsigned int adjust; | |
6373 | ||
6374 | adjust = hdr->sh_size % hdr->sh_addralign; | |
6375 | if (adjust != 0) | |
6376 | hdr->sh_size += hdr->sh_addralign - adjust; | |
6377 | } | |
6378 | } | |
6379 | } | |
6380 | ||
b34976b6 | 6381 | return TRUE; |
b49e97c9 TS |
6382 | } |
6383 | ||
6384 | /* Handle a MIPS specific section when reading an object file. This | |
6385 | is called when elfcode.h finds a section with an unknown type. | |
6386 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
6387 | ||
6388 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
6389 | how to. */ | |
6390 | ||
b34976b6 | 6391 | bfd_boolean |
6dc132d9 L |
6392 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
6393 | Elf_Internal_Shdr *hdr, | |
6394 | const char *name, | |
6395 | int shindex) | |
b49e97c9 TS |
6396 | { |
6397 | flagword flags = 0; | |
6398 | ||
6399 | /* There ought to be a place to keep ELF backend specific flags, but | |
6400 | at the moment there isn't one. We just keep track of the | |
6401 | sections by their name, instead. Fortunately, the ABI gives | |
6402 | suggested names for all the MIPS specific sections, so we will | |
6403 | probably get away with this. */ | |
6404 | switch (hdr->sh_type) | |
6405 | { | |
6406 | case SHT_MIPS_LIBLIST: | |
6407 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 6408 | return FALSE; |
b49e97c9 TS |
6409 | break; |
6410 | case SHT_MIPS_MSYM: | |
6411 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 6412 | return FALSE; |
b49e97c9 TS |
6413 | break; |
6414 | case SHT_MIPS_CONFLICT: | |
6415 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 6416 | return FALSE; |
b49e97c9 TS |
6417 | break; |
6418 | case SHT_MIPS_GPTAB: | |
0112cd26 | 6419 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 6420 | return FALSE; |
b49e97c9 TS |
6421 | break; |
6422 | case SHT_MIPS_UCODE: | |
6423 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 6424 | return FALSE; |
b49e97c9 TS |
6425 | break; |
6426 | case SHT_MIPS_DEBUG: | |
6427 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 6428 | return FALSE; |
b49e97c9 TS |
6429 | flags = SEC_DEBUGGING; |
6430 | break; | |
6431 | case SHT_MIPS_REGINFO: | |
6432 | if (strcmp (name, ".reginfo") != 0 | |
6433 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 6434 | return FALSE; |
b49e97c9 TS |
6435 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
6436 | break; | |
6437 | case SHT_MIPS_IFACE: | |
6438 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 6439 | return FALSE; |
b49e97c9 TS |
6440 | break; |
6441 | case SHT_MIPS_CONTENT: | |
0112cd26 | 6442 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 6443 | return FALSE; |
b49e97c9 TS |
6444 | break; |
6445 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 6446 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 6447 | return FALSE; |
b49e97c9 TS |
6448 | break; |
6449 | case SHT_MIPS_DWARF: | |
1b315056 | 6450 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 6451 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 6452 | return FALSE; |
b49e97c9 TS |
6453 | break; |
6454 | case SHT_MIPS_SYMBOL_LIB: | |
6455 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 6456 | return FALSE; |
b49e97c9 TS |
6457 | break; |
6458 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
6459 | if (! CONST_STRNEQ (name, ".MIPS.events") |
6460 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 6461 | return FALSE; |
b49e97c9 TS |
6462 | break; |
6463 | default: | |
cc2e31b9 | 6464 | break; |
b49e97c9 TS |
6465 | } |
6466 | ||
6dc132d9 | 6467 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 6468 | return FALSE; |
b49e97c9 TS |
6469 | |
6470 | if (flags) | |
6471 | { | |
6472 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
6473 | (bfd_get_section_flags (abfd, | |
6474 | hdr->bfd_section) | |
6475 | | flags))) | |
b34976b6 | 6476 | return FALSE; |
b49e97c9 TS |
6477 | } |
6478 | ||
6479 | /* FIXME: We should record sh_info for a .gptab section. */ | |
6480 | ||
6481 | /* For a .reginfo section, set the gp value in the tdata information | |
6482 | from the contents of this section. We need the gp value while | |
6483 | processing relocs, so we just get it now. The .reginfo section | |
6484 | is not used in the 64-bit MIPS ELF ABI. */ | |
6485 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
6486 | { | |
6487 | Elf32_External_RegInfo ext; | |
6488 | Elf32_RegInfo s; | |
6489 | ||
9719ad41 RS |
6490 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
6491 | &ext, 0, sizeof ext)) | |
b34976b6 | 6492 | return FALSE; |
b49e97c9 TS |
6493 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
6494 | elf_gp (abfd) = s.ri_gp_value; | |
6495 | } | |
6496 | ||
6497 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
6498 | set the gp value based on what we find. We may see both | |
6499 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
6500 | they should agree. */ | |
6501 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
6502 | { | |
6503 | bfd_byte *contents, *l, *lend; | |
6504 | ||
9719ad41 | 6505 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 6506 | if (contents == NULL) |
b34976b6 | 6507 | return FALSE; |
b49e97c9 | 6508 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 6509 | 0, hdr->sh_size)) |
b49e97c9 TS |
6510 | { |
6511 | free (contents); | |
b34976b6 | 6512 | return FALSE; |
b49e97c9 TS |
6513 | } |
6514 | l = contents; | |
6515 | lend = contents + hdr->sh_size; | |
6516 | while (l + sizeof (Elf_External_Options) <= lend) | |
6517 | { | |
6518 | Elf_Internal_Options intopt; | |
6519 | ||
6520 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6521 | &intopt); | |
1bc8074d MR |
6522 | if (intopt.size < sizeof (Elf_External_Options)) |
6523 | { | |
6524 | (*_bfd_error_handler) | |
6525 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6526 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6527 | break; | |
6528 | } | |
b49e97c9 TS |
6529 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6530 | { | |
6531 | Elf64_Internal_RegInfo intreg; | |
6532 | ||
6533 | bfd_mips_elf64_swap_reginfo_in | |
6534 | (abfd, | |
6535 | ((Elf64_External_RegInfo *) | |
6536 | (l + sizeof (Elf_External_Options))), | |
6537 | &intreg); | |
6538 | elf_gp (abfd) = intreg.ri_gp_value; | |
6539 | } | |
6540 | else if (intopt.kind == ODK_REGINFO) | |
6541 | { | |
6542 | Elf32_RegInfo intreg; | |
6543 | ||
6544 | bfd_mips_elf32_swap_reginfo_in | |
6545 | (abfd, | |
6546 | ((Elf32_External_RegInfo *) | |
6547 | (l + sizeof (Elf_External_Options))), | |
6548 | &intreg); | |
6549 | elf_gp (abfd) = intreg.ri_gp_value; | |
6550 | } | |
6551 | l += intopt.size; | |
6552 | } | |
6553 | free (contents); | |
6554 | } | |
6555 | ||
b34976b6 | 6556 | return TRUE; |
b49e97c9 TS |
6557 | } |
6558 | ||
6559 | /* Set the correct type for a MIPS ELF section. We do this by the | |
6560 | section name, which is a hack, but ought to work. This routine is | |
6561 | used by both the 32-bit and the 64-bit ABI. */ | |
6562 | ||
b34976b6 | 6563 | bfd_boolean |
9719ad41 | 6564 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 6565 | { |
0414f35b | 6566 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
6567 | |
6568 | if (strcmp (name, ".liblist") == 0) | |
6569 | { | |
6570 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 6571 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
6572 | /* The sh_link field is set in final_write_processing. */ |
6573 | } | |
6574 | else if (strcmp (name, ".conflict") == 0) | |
6575 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 6576 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
6577 | { |
6578 | hdr->sh_type = SHT_MIPS_GPTAB; | |
6579 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
6580 | /* The sh_info field is set in final_write_processing. */ | |
6581 | } | |
6582 | else if (strcmp (name, ".ucode") == 0) | |
6583 | hdr->sh_type = SHT_MIPS_UCODE; | |
6584 | else if (strcmp (name, ".mdebug") == 0) | |
6585 | { | |
6586 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 6587 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
6588 | entsize of 0. FIXME: Does this matter? */ |
6589 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
6590 | hdr->sh_entsize = 0; | |
6591 | else | |
6592 | hdr->sh_entsize = 1; | |
6593 | } | |
6594 | else if (strcmp (name, ".reginfo") == 0) | |
6595 | { | |
6596 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 6597 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
6598 | entsize of 0x18. FIXME: Does this matter? */ |
6599 | if (SGI_COMPAT (abfd)) | |
6600 | { | |
6601 | if ((abfd->flags & DYNAMIC) != 0) | |
6602 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6603 | else | |
6604 | hdr->sh_entsize = 1; | |
6605 | } | |
6606 | else | |
6607 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6608 | } | |
6609 | else if (SGI_COMPAT (abfd) | |
6610 | && (strcmp (name, ".hash") == 0 | |
6611 | || strcmp (name, ".dynamic") == 0 | |
6612 | || strcmp (name, ".dynstr") == 0)) | |
6613 | { | |
6614 | if (SGI_COMPAT (abfd)) | |
6615 | hdr->sh_entsize = 0; | |
6616 | #if 0 | |
8dc1a139 | 6617 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6618 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6619 | #endif | |
6620 | } | |
6621 | else if (strcmp (name, ".got") == 0 | |
6622 | || strcmp (name, ".srdata") == 0 | |
6623 | || strcmp (name, ".sdata") == 0 | |
6624 | || strcmp (name, ".sbss") == 0 | |
6625 | || strcmp (name, ".lit4") == 0 | |
6626 | || strcmp (name, ".lit8") == 0) | |
6627 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6628 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6629 | { | |
6630 | hdr->sh_type = SHT_MIPS_IFACE; | |
6631 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6632 | } | |
0112cd26 | 6633 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6634 | { |
6635 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6636 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6637 | /* The sh_info field is set in final_write_processing. */ | |
6638 | } | |
cc2e31b9 | 6639 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6640 | { |
6641 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6642 | hdr->sh_entsize = 1; | |
6643 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6644 | } | |
1b315056 CS |
6645 | else if (CONST_STRNEQ (name, ".debug_") |
6646 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6647 | { |
6648 | hdr->sh_type = SHT_MIPS_DWARF; | |
6649 | ||
6650 | /* Irix facilities such as libexc expect a single .debug_frame | |
6651 | per executable, the system ones have NOSTRIP set and the linker | |
6652 | doesn't merge sections with different flags so ... */ | |
6653 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
6654 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6655 | } | |
b49e97c9 TS |
6656 | else if (strcmp (name, ".MIPS.symlib") == 0) |
6657 | { | |
6658 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
6659 | /* The sh_link and sh_info fields are set in | |
6660 | final_write_processing. */ | |
6661 | } | |
0112cd26 NC |
6662 | else if (CONST_STRNEQ (name, ".MIPS.events") |
6663 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
6664 | { |
6665 | hdr->sh_type = SHT_MIPS_EVENTS; | |
6666 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6667 | /* The sh_link field is set in final_write_processing. */ | |
6668 | } | |
6669 | else if (strcmp (name, ".msym") == 0) | |
6670 | { | |
6671 | hdr->sh_type = SHT_MIPS_MSYM; | |
6672 | hdr->sh_flags |= SHF_ALLOC; | |
6673 | hdr->sh_entsize = 8; | |
6674 | } | |
6675 | ||
7a79a000 TS |
6676 | /* The generic elf_fake_sections will set up REL_HDR using the default |
6677 | kind of relocations. We used to set up a second header for the | |
6678 | non-default kind of relocations here, but only NewABI would use | |
6679 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
6680 | Thus we create those header only on demand now. */ | |
b49e97c9 | 6681 | |
b34976b6 | 6682 | return TRUE; |
b49e97c9 TS |
6683 | } |
6684 | ||
6685 | /* Given a BFD section, try to locate the corresponding ELF section | |
6686 | index. This is used by both the 32-bit and the 64-bit ABI. | |
6687 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
6688 | but for non-PIC objects we will certainly want support for at least | |
6689 | the .scommon section. */ | |
6690 | ||
b34976b6 | 6691 | bfd_boolean |
9719ad41 RS |
6692 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
6693 | asection *sec, int *retval) | |
b49e97c9 TS |
6694 | { |
6695 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
6696 | { | |
6697 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 6698 | return TRUE; |
b49e97c9 TS |
6699 | } |
6700 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
6701 | { | |
6702 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 6703 | return TRUE; |
b49e97c9 | 6704 | } |
b34976b6 | 6705 | return FALSE; |
b49e97c9 TS |
6706 | } |
6707 | \f | |
6708 | /* Hook called by the linker routine which adds symbols from an object | |
6709 | file. We must handle the special MIPS section numbers here. */ | |
6710 | ||
b34976b6 | 6711 | bfd_boolean |
9719ad41 | 6712 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 6713 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
6714 | flagword *flagsp ATTRIBUTE_UNUSED, |
6715 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
6716 | { |
6717 | if (SGI_COMPAT (abfd) | |
6718 | && (abfd->flags & DYNAMIC) != 0 | |
6719 | && strcmp (*namep, "_rld_new_interface") == 0) | |
6720 | { | |
8dc1a139 | 6721 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 6722 | *namep = NULL; |
b34976b6 | 6723 | return TRUE; |
b49e97c9 TS |
6724 | } |
6725 | ||
eedecc07 DD |
6726 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
6727 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
6728 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
6729 | a magic symbol resolved by the linker, we ignore this bogus definition | |
6730 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
6731 | is not done for them. */ | |
6732 | if (!NEWABI_P(abfd) | |
6733 | && (sym->st_shndx == SHN_ABS) | |
6734 | && (strcmp (*namep, "_gp_disp") == 0)) | |
6735 | { | |
6736 | *namep = NULL; | |
6737 | return TRUE; | |
6738 | } | |
6739 | ||
b49e97c9 TS |
6740 | switch (sym->st_shndx) |
6741 | { | |
6742 | case SHN_COMMON: | |
6743 | /* Common symbols less than the GP size are automatically | |
6744 | treated as SHN_MIPS_SCOMMON symbols. */ | |
6745 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 6746 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
6747 | || IRIX_COMPAT (abfd) == ict_irix6) |
6748 | break; | |
6749 | /* Fall through. */ | |
6750 | case SHN_MIPS_SCOMMON: | |
6751 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
6752 | (*secp)->flags |= SEC_IS_COMMON; | |
6753 | *valp = sym->st_size; | |
6754 | break; | |
6755 | ||
6756 | case SHN_MIPS_TEXT: | |
6757 | /* This section is used in a shared object. */ | |
6758 | if (elf_tdata (abfd)->elf_text_section == NULL) | |
6759 | { | |
6760 | asymbol *elf_text_symbol; | |
6761 | asection *elf_text_section; | |
6762 | bfd_size_type amt = sizeof (asection); | |
6763 | ||
6764 | elf_text_section = bfd_zalloc (abfd, amt); | |
6765 | if (elf_text_section == NULL) | |
b34976b6 | 6766 | return FALSE; |
b49e97c9 TS |
6767 | |
6768 | amt = sizeof (asymbol); | |
6769 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
6770 | if (elf_text_symbol == NULL) | |
b34976b6 | 6771 | return FALSE; |
b49e97c9 TS |
6772 | |
6773 | /* Initialize the section. */ | |
6774 | ||
6775 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
6776 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
6777 | ||
6778 | elf_text_section->symbol = elf_text_symbol; | |
6779 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
6780 | ||
6781 | elf_text_section->name = ".text"; | |
6782 | elf_text_section->flags = SEC_NO_FLAGS; | |
6783 | elf_text_section->output_section = NULL; | |
6784 | elf_text_section->owner = abfd; | |
6785 | elf_text_symbol->name = ".text"; | |
6786 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6787 | elf_text_symbol->section = elf_text_section; | |
6788 | } | |
6789 | /* This code used to do *secp = bfd_und_section_ptr if | |
6790 | info->shared. I don't know why, and that doesn't make sense, | |
6791 | so I took it out. */ | |
6792 | *secp = elf_tdata (abfd)->elf_text_section; | |
6793 | break; | |
6794 | ||
6795 | case SHN_MIPS_ACOMMON: | |
6796 | /* Fall through. XXX Can we treat this as allocated data? */ | |
6797 | case SHN_MIPS_DATA: | |
6798 | /* This section is used in a shared object. */ | |
6799 | if (elf_tdata (abfd)->elf_data_section == NULL) | |
6800 | { | |
6801 | asymbol *elf_data_symbol; | |
6802 | asection *elf_data_section; | |
6803 | bfd_size_type amt = sizeof (asection); | |
6804 | ||
6805 | elf_data_section = bfd_zalloc (abfd, amt); | |
6806 | if (elf_data_section == NULL) | |
b34976b6 | 6807 | return FALSE; |
b49e97c9 TS |
6808 | |
6809 | amt = sizeof (asymbol); | |
6810 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
6811 | if (elf_data_symbol == NULL) | |
b34976b6 | 6812 | return FALSE; |
b49e97c9 TS |
6813 | |
6814 | /* Initialize the section. */ | |
6815 | ||
6816 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
6817 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
6818 | ||
6819 | elf_data_section->symbol = elf_data_symbol; | |
6820 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
6821 | ||
6822 | elf_data_section->name = ".data"; | |
6823 | elf_data_section->flags = SEC_NO_FLAGS; | |
6824 | elf_data_section->output_section = NULL; | |
6825 | elf_data_section->owner = abfd; | |
6826 | elf_data_symbol->name = ".data"; | |
6827 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6828 | elf_data_symbol->section = elf_data_section; | |
6829 | } | |
6830 | /* This code used to do *secp = bfd_und_section_ptr if | |
6831 | info->shared. I don't know why, and that doesn't make sense, | |
6832 | so I took it out. */ | |
6833 | *secp = elf_tdata (abfd)->elf_data_section; | |
6834 | break; | |
6835 | ||
6836 | case SHN_MIPS_SUNDEFINED: | |
6837 | *secp = bfd_und_section_ptr; | |
6838 | break; | |
6839 | } | |
6840 | ||
6841 | if (SGI_COMPAT (abfd) | |
6842 | && ! info->shared | |
f13a99db | 6843 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
6844 | && strcmp (*namep, "__rld_obj_head") == 0) |
6845 | { | |
6846 | struct elf_link_hash_entry *h; | |
14a793b2 | 6847 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6848 | |
6849 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 6850 | bh = NULL; |
b49e97c9 | 6851 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 6852 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 6853 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 6854 | return FALSE; |
14a793b2 AM |
6855 | |
6856 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6857 | h->non_elf = 0; |
6858 | h->def_regular = 1; | |
b49e97c9 TS |
6859 | h->type = STT_OBJECT; |
6860 | ||
c152c796 | 6861 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6862 | return FALSE; |
b49e97c9 | 6863 | |
b34976b6 | 6864 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b49e97c9 TS |
6865 | } |
6866 | ||
6867 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
6868 | odd. This will cause something like .word SYM to come up with | |
6869 | the right value when it is loaded into the PC. */ | |
30c09090 | 6870 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
6871 | ++*valp; |
6872 | ||
b34976b6 | 6873 | return TRUE; |
b49e97c9 TS |
6874 | } |
6875 | ||
6876 | /* This hook function is called before the linker writes out a global | |
6877 | symbol. We mark symbols as small common if appropriate. This is | |
6878 | also where we undo the increment of the value for a mips16 symbol. */ | |
6879 | ||
6e0b88f1 | 6880 | int |
9719ad41 RS |
6881 | _bfd_mips_elf_link_output_symbol_hook |
6882 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
6883 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
6884 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
6885 | { |
6886 | /* If we see a common symbol, which implies a relocatable link, then | |
6887 | if a symbol was small common in an input file, mark it as small | |
6888 | common in the output file. */ | |
6889 | if (sym->st_shndx == SHN_COMMON | |
6890 | && strcmp (input_sec->name, ".scommon") == 0) | |
6891 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
6892 | ||
30c09090 | 6893 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
79cda7cf | 6894 | sym->st_value &= ~1; |
b49e97c9 | 6895 | |
6e0b88f1 | 6896 | return 1; |
b49e97c9 TS |
6897 | } |
6898 | \f | |
6899 | /* Functions for the dynamic linker. */ | |
6900 | ||
6901 | /* Create dynamic sections when linking against a dynamic object. */ | |
6902 | ||
b34976b6 | 6903 | bfd_boolean |
9719ad41 | 6904 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
6905 | { |
6906 | struct elf_link_hash_entry *h; | |
14a793b2 | 6907 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6908 | flagword flags; |
6909 | register asection *s; | |
6910 | const char * const *namep; | |
0a44bf69 | 6911 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6912 | |
0a44bf69 | 6913 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6914 | BFD_ASSERT (htab != NULL); |
6915 | ||
b49e97c9 TS |
6916 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
6917 | | SEC_LINKER_CREATED | SEC_READONLY); | |
6918 | ||
0a44bf69 RS |
6919 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
6920 | EABI doesn't. */ | |
6921 | if (!htab->is_vxworks) | |
b49e97c9 | 6922 | { |
0a44bf69 RS |
6923 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
6924 | if (s != NULL) | |
6925 | { | |
6926 | if (! bfd_set_section_flags (abfd, s, flags)) | |
6927 | return FALSE; | |
6928 | } | |
b49e97c9 TS |
6929 | } |
6930 | ||
6931 | /* We need to create .got section. */ | |
23cc69b6 | 6932 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
6933 | return FALSE; |
6934 | ||
0a44bf69 | 6935 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 6936 | return FALSE; |
b49e97c9 | 6937 | |
b49e97c9 | 6938 | /* Create .stub section. */ |
4e41d0d7 RS |
6939 | s = bfd_make_section_with_flags (abfd, |
6940 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
6941 | flags | SEC_CODE); | |
6942 | if (s == NULL | |
6943 | || ! bfd_set_section_alignment (abfd, s, | |
6944 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
6945 | return FALSE; | |
6946 | htab->sstubs = s; | |
b49e97c9 TS |
6947 | |
6948 | if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none) | |
6949 | && !info->shared | |
6950 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
6951 | { | |
3496cb2a L |
6952 | s = bfd_make_section_with_flags (abfd, ".rld_map", |
6953 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 6954 | if (s == NULL |
b49e97c9 TS |
6955 | || ! bfd_set_section_alignment (abfd, s, |
6956 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 6957 | return FALSE; |
b49e97c9 TS |
6958 | } |
6959 | ||
6960 | /* On IRIX5, we adjust add some additional symbols and change the | |
6961 | alignments of several sections. There is no ABI documentation | |
6962 | indicating that this is necessary on IRIX6, nor any evidence that | |
6963 | the linker takes such action. */ | |
6964 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
6965 | { | |
6966 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
6967 | { | |
14a793b2 | 6968 | bh = NULL; |
b49e97c9 | 6969 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
6970 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
6971 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 6972 | return FALSE; |
14a793b2 AM |
6973 | |
6974 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6975 | h->non_elf = 0; |
6976 | h->def_regular = 1; | |
b49e97c9 TS |
6977 | h->type = STT_SECTION; |
6978 | ||
c152c796 | 6979 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6980 | return FALSE; |
b49e97c9 TS |
6981 | } |
6982 | ||
6983 | /* We need to create a .compact_rel section. */ | |
6984 | if (SGI_COMPAT (abfd)) | |
6985 | { | |
6986 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 6987 | return FALSE; |
b49e97c9 TS |
6988 | } |
6989 | ||
44c410de | 6990 | /* Change alignments of some sections. */ |
b49e97c9 TS |
6991 | s = bfd_get_section_by_name (abfd, ".hash"); |
6992 | if (s != NULL) | |
d80dcc6a | 6993 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6994 | s = bfd_get_section_by_name (abfd, ".dynsym"); |
6995 | if (s != NULL) | |
d80dcc6a | 6996 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6997 | s = bfd_get_section_by_name (abfd, ".dynstr"); |
6998 | if (s != NULL) | |
d80dcc6a | 6999 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7000 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7001 | if (s != NULL) | |
d80dcc6a | 7002 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7003 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
7004 | if (s != NULL) | |
d80dcc6a | 7005 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7006 | } |
7007 | ||
7008 | if (!info->shared) | |
7009 | { | |
14a793b2 AM |
7010 | const char *name; |
7011 | ||
7012 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
7013 | bh = NULL; | |
7014 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
7015 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
7016 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7017 | return FALSE; |
14a793b2 AM |
7018 | |
7019 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7020 | h->non_elf = 0; |
7021 | h->def_regular = 1; | |
b49e97c9 TS |
7022 | h->type = STT_SECTION; |
7023 | ||
c152c796 | 7024 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7025 | return FALSE; |
b49e97c9 TS |
7026 | |
7027 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7028 | { | |
7029 | /* __rld_map is a four byte word located in the .data section | |
7030 | and is filled in by the rtld to contain a pointer to | |
7031 | the _r_debug structure. Its symbol value will be set in | |
7032 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
7033 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
0abfb97a | 7034 | BFD_ASSERT (s != NULL); |
14a793b2 | 7035 | |
0abfb97a L |
7036 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
7037 | bh = NULL; | |
7038 | if (!(_bfd_generic_link_add_one_symbol | |
7039 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
7040 | get_elf_backend_data (abfd)->collect, &bh))) | |
7041 | return FALSE; | |
b49e97c9 | 7042 | |
0abfb97a L |
7043 | h = (struct elf_link_hash_entry *) bh; |
7044 | h->non_elf = 0; | |
7045 | h->def_regular = 1; | |
7046 | h->type = STT_OBJECT; | |
7047 | ||
7048 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7049 | return FALSE; | |
b49e97c9 TS |
7050 | } |
7051 | } | |
7052 | ||
861fb55a DJ |
7053 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
7054 | Also create the _PROCEDURE_LINKAGE_TABLE symbol. */ | |
7055 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) | |
7056 | return FALSE; | |
7057 | ||
7058 | /* Cache the sections created above. */ | |
7059 | htab->splt = bfd_get_section_by_name (abfd, ".plt"); | |
7060 | htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); | |
0a44bf69 RS |
7061 | if (htab->is_vxworks) |
7062 | { | |
0a44bf69 RS |
7063 | htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); |
7064 | htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
861fb55a DJ |
7065 | } |
7066 | else | |
7067 | htab->srelplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
7068 | if (!htab->sdynbss | |
7069 | || (htab->is_vxworks && !htab->srelbss && !info->shared) | |
7070 | || !htab->srelplt | |
7071 | || !htab->splt) | |
7072 | abort (); | |
0a44bf69 | 7073 | |
861fb55a DJ |
7074 | if (htab->is_vxworks) |
7075 | { | |
0a44bf69 RS |
7076 | /* Do the usual VxWorks handling. */ |
7077 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
7078 | return FALSE; | |
7079 | ||
7080 | /* Work out the PLT sizes. */ | |
7081 | if (info->shared) | |
7082 | { | |
7083 | htab->plt_header_size | |
7084 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
7085 | htab->plt_entry_size | |
7086 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
7087 | } | |
7088 | else | |
7089 | { | |
7090 | htab->plt_header_size | |
7091 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
7092 | htab->plt_entry_size | |
7093 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
7094 | } | |
7095 | } | |
861fb55a DJ |
7096 | else if (!info->shared) |
7097 | { | |
7098 | /* All variants of the plt0 entry are the same size. */ | |
7099 | htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
7100 | htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
7101 | } | |
0a44bf69 | 7102 | |
b34976b6 | 7103 | return TRUE; |
b49e97c9 TS |
7104 | } |
7105 | \f | |
c224138d RS |
7106 | /* Return true if relocation REL against section SEC is a REL rather than |
7107 | RELA relocation. RELOCS is the first relocation in the section and | |
7108 | ABFD is the bfd that contains SEC. */ | |
7109 | ||
7110 | static bfd_boolean | |
7111 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7112 | const Elf_Internal_Rela *relocs, | |
7113 | const Elf_Internal_Rela *rel) | |
7114 | { | |
7115 | Elf_Internal_Shdr *rel_hdr; | |
7116 | const struct elf_backend_data *bed; | |
7117 | ||
7118 | /* To determine which flavor or relocation this is, we depend on the | |
7119 | fact that the INPUT_SECTION's REL_HDR is read before its REL_HDR2. */ | |
7120 | rel_hdr = &elf_section_data (sec)->rel_hdr; | |
7121 | bed = get_elf_backend_data (abfd); | |
7122 | if ((size_t) (rel - relocs) | |
7123 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) | |
7124 | rel_hdr = elf_section_data (sec)->rel_hdr2; | |
7125 | return rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (abfd); | |
7126 | } | |
7127 | ||
7128 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7129 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7130 | of the section that REL is against. */ | |
7131 | ||
7132 | static bfd_vma | |
7133 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7134 | reloc_howto_type *howto, bfd_byte *contents) | |
7135 | { | |
7136 | bfd_byte *location; | |
7137 | unsigned int r_type; | |
7138 | bfd_vma addend; | |
7139 | ||
7140 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7141 | location = contents + rel->r_offset; | |
7142 | ||
7143 | /* Get the addend, which is stored in the input file. */ | |
7144 | _bfd_mips16_elf_reloc_unshuffle (abfd, r_type, FALSE, location); | |
7145 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); | |
7146 | _bfd_mips16_elf_reloc_shuffle (abfd, r_type, FALSE, location); | |
7147 | ||
7148 | return addend & howto->src_mask; | |
7149 | } | |
7150 | ||
7151 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7152 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7153 | and update *ADDEND with the final addend. Return true on success | |
7154 | or false if the LO16 could not be found. RELEND is the exclusive | |
7155 | upper bound on the relocations for REL's section. */ | |
7156 | ||
7157 | static bfd_boolean | |
7158 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
7159 | const Elf_Internal_Rela *rel, | |
7160 | const Elf_Internal_Rela *relend, | |
7161 | bfd_byte *contents, bfd_vma *addend) | |
7162 | { | |
7163 | unsigned int r_type, lo16_type; | |
7164 | const Elf_Internal_Rela *lo16_relocation; | |
7165 | reloc_howto_type *lo16_howto; | |
7166 | bfd_vma l; | |
7167 | ||
7168 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 7169 | if (mips16_reloc_p (r_type)) |
c224138d RS |
7170 | lo16_type = R_MIPS16_LO16; |
7171 | else | |
7172 | lo16_type = R_MIPS_LO16; | |
7173 | ||
7174 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
