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b49e97c9 | 1 | /* MIPS-specific support for ELF |
64543e1a | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
e407c74b | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
58238693 | 4 | Free Software Foundation, Inc. |
b49e97c9 TS |
5 | |
6 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
7 | <ian@cygnus.com>. | |
8 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. | |
9 | <mark@codesourcery.com> | |
10 | Traditional MIPS targets support added by Koundinya.K, Dansk Data | |
11 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
12 | ||
ae9a127f | 13 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 14 | |
ae9a127f NC |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 17 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 18 | (at your option) any later version. |
b49e97c9 | 19 | |
ae9a127f NC |
20 | This program is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
b49e97c9 | 24 | |
ae9a127f NC |
25 | You should have received a copy of the GNU General Public License |
26 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
27 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
28 | MA 02110-1301, USA. */ | |
29 | ||
b49e97c9 TS |
30 | |
31 | /* This file handles functionality common to the different MIPS ABI's. */ | |
32 | ||
b49e97c9 | 33 | #include "sysdep.h" |
3db64b00 | 34 | #include "bfd.h" |
b49e97c9 | 35 | #include "libbfd.h" |
64543e1a | 36 | #include "libiberty.h" |
b49e97c9 TS |
37 | #include "elf-bfd.h" |
38 | #include "elfxx-mips.h" | |
39 | #include "elf/mips.h" | |
0a44bf69 | 40 | #include "elf-vxworks.h" |
b49e97c9 TS |
41 | |
42 | /* Get the ECOFF swapping routines. */ | |
43 | #include "coff/sym.h" | |
44 | #include "coff/symconst.h" | |
45 | #include "coff/ecoff.h" | |
46 | #include "coff/mips.h" | |
47 | ||
b15e6682 AO |
48 | #include "hashtab.h" |
49 | ||
ead49a57 RS |
50 | /* This structure is used to hold information about one GOT entry. |
51 | There are three types of entry: | |
52 | ||
53 | (1) absolute addresses | |
54 | (abfd == NULL) | |
55 | (2) SYMBOL + OFFSET addresses, where SYMBOL is local to an input bfd | |
56 | (abfd != NULL, symndx >= 0) | |
020d7251 | 57 | (3) SYMBOL addresses, where SYMBOL is not local to an input bfd |
ead49a57 RS |
58 | (abfd != NULL, symndx == -1) |
59 | ||
60 | Type (3) entries are treated differently for different types of GOT. | |
61 | In the "master" GOT -- i.e. the one that describes every GOT | |
62 | reference needed in the link -- the mips_got_entry is keyed on both | |
63 | the symbol and the input bfd that references it. If it turns out | |
64 | that we need multiple GOTs, we can then use this information to | |
65 | create separate GOTs for each input bfd. | |
66 | ||
67 | However, we want each of these separate GOTs to have at most one | |
68 | entry for a given symbol, so their type (3) entries are keyed only | |
69 | on the symbol. The input bfd given by the "abfd" field is somewhat | |
70 | arbitrary in this case. | |
71 | ||
72 | This means that when there are multiple GOTs, each GOT has a unique | |
73 | mips_got_entry for every symbol within it. We can therefore use the | |
74 | mips_got_entry fields (tls_type and gotidx) to track the symbol's | |
75 | GOT index. | |
76 | ||
77 | However, if it turns out that we need only a single GOT, we continue | |
78 | to use the master GOT to describe it. There may therefore be several | |
79 | mips_got_entries for the same symbol, each with a different input bfd. | |
80 | We want to make sure that each symbol gets a unique GOT entry, so when | |
81 | there's a single GOT, we use the symbol's hash entry, not the | |
82 | mips_got_entry fields, to track a symbol's GOT index. */ | |
b15e6682 AO |
83 | struct mips_got_entry |
84 | { | |
85 | /* The input bfd in which the symbol is defined. */ | |
86 | bfd *abfd; | |
f4416af6 AO |
87 | /* The index of the symbol, as stored in the relocation r_info, if |
88 | we have a local symbol; -1 otherwise. */ | |
89 | long symndx; | |
90 | union | |
91 | { | |
92 | /* If abfd == NULL, an address that must be stored in the got. */ | |
93 | bfd_vma address; | |
94 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
95 | that should be added to the symbol value. */ | |
96 | bfd_vma addend; | |
97 | /* If abfd != NULL && symndx == -1, the hash table entry | |
020d7251 RS |
98 | corresponding to symbol in the GOT. The symbol's entry |
99 | is in the local area if h->global_got_area is GGA_NONE, | |
100 | otherwise it is in the global area. */ | |
f4416af6 AO |
101 | struct mips_elf_link_hash_entry *h; |
102 | } d; | |
0f20cc35 DJ |
103 | |
104 | /* The TLS types included in this GOT entry (specifically, GD and | |
105 | IE). The GD and IE flags can be added as we encounter new | |
106 | relocations. LDM can also be set; it will always be alone, not | |
107 | combined with any GD or IE flags. An LDM GOT entry will be | |
108 | a local symbol entry with r_symndx == 0. */ | |
109 | unsigned char tls_type; | |
110 | ||
b15e6682 | 111 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
112 | corresponding to this symbol+addend. If it's a global symbol |
113 | whose offset is yet to be decided, it's going to be -1. */ | |
114 | long gotidx; | |
b15e6682 AO |
115 | }; |
116 | ||
c224138d RS |
117 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
118 | The structures form a non-overlapping list that is sorted by increasing | |
119 | MIN_ADDEND. */ | |
120 | struct mips_got_page_range | |
121 | { | |
122 | struct mips_got_page_range *next; | |
123 | bfd_signed_vma min_addend; | |
124 | bfd_signed_vma max_addend; | |
125 | }; | |
126 | ||
127 | /* This structure describes the range of addends that are applied to page | |
128 | relocations against a given symbol. */ | |
129 | struct mips_got_page_entry | |
130 | { | |
131 | /* The input bfd in which the symbol is defined. */ | |
132 | bfd *abfd; | |
133 | /* The index of the symbol, as stored in the relocation r_info. */ | |
134 | long symndx; | |
135 | /* The ranges for this page entry. */ | |
136 | struct mips_got_page_range *ranges; | |
137 | /* The maximum number of page entries needed for RANGES. */ | |
138 | bfd_vma num_pages; | |
139 | }; | |
140 | ||
f0abc2a1 | 141 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
142 | |
143 | struct mips_got_info | |
144 | { | |
b49e97c9 TS |
145 | /* The number of global .got entries. */ |
146 | unsigned int global_gotno; | |
23cc69b6 RS |
147 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
148 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
149 | /* The number of .got slots used for TLS. */ |
150 | unsigned int tls_gotno; | |
151 | /* The first unused TLS .got entry. Used only during | |
152 | mips_elf_initialize_tls_index. */ | |
153 | unsigned int tls_assigned_gotno; | |
c224138d | 154 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 155 | unsigned int local_gotno; |
c224138d RS |
156 | /* The maximum number of page entries needed. */ |
157 | unsigned int page_gotno; | |
b49e97c9 TS |
158 | /* The number of local .got entries we have used. */ |
159 | unsigned int assigned_gotno; | |
b15e6682 AO |
160 | /* A hash table holding members of the got. */ |
161 | struct htab *got_entries; | |
c224138d RS |
162 | /* A hash table of mips_got_page_entry structures. */ |
163 | struct htab *got_page_entries; | |
f4416af6 AO |
164 | /* A hash table mapping input bfds to other mips_got_info. NULL |
165 | unless multi-got was necessary. */ | |
166 | struct htab *bfd2got; | |
167 | /* In multi-got links, a pointer to the next got (err, rather, most | |
168 | of the time, it points to the previous got). */ | |
169 | struct mips_got_info *next; | |
0f20cc35 DJ |
170 | /* This is the GOT index of the TLS LDM entry for the GOT, MINUS_ONE |
171 | for none, or MINUS_TWO for not yet assigned. This is needed | |
172 | because a single-GOT link may have multiple hash table entries | |
173 | for the LDM. It does not get initialized in multi-GOT mode. */ | |
174 | bfd_vma tls_ldm_offset; | |
f4416af6 AO |
175 | }; |
176 | ||
177 | /* Map an input bfd to a got in a multi-got link. */ | |
178 | ||
91d6fa6a NC |
179 | struct mips_elf_bfd2got_hash |
180 | { | |
f4416af6 AO |
181 | bfd *bfd; |
182 | struct mips_got_info *g; | |
183 | }; | |
184 | ||
185 | /* Structure passed when traversing the bfd2got hash table, used to | |
186 | create and merge bfd's gots. */ | |
187 | ||
188 | struct mips_elf_got_per_bfd_arg | |
189 | { | |
190 | /* A hashtable that maps bfds to gots. */ | |
191 | htab_t bfd2got; | |
192 | /* The output bfd. */ | |
193 | bfd *obfd; | |
194 | /* The link information. */ | |
195 | struct bfd_link_info *info; | |
196 | /* A pointer to the primary got, i.e., the one that's going to get | |
197 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
198 | DT_MIPS_GOTSYM. */ | |
199 | struct mips_got_info *primary; | |
200 | /* A non-primary got we're trying to merge with other input bfd's | |
201 | gots. */ | |
202 | struct mips_got_info *current; | |
203 | /* The maximum number of got entries that can be addressed with a | |
204 | 16-bit offset. */ | |
205 | unsigned int max_count; | |
c224138d RS |
206 | /* The maximum number of page entries needed by each got. */ |
207 | unsigned int max_pages; | |
0f20cc35 DJ |
208 | /* The total number of global entries which will live in the |
209 | primary got and be automatically relocated. This includes | |
210 | those not referenced by the primary GOT but included in | |
211 | the "master" GOT. */ | |
212 | unsigned int global_count; | |
f4416af6 AO |
213 | }; |
214 | ||
215 | /* Another structure used to pass arguments for got entries traversal. */ | |
216 | ||
217 | struct mips_elf_set_global_got_offset_arg | |
218 | { | |
219 | struct mips_got_info *g; | |
220 | int value; | |
221 | unsigned int needed_relocs; | |
222 | struct bfd_link_info *info; | |
b49e97c9 TS |
223 | }; |
224 | ||
0f20cc35 DJ |
225 | /* A structure used to count TLS relocations or GOT entries, for GOT |
226 | entry or ELF symbol table traversal. */ | |
227 | ||
228 | struct mips_elf_count_tls_arg | |
229 | { | |
230 | struct bfd_link_info *info; | |
231 | unsigned int needed; | |
232 | }; | |
233 | ||
f0abc2a1 AM |
234 | struct _mips_elf_section_data |
235 | { | |
236 | struct bfd_elf_section_data elf; | |
237 | union | |
238 | { | |
f0abc2a1 AM |
239 | bfd_byte *tdata; |
240 | } u; | |
241 | }; | |
242 | ||
243 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 244 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 245 | |
d5eaccd7 RS |
246 | #define is_mips_elf(bfd) \ |
247 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
248 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 249 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 250 | |
634835ae RS |
251 | /* The ABI says that every symbol used by dynamic relocations must have |
252 | a global GOT entry. Among other things, this provides the dynamic | |
253 | linker with a free, directly-indexed cache. The GOT can therefore | |
254 | contain symbols that are not referenced by GOT relocations themselves | |
255 | (in other words, it may have symbols that are not referenced by things | |
256 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
257 | ||
258 | GOT relocations are less likely to overflow if we put the associated | |
259 | GOT entries towards the beginning. We therefore divide the global | |
260 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
261 | the first area can be used for both dynamic relocations and GP-relative | |
262 | accesses, while those in the "reloc-only" area are for dynamic | |
263 | relocations only. | |
264 | ||
265 | These GGA_* ("Global GOT Area") values are organised so that lower | |
266 | values are more general than higher values. Also, non-GGA_NONE | |
267 | values are ordered by the position of the area in the GOT. */ | |
268 | #define GGA_NORMAL 0 | |
269 | #define GGA_RELOC_ONLY 1 | |
270 | #define GGA_NONE 2 | |
271 | ||
861fb55a DJ |
272 | /* Information about a non-PIC interface to a PIC function. There are |
273 | two ways of creating these interfaces. The first is to add: | |
274 | ||
275 | lui $25,%hi(func) | |
276 | addiu $25,$25,%lo(func) | |
277 | ||
278 | immediately before a PIC function "func". The second is to add: | |
279 | ||
280 | lui $25,%hi(func) | |
281 | j func | |
282 | addiu $25,$25,%lo(func) | |
283 | ||
284 | to a separate trampoline section. | |
285 | ||
286 | Stubs of the first kind go in a new section immediately before the | |
287 | target function. Stubs of the second kind go in a single section | |
288 | pointed to by the hash table's "strampoline" field. */ | |
289 | struct mips_elf_la25_stub { | |
290 | /* The generated section that contains this stub. */ | |
291 | asection *stub_section; | |
292 | ||
293 | /* The offset of the stub from the start of STUB_SECTION. */ | |
294 | bfd_vma offset; | |
295 | ||
296 | /* One symbol for the original function. Its location is available | |
297 | in H->root.root.u.def. */ | |
298 | struct mips_elf_link_hash_entry *h; | |
299 | }; | |
300 | ||
301 | /* Macros for populating a mips_elf_la25_stub. */ | |
302 | ||
303 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
304 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
305 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
d21911ea MR |
306 | #define LA25_LUI_MICROMIPS(VAL) \ |
307 | (0x41b90000 | (VAL)) /* lui t9,VAL */ | |
308 | #define LA25_J_MICROMIPS(VAL) \ | |
309 | (0xd4000000 | (((VAL) >> 1) & 0x3ffffff)) /* j VAL */ | |
310 | #define LA25_ADDIU_MICROMIPS(VAL) \ | |
311 | (0x33390000 | (VAL)) /* addiu t9,t9,VAL */ | |
861fb55a | 312 | |
b49e97c9 TS |
313 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
314 | the dynamic symbols. */ | |
315 | ||
316 | struct mips_elf_hash_sort_data | |
317 | { | |
318 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
319 | index. */ | |
320 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
321 | /* The least dynamic symbol table index corresponding to a non-TLS |
322 | symbol with a GOT entry. */ | |
b49e97c9 | 323 | long min_got_dynindx; |
f4416af6 AO |
324 | /* The greatest dynamic symbol table index corresponding to a symbol |
325 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 326 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 327 | long max_unref_got_dynindx; |
b49e97c9 TS |
328 | /* The greatest dynamic symbol table index not corresponding to a |
329 | symbol without a GOT entry. */ | |
330 | long max_non_got_dynindx; | |
331 | }; | |
332 | ||
333 | /* The MIPS ELF linker needs additional information for each symbol in | |
334 | the global hash table. */ | |
335 | ||
336 | struct mips_elf_link_hash_entry | |
337 | { | |
338 | struct elf_link_hash_entry root; | |
339 | ||
340 | /* External symbol information. */ | |
341 | EXTR esym; | |
342 | ||
861fb55a DJ |
343 | /* The la25 stub we have created for ths symbol, if any. */ |
344 | struct mips_elf_la25_stub *la25_stub; | |
345 | ||
b49e97c9 TS |
346 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
347 | this symbol. */ | |
348 | unsigned int possibly_dynamic_relocs; | |
349 | ||
b49e97c9 TS |
350 | /* If there is a stub that 32 bit functions should use to call this |
351 | 16 bit function, this points to the section containing the stub. */ | |
352 | asection *fn_stub; | |
353 | ||
b49e97c9 TS |
354 | /* If there is a stub that 16 bit functions should use to call this |
355 | 32 bit function, this points to the section containing the stub. */ | |
356 | asection *call_stub; | |
357 | ||
358 | /* This is like the call_stub field, but it is used if the function | |
359 | being called returns a floating point value. */ | |
360 | asection *call_fp_stub; | |
7c5fcef7 | 361 | |
0f20cc35 DJ |
362 | #define GOT_NORMAL 0 |
363 | #define GOT_TLS_GD 1 | |
364 | #define GOT_TLS_LDM 2 | |
365 | #define GOT_TLS_IE 4 | |
366 | #define GOT_TLS_OFFSET_DONE 0x40 | |
367 | #define GOT_TLS_DONE 0x80 | |
368 | unsigned char tls_type; | |
71782a75 | 369 | |
0f20cc35 DJ |
370 | /* This is only used in single-GOT mode; in multi-GOT mode there |
371 | is one mips_got_entry per GOT entry, so the offset is stored | |
372 | there. In single-GOT mode there may be many mips_got_entry | |
373 | structures all referring to the same GOT slot. It might be | |
374 | possible to use root.got.offset instead, but that field is | |
375 | overloaded already. */ | |
376 | bfd_vma tls_got_offset; | |
71782a75 | 377 | |
634835ae RS |
378 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
379 | unsigned int global_got_area : 2; | |
380 | ||
6ccf4795 RS |
381 | /* True if all GOT relocations against this symbol are for calls. This is |
382 | a looser condition than no_fn_stub below, because there may be other | |
383 | non-call non-GOT relocations against the symbol. */ | |
384 | unsigned int got_only_for_calls : 1; | |
385 | ||
71782a75 RS |
386 | /* True if one of the relocations described by possibly_dynamic_relocs |
387 | is against a readonly section. */ | |
388 | unsigned int readonly_reloc : 1; | |
389 | ||
861fb55a DJ |
390 | /* True if there is a relocation against this symbol that must be |
391 | resolved by the static linker (in other words, if the relocation | |
392 | cannot possibly be made dynamic). */ | |
393 | unsigned int has_static_relocs : 1; | |
394 | ||
71782a75 RS |
395 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
396 | This is set, for example, if there are relocations related to | |
397 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
398 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
399 | unsigned int no_fn_stub : 1; | |
400 | ||
401 | /* Whether we need the fn_stub; this is true if this symbol appears | |
402 | in any relocs other than a 16 bit call. */ | |
403 | unsigned int need_fn_stub : 1; | |
404 | ||
861fb55a DJ |
405 | /* True if this symbol is referenced by branch relocations from |
406 | any non-PIC input file. This is used to determine whether an | |
407 | la25 stub is required. */ | |
408 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
409 | |
410 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
411 | (as opposed to a PLT entry)? */ | |
412 | unsigned int needs_lazy_stub : 1; | |
b49e97c9 TS |
413 | }; |
414 | ||
415 | /* MIPS ELF linker hash table. */ | |
416 | ||
417 | struct mips_elf_link_hash_table | |
418 | { | |
419 | struct elf_link_hash_table root; | |
861fb55a | 420 | |
b49e97c9 TS |
421 | /* The number of .rtproc entries. */ |
422 | bfd_size_type procedure_count; | |
861fb55a | 423 | |
b49e97c9 TS |
424 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
425 | bfd_size_type compact_rel_size; | |
861fb55a | 426 | |
e6aea42d MR |
427 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic entry |
428 | is set to the address of __rld_obj_head as in IRIX5 and IRIX6. */ | |
b34976b6 | 429 | bfd_boolean use_rld_obj_head; |
861fb55a | 430 | |
b4082c70 DD |
431 | /* The __rld_map or __rld_obj_head symbol. */ |
432 | struct elf_link_hash_entry *rld_symbol; | |
861fb55a | 433 | |
b49e97c9 | 434 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 435 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
436 | |
437 | /* True if we can generate copy relocs and PLTs. */ | |
438 | bfd_boolean use_plts_and_copy_relocs; | |
439 | ||
0a44bf69 RS |
440 | /* True if we're generating code for VxWorks. */ |
441 | bfd_boolean is_vxworks; | |
861fb55a | 442 | |
0e53d9da AN |
443 | /* True if we already reported the small-data section overflow. */ |
444 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 445 | |
0a44bf69 RS |
446 | /* Shortcuts to some dynamic sections, or NULL if they are not |
447 | being used. */ | |
448 | asection *srelbss; | |
449 | asection *sdynbss; | |
450 | asection *srelplt; | |
451 | asection *srelplt2; | |
452 | asection *sgotplt; | |
453 | asection *splt; | |
4e41d0d7 | 454 | asection *sstubs; |
a8028dd0 | 455 | asection *sgot; |
861fb55a | 456 | |
a8028dd0 RS |
457 | /* The master GOT information. */ |
458 | struct mips_got_info *got_info; | |
861fb55a | 459 | |
d222d210 RS |
460 | /* The global symbol in the GOT with the lowest index in the dynamic |
461 | symbol table. */ | |
462 | struct elf_link_hash_entry *global_gotsym; | |
463 | ||
861fb55a | 464 | /* The size of the PLT header in bytes. */ |
0a44bf69 | 465 | bfd_vma plt_header_size; |
861fb55a DJ |
466 | |
467 | /* The size of a PLT entry in bytes. */ | |
0a44bf69 | 468 | bfd_vma plt_entry_size; |
861fb55a | 469 | |
33bb52fb RS |
470 | /* The number of functions that need a lazy-binding stub. */ |
471 | bfd_vma lazy_stub_count; | |
861fb55a | 472 | |
5108fc1b RS |
473 | /* The size of a function stub entry in bytes. */ |
474 | bfd_vma function_stub_size; | |
861fb55a DJ |
475 | |
476 | /* The number of reserved entries at the beginning of the GOT. */ | |
477 | unsigned int reserved_gotno; | |
478 | ||
479 | /* The section used for mips_elf_la25_stub trampolines. | |
480 | See the comment above that structure for details. */ | |
481 | asection *strampoline; | |
482 | ||
483 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
484 | pairs. */ | |
485 | htab_t la25_stubs; | |
486 | ||
487 | /* A function FN (NAME, IS, OS) that creates a new input section | |
488 | called NAME and links it to output section OS. If IS is nonnull, | |
489 | the new section should go immediately before it, otherwise it | |
490 | should go at the (current) beginning of OS. | |
491 | ||
492 | The function returns the new section on success, otherwise it | |
493 | returns null. */ | |
494 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
495 | }; | |
496 | ||
4dfe6ac6 NC |
497 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
498 | ||
499 | #define mips_elf_hash_table(p) \ | |
500 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
501 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
502 | ||
861fb55a | 503 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
504 | struct mips_htab_traverse_info |
505 | { | |
861fb55a DJ |
506 | /* The usual link-wide information. */ |
507 | struct bfd_link_info *info; | |
508 | bfd *output_bfd; | |
509 | ||
510 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
511 | bfd_boolean error; | |
b49e97c9 TS |
512 | }; |
513 | ||
6ae68ba3 MR |
514 | /* MIPS ELF private object data. */ |
515 | ||
516 | struct mips_elf_obj_tdata | |
517 | { | |
518 | /* Generic ELF private object data. */ | |
519 | struct elf_obj_tdata root; | |
520 | ||
521 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
522 | bfd *abi_fp_bfd; | |
523 | }; | |
524 | ||
525 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
526 | ||
527 | #define mips_elf_tdata(bfd) \ | |
528 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
529 | ||
0f20cc35 DJ |
530 | #define TLS_RELOC_P(r_type) \ |
531 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
532 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
533 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
534 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
535 | || r_type == R_MIPS_TLS_GD \ | |
536 | || r_type == R_MIPS_TLS_LDM \ | |
537 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
538 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
539 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
540 | || r_type == R_MIPS_TLS_TPREL32 \ | |
541 | || r_type == R_MIPS_TLS_TPREL64 \ | |
542 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 543 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
544 | || r_type == R_MIPS16_TLS_GD \ |
545 | || r_type == R_MIPS16_TLS_LDM \ | |
546 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
547 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
548 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
549 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
550 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
551 | || r_type == R_MICROMIPS_TLS_GD \ |
552 | || r_type == R_MICROMIPS_TLS_LDM \ | |
553 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
554 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
555 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
556 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
557 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 558 | |
b49e97c9 TS |
559 | /* Structure used to pass information to mips_elf_output_extsym. */ |
560 | ||
561 | struct extsym_info | |
562 | { | |
9e4aeb93 RS |
563 | bfd *abfd; |
564 | struct bfd_link_info *info; | |
b49e97c9 TS |
565 | struct ecoff_debug_info *debug; |
566 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 567 | bfd_boolean failed; |
b49e97c9 TS |
568 | }; |
569 | ||
8dc1a139 | 570 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
571 | |
572 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
573 | { | |
574 | "_procedure_table", | |
575 | "_procedure_string_table", | |
576 | "_procedure_table_size", | |
577 | NULL | |
578 | }; | |
579 | ||
580 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 581 | IRIX5. */ |
b49e97c9 TS |
582 | |
583 | typedef struct | |
584 | { | |
585 | unsigned long id1; /* Always one? */ | |
586 | unsigned long num; /* Number of compact relocation entries. */ | |
587 | unsigned long id2; /* Always two? */ | |
588 | unsigned long offset; /* The file offset of the first relocation. */ | |
589 | unsigned long reserved0; /* Zero? */ | |
590 | unsigned long reserved1; /* Zero? */ | |
591 | } Elf32_compact_rel; | |
592 | ||
593 | typedef struct | |
594 | { | |
595 | bfd_byte id1[4]; | |
596 | bfd_byte num[4]; | |
597 | bfd_byte id2[4]; | |
598 | bfd_byte offset[4]; | |
599 | bfd_byte reserved0[4]; | |
600 | bfd_byte reserved1[4]; | |
601 | } Elf32_External_compact_rel; | |
602 | ||
603 | typedef struct | |
604 | { | |
605 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
606 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
607 | unsigned int dist2to : 8; | |
608 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
609 | unsigned long konst; /* KONST field. See below. */ | |
610 | unsigned long vaddr; /* VADDR to be relocated. */ | |
611 | } Elf32_crinfo; | |
612 | ||
613 | typedef struct | |
614 | { | |
615 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
616 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
617 | unsigned int dist2to : 8; | |
618 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
619 | unsigned long konst; /* KONST field. See below. */ | |
620 | } Elf32_crinfo2; | |
621 | ||
622 | typedef struct | |
623 | { | |
624 | bfd_byte info[4]; | |
625 | bfd_byte konst[4]; | |
626 | bfd_byte vaddr[4]; | |
627 | } Elf32_External_crinfo; | |
628 | ||
629 | typedef struct | |
630 | { | |
631 | bfd_byte info[4]; | |
632 | bfd_byte konst[4]; | |
633 | } Elf32_External_crinfo2; | |
634 | ||
635 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
636 | ||
637 | #define CRINFO_CTYPE (0x1) | |
638 | #define CRINFO_CTYPE_SH (31) | |
639 | #define CRINFO_RTYPE (0xf) | |
640 | #define CRINFO_RTYPE_SH (27) | |
641 | #define CRINFO_DIST2TO (0xff) | |
642 | #define CRINFO_DIST2TO_SH (19) | |
643 | #define CRINFO_RELVADDR (0x7ffff) | |
644 | #define CRINFO_RELVADDR_SH (0) | |
645 | ||
646 | /* A compact relocation info has long (3 words) or short (2 words) | |
647 | formats. A short format doesn't have VADDR field and relvaddr | |
648 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
649 | #define CRF_MIPS_LONG 1 | |
650 | #define CRF_MIPS_SHORT 0 | |
651 | ||
652 | /* There are 4 types of compact relocation at least. The value KONST | |
653 | has different meaning for each type: | |
654 | ||
655 | (type) (konst) | |
656 | CT_MIPS_REL32 Address in data | |
657 | CT_MIPS_WORD Address in word (XXX) | |
658 | CT_MIPS_GPHI_LO GP - vaddr | |
659 | CT_MIPS_JMPAD Address to jump | |
660 | */ | |
661 | ||
662 | #define CRT_MIPS_REL32 0xa | |
663 | #define CRT_MIPS_WORD 0xb | |
664 | #define CRT_MIPS_GPHI_LO 0xc | |
665 | #define CRT_MIPS_JMPAD 0xd | |
666 | ||
667 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
668 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
669 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
670 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
671 | \f | |
672 | /* The structure of the runtime procedure descriptor created by the | |
673 | loader for use by the static exception system. */ | |
674 | ||
675 | typedef struct runtime_pdr { | |
ae9a127f NC |
676 | bfd_vma adr; /* Memory address of start of procedure. */ |
677 | long regmask; /* Save register mask. */ | |
678 | long regoffset; /* Save register offset. */ | |
679 | long fregmask; /* Save floating point register mask. */ | |
680 | long fregoffset; /* Save floating point register offset. */ | |
681 | long frameoffset; /* Frame size. */ | |
682 | short framereg; /* Frame pointer register. */ | |
683 | short pcreg; /* Offset or reg of return pc. */ | |
684 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 685 | long reserved; |
ae9a127f | 686 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
687 | } RPDR, *pRPDR; |
688 | #define cbRPDR sizeof (RPDR) | |
689 | #define rpdNil ((pRPDR) 0) | |
690 | \f | |
b15e6682 | 691 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
692 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
693 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 694 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 695 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
696 | static bfd_vma mips_elf_high |
697 | (bfd_vma); | |
b34976b6 | 698 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
699 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
700 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
701 | bfd_vma *, asection *); | |
9719ad41 RS |
702 | static hashval_t mips_elf_got_entry_hash |
703 | (const void *); | |
f4416af6 | 704 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 705 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 706 | static struct mips_got_info *mips_elf_got_for_ibfd |
9719ad41 | 707 | (struct mips_got_info *, bfd *); |
f4416af6 | 708 | |
b49e97c9 TS |
709 | /* This will be used when we sort the dynamic relocation records. */ |
710 | static bfd *reldyn_sorting_bfd; | |
711 | ||
6d30f5b2 NC |
712 | /* True if ABFD is for CPUs with load interlocking that include |
713 | non-MIPS1 CPUs and R3900. */ | |
714 | #define LOAD_INTERLOCKS_P(abfd) \ | |
715 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
716 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
717 | ||
cd8d5a82 CF |
718 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
719 | This should be safe for all architectures. We enable this predicate | |
720 | for RM9000 for now. */ | |
721 | #define JAL_TO_BAL_P(abfd) \ | |
722 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
723 | ||
724 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
725 | This should be safe for all architectures. We enable this predicate for | |
726 | all CPUs. */ | |
727 | #define JALR_TO_BAL_P(abfd) 1 | |
728 | ||
38a7df63 CF |
729 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
730 | This should be safe for all architectures. We enable this predicate for | |
731 | all CPUs. */ | |
732 | #define JR_TO_B_P(abfd) 1 | |
733 | ||
861fb55a DJ |
734 | /* True if ABFD is a PIC object. */ |
735 | #define PIC_OBJECT_P(abfd) \ | |
736 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
737 | ||
b49e97c9 | 738 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
739 | #define ABI_N32_P(abfd) \ |
740 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
741 | ||
4a14403c | 742 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 743 | #define ABI_64_P(abfd) \ |
141ff970 | 744 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 745 | |
4a14403c TS |
746 | /* Nonzero if ABFD is using NewABI conventions. */ |
747 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
748 | ||
749 | /* The IRIX compatibility level we are striving for. */ | |
b49e97c9 TS |
750 | #define IRIX_COMPAT(abfd) \ |
751 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
752 | ||
b49e97c9 TS |
753 | /* Whether we are trying to be compatible with IRIX at all. */ |
754 | #define SGI_COMPAT(abfd) \ | |
755 | (IRIX_COMPAT (abfd) != ict_none) | |
756 | ||
757 | /* The name of the options section. */ | |
758 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 759 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 760 | |
cc2e31b9 RS |
761 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
762 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
763 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
764 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
765 | ||
943284cc DJ |
766 | /* Whether the section is readonly. */ |
767 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
768 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
769 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
770 | ||
b49e97c9 | 771 | /* The name of the stub section. */ |
ca07892d | 772 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
773 | |
774 | /* The size of an external REL relocation. */ | |
775 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
776 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
777 | ||
0a44bf69 RS |
778 | /* The size of an external RELA relocation. */ |
779 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
780 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
781 | ||
b49e97c9 TS |
782 | /* The size of an external dynamic table entry. */ |
783 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
784 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
785 | ||
786 | /* The size of a GOT entry. */ | |
787 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
788 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
789 | ||
b4082c70 DD |
790 | /* The size of the .rld_map section. */ |
791 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
792 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
793 | ||
b49e97c9 TS |
794 | /* The size of a symbol-table entry. */ |
795 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
796 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
797 | ||
798 | /* The default alignment for sections, as a power of two. */ | |
799 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 800 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
801 | |
802 | /* Get word-sized data. */ | |
803 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
804 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
805 | ||
806 | /* Put out word-sized data. */ | |
807 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
808 | (ABI_64_P (abfd) \ | |
809 | ? bfd_put_64 (abfd, val, ptr) \ | |
810 | : bfd_put_32 (abfd, val, ptr)) | |
811 | ||
861fb55a DJ |
812 | /* The opcode for word-sized loads (LW or LD). */ |
813 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
814 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
815 | ||
b49e97c9 | 816 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 817 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 818 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
819 | |
820 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
821 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
822 | ||
0a44bf69 RS |
823 | /* The name of the dynamic relocation section. */ |
824 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
825 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
826 | ||
b49e97c9 TS |
827 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
828 | from smaller values. Start with zero, widen, *then* decrement. */ | |
829 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 830 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 831 | |
51e38d68 RS |
832 | /* The value to write into got[1] for SVR4 targets, to identify it is |
833 | a GNU object. The dynamic linker can then use got[1] to store the | |
834 | module pointer. */ | |
835 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
836 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
837 | ||
f4416af6 | 838 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
839 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
840 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
841 | |
842 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
843 | offsets from $gp. */ | |
0a44bf69 | 844 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 845 | |
6a691779 | 846 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
847 | #define STUB_LW(abfd) \ |
848 | ((ABI_64_P (abfd) \ | |
849 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
850 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
851 | #define STUB_MOVE(abfd) \ | |
852 | ((ABI_64_P (abfd) \ | |
853 | ? 0x03e0782d /* daddu t7,ra */ \ | |
854 | : 0x03e07821)) /* addu t7,ra */ | |
855 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
856 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
857 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
858 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
859 | #define STUB_LI16S(abfd, VAL) \ |
860 | ((ABI_64_P (abfd) \ | |
861 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
862 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
863 | ||
5108fc1b RS |
864 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
865 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
866 | |
867 | /* The name of the dynamic interpreter. This is put in the .interp | |
868 | section. */ | |
869 | ||
870 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
871 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
872 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
873 | : "/usr/lib/libc.so.1") | |
874 | ||
875 | #ifdef BFD64 | |
ee6423ed AO |
876 | #define MNAME(bfd,pre,pos) \ |
877 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
878 | #define ELF_R_SYM(bfd, i) \ |
879 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
880 | #define ELF_R_TYPE(bfd, i) \ | |
881 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
882 | #define ELF_R_INFO(bfd, s, t) \ | |
883 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
884 | #else | |
ee6423ed | 885 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
886 | #define ELF_R_SYM(bfd, i) \ |
887 | (ELF32_R_SYM (i)) | |
888 | #define ELF_R_TYPE(bfd, i) \ | |
889 | (ELF32_R_TYPE (i)) | |
890 | #define ELF_R_INFO(bfd, s, t) \ | |
891 | (ELF32_R_INFO (s, t)) | |
892 | #endif | |
893 | \f | |
894 | /* The mips16 compiler uses a couple of special sections to handle | |
895 | floating point arguments. | |
896 | ||
897 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
898 | copy floating point arguments from the fp regs to the gp regs and | |
899 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
900 | call should be redirected to the stub instead. If no 32 bit | |
901 | function calls FNNAME, the stub should be discarded. We need to | |
902 | consider any reference to the function, not just a call, because | |
903 | if the address of the function is taken we will need the stub, | |
904 | since the address might be passed to a 32 bit function. | |
905 | ||
906 | Section names that look like .mips16.call.FNNAME contain stubs | |
907 | that copy floating point arguments from the gp regs to the fp | |
908 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
909 | then any 16 bit function that calls FNNAME should be redirected | |
910 | to the stub instead. If FNNAME is not a 32 bit function, the | |
911 | stub should be discarded. | |
912 | ||
913 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
914 | which call FNNAME and then copy the return value from the fp regs | |
915 | to the gp regs. These stubs store the return value in $18 while | |
916 | calling FNNAME; any function which might call one of these stubs | |
917 | must arrange to save $18 around the call. (This case is not | |
918 | needed for 32 bit functions that call 16 bit functions, because | |
919 | 16 bit functions always return floating point values in both | |
920 | $f0/$f1 and $2/$3.) | |
921 | ||
922 | Note that in all cases FNNAME might be defined statically. | |
923 | Therefore, FNNAME is not used literally. Instead, the relocation | |
924 | information will indicate which symbol the section is for. | |
925 | ||
926 | We record any stubs that we find in the symbol table. */ | |
927 | ||
928 | #define FN_STUB ".mips16.fn." | |
929 | #define CALL_STUB ".mips16.call." | |
930 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
931 | |
932 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
933 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
934 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 935 | \f |
861fb55a | 936 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
937 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
938 | { | |
861fb55a DJ |
939 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
940 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
941 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
942 | 0x031cc023, /* subu $24, $24, $28 */ | |
81f5d455 | 943 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
944 | 0x0018c082, /* srl $24, $24, 2 */ |
945 | 0x0320f809, /* jalr $25 */ | |
946 | 0x2718fffe /* subu $24, $24, 2 */ | |
947 | }; | |
948 | ||
949 | /* The format of the first PLT entry in an N32 executable. Different | |
950 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
951 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
952 | { | |
861fb55a DJ |
953 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
954 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
955 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
956 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 957 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
958 | 0x0018c082, /* srl $24, $24, 2 */ |
959 | 0x0320f809, /* jalr $25 */ | |
960 | 0x2718fffe /* subu $24, $24, 2 */ | |
961 | }; | |
962 | ||
963 | /* The format of the first PLT entry in an N64 executable. Different | |
964 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
965 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
966 | { | |
861fb55a DJ |
967 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
968 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
969 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
970 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 971 | 0x03e0782d, /* move $15, $31 # 64-bit move (daddu) */ |
861fb55a DJ |
972 | 0x0018c0c2, /* srl $24, $24, 3 */ |
973 | 0x0320f809, /* jalr $25 */ | |
974 | 0x2718fffe /* subu $24, $24, 2 */ | |
975 | }; | |
976 | ||
977 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
978 | static const bfd_vma mips_exec_plt_entry[] = |
979 | { | |
861fb55a DJ |
980 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
981 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
982 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
983 | 0x03200008 /* jr $25 */ | |
984 | }; | |
985 | ||
0a44bf69 | 986 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
987 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
988 | { | |
0a44bf69 RS |
989 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
990 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
991 | 0x8f390008, /* lw t9, 8(t9) */ | |
992 | 0x00000000, /* nop */ | |
993 | 0x03200008, /* jr t9 */ | |
994 | 0x00000000 /* nop */ | |
995 | }; | |
996 | ||
997 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
998 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
999 | { | |
0a44bf69 RS |
1000 | 0x10000000, /* b .PLT_resolver */ |
1001 | 0x24180000, /* li t8, <pltindex> */ | |
1002 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
1003 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
1004 | 0x8f390000, /* lw t9, 0(t9) */ | |
1005 | 0x00000000, /* nop */ | |
1006 | 0x03200008, /* jr t9 */ | |
1007 | 0x00000000 /* nop */ | |
1008 | }; | |
1009 | ||
1010 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1011 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1012 | { | |
0a44bf69 RS |
1013 | 0x8f990008, /* lw t9, 8(gp) */ |
1014 | 0x00000000, /* nop */ | |
1015 | 0x03200008, /* jr t9 */ | |
1016 | 0x00000000, /* nop */ | |
1017 | 0x00000000, /* nop */ | |
1018 | 0x00000000 /* nop */ | |
1019 | }; | |
1020 | ||
1021 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1022 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1023 | { | |
0a44bf69 RS |
1024 | 0x10000000, /* b .PLT_resolver */ |
1025 | 0x24180000 /* li t8, <pltindex> */ | |
1026 | }; | |
1027 | \f | |
d21911ea MR |
1028 | /* microMIPS 32-bit opcode helper installer. */ |
1029 | ||
1030 | static void | |
1031 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1032 | { | |
1033 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
1034 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); | |
1035 | } | |
1036 | ||
1037 | /* microMIPS 32-bit opcode helper retriever. */ | |
1038 | ||
1039 | static bfd_vma | |
1040 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1041 | { | |
1042 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1043 | } | |
1044 | \f | |
b49e97c9 TS |
1045 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1046 | ||
1047 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1048 | ((struct mips_elf_link_hash_entry *) \ | |
1049 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1050 | (copy), (follow))) | |
1051 | ||
1052 | /* Traverse a MIPS ELF linker hash table. */ | |
1053 | ||
1054 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1055 | (elf_link_hash_traverse \ | |
1056 | (&(table)->root, \ | |
9719ad41 | 1057 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1058 | (info))) |
1059 | ||
0f20cc35 DJ |
1060 | /* Find the base offsets for thread-local storage in this object, |
1061 | for GD/LD and IE/LE respectively. */ | |
1062 | ||
1063 | #define TP_OFFSET 0x7000 | |
1064 | #define DTP_OFFSET 0x8000 | |
1065 | ||
1066 | static bfd_vma | |
1067 | dtprel_base (struct bfd_link_info *info) | |
1068 | { | |
1069 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1070 | if (elf_hash_table (info)->tls_sec == NULL) | |
1071 | return 0; | |
1072 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1073 | } | |
1074 | ||
1075 | static bfd_vma | |
1076 | tprel_base (struct bfd_link_info *info) | |
1077 | { | |
1078 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1079 | if (elf_hash_table (info)->tls_sec == NULL) | |
1080 | return 0; | |
1081 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1082 | } | |
1083 | ||
b49e97c9 TS |
1084 | /* Create an entry in a MIPS ELF linker hash table. */ |
1085 | ||
1086 | static struct bfd_hash_entry * | |
9719ad41 RS |
1087 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1088 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1089 | { |
1090 | struct mips_elf_link_hash_entry *ret = | |
1091 | (struct mips_elf_link_hash_entry *) entry; | |
1092 | ||
1093 | /* Allocate the structure if it has not already been allocated by a | |
1094 | subclass. */ | |
9719ad41 RS |
1095 | if (ret == NULL) |
1096 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1097 | if (ret == NULL) | |
b49e97c9 TS |
1098 | return (struct bfd_hash_entry *) ret; |
1099 | ||
1100 | /* Call the allocation method of the superclass. */ | |
1101 | ret = ((struct mips_elf_link_hash_entry *) | |
1102 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1103 | table, string)); | |
9719ad41 | 1104 | if (ret != NULL) |
b49e97c9 TS |
1105 | { |
1106 | /* Set local fields. */ | |
1107 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1108 | /* We use -2 as a marker to indicate that the information has | |
1109 | not been set. -1 means there is no associated ifd. */ | |
1110 | ret->esym.ifd = -2; | |
861fb55a | 1111 | ret->la25_stub = 0; |
b49e97c9 | 1112 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1113 | ret->fn_stub = NULL; |
b49e97c9 TS |
1114 | ret->call_stub = NULL; |
1115 | ret->call_fp_stub = NULL; | |
71782a75 | 1116 | ret->tls_type = GOT_NORMAL; |
634835ae | 1117 | ret->global_got_area = GGA_NONE; |
6ccf4795 | 1118 | ret->got_only_for_calls = TRUE; |
71782a75 | 1119 | ret->readonly_reloc = FALSE; |
861fb55a | 1120 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1121 | ret->no_fn_stub = FALSE; |
1122 | ret->need_fn_stub = FALSE; | |
861fb55a | 1123 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1124 | ret->needs_lazy_stub = FALSE; |
b49e97c9 TS |
1125 | } |
1126 | ||
1127 | return (struct bfd_hash_entry *) ret; | |
1128 | } | |
f0abc2a1 | 1129 | |
6ae68ba3 MR |
1130 | /* Allocate MIPS ELF private object data. */ |
1131 | ||
1132 | bfd_boolean | |
1133 | _bfd_mips_elf_mkobject (bfd *abfd) | |
1134 | { | |
1135 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1136 | MIPS_ELF_DATA); | |
1137 | } | |
1138 | ||
f0abc2a1 | 1139 | bfd_boolean |
9719ad41 | 1140 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1141 | { |
f592407e AM |
1142 | if (!sec->used_by_bfd) |
1143 | { | |
1144 | struct _mips_elf_section_data *sdata; | |
1145 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1146 | |
f592407e AM |
1147 | sdata = bfd_zalloc (abfd, amt); |
1148 | if (sdata == NULL) | |
1149 | return FALSE; | |
1150 | sec->used_by_bfd = sdata; | |
1151 | } | |
f0abc2a1 AM |
1152 | |
1153 | return _bfd_elf_new_section_hook (abfd, sec); | |
1154 | } | |
b49e97c9 TS |
1155 | \f |
1156 | /* Read ECOFF debugging information from a .mdebug section into a | |
1157 | ecoff_debug_info structure. */ | |
1158 | ||
b34976b6 | 1159 | bfd_boolean |
9719ad41 RS |
1160 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1161 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1162 | { |
1163 | HDRR *symhdr; | |
1164 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1165 | char *ext_hdr; |
b49e97c9 TS |
1166 | |
1167 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1168 | memset (debug, 0, sizeof (*debug)); | |
1169 | ||
9719ad41 | 1170 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1171 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1172 | goto error_return; | |
1173 | ||
9719ad41 | 1174 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1175 | swap->external_hdr_size)) |
b49e97c9 TS |
1176 | goto error_return; |
1177 | ||
1178 | symhdr = &debug->symbolic_header; | |
1179 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1180 | ||
1181 | /* The symbolic header contains absolute file offsets and sizes to | |
1182 | read. */ | |
1183 | #define READ(ptr, offset, count, size, type) \ | |
1184 | if (symhdr->count == 0) \ | |
1185 | debug->ptr = NULL; \ | |
1186 | else \ | |
1187 | { \ | |
1188 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1189 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1190 | if (debug->ptr == NULL) \ |
1191 | goto error_return; \ | |
9719ad41 | 1192 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1193 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1194 | goto error_return; \ | |
1195 | } | |
1196 | ||
1197 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1198 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1199 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1200 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1201 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1202 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1203 | union aux_ext *); | |
1204 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1205 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1206 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1207 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1208 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1209 | #undef READ |
1210 | ||
1211 | debug->fdr = NULL; | |
b49e97c9 | 1212 | |
b34976b6 | 1213 | return TRUE; |
b49e97c9 TS |
1214 | |
1215 | error_return: | |
1216 | if (ext_hdr != NULL) | |
1217 | free (ext_hdr); | |
1218 | if (debug->line != NULL) | |
1219 | free (debug->line); | |
1220 | if (debug->external_dnr != NULL) | |
1221 | free (debug->external_dnr); | |
1222 | if (debug->external_pdr != NULL) | |
1223 | free (debug->external_pdr); | |
1224 | if (debug->external_sym != NULL) | |
1225 | free (debug->external_sym); | |
1226 | if (debug->external_opt != NULL) | |
1227 | free (debug->external_opt); | |
1228 | if (debug->external_aux != NULL) | |
1229 | free (debug->external_aux); | |
1230 | if (debug->ss != NULL) | |
1231 | free (debug->ss); | |
1232 | if (debug->ssext != NULL) | |
1233 | free (debug->ssext); | |
1234 | if (debug->external_fdr != NULL) | |
1235 | free (debug->external_fdr); | |
1236 | if (debug->external_rfd != NULL) | |
1237 | free (debug->external_rfd); | |
1238 | if (debug->external_ext != NULL) | |
1239 | free (debug->external_ext); | |
b34976b6 | 1240 | return FALSE; |
b49e97c9 TS |
1241 | } |
1242 | \f | |
1243 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1244 | ||
1245 | static void | |
9719ad41 | 1246 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1247 | { |
1248 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1249 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1250 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1251 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1252 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1253 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1254 | ||
1255 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1256 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1257 | ||
1258 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1259 | } |
1260 | ||
1261 | /* Create a runtime procedure table from the .mdebug section. */ | |
1262 | ||
b34976b6 | 1263 | static bfd_boolean |
9719ad41 RS |
1264 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1265 | struct bfd_link_info *info, asection *s, | |
1266 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1267 | { |
1268 | const struct ecoff_debug_swap *swap; | |
1269 | HDRR *hdr = &debug->symbolic_header; | |
1270 | RPDR *rpdr, *rp; | |
1271 | struct rpdr_ext *erp; | |
9719ad41 | 1272 | void *rtproc; |
b49e97c9 TS |
1273 | struct pdr_ext *epdr; |
1274 | struct sym_ext *esym; | |
1275 | char *ss, **sv; | |
1276 | char *str; | |
1277 | bfd_size_type size; | |
1278 | bfd_size_type count; | |
1279 | unsigned long sindex; | |
1280 | unsigned long i; | |
1281 | PDR pdr; | |
1282 | SYMR sym; | |
1283 | const char *no_name_func = _("static procedure (no name)"); | |
1284 | ||
1285 | epdr = NULL; | |
1286 | rpdr = NULL; | |
1287 | esym = NULL; | |
1288 | ss = NULL; | |
1289 | sv = NULL; | |
1290 | ||
1291 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1292 | ||
1293 | sindex = strlen (no_name_func) + 1; | |
1294 | count = hdr->ipdMax; | |
1295 | if (count > 0) | |
1296 | { | |
1297 | size = swap->external_pdr_size; | |
1298 | ||
9719ad41 | 1299 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1300 | if (epdr == NULL) |
1301 | goto error_return; | |
1302 | ||
9719ad41 | 1303 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1304 | goto error_return; |
1305 | ||
1306 | size = sizeof (RPDR); | |
9719ad41 | 1307 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1308 | if (rpdr == NULL) |
1309 | goto error_return; | |
1310 | ||
1311 | size = sizeof (char *); | |
9719ad41 | 1312 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1313 | if (sv == NULL) |
1314 | goto error_return; | |
1315 | ||
1316 | count = hdr->isymMax; | |
1317 | size = swap->external_sym_size; | |
9719ad41 | 1318 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1319 | if (esym == NULL) |
1320 | goto error_return; | |
1321 | ||
9719ad41 | 1322 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1323 | goto error_return; |
1324 | ||
1325 | count = hdr->issMax; | |
9719ad41 | 1326 | ss = bfd_malloc (count); |
b49e97c9 TS |
1327 | if (ss == NULL) |
1328 | goto error_return; | |
f075ee0c | 1329 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1330 | goto error_return; |
1331 | ||
1332 | count = hdr->ipdMax; | |
1333 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1334 | { | |
9719ad41 RS |
1335 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1336 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1337 | rp->adr = sym.value; |
1338 | rp->regmask = pdr.regmask; | |
1339 | rp->regoffset = pdr.regoffset; | |
1340 | rp->fregmask = pdr.fregmask; | |
1341 | rp->fregoffset = pdr.fregoffset; | |
1342 | rp->frameoffset = pdr.frameoffset; | |
1343 | rp->framereg = pdr.framereg; | |
1344 | rp->pcreg = pdr.pcreg; | |
1345 | rp->irpss = sindex; | |
1346 | sv[i] = ss + sym.iss; | |
1347 | sindex += strlen (sv[i]) + 1; | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1352 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1353 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1354 | if (rtproc == NULL) |
1355 | { | |
1356 | mips_elf_hash_table (info)->procedure_count = 0; | |
1357 | goto error_return; | |
1358 | } | |
1359 | ||
1360 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1361 | ||
9719ad41 | 1362 | erp = rtproc; |
b49e97c9 TS |
1363 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1364 | erp++; | |
1365 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1366 | strcpy (str, no_name_func); | |
1367 | str += strlen (no_name_func) + 1; | |
1368 | for (i = 0; i < count; i++) | |
1369 | { | |
1370 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1371 | strcpy (str, sv[i]); | |
1372 | str += strlen (sv[i]) + 1; | |
1373 | } | |
1374 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1375 | ||
1376 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1377 | s->size = size; |
9719ad41 | 1378 | s->contents = rtproc; |
b49e97c9 TS |
1379 | |
1380 | /* Skip this section later on (I don't think this currently | |
1381 | matters, but someday it might). */ | |
8423293d | 1382 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1383 | |
1384 | if (epdr != NULL) | |
1385 | free (epdr); | |
1386 | if (rpdr != NULL) | |
1387 | free (rpdr); | |
1388 | if (esym != NULL) | |
1389 | free (esym); | |
1390 | if (ss != NULL) | |
1391 | free (ss); | |
1392 | if (sv != NULL) | |
1393 | free (sv); | |
1394 | ||
b34976b6 | 1395 | return TRUE; |
b49e97c9 TS |
1396 | |
1397 | error_return: | |
1398 | if (epdr != NULL) | |
1399 | free (epdr); | |
1400 | if (rpdr != NULL) | |
1401 | free (rpdr); | |
1402 | if (esym != NULL) | |
1403 | free (esym); | |
1404 | if (ss != NULL) | |
1405 | free (ss); | |
1406 | if (sv != NULL) | |
1407 | free (sv); | |
b34976b6 | 1408 | return FALSE; |
b49e97c9 | 1409 | } |
738e5348 | 1410 | \f |
861fb55a DJ |
1411 | /* We're going to create a stub for H. Create a symbol for the stub's |
1412 | value and size, to help make the disassembly easier to read. */ | |
1413 | ||
1414 | static bfd_boolean | |
1415 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1416 | struct mips_elf_link_hash_entry *h, | |
1417 | const char *prefix, asection *s, bfd_vma value, | |
1418 | bfd_vma size) | |
1419 | { | |
1420 | struct bfd_link_hash_entry *bh; | |
1421 | struct elf_link_hash_entry *elfh; | |
1422 | const char *name; | |
1423 | ||
df58fc94 RS |
1424 | if (ELF_ST_IS_MICROMIPS (h->root.other)) |
1425 | value |= 1; | |
1426 | ||
861fb55a DJ |
1427 | /* Create a new symbol. */ |
1428 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1429 | bh = NULL; | |
1430 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1431 | BSF_LOCAL, s, value, NULL, | |
1432 | TRUE, FALSE, &bh)) | |
1433 | return FALSE; | |
1434 | ||
1435 | /* Make it a local function. */ | |
1436 | elfh = (struct elf_link_hash_entry *) bh; | |
1437 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1438 | elfh->size = size; | |
1439 | elfh->forced_local = 1; | |
1440 | return TRUE; | |
1441 | } | |
1442 | ||
738e5348 RS |
1443 | /* We're about to redefine H. Create a symbol to represent H's |
1444 | current value and size, to help make the disassembly easier | |
1445 | to read. */ | |
1446 | ||
1447 | static bfd_boolean | |
1448 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1449 | struct mips_elf_link_hash_entry *h, | |
1450 | const char *prefix) | |
1451 | { | |
1452 | struct bfd_link_hash_entry *bh; | |
1453 | struct elf_link_hash_entry *elfh; | |
1454 | const char *name; | |
1455 | asection *s; | |
1456 | bfd_vma value; | |
1457 | ||
1458 | /* Read the symbol's value. */ | |
1459 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1460 | || h->root.root.type == bfd_link_hash_defweak); | |
1461 | s = h->root.root.u.def.section; | |
1462 | value = h->root.root.u.def.value; | |
1463 | ||
1464 | /* Create a new symbol. */ | |
1465 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1466 | bh = NULL; | |
1467 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1468 | BSF_LOCAL, s, value, NULL, | |
1469 | TRUE, FALSE, &bh)) | |
1470 | return FALSE; | |
1471 | ||
1472 | /* Make it local and copy the other attributes from H. */ | |
1473 | elfh = (struct elf_link_hash_entry *) bh; | |
1474 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1475 | elfh->other = h->root.other; | |
1476 | elfh->size = h->root.size; | |
1477 | elfh->forced_local = 1; | |
1478 | return TRUE; | |
1479 | } | |
1480 | ||
1481 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1482 | function rather than to a hard-float stub. */ | |
1483 | ||
1484 | static bfd_boolean | |
1485 | section_allows_mips16_refs_p (asection *section) | |
1486 | { | |
1487 | const char *name; | |
1488 | ||
1489 | name = bfd_get_section_name (section->owner, section); | |
1490 | return (FN_STUB_P (name) | |
1491 | || CALL_STUB_P (name) | |
1492 | || CALL_FP_STUB_P (name) | |
1493 | || strcmp (name, ".pdr") == 0); | |
1494 | } | |
1495 | ||
1496 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1497 | stub section of some kind. Return the R_SYMNDX of the target | |
1498 | function, or 0 if we can't decide which function that is. */ | |
1499 | ||
1500 | static unsigned long | |
cb4437b8 MR |
1501 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1502 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1503 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1504 | const Elf_Internal_Rela *relend) |
1505 | { | |
cb4437b8 | 1506 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1507 | const Elf_Internal_Rela *rel; |
1508 | ||
cb4437b8 MR |
1509 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1510 | one in a compound relocation. */ | |
1511 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1512 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1513 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1514 | ||
1515 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1516 | the traditional behavior. */ | |
1517 | if (relocs < relend) | |
1518 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1519 | ||
1520 | return 0; | |
1521 | } | |
b49e97c9 TS |
1522 | |
1523 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1524 | discard them. */ | |
1525 | ||
861fb55a DJ |
1526 | static void |
1527 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1528 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1529 | { |
738e5348 RS |
1530 | /* Dynamic symbols must use the standard call interface, in case other |
1531 | objects try to call them. */ | |
1532 | if (h->fn_stub != NULL | |
1533 | && h->root.dynindx != -1) | |
1534 | { | |
1535 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1536 | h->need_fn_stub = TRUE; | |
1537 | } | |
1538 | ||
b49e97c9 TS |
1539 | if (h->fn_stub != NULL |
1540 | && ! h->need_fn_stub) | |
1541 | { | |
1542 | /* We don't need the fn_stub; the only references to this symbol | |
1543 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1544 | being included in the link. */ | |
eea6121a | 1545 | h->fn_stub->size = 0; |
b49e97c9 TS |
1546 | h->fn_stub->flags &= ~SEC_RELOC; |
1547 | h->fn_stub->reloc_count = 0; | |
1548 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1549 | } | |
1550 | ||
1551 | if (h->call_stub != NULL | |
30c09090 | 1552 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1553 | { |
1554 | /* We don't need the call_stub; this is a 16 bit function, so | |
1555 | calls from other 16 bit functions are OK. Clobber the size | |
1556 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1557 | h->call_stub->size = 0; |
b49e97c9 TS |
1558 | h->call_stub->flags &= ~SEC_RELOC; |
1559 | h->call_stub->reloc_count = 0; | |
1560 | h->call_stub->flags |= SEC_EXCLUDE; | |
1561 | } | |
1562 | ||
1563 | if (h->call_fp_stub != NULL | |
30c09090 | 1564 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1565 | { |
1566 | /* We don't need the call_stub; this is a 16 bit function, so | |
1567 | calls from other 16 bit functions are OK. Clobber the size | |
1568 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1569 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1570 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1571 | h->call_fp_stub->reloc_count = 0; | |
1572 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1573 | } | |
861fb55a DJ |
1574 | } |
1575 | ||
1576 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1577 | ||
1578 | static hashval_t | |
1579 | mips_elf_la25_stub_hash (const void *entry_) | |
1580 | { | |
1581 | const struct mips_elf_la25_stub *entry; | |
1582 | ||
1583 | entry = (struct mips_elf_la25_stub *) entry_; | |
1584 | return entry->h->root.root.u.def.section->id | |
1585 | + entry->h->root.root.u.def.value; | |
1586 | } | |
1587 | ||
1588 | static int | |
1589 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1590 | { | |
1591 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1592 | ||
1593 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1594 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1595 | return ((entry1->h->root.root.u.def.section | |
1596 | == entry2->h->root.root.u.def.section) | |
1597 | && (entry1->h->root.root.u.def.value | |
1598 | == entry2->h->root.root.u.def.value)); | |
1599 | } | |
1600 | ||
1601 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1602 | the linker's implementation of add_stub_function. Return true on | |
1603 | success. */ | |
1604 | ||
1605 | bfd_boolean | |
1606 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1607 | asection *(*fn) (const char *, asection *, | |
1608 | asection *)) | |
1609 | { | |
1610 | struct mips_elf_link_hash_table *htab; | |
1611 | ||
1612 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1613 | if (htab == NULL) |
1614 | return FALSE; | |
1615 | ||
861fb55a DJ |
1616 | htab->add_stub_section = fn; |
1617 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1618 | mips_elf_la25_stub_eq, NULL); | |
1619 | if (htab->la25_stubs == NULL) | |
1620 | return FALSE; | |
1621 | ||
1622 | return TRUE; | |
1623 | } | |
1624 | ||
1625 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1626 | that it or its fn_stub might need $25 to be valid on entry. |
1627 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1628 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1629 | entry points are of interest here. */ | |
861fb55a DJ |
1630 | |
1631 | static bfd_boolean | |
1632 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1633 | { | |
1634 | return ((h->root.root.type == bfd_link_hash_defined | |
1635 | || h->root.root.type == bfd_link_hash_defweak) | |
1636 | && h->root.def_regular | |
1637 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
8f0c309a CLT |
1638 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1639 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1640 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1641 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1642 | } | |
1643 | ||
8f0c309a CLT |
1644 | /* Set *SEC to the input section that contains the target of STUB. |
1645 | Return the offset of the target from the start of that section. */ | |
1646 | ||
1647 | static bfd_vma | |
1648 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1649 | asection **sec) | |
1650 | { | |
1651 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1652 | { | |
1653 | BFD_ASSERT (stub->h->need_fn_stub); | |
1654 | *sec = stub->h->fn_stub; | |
1655 | return 0; | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | *sec = stub->h->root.root.u.def.section; | |
1660 | return stub->h->root.root.u.def.value; | |
1661 | } | |
1662 | } | |
1663 | ||
861fb55a DJ |
1664 | /* STUB describes an la25 stub that we have decided to implement |
1665 | by inserting an LUI/ADDIU pair before the target function. | |
1666 | Create the section and redirect the function symbol to it. */ | |
1667 | ||
1668 | static bfd_boolean | |
1669 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1670 | struct bfd_link_info *info) | |
1671 | { | |
1672 | struct mips_elf_link_hash_table *htab; | |
1673 | char *name; | |
1674 | asection *s, *input_section; | |
1675 | unsigned int align; | |
1676 | ||
1677 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1678 | if (htab == NULL) |
1679 | return FALSE; | |
861fb55a DJ |
1680 | |
1681 | /* Create a unique name for the new section. */ | |
1682 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1683 | if (name == NULL) | |
1684 | return FALSE; | |
1685 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1686 | ||
1687 | /* Create the section. */ | |
8f0c309a | 1688 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1689 | s = htab->add_stub_section (name, input_section, |
1690 | input_section->output_section); | |
1691 | if (s == NULL) | |
1692 | return FALSE; | |
1693 | ||
1694 | /* Make sure that any padding goes before the stub. */ | |
1695 | align = input_section->alignment_power; | |
1696 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1697 | return FALSE; | |
1698 | if (align > 3) | |
1699 | s->size = (1 << align) - 8; | |
1700 | ||
1701 | /* Create a symbol for the stub. */ | |
1702 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1703 | stub->stub_section = s; | |
1704 | stub->offset = s->size; | |
1705 | ||
1706 | /* Allocate room for it. */ | |
1707 | s->size += 8; | |
1708 | return TRUE; | |
1709 | } | |
1710 | ||
1711 | /* STUB describes an la25 stub that we have decided to implement | |
1712 | with a separate trampoline. Allocate room for it and redirect | |
1713 | the function symbol to it. */ | |
1714 | ||
1715 | static bfd_boolean | |
1716 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1717 | struct bfd_link_info *info) | |
1718 | { | |
1719 | struct mips_elf_link_hash_table *htab; | |
1720 | asection *s; | |
1721 | ||
1722 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1723 | if (htab == NULL) |
1724 | return FALSE; | |
861fb55a DJ |
1725 | |
1726 | /* Create a trampoline section, if we haven't already. */ | |
1727 | s = htab->strampoline; | |
1728 | if (s == NULL) | |
1729 | { | |
1730 | asection *input_section = stub->h->root.root.u.def.section; | |
1731 | s = htab->add_stub_section (".text", NULL, | |
1732 | input_section->output_section); | |
1733 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1734 | return FALSE; | |
