Commit | Line | Data |
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b49e97c9 | 1 | /* MIPS-specific support for ELF |
64543e1a | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
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 | { | |
145 | /* The global symbol in the GOT with the lowest index in the dynamic | |
146 | symbol table. */ | |
147 | struct elf_link_hash_entry *global_gotsym; | |
148 | /* The number of global .got entries. */ | |
149 | unsigned int global_gotno; | |
23cc69b6 RS |
150 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
151 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
152 | /* The number of .got slots used for TLS. */ |
153 | unsigned int tls_gotno; | |
154 | /* The first unused TLS .got entry. Used only during | |
155 | mips_elf_initialize_tls_index. */ | |
156 | unsigned int tls_assigned_gotno; | |
c224138d | 157 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 158 | unsigned int local_gotno; |
c224138d RS |
159 | /* The maximum number of page entries needed. */ |
160 | unsigned int page_gotno; | |
b49e97c9 TS |
161 | /* The number of local .got entries we have used. */ |
162 | unsigned int assigned_gotno; | |
b15e6682 AO |
163 | /* A hash table holding members of the got. */ |
164 | struct htab *got_entries; | |
c224138d RS |
165 | /* A hash table of mips_got_page_entry structures. */ |
166 | struct htab *got_page_entries; | |
f4416af6 AO |
167 | /* A hash table mapping input bfds to other mips_got_info. NULL |
168 | unless multi-got was necessary. */ | |
169 | struct htab *bfd2got; | |
170 | /* In multi-got links, a pointer to the next got (err, rather, most | |
171 | of the time, it points to the previous got). */ | |
172 | struct mips_got_info *next; | |
0f20cc35 DJ |
173 | /* This is the GOT index of the TLS LDM entry for the GOT, MINUS_ONE |
174 | for none, or MINUS_TWO for not yet assigned. This is needed | |
175 | because a single-GOT link may have multiple hash table entries | |
176 | for the LDM. It does not get initialized in multi-GOT mode. */ | |
177 | bfd_vma tls_ldm_offset; | |
f4416af6 AO |
178 | }; |
179 | ||
180 | /* Map an input bfd to a got in a multi-got link. */ | |
181 | ||
91d6fa6a NC |
182 | struct mips_elf_bfd2got_hash |
183 | { | |
f4416af6 AO |
184 | bfd *bfd; |
185 | struct mips_got_info *g; | |
186 | }; | |
187 | ||
188 | /* Structure passed when traversing the bfd2got hash table, used to | |
189 | create and merge bfd's gots. */ | |
190 | ||
191 | struct mips_elf_got_per_bfd_arg | |
192 | { | |
193 | /* A hashtable that maps bfds to gots. */ | |
194 | htab_t bfd2got; | |
195 | /* The output bfd. */ | |
196 | bfd *obfd; | |
197 | /* The link information. */ | |
198 | struct bfd_link_info *info; | |
199 | /* A pointer to the primary got, i.e., the one that's going to get | |
200 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
201 | DT_MIPS_GOTSYM. */ | |
202 | struct mips_got_info *primary; | |
203 | /* A non-primary got we're trying to merge with other input bfd's | |
204 | gots. */ | |
205 | struct mips_got_info *current; | |
206 | /* The maximum number of got entries that can be addressed with a | |
207 | 16-bit offset. */ | |
208 | unsigned int max_count; | |
c224138d RS |
209 | /* The maximum number of page entries needed by each got. */ |
210 | unsigned int max_pages; | |
0f20cc35 DJ |
211 | /* The total number of global entries which will live in the |
212 | primary got and be automatically relocated. This includes | |
213 | those not referenced by the primary GOT but included in | |
214 | the "master" GOT. */ | |
215 | unsigned int global_count; | |
f4416af6 AO |
216 | }; |
217 | ||
218 | /* Another structure used to pass arguments for got entries traversal. */ | |
219 | ||
220 | struct mips_elf_set_global_got_offset_arg | |
221 | { | |
222 | struct mips_got_info *g; | |
223 | int value; | |
224 | unsigned int needed_relocs; | |
225 | struct bfd_link_info *info; | |
b49e97c9 TS |
226 | }; |
227 | ||
0f20cc35 DJ |
228 | /* A structure used to count TLS relocations or GOT entries, for GOT |
229 | entry or ELF symbol table traversal. */ | |
230 | ||
231 | struct mips_elf_count_tls_arg | |
232 | { | |
233 | struct bfd_link_info *info; | |
234 | unsigned int needed; | |
235 | }; | |
236 | ||
f0abc2a1 AM |
237 | struct _mips_elf_section_data |
238 | { | |
239 | struct bfd_elf_section_data elf; | |
240 | union | |
241 | { | |
f0abc2a1 AM |
242 | bfd_byte *tdata; |
243 | } u; | |
244 | }; | |
245 | ||
246 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 247 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 248 | |
d5eaccd7 RS |
249 | #define is_mips_elf(bfd) \ |
250 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
251 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 252 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 253 | |
634835ae RS |
254 | /* The ABI says that every symbol used by dynamic relocations must have |
255 | a global GOT entry. Among other things, this provides the dynamic | |
256 | linker with a free, directly-indexed cache. The GOT can therefore | |
257 | contain symbols that are not referenced by GOT relocations themselves | |
258 | (in other words, it may have symbols that are not referenced by things | |
259 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
260 | ||
261 | GOT relocations are less likely to overflow if we put the associated | |
262 | GOT entries towards the beginning. We therefore divide the global | |
263 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
264 | the first area can be used for both dynamic relocations and GP-relative | |
265 | accesses, while those in the "reloc-only" area are for dynamic | |
266 | relocations only. | |
267 | ||
268 | These GGA_* ("Global GOT Area") values are organised so that lower | |
269 | values are more general than higher values. Also, non-GGA_NONE | |
270 | values are ordered by the position of the area in the GOT. */ | |
271 | #define GGA_NORMAL 0 | |
272 | #define GGA_RELOC_ONLY 1 | |
273 | #define GGA_NONE 2 | |
274 | ||
861fb55a DJ |
275 | /* Information about a non-PIC interface to a PIC function. There are |
276 | two ways of creating these interfaces. The first is to add: | |
277 | ||
278 | lui $25,%hi(func) | |
279 | addiu $25,$25,%lo(func) | |
280 | ||
281 | immediately before a PIC function "func". The second is to add: | |
282 | ||
283 | lui $25,%hi(func) | |
284 | j func | |
285 | addiu $25,$25,%lo(func) | |
286 | ||
287 | to a separate trampoline section. | |
288 | ||
289 | Stubs of the first kind go in a new section immediately before the | |
290 | target function. Stubs of the second kind go in a single section | |
291 | pointed to by the hash table's "strampoline" field. */ | |
292 | struct mips_elf_la25_stub { | |
293 | /* The generated section that contains this stub. */ | |
294 | asection *stub_section; | |
295 | ||
296 | /* The offset of the stub from the start of STUB_SECTION. */ | |
297 | bfd_vma offset; | |
298 | ||
299 | /* One symbol for the original function. Its location is available | |
300 | in H->root.root.u.def. */ | |
301 | struct mips_elf_link_hash_entry *h; | |
302 | }; | |
303 | ||
304 | /* Macros for populating a mips_elf_la25_stub. */ | |
305 | ||
306 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
307 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
308 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ | |
d21911ea MR |
309 | #define LA25_LUI_MICROMIPS(VAL) \ |
310 | (0x41b90000 | (VAL)) /* lui t9,VAL */ | |
311 | #define LA25_J_MICROMIPS(VAL) \ | |
312 | (0xd4000000 | (((VAL) >> 1) & 0x3ffffff)) /* j VAL */ | |
313 | #define LA25_ADDIU_MICROMIPS(VAL) \ | |
314 | (0x33390000 | (VAL)) /* addiu t9,t9,VAL */ | |
861fb55a | 315 | |
b49e97c9 TS |
316 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
317 | the dynamic symbols. */ | |
318 | ||
319 | struct mips_elf_hash_sort_data | |
320 | { | |
321 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
322 | index. */ | |
323 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
324 | /* The least dynamic symbol table index corresponding to a non-TLS |
325 | symbol with a GOT entry. */ | |
b49e97c9 | 326 | long min_got_dynindx; |
f4416af6 AO |
327 | /* The greatest dynamic symbol table index corresponding to a symbol |
328 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 329 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 330 | long max_unref_got_dynindx; |
b49e97c9 TS |
331 | /* The greatest dynamic symbol table index not corresponding to a |
332 | symbol without a GOT entry. */ | |
333 | long max_non_got_dynindx; | |
334 | }; | |
335 | ||
336 | /* The MIPS ELF linker needs additional information for each symbol in | |
337 | the global hash table. */ | |
338 | ||
339 | struct mips_elf_link_hash_entry | |
340 | { | |
341 | struct elf_link_hash_entry root; | |
342 | ||
343 | /* External symbol information. */ | |
344 | EXTR esym; | |
345 | ||
861fb55a DJ |
346 | /* The la25 stub we have created for ths symbol, if any. */ |
347 | struct mips_elf_la25_stub *la25_stub; | |
348 | ||
b49e97c9 TS |
349 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
350 | this symbol. */ | |
351 | unsigned int possibly_dynamic_relocs; | |
352 | ||
b49e97c9 TS |
353 | /* If there is a stub that 32 bit functions should use to call this |
354 | 16 bit function, this points to the section containing the stub. */ | |
355 | asection *fn_stub; | |
356 | ||
b49e97c9 TS |
357 | /* If there is a stub that 16 bit functions should use to call this |
358 | 32 bit function, this points to the section containing the stub. */ | |
359 | asection *call_stub; | |
360 | ||
361 | /* This is like the call_stub field, but it is used if the function | |
362 | being called returns a floating point value. */ | |
363 | asection *call_fp_stub; | |
7c5fcef7 | 364 | |
0f20cc35 DJ |
365 | #define GOT_NORMAL 0 |
366 | #define GOT_TLS_GD 1 | |
367 | #define GOT_TLS_LDM 2 | |
368 | #define GOT_TLS_IE 4 | |
369 | #define GOT_TLS_OFFSET_DONE 0x40 | |
370 | #define GOT_TLS_DONE 0x80 | |
371 | unsigned char tls_type; | |
71782a75 | 372 | |
0f20cc35 DJ |
373 | /* This is only used in single-GOT mode; in multi-GOT mode there |
374 | is one mips_got_entry per GOT entry, so the offset is stored | |
375 | there. In single-GOT mode there may be many mips_got_entry | |
376 | structures all referring to the same GOT slot. It might be | |
377 | possible to use root.got.offset instead, but that field is | |
378 | overloaded already. */ | |
379 | bfd_vma tls_got_offset; | |
71782a75 | 380 | |
634835ae RS |
381 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
382 | unsigned int global_got_area : 2; | |
383 | ||
6ccf4795 RS |
384 | /* True if all GOT relocations against this symbol are for calls. This is |
385 | a looser condition than no_fn_stub below, because there may be other | |
386 | non-call non-GOT relocations against the symbol. */ | |
387 | unsigned int got_only_for_calls : 1; | |
388 | ||
71782a75 RS |
389 | /* True if one of the relocations described by possibly_dynamic_relocs |
390 | is against a readonly section. */ | |
391 | unsigned int readonly_reloc : 1; | |
392 | ||
861fb55a DJ |
393 | /* True if there is a relocation against this symbol that must be |
394 | resolved by the static linker (in other words, if the relocation | |
395 | cannot possibly be made dynamic). */ | |
396 | unsigned int has_static_relocs : 1; | |
397 | ||
71782a75 RS |
398 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
399 | This is set, for example, if there are relocations related to | |
400 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
401 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
402 | unsigned int no_fn_stub : 1; | |
403 | ||
404 | /* Whether we need the fn_stub; this is true if this symbol appears | |
405 | in any relocs other than a 16 bit call. */ | |
406 | unsigned int need_fn_stub : 1; | |
407 | ||
861fb55a DJ |
408 | /* True if this symbol is referenced by branch relocations from |
409 | any non-PIC input file. This is used to determine whether an | |
410 | la25 stub is required. */ | |
411 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
412 | |
413 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
414 | (as opposed to a PLT entry)? */ | |
415 | unsigned int needs_lazy_stub : 1; | |
b49e97c9 TS |
416 | }; |
417 | ||
418 | /* MIPS ELF linker hash table. */ | |
419 | ||
420 | struct mips_elf_link_hash_table | |
421 | { | |
422 | struct elf_link_hash_table root; | |
423 | #if 0 | |
424 | /* We no longer use this. */ | |
425 | /* String section indices for the dynamic section symbols. */ | |
426 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
427 | #endif | |
861fb55a | 428 | |
b49e97c9 TS |
429 | /* The number of .rtproc entries. */ |
430 | bfd_size_type procedure_count; | |
861fb55a | 431 | |
b49e97c9 TS |
432 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
433 | bfd_size_type compact_rel_size; | |
861fb55a | 434 | |
e6aea42d MR |
435 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic entry |
436 | is set to the address of __rld_obj_head as in IRIX5 and IRIX6. */ | |
b34976b6 | 437 | bfd_boolean use_rld_obj_head; |
861fb55a | 438 | |
b4082c70 DD |
439 | /* The __rld_map or __rld_obj_head symbol. */ |
440 | struct elf_link_hash_entry *rld_symbol; | |
861fb55a | 441 | |
b49e97c9 | 442 | /* This is set if we see any mips16 stub sections. */ |
b34976b6 | 443 | bfd_boolean mips16_stubs_seen; |
861fb55a DJ |
444 | |
445 | /* True if we can generate copy relocs and PLTs. */ | |
446 | bfd_boolean use_plts_and_copy_relocs; | |
447 | ||
0a44bf69 RS |
448 | /* True if we're generating code for VxWorks. */ |
449 | bfd_boolean is_vxworks; | |
861fb55a | 450 | |
0e53d9da AN |
451 | /* True if we already reported the small-data section overflow. */ |
452 | bfd_boolean small_data_overflow_reported; | |
861fb55a | 453 | |
0a44bf69 RS |
454 | /* Shortcuts to some dynamic sections, or NULL if they are not |
455 | being used. */ | |
456 | asection *srelbss; | |
457 | asection *sdynbss; | |
458 | asection *srelplt; | |
459 | asection *srelplt2; | |
460 | asection *sgotplt; | |
461 | asection *splt; | |
4e41d0d7 | 462 | asection *sstubs; |
a8028dd0 | 463 | asection *sgot; |
861fb55a | 464 | |
a8028dd0 RS |
465 | /* The master GOT information. */ |
466 | struct mips_got_info *got_info; | |
861fb55a DJ |
467 | |
468 | /* The size of the PLT header in bytes. */ | |
0a44bf69 | 469 | bfd_vma plt_header_size; |
861fb55a DJ |
470 | |
471 | /* The size of a PLT entry in bytes. */ | |
0a44bf69 | 472 | bfd_vma plt_entry_size; |
861fb55a | 473 | |
33bb52fb RS |
474 | /* The number of functions that need a lazy-binding stub. */ |
475 | bfd_vma lazy_stub_count; | |
861fb55a | 476 | |
5108fc1b RS |
477 | /* The size of a function stub entry in bytes. */ |
478 | bfd_vma function_stub_size; | |
861fb55a DJ |
479 | |
480 | /* The number of reserved entries at the beginning of the GOT. */ | |
481 | unsigned int reserved_gotno; | |
482 | ||
483 | /* The section used for mips_elf_la25_stub trampolines. | |
484 | See the comment above that structure for details. */ | |
485 | asection *strampoline; | |
486 | ||
487 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
488 | pairs. */ | |
489 | htab_t la25_stubs; | |
490 | ||
491 | /* A function FN (NAME, IS, OS) that creates a new input section | |
492 | called NAME and links it to output section OS. If IS is nonnull, | |
493 | the new section should go immediately before it, otherwise it | |
494 | should go at the (current) beginning of OS. | |
495 | ||
496 | The function returns the new section on success, otherwise it | |
497 | returns null. */ | |
498 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
499 | }; | |
500 | ||
4dfe6ac6 NC |
501 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
502 | ||
503 | #define mips_elf_hash_table(p) \ | |
504 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
505 | == MIPS_ELF_DATA ? ((struct mips_elf_link_hash_table *) ((p)->hash)) : NULL) | |
506 | ||
861fb55a | 507 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
508 | struct mips_htab_traverse_info |
509 | { | |
861fb55a DJ |
510 | /* The usual link-wide information. */ |
511 | struct bfd_link_info *info; | |
512 | bfd *output_bfd; | |
513 | ||
514 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
515 | bfd_boolean error; | |
b49e97c9 TS |
516 | }; |
517 | ||
6ae68ba3 MR |
518 | /* MIPS ELF private object data. */ |
519 | ||
520 | struct mips_elf_obj_tdata | |
521 | { | |
522 | /* Generic ELF private object data. */ | |
523 | struct elf_obj_tdata root; | |
524 | ||
525 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
526 | bfd *abi_fp_bfd; | |
527 | }; | |
528 | ||
529 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
530 | ||
531 | #define mips_elf_tdata(bfd) \ | |
532 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
533 | ||
0f20cc35 DJ |
534 | #define TLS_RELOC_P(r_type) \ |
535 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
536 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
537 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
538 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
539 | || r_type == R_MIPS_TLS_GD \ | |
540 | || r_type == R_MIPS_TLS_LDM \ | |
541 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
542 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
543 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
544 | || r_type == R_MIPS_TLS_TPREL32 \ | |
545 | || r_type == R_MIPS_TLS_TPREL64 \ | |
546 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 547 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
548 | || r_type == R_MIPS16_TLS_GD \ |
549 | || r_type == R_MIPS16_TLS_LDM \ | |
550 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
551 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
552 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
553 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
554 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
555 | || r_type == R_MICROMIPS_TLS_GD \ |
556 | || r_type == R_MICROMIPS_TLS_LDM \ | |
557 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
558 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
559 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
560 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
561 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 562 | |
b49e97c9 TS |
563 | /* Structure used to pass information to mips_elf_output_extsym. */ |
564 | ||
565 | struct extsym_info | |
566 | { | |
9e4aeb93 RS |
567 | bfd *abfd; |
568 | struct bfd_link_info *info; | |
b49e97c9 TS |
569 | struct ecoff_debug_info *debug; |
570 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 571 | bfd_boolean failed; |
b49e97c9 TS |
572 | }; |
573 | ||
8dc1a139 | 574 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
575 | |
576 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
577 | { | |
578 | "_procedure_table", | |
579 | "_procedure_string_table", | |
580 | "_procedure_table_size", | |
581 | NULL | |
582 | }; | |
583 | ||
584 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 585 | IRIX5. */ |
b49e97c9 TS |
586 | |
587 | typedef struct | |
588 | { | |
589 | unsigned long id1; /* Always one? */ | |
590 | unsigned long num; /* Number of compact relocation entries. */ | |
591 | unsigned long id2; /* Always two? */ | |
592 | unsigned long offset; /* The file offset of the first relocation. */ | |
593 | unsigned long reserved0; /* Zero? */ | |
594 | unsigned long reserved1; /* Zero? */ | |
595 | } Elf32_compact_rel; | |
596 | ||
597 | typedef struct | |
598 | { | |
599 | bfd_byte id1[4]; | |
600 | bfd_byte num[4]; | |
601 | bfd_byte id2[4]; | |
602 | bfd_byte offset[4]; | |
603 | bfd_byte reserved0[4]; | |
604 | bfd_byte reserved1[4]; | |
605 | } Elf32_External_compact_rel; | |
606 | ||
607 | typedef struct | |
608 | { | |
609 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
610 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
611 | unsigned int dist2to : 8; | |
612 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
613 | unsigned long konst; /* KONST field. See below. */ | |
614 | unsigned long vaddr; /* VADDR to be relocated. */ | |
615 | } Elf32_crinfo; | |
616 | ||
617 | typedef struct | |
618 | { | |
619 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
620 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
621 | unsigned int dist2to : 8; | |
622 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
623 | unsigned long konst; /* KONST field. See below. */ | |
624 | } Elf32_crinfo2; | |
625 | ||
626 | typedef struct | |
627 | { | |
628 | bfd_byte info[4]; | |
629 | bfd_byte konst[4]; | |
630 | bfd_byte vaddr[4]; | |
631 | } Elf32_External_crinfo; | |
632 | ||
633 | typedef struct | |
634 | { | |
635 | bfd_byte info[4]; | |
636 | bfd_byte konst[4]; | |
637 | } Elf32_External_crinfo2; | |
638 | ||
639 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
640 | ||
641 | #define CRINFO_CTYPE (0x1) | |
642 | #define CRINFO_CTYPE_SH (31) | |
643 | #define CRINFO_RTYPE (0xf) | |
644 | #define CRINFO_RTYPE_SH (27) | |
645 | #define CRINFO_DIST2TO (0xff) | |
646 | #define CRINFO_DIST2TO_SH (19) | |
647 | #define CRINFO_RELVADDR (0x7ffff) | |
648 | #define CRINFO_RELVADDR_SH (0) | |
649 | ||
650 | /* A compact relocation info has long (3 words) or short (2 words) | |
651 | formats. A short format doesn't have VADDR field and relvaddr | |
652 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
653 | #define CRF_MIPS_LONG 1 | |
654 | #define CRF_MIPS_SHORT 0 | |
655 | ||
656 | /* There are 4 types of compact relocation at least. The value KONST | |
657 | has different meaning for each type: | |
658 | ||
659 | (type) (konst) | |
660 | CT_MIPS_REL32 Address in data | |
661 | CT_MIPS_WORD Address in word (XXX) | |
662 | CT_MIPS_GPHI_LO GP - vaddr | |
663 | CT_MIPS_JMPAD Address to jump | |
664 | */ | |
665 | ||
666 | #define CRT_MIPS_REL32 0xa | |
667 | #define CRT_MIPS_WORD 0xb | |
668 | #define CRT_MIPS_GPHI_LO 0xc | |
669 | #define CRT_MIPS_JMPAD 0xd | |
670 | ||
671 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
672 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
673 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
674 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
675 | \f | |
676 | /* The structure of the runtime procedure descriptor created by the | |
677 | loader for use by the static exception system. */ | |
678 | ||
679 | typedef struct runtime_pdr { | |
ae9a127f NC |
680 | bfd_vma adr; /* Memory address of start of procedure. */ |
681 | long regmask; /* Save register mask. */ | |
682 | long regoffset; /* Save register offset. */ | |
683 | long fregmask; /* Save floating point register mask. */ | |
684 | long fregoffset; /* Save floating point register offset. */ | |
685 | long frameoffset; /* Frame size. */ | |
686 | short framereg; /* Frame pointer register. */ | |
687 | short pcreg; /* Offset or reg of return pc. */ | |
688 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 689 | long reserved; |
ae9a127f | 690 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
691 | } RPDR, *pRPDR; |
692 | #define cbRPDR sizeof (RPDR) | |
693 | #define rpdNil ((pRPDR) 0) | |
694 | \f | |
b15e6682 | 695 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
696 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
697 | struct mips_elf_link_hash_entry *, int); | |
b34976b6 | 698 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 699 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
700 | static bfd_vma mips_elf_high |
701 | (bfd_vma); | |
b34976b6 | 702 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
703 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
704 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
705 | bfd_vma *, asection *); | |
9719ad41 RS |
706 | static hashval_t mips_elf_got_entry_hash |
707 | (const void *); | |
f4416af6 | 708 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 709 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 710 | static struct mips_got_info *mips_elf_got_for_ibfd |
9719ad41 | 711 | (struct mips_got_info *, bfd *); |
f4416af6 | 712 | |
b49e97c9 TS |
713 | /* This will be used when we sort the dynamic relocation records. */ |
714 | static bfd *reldyn_sorting_bfd; | |
715 | ||
6d30f5b2 NC |
716 | /* True if ABFD is for CPUs with load interlocking that include |
717 | non-MIPS1 CPUs and R3900. */ | |
718 | #define LOAD_INTERLOCKS_P(abfd) \ | |
719 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
720 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
721 | ||
cd8d5a82 CF |
722 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
723 | This should be safe for all architectures. We enable this predicate | |
724 | for RM9000 for now. */ | |
725 | #define JAL_TO_BAL_P(abfd) \ | |
726 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
727 | ||
728 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
729 | This should be safe for all architectures. We enable this predicate for | |
730 | all CPUs. */ | |
731 | #define JALR_TO_BAL_P(abfd) 1 | |
732 | ||
38a7df63 CF |
733 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
734 | This should be safe for all architectures. We enable this predicate for | |
735 | all CPUs. */ | |
736 | #define JR_TO_B_P(abfd) 1 | |
737 | ||
861fb55a DJ |
738 | /* True if ABFD is a PIC object. */ |
739 | #define PIC_OBJECT_P(abfd) \ | |
740 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
741 | ||
b49e97c9 | 742 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
743 | #define ABI_N32_P(abfd) \ |
744 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
745 | ||
4a14403c | 746 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 747 | #define ABI_64_P(abfd) \ |
141ff970 | 748 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 749 | |
4a14403c TS |
750 | /* Nonzero if ABFD is using NewABI conventions. */ |
751 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
752 | ||
753 | /* The IRIX compatibility level we are striving for. */ | |
b49e97c9 TS |
754 | #define IRIX_COMPAT(abfd) \ |
755 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
756 | ||
b49e97c9 TS |
757 | /* Whether we are trying to be compatible with IRIX at all. */ |
758 | #define SGI_COMPAT(abfd) \ | |
759 | (IRIX_COMPAT (abfd) != ict_none) | |
760 | ||
761 | /* The name of the options section. */ | |
762 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 763 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 764 | |
cc2e31b9 RS |
765 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
766 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
767 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
768 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
769 | ||
943284cc DJ |
770 | /* Whether the section is readonly. */ |
771 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
772 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
773 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
774 | ||
b49e97c9 | 775 | /* The name of the stub section. */ |
ca07892d | 776 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
777 | |
778 | /* The size of an external REL relocation. */ | |
779 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
780 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
781 | ||
0a44bf69 RS |
782 | /* The size of an external RELA relocation. */ |
783 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
784 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
785 | ||
b49e97c9 TS |
786 | /* The size of an external dynamic table entry. */ |
787 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
788 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
789 | ||
790 | /* The size of a GOT entry. */ | |
791 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
792 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
793 | ||
b4082c70 DD |
794 | /* The size of the .rld_map section. */ |
795 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
796 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
797 | ||
b49e97c9 TS |
798 | /* The size of a symbol-table entry. */ |
799 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
800 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
801 | ||
802 | /* The default alignment for sections, as a power of two. */ | |
803 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 804 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
805 | |
806 | /* Get word-sized data. */ | |
807 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
808 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
809 | ||
810 | /* Put out word-sized data. */ | |
811 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
812 | (ABI_64_P (abfd) \ | |
813 | ? bfd_put_64 (abfd, val, ptr) \ | |
814 | : bfd_put_32 (abfd, val, ptr)) | |
815 | ||
861fb55a DJ |
816 | /* The opcode for word-sized loads (LW or LD). */ |
817 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
818 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
819 | ||
b49e97c9 | 820 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 821 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 822 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
823 | |
824 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
825 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
826 | ||
0a44bf69 RS |
827 | /* The name of the dynamic relocation section. */ |
828 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
829 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
830 | ||
b49e97c9 TS |
831 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
832 | from smaller values. Start with zero, widen, *then* decrement. */ | |
833 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 834 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 835 | |
51e38d68 RS |
836 | /* The value to write into got[1] for SVR4 targets, to identify it is |
837 | a GNU object. The dynamic linker can then use got[1] to store the | |
838 | module pointer. */ | |
839 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
840 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
841 | ||
f4416af6 | 842 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
843 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
844 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
845 | |
846 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
847 | offsets from $gp. */ | |
0a44bf69 | 848 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 849 | |
6a691779 | 850 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
851 | #define STUB_LW(abfd) \ |
852 | ((ABI_64_P (abfd) \ | |
853 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
854 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
855 | #define STUB_MOVE(abfd) \ | |
856 | ((ABI_64_P (abfd) \ | |
857 | ? 0x03e0782d /* daddu t7,ra */ \ | |
858 | : 0x03e07821)) /* addu t7,ra */ | |
859 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
860 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
861 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
862 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
863 | #define STUB_LI16S(abfd, VAL) \ |
864 | ((ABI_64_P (abfd) \ | |
865 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
866 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
867 | ||
5108fc1b RS |
868 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
869 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
870 | |
871 | /* The name of the dynamic interpreter. This is put in the .interp | |
872 | section. */ | |
873 | ||
874 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
875 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
876 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
877 | : "/usr/lib/libc.so.1") | |
878 | ||
879 | #ifdef BFD64 | |
ee6423ed AO |
880 | #define MNAME(bfd,pre,pos) \ |
881 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
882 | #define ELF_R_SYM(bfd, i) \ |
883 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
884 | #define ELF_R_TYPE(bfd, i) \ | |
885 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
886 | #define ELF_R_INFO(bfd, s, t) \ | |
887 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
888 | #else | |
ee6423ed | 889 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
890 | #define ELF_R_SYM(bfd, i) \ |
891 | (ELF32_R_SYM (i)) | |
892 | #define ELF_R_TYPE(bfd, i) \ | |
893 | (ELF32_R_TYPE (i)) | |
894 | #define ELF_R_INFO(bfd, s, t) \ | |
895 | (ELF32_R_INFO (s, t)) | |
896 | #endif | |
897 | \f | |
898 | /* The mips16 compiler uses a couple of special sections to handle | |
899 | floating point arguments. | |
900 | ||
901 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
902 | copy floating point arguments from the fp regs to the gp regs and | |
903 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
904 | call should be redirected to the stub instead. If no 32 bit | |
905 | function calls FNNAME, the stub should be discarded. We need to | |
906 | consider any reference to the function, not just a call, because | |
907 | if the address of the function is taken we will need the stub, | |
908 | since the address might be passed to a 32 bit function. | |
909 | ||
910 | Section names that look like .mips16.call.FNNAME contain stubs | |
911 | that copy floating point arguments from the gp regs to the fp | |
912 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
913 | then any 16 bit function that calls FNNAME should be redirected | |
914 | to the stub instead. If FNNAME is not a 32 bit function, the | |
915 | stub should be discarded. | |
916 | ||
917 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
918 | which call FNNAME and then copy the return value from the fp regs | |
919 | to the gp regs. These stubs store the return value in $18 while | |
920 | calling FNNAME; any function which might call one of these stubs | |
921 | must arrange to save $18 around the call. (This case is not | |
922 | needed for 32 bit functions that call 16 bit functions, because | |
923 | 16 bit functions always return floating point values in both | |
924 | $f0/$f1 and $2/$3.) | |
925 | ||
926 | Note that in all cases FNNAME might be defined statically. | |
927 | Therefore, FNNAME is not used literally. Instead, the relocation | |
928 | information will indicate which symbol the section is for. | |
929 | ||
930 | We record any stubs that we find in the symbol table. */ | |
931 | ||
932 | #define FN_STUB ".mips16.fn." | |
933 | #define CALL_STUB ".mips16.call." | |
934 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
935 | |
936 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
937 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
938 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 939 | \f |
861fb55a | 940 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
941 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
942 | { | |
861fb55a DJ |
943 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
944 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
945 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
946 | 0x031cc023, /* subu $24, $24, $28 */ | |
81f5d455 | 947 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
948 | 0x0018c082, /* srl $24, $24, 2 */ |
949 | 0x0320f809, /* jalr $25 */ | |
950 | 0x2718fffe /* subu $24, $24, 2 */ | |
951 | }; | |
952 | ||
953 | /* The format of the first PLT entry in an N32 executable. Different | |
954 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
955 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
956 | { | |
861fb55a DJ |
957 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
958 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
959 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
960 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 961 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ |
861fb55a DJ |
962 | 0x0018c082, /* srl $24, $24, 2 */ |
963 | 0x0320f809, /* jalr $25 */ | |
964 | 0x2718fffe /* subu $24, $24, 2 */ | |
965 | }; | |
966 | ||
967 | /* The format of the first PLT entry in an N64 executable. Different | |
968 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
969 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
970 | { | |
861fb55a DJ |
971 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
972 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
973 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
974 | 0x030ec023, /* subu $24, $24, $14 */ | |
81f5d455 | 975 | 0x03e0782d, /* move $15, $31 # 64-bit move (daddu) */ |
861fb55a DJ |
976 | 0x0018c0c2, /* srl $24, $24, 3 */ |
977 | 0x0320f809, /* jalr $25 */ | |
978 | 0x2718fffe /* subu $24, $24, 2 */ | |
979 | }; | |
980 | ||
981 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
982 | static const bfd_vma mips_exec_plt_entry[] = |
983 | { | |
861fb55a DJ |
984 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
985 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
986 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
987 | 0x03200008 /* jr $25 */ | |
988 | }; | |
989 | ||
0a44bf69 | 990 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
991 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
992 | { | |
0a44bf69 RS |
993 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
994 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
995 | 0x8f390008, /* lw t9, 8(t9) */ | |
996 | 0x00000000, /* nop */ | |
997 | 0x03200008, /* jr t9 */ | |
998 | 0x00000000 /* nop */ | |
999 | }; | |
1000 | ||
1001 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1002 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
1003 | { | |
0a44bf69 RS |
1004 | 0x10000000, /* b .PLT_resolver */ |
1005 | 0x24180000, /* li t8, <pltindex> */ | |
1006 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
1007 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
1008 | 0x8f390000, /* lw t9, 0(t9) */ | |
1009 | 0x00000000, /* nop */ | |
1010 | 0x03200008, /* jr t9 */ | |
1011 | 0x00000000 /* nop */ | |
1012 | }; | |
1013 | ||
1014 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1015 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1016 | { | |
0a44bf69 RS |
1017 | 0x8f990008, /* lw t9, 8(gp) */ |
1018 | 0x00000000, /* nop */ | |
1019 | 0x03200008, /* jr t9 */ | |
1020 | 0x00000000, /* nop */ | |
1021 | 0x00000000, /* nop */ | |
1022 | 0x00000000 /* nop */ | |
1023 | }; | |
1024 | ||
1025 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1026 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1027 | { | |
0a44bf69 RS |
1028 | 0x10000000, /* b .PLT_resolver */ |
1029 | 0x24180000 /* li t8, <pltindex> */ | |
1030 | }; | |
1031 | \f | |
d21911ea MR |
1032 | /* microMIPS 32-bit opcode helper installer. */ |
1033 | ||
1034 | static void | |
1035 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1036 | { | |
1037 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
1038 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); | |
1039 | } | |
1040 | ||
1041 | /* microMIPS 32-bit opcode helper retriever. */ | |
1042 | ||
1043 | static bfd_vma | |
1044 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1045 | { | |
1046 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1047 | } | |
1048 | \f | |
b49e97c9 TS |
1049 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1050 | ||
1051 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1052 | ((struct mips_elf_link_hash_entry *) \ | |
1053 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1054 | (copy), (follow))) | |
1055 | ||
1056 | /* Traverse a MIPS ELF linker hash table. */ | |
1057 | ||
1058 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1059 | (elf_link_hash_traverse \ | |
1060 | (&(table)->root, \ | |
9719ad41 | 1061 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1062 | (info))) |
1063 | ||
0f20cc35 DJ |
1064 | /* Find the base offsets for thread-local storage in this object, |
1065 | for GD/LD and IE/LE respectively. */ | |
1066 | ||
1067 | #define TP_OFFSET 0x7000 | |
1068 | #define DTP_OFFSET 0x8000 | |
1069 | ||
1070 | static bfd_vma | |
1071 | dtprel_base (struct bfd_link_info *info) | |
1072 | { | |
1073 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1074 | if (elf_hash_table (info)->tls_sec == NULL) | |
1075 | return 0; | |
1076 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1077 | } | |
1078 | ||
1079 | static bfd_vma | |
1080 | tprel_base (struct bfd_link_info *info) | |
1081 | { | |
1082 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1083 | if (elf_hash_table (info)->tls_sec == NULL) | |
1084 | return 0; | |
1085 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1086 | } | |
1087 | ||
b49e97c9 TS |
1088 | /* Create an entry in a MIPS ELF linker hash table. */ |
1089 | ||
1090 | static struct bfd_hash_entry * | |
9719ad41 RS |
1091 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1092 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1093 | { |
1094 | struct mips_elf_link_hash_entry *ret = | |
1095 | (struct mips_elf_link_hash_entry *) entry; | |
1096 | ||
1097 | /* Allocate the structure if it has not already been allocated by a | |
1098 | subclass. */ | |
9719ad41 RS |
1099 | if (ret == NULL) |
1100 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1101 | if (ret == NULL) | |
b49e97c9 TS |
1102 | return (struct bfd_hash_entry *) ret; |
1103 | ||
1104 | /* Call the allocation method of the superclass. */ | |
1105 | ret = ((struct mips_elf_link_hash_entry *) | |
1106 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1107 | table, string)); | |
9719ad41 | 1108 | if (ret != NULL) |
b49e97c9 TS |
1109 | { |
1110 | /* Set local fields. */ | |
1111 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1112 | /* We use -2 as a marker to indicate that the information has | |
1113 | not been set. -1 means there is no associated ifd. */ | |
1114 | ret->esym.ifd = -2; | |
861fb55a | 1115 | ret->la25_stub = 0; |
b49e97c9 | 1116 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1117 | ret->fn_stub = NULL; |
b49e97c9 TS |
1118 | ret->call_stub = NULL; |
1119 | ret->call_fp_stub = NULL; | |
71782a75 | 1120 | ret->tls_type = GOT_NORMAL; |
634835ae | 1121 | ret->global_got_area = GGA_NONE; |
6ccf4795 | 1122 | ret->got_only_for_calls = TRUE; |
71782a75 | 1123 | ret->readonly_reloc = FALSE; |
861fb55a | 1124 | ret->has_static_relocs = FALSE; |
71782a75 RS |
1125 | ret->no_fn_stub = FALSE; |
1126 | ret->need_fn_stub = FALSE; | |
861fb55a | 1127 | ret->has_nonpic_branches = FALSE; |
33bb52fb | 1128 | ret->needs_lazy_stub = FALSE; |
b49e97c9 TS |
1129 | } |
1130 | ||
1131 | return (struct bfd_hash_entry *) ret; | |
1132 | } | |
f0abc2a1 | 1133 | |
6ae68ba3 MR |
1134 | /* Allocate MIPS ELF private object data. */ |
1135 | ||
1136 | bfd_boolean | |
1137 | _bfd_mips_elf_mkobject (bfd *abfd) | |
1138 | { | |
1139 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1140 | MIPS_ELF_DATA); | |
1141 | } | |
1142 | ||
f0abc2a1 | 1143 | bfd_boolean |
9719ad41 | 1144 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1145 | { |
f592407e AM |
1146 | if (!sec->used_by_bfd) |
1147 | { | |
1148 | struct _mips_elf_section_data *sdata; | |
1149 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1150 | |
f592407e AM |
1151 | sdata = bfd_zalloc (abfd, amt); |
1152 | if (sdata == NULL) | |
1153 | return FALSE; | |
1154 | sec->used_by_bfd = sdata; | |
1155 | } | |
f0abc2a1 AM |
1156 | |
1157 | return _bfd_elf_new_section_hook (abfd, sec); | |
1158 | } | |
b49e97c9 TS |
1159 | \f |
1160 | /* Read ECOFF debugging information from a .mdebug section into a | |
1161 | ecoff_debug_info structure. */ | |
1162 | ||
b34976b6 | 1163 | bfd_boolean |
9719ad41 RS |
1164 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1165 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1166 | { |
1167 | HDRR *symhdr; | |
1168 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1169 | char *ext_hdr; |
b49e97c9 TS |
1170 | |
1171 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1172 | memset (debug, 0, sizeof (*debug)); | |
1173 | ||
9719ad41 | 1174 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1175 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1176 | goto error_return; | |
1177 | ||
9719ad41 | 1178 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1179 | swap->external_hdr_size)) |
b49e97c9 TS |
1180 | goto error_return; |
1181 | ||
1182 | symhdr = &debug->symbolic_header; | |
1183 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1184 | ||
1185 | /* The symbolic header contains absolute file offsets and sizes to | |
1186 | read. */ | |
1187 | #define READ(ptr, offset, count, size, type) \ | |
1188 | if (symhdr->count == 0) \ | |
1189 | debug->ptr = NULL; \ | |
1190 | else \ | |
1191 | { \ | |
1192 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 1193 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
1194 | if (debug->ptr == NULL) \ |
1195 | goto error_return; \ | |
9719ad41 | 1196 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
1197 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
1198 | goto error_return; \ | |
1199 | } | |
1200 | ||
1201 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1202 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1203 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1204 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1205 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1206 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1207 | union aux_ext *); | |
1208 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1209 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1210 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1211 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1212 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1213 | #undef READ |
1214 | ||
1215 | debug->fdr = NULL; | |
b49e97c9 | 1216 | |
b34976b6 | 1217 | return TRUE; |
b49e97c9 TS |
1218 | |
1219 | error_return: | |
1220 | if (ext_hdr != NULL) | |
1221 | free (ext_hdr); | |
1222 | if (debug->line != NULL) | |
1223 | free (debug->line); | |
1224 | if (debug->external_dnr != NULL) | |
1225 | free (debug->external_dnr); | |
1226 | if (debug->external_pdr != NULL) | |
1227 | free (debug->external_pdr); | |
1228 | if (debug->external_sym != NULL) | |
1229 | free (debug->external_sym); | |
1230 | if (debug->external_opt != NULL) | |
1231 | free (debug->external_opt); | |
1232 | if (debug->external_aux != NULL) | |
1233 | free (debug->external_aux); | |
1234 | if (debug->ss != NULL) | |
1235 | free (debug->ss); | |
1236 | if (debug->ssext != NULL) | |
1237 | free (debug->ssext); | |
1238 | if (debug->external_fdr != NULL) | |
1239 | free (debug->external_fdr); | |
1240 | if (debug->external_rfd != NULL) | |
1241 | free (debug->external_rfd); | |
1242 | if (debug->external_ext != NULL) | |
1243 | free (debug->external_ext); | |
b34976b6 | 1244 | return FALSE; |
b49e97c9 TS |
1245 | } |
1246 | \f | |
1247 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1248 | ||
1249 | static void | |
9719ad41 | 1250 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1251 | { |
1252 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1253 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1254 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1255 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1256 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1257 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1258 | ||
1259 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1260 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1261 | ||
1262 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1263 | } |
1264 | ||
1265 | /* Create a runtime procedure table from the .mdebug section. */ | |
1266 | ||
b34976b6 | 1267 | static bfd_boolean |
9719ad41 RS |
1268 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1269 | struct bfd_link_info *info, asection *s, | |
1270 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1271 | { |
1272 | const struct ecoff_debug_swap *swap; | |
1273 | HDRR *hdr = &debug->symbolic_header; | |
1274 | RPDR *rpdr, *rp; | |
1275 | struct rpdr_ext *erp; | |
9719ad41 | 1276 | void *rtproc; |
b49e97c9 TS |
1277 | struct pdr_ext *epdr; |
1278 | struct sym_ext *esym; | |
1279 | char *ss, **sv; | |
1280 | char *str; | |
1281 | bfd_size_type size; | |
1282 | bfd_size_type count; | |
1283 | unsigned long sindex; | |
1284 | unsigned long i; | |
1285 | PDR pdr; | |
1286 | SYMR sym; | |
1287 | const char *no_name_func = _("static procedure (no name)"); | |
1288 | ||
1289 | epdr = NULL; | |
1290 | rpdr = NULL; | |
1291 | esym = NULL; | |
1292 | ss = NULL; | |
1293 | sv = NULL; | |
1294 | ||
1295 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1296 | ||
1297 | sindex = strlen (no_name_func) + 1; | |
1298 | count = hdr->ipdMax; | |
1299 | if (count > 0) | |
1300 | { | |
1301 | size = swap->external_pdr_size; | |
1302 | ||
9719ad41 | 1303 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1304 | if (epdr == NULL) |
1305 | goto error_return; | |
1306 | ||
9719ad41 | 1307 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1308 | goto error_return; |
1309 | ||
1310 | size = sizeof (RPDR); | |
9719ad41 | 1311 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1312 | if (rpdr == NULL) |
1313 | goto error_return; | |
1314 | ||
1315 | size = sizeof (char *); | |
9719ad41 | 1316 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1317 | if (sv == NULL) |
1318 | goto error_return; | |
1319 | ||
1320 | count = hdr->isymMax; | |
1321 | size = swap->external_sym_size; | |
9719ad41 | 1322 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1323 | if (esym == NULL) |
1324 | goto error_return; | |
1325 | ||
9719ad41 | 1326 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1327 | goto error_return; |
1328 | ||
1329 | count = hdr->issMax; | |
9719ad41 | 1330 | ss = bfd_malloc (count); |
b49e97c9 TS |
1331 | if (ss == NULL) |
1332 | goto error_return; | |
f075ee0c | 1333 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1334 | goto error_return; |
1335 | ||
1336 | count = hdr->ipdMax; | |
1337 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1338 | { | |
9719ad41 RS |
1339 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1340 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1341 | rp->adr = sym.value; |
1342 | rp->regmask = pdr.regmask; | |
1343 | rp->regoffset = pdr.regoffset; | |
1344 | rp->fregmask = pdr.fregmask; | |
1345 | rp->fregoffset = pdr.fregoffset; | |
1346 | rp->frameoffset = pdr.frameoffset; | |
1347 | rp->framereg = pdr.framereg; | |
1348 | rp->pcreg = pdr.pcreg; | |
1349 | rp->irpss = sindex; | |
1350 | sv[i] = ss + sym.iss; | |
1351 | sindex += strlen (sv[i]) + 1; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1356 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1357 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1358 | if (rtproc == NULL) |
1359 | { | |
1360 | mips_elf_hash_table (info)->procedure_count = 0; | |
1361 | goto error_return; | |
1362 | } | |
1363 | ||
1364 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1365 | ||
9719ad41 | 1366 | erp = rtproc; |
b49e97c9 TS |
1367 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1368 | erp++; | |
1369 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1370 | strcpy (str, no_name_func); | |
1371 | str += strlen (no_name_func) + 1; | |
1372 | for (i = 0; i < count; i++) | |
1373 | { | |
1374 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1375 | strcpy (str, sv[i]); | |
1376 | str += strlen (sv[i]) + 1; | |
1377 | } | |
1378 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1379 | ||
1380 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1381 | s->size = size; |
9719ad41 | 1382 | s->contents = rtproc; |
b49e97c9 TS |
1383 | |
1384 | /* Skip this section later on (I don't think this currently | |
1385 | matters, but someday it might). */ | |
8423293d | 1386 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1387 | |
1388 | if (epdr != NULL) | |
1389 | free (epdr); | |
1390 | if (rpdr != NULL) | |
1391 | free (rpdr); | |
1392 | if (esym != NULL) | |
1393 | free (esym); | |
1394 | if (ss != NULL) | |
1395 | free (ss); | |
1396 | if (sv != NULL) | |
1397 | free (sv); | |
1398 | ||
b34976b6 | 1399 | return TRUE; |
b49e97c9 TS |
1400 | |
1401 | error_return: | |
1402 | if (epdr != NULL) | |
1403 | free (epdr); | |
1404 | if (rpdr != NULL) | |
1405 | free (rpdr); | |
1406 | if (esym != NULL) | |
1407 | free (esym); | |
1408 | if (ss != NULL) | |
1409 | free (ss); | |
1410 | if (sv != NULL) | |
1411 | free (sv); | |
b34976b6 | 1412 | return FALSE; |
b49e97c9 | 1413 | } |
738e5348 | 1414 | \f |
861fb55a DJ |
1415 | /* We're going to create a stub for H. Create a symbol for the stub's |
1416 | value and size, to help make the disassembly easier to read. */ | |
1417 | ||
1418 | static bfd_boolean | |
1419 | mips_elf_create_stub_symbol (struct bfd_link_info *info, | |
1420 | struct mips_elf_link_hash_entry *h, | |
1421 | const char *prefix, asection *s, bfd_vma value, | |
1422 | bfd_vma size) | |
1423 | { | |
1424 | struct bfd_link_hash_entry *bh; | |
1425 | struct elf_link_hash_entry *elfh; | |
1426 | const char *name; | |
1427 | ||
df58fc94 RS |
1428 | if (ELF_ST_IS_MICROMIPS (h->root.other)) |
1429 | value |= 1; | |
1430 | ||
861fb55a DJ |
1431 | /* Create a new symbol. */ |
1432 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1433 | bh = NULL; | |
1434 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1435 | BSF_LOCAL, s, value, NULL, | |
1436 | TRUE, FALSE, &bh)) | |
1437 | return FALSE; | |
1438 | ||
1439 | /* Make it a local function. */ | |
1440 | elfh = (struct elf_link_hash_entry *) bh; | |
1441 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1442 | elfh->size = size; | |
1443 | elfh->forced_local = 1; | |
1444 | return TRUE; | |
1445 | } | |
1446 | ||
738e5348 RS |
1447 | /* We're about to redefine H. Create a symbol to represent H's |
1448 | current value and size, to help make the disassembly easier | |
1449 | to read. */ | |
1450 | ||
1451 | static bfd_boolean | |
1452 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1453 | struct mips_elf_link_hash_entry *h, | |
1454 | const char *prefix) | |
1455 | { | |
1456 | struct bfd_link_hash_entry *bh; | |
1457 | struct elf_link_hash_entry *elfh; | |
1458 | const char *name; | |
1459 | asection *s; | |
1460 | bfd_vma value; | |
1461 | ||
1462 | /* Read the symbol's value. */ | |
1463 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1464 | || h->root.root.type == bfd_link_hash_defweak); | |
1465 | s = h->root.root.u.def.section; | |
1466 | value = h->root.root.u.def.value; | |
1467 | ||
1468 | /* Create a new symbol. */ | |
1469 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1470 | bh = NULL; | |
1471 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1472 | BSF_LOCAL, s, value, NULL, | |
1473 | TRUE, FALSE, &bh)) | |
1474 | return FALSE; | |
1475 | ||
1476 | /* Make it local and copy the other attributes from H. */ | |
1477 | elfh = (struct elf_link_hash_entry *) bh; | |
1478 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1479 | elfh->other = h->root.other; | |
1480 | elfh->size = h->root.size; | |
1481 | elfh->forced_local = 1; | |
1482 | return TRUE; | |
1483 | } | |
1484 | ||
1485 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1486 | function rather than to a hard-float stub. */ | |
1487 | ||
1488 | static bfd_boolean | |
1489 | section_allows_mips16_refs_p (asection *section) | |
1490 | { | |
1491 | const char *name; | |
1492 | ||
1493 | name = bfd_get_section_name (section->owner, section); | |
1494 | return (FN_STUB_P (name) | |
1495 | || CALL_STUB_P (name) | |
1496 | || CALL_FP_STUB_P (name) | |
1497 | || strcmp (name, ".pdr") == 0); | |
1498 | } | |
1499 | ||
1500 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1501 | stub section of some kind. Return the R_SYMNDX of the target | |
1502 | function, or 0 if we can't decide which function that is. */ | |
1503 | ||
1504 | static unsigned long | |
cb4437b8 MR |
1505 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1506 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1507 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1508 | const Elf_Internal_Rela *relend) |
1509 | { | |
cb4437b8 | 1510 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1511 | const Elf_Internal_Rela *rel; |
1512 | ||
cb4437b8 MR |
1513 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1514 | one in a compound relocation. */ | |
1515 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1516 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1517 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1518 | ||
1519 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1520 | the traditional behavior. */ | |
1521 | if (relocs < relend) | |
1522 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1523 | ||
1524 | return 0; | |
1525 | } | |
b49e97c9 TS |
1526 | |
1527 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1528 | discard them. */ | |
1529 | ||
861fb55a DJ |
1530 | static void |
1531 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1532 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1533 | { |
738e5348 RS |
1534 | /* Dynamic symbols must use the standard call interface, in case other |
1535 | objects try to call them. */ | |
1536 | if (h->fn_stub != NULL | |
1537 | && h->root.dynindx != -1) | |
1538 | { | |
1539 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1540 | h->need_fn_stub = TRUE; | |
1541 | } | |
1542 | ||
b49e97c9 TS |
1543 | if (h->fn_stub != NULL |
1544 | && ! h->need_fn_stub) | |
1545 | { | |
1546 | /* We don't need the fn_stub; the only references to this symbol | |
1547 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1548 | being included in the link. */ | |
eea6121a | 1549 | h->fn_stub->size = 0; |
b49e97c9 TS |
1550 | h->fn_stub->flags &= ~SEC_RELOC; |
1551 | h->fn_stub->reloc_count = 0; | |
1552 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1553 | } | |
1554 | ||
1555 | if (h->call_stub != NULL | |
30c09090 | 1556 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1557 | { |
1558 | /* We don't need the call_stub; this is a 16 bit function, so | |
1559 | calls from other 16 bit functions are OK. Clobber the size | |
1560 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1561 | h->call_stub->size = 0; |
b49e97c9 TS |
1562 | h->call_stub->flags &= ~SEC_RELOC; |
1563 | h->call_stub->reloc_count = 0; | |
1564 | h->call_stub->flags |= SEC_EXCLUDE; | |
1565 | } | |
1566 | ||
1567 | if (h->call_fp_stub != NULL | |
30c09090 | 1568 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1569 | { |
1570 | /* We don't need the call_stub; this is a 16 bit function, so | |
1571 | calls from other 16 bit functions are OK. Clobber the size | |
1572 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1573 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1574 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1575 | h->call_fp_stub->reloc_count = 0; | |
1576 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1577 | } | |
861fb55a DJ |
1578 | } |
1579 | ||
1580 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1581 | ||
1582 | static hashval_t | |
1583 | mips_elf_la25_stub_hash (const void *entry_) | |
1584 | { | |
1585 | const struct mips_elf_la25_stub *entry; | |
1586 | ||
1587 | entry = (struct mips_elf_la25_stub *) entry_; | |
1588 | return entry->h->root.root.u.def.section->id | |
1589 | + entry->h->root.root.u.def.value; | |
1590 | } | |
1591 | ||
1592 | static int | |
1593 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1594 | { | |
1595 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1596 | ||
1597 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1598 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1599 | return ((entry1->h->root.root.u.def.section | |
1600 | == entry2->h->root.root.u.def.section) | |
1601 | && (entry1->h->root.root.u.def.value | |
1602 | == entry2->h->root.root.u.def.value)); | |
1603 | } | |
1604 | ||
1605 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1606 | the linker's implementation of add_stub_function. Return true on | |
1607 | success. */ | |
1608 | ||
1609 | bfd_boolean | |
1610 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, | |
1611 | asection *(*fn) (const char *, asection *, | |
1612 | asection *)) | |
1613 | { | |
1614 | struct mips_elf_link_hash_table *htab; | |
1615 | ||
1616 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1617 | if (htab == NULL) |
1618 | return FALSE; | |
1619 | ||
861fb55a DJ |
1620 | htab->add_stub_section = fn; |
1621 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1622 | mips_elf_la25_stub_eq, NULL); | |
1623 | if (htab->la25_stubs == NULL) | |
1624 | return FALSE; | |
1625 | ||
1626 | return TRUE; | |
1627 | } | |
1628 | ||
1629 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1630 | that it or its fn_stub might need $25 to be valid on entry. |
1631 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1632 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1633 | entry points are of interest here. */ | |
861fb55a DJ |
1634 | |
1635 | static bfd_boolean | |
1636 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) | |
1637 | { | |
1638 | return ((h->root.root.type == bfd_link_hash_defined | |
1639 | || h->root.root.type == bfd_link_hash_defweak) | |
1640 | && h->root.def_regular | |
1641 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
8f0c309a CLT |
1642 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1643 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1644 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1645 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1646 | } | |
1647 | ||
8f0c309a CLT |
1648 | /* Set *SEC to the input section that contains the target of STUB. |
1649 | Return the offset of the target from the start of that section. */ | |
1650 | ||
1651 | static bfd_vma | |
1652 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1653 | asection **sec) | |
1654 | { | |
1655 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1656 | { | |
1657 | BFD_ASSERT (stub->h->need_fn_stub); | |
1658 | *sec = stub->h->fn_stub; | |
1659 | return 0; | |
1660 | } | |
1661 | else | |
1662 | { | |
1663 | *sec = stub->h->root.root.u.def.section; | |
1664 | return stub->h->root.root.u.def.value; | |
1665 | } | |
1666 | } | |
1667 | ||
861fb55a DJ |
1668 | /* STUB describes an la25 stub that we have decided to implement |
1669 | by inserting an LUI/ADDIU pair before the target function. | |
1670 | Create the section and redirect the function symbol to it. */ | |
1671 | ||
1672 | static bfd_boolean | |
1673 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, | |
1674 | struct bfd_link_info *info) | |
1675 | { | |
1676 | struct mips_elf_link_hash_table *htab; | |
1677 | char *name; | |
1678 | asection *s, *input_section; | |
1679 | unsigned int align; | |
1680 | ||
1681 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1682 | if (htab == NULL) |
1683 | return FALSE; | |
861fb55a DJ |
1684 | |
1685 | /* Create a unique name for the new section. */ | |
1686 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1687 | if (name == NULL) | |
1688 | return FALSE; | |
1689 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); | |
1690 | ||
1691 | /* Create the section. */ | |
8f0c309a | 1692 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1693 | s = htab->add_stub_section (name, input_section, |
1694 | input_section->output_section); | |
1695 | if (s == NULL) | |
1696 | return FALSE; | |
1697 | ||
1698 | /* Make sure that any padding goes before the stub. */ | |