7175 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
7176 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
7177 | LO16 value.) | |
7178 | ||
7179 | Scan ahead to find a matching LO16 relocation. | |
7180 | ||
7181 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
7182 | be immediately following. However, for the IRIX6 ABI, the next | |
7183 | relocation may be a composed relocation consisting of several | |
7184 | relocations for the same address. In that case, the R_MIPS_LO16 | |
7185 | relocation may occur as one of these. We permit a similar | |
7186 | extension in general, as that is useful for GCC. | |
7187 | ||
7188 | In some cases GCC dead code elimination removes the LO16 but keeps | |
7189 | the corresponding HI16. This is strictly speaking a violation of | |
7190 | the ABI but not immediately harmful. */ | |
7191 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
7192 | if (lo16_relocation == NULL) | |
7193 | return FALSE; | |
7194 | ||
7195 | /* Obtain the addend kept there. */ | |
7196 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
7197 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
7198 | ||
7199 | l <<= lo16_howto->rightshift; | |
7200 | l = _bfd_mips_elf_sign_extend (l, 16); | |
7201 | ||
7202 | *addend <<= 16; | |
7203 | *addend += l; | |
7204 | return TRUE; | |
7205 | } | |
7206 | ||
7207 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
7208 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
7209 | already holds the contents if it is nonull on entry. */ | |
7210 | ||
7211 | static bfd_boolean | |
7212 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
7213 | { | |
7214 | if (*contents) | |
7215 | return TRUE; | |
7216 | ||
7217 | /* Get cached copy if it exists. */ | |
7218 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7219 | { | |
7220 | *contents = elf_section_data (sec)->this_hdr.contents; | |
7221 | return TRUE; | |
7222 | } | |
7223 | ||
7224 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
7225 | } | |
7226 | ||
b49e97c9 TS |
7227 | /* Look through the relocs for a section during the first phase, and |
7228 | allocate space in the global offset table. */ | |
7229 | ||
b34976b6 | 7230 | bfd_boolean |
9719ad41 RS |
7231 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7232 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
7233 | { |
7234 | const char *name; | |
7235 | bfd *dynobj; | |
7236 | Elf_Internal_Shdr *symtab_hdr; | |
7237 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
7238 | size_t extsymoff; |
7239 | const Elf_Internal_Rela *rel; | |
7240 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 7241 | asection *sreloc; |
9c5bfbb7 | 7242 | const struct elf_backend_data *bed; |
0a44bf69 | 7243 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
7244 | bfd_byte *contents; |
7245 | bfd_vma addend; | |
7246 | reloc_howto_type *howto; | |
b49e97c9 | 7247 | |
1049f94e | 7248 | if (info->relocatable) |
b34976b6 | 7249 | return TRUE; |
b49e97c9 | 7250 | |
0a44bf69 | 7251 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7252 | BFD_ASSERT (htab != NULL); |
7253 | ||
b49e97c9 TS |
7254 | dynobj = elf_hash_table (info)->dynobj; |
7255 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7256 | sym_hashes = elf_sym_hashes (abfd); | |
7257 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7258 | ||
738e5348 RS |
7259 | bed = get_elf_backend_data (abfd); |
7260 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
7261 | ||
b49e97c9 TS |
7262 | /* Check for the mips16 stub sections. */ |
7263 | ||
7264 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 7265 | if (FN_STUB_P (name)) |
b49e97c9 TS |
7266 | { |
7267 | unsigned long r_symndx; | |
7268 | ||
7269 | /* Look at the relocation information to figure out which symbol | |
7270 | this is for. */ | |
7271 | ||
738e5348 RS |
7272 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
7273 | if (r_symndx == 0) | |
7274 | { | |
7275 | (*_bfd_error_handler) | |
7276 | (_("%B: Warning: cannot determine the target function for" | |
7277 | " stub section `%s'"), | |
7278 | abfd, name); | |
7279 | bfd_set_error (bfd_error_bad_value); | |
7280 | return FALSE; | |
7281 | } | |
b49e97c9 TS |
7282 | |
7283 | if (r_symndx < extsymoff | |
7284 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7285 | { | |
7286 | asection *o; | |
7287 | ||
7288 | /* This stub is for a local symbol. This stub will only be | |
7289 | needed if there is some relocation in this BFD, other | |
7290 | than a 16 bit function call, which refers to this symbol. */ | |
7291 | for (o = abfd->sections; o != NULL; o = o->next) | |
7292 | { | |
7293 | Elf_Internal_Rela *sec_relocs; | |
7294 | const Elf_Internal_Rela *r, *rend; | |
7295 | ||
7296 | /* We can ignore stub sections when looking for relocs. */ | |
7297 | if ((o->flags & SEC_RELOC) == 0 | |
7298 | || o->reloc_count == 0 | |
738e5348 | 7299 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
7300 | continue; |
7301 | ||
45d6a902 | 7302 | sec_relocs |
9719ad41 | 7303 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 7304 | info->keep_memory); |
b49e97c9 | 7305 | if (sec_relocs == NULL) |
b34976b6 | 7306 | return FALSE; |
b49e97c9 TS |
7307 | |
7308 | rend = sec_relocs + o->reloc_count; | |
7309 | for (r = sec_relocs; r < rend; r++) | |
7310 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 7311 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
7312 | break; |
7313 | ||
6cdc0ccc | 7314 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
7315 | free (sec_relocs); |
7316 | ||
7317 | if (r < rend) | |
7318 | break; | |
7319 | } | |
7320 | ||
7321 | if (o == NULL) | |
7322 | { | |
7323 | /* There is no non-call reloc for this stub, so we do | |
7324 | not need it. Since this function is called before | |
7325 | the linker maps input sections to output sections, we | |
7326 | can easily discard it by setting the SEC_EXCLUDE | |
7327 | flag. */ | |
7328 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 7329 | return TRUE; |
b49e97c9 TS |
7330 | } |
7331 | ||
7332 | /* Record this stub in an array of local symbol stubs for | |
7333 | this BFD. */ | |
7334 | if (elf_tdata (abfd)->local_stubs == NULL) | |
7335 | { | |
7336 | unsigned long symcount; | |
7337 | asection **n; | |
7338 | bfd_size_type amt; | |
7339 | ||
7340 | if (elf_bad_symtab (abfd)) | |
7341 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7342 | else | |
7343 | symcount = symtab_hdr->sh_info; | |
7344 | amt = symcount * sizeof (asection *); | |
9719ad41 | 7345 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 7346 | if (n == NULL) |
b34976b6 | 7347 | return FALSE; |
b49e97c9 TS |
7348 | elf_tdata (abfd)->local_stubs = n; |
7349 | } | |
7350 | ||
b9d58d71 | 7351 | sec->flags |= SEC_KEEP; |
b49e97c9 TS |
7352 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
7353 | ||
7354 | /* We don't need to set mips16_stubs_seen in this case. | |
7355 | That flag is used to see whether we need to look through | |
7356 | the global symbol table for stubs. We don't need to set | |
7357 | it here, because we just have a local stub. */ | |
7358 | } | |
7359 | else | |
7360 | { | |
7361 | struct mips_elf_link_hash_entry *h; | |
7362 | ||
7363 | h = ((struct mips_elf_link_hash_entry *) | |
7364 | sym_hashes[r_symndx - extsymoff]); | |
7365 | ||
973a3492 L |
7366 | while (h->root.root.type == bfd_link_hash_indirect |
7367 | || h->root.root.type == bfd_link_hash_warning) | |
7368 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
7369 | ||
b49e97c9 TS |
7370 | /* H is the symbol this stub is for. */ |
7371 | ||
b9d58d71 TS |
7372 | /* If we already have an appropriate stub for this function, we |
7373 | don't need another one, so we can discard this one. Since | |
7374 | this function is called before the linker maps input sections | |
7375 | to output sections, we can easily discard it by setting the | |
7376 | SEC_EXCLUDE flag. */ | |
7377 | if (h->fn_stub != NULL) | |
7378 | { | |
7379 | sec->flags |= SEC_EXCLUDE; | |
7380 | return TRUE; | |
7381 | } | |
7382 | ||
7383 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 7384 | h->fn_stub = sec; |
b34976b6 | 7385 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
7386 | } |
7387 | } | |
b9d58d71 | 7388 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
7389 | { |
7390 | unsigned long r_symndx; | |
7391 | struct mips_elf_link_hash_entry *h; | |
7392 | asection **loc; | |
7393 | ||
7394 | /* Look at the relocation information to figure out which symbol | |
7395 | this is for. */ | |
7396 | ||
738e5348 RS |
7397 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
7398 | if (r_symndx == 0) | |
7399 | { | |
7400 | (*_bfd_error_handler) | |
7401 | (_("%B: Warning: cannot determine the target function for" | |
7402 | " stub section `%s'"), | |
7403 | abfd, name); | |
7404 | bfd_set_error (bfd_error_bad_value); | |
7405 | return FALSE; | |
7406 | } | |
b49e97c9 TS |
7407 | |
7408 | if (r_symndx < extsymoff | |
7409 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7410 | { | |
b9d58d71 | 7411 | asection *o; |
b49e97c9 | 7412 | |
b9d58d71 TS |
7413 | /* This stub is for a local symbol. This stub will only be |
7414 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
7415 | that refers to this symbol. */ | |
7416 | for (o = abfd->sections; o != NULL; o = o->next) | |
7417 | { | |
7418 | Elf_Internal_Rela *sec_relocs; | |
7419 | const Elf_Internal_Rela *r, *rend; | |
7420 | ||
7421 | /* We can ignore stub sections when looking for relocs. */ | |
7422 | if ((o->flags & SEC_RELOC) == 0 | |
7423 | || o->reloc_count == 0 | |
738e5348 | 7424 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
7425 | continue; |
7426 | ||
7427 | sec_relocs | |
7428 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
7429 | info->keep_memory); | |
7430 | if (sec_relocs == NULL) | |
7431 | return FALSE; | |
7432 | ||
7433 | rend = sec_relocs + o->reloc_count; | |
7434 | for (r = sec_relocs; r < rend; r++) | |
7435 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
7436 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
7437 | break; | |
7438 | ||
7439 | if (elf_section_data (o)->relocs != sec_relocs) | |
7440 | free (sec_relocs); | |
7441 | ||
7442 | if (r < rend) | |
7443 | break; | |
7444 | } | |
7445 | ||
7446 | if (o == NULL) | |
7447 | { | |
7448 | /* There is no non-call reloc for this stub, so we do | |
7449 | not need it. Since this function is called before | |
7450 | the linker maps input sections to output sections, we | |
7451 | can easily discard it by setting the SEC_EXCLUDE | |
7452 | flag. */ | |
7453 | sec->flags |= SEC_EXCLUDE; | |
7454 | return TRUE; | |
7455 | } | |
7456 | ||
7457 | /* Record this stub in an array of local symbol call_stubs for | |
7458 | this BFD. */ | |
7459 | if (elf_tdata (abfd)->local_call_stubs == NULL) | |
7460 | { | |
7461 | unsigned long symcount; | |
7462 | asection **n; | |
7463 | bfd_size_type amt; | |
7464 | ||
7465 | if (elf_bad_symtab (abfd)) | |
7466 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7467 | else | |
7468 | symcount = symtab_hdr->sh_info; | |
7469 | amt = symcount * sizeof (asection *); | |
7470 | n = bfd_zalloc (abfd, amt); | |
7471 | if (n == NULL) | |
7472 | return FALSE; | |
7473 | elf_tdata (abfd)->local_call_stubs = n; | |
7474 | } | |
b49e97c9 | 7475 | |
b9d58d71 TS |
7476 | sec->flags |= SEC_KEEP; |
7477 | elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; | |
b49e97c9 | 7478 | |
b9d58d71 TS |
7479 | /* We don't need to set mips16_stubs_seen in this case. |
7480 | That flag is used to see whether we need to look through | |
7481 | the global symbol table for stubs. We don't need to set | |
7482 | it here, because we just have a local stub. */ | |
7483 | } | |
b49e97c9 | 7484 | else |
b49e97c9 | 7485 | { |
b9d58d71 TS |
7486 | h = ((struct mips_elf_link_hash_entry *) |
7487 | sym_hashes[r_symndx - extsymoff]); | |
7488 | ||
7489 | /* H is the symbol this stub is for. */ | |
7490 | ||
7491 | if (CALL_FP_STUB_P (name)) | |
7492 | loc = &h->call_fp_stub; | |
7493 | else | |
7494 | loc = &h->call_stub; | |
7495 | ||
7496 | /* If we already have an appropriate stub for this function, we | |
7497 | don't need another one, so we can discard this one. Since | |
7498 | this function is called before the linker maps input sections | |
7499 | to output sections, we can easily discard it by setting the | |
7500 | SEC_EXCLUDE flag. */ | |
7501 | if (*loc != NULL) | |
7502 | { | |
7503 | sec->flags |= SEC_EXCLUDE; | |
7504 | return TRUE; | |
7505 | } | |
b49e97c9 | 7506 | |
b9d58d71 TS |
7507 | sec->flags |= SEC_KEEP; |
7508 | *loc = sec; | |
7509 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
7510 | } | |
b49e97c9 TS |
7511 | } |
7512 | ||
b49e97c9 | 7513 | sreloc = NULL; |
c224138d | 7514 | contents = NULL; |
b49e97c9 TS |
7515 | for (rel = relocs; rel < rel_end; ++rel) |
7516 | { | |
7517 | unsigned long r_symndx; | |
7518 | unsigned int r_type; | |
7519 | struct elf_link_hash_entry *h; | |
861fb55a | 7520 | bfd_boolean can_make_dynamic_p; |
b49e97c9 TS |
7521 | |
7522 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
7523 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7524 | ||
7525 | if (r_symndx < extsymoff) | |
7526 | h = NULL; | |
7527 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
7528 | { | |
7529 | (*_bfd_error_handler) | |
d003868e AM |
7530 | (_("%B: Malformed reloc detected for section %s"), |
7531 | abfd, name); | |
b49e97c9 | 7532 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7533 | return FALSE; |
b49e97c9 TS |
7534 | } |
7535 | else | |
7536 | { | |
7537 | h = sym_hashes[r_symndx - extsymoff]; | |
3e08fb72 NC |
7538 | while (h != NULL |
7539 | && (h->root.type == bfd_link_hash_indirect | |
7540 | || h->root.type == bfd_link_hash_warning)) | |
861fb55a DJ |
7541 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
7542 | } | |
b49e97c9 | 7543 | |
861fb55a DJ |
7544 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
7545 | relocation into a dynamic one. */ | |
7546 | can_make_dynamic_p = FALSE; | |
7547 | switch (r_type) | |
7548 | { | |
7549 | case R_MIPS16_GOT16: | |
7550 | case R_MIPS16_CALL16: | |
7551 | case R_MIPS_GOT16: | |
7552 | case R_MIPS_CALL16: | |
7553 | case R_MIPS_CALL_HI16: | |
7554 | case R_MIPS_CALL_LO16: | |
7555 | case R_MIPS_GOT_HI16: | |
7556 | case R_MIPS_GOT_LO16: | |
7557 | case R_MIPS_GOT_PAGE: | |
7558 | case R_MIPS_GOT_OFST: | |
7559 | case R_MIPS_GOT_DISP: | |
7560 | case R_MIPS_TLS_GOTTPREL: | |
7561 | case R_MIPS_TLS_GD: | |
7562 | case R_MIPS_TLS_LDM: | |
7563 | if (dynobj == NULL) | |
7564 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7565 | if (!mips_elf_create_got_section (dynobj, info)) | |
7566 | return FALSE; | |
7567 | if (htab->is_vxworks && !info->shared) | |
b49e97c9 | 7568 | { |
861fb55a DJ |
7569 | (*_bfd_error_handler) |
7570 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
7571 | abfd, (unsigned long) rel->r_offset); | |
7572 | bfd_set_error (bfd_error_bad_value); | |
7573 | return FALSE; | |
b49e97c9 | 7574 | } |
861fb55a | 7575 | break; |
b49e97c9 | 7576 | |
99da6b5f AN |
7577 | /* This is just a hint; it can safely be ignored. Don't set |
7578 | has_static_relocs for the corresponding symbol. */ | |
7579 | case R_MIPS_JALR: | |
7580 | break; | |
7581 | ||
861fb55a DJ |
7582 | case R_MIPS_32: |
7583 | case R_MIPS_REL32: | |
7584 | case R_MIPS_64: | |
7585 | /* In VxWorks executables, references to external symbols | |
7586 | must be handled using copy relocs or PLT entries; it is not | |
7587 | possible to convert this relocation into a dynamic one. | |
7588 | ||
7589 | For executables that use PLTs and copy-relocs, we have a | |
7590 | choice between converting the relocation into a dynamic | |
7591 | one or using copy relocations or PLT entries. It is | |
7592 | usually better to do the former, unless the relocation is | |
7593 | against a read-only section. */ | |
7594 | if ((info->shared | |
7595 | || (h != NULL | |
7596 | && !htab->is_vxworks | |
7597 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
7598 | && !(!info->nocopyreloc | |
7599 | && !PIC_OBJECT_P (abfd) | |
7600 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
7601 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 7602 | { |
861fb55a | 7603 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
7604 | if (dynobj == NULL) |
7605 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
b49e97c9 | 7606 | break; |
861fb55a DJ |
7607 | } |
7608 | /* Fall through. */ | |
b49e97c9 | 7609 | |
861fb55a DJ |
7610 | default: |
7611 | /* Most static relocations require pointer equality, except | |
7612 | for branches. */ | |
7613 | if (h) | |
7614 | h->pointer_equality_needed = TRUE; | |
7615 | /* Fall through. */ | |
b49e97c9 | 7616 | |
861fb55a DJ |
7617 | case R_MIPS_26: |
7618 | case R_MIPS_PC16: | |
7619 | case R_MIPS16_26: | |
7620 | if (h) | |
7621 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE; | |
7622 | break; | |
b49e97c9 TS |
7623 | } |
7624 | ||
0a44bf69 RS |
7625 | if (h) |
7626 | { | |
0a44bf69 RS |
7627 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
7628 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
7629 | room for them in .rela.dyn. */ | |
7630 | if (is_gott_symbol (info, h)) | |
7631 | { | |
7632 | if (sreloc == NULL) | |
7633 | { | |
7634 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
7635 | if (sreloc == NULL) | |
7636 | return FALSE; | |
7637 | } | |
7638 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
7639 | if (MIPS_ELF_READONLY_SECTION (sec)) |
7640 | /* We tell the dynamic linker that there are | |
7641 | relocations against the text segment. */ | |
7642 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
7643 | } |
7644 | } | |
7645 | else if (r_type == R_MIPS_CALL_LO16 | |
7646 | || r_type == R_MIPS_GOT_LO16 | |
7647 | || r_type == R_MIPS_GOT_DISP | |
738e5348 | 7648 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
7649 | { |
7650 | /* We may need a local GOT entry for this relocation. We | |
7651 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
7652 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
7653 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
7654 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 7655 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 7656 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 7657 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 RS |
7658 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
7659 | rel->r_addend, info, 0)) | |
f4416af6 | 7660 | return FALSE; |
b49e97c9 TS |
7661 | } |
7662 | ||
861fb55a DJ |
7663 | if (h != NULL && mips_elf_relocation_needs_la25_stub (abfd, r_type)) |
7664 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; | |
7665 | ||
b49e97c9 TS |
7666 | switch (r_type) |
7667 | { | |
7668 | case R_MIPS_CALL16: | |
738e5348 | 7669 | case R_MIPS16_CALL16: |
b49e97c9 TS |
7670 | if (h == NULL) |
7671 | { | |
7672 | (*_bfd_error_handler) | |
d003868e AM |
7673 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
7674 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 7675 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7676 | return FALSE; |
b49e97c9 TS |
7677 | } |
7678 | /* Fall through. */ | |
7679 | ||
7680 | case R_MIPS_CALL_HI16: | |
7681 | case R_MIPS_CALL_LO16: | |
7682 | if (h != NULL) | |
7683 | { | |
d334575b | 7684 | /* VxWorks call relocations point at the function's .got.plt |
0a44bf69 RS |
7685 | entry, which will be allocated by adjust_dynamic_symbol. |
7686 | Otherwise, this symbol requires a global GOT entry. */ | |
8275b357 | 7687 | if ((!htab->is_vxworks || h->forced_local) |
a8028dd0 | 7688 | && !mips_elf_record_global_got_symbol (h, abfd, info, 0)) |
b34976b6 | 7689 | return FALSE; |
b49e97c9 TS |
7690 | |
7691 | /* We need a stub, not a plt entry for the undefined | |
7692 | function. But we record it as if it needs plt. See | |
c152c796 | 7693 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 7694 | h->needs_plt = 1; |
b49e97c9 TS |
7695 | h->type = STT_FUNC; |
7696 | } | |
7697 | break; | |
7698 | ||
0fdc1bf1 AO |
7699 | case R_MIPS_GOT_PAGE: |
7700 | /* If this is a global, overridable symbol, GOT_PAGE will | |
7701 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d | 7702 | if (h) |
0fdc1bf1 AO |
7703 | { |
7704 | struct mips_elf_link_hash_entry *hmips = | |
7705 | (struct mips_elf_link_hash_entry *) h; | |
143d77c5 | 7706 | |
3a3b6725 | 7707 | /* This symbol is definitely not overridable. */ |
f5385ebf | 7708 | if (hmips->root.def_regular |
0fdc1bf1 | 7709 | && ! (info->shared && ! info->symbolic |
f5385ebf | 7710 | && ! hmips->root.forced_local)) |
c224138d | 7711 | h = NULL; |
0fdc1bf1 AO |
7712 | } |
7713 | /* Fall through. */ | |
7714 | ||
738e5348 | 7715 | case R_MIPS16_GOT16: |
b49e97c9 TS |
7716 | case R_MIPS_GOT16: |
7717 | case R_MIPS_GOT_HI16: | |
7718 | case R_MIPS_GOT_LO16: | |
3a3b6725 | 7719 | if (!h || r_type == R_MIPS_GOT_PAGE) |
c224138d | 7720 | { |
3a3b6725 DJ |
7721 | /* This relocation needs (or may need, if h != NULL) a |
7722 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
7723 | know for sure until we know whether the symbol is | |
7724 | preemptible. */ | |
c224138d RS |
7725 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
7726 | { | |
7727 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
7728 | return FALSE; | |
7729 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
7730 | addend = mips_elf_read_rel_addend (abfd, rel, | |
7731 | howto, contents); | |
7732 | if (r_type == R_MIPS_GOT16) | |
7733 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, | |
7734 | contents, &addend); | |
7735 | else | |
7736 | addend <<= howto->rightshift; | |
7737 | } | |
7738 | else | |
7739 | addend = rel->r_addend; | |
a8028dd0 RS |
7740 | if (!mips_elf_record_got_page_entry (info, abfd, r_symndx, |
7741 | addend)) | |
c224138d RS |
7742 | return FALSE; |
7743 | break; | |
7744 | } | |
7745 | /* Fall through. */ | |
7746 | ||
b49e97c9 | 7747 | case R_MIPS_GOT_DISP: |
a8028dd0 | 7748 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, 0)) |
b34976b6 | 7749 | return FALSE; |
b49e97c9 TS |
7750 | break; |
7751 | ||
0f20cc35 DJ |
7752 | case R_MIPS_TLS_GOTTPREL: |
7753 | if (info->shared) | |
7754 | info->flags |= DF_STATIC_TLS; | |
7755 | /* Fall through */ | |
7756 | ||
7757 | case R_MIPS_TLS_LDM: | |
7758 | if (r_type == R_MIPS_TLS_LDM) | |
7759 | { | |
7760 | r_symndx = 0; | |
7761 | h = NULL; | |
7762 | } | |
7763 | /* Fall through */ | |
7764 | ||
7765 | case R_MIPS_TLS_GD: | |
7766 | /* This symbol requires a global offset table entry, or two | |
7767 | for TLS GD relocations. */ | |
7768 | { | |
7769 | unsigned char flag = (r_type == R_MIPS_TLS_GD | |
7770 | ? GOT_TLS_GD | |
7771 | : r_type == R_MIPS_TLS_LDM | |
7772 | ? GOT_TLS_LDM | |
7773 | : GOT_TLS_IE); | |
7774 | if (h != NULL) | |
7775 | { | |
7776 | struct mips_elf_link_hash_entry *hmips = | |
7777 | (struct mips_elf_link_hash_entry *) h; | |
7778 | hmips->tls_type |= flag; | |
7779 | ||
a8028dd0 RS |
7780 | if (h && !mips_elf_record_global_got_symbol (h, abfd, |
7781 | info, flag)) | |
0f20cc35 DJ |
7782 | return FALSE; |
7783 | } | |
7784 | else | |
7785 | { | |
7786 | BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != 0); | |
7787 | ||
a8028dd0 RS |
7788 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
7789 | rel->r_addend, | |
7790 | info, flag)) | |
0f20cc35 DJ |
7791 | return FALSE; |
7792 | } | |
7793 | } | |
7794 | break; | |
7795 | ||
b49e97c9 TS |
7796 | case R_MIPS_32: |
7797 | case R_MIPS_REL32: | |
7798 | case R_MIPS_64: | |
0a44bf69 RS |
7799 | /* In VxWorks executables, references to external symbols |
7800 | are handled using copy relocs or PLT stubs, so there's | |
7801 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 7802 | if (can_make_dynamic_p) |
b49e97c9 TS |
7803 | { |
7804 | if (sreloc == NULL) | |
7805 | { | |
0a44bf69 | 7806 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 7807 | if (sreloc == NULL) |
f4416af6 | 7808 | return FALSE; |
b49e97c9 | 7809 | } |
9a59ad6b | 7810 | if (info->shared && h == NULL) |
82f0cfbd EC |
7811 | { |
7812 | /* When creating a shared object, we must copy these | |
7813 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
7814 | relocs. Make room for this reloc in .rel(a).dyn. */ |
7815 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 7816 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7817 | /* We tell the dynamic linker that there are |
7818 | relocations against the text segment. */ | |
7819 | info->flags |= DF_TEXTREL; | |
7820 | } | |
b49e97c9 TS |
7821 | else |
7822 | { | |
7823 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 7824 | |
9a59ad6b DJ |
7825 | /* For a shared object, we must copy this relocation |
7826 | unless the symbol turns out to be undefined and | |
7827 | weak with non-default visibility, in which case | |
7828 | it will be left as zero. | |
7829 | ||
7830 | We could elide R_MIPS_REL32 for locally binding symbols | |
7831 | in shared libraries, but do not yet do so. | |
7832 | ||
7833 | For an executable, we only need to copy this | |
7834 | reloc if the symbol is defined in a dynamic | |
7835 | object. */ | |
b49e97c9 TS |
7836 | hmips = (struct mips_elf_link_hash_entry *) h; |
7837 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 7838 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7839 | /* We need it to tell the dynamic linker if there |
7840 | are relocations against the text segment. */ | |
7841 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 7842 | } |
b49e97c9 TS |
7843 | } |
7844 | ||
7845 | if (SGI_COMPAT (abfd)) | |
7846 | mips_elf_hash_table (info)->compact_rel_size += | |
7847 | sizeof (Elf32_External_crinfo); | |
7848 | break; | |
7849 | ||
7850 | case R_MIPS_26: | |
7851 | case R_MIPS_GPREL16: | |
7852 | case R_MIPS_LITERAL: | |
7853 | case R_MIPS_GPREL32: | |
7854 | if (SGI_COMPAT (abfd)) | |
7855 | mips_elf_hash_table (info)->compact_rel_size += | |
7856 | sizeof (Elf32_External_crinfo); | |
7857 | break; | |
7858 | ||
7859 | /* This relocation describes the C++ object vtable hierarchy. | |
7860 | Reconstruct it for later use during GC. */ | |
7861 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 7862 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 7863 | return FALSE; |
b49e97c9 TS |
7864 | break; |
7865 | ||
7866 | /* This relocation describes which C++ vtable entries are actually | |
7867 | used. Record for later use during GC. */ | |
7868 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
7869 | BFD_ASSERT (h != NULL); |
7870 | if (h != NULL | |
7871 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 7872 | return FALSE; |
b49e97c9 TS |
7873 | break; |
7874 | ||
7875 | default: | |
7876 | break; | |
7877 | } | |
7878 | ||
7879 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
7880 | related to taking the function's address. This doesn't apply to |
7881 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
7882 | a normal .got entry. */ | |
7883 | if (!htab->is_vxworks && h != NULL) | |
7884 | switch (r_type) | |
7885 | { | |
7886 | default: | |
7887 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
7888 | break; | |
738e5348 | 7889 | case R_MIPS16_CALL16: |
0a44bf69 RS |
7890 | case R_MIPS_CALL16: |
7891 | case R_MIPS_CALL_HI16: | |
7892 | case R_MIPS_CALL_LO16: | |
7893 | case R_MIPS_JALR: | |
7894 | break; | |
7895 | } | |
b49e97c9 | 7896 | |
738e5348 RS |
7897 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
7898 | if there is one. We only need to handle global symbols here; | |
7899 | we decide whether to keep or delete stubs for local symbols | |
7900 | when processing the stub's relocations. */ | |
b49e97c9 | 7901 | if (h != NULL |
738e5348 RS |
7902 | && !mips16_call_reloc_p (r_type) |
7903 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
7904 | { |
7905 | struct mips_elf_link_hash_entry *mh; | |
7906 | ||
7907 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 7908 | mh->need_fn_stub = TRUE; |
b49e97c9 | 7909 | } |
861fb55a DJ |
7910 | |
7911 | /* Refuse some position-dependent relocations when creating a | |
7912 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
7913 | not PIC, but we can create dynamic relocations and the result | |
7914 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
7915 | combined with R_MIPS_GOT16. */ | |
7916 | if (info->shared) | |
7917 | { | |
7918 | switch (r_type) | |
7919 | { | |
7920 | case R_MIPS16_HI16: | |
7921 | case R_MIPS_HI16: | |
7922 | case R_MIPS_HIGHER: | |
7923 | case R_MIPS_HIGHEST: | |
7924 | /* Don't refuse a high part relocation if it's against | |
7925 | no symbol (e.g. part of a compound relocation). */ | |
7926 | if (r_symndx == 0) | |
7927 | break; | |
7928 | ||
7929 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
7930 | and has a special meaning. */ | |
7931 | if (!NEWABI_P (abfd) && h != NULL | |
7932 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
7933 | break; | |
7934 | ||
7935 | /* FALLTHROUGH */ | |
7936 | ||
7937 | case R_MIPS16_26: | |
7938 | case R_MIPS_26: | |
7939 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
7940 | (*_bfd_error_handler) | |
7941 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
7942 | abfd, howto->name, | |
7943 | (h) ? h->root.root.string : "a local symbol"); | |
7944 | bfd_set_error (bfd_error_bad_value); | |
7945 | return FALSE; | |
7946 | default: | |
7947 | break; | |
7948 | } | |
7949 | } | |
b49e97c9 TS |
7950 | } |
7951 | ||
b34976b6 | 7952 | return TRUE; |
b49e97c9 TS |
7953 | } |
7954 | \f | |
d0647110 | 7955 | bfd_boolean |
9719ad41 RS |
7956 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
7957 | struct bfd_link_info *link_info, | |
7958 | bfd_boolean *again) | |
d0647110 AO |
7959 | { |
7960 | Elf_Internal_Rela *internal_relocs; | |
7961 | Elf_Internal_Rela *irel, *irelend; | |
7962 | Elf_Internal_Shdr *symtab_hdr; | |
7963 | bfd_byte *contents = NULL; | |
d0647110 AO |
7964 | size_t extsymoff; |
7965 | bfd_boolean changed_contents = FALSE; | |
7966 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
7967 | Elf_Internal_Sym *isymbuf = NULL; | |
7968 | ||
7969 | /* We are not currently changing any sizes, so only one pass. */ | |
7970 | *again = FALSE; | |
7971 | ||
1049f94e | 7972 | if (link_info->relocatable) |
d0647110 AO |
7973 | return TRUE; |
7974 | ||
9719ad41 | 7975 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 7976 | link_info->keep_memory); |
d0647110 AO |
7977 | if (internal_relocs == NULL) |
7978 | return TRUE; | |
7979 | ||
7980 | irelend = internal_relocs + sec->reloc_count | |
7981 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
7982 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7983 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7984 | ||
7985 | for (irel = internal_relocs; irel < irelend; irel++) | |
7986 | { | |
7987 | bfd_vma symval; | |
7988 | bfd_signed_vma sym_offset; | |
7989 | unsigned int r_type; | |
7990 | unsigned long r_symndx; | |
7991 | asection *sym_sec; | |
7992 | unsigned long instruction; | |
7993 | ||
7994 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
7995 | with a JALR relocation, that indicate where they jump to. | |
7996 | This saves some pipeline bubbles. */ | |
7997 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
7998 | if (r_type != R_MIPS_JALR) | |
7999 | continue; | |
8000 | ||
8001 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
8002 | /* Compute the address of the jump target. */ | |
8003 | if (r_symndx >= extsymoff) | |
8004 | { | |
8005 | struct mips_elf_link_hash_entry *h | |
8006 | = ((struct mips_elf_link_hash_entry *) | |
8007 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
8008 | ||
8009 | while (h->root.root.type == bfd_link_hash_indirect | |
8010 | || h->root.root.type == bfd_link_hash_warning) | |