1735 | htab->strampoline = s; | |
1736 | } | |
1737 | ||
1738 | /* Create a symbol for the stub. */ | |
1739 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1740 | stub->stub_section = s; | |
1741 | stub->offset = s->size; | |
1742 | ||
1743 | /* Allocate room for it. */ | |
1744 | s->size += 16; | |
1745 | return TRUE; | |
1746 | } | |
1747 | ||
1748 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1749 | appropriate stub exists and point H at it. */ | |
1750 | ||
1751 | static bfd_boolean | |
1752 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1753 | struct mips_elf_link_hash_entry *h) | |
1754 | { | |
1755 | struct mips_elf_link_hash_table *htab; | |
1756 | struct mips_elf_la25_stub search, *stub; | |
1757 | bfd_boolean use_trampoline_p; | |
1758 | asection *s; | |
1759 | bfd_vma value; | |
1760 | void **slot; | |
1761 | ||
861fb55a DJ |
1762 | /* Describe the stub we want. */ |
1763 | search.stub_section = NULL; | |
1764 | search.offset = 0; | |
1765 | search.h = h; | |
1766 | ||
1767 | /* See if we've already created an equivalent stub. */ | |
1768 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1769 | if (htab == NULL) |
1770 | return FALSE; | |
1771 | ||
861fb55a DJ |
1772 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1773 | if (slot == NULL) | |
1774 | return FALSE; | |
1775 | ||
1776 | stub = (struct mips_elf_la25_stub *) *slot; | |
1777 | if (stub != NULL) | |
1778 | { | |
1779 | /* We can reuse the existing stub. */ | |
1780 | h->la25_stub = stub; | |
1781 | return TRUE; | |
1782 | } | |
1783 | ||
1784 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1785 | stub = bfd_malloc (sizeof (search)); | |
1786 | if (stub == NULL) | |
1787 | return FALSE; | |
1788 | *stub = search; | |
1789 | *slot = stub; | |
1790 | ||
8f0c309a CLT |
1791 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
1792 | of the section and if we would need no more than 2 nops. */ | |
1793 | value = mips_elf_get_la25_target (stub, &s); | |
1794 | use_trampoline_p = (value != 0 || s->alignment_power > 4); | |
1795 | ||
861fb55a DJ |
1796 | h->la25_stub = stub; |
1797 | return (use_trampoline_p | |
1798 | ? mips_elf_add_la25_trampoline (stub, info) | |
1799 | : mips_elf_add_la25_intro (stub, info)); | |
1800 | } | |
1801 | ||
1802 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1803 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1804 | ||
1805 | static bfd_boolean | |
1806 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1807 | { | |
1808 | struct mips_htab_traverse_info *hti; | |
1809 | ||
1810 | hti = (struct mips_htab_traverse_info *) data; | |
861fb55a DJ |
1811 | if (!hti->info->relocatable) |
1812 | mips_elf_check_mips16_stubs (hti->info, h); | |
b49e97c9 | 1813 | |
861fb55a DJ |
1814 | if (mips_elf_local_pic_function_p (h)) |
1815 | { | |
ba85c43e NC |
1816 | /* PR 12845: If H is in a section that has been garbage |
1817 | collected it will have its output section set to *ABS*. */ | |
1818 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
1819 | return TRUE; | |
1820 | ||
861fb55a DJ |
1821 | /* H is a function that might need $25 to be valid on entry. |
1822 | If we're creating a non-PIC relocatable object, mark H as | |
1823 | being PIC. If we're creating a non-relocatable object with | |
1824 | non-PIC branches and jumps to H, make sure that H has an la25 | |
1825 | stub. */ | |
1826 | if (hti->info->relocatable) | |
1827 | { | |
1828 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
1829 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
1830 | } | |
1831 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
1832 | { | |
1833 | hti->error = TRUE; | |
1834 | return FALSE; | |
1835 | } | |
1836 | } | |
b34976b6 | 1837 | return TRUE; |
b49e97c9 TS |
1838 | } |
1839 | \f | |
d6f16593 MR |
1840 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1841 | Most mips16 instructions are 16 bits, but these instructions | |
1842 | are 32 bits. | |
1843 | ||
1844 | The format of these instructions is: | |
1845 | ||
1846 | +--------------+--------------------------------+ | |
1847 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1848 | +--------------+--------------------------------+ | |
1849 | | Immediate 15:0 | | |
1850 | +-----------------------------------------------+ | |
1851 | ||
1852 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1853 | Note that the immediate value in the first word is swapped. | |
1854 | ||
1855 | When producing a relocatable object file, R_MIPS16_26 is | |
1856 | handled mostly like R_MIPS_26. In particular, the addend is | |
1857 | stored as a straight 26-bit value in a 32-bit instruction. | |
1858 | (gas makes life simpler for itself by never adjusting a | |
1859 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1860 | always zero). However, the 32 bit instruction is stored as 2 | |
1861 | 16-bit values, rather than a single 32-bit value. In a | |
1862 | big-endian file, the result is the same; in a little-endian | |
1863 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1864 | This is so that a disassembler can recognize the jal | |
1865 | instruction. | |
1866 | ||
1867 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1868 | instruction stored as two 16-bit values. The addend A is the | |
1869 | contents of the targ26 field. The calculation is the same as | |
1870 | R_MIPS_26. When storing the calculated value, reorder the | |
1871 | immediate value as shown above, and don't forget to store the | |
1872 | value as two 16-bit values. | |
1873 | ||
1874 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1875 | defined as | |
1876 | ||
1877 | big-endian: | |
1878 | +--------+----------------------+ | |
1879 | | | | | |
1880 | | | targ26-16 | | |
1881 | |31 26|25 0| | |
1882 | +--------+----------------------+ | |
1883 | ||
1884 | little-endian: | |
1885 | +----------+------+-------------+ | |
1886 | | | | | | |
1887 | | sub1 | | sub2 | | |
1888 | |0 9|10 15|16 31| | |
1889 | +----------+--------------------+ | |
1890 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1891 | ((sub1 << 16) | sub2)). | |
1892 | ||
1893 | When producing a relocatable object file, the calculation is | |
1894 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1895 | When producing a fully linked file, the calculation is | |
1896 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1897 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1898 | ||
738e5348 RS |
1899 | The table below lists the other MIPS16 instruction relocations. |
1900 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1901 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1902 | immediate fields: | |
1903 | ||
1904 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1905 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1906 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1907 | R_MIPS16_HI16 R_MIPS_HI16 | |
1908 | R_MIPS16_LO16 R_MIPS_LO16 | |
1909 | ||
1910 | A typical instruction will have a format like this: | |
d6f16593 MR |
1911 | |
1912 | +--------------+--------------------------------+ | |
1913 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1914 | +--------------+--------------------------------+ | |
1915 | | Major | rx | ry | Imm 4:0 | | |
1916 | +--------------+--------------------------------+ | |
1917 | ||
1918 | EXTEND is the five bit value 11110. Major is the instruction | |
1919 | opcode. | |
1920 | ||
738e5348 RS |
1921 | All we need to do here is shuffle the bits appropriately. |
1922 | As above, the two 16-bit halves must be swapped on a | |
1923 | little-endian system. */ | |
1924 | ||
1925 | static inline bfd_boolean | |
1926 | mips16_reloc_p (int r_type) | |
1927 | { | |
1928 | switch (r_type) | |
1929 | { | |
1930 | case R_MIPS16_26: | |
1931 | case R_MIPS16_GPREL: | |
1932 | case R_MIPS16_GOT16: | |
1933 | case R_MIPS16_CALL16: | |
1934 | case R_MIPS16_HI16: | |
1935 | case R_MIPS16_LO16: | |
d0f13682 CLT |
1936 | case R_MIPS16_TLS_GD: |
1937 | case R_MIPS16_TLS_LDM: | |
1938 | case R_MIPS16_TLS_DTPREL_HI16: | |
1939 | case R_MIPS16_TLS_DTPREL_LO16: | |
1940 | case R_MIPS16_TLS_GOTTPREL: | |
1941 | case R_MIPS16_TLS_TPREL_HI16: | |
1942 | case R_MIPS16_TLS_TPREL_LO16: | |
738e5348 RS |
1943 | return TRUE; |
1944 | ||
1945 | default: | |
1946 | return FALSE; | |
1947 | } | |
1948 | } | |
1949 | ||
df58fc94 RS |
1950 | /* Check if a microMIPS reloc. */ |
1951 | ||
1952 | static inline bfd_boolean | |
1953 | micromips_reloc_p (unsigned int r_type) | |
1954 | { | |
1955 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
1956 | } | |
1957 | ||
1958 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
1959 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
1960 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
1961 | ||
1962 | static inline bfd_boolean | |
1963 | micromips_reloc_shuffle_p (unsigned int r_type) | |
1964 | { | |
1965 | return (micromips_reloc_p (r_type) | |
1966 | && r_type != R_MICROMIPS_PC7_S1 | |
1967 | && r_type != R_MICROMIPS_PC10_S1); | |
1968 | } | |
1969 | ||
738e5348 RS |
1970 | static inline bfd_boolean |
1971 | got16_reloc_p (int r_type) | |
1972 | { | |
df58fc94 RS |
1973 | return (r_type == R_MIPS_GOT16 |
1974 | || r_type == R_MIPS16_GOT16 | |
1975 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
1976 | } |
1977 | ||
1978 | static inline bfd_boolean | |
1979 | call16_reloc_p (int r_type) | |
1980 | { | |
df58fc94 RS |
1981 | return (r_type == R_MIPS_CALL16 |
1982 | || r_type == R_MIPS16_CALL16 | |
1983 | || r_type == R_MICROMIPS_CALL16); | |
1984 | } | |
1985 | ||
1986 | static inline bfd_boolean | |
1987 | got_disp_reloc_p (unsigned int r_type) | |
1988 | { | |
1989 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
1990 | } | |
1991 | ||
1992 | static inline bfd_boolean | |
1993 | got_page_reloc_p (unsigned int r_type) | |
1994 | { | |
1995 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
1996 | } | |
1997 | ||
1998 | static inline bfd_boolean | |
1999 | got_ofst_reloc_p (unsigned int r_type) | |
2000 | { | |
2001 | return r_type == R_MIPS_GOT_OFST || r_type == R_MICROMIPS_GOT_OFST; | |
2002 | } | |
2003 | ||
2004 | static inline bfd_boolean | |
2005 | got_hi16_reloc_p (unsigned int r_type) | |
2006 | { | |
2007 | return r_type == R_MIPS_GOT_HI16 || r_type == R_MICROMIPS_GOT_HI16; | |
2008 | } | |
2009 | ||
2010 | static inline bfd_boolean | |
2011 | got_lo16_reloc_p (unsigned int r_type) | |
2012 | { | |
2013 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2014 | } | |
2015 | ||
2016 | static inline bfd_boolean | |
2017 | call_hi16_reloc_p (unsigned int r_type) | |
2018 | { | |
2019 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2020 | } | |
2021 | ||
2022 | static inline bfd_boolean | |
2023 | call_lo16_reloc_p (unsigned int r_type) | |
2024 | { | |
2025 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2026 | } |
2027 | ||
2028 | static inline bfd_boolean | |
2029 | hi16_reloc_p (int r_type) | |
2030 | { | |
df58fc94 RS |
2031 | return (r_type == R_MIPS_HI16 |
2032 | || r_type == R_MIPS16_HI16 | |
2033 | || r_type == R_MICROMIPS_HI16); | |
738e5348 | 2034 | } |
d6f16593 | 2035 | |
738e5348 RS |
2036 | static inline bfd_boolean |
2037 | lo16_reloc_p (int r_type) | |
2038 | { | |
df58fc94 RS |
2039 | return (r_type == R_MIPS_LO16 |
2040 | || r_type == R_MIPS16_LO16 | |
2041 | || r_type == R_MICROMIPS_LO16); | |
738e5348 RS |
2042 | } |
2043 | ||
2044 | static inline bfd_boolean | |
2045 | mips16_call_reloc_p (int r_type) | |
2046 | { | |
2047 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2048 | } | |
d6f16593 | 2049 | |
38a7df63 CF |
2050 | static inline bfd_boolean |
2051 | jal_reloc_p (int r_type) | |
2052 | { | |
df58fc94 RS |
2053 | return (r_type == R_MIPS_26 |
2054 | || r_type == R_MIPS16_26 | |
2055 | || r_type == R_MICROMIPS_26_S1); | |
2056 | } | |
2057 | ||
2058 | static inline bfd_boolean | |
2059 | micromips_branch_reloc_p (int r_type) | |
2060 | { | |
2061 | return (r_type == R_MICROMIPS_26_S1 | |
2062 | || r_type == R_MICROMIPS_PC16_S1 | |
2063 | || r_type == R_MICROMIPS_PC10_S1 | |
2064 | || r_type == R_MICROMIPS_PC7_S1); | |
2065 | } | |
2066 | ||
2067 | static inline bfd_boolean | |
2068 | tls_gd_reloc_p (unsigned int r_type) | |
2069 | { | |
d0f13682 CLT |
2070 | return (r_type == R_MIPS_TLS_GD |
2071 | || r_type == R_MIPS16_TLS_GD | |
2072 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2073 | } |
2074 | ||
2075 | static inline bfd_boolean | |
2076 | tls_ldm_reloc_p (unsigned int r_type) | |
2077 | { | |
d0f13682 CLT |
2078 | return (r_type == R_MIPS_TLS_LDM |
2079 | || r_type == R_MIPS16_TLS_LDM | |
2080 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2081 | } |
2082 | ||
2083 | static inline bfd_boolean | |
2084 | tls_gottprel_reloc_p (unsigned int r_type) | |
2085 | { | |
d0f13682 CLT |
2086 | return (r_type == R_MIPS_TLS_GOTTPREL |
2087 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2088 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2089 | } |
2090 | ||
d6f16593 | 2091 | void |
df58fc94 RS |
2092 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
2093 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2094 | { |
df58fc94 | 2095 | bfd_vma first, second, val; |
d6f16593 | 2096 | |
df58fc94 | 2097 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2098 | return; |
2099 | ||
df58fc94 RS |
2100 | /* Pick up the first and second halfwords of the instruction. */ |
2101 | first = bfd_get_16 (abfd, data); | |
2102 | second = bfd_get_16 (abfd, data + 2); | |
2103 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2104 | val = first << 16 | second; | |
2105 | else if (r_type != R_MIPS16_26) | |
2106 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2107 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2108 | else |
df58fc94 RS |
2109 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2110 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2111 | bfd_put_32 (abfd, val, data); |
2112 | } | |
2113 | ||
2114 | void | |
df58fc94 RS |
2115 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
2116 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2117 | { |
df58fc94 | 2118 | bfd_vma first, second, val; |
d6f16593 | 2119 | |
df58fc94 | 2120 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2121 | return; |
2122 | ||
2123 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2124 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2125 | { |
df58fc94 RS |
2126 | second = val & 0xffff; |
2127 | first = val >> 16; | |
2128 | } | |
2129 | else if (r_type != R_MIPS16_26) | |
2130 | { | |
2131 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2132 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2133 | } |
2134 | else | |
2135 | { | |
df58fc94 RS |
2136 | second = val & 0xffff; |
2137 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2138 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2139 | } |
df58fc94 RS |
2140 | bfd_put_16 (abfd, second, data + 2); |
2141 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2142 | } |
2143 | ||
b49e97c9 | 2144 | bfd_reloc_status_type |
9719ad41 RS |
2145 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2146 | arelent *reloc_entry, asection *input_section, | |
2147 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
2148 | { |
2149 | bfd_vma relocation; | |
a7ebbfdf | 2150 | bfd_signed_vma val; |
30ac9238 | 2151 | bfd_reloc_status_type status; |
b49e97c9 TS |
2152 | |
2153 | if (bfd_is_com_section (symbol->section)) | |
2154 | relocation = 0; | |
2155 | else | |
2156 | relocation = symbol->value; | |
2157 | ||
2158 | relocation += symbol->section->output_section->vma; | |
2159 | relocation += symbol->section->output_offset; | |
2160 | ||
07515404 | 2161 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
2162 | return bfd_reloc_outofrange; |
2163 | ||
b49e97c9 | 2164 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2165 | val = reloc_entry->addend; |
2166 | ||
30ac9238 | 2167 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2168 | |
b49e97c9 | 2169 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2170 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2171 | an external symbol. */ |
1049f94e | 2172 | if (! relocatable |
b49e97c9 TS |
2173 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2174 | val += relocation - gp; | |
2175 | ||
a7ebbfdf TS |
2176 | if (reloc_entry->howto->partial_inplace) |
2177 | { | |
30ac9238 RS |
2178 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2179 | (bfd_byte *) data | |
2180 | + reloc_entry->address); | |
2181 | if (status != bfd_reloc_ok) | |
2182 | return status; | |
a7ebbfdf TS |
2183 | } |
2184 | else | |
2185 | reloc_entry->addend = val; | |
b49e97c9 | 2186 | |
1049f94e | 2187 | if (relocatable) |
b49e97c9 | 2188 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2189 | |
2190 | return bfd_reloc_ok; | |
2191 | } | |
2192 | ||
2193 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2194 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2195 | that contains the relocation field and DATA points to the start of | |
2196 | INPUT_SECTION. */ | |
2197 | ||
2198 | struct mips_hi16 | |
2199 | { | |
2200 | struct mips_hi16 *next; | |
2201 | bfd_byte *data; | |
2202 | asection *input_section; | |
2203 | arelent rel; | |
2204 | }; | |
2205 | ||
2206 | /* FIXME: This should not be a static variable. */ | |
2207 | ||
2208 | static struct mips_hi16 *mips_hi16_list; | |
2209 | ||
2210 | /* A howto special_function for REL *HI16 relocations. We can only | |
2211 | calculate the correct value once we've seen the partnering | |
2212 | *LO16 relocation, so just save the information for later. | |
2213 | ||
2214 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2215 | However, as a GNU extension, we permit an arbitrary number of | |
2216 | *HI16s to be associated with a single *LO16. This significantly | |
2217 | simplies the relocation handling in gcc. */ | |
2218 | ||
2219 | bfd_reloc_status_type | |
2220 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2221 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2222 | asection *input_section, bfd *output_bfd, | |
2223 | char **error_message ATTRIBUTE_UNUSED) | |
2224 | { | |
2225 | struct mips_hi16 *n; | |
2226 | ||
07515404 | 2227 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2228 | return bfd_reloc_outofrange; |
2229 | ||
2230 | n = bfd_malloc (sizeof *n); | |
2231 | if (n == NULL) | |
2232 | return bfd_reloc_outofrange; | |
2233 | ||
2234 | n->next = mips_hi16_list; | |
2235 | n->data = data; | |
2236 | n->input_section = input_section; | |
2237 | n->rel = *reloc_entry; | |
2238 | mips_hi16_list = n; | |
2239 | ||
2240 | if (output_bfd != NULL) | |
2241 | reloc_entry->address += input_section->output_offset; | |
2242 | ||
2243 | return bfd_reloc_ok; | |
2244 | } | |
2245 | ||
738e5348 | 2246 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2247 | like any other 16-bit relocation when applied to global symbols, but is |
2248 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2249 | ||
2250 | bfd_reloc_status_type | |
2251 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2252 | void *data, asection *input_section, | |
2253 | bfd *output_bfd, char **error_message) | |
2254 | { | |
2255 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2256 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2257 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2258 | /* The relocation is against a global symbol. */ | |
2259 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2260 | input_section, output_bfd, | |
2261 | error_message); | |
2262 | ||
2263 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2264 | input_section, output_bfd, error_message); | |
2265 | } | |
2266 | ||
2267 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2268 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2269 | any partnering high-part relocations as well. */ | |
2270 | ||
2271 | bfd_reloc_status_type | |
2272 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2273 | void *data, asection *input_section, | |
2274 | bfd *output_bfd, char **error_message) | |
2275 | { | |
2276 | bfd_vma vallo; | |
d6f16593 | 2277 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2278 | |
07515404 | 2279 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2280 | return bfd_reloc_outofrange; |
2281 | ||
df58fc94 | 2282 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
d6f16593 | 2283 | location); |
df58fc94 RS |
2284 | vallo = bfd_get_32 (abfd, location); |
2285 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2286 | location); | |
d6f16593 | 2287 | |
30ac9238 RS |
2288 | while (mips_hi16_list != NULL) |
2289 | { | |
2290 | bfd_reloc_status_type ret; | |
2291 | struct mips_hi16 *hi; | |
2292 | ||
2293 | hi = mips_hi16_list; | |
2294 | ||
738e5348 RS |
2295 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2296 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2297 | relocation (with a rightshift of 16). However, since GOT16 |
2298 | relocations can also be used with global symbols, their howto | |
2299 | has a rightshift of 0. */ | |
2300 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2301 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2302 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2303 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
df58fc94 RS |
2304 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
2305 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, FALSE); | |
30ac9238 RS |
2306 | |
2307 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2308 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2309 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2310 | ||
30ac9238 RS |
2311 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2312 | hi->input_section, output_bfd, | |
2313 | error_message); | |
2314 | if (ret != bfd_reloc_ok) | |
2315 | return ret; | |
2316 | ||
2317 | mips_hi16_list = hi->next; | |
2318 | free (hi); | |
2319 | } | |
2320 | ||
2321 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2322 | input_section, output_bfd, | |
2323 | error_message); | |
2324 | } | |
2325 | ||
2326 | /* A generic howto special_function. This calculates and installs the | |
2327 | relocation itself, thus avoiding the oft-discussed problems in | |
2328 | bfd_perform_relocation and bfd_install_relocation. */ | |
2329 | ||
2330 | bfd_reloc_status_type | |
2331 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2332 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2333 | asection *input_section, bfd *output_bfd, | |
2334 | char **error_message ATTRIBUTE_UNUSED) | |
2335 | { | |
2336 | bfd_signed_vma val; | |
2337 | bfd_reloc_status_type status; | |
2338 | bfd_boolean relocatable; | |
2339 | ||
2340 | relocatable = (output_bfd != NULL); | |
2341 | ||
07515404 | 2342 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2343 | return bfd_reloc_outofrange; |
2344 | ||
2345 | /* Build up the field adjustment in VAL. */ | |
2346 | val = 0; | |
2347 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2348 | { | |
2349 | /* Either we're calculating the final field value or we have a | |
2350 | relocation against a section symbol. Add in the section's | |
2351 | offset or address. */ | |
2352 | val += symbol->section->output_section->vma; | |
2353 | val += symbol->section->output_offset; | |
2354 | } | |
2355 | ||
2356 | if (!relocatable) | |
2357 | { | |
2358 | /* We're calculating the final field value. Add in the symbol's value | |
2359 | and, if pc-relative, subtract the address of the field itself. */ | |
2360 | val += symbol->value; | |
2361 | if (reloc_entry->howto->pc_relative) | |
2362 | { | |
2363 | val -= input_section->output_section->vma; | |
2364 | val -= input_section->output_offset; | |
2365 | val -= reloc_entry->address; | |
2366 | } | |
2367 | } | |
2368 | ||
2369 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2370 | in the output file, and if the relocation uses a separate addend, | |
2371 | we just need to add VAL to that addend. Otherwise we need to add | |
2372 | VAL to the relocation field itself. */ | |
2373 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2374 | reloc_entry->addend += val; | |
2375 | else | |
2376 | { | |
d6f16593 MR |
2377 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2378 | ||
30ac9238 RS |
2379 | /* Add in the separate addend, if any. */ |
2380 | val += reloc_entry->addend; | |
2381 | ||
2382 | /* Add VAL to the relocation field. */ | |
df58fc94 RS |
2383 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2384 | location); | |
30ac9238 | 2385 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2386 | location); |
df58fc94 RS |
2387 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, |
2388 | location); | |
d6f16593 | 2389 | |
30ac9238 RS |
2390 | if (status != bfd_reloc_ok) |
2391 | return status; | |
2392 | } | |
2393 | ||
2394 | if (relocatable) | |
2395 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2396 | |
2397 | return bfd_reloc_ok; | |
2398 | } | |
2399 | \f | |
2400 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2401 | on the equivalence of the two elements of the union. */ | |
2402 | ||
2403 | static void | |
9719ad41 RS |
2404 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2405 | Elf32_gptab *in) | |
b49e97c9 TS |
2406 | { |
2407 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2408 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2409 | } | |
2410 | ||
2411 | static void | |
9719ad41 RS |
2412 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2413 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2414 | { |
2415 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2416 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2417 | } | |
2418 | ||
2419 | static void | |
9719ad41 RS |
2420 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2421 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2422 | { |
2423 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2424 | H_PUT_32 (abfd, in->num, ex->num); | |
2425 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2426 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2427 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2428 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2429 | } | |
2430 | ||
2431 | static void | |
9719ad41 RS |
2432 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2433 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2434 | { |
2435 | unsigned long l; | |
2436 | ||
2437 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2438 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2439 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2440 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2441 | H_PUT_32 (abfd, l, ex->info); | |
2442 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2443 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2444 | } | |
b49e97c9 TS |
2445 | \f |
2446 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2447 | routines swap this structure in and out. They are used outside of | |
2448 | BFD, so they are globally visible. */ | |
2449 | ||
2450 | void | |
9719ad41 RS |
2451 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2452 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2453 | { |
2454 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2455 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2456 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2457 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2458 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2459 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2460 | } | |
2461 | ||
2462 | void | |
9719ad41 RS |
2463 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2464 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2465 | { |
2466 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2467 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2468 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2469 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2470 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2471 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2472 | } | |
2473 | ||
2474 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2475 | information in an Elf64_Reginfo structure. These routines swap | |
2476 | them in and out. They are globally visible because they are used | |
2477 | outside of BFD. These routines are here so that gas can call them | |
2478 | without worrying about whether the 64 bit ABI has been included. */ | |
2479 | ||
2480 | void | |
9719ad41 RS |
2481 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2482 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2483 | { |
2484 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2485 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2486 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2487 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2488 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2489 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2490 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2491 | } | |
2492 | ||
2493 | void | |
9719ad41 RS |
2494 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2495 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2496 | { |
2497 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2498 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2499 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2500 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2501 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2502 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2503 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2504 | } | |
2505 | ||
2506 | /* Swap in an options header. */ | |
2507 | ||
2508 | void | |
9719ad41 RS |
2509 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2510 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2511 | { |
2512 | in->kind = H_GET_8 (abfd, ex->kind); | |
2513 | in->size = H_GET_8 (abfd, ex->size); | |
2514 | in->section = H_GET_16 (abfd, ex->section); | |
2515 | in->info = H_GET_32 (abfd, ex->info); | |
2516 | } | |
2517 | ||
2518 | /* Swap out an options header. */ | |
2519 | ||
2520 | void | |
9719ad41 RS |
2521 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2522 | Elf_External_Options *ex) | |
b49e97c9 TS |
2523 | { |
2524 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2525 | H_PUT_8 (abfd, in->size, ex->size); | |
2526 | H_PUT_16 (abfd, in->section, ex->section); | |
2527 | H_PUT_32 (abfd, in->info, ex->info); | |
2528 | } | |
2529 | \f | |
2530 | /* This function is called via qsort() to sort the dynamic relocation | |
2531 | entries by increasing r_symndx value. */ | |
2532 | ||
2533 | static int | |
9719ad41 | 2534 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2535 | { |
947216bf AM |
2536 | Elf_Internal_Rela int_reloc1; |
2537 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2538 | int diff; |
b49e97c9 | 2539 | |
947216bf AM |
2540 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2541 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2542 | |
6870500c RS |
2543 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2544 | if (diff != 0) | |
2545 | return diff; | |
2546 | ||
2547 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2548 | return -1; | |
2549 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2550 | return 1; | |
2551 | return 0; | |
b49e97c9 TS |
2552 | } |
2553 | ||
f4416af6 AO |
2554 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2555 | ||
2556 | static int | |
7e3102a7 AM |
2557 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2558 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2559 | { |
7e3102a7 | 2560 | #ifdef BFD64 |
f4416af6 AO |
2561 | Elf_Internal_Rela int_reloc1[3]; |
2562 | Elf_Internal_Rela int_reloc2[3]; | |
2563 | ||
2564 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2565 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2566 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2567 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2568 | ||
6870500c RS |
2569 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2570 | return -1; | |
2571 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2572 | return 1; | |
2573 | ||
2574 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2575 | return -1; | |
2576 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2577 | return 1; | |
2578 | return 0; | |
7e3102a7 AM |
2579 | #else |
2580 | abort (); | |
2581 | #endif | |
f4416af6 AO |
2582 | } |
2583 | ||
2584 | ||
b49e97c9 TS |
2585 | /* This routine is used to write out ECOFF debugging external symbol |
2586 | information. It is called via mips_elf_link_hash_traverse. The | |
2587 | ECOFF external symbol information must match the ELF external | |
2588 | symbol information. Unfortunately, at this point we don't know | |
2589 | whether a symbol is required by reloc information, so the two | |
2590 | tables may wind up being different. We must sort out the external | |
2591 | symbol information before we can set the final size of the .mdebug | |
2592 | section, and we must set the size of the .mdebug section before we | |
2593 | can relocate any sections, and we can't know which symbols are | |
2594 | required by relocation until we relocate the sections. | |
2595 | Fortunately, it is relatively unlikely that any symbol will be | |
2596 | stripped but required by a reloc. In particular, it can not happen | |
2597 | when generating a final executable. */ | |
2598 | ||
b34976b6 | 2599 | static bfd_boolean |
9719ad41 | 2600 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2601 | { |
9719ad41 | 2602 | struct extsym_info *einfo = data; |
b34976b6 | 2603 | bfd_boolean strip; |
b49e97c9 TS |
2604 | asection *sec, *output_section; |
2605 | ||
b49e97c9 | 2606 | if (h->root.indx == -2) |
b34976b6 | 2607 | strip = FALSE; |
f5385ebf | 2608 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2609 | || h->root.ref_dynamic |
2610 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2611 | && !h->root.def_regular |
2612 | && !h->root.ref_regular) | |
b34976b6 | 2613 | strip = TRUE; |
b49e97c9 TS |
2614 | else if (einfo->info->strip == strip_all |
2615 | || (einfo->info->strip == strip_some | |
2616 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2617 | h->root.root.root.string, | |
b34976b6 AM |
2618 | FALSE, FALSE) == NULL)) |
2619 | strip = TRUE; | |
b49e97c9 | 2620 | else |
b34976b6 | 2621 | strip = FALSE; |
b49e97c9 TS |
2622 | |
2623 | if (strip) | |
b34976b6 | 2624 | return TRUE; |
b49e97c9 TS |
2625 | |
2626 | if (h->esym.ifd == -2) | |
2627 | { | |
2628 | h->esym.jmptbl = 0; | |
2629 | h->esym.cobol_main = 0; | |
2630 | h->esym.weakext = 0; | |
2631 | h->esym.reserved = 0; | |
2632 | h->esym.ifd = ifdNil; | |
2633 | h->esym.asym.value = 0; | |
2634 | h->esym.asym.st = stGlobal; | |
2635 | ||
2636 | if (h->root.root.type == bfd_link_hash_undefined | |
2637 | || h->root.root.type == bfd_link_hash_undefweak) | |
2638 | { | |
2639 | const char *name; | |
2640 | ||
2641 | /* Use undefined class. Also, set class and type for some | |
2642 | special symbols. */ | |
2643 | name = h->root.root.root.string; | |
2644 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2645 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2646 | { | |
2647 | h->esym.asym.sc = scData; | |
2648 | h->esym.asym.st = stLabel; | |
2649 | h->esym.asym.value = 0; | |
2650 | } | |
2651 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2652 | { | |
2653 | h->esym.asym.sc = scAbs; | |
2654 | h->esym.asym.st = stLabel; | |
2655 | h->esym.asym.value = | |
2656 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2657 | } | |
4a14403c | 2658 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
2659 | { |
2660 | h->esym.asym.sc = scAbs; | |
2661 | h->esym.asym.st = stLabel; | |
2662 | h->esym.asym.value = elf_gp (einfo->abfd); | |
2663 | } | |
2664 | else | |
2665 | h->esym.asym.sc = scUndefined; | |
2666 | } | |
2667 | else if (h->root.root.type != bfd_link_hash_defined | |
2668 | && h->root.root.type != bfd_link_hash_defweak) | |
2669 | h->esym.asym.sc = scAbs; | |
2670 | else | |
2671 | { | |
2672 | const char *name; | |
2673 | ||
2674 | sec = h->root.root.u.def.section; | |
2675 | output_section = sec->output_section; | |
2676 | ||
2677 | /* When making a shared library and symbol h is the one from | |
2678 | the another shared library, OUTPUT_SECTION may be null. */ | |
2679 | if (output_section == NULL) | |
2680 | h->esym.asym.sc = scUndefined; | |
2681 | else | |
2682 | { | |
2683 | name = bfd_section_name (output_section->owner, output_section); | |
2684 | ||
2685 | if (strcmp (name, ".text") == 0) | |
2686 | h->esym.asym.sc = scText; | |
2687 | else if (strcmp (name, ".data") == 0) | |
2688 | h->esym.asym.sc = scData; | |
2689 | else if (strcmp (name, ".sdata") == 0) | |
2690 | h->esym.asym.sc = scSData; | |
2691 | else if (strcmp (name, ".rodata") == 0 | |
2692 | || strcmp (name, ".rdata") == 0) | |
2693 | h->esym.asym.sc = scRData; | |
2694 | else if (strcmp (name, ".bss") == 0) | |
2695 | h->esym.asym.sc = scBss; | |
2696 | else if (strcmp (name, ".sbss") == 0) | |
2697 | h->esym.asym.sc = scSBss; | |
2698 | else if (strcmp (name, ".init") == 0) | |
2699 | h->esym.asym.sc = scInit; | |
2700 | else if (strcmp (name, ".fini") == 0) | |
2701 | h->esym.asym.sc = scFini; | |
2702 | else | |
2703 | h->esym.asym.sc = scAbs; | |
2704 | } | |
2705 | } | |
2706 | ||
2707 | h->esym.asym.reserved = 0; | |
2708 | h->esym.asym.index = indexNil; | |
2709 | } | |
2710 | ||
2711 | if (h->root.root.type == bfd_link_hash_common) | |
2712 | h->esym.asym.value = h->root.root.u.c.size; | |
2713 | else if (h->root.root.type == bfd_link_hash_defined | |
2714 | || h->root.root.type == bfd_link_hash_defweak) | |
2715 | { | |
2716 | if (h->esym.asym.sc == scCommon) | |
2717 | h->esym.asym.sc = scBss; | |
2718 | else if (h->esym.asym.sc == scSCommon) | |
2719 | h->esym.asym.sc = scSBss; | |
2720 | ||
2721 | sec = h->root.root.u.def.section; | |
2722 | output_section = sec->output_section; | |
2723 | if (output_section != NULL) | |
2724 | h->esym.asym.value = (h->root.root.u.def.value | |
2725 | + sec->output_offset | |
2726 | + output_section->vma); | |
2727 | else | |
2728 | h->esym.asym.value = 0; | |
2729 | } | |
33bb52fb | 2730 | else |
b49e97c9 TS |
2731 | { |
2732 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2733 | |
2734 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2735 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2736 | |
33bb52fb | 2737 | if (hd->needs_lazy_stub) |
b49e97c9 TS |
2738 | { |
2739 | /* Set type and value for a symbol with a function stub. */ | |
2740 | h->esym.asym.st = stProc; | |
2741 | sec = hd->root.root.u.def.section; | |
2742 | if (sec == NULL) | |
2743 | h->esym.asym.value = 0; | |
2744 | else | |
2745 | { | |
2746 | output_section = sec->output_section; | |
2747 | if (output_section != NULL) | |
2748 | h->esym.asym.value = (hd->root.plt.offset | |
2749 | + sec->output_offset | |
2750 | + output_section->vma); | |
2751 | else | |
2752 | h->esym.asym.value = 0; | |
2753 | } | |
b49e97c9 TS |
2754 | } |
2755 | } | |
2756 | ||
2757 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2758 | h->root.root.root.string, | |
2759 | &h->esym)) | |
2760 | { | |
b34976b6 AM |
2761 | einfo->failed = TRUE; |
2762 | return FALSE; | |
b49e97c9 TS |
2763 | } |
2764 | ||
b34976b6 | 2765 | return TRUE; |
b49e97c9 TS |
2766 | } |
2767 | ||
2768 | /* A comparison routine used to sort .gptab entries. */ | |
2769 | ||
2770 | static int | |
9719ad41 | 2771 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2772 | { |
9719ad41 RS |
2773 | const Elf32_gptab *a1 = p1; |
2774 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2775 | |
2776 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2777 | } | |
2778 | \f | |
b15e6682 | 2779 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2780 | |
2781 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2782 | hash number. */ | |
2783 | ||
2784 | static INLINE hashval_t | |
9719ad41 | 2785 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2786 | { |
2787 | #ifdef BFD64 | |
2788 | return addr + (addr >> 32); | |
2789 | #else | |
2790 | return addr; | |
2791 | #endif | |
2792 | } | |
2793 | ||
2794 | /* got_entries only match if they're identical, except for gotidx, so | |
2795 | use all fields to compute the hash, and compare the appropriate | |
2796 | union members. */ | |
2797 | ||
b15e6682 | 2798 | static hashval_t |
9719ad41 | 2799 | mips_elf_got_entry_hash (const void *entry_) |
b15e6682 AO |
2800 | { |
2801 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2802 | ||
38985a1c | 2803 | return entry->symndx |
0f20cc35 | 2804 | + ((entry->tls_type & GOT_TLS_LDM) << 17) |
f4416af6 | 2805 | + (! entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
38985a1c AO |
2806 | : entry->abfd->id |
2807 | + (entry->symndx >= 0 ? mips_elf_hash_bfd_vma (entry->d.addend) | |
2808 | : entry->d.h->root.root.root.hash)); | |
b15e6682 AO |
2809 | } |
2810 | ||
2811 | static int | |
9719ad41 | 2812 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
b15e6682 AO |
2813 | { |
2814 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2815 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2816 | ||
0f20cc35 DJ |
2817 | /* An LDM entry can only match another LDM entry. */ |
2818 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2819 | return 0; | |
2820 | ||
b15e6682 | 2821 | return e1->abfd == e2->abfd && e1->symndx == e2->symndx |
f4416af6 AO |
2822 | && (! e1->abfd ? e1->d.address == e2->d.address |
2823 | : e1->symndx >= 0 ? e1->d.addend == e2->d.addend | |
2824 | : e1->d.h == e2->d.h); | |
2825 | } | |
2826 | ||
2827 | /* multi_got_entries are still a match in the case of global objects, | |
2828 | even if the input bfd in which they're referenced differs, so the | |
2829 | hash computation and compare functions are adjusted | |
2830 | accordingly. */ | |
2831 | ||
2832 | static hashval_t | |
9719ad41 | 2833 | mips_elf_multi_got_entry_hash (const void *entry_) |
f4416af6 AO |
2834 | { |
2835 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2836 | ||
2837 | return entry->symndx | |
2838 | + (! entry->abfd | |
2839 | ? mips_elf_hash_bfd_vma (entry->d.address) | |
2840 | : entry->symndx >= 0 | |
0f20cc35 DJ |
2841 | ? ((entry->tls_type & GOT_TLS_LDM) |
2842 | ? (GOT_TLS_LDM << 17) | |
2843 | : (entry->abfd->id | |
2844 | + mips_elf_hash_bfd_vma (entry->d.addend))) | |
f4416af6 AO |
2845 | : entry->d.h->root.root.root.hash); |
2846 | } | |
2847 | ||
2848 | static int | |
9719ad41 | 2849 | mips_elf_multi_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2850 | { |
2851 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2852 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2853 | ||
0f20cc35 DJ |
2854 | /* Any two LDM entries match. */ |
2855 | if (e1->tls_type & e2->tls_type & GOT_TLS_LDM) | |
2856 | return 1; | |
2857 | ||
2858 | /* Nothing else matches an LDM entry. */ | |
2859 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2860 | return 0; | |
2861 | ||
f4416af6 AO |
2862 | return e1->symndx == e2->symndx |
2863 | && (e1->symndx >= 0 ? e1->abfd == e2->abfd && e1->d.addend == e2->d.addend | |
2864 | : e1->abfd == NULL || e2->abfd == NULL | |
2865 | ? e1->abfd == e2->abfd && e1->d.address == e2->d.address | |
2866 | : e1->d.h == e2->d.h); | |
b15e6682 | 2867 | } |
c224138d RS |
2868 | |
2869 | static hashval_t | |
2870 | mips_got_page_entry_hash (const void *entry_) | |
2871 | { | |
2872 | const struct mips_got_page_entry *entry; | |
2873 | ||
2874 | entry = (const struct mips_got_page_entry *) entry_; | |
2875 | return entry->abfd->id + entry->symndx; | |
2876 | } | |
2877 | ||
2878 | static int | |
2879 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2880 | { | |
2881 | const struct mips_got_page_entry *entry1, *entry2; | |
2882 | ||
2883 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2884 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
2885 | return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx; | |
2886 | } | |
b15e6682 | 2887 | \f |
0a44bf69 RS |
2888 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2889 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2890 | if creation fails. */ | |
f4416af6 AO |
2891 | |
2892 | static asection * | |
0a44bf69 | 2893 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2894 | { |
0a44bf69 | 2895 | const char *dname; |
f4416af6 | 2896 | asection *sreloc; |
0a44bf69 | 2897 | bfd *dynobj; |
f4416af6 | 2898 | |
0a44bf69 RS |
2899 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2900 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 2901 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
2902 | if (sreloc == NULL && create_p) |
2903 | { | |
3d4d4302 AM |
2904 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
2905 | (SEC_ALLOC | |
2906 | | SEC_LOAD | |
2907 | | SEC_HAS_CONTENTS | |
2908 | | SEC_IN_MEMORY | |
2909 | | SEC_LINKER_CREATED | |
2910 | | SEC_READONLY)); | |
f4416af6 | 2911 | if (sreloc == NULL |
f4416af6 | 2912 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2913 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2914 | return NULL; |
2915 | } | |
2916 | return sreloc; | |
2917 | } | |
2918 | ||
0f20cc35 DJ |
2919 | /* Count the number of relocations needed for a TLS GOT entry, with |
2920 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2921 | is NULL). */ | |
2922 | ||
2923 | static int | |
2924 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2925 | struct elf_link_hash_entry *h) | |
2926 | { | |
2927 | int indx = 0; | |
2928 | int ret = 0; | |
2929 | bfd_boolean need_relocs = FALSE; | |
2930 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2931 | ||
2932 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2933 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
2934 | indx = h->dynindx; | |
2935 | ||
2936 | if ((info->shared || indx != 0) | |
2937 | && (h == NULL | |
2938 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2939 | || h->root.type != bfd_link_hash_undefweak)) | |
2940 | need_relocs = TRUE; | |
2941 | ||
2942 | if (!need_relocs) | |
2943 | return FALSE; | |
2944 | ||
2945 | if (tls_type & GOT_TLS_GD) | |
2946 | { | |
2947 | ret++; | |
2948 | if (indx != 0) | |
2949 | ret++; | |
2950 | } | |
2951 | ||
2952 | if (tls_type & GOT_TLS_IE) | |
2953 | ret++; | |
2954 | ||
2955 | if ((tls_type & GOT_TLS_LDM) && info->shared) | |
2956 | ret++; | |
2957 | ||
2958 | return ret; | |
2959 | } | |
2960 | ||
2961 | /* Count the number of TLS relocations required for the GOT entry in | |
2962 | ARG1, if it describes a local symbol. */ | |
2963 | ||
2964 | static int | |
2965 | mips_elf_count_local_tls_relocs (void **arg1, void *arg2) | |
2966 | { | |
2967 | struct mips_got_entry *entry = * (struct mips_got_entry **) arg1; | |
2968 | struct mips_elf_count_tls_arg *arg = arg2; | |
2969 | ||
2970 | if (entry->abfd != NULL && entry->symndx != -1) | |
2971 | arg->needed += mips_tls_got_relocs (arg->info, entry->tls_type, NULL); | |
2972 | ||
2973 | return 1; | |
2974 | } | |
2975 | ||
2976 | /* Count the number of TLS GOT entries required for the global (or | |
2977 | forced-local) symbol in ARG1. */ | |
2978 | ||
2979 | static int | |
2980 | mips_elf_count_global_tls_entries (void *arg1, void *arg2) | |
2981 | { | |
2982 | struct mips_elf_link_hash_entry *hm | |
2983 | = (struct mips_elf_link_hash_entry *) arg1; | |
2984 | struct mips_elf_count_tls_arg *arg = arg2; | |
2985 | ||
1fd20d70 RS |
2986 | if (hm->root.root.type == bfd_link_hash_indirect |
2987 | || hm->root.root.type == bfd_link_hash_warning) | |
2988 | return 1; | |
2989 | ||
0f20cc35 DJ |
2990 | if (hm->tls_type & GOT_TLS_GD) |
2991 | arg->needed += 2; | |
2992 | if (hm->tls_type & GOT_TLS_IE) | |
2993 | arg->needed += 1; | |
2994 | ||
2995 | return 1; | |
2996 | } | |
2997 | ||
2998 | /* Count the number of TLS relocations required for the global (or | |
2999 | forced-local) symbol in ARG1. */ | |
3000 | ||
3001 | static int | |
3002 | mips_elf_count_global_tls_relocs (void *arg1, void *arg2) | |
3003 | { | |
3004 | struct mips_elf_link_hash_entry *hm | |
3005 | = (struct mips_elf_link_hash_entry *) arg1; | |
3006 | struct mips_elf_count_tls_arg *arg = arg2; | |
3007 | ||
1fd20d70 RS |
3008 | if (hm->root.root.type == bfd_link_hash_indirect |
3009 | || hm->root.root.type == bfd_link_hash_warning) | |
3010 | return 1; | |
3011 | ||
0f20cc35 DJ |
3012 | arg->needed += mips_tls_got_relocs (arg->info, hm->tls_type, &hm->root); |
3013 | ||
3014 | return 1; | |
3015 | } | |
3016 | ||
3017 | /* Output a simple dynamic relocation into SRELOC. */ | |
3018 | ||
3019 | static void | |
3020 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3021 | asection *sreloc, | |
861fb55a | 3022 | unsigned long reloc_index, |
0f20cc35 DJ |
3023 | unsigned long indx, |
3024 | int r_type, | |
3025 | bfd_vma offset) | |
3026 | { | |
3027 | Elf_Internal_Rela rel[3]; | |
3028 | ||
3029 | memset (rel, 0, sizeof (rel)); | |
3030 | ||
3031 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3032 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3033 | ||
3034 | if (ABI_64_P (output_bfd)) | |
3035 | { | |
3036 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3037 | (output_bfd, &rel[0], | |
3038 | (sreloc->contents | |
861fb55a | 3039 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3040 | } |
3041 | else | |
3042 | bfd_elf32_swap_reloc_out | |
3043 | (output_bfd, &rel[0], | |
3044 | (sreloc->contents | |
861fb55a | 3045 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3046 | } |
3047 | ||
3048 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3049 | ||
3050 | static void | |
3051 | mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset, | |
3052 | unsigned char *tls_type_p, | |
3053 | struct bfd_link_info *info, | |
3054 | struct mips_elf_link_hash_entry *h, | |
3055 | bfd_vma value) | |
3056 | { | |
23cc69b6 | 3057 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3058 | int indx; |
3059 | asection *sreloc, *sgot; | |
3060 | bfd_vma offset, offset2; | |
0f20cc35 DJ |
3061 | bfd_boolean need_relocs = FALSE; |
3062 | ||
23cc69b6 | 3063 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3064 | if (htab == NULL) |
3065 | return; | |
3066 | ||
23cc69b6 | 3067 | sgot = htab->sgot; |
0f20cc35 DJ |
3068 | |
3069 | indx = 0; | |
3070 | if (h != NULL) | |
3071 | { | |
3072 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3073 | ||
3074 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
3075 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3076 | indx = h->root.dynindx; | |
3077 | } | |
3078 | ||
3079 | if (*tls_type_p & GOT_TLS_DONE) | |
3080 | return; | |
3081 | ||
3082 | if ((info->shared || indx != 0) | |
3083 | && (h == NULL | |
3084 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3085 | || h->root.type != bfd_link_hash_undefweak)) | |
3086 | need_relocs = TRUE; | |
3087 | ||
3088 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3089 | be defined at all; assume that the value doesn't matter in that | |
3090 | case. Otherwise complain if we would use the value. */ | |
3091 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3092 | || h->root.root.type == bfd_link_hash_undefweak); | |
3093 | ||
3094 | /* Emit necessary relocations. */ | |
0a44bf69 | 3095 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
0f20cc35 DJ |
3096 | |
3097 | /* General Dynamic. */ | |
3098 | if (*tls_type_p & GOT_TLS_GD) | |
3099 | { | |
3100 | offset = got_offset; | |
3101 | offset2 = offset + MIPS_ELF_GOT_SIZE (abfd); | |
3102 | ||
3103 | if (need_relocs) | |
3104 | { | |
3105 | mips_elf_output_dynamic_relocation | |
861fb55a | 3106 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3107 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3108 | sgot->output_offset + sgot->output_section->vma + offset); | |
3109 | ||
3110 | if (indx) | |
3111 | mips_elf_output_dynamic_relocation | |
861fb55a | 3112 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3113 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
3114 | sgot->output_offset + sgot->output_section->vma + offset2); | |
3115 | else | |
3116 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
3117 | sgot->contents + offset2); | |
3118 | } | |
3119 | else | |
3120 | { | |
3121 | MIPS_ELF_PUT_WORD (abfd, 1, | |
3122 | sgot->contents + offset); | |
3123 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
3124 | sgot->contents + offset2); | |
3125 | } | |
3126 | ||
3127 | got_offset += 2 * MIPS_ELF_GOT_SIZE (abfd); | |
3128 | } | |
3129 | ||
3130 | /* Initial Exec model. */ | |
3131 | if (*tls_type_p & GOT_TLS_IE) | |
3132 | { | |
3133 | offset = got_offset; | |
3134 | ||
3135 | if (need_relocs) | |
3136 | { | |
3137 | if (indx == 0) | |
3138 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
3139 | sgot->contents + offset); | |
3140 | else | |
3141 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3142 | sgot->contents + offset); | |
3143 | ||
3144 | mips_elf_output_dynamic_relocation | |
861fb55a | 3145 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3146 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
3147 | sgot->output_offset + sgot->output_section->vma + offset); | |
3148 | } | |
3149 | else | |
3150 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
3151 | sgot->contents + offset); | |
3152 | } | |
3153 | ||
3154 | if (*tls_type_p & GOT_TLS_LDM) | |
3155 | { | |
3156 | /* The initial offset is zero, and the LD offsets will include the | |
3157 | bias by DTP_OFFSET. */ | |
3158 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3159 | sgot->contents + got_offset | |
3160 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3161 | ||
3162 | if (!info->shared) | |
3163 | MIPS_ELF_PUT_WORD (abfd, 1, | |
3164 | sgot->contents + got_offset); | |
3165 | else | |
3166 | mips_elf_output_dynamic_relocation | |
861fb55a | 3167 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3168 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3169 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
3170 | } | |
3171 | ||
3172 | *tls_type_p |= GOT_TLS_DONE; | |
3173 | } | |
3174 | ||
3175 | /* Return the GOT index to use for a relocation of type R_TYPE against | |
3176 | a symbol accessed using TLS_TYPE models. The GOT entries for this | |
3177 | symbol in this GOT start at GOT_INDEX. This function initializes the | |
3178 | GOT entries and corresponding relocations. */ | |
3179 | ||
3180 | static bfd_vma | |
3181 | mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type, | |
3182 | int r_type, struct bfd_link_info *info, | |
3183 | struct mips_elf_link_hash_entry *h, bfd_vma symbol) | |
3184 | { | |
df58fc94 RS |
3185 | BFD_ASSERT (tls_gottprel_reloc_p (r_type) |
3186 | || tls_gd_reloc_p (r_type) | |
3187 | || tls_ldm_reloc_p (r_type)); | |
0f20cc35 DJ |
3188 | |
3189 | mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol); | |
3190 | ||
df58fc94 | 3191 | if (tls_gottprel_reloc_p (r_type)) |
0f20cc35 DJ |
3192 | { |
3193 | BFD_ASSERT (*tls_type & GOT_TLS_IE); | |
3194 | if (*tls_type & GOT_TLS_GD) | |
3195 | return got_index + 2 * MIPS_ELF_GOT_SIZE (abfd); | |
3196 | else | |
3197 | return got_index; | |
3198 | } | |
3199 | ||
df58fc94 | 3200 | if (tls_gd_reloc_p (r_type)) |
0f20cc35 DJ |
3201 | { |
3202 | BFD_ASSERT (*tls_type & GOT_TLS_GD); | |
3203 | return got_index; | |
3204 | } | |
3205 | ||
df58fc94 | 3206 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 DJ |
3207 | { |
3208 | BFD_ASSERT (*tls_type & GOT_TLS_LDM); | |
3209 | return got_index; | |
3210 | } | |
3211 | ||
3212 | return got_index; | |
3213 | } | |
3214 | ||
0a44bf69 RS |
3215 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3216 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3217 | will be negative. */ | |
3218 | ||
3219 | static bfd_vma | |
3220 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3221 | struct elf_link_hash_entry *h) | |
3222 | { | |
3223 | bfd_vma plt_index, got_address, got_value; | |
3224 | struct mips_elf_link_hash_table *htab; | |
3225 | ||
3226 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3227 | BFD_ASSERT (htab != NULL); |
3228 | ||
0a44bf69 RS |
3229 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); |
3230 | ||
861fb55a DJ |
3231 | /* This function only works for VxWorks, because a non-VxWorks .got.plt |
3232 | section starts with reserved entries. */ | |
3233 | BFD_ASSERT (htab->is_vxworks); | |
3234 | ||
0a44bf69 RS |
3235 | /* Calculate the index of the symbol's PLT entry. */ |
3236 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
3237 | ||
3238 | /* Calculate the address of the associated .got.plt entry. */ | |
3239 | got_address = (htab->sgotplt->output_section->vma | |
3240 | + htab->sgotplt->output_offset | |
3241 | + plt_index * 4); | |
3242 | ||
3243 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3244 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3245 | + htab->root.hgot->root.u.def.section->output_offset | |
3246 | + htab->root.hgot->root.u.def.value); | |
3247 | ||
3248 | return got_address - got_value; | |
3249 | } | |
3250 | ||
5c18022e | 3251 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3252 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3253 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3254 | offset can be found. */ | |
b49e97c9 TS |
3255 | |
3256 | static bfd_vma | |
9719ad41 | 3257 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3258 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3259 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3260 | { |
a8028dd0 | 3261 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3262 | struct mips_got_entry *entry; |
b49e97c9 | 3263 | |
a8028dd0 | 3264 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3265 | BFD_ASSERT (htab != NULL); |
3266 | ||
a8028dd0 RS |
3267 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3268 | r_symndx, h, r_type); | |
0f20cc35 | 3269 | if (!entry) |
b15e6682 | 3270 | return MINUS_ONE; |
0f20cc35 DJ |
3271 | |
3272 | if (TLS_RELOC_P (r_type)) | |
ead49a57 | 3273 | { |
a8028dd0 | 3274 | if (entry->symndx == -1 && htab->got_info->next == NULL) |
ead49a57 RS |
3275 | /* A type (3) entry in the single-GOT case. We use the symbol's |
3276 | hash table entry to track the index. */ | |
3277 | return mips_tls_got_index (abfd, h->tls_got_offset, &h->tls_type, | |
3278 | r_type, info, h, value); | |
3279 | else | |
3280 | return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type, | |
3281 | r_type, info, h, value); | |
3282 | } | |
0f20cc35 DJ |
3283 | else |
3284 | return entry->gotidx; | |
b49e97c9 TS |
3285 | } |
3286 | ||
3287 | /* Returns the GOT index for the global symbol indicated by H. */ | |
3288 | ||
3289 | static bfd_vma | |
0f20cc35 DJ |
3290 | mips_elf_global_got_index (bfd *abfd, bfd *ibfd, struct elf_link_hash_entry *h, |
3291 | int r_type, struct bfd_link_info *info) | |
b49e97c9 | 3292 | { |
a8028dd0 | 3293 | struct mips_elf_link_hash_table *htab; |
91d6fa6a | 3294 | bfd_vma got_index; |
f4416af6 | 3295 | struct mips_got_info *g, *gg; |
d0c7ff07 | 3296 | long global_got_dynindx = 0; |
b49e97c9 | 3297 | |
a8028dd0 | 3298 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3299 | BFD_ASSERT (htab != NULL); |
3300 | ||
a8028dd0 | 3301 | gg = g = htab->got_info; |
f4416af6 AO |
3302 | if (g->bfd2got && ibfd) |
3303 | { | |
3304 | struct mips_got_entry e, *p; | |
143d77c5 | 3305 | |
f4416af6 AO |
3306 | BFD_ASSERT (h->dynindx >= 0); |
3307 | ||
3308 | g = mips_elf_got_for_ibfd (g, ibfd); | |
0f20cc35 | 3309 | if (g->next != gg || TLS_RELOC_P (r_type)) |
f4416af6 AO |
3310 | { |
3311 | e.abfd = ibfd; | |
3312 | e.symndx = -1; | |
3313 | e.d.h = (struct mips_elf_link_hash_entry *)h; | |
0f20cc35 | 3314 | e.tls_type = 0; |
f4416af6 | 3315 | |
9719ad41 | 3316 | p = htab_find (g->got_entries, &e); |
f4416af6 AO |
3317 | |
3318 | BFD_ASSERT (p->gotidx > 0); | |
0f20cc35 DJ |
3319 | |
3320 | if (TLS_RELOC_P (r_type)) | |
3321 | { | |
3322 | bfd_vma value = MINUS_ONE; | |
3323 | if ((h->root.type == bfd_link_hash_defined | |
3324 | || h->root.type == bfd_link_hash_defweak) | |
3325 | && h->root.u.def.section->output_section) | |
3326 | value = (h->root.u.def.value | |
3327 | + h->root.u.def.section->output_offset | |
3328 | + h->root.u.def.section->output_section->vma); | |
3329 | ||
3330 | return mips_tls_got_index (abfd, p->gotidx, &p->tls_type, r_type, | |
3331 | info, e.d.h, value); | |
3332 | } | |
3333 | else | |
3334 | return p->gotidx; | |
f4416af6 AO |
3335 | } |
3336 | } | |
3337 | ||
d222d210 RS |
3338 | if (htab->global_gotsym != NULL) |
3339 | global_got_dynindx = htab->global_gotsym->dynindx; | |
b49e97c9 | 3340 | |
0f20cc35 DJ |
3341 | if (TLS_RELOC_P (r_type)) |
3342 | { | |
3343 | struct mips_elf_link_hash_entry *hm | |
3344 | = (struct mips_elf_link_hash_entry *) h; | |
3345 | bfd_vma value = MINUS_ONE; | |
3346 | ||
3347 | if ((h->root.type == bfd_link_hash_defined | |
3348 | || h->root.type == bfd_link_hash_defweak) | |
3349 | && h->root.u.def.section->output_section) | |
3350 | value = (h->root.u.def.value | |
3351 | + h->root.u.def.section->output_offset | |
3352 | + h->root.u.def.section->output_section->vma); | |
3353 | ||
91d6fa6a NC |
3354 | got_index = mips_tls_got_index (abfd, hm->tls_got_offset, &hm->tls_type, |
3355 | r_type, info, hm, value); | |
0f20cc35 DJ |
3356 | } |
3357 | else | |
3358 | { | |
3359 | /* Once we determine the global GOT entry with the lowest dynamic | |
3360 | symbol table index, we must put all dynamic symbols with greater | |
3361 | indices into the GOT. That makes it easy to calculate the GOT | |
3362 | offset. */ | |
3363 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
91d6fa6a NC |
3364 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) |
3365 | * MIPS_ELF_GOT_SIZE (abfd)); | |
0f20cc35 | 3366 | } |
91d6fa6a | 3367 | BFD_ASSERT (got_index < htab->sgot->size); |
b49e97c9 | 3368 | |
91d6fa6a | 3369 | return got_index; |
b49e97c9 TS |
3370 | } |
3371 | ||
5c18022e RS |
3372 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3373 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3374 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3375 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3376 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3377 | |
3378 | static bfd_vma | |
9719ad41 | 3379 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3380 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3381 | { |
91d6fa6a | 3382 | bfd_vma page, got_index; |
b15e6682 | 3383 | struct mips_got_entry *entry; |
b49e97c9 | 3384 | |
0a44bf69 | 3385 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3386 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3387 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3388 | |
b15e6682 AO |
3389 | if (!entry) |
3390 | return MINUS_ONE; | |
143d77c5 | 3391 | |
91d6fa6a | 3392 | got_index = entry->gotidx; |
b49e97c9 TS |
3393 | |
3394 | if (offsetp) | |
f4416af6 | 3395 | *offsetp = value - entry->d.address; |
b49e97c9 | 3396 | |
91d6fa6a | 3397 | return got_index; |
b49e97c9 TS |
3398 | } |
3399 | ||
738e5348 | 3400 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3401 | EXTERNAL is true if the relocation was originally against a global |
3402 | symbol that binds locally. */ | |
b49e97c9 TS |
3403 | |
3404 | static bfd_vma | |
9719ad41 | 3405 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3406 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3407 | { |
b15e6682 | 3408 | struct mips_got_entry *entry; |
b49e97c9 | 3409 | |
0a44bf69 RS |
3410 | /* GOT16 relocations against local symbols are followed by a LO16 |
3411 | relocation; those against global symbols are not. Thus if the | |
3412 | symbol was originally local, the GOT16 relocation should load the | |
3413 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3414 | if (! external) |
0a44bf69 | 3415 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3416 | |
738e5348 RS |
3417 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3418 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3419 | same in all cases. */ | |
a8028dd0 RS |
3420 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3421 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3422 | if (entry) |
3423 | return entry->gotidx; | |
3424 | else | |
3425 | return MINUS_ONE; | |
b49e97c9 TS |
3426 | } |
3427 | ||
3428 | /* Returns the offset for the entry at the INDEXth position | |
3429 | in the GOT. */ | |
3430 | ||
3431 | static bfd_vma | |
a8028dd0 | 3432 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3433 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3434 | { |
a8028dd0 | 3435 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3436 | asection *sgot; |
3437 | bfd_vma gp; | |
3438 | ||
a8028dd0 | 3439 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3440 | BFD_ASSERT (htab != NULL); |
3441 | ||
a8028dd0 | 3442 | sgot = htab->sgot; |
f4416af6 | 3443 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3444 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3445 | |
91d6fa6a | 3446 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3447 | } |
3448 | ||
0a44bf69 RS |
3449 | /* Create and return a local GOT entry for VALUE, which was calculated |
3450 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3451 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3452 | instead. */ | |
b49e97c9 | 3453 | |
b15e6682 | 3454 | static struct mips_got_entry * |
0a44bf69 | 3455 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3456 | bfd *ibfd, bfd_vma value, |
5c18022e | 3457 | unsigned long r_symndx, |
0f20cc35 DJ |
3458 | struct mips_elf_link_hash_entry *h, |
3459 | int r_type) | |
b49e97c9 | 3460 | { |
b15e6682 | 3461 | struct mips_got_entry entry, **loc; |
f4416af6 | 3462 | struct mips_got_info *g; |
0a44bf69 RS |
3463 | struct mips_elf_link_hash_table *htab; |
3464 | ||
3465 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3466 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3467 | |
f4416af6 AO |
3468 | entry.abfd = NULL; |
3469 | entry.symndx = -1; | |
3470 | entry.d.address = value; | |
0f20cc35 | 3471 | entry.tls_type = 0; |
f4416af6 | 3472 | |
a8028dd0 | 3473 | g = mips_elf_got_for_ibfd (htab->got_info, ibfd); |
f4416af6 AO |
3474 | if (g == NULL) |
3475 | { | |
a8028dd0 | 3476 | g = mips_elf_got_for_ibfd (htab->got_info, abfd); |
f4416af6 AO |
3477 | BFD_ASSERT (g != NULL); |
3478 | } | |
b15e6682 | 3479 | |
020d7251 RS |
3480 | /* This function shouldn't be called for symbols that live in the global |
3481 | area of the GOT. */ | |
3482 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 DJ |
3483 | if (TLS_RELOC_P (r_type)) |
3484 | { | |
3485 | struct mips_got_entry *p; | |
3486 | ||
3487 | entry.abfd = ibfd; | |
df58fc94 | 3488 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 DJ |
3489 | { |
3490 | entry.tls_type = GOT_TLS_LDM; | |
3491 | entry.symndx = 0; | |
3492 | entry.d.addend = 0; | |
3493 | } | |
3494 | else if (h == NULL) | |
3495 | { | |
3496 | entry.symndx = r_symndx; | |
3497 | entry.d.addend = 0; | |
3498 | } | |
3499 | else | |
3500 | entry.d.h = h; | |
3501 | ||
3502 | p = (struct mips_got_entry *) | |
3503 | htab_find (g->got_entries, &entry); | |
3504 | ||
3505 | BFD_ASSERT (p); | |
3506 | return p; | |
3507 | } | |
3508 | ||
b15e6682 AO |
3509 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, |
3510 | INSERT); | |
3511 | if (*loc) | |
3512 | return *loc; | |
143d77c5 | 3513 | |
b15e6682 | 3514 | entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; |
0f20cc35 | 3515 | entry.tls_type = 0; |
b15e6682 AO |
3516 | |
3517 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3518 | ||
3519 | if (! *loc) | |
3520 | return NULL; | |
143d77c5 | 3521 | |
b15e6682 AO |
3522 | memcpy (*loc, &entry, sizeof entry); |
3523 | ||
8275b357 | 3524 | if (g->assigned_gotno > g->local_gotno) |
b49e97c9 | 3525 | { |
f4416af6 | 3526 | (*loc)->gotidx = -1; |
b49e97c9 TS |
3527 | /* We didn't allocate enough space in the GOT. */ |
3528 | (*_bfd_error_handler) | |
3529 | (_("not enough GOT space for local GOT entries")); | |
3530 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3531 | return NULL; |
b49e97c9 TS |
3532 | } |
3533 | ||
3534 | MIPS_ELF_PUT_WORD (abfd, value, | |
a8028dd0 | 3535 | (htab->sgot->contents + entry.gotidx)); |
b15e6682 | 3536 | |
5c18022e | 3537 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3538 | if (htab->is_vxworks) |
3539 | { | |
3540 | Elf_Internal_Rela outrel; | |
5c18022e | 3541 | asection *s; |
91d6fa6a | 3542 | bfd_byte *rloc; |
0a44bf69 | 3543 | bfd_vma got_address; |
0a44bf69 RS |
3544 | |
3545 | s = mips_elf_rel_dyn_section (info, FALSE); | |
a8028dd0 RS |
3546 | got_address = (htab->sgot->output_section->vma |
3547 | + htab->sgot->output_offset | |
0a44bf69 RS |
3548 | + entry.gotidx); |
3549 | ||
91d6fa6a | 3550 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3551 | outrel.r_offset = got_address; |
5c18022e RS |
3552 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3553 | outrel.r_addend = value; | |
91d6fa6a | 3554 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3555 | } |
3556 | ||
b15e6682 | 3557 | return *loc; |
b49e97c9 TS |
3558 | } |
3559 | ||
d4596a51 RS |
3560 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3561 | The number might be exact or a worst-case estimate, depending on how | |
3562 | much information is available to elf_backend_omit_section_dynsym at | |
3563 | the current linking stage. */ | |
3564 | ||
3565 | static bfd_size_type | |
3566 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3567 | { | |
3568 | bfd_size_type count; | |
3569 | ||
3570 | count = 0; | |
3571 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
3572 | { | |
3573 | asection *p; | |
3574 | const struct elf_backend_data *bed; | |
3575 | ||
3576 | bed = get_elf_backend_data (output_bfd); | |
3577 | for (p = output_bfd->sections; p ; p = p->next) | |
3578 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3579 | && (p->flags & SEC_ALLOC) != 0 | |
3580 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
3581 | ++count; | |
3582 | } | |
3583 | return count; | |
3584 | } | |
3585 | ||
b49e97c9 | 3586 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3587 | appear towards the end. */ |
b49e97c9 | 3588 | |
b34976b6 | 3589 | static bfd_boolean |
d4596a51 | 3590 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3591 | { |
a8028dd0 | 3592 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3593 | struct mips_elf_hash_sort_data hsd; |
3594 | struct mips_got_info *g; | |
b49e97c9 | 3595 | |
d4596a51 RS |
3596 | if (elf_hash_table (info)->dynsymcount == 0) |
3597 | return TRUE; | |
3598 | ||
a8028dd0 | 3599 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3600 | BFD_ASSERT (htab != NULL); |
3601 | ||
a8028dd0 | 3602 | g = htab->got_info; |