1699 | align = input_section->alignment_power; | |
1700 | if (!bfd_set_section_alignment (s->owner, s, align)) | |
1701 | return FALSE; | |
1702 | if (align > 3) | |
1703 | s->size = (1 << align) - 8; | |
1704 | ||
1705 | /* Create a symbol for the stub. */ | |
1706 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1707 | stub->stub_section = s; | |
1708 | stub->offset = s->size; | |
1709 | ||
1710 | /* Allocate room for it. */ | |
1711 | s->size += 8; | |
1712 | return TRUE; | |
1713 | } | |
1714 | ||
1715 | /* STUB describes an la25 stub that we have decided to implement | |
1716 | with a separate trampoline. Allocate room for it and redirect | |
1717 | the function symbol to it. */ | |
1718 | ||
1719 | static bfd_boolean | |
1720 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, | |
1721 | struct bfd_link_info *info) | |
1722 | { | |
1723 | struct mips_elf_link_hash_table *htab; | |
1724 | asection *s; | |
1725 | ||
1726 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1727 | if (htab == NULL) |
1728 | return FALSE; | |
861fb55a DJ |
1729 | |
1730 | /* Create a trampoline section, if we haven't already. */ | |
1731 | s = htab->strampoline; | |
1732 | if (s == NULL) | |
1733 | { | |
1734 | asection *input_section = stub->h->root.root.u.def.section; | |
1735 | s = htab->add_stub_section (".text", NULL, | |
1736 | input_section->output_section); | |
1737 | if (s == NULL || !bfd_set_section_alignment (s->owner, s, 4)) | |
1738 | return FALSE; | |
1739 | htab->strampoline = s; | |
1740 | } | |
1741 | ||
1742 | /* Create a symbol for the stub. */ | |
1743 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1744 | stub->stub_section = s; | |
1745 | stub->offset = s->size; | |
1746 | ||
1747 | /* Allocate room for it. */ | |
1748 | s->size += 16; | |
1749 | return TRUE; | |
1750 | } | |
1751 | ||
1752 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
1753 | appropriate stub exists and point H at it. */ | |
1754 | ||
1755 | static bfd_boolean | |
1756 | mips_elf_add_la25_stub (struct bfd_link_info *info, | |
1757 | struct mips_elf_link_hash_entry *h) | |
1758 | { | |
1759 | struct mips_elf_link_hash_table *htab; | |
1760 | struct mips_elf_la25_stub search, *stub; | |
1761 | bfd_boolean use_trampoline_p; | |
1762 | asection *s; | |
1763 | bfd_vma value; | |
1764 | void **slot; | |
1765 | ||
861fb55a DJ |
1766 | /* Describe the stub we want. */ |
1767 | search.stub_section = NULL; | |
1768 | search.offset = 0; | |
1769 | search.h = h; | |
1770 | ||
1771 | /* See if we've already created an equivalent stub. */ | |
1772 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
1773 | if (htab == NULL) |
1774 | return FALSE; | |
1775 | ||
861fb55a DJ |
1776 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
1777 | if (slot == NULL) | |
1778 | return FALSE; | |
1779 | ||
1780 | stub = (struct mips_elf_la25_stub *) *slot; | |
1781 | if (stub != NULL) | |
1782 | { | |
1783 | /* We can reuse the existing stub. */ | |
1784 | h->la25_stub = stub; | |
1785 | return TRUE; | |
1786 | } | |
1787 | ||
1788 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
1789 | stub = bfd_malloc (sizeof (search)); | |
1790 | if (stub == NULL) | |
1791 | return FALSE; | |
1792 | *stub = search; | |
1793 | *slot = stub; | |
1794 | ||
8f0c309a CLT |
1795 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
1796 | of the section and if we would need no more than 2 nops. */ | |
1797 | value = mips_elf_get_la25_target (stub, &s); | |
1798 | use_trampoline_p = (value != 0 || s->alignment_power > 4); | |
1799 | ||
861fb55a DJ |
1800 | h->la25_stub = stub; |
1801 | return (use_trampoline_p | |
1802 | ? mips_elf_add_la25_trampoline (stub, info) | |
1803 | : mips_elf_add_la25_intro (stub, info)); | |
1804 | } | |
1805 | ||
1806 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
1807 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
1808 | ||
1809 | static bfd_boolean | |
1810 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) | |
1811 | { | |
1812 | struct mips_htab_traverse_info *hti; | |
1813 | ||
1814 | hti = (struct mips_htab_traverse_info *) data; | |
861fb55a DJ |
1815 | if (!hti->info->relocatable) |
1816 | mips_elf_check_mips16_stubs (hti->info, h); | |
b49e97c9 | 1817 | |
861fb55a DJ |
1818 | if (mips_elf_local_pic_function_p (h)) |
1819 | { | |
ba85c43e NC |
1820 | /* PR 12845: If H is in a section that has been garbage |
1821 | collected it will have its output section set to *ABS*. */ | |
1822 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
1823 | return TRUE; | |
1824 | ||
861fb55a DJ |
1825 | /* H is a function that might need $25 to be valid on entry. |
1826 | If we're creating a non-PIC relocatable object, mark H as | |
1827 | being PIC. If we're creating a non-relocatable object with | |
1828 | non-PIC branches and jumps to H, make sure that H has an la25 | |
1829 | stub. */ | |
1830 | if (hti->info->relocatable) | |
1831 | { | |
1832 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
1833 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
1834 | } | |
1835 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
1836 | { | |
1837 | hti->error = TRUE; | |
1838 | return FALSE; | |
1839 | } | |
1840 | } | |
b34976b6 | 1841 | return TRUE; |
b49e97c9 TS |
1842 | } |
1843 | \f | |
d6f16593 MR |
1844 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1845 | Most mips16 instructions are 16 bits, but these instructions | |
1846 | are 32 bits. | |
1847 | ||
1848 | The format of these instructions is: | |
1849 | ||
1850 | +--------------+--------------------------------+ | |
1851 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1852 | +--------------+--------------------------------+ | |
1853 | | Immediate 15:0 | | |
1854 | +-----------------------------------------------+ | |
1855 | ||
1856 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1857 | Note that the immediate value in the first word is swapped. | |
1858 | ||
1859 | When producing a relocatable object file, R_MIPS16_26 is | |
1860 | handled mostly like R_MIPS_26. In particular, the addend is | |
1861 | stored as a straight 26-bit value in a 32-bit instruction. | |
1862 | (gas makes life simpler for itself by never adjusting a | |
1863 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1864 | always zero). However, the 32 bit instruction is stored as 2 | |
1865 | 16-bit values, rather than a single 32-bit value. In a | |
1866 | big-endian file, the result is the same; in a little-endian | |
1867 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1868 | This is so that a disassembler can recognize the jal | |
1869 | instruction. | |
1870 | ||
1871 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1872 | instruction stored as two 16-bit values. The addend A is the | |
1873 | contents of the targ26 field. The calculation is the same as | |
1874 | R_MIPS_26. When storing the calculated value, reorder the | |
1875 | immediate value as shown above, and don't forget to store the | |
1876 | value as two 16-bit values. | |
1877 | ||
1878 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1879 | defined as | |
1880 | ||
1881 | big-endian: | |
1882 | +--------+----------------------+ | |
1883 | | | | | |
1884 | | | targ26-16 | | |
1885 | |31 26|25 0| | |
1886 | +--------+----------------------+ | |
1887 | ||
1888 | little-endian: | |
1889 | +----------+------+-------------+ | |
1890 | | | | | | |
1891 | | sub1 | | sub2 | | |
1892 | |0 9|10 15|16 31| | |
1893 | +----------+--------------------+ | |
1894 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1895 | ((sub1 << 16) | sub2)). | |
1896 | ||
1897 | When producing a relocatable object file, the calculation is | |
1898 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1899 | When producing a fully linked file, the calculation is | |
1900 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1901 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1902 | ||
738e5348 RS |
1903 | The table below lists the other MIPS16 instruction relocations. |
1904 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1905 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1906 | immediate fields: | |
1907 | ||
1908 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1909 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1910 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1911 | R_MIPS16_HI16 R_MIPS_HI16 | |
1912 | R_MIPS16_LO16 R_MIPS_LO16 | |
1913 | ||
1914 | A typical instruction will have a format like this: | |
d6f16593 MR |
1915 | |
1916 | +--------------+--------------------------------+ | |
1917 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1918 | +--------------+--------------------------------+ | |
1919 | | Major | rx | ry | Imm 4:0 | | |
1920 | +--------------+--------------------------------+ | |
1921 | ||
1922 | EXTEND is the five bit value 11110. Major is the instruction | |
1923 | opcode. | |
1924 | ||
738e5348 RS |
1925 | All we need to do here is shuffle the bits appropriately. |
1926 | As above, the two 16-bit halves must be swapped on a | |
1927 | little-endian system. */ | |
1928 | ||
1929 | static inline bfd_boolean | |
1930 | mips16_reloc_p (int r_type) | |
1931 | { | |
1932 | switch (r_type) | |
1933 | { | |
1934 | case R_MIPS16_26: | |
1935 | case R_MIPS16_GPREL: | |
1936 | case R_MIPS16_GOT16: | |
1937 | case R_MIPS16_CALL16: | |
1938 | case R_MIPS16_HI16: | |
1939 | case R_MIPS16_LO16: | |
d0f13682 CLT |
1940 | case R_MIPS16_TLS_GD: |
1941 | case R_MIPS16_TLS_LDM: | |
1942 | case R_MIPS16_TLS_DTPREL_HI16: | |
1943 | case R_MIPS16_TLS_DTPREL_LO16: | |
1944 | case R_MIPS16_TLS_GOTTPREL: | |
1945 | case R_MIPS16_TLS_TPREL_HI16: | |
1946 | case R_MIPS16_TLS_TPREL_LO16: | |
738e5348 RS |
1947 | return TRUE; |
1948 | ||
1949 | default: | |
1950 | return FALSE; | |
1951 | } | |
1952 | } | |
1953 | ||
df58fc94 RS |
1954 | /* Check if a microMIPS reloc. */ |
1955 | ||
1956 | static inline bfd_boolean | |
1957 | micromips_reloc_p (unsigned int r_type) | |
1958 | { | |
1959 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
1960 | } | |
1961 | ||
1962 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
1963 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
1964 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
1965 | ||
1966 | static inline bfd_boolean | |
1967 | micromips_reloc_shuffle_p (unsigned int r_type) | |
1968 | { | |
1969 | return (micromips_reloc_p (r_type) | |
1970 | && r_type != R_MICROMIPS_PC7_S1 | |
1971 | && r_type != R_MICROMIPS_PC10_S1); | |
1972 | } | |
1973 | ||
738e5348 RS |
1974 | static inline bfd_boolean |
1975 | got16_reloc_p (int r_type) | |
1976 | { | |
df58fc94 RS |
1977 | return (r_type == R_MIPS_GOT16 |
1978 | || r_type == R_MIPS16_GOT16 | |
1979 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
1980 | } |
1981 | ||
1982 | static inline bfd_boolean | |
1983 | call16_reloc_p (int r_type) | |
1984 | { | |
df58fc94 RS |
1985 | return (r_type == R_MIPS_CALL16 |
1986 | || r_type == R_MIPS16_CALL16 | |
1987 | || r_type == R_MICROMIPS_CALL16); | |
1988 | } | |
1989 | ||
1990 | static inline bfd_boolean | |
1991 | got_disp_reloc_p (unsigned int r_type) | |
1992 | { | |
1993 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
1994 | } | |
1995 | ||
1996 | static inline bfd_boolean | |
1997 | got_page_reloc_p (unsigned int r_type) | |
1998 | { | |
1999 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
2000 | } | |
2001 | ||
2002 | static inline bfd_boolean | |
2003 | got_ofst_reloc_p (unsigned int r_type) | |
2004 | { | |
2005 | return r_type == R_MIPS_GOT_OFST || r_type == R_MICROMIPS_GOT_OFST; | |
2006 | } | |
2007 | ||
2008 | static inline bfd_boolean | |
2009 | got_hi16_reloc_p (unsigned int r_type) | |
2010 | { | |
2011 | return r_type == R_MIPS_GOT_HI16 || r_type == R_MICROMIPS_GOT_HI16; | |
2012 | } | |
2013 | ||
2014 | static inline bfd_boolean | |
2015 | got_lo16_reloc_p (unsigned int r_type) | |
2016 | { | |
2017 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2018 | } | |
2019 | ||
2020 | static inline bfd_boolean | |
2021 | call_hi16_reloc_p (unsigned int r_type) | |
2022 | { | |
2023 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2024 | } | |
2025 | ||
2026 | static inline bfd_boolean | |
2027 | call_lo16_reloc_p (unsigned int r_type) | |
2028 | { | |
2029 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2030 | } |
2031 | ||
2032 | static inline bfd_boolean | |
2033 | hi16_reloc_p (int r_type) | |
2034 | { | |
df58fc94 RS |
2035 | return (r_type == R_MIPS_HI16 |
2036 | || r_type == R_MIPS16_HI16 | |
2037 | || r_type == R_MICROMIPS_HI16); | |
738e5348 | 2038 | } |
d6f16593 | 2039 | |
738e5348 RS |
2040 | static inline bfd_boolean |
2041 | lo16_reloc_p (int r_type) | |
2042 | { | |
df58fc94 RS |
2043 | return (r_type == R_MIPS_LO16 |
2044 | || r_type == R_MIPS16_LO16 | |
2045 | || r_type == R_MICROMIPS_LO16); | |
738e5348 RS |
2046 | } |
2047 | ||
2048 | static inline bfd_boolean | |
2049 | mips16_call_reloc_p (int r_type) | |
2050 | { | |
2051 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2052 | } | |
d6f16593 | 2053 | |
38a7df63 CF |
2054 | static inline bfd_boolean |
2055 | jal_reloc_p (int r_type) | |
2056 | { | |
df58fc94 RS |
2057 | return (r_type == R_MIPS_26 |
2058 | || r_type == R_MIPS16_26 | |
2059 | || r_type == R_MICROMIPS_26_S1); | |
2060 | } | |
2061 | ||
2062 | static inline bfd_boolean | |
2063 | micromips_branch_reloc_p (int r_type) | |
2064 | { | |
2065 | return (r_type == R_MICROMIPS_26_S1 | |
2066 | || r_type == R_MICROMIPS_PC16_S1 | |
2067 | || r_type == R_MICROMIPS_PC10_S1 | |
2068 | || r_type == R_MICROMIPS_PC7_S1); | |
2069 | } | |
2070 | ||
2071 | static inline bfd_boolean | |
2072 | tls_gd_reloc_p (unsigned int r_type) | |
2073 | { | |
d0f13682 CLT |
2074 | return (r_type == R_MIPS_TLS_GD |
2075 | || r_type == R_MIPS16_TLS_GD | |
2076 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2077 | } |
2078 | ||
2079 | static inline bfd_boolean | |
2080 | tls_ldm_reloc_p (unsigned int r_type) | |
2081 | { | |
d0f13682 CLT |
2082 | return (r_type == R_MIPS_TLS_LDM |
2083 | || r_type == R_MIPS16_TLS_LDM | |
2084 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2085 | } |
2086 | ||
2087 | static inline bfd_boolean | |
2088 | tls_gottprel_reloc_p (unsigned int r_type) | |
2089 | { | |
d0f13682 CLT |
2090 | return (r_type == R_MIPS_TLS_GOTTPREL |
2091 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2092 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2093 | } |
2094 | ||
d6f16593 | 2095 | void |
df58fc94 RS |
2096 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
2097 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2098 | { |
df58fc94 | 2099 | bfd_vma first, second, val; |
d6f16593 | 2100 | |
df58fc94 | 2101 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2102 | return; |
2103 | ||
df58fc94 RS |
2104 | /* Pick up the first and second halfwords of the instruction. */ |
2105 | first = bfd_get_16 (abfd, data); | |
2106 | second = bfd_get_16 (abfd, data + 2); | |
2107 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2108 | val = first << 16 | second; | |
2109 | else if (r_type != R_MIPS16_26) | |
2110 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2111 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2112 | else |
df58fc94 RS |
2113 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2114 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2115 | bfd_put_32 (abfd, val, data); |
2116 | } | |
2117 | ||
2118 | void | |
df58fc94 RS |
2119 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
2120 | bfd_boolean jal_shuffle, bfd_byte *data) | |
d6f16593 | 2121 | { |
df58fc94 | 2122 | bfd_vma first, second, val; |
d6f16593 | 2123 | |
df58fc94 | 2124 | if (!mips16_reloc_p (r_type) && !micromips_reloc_shuffle_p (r_type)) |
d6f16593 MR |
2125 | return; |
2126 | ||
2127 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2128 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2129 | { |
df58fc94 RS |
2130 | second = val & 0xffff; |
2131 | first = val >> 16; | |
2132 | } | |
2133 | else if (r_type != R_MIPS16_26) | |
2134 | { | |
2135 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2136 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2137 | } |
2138 | else | |
2139 | { | |
df58fc94 RS |
2140 | second = val & 0xffff; |
2141 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2142 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2143 | } |
df58fc94 RS |
2144 | bfd_put_16 (abfd, second, data + 2); |
2145 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2146 | } |
2147 | ||
b49e97c9 | 2148 | bfd_reloc_status_type |
9719ad41 RS |
2149 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2150 | arelent *reloc_entry, asection *input_section, | |
2151 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
2152 | { |
2153 | bfd_vma relocation; | |
a7ebbfdf | 2154 | bfd_signed_vma val; |
30ac9238 | 2155 | bfd_reloc_status_type status; |
b49e97c9 TS |
2156 | |
2157 | if (bfd_is_com_section (symbol->section)) | |
2158 | relocation = 0; | |
2159 | else | |
2160 | relocation = symbol->value; | |
2161 | ||
2162 | relocation += symbol->section->output_section->vma; | |
2163 | relocation += symbol->section->output_offset; | |
2164 | ||
07515404 | 2165 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
2166 | return bfd_reloc_outofrange; |
2167 | ||
b49e97c9 | 2168 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2169 | val = reloc_entry->addend; |
2170 | ||
30ac9238 | 2171 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2172 | |
b49e97c9 | 2173 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2174 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2175 | an external symbol. */ |
1049f94e | 2176 | if (! relocatable |
b49e97c9 TS |
2177 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2178 | val += relocation - gp; | |
2179 | ||
a7ebbfdf TS |
2180 | if (reloc_entry->howto->partial_inplace) |
2181 | { | |
30ac9238 RS |
2182 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2183 | (bfd_byte *) data | |
2184 | + reloc_entry->address); | |
2185 | if (status != bfd_reloc_ok) | |
2186 | return status; | |
a7ebbfdf TS |
2187 | } |
2188 | else | |
2189 | reloc_entry->addend = val; | |
b49e97c9 | 2190 | |
1049f94e | 2191 | if (relocatable) |
b49e97c9 | 2192 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2193 | |
2194 | return bfd_reloc_ok; | |
2195 | } | |
2196 | ||
2197 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
2198 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
2199 | that contains the relocation field and DATA points to the start of | |
2200 | INPUT_SECTION. */ | |
2201 | ||
2202 | struct mips_hi16 | |
2203 | { | |
2204 | struct mips_hi16 *next; | |
2205 | bfd_byte *data; | |
2206 | asection *input_section; | |
2207 | arelent rel; | |
2208 | }; | |
2209 | ||
2210 | /* FIXME: This should not be a static variable. */ | |
2211 | ||
2212 | static struct mips_hi16 *mips_hi16_list; | |
2213 | ||
2214 | /* A howto special_function for REL *HI16 relocations. We can only | |
2215 | calculate the correct value once we've seen the partnering | |
2216 | *LO16 relocation, so just save the information for later. | |
2217 | ||
2218 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2219 | However, as a GNU extension, we permit an arbitrary number of | |
2220 | *HI16s to be associated with a single *LO16. This significantly | |
2221 | simplies the relocation handling in gcc. */ | |
2222 | ||
2223 | bfd_reloc_status_type | |
2224 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2225 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
2226 | asection *input_section, bfd *output_bfd, | |
2227 | char **error_message ATTRIBUTE_UNUSED) | |
2228 | { | |
2229 | struct mips_hi16 *n; | |
2230 | ||
07515404 | 2231 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2232 | return bfd_reloc_outofrange; |
2233 | ||
2234 | n = bfd_malloc (sizeof *n); | |
2235 | if (n == NULL) | |
2236 | return bfd_reloc_outofrange; | |
2237 | ||
2238 | n->next = mips_hi16_list; | |
2239 | n->data = data; | |
2240 | n->input_section = input_section; | |
2241 | n->rel = *reloc_entry; | |
2242 | mips_hi16_list = n; | |
2243 | ||
2244 | if (output_bfd != NULL) | |
2245 | reloc_entry->address += input_section->output_offset; | |
2246 | ||
2247 | return bfd_reloc_ok; | |
2248 | } | |
2249 | ||
738e5348 | 2250 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2251 | like any other 16-bit relocation when applied to global symbols, but is |
2252 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2253 | ||
2254 | bfd_reloc_status_type | |
2255 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2256 | void *data, asection *input_section, | |
2257 | bfd *output_bfd, char **error_message) | |
2258 | { | |
2259 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2260 | || bfd_is_und_section (bfd_get_section (symbol)) | |
2261 | || bfd_is_com_section (bfd_get_section (symbol))) | |
2262 | /* The relocation is against a global symbol. */ | |
2263 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2264 | input_section, output_bfd, | |
2265 | error_message); | |
2266 | ||
2267 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2268 | input_section, output_bfd, error_message); | |
2269 | } | |
2270 | ||
2271 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2272 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2273 | any partnering high-part relocations as well. */ | |
2274 | ||
2275 | bfd_reloc_status_type | |
2276 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2277 | void *data, asection *input_section, | |
2278 | bfd *output_bfd, char **error_message) | |
2279 | { | |
2280 | bfd_vma vallo; | |
d6f16593 | 2281 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 2282 | |
07515404 | 2283 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2284 | return bfd_reloc_outofrange; |
2285 | ||
df58fc94 | 2286 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
d6f16593 | 2287 | location); |
df58fc94 RS |
2288 | vallo = bfd_get_32 (abfd, location); |
2289 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
2290 | location); | |
d6f16593 | 2291 | |
30ac9238 RS |
2292 | while (mips_hi16_list != NULL) |
2293 | { | |
2294 | bfd_reloc_status_type ret; | |
2295 | struct mips_hi16 *hi; | |
2296 | ||
2297 | hi = mips_hi16_list; | |
2298 | ||
738e5348 RS |
2299 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2300 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2301 | relocation (with a rightshift of 16). However, since GOT16 |
2302 | relocations can also be used with global symbols, their howto | |
2303 | has a rightshift of 0. */ | |
2304 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
2305 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
2306 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
2307 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
df58fc94 RS |
2308 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
2309 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, FALSE); | |
30ac9238 RS |
2310 | |
2311 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2312 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2313 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2314 | ||
30ac9238 RS |
2315 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2316 | hi->input_section, output_bfd, | |
2317 | error_message); | |
2318 | if (ret != bfd_reloc_ok) | |
2319 | return ret; | |
2320 | ||
2321 | mips_hi16_list = hi->next; | |
2322 | free (hi); | |
2323 | } | |
2324 | ||
2325 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2326 | input_section, output_bfd, | |
2327 | error_message); | |
2328 | } | |
2329 | ||
2330 | /* A generic howto special_function. This calculates and installs the | |
2331 | relocation itself, thus avoiding the oft-discussed problems in | |
2332 | bfd_perform_relocation and bfd_install_relocation. */ | |
2333 | ||
2334 | bfd_reloc_status_type | |
2335 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2336 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2337 | asection *input_section, bfd *output_bfd, | |
2338 | char **error_message ATTRIBUTE_UNUSED) | |
2339 | { | |
2340 | bfd_signed_vma val; | |
2341 | bfd_reloc_status_type status; | |
2342 | bfd_boolean relocatable; | |
2343 | ||
2344 | relocatable = (output_bfd != NULL); | |
2345 | ||
07515404 | 2346 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2347 | return bfd_reloc_outofrange; |
2348 | ||
2349 | /* Build up the field adjustment in VAL. */ | |
2350 | val = 0; | |
2351 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2352 | { | |
2353 | /* Either we're calculating the final field value or we have a | |
2354 | relocation against a section symbol. Add in the section's | |
2355 | offset or address. */ | |
2356 | val += symbol->section->output_section->vma; | |
2357 | val += symbol->section->output_offset; | |
2358 | } | |
2359 | ||
2360 | if (!relocatable) | |
2361 | { | |
2362 | /* We're calculating the final field value. Add in the symbol's value | |
2363 | and, if pc-relative, subtract the address of the field itself. */ | |
2364 | val += symbol->value; | |
2365 | if (reloc_entry->howto->pc_relative) | |
2366 | { | |
2367 | val -= input_section->output_section->vma; | |
2368 | val -= input_section->output_offset; | |
2369 | val -= reloc_entry->address; | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2374 | in the output file, and if the relocation uses a separate addend, | |
2375 | we just need to add VAL to that addend. Otherwise we need to add | |
2376 | VAL to the relocation field itself. */ | |
2377 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2378 | reloc_entry->addend += val; | |
2379 | else | |
2380 | { | |
d6f16593 MR |
2381 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2382 | ||
30ac9238 RS |
2383 | /* Add in the separate addend, if any. */ |
2384 | val += reloc_entry->addend; | |
2385 | ||
2386 | /* Add VAL to the relocation field. */ | |
df58fc94 RS |
2387 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
2388 | location); | |
30ac9238 | 2389 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2390 | location); |
df58fc94 RS |
2391 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, |
2392 | location); | |
d6f16593 | 2393 | |
30ac9238 RS |
2394 | if (status != bfd_reloc_ok) |
2395 | return status; | |
2396 | } | |
2397 | ||
2398 | if (relocatable) | |
2399 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2400 | |
2401 | return bfd_reloc_ok; | |
2402 | } | |
2403 | \f | |
2404 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2405 | on the equivalence of the two elements of the union. */ | |
2406 | ||
2407 | static void | |
9719ad41 RS |
2408 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2409 | Elf32_gptab *in) | |
b49e97c9 TS |
2410 | { |
2411 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2412 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2413 | } | |
2414 | ||
2415 | static void | |
9719ad41 RS |
2416 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2417 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2418 | { |
2419 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2420 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2421 | } | |
2422 | ||
2423 | static void | |
9719ad41 RS |
2424 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2425 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2426 | { |
2427 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2428 | H_PUT_32 (abfd, in->num, ex->num); | |
2429 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2430 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2431 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2432 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2433 | } | |
2434 | ||
2435 | static void | |
9719ad41 RS |
2436 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2437 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2438 | { |
2439 | unsigned long l; | |
2440 | ||
2441 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2442 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2443 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2444 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2445 | H_PUT_32 (abfd, l, ex->info); | |
2446 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2447 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2448 | } | |
b49e97c9 TS |
2449 | \f |
2450 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2451 | routines swap this structure in and out. They are used outside of | |
2452 | BFD, so they are globally visible. */ | |
2453 | ||
2454 | void | |
9719ad41 RS |
2455 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2456 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2457 | { |
2458 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2459 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2460 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2461 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2462 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2463 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2464 | } | |
2465 | ||
2466 | void | |
9719ad41 RS |
2467 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2468 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2469 | { |
2470 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2471 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2472 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2473 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2474 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2475 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2476 | } | |
2477 | ||
2478 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2479 | information in an Elf64_Reginfo structure. These routines swap | |
2480 | them in and out. They are globally visible because they are used | |
2481 | outside of BFD. These routines are here so that gas can call them | |
2482 | without worrying about whether the 64 bit ABI has been included. */ | |
2483 | ||
2484 | void | |
9719ad41 RS |
2485 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2486 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2487 | { |
2488 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2489 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2490 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2491 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2492 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2493 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2494 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2495 | } | |
2496 | ||
2497 | void | |
9719ad41 RS |
2498 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2499 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2500 | { |
2501 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2502 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2503 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2504 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2505 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2506 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2507 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2508 | } | |
2509 | ||
2510 | /* Swap in an options header. */ | |
2511 | ||
2512 | void | |
9719ad41 RS |
2513 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2514 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2515 | { |
2516 | in->kind = H_GET_8 (abfd, ex->kind); | |
2517 | in->size = H_GET_8 (abfd, ex->size); | |
2518 | in->section = H_GET_16 (abfd, ex->section); | |
2519 | in->info = H_GET_32 (abfd, ex->info); | |
2520 | } | |
2521 | ||
2522 | /* Swap out an options header. */ | |
2523 | ||
2524 | void | |
9719ad41 RS |
2525 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2526 | Elf_External_Options *ex) | |
b49e97c9 TS |
2527 | { |
2528 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2529 | H_PUT_8 (abfd, in->size, ex->size); | |
2530 | H_PUT_16 (abfd, in->section, ex->section); | |
2531 | H_PUT_32 (abfd, in->info, ex->info); | |
2532 | } | |
2533 | \f | |
2534 | /* This function is called via qsort() to sort the dynamic relocation | |
2535 | entries by increasing r_symndx value. */ | |
2536 | ||
2537 | static int | |
9719ad41 | 2538 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2539 | { |
947216bf AM |
2540 | Elf_Internal_Rela int_reloc1; |
2541 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2542 | int diff; |
b49e97c9 | 2543 | |
947216bf AM |
2544 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2545 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2546 | |
6870500c RS |
2547 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2548 | if (diff != 0) | |
2549 | return diff; | |
2550 | ||
2551 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2552 | return -1; | |
2553 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2554 | return 1; | |
2555 | return 0; | |
b49e97c9 TS |
2556 | } |
2557 | ||
f4416af6 AO |
2558 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2559 | ||
2560 | static int | |
7e3102a7 AM |
2561 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2562 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2563 | { |
7e3102a7 | 2564 | #ifdef BFD64 |
f4416af6 AO |
2565 | Elf_Internal_Rela int_reloc1[3]; |
2566 | Elf_Internal_Rela int_reloc2[3]; | |
2567 | ||
2568 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2569 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2570 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2571 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2572 | ||
6870500c RS |
2573 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2574 | return -1; | |
2575 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2576 | return 1; | |
2577 | ||
2578 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2579 | return -1; | |
2580 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2581 | return 1; | |
2582 | return 0; | |
7e3102a7 AM |
2583 | #else |
2584 | abort (); | |
2585 | #endif | |
f4416af6 AO |
2586 | } |
2587 | ||
2588 | ||
b49e97c9 TS |
2589 | /* This routine is used to write out ECOFF debugging external symbol |
2590 | information. It is called via mips_elf_link_hash_traverse. The | |
2591 | ECOFF external symbol information must match the ELF external | |
2592 | symbol information. Unfortunately, at this point we don't know | |
2593 | whether a symbol is required by reloc information, so the two | |
2594 | tables may wind up being different. We must sort out the external | |
2595 | symbol information before we can set the final size of the .mdebug | |
2596 | section, and we must set the size of the .mdebug section before we | |
2597 | can relocate any sections, and we can't know which symbols are | |
2598 | required by relocation until we relocate the sections. | |
2599 | Fortunately, it is relatively unlikely that any symbol will be | |
2600 | stripped but required by a reloc. In particular, it can not happen | |
2601 | when generating a final executable. */ | |
2602 | ||
b34976b6 | 2603 | static bfd_boolean |
9719ad41 | 2604 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2605 | { |
9719ad41 | 2606 | struct extsym_info *einfo = data; |
b34976b6 | 2607 | bfd_boolean strip; |
b49e97c9 TS |
2608 | asection *sec, *output_section; |
2609 | ||
b49e97c9 | 2610 | if (h->root.indx == -2) |
b34976b6 | 2611 | strip = FALSE; |
f5385ebf | 2612 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2613 | || h->root.ref_dynamic |
2614 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2615 | && !h->root.def_regular |
2616 | && !h->root.ref_regular) | |
b34976b6 | 2617 | strip = TRUE; |
b49e97c9 TS |
2618 | else if (einfo->info->strip == strip_all |
2619 | || (einfo->info->strip == strip_some | |
2620 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2621 | h->root.root.root.string, | |
b34976b6 AM |
2622 | FALSE, FALSE) == NULL)) |
2623 | strip = TRUE; | |
b49e97c9 | 2624 | else |
b34976b6 | 2625 | strip = FALSE; |
b49e97c9 TS |
2626 | |
2627 | if (strip) | |
b34976b6 | 2628 | return TRUE; |
b49e97c9 TS |
2629 | |
2630 | if (h->esym.ifd == -2) | |
2631 | { | |
2632 | h->esym.jmptbl = 0; | |
2633 | h->esym.cobol_main = 0; | |
2634 | h->esym.weakext = 0; | |
2635 | h->esym.reserved = 0; | |
2636 | h->esym.ifd = ifdNil; | |
2637 | h->esym.asym.value = 0; | |
2638 | h->esym.asym.st = stGlobal; | |
2639 | ||
2640 | if (h->root.root.type == bfd_link_hash_undefined | |
2641 | || h->root.root.type == bfd_link_hash_undefweak) | |
2642 | { | |
2643 | const char *name; | |
2644 | ||
2645 | /* Use undefined class. Also, set class and type for some | |
2646 | special symbols. */ | |
2647 | name = h->root.root.root.string; | |
2648 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2649 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2650 | { | |
2651 | h->esym.asym.sc = scData; | |
2652 | h->esym.asym.st = stLabel; | |
2653 | h->esym.asym.value = 0; | |
2654 | } | |
2655 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
2656 | { | |
2657 | h->esym.asym.sc = scAbs; | |
2658 | h->esym.asym.st = stLabel; | |
2659 | h->esym.asym.value = | |
2660 | mips_elf_hash_table (einfo->info)->procedure_count; | |
2661 | } | |
4a14403c | 2662 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
2663 | { |
2664 | h->esym.asym.sc = scAbs; | |
2665 | h->esym.asym.st = stLabel; | |
2666 | h->esym.asym.value = elf_gp (einfo->abfd); | |
2667 | } | |
2668 | else | |
2669 | h->esym.asym.sc = scUndefined; | |
2670 | } | |
2671 | else if (h->root.root.type != bfd_link_hash_defined | |
2672 | && h->root.root.type != bfd_link_hash_defweak) | |
2673 | h->esym.asym.sc = scAbs; | |
2674 | else | |
2675 | { | |
2676 | const char *name; | |
2677 | ||
2678 | sec = h->root.root.u.def.section; | |
2679 | output_section = sec->output_section; | |
2680 | ||
2681 | /* When making a shared library and symbol h is the one from | |
2682 | the another shared library, OUTPUT_SECTION may be null. */ | |
2683 | if (output_section == NULL) | |
2684 | h->esym.asym.sc = scUndefined; | |
2685 | else | |
2686 | { | |
2687 | name = bfd_section_name (output_section->owner, output_section); | |
2688 | ||
2689 | if (strcmp (name, ".text") == 0) | |
2690 | h->esym.asym.sc = scText; | |
2691 | else if (strcmp (name, ".data") == 0) | |
2692 | h->esym.asym.sc = scData; | |
2693 | else if (strcmp (name, ".sdata") == 0) | |
2694 | h->esym.asym.sc = scSData; | |
2695 | else if (strcmp (name, ".rodata") == 0 | |
2696 | || strcmp (name, ".rdata") == 0) | |
2697 | h->esym.asym.sc = scRData; | |
2698 | else if (strcmp (name, ".bss") == 0) | |
2699 | h->esym.asym.sc = scBss; | |
2700 | else if (strcmp (name, ".sbss") == 0) | |
2701 | h->esym.asym.sc = scSBss; | |
2702 | else if (strcmp (name, ".init") == 0) | |
2703 | h->esym.asym.sc = scInit; | |
2704 | else if (strcmp (name, ".fini") == 0) | |
2705 | h->esym.asym.sc = scFini; | |
2706 | else | |
2707 | h->esym.asym.sc = scAbs; | |
2708 | } | |
2709 | } | |
2710 | ||
2711 | h->esym.asym.reserved = 0; | |
2712 | h->esym.asym.index = indexNil; | |
2713 | } | |
2714 | ||
2715 | if (h->root.root.type == bfd_link_hash_common) | |
2716 | h->esym.asym.value = h->root.root.u.c.size; | |
2717 | else if (h->root.root.type == bfd_link_hash_defined | |
2718 | || h->root.root.type == bfd_link_hash_defweak) | |
2719 | { | |
2720 | if (h->esym.asym.sc == scCommon) | |
2721 | h->esym.asym.sc = scBss; | |
2722 | else if (h->esym.asym.sc == scSCommon) | |
2723 | h->esym.asym.sc = scSBss; | |
2724 | ||
2725 | sec = h->root.root.u.def.section; | |
2726 | output_section = sec->output_section; | |
2727 | if (output_section != NULL) | |
2728 | h->esym.asym.value = (h->root.root.u.def.value | |
2729 | + sec->output_offset | |
2730 | + output_section->vma); | |
2731 | else | |
2732 | h->esym.asym.value = 0; | |
2733 | } | |
33bb52fb | 2734 | else |
b49e97c9 TS |
2735 | { |
2736 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
2737 | |
2738 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 2739 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 2740 | |
33bb52fb | 2741 | if (hd->needs_lazy_stub) |
b49e97c9 TS |
2742 | { |
2743 | /* Set type and value for a symbol with a function stub. */ | |
2744 | h->esym.asym.st = stProc; | |
2745 | sec = hd->root.root.u.def.section; | |
2746 | if (sec == NULL) | |
2747 | h->esym.asym.value = 0; | |
2748 | else | |
2749 | { | |
2750 | output_section = sec->output_section; | |
2751 | if (output_section != NULL) | |
2752 | h->esym.asym.value = (hd->root.plt.offset | |
2753 | + sec->output_offset | |
2754 | + output_section->vma); | |
2755 | else | |
2756 | h->esym.asym.value = 0; | |
2757 | } | |
b49e97c9 TS |
2758 | } |
2759 | } | |
2760 | ||
2761 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2762 | h->root.root.root.string, | |
2763 | &h->esym)) | |
2764 | { | |
b34976b6 AM |
2765 | einfo->failed = TRUE; |
2766 | return FALSE; | |
b49e97c9 TS |
2767 | } |
2768 | ||
b34976b6 | 2769 | return TRUE; |
b49e97c9 TS |
2770 | } |
2771 | ||
2772 | /* A comparison routine used to sort .gptab entries. */ | |
2773 | ||
2774 | static int | |
9719ad41 | 2775 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2776 | { |
9719ad41 RS |
2777 | const Elf32_gptab *a1 = p1; |
2778 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2779 | |
2780 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2781 | } | |
2782 | \f | |
b15e6682 | 2783 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2784 | |
2785 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2786 | hash number. */ | |
2787 | ||
2788 | static INLINE hashval_t | |
9719ad41 | 2789 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2790 | { |
2791 | #ifdef BFD64 | |
2792 | return addr + (addr >> 32); | |
2793 | #else | |
2794 | return addr; | |
2795 | #endif | |
2796 | } | |
2797 | ||
2798 | /* got_entries only match if they're identical, except for gotidx, so | |
2799 | use all fields to compute the hash, and compare the appropriate | |
2800 | union members. */ | |
2801 | ||
b15e6682 | 2802 | static hashval_t |
9719ad41 | 2803 | mips_elf_got_entry_hash (const void *entry_) |
b15e6682 AO |
2804 | { |
2805 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2806 | ||
38985a1c | 2807 | return entry->symndx |
0f20cc35 | 2808 | + ((entry->tls_type & GOT_TLS_LDM) << 17) |
f4416af6 | 2809 | + (! entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
38985a1c AO |
2810 | : entry->abfd->id |
2811 | + (entry->symndx >= 0 ? mips_elf_hash_bfd_vma (entry->d.addend) | |
2812 | : entry->d.h->root.root.root.hash)); | |
b15e6682 AO |
2813 | } |
2814 | ||
2815 | static int | |
9719ad41 | 2816 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
b15e6682 AO |
2817 | { |
2818 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2819 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2820 | ||
0f20cc35 DJ |
2821 | /* An LDM entry can only match another LDM entry. */ |
2822 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2823 | return 0; | |
2824 | ||
b15e6682 | 2825 | return e1->abfd == e2->abfd && e1->symndx == e2->symndx |
f4416af6 AO |
2826 | && (! e1->abfd ? e1->d.address == e2->d.address |
2827 | : e1->symndx >= 0 ? e1->d.addend == e2->d.addend | |
2828 | : e1->d.h == e2->d.h); | |
2829 | } | |
2830 | ||
2831 | /* multi_got_entries are still a match in the case of global objects, | |
2832 | even if the input bfd in which they're referenced differs, so the | |
2833 | hash computation and compare functions are adjusted | |
2834 | accordingly. */ | |
2835 | ||
2836 | static hashval_t | |
9719ad41 | 2837 | mips_elf_multi_got_entry_hash (const void *entry_) |
f4416af6 AO |
2838 | { |
2839 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2840 | ||
2841 | return entry->symndx | |
2842 | + (! entry->abfd | |
2843 | ? mips_elf_hash_bfd_vma (entry->d.address) | |
2844 | : entry->symndx >= 0 | |
0f20cc35 DJ |
2845 | ? ((entry->tls_type & GOT_TLS_LDM) |
2846 | ? (GOT_TLS_LDM << 17) | |
2847 | : (entry->abfd->id | |
2848 | + mips_elf_hash_bfd_vma (entry->d.addend))) | |
f4416af6 AO |
2849 | : entry->d.h->root.root.root.hash); |
2850 | } | |
2851 | ||
2852 | static int | |
9719ad41 | 2853 | mips_elf_multi_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2854 | { |
2855 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2856 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2857 | ||
0f20cc35 DJ |
2858 | /* Any two LDM entries match. */ |
2859 | if (e1->tls_type & e2->tls_type & GOT_TLS_LDM) | |
2860 | return 1; | |
2861 | ||
2862 | /* Nothing else matches an LDM entry. */ | |
2863 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2864 | return 0; | |
2865 | ||
f4416af6 AO |
2866 | return e1->symndx == e2->symndx |
2867 | && (e1->symndx >= 0 ? e1->abfd == e2->abfd && e1->d.addend == e2->d.addend | |
2868 | : e1->abfd == NULL || e2->abfd == NULL | |
2869 | ? e1->abfd == e2->abfd && e1->d.address == e2->d.address | |
2870 | : e1->d.h == e2->d.h); | |
b15e6682 | 2871 | } |
c224138d RS |
2872 | |
2873 | static hashval_t | |
2874 | mips_got_page_entry_hash (const void *entry_) | |
2875 | { | |
2876 | const struct mips_got_page_entry *entry; | |
2877 | ||
2878 | entry = (const struct mips_got_page_entry *) entry_; | |
2879 | return entry->abfd->id + entry->symndx; | |
2880 | } | |
2881 | ||
2882 | static int | |
2883 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2884 | { | |
2885 | const struct mips_got_page_entry *entry1, *entry2; | |
2886 | ||
2887 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2888 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
2889 | return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx; | |
2890 | } | |
b15e6682 | 2891 | \f |
0a44bf69 RS |
2892 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2893 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2894 | if creation fails. */ | |
f4416af6 AO |
2895 | |
2896 | static asection * | |
0a44bf69 | 2897 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2898 | { |
0a44bf69 | 2899 | const char *dname; |
f4416af6 | 2900 | asection *sreloc; |
0a44bf69 | 2901 | bfd *dynobj; |
f4416af6 | 2902 | |
0a44bf69 RS |
2903 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2904 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 2905 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
2906 | if (sreloc == NULL && create_p) |
2907 | { | |
3d4d4302 AM |
2908 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
2909 | (SEC_ALLOC | |
2910 | | SEC_LOAD | |
2911 | | SEC_HAS_CONTENTS | |
2912 | | SEC_IN_MEMORY | |
2913 | | SEC_LINKER_CREATED | |
2914 | | SEC_READONLY)); | |
f4416af6 | 2915 | if (sreloc == NULL |
f4416af6 | 2916 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2917 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2918 | return NULL; |
2919 | } | |
2920 | return sreloc; | |
2921 | } | |
2922 | ||
0f20cc35 DJ |
2923 | /* Count the number of relocations needed for a TLS GOT entry, with |
2924 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2925 | is NULL). */ | |
2926 | ||
2927 | static int | |
2928 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2929 | struct elf_link_hash_entry *h) | |
2930 | { | |
2931 | int indx = 0; | |
2932 | int ret = 0; | |
2933 | bfd_boolean need_relocs = FALSE; | |
2934 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2935 | ||
2936 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2937 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
2938 | indx = h->dynindx; | |
2939 | ||
2940 | if ((info->shared || indx != 0) | |
2941 | && (h == NULL | |
2942 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2943 | || h->root.type != bfd_link_hash_undefweak)) | |
2944 | need_relocs = TRUE; | |
2945 | ||
2946 | if (!need_relocs) | |
2947 | return FALSE; | |
2948 | ||
2949 | if (tls_type & GOT_TLS_GD) | |
2950 | { | |
2951 | ret++; | |
2952 | if (indx != 0) | |
2953 | ret++; | |
2954 | } | |
2955 | ||
2956 | if (tls_type & GOT_TLS_IE) | |
2957 | ret++; | |
2958 | ||
2959 | if ((tls_type & GOT_TLS_LDM) && info->shared) | |
2960 | ret++; | |
2961 | ||
2962 | return ret; | |
2963 | } | |
2964 | ||
2965 | /* Count the number of TLS relocations required for the GOT entry in | |
2966 | ARG1, if it describes a local symbol. */ | |
2967 | ||
2968 | static int | |
2969 | mips_elf_count_local_tls_relocs (void **arg1, void *arg2) | |
2970 | { | |
2971 | struct mips_got_entry *entry = * (struct mips_got_entry **) arg1; | |
2972 | struct mips_elf_count_tls_arg *arg = arg2; | |
2973 | ||
2974 | if (entry->abfd != NULL && entry->symndx != -1) | |
2975 | arg->needed += mips_tls_got_relocs (arg->info, entry->tls_type, NULL); | |
2976 | ||
2977 | return 1; | |
2978 | } | |
2979 | ||
2980 | /* Count the number of TLS GOT entries required for the global (or | |
2981 | forced-local) symbol in ARG1. */ | |
2982 | ||
2983 | static int | |
2984 | mips_elf_count_global_tls_entries (void *arg1, void *arg2) | |
2985 | { | |
2986 | struct mips_elf_link_hash_entry *hm | |
2987 | = (struct mips_elf_link_hash_entry *) arg1; | |
2988 | struct mips_elf_count_tls_arg *arg = arg2; | |
2989 | ||
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 | ||
3008 | arg->needed += mips_tls_got_relocs (arg->info, hm->tls_type, &hm->root); | |
3009 | ||
3010 | return 1; | |
3011 | } | |
3012 | ||
3013 | /* Output a simple dynamic relocation into SRELOC. */ | |
3014 | ||
3015 | static void | |
3016 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3017 | asection *sreloc, | |
861fb55a | 3018 | unsigned long reloc_index, |
0f20cc35 DJ |
3019 | unsigned long indx, |
3020 | int r_type, | |
3021 | bfd_vma offset) | |
3022 | { | |
3023 | Elf_Internal_Rela rel[3]; | |
3024 | ||
3025 | memset (rel, 0, sizeof (rel)); | |
3026 | ||
3027 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3028 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3029 | ||
3030 | if (ABI_64_P (output_bfd)) | |
3031 | { | |
3032 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3033 | (output_bfd, &rel[0], | |
3034 | (sreloc->contents | |
861fb55a | 3035 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3036 | } |
3037 | else | |
3038 | bfd_elf32_swap_reloc_out | |
3039 | (output_bfd, &rel[0], | |
3040 | (sreloc->contents | |
861fb55a | 3041 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3042 | } |
3043 | ||
3044 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3045 | ||
3046 | static void | |
3047 | mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset, | |
3048 | unsigned char *tls_type_p, | |
3049 | struct bfd_link_info *info, | |
3050 | struct mips_elf_link_hash_entry *h, | |
3051 | bfd_vma value) | |
3052 | { | |
23cc69b6 | 3053 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3054 | int indx; |
3055 | asection *sreloc, *sgot; | |
3056 | bfd_vma offset, offset2; | |
0f20cc35 DJ |
3057 | bfd_boolean need_relocs = FALSE; |
3058 | ||
23cc69b6 | 3059 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3060 | if (htab == NULL) |
3061 | return; | |
3062 | ||
23cc69b6 | 3063 | sgot = htab->sgot; |
0f20cc35 DJ |
3064 | |
3065 | indx = 0; | |
3066 | if (h != NULL) | |
3067 | { | |
3068 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
3069 | ||
3070 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
3071 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3072 | indx = h->root.dynindx; | |
3073 | } | |
3074 | ||
3075 | if (*tls_type_p & GOT_TLS_DONE) | |
3076 | return; | |
3077 | ||
3078 | if ((info->shared || indx != 0) | |
3079 | && (h == NULL | |
3080 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3081 | || h->root.type != bfd_link_hash_undefweak)) | |
3082 | need_relocs = TRUE; | |
3083 | ||
3084 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3085 | be defined at all; assume that the value doesn't matter in that | |
3086 | case. Otherwise complain if we would use the value. */ | |
3087 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3088 | || h->root.root.type == bfd_link_hash_undefweak); | |
3089 | ||
3090 | /* Emit necessary relocations. */ | |
0a44bf69 | 3091 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
0f20cc35 DJ |
3092 | |
3093 | /* General Dynamic. */ | |
3094 | if (*tls_type_p & GOT_TLS_GD) | |
3095 | { | |
3096 | offset = got_offset; | |
3097 | offset2 = offset + MIPS_ELF_GOT_SIZE (abfd); | |
3098 | ||
3099 | if (need_relocs) | |
3100 | { | |
3101 | mips_elf_output_dynamic_relocation | |
861fb55a | 3102 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3103 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3104 | sgot->output_offset + sgot->output_section->vma + offset); | |
3105 | ||
3106 | if (indx) | |
3107 | mips_elf_output_dynamic_relocation | |
861fb55a | 3108 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3109 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
3110 | sgot->output_offset + sgot->output_section->vma + offset2); | |
3111 | else | |
3112 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
3113 | sgot->contents + offset2); | |
3114 | } | |
3115 | else | |
3116 | { | |
3117 | MIPS_ELF_PUT_WORD (abfd, 1, | |
3118 | sgot->contents + offset); | |
3119 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
3120 | sgot->contents + offset2); | |
3121 | } | |
3122 | ||
3123 | got_offset += 2 * MIPS_ELF_GOT_SIZE (abfd); | |
3124 | } | |
3125 | ||
3126 | /* Initial Exec model. */ | |
3127 | if (*tls_type_p & GOT_TLS_IE) | |
3128 | { | |
3129 | offset = got_offset; | |
3130 | ||
3131 | if (need_relocs) | |
3132 | { | |
3133 | if (indx == 0) | |
3134 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
3135 | sgot->contents + offset); | |
3136 | else | |
3137 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3138 | sgot->contents + offset); | |
3139 | ||
3140 | mips_elf_output_dynamic_relocation | |
861fb55a | 3141 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3142 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
3143 | sgot->output_offset + sgot->output_section->vma + offset); | |
3144 | } | |
3145 | else | |
3146 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
3147 | sgot->contents + offset); | |
3148 | } | |
3149 | ||
3150 | if (*tls_type_p & GOT_TLS_LDM) | |
3151 | { | |
3152 | /* The initial offset is zero, and the LD offsets will include the | |
3153 | bias by DTP_OFFSET. */ | |
3154 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3155 | sgot->contents + got_offset | |
3156 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3157 | ||
3158 | if (!info->shared) | |
3159 | MIPS_ELF_PUT_WORD (abfd, 1, | |
3160 | sgot->contents + got_offset); | |
3161 | else | |
3162 | mips_elf_output_dynamic_relocation | |
861fb55a | 3163 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3164 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3165 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
3166 | } | |
3167 | ||
3168 | *tls_type_p |= GOT_TLS_DONE; | |
3169 | } | |
3170 | ||
3171 | /* Return the GOT index to use for a relocation of type R_TYPE against | |
3172 | a symbol accessed using TLS_TYPE models. The GOT entries for this | |
3173 | symbol in this GOT start at GOT_INDEX. This function initializes the | |
3174 | GOT entries and corresponding relocations. */ | |
3175 | ||
3176 | static bfd_vma | |
3177 | mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type, | |
3178 | int r_type, struct bfd_link_info *info, | |
3179 | struct mips_elf_link_hash_entry *h, bfd_vma symbol) | |
3180 | { | |
df58fc94 RS |
3181 | BFD_ASSERT (tls_gottprel_reloc_p (r_type) |
3182 | || tls_gd_reloc_p (r_type) | |
3183 | || tls_ldm_reloc_p (r_type)); | |
0f20cc35 DJ |
3184 | |
3185 | mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol); | |
3186 | ||
df58fc94 | 3187 | if (tls_gottprel_reloc_p (r_type)) |
0f20cc35 DJ |
3188 | { |
3189 | BFD_ASSERT (*tls_type & GOT_TLS_IE); | |
3190 | if (*tls_type & GOT_TLS_GD) | |
3191 | return got_index + 2 * MIPS_ELF_GOT_SIZE (abfd); | |
3192 | else | |
3193 | return got_index; | |
3194 | } | |
3195 | ||
df58fc94 | 3196 | if (tls_gd_reloc_p (r_type)) |
0f20cc35 DJ |
3197 | { |
3198 | BFD_ASSERT (*tls_type & GOT_TLS_GD); | |
3199 | return got_index; | |
3200 | } | |
3201 | ||
df58fc94 | 3202 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 DJ |
3203 | { |
3204 | BFD_ASSERT (*tls_type & GOT_TLS_LDM); | |
3205 | return got_index; | |
3206 | } | |
3207 | ||
3208 | return got_index; | |
3209 | } | |
3210 | ||
0a44bf69 RS |
3211 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3212 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3213 | will be negative. */ | |
3214 | ||
3215 | static bfd_vma | |
3216 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3217 | struct elf_link_hash_entry *h) | |
3218 | { | |
3219 | bfd_vma plt_index, got_address, got_value; | |
3220 | struct mips_elf_link_hash_table *htab; | |
3221 | ||
3222 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3223 | BFD_ASSERT (htab != NULL); |
3224 | ||
0a44bf69 RS |
3225 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); |
3226 | ||
861fb55a DJ |
3227 | /* This function only works for VxWorks, because a non-VxWorks .got.plt |
3228 | section starts with reserved entries. */ | |
3229 | BFD_ASSERT (htab->is_vxworks); | |
3230 | ||
0a44bf69 RS |
3231 | /* Calculate the index of the symbol's PLT entry. */ |
3232 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
3233 | ||
3234 | /* Calculate the address of the associated .got.plt entry. */ | |
3235 | got_address = (htab->sgotplt->output_section->vma | |
3236 | + htab->sgotplt->output_offset | |
3237 | + plt_index * 4); | |
3238 | ||
3239 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3240 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3241 | + htab->root.hgot->root.u.def.section->output_offset | |
3242 | + htab->root.hgot->root.u.def.value); | |
3243 | ||
3244 | return got_address - got_value; | |
3245 | } | |
3246 | ||
5c18022e | 3247 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3248 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3249 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3250 | offset can be found. */ | |
b49e97c9 TS |
3251 | |
3252 | static bfd_vma | |
9719ad41 | 3253 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3254 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3255 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3256 | { |
a8028dd0 | 3257 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3258 | struct mips_got_entry *entry; |
b49e97c9 | 3259 | |
a8028dd0 | 3260 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3261 | BFD_ASSERT (htab != NULL); |
3262 | ||
a8028dd0 RS |
3263 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3264 | r_symndx, h, r_type); | |
0f20cc35 | 3265 | if (!entry) |
b15e6682 | 3266 | return MINUS_ONE; |
0f20cc35 DJ |
3267 | |
3268 | if (TLS_RELOC_P (r_type)) | |
ead49a57 | 3269 | { |
a8028dd0 | 3270 | if (entry->symndx == -1 && htab->got_info->next == NULL) |
ead49a57 RS |
3271 | /* A type (3) entry in the single-GOT case. We use the symbol's |
3272 | hash table entry to track the index. */ | |
3273 | return mips_tls_got_index (abfd, h->tls_got_offset, &h->tls_type, | |
3274 | r_type, info, h, value); | |
3275 | else | |
3276 | return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type, | |
3277 | r_type, info, h, value); | |
3278 | } | |
0f20cc35 DJ |
3279 | else |
3280 | return entry->gotidx; | |
b49e97c9 TS |
3281 | } |
3282 | ||
3283 | /* Returns the GOT index for the global symbol indicated by H. */ | |
3284 | ||
3285 | static bfd_vma | |
0f20cc35 DJ |
3286 | mips_elf_global_got_index (bfd *abfd, bfd *ibfd, struct elf_link_hash_entry *h, |
3287 | int r_type, struct bfd_link_info *info) | |
b49e97c9 | 3288 | { |
a8028dd0 | 3289 | struct mips_elf_link_hash_table *htab; |
91d6fa6a | 3290 | bfd_vma got_index; |
f4416af6 | 3291 | struct mips_got_info *g, *gg; |
d0c7ff07 | 3292 | long global_got_dynindx = 0; |
b49e97c9 | 3293 | |
a8028dd0 | 3294 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3295 | BFD_ASSERT (htab != NULL); |
3296 | ||
a8028dd0 | 3297 | gg = g = htab->got_info; |
f4416af6 AO |
3298 | if (g->bfd2got && ibfd) |
3299 | { | |
3300 | struct mips_got_entry e, *p; | |
143d77c5 | 3301 | |
f4416af6 AO |
3302 | BFD_ASSERT (h->dynindx >= 0); |
3303 | ||
3304 | g = mips_elf_got_for_ibfd (g, ibfd); | |
0f20cc35 | 3305 | if (g->next != gg || TLS_RELOC_P (r_type)) |
f4416af6 AO |
3306 | { |
3307 | e.abfd = ibfd; | |
3308 | e.symndx = -1; | |
3309 | e.d.h = (struct mips_elf_link_hash_entry *)h; | |
0f20cc35 | 3310 | e.tls_type = 0; |
f4416af6 | 3311 | |
9719ad41 | 3312 | p = htab_find (g->got_entries, &e); |
f4416af6 AO |
3313 | |
3314 | BFD_ASSERT (p->gotidx > 0); | |
0f20cc35 DJ |
3315 | |
3316 | if (TLS_RELOC_P (r_type)) | |
3317 | { | |
3318 | bfd_vma value = MINUS_ONE; | |
3319 | if ((h->root.type == bfd_link_hash_defined | |
3320 | || h->root.type == bfd_link_hash_defweak) | |
3321 | && h->root.u.def.section->output_section) | |
3322 | value = (h->root.u.def.value | |
3323 | + h->root.u.def.section->output_offset | |
3324 | + h->root.u.def.section->output_section->vma); | |
3325 | ||
3326 | return mips_tls_got_index (abfd, p->gotidx, &p->tls_type, r_type, | |
3327 | info, e.d.h, value); | |
3328 | } | |
3329 | else | |
3330 | return p->gotidx; | |
f4416af6 AO |
3331 | } |
3332 | } | |
3333 | ||
3334 | if (gg->global_gotsym != NULL) | |
3335 | global_got_dynindx = gg->global_gotsym->dynindx; | |
b49e97c9 | 3336 | |
0f20cc35 DJ |
3337 | if (TLS_RELOC_P (r_type)) |
3338 | { | |
3339 | struct mips_elf_link_hash_entry *hm | |
3340 | = (struct mips_elf_link_hash_entry *) h; | |
3341 | bfd_vma value = MINUS_ONE; | |
3342 | ||
3343 | if ((h->root.type == bfd_link_hash_defined | |
3344 | || h->root.type == bfd_link_hash_defweak) | |
3345 | && h->root.u.def.section->output_section) | |
3346 | value = (h->root.u.def.value | |
3347 | + h->root.u.def.section->output_offset | |
3348 | + h->root.u.def.section->output_section->vma); | |
3349 | ||
91d6fa6a NC |
3350 | got_index = mips_tls_got_index (abfd, hm->tls_got_offset, &hm->tls_type, |
3351 | r_type, info, hm, value); | |
0f20cc35 DJ |
3352 | } |
3353 | else | |
3354 | { | |
3355 | /* Once we determine the global GOT entry with the lowest dynamic | |
3356 | symbol table index, we must put all dynamic symbols with greater | |
3357 | indices into the GOT. That makes it easy to calculate the GOT | |
3358 | offset. */ | |
3359 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
91d6fa6a NC |
3360 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) |
3361 | * MIPS_ELF_GOT_SIZE (abfd)); | |
0f20cc35 | 3362 | } |
91d6fa6a | 3363 | BFD_ASSERT (got_index < htab->sgot->size); |
b49e97c9 | 3364 | |
91d6fa6a | 3365 | return got_index; |
b49e97c9 TS |
3366 | } |
3367 | ||
5c18022e RS |
3368 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3369 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3370 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3371 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3372 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3373 | |
3374 | static bfd_vma | |
9719ad41 | 3375 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3376 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3377 | { |
91d6fa6a | 3378 | bfd_vma page, got_index; |
b15e6682 | 3379 | struct mips_got_entry *entry; |
b49e97c9 | 3380 | |
0a44bf69 | 3381 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3382 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3383 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3384 | |
b15e6682 AO |
3385 | if (!entry) |
3386 | return MINUS_ONE; | |
143d77c5 | 3387 | |
91d6fa6a | 3388 | got_index = entry->gotidx; |
b49e97c9 TS |