8011 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 8012 | |
d0647110 AO |
8013 | /* If a symbol is undefined, or if it may be overridden, |
8014 | skip it. */ | |
8015 | if (! ((h->root.root.type == bfd_link_hash_defined | |
8016 | || h->root.root.type == bfd_link_hash_defweak) | |
8017 | && h->root.root.u.def.section) | |
8018 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 8019 | && !h->root.forced_local)) |
d0647110 AO |
8020 | continue; |
8021 | ||
8022 | sym_sec = h->root.root.u.def.section; | |
8023 | if (sym_sec->output_section) | |
8024 | symval = (h->root.root.u.def.value | |
8025 | + sym_sec->output_section->vma | |
8026 | + sym_sec->output_offset); | |
8027 | else | |
8028 | symval = h->root.root.u.def.value; | |
8029 | } | |
8030 | else | |
8031 | { | |
8032 | Elf_Internal_Sym *isym; | |
8033 | ||
8034 | /* Read this BFD's symbols if we haven't done so already. */ | |
8035 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
8036 | { | |
8037 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8038 | if (isymbuf == NULL) | |
8039 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8040 | symtab_hdr->sh_info, 0, | |
8041 | NULL, NULL, NULL); | |
8042 | if (isymbuf == NULL) | |
8043 | goto relax_return; | |
8044 | } | |
8045 | ||
8046 | isym = isymbuf + r_symndx; | |
8047 | if (isym->st_shndx == SHN_UNDEF) | |
8048 | continue; | |
8049 | else if (isym->st_shndx == SHN_ABS) | |
8050 | sym_sec = bfd_abs_section_ptr; | |
8051 | else if (isym->st_shndx == SHN_COMMON) | |
8052 | sym_sec = bfd_com_section_ptr; | |
8053 | else | |
8054 | sym_sec | |
8055 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8056 | symval = isym->st_value | |
8057 | + sym_sec->output_section->vma | |
8058 | + sym_sec->output_offset; | |
8059 | } | |
8060 | ||
8061 | /* Compute branch offset, from delay slot of the jump to the | |
8062 | branch target. */ | |
8063 | sym_offset = (symval + irel->r_addend) | |
8064 | - (sec_start + irel->r_offset + 4); | |
8065 | ||
8066 | /* Branch offset must be properly aligned. */ | |
8067 | if ((sym_offset & 3) != 0) | |
8068 | continue; | |
8069 | ||
8070 | sym_offset >>= 2; | |
8071 | ||
8072 | /* Check that it's in range. */ | |
8073 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
8074 | continue; | |
143d77c5 | 8075 | |
d0647110 | 8076 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
8077 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
8078 | goto relax_return; | |
d0647110 AO |
8079 | |
8080 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
8081 | ||
8082 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
8083 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
8084 | instruction = 0x04110000; | |
8085 | /* If it was jr <reg>, turn it into b <target>. */ | |
8086 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
8087 | instruction = 0x10000000; | |
8088 | else | |
8089 | continue; | |
8090 | ||
8091 | instruction |= (sym_offset & 0xffff); | |
8092 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
8093 | changed_contents = TRUE; | |
8094 | } | |
8095 | ||
8096 | if (contents != NULL | |
8097 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8098 | { | |
8099 | if (!changed_contents && !link_info->keep_memory) | |
8100 | free (contents); | |
8101 | else | |
8102 | { | |
8103 | /* Cache the section contents for elf_link_input_bfd. */ | |
8104 | elf_section_data (sec)->this_hdr.contents = contents; | |
8105 | } | |
8106 | } | |
8107 | return TRUE; | |
8108 | ||
143d77c5 | 8109 | relax_return: |
eea6121a AM |
8110 | if (contents != NULL |
8111 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8112 | free (contents); | |
d0647110 AO |
8113 | return FALSE; |
8114 | } | |
8115 | \f | |
9a59ad6b DJ |
8116 | /* Allocate space for global sym dynamic relocs. */ |
8117 | ||
8118 | static bfd_boolean | |
8119 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8120 | { | |
8121 | struct bfd_link_info *info = inf; | |
8122 | bfd *dynobj; | |
8123 | struct mips_elf_link_hash_entry *hmips; | |
8124 | struct mips_elf_link_hash_table *htab; | |
8125 | ||
8126 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8127 | BFD_ASSERT (htab != NULL); |
8128 | ||
9a59ad6b DJ |
8129 | dynobj = elf_hash_table (info)->dynobj; |
8130 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8131 | ||
8132 | /* VxWorks executables are handled elsewhere; we only need to | |
8133 | allocate relocations in shared objects. */ | |
8134 | if (htab->is_vxworks && !info->shared) | |
8135 | return TRUE; | |
8136 | ||
63897e2c RS |
8137 | /* Ignore indirect and warning symbols. All relocations against |
8138 | such symbols will be redirected to the target symbol. */ | |
8139 | if (h->root.type == bfd_link_hash_indirect | |
8140 | || h->root.type == bfd_link_hash_warning) | |
8141 | return TRUE; | |
8142 | ||
9a59ad6b DJ |
8143 | /* If this symbol is defined in a dynamic object, or we are creating |
8144 | a shared library, we will need to copy any R_MIPS_32 or | |
8145 | R_MIPS_REL32 relocs against it into the output file. */ | |
8146 | if (! info->relocatable | |
8147 | && hmips->possibly_dynamic_relocs != 0 | |
8148 | && (h->root.type == bfd_link_hash_defweak | |
8149 | || !h->def_regular | |
8150 | || info->shared)) | |
8151 | { | |
8152 | bfd_boolean do_copy = TRUE; | |
8153 | ||
8154 | if (h->root.type == bfd_link_hash_undefweak) | |
8155 | { | |
8156 | /* Do not copy relocations for undefined weak symbols with | |
8157 | non-default visibility. */ | |
8158 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8159 | do_copy = FALSE; | |
8160 | ||
8161 | /* Make sure undefined weak symbols are output as a dynamic | |
8162 | symbol in PIEs. */ | |
8163 | else if (h->dynindx == -1 && !h->forced_local) | |
8164 | { | |
8165 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8166 | return FALSE; | |
8167 | } | |
8168 | } | |
8169 | ||
8170 | if (do_copy) | |
8171 | { | |
aff469fa RS |
8172 | /* Even though we don't directly need a GOT entry for this symbol, |
8173 | a symbol must have a dynamic symbol table index greater that | |
8174 | DT_MIPS_GOTSYM if there are dynamic relocations against it. */ | |
8175 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8176 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8177 | ||
9a59ad6b DJ |
8178 | mips_elf_allocate_dynamic_relocations |
8179 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8180 | if (hmips->readonly_reloc) | |
8181 | /* We tell the dynamic linker that there are relocations | |
8182 | against the text segment. */ | |
8183 | info->flags |= DF_TEXTREL; | |
8184 | } | |
8185 | } | |
8186 | ||
8187 | return TRUE; | |
8188 | } | |
8189 | ||
b49e97c9 TS |
8190 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8191 | regular object. The current definition is in some section of the | |
8192 | dynamic object, but we're not including those sections. We have to | |
8193 | change the definition to something the rest of the link can | |
8194 | understand. */ | |
8195 | ||
b34976b6 | 8196 | bfd_boolean |
9719ad41 RS |
8197 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
8198 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
8199 | { |
8200 | bfd *dynobj; | |
8201 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 8202 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8203 | |
5108fc1b | 8204 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8205 | BFD_ASSERT (htab != NULL); |
8206 | ||
b49e97c9 | 8207 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 8208 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
8209 | |
8210 | /* Make sure we know what is going on here. */ | |
8211 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8212 | && (h->needs_plt |
f6e332e6 | 8213 | || h->u.weakdef != NULL |
f5385ebf AM |
8214 | || (h->def_dynamic |
8215 | && h->ref_regular | |
8216 | && !h->def_regular))); | |
b49e97c9 | 8217 | |
b49e97c9 | 8218 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8219 | |
861fb55a DJ |
8220 | /* If there are call relocations against an externally-defined symbol, |
8221 | see whether we can create a MIPS lazy-binding stub for it. We can | |
8222 | only do this if all references to the function are through call | |
8223 | relocations, and in that case, the traditional lazy-binding stubs | |
8224 | are much more efficient than PLT entries. | |
8225 | ||
8226 | Traditional stubs are only available on SVR4 psABI-based systems; | |
8227 | VxWorks always uses PLTs instead. */ | |
8228 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
8229 | { |
8230 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 8231 | return TRUE; |
b49e97c9 TS |
8232 | |
8233 | /* If this symbol is not defined in a regular file, then set | |
8234 | the symbol to the stub location. This is required to make | |
8235 | function pointers compare as equal between the normal | |
8236 | executable and the shared library. */ | |
f5385ebf | 8237 | if (!h->def_regular) |
b49e97c9 | 8238 | { |
33bb52fb RS |
8239 | hmips->needs_lazy_stub = TRUE; |
8240 | htab->lazy_stub_count++; | |
b34976b6 | 8241 | return TRUE; |
b49e97c9 TS |
8242 | } |
8243 | } | |
861fb55a DJ |
8244 | /* As above, VxWorks requires PLT entries for externally-defined |
8245 | functions that are only accessed through call relocations. | |
b49e97c9 | 8246 | |
861fb55a DJ |
8247 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
8248 | are static-only relocations against an externally-defined function. | |
8249 | This can technically occur for shared libraries if there are | |
8250 | branches to the symbol, although it is unlikely that this will be | |
8251 | used in practice due to the short ranges involved. It can occur | |
8252 | for any relative or absolute relocation in executables; in that | |
8253 | case, the PLT entry becomes the function's canonical address. */ | |
8254 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
8255 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
8256 | && htab->use_plts_and_copy_relocs | |
8257 | && !SYMBOL_CALLS_LOCAL (info, h) | |
8258 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8259 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 8260 | { |
861fb55a DJ |
8261 | /* If this is the first symbol to need a PLT entry, allocate room |
8262 | for the header. */ | |
8263 | if (htab->splt->size == 0) | |
8264 | { | |
8265 | BFD_ASSERT (htab->sgotplt->size == 0); | |
0a44bf69 | 8266 | |
861fb55a DJ |
8267 | /* If we're using the PLT additions to the psABI, each PLT |
8268 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
8269 | Encourage better cache usage by aligning. We do this | |
8270 | lazily to avoid pessimizing traditional objects. */ | |
8271 | if (!htab->is_vxworks | |
8272 | && !bfd_set_section_alignment (dynobj, htab->splt, 5)) | |
8273 | return FALSE; | |
0a44bf69 | 8274 | |
861fb55a DJ |
8275 | /* Make sure that .got.plt is word-aligned. We do this lazily |
8276 | for the same reason as above. */ | |
8277 | if (!bfd_set_section_alignment (dynobj, htab->sgotplt, | |
8278 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
8279 | return FALSE; | |
0a44bf69 | 8280 | |
861fb55a | 8281 | htab->splt->size += htab->plt_header_size; |
0a44bf69 | 8282 | |
861fb55a DJ |
8283 | /* On non-VxWorks targets, the first two entries in .got.plt |
8284 | are reserved. */ | |
8285 | if (!htab->is_vxworks) | |
8286 | htab->sgotplt->size += 2 * MIPS_ELF_GOT_SIZE (dynobj); | |
0a44bf69 | 8287 | |
861fb55a DJ |
8288 | /* On VxWorks, also allocate room for the header's |
8289 | .rela.plt.unloaded entries. */ | |
8290 | if (htab->is_vxworks && !info->shared) | |
0a44bf69 RS |
8291 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
8292 | } | |
8293 | ||
8294 | /* Assign the next .plt entry to this symbol. */ | |
8295 | h->plt.offset = htab->splt->size; | |
8296 | htab->splt->size += htab->plt_entry_size; | |
8297 | ||
8298 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 8299 | symbol's value to the address of the stub. */ |
131eb6b7 | 8300 | if (!info->shared && !h->def_regular) |
0a44bf69 RS |
8301 | { |
8302 | h->root.u.def.section = htab->splt; | |
8303 | h->root.u.def.value = h->plt.offset; | |
861fb55a DJ |
8304 | /* For VxWorks, point at the PLT load stub rather than the |
8305 | lazy resolution stub; this stub will become the canonical | |
8306 | function address. */ | |
8307 | if (htab->is_vxworks) | |
8308 | h->root.u.def.value += 8; | |
0a44bf69 RS |
8309 | } |
8310 | ||
861fb55a DJ |
8311 | /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT |
8312 | relocation. */ | |
8313 | htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj); | |
8314 | htab->srelplt->size += (htab->is_vxworks | |
8315 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
8316 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
8317 | |
8318 | /* Make room for the .rela.plt.unloaded relocations. */ | |
861fb55a | 8319 | if (htab->is_vxworks && !info->shared) |
0a44bf69 RS |
8320 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
8321 | ||
861fb55a DJ |
8322 | /* All relocations against this symbol that could have been made |
8323 | dynamic will now refer to the PLT entry instead. */ | |
8324 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 8325 | |
0a44bf69 RS |
8326 | return TRUE; |
8327 | } | |
8328 | ||
8329 | /* If this is a weak symbol, and there is a real definition, the | |
8330 | processor independent code will have arranged for us to see the | |
8331 | real definition first, and we can just use the same value. */ | |
8332 | if (h->u.weakdef != NULL) | |
8333 | { | |
8334 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
8335 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8336 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8337 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
8338 | return TRUE; | |
8339 | } | |
8340 | ||
861fb55a DJ |
8341 | /* Otherwise, there is nothing further to do for symbols defined |
8342 | in regular objects. */ | |
8343 | if (h->def_regular) | |
0a44bf69 RS |
8344 | return TRUE; |
8345 | ||
861fb55a DJ |
8346 | /* There's also nothing more to do if we'll convert all relocations |
8347 | against this symbol into dynamic relocations. */ | |
8348 | if (!hmips->has_static_relocs) | |
8349 | return TRUE; | |
8350 | ||
8351 | /* We're now relying on copy relocations. Complain if we have | |
8352 | some that we can't convert. */ | |
8353 | if (!htab->use_plts_and_copy_relocs || info->shared) | |
8354 | { | |
8355 | (*_bfd_error_handler) (_("non-dynamic relocations refer to " | |
8356 | "dynamic symbol %s"), | |
8357 | h->root.root.string); | |
8358 | bfd_set_error (bfd_error_bad_value); | |
8359 | return FALSE; | |
8360 | } | |
8361 | ||
0a44bf69 RS |
8362 | /* We must allocate the symbol in our .dynbss section, which will |
8363 | become part of the .bss section of the executable. There will be | |
8364 | an entry for this symbol in the .dynsym section. The dynamic | |
8365 | object will contain position independent code, so all references | |
8366 | from the dynamic object to this symbol will go through the global | |
8367 | offset table. The dynamic linker will use the .dynsym entry to | |
8368 | determine the address it must put in the global offset table, so | |
8369 | both the dynamic object and the regular object will refer to the | |
8370 | same memory location for the variable. */ | |
8371 | ||
8372 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
8373 | { | |
861fb55a DJ |
8374 | if (htab->is_vxworks) |
8375 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
8376 | else | |
8377 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
8378 | h->needs_copy = 1; |
8379 | } | |
8380 | ||
861fb55a DJ |
8381 | /* All relocations against this symbol that could have been made |
8382 | dynamic will now refer to the local copy instead. */ | |
8383 | hmips->possibly_dynamic_relocs = 0; | |
8384 | ||
027297b7 | 8385 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 8386 | } |
b49e97c9 TS |
8387 | \f |
8388 | /* This function is called after all the input files have been read, | |
8389 | and the input sections have been assigned to output sections. We | |
8390 | check for any mips16 stub sections that we can discard. */ | |
8391 | ||
b34976b6 | 8392 | bfd_boolean |
9719ad41 RS |
8393 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
8394 | struct bfd_link_info *info) | |
b49e97c9 TS |
8395 | { |
8396 | asection *ri; | |
0a44bf69 | 8397 | struct mips_elf_link_hash_table *htab; |
861fb55a | 8398 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
8399 | |
8400 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 8401 | BFD_ASSERT (htab != NULL); |
f4416af6 | 8402 | |
b49e97c9 TS |
8403 | /* The .reginfo section has a fixed size. */ |
8404 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8405 | if (ri != NULL) | |
9719ad41 | 8406 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 8407 | |
861fb55a DJ |
8408 | hti.info = info; |
8409 | hti.output_bfd = output_bfd; | |
8410 | hti.error = FALSE; | |
8411 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8412 | mips_elf_check_symbols, &hti); | |
8413 | if (hti.error) | |
8414 | return FALSE; | |
f4416af6 | 8415 | |
33bb52fb RS |
8416 | return TRUE; |
8417 | } | |
8418 | ||
8419 | /* If the link uses a GOT, lay it out and work out its size. */ | |
8420 | ||
8421 | static bfd_boolean | |
8422 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
8423 | { | |
8424 | bfd *dynobj; | |
8425 | asection *s; | |
8426 | struct mips_got_info *g; | |
33bb52fb RS |
8427 | bfd_size_type loadable_size = 0; |
8428 | bfd_size_type page_gotno; | |
8429 | bfd *sub; | |
8430 | struct mips_elf_count_tls_arg count_tls_arg; | |
8431 | struct mips_elf_link_hash_table *htab; | |
8432 | ||
8433 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8434 | BFD_ASSERT (htab != NULL); |
8435 | ||
a8028dd0 | 8436 | s = htab->sgot; |
f4416af6 | 8437 | if (s == NULL) |
b34976b6 | 8438 | return TRUE; |
b49e97c9 | 8439 | |
33bb52fb | 8440 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
8441 | g = htab->got_info; |
8442 | ||
861fb55a DJ |
8443 | /* Allocate room for the reserved entries. VxWorks always reserves |
8444 | 3 entries; other objects only reserve 2 entries. */ | |
8445 | BFD_ASSERT (g->assigned_gotno == 0); | |
8446 | if (htab->is_vxworks) | |
8447 | htab->reserved_gotno = 3; | |
8448 | else | |
8449 | htab->reserved_gotno = 2; | |
8450 | g->local_gotno += htab->reserved_gotno; | |
8451 | g->assigned_gotno = htab->reserved_gotno; | |
8452 | ||
33bb52fb RS |
8453 | /* Replace entries for indirect and warning symbols with entries for |
8454 | the target symbol. */ | |
8455 | if (!mips_elf_resolve_final_got_entries (g)) | |
8456 | return FALSE; | |
f4416af6 | 8457 | |
d4596a51 RS |
8458 | /* Count the number of GOT symbols. */ |
8459 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, g); | |
f4416af6 | 8460 | |
33bb52fb RS |
8461 | /* Calculate the total loadable size of the output. That |
8462 | will give us the maximum number of GOT_PAGE entries | |
8463 | required. */ | |
8464 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
8465 | { | |
8466 | asection *subsection; | |
5108fc1b | 8467 | |
33bb52fb RS |
8468 | for (subsection = sub->sections; |
8469 | subsection; | |
8470 | subsection = subsection->next) | |
8471 | { | |
8472 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8473 | continue; | |
8474 | loadable_size += ((subsection->size + 0xf) | |
8475 | &~ (bfd_size_type) 0xf); | |
8476 | } | |
8477 | } | |
f4416af6 | 8478 | |
0a44bf69 | 8479 | if (htab->is_vxworks) |
738e5348 | 8480 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
8481 | relocations against local symbols evaluate to "G", and the EABI does |
8482 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 8483 | page_gotno = 0; |
0a44bf69 RS |
8484 | else |
8485 | /* Assume there are two loadable segments consisting of contiguous | |
8486 | sections. Is 5 enough? */ | |
c224138d RS |
8487 | page_gotno = (loadable_size >> 16) + 5; |
8488 | ||
8489 | /* Choose the smaller of the two estimates; both are intended to be | |
8490 | conservative. */ | |
8491 | if (page_gotno > g->page_gotno) | |
8492 | page_gotno = g->page_gotno; | |
f4416af6 | 8493 | |
c224138d | 8494 | g->local_gotno += page_gotno; |
eea6121a | 8495 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
d4596a51 | 8496 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 | 8497 | |
0f20cc35 DJ |
8498 | /* We need to calculate tls_gotno for global symbols at this point |
8499 | instead of building it up earlier, to avoid doublecounting | |
8500 | entries for one global symbol from multiple input files. */ | |
8501 | count_tls_arg.info = info; | |
8502 | count_tls_arg.needed = 0; | |
8503 | elf_link_hash_traverse (elf_hash_table (info), | |
8504 | mips_elf_count_global_tls_entries, | |
8505 | &count_tls_arg); | |
8506 | g->tls_gotno += count_tls_arg.needed; | |
8507 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
8508 | ||
0a44bf69 RS |
8509 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
8510 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
8511 | dynamic loader. */ | |
33bb52fb RS |
8512 | if (htab->is_vxworks) |
8513 | { | |
8514 | /* VxWorks executables do not need a GOT. */ | |
8515 | if (info->shared) | |
8516 | { | |
8517 | /* Each VxWorks GOT entry needs an explicit relocation. */ | |
8518 | unsigned int count; | |
8519 | ||
861fb55a | 8520 | count = g->global_gotno + g->local_gotno - htab->reserved_gotno; |
33bb52fb RS |
8521 | if (count) |
8522 | mips_elf_allocate_dynamic_relocations (dynobj, info, count); | |
8523 | } | |
8524 | } | |
8525 | else if (s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 8526 | { |
a8028dd0 | 8527 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
8528 | return FALSE; |
8529 | } | |
8530 | else | |
8531 | { | |
33bb52fb RS |
8532 | struct mips_elf_count_tls_arg arg; |
8533 | ||
8534 | /* Set up TLS entries. */ | |
0f20cc35 DJ |
8535 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
8536 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
33bb52fb RS |
8537 | |
8538 | /* Allocate room for the TLS relocations. */ | |
8539 | arg.info = info; | |
8540 | arg.needed = 0; | |
8541 | htab_traverse (g->got_entries, mips_elf_count_local_tls_relocs, &arg); | |
8542 | elf_link_hash_traverse (elf_hash_table (info), | |
8543 | mips_elf_count_global_tls_relocs, | |
8544 | &arg); | |
8545 | if (arg.needed) | |
8546 | mips_elf_allocate_dynamic_relocations (dynobj, info, arg.needed); | |
0f20cc35 | 8547 | } |
b49e97c9 | 8548 | |
b34976b6 | 8549 | return TRUE; |
b49e97c9 TS |
8550 | } |
8551 | ||
33bb52fb RS |
8552 | /* Estimate the size of the .MIPS.stubs section. */ |
8553 | ||
8554 | static void | |
8555 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
8556 | { | |
8557 | struct mips_elf_link_hash_table *htab; | |
8558 | bfd_size_type dynsymcount; | |
8559 | ||
8560 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8561 | BFD_ASSERT (htab != NULL); |
8562 | ||
33bb52fb RS |
8563 | if (htab->lazy_stub_count == 0) |
8564 | return; | |
8565 | ||
8566 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
8567 | section, so add a dummy entry to the end. */ | |
8568 | htab->lazy_stub_count++; | |
8569 | ||
8570 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
8571 | At this point, dynsymcount does not account for section symbols | |
8572 | and count_section_dynsyms may overestimate the number that will | |
8573 | be needed. */ | |
8574 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
8575 | + count_section_dynsyms (output_bfd, info)); | |
8576 | ||
8577 | /* Determine the size of one stub entry. */ | |
8578 | htab->function_stub_size = (dynsymcount > 0x10000 | |
8579 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
8580 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
8581 | ||
8582 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
8583 | } | |
8584 | ||
8585 | /* A mips_elf_link_hash_traverse callback for which DATA points to the | |
8586 | MIPS hash table. If H needs a traditional MIPS lazy-binding stub, | |
8587 | allocate an entry in the stubs section. */ | |
8588 | ||
8589 | static bfd_boolean | |
8590 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void **data) | |
8591 | { | |
8592 | struct mips_elf_link_hash_table *htab; | |
8593 | ||
8594 | htab = (struct mips_elf_link_hash_table *) data; | |
8595 | if (h->needs_lazy_stub) | |
8596 | { | |
8597 | h->root.root.u.def.section = htab->sstubs; | |
8598 | h->root.root.u.def.value = htab->sstubs->size; | |
8599 | h->root.plt.offset = htab->sstubs->size; | |
8600 | htab->sstubs->size += htab->function_stub_size; | |
8601 | } | |
8602 | return TRUE; | |
8603 | } | |
8604 | ||
8605 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
8606 | Set the final size of the .MIPS.stub section. */ | |
8607 | ||
8608 | static void | |
8609 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) | |
8610 | { | |
8611 | struct mips_elf_link_hash_table *htab; | |
8612 | ||
8613 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8614 | BFD_ASSERT (htab != NULL); |
8615 | ||
33bb52fb RS |
8616 | if (htab->lazy_stub_count == 0) |
8617 | return; | |
8618 | ||
8619 | htab->sstubs->size = 0; | |
4dfe6ac6 | 8620 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, htab); |
33bb52fb RS |
8621 | htab->sstubs->size += htab->function_stub_size; |
8622 | BFD_ASSERT (htab->sstubs->size | |
8623 | == htab->lazy_stub_count * htab->function_stub_size); | |
8624 | } | |
8625 | ||
b49e97c9 TS |
8626 | /* Set the sizes of the dynamic sections. */ |
8627 | ||
b34976b6 | 8628 | bfd_boolean |
9719ad41 RS |
8629 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
8630 | struct bfd_link_info *info) | |
b49e97c9 TS |
8631 | { |
8632 | bfd *dynobj; | |
861fb55a | 8633 | asection *s, *sreldyn; |
b34976b6 | 8634 | bfd_boolean reltext; |
0a44bf69 | 8635 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8636 | |
0a44bf69 | 8637 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 8638 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
8639 | dynobj = elf_hash_table (info)->dynobj; |
8640 | BFD_ASSERT (dynobj != NULL); | |
8641 | ||
8642 | if (elf_hash_table (info)->dynamic_sections_created) | |
8643 | { | |
8644 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 8645 | if (info->executable) |
b49e97c9 TS |
8646 | { |
8647 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8648 | BFD_ASSERT (s != NULL); | |
eea6121a | 8649 | s->size |
b49e97c9 TS |
8650 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
8651 | s->contents | |
8652 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
8653 | } | |
861fb55a DJ |
8654 | |
8655 | /* Create a symbol for the PLT, if we know that we are using it. */ | |
8656 | if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL) | |
8657 | { | |
8658 | struct elf_link_hash_entry *h; | |
8659 | ||
8660 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
8661 | ||
8662 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt, | |
8663 | "_PROCEDURE_LINKAGE_TABLE_"); | |
8664 | htab->root.hplt = h; | |
8665 | if (h == NULL) | |
8666 | return FALSE; | |
8667 | h->type = STT_FUNC; | |
8668 | } | |
8669 | } | |
4e41d0d7 | 8670 | |
9a59ad6b DJ |
8671 | /* Allocate space for global sym dynamic relocs. */ |
8672 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (PTR) info); | |
8673 | ||
33bb52fb RS |
8674 | mips_elf_estimate_stub_size (output_bfd, info); |
8675 | ||
8676 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
8677 | return FALSE; | |
8678 | ||
8679 | mips_elf_lay_out_lazy_stubs (info); | |
8680 | ||
b49e97c9 TS |
8681 | /* The check_relocs and adjust_dynamic_symbol entry points have |
8682 | determined the sizes of the various dynamic sections. Allocate | |
8683 | memory for them. */ | |
b34976b6 | 8684 | reltext = FALSE; |
b49e97c9 TS |
8685 | for (s = dynobj->sections; s != NULL; s = s->next) |
8686 | { | |
8687 | const char *name; | |
b49e97c9 TS |
8688 | |
8689 | /* It's OK to base decisions on the section name, because none | |
8690 | of the dynobj section names depend upon the input files. */ | |
8691 | name = bfd_get_section_name (dynobj, s); | |
8692 | ||
8693 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8694 | continue; | |
8695 | ||
0112cd26 | 8696 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 8697 | { |
c456f082 | 8698 | if (s->size != 0) |
b49e97c9 TS |
8699 | { |
8700 | const char *outname; | |
8701 | asection *target; | |
8702 | ||
8703 | /* If this relocation section applies to a read only | |
8704 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 8705 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
8706 | assert a DT_TEXTREL entry rather than testing whether |
8707 | there exists a relocation to a read only section or | |
8708 | not. */ | |
8709 | outname = bfd_get_section_name (output_bfd, | |
8710 | s->output_section); | |
8711 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
8712 | if ((target != NULL | |
8713 | && (target->flags & SEC_READONLY) != 0 | |
8714 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 8715 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 8716 | reltext = TRUE; |
b49e97c9 TS |
8717 | |
8718 | /* We use the reloc_count field as a counter if we need | |
8719 | to copy relocs into the output file. */ | |
0a44bf69 | 8720 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 8721 | s->reloc_count = 0; |
f4416af6 AO |
8722 | |
8723 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
8724 | sort relocations, but in a different way than we do, | |
8725 | and before we're done creating relocations. Also, it | |
8726 | will move them around between input sections' | |
8727 | relocation's contents, so our sorting would be | |
8728 | broken, so don't let it run. */ | |
8729 | info->combreloc = 0; | |
b49e97c9 TS |
8730 | } |
8731 | } | |
b49e97c9 TS |
8732 | else if (! info->shared |
8733 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 8734 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 8735 | { |
5108fc1b | 8736 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 8737 | rtld to contain a pointer to the _r_debug structure. */ |
eea6121a | 8738 | s->size += 4; |
b49e97c9 TS |
8739 | } |
8740 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 8741 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 8742 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
861fb55a DJ |
8743 | else if (s == htab->splt) |
8744 | { | |
8745 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
8746 | room for an extra nop to fill the delay slot. This is |
8747 | for CPUs without load interlocking. */ | |
8748 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
8749 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
8750 | s->size += 4; |
8751 | } | |
0112cd26 | 8752 | else if (! CONST_STRNEQ (name, ".init") |
33bb52fb | 8753 | && s != htab->sgot |
0a44bf69 | 8754 | && s != htab->sgotplt |
861fb55a DJ |
8755 | && s != htab->sstubs |
8756 | && s != htab->sdynbss) | |
b49e97c9 TS |
8757 | { |
8758 | /* It's not one of our sections, so don't allocate space. */ | |
8759 | continue; | |
8760 | } | |
8761 | ||
c456f082 | 8762 | if (s->size == 0) |
b49e97c9 | 8763 | { |
8423293d | 8764 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
8765 | continue; |
8766 | } | |
8767 | ||
c456f082 AM |
8768 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
8769 | continue; | |
8770 | ||
b49e97c9 | 8771 | /* Allocate memory for the section contents. */ |
eea6121a | 8772 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 8773 | if (s->contents == NULL) |
b49e97c9 TS |
8774 | { |
8775 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 8776 | return FALSE; |
b49e97c9 TS |
8777 | } |
8778 | } | |
8779 | ||
8780 | if (elf_hash_table (info)->dynamic_sections_created) | |
8781 | { | |