d4596a51 RS |
3603 | if (g == NULL) |
3604 | return TRUE; | |
f4416af6 | 3605 | |
b49e97c9 | 3606 | hsd.low = NULL; |
23cc69b6 RS |
3607 | hsd.max_unref_got_dynindx |
3608 | = hsd.min_got_dynindx | |
3609 | = (elf_hash_table (info)->dynsymcount - g->reloc_only_gotno); | |
d4596a51 | 3610 | hsd.max_non_got_dynindx = count_section_dynsyms (abfd, info) + 1; |
b49e97c9 TS |
3611 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
3612 | elf_hash_table (info)), | |
3613 | mips_elf_sort_hash_table_f, | |
3614 | &hsd); | |
3615 | ||
3616 | /* There should have been enough room in the symbol table to | |
44c410de | 3617 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 3618 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
d4596a51 RS |
3619 | BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx |
3620 | == elf_hash_table (info)->dynsymcount); | |
3621 | BFD_ASSERT (elf_hash_table (info)->dynsymcount - hsd.min_got_dynindx | |
3622 | == g->global_gotno); | |
b49e97c9 TS |
3623 | |
3624 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3625 | table index in the GOT. */ | |
d222d210 | 3626 | htab->global_gotsym = hsd.low; |
b49e97c9 | 3627 | |
b34976b6 | 3628 | return TRUE; |
b49e97c9 TS |
3629 | } |
3630 | ||
3631 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3632 | index. Otherwise, assign it the lowest available dynamic | |
3633 | index. */ | |
3634 | ||
b34976b6 | 3635 | static bfd_boolean |
9719ad41 | 3636 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3637 | { |
9719ad41 | 3638 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3639 | |
b49e97c9 TS |
3640 | /* Symbols without dynamic symbol table entries aren't interesting |
3641 | at all. */ | |
3642 | if (h->root.dynindx == -1) | |
b34976b6 | 3643 | return TRUE; |
b49e97c9 | 3644 | |
634835ae | 3645 | switch (h->global_got_area) |
f4416af6 | 3646 | { |
634835ae RS |
3647 | case GGA_NONE: |
3648 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
3649 | break; | |
0f20cc35 | 3650 | |
634835ae | 3651 | case GGA_NORMAL: |
b49e97c9 TS |
3652 | h->root.dynindx = --hsd->min_got_dynindx; |
3653 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3654 | break; |
3655 | ||
3656 | case GGA_RELOC_ONLY: | |
634835ae RS |
3657 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
3658 | hsd->low = (struct elf_link_hash_entry *) h; | |
3659 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
3660 | break; | |
b49e97c9 TS |
3661 | } |
3662 | ||
b34976b6 | 3663 | return TRUE; |
b49e97c9 TS |
3664 | } |
3665 | ||
3666 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
3667 | symbol table index lower than any we've seen to date, record it for | |
6ccf4795 RS |
3668 | posterity. FOR_CALL is true if the caller is only interested in |
3669 | using the GOT entry for calls. */ | |
b49e97c9 | 3670 | |
b34976b6 | 3671 | static bfd_boolean |
9719ad41 RS |
3672 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3673 | bfd *abfd, struct bfd_link_info *info, | |
6ccf4795 | 3674 | bfd_boolean for_call, |
0f20cc35 | 3675 | unsigned char tls_flag) |
b49e97c9 | 3676 | { |
a8028dd0 | 3677 | struct mips_elf_link_hash_table *htab; |
634835ae | 3678 | struct mips_elf_link_hash_entry *hmips; |
f4416af6 | 3679 | struct mips_got_entry entry, **loc; |
a8028dd0 RS |
3680 | struct mips_got_info *g; |
3681 | ||
3682 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3683 | BFD_ASSERT (htab != NULL); |
3684 | ||
634835ae | 3685 | hmips = (struct mips_elf_link_hash_entry *) h; |
6ccf4795 RS |
3686 | if (!for_call) |
3687 | hmips->got_only_for_calls = FALSE; | |
f4416af6 | 3688 | |
b49e97c9 TS |
3689 | /* A global symbol in the GOT must also be in the dynamic symbol |
3690 | table. */ | |
7c5fcef7 L |
3691 | if (h->dynindx == -1) |
3692 | { | |
3693 | switch (ELF_ST_VISIBILITY (h->other)) | |
3694 | { | |
3695 | case STV_INTERNAL: | |
3696 | case STV_HIDDEN: | |
33bb52fb | 3697 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3698 | break; |
3699 | } | |
c152c796 | 3700 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3701 | return FALSE; |
7c5fcef7 | 3702 | } |
b49e97c9 | 3703 | |
86324f90 | 3704 | /* Make sure we have a GOT to put this entry into. */ |
a8028dd0 | 3705 | g = htab->got_info; |
86324f90 EC |
3706 | BFD_ASSERT (g != NULL); |
3707 | ||
f4416af6 AO |
3708 | entry.abfd = abfd; |
3709 | entry.symndx = -1; | |
3710 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
0f20cc35 | 3711 | entry.tls_type = 0; |
f4416af6 AO |
3712 | |
3713 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, | |
3714 | INSERT); | |
3715 | ||
b49e97c9 TS |
3716 | /* If we've already marked this entry as needing GOT space, we don't |
3717 | need to do it again. */ | |
f4416af6 | 3718 | if (*loc) |
0f20cc35 DJ |
3719 | { |
3720 | (*loc)->tls_type |= tls_flag; | |
3721 | return TRUE; | |
3722 | } | |
f4416af6 AO |
3723 | |
3724 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3725 | ||
3726 | if (! *loc) | |
3727 | return FALSE; | |
143d77c5 | 3728 | |
f4416af6 | 3729 | entry.gotidx = -1; |
0f20cc35 DJ |
3730 | entry.tls_type = tls_flag; |
3731 | ||
f4416af6 AO |
3732 | memcpy (*loc, &entry, sizeof entry); |
3733 | ||
0f20cc35 | 3734 | if (tls_flag == 0) |
634835ae | 3735 | hmips->global_got_area = GGA_NORMAL; |
b49e97c9 | 3736 | |
b34976b6 | 3737 | return TRUE; |
b49e97c9 | 3738 | } |
f4416af6 AO |
3739 | |
3740 | /* Reserve space in G for a GOT entry containing the value of symbol | |
3741 | SYMNDX in input bfd ABDF, plus ADDEND. */ | |
3742 | ||
3743 | static bfd_boolean | |
9719ad41 | 3744 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
a8028dd0 | 3745 | struct bfd_link_info *info, |
0f20cc35 | 3746 | unsigned char tls_flag) |
f4416af6 | 3747 | { |
a8028dd0 RS |
3748 | struct mips_elf_link_hash_table *htab; |
3749 | struct mips_got_info *g; | |
f4416af6 AO |
3750 | struct mips_got_entry entry, **loc; |
3751 | ||
a8028dd0 | 3752 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3753 | BFD_ASSERT (htab != NULL); |
3754 | ||
a8028dd0 RS |
3755 | g = htab->got_info; |
3756 | BFD_ASSERT (g != NULL); | |
3757 | ||
f4416af6 AO |
3758 | entry.abfd = abfd; |
3759 | entry.symndx = symndx; | |
3760 | entry.d.addend = addend; | |
0f20cc35 | 3761 | entry.tls_type = tls_flag; |
f4416af6 AO |
3762 | loc = (struct mips_got_entry **) |
3763 | htab_find_slot (g->got_entries, &entry, INSERT); | |
3764 | ||
3765 | if (*loc) | |
0f20cc35 DJ |
3766 | { |
3767 | if (tls_flag == GOT_TLS_GD && !((*loc)->tls_type & GOT_TLS_GD)) | |
3768 | { | |
3769 | g->tls_gotno += 2; | |
3770 | (*loc)->tls_type |= tls_flag; | |
3771 | } | |
3772 | else if (tls_flag == GOT_TLS_IE && !((*loc)->tls_type & GOT_TLS_IE)) | |
3773 | { | |
3774 | g->tls_gotno += 1; | |
3775 | (*loc)->tls_type |= tls_flag; | |
3776 | } | |
3777 | return TRUE; | |
3778 | } | |
f4416af6 | 3779 | |
946c668d | 3780 | entry.gotidx = -1; |
0f20cc35 DJ |
3781 | if (tls_flag != 0) |
3782 | { | |
0f20cc35 DJ |
3783 | entry.tls_type = tls_flag; |
3784 | if (tls_flag == GOT_TLS_IE) | |
3785 | g->tls_gotno += 1; | |
3786 | else if (tls_flag == GOT_TLS_GD) | |
3787 | g->tls_gotno += 2; | |
3788 | else if (g->tls_ldm_offset == MINUS_ONE) | |
3789 | { | |
3790 | g->tls_ldm_offset = MINUS_TWO; | |
3791 | g->tls_gotno += 2; | |
3792 | } | |
3793 | } | |
3794 | else | |
3795 | { | |
946c668d | 3796 | g->local_gotno += 1; |
0f20cc35 DJ |
3797 | entry.tls_type = 0; |
3798 | } | |
f4416af6 AO |
3799 | |
3800 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3801 | ||
3802 | if (! *loc) | |
3803 | return FALSE; | |
143d77c5 | 3804 | |
f4416af6 AO |
3805 | memcpy (*loc, &entry, sizeof entry); |
3806 | ||
3807 | return TRUE; | |
3808 | } | |
c224138d RS |
3809 | |
3810 | /* Return the maximum number of GOT page entries required for RANGE. */ | |
3811 | ||
3812 | static bfd_vma | |
3813 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
3814 | { | |
3815 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
3816 | } | |
3817 | ||
3a3b6725 | 3818 | /* Record that ABFD has a page relocation against symbol SYMNDX and |
a8028dd0 RS |
3819 | that ADDEND is the addend for that relocation. |
3820 | ||
3821 | This function creates an upper bound on the number of GOT slots | |
3822 | required; no attempt is made to combine references to non-overridable | |
3823 | global symbols across multiple input files. */ | |
c224138d RS |
3824 | |
3825 | static bfd_boolean | |
a8028dd0 RS |
3826 | mips_elf_record_got_page_entry (struct bfd_link_info *info, bfd *abfd, |
3827 | long symndx, bfd_signed_vma addend) | |
c224138d | 3828 | { |
a8028dd0 RS |
3829 | struct mips_elf_link_hash_table *htab; |
3830 | struct mips_got_info *g; | |
c224138d RS |
3831 | struct mips_got_page_entry lookup, *entry; |
3832 | struct mips_got_page_range **range_ptr, *range; | |
3833 | bfd_vma old_pages, new_pages; | |
3834 | void **loc; | |
3835 | ||
a8028dd0 | 3836 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3837 | BFD_ASSERT (htab != NULL); |
3838 | ||
a8028dd0 RS |
3839 | g = htab->got_info; |
3840 | BFD_ASSERT (g != NULL); | |
3841 | ||
c224138d RS |
3842 | /* Find the mips_got_page_entry hash table entry for this symbol. */ |
3843 | lookup.abfd = abfd; | |
3844 | lookup.symndx = symndx; | |
3845 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
3846 | if (loc == NULL) | |
3847 | return FALSE; | |
3848 | ||
3849 | /* Create a mips_got_page_entry if this is the first time we've | |
3850 | seen the symbol. */ | |
3851 | entry = (struct mips_got_page_entry *) *loc; | |
3852 | if (!entry) | |
3853 | { | |
3854 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
3855 | if (!entry) | |
3856 | return FALSE; | |
3857 | ||
3858 | entry->abfd = abfd; | |
3859 | entry->symndx = symndx; | |
3860 | entry->ranges = NULL; | |
3861 | entry->num_pages = 0; | |
3862 | *loc = entry; | |
3863 | } | |
3864 | ||
3865 | /* Skip over ranges whose maximum extent cannot share a page entry | |
3866 | with ADDEND. */ | |
3867 | range_ptr = &entry->ranges; | |
3868 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
3869 | range_ptr = &(*range_ptr)->next; | |
3870 | ||
3871 | /* If we scanned to the end of the list, or found a range whose | |
3872 | minimum extent cannot share a page entry with ADDEND, create | |
3873 | a new singleton range. */ | |
3874 | range = *range_ptr; | |
3875 | if (!range || addend < range->min_addend - 0xffff) | |
3876 | { | |
3877 | range = bfd_alloc (abfd, sizeof (*range)); | |
3878 | if (!range) | |
3879 | return FALSE; | |
3880 | ||
3881 | range->next = *range_ptr; | |
3882 | range->min_addend = addend; | |
3883 | range->max_addend = addend; | |
3884 | ||
3885 | *range_ptr = range; | |
3886 | entry->num_pages++; | |
3887 | g->page_gotno++; | |
3888 | return TRUE; | |
3889 | } | |
3890 | ||
3891 | /* Remember how many pages the old range contributed. */ | |
3892 | old_pages = mips_elf_pages_for_range (range); | |
3893 | ||
3894 | /* Update the ranges. */ | |
3895 | if (addend < range->min_addend) | |
3896 | range->min_addend = addend; | |
3897 | else if (addend > range->max_addend) | |
3898 | { | |
3899 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
3900 | { | |
3901 | old_pages += mips_elf_pages_for_range (range->next); | |
3902 | range->max_addend = range->next->max_addend; | |
3903 | range->next = range->next->next; | |
3904 | } | |
3905 | else | |
3906 | range->max_addend = addend; | |
3907 | } | |
3908 | ||
3909 | /* Record any change in the total estimate. */ | |
3910 | new_pages = mips_elf_pages_for_range (range); | |
3911 | if (old_pages != new_pages) | |
3912 | { | |
3913 | entry->num_pages += new_pages - old_pages; | |
3914 | g->page_gotno += new_pages - old_pages; | |
3915 | } | |
3916 | ||
3917 | return TRUE; | |
3918 | } | |
33bb52fb RS |
3919 | |
3920 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
3921 | ||
3922 | static void | |
3923 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
3924 | unsigned int n) | |
3925 | { | |
3926 | asection *s; | |
3927 | struct mips_elf_link_hash_table *htab; | |
3928 | ||
3929 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3930 | BFD_ASSERT (htab != NULL); |
3931 | ||
33bb52fb RS |
3932 | s = mips_elf_rel_dyn_section (info, FALSE); |
3933 | BFD_ASSERT (s != NULL); | |
3934 | ||
3935 | if (htab->is_vxworks) | |
3936 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
3937 | else | |
3938 | { | |
3939 | if (s->size == 0) | |
3940 | { | |
3941 | /* Make room for a null element. */ | |
3942 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
3943 | ++s->reloc_count; | |
3944 | } | |
3945 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
3946 | } | |
3947 | } | |
3948 | \f | |
3949 | /* A htab_traverse callback for GOT entries. Set boolean *DATA to true | |
3950 | if the GOT entry is for an indirect or warning symbol. */ | |
3951 | ||
3952 | static int | |
3953 | mips_elf_check_recreate_got (void **entryp, void *data) | |
3954 | { | |
3955 | struct mips_got_entry *entry; | |
3956 | bfd_boolean *must_recreate; | |
3957 | ||
3958 | entry = (struct mips_got_entry *) *entryp; | |
3959 | must_recreate = (bfd_boolean *) data; | |
3960 | if (entry->abfd != NULL && entry->symndx == -1) | |
3961 | { | |
3962 | struct mips_elf_link_hash_entry *h; | |
3963 | ||
3964 | h = entry->d.h; | |
3965 | if (h->root.root.type == bfd_link_hash_indirect | |
3966 | || h->root.root.type == bfd_link_hash_warning) | |
3967 | { | |
3968 | *must_recreate = TRUE; | |
3969 | return 0; | |
3970 | } | |
3971 | } | |
3972 | return 1; | |
3973 | } | |
3974 | ||
3975 | /* A htab_traverse callback for GOT entries. Add all entries to | |
3976 | hash table *DATA, converting entries for indirect and warning | |
3977 | symbols into entries for the target symbol. Set *DATA to null | |
3978 | on error. */ | |
3979 | ||
3980 | static int | |
3981 | mips_elf_recreate_got (void **entryp, void *data) | |
3982 | { | |
3983 | htab_t *new_got; | |
3984 | struct mips_got_entry *entry; | |
3985 | void **slot; | |
3986 | ||
3987 | new_got = (htab_t *) data; | |
3988 | entry = (struct mips_got_entry *) *entryp; | |
3989 | if (entry->abfd != NULL && entry->symndx == -1) | |
3990 | { | |
3991 | struct mips_elf_link_hash_entry *h; | |
3992 | ||
3993 | h = entry->d.h; | |
3994 | while (h->root.root.type == bfd_link_hash_indirect | |
3995 | || h->root.root.type == bfd_link_hash_warning) | |
634835ae RS |
3996 | { |
3997 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
3998 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3999 | } | |
33bb52fb RS |
4000 | entry->d.h = h; |
4001 | } | |
4002 | slot = htab_find_slot (*new_got, entry, INSERT); | |
4003 | if (slot == NULL) | |
4004 | { | |
4005 | *new_got = NULL; | |
4006 | return 0; | |
4007 | } | |
4008 | if (*slot == NULL) | |
4009 | *slot = entry; | |
33bb52fb RS |
4010 | return 1; |
4011 | } | |
4012 | ||
4013 | /* If any entries in G->got_entries are for indirect or warning symbols, | |
4014 | replace them with entries for the target symbol. */ | |
4015 | ||
4016 | static bfd_boolean | |
4017 | mips_elf_resolve_final_got_entries (struct mips_got_info *g) | |
4018 | { | |
4019 | bfd_boolean must_recreate; | |
4020 | htab_t new_got; | |
4021 | ||
4022 | must_recreate = FALSE; | |
4023 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &must_recreate); | |
4024 | if (must_recreate) | |
4025 | { | |
4026 | new_got = htab_create (htab_size (g->got_entries), | |
4027 | mips_elf_got_entry_hash, | |
4028 | mips_elf_got_entry_eq, NULL); | |
4029 | htab_traverse (g->got_entries, mips_elf_recreate_got, &new_got); | |
4030 | if (new_got == NULL) | |
4031 | return FALSE; | |
4032 | ||
33bb52fb RS |
4033 | htab_delete (g->got_entries); |
4034 | g->got_entries = new_got; | |
4035 | } | |
4036 | return TRUE; | |
4037 | } | |
4038 | ||
634835ae | 4039 | /* A mips_elf_link_hash_traverse callback for which DATA points |
020d7251 RS |
4040 | to the link_info structure. Count the number of type (3) entries |
4041 | in the master GOT. */ | |
33bb52fb RS |
4042 | |
4043 | static int | |
d4596a51 | 4044 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4045 | { |
020d7251 | 4046 | struct bfd_link_info *info; |
6ccf4795 | 4047 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4048 | struct mips_got_info *g; |
4049 | ||
020d7251 | 4050 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4051 | htab = mips_elf_hash_table (info); |
4052 | g = htab->got_info; | |
d4596a51 | 4053 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4054 | { |
020d7251 RS |
4055 | /* Make a final decision about whether the symbol belongs in the |
4056 | local or global GOT. Symbols that bind locally can (and in the | |
4057 | case of forced-local symbols, must) live in the local GOT. | |
4058 | Those that are aren't in the dynamic symbol table must also | |
4059 | live in the local GOT. | |
4060 | ||
4061 | Note that the former condition does not always imply the | |
4062 | latter: symbols do not bind locally if they are completely | |
4063 | undefined. We'll report undefined symbols later if appropriate. */ | |
6ccf4795 RS |
4064 | if (h->root.dynindx == -1 |
4065 | || (h->got_only_for_calls | |
4066 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4067 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
d4596a51 | 4068 | { |
020d7251 RS |
4069 | /* The symbol belongs in the local GOT. We no longer need this |
4070 | entry if it was only used for relocations; those relocations | |
4071 | will be against the null or section symbol instead of H. */ | |
d4596a51 RS |
4072 | if (h->global_got_area != GGA_RELOC_ONLY) |
4073 | g->local_gotno++; | |
4074 | h->global_got_area = GGA_NONE; | |
4075 | } | |
6ccf4795 RS |
4076 | else if (htab->is_vxworks |
4077 | && h->got_only_for_calls | |
4078 | && h->root.plt.offset != MINUS_ONE) | |
4079 | /* On VxWorks, calls can refer directly to the .got.plt entry; | |
4080 | they don't need entries in the regular GOT. .got.plt entries | |
4081 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4082 | h->global_got_area = GGA_NONE; | |
d4596a51 | 4083 | else |
23cc69b6 RS |
4084 | { |
4085 | g->global_gotno++; | |
4086 | if (h->global_got_area == GGA_RELOC_ONLY) | |
4087 | g->reloc_only_gotno++; | |
4088 | } | |
33bb52fb RS |
4089 | } |
4090 | return 1; | |
4091 | } | |
f4416af6 AO |
4092 | \f |
4093 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
4094 | ||
4095 | static hashval_t | |
9719ad41 | 4096 | mips_elf_bfd2got_entry_hash (const void *entry_) |
f4416af6 AO |
4097 | { |
4098 | const struct mips_elf_bfd2got_hash *entry | |
4099 | = (struct mips_elf_bfd2got_hash *)entry_; | |
4100 | ||
4101 | return entry->bfd->id; | |
4102 | } | |
4103 | ||
4104 | /* Check whether two hash entries have the same bfd. */ | |
4105 | ||
4106 | static int | |
9719ad41 | 4107 | mips_elf_bfd2got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
4108 | { |
4109 | const struct mips_elf_bfd2got_hash *e1 | |
4110 | = (const struct mips_elf_bfd2got_hash *)entry1; | |
4111 | const struct mips_elf_bfd2got_hash *e2 | |
4112 | = (const struct mips_elf_bfd2got_hash *)entry2; | |
4113 | ||
4114 | return e1->bfd == e2->bfd; | |
4115 | } | |
4116 | ||
bad36eac | 4117 | /* In a multi-got link, determine the GOT to be used for IBFD. G must |
f4416af6 AO |
4118 | be the master GOT data. */ |
4119 | ||
4120 | static struct mips_got_info * | |
9719ad41 | 4121 | mips_elf_got_for_ibfd (struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4122 | { |
4123 | struct mips_elf_bfd2got_hash e, *p; | |
4124 | ||
4125 | if (! g->bfd2got) | |
4126 | return g; | |
4127 | ||
4128 | e.bfd = ibfd; | |
9719ad41 | 4129 | p = htab_find (g->bfd2got, &e); |
f4416af6 AO |
4130 | return p ? p->g : NULL; |
4131 | } | |
4132 | ||
c224138d RS |
4133 | /* Use BFD2GOT to find ABFD's got entry, creating one if none exists. |
4134 | Return NULL if an error occured. */ | |
f4416af6 | 4135 | |
c224138d RS |
4136 | static struct mips_got_info * |
4137 | mips_elf_get_got_for_bfd (struct htab *bfd2got, bfd *output_bfd, | |
4138 | bfd *input_bfd) | |
f4416af6 | 4139 | { |
f4416af6 | 4140 | struct mips_elf_bfd2got_hash bfdgot_entry, *bfdgot; |
c224138d | 4141 | struct mips_got_info *g; |
f4416af6 | 4142 | void **bfdgotp; |
143d77c5 | 4143 | |
c224138d | 4144 | bfdgot_entry.bfd = input_bfd; |
f4416af6 | 4145 | bfdgotp = htab_find_slot (bfd2got, &bfdgot_entry, INSERT); |
c224138d | 4146 | bfdgot = (struct mips_elf_bfd2got_hash *) *bfdgotp; |
f4416af6 | 4147 | |
c224138d | 4148 | if (bfdgot == NULL) |
f4416af6 | 4149 | { |
c224138d RS |
4150 | bfdgot = ((struct mips_elf_bfd2got_hash *) |
4151 | bfd_alloc (output_bfd, sizeof (struct mips_elf_bfd2got_hash))); | |
f4416af6 | 4152 | if (bfdgot == NULL) |
c224138d | 4153 | return NULL; |
f4416af6 AO |
4154 | |
4155 | *bfdgotp = bfdgot; | |
4156 | ||
c224138d RS |
4157 | g = ((struct mips_got_info *) |
4158 | bfd_alloc (output_bfd, sizeof (struct mips_got_info))); | |
f4416af6 | 4159 | if (g == NULL) |
c224138d RS |
4160 | return NULL; |
4161 | ||
4162 | bfdgot->bfd = input_bfd; | |
4163 | bfdgot->g = g; | |
f4416af6 | 4164 | |
f4416af6 | 4165 | g->global_gotno = 0; |
23cc69b6 | 4166 | g->reloc_only_gotno = 0; |
f4416af6 | 4167 | g->local_gotno = 0; |
c224138d | 4168 | g->page_gotno = 0; |
f4416af6 | 4169 | g->assigned_gotno = -1; |
0f20cc35 DJ |
4170 | g->tls_gotno = 0; |
4171 | g->tls_assigned_gotno = 0; | |
4172 | g->tls_ldm_offset = MINUS_ONE; | |
f4416af6 | 4173 | g->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
9719ad41 | 4174 | mips_elf_multi_got_entry_eq, NULL); |
f4416af6 | 4175 | if (g->got_entries == NULL) |
c224138d RS |
4176 | return NULL; |
4177 | ||
4178 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4179 | mips_got_page_entry_eq, NULL); | |
4180 | if (g->got_page_entries == NULL) | |
4181 | return NULL; | |
f4416af6 AO |
4182 | |
4183 | g->bfd2got = NULL; | |
4184 | g->next = NULL; | |
4185 | } | |
4186 | ||
c224138d RS |
4187 | return bfdgot->g; |
4188 | } | |
4189 | ||
4190 | /* A htab_traverse callback for the entries in the master got. | |
4191 | Create one separate got for each bfd that has entries in the global | |
4192 | got, such that we can tell how many local and global entries each | |
4193 | bfd requires. */ | |
4194 | ||
4195 | static int | |
4196 | mips_elf_make_got_per_bfd (void **entryp, void *p) | |
4197 | { | |
4198 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4199 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
4200 | struct mips_got_info *g; | |
4201 | ||
4202 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
4203 | if (g == NULL) | |
4204 | { | |
4205 | arg->obfd = NULL; | |
4206 | return 0; | |
4207 | } | |
4208 | ||
f4416af6 AO |
4209 | /* Insert the GOT entry in the bfd's got entry hash table. */ |
4210 | entryp = htab_find_slot (g->got_entries, entry, INSERT); | |
4211 | if (*entryp != NULL) | |
4212 | return 1; | |
143d77c5 | 4213 | |
f4416af6 AO |
4214 | *entryp = entry; |
4215 | ||
0f20cc35 DJ |
4216 | if (entry->tls_type) |
4217 | { | |
4218 | if (entry->tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) | |
4219 | g->tls_gotno += 2; | |
4220 | if (entry->tls_type & GOT_TLS_IE) | |
4221 | g->tls_gotno += 1; | |
4222 | } | |
020d7251 | 4223 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) |
f4416af6 AO |
4224 | ++g->local_gotno; |
4225 | else | |
4226 | ++g->global_gotno; | |
4227 | ||
4228 | return 1; | |
4229 | } | |
4230 | ||
c224138d RS |
4231 | /* A htab_traverse callback for the page entries in the master got. |
4232 | Associate each page entry with the bfd's got. */ | |
4233 | ||
4234 | static int | |
4235 | mips_elf_make_got_pages_per_bfd (void **entryp, void *p) | |
4236 | { | |
4237 | struct mips_got_page_entry *entry = (struct mips_got_page_entry *) *entryp; | |
4238 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *) p; | |
4239 | struct mips_got_info *g; | |
4240 | ||
4241 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
4242 | if (g == NULL) | |
4243 | { | |
4244 | arg->obfd = NULL; | |
4245 | return 0; | |
4246 | } | |
4247 | ||
4248 | /* Insert the GOT entry in the bfd's got entry hash table. */ | |
4249 | entryp = htab_find_slot (g->got_page_entries, entry, INSERT); | |
4250 | if (*entryp != NULL) | |
4251 | return 1; | |
4252 | ||
4253 | *entryp = entry; | |
4254 | g->page_gotno += entry->num_pages; | |
4255 | return 1; | |
4256 | } | |
4257 | ||
4258 | /* Consider merging the got described by BFD2GOT with TO, using the | |
4259 | information given by ARG. Return -1 if this would lead to overflow, | |
4260 | 1 if they were merged successfully, and 0 if a merge failed due to | |
4261 | lack of memory. (These values are chosen so that nonnegative return | |
4262 | values can be returned by a htab_traverse callback.) */ | |
4263 | ||
4264 | static int | |
4265 | mips_elf_merge_got_with (struct mips_elf_bfd2got_hash *bfd2got, | |
4266 | struct mips_got_info *to, | |
4267 | struct mips_elf_got_per_bfd_arg *arg) | |
4268 | { | |
4269 | struct mips_got_info *from = bfd2got->g; | |
4270 | unsigned int estimate; | |
4271 | ||
4272 | /* Work out how many page entries we would need for the combined GOT. */ | |
4273 | estimate = arg->max_pages; | |
4274 | if (estimate >= from->page_gotno + to->page_gotno) | |
4275 | estimate = from->page_gotno + to->page_gotno; | |
4276 | ||
e2ece73c | 4277 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4278 | would be needed. */ |
e2ece73c RS |
4279 | estimate += from->local_gotno + to->local_gotno; |
4280 | estimate += from->tls_gotno + to->tls_gotno; | |
4281 | ||
17214937 RS |
4282 | /* If we're merging with the primary got, any TLS relocations will |
4283 | come after the full set of global entries. Otherwise estimate those | |
e2ece73c | 4284 | conservatively as well. */ |
17214937 | 4285 | if (to == arg->primary && from->tls_gotno + to->tls_gotno) |
e2ece73c RS |
4286 | estimate += arg->global_count; |
4287 | else | |
4288 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4289 | |
4290 | /* Bail out if the combined GOT might be too big. */ | |
4291 | if (estimate > arg->max_count) | |
4292 | return -1; | |
4293 | ||
4294 | /* Commit to the merge. Record that TO is now the bfd for this got. */ | |
4295 | bfd2got->g = to; | |
4296 | ||
4297 | /* Transfer the bfd's got information from FROM to TO. */ | |
4298 | htab_traverse (from->got_entries, mips_elf_make_got_per_bfd, arg); | |
4299 | if (arg->obfd == NULL) | |
4300 | return 0; | |
4301 | ||
4302 | htab_traverse (from->got_page_entries, mips_elf_make_got_pages_per_bfd, arg); | |
4303 | if (arg->obfd == NULL) | |
4304 | return 0; | |
4305 | ||
4306 | /* We don't have to worry about releasing memory of the actual | |
4307 | got entries, since they're all in the master got_entries hash | |
4308 | table anyway. */ | |
4309 | htab_delete (from->got_entries); | |
4310 | htab_delete (from->got_page_entries); | |
4311 | return 1; | |
4312 | } | |
4313 | ||
f4416af6 AO |
4314 | /* Attempt to merge gots of different input bfds. Try to use as much |
4315 | as possible of the primary got, since it doesn't require explicit | |
4316 | dynamic relocations, but don't use bfds that would reference global | |
4317 | symbols out of the addressable range. Failing the primary got, | |
4318 | attempt to merge with the current got, or finish the current got | |
4319 | and then make make the new got current. */ | |
4320 | ||
4321 | static int | |
9719ad41 | 4322 | mips_elf_merge_gots (void **bfd2got_, void *p) |
f4416af6 AO |
4323 | { |
4324 | struct mips_elf_bfd2got_hash *bfd2got | |
4325 | = (struct mips_elf_bfd2got_hash *)*bfd2got_; | |
4326 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
c224138d RS |
4327 | struct mips_got_info *g; |
4328 | unsigned int estimate; | |
4329 | int result; | |
4330 | ||
4331 | g = bfd2got->g; | |
4332 | ||
4333 | /* Work out the number of page, local and TLS entries. */ | |
4334 | estimate = arg->max_pages; | |
4335 | if (estimate > g->page_gotno) | |
4336 | estimate = g->page_gotno; | |
4337 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4338 | |
4339 | /* We place TLS GOT entries after both locals and globals. The globals | |
4340 | for the primary GOT may overflow the normal GOT size limit, so be | |
4341 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4342 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4343 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4344 | |
c224138d | 4345 | if (estimate <= arg->max_count) |
f4416af6 | 4346 | { |
c224138d RS |
4347 | /* If we don't have a primary GOT, use it as |
4348 | a starting point for the primary GOT. */ | |
4349 | if (!arg->primary) | |
4350 | { | |
4351 | arg->primary = bfd2got->g; | |
4352 | return 1; | |
4353 | } | |
f4416af6 | 4354 | |
c224138d RS |
4355 | /* Try merging with the primary GOT. */ |
4356 | result = mips_elf_merge_got_with (bfd2got, arg->primary, arg); | |
4357 | if (result >= 0) | |
4358 | return result; | |
f4416af6 | 4359 | } |
c224138d | 4360 | |
f4416af6 | 4361 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4362 | if (arg->current) |
f4416af6 | 4363 | { |
c224138d RS |
4364 | result = mips_elf_merge_got_with (bfd2got, arg->current, arg); |
4365 | if (result >= 0) | |
4366 | return result; | |
f4416af6 | 4367 | } |
c224138d | 4368 | |
f4416af6 AO |
4369 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4370 | fits; if it turns out that it doesn't, we'll get relocation | |
4371 | overflows anyway. */ | |
c224138d RS |
4372 | g->next = arg->current; |
4373 | arg->current = g; | |
0f20cc35 DJ |
4374 | |
4375 | return 1; | |
4376 | } | |
4377 | ||
ead49a57 RS |
4378 | /* Set the TLS GOT index for the GOT entry in ENTRYP. ENTRYP's NEXT field |
4379 | is null iff there is just a single GOT. */ | |
0f20cc35 DJ |
4380 | |
4381 | static int | |
4382 | mips_elf_initialize_tls_index (void **entryp, void *p) | |
4383 | { | |
4384 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4385 | struct mips_got_info *g = p; | |
ead49a57 | 4386 | bfd_vma next_index; |
cbf2cba4 | 4387 | unsigned char tls_type; |
0f20cc35 DJ |
4388 | |
4389 | /* We're only interested in TLS symbols. */ | |
4390 | if (entry->tls_type == 0) | |
4391 | return 1; | |
4392 | ||
ead49a57 RS |
4393 | next_index = MIPS_ELF_GOT_SIZE (entry->abfd) * (long) g->tls_assigned_gotno; |
4394 | ||
4395 | if (entry->symndx == -1 && g->next == NULL) | |
0f20cc35 | 4396 | { |
ead49a57 RS |
4397 | /* A type (3) got entry in the single-GOT case. We use the symbol's |
4398 | hash table entry to track its index. */ | |
4399 | if (entry->d.h->tls_type & GOT_TLS_OFFSET_DONE) | |
4400 | return 1; | |
4401 | entry->d.h->tls_type |= GOT_TLS_OFFSET_DONE; | |
4402 | entry->d.h->tls_got_offset = next_index; | |
cbf2cba4 | 4403 | tls_type = entry->d.h->tls_type; |
ead49a57 RS |
4404 | } |
4405 | else | |
4406 | { | |
4407 | if (entry->tls_type & GOT_TLS_LDM) | |
0f20cc35 | 4408 | { |
ead49a57 RS |
4409 | /* There are separate mips_got_entry objects for each input bfd |
4410 | that requires an LDM entry. Make sure that all LDM entries in | |
4411 | a GOT resolve to the same index. */ | |
4412 | if (g->tls_ldm_offset != MINUS_TWO && g->tls_ldm_offset != MINUS_ONE) | |
4005427f | 4413 | { |
ead49a57 | 4414 | entry->gotidx = g->tls_ldm_offset; |
4005427f RS |
4415 | return 1; |
4416 | } | |
ead49a57 | 4417 | g->tls_ldm_offset = next_index; |
0f20cc35 | 4418 | } |
ead49a57 | 4419 | entry->gotidx = next_index; |
cbf2cba4 | 4420 | tls_type = entry->tls_type; |
f4416af6 AO |
4421 | } |
4422 | ||
ead49a57 | 4423 | /* Account for the entries we've just allocated. */ |
cbf2cba4 | 4424 | if (tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) |
0f20cc35 | 4425 | g->tls_assigned_gotno += 2; |
cbf2cba4 | 4426 | if (tls_type & GOT_TLS_IE) |
0f20cc35 DJ |
4427 | g->tls_assigned_gotno += 1; |
4428 | ||
f4416af6 AO |
4429 | return 1; |
4430 | } | |
4431 | ||
4432 | /* If passed a NULL mips_got_info in the argument, set the marker used | |
4433 | to tell whether a global symbol needs a got entry (in the primary | |
4434 | got) to the given VALUE. | |
4435 | ||
4436 | If passed a pointer G to a mips_got_info in the argument (it must | |
4437 | not be the primary GOT), compute the offset from the beginning of | |
4438 | the (primary) GOT section to the entry in G corresponding to the | |
4439 | global symbol. G's assigned_gotno must contain the index of the | |
4440 | first available global GOT entry in G. VALUE must contain the size | |
4441 | of a GOT entry in bytes. For each global GOT entry that requires a | |
4442 | dynamic relocation, NEEDED_RELOCS is incremented, and the symbol is | |
4cc11e76 | 4443 | marked as not eligible for lazy resolution through a function |
f4416af6 AO |
4444 | stub. */ |
4445 | static int | |
9719ad41 | 4446 | mips_elf_set_global_got_offset (void **entryp, void *p) |
f4416af6 AO |
4447 | { |
4448 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4449 | struct mips_elf_set_global_got_offset_arg *arg | |
4450 | = (struct mips_elf_set_global_got_offset_arg *)p; | |
4451 | struct mips_got_info *g = arg->g; | |
4452 | ||
0f20cc35 DJ |
4453 | if (g && entry->tls_type != GOT_NORMAL) |
4454 | arg->needed_relocs += | |
4455 | mips_tls_got_relocs (arg->info, entry->tls_type, | |
4456 | entry->symndx == -1 ? &entry->d.h->root : NULL); | |
4457 | ||
634835ae RS |
4458 | if (entry->abfd != NULL |
4459 | && entry->symndx == -1 | |
4460 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 AO |
4461 | { |
4462 | if (g) | |
4463 | { | |
f4416af6 | 4464 | entry->gotidx = arg->value * (long) g->assigned_gotno++; |
f4416af6 AO |
4465 | if (arg->info->shared |
4466 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
f5385ebf AM |
4467 | && entry->d.h->root.def_dynamic |
4468 | && !entry->d.h->root.def_regular)) | |
f4416af6 AO |
4469 | ++arg->needed_relocs; |
4470 | } | |
4471 | else | |
634835ae | 4472 | entry->d.h->global_got_area = arg->value; |
f4416af6 AO |
4473 | } |
4474 | ||
4475 | return 1; | |
4476 | } | |
4477 | ||
33bb52fb RS |
4478 | /* A htab_traverse callback for GOT entries for which DATA is the |
4479 | bfd_link_info. Forbid any global symbols from having traditional | |
4480 | lazy-binding stubs. */ | |
4481 | ||
0626d451 | 4482 | static int |
33bb52fb | 4483 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4484 | { |
33bb52fb RS |
4485 | struct bfd_link_info *info; |
4486 | struct mips_elf_link_hash_table *htab; | |
4487 | struct mips_got_entry *entry; | |
0626d451 | 4488 | |
33bb52fb RS |
4489 | entry = (struct mips_got_entry *) *entryp; |
4490 | info = (struct bfd_link_info *) data; | |
4491 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4492 | BFD_ASSERT (htab != NULL); |
4493 | ||
0626d451 RS |
4494 | if (entry->abfd != NULL |
4495 | && entry->symndx == -1 | |
33bb52fb | 4496 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4497 | { |
33bb52fb RS |
4498 | entry->d.h->needs_lazy_stub = FALSE; |
4499 | htab->lazy_stub_count--; | |
f4416af6 | 4500 | } |
143d77c5 | 4501 | |
f4416af6 AO |
4502 | return 1; |
4503 | } | |
4504 | ||
f4416af6 AO |
4505 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4506 | the primary GOT. */ | |
4507 | static bfd_vma | |
9719ad41 | 4508 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4509 | { |
4510 | if (g->bfd2got == NULL) | |
4511 | return 0; | |
4512 | ||
4513 | g = mips_elf_got_for_ibfd (g, ibfd); | |
4514 | if (! g) | |
4515 | return 0; | |
4516 | ||
4517 | BFD_ASSERT (g->next); | |
4518 | ||
4519 | g = g->next; | |
143d77c5 | 4520 | |
0f20cc35 DJ |
4521 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4522 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4523 | } |
4524 | ||
4525 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4526 | a sequence of GOTs, each one 16-bit addressable. */ | |
4527 | ||
4528 | static bfd_boolean | |
9719ad41 | 4529 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4530 | asection *got, bfd_size_type pages) |
f4416af6 | 4531 | { |
a8028dd0 | 4532 | struct mips_elf_link_hash_table *htab; |
f4416af6 AO |
4533 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
4534 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
a8028dd0 | 4535 | struct mips_got_info *g, *gg; |
33bb52fb RS |
4536 | unsigned int assign, needed_relocs; |
4537 | bfd *dynobj; | |
f4416af6 | 4538 | |
33bb52fb | 4539 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4540 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4541 | BFD_ASSERT (htab != NULL); |
4542 | ||
a8028dd0 | 4543 | g = htab->got_info; |
f4416af6 | 4544 | g->bfd2got = htab_try_create (1, mips_elf_bfd2got_entry_hash, |
9719ad41 | 4545 | mips_elf_bfd2got_entry_eq, NULL); |
f4416af6 AO |
4546 | if (g->bfd2got == NULL) |
4547 | return FALSE; | |
4548 | ||
4549 | got_per_bfd_arg.bfd2got = g->bfd2got; | |
4550 | got_per_bfd_arg.obfd = abfd; | |
4551 | got_per_bfd_arg.info = info; | |
4552 | ||
4553 | /* Count how many GOT entries each input bfd requires, creating a | |
4554 | map from bfd to got info while at that. */ | |
f4416af6 AO |
4555 | htab_traverse (g->got_entries, mips_elf_make_got_per_bfd, &got_per_bfd_arg); |
4556 | if (got_per_bfd_arg.obfd == NULL) | |
4557 | return FALSE; | |
4558 | ||
c224138d RS |
4559 | /* Also count how many page entries each input bfd requires. */ |
4560 | htab_traverse (g->got_page_entries, mips_elf_make_got_pages_per_bfd, | |
4561 | &got_per_bfd_arg); | |
4562 | if (got_per_bfd_arg.obfd == NULL) | |
4563 | return FALSE; | |
4564 | ||
f4416af6 AO |
4565 | got_per_bfd_arg.current = NULL; |
4566 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4567 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4568 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4569 | - htab->reserved_gotno); |
c224138d | 4570 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 DJ |
4571 | /* The number of globals that will be included in the primary GOT. |
4572 | See the calls to mips_elf_set_global_got_offset below for more | |
4573 | information. */ | |
4574 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4575 | |
4576 | /* Try to merge the GOTs of input bfds together, as long as they | |
4577 | don't seem to exceed the maximum GOT size, choosing one of them | |
4578 | to be the primary GOT. */ | |
4579 | htab_traverse (g->bfd2got, mips_elf_merge_gots, &got_per_bfd_arg); | |
4580 | if (got_per_bfd_arg.obfd == NULL) | |
4581 | return FALSE; | |
4582 | ||
0f20cc35 | 4583 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 AO |
4584 | if (got_per_bfd_arg.primary == NULL) |
4585 | { | |
4586 | g->next = (struct mips_got_info *) | |
4587 | bfd_alloc (abfd, sizeof (struct mips_got_info)); | |
4588 | if (g->next == NULL) | |
4589 | return FALSE; | |
4590 | ||
f4416af6 | 4591 | g->next->global_gotno = 0; |
23cc69b6 | 4592 | g->next->reloc_only_gotno = 0; |
f4416af6 | 4593 | g->next->local_gotno = 0; |
c224138d | 4594 | g->next->page_gotno = 0; |
0f20cc35 | 4595 | g->next->tls_gotno = 0; |
f4416af6 | 4596 | g->next->assigned_gotno = 0; |
0f20cc35 DJ |
4597 | g->next->tls_assigned_gotno = 0; |
4598 | g->next->tls_ldm_offset = MINUS_ONE; | |
f4416af6 AO |
4599 | g->next->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
4600 | mips_elf_multi_got_entry_eq, | |
9719ad41 | 4601 | NULL); |
f4416af6 AO |
4602 | if (g->next->got_entries == NULL) |
4603 | return FALSE; | |
c224138d RS |
4604 | g->next->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4605 | mips_got_page_entry_eq, | |
4606 | NULL); | |
4607 | if (g->next->got_page_entries == NULL) | |
4608 | return FALSE; | |
f4416af6 AO |
4609 | g->next->bfd2got = NULL; |
4610 | } | |
4611 | else | |
4612 | g->next = got_per_bfd_arg.primary; | |
4613 | g->next->next = got_per_bfd_arg.current; | |
4614 | ||
4615 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4616 | gg = g; | |
4617 | g = g->next; | |
4618 | ||
4619 | /* Map the output bfd to the primary got. That's what we're going | |
4620 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4621 | didn't mark in check_relocs, and we want a quick way to find it. | |
4622 | We can't just use gg->next because we're going to reverse the | |
4623 | list. */ | |
4624 | { | |
4625 | struct mips_elf_bfd2got_hash *bfdgot; | |
4626 | void **bfdgotp; | |
143d77c5 | 4627 | |
f4416af6 AO |
4628 | bfdgot = (struct mips_elf_bfd2got_hash *)bfd_alloc |
4629 | (abfd, sizeof (struct mips_elf_bfd2got_hash)); | |
4630 | ||
4631 | if (bfdgot == NULL) | |
4632 | return FALSE; | |
4633 | ||
4634 | bfdgot->bfd = abfd; | |
4635 | bfdgot->g = g; | |
4636 | bfdgotp = htab_find_slot (gg->bfd2got, bfdgot, INSERT); | |
4637 | ||
4638 | BFD_ASSERT (*bfdgotp == NULL); | |
4639 | *bfdgotp = bfdgot; | |
4640 | } | |
4641 | ||
634835ae RS |
4642 | /* Every symbol that is referenced in a dynamic relocation must be |
4643 | present in the primary GOT, so arrange for them to appear after | |
4644 | those that are actually referenced. */ | |
23cc69b6 | 4645 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4646 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4647 | |
f4416af6 | 4648 | set_got_offset_arg.g = NULL; |
634835ae | 4649 | set_got_offset_arg.value = GGA_RELOC_ONLY; |
f4416af6 AO |
4650 | htab_traverse (gg->got_entries, mips_elf_set_global_got_offset, |
4651 | &set_got_offset_arg); | |
634835ae | 4652 | set_got_offset_arg.value = GGA_NORMAL; |
f4416af6 AO |
4653 | htab_traverse (g->got_entries, mips_elf_set_global_got_offset, |
4654 | &set_got_offset_arg); | |
f4416af6 AO |
4655 | |
4656 | /* Now go through the GOTs assigning them offset ranges. | |
4657 | [assigned_gotno, local_gotno[ will be set to the range of local | |
4658 | entries in each GOT. We can then compute the end of a GOT by | |
4659 | adding local_gotno to global_gotno. We reverse the list and make | |
4660 | it circular since then we'll be able to quickly compute the | |
4661 | beginning of a GOT, by computing the end of its predecessor. To | |
4662 | avoid special cases for the primary GOT, while still preserving | |
4663 | assertions that are valid for both single- and multi-got links, | |
4664 | we arrange for the main got struct to have the right number of | |
4665 | global entries, but set its local_gotno such that the initial | |
4666 | offset of the primary GOT is zero. Remember that the primary GOT | |
4667 | will become the last item in the circular linked list, so it | |
4668 | points back to the master GOT. */ | |
4669 | gg->local_gotno = -g->global_gotno; | |
4670 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4671 | gg->tls_gotno = 0; |
f4416af6 AO |
4672 | assign = 0; |
4673 | gg->next = gg; | |
4674 | ||
4675 | do | |
4676 | { | |
4677 | struct mips_got_info *gn; | |
4678 | ||
861fb55a | 4679 | assign += htab->reserved_gotno; |
f4416af6 | 4680 | g->assigned_gotno = assign; |
c224138d RS |
4681 | g->local_gotno += assign; |
4682 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
4683 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4684 | ||
ead49a57 RS |
4685 | /* Take g out of the direct list, and push it onto the reversed |
4686 | list that gg points to. g->next is guaranteed to be nonnull after | |
4687 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4688 | gn = g->next; | |
4689 | g->next = gg->next; | |
4690 | gg->next = g; | |
4691 | ||
0f20cc35 DJ |
4692 | /* Set up any TLS entries. We always place the TLS entries after |
4693 | all non-TLS entries. */ | |
4694 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
4695 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
1fd20d70 | 4696 | BFD_ASSERT (g->tls_assigned_gotno == assign); |
f4416af6 | 4697 | |
ead49a57 | 4698 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4699 | g = gn; |
0626d451 | 4700 | |
33bb52fb RS |
4701 | /* Forbid global symbols in every non-primary GOT from having |
4702 | lazy-binding stubs. */ | |
0626d451 | 4703 | if (g) |
33bb52fb | 4704 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4705 | } |
4706 | while (g); | |
4707 | ||
59b08994 | 4708 | got->size = assign * MIPS_ELF_GOT_SIZE (abfd); |
33bb52fb RS |
4709 | |
4710 | needed_relocs = 0; | |
4711 | set_got_offset_arg.value = MIPS_ELF_GOT_SIZE (abfd); | |
4712 | set_got_offset_arg.info = info; | |
4713 | for (g = gg->next; g && g->next != gg; g = g->next) | |
4714 | { | |
4715 | unsigned int save_assign; | |
4716 | ||
4717 | /* Assign offsets to global GOT entries. */ | |
4718 | save_assign = g->assigned_gotno; | |
4719 | g->assigned_gotno = g->local_gotno; | |
4720 | set_got_offset_arg.g = g; | |
4721 | set_got_offset_arg.needed_relocs = 0; | |
4722 | htab_traverse (g->got_entries, | |
4723 | mips_elf_set_global_got_offset, | |
4724 | &set_got_offset_arg); | |
4725 | needed_relocs += set_got_offset_arg.needed_relocs; | |
4726 | BFD_ASSERT (g->assigned_gotno - g->local_gotno <= g->global_gotno); | |
4727 | ||
4728 | g->assigned_gotno = save_assign; | |
4729 | if (info->shared) | |
4730 | { | |
4731 | needed_relocs += g->local_gotno - g->assigned_gotno; | |
4732 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno | |
4733 | + g->next->global_gotno | |
4734 | + g->next->tls_gotno | |
861fb55a | 4735 | + htab->reserved_gotno); |
33bb52fb RS |
4736 | } |
4737 | } | |
4738 | ||
4739 | if (needed_relocs) | |
4740 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4741 | needed_relocs); | |
143d77c5 | 4742 | |
f4416af6 AO |
4743 | return TRUE; |
4744 | } | |
143d77c5 | 4745 | |
b49e97c9 TS |
4746 | \f |
4747 | /* Returns the first relocation of type r_type found, beginning with | |
4748 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4749 | ||
4750 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4751 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4752 | const Elf_Internal_Rela *relocation, | |
4753 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4754 | { |
c000e262 TS |
4755 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4756 | ||
b49e97c9 TS |
4757 | while (relocation < relend) |
4758 | { | |
c000e262 TS |
4759 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4760 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4761 | return relocation; |
4762 | ||
4763 | ++relocation; | |
4764 | } | |
4765 | ||
4766 | /* We didn't find it. */ | |
b49e97c9 TS |
4767 | return NULL; |
4768 | } | |
4769 | ||
020d7251 | 4770 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 4771 | |
b34976b6 | 4772 | static bfd_boolean |
9719ad41 RS |
4773 | mips_elf_local_relocation_p (bfd *input_bfd, |
4774 | const Elf_Internal_Rela *relocation, | |
020d7251 | 4775 | asection **local_sections) |
b49e97c9 TS |
4776 | { |
4777 | unsigned long r_symndx; | |
4778 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
4779 | size_t extsymoff; |
4780 | ||
4781 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4782 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4783 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
4784 | ||
4785 | if (r_symndx < extsymoff) | |
b34976b6 | 4786 | return TRUE; |
b49e97c9 | 4787 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 4788 | return TRUE; |
b49e97c9 | 4789 | |
b34976b6 | 4790 | return FALSE; |
b49e97c9 TS |
4791 | } |
4792 | \f | |
4793 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4794 | ||
a7ebbfdf | 4795 | bfd_vma |
9719ad41 | 4796 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4797 | { |
4798 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4799 | /* VALUE is negative. */ | |
4800 | value |= ((bfd_vma) - 1) << bits; | |
4801 | ||
4802 | return value; | |
4803 | } | |
4804 | ||
4805 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4806 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4807 | BITS. */ |
4808 | ||
b34976b6 | 4809 | static bfd_boolean |
9719ad41 | 4810 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4811 | { |
4812 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4813 | ||
4814 | if (svalue > (1 << (bits - 1)) - 1) | |
4815 | /* The value is too big. */ | |
b34976b6 | 4816 | return TRUE; |
b49e97c9 TS |
4817 | else if (svalue < -(1 << (bits - 1))) |
4818 | /* The value is too small. */ | |
b34976b6 | 4819 | return TRUE; |
b49e97c9 TS |
4820 | |
4821 | /* All is well. */ | |
b34976b6 | 4822 | return FALSE; |
b49e97c9 TS |
4823 | } |
4824 | ||
4825 | /* Calculate the %high function. */ | |
4826 | ||
4827 | static bfd_vma | |
9719ad41 | 4828 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4829 | { |
4830 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4831 | } | |
4832 | ||
4833 | /* Calculate the %higher function. */ | |
4834 | ||
4835 | static bfd_vma | |
9719ad41 | 4836 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4837 | { |
4838 | #ifdef BFD64 | |
4839 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4840 | #else | |
4841 | abort (); | |
c5ae1840 | 4842 | return MINUS_ONE; |
b49e97c9 TS |
4843 | #endif |
4844 | } | |
4845 | ||
4846 | /* Calculate the %highest function. */ | |
4847 | ||
4848 | static bfd_vma | |
9719ad41 | 4849 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4850 | { |
4851 | #ifdef BFD64 | |
b15e6682 | 4852 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4853 | #else |
4854 | abort (); | |
c5ae1840 | 4855 | return MINUS_ONE; |
b49e97c9 TS |
4856 | #endif |
4857 | } | |
4858 | \f | |
4859 | /* Create the .compact_rel section. */ | |
4860 | ||
b34976b6 | 4861 | static bfd_boolean |
9719ad41 RS |
4862 | mips_elf_create_compact_rel_section |
4863 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4864 | { |
4865 | flagword flags; | |
4866 | register asection *s; | |
4867 | ||
3d4d4302 | 4868 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
4869 | { |
4870 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4871 | | SEC_READONLY); | |
4872 | ||
3d4d4302 | 4873 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4874 | if (s == NULL |
b49e97c9 TS |
4875 | || ! bfd_set_section_alignment (abfd, s, |
4876 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4877 | return FALSE; |
b49e97c9 | 4878 | |
eea6121a | 4879 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4880 | } |
4881 | ||
b34976b6 | 4882 | return TRUE; |
b49e97c9 TS |
4883 | } |
4884 | ||
4885 | /* Create the .got section to hold the global offset table. */ | |
4886 | ||
b34976b6 | 4887 | static bfd_boolean |
23cc69b6 | 4888 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
4889 | { |
4890 | flagword flags; | |
4891 | register asection *s; | |
4892 | struct elf_link_hash_entry *h; | |
14a793b2 | 4893 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
4894 | struct mips_got_info *g; |
4895 | bfd_size_type amt; | |
0a44bf69 RS |
4896 | struct mips_elf_link_hash_table *htab; |
4897 | ||
4898 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 4899 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
4900 | |
4901 | /* This function may be called more than once. */ | |
23cc69b6 RS |
4902 | if (htab->sgot) |
4903 | return TRUE; | |
b49e97c9 TS |
4904 | |
4905 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4906 | | SEC_LINKER_CREATED); | |
4907 | ||
72b4917c TS |
4908 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4909 | in the function stub generation and in the linker script. */ | |
87e0a731 | 4910 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 4911 | if (s == NULL |
72b4917c | 4912 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4913 | return FALSE; |
a8028dd0 | 4914 | htab->sgot = s; |
b49e97c9 TS |
4915 | |
4916 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4917 | linker script because we don't want to define the symbol if we | |
4918 | are not creating a global offset table. */ | |
14a793b2 | 4919 | bh = NULL; |
b49e97c9 TS |
4920 | if (! (_bfd_generic_link_add_one_symbol |
4921 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4922 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4923 | return FALSE; |
14a793b2 AM |
4924 | |
4925 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4926 | h->non_elf = 0; |
4927 | h->def_regular = 1; | |
b49e97c9 | 4928 | h->type = STT_OBJECT; |
d329bcd1 | 4929 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4930 | |
4931 | if (info->shared | |
c152c796 | 4932 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4933 | return FALSE; |
b49e97c9 | 4934 | |
b49e97c9 | 4935 | amt = sizeof (struct mips_got_info); |
9719ad41 | 4936 | g = bfd_alloc (abfd, amt); |
b49e97c9 | 4937 | if (g == NULL) |
b34976b6 | 4938 | return FALSE; |
e3d54347 | 4939 | g->global_gotno = 0; |
23cc69b6 | 4940 | g->reloc_only_gotno = 0; |
0f20cc35 | 4941 | g->tls_gotno = 0; |
861fb55a | 4942 | g->local_gotno = 0; |
c224138d | 4943 | g->page_gotno = 0; |
861fb55a | 4944 | g->assigned_gotno = 0; |
f4416af6 AO |
4945 | g->bfd2got = NULL; |
4946 | g->next = NULL; | |
0f20cc35 | 4947 | g->tls_ldm_offset = MINUS_ONE; |
b15e6682 | 4948 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
9719ad41 | 4949 | mips_elf_got_entry_eq, NULL); |
b15e6682 AO |
4950 | if (g->got_entries == NULL) |
4951 | return FALSE; | |
c224138d RS |
4952 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4953 | mips_got_page_entry_eq, NULL); | |
4954 | if (g->got_page_entries == NULL) | |
4955 | return FALSE; | |
a8028dd0 | 4956 | htab->got_info = g; |
f0abc2a1 | 4957 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
4958 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4959 | ||
861fb55a | 4960 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
4961 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
4962 | SEC_ALLOC | SEC_LOAD | |
4963 | | SEC_HAS_CONTENTS | |
4964 | | SEC_IN_MEMORY | |
4965 | | SEC_LINKER_CREATED); | |
861fb55a DJ |
4966 | if (s == NULL) |
4967 | return FALSE; | |
4968 | htab->sgotplt = s; | |
0a44bf69 | 4969 | |
b34976b6 | 4970 | return TRUE; |
b49e97c9 | 4971 | } |
b49e97c9 | 4972 | \f |
0a44bf69 RS |
4973 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4974 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4975 | shared objects; they are not used in executables. */ | |
4976 | ||
4977 | static bfd_boolean | |
4978 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4979 | { | |
4980 | return (mips_elf_hash_table (info)->is_vxworks | |
4981 | && info->shared | |
4982 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4983 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4984 | } | |
861fb55a DJ |
4985 | |
4986 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
4987 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
4988 | which determines whether the destination function ever requires a | |
4989 | stub. */ | |
4990 | ||
4991 | static bfd_boolean | |
8f0c309a CLT |
4992 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
4993 | bfd_boolean target_is_16_bit_code_p) | |
861fb55a DJ |
4994 | { |
4995 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
4996 | where the onus is on the compiler or programmer to perform any | |
4997 | necessary initialization of $25. Sometimes such initialization | |
4998 | is unnecessary; for example, -mno-shared functions do not use | |
4999 | the incoming value of $25, and may therefore be called directly. */ | |
5000 | if (PIC_OBJECT_P (input_bfd)) | |
5001 | return FALSE; | |
5002 | ||
5003 | switch (r_type) | |
5004 | { | |
5005 | case R_MIPS_26: | |
5006 | case R_MIPS_PC16: | |
df58fc94 RS |
5007 | case R_MICROMIPS_26_S1: |
5008 | case R_MICROMIPS_PC7_S1: | |
5009 | case R_MICROMIPS_PC10_S1: | |
5010 | case R_MICROMIPS_PC16_S1: | |
5011 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
5012 | return TRUE; |
5013 | ||
8f0c309a CLT |
5014 | case R_MIPS16_26: |
5015 | return !target_is_16_bit_code_p; | |
5016 | ||
861fb55a DJ |
5017 | default: |
5018 | return FALSE; | |
5019 | } | |
5020 | } | |
0a44bf69 | 5021 | \f |
b49e97c9 TS |
5022 | /* Calculate the value produced by the RELOCATION (which comes from |
5023 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5024 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5025 | ||
5026 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 5027 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 5028 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
5029 | |
5030 | This function returns bfd_reloc_continue if the caller need take no | |
5031 | further action regarding this relocation, bfd_reloc_notsupported if | |
5032 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5033 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5034 | ||
5035 | static bfd_reloc_status_type | |
9719ad41 RS |
5036 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
5037 | asection *input_section, | |
5038 | struct bfd_link_info *info, | |
5039 | const Elf_Internal_Rela *relocation, | |
5040 | bfd_vma addend, reloc_howto_type *howto, | |
5041 | Elf_Internal_Sym *local_syms, | |
5042 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
5043 | const char **namep, |
5044 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 5045 | bfd_boolean save_addend) |
b49e97c9 TS |
5046 | { |
5047 | /* The eventual value we will return. */ | |
5048 | bfd_vma value; | |
5049 | /* The address of the symbol against which the relocation is | |
5050 | occurring. */ | |
5051 | bfd_vma symbol = 0; | |
5052 | /* The final GP value to be used for the relocatable, executable, or | |
5053 | shared object file being produced. */ | |
0a61c8c2 | 5054 | bfd_vma gp; |
b49e97c9 TS |
5055 | /* The place (section offset or address) of the storage unit being |
5056 | relocated. */ | |
5057 | bfd_vma p; | |
5058 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 5059 | bfd_vma gp0; |
b49e97c9 TS |
5060 | /* The offset into the global offset table at which the address of |
5061 | the relocation entry symbol, adjusted by the addend, resides | |
5062 | during execution. */ | |
5063 | bfd_vma g = MINUS_ONE; | |
5064 | /* The section in which the symbol referenced by the relocation is | |
5065 | located. */ | |
5066 | asection *sec = NULL; | |
5067 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5068 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5069 | symbol. */ |
b34976b6 AM |
5070 | bfd_boolean local_p, was_local_p; |
5071 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
5072 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
5073 | /* TRUE if the symbol referred to by this relocation is |
5074 | "__gnu_local_gp". */ | |
5075 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
5076 | Elf_Internal_Shdr *symtab_hdr; |
5077 | size_t extsymoff; | |
5078 | unsigned long r_symndx; | |
5079 | int r_type; | |
b34976b6 | 5080 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5081 | relocation value. */ |
b34976b6 AM |
5082 | bfd_boolean overflowed_p; |
5083 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
5084 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
df58fc94 | 5085 | bfd_boolean target_is_micromips_code_p = FALSE; |
0a44bf69 RS |
5086 | struct mips_elf_link_hash_table *htab; |
5087 | bfd *dynobj; | |
5088 | ||
5089 | dynobj = elf_hash_table (info)->dynobj; | |
5090 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5091 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5092 | |
5093 | /* Parse the relocation. */ | |
5094 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5095 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5096 | p = (input_section->output_section->vma | |
5097 | + input_section->output_offset | |
5098 | + relocation->r_offset); | |
5099 | ||
5100 | /* Assume that there will be no overflow. */ | |
b34976b6 | 5101 | overflowed_p = FALSE; |
b49e97c9 TS |
5102 | |
5103 | /* Figure out whether or not the symbol is local, and get the offset | |
5104 | used in the array of hash table entries. */ | |
5105 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5106 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5107 | local_sections); |
bce03d3d | 5108 | was_local_p = local_p; |
b49e97c9 TS |
5109 | if (! elf_bad_symtab (input_bfd)) |
5110 | extsymoff = symtab_hdr->sh_info; | |
5111 | else | |
5112 | { | |
5113 | /* The symbol table does not follow the rule that local symbols | |
5114 | must come before globals. */ | |
5115 | extsymoff = 0; | |
5116 | } | |
5117 | ||
5118 | /* Figure out the value of the symbol. */ | |
5119 | if (local_p) | |
5120 | { | |
5121 | Elf_Internal_Sym *sym; | |
5122 | ||
5123 | sym = local_syms + r_symndx; | |
5124 | sec = local_sections[r_symndx]; | |
5125 | ||
5126 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
5127 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
5128 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 5129 | symbol += sym->st_value; |
d4df96e6 L |
5130 | if ((sec->flags & SEC_MERGE) |
5131 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
5132 | { | |
5133 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5134 | addend -= symbol; | |
5135 | addend += sec->output_section->vma + sec->output_offset; | |
5136 | } | |
b49e97c9 | 5137 | |
df58fc94 RS |
5138 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5139 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5140 | ++symbol; |
5141 | ||
5142 | /* Record the name of this symbol, for our caller. */ | |
5143 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5144 | symtab_hdr->sh_link, | |
5145 | sym->st_name); | |
5146 | if (*namep == '\0') | |
5147 | *namep = bfd_section_name (input_bfd, sec); | |
5148 | ||
30c09090 | 5149 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
df58fc94 | 5150 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); |
b49e97c9 TS |
5151 | } |
5152 | else | |
5153 | { | |
560e09e9 NC |
5154 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5155 | ||
b49e97c9 TS |
5156 | /* For global symbols we look up the symbol in the hash-table. */ |
5157 | h = ((struct mips_elf_link_hash_entry *) | |
5158 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5159 | /* Find the real hash-table entry for this symbol. */ | |
5160 | while (h->root.root.type == bfd_link_hash_indirect | |
5161 | || h->root.root.type == bfd_link_hash_warning) | |
5162 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5163 | ||
5164 | /* Record the name of this symbol, for our caller. */ | |
5165 | *namep = h->root.root.root.string; | |
5166 | ||
5167 | /* See if this is the special _gp_disp symbol. Note that such a | |
5168 | symbol must always be a global symbol. */ | |
560e09e9 | 5169 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5170 | && ! NEWABI_P (input_bfd)) |
5171 | { | |
5172 | /* Relocations against _gp_disp are permitted only with | |
5173 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5174 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5175 | return bfd_reloc_notsupported; |
5176 | ||
b34976b6 | 5177 | gp_disp_p = TRUE; |
b49e97c9 | 5178 | } |
bbe506e8 TS |
5179 | /* See if this is the special _gp symbol. Note that such a |
5180 | symbol must always be a global symbol. */ | |
5181 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
5182 | gnu_local_gp_p = TRUE; | |
5183 | ||
5184 | ||
b49e97c9 TS |
5185 | /* If this symbol is defined, calculate its address. Note that |
5186 | _gp_disp is a magic symbol, always implicitly defined by the | |
5187 | linker, so it's inappropriate to check to see whether or not | |
5188 | its defined. */ | |
5189 | else if ((h->root.root.type == bfd_link_hash_defined | |
5190 | || h->root.root.type == bfd_link_hash_defweak) | |
5191 | && h->root.root.u.def.section) | |
5192 | { | |
5193 | sec = h->root.root.u.def.section; | |
5194 | if (sec->output_section) | |
5195 | symbol = (h->root.root.u.def.value | |
5196 | + sec->output_section->vma | |
5197 | + sec->output_offset); | |
5198 | else | |
5199 | symbol = h->root.root.u.def.value; | |
5200 | } | |
5201 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5202 | /* We allow relocations against undefined weak symbols, giving | |
5203 | it the value zero, so that you can undefined weak functions | |
5204 | and check to see if they exist by looking at their | |
5205 | addresses. */ | |
5206 | symbol = 0; | |
59c2e50f | 5207 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5208 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5209 | symbol = 0; | |
a4d0f181 TS |
5210 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5211 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5212 | { |
5213 | /* If this is a dynamic link, we should have created a | |
5214 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
5215 | in in _bfd_mips_elf_create_dynamic_sections. | |
5216 | Otherwise, we should define the symbol with a value of 0. | |
5217 | FIXME: It should probably get into the symbol table | |
5218 | somehow as well. */ | |
5219 | BFD_ASSERT (! info->shared); | |
5220 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
5221 | symbol = 0; | |
5222 | } | |
5e2b0d47 NC |
5223 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5224 | { | |
5225 | /* This is an optional symbol - an Irix specific extension to the | |
5226 | ELF spec. Ignore it for now. | |
5227 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5228 | than simply ignoring them, but we do not handle this for now. | |
5229 | For information see the "64-bit ELF Object File Specification" | |
5230 | which is available from here: | |
5231 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5232 | symbol = 0; | |
5233 | } | |
e7e2196d MR |
5234 | else if ((*info->callbacks->undefined_symbol) |
5235 | (info, h->root.root.root.string, input_bfd, | |
5236 | input_section, relocation->r_offset, | |
5237 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) | |
5238 | || ELF_ST_VISIBILITY (h->root.other))) | |
5239 | { | |
5240 | return bfd_reloc_undefined; | |
5241 | } | |
b49e97c9 TS |
5242 | else |
5243 | { | |
e7e2196d | 5244 | return bfd_reloc_notsupported; |
b49e97c9 TS |
5245 | } |
5246 | ||
30c09090 | 5247 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
df58fc94 RS |
5248 | /* If the output section is the PLT section, |
5249 | then the target is not microMIPS. */ | |
5250 | target_is_micromips_code_p = (htab->splt != sec | |
5251 | && ELF_ST_IS_MICROMIPS (h->root.other)); | |
b49e97c9 TS |
5252 | } |
5253 | ||
738e5348 RS |
5254 | /* If this is a reference to a 16-bit function with a stub, we need |
5255 | to redirect the relocation to the stub unless: | |
5256 | ||
5257 | (a) the relocation is for a MIPS16 JAL; | |
5258 | ||
5259 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5260 | non-MIPS16 uses of the GOT slot; or | |
5261 | ||
5262 | (c) the section allows direct references to MIPS16 functions. */ | |
5263 | if (r_type != R_MIPS16_26 | |
5264 | && !info->relocatable | |
5265 | && ((h != NULL | |
5266 | && h->fn_stub != NULL | |
5267 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 TS |
5268 | || (local_p |
5269 | && elf_tdata (input_bfd)->local_stubs != NULL | |
b49e97c9 | 5270 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
738e5348 | 5271 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5272 | { |
5273 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5274 | have already noticed that we were going to need the | |
5275 | stub. */ | |
5276 | if (local_p) | |
8f0c309a CLT |
5277 | { |
5278 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
5279 | value = 0; | |
5280 | } | |
b49e97c9 TS |
5281 | else |
5282 | { | |
5283 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5284 | if (h->la25_stub) |
5285 | { | |
5286 | /* If a LA25 header for the stub itself exists, point to the | |
5287 | prepended LUI/ADDIU sequence. */ | |
5288 | sec = h->la25_stub->stub_section; | |
5289 | value = h->la25_stub->offset; | |
5290 | } | |
5291 | else | |
5292 | { | |
5293 | sec = h->fn_stub; | |
5294 | value = 0; | |
5295 | } | |
b49e97c9 TS |
5296 | } |
5297 | ||
8f0c309a | 5298 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 TS |
5299 | /* The target is 16-bit, but the stub isn't. */ |
5300 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
5301 | } |
5302 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
5303 | need to redirect the call to the stub. Note that we specifically |
5304 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
5305 | use an indirect stub instead. */ | |
1049f94e | 5306 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 5307 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 TS |
5308 | || (local_p |
5309 | && elf_tdata (input_bfd)->local_call_stubs != NULL | |
5310 | && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
5311 | && !target_is_16_bit_code_p) |
5312 | { | |
b9d58d71 TS |
5313 | if (local_p) |
5314 | sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx]; | |
5315 | else | |
b49e97c9 | 5316 | { |
b9d58d71 TS |
5317 | /* If both call_stub and call_fp_stub are defined, we can figure |
5318 | out which one to use by checking which one appears in the input | |
5319 | file. */ | |
5320 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5321 | { |
b9d58d71 | 5322 | asection *o; |
68ffbac6 | 5323 | |
b9d58d71 TS |
5324 | sec = NULL; |
5325 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5326 | { |
b9d58d71 TS |
5327 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5328 | { | |
5329 | sec = h->call_fp_stub; | |
5330 | break; | |
5331 | } | |
b49e97c9 | 5332 | } |
b9d58d71 TS |
5333 | if (sec == NULL) |
5334 | sec = h->call_stub; | |
b49e97c9 | 5335 | } |
b9d58d71 | 5336 | else if (h->call_stub != NULL) |
b49e97c9 | 5337 | sec = h->call_stub; |
b9d58d71 TS |
5338 | else |
5339 | sec = h->call_fp_stub; | |
5340 | } | |
b49e97c9 | 5341 | |
eea6121a | 5342 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5343 | symbol = sec->output_section->vma + sec->output_offset; |
5344 | } | |
861fb55a DJ |
5345 | /* If this is a direct call to a PIC function, redirect to the |
5346 | non-PIC stub. */ | |
5347 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5348 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5349 | target_is_16_bit_code_p)) | |
861fb55a DJ |
5350 | symbol = (h->la25_stub->stub_section->output_section->vma |
5351 | + h->la25_stub->stub_section->output_offset | |
5352 | + h->la25_stub->offset); | |
b49e97c9 | 5353 | |
df58fc94 RS |
5354 | /* Make sure MIPS16 and microMIPS are not used together. */ |
5355 | if ((r_type == R_MIPS16_26 && target_is_micromips_code_p) | |
5356 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) | |
5357 | { | |
5358 | (*_bfd_error_handler) | |
5359 | (_("MIPS16 and microMIPS functions cannot call each other")); | |
5360 | return bfd_reloc_notsupported; | |
5361 | } | |
5362 | ||
b49e97c9 | 5363 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5364 | mode change. However, we can ignore calls to undefined weak symbols, |
5365 | which should never be executed at runtime. This exception is important | |
5366 | because the assembly writer may have "known" that any definition of the | |
5367 | symbol would be 16-bit code, and that direct jumps were therefore | |
5368 | acceptable. */ | |
5369 | *cross_mode_jump_p = (!info->relocatable | |
5370 | && !(h && h->root.root.type == bfd_link_hash_undefweak) | |
5371 | && ((r_type == R_MIPS16_26 && !target_is_16_bit_code_p) | |