3389 | |
3390 | if (offsetp) | |
f4416af6 | 3391 | *offsetp = value - entry->d.address; |
b49e97c9 | 3392 | |
91d6fa6a | 3393 | return got_index; |
b49e97c9 TS |
3394 | } |
3395 | ||
738e5348 | 3396 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3397 | EXTERNAL is true if the relocation was originally against a global |
3398 | symbol that binds locally. */ | |
b49e97c9 TS |
3399 | |
3400 | static bfd_vma | |
9719ad41 | 3401 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3402 | bfd_vma value, bfd_boolean external) |
b49e97c9 | 3403 | { |
b15e6682 | 3404 | struct mips_got_entry *entry; |
b49e97c9 | 3405 | |
0a44bf69 RS |
3406 | /* GOT16 relocations against local symbols are followed by a LO16 |
3407 | relocation; those against global symbols are not. Thus if the | |
3408 | symbol was originally local, the GOT16 relocation should load the | |
3409 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3410 | if (! external) |
0a44bf69 | 3411 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3412 | |
738e5348 RS |
3413 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3414 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3415 | same in all cases. */ | |
a8028dd0 RS |
3416 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3417 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3418 | if (entry) |
3419 | return entry->gotidx; | |
3420 | else | |
3421 | return MINUS_ONE; | |
b49e97c9 TS |
3422 | } |
3423 | ||
3424 | /* Returns the offset for the entry at the INDEXth position | |
3425 | in the GOT. */ | |
3426 | ||
3427 | static bfd_vma | |
a8028dd0 | 3428 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3429 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3430 | { |
a8028dd0 | 3431 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3432 | asection *sgot; |
3433 | bfd_vma gp; | |
3434 | ||
a8028dd0 | 3435 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3436 | BFD_ASSERT (htab != NULL); |
3437 | ||
a8028dd0 | 3438 | sgot = htab->sgot; |
f4416af6 | 3439 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3440 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3441 | |
91d6fa6a | 3442 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3443 | } |
3444 | ||
0a44bf69 RS |
3445 | /* Create and return a local GOT entry for VALUE, which was calculated |
3446 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3447 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3448 | instead. */ | |
b49e97c9 | 3449 | |
b15e6682 | 3450 | static struct mips_got_entry * |
0a44bf69 | 3451 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3452 | bfd *ibfd, bfd_vma value, |
5c18022e | 3453 | unsigned long r_symndx, |
0f20cc35 DJ |
3454 | struct mips_elf_link_hash_entry *h, |
3455 | int r_type) | |
b49e97c9 | 3456 | { |
b15e6682 | 3457 | struct mips_got_entry entry, **loc; |
f4416af6 | 3458 | struct mips_got_info *g; |
0a44bf69 RS |
3459 | struct mips_elf_link_hash_table *htab; |
3460 | ||
3461 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3462 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3463 | |
f4416af6 AO |
3464 | entry.abfd = NULL; |
3465 | entry.symndx = -1; | |
3466 | entry.d.address = value; | |
0f20cc35 | 3467 | entry.tls_type = 0; |
f4416af6 | 3468 | |
a8028dd0 | 3469 | g = mips_elf_got_for_ibfd (htab->got_info, ibfd); |
f4416af6 AO |
3470 | if (g == NULL) |
3471 | { | |
a8028dd0 | 3472 | g = mips_elf_got_for_ibfd (htab->got_info, abfd); |
f4416af6 AO |
3473 | BFD_ASSERT (g != NULL); |
3474 | } | |
b15e6682 | 3475 | |
020d7251 RS |
3476 | /* This function shouldn't be called for symbols that live in the global |
3477 | area of the GOT. */ | |
3478 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 DJ |
3479 | if (TLS_RELOC_P (r_type)) |
3480 | { | |
3481 | struct mips_got_entry *p; | |
3482 | ||
3483 | entry.abfd = ibfd; | |
df58fc94 | 3484 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 DJ |
3485 | { |
3486 | entry.tls_type = GOT_TLS_LDM; | |
3487 | entry.symndx = 0; | |
3488 | entry.d.addend = 0; | |
3489 | } | |
3490 | else if (h == NULL) | |
3491 | { | |
3492 | entry.symndx = r_symndx; | |
3493 | entry.d.addend = 0; | |
3494 | } | |
3495 | else | |
3496 | entry.d.h = h; | |
3497 | ||
3498 | p = (struct mips_got_entry *) | |
3499 | htab_find (g->got_entries, &entry); | |
3500 | ||
3501 | BFD_ASSERT (p); | |
3502 | return p; | |
3503 | } | |
3504 | ||
b15e6682 AO |
3505 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, |
3506 | INSERT); | |
3507 | if (*loc) | |
3508 | return *loc; | |
143d77c5 | 3509 | |
b15e6682 | 3510 | entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; |
0f20cc35 | 3511 | entry.tls_type = 0; |
b15e6682 AO |
3512 | |
3513 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3514 | ||
3515 | if (! *loc) | |
3516 | return NULL; | |
143d77c5 | 3517 | |
b15e6682 AO |
3518 | memcpy (*loc, &entry, sizeof entry); |
3519 | ||
8275b357 | 3520 | if (g->assigned_gotno > g->local_gotno) |
b49e97c9 | 3521 | { |
f4416af6 | 3522 | (*loc)->gotidx = -1; |
b49e97c9 TS |
3523 | /* We didn't allocate enough space in the GOT. */ |
3524 | (*_bfd_error_handler) | |
3525 | (_("not enough GOT space for local GOT entries")); | |
3526 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3527 | return NULL; |
b49e97c9 TS |
3528 | } |
3529 | ||
3530 | MIPS_ELF_PUT_WORD (abfd, value, | |
a8028dd0 | 3531 | (htab->sgot->contents + entry.gotidx)); |
b15e6682 | 3532 | |
5c18022e | 3533 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
3534 | if (htab->is_vxworks) |
3535 | { | |
3536 | Elf_Internal_Rela outrel; | |
5c18022e | 3537 | asection *s; |
91d6fa6a | 3538 | bfd_byte *rloc; |
0a44bf69 | 3539 | bfd_vma got_address; |
0a44bf69 RS |
3540 | |
3541 | s = mips_elf_rel_dyn_section (info, FALSE); | |
a8028dd0 RS |
3542 | got_address = (htab->sgot->output_section->vma |
3543 | + htab->sgot->output_offset | |
0a44bf69 RS |
3544 | + entry.gotidx); |
3545 | ||
91d6fa6a | 3546 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3547 | outrel.r_offset = got_address; |
5c18022e RS |
3548 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3549 | outrel.r_addend = value; | |
91d6fa6a | 3550 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3551 | } |
3552 | ||
b15e6682 | 3553 | return *loc; |
b49e97c9 TS |
3554 | } |
3555 | ||
d4596a51 RS |
3556 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3557 | The number might be exact or a worst-case estimate, depending on how | |
3558 | much information is available to elf_backend_omit_section_dynsym at | |
3559 | the current linking stage. */ | |
3560 | ||
3561 | static bfd_size_type | |
3562 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3563 | { | |
3564 | bfd_size_type count; | |
3565 | ||
3566 | count = 0; | |
3567 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
3568 | { | |
3569 | asection *p; | |
3570 | const struct elf_backend_data *bed; | |
3571 | ||
3572 | bed = get_elf_backend_data (output_bfd); | |
3573 | for (p = output_bfd->sections; p ; p = p->next) | |
3574 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3575 | && (p->flags & SEC_ALLOC) != 0 | |
3576 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
3577 | ++count; | |
3578 | } | |
3579 | return count; | |
3580 | } | |
3581 | ||
b49e97c9 | 3582 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3583 | appear towards the end. */ |
b49e97c9 | 3584 | |
b34976b6 | 3585 | static bfd_boolean |
d4596a51 | 3586 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3587 | { |
a8028dd0 | 3588 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3589 | struct mips_elf_hash_sort_data hsd; |
3590 | struct mips_got_info *g; | |
b49e97c9 | 3591 | |
d4596a51 RS |
3592 | if (elf_hash_table (info)->dynsymcount == 0) |
3593 | return TRUE; | |
3594 | ||
a8028dd0 | 3595 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3596 | BFD_ASSERT (htab != NULL); |
3597 | ||
a8028dd0 | 3598 | g = htab->got_info; |
d4596a51 RS |
3599 | if (g == NULL) |
3600 | return TRUE; | |
f4416af6 | 3601 | |
b49e97c9 | 3602 | hsd.low = NULL; |
23cc69b6 RS |
3603 | hsd.max_unref_got_dynindx |
3604 | = hsd.min_got_dynindx | |
3605 | = (elf_hash_table (info)->dynsymcount - g->reloc_only_gotno); | |
d4596a51 | 3606 | hsd.max_non_got_dynindx = count_section_dynsyms (abfd, info) + 1; |
b49e97c9 TS |
3607 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) |
3608 | elf_hash_table (info)), | |
3609 | mips_elf_sort_hash_table_f, | |
3610 | &hsd); | |
3611 | ||
3612 | /* There should have been enough room in the symbol table to | |
44c410de | 3613 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 3614 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
d4596a51 RS |
3615 | BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx |
3616 | == elf_hash_table (info)->dynsymcount); | |
3617 | BFD_ASSERT (elf_hash_table (info)->dynsymcount - hsd.min_got_dynindx | |
3618 | == g->global_gotno); | |
b49e97c9 TS |
3619 | |
3620 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3621 | table index in the GOT. */ | |
b49e97c9 TS |
3622 | g->global_gotsym = hsd.low; |
3623 | ||
b34976b6 | 3624 | return TRUE; |
b49e97c9 TS |
3625 | } |
3626 | ||
3627 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3628 | index. Otherwise, assign it the lowest available dynamic | |
3629 | index. */ | |
3630 | ||
b34976b6 | 3631 | static bfd_boolean |
9719ad41 | 3632 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3633 | { |
9719ad41 | 3634 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3635 | |
b49e97c9 TS |
3636 | /* Symbols without dynamic symbol table entries aren't interesting |
3637 | at all. */ | |
3638 | if (h->root.dynindx == -1) | |
b34976b6 | 3639 | return TRUE; |
b49e97c9 | 3640 | |
634835ae | 3641 | switch (h->global_got_area) |
f4416af6 | 3642 | { |
634835ae RS |
3643 | case GGA_NONE: |
3644 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
3645 | break; | |
0f20cc35 | 3646 | |
634835ae | 3647 | case GGA_NORMAL: |
0f20cc35 DJ |
3648 | BFD_ASSERT (h->tls_type == GOT_NORMAL); |
3649 | ||
b49e97c9 TS |
3650 | h->root.dynindx = --hsd->min_got_dynindx; |
3651 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
3652 | break; |
3653 | ||
3654 | case GGA_RELOC_ONLY: | |
3655 | BFD_ASSERT (h->tls_type == GOT_NORMAL); | |
3656 | ||
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 | |
0f20cc35 DJ |
3780 | if (tls_flag != 0) |
3781 | { | |
3782 | entry.gotidx = -1; | |
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 | { | |
3796 | entry.gotidx = g->local_gotno++; | |
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; | |
4010 | else | |
4011 | free (entry); | |
4012 | return 1; | |
4013 | } | |
4014 | ||
4015 | /* If any entries in G->got_entries are for indirect or warning symbols, | |
4016 | replace them with entries for the target symbol. */ | |
4017 | ||
4018 | static bfd_boolean | |
4019 | mips_elf_resolve_final_got_entries (struct mips_got_info *g) | |
4020 | { | |
4021 | bfd_boolean must_recreate; | |
4022 | htab_t new_got; | |
4023 | ||
4024 | must_recreate = FALSE; | |
4025 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &must_recreate); | |
4026 | if (must_recreate) | |
4027 | { | |
4028 | new_got = htab_create (htab_size (g->got_entries), | |
4029 | mips_elf_got_entry_hash, | |
4030 | mips_elf_got_entry_eq, NULL); | |
4031 | htab_traverse (g->got_entries, mips_elf_recreate_got, &new_got); | |
4032 | if (new_got == NULL) | |
4033 | return FALSE; | |
4034 | ||
4035 | /* Each entry in g->got_entries has either been copied to new_got | |
4036 | or freed. Now delete the hash table itself. */ | |
4037 | htab_delete (g->got_entries); | |
4038 | g->got_entries = new_got; | |
4039 | } | |
4040 | return TRUE; | |
4041 | } | |
4042 | ||
634835ae | 4043 | /* A mips_elf_link_hash_traverse callback for which DATA points |
020d7251 RS |
4044 | to the link_info structure. Count the number of type (3) entries |
4045 | in the master GOT. */ | |
33bb52fb RS |
4046 | |
4047 | static int | |
d4596a51 | 4048 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4049 | { |
020d7251 | 4050 | struct bfd_link_info *info; |
6ccf4795 | 4051 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4052 | struct mips_got_info *g; |
4053 | ||
020d7251 | 4054 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4055 | htab = mips_elf_hash_table (info); |
4056 | g = htab->got_info; | |
d4596a51 | 4057 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4058 | { |
020d7251 RS |
4059 | /* Make a final decision about whether the symbol belongs in the |
4060 | local or global GOT. Symbols that bind locally can (and in the | |
4061 | case of forced-local symbols, must) live in the local GOT. | |
4062 | Those that are aren't in the dynamic symbol table must also | |
4063 | live in the local GOT. | |
4064 | ||
4065 | Note that the former condition does not always imply the | |
4066 | latter: symbols do not bind locally if they are completely | |
4067 | undefined. We'll report undefined symbols later if appropriate. */ | |
6ccf4795 RS |
4068 | if (h->root.dynindx == -1 |
4069 | || (h->got_only_for_calls | |
4070 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4071 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
d4596a51 | 4072 | { |
020d7251 RS |
4073 | /* The symbol belongs in the local GOT. We no longer need this |
4074 | entry if it was only used for relocations; those relocations | |
4075 | will be against the null or section symbol instead of H. */ | |
d4596a51 RS |
4076 | if (h->global_got_area != GGA_RELOC_ONLY) |
4077 | g->local_gotno++; | |
4078 | h->global_got_area = GGA_NONE; | |
4079 | } | |
6ccf4795 RS |
4080 | else if (htab->is_vxworks |
4081 | && h->got_only_for_calls | |
4082 | && h->root.plt.offset != MINUS_ONE) | |
4083 | /* On VxWorks, calls can refer directly to the .got.plt entry; | |
4084 | they don't need entries in the regular GOT. .got.plt entries | |
4085 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4086 | h->global_got_area = GGA_NONE; | |
d4596a51 | 4087 | else |
23cc69b6 RS |
4088 | { |
4089 | g->global_gotno++; | |
4090 | if (h->global_got_area == GGA_RELOC_ONLY) | |
4091 | g->reloc_only_gotno++; | |
4092 | } | |
33bb52fb RS |
4093 | } |
4094 | return 1; | |
4095 | } | |
f4416af6 AO |
4096 | \f |
4097 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
4098 | ||
4099 | static hashval_t | |
9719ad41 | 4100 | mips_elf_bfd2got_entry_hash (const void *entry_) |
f4416af6 AO |
4101 | { |
4102 | const struct mips_elf_bfd2got_hash *entry | |
4103 | = (struct mips_elf_bfd2got_hash *)entry_; | |
4104 | ||
4105 | return entry->bfd->id; | |
4106 | } | |
4107 | ||
4108 | /* Check whether two hash entries have the same bfd. */ | |
4109 | ||
4110 | static int | |
9719ad41 | 4111 | mips_elf_bfd2got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
4112 | { |
4113 | const struct mips_elf_bfd2got_hash *e1 | |
4114 | = (const struct mips_elf_bfd2got_hash *)entry1; | |
4115 | const struct mips_elf_bfd2got_hash *e2 | |
4116 | = (const struct mips_elf_bfd2got_hash *)entry2; | |
4117 | ||
4118 | return e1->bfd == e2->bfd; | |
4119 | } | |
4120 | ||
bad36eac | 4121 | /* In a multi-got link, determine the GOT to be used for IBFD. G must |
f4416af6 AO |
4122 | be the master GOT data. */ |
4123 | ||
4124 | static struct mips_got_info * | |
9719ad41 | 4125 | mips_elf_got_for_ibfd (struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4126 | { |
4127 | struct mips_elf_bfd2got_hash e, *p; | |
4128 | ||
4129 | if (! g->bfd2got) | |
4130 | return g; | |
4131 | ||
4132 | e.bfd = ibfd; | |
9719ad41 | 4133 | p = htab_find (g->bfd2got, &e); |
f4416af6 AO |
4134 | return p ? p->g : NULL; |
4135 | } | |
4136 | ||
c224138d RS |
4137 | /* Use BFD2GOT to find ABFD's got entry, creating one if none exists. |
4138 | Return NULL if an error occured. */ | |
f4416af6 | 4139 | |
c224138d RS |
4140 | static struct mips_got_info * |
4141 | mips_elf_get_got_for_bfd (struct htab *bfd2got, bfd *output_bfd, | |
4142 | bfd *input_bfd) | |
f4416af6 | 4143 | { |
f4416af6 | 4144 | struct mips_elf_bfd2got_hash bfdgot_entry, *bfdgot; |
c224138d | 4145 | struct mips_got_info *g; |
f4416af6 | 4146 | void **bfdgotp; |
143d77c5 | 4147 | |
c224138d | 4148 | bfdgot_entry.bfd = input_bfd; |
f4416af6 | 4149 | bfdgotp = htab_find_slot (bfd2got, &bfdgot_entry, INSERT); |
c224138d | 4150 | bfdgot = (struct mips_elf_bfd2got_hash *) *bfdgotp; |
f4416af6 | 4151 | |
c224138d | 4152 | if (bfdgot == NULL) |
f4416af6 | 4153 | { |
c224138d RS |
4154 | bfdgot = ((struct mips_elf_bfd2got_hash *) |
4155 | bfd_alloc (output_bfd, sizeof (struct mips_elf_bfd2got_hash))); | |
f4416af6 | 4156 | if (bfdgot == NULL) |
c224138d | 4157 | return NULL; |
f4416af6 AO |
4158 | |
4159 | *bfdgotp = bfdgot; | |
4160 | ||
c224138d RS |
4161 | g = ((struct mips_got_info *) |
4162 | bfd_alloc (output_bfd, sizeof (struct mips_got_info))); | |
f4416af6 | 4163 | if (g == NULL) |
c224138d RS |
4164 | return NULL; |
4165 | ||
4166 | bfdgot->bfd = input_bfd; | |
4167 | bfdgot->g = g; | |
f4416af6 AO |
4168 | |
4169 | g->global_gotsym = NULL; | |
4170 | g->global_gotno = 0; | |
23cc69b6 | 4171 | g->reloc_only_gotno = 0; |
f4416af6 | 4172 | g->local_gotno = 0; |
c224138d | 4173 | g->page_gotno = 0; |
f4416af6 | 4174 | g->assigned_gotno = -1; |
0f20cc35 DJ |
4175 | g->tls_gotno = 0; |
4176 | g->tls_assigned_gotno = 0; | |
4177 | g->tls_ldm_offset = MINUS_ONE; | |
f4416af6 | 4178 | g->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
9719ad41 | 4179 | mips_elf_multi_got_entry_eq, NULL); |
f4416af6 | 4180 | if (g->got_entries == NULL) |
c224138d RS |
4181 | return NULL; |
4182 | ||
4183 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4184 | mips_got_page_entry_eq, NULL); | |
4185 | if (g->got_page_entries == NULL) | |
4186 | return NULL; | |
f4416af6 AO |
4187 | |
4188 | g->bfd2got = NULL; | |
4189 | g->next = NULL; | |
4190 | } | |
4191 | ||
c224138d RS |
4192 | return bfdgot->g; |
4193 | } | |
4194 | ||
4195 | /* A htab_traverse callback for the entries in the master got. | |
4196 | Create one separate got for each bfd that has entries in the global | |
4197 | got, such that we can tell how many local and global entries each | |
4198 | bfd requires. */ | |
4199 | ||
4200 | static int | |
4201 | mips_elf_make_got_per_bfd (void **entryp, void *p) | |
4202 | { | |
4203 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4204 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
4205 | struct mips_got_info *g; | |
4206 | ||
4207 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
4208 | if (g == NULL) | |
4209 | { | |
4210 | arg->obfd = NULL; | |
4211 | return 0; | |
4212 | } | |
4213 | ||
f4416af6 AO |
4214 | /* Insert the GOT entry in the bfd's got entry hash table. */ |
4215 | entryp = htab_find_slot (g->got_entries, entry, INSERT); | |
4216 | if (*entryp != NULL) | |
4217 | return 1; | |
143d77c5 | 4218 | |
f4416af6 AO |
4219 | *entryp = entry; |
4220 | ||
0f20cc35 DJ |
4221 | if (entry->tls_type) |
4222 | { | |
4223 | if (entry->tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) | |
4224 | g->tls_gotno += 2; | |
4225 | if (entry->tls_type & GOT_TLS_IE) | |
4226 | g->tls_gotno += 1; | |
4227 | } | |
020d7251 | 4228 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) |
f4416af6 AO |
4229 | ++g->local_gotno; |
4230 | else | |
4231 | ++g->global_gotno; | |
4232 | ||
4233 | return 1; | |
4234 | } | |
4235 | ||
c224138d RS |
4236 | /* A htab_traverse callback for the page entries in the master got. |
4237 | Associate each page entry with the bfd's got. */ | |
4238 | ||
4239 | static int | |
4240 | mips_elf_make_got_pages_per_bfd (void **entryp, void *p) | |
4241 | { | |
4242 | struct mips_got_page_entry *entry = (struct mips_got_page_entry *) *entryp; | |
4243 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *) p; | |
4244 | struct mips_got_info *g; | |
4245 | ||
4246 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
4247 | if (g == NULL) | |
4248 | { | |
4249 | arg->obfd = NULL; | |
4250 | return 0; | |
4251 | } | |
4252 | ||
4253 | /* Insert the GOT entry in the bfd's got entry hash table. */ | |
4254 | entryp = htab_find_slot (g->got_page_entries, entry, INSERT); | |
4255 | if (*entryp != NULL) | |
4256 | return 1; | |
4257 | ||
4258 | *entryp = entry; | |
4259 | g->page_gotno += entry->num_pages; | |
4260 | return 1; | |
4261 | } | |
4262 | ||
4263 | /* Consider merging the got described by BFD2GOT with TO, using the | |
4264 | information given by ARG. Return -1 if this would lead to overflow, | |
4265 | 1 if they were merged successfully, and 0 if a merge failed due to | |
4266 | lack of memory. (These values are chosen so that nonnegative return | |
4267 | values can be returned by a htab_traverse callback.) */ | |
4268 | ||
4269 | static int | |
4270 | mips_elf_merge_got_with (struct mips_elf_bfd2got_hash *bfd2got, | |
4271 | struct mips_got_info *to, | |
4272 | struct mips_elf_got_per_bfd_arg *arg) | |
4273 | { | |
4274 | struct mips_got_info *from = bfd2got->g; | |
4275 | unsigned int estimate; | |
4276 | ||
4277 | /* Work out how many page entries we would need for the combined GOT. */ | |
4278 | estimate = arg->max_pages; | |
4279 | if (estimate >= from->page_gotno + to->page_gotno) | |
4280 | estimate = from->page_gotno + to->page_gotno; | |
4281 | ||
e2ece73c | 4282 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4283 | would be needed. */ |
e2ece73c RS |
4284 | estimate += from->local_gotno + to->local_gotno; |
4285 | estimate += from->tls_gotno + to->tls_gotno; | |
4286 | ||
4287 | /* If we're merging with the primary got, we will always have | |
4288 | the full set of global entries. Otherwise estimate those | |
4289 | conservatively as well. */ | |
4290 | if (to == arg->primary) | |
4291 | estimate += arg->global_count; | |
4292 | else | |
4293 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4294 | |
4295 | /* Bail out if the combined GOT might be too big. */ | |
4296 | if (estimate > arg->max_count) | |
4297 | return -1; | |
4298 | ||
4299 | /* Commit to the merge. Record that TO is now the bfd for this got. */ | |
4300 | bfd2got->g = to; | |
4301 | ||
4302 | /* Transfer the bfd's got information from FROM to TO. */ | |
4303 | htab_traverse (from->got_entries, mips_elf_make_got_per_bfd, arg); | |
4304 | if (arg->obfd == NULL) | |
4305 | return 0; | |
4306 | ||
4307 | htab_traverse (from->got_page_entries, mips_elf_make_got_pages_per_bfd, arg); | |
4308 | if (arg->obfd == NULL) | |
4309 | return 0; | |
4310 | ||
4311 | /* We don't have to worry about releasing memory of the actual | |
4312 | got entries, since they're all in the master got_entries hash | |
4313 | table anyway. */ | |
4314 | htab_delete (from->got_entries); | |
4315 | htab_delete (from->got_page_entries); | |
4316 | return 1; | |
4317 | } | |
4318 | ||
f4416af6 AO |
4319 | /* Attempt to merge gots of different input bfds. Try to use as much |
4320 | as possible of the primary got, since it doesn't require explicit | |
4321 | dynamic relocations, but don't use bfds that would reference global | |
4322 | symbols out of the addressable range. Failing the primary got, | |
4323 | attempt to merge with the current got, or finish the current got | |
4324 | and then make make the new got current. */ | |
4325 | ||
4326 | static int | |
9719ad41 | 4327 | mips_elf_merge_gots (void **bfd2got_, void *p) |
f4416af6 AO |
4328 | { |
4329 | struct mips_elf_bfd2got_hash *bfd2got | |
4330 | = (struct mips_elf_bfd2got_hash *)*bfd2got_; | |
4331 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
c224138d RS |
4332 | struct mips_got_info *g; |
4333 | unsigned int estimate; | |
4334 | int result; | |
4335 | ||
4336 | g = bfd2got->g; | |
4337 | ||
4338 | /* Work out the number of page, local and TLS entries. */ | |
4339 | estimate = arg->max_pages; | |
4340 | if (estimate > g->page_gotno) | |
4341 | estimate = g->page_gotno; | |
4342 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4343 | |
4344 | /* We place TLS GOT entries after both locals and globals. The globals | |
4345 | for the primary GOT may overflow the normal GOT size limit, so be | |
4346 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4347 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4348 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4349 | |
c224138d | 4350 | if (estimate <= arg->max_count) |
f4416af6 | 4351 | { |
c224138d RS |
4352 | /* If we don't have a primary GOT, use it as |
4353 | a starting point for the primary GOT. */ | |
4354 | if (!arg->primary) | |
4355 | { | |
4356 | arg->primary = bfd2got->g; | |
4357 | return 1; | |
4358 | } | |
f4416af6 | 4359 | |
c224138d RS |
4360 | /* Try merging with the primary GOT. */ |
4361 | result = mips_elf_merge_got_with (bfd2got, arg->primary, arg); | |
4362 | if (result >= 0) | |
4363 | return result; | |
f4416af6 | 4364 | } |
c224138d | 4365 | |
f4416af6 | 4366 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4367 | if (arg->current) |
f4416af6 | 4368 | { |
c224138d RS |
4369 | result = mips_elf_merge_got_with (bfd2got, arg->current, arg); |
4370 | if (result >= 0) | |
4371 | return result; | |
f4416af6 | 4372 | } |
c224138d | 4373 | |
f4416af6 AO |
4374 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4375 | fits; if it turns out that it doesn't, we'll get relocation | |
4376 | overflows anyway. */ | |
c224138d RS |
4377 | g->next = arg->current; |
4378 | arg->current = g; | |
0f20cc35 DJ |
4379 | |
4380 | return 1; | |
4381 | } | |
4382 | ||
ead49a57 RS |
4383 | /* Set the TLS GOT index for the GOT entry in ENTRYP. ENTRYP's NEXT field |
4384 | is null iff there is just a single GOT. */ | |
0f20cc35 DJ |
4385 | |
4386 | static int | |
4387 | mips_elf_initialize_tls_index (void **entryp, void *p) | |
4388 | { | |
4389 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4390 | struct mips_got_info *g = p; | |
ead49a57 | 4391 | bfd_vma next_index; |
cbf2cba4 | 4392 | unsigned char tls_type; |
0f20cc35 DJ |
4393 | |
4394 | /* We're only interested in TLS symbols. */ | |
4395 | if (entry->tls_type == 0) | |
4396 | return 1; | |
4397 | ||
ead49a57 RS |
4398 | next_index = MIPS_ELF_GOT_SIZE (entry->abfd) * (long) g->tls_assigned_gotno; |
4399 | ||
4400 | if (entry->symndx == -1 && g->next == NULL) | |
0f20cc35 | 4401 | { |
ead49a57 RS |
4402 | /* A type (3) got entry in the single-GOT case. We use the symbol's |
4403 | hash table entry to track its index. */ | |
4404 | if (entry->d.h->tls_type & GOT_TLS_OFFSET_DONE) | |
4405 | return 1; | |
4406 | entry->d.h->tls_type |= GOT_TLS_OFFSET_DONE; | |
4407 | entry->d.h->tls_got_offset = next_index; | |
cbf2cba4 | 4408 | tls_type = entry->d.h->tls_type; |
ead49a57 RS |
4409 | } |
4410 | else | |
4411 | { | |
4412 | if (entry->tls_type & GOT_TLS_LDM) | |
0f20cc35 | 4413 | { |
ead49a57 RS |
4414 | /* There are separate mips_got_entry objects for each input bfd |
4415 | that requires an LDM entry. Make sure that all LDM entries in | |
4416 | a GOT resolve to the same index. */ | |
4417 | if (g->tls_ldm_offset != MINUS_TWO && g->tls_ldm_offset != MINUS_ONE) | |
4005427f | 4418 | { |
ead49a57 | 4419 | entry->gotidx = g->tls_ldm_offset; |
4005427f RS |
4420 | return 1; |
4421 | } | |
ead49a57 | 4422 | g->tls_ldm_offset = next_index; |
0f20cc35 | 4423 | } |
ead49a57 | 4424 | entry->gotidx = next_index; |
cbf2cba4 | 4425 | tls_type = entry->tls_type; |
f4416af6 AO |
4426 | } |
4427 | ||
ead49a57 | 4428 | /* Account for the entries we've just allocated. */ |
cbf2cba4 | 4429 | if (tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) |
0f20cc35 | 4430 | g->tls_assigned_gotno += 2; |
cbf2cba4 | 4431 | if (tls_type & GOT_TLS_IE) |
0f20cc35 DJ |
4432 | g->tls_assigned_gotno += 1; |
4433 | ||
f4416af6 AO |
4434 | return 1; |
4435 | } | |
4436 | ||
4437 | /* If passed a NULL mips_got_info in the argument, set the marker used | |
4438 | to tell whether a global symbol needs a got entry (in the primary | |
4439 | got) to the given VALUE. | |
4440 | ||
4441 | If passed a pointer G to a mips_got_info in the argument (it must | |
4442 | not be the primary GOT), compute the offset from the beginning of | |
4443 | the (primary) GOT section to the entry in G corresponding to the | |
4444 | global symbol. G's assigned_gotno must contain the index of the | |
4445 | first available global GOT entry in G. VALUE must contain the size | |
4446 | of a GOT entry in bytes. For each global GOT entry that requires a | |
4447 | dynamic relocation, NEEDED_RELOCS is incremented, and the symbol is | |
4cc11e76 | 4448 | marked as not eligible for lazy resolution through a function |
f4416af6 AO |
4449 | stub. */ |
4450 | static int | |
9719ad41 | 4451 | mips_elf_set_global_got_offset (void **entryp, void *p) |
f4416af6 AO |
4452 | { |
4453 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
4454 | struct mips_elf_set_global_got_offset_arg *arg | |
4455 | = (struct mips_elf_set_global_got_offset_arg *)p; | |
4456 | struct mips_got_info *g = arg->g; | |
4457 | ||
0f20cc35 DJ |
4458 | if (g && entry->tls_type != GOT_NORMAL) |
4459 | arg->needed_relocs += | |
4460 | mips_tls_got_relocs (arg->info, entry->tls_type, | |
4461 | entry->symndx == -1 ? &entry->d.h->root : NULL); | |
4462 | ||
634835ae RS |
4463 | if (entry->abfd != NULL |
4464 | && entry->symndx == -1 | |
4465 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 AO |
4466 | { |
4467 | if (g) | |
4468 | { | |
4469 | BFD_ASSERT (g->global_gotsym == NULL); | |
4470 | ||
4471 | entry->gotidx = arg->value * (long) g->assigned_gotno++; | |
f4416af6 AO |
4472 | if (arg->info->shared |
4473 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
f5385ebf AM |
4474 | && entry->d.h->root.def_dynamic |
4475 | && !entry->d.h->root.def_regular)) | |
f4416af6 AO |
4476 | ++arg->needed_relocs; |
4477 | } | |
4478 | else | |
634835ae | 4479 | entry->d.h->global_got_area = arg->value; |
f4416af6 AO |
4480 | } |
4481 | ||
4482 | return 1; | |
4483 | } | |
4484 | ||
33bb52fb RS |
4485 | /* A htab_traverse callback for GOT entries for which DATA is the |
4486 | bfd_link_info. Forbid any global symbols from having traditional | |
4487 | lazy-binding stubs. */ | |
4488 | ||
0626d451 | 4489 | static int |
33bb52fb | 4490 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4491 | { |
33bb52fb RS |
4492 | struct bfd_link_info *info; |
4493 | struct mips_elf_link_hash_table *htab; | |
4494 | struct mips_got_entry *entry; | |
0626d451 | 4495 | |
33bb52fb RS |
4496 | entry = (struct mips_got_entry *) *entryp; |
4497 | info = (struct bfd_link_info *) data; | |
4498 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4499 | BFD_ASSERT (htab != NULL); |
4500 | ||
0626d451 RS |
4501 | if (entry->abfd != NULL |
4502 | && entry->symndx == -1 | |
33bb52fb | 4503 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4504 | { |
33bb52fb RS |
4505 | entry->d.h->needs_lazy_stub = FALSE; |
4506 | htab->lazy_stub_count--; | |
f4416af6 | 4507 | } |
143d77c5 | 4508 | |
f4416af6 AO |
4509 | return 1; |
4510 | } | |
4511 | ||
f4416af6 AO |
4512 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4513 | the primary GOT. */ | |
4514 | static bfd_vma | |
9719ad41 | 4515 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
4516 | { |
4517 | if (g->bfd2got == NULL) | |
4518 | return 0; | |
4519 | ||
4520 | g = mips_elf_got_for_ibfd (g, ibfd); | |
4521 | if (! g) | |
4522 | return 0; | |
4523 | ||
4524 | BFD_ASSERT (g->next); | |
4525 | ||
4526 | g = g->next; | |
143d77c5 | 4527 | |
0f20cc35 DJ |
4528 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4529 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4530 | } |
4531 | ||
4532 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4533 | a sequence of GOTs, each one 16-bit addressable. */ | |
4534 | ||
4535 | static bfd_boolean | |
9719ad41 | 4536 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4537 | asection *got, bfd_size_type pages) |
f4416af6 | 4538 | { |
a8028dd0 | 4539 | struct mips_elf_link_hash_table *htab; |
f4416af6 AO |
4540 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
4541 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
a8028dd0 | 4542 | struct mips_got_info *g, *gg; |
33bb52fb RS |
4543 | unsigned int assign, needed_relocs; |
4544 | bfd *dynobj; | |
f4416af6 | 4545 | |
33bb52fb | 4546 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4547 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4548 | BFD_ASSERT (htab != NULL); |
4549 | ||
a8028dd0 | 4550 | g = htab->got_info; |
f4416af6 | 4551 | g->bfd2got = htab_try_create (1, mips_elf_bfd2got_entry_hash, |
9719ad41 | 4552 | mips_elf_bfd2got_entry_eq, NULL); |
f4416af6 AO |
4553 | if (g->bfd2got == NULL) |
4554 | return FALSE; | |
4555 | ||
4556 | got_per_bfd_arg.bfd2got = g->bfd2got; | |
4557 | got_per_bfd_arg.obfd = abfd; | |
4558 | got_per_bfd_arg.info = info; | |
4559 | ||
4560 | /* Count how many GOT entries each input bfd requires, creating a | |
4561 | map from bfd to got info while at that. */ | |
f4416af6 AO |
4562 | htab_traverse (g->got_entries, mips_elf_make_got_per_bfd, &got_per_bfd_arg); |
4563 | if (got_per_bfd_arg.obfd == NULL) | |
4564 | return FALSE; | |
4565 | ||
c224138d RS |
4566 | /* Also count how many page entries each input bfd requires. */ |
4567 | htab_traverse (g->got_page_entries, mips_elf_make_got_pages_per_bfd, | |
4568 | &got_per_bfd_arg); | |
4569 | if (got_per_bfd_arg.obfd == NULL) | |
4570 | return FALSE; | |
4571 | ||
f4416af6 AO |
4572 | got_per_bfd_arg.current = NULL; |
4573 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4574 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4575 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4576 | - htab->reserved_gotno); |
c224138d | 4577 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 DJ |
4578 | /* The number of globals that will be included in the primary GOT. |
4579 | See the calls to mips_elf_set_global_got_offset below for more | |
4580 | information. */ | |
4581 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4582 | |
4583 | /* Try to merge the GOTs of input bfds together, as long as they | |
4584 | don't seem to exceed the maximum GOT size, choosing one of them | |
4585 | to be the primary GOT. */ | |
4586 | htab_traverse (g->bfd2got, mips_elf_merge_gots, &got_per_bfd_arg); | |
4587 | if (got_per_bfd_arg.obfd == NULL) | |
4588 | return FALSE; | |
4589 | ||
0f20cc35 | 4590 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 AO |
4591 | if (got_per_bfd_arg.primary == NULL) |
4592 | { | |
4593 | g->next = (struct mips_got_info *) | |
4594 | bfd_alloc (abfd, sizeof (struct mips_got_info)); | |
4595 | if (g->next == NULL) | |
4596 | return FALSE; | |
4597 | ||
4598 | g->next->global_gotsym = NULL; | |
4599 | g->next->global_gotno = 0; | |
23cc69b6 | 4600 | g->next->reloc_only_gotno = 0; |
f4416af6 | 4601 | g->next->local_gotno = 0; |
c224138d | 4602 | g->next->page_gotno = 0; |
0f20cc35 | 4603 | g->next->tls_gotno = 0; |
f4416af6 | 4604 | g->next->assigned_gotno = 0; |
0f20cc35 DJ |
4605 | g->next->tls_assigned_gotno = 0; |
4606 | g->next->tls_ldm_offset = MINUS_ONE; | |
f4416af6 AO |
4607 | g->next->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
4608 | mips_elf_multi_got_entry_eq, | |
9719ad41 | 4609 | NULL); |
f4416af6 AO |
4610 | if (g->next->got_entries == NULL) |
4611 | return FALSE; | |
c224138d RS |
4612 | g->next->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4613 | mips_got_page_entry_eq, | |
4614 | NULL); | |
4615 | if (g->next->got_page_entries == NULL) | |
4616 | return FALSE; | |
f4416af6 AO |
4617 | g->next->bfd2got = NULL; |
4618 | } | |
4619 | else | |
4620 | g->next = got_per_bfd_arg.primary; | |
4621 | g->next->next = got_per_bfd_arg.current; | |
4622 | ||
4623 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4624 | gg = g; | |
4625 | g = g->next; | |
4626 | ||
4627 | /* Map the output bfd to the primary got. That's what we're going | |
4628 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4629 | didn't mark in check_relocs, and we want a quick way to find it. | |
4630 | We can't just use gg->next because we're going to reverse the | |
4631 | list. */ | |
4632 | { | |
4633 | struct mips_elf_bfd2got_hash *bfdgot; | |
4634 | void **bfdgotp; | |
143d77c5 | 4635 | |
f4416af6 AO |
4636 | bfdgot = (struct mips_elf_bfd2got_hash *)bfd_alloc |
4637 | (abfd, sizeof (struct mips_elf_bfd2got_hash)); | |
4638 | ||
4639 | if (bfdgot == NULL) | |
4640 | return FALSE; | |
4641 | ||
4642 | bfdgot->bfd = abfd; | |
4643 | bfdgot->g = g; | |
4644 | bfdgotp = htab_find_slot (gg->bfd2got, bfdgot, INSERT); | |
4645 | ||
4646 | BFD_ASSERT (*bfdgotp == NULL); | |
4647 | *bfdgotp = bfdgot; | |
4648 | } | |
4649 | ||
634835ae RS |
4650 | /* Every symbol that is referenced in a dynamic relocation must be |
4651 | present in the primary GOT, so arrange for them to appear after | |
4652 | those that are actually referenced. */ | |
23cc69b6 | 4653 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 4654 | g->global_gotno = gg->global_gotno; |
f4416af6 | 4655 | |
f4416af6 | 4656 | set_got_offset_arg.g = NULL; |
634835ae | 4657 | set_got_offset_arg.value = GGA_RELOC_ONLY; |
f4416af6 AO |
4658 | htab_traverse (gg->got_entries, mips_elf_set_global_got_offset, |
4659 | &set_got_offset_arg); | |
634835ae | 4660 | set_got_offset_arg.value = GGA_NORMAL; |
f4416af6 AO |
4661 | htab_traverse (g->got_entries, mips_elf_set_global_got_offset, |
4662 | &set_got_offset_arg); | |
f4416af6 AO |
4663 | |
4664 | /* Now go through the GOTs assigning them offset ranges. | |
4665 | [assigned_gotno, local_gotno[ will be set to the range of local | |
4666 | entries in each GOT. We can then compute the end of a GOT by | |
4667 | adding local_gotno to global_gotno. We reverse the list and make | |
4668 | it circular since then we'll be able to quickly compute the | |
4669 | beginning of a GOT, by computing the end of its predecessor. To | |
4670 | avoid special cases for the primary GOT, while still preserving | |
4671 | assertions that are valid for both single- and multi-got links, | |
4672 | we arrange for the main got struct to have the right number of | |
4673 | global entries, but set its local_gotno such that the initial | |
4674 | offset of the primary GOT is zero. Remember that the primary GOT | |
4675 | will become the last item in the circular linked list, so it | |
4676 | points back to the master GOT. */ | |
4677 | gg->local_gotno = -g->global_gotno; | |
4678 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 4679 | gg->tls_gotno = 0; |
f4416af6 AO |
4680 | assign = 0; |
4681 | gg->next = gg; | |
4682 | ||
4683 | do | |
4684 | { | |
4685 | struct mips_got_info *gn; | |
4686 | ||
861fb55a | 4687 | assign += htab->reserved_gotno; |
f4416af6 | 4688 | g->assigned_gotno = assign; |
c224138d RS |
4689 | g->local_gotno += assign; |
4690 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
4691 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
4692 | ||
ead49a57 RS |
4693 | /* Take g out of the direct list, and push it onto the reversed |
4694 | list that gg points to. g->next is guaranteed to be nonnull after | |
4695 | this operation, as required by mips_elf_initialize_tls_index. */ | |
4696 | gn = g->next; | |
4697 | g->next = gg->next; | |
4698 | gg->next = g; | |
4699 | ||
0f20cc35 DJ |
4700 | /* Set up any TLS entries. We always place the TLS entries after |
4701 | all non-TLS entries. */ | |
4702 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
4703 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
f4416af6 | 4704 | |
ead49a57 | 4705 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 4706 | g = gn; |
0626d451 | 4707 | |
33bb52fb RS |
4708 | /* Forbid global symbols in every non-primary GOT from having |
4709 | lazy-binding stubs. */ | |
0626d451 | 4710 | if (g) |
33bb52fb | 4711 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
4712 | } |
4713 | while (g); | |
4714 | ||
eea6121a | 4715 | got->size = (gg->next->local_gotno |
33bb52fb RS |
4716 | + gg->next->global_gotno |
4717 | + gg->next->tls_gotno) * MIPS_ELF_GOT_SIZE (abfd); | |
4718 | ||
4719 | needed_relocs = 0; | |
4720 | set_got_offset_arg.value = MIPS_ELF_GOT_SIZE (abfd); | |
4721 | set_got_offset_arg.info = info; | |
4722 | for (g = gg->next; g && g->next != gg; g = g->next) | |
4723 | { | |
4724 | unsigned int save_assign; | |
4725 | ||
4726 | /* Assign offsets to global GOT entries. */ | |
4727 | save_assign = g->assigned_gotno; | |
4728 | g->assigned_gotno = g->local_gotno; | |
4729 | set_got_offset_arg.g = g; | |
4730 | set_got_offset_arg.needed_relocs = 0; | |
4731 | htab_traverse (g->got_entries, | |
4732 | mips_elf_set_global_got_offset, | |
4733 | &set_got_offset_arg); | |
4734 | needed_relocs += set_got_offset_arg.needed_relocs; | |
4735 | BFD_ASSERT (g->assigned_gotno - g->local_gotno <= g->global_gotno); | |
4736 | ||
4737 | g->assigned_gotno = save_assign; | |
4738 | if (info->shared) | |
4739 | { | |
4740 | needed_relocs += g->local_gotno - g->assigned_gotno; | |
4741 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno | |
4742 | + g->next->global_gotno | |
4743 | + g->next->tls_gotno | |
861fb55a | 4744 | + htab->reserved_gotno); |
33bb52fb RS |
4745 | } |
4746 | } | |
4747 | ||
4748 | if (needed_relocs) | |
4749 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
4750 | needed_relocs); | |
143d77c5 | 4751 | |
f4416af6 AO |
4752 | return TRUE; |
4753 | } | |
143d77c5 | 4754 | |
b49e97c9 TS |
4755 | \f |
4756 | /* Returns the first relocation of type r_type found, beginning with | |
4757 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
4758 | ||
4759 | static const Elf_Internal_Rela * | |
9719ad41 RS |
4760 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
4761 | const Elf_Internal_Rela *relocation, | |
4762 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 4763 | { |
c000e262 TS |
4764 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
4765 | ||
b49e97c9 TS |
4766 | while (relocation < relend) |
4767 | { | |
c000e262 TS |
4768 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
4769 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
4770 | return relocation; |
4771 | ||
4772 | ++relocation; | |
4773 | } | |
4774 | ||
4775 | /* We didn't find it. */ | |
b49e97c9 TS |
4776 | return NULL; |
4777 | } | |
4778 | ||
020d7251 | 4779 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 4780 | |
b34976b6 | 4781 | static bfd_boolean |
9719ad41 RS |
4782 | mips_elf_local_relocation_p (bfd *input_bfd, |
4783 | const Elf_Internal_Rela *relocation, | |
020d7251 | 4784 | asection **local_sections) |
b49e97c9 TS |
4785 | { |
4786 | unsigned long r_symndx; | |
4787 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
4788 | size_t extsymoff; |
4789 | ||
4790 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4791 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4792 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
4793 | ||
4794 | if (r_symndx < extsymoff) | |
b34976b6 | 4795 | return TRUE; |
b49e97c9 | 4796 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 4797 | return TRUE; |
b49e97c9 | 4798 | |
b34976b6 | 4799 | return FALSE; |
b49e97c9 TS |
4800 | } |
4801 | \f | |
4802 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4803 | ||
a7ebbfdf | 4804 | bfd_vma |
9719ad41 | 4805 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4806 | { |
4807 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4808 | /* VALUE is negative. */ | |
4809 | value |= ((bfd_vma) - 1) << bits; | |
4810 | ||
4811 | return value; | |
4812 | } | |
4813 | ||
4814 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4815 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4816 | BITS. */ |
4817 | ||
b34976b6 | 4818 | static bfd_boolean |
9719ad41 | 4819 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4820 | { |
4821 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4822 | ||
4823 | if (svalue > (1 << (bits - 1)) - 1) | |
4824 | /* The value is too big. */ | |
b34976b6 | 4825 | return TRUE; |
b49e97c9 TS |
4826 | else if (svalue < -(1 << (bits - 1))) |
4827 | /* The value is too small. */ | |
b34976b6 | 4828 | return TRUE; |
b49e97c9 TS |
4829 | |
4830 | /* All is well. */ | |
b34976b6 | 4831 | return FALSE; |
b49e97c9 TS |
4832 | } |
4833 | ||
4834 | /* Calculate the %high function. */ | |
4835 | ||
4836 | static bfd_vma | |
9719ad41 | 4837 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4838 | { |
4839 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4840 | } | |
4841 | ||
4842 | /* Calculate the %higher function. */ | |
4843 | ||
4844 | static bfd_vma | |
9719ad41 | 4845 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4846 | { |
4847 | #ifdef BFD64 | |
4848 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4849 | #else | |
4850 | abort (); | |
c5ae1840 | 4851 | return MINUS_ONE; |
b49e97c9 TS |
4852 | #endif |
4853 | } | |
4854 | ||
4855 | /* Calculate the %highest function. */ | |
4856 | ||
4857 | static bfd_vma | |
9719ad41 | 4858 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4859 | { |
4860 | #ifdef BFD64 | |
b15e6682 | 4861 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4862 | #else |
4863 | abort (); | |
c5ae1840 | 4864 | return MINUS_ONE; |
b49e97c9 TS |
4865 | #endif |
4866 | } | |
4867 | \f | |
4868 | /* Create the .compact_rel section. */ | |
4869 | ||
b34976b6 | 4870 | static bfd_boolean |
9719ad41 RS |
4871 | mips_elf_create_compact_rel_section |
4872 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4873 | { |
4874 | flagword flags; | |
4875 | register asection *s; | |
4876 | ||
3d4d4302 | 4877 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
4878 | { |
4879 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4880 | | SEC_READONLY); | |
4881 | ||
3d4d4302 | 4882 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4883 | if (s == NULL |
b49e97c9 TS |
4884 | || ! bfd_set_section_alignment (abfd, s, |
4885 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4886 | return FALSE; |
b49e97c9 | 4887 | |
eea6121a | 4888 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4889 | } |
4890 | ||
b34976b6 | 4891 | return TRUE; |
b49e97c9 TS |
4892 | } |
4893 | ||
4894 | /* Create the .got section to hold the global offset table. */ | |
4895 | ||
b34976b6 | 4896 | static bfd_boolean |
23cc69b6 | 4897 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
4898 | { |
4899 | flagword flags; | |
4900 | register asection *s; | |
4901 | struct elf_link_hash_entry *h; | |
14a793b2 | 4902 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
4903 | struct mips_got_info *g; |
4904 | bfd_size_type amt; | |
0a44bf69 RS |
4905 | struct mips_elf_link_hash_table *htab; |
4906 | ||
4907 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 4908 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
4909 | |
4910 | /* This function may be called more than once. */ | |
23cc69b6 RS |
4911 | if (htab->sgot) |
4912 | return TRUE; | |
b49e97c9 TS |
4913 | |
4914 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4915 | | SEC_LINKER_CREATED); | |
4916 | ||
72b4917c TS |
4917 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4918 | in the function stub generation and in the linker script. */ | |
87e0a731 | 4919 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 4920 | if (s == NULL |
72b4917c | 4921 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4922 | return FALSE; |
a8028dd0 | 4923 | htab->sgot = s; |
b49e97c9 TS |
4924 | |
4925 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4926 | linker script because we don't want to define the symbol if we | |
4927 | are not creating a global offset table. */ | |
14a793b2 | 4928 | bh = NULL; |
b49e97c9 TS |
4929 | if (! (_bfd_generic_link_add_one_symbol |
4930 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4931 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4932 | return FALSE; |
14a793b2 AM |
4933 | |
4934 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4935 | h->non_elf = 0; |
4936 | h->def_regular = 1; | |
b49e97c9 | 4937 | h->type = STT_OBJECT; |
d329bcd1 | 4938 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4939 | |
4940 | if (info->shared | |
c152c796 | 4941 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4942 | return FALSE; |
b49e97c9 | 4943 | |
b49e97c9 | 4944 | amt = sizeof (struct mips_got_info); |
9719ad41 | 4945 | g = bfd_alloc (abfd, amt); |
b49e97c9 | 4946 | if (g == NULL) |
b34976b6 | 4947 | return FALSE; |
b49e97c9 | 4948 | g->global_gotsym = NULL; |
e3d54347 | 4949 | g->global_gotno = 0; |
23cc69b6 | 4950 | g->reloc_only_gotno = 0; |
0f20cc35 | 4951 | g->tls_gotno = 0; |
861fb55a | 4952 | g->local_gotno = 0; |
c224138d | 4953 | g->page_gotno = 0; |
861fb55a | 4954 | g->assigned_gotno = 0; |
f4416af6 AO |
4955 | g->bfd2got = NULL; |
4956 | g->next = NULL; | |
0f20cc35 | 4957 | g->tls_ldm_offset = MINUS_ONE; |
b15e6682 | 4958 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
9719ad41 | 4959 | mips_elf_got_entry_eq, NULL); |
b15e6682 AO |
4960 | if (g->got_entries == NULL) |
4961 | return FALSE; | |
c224138d RS |
4962 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4963 | mips_got_page_entry_eq, NULL); | |
4964 | if (g->got_page_entries == NULL) | |
4965 | return FALSE; | |
a8028dd0 | 4966 | htab->got_info = g; |
f0abc2a1 | 4967 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
4968 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4969 | ||
861fb55a | 4970 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
4971 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
4972 | SEC_ALLOC | SEC_LOAD | |
4973 | | SEC_HAS_CONTENTS | |
4974 | | SEC_IN_MEMORY | |
4975 | | SEC_LINKER_CREATED); | |
861fb55a DJ |
4976 | if (s == NULL) |
4977 | return FALSE; | |
4978 | htab->sgotplt = s; | |
0a44bf69 | 4979 | |
b34976b6 | 4980 | return TRUE; |
b49e97c9 | 4981 | } |
b49e97c9 | 4982 | \f |
0a44bf69 RS |
4983 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4984 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4985 | shared objects; they are not used in executables. */ | |
4986 | ||
4987 | static bfd_boolean | |
4988 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4989 | { | |
4990 | return (mips_elf_hash_table (info)->is_vxworks | |
4991 | && info->shared | |
4992 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4993 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4994 | } | |
861fb55a DJ |
4995 | |
4996 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
4997 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
4998 | which determines whether the destination function ever requires a | |
4999 | stub. */ | |
5000 | ||
5001 | static bfd_boolean | |
8f0c309a CLT |
5002 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
5003 | bfd_boolean target_is_16_bit_code_p) | |
861fb55a DJ |
5004 | { |
5005 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
5006 | where the onus is on the compiler or programmer to perform any | |
5007 | necessary initialization of $25. Sometimes such initialization | |
5008 | is unnecessary; for example, -mno-shared functions do not use | |
5009 | the incoming value of $25, and may therefore be called directly. */ | |
5010 | if (PIC_OBJECT_P (input_bfd)) | |
5011 | return FALSE; | |
5012 | ||
5013 | switch (r_type) | |
5014 | { | |
5015 | case R_MIPS_26: | |
5016 | case R_MIPS_PC16: | |
df58fc94 RS |
5017 | case R_MICROMIPS_26_S1: |
5018 | case R_MICROMIPS_PC7_S1: | |
5019 | case R_MICROMIPS_PC10_S1: | |
5020 | case R_MICROMIPS_PC16_S1: | |
5021 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
5022 | return TRUE; |
5023 | ||
8f0c309a CLT |
5024 | case R_MIPS16_26: |
5025 | return !target_is_16_bit_code_p; | |
5026 | ||
861fb55a DJ |
5027 | default: |
5028 | return FALSE; | |
5029 | } | |
5030 | } | |
0a44bf69 | 5031 | \f |
b49e97c9 TS |
5032 | /* Calculate the value produced by the RELOCATION (which comes from |
5033 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5034 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5035 | ||
5036 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 5037 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 5038 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
5039 | |
5040 | This function returns bfd_reloc_continue if the caller need take no | |
5041 | further action regarding this relocation, bfd_reloc_notsupported if | |
5042 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5043 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5044 | ||
5045 | static bfd_reloc_status_type | |
9719ad41 RS |
5046 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
5047 | asection *input_section, | |
5048 | struct bfd_link_info *info, | |
5049 | const Elf_Internal_Rela *relocation, | |
5050 | bfd_vma addend, reloc_howto_type *howto, | |
5051 | Elf_Internal_Sym *local_syms, | |
5052 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 CF |
5053 | const char **namep, |
5054 | bfd_boolean *cross_mode_jump_p, | |
9719ad41 | 5055 | bfd_boolean save_addend) |
b49e97c9 TS |
5056 | { |
5057 | /* The eventual value we will return. */ | |
5058 | bfd_vma value; | |
5059 | /* The address of the symbol against which the relocation is | |
5060 | occurring. */ | |
5061 | bfd_vma symbol = 0; | |
5062 | /* The final GP value to be used for the relocatable, executable, or | |
5063 | shared object file being produced. */ | |
0a61c8c2 | 5064 | bfd_vma gp; |
b49e97c9 TS |
5065 | /* The place (section offset or address) of the storage unit being |
5066 | relocated. */ | |
5067 | bfd_vma p; | |
5068 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 5069 | bfd_vma gp0; |
b49e97c9 TS |
5070 | /* The offset into the global offset table at which the address of |
5071 | the relocation entry symbol, adjusted by the addend, resides | |
5072 | during execution. */ | |
5073 | bfd_vma g = MINUS_ONE; | |
5074 | /* The section in which the symbol referenced by the relocation is | |
5075 | located. */ | |
5076 | asection *sec = NULL; | |
5077 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5078 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5079 | symbol. */ |
b34976b6 AM |
5080 | bfd_boolean local_p, was_local_p; |
5081 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
5082 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
5083 | /* TRUE if the symbol referred to by this relocation is |
5084 | "__gnu_local_gp". */ | |
5085 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
5086 | Elf_Internal_Shdr *symtab_hdr; |
5087 | size_t extsymoff; | |
5088 | unsigned long r_symndx; | |
5089 | int r_type; | |
b34976b6 | 5090 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5091 | relocation value. */ |
b34976b6 AM |
5092 | bfd_boolean overflowed_p; |
5093 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
5094 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
df58fc94 | 5095 | bfd_boolean target_is_micromips_code_p = FALSE; |
0a44bf69 RS |
5096 | struct mips_elf_link_hash_table *htab; |
5097 | bfd *dynobj; | |
5098 | ||
5099 | dynobj = elf_hash_table (info)->dynobj; | |
5100 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5101 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5102 | |
5103 | /* Parse the relocation. */ | |
5104 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5105 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5106 | p = (input_section->output_section->vma | |
5107 | + input_section->output_offset | |
5108 | + relocation->r_offset); | |
5109 | ||
5110 | /* Assume that there will be no overflow. */ | |
b34976b6 | 5111 | overflowed_p = FALSE; |
b49e97c9 TS |
5112 | |
5113 | /* Figure out whether or not the symbol is local, and get the offset | |
5114 | used in the array of hash table entries. */ | |
5115 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5116 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5117 | local_sections); |
bce03d3d | 5118 | was_local_p = local_p; |
b49e97c9 TS |
5119 | if (! elf_bad_symtab (input_bfd)) |
5120 | extsymoff = symtab_hdr->sh_info; | |
5121 | else | |
5122 | { | |
5123 | /* The symbol table does not follow the rule that local symbols | |
5124 | must come before globals. */ | |
5125 | extsymoff = 0; | |
5126 | } | |
5127 | ||
5128 | /* Figure out the value of the symbol. */ | |
5129 | if (local_p) | |
5130 | { | |
5131 | Elf_Internal_Sym *sym; | |
5132 | ||
5133 | sym = local_syms + r_symndx; | |
5134 | sec = local_sections[r_symndx]; | |
5135 | ||
5136 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
5137 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
5138 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 5139 | symbol += sym->st_value; |
d4df96e6 L |
5140 | if ((sec->flags & SEC_MERGE) |
5141 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
5142 | { | |
5143 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5144 | addend -= symbol; | |
5145 | addend += sec->output_section->vma + sec->output_offset; | |
5146 | } | |
b49e97c9 | 5147 | |
df58fc94 RS |
5148 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5149 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5150 | ++symbol; |
5151 | ||
5152 | /* Record the name of this symbol, for our caller. */ | |
5153 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5154 | symtab_hdr->sh_link, | |
5155 | sym->st_name); | |
5156 | if (*namep == '\0') | |
5157 | *namep = bfd_section_name (input_bfd, sec); | |
5158 | ||
30c09090 | 5159 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
df58fc94 | 5160 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); |
b49e97c9 TS |
5161 | } |
5162 | else | |
5163 | { | |
560e09e9 NC |
5164 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5165 | ||
b49e97c9 TS |
5166 | /* For global symbols we look up the symbol in the hash-table. */ |
5167 | h = ((struct mips_elf_link_hash_entry *) | |
5168 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5169 | /* Find the real hash-table entry for this symbol. */ | |
5170 | while (h->root.root.type == bfd_link_hash_indirect | |
5171 | || h->root.root.type == bfd_link_hash_warning) | |
5172 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5173 | ||
5174 | /* Record the name of this symbol, for our caller. */ | |
5175 | *namep = h->root.root.root.string; | |
5176 | ||
5177 | /* See if this is the special _gp_disp symbol. Note that such a | |
5178 | symbol must always be a global symbol. */ | |
560e09e9 | 5179 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5180 | && ! NEWABI_P (input_bfd)) |
5181 | { | |
5182 | /* Relocations against _gp_disp are permitted only with | |
5183 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5184 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5185 | return bfd_reloc_notsupported; |
5186 | ||
b34976b6 | 5187 | gp_disp_p = TRUE; |
b49e97c9 | 5188 | } |
bbe506e8 TS |
5189 | /* See if this is the special _gp symbol. Note that such a |
5190 | symbol must always be a global symbol. */ | |
5191 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
5192 | gnu_local_gp_p = TRUE; | |
5193 | ||
5194 | ||
b49e97c9 TS |
5195 | /* If this symbol is defined, calculate its address. Note that |
5196 | _gp_disp is a magic symbol, always implicitly defined by the | |
5197 | linker, so it's inappropriate to check to see whether or not | |
5198 | its defined. */ | |
5199 | else if ((h->root.root.type == bfd_link_hash_defined | |
5200 | || h->root.root.type == bfd_link_hash_defweak) | |
5201 | && h->root.root.u.def.section) | |
5202 | { | |
5203 | sec = h->root.root.u.def.section; | |
5204 | if (sec->output_section) | |
5205 | symbol = (h->root.root.u.def.value | |
5206 | + sec->output_section->vma | |
5207 | + sec->output_offset); | |
5208 | else | |
5209 | symbol = h->root.root.u.def.value; | |
5210 | } | |
5211 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5212 | /* We allow relocations against undefined weak symbols, giving | |
5213 | it the value zero, so that you can undefined weak functions | |
5214 | and check to see if they exist by looking at their | |
5215 | addresses. */ | |
5216 | symbol = 0; | |
59c2e50f | 5217 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5218 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5219 | symbol = 0; | |
a4d0f181 TS |
5220 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5221 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5222 | { |
5223 | /* If this is a dynamic link, we should have created a | |
5224 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
5225 | in in _bfd_mips_elf_create_dynamic_sections. | |
5226 | Otherwise, we should define the symbol with a value of 0. | |
5227 | FIXME: It should probably get into the symbol table | |
5228 | somehow as well. */ | |
5229 | BFD_ASSERT (! info->shared); | |
5230 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
5231 | symbol = 0; | |
5232 | } | |
5e2b0d47 NC |
5233 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5234 | { | |
5235 | /* This is an optional symbol - an Irix specific extension to the | |
5236 | ELF spec. Ignore it for now. | |
5237 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5238 | than simply ignoring them, but we do not handle this for now. | |
5239 | For information see the "64-bit ELF Object File Specification" | |
5240 | which is available from here: | |
5241 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5242 | symbol = 0; | |
5243 | } | |
e7e2196d MR |
5244 | else if ((*info->callbacks->undefined_symbol) |
5245 | (info, h->root.root.root.string, input_bfd, | |
5246 | input_section, relocation->r_offset, | |
5247 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) | |
5248 | || ELF_ST_VISIBILITY (h->root.other))) | |
5249 | { | |
5250 | return bfd_reloc_undefined; | |
5251 | } | |
b49e97c9 TS |
5252 | else |
5253 | { | |
e7e2196d | 5254 | return bfd_reloc_notsupported; |
b49e97c9 TS |
5255 | } |
5256 | ||
30c09090 | 5257 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
df58fc94 RS |
5258 | /* If the output section is the PLT section, |
5259 | then the target is not microMIPS. */ | |
5260 | target_is_micromips_code_p = (htab->splt != sec | |
5261 | && ELF_ST_IS_MICROMIPS (h->root.other)); | |
b49e97c9 TS |
5262 | } |
5263 | ||
738e5348 RS |
5264 | /* If this is a reference to a 16-bit function with a stub, we need |
5265 | to redirect the relocation to the stub unless: | |
5266 | ||
5267 | (a) the relocation is for a MIPS16 JAL; | |
5268 | ||
5269 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5270 | non-MIPS16 uses of the GOT slot; or | |
5271 | ||
5272 | (c) the section allows direct references to MIPS16 functions. */ | |
5273 | if (r_type != R_MIPS16_26 | |
5274 | && !info->relocatable | |
5275 | && ((h != NULL | |
5276 | && h->fn_stub != NULL | |
5277 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 TS |
5278 | || (local_p |
5279 | && elf_tdata (input_bfd)->local_stubs != NULL | |
b49e97c9 | 5280 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
738e5348 | 5281 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5282 | { |
5283 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5284 | have already noticed that we were going to need the | |
5285 | stub. */ | |
5286 | if (local_p) | |
8f0c309a CLT |
5287 | { |
5288 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
5289 | value = 0; | |
5290 | } | |
b49e97c9 TS |
5291 | else |
5292 | { | |
5293 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5294 | if (h->la25_stub) |
5295 | { | |
5296 | /* If a LA25 header for the stub itself exists, point to the | |
5297 | prepended LUI/ADDIU sequence. */ | |
5298 | sec = h->la25_stub->stub_section; | |
5299 | value = h->la25_stub->offset; | |
5300 | } | |
5301 | else | |
5302 | { | |
5303 | sec = h->fn_stub; | |
5304 | value = 0; | |
5305 | } | |
b49e97c9 TS |
5306 | } |