8782 | /* Add some entries to the .dynamic section. We fill in the | |
8783 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
8784 | must add the entries now so that we get the correct size for | |
5750dcec | 8785 | the .dynamic section. */ |
af5978fb RS |
8786 | |
8787 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec DJ |
8788 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
8789 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and GDB only | |
8790 | looks at the first one it sees. */ | |
af5978fb RS |
8791 | if (!info->shared |
8792 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
8793 | return FALSE; | |
b49e97c9 | 8794 | |
5750dcec DJ |
8795 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
8796 | used by the debugger. */ | |
8797 | if (info->executable | |
8798 | && !SGI_COMPAT (output_bfd) | |
8799 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
8800 | return FALSE; | |
8801 | ||
0a44bf69 | 8802 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
8803 | info->flags |= DF_TEXTREL; |
8804 | ||
8805 | if ((info->flags & DF_TEXTREL) != 0) | |
8806 | { | |
8807 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 8808 | return FALSE; |
943284cc DJ |
8809 | |
8810 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
8811 | write out an actual text relocation; we may not, because | |
8812 | at this point we do not know whether e.g. any .eh_frame | |
8813 | absolute relocations have been converted to PC-relative. */ | |
8814 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
8815 | } |
8816 | ||
8817 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 8818 | return FALSE; |
b49e97c9 | 8819 | |
861fb55a | 8820 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 8821 | if (htab->is_vxworks) |
b49e97c9 | 8822 | { |
0a44bf69 RS |
8823 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
8824 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 8825 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
8826 | { |
8827 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
8828 | return FALSE; | |
b49e97c9 | 8829 | |
0a44bf69 RS |
8830 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
8831 | return FALSE; | |
b49e97c9 | 8832 | |
0a44bf69 RS |
8833 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
8834 | return FALSE; | |
8835 | } | |
b49e97c9 | 8836 | } |
0a44bf69 RS |
8837 | else |
8838 | { | |
861fb55a | 8839 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
8840 | { |
8841 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
8842 | return FALSE; | |
b49e97c9 | 8843 | |
0a44bf69 RS |
8844 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
8845 | return FALSE; | |
b49e97c9 | 8846 | |
0a44bf69 RS |
8847 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
8848 | return FALSE; | |
8849 | } | |
b49e97c9 | 8850 | |
0a44bf69 RS |
8851 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
8852 | return FALSE; | |
b49e97c9 | 8853 | |
0a44bf69 RS |
8854 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
8855 | return FALSE; | |
b49e97c9 | 8856 | |
0a44bf69 RS |
8857 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
8858 | return FALSE; | |
b49e97c9 | 8859 | |
0a44bf69 RS |
8860 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
8861 | return FALSE; | |
b49e97c9 | 8862 | |
0a44bf69 RS |
8863 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
8864 | return FALSE; | |
b49e97c9 | 8865 | |
0a44bf69 RS |
8866 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
8867 | return FALSE; | |
b49e97c9 | 8868 | |
0a44bf69 RS |
8869 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
8870 | return FALSE; | |
8871 | ||
8872 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
8873 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
8874 | return FALSE; | |
8875 | ||
8876 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
8877 | && (bfd_get_section_by_name | |
8878 | (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) | |
8879 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) | |
8880 | return FALSE; | |
8881 | } | |
861fb55a DJ |
8882 | if (htab->splt->size > 0) |
8883 | { | |
8884 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
8885 | return FALSE; | |
8886 | ||
8887 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
8888 | return FALSE; | |
8889 | ||
8890 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
8891 | return FALSE; | |
8892 | ||
8893 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
8894 | return FALSE; | |
8895 | } | |
7a2b07ff NS |
8896 | if (htab->is_vxworks |
8897 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
8898 | return FALSE; | |
b49e97c9 TS |
8899 | } |
8900 | ||
b34976b6 | 8901 | return TRUE; |
b49e97c9 TS |
8902 | } |
8903 | \f | |
81d43bff RS |
8904 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
8905 | Adjust its R_ADDEND field so that it is correct for the output file. | |
8906 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
8907 | and sections respectively; both use symbol indexes. */ | |
8908 | ||
8909 | static void | |
8910 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
8911 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
8912 | asection **local_sections, Elf_Internal_Rela *rel) | |
8913 | { | |
8914 | unsigned int r_type, r_symndx; | |
8915 | Elf_Internal_Sym *sym; | |
8916 | asection *sec; | |
8917 | ||
8918 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) | |
8919 | { | |
8920 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
8921 | if (r_type == R_MIPS16_GPREL | |
8922 | || r_type == R_MIPS_GPREL16 | |
8923 | || r_type == R_MIPS_GPREL32 | |
8924 | || r_type == R_MIPS_LITERAL) | |
8925 | { | |
8926 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
8927 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
8928 | } | |
8929 | ||
8930 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
8931 | sym = local_syms + r_symndx; | |
8932 | ||
8933 | /* Adjust REL's addend to account for section merging. */ | |
8934 | if (!info->relocatable) | |
8935 | { | |
8936 | sec = local_sections[r_symndx]; | |
8937 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
8938 | } | |
8939 | ||
8940 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
8941 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8942 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
8943 | } | |
8944 | } | |
8945 | ||
b49e97c9 TS |
8946 | /* Relocate a MIPS ELF section. */ |
8947 | ||
b34976b6 | 8948 | bfd_boolean |
9719ad41 RS |
8949 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
8950 | bfd *input_bfd, asection *input_section, | |
8951 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
8952 | Elf_Internal_Sym *local_syms, | |
8953 | asection **local_sections) | |
b49e97c9 TS |
8954 | { |
8955 | Elf_Internal_Rela *rel; | |
8956 | const Elf_Internal_Rela *relend; | |
8957 | bfd_vma addend = 0; | |
b34976b6 | 8958 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 8959 | const struct elf_backend_data *bed; |
b49e97c9 TS |
8960 | |
8961 | bed = get_elf_backend_data (output_bfd); | |
8962 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
8963 | for (rel = relocs; rel < relend; ++rel) | |
8964 | { | |
8965 | const char *name; | |
c9adbffe | 8966 | bfd_vma value = 0; |
b49e97c9 | 8967 | reloc_howto_type *howto; |
38a7df63 | 8968 | bfd_boolean cross_mode_jump_p; |
b34976b6 | 8969 | /* TRUE if the relocation is a RELA relocation, rather than a |
b49e97c9 | 8970 | REL relocation. */ |
b34976b6 | 8971 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 8972 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 8973 | const char *msg; |
ab96bf03 AM |
8974 | unsigned long r_symndx; |
8975 | asection *sec; | |
749b8d9d L |
8976 | Elf_Internal_Shdr *symtab_hdr; |
8977 | struct elf_link_hash_entry *h; | |
b49e97c9 TS |
8978 | |
8979 | /* Find the relocation howto for this relocation. */ | |
ab96bf03 AM |
8980 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, |
8981 | NEWABI_P (input_bfd) | |
8982 | && (MIPS_RELOC_RELA_P | |
8983 | (input_bfd, input_section, | |
8984 | rel - relocs))); | |
8985 | ||
8986 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 8987 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
ab96bf03 | 8988 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) |
749b8d9d L |
8989 | { |
8990 | sec = local_sections[r_symndx]; | |
8991 | h = NULL; | |
8992 | } | |
ab96bf03 AM |
8993 | else |
8994 | { | |
ab96bf03 | 8995 | unsigned long extsymoff; |
ab96bf03 | 8996 | |
ab96bf03 AM |
8997 | extsymoff = 0; |
8998 | if (!elf_bad_symtab (input_bfd)) | |
8999 | extsymoff = symtab_hdr->sh_info; | |
9000 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
9001 | while (h->root.type == bfd_link_hash_indirect | |
9002 | || h->root.type == bfd_link_hash_warning) | |
9003 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9004 | ||
9005 | sec = NULL; | |
9006 | if (h->root.type == bfd_link_hash_defined | |
9007 | || h->root.type == bfd_link_hash_defweak) | |
9008 | sec = h->root.u.def.section; | |
9009 | } | |
9010 | ||
9011 | if (sec != NULL && elf_discarded_section (sec)) | |
9012 | { | |
9013 | /* For relocs against symbols from removed linkonce sections, | |
9014 | or sections discarded by a linker script, we just want the | |
9015 | section contents zeroed. Avoid any special processing. */ | |
9016 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
9017 | rel->r_info = 0; | |
9018 | rel->r_addend = 0; | |
9019 | continue; | |
9020 | } | |
9021 | ||
4a14403c | 9022 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
9023 | { |
9024 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
9025 | 64-bit code, but make sure all their addresses are in the | |
9026 | lowermost or uppermost 32-bit section of the 64-bit address | |
9027 | space. Thus, when they use an R_MIPS_64 they mean what is | |
9028 | usually meant by R_MIPS_32, with the exception that the | |
9029 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 9030 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
9031 | |
9032 | /* On big-endian systems, we need to lie about the position | |
9033 | of the reloc. */ | |
9034 | if (bfd_big_endian (input_bfd)) | |
9035 | rel->r_offset += 4; | |
9036 | } | |
b49e97c9 TS |
9037 | |
9038 | if (!use_saved_addend_p) | |
9039 | { | |
b49e97c9 TS |
9040 | /* If these relocations were originally of the REL variety, |
9041 | we must pull the addend out of the field that will be | |
9042 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
9043 | RELA relocation. */ |
9044 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
9045 | relocs, rel)) | |
b49e97c9 | 9046 | { |
b34976b6 | 9047 | rela_relocation_p = FALSE; |
c224138d RS |
9048 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
9049 | howto, contents); | |
738e5348 RS |
9050 | if (hi16_reloc_p (r_type) |
9051 | || (got16_reloc_p (r_type) | |
b49e97c9 | 9052 | && mips_elf_local_relocation_p (input_bfd, rel, |
b34976b6 | 9053 | local_sections, FALSE))) |
b49e97c9 | 9054 | { |
c224138d RS |
9055 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
9056 | contents, &addend)) | |
749b8d9d | 9057 | { |
749b8d9d L |
9058 | if (h) |
9059 | name = h->root.root.string; | |
9060 | else | |
9061 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
9062 | local_syms + r_symndx, | |
9063 | sec); | |
9064 | (*_bfd_error_handler) | |
9065 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
9066 | input_bfd, input_section, name, howto->name, | |
9067 | rel->r_offset); | |
749b8d9d | 9068 | } |
b49e97c9 | 9069 | } |
30ac9238 RS |
9070 | else |
9071 | addend <<= howto->rightshift; | |
b49e97c9 TS |
9072 | } |
9073 | else | |
9074 | addend = rel->r_addend; | |
81d43bff RS |
9075 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
9076 | local_syms, local_sections, rel); | |
b49e97c9 TS |
9077 | } |
9078 | ||
1049f94e | 9079 | if (info->relocatable) |
b49e97c9 | 9080 | { |
4a14403c | 9081 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
9082 | && bfd_big_endian (input_bfd)) |
9083 | rel->r_offset -= 4; | |
9084 | ||
81d43bff | 9085 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 9086 | { |
81d43bff | 9087 | addend += rel->r_addend; |
738e5348 | 9088 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
9089 | addend = mips_elf_high (addend); |
9090 | else if (r_type == R_MIPS_HIGHER) | |
9091 | addend = mips_elf_higher (addend); | |
9092 | else if (r_type == R_MIPS_HIGHEST) | |
9093 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
9094 | else |
9095 | addend >>= howto->rightshift; | |
b49e97c9 | 9096 | |
30ac9238 RS |
9097 | /* We use the source mask, rather than the destination |
9098 | mask because the place to which we are writing will be | |
9099 | source of the addend in the final link. */ | |
b49e97c9 TS |
9100 | addend &= howto->src_mask; |
9101 | ||
5a659663 | 9102 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9103 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9104 | ABI. Here, we need to update the addend. It would be | |
9105 | possible to get away with just using the R_MIPS_32 reloc | |
9106 | but for endianness. */ | |
9107 | { | |
9108 | bfd_vma sign_bits; | |
9109 | bfd_vma low_bits; | |
9110 | bfd_vma high_bits; | |
9111 | ||
9112 | if (addend & ((bfd_vma) 1 << 31)) | |
9113 | #ifdef BFD64 | |
9114 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9115 | #else | |
9116 | sign_bits = -1; | |
9117 | #endif | |
9118 | else | |
9119 | sign_bits = 0; | |
9120 | ||
9121 | /* If we don't know that we have a 64-bit type, | |
9122 | do two separate stores. */ | |
9123 | if (bfd_big_endian (input_bfd)) | |
9124 | { | |
9125 | /* Store the sign-bits (which are most significant) | |
9126 | first. */ | |
9127 | low_bits = sign_bits; | |
9128 | high_bits = addend; | |
9129 | } | |
9130 | else | |
9131 | { | |
9132 | low_bits = addend; | |
9133 | high_bits = sign_bits; | |
9134 | } | |
9135 | bfd_put_32 (input_bfd, low_bits, | |
9136 | contents + rel->r_offset); | |
9137 | bfd_put_32 (input_bfd, high_bits, | |
9138 | contents + rel->r_offset + 4); | |
9139 | continue; | |
9140 | } | |
9141 | ||
9142 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
9143 | input_bfd, input_section, | |
b34976b6 AM |
9144 | contents, FALSE)) |
9145 | return FALSE; | |
b49e97c9 TS |
9146 | } |
9147 | ||
9148 | /* Go on to the next relocation. */ | |
9149 | continue; | |
9150 | } | |
9151 | ||
9152 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
9153 | relocations for the same offset. In that case we are | |
9154 | supposed to treat the output of each relocation as the addend | |
9155 | for the next. */ | |
9156 | if (rel + 1 < relend | |
9157 | && rel->r_offset == rel[1].r_offset | |
9158 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 9159 | use_saved_addend_p = TRUE; |
b49e97c9 | 9160 | else |
b34976b6 | 9161 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
9162 | |
9163 | /* Figure out what value we are supposed to relocate. */ | |
9164 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
9165 | input_section, info, rel, | |
9166 | addend, howto, local_syms, | |
9167 | local_sections, &value, | |
38a7df63 | 9168 | &name, &cross_mode_jump_p, |
bce03d3d | 9169 | use_saved_addend_p)) |
b49e97c9 TS |
9170 | { |
9171 | case bfd_reloc_continue: | |
9172 | /* There's nothing to do. */ | |
9173 | continue; | |
9174 | ||
9175 | case bfd_reloc_undefined: | |
9176 | /* mips_elf_calculate_relocation already called the | |
9177 | undefined_symbol callback. There's no real point in | |
9178 | trying to perform the relocation at this point, so we | |
9179 | just skip ahead to the next relocation. */ | |
9180 | continue; | |
9181 | ||
9182 | case bfd_reloc_notsupported: | |
9183 | msg = _("internal error: unsupported relocation error"); | |
9184 | info->callbacks->warning | |
9185 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 9186 | return FALSE; |
b49e97c9 TS |
9187 | |
9188 | case bfd_reloc_overflow: | |
9189 | if (use_saved_addend_p) | |
9190 | /* Ignore overflow until we reach the last relocation for | |
9191 | a given location. */ | |
9192 | ; | |
9193 | else | |
9194 | { | |
0e53d9da AN |
9195 | struct mips_elf_link_hash_table *htab; |
9196 | ||
9197 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9198 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9199 | BFD_ASSERT (name != NULL); |
0e53d9da AN |
9200 | if (!htab->small_data_overflow_reported |
9201 | && (howto->type == R_MIPS_GPREL16 | |
9202 | || howto->type == R_MIPS_LITERAL)) | |
9203 | { | |
91d6fa6a NC |
9204 | msg = _("small-data section exceeds 64KB;" |
9205 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
9206 | |
9207 | htab->small_data_overflow_reported = TRUE; | |
9208 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
9209 | } | |
b49e97c9 | 9210 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 9211 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 9212 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9213 | return FALSE; |
b49e97c9 TS |
9214 | } |
9215 | break; | |
9216 | ||
9217 | case bfd_reloc_ok: | |
9218 | break; | |
9219 | ||
9220 | default: | |
9221 | abort (); | |
9222 | break; | |
9223 | } | |
9224 | ||
9225 | /* If we've got another relocation for the address, keep going | |
9226 | until we reach the last one. */ | |
9227 | if (use_saved_addend_p) | |
9228 | { | |
9229 | addend = value; | |
9230 | continue; | |
9231 | } | |
9232 | ||
4a14403c | 9233 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9234 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9235 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
9236 | that calculated the right value. Now, however, we | |
9237 | sign-extend the 32-bit result to 64-bits, and store it as a | |
9238 | 64-bit value. We are especially generous here in that we | |
9239 | go to extreme lengths to support this usage on systems with | |
9240 | only a 32-bit VMA. */ | |
9241 | { | |
9242 | bfd_vma sign_bits; | |
9243 | bfd_vma low_bits; | |
9244 | bfd_vma high_bits; | |
9245 | ||
9246 | if (value & ((bfd_vma) 1 << 31)) | |
9247 | #ifdef BFD64 | |
9248 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9249 | #else | |
9250 | sign_bits = -1; | |
9251 | #endif | |
9252 | else | |
9253 | sign_bits = 0; | |
9254 | ||
9255 | /* If we don't know that we have a 64-bit type, | |
9256 | do two separate stores. */ | |
9257 | if (bfd_big_endian (input_bfd)) | |
9258 | { | |
9259 | /* Undo what we did above. */ | |
9260 | rel->r_offset -= 4; | |
9261 | /* Store the sign-bits (which are most significant) | |
9262 | first. */ | |
9263 | low_bits = sign_bits; | |
9264 | high_bits = value; | |
9265 | } | |
9266 | else | |
9267 | { | |
9268 | low_bits = value; | |
9269 | high_bits = sign_bits; | |
9270 | } | |
9271 | bfd_put_32 (input_bfd, low_bits, | |
9272 | contents + rel->r_offset); | |
9273 | bfd_put_32 (input_bfd, high_bits, | |
9274 | contents + rel->r_offset + 4); | |
9275 | continue; | |
9276 | } | |
9277 | ||
9278 | /* Actually perform the relocation. */ | |
9279 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
9280 | input_bfd, input_section, | |
38a7df63 | 9281 | contents, cross_mode_jump_p)) |
b34976b6 | 9282 | return FALSE; |
b49e97c9 TS |
9283 | } |
9284 | ||
b34976b6 | 9285 | return TRUE; |
b49e97c9 TS |
9286 | } |
9287 | \f | |
861fb55a DJ |
9288 | /* A function that iterates over each entry in la25_stubs and fills |
9289 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
9290 | ||
9291 | static int | |
9292 | mips_elf_create_la25_stub (void **slot, void *data) | |
9293 | { | |
9294 | struct mips_htab_traverse_info *hti; | |
9295 | struct mips_elf_link_hash_table *htab; | |
9296 | struct mips_elf_la25_stub *stub; | |
9297 | asection *s; | |
9298 | bfd_byte *loc; | |
9299 | bfd_vma offset, target, target_high, target_low; | |
9300 | ||
9301 | stub = (struct mips_elf_la25_stub *) *slot; | |
9302 | hti = (struct mips_htab_traverse_info *) data; | |
9303 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 9304 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
9305 | |
9306 | /* Create the section contents, if we haven't already. */ | |
9307 | s = stub->stub_section; | |
9308 | loc = s->contents; | |
9309 | if (loc == NULL) | |
9310 | { | |
9311 | loc = bfd_malloc (s->size); | |
9312 | if (loc == NULL) | |
9313 | { | |
9314 | hti->error = TRUE; | |
9315 | return FALSE; | |
9316 | } | |
9317 | s->contents = loc; | |
9318 | } | |
9319 | ||
9320 | /* Work out where in the section this stub should go. */ | |
9321 | offset = stub->offset; | |
9322 | ||
9323 | /* Work out the target address. */ | |
9324 | target = (stub->h->root.root.u.def.section->output_section->vma | |
9325 | + stub->h->root.root.u.def.section->output_offset | |
9326 | + stub->h->root.root.u.def.value); | |
9327 | target_high = ((target + 0x8000) >> 16) & 0xffff; | |
9328 | target_low = (target & 0xffff); | |
9329 | ||
9330 | if (stub->stub_section != htab->strampoline) | |
9331 | { | |
9332 | /* This is a simple LUI/ADIDU stub. Zero out the beginning | |
9333 | of the section and write the two instructions at the end. */ | |
9334 | memset (loc, 0, offset); | |
9335 | loc += offset; | |
9336 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9337 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
9338 | } | |
9339 | else | |
9340 | { | |
9341 | /* This is trampoline. */ | |
9342 | loc += offset; | |
9343 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9344 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
9345 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
9346 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
9347 | } | |
9348 | return TRUE; | |
9349 | } | |
9350 | ||
b49e97c9 TS |
9351 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9352 | adjust it appropriately now. */ | |
9353 | ||
9354 | static void | |
9719ad41 RS |
9355 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
9356 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9357 | { |
9358 | /* The linker script takes care of providing names and values for | |
9359 | these, but we must place them into the right sections. */ | |
9360 | static const char* const text_section_symbols[] = { | |
9361 | "_ftext", | |
9362 | "_etext", | |
9363 | "__dso_displacement", | |
9364 | "__elf_header", | |
9365 | "__program_header_table", | |
9366 | NULL | |
9367 | }; | |
9368 | ||
9369 | static const char* const data_section_symbols[] = { | |
9370 | "_fdata", | |
9371 | "_edata", | |
9372 | "_end", | |
9373 | "_fbss", | |
9374 | NULL | |
9375 | }; | |
9376 | ||
9377 | const char* const *p; | |
9378 | int i; | |
9379 | ||
9380 | for (i = 0; i < 2; ++i) | |
9381 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
9382 | *p; | |
9383 | ++p) | |
9384 | if (strcmp (*p, name) == 0) | |
9385 | { | |
9386 | /* All of these symbols are given type STT_SECTION by the | |
9387 | IRIX6 linker. */ | |
9388 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 9389 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
9390 | |
9391 | /* The IRIX linker puts these symbols in special sections. */ | |
9392 | if (i == 0) | |
9393 | sym->st_shndx = SHN_MIPS_TEXT; | |
9394 | else | |
9395 | sym->st_shndx = SHN_MIPS_DATA; | |
9396 | ||
9397 | break; | |
9398 | } | |
9399 | } | |
9400 | ||
9401 | /* Finish up dynamic symbol handling. We set the contents of various | |
9402 | dynamic sections here. */ | |
9403 | ||
b34976b6 | 9404 | bfd_boolean |
9719ad41 RS |
9405 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
9406 | struct bfd_link_info *info, | |
9407 | struct elf_link_hash_entry *h, | |
9408 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9409 | { |
9410 | bfd *dynobj; | |
b49e97c9 | 9411 | asection *sgot; |
f4416af6 | 9412 | struct mips_got_info *g, *gg; |
b49e97c9 | 9413 | const char *name; |
3d6746ca | 9414 | int idx; |
5108fc1b | 9415 | struct mips_elf_link_hash_table *htab; |
738e5348 | 9416 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 9417 | |
5108fc1b | 9418 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9419 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9420 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 9421 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9422 | |
861fb55a DJ |
9423 | BFD_ASSERT (!htab->is_vxworks); |
9424 | ||
9425 | if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub) | |
9426 | { | |
9427 | /* We've decided to create a PLT entry for this symbol. */ | |
9428 | bfd_byte *loc; | |
9429 | bfd_vma header_address, plt_index, got_address; | |
9430 | bfd_vma got_address_high, got_address_low, load; | |
9431 | const bfd_vma *plt_entry; | |
9432 | ||
9433 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9434 | BFD_ASSERT (h->dynindx != -1); | |
9435 | BFD_ASSERT (htab->splt != NULL); | |
9436 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9437 | BFD_ASSERT (!h->def_regular); | |
9438 | ||
9439 | /* Calculate the address of the PLT header. */ | |
9440 | header_address = (htab->splt->output_section->vma | |
9441 | + htab->splt->output_offset); | |
9442 | ||
9443 | /* Calculate the index of the entry. */ | |
9444 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9445 | / htab->plt_entry_size); | |
9446 | ||
9447 | /* Calculate the address of the .got.plt entry. */ | |
9448 | got_address = (htab->sgotplt->output_section->vma | |
9449 | + htab->sgotplt->output_offset | |
9450 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9451 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9452 | got_address_low = got_address & 0xffff; | |
9453 | ||
9454 | /* Initially point the .got.plt entry at the PLT header. */ | |
9455 | loc = (htab->sgotplt->contents | |
9456 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9457 | if (ABI_64_P (output_bfd)) | |
9458 | bfd_put_64 (output_bfd, header_address, loc); | |
9459 | else | |
9460 | bfd_put_32 (output_bfd, header_address, loc); | |
9461 | ||
9462 | /* Find out where the .plt entry should go. */ | |
9463 | loc = htab->splt->contents + h->plt.offset; | |
9464 | ||
9465 | /* Pick the load opcode. */ | |
9466 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
9467 | ||
9468 | /* Fill in the PLT entry itself. */ | |
9469 | plt_entry = mips_exec_plt_entry; | |
9470 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); | |
9471 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4); | |
6d30f5b2 NC |
9472 | |
9473 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
9474 | { | |
9475 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
9476 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9477 | } | |
9478 | else | |
9479 | { | |
9480 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
9481 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12); | |
9482 | } | |
861fb55a DJ |
9483 | |
9484 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9485 | mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt, | |
9486 | plt_index, h->dynindx, | |
9487 | R_MIPS_JUMP_SLOT, got_address); | |
9488 | ||
9489 | /* We distinguish between PLT entries and lazy-binding stubs by | |
9490 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
9491 | flag and leave the value if there are any relocations in the | |
9492 | binary where pointer equality matters. */ | |
9493 | sym->st_shndx = SHN_UNDEF; | |
9494 | if (h->pointer_equality_needed) | |
9495 | sym->st_other = STO_MIPS_PLT; | |
9496 | else | |
9497 | sym->st_value = 0; | |
9498 | } | |
9499 | else if (h->plt.offset != MINUS_ONE) | |
b49e97c9 | 9500 | { |
861fb55a | 9501 | /* We've decided to create a lazy-binding stub. */ |
5108fc1b | 9502 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
9503 | |
9504 | /* This symbol has a stub. Set it up. */ | |
9505 | ||
9506 | BFD_ASSERT (h->dynindx != -1); | |
9507 | ||
5108fc1b RS |
9508 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9509 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
9510 | |
9511 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
9512 | sign extension at runtime in the stub, resulting in a negative |
9513 | index value. */ | |
9514 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 9515 | return FALSE; |
b49e97c9 TS |
9516 | |
9517 | /* Fill the stub. */ | |
3d6746ca DD |
9518 | idx = 0; |
9519 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
9520 | idx += 4; | |
9521 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
9522 | idx += 4; | |
5108fc1b | 9523 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 9524 | { |
5108fc1b | 9525 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
9526 | stub + idx); |
9527 | idx += 4; | |
9528 | } | |
9529 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
9530 | idx += 4; | |
b49e97c9 | 9531 | |
3d6746ca DD |
9532 | /* If a large stub is not required and sign extension is not a |
9533 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
9534 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
9535 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
9536 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
9537 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
9538 | else | |
5108fc1b RS |
9539 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
9540 | stub + idx); | |
9541 | ||
4e41d0d7 RS |
9542 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
9543 | memcpy (htab->sstubs->contents + h->plt.offset, | |
9544 | stub, htab->function_stub_size); | |
b49e97c9 TS |
9545 | |
9546 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
9547 | only for the referenced symbol. */ | |
9548 | sym->st_shndx = SHN_UNDEF; | |
9549 | ||
9550 | /* The run-time linker uses the st_value field of the symbol | |
9551 | to reset the global offset table entry for this external | |
9552 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
9553 | sym->st_value = (htab->sstubs->output_section->vma |
9554 | + htab->sstubs->output_offset | |
c5ae1840 | 9555 | + h->plt.offset); |
b49e97c9 TS |
9556 | } |
9557 | ||
738e5348 RS |
9558 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
9559 | refer to the stub, since only the stub uses the standard calling | |
9560 | conventions. */ | |
9561 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
9562 | { | |
9563 | BFD_ASSERT (hmips->need_fn_stub); | |
9564 | sym->st_value = (hmips->fn_stub->output_section->vma | |
9565 | + hmips->fn_stub->output_offset); | |
9566 | sym->st_size = hmips->fn_stub->size; | |
9567 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
9568 | } | |
9569 | ||
b49e97c9 | 9570 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 9571 | || h->forced_local); |
b49e97c9 | 9572 | |
23cc69b6 | 9573 | sgot = htab->sgot; |
a8028dd0 | 9574 | g = htab->got_info; |
b49e97c9 TS |
9575 | BFD_ASSERT (g != NULL); |
9576 | ||
9577 | /* Run through the global symbol table, creating GOT entries for all | |
9578 | the symbols that need them. */ | |
9579 | if (g->global_gotsym != NULL | |
9580 | && h->dynindx >= g->global_gotsym->dynindx) | |
9581 | { | |
9582 | bfd_vma offset; | |
9583 | bfd_vma value; | |
9584 | ||
6eaa6adc | 9585 | value = sym->st_value; |
738e5348 RS |
9586 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, |
9587 | R_MIPS_GOT16, info); | |
b49e97c9 TS |
9588 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
9589 | } | |
9590 | ||
0f20cc35 | 9591 | if (g->next && h->dynindx != -1 && h->type != STT_TLS) |
f4416af6 AO |
9592 | { |
9593 | struct mips_got_entry e, *p; | |
0626d451 | 9594 | bfd_vma entry; |
f4416af6 | 9595 | bfd_vma offset; |
f4416af6 AO |
9596 | |
9597 | gg = g; | |
9598 | ||
9599 | e.abfd = output_bfd; | |
9600 | e.symndx = -1; | |
738e5348 | 9601 | e.d.h = hmips; |
0f20cc35 | 9602 | e.tls_type = 0; |
143d77c5 | 9603 | |
f4416af6 AO |
9604 | for (g = g->next; g->next != gg; g = g->next) |
9605 | { | |
9606 | if (g->got_entries | |
9607 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
9608 | &e))) | |
9609 | { | |
9610 | offset = p->gotidx; | |
0626d451 RS |