5372 | || (r_type == R_MICROMIPS_26_S1 | |
5373 | && !target_is_micromips_code_p) | |
5374 | || ((r_type == R_MIPS_26 || r_type == R_MIPS_JALR) | |
5375 | && (target_is_16_bit_code_p | |
5376 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5377 | |
9f1a453e MR |
5378 | local_p = (h == NULL |
5379 | || (h->got_only_for_calls | |
5380 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
5381 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))); | |
b49e97c9 | 5382 | |
0a61c8c2 RS |
5383 | gp0 = _bfd_get_gp_value (input_bfd); |
5384 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5385 | if (htab->got_info) |
a8028dd0 | 5386 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5387 | |
5388 | if (gnu_local_gp_p) | |
5389 | symbol = gp; | |
5390 | ||
df58fc94 RS |
5391 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5392 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5393 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5394 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5395 | { |
df58fc94 RS |
5396 | r_type = (micromips_reloc_p (r_type) |
5397 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5398 | addend = 0; |
5399 | } | |
5400 | ||
e77760d2 | 5401 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5402 | to need it, get it now. */ |
b49e97c9 TS |
5403 | switch (r_type) |
5404 | { | |
738e5348 RS |
5405 | case R_MIPS16_CALL16: |
5406 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5407 | case R_MIPS_CALL16: |
5408 | case R_MIPS_GOT16: | |
5409 | case R_MIPS_GOT_DISP: | |
5410 | case R_MIPS_GOT_HI16: | |
5411 | case R_MIPS_CALL_HI16: | |
5412 | case R_MIPS_GOT_LO16: | |
5413 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5414 | case R_MICROMIPS_CALL16: |
5415 | case R_MICROMIPS_GOT16: | |
5416 | case R_MICROMIPS_GOT_DISP: | |
5417 | case R_MICROMIPS_GOT_HI16: | |
5418 | case R_MICROMIPS_CALL_HI16: | |
5419 | case R_MICROMIPS_GOT_LO16: | |
5420 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5421 | case R_MIPS_TLS_GD: |
5422 | case R_MIPS_TLS_GOTTPREL: | |
5423 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5424 | case R_MIPS16_TLS_GD: |
5425 | case R_MIPS16_TLS_GOTTPREL: | |
5426 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5427 | case R_MICROMIPS_TLS_GD: |
5428 | case R_MICROMIPS_TLS_GOTTPREL: | |
5429 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5430 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5431 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5432 | { |
0a44bf69 | 5433 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5434 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5435 | if (g == MINUS_ONE) |
5436 | return bfd_reloc_outofrange; | |
5437 | } | |
5438 | else if (!local_p) | |
b49e97c9 | 5439 | { |
0a44bf69 RS |
5440 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5441 | entry, which is initialized to point at the PLT stub. */ | |
5442 | if (htab->is_vxworks | |
df58fc94 RS |
5443 | && (call_hi16_reloc_p (r_type) |
5444 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5445 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5446 | { |
5447 | BFD_ASSERT (addend == 0); | |
5448 | BFD_ASSERT (h->root.needs_plt); | |
5449 | g = mips_elf_gotplt_index (info, &h->root); | |
5450 | } | |
5451 | else | |
b49e97c9 | 5452 | { |
020d7251 | 5453 | BFD_ASSERT (addend == 0); |
0a44bf69 RS |
5454 | g = mips_elf_global_got_index (dynobj, input_bfd, |
5455 | &h->root, r_type, info); | |
5456 | if (h->tls_type == GOT_NORMAL | |
020d7251 RS |
5457 | && !elf_hash_table (info)->dynamic_sections_created) |
5458 | /* This is a static link. We must initialize the GOT entry. */ | |
a8028dd0 | 5459 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->sgot->contents + g); |
b49e97c9 TS |
5460 | } |
5461 | } | |
0a44bf69 | 5462 | else if (!htab->is_vxworks |
738e5348 | 5463 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5464 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5465 | break; |
5466 | else | |
5467 | { | |
5c18022e | 5468 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5469 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5470 | if (g == MINUS_ONE) |
5471 | return bfd_reloc_outofrange; | |
5472 | } | |
5473 | ||
5474 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5475 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5476 | break; |
b49e97c9 TS |
5477 | } |
5478 | ||
0a44bf69 RS |
5479 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5480 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5481 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5482 | { | |
5483 | Elf_Internal_Rela outrel; | |
5484 | bfd_byte *loc; | |
5485 | asection *s; | |
5486 | ||
5487 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5488 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5489 | ||
5490 | outrel.r_offset = (input_section->output_section->vma | |
5491 | + input_section->output_offset | |
5492 | + relocation->r_offset); | |
5493 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5494 | outrel.r_addend = addend; | |
5495 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5496 | |
5497 | /* If we've written this relocation for a readonly section, | |
5498 | we need to set DF_TEXTREL again, so that we do not delete the | |
5499 | DT_TEXTREL tag. */ | |
5500 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5501 | info->flags |= DF_TEXTREL; | |
5502 | ||
0a44bf69 RS |
5503 | *valuep = 0; |
5504 | return bfd_reloc_ok; | |
5505 | } | |
5506 | ||
b49e97c9 TS |
5507 | /* Figure out what kind of relocation is being performed. */ |
5508 | switch (r_type) | |
5509 | { | |
5510 | case R_MIPS_NONE: | |
5511 | return bfd_reloc_continue; | |
5512 | ||
5513 | case R_MIPS_16: | |
a7ebbfdf | 5514 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
5515 | overflowed_p = mips_elf_overflow_p (value, 16); |
5516 | break; | |
5517 | ||
5518 | case R_MIPS_32: | |
5519 | case R_MIPS_REL32: | |
5520 | case R_MIPS_64: | |
5521 | if ((info->shared | |
861fb55a | 5522 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5523 | && h != NULL |
f5385ebf | 5524 | && h->root.def_dynamic |
861fb55a DJ |
5525 | && !h->root.def_regular |
5526 | && !h->has_static_relocs)) | |
cf35638d | 5527 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
5528 | && (h == NULL |
5529 | || h->root.root.type != bfd_link_hash_undefweak | |
5530 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
5531 | && (input_section->flags & SEC_ALLOC) != 0) |
5532 | { | |
861fb55a | 5533 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5534 | where the symbol will end up. So, we create a relocation |
5535 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5536 | linker. We must do the same for executable references to |
5537 | shared library symbols, unless we've decided to use copy | |
5538 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5539 | value = addend; |
5540 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5541 | info, | |
5542 | relocation, | |
5543 | h, | |
5544 | sec, | |
5545 | symbol, | |
5546 | &value, | |
5547 | input_section)) | |
5548 | return bfd_reloc_undefined; | |
5549 | } | |
5550 | else | |
5551 | { | |
5552 | if (r_type != R_MIPS_REL32) | |
5553 | value = symbol + addend; | |
5554 | else | |
5555 | value = addend; | |
5556 | } | |
5557 | value &= howto->dst_mask; | |
092dcd75 CD |
5558 | break; |
5559 | ||
5560 | case R_MIPS_PC32: | |
5561 | value = symbol + addend - p; | |
5562 | value &= howto->dst_mask; | |
b49e97c9 TS |
5563 | break; |
5564 | ||
b49e97c9 TS |
5565 | case R_MIPS16_26: |
5566 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5567 | R_MIPS_26. It's only the storage of the relocated field into | |
5568 | the output file that's different. That's handled in | |
5569 | mips_elf_perform_relocation. So, we just fall through to the | |
5570 | R_MIPS_26 case here. */ | |
5571 | case R_MIPS_26: | |
df58fc94 RS |
5572 | case R_MICROMIPS_26_S1: |
5573 | { | |
5574 | unsigned int shift; | |
5575 | ||
5576 | /* Make sure the target of JALX is word-aligned. Bit 0 must be | |
5577 | the correct ISA mode selector and bit 1 must be 0. */ | |
5578 | if (*cross_mode_jump_p && (symbol & 3) != (r_type == R_MIPS_26)) | |
5579 | return bfd_reloc_outofrange; | |
5580 | ||
5581 | /* Shift is 2, unusually, for microMIPS JALX. */ | |
5582 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
5583 | ||
5584 | if (was_local_p) | |
5585 | value = addend | ((p + 4) & (0xfc000000 << shift)); | |
5586 | else | |
5587 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); | |
5588 | value = (value + symbol) >> shift; | |
5589 | if (!was_local_p && h->root.root.type != bfd_link_hash_undefweak) | |
5590 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); | |
5591 | value &= howto->dst_mask; | |
5592 | } | |
b49e97c9 TS |
5593 | break; |
5594 | ||
0f20cc35 | 5595 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 5596 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 5597 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
5598 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
5599 | & howto->dst_mask); | |
5600 | break; | |
5601 | ||
5602 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5603 | case R_MIPS_TLS_DTPREL32: |
5604 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 5605 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 5606 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
5607 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5608 | break; | |
5609 | ||
5610 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 5611 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 5612 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
5613 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
5614 | & howto->dst_mask); | |
5615 | break; | |
5616 | ||
5617 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
5618 | case R_MIPS_TLS_TPREL32: |
5619 | case R_MIPS_TLS_TPREL64: | |
5620 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 5621 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
5622 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
5623 | break; | |
5624 | ||
b49e97c9 | 5625 | case R_MIPS_HI16: |
d6f16593 | 5626 | case R_MIPS16_HI16: |
df58fc94 | 5627 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
5628 | if (!gp_disp_p) |
5629 | { | |
5630 | value = mips_elf_high (addend + symbol); | |
5631 | value &= howto->dst_mask; | |
5632 | } | |
5633 | else | |
5634 | { | |
d6f16593 MR |
5635 | /* For MIPS16 ABI code we generate this sequence |
5636 | 0: li $v0,%hi(_gp_disp) | |
5637 | 4: addiupc $v1,%lo(_gp_disp) | |
5638 | 8: sll $v0,16 | |
5639 | 12: addu $v0,$v1 | |
5640 | 14: move $gp,$v0 | |
5641 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
5642 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
5643 | ADDIUPC clears the low two bits of the instruction address, | |
5644 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 5645 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 5646 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
5647 | /* The microMIPS .cpload sequence uses the same assembly |
5648 | instructions as the traditional psABI version, but the | |
5649 | incoming $t9 has the low bit set. */ | |
5650 | else if (r_type == R_MICROMIPS_HI16) | |
5651 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
5652 | else |
5653 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5654 | overflowed_p = mips_elf_overflow_p (value, 16); |
5655 | } | |
5656 | break; | |
5657 | ||
5658 | case R_MIPS_LO16: | |
d6f16593 | 5659 | case R_MIPS16_LO16: |
df58fc94 RS |
5660 | case R_MICROMIPS_LO16: |
5661 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
5662 | if (!gp_disp_p) |
5663 | value = (symbol + addend) & howto->dst_mask; | |
5664 | else | |
5665 | { | |
d6f16593 MR |
5666 | /* See the comment for R_MIPS16_HI16 above for the reason |
5667 | for this conditional. */ | |
5668 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 5669 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
5670 | else if (r_type == R_MICROMIPS_LO16 |
5671 | || r_type == R_MICROMIPS_HI0_LO16) | |
5672 | value = addend + gp - p + 3; | |
d6f16593 MR |
5673 | else |
5674 | value = addend + gp - p + 4; | |
b49e97c9 | 5675 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5676 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5677 | _gp_disp are normally generated from the .cpload |
5678 | pseudo-op. It generates code that normally looks like | |
5679 | this: | |
5680 | ||
5681 | lui $gp,%hi(_gp_disp) | |
5682 | addiu $gp,$gp,%lo(_gp_disp) | |
5683 | addu $gp,$gp,$t9 | |
5684 | ||
5685 | Here $t9 holds the address of the function being called, | |
5686 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5687 | relocation can easily overflow in this situation, but the | |
5688 | R_MIPS_HI16 relocation will handle the overflow. | |
5689 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5690 | not check for overflow here. */ | |
5691 | } | |
5692 | break; | |
5693 | ||
5694 | case R_MIPS_LITERAL: | |
df58fc94 | 5695 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
5696 | /* Because we don't merge literal sections, we can handle this |
5697 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5698 | shared literals, and then we will need to additional work | |
5699 | here. */ | |
5700 | ||
5701 | /* Fall through. */ | |
5702 | ||
5703 | case R_MIPS16_GPREL: | |
5704 | /* The R_MIPS16_GPREL performs the same calculation as | |
5705 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5706 | order. We don't need to do anything special here; the | |
5707 | differences are handled in mips_elf_perform_relocation. */ | |
5708 | case R_MIPS_GPREL16: | |
df58fc94 RS |
5709 | case R_MICROMIPS_GPREL7_S2: |
5710 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
5711 | /* Only sign-extend the addend if it was extracted from the |
5712 | instruction. If the addend was separate, leave it alone, | |
5713 | otherwise we may lose significant bits. */ | |
5714 | if (howto->partial_inplace) | |
a7ebbfdf | 5715 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5716 | value = symbol + addend - gp; |
5717 | /* If the symbol was local, any earlier relocatable links will | |
5718 | have adjusted its addend with the gp offset, so compensate | |
5719 | for that now. Don't do it for symbols forced local in this | |
5720 | link, though, since they won't have had the gp offset applied | |
5721 | to them before. */ | |
5722 | if (was_local_p) | |
5723 | value += gp0; | |
b49e97c9 TS |
5724 | overflowed_p = mips_elf_overflow_p (value, 16); |
5725 | break; | |
5726 | ||
738e5348 RS |
5727 | case R_MIPS16_GOT16: |
5728 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
5729 | case R_MIPS_GOT16: |
5730 | case R_MIPS_CALL16: | |
df58fc94 RS |
5731 | case R_MICROMIPS_GOT16: |
5732 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 5733 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 5734 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 5735 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 5736 | { |
5c18022e | 5737 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 5738 | symbol + addend, !was_local_p); |
b49e97c9 TS |
5739 | if (value == MINUS_ONE) |
5740 | return bfd_reloc_outofrange; | |
5741 | value | |
a8028dd0 | 5742 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5743 | overflowed_p = mips_elf_overflow_p (value, 16); |
5744 | break; | |
5745 | } | |
5746 | ||
5747 | /* Fall through. */ | |
5748 | ||
0f20cc35 DJ |
5749 | case R_MIPS_TLS_GD: |
5750 | case R_MIPS_TLS_GOTTPREL: | |
5751 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5752 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
5753 | case R_MIPS16_TLS_GD: |
5754 | case R_MIPS16_TLS_GOTTPREL: | |
5755 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5756 | case R_MICROMIPS_TLS_GD: |
5757 | case R_MICROMIPS_TLS_GOTTPREL: | |
5758 | case R_MICROMIPS_TLS_LDM: | |
5759 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
5760 | value = g; |
5761 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5762 | break; | |
5763 | ||
5764 | case R_MIPS_GPREL32: | |
bce03d3d AO |
5765 | value = (addend + symbol + gp0 - gp); |
5766 | if (!save_addend) | |
5767 | value &= howto->dst_mask; | |
b49e97c9 TS |
5768 | break; |
5769 | ||
5770 | case R_MIPS_PC16: | |
bad36eac DJ |
5771 | case R_MIPS_GNU_REL16_S2: |
5772 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
5773 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
5774 | value >>= howto->rightshift; |
5775 | value &= howto->dst_mask; | |
b49e97c9 TS |
5776 | break; |
5777 | ||
df58fc94 RS |
5778 | case R_MICROMIPS_PC7_S1: |
5779 | value = symbol + _bfd_mips_elf_sign_extend (addend, 8) - p; | |
5780 | overflowed_p = mips_elf_overflow_p (value, 8); | |
5781 | value >>= howto->rightshift; | |
5782 | value &= howto->dst_mask; | |
5783 | break; | |
5784 | ||
5785 | case R_MICROMIPS_PC10_S1: | |
5786 | value = symbol + _bfd_mips_elf_sign_extend (addend, 11) - p; | |
5787 | overflowed_p = mips_elf_overflow_p (value, 11); | |
5788 | value >>= howto->rightshift; | |
5789 | value &= howto->dst_mask; | |
5790 | break; | |
5791 | ||
5792 | case R_MICROMIPS_PC16_S1: | |
5793 | value = symbol + _bfd_mips_elf_sign_extend (addend, 17) - p; | |
5794 | overflowed_p = mips_elf_overflow_p (value, 17); | |
5795 | value >>= howto->rightshift; | |
5796 | value &= howto->dst_mask; | |
5797 | break; | |
5798 | ||
5799 | case R_MICROMIPS_PC23_S2: | |
5800 | value = symbol + _bfd_mips_elf_sign_extend (addend, 25) - ((p | 3) ^ 3); | |
5801 | overflowed_p = mips_elf_overflow_p (value, 25); | |
5802 | value >>= howto->rightshift; | |
5803 | value &= howto->dst_mask; | |
5804 | break; | |
5805 | ||
b49e97c9 TS |
5806 | case R_MIPS_GOT_HI16: |
5807 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
5808 | case R_MICROMIPS_GOT_HI16: |
5809 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
5810 | /* We're allowed to handle these two relocations identically. |
5811 | The dynamic linker is allowed to handle the CALL relocations | |
5812 | differently by creating a lazy evaluation stub. */ | |
5813 | value = g; | |
5814 | value = mips_elf_high (value); | |
5815 | value &= howto->dst_mask; | |
5816 | break; | |
5817 | ||
5818 | case R_MIPS_GOT_LO16: | |
5819 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5820 | case R_MICROMIPS_GOT_LO16: |
5821 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
5822 | value = g & howto->dst_mask; |
5823 | break; | |
5824 | ||
5825 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 5826 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 5827 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
5828 | if (value == MINUS_ONE) |
5829 | return bfd_reloc_outofrange; | |
a8028dd0 | 5830 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5831 | overflowed_p = mips_elf_overflow_p (value, 16); |
5832 | break; | |
5833 | ||
5834 | case R_MIPS_GOT_OFST: | |
df58fc94 | 5835 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 5836 | if (local_p) |
5c18022e | 5837 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
5838 | else |
5839 | value = addend; | |
b49e97c9 TS |
5840 | overflowed_p = mips_elf_overflow_p (value, 16); |
5841 | break; | |
5842 | ||
5843 | case R_MIPS_SUB: | |
df58fc94 | 5844 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
5845 | value = symbol - addend; |
5846 | value &= howto->dst_mask; | |
5847 | break; | |
5848 | ||
5849 | case R_MIPS_HIGHER: | |
df58fc94 | 5850 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
5851 | value = mips_elf_higher (addend + symbol); |
5852 | value &= howto->dst_mask; | |
5853 | break; | |
5854 | ||
5855 | case R_MIPS_HIGHEST: | |
df58fc94 | 5856 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
5857 | value = mips_elf_highest (addend + symbol); |
5858 | value &= howto->dst_mask; | |
5859 | break; | |
5860 | ||
5861 | case R_MIPS_SCN_DISP: | |
df58fc94 | 5862 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
5863 | value = symbol + addend - sec->output_offset; |
5864 | value &= howto->dst_mask; | |
5865 | break; | |
5866 | ||
b49e97c9 | 5867 | case R_MIPS_JALR: |
df58fc94 | 5868 | case R_MICROMIPS_JALR: |
1367d393 ILT |
5869 | /* This relocation is only a hint. In some cases, we optimize |
5870 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
5871 | when the symbol does not resolve locally. */ |
5872 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 ILT |
5873 | return bfd_reloc_continue; |
5874 | value = symbol + addend; | |
5875 | break; | |
b49e97c9 | 5876 | |
1367d393 | 5877 | case R_MIPS_PJUMP: |
b49e97c9 TS |
5878 | case R_MIPS_GNU_VTINHERIT: |
5879 | case R_MIPS_GNU_VTENTRY: | |
5880 | /* We don't do anything with these at present. */ | |
5881 | return bfd_reloc_continue; | |
5882 | ||
5883 | default: | |
5884 | /* An unrecognized relocation type. */ | |
5885 | return bfd_reloc_notsupported; | |
5886 | } | |
5887 | ||
5888 | /* Store the VALUE for our caller. */ | |
5889 | *valuep = value; | |
5890 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
5891 | } | |
5892 | ||
5893 | /* Obtain the field relocated by RELOCATION. */ | |
5894 | ||
5895 | static bfd_vma | |
9719ad41 RS |
5896 | mips_elf_obtain_contents (reloc_howto_type *howto, |
5897 | const Elf_Internal_Rela *relocation, | |
5898 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
5899 | { |
5900 | bfd_vma x; | |
5901 | bfd_byte *location = contents + relocation->r_offset; | |
5902 | ||
5903 | /* Obtain the bytes. */ | |
5904 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
5905 | ||
b49e97c9 TS |
5906 | return x; |
5907 | } | |
5908 | ||
5909 | /* It has been determined that the result of the RELOCATION is the | |
5910 | VALUE. Use HOWTO to place VALUE into the output file at the | |
5911 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 5912 | relocation applies. |
38a7df63 | 5913 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 5914 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 5915 | |
b34976b6 | 5916 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 5917 | |
b34976b6 | 5918 | static bfd_boolean |
9719ad41 RS |
5919 | mips_elf_perform_relocation (struct bfd_link_info *info, |
5920 | reloc_howto_type *howto, | |
5921 | const Elf_Internal_Rela *relocation, | |
5922 | bfd_vma value, bfd *input_bfd, | |
5923 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 5924 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
5925 | { |
5926 | bfd_vma x; | |
5927 | bfd_byte *location; | |
5928 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5929 | ||
5930 | /* Figure out where the relocation is occurring. */ | |
5931 | location = contents + relocation->r_offset; | |
5932 | ||
df58fc94 | 5933 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
d6f16593 | 5934 | |
b49e97c9 TS |
5935 | /* Obtain the current value. */ |
5936 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5937 | ||
5938 | /* Clear the field we are setting. */ | |
5939 | x &= ~howto->dst_mask; | |
5940 | ||
b49e97c9 TS |
5941 | /* Set the field. */ |
5942 | x |= (value & howto->dst_mask); | |
5943 | ||
5944 | /* If required, turn JAL into JALX. */ | |
38a7df63 | 5945 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 5946 | { |
b34976b6 | 5947 | bfd_boolean ok; |
b49e97c9 TS |
5948 | bfd_vma opcode = x >> 26; |
5949 | bfd_vma jalx_opcode; | |
5950 | ||
5951 | /* Check to see if the opcode is already JAL or JALX. */ | |
5952 | if (r_type == R_MIPS16_26) | |
5953 | { | |
5954 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5955 | jalx_opcode = 0x7; | |
5956 | } | |
df58fc94 RS |
5957 | else if (r_type == R_MICROMIPS_26_S1) |
5958 | { | |
5959 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
5960 | jalx_opcode = 0x3c; | |
5961 | } | |
b49e97c9 TS |
5962 | else |
5963 | { | |
5964 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5965 | jalx_opcode = 0x1d; | |
5966 | } | |
5967 | ||
3bdf9505 MR |
5968 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
5969 | convert J or JALS to JALX. */ | |
b49e97c9 TS |
5970 | if (!ok) |
5971 | { | |
5972 | (*_bfd_error_handler) | |
3bdf9505 | 5973 | (_("%B: %A+0x%lx: Unsupported jump between ISA modes; consider recompiling with interlinking enabled."), |
d003868e AM |
5974 | input_bfd, |
5975 | input_section, | |
b49e97c9 TS |
5976 | (unsigned long) relocation->r_offset); |
5977 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5978 | return FALSE; |
b49e97c9 TS |
5979 | } |
5980 | ||
5981 | /* Make this the JALX opcode. */ | |
5982 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5983 | } | |
5984 | ||
38a7df63 CF |
5985 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
5986 | range. */ | |
cd8d5a82 | 5987 | if (!info->relocatable |
38a7df63 | 5988 | && !cross_mode_jump_p |
cd8d5a82 CF |
5989 | && ((JAL_TO_BAL_P (input_bfd) |
5990 | && r_type == R_MIPS_26 | |
5991 | && (x >> 26) == 0x3) /* jal addr */ | |
5992 | || (JALR_TO_BAL_P (input_bfd) | |
5993 | && r_type == R_MIPS_JALR | |
38a7df63 CF |
5994 | && x == 0x0320f809) /* jalr t9 */ |
5995 | || (JR_TO_B_P (input_bfd) | |
5996 | && r_type == R_MIPS_JALR | |
5997 | && x == 0x03200008))) /* jr t9 */ | |
1367d393 ILT |
5998 | { |
5999 | bfd_vma addr; | |
6000 | bfd_vma dest; | |
6001 | bfd_signed_vma off; | |
6002 | ||
6003 | addr = (input_section->output_section->vma | |
6004 | + input_section->output_offset | |
6005 | + relocation->r_offset | |
6006 | + 4); | |
6007 | if (r_type == R_MIPS_26) | |
6008 | dest = (value << 2) | ((addr >> 28) << 28); | |
6009 | else | |
6010 | dest = value; | |
6011 | off = dest - addr; | |
6012 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 CF |
6013 | { |
6014 | if (x == 0x03200008) /* jr t9 */ | |
6015 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ | |
6016 | else | |
6017 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
6018 | } | |
1367d393 ILT |
6019 | } |
6020 | ||
b49e97c9 TS |
6021 | /* Put the value into the output. */ |
6022 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 | 6023 | |
df58fc94 RS |
6024 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !info->relocatable, |
6025 | location); | |
d6f16593 | 6026 | |
b34976b6 | 6027 | return TRUE; |
b49e97c9 | 6028 | } |
b49e97c9 | 6029 | \f |
b49e97c9 TS |
6030 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6031 | is the original relocation, which is now being transformed into a | |
6032 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
6033 | caller should store the result in place of the original addend. */ | |
6034 | ||
b34976b6 | 6035 | static bfd_boolean |
9719ad41 RS |
6036 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
6037 | struct bfd_link_info *info, | |
6038 | const Elf_Internal_Rela *rel, | |
6039 | struct mips_elf_link_hash_entry *h, | |
6040 | asection *sec, bfd_vma symbol, | |
6041 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 6042 | { |
947216bf | 6043 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
6044 | asection *sreloc; |
6045 | bfd *dynobj; | |
6046 | int r_type; | |
5d41f0b6 RS |
6047 | long indx; |
6048 | bfd_boolean defined_p; | |
0a44bf69 | 6049 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6050 | |
0a44bf69 | 6051 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6052 | BFD_ASSERT (htab != NULL); |
6053 | ||
b49e97c9 TS |
6054 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
6055 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 6056 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
6057 | BFD_ASSERT (sreloc != NULL); |
6058 | BFD_ASSERT (sreloc->contents != NULL); | |
6059 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 6060 | < sreloc->size); |
b49e97c9 | 6061 | |
b49e97c9 TS |
6062 | outrel[0].r_offset = |
6063 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
6064 | if (ABI_64_P (output_bfd)) |
6065 | { | |
6066 | outrel[1].r_offset = | |
6067 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6068 | outrel[2].r_offset = | |
6069 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6070 | } | |
b49e97c9 | 6071 | |
c5ae1840 | 6072 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6073 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
6074 | return TRUE; |
6075 | ||
6076 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6077 | { |
6078 | /* The relocation field has been converted into a relative value of | |
6079 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6080 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6081 | *addendp += symbol; |
5d41f0b6 | 6082 | return TRUE; |
0d591ff7 | 6083 | } |
b49e97c9 | 6084 | |
5d41f0b6 RS |
6085 | /* We must now calculate the dynamic symbol table index to use |
6086 | in the relocation. */ | |
d4a77f3f | 6087 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6088 | { |
020d7251 | 6089 | BFD_ASSERT (htab->is_vxworks || h->global_got_area != GGA_NONE); |
5d41f0b6 RS |
6090 | indx = h->root.dynindx; |
6091 | if (SGI_COMPAT (output_bfd)) | |
6092 | defined_p = h->root.def_regular; | |
6093 | else | |
6094 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6095 | relocation field. It therefore treats relocs against | |
6096 | defined symbols in the same way as relocs against | |
6097 | undefined symbols. */ | |
6098 | defined_p = FALSE; | |
6099 | } | |
b49e97c9 TS |
6100 | else |
6101 | { | |
5d41f0b6 RS |
6102 | if (sec != NULL && bfd_is_abs_section (sec)) |
6103 | indx = 0; | |
6104 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6105 | { |
5d41f0b6 RS |
6106 | bfd_set_error (bfd_error_bad_value); |
6107 | return FALSE; | |
b49e97c9 TS |
6108 | } |
6109 | else | |
6110 | { | |
5d41f0b6 | 6111 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6112 | if (indx == 0) |
6113 | { | |
6114 | asection *osec = htab->root.text_index_section; | |
6115 | indx = elf_section_data (osec)->dynindx; | |
6116 | } | |
5d41f0b6 RS |
6117 | if (indx == 0) |
6118 | abort (); | |
b49e97c9 TS |
6119 | } |
6120 | ||
5d41f0b6 RS |
6121 | /* Instead of generating a relocation using the section |
6122 | symbol, we may as well make it a fully relative | |
6123 | relocation. We want to avoid generating relocations to | |
6124 | local symbols because we used to generate them | |
6125 | incorrectly, without adding the original symbol value, | |
6126 | which is mandated by the ABI for section symbols. In | |
6127 | order to give dynamic loaders and applications time to | |
6128 | phase out the incorrect use, we refrain from emitting | |
6129 | section-relative relocations. It's not like they're | |
6130 | useful, after all. This should be a bit more efficient | |
6131 | as well. */ | |
6132 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6133 | the ABI says that relocations against STN_UNDEF should have | |
6134 | a symbol value of 0. Irix rld honors this, so relocations | |
6135 | against STN_UNDEF have no effect. */ | |
6136 | if (!SGI_COMPAT (output_bfd)) | |
6137 | indx = 0; | |
6138 | defined_p = TRUE; | |
b49e97c9 TS |
6139 | } |
6140 | ||
5d41f0b6 RS |
6141 | /* If the relocation was previously an absolute relocation and |
6142 | this symbol will not be referred to by the relocation, we must | |
6143 | adjust it by the value we give it in the dynamic symbol table. | |
6144 | Otherwise leave the job up to the dynamic linker. */ | |
6145 | if (defined_p && r_type != R_MIPS_REL32) | |
6146 | *addendp += symbol; | |
6147 | ||
0a44bf69 RS |
6148 | if (htab->is_vxworks) |
6149 | /* VxWorks uses non-relative relocations for this. */ | |
6150 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6151 | else | |
6152 | /* The relocation is always an REL32 relocation because we don't | |
6153 | know where the shared library will wind up at load-time. */ | |
6154 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6155 | R_MIPS_REL32); | |
6156 | ||
5d41f0b6 RS |
6157 | /* For strict adherence to the ABI specification, we should |
6158 | generate a R_MIPS_64 relocation record by itself before the | |
6159 | _REL32/_64 record as well, such that the addend is read in as | |
6160 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6161 | However, since none of the existing ELF64 MIPS dynamic | |
6162 | loaders seems to care, we don't waste space with these | |
6163 | artificial relocations. If this turns out to not be true, | |
6164 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6165 | as to make room for a pair of dynamic relocations per | |
6166 | invocation if ABI_64_P, and here we should generate an | |
6167 | additional relocation record with R_MIPS_64 by itself for a | |
6168 | NULL symbol before this relocation record. */ | |
6169 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6170 | ABI_64_P (output_bfd) | |
6171 | ? R_MIPS_64 | |
6172 | : R_MIPS_NONE); | |
6173 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6174 | ||
6175 | /* Adjust the output offset of the relocation to reference the | |
6176 | correct location in the output file. */ | |
6177 | outrel[0].r_offset += (input_section->output_section->vma | |
6178 | + input_section->output_offset); | |
6179 | outrel[1].r_offset += (input_section->output_section->vma | |
6180 | + input_section->output_offset); | |
6181 | outrel[2].r_offset += (input_section->output_section->vma | |
6182 | + input_section->output_offset); | |
6183 | ||
b49e97c9 TS |
6184 | /* Put the relocation back out. We have to use the special |
6185 | relocation outputter in the 64-bit case since the 64-bit | |
6186 | relocation format is non-standard. */ | |
6187 | if (ABI_64_P (output_bfd)) | |
6188 | { | |
6189 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6190 | (output_bfd, &outrel[0], | |
6191 | (sreloc->contents | |
6192 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6193 | } | |
0a44bf69 RS |
6194 | else if (htab->is_vxworks) |
6195 | { | |
6196 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6197 | outrel[0].r_addend = *addendp; | |
6198 | bfd_elf32_swap_reloca_out | |
6199 | (output_bfd, &outrel[0], | |
6200 | (sreloc->contents | |
6201 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6202 | } | |
b49e97c9 | 6203 | else |
947216bf AM |
6204 | bfd_elf32_swap_reloc_out |
6205 | (output_bfd, &outrel[0], | |
6206 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6207 | |
b49e97c9 TS |
6208 | /* We've now added another relocation. */ |
6209 | ++sreloc->reloc_count; | |
6210 | ||
6211 | /* Make sure the output section is writable. The dynamic linker | |
6212 | will be writing to it. */ | |
6213 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6214 | |= SHF_WRITE; | |
6215 | ||
6216 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6217 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6218 | { |
3d4d4302 | 6219 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6220 | bfd_byte *cr; |
6221 | ||
6222 | if (scpt) | |
6223 | { | |
6224 | Elf32_crinfo cptrel; | |
6225 | ||
6226 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6227 | cptrel.vaddr = (rel->r_offset | |
6228 | + input_section->output_section->vma | |
6229 | + input_section->output_offset); | |
6230 | if (r_type == R_MIPS_REL32) | |
6231 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6232 | else | |
6233 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6234 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6235 | cptrel.konst = *addendp; | |
6236 | ||
6237 | cr = (scpt->contents | |
6238 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6239 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6240 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6241 | ((Elf32_External_crinfo *) cr | |
6242 | + scpt->reloc_count)); | |
6243 | ++scpt->reloc_count; | |
6244 | } | |
6245 | } | |
6246 | ||
943284cc DJ |
6247 | /* If we've written this relocation for a readonly section, |
6248 | we need to set DF_TEXTREL again, so that we do not delete the | |
6249 | DT_TEXTREL tag. */ | |
6250 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6251 | info->flags |= DF_TEXTREL; | |
6252 | ||
b34976b6 | 6253 | return TRUE; |
b49e97c9 TS |
6254 | } |
6255 | \f | |
b49e97c9 TS |
6256 | /* Return the MACH for a MIPS e_flags value. */ |
6257 | ||
6258 | unsigned long | |
9719ad41 | 6259 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6260 | { |
6261 | switch (flags & EF_MIPS_MACH) | |
6262 | { | |
6263 | case E_MIPS_MACH_3900: | |
6264 | return bfd_mach_mips3900; | |
6265 | ||
6266 | case E_MIPS_MACH_4010: | |
6267 | return bfd_mach_mips4010; | |
6268 | ||
6269 | case E_MIPS_MACH_4100: | |
6270 | return bfd_mach_mips4100; | |
6271 | ||
6272 | case E_MIPS_MACH_4111: | |
6273 | return bfd_mach_mips4111; | |
6274 | ||
00707a0e RS |
6275 | case E_MIPS_MACH_4120: |
6276 | return bfd_mach_mips4120; | |
6277 | ||
b49e97c9 TS |
6278 | case E_MIPS_MACH_4650: |
6279 | return bfd_mach_mips4650; | |
6280 | ||
00707a0e RS |
6281 | case E_MIPS_MACH_5400: |
6282 | return bfd_mach_mips5400; | |
6283 | ||
6284 | case E_MIPS_MACH_5500: | |
6285 | return bfd_mach_mips5500; | |
6286 | ||
e407c74b NC |
6287 | case E_MIPS_MACH_5900: |
6288 | return bfd_mach_mips5900; | |
6289 | ||
0d2e43ed ILT |
6290 | case E_MIPS_MACH_9000: |
6291 | return bfd_mach_mips9000; | |
6292 | ||
b49e97c9 TS |
6293 | case E_MIPS_MACH_SB1: |
6294 | return bfd_mach_mips_sb1; | |
6295 | ||
350cc38d MS |
6296 | case E_MIPS_MACH_LS2E: |
6297 | return bfd_mach_mips_loongson_2e; | |
6298 | ||
6299 | case E_MIPS_MACH_LS2F: | |
6300 | return bfd_mach_mips_loongson_2f; | |
6301 | ||
fd503541 NC |
6302 | case E_MIPS_MACH_LS3A: |
6303 | return bfd_mach_mips_loongson_3a; | |
6304 | ||
432233b3 AP |
6305 | case E_MIPS_MACH_OCTEON2: |
6306 | return bfd_mach_mips_octeon2; | |
6307 | ||
6f179bd0 AN |
6308 | case E_MIPS_MACH_OCTEON: |
6309 | return bfd_mach_mips_octeon; | |
6310 | ||
52b6b6b9 JM |
6311 | case E_MIPS_MACH_XLR: |
6312 | return bfd_mach_mips_xlr; | |
6313 | ||
b49e97c9 TS |
6314 | default: |
6315 | switch (flags & EF_MIPS_ARCH) | |
6316 | { | |
6317 | default: | |
6318 | case E_MIPS_ARCH_1: | |
6319 | return bfd_mach_mips3000; | |
b49e97c9 TS |
6320 | |
6321 | case E_MIPS_ARCH_2: | |
6322 | return bfd_mach_mips6000; | |
b49e97c9 TS |
6323 | |
6324 | case E_MIPS_ARCH_3: | |
6325 | return bfd_mach_mips4000; | |
b49e97c9 TS |
6326 | |
6327 | case E_MIPS_ARCH_4: | |
6328 | return bfd_mach_mips8000; | |
b49e97c9 TS |
6329 | |
6330 | case E_MIPS_ARCH_5: | |
6331 | return bfd_mach_mips5; | |
b49e97c9 TS |
6332 | |
6333 | case E_MIPS_ARCH_32: | |
6334 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
6335 | |
6336 | case E_MIPS_ARCH_64: | |
6337 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6338 | |
6339 | case E_MIPS_ARCH_32R2: | |
6340 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6341 | |
6342 | case E_MIPS_ARCH_64R2: | |
6343 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
6344 | } |
6345 | } | |
6346 | ||
6347 | return 0; | |
6348 | } | |
6349 | ||
6350 | /* Return printable name for ABI. */ | |
6351 | ||
6352 | static INLINE char * | |
9719ad41 | 6353 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6354 | { |
6355 | flagword flags; | |
6356 | ||
6357 | flags = elf_elfheader (abfd)->e_flags; | |
6358 | switch (flags & EF_MIPS_ABI) | |
6359 | { | |
6360 | case 0: | |
6361 | if (ABI_N32_P (abfd)) | |
6362 | return "N32"; | |
6363 | else if (ABI_64_P (abfd)) | |
6364 | return "64"; | |
6365 | else | |
6366 | return "none"; | |
6367 | case E_MIPS_ABI_O32: | |
6368 | return "O32"; | |
6369 | case E_MIPS_ABI_O64: | |
6370 | return "O64"; | |
6371 | case E_MIPS_ABI_EABI32: | |
6372 | return "EABI32"; | |
6373 | case E_MIPS_ABI_EABI64: | |
6374 | return "EABI64"; | |
6375 | default: | |
6376 | return "unknown abi"; | |
6377 | } | |
6378 | } | |
6379 | \f | |
6380 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6381 | other is for small objects. All the small objects are kept | |
6382 | together, and then referenced via the gp pointer, which yields | |
6383 | faster assembler code. This is what we use for the small common | |
6384 | section. This approach is copied from ecoff.c. */ | |
6385 | static asection mips_elf_scom_section; | |
6386 | static asymbol mips_elf_scom_symbol; | |
6387 | static asymbol *mips_elf_scom_symbol_ptr; | |
6388 | ||
6389 | /* MIPS ELF also uses an acommon section, which represents an | |
6390 | allocated common symbol which may be overridden by a | |
6391 | definition in a shared library. */ | |
6392 | static asection mips_elf_acom_section; | |
6393 | static asymbol mips_elf_acom_symbol; | |
6394 | static asymbol *mips_elf_acom_symbol_ptr; | |
6395 | ||
738e5348 | 6396 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
6397 | |
6398 | void | |
9719ad41 | 6399 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
6400 | { |
6401 | elf_symbol_type *elfsym; | |
6402 | ||
738e5348 | 6403 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
6404 | elfsym = (elf_symbol_type *) asym; |
6405 | switch (elfsym->internal_elf_sym.st_shndx) | |
6406 | { | |
6407 | case SHN_MIPS_ACOMMON: | |
6408 | /* This section is used in a dynamically linked executable file. | |
6409 | It is an allocated common section. The dynamic linker can | |
6410 | either resolve these symbols to something in a shared | |
6411 | library, or it can just leave them here. For our purposes, | |
6412 | we can consider these symbols to be in a new section. */ | |
6413 | if (mips_elf_acom_section.name == NULL) | |
6414 | { | |
6415 | /* Initialize the acommon section. */ | |
6416 | mips_elf_acom_section.name = ".acommon"; | |
6417 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6418 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6419 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6420 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6421 | mips_elf_acom_symbol.name = ".acommon"; | |
6422 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6423 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6424 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6425 | } | |
6426 | asym->section = &mips_elf_acom_section; | |
6427 | break; | |
6428 | ||
6429 | case SHN_COMMON: | |
6430 | /* Common symbols less than the GP size are automatically | |
6431 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6432 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6433 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6434 | || IRIX_COMPAT (abfd) == ict_irix6) |
6435 | break; | |
6436 | /* Fall through. */ | |
6437 | case SHN_MIPS_SCOMMON: | |
6438 | if (mips_elf_scom_section.name == NULL) | |
6439 | { | |
6440 | /* Initialize the small common section. */ | |
6441 | mips_elf_scom_section.name = ".scommon"; | |
6442 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6443 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6444 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6445 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6446 | mips_elf_scom_symbol.name = ".scommon"; | |
6447 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6448 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6449 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6450 | } | |
6451 | asym->section = &mips_elf_scom_section; | |
6452 | asym->value = elfsym->internal_elf_sym.st_size; | |
6453 | break; | |
6454 | ||
6455 | case SHN_MIPS_SUNDEFINED: | |
6456 | asym->section = bfd_und_section_ptr; | |
6457 | break; | |
6458 | ||
b49e97c9 | 6459 | case SHN_MIPS_TEXT: |
00b4930b TS |
6460 | { |
6461 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6462 | ||
00b4930b TS |
6463 | if (section != NULL) |
6464 | { | |
6465 | asym->section = section; | |
6466 | /* MIPS_TEXT is a bit special, the address is not an offset | |
6467 | to the base of the .text section. So substract the section | |
6468 | base address to make it an offset. */ | |
6469 | asym->value -= section->vma; | |
6470 | } | |
6471 | } | |
b49e97c9 TS |
6472 | break; |
6473 | ||
6474 | case SHN_MIPS_DATA: | |
00b4930b TS |
6475 | { |
6476 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6477 | ||
00b4930b TS |
6478 | if (section != NULL) |
6479 | { | |
6480 | asym->section = section; | |
6481 | /* MIPS_DATA is a bit special, the address is not an offset | |
6482 | to the base of the .data section. So substract the section | |
6483 | base address to make it an offset. */ | |
6484 | asym->value -= section->vma; | |
6485 | } | |
6486 | } | |
b49e97c9 | 6487 | break; |
b49e97c9 | 6488 | } |
738e5348 | 6489 | |
df58fc94 RS |
6490 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
6491 | or microMIPS one. */ | |
738e5348 RS |
6492 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
6493 | && (asym->value & 1) != 0) | |
6494 | { | |
6495 | asym->value--; | |
df58fc94 RS |
6496 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
6497 | elfsym->internal_elf_sym.st_other | |
6498 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
6499 | else | |
6500 | elfsym->internal_elf_sym.st_other | |
6501 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 6502 | } |
b49e97c9 TS |
6503 | } |
6504 | \f | |
8c946ed5 RS |
6505 | /* Implement elf_backend_eh_frame_address_size. This differs from |
6506 | the default in the way it handles EABI64. | |
6507 | ||
6508 | EABI64 was originally specified as an LP64 ABI, and that is what | |
6509 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
6510 | historically accepted the combination of -mabi=eabi and -mlong32, | |
6511 | and this ILP32 variation has become semi-official over time. | |
6512 | Both forms use elf32 and have pointer-sized FDE addresses. | |
6513 | ||
6514 | If an EABI object was generated by GCC 4.0 or above, it will have | |
6515 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
6516 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
6517 | have no special marking to distinguish them from LP64 objects. | |
6518 | ||
6519 | We don't want users of the official LP64 ABI to be punished for the | |
6520 | existence of the ILP32 variant, but at the same time, we don't want | |
6521 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
6522 | We therefore take the following approach: | |
6523 | ||
6524 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
6525 | determine the pointer size. | |
6526 | ||
6527 | - Otherwise check the type of the first relocation. Assume that | |
6528 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
6529 | ||
6530 | - Otherwise punt. | |
6531 | ||
6532 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
6533 | compilers because, in the kind of output generated by those compilers, | |
6534 | the first relocation will be associated with either a CIE personality | |
6535 | routine or an FDE start address. Furthermore, the compilers never | |
6536 | used a special (non-pointer) encoding for this ABI. | |
6537 | ||
6538 | Checking the relocation type should also be safe because there is no | |
6539 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
6540 | did so. */ | |
6541 | ||
6542 | unsigned int | |
6543 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
6544 | { | |
6545 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
6546 | return 8; | |
6547 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
6548 | { | |
6549 | bfd_boolean long32_p, long64_p; | |
6550 | ||
6551 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
6552 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
6553 | if (long32_p && long64_p) | |
6554 | return 0; | |
6555 | if (long32_p) | |
6556 | return 4; | |
6557 | if (long64_p) | |
6558 | return 8; | |
6559 | ||
6560 | if (sec->reloc_count > 0 | |
6561 | && elf_section_data (sec)->relocs != NULL | |
6562 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
6563 | == R_MIPS_64)) | |
6564 | return 8; | |
6565 | ||
6566 | return 0; | |
6567 | } | |
6568 | return 4; | |
6569 | } | |
6570 | \f | |
174fd7f9 RS |
6571 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
6572 | relocations against two unnamed section symbols to resolve to the | |
6573 | same address. For example, if we have code like: | |
6574 | ||
6575 | lw $4,%got_disp(.data)($gp) | |
6576 | lw $25,%got_disp(.text)($gp) | |
6577 | jalr $25 | |
6578 | ||
6579 | then the linker will resolve both relocations to .data and the program | |
6580 | will jump there rather than to .text. | |
6581 | ||
6582 | We can work around this problem by giving names to local section symbols. | |
6583 | This is also what the MIPSpro tools do. */ | |
6584 | ||
6585 | bfd_boolean | |
6586 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
6587 | { | |
6588 | return SGI_COMPAT (abfd); | |
6589 | } | |
6590 | \f | |
b49e97c9 TS |
6591 | /* Work over a section just before writing it out. This routine is |
6592 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
6593 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
6594 | a better way. */ | |
6595 | ||
b34976b6 | 6596 | bfd_boolean |
9719ad41 | 6597 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
6598 | { |
6599 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
6600 | && hdr->sh_size > 0) | |
6601 | { | |
6602 | bfd_byte buf[4]; | |
6603 | ||
6604 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
6605 | BFD_ASSERT (hdr->contents == NULL); | |
6606 | ||
6607 | if (bfd_seek (abfd, | |
6608 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
6609 | SEEK_SET) != 0) | |
b34976b6 | 6610 | return FALSE; |
b49e97c9 | 6611 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6612 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6613 | return FALSE; |
b49e97c9 TS |
6614 | } |
6615 | ||
6616 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
6617 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
6618 | && mips_elf_section_data (hdr->bfd_section) != NULL |
6619 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
6620 | { |
6621 | bfd_byte *contents, *l, *lend; | |
6622 | ||
f0abc2a1 AM |
6623 | /* We stored the section contents in the tdata field in the |
6624 | set_section_contents routine. We save the section contents | |
6625 | so that we don't have to read them again. | |
b49e97c9 TS |
6626 | At this point we know that elf_gp is set, so we can look |
6627 | through the section contents to see if there is an | |
6628 | ODK_REGINFO structure. */ | |
6629 | ||
f0abc2a1 | 6630 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
6631 | l = contents; |
6632 | lend = contents + hdr->sh_size; | |
6633 | while (l + sizeof (Elf_External_Options) <= lend) | |
6634 | { | |
6635 | Elf_Internal_Options intopt; | |
6636 | ||
6637 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6638 | &intopt); | |
1bc8074d MR |
6639 | if (intopt.size < sizeof (Elf_External_Options)) |
6640 | { | |
6641 | (*_bfd_error_handler) | |
6642 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6643 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6644 | break; | |
6645 | } | |
b49e97c9 TS |
6646 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6647 | { | |
6648 | bfd_byte buf[8]; | |
6649 | ||
6650 | if (bfd_seek (abfd, | |
6651 | (hdr->sh_offset | |
6652 | + (l - contents) | |
6653 | + sizeof (Elf_External_Options) | |
6654 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
6655 | SEEK_SET) != 0) | |
b34976b6 | 6656 | return FALSE; |
b49e97c9 | 6657 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6658 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 6659 | return FALSE; |
b49e97c9 TS |
6660 | } |
6661 | else if (intopt.kind == ODK_REGINFO) | |
6662 | { | |
6663 | bfd_byte buf[4]; | |
6664 | ||
6665 | if (bfd_seek (abfd, | |
6666 | (hdr->sh_offset | |
6667 | + (l - contents) | |
6668 | + sizeof (Elf_External_Options) | |
6669 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
6670 | SEEK_SET) != 0) | |
b34976b6 | 6671 | return FALSE; |
b49e97c9 | 6672 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6673 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6674 | return FALSE; |
b49e97c9 TS |
6675 | } |
6676 | l += intopt.size; | |
6677 | } | |
6678 | } | |
6679 | ||
6680 | if (hdr->bfd_section != NULL) | |
6681 | { | |
6682 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
6683 | ||
2d0f9ad9 JM |
6684 | /* .sbss is not handled specially here because the GNU/Linux |
6685 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
6686 | changing it back to NOBITS breaks the binary. The entry in | |
6687 | _bfd_mips_elf_special_sections will ensure the correct flags | |
6688 | are set on .sbss if BFD creates it without reading it from an | |
6689 | input file, and without special handling here the flags set | |
6690 | on it in an input file will be followed. */ | |
b49e97c9 TS |
6691 | if (strcmp (name, ".sdata") == 0 |
6692 | || strcmp (name, ".lit8") == 0 | |
6693 | || strcmp (name, ".lit4") == 0) | |
6694 | { | |
6695 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
6696 | hdr->sh_type = SHT_PROGBITS; | |
6697 | } | |
b49e97c9 TS |
6698 | else if (strcmp (name, ".srdata") == 0) |
6699 | { | |
6700 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
6701 | hdr->sh_type = SHT_PROGBITS; | |
6702 | } | |
6703 | else if (strcmp (name, ".compact_rel") == 0) | |
6704 | { | |
6705 | hdr->sh_flags = 0; | |
6706 | hdr->sh_type = SHT_PROGBITS; | |
6707 | } | |
6708 | else if (strcmp (name, ".rtproc") == 0) | |
6709 | { | |
6710 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
6711 | { | |
6712 | unsigned int adjust; | |
6713 | ||
6714 | adjust = hdr->sh_size % hdr->sh_addralign; | |
6715 | if (adjust != 0) | |
6716 | hdr->sh_size += hdr->sh_addralign - adjust; | |
6717 | } | |
6718 | } | |
6719 | } | |
6720 | ||
b34976b6 | 6721 | return TRUE; |
b49e97c9 TS |
6722 | } |
6723 | ||
6724 | /* Handle a MIPS specific section when reading an object file. This | |
6725 | is called when elfcode.h finds a section with an unknown type. | |
6726 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
6727 | ||
6728 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
6729 | how to. */ | |
6730 | ||
b34976b6 | 6731 | bfd_boolean |
6dc132d9 L |
6732 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
6733 | Elf_Internal_Shdr *hdr, | |
6734 | const char *name, | |
6735 | int shindex) | |
b49e97c9 TS |
6736 | { |
6737 | flagword flags = 0; | |
6738 | ||
6739 | /* There ought to be a place to keep ELF backend specific flags, but | |
6740 | at the moment there isn't one. We just keep track of the | |
6741 | sections by their name, instead. Fortunately, the ABI gives | |
6742 | suggested names for all the MIPS specific sections, so we will | |
6743 | probably get away with this. */ | |
6744 | switch (hdr->sh_type) | |
6745 | { | |
6746 | case SHT_MIPS_LIBLIST: | |
6747 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 6748 | return FALSE; |
b49e97c9 TS |
6749 | break; |
6750 | case SHT_MIPS_MSYM: | |
6751 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 6752 | return FALSE; |
b49e97c9 TS |
6753 | break; |
6754 | case SHT_MIPS_CONFLICT: | |
6755 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 6756 | return FALSE; |
b49e97c9 TS |
6757 | break; |
6758 | case SHT_MIPS_GPTAB: | |
0112cd26 | 6759 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 6760 | return FALSE; |
b49e97c9 TS |
6761 | break; |
6762 | case SHT_MIPS_UCODE: | |
6763 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 6764 | return FALSE; |
b49e97c9 TS |
6765 | break; |
6766 | case SHT_MIPS_DEBUG: | |
6767 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 6768 | return FALSE; |
b49e97c9 TS |
6769 | flags = SEC_DEBUGGING; |
6770 | break; | |
6771 | case SHT_MIPS_REGINFO: | |
6772 | if (strcmp (name, ".reginfo") != 0 | |
6773 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 6774 | return FALSE; |
b49e97c9 TS |
6775 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
6776 | break; | |
6777 | case SHT_MIPS_IFACE: | |
6778 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 6779 | return FALSE; |
b49e97c9 TS |
6780 | break; |
6781 | case SHT_MIPS_CONTENT: | |
0112cd26 | 6782 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 6783 | return FALSE; |
b49e97c9 TS |
6784 | break; |
6785 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 6786 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 6787 | return FALSE; |
b49e97c9 TS |
6788 | break; |
6789 | case SHT_MIPS_DWARF: | |
1b315056 | 6790 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 6791 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 6792 | return FALSE; |
b49e97c9 TS |
6793 | break; |
6794 | case SHT_MIPS_SYMBOL_LIB: | |
6795 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 6796 | return FALSE; |
b49e97c9 TS |
6797 | break; |
6798 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
6799 | if (! CONST_STRNEQ (name, ".MIPS.events") |
6800 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 6801 | return FALSE; |
b49e97c9 TS |
6802 | break; |
6803 | default: | |
cc2e31b9 | 6804 | break; |
b49e97c9 TS |
6805 | } |
6806 | ||
6dc132d9 | 6807 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 6808 | return FALSE; |
b49e97c9 TS |
6809 | |
6810 | if (flags) | |
6811 | { | |
6812 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
6813 | (bfd_get_section_flags (abfd, | |
6814 | hdr->bfd_section) | |
6815 | | flags))) | |
b34976b6 | 6816 | return FALSE; |
b49e97c9 TS |
6817 | } |
6818 | ||
6819 | /* FIXME: We should record sh_info for a .gptab section. */ | |
6820 | ||
6821 | /* For a .reginfo section, set the gp value in the tdata information | |
6822 | from the contents of this section. We need the gp value while | |
6823 | processing relocs, so we just get it now. The .reginfo section | |
6824 | is not used in the 64-bit MIPS ELF ABI. */ | |
6825 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
6826 | { | |
6827 | Elf32_External_RegInfo ext; | |
6828 | Elf32_RegInfo s; | |
6829 | ||
9719ad41 RS |
6830 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
6831 | &ext, 0, sizeof ext)) | |
b34976b6 | 6832 | return FALSE; |
b49e97c9 TS |
6833 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
6834 | elf_gp (abfd) = s.ri_gp_value; | |
6835 | } | |
6836 | ||
6837 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
6838 | set the gp value based on what we find. We may see both | |
6839 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
6840 | they should agree. */ | |
6841 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
6842 | { | |
6843 | bfd_byte *contents, *l, *lend; | |
6844 | ||
9719ad41 | 6845 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 6846 | if (contents == NULL) |
b34976b6 | 6847 | return FALSE; |
b49e97c9 | 6848 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 6849 | 0, hdr->sh_size)) |
b49e97c9 TS |
6850 | { |
6851 | free (contents); | |
b34976b6 | 6852 | return FALSE; |
b49e97c9 TS |
6853 | } |
6854 | l = contents; | |
6855 | lend = contents + hdr->sh_size; | |
6856 | while (l + sizeof (Elf_External_Options) <= lend) | |
6857 | { | |
6858 | Elf_Internal_Options intopt; | |
6859 | ||
6860 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6861 | &intopt); | |
1bc8074d MR |
6862 | if (intopt.size < sizeof (Elf_External_Options)) |
6863 | { | |
6864 | (*_bfd_error_handler) | |
6865 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6866 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6867 | break; | |
6868 | } | |
b49e97c9 TS |
6869 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6870 | { | |
6871 | Elf64_Internal_RegInfo intreg; | |
6872 | ||
6873 | bfd_mips_elf64_swap_reginfo_in | |
6874 | (abfd, | |
6875 | ((Elf64_External_RegInfo *) | |
6876 | (l + sizeof (Elf_External_Options))), | |
6877 | &intreg); | |
6878 | elf_gp (abfd) = intreg.ri_gp_value; | |
6879 | } | |
6880 | else if (intopt.kind == ODK_REGINFO) | |
6881 | { | |
6882 | Elf32_RegInfo intreg; | |
6883 | ||
6884 | bfd_mips_elf32_swap_reginfo_in | |
6885 | (abfd, | |
6886 | ((Elf32_External_RegInfo *) | |
6887 | (l + sizeof (Elf_External_Options))), | |
6888 | &intreg); | |
6889 | elf_gp (abfd) = intreg.ri_gp_value; | |
6890 | } | |
6891 | l += intopt.size; | |
6892 | } | |
6893 | free (contents); | |
6894 | } | |
6895 | ||
b34976b6 | 6896 | return TRUE; |
b49e97c9 TS |
6897 | } |
6898 | ||
6899 | /* Set the correct type for a MIPS ELF section. We do this by the | |
6900 | section name, which is a hack, but ought to work. This routine is | |
6901 | used by both the 32-bit and the 64-bit ABI. */ | |
6902 | ||
b34976b6 | 6903 | bfd_boolean |
9719ad41 | 6904 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 6905 | { |
0414f35b | 6906 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
6907 | |
6908 | if (strcmp (name, ".liblist") == 0) | |
6909 | { | |
6910 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 6911 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
6912 | /* The sh_link field is set in final_write_processing. */ |
6913 | } | |
6914 | else if (strcmp (name, ".conflict") == 0) | |
6915 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 6916 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
6917 | { |
6918 | hdr->sh_type = SHT_MIPS_GPTAB; | |
6919 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
6920 | /* The sh_info field is set in final_write_processing. */ | |
6921 | } | |
6922 | else if (strcmp (name, ".ucode") == 0) | |
6923 | hdr->sh_type = SHT_MIPS_UCODE; | |
6924 | else if (strcmp (name, ".mdebug") == 0) | |
6925 | { | |
6926 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 6927 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
6928 | entsize of 0. FIXME: Does this matter? */ |
6929 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
6930 | hdr->sh_entsize = 0; | |
6931 | else | |
6932 | hdr->sh_entsize = 1; | |
6933 | } | |
6934 | else if (strcmp (name, ".reginfo") == 0) | |
6935 | { | |
6936 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 6937 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
6938 | entsize of 0x18. FIXME: Does this matter? */ |
6939 | if (SGI_COMPAT (abfd)) | |
6940 | { | |
6941 | if ((abfd->flags & DYNAMIC) != 0) | |
6942 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6943 | else | |
6944 | hdr->sh_entsize = 1; | |
6945 | } | |
6946 | else | |
6947 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6948 | } | |
6949 | else if (SGI_COMPAT (abfd) | |
6950 | && (strcmp (name, ".hash") == 0 | |
6951 | || strcmp (name, ".dynamic") == 0 | |
6952 | || strcmp (name, ".dynstr") == 0)) | |
6953 | { | |
6954 | if (SGI_COMPAT (abfd)) | |
6955 | hdr->sh_entsize = 0; | |
6956 | #if 0 | |
8dc1a139 | 6957 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6958 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6959 | #endif | |
6960 | } | |
6961 | else if (strcmp (name, ".got") == 0 | |
6962 | || strcmp (name, ".srdata") == 0 | |
6963 | || strcmp (name, ".sdata") == 0 | |
6964 | || strcmp (name, ".sbss") == 0 | |
6965 | || strcmp (name, ".lit4") == 0 | |
6966 | || strcmp (name, ".lit8") == 0) | |
6967 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6968 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6969 | { | |
6970 | hdr->sh_type = SHT_MIPS_IFACE; | |
6971 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6972 | } | |
0112cd26 | 6973 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6974 | { |
6975 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6976 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6977 | /* The sh_info field is set in final_write_processing. */ | |
6978 | } | |
cc2e31b9 | 6979 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6980 | { |
6981 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6982 | hdr->sh_entsize = 1; | |
6983 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6984 | } | |
1b315056 CS |
6985 | else if (CONST_STRNEQ (name, ".debug_") |
6986 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6987 | { |
6988 | hdr->sh_type = SHT_MIPS_DWARF; | |
6989 | ||
6990 | /* Irix facilities such as libexc expect a single .debug_frame | |
6991 | per executable, the system ones have NOSTRIP set and the linker | |
6992 | doesn't merge sections with different flags so ... */ | |
6993 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
6994 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6995 | } | |
b49e97c9 TS |
6996 | else if (strcmp (name, ".MIPS.symlib") == 0) |
6997 | { | |
6998 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
6999 | /* The sh_link and sh_info fields are set in | |
7000 | final_write_processing. */ | |
7001 | } | |
0112cd26 NC |
7002 | else if (CONST_STRNEQ (name, ".MIPS.events") |
7003 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
7004 | { |
7005 | hdr->sh_type = SHT_MIPS_EVENTS; | |
7006 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7007 | /* The sh_link field is set in final_write_processing. */ | |
7008 | } | |
7009 | else if (strcmp (name, ".msym") == 0) | |
7010 | { | |
7011 | hdr->sh_type = SHT_MIPS_MSYM; | |
7012 | hdr->sh_flags |= SHF_ALLOC; | |
7013 | hdr->sh_entsize = 8; | |
7014 | } | |
7015 | ||
7a79a000 TS |
7016 | /* The generic elf_fake_sections will set up REL_HDR using the default |
7017 | kind of relocations. We used to set up a second header for the | |
7018 | non-default kind of relocations here, but only NewABI would use | |
7019 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
7020 | Thus we create those header only on demand now. */ | |
b49e97c9 | 7021 | |
b34976b6 | 7022 | return TRUE; |
b49e97c9 TS |
7023 | } |
7024 | ||
7025 | /* Given a BFD section, try to locate the corresponding ELF section | |
7026 | index. This is used by both the 32-bit and the 64-bit ABI. | |
7027 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
7028 | but for non-PIC objects we will certainly want support for at least | |
7029 | the .scommon section. */ | |
7030 | ||
b34976b6 | 7031 | bfd_boolean |
9719ad41 RS |
7032 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
7033 | asection *sec, int *retval) | |
b49e97c9 TS |
7034 | { |
7035 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
7036 | { | |
7037 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 7038 | return TRUE; |
b49e97c9 TS |
7039 | } |
7040 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
7041 | { | |
7042 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 7043 | return TRUE; |
b49e97c9 | 7044 | } |
b34976b6 | 7045 | return FALSE; |
b49e97c9 TS |
7046 | } |
7047 | \f | |
7048 | /* Hook called by the linker routine which adds symbols from an object | |
7049 | file. We must handle the special MIPS section numbers here. */ | |
7050 | ||
b34976b6 | 7051 | bfd_boolean |
9719ad41 | 7052 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 7053 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
7054 | flagword *flagsp ATTRIBUTE_UNUSED, |
7055 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
7056 | { |
7057 | if (SGI_COMPAT (abfd) | |
7058 | && (abfd->flags & DYNAMIC) != 0 | |
7059 | && strcmp (*namep, "_rld_new_interface") == 0) | |
7060 | { | |
8dc1a139 | 7061 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 7062 | *namep = NULL; |
b34976b6 | 7063 | return TRUE; |
b49e97c9 TS |
7064 | } |
7065 | ||
eedecc07 DD |
7066 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
7067 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7068 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7069 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7070 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7071 | is not done for them. */ | |
7072 | if (!NEWABI_P(abfd) | |
7073 | && (sym->st_shndx == SHN_ABS) | |
7074 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7075 | { | |
7076 | *namep = NULL; | |
7077 | return TRUE; | |
7078 | } | |
7079 | ||
b49e97c9 TS |
7080 | switch (sym->st_shndx) |
7081 | { | |
7082 | case SHN_COMMON: | |
7083 | /* Common symbols less than the GP size are automatically | |
7084 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7085 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7086 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7087 | || IRIX_COMPAT (abfd) == ict_irix6) |
7088 | break; | |
7089 | /* Fall through. */ | |
7090 | case SHN_MIPS_SCOMMON: | |
7091 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
7092 | (*secp)->flags |= SEC_IS_COMMON; | |
7093 | *valp = sym->st_size; | |
7094 | break; | |
7095 | ||
7096 | case SHN_MIPS_TEXT: | |
7097 | /* This section is used in a shared object. */ | |
7098 | if (elf_tdata (abfd)->elf_text_section == NULL) | |
7099 | { | |
7100 | asymbol *elf_text_symbol; | |
7101 | asection *elf_text_section; | |
7102 | bfd_size_type amt = sizeof (asection); | |
7103 | ||
7104 | elf_text_section = bfd_zalloc (abfd, amt); | |
7105 | if (elf_text_section == NULL) | |
b34976b6 | 7106 | return FALSE; |
b49e97c9 TS |
7107 | |
7108 | amt = sizeof (asymbol); | |
7109 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7110 | if (elf_text_symbol == NULL) | |
b34976b6 | 7111 | return FALSE; |
b49e97c9 TS |
7112 | |
7113 | /* Initialize the section. */ | |
7114 | ||
7115 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
7116 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
7117 | ||
7118 | elf_text_section->symbol = elf_text_symbol; | |
7119 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
7120 | ||
7121 | elf_text_section->name = ".text"; | |
7122 | elf_text_section->flags = SEC_NO_FLAGS; | |
7123 | elf_text_section->output_section = NULL; | |
7124 | elf_text_section->owner = abfd; | |
7125 | elf_text_symbol->name = ".text"; | |
7126 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7127 | elf_text_symbol->section = elf_text_section; | |
7128 | } | |
7129 | /* This code used to do *secp = bfd_und_section_ptr if | |
7130 | info->shared. I don't know why, and that doesn't make sense, | |
7131 | so I took it out. */ | |
7132 | *secp = elf_tdata (abfd)->elf_text_section; | |
7133 | break; | |
7134 | ||
7135 | case SHN_MIPS_ACOMMON: | |
7136 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7137 | case SHN_MIPS_DATA: | |
7138 | /* This section is used in a shared object. */ | |
7139 | if (elf_tdata (abfd)->elf_data_section == NULL) | |
7140 | { | |
7141 | asymbol *elf_data_symbol; | |
7142 | asection *elf_data_section; | |
7143 | bfd_size_type amt = sizeof (asection); | |
7144 | ||
7145 | elf_data_section = bfd_zalloc (abfd, amt); | |
7146 | if (elf_data_section == NULL) | |
b34976b6 | 7147 | return FALSE; |
b49e97c9 TS |
7148 | |
7149 | amt = sizeof (asymbol); | |
7150 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7151 | if (elf_data_symbol == NULL) | |
b34976b6 | 7152 | return FALSE; |
b49e97c9 TS |
7153 | |
7154 | /* Initialize the section. */ | |
7155 | ||
7156 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
7157 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
7158 | ||
7159 | elf_data_section->symbol = elf_data_symbol; | |
7160 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
7161 | ||
7162 | elf_data_section->name = ".data"; | |
7163 | elf_data_section->flags = SEC_NO_FLAGS; | |
7164 | elf_data_section->output_section = NULL; | |
7165 | elf_data_section->owner = abfd; | |