5307 | ||
8f0c309a | 5308 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 TS |
5309 | /* The target is 16-bit, but the stub isn't. */ |
5310 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
5311 | } |
5312 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
5313 | need to redirect the call to the stub. Note that we specifically |
5314 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
5315 | use an indirect stub instead. */ | |
1049f94e | 5316 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 5317 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 TS |
5318 | || (local_p |
5319 | && elf_tdata (input_bfd)->local_call_stubs != NULL | |
5320 | && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
5321 | && !target_is_16_bit_code_p) |
5322 | { | |
b9d58d71 TS |
5323 | if (local_p) |
5324 | sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx]; | |
5325 | else | |
b49e97c9 | 5326 | { |
b9d58d71 TS |
5327 | /* If both call_stub and call_fp_stub are defined, we can figure |
5328 | out which one to use by checking which one appears in the input | |
5329 | file. */ | |
5330 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5331 | { |
b9d58d71 | 5332 | asection *o; |
68ffbac6 | 5333 | |
b9d58d71 TS |
5334 | sec = NULL; |
5335 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5336 | { |
b9d58d71 TS |
5337 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
5338 | { | |
5339 | sec = h->call_fp_stub; | |
5340 | break; | |
5341 | } | |
b49e97c9 | 5342 | } |
b9d58d71 TS |
5343 | if (sec == NULL) |
5344 | sec = h->call_stub; | |
b49e97c9 | 5345 | } |
b9d58d71 | 5346 | else if (h->call_stub != NULL) |
b49e97c9 | 5347 | sec = h->call_stub; |
b9d58d71 TS |
5348 | else |
5349 | sec = h->call_fp_stub; | |
5350 | } | |
b49e97c9 | 5351 | |
eea6121a | 5352 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5353 | symbol = sec->output_section->vma + sec->output_offset; |
5354 | } | |
861fb55a DJ |
5355 | /* If this is a direct call to a PIC function, redirect to the |
5356 | non-PIC stub. */ | |
5357 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5358 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5359 | target_is_16_bit_code_p)) | |
861fb55a DJ |
5360 | symbol = (h->la25_stub->stub_section->output_section->vma |
5361 | + h->la25_stub->stub_section->output_offset | |
5362 | + h->la25_stub->offset); | |
b49e97c9 | 5363 | |
df58fc94 RS |
5364 | /* Make sure MIPS16 and microMIPS are not used together. */ |
5365 | if ((r_type == R_MIPS16_26 && target_is_micromips_code_p) | |
5366 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) | |
5367 | { | |
5368 | (*_bfd_error_handler) | |
5369 | (_("MIPS16 and microMIPS functions cannot call each other")); | |
5370 | return bfd_reloc_notsupported; | |
5371 | } | |
5372 | ||
b49e97c9 | 5373 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5374 | mode change. However, we can ignore calls to undefined weak symbols, |
5375 | which should never be executed at runtime. This exception is important | |
5376 | because the assembly writer may have "known" that any definition of the | |
5377 | symbol would be 16-bit code, and that direct jumps were therefore | |
5378 | acceptable. */ | |
5379 | *cross_mode_jump_p = (!info->relocatable | |
5380 | && !(h && h->root.root.type == bfd_link_hash_undefweak) | |
5381 | && ((r_type == R_MIPS16_26 && !target_is_16_bit_code_p) | |
5382 | || (r_type == R_MICROMIPS_26_S1 | |
5383 | && !target_is_micromips_code_p) | |
5384 | || ((r_type == R_MIPS_26 || r_type == R_MIPS_JALR) | |
5385 | && (target_is_16_bit_code_p | |
5386 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5387 | |
9f1a453e MR |
5388 | local_p = (h == NULL |
5389 | || (h->got_only_for_calls | |
5390 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
5391 | : SYMBOL_REFERENCES_LOCAL (info, &h->root))); | |
b49e97c9 | 5392 | |
0a61c8c2 RS |
5393 | gp0 = _bfd_get_gp_value (input_bfd); |
5394 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5395 | if (htab->got_info) |
a8028dd0 | 5396 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5397 | |
5398 | if (gnu_local_gp_p) | |
5399 | symbol = gp; | |
5400 | ||
df58fc94 RS |
5401 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5402 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5403 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5404 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5405 | { |
df58fc94 RS |
5406 | r_type = (micromips_reloc_p (r_type) |
5407 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5408 | addend = 0; |
5409 | } | |
5410 | ||
e77760d2 | 5411 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5412 | to need it, get it now. */ |
b49e97c9 TS |
5413 | switch (r_type) |
5414 | { | |
738e5348 RS |
5415 | case R_MIPS16_CALL16: |
5416 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5417 | case R_MIPS_CALL16: |
5418 | case R_MIPS_GOT16: | |
5419 | case R_MIPS_GOT_DISP: | |
5420 | case R_MIPS_GOT_HI16: | |
5421 | case R_MIPS_CALL_HI16: | |
5422 | case R_MIPS_GOT_LO16: | |
5423 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5424 | case R_MICROMIPS_CALL16: |
5425 | case R_MICROMIPS_GOT16: | |
5426 | case R_MICROMIPS_GOT_DISP: | |
5427 | case R_MICROMIPS_GOT_HI16: | |
5428 | case R_MICROMIPS_CALL_HI16: | |
5429 | case R_MICROMIPS_GOT_LO16: | |
5430 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5431 | case R_MIPS_TLS_GD: |
5432 | case R_MIPS_TLS_GOTTPREL: | |
5433 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5434 | case R_MIPS16_TLS_GD: |
5435 | case R_MIPS16_TLS_GOTTPREL: | |
5436 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5437 | case R_MICROMIPS_TLS_GD: |
5438 | case R_MICROMIPS_TLS_GOTTPREL: | |
5439 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5440 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5441 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5442 | { |
0a44bf69 | 5443 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5444 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5445 | if (g == MINUS_ONE) |
5446 | return bfd_reloc_outofrange; | |
5447 | } | |
5448 | else if (!local_p) | |
b49e97c9 | 5449 | { |
0a44bf69 RS |
5450 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5451 | entry, which is initialized to point at the PLT stub. */ | |
5452 | if (htab->is_vxworks | |
df58fc94 RS |
5453 | && (call_hi16_reloc_p (r_type) |
5454 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5455 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5456 | { |
5457 | BFD_ASSERT (addend == 0); | |
5458 | BFD_ASSERT (h->root.needs_plt); | |
5459 | g = mips_elf_gotplt_index (info, &h->root); | |
5460 | } | |
5461 | else | |
b49e97c9 | 5462 | { |
020d7251 | 5463 | BFD_ASSERT (addend == 0); |
0a44bf69 RS |
5464 | g = mips_elf_global_got_index (dynobj, input_bfd, |
5465 | &h->root, r_type, info); | |
5466 | if (h->tls_type == GOT_NORMAL | |
020d7251 RS |
5467 | && !elf_hash_table (info)->dynamic_sections_created) |
5468 | /* This is a static link. We must initialize the GOT entry. */ | |
a8028dd0 | 5469 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->sgot->contents + g); |
b49e97c9 TS |
5470 | } |
5471 | } | |
0a44bf69 | 5472 | else if (!htab->is_vxworks |
738e5348 | 5473 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5474 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5475 | break; |
5476 | else | |
5477 | { | |
5c18022e | 5478 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5479 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5480 | if (g == MINUS_ONE) |
5481 | return bfd_reloc_outofrange; | |
5482 | } | |
5483 | ||
5484 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5485 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5486 | break; |
b49e97c9 TS |
5487 | } |
5488 | ||
0a44bf69 RS |
5489 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5490 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
5491 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
5492 | { | |
5493 | Elf_Internal_Rela outrel; | |
5494 | bfd_byte *loc; | |
5495 | asection *s; | |
5496 | ||
5497 | s = mips_elf_rel_dyn_section (info, FALSE); | |
5498 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
5499 | ||
5500 | outrel.r_offset = (input_section->output_section->vma | |
5501 | + input_section->output_offset | |
5502 | + relocation->r_offset); | |
5503 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
5504 | outrel.r_addend = addend; | |
5505 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
5506 | |
5507 | /* If we've written this relocation for a readonly section, | |
5508 | we need to set DF_TEXTREL again, so that we do not delete the | |
5509 | DT_TEXTREL tag. */ | |
5510 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5511 | info->flags |= DF_TEXTREL; | |
5512 | ||
0a44bf69 RS |
5513 | *valuep = 0; |
5514 | return bfd_reloc_ok; | |
5515 | } | |
5516 | ||
b49e97c9 TS |
5517 | /* Figure out what kind of relocation is being performed. */ |
5518 | switch (r_type) | |
5519 | { | |
5520 | case R_MIPS_NONE: | |
5521 | return bfd_reloc_continue; | |
5522 | ||
5523 | case R_MIPS_16: | |
a7ebbfdf | 5524 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
5525 | overflowed_p = mips_elf_overflow_p (value, 16); |
5526 | break; | |
5527 | ||
5528 | case R_MIPS_32: | |
5529 | case R_MIPS_REL32: | |
5530 | case R_MIPS_64: | |
5531 | if ((info->shared | |
861fb55a | 5532 | || (htab->root.dynamic_sections_created |
b49e97c9 | 5533 | && h != NULL |
f5385ebf | 5534 | && h->root.def_dynamic |
861fb55a DJ |
5535 | && !h->root.def_regular |
5536 | && !h->has_static_relocs)) | |
cf35638d | 5537 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
5538 | && (h == NULL |
5539 | || h->root.root.type != bfd_link_hash_undefweak | |
5540 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
5541 | && (input_section->flags & SEC_ALLOC) != 0) |
5542 | { | |
861fb55a | 5543 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
5544 | where the symbol will end up. So, we create a relocation |
5545 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
5546 | linker. We must do the same for executable references to |
5547 | shared library symbols, unless we've decided to use copy | |
5548 | relocs or PLTs instead. */ | |
b49e97c9 TS |
5549 | value = addend; |
5550 | if (!mips_elf_create_dynamic_relocation (abfd, | |
5551 | info, | |
5552 | relocation, | |
5553 | h, | |
5554 | sec, | |
5555 | symbol, | |
5556 | &value, | |
5557 | input_section)) | |
5558 | return bfd_reloc_undefined; | |
5559 | } | |
5560 | else | |
5561 | { | |
5562 | if (r_type != R_MIPS_REL32) | |
5563 | value = symbol + addend; | |
5564 | else | |
5565 | value = addend; | |
5566 | } | |
5567 | value &= howto->dst_mask; | |
092dcd75 CD |
5568 | break; |
5569 | ||
5570 | case R_MIPS_PC32: | |
5571 | value = symbol + addend - p; | |
5572 | value &= howto->dst_mask; | |
b49e97c9 TS |
5573 | break; |
5574 | ||
b49e97c9 TS |
5575 | case R_MIPS16_26: |
5576 | /* The calculation for R_MIPS16_26 is just the same as for an | |
5577 | R_MIPS_26. It's only the storage of the relocated field into | |
5578 | the output file that's different. That's handled in | |
5579 | mips_elf_perform_relocation. So, we just fall through to the | |
5580 | R_MIPS_26 case here. */ | |
5581 | case R_MIPS_26: | |
df58fc94 RS |
5582 | case R_MICROMIPS_26_S1: |
5583 | { | |
5584 | unsigned int shift; | |
5585 | ||
5586 | /* Make sure the target of JALX is word-aligned. Bit 0 must be | |
5587 | the correct ISA mode selector and bit 1 must be 0. */ | |
5588 | if (*cross_mode_jump_p && (symbol & 3) != (r_type == R_MIPS_26)) | |
5589 | return bfd_reloc_outofrange; | |
5590 | ||
5591 | /* Shift is 2, unusually, for microMIPS JALX. */ | |
5592 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
5593 | ||
5594 | if (was_local_p) | |
5595 | value = addend | ((p + 4) & (0xfc000000 << shift)); | |
5596 | else | |
5597 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); | |
5598 | value = (value + symbol) >> shift; | |
5599 | if (!was_local_p && h->root.root.type != bfd_link_hash_undefweak) | |
5600 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); | |
5601 | value &= howto->dst_mask; | |
5602 | } | |
b49e97c9 TS |
5603 | break; |
5604 | ||
0f20cc35 | 5605 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 5606 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 5607 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
5608 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
5609 | & howto->dst_mask); | |
5610 | break; | |
5611 | ||
5612 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
5613 | case R_MIPS_TLS_DTPREL32: |
5614 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 5615 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 5616 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
5617 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
5618 | break; | |
5619 | ||
5620 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 5621 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 5622 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
5623 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
5624 | & howto->dst_mask); | |
5625 | break; | |
5626 | ||
5627 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
5628 | case R_MIPS_TLS_TPREL32: |
5629 | case R_MIPS_TLS_TPREL64: | |
5630 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 5631 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
5632 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
5633 | break; | |
5634 | ||
b49e97c9 | 5635 | case R_MIPS_HI16: |
d6f16593 | 5636 | case R_MIPS16_HI16: |
df58fc94 | 5637 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
5638 | if (!gp_disp_p) |
5639 | { | |
5640 | value = mips_elf_high (addend + symbol); | |
5641 | value &= howto->dst_mask; | |
5642 | } | |
5643 | else | |
5644 | { | |
d6f16593 MR |
5645 | /* For MIPS16 ABI code we generate this sequence |
5646 | 0: li $v0,%hi(_gp_disp) | |
5647 | 4: addiupc $v1,%lo(_gp_disp) | |
5648 | 8: sll $v0,16 | |
5649 | 12: addu $v0,$v1 | |
5650 | 14: move $gp,$v0 | |
5651 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
5652 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
5653 | ADDIUPC clears the low two bits of the instruction address, | |
5654 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 5655 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 5656 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
5657 | /* The microMIPS .cpload sequence uses the same assembly |
5658 | instructions as the traditional psABI version, but the | |
5659 | incoming $t9 has the low bit set. */ | |
5660 | else if (r_type == R_MICROMIPS_HI16) | |
5661 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
5662 | else |
5663 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
5664 | overflowed_p = mips_elf_overflow_p (value, 16); |
5665 | } | |
5666 | break; | |
5667 | ||
5668 | case R_MIPS_LO16: | |
d6f16593 | 5669 | case R_MIPS16_LO16: |
df58fc94 RS |
5670 | case R_MICROMIPS_LO16: |
5671 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
5672 | if (!gp_disp_p) |
5673 | value = (symbol + addend) & howto->dst_mask; | |
5674 | else | |
5675 | { | |
d6f16593 MR |
5676 | /* See the comment for R_MIPS16_HI16 above for the reason |
5677 | for this conditional. */ | |
5678 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 5679 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
5680 | else if (r_type == R_MICROMIPS_LO16 |
5681 | || r_type == R_MICROMIPS_HI0_LO16) | |
5682 | value = addend + gp - p + 3; | |
d6f16593 MR |
5683 | else |
5684 | value = addend + gp - p + 4; | |
b49e97c9 | 5685 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 5686 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
5687 | _gp_disp are normally generated from the .cpload |
5688 | pseudo-op. It generates code that normally looks like | |
5689 | this: | |
5690 | ||
5691 | lui $gp,%hi(_gp_disp) | |
5692 | addiu $gp,$gp,%lo(_gp_disp) | |
5693 | addu $gp,$gp,$t9 | |
5694 | ||
5695 | Here $t9 holds the address of the function being called, | |
5696 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
5697 | relocation can easily overflow in this situation, but the | |
5698 | R_MIPS_HI16 relocation will handle the overflow. | |
5699 | Therefore, we consider this a bug in the MIPS ABI, and do | |
5700 | not check for overflow here. */ | |
5701 | } | |
5702 | break; | |
5703 | ||
5704 | case R_MIPS_LITERAL: | |
df58fc94 | 5705 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
5706 | /* Because we don't merge literal sections, we can handle this |
5707 | just like R_MIPS_GPREL16. In the long run, we should merge | |
5708 | shared literals, and then we will need to additional work | |
5709 | here. */ | |
5710 | ||
5711 | /* Fall through. */ | |
5712 | ||
5713 | case R_MIPS16_GPREL: | |
5714 | /* The R_MIPS16_GPREL performs the same calculation as | |
5715 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
5716 | order. We don't need to do anything special here; the | |
5717 | differences are handled in mips_elf_perform_relocation. */ | |
5718 | case R_MIPS_GPREL16: | |
df58fc94 RS |
5719 | case R_MICROMIPS_GPREL7_S2: |
5720 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
5721 | /* Only sign-extend the addend if it was extracted from the |
5722 | instruction. If the addend was separate, leave it alone, | |
5723 | otherwise we may lose significant bits. */ | |
5724 | if (howto->partial_inplace) | |
a7ebbfdf | 5725 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
5726 | value = symbol + addend - gp; |
5727 | /* If the symbol was local, any earlier relocatable links will | |
5728 | have adjusted its addend with the gp offset, so compensate | |
5729 | for that now. Don't do it for symbols forced local in this | |
5730 | link, though, since they won't have had the gp offset applied | |
5731 | to them before. */ | |
5732 | if (was_local_p) | |
5733 | value += gp0; | |
b49e97c9 TS |
5734 | overflowed_p = mips_elf_overflow_p (value, 16); |
5735 | break; | |
5736 | ||
738e5348 RS |
5737 | case R_MIPS16_GOT16: |
5738 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
5739 | case R_MIPS_GOT16: |
5740 | case R_MIPS_CALL16: | |
df58fc94 RS |
5741 | case R_MICROMIPS_GOT16: |
5742 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 5743 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 5744 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 5745 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 5746 | { |
5c18022e | 5747 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 5748 | symbol + addend, !was_local_p); |
b49e97c9 TS |
5749 | if (value == MINUS_ONE) |
5750 | return bfd_reloc_outofrange; | |
5751 | value | |
a8028dd0 | 5752 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5753 | overflowed_p = mips_elf_overflow_p (value, 16); |
5754 | break; | |
5755 | } | |
5756 | ||
5757 | /* Fall through. */ | |
5758 | ||
0f20cc35 DJ |
5759 | case R_MIPS_TLS_GD: |
5760 | case R_MIPS_TLS_GOTTPREL: | |
5761 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 5762 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
5763 | case R_MIPS16_TLS_GD: |
5764 | case R_MIPS16_TLS_GOTTPREL: | |
5765 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5766 | case R_MICROMIPS_TLS_GD: |
5767 | case R_MICROMIPS_TLS_GOTTPREL: | |
5768 | case R_MICROMIPS_TLS_LDM: | |
5769 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
5770 | value = g; |
5771 | overflowed_p = mips_elf_overflow_p (value, 16); | |
5772 | break; | |
5773 | ||
5774 | case R_MIPS_GPREL32: | |
bce03d3d AO |
5775 | value = (addend + symbol + gp0 - gp); |
5776 | if (!save_addend) | |
5777 | value &= howto->dst_mask; | |
b49e97c9 TS |
5778 | break; |
5779 | ||
5780 | case R_MIPS_PC16: | |
bad36eac DJ |
5781 | case R_MIPS_GNU_REL16_S2: |
5782 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
5783 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
5784 | value >>= howto->rightshift; |
5785 | value &= howto->dst_mask; | |
b49e97c9 TS |
5786 | break; |
5787 | ||
df58fc94 RS |
5788 | case R_MICROMIPS_PC7_S1: |
5789 | value = symbol + _bfd_mips_elf_sign_extend (addend, 8) - p; | |
5790 | overflowed_p = mips_elf_overflow_p (value, 8); | |
5791 | value >>= howto->rightshift; | |
5792 | value &= howto->dst_mask; | |
5793 | break; | |
5794 | ||
5795 | case R_MICROMIPS_PC10_S1: | |
5796 | value = symbol + _bfd_mips_elf_sign_extend (addend, 11) - p; | |
5797 | overflowed_p = mips_elf_overflow_p (value, 11); | |
5798 | value >>= howto->rightshift; | |
5799 | value &= howto->dst_mask; | |
5800 | break; | |
5801 | ||
5802 | case R_MICROMIPS_PC16_S1: | |
5803 | value = symbol + _bfd_mips_elf_sign_extend (addend, 17) - p; | |
5804 | overflowed_p = mips_elf_overflow_p (value, 17); | |
5805 | value >>= howto->rightshift; | |
5806 | value &= howto->dst_mask; | |
5807 | break; | |
5808 | ||
5809 | case R_MICROMIPS_PC23_S2: | |
5810 | value = symbol + _bfd_mips_elf_sign_extend (addend, 25) - ((p | 3) ^ 3); | |
5811 | overflowed_p = mips_elf_overflow_p (value, 25); | |
5812 | value >>= howto->rightshift; | |
5813 | value &= howto->dst_mask; | |
5814 | break; | |
5815 | ||
b49e97c9 TS |
5816 | case R_MIPS_GOT_HI16: |
5817 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
5818 | case R_MICROMIPS_GOT_HI16: |
5819 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
5820 | /* We're allowed to handle these two relocations identically. |
5821 | The dynamic linker is allowed to handle the CALL relocations | |
5822 | differently by creating a lazy evaluation stub. */ | |
5823 | value = g; | |
5824 | value = mips_elf_high (value); | |
5825 | value &= howto->dst_mask; | |
5826 | break; | |
5827 | ||
5828 | case R_MIPS_GOT_LO16: | |
5829 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5830 | case R_MICROMIPS_GOT_LO16: |
5831 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
5832 | value = g & howto->dst_mask; |
5833 | break; | |
5834 | ||
5835 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 5836 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 5837 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
5838 | if (value == MINUS_ONE) |
5839 | return bfd_reloc_outofrange; | |
a8028dd0 | 5840 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
5841 | overflowed_p = mips_elf_overflow_p (value, 16); |
5842 | break; | |
5843 | ||
5844 | case R_MIPS_GOT_OFST: | |
df58fc94 | 5845 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 5846 | if (local_p) |
5c18022e | 5847 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
5848 | else |
5849 | value = addend; | |
b49e97c9 TS |
5850 | overflowed_p = mips_elf_overflow_p (value, 16); |
5851 | break; | |
5852 | ||
5853 | case R_MIPS_SUB: | |
df58fc94 | 5854 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
5855 | value = symbol - addend; |
5856 | value &= howto->dst_mask; | |
5857 | break; | |
5858 | ||
5859 | case R_MIPS_HIGHER: | |
df58fc94 | 5860 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
5861 | value = mips_elf_higher (addend + symbol); |
5862 | value &= howto->dst_mask; | |
5863 | break; | |
5864 | ||
5865 | case R_MIPS_HIGHEST: | |
df58fc94 | 5866 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
5867 | value = mips_elf_highest (addend + symbol); |
5868 | value &= howto->dst_mask; | |
5869 | break; | |
5870 | ||
5871 | case R_MIPS_SCN_DISP: | |
df58fc94 | 5872 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
5873 | value = symbol + addend - sec->output_offset; |
5874 | value &= howto->dst_mask; | |
5875 | break; | |
5876 | ||
b49e97c9 | 5877 | case R_MIPS_JALR: |
df58fc94 | 5878 | case R_MICROMIPS_JALR: |
1367d393 ILT |
5879 | /* This relocation is only a hint. In some cases, we optimize |
5880 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
5881 | when the symbol does not resolve locally. */ |
5882 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 ILT |
5883 | return bfd_reloc_continue; |
5884 | value = symbol + addend; | |
5885 | break; | |
b49e97c9 | 5886 | |
1367d393 | 5887 | case R_MIPS_PJUMP: |
b49e97c9 TS |
5888 | case R_MIPS_GNU_VTINHERIT: |
5889 | case R_MIPS_GNU_VTENTRY: | |
5890 | /* We don't do anything with these at present. */ | |
5891 | return bfd_reloc_continue; | |
5892 | ||
5893 | default: | |
5894 | /* An unrecognized relocation type. */ | |
5895 | return bfd_reloc_notsupported; | |
5896 | } | |
5897 | ||
5898 | /* Store the VALUE for our caller. */ | |
5899 | *valuep = value; | |
5900 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
5901 | } | |
5902 | ||
5903 | /* Obtain the field relocated by RELOCATION. */ | |
5904 | ||
5905 | static bfd_vma | |
9719ad41 RS |
5906 | mips_elf_obtain_contents (reloc_howto_type *howto, |
5907 | const Elf_Internal_Rela *relocation, | |
5908 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
5909 | { |
5910 | bfd_vma x; | |
5911 | bfd_byte *location = contents + relocation->r_offset; | |
5912 | ||
5913 | /* Obtain the bytes. */ | |
5914 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
5915 | ||
b49e97c9 TS |
5916 | return x; |
5917 | } | |
5918 | ||
5919 | /* It has been determined that the result of the RELOCATION is the | |
5920 | VALUE. Use HOWTO to place VALUE into the output file at the | |
5921 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 5922 | relocation applies. |
38a7df63 | 5923 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 5924 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 5925 | |
b34976b6 | 5926 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 5927 | |
b34976b6 | 5928 | static bfd_boolean |
9719ad41 RS |
5929 | mips_elf_perform_relocation (struct bfd_link_info *info, |
5930 | reloc_howto_type *howto, | |
5931 | const Elf_Internal_Rela *relocation, | |
5932 | bfd_vma value, bfd *input_bfd, | |
5933 | asection *input_section, bfd_byte *contents, | |
38a7df63 | 5934 | bfd_boolean cross_mode_jump_p) |
b49e97c9 TS |
5935 | { |
5936 | bfd_vma x; | |
5937 | bfd_byte *location; | |
5938 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5939 | ||
5940 | /* Figure out where the relocation is occurring. */ | |
5941 | location = contents + relocation->r_offset; | |
5942 | ||
df58fc94 | 5943 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
d6f16593 | 5944 | |
b49e97c9 TS |
5945 | /* Obtain the current value. */ |
5946 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5947 | ||
5948 | /* Clear the field we are setting. */ | |
5949 | x &= ~howto->dst_mask; | |
5950 | ||
b49e97c9 TS |
5951 | /* Set the field. */ |
5952 | x |= (value & howto->dst_mask); | |
5953 | ||
5954 | /* If required, turn JAL into JALX. */ | |
38a7df63 | 5955 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 5956 | { |
b34976b6 | 5957 | bfd_boolean ok; |
b49e97c9 TS |
5958 | bfd_vma opcode = x >> 26; |
5959 | bfd_vma jalx_opcode; | |
5960 | ||
5961 | /* Check to see if the opcode is already JAL or JALX. */ | |
5962 | if (r_type == R_MIPS16_26) | |
5963 | { | |
5964 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5965 | jalx_opcode = 0x7; | |
5966 | } | |
df58fc94 RS |
5967 | else if (r_type == R_MICROMIPS_26_S1) |
5968 | { | |
5969 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
5970 | jalx_opcode = 0x3c; | |
5971 | } | |
b49e97c9 TS |
5972 | else |
5973 | { | |
5974 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5975 | jalx_opcode = 0x1d; | |
5976 | } | |
5977 | ||
3bdf9505 MR |
5978 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
5979 | convert J or JALS to JALX. */ | |
b49e97c9 TS |
5980 | if (!ok) |
5981 | { | |
5982 | (*_bfd_error_handler) | |
3bdf9505 | 5983 | (_("%B: %A+0x%lx: Unsupported jump between ISA modes; consider recompiling with interlinking enabled."), |
d003868e AM |
5984 | input_bfd, |
5985 | input_section, | |
b49e97c9 TS |
5986 | (unsigned long) relocation->r_offset); |
5987 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5988 | return FALSE; |
b49e97c9 TS |
5989 | } |
5990 | ||
5991 | /* Make this the JALX opcode. */ | |
5992 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5993 | } | |
5994 | ||
38a7df63 CF |
5995 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
5996 | range. */ | |
cd8d5a82 | 5997 | if (!info->relocatable |
38a7df63 | 5998 | && !cross_mode_jump_p |
cd8d5a82 CF |
5999 | && ((JAL_TO_BAL_P (input_bfd) |
6000 | && r_type == R_MIPS_26 | |
6001 | && (x >> 26) == 0x3) /* jal addr */ | |
6002 | || (JALR_TO_BAL_P (input_bfd) | |
6003 | && r_type == R_MIPS_JALR | |
38a7df63 CF |
6004 | && x == 0x0320f809) /* jalr t9 */ |
6005 | || (JR_TO_B_P (input_bfd) | |
6006 | && r_type == R_MIPS_JALR | |
6007 | && x == 0x03200008))) /* jr t9 */ | |
1367d393 ILT |
6008 | { |
6009 | bfd_vma addr; | |
6010 | bfd_vma dest; | |
6011 | bfd_signed_vma off; | |
6012 | ||
6013 | addr = (input_section->output_section->vma | |
6014 | + input_section->output_offset | |
6015 | + relocation->r_offset | |
6016 | + 4); | |
6017 | if (r_type == R_MIPS_26) | |
6018 | dest = (value << 2) | ((addr >> 28) << 28); | |
6019 | else | |
6020 | dest = value; | |
6021 | off = dest - addr; | |
6022 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 CF |
6023 | { |
6024 | if (x == 0x03200008) /* jr t9 */ | |
6025 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ | |
6026 | else | |
6027 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
6028 | } | |
1367d393 ILT |
6029 | } |
6030 | ||
b49e97c9 TS |
6031 | /* Put the value into the output. */ |
6032 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 | 6033 | |
df58fc94 RS |
6034 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !info->relocatable, |
6035 | location); | |
d6f16593 | 6036 | |
b34976b6 | 6037 | return TRUE; |
b49e97c9 | 6038 | } |
b49e97c9 | 6039 | \f |
b49e97c9 TS |
6040 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6041 | is the original relocation, which is now being transformed into a | |
6042 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
6043 | caller should store the result in place of the original addend. */ | |
6044 | ||
b34976b6 | 6045 | static bfd_boolean |
9719ad41 RS |
6046 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
6047 | struct bfd_link_info *info, | |
6048 | const Elf_Internal_Rela *rel, | |
6049 | struct mips_elf_link_hash_entry *h, | |
6050 | asection *sec, bfd_vma symbol, | |
6051 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 6052 | { |
947216bf | 6053 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
6054 | asection *sreloc; |
6055 | bfd *dynobj; | |
6056 | int r_type; | |
5d41f0b6 RS |
6057 | long indx; |
6058 | bfd_boolean defined_p; | |
0a44bf69 | 6059 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6060 | |
0a44bf69 | 6061 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6062 | BFD_ASSERT (htab != NULL); |
6063 | ||
b49e97c9 TS |
6064 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
6065 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 6066 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
6067 | BFD_ASSERT (sreloc != NULL); |
6068 | BFD_ASSERT (sreloc->contents != NULL); | |
6069 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 6070 | < sreloc->size); |
b49e97c9 | 6071 | |
b49e97c9 TS |
6072 | outrel[0].r_offset = |
6073 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
6074 | if (ABI_64_P (output_bfd)) |
6075 | { | |
6076 | outrel[1].r_offset = | |
6077 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6078 | outrel[2].r_offset = | |
6079 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6080 | } | |
b49e97c9 | 6081 | |
c5ae1840 | 6082 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6083 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
6084 | return TRUE; |
6085 | ||
6086 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6087 | { |
6088 | /* The relocation field has been converted into a relative value of | |
6089 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6090 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6091 | *addendp += symbol; |
5d41f0b6 | 6092 | return TRUE; |
0d591ff7 | 6093 | } |
b49e97c9 | 6094 | |
5d41f0b6 RS |
6095 | /* We must now calculate the dynamic symbol table index to use |
6096 | in the relocation. */ | |
d4a77f3f | 6097 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6098 | { |
020d7251 | 6099 | BFD_ASSERT (htab->is_vxworks || h->global_got_area != GGA_NONE); |
5d41f0b6 RS |
6100 | indx = h->root.dynindx; |
6101 | if (SGI_COMPAT (output_bfd)) | |
6102 | defined_p = h->root.def_regular; | |
6103 | else | |
6104 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6105 | relocation field. It therefore treats relocs against | |
6106 | defined symbols in the same way as relocs against | |
6107 | undefined symbols. */ | |
6108 | defined_p = FALSE; | |
6109 | } | |
b49e97c9 TS |
6110 | else |
6111 | { | |
5d41f0b6 RS |
6112 | if (sec != NULL && bfd_is_abs_section (sec)) |
6113 | indx = 0; | |
6114 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6115 | { |
5d41f0b6 RS |
6116 | bfd_set_error (bfd_error_bad_value); |
6117 | return FALSE; | |
b49e97c9 TS |
6118 | } |
6119 | else | |
6120 | { | |
5d41f0b6 | 6121 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6122 | if (indx == 0) |
6123 | { | |
6124 | asection *osec = htab->root.text_index_section; | |
6125 | indx = elf_section_data (osec)->dynindx; | |
6126 | } | |
5d41f0b6 RS |
6127 | if (indx == 0) |
6128 | abort (); | |
b49e97c9 TS |
6129 | } |
6130 | ||
5d41f0b6 RS |
6131 | /* Instead of generating a relocation using the section |
6132 | symbol, we may as well make it a fully relative | |
6133 | relocation. We want to avoid generating relocations to | |
6134 | local symbols because we used to generate them | |
6135 | incorrectly, without adding the original symbol value, | |
6136 | which is mandated by the ABI for section symbols. In | |
6137 | order to give dynamic loaders and applications time to | |
6138 | phase out the incorrect use, we refrain from emitting | |
6139 | section-relative relocations. It's not like they're | |
6140 | useful, after all. This should be a bit more efficient | |
6141 | as well. */ | |
6142 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6143 | the ABI says that relocations against STN_UNDEF should have | |
6144 | a symbol value of 0. Irix rld honors this, so relocations | |
6145 | against STN_UNDEF have no effect. */ | |
6146 | if (!SGI_COMPAT (output_bfd)) | |
6147 | indx = 0; | |
6148 | defined_p = TRUE; | |
b49e97c9 TS |
6149 | } |
6150 | ||
5d41f0b6 RS |
6151 | /* If the relocation was previously an absolute relocation and |
6152 | this symbol will not be referred to by the relocation, we must | |
6153 | adjust it by the value we give it in the dynamic symbol table. | |
6154 | Otherwise leave the job up to the dynamic linker. */ | |
6155 | if (defined_p && r_type != R_MIPS_REL32) | |
6156 | *addendp += symbol; | |
6157 | ||
0a44bf69 RS |
6158 | if (htab->is_vxworks) |
6159 | /* VxWorks uses non-relative relocations for this. */ | |
6160 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6161 | else | |
6162 | /* The relocation is always an REL32 relocation because we don't | |
6163 | know where the shared library will wind up at load-time. */ | |
6164 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6165 | R_MIPS_REL32); | |
6166 | ||
5d41f0b6 RS |
6167 | /* For strict adherence to the ABI specification, we should |
6168 | generate a R_MIPS_64 relocation record by itself before the | |
6169 | _REL32/_64 record as well, such that the addend is read in as | |
6170 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6171 | However, since none of the existing ELF64 MIPS dynamic | |
6172 | loaders seems to care, we don't waste space with these | |
6173 | artificial relocations. If this turns out to not be true, | |
6174 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6175 | as to make room for a pair of dynamic relocations per | |
6176 | invocation if ABI_64_P, and here we should generate an | |
6177 | additional relocation record with R_MIPS_64 by itself for a | |
6178 | NULL symbol before this relocation record. */ | |
6179 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6180 | ABI_64_P (output_bfd) | |
6181 | ? R_MIPS_64 | |
6182 | : R_MIPS_NONE); | |
6183 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6184 | ||
6185 | /* Adjust the output offset of the relocation to reference the | |
6186 | correct location in the output file. */ | |
6187 | outrel[0].r_offset += (input_section->output_section->vma | |
6188 | + input_section->output_offset); | |
6189 | outrel[1].r_offset += (input_section->output_section->vma | |
6190 | + input_section->output_offset); | |
6191 | outrel[2].r_offset += (input_section->output_section->vma | |
6192 | + input_section->output_offset); | |
6193 | ||
b49e97c9 TS |
6194 | /* Put the relocation back out. We have to use the special |
6195 | relocation outputter in the 64-bit case since the 64-bit | |
6196 | relocation format is non-standard. */ | |
6197 | if (ABI_64_P (output_bfd)) | |
6198 | { | |
6199 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6200 | (output_bfd, &outrel[0], | |
6201 | (sreloc->contents | |
6202 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6203 | } | |
0a44bf69 RS |
6204 | else if (htab->is_vxworks) |
6205 | { | |
6206 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6207 | outrel[0].r_addend = *addendp; | |
6208 | bfd_elf32_swap_reloca_out | |
6209 | (output_bfd, &outrel[0], | |
6210 | (sreloc->contents | |
6211 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6212 | } | |
b49e97c9 | 6213 | else |
947216bf AM |
6214 | bfd_elf32_swap_reloc_out |
6215 | (output_bfd, &outrel[0], | |
6216 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6217 | |
b49e97c9 TS |
6218 | /* We've now added another relocation. */ |
6219 | ++sreloc->reloc_count; | |
6220 | ||
6221 | /* Make sure the output section is writable. The dynamic linker | |
6222 | will be writing to it. */ | |
6223 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6224 | |= SHF_WRITE; | |
6225 | ||
6226 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6227 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6228 | { |
3d4d4302 | 6229 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6230 | bfd_byte *cr; |
6231 | ||
6232 | if (scpt) | |
6233 | { | |
6234 | Elf32_crinfo cptrel; | |
6235 | ||
6236 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6237 | cptrel.vaddr = (rel->r_offset | |
6238 | + input_section->output_section->vma | |
6239 | + input_section->output_offset); | |
6240 | if (r_type == R_MIPS_REL32) | |
6241 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6242 | else | |
6243 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6244 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6245 | cptrel.konst = *addendp; | |
6246 | ||
6247 | cr = (scpt->contents | |
6248 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6249 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6250 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6251 | ((Elf32_External_crinfo *) cr | |
6252 | + scpt->reloc_count)); | |
6253 | ++scpt->reloc_count; | |
6254 | } | |
6255 | } | |
6256 | ||
943284cc DJ |
6257 | /* If we've written this relocation for a readonly section, |
6258 | we need to set DF_TEXTREL again, so that we do not delete the | |
6259 | DT_TEXTREL tag. */ | |
6260 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6261 | info->flags |= DF_TEXTREL; | |
6262 | ||
b34976b6 | 6263 | return TRUE; |
b49e97c9 TS |
6264 | } |
6265 | \f | |
b49e97c9 TS |
6266 | /* Return the MACH for a MIPS e_flags value. */ |
6267 | ||
6268 | unsigned long | |
9719ad41 | 6269 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6270 | { |
6271 | switch (flags & EF_MIPS_MACH) | |
6272 | { | |
6273 | case E_MIPS_MACH_3900: | |
6274 | return bfd_mach_mips3900; | |
6275 | ||
6276 | case E_MIPS_MACH_4010: | |
6277 | return bfd_mach_mips4010; | |
6278 | ||
6279 | case E_MIPS_MACH_4100: | |
6280 | return bfd_mach_mips4100; | |
6281 | ||
6282 | case E_MIPS_MACH_4111: | |
6283 | return bfd_mach_mips4111; | |
6284 | ||
00707a0e RS |
6285 | case E_MIPS_MACH_4120: |
6286 | return bfd_mach_mips4120; | |
6287 | ||
b49e97c9 TS |
6288 | case E_MIPS_MACH_4650: |
6289 | return bfd_mach_mips4650; | |
6290 | ||
00707a0e RS |
6291 | case E_MIPS_MACH_5400: |
6292 | return bfd_mach_mips5400; | |
6293 | ||
6294 | case E_MIPS_MACH_5500: | |
6295 | return bfd_mach_mips5500; | |
6296 | ||
e407c74b NC |
6297 | case E_MIPS_MACH_5900: |
6298 | return bfd_mach_mips5900; | |
6299 | ||
0d2e43ed ILT |
6300 | case E_MIPS_MACH_9000: |
6301 | return bfd_mach_mips9000; | |
6302 | ||
b49e97c9 TS |
6303 | case E_MIPS_MACH_SB1: |
6304 | return bfd_mach_mips_sb1; | |
6305 | ||
350cc38d MS |
6306 | case E_MIPS_MACH_LS2E: |
6307 | return bfd_mach_mips_loongson_2e; | |
6308 | ||
6309 | case E_MIPS_MACH_LS2F: | |
6310 | return bfd_mach_mips_loongson_2f; | |
6311 | ||
fd503541 NC |
6312 | case E_MIPS_MACH_LS3A: |
6313 | return bfd_mach_mips_loongson_3a; | |
6314 | ||
432233b3 AP |
6315 | case E_MIPS_MACH_OCTEON2: |
6316 | return bfd_mach_mips_octeon2; | |
6317 | ||
6f179bd0 AN |
6318 | case E_MIPS_MACH_OCTEON: |
6319 | return bfd_mach_mips_octeon; | |
6320 | ||
52b6b6b9 JM |
6321 | case E_MIPS_MACH_XLR: |
6322 | return bfd_mach_mips_xlr; | |
6323 | ||
b49e97c9 TS |
6324 | default: |
6325 | switch (flags & EF_MIPS_ARCH) | |
6326 | { | |
6327 | default: | |
6328 | case E_MIPS_ARCH_1: | |
6329 | return bfd_mach_mips3000; | |
b49e97c9 TS |
6330 | |
6331 | case E_MIPS_ARCH_2: | |
6332 | return bfd_mach_mips6000; | |
b49e97c9 TS |
6333 | |
6334 | case E_MIPS_ARCH_3: | |
6335 | return bfd_mach_mips4000; | |
b49e97c9 TS |
6336 | |
6337 | case E_MIPS_ARCH_4: | |
6338 | return bfd_mach_mips8000; | |
b49e97c9 TS |
6339 | |
6340 | case E_MIPS_ARCH_5: | |
6341 | return bfd_mach_mips5; | |
b49e97c9 TS |
6342 | |
6343 | case E_MIPS_ARCH_32: | |
6344 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
6345 | |
6346 | case E_MIPS_ARCH_64: | |
6347 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
6348 | |
6349 | case E_MIPS_ARCH_32R2: | |
6350 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
6351 | |
6352 | case E_MIPS_ARCH_64R2: | |
6353 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
6354 | } |
6355 | } | |
6356 | ||
6357 | return 0; | |
6358 | } | |
6359 | ||
6360 | /* Return printable name for ABI. */ | |
6361 | ||
6362 | static INLINE char * | |
9719ad41 | 6363 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
6364 | { |
6365 | flagword flags; | |
6366 | ||
6367 | flags = elf_elfheader (abfd)->e_flags; | |
6368 | switch (flags & EF_MIPS_ABI) | |
6369 | { | |
6370 | case 0: | |
6371 | if (ABI_N32_P (abfd)) | |
6372 | return "N32"; | |
6373 | else if (ABI_64_P (abfd)) | |
6374 | return "64"; | |
6375 | else | |
6376 | return "none"; | |
6377 | case E_MIPS_ABI_O32: | |
6378 | return "O32"; | |
6379 | case E_MIPS_ABI_O64: | |
6380 | return "O64"; | |
6381 | case E_MIPS_ABI_EABI32: | |
6382 | return "EABI32"; | |
6383 | case E_MIPS_ABI_EABI64: | |
6384 | return "EABI64"; | |
6385 | default: | |
6386 | return "unknown abi"; | |
6387 | } | |
6388 | } | |
6389 | \f | |
6390 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
6391 | other is for small objects. All the small objects are kept | |
6392 | together, and then referenced via the gp pointer, which yields | |
6393 | faster assembler code. This is what we use for the small common | |
6394 | section. This approach is copied from ecoff.c. */ | |
6395 | static asection mips_elf_scom_section; | |
6396 | static asymbol mips_elf_scom_symbol; | |
6397 | static asymbol *mips_elf_scom_symbol_ptr; | |
6398 | ||
6399 | /* MIPS ELF also uses an acommon section, which represents an | |
6400 | allocated common symbol which may be overridden by a | |
6401 | definition in a shared library. */ | |
6402 | static asection mips_elf_acom_section; | |
6403 | static asymbol mips_elf_acom_symbol; | |
6404 | static asymbol *mips_elf_acom_symbol_ptr; | |
6405 | ||
738e5348 | 6406 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
6407 | |
6408 | void | |
9719ad41 | 6409 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
6410 | { |
6411 | elf_symbol_type *elfsym; | |
6412 | ||
738e5348 | 6413 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
6414 | elfsym = (elf_symbol_type *) asym; |
6415 | switch (elfsym->internal_elf_sym.st_shndx) | |
6416 | { | |
6417 | case SHN_MIPS_ACOMMON: | |
6418 | /* This section is used in a dynamically linked executable file. | |
6419 | It is an allocated common section. The dynamic linker can | |
6420 | either resolve these symbols to something in a shared | |
6421 | library, or it can just leave them here. For our purposes, | |
6422 | we can consider these symbols to be in a new section. */ | |
6423 | if (mips_elf_acom_section.name == NULL) | |
6424 | { | |
6425 | /* Initialize the acommon section. */ | |
6426 | mips_elf_acom_section.name = ".acommon"; | |
6427 | mips_elf_acom_section.flags = SEC_ALLOC; | |
6428 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
6429 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
6430 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
6431 | mips_elf_acom_symbol.name = ".acommon"; | |
6432 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
6433 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
6434 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
6435 | } | |
6436 | asym->section = &mips_elf_acom_section; | |
6437 | break; | |
6438 | ||
6439 | case SHN_COMMON: | |
6440 | /* Common symbols less than the GP size are automatically | |
6441 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
6442 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 6443 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
6444 | || IRIX_COMPAT (abfd) == ict_irix6) |
6445 | break; | |
6446 | /* Fall through. */ | |
6447 | case SHN_MIPS_SCOMMON: | |
6448 | if (mips_elf_scom_section.name == NULL) | |
6449 | { | |
6450 | /* Initialize the small common section. */ | |
6451 | mips_elf_scom_section.name = ".scommon"; | |
6452 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
6453 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
6454 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
6455 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
6456 | mips_elf_scom_symbol.name = ".scommon"; | |
6457 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
6458 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
6459 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
6460 | } | |
6461 | asym->section = &mips_elf_scom_section; | |
6462 | asym->value = elfsym->internal_elf_sym.st_size; | |
6463 | break; | |
6464 | ||
6465 | case SHN_MIPS_SUNDEFINED: | |
6466 | asym->section = bfd_und_section_ptr; | |
6467 | break; | |
6468 | ||
b49e97c9 | 6469 | case SHN_MIPS_TEXT: |
00b4930b TS |
6470 | { |
6471 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
6472 | ||
00b4930b TS |
6473 | if (section != NULL) |
6474 | { | |
6475 | asym->section = section; | |
6476 | /* MIPS_TEXT is a bit special, the address is not an offset | |
6477 | to the base of the .text section. So substract the section | |
6478 | base address to make it an offset. */ | |
6479 | asym->value -= section->vma; | |
6480 | } | |
6481 | } | |
b49e97c9 TS |
6482 | break; |
6483 | ||
6484 | case SHN_MIPS_DATA: | |
00b4930b TS |
6485 | { |
6486 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
6487 | ||
00b4930b TS |
6488 | if (section != NULL) |
6489 | { | |
6490 | asym->section = section; | |
6491 | /* MIPS_DATA is a bit special, the address is not an offset | |
6492 | to the base of the .data section. So substract the section | |
6493 | base address to make it an offset. */ | |
6494 | asym->value -= section->vma; | |
6495 | } | |
6496 | } | |
b49e97c9 | 6497 | break; |
b49e97c9 | 6498 | } |
738e5348 | 6499 | |
df58fc94 RS |
6500 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
6501 | or microMIPS one. */ | |
738e5348 RS |
6502 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
6503 | && (asym->value & 1) != 0) | |
6504 | { | |
6505 | asym->value--; | |
df58fc94 RS |
6506 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
6507 | elfsym->internal_elf_sym.st_other | |
6508 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
6509 | else | |
6510 | elfsym->internal_elf_sym.st_other | |
6511 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 6512 | } |
b49e97c9 TS |
6513 | } |
6514 | \f | |
8c946ed5 RS |
6515 | /* Implement elf_backend_eh_frame_address_size. This differs from |
6516 | the default in the way it handles EABI64. | |
6517 | ||
6518 | EABI64 was originally specified as an LP64 ABI, and that is what | |
6519 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
6520 | historically accepted the combination of -mabi=eabi and -mlong32, | |
6521 | and this ILP32 variation has become semi-official over time. | |
6522 | Both forms use elf32 and have pointer-sized FDE addresses. | |
6523 | ||
6524 | If an EABI object was generated by GCC 4.0 or above, it will have | |
6525 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
6526 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
6527 | have no special marking to distinguish them from LP64 objects. | |
6528 | ||
6529 | We don't want users of the official LP64 ABI to be punished for the | |
6530 | existence of the ILP32 variant, but at the same time, we don't want | |
6531 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
6532 | We therefore take the following approach: | |
6533 | ||
6534 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
6535 | determine the pointer size. | |
6536 | ||
6537 | - Otherwise check the type of the first relocation. Assume that | |
6538 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
6539 | ||
6540 | - Otherwise punt. | |
6541 | ||
6542 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
6543 | compilers because, in the kind of output generated by those compilers, | |
6544 | the first relocation will be associated with either a CIE personality | |
6545 | routine or an FDE start address. Furthermore, the compilers never | |
6546 | used a special (non-pointer) encoding for this ABI. | |
6547 | ||
6548 | Checking the relocation type should also be safe because there is no | |
6549 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
6550 | did so. */ | |
6551 | ||
6552 | unsigned int | |
6553 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
6554 | { | |
6555 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
6556 | return 8; | |
6557 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
6558 | { | |
6559 | bfd_boolean long32_p, long64_p; | |
6560 | ||
6561 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
6562 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
6563 | if (long32_p && long64_p) | |
6564 | return 0; | |
6565 | if (long32_p) | |
6566 | return 4; | |
6567 | if (long64_p) | |
6568 | return 8; | |
6569 | ||
6570 | if (sec->reloc_count > 0 | |
6571 | && elf_section_data (sec)->relocs != NULL | |
6572 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
6573 | == R_MIPS_64)) | |
6574 | return 8; | |
6575 | ||
6576 | return 0; | |
6577 | } | |
6578 | return 4; | |
6579 | } | |
6580 | \f | |
174fd7f9 RS |
6581 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
6582 | relocations against two unnamed section symbols to resolve to the | |
6583 | same address. For example, if we have code like: | |
6584 | ||
6585 | lw $4,%got_disp(.data)($gp) | |
6586 | lw $25,%got_disp(.text)($gp) | |
6587 | jalr $25 | |
6588 | ||
6589 | then the linker will resolve both relocations to .data and the program | |
6590 | will jump there rather than to .text. | |
6591 | ||
6592 | We can work around this problem by giving names to local section symbols. | |
6593 | This is also what the MIPSpro tools do. */ | |
6594 | ||
6595 | bfd_boolean | |
6596 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
6597 | { | |
6598 | return SGI_COMPAT (abfd); | |
6599 | } | |
6600 | \f | |
b49e97c9 TS |
6601 | /* Work over a section just before writing it out. This routine is |
6602 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
6603 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
6604 | a better way. */ | |
6605 | ||
b34976b6 | 6606 | bfd_boolean |
9719ad41 | 6607 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
6608 | { |
6609 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
6610 | && hdr->sh_size > 0) | |
6611 | { | |
6612 | bfd_byte buf[4]; | |
6613 | ||
6614 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
6615 | BFD_ASSERT (hdr->contents == NULL); | |
6616 | ||
6617 | if (bfd_seek (abfd, | |
6618 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
6619 | SEEK_SET) != 0) | |
b34976b6 | 6620 | return FALSE; |
b49e97c9 | 6621 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6622 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6623 | return FALSE; |
b49e97c9 TS |
6624 | } |
6625 | ||
6626 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
6627 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
6628 | && mips_elf_section_data (hdr->bfd_section) != NULL |
6629 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
6630 | { |
6631 | bfd_byte *contents, *l, *lend; | |
6632 | ||
f0abc2a1 AM |
6633 | /* We stored the section contents in the tdata field in the |
6634 | set_section_contents routine. We save the section contents | |
6635 | so that we don't have to read them again. | |
b49e97c9 TS |
6636 | At this point we know that elf_gp is set, so we can look |
6637 | through the section contents to see if there is an | |
6638 | ODK_REGINFO structure. */ | |
6639 | ||
f0abc2a1 | 6640 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
6641 | l = contents; |
6642 | lend = contents + hdr->sh_size; | |
6643 | while (l + sizeof (Elf_External_Options) <= lend) | |
6644 | { | |
6645 | Elf_Internal_Options intopt; | |
6646 | ||
6647 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6648 | &intopt); | |
1bc8074d MR |
6649 | if (intopt.size < sizeof (Elf_External_Options)) |
6650 | { | |
6651 | (*_bfd_error_handler) | |
6652 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6653 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6654 | break; | |
6655 | } | |
b49e97c9 TS |
6656 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6657 | { | |
6658 | bfd_byte buf[8]; | |
6659 | ||
6660 | if (bfd_seek (abfd, | |
6661 | (hdr->sh_offset | |
6662 | + (l - contents) | |
6663 | + sizeof (Elf_External_Options) | |
6664 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
6665 | SEEK_SET) != 0) | |
b34976b6 | 6666 | return FALSE; |
b49e97c9 | 6667 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6668 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 6669 | return FALSE; |
b49e97c9 TS |
6670 | } |
6671 | else if (intopt.kind == ODK_REGINFO) | |
6672 | { | |
6673 | bfd_byte buf[4]; | |
6674 | ||
6675 | if (bfd_seek (abfd, | |
6676 | (hdr->sh_offset | |
6677 | + (l - contents) | |
6678 | + sizeof (Elf_External_Options) | |
6679 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
6680 | SEEK_SET) != 0) | |
b34976b6 | 6681 | return FALSE; |
b49e97c9 | 6682 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 6683 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 6684 | return FALSE; |
b49e97c9 TS |
6685 | } |
6686 | l += intopt.size; | |
6687 | } | |
6688 | } | |
6689 | ||
6690 | if (hdr->bfd_section != NULL) | |
6691 | { | |
6692 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
6693 | ||
2d0f9ad9 JM |
6694 | /* .sbss is not handled specially here because the GNU/Linux |
6695 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
6696 | changing it back to NOBITS breaks the binary. The entry in | |
6697 | _bfd_mips_elf_special_sections will ensure the correct flags | |
6698 | are set on .sbss if BFD creates it without reading it from an | |
6699 | input file, and without special handling here the flags set | |
6700 | on it in an input file will be followed. */ | |
b49e97c9 TS |
6701 | if (strcmp (name, ".sdata") == 0 |
6702 | || strcmp (name, ".lit8") == 0 | |
6703 | || strcmp (name, ".lit4") == 0) | |
6704 | { | |
6705 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
6706 | hdr->sh_type = SHT_PROGBITS; | |
6707 | } | |
b49e97c9 TS |
6708 | else if (strcmp (name, ".srdata") == 0) |
6709 | { | |
6710 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
6711 | hdr->sh_type = SHT_PROGBITS; | |
6712 | } | |
6713 | else if (strcmp (name, ".compact_rel") == 0) | |
6714 | { | |
6715 | hdr->sh_flags = 0; | |
6716 | hdr->sh_type = SHT_PROGBITS; | |
6717 | } | |
6718 | else if (strcmp (name, ".rtproc") == 0) | |
6719 | { | |
6720 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
6721 | { | |
6722 | unsigned int adjust; | |
6723 | ||
6724 | adjust = hdr->sh_size % hdr->sh_addralign; | |
6725 | if (adjust != 0) | |
6726 | hdr->sh_size += hdr->sh_addralign - adjust; | |
6727 | } | |
6728 | } | |
6729 | } | |
6730 | ||
b34976b6 | 6731 | return TRUE; |
b49e97c9 TS |
6732 | } |
6733 | ||
6734 | /* Handle a MIPS specific section when reading an object file. This | |
6735 | is called when elfcode.h finds a section with an unknown type. | |
6736 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
6737 | ||
6738 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
6739 | how to. */ | |
6740 | ||
b34976b6 | 6741 | bfd_boolean |
6dc132d9 L |
6742 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
6743 | Elf_Internal_Shdr *hdr, | |
6744 | const char *name, | |
6745 | int shindex) | |
b49e97c9 TS |
6746 | { |
6747 | flagword flags = 0; | |
6748 | ||
6749 | /* There ought to be a place to keep ELF backend specific flags, but | |
6750 | at the moment there isn't one. We just keep track of the | |
6751 | sections by their name, instead. Fortunately, the ABI gives | |
6752 | suggested names for all the MIPS specific sections, so we will | |
6753 | probably get away with this. */ | |
6754 | switch (hdr->sh_type) | |
6755 | { | |
6756 | case SHT_MIPS_LIBLIST: | |
6757 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 6758 | return FALSE; |
b49e97c9 TS |
6759 | break; |
6760 | case SHT_MIPS_MSYM: | |
6761 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 6762 | return FALSE; |
b49e97c9 TS |
6763 | break; |
6764 | case SHT_MIPS_CONFLICT: | |
6765 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 6766 | return FALSE; |
b49e97c9 TS |
6767 | break; |
6768 | case SHT_MIPS_GPTAB: | |
0112cd26 | 6769 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 6770 | return FALSE; |
b49e97c9 TS |
6771 | break; |
6772 | case SHT_MIPS_UCODE: | |
6773 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 6774 | return FALSE; |
b49e97c9 TS |
6775 | break; |
6776 | case SHT_MIPS_DEBUG: | |
6777 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 6778 | return FALSE; |
b49e97c9 TS |
6779 | flags = SEC_DEBUGGING; |
6780 | break; | |
6781 | case SHT_MIPS_REGINFO: | |
6782 | if (strcmp (name, ".reginfo") != 0 | |
6783 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 6784 | return FALSE; |
b49e97c9 TS |
6785 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
6786 | break; | |
6787 | case SHT_MIPS_IFACE: | |
6788 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 6789 | return FALSE; |
b49e97c9 TS |
6790 | break; |
6791 | case SHT_MIPS_CONTENT: | |
0112cd26 | 6792 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 6793 | return FALSE; |
b49e97c9 TS |
6794 | break; |
6795 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 6796 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 6797 | return FALSE; |
b49e97c9 TS |
6798 | break; |
6799 | case SHT_MIPS_DWARF: | |
1b315056 | 6800 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 6801 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 6802 | return FALSE; |
b49e97c9 TS |
6803 | break; |
6804 | case SHT_MIPS_SYMBOL_LIB: | |
6805 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 6806 | return FALSE; |
b49e97c9 TS |
6807 | break; |
6808 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
6809 | if (! CONST_STRNEQ (name, ".MIPS.events") |
6810 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 6811 | return FALSE; |
b49e97c9 TS |
6812 | break; |
6813 | default: | |
cc2e31b9 | 6814 | break; |
b49e97c9 TS |
6815 | } |
6816 | ||
6dc132d9 | 6817 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 6818 | return FALSE; |
b49e97c9 TS |
6819 | |
6820 | if (flags) | |
6821 | { | |
6822 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
6823 | (bfd_get_section_flags (abfd, | |
6824 | hdr->bfd_section) | |
6825 | | flags))) | |
b34976b6 | 6826 | return FALSE; |
b49e97c9 TS |
6827 | } |
6828 | ||
6829 | /* FIXME: We should record sh_info for a .gptab section. */ | |
6830 | ||
6831 | /* For a .reginfo section, set the gp value in the tdata information | |
6832 | from the contents of this section. We need the gp value while | |
6833 | processing relocs, so we just get it now. The .reginfo section | |
6834 | is not used in the 64-bit MIPS ELF ABI. */ | |
6835 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
6836 | { | |
6837 | Elf32_External_RegInfo ext; | |
6838 | Elf32_RegInfo s; | |
6839 | ||
9719ad41 RS |
6840 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
6841 | &ext, 0, sizeof ext)) | |
b34976b6 | 6842 | return FALSE; |
b49e97c9 TS |
6843 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
6844 | elf_gp (abfd) = s.ri_gp_value; | |
6845 | } | |
6846 | ||
6847 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
6848 | set the gp value based on what we find. We may see both | |
6849 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
6850 | they should agree. */ | |
6851 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
6852 | { | |
6853 | bfd_byte *contents, *l, *lend; | |
6854 | ||
9719ad41 | 6855 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 6856 | if (contents == NULL) |
b34976b6 | 6857 | return FALSE; |
b49e97c9 | 6858 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 6859 | 0, hdr->sh_size)) |
b49e97c9 TS |
6860 | { |
6861 | free (contents); | |
b34976b6 | 6862 | return FALSE; |
b49e97c9 TS |
6863 | } |
6864 | l = contents; | |
6865 | lend = contents + hdr->sh_size; | |
6866 | while (l + sizeof (Elf_External_Options) <= lend) | |
6867 | { | |
6868 | Elf_Internal_Options intopt; | |
6869 | ||
6870 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
6871 | &intopt); | |
1bc8074d MR |
6872 | if (intopt.size < sizeof (Elf_External_Options)) |
6873 | { | |
6874 | (*_bfd_error_handler) | |
6875 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
6876 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
6877 | break; | |
6878 | } | |
b49e97c9 TS |
6879 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
6880 | { | |
6881 | Elf64_Internal_RegInfo intreg; | |
6882 | ||
6883 | bfd_mips_elf64_swap_reginfo_in | |
6884 | (abfd, | |
6885 | ((Elf64_External_RegInfo *) | |
6886 | (l + sizeof (Elf_External_Options))), | |
6887 | &intreg); | |
6888 | elf_gp (abfd) = intreg.ri_gp_value; | |
6889 | } | |
6890 | else if (intopt.kind == ODK_REGINFO) | |
6891 | { | |
6892 | Elf32_RegInfo intreg; | |
6893 | ||
6894 | bfd_mips_elf32_swap_reginfo_in | |
6895 | (abfd, | |
6896 | ((Elf32_External_RegInfo *) | |
6897 | (l + sizeof (Elf_External_Options))), | |
6898 | &intreg); | |
6899 | elf_gp (abfd) = intreg.ri_gp_value; | |
6900 | } | |
6901 | l += intopt.size; | |
6902 | } | |
6903 | free (contents); | |
6904 | } | |
6905 | ||
b34976b6 | 6906 | return TRUE; |
b49e97c9 TS |
6907 | } |
6908 | ||
6909 | /* Set the correct type for a MIPS ELF section. We do this by the | |
6910 | section name, which is a hack, but ought to work. This routine is | |