9611 | if (info->shared |
9612 | || (elf_hash_table (info)->dynamic_sections_created | |
9613 | && p->d.h != NULL | |
f5385ebf AM |
9614 | && p->d.h->root.def_dynamic |
9615 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
9616 | { |
9617 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
9618 | the various compatibility problems, it's easier to mock | |
9619 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
9620 | mips_elf_create_dynamic_relocation to calculate the | |
9621 | appropriate addend. */ | |
9622 | Elf_Internal_Rela rel[3]; | |
9623 | ||
9624 | memset (rel, 0, sizeof (rel)); | |
9625 | if (ABI_64_P (output_bfd)) | |
9626 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
9627 | else | |
9628 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
9629 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
9630 | ||
9631 | entry = 0; | |
9632 | if (! (mips_elf_create_dynamic_relocation | |
9633 | (output_bfd, info, rel, | |
9634 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
9635 | return FALSE; | |
9636 | } | |
9637 | else | |
9638 | entry = sym->st_value; | |
9639 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
9640 | } |
9641 | } | |
9642 | } | |
9643 | ||
b49e97c9 TS |
9644 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
9645 | name = h->root.root.string; | |
9646 | if (strcmp (name, "_DYNAMIC") == 0 | |
22edb2f1 | 9647 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
9648 | sym->st_shndx = SHN_ABS; |
9649 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
9650 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
9651 | { | |
9652 | sym->st_shndx = SHN_ABS; | |
9653 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9654 | sym->st_value = 1; | |
9655 | } | |
4a14403c | 9656 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9657 | { |
9658 | sym->st_shndx = SHN_ABS; | |
9659 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9660 | sym->st_value = elf_gp (output_bfd); | |
9661 | } | |
9662 | else if (SGI_COMPAT (output_bfd)) | |
9663 | { | |
9664 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
9665 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
9666 | { | |
9667 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9668 | sym->st_other = STO_PROTECTED; | |
9669 | sym->st_value = 0; | |
9670 | sym->st_shndx = SHN_MIPS_DATA; | |
9671 | } | |
9672 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
9673 | { | |
9674 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
9675 | sym->st_other = STO_PROTECTED; | |
9676 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
9677 | sym->st_shndx = SHN_ABS; | |
9678 | } | |
9679 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
9680 | { | |
9681 | if (h->type == STT_FUNC) | |
9682 | sym->st_shndx = SHN_MIPS_TEXT; | |
9683 | else if (h->type == STT_OBJECT) | |
9684 | sym->st_shndx = SHN_MIPS_DATA; | |
9685 | } | |
9686 | } | |
9687 | ||
861fb55a DJ |
9688 | /* Emit a copy reloc, if needed. */ |
9689 | if (h->needs_copy) | |
9690 | { | |
9691 | asection *s; | |
9692 | bfd_vma symval; | |
9693 | ||
9694 | BFD_ASSERT (h->dynindx != -1); | |
9695 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9696 | ||
9697 | s = mips_elf_rel_dyn_section (info, FALSE); | |
9698 | symval = (h->root.u.def.section->output_section->vma | |
9699 | + h->root.u.def.section->output_offset | |
9700 | + h->root.u.def.value); | |
9701 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
9702 | h->dynindx, R_MIPS_COPY, symval); | |
9703 | } | |
9704 | ||
b49e97c9 TS |
9705 | /* Handle the IRIX6-specific symbols. */ |
9706 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
9707 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
9708 | ||
9709 | if (! info->shared) | |
9710 | { | |
9711 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
9712 | && (strcmp (name, "__rld_map") == 0 | |
9713 | || strcmp (name, "__RLD_MAP") == 0)) | |
9714 | { | |
9715 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
9716 | BFD_ASSERT (s != NULL); | |
9717 | sym->st_value = s->output_section->vma + s->output_offset; | |
9719ad41 | 9718 | bfd_put_32 (output_bfd, 0, s->contents); |
b49e97c9 TS |
9719 | if (mips_elf_hash_table (info)->rld_value == 0) |
9720 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
9721 | } | |
9722 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
9723 | && strcmp (name, "__rld_obj_head") == 0) | |
9724 | { | |
9725 | /* IRIX6 does not use a .rld_map section. */ | |
9726 | if (IRIX_COMPAT (output_bfd) == ict_irix5 | |
9727 | || IRIX_COMPAT (output_bfd) == ict_none) | |
9728 | BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map") | |
9729 | != NULL); | |
9730 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
9731 | } | |
9732 | } | |
9733 | ||
738e5348 RS |
9734 | /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to |
9735 | treat MIPS16 symbols like any other. */ | |
30c09090 | 9736 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
9737 | { |
9738 | BFD_ASSERT (sym->st_value & 1); | |
9739 | sym->st_other -= STO_MIPS16; | |
9740 | } | |
b49e97c9 | 9741 | |
b34976b6 | 9742 | return TRUE; |
b49e97c9 TS |
9743 | } |
9744 | ||
0a44bf69 RS |
9745 | /* Likewise, for VxWorks. */ |
9746 | ||
9747 | bfd_boolean | |
9748 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
9749 | struct bfd_link_info *info, | |
9750 | struct elf_link_hash_entry *h, | |
9751 | Elf_Internal_Sym *sym) | |
9752 | { | |
9753 | bfd *dynobj; | |
9754 | asection *sgot; | |
9755 | struct mips_got_info *g; | |
9756 | struct mips_elf_link_hash_table *htab; | |
9757 | ||
9758 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9759 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
9760 | dynobj = elf_hash_table (info)->dynobj; |
9761 | ||
9762 | if (h->plt.offset != (bfd_vma) -1) | |
9763 | { | |
6d79d2ed | 9764 | bfd_byte *loc; |
0a44bf69 RS |
9765 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
9766 | Elf_Internal_Rela rel; | |
9767 | static const bfd_vma *plt_entry; | |
9768 | ||
9769 | BFD_ASSERT (h->dynindx != -1); | |
9770 | BFD_ASSERT (htab->splt != NULL); | |
9771 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9772 | ||
9773 | /* Calculate the address of the .plt entry. */ | |
9774 | plt_address = (htab->splt->output_section->vma | |
9775 | + htab->splt->output_offset | |
9776 | + h->plt.offset); | |
9777 | ||
9778 | /* Calculate the index of the entry. */ | |
9779 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9780 | / htab->plt_entry_size); | |
9781 | ||
9782 | /* Calculate the address of the .got.plt entry. */ | |
9783 | got_address = (htab->sgotplt->output_section->vma | |
9784 | + htab->sgotplt->output_offset | |
9785 | + plt_index * 4); | |
9786 | ||
9787 | /* Calculate the offset of the .got.plt entry from | |
9788 | _GLOBAL_OFFSET_TABLE_. */ | |
9789 | got_offset = mips_elf_gotplt_index (info, h); | |
9790 | ||
9791 | /* Calculate the offset for the branch at the start of the PLT | |
9792 | entry. The branch jumps to the beginning of .plt. */ | |
9793 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
9794 | ||
9795 | /* Fill in the initial value of the .got.plt entry. */ | |
9796 | bfd_put_32 (output_bfd, plt_address, | |
9797 | htab->sgotplt->contents + plt_index * 4); | |
9798 | ||
9799 | /* Find out where the .plt entry should go. */ | |
9800 | loc = htab->splt->contents + h->plt.offset; | |
9801 | ||
9802 | if (info->shared) | |
9803 | { | |
9804 | plt_entry = mips_vxworks_shared_plt_entry; | |
9805 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9806 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9807 | } | |
9808 | else | |
9809 | { | |
9810 | bfd_vma got_address_high, got_address_low; | |
9811 | ||
9812 | plt_entry = mips_vxworks_exec_plt_entry; | |
9813 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9814 | got_address_low = got_address & 0xffff; | |
9815 | ||
9816 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9817 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9818 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
9819 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
9820 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9821 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9822 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
9823 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
9824 | ||
9825 | loc = (htab->srelplt2->contents | |
9826 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
9827 | ||
9828 | /* Emit a relocation for the .got.plt entry. */ | |
9829 | rel.r_offset = got_address; | |
9830 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
9831 | rel.r_addend = h->plt.offset; | |
9832 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9833 | ||
9834 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
9835 | loc += sizeof (Elf32_External_Rela); | |
9836 | rel.r_offset = plt_address + 8; | |
9837 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9838 | rel.r_addend = got_offset; | |
9839 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9840 | ||
9841 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
9842 | loc += sizeof (Elf32_External_Rela); | |
9843 | rel.r_offset += 4; | |
9844 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9845 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9846 | } | |
9847 | ||
9848 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9849 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
9850 | rel.r_offset = got_address; | |
9851 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
9852 | rel.r_addend = 0; | |
9853 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9854 | ||
9855 | if (!h->def_regular) | |
9856 | sym->st_shndx = SHN_UNDEF; | |
9857 | } | |
9858 | ||
9859 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
9860 | ||
23cc69b6 | 9861 | sgot = htab->sgot; |
a8028dd0 | 9862 | g = htab->got_info; |
0a44bf69 RS |
9863 | BFD_ASSERT (g != NULL); |
9864 | ||
9865 | /* See if this symbol has an entry in the GOT. */ | |
9866 | if (g->global_gotsym != NULL | |
9867 | && h->dynindx >= g->global_gotsym->dynindx) | |
9868 | { | |
9869 | bfd_vma offset; | |
9870 | Elf_Internal_Rela outrel; | |
9871 | bfd_byte *loc; | |
9872 | asection *s; | |
9873 | ||
9874 | /* Install the symbol value in the GOT. */ | |
9875 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, | |
9876 | R_MIPS_GOT16, info); | |
9877 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); | |
9878 | ||
9879 | /* Add a dynamic relocation for it. */ | |
9880 | s = mips_elf_rel_dyn_section (info, FALSE); | |
9881 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
9882 | outrel.r_offset = (sgot->output_section->vma | |
9883 | + sgot->output_offset | |
9884 | + offset); | |
9885 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
9886 | outrel.r_addend = 0; | |
9887 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
9888 | } | |
9889 | ||
9890 | /* Emit a copy reloc, if needed. */ | |
9891 | if (h->needs_copy) | |
9892 | { | |
9893 | Elf_Internal_Rela rel; | |
9894 | ||
9895 | BFD_ASSERT (h->dynindx != -1); | |
9896 | ||
9897 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
9898 | + h->root.u.def.section->output_offset | |
9899 | + h->root.u.def.value); | |
9900 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
9901 | rel.r_addend = 0; | |
9902 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
9903 | htab->srelbss->contents | |
9904 | + (htab->srelbss->reloc_count | |
9905 | * sizeof (Elf32_External_Rela))); | |
9906 | ++htab->srelbss->reloc_count; | |
9907 | } | |
9908 | ||
9909 | /* If this is a mips16 symbol, force the value to be even. */ | |
30c09090 | 9910 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
0a44bf69 RS |
9911 | sym->st_value &= ~1; |
9912 | ||
9913 | return TRUE; | |
9914 | } | |
9915 | ||
861fb55a DJ |
9916 | /* Write out a plt0 entry to the beginning of .plt. */ |
9917 | ||
9918 | static void | |
9919 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9920 | { | |
9921 | bfd_byte *loc; | |
9922 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
9923 | static const bfd_vma *plt_entry; | |
9924 | struct mips_elf_link_hash_table *htab; | |
9925 | ||
9926 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9927 | BFD_ASSERT (htab != NULL); |
9928 | ||
861fb55a DJ |
9929 | if (ABI_64_P (output_bfd)) |
9930 | plt_entry = mips_n64_exec_plt0_entry; | |
9931 | else if (ABI_N32_P (output_bfd)) | |
9932 | plt_entry = mips_n32_exec_plt0_entry; | |
9933 | else | |
9934 | plt_entry = mips_o32_exec_plt0_entry; | |
9935 | ||
9936 | /* Calculate the value of .got.plt. */ | |
9937 | gotplt_value = (htab->sgotplt->output_section->vma | |
9938 | + htab->sgotplt->output_offset); | |
9939 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; | |
9940 | gotplt_value_low = gotplt_value & 0xffff; | |
9941 | ||
9942 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
9943 | not be loaded in two instructions. */ | |
9944 | BFD_ASSERT ((gotplt_value & ~(bfd_vma) 0x7fffffff) == 0 | |
9945 | || ~(gotplt_value | 0x7fffffff) == 0); | |
9946 | ||
9947 | /* Install the PLT header. */ | |
9948 | loc = htab->splt->contents; | |
9949 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
9950 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
9951 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
9952 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9953 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9954 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9955 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
9956 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
9957 | } | |
9958 | ||
0a44bf69 RS |
9959 | /* Install the PLT header for a VxWorks executable and finalize the |
9960 | contents of .rela.plt.unloaded. */ | |
9961 | ||
9962 | static void | |
9963 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9964 | { | |
9965 | Elf_Internal_Rela rela; | |
9966 | bfd_byte *loc; | |
9967 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
9968 | static const bfd_vma *plt_entry; | |
9969 | struct mips_elf_link_hash_table *htab; | |
9970 | ||
9971 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9972 | BFD_ASSERT (htab != NULL); |
9973 | ||
0a44bf69 RS |
9974 | plt_entry = mips_vxworks_exec_plt0_entry; |
9975 | ||
9976 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
9977 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
9978 | + htab->root.hgot->root.u.def.section->output_offset | |
9979 | + htab->root.hgot->root.u.def.value); | |
9980 | ||
9981 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
9982 | got_value_low = got_value & 0xffff; | |
9983 | ||
9984 | /* Calculate the address of the PLT header. */ | |
9985 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
9986 | ||
9987 | /* Install the PLT header. */ | |
9988 | loc = htab->splt->contents; | |
9989 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
9990 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
9991 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
9992 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9993 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9994 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9995 | ||
9996 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
9997 | loc = htab->srelplt2->contents; | |
9998 | rela.r_offset = plt_address; | |
9999 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10000 | rela.r_addend = 0; | |
10001 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10002 | loc += sizeof (Elf32_External_Rela); | |
10003 | ||
10004 | /* Output the relocation for the following addiu of | |
10005 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
10006 | rela.r_offset += 4; | |
10007 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10008 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10009 | loc += sizeof (Elf32_External_Rela); | |
10010 | ||
10011 | /* Fix up the remaining relocations. They may have the wrong | |
10012 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10013 | in which symbols were output. */ | |
10014 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10015 | { | |
10016 | Elf_Internal_Rela rel; | |
10017 | ||
10018 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10019 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10020 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10021 | loc += sizeof (Elf32_External_Rela); | |
10022 | ||
10023 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10024 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10025 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10026 | loc += sizeof (Elf32_External_Rela); | |
10027 | ||
10028 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10029 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10030 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10031 | loc += sizeof (Elf32_External_Rela); | |
10032 | } | |
10033 | } | |
10034 | ||
10035 | /* Install the PLT header for a VxWorks shared library. */ | |
10036 | ||
10037 | static void | |
10038 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10039 | { | |
10040 | unsigned int i; | |
10041 | struct mips_elf_link_hash_table *htab; | |
10042 | ||
10043 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10044 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
10045 | |
10046 | /* We just need to copy the entry byte-by-byte. */ | |
10047 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
10048 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
10049 | htab->splt->contents + i * 4); | |
10050 | } | |
10051 | ||
b49e97c9 TS |
10052 | /* Finish up the dynamic sections. */ |
10053 | ||
b34976b6 | 10054 | bfd_boolean |
9719ad41 RS |
10055 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
10056 | struct bfd_link_info *info) | |
b49e97c9 TS |
10057 | { |
10058 | bfd *dynobj; | |
10059 | asection *sdyn; | |
10060 | asection *sgot; | |
f4416af6 | 10061 | struct mips_got_info *gg, *g; |
0a44bf69 | 10062 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 10063 | |
0a44bf69 | 10064 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
10065 | BFD_ASSERT (htab != NULL); |
10066 | ||
b49e97c9 TS |
10067 | dynobj = elf_hash_table (info)->dynobj; |
10068 | ||
10069 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
10070 | ||
23cc69b6 RS |
10071 | sgot = htab->sgot; |
10072 | gg = htab->got_info; | |
b49e97c9 TS |
10073 | |
10074 | if (elf_hash_table (info)->dynamic_sections_created) | |
10075 | { | |
10076 | bfd_byte *b; | |
943284cc | 10077 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
10078 | |
10079 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
10080 | BFD_ASSERT (gg != NULL); |
10081 | ||
10082 | g = mips_elf_got_for_ibfd (gg, output_bfd); | |
b49e97c9 TS |
10083 | BFD_ASSERT (g != NULL); |
10084 | ||
10085 | for (b = sdyn->contents; | |
eea6121a | 10086 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
10087 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
10088 | { | |
10089 | Elf_Internal_Dyn dyn; | |
10090 | const char *name; | |
10091 | size_t elemsize; | |
10092 | asection *s; | |
b34976b6 | 10093 | bfd_boolean swap_out_p; |
b49e97c9 TS |
10094 | |
10095 | /* Read in the current dynamic entry. */ | |
10096 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10097 | ||
10098 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 10099 | swap_out_p = TRUE; |
b49e97c9 TS |
10100 | |
10101 | switch (dyn.d_tag) | |
10102 | { | |
10103 | case DT_RELENT: | |
b49e97c9 TS |
10104 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
10105 | break; | |
10106 | ||
0a44bf69 RS |
10107 | case DT_RELAENT: |
10108 | BFD_ASSERT (htab->is_vxworks); | |
10109 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
10110 | break; | |
10111 | ||
b49e97c9 TS |
10112 | case DT_STRSZ: |
10113 | /* Rewrite DT_STRSZ. */ | |
10114 | dyn.d_un.d_val = | |
10115 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
10116 | break; | |
10117 | ||
10118 | case DT_PLTGOT: | |
861fb55a DJ |
10119 | s = htab->sgot; |
10120 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10121 | break; | |
10122 | ||
10123 | case DT_MIPS_PLTGOT: | |
10124 | s = htab->sgotplt; | |
10125 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
b49e97c9 TS |
10126 | break; |
10127 | ||
10128 | case DT_MIPS_RLD_VERSION: | |
10129 | dyn.d_un.d_val = 1; /* XXX */ | |
10130 | break; | |
10131 | ||
10132 | case DT_MIPS_FLAGS: | |
10133 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
10134 | break; | |
10135 | ||
b49e97c9 | 10136 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
10137 | { |
10138 | time_t t; | |
10139 | time (&t); | |
10140 | dyn.d_un.d_val = t; | |
10141 | } | |
b49e97c9 TS |
10142 | break; |
10143 | ||
10144 | case DT_MIPS_ICHECKSUM: | |
10145 | /* XXX FIXME: */ | |
b34976b6 | 10146 | swap_out_p = FALSE; |
b49e97c9 TS |
10147 | break; |
10148 | ||
10149 | case DT_MIPS_IVERSION: | |
10150 | /* XXX FIXME: */ | |
b34976b6 | 10151 | swap_out_p = FALSE; |
b49e97c9 TS |
10152 | break; |
10153 | ||
10154 | case DT_MIPS_BASE_ADDRESS: | |
10155 | s = output_bfd->sections; | |
10156 | BFD_ASSERT (s != NULL); | |
10157 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
10158 | break; | |
10159 | ||
10160 | case DT_MIPS_LOCAL_GOTNO: | |
10161 | dyn.d_un.d_val = g->local_gotno; | |
10162 | break; | |
10163 | ||
10164 | case DT_MIPS_UNREFEXTNO: | |
10165 | /* The index into the dynamic symbol table which is the | |
10166 | entry of the first external symbol that is not | |
10167 | referenced within the same object. */ | |
10168 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
10169 | break; | |
10170 | ||
10171 | case DT_MIPS_GOTSYM: | |
f4416af6 | 10172 | if (gg->global_gotsym) |
b49e97c9 | 10173 | { |
f4416af6 | 10174 | dyn.d_un.d_val = gg->global_gotsym->dynindx; |
b49e97c9 TS |
10175 | break; |
10176 | } | |
10177 | /* In case if we don't have global got symbols we default | |
10178 | to setting DT_MIPS_GOTSYM to the same value as | |
10179 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
10180 | ||
10181 | case DT_MIPS_SYMTABNO: | |
10182 | name = ".dynsym"; | |
10183 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
10184 | s = bfd_get_section_by_name (output_bfd, name); | |
10185 | BFD_ASSERT (s != NULL); | |
10186 | ||
eea6121a | 10187 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
10188 | break; |
10189 | ||
10190 | case DT_MIPS_HIPAGENO: | |
861fb55a | 10191 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
10192 | break; |
10193 | ||
10194 | case DT_MIPS_RLD_MAP: | |
10195 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
10196 | break; | |
10197 | ||
10198 | case DT_MIPS_OPTIONS: | |
10199 | s = (bfd_get_section_by_name | |
10200 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
10201 | dyn.d_un.d_ptr = s->vma; | |
10202 | break; | |
10203 | ||
0a44bf69 RS |
10204 | case DT_RELASZ: |
10205 | BFD_ASSERT (htab->is_vxworks); | |
10206 | /* The count does not include the JUMP_SLOT relocations. */ | |
10207 | if (htab->srelplt) | |
10208 | dyn.d_un.d_val -= htab->srelplt->size; | |
10209 | break; | |
10210 | ||
10211 | case DT_PLTREL: | |
861fb55a DJ |
10212 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10213 | if (htab->is_vxworks) | |
10214 | dyn.d_un.d_val = DT_RELA; | |
10215 | else | |
10216 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
10217 | break; |
10218 | ||
10219 | case DT_PLTRELSZ: | |
861fb55a | 10220 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
0a44bf69 RS |
10221 | dyn.d_un.d_val = htab->srelplt->size; |
10222 | break; | |
10223 | ||
10224 | case DT_JMPREL: | |
861fb55a DJ |
10225 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10226 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma | |
0a44bf69 RS |
10227 | + htab->srelplt->output_offset); |
10228 | break; | |
10229 | ||
943284cc DJ |
10230 | case DT_TEXTREL: |
10231 | /* If we didn't need any text relocations after all, delete | |
10232 | the dynamic tag. */ | |
10233 | if (!(info->flags & DF_TEXTREL)) | |
10234 | { | |
10235 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10236 | swap_out_p = FALSE; | |
10237 | } | |
10238 | break; | |
10239 | ||
10240 | case DT_FLAGS: | |
10241 | /* If we didn't need any text relocations after all, clear | |
10242 | DF_TEXTREL from DT_FLAGS. */ | |
10243 | if (!(info->flags & DF_TEXTREL)) | |
10244 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
10245 | else | |
10246 | swap_out_p = FALSE; | |
10247 | break; | |
10248 | ||
b49e97c9 | 10249 | default: |
b34976b6 | 10250 | swap_out_p = FALSE; |
7a2b07ff NS |
10251 | if (htab->is_vxworks |
10252 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10253 | swap_out_p = TRUE; | |
b49e97c9 TS |
10254 | break; |
10255 | } | |
10256 | ||
943284cc | 10257 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 10258 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
10259 | (dynobj, &dyn, b - dyn_skipped); |
10260 | ||
10261 | if (dyn_to_skip) | |
10262 | { | |
10263 | dyn_skipped += dyn_to_skip; | |
10264 | dyn_to_skip = 0; | |
10265 | } | |
b49e97c9 | 10266 | } |
943284cc DJ |
10267 | |
10268 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
10269 | if (dyn_skipped > 0) | |
10270 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
10271 | } |
10272 | ||
b55fd4d4 DJ |
10273 | if (sgot != NULL && sgot->size > 0 |
10274 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 10275 | { |
0a44bf69 RS |
10276 | if (htab->is_vxworks) |
10277 | { | |
10278 | /* The first entry of the global offset table points to the | |
10279 | ".dynamic" section. The second is initialized by the | |
10280 | loader and contains the shared library identifier. | |
10281 | The third is also initialized by the loader and points | |
10282 | to the lazy resolution stub. */ | |
10283 | MIPS_ELF_PUT_WORD (output_bfd, | |
10284 | sdyn->output_offset + sdyn->output_section->vma, | |
10285 | sgot->contents); | |
10286 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10287 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
10288 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10289 | sgot->contents | |
10290 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
10291 | } | |
10292 | else | |
10293 | { | |
10294 | /* The first entry of the global offset table will be filled at | |
10295 | runtime. The second entry will be used by some runtime loaders. | |
10296 | This isn't the case of IRIX rld. */ | |
10297 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 10298 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
10299 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
10300 | } | |
b49e97c9 | 10301 | |
54938e2a TS |
10302 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
10303 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
10304 | } | |
b49e97c9 | 10305 | |
f4416af6 AO |
10306 | /* Generate dynamic relocations for the non-primary gots. */ |
10307 | if (gg != NULL && gg->next) | |
10308 | { | |
10309 | Elf_Internal_Rela rel[3]; | |
10310 | bfd_vma addend = 0; | |
10311 | ||
10312 | memset (rel, 0, sizeof (rel)); | |
10313 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
10314 | ||
10315 | for (g = gg->next; g->next != gg; g = g->next) | |
10316 | { | |
91d6fa6a | 10317 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 10318 | + g->next->tls_gotno; |
f4416af6 | 10319 | |
9719ad41 | 10320 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 10321 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
10322 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
10323 | sgot->contents | |
91d6fa6a | 10324 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 AO |
10325 | |
10326 | if (! info->shared) | |
10327 | continue; | |
10328 | ||
91d6fa6a | 10329 | while (got_index < g->assigned_gotno) |
f4416af6 AO |
10330 | { |
10331 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
91d6fa6a | 10332 | = got_index++ * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
10333 | if (!(mips_elf_create_dynamic_relocation |
10334 | (output_bfd, info, rel, NULL, | |
10335 | bfd_abs_section_ptr, | |
10336 | 0, &addend, sgot))) | |
10337 | return FALSE; | |
10338 | BFD_ASSERT (addend == 0); | |
10339 | } | |
10340 | } | |
10341 | } | |
10342 | ||
3133ddbf DJ |
10343 | /* The generation of dynamic relocations for the non-primary gots |
10344 | adds more dynamic relocations. We cannot count them until | |
10345 | here. */ | |
10346 | ||
10347 | if (elf_hash_table (info)->dynamic_sections_created) | |
10348 | { | |
10349 | bfd_byte *b; | |
10350 | bfd_boolean swap_out_p; | |
10351 | ||
10352 | BFD_ASSERT (sdyn != NULL); | |
10353 | ||
10354 | for (b = sdyn->contents; | |
10355 | b < sdyn->contents + sdyn->size; | |
10356 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
10357 | { | |
10358 | Elf_Internal_Dyn dyn; | |
10359 | asection *s; | |
10360 | ||
10361 | /* Read in the current dynamic entry. */ | |
10362 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10363 | ||
10364 | /* Assume that we're going to modify it and write it out. */ | |
10365 | swap_out_p = TRUE; | |
10366 | ||
10367 | switch (dyn.d_tag) | |
10368 | { | |
10369 | case DT_RELSZ: | |
10370 | /* Reduce DT_RELSZ to account for any relocations we | |
10371 | decided not to make. This is for the n64 irix rld, | |
10372 | which doesn't seem to apply any relocations if there | |
10373 | are trailing null entries. */ | |
0a44bf69 | 10374 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
10375 | dyn.d_un.d_val = (s->reloc_count |
10376 | * (ABI_64_P (output_bfd) | |
10377 | ? sizeof (Elf64_Mips_External_Rel) | |
10378 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
10379 | /* Adjust the section size too. Tools like the prelinker |
10380 | can reasonably expect the values to the same. */ | |
10381 | elf_section_data (s->output_section)->this_hdr.sh_size | |
10382 | = dyn.d_un.d_val; | |
3133ddbf DJ |
10383 | break; |
10384 | ||
10385 | default: | |
10386 | swap_out_p = FALSE; | |
10387 | break; | |
10388 | } | |
10389 | ||
10390 | if (swap_out_p) | |
10391 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
10392 | (dynobj, &dyn, b); | |
10393 | } | |
10394 | } | |
10395 | ||
b49e97c9 | 10396 | { |
b49e97c9 TS |
10397 | asection *s; |
10398 | Elf32_compact_rel cpt; | |
10399 | ||
b49e97c9 TS |
10400 | if (SGI_COMPAT (output_bfd)) |
10401 | { | |
10402 | /* Write .compact_rel section out. */ | |
10403 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
10404 | if (s != NULL) | |
10405 | { | |
10406 | cpt.id1 = 1; | |
10407 | cpt.num = s->reloc_count; | |
10408 | cpt.id2 = 2; | |
10409 | cpt.offset = (s->output_section->filepos | |
10410 | + sizeof (Elf32_External_compact_rel)); | |
10411 | cpt.reserved0 = 0; | |
10412 | cpt.reserved1 = 0; | |
10413 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
10414 | ((Elf32_External_compact_rel *) | |
10415 | s->contents)); | |
10416 | ||
10417 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 10418 | if (htab->sstubs != NULL) |
b49e97c9 TS |
10419 | { |
10420 | file_ptr dummy_offset; | |
10421 | ||
4e41d0d7 RS |
10422 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
10423 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
10424 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 10425 | htab->function_stub_size); |
b49e97c9 TS |
10426 | } |
10427 | } | |
10428 | } | |
10429 | ||
0a44bf69 RS |
10430 | /* The psABI says that the dynamic relocations must be sorted in |
10431 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
10432 | this, and because the code below handles REL rather than RELA | |
10433 | relocations, using it for VxWorks would be outright harmful. */ | |
10434 | if (!htab->is_vxworks) | |
b49e97c9 | 10435 | { |
0a44bf69 RS |
10436 | s = mips_elf_rel_dyn_section (info, FALSE); |
10437 | if (s != NULL | |
10438 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
10439 | { | |