7166 | elf_data_symbol->name = ".data"; | |
7167 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7168 | elf_data_symbol->section = elf_data_section; | |
7169 | } | |
7170 | /* This code used to do *secp = bfd_und_section_ptr if | |
7171 | info->shared. I don't know why, and that doesn't make sense, | |
7172 | so I took it out. */ | |
7173 | *secp = elf_tdata (abfd)->elf_data_section; | |
7174 | break; | |
7175 | ||
7176 | case SHN_MIPS_SUNDEFINED: | |
7177 | *secp = bfd_und_section_ptr; | |
7178 | break; | |
7179 | } | |
7180 | ||
7181 | if (SGI_COMPAT (abfd) | |
7182 | && ! info->shared | |
f13a99db | 7183 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7184 | && strcmp (*namep, "__rld_obj_head") == 0) |
7185 | { | |
7186 | struct elf_link_hash_entry *h; | |
14a793b2 | 7187 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7188 | |
7189 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7190 | bh = NULL; |
b49e97c9 | 7191 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 7192 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 7193 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 7194 | return FALSE; |
14a793b2 AM |
7195 | |
7196 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7197 | h->non_elf = 0; |
7198 | h->def_regular = 1; | |
b49e97c9 TS |
7199 | h->type = STT_OBJECT; |
7200 | ||
c152c796 | 7201 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7202 | return FALSE; |
b49e97c9 | 7203 | |
b34976b6 | 7204 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b4082c70 | 7205 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7206 | } |
7207 | ||
7208 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7209 | odd. This will cause something like .word SYM to come up with | |
7210 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7211 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7212 | ++*valp; |
7213 | ||
b34976b6 | 7214 | return TRUE; |
b49e97c9 TS |
7215 | } |
7216 | ||
7217 | /* This hook function is called before the linker writes out a global | |
7218 | symbol. We mark symbols as small common if appropriate. This is | |
7219 | also where we undo the increment of the value for a mips16 symbol. */ | |
7220 | ||
6e0b88f1 | 7221 | int |
9719ad41 RS |
7222 | _bfd_mips_elf_link_output_symbol_hook |
7223 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7224 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7225 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7226 | { |
7227 | /* If we see a common symbol, which implies a relocatable link, then | |
7228 | if a symbol was small common in an input file, mark it as small | |
7229 | common in the output file. */ | |
7230 | if (sym->st_shndx == SHN_COMMON | |
7231 | && strcmp (input_sec->name, ".scommon") == 0) | |
7232 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7233 | ||
df58fc94 | 7234 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7235 | sym->st_value &= ~1; |
b49e97c9 | 7236 | |
6e0b88f1 | 7237 | return 1; |
b49e97c9 TS |
7238 | } |
7239 | \f | |
7240 | /* Functions for the dynamic linker. */ | |
7241 | ||
7242 | /* Create dynamic sections when linking against a dynamic object. */ | |
7243 | ||
b34976b6 | 7244 | bfd_boolean |
9719ad41 | 7245 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
7246 | { |
7247 | struct elf_link_hash_entry *h; | |
14a793b2 | 7248 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7249 | flagword flags; |
7250 | register asection *s; | |
7251 | const char * const *namep; | |
0a44bf69 | 7252 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7253 | |
0a44bf69 | 7254 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7255 | BFD_ASSERT (htab != NULL); |
7256 | ||
b49e97c9 TS |
7257 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
7258 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7259 | ||
0a44bf69 RS |
7260 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
7261 | EABI doesn't. */ | |
7262 | if (!htab->is_vxworks) | |
b49e97c9 | 7263 | { |
3d4d4302 | 7264 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
7265 | if (s != NULL) |
7266 | { | |
7267 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7268 | return FALSE; | |
7269 | } | |
b49e97c9 TS |
7270 | } |
7271 | ||
7272 | /* We need to create .got section. */ | |
23cc69b6 | 7273 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
7274 | return FALSE; |
7275 | ||
0a44bf69 | 7276 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 7277 | return FALSE; |
b49e97c9 | 7278 | |
b49e97c9 | 7279 | /* Create .stub section. */ |
3d4d4302 AM |
7280 | s = bfd_make_section_anyway_with_flags (abfd, |
7281 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
7282 | flags | SEC_CODE); | |
4e41d0d7 RS |
7283 | if (s == NULL |
7284 | || ! bfd_set_section_alignment (abfd, s, | |
7285 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
7286 | return FALSE; | |
7287 | htab->sstubs = s; | |
b49e97c9 | 7288 | |
e6aea42d | 7289 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
b49e97c9 | 7290 | && !info->shared |
3d4d4302 | 7291 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 7292 | { |
3d4d4302 AM |
7293 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
7294 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 7295 | if (s == NULL |
b49e97c9 TS |
7296 | || ! bfd_set_section_alignment (abfd, s, |
7297 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 7298 | return FALSE; |
b49e97c9 TS |
7299 | } |
7300 | ||
7301 | /* On IRIX5, we adjust add some additional symbols and change the | |
7302 | alignments of several sections. There is no ABI documentation | |
7303 | indicating that this is necessary on IRIX6, nor any evidence that | |
7304 | the linker takes such action. */ | |
7305 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
7306 | { | |
7307 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7308 | { | |
14a793b2 | 7309 | bh = NULL; |
b49e97c9 | 7310 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
7311 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
7312 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7313 | return FALSE; |
14a793b2 AM |
7314 | |
7315 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7316 | h->non_elf = 0; |
7317 | h->def_regular = 1; | |
b49e97c9 TS |
7318 | h->type = STT_SECTION; |
7319 | ||
c152c796 | 7320 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7321 | return FALSE; |
b49e97c9 TS |
7322 | } |
7323 | ||
7324 | /* We need to create a .compact_rel section. */ | |
7325 | if (SGI_COMPAT (abfd)) | |
7326 | { | |
7327 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 7328 | return FALSE; |
b49e97c9 TS |
7329 | } |
7330 | ||
44c410de | 7331 | /* Change alignments of some sections. */ |
3d4d4302 | 7332 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 7333 | if (s != NULL) |
d80dcc6a | 7334 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7335 | s = bfd_get_linker_section (abfd, ".dynsym"); |
b49e97c9 | 7336 | if (s != NULL) |
d80dcc6a | 7337 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7338 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 7339 | if (s != NULL) |
d80dcc6a | 7340 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7341 | /* ??? */ |
b49e97c9 TS |
7342 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7343 | if (s != NULL) | |
d80dcc6a | 7344 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7345 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 7346 | if (s != NULL) |
d80dcc6a | 7347 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7348 | } |
7349 | ||
7350 | if (!info->shared) | |
7351 | { | |
14a793b2 AM |
7352 | const char *name; |
7353 | ||
7354 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
7355 | bh = NULL; | |
7356 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
7357 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
7358 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7359 | return FALSE; |
14a793b2 AM |
7360 | |
7361 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7362 | h->non_elf = 0; |
7363 | h->def_regular = 1; | |
b49e97c9 TS |
7364 | h->type = STT_SECTION; |
7365 | ||
c152c796 | 7366 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7367 | return FALSE; |
b49e97c9 TS |
7368 | |
7369 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7370 | { | |
7371 | /* __rld_map is a four byte word located in the .data section | |
7372 | and is filled in by the rtld to contain a pointer to | |
7373 | the _r_debug structure. Its symbol value will be set in | |
7374 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 7375 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 7376 | BFD_ASSERT (s != NULL); |
14a793b2 | 7377 | |
0abfb97a L |
7378 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
7379 | bh = NULL; | |
7380 | if (!(_bfd_generic_link_add_one_symbol | |
7381 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
7382 | get_elf_backend_data (abfd)->collect, &bh))) | |
7383 | return FALSE; | |
b49e97c9 | 7384 | |
0abfb97a L |
7385 | h = (struct elf_link_hash_entry *) bh; |
7386 | h->non_elf = 0; | |
7387 | h->def_regular = 1; | |
7388 | h->type = STT_OBJECT; | |
7389 | ||
7390 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7391 | return FALSE; | |
b4082c70 | 7392 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7393 | } |
7394 | } | |
7395 | ||
861fb55a DJ |
7396 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
7397 | Also create the _PROCEDURE_LINKAGE_TABLE symbol. */ | |
7398 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) | |
7399 | return FALSE; | |
7400 | ||
7401 | /* Cache the sections created above. */ | |
3d4d4302 AM |
7402 | htab->splt = bfd_get_linker_section (abfd, ".plt"); |
7403 | htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss"); | |
0a44bf69 RS |
7404 | if (htab->is_vxworks) |
7405 | { | |
3d4d4302 AM |
7406 | htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss"); |
7407 | htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt"); | |
861fb55a DJ |
7408 | } |
7409 | else | |
3d4d4302 | 7410 | htab->srelplt = bfd_get_linker_section (abfd, ".rel.plt"); |
861fb55a DJ |
7411 | if (!htab->sdynbss |
7412 | || (htab->is_vxworks && !htab->srelbss && !info->shared) | |
7413 | || !htab->srelplt | |
7414 | || !htab->splt) | |
7415 | abort (); | |
0a44bf69 | 7416 | |
861fb55a DJ |
7417 | if (htab->is_vxworks) |
7418 | { | |
0a44bf69 RS |
7419 | /* Do the usual VxWorks handling. */ |
7420 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
7421 | return FALSE; | |
7422 | ||
7423 | /* Work out the PLT sizes. */ | |
7424 | if (info->shared) | |
7425 | { | |
7426 | htab->plt_header_size | |
7427 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
7428 | htab->plt_entry_size | |
7429 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
7430 | } | |
7431 | else | |
7432 | { | |
7433 | htab->plt_header_size | |
7434 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
7435 | htab->plt_entry_size | |
7436 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
7437 | } | |
7438 | } | |
861fb55a DJ |
7439 | else if (!info->shared) |
7440 | { | |
7441 | /* All variants of the plt0 entry are the same size. */ | |
7442 | htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
7443 | htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
7444 | } | |
0a44bf69 | 7445 | |
b34976b6 | 7446 | return TRUE; |
b49e97c9 TS |
7447 | } |
7448 | \f | |
c224138d RS |
7449 | /* Return true if relocation REL against section SEC is a REL rather than |
7450 | RELA relocation. RELOCS is the first relocation in the section and | |
7451 | ABFD is the bfd that contains SEC. */ | |
7452 | ||
7453 | static bfd_boolean | |
7454 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7455 | const Elf_Internal_Rela *relocs, | |
7456 | const Elf_Internal_Rela *rel) | |
7457 | { | |
7458 | Elf_Internal_Shdr *rel_hdr; | |
7459 | const struct elf_backend_data *bed; | |
7460 | ||
d4730f92 BS |
7461 | /* To determine which flavor of relocation this is, we depend on the |
7462 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
7463 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
7464 | if (rel_hdr == NULL) | |
7465 | return FALSE; | |
c224138d | 7466 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
7467 | return ((size_t) (rel - relocs) |
7468 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
7469 | } |
7470 | ||
7471 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7472 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7473 | of the section that REL is against. */ | |
7474 | ||
7475 | static bfd_vma | |
7476 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7477 | reloc_howto_type *howto, bfd_byte *contents) | |
7478 | { | |
7479 | bfd_byte *location; | |
7480 | unsigned int r_type; | |
7481 | bfd_vma addend; | |
7482 | ||
7483 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7484 | location = contents + rel->r_offset; | |
7485 | ||
7486 | /* Get the addend, which is stored in the input file. */ | |
df58fc94 | 7487 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, FALSE, location); |
c224138d | 7488 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); |
df58fc94 | 7489 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, FALSE, location); |
c224138d RS |
7490 | |
7491 | return addend & howto->src_mask; | |
7492 | } | |
7493 | ||
7494 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7495 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7496 | and update *ADDEND with the final addend. Return true on success | |
7497 | or false if the LO16 could not be found. RELEND is the exclusive | |
7498 | upper bound on the relocations for REL's section. */ | |
7499 | ||
7500 | static bfd_boolean | |
7501 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
7502 | const Elf_Internal_Rela *rel, | |
7503 | const Elf_Internal_Rela *relend, | |
7504 | bfd_byte *contents, bfd_vma *addend) | |
7505 | { | |
7506 | unsigned int r_type, lo16_type; | |
7507 | const Elf_Internal_Rela *lo16_relocation; | |
7508 | reloc_howto_type *lo16_howto; | |
7509 | bfd_vma l; | |
7510 | ||
7511 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 7512 | if (mips16_reloc_p (r_type)) |
c224138d | 7513 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
7514 | else if (micromips_reloc_p (r_type)) |
7515 | lo16_type = R_MICROMIPS_LO16; | |
c224138d RS |
7516 | else |
7517 | lo16_type = R_MIPS_LO16; | |
7518 | ||
7519 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
7520 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
7521 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
7522 | LO16 value.) | |
7523 | ||
7524 | Scan ahead to find a matching LO16 relocation. | |
7525 | ||
7526 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
7527 | be immediately following. However, for the IRIX6 ABI, the next | |
7528 | relocation may be a composed relocation consisting of several | |
7529 | relocations for the same address. In that case, the R_MIPS_LO16 | |
7530 | relocation may occur as one of these. We permit a similar | |
7531 | extension in general, as that is useful for GCC. | |
7532 | ||
7533 | In some cases GCC dead code elimination removes the LO16 but keeps | |
7534 | the corresponding HI16. This is strictly speaking a violation of | |
7535 | the ABI but not immediately harmful. */ | |
7536 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
7537 | if (lo16_relocation == NULL) | |
7538 | return FALSE; | |
7539 | ||
7540 | /* Obtain the addend kept there. */ | |
7541 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
7542 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
7543 | ||
7544 | l <<= lo16_howto->rightshift; | |
7545 | l = _bfd_mips_elf_sign_extend (l, 16); | |
7546 | ||
7547 | *addend <<= 16; | |
7548 | *addend += l; | |
7549 | return TRUE; | |
7550 | } | |
7551 | ||
7552 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
7553 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
7554 | already holds the contents if it is nonull on entry. */ | |
7555 | ||
7556 | static bfd_boolean | |
7557 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
7558 | { | |
7559 | if (*contents) | |
7560 | return TRUE; | |
7561 | ||
7562 | /* Get cached copy if it exists. */ | |
7563 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7564 | { | |
7565 | *contents = elf_section_data (sec)->this_hdr.contents; | |
7566 | return TRUE; | |
7567 | } | |
7568 | ||
7569 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
7570 | } | |
7571 | ||
b49e97c9 TS |
7572 | /* Look through the relocs for a section during the first phase, and |
7573 | allocate space in the global offset table. */ | |
7574 | ||
b34976b6 | 7575 | bfd_boolean |
9719ad41 RS |
7576 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7577 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
7578 | { |
7579 | const char *name; | |
7580 | bfd *dynobj; | |
7581 | Elf_Internal_Shdr *symtab_hdr; | |
7582 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
7583 | size_t extsymoff; |
7584 | const Elf_Internal_Rela *rel; | |
7585 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 7586 | asection *sreloc; |
9c5bfbb7 | 7587 | const struct elf_backend_data *bed; |
0a44bf69 | 7588 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
7589 | bfd_byte *contents; |
7590 | bfd_vma addend; | |
7591 | reloc_howto_type *howto; | |
b49e97c9 | 7592 | |
1049f94e | 7593 | if (info->relocatable) |
b34976b6 | 7594 | return TRUE; |
b49e97c9 | 7595 | |
0a44bf69 | 7596 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7597 | BFD_ASSERT (htab != NULL); |
7598 | ||
b49e97c9 TS |
7599 | dynobj = elf_hash_table (info)->dynobj; |
7600 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7601 | sym_hashes = elf_sym_hashes (abfd); | |
7602 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7603 | ||
738e5348 RS |
7604 | bed = get_elf_backend_data (abfd); |
7605 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
7606 | ||
b49e97c9 TS |
7607 | /* Check for the mips16 stub sections. */ |
7608 | ||
7609 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 7610 | if (FN_STUB_P (name)) |
b49e97c9 TS |
7611 | { |
7612 | unsigned long r_symndx; | |
7613 | ||
7614 | /* Look at the relocation information to figure out which symbol | |
7615 | this is for. */ | |
7616 | ||
cb4437b8 | 7617 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7618 | if (r_symndx == 0) |
7619 | { | |
7620 | (*_bfd_error_handler) | |
7621 | (_("%B: Warning: cannot determine the target function for" | |
7622 | " stub section `%s'"), | |
7623 | abfd, name); | |
7624 | bfd_set_error (bfd_error_bad_value); | |
7625 | return FALSE; | |
7626 | } | |
b49e97c9 TS |
7627 | |
7628 | if (r_symndx < extsymoff | |
7629 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7630 | { | |
7631 | asection *o; | |
7632 | ||
7633 | /* This stub is for a local symbol. This stub will only be | |
7634 | needed if there is some relocation in this BFD, other | |
7635 | than a 16 bit function call, which refers to this symbol. */ | |
7636 | for (o = abfd->sections; o != NULL; o = o->next) | |
7637 | { | |
7638 | Elf_Internal_Rela *sec_relocs; | |
7639 | const Elf_Internal_Rela *r, *rend; | |
7640 | ||
7641 | /* We can ignore stub sections when looking for relocs. */ | |
7642 | if ((o->flags & SEC_RELOC) == 0 | |
7643 | || o->reloc_count == 0 | |
738e5348 | 7644 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
7645 | continue; |
7646 | ||
45d6a902 | 7647 | sec_relocs |
9719ad41 | 7648 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 7649 | info->keep_memory); |
b49e97c9 | 7650 | if (sec_relocs == NULL) |
b34976b6 | 7651 | return FALSE; |
b49e97c9 TS |
7652 | |
7653 | rend = sec_relocs + o->reloc_count; | |
7654 | for (r = sec_relocs; r < rend; r++) | |
7655 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 7656 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
7657 | break; |
7658 | ||
6cdc0ccc | 7659 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
7660 | free (sec_relocs); |
7661 | ||
7662 | if (r < rend) | |
7663 | break; | |
7664 | } | |
7665 | ||
7666 | if (o == NULL) | |
7667 | { | |
7668 | /* There is no non-call reloc for this stub, so we do | |
7669 | not need it. Since this function is called before | |
7670 | the linker maps input sections to output sections, we | |
7671 | can easily discard it by setting the SEC_EXCLUDE | |
7672 | flag. */ | |
7673 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 7674 | return TRUE; |
b49e97c9 TS |
7675 | } |
7676 | ||
7677 | /* Record this stub in an array of local symbol stubs for | |
7678 | this BFD. */ | |
7679 | if (elf_tdata (abfd)->local_stubs == NULL) | |
7680 | { | |
7681 | unsigned long symcount; | |
7682 | asection **n; | |
7683 | bfd_size_type amt; | |
7684 | ||
7685 | if (elf_bad_symtab (abfd)) | |
7686 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7687 | else | |
7688 | symcount = symtab_hdr->sh_info; | |
7689 | amt = symcount * sizeof (asection *); | |
9719ad41 | 7690 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 7691 | if (n == NULL) |
b34976b6 | 7692 | return FALSE; |
b49e97c9 TS |
7693 | elf_tdata (abfd)->local_stubs = n; |
7694 | } | |
7695 | ||
b9d58d71 | 7696 | sec->flags |= SEC_KEEP; |
b49e97c9 TS |
7697 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
7698 | ||
7699 | /* We don't need to set mips16_stubs_seen in this case. | |
7700 | That flag is used to see whether we need to look through | |
7701 | the global symbol table for stubs. We don't need to set | |
7702 | it here, because we just have a local stub. */ | |
7703 | } | |
7704 | else | |
7705 | { | |
7706 | struct mips_elf_link_hash_entry *h; | |
7707 | ||
7708 | h = ((struct mips_elf_link_hash_entry *) | |
7709 | sym_hashes[r_symndx - extsymoff]); | |
7710 | ||
973a3492 L |
7711 | while (h->root.root.type == bfd_link_hash_indirect |
7712 | || h->root.root.type == bfd_link_hash_warning) | |
7713 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
7714 | ||
b49e97c9 TS |
7715 | /* H is the symbol this stub is for. */ |
7716 | ||
b9d58d71 TS |
7717 | /* If we already have an appropriate stub for this function, we |
7718 | don't need another one, so we can discard this one. Since | |
7719 | this function is called before the linker maps input sections | |
7720 | to output sections, we can easily discard it by setting the | |
7721 | SEC_EXCLUDE flag. */ | |
7722 | if (h->fn_stub != NULL) | |
7723 | { | |
7724 | sec->flags |= SEC_EXCLUDE; | |
7725 | return TRUE; | |
7726 | } | |
7727 | ||
7728 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 7729 | h->fn_stub = sec; |
b34976b6 | 7730 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
7731 | } |
7732 | } | |
b9d58d71 | 7733 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
7734 | { |
7735 | unsigned long r_symndx; | |
7736 | struct mips_elf_link_hash_entry *h; | |
7737 | asection **loc; | |
7738 | ||
7739 | /* Look at the relocation information to figure out which symbol | |
7740 | this is for. */ | |
7741 | ||
cb4437b8 | 7742 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7743 | if (r_symndx == 0) |
7744 | { | |
7745 | (*_bfd_error_handler) | |
7746 | (_("%B: Warning: cannot determine the target function for" | |
7747 | " stub section `%s'"), | |
7748 | abfd, name); | |
7749 | bfd_set_error (bfd_error_bad_value); | |
7750 | return FALSE; | |
7751 | } | |
b49e97c9 TS |
7752 | |
7753 | if (r_symndx < extsymoff | |
7754 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7755 | { | |
b9d58d71 | 7756 | asection *o; |
b49e97c9 | 7757 | |
b9d58d71 TS |
7758 | /* This stub is for a local symbol. This stub will only be |
7759 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
7760 | that refers to this symbol. */ | |
7761 | for (o = abfd->sections; o != NULL; o = o->next) | |
7762 | { | |
7763 | Elf_Internal_Rela *sec_relocs; | |
7764 | const Elf_Internal_Rela *r, *rend; | |
7765 | ||
7766 | /* We can ignore stub sections when looking for relocs. */ | |
7767 | if ((o->flags & SEC_RELOC) == 0 | |
7768 | || o->reloc_count == 0 | |
738e5348 | 7769 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
7770 | continue; |
7771 | ||
7772 | sec_relocs | |
7773 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
7774 | info->keep_memory); | |
7775 | if (sec_relocs == NULL) | |
7776 | return FALSE; | |
7777 | ||
7778 | rend = sec_relocs + o->reloc_count; | |
7779 | for (r = sec_relocs; r < rend; r++) | |
7780 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
7781 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
7782 | break; | |
7783 | ||
7784 | if (elf_section_data (o)->relocs != sec_relocs) | |
7785 | free (sec_relocs); | |
7786 | ||
7787 | if (r < rend) | |
7788 | break; | |
7789 | } | |
7790 | ||
7791 | if (o == NULL) | |
7792 | { | |
7793 | /* There is no non-call reloc for this stub, so we do | |
7794 | not need it. Since this function is called before | |
7795 | the linker maps input sections to output sections, we | |
7796 | can easily discard it by setting the SEC_EXCLUDE | |
7797 | flag. */ | |
7798 | sec->flags |= SEC_EXCLUDE; | |
7799 | return TRUE; | |
7800 | } | |
7801 | ||
7802 | /* Record this stub in an array of local symbol call_stubs for | |
7803 | this BFD. */ | |
7804 | if (elf_tdata (abfd)->local_call_stubs == NULL) | |
7805 | { | |
7806 | unsigned long symcount; | |
7807 | asection **n; | |
7808 | bfd_size_type amt; | |
7809 | ||
7810 | if (elf_bad_symtab (abfd)) | |
7811 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7812 | else | |
7813 | symcount = symtab_hdr->sh_info; | |
7814 | amt = symcount * sizeof (asection *); | |
7815 | n = bfd_zalloc (abfd, amt); | |
7816 | if (n == NULL) | |
7817 | return FALSE; | |
7818 | elf_tdata (abfd)->local_call_stubs = n; | |
7819 | } | |
b49e97c9 | 7820 | |
b9d58d71 TS |
7821 | sec->flags |= SEC_KEEP; |
7822 | elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; | |
b49e97c9 | 7823 | |
b9d58d71 TS |
7824 | /* We don't need to set mips16_stubs_seen in this case. |
7825 | That flag is used to see whether we need to look through | |
7826 | the global symbol table for stubs. We don't need to set | |
7827 | it here, because we just have a local stub. */ | |
7828 | } | |
b49e97c9 | 7829 | else |
b49e97c9 | 7830 | { |
b9d58d71 TS |
7831 | h = ((struct mips_elf_link_hash_entry *) |
7832 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 7833 | |
b9d58d71 | 7834 | /* H is the symbol this stub is for. */ |
68ffbac6 | 7835 | |
b9d58d71 TS |
7836 | if (CALL_FP_STUB_P (name)) |
7837 | loc = &h->call_fp_stub; | |
7838 | else | |
7839 | loc = &h->call_stub; | |
68ffbac6 | 7840 | |
b9d58d71 TS |
7841 | /* If we already have an appropriate stub for this function, we |
7842 | don't need another one, so we can discard this one. Since | |
7843 | this function is called before the linker maps input sections | |
7844 | to output sections, we can easily discard it by setting the | |
7845 | SEC_EXCLUDE flag. */ | |
7846 | if (*loc != NULL) | |
7847 | { | |
7848 | sec->flags |= SEC_EXCLUDE; | |
7849 | return TRUE; | |
7850 | } | |
b49e97c9 | 7851 | |
b9d58d71 TS |
7852 | sec->flags |= SEC_KEEP; |
7853 | *loc = sec; | |
7854 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
7855 | } | |
b49e97c9 TS |
7856 | } |
7857 | ||
b49e97c9 | 7858 | sreloc = NULL; |
c224138d | 7859 | contents = NULL; |
b49e97c9 TS |
7860 | for (rel = relocs; rel < rel_end; ++rel) |
7861 | { | |
7862 | unsigned long r_symndx; | |
7863 | unsigned int r_type; | |
7864 | struct elf_link_hash_entry *h; | |
861fb55a | 7865 | bfd_boolean can_make_dynamic_p; |
b49e97c9 TS |
7866 | |
7867 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
7868 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7869 | ||
7870 | if (r_symndx < extsymoff) | |
7871 | h = NULL; | |
7872 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
7873 | { | |
7874 | (*_bfd_error_handler) | |
d003868e AM |
7875 | (_("%B: Malformed reloc detected for section %s"), |
7876 | abfd, name); | |
b49e97c9 | 7877 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7878 | return FALSE; |
b49e97c9 TS |
7879 | } |
7880 | else | |
7881 | { | |
7882 | h = sym_hashes[r_symndx - extsymoff]; | |
3e08fb72 NC |
7883 | while (h != NULL |
7884 | && (h->root.type == bfd_link_hash_indirect | |
7885 | || h->root.type == bfd_link_hash_warning)) | |
861fb55a DJ |
7886 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
7887 | } | |
b49e97c9 | 7888 | |
861fb55a DJ |
7889 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
7890 | relocation into a dynamic one. */ | |
7891 | can_make_dynamic_p = FALSE; | |
7892 | switch (r_type) | |
7893 | { | |
861fb55a DJ |
7894 | case R_MIPS_GOT16: |
7895 | case R_MIPS_CALL16: | |
7896 | case R_MIPS_CALL_HI16: | |
7897 | case R_MIPS_CALL_LO16: | |
7898 | case R_MIPS_GOT_HI16: | |
7899 | case R_MIPS_GOT_LO16: | |
7900 | case R_MIPS_GOT_PAGE: | |
7901 | case R_MIPS_GOT_OFST: | |
7902 | case R_MIPS_GOT_DISP: | |
7903 | case R_MIPS_TLS_GOTTPREL: | |
7904 | case R_MIPS_TLS_GD: | |
7905 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
7906 | case R_MIPS16_GOT16: |
7907 | case R_MIPS16_CALL16: | |
7908 | case R_MIPS16_TLS_GOTTPREL: | |
7909 | case R_MIPS16_TLS_GD: | |
7910 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
7911 | case R_MICROMIPS_GOT16: |
7912 | case R_MICROMIPS_CALL16: | |
7913 | case R_MICROMIPS_CALL_HI16: | |
7914 | case R_MICROMIPS_CALL_LO16: | |
7915 | case R_MICROMIPS_GOT_HI16: | |
7916 | case R_MICROMIPS_GOT_LO16: | |
7917 | case R_MICROMIPS_GOT_PAGE: | |
7918 | case R_MICROMIPS_GOT_OFST: | |
7919 | case R_MICROMIPS_GOT_DISP: | |
7920 | case R_MICROMIPS_TLS_GOTTPREL: | |
7921 | case R_MICROMIPS_TLS_GD: | |
7922 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
7923 | if (dynobj == NULL) |
7924 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7925 | if (!mips_elf_create_got_section (dynobj, info)) | |
7926 | return FALSE; | |
7927 | if (htab->is_vxworks && !info->shared) | |
b49e97c9 | 7928 | { |
861fb55a DJ |
7929 | (*_bfd_error_handler) |
7930 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
7931 | abfd, (unsigned long) rel->r_offset); | |
7932 | bfd_set_error (bfd_error_bad_value); | |
7933 | return FALSE; | |
b49e97c9 | 7934 | } |
861fb55a | 7935 | break; |
b49e97c9 | 7936 | |
99da6b5f AN |
7937 | /* This is just a hint; it can safely be ignored. Don't set |
7938 | has_static_relocs for the corresponding symbol. */ | |
7939 | case R_MIPS_JALR: | |
df58fc94 | 7940 | case R_MICROMIPS_JALR: |
99da6b5f AN |
7941 | break; |
7942 | ||
861fb55a DJ |
7943 | case R_MIPS_32: |
7944 | case R_MIPS_REL32: | |
7945 | case R_MIPS_64: | |
7946 | /* In VxWorks executables, references to external symbols | |
7947 | must be handled using copy relocs or PLT entries; it is not | |
7948 | possible to convert this relocation into a dynamic one. | |
7949 | ||
7950 | For executables that use PLTs and copy-relocs, we have a | |
7951 | choice between converting the relocation into a dynamic | |
7952 | one or using copy relocations or PLT entries. It is | |
7953 | usually better to do the former, unless the relocation is | |
7954 | against a read-only section. */ | |
7955 | if ((info->shared | |
7956 | || (h != NULL | |
7957 | && !htab->is_vxworks | |
7958 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
7959 | && !(!info->nocopyreloc | |
7960 | && !PIC_OBJECT_P (abfd) | |
7961 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
7962 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 7963 | { |
861fb55a | 7964 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
7965 | if (dynobj == NULL) |
7966 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
b49e97c9 | 7967 | break; |
861fb55a | 7968 | } |
21d790b9 MR |
7969 | /* For sections that are not SEC_ALLOC a copy reloc would be |
7970 | output if possible (implying questionable semantics for | |
7971 | read-only data objects) or otherwise the final link would | |
7972 | fail as ld.so will not process them and could not therefore | |
7973 | handle any outstanding dynamic relocations. | |
7974 | ||
7975 | For such sections that are also SEC_DEBUGGING, we can avoid | |
7976 | these problems by simply ignoring any relocs as these | |
7977 | sections have a predefined use and we know it is safe to do | |
7978 | so. | |
7979 | ||
7980 | This is needed in cases such as a global symbol definition | |
7981 | in a shared library causing a common symbol from an object | |
7982 | file to be converted to an undefined reference. If that | |
7983 | happens, then all the relocations against this symbol from | |
7984 | SEC_DEBUGGING sections in the object file will resolve to | |
7985 | nil. */ | |
7986 | if ((sec->flags & SEC_DEBUGGING) != 0) | |
7987 | break; | |
861fb55a | 7988 | /* Fall through. */ |
b49e97c9 | 7989 | |
861fb55a DJ |
7990 | default: |
7991 | /* Most static relocations require pointer equality, except | |
7992 | for branches. */ | |
7993 | if (h) | |
7994 | h->pointer_equality_needed = TRUE; | |
7995 | /* Fall through. */ | |
b49e97c9 | 7996 | |
861fb55a DJ |
7997 | case R_MIPS_26: |
7998 | case R_MIPS_PC16: | |
7999 | case R_MIPS16_26: | |
df58fc94 RS |
8000 | case R_MICROMIPS_26_S1: |
8001 | case R_MICROMIPS_PC7_S1: | |
8002 | case R_MICROMIPS_PC10_S1: | |
8003 | case R_MICROMIPS_PC16_S1: | |
8004 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
8005 | if (h) |
8006 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE; | |
8007 | break; | |
b49e97c9 TS |
8008 | } |
8009 | ||
0a44bf69 RS |
8010 | if (h) |
8011 | { | |
0a44bf69 RS |
8012 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
8013 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
8014 | room for them in .rela.dyn. */ | |
8015 | if (is_gott_symbol (info, h)) | |
8016 | { | |
8017 | if (sreloc == NULL) | |
8018 | { | |
8019 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
8020 | if (sreloc == NULL) | |
8021 | return FALSE; | |
8022 | } | |
8023 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
8024 | if (MIPS_ELF_READONLY_SECTION (sec)) |
8025 | /* We tell the dynamic linker that there are | |
8026 | relocations against the text segment. */ | |
8027 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
8028 | } |
8029 | } | |
df58fc94 RS |
8030 | else if (call_lo16_reloc_p (r_type) |
8031 | || got_lo16_reloc_p (r_type) | |
8032 | || got_disp_reloc_p (r_type) | |
738e5348 | 8033 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
8034 | { |
8035 | /* We may need a local GOT entry for this relocation. We | |
8036 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
8037 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
8038 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
8039 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 8040 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 8041 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 8042 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 RS |
8043 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
8044 | rel->r_addend, info, 0)) | |
f4416af6 | 8045 | return FALSE; |
b49e97c9 TS |
8046 | } |
8047 | ||
8f0c309a CLT |
8048 | if (h != NULL |
8049 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
8050 | ELF_ST_IS_MIPS16 (h->other))) | |
861fb55a DJ |
8051 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; |
8052 | ||
b49e97c9 TS |
8053 | switch (r_type) |
8054 | { | |
8055 | case R_MIPS_CALL16: | |
738e5348 | 8056 | case R_MIPS16_CALL16: |
df58fc94 | 8057 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8058 | if (h == NULL) |
8059 | { | |
8060 | (*_bfd_error_handler) | |
d003868e AM |
8061 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
8062 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 8063 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8064 | return FALSE; |
b49e97c9 TS |
8065 | } |
8066 | /* Fall through. */ | |
8067 | ||
8068 | case R_MIPS_CALL_HI16: | |
8069 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8070 | case R_MICROMIPS_CALL_HI16: |
8071 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8072 | if (h != NULL) |
8073 | { | |
6ccf4795 RS |
8074 | /* Make sure there is room in the regular GOT to hold the |
8075 | function's address. We may eliminate it in favour of | |
8076 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
8077 | if (!mips_elf_record_global_got_symbol (h, abfd, info, TRUE, 0)) | |
b34976b6 | 8078 | return FALSE; |
b49e97c9 TS |
8079 | |
8080 | /* We need a stub, not a plt entry for the undefined | |
8081 | function. But we record it as if it needs plt. See | |
c152c796 | 8082 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8083 | h->needs_plt = 1; |
b49e97c9 TS |
8084 | h->type = STT_FUNC; |
8085 | } | |
8086 | break; | |
8087 | ||
0fdc1bf1 | 8088 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8089 | case R_MICROMIPS_GOT_PAGE: |
0fdc1bf1 AO |
8090 | /* If this is a global, overridable symbol, GOT_PAGE will |
8091 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d | 8092 | if (h) |
0fdc1bf1 AO |
8093 | { |
8094 | struct mips_elf_link_hash_entry *hmips = | |
8095 | (struct mips_elf_link_hash_entry *) h; | |
143d77c5 | 8096 | |
3a3b6725 | 8097 | /* This symbol is definitely not overridable. */ |
f5385ebf | 8098 | if (hmips->root.def_regular |
0fdc1bf1 | 8099 | && ! (info->shared && ! info->symbolic |
f5385ebf | 8100 | && ! hmips->root.forced_local)) |
c224138d | 8101 | h = NULL; |
0fdc1bf1 AO |
8102 | } |
8103 | /* Fall through. */ | |
8104 | ||
738e5348 | 8105 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8106 | case R_MIPS_GOT16: |
8107 | case R_MIPS_GOT_HI16: | |
8108 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8109 | case R_MICROMIPS_GOT16: |
8110 | case R_MICROMIPS_GOT_HI16: | |
8111 | case R_MICROMIPS_GOT_LO16: | |
8112 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8113 | { |
3a3b6725 DJ |
8114 | /* This relocation needs (or may need, if h != NULL) a |
8115 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8116 | know for sure until we know whether the symbol is | |
8117 | preemptible. */ | |
c224138d RS |
8118 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8119 | { | |
8120 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8121 | return FALSE; | |
8122 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
8123 | addend = mips_elf_read_rel_addend (abfd, rel, | |
8124 | howto, contents); | |
9684f078 | 8125 | if (got16_reloc_p (r_type)) |
c224138d RS |
8126 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, |
8127 | contents, &addend); | |
8128 | else | |
8129 | addend <<= howto->rightshift; | |
8130 | } | |
8131 | else | |
8132 | addend = rel->r_addend; | |
a8028dd0 RS |
8133 | if (!mips_elf_record_got_page_entry (info, abfd, r_symndx, |
8134 | addend)) | |
c224138d | 8135 | return FALSE; |
c224138d RS |
8136 | } |
8137 | /* Fall through. */ | |
8138 | ||
b49e97c9 | 8139 | case R_MIPS_GOT_DISP: |
df58fc94 | 8140 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 RS |
8141 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
8142 | FALSE, 0)) | |
b34976b6 | 8143 | return FALSE; |
b49e97c9 TS |
8144 | break; |
8145 | ||
0f20cc35 | 8146 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 8147 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 8148 | case R_MICROMIPS_TLS_GOTTPREL: |
0f20cc35 DJ |
8149 | if (info->shared) |
8150 | info->flags |= DF_STATIC_TLS; | |
8151 | /* Fall through */ | |
8152 | ||
8153 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8154 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
8155 | case R_MICROMIPS_TLS_LDM: |
8156 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 8157 | { |
cf35638d | 8158 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
8159 | h = NULL; |
8160 | } | |
8161 | /* Fall through */ | |
8162 | ||
8163 | case R_MIPS_TLS_GD: | |
d0f13682 | 8164 | case R_MIPS16_TLS_GD: |
df58fc94 | 8165 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
8166 | /* This symbol requires a global offset table entry, or two |
8167 | for TLS GD relocations. */ | |
8168 | { | |
df58fc94 RS |
8169 | unsigned char flag; |
8170 | ||
8171 | flag = (tls_gd_reloc_p (r_type) | |
8172 | ? GOT_TLS_GD | |
8173 | : tls_ldm_reloc_p (r_type) ? GOT_TLS_LDM : GOT_TLS_IE); | |
0f20cc35 DJ |
8174 | if (h != NULL) |
8175 | { | |
8176 | struct mips_elf_link_hash_entry *hmips = | |
8177 | (struct mips_elf_link_hash_entry *) h; | |
8178 | hmips->tls_type |= flag; | |
8179 | ||
6ccf4795 RS |
8180 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
8181 | FALSE, flag)) | |
0f20cc35 DJ |
8182 | return FALSE; |
8183 | } | |
8184 | else | |
8185 | { | |
cf35638d | 8186 | BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != STN_UNDEF); |
0f20cc35 | 8187 | |
a8028dd0 RS |
8188 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
8189 | rel->r_addend, | |
8190 | info, flag)) | |
0f20cc35 DJ |
8191 | return FALSE; |
8192 | } | |
8193 | } | |
8194 | break; | |
8195 | ||
b49e97c9 TS |
8196 | case R_MIPS_32: |
8197 | case R_MIPS_REL32: | |
8198 | case R_MIPS_64: | |
0a44bf69 RS |
8199 | /* In VxWorks executables, references to external symbols |
8200 | are handled using copy relocs or PLT stubs, so there's | |
8201 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 8202 | if (can_make_dynamic_p) |
b49e97c9 TS |
8203 | { |
8204 | if (sreloc == NULL) | |
8205 | { | |
0a44bf69 | 8206 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 8207 | if (sreloc == NULL) |
f4416af6 | 8208 | return FALSE; |
b49e97c9 | 8209 | } |
9a59ad6b | 8210 | if (info->shared && h == NULL) |
82f0cfbd EC |
8211 | { |
8212 | /* When creating a shared object, we must copy these | |
8213 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
8214 | relocs. Make room for this reloc in .rel(a).dyn. */ |
8215 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 8216 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8217 | /* We tell the dynamic linker that there are |
8218 | relocations against the text segment. */ | |
8219 | info->flags |= DF_TEXTREL; | |
8220 | } | |
b49e97c9 TS |
8221 | else |
8222 | { | |
8223 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 8224 | |
9a59ad6b DJ |
8225 | /* For a shared object, we must copy this relocation |
8226 | unless the symbol turns out to be undefined and | |
8227 | weak with non-default visibility, in which case | |
8228 | it will be left as zero. | |
8229 | ||
8230 | We could elide R_MIPS_REL32 for locally binding symbols | |
8231 | in shared libraries, but do not yet do so. | |
8232 | ||
8233 | For an executable, we only need to copy this | |
8234 | reloc if the symbol is defined in a dynamic | |
8235 | object. */ | |
b49e97c9 TS |
8236 | hmips = (struct mips_elf_link_hash_entry *) h; |
8237 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 8238 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8239 | /* We need it to tell the dynamic linker if there |
8240 | are relocations against the text segment. */ | |
8241 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 8242 | } |
b49e97c9 TS |
8243 | } |
8244 | ||
8245 | if (SGI_COMPAT (abfd)) | |
8246 | mips_elf_hash_table (info)->compact_rel_size += | |
8247 | sizeof (Elf32_External_crinfo); | |
8248 | break; | |
8249 | ||
8250 | case R_MIPS_26: | |
8251 | case R_MIPS_GPREL16: | |
8252 | case R_MIPS_LITERAL: | |
8253 | case R_MIPS_GPREL32: | |
df58fc94 RS |
8254 | case R_MICROMIPS_26_S1: |
8255 | case R_MICROMIPS_GPREL16: | |
8256 | case R_MICROMIPS_LITERAL: | |
8257 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
8258 | if (SGI_COMPAT (abfd)) |
8259 | mips_elf_hash_table (info)->compact_rel_size += | |
8260 | sizeof (Elf32_External_crinfo); | |
8261 | break; | |
8262 | ||
8263 | /* This relocation describes the C++ object vtable hierarchy. | |
8264 | Reconstruct it for later use during GC. */ | |
8265 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 8266 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 8267 | return FALSE; |
b49e97c9 TS |
8268 | break; |
8269 | ||
8270 | /* This relocation describes which C++ vtable entries are actually | |
8271 | used. Record for later use during GC. */ | |
8272 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
8273 | BFD_ASSERT (h != NULL); |
8274 | if (h != NULL | |
8275 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 8276 | return FALSE; |
b49e97c9 TS |
8277 | break; |
8278 | ||
8279 | default: | |
8280 | break; | |
8281 | } | |
8282 | ||
8283 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
8284 | related to taking the function's address. This doesn't apply to |
8285 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
8286 | a normal .got entry. */ | |
8287 | if (!htab->is_vxworks && h != NULL) | |
8288 | switch (r_type) | |
8289 | { | |
8290 | default: | |
8291 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
8292 | break; | |
738e5348 | 8293 | case R_MIPS16_CALL16: |
0a44bf69 RS |
8294 | case R_MIPS_CALL16: |
8295 | case R_MIPS_CALL_HI16: | |
8296 | case R_MIPS_CALL_LO16: | |
8297 | case R_MIPS_JALR: | |
df58fc94 RS |
8298 | case R_MICROMIPS_CALL16: |
8299 | case R_MICROMIPS_CALL_HI16: | |
8300 | case R_MICROMIPS_CALL_LO16: | |
8301 | case R_MICROMIPS_JALR: | |
0a44bf69 RS |
8302 | break; |
8303 | } | |
b49e97c9 | 8304 | |
738e5348 RS |
8305 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
8306 | if there is one. We only need to handle global symbols here; | |
8307 | we decide whether to keep or delete stubs for local symbols | |
8308 | when processing the stub's relocations. */ | |
b49e97c9 | 8309 | if (h != NULL |
738e5348 RS |
8310 | && !mips16_call_reloc_p (r_type) |
8311 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
8312 | { |
8313 | struct mips_elf_link_hash_entry *mh; | |
8314 | ||
8315 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 8316 | mh->need_fn_stub = TRUE; |
b49e97c9 | 8317 | } |
861fb55a DJ |
8318 | |
8319 | /* Refuse some position-dependent relocations when creating a | |
8320 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
8321 | not PIC, but we can create dynamic relocations and the result | |
8322 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
8323 | combined with R_MIPS_GOT16. */ | |
8324 | if (info->shared) | |
8325 | { | |
8326 | switch (r_type) | |
8327 | { | |
8328 | case R_MIPS16_HI16: | |
8329 | case R_MIPS_HI16: | |
8330 | case R_MIPS_HIGHER: | |
8331 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
8332 | case R_MICROMIPS_HI16: |
8333 | case R_MICROMIPS_HIGHER: | |
8334 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
8335 | /* Don't refuse a high part relocation if it's against |
8336 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 8337 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
8338 | break; |
8339 | ||
8340 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
8341 | and has a special meaning. */ | |
8342 | if (!NEWABI_P (abfd) && h != NULL | |
8343 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
8344 | break; | |
8345 | ||
0fc1eb3c RS |
8346 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
8347 | if (is_gott_symbol (info, h)) | |
8348 | break; | |
8349 | ||
861fb55a DJ |
8350 | /* FALLTHROUGH */ |
8351 | ||
8352 | case R_MIPS16_26: | |
8353 | case R_MIPS_26: | |
df58fc94 | 8354 | case R_MICROMIPS_26_S1: |
861fb55a DJ |
8355 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); |
8356 | (*_bfd_error_handler) | |
8357 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
8358 | abfd, howto->name, | |
8359 | (h) ? h->root.root.string : "a local symbol"); | |
8360 | bfd_set_error (bfd_error_bad_value); | |
8361 | return FALSE; | |
8362 | default: | |
8363 | break; | |
8364 | } | |
8365 | } | |
b49e97c9 TS |
8366 | } |
8367 | ||
b34976b6 | 8368 | return TRUE; |
b49e97c9 TS |
8369 | } |
8370 | \f | |
d0647110 | 8371 | bfd_boolean |
9719ad41 RS |
8372 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
8373 | struct bfd_link_info *link_info, | |
8374 | bfd_boolean *again) | |
d0647110 AO |
8375 | { |
8376 | Elf_Internal_Rela *internal_relocs; | |
8377 | Elf_Internal_Rela *irel, *irelend; | |
8378 | Elf_Internal_Shdr *symtab_hdr; | |
8379 | bfd_byte *contents = NULL; | |
d0647110 AO |
8380 | size_t extsymoff; |
8381 | bfd_boolean changed_contents = FALSE; | |
8382 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
8383 | Elf_Internal_Sym *isymbuf = NULL; | |
8384 | ||
8385 | /* We are not currently changing any sizes, so only one pass. */ | |
8386 | *again = FALSE; | |
8387 | ||
1049f94e | 8388 | if (link_info->relocatable) |
d0647110 AO |
8389 | return TRUE; |
8390 | ||
9719ad41 | 8391 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 8392 | link_info->keep_memory); |
d0647110 AO |
8393 | if (internal_relocs == NULL) |
8394 | return TRUE; | |
8395 | ||
8396 | irelend = internal_relocs + sec->reloc_count | |
8397 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
8398 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8399 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8400 | ||
8401 | for (irel = internal_relocs; irel < irelend; irel++) | |
8402 | { | |
8403 | bfd_vma symval; | |
8404 | bfd_signed_vma sym_offset; | |
8405 | unsigned int r_type; | |
8406 | unsigned long r_symndx; | |
8407 | asection *sym_sec; | |
8408 | unsigned long instruction; | |
8409 | ||
8410 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
8411 | with a JALR relocation, that indicate where they jump to. | |
8412 | This saves some pipeline bubbles. */ | |
8413 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
8414 | if (r_type != R_MIPS_JALR) | |
8415 | continue; | |
8416 | ||
8417 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
8418 | /* Compute the address of the jump target. */ | |
8419 | if (r_symndx >= extsymoff) | |
8420 | { | |
8421 | struct mips_elf_link_hash_entry *h | |
8422 | = ((struct mips_elf_link_hash_entry *) | |
8423 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
8424 | ||
8425 | while (h->root.root.type == bfd_link_hash_indirect | |
8426 | || h->root.root.type == bfd_link_hash_warning) | |
8427 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 8428 | |
d0647110 AO |
8429 | /* If a symbol is undefined, or if it may be overridden, |
8430 | skip it. */ | |
8431 | if (! ((h->root.root.type == bfd_link_hash_defined | |
8432 | || h->root.root.type == bfd_link_hash_defweak) | |
8433 | && h->root.root.u.def.section) | |
8434 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 8435 | && !h->root.forced_local)) |
d0647110 AO |
8436 | continue; |
8437 | ||
8438 | sym_sec = h->root.root.u.def.section; | |
8439 | if (sym_sec->output_section) | |
8440 | symval = (h->root.root.u.def.value | |
8441 | + sym_sec->output_section->vma | |
8442 | + sym_sec->output_offset); | |
8443 | else | |
8444 | symval = h->root.root.u.def.value; | |
8445 | } | |
8446 | else | |
8447 | { | |
8448 | Elf_Internal_Sym *isym; | |
8449 | ||
8450 | /* Read this BFD's symbols if we haven't done so already. */ | |
8451 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
8452 | { | |
8453 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8454 | if (isymbuf == NULL) | |
8455 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8456 | symtab_hdr->sh_info, 0, | |
8457 | NULL, NULL, NULL); | |
8458 | if (isymbuf == NULL) | |
8459 | goto relax_return; | |
8460 | } | |
8461 | ||
8462 | isym = isymbuf + r_symndx; | |
8463 | if (isym->st_shndx == SHN_UNDEF) | |
8464 | continue; | |
8465 | else if (isym->st_shndx == SHN_ABS) | |
8466 | sym_sec = bfd_abs_section_ptr; | |
8467 | else if (isym->st_shndx == SHN_COMMON) | |
8468 | sym_sec = bfd_com_section_ptr; | |
8469 | else | |
8470 | sym_sec | |
8471 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8472 | symval = isym->st_value | |
8473 | + sym_sec->output_section->vma | |
8474 | + sym_sec->output_offset; | |
8475 | } | |
8476 | ||
8477 | /* Compute branch offset, from delay slot of the jump to the | |
8478 | branch target. */ | |
8479 | sym_offset = (symval + irel->r_addend) | |
8480 | - (sec_start + irel->r_offset + 4); | |
8481 | ||
8482 | /* Branch offset must be properly aligned. */ | |
8483 | if ((sym_offset & 3) != 0) | |
8484 | continue; | |
8485 | ||
8486 | sym_offset >>= 2; | |
8487 | ||
8488 | /* Check that it's in range. */ | |
8489 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
8490 | continue; | |
143d77c5 | 8491 | |
d0647110 | 8492 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
8493 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
8494 | goto relax_return; | |
d0647110 AO |
8495 | |
8496 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
8497 | ||
8498 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
8499 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
8500 | instruction = 0x04110000; | |
8501 | /* If it was jr <reg>, turn it into b <target>. */ | |
8502 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
8503 | instruction = 0x10000000; | |
8504 | else | |
8505 | continue; | |
8506 | ||
8507 | instruction |= (sym_offset & 0xffff); | |
8508 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
8509 | changed_contents = TRUE; | |
8510 | } | |
8511 | ||
8512 | if (contents != NULL | |
8513 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8514 | { | |
8515 | if (!changed_contents && !link_info->keep_memory) | |
8516 | free (contents); | |
8517 | else | |
8518 | { | |
8519 | /* Cache the section contents for elf_link_input_bfd. */ | |
8520 | elf_section_data (sec)->this_hdr.contents = contents; | |
8521 | } | |
8522 | } | |
8523 | return TRUE; | |
8524 | ||
143d77c5 | 8525 | relax_return: |
eea6121a AM |
8526 | if (contents != NULL |
8527 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8528 | free (contents); | |
d0647110 AO |
8529 | return FALSE; |
8530 | } | |
8531 | \f | |
9a59ad6b DJ |
8532 | /* Allocate space for global sym dynamic relocs. */ |
8533 | ||
8534 | static bfd_boolean | |
8535 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8536 | { | |
8537 | struct bfd_link_info *info = inf; | |
8538 | bfd *dynobj; | |
8539 | struct mips_elf_link_hash_entry *hmips; | |
8540 | struct mips_elf_link_hash_table *htab; | |
8541 | ||
8542 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8543 | BFD_ASSERT (htab != NULL); |
8544 | ||
9a59ad6b DJ |
8545 | dynobj = elf_hash_table (info)->dynobj; |
8546 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8547 | ||
8548 | /* VxWorks executables are handled elsewhere; we only need to | |
8549 | allocate relocations in shared objects. */ | |
8550 | if (htab->is_vxworks && !info->shared) | |
8551 | return TRUE; | |
8552 | ||
7686d77d AM |
8553 | /* Ignore indirect symbols. All relocations against such symbols |
8554 | will be redirected to the target symbol. */ | |
8555 | if (h->root.type == bfd_link_hash_indirect) | |
63897e2c RS |
8556 | return TRUE; |
8557 | ||
9a59ad6b DJ |
8558 | /* If this symbol is defined in a dynamic object, or we are creating |
8559 | a shared library, we will need to copy any R_MIPS_32 or | |
8560 | R_MIPS_REL32 relocs against it into the output file. */ | |
8561 | if (! info->relocatable | |
8562 | && hmips->possibly_dynamic_relocs != 0 | |
8563 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 8564 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
9a59ad6b DJ |
8565 | || info->shared)) |
8566 | { | |
8567 | bfd_boolean do_copy = TRUE; | |
8568 | ||
8569 | if (h->root.type == bfd_link_hash_undefweak) | |
8570 | { | |
8571 | /* Do not copy relocations for undefined weak symbols with | |
8572 | non-default visibility. */ | |
8573 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8574 | do_copy = FALSE; | |
8575 | ||
8576 | /* Make sure undefined weak symbols are output as a dynamic | |
8577 | symbol in PIEs. */ | |
8578 | else if (h->dynindx == -1 && !h->forced_local) | |
8579 | { | |
8580 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8581 | return FALSE; | |
8582 | } | |
8583 | } | |
8584 | ||
8585 | if (do_copy) | |
8586 | { | |
aff469fa | 8587 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
8588 | the SVR4 psABI requires it to have a dynamic symbol table |
8589 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
8590 | relocations against it. | |
8591 | ||
8592 | VxWorks does not enforce the same mapping between the GOT | |
8593 | and the symbol table, so the same requirement does not | |
8594 | apply there. */ | |
6ccf4795 RS |
8595 | if (!htab->is_vxworks) |
8596 | { | |
8597 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8598 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8599 | hmips->got_only_for_calls = FALSE; | |
8600 | } | |
aff469fa | 8601 | |
9a59ad6b DJ |
8602 | mips_elf_allocate_dynamic_relocations |
8603 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8604 | if (hmips->readonly_reloc) | |
8605 | /* We tell the dynamic linker that there are relocations | |
8606 | against the text segment. */ | |
8607 | info->flags |= DF_TEXTREL; | |
8608 | } | |
8609 | } | |
8610 | ||
8611 | return TRUE; | |
8612 | } | |
8613 | ||
b49e97c9 TS |
8614 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8615 | regular object. The current definition is in some section of the | |
8616 | dynamic object, but we're not including those sections. We have to | |
8617 | change the definition to something the rest of the link can | |
8618 | understand. */ | |
8619 | ||
b34976b6 | 8620 | bfd_boolean |
9719ad41 RS |
8621 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
8622 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
8623 | { |
8624 | bfd *dynobj; | |
8625 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 8626 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8627 | |
5108fc1b | 8628 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8629 | BFD_ASSERT (htab != NULL); |
8630 | ||
b49e97c9 | 8631 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 8632 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
8633 | |
8634 | /* Make sure we know what is going on here. */ | |
8635 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8636 | && (h->needs_plt |
f6e332e6 | 8637 | || h->u.weakdef != NULL |
f5385ebf AM |
8638 | || (h->def_dynamic |
8639 | && h->ref_regular | |
8640 | && !h->def_regular))); | |
b49e97c9 | 8641 | |
b49e97c9 | 8642 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8643 | |
861fb55a DJ |
8644 | /* If there are call relocations against an externally-defined symbol, |
8645 | see whether we can create a MIPS lazy-binding stub for it. We can | |
8646 | only do this if all references to the function are through call | |
8647 | relocations, and in that case, the traditional lazy-binding stubs | |
8648 | are much more efficient than PLT entries. | |
8649 | ||
8650 | Traditional stubs are only available on SVR4 psABI-based systems; | |
8651 | VxWorks always uses PLTs instead. */ | |
8652 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
8653 | { |
8654 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 8655 | return TRUE; |
b49e97c9 TS |
8656 | |
8657 | /* If this symbol is not defined in a regular file, then set | |
8658 | the symbol to the stub location. This is required to make | |
8659 | function pointers compare as equal between the normal | |
8660 | executable and the shared library. */ | |
f5385ebf | 8661 | if (!h->def_regular) |
b49e97c9 | 8662 | { |
33bb52fb RS |
8663 | hmips->needs_lazy_stub = TRUE; |
8664 | htab->lazy_stub_count++; | |
b34976b6 | 8665 | return TRUE; |
b49e97c9 TS |
8666 | } |
8667 | } | |
861fb55a DJ |
8668 | /* As above, VxWorks requires PLT entries for externally-defined |
8669 | functions that are only accessed through call relocations. | |
b49e97c9 | 8670 | |
861fb55a DJ |
8671 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
8672 | are static-only relocations against an externally-defined function. | |
8673 | This can technically occur for shared libraries if there are | |
8674 | branches to the symbol, although it is unlikely that this will be | |
8675 | used in practice due to the short ranges involved. It can occur | |
8676 | for any relative or absolute relocation in executables; in that | |
8677 | case, the PLT entry becomes the function's canonical address. */ | |
8678 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
8679 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
8680 | && htab->use_plts_and_copy_relocs | |
8681 | && !SYMBOL_CALLS_LOCAL (info, h) | |
8682 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8683 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 8684 | { |
861fb55a DJ |
8685 | /* If this is the first symbol to need a PLT entry, allocate room |
8686 | for the header. */ | |
8687 | if (htab->splt->size == 0) | |
8688 | { | |
8689 | BFD_ASSERT (htab->sgotplt->size == 0); | |
0a44bf69 | 8690 | |
861fb55a DJ |
8691 | /* If we're using the PLT additions to the psABI, each PLT |
8692 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
8693 | Encourage better cache usage by aligning. We do this | |
8694 | lazily to avoid pessimizing traditional objects. */ | |
8695 | if (!htab->is_vxworks | |
8696 | && !bfd_set_section_alignment (dynobj, htab->splt, 5)) | |
8697 | return FALSE; | |
0a44bf69 | 8698 | |
861fb55a DJ |
8699 | /* Make sure that .got.plt is word-aligned. We do this lazily |
8700 | for the same reason as above. */ | |
8701 | if (!bfd_set_section_alignment (dynobj, htab->sgotplt, | |
8702 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
8703 | return FALSE; | |
0a44bf69 | 8704 | |
861fb55a | 8705 | htab->splt->size += htab->plt_header_size; |
0a44bf69 | 8706 | |
861fb55a DJ |
8707 | /* On non-VxWorks targets, the first two entries in .got.plt |
8708 | are reserved. */ | |
8709 | if (!htab->is_vxworks) | |
a44acb1e MR |
8710 | htab->sgotplt->size |
8711 | += get_elf_backend_data (dynobj)->got_header_size; | |
0a44bf69 | 8712 | |
861fb55a DJ |
8713 | /* On VxWorks, also allocate room for the header's |
8714 | .rela.plt.unloaded entries. */ | |
8715 | if (htab->is_vxworks && !info->shared) | |
0a44bf69 RS |
8716 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
8717 | } | |
8718 | ||
8719 | /* Assign the next .plt entry to this symbol. */ | |
8720 | h->plt.offset = htab->splt->size; | |
8721 | htab->splt->size += htab->plt_entry_size; | |
8722 | ||
8723 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 8724 | symbol's value to the address of the stub. */ |
131eb6b7 | 8725 | if (!info->shared && !h->def_regular) |
0a44bf69 RS |
8726 | { |
8727 | h->root.u.def.section = htab->splt; | |
8728 | h->root.u.def.value = h->plt.offset; | |
861fb55a DJ |
8729 | /* For VxWorks, point at the PLT load stub rather than the |
8730 | lazy resolution stub; this stub will become the canonical | |
8731 | function address. */ | |
8732 | if (htab->is_vxworks) | |
8733 | h->root.u.def.value += 8; | |
0a44bf69 RS |
8734 | } |
8735 | ||
861fb55a DJ |
8736 | /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT |
8737 | relocation. */ | |
8738 | htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj); | |
8739 | htab->srelplt->size += (htab->is_vxworks | |
8740 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
8741 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
8742 | |
8743 | /* Make room for the .rela.plt.unloaded relocations. */ | |
861fb55a | 8744 | if (htab->is_vxworks && !info->shared) |
0a44bf69 RS |
8745 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
8746 | ||
861fb55a DJ |
8747 | /* All relocations against this symbol that could have been made |
8748 | dynamic will now refer to the PLT entry instead. */ | |
8749 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 8750 | |
0a44bf69 RS |
8751 | return TRUE; |
8752 | } | |
8753 | ||
8754 | /* If this is a weak symbol, and there is a real definition, the | |
8755 | processor independent code will have arranged for us to see the | |
8756 | real definition first, and we can just use the same value. */ | |
8757 | if (h->u.weakdef != NULL) | |
8758 | { | |
8759 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
8760 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8761 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8762 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
8763 | return TRUE; | |
8764 | } | |
8765 | ||
861fb55a DJ |
8766 | /* Otherwise, there is nothing further to do for symbols defined |
8767 | in regular objects. */ | |
8768 | if (h->def_regular) | |
0a44bf69 RS |
8769 | return TRUE; |
8770 | ||
861fb55a DJ |
8771 | /* There's also nothing more to do if we'll convert all relocations |
8772 | against this symbol into dynamic relocations. */ | |
8773 | if (!hmips->has_static_relocs) | |
8774 | return TRUE; | |
8775 | ||
8776 | /* We're now relying on copy relocations. Complain if we have | |
8777 | some that we can't convert. */ | |
8778 | if (!htab->use_plts_and_copy_relocs || info->shared) | |
8779 | { | |
8780 | (*_bfd_error_handler) (_("non-dynamic relocations refer to " | |
8781 | "dynamic symbol %s"), | |
8782 | h->root.root.string); | |
8783 | bfd_set_error (bfd_error_bad_value); | |
8784 | return FALSE; | |
8785 | } | |
8786 | ||
0a44bf69 RS |
8787 | /* We must allocate the symbol in our .dynbss section, which will |
8788 | become part of the .bss section of the executable. There will be | |
8789 | an entry for this symbol in the .dynsym section. The dynamic | |
8790 | object will contain position independent code, so all references | |
8791 | from the dynamic object to this symbol will go through the global | |
8792 | offset table. The dynamic linker will use the .dynsym entry to | |
8793 | determine the address it must put in the global offset table, so | |
8794 | both the dynamic object and the regular object will refer to the | |
8795 | same memory location for the variable. */ | |
8796 | ||
8797 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
8798 | { | |
861fb55a DJ |
8799 | if (htab->is_vxworks) |
8800 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
8801 | else | |
8802 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
8803 | h->needs_copy = 1; |
8804 | } | |
8805 | ||
861fb55a DJ |
8806 | /* All relocations against this symbol that could have been made |
8807 | dynamic will now refer to the local copy instead. */ | |
8808 | hmips->possibly_dynamic_relocs = 0; | |
8809 | ||
027297b7 | 8810 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 8811 | } |
b49e97c9 TS |
8812 | \f |
8813 | /* This function is called after all the input files have been read, | |
8814 | and the input sections have been assigned to output sections. We | |
8815 | check for any mips16 stub sections that we can discard. */ | |
8816 | ||
b34976b6 | 8817 | bfd_boolean |
9719ad41 RS |
8818 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
8819 | struct bfd_link_info *info) | |
b49e97c9 TS |
8820 | { |
8821 | asection *ri; | |
0a44bf69 | 8822 | struct mips_elf_link_hash_table *htab; |
861fb55a | 8823 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
8824 | |
8825 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 8826 | BFD_ASSERT (htab != NULL); |
f4416af6 | 8827 | |
b49e97c9 TS |
8828 | /* The .reginfo section has a fixed size. */ |
8829 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8830 | if (ri != NULL) | |
9719ad41 | 8831 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 8832 | |
861fb55a DJ |
8833 | hti.info = info; |
8834 | hti.output_bfd = output_bfd; | |
8835 | hti.error = FALSE; | |
8836 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8837 | mips_elf_check_symbols, &hti); | |
8838 | if (hti.error) | |
8839 | return FALSE; | |
f4416af6 | 8840 | |
33bb52fb RS |
8841 | return TRUE; |
8842 | } | |
8843 | ||
8844 | /* If the link uses a GOT, lay it out and work out its size. */ | |
8845 | ||
8846 | static bfd_boolean | |
8847 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
8848 | { | |
8849 | bfd *dynobj; | |
8850 | asection *s; | |
8851 | struct mips_got_info *g; | |
33bb52fb RS |
8852 | bfd_size_type loadable_size = 0; |
8853 | bfd_size_type page_gotno; | |
8854 | bfd *sub; | |
8855 | struct mips_elf_count_tls_arg count_tls_arg; | |
8856 | struct mips_elf_link_hash_table *htab; | |
8857 | ||
8858 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8859 | BFD_ASSERT (htab != NULL); |
8860 | ||
a8028dd0 | 8861 | s = htab->sgot; |
f4416af6 | 8862 | if (s == NULL) |
b34976b6 | 8863 | return TRUE; |
b49e97c9 | 8864 | |
33bb52fb | 8865 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
8866 | g = htab->got_info; |
8867 | ||
861fb55a DJ |
8868 | /* Allocate room for the reserved entries. VxWorks always reserves |
8869 | 3 entries; other objects only reserve 2 entries. */ | |
8870 | BFD_ASSERT (g->assigned_gotno == 0); | |
8871 | if (htab->is_vxworks) | |
8872 | htab->reserved_gotno = 3; | |
8873 | else | |
8874 | htab->reserved_gotno = 2; | |
8875 | g->local_gotno += htab->reserved_gotno; | |
8876 | g->assigned_gotno = htab->reserved_gotno; | |
8877 | ||
33bb52fb RS |
8878 | /* Replace entries for indirect and warning symbols with entries for |
8879 | the target symbol. */ | |
8880 | if (!mips_elf_resolve_final_got_entries (g)) | |
8881 | return FALSE; | |
f4416af6 | 8882 | |
d4596a51 | 8883 | /* Count the number of GOT symbols. */ |
020d7251 | 8884 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 8885 | |
33bb52fb RS |
8886 | /* Calculate the total loadable size of the output. That |
8887 | will give us the maximum number of GOT_PAGE entries | |
8888 | required. */ | |
8889 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
8890 | { | |
8891 | asection *subsection; | |
5108fc1b | 8892 | |
33bb52fb RS |
8893 | for (subsection = sub->sections; |
8894 | subsection; | |
8895 | subsection = subsection->next) | |
8896 | { | |
8897 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8898 | continue; | |
8899 | loadable_size += ((subsection->size + 0xf) | |
8900 | &~ (bfd_size_type) 0xf); | |
8901 | } | |
8902 | } | |
f4416af6 | 8903 | |
0a44bf69 | 8904 | if (htab->is_vxworks) |
738e5348 | 8905 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
8906 | relocations against local symbols evaluate to "G", and the EABI does |
8907 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 8908 | page_gotno = 0; |
0a44bf69 RS |
8909 | else |
8910 | /* Assume there are two loadable segments consisting of contiguous | |
8911 | sections. Is 5 enough? */ | |
c224138d RS |
8912 | page_gotno = (loadable_size >> 16) + 5; |
8913 | ||
8914 | /* Choose the smaller of the two estimates; both are intended to be | |
8915 | conservative. */ | |
8916 | if (page_gotno > g->page_gotno) | |
8917 | page_gotno = g->page_gotno; | |
f4416af6 | 8918 | |
c224138d | 8919 | g->local_gotno += page_gotno; |
eea6121a | 8920 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
d4596a51 | 8921 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 | 8922 | |
0f20cc35 DJ |
8923 | /* We need to calculate tls_gotno for global symbols at this point |
8924 | instead of building it up earlier, to avoid doublecounting | |
8925 | entries for one global symbol from multiple input files. */ | |