6911 | used by both the 32-bit and the 64-bit ABI. */ | |
6912 | ||
b34976b6 | 6913 | bfd_boolean |
9719ad41 | 6914 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 6915 | { |
0414f35b | 6916 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
6917 | |
6918 | if (strcmp (name, ".liblist") == 0) | |
6919 | { | |
6920 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 6921 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
6922 | /* The sh_link field is set in final_write_processing. */ |
6923 | } | |
6924 | else if (strcmp (name, ".conflict") == 0) | |
6925 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 6926 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
6927 | { |
6928 | hdr->sh_type = SHT_MIPS_GPTAB; | |
6929 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
6930 | /* The sh_info field is set in final_write_processing. */ | |
6931 | } | |
6932 | else if (strcmp (name, ".ucode") == 0) | |
6933 | hdr->sh_type = SHT_MIPS_UCODE; | |
6934 | else if (strcmp (name, ".mdebug") == 0) | |
6935 | { | |
6936 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 6937 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
6938 | entsize of 0. FIXME: Does this matter? */ |
6939 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
6940 | hdr->sh_entsize = 0; | |
6941 | else | |
6942 | hdr->sh_entsize = 1; | |
6943 | } | |
6944 | else if (strcmp (name, ".reginfo") == 0) | |
6945 | { | |
6946 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 6947 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
6948 | entsize of 0x18. FIXME: Does this matter? */ |
6949 | if (SGI_COMPAT (abfd)) | |
6950 | { | |
6951 | if ((abfd->flags & DYNAMIC) != 0) | |
6952 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6953 | else | |
6954 | hdr->sh_entsize = 1; | |
6955 | } | |
6956 | else | |
6957 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6958 | } | |
6959 | else if (SGI_COMPAT (abfd) | |
6960 | && (strcmp (name, ".hash") == 0 | |
6961 | || strcmp (name, ".dynamic") == 0 | |
6962 | || strcmp (name, ".dynstr") == 0)) | |
6963 | { | |
6964 | if (SGI_COMPAT (abfd)) | |
6965 | hdr->sh_entsize = 0; | |
6966 | #if 0 | |
8dc1a139 | 6967 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6968 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6969 | #endif | |
6970 | } | |
6971 | else if (strcmp (name, ".got") == 0 | |
6972 | || strcmp (name, ".srdata") == 0 | |
6973 | || strcmp (name, ".sdata") == 0 | |
6974 | || strcmp (name, ".sbss") == 0 | |
6975 | || strcmp (name, ".lit4") == 0 | |
6976 | || strcmp (name, ".lit8") == 0) | |
6977 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6978 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6979 | { | |
6980 | hdr->sh_type = SHT_MIPS_IFACE; | |
6981 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6982 | } | |
0112cd26 | 6983 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6984 | { |
6985 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6986 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6987 | /* The sh_info field is set in final_write_processing. */ | |
6988 | } | |
cc2e31b9 | 6989 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6990 | { |
6991 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6992 | hdr->sh_entsize = 1; | |
6993 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6994 | } | |
1b315056 CS |
6995 | else if (CONST_STRNEQ (name, ".debug_") |
6996 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6997 | { |
6998 | hdr->sh_type = SHT_MIPS_DWARF; | |
6999 | ||
7000 | /* Irix facilities such as libexc expect a single .debug_frame | |
7001 | per executable, the system ones have NOSTRIP set and the linker | |
7002 | doesn't merge sections with different flags so ... */ | |
7003 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
7004 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7005 | } | |
b49e97c9 TS |
7006 | else if (strcmp (name, ".MIPS.symlib") == 0) |
7007 | { | |
7008 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
7009 | /* The sh_link and sh_info fields are set in | |
7010 | final_write_processing. */ | |
7011 | } | |
0112cd26 NC |
7012 | else if (CONST_STRNEQ (name, ".MIPS.events") |
7013 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
7014 | { |
7015 | hdr->sh_type = SHT_MIPS_EVENTS; | |
7016 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7017 | /* The sh_link field is set in final_write_processing. */ | |
7018 | } | |
7019 | else if (strcmp (name, ".msym") == 0) | |
7020 | { | |
7021 | hdr->sh_type = SHT_MIPS_MSYM; | |
7022 | hdr->sh_flags |= SHF_ALLOC; | |
7023 | hdr->sh_entsize = 8; | |
7024 | } | |
7025 | ||
7a79a000 TS |
7026 | /* The generic elf_fake_sections will set up REL_HDR using the default |
7027 | kind of relocations. We used to set up a second header for the | |
7028 | non-default kind of relocations here, but only NewABI would use | |
7029 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
7030 | Thus we create those header only on demand now. */ | |
b49e97c9 | 7031 | |
b34976b6 | 7032 | return TRUE; |
b49e97c9 TS |
7033 | } |
7034 | ||
7035 | /* Given a BFD section, try to locate the corresponding ELF section | |
7036 | index. This is used by both the 32-bit and the 64-bit ABI. | |
7037 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
7038 | but for non-PIC objects we will certainly want support for at least | |
7039 | the .scommon section. */ | |
7040 | ||
b34976b6 | 7041 | bfd_boolean |
9719ad41 RS |
7042 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
7043 | asection *sec, int *retval) | |
b49e97c9 TS |
7044 | { |
7045 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
7046 | { | |
7047 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 7048 | return TRUE; |
b49e97c9 TS |
7049 | } |
7050 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
7051 | { | |
7052 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 7053 | return TRUE; |
b49e97c9 | 7054 | } |
b34976b6 | 7055 | return FALSE; |
b49e97c9 TS |
7056 | } |
7057 | \f | |
7058 | /* Hook called by the linker routine which adds symbols from an object | |
7059 | file. We must handle the special MIPS section numbers here. */ | |
7060 | ||
b34976b6 | 7061 | bfd_boolean |
9719ad41 | 7062 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 7063 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
7064 | flagword *flagsp ATTRIBUTE_UNUSED, |
7065 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
7066 | { |
7067 | if (SGI_COMPAT (abfd) | |
7068 | && (abfd->flags & DYNAMIC) != 0 | |
7069 | && strcmp (*namep, "_rld_new_interface") == 0) | |
7070 | { | |
8dc1a139 | 7071 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 7072 | *namep = NULL; |
b34976b6 | 7073 | return TRUE; |
b49e97c9 TS |
7074 | } |
7075 | ||
eedecc07 DD |
7076 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
7077 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7078 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7079 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7080 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7081 | is not done for them. */ | |
7082 | if (!NEWABI_P(abfd) | |
7083 | && (sym->st_shndx == SHN_ABS) | |
7084 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7085 | { | |
7086 | *namep = NULL; | |
7087 | return TRUE; | |
7088 | } | |
7089 | ||
b49e97c9 TS |
7090 | switch (sym->st_shndx) |
7091 | { | |
7092 | case SHN_COMMON: | |
7093 | /* Common symbols less than the GP size are automatically | |
7094 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7095 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7096 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7097 | || IRIX_COMPAT (abfd) == ict_irix6) |
7098 | break; | |
7099 | /* Fall through. */ | |
7100 | case SHN_MIPS_SCOMMON: | |
7101 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
7102 | (*secp)->flags |= SEC_IS_COMMON; | |
7103 | *valp = sym->st_size; | |
7104 | break; | |
7105 | ||
7106 | case SHN_MIPS_TEXT: | |
7107 | /* This section is used in a shared object. */ | |
7108 | if (elf_tdata (abfd)->elf_text_section == NULL) | |
7109 | { | |
7110 | asymbol *elf_text_symbol; | |
7111 | asection *elf_text_section; | |
7112 | bfd_size_type amt = sizeof (asection); | |
7113 | ||
7114 | elf_text_section = bfd_zalloc (abfd, amt); | |
7115 | if (elf_text_section == NULL) | |
b34976b6 | 7116 | return FALSE; |
b49e97c9 TS |
7117 | |
7118 | amt = sizeof (asymbol); | |
7119 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7120 | if (elf_text_symbol == NULL) | |
b34976b6 | 7121 | return FALSE; |
b49e97c9 TS |
7122 | |
7123 | /* Initialize the section. */ | |
7124 | ||
7125 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
7126 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
7127 | ||
7128 | elf_text_section->symbol = elf_text_symbol; | |
7129 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
7130 | ||
7131 | elf_text_section->name = ".text"; | |
7132 | elf_text_section->flags = SEC_NO_FLAGS; | |
7133 | elf_text_section->output_section = NULL; | |
7134 | elf_text_section->owner = abfd; | |
7135 | elf_text_symbol->name = ".text"; | |
7136 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7137 | elf_text_symbol->section = elf_text_section; | |
7138 | } | |
7139 | /* This code used to do *secp = bfd_und_section_ptr if | |
7140 | info->shared. I don't know why, and that doesn't make sense, | |
7141 | so I took it out. */ | |
7142 | *secp = elf_tdata (abfd)->elf_text_section; | |
7143 | break; | |
7144 | ||
7145 | case SHN_MIPS_ACOMMON: | |
7146 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7147 | case SHN_MIPS_DATA: | |
7148 | /* This section is used in a shared object. */ | |
7149 | if (elf_tdata (abfd)->elf_data_section == NULL) | |
7150 | { | |
7151 | asymbol *elf_data_symbol; | |
7152 | asection *elf_data_section; | |
7153 | bfd_size_type amt = sizeof (asection); | |
7154 | ||
7155 | elf_data_section = bfd_zalloc (abfd, amt); | |
7156 | if (elf_data_section == NULL) | |
b34976b6 | 7157 | return FALSE; |
b49e97c9 TS |
7158 | |
7159 | amt = sizeof (asymbol); | |
7160 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7161 | if (elf_data_symbol == NULL) | |
b34976b6 | 7162 | return FALSE; |
b49e97c9 TS |
7163 | |
7164 | /* Initialize the section. */ | |
7165 | ||
7166 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
7167 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
7168 | ||
7169 | elf_data_section->symbol = elf_data_symbol; | |
7170 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
7171 | ||
7172 | elf_data_section->name = ".data"; | |
7173 | elf_data_section->flags = SEC_NO_FLAGS; | |
7174 | elf_data_section->output_section = NULL; | |
7175 | elf_data_section->owner = abfd; | |
7176 | elf_data_symbol->name = ".data"; | |
7177 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7178 | elf_data_symbol->section = elf_data_section; | |
7179 | } | |
7180 | /* This code used to do *secp = bfd_und_section_ptr if | |
7181 | info->shared. I don't know why, and that doesn't make sense, | |
7182 | so I took it out. */ | |
7183 | *secp = elf_tdata (abfd)->elf_data_section; | |
7184 | break; | |
7185 | ||
7186 | case SHN_MIPS_SUNDEFINED: | |
7187 | *secp = bfd_und_section_ptr; | |
7188 | break; | |
7189 | } | |
7190 | ||
7191 | if (SGI_COMPAT (abfd) | |
7192 | && ! info->shared | |
f13a99db | 7193 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7194 | && strcmp (*namep, "__rld_obj_head") == 0) |
7195 | { | |
7196 | struct elf_link_hash_entry *h; | |
14a793b2 | 7197 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7198 | |
7199 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7200 | bh = NULL; |
b49e97c9 | 7201 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 7202 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 7203 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 7204 | return FALSE; |
14a793b2 AM |
7205 | |
7206 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7207 | h->non_elf = 0; |
7208 | h->def_regular = 1; | |
b49e97c9 TS |
7209 | h->type = STT_OBJECT; |
7210 | ||
c152c796 | 7211 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7212 | return FALSE; |
b49e97c9 | 7213 | |
b34976b6 | 7214 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b4082c70 | 7215 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7216 | } |
7217 | ||
7218 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7219 | odd. This will cause something like .word SYM to come up with | |
7220 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7221 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7222 | ++*valp; |
7223 | ||
b34976b6 | 7224 | return TRUE; |
b49e97c9 TS |
7225 | } |
7226 | ||
7227 | /* This hook function is called before the linker writes out a global | |
7228 | symbol. We mark symbols as small common if appropriate. This is | |
7229 | also where we undo the increment of the value for a mips16 symbol. */ | |
7230 | ||
6e0b88f1 | 7231 | int |
9719ad41 RS |
7232 | _bfd_mips_elf_link_output_symbol_hook |
7233 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7234 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7235 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7236 | { |
7237 | /* If we see a common symbol, which implies a relocatable link, then | |
7238 | if a symbol was small common in an input file, mark it as small | |
7239 | common in the output file. */ | |
7240 | if (sym->st_shndx == SHN_COMMON | |
7241 | && strcmp (input_sec->name, ".scommon") == 0) | |
7242 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7243 | ||
df58fc94 | 7244 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7245 | sym->st_value &= ~1; |
b49e97c9 | 7246 | |
6e0b88f1 | 7247 | return 1; |
b49e97c9 TS |
7248 | } |
7249 | \f | |
7250 | /* Functions for the dynamic linker. */ | |
7251 | ||
7252 | /* Create dynamic sections when linking against a dynamic object. */ | |
7253 | ||
b34976b6 | 7254 | bfd_boolean |
9719ad41 | 7255 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
7256 | { |
7257 | struct elf_link_hash_entry *h; | |
14a793b2 | 7258 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7259 | flagword flags; |
7260 | register asection *s; | |
7261 | const char * const *namep; | |
0a44bf69 | 7262 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7263 | |
0a44bf69 | 7264 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7265 | BFD_ASSERT (htab != NULL); |
7266 | ||
b49e97c9 TS |
7267 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
7268 | | SEC_LINKER_CREATED | SEC_READONLY); | |
7269 | ||
0a44bf69 RS |
7270 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
7271 | EABI doesn't. */ | |
7272 | if (!htab->is_vxworks) | |
b49e97c9 | 7273 | { |
3d4d4302 | 7274 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
7275 | if (s != NULL) |
7276 | { | |
7277 | if (! bfd_set_section_flags (abfd, s, flags)) | |
7278 | return FALSE; | |
7279 | } | |
b49e97c9 TS |
7280 | } |
7281 | ||
7282 | /* We need to create .got section. */ | |
23cc69b6 | 7283 | if (!mips_elf_create_got_section (abfd, info)) |
f4416af6 AO |
7284 | return FALSE; |
7285 | ||
0a44bf69 | 7286 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 7287 | return FALSE; |
b49e97c9 | 7288 | |
b49e97c9 | 7289 | /* Create .stub section. */ |
3d4d4302 AM |
7290 | s = bfd_make_section_anyway_with_flags (abfd, |
7291 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
7292 | flags | SEC_CODE); | |
4e41d0d7 RS |
7293 | if (s == NULL |
7294 | || ! bfd_set_section_alignment (abfd, s, | |
7295 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
7296 | return FALSE; | |
7297 | htab->sstubs = s; | |
b49e97c9 | 7298 | |
e6aea42d | 7299 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
b49e97c9 | 7300 | && !info->shared |
3d4d4302 | 7301 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 7302 | { |
3d4d4302 AM |
7303 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
7304 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 7305 | if (s == NULL |
b49e97c9 TS |
7306 | || ! bfd_set_section_alignment (abfd, s, |
7307 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 7308 | return FALSE; |
b49e97c9 TS |
7309 | } |
7310 | ||
7311 | /* On IRIX5, we adjust add some additional symbols and change the | |
7312 | alignments of several sections. There is no ABI documentation | |
7313 | indicating that this is necessary on IRIX6, nor any evidence that | |
7314 | the linker takes such action. */ | |
7315 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
7316 | { | |
7317 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
7318 | { | |
14a793b2 | 7319 | bh = NULL; |
b49e97c9 | 7320 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
7321 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
7322 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7323 | return FALSE; |
14a793b2 AM |
7324 | |
7325 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7326 | h->non_elf = 0; |
7327 | h->def_regular = 1; | |
b49e97c9 TS |
7328 | h->type = STT_SECTION; |
7329 | ||
c152c796 | 7330 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7331 | return FALSE; |
b49e97c9 TS |
7332 | } |
7333 | ||
7334 | /* We need to create a .compact_rel section. */ | |
7335 | if (SGI_COMPAT (abfd)) | |
7336 | { | |
7337 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 7338 | return FALSE; |
b49e97c9 TS |
7339 | } |
7340 | ||
44c410de | 7341 | /* Change alignments of some sections. */ |
3d4d4302 | 7342 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 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, ".dynsym"); |
b49e97c9 | 7346 | if (s != NULL) |
d80dcc6a | 7347 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7348 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 7349 | if (s != NULL) |
d80dcc6a | 7350 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7351 | /* ??? */ |
b49e97c9 TS |
7352 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
7353 | if (s != NULL) | |
d80dcc6a | 7354 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
3d4d4302 | 7355 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 7356 | if (s != NULL) |
d80dcc6a | 7357 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
7358 | } |
7359 | ||
7360 | if (!info->shared) | |
7361 | { | |
14a793b2 AM |
7362 | const char *name; |
7363 | ||
7364 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
7365 | bh = NULL; | |
7366 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
7367 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
7368 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 7369 | return FALSE; |
14a793b2 AM |
7370 | |
7371 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7372 | h->non_elf = 0; |
7373 | h->def_regular = 1; | |
b49e97c9 TS |
7374 | h->type = STT_SECTION; |
7375 | ||
c152c796 | 7376 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7377 | return FALSE; |
b49e97c9 TS |
7378 | |
7379 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
7380 | { | |
7381 | /* __rld_map is a four byte word located in the .data section | |
7382 | and is filled in by the rtld to contain a pointer to | |
7383 | the _r_debug structure. Its symbol value will be set in | |
7384 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 7385 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 7386 | BFD_ASSERT (s != NULL); |
14a793b2 | 7387 | |
0abfb97a L |
7388 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
7389 | bh = NULL; | |
7390 | if (!(_bfd_generic_link_add_one_symbol | |
7391 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, | |
7392 | get_elf_backend_data (abfd)->collect, &bh))) | |
7393 | return FALSE; | |
b49e97c9 | 7394 | |
0abfb97a L |
7395 | h = (struct elf_link_hash_entry *) bh; |
7396 | h->non_elf = 0; | |
7397 | h->def_regular = 1; | |
7398 | h->type = STT_OBJECT; | |
7399 | ||
7400 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7401 | return FALSE; | |
b4082c70 | 7402 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7403 | } |
7404 | } | |
7405 | ||
861fb55a DJ |
7406 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
7407 | Also create the _PROCEDURE_LINKAGE_TABLE symbol. */ | |
7408 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) | |
7409 | return FALSE; | |
7410 | ||
7411 | /* Cache the sections created above. */ | |
3d4d4302 AM |
7412 | htab->splt = bfd_get_linker_section (abfd, ".plt"); |
7413 | htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss"); | |
0a44bf69 RS |
7414 | if (htab->is_vxworks) |
7415 | { | |
3d4d4302 AM |
7416 | htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss"); |
7417 | htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt"); | |
861fb55a DJ |
7418 | } |
7419 | else | |
3d4d4302 | 7420 | htab->srelplt = bfd_get_linker_section (abfd, ".rel.plt"); |
861fb55a DJ |
7421 | if (!htab->sdynbss |
7422 | || (htab->is_vxworks && !htab->srelbss && !info->shared) | |
7423 | || !htab->srelplt | |
7424 | || !htab->splt) | |
7425 | abort (); | |
0a44bf69 | 7426 | |
861fb55a DJ |
7427 | if (htab->is_vxworks) |
7428 | { | |
0a44bf69 RS |
7429 | /* Do the usual VxWorks handling. */ |
7430 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
7431 | return FALSE; | |
7432 | ||
7433 | /* Work out the PLT sizes. */ | |
7434 | if (info->shared) | |
7435 | { | |
7436 | htab->plt_header_size | |
7437 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
7438 | htab->plt_entry_size | |
7439 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
7440 | } | |
7441 | else | |
7442 | { | |
7443 | htab->plt_header_size | |
7444 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
7445 | htab->plt_entry_size | |
7446 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
7447 | } | |
7448 | } | |
861fb55a DJ |
7449 | else if (!info->shared) |
7450 | { | |
7451 | /* All variants of the plt0 entry are the same size. */ | |
7452 | htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
7453 | htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
7454 | } | |
0a44bf69 | 7455 | |
b34976b6 | 7456 | return TRUE; |
b49e97c9 TS |
7457 | } |
7458 | \f | |
c224138d RS |
7459 | /* Return true if relocation REL against section SEC is a REL rather than |
7460 | RELA relocation. RELOCS is the first relocation in the section and | |
7461 | ABFD is the bfd that contains SEC. */ | |
7462 | ||
7463 | static bfd_boolean | |
7464 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
7465 | const Elf_Internal_Rela *relocs, | |
7466 | const Elf_Internal_Rela *rel) | |
7467 | { | |
7468 | Elf_Internal_Shdr *rel_hdr; | |
7469 | const struct elf_backend_data *bed; | |
7470 | ||
d4730f92 BS |
7471 | /* To determine which flavor of relocation this is, we depend on the |
7472 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
7473 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
7474 | if (rel_hdr == NULL) | |
7475 | return FALSE; | |
c224138d | 7476 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
7477 | return ((size_t) (rel - relocs) |
7478 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
7479 | } |
7480 | ||
7481 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
7482 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
7483 | of the section that REL is against. */ | |
7484 | ||
7485 | static bfd_vma | |
7486 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
7487 | reloc_howto_type *howto, bfd_byte *contents) | |
7488 | { | |
7489 | bfd_byte *location; | |
7490 | unsigned int r_type; | |
7491 | bfd_vma addend; | |
7492 | ||
7493 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7494 | location = contents + rel->r_offset; | |
7495 | ||
7496 | /* Get the addend, which is stored in the input file. */ | |
df58fc94 | 7497 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, FALSE, location); |
c224138d | 7498 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); |
df58fc94 | 7499 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, FALSE, location); |
c224138d RS |
7500 | |
7501 | return addend & howto->src_mask; | |
7502 | } | |
7503 | ||
7504 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
7505 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
7506 | and update *ADDEND with the final addend. Return true on success | |
7507 | or false if the LO16 could not be found. RELEND is the exclusive | |
7508 | upper bound on the relocations for REL's section. */ | |
7509 | ||
7510 | static bfd_boolean | |
7511 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
7512 | const Elf_Internal_Rela *rel, | |
7513 | const Elf_Internal_Rela *relend, | |
7514 | bfd_byte *contents, bfd_vma *addend) | |
7515 | { | |
7516 | unsigned int r_type, lo16_type; | |
7517 | const Elf_Internal_Rela *lo16_relocation; | |
7518 | reloc_howto_type *lo16_howto; | |
7519 | bfd_vma l; | |
7520 | ||
7521 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 7522 | if (mips16_reloc_p (r_type)) |
c224138d | 7523 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
7524 | else if (micromips_reloc_p (r_type)) |
7525 | lo16_type = R_MICROMIPS_LO16; | |
c224138d RS |
7526 | else |
7527 | lo16_type = R_MIPS_LO16; | |
7528 | ||
7529 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
7530 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
7531 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
7532 | LO16 value.) | |
7533 | ||
7534 | Scan ahead to find a matching LO16 relocation. | |
7535 | ||
7536 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
7537 | be immediately following. However, for the IRIX6 ABI, the next | |
7538 | relocation may be a composed relocation consisting of several | |
7539 | relocations for the same address. In that case, the R_MIPS_LO16 | |
7540 | relocation may occur as one of these. We permit a similar | |
7541 | extension in general, as that is useful for GCC. | |
7542 | ||
7543 | In some cases GCC dead code elimination removes the LO16 but keeps | |
7544 | the corresponding HI16. This is strictly speaking a violation of | |
7545 | the ABI but not immediately harmful. */ | |
7546 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
7547 | if (lo16_relocation == NULL) | |
7548 | return FALSE; | |
7549 | ||
7550 | /* Obtain the addend kept there. */ | |
7551 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
7552 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
7553 | ||
7554 | l <<= lo16_howto->rightshift; | |
7555 | l = _bfd_mips_elf_sign_extend (l, 16); | |
7556 | ||
7557 | *addend <<= 16; | |
7558 | *addend += l; | |
7559 | return TRUE; | |
7560 | } | |
7561 | ||
7562 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
7563 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
7564 | already holds the contents if it is nonull on entry. */ | |
7565 | ||
7566 | static bfd_boolean | |
7567 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
7568 | { | |
7569 | if (*contents) | |
7570 | return TRUE; | |
7571 | ||
7572 | /* Get cached copy if it exists. */ | |
7573 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7574 | { | |
7575 | *contents = elf_section_data (sec)->this_hdr.contents; | |
7576 | return TRUE; | |
7577 | } | |
7578 | ||
7579 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
7580 | } | |
7581 | ||
b49e97c9 TS |
7582 | /* Look through the relocs for a section during the first phase, and |
7583 | allocate space in the global offset table. */ | |
7584 | ||
b34976b6 | 7585 | bfd_boolean |
9719ad41 RS |
7586 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7587 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
7588 | { |
7589 | const char *name; | |
7590 | bfd *dynobj; | |
7591 | Elf_Internal_Shdr *symtab_hdr; | |
7592 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
7593 | size_t extsymoff; |
7594 | const Elf_Internal_Rela *rel; | |
7595 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 7596 | asection *sreloc; |
9c5bfbb7 | 7597 | const struct elf_backend_data *bed; |
0a44bf69 | 7598 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
7599 | bfd_byte *contents; |
7600 | bfd_vma addend; | |
7601 | reloc_howto_type *howto; | |
b49e97c9 | 7602 | |
1049f94e | 7603 | if (info->relocatable) |
b34976b6 | 7604 | return TRUE; |
b49e97c9 | 7605 | |
0a44bf69 | 7606 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
7607 | BFD_ASSERT (htab != NULL); |
7608 | ||
b49e97c9 TS |
7609 | dynobj = elf_hash_table (info)->dynobj; |
7610 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7611 | sym_hashes = elf_sym_hashes (abfd); | |
7612 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7613 | ||
738e5348 RS |
7614 | bed = get_elf_backend_data (abfd); |
7615 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
7616 | ||
b49e97c9 TS |
7617 | /* Check for the mips16 stub sections. */ |
7618 | ||
7619 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 7620 | if (FN_STUB_P (name)) |
b49e97c9 TS |
7621 | { |
7622 | unsigned long r_symndx; | |
7623 | ||
7624 | /* Look at the relocation information to figure out which symbol | |
7625 | this is for. */ | |
7626 | ||
cb4437b8 | 7627 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7628 | if (r_symndx == 0) |
7629 | { | |
7630 | (*_bfd_error_handler) | |
7631 | (_("%B: Warning: cannot determine the target function for" | |
7632 | " stub section `%s'"), | |
7633 | abfd, name); | |
7634 | bfd_set_error (bfd_error_bad_value); | |
7635 | return FALSE; | |
7636 | } | |
b49e97c9 TS |
7637 | |
7638 | if (r_symndx < extsymoff | |
7639 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7640 | { | |
7641 | asection *o; | |
7642 | ||
7643 | /* This stub is for a local symbol. This stub will only be | |
7644 | needed if there is some relocation in this BFD, other | |
7645 | than a 16 bit function call, which refers to this symbol. */ | |
7646 | for (o = abfd->sections; o != NULL; o = o->next) | |
7647 | { | |
7648 | Elf_Internal_Rela *sec_relocs; | |
7649 | const Elf_Internal_Rela *r, *rend; | |
7650 | ||
7651 | /* We can ignore stub sections when looking for relocs. */ | |
7652 | if ((o->flags & SEC_RELOC) == 0 | |
7653 | || o->reloc_count == 0 | |
738e5348 | 7654 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
7655 | continue; |
7656 | ||
45d6a902 | 7657 | sec_relocs |
9719ad41 | 7658 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 7659 | info->keep_memory); |
b49e97c9 | 7660 | if (sec_relocs == NULL) |
b34976b6 | 7661 | return FALSE; |
b49e97c9 TS |
7662 | |
7663 | rend = sec_relocs + o->reloc_count; | |
7664 | for (r = sec_relocs; r < rend; r++) | |
7665 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 7666 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
7667 | break; |
7668 | ||
6cdc0ccc | 7669 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
7670 | free (sec_relocs); |
7671 | ||
7672 | if (r < rend) | |
7673 | break; | |
7674 | } | |
7675 | ||
7676 | if (o == NULL) | |
7677 | { | |
7678 | /* There is no non-call reloc for this stub, so we do | |
7679 | not need it. Since this function is called before | |
7680 | the linker maps input sections to output sections, we | |
7681 | can easily discard it by setting the SEC_EXCLUDE | |
7682 | flag. */ | |
7683 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 7684 | return TRUE; |
b49e97c9 TS |
7685 | } |
7686 | ||
7687 | /* Record this stub in an array of local symbol stubs for | |
7688 | this BFD. */ | |
7689 | if (elf_tdata (abfd)->local_stubs == NULL) | |
7690 | { | |
7691 | unsigned long symcount; | |
7692 | asection **n; | |
7693 | bfd_size_type amt; | |
7694 | ||
7695 | if (elf_bad_symtab (abfd)) | |
7696 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7697 | else | |
7698 | symcount = symtab_hdr->sh_info; | |
7699 | amt = symcount * sizeof (asection *); | |
9719ad41 | 7700 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 7701 | if (n == NULL) |
b34976b6 | 7702 | return FALSE; |
b49e97c9 TS |
7703 | elf_tdata (abfd)->local_stubs = n; |
7704 | } | |
7705 | ||
b9d58d71 | 7706 | sec->flags |= SEC_KEEP; |
b49e97c9 TS |
7707 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
7708 | ||
7709 | /* We don't need to set mips16_stubs_seen in this case. | |
7710 | That flag is used to see whether we need to look through | |
7711 | the global symbol table for stubs. We don't need to set | |
7712 | it here, because we just have a local stub. */ | |
7713 | } | |
7714 | else | |
7715 | { | |
7716 | struct mips_elf_link_hash_entry *h; | |
7717 | ||
7718 | h = ((struct mips_elf_link_hash_entry *) | |
7719 | sym_hashes[r_symndx - extsymoff]); | |
7720 | ||
973a3492 L |
7721 | while (h->root.root.type == bfd_link_hash_indirect |
7722 | || h->root.root.type == bfd_link_hash_warning) | |
7723 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
7724 | ||
b49e97c9 TS |
7725 | /* H is the symbol this stub is for. */ |
7726 | ||
b9d58d71 TS |
7727 | /* If we already have an appropriate stub for this function, we |
7728 | don't need another one, so we can discard this one. Since | |
7729 | this function is called before the linker maps input sections | |
7730 | to output sections, we can easily discard it by setting the | |
7731 | SEC_EXCLUDE flag. */ | |
7732 | if (h->fn_stub != NULL) | |
7733 | { | |
7734 | sec->flags |= SEC_EXCLUDE; | |
7735 | return TRUE; | |
7736 | } | |
7737 | ||
7738 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 7739 | h->fn_stub = sec; |
b34976b6 | 7740 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
7741 | } |
7742 | } | |
b9d58d71 | 7743 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
7744 | { |
7745 | unsigned long r_symndx; | |
7746 | struct mips_elf_link_hash_entry *h; | |
7747 | asection **loc; | |
7748 | ||
7749 | /* Look at the relocation information to figure out which symbol | |
7750 | this is for. */ | |
7751 | ||
cb4437b8 | 7752 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
7753 | if (r_symndx == 0) |
7754 | { | |
7755 | (*_bfd_error_handler) | |
7756 | (_("%B: Warning: cannot determine the target function for" | |
7757 | " stub section `%s'"), | |
7758 | abfd, name); | |
7759 | bfd_set_error (bfd_error_bad_value); | |
7760 | return FALSE; | |
7761 | } | |
b49e97c9 TS |
7762 | |
7763 | if (r_symndx < extsymoff | |
7764 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
7765 | { | |
b9d58d71 | 7766 | asection *o; |
b49e97c9 | 7767 | |
b9d58d71 TS |
7768 | /* This stub is for a local symbol. This stub will only be |
7769 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
7770 | that refers to this symbol. */ | |
7771 | for (o = abfd->sections; o != NULL; o = o->next) | |
7772 | { | |
7773 | Elf_Internal_Rela *sec_relocs; | |
7774 | const Elf_Internal_Rela *r, *rend; | |
7775 | ||
7776 | /* We can ignore stub sections when looking for relocs. */ | |
7777 | if ((o->flags & SEC_RELOC) == 0 | |
7778 | || o->reloc_count == 0 | |
738e5348 | 7779 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
7780 | continue; |
7781 | ||
7782 | sec_relocs | |
7783 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
7784 | info->keep_memory); | |
7785 | if (sec_relocs == NULL) | |
7786 | return FALSE; | |
7787 | ||
7788 | rend = sec_relocs + o->reloc_count; | |
7789 | for (r = sec_relocs; r < rend; r++) | |
7790 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
7791 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
7792 | break; | |
7793 | ||
7794 | if (elf_section_data (o)->relocs != sec_relocs) | |
7795 | free (sec_relocs); | |
7796 | ||
7797 | if (r < rend) | |
7798 | break; | |
7799 | } | |
7800 | ||
7801 | if (o == NULL) | |
7802 | { | |
7803 | /* There is no non-call reloc for this stub, so we do | |
7804 | not need it. Since this function is called before | |
7805 | the linker maps input sections to output sections, we | |
7806 | can easily discard it by setting the SEC_EXCLUDE | |
7807 | flag. */ | |
7808 | sec->flags |= SEC_EXCLUDE; | |
7809 | return TRUE; | |
7810 | } | |
7811 | ||
7812 | /* Record this stub in an array of local symbol call_stubs for | |
7813 | this BFD. */ | |
7814 | if (elf_tdata (abfd)->local_call_stubs == NULL) | |
7815 | { | |
7816 | unsigned long symcount; | |
7817 | asection **n; | |
7818 | bfd_size_type amt; | |
7819 | ||
7820 | if (elf_bad_symtab (abfd)) | |
7821 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
7822 | else | |
7823 | symcount = symtab_hdr->sh_info; | |
7824 | amt = symcount * sizeof (asection *); | |
7825 | n = bfd_zalloc (abfd, amt); | |
7826 | if (n == NULL) | |
7827 | return FALSE; | |
7828 | elf_tdata (abfd)->local_call_stubs = n; | |
7829 | } | |
b49e97c9 | 7830 | |
b9d58d71 TS |
7831 | sec->flags |= SEC_KEEP; |
7832 | elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; | |
b49e97c9 | 7833 | |
b9d58d71 TS |
7834 | /* We don't need to set mips16_stubs_seen in this case. |
7835 | That flag is used to see whether we need to look through | |
7836 | the global symbol table for stubs. We don't need to set | |
7837 | it here, because we just have a local stub. */ | |
7838 | } | |
b49e97c9 | 7839 | else |
b49e97c9 | 7840 | { |
b9d58d71 TS |
7841 | h = ((struct mips_elf_link_hash_entry *) |
7842 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 7843 | |
b9d58d71 | 7844 | /* H is the symbol this stub is for. */ |
68ffbac6 | 7845 | |
b9d58d71 TS |
7846 | if (CALL_FP_STUB_P (name)) |
7847 | loc = &h->call_fp_stub; | |
7848 | else | |
7849 | loc = &h->call_stub; | |
68ffbac6 | 7850 | |
b9d58d71 TS |
7851 | /* If we already have an appropriate stub for this function, we |
7852 | don't need another one, so we can discard this one. Since | |
7853 | this function is called before the linker maps input sections | |
7854 | to output sections, we can easily discard it by setting the | |
7855 | SEC_EXCLUDE flag. */ | |
7856 | if (*loc != NULL) | |
7857 | { | |
7858 | sec->flags |= SEC_EXCLUDE; | |
7859 | return TRUE; | |
7860 | } | |
b49e97c9 | 7861 | |
b9d58d71 TS |
7862 | sec->flags |= SEC_KEEP; |
7863 | *loc = sec; | |
7864 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
7865 | } | |
b49e97c9 TS |
7866 | } |
7867 | ||
b49e97c9 | 7868 | sreloc = NULL; |
c224138d | 7869 | contents = NULL; |
b49e97c9 TS |
7870 | for (rel = relocs; rel < rel_end; ++rel) |
7871 | { | |
7872 | unsigned long r_symndx; | |
7873 | unsigned int r_type; | |
7874 | struct elf_link_hash_entry *h; | |
861fb55a | 7875 | bfd_boolean can_make_dynamic_p; |
b49e97c9 TS |
7876 | |
7877 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
7878 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
7879 | ||
7880 | if (r_symndx < extsymoff) | |
7881 | h = NULL; | |
7882 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
7883 | { | |
7884 | (*_bfd_error_handler) | |
d003868e AM |
7885 | (_("%B: Malformed reloc detected for section %s"), |
7886 | abfd, name); | |
b49e97c9 | 7887 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7888 | return FALSE; |
b49e97c9 TS |
7889 | } |
7890 | else | |
7891 | { | |
7892 | h = sym_hashes[r_symndx - extsymoff]; | |
3e08fb72 NC |
7893 | while (h != NULL |
7894 | && (h->root.type == bfd_link_hash_indirect | |
7895 | || h->root.type == bfd_link_hash_warning)) | |
861fb55a DJ |
7896 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
7897 | } | |
b49e97c9 | 7898 | |
861fb55a DJ |
7899 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
7900 | relocation into a dynamic one. */ | |
7901 | can_make_dynamic_p = FALSE; | |
7902 | switch (r_type) | |
7903 | { | |
861fb55a DJ |
7904 | case R_MIPS_GOT16: |
7905 | case R_MIPS_CALL16: | |
7906 | case R_MIPS_CALL_HI16: | |
7907 | case R_MIPS_CALL_LO16: | |
7908 | case R_MIPS_GOT_HI16: | |
7909 | case R_MIPS_GOT_LO16: | |
7910 | case R_MIPS_GOT_PAGE: | |
7911 | case R_MIPS_GOT_OFST: | |
7912 | case R_MIPS_GOT_DISP: | |
7913 | case R_MIPS_TLS_GOTTPREL: | |
7914 | case R_MIPS_TLS_GD: | |
7915 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
7916 | case R_MIPS16_GOT16: |
7917 | case R_MIPS16_CALL16: | |
7918 | case R_MIPS16_TLS_GOTTPREL: | |
7919 | case R_MIPS16_TLS_GD: | |
7920 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
7921 | case R_MICROMIPS_GOT16: |
7922 | case R_MICROMIPS_CALL16: | |
7923 | case R_MICROMIPS_CALL_HI16: | |
7924 | case R_MICROMIPS_CALL_LO16: | |
7925 | case R_MICROMIPS_GOT_HI16: | |
7926 | case R_MICROMIPS_GOT_LO16: | |
7927 | case R_MICROMIPS_GOT_PAGE: | |
7928 | case R_MICROMIPS_GOT_OFST: | |
7929 | case R_MICROMIPS_GOT_DISP: | |
7930 | case R_MICROMIPS_TLS_GOTTPREL: | |
7931 | case R_MICROMIPS_TLS_GD: | |
7932 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
7933 | if (dynobj == NULL) |
7934 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7935 | if (!mips_elf_create_got_section (dynobj, info)) | |
7936 | return FALSE; | |
7937 | if (htab->is_vxworks && !info->shared) | |
b49e97c9 | 7938 | { |
861fb55a DJ |
7939 | (*_bfd_error_handler) |
7940 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
7941 | abfd, (unsigned long) rel->r_offset); | |
7942 | bfd_set_error (bfd_error_bad_value); | |
7943 | return FALSE; | |
b49e97c9 | 7944 | } |
861fb55a | 7945 | break; |
b49e97c9 | 7946 | |
99da6b5f AN |
7947 | /* This is just a hint; it can safely be ignored. Don't set |
7948 | has_static_relocs for the corresponding symbol. */ | |
7949 | case R_MIPS_JALR: | |
df58fc94 | 7950 | case R_MICROMIPS_JALR: |
99da6b5f AN |
7951 | break; |
7952 | ||
861fb55a DJ |
7953 | case R_MIPS_32: |
7954 | case R_MIPS_REL32: | |
7955 | case R_MIPS_64: | |
7956 | /* In VxWorks executables, references to external symbols | |
7957 | must be handled using copy relocs or PLT entries; it is not | |
7958 | possible to convert this relocation into a dynamic one. | |
7959 | ||
7960 | For executables that use PLTs and copy-relocs, we have a | |
7961 | choice between converting the relocation into a dynamic | |
7962 | one or using copy relocations or PLT entries. It is | |
7963 | usually better to do the former, unless the relocation is | |
7964 | against a read-only section. */ | |
7965 | if ((info->shared | |
7966 | || (h != NULL | |
7967 | && !htab->is_vxworks | |
7968 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 | |
7969 | && !(!info->nocopyreloc | |
7970 | && !PIC_OBJECT_P (abfd) | |
7971 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
7972 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 7973 | { |
861fb55a | 7974 | can_make_dynamic_p = TRUE; |
b49e97c9 TS |
7975 | if (dynobj == NULL) |
7976 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
b49e97c9 | 7977 | break; |
861fb55a | 7978 | } |
21d790b9 MR |
7979 | /* For sections that are not SEC_ALLOC a copy reloc would be |
7980 | output if possible (implying questionable semantics for | |
7981 | read-only data objects) or otherwise the final link would | |
7982 | fail as ld.so will not process them and could not therefore | |
7983 | handle any outstanding dynamic relocations. | |
7984 | ||
7985 | For such sections that are also SEC_DEBUGGING, we can avoid | |
7986 | these problems by simply ignoring any relocs as these | |
7987 | sections have a predefined use and we know it is safe to do | |
7988 | so. | |
7989 | ||
7990 | This is needed in cases such as a global symbol definition | |
7991 | in a shared library causing a common symbol from an object | |
7992 | file to be converted to an undefined reference. If that | |
7993 | happens, then all the relocations against this symbol from | |
7994 | SEC_DEBUGGING sections in the object file will resolve to | |
7995 | nil. */ | |
7996 | if ((sec->flags & SEC_DEBUGGING) != 0) | |
7997 | break; | |
861fb55a | 7998 | /* Fall through. */ |
b49e97c9 | 7999 | |
861fb55a DJ |
8000 | default: |
8001 | /* Most static relocations require pointer equality, except | |
8002 | for branches. */ | |
8003 | if (h) | |
8004 | h->pointer_equality_needed = TRUE; | |
8005 | /* Fall through. */ | |
b49e97c9 | 8006 | |
861fb55a DJ |
8007 | case R_MIPS_26: |
8008 | case R_MIPS_PC16: | |
8009 | case R_MIPS16_26: | |
df58fc94 RS |
8010 | case R_MICROMIPS_26_S1: |
8011 | case R_MICROMIPS_PC7_S1: | |
8012 | case R_MICROMIPS_PC10_S1: | |
8013 | case R_MICROMIPS_PC16_S1: | |
8014 | case R_MICROMIPS_PC23_S2: | |
861fb55a DJ |
8015 | if (h) |
8016 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE; | |
8017 | break; | |
b49e97c9 TS |
8018 | } |
8019 | ||
0a44bf69 RS |
8020 | if (h) |
8021 | { | |
0a44bf69 RS |
8022 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
8023 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
8024 | room for them in .rela.dyn. */ | |
8025 | if (is_gott_symbol (info, h)) | |
8026 | { | |
8027 | if (sreloc == NULL) | |
8028 | { | |
8029 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
8030 | if (sreloc == NULL) | |
8031 | return FALSE; | |
8032 | } | |
8033 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
8034 | if (MIPS_ELF_READONLY_SECTION (sec)) |
8035 | /* We tell the dynamic linker that there are | |
8036 | relocations against the text segment. */ | |
8037 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
8038 | } |
8039 | } | |
df58fc94 RS |
8040 | else if (call_lo16_reloc_p (r_type) |
8041 | || got_lo16_reloc_p (r_type) | |
8042 | || got_disp_reloc_p (r_type) | |
738e5348 | 8043 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
8044 | { |
8045 | /* We may need a local GOT entry for this relocation. We | |
8046 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
8047 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
8048 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
8049 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 8050 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 8051 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 8052 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 RS |
8053 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
8054 | rel->r_addend, info, 0)) | |
f4416af6 | 8055 | return FALSE; |
b49e97c9 TS |
8056 | } |
8057 | ||
8f0c309a CLT |
8058 | if (h != NULL |
8059 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
8060 | ELF_ST_IS_MIPS16 (h->other))) | |
861fb55a DJ |
8061 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = TRUE; |
8062 | ||
b49e97c9 TS |
8063 | switch (r_type) |
8064 | { | |
8065 | case R_MIPS_CALL16: | |
738e5348 | 8066 | case R_MIPS16_CALL16: |
df58fc94 | 8067 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8068 | if (h == NULL) |
8069 | { | |
8070 | (*_bfd_error_handler) | |
d003868e AM |
8071 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
8072 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 8073 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8074 | return FALSE; |
b49e97c9 TS |
8075 | } |
8076 | /* Fall through. */ | |
8077 | ||
8078 | case R_MIPS_CALL_HI16: | |
8079 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8080 | case R_MICROMIPS_CALL_HI16: |
8081 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8082 | if (h != NULL) |
8083 | { | |
6ccf4795 RS |
8084 | /* Make sure there is room in the regular GOT to hold the |
8085 | function's address. We may eliminate it in favour of | |
8086 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
8087 | if (!mips_elf_record_global_got_symbol (h, abfd, info, TRUE, 0)) | |
b34976b6 | 8088 | return FALSE; |
b49e97c9 TS |
8089 | |
8090 | /* We need a stub, not a plt entry for the undefined | |
8091 | function. But we record it as if it needs plt. See | |
c152c796 | 8092 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8093 | h->needs_plt = 1; |
b49e97c9 TS |
8094 | h->type = STT_FUNC; |
8095 | } | |
8096 | break; | |
8097 | ||
0fdc1bf1 | 8098 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8099 | case R_MICROMIPS_GOT_PAGE: |
0fdc1bf1 AO |
8100 | /* If this is a global, overridable symbol, GOT_PAGE will |
8101 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d | 8102 | if (h) |
0fdc1bf1 AO |
8103 | { |
8104 | struct mips_elf_link_hash_entry *hmips = | |
8105 | (struct mips_elf_link_hash_entry *) h; | |
143d77c5 | 8106 | |
3a3b6725 | 8107 | /* This symbol is definitely not overridable. */ |
f5385ebf | 8108 | if (hmips->root.def_regular |
0fdc1bf1 | 8109 | && ! (info->shared && ! info->symbolic |
f5385ebf | 8110 | && ! hmips->root.forced_local)) |
c224138d | 8111 | h = NULL; |
0fdc1bf1 AO |
8112 | } |
8113 | /* Fall through. */ | |
8114 | ||
738e5348 | 8115 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8116 | case R_MIPS_GOT16: |
8117 | case R_MIPS_GOT_HI16: | |
8118 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8119 | case R_MICROMIPS_GOT16: |
8120 | case R_MICROMIPS_GOT_HI16: | |
8121 | case R_MICROMIPS_GOT_LO16: | |
8122 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8123 | { |
3a3b6725 DJ |
8124 | /* This relocation needs (or may need, if h != NULL) a |
8125 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8126 | know for sure until we know whether the symbol is | |
8127 | preemptible. */ | |
c224138d RS |
8128 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8129 | { | |
8130 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
8131 | return FALSE; | |
8132 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
8133 | addend = mips_elf_read_rel_addend (abfd, rel, | |
8134 | howto, contents); | |
9684f078 | 8135 | if (got16_reloc_p (r_type)) |
c224138d RS |
8136 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, |
8137 | contents, &addend); | |
8138 | else | |
8139 | addend <<= howto->rightshift; | |
8140 | } | |
8141 | else | |
8142 | addend = rel->r_addend; | |
a8028dd0 RS |
8143 | if (!mips_elf_record_got_page_entry (info, abfd, r_symndx, |
8144 | addend)) | |
c224138d | 8145 | return FALSE; |
c224138d RS |
8146 | } |
8147 | /* Fall through. */ | |
8148 | ||
b49e97c9 | 8149 | case R_MIPS_GOT_DISP: |
df58fc94 | 8150 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 RS |
8151 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
8152 | FALSE, 0)) | |
b34976b6 | 8153 | return FALSE; |
b49e97c9 TS |
8154 | break; |
8155 | ||
0f20cc35 | 8156 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 8157 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 8158 | case R_MICROMIPS_TLS_GOTTPREL: |
0f20cc35 DJ |
8159 | if (info->shared) |
8160 | info->flags |= DF_STATIC_TLS; | |
8161 | /* Fall through */ | |
8162 | ||
8163 | case R_MIPS_TLS_LDM: | |
d0f13682 | 8164 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
8165 | case R_MICROMIPS_TLS_LDM: |
8166 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 8167 | { |
cf35638d | 8168 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
8169 | h = NULL; |
8170 | } | |
8171 | /* Fall through */ | |
8172 | ||
8173 | case R_MIPS_TLS_GD: | |
d0f13682 | 8174 | case R_MIPS16_TLS_GD: |
df58fc94 | 8175 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
8176 | /* This symbol requires a global offset table entry, or two |
8177 | for TLS GD relocations. */ | |
8178 | { | |
df58fc94 RS |
8179 | unsigned char flag; |
8180 | ||
8181 | flag = (tls_gd_reloc_p (r_type) | |
8182 | ? GOT_TLS_GD | |
8183 | : tls_ldm_reloc_p (r_type) ? GOT_TLS_LDM : GOT_TLS_IE); | |
0f20cc35 DJ |
8184 | if (h != NULL) |
8185 | { | |
8186 | struct mips_elf_link_hash_entry *hmips = | |
8187 | (struct mips_elf_link_hash_entry *) h; | |
8188 | hmips->tls_type |= flag; | |
8189 | ||
6ccf4795 RS |
8190 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
8191 | FALSE, flag)) | |
0f20cc35 DJ |
8192 | return FALSE; |
8193 | } | |
8194 | else | |
8195 | { | |
cf35638d | 8196 | BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != STN_UNDEF); |
0f20cc35 | 8197 | |
a8028dd0 RS |
8198 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
8199 | rel->r_addend, | |
8200 | info, flag)) | |
0f20cc35 DJ |
8201 | return FALSE; |
8202 | } | |
8203 | } | |
8204 | break; | |
8205 | ||
b49e97c9 TS |
8206 | case R_MIPS_32: |
8207 | case R_MIPS_REL32: | |
8208 | case R_MIPS_64: | |
0a44bf69 RS |
8209 | /* In VxWorks executables, references to external symbols |
8210 | are handled using copy relocs or PLT stubs, so there's | |
8211 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 8212 | if (can_make_dynamic_p) |
b49e97c9 TS |
8213 | { |
8214 | if (sreloc == NULL) | |
8215 | { | |
0a44bf69 | 8216 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 8217 | if (sreloc == NULL) |
f4416af6 | 8218 | return FALSE; |
b49e97c9 | 8219 | } |
9a59ad6b | 8220 | if (info->shared && h == NULL) |
82f0cfbd EC |
8221 | { |
8222 | /* When creating a shared object, we must copy these | |
8223 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
8224 | relocs. Make room for this reloc in .rel(a).dyn. */ |
8225 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 8226 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8227 | /* We tell the dynamic linker that there are |
8228 | relocations against the text segment. */ | |
8229 | info->flags |= DF_TEXTREL; | |
8230 | } | |
b49e97c9 TS |
8231 | else |
8232 | { | |
8233 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 8234 | |
9a59ad6b DJ |
8235 | /* For a shared object, we must copy this relocation |
8236 | unless the symbol turns out to be undefined and | |
8237 | weak with non-default visibility, in which case | |
8238 | it will be left as zero. | |
8239 | ||
8240 | We could elide R_MIPS_REL32 for locally binding symbols | |
8241 | in shared libraries, but do not yet do so. | |
8242 | ||
8243 | For an executable, we only need to copy this | |
8244 | reloc if the symbol is defined in a dynamic | |
8245 | object. */ | |
b49e97c9 TS |
8246 | hmips = (struct mips_elf_link_hash_entry *) h; |
8247 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 8248 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
8249 | /* We need it to tell the dynamic linker if there |
8250 | are relocations against the text segment. */ | |
8251 | hmips->readonly_reloc = TRUE; | |
b49e97c9 | 8252 | } |
b49e97c9 TS |
8253 | } |
8254 | ||
8255 | if (SGI_COMPAT (abfd)) | |
8256 | mips_elf_hash_table (info)->compact_rel_size += | |
8257 | sizeof (Elf32_External_crinfo); | |
8258 | break; | |
8259 | ||
8260 | case R_MIPS_26: | |
8261 | case R_MIPS_GPREL16: | |
8262 | case R_MIPS_LITERAL: | |
8263 | case R_MIPS_GPREL32: | |
df58fc94 RS |
8264 | case R_MICROMIPS_26_S1: |
8265 | case R_MICROMIPS_GPREL16: | |
8266 | case R_MICROMIPS_LITERAL: | |
8267 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
8268 | if (SGI_COMPAT (abfd)) |
8269 | mips_elf_hash_table (info)->compact_rel_size += | |
8270 | sizeof (Elf32_External_crinfo); | |
8271 | break; | |
8272 | ||
8273 | /* This relocation describes the C++ object vtable hierarchy. | |
8274 | Reconstruct it for later use during GC. */ | |
8275 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 8276 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 8277 | return FALSE; |
b49e97c9 TS |
8278 | break; |
8279 | ||
8280 | /* This relocation describes which C++ vtable entries are actually | |
8281 | used. Record for later use during GC. */ | |
8282 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
8283 | BFD_ASSERT (h != NULL); |
8284 | if (h != NULL | |
8285 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 8286 | return FALSE; |
b49e97c9 TS |
8287 | break; |
8288 | ||
8289 | default: | |
8290 | break; | |
8291 | } | |
8292 | ||
8293 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
8294 | related to taking the function's address. This doesn't apply to |
8295 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
8296 | a normal .got entry. */ | |
8297 | if (!htab->is_vxworks && h != NULL) | |
8298 | switch (r_type) | |
8299 | { | |
8300 | default: | |
8301 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
8302 | break; | |
738e5348 | 8303 | case R_MIPS16_CALL16: |
0a44bf69 RS |
8304 | case R_MIPS_CALL16: |
8305 | case R_MIPS_CALL_HI16: | |
8306 | case R_MIPS_CALL_LO16: | |
8307 | case R_MIPS_JALR: | |
df58fc94 RS |
8308 | case R_MICROMIPS_CALL16: |
8309 | case R_MICROMIPS_CALL_HI16: | |
8310 | case R_MICROMIPS_CALL_LO16: | |
8311 | case R_MICROMIPS_JALR: | |
0a44bf69 RS |
8312 | break; |
8313 | } | |
b49e97c9 | 8314 | |
738e5348 RS |
8315 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
8316 | if there is one. We only need to handle global symbols here; | |
8317 | we decide whether to keep or delete stubs for local symbols | |
8318 | when processing the stub's relocations. */ | |
b49e97c9 | 8319 | if (h != NULL |
738e5348 RS |
8320 | && !mips16_call_reloc_p (r_type) |
8321 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
8322 | { |
8323 | struct mips_elf_link_hash_entry *mh; | |
8324 | ||
8325 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 8326 | mh->need_fn_stub = TRUE; |
b49e97c9 | 8327 | } |
861fb55a DJ |
8328 | |
8329 | /* Refuse some position-dependent relocations when creating a | |
8330 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
8331 | not PIC, but we can create dynamic relocations and the result | |
8332 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
8333 | combined with R_MIPS_GOT16. */ | |
8334 | if (info->shared) | |
8335 | { | |
8336 | switch (r_type) | |
8337 | { | |
8338 | case R_MIPS16_HI16: | |
8339 | case R_MIPS_HI16: | |
8340 | case R_MIPS_HIGHER: | |
8341 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
8342 | case R_MICROMIPS_HI16: |
8343 | case R_MICROMIPS_HIGHER: | |
8344 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
8345 | /* Don't refuse a high part relocation if it's against |
8346 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 8347 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
8348 | break; |
8349 | ||
8350 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, | |
8351 | and has a special meaning. */ | |
8352 | if (!NEWABI_P (abfd) && h != NULL | |
8353 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
8354 | break; | |
8355 | ||
0fc1eb3c RS |
8356 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
8357 | if (is_gott_symbol (info, h)) | |
8358 | break; | |
8359 | ||
861fb55a DJ |
8360 | /* FALLTHROUGH */ |
8361 | ||
8362 | case R_MIPS16_26: | |
8363 | case R_MIPS_26: | |
df58fc94 | 8364 | case R_MICROMIPS_26_S1: |
861fb55a DJ |
8365 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); |
8366 | (*_bfd_error_handler) | |
8367 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
8368 | abfd, howto->name, | |
8369 | (h) ? h->root.root.string : "a local symbol"); | |
8370 | bfd_set_error (bfd_error_bad_value); | |
8371 | return FALSE; | |
8372 | default: | |
8373 | break; | |
8374 | } | |
8375 | } | |
b49e97c9 TS |
8376 | } |
8377 | ||
b34976b6 | 8378 | return TRUE; |
b49e97c9 TS |
8379 | } |
8380 | \f | |
d0647110 | 8381 | bfd_boolean |
9719ad41 RS |
8382 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
8383 | struct bfd_link_info *link_info, | |
8384 | bfd_boolean *again) | |
d0647110 AO |
8385 | { |
8386 | Elf_Internal_Rela *internal_relocs; | |
8387 | Elf_Internal_Rela *irel, *irelend; | |
8388 | Elf_Internal_Shdr *symtab_hdr; | |
8389 | bfd_byte *contents = NULL; | |
d0647110 AO |
8390 | size_t extsymoff; |
8391 | bfd_boolean changed_contents = FALSE; | |
8392 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
8393 | Elf_Internal_Sym *isymbuf = NULL; | |
8394 | ||
8395 | /* We are not currently changing any sizes, so only one pass. */ | |
8396 | *again = FALSE; | |
8397 | ||
1049f94e | 8398 | if (link_info->relocatable) |
d0647110 AO |
8399 | return TRUE; |
8400 | ||
9719ad41 | 8401 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 8402 | link_info->keep_memory); |
d0647110 AO |
8403 | if (internal_relocs == NULL) |
8404 | return TRUE; | |
8405 | ||
8406 | irelend = internal_relocs + sec->reloc_count | |
8407 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
8408 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8409 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8410 | ||
8411 | for (irel = internal_relocs; irel < irelend; irel++) | |
8412 | { | |
8413 | bfd_vma symval; | |
8414 | bfd_signed_vma sym_offset; | |
8415 | unsigned int r_type; | |
8416 | unsigned long r_symndx; | |
8417 | asection *sym_sec; | |
8418 | unsigned long instruction; | |
8419 | ||
8420 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
8421 | with a JALR relocation, that indicate where they jump to. | |
8422 | This saves some pipeline bubbles. */ | |
8423 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
8424 | if (r_type != R_MIPS_JALR) | |
8425 | continue; | |
8426 | ||
8427 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
8428 | /* Compute the address of the jump target. */ | |
8429 | if (r_symndx >= extsymoff) | |
8430 | { | |
8431 | struct mips_elf_link_hash_entry *h | |
8432 | = ((struct mips_elf_link_hash_entry *) | |
8433 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
8434 | ||
8435 | while (h->root.root.type == bfd_link_hash_indirect | |
8436 | || h->root.root.type == bfd_link_hash_warning) | |
8437 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 8438 | |
d0647110 AO |
8439 | /* If a symbol is undefined, or if it may be overridden, |
8440 | skip it. */ | |
8441 | if (! ((h->root.root.type == bfd_link_hash_defined | |
8442 | || h->root.root.type == bfd_link_hash_defweak) | |
8443 | && h->root.root.u.def.section) | |
8444 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 8445 | && !h->root.forced_local)) |
d0647110 AO |
8446 | continue; |
8447 | ||
8448 | sym_sec = h->root.root.u.def.section; | |
8449 | if (sym_sec->output_section) | |
8450 | symval = (h->root.root.u.def.value | |
8451 | + sym_sec->output_section->vma | |
8452 | + sym_sec->output_offset); | |
8453 | else | |
8454 | symval = h->root.root.u.def.value; | |
8455 | } | |
8456 | else | |
8457 | { | |
8458 | Elf_Internal_Sym *isym; | |
8459 | ||
8460 | /* Read this BFD's symbols if we haven't done so already. */ | |
8461 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
8462 | { | |
8463 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8464 | if (isymbuf == NULL) | |
8465 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8466 | symtab_hdr->sh_info, 0, | |
8467 | NULL, NULL, NULL); | |
8468 | if (isymbuf == NULL) | |
8469 | goto relax_return; | |
8470 | } | |
8471 | ||
8472 | isym = isymbuf + r_symndx; | |
8473 | if (isym->st_shndx == SHN_UNDEF) | |
8474 | continue; | |
8475 | else if (isym->st_shndx == SHN_ABS) | |
8476 | sym_sec = bfd_abs_section_ptr; | |
8477 | else if (isym->st_shndx == SHN_COMMON) | |
8478 | sym_sec = bfd_com_section_ptr; | |
8479 | else | |
8480 | sym_sec | |
8481 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8482 | symval = isym->st_value | |
8483 | + sym_sec->output_section->vma | |
8484 | + sym_sec->output_offset; | |
8485 | } | |
8486 | ||
8487 | /* Compute branch offset, from delay slot of the jump to the | |
8488 | branch target. */ | |
8489 | sym_offset = (symval + irel->r_addend) | |
8490 | - (sec_start + irel->r_offset + 4); | |
8491 | ||
8492 | /* Branch offset must be properly aligned. */ | |
8493 | if ((sym_offset & 3) != 0) | |
8494 | continue; | |
8495 | ||
8496 | sym_offset >>= 2; | |
8497 | ||
8498 | /* Check that it's in range. */ | |
8499 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
8500 | continue; | |
143d77c5 | 8501 | |
d0647110 | 8502 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
8503 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
8504 | goto relax_return; | |
d0647110 AO |
8505 | |
8506 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
8507 | ||
8508 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
8509 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
8510 | instruction = 0x04110000; | |
8511 | /* If it was jr <reg>, turn it into b <target>. */ | |
8512 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
8513 | instruction = 0x10000000; | |
8514 | else | |
8515 | continue; | |
8516 | ||
8517 | instruction |= (sym_offset & 0xffff); | |
8518 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