10440 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 10441 | |
0a44bf69 RS |
10442 | if (ABI_64_P (output_bfd)) |
10443 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
10444 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
10445 | sort_dynamic_relocs_64); | |
10446 | else | |
10447 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
10448 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
10449 | sort_dynamic_relocs); | |
10450 | } | |
b49e97c9 | 10451 | } |
b49e97c9 TS |
10452 | } |
10453 | ||
861fb55a | 10454 | if (htab->splt && htab->splt->size > 0) |
0a44bf69 | 10455 | { |
861fb55a DJ |
10456 | if (htab->is_vxworks) |
10457 | { | |
10458 | if (info->shared) | |
10459 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
10460 | else | |
10461 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
10462 | } | |
0a44bf69 | 10463 | else |
861fb55a DJ |
10464 | { |
10465 | BFD_ASSERT (!info->shared); | |
10466 | mips_finish_exec_plt (output_bfd, info); | |
10467 | } | |
0a44bf69 | 10468 | } |
b34976b6 | 10469 | return TRUE; |
b49e97c9 TS |
10470 | } |
10471 | ||
b49e97c9 | 10472 | |
64543e1a RS |
10473 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
10474 | ||
10475 | static void | |
9719ad41 | 10476 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 10477 | { |
64543e1a | 10478 | flagword val; |
b49e97c9 TS |
10479 | |
10480 | switch (bfd_get_mach (abfd)) | |
10481 | { | |
10482 | default: | |
10483 | case bfd_mach_mips3000: | |
10484 | val = E_MIPS_ARCH_1; | |
10485 | break; | |
10486 | ||
10487 | case bfd_mach_mips3900: | |
10488 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
10489 | break; | |
10490 | ||
10491 | case bfd_mach_mips6000: | |
10492 | val = E_MIPS_ARCH_2; | |
10493 | break; | |
10494 | ||
10495 | case bfd_mach_mips4000: | |
10496 | case bfd_mach_mips4300: | |
10497 | case bfd_mach_mips4400: | |
10498 | case bfd_mach_mips4600: | |
10499 | val = E_MIPS_ARCH_3; | |
10500 | break; | |
10501 | ||
10502 | case bfd_mach_mips4010: | |
10503 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
10504 | break; | |
10505 | ||
10506 | case bfd_mach_mips4100: | |
10507 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
10508 | break; | |
10509 | ||
10510 | case bfd_mach_mips4111: | |
10511 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
10512 | break; | |
10513 | ||
00707a0e RS |
10514 | case bfd_mach_mips4120: |
10515 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
10516 | break; | |
10517 | ||
b49e97c9 TS |
10518 | case bfd_mach_mips4650: |
10519 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
10520 | break; | |
10521 | ||
00707a0e RS |
10522 | case bfd_mach_mips5400: |
10523 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
10524 | break; | |
10525 | ||
10526 | case bfd_mach_mips5500: | |
10527 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
10528 | break; | |
10529 | ||
0d2e43ed ILT |
10530 | case bfd_mach_mips9000: |
10531 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
10532 | break; | |
10533 | ||
b49e97c9 | 10534 | case bfd_mach_mips5000: |
5a7ea749 | 10535 | case bfd_mach_mips7000: |
b49e97c9 TS |
10536 | case bfd_mach_mips8000: |
10537 | case bfd_mach_mips10000: | |
10538 | case bfd_mach_mips12000: | |
3aa3176b TS |
10539 | case bfd_mach_mips14000: |
10540 | case bfd_mach_mips16000: | |
b49e97c9 TS |
10541 | val = E_MIPS_ARCH_4; |
10542 | break; | |
10543 | ||
10544 | case bfd_mach_mips5: | |
10545 | val = E_MIPS_ARCH_5; | |
10546 | break; | |
10547 | ||
350cc38d MS |
10548 | case bfd_mach_mips_loongson_2e: |
10549 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
10550 | break; | |
10551 | ||
10552 | case bfd_mach_mips_loongson_2f: | |
10553 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
10554 | break; | |
10555 | ||
b49e97c9 TS |
10556 | case bfd_mach_mips_sb1: |
10557 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
10558 | break; | |
10559 | ||
6f179bd0 AN |
10560 | case bfd_mach_mips_octeon: |
10561 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; | |
10562 | break; | |
10563 | ||
52b6b6b9 JM |
10564 | case bfd_mach_mips_xlr: |
10565 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
10566 | break; | |
10567 | ||
b49e97c9 TS |
10568 | case bfd_mach_mipsisa32: |
10569 | val = E_MIPS_ARCH_32; | |
10570 | break; | |
10571 | ||
10572 | case bfd_mach_mipsisa64: | |
10573 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
10574 | break; |
10575 | ||
10576 | case bfd_mach_mipsisa32r2: | |
10577 | val = E_MIPS_ARCH_32R2; | |
10578 | break; | |
5f74bc13 CD |
10579 | |
10580 | case bfd_mach_mipsisa64r2: | |
10581 | val = E_MIPS_ARCH_64R2; | |
10582 | break; | |
b49e97c9 | 10583 | } |
b49e97c9 TS |
10584 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
10585 | elf_elfheader (abfd)->e_flags |= val; | |
10586 | ||
64543e1a RS |
10587 | } |
10588 | ||
10589 | ||
10590 | /* The final processing done just before writing out a MIPS ELF object | |
10591 | file. This gets the MIPS architecture right based on the machine | |
10592 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
10593 | ||
10594 | void | |
9719ad41 RS |
10595 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
10596 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
10597 | { |
10598 | unsigned int i; | |
10599 | Elf_Internal_Shdr **hdrpp; | |
10600 | const char *name; | |
10601 | asection *sec; | |
10602 | ||
10603 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
10604 | is nonzero. This is for compatibility with old objects, which used | |
10605 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
10606 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
10607 | mips_set_isa_flags (abfd); | |
10608 | ||
b49e97c9 TS |
10609 | /* Set the sh_info field for .gptab sections and other appropriate |
10610 | info for each special section. */ | |
10611 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
10612 | i < elf_numsections (abfd); | |
10613 | i++, hdrpp++) | |
10614 | { | |
10615 | switch ((*hdrpp)->sh_type) | |
10616 | { | |
10617 | case SHT_MIPS_MSYM: | |
10618 | case SHT_MIPS_LIBLIST: | |
10619 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
10620 | if (sec != NULL) | |
10621 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10622 | break; | |
10623 | ||
10624 | case SHT_MIPS_GPTAB: | |
10625 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10626 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10627 | BFD_ASSERT (name != NULL | |
0112cd26 | 10628 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
10629 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
10630 | BFD_ASSERT (sec != NULL); | |
10631 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
10632 | break; | |
10633 | ||
10634 | case SHT_MIPS_CONTENT: | |
10635 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10636 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10637 | BFD_ASSERT (name != NULL | |
0112cd26 | 10638 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
10639 | sec = bfd_get_section_by_name (abfd, |
10640 | name + sizeof ".MIPS.content" - 1); | |
10641 | BFD_ASSERT (sec != NULL); | |
10642 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10643 | break; | |
10644 | ||
10645 | case SHT_MIPS_SYMBOL_LIB: | |
10646 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
10647 | if (sec != NULL) | |
10648 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10649 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
10650 | if (sec != NULL) | |
10651 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
10652 | break; | |
10653 | ||
10654 | case SHT_MIPS_EVENTS: | |
10655 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
10656 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
10657 | BFD_ASSERT (name != NULL); | |
0112cd26 | 10658 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
10659 | sec = bfd_get_section_by_name (abfd, |
10660 | name + sizeof ".MIPS.events" - 1); | |
10661 | else | |
10662 | { | |
0112cd26 | 10663 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
10664 | sec = bfd_get_section_by_name (abfd, |
10665 | (name | |
10666 | + sizeof ".MIPS.post_rel" - 1)); | |
10667 | } | |
10668 | BFD_ASSERT (sec != NULL); | |
10669 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
10670 | break; | |
10671 | ||
10672 | } | |
10673 | } | |
10674 | } | |
10675 | \f | |
8dc1a139 | 10676 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
10677 | segments. */ |
10678 | ||
10679 | int | |
a6b96beb AM |
10680 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
10681 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
10682 | { |
10683 | asection *s; | |
10684 | int ret = 0; | |
10685 | ||
10686 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
10687 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
10688 | if (s && (s->flags & SEC_LOAD)) | |
10689 | ++ret; | |
10690 | ||
10691 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
10692 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
10693 | && bfd_get_section_by_name (abfd, | |
10694 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
10695 | ++ret; | |
10696 | ||
10697 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
10698 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
10699 | && bfd_get_section_by_name (abfd, ".dynamic") | |
10700 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
10701 | ++ret; | |
10702 | ||
98c904a8 RS |
10703 | /* Allocate a PT_NULL header in dynamic objects. See |
10704 | _bfd_mips_elf_modify_segment_map for details. */ | |
10705 | if (!SGI_COMPAT (abfd) | |
10706 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
10707 | ++ret; | |
10708 | ||
b49e97c9 TS |
10709 | return ret; |
10710 | } | |
10711 | ||
8dc1a139 | 10712 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 10713 | |
b34976b6 | 10714 | bfd_boolean |
9719ad41 | 10715 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 10716 | struct bfd_link_info *info) |
b49e97c9 TS |
10717 | { |
10718 | asection *s; | |
10719 | struct elf_segment_map *m, **pm; | |
10720 | bfd_size_type amt; | |
10721 | ||
10722 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
10723 | segment. */ | |
10724 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
10725 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
10726 | { | |
10727 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
10728 | if (m->p_type == PT_MIPS_REGINFO) | |
10729 | break; | |
10730 | if (m == NULL) | |
10731 | { | |
10732 | amt = sizeof *m; | |
9719ad41 | 10733 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 10734 | if (m == NULL) |
b34976b6 | 10735 | return FALSE; |
b49e97c9 TS |
10736 | |
10737 | m->p_type = PT_MIPS_REGINFO; | |
10738 | m->count = 1; | |
10739 | m->sections[0] = s; | |
10740 | ||
10741 | /* We want to put it after the PHDR and INTERP segments. */ | |
10742 | pm = &elf_tdata (abfd)->segment_map; | |
10743 | while (*pm != NULL | |
10744 | && ((*pm)->p_type == PT_PHDR | |
10745 | || (*pm)->p_type == PT_INTERP)) | |
10746 | pm = &(*pm)->next; | |
10747 | ||
10748 | m->next = *pm; | |
10749 | *pm = m; | |
10750 | } | |
10751 | } | |
10752 | ||
10753 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
10754 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 10755 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 10756 | table. */ |
c1fd6598 AO |
10757 | if (NEWABI_P (abfd) |
10758 | /* On non-IRIX6 new abi, we'll have already created a segment | |
10759 | for this section, so don't create another. I'm not sure this | |
10760 | is not also the case for IRIX 6, but I can't test it right | |
10761 | now. */ | |
10762 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
10763 | { |
10764 | for (s = abfd->sections; s; s = s->next) | |
10765 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
10766 | break; | |
10767 | ||
10768 | if (s) | |
10769 | { | |
10770 | struct elf_segment_map *options_segment; | |
10771 | ||
98a8deaf RS |
10772 | pm = &elf_tdata (abfd)->segment_map; |
10773 | while (*pm != NULL | |
10774 | && ((*pm)->p_type == PT_PHDR | |
10775 | || (*pm)->p_type == PT_INTERP)) | |
10776 | pm = &(*pm)->next; | |
b49e97c9 | 10777 | |
8ded5a0f AM |
10778 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
10779 | { | |
10780 | amt = sizeof (struct elf_segment_map); | |
10781 | options_segment = bfd_zalloc (abfd, amt); | |
10782 | options_segment->next = *pm; | |
10783 | options_segment->p_type = PT_MIPS_OPTIONS; | |
10784 | options_segment->p_flags = PF_R; | |
10785 | options_segment->p_flags_valid = TRUE; | |
10786 | options_segment->count = 1; | |
10787 | options_segment->sections[0] = s; | |
10788 | *pm = options_segment; | |
10789 | } | |
b49e97c9 TS |
10790 | } |
10791 | } | |
10792 | else | |
10793 | { | |
10794 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
10795 | { | |
10796 | /* If there are .dynamic and .mdebug sections, we make a room | |
10797 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
10798 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
10799 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
10800 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
10801 | { | |
10802 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
10803 | if (m->p_type == PT_MIPS_RTPROC) | |
10804 | break; | |
10805 | if (m == NULL) | |
10806 | { | |
10807 | amt = sizeof *m; | |
9719ad41 | 10808 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 10809 | if (m == NULL) |
b34976b6 | 10810 | return FALSE; |
b49e97c9 TS |
10811 | |
10812 | m->p_type = PT_MIPS_RTPROC; | |
10813 | ||
10814 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
10815 | if (s == NULL) | |
10816 | { | |
10817 | m->count = 0; | |
10818 | m->p_flags = 0; | |
10819 | m->p_flags_valid = 1; | |
10820 | } | |
10821 | else | |
10822 | { | |
10823 | m->count = 1; | |
10824 | m->sections[0] = s; | |
10825 | } | |
10826 | ||
10827 | /* We want to put it after the DYNAMIC segment. */ | |
10828 | pm = &elf_tdata (abfd)->segment_map; | |
10829 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
10830 | pm = &(*pm)->next; | |
10831 | if (*pm != NULL) | |
10832 | pm = &(*pm)->next; | |
10833 | ||
10834 | m->next = *pm; | |
10835 | *pm = m; | |
10836 | } | |
10837 | } | |
10838 | } | |
8dc1a139 | 10839 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
10840 | .dynstr, .dynsym, and .hash sections, and everything in |
10841 | between. */ | |
10842 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; | |
10843 | pm = &(*pm)->next) | |
10844 | if ((*pm)->p_type == PT_DYNAMIC) | |
10845 | break; | |
10846 | m = *pm; | |
10847 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
10848 | { | |
10849 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
10850 | segment are read, write and execute. We do that here since | |
10851 | the code in elf.c sets only the read permission. This matters | |
10852 | sometimes for the dynamic linker. */ | |
10853 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
10854 | { | |
10855 | m->p_flags = PF_R | PF_W | PF_X; | |
10856 | m->p_flags_valid = 1; | |
10857 | } | |
10858 | } | |
f6f62d6f RS |
10859 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
10860 | glibc's dynamic linker has traditionally derived the number of | |
10861 | tags from the p_filesz field, and sometimes allocates stack | |
10862 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
10863 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
10864 | other sections can also make life hard for the prelinker, | |
10865 | which might move one of the other sections to a different | |
10866 | PT_LOAD segment. */ | |
10867 | if (SGI_COMPAT (abfd) | |
10868 | && m != NULL | |
10869 | && m->count == 1 | |
10870 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
10871 | { |
10872 | static const char *sec_names[] = | |
10873 | { | |
10874 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
10875 | }; | |
10876 | bfd_vma low, high; | |
10877 | unsigned int i, c; | |
10878 | struct elf_segment_map *n; | |
10879 | ||
792b4a53 | 10880 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
10881 | high = 0; |
10882 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
10883 | { | |
10884 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
10885 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
10886 | { | |
10887 | bfd_size_type sz; | |
10888 | ||
10889 | if (low > s->vma) | |
10890 | low = s->vma; | |
eea6121a | 10891 | sz = s->size; |
b49e97c9 TS |
10892 | if (high < s->vma + sz) |
10893 | high = s->vma + sz; | |
10894 | } | |
10895 | } | |
10896 | ||
10897 | c = 0; | |
10898 | for (s = abfd->sections; s != NULL; s = s->next) | |
10899 | if ((s->flags & SEC_LOAD) != 0 | |
10900 | && s->vma >= low | |
eea6121a | 10901 | && s->vma + s->size <= high) |
b49e97c9 TS |
10902 | ++c; |
10903 | ||
10904 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 10905 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 10906 | if (n == NULL) |
b34976b6 | 10907 | return FALSE; |
b49e97c9 TS |
10908 | *n = *m; |
10909 | n->count = c; | |
10910 | ||
10911 | i = 0; | |
10912 | for (s = abfd->sections; s != NULL; s = s->next) | |
10913 | { | |
10914 | if ((s->flags & SEC_LOAD) != 0 | |
10915 | && s->vma >= low | |
eea6121a | 10916 | && s->vma + s->size <= high) |
b49e97c9 TS |
10917 | { |
10918 | n->sections[i] = s; | |
10919 | ++i; | |
10920 | } | |
10921 | } | |
10922 | ||
10923 | *pm = n; | |
10924 | } | |
10925 | } | |
10926 | ||
98c904a8 RS |
10927 | /* Allocate a spare program header in dynamic objects so that tools |
10928 | like the prelinker can add an extra PT_LOAD entry. | |
10929 | ||
10930 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
10931 | standard procedure is to move the first (read-only) sections into | |
10932 | the new (writable) segment. However, the MIPS ABI requires | |
10933 | .dynamic to be in a read-only segment, and the section will often | |
10934 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
10935 | ||
10936 | Although the prelinker could in principle move .dynamic to a | |
10937 | writable segment, it seems better to allocate a spare program | |
10938 | header instead, and avoid the need to move any sections. | |
10939 | There is a long tradition of allocating spare dynamic tags, | |
10940 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
10941 | extension. |
10942 | ||
10943 | If INFO is NULL, we may be copying an already prelinked binary | |
10944 | with objcopy or strip, so do not add this header. */ | |
10945 | if (info != NULL | |
10946 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
10947 | && bfd_get_section_by_name (abfd, ".dynamic")) |
10948 | { | |
10949 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
10950 | if ((*pm)->p_type == PT_NULL) | |
10951 | break; | |
10952 | if (*pm == NULL) | |
10953 | { | |
10954 | m = bfd_zalloc (abfd, sizeof (*m)); | |
10955 | if (m == NULL) | |
10956 | return FALSE; | |
10957 | ||
10958 | m->p_type = PT_NULL; | |
10959 | *pm = m; | |
10960 | } | |
10961 | } | |
10962 | ||
b34976b6 | 10963 | return TRUE; |
b49e97c9 TS |
10964 | } |
10965 | \f | |
10966 | /* Return the section that should be marked against GC for a given | |
10967 | relocation. */ | |
10968 | ||
10969 | asection * | |
9719ad41 | 10970 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 10971 | struct bfd_link_info *info, |
9719ad41 RS |
10972 | Elf_Internal_Rela *rel, |
10973 | struct elf_link_hash_entry *h, | |
10974 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10975 | { |
10976 | /* ??? Do mips16 stub sections need to be handled special? */ | |
10977 | ||
10978 | if (h != NULL) | |
07adf181 AM |
10979 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
10980 | { | |
10981 | case R_MIPS_GNU_VTINHERIT: | |
10982 | case R_MIPS_GNU_VTENTRY: | |
10983 | return NULL; | |
10984 | } | |
b49e97c9 | 10985 | |
07adf181 | 10986 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
10987 | } |
10988 | ||
10989 | /* Update the got entry reference counts for the section being removed. */ | |
10990 | ||
b34976b6 | 10991 | bfd_boolean |
9719ad41 RS |
10992 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
10993 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
10994 | asection *sec ATTRIBUTE_UNUSED, | |
10995 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
10996 | { |
10997 | #if 0 | |
10998 | Elf_Internal_Shdr *symtab_hdr; | |
10999 | struct elf_link_hash_entry **sym_hashes; | |
11000 | bfd_signed_vma *local_got_refcounts; | |
11001 | const Elf_Internal_Rela *rel, *relend; | |
11002 | unsigned long r_symndx; | |
11003 | struct elf_link_hash_entry *h; | |
11004 | ||
7dda2462 TG |
11005 | if (info->relocatable) |
11006 | return TRUE; | |
11007 | ||
b49e97c9 TS |
11008 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
11009 | sym_hashes = elf_sym_hashes (abfd); | |
11010 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
11011 | ||
11012 | relend = relocs + sec->reloc_count; | |
11013 | for (rel = relocs; rel < relend; rel++) | |
11014 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
11015 | { | |
738e5348 RS |
11016 | case R_MIPS16_GOT16: |
11017 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
11018 | case R_MIPS_GOT16: |
11019 | case R_MIPS_CALL16: | |
11020 | case R_MIPS_CALL_HI16: | |
11021 | case R_MIPS_CALL_LO16: | |
11022 | case R_MIPS_GOT_HI16: | |
11023 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
11024 | case R_MIPS_GOT_DISP: |
11025 | case R_MIPS_GOT_PAGE: | |
11026 | case R_MIPS_GOT_OFST: | |
b49e97c9 TS |
11027 | /* ??? It would seem that the existing MIPS code does no sort |
11028 | of reference counting or whatnot on its GOT and PLT entries, | |
11029 | so it is not possible to garbage collect them at this time. */ | |
11030 | break; | |
11031 | ||
11032 | default: | |
11033 | break; | |
11034 | } | |
11035 | #endif | |
11036 | ||
b34976b6 | 11037 | return TRUE; |
b49e97c9 TS |
11038 | } |
11039 | \f | |
11040 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
11041 | hiding the old indirect symbol. Process additional relocation | |
11042 | information. Also called for weakdefs, in which case we just let | |
11043 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
11044 | ||
11045 | void | |
fcfa13d2 | 11046 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
11047 | struct elf_link_hash_entry *dir, |
11048 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
11049 | { |
11050 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
11051 | ||
fcfa13d2 | 11052 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 11053 | |
861fb55a DJ |
11054 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
11055 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
11056 | /* Any absolute non-dynamic relocations against an indirect or weak | |
11057 | definition will be against the target symbol. */ | |
11058 | if (indmips->has_static_relocs) | |
11059 | dirmips->has_static_relocs = TRUE; | |
11060 | ||
b49e97c9 TS |
11061 | if (ind->root.type != bfd_link_hash_indirect) |
11062 | return; | |
11063 | ||
b49e97c9 TS |
11064 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
11065 | if (indmips->readonly_reloc) | |
b34976b6 | 11066 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 11067 | if (indmips->no_fn_stub) |
b34976b6 | 11068 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
11069 | if (indmips->fn_stub) |
11070 | { | |
11071 | dirmips->fn_stub = indmips->fn_stub; | |
11072 | indmips->fn_stub = NULL; | |
11073 | } | |
11074 | if (indmips->need_fn_stub) | |
11075 | { | |
11076 | dirmips->need_fn_stub = TRUE; | |
11077 | indmips->need_fn_stub = FALSE; | |
11078 | } | |
11079 | if (indmips->call_stub) | |
11080 | { | |
11081 | dirmips->call_stub = indmips->call_stub; | |
11082 | indmips->call_stub = NULL; | |
11083 | } | |
11084 | if (indmips->call_fp_stub) | |
11085 | { | |
11086 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
11087 | indmips->call_fp_stub = NULL; | |
11088 | } | |
634835ae RS |
11089 | if (indmips->global_got_area < dirmips->global_got_area) |
11090 | dirmips->global_got_area = indmips->global_got_area; | |
11091 | if (indmips->global_got_area < GGA_NONE) | |
11092 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
11093 | if (indmips->has_nonpic_branches) |
11094 | dirmips->has_nonpic_branches = TRUE; | |
0f20cc35 DJ |
11095 | |
11096 | if (dirmips->tls_type == 0) | |
11097 | dirmips->tls_type = indmips->tls_type; | |
b49e97c9 | 11098 | } |
b49e97c9 | 11099 | \f |
d01414a5 TS |
11100 | #define PDR_SIZE 32 |
11101 | ||
b34976b6 | 11102 | bfd_boolean |
9719ad41 RS |
11103 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
11104 | struct bfd_link_info *info) | |
d01414a5 TS |
11105 | { |
11106 | asection *o; | |
b34976b6 | 11107 | bfd_boolean ret = FALSE; |
d01414a5 TS |
11108 | unsigned char *tdata; |
11109 | size_t i, skip; | |
11110 | ||
11111 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
11112 | if (! o) | |
b34976b6 | 11113 | return FALSE; |
eea6121a | 11114 | if (o->size == 0) |
b34976b6 | 11115 | return FALSE; |
eea6121a | 11116 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 11117 | return FALSE; |
d01414a5 TS |
11118 | if (o->output_section != NULL |
11119 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 11120 | return FALSE; |
d01414a5 | 11121 | |
eea6121a | 11122 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 11123 | if (! tdata) |
b34976b6 | 11124 | return FALSE; |
d01414a5 | 11125 | |
9719ad41 | 11126 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 11127 | info->keep_memory); |
d01414a5 TS |
11128 | if (!cookie->rels) |
11129 | { | |
11130 | free (tdata); | |
b34976b6 | 11131 | return FALSE; |
d01414a5 TS |
11132 | } |
11133 | ||
11134 | cookie->rel = cookie->rels; | |
11135 | cookie->relend = cookie->rels + o->reloc_count; | |
11136 | ||
eea6121a | 11137 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 11138 | { |
c152c796 | 11139 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
11140 | { |
11141 | tdata[i] = 1; | |
11142 | skip ++; | |
11143 | } | |
11144 | } | |
11145 | ||
11146 | if (skip != 0) | |
11147 | { | |
f0abc2a1 | 11148 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 11149 | o->size -= skip * PDR_SIZE; |
b34976b6 | 11150 | ret = TRUE; |
d01414a5 TS |
11151 | } |
11152 | else | |
11153 | free (tdata); | |
11154 | ||
11155 | if (! info->keep_memory) | |
11156 | free (cookie->rels); | |
11157 | ||
11158 | return ret; | |
11159 | } | |
11160 | ||
b34976b6 | 11161 | bfd_boolean |
9719ad41 | 11162 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
11163 | { |
11164 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
11165 | return TRUE; |
11166 | return FALSE; | |
53bfd6b4 | 11167 | } |
d01414a5 | 11168 | |
b34976b6 | 11169 | bfd_boolean |
c7b8f16e JB |
11170 | _bfd_mips_elf_write_section (bfd *output_bfd, |
11171 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
11172 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
11173 | { |
11174 | bfd_byte *to, *from, *end; | |
11175 | int i; | |
11176 | ||
11177 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 11178 | return FALSE; |
d01414a5 | 11179 | |
f0abc2a1 | 11180 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 11181 | return FALSE; |
d01414a5 TS |
11182 | |
11183 | to = contents; | |
eea6121a | 11184 | end = contents + sec->size; |
d01414a5 TS |
11185 | for (from = contents, i = 0; |
11186 | from < end; | |
11187 | from += PDR_SIZE, i++) | |
11188 | { | |
f0abc2a1 | 11189 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
11190 | continue; |
11191 | if (to != from) | |
11192 | memcpy (to, from, PDR_SIZE); | |
11193 | to += PDR_SIZE; | |
11194 | } | |
11195 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 11196 | sec->output_offset, sec->size); |
b34976b6 | 11197 | return TRUE; |
d01414a5 | 11198 | } |
53bfd6b4 | 11199 | \f |
b49e97c9 TS |
11200 | /* MIPS ELF uses a special find_nearest_line routine in order the |
11201 | handle the ECOFF debugging information. */ | |
11202 | ||
11203 | struct mips_elf_find_line | |
11204 | { | |
11205 | struct ecoff_debug_info d; | |
11206 | struct ecoff_find_line i; | |
11207 | }; | |
11208 | ||
b34976b6 | 11209 | bfd_boolean |
9719ad41 RS |
11210 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
11211 | asymbol **symbols, bfd_vma offset, | |
11212 | const char **filename_ptr, | |
11213 | const char **functionname_ptr, | |
11214 | unsigned int *line_ptr) | |
b49e97c9 TS |
11215 | { |
11216 | asection *msec; | |
11217 | ||
11218 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
11219 | filename_ptr, functionname_ptr, | |
11220 | line_ptr)) | |
b34976b6 | 11221 | return TRUE; |
b49e97c9 TS |
11222 | |
11223 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
11224 | filename_ptr, functionname_ptr, | |
9719ad41 | 11225 | line_ptr, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 11226 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 11227 | return TRUE; |
b49e97c9 TS |
11228 | |
11229 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
11230 | if (msec != NULL) | |
11231 | { | |
11232 | flagword origflags; | |
11233 | struct mips_elf_find_line *fi; | |
11234 | const struct ecoff_debug_swap * const swap = | |
11235 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
11236 | ||
11237 | /* If we are called during a link, mips_elf_final_link may have | |
11238 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
11239 | if appropriate (which it normally will be). */ | |
11240 | origflags = msec->flags; | |
11241 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
11242 | msec->flags |= SEC_HAS_CONTENTS; | |
11243 | ||
11244 | fi = elf_tdata (abfd)->find_line_info; | |
11245 | if (fi == NULL) | |
11246 | { | |
11247 | bfd_size_type external_fdr_size; | |
11248 | char *fraw_src; | |
11249 | char *fraw_end; | |
11250 | struct fdr *fdr_ptr; | |
11251 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
11252 | ||
9719ad41 | 11253 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
11254 | if (fi == NULL) |
11255 | { | |
11256 | msec->flags = origflags; | |
b34976b6 | 11257 | return FALSE; |
b49e97c9 TS |
11258 | } |
11259 | ||
11260 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
11261 | { | |
11262 | msec->flags = origflags; | |
b34976b6 | 11263 | return FALSE; |
b49e97c9 TS |
11264 | } |
11265 | ||
11266 | /* Swap in the FDR information. */ | |
11267 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 11268 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11269 | if (fi->d.fdr == NULL) |
11270 | { | |
11271 | msec->flags = origflags; | |
b34976b6 | 11272 | return FALSE; |
b49e97c9 TS |
11273 | } |
11274 | external_fdr_size = swap->external_fdr_size; | |
11275 | fdr_ptr = fi->d.fdr; | |
11276 | fraw_src = (char *) fi->d.external_fdr; | |
11277 | fraw_end = (fraw_src | |
11278 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
11279 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 11280 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 TS |
11281 | |
11282 | elf_tdata (abfd)->find_line_info = fi; | |
11283 | ||
11284 | /* Note that we don't bother to ever free this information. | |
11285 | find_nearest_line is either called all the time, as in | |
11286 | objdump -l, so the information should be saved, or it is | |
11287 | rarely called, as in ld error messages, so the memory | |
11288 | wasted is unimportant. Still, it would probably be a | |
11289 | good idea for free_cached_info to throw it away. */ | |
11290 | } | |
11291 | ||
11292 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
11293 | &fi->i, filename_ptr, functionname_ptr, | |
11294 | line_ptr)) | |
11295 | { | |
11296 | msec->flags = origflags; | |
b34976b6 | 11297 | return TRUE; |
b49e97c9 TS |
11298 | } |
11299 | ||
11300 | msec->flags = origflags; | |
11301 | } | |
11302 | ||
11303 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
11304 | ||