8926 | count_tls_arg.info = info; | |
8927 | count_tls_arg.needed = 0; | |
8928 | elf_link_hash_traverse (elf_hash_table (info), | |
8929 | mips_elf_count_global_tls_entries, | |
8930 | &count_tls_arg); | |
8931 | g->tls_gotno += count_tls_arg.needed; | |
8932 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
8933 | ||
0a44bf69 RS |
8934 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
8935 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
8936 | dynamic loader. */ | |
33bb52fb RS |
8937 | if (htab->is_vxworks) |
8938 | { | |
8939 | /* VxWorks executables do not need a GOT. */ | |
8940 | if (info->shared) | |
8941 | { | |
8942 | /* Each VxWorks GOT entry needs an explicit relocation. */ | |
8943 | unsigned int count; | |
8944 | ||
861fb55a | 8945 | count = g->global_gotno + g->local_gotno - htab->reserved_gotno; |
33bb52fb RS |
8946 | if (count) |
8947 | mips_elf_allocate_dynamic_relocations (dynobj, info, count); | |
8948 | } | |
8949 | } | |
8950 | else if (s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 8951 | { |
a8028dd0 | 8952 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
8953 | return FALSE; |
8954 | } | |
8955 | else | |
8956 | { | |
33bb52fb RS |
8957 | struct mips_elf_count_tls_arg arg; |
8958 | ||
8959 | /* Set up TLS entries. */ | |
0f20cc35 DJ |
8960 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
8961 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
1fd20d70 RS |
8962 | BFD_ASSERT (g->tls_assigned_gotno |
8963 | == g->global_gotno + g->local_gotno + g->tls_gotno); | |
33bb52fb RS |
8964 | |
8965 | /* Allocate room for the TLS relocations. */ | |
8966 | arg.info = info; | |
8967 | arg.needed = 0; | |
8968 | htab_traverse (g->got_entries, mips_elf_count_local_tls_relocs, &arg); | |
8969 | elf_link_hash_traverse (elf_hash_table (info), | |
8970 | mips_elf_count_global_tls_relocs, | |
8971 | &arg); | |
8972 | if (arg.needed) | |
8973 | mips_elf_allocate_dynamic_relocations (dynobj, info, arg.needed); | |
0f20cc35 | 8974 | } |
b49e97c9 | 8975 | |
b34976b6 | 8976 | return TRUE; |
b49e97c9 TS |
8977 | } |
8978 | ||
33bb52fb RS |
8979 | /* Estimate the size of the .MIPS.stubs section. */ |
8980 | ||
8981 | static void | |
8982 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
8983 | { | |
8984 | struct mips_elf_link_hash_table *htab; | |
8985 | bfd_size_type dynsymcount; | |
8986 | ||
8987 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8988 | BFD_ASSERT (htab != NULL); |
8989 | ||
33bb52fb RS |
8990 | if (htab->lazy_stub_count == 0) |
8991 | return; | |
8992 | ||
8993 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
8994 | section, so add a dummy entry to the end. */ | |
8995 | htab->lazy_stub_count++; | |
8996 | ||
8997 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
8998 | At this point, dynsymcount does not account for section symbols | |
8999 | and count_section_dynsyms may overestimate the number that will | |
9000 | be needed. */ | |
9001 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
9002 | + count_section_dynsyms (output_bfd, info)); | |
9003 | ||
9004 | /* Determine the size of one stub entry. */ | |
9005 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9006 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
9007 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
9008 | ||
9009 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
9010 | } | |
9011 | ||
9012 | /* A mips_elf_link_hash_traverse callback for which DATA points to the | |
9013 | MIPS hash table. If H needs a traditional MIPS lazy-binding stub, | |
9014 | allocate an entry in the stubs section. */ | |
9015 | ||
9016 | static bfd_boolean | |
9017 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void **data) | |
9018 | { | |
9019 | struct mips_elf_link_hash_table *htab; | |
9020 | ||
9021 | htab = (struct mips_elf_link_hash_table *) data; | |
9022 | if (h->needs_lazy_stub) | |
9023 | { | |
9024 | h->root.root.u.def.section = htab->sstubs; | |
9025 | h->root.root.u.def.value = htab->sstubs->size; | |
9026 | h->root.plt.offset = htab->sstubs->size; | |
9027 | htab->sstubs->size += htab->function_stub_size; | |
9028 | } | |
9029 | return TRUE; | |
9030 | } | |
9031 | ||
9032 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
9033 | Set the final size of the .MIPS.stub section. */ | |
9034 | ||
9035 | static void | |
9036 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) | |
9037 | { | |
9038 | struct mips_elf_link_hash_table *htab; | |
9039 | ||
9040 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9041 | BFD_ASSERT (htab != NULL); |
9042 | ||
33bb52fb RS |
9043 | if (htab->lazy_stub_count == 0) |
9044 | return; | |
9045 | ||
9046 | htab->sstubs->size = 0; | |
4dfe6ac6 | 9047 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, htab); |
33bb52fb RS |
9048 | htab->sstubs->size += htab->function_stub_size; |
9049 | BFD_ASSERT (htab->sstubs->size | |
9050 | == htab->lazy_stub_count * htab->function_stub_size); | |
9051 | } | |
9052 | ||
b49e97c9 TS |
9053 | /* Set the sizes of the dynamic sections. */ |
9054 | ||
b34976b6 | 9055 | bfd_boolean |
9719ad41 RS |
9056 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
9057 | struct bfd_link_info *info) | |
b49e97c9 TS |
9058 | { |
9059 | bfd *dynobj; | |
861fb55a | 9060 | asection *s, *sreldyn; |
b34976b6 | 9061 | bfd_boolean reltext; |
0a44bf69 | 9062 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9063 | |
0a44bf69 | 9064 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9065 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
9066 | dynobj = elf_hash_table (info)->dynobj; |
9067 | BFD_ASSERT (dynobj != NULL); | |
9068 | ||
9069 | if (elf_hash_table (info)->dynamic_sections_created) | |
9070 | { | |
9071 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 9072 | if (info->executable) |
b49e97c9 | 9073 | { |
3d4d4302 | 9074 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 9075 | BFD_ASSERT (s != NULL); |
eea6121a | 9076 | s->size |
b49e97c9 TS |
9077 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
9078 | s->contents | |
9079 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
9080 | } | |
861fb55a DJ |
9081 | |
9082 | /* Create a symbol for the PLT, if we know that we are using it. */ | |
9083 | if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL) | |
9084 | { | |
9085 | struct elf_link_hash_entry *h; | |
9086 | ||
9087 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9088 | ||
9089 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt, | |
9090 | "_PROCEDURE_LINKAGE_TABLE_"); | |
9091 | htab->root.hplt = h; | |
9092 | if (h == NULL) | |
9093 | return FALSE; | |
9094 | h->type = STT_FUNC; | |
9095 | } | |
9096 | } | |
4e41d0d7 | 9097 | |
9a59ad6b | 9098 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 9099 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 9100 | |
33bb52fb RS |
9101 | mips_elf_estimate_stub_size (output_bfd, info); |
9102 | ||
9103 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
9104 | return FALSE; | |
9105 | ||
9106 | mips_elf_lay_out_lazy_stubs (info); | |
9107 | ||
b49e97c9 TS |
9108 | /* The check_relocs and adjust_dynamic_symbol entry points have |
9109 | determined the sizes of the various dynamic sections. Allocate | |
9110 | memory for them. */ | |
b34976b6 | 9111 | reltext = FALSE; |
b49e97c9 TS |
9112 | for (s = dynobj->sections; s != NULL; s = s->next) |
9113 | { | |
9114 | const char *name; | |
b49e97c9 TS |
9115 | |
9116 | /* It's OK to base decisions on the section name, because none | |
9117 | of the dynobj section names depend upon the input files. */ | |
9118 | name = bfd_get_section_name (dynobj, s); | |
9119 | ||
9120 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9121 | continue; | |
9122 | ||
0112cd26 | 9123 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 9124 | { |
c456f082 | 9125 | if (s->size != 0) |
b49e97c9 TS |
9126 | { |
9127 | const char *outname; | |
9128 | asection *target; | |
9129 | ||
9130 | /* If this relocation section applies to a read only | |
9131 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 9132 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
9133 | assert a DT_TEXTREL entry rather than testing whether |
9134 | there exists a relocation to a read only section or | |
9135 | not. */ | |
9136 | outname = bfd_get_section_name (output_bfd, | |
9137 | s->output_section); | |
9138 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
9139 | if ((target != NULL | |
9140 | && (target->flags & SEC_READONLY) != 0 | |
9141 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 9142 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 9143 | reltext = TRUE; |
b49e97c9 TS |
9144 | |
9145 | /* We use the reloc_count field as a counter if we need | |
9146 | to copy relocs into the output file. */ | |
0a44bf69 | 9147 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 9148 | s->reloc_count = 0; |
f4416af6 AO |
9149 | |
9150 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
9151 | sort relocations, but in a different way than we do, | |
9152 | and before we're done creating relocations. Also, it | |
9153 | will move them around between input sections' | |
9154 | relocation's contents, so our sorting would be | |
9155 | broken, so don't let it run. */ | |
9156 | info->combreloc = 0; | |
b49e97c9 TS |
9157 | } |
9158 | } | |
b49e97c9 TS |
9159 | else if (! info->shared |
9160 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 9161 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 9162 | { |
5108fc1b | 9163 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 9164 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 9165 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
9166 | } |
9167 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 9168 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 9169 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
861fb55a DJ |
9170 | else if (s == htab->splt) |
9171 | { | |
9172 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
9173 | room for an extra nop to fill the delay slot. This is |
9174 | for CPUs without load interlocking. */ | |
9175 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
9176 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
9177 | s->size += 4; |
9178 | } | |
0112cd26 | 9179 | else if (! CONST_STRNEQ (name, ".init") |
33bb52fb | 9180 | && s != htab->sgot |
0a44bf69 | 9181 | && s != htab->sgotplt |
861fb55a DJ |
9182 | && s != htab->sstubs |
9183 | && s != htab->sdynbss) | |
b49e97c9 TS |
9184 | { |
9185 | /* It's not one of our sections, so don't allocate space. */ | |
9186 | continue; | |
9187 | } | |
9188 | ||
c456f082 | 9189 | if (s->size == 0) |
b49e97c9 | 9190 | { |
8423293d | 9191 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
9192 | continue; |
9193 | } | |
9194 | ||
c456f082 AM |
9195 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
9196 | continue; | |
9197 | ||
b49e97c9 | 9198 | /* Allocate memory for the section contents. */ |
eea6121a | 9199 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 9200 | if (s->contents == NULL) |
b49e97c9 TS |
9201 | { |
9202 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 9203 | return FALSE; |
b49e97c9 TS |
9204 | } |
9205 | } | |
9206 | ||
9207 | if (elf_hash_table (info)->dynamic_sections_created) | |
9208 | { | |
9209 | /* Add some entries to the .dynamic section. We fill in the | |
9210 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
9211 | must add the entries now so that we get the correct size for | |
5750dcec | 9212 | the .dynamic section. */ |
af5978fb RS |
9213 | |
9214 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 9215 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
9216 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
9217 | may only look at the first one they see. */ | |
af5978fb RS |
9218 | if (!info->shared |
9219 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
9220 | return FALSE; | |
b49e97c9 | 9221 | |
5750dcec DJ |
9222 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
9223 | used by the debugger. */ | |
9224 | if (info->executable | |
9225 | && !SGI_COMPAT (output_bfd) | |
9226 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9227 | return FALSE; | |
9228 | ||
0a44bf69 | 9229 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
9230 | info->flags |= DF_TEXTREL; |
9231 | ||
9232 | if ((info->flags & DF_TEXTREL) != 0) | |
9233 | { | |
9234 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 9235 | return FALSE; |
943284cc DJ |
9236 | |
9237 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
9238 | write out an actual text relocation; we may not, because | |
9239 | at this point we do not know whether e.g. any .eh_frame | |
9240 | absolute relocations have been converted to PC-relative. */ | |
9241 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
9242 | } |
9243 | ||
9244 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 9245 | return FALSE; |
b49e97c9 | 9246 | |
861fb55a | 9247 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 9248 | if (htab->is_vxworks) |
b49e97c9 | 9249 | { |
0a44bf69 RS |
9250 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
9251 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 9252 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9253 | { |
9254 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
9255 | return FALSE; | |
b49e97c9 | 9256 | |
0a44bf69 RS |
9257 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
9258 | return FALSE; | |
b49e97c9 | 9259 | |
0a44bf69 RS |
9260 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
9261 | return FALSE; | |
9262 | } | |
b49e97c9 | 9263 | } |
0a44bf69 RS |
9264 | else |
9265 | { | |
861fb55a | 9266 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9267 | { |
9268 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
9269 | return FALSE; | |
b49e97c9 | 9270 | |
0a44bf69 RS |
9271 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
9272 | return FALSE; | |
b49e97c9 | 9273 | |
0a44bf69 RS |
9274 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
9275 | return FALSE; | |
9276 | } | |
b49e97c9 | 9277 | |
0a44bf69 RS |
9278 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
9279 | return FALSE; | |
b49e97c9 | 9280 | |
0a44bf69 RS |
9281 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
9282 | return FALSE; | |
b49e97c9 | 9283 | |
0a44bf69 RS |
9284 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
9285 | return FALSE; | |
b49e97c9 | 9286 | |
0a44bf69 RS |
9287 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
9288 | return FALSE; | |
b49e97c9 | 9289 | |
0a44bf69 RS |
9290 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
9291 | return FALSE; | |
b49e97c9 | 9292 | |
0a44bf69 RS |
9293 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
9294 | return FALSE; | |
b49e97c9 | 9295 | |
0a44bf69 RS |
9296 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
9297 | return FALSE; | |
9298 | ||
9299 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
9300 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
9301 | return FALSE; | |
9302 | ||
9303 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
9304 | && (bfd_get_section_by_name | |
af0edeb8 | 9305 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 RS |
9306 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
9307 | return FALSE; | |
9308 | } | |
861fb55a DJ |
9309 | if (htab->splt->size > 0) |
9310 | { | |
9311 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
9312 | return FALSE; | |
9313 | ||
9314 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
9315 | return FALSE; | |
9316 | ||
9317 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
9318 | return FALSE; | |
9319 | ||
9320 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
9321 | return FALSE; | |
9322 | } | |
7a2b07ff NS |
9323 | if (htab->is_vxworks |
9324 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
9325 | return FALSE; | |
b49e97c9 TS |
9326 | } |
9327 | ||
b34976b6 | 9328 | return TRUE; |
b49e97c9 TS |
9329 | } |
9330 | \f | |
81d43bff RS |
9331 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
9332 | Adjust its R_ADDEND field so that it is correct for the output file. | |
9333 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
9334 | and sections respectively; both use symbol indexes. */ | |
9335 | ||
9336 | static void | |
9337 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
9338 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
9339 | asection **local_sections, Elf_Internal_Rela *rel) | |
9340 | { | |
9341 | unsigned int r_type, r_symndx; | |
9342 | Elf_Internal_Sym *sym; | |
9343 | asection *sec; | |
9344 | ||
020d7251 | 9345 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
9346 | { |
9347 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 9348 | if (gprel16_reloc_p (r_type) |
81d43bff | 9349 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 9350 | || literal_reloc_p (r_type)) |
81d43bff RS |
9351 | { |
9352 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
9353 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
9354 | } | |
9355 | ||
9356 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
9357 | sym = local_syms + r_symndx; | |
9358 | ||
9359 | /* Adjust REL's addend to account for section merging. */ | |
9360 | if (!info->relocatable) | |
9361 | { | |
9362 | sec = local_sections[r_symndx]; | |
9363 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
9364 | } | |
9365 | ||
9366 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
9367 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9368 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
9369 | } | |
9370 | } | |
9371 | ||
545fd46b MR |
9372 | /* Handle relocations against symbols from removed linkonce sections, |
9373 | or sections discarded by a linker script. We use this wrapper around | |
9374 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
9375 | on 64-bit ELF targets. In this case for any relocation handled, which | |
9376 | always be the first in a triplet, the remaining two have to be processed | |
9377 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
9378 | index referred by the first reloc that applies to all the three and the | |
9379 | remaining two never refer to an object symbol. And it is the final | |
9380 | relocation (the last non-null one) that determines the output field of | |
9381 | the whole relocation so retrieve the corresponding howto structure for | |
9382 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
9383 | ||
9384 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
9385 | and therefore requires to be pasted in a loop. It also defines a block | |
9386 | and does not protect any of its arguments, hence the extra brackets. */ | |
9387 | ||
9388 | static void | |
9389 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
9390 | struct bfd_link_info *info, | |
9391 | bfd *input_bfd, asection *input_section, | |
9392 | Elf_Internal_Rela **rel, | |
9393 | const Elf_Internal_Rela **relend, | |
9394 | bfd_boolean rel_reloc, | |
9395 | reloc_howto_type *howto, | |
9396 | bfd_byte *contents) | |
9397 | { | |
9398 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
9399 | int count = bed->s->int_rels_per_ext_rel; | |
9400 | unsigned int r_type; | |
9401 | int i; | |
9402 | ||
9403 | for (i = count - 1; i > 0; i--) | |
9404 | { | |
9405 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
9406 | if (r_type != R_MIPS_NONE) | |
9407 | { | |
9408 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
9409 | break; | |
9410 | } | |
9411 | } | |
9412 | do | |
9413 | { | |
9414 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
9415 | (*rel), count, (*relend), | |
9416 | howto, i, contents); | |
9417 | } | |
9418 | while (0); | |
9419 | } | |
9420 | ||
b49e97c9 TS |
9421 | /* Relocate a MIPS ELF section. */ |
9422 | ||
b34976b6 | 9423 | bfd_boolean |
9719ad41 RS |
9424 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
9425 | bfd *input_bfd, asection *input_section, | |
9426 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
9427 | Elf_Internal_Sym *local_syms, | |
9428 | asection **local_sections) | |
b49e97c9 TS |
9429 | { |
9430 | Elf_Internal_Rela *rel; | |
9431 | const Elf_Internal_Rela *relend; | |
9432 | bfd_vma addend = 0; | |
b34976b6 | 9433 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 9434 | const struct elf_backend_data *bed; |
b49e97c9 TS |
9435 | |
9436 | bed = get_elf_backend_data (output_bfd); | |
9437 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
9438 | for (rel = relocs; rel < relend; ++rel) | |
9439 | { | |
9440 | const char *name; | |
c9adbffe | 9441 | bfd_vma value = 0; |
b49e97c9 | 9442 | reloc_howto_type *howto; |
38a7df63 | 9443 | bfd_boolean cross_mode_jump_p; |
b34976b6 | 9444 | /* TRUE if the relocation is a RELA relocation, rather than a |
b49e97c9 | 9445 | REL relocation. */ |
b34976b6 | 9446 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 9447 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 9448 | const char *msg; |
ab96bf03 AM |
9449 | unsigned long r_symndx; |
9450 | asection *sec; | |
749b8d9d L |
9451 | Elf_Internal_Shdr *symtab_hdr; |
9452 | struct elf_link_hash_entry *h; | |
d4730f92 | 9453 | bfd_boolean rel_reloc; |
b49e97c9 | 9454 | |
d4730f92 BS |
9455 | rel_reloc = (NEWABI_P (input_bfd) |
9456 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
9457 | relocs, rel)); | |
b49e97c9 | 9458 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 9459 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
9460 | |
9461 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 9462 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 9463 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
9464 | { |
9465 | sec = local_sections[r_symndx]; | |
9466 | h = NULL; | |
9467 | } | |
ab96bf03 AM |
9468 | else |
9469 | { | |
ab96bf03 | 9470 | unsigned long extsymoff; |
ab96bf03 | 9471 | |
ab96bf03 AM |
9472 | extsymoff = 0; |
9473 | if (!elf_bad_symtab (input_bfd)) | |
9474 | extsymoff = symtab_hdr->sh_info; | |
9475 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
9476 | while (h->root.type == bfd_link_hash_indirect | |
9477 | || h->root.type == bfd_link_hash_warning) | |
9478 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9479 | ||
9480 | sec = NULL; | |
9481 | if (h->root.type == bfd_link_hash_defined | |
9482 | || h->root.type == bfd_link_hash_defweak) | |
9483 | sec = h->root.u.def.section; | |
9484 | } | |
9485 | ||
dbaa2011 | 9486 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
9487 | { |
9488 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
9489 | input_section, &rel, &relend, | |
9490 | rel_reloc, howto, contents); | |
9491 | continue; | |
9492 | } | |
ab96bf03 | 9493 | |
4a14403c | 9494 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
9495 | { |
9496 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
9497 | 64-bit code, but make sure all their addresses are in the | |
9498 | lowermost or uppermost 32-bit section of the 64-bit address | |
9499 | space. Thus, when they use an R_MIPS_64 they mean what is | |
9500 | usually meant by R_MIPS_32, with the exception that the | |
9501 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 9502 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
9503 | |
9504 | /* On big-endian systems, we need to lie about the position | |
9505 | of the reloc. */ | |
9506 | if (bfd_big_endian (input_bfd)) | |
9507 | rel->r_offset += 4; | |
9508 | } | |
b49e97c9 TS |
9509 | |
9510 | if (!use_saved_addend_p) | |
9511 | { | |
b49e97c9 TS |
9512 | /* If these relocations were originally of the REL variety, |
9513 | we must pull the addend out of the field that will be | |
9514 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
9515 | RELA relocation. */ |
9516 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
9517 | relocs, rel)) | |
b49e97c9 | 9518 | { |
b34976b6 | 9519 | rela_relocation_p = FALSE; |
c224138d RS |
9520 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
9521 | howto, contents); | |
738e5348 RS |
9522 | if (hi16_reloc_p (r_type) |
9523 | || (got16_reloc_p (r_type) | |
b49e97c9 | 9524 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 9525 | local_sections))) |
b49e97c9 | 9526 | { |
c224138d RS |
9527 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
9528 | contents, &addend)) | |
749b8d9d | 9529 | { |
749b8d9d L |
9530 | if (h) |
9531 | name = h->root.root.string; | |
9532 | else | |
9533 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
9534 | local_syms + r_symndx, | |
9535 | sec); | |
9536 | (*_bfd_error_handler) | |
9537 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
9538 | input_bfd, input_section, name, howto->name, | |
9539 | rel->r_offset); | |
749b8d9d | 9540 | } |
b49e97c9 | 9541 | } |
30ac9238 RS |
9542 | else |
9543 | addend <<= howto->rightshift; | |
b49e97c9 TS |
9544 | } |
9545 | else | |
9546 | addend = rel->r_addend; | |
81d43bff RS |
9547 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
9548 | local_syms, local_sections, rel); | |
b49e97c9 TS |
9549 | } |
9550 | ||
1049f94e | 9551 | if (info->relocatable) |
b49e97c9 | 9552 | { |
4a14403c | 9553 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
9554 | && bfd_big_endian (input_bfd)) |
9555 | rel->r_offset -= 4; | |
9556 | ||
81d43bff | 9557 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 9558 | { |
81d43bff | 9559 | addend += rel->r_addend; |
738e5348 | 9560 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
9561 | addend = mips_elf_high (addend); |
9562 | else if (r_type == R_MIPS_HIGHER) | |
9563 | addend = mips_elf_higher (addend); | |
9564 | else if (r_type == R_MIPS_HIGHEST) | |
9565 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
9566 | else |
9567 | addend >>= howto->rightshift; | |
b49e97c9 | 9568 | |
30ac9238 RS |
9569 | /* We use the source mask, rather than the destination |
9570 | mask because the place to which we are writing will be | |
9571 | source of the addend in the final link. */ | |
b49e97c9 TS |
9572 | addend &= howto->src_mask; |
9573 | ||
5a659663 | 9574 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9575 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9576 | ABI. Here, we need to update the addend. It would be | |
9577 | possible to get away with just using the R_MIPS_32 reloc | |
9578 | but for endianness. */ | |
9579 | { | |
9580 | bfd_vma sign_bits; | |
9581 | bfd_vma low_bits; | |
9582 | bfd_vma high_bits; | |
9583 | ||
9584 | if (addend & ((bfd_vma) 1 << 31)) | |
9585 | #ifdef BFD64 | |
9586 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9587 | #else | |
9588 | sign_bits = -1; | |
9589 | #endif | |
9590 | else | |
9591 | sign_bits = 0; | |
9592 | ||
9593 | /* If we don't know that we have a 64-bit type, | |
9594 | do two separate stores. */ | |
9595 | if (bfd_big_endian (input_bfd)) | |
9596 | { | |
9597 | /* Store the sign-bits (which are most significant) | |
9598 | first. */ | |
9599 | low_bits = sign_bits; | |
9600 | high_bits = addend; | |
9601 | } | |
9602 | else | |
9603 | { | |
9604 | low_bits = addend; | |
9605 | high_bits = sign_bits; | |
9606 | } | |
9607 | bfd_put_32 (input_bfd, low_bits, | |
9608 | contents + rel->r_offset); | |
9609 | bfd_put_32 (input_bfd, high_bits, | |
9610 | contents + rel->r_offset + 4); | |
9611 | continue; | |
9612 | } | |
9613 | ||
9614 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
9615 | input_bfd, input_section, | |
b34976b6 AM |
9616 | contents, FALSE)) |
9617 | return FALSE; | |
b49e97c9 TS |
9618 | } |
9619 | ||
9620 | /* Go on to the next relocation. */ | |
9621 | continue; | |
9622 | } | |
9623 | ||
9624 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
9625 | relocations for the same offset. In that case we are | |
9626 | supposed to treat the output of each relocation as the addend | |
9627 | for the next. */ | |
9628 | if (rel + 1 < relend | |
9629 | && rel->r_offset == rel[1].r_offset | |
9630 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 9631 | use_saved_addend_p = TRUE; |
b49e97c9 | 9632 | else |
b34976b6 | 9633 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
9634 | |
9635 | /* Figure out what value we are supposed to relocate. */ | |
9636 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
9637 | input_section, info, rel, | |
9638 | addend, howto, local_syms, | |
9639 | local_sections, &value, | |
38a7df63 | 9640 | &name, &cross_mode_jump_p, |
bce03d3d | 9641 | use_saved_addend_p)) |
b49e97c9 TS |
9642 | { |
9643 | case bfd_reloc_continue: | |
9644 | /* There's nothing to do. */ | |
9645 | continue; | |
9646 | ||
9647 | case bfd_reloc_undefined: | |
9648 | /* mips_elf_calculate_relocation already called the | |
9649 | undefined_symbol callback. There's no real point in | |
9650 | trying to perform the relocation at this point, so we | |
9651 | just skip ahead to the next relocation. */ | |
9652 | continue; | |
9653 | ||
9654 | case bfd_reloc_notsupported: | |
9655 | msg = _("internal error: unsupported relocation error"); | |
9656 | info->callbacks->warning | |
9657 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 9658 | return FALSE; |
b49e97c9 TS |
9659 | |
9660 | case bfd_reloc_overflow: | |
9661 | if (use_saved_addend_p) | |
9662 | /* Ignore overflow until we reach the last relocation for | |
9663 | a given location. */ | |
9664 | ; | |
9665 | else | |
9666 | { | |
0e53d9da AN |
9667 | struct mips_elf_link_hash_table *htab; |
9668 | ||
9669 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9670 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9671 | BFD_ASSERT (name != NULL); |
0e53d9da | 9672 | if (!htab->small_data_overflow_reported |
9684f078 | 9673 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 9674 | || literal_reloc_p (howto->type))) |
0e53d9da | 9675 | { |
91d6fa6a NC |
9676 | msg = _("small-data section exceeds 64KB;" |
9677 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
9678 | |
9679 | htab->small_data_overflow_reported = TRUE; | |
9680 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
9681 | } | |
b49e97c9 | 9682 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 9683 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 9684 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9685 | return FALSE; |
b49e97c9 TS |
9686 | } |
9687 | break; | |
9688 | ||
9689 | case bfd_reloc_ok: | |
9690 | break; | |
9691 | ||
df58fc94 RS |
9692 | case bfd_reloc_outofrange: |
9693 | if (jal_reloc_p (howto->type)) | |
9694 | { | |
9695 | msg = _("JALX to a non-word-aligned address"); | |
9696 | info->callbacks->warning | |
9697 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
9698 | return FALSE; | |
9699 | } | |
9700 | /* Fall through. */ | |
9701 | ||
b49e97c9 TS |
9702 | default: |
9703 | abort (); | |
9704 | break; | |
9705 | } | |
9706 | ||
9707 | /* If we've got another relocation for the address, keep going | |
9708 | until we reach the last one. */ | |
9709 | if (use_saved_addend_p) | |
9710 | { | |
9711 | addend = value; | |
9712 | continue; | |
9713 | } | |
9714 | ||
4a14403c | 9715 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9716 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9717 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
9718 | that calculated the right value. Now, however, we | |
9719 | sign-extend the 32-bit result to 64-bits, and store it as a | |
9720 | 64-bit value. We are especially generous here in that we | |
9721 | go to extreme lengths to support this usage on systems with | |
9722 | only a 32-bit VMA. */ | |
9723 | { | |
9724 | bfd_vma sign_bits; | |
9725 | bfd_vma low_bits; | |
9726 | bfd_vma high_bits; | |
9727 | ||
9728 | if (value & ((bfd_vma) 1 << 31)) | |
9729 | #ifdef BFD64 | |
9730 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9731 | #else | |
9732 | sign_bits = -1; | |
9733 | #endif | |
9734 | else | |
9735 | sign_bits = 0; | |
9736 | ||
9737 | /* If we don't know that we have a 64-bit type, | |
9738 | do two separate stores. */ | |
9739 | if (bfd_big_endian (input_bfd)) | |
9740 | { | |
9741 | /* Undo what we did above. */ | |
9742 | rel->r_offset -= 4; | |
9743 | /* Store the sign-bits (which are most significant) | |
9744 | first. */ | |
9745 | low_bits = sign_bits; | |
9746 | high_bits = value; | |
9747 | } | |
9748 | else | |
9749 | { | |
9750 | low_bits = value; | |
9751 | high_bits = sign_bits; | |
9752 | } | |
9753 | bfd_put_32 (input_bfd, low_bits, | |
9754 | contents + rel->r_offset); | |
9755 | bfd_put_32 (input_bfd, high_bits, | |
9756 | contents + rel->r_offset + 4); | |
9757 | continue; | |
9758 | } | |
9759 | ||
9760 | /* Actually perform the relocation. */ | |
9761 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
9762 | input_bfd, input_section, | |
38a7df63 | 9763 | contents, cross_mode_jump_p)) |
b34976b6 | 9764 | return FALSE; |
b49e97c9 TS |
9765 | } |
9766 | ||
b34976b6 | 9767 | return TRUE; |
b49e97c9 TS |
9768 | } |
9769 | \f | |
861fb55a DJ |
9770 | /* A function that iterates over each entry in la25_stubs and fills |
9771 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
9772 | ||
9773 | static int | |
9774 | mips_elf_create_la25_stub (void **slot, void *data) | |
9775 | { | |
9776 | struct mips_htab_traverse_info *hti; | |
9777 | struct mips_elf_link_hash_table *htab; | |
9778 | struct mips_elf_la25_stub *stub; | |
9779 | asection *s; | |
9780 | bfd_byte *loc; | |
9781 | bfd_vma offset, target, target_high, target_low; | |
9782 | ||
9783 | stub = (struct mips_elf_la25_stub *) *slot; | |
9784 | hti = (struct mips_htab_traverse_info *) data; | |
9785 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 9786 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
9787 | |
9788 | /* Create the section contents, if we haven't already. */ | |
9789 | s = stub->stub_section; | |
9790 | loc = s->contents; | |
9791 | if (loc == NULL) | |
9792 | { | |
9793 | loc = bfd_malloc (s->size); | |
9794 | if (loc == NULL) | |
9795 | { | |
9796 | hti->error = TRUE; | |
9797 | return FALSE; | |
9798 | } | |
9799 | s->contents = loc; | |
9800 | } | |
9801 | ||
9802 | /* Work out where in the section this stub should go. */ | |
9803 | offset = stub->offset; | |
9804 | ||
9805 | /* Work out the target address. */ | |
8f0c309a CLT |
9806 | target = mips_elf_get_la25_target (stub, &s); |
9807 | target += s->output_section->vma + s->output_offset; | |
9808 | ||
861fb55a DJ |
9809 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
9810 | target_low = (target & 0xffff); | |
9811 | ||
9812 | if (stub->stub_section != htab->strampoline) | |
9813 | { | |
df58fc94 | 9814 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
9815 | of the section and write the two instructions at the end. */ |
9816 | memset (loc, 0, offset); | |
9817 | loc += offset; | |
df58fc94 RS |
9818 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9819 | { | |
d21911ea MR |
9820 | bfd_put_micromips_32 (hti->output_bfd, |
9821 | LA25_LUI_MICROMIPS (target_high), | |
9822 | loc); | |
9823 | bfd_put_micromips_32 (hti->output_bfd, | |
9824 | LA25_ADDIU_MICROMIPS (target_low), | |
9825 | loc + 4); | |
df58fc94 RS |
9826 | } |
9827 | else | |
9828 | { | |
9829 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9830 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
9831 | } | |
861fb55a DJ |
9832 | } |
9833 | else | |
9834 | { | |
9835 | /* This is trampoline. */ | |
9836 | loc += offset; | |
df58fc94 RS |
9837 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9838 | { | |
d21911ea MR |
9839 | bfd_put_micromips_32 (hti->output_bfd, |
9840 | LA25_LUI_MICROMIPS (target_high), loc); | |
9841 | bfd_put_micromips_32 (hti->output_bfd, | |
9842 | LA25_J_MICROMIPS (target), loc + 4); | |
9843 | bfd_put_micromips_32 (hti->output_bfd, | |
9844 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
9845 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
9846 | } | |
9847 | else | |
9848 | { | |
9849 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9850 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
9851 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
9852 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
9853 | } | |
861fb55a DJ |
9854 | } |
9855 | return TRUE; | |
9856 | } | |
9857 | ||
b49e97c9 TS |
9858 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9859 | adjust it appropriately now. */ | |
9860 | ||
9861 | static void | |
9719ad41 RS |
9862 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
9863 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9864 | { |
9865 | /* The linker script takes care of providing names and values for | |
9866 | these, but we must place them into the right sections. */ | |
9867 | static const char* const text_section_symbols[] = { | |
9868 | "_ftext", | |
9869 | "_etext", | |
9870 | "__dso_displacement", | |
9871 | "__elf_header", | |
9872 | "__program_header_table", | |
9873 | NULL | |
9874 | }; | |
9875 | ||
9876 | static const char* const data_section_symbols[] = { | |
9877 | "_fdata", | |
9878 | "_edata", | |
9879 | "_end", | |
9880 | "_fbss", | |
9881 | NULL | |
9882 | }; | |
9883 | ||
9884 | const char* const *p; | |
9885 | int i; | |
9886 | ||
9887 | for (i = 0; i < 2; ++i) | |
9888 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
9889 | *p; | |
9890 | ++p) | |
9891 | if (strcmp (*p, name) == 0) | |
9892 | { | |
9893 | /* All of these symbols are given type STT_SECTION by the | |
9894 | IRIX6 linker. */ | |
9895 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 9896 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
9897 | |
9898 | /* The IRIX linker puts these symbols in special sections. */ | |
9899 | if (i == 0) | |
9900 | sym->st_shndx = SHN_MIPS_TEXT; | |
9901 | else | |
9902 | sym->st_shndx = SHN_MIPS_DATA; | |
9903 | ||
9904 | break; | |
9905 | } | |
9906 | } | |
9907 | ||
9908 | /* Finish up dynamic symbol handling. We set the contents of various | |
9909 | dynamic sections here. */ | |
9910 | ||
b34976b6 | 9911 | bfd_boolean |
9719ad41 RS |
9912 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
9913 | struct bfd_link_info *info, | |
9914 | struct elf_link_hash_entry *h, | |
9915 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9916 | { |
9917 | bfd *dynobj; | |
b49e97c9 | 9918 | asection *sgot; |
f4416af6 | 9919 | struct mips_got_info *g, *gg; |
b49e97c9 | 9920 | const char *name; |
3d6746ca | 9921 | int idx; |
5108fc1b | 9922 | struct mips_elf_link_hash_table *htab; |
738e5348 | 9923 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 9924 | |
5108fc1b | 9925 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9926 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9927 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 9928 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9929 | |
861fb55a DJ |
9930 | BFD_ASSERT (!htab->is_vxworks); |
9931 | ||
9932 | if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub) | |
9933 | { | |
9934 | /* We've decided to create a PLT entry for this symbol. */ | |
9935 | bfd_byte *loc; | |
9936 | bfd_vma header_address, plt_index, got_address; | |
9937 | bfd_vma got_address_high, got_address_low, load; | |
9938 | const bfd_vma *plt_entry; | |
9939 | ||
9940 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9941 | BFD_ASSERT (h->dynindx != -1); | |
9942 | BFD_ASSERT (htab->splt != NULL); | |
9943 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9944 | BFD_ASSERT (!h->def_regular); | |
9945 | ||
9946 | /* Calculate the address of the PLT header. */ | |
9947 | header_address = (htab->splt->output_section->vma | |
9948 | + htab->splt->output_offset); | |
9949 | ||
9950 | /* Calculate the index of the entry. */ | |
9951 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9952 | / htab->plt_entry_size); | |
9953 | ||
9954 | /* Calculate the address of the .got.plt entry. */ | |
9955 | got_address = (htab->sgotplt->output_section->vma | |
9956 | + htab->sgotplt->output_offset | |
9957 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9958 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9959 | got_address_low = got_address & 0xffff; | |
9960 | ||
9961 | /* Initially point the .got.plt entry at the PLT header. */ | |
9962 | loc = (htab->sgotplt->contents | |
9963 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9964 | if (ABI_64_P (output_bfd)) | |
9965 | bfd_put_64 (output_bfd, header_address, loc); | |
9966 | else | |
9967 | bfd_put_32 (output_bfd, header_address, loc); | |
9968 | ||
9969 | /* Find out where the .plt entry should go. */ | |
9970 | loc = htab->splt->contents + h->plt.offset; | |
9971 | ||
9972 | /* Pick the load opcode. */ | |
9973 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
9974 | ||
9975 | /* Fill in the PLT entry itself. */ | |
9976 | plt_entry = mips_exec_plt_entry; | |
9977 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); | |
9978 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4); | |
6d30f5b2 NC |
9979 | |
9980 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
9981 | { | |
9982 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
9983 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9984 | } | |
9985 | else | |
9986 | { | |
9987 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
9988 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12); | |
9989 | } | |
861fb55a DJ |
9990 | |
9991 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9992 | mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt, | |
9993 | plt_index, h->dynindx, | |
9994 | R_MIPS_JUMP_SLOT, got_address); | |
9995 | ||
9996 | /* We distinguish between PLT entries and lazy-binding stubs by | |
9997 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
9998 | flag and leave the value if there are any relocations in the | |
9999 | binary where pointer equality matters. */ | |
10000 | sym->st_shndx = SHN_UNDEF; | |
10001 | if (h->pointer_equality_needed) | |
10002 | sym->st_other = STO_MIPS_PLT; | |
10003 | else | |
10004 | sym->st_value = 0; | |
10005 | } | |
10006 | else if (h->plt.offset != MINUS_ONE) | |
b49e97c9 | 10007 | { |
861fb55a | 10008 | /* We've decided to create a lazy-binding stub. */ |
5108fc1b | 10009 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
10010 | |
10011 | /* This symbol has a stub. Set it up. */ | |
10012 | ||
10013 | BFD_ASSERT (h->dynindx != -1); | |
10014 | ||
5108fc1b RS |
10015 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
10016 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
10017 | |
10018 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
10019 | sign extension at runtime in the stub, resulting in a negative |
10020 | index value. */ | |
10021 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 10022 | return FALSE; |
b49e97c9 TS |
10023 | |
10024 | /* Fill the stub. */ | |
3d6746ca DD |
10025 | idx = 0; |
10026 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
10027 | idx += 4; | |
10028 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
10029 | idx += 4; | |
5108fc1b | 10030 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 10031 | { |
5108fc1b | 10032 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
10033 | stub + idx); |
10034 | idx += 4; | |
10035 | } | |
10036 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
10037 | idx += 4; | |
b49e97c9 | 10038 | |
3d6746ca DD |
10039 | /* If a large stub is not required and sign extension is not a |
10040 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
10041 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
10042 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
10043 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
10044 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
10045 | else | |
5108fc1b RS |
10046 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
10047 | stub + idx); | |
10048 | ||
4e41d0d7 RS |
10049 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
10050 | memcpy (htab->sstubs->contents + h->plt.offset, | |
10051 | stub, htab->function_stub_size); | |
b49e97c9 TS |
10052 | |
10053 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
10054 | only for the referenced symbol. */ | |
10055 | sym->st_shndx = SHN_UNDEF; | |
10056 | ||
10057 | /* The run-time linker uses the st_value field of the symbol | |
10058 | to reset the global offset table entry for this external | |
10059 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
10060 | sym->st_value = (htab->sstubs->output_section->vma |
10061 | + htab->sstubs->output_offset | |
c5ae1840 | 10062 | + h->plt.offset); |
b49e97c9 TS |
10063 | } |
10064 | ||
738e5348 RS |
10065 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
10066 | refer to the stub, since only the stub uses the standard calling | |
10067 | conventions. */ | |
10068 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
10069 | { | |
10070 | BFD_ASSERT (hmips->need_fn_stub); | |
10071 | sym->st_value = (hmips->fn_stub->output_section->vma | |
10072 | + hmips->fn_stub->output_offset); | |
10073 | sym->st_size = hmips->fn_stub->size; | |
10074 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
10075 | } | |
10076 | ||
b49e97c9 | 10077 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 10078 | || h->forced_local); |
b49e97c9 | 10079 | |
23cc69b6 | 10080 | sgot = htab->sgot; |
a8028dd0 | 10081 | g = htab->got_info; |
b49e97c9 TS |
10082 | BFD_ASSERT (g != NULL); |
10083 | ||
10084 | /* Run through the global symbol table, creating GOT entries for all | |
10085 | the symbols that need them. */ | |
020d7251 | 10086 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
10087 | { |
10088 | bfd_vma offset; | |
10089 | bfd_vma value; | |
10090 | ||
6eaa6adc | 10091 | value = sym->st_value; |
738e5348 RS |
10092 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, |
10093 | R_MIPS_GOT16, info); | |
b49e97c9 TS |
10094 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
10095 | } | |
10096 | ||
020d7251 | 10097 | if (hmips->global_got_area != GGA_NONE && g->next && h->type != STT_TLS) |
f4416af6 AO |
10098 | { |
10099 | struct mips_got_entry e, *p; | |
0626d451 | 10100 | bfd_vma entry; |
f4416af6 | 10101 | bfd_vma offset; |
f4416af6 AO |
10102 | |
10103 | gg = g; | |
10104 | ||
10105 | e.abfd = output_bfd; | |
10106 | e.symndx = -1; | |
738e5348 | 10107 | e.d.h = hmips; |
0f20cc35 | 10108 | e.tls_type = 0; |
143d77c5 | 10109 | |
f4416af6 AO |
10110 | for (g = g->next; g->next != gg; g = g->next) |
10111 | { | |
10112 | if (g->got_entries | |
10113 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
10114 | &e))) | |
10115 | { | |
10116 | offset = p->gotidx; | |
0626d451 RS |
10117 | if (info->shared |
10118 | || (elf_hash_table (info)->dynamic_sections_created | |
10119 | && p->d.h != NULL | |
f5385ebf AM |
10120 | && p->d.h->root.def_dynamic |
10121 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
10122 | { |
10123 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
10124 | the various compatibility problems, it's easier to mock | |
10125 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
10126 | mips_elf_create_dynamic_relocation to calculate the | |
10127 | appropriate addend. */ | |
10128 | Elf_Internal_Rela rel[3]; | |
10129 | ||
10130 | memset (rel, 0, sizeof (rel)); | |
10131 | if (ABI_64_P (output_bfd)) | |
10132 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
10133 | else | |
10134 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
10135 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
10136 | ||
10137 | entry = 0; | |
10138 | if (! (mips_elf_create_dynamic_relocation | |
10139 | (output_bfd, info, rel, | |
10140 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
10141 | return FALSE; | |
10142 | } | |
10143 | else | |
10144 | entry = sym->st_value; | |
10145 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
10146 | } |
10147 | } | |
10148 | } | |
10149 | ||
b49e97c9 TS |
10150 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
10151 | name = h->root.root.string; | |
9637f6ef | 10152 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 10153 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
10154 | sym->st_shndx = SHN_ABS; |
10155 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
10156 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
10157 | { | |
10158 | sym->st_shndx = SHN_ABS; | |
10159 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10160 | sym->st_value = 1; | |
10161 | } | |
4a14403c | 10162 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10163 | { |
10164 | sym->st_shndx = SHN_ABS; | |
10165 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10166 | sym->st_value = elf_gp (output_bfd); | |
10167 | } | |
10168 | else if (SGI_COMPAT (output_bfd)) | |
10169 | { | |
10170 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
10171 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
10172 | { | |
10173 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10174 | sym->st_other = STO_PROTECTED; | |
10175 | sym->st_value = 0; | |
10176 | sym->st_shndx = SHN_MIPS_DATA; | |
10177 | } | |
10178 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
10179 | { | |
10180 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10181 | sym->st_other = STO_PROTECTED; | |
10182 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
10183 | sym->st_shndx = SHN_ABS; | |
10184 | } | |
10185 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
10186 | { | |
10187 | if (h->type == STT_FUNC) | |
10188 | sym->st_shndx = SHN_MIPS_TEXT; | |
10189 | else if (h->type == STT_OBJECT) | |
10190 | sym->st_shndx = SHN_MIPS_DATA; | |
10191 | } | |
10192 | } | |
10193 | ||
861fb55a DJ |
10194 | /* Emit a copy reloc, if needed. */ |
10195 | if (h->needs_copy) | |
10196 | { | |
10197 | asection *s; | |
10198 | bfd_vma symval; | |
10199 | ||
10200 | BFD_ASSERT (h->dynindx != -1); | |
10201 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10202 | ||
10203 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10204 | symval = (h->root.u.def.section->output_section->vma | |
10205 | + h->root.u.def.section->output_offset | |
10206 | + h->root.u.def.value); | |
10207 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
10208 | h->dynindx, R_MIPS_COPY, symval); | |
10209 | } | |
10210 | ||
b49e97c9 TS |
10211 | /* Handle the IRIX6-specific symbols. */ |
10212 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
10213 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
10214 | ||
738e5348 RS |
10215 | /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to |
10216 | treat MIPS16 symbols like any other. */ | |
30c09090 | 10217 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
10218 | { |
10219 | BFD_ASSERT (sym->st_value & 1); | |
10220 | sym->st_other -= STO_MIPS16; | |
10221 | } | |
b49e97c9 | 10222 | |
b34976b6 | 10223 | return TRUE; |
b49e97c9 TS |
10224 | } |
10225 | ||
0a44bf69 RS |
10226 | /* Likewise, for VxWorks. */ |
10227 | ||
10228 | bfd_boolean | |
10229 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
10230 | struct bfd_link_info *info, | |
10231 | struct elf_link_hash_entry *h, | |
10232 | Elf_Internal_Sym *sym) | |
10233 | { | |
10234 | bfd *dynobj; | |
10235 | asection *sgot; | |
10236 | struct mips_got_info *g; | |
10237 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 10238 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
10239 | |
10240 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10241 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 10242 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 10243 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 RS |
10244 | |
10245 | if (h->plt.offset != (bfd_vma) -1) | |
10246 | { | |
6d79d2ed | 10247 | bfd_byte *loc; |
0a44bf69 RS |
10248 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
10249 | Elf_Internal_Rela rel; | |
10250 | static const bfd_vma *plt_entry; | |
10251 | ||
10252 | BFD_ASSERT (h->dynindx != -1); | |
10253 | BFD_ASSERT (htab->splt != NULL); | |
10254 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
10255 | ||
10256 | /* Calculate the address of the .plt entry. */ | |
10257 | plt_address = (htab->splt->output_section->vma | |
10258 | + htab->splt->output_offset | |
10259 | + h->plt.offset); | |
10260 | ||
10261 | /* Calculate the index of the entry. */ | |
10262 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
10263 | / htab->plt_entry_size); | |
10264 | ||
10265 | /* Calculate the address of the .got.plt entry. */ | |
10266 | got_address = (htab->sgotplt->output_section->vma | |
10267 | + htab->sgotplt->output_offset | |
10268 | + plt_index * 4); | |
10269 | ||
10270 | /* Calculate the offset of the .got.plt entry from | |
10271 | _GLOBAL_OFFSET_TABLE_. */ | |
10272 | got_offset = mips_elf_gotplt_index (info, h); | |
10273 | ||
10274 | /* Calculate the offset for the branch at the start of the PLT | |
10275 | entry. The branch jumps to the beginning of .plt. */ | |
10276 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
10277 | ||
10278 | /* Fill in the initial value of the .got.plt entry. */ | |
10279 | bfd_put_32 (output_bfd, plt_address, | |
10280 | htab->sgotplt->contents + plt_index * 4); | |
10281 | ||
10282 | /* Find out where the .plt entry should go. */ | |
10283 | loc = htab->splt->contents + h->plt.offset; | |
10284 | ||
10285 | if (info->shared) | |
10286 | { | |
10287 | plt_entry = mips_vxworks_shared_plt_entry; | |
10288 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10289 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10290 | } | |
10291 | else | |
10292 | { | |
10293 | bfd_vma got_address_high, got_address_low; | |
10294 | ||
10295 | plt_entry = mips_vxworks_exec_plt_entry; | |
10296 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
10297 | got_address_low = got_address & 0xffff; | |
10298 | ||
10299 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10300 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10301 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
10302 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
10303 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10304 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10305 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10306 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10307 | ||
10308 | loc = (htab->srelplt2->contents | |
10309 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
10310 | ||
10311 | /* Emit a relocation for the .got.plt entry. */ | |
10312 | rel.r_offset = got_address; | |
10313 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10314 | rel.r_addend = h->plt.offset; | |
10315 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10316 | ||
10317 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
10318 | loc += sizeof (Elf32_External_Rela); | |
10319 | rel.r_offset = plt_address + 8; | |
10320 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10321 | rel.r_addend = got_offset; | |
10322 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10323 | ||
10324 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
10325 | loc += sizeof (Elf32_External_Rela); | |
10326 | rel.r_offset += 4; | |
10327 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10328 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10329 | } | |
10330 | ||
10331 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
10332 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
10333 | rel.r_offset = got_address; | |
10334 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
10335 | rel.r_addend = 0; | |
10336 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10337 | ||
10338 | if (!h->def_regular) | |
10339 | sym->st_shndx = SHN_UNDEF; | |
10340 | } | |
10341 | ||
10342 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
10343 | ||
23cc69b6 | 10344 | sgot = htab->sgot; |
a8028dd0 | 10345 | g = htab->got_info; |
0a44bf69 RS |
10346 | BFD_ASSERT (g != NULL); |
10347 | ||
10348 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 10349 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
10350 | { |
10351 | bfd_vma offset; | |
10352 | Elf_Internal_Rela outrel; | |
10353 | bfd_byte *loc; | |
10354 | asection *s; | |
10355 | ||
10356 | /* Install the symbol value in the GOT. */ | |
10357 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, | |
10358 | R_MIPS_GOT16, info); | |
10359 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); | |
10360 | ||
10361 | /* Add a dynamic relocation for it. */ | |
10362 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10363 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
10364 | outrel.r_offset = (sgot->output_section->vma | |
10365 | + sgot->output_offset | |
10366 | + offset); | |
10367 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
10368 | outrel.r_addend = 0; | |
10369 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
10370 | } | |
10371 | ||
10372 | /* Emit a copy reloc, if needed. */ | |
10373 | if (h->needs_copy) | |
10374 | { | |
10375 | Elf_Internal_Rela rel; | |
10376 | ||
10377 | BFD_ASSERT (h->dynindx != -1); | |
10378 | ||
10379 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
10380 | + h->root.u.def.section->output_offset | |
10381 | + h->root.u.def.value); | |
10382 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
10383 | rel.r_addend = 0; | |
10384 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
10385 | htab->srelbss->contents | |
10386 | + (htab->srelbss->reloc_count | |
10387 | * sizeof (Elf32_External_Rela))); | |
10388 | ++htab->srelbss->reloc_count; | |
10389 | } | |
10390 | ||
df58fc94 RS |
10391 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
10392 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
10393 | sym->st_value &= ~1; |
10394 | ||
10395 | return TRUE; | |
10396 | } | |
10397 | ||
861fb55a DJ |
10398 | /* Write out a plt0 entry to the beginning of .plt. */ |
10399 | ||
10400 | static void | |
10401 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10402 | { | |
10403 | bfd_byte *loc; | |
10404 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
10405 | static const bfd_vma *plt_entry; | |
10406 | struct mips_elf_link_hash_table *htab; | |
10407 | ||
10408 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10409 | BFD_ASSERT (htab != NULL); |
10410 | ||
861fb55a DJ |
10411 | if (ABI_64_P (output_bfd)) |
10412 | plt_entry = mips_n64_exec_plt0_entry; | |
10413 | else if (ABI_N32_P (output_bfd)) | |
10414 | plt_entry = mips_n32_exec_plt0_entry; | |
10415 | else | |
10416 | plt_entry = mips_o32_exec_plt0_entry; | |
10417 | ||
10418 | /* Calculate the value of .got.plt. */ | |
10419 | gotplt_value = (htab->sgotplt->output_section->vma | |
10420 | + htab->sgotplt->output_offset); | |
10421 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; | |
10422 | gotplt_value_low = gotplt_value & 0xffff; | |
10423 | ||
10424 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
10425 | not be loaded in two instructions. */ | |
10426 | BFD_ASSERT ((gotplt_value & ~(bfd_vma) 0x7fffffff) == 0 | |
10427 | || ~(gotplt_value | 0x7fffffff) == 0); | |
10428 | ||
10429 | /* Install the PLT header. */ | |
10430 | loc = htab->splt->contents; | |
10431 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
10432 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
10433 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
10434 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10435 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10436 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10437 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10438 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10439 | } | |
10440 | ||
0a44bf69 RS |
10441 | /* Install the PLT header for a VxWorks executable and finalize the |
10442 | contents of .rela.plt.unloaded. */ | |
10443 | ||
10444 | static void | |
10445 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10446 | { | |
10447 | Elf_Internal_Rela rela; | |
10448 | bfd_byte *loc; | |
10449 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
10450 | static const bfd_vma *plt_entry; | |
10451 | struct mips_elf_link_hash_table *htab; | |
10452 | ||
10453 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10454 | BFD_ASSERT (htab != NULL); |
10455 | ||
0a44bf69 RS |
10456 | plt_entry = mips_vxworks_exec_plt0_entry; |
10457 | ||
10458 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
10459 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
10460 | + htab->root.hgot->root.u.def.section->output_offset | |
10461 | + htab->root.hgot->root.u.def.value); | |
10462 | ||
10463 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
10464 | got_value_low = got_value & 0xffff; | |
10465 | ||
10466 | /* Calculate the address of the PLT header. */ | |
10467 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
10468 | ||
10469 | /* Install the PLT header. */ | |
10470 | loc = htab->splt->contents; | |
10471 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
10472 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
10473 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
10474 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10475 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10476 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10477 | ||
10478 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
10479 | loc = htab->srelplt2->contents; | |
10480 | rela.r_offset = plt_address; | |
10481 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10482 | rela.r_addend = 0; | |
10483 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10484 | loc += sizeof (Elf32_External_Rela); | |
10485 | ||
10486 | /* Output the relocation for the following addiu of | |
10487 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
10488 | rela.r_offset += 4; | |
10489 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10490 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10491 | loc += sizeof (Elf32_External_Rela); | |
10492 | ||
10493 | /* Fix up the remaining relocations. They may have the wrong | |
10494 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10495 | in which symbols were output. */ | |
10496 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10497 | { | |
10498 | Elf_Internal_Rela rel; | |
10499 | ||
10500 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10501 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10502 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10503 | loc += sizeof (Elf32_External_Rela); | |
10504 | ||
10505 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10506 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10507 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10508 | loc += sizeof (Elf32_External_Rela); | |
10509 | ||
10510 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10511 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10512 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10513 | loc += sizeof (Elf32_External_Rela); | |
10514 | } | |
10515 | } | |
10516 | ||
10517 | /* Install the PLT header for a VxWorks shared library. */ | |
10518 | ||
10519 | static void | |
10520 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10521 | { | |
10522 | unsigned int i; | |
10523 | struct mips_elf_link_hash_table *htab; | |
10524 | ||
10525 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10526 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
10527 | |
10528 | /* We just need to copy the entry byte-by-byte. */ | |
10529 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
10530 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
10531 | htab->splt->contents + i * 4); | |
10532 | } | |
10533 | ||
b49e97c9 TS |
10534 | /* Finish up the dynamic sections. */ |
10535 | ||
b34976b6 | 10536 | bfd_boolean |
9719ad41 RS |
10537 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
10538 | struct bfd_link_info *info) | |
b49e97c9 TS |
10539 | { |
10540 | bfd *dynobj; | |
10541 | asection *sdyn; | |
10542 | asection *sgot; | |
f4416af6 | 10543 | struct mips_got_info *gg, *g; |
0a44bf69 | 10544 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 10545 | |
0a44bf69 | 10546 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
10547 | BFD_ASSERT (htab != NULL); |
10548 | ||
b49e97c9 TS |
10549 | dynobj = elf_hash_table (info)->dynobj; |
10550 | ||
3d4d4302 | 10551 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 10552 | |
23cc69b6 RS |
10553 | sgot = htab->sgot; |
10554 | gg = htab->got_info; | |
b49e97c9 TS |
10555 | |
10556 | if (elf_hash_table (info)->dynamic_sections_created) | |
10557 | { | |
10558 | bfd_byte *b; | |
943284cc | 10559 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
10560 | |
10561 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
10562 | BFD_ASSERT (gg != NULL); |
10563 | ||
10564 | g = mips_elf_got_for_ibfd (gg, output_bfd); | |
b49e97c9 TS |
10565 | BFD_ASSERT (g != NULL); |
10566 | ||
10567 | for (b = sdyn->contents; | |
eea6121a | 10568 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
10569 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
10570 | { | |
10571 | Elf_Internal_Dyn dyn; | |
10572 | const char *name; | |
10573 | size_t elemsize; | |
10574 | asection *s; | |
b34976b6 | 10575 | bfd_boolean swap_out_p; |
b49e97c9 TS |
10576 | |
10577 | /* Read in the current dynamic entry. */ | |
10578 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10579 | ||
10580 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 10581 | swap_out_p = TRUE; |
b49e97c9 TS |
10582 | |
10583 | switch (dyn.d_tag) | |
10584 | { | |
10585 | case DT_RELENT: | |
b49e97c9 TS |
10586 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
10587 | break; | |
10588 | ||
0a44bf69 RS |
10589 | case DT_RELAENT: |
10590 | BFD_ASSERT (htab->is_vxworks); | |
10591 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
10592 | break; | |
10593 | ||
b49e97c9 TS |
10594 | case DT_STRSZ: |
10595 | /* Rewrite DT_STRSZ. */ | |
10596 | dyn.d_un.d_val = | |
10597 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
10598 | break; | |
10599 | ||
10600 | case DT_PLTGOT: | |
861fb55a DJ |
10601 | s = htab->sgot; |
10602 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10603 | break; | |
10604 | ||
10605 | case DT_MIPS_PLTGOT: | |
10606 | s = htab->sgotplt; | |
10607 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
b49e97c9 TS |
10608 | break; |
10609 | ||
10610 | case DT_MIPS_RLD_VERSION: | |
10611 | dyn.d_un.d_val = 1; /* XXX */ | |
10612 | break; | |
10613 | ||
10614 | case DT_MIPS_FLAGS: | |
10615 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
10616 | break; | |
10617 | ||
b49e97c9 | 10618 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
10619 | { |
10620 | time_t t; | |
10621 | time (&t); | |
10622 | dyn.d_un.d_val = t; | |
10623 | } | |
b49e97c9 TS |
10624 | break; |
10625 | ||
10626 | case DT_MIPS_ICHECKSUM: | |
10627 | /* XXX FIXME: */ | |
b34976b6 | 10628 | swap_out_p = FALSE; |
b49e97c9 TS |
10629 | break; |
10630 | ||
10631 | case DT_MIPS_IVERSION: | |
10632 | /* XXX FIXME: */ | |
b34976b6 | 10633 | swap_out_p = FALSE; |
b49e97c9 TS |
10634 | break; |
10635 | ||
10636 | case DT_MIPS_BASE_ADDRESS: | |
10637 | s = output_bfd->sections; | |
10638 | BFD_ASSERT (s != NULL); | |
10639 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
10640 | break; | |
10641 | ||
10642 | case DT_MIPS_LOCAL_GOTNO: | |
10643 | dyn.d_un.d_val = g->local_gotno; | |
10644 | break; | |
10645 | ||
10646 | case DT_MIPS_UNREFEXTNO: | |
10647 | /* The index into the dynamic symbol table which is the | |
10648 | entry of the first external symbol that is not | |
10649 | referenced within the same object. */ | |
10650 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
10651 | break; | |
10652 | ||
10653 | case DT_MIPS_GOTSYM: | |
d222d210 | 10654 | if (htab->global_gotsym) |
b49e97c9 | 10655 | { |
d222d210 | 10656 | dyn.d_un.d_val = htab->global_gotsym->dynindx; |
b49e97c9 TS |
10657 | break; |
10658 | } | |
10659 | /* In case if we don't have global got symbols we default | |
10660 | to setting DT_MIPS_GOTSYM to the same value as | |
10661 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
10662 | ||
10663 | case DT_MIPS_SYMTABNO: | |
10664 | name = ".dynsym"; | |
10665 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
10666 | s = bfd_get_section_by_name (output_bfd, name); | |
10667 | BFD_ASSERT (s != NULL); | |
10668 | ||
eea6121a | 10669 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
10670 | break; |
10671 | ||
10672 | case DT_MIPS_HIPAGENO: | |
861fb55a | 10673 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
10674 | break; |
10675 | ||
10676 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
10677 | { |
10678 | struct elf_link_hash_entry *h; | |
10679 | h = mips_elf_hash_table (info)->rld_symbol; | |
10680 | if (!h) | |
10681 | { | |
10682 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10683 | swap_out_p = FALSE; | |
10684 | break; | |
10685 | } | |
10686 | s = h->root.u.def.section; | |
10687 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset | |
10688 | + h->root.u.def.value); | |
10689 | } | |
b49e97c9 TS |
10690 | break; |
10691 | ||
10692 | case DT_MIPS_OPTIONS: | |
10693 | s = (bfd_get_section_by_name | |
10694 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
10695 | dyn.d_un.d_ptr = s->vma; | |
10696 | break; | |
10697 | ||
0a44bf69 RS |
10698 | case DT_RELASZ: |
10699 | BFD_ASSERT (htab->is_vxworks); | |
10700 | /* The count does not include the JUMP_SLOT relocations. */ | |
10701 | if (htab->srelplt) | |
10702 | dyn.d_un.d_val -= htab->srelplt->size; | |
10703 | break; | |
10704 | ||
10705 | case DT_PLTREL: | |
861fb55a DJ |
10706 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10707 | if (htab->is_vxworks) | |
10708 | dyn.d_un.d_val = DT_RELA; | |
10709 | else | |
10710 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
10711 | break; |
10712 | ||
10713 | case DT_PLTRELSZ: | |
861fb55a | 10714 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
0a44bf69 RS |
10715 | dyn.d_un.d_val = htab->srelplt->size; |
10716 | break; | |
10717 | ||
10718 | case DT_JMPREL: | |
861fb55a DJ |
10719 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10720 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma | |
0a44bf69 RS |
10721 | + htab->srelplt->output_offset); |
10722 | break; | |
10723 | ||
943284cc DJ |
10724 | case DT_TEXTREL: |
10725 | /* If we didn't need any text relocations after all, delete | |
10726 | the dynamic tag. */ | |
10727 | if (!(info->flags & DF_TEXTREL)) | |
10728 | { | |
10729 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10730 | swap_out_p = FALSE; | |
10731 | } | |
10732 | break; | |
10733 | ||
10734 | case DT_FLAGS: | |
10735 | /* If we didn't need any text relocations after all, clear | |
10736 | DF_TEXTREL from DT_FLAGS. */ | |
10737 | if (!(info->flags & DF_TEXTREL)) | |
10738 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
10739 | else | |
10740 | swap_out_p = FALSE; | |
10741 | break; | |
10742 | ||
b49e97c9 | 10743 | default: |
b34976b6 | 10744 | swap_out_p = FALSE; |
7a2b07ff NS |
10745 | if (htab->is_vxworks |