8519 | changed_contents = TRUE; | |
8520 | } | |
8521 | ||
8522 | if (contents != NULL | |
8523 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8524 | { | |
8525 | if (!changed_contents && !link_info->keep_memory) | |
8526 | free (contents); | |
8527 | else | |
8528 | { | |
8529 | /* Cache the section contents for elf_link_input_bfd. */ | |
8530 | elf_section_data (sec)->this_hdr.contents = contents; | |
8531 | } | |
8532 | } | |
8533 | return TRUE; | |
8534 | ||
143d77c5 | 8535 | relax_return: |
eea6121a AM |
8536 | if (contents != NULL |
8537 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8538 | free (contents); | |
d0647110 AO |
8539 | return FALSE; |
8540 | } | |
8541 | \f | |
9a59ad6b DJ |
8542 | /* Allocate space for global sym dynamic relocs. */ |
8543 | ||
8544 | static bfd_boolean | |
8545 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
8546 | { | |
8547 | struct bfd_link_info *info = inf; | |
8548 | bfd *dynobj; | |
8549 | struct mips_elf_link_hash_entry *hmips; | |
8550 | struct mips_elf_link_hash_table *htab; | |
8551 | ||
8552 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8553 | BFD_ASSERT (htab != NULL); |
8554 | ||
9a59ad6b DJ |
8555 | dynobj = elf_hash_table (info)->dynobj; |
8556 | hmips = (struct mips_elf_link_hash_entry *) h; | |
8557 | ||
8558 | /* VxWorks executables are handled elsewhere; we only need to | |
8559 | allocate relocations in shared objects. */ | |
8560 | if (htab->is_vxworks && !info->shared) | |
8561 | return TRUE; | |
8562 | ||
7686d77d AM |
8563 | /* Ignore indirect symbols. All relocations against such symbols |
8564 | will be redirected to the target symbol. */ | |
8565 | if (h->root.type == bfd_link_hash_indirect) | |
63897e2c RS |
8566 | return TRUE; |
8567 | ||
9a59ad6b DJ |
8568 | /* If this symbol is defined in a dynamic object, or we are creating |
8569 | a shared library, we will need to copy any R_MIPS_32 or | |
8570 | R_MIPS_REL32 relocs against it into the output file. */ | |
8571 | if (! info->relocatable | |
8572 | && hmips->possibly_dynamic_relocs != 0 | |
8573 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 8574 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
9a59ad6b DJ |
8575 | || info->shared)) |
8576 | { | |
8577 | bfd_boolean do_copy = TRUE; | |
8578 | ||
8579 | if (h->root.type == bfd_link_hash_undefweak) | |
8580 | { | |
8581 | /* Do not copy relocations for undefined weak symbols with | |
8582 | non-default visibility. */ | |
8583 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8584 | do_copy = FALSE; | |
8585 | ||
8586 | /* Make sure undefined weak symbols are output as a dynamic | |
8587 | symbol in PIEs. */ | |
8588 | else if (h->dynindx == -1 && !h->forced_local) | |
8589 | { | |
8590 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8591 | return FALSE; | |
8592 | } | |
8593 | } | |
8594 | ||
8595 | if (do_copy) | |
8596 | { | |
aff469fa | 8597 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
8598 | the SVR4 psABI requires it to have a dynamic symbol table |
8599 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
8600 | relocations against it. | |
8601 | ||
8602 | VxWorks does not enforce the same mapping between the GOT | |
8603 | and the symbol table, so the same requirement does not | |
8604 | apply there. */ | |
6ccf4795 RS |
8605 | if (!htab->is_vxworks) |
8606 | { | |
8607 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
8608 | hmips->global_got_area = GGA_RELOC_ONLY; | |
8609 | hmips->got_only_for_calls = FALSE; | |
8610 | } | |
aff469fa | 8611 | |
9a59ad6b DJ |
8612 | mips_elf_allocate_dynamic_relocations |
8613 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
8614 | if (hmips->readonly_reloc) | |
8615 | /* We tell the dynamic linker that there are relocations | |
8616 | against the text segment. */ | |
8617 | info->flags |= DF_TEXTREL; | |
8618 | } | |
8619 | } | |
8620 | ||
8621 | return TRUE; | |
8622 | } | |
8623 | ||
b49e97c9 TS |
8624 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8625 | regular object. The current definition is in some section of the | |
8626 | dynamic object, but we're not including those sections. We have to | |
8627 | change the definition to something the rest of the link can | |
8628 | understand. */ | |
8629 | ||
b34976b6 | 8630 | bfd_boolean |
9719ad41 RS |
8631 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
8632 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
8633 | { |
8634 | bfd *dynobj; | |
8635 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 8636 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8637 | |
5108fc1b | 8638 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8639 | BFD_ASSERT (htab != NULL); |
8640 | ||
b49e97c9 | 8641 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 8642 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
8643 | |
8644 | /* Make sure we know what is going on here. */ | |
8645 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8646 | && (h->needs_plt |
f6e332e6 | 8647 | || h->u.weakdef != NULL |
f5385ebf AM |
8648 | || (h->def_dynamic |
8649 | && h->ref_regular | |
8650 | && !h->def_regular))); | |
b49e97c9 | 8651 | |
b49e97c9 | 8652 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8653 | |
861fb55a DJ |
8654 | /* If there are call relocations against an externally-defined symbol, |
8655 | see whether we can create a MIPS lazy-binding stub for it. We can | |
8656 | only do this if all references to the function are through call | |
8657 | relocations, and in that case, the traditional lazy-binding stubs | |
8658 | are much more efficient than PLT entries. | |
8659 | ||
8660 | Traditional stubs are only available on SVR4 psABI-based systems; | |
8661 | VxWorks always uses PLTs instead. */ | |
8662 | if (!htab->is_vxworks && h->needs_plt && !hmips->no_fn_stub) | |
b49e97c9 TS |
8663 | { |
8664 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 8665 | return TRUE; |
b49e97c9 TS |
8666 | |
8667 | /* If this symbol is not defined in a regular file, then set | |
8668 | the symbol to the stub location. This is required to make | |
8669 | function pointers compare as equal between the normal | |
8670 | executable and the shared library. */ | |
f5385ebf | 8671 | if (!h->def_regular) |
b49e97c9 | 8672 | { |
33bb52fb RS |
8673 | hmips->needs_lazy_stub = TRUE; |
8674 | htab->lazy_stub_count++; | |
b34976b6 | 8675 | return TRUE; |
b49e97c9 TS |
8676 | } |
8677 | } | |
861fb55a DJ |
8678 | /* As above, VxWorks requires PLT entries for externally-defined |
8679 | functions that are only accessed through call relocations. | |
b49e97c9 | 8680 | |
861fb55a DJ |
8681 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
8682 | are static-only relocations against an externally-defined function. | |
8683 | This can technically occur for shared libraries if there are | |
8684 | branches to the symbol, although it is unlikely that this will be | |
8685 | used in practice due to the short ranges involved. It can occur | |
8686 | for any relative or absolute relocation in executables; in that | |
8687 | case, the PLT entry becomes the function's canonical address. */ | |
8688 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
8689 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
8690 | && htab->use_plts_and_copy_relocs | |
8691 | && !SYMBOL_CALLS_LOCAL (info, h) | |
8692 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8693 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 8694 | { |
861fb55a DJ |
8695 | /* If this is the first symbol to need a PLT entry, allocate room |
8696 | for the header. */ | |
8697 | if (htab->splt->size == 0) | |
8698 | { | |
8699 | BFD_ASSERT (htab->sgotplt->size == 0); | |
0a44bf69 | 8700 | |
861fb55a DJ |
8701 | /* If we're using the PLT additions to the psABI, each PLT |
8702 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
8703 | Encourage better cache usage by aligning. We do this | |
8704 | lazily to avoid pessimizing traditional objects. */ | |
8705 | if (!htab->is_vxworks | |
8706 | && !bfd_set_section_alignment (dynobj, htab->splt, 5)) | |
8707 | return FALSE; | |
0a44bf69 | 8708 | |
861fb55a DJ |
8709 | /* Make sure that .got.plt is word-aligned. We do this lazily |
8710 | for the same reason as above. */ | |
8711 | if (!bfd_set_section_alignment (dynobj, htab->sgotplt, | |
8712 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
8713 | return FALSE; | |
0a44bf69 | 8714 | |
861fb55a | 8715 | htab->splt->size += htab->plt_header_size; |
0a44bf69 | 8716 | |
861fb55a DJ |
8717 | /* On non-VxWorks targets, the first two entries in .got.plt |
8718 | are reserved. */ | |
8719 | if (!htab->is_vxworks) | |
a44acb1e MR |
8720 | htab->sgotplt->size |
8721 | += get_elf_backend_data (dynobj)->got_header_size; | |
0a44bf69 | 8722 | |
861fb55a DJ |
8723 | /* On VxWorks, also allocate room for the header's |
8724 | .rela.plt.unloaded entries. */ | |
8725 | if (htab->is_vxworks && !info->shared) | |
0a44bf69 RS |
8726 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
8727 | } | |
8728 | ||
8729 | /* Assign the next .plt entry to this symbol. */ | |
8730 | h->plt.offset = htab->splt->size; | |
8731 | htab->splt->size += htab->plt_entry_size; | |
8732 | ||
8733 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 8734 | symbol's value to the address of the stub. */ |
131eb6b7 | 8735 | if (!info->shared && !h->def_regular) |
0a44bf69 RS |
8736 | { |
8737 | h->root.u.def.section = htab->splt; | |
8738 | h->root.u.def.value = h->plt.offset; | |
861fb55a DJ |
8739 | /* For VxWorks, point at the PLT load stub rather than the |
8740 | lazy resolution stub; this stub will become the canonical | |
8741 | function address. */ | |
8742 | if (htab->is_vxworks) | |
8743 | h->root.u.def.value += 8; | |
0a44bf69 RS |
8744 | } |
8745 | ||
861fb55a DJ |
8746 | /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT |
8747 | relocation. */ | |
8748 | htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj); | |
8749 | htab->srelplt->size += (htab->is_vxworks | |
8750 | ? MIPS_ELF_RELA_SIZE (dynobj) | |
8751 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
8752 | |
8753 | /* Make room for the .rela.plt.unloaded relocations. */ | |
861fb55a | 8754 | if (htab->is_vxworks && !info->shared) |
0a44bf69 RS |
8755 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
8756 | ||
861fb55a DJ |
8757 | /* All relocations against this symbol that could have been made |
8758 | dynamic will now refer to the PLT entry instead. */ | |
8759 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 8760 | |
0a44bf69 RS |
8761 | return TRUE; |
8762 | } | |
8763 | ||
8764 | /* If this is a weak symbol, and there is a real definition, the | |
8765 | processor independent code will have arranged for us to see the | |
8766 | real definition first, and we can just use the same value. */ | |
8767 | if (h->u.weakdef != NULL) | |
8768 | { | |
8769 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
8770 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8771 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8772 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
8773 | return TRUE; | |
8774 | } | |
8775 | ||
861fb55a DJ |
8776 | /* Otherwise, there is nothing further to do for symbols defined |
8777 | in regular objects. */ | |
8778 | if (h->def_regular) | |
0a44bf69 RS |
8779 | return TRUE; |
8780 | ||
861fb55a DJ |
8781 | /* There's also nothing more to do if we'll convert all relocations |
8782 | against this symbol into dynamic relocations. */ | |
8783 | if (!hmips->has_static_relocs) | |
8784 | return TRUE; | |
8785 | ||
8786 | /* We're now relying on copy relocations. Complain if we have | |
8787 | some that we can't convert. */ | |
8788 | if (!htab->use_plts_and_copy_relocs || info->shared) | |
8789 | { | |
8790 | (*_bfd_error_handler) (_("non-dynamic relocations refer to " | |
8791 | "dynamic symbol %s"), | |
8792 | h->root.root.string); | |
8793 | bfd_set_error (bfd_error_bad_value); | |
8794 | return FALSE; | |
8795 | } | |
8796 | ||
0a44bf69 RS |
8797 | /* We must allocate the symbol in our .dynbss section, which will |
8798 | become part of the .bss section of the executable. There will be | |
8799 | an entry for this symbol in the .dynsym section. The dynamic | |
8800 | object will contain position independent code, so all references | |
8801 | from the dynamic object to this symbol will go through the global | |
8802 | offset table. The dynamic linker will use the .dynsym entry to | |
8803 | determine the address it must put in the global offset table, so | |
8804 | both the dynamic object and the regular object will refer to the | |
8805 | same memory location for the variable. */ | |
8806 | ||
8807 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
8808 | { | |
861fb55a DJ |
8809 | if (htab->is_vxworks) |
8810 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
8811 | else | |
8812 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
8813 | h->needs_copy = 1; |
8814 | } | |
8815 | ||
861fb55a DJ |
8816 | /* All relocations against this symbol that could have been made |
8817 | dynamic will now refer to the local copy instead. */ | |
8818 | hmips->possibly_dynamic_relocs = 0; | |
8819 | ||
027297b7 | 8820 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 8821 | } |
b49e97c9 TS |
8822 | \f |
8823 | /* This function is called after all the input files have been read, | |
8824 | and the input sections have been assigned to output sections. We | |
8825 | check for any mips16 stub sections that we can discard. */ | |
8826 | ||
b34976b6 | 8827 | bfd_boolean |
9719ad41 RS |
8828 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
8829 | struct bfd_link_info *info) | |
b49e97c9 TS |
8830 | { |
8831 | asection *ri; | |
0a44bf69 | 8832 | struct mips_elf_link_hash_table *htab; |
861fb55a | 8833 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
8834 | |
8835 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 8836 | BFD_ASSERT (htab != NULL); |
f4416af6 | 8837 | |
b49e97c9 TS |
8838 | /* The .reginfo section has a fixed size. */ |
8839 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
8840 | if (ri != NULL) | |
9719ad41 | 8841 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 8842 | |
861fb55a DJ |
8843 | hti.info = info; |
8844 | hti.output_bfd = output_bfd; | |
8845 | hti.error = FALSE; | |
8846 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
8847 | mips_elf_check_symbols, &hti); | |
8848 | if (hti.error) | |
8849 | return FALSE; | |
f4416af6 | 8850 | |
33bb52fb RS |
8851 | return TRUE; |
8852 | } | |
8853 | ||
8854 | /* If the link uses a GOT, lay it out and work out its size. */ | |
8855 | ||
8856 | static bfd_boolean | |
8857 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) | |
8858 | { | |
8859 | bfd *dynobj; | |
8860 | asection *s; | |
8861 | struct mips_got_info *g; | |
33bb52fb RS |
8862 | bfd_size_type loadable_size = 0; |
8863 | bfd_size_type page_gotno; | |
8864 | bfd *sub; | |
8865 | struct mips_elf_count_tls_arg count_tls_arg; | |
8866 | struct mips_elf_link_hash_table *htab; | |
8867 | ||
8868 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8869 | BFD_ASSERT (htab != NULL); |
8870 | ||
a8028dd0 | 8871 | s = htab->sgot; |
f4416af6 | 8872 | if (s == NULL) |
b34976b6 | 8873 | return TRUE; |
b49e97c9 | 8874 | |
33bb52fb | 8875 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
8876 | g = htab->got_info; |
8877 | ||
861fb55a DJ |
8878 | /* Allocate room for the reserved entries. VxWorks always reserves |
8879 | 3 entries; other objects only reserve 2 entries. */ | |
8880 | BFD_ASSERT (g->assigned_gotno == 0); | |
8881 | if (htab->is_vxworks) | |
8882 | htab->reserved_gotno = 3; | |
8883 | else | |
8884 | htab->reserved_gotno = 2; | |
8885 | g->local_gotno += htab->reserved_gotno; | |
8886 | g->assigned_gotno = htab->reserved_gotno; | |
8887 | ||
33bb52fb RS |
8888 | /* Replace entries for indirect and warning symbols with entries for |
8889 | the target symbol. */ | |
8890 | if (!mips_elf_resolve_final_got_entries (g)) | |
8891 | return FALSE; | |
f4416af6 | 8892 | |
d4596a51 | 8893 | /* Count the number of GOT symbols. */ |
020d7251 | 8894 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 8895 | |
33bb52fb RS |
8896 | /* Calculate the total loadable size of the output. That |
8897 | will give us the maximum number of GOT_PAGE entries | |
8898 | required. */ | |
8899 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
8900 | { | |
8901 | asection *subsection; | |
5108fc1b | 8902 | |
33bb52fb RS |
8903 | for (subsection = sub->sections; |
8904 | subsection; | |
8905 | subsection = subsection->next) | |
8906 | { | |
8907 | if ((subsection->flags & SEC_ALLOC) == 0) | |
8908 | continue; | |
8909 | loadable_size += ((subsection->size + 0xf) | |
8910 | &~ (bfd_size_type) 0xf); | |
8911 | } | |
8912 | } | |
f4416af6 | 8913 | |
0a44bf69 | 8914 | if (htab->is_vxworks) |
738e5348 | 8915 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
8916 | relocations against local symbols evaluate to "G", and the EABI does |
8917 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 8918 | page_gotno = 0; |
0a44bf69 RS |
8919 | else |
8920 | /* Assume there are two loadable segments consisting of contiguous | |
8921 | sections. Is 5 enough? */ | |
c224138d RS |
8922 | page_gotno = (loadable_size >> 16) + 5; |
8923 | ||
8924 | /* Choose the smaller of the two estimates; both are intended to be | |
8925 | conservative. */ | |
8926 | if (page_gotno > g->page_gotno) | |
8927 | page_gotno = g->page_gotno; | |
f4416af6 | 8928 | |
c224138d | 8929 | g->local_gotno += page_gotno; |
eea6121a | 8930 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
d4596a51 | 8931 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 | 8932 | |
0f20cc35 DJ |
8933 | /* We need to calculate tls_gotno for global symbols at this point |
8934 | instead of building it up earlier, to avoid doublecounting | |
8935 | entries for one global symbol from multiple input files. */ | |
8936 | count_tls_arg.info = info; | |
8937 | count_tls_arg.needed = 0; | |
8938 | elf_link_hash_traverse (elf_hash_table (info), | |
8939 | mips_elf_count_global_tls_entries, | |
8940 | &count_tls_arg); | |
8941 | g->tls_gotno += count_tls_arg.needed; | |
8942 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
8943 | ||
0a44bf69 RS |
8944 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
8945 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
8946 | dynamic loader. */ | |
33bb52fb RS |
8947 | if (htab->is_vxworks) |
8948 | { | |
8949 | /* VxWorks executables do not need a GOT. */ | |
8950 | if (info->shared) | |
8951 | { | |
8952 | /* Each VxWorks GOT entry needs an explicit relocation. */ | |
8953 | unsigned int count; | |
8954 | ||
861fb55a | 8955 | count = g->global_gotno + g->local_gotno - htab->reserved_gotno; |
33bb52fb RS |
8956 | if (count) |
8957 | mips_elf_allocate_dynamic_relocations (dynobj, info, count); | |
8958 | } | |
8959 | } | |
8960 | else if (s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 8961 | { |
a8028dd0 | 8962 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0f20cc35 DJ |
8963 | return FALSE; |
8964 | } | |
8965 | else | |
8966 | { | |
33bb52fb RS |
8967 | struct mips_elf_count_tls_arg arg; |
8968 | ||
8969 | /* Set up TLS entries. */ | |
0f20cc35 DJ |
8970 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
8971 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
33bb52fb RS |
8972 | |
8973 | /* Allocate room for the TLS relocations. */ | |
8974 | arg.info = info; | |
8975 | arg.needed = 0; | |
8976 | htab_traverse (g->got_entries, mips_elf_count_local_tls_relocs, &arg); | |
8977 | elf_link_hash_traverse (elf_hash_table (info), | |
8978 | mips_elf_count_global_tls_relocs, | |
8979 | &arg); | |
8980 | if (arg.needed) | |
8981 | mips_elf_allocate_dynamic_relocations (dynobj, info, arg.needed); | |
0f20cc35 | 8982 | } |
b49e97c9 | 8983 | |
b34976b6 | 8984 | return TRUE; |
b49e97c9 TS |
8985 | } |
8986 | ||
33bb52fb RS |
8987 | /* Estimate the size of the .MIPS.stubs section. */ |
8988 | ||
8989 | static void | |
8990 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
8991 | { | |
8992 | struct mips_elf_link_hash_table *htab; | |
8993 | bfd_size_type dynsymcount; | |
8994 | ||
8995 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
8996 | BFD_ASSERT (htab != NULL); |
8997 | ||
33bb52fb RS |
8998 | if (htab->lazy_stub_count == 0) |
8999 | return; | |
9000 | ||
9001 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
9002 | section, so add a dummy entry to the end. */ | |
9003 | htab->lazy_stub_count++; | |
9004 | ||
9005 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
9006 | At this point, dynsymcount does not account for section symbols | |
9007 | and count_section_dynsyms may overestimate the number that will | |
9008 | be needed. */ | |
9009 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
9010 | + count_section_dynsyms (output_bfd, info)); | |
9011 | ||
9012 | /* Determine the size of one stub entry. */ | |
9013 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9014 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
9015 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
9016 | ||
9017 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
9018 | } | |
9019 | ||
9020 | /* A mips_elf_link_hash_traverse callback for which DATA points to the | |
9021 | MIPS hash table. If H needs a traditional MIPS lazy-binding stub, | |
9022 | allocate an entry in the stubs section. */ | |
9023 | ||
9024 | static bfd_boolean | |
9025 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void **data) | |
9026 | { | |
9027 | struct mips_elf_link_hash_table *htab; | |
9028 | ||
9029 | htab = (struct mips_elf_link_hash_table *) data; | |
9030 | if (h->needs_lazy_stub) | |
9031 | { | |
9032 | h->root.root.u.def.section = htab->sstubs; | |
9033 | h->root.root.u.def.value = htab->sstubs->size; | |
9034 | h->root.plt.offset = htab->sstubs->size; | |
9035 | htab->sstubs->size += htab->function_stub_size; | |
9036 | } | |
9037 | return TRUE; | |
9038 | } | |
9039 | ||
9040 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
9041 | Set the final size of the .MIPS.stub section. */ | |
9042 | ||
9043 | static void | |
9044 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) | |
9045 | { | |
9046 | struct mips_elf_link_hash_table *htab; | |
9047 | ||
9048 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9049 | BFD_ASSERT (htab != NULL); |
9050 | ||
33bb52fb RS |
9051 | if (htab->lazy_stub_count == 0) |
9052 | return; | |
9053 | ||
9054 | htab->sstubs->size = 0; | |
4dfe6ac6 | 9055 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, htab); |
33bb52fb RS |
9056 | htab->sstubs->size += htab->function_stub_size; |
9057 | BFD_ASSERT (htab->sstubs->size | |
9058 | == htab->lazy_stub_count * htab->function_stub_size); | |
9059 | } | |
9060 | ||
b49e97c9 TS |
9061 | /* Set the sizes of the dynamic sections. */ |
9062 | ||
b34976b6 | 9063 | bfd_boolean |
9719ad41 RS |
9064 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
9065 | struct bfd_link_info *info) | |
b49e97c9 TS |
9066 | { |
9067 | bfd *dynobj; | |
861fb55a | 9068 | asection *s, *sreldyn; |
b34976b6 | 9069 | bfd_boolean reltext; |
0a44bf69 | 9070 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9071 | |
0a44bf69 | 9072 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9073 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
9074 | dynobj = elf_hash_table (info)->dynobj; |
9075 | BFD_ASSERT (dynobj != NULL); | |
9076 | ||
9077 | if (elf_hash_table (info)->dynamic_sections_created) | |
9078 | { | |
9079 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 9080 | if (info->executable) |
b49e97c9 | 9081 | { |
3d4d4302 | 9082 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 9083 | BFD_ASSERT (s != NULL); |
eea6121a | 9084 | s->size |
b49e97c9 TS |
9085 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
9086 | s->contents | |
9087 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
9088 | } | |
861fb55a DJ |
9089 | |
9090 | /* Create a symbol for the PLT, if we know that we are using it. */ | |
9091 | if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL) | |
9092 | { | |
9093 | struct elf_link_hash_entry *h; | |
9094 | ||
9095 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9096 | ||
9097 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt, | |
9098 | "_PROCEDURE_LINKAGE_TABLE_"); | |
9099 | htab->root.hplt = h; | |
9100 | if (h == NULL) | |
9101 | return FALSE; | |
9102 | h->type = STT_FUNC; | |
9103 | } | |
9104 | } | |
4e41d0d7 | 9105 | |
9a59ad6b | 9106 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 9107 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 9108 | |
33bb52fb RS |
9109 | mips_elf_estimate_stub_size (output_bfd, info); |
9110 | ||
9111 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
9112 | return FALSE; | |
9113 | ||
9114 | mips_elf_lay_out_lazy_stubs (info); | |
9115 | ||
b49e97c9 TS |
9116 | /* The check_relocs and adjust_dynamic_symbol entry points have |
9117 | determined the sizes of the various dynamic sections. Allocate | |
9118 | memory for them. */ | |
b34976b6 | 9119 | reltext = FALSE; |
b49e97c9 TS |
9120 | for (s = dynobj->sections; s != NULL; s = s->next) |
9121 | { | |
9122 | const char *name; | |
b49e97c9 TS |
9123 | |
9124 | /* It's OK to base decisions on the section name, because none | |
9125 | of the dynobj section names depend upon the input files. */ | |
9126 | name = bfd_get_section_name (dynobj, s); | |
9127 | ||
9128 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9129 | continue; | |
9130 | ||
0112cd26 | 9131 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 9132 | { |
c456f082 | 9133 | if (s->size != 0) |
b49e97c9 TS |
9134 | { |
9135 | const char *outname; | |
9136 | asection *target; | |
9137 | ||
9138 | /* If this relocation section applies to a read only | |
9139 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 9140 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
9141 | assert a DT_TEXTREL entry rather than testing whether |
9142 | there exists a relocation to a read only section or | |
9143 | not. */ | |
9144 | outname = bfd_get_section_name (output_bfd, | |
9145 | s->output_section); | |
9146 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
9147 | if ((target != NULL | |
9148 | && (target->flags & SEC_READONLY) != 0 | |
9149 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 9150 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 9151 | reltext = TRUE; |
b49e97c9 TS |
9152 | |
9153 | /* We use the reloc_count field as a counter if we need | |
9154 | to copy relocs into the output file. */ | |
0a44bf69 | 9155 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 9156 | s->reloc_count = 0; |
f4416af6 AO |
9157 | |
9158 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
9159 | sort relocations, but in a different way than we do, | |
9160 | and before we're done creating relocations. Also, it | |
9161 | will move them around between input sections' | |
9162 | relocation's contents, so our sorting would be | |
9163 | broken, so don't let it run. */ | |
9164 | info->combreloc = 0; | |
b49e97c9 TS |
9165 | } |
9166 | } | |
b49e97c9 TS |
9167 | else if (! info->shared |
9168 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 9169 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 9170 | { |
5108fc1b | 9171 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 9172 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 9173 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
9174 | } |
9175 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 9176 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 9177 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
861fb55a DJ |
9178 | else if (s == htab->splt) |
9179 | { | |
9180 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
9181 | room for an extra nop to fill the delay slot. This is |
9182 | for CPUs without load interlocking. */ | |
9183 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
9184 | && ! htab->is_vxworks && s->size > 0) | |
861fb55a DJ |
9185 | s->size += 4; |
9186 | } | |
0112cd26 | 9187 | else if (! CONST_STRNEQ (name, ".init") |
33bb52fb | 9188 | && s != htab->sgot |
0a44bf69 | 9189 | && s != htab->sgotplt |
861fb55a DJ |
9190 | && s != htab->sstubs |
9191 | && s != htab->sdynbss) | |
b49e97c9 TS |
9192 | { |
9193 | /* It's not one of our sections, so don't allocate space. */ | |
9194 | continue; | |
9195 | } | |
9196 | ||
c456f082 | 9197 | if (s->size == 0) |
b49e97c9 | 9198 | { |
8423293d | 9199 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
9200 | continue; |
9201 | } | |
9202 | ||
c456f082 AM |
9203 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
9204 | continue; | |
9205 | ||
b49e97c9 | 9206 | /* Allocate memory for the section contents. */ |
eea6121a | 9207 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 9208 | if (s->contents == NULL) |
b49e97c9 TS |
9209 | { |
9210 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 9211 | return FALSE; |
b49e97c9 TS |
9212 | } |
9213 | } | |
9214 | ||
9215 | if (elf_hash_table (info)->dynamic_sections_created) | |
9216 | { | |
9217 | /* Add some entries to the .dynamic section. We fill in the | |
9218 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
9219 | must add the entries now so that we get the correct size for | |
5750dcec | 9220 | the .dynamic section. */ |
af5978fb RS |
9221 | |
9222 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 9223 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
9224 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
9225 | may only look at the first one they see. */ | |
af5978fb RS |
9226 | if (!info->shared |
9227 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
9228 | return FALSE; | |
b49e97c9 | 9229 | |
5750dcec DJ |
9230 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
9231 | used by the debugger. */ | |
9232 | if (info->executable | |
9233 | && !SGI_COMPAT (output_bfd) | |
9234 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
9235 | return FALSE; | |
9236 | ||
0a44bf69 | 9237 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
9238 | info->flags |= DF_TEXTREL; |
9239 | ||
9240 | if ((info->flags & DF_TEXTREL) != 0) | |
9241 | { | |
9242 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 9243 | return FALSE; |
943284cc DJ |
9244 | |
9245 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
9246 | write out an actual text relocation; we may not, because | |
9247 | at this point we do not know whether e.g. any .eh_frame | |
9248 | absolute relocations have been converted to PC-relative. */ | |
9249 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
9250 | } |
9251 | ||
9252 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 9253 | return FALSE; |
b49e97c9 | 9254 | |
861fb55a | 9255 | sreldyn = mips_elf_rel_dyn_section (info, FALSE); |
0a44bf69 | 9256 | if (htab->is_vxworks) |
b49e97c9 | 9257 | { |
0a44bf69 RS |
9258 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
9259 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 9260 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9261 | { |
9262 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
9263 | return FALSE; | |
b49e97c9 | 9264 | |
0a44bf69 RS |
9265 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
9266 | return FALSE; | |
b49e97c9 | 9267 | |
0a44bf69 RS |
9268 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
9269 | return FALSE; | |
9270 | } | |
b49e97c9 | 9271 | } |
0a44bf69 RS |
9272 | else |
9273 | { | |
861fb55a | 9274 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
9275 | { |
9276 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
9277 | return FALSE; | |
b49e97c9 | 9278 | |
0a44bf69 RS |
9279 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
9280 | return FALSE; | |
b49e97c9 | 9281 | |
0a44bf69 RS |
9282 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
9283 | return FALSE; | |
9284 | } | |
b49e97c9 | 9285 | |
0a44bf69 RS |
9286 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
9287 | return FALSE; | |
b49e97c9 | 9288 | |
0a44bf69 RS |
9289 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
9290 | return FALSE; | |
b49e97c9 | 9291 | |
0a44bf69 RS |
9292 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
9293 | return FALSE; | |
b49e97c9 | 9294 | |
0a44bf69 RS |
9295 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
9296 | return FALSE; | |
b49e97c9 | 9297 | |
0a44bf69 RS |
9298 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
9299 | return FALSE; | |
b49e97c9 | 9300 | |
0a44bf69 RS |
9301 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
9302 | return FALSE; | |
b49e97c9 | 9303 | |
0a44bf69 RS |
9304 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
9305 | return FALSE; | |
9306 | ||
9307 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
9308 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
9309 | return FALSE; | |
9310 | ||
9311 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
9312 | && (bfd_get_section_by_name | |
af0edeb8 | 9313 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 RS |
9314 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
9315 | return FALSE; | |
9316 | } | |
861fb55a DJ |
9317 | if (htab->splt->size > 0) |
9318 | { | |
9319 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
9320 | return FALSE; | |
9321 | ||
9322 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
9323 | return FALSE; | |
9324 | ||
9325 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
9326 | return FALSE; | |
9327 | ||
9328 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
9329 | return FALSE; | |
9330 | } | |
7a2b07ff NS |
9331 | if (htab->is_vxworks |
9332 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
9333 | return FALSE; | |
b49e97c9 TS |
9334 | } |
9335 | ||
b34976b6 | 9336 | return TRUE; |
b49e97c9 TS |
9337 | } |
9338 | \f | |
81d43bff RS |
9339 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
9340 | Adjust its R_ADDEND field so that it is correct for the output file. | |
9341 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
9342 | and sections respectively; both use symbol indexes. */ | |
9343 | ||
9344 | static void | |
9345 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
9346 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
9347 | asection **local_sections, Elf_Internal_Rela *rel) | |
9348 | { | |
9349 | unsigned int r_type, r_symndx; | |
9350 | Elf_Internal_Sym *sym; | |
9351 | asection *sec; | |
9352 | ||
020d7251 | 9353 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
9354 | { |
9355 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 9356 | if (gprel16_reloc_p (r_type) |
81d43bff | 9357 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 9358 | || literal_reloc_p (r_type)) |
81d43bff RS |
9359 | { |
9360 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
9361 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
9362 | } | |
9363 | ||
9364 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
9365 | sym = local_syms + r_symndx; | |
9366 | ||
9367 | /* Adjust REL's addend to account for section merging. */ | |
9368 | if (!info->relocatable) | |
9369 | { | |
9370 | sec = local_sections[r_symndx]; | |
9371 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
9372 | } | |
9373 | ||
9374 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
9375 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9376 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
9377 | } | |
9378 | } | |
9379 | ||
545fd46b MR |
9380 | /* Handle relocations against symbols from removed linkonce sections, |
9381 | or sections discarded by a linker script. We use this wrapper around | |
9382 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
9383 | on 64-bit ELF targets. In this case for any relocation handled, which | |
9384 | always be the first in a triplet, the remaining two have to be processed | |
9385 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
9386 | index referred by the first reloc that applies to all the three and the | |
9387 | remaining two never refer to an object symbol. And it is the final | |
9388 | relocation (the last non-null one) that determines the output field of | |
9389 | the whole relocation so retrieve the corresponding howto structure for | |
9390 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
9391 | ||
9392 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
9393 | and therefore requires to be pasted in a loop. It also defines a block | |
9394 | and does not protect any of its arguments, hence the extra brackets. */ | |
9395 | ||
9396 | static void | |
9397 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
9398 | struct bfd_link_info *info, | |
9399 | bfd *input_bfd, asection *input_section, | |
9400 | Elf_Internal_Rela **rel, | |
9401 | const Elf_Internal_Rela **relend, | |
9402 | bfd_boolean rel_reloc, | |
9403 | reloc_howto_type *howto, | |
9404 | bfd_byte *contents) | |
9405 | { | |
9406 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
9407 | int count = bed->s->int_rels_per_ext_rel; | |
9408 | unsigned int r_type; | |
9409 | int i; | |
9410 | ||
9411 | for (i = count - 1; i > 0; i--) | |
9412 | { | |
9413 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
9414 | if (r_type != R_MIPS_NONE) | |
9415 | { | |
9416 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
9417 | break; | |
9418 | } | |
9419 | } | |
9420 | do | |
9421 | { | |
9422 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
9423 | (*rel), count, (*relend), | |
9424 | howto, i, contents); | |
9425 | } | |
9426 | while (0); | |
9427 | } | |
9428 | ||
b49e97c9 TS |
9429 | /* Relocate a MIPS ELF section. */ |
9430 | ||
b34976b6 | 9431 | bfd_boolean |
9719ad41 RS |
9432 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
9433 | bfd *input_bfd, asection *input_section, | |
9434 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
9435 | Elf_Internal_Sym *local_syms, | |
9436 | asection **local_sections) | |
b49e97c9 TS |
9437 | { |
9438 | Elf_Internal_Rela *rel; | |
9439 | const Elf_Internal_Rela *relend; | |
9440 | bfd_vma addend = 0; | |
b34976b6 | 9441 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 9442 | const struct elf_backend_data *bed; |
b49e97c9 TS |
9443 | |
9444 | bed = get_elf_backend_data (output_bfd); | |
9445 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
9446 | for (rel = relocs; rel < relend; ++rel) | |
9447 | { | |
9448 | const char *name; | |
c9adbffe | 9449 | bfd_vma value = 0; |
b49e97c9 | 9450 | reloc_howto_type *howto; |
38a7df63 | 9451 | bfd_boolean cross_mode_jump_p; |
b34976b6 | 9452 | /* TRUE if the relocation is a RELA relocation, rather than a |
b49e97c9 | 9453 | REL relocation. */ |
b34976b6 | 9454 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 9455 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 9456 | const char *msg; |
ab96bf03 AM |
9457 | unsigned long r_symndx; |
9458 | asection *sec; | |
749b8d9d L |
9459 | Elf_Internal_Shdr *symtab_hdr; |
9460 | struct elf_link_hash_entry *h; | |
d4730f92 | 9461 | bfd_boolean rel_reloc; |
b49e97c9 | 9462 | |
d4730f92 BS |
9463 | rel_reloc = (NEWABI_P (input_bfd) |
9464 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
9465 | relocs, rel)); | |
b49e97c9 | 9466 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 9467 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
9468 | |
9469 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 9470 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 9471 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
9472 | { |
9473 | sec = local_sections[r_symndx]; | |
9474 | h = NULL; | |
9475 | } | |
ab96bf03 AM |
9476 | else |
9477 | { | |
ab96bf03 | 9478 | unsigned long extsymoff; |
ab96bf03 | 9479 | |
ab96bf03 AM |
9480 | extsymoff = 0; |
9481 | if (!elf_bad_symtab (input_bfd)) | |
9482 | extsymoff = symtab_hdr->sh_info; | |
9483 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
9484 | while (h->root.type == bfd_link_hash_indirect | |
9485 | || h->root.type == bfd_link_hash_warning) | |
9486 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9487 | ||
9488 | sec = NULL; | |
9489 | if (h->root.type == bfd_link_hash_defined | |
9490 | || h->root.type == bfd_link_hash_defweak) | |
9491 | sec = h->root.u.def.section; | |
9492 | } | |
9493 | ||
dbaa2011 | 9494 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
9495 | { |
9496 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
9497 | input_section, &rel, &relend, | |
9498 | rel_reloc, howto, contents); | |
9499 | continue; | |
9500 | } | |
ab96bf03 | 9501 | |
4a14403c | 9502 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
9503 | { |
9504 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
9505 | 64-bit code, but make sure all their addresses are in the | |
9506 | lowermost or uppermost 32-bit section of the 64-bit address | |
9507 | space. Thus, when they use an R_MIPS_64 they mean what is | |
9508 | usually meant by R_MIPS_32, with the exception that the | |
9509 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 9510 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
9511 | |
9512 | /* On big-endian systems, we need to lie about the position | |
9513 | of the reloc. */ | |
9514 | if (bfd_big_endian (input_bfd)) | |
9515 | rel->r_offset += 4; | |
9516 | } | |
b49e97c9 TS |
9517 | |
9518 | if (!use_saved_addend_p) | |
9519 | { | |
b49e97c9 TS |
9520 | /* If these relocations were originally of the REL variety, |
9521 | we must pull the addend out of the field that will be | |
9522 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
9523 | RELA relocation. */ |
9524 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
9525 | relocs, rel)) | |
b49e97c9 | 9526 | { |
b34976b6 | 9527 | rela_relocation_p = FALSE; |
c224138d RS |
9528 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
9529 | howto, contents); | |
738e5348 RS |
9530 | if (hi16_reloc_p (r_type) |
9531 | || (got16_reloc_p (r_type) | |
b49e97c9 | 9532 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 9533 | local_sections))) |
b49e97c9 | 9534 | { |
c224138d RS |
9535 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
9536 | contents, &addend)) | |
749b8d9d | 9537 | { |
749b8d9d L |
9538 | if (h) |
9539 | name = h->root.root.string; | |
9540 | else | |
9541 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
9542 | local_syms + r_symndx, | |
9543 | sec); | |
9544 | (*_bfd_error_handler) | |
9545 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
9546 | input_bfd, input_section, name, howto->name, | |
9547 | rel->r_offset); | |
749b8d9d | 9548 | } |
b49e97c9 | 9549 | } |
30ac9238 RS |
9550 | else |
9551 | addend <<= howto->rightshift; | |
b49e97c9 TS |
9552 | } |
9553 | else | |
9554 | addend = rel->r_addend; | |
81d43bff RS |
9555 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
9556 | local_syms, local_sections, rel); | |
b49e97c9 TS |
9557 | } |
9558 | ||
1049f94e | 9559 | if (info->relocatable) |
b49e97c9 | 9560 | { |
4a14403c | 9561 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
9562 | && bfd_big_endian (input_bfd)) |
9563 | rel->r_offset -= 4; | |
9564 | ||
81d43bff | 9565 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 9566 | { |
81d43bff | 9567 | addend += rel->r_addend; |
738e5348 | 9568 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
9569 | addend = mips_elf_high (addend); |
9570 | else if (r_type == R_MIPS_HIGHER) | |
9571 | addend = mips_elf_higher (addend); | |
9572 | else if (r_type == R_MIPS_HIGHEST) | |
9573 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
9574 | else |
9575 | addend >>= howto->rightshift; | |
b49e97c9 | 9576 | |
30ac9238 RS |
9577 | /* We use the source mask, rather than the destination |
9578 | mask because the place to which we are writing will be | |
9579 | source of the addend in the final link. */ | |
b49e97c9 TS |
9580 | addend &= howto->src_mask; |
9581 | ||
5a659663 | 9582 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9583 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9584 | ABI. Here, we need to update the addend. It would be | |
9585 | possible to get away with just using the R_MIPS_32 reloc | |
9586 | but for endianness. */ | |
9587 | { | |
9588 | bfd_vma sign_bits; | |
9589 | bfd_vma low_bits; | |
9590 | bfd_vma high_bits; | |
9591 | ||
9592 | if (addend & ((bfd_vma) 1 << 31)) | |
9593 | #ifdef BFD64 | |
9594 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9595 | #else | |
9596 | sign_bits = -1; | |
9597 | #endif | |
9598 | else | |
9599 | sign_bits = 0; | |
9600 | ||
9601 | /* If we don't know that we have a 64-bit type, | |
9602 | do two separate stores. */ | |
9603 | if (bfd_big_endian (input_bfd)) | |
9604 | { | |
9605 | /* Store the sign-bits (which are most significant) | |
9606 | first. */ | |
9607 | low_bits = sign_bits; | |
9608 | high_bits = addend; | |
9609 | } | |
9610 | else | |
9611 | { | |
9612 | low_bits = addend; | |
9613 | high_bits = sign_bits; | |
9614 | } | |
9615 | bfd_put_32 (input_bfd, low_bits, | |
9616 | contents + rel->r_offset); | |
9617 | bfd_put_32 (input_bfd, high_bits, | |
9618 | contents + rel->r_offset + 4); | |
9619 | continue; | |
9620 | } | |
9621 | ||
9622 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
9623 | input_bfd, input_section, | |
b34976b6 AM |
9624 | contents, FALSE)) |
9625 | return FALSE; | |
b49e97c9 TS |
9626 | } |
9627 | ||
9628 | /* Go on to the next relocation. */ | |
9629 | continue; | |
9630 | } | |
9631 | ||
9632 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
9633 | relocations for the same offset. In that case we are | |
9634 | supposed to treat the output of each relocation as the addend | |
9635 | for the next. */ | |
9636 | if (rel + 1 < relend | |
9637 | && rel->r_offset == rel[1].r_offset | |
9638 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 9639 | use_saved_addend_p = TRUE; |
b49e97c9 | 9640 | else |
b34976b6 | 9641 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
9642 | |
9643 | /* Figure out what value we are supposed to relocate. */ | |
9644 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
9645 | input_section, info, rel, | |
9646 | addend, howto, local_syms, | |
9647 | local_sections, &value, | |
38a7df63 | 9648 | &name, &cross_mode_jump_p, |
bce03d3d | 9649 | use_saved_addend_p)) |
b49e97c9 TS |
9650 | { |
9651 | case bfd_reloc_continue: | |
9652 | /* There's nothing to do. */ | |
9653 | continue; | |
9654 | ||
9655 | case bfd_reloc_undefined: | |
9656 | /* mips_elf_calculate_relocation already called the | |
9657 | undefined_symbol callback. There's no real point in | |
9658 | trying to perform the relocation at this point, so we | |
9659 | just skip ahead to the next relocation. */ | |
9660 | continue; | |
9661 | ||
9662 | case bfd_reloc_notsupported: | |
9663 | msg = _("internal error: unsupported relocation error"); | |
9664 | info->callbacks->warning | |
9665 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 9666 | return FALSE; |
b49e97c9 TS |
9667 | |
9668 | case bfd_reloc_overflow: | |
9669 | if (use_saved_addend_p) | |
9670 | /* Ignore overflow until we reach the last relocation for | |
9671 | a given location. */ | |
9672 | ; | |
9673 | else | |
9674 | { | |
0e53d9da AN |
9675 | struct mips_elf_link_hash_table *htab; |
9676 | ||
9677 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9678 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9679 | BFD_ASSERT (name != NULL); |
0e53d9da | 9680 | if (!htab->small_data_overflow_reported |
9684f078 | 9681 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 9682 | || literal_reloc_p (howto->type))) |
0e53d9da | 9683 | { |
91d6fa6a NC |
9684 | msg = _("small-data section exceeds 64KB;" |
9685 | " lower small-data size limit (see option -G)"); | |
0e53d9da AN |
9686 | |
9687 | htab->small_data_overflow_reported = TRUE; | |
9688 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
9689 | } | |
b49e97c9 | 9690 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 9691 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 9692 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9693 | return FALSE; |
b49e97c9 TS |
9694 | } |
9695 | break; | |
9696 | ||
9697 | case bfd_reloc_ok: | |
9698 | break; | |
9699 | ||
df58fc94 RS |
9700 | case bfd_reloc_outofrange: |
9701 | if (jal_reloc_p (howto->type)) | |
9702 | { | |
9703 | msg = _("JALX to a non-word-aligned address"); | |
9704 | info->callbacks->warning | |
9705 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
9706 | return FALSE; | |
9707 | } | |
9708 | /* Fall through. */ | |
9709 | ||
b49e97c9 TS |
9710 | default: |
9711 | abort (); | |
9712 | break; | |
9713 | } | |
9714 | ||
9715 | /* If we've got another relocation for the address, keep going | |
9716 | until we reach the last one. */ | |
9717 | if (use_saved_addend_p) | |
9718 | { | |
9719 | addend = value; | |
9720 | continue; | |
9721 | } | |
9722 | ||
4a14403c | 9723 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
9724 | /* See the comment above about using R_MIPS_64 in the 32-bit |
9725 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
9726 | that calculated the right value. Now, however, we | |
9727 | sign-extend the 32-bit result to 64-bits, and store it as a | |
9728 | 64-bit value. We are especially generous here in that we | |
9729 | go to extreme lengths to support this usage on systems with | |
9730 | only a 32-bit VMA. */ | |
9731 | { | |
9732 | bfd_vma sign_bits; | |
9733 | bfd_vma low_bits; | |
9734 | bfd_vma high_bits; | |
9735 | ||
9736 | if (value & ((bfd_vma) 1 << 31)) | |
9737 | #ifdef BFD64 | |
9738 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
9739 | #else | |
9740 | sign_bits = -1; | |
9741 | #endif | |
9742 | else | |
9743 | sign_bits = 0; | |
9744 | ||
9745 | /* If we don't know that we have a 64-bit type, | |
9746 | do two separate stores. */ | |
9747 | if (bfd_big_endian (input_bfd)) | |
9748 | { | |
9749 | /* Undo what we did above. */ | |
9750 | rel->r_offset -= 4; | |
9751 | /* Store the sign-bits (which are most significant) | |
9752 | first. */ | |
9753 | low_bits = sign_bits; | |
9754 | high_bits = value; | |
9755 | } | |
9756 | else | |
9757 | { | |
9758 | low_bits = value; | |
9759 | high_bits = sign_bits; | |
9760 | } | |
9761 | bfd_put_32 (input_bfd, low_bits, | |
9762 | contents + rel->r_offset); | |
9763 | bfd_put_32 (input_bfd, high_bits, | |
9764 | contents + rel->r_offset + 4); | |
9765 | continue; | |
9766 | } | |
9767 | ||
9768 | /* Actually perform the relocation. */ | |
9769 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
9770 | input_bfd, input_section, | |
38a7df63 | 9771 | contents, cross_mode_jump_p)) |
b34976b6 | 9772 | return FALSE; |
b49e97c9 TS |
9773 | } |
9774 | ||
b34976b6 | 9775 | return TRUE; |
b49e97c9 TS |
9776 | } |
9777 | \f | |
861fb55a DJ |
9778 | /* A function that iterates over each entry in la25_stubs and fills |
9779 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
9780 | ||
9781 | static int | |
9782 | mips_elf_create_la25_stub (void **slot, void *data) | |
9783 | { | |
9784 | struct mips_htab_traverse_info *hti; | |
9785 | struct mips_elf_link_hash_table *htab; | |
9786 | struct mips_elf_la25_stub *stub; | |
9787 | asection *s; | |
9788 | bfd_byte *loc; | |
9789 | bfd_vma offset, target, target_high, target_low; | |
9790 | ||
9791 | stub = (struct mips_elf_la25_stub *) *slot; | |
9792 | hti = (struct mips_htab_traverse_info *) data; | |
9793 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 9794 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
9795 | |
9796 | /* Create the section contents, if we haven't already. */ | |
9797 | s = stub->stub_section; | |
9798 | loc = s->contents; | |
9799 | if (loc == NULL) | |
9800 | { | |
9801 | loc = bfd_malloc (s->size); | |
9802 | if (loc == NULL) | |
9803 | { | |
9804 | hti->error = TRUE; | |
9805 | return FALSE; | |
9806 | } | |
9807 | s->contents = loc; | |
9808 | } | |
9809 | ||
9810 | /* Work out where in the section this stub should go. */ | |
9811 | offset = stub->offset; | |
9812 | ||
9813 | /* Work out the target address. */ | |
8f0c309a CLT |
9814 | target = mips_elf_get_la25_target (stub, &s); |
9815 | target += s->output_section->vma + s->output_offset; | |
9816 | ||
861fb55a DJ |
9817 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
9818 | target_low = (target & 0xffff); | |
9819 | ||
9820 | if (stub->stub_section != htab->strampoline) | |
9821 | { | |
df58fc94 | 9822 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
9823 | of the section and write the two instructions at the end. */ |
9824 | memset (loc, 0, offset); | |
9825 | loc += offset; | |
df58fc94 RS |
9826 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9827 | { | |
d21911ea MR |
9828 | bfd_put_micromips_32 (hti->output_bfd, |
9829 | LA25_LUI_MICROMIPS (target_high), | |
9830 | loc); | |
9831 | bfd_put_micromips_32 (hti->output_bfd, | |
9832 | LA25_ADDIU_MICROMIPS (target_low), | |
9833 | loc + 4); | |
df58fc94 RS |
9834 | } |
9835 | else | |
9836 | { | |
9837 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9838 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
9839 | } | |
861fb55a DJ |
9840 | } |
9841 | else | |
9842 | { | |
9843 | /* This is trampoline. */ | |
9844 | loc += offset; | |
df58fc94 RS |
9845 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
9846 | { | |
d21911ea MR |
9847 | bfd_put_micromips_32 (hti->output_bfd, |
9848 | LA25_LUI_MICROMIPS (target_high), loc); | |
9849 | bfd_put_micromips_32 (hti->output_bfd, | |
9850 | LA25_J_MICROMIPS (target), loc + 4); | |
9851 | bfd_put_micromips_32 (hti->output_bfd, | |
9852 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
9853 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
9854 | } | |
9855 | else | |
9856 | { | |
9857 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
9858 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
9859 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
9860 | bfd_put_32 (hti->output_bfd, 0, loc + 12); | |
9861 | } | |
861fb55a DJ |
9862 | } |
9863 | return TRUE; | |
9864 | } | |
9865 | ||
b49e97c9 TS |
9866 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
9867 | adjust it appropriately now. */ | |
9868 | ||
9869 | static void | |
9719ad41 RS |
9870 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
9871 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9872 | { |
9873 | /* The linker script takes care of providing names and values for | |
9874 | these, but we must place them into the right sections. */ | |
9875 | static const char* const text_section_symbols[] = { | |
9876 | "_ftext", | |
9877 | "_etext", | |
9878 | "__dso_displacement", | |
9879 | "__elf_header", | |
9880 | "__program_header_table", | |
9881 | NULL | |
9882 | }; | |
9883 | ||
9884 | static const char* const data_section_symbols[] = { | |
9885 | "_fdata", | |
9886 | "_edata", | |
9887 | "_end", | |
9888 | "_fbss", | |
9889 | NULL | |
9890 | }; | |
9891 | ||
9892 | const char* const *p; | |
9893 | int i; | |
9894 | ||
9895 | for (i = 0; i < 2; ++i) | |
9896 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
9897 | *p; | |
9898 | ++p) | |
9899 | if (strcmp (*p, name) == 0) | |
9900 | { | |
9901 | /* All of these symbols are given type STT_SECTION by the | |
9902 | IRIX6 linker. */ | |
9903 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 9904 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
9905 | |
9906 | /* The IRIX linker puts these symbols in special sections. */ | |
9907 | if (i == 0) | |
9908 | sym->st_shndx = SHN_MIPS_TEXT; | |
9909 | else | |
9910 | sym->st_shndx = SHN_MIPS_DATA; | |
9911 | ||
9912 | break; | |
9913 | } | |
9914 | } | |
9915 | ||
9916 | /* Finish up dynamic symbol handling. We set the contents of various | |
9917 | dynamic sections here. */ | |
9918 | ||
b34976b6 | 9919 | bfd_boolean |
9719ad41 RS |
9920 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
9921 | struct bfd_link_info *info, | |
9922 | struct elf_link_hash_entry *h, | |
9923 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
9924 | { |
9925 | bfd *dynobj; | |
b49e97c9 | 9926 | asection *sgot; |
f4416af6 | 9927 | struct mips_got_info *g, *gg; |
b49e97c9 | 9928 | const char *name; |
3d6746ca | 9929 | int idx; |
5108fc1b | 9930 | struct mips_elf_link_hash_table *htab; |
738e5348 | 9931 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 9932 | |
5108fc1b | 9933 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9934 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 9935 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 9936 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9937 | |
861fb55a DJ |
9938 | BFD_ASSERT (!htab->is_vxworks); |
9939 | ||
9940 | if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub) | |
9941 | { | |
9942 | /* We've decided to create a PLT entry for this symbol. */ | |
9943 | bfd_byte *loc; | |
9944 | bfd_vma header_address, plt_index, got_address; | |
9945 | bfd_vma got_address_high, got_address_low, load; | |
9946 | const bfd_vma *plt_entry; | |
9947 | ||
9948 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
9949 | BFD_ASSERT (h->dynindx != -1); | |
9950 | BFD_ASSERT (htab->splt != NULL); | |
9951 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
9952 | BFD_ASSERT (!h->def_regular); | |
9953 | ||
9954 | /* Calculate the address of the PLT header. */ | |
9955 | header_address = (htab->splt->output_section->vma | |
9956 | + htab->splt->output_offset); | |
9957 | ||
9958 | /* Calculate the index of the entry. */ | |
9959 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
9960 | / htab->plt_entry_size); | |
9961 | ||
9962 | /* Calculate the address of the .got.plt entry. */ | |
9963 | got_address = (htab->sgotplt->output_section->vma | |
9964 | + htab->sgotplt->output_offset | |
9965 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9966 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9967 | got_address_low = got_address & 0xffff; | |
9968 | ||
9969 | /* Initially point the .got.plt entry at the PLT header. */ | |
9970 | loc = (htab->sgotplt->contents | |
9971 | + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj)); | |
9972 | if (ABI_64_P (output_bfd)) | |
9973 | bfd_put_64 (output_bfd, header_address, loc); | |
9974 | else | |
9975 | bfd_put_32 (output_bfd, header_address, loc); | |
9976 | ||
9977 | /* Find out where the .plt entry should go. */ | |
9978 | loc = htab->splt->contents + h->plt.offset; | |
9979 | ||
9980 | /* Pick the load opcode. */ | |
9981 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
9982 | ||
9983 | /* Fill in the PLT entry itself. */ | |
9984 | plt_entry = mips_exec_plt_entry; | |
9985 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); | |
9986 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4); | |
6d30f5b2 NC |
9987 | |
9988 | if (! LOAD_INTERLOCKS_P (output_bfd)) | |
9989 | { | |
9990 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
9991 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9992 | } | |
9993 | else | |
9994 | { | |
9995 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
9996 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12); | |
9997 | } | |
861fb55a DJ |
9998 | |
9999 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
10000 | mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt, | |
10001 | plt_index, h->dynindx, | |
10002 | R_MIPS_JUMP_SLOT, got_address); | |
10003 | ||
10004 | /* We distinguish between PLT entries and lazy-binding stubs by | |
10005 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
10006 | flag and leave the value if there are any relocations in the | |
10007 | binary where pointer equality matters. */ | |
10008 | sym->st_shndx = SHN_UNDEF; | |
10009 | if (h->pointer_equality_needed) | |
10010 | sym->st_other = STO_MIPS_PLT; | |
10011 | else | |
10012 | sym->st_value = 0; | |
10013 | } | |
10014 | else if (h->plt.offset != MINUS_ONE) | |
b49e97c9 | 10015 | { |
861fb55a | 10016 | /* We've decided to create a lazy-binding stub. */ |
5108fc1b | 10017 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
10018 | |
10019 | /* This symbol has a stub. Set it up. */ | |
10020 | ||
10021 | BFD_ASSERT (h->dynindx != -1); | |
10022 | ||
5108fc1b RS |
10023 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
10024 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
10025 | |
10026 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
10027 | sign extension at runtime in the stub, resulting in a negative |
10028 | index value. */ | |
10029 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 10030 | return FALSE; |
b49e97c9 TS |
10031 | |
10032 | /* Fill the stub. */ | |
3d6746ca DD |
10033 | idx = 0; |
10034 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
10035 | idx += 4; | |
10036 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
10037 | idx += 4; | |
5108fc1b | 10038 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 10039 | { |
5108fc1b | 10040 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
10041 | stub + idx); |
10042 | idx += 4; | |
10043 | } | |
10044 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
10045 | idx += 4; | |
b49e97c9 | 10046 | |
3d6746ca DD |
10047 | /* If a large stub is not required and sign extension is not a |
10048 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
10049 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
10050 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
10051 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
10052 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
10053 | else | |
5108fc1b RS |
10054 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
10055 | stub + idx); | |
10056 | ||
4e41d0d7 RS |
10057 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
10058 | memcpy (htab->sstubs->contents + h->plt.offset, | |
10059 | stub, htab->function_stub_size); | |
b49e97c9 TS |
10060 | |
10061 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
10062 | only for the referenced symbol. */ | |
10063 | sym->st_shndx = SHN_UNDEF; | |
10064 | ||
10065 | /* The run-time linker uses the st_value field of the symbol | |
10066 | to reset the global offset table entry for this external | |
10067 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
10068 | sym->st_value = (htab->sstubs->output_section->vma |
10069 | + htab->sstubs->output_offset | |
c5ae1840 | 10070 | + h->plt.offset); |
b49e97c9 TS |
10071 | } |
10072 | ||
738e5348 RS |
10073 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
10074 | refer to the stub, since only the stub uses the standard calling | |
10075 | conventions. */ | |
10076 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
10077 | { | |
10078 | BFD_ASSERT (hmips->need_fn_stub); | |
10079 | sym->st_value = (hmips->fn_stub->output_section->vma | |
10080 | + hmips->fn_stub->output_offset); | |
10081 | sym->st_size = hmips->fn_stub->size; | |
10082 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
10083 | } | |
10084 | ||
b49e97c9 | 10085 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 10086 | || h->forced_local); |
b49e97c9 | 10087 | |
23cc69b6 | 10088 | sgot = htab->sgot; |
a8028dd0 | 10089 | g = htab->got_info; |
b49e97c9 TS |
10090 | BFD_ASSERT (g != NULL); |
10091 | ||
10092 | /* Run through the global symbol table, creating GOT entries for all | |
10093 | the symbols that need them. */ | |
020d7251 | 10094 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
10095 | { |
10096 | bfd_vma offset; | |
10097 | bfd_vma value; | |
10098 | ||
6eaa6adc | 10099 | value = sym->st_value; |
738e5348 RS |
10100 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, |