11305 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
11306 | filename_ptr, functionname_ptr, | |
11307 | line_ptr); | |
11308 | } | |
4ab527b0 FF |
11309 | |
11310 | bfd_boolean | |
11311 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
11312 | const char **filename_ptr, | |
11313 | const char **functionname_ptr, | |
11314 | unsigned int *line_ptr) | |
11315 | { | |
11316 | bfd_boolean found; | |
11317 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11318 | functionname_ptr, line_ptr, | |
11319 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11320 | return found; | |
11321 | } | |
11322 | ||
b49e97c9 TS |
11323 | \f |
11324 | /* When are writing out the .options or .MIPS.options section, | |
11325 | remember the bytes we are writing out, so that we can install the | |
11326 | GP value in the section_processing routine. */ | |
11327 | ||
b34976b6 | 11328 | bfd_boolean |
9719ad41 RS |
11329 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
11330 | const void *location, | |
11331 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 11332 | { |
cc2e31b9 | 11333 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
11334 | { |
11335 | bfd_byte *c; | |
11336 | ||
11337 | if (elf_section_data (section) == NULL) | |
11338 | { | |
11339 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 11340 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 11341 | if (elf_section_data (section) == NULL) |
b34976b6 | 11342 | return FALSE; |
b49e97c9 | 11343 | } |
f0abc2a1 | 11344 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
11345 | if (c == NULL) |
11346 | { | |
eea6121a | 11347 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 11348 | if (c == NULL) |
b34976b6 | 11349 | return FALSE; |
f0abc2a1 | 11350 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
11351 | } |
11352 | ||
9719ad41 | 11353 | memcpy (c + offset, location, count); |
b49e97c9 TS |
11354 | } |
11355 | ||
11356 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
11357 | count); | |
11358 | } | |
11359 | ||
11360 | /* This is almost identical to bfd_generic_get_... except that some | |
11361 | MIPS relocations need to be handled specially. Sigh. */ | |
11362 | ||
11363 | bfd_byte * | |
9719ad41 RS |
11364 | _bfd_elf_mips_get_relocated_section_contents |
11365 | (bfd *abfd, | |
11366 | struct bfd_link_info *link_info, | |
11367 | struct bfd_link_order *link_order, | |
11368 | bfd_byte *data, | |
11369 | bfd_boolean relocatable, | |
11370 | asymbol **symbols) | |
b49e97c9 TS |
11371 | { |
11372 | /* Get enough memory to hold the stuff */ | |
11373 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
11374 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 11375 | bfd_size_type sz; |
b49e97c9 TS |
11376 | |
11377 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
11378 | arelent **reloc_vector = NULL; | |
11379 | long reloc_count; | |
11380 | ||
11381 | if (reloc_size < 0) | |
11382 | goto error_return; | |
11383 | ||
9719ad41 | 11384 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
11385 | if (reloc_vector == NULL && reloc_size != 0) |
11386 | goto error_return; | |
11387 | ||
11388 | /* read in the section */ | |
eea6121a AM |
11389 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
11390 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
11391 | goto error_return; |
11392 | ||
b49e97c9 TS |
11393 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
11394 | input_section, | |
11395 | reloc_vector, | |
11396 | symbols); | |
11397 | if (reloc_count < 0) | |
11398 | goto error_return; | |
11399 | ||
11400 | if (reloc_count > 0) | |
11401 | { | |
11402 | arelent **parent; | |
11403 | /* for mips */ | |
11404 | int gp_found; | |
11405 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
11406 | ||
11407 | { | |
11408 | struct bfd_hash_entry *h; | |
11409 | struct bfd_link_hash_entry *lh; | |
11410 | /* Skip all this stuff if we aren't mixing formats. */ | |
11411 | if (abfd && input_bfd | |
11412 | && abfd->xvec == input_bfd->xvec) | |
11413 | lh = 0; | |
11414 | else | |
11415 | { | |
b34976b6 | 11416 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
11417 | lh = (struct bfd_link_hash_entry *) h; |
11418 | } | |
11419 | lookup: | |
11420 | if (lh) | |
11421 | { | |
11422 | switch (lh->type) | |
11423 | { | |
11424 | case bfd_link_hash_undefined: | |
11425 | case bfd_link_hash_undefweak: | |
11426 | case bfd_link_hash_common: | |
11427 | gp_found = 0; | |
11428 | break; | |
11429 | case bfd_link_hash_defined: | |
11430 | case bfd_link_hash_defweak: | |
11431 | gp_found = 1; | |
11432 | gp = lh->u.def.value; | |
11433 | break; | |
11434 | case bfd_link_hash_indirect: | |
11435 | case bfd_link_hash_warning: | |
11436 | lh = lh->u.i.link; | |
11437 | /* @@FIXME ignoring warning for now */ | |
11438 | goto lookup; | |
11439 | case bfd_link_hash_new: | |
11440 | default: | |
11441 | abort (); | |
11442 | } | |
11443 | } | |
11444 | else | |
11445 | gp_found = 0; | |
11446 | } | |
11447 | /* end mips */ | |
9719ad41 | 11448 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 11449 | { |
9719ad41 | 11450 | char *error_message = NULL; |
b49e97c9 TS |
11451 | bfd_reloc_status_type r; |
11452 | ||
11453 | /* Specific to MIPS: Deal with relocation types that require | |
11454 | knowing the gp of the output bfd. */ | |
11455 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 11456 | |
8236346f EC |
11457 | /* If we've managed to find the gp and have a special |
11458 | function for the relocation then go ahead, else default | |
11459 | to the generic handling. */ | |
11460 | if (gp_found | |
11461 | && (*parent)->howto->special_function | |
11462 | == _bfd_mips_elf32_gprel16_reloc) | |
11463 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
11464 | input_section, relocatable, | |
11465 | data, gp); | |
11466 | else | |
86324f90 | 11467 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
11468 | input_section, |
11469 | relocatable ? abfd : NULL, | |
11470 | &error_message); | |
b49e97c9 | 11471 | |
1049f94e | 11472 | if (relocatable) |
b49e97c9 TS |
11473 | { |
11474 | asection *os = input_section->output_section; | |
11475 | ||
11476 | /* A partial link, so keep the relocs */ | |
11477 | os->orelocation[os->reloc_count] = *parent; | |
11478 | os->reloc_count++; | |
11479 | } | |
11480 | ||
11481 | if (r != bfd_reloc_ok) | |
11482 | { | |
11483 | switch (r) | |
11484 | { | |
11485 | case bfd_reloc_undefined: | |
11486 | if (!((*link_info->callbacks->undefined_symbol) | |
11487 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 11488 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
11489 | goto error_return; |
11490 | break; | |
11491 | case bfd_reloc_dangerous: | |
9719ad41 | 11492 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
11493 | if (!((*link_info->callbacks->reloc_dangerous) |
11494 | (link_info, error_message, input_bfd, input_section, | |
11495 | (*parent)->address))) | |
11496 | goto error_return; | |
11497 | break; | |
11498 | case bfd_reloc_overflow: | |
11499 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
11500 | (link_info, NULL, |
11501 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
11502 | (*parent)->howto->name, (*parent)->addend, |
11503 | input_bfd, input_section, (*parent)->address))) | |
11504 | goto error_return; | |
11505 | break; | |
11506 | case bfd_reloc_outofrange: | |
11507 | default: | |
11508 | abort (); | |
11509 | break; | |
11510 | } | |
11511 | ||
11512 | } | |
11513 | } | |
11514 | } | |
11515 | if (reloc_vector != NULL) | |
11516 | free (reloc_vector); | |
11517 | return data; | |
11518 | ||
11519 | error_return: | |
11520 | if (reloc_vector != NULL) | |
11521 | free (reloc_vector); | |
11522 | return NULL; | |
11523 | } | |
11524 | \f | |
d5eaccd7 RS |
11525 | /* Allocate ABFD's target-dependent data. */ |
11526 | ||
11527 | bfd_boolean | |
11528 | _bfd_mips_elf_mkobject (bfd *abfd) | |
11529 | { | |
11530 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), | |
4dfe6ac6 | 11531 | MIPS_ELF_DATA); |
d5eaccd7 RS |
11532 | } |
11533 | ||
b49e97c9 TS |
11534 | /* Create a MIPS ELF linker hash table. */ |
11535 | ||
11536 | struct bfd_link_hash_table * | |
9719ad41 | 11537 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
11538 | { |
11539 | struct mips_elf_link_hash_table *ret; | |
11540 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
11541 | ||
9719ad41 RS |
11542 | ret = bfd_malloc (amt); |
11543 | if (ret == NULL) | |
b49e97c9 TS |
11544 | return NULL; |
11545 | ||
66eb6687 AM |
11546 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
11547 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
11548 | sizeof (struct mips_elf_link_hash_entry), |
11549 | MIPS_ELF_DATA)) | |
b49e97c9 | 11550 | { |
e2d34d7d | 11551 | free (ret); |
b49e97c9 TS |
11552 | return NULL; |
11553 | } | |
11554 | ||
11555 | #if 0 | |
11556 | /* We no longer use this. */ | |
11557 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
11558 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
11559 | #endif | |
11560 | ret->procedure_count = 0; | |
11561 | ret->compact_rel_size = 0; | |
b34976b6 | 11562 | ret->use_rld_obj_head = FALSE; |
b49e97c9 | 11563 | ret->rld_value = 0; |
b34976b6 | 11564 | ret->mips16_stubs_seen = FALSE; |
861fb55a | 11565 | ret->use_plts_and_copy_relocs = FALSE; |
0a44bf69 | 11566 | ret->is_vxworks = FALSE; |
0e53d9da | 11567 | ret->small_data_overflow_reported = FALSE; |
0a44bf69 RS |
11568 | ret->srelbss = NULL; |
11569 | ret->sdynbss = NULL; | |
11570 | ret->srelplt = NULL; | |
11571 | ret->srelplt2 = NULL; | |
11572 | ret->sgotplt = NULL; | |
11573 | ret->splt = NULL; | |
4e41d0d7 | 11574 | ret->sstubs = NULL; |
a8028dd0 RS |
11575 | ret->sgot = NULL; |
11576 | ret->got_info = NULL; | |
0a44bf69 RS |
11577 | ret->plt_header_size = 0; |
11578 | ret->plt_entry_size = 0; | |
33bb52fb | 11579 | ret->lazy_stub_count = 0; |
5108fc1b | 11580 | ret->function_stub_size = 0; |
861fb55a DJ |
11581 | ret->strampoline = NULL; |
11582 | ret->la25_stubs = NULL; | |
11583 | ret->add_stub_section = NULL; | |
b49e97c9 TS |
11584 | |
11585 | return &ret->root.root; | |
11586 | } | |
0a44bf69 RS |
11587 | |
11588 | /* Likewise, but indicate that the target is VxWorks. */ | |
11589 | ||
11590 | struct bfd_link_hash_table * | |
11591 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
11592 | { | |
11593 | struct bfd_link_hash_table *ret; | |
11594 | ||
11595 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
11596 | if (ret) | |
11597 | { | |
11598 | struct mips_elf_link_hash_table *htab; | |
11599 | ||
11600 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
11601 | htab->use_plts_and_copy_relocs = TRUE; |
11602 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
11603 | } |
11604 | return ret; | |
11605 | } | |
861fb55a DJ |
11606 | |
11607 | /* A function that the linker calls if we are allowed to use PLTs | |
11608 | and copy relocs. */ | |
11609 | ||
11610 | void | |
11611 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
11612 | { | |
11613 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
11614 | } | |
b49e97c9 TS |
11615 | \f |
11616 | /* We need to use a special link routine to handle the .reginfo and | |
11617 | the .mdebug sections. We need to merge all instances of these | |
11618 | sections together, not write them all out sequentially. */ | |
11619 | ||
b34976b6 | 11620 | bfd_boolean |
9719ad41 | 11621 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 11622 | { |
b49e97c9 TS |
11623 | asection *o; |
11624 | struct bfd_link_order *p; | |
11625 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
11626 | asection *rtproc_sec; | |
11627 | Elf32_RegInfo reginfo; | |
11628 | struct ecoff_debug_info debug; | |
861fb55a | 11629 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
11630 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
11631 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 11632 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 11633 | void *mdebug_handle = NULL; |
b49e97c9 TS |
11634 | asection *s; |
11635 | EXTR esym; | |
11636 | unsigned int i; | |
11637 | bfd_size_type amt; | |
0a44bf69 | 11638 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
11639 | |
11640 | static const char * const secname[] = | |
11641 | { | |
11642 | ".text", ".init", ".fini", ".data", | |
11643 | ".rodata", ".sdata", ".sbss", ".bss" | |
11644 | }; | |
11645 | static const int sc[] = | |
11646 | { | |
11647 | scText, scInit, scFini, scData, | |
11648 | scRData, scSData, scSBss, scBss | |
11649 | }; | |
11650 | ||
d4596a51 RS |
11651 | /* Sort the dynamic symbols so that those with GOT entries come after |
11652 | those without. */ | |
0a44bf69 | 11653 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
11654 | BFD_ASSERT (htab != NULL); |
11655 | ||
d4596a51 RS |
11656 | if (!mips_elf_sort_hash_table (abfd, info)) |
11657 | return FALSE; | |
b49e97c9 | 11658 | |
861fb55a DJ |
11659 | /* Create any scheduled LA25 stubs. */ |
11660 | hti.info = info; | |
11661 | hti.output_bfd = abfd; | |
11662 | hti.error = FALSE; | |
11663 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
11664 | if (hti.error) | |
11665 | return FALSE; | |
11666 | ||
b49e97c9 TS |
11667 | /* Get a value for the GP register. */ |
11668 | if (elf_gp (abfd) == 0) | |
11669 | { | |
11670 | struct bfd_link_hash_entry *h; | |
11671 | ||
b34976b6 | 11672 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 11673 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
11674 | elf_gp (abfd) = (h->u.def.value |
11675 | + h->u.def.section->output_section->vma | |
11676 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
11677 | else if (htab->is_vxworks |
11678 | && (h = bfd_link_hash_lookup (info->hash, | |
11679 | "_GLOBAL_OFFSET_TABLE_", | |
11680 | FALSE, FALSE, TRUE)) | |
11681 | && h->type == bfd_link_hash_defined) | |
11682 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
11683 | + h->u.def.section->output_offset | |
11684 | + h->u.def.value); | |
1049f94e | 11685 | else if (info->relocatable) |
b49e97c9 TS |
11686 | { |
11687 | bfd_vma lo = MINUS_ONE; | |
11688 | ||
11689 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 11690 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
11691 | if (o->vma < lo |
11692 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
11693 | lo = o->vma; | |
11694 | ||
11695 | /* And calculate GP relative to that. */ | |
0a44bf69 | 11696 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
11697 | } |
11698 | else | |
11699 | { | |
11700 | /* If the relocate_section function needs to do a reloc | |
11701 | involving the GP value, it should make a reloc_dangerous | |
11702 | callback to warn that GP is not defined. */ | |
11703 | } | |
11704 | } | |
11705 | ||
11706 | /* Go through the sections and collect the .reginfo and .mdebug | |
11707 | information. */ | |
11708 | reginfo_sec = NULL; | |
11709 | mdebug_sec = NULL; | |
11710 | gptab_data_sec = NULL; | |
11711 | gptab_bss_sec = NULL; | |
9719ad41 | 11712 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
11713 | { |
11714 | if (strcmp (o->name, ".reginfo") == 0) | |
11715 | { | |
11716 | memset (®info, 0, sizeof reginfo); | |
11717 | ||
11718 | /* We have found the .reginfo section in the output file. | |
11719 | Look through all the link_orders comprising it and merge | |
11720 | the information together. */ | |
8423293d | 11721 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11722 | { |
11723 | asection *input_section; | |
11724 | bfd *input_bfd; | |
11725 | Elf32_External_RegInfo ext; | |
11726 | Elf32_RegInfo sub; | |
11727 | ||
11728 | if (p->type != bfd_indirect_link_order) | |
11729 | { | |
11730 | if (p->type == bfd_data_link_order) | |
11731 | continue; | |
11732 | abort (); | |
11733 | } | |
11734 | ||
11735 | input_section = p->u.indirect.section; | |
11736 | input_bfd = input_section->owner; | |
11737 | ||
b49e97c9 | 11738 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 11739 | &ext, 0, sizeof ext)) |
b34976b6 | 11740 | return FALSE; |
b49e97c9 TS |
11741 | |
11742 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
11743 | ||
11744 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
11745 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
11746 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
11747 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
11748 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
11749 | ||
11750 | /* ri_gp_value is set by the function | |
11751 | mips_elf32_section_processing when the section is | |
11752 | finally written out. */ | |
11753 | ||
11754 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11755 | elf_link_input_bfd ignores this section. */ | |
11756 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11757 | } | |
11758 | ||
11759 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 11760 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
11761 | |
11762 | /* Skip this section later on (I don't think this currently | |
11763 | matters, but someday it might). */ | |
8423293d | 11764 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11765 | |
11766 | reginfo_sec = o; | |
11767 | } | |
11768 | ||
11769 | if (strcmp (o->name, ".mdebug") == 0) | |
11770 | { | |
11771 | struct extsym_info einfo; | |
11772 | bfd_vma last; | |
11773 | ||
11774 | /* We have found the .mdebug section in the output file. | |
11775 | Look through all the link_orders comprising it and merge | |
11776 | the information together. */ | |
11777 | symhdr->magic = swap->sym_magic; | |
11778 | /* FIXME: What should the version stamp be? */ | |
11779 | symhdr->vstamp = 0; | |
11780 | symhdr->ilineMax = 0; | |
11781 | symhdr->cbLine = 0; | |
11782 | symhdr->idnMax = 0; | |
11783 | symhdr->ipdMax = 0; | |
11784 | symhdr->isymMax = 0; | |
11785 | symhdr->ioptMax = 0; | |
11786 | symhdr->iauxMax = 0; | |
11787 | symhdr->issMax = 0; | |
11788 | symhdr->issExtMax = 0; | |
11789 | symhdr->ifdMax = 0; | |
11790 | symhdr->crfd = 0; | |
11791 | symhdr->iextMax = 0; | |
11792 | ||
11793 | /* We accumulate the debugging information itself in the | |
11794 | debug_info structure. */ | |
11795 | debug.line = NULL; | |
11796 | debug.external_dnr = NULL; | |
11797 | debug.external_pdr = NULL; | |
11798 | debug.external_sym = NULL; | |
11799 | debug.external_opt = NULL; | |
11800 | debug.external_aux = NULL; | |
11801 | debug.ss = NULL; | |
11802 | debug.ssext = debug.ssext_end = NULL; | |
11803 | debug.external_fdr = NULL; | |
11804 | debug.external_rfd = NULL; | |
11805 | debug.external_ext = debug.external_ext_end = NULL; | |
11806 | ||
11807 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 11808 | if (mdebug_handle == NULL) |
b34976b6 | 11809 | return FALSE; |
b49e97c9 TS |
11810 | |
11811 | esym.jmptbl = 0; | |
11812 | esym.cobol_main = 0; | |
11813 | esym.weakext = 0; | |
11814 | esym.reserved = 0; | |
11815 | esym.ifd = ifdNil; | |
11816 | esym.asym.iss = issNil; | |
11817 | esym.asym.st = stLocal; | |
11818 | esym.asym.reserved = 0; | |
11819 | esym.asym.index = indexNil; | |
11820 | last = 0; | |
11821 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
11822 | { | |
11823 | esym.asym.sc = sc[i]; | |
11824 | s = bfd_get_section_by_name (abfd, secname[i]); | |
11825 | if (s != NULL) | |
11826 | { | |
11827 | esym.asym.value = s->vma; | |
eea6121a | 11828 | last = s->vma + s->size; |
b49e97c9 TS |
11829 | } |
11830 | else | |
11831 | esym.asym.value = last; | |
11832 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
11833 | secname[i], &esym)) | |
b34976b6 | 11834 | return FALSE; |
b49e97c9 TS |
11835 | } |
11836 | ||
8423293d | 11837 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11838 | { |
11839 | asection *input_section; | |
11840 | bfd *input_bfd; | |
11841 | const struct ecoff_debug_swap *input_swap; | |
11842 | struct ecoff_debug_info input_debug; | |
11843 | char *eraw_src; | |
11844 | char *eraw_end; | |
11845 | ||
11846 | if (p->type != bfd_indirect_link_order) | |
11847 | { | |
11848 | if (p->type == bfd_data_link_order) | |
11849 | continue; | |
11850 | abort (); | |
11851 | } | |
11852 | ||
11853 | input_section = p->u.indirect.section; | |
11854 | input_bfd = input_section->owner; | |
11855 | ||
d5eaccd7 | 11856 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
11857 | { |
11858 | /* I don't know what a non MIPS ELF bfd would be | |
11859 | doing with a .mdebug section, but I don't really | |
11860 | want to deal with it. */ | |
11861 | continue; | |
11862 | } | |
11863 | ||
11864 | input_swap = (get_elf_backend_data (input_bfd) | |
11865 | ->elf_backend_ecoff_debug_swap); | |
11866 | ||
eea6121a | 11867 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
11868 | |
11869 | /* The ECOFF linking code expects that we have already | |
11870 | read in the debugging information and set up an | |
11871 | ecoff_debug_info structure, so we do that now. */ | |
11872 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
11873 | &input_debug)) | |
b34976b6 | 11874 | return FALSE; |
b49e97c9 TS |
11875 | |
11876 | if (! (bfd_ecoff_debug_accumulate | |
11877 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
11878 | &input_debug, input_swap, info))) | |
b34976b6 | 11879 | return FALSE; |
b49e97c9 TS |
11880 | |
11881 | /* Loop through the external symbols. For each one with | |
11882 | interesting information, try to find the symbol in | |
11883 | the linker global hash table and save the information | |
11884 | for the output external symbols. */ | |
11885 | eraw_src = input_debug.external_ext; | |
11886 | eraw_end = (eraw_src | |
11887 | + (input_debug.symbolic_header.iextMax | |
11888 | * input_swap->external_ext_size)); | |
11889 | for (; | |
11890 | eraw_src < eraw_end; | |
11891 | eraw_src += input_swap->external_ext_size) | |
11892 | { | |
11893 | EXTR ext; | |
11894 | const char *name; | |
11895 | struct mips_elf_link_hash_entry *h; | |
11896 | ||
9719ad41 | 11897 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
11898 | if (ext.asym.sc == scNil |
11899 | || ext.asym.sc == scUndefined | |
11900 | || ext.asym.sc == scSUndefined) | |
11901 | continue; | |
11902 | ||
11903 | name = input_debug.ssext + ext.asym.iss; | |
11904 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 11905 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
11906 | if (h == NULL || h->esym.ifd != -2) |
11907 | continue; | |
11908 | ||
11909 | if (ext.ifd != -1) | |
11910 | { | |
11911 | BFD_ASSERT (ext.ifd | |
11912 | < input_debug.symbolic_header.ifdMax); | |
11913 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
11914 | } | |
11915 | ||
11916 | h->esym = ext; | |
11917 | } | |
11918 | ||
11919 | /* Free up the information we just read. */ | |
11920 | free (input_debug.line); | |
11921 | free (input_debug.external_dnr); | |
11922 | free (input_debug.external_pdr); | |
11923 | free (input_debug.external_sym); | |
11924 | free (input_debug.external_opt); | |
11925 | free (input_debug.external_aux); | |
11926 | free (input_debug.ss); | |
11927 | free (input_debug.ssext); | |
11928 | free (input_debug.external_fdr); | |
11929 | free (input_debug.external_rfd); | |
11930 | free (input_debug.external_ext); | |
11931 | ||
11932 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11933 | elf_link_input_bfd ignores this section. */ | |
11934 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11935 | } | |
11936 | ||
11937 | if (SGI_COMPAT (abfd) && info->shared) | |
11938 | { | |
11939 | /* Create .rtproc section. */ | |
11940 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
11941 | if (rtproc_sec == NULL) | |
11942 | { | |
11943 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
11944 | | SEC_LINKER_CREATED | SEC_READONLY); | |
11945 | ||
3496cb2a L |
11946 | rtproc_sec = bfd_make_section_with_flags (abfd, |
11947 | ".rtproc", | |
11948 | flags); | |
b49e97c9 | 11949 | if (rtproc_sec == NULL |
b49e97c9 | 11950 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 11951 | return FALSE; |
b49e97c9 TS |
11952 | } |
11953 | ||
11954 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
11955 | info, rtproc_sec, | |
11956 | &debug)) | |
b34976b6 | 11957 | return FALSE; |
b49e97c9 TS |
11958 | } |
11959 | ||
11960 | /* Build the external symbol information. */ | |
11961 | einfo.abfd = abfd; | |
11962 | einfo.info = info; | |
11963 | einfo.debug = &debug; | |
11964 | einfo.swap = swap; | |
b34976b6 | 11965 | einfo.failed = FALSE; |
b49e97c9 | 11966 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 11967 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 11968 | if (einfo.failed) |
b34976b6 | 11969 | return FALSE; |
b49e97c9 TS |
11970 | |
11971 | /* Set the size of the .mdebug section. */ | |
eea6121a | 11972 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
11973 | |
11974 | /* Skip this section later on (I don't think this currently | |
11975 | matters, but someday it might). */ | |
8423293d | 11976 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11977 | |
11978 | mdebug_sec = o; | |
11979 | } | |
11980 | ||
0112cd26 | 11981 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
11982 | { |
11983 | const char *subname; | |
11984 | unsigned int c; | |
11985 | Elf32_gptab *tab; | |
11986 | Elf32_External_gptab *ext_tab; | |
11987 | unsigned int j; | |
11988 | ||
11989 | /* The .gptab.sdata and .gptab.sbss sections hold | |
11990 | information describing how the small data area would | |
11991 | change depending upon the -G switch. These sections | |
11992 | not used in executables files. */ | |
1049f94e | 11993 | if (! info->relocatable) |
b49e97c9 | 11994 | { |
8423293d | 11995 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11996 | { |
11997 | asection *input_section; | |
11998 | ||
11999 | if (p->type != bfd_indirect_link_order) | |
12000 | { | |
12001 | if (p->type == bfd_data_link_order) | |
12002 | continue; | |
12003 | abort (); | |
12004 | } | |
12005 | ||
12006 | input_section = p->u.indirect.section; | |
12007 | ||
12008 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
12009 | elf_link_input_bfd ignores this section. */ | |
12010 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
12011 | } | |
12012 | ||
12013 | /* Skip this section later on (I don't think this | |
12014 | currently matters, but someday it might). */ | |
8423293d | 12015 | o->map_head.link_order = NULL; |
b49e97c9 TS |
12016 | |
12017 | /* Really remove the section. */ | |
5daa8fe7 | 12018 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
12019 | --abfd->section_count; |
12020 | ||
12021 | continue; | |
12022 | } | |
12023 | ||
12024 | /* There is one gptab for initialized data, and one for | |
12025 | uninitialized data. */ | |
12026 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
12027 | gptab_data_sec = o; | |
12028 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
12029 | gptab_bss_sec = o; | |
12030 | else | |
12031 | { | |
12032 | (*_bfd_error_handler) | |
12033 | (_("%s: illegal section name `%s'"), | |
12034 | bfd_get_filename (abfd), o->name); | |
12035 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 12036 | return FALSE; |
b49e97c9 TS |
12037 | } |
12038 | ||
12039 | /* The linker script always combines .gptab.data and | |
12040 | .gptab.sdata into .gptab.sdata, and likewise for | |
12041 | .gptab.bss and .gptab.sbss. It is possible that there is | |
12042 | no .sdata or .sbss section in the output file, in which | |
12043 | case we must change the name of the output section. */ | |
12044 | subname = o->name + sizeof ".gptab" - 1; | |
12045 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
12046 | { | |
12047 | if (o == gptab_data_sec) | |
12048 | o->name = ".gptab.data"; | |
12049 | else | |
12050 | o->name = ".gptab.bss"; | |
12051 | subname = o->name + sizeof ".gptab" - 1; | |
12052 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
12053 | } | |
12054 | ||
12055 | /* Set up the first entry. */ | |
12056 | c = 1; | |
12057 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 12058 | tab = bfd_malloc (amt); |
b49e97c9 | 12059 | if (tab == NULL) |
b34976b6 | 12060 | return FALSE; |
b49e97c9 TS |
12061 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
12062 | tab[0].gt_header.gt_unused = 0; | |
12063 | ||
12064 | /* Combine the input sections. */ | |
8423293d | 12065 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
12066 | { |
12067 | asection *input_section; | |
12068 | bfd *input_bfd; | |
12069 | bfd_size_type size; | |
12070 | unsigned long last; | |
12071 | bfd_size_type gpentry; | |
12072 | ||
12073 | if (p->type != bfd_indirect_link_order) | |
12074 | { | |
12075 | if (p->type == bfd_data_link_order) | |
12076 | continue; | |
12077 | abort (); | |
12078 | } | |
12079 | ||
12080 | input_section = p->u.indirect.section; | |
12081 | input_bfd = input_section->owner; | |
12082 | ||
12083 | /* Combine the gptab entries for this input section one | |
12084 | by one. We know that the input gptab entries are | |
12085 | sorted by ascending -G value. */ | |
eea6121a | 12086 | size = input_section->size; |
b49e97c9 TS |
12087 | last = 0; |
12088 | for (gpentry = sizeof (Elf32_External_gptab); | |
12089 | gpentry < size; | |
12090 | gpentry += sizeof (Elf32_External_gptab)) | |
12091 | { | |
12092 | Elf32_External_gptab ext_gptab; | |
12093 | Elf32_gptab int_gptab; | |
12094 | unsigned long val; | |
12095 | unsigned long add; | |
b34976b6 | 12096 | bfd_boolean exact; |
b49e97c9 TS |
12097 | unsigned int look; |
12098 | ||
12099 | if (! (bfd_get_section_contents | |
9719ad41 RS |
12100 | (input_bfd, input_section, &ext_gptab, gpentry, |
12101 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
12102 | { |
12103 | free (tab); | |
b34976b6 | 12104 | return FALSE; |
b49e97c9 TS |
12105 | } |
12106 | ||
12107 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
12108 | &int_gptab); | |
12109 | val = int_gptab.gt_entry.gt_g_value; | |
12110 | add = int_gptab.gt_entry.gt_bytes - last; | |
12111 | ||
b34976b6 | 12112 | exact = FALSE; |
b49e97c9 TS |
12113 | for (look = 1; look < c; look++) |
12114 | { | |
12115 | if (tab[look].gt_entry.gt_g_value >= val) | |
12116 | tab[look].gt_entry.gt_bytes += add; | |
12117 | ||
12118 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 12119 | exact = TRUE; |
b49e97c9 TS |
12120 | } |
12121 | ||
12122 | if (! exact) | |
12123 | { | |
12124 | Elf32_gptab *new_tab; | |
12125 | unsigned int max; | |
12126 | ||
12127 | /* We need a new table entry. */ | |
12128 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 12129 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
12130 | if (new_tab == NULL) |
12131 | { | |
12132 | free (tab); | |
b34976b6 | 12133 | return FALSE; |
b49e97c9 TS |
12134 | } |
12135 | tab = new_tab; | |
12136 | tab[c].gt_entry.gt_g_value = val; | |
12137 | tab[c].gt_entry.gt_bytes = add; | |
12138 | ||
12139 | /* Merge in the size for the next smallest -G | |
12140 | value, since that will be implied by this new | |
12141 | value. */ | |
12142 | max = 0; | |
12143 | for (look = 1; look < c; look++) | |
12144 | { | |
12145 | if (tab[look].gt_entry.gt_g_value < val | |
12146 | && (max == 0 | |
12147 | || (tab[look].gt_entry.gt_g_value | |
12148 | > tab[max].gt_entry.gt_g_value))) | |
12149 | max = look; | |
12150 | } | |
12151 | if (max != 0) | |
12152 | tab[c].gt_entry.gt_bytes += | |
12153 | tab[max].gt_entry.gt_bytes; | |
12154 | ||
12155 | ++c; | |
12156 | } | |
12157 | ||
12158 | last = int_gptab.gt_entry.gt_bytes; | |
12159 | } | |
12160 | ||
12161 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
12162 | elf_link_input_bfd ignores this section. */ | |
12163 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
12164 | } | |
12165 | ||
12166 | /* The table must be sorted by -G value. */ | |
12167 | if (c > 2) | |
12168 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
12169 | ||
12170 | /* Swap out the table. */ | |