10746 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10747 | swap_out_p = TRUE; | |
b49e97c9 TS |
10748 | break; |
10749 | } | |
10750 | ||
943284cc | 10751 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 10752 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
10753 | (dynobj, &dyn, b - dyn_skipped); |
10754 | ||
10755 | if (dyn_to_skip) | |
10756 | { | |
10757 | dyn_skipped += dyn_to_skip; | |
10758 | dyn_to_skip = 0; | |
10759 | } | |
b49e97c9 | 10760 | } |
943284cc DJ |
10761 | |
10762 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
10763 | if (dyn_skipped > 0) | |
10764 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
10765 | } |
10766 | ||
b55fd4d4 DJ |
10767 | if (sgot != NULL && sgot->size > 0 |
10768 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 10769 | { |
0a44bf69 RS |
10770 | if (htab->is_vxworks) |
10771 | { | |
10772 | /* The first entry of the global offset table points to the | |
10773 | ".dynamic" section. The second is initialized by the | |
10774 | loader and contains the shared library identifier. | |
10775 | The third is also initialized by the loader and points | |
10776 | to the lazy resolution stub. */ | |
10777 | MIPS_ELF_PUT_WORD (output_bfd, | |
10778 | sdyn->output_offset + sdyn->output_section->vma, | |
10779 | sgot->contents); | |
10780 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10781 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
10782 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10783 | sgot->contents | |
10784 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
10785 | } | |
10786 | else | |
10787 | { | |
10788 | /* The first entry of the global offset table will be filled at | |
10789 | runtime. The second entry will be used by some runtime loaders. | |
10790 | This isn't the case of IRIX rld. */ | |
10791 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 10792 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
10793 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
10794 | } | |
b49e97c9 | 10795 | |
54938e2a TS |
10796 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
10797 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
10798 | } | |
b49e97c9 | 10799 | |
f4416af6 AO |
10800 | /* Generate dynamic relocations for the non-primary gots. */ |
10801 | if (gg != NULL && gg->next) | |
10802 | { | |
10803 | Elf_Internal_Rela rel[3]; | |
10804 | bfd_vma addend = 0; | |
10805 | ||
10806 | memset (rel, 0, sizeof (rel)); | |
10807 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
10808 | ||
10809 | for (g = gg->next; g->next != gg; g = g->next) | |
10810 | { | |
91d6fa6a | 10811 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 10812 | + g->next->tls_gotno; |
f4416af6 | 10813 | |
9719ad41 | 10814 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 10815 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
10816 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
10817 | sgot->contents | |
91d6fa6a | 10818 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 AO |
10819 | |
10820 | if (! info->shared) | |
10821 | continue; | |
10822 | ||
91d6fa6a | 10823 | while (got_index < g->assigned_gotno) |
f4416af6 AO |
10824 | { |
10825 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
91d6fa6a | 10826 | = got_index++ * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
10827 | if (!(mips_elf_create_dynamic_relocation |
10828 | (output_bfd, info, rel, NULL, | |
10829 | bfd_abs_section_ptr, | |
10830 | 0, &addend, sgot))) | |
10831 | return FALSE; | |
10832 | BFD_ASSERT (addend == 0); | |
10833 | } | |
10834 | } | |
10835 | } | |
10836 | ||
3133ddbf DJ |
10837 | /* The generation of dynamic relocations for the non-primary gots |
10838 | adds more dynamic relocations. We cannot count them until | |
10839 | here. */ | |
10840 | ||
10841 | if (elf_hash_table (info)->dynamic_sections_created) | |
10842 | { | |
10843 | bfd_byte *b; | |
10844 | bfd_boolean swap_out_p; | |
10845 | ||
10846 | BFD_ASSERT (sdyn != NULL); | |
10847 | ||
10848 | for (b = sdyn->contents; | |
10849 | b < sdyn->contents + sdyn->size; | |
10850 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
10851 | { | |
10852 | Elf_Internal_Dyn dyn; | |
10853 | asection *s; | |
10854 | ||
10855 | /* Read in the current dynamic entry. */ | |
10856 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10857 | ||
10858 | /* Assume that we're going to modify it and write it out. */ | |
10859 | swap_out_p = TRUE; | |
10860 | ||
10861 | switch (dyn.d_tag) | |
10862 | { | |
10863 | case DT_RELSZ: | |
10864 | /* Reduce DT_RELSZ to account for any relocations we | |
10865 | decided not to make. This is for the n64 irix rld, | |
10866 | which doesn't seem to apply any relocations if there | |
10867 | are trailing null entries. */ | |
0a44bf69 | 10868 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
10869 | dyn.d_un.d_val = (s->reloc_count |
10870 | * (ABI_64_P (output_bfd) | |
10871 | ? sizeof (Elf64_Mips_External_Rel) | |
10872 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
10873 | /* Adjust the section size too. Tools like the prelinker |
10874 | can reasonably expect the values to the same. */ | |
10875 | elf_section_data (s->output_section)->this_hdr.sh_size | |
10876 | = dyn.d_un.d_val; | |
3133ddbf DJ |
10877 | break; |
10878 | ||
10879 | default: | |
10880 | swap_out_p = FALSE; | |
10881 | break; | |
10882 | } | |
10883 | ||
10884 | if (swap_out_p) | |
10885 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
10886 | (dynobj, &dyn, b); | |
10887 | } | |
10888 | } | |
10889 | ||
b49e97c9 | 10890 | { |
b49e97c9 TS |
10891 | asection *s; |
10892 | Elf32_compact_rel cpt; | |
10893 | ||
b49e97c9 TS |
10894 | if (SGI_COMPAT (output_bfd)) |
10895 | { | |
10896 | /* Write .compact_rel section out. */ | |
3d4d4302 | 10897 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
10898 | if (s != NULL) |
10899 | { | |
10900 | cpt.id1 = 1; | |
10901 | cpt.num = s->reloc_count; | |
10902 | cpt.id2 = 2; | |
10903 | cpt.offset = (s->output_section->filepos | |
10904 | + sizeof (Elf32_External_compact_rel)); | |
10905 | cpt.reserved0 = 0; | |
10906 | cpt.reserved1 = 0; | |
10907 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
10908 | ((Elf32_External_compact_rel *) | |
10909 | s->contents)); | |
10910 | ||
10911 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 10912 | if (htab->sstubs != NULL) |
b49e97c9 TS |
10913 | { |
10914 | file_ptr dummy_offset; | |
10915 | ||
4e41d0d7 RS |
10916 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
10917 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
10918 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 10919 | htab->function_stub_size); |
b49e97c9 TS |
10920 | } |
10921 | } | |
10922 | } | |
10923 | ||
0a44bf69 RS |
10924 | /* The psABI says that the dynamic relocations must be sorted in |
10925 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
10926 | this, and because the code below handles REL rather than RELA | |
10927 | relocations, using it for VxWorks would be outright harmful. */ | |
10928 | if (!htab->is_vxworks) | |
b49e97c9 | 10929 | { |
0a44bf69 RS |
10930 | s = mips_elf_rel_dyn_section (info, FALSE); |
10931 | if (s != NULL | |
10932 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
10933 | { | |
10934 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 10935 | |
0a44bf69 RS |
10936 | if (ABI_64_P (output_bfd)) |
10937 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
10938 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
10939 | sort_dynamic_relocs_64); | |
10940 | else | |
10941 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
10942 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
10943 | sort_dynamic_relocs); | |
10944 | } | |
b49e97c9 | 10945 | } |
b49e97c9 TS |
10946 | } |
10947 | ||
861fb55a | 10948 | if (htab->splt && htab->splt->size > 0) |
0a44bf69 | 10949 | { |
861fb55a DJ |
10950 | if (htab->is_vxworks) |
10951 | { | |
10952 | if (info->shared) | |
10953 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
10954 | else | |
10955 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
10956 | } | |
0a44bf69 | 10957 | else |
861fb55a DJ |
10958 | { |
10959 | BFD_ASSERT (!info->shared); | |
10960 | mips_finish_exec_plt (output_bfd, info); | |
10961 | } | |
0a44bf69 | 10962 | } |
b34976b6 | 10963 | return TRUE; |
b49e97c9 TS |
10964 | } |
10965 | ||
b49e97c9 | 10966 | |
64543e1a RS |
10967 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
10968 | ||
10969 | static void | |
9719ad41 | 10970 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 10971 | { |
64543e1a | 10972 | flagword val; |
b49e97c9 TS |
10973 | |
10974 | switch (bfd_get_mach (abfd)) | |
10975 | { | |
10976 | default: | |
10977 | case bfd_mach_mips3000: | |
10978 | val = E_MIPS_ARCH_1; | |
10979 | break; | |
10980 | ||
10981 | case bfd_mach_mips3900: | |
10982 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
10983 | break; | |
10984 | ||
10985 | case bfd_mach_mips6000: | |
10986 | val = E_MIPS_ARCH_2; | |
10987 | break; | |
10988 | ||
10989 | case bfd_mach_mips4000: | |
10990 | case bfd_mach_mips4300: | |
10991 | case bfd_mach_mips4400: | |
10992 | case bfd_mach_mips4600: | |
10993 | val = E_MIPS_ARCH_3; | |
10994 | break; | |
10995 | ||
10996 | case bfd_mach_mips4010: | |
10997 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
10998 | break; | |
10999 | ||
11000 | case bfd_mach_mips4100: | |
11001 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
11002 | break; | |
11003 | ||
11004 | case bfd_mach_mips4111: | |
11005 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
11006 | break; | |
11007 | ||
00707a0e RS |
11008 | case bfd_mach_mips4120: |
11009 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
11010 | break; | |
11011 | ||
b49e97c9 TS |
11012 | case bfd_mach_mips4650: |
11013 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
11014 | break; | |
11015 | ||
00707a0e RS |
11016 | case bfd_mach_mips5400: |
11017 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
11018 | break; | |
11019 | ||
11020 | case bfd_mach_mips5500: | |
11021 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
11022 | break; | |
11023 | ||
e407c74b NC |
11024 | case bfd_mach_mips5900: |
11025 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
11026 | break; | |
11027 | ||
0d2e43ed ILT |
11028 | case bfd_mach_mips9000: |
11029 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
11030 | break; | |
11031 | ||
b49e97c9 | 11032 | case bfd_mach_mips5000: |
5a7ea749 | 11033 | case bfd_mach_mips7000: |
b49e97c9 TS |
11034 | case bfd_mach_mips8000: |
11035 | case bfd_mach_mips10000: | |
11036 | case bfd_mach_mips12000: | |
3aa3176b TS |
11037 | case bfd_mach_mips14000: |
11038 | case bfd_mach_mips16000: | |
b49e97c9 TS |
11039 | val = E_MIPS_ARCH_4; |
11040 | break; | |
11041 | ||
11042 | case bfd_mach_mips5: | |
11043 | val = E_MIPS_ARCH_5; | |
11044 | break; | |
11045 | ||
350cc38d MS |
11046 | case bfd_mach_mips_loongson_2e: |
11047 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
11048 | break; | |
11049 | ||
11050 | case bfd_mach_mips_loongson_2f: | |
11051 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
11052 | break; | |
11053 | ||
b49e97c9 TS |
11054 | case bfd_mach_mips_sb1: |
11055 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
11056 | break; | |
11057 | ||
d051516a NC |
11058 | case bfd_mach_mips_loongson_3a: |
11059 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_LS3A; | |
11060 | break; | |
11061 | ||
6f179bd0 | 11062 | case bfd_mach_mips_octeon: |
dd6a37e7 | 11063 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
11064 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
11065 | break; | |
11066 | ||
52b6b6b9 JM |
11067 | case bfd_mach_mips_xlr: |
11068 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
11069 | break; | |
11070 | ||
432233b3 AP |
11071 | case bfd_mach_mips_octeon2: |
11072 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
11073 | break; | |
11074 | ||
b49e97c9 TS |
11075 | case bfd_mach_mipsisa32: |
11076 | val = E_MIPS_ARCH_32; | |
11077 | break; | |
11078 | ||
11079 | case bfd_mach_mipsisa64: | |
11080 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
11081 | break; |
11082 | ||
11083 | case bfd_mach_mipsisa32r2: | |
11084 | val = E_MIPS_ARCH_32R2; | |
11085 | break; | |
5f74bc13 CD |
11086 | |
11087 | case bfd_mach_mipsisa64r2: | |
11088 | val = E_MIPS_ARCH_64R2; | |
11089 | break; | |
b49e97c9 | 11090 | } |
b49e97c9 TS |
11091 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
11092 | elf_elfheader (abfd)->e_flags |= val; | |
11093 | ||
64543e1a RS |
11094 | } |
11095 | ||
11096 | ||
11097 | /* The final processing done just before writing out a MIPS ELF object | |
11098 | file. This gets the MIPS architecture right based on the machine | |
11099 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
11100 | ||
11101 | void | |
9719ad41 RS |
11102 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
11103 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
11104 | { |
11105 | unsigned int i; | |
11106 | Elf_Internal_Shdr **hdrpp; | |
11107 | const char *name; | |
11108 | asection *sec; | |
11109 | ||
11110 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
11111 | is nonzero. This is for compatibility with old objects, which used | |
11112 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
11113 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
11114 | mips_set_isa_flags (abfd); | |
11115 | ||
b49e97c9 TS |
11116 | /* Set the sh_info field for .gptab sections and other appropriate |
11117 | info for each special section. */ | |
11118 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
11119 | i < elf_numsections (abfd); | |
11120 | i++, hdrpp++) | |
11121 | { | |
11122 | switch ((*hdrpp)->sh_type) | |
11123 | { | |
11124 | case SHT_MIPS_MSYM: | |
11125 | case SHT_MIPS_LIBLIST: | |
11126 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
11127 | if (sec != NULL) | |
11128 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11129 | break; | |
11130 | ||
11131 | case SHT_MIPS_GPTAB: | |
11132 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11133 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11134 | BFD_ASSERT (name != NULL | |
0112cd26 | 11135 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
11136 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
11137 | BFD_ASSERT (sec != NULL); | |
11138 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11139 | break; | |
11140 | ||
11141 | case SHT_MIPS_CONTENT: | |
11142 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11143 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11144 | BFD_ASSERT (name != NULL | |
0112cd26 | 11145 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
11146 | sec = bfd_get_section_by_name (abfd, |
11147 | name + sizeof ".MIPS.content" - 1); | |
11148 | BFD_ASSERT (sec != NULL); | |
11149 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11150 | break; | |
11151 | ||
11152 | case SHT_MIPS_SYMBOL_LIB: | |
11153 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
11154 | if (sec != NULL) | |
11155 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11156 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
11157 | if (sec != NULL) | |
11158 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11159 | break; | |
11160 | ||
11161 | case SHT_MIPS_EVENTS: | |
11162 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11163 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11164 | BFD_ASSERT (name != NULL); | |
0112cd26 | 11165 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
11166 | sec = bfd_get_section_by_name (abfd, |
11167 | name + sizeof ".MIPS.events" - 1); | |
11168 | else | |
11169 | { | |
0112cd26 | 11170 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
11171 | sec = bfd_get_section_by_name (abfd, |
11172 | (name | |
11173 | + sizeof ".MIPS.post_rel" - 1)); | |
11174 | } | |
11175 | BFD_ASSERT (sec != NULL); | |
11176 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11177 | break; | |
11178 | ||
11179 | } | |
11180 | } | |
11181 | } | |
11182 | \f | |
8dc1a139 | 11183 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
11184 | segments. */ |
11185 | ||
11186 | int | |
a6b96beb AM |
11187 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
11188 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11189 | { |
11190 | asection *s; | |
11191 | int ret = 0; | |
11192 | ||
11193 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
11194 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11195 | if (s && (s->flags & SEC_LOAD)) | |
11196 | ++ret; | |
11197 | ||
11198 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
11199 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
11200 | && bfd_get_section_by_name (abfd, | |
11201 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
11202 | ++ret; | |
11203 | ||
11204 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
11205 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
11206 | && bfd_get_section_by_name (abfd, ".dynamic") | |
11207 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
11208 | ++ret; | |
11209 | ||
98c904a8 RS |
11210 | /* Allocate a PT_NULL header in dynamic objects. See |
11211 | _bfd_mips_elf_modify_segment_map for details. */ | |
11212 | if (!SGI_COMPAT (abfd) | |
11213 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
11214 | ++ret; | |
11215 | ||
b49e97c9 TS |
11216 | return ret; |
11217 | } | |
11218 | ||
8dc1a139 | 11219 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 11220 | |
b34976b6 | 11221 | bfd_boolean |
9719ad41 | 11222 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 11223 | struct bfd_link_info *info) |
b49e97c9 TS |
11224 | { |
11225 | asection *s; | |
11226 | struct elf_segment_map *m, **pm; | |
11227 | bfd_size_type amt; | |
11228 | ||
11229 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
11230 | segment. */ | |
11231 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11232 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11233 | { | |
11234 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
11235 | if (m->p_type == PT_MIPS_REGINFO) | |
11236 | break; | |
11237 | if (m == NULL) | |
11238 | { | |
11239 | amt = sizeof *m; | |
9719ad41 | 11240 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11241 | if (m == NULL) |
b34976b6 | 11242 | return FALSE; |
b49e97c9 TS |
11243 | |
11244 | m->p_type = PT_MIPS_REGINFO; | |
11245 | m->count = 1; | |
11246 | m->sections[0] = s; | |
11247 | ||
11248 | /* We want to put it after the PHDR and INTERP segments. */ | |
11249 | pm = &elf_tdata (abfd)->segment_map; | |
11250 | while (*pm != NULL | |
11251 | && ((*pm)->p_type == PT_PHDR | |
11252 | || (*pm)->p_type == PT_INTERP)) | |
11253 | pm = &(*pm)->next; | |
11254 | ||
11255 | m->next = *pm; | |
11256 | *pm = m; | |
11257 | } | |
11258 | } | |
11259 | ||
11260 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
11261 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 11262 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 11263 | table. */ |
c1fd6598 AO |
11264 | if (NEWABI_P (abfd) |
11265 | /* On non-IRIX6 new abi, we'll have already created a segment | |
11266 | for this section, so don't create another. I'm not sure this | |
11267 | is not also the case for IRIX 6, but I can't test it right | |
11268 | now. */ | |
11269 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
11270 | { |
11271 | for (s = abfd->sections; s; s = s->next) | |
11272 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
11273 | break; | |
11274 | ||
11275 | if (s) | |
11276 | { | |
11277 | struct elf_segment_map *options_segment; | |
11278 | ||
98a8deaf RS |
11279 | pm = &elf_tdata (abfd)->segment_map; |
11280 | while (*pm != NULL | |
11281 | && ((*pm)->p_type == PT_PHDR | |
11282 | || (*pm)->p_type == PT_INTERP)) | |
11283 | pm = &(*pm)->next; | |
b49e97c9 | 11284 | |
8ded5a0f AM |
11285 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
11286 | { | |
11287 | amt = sizeof (struct elf_segment_map); | |
11288 | options_segment = bfd_zalloc (abfd, amt); | |
11289 | options_segment->next = *pm; | |
11290 | options_segment->p_type = PT_MIPS_OPTIONS; | |
11291 | options_segment->p_flags = PF_R; | |
11292 | options_segment->p_flags_valid = TRUE; | |
11293 | options_segment->count = 1; | |
11294 | options_segment->sections[0] = s; | |
11295 | *pm = options_segment; | |
11296 | } | |
b49e97c9 TS |
11297 | } |
11298 | } | |
11299 | else | |
11300 | { | |
11301 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
11302 | { | |
11303 | /* If there are .dynamic and .mdebug sections, we make a room | |
11304 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
11305 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
11306 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
11307 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
11308 | { | |
11309 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
11310 | if (m->p_type == PT_MIPS_RTPROC) | |
11311 | break; | |
11312 | if (m == NULL) | |
11313 | { | |
11314 | amt = sizeof *m; | |
9719ad41 | 11315 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11316 | if (m == NULL) |
b34976b6 | 11317 | return FALSE; |
b49e97c9 TS |
11318 | |
11319 | m->p_type = PT_MIPS_RTPROC; | |
11320 | ||
11321 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
11322 | if (s == NULL) | |
11323 | { | |
11324 | m->count = 0; | |
11325 | m->p_flags = 0; | |
11326 | m->p_flags_valid = 1; | |
11327 | } | |
11328 | else | |
11329 | { | |
11330 | m->count = 1; | |
11331 | m->sections[0] = s; | |
11332 | } | |
11333 | ||
11334 | /* We want to put it after the DYNAMIC segment. */ | |
11335 | pm = &elf_tdata (abfd)->segment_map; | |
11336 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
11337 | pm = &(*pm)->next; | |
11338 | if (*pm != NULL) | |
11339 | pm = &(*pm)->next; | |
11340 | ||
11341 | m->next = *pm; | |
11342 | *pm = m; | |
11343 | } | |
11344 | } | |
11345 | } | |
8dc1a139 | 11346 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
11347 | .dynstr, .dynsym, and .hash sections, and everything in |
11348 | between. */ | |
11349 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; | |
11350 | pm = &(*pm)->next) | |
11351 | if ((*pm)->p_type == PT_DYNAMIC) | |
11352 | break; | |
11353 | m = *pm; | |
11354 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
11355 | { | |
11356 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
11357 | segment are read, write and execute. We do that here since | |
11358 | the code in elf.c sets only the read permission. This matters | |
11359 | sometimes for the dynamic linker. */ | |
11360 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
11361 | { | |
11362 | m->p_flags = PF_R | PF_W | PF_X; | |
11363 | m->p_flags_valid = 1; | |
11364 | } | |
11365 | } | |
f6f62d6f RS |
11366 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
11367 | glibc's dynamic linker has traditionally derived the number of | |
11368 | tags from the p_filesz field, and sometimes allocates stack | |
11369 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
11370 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
11371 | other sections can also make life hard for the prelinker, | |
11372 | which might move one of the other sections to a different | |
11373 | PT_LOAD segment. */ | |
11374 | if (SGI_COMPAT (abfd) | |
11375 | && m != NULL | |
11376 | && m->count == 1 | |
11377 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
11378 | { |
11379 | static const char *sec_names[] = | |
11380 | { | |
11381 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
11382 | }; | |
11383 | bfd_vma low, high; | |
11384 | unsigned int i, c; | |
11385 | struct elf_segment_map *n; | |
11386 | ||
792b4a53 | 11387 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
11388 | high = 0; |
11389 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
11390 | { | |
11391 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
11392 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11393 | { | |
11394 | bfd_size_type sz; | |
11395 | ||
11396 | if (low > s->vma) | |
11397 | low = s->vma; | |
eea6121a | 11398 | sz = s->size; |
b49e97c9 TS |
11399 | if (high < s->vma + sz) |
11400 | high = s->vma + sz; | |
11401 | } | |
11402 | } | |
11403 | ||
11404 | c = 0; | |
11405 | for (s = abfd->sections; s != NULL; s = s->next) | |
11406 | if ((s->flags & SEC_LOAD) != 0 | |
11407 | && s->vma >= low | |
eea6121a | 11408 | && s->vma + s->size <= high) |
b49e97c9 TS |
11409 | ++c; |
11410 | ||
11411 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 11412 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 11413 | if (n == NULL) |
b34976b6 | 11414 | return FALSE; |
b49e97c9 TS |
11415 | *n = *m; |
11416 | n->count = c; | |
11417 | ||
11418 | i = 0; | |
11419 | for (s = abfd->sections; s != NULL; s = s->next) | |
11420 | { | |
11421 | if ((s->flags & SEC_LOAD) != 0 | |
11422 | && s->vma >= low | |
eea6121a | 11423 | && s->vma + s->size <= high) |
b49e97c9 TS |
11424 | { |
11425 | n->sections[i] = s; | |
11426 | ++i; | |
11427 | } | |
11428 | } | |
11429 | ||
11430 | *pm = n; | |
11431 | } | |
11432 | } | |
11433 | ||
98c904a8 RS |
11434 | /* Allocate a spare program header in dynamic objects so that tools |
11435 | like the prelinker can add an extra PT_LOAD entry. | |
11436 | ||
11437 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
11438 | standard procedure is to move the first (read-only) sections into | |
11439 | the new (writable) segment. However, the MIPS ABI requires | |
11440 | .dynamic to be in a read-only segment, and the section will often | |
11441 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
11442 | ||
11443 | Although the prelinker could in principle move .dynamic to a | |
11444 | writable segment, it seems better to allocate a spare program | |
11445 | header instead, and avoid the need to move any sections. | |
11446 | There is a long tradition of allocating spare dynamic tags, | |
11447 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
11448 | extension. |
11449 | ||
11450 | If INFO is NULL, we may be copying an already prelinked binary | |
11451 | with objcopy or strip, so do not add this header. */ | |
11452 | if (info != NULL | |
11453 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
11454 | && bfd_get_section_by_name (abfd, ".dynamic")) |
11455 | { | |
11456 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
11457 | if ((*pm)->p_type == PT_NULL) | |
11458 | break; | |
11459 | if (*pm == NULL) | |
11460 | { | |
11461 | m = bfd_zalloc (abfd, sizeof (*m)); | |
11462 | if (m == NULL) | |
11463 | return FALSE; | |
11464 | ||
11465 | m->p_type = PT_NULL; | |
11466 | *pm = m; | |
11467 | } | |
11468 | } | |
11469 | ||
b34976b6 | 11470 | return TRUE; |
b49e97c9 TS |
11471 | } |
11472 | \f | |
11473 | /* Return the section that should be marked against GC for a given | |
11474 | relocation. */ | |
11475 | ||
11476 | asection * | |
9719ad41 | 11477 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 11478 | struct bfd_link_info *info, |
9719ad41 RS |
11479 | Elf_Internal_Rela *rel, |
11480 | struct elf_link_hash_entry *h, | |
11481 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
11482 | { |
11483 | /* ??? Do mips16 stub sections need to be handled special? */ | |
11484 | ||
11485 | if (h != NULL) | |
07adf181 AM |
11486 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
11487 | { | |
11488 | case R_MIPS_GNU_VTINHERIT: | |
11489 | case R_MIPS_GNU_VTENTRY: | |
11490 | return NULL; | |
11491 | } | |
b49e97c9 | 11492 | |
07adf181 | 11493 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
11494 | } |
11495 | ||
11496 | /* Update the got entry reference counts for the section being removed. */ | |
11497 | ||
b34976b6 | 11498 | bfd_boolean |
9719ad41 RS |
11499 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
11500 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
11501 | asection *sec ATTRIBUTE_UNUSED, | |
11502 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11503 | { |
11504 | #if 0 | |
11505 | Elf_Internal_Shdr *symtab_hdr; | |
11506 | struct elf_link_hash_entry **sym_hashes; | |
11507 | bfd_signed_vma *local_got_refcounts; | |
11508 | const Elf_Internal_Rela *rel, *relend; | |
11509 | unsigned long r_symndx; | |
11510 | struct elf_link_hash_entry *h; | |
11511 | ||
7dda2462 TG |
11512 | if (info->relocatable) |
11513 | return TRUE; | |
11514 | ||
b49e97c9 TS |
11515 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
11516 | sym_hashes = elf_sym_hashes (abfd); | |
11517 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
11518 | ||
11519 | relend = relocs + sec->reloc_count; | |
11520 | for (rel = relocs; rel < relend; rel++) | |
11521 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
11522 | { | |
738e5348 RS |
11523 | case R_MIPS16_GOT16: |
11524 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
11525 | case R_MIPS_GOT16: |
11526 | case R_MIPS_CALL16: | |
11527 | case R_MIPS_CALL_HI16: | |
11528 | case R_MIPS_CALL_LO16: | |
11529 | case R_MIPS_GOT_HI16: | |
11530 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
11531 | case R_MIPS_GOT_DISP: |
11532 | case R_MIPS_GOT_PAGE: | |
11533 | case R_MIPS_GOT_OFST: | |
df58fc94 RS |
11534 | case R_MICROMIPS_GOT16: |
11535 | case R_MICROMIPS_CALL16: | |
11536 | case R_MICROMIPS_CALL_HI16: | |
11537 | case R_MICROMIPS_CALL_LO16: | |
11538 | case R_MICROMIPS_GOT_HI16: | |
11539 | case R_MICROMIPS_GOT_LO16: | |
11540 | case R_MICROMIPS_GOT_DISP: | |
11541 | case R_MICROMIPS_GOT_PAGE: | |
11542 | case R_MICROMIPS_GOT_OFST: | |
b49e97c9 TS |
11543 | /* ??? It would seem that the existing MIPS code does no sort |
11544 | of reference counting or whatnot on its GOT and PLT entries, | |
11545 | so it is not possible to garbage collect them at this time. */ | |
11546 | break; | |
11547 | ||
11548 | default: | |
11549 | break; | |
11550 | } | |
11551 | #endif | |
11552 | ||
b34976b6 | 11553 | return TRUE; |
b49e97c9 TS |
11554 | } |
11555 | \f | |
11556 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
11557 | hiding the old indirect symbol. Process additional relocation | |
11558 | information. Also called for weakdefs, in which case we just let | |
11559 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
11560 | ||
11561 | void | |
fcfa13d2 | 11562 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
11563 | struct elf_link_hash_entry *dir, |
11564 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
11565 | { |
11566 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
11567 | ||
fcfa13d2 | 11568 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 11569 | |
861fb55a DJ |
11570 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
11571 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
11572 | /* Any absolute non-dynamic relocations against an indirect or weak | |
11573 | definition will be against the target symbol. */ | |
11574 | if (indmips->has_static_relocs) | |
11575 | dirmips->has_static_relocs = TRUE; | |
11576 | ||
b49e97c9 TS |
11577 | if (ind->root.type != bfd_link_hash_indirect) |
11578 | return; | |
11579 | ||
b49e97c9 TS |
11580 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
11581 | if (indmips->readonly_reloc) | |
b34976b6 | 11582 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 11583 | if (indmips->no_fn_stub) |
b34976b6 | 11584 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
11585 | if (indmips->fn_stub) |
11586 | { | |
11587 | dirmips->fn_stub = indmips->fn_stub; | |
11588 | indmips->fn_stub = NULL; | |
11589 | } | |
11590 | if (indmips->need_fn_stub) | |
11591 | { | |
11592 | dirmips->need_fn_stub = TRUE; | |
11593 | indmips->need_fn_stub = FALSE; | |
11594 | } | |
11595 | if (indmips->call_stub) | |
11596 | { | |
11597 | dirmips->call_stub = indmips->call_stub; | |
11598 | indmips->call_stub = NULL; | |
11599 | } | |
11600 | if (indmips->call_fp_stub) | |
11601 | { | |
11602 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
11603 | indmips->call_fp_stub = NULL; | |
11604 | } | |
634835ae RS |
11605 | if (indmips->global_got_area < dirmips->global_got_area) |
11606 | dirmips->global_got_area = indmips->global_got_area; | |
11607 | if (indmips->global_got_area < GGA_NONE) | |
11608 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
11609 | if (indmips->has_nonpic_branches) |
11610 | dirmips->has_nonpic_branches = TRUE; | |
0f20cc35 DJ |
11611 | |
11612 | if (dirmips->tls_type == 0) | |
11613 | dirmips->tls_type = indmips->tls_type; | |
b49e97c9 | 11614 | } |
b49e97c9 | 11615 | \f |
d01414a5 TS |
11616 | #define PDR_SIZE 32 |
11617 | ||
b34976b6 | 11618 | bfd_boolean |
9719ad41 RS |
11619 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
11620 | struct bfd_link_info *info) | |
d01414a5 TS |
11621 | { |
11622 | asection *o; | |
b34976b6 | 11623 | bfd_boolean ret = FALSE; |
d01414a5 TS |
11624 | unsigned char *tdata; |
11625 | size_t i, skip; | |
11626 | ||
11627 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
11628 | if (! o) | |
b34976b6 | 11629 | return FALSE; |
eea6121a | 11630 | if (o->size == 0) |
b34976b6 | 11631 | return FALSE; |
eea6121a | 11632 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 11633 | return FALSE; |
d01414a5 TS |
11634 | if (o->output_section != NULL |
11635 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 11636 | return FALSE; |
d01414a5 | 11637 | |
eea6121a | 11638 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 11639 | if (! tdata) |
b34976b6 | 11640 | return FALSE; |
d01414a5 | 11641 | |
9719ad41 | 11642 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 11643 | info->keep_memory); |
d01414a5 TS |
11644 | if (!cookie->rels) |
11645 | { | |
11646 | free (tdata); | |
b34976b6 | 11647 | return FALSE; |
d01414a5 TS |
11648 | } |
11649 | ||
11650 | cookie->rel = cookie->rels; | |
11651 | cookie->relend = cookie->rels + o->reloc_count; | |
11652 | ||
eea6121a | 11653 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 11654 | { |
c152c796 | 11655 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
11656 | { |
11657 | tdata[i] = 1; | |
11658 | skip ++; | |
11659 | } | |
11660 | } | |
11661 | ||
11662 | if (skip != 0) | |
11663 | { | |
f0abc2a1 | 11664 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 11665 | o->size -= skip * PDR_SIZE; |
b34976b6 | 11666 | ret = TRUE; |
d01414a5 TS |
11667 | } |
11668 | else | |
11669 | free (tdata); | |
11670 | ||
11671 | if (! info->keep_memory) | |
11672 | free (cookie->rels); | |
11673 | ||
11674 | return ret; | |
11675 | } | |
11676 | ||
b34976b6 | 11677 | bfd_boolean |
9719ad41 | 11678 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
11679 | { |
11680 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
11681 | return TRUE; |
11682 | return FALSE; | |
53bfd6b4 | 11683 | } |
d01414a5 | 11684 | |
b34976b6 | 11685 | bfd_boolean |
c7b8f16e JB |
11686 | _bfd_mips_elf_write_section (bfd *output_bfd, |
11687 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
11688 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
11689 | { |
11690 | bfd_byte *to, *from, *end; | |
11691 | int i; | |
11692 | ||
11693 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 11694 | return FALSE; |
d01414a5 | 11695 | |
f0abc2a1 | 11696 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 11697 | return FALSE; |
d01414a5 TS |
11698 | |
11699 | to = contents; | |
eea6121a | 11700 | end = contents + sec->size; |
d01414a5 TS |
11701 | for (from = contents, i = 0; |
11702 | from < end; | |
11703 | from += PDR_SIZE, i++) | |
11704 | { | |
f0abc2a1 | 11705 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
11706 | continue; |
11707 | if (to != from) | |
11708 | memcpy (to, from, PDR_SIZE); | |
11709 | to += PDR_SIZE; | |
11710 | } | |
11711 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 11712 | sec->output_offset, sec->size); |
b34976b6 | 11713 | return TRUE; |
d01414a5 | 11714 | } |
53bfd6b4 | 11715 | \f |
df58fc94 RS |
11716 | /* microMIPS code retains local labels for linker relaxation. Omit them |
11717 | from output by default for clarity. */ | |
11718 | ||
11719 | bfd_boolean | |
11720 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) | |
11721 | { | |
11722 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
11723 | } | |
11724 | ||
b49e97c9 TS |
11725 | /* MIPS ELF uses a special find_nearest_line routine in order the |
11726 | handle the ECOFF debugging information. */ | |
11727 | ||
11728 | struct mips_elf_find_line | |
11729 | { | |
11730 | struct ecoff_debug_info d; | |
11731 | struct ecoff_find_line i; | |
11732 | }; | |
11733 | ||
b34976b6 | 11734 | bfd_boolean |
9719ad41 RS |
11735 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
11736 | asymbol **symbols, bfd_vma offset, | |
11737 | const char **filename_ptr, | |
11738 | const char **functionname_ptr, | |
11739 | unsigned int *line_ptr) | |
b49e97c9 TS |
11740 | { |
11741 | asection *msec; | |
11742 | ||
11743 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
11744 | filename_ptr, functionname_ptr, | |
11745 | line_ptr)) | |
b34976b6 | 11746 | return TRUE; |
b49e97c9 | 11747 | |
fc28f9aa TG |
11748 | if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, |
11749 | section, symbols, offset, | |
b49e97c9 | 11750 | filename_ptr, functionname_ptr, |
9b8d1a36 | 11751 | line_ptr, NULL, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 11752 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 11753 | return TRUE; |
b49e97c9 TS |
11754 | |
11755 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
11756 | if (msec != NULL) | |
11757 | { | |
11758 | flagword origflags; | |
11759 | struct mips_elf_find_line *fi; | |
11760 | const struct ecoff_debug_swap * const swap = | |
11761 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
11762 | ||
11763 | /* If we are called during a link, mips_elf_final_link may have | |
11764 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
11765 | if appropriate (which it normally will be). */ | |
11766 | origflags = msec->flags; | |
11767 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
11768 | msec->flags |= SEC_HAS_CONTENTS; | |
11769 | ||
11770 | fi = elf_tdata (abfd)->find_line_info; | |
11771 | if (fi == NULL) | |
11772 | { | |
11773 | bfd_size_type external_fdr_size; | |
11774 | char *fraw_src; | |
11775 | char *fraw_end; | |
11776 | struct fdr *fdr_ptr; | |
11777 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
11778 | ||
9719ad41 | 11779 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
11780 | if (fi == NULL) |
11781 | { | |
11782 | msec->flags = origflags; | |
b34976b6 | 11783 | return FALSE; |
b49e97c9 TS |
11784 | } |
11785 | ||
11786 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
11787 | { | |
11788 | msec->flags = origflags; | |
b34976b6 | 11789 | return FALSE; |
b49e97c9 TS |
11790 | } |
11791 | ||
11792 | /* Swap in the FDR information. */ | |
11793 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 11794 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11795 | if (fi->d.fdr == NULL) |
11796 | { | |
11797 | msec->flags = origflags; | |
b34976b6 | 11798 | return FALSE; |
b49e97c9 TS |
11799 | } |
11800 | external_fdr_size = swap->external_fdr_size; | |
11801 | fdr_ptr = fi->d.fdr; | |
11802 | fraw_src = (char *) fi->d.external_fdr; | |
11803 | fraw_end = (fraw_src | |
11804 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
11805 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 11806 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 TS |
11807 | |
11808 | elf_tdata (abfd)->find_line_info = fi; | |
11809 | ||
11810 | /* Note that we don't bother to ever free this information. | |
11811 | find_nearest_line is either called all the time, as in | |
11812 | objdump -l, so the information should be saved, or it is | |
11813 | rarely called, as in ld error messages, so the memory | |
11814 | wasted is unimportant. Still, it would probably be a | |
11815 | good idea for free_cached_info to throw it away. */ | |
11816 | } | |
11817 | ||
11818 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
11819 | &fi->i, filename_ptr, functionname_ptr, | |
11820 | line_ptr)) | |
11821 | { | |
11822 | msec->flags = origflags; | |
b34976b6 | 11823 | return TRUE; |
b49e97c9 TS |
11824 | } |
11825 | ||
11826 | msec->flags = origflags; | |
11827 | } | |
11828 | ||
11829 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
11830 | ||
11831 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
11832 | filename_ptr, functionname_ptr, | |
11833 | line_ptr); | |
11834 | } | |
4ab527b0 FF |
11835 | |
11836 | bfd_boolean | |
11837 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
11838 | const char **filename_ptr, | |
11839 | const char **functionname_ptr, | |
11840 | unsigned int *line_ptr) | |
11841 | { | |
11842 | bfd_boolean found; | |
11843 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11844 | functionname_ptr, line_ptr, | |
11845 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11846 | return found; | |
11847 | } | |
11848 | ||
b49e97c9 TS |
11849 | \f |
11850 | /* When are writing out the .options or .MIPS.options section, | |
11851 | remember the bytes we are writing out, so that we can install the | |
11852 | GP value in the section_processing routine. */ | |
11853 | ||
b34976b6 | 11854 | bfd_boolean |
9719ad41 RS |
11855 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
11856 | const void *location, | |
11857 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 11858 | { |
cc2e31b9 | 11859 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
11860 | { |
11861 | bfd_byte *c; | |
11862 | ||
11863 | if (elf_section_data (section) == NULL) | |
11864 | { | |
11865 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 11866 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 11867 | if (elf_section_data (section) == NULL) |
b34976b6 | 11868 | return FALSE; |
b49e97c9 | 11869 | } |
f0abc2a1 | 11870 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
11871 | if (c == NULL) |
11872 | { | |
eea6121a | 11873 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 11874 | if (c == NULL) |
b34976b6 | 11875 | return FALSE; |
f0abc2a1 | 11876 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
11877 | } |
11878 | ||
9719ad41 | 11879 | memcpy (c + offset, location, count); |
b49e97c9 TS |
11880 | } |
11881 | ||
11882 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
11883 | count); | |
11884 | } | |
11885 | ||
11886 | /* This is almost identical to bfd_generic_get_... except that some | |
11887 | MIPS relocations need to be handled specially. Sigh. */ | |
11888 | ||
11889 | bfd_byte * | |
9719ad41 RS |
11890 | _bfd_elf_mips_get_relocated_section_contents |
11891 | (bfd *abfd, | |
11892 | struct bfd_link_info *link_info, | |
11893 | struct bfd_link_order *link_order, | |
11894 | bfd_byte *data, | |
11895 | bfd_boolean relocatable, | |
11896 | asymbol **symbols) | |
b49e97c9 TS |
11897 | { |
11898 | /* Get enough memory to hold the stuff */ | |
11899 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
11900 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 11901 | bfd_size_type sz; |
b49e97c9 TS |
11902 | |
11903 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
11904 | arelent **reloc_vector = NULL; | |
11905 | long reloc_count; | |
11906 | ||
11907 | if (reloc_size < 0) | |
11908 | goto error_return; | |
11909 | ||
9719ad41 | 11910 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
11911 | if (reloc_vector == NULL && reloc_size != 0) |
11912 | goto error_return; | |
11913 | ||
11914 | /* read in the section */ | |
eea6121a AM |
11915 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
11916 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
11917 | goto error_return; |
11918 | ||
b49e97c9 TS |
11919 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
11920 | input_section, | |
11921 | reloc_vector, | |
11922 | symbols); | |
11923 | if (reloc_count < 0) | |
11924 | goto error_return; | |
11925 | ||
11926 | if (reloc_count > 0) | |
11927 | { | |
11928 | arelent **parent; | |
11929 | /* for mips */ | |
11930 | int gp_found; | |
11931 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
11932 | ||
11933 | { | |
11934 | struct bfd_hash_entry *h; | |
11935 | struct bfd_link_hash_entry *lh; | |
11936 | /* Skip all this stuff if we aren't mixing formats. */ | |
11937 | if (abfd && input_bfd | |
11938 | && abfd->xvec == input_bfd->xvec) | |
11939 | lh = 0; | |
11940 | else | |
11941 | { | |
b34976b6 | 11942 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
11943 | lh = (struct bfd_link_hash_entry *) h; |
11944 | } | |
11945 | lookup: | |
11946 | if (lh) | |
11947 | { | |
11948 | switch (lh->type) | |
11949 | { | |
11950 | case bfd_link_hash_undefined: | |
11951 | case bfd_link_hash_undefweak: | |
11952 | case bfd_link_hash_common: | |
11953 | gp_found = 0; | |
11954 | break; | |
11955 | case bfd_link_hash_defined: | |
11956 | case bfd_link_hash_defweak: | |
11957 | gp_found = 1; | |
11958 | gp = lh->u.def.value; | |
11959 | break; | |
11960 | case bfd_link_hash_indirect: | |
11961 | case bfd_link_hash_warning: | |
11962 | lh = lh->u.i.link; | |
11963 | /* @@FIXME ignoring warning for now */ | |
11964 | goto lookup; | |
11965 | case bfd_link_hash_new: | |
11966 | default: | |
11967 | abort (); | |
11968 | } | |
11969 | } | |
11970 | else | |
11971 | gp_found = 0; | |
11972 | } | |
11973 | /* end mips */ | |
9719ad41 | 11974 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 11975 | { |
9719ad41 | 11976 | char *error_message = NULL; |
b49e97c9 TS |
11977 | bfd_reloc_status_type r; |
11978 | ||
11979 | /* Specific to MIPS: Deal with relocation types that require | |
11980 | knowing the gp of the output bfd. */ | |
11981 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 11982 | |
8236346f EC |
11983 | /* If we've managed to find the gp and have a special |
11984 | function for the relocation then go ahead, else default | |
11985 | to the generic handling. */ | |
11986 | if (gp_found | |
11987 | && (*parent)->howto->special_function | |
11988 | == _bfd_mips_elf32_gprel16_reloc) | |
11989 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
11990 | input_section, relocatable, | |
11991 | data, gp); | |
11992 | else | |
86324f90 | 11993 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
11994 | input_section, |
11995 | relocatable ? abfd : NULL, | |
11996 | &error_message); | |
b49e97c9 | 11997 | |
1049f94e | 11998 | if (relocatable) |
b49e97c9 TS |
11999 | { |
12000 | asection *os = input_section->output_section; | |
12001 | ||
12002 | /* A partial link, so keep the relocs */ | |
12003 | os->orelocation[os->reloc_count] = *parent; | |
12004 | os->reloc_count++; | |
12005 | } | |
12006 | ||
12007 | if (r != bfd_reloc_ok) | |
12008 | { | |
12009 | switch (r) | |
12010 | { | |
12011 | case bfd_reloc_undefined: | |
12012 | if (!((*link_info->callbacks->undefined_symbol) | |
12013 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 12014 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
12015 | goto error_return; |
12016 | break; | |
12017 | case bfd_reloc_dangerous: | |
9719ad41 | 12018 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
12019 | if (!((*link_info->callbacks->reloc_dangerous) |
12020 | (link_info, error_message, input_bfd, input_section, | |
12021 | (*parent)->address))) | |
12022 | goto error_return; | |
12023 | break; | |
12024 | case bfd_reloc_overflow: | |
12025 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
12026 | (link_info, NULL, |
12027 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
12028 | (*parent)->howto->name, (*parent)->addend, |
12029 | input_bfd, input_section, (*parent)->address))) | |
12030 | goto error_return; | |
12031 | break; | |
12032 | case bfd_reloc_outofrange: | |
12033 | default: | |
12034 | abort (); | |
12035 | break; | |
12036 | } | |
12037 | ||
12038 | } | |
12039 | } | |
12040 | } | |
12041 | if (reloc_vector != NULL) | |
12042 | free (reloc_vector); | |
12043 | return data; | |
12044 | ||
12045 | error_return: | |
12046 | if (reloc_vector != NULL) | |
12047 | free (reloc_vector); | |
12048 | return NULL; | |
12049 | } | |
12050 | \f | |
df58fc94 RS |
12051 | static bfd_boolean |
12052 | mips_elf_relax_delete_bytes (bfd *abfd, | |
12053 | asection *sec, bfd_vma addr, int count) | |
12054 | { | |
12055 | Elf_Internal_Shdr *symtab_hdr; | |
12056 | unsigned int sec_shndx; | |
12057 | bfd_byte *contents; | |
12058 | Elf_Internal_Rela *irel, *irelend; | |
12059 | Elf_Internal_Sym *isym; | |
12060 | Elf_Internal_Sym *isymend; | |
12061 | struct elf_link_hash_entry **sym_hashes; | |
12062 | struct elf_link_hash_entry **end_hashes; | |
12063 | struct elf_link_hash_entry **start_hashes; | |
12064 | unsigned int symcount; | |
12065 | ||
12066 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
12067 | contents = elf_section_data (sec)->this_hdr.contents; | |
12068 | ||
12069 | irel = elf_section_data (sec)->relocs; | |
12070 | irelend = irel + sec->reloc_count; | |
12071 | ||
12072 | /* Actually delete the bytes. */ | |
12073 | memmove (contents + addr, contents + addr + count, | |
12074 | (size_t) (sec->size - addr - count)); | |
12075 | sec->size -= count; | |
12076 | ||
12077 | /* Adjust all the relocs. */ | |
12078 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
12079 | { | |
12080 | /* Get the new reloc address. */ | |
12081 | if (irel->r_offset > addr) | |
12082 | irel->r_offset -= count; | |
12083 | } | |
12084 | ||
12085 | BFD_ASSERT (addr % 2 == 0); | |
12086 | BFD_ASSERT (count % 2 == 0); | |
12087 | ||
12088 | /* Adjust the local symbols defined in this section. */ | |
12089 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12090 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12091 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 12092 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
12093 | isym->st_value -= count; |
12094 | ||
12095 | /* Now adjust the global symbols defined in this section. */ | |
12096 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
12097 | - symtab_hdr->sh_info); | |
12098 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
12099 | end_hashes = sym_hashes + symcount; | |
12100 | ||
12101 | for (; sym_hashes < end_hashes; sym_hashes++) | |
12102 | { | |
12103 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
12104 | ||
12105 | if ((sym_hash->root.type == bfd_link_hash_defined | |
12106 | || sym_hash->root.type == bfd_link_hash_defweak) | |
12107 | && sym_hash->root.u.def.section == sec) | |
12108 | { | |
2309ddf2 | 12109 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 12110 | |
df58fc94 RS |
12111 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
12112 | value &= MINUS_TWO; | |
12113 | if (value > addr) | |
12114 | sym_hash->root.u.def.value -= count; | |
12115 | } | |
12116 | } | |
12117 | ||
12118 | return TRUE; | |
12119 | } | |
12120 | ||
12121 | ||
12122 | /* Opcodes needed for microMIPS relaxation as found in | |
12123 | opcodes/micromips-opc.c. */ | |
12124 | ||
12125 | struct opcode_descriptor { | |
12126 | unsigned long match; | |
12127 | unsigned long mask; | |
12128 | }; | |
12129 | ||
12130 | /* The $ra register aka $31. */ | |
12131 | ||
12132 | #define RA 31 | |
12133 | ||
12134 | /* 32-bit instruction format register fields. */ | |
12135 | ||
12136 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
12137 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
12138 | ||
12139 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
12140 | ||
12141 | #define OP16_VALID_REG(r) \ | |
12142 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
12143 | ||
12144 | ||
12145 | /* 32-bit and 16-bit branches. */ | |
12146 | ||
12147 | static const struct opcode_descriptor b_insns_32[] = { | |
12148 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
12149 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
12150 | { 0, 0 } /* End marker for find_match(). */ | |
12151 | }; | |
12152 | ||
12153 | static const struct opcode_descriptor bc_insn_32 = | |
12154 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
12155 | ||
12156 | static const struct opcode_descriptor bz_insn_32 = | |
12157 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
12158 | ||
12159 | static const struct opcode_descriptor bzal_insn_32 = | |
12160 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
12161 | ||
12162 | static const struct opcode_descriptor beq_insn_32 = | |
12163 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
12164 | ||
12165 | static const struct opcode_descriptor b_insn_16 = | |
12166 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
12167 | ||
12168 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 12169 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
12170 | |
12171 | ||
12172 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
12173 | ||
12174 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
12175 | eq and second the ne. This convention is used when replacing a | |
12176 | 32-bit BEQ/BNE with the 16-bit version. */ | |
12177 | ||
12178 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
12179 | ||
12180 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
12181 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
12182 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
12183 | { 0, 0 } /* End marker for find_match(). */ | |
12184 | }; | |
12185 | ||
12186 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
12187 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
12188 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
12189 | { 0, 0 } /* End marker for find_match(). */ | |
12190 | }; | |
12191 | ||
12192 | static const struct opcode_descriptor bzc_insns_32[] = { | |
12193 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
12194 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
12195 | { 0, 0 } /* End marker for find_match(). */ | |
12196 | }; | |
12197 | ||
12198 | static const struct opcode_descriptor bz_insns_16[] = { | |
12199 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
12200 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
12201 | { 0, 0 } /* End marker for find_match(). */ | |
12202 | }; | |
12203 | ||
12204 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
12205 | ||
12206 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0x17) + 2) | |
12207 | #define BZ16_REG_FIELD(r) \ | |
12208 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 7) | |
12209 | ||
12210 | ||
12211 | /* 32-bit instructions with a delay slot. */ | |
12212 | ||
12213 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
12214 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
12215 | ||
12216 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
12217 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
12218 | ||
12219 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
12220 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
12221 | ||
12222 | static const struct opcode_descriptor j_insn_32 = | |
12223 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
12224 | ||
12225 | static const struct opcode_descriptor jalr_insn_32 = | |
12226 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
12227 | ||
12228 | /* This table can be compacted, because no opcode replacement is made. */ | |
12229 | ||
12230 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
12231 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
12232 | ||
12233 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
12234 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
12235 | ||
12236 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
12237 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
12238 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
12239 | { 0, 0 } /* End marker for find_match(). */ | |
12240 | }; | |
12241 | ||
12242 | /* This table can be compacted, because no opcode replacement is made. */ | |
12243 | ||
12244 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
12245 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
12246 | ||
12247 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
12248 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
12249 | { 0, 0 } /* End marker for find_match(). */ | |
12250 | }; | |
12251 | ||
12252 | ||
12253 | /* 16-bit instructions with a delay slot. */ | |
12254 | ||
12255 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
12256 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
12257 | ||
12258 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
12259 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
12260 | ||
12261 | static const struct opcode_descriptor jr_insn_16 = | |
12262 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
12263 | ||
12264 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
12265 | ||
12266 | /* This table can be compacted, because no opcode replacement is made. */ | |
12267 | ||
12268 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
12269 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
12270 | ||
12271 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
12272 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
12273 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
12274 | { 0, 0 } /* End marker for find_match(). */ | |
12275 | }; | |
12276 | ||
12277 | ||
12278 | /* LUI instruction. */ | |
12279 | ||
12280 | static const struct opcode_descriptor lui_insn = | |
12281 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
12282 | ||
12283 | ||
12284 | /* ADDIU instruction. */ | |
12285 | ||
12286 | static const struct opcode_descriptor addiu_insn = | |
12287 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
12288 | ||
12289 | static const struct opcode_descriptor addiupc_insn = | |
12290 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
12291 | ||
12292 | #define ADDIUPC_REG_FIELD(r) \ | |
12293 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
12294 | ||
12295 | ||
12296 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
12297 | ||
12298 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
12299 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
12300 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
12301 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
12302 | ||
12303 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
12304 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
12305 | ||
12306 | static const struct opcode_descriptor move_insns_32[] = { | |
12307 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ | |
12308 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ | |
12309 | { 0, 0 } /* End marker for find_match(). */ | |
12310 | }; | |
12311 | ||
12312 | static const struct opcode_descriptor move_insn_16 = | |
12313 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
12314 | ||
12315 | ||
12316 | /* NOP instructions. */ | |
12317 | ||
12318 | static const struct opcode_descriptor nop_insn_32 = | |
12319 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
12320 | ||
12321 | static const struct opcode_descriptor nop_insn_16 = | |
12322 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
12323 | ||
12324 | ||
12325 | /* Instruction match support. */ | |
12326 | ||
12327 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
12328 | ||
12329 | static int | |
12330 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
12331 | { | |
12332 | unsigned long indx; | |
12333 | ||
12334 | for (indx = 0; insn[indx].mask != 0; indx++) | |
12335 | if (MATCH (opcode, insn[indx])) | |
12336 | return indx; | |
12337 | ||
12338 | return -1; | |
12339 | } | |
12340 | ||
12341 | ||
12342 | /* Branch and delay slot decoding support. */ | |
12343 | ||
12344 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
12345 | return the minimum length of its delay slot, otherwise return 0. | |
12346 | Non-zero results are not definitive as we might be checking against | |
12347 | the second half of another instruction. */ | |
12348 | ||
12349 | static int | |
12350 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
12351 | { | |
12352 | unsigned long opcode; | |
12353 | int bdsize; | |
12354 | ||
12355 | opcode = bfd_get_16 (abfd, ptr); | |
12356 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
12357 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
12358 | bdsize = 4; | |
12359 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
12360 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
12361 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
12362 | bdsize = 2; | |
12363 | else | |
12364 | /* No delay slot. */ | |
12365 | bdsize = 0; | |
12366 | ||
12367 | return bdsize; | |
12368 | } | |
12369 | ||
12370 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
12371 | return the minimum length of its delay slot, otherwise return 0. | |
12372 | Non-zero results are not definitive as we might be checking against | |
12373 | the second half of another instruction. */ | |
12374 | ||
12375 | static int | |
12376 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
12377 | { | |
12378 | unsigned long opcode; | |
12379 | int bdsize; | |
12380 | ||
d21911ea | 12381 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12382 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
12383 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
12384 | bdsize = 4; | |
12385 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
12386 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
12387 | bdsize = 2; | |
12388 | else | |
12389 | /* No delay slot. */ | |
12390 | bdsize = 0; | |
12391 | ||
12392 | return bdsize; | |
12393 | } | |
12394 | ||
12395 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
12396 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
12397 | ||
12398 | static bfd_boolean | |
12399 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) | |
12400 | { | |
12401 | unsigned long opcode; | |
12402 | ||
12403 | opcode = bfd_get_16 (abfd, ptr); | |
12404 | if (MATCH (opcode, b_insn_16) | |
12405 | /* B16 */ | |
12406 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
12407 | /* JR16 */ | |
12408 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
12409 | /* BEQZ16, BNEZ16 */ | |
12410 | || (MATCH (opcode, jalr_insn_16_bd32) | |
12411 | /* JALR16 */ | |
12412 | && reg != JR16_REG (opcode) && reg != RA)) | |
12413 | return TRUE; | |
12414 | ||
12415 | return FALSE; | |
12416 | } | |
12417 | ||
12418 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
12419 | then return TRUE, otherwise FALSE. */ | |
12420 | ||
f41e5fcc | 12421 | static bfd_boolean |
df58fc94 RS |
12422 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
12423 | { | |
12424 | unsigned long opcode; | |
12425 | ||
d21911ea | 12426 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12427 | if (MATCH (opcode, j_insn_32) |
12428 | /* J */ | |
12429 | || MATCH (opcode, bc_insn_32) | |
12430 | /* BC1F, BC1T, BC2F, BC2T */ | |
12431 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
12432 | /* JAL, JALX */ | |
12433 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
12434 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
12435 | || (MATCH (opcode, bzal_insn_32) | |
12436 | /* BGEZAL, BLTZAL */ | |
12437 | && reg != OP32_SREG (opcode) && reg != RA) | |
12438 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
12439 | /* JALR, JALR.HB, BEQ, BNE */ | |
12440 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
12441 | return TRUE; | |
12442 | ||
12443 | return FALSE; | |
12444 | } | |
12445 | ||
80cab405 MR |
12446 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
12447 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
12448 | then return TRUE, otherwise FALSE. */ | |
df58fc94 RS |
12449 | |
12450 | static bfd_boolean | |
80cab405 MR |
12451 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
12452 | const Elf_Internal_Rela *internal_relocs, | |
12453 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 12454 | { |
80cab405 MR |
12455 | const Elf_Internal_Rela *irel; |
12456 | unsigned long opcode; | |
12457 | ||
d21911ea | 12458 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 MR |
12459 | if (find_match (opcode, bzc_insns_32) < 0) |
12460 | return FALSE; | |
df58fc94 RS |
12461 | |
12462 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
12463 | if (irel->r_offset == offset |
12464 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
12465 | return TRUE; | |
12466 | ||
df58fc94 RS |
12467 | return FALSE; |
12468 | } | |
80cab405 MR |
12469 | |
12470 | /* Bitsize checking. */ | |
12471 | #define IS_BITSIZE(val, N) \ | |
12472 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
12473 | - (1ULL << ((N) - 1))) == (val)) | |
12474 | ||
df58fc94 RS |
12475 | \f |
12476 | bfd_boolean | |
12477 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, | |
12478 | struct bfd_link_info *link_info, | |
12479 | bfd_boolean *again) | |
12480 | { | |
12481 | Elf_Internal_Shdr *symtab_hdr; | |
12482 | Elf_Internal_Rela *internal_relocs; | |
12483 | Elf_Internal_Rela *irel, *irelend; | |
12484 | bfd_byte *contents = NULL; | |
12485 | Elf_Internal_Sym *isymbuf = NULL; | |
12486 | ||
12487 | /* Assume nothing changes. */ | |
12488 | *again = FALSE; | |
12489 | ||
12490 | /* We don't have to do anything for a relocatable link, if | |
12491 | this section does not have relocs, or if this is not a | |
12492 | code section. */ | |
12493 | ||
12494 | if (link_info->relocatable | |
12495 | || (sec->flags & SEC_RELOC) == 0 | |
12496 | || sec->reloc_count == 0 | |
12497 | || (sec->flags & SEC_CODE) == 0) | |
12498 | return TRUE; | |
12499 | ||
12500 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12501 | ||
12502 | /* Get a copy of the native relocations. */ | |
12503 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 12504 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
12505 | link_info->keep_memory)); |
12506 | if (internal_relocs == NULL) | |
12507 | goto error_return; | |
12508 | ||
12509 | /* Walk through them looking for relaxing opportunities. */ | |
12510 | irelend = internal_relocs + sec->reloc_count; | |
12511 | for (irel = internal_relocs; irel < irelend; irel++) | |
12512 | { | |
12513 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
12514 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
12515 | bfd_boolean target_is_micromips_code_p; | |
12516 | unsigned long opcode; | |
12517 | bfd_vma symval; | |
12518 | bfd_vma pcrval; | |
2309ddf2 | 12519 | bfd_byte *ptr; |
df58fc94 RS |
12520 | int fndopc; |
12521 | ||
12522 | /* The number of bytes to delete for relaxation and from where | |
12523 | to delete these bytes starting at irel->r_offset. */ | |
12524 | int delcnt = 0; | |
12525 | int deloff = 0; | |
12526 | ||
12527 | /* If this isn't something that can be relaxed, then ignore | |
12528 | this reloc. */ | |
12529 | if (r_type != R_MICROMIPS_HI16 | |
12530 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 12531 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
12532 | continue; |
12533 | ||
12534 | /* Get the section contents if we haven't done so already. */ | |
12535 | if (contents == NULL) | |
12536 | { | |
12537 | /* Get cached copy if it exists. */ | |
12538 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
12539 | contents = elf_section_data (sec)->this_hdr.contents; | |
12540 | /* Go get them off disk. */ | |
12541 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
12542 | goto error_return; | |
12543 | } | |
2309ddf2 | 12544 | ptr = contents + irel->r_offset; |
df58fc94 RS |
12545 | |
12546 | /* Read this BFD's local symbols if we haven't done so already. */ | |
12547 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
12548 | { | |
12549 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12550 | if (isymbuf == NULL) | |
12551 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
12552 | symtab_hdr->sh_info, 0, | |
12553 | NULL, NULL, NULL); | |
12554 | if (isymbuf == NULL) | |
12555 | goto error_return; | |
12556 | } | |
12557 | ||
12558 | /* Get the value of the symbol referred to by the reloc. */ | |
12559 | if (r_symndx < symtab_hdr->sh_info) | |
12560 | { | |
12561 | /* A local symbol. */ | |
12562 | Elf_Internal_Sym *isym; | |
12563 | asection *sym_sec; | |
12564 | ||
12565 | isym = isymbuf + r_symndx; | |
12566 | if (isym->st_shndx == SHN_UNDEF) | |
12567 | sym_sec = bfd_und_section_ptr; | |
12568 | else if (isym->st_shndx == SHN_ABS) | |
12569 | sym_sec = bfd_abs_section_ptr; | |
12570 | else if (isym->st_shndx == SHN_COMMON) | |
12571 | sym_sec = bfd_com_section_ptr; | |
12572 | else | |
12573 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
12574 | symval = (isym->st_value | |
12575 | + sym_sec->output_section->vma | |
12576 | + sym_sec->output_offset); | |
12577 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
12578 | } | |
12579 | else | |
12580 | { | |
12581 | unsigned long indx; | |
12582 | struct elf_link_hash_entry *h; | |
12583 | ||
12584 | /* An external symbol. */ | |
12585 | indx = r_symndx - symtab_hdr->sh_info; | |
12586 | h = elf_sym_hashes (abfd)[indx]; | |
12587 | BFD_ASSERT (h != NULL); | |
12588 | ||
12589 | if (h->root.type != bfd_link_hash_defined | |
12590 | && h->root.type != bfd_link_hash_defweak) | |
12591 | /* This appears to be a reference to an undefined | |
12592 | symbol. Just ignore it -- it will be caught by the | |
12593 | regular reloc processing. */ | |
12594 | continue; | |
12595 | ||
12596 | symval = (h->root.u.def.value | |
12597 | + h->root.u.def.section->output_section->vma | |
12598 | + h->root.u.def.section->output_offset); | |
12599 | target_is_micromips_code_p = (!h->needs_plt | |
12600 | && ELF_ST_IS_MICROMIPS (h->other)); | |
12601 | } | |
12602 | ||
12603 | ||
12604 | /* For simplicity of coding, we are going to modify the | |
12605 | section contents, the section relocs, and the BFD symbol | |
12606 | table. We must tell the rest of the code not to free up this | |
12607 | information. It would be possible to instead create a table | |
12608 | of changes which have to be made, as is done in coff-mips.c; | |
12609 | that would be more work, but would require less memory when | |
12610 | the linker is run. */ | |
12611 | ||
12612 | /* Only 32-bit instructions relaxed. */ | |
12613 | if (irel->r_offset + 4 > sec->size) | |
12614 | continue; | |
12615 | ||
d21911ea | 12616 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12617 | |
12618 | /* This is the pc-relative distance from the instruction the | |
12619 | relocation is applied to, to the symbol referred. */ | |
12620 | pcrval = (symval | |
12621 | - (sec->output_section->vma + sec->output_offset) | |
12622 | - irel->r_offset); | |
12623 | ||
12624 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
12625 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or | |
12626 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
12627 | ||
12628 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) | |
12629 | ||
12630 | where pcrval has first to be adjusted to apply against the LO16 | |