10101 | R_MIPS_GOT16, info); | |
b49e97c9 TS |
10102 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
10103 | } | |
10104 | ||
020d7251 | 10105 | if (hmips->global_got_area != GGA_NONE && g->next && h->type != STT_TLS) |
f4416af6 AO |
10106 | { |
10107 | struct mips_got_entry e, *p; | |
0626d451 | 10108 | bfd_vma entry; |
f4416af6 | 10109 | bfd_vma offset; |
f4416af6 AO |
10110 | |
10111 | gg = g; | |
10112 | ||
10113 | e.abfd = output_bfd; | |
10114 | e.symndx = -1; | |
738e5348 | 10115 | e.d.h = hmips; |
0f20cc35 | 10116 | e.tls_type = 0; |
143d77c5 | 10117 | |
f4416af6 AO |
10118 | for (g = g->next; g->next != gg; g = g->next) |
10119 | { | |
10120 | if (g->got_entries | |
10121 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
10122 | &e))) | |
10123 | { | |
10124 | offset = p->gotidx; | |
0626d451 RS |
10125 | if (info->shared |
10126 | || (elf_hash_table (info)->dynamic_sections_created | |
10127 | && p->d.h != NULL | |
f5385ebf AM |
10128 | && p->d.h->root.def_dynamic |
10129 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
10130 | { |
10131 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
10132 | the various compatibility problems, it's easier to mock | |
10133 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
10134 | mips_elf_create_dynamic_relocation to calculate the | |
10135 | appropriate addend. */ | |
10136 | Elf_Internal_Rela rel[3]; | |
10137 | ||
10138 | memset (rel, 0, sizeof (rel)); | |
10139 | if (ABI_64_P (output_bfd)) | |
10140 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
10141 | else | |
10142 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
10143 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
10144 | ||
10145 | entry = 0; | |
10146 | if (! (mips_elf_create_dynamic_relocation | |
10147 | (output_bfd, info, rel, | |
10148 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
10149 | return FALSE; | |
10150 | } | |
10151 | else | |
10152 | entry = sym->st_value; | |
10153 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
10154 | } |
10155 | } | |
10156 | } | |
10157 | ||
b49e97c9 TS |
10158 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
10159 | name = h->root.root.string; | |
9637f6ef | 10160 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 10161 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
10162 | sym->st_shndx = SHN_ABS; |
10163 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
10164 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
10165 | { | |
10166 | sym->st_shndx = SHN_ABS; | |
10167 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10168 | sym->st_value = 1; | |
10169 | } | |
4a14403c | 10170 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10171 | { |
10172 | sym->st_shndx = SHN_ABS; | |
10173 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10174 | sym->st_value = elf_gp (output_bfd); | |
10175 | } | |
10176 | else if (SGI_COMPAT (output_bfd)) | |
10177 | { | |
10178 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
10179 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
10180 | { | |
10181 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10182 | sym->st_other = STO_PROTECTED; | |
10183 | sym->st_value = 0; | |
10184 | sym->st_shndx = SHN_MIPS_DATA; | |
10185 | } | |
10186 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
10187 | { | |
10188 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
10189 | sym->st_other = STO_PROTECTED; | |
10190 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
10191 | sym->st_shndx = SHN_ABS; | |
10192 | } | |
10193 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
10194 | { | |
10195 | if (h->type == STT_FUNC) | |
10196 | sym->st_shndx = SHN_MIPS_TEXT; | |
10197 | else if (h->type == STT_OBJECT) | |
10198 | sym->st_shndx = SHN_MIPS_DATA; | |
10199 | } | |
10200 | } | |
10201 | ||
861fb55a DJ |
10202 | /* Emit a copy reloc, if needed. */ |
10203 | if (h->needs_copy) | |
10204 | { | |
10205 | asection *s; | |
10206 | bfd_vma symval; | |
10207 | ||
10208 | BFD_ASSERT (h->dynindx != -1); | |
10209 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10210 | ||
10211 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10212 | symval = (h->root.u.def.section->output_section->vma | |
10213 | + h->root.u.def.section->output_offset | |
10214 | + h->root.u.def.value); | |
10215 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
10216 | h->dynindx, R_MIPS_COPY, symval); | |
10217 | } | |
10218 | ||
b49e97c9 TS |
10219 | /* Handle the IRIX6-specific symbols. */ |
10220 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
10221 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
10222 | ||
738e5348 RS |
10223 | /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to |
10224 | treat MIPS16 symbols like any other. */ | |
30c09090 | 10225 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
10226 | { |
10227 | BFD_ASSERT (sym->st_value & 1); | |
10228 | sym->st_other -= STO_MIPS16; | |
10229 | } | |
b49e97c9 | 10230 | |
b34976b6 | 10231 | return TRUE; |
b49e97c9 TS |
10232 | } |
10233 | ||
0a44bf69 RS |
10234 | /* Likewise, for VxWorks. */ |
10235 | ||
10236 | bfd_boolean | |
10237 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
10238 | struct bfd_link_info *info, | |
10239 | struct elf_link_hash_entry *h, | |
10240 | Elf_Internal_Sym *sym) | |
10241 | { | |
10242 | bfd *dynobj; | |
10243 | asection *sgot; | |
10244 | struct mips_got_info *g; | |
10245 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 10246 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
10247 | |
10248 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10249 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 10250 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 10251 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 RS |
10252 | |
10253 | if (h->plt.offset != (bfd_vma) -1) | |
10254 | { | |
6d79d2ed | 10255 | bfd_byte *loc; |
0a44bf69 RS |
10256 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
10257 | Elf_Internal_Rela rel; | |
10258 | static const bfd_vma *plt_entry; | |
10259 | ||
10260 | BFD_ASSERT (h->dynindx != -1); | |
10261 | BFD_ASSERT (htab->splt != NULL); | |
10262 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
10263 | ||
10264 | /* Calculate the address of the .plt entry. */ | |
10265 | plt_address = (htab->splt->output_section->vma | |
10266 | + htab->splt->output_offset | |
10267 | + h->plt.offset); | |
10268 | ||
10269 | /* Calculate the index of the entry. */ | |
10270 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
10271 | / htab->plt_entry_size); | |
10272 | ||
10273 | /* Calculate the address of the .got.plt entry. */ | |
10274 | got_address = (htab->sgotplt->output_section->vma | |
10275 | + htab->sgotplt->output_offset | |
10276 | + plt_index * 4); | |
10277 | ||
10278 | /* Calculate the offset of the .got.plt entry from | |
10279 | _GLOBAL_OFFSET_TABLE_. */ | |
10280 | got_offset = mips_elf_gotplt_index (info, h); | |
10281 | ||
10282 | /* Calculate the offset for the branch at the start of the PLT | |
10283 | entry. The branch jumps to the beginning of .plt. */ | |
10284 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
10285 | ||
10286 | /* Fill in the initial value of the .got.plt entry. */ | |
10287 | bfd_put_32 (output_bfd, plt_address, | |
10288 | htab->sgotplt->contents + plt_index * 4); | |
10289 | ||
10290 | /* Find out where the .plt entry should go. */ | |
10291 | loc = htab->splt->contents + h->plt.offset; | |
10292 | ||
10293 | if (info->shared) | |
10294 | { | |
10295 | plt_entry = mips_vxworks_shared_plt_entry; | |
10296 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10297 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10298 | } | |
10299 | else | |
10300 | { | |
10301 | bfd_vma got_address_high, got_address_low; | |
10302 | ||
10303 | plt_entry = mips_vxworks_exec_plt_entry; | |
10304 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
10305 | got_address_low = got_address & 0xffff; | |
10306 | ||
10307 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
10308 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
10309 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
10310 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
10311 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10312 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10313 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10314 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10315 | ||
10316 | loc = (htab->srelplt2->contents | |
10317 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
10318 | ||
10319 | /* Emit a relocation for the .got.plt entry. */ | |
10320 | rel.r_offset = got_address; | |
10321 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10322 | rel.r_addend = h->plt.offset; | |
10323 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10324 | ||
10325 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
10326 | loc += sizeof (Elf32_External_Rela); | |
10327 | rel.r_offset = plt_address + 8; | |
10328 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10329 | rel.r_addend = got_offset; | |
10330 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10331 | ||
10332 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
10333 | loc += sizeof (Elf32_External_Rela); | |
10334 | rel.r_offset += 4; | |
10335 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10336 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10337 | } | |
10338 | ||
10339 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
10340 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
10341 | rel.r_offset = got_address; | |
10342 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
10343 | rel.r_addend = 0; | |
10344 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10345 | ||
10346 | if (!h->def_regular) | |
10347 | sym->st_shndx = SHN_UNDEF; | |
10348 | } | |
10349 | ||
10350 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
10351 | ||
23cc69b6 | 10352 | sgot = htab->sgot; |
a8028dd0 | 10353 | g = htab->got_info; |
0a44bf69 RS |
10354 | BFD_ASSERT (g != NULL); |
10355 | ||
10356 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 10357 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
10358 | { |
10359 | bfd_vma offset; | |
10360 | Elf_Internal_Rela outrel; | |
10361 | bfd_byte *loc; | |
10362 | asection *s; | |
10363 | ||
10364 | /* Install the symbol value in the GOT. */ | |
10365 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, | |
10366 | R_MIPS_GOT16, info); | |
10367 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); | |
10368 | ||
10369 | /* Add a dynamic relocation for it. */ | |
10370 | s = mips_elf_rel_dyn_section (info, FALSE); | |
10371 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
10372 | outrel.r_offset = (sgot->output_section->vma | |
10373 | + sgot->output_offset | |
10374 | + offset); | |
10375 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
10376 | outrel.r_addend = 0; | |
10377 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
10378 | } | |
10379 | ||
10380 | /* Emit a copy reloc, if needed. */ | |
10381 | if (h->needs_copy) | |
10382 | { | |
10383 | Elf_Internal_Rela rel; | |
10384 | ||
10385 | BFD_ASSERT (h->dynindx != -1); | |
10386 | ||
10387 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
10388 | + h->root.u.def.section->output_offset | |
10389 | + h->root.u.def.value); | |
10390 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
10391 | rel.r_addend = 0; | |
10392 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
10393 | htab->srelbss->contents | |
10394 | + (htab->srelbss->reloc_count | |
10395 | * sizeof (Elf32_External_Rela))); | |
10396 | ++htab->srelbss->reloc_count; | |
10397 | } | |
10398 | ||
df58fc94 RS |
10399 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
10400 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
10401 | sym->st_value &= ~1; |
10402 | ||
10403 | return TRUE; | |
10404 | } | |
10405 | ||
861fb55a DJ |
10406 | /* Write out a plt0 entry to the beginning of .plt. */ |
10407 | ||
10408 | static void | |
10409 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10410 | { | |
10411 | bfd_byte *loc; | |
10412 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
10413 | static const bfd_vma *plt_entry; | |
10414 | struct mips_elf_link_hash_table *htab; | |
10415 | ||
10416 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10417 | BFD_ASSERT (htab != NULL); |
10418 | ||
861fb55a DJ |
10419 | if (ABI_64_P (output_bfd)) |
10420 | plt_entry = mips_n64_exec_plt0_entry; | |
10421 | else if (ABI_N32_P (output_bfd)) | |
10422 | plt_entry = mips_n32_exec_plt0_entry; | |
10423 | else | |
10424 | plt_entry = mips_o32_exec_plt0_entry; | |
10425 | ||
10426 | /* Calculate the value of .got.plt. */ | |
10427 | gotplt_value = (htab->sgotplt->output_section->vma | |
10428 | + htab->sgotplt->output_offset); | |
10429 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; | |
10430 | gotplt_value_low = gotplt_value & 0xffff; | |
10431 | ||
10432 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
10433 | not be loaded in two instructions. */ | |
10434 | BFD_ASSERT ((gotplt_value & ~(bfd_vma) 0x7fffffff) == 0 | |
10435 | || ~(gotplt_value | 0x7fffffff) == 0); | |
10436 | ||
10437 | /* Install the PLT header. */ | |
10438 | loc = htab->splt->contents; | |
10439 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
10440 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
10441 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
10442 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10443 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10444 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10445 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
10446 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
10447 | } | |
10448 | ||
0a44bf69 RS |
10449 | /* Install the PLT header for a VxWorks executable and finalize the |
10450 | contents of .rela.plt.unloaded. */ | |
10451 | ||
10452 | static void | |
10453 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10454 | { | |
10455 | Elf_Internal_Rela rela; | |
10456 | bfd_byte *loc; | |
10457 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
10458 | static const bfd_vma *plt_entry; | |
10459 | struct mips_elf_link_hash_table *htab; | |
10460 | ||
10461 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
10462 | BFD_ASSERT (htab != NULL); |
10463 | ||
0a44bf69 RS |
10464 | plt_entry = mips_vxworks_exec_plt0_entry; |
10465 | ||
10466 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
10467 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
10468 | + htab->root.hgot->root.u.def.section->output_offset | |
10469 | + htab->root.hgot->root.u.def.value); | |
10470 | ||
10471 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
10472 | got_value_low = got_value & 0xffff; | |
10473 | ||
10474 | /* Calculate the address of the PLT header. */ | |
10475 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
10476 | ||
10477 | /* Install the PLT header. */ | |
10478 | loc = htab->splt->contents; | |
10479 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
10480 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
10481 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
10482 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
10483 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
10484 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
10485 | ||
10486 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
10487 | loc = htab->srelplt2->contents; | |
10488 | rela.r_offset = plt_address; | |
10489 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10490 | rela.r_addend = 0; | |
10491 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10492 | loc += sizeof (Elf32_External_Rela); | |
10493 | ||
10494 | /* Output the relocation for the following addiu of | |
10495 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
10496 | rela.r_offset += 4; | |
10497 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10498 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10499 | loc += sizeof (Elf32_External_Rela); | |
10500 | ||
10501 | /* Fix up the remaining relocations. They may have the wrong | |
10502 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10503 | in which symbols were output. */ | |
10504 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10505 | { | |
10506 | Elf_Internal_Rela rel; | |
10507 | ||
10508 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10509 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
10510 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10511 | loc += sizeof (Elf32_External_Rela); | |
10512 | ||
10513 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10514 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
10515 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10516 | loc += sizeof (Elf32_External_Rela); | |
10517 | ||
10518 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
10519 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
10520 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
10521 | loc += sizeof (Elf32_External_Rela); | |
10522 | } | |
10523 | } | |
10524 | ||
10525 | /* Install the PLT header for a VxWorks shared library. */ | |
10526 | ||
10527 | static void | |
10528 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
10529 | { | |
10530 | unsigned int i; | |
10531 | struct mips_elf_link_hash_table *htab; | |
10532 | ||
10533 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10534 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
10535 | |
10536 | /* We just need to copy the entry byte-by-byte. */ | |
10537 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
10538 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
10539 | htab->splt->contents + i * 4); | |
10540 | } | |
10541 | ||
b49e97c9 TS |
10542 | /* Finish up the dynamic sections. */ |
10543 | ||
b34976b6 | 10544 | bfd_boolean |
9719ad41 RS |
10545 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
10546 | struct bfd_link_info *info) | |
b49e97c9 TS |
10547 | { |
10548 | bfd *dynobj; | |
10549 | asection *sdyn; | |
10550 | asection *sgot; | |
f4416af6 | 10551 | struct mips_got_info *gg, *g; |
0a44bf69 | 10552 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 10553 | |
0a44bf69 | 10554 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
10555 | BFD_ASSERT (htab != NULL); |
10556 | ||
b49e97c9 TS |
10557 | dynobj = elf_hash_table (info)->dynobj; |
10558 | ||
3d4d4302 | 10559 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 10560 | |
23cc69b6 RS |
10561 | sgot = htab->sgot; |
10562 | gg = htab->got_info; | |
b49e97c9 TS |
10563 | |
10564 | if (elf_hash_table (info)->dynamic_sections_created) | |
10565 | { | |
10566 | bfd_byte *b; | |
943284cc | 10567 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
10568 | |
10569 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
10570 | BFD_ASSERT (gg != NULL); |
10571 | ||
10572 | g = mips_elf_got_for_ibfd (gg, output_bfd); | |
b49e97c9 TS |
10573 | BFD_ASSERT (g != NULL); |
10574 | ||
10575 | for (b = sdyn->contents; | |
eea6121a | 10576 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
10577 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
10578 | { | |
10579 | Elf_Internal_Dyn dyn; | |
10580 | const char *name; | |
10581 | size_t elemsize; | |
10582 | asection *s; | |
b34976b6 | 10583 | bfd_boolean swap_out_p; |
b49e97c9 TS |
10584 | |
10585 | /* Read in the current dynamic entry. */ | |
10586 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10587 | ||
10588 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 10589 | swap_out_p = TRUE; |
b49e97c9 TS |
10590 | |
10591 | switch (dyn.d_tag) | |
10592 | { | |
10593 | case DT_RELENT: | |
b49e97c9 TS |
10594 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
10595 | break; | |
10596 | ||
0a44bf69 RS |
10597 | case DT_RELAENT: |
10598 | BFD_ASSERT (htab->is_vxworks); | |
10599 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
10600 | break; | |
10601 | ||
b49e97c9 TS |
10602 | case DT_STRSZ: |
10603 | /* Rewrite DT_STRSZ. */ | |
10604 | dyn.d_un.d_val = | |
10605 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
10606 | break; | |
10607 | ||
10608 | case DT_PLTGOT: | |
861fb55a DJ |
10609 | s = htab->sgot; |
10610 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
10611 | break; | |
10612 | ||
10613 | case DT_MIPS_PLTGOT: | |
10614 | s = htab->sgotplt; | |
10615 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
b49e97c9 TS |
10616 | break; |
10617 | ||
10618 | case DT_MIPS_RLD_VERSION: | |
10619 | dyn.d_un.d_val = 1; /* XXX */ | |
10620 | break; | |
10621 | ||
10622 | case DT_MIPS_FLAGS: | |
10623 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
10624 | break; | |
10625 | ||
b49e97c9 | 10626 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
10627 | { |
10628 | time_t t; | |
10629 | time (&t); | |
10630 | dyn.d_un.d_val = t; | |
10631 | } | |
b49e97c9 TS |
10632 | break; |
10633 | ||
10634 | case DT_MIPS_ICHECKSUM: | |
10635 | /* XXX FIXME: */ | |
b34976b6 | 10636 | swap_out_p = FALSE; |
b49e97c9 TS |
10637 | break; |
10638 | ||
10639 | case DT_MIPS_IVERSION: | |
10640 | /* XXX FIXME: */ | |
b34976b6 | 10641 | swap_out_p = FALSE; |
b49e97c9 TS |
10642 | break; |
10643 | ||
10644 | case DT_MIPS_BASE_ADDRESS: | |
10645 | s = output_bfd->sections; | |
10646 | BFD_ASSERT (s != NULL); | |
10647 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
10648 | break; | |
10649 | ||
10650 | case DT_MIPS_LOCAL_GOTNO: | |
10651 | dyn.d_un.d_val = g->local_gotno; | |
10652 | break; | |
10653 | ||
10654 | case DT_MIPS_UNREFEXTNO: | |
10655 | /* The index into the dynamic symbol table which is the | |
10656 | entry of the first external symbol that is not | |
10657 | referenced within the same object. */ | |
10658 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
10659 | break; | |
10660 | ||
10661 | case DT_MIPS_GOTSYM: | |
f4416af6 | 10662 | if (gg->global_gotsym) |
b49e97c9 | 10663 | { |
f4416af6 | 10664 | dyn.d_un.d_val = gg->global_gotsym->dynindx; |
b49e97c9 TS |
10665 | break; |
10666 | } | |
10667 | /* In case if we don't have global got symbols we default | |
10668 | to setting DT_MIPS_GOTSYM to the same value as | |
10669 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
10670 | ||
10671 | case DT_MIPS_SYMTABNO: | |
10672 | name = ".dynsym"; | |
10673 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
10674 | s = bfd_get_section_by_name (output_bfd, name); | |
10675 | BFD_ASSERT (s != NULL); | |
10676 | ||
eea6121a | 10677 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
10678 | break; |
10679 | ||
10680 | case DT_MIPS_HIPAGENO: | |
861fb55a | 10681 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
10682 | break; |
10683 | ||
10684 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
10685 | { |
10686 | struct elf_link_hash_entry *h; | |
10687 | h = mips_elf_hash_table (info)->rld_symbol; | |
10688 | if (!h) | |
10689 | { | |
10690 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10691 | swap_out_p = FALSE; | |
10692 | break; | |
10693 | } | |
10694 | s = h->root.u.def.section; | |
10695 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset | |
10696 | + h->root.u.def.value); | |
10697 | } | |
b49e97c9 TS |
10698 | break; |
10699 | ||
10700 | case DT_MIPS_OPTIONS: | |
10701 | s = (bfd_get_section_by_name | |
10702 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
10703 | dyn.d_un.d_ptr = s->vma; | |
10704 | break; | |
10705 | ||
0a44bf69 RS |
10706 | case DT_RELASZ: |
10707 | BFD_ASSERT (htab->is_vxworks); | |
10708 | /* The count does not include the JUMP_SLOT relocations. */ | |
10709 | if (htab->srelplt) | |
10710 | dyn.d_un.d_val -= htab->srelplt->size; | |
10711 | break; | |
10712 | ||
10713 | case DT_PLTREL: | |
861fb55a DJ |
10714 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10715 | if (htab->is_vxworks) | |
10716 | dyn.d_un.d_val = DT_RELA; | |
10717 | else | |
10718 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
10719 | break; |
10720 | ||
10721 | case DT_PLTRELSZ: | |
861fb55a | 10722 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
0a44bf69 RS |
10723 | dyn.d_un.d_val = htab->srelplt->size; |
10724 | break; | |
10725 | ||
10726 | case DT_JMPREL: | |
861fb55a DJ |
10727 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
10728 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma | |
0a44bf69 RS |
10729 | + htab->srelplt->output_offset); |
10730 | break; | |
10731 | ||
943284cc DJ |
10732 | case DT_TEXTREL: |
10733 | /* If we didn't need any text relocations after all, delete | |
10734 | the dynamic tag. */ | |
10735 | if (!(info->flags & DF_TEXTREL)) | |
10736 | { | |
10737 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
10738 | swap_out_p = FALSE; | |
10739 | } | |
10740 | break; | |
10741 | ||
10742 | case DT_FLAGS: | |
10743 | /* If we didn't need any text relocations after all, clear | |
10744 | DF_TEXTREL from DT_FLAGS. */ | |
10745 | if (!(info->flags & DF_TEXTREL)) | |
10746 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
10747 | else | |
10748 | swap_out_p = FALSE; | |
10749 | break; | |
10750 | ||
b49e97c9 | 10751 | default: |
b34976b6 | 10752 | swap_out_p = FALSE; |
7a2b07ff NS |
10753 | if (htab->is_vxworks |
10754 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10755 | swap_out_p = TRUE; | |
b49e97c9 TS |
10756 | break; |
10757 | } | |
10758 | ||
943284cc | 10759 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 10760 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
10761 | (dynobj, &dyn, b - dyn_skipped); |
10762 | ||
10763 | if (dyn_to_skip) | |
10764 | { | |
10765 | dyn_skipped += dyn_to_skip; | |
10766 | dyn_to_skip = 0; | |
10767 | } | |
b49e97c9 | 10768 | } |
943284cc DJ |
10769 | |
10770 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
10771 | if (dyn_skipped > 0) | |
10772 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
10773 | } |
10774 | ||
b55fd4d4 DJ |
10775 | if (sgot != NULL && sgot->size > 0 |
10776 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 10777 | { |
0a44bf69 RS |
10778 | if (htab->is_vxworks) |
10779 | { | |
10780 | /* The first entry of the global offset table points to the | |
10781 | ".dynamic" section. The second is initialized by the | |
10782 | loader and contains the shared library identifier. | |
10783 | The third is also initialized by the loader and points | |
10784 | to the lazy resolution stub. */ | |
10785 | MIPS_ELF_PUT_WORD (output_bfd, | |
10786 | sdyn->output_offset + sdyn->output_section->vma, | |
10787 | sgot->contents); | |
10788 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10789 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
10790 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
10791 | sgot->contents | |
10792 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
10793 | } | |
10794 | else | |
10795 | { | |
10796 | /* The first entry of the global offset table will be filled at | |
10797 | runtime. The second entry will be used by some runtime loaders. | |
10798 | This isn't the case of IRIX rld. */ | |
10799 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 10800 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
10801 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
10802 | } | |
b49e97c9 | 10803 | |
54938e2a TS |
10804 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
10805 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
10806 | } | |
b49e97c9 | 10807 | |
f4416af6 AO |
10808 | /* Generate dynamic relocations for the non-primary gots. */ |
10809 | if (gg != NULL && gg->next) | |
10810 | { | |
10811 | Elf_Internal_Rela rel[3]; | |
10812 | bfd_vma addend = 0; | |
10813 | ||
10814 | memset (rel, 0, sizeof (rel)); | |
10815 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
10816 | ||
10817 | for (g = gg->next; g->next != gg; g = g->next) | |
10818 | { | |
91d6fa6a | 10819 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 10820 | + g->next->tls_gotno; |
f4416af6 | 10821 | |
9719ad41 | 10822 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 10823 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
10824 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
10825 | sgot->contents | |
91d6fa6a | 10826 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 AO |
10827 | |
10828 | if (! info->shared) | |
10829 | continue; | |
10830 | ||
91d6fa6a | 10831 | while (got_index < g->assigned_gotno) |
f4416af6 AO |
10832 | { |
10833 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
91d6fa6a | 10834 | = got_index++ * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
10835 | if (!(mips_elf_create_dynamic_relocation |
10836 | (output_bfd, info, rel, NULL, | |
10837 | bfd_abs_section_ptr, | |
10838 | 0, &addend, sgot))) | |
10839 | return FALSE; | |
10840 | BFD_ASSERT (addend == 0); | |
10841 | } | |
10842 | } | |
10843 | } | |
10844 | ||
3133ddbf DJ |
10845 | /* The generation of dynamic relocations for the non-primary gots |
10846 | adds more dynamic relocations. We cannot count them until | |
10847 | here. */ | |
10848 | ||
10849 | if (elf_hash_table (info)->dynamic_sections_created) | |
10850 | { | |
10851 | bfd_byte *b; | |
10852 | bfd_boolean swap_out_p; | |
10853 | ||
10854 | BFD_ASSERT (sdyn != NULL); | |
10855 | ||
10856 | for (b = sdyn->contents; | |
10857 | b < sdyn->contents + sdyn->size; | |
10858 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
10859 | { | |
10860 | Elf_Internal_Dyn dyn; | |
10861 | asection *s; | |
10862 | ||
10863 | /* Read in the current dynamic entry. */ | |
10864 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
10865 | ||
10866 | /* Assume that we're going to modify it and write it out. */ | |
10867 | swap_out_p = TRUE; | |
10868 | ||
10869 | switch (dyn.d_tag) | |
10870 | { | |
10871 | case DT_RELSZ: | |
10872 | /* Reduce DT_RELSZ to account for any relocations we | |
10873 | decided not to make. This is for the n64 irix rld, | |
10874 | which doesn't seem to apply any relocations if there | |
10875 | are trailing null entries. */ | |
0a44bf69 | 10876 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
10877 | dyn.d_un.d_val = (s->reloc_count |
10878 | * (ABI_64_P (output_bfd) | |
10879 | ? sizeof (Elf64_Mips_External_Rel) | |
10880 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
10881 | /* Adjust the section size too. Tools like the prelinker |
10882 | can reasonably expect the values to the same. */ | |
10883 | elf_section_data (s->output_section)->this_hdr.sh_size | |
10884 | = dyn.d_un.d_val; | |
3133ddbf DJ |
10885 | break; |
10886 | ||
10887 | default: | |
10888 | swap_out_p = FALSE; | |
10889 | break; | |
10890 | } | |
10891 | ||
10892 | if (swap_out_p) | |
10893 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
10894 | (dynobj, &dyn, b); | |
10895 | } | |
10896 | } | |
10897 | ||
b49e97c9 | 10898 | { |
b49e97c9 TS |
10899 | asection *s; |
10900 | Elf32_compact_rel cpt; | |
10901 | ||
b49e97c9 TS |
10902 | if (SGI_COMPAT (output_bfd)) |
10903 | { | |
10904 | /* Write .compact_rel section out. */ | |
3d4d4302 | 10905 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
10906 | if (s != NULL) |
10907 | { | |
10908 | cpt.id1 = 1; | |
10909 | cpt.num = s->reloc_count; | |
10910 | cpt.id2 = 2; | |
10911 | cpt.offset = (s->output_section->filepos | |
10912 | + sizeof (Elf32_External_compact_rel)); | |
10913 | cpt.reserved0 = 0; | |
10914 | cpt.reserved1 = 0; | |
10915 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
10916 | ((Elf32_External_compact_rel *) | |
10917 | s->contents)); | |
10918 | ||
10919 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 10920 | if (htab->sstubs != NULL) |
b49e97c9 TS |
10921 | { |
10922 | file_ptr dummy_offset; | |
10923 | ||
4e41d0d7 RS |
10924 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
10925 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
10926 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 10927 | htab->function_stub_size); |
b49e97c9 TS |
10928 | } |
10929 | } | |
10930 | } | |
10931 | ||
0a44bf69 RS |
10932 | /* The psABI says that the dynamic relocations must be sorted in |
10933 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
10934 | this, and because the code below handles REL rather than RELA | |
10935 | relocations, using it for VxWorks would be outright harmful. */ | |
10936 | if (!htab->is_vxworks) | |
b49e97c9 | 10937 | { |
0a44bf69 RS |
10938 | s = mips_elf_rel_dyn_section (info, FALSE); |
10939 | if (s != NULL | |
10940 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
10941 | { | |
10942 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 10943 | |
0a44bf69 RS |
10944 | if (ABI_64_P (output_bfd)) |
10945 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
10946 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
10947 | sort_dynamic_relocs_64); | |
10948 | else | |
10949 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
10950 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
10951 | sort_dynamic_relocs); | |
10952 | } | |
b49e97c9 | 10953 | } |
b49e97c9 TS |
10954 | } |
10955 | ||
861fb55a | 10956 | if (htab->splt && htab->splt->size > 0) |
0a44bf69 | 10957 | { |
861fb55a DJ |
10958 | if (htab->is_vxworks) |
10959 | { | |
10960 | if (info->shared) | |
10961 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
10962 | else | |
10963 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
10964 | } | |
0a44bf69 | 10965 | else |
861fb55a DJ |
10966 | { |
10967 | BFD_ASSERT (!info->shared); | |
10968 | mips_finish_exec_plt (output_bfd, info); | |
10969 | } | |
0a44bf69 | 10970 | } |
b34976b6 | 10971 | return TRUE; |
b49e97c9 TS |
10972 | } |
10973 | ||
b49e97c9 | 10974 | |
64543e1a RS |
10975 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
10976 | ||
10977 | static void | |
9719ad41 | 10978 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 10979 | { |
64543e1a | 10980 | flagword val; |
b49e97c9 TS |
10981 | |
10982 | switch (bfd_get_mach (abfd)) | |
10983 | { | |
10984 | default: | |
10985 | case bfd_mach_mips3000: | |
10986 | val = E_MIPS_ARCH_1; | |
10987 | break; | |
10988 | ||
10989 | case bfd_mach_mips3900: | |
10990 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
10991 | break; | |
10992 | ||
10993 | case bfd_mach_mips6000: | |
10994 | val = E_MIPS_ARCH_2; | |
10995 | break; | |
10996 | ||
10997 | case bfd_mach_mips4000: | |
10998 | case bfd_mach_mips4300: | |
10999 | case bfd_mach_mips4400: | |
11000 | case bfd_mach_mips4600: | |
11001 | val = E_MIPS_ARCH_3; | |
11002 | break; | |
11003 | ||
11004 | case bfd_mach_mips4010: | |
11005 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
11006 | break; | |
11007 | ||
11008 | case bfd_mach_mips4100: | |
11009 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
11010 | break; | |
11011 | ||
11012 | case bfd_mach_mips4111: | |
11013 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
11014 | break; | |
11015 | ||
00707a0e RS |
11016 | case bfd_mach_mips4120: |
11017 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
11018 | break; | |
11019 | ||
b49e97c9 TS |
11020 | case bfd_mach_mips4650: |
11021 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
11022 | break; | |
11023 | ||
00707a0e RS |
11024 | case bfd_mach_mips5400: |
11025 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
11026 | break; | |
11027 | ||
11028 | case bfd_mach_mips5500: | |
11029 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
11030 | break; | |
11031 | ||
e407c74b NC |
11032 | case bfd_mach_mips5900: |
11033 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
11034 | break; | |
11035 | ||
0d2e43ed ILT |
11036 | case bfd_mach_mips9000: |
11037 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
11038 | break; | |
11039 | ||
b49e97c9 | 11040 | case bfd_mach_mips5000: |
5a7ea749 | 11041 | case bfd_mach_mips7000: |
b49e97c9 TS |
11042 | case bfd_mach_mips8000: |
11043 | case bfd_mach_mips10000: | |
11044 | case bfd_mach_mips12000: | |
3aa3176b TS |
11045 | case bfd_mach_mips14000: |
11046 | case bfd_mach_mips16000: | |
b49e97c9 TS |
11047 | val = E_MIPS_ARCH_4; |
11048 | break; | |
11049 | ||
11050 | case bfd_mach_mips5: | |
11051 | val = E_MIPS_ARCH_5; | |
11052 | break; | |
11053 | ||
350cc38d MS |
11054 | case bfd_mach_mips_loongson_2e: |
11055 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
11056 | break; | |
11057 | ||
11058 | case bfd_mach_mips_loongson_2f: | |
11059 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
11060 | break; | |
11061 | ||
b49e97c9 TS |
11062 | case bfd_mach_mips_sb1: |
11063 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
11064 | break; | |
11065 | ||
d051516a NC |
11066 | case bfd_mach_mips_loongson_3a: |
11067 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_LS3A; | |
11068 | break; | |
11069 | ||
6f179bd0 | 11070 | case bfd_mach_mips_octeon: |
dd6a37e7 | 11071 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
11072 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
11073 | break; | |
11074 | ||
52b6b6b9 JM |
11075 | case bfd_mach_mips_xlr: |
11076 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
11077 | break; | |
11078 | ||
432233b3 AP |
11079 | case bfd_mach_mips_octeon2: |
11080 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
11081 | break; | |
11082 | ||
b49e97c9 TS |
11083 | case bfd_mach_mipsisa32: |
11084 | val = E_MIPS_ARCH_32; | |
11085 | break; | |
11086 | ||
11087 | case bfd_mach_mipsisa64: | |
11088 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
11089 | break; |
11090 | ||
11091 | case bfd_mach_mipsisa32r2: | |
11092 | val = E_MIPS_ARCH_32R2; | |
11093 | break; | |
5f74bc13 CD |
11094 | |
11095 | case bfd_mach_mipsisa64r2: | |
11096 | val = E_MIPS_ARCH_64R2; | |
11097 | break; | |
b49e97c9 | 11098 | } |
b49e97c9 TS |
11099 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
11100 | elf_elfheader (abfd)->e_flags |= val; | |
11101 | ||
64543e1a RS |
11102 | } |
11103 | ||
11104 | ||
11105 | /* The final processing done just before writing out a MIPS ELF object | |
11106 | file. This gets the MIPS architecture right based on the machine | |
11107 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
11108 | ||
11109 | void | |
9719ad41 RS |
11110 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
11111 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
11112 | { |
11113 | unsigned int i; | |
11114 | Elf_Internal_Shdr **hdrpp; | |
11115 | const char *name; | |
11116 | asection *sec; | |
11117 | ||
11118 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
11119 | is nonzero. This is for compatibility with old objects, which used | |
11120 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
11121 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
11122 | mips_set_isa_flags (abfd); | |
11123 | ||
b49e97c9 TS |
11124 | /* Set the sh_info field for .gptab sections and other appropriate |
11125 | info for each special section. */ | |
11126 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
11127 | i < elf_numsections (abfd); | |
11128 | i++, hdrpp++) | |
11129 | { | |
11130 | switch ((*hdrpp)->sh_type) | |
11131 | { | |
11132 | case SHT_MIPS_MSYM: | |
11133 | case SHT_MIPS_LIBLIST: | |
11134 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
11135 | if (sec != NULL) | |
11136 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11137 | break; | |
11138 | ||
11139 | case SHT_MIPS_GPTAB: | |
11140 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11141 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11142 | BFD_ASSERT (name != NULL | |
0112cd26 | 11143 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
11144 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
11145 | BFD_ASSERT (sec != NULL); | |
11146 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11147 | break; | |
11148 | ||
11149 | case SHT_MIPS_CONTENT: | |
11150 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11151 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11152 | BFD_ASSERT (name != NULL | |
0112cd26 | 11153 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
11154 | sec = bfd_get_section_by_name (abfd, |
11155 | name + sizeof ".MIPS.content" - 1); | |
11156 | BFD_ASSERT (sec != NULL); | |
11157 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11158 | break; | |
11159 | ||
11160 | case SHT_MIPS_SYMBOL_LIB: | |
11161 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
11162 | if (sec != NULL) | |
11163 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11164 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
11165 | if (sec != NULL) | |
11166 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
11167 | break; | |
11168 | ||
11169 | case SHT_MIPS_EVENTS: | |
11170 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
11171 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
11172 | BFD_ASSERT (name != NULL); | |
0112cd26 | 11173 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
11174 | sec = bfd_get_section_by_name (abfd, |
11175 | name + sizeof ".MIPS.events" - 1); | |
11176 | else | |
11177 | { | |
0112cd26 | 11178 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
11179 | sec = bfd_get_section_by_name (abfd, |
11180 | (name | |
11181 | + sizeof ".MIPS.post_rel" - 1)); | |
11182 | } | |
11183 | BFD_ASSERT (sec != NULL); | |
11184 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
11185 | break; | |
11186 | ||
11187 | } | |
11188 | } | |
11189 | } | |
11190 | \f | |
8dc1a139 | 11191 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
11192 | segments. */ |
11193 | ||
11194 | int | |
a6b96beb AM |
11195 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
11196 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11197 | { |
11198 | asection *s; | |
11199 | int ret = 0; | |
11200 | ||
11201 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
11202 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11203 | if (s && (s->flags & SEC_LOAD)) | |
11204 | ++ret; | |
11205 | ||
11206 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
11207 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
11208 | && bfd_get_section_by_name (abfd, | |
11209 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
11210 | ++ret; | |
11211 | ||
11212 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
11213 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
11214 | && bfd_get_section_by_name (abfd, ".dynamic") | |
11215 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
11216 | ++ret; | |
11217 | ||
98c904a8 RS |
11218 | /* Allocate a PT_NULL header in dynamic objects. See |
11219 | _bfd_mips_elf_modify_segment_map for details. */ | |
11220 | if (!SGI_COMPAT (abfd) | |
11221 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
11222 | ++ret; | |
11223 | ||
b49e97c9 TS |
11224 | return ret; |
11225 | } | |
11226 | ||
8dc1a139 | 11227 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 11228 | |
b34976b6 | 11229 | bfd_boolean |
9719ad41 | 11230 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 11231 | struct bfd_link_info *info) |
b49e97c9 TS |
11232 | { |
11233 | asection *s; | |
11234 | struct elf_segment_map *m, **pm; | |
11235 | bfd_size_type amt; | |
11236 | ||
11237 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
11238 | segment. */ | |
11239 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
11240 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11241 | { | |
11242 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
11243 | if (m->p_type == PT_MIPS_REGINFO) | |
11244 | break; | |
11245 | if (m == NULL) | |
11246 | { | |
11247 | amt = sizeof *m; | |
9719ad41 | 11248 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11249 | if (m == NULL) |
b34976b6 | 11250 | return FALSE; |
b49e97c9 TS |
11251 | |
11252 | m->p_type = PT_MIPS_REGINFO; | |
11253 | m->count = 1; | |
11254 | m->sections[0] = s; | |
11255 | ||
11256 | /* We want to put it after the PHDR and INTERP segments. */ | |
11257 | pm = &elf_tdata (abfd)->segment_map; | |
11258 | while (*pm != NULL | |
11259 | && ((*pm)->p_type == PT_PHDR | |
11260 | || (*pm)->p_type == PT_INTERP)) | |
11261 | pm = &(*pm)->next; | |
11262 | ||
11263 | m->next = *pm; | |
11264 | *pm = m; | |
11265 | } | |
11266 | } | |
11267 | ||
11268 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
11269 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 11270 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 11271 | table. */ |
c1fd6598 AO |
11272 | if (NEWABI_P (abfd) |
11273 | /* On non-IRIX6 new abi, we'll have already created a segment | |
11274 | for this section, so don't create another. I'm not sure this | |
11275 | is not also the case for IRIX 6, but I can't test it right | |
11276 | now. */ | |
11277 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
11278 | { |
11279 | for (s = abfd->sections; s; s = s->next) | |
11280 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
11281 | break; | |
11282 | ||
11283 | if (s) | |
11284 | { | |
11285 | struct elf_segment_map *options_segment; | |
11286 | ||
98a8deaf RS |
11287 | pm = &elf_tdata (abfd)->segment_map; |
11288 | while (*pm != NULL | |
11289 | && ((*pm)->p_type == PT_PHDR | |
11290 | || (*pm)->p_type == PT_INTERP)) | |
11291 | pm = &(*pm)->next; | |
b49e97c9 | 11292 | |
8ded5a0f AM |
11293 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
11294 | { | |
11295 | amt = sizeof (struct elf_segment_map); | |
11296 | options_segment = bfd_zalloc (abfd, amt); | |
11297 | options_segment->next = *pm; | |
11298 | options_segment->p_type = PT_MIPS_OPTIONS; | |
11299 | options_segment->p_flags = PF_R; | |
11300 | options_segment->p_flags_valid = TRUE; | |
11301 | options_segment->count = 1; | |
11302 | options_segment->sections[0] = s; | |
11303 | *pm = options_segment; | |
11304 | } | |
b49e97c9 TS |
11305 | } |
11306 | } | |
11307 | else | |
11308 | { | |
11309 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
11310 | { | |
11311 | /* If there are .dynamic and .mdebug sections, we make a room | |
11312 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
11313 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
11314 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
11315 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
11316 | { | |
11317 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
11318 | if (m->p_type == PT_MIPS_RTPROC) | |
11319 | break; | |
11320 | if (m == NULL) | |
11321 | { | |
11322 | amt = sizeof *m; | |
9719ad41 | 11323 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 11324 | if (m == NULL) |
b34976b6 | 11325 | return FALSE; |
b49e97c9 TS |
11326 | |
11327 | m->p_type = PT_MIPS_RTPROC; | |
11328 | ||
11329 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
11330 | if (s == NULL) | |
11331 | { | |
11332 | m->count = 0; | |
11333 | m->p_flags = 0; | |
11334 | m->p_flags_valid = 1; | |
11335 | } | |
11336 | else | |
11337 | { | |
11338 | m->count = 1; | |
11339 | m->sections[0] = s; | |
11340 | } | |
11341 | ||
11342 | /* We want to put it after the DYNAMIC segment. */ | |
11343 | pm = &elf_tdata (abfd)->segment_map; | |
11344 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
11345 | pm = &(*pm)->next; | |
11346 | if (*pm != NULL) | |
11347 | pm = &(*pm)->next; | |
11348 | ||
11349 | m->next = *pm; | |
11350 | *pm = m; | |
11351 | } | |
11352 | } | |
11353 | } | |
8dc1a139 | 11354 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
11355 | .dynstr, .dynsym, and .hash sections, and everything in |
11356 | between. */ | |
11357 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; | |
11358 | pm = &(*pm)->next) | |
11359 | if ((*pm)->p_type == PT_DYNAMIC) | |
11360 | break; | |
11361 | m = *pm; | |
11362 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
11363 | { | |
11364 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
11365 | segment are read, write and execute. We do that here since | |
11366 | the code in elf.c sets only the read permission. This matters | |
11367 | sometimes for the dynamic linker. */ | |
11368 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
11369 | { | |
11370 | m->p_flags = PF_R | PF_W | PF_X; | |
11371 | m->p_flags_valid = 1; | |
11372 | } | |
11373 | } | |
f6f62d6f RS |
11374 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
11375 | glibc's dynamic linker has traditionally derived the number of | |
11376 | tags from the p_filesz field, and sometimes allocates stack | |
11377 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
11378 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
11379 | other sections can also make life hard for the prelinker, | |
11380 | which might move one of the other sections to a different | |
11381 | PT_LOAD segment. */ | |
11382 | if (SGI_COMPAT (abfd) | |
11383 | && m != NULL | |
11384 | && m->count == 1 | |
11385 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
11386 | { |
11387 | static const char *sec_names[] = | |
11388 | { | |
11389 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
11390 | }; | |
11391 | bfd_vma low, high; | |
11392 | unsigned int i, c; | |
11393 | struct elf_segment_map *n; | |
11394 | ||
792b4a53 | 11395 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
11396 | high = 0; |
11397 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
11398 | { | |
11399 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
11400 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
11401 | { | |
11402 | bfd_size_type sz; | |
11403 | ||
11404 | if (low > s->vma) | |
11405 | low = s->vma; | |
eea6121a | 11406 | sz = s->size; |
b49e97c9 TS |
11407 | if (high < s->vma + sz) |
11408 | high = s->vma + sz; | |
11409 | } | |
11410 | } | |
11411 | ||
11412 | c = 0; | |
11413 | for (s = abfd->sections; s != NULL; s = s->next) | |
11414 | if ((s->flags & SEC_LOAD) != 0 | |
11415 | && s->vma >= low | |
eea6121a | 11416 | && s->vma + s->size <= high) |
b49e97c9 TS |
11417 | ++c; |
11418 | ||
11419 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 11420 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 11421 | if (n == NULL) |
b34976b6 | 11422 | return FALSE; |
b49e97c9 TS |
11423 | *n = *m; |
11424 | n->count = c; | |
11425 | ||
11426 | i = 0; | |
11427 | for (s = abfd->sections; s != NULL; s = s->next) | |
11428 | { | |
11429 | if ((s->flags & SEC_LOAD) != 0 | |
11430 | && s->vma >= low | |
eea6121a | 11431 | && s->vma + s->size <= high) |
b49e97c9 TS |
11432 | { |
11433 | n->sections[i] = s; | |
11434 | ++i; | |
11435 | } | |
11436 | } | |
11437 | ||
11438 | *pm = n; | |
11439 | } | |
11440 | } | |
11441 | ||
98c904a8 RS |
11442 | /* Allocate a spare program header in dynamic objects so that tools |
11443 | like the prelinker can add an extra PT_LOAD entry. | |
11444 | ||
11445 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
11446 | standard procedure is to move the first (read-only) sections into | |
11447 | the new (writable) segment. However, the MIPS ABI requires | |
11448 | .dynamic to be in a read-only segment, and the section will often | |
11449 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
11450 | ||
11451 | Although the prelinker could in principle move .dynamic to a | |
11452 | writable segment, it seems better to allocate a spare program | |
11453 | header instead, and avoid the need to move any sections. | |
11454 | There is a long tradition of allocating spare dynamic tags, | |
11455 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
11456 | extension. |
11457 | ||
11458 | If INFO is NULL, we may be copying an already prelinked binary | |
11459 | with objcopy or strip, so do not add this header. */ | |
11460 | if (info != NULL | |
11461 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
11462 | && bfd_get_section_by_name (abfd, ".dynamic")) |
11463 | { | |
11464 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
11465 | if ((*pm)->p_type == PT_NULL) | |
11466 | break; | |
11467 | if (*pm == NULL) | |
11468 | { | |
11469 | m = bfd_zalloc (abfd, sizeof (*m)); | |
11470 | if (m == NULL) | |
11471 | return FALSE; | |
11472 | ||
11473 | m->p_type = PT_NULL; | |
11474 | *pm = m; | |
11475 | } | |
11476 | } | |
11477 | ||
b34976b6 | 11478 | return TRUE; |
b49e97c9 TS |
11479 | } |
11480 | \f | |
11481 | /* Return the section that should be marked against GC for a given | |
11482 | relocation. */ | |
11483 | ||
11484 | asection * | |
9719ad41 | 11485 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 11486 | struct bfd_link_info *info, |
9719ad41 RS |
11487 | Elf_Internal_Rela *rel, |
11488 | struct elf_link_hash_entry *h, | |
11489 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
11490 | { |
11491 | /* ??? Do mips16 stub sections need to be handled special? */ | |
11492 | ||
11493 | if (h != NULL) | |
07adf181 AM |
11494 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
11495 | { | |
11496 | case R_MIPS_GNU_VTINHERIT: | |
11497 | case R_MIPS_GNU_VTENTRY: | |
11498 | return NULL; | |
11499 | } | |
b49e97c9 | 11500 | |
07adf181 | 11501 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
11502 | } |
11503 | ||
11504 | /* Update the got entry reference counts for the section being removed. */ | |
11505 | ||
b34976b6 | 11506 | bfd_boolean |
9719ad41 RS |
11507 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
11508 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
11509 | asection *sec ATTRIBUTE_UNUSED, | |
11510 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
11511 | { |
11512 | #if 0 | |
11513 | Elf_Internal_Shdr *symtab_hdr; | |
11514 | struct elf_link_hash_entry **sym_hashes; | |
11515 | bfd_signed_vma *local_got_refcounts; | |
11516 | const Elf_Internal_Rela *rel, *relend; | |
11517 | unsigned long r_symndx; | |
11518 | struct elf_link_hash_entry *h; | |
11519 | ||
7dda2462 TG |
11520 | if (info->relocatable) |
11521 | return TRUE; | |
11522 | ||
b49e97c9 TS |
11523 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
11524 | sym_hashes = elf_sym_hashes (abfd); | |
11525 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
11526 | ||
11527 | relend = relocs + sec->reloc_count; | |
11528 | for (rel = relocs; rel < relend; rel++) | |
11529 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
11530 | { | |
738e5348 RS |
11531 | case R_MIPS16_GOT16: |
11532 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
11533 | case R_MIPS_GOT16: |
11534 | case R_MIPS_CALL16: | |
11535 | case R_MIPS_CALL_HI16: | |
11536 | case R_MIPS_CALL_LO16: | |
11537 | case R_MIPS_GOT_HI16: | |
11538 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
11539 | case R_MIPS_GOT_DISP: |
11540 | case R_MIPS_GOT_PAGE: | |
11541 | case R_MIPS_GOT_OFST: | |
df58fc94 RS |
11542 | case R_MICROMIPS_GOT16: |
11543 | case R_MICROMIPS_CALL16: | |
11544 | case R_MICROMIPS_CALL_HI16: | |
11545 | case R_MICROMIPS_CALL_LO16: | |
11546 | case R_MICROMIPS_GOT_HI16: | |
11547 | case R_MICROMIPS_GOT_LO16: | |
11548 | case R_MICROMIPS_GOT_DISP: | |
11549 | case R_MICROMIPS_GOT_PAGE: | |
11550 | case R_MICROMIPS_GOT_OFST: | |
b49e97c9 TS |
11551 | /* ??? It would seem that the existing MIPS code does no sort |
11552 | of reference counting or whatnot on its GOT and PLT entries, | |
11553 | so it is not possible to garbage collect them at this time. */ | |
11554 | break; | |
11555 | ||
11556 | default: | |
11557 | break; | |
11558 | } | |
11559 | #endif | |
11560 | ||
b34976b6 | 11561 | return TRUE; |
b49e97c9 TS |
11562 | } |
11563 | \f | |
11564 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
11565 | hiding the old indirect symbol. Process additional relocation | |
11566 | information. Also called for weakdefs, in which case we just let | |
11567 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
11568 | ||
11569 | void | |
fcfa13d2 | 11570 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
11571 | struct elf_link_hash_entry *dir, |
11572 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
11573 | { |
11574 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
11575 | ||
fcfa13d2 | 11576 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 11577 | |
861fb55a DJ |
11578 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
11579 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
11580 | /* Any absolute non-dynamic relocations against an indirect or weak | |
11581 | definition will be against the target symbol. */ | |
11582 | if (indmips->has_static_relocs) | |
11583 | dirmips->has_static_relocs = TRUE; | |
11584 | ||
b49e97c9 TS |
11585 | if (ind->root.type != bfd_link_hash_indirect) |
11586 | return; | |
11587 | ||
b49e97c9 TS |
11588 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
11589 | if (indmips->readonly_reloc) | |
b34976b6 | 11590 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 11591 | if (indmips->no_fn_stub) |
b34976b6 | 11592 | dirmips->no_fn_stub = TRUE; |
61b0a4af RS |
11593 | if (indmips->fn_stub) |
11594 | { | |
11595 | dirmips->fn_stub = indmips->fn_stub; | |
11596 | indmips->fn_stub = NULL; | |
11597 | } | |
11598 | if (indmips->need_fn_stub) | |
11599 | { | |
11600 | dirmips->need_fn_stub = TRUE; | |
11601 | indmips->need_fn_stub = FALSE; | |
11602 | } | |
11603 | if (indmips->call_stub) | |
11604 | { | |
11605 | dirmips->call_stub = indmips->call_stub; | |
11606 | indmips->call_stub = NULL; | |
11607 | } | |
11608 | if (indmips->call_fp_stub) | |
11609 | { | |
11610 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
11611 | indmips->call_fp_stub = NULL; | |
11612 | } | |
634835ae RS |
11613 | if (indmips->global_got_area < dirmips->global_got_area) |
11614 | dirmips->global_got_area = indmips->global_got_area; | |
11615 | if (indmips->global_got_area < GGA_NONE) | |
11616 | indmips->global_got_area = GGA_NONE; | |
861fb55a DJ |
11617 | if (indmips->has_nonpic_branches) |
11618 | dirmips->has_nonpic_branches = TRUE; | |
0f20cc35 DJ |
11619 | |
11620 | if (dirmips->tls_type == 0) | |
11621 | dirmips->tls_type = indmips->tls_type; | |
b49e97c9 | 11622 | } |
b49e97c9 | 11623 | \f |
d01414a5 TS |
11624 | #define PDR_SIZE 32 |
11625 | ||
b34976b6 | 11626 | bfd_boolean |
9719ad41 RS |
11627 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
11628 | struct bfd_link_info *info) | |
d01414a5 TS |
11629 | { |
11630 | asection *o; | |
b34976b6 | 11631 | bfd_boolean ret = FALSE; |
d01414a5 TS |
11632 | unsigned char *tdata; |
11633 | size_t i, skip; | |
11634 | ||
11635 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
11636 | if (! o) | |
b34976b6 | 11637 | return FALSE; |
eea6121a | 11638 | if (o->size == 0) |
b34976b6 | 11639 | return FALSE; |
eea6121a | 11640 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 11641 | return FALSE; |
d01414a5 TS |
11642 | if (o->output_section != NULL |
11643 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 11644 | return FALSE; |
d01414a5 | 11645 | |
eea6121a | 11646 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 11647 | if (! tdata) |
b34976b6 | 11648 | return FALSE; |
d01414a5 | 11649 | |
9719ad41 | 11650 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 11651 | info->keep_memory); |
d01414a5 TS |
11652 | if (!cookie->rels) |
11653 | { | |
11654 | free (tdata); | |
b34976b6 | 11655 | return FALSE; |
d01414a5 TS |
11656 | } |
11657 | ||
11658 | cookie->rel = cookie->rels; | |
11659 | cookie->relend = cookie->rels + o->reloc_count; | |
11660 | ||
eea6121a | 11661 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 11662 | { |
c152c796 | 11663 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
11664 | { |
11665 | tdata[i] = 1; | |
11666 | skip ++; | |
11667 | } | |
11668 | } | |
11669 | ||
11670 | if (skip != 0) | |
11671 | { | |
f0abc2a1 | 11672 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 11673 | o->size -= skip * PDR_SIZE; |
b34976b6 | 11674 | ret = TRUE; |
d01414a5 TS |
11675 | } |
11676 | else | |
11677 | free (tdata); | |
11678 | ||
11679 | if (! info->keep_memory) | |
11680 | free (cookie->rels); | |
11681 | ||
11682 | return ret; | |
11683 | } | |
11684 | ||
b34976b6 | 11685 | bfd_boolean |
9719ad41 | 11686 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
11687 | { |
11688 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
11689 | return TRUE; |
11690 | return FALSE; | |
53bfd6b4 | 11691 | } |
d01414a5 | 11692 | |
b34976b6 | 11693 | bfd_boolean |
c7b8f16e JB |
11694 | _bfd_mips_elf_write_section (bfd *output_bfd, |
11695 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
11696 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
11697 | { |
11698 | bfd_byte *to, *from, *end; | |
11699 | int i; | |
11700 | ||
11701 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 11702 | return FALSE; |
d01414a5 | 11703 | |
f0abc2a1 | 11704 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 11705 | return FALSE; |
d01414a5 TS |
11706 | |
11707 | to = contents; | |
eea6121a | 11708 | end = contents + sec->size; |
d01414a5 TS |
11709 | for (from = contents, i = 0; |
11710 | from < end; | |
11711 | from += PDR_SIZE, i++) | |
11712 | { | |
f0abc2a1 | 11713 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
11714 | continue; |
11715 | if (to != from) | |
11716 | memcpy (to, from, PDR_SIZE); | |
11717 | to += PDR_SIZE; | |
11718 | } | |
11719 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 11720 | sec->output_offset, sec->size); |
b34976b6 | 11721 | return TRUE; |
d01414a5 | 11722 | } |
53bfd6b4 | 11723 | \f |
df58fc94 RS |
11724 | /* microMIPS code retains local labels for linker relaxation. Omit them |
11725 | from output by default for clarity. */ | |
11726 | ||
11727 | bfd_boolean | |
11728 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) | |
11729 | { | |
11730 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
11731 | } | |
11732 | ||
b49e97c9 TS |
11733 | /* MIPS ELF uses a special find_nearest_line routine in order the |
11734 | handle the ECOFF debugging information. */ | |
11735 | ||
11736 | struct mips_elf_find_line | |
11737 | { | |
11738 | struct ecoff_debug_info d; | |
11739 | struct ecoff_find_line i; | |
11740 | }; | |
11741 | ||
b34976b6 | 11742 | bfd_boolean |
9719ad41 RS |
11743 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
11744 | asymbol **symbols, bfd_vma offset, | |
11745 | const char **filename_ptr, | |
11746 | const char **functionname_ptr, | |
11747 | unsigned int *line_ptr) | |
b49e97c9 TS |
11748 | { |
11749 | asection *msec; | |
11750 | ||
11751 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
11752 | filename_ptr, functionname_ptr, | |
11753 | line_ptr)) | |
b34976b6 | 11754 | return TRUE; |
b49e97c9 | 11755 | |
fc28f9aa TG |
11756 | if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, |
11757 | section, symbols, offset, | |
b49e97c9 | 11758 | filename_ptr, functionname_ptr, |
9b8d1a36 | 11759 | line_ptr, NULL, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 11760 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 11761 | return TRUE; |
b49e97c9 TS |
11762 | |
11763 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
11764 | if (msec != NULL) | |
11765 | { | |
11766 | flagword origflags; | |
11767 | struct mips_elf_find_line *fi; | |
11768 | const struct ecoff_debug_swap * const swap = | |
11769 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
11770 | ||
11771 | /* If we are called during a link, mips_elf_final_link may have | |
11772 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
11773 | if appropriate (which it normally will be). */ | |
11774 | origflags = msec->flags; | |
11775 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
11776 | msec->flags |= SEC_HAS_CONTENTS; | |
11777 | ||
11778 | fi = elf_tdata (abfd)->find_line_info; | |
11779 | if (fi == NULL) | |
11780 | { | |
11781 | bfd_size_type external_fdr_size; | |
11782 | char *fraw_src; | |
11783 | char *fraw_end; | |
11784 | struct fdr *fdr_ptr; | |