12171 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 12172 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
12173 | if (ext_tab == NULL) |
12174 | { | |
12175 | free (tab); | |
b34976b6 | 12176 | return FALSE; |
b49e97c9 TS |
12177 | } |
12178 | ||
12179 | for (j = 0; j < c; j++) | |
12180 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
12181 | free (tab); | |
12182 | ||
eea6121a | 12183 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
12184 | o->contents = (bfd_byte *) ext_tab; |
12185 | ||
12186 | /* Skip this section later on (I don't think this currently | |
12187 | matters, but someday it might). */ | |
8423293d | 12188 | o->map_head.link_order = NULL; |
b49e97c9 TS |
12189 | } |
12190 | } | |
12191 | ||
12192 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 12193 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 12194 | return FALSE; |
b49e97c9 TS |
12195 | |
12196 | /* Now write out the computed sections. */ | |
12197 | ||
9719ad41 | 12198 | if (reginfo_sec != NULL) |
b49e97c9 TS |
12199 | { |
12200 | Elf32_External_RegInfo ext; | |
12201 | ||
12202 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 12203 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 12204 | return FALSE; |
b49e97c9 TS |
12205 | } |
12206 | ||
9719ad41 | 12207 | if (mdebug_sec != NULL) |
b49e97c9 TS |
12208 | { |
12209 | BFD_ASSERT (abfd->output_has_begun); | |
12210 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
12211 | swap, info, | |
12212 | mdebug_sec->filepos)) | |
b34976b6 | 12213 | return FALSE; |
b49e97c9 TS |
12214 | |
12215 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
12216 | } | |
12217 | ||
9719ad41 | 12218 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
12219 | { |
12220 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
12221 | gptab_data_sec->contents, | |
eea6121a | 12222 | 0, gptab_data_sec->size)) |
b34976b6 | 12223 | return FALSE; |
b49e97c9 TS |
12224 | } |
12225 | ||
9719ad41 | 12226 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
12227 | { |
12228 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
12229 | gptab_bss_sec->contents, | |
eea6121a | 12230 | 0, gptab_bss_sec->size)) |
b34976b6 | 12231 | return FALSE; |
b49e97c9 TS |
12232 | } |
12233 | ||
12234 | if (SGI_COMPAT (abfd)) | |
12235 | { | |
12236 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
12237 | if (rtproc_sec != NULL) | |
12238 | { | |
12239 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
12240 | rtproc_sec->contents, | |
eea6121a | 12241 | 0, rtproc_sec->size)) |
b34976b6 | 12242 | return FALSE; |
b49e97c9 TS |
12243 | } |
12244 | } | |
12245 | ||
b34976b6 | 12246 | return TRUE; |
b49e97c9 TS |
12247 | } |
12248 | \f | |
64543e1a RS |
12249 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
12250 | ||
12251 | struct mips_mach_extension { | |
12252 | unsigned long extension, base; | |
12253 | }; | |
12254 | ||
12255 | ||
12256 | /* An array describing how BFD machines relate to one another. The entries | |
12257 | are ordered topologically with MIPS I extensions listed last. */ | |
12258 | ||
12259 | static const struct mips_mach_extension mips_mach_extensions[] = { | |
6f179bd0 AN |
12260 | /* MIPS64r2 extensions. */ |
12261 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
12262 | ||
64543e1a | 12263 | /* MIPS64 extensions. */ |
5f74bc13 | 12264 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a | 12265 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
52b6b6b9 | 12266 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, |
64543e1a RS |
12267 | |
12268 | /* MIPS V extensions. */ | |
12269 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
12270 | ||
12271 | /* R10000 extensions. */ | |
12272 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
3aa3176b TS |
12273 | { bfd_mach_mips14000, bfd_mach_mips10000 }, |
12274 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
64543e1a RS |
12275 | |
12276 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
12277 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
12278 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
12279 | many libraries will just use the core ISA. Perhaps we could add | |
12280 | some sort of ASE flag if this ever proves a problem. */ | |
12281 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
12282 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
12283 | ||
12284 | /* MIPS IV extensions. */ | |
12285 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
12286 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
12287 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 12288 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 12289 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
12290 | |
12291 | /* VR4100 extensions. */ | |
12292 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
12293 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
12294 | ||
12295 | /* MIPS III extensions. */ | |
350cc38d MS |
12296 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
12297 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
12298 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
12299 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
12300 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
12301 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
12302 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
12303 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
12304 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
12305 | ||
12306 | /* MIPS32 extensions. */ | |
12307 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
12308 | ||
12309 | /* MIPS II extensions. */ | |
12310 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
12311 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
12312 | ||
12313 | /* MIPS I extensions. */ | |
12314 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
12315 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
12316 | }; | |
12317 | ||
12318 | ||
12319 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
12320 | ||
12321 | static bfd_boolean | |
9719ad41 | 12322 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
12323 | { |
12324 | size_t i; | |
12325 | ||
c5211a54 RS |
12326 | if (extension == base) |
12327 | return TRUE; | |
12328 | ||
12329 | if (base == bfd_mach_mipsisa32 | |
12330 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
12331 | return TRUE; | |
12332 | ||
12333 | if (base == bfd_mach_mipsisa32r2 | |
12334 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
12335 | return TRUE; | |
12336 | ||
12337 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 12338 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
12339 | { |
12340 | extension = mips_mach_extensions[i].base; | |
12341 | if (extension == base) | |
12342 | return TRUE; | |
12343 | } | |
64543e1a | 12344 | |
c5211a54 | 12345 | return FALSE; |
64543e1a RS |
12346 | } |
12347 | ||
12348 | ||
12349 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 12350 | |
b34976b6 | 12351 | static bfd_boolean |
9719ad41 | 12352 | mips_32bit_flags_p (flagword flags) |
00707a0e | 12353 | { |
64543e1a RS |
12354 | return ((flags & EF_MIPS_32BITMODE) != 0 |
12355 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
12356 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
12357 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
12358 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
12359 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
12360 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
12361 | } |
12362 | ||
64543e1a | 12363 | |
2cf19d5c JM |
12364 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
12365 | there are conflicting attributes. */ | |
12366 | static bfd_boolean | |
12367 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
12368 | { | |
12369 | obj_attribute *in_attr; | |
12370 | obj_attribute *out_attr; | |
12371 | ||
12372 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
12373 | { | |
12374 | /* This is the first object. Copy the attributes. */ | |
12375 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
12376 | ||
12377 | /* Use the Tag_null value to indicate the attributes have been | |
12378 | initialized. */ | |
12379 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
12380 | ||
12381 | return TRUE; | |
12382 | } | |
12383 | ||
12384 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
12385 | non-conflicting ones. */ | |
12386 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
12387 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
12388 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12389 | { | |
12390 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
12391 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
12392 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
12393 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
12394 | ; | |
42554f6a | 12395 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
12396 | _bfd_error_handler |
12397 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
12398 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
42554f6a | 12399 | else if (out_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
12400 | _bfd_error_handler |
12401 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
12402 | out_attr[Tag_GNU_MIPS_ABI_FP].i); | |
12403 | else | |
12404 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12405 | { | |
12406 | case 1: | |
12407 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12408 | { | |
12409 | case 2: | |
12410 | _bfd_error_handler | |
12411 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
12412 | obfd, ibfd); | |
51a0dd31 | 12413 | break; |
2cf19d5c JM |
12414 | |
12415 | case 3: | |
12416 | _bfd_error_handler | |
12417 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12418 | obfd, ibfd); | |
12419 | break; | |
12420 | ||
42554f6a TS |
12421 | case 4: |
12422 | _bfd_error_handler | |
12423 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
12424 | obfd, ibfd); | |
12425 | break; | |
12426 | ||
2cf19d5c JM |
12427 | default: |
12428 | abort (); | |
12429 | } | |
12430 | break; | |
12431 | ||
12432 | case 2: | |
12433 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12434 | { | |
12435 | case 1: | |
12436 | _bfd_error_handler | |
12437 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
12438 | ibfd, obfd); | |
51a0dd31 | 12439 | break; |
2cf19d5c JM |
12440 | |
12441 | case 3: | |
12442 | _bfd_error_handler | |
12443 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12444 | obfd, ibfd); | |
12445 | break; | |
12446 | ||
42554f6a TS |
12447 | case 4: |
12448 | _bfd_error_handler | |
12449 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
12450 | obfd, ibfd); | |
12451 | break; | |
12452 | ||
2cf19d5c JM |
12453 | default: |
12454 | abort (); | |
12455 | } | |
12456 | break; | |
12457 | ||
12458 | case 3: | |
12459 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12460 | { | |
12461 | case 1: | |
12462 | case 2: | |
42554f6a | 12463 | case 4: |
2cf19d5c JM |
12464 | _bfd_error_handler |
12465 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12466 | ibfd, obfd); | |
12467 | break; | |
12468 | ||
12469 | default: | |
12470 | abort (); | |
12471 | } | |
12472 | break; | |
12473 | ||
42554f6a TS |
12474 | case 4: |
12475 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
12476 | { | |
12477 | case 1: | |
12478 | _bfd_error_handler | |
12479 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
12480 | ibfd, obfd); | |
12481 | break; | |
12482 | ||
12483 | case 2: | |
12484 | _bfd_error_handler | |
12485 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
12486 | ibfd, obfd); | |
12487 | break; | |
12488 | ||
12489 | case 3: | |
12490 | _bfd_error_handler | |
12491 | (_("Warning: %B uses hard float, %B uses soft float"), | |
12492 | obfd, ibfd); | |
12493 | break; | |
12494 | ||
12495 | default: | |
12496 | abort (); | |
12497 | } | |
12498 | break; | |
12499 | ||
2cf19d5c JM |
12500 | default: |
12501 | abort (); | |
12502 | } | |
12503 | } | |
12504 | ||
12505 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
12506 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
12507 | ||
12508 | return TRUE; | |
12509 | } | |
12510 | ||
b49e97c9 TS |
12511 | /* Merge backend specific data from an object file to the output |
12512 | object file when linking. */ | |
12513 | ||
b34976b6 | 12514 | bfd_boolean |
9719ad41 | 12515 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
12516 | { |
12517 | flagword old_flags; | |
12518 | flagword new_flags; | |
b34976b6 AM |
12519 | bfd_boolean ok; |
12520 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
12521 | asection *sec; |
12522 | ||
12523 | /* Check if we have the same endianess */ | |
82e51918 | 12524 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
12525 | { |
12526 | (*_bfd_error_handler) | |
d003868e AM |
12527 | (_("%B: endianness incompatible with that of the selected emulation"), |
12528 | ibfd); | |
aa701218 AO |
12529 | return FALSE; |
12530 | } | |
b49e97c9 | 12531 | |
d5eaccd7 | 12532 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 12533 | return TRUE; |
b49e97c9 | 12534 | |
aa701218 AO |
12535 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
12536 | { | |
12537 | (*_bfd_error_handler) | |
d003868e AM |
12538 | (_("%B: ABI is incompatible with that of the selected emulation"), |
12539 | ibfd); | |
aa701218 AO |
12540 | return FALSE; |
12541 | } | |
12542 | ||
2cf19d5c JM |
12543 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
12544 | return FALSE; | |
12545 | ||
b49e97c9 TS |
12546 | new_flags = elf_elfheader (ibfd)->e_flags; |
12547 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
12548 | old_flags = elf_elfheader (obfd)->e_flags; | |
12549 | ||
12550 | if (! elf_flags_init (obfd)) | |
12551 | { | |
b34976b6 | 12552 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
12553 | elf_elfheader (obfd)->e_flags = new_flags; |
12554 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
12555 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
12556 | ||
12557 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 TS |
12558 | && (bfd_get_arch_info (obfd)->the_default |
12559 | || mips_mach_extends_p (bfd_get_mach (obfd), | |
12560 | bfd_get_mach (ibfd)))) | |
b49e97c9 TS |
12561 | { |
12562 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
12563 | bfd_get_mach (ibfd))) | |
b34976b6 | 12564 | return FALSE; |
b49e97c9 TS |
12565 | } |
12566 | ||
b34976b6 | 12567 | return TRUE; |
b49e97c9 TS |
12568 | } |
12569 | ||
12570 | /* Check flag compatibility. */ | |
12571 | ||
12572 | new_flags &= ~EF_MIPS_NOREORDER; | |
12573 | old_flags &= ~EF_MIPS_NOREORDER; | |
12574 | ||
f4416af6 AO |
12575 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
12576 | doesn't seem to matter. */ | |
12577 | new_flags &= ~EF_MIPS_XGOT; | |
12578 | old_flags &= ~EF_MIPS_XGOT; | |
12579 | ||
98a8deaf RS |
12580 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
12581 | just be able to ignore this. */ | |
12582 | new_flags &= ~EF_MIPS_UCODE; | |
12583 | old_flags &= ~EF_MIPS_UCODE; | |
12584 | ||
861fb55a DJ |
12585 | /* DSOs should only be linked with CPIC code. */ |
12586 | if ((ibfd->flags & DYNAMIC) != 0) | |
12587 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
0a44bf69 | 12588 | |
b49e97c9 | 12589 | if (new_flags == old_flags) |
b34976b6 | 12590 | return TRUE; |
b49e97c9 TS |
12591 | |
12592 | /* Check to see if the input BFD actually contains any sections. | |
12593 | If not, its flags may not have been initialised either, but it cannot | |
12594 | actually cause any incompatibility. */ | |
12595 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
12596 | { | |
12597 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
12598 | which are automatically generated by gas. */ | |
12599 | if (strcmp (sec->name, ".reginfo") | |
12600 | && strcmp (sec->name, ".mdebug") | |
eea6121a | 12601 | && (sec->size != 0 |
d13d89fa NS |
12602 | || (strcmp (sec->name, ".text") |
12603 | && strcmp (sec->name, ".data") | |
12604 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 12605 | { |
b34976b6 | 12606 | null_input_bfd = FALSE; |
b49e97c9 TS |
12607 | break; |
12608 | } | |
12609 | } | |
12610 | if (null_input_bfd) | |
b34976b6 | 12611 | return TRUE; |
b49e97c9 | 12612 | |
b34976b6 | 12613 | ok = TRUE; |
b49e97c9 | 12614 | |
143d77c5 EC |
12615 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
12616 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 12617 | { |
b49e97c9 | 12618 | (*_bfd_error_handler) |
861fb55a | 12619 | (_("%B: warning: linking abicalls files with non-abicalls files"), |
d003868e | 12620 | ibfd); |
143d77c5 | 12621 | ok = TRUE; |
b49e97c9 TS |
12622 | } |
12623 | ||
143d77c5 EC |
12624 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
12625 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
12626 | if (! (new_flags & EF_MIPS_PIC)) | |
12627 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
12628 | ||
12629 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
12630 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 12631 | |
64543e1a RS |
12632 | /* Compare the ISAs. */ |
12633 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 12634 | { |
64543e1a | 12635 | (*_bfd_error_handler) |
d003868e AM |
12636 | (_("%B: linking 32-bit code with 64-bit code"), |
12637 | ibfd); | |
64543e1a RS |
12638 | ok = FALSE; |
12639 | } | |
12640 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
12641 | { | |
12642 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
12643 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 12644 | { |
64543e1a RS |
12645 | /* Copy the architecture info from IBFD to OBFD. Also copy |
12646 | the 32-bit flag (if set) so that we continue to recognise | |
12647 | OBFD as a 32-bit binary. */ | |
12648 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
12649 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
12650 | elf_elfheader (obfd)->e_flags | |
12651 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
12652 | ||
12653 | /* Copy across the ABI flags if OBFD doesn't use them | |
12654 | and if that was what caused us to treat IBFD as 32-bit. */ | |
12655 | if ((old_flags & EF_MIPS_ABI) == 0 | |
12656 | && mips_32bit_flags_p (new_flags) | |
12657 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
12658 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
12659 | } |
12660 | else | |
12661 | { | |
64543e1a | 12662 | /* The ISAs aren't compatible. */ |
b49e97c9 | 12663 | (*_bfd_error_handler) |
d003868e AM |
12664 | (_("%B: linking %s module with previous %s modules"), |
12665 | ibfd, | |
64543e1a RS |
12666 | bfd_printable_name (ibfd), |
12667 | bfd_printable_name (obfd)); | |
b34976b6 | 12668 | ok = FALSE; |
b49e97c9 | 12669 | } |
b49e97c9 TS |
12670 | } |
12671 | ||
64543e1a RS |
12672 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
12673 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
12674 | ||
12675 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
12676 | does set EI_CLASS differently from any 32-bit ABI. */ |
12677 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
12678 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
12679 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
12680 | { | |
12681 | /* Only error if both are set (to different values). */ | |
12682 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
12683 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
12684 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
12685 | { | |
12686 | (*_bfd_error_handler) | |
d003868e AM |
12687 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
12688 | ibfd, | |
b49e97c9 TS |
12689 | elf_mips_abi_name (ibfd), |
12690 | elf_mips_abi_name (obfd)); | |
b34976b6 | 12691 | ok = FALSE; |
b49e97c9 TS |
12692 | } |
12693 | new_flags &= ~EF_MIPS_ABI; | |
12694 | old_flags &= ~EF_MIPS_ABI; | |
12695 | } | |
12696 | ||
fb39dac1 RS |
12697 | /* For now, allow arbitrary mixing of ASEs (retain the union). */ |
12698 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
12699 | { | |
12700 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
12701 | ||
12702 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
12703 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
12704 | } | |
12705 | ||
b49e97c9 TS |
12706 | /* Warn about any other mismatches */ |
12707 | if (new_flags != old_flags) | |
12708 | { | |
12709 | (*_bfd_error_handler) | |
d003868e AM |
12710 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
12711 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 12712 | (unsigned long) old_flags); |
b34976b6 | 12713 | ok = FALSE; |
b49e97c9 TS |
12714 | } |
12715 | ||
12716 | if (! ok) | |
12717 | { | |
12718 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 12719 | return FALSE; |
b49e97c9 TS |
12720 | } |
12721 | ||
b34976b6 | 12722 | return TRUE; |
b49e97c9 TS |
12723 | } |
12724 | ||
12725 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
12726 | ||
b34976b6 | 12727 | bfd_boolean |
9719ad41 | 12728 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
12729 | { |
12730 | BFD_ASSERT (!elf_flags_init (abfd) | |
12731 | || elf_elfheader (abfd)->e_flags == flags); | |
12732 | ||
12733 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
12734 | elf_flags_init (abfd) = TRUE; |
12735 | return TRUE; | |
b49e97c9 TS |
12736 | } |
12737 | ||
ad9563d6 CM |
12738 | char * |
12739 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
12740 | { | |
12741 | switch (dtag) | |
12742 | { | |
12743 | default: return ""; | |
12744 | case DT_MIPS_RLD_VERSION: | |
12745 | return "MIPS_RLD_VERSION"; | |
12746 | case DT_MIPS_TIME_STAMP: | |
12747 | return "MIPS_TIME_STAMP"; | |
12748 | case DT_MIPS_ICHECKSUM: | |
12749 | return "MIPS_ICHECKSUM"; | |
12750 | case DT_MIPS_IVERSION: | |
12751 | return "MIPS_IVERSION"; | |
12752 | case DT_MIPS_FLAGS: | |
12753 | return "MIPS_FLAGS"; | |
12754 | case DT_MIPS_BASE_ADDRESS: | |
12755 | return "MIPS_BASE_ADDRESS"; | |
12756 | case DT_MIPS_MSYM: | |
12757 | return "MIPS_MSYM"; | |
12758 | case DT_MIPS_CONFLICT: | |
12759 | return "MIPS_CONFLICT"; | |
12760 | case DT_MIPS_LIBLIST: | |
12761 | return "MIPS_LIBLIST"; | |
12762 | case DT_MIPS_LOCAL_GOTNO: | |
12763 | return "MIPS_LOCAL_GOTNO"; | |
12764 | case DT_MIPS_CONFLICTNO: | |
12765 | return "MIPS_CONFLICTNO"; | |
12766 | case DT_MIPS_LIBLISTNO: | |
12767 | return "MIPS_LIBLISTNO"; | |
12768 | case DT_MIPS_SYMTABNO: | |
12769 | return "MIPS_SYMTABNO"; | |
12770 | case DT_MIPS_UNREFEXTNO: | |
12771 | return "MIPS_UNREFEXTNO"; | |
12772 | case DT_MIPS_GOTSYM: | |
12773 | return "MIPS_GOTSYM"; | |
12774 | case DT_MIPS_HIPAGENO: | |
12775 | return "MIPS_HIPAGENO"; | |
12776 | case DT_MIPS_RLD_MAP: | |
12777 | return "MIPS_RLD_MAP"; | |
12778 | case DT_MIPS_DELTA_CLASS: | |
12779 | return "MIPS_DELTA_CLASS"; | |
12780 | case DT_MIPS_DELTA_CLASS_NO: | |
12781 | return "MIPS_DELTA_CLASS_NO"; | |
12782 | case DT_MIPS_DELTA_INSTANCE: | |
12783 | return "MIPS_DELTA_INSTANCE"; | |
12784 | case DT_MIPS_DELTA_INSTANCE_NO: | |
12785 | return "MIPS_DELTA_INSTANCE_NO"; | |
12786 | case DT_MIPS_DELTA_RELOC: | |
12787 | return "MIPS_DELTA_RELOC"; | |
12788 | case DT_MIPS_DELTA_RELOC_NO: | |
12789 | return "MIPS_DELTA_RELOC_NO"; | |
12790 | case DT_MIPS_DELTA_SYM: | |
12791 | return "MIPS_DELTA_SYM"; | |
12792 | case DT_MIPS_DELTA_SYM_NO: | |
12793 | return "MIPS_DELTA_SYM_NO"; | |
12794 | case DT_MIPS_DELTA_CLASSSYM: | |
12795 | return "MIPS_DELTA_CLASSSYM"; | |
12796 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
12797 | return "MIPS_DELTA_CLASSSYM_NO"; | |
12798 | case DT_MIPS_CXX_FLAGS: | |
12799 | return "MIPS_CXX_FLAGS"; | |
12800 | case DT_MIPS_PIXIE_INIT: | |
12801 | return "MIPS_PIXIE_INIT"; | |
12802 | case DT_MIPS_SYMBOL_LIB: | |
12803 | return "MIPS_SYMBOL_LIB"; | |
12804 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
12805 | return "MIPS_LOCALPAGE_GOTIDX"; | |
12806 | case DT_MIPS_LOCAL_GOTIDX: | |
12807 | return "MIPS_LOCAL_GOTIDX"; | |
12808 | case DT_MIPS_HIDDEN_GOTIDX: | |
12809 | return "MIPS_HIDDEN_GOTIDX"; | |
12810 | case DT_MIPS_PROTECTED_GOTIDX: | |
12811 | return "MIPS_PROTECTED_GOT_IDX"; | |
12812 | case DT_MIPS_OPTIONS: | |
12813 | return "MIPS_OPTIONS"; | |
12814 | case DT_MIPS_INTERFACE: | |
12815 | return "MIPS_INTERFACE"; | |
12816 | case DT_MIPS_DYNSTR_ALIGN: | |
12817 | return "DT_MIPS_DYNSTR_ALIGN"; | |
12818 | case DT_MIPS_INTERFACE_SIZE: | |
12819 | return "DT_MIPS_INTERFACE_SIZE"; | |
12820 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
12821 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
12822 | case DT_MIPS_PERF_SUFFIX: | |
12823 | return "DT_MIPS_PERF_SUFFIX"; | |
12824 | case DT_MIPS_COMPACT_SIZE: | |
12825 | return "DT_MIPS_COMPACT_SIZE"; | |
12826 | case DT_MIPS_GP_VALUE: | |
12827 | return "DT_MIPS_GP_VALUE"; | |
12828 | case DT_MIPS_AUX_DYNAMIC: | |
12829 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
12830 | case DT_MIPS_PLTGOT: |
12831 | return "DT_MIPS_PLTGOT"; | |
12832 | case DT_MIPS_RWPLT: | |
12833 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
12834 | } |
12835 | } | |
12836 | ||
b34976b6 | 12837 | bfd_boolean |
9719ad41 | 12838 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 12839 | { |
9719ad41 | 12840 | FILE *file = ptr; |
b49e97c9 TS |
12841 | |
12842 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
12843 | ||
12844 | /* Print normal ELF private data. */ | |
12845 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
12846 | ||
12847 | /* xgettext:c-format */ | |
12848 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
12849 | ||
12850 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
12851 | fprintf (file, _(" [abi=O32]")); | |
12852 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
12853 | fprintf (file, _(" [abi=O64]")); | |
12854 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
12855 | fprintf (file, _(" [abi=EABI32]")); | |
12856 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
12857 | fprintf (file, _(" [abi=EABI64]")); | |
12858 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
12859 | fprintf (file, _(" [abi unknown]")); | |
12860 | else if (ABI_N32_P (abfd)) | |
12861 | fprintf (file, _(" [abi=N32]")); | |
12862 | else if (ABI_64_P (abfd)) | |
12863 | fprintf (file, _(" [abi=64]")); | |
12864 | else | |
12865 | fprintf (file, _(" [no abi set]")); | |
12866 | ||
12867 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 12868 | fprintf (file, " [mips1]"); |
b49e97c9 | 12869 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 12870 | fprintf (file, " [mips2]"); |
b49e97c9 | 12871 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 12872 | fprintf (file, " [mips3]"); |
b49e97c9 | 12873 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 12874 | fprintf (file, " [mips4]"); |
b49e97c9 | 12875 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 12876 | fprintf (file, " [mips5]"); |
b49e97c9 | 12877 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 12878 | fprintf (file, " [mips32]"); |
b49e97c9 | 12879 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 12880 | fprintf (file, " [mips64]"); |
af7ee8bf | 12881 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 12882 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 12883 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 12884 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
12885 | else |
12886 | fprintf (file, _(" [unknown ISA]")); | |
12887 | ||
40d32fc6 | 12888 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 12889 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
12890 | |
12891 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 12892 | fprintf (file, " [mips16]"); |
40d32fc6 | 12893 | |
b49e97c9 | 12894 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 12895 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
12896 | else |
12897 | fprintf (file, _(" [not 32bitmode]")); | |
12898 | ||
c0e3f241 | 12899 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 12900 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
12901 | |
12902 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 12903 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
12904 | |
12905 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 12906 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
12907 | |
12908 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 12909 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
12910 | |
12911 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 12912 | fprintf (file, " [UCODE]"); |
c0e3f241 | 12913 | |
b49e97c9 TS |
12914 | fputc ('\n', file); |
12915 | ||
b34976b6 | 12916 | return TRUE; |
b49e97c9 | 12917 | } |
2f89ff8d | 12918 | |
b35d266b | 12919 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 12920 | { |
0112cd26 NC |
12921 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
12922 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12923 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
12924 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12925 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12926 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
12927 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 12928 | }; |
5e2b0d47 | 12929 | |
8992f0d7 TS |
12930 | /* Merge non visibility st_other attributes. Ensure that the |
12931 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
12932 | definiton of the symbol. */ | |
5e2b0d47 NC |
12933 | void |
12934 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
12935 | const Elf_Internal_Sym *isym, | |
12936 | bfd_boolean definition, | |
12937 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
12938 | { | |
8992f0d7 TS |
12939 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
12940 | { | |
12941 | unsigned char other; | |
12942 | ||
12943 | other = (definition ? isym->st_other : h->other); | |
12944 | other &= ~ELF_ST_VISIBILITY (-1); | |
12945 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
12946 | } | |
12947 | ||
12948 | if (!definition | |
5e2b0d47 NC |
12949 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
12950 | h->other |= STO_OPTIONAL; | |
12951 | } | |
12ac1cf5 NC |
12952 | |
12953 | /* Decide whether an undefined symbol is special and can be ignored. | |
12954 | This is the case for OPTIONAL symbols on IRIX. */ | |
12955 | bfd_boolean | |
12956 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
12957 | { | |
12958 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
12959 | } | |
e0764319 NC |
12960 | |
12961 | bfd_boolean | |
12962 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
12963 | { | |
12964 | return (sym->st_shndx == SHN_COMMON | |
12965 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
12966 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
12967 | } | |
861fb55a DJ |
12968 | |
12969 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
12970 | or (bfd_vma) -1 if it should not be included. */ | |
12971 | ||
12972 | bfd_vma | |
12973 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
12974 | const arelent *rel ATTRIBUTE_UNUSED) | |
12975 | { | |
12976 | return (plt->vma | |
12977 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
12978 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
12979 | } | |
12980 | ||
12981 | void | |
12982 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
12983 | { | |
12984 | struct mips_elf_link_hash_table *htab; | |
12985 | Elf_Internal_Ehdr *i_ehdrp; | |
12986 | ||
12987 | i_ehdrp = elf_elfheader (abfd); | |
12988 | if (link_info) | |
12989 | { | |
12990 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 NC |
12991 | BFD_ASSERT (htab != NULL); |
12992 | ||
861fb55a DJ |
12993 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
12994 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
12995 | } | |
12996 | } |