12631 | location (we make the adjustment later on, when we have figured | |
12632 | out the offset). */ | |
12633 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) | |
12634 | { | |
80cab405 | 12635 | bfd_boolean bzc = FALSE; |
df58fc94 RS |
12636 | unsigned long nextopc; |
12637 | unsigned long reg; | |
12638 | bfd_vma offset; | |
12639 | ||
12640 | /* Give up if the previous reloc was a HI16 against this symbol | |
12641 | too. */ | |
12642 | if (irel > internal_relocs | |
12643 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
12644 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
12645 | continue; | |
12646 | ||
12647 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
12648 | if (irel + 1 >= irelend | |
12649 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
12650 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
12651 | continue; | |
12652 | ||
12653 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
12654 | if (irel + 2 >= irelend | |
12655 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
12656 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
12657 | continue; | |
12658 | ||
80cab405 MR |
12659 | /* See if the LUI instruction *might* be in a branch delay slot. |
12660 | We check whether what looks like a 16-bit branch or jump is | |
12661 | actually an immediate argument to a compact branch, and let | |
12662 | it through if so. */ | |
df58fc94 | 12663 | if (irel->r_offset >= 2 |
2309ddf2 | 12664 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 12665 | && !(irel->r_offset >= 4 |
80cab405 MR |
12666 | && (bzc = check_relocated_bzc (abfd, |
12667 | ptr - 4, irel->r_offset - 4, | |
12668 | internal_relocs, irelend)))) | |
df58fc94 RS |
12669 | continue; |
12670 | if (irel->r_offset >= 4 | |
80cab405 | 12671 | && !bzc |
2309ddf2 | 12672 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
12673 | continue; |
12674 | ||
12675 | reg = OP32_SREG (opcode); | |
12676 | ||
12677 | /* We only relax adjacent instructions or ones separated with | |
12678 | a branch or jump that has a delay slot. The branch or jump | |
12679 | must not fiddle with the register used to hold the address. | |
12680 | Subtract 4 for the LUI itself. */ | |
12681 | offset = irel[1].r_offset - irel[0].r_offset; | |
12682 | switch (offset - 4) | |
12683 | { | |
12684 | case 0: | |
12685 | break; | |
12686 | case 2: | |
2309ddf2 | 12687 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12688 | break; |
12689 | continue; | |
12690 | case 4: | |
2309ddf2 | 12691 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12692 | break; |
12693 | continue; | |
12694 | default: | |
12695 | continue; | |
12696 | } | |
12697 | ||
d21911ea | 12698 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
12699 | |
12700 | /* Give up unless the same register is used with both | |
12701 | relocations. */ | |
12702 | if (OP32_SREG (nextopc) != reg) | |
12703 | continue; | |
12704 | ||
12705 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
12706 | and rounding up to take masking of the two LSBs into account. */ | |
12707 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
12708 | ||
12709 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
12710 | if (IS_BITSIZE (symval, 16)) | |
12711 | { | |
12712 | /* Fix the relocation's type. */ | |
12713 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
12714 | ||
12715 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
12716 | source register in bits 20:16. This register becomes $0 | |
12717 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
12718 | nextopc &= ~0x001f0000; | |
12719 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
12720 | contents + irel[1].r_offset); | |
12721 | } | |
12722 | ||
12723 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
12724 | We add 4 to take LUI deletion into account while checking | |
12725 | the PC-relative distance. */ | |
12726 | else if (symval % 4 == 0 | |
12727 | && IS_BITSIZE (pcrval + 4, 25) | |
12728 | && MATCH (nextopc, addiu_insn) | |
12729 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
12730 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
12731 | { | |
12732 | /* Fix the relocation's type. */ | |
12733 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
12734 | ||
12735 | /* Replace ADDIU with the ADDIUPC version. */ | |
12736 | nextopc = (addiupc_insn.match | |
12737 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
12738 | ||
d21911ea MR |
12739 | bfd_put_micromips_32 (abfd, nextopc, |
12740 | contents + irel[1].r_offset); | |
df58fc94 RS |
12741 | } |
12742 | ||
12743 | /* Can't do anything, give up, sigh... */ | |
12744 | else | |
12745 | continue; | |
12746 | ||
12747 | /* Fix the relocation's type. */ | |
12748 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
12749 | ||
12750 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
12751 | delcnt = 4; | |
12752 | deloff = 0; | |
12753 | } | |
12754 | ||
12755 | /* Compact branch relaxation -- due to the multitude of macros | |
12756 | employed by the compiler/assembler, compact branches are not | |
12757 | always generated. Obviously, this can/will be fixed elsewhere, | |
12758 | but there is no drawback in double checking it here. */ | |
12759 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12760 | && irel->r_offset + 5 < sec->size | |
12761 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12762 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
2309ddf2 | 12763 | && MATCH (bfd_get_16 (abfd, ptr + 4), nop_insn_16)) |
df58fc94 RS |
12764 | { |
12765 | unsigned long reg; | |
12766 | ||
12767 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12768 | ||
12769 | /* Replace BEQZ/BNEZ with the compact version. */ | |
12770 | opcode = (bzc_insns_32[fndopc].match | |
12771 | | BZC32_REG_FIELD (reg) | |
12772 | | (opcode & 0xffff)); /* Addend value. */ | |
12773 | ||
d21911ea | 12774 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 RS |
12775 | |
12776 | /* Delete the 16-bit delay slot NOP: two bytes from | |
12777 | irel->offset + 4. */ | |
12778 | delcnt = 2; | |
12779 | deloff = 4; | |
12780 | } | |
12781 | ||
12782 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
12783 | to check the distance from the next instruction, so subtract 2. */ | |
12784 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12785 | && IS_BITSIZE (pcrval - 2, 11) | |
12786 | && find_match (opcode, b_insns_32) >= 0) | |
12787 | { | |
12788 | /* Fix the relocation's type. */ | |
12789 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
12790 | ||
a8685210 | 12791 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12792 | bfd_put_16 (abfd, |
12793 | (b_insn_16.match | |
12794 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 12795 | ptr); |
df58fc94 RS |
12796 | |
12797 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12798 | delcnt = 2; | |
12799 | deloff = 2; | |
12800 | } | |
12801 | ||
12802 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
12803 | to check the distance from the next instruction, so subtract 2. */ | |
12804 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12805 | && IS_BITSIZE (pcrval - 2, 8) | |
12806 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12807 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
12808 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
12809 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
12810 | { | |
12811 | unsigned long reg; | |
12812 | ||
12813 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12814 | ||
12815 | /* Fix the relocation's type. */ | |
12816 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
12817 | ||
a8685210 | 12818 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12819 | bfd_put_16 (abfd, |
12820 | (bz_insns_16[fndopc].match | |
12821 | | BZ16_REG_FIELD (reg) | |
12822 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 12823 | ptr); |
df58fc94 RS |
12824 | |
12825 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12826 | delcnt = 2; | |
12827 | deloff = 2; | |
12828 | } | |
12829 | ||
12830 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
12831 | else if (r_type == R_MICROMIPS_26_S1 | |
12832 | && target_is_micromips_code_p | |
12833 | && irel->r_offset + 7 < sec->size | |
12834 | && MATCH (opcode, jal_insn_32_bd32)) | |
12835 | { | |
12836 | unsigned long n32opc; | |
12837 | bfd_boolean relaxed = FALSE; | |
12838 | ||
d21911ea | 12839 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
12840 | |
12841 | if (MATCH (n32opc, nop_insn_32)) | |
12842 | { | |
12843 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 12844 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 RS |
12845 | |
12846 | relaxed = TRUE; | |
12847 | } | |
12848 | else if (find_match (n32opc, move_insns_32) >= 0) | |
12849 | { | |
12850 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
12851 | bfd_put_16 (abfd, | |
12852 | (move_insn_16.match | |
12853 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
12854 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 12855 | ptr + 4); |
df58fc94 RS |
12856 | |
12857 | relaxed = TRUE; | |
12858 | } | |
12859 | /* Other 32-bit instructions relaxable to 16-bit | |
12860 | instructions will be handled here later. */ | |
12861 | ||
12862 | if (relaxed) | |
12863 | { | |
12864 | /* JAL with 32-bit delay slot that is changed to a JALS | |
12865 | with 16-bit delay slot. */ | |
d21911ea | 12866 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
12867 | |
12868 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
12869 | delcnt = 2; | |
12870 | deloff = 6; | |
12871 | } | |
12872 | } | |
12873 | ||
12874 | if (delcnt != 0) | |
12875 | { | |
12876 | /* Note that we've changed the relocs, section contents, etc. */ | |
12877 | elf_section_data (sec)->relocs = internal_relocs; | |
12878 | elf_section_data (sec)->this_hdr.contents = contents; | |
12879 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12880 | ||
12881 | /* Delete bytes depending on the delcnt and deloff. */ | |
12882 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
12883 | irel->r_offset + deloff, delcnt)) | |
12884 | goto error_return; | |
12885 | ||
12886 | /* That will change things, so we should relax again. | |
12887 | Note that this is not required, and it may be slow. */ | |
12888 | *again = TRUE; | |
12889 | } | |
12890 | } | |
12891 | ||
12892 | if (isymbuf != NULL | |
12893 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12894 | { | |
12895 | if (! link_info->keep_memory) | |
12896 | free (isymbuf); | |
12897 | else | |
12898 | { | |
12899 | /* Cache the symbols for elf_link_input_bfd. */ | |
12900 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12901 | } | |
12902 | } | |
12903 | ||
12904 | if (contents != NULL | |
12905 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12906 | { | |
12907 | if (! link_info->keep_memory) | |
12908 | free (contents); | |
12909 | else | |
12910 | { | |
12911 | /* Cache the section contents for elf_link_input_bfd. */ | |
12912 | elf_section_data (sec)->this_hdr.contents = contents; | |
12913 | } | |
12914 | } | |
12915 | ||
12916 | if (internal_relocs != NULL | |
12917 | && elf_section_data (sec)->relocs != internal_relocs) | |
12918 | free (internal_relocs); | |
12919 | ||
12920 | return TRUE; | |
12921 | ||
12922 | error_return: | |
12923 | if (isymbuf != NULL | |
12924 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12925 | free (isymbuf); | |
12926 | if (contents != NULL | |
12927 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12928 | free (contents); | |
12929 | if (internal_relocs != NULL | |
12930 | && elf_section_data (sec)->relocs != internal_relocs) | |
12931 | free (internal_relocs); | |
12932 | ||
12933 | return FALSE; | |
12934 | } | |
12935 | \f | |
b49e97c9 TS |
12936 | /* Create a MIPS ELF linker hash table. */ |
12937 | ||
12938 | struct bfd_link_hash_table * | |
9719ad41 | 12939 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
12940 | { |
12941 | struct mips_elf_link_hash_table *ret; | |
12942 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
12943 | ||
7bf52ea2 | 12944 | ret = bfd_zmalloc (amt); |
9719ad41 | 12945 | if (ret == NULL) |
b49e97c9 TS |
12946 | return NULL; |
12947 | ||
66eb6687 AM |
12948 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
12949 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
12950 | sizeof (struct mips_elf_link_hash_entry), |
12951 | MIPS_ELF_DATA)) | |
b49e97c9 | 12952 | { |
e2d34d7d | 12953 | free (ret); |
b49e97c9 TS |
12954 | return NULL; |
12955 | } | |
12956 | ||
b49e97c9 TS |
12957 | return &ret->root.root; |
12958 | } | |
0a44bf69 RS |
12959 | |
12960 | /* Likewise, but indicate that the target is VxWorks. */ | |
12961 | ||
12962 | struct bfd_link_hash_table * | |
12963 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
12964 | { | |
12965 | struct bfd_link_hash_table *ret; | |
12966 | ||
12967 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
12968 | if (ret) | |
12969 | { | |
12970 | struct mips_elf_link_hash_table *htab; | |
12971 | ||
12972 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
12973 | htab->use_plts_and_copy_relocs = TRUE; |
12974 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
12975 | } |
12976 | return ret; | |
12977 | } | |
861fb55a DJ |
12978 | |
12979 | /* A function that the linker calls if we are allowed to use PLTs | |
12980 | and copy relocs. */ | |
12981 | ||
12982 | void | |
12983 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
12984 | { | |
12985 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
12986 | } | |
b49e97c9 TS |
12987 | \f |
12988 | /* We need to use a special link routine to handle the .reginfo and | |
12989 | the .mdebug sections. We need to merge all instances of these | |
12990 | sections together, not write them all out sequentially. */ | |
12991 | ||
b34976b6 | 12992 | bfd_boolean |
9719ad41 | 12993 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 12994 | { |
b49e97c9 TS |
12995 | asection *o; |
12996 | struct bfd_link_order *p; | |
12997 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
12998 | asection *rtproc_sec; | |
12999 | Elf32_RegInfo reginfo; | |
13000 | struct ecoff_debug_info debug; | |
861fb55a | 13001 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
13002 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
13003 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 13004 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 13005 | void *mdebug_handle = NULL; |
b49e97c9 TS |
13006 | asection *s; |
13007 | EXTR esym; | |
13008 | unsigned int i; | |
13009 | bfd_size_type amt; | |
0a44bf69 | 13010 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
13011 | |
13012 | static const char * const secname[] = | |
13013 | { | |
13014 | ".text", ".init", ".fini", ".data", | |
13015 | ".rodata", ".sdata", ".sbss", ".bss" | |
13016 | }; | |
13017 | static const int sc[] = | |
13018 | { | |
13019 | scText, scInit, scFini, scData, | |
13020 | scRData, scSData, scSBss, scBss | |
13021 | }; | |
13022 | ||
d4596a51 RS |
13023 | /* Sort the dynamic symbols so that those with GOT entries come after |
13024 | those without. */ | |
0a44bf69 | 13025 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
13026 | BFD_ASSERT (htab != NULL); |
13027 | ||
d4596a51 RS |
13028 | if (!mips_elf_sort_hash_table (abfd, info)) |
13029 | return FALSE; | |
b49e97c9 | 13030 | |
861fb55a DJ |
13031 | /* Create any scheduled LA25 stubs. */ |
13032 | hti.info = info; | |
13033 | hti.output_bfd = abfd; | |
13034 | hti.error = FALSE; | |
13035 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
13036 | if (hti.error) | |
13037 | return FALSE; | |
13038 | ||
b49e97c9 TS |
13039 | /* Get a value for the GP register. */ |
13040 | if (elf_gp (abfd) == 0) | |
13041 | { | |
13042 | struct bfd_link_hash_entry *h; | |
13043 | ||
b34976b6 | 13044 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 13045 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
13046 | elf_gp (abfd) = (h->u.def.value |
13047 | + h->u.def.section->output_section->vma | |
13048 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
13049 | else if (htab->is_vxworks |
13050 | && (h = bfd_link_hash_lookup (info->hash, | |
13051 | "_GLOBAL_OFFSET_TABLE_", | |
13052 | FALSE, FALSE, TRUE)) | |
13053 | && h->type == bfd_link_hash_defined) | |
13054 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
13055 | + h->u.def.section->output_offset | |
13056 | + h->u.def.value); | |
1049f94e | 13057 | else if (info->relocatable) |
b49e97c9 TS |
13058 | { |
13059 | bfd_vma lo = MINUS_ONE; | |
13060 | ||
13061 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 13062 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
13063 | if (o->vma < lo |
13064 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
13065 | lo = o->vma; | |
13066 | ||
13067 | /* And calculate GP relative to that. */ | |
0a44bf69 | 13068 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
13069 | } |
13070 | else | |
13071 | { | |
13072 | /* If the relocate_section function needs to do a reloc | |
13073 | involving the GP value, it should make a reloc_dangerous | |
13074 | callback to warn that GP is not defined. */ | |
13075 | } | |
13076 | } | |
13077 | ||
13078 | /* Go through the sections and collect the .reginfo and .mdebug | |
13079 | information. */ | |
13080 | reginfo_sec = NULL; | |
13081 | mdebug_sec = NULL; | |
13082 | gptab_data_sec = NULL; | |
13083 | gptab_bss_sec = NULL; | |
9719ad41 | 13084 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
13085 | { |
13086 | if (strcmp (o->name, ".reginfo") == 0) | |
13087 | { | |
13088 | memset (®info, 0, sizeof reginfo); | |
13089 | ||
13090 | /* We have found the .reginfo section in the output file. | |
13091 | Look through all the link_orders comprising it and merge | |
13092 | the information together. */ | |
8423293d | 13093 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13094 | { |
13095 | asection *input_section; | |
13096 | bfd *input_bfd; | |
13097 | Elf32_External_RegInfo ext; | |
13098 | Elf32_RegInfo sub; | |
13099 | ||
13100 | if (p->type != bfd_indirect_link_order) | |
13101 | { | |
13102 | if (p->type == bfd_data_link_order) | |
13103 | continue; | |
13104 | abort (); | |
13105 | } | |
13106 | ||
13107 | input_section = p->u.indirect.section; | |
13108 | input_bfd = input_section->owner; | |
13109 | ||
b49e97c9 | 13110 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 13111 | &ext, 0, sizeof ext)) |
b34976b6 | 13112 | return FALSE; |
b49e97c9 TS |
13113 | |
13114 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
13115 | ||
13116 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
13117 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
13118 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
13119 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
13120 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
13121 | ||
13122 | /* ri_gp_value is set by the function | |
13123 | mips_elf32_section_processing when the section is | |
13124 | finally written out. */ | |
13125 | ||
13126 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13127 | elf_link_input_bfd ignores this section. */ | |
13128 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13129 | } | |
13130 | ||
13131 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 13132 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
13133 | |
13134 | /* Skip this section later on (I don't think this currently | |
13135 | matters, but someday it might). */ | |
8423293d | 13136 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13137 | |
13138 | reginfo_sec = o; | |
13139 | } | |
13140 | ||
13141 | if (strcmp (o->name, ".mdebug") == 0) | |
13142 | { | |
13143 | struct extsym_info einfo; | |
13144 | bfd_vma last; | |
13145 | ||
13146 | /* We have found the .mdebug section in the output file. | |
13147 | Look through all the link_orders comprising it and merge | |
13148 | the information together. */ | |
13149 | symhdr->magic = swap->sym_magic; | |
13150 | /* FIXME: What should the version stamp be? */ | |
13151 | symhdr->vstamp = 0; | |
13152 | symhdr->ilineMax = 0; | |
13153 | symhdr->cbLine = 0; | |
13154 | symhdr->idnMax = 0; | |
13155 | symhdr->ipdMax = 0; | |
13156 | symhdr->isymMax = 0; | |
13157 | symhdr->ioptMax = 0; | |
13158 | symhdr->iauxMax = 0; | |
13159 | symhdr->issMax = 0; | |
13160 | symhdr->issExtMax = 0; | |
13161 | symhdr->ifdMax = 0; | |
13162 | symhdr->crfd = 0; | |
13163 | symhdr->iextMax = 0; | |
13164 | ||
13165 | /* We accumulate the debugging information itself in the | |
13166 | debug_info structure. */ | |
13167 | debug.line = NULL; | |
13168 | debug.external_dnr = NULL; | |
13169 | debug.external_pdr = NULL; | |
13170 | debug.external_sym = NULL; | |
13171 | debug.external_opt = NULL; | |
13172 | debug.external_aux = NULL; | |
13173 | debug.ss = NULL; | |
13174 | debug.ssext = debug.ssext_end = NULL; | |
13175 | debug.external_fdr = NULL; | |
13176 | debug.external_rfd = NULL; | |
13177 | debug.external_ext = debug.external_ext_end = NULL; | |
13178 | ||
13179 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 13180 | if (mdebug_handle == NULL) |
b34976b6 | 13181 | return FALSE; |
b49e97c9 TS |
13182 | |
13183 | esym.jmptbl = 0; | |
13184 | esym.cobol_main = 0; | |
13185 | esym.weakext = 0; | |
13186 | esym.reserved = 0; | |
13187 | esym.ifd = ifdNil; | |
13188 | esym.asym.iss = issNil; | |
13189 | esym.asym.st = stLocal; | |
13190 | esym.asym.reserved = 0; | |
13191 | esym.asym.index = indexNil; | |
13192 | last = 0; | |
13193 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
13194 | { | |
13195 | esym.asym.sc = sc[i]; | |
13196 | s = bfd_get_section_by_name (abfd, secname[i]); | |
13197 | if (s != NULL) | |
13198 | { | |
13199 | esym.asym.value = s->vma; | |
eea6121a | 13200 | last = s->vma + s->size; |
b49e97c9 TS |
13201 | } |
13202 | else | |
13203 | esym.asym.value = last; | |
13204 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
13205 | secname[i], &esym)) | |
b34976b6 | 13206 | return FALSE; |
b49e97c9 TS |
13207 | } |
13208 | ||
8423293d | 13209 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13210 | { |
13211 | asection *input_section; | |
13212 | bfd *input_bfd; | |
13213 | const struct ecoff_debug_swap *input_swap; | |
13214 | struct ecoff_debug_info input_debug; | |
13215 | char *eraw_src; | |
13216 | char *eraw_end; | |
13217 | ||
13218 | if (p->type != bfd_indirect_link_order) | |
13219 | { | |
13220 | if (p->type == bfd_data_link_order) | |
13221 | continue; | |
13222 | abort (); | |
13223 | } | |
13224 | ||
13225 | input_section = p->u.indirect.section; | |
13226 | input_bfd = input_section->owner; | |
13227 | ||
d5eaccd7 | 13228 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
13229 | { |
13230 | /* I don't know what a non MIPS ELF bfd would be | |
13231 | doing with a .mdebug section, but I don't really | |
13232 | want to deal with it. */ | |
13233 | continue; | |
13234 | } | |
13235 | ||
13236 | input_swap = (get_elf_backend_data (input_bfd) | |
13237 | ->elf_backend_ecoff_debug_swap); | |
13238 | ||
eea6121a | 13239 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
13240 | |
13241 | /* The ECOFF linking code expects that we have already | |
13242 | read in the debugging information and set up an | |
13243 | ecoff_debug_info structure, so we do that now. */ | |
13244 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
13245 | &input_debug)) | |
b34976b6 | 13246 | return FALSE; |
b49e97c9 TS |
13247 | |
13248 | if (! (bfd_ecoff_debug_accumulate | |
13249 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
13250 | &input_debug, input_swap, info))) | |
b34976b6 | 13251 | return FALSE; |
b49e97c9 TS |
13252 | |
13253 | /* Loop through the external symbols. For each one with | |
13254 | interesting information, try to find the symbol in | |
13255 | the linker global hash table and save the information | |
13256 | for the output external symbols. */ | |
13257 | eraw_src = input_debug.external_ext; | |
13258 | eraw_end = (eraw_src | |
13259 | + (input_debug.symbolic_header.iextMax | |
13260 | * input_swap->external_ext_size)); | |
13261 | for (; | |
13262 | eraw_src < eraw_end; | |
13263 | eraw_src += input_swap->external_ext_size) | |
13264 | { | |
13265 | EXTR ext; | |
13266 | const char *name; | |
13267 | struct mips_elf_link_hash_entry *h; | |
13268 | ||
9719ad41 | 13269 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
13270 | if (ext.asym.sc == scNil |
13271 | || ext.asym.sc == scUndefined | |
13272 | || ext.asym.sc == scSUndefined) | |
13273 | continue; | |
13274 | ||
13275 | name = input_debug.ssext + ext.asym.iss; | |
13276 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 13277 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
13278 | if (h == NULL || h->esym.ifd != -2) |
13279 | continue; | |
13280 | ||
13281 | if (ext.ifd != -1) | |
13282 | { | |
13283 | BFD_ASSERT (ext.ifd | |
13284 | < input_debug.symbolic_header.ifdMax); | |
13285 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
13286 | } | |
13287 | ||
13288 | h->esym = ext; | |
13289 | } | |
13290 | ||
13291 | /* Free up the information we just read. */ | |
13292 | free (input_debug.line); | |
13293 | free (input_debug.external_dnr); | |
13294 | free (input_debug.external_pdr); | |
13295 | free (input_debug.external_sym); | |
13296 | free (input_debug.external_opt); | |
13297 | free (input_debug.external_aux); | |
13298 | free (input_debug.ss); | |
13299 | free (input_debug.ssext); | |
13300 | free (input_debug.external_fdr); | |
13301 | free (input_debug.external_rfd); | |
13302 | free (input_debug.external_ext); | |
13303 | ||
13304 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13305 | elf_link_input_bfd ignores this section. */ | |
13306 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13307 | } | |
13308 | ||
13309 | if (SGI_COMPAT (abfd) && info->shared) | |
13310 | { | |
13311 | /* Create .rtproc section. */ | |
87e0a731 | 13312 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
13313 | if (rtproc_sec == NULL) |
13314 | { | |
13315 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
13316 | | SEC_LINKER_CREATED | SEC_READONLY); | |
13317 | ||
87e0a731 AM |
13318 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
13319 | ".rtproc", | |
13320 | flags); | |
b49e97c9 | 13321 | if (rtproc_sec == NULL |
b49e97c9 | 13322 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 13323 | return FALSE; |
b49e97c9 TS |
13324 | } |
13325 | ||
13326 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
13327 | info, rtproc_sec, | |
13328 | &debug)) | |
b34976b6 | 13329 | return FALSE; |
b49e97c9 TS |
13330 | } |
13331 | ||
13332 | /* Build the external symbol information. */ | |
13333 | einfo.abfd = abfd; | |
13334 | einfo.info = info; | |
13335 | einfo.debug = &debug; | |
13336 | einfo.swap = swap; | |
b34976b6 | 13337 | einfo.failed = FALSE; |
b49e97c9 | 13338 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 13339 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 13340 | if (einfo.failed) |
b34976b6 | 13341 | return FALSE; |
b49e97c9 TS |
13342 | |
13343 | /* Set the size of the .mdebug section. */ | |
eea6121a | 13344 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
13345 | |
13346 | /* Skip this section later on (I don't think this currently | |
13347 | matters, but someday it might). */ | |
8423293d | 13348 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13349 | |
13350 | mdebug_sec = o; | |
13351 | } | |
13352 | ||
0112cd26 | 13353 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
13354 | { |
13355 | const char *subname; | |
13356 | unsigned int c; | |
13357 | Elf32_gptab *tab; | |
13358 | Elf32_External_gptab *ext_tab; | |
13359 | unsigned int j; | |
13360 | ||
13361 | /* The .gptab.sdata and .gptab.sbss sections hold | |
13362 | information describing how the small data area would | |
13363 | change depending upon the -G switch. These sections | |
13364 | not used in executables files. */ | |
1049f94e | 13365 | if (! info->relocatable) |
b49e97c9 | 13366 | { |
8423293d | 13367 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13368 | { |
13369 | asection *input_section; | |
13370 | ||
13371 | if (p->type != bfd_indirect_link_order) | |
13372 | { | |
13373 | if (p->type == bfd_data_link_order) | |
13374 | continue; | |
13375 | abort (); | |
13376 | } | |
13377 | ||
13378 | input_section = p->u.indirect.section; | |
13379 | ||
13380 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13381 | elf_link_input_bfd ignores this section. */ | |
13382 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13383 | } | |
13384 | ||
13385 | /* Skip this section later on (I don't think this | |
13386 | currently matters, but someday it might). */ | |
8423293d | 13387 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13388 | |
13389 | /* Really remove the section. */ | |
5daa8fe7 | 13390 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
13391 | --abfd->section_count; |
13392 | ||
13393 | continue; | |
13394 | } | |
13395 | ||
13396 | /* There is one gptab for initialized data, and one for | |
13397 | uninitialized data. */ | |
13398 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
13399 | gptab_data_sec = o; | |
13400 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
13401 | gptab_bss_sec = o; | |
13402 | else | |
13403 | { | |
13404 | (*_bfd_error_handler) | |
13405 | (_("%s: illegal section name `%s'"), | |
13406 | bfd_get_filename (abfd), o->name); | |
13407 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 13408 | return FALSE; |
b49e97c9 TS |
13409 | } |
13410 | ||
13411 | /* The linker script always combines .gptab.data and | |
13412 | .gptab.sdata into .gptab.sdata, and likewise for | |
13413 | .gptab.bss and .gptab.sbss. It is possible that there is | |
13414 | no .sdata or .sbss section in the output file, in which | |
13415 | case we must change the name of the output section. */ | |
13416 | subname = o->name + sizeof ".gptab" - 1; | |
13417 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
13418 | { | |
13419 | if (o == gptab_data_sec) | |
13420 | o->name = ".gptab.data"; | |
13421 | else | |
13422 | o->name = ".gptab.bss"; | |
13423 | subname = o->name + sizeof ".gptab" - 1; | |
13424 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
13425 | } | |
13426 | ||
13427 | /* Set up the first entry. */ | |
13428 | c = 1; | |
13429 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 13430 | tab = bfd_malloc (amt); |
b49e97c9 | 13431 | if (tab == NULL) |
b34976b6 | 13432 | return FALSE; |
b49e97c9 TS |
13433 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
13434 | tab[0].gt_header.gt_unused = 0; | |
13435 | ||
13436 | /* Combine the input sections. */ | |
8423293d | 13437 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13438 | { |
13439 | asection *input_section; | |
13440 | bfd *input_bfd; | |
13441 | bfd_size_type size; | |
13442 | unsigned long last; | |
13443 | bfd_size_type gpentry; | |
13444 | ||
13445 | if (p->type != bfd_indirect_link_order) | |
13446 | { | |
13447 | if (p->type == bfd_data_link_order) | |
13448 | continue; | |
13449 | abort (); | |
13450 | } | |
13451 | ||
13452 | input_section = p->u.indirect.section; | |
13453 | input_bfd = input_section->owner; | |
13454 | ||
13455 | /* Combine the gptab entries for this input section one | |
13456 | by one. We know that the input gptab entries are | |
13457 | sorted by ascending -G value. */ | |
eea6121a | 13458 | size = input_section->size; |
b49e97c9 TS |
13459 | last = 0; |
13460 | for (gpentry = sizeof (Elf32_External_gptab); | |
13461 | gpentry < size; | |
13462 | gpentry += sizeof (Elf32_External_gptab)) | |
13463 | { | |
13464 | Elf32_External_gptab ext_gptab; | |
13465 | Elf32_gptab int_gptab; | |
13466 | unsigned long val; | |
13467 | unsigned long add; | |
b34976b6 | 13468 | bfd_boolean exact; |
b49e97c9 TS |
13469 | unsigned int look; |
13470 | ||
13471 | if (! (bfd_get_section_contents | |
9719ad41 RS |
13472 | (input_bfd, input_section, &ext_gptab, gpentry, |
13473 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
13474 | { |
13475 | free (tab); | |
b34976b6 | 13476 | return FALSE; |
b49e97c9 TS |
13477 | } |
13478 | ||
13479 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
13480 | &int_gptab); | |
13481 | val = int_gptab.gt_entry.gt_g_value; | |
13482 | add = int_gptab.gt_entry.gt_bytes - last; | |
13483 | ||
b34976b6 | 13484 | exact = FALSE; |
b49e97c9 TS |
13485 | for (look = 1; look < c; look++) |
13486 | { | |
13487 | if (tab[look].gt_entry.gt_g_value >= val) | |
13488 | tab[look].gt_entry.gt_bytes += add; | |
13489 | ||
13490 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 13491 | exact = TRUE; |
b49e97c9 TS |
13492 | } |
13493 | ||
13494 | if (! exact) | |
13495 | { | |
13496 | Elf32_gptab *new_tab; | |
13497 | unsigned int max; | |
13498 | ||
13499 | /* We need a new table entry. */ | |
13500 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 13501 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
13502 | if (new_tab == NULL) |
13503 | { | |
13504 | free (tab); | |
b34976b6 | 13505 | return FALSE; |
b49e97c9 TS |
13506 | } |
13507 | tab = new_tab; | |
13508 | tab[c].gt_entry.gt_g_value = val; | |
13509 | tab[c].gt_entry.gt_bytes = add; | |
13510 | ||
13511 | /* Merge in the size for the next smallest -G | |
13512 | value, since that will be implied by this new | |
13513 | value. */ | |
13514 | max = 0; | |
13515 | for (look = 1; look < c; look++) | |
13516 | { | |
13517 | if (tab[look].gt_entry.gt_g_value < val | |
13518 | && (max == 0 | |
13519 | || (tab[look].gt_entry.gt_g_value | |
13520 | > tab[max].gt_entry.gt_g_value))) | |
13521 | max = look; | |
13522 | } | |
13523 | if (max != 0) | |
13524 | tab[c].gt_entry.gt_bytes += | |
13525 | tab[max].gt_entry.gt_bytes; | |
13526 | ||
13527 | ++c; | |
13528 | } | |
13529 | ||
13530 | last = int_gptab.gt_entry.gt_bytes; | |
13531 | } | |
13532 | ||
13533 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13534 | elf_link_input_bfd ignores this section. */ | |
13535 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13536 | } | |
13537 | ||
13538 | /* The table must be sorted by -G value. */ | |
13539 | if (c > 2) | |
13540 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
13541 | ||
13542 | /* Swap out the table. */ | |
13543 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 13544 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
13545 | if (ext_tab == NULL) |
13546 | { | |
13547 | free (tab); | |
b34976b6 | 13548 | return FALSE; |
b49e97c9 TS |
13549 | } |
13550 | ||
13551 | for (j = 0; j < c; j++) | |
13552 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
13553 | free (tab); | |
13554 | ||
eea6121a | 13555 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
13556 | o->contents = (bfd_byte *) ext_tab; |
13557 | ||
13558 | /* Skip this section later on (I don't think this currently | |
13559 | matters, but someday it might). */ | |
8423293d | 13560 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13561 | } |
13562 | } | |
13563 | ||
13564 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 13565 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 13566 | return FALSE; |
b49e97c9 TS |
13567 | |
13568 | /* Now write out the computed sections. */ | |
13569 | ||
9719ad41 | 13570 | if (reginfo_sec != NULL) |
b49e97c9 TS |
13571 | { |
13572 | Elf32_External_RegInfo ext; | |
13573 | ||
13574 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 13575 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 13576 | return FALSE; |
b49e97c9 TS |
13577 | } |
13578 | ||
9719ad41 | 13579 | if (mdebug_sec != NULL) |
b49e97c9 TS |
13580 | { |
13581 | BFD_ASSERT (abfd->output_has_begun); | |
13582 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
13583 | swap, info, | |
13584 | mdebug_sec->filepos)) | |
b34976b6 | 13585 | return FALSE; |
b49e97c9 TS |
13586 | |
13587 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
13588 | } | |
13589 | ||
9719ad41 | 13590 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
13591 | { |
13592 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
13593 | gptab_data_sec->contents, | |
eea6121a | 13594 | 0, gptab_data_sec->size)) |
b34976b6 | 13595 | return FALSE; |
b49e97c9 TS |
13596 | } |
13597 | ||
9719ad41 | 13598 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
13599 | { |
13600 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
13601 | gptab_bss_sec->contents, | |
eea6121a | 13602 | 0, gptab_bss_sec->size)) |
b34976b6 | 13603 | return FALSE; |
b49e97c9 TS |
13604 | } |
13605 | ||
13606 | if (SGI_COMPAT (abfd)) | |
13607 | { | |
13608 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
13609 | if (rtproc_sec != NULL) | |
13610 | { | |
13611 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
13612 | rtproc_sec->contents, | |
eea6121a | 13613 | 0, rtproc_sec->size)) |
b34976b6 | 13614 | return FALSE; |
b49e97c9 TS |
13615 | } |
13616 | } | |
13617 | ||
b34976b6 | 13618 | return TRUE; |
b49e97c9 TS |
13619 | } |
13620 | \f | |
64543e1a RS |
13621 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
13622 | ||
13623 | struct mips_mach_extension { | |
13624 | unsigned long extension, base; | |
13625 | }; | |
13626 | ||
13627 | ||
13628 | /* An array describing how BFD machines relate to one another. The entries | |
13629 | are ordered topologically with MIPS I extensions listed last. */ | |
13630 | ||
13631 | static const struct mips_mach_extension mips_mach_extensions[] = { | |
6f179bd0 | 13632 | /* MIPS64r2 extensions. */ |
432233b3 | 13633 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, |
dd6a37e7 | 13634 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, |
6f179bd0 AN |
13635 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, |
13636 | ||
64543e1a | 13637 | /* MIPS64 extensions. */ |
5f74bc13 | 13638 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a | 13639 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
52b6b6b9 | 13640 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, |
fd503541 | 13641 | { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64 }, |
64543e1a RS |
13642 | |
13643 | /* MIPS V extensions. */ | |
13644 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
13645 | ||
13646 | /* R10000 extensions. */ | |
13647 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
3aa3176b TS |
13648 | { bfd_mach_mips14000, bfd_mach_mips10000 }, |
13649 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
64543e1a RS |
13650 | |
13651 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
13652 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
13653 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
13654 | many libraries will just use the core ISA. Perhaps we could add | |
13655 | some sort of ASE flag if this ever proves a problem. */ | |
13656 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
13657 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
13658 | ||
13659 | /* MIPS IV extensions. */ | |
13660 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
13661 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
13662 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 13663 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 13664 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
13665 | |
13666 | /* VR4100 extensions. */ | |
13667 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
13668 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
13669 | ||
13670 | /* MIPS III extensions. */ | |
350cc38d MS |
13671 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
13672 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
13673 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
13674 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
13675 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
13676 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
13677 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
13678 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
13679 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
e407c74b | 13680 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
64543e1a RS |
13681 | |
13682 | /* MIPS32 extensions. */ | |
13683 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
13684 | ||
13685 | /* MIPS II extensions. */ | |
13686 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
13687 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
13688 | ||
13689 | /* MIPS I extensions. */ | |
13690 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
13691 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
13692 | }; | |
13693 | ||
13694 | ||
13695 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
13696 | ||
13697 | static bfd_boolean | |
9719ad41 | 13698 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
13699 | { |
13700 | size_t i; | |
13701 | ||
c5211a54 RS |
13702 | if (extension == base) |
13703 | return TRUE; | |
13704 | ||
13705 | if (base == bfd_mach_mipsisa32 | |
13706 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
13707 | return TRUE; | |
13708 | ||
13709 | if (base == bfd_mach_mipsisa32r2 | |
13710 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
13711 | return TRUE; | |
13712 | ||
13713 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 13714 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
13715 | { |
13716 | extension = mips_mach_extensions[i].base; | |
13717 | if (extension == base) | |
13718 | return TRUE; | |
13719 | } | |
64543e1a | 13720 | |
c5211a54 | 13721 | return FALSE; |
64543e1a RS |
13722 | } |
13723 | ||
13724 | ||
13725 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 13726 | |
b34976b6 | 13727 | static bfd_boolean |
9719ad41 | 13728 | mips_32bit_flags_p (flagword flags) |
00707a0e | 13729 | { |
64543e1a RS |
13730 | return ((flags & EF_MIPS_32BITMODE) != 0 |
13731 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
13732 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
13733 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
13734 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
13735 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
13736 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
13737 | } |
13738 | ||
64543e1a | 13739 | |
2cf19d5c JM |
13740 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
13741 | there are conflicting attributes. */ | |
13742 | static bfd_boolean | |
13743 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
13744 | { | |
13745 | obj_attribute *in_attr; | |
13746 | obj_attribute *out_attr; | |
6ae68ba3 MR |
13747 | bfd *abi_fp_bfd; |
13748 | ||
13749 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
13750 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
13751 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) | |
13752 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
2cf19d5c JM |
13753 | |
13754 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
13755 | { | |
13756 | /* This is the first object. Copy the attributes. */ | |
13757 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
13758 | ||
13759 | /* Use the Tag_null value to indicate the attributes have been | |
13760 | initialized. */ | |
13761 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
13762 | ||
13763 | return TRUE; | |
13764 | } | |
13765 | ||
13766 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
13767 | non-conflicting ones. */ | |
2cf19d5c JM |
13768 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
13769 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13770 | { | |
13771 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
13772 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
13773 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
6ae68ba3 | 13774 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) |
2cf19d5c JM |
13775 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) |
13776 | { | |
13777 | case 1: | |
13778 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13779 | { | |
13780 | case 2: | |
13781 | _bfd_error_handler | |
6ae68ba3 MR |
13782 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13783 | obfd, abi_fp_bfd, ibfd, "-mdouble-float", "-msingle-float"); | |
51a0dd31 | 13784 | break; |
2cf19d5c JM |
13785 | |
13786 | case 3: | |
13787 | _bfd_error_handler | |
6ae68ba3 MR |
13788 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13789 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13790 | break; |
13791 | ||
42554f6a TS |
13792 | case 4: |
13793 | _bfd_error_handler | |
6ae68ba3 MR |
13794 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13795 | obfd, abi_fp_bfd, ibfd, | |
13796 | "-mdouble-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13797 | break; |
13798 | ||
2cf19d5c | 13799 | default: |
6ae68ba3 MR |
13800 | _bfd_error_handler |
13801 | (_("Warning: %B uses %s (set by %B), " | |
13802 | "%B uses unknown floating point ABI %d"), | |
13803 | obfd, abi_fp_bfd, ibfd, | |
13804 | "-mdouble-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13805 | break; | |
2cf19d5c JM |
13806 | } |
13807 | break; | |
13808 | ||
13809 | case 2: | |
13810 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13811 | { | |
13812 | case 1: | |
13813 | _bfd_error_handler | |
6ae68ba3 MR |
13814 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13815 | obfd, abi_fp_bfd, ibfd, "-msingle-float", "-mdouble-float"); | |
51a0dd31 | 13816 | break; |
2cf19d5c JM |
13817 | |
13818 | case 3: | |
13819 | _bfd_error_handler | |
6ae68ba3 MR |
13820 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13821 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13822 | break; |
13823 | ||
42554f6a TS |
13824 | case 4: |
13825 | _bfd_error_handler | |
6ae68ba3 MR |
13826 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13827 | obfd, abi_fp_bfd, ibfd, | |
13828 | "-msingle-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13829 | break; |
13830 | ||
2cf19d5c | 13831 | default: |
6ae68ba3 MR |
13832 | _bfd_error_handler |
13833 | (_("Warning: %B uses %s (set by %B), " | |
13834 | "%B uses unknown floating point ABI %d"), | |
13835 | obfd, abi_fp_bfd, ibfd, | |
13836 | "-msingle-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13837 | break; | |
2cf19d5c JM |
13838 | } |
13839 | break; | |
13840 | ||
13841 | case 3: | |
13842 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13843 | { | |
13844 | case 1: | |
13845 | case 2: | |
42554f6a | 13846 | case 4: |
2cf19d5c | 13847 | _bfd_error_handler |
6ae68ba3 MR |
13848 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13849 | obfd, abi_fp_bfd, ibfd, "-msoft-float", "-mhard-float"); | |
2cf19d5c JM |
13850 | break; |
13851 | ||
13852 | default: | |
6ae68ba3 MR |
13853 | _bfd_error_handler |
13854 | (_("Warning: %B uses %s (set by %B), " | |
13855 | "%B uses unknown floating point ABI %d"), | |
13856 | obfd, abi_fp_bfd, ibfd, | |
13857 | "-msoft-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13858 | break; | |
2cf19d5c JM |
13859 | } |
13860 | break; | |
13861 | ||
42554f6a TS |
13862 | case 4: |
13863 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13864 | { | |
13865 | case 1: | |
13866 | _bfd_error_handler | |
6ae68ba3 MR |
13867 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13868 | obfd, abi_fp_bfd, ibfd, | |
13869 | "-mips32r2 -mfp64", "-mdouble-float"); | |
42554f6a TS |
13870 | break; |
13871 | ||
13872 | case 2: | |
13873 | _bfd_error_handler | |
6ae68ba3 MR |
13874 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13875 | obfd, abi_fp_bfd, ibfd, | |
13876 | "-mips32r2 -mfp64", "-msingle-float"); | |
42554f6a TS |
13877 | break; |
13878 | ||
13879 | case 3: | |
13880 | _bfd_error_handler | |
6ae68ba3 MR |
13881 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13882 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
42554f6a TS |
13883 | break; |
13884 | ||
13885 | default: | |
6ae68ba3 MR |
13886 | _bfd_error_handler |
13887 | (_("Warning: %B uses %s (set by %B), " | |
13888 | "%B uses unknown floating point ABI %d"), | |
13889 | obfd, abi_fp_bfd, ibfd, | |
13890 | "-mips32r2 -mfp64", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13891 | break; | |
42554f6a TS |
13892 | } |
13893 | break; | |
13894 | ||
2cf19d5c | 13895 | default: |
6ae68ba3 MR |
13896 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) |
13897 | { | |
13898 | case 1: | |
13899 | _bfd_error_handler | |
13900 | (_("Warning: %B uses unknown floating point ABI %d " | |
13901 | "(set by %B), %B uses %s"), | |
13902 | obfd, abi_fp_bfd, ibfd, | |
13903 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mdouble-float"); | |
13904 | break; | |
13905 | ||
13906 | case 2: | |
13907 | _bfd_error_handler | |
13908 | (_("Warning: %B uses unknown floating point ABI %d " | |
13909 | "(set by %B), %B uses %s"), | |
13910 | obfd, abi_fp_bfd, ibfd, | |
13911 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msingle-float"); | |
13912 | break; | |
13913 | ||
13914 | case 3: | |
13915 | _bfd_error_handler | |
13916 | (_("Warning: %B uses unknown floating point ABI %d " | |
13917 | "(set by %B), %B uses %s"), | |
13918 | obfd, abi_fp_bfd, ibfd, | |
13919 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msoft-float"); | |
13920 | break; | |
13921 | ||
13922 | case 4: | |
13923 | _bfd_error_handler | |
13924 | (_("Warning: %B uses unknown floating point ABI %d " | |
13925 | "(set by %B), %B uses %s"), | |
13926 | obfd, abi_fp_bfd, ibfd, | |
13927 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mips32r2 -mfp64"); | |
13928 | break; | |
13929 | ||
13930 | default: | |
13931 | _bfd_error_handler | |
13932 | (_("Warning: %B uses unknown floating point ABI %d " | |
13933 | "(set by %B), %B uses unknown floating point ABI %d"), | |
13934 | obfd, abi_fp_bfd, ibfd, | |
13935 | out_attr[Tag_GNU_MIPS_ABI_FP].i, | |
13936 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13937 | break; | |
13938 | } | |
13939 | break; | |
2cf19d5c JM |
13940 | } |
13941 | } | |
13942 | ||
13943 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
13944 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
13945 | ||
13946 | return TRUE; | |
13947 | } | |
13948 | ||
b49e97c9 TS |
13949 | /* Merge backend specific data from an object file to the output |
13950 | object file when linking. */ | |
13951 | ||
b34976b6 | 13952 | bfd_boolean |
9719ad41 | 13953 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
13954 | { |
13955 | flagword old_flags; | |
13956 | flagword new_flags; | |
b34976b6 AM |
13957 | bfd_boolean ok; |
13958 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
13959 | asection *sec; |
13960 | ||
58238693 | 13961 | /* Check if we have the same endianness. */ |
82e51918 | 13962 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
13963 | { |
13964 | (*_bfd_error_handler) | |
d003868e AM |
13965 | (_("%B: endianness incompatible with that of the selected emulation"), |
13966 | ibfd); | |
aa701218 AO |
13967 | return FALSE; |
13968 | } | |
b49e97c9 | 13969 | |
d5eaccd7 | 13970 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 13971 | return TRUE; |
b49e97c9 | 13972 | |
aa701218 AO |
13973 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
13974 | { | |
13975 | (*_bfd_error_handler) | |
d003868e AM |
13976 | (_("%B: ABI is incompatible with that of the selected emulation"), |
13977 | ibfd); | |
aa701218 AO |
13978 | return FALSE; |
13979 | } | |
13980 | ||
2cf19d5c JM |
13981 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
13982 | return FALSE; | |
13983 | ||
b49e97c9 TS |
13984 | new_flags = elf_elfheader (ibfd)->e_flags; |
13985 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
13986 | old_flags = elf_elfheader (obfd)->e_flags; | |
13987 | ||
13988 | if (! elf_flags_init (obfd)) | |
13989 | { | |
b34976b6 | 13990 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
13991 | elf_elfheader (obfd)->e_flags = new_flags; |
13992 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
13993 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
13994 | ||
13995 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 13996 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 13997 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 13998 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
13999 | { |
14000 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
14001 | bfd_get_mach (ibfd))) | |
b34976b6 | 14002 | return FALSE; |
b49e97c9 TS |
14003 | } |
14004 | ||
b34976b6 | 14005 | return TRUE; |
b49e97c9 TS |
14006 | } |
14007 | ||
14008 | /* Check flag compatibility. */ | |
14009 | ||
14010 | new_flags &= ~EF_MIPS_NOREORDER; | |
14011 | old_flags &= ~EF_MIPS_NOREORDER; | |
14012 | ||
f4416af6 AO |
14013 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
14014 | doesn't seem to matter. */ | |
14015 | new_flags &= ~EF_MIPS_XGOT; | |
14016 | old_flags &= ~EF_MIPS_XGOT; | |
14017 | ||
98a8deaf RS |
14018 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
14019 | just be able to ignore this. */ | |
14020 | new_flags &= ~EF_MIPS_UCODE; | |
14021 | old_flags &= ~EF_MIPS_UCODE; | |
14022 | ||
861fb55a DJ |
14023 | /* DSOs should only be linked with CPIC code. */ |
14024 | if ((ibfd->flags & DYNAMIC) != 0) | |
14025 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
0a44bf69 | 14026 | |
b49e97c9 | 14027 | if (new_flags == old_flags) |
b34976b6 | 14028 | return TRUE; |
b49e97c9 TS |
14029 | |
14030 | /* Check to see if the input BFD actually contains any sections. | |
14031 | If not, its flags may not have been initialised either, but it cannot | |
14032 | actually cause any incompatibility. */ | |
14033 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
14034 | { | |
14035 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
ed88c97e RS |
14036 | which are automatically generated by gas. Also ignore fake |
14037 | (s)common sections, since merely defining a common symbol does | |
14038 | not affect compatibility. */ | |
14039 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
14040 | && strcmp (sec->name, ".reginfo") | |
b49e97c9 | 14041 | && strcmp (sec->name, ".mdebug") |
eea6121a | 14042 | && (sec->size != 0 |
d13d89fa NS |
14043 | || (strcmp (sec->name, ".text") |
14044 | && strcmp (sec->name, ".data") | |
14045 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 14046 | { |
b34976b6 | 14047 | null_input_bfd = FALSE; |
b49e97c9 TS |
14048 | break; |
14049 | } | |
14050 | } | |
14051 | if (null_input_bfd) | |
b34976b6 | 14052 | return TRUE; |
b49e97c9 | 14053 | |
b34976b6 | 14054 | ok = TRUE; |
b49e97c9 | 14055 | |
143d77c5 EC |
14056 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
14057 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 14058 | { |
b49e97c9 | 14059 | (*_bfd_error_handler) |
861fb55a | 14060 | (_("%B: warning: linking abicalls files with non-abicalls files"), |
d003868e | 14061 | ibfd); |
143d77c5 | 14062 | ok = TRUE; |
b49e97c9 TS |
14063 | } |
14064 | ||
143d77c5 EC |
14065 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
14066 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
14067 | if (! (new_flags & EF_MIPS_PIC)) | |
14068 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
14069 | ||
14070 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
14071 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 14072 | |
64543e1a RS |
14073 | /* Compare the ISAs. */ |
14074 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 14075 | { |
64543e1a | 14076 | (*_bfd_error_handler) |
d003868e AM |
14077 | (_("%B: linking 32-bit code with 64-bit code"), |
14078 | ibfd); | |
64543e1a RS |
14079 | ok = FALSE; |
14080 | } | |
14081 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
14082 | { | |
14083 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
14084 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 14085 | { |
64543e1a RS |
14086 | /* Copy the architecture info from IBFD to OBFD. Also copy |
14087 | the 32-bit flag (if set) so that we continue to recognise | |
14088 | OBFD as a 32-bit binary. */ | |
14089 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
14090 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
14091 | elf_elfheader (obfd)->e_flags | |
14092 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14093 | ||
14094 | /* Copy across the ABI flags if OBFD doesn't use them | |
14095 | and if that was what caused us to treat IBFD as 32-bit. */ | |
14096 | if ((old_flags & EF_MIPS_ABI) == 0 | |
14097 | && mips_32bit_flags_p (new_flags) | |
14098 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
14099 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
14100 | } |
14101 | else | |
14102 | { | |
64543e1a | 14103 | /* The ISAs aren't compatible. */ |
b49e97c9 | 14104 | (*_bfd_error_handler) |
d003868e AM |
14105 | (_("%B: linking %s module with previous %s modules"), |
14106 | ibfd, | |
64543e1a RS |
14107 | bfd_printable_name (ibfd), |
14108 | bfd_printable_name (obfd)); | |
b34976b6 | 14109 | ok = FALSE; |
b49e97c9 | 14110 | } |
b49e97c9 TS |
14111 | } |
14112 | ||
64543e1a RS |
14113 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
14114 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14115 | ||
14116 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
14117 | does set EI_CLASS differently from any 32-bit ABI. */ |
14118 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
14119 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14120 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14121 | { | |
14122 | /* Only error if both are set (to different values). */ | |
14123 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
14124 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14125 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14126 | { | |
14127 | (*_bfd_error_handler) | |
d003868e AM |
14128 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
14129 | ibfd, | |
b49e97c9 TS |
14130 | elf_mips_abi_name (ibfd), |
14131 | elf_mips_abi_name (obfd)); | |
b34976b6 | 14132 | ok = FALSE; |
b49e97c9 TS |
14133 | } |
14134 | new_flags &= ~EF_MIPS_ABI; | |
14135 | old_flags &= ~EF_MIPS_ABI; | |
14136 | } | |
14137 | ||
df58fc94 RS |
14138 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together |
14139 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
fb39dac1 RS |
14140 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) |
14141 | { | |
df58fc94 RS |
14142 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; |
14143 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
14144 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
14145 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
14146 | int micro_mis = old_m16 && new_micro; | |
14147 | int m16_mis = old_micro && new_m16; | |
14148 | ||
14149 | if (m16_mis || micro_mis) | |
14150 | { | |
14151 | (*_bfd_error_handler) | |
14152 | (_("%B: ASE mismatch: linking %s module with previous %s modules"), | |
14153 | ibfd, | |
14154 | m16_mis ? "MIPS16" : "microMIPS", | |
14155 | m16_mis ? "microMIPS" : "MIPS16"); | |
14156 | ok = FALSE; | |
14157 | } | |
14158 | ||
fb39dac1 RS |
14159 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; |
14160 | ||
14161 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
14162 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
14163 | } | |
14164 | ||
b49e97c9 TS |
14165 | /* Warn about any other mismatches */ |
14166 | if (new_flags != old_flags) | |
14167 | { | |
14168 | (*_bfd_error_handler) | |
d003868e AM |
14169 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
14170 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 14171 | (unsigned long) old_flags); |
b34976b6 | 14172 | ok = FALSE; |
b49e97c9 TS |
14173 | } |
14174 | ||
14175 | if (! ok) | |
14176 | { | |
14177 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14178 | return FALSE; |
b49e97c9 TS |
14179 | } |
14180 | ||
b34976b6 | 14181 | return TRUE; |
b49e97c9 TS |
14182 | } |
14183 | ||
14184 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
14185 | ||
b34976b6 | 14186 | bfd_boolean |
9719ad41 | 14187 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
14188 | { |
14189 | BFD_ASSERT (!elf_flags_init (abfd) | |
14190 | || elf_elfheader (abfd)->e_flags == flags); | |
14191 | ||
14192 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
14193 | elf_flags_init (abfd) = TRUE; |
14194 | return TRUE; | |
b49e97c9 TS |
14195 | } |
14196 | ||
ad9563d6 CM |
14197 | char * |
14198 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
14199 | { | |
14200 | switch (dtag) | |
14201 | { | |
14202 | default: return ""; | |
14203 | case DT_MIPS_RLD_VERSION: | |
14204 | return "MIPS_RLD_VERSION"; | |
14205 | case DT_MIPS_TIME_STAMP: | |
14206 | return "MIPS_TIME_STAMP"; | |
14207 | case DT_MIPS_ICHECKSUM: | |
14208 | return "MIPS_ICHECKSUM"; | |
14209 | case DT_MIPS_IVERSION: | |
14210 | return "MIPS_IVERSION"; | |
14211 | case DT_MIPS_FLAGS: | |
14212 | return "MIPS_FLAGS"; | |
14213 | case DT_MIPS_BASE_ADDRESS: | |
14214 | return "MIPS_BASE_ADDRESS"; | |
14215 | case DT_MIPS_MSYM: | |
14216 | return "MIPS_MSYM"; | |
14217 | case DT_MIPS_CONFLICT: | |
14218 | return "MIPS_CONFLICT"; | |
14219 | case DT_MIPS_LIBLIST: | |
14220 | return "MIPS_LIBLIST"; | |
14221 | case DT_MIPS_LOCAL_GOTNO: | |
14222 | return "MIPS_LOCAL_GOTNO"; | |
14223 | case DT_MIPS_CONFLICTNO: | |
14224 | return "MIPS_CONFLICTNO"; | |
14225 | case DT_MIPS_LIBLISTNO: | |
14226 | return "MIPS_LIBLISTNO"; | |
14227 | case DT_MIPS_SYMTABNO: | |
14228 | return "MIPS_SYMTABNO"; | |
14229 | case DT_MIPS_UNREFEXTNO: | |
14230 | return "MIPS_UNREFEXTNO"; | |
14231 | case DT_MIPS_GOTSYM: | |
14232 | return "MIPS_GOTSYM"; | |
14233 | case DT_MIPS_HIPAGENO: | |
14234 | return "MIPS_HIPAGENO"; | |
14235 | case DT_MIPS_RLD_MAP: | |
14236 | return "MIPS_RLD_MAP"; | |
14237 | case DT_MIPS_DELTA_CLASS: | |
14238 | return "MIPS_DELTA_CLASS"; | |
14239 | case DT_MIPS_DELTA_CLASS_NO: | |
14240 | return "MIPS_DELTA_CLASS_NO"; | |
14241 | case DT_MIPS_DELTA_INSTANCE: | |
14242 | return "MIPS_DELTA_INSTANCE"; | |
14243 | case DT_MIPS_DELTA_INSTANCE_NO: | |
14244 | return "MIPS_DELTA_INSTANCE_NO"; | |
14245 | case DT_MIPS_DELTA_RELOC: | |
14246 | return "MIPS_DELTA_RELOC"; | |
14247 | case DT_MIPS_DELTA_RELOC_NO: | |
14248 | return "MIPS_DELTA_RELOC_NO"; | |
14249 | case DT_MIPS_DELTA_SYM: | |
14250 | return "MIPS_DELTA_SYM"; | |
14251 | case DT_MIPS_DELTA_SYM_NO: | |
14252 | return "MIPS_DELTA_SYM_NO"; | |
14253 | case DT_MIPS_DELTA_CLASSSYM: | |
14254 | return "MIPS_DELTA_CLASSSYM"; | |
14255 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
14256 | return "MIPS_DELTA_CLASSSYM_NO"; | |
14257 | case DT_MIPS_CXX_FLAGS: | |
14258 | return "MIPS_CXX_FLAGS"; | |
14259 | case DT_MIPS_PIXIE_INIT: | |
14260 | return "MIPS_PIXIE_INIT"; | |
14261 | case DT_MIPS_SYMBOL_LIB: | |
14262 | return "MIPS_SYMBOL_LIB"; | |
14263 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
14264 | return "MIPS_LOCALPAGE_GOTIDX"; | |
14265 | case DT_MIPS_LOCAL_GOTIDX: | |
14266 | return "MIPS_LOCAL_GOTIDX"; | |
14267 | case DT_MIPS_HIDDEN_GOTIDX: | |
14268 | return "MIPS_HIDDEN_GOTIDX"; | |
14269 | case DT_MIPS_PROTECTED_GOTIDX: | |
14270 | return "MIPS_PROTECTED_GOT_IDX"; | |
14271 | case DT_MIPS_OPTIONS: | |
14272 | return "MIPS_OPTIONS"; | |
14273 | case DT_MIPS_INTERFACE: | |
14274 | return "MIPS_INTERFACE"; | |
14275 | case DT_MIPS_DYNSTR_ALIGN: | |
14276 | return "DT_MIPS_DYNSTR_ALIGN"; | |
14277 | case DT_MIPS_INTERFACE_SIZE: | |
14278 | return "DT_MIPS_INTERFACE_SIZE"; | |
14279 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
14280 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
14281 | case DT_MIPS_PERF_SUFFIX: | |
14282 | return "DT_MIPS_PERF_SUFFIX"; | |
14283 | case DT_MIPS_COMPACT_SIZE: | |
14284 | return "DT_MIPS_COMPACT_SIZE"; | |
14285 | case DT_MIPS_GP_VALUE: | |
14286 | return "DT_MIPS_GP_VALUE"; | |
14287 | case DT_MIPS_AUX_DYNAMIC: | |
14288 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
14289 | case DT_MIPS_PLTGOT: |
14290 | return "DT_MIPS_PLTGOT"; | |
14291 | case DT_MIPS_RWPLT: | |
14292 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
14293 | } |
14294 | } | |
14295 | ||
b34976b6 | 14296 | bfd_boolean |
9719ad41 | 14297 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 14298 | { |
9719ad41 | 14299 | FILE *file = ptr; |
b49e97c9 TS |
14300 | |
14301 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
14302 | ||
14303 | /* Print normal ELF private data. */ | |
14304 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
14305 | ||
14306 | /* xgettext:c-format */ | |
14307 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
14308 | ||
14309 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
14310 | fprintf (file, _(" [abi=O32]")); | |
14311 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
14312 | fprintf (file, _(" [abi=O64]")); | |
14313 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
14314 | fprintf (file, _(" [abi=EABI32]")); | |
14315 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
14316 | fprintf (file, _(" [abi=EABI64]")); | |
14317 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
14318 | fprintf (file, _(" [abi unknown]")); | |
14319 | else if (ABI_N32_P (abfd)) | |
14320 | fprintf (file, _(" [abi=N32]")); | |
14321 | else if (ABI_64_P (abfd)) | |
14322 | fprintf (file, _(" [abi=64]")); | |
14323 | else | |
14324 | fprintf (file, _(" [no abi set]")); | |
14325 | ||
14326 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 14327 | fprintf (file, " [mips1]"); |
b49e97c9 | 14328 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 14329 | fprintf (file, " [mips2]"); |
b49e97c9 | 14330 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 14331 | fprintf (file, " [mips3]"); |
b49e97c9 | 14332 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 14333 | fprintf (file, " [mips4]"); |
b49e97c9 | 14334 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 14335 | fprintf (file, " [mips5]"); |
b49e97c9 | 14336 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 14337 | fprintf (file, " [mips32]"); |
b49e97c9 | 14338 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 14339 | fprintf (file, " [mips64]"); |
af7ee8bf | 14340 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 14341 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 14342 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 14343 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
14344 | else |
14345 | fprintf (file, _(" [unknown ISA]")); | |
14346 | ||
40d32fc6 | 14347 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 14348 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
14349 | |
14350 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 14351 | fprintf (file, " [mips16]"); |
40d32fc6 | 14352 | |
df58fc94 RS |
14353 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
14354 | fprintf (file, " [micromips]"); | |
14355 | ||
b49e97c9 | 14356 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 14357 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
14358 | else |
14359 | fprintf (file, _(" [not 32bitmode]")); | |
14360 | ||
c0e3f241 | 14361 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 14362 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
14363 | |
14364 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 14365 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
14366 | |
14367 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 14368 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
14369 | |
14370 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 14371 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
14372 | |
14373 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 14374 | fprintf (file, " [UCODE]"); |
c0e3f241 | 14375 | |
b49e97c9 TS |
14376 | fputc ('\n', file); |
14377 | ||
b34976b6 | 14378 | return TRUE; |
b49e97c9 | 14379 | } |
2f89ff8d | 14380 | |
b35d266b | 14381 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 14382 | { |
0112cd26 NC |
14383 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
14384 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14385 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
14386 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14387 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14388 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
14389 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 14390 | }; |
5e2b0d47 | 14391 | |
8992f0d7 TS |
14392 | /* Merge non visibility st_other attributes. Ensure that the |
14393 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
14394 | definiton of the symbol. */ | |
5e2b0d47 NC |
14395 | void |
14396 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
14397 | const Elf_Internal_Sym *isym, | |
14398 | bfd_boolean definition, | |
14399 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
14400 | { | |
8992f0d7 TS |
14401 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
14402 | { | |
14403 | unsigned char other; | |
14404 | ||
14405 | other = (definition ? isym->st_other : h->other); | |
14406 | other &= ~ELF_ST_VISIBILITY (-1); | |
14407 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
14408 | } | |
14409 | ||
14410 | if (!definition | |
5e2b0d47 NC |
14411 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
14412 | h->other |= STO_OPTIONAL; | |
14413 | } | |
12ac1cf5 NC |
14414 | |
14415 | /* Decide whether an undefined symbol is special and can be ignored. | |
14416 | This is the case for OPTIONAL symbols on IRIX. */ | |
14417 | bfd_boolean | |
14418 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
14419 | { | |
14420 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
14421 | } | |
e0764319 NC |
14422 | |
14423 | bfd_boolean | |
14424 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
14425 | { | |
14426 | return (sym->st_shndx == SHN_COMMON | |
14427 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
14428 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
14429 | } | |
861fb55a DJ |
14430 | |
14431 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
14432 | or (bfd_vma) -1 if it should not be included. */ | |
14433 | ||
14434 | bfd_vma | |
14435 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
14436 | const arelent *rel ATTRIBUTE_UNUSED) | |
14437 | { | |
14438 | return (plt->vma | |
14439 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
14440 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
14441 | } | |
14442 | ||
14443 | void | |
14444 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
14445 | { | |
14446 | struct mips_elf_link_hash_table *htab; | |
14447 | Elf_Internal_Ehdr *i_ehdrp; | |
14448 | ||
14449 | i_ehdrp = elf_elfheader (abfd); | |
14450 | if (link_info) | |
14451 | { | |
14452 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 NC |
14453 | BFD_ASSERT (htab != NULL); |
14454 | ||
861fb55a DJ |
14455 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
14456 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
14457 | } | |
14458 | } |