11785 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
11786 | ||
9719ad41 | 11787 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
11788 | if (fi == NULL) |
11789 | { | |
11790 | msec->flags = origflags; | |
b34976b6 | 11791 | return FALSE; |
b49e97c9 TS |
11792 | } |
11793 | ||
11794 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
11795 | { | |
11796 | msec->flags = origflags; | |
b34976b6 | 11797 | return FALSE; |
b49e97c9 TS |
11798 | } |
11799 | ||
11800 | /* Swap in the FDR information. */ | |
11801 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 11802 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11803 | if (fi->d.fdr == NULL) |
11804 | { | |
11805 | msec->flags = origflags; | |
b34976b6 | 11806 | return FALSE; |
b49e97c9 TS |
11807 | } |
11808 | external_fdr_size = swap->external_fdr_size; | |
11809 | fdr_ptr = fi->d.fdr; | |
11810 | fraw_src = (char *) fi->d.external_fdr; | |
11811 | fraw_end = (fraw_src | |
11812 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
11813 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 11814 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 TS |
11815 | |
11816 | elf_tdata (abfd)->find_line_info = fi; | |
11817 | ||
11818 | /* Note that we don't bother to ever free this information. | |
11819 | find_nearest_line is either called all the time, as in | |
11820 | objdump -l, so the information should be saved, or it is | |
11821 | rarely called, as in ld error messages, so the memory | |
11822 | wasted is unimportant. Still, it would probably be a | |
11823 | good idea for free_cached_info to throw it away. */ | |
11824 | } | |
11825 | ||
11826 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
11827 | &fi->i, filename_ptr, functionname_ptr, | |
11828 | line_ptr)) | |
11829 | { | |
11830 | msec->flags = origflags; | |
b34976b6 | 11831 | return TRUE; |
b49e97c9 TS |
11832 | } |
11833 | ||
11834 | msec->flags = origflags; | |
11835 | } | |
11836 | ||
11837 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
11838 | ||
11839 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
11840 | filename_ptr, functionname_ptr, | |
11841 | line_ptr); | |
11842 | } | |
4ab527b0 FF |
11843 | |
11844 | bfd_boolean | |
11845 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
11846 | const char **filename_ptr, | |
11847 | const char **functionname_ptr, | |
11848 | unsigned int *line_ptr) | |
11849 | { | |
11850 | bfd_boolean found; | |
11851 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11852 | functionname_ptr, line_ptr, | |
11853 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11854 | return found; | |
11855 | } | |
11856 | ||
b49e97c9 TS |
11857 | \f |
11858 | /* When are writing out the .options or .MIPS.options section, | |
11859 | remember the bytes we are writing out, so that we can install the | |
11860 | GP value in the section_processing routine. */ | |
11861 | ||
b34976b6 | 11862 | bfd_boolean |
9719ad41 RS |
11863 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
11864 | const void *location, | |
11865 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 11866 | { |
cc2e31b9 | 11867 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
11868 | { |
11869 | bfd_byte *c; | |
11870 | ||
11871 | if (elf_section_data (section) == NULL) | |
11872 | { | |
11873 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 11874 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 11875 | if (elf_section_data (section) == NULL) |
b34976b6 | 11876 | return FALSE; |
b49e97c9 | 11877 | } |
f0abc2a1 | 11878 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
11879 | if (c == NULL) |
11880 | { | |
eea6121a | 11881 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 11882 | if (c == NULL) |
b34976b6 | 11883 | return FALSE; |
f0abc2a1 | 11884 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
11885 | } |
11886 | ||
9719ad41 | 11887 | memcpy (c + offset, location, count); |
b49e97c9 TS |
11888 | } |
11889 | ||
11890 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
11891 | count); | |
11892 | } | |
11893 | ||
11894 | /* This is almost identical to bfd_generic_get_... except that some | |
11895 | MIPS relocations need to be handled specially. Sigh. */ | |
11896 | ||
11897 | bfd_byte * | |
9719ad41 RS |
11898 | _bfd_elf_mips_get_relocated_section_contents |
11899 | (bfd *abfd, | |
11900 | struct bfd_link_info *link_info, | |
11901 | struct bfd_link_order *link_order, | |
11902 | bfd_byte *data, | |
11903 | bfd_boolean relocatable, | |
11904 | asymbol **symbols) | |
b49e97c9 TS |
11905 | { |
11906 | /* Get enough memory to hold the stuff */ | |
11907 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
11908 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 11909 | bfd_size_type sz; |
b49e97c9 TS |
11910 | |
11911 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
11912 | arelent **reloc_vector = NULL; | |
11913 | long reloc_count; | |
11914 | ||
11915 | if (reloc_size < 0) | |
11916 | goto error_return; | |
11917 | ||
9719ad41 | 11918 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
11919 | if (reloc_vector == NULL && reloc_size != 0) |
11920 | goto error_return; | |
11921 | ||
11922 | /* read in the section */ | |
eea6121a AM |
11923 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
11924 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
11925 | goto error_return; |
11926 | ||
b49e97c9 TS |
11927 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
11928 | input_section, | |
11929 | reloc_vector, | |
11930 | symbols); | |
11931 | if (reloc_count < 0) | |
11932 | goto error_return; | |
11933 | ||
11934 | if (reloc_count > 0) | |
11935 | { | |
11936 | arelent **parent; | |
11937 | /* for mips */ | |
11938 | int gp_found; | |
11939 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
11940 | ||
11941 | { | |
11942 | struct bfd_hash_entry *h; | |
11943 | struct bfd_link_hash_entry *lh; | |
11944 | /* Skip all this stuff if we aren't mixing formats. */ | |
11945 | if (abfd && input_bfd | |
11946 | && abfd->xvec == input_bfd->xvec) | |
11947 | lh = 0; | |
11948 | else | |
11949 | { | |
b34976b6 | 11950 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
11951 | lh = (struct bfd_link_hash_entry *) h; |
11952 | } | |
11953 | lookup: | |
11954 | if (lh) | |
11955 | { | |
11956 | switch (lh->type) | |
11957 | { | |
11958 | case bfd_link_hash_undefined: | |
11959 | case bfd_link_hash_undefweak: | |
11960 | case bfd_link_hash_common: | |
11961 | gp_found = 0; | |
11962 | break; | |
11963 | case bfd_link_hash_defined: | |
11964 | case bfd_link_hash_defweak: | |
11965 | gp_found = 1; | |
11966 | gp = lh->u.def.value; | |
11967 | break; | |
11968 | case bfd_link_hash_indirect: | |
11969 | case bfd_link_hash_warning: | |
11970 | lh = lh->u.i.link; | |
11971 | /* @@FIXME ignoring warning for now */ | |
11972 | goto lookup; | |
11973 | case bfd_link_hash_new: | |
11974 | default: | |
11975 | abort (); | |
11976 | } | |
11977 | } | |
11978 | else | |
11979 | gp_found = 0; | |
11980 | } | |
11981 | /* end mips */ | |
9719ad41 | 11982 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 11983 | { |
9719ad41 | 11984 | char *error_message = NULL; |
b49e97c9 TS |
11985 | bfd_reloc_status_type r; |
11986 | ||
11987 | /* Specific to MIPS: Deal with relocation types that require | |
11988 | knowing the gp of the output bfd. */ | |
11989 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 11990 | |
8236346f EC |
11991 | /* If we've managed to find the gp and have a special |
11992 | function for the relocation then go ahead, else default | |
11993 | to the generic handling. */ | |
11994 | if (gp_found | |
11995 | && (*parent)->howto->special_function | |
11996 | == _bfd_mips_elf32_gprel16_reloc) | |
11997 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
11998 | input_section, relocatable, | |
11999 | data, gp); | |
12000 | else | |
86324f90 | 12001 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
12002 | input_section, |
12003 | relocatable ? abfd : NULL, | |
12004 | &error_message); | |
b49e97c9 | 12005 | |
1049f94e | 12006 | if (relocatable) |
b49e97c9 TS |
12007 | { |
12008 | asection *os = input_section->output_section; | |
12009 | ||
12010 | /* A partial link, so keep the relocs */ | |
12011 | os->orelocation[os->reloc_count] = *parent; | |
12012 | os->reloc_count++; | |
12013 | } | |
12014 | ||
12015 | if (r != bfd_reloc_ok) | |
12016 | { | |
12017 | switch (r) | |
12018 | { | |
12019 | case bfd_reloc_undefined: | |
12020 | if (!((*link_info->callbacks->undefined_symbol) | |
12021 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 12022 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
12023 | goto error_return; |
12024 | break; | |
12025 | case bfd_reloc_dangerous: | |
9719ad41 | 12026 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
12027 | if (!((*link_info->callbacks->reloc_dangerous) |
12028 | (link_info, error_message, input_bfd, input_section, | |
12029 | (*parent)->address))) | |
12030 | goto error_return; | |
12031 | break; | |
12032 | case bfd_reloc_overflow: | |
12033 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
12034 | (link_info, NULL, |
12035 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
12036 | (*parent)->howto->name, (*parent)->addend, |
12037 | input_bfd, input_section, (*parent)->address))) | |
12038 | goto error_return; | |
12039 | break; | |
12040 | case bfd_reloc_outofrange: | |
12041 | default: | |
12042 | abort (); | |
12043 | break; | |
12044 | } | |
12045 | ||
12046 | } | |
12047 | } | |
12048 | } | |
12049 | if (reloc_vector != NULL) | |
12050 | free (reloc_vector); | |
12051 | return data; | |
12052 | ||
12053 | error_return: | |
12054 | if (reloc_vector != NULL) | |
12055 | free (reloc_vector); | |
12056 | return NULL; | |
12057 | } | |
12058 | \f | |
df58fc94 RS |
12059 | static bfd_boolean |
12060 | mips_elf_relax_delete_bytes (bfd *abfd, | |
12061 | asection *sec, bfd_vma addr, int count) | |
12062 | { | |
12063 | Elf_Internal_Shdr *symtab_hdr; | |
12064 | unsigned int sec_shndx; | |
12065 | bfd_byte *contents; | |
12066 | Elf_Internal_Rela *irel, *irelend; | |
12067 | Elf_Internal_Sym *isym; | |
12068 | Elf_Internal_Sym *isymend; | |
12069 | struct elf_link_hash_entry **sym_hashes; | |
12070 | struct elf_link_hash_entry **end_hashes; | |
12071 | struct elf_link_hash_entry **start_hashes; | |
12072 | unsigned int symcount; | |
12073 | ||
12074 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
12075 | contents = elf_section_data (sec)->this_hdr.contents; | |
12076 | ||
12077 | irel = elf_section_data (sec)->relocs; | |
12078 | irelend = irel + sec->reloc_count; | |
12079 | ||
12080 | /* Actually delete the bytes. */ | |
12081 | memmove (contents + addr, contents + addr + count, | |
12082 | (size_t) (sec->size - addr - count)); | |
12083 | sec->size -= count; | |
12084 | ||
12085 | /* Adjust all the relocs. */ | |
12086 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
12087 | { | |
12088 | /* Get the new reloc address. */ | |
12089 | if (irel->r_offset > addr) | |
12090 | irel->r_offset -= count; | |
12091 | } | |
12092 | ||
12093 | BFD_ASSERT (addr % 2 == 0); | |
12094 | BFD_ASSERT (count % 2 == 0); | |
12095 | ||
12096 | /* Adjust the local symbols defined in this section. */ | |
12097 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12098 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12099 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 12100 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
12101 | isym->st_value -= count; |
12102 | ||
12103 | /* Now adjust the global symbols defined in this section. */ | |
12104 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
12105 | - symtab_hdr->sh_info); | |
12106 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
12107 | end_hashes = sym_hashes + symcount; | |
12108 | ||
12109 | for (; sym_hashes < end_hashes; sym_hashes++) | |
12110 | { | |
12111 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
12112 | ||
12113 | if ((sym_hash->root.type == bfd_link_hash_defined | |
12114 | || sym_hash->root.type == bfd_link_hash_defweak) | |
12115 | && sym_hash->root.u.def.section == sec) | |
12116 | { | |
2309ddf2 | 12117 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 12118 | |
df58fc94 RS |
12119 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
12120 | value &= MINUS_TWO; | |
12121 | if (value > addr) | |
12122 | sym_hash->root.u.def.value -= count; | |
12123 | } | |
12124 | } | |
12125 | ||
12126 | return TRUE; | |
12127 | } | |
12128 | ||
12129 | ||
12130 | /* Opcodes needed for microMIPS relaxation as found in | |
12131 | opcodes/micromips-opc.c. */ | |
12132 | ||
12133 | struct opcode_descriptor { | |
12134 | unsigned long match; | |
12135 | unsigned long mask; | |
12136 | }; | |
12137 | ||
12138 | /* The $ra register aka $31. */ | |
12139 | ||
12140 | #define RA 31 | |
12141 | ||
12142 | /* 32-bit instruction format register fields. */ | |
12143 | ||
12144 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
12145 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
12146 | ||
12147 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
12148 | ||
12149 | #define OP16_VALID_REG(r) \ | |
12150 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
12151 | ||
12152 | ||
12153 | /* 32-bit and 16-bit branches. */ | |
12154 | ||
12155 | static const struct opcode_descriptor b_insns_32[] = { | |
12156 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
12157 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
12158 | { 0, 0 } /* End marker for find_match(). */ | |
12159 | }; | |
12160 | ||
12161 | static const struct opcode_descriptor bc_insn_32 = | |
12162 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
12163 | ||
12164 | static const struct opcode_descriptor bz_insn_32 = | |
12165 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
12166 | ||
12167 | static const struct opcode_descriptor bzal_insn_32 = | |
12168 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
12169 | ||
12170 | static const struct opcode_descriptor beq_insn_32 = | |
12171 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
12172 | ||
12173 | static const struct opcode_descriptor b_insn_16 = | |
12174 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
12175 | ||
12176 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 12177 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
12178 | |
12179 | ||
12180 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
12181 | ||
12182 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
12183 | eq and second the ne. This convention is used when replacing a | |
12184 | 32-bit BEQ/BNE with the 16-bit version. */ | |
12185 | ||
12186 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
12187 | ||
12188 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
12189 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
12190 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
12191 | { 0, 0 } /* End marker for find_match(). */ | |
12192 | }; | |
12193 | ||
12194 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
12195 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
12196 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
12197 | { 0, 0 } /* End marker for find_match(). */ | |
12198 | }; | |
12199 | ||
12200 | static const struct opcode_descriptor bzc_insns_32[] = { | |
12201 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
12202 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
12203 | { 0, 0 } /* End marker for find_match(). */ | |
12204 | }; | |
12205 | ||
12206 | static const struct opcode_descriptor bz_insns_16[] = { | |
12207 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
12208 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
12209 | { 0, 0 } /* End marker for find_match(). */ | |
12210 | }; | |
12211 | ||
12212 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
12213 | ||
12214 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0x17) + 2) | |
12215 | #define BZ16_REG_FIELD(r) \ | |
12216 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 7) | |
12217 | ||
12218 | ||
12219 | /* 32-bit instructions with a delay slot. */ | |
12220 | ||
12221 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
12222 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
12223 | ||
12224 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
12225 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
12226 | ||
12227 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
12228 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
12229 | ||
12230 | static const struct opcode_descriptor j_insn_32 = | |
12231 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
12232 | ||
12233 | static const struct opcode_descriptor jalr_insn_32 = | |
12234 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
12235 | ||
12236 | /* This table can be compacted, because no opcode replacement is made. */ | |
12237 | ||
12238 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
12239 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
12240 | ||
12241 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
12242 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
12243 | ||
12244 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
12245 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
12246 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
12247 | { 0, 0 } /* End marker for find_match(). */ | |
12248 | }; | |
12249 | ||
12250 | /* This table can be compacted, because no opcode replacement is made. */ | |
12251 | ||
12252 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
12253 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
12254 | ||
12255 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
12256 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
12257 | { 0, 0 } /* End marker for find_match(). */ | |
12258 | }; | |
12259 | ||
12260 | ||
12261 | /* 16-bit instructions with a delay slot. */ | |
12262 | ||
12263 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
12264 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
12265 | ||
12266 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
12267 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
12268 | ||
12269 | static const struct opcode_descriptor jr_insn_16 = | |
12270 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
12271 | ||
12272 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
12273 | ||
12274 | /* This table can be compacted, because no opcode replacement is made. */ | |
12275 | ||
12276 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
12277 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
12278 | ||
12279 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
12280 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
12281 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
12282 | { 0, 0 } /* End marker for find_match(). */ | |
12283 | }; | |
12284 | ||
12285 | ||
12286 | /* LUI instruction. */ | |
12287 | ||
12288 | static const struct opcode_descriptor lui_insn = | |
12289 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
12290 | ||
12291 | ||
12292 | /* ADDIU instruction. */ | |
12293 | ||
12294 | static const struct opcode_descriptor addiu_insn = | |
12295 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
12296 | ||
12297 | static const struct opcode_descriptor addiupc_insn = | |
12298 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
12299 | ||
12300 | #define ADDIUPC_REG_FIELD(r) \ | |
12301 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
12302 | ||
12303 | ||
12304 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
12305 | ||
12306 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
12307 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
12308 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
12309 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
12310 | ||
12311 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
12312 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
12313 | ||
12314 | static const struct opcode_descriptor move_insns_32[] = { | |
12315 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ | |
12316 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ | |
12317 | { 0, 0 } /* End marker for find_match(). */ | |
12318 | }; | |
12319 | ||
12320 | static const struct opcode_descriptor move_insn_16 = | |
12321 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
12322 | ||
12323 | ||
12324 | /* NOP instructions. */ | |
12325 | ||
12326 | static const struct opcode_descriptor nop_insn_32 = | |
12327 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
12328 | ||
12329 | static const struct opcode_descriptor nop_insn_16 = | |
12330 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
12331 | ||
12332 | ||
12333 | /* Instruction match support. */ | |
12334 | ||
12335 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
12336 | ||
12337 | static int | |
12338 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
12339 | { | |
12340 | unsigned long indx; | |
12341 | ||
12342 | for (indx = 0; insn[indx].mask != 0; indx++) | |
12343 | if (MATCH (opcode, insn[indx])) | |
12344 | return indx; | |
12345 | ||
12346 | return -1; | |
12347 | } | |
12348 | ||
12349 | ||
12350 | /* Branch and delay slot decoding support. */ | |
12351 | ||
12352 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
12353 | return the minimum length of its delay slot, otherwise return 0. | |
12354 | Non-zero results are not definitive as we might be checking against | |
12355 | the second half of another instruction. */ | |
12356 | ||
12357 | static int | |
12358 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
12359 | { | |
12360 | unsigned long opcode; | |
12361 | int bdsize; | |
12362 | ||
12363 | opcode = bfd_get_16 (abfd, ptr); | |
12364 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
12365 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
12366 | bdsize = 4; | |
12367 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
12368 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
12369 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
12370 | bdsize = 2; | |
12371 | else | |
12372 | /* No delay slot. */ | |
12373 | bdsize = 0; | |
12374 | ||
12375 | return bdsize; | |
12376 | } | |
12377 | ||
12378 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
12379 | return the minimum length of its delay slot, otherwise return 0. | |
12380 | Non-zero results are not definitive as we might be checking against | |
12381 | the second half of another instruction. */ | |
12382 | ||
12383 | static int | |
12384 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
12385 | { | |
12386 | unsigned long opcode; | |
12387 | int bdsize; | |
12388 | ||
d21911ea | 12389 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12390 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
12391 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
12392 | bdsize = 4; | |
12393 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
12394 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
12395 | bdsize = 2; | |
12396 | else | |
12397 | /* No delay slot. */ | |
12398 | bdsize = 0; | |
12399 | ||
12400 | return bdsize; | |
12401 | } | |
12402 | ||
12403 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
12404 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
12405 | ||
12406 | static bfd_boolean | |
12407 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) | |
12408 | { | |
12409 | unsigned long opcode; | |
12410 | ||
12411 | opcode = bfd_get_16 (abfd, ptr); | |
12412 | if (MATCH (opcode, b_insn_16) | |
12413 | /* B16 */ | |
12414 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
12415 | /* JR16 */ | |
12416 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
12417 | /* BEQZ16, BNEZ16 */ | |
12418 | || (MATCH (opcode, jalr_insn_16_bd32) | |
12419 | /* JALR16 */ | |
12420 | && reg != JR16_REG (opcode) && reg != RA)) | |
12421 | return TRUE; | |
12422 | ||
12423 | return FALSE; | |
12424 | } | |
12425 | ||
12426 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
12427 | then return TRUE, otherwise FALSE. */ | |
12428 | ||
f41e5fcc | 12429 | static bfd_boolean |
df58fc94 RS |
12430 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
12431 | { | |
12432 | unsigned long opcode; | |
12433 | ||
d21911ea | 12434 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12435 | if (MATCH (opcode, j_insn_32) |
12436 | /* J */ | |
12437 | || MATCH (opcode, bc_insn_32) | |
12438 | /* BC1F, BC1T, BC2F, BC2T */ | |
12439 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
12440 | /* JAL, JALX */ | |
12441 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
12442 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
12443 | || (MATCH (opcode, bzal_insn_32) | |
12444 | /* BGEZAL, BLTZAL */ | |
12445 | && reg != OP32_SREG (opcode) && reg != RA) | |
12446 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
12447 | /* JALR, JALR.HB, BEQ, BNE */ | |
12448 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
12449 | return TRUE; | |
12450 | ||
12451 | return FALSE; | |
12452 | } | |
12453 | ||
80cab405 MR |
12454 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
12455 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
12456 | then return TRUE, otherwise FALSE. */ | |
df58fc94 RS |
12457 | |
12458 | static bfd_boolean | |
80cab405 MR |
12459 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
12460 | const Elf_Internal_Rela *internal_relocs, | |
12461 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 12462 | { |
80cab405 MR |
12463 | const Elf_Internal_Rela *irel; |
12464 | unsigned long opcode; | |
12465 | ||
d21911ea | 12466 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 MR |
12467 | if (find_match (opcode, bzc_insns_32) < 0) |
12468 | return FALSE; | |
df58fc94 RS |
12469 | |
12470 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
12471 | if (irel->r_offset == offset |
12472 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
12473 | return TRUE; | |
12474 | ||
df58fc94 RS |
12475 | return FALSE; |
12476 | } | |
80cab405 MR |
12477 | |
12478 | /* Bitsize checking. */ | |
12479 | #define IS_BITSIZE(val, N) \ | |
12480 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
12481 | - (1ULL << ((N) - 1))) == (val)) | |
12482 | ||
df58fc94 RS |
12483 | \f |
12484 | bfd_boolean | |
12485 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, | |
12486 | struct bfd_link_info *link_info, | |
12487 | bfd_boolean *again) | |
12488 | { | |
12489 | Elf_Internal_Shdr *symtab_hdr; | |
12490 | Elf_Internal_Rela *internal_relocs; | |
12491 | Elf_Internal_Rela *irel, *irelend; | |
12492 | bfd_byte *contents = NULL; | |
12493 | Elf_Internal_Sym *isymbuf = NULL; | |
12494 | ||
12495 | /* Assume nothing changes. */ | |
12496 | *again = FALSE; | |
12497 | ||
12498 | /* We don't have to do anything for a relocatable link, if | |
12499 | this section does not have relocs, or if this is not a | |
12500 | code section. */ | |
12501 | ||
12502 | if (link_info->relocatable | |
12503 | || (sec->flags & SEC_RELOC) == 0 | |
12504 | || sec->reloc_count == 0 | |
12505 | || (sec->flags & SEC_CODE) == 0) | |
12506 | return TRUE; | |
12507 | ||
12508 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12509 | ||
12510 | /* Get a copy of the native relocations. */ | |
12511 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 12512 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
12513 | link_info->keep_memory)); |
12514 | if (internal_relocs == NULL) | |
12515 | goto error_return; | |
12516 | ||
12517 | /* Walk through them looking for relaxing opportunities. */ | |
12518 | irelend = internal_relocs + sec->reloc_count; | |
12519 | for (irel = internal_relocs; irel < irelend; irel++) | |
12520 | { | |
12521 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
12522 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
12523 | bfd_boolean target_is_micromips_code_p; | |
12524 | unsigned long opcode; | |
12525 | bfd_vma symval; | |
12526 | bfd_vma pcrval; | |
2309ddf2 | 12527 | bfd_byte *ptr; |
df58fc94 RS |
12528 | int fndopc; |
12529 | ||
12530 | /* The number of bytes to delete for relaxation and from where | |
12531 | to delete these bytes starting at irel->r_offset. */ | |
12532 | int delcnt = 0; | |
12533 | int deloff = 0; | |
12534 | ||
12535 | /* If this isn't something that can be relaxed, then ignore | |
12536 | this reloc. */ | |
12537 | if (r_type != R_MICROMIPS_HI16 | |
12538 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 12539 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
12540 | continue; |
12541 | ||
12542 | /* Get the section contents if we haven't done so already. */ | |
12543 | if (contents == NULL) | |
12544 | { | |
12545 | /* Get cached copy if it exists. */ | |
12546 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
12547 | contents = elf_section_data (sec)->this_hdr.contents; | |
12548 | /* Go get them off disk. */ | |
12549 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
12550 | goto error_return; | |
12551 | } | |
2309ddf2 | 12552 | ptr = contents + irel->r_offset; |
df58fc94 RS |
12553 | |
12554 | /* Read this BFD's local symbols if we haven't done so already. */ | |
12555 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
12556 | { | |
12557 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
12558 | if (isymbuf == NULL) | |
12559 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
12560 | symtab_hdr->sh_info, 0, | |
12561 | NULL, NULL, NULL); | |
12562 | if (isymbuf == NULL) | |
12563 | goto error_return; | |
12564 | } | |
12565 | ||
12566 | /* Get the value of the symbol referred to by the reloc. */ | |
12567 | if (r_symndx < symtab_hdr->sh_info) | |
12568 | { | |
12569 | /* A local symbol. */ | |
12570 | Elf_Internal_Sym *isym; | |
12571 | asection *sym_sec; | |
12572 | ||
12573 | isym = isymbuf + r_symndx; | |
12574 | if (isym->st_shndx == SHN_UNDEF) | |
12575 | sym_sec = bfd_und_section_ptr; | |
12576 | else if (isym->st_shndx == SHN_ABS) | |
12577 | sym_sec = bfd_abs_section_ptr; | |
12578 | else if (isym->st_shndx == SHN_COMMON) | |
12579 | sym_sec = bfd_com_section_ptr; | |
12580 | else | |
12581 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
12582 | symval = (isym->st_value | |
12583 | + sym_sec->output_section->vma | |
12584 | + sym_sec->output_offset); | |
12585 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
12586 | } | |
12587 | else | |
12588 | { | |
12589 | unsigned long indx; | |
12590 | struct elf_link_hash_entry *h; | |
12591 | ||
12592 | /* An external symbol. */ | |
12593 | indx = r_symndx - symtab_hdr->sh_info; | |
12594 | h = elf_sym_hashes (abfd)[indx]; | |
12595 | BFD_ASSERT (h != NULL); | |
12596 | ||
12597 | if (h->root.type != bfd_link_hash_defined | |
12598 | && h->root.type != bfd_link_hash_defweak) | |
12599 | /* This appears to be a reference to an undefined | |
12600 | symbol. Just ignore it -- it will be caught by the | |
12601 | regular reloc processing. */ | |
12602 | continue; | |
12603 | ||
12604 | symval = (h->root.u.def.value | |
12605 | + h->root.u.def.section->output_section->vma | |
12606 | + h->root.u.def.section->output_offset); | |
12607 | target_is_micromips_code_p = (!h->needs_plt | |
12608 | && ELF_ST_IS_MICROMIPS (h->other)); | |
12609 | } | |
12610 | ||
12611 | ||
12612 | /* For simplicity of coding, we are going to modify the | |
12613 | section contents, the section relocs, and the BFD symbol | |
12614 | table. We must tell the rest of the code not to free up this | |
12615 | information. It would be possible to instead create a table | |
12616 | of changes which have to be made, as is done in coff-mips.c; | |
12617 | that would be more work, but would require less memory when | |
12618 | the linker is run. */ | |
12619 | ||
12620 | /* Only 32-bit instructions relaxed. */ | |
12621 | if (irel->r_offset + 4 > sec->size) | |
12622 | continue; | |
12623 | ||
d21911ea | 12624 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
12625 | |
12626 | /* This is the pc-relative distance from the instruction the | |
12627 | relocation is applied to, to the symbol referred. */ | |
12628 | pcrval = (symval | |
12629 | - (sec->output_section->vma + sec->output_offset) | |
12630 | - irel->r_offset); | |
12631 | ||
12632 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
12633 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or | |
12634 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
12635 | ||
12636 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) | |
12637 | ||
12638 | where pcrval has first to be adjusted to apply against the LO16 | |
12639 | location (we make the adjustment later on, when we have figured | |
12640 | out the offset). */ | |
12641 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) | |
12642 | { | |
80cab405 | 12643 | bfd_boolean bzc = FALSE; |
df58fc94 RS |
12644 | unsigned long nextopc; |
12645 | unsigned long reg; | |
12646 | bfd_vma offset; | |
12647 | ||
12648 | /* Give up if the previous reloc was a HI16 against this symbol | |
12649 | too. */ | |
12650 | if (irel > internal_relocs | |
12651 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
12652 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
12653 | continue; | |
12654 | ||
12655 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
12656 | if (irel + 1 >= irelend | |
12657 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
12658 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
12659 | continue; | |
12660 | ||
12661 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
12662 | if (irel + 2 >= irelend | |
12663 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
12664 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
12665 | continue; | |
12666 | ||
80cab405 MR |
12667 | /* See if the LUI instruction *might* be in a branch delay slot. |
12668 | We check whether what looks like a 16-bit branch or jump is | |
12669 | actually an immediate argument to a compact branch, and let | |
12670 | it through if so. */ | |
df58fc94 | 12671 | if (irel->r_offset >= 2 |
2309ddf2 | 12672 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 12673 | && !(irel->r_offset >= 4 |
80cab405 MR |
12674 | && (bzc = check_relocated_bzc (abfd, |
12675 | ptr - 4, irel->r_offset - 4, | |
12676 | internal_relocs, irelend)))) | |
df58fc94 RS |
12677 | continue; |
12678 | if (irel->r_offset >= 4 | |
80cab405 | 12679 | && !bzc |
2309ddf2 | 12680 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
12681 | continue; |
12682 | ||
12683 | reg = OP32_SREG (opcode); | |
12684 | ||
12685 | /* We only relax adjacent instructions or ones separated with | |
12686 | a branch or jump that has a delay slot. The branch or jump | |
12687 | must not fiddle with the register used to hold the address. | |
12688 | Subtract 4 for the LUI itself. */ | |
12689 | offset = irel[1].r_offset - irel[0].r_offset; | |
12690 | switch (offset - 4) | |
12691 | { | |
12692 | case 0: | |
12693 | break; | |
12694 | case 2: | |
2309ddf2 | 12695 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12696 | break; |
12697 | continue; | |
12698 | case 4: | |
2309ddf2 | 12699 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
12700 | break; |
12701 | continue; | |
12702 | default: | |
12703 | continue; | |
12704 | } | |
12705 | ||
d21911ea | 12706 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
12707 | |
12708 | /* Give up unless the same register is used with both | |
12709 | relocations. */ | |
12710 | if (OP32_SREG (nextopc) != reg) | |
12711 | continue; | |
12712 | ||
12713 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
12714 | and rounding up to take masking of the two LSBs into account. */ | |
12715 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
12716 | ||
12717 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
12718 | if (IS_BITSIZE (symval, 16)) | |
12719 | { | |
12720 | /* Fix the relocation's type. */ | |
12721 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
12722 | ||
12723 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
12724 | source register in bits 20:16. This register becomes $0 | |
12725 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
12726 | nextopc &= ~0x001f0000; | |
12727 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
12728 | contents + irel[1].r_offset); | |
12729 | } | |
12730 | ||
12731 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
12732 | We add 4 to take LUI deletion into account while checking | |
12733 | the PC-relative distance. */ | |
12734 | else if (symval % 4 == 0 | |
12735 | && IS_BITSIZE (pcrval + 4, 25) | |
12736 | && MATCH (nextopc, addiu_insn) | |
12737 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
12738 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
12739 | { | |
12740 | /* Fix the relocation's type. */ | |
12741 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
12742 | ||
12743 | /* Replace ADDIU with the ADDIUPC version. */ | |
12744 | nextopc = (addiupc_insn.match | |
12745 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
12746 | ||
d21911ea MR |
12747 | bfd_put_micromips_32 (abfd, nextopc, |
12748 | contents + irel[1].r_offset); | |
df58fc94 RS |
12749 | } |
12750 | ||
12751 | /* Can't do anything, give up, sigh... */ | |
12752 | else | |
12753 | continue; | |
12754 | ||
12755 | /* Fix the relocation's type. */ | |
12756 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
12757 | ||
12758 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
12759 | delcnt = 4; | |
12760 | deloff = 0; | |
12761 | } | |
12762 | ||
12763 | /* Compact branch relaxation -- due to the multitude of macros | |
12764 | employed by the compiler/assembler, compact branches are not | |
12765 | always generated. Obviously, this can/will be fixed elsewhere, | |
12766 | but there is no drawback in double checking it here. */ | |
12767 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12768 | && irel->r_offset + 5 < sec->size | |
12769 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12770 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
2309ddf2 | 12771 | && MATCH (bfd_get_16 (abfd, ptr + 4), nop_insn_16)) |
df58fc94 RS |
12772 | { |
12773 | unsigned long reg; | |
12774 | ||
12775 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12776 | ||
12777 | /* Replace BEQZ/BNEZ with the compact version. */ | |
12778 | opcode = (bzc_insns_32[fndopc].match | |
12779 | | BZC32_REG_FIELD (reg) | |
12780 | | (opcode & 0xffff)); /* Addend value. */ | |
12781 | ||
d21911ea | 12782 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 RS |
12783 | |
12784 | /* Delete the 16-bit delay slot NOP: two bytes from | |
12785 | irel->offset + 4. */ | |
12786 | delcnt = 2; | |
12787 | deloff = 4; | |
12788 | } | |
12789 | ||
12790 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
12791 | to check the distance from the next instruction, so subtract 2. */ | |
12792 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12793 | && IS_BITSIZE (pcrval - 2, 11) | |
12794 | && find_match (opcode, b_insns_32) >= 0) | |
12795 | { | |
12796 | /* Fix the relocation's type. */ | |
12797 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
12798 | ||
a8685210 | 12799 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12800 | bfd_put_16 (abfd, |
12801 | (b_insn_16.match | |
12802 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 12803 | ptr); |
df58fc94 RS |
12804 | |
12805 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12806 | delcnt = 2; | |
12807 | deloff = 2; | |
12808 | } | |
12809 | ||
12810 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
12811 | to check the distance from the next instruction, so subtract 2. */ | |
12812 | else if (r_type == R_MICROMIPS_PC16_S1 | |
12813 | && IS_BITSIZE (pcrval - 2, 8) | |
12814 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
12815 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
12816 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
12817 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
12818 | { | |
12819 | unsigned long reg; | |
12820 | ||
12821 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
12822 | ||
12823 | /* Fix the relocation's type. */ | |
12824 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
12825 | ||
a8685210 | 12826 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
12827 | bfd_put_16 (abfd, |
12828 | (bz_insns_16[fndopc].match | |
12829 | | BZ16_REG_FIELD (reg) | |
12830 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 12831 | ptr); |
df58fc94 RS |
12832 | |
12833 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
12834 | delcnt = 2; | |
12835 | deloff = 2; | |
12836 | } | |
12837 | ||
12838 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
12839 | else if (r_type == R_MICROMIPS_26_S1 | |
12840 | && target_is_micromips_code_p | |
12841 | && irel->r_offset + 7 < sec->size | |
12842 | && MATCH (opcode, jal_insn_32_bd32)) | |
12843 | { | |
12844 | unsigned long n32opc; | |
12845 | bfd_boolean relaxed = FALSE; | |
12846 | ||
d21911ea | 12847 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
12848 | |
12849 | if (MATCH (n32opc, nop_insn_32)) | |
12850 | { | |
12851 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 12852 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 RS |
12853 | |
12854 | relaxed = TRUE; | |
12855 | } | |
12856 | else if (find_match (n32opc, move_insns_32) >= 0) | |
12857 | { | |
12858 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
12859 | bfd_put_16 (abfd, | |
12860 | (move_insn_16.match | |
12861 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
12862 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 12863 | ptr + 4); |
df58fc94 RS |
12864 | |
12865 | relaxed = TRUE; | |
12866 | } | |
12867 | /* Other 32-bit instructions relaxable to 16-bit | |
12868 | instructions will be handled here later. */ | |
12869 | ||
12870 | if (relaxed) | |
12871 | { | |
12872 | /* JAL with 32-bit delay slot that is changed to a JALS | |
12873 | with 16-bit delay slot. */ | |
d21911ea | 12874 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
12875 | |
12876 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
12877 | delcnt = 2; | |
12878 | deloff = 6; | |
12879 | } | |
12880 | } | |
12881 | ||
12882 | if (delcnt != 0) | |
12883 | { | |
12884 | /* Note that we've changed the relocs, section contents, etc. */ | |
12885 | elf_section_data (sec)->relocs = internal_relocs; | |
12886 | elf_section_data (sec)->this_hdr.contents = contents; | |
12887 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12888 | ||
12889 | /* Delete bytes depending on the delcnt and deloff. */ | |
12890 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
12891 | irel->r_offset + deloff, delcnt)) | |
12892 | goto error_return; | |
12893 | ||
12894 | /* That will change things, so we should relax again. | |
12895 | Note that this is not required, and it may be slow. */ | |
12896 | *again = TRUE; | |
12897 | } | |
12898 | } | |
12899 | ||
12900 | if (isymbuf != NULL | |
12901 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12902 | { | |
12903 | if (! link_info->keep_memory) | |
12904 | free (isymbuf); | |
12905 | else | |
12906 | { | |
12907 | /* Cache the symbols for elf_link_input_bfd. */ | |
12908 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
12909 | } | |
12910 | } | |
12911 | ||
12912 | if (contents != NULL | |
12913 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12914 | { | |
12915 | if (! link_info->keep_memory) | |
12916 | free (contents); | |
12917 | else | |
12918 | { | |
12919 | /* Cache the section contents for elf_link_input_bfd. */ | |
12920 | elf_section_data (sec)->this_hdr.contents = contents; | |
12921 | } | |
12922 | } | |
12923 | ||
12924 | if (internal_relocs != NULL | |
12925 | && elf_section_data (sec)->relocs != internal_relocs) | |
12926 | free (internal_relocs); | |
12927 | ||
12928 | return TRUE; | |
12929 | ||
12930 | error_return: | |
12931 | if (isymbuf != NULL | |
12932 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
12933 | free (isymbuf); | |
12934 | if (contents != NULL | |
12935 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12936 | free (contents); | |
12937 | if (internal_relocs != NULL | |
12938 | && elf_section_data (sec)->relocs != internal_relocs) | |
12939 | free (internal_relocs); | |
12940 | ||
12941 | return FALSE; | |
12942 | } | |
12943 | \f | |
b49e97c9 TS |
12944 | /* Create a MIPS ELF linker hash table. */ |
12945 | ||
12946 | struct bfd_link_hash_table * | |
9719ad41 | 12947 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
12948 | { |
12949 | struct mips_elf_link_hash_table *ret; | |
12950 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
12951 | ||
9719ad41 RS |
12952 | ret = bfd_malloc (amt); |
12953 | if (ret == NULL) | |
b49e97c9 TS |
12954 | return NULL; |
12955 | ||
66eb6687 AM |
12956 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
12957 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
12958 | sizeof (struct mips_elf_link_hash_entry), |
12959 | MIPS_ELF_DATA)) | |
b49e97c9 | 12960 | { |
e2d34d7d | 12961 | free (ret); |
b49e97c9 TS |
12962 | return NULL; |
12963 | } | |
12964 | ||
12965 | #if 0 | |
12966 | /* We no longer use this. */ | |
12967 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
12968 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
12969 | #endif | |
12970 | ret->procedure_count = 0; | |
12971 | ret->compact_rel_size = 0; | |
b34976b6 | 12972 | ret->use_rld_obj_head = FALSE; |
b4082c70 | 12973 | ret->rld_symbol = NULL; |
b34976b6 | 12974 | ret->mips16_stubs_seen = FALSE; |
861fb55a | 12975 | ret->use_plts_and_copy_relocs = FALSE; |
0a44bf69 | 12976 | ret->is_vxworks = FALSE; |
0e53d9da | 12977 | ret->small_data_overflow_reported = FALSE; |
0a44bf69 RS |
12978 | ret->srelbss = NULL; |
12979 | ret->sdynbss = NULL; | |
12980 | ret->srelplt = NULL; | |
12981 | ret->srelplt2 = NULL; | |
12982 | ret->sgotplt = NULL; | |
12983 | ret->splt = NULL; | |
4e41d0d7 | 12984 | ret->sstubs = NULL; |
a8028dd0 RS |
12985 | ret->sgot = NULL; |
12986 | ret->got_info = NULL; | |
0a44bf69 RS |
12987 | ret->plt_header_size = 0; |
12988 | ret->plt_entry_size = 0; | |
33bb52fb | 12989 | ret->lazy_stub_count = 0; |
5108fc1b | 12990 | ret->function_stub_size = 0; |
861fb55a DJ |
12991 | ret->strampoline = NULL; |
12992 | ret->la25_stubs = NULL; | |
12993 | ret->add_stub_section = NULL; | |
b49e97c9 TS |
12994 | |
12995 | return &ret->root.root; | |
12996 | } | |
0a44bf69 RS |
12997 | |
12998 | /* Likewise, but indicate that the target is VxWorks. */ | |
12999 | ||
13000 | struct bfd_link_hash_table * | |
13001 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
13002 | { | |
13003 | struct bfd_link_hash_table *ret; | |
13004 | ||
13005 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
13006 | if (ret) | |
13007 | { | |
13008 | struct mips_elf_link_hash_table *htab; | |
13009 | ||
13010 | htab = (struct mips_elf_link_hash_table *) ret; | |
861fb55a DJ |
13011 | htab->use_plts_and_copy_relocs = TRUE; |
13012 | htab->is_vxworks = TRUE; | |
0a44bf69 RS |
13013 | } |
13014 | return ret; | |
13015 | } | |
861fb55a DJ |
13016 | |
13017 | /* A function that the linker calls if we are allowed to use PLTs | |
13018 | and copy relocs. */ | |
13019 | ||
13020 | void | |
13021 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
13022 | { | |
13023 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE; | |
13024 | } | |
b49e97c9 TS |
13025 | \f |
13026 | /* We need to use a special link routine to handle the .reginfo and | |
13027 | the .mdebug sections. We need to merge all instances of these | |
13028 | sections together, not write them all out sequentially. */ | |
13029 | ||
b34976b6 | 13030 | bfd_boolean |
9719ad41 | 13031 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 13032 | { |
b49e97c9 TS |
13033 | asection *o; |
13034 | struct bfd_link_order *p; | |
13035 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
13036 | asection *rtproc_sec; | |
13037 | Elf32_RegInfo reginfo; | |
13038 | struct ecoff_debug_info debug; | |
861fb55a | 13039 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
13040 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
13041 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 13042 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 13043 | void *mdebug_handle = NULL; |
b49e97c9 TS |
13044 | asection *s; |
13045 | EXTR esym; | |
13046 | unsigned int i; | |
13047 | bfd_size_type amt; | |
0a44bf69 | 13048 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
13049 | |
13050 | static const char * const secname[] = | |
13051 | { | |
13052 | ".text", ".init", ".fini", ".data", | |
13053 | ".rodata", ".sdata", ".sbss", ".bss" | |
13054 | }; | |
13055 | static const int sc[] = | |
13056 | { | |
13057 | scText, scInit, scFini, scData, | |
13058 | scRData, scSData, scSBss, scBss | |
13059 | }; | |
13060 | ||
d4596a51 RS |
13061 | /* Sort the dynamic symbols so that those with GOT entries come after |
13062 | those without. */ | |
0a44bf69 | 13063 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
13064 | BFD_ASSERT (htab != NULL); |
13065 | ||
d4596a51 RS |
13066 | if (!mips_elf_sort_hash_table (abfd, info)) |
13067 | return FALSE; | |
b49e97c9 | 13068 | |
861fb55a DJ |
13069 | /* Create any scheduled LA25 stubs. */ |
13070 | hti.info = info; | |
13071 | hti.output_bfd = abfd; | |
13072 | hti.error = FALSE; | |
13073 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); | |
13074 | if (hti.error) | |
13075 | return FALSE; | |
13076 | ||
b49e97c9 TS |
13077 | /* Get a value for the GP register. */ |
13078 | if (elf_gp (abfd) == 0) | |
13079 | { | |
13080 | struct bfd_link_hash_entry *h; | |
13081 | ||
b34976b6 | 13082 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 13083 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
13084 | elf_gp (abfd) = (h->u.def.value |
13085 | + h->u.def.section->output_section->vma | |
13086 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
13087 | else if (htab->is_vxworks |
13088 | && (h = bfd_link_hash_lookup (info->hash, | |
13089 | "_GLOBAL_OFFSET_TABLE_", | |
13090 | FALSE, FALSE, TRUE)) | |
13091 | && h->type == bfd_link_hash_defined) | |
13092 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
13093 | + h->u.def.section->output_offset | |
13094 | + h->u.def.value); | |
1049f94e | 13095 | else if (info->relocatable) |
b49e97c9 TS |
13096 | { |
13097 | bfd_vma lo = MINUS_ONE; | |
13098 | ||
13099 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 13100 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
13101 | if (o->vma < lo |
13102 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
13103 | lo = o->vma; | |
13104 | ||
13105 | /* And calculate GP relative to that. */ | |
0a44bf69 | 13106 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
13107 | } |
13108 | else | |
13109 | { | |
13110 | /* If the relocate_section function needs to do a reloc | |
13111 | involving the GP value, it should make a reloc_dangerous | |
13112 | callback to warn that GP is not defined. */ | |
13113 | } | |
13114 | } | |
13115 | ||
13116 | /* Go through the sections and collect the .reginfo and .mdebug | |
13117 | information. */ | |
13118 | reginfo_sec = NULL; | |
13119 | mdebug_sec = NULL; | |
13120 | gptab_data_sec = NULL; | |
13121 | gptab_bss_sec = NULL; | |
9719ad41 | 13122 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
13123 | { |
13124 | if (strcmp (o->name, ".reginfo") == 0) | |
13125 | { | |
13126 | memset (®info, 0, sizeof reginfo); | |
13127 | ||
13128 | /* We have found the .reginfo section in the output file. | |
13129 | Look through all the link_orders comprising it and merge | |
13130 | the information together. */ | |
8423293d | 13131 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13132 | { |
13133 | asection *input_section; | |
13134 | bfd *input_bfd; | |
13135 | Elf32_External_RegInfo ext; | |
13136 | Elf32_RegInfo sub; | |
13137 | ||
13138 | if (p->type != bfd_indirect_link_order) | |
13139 | { | |
13140 | if (p->type == bfd_data_link_order) | |
13141 | continue; | |
13142 | abort (); | |
13143 | } | |
13144 | ||
13145 | input_section = p->u.indirect.section; | |
13146 | input_bfd = input_section->owner; | |
13147 | ||
b49e97c9 | 13148 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 13149 | &ext, 0, sizeof ext)) |
b34976b6 | 13150 | return FALSE; |
b49e97c9 TS |
13151 | |
13152 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
13153 | ||
13154 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
13155 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
13156 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
13157 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
13158 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
13159 | ||
13160 | /* ri_gp_value is set by the function | |
13161 | mips_elf32_section_processing when the section is | |
13162 | finally written out. */ | |
13163 | ||
13164 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13165 | elf_link_input_bfd ignores this section. */ | |
13166 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13167 | } | |
13168 | ||
13169 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 13170 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
13171 | |
13172 | /* Skip this section later on (I don't think this currently | |
13173 | matters, but someday it might). */ | |
8423293d | 13174 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13175 | |
13176 | reginfo_sec = o; | |
13177 | } | |
13178 | ||
13179 | if (strcmp (o->name, ".mdebug") == 0) | |
13180 | { | |
13181 | struct extsym_info einfo; | |
13182 | bfd_vma last; | |
13183 | ||
13184 | /* We have found the .mdebug section in the output file. | |
13185 | Look through all the link_orders comprising it and merge | |
13186 | the information together. */ | |
13187 | symhdr->magic = swap->sym_magic; | |
13188 | /* FIXME: What should the version stamp be? */ | |
13189 | symhdr->vstamp = 0; | |
13190 | symhdr->ilineMax = 0; | |
13191 | symhdr->cbLine = 0; | |
13192 | symhdr->idnMax = 0; | |
13193 | symhdr->ipdMax = 0; | |
13194 | symhdr->isymMax = 0; | |
13195 | symhdr->ioptMax = 0; | |
13196 | symhdr->iauxMax = 0; | |
13197 | symhdr->issMax = 0; | |
13198 | symhdr->issExtMax = 0; | |
13199 | symhdr->ifdMax = 0; | |
13200 | symhdr->crfd = 0; | |
13201 | symhdr->iextMax = 0; | |
13202 | ||
13203 | /* We accumulate the debugging information itself in the | |
13204 | debug_info structure. */ | |
13205 | debug.line = NULL; | |
13206 | debug.external_dnr = NULL; | |
13207 | debug.external_pdr = NULL; | |
13208 | debug.external_sym = NULL; | |
13209 | debug.external_opt = NULL; | |
13210 | debug.external_aux = NULL; | |
13211 | debug.ss = NULL; | |
13212 | debug.ssext = debug.ssext_end = NULL; | |
13213 | debug.external_fdr = NULL; | |
13214 | debug.external_rfd = NULL; | |
13215 | debug.external_ext = debug.external_ext_end = NULL; | |
13216 | ||
13217 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 13218 | if (mdebug_handle == NULL) |
b34976b6 | 13219 | return FALSE; |
b49e97c9 TS |
13220 | |
13221 | esym.jmptbl = 0; | |
13222 | esym.cobol_main = 0; | |
13223 | esym.weakext = 0; | |
13224 | esym.reserved = 0; | |
13225 | esym.ifd = ifdNil; | |
13226 | esym.asym.iss = issNil; | |
13227 | esym.asym.st = stLocal; | |
13228 | esym.asym.reserved = 0; | |
13229 | esym.asym.index = indexNil; | |
13230 | last = 0; | |
13231 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
13232 | { | |
13233 | esym.asym.sc = sc[i]; | |
13234 | s = bfd_get_section_by_name (abfd, secname[i]); | |
13235 | if (s != NULL) | |
13236 | { | |
13237 | esym.asym.value = s->vma; | |
eea6121a | 13238 | last = s->vma + s->size; |
b49e97c9 TS |
13239 | } |
13240 | else | |
13241 | esym.asym.value = last; | |
13242 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
13243 | secname[i], &esym)) | |
b34976b6 | 13244 | return FALSE; |
b49e97c9 TS |
13245 | } |
13246 | ||
8423293d | 13247 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13248 | { |
13249 | asection *input_section; | |
13250 | bfd *input_bfd; | |
13251 | const struct ecoff_debug_swap *input_swap; | |
13252 | struct ecoff_debug_info input_debug; | |
13253 | char *eraw_src; | |
13254 | char *eraw_end; | |
13255 | ||
13256 | if (p->type != bfd_indirect_link_order) | |
13257 | { | |
13258 | if (p->type == bfd_data_link_order) | |
13259 | continue; | |
13260 | abort (); | |
13261 | } | |
13262 | ||
13263 | input_section = p->u.indirect.section; | |
13264 | input_bfd = input_section->owner; | |
13265 | ||
d5eaccd7 | 13266 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
13267 | { |
13268 | /* I don't know what a non MIPS ELF bfd would be | |
13269 | doing with a .mdebug section, but I don't really | |
13270 | want to deal with it. */ | |
13271 | continue; | |
13272 | } | |
13273 | ||
13274 | input_swap = (get_elf_backend_data (input_bfd) | |
13275 | ->elf_backend_ecoff_debug_swap); | |
13276 | ||
eea6121a | 13277 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
13278 | |
13279 | /* The ECOFF linking code expects that we have already | |
13280 | read in the debugging information and set up an | |
13281 | ecoff_debug_info structure, so we do that now. */ | |
13282 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
13283 | &input_debug)) | |
b34976b6 | 13284 | return FALSE; |
b49e97c9 TS |
13285 | |
13286 | if (! (bfd_ecoff_debug_accumulate | |
13287 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
13288 | &input_debug, input_swap, info))) | |
b34976b6 | 13289 | return FALSE; |
b49e97c9 TS |
13290 | |
13291 | /* Loop through the external symbols. For each one with | |
13292 | interesting information, try to find the symbol in | |
13293 | the linker global hash table and save the information | |
13294 | for the output external symbols. */ | |
13295 | eraw_src = input_debug.external_ext; | |
13296 | eraw_end = (eraw_src | |
13297 | + (input_debug.symbolic_header.iextMax | |
13298 | * input_swap->external_ext_size)); | |
13299 | for (; | |
13300 | eraw_src < eraw_end; | |
13301 | eraw_src += input_swap->external_ext_size) | |
13302 | { | |
13303 | EXTR ext; | |
13304 | const char *name; | |
13305 | struct mips_elf_link_hash_entry *h; | |
13306 | ||
9719ad41 | 13307 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
13308 | if (ext.asym.sc == scNil |
13309 | || ext.asym.sc == scUndefined | |
13310 | || ext.asym.sc == scSUndefined) | |
13311 | continue; | |
13312 | ||
13313 | name = input_debug.ssext + ext.asym.iss; | |
13314 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 13315 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
13316 | if (h == NULL || h->esym.ifd != -2) |
13317 | continue; | |
13318 | ||
13319 | if (ext.ifd != -1) | |
13320 | { | |
13321 | BFD_ASSERT (ext.ifd | |
13322 | < input_debug.symbolic_header.ifdMax); | |
13323 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
13324 | } | |
13325 | ||
13326 | h->esym = ext; | |
13327 | } | |
13328 | ||
13329 | /* Free up the information we just read. */ | |
13330 | free (input_debug.line); | |
13331 | free (input_debug.external_dnr); | |
13332 | free (input_debug.external_pdr); | |
13333 | free (input_debug.external_sym); | |
13334 | free (input_debug.external_opt); | |
13335 | free (input_debug.external_aux); | |
13336 | free (input_debug.ss); | |
13337 | free (input_debug.ssext); | |
13338 | free (input_debug.external_fdr); | |
13339 | free (input_debug.external_rfd); | |
13340 | free (input_debug.external_ext); | |
13341 | ||
13342 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13343 | elf_link_input_bfd ignores this section. */ | |
13344 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13345 | } | |
13346 | ||
13347 | if (SGI_COMPAT (abfd) && info->shared) | |
13348 | { | |
13349 | /* Create .rtproc section. */ | |
87e0a731 | 13350 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
13351 | if (rtproc_sec == NULL) |
13352 | { | |
13353 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
13354 | | SEC_LINKER_CREATED | SEC_READONLY); | |
13355 | ||
87e0a731 AM |
13356 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
13357 | ".rtproc", | |
13358 | flags); | |
b49e97c9 | 13359 | if (rtproc_sec == NULL |
b49e97c9 | 13360 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 13361 | return FALSE; |
b49e97c9 TS |
13362 | } |
13363 | ||
13364 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
13365 | info, rtproc_sec, | |
13366 | &debug)) | |
b34976b6 | 13367 | return FALSE; |
b49e97c9 TS |
13368 | } |
13369 | ||
13370 | /* Build the external symbol information. */ | |
13371 | einfo.abfd = abfd; | |
13372 | einfo.info = info; | |
13373 | einfo.debug = &debug; | |
13374 | einfo.swap = swap; | |
b34976b6 | 13375 | einfo.failed = FALSE; |
b49e97c9 | 13376 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 13377 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 13378 | if (einfo.failed) |
b34976b6 | 13379 | return FALSE; |
b49e97c9 TS |
13380 | |
13381 | /* Set the size of the .mdebug section. */ | |
eea6121a | 13382 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
13383 | |
13384 | /* Skip this section later on (I don't think this currently | |
13385 | matters, but someday it might). */ | |
8423293d | 13386 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13387 | |
13388 | mdebug_sec = o; | |
13389 | } | |
13390 | ||
0112cd26 | 13391 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
13392 | { |
13393 | const char *subname; | |
13394 | unsigned int c; | |
13395 | Elf32_gptab *tab; | |
13396 | Elf32_External_gptab *ext_tab; | |
13397 | unsigned int j; | |
13398 | ||
13399 | /* The .gptab.sdata and .gptab.sbss sections hold | |
13400 | information describing how the small data area would | |
13401 | change depending upon the -G switch. These sections | |
13402 | not used in executables files. */ | |
1049f94e | 13403 | if (! info->relocatable) |
b49e97c9 | 13404 | { |
8423293d | 13405 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13406 | { |
13407 | asection *input_section; | |
13408 | ||
13409 | if (p->type != bfd_indirect_link_order) | |
13410 | { | |
13411 | if (p->type == bfd_data_link_order) | |
13412 | continue; | |
13413 | abort (); | |
13414 | } | |
13415 | ||
13416 | input_section = p->u.indirect.section; | |
13417 | ||
13418 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13419 | elf_link_input_bfd ignores this section. */ | |
13420 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13421 | } | |
13422 | ||
13423 | /* Skip this section later on (I don't think this | |
13424 | currently matters, but someday it might). */ | |
8423293d | 13425 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13426 | |
13427 | /* Really remove the section. */ | |
5daa8fe7 | 13428 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
13429 | --abfd->section_count; |
13430 | ||
13431 | continue; | |
13432 | } | |
13433 | ||
13434 | /* There is one gptab for initialized data, and one for | |
13435 | uninitialized data. */ | |
13436 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
13437 | gptab_data_sec = o; | |
13438 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
13439 | gptab_bss_sec = o; | |
13440 | else | |
13441 | { | |
13442 | (*_bfd_error_handler) | |
13443 | (_("%s: illegal section name `%s'"), | |
13444 | bfd_get_filename (abfd), o->name); | |
13445 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 13446 | return FALSE; |
b49e97c9 TS |
13447 | } |
13448 | ||
13449 | /* The linker script always combines .gptab.data and | |
13450 | .gptab.sdata into .gptab.sdata, and likewise for | |
13451 | .gptab.bss and .gptab.sbss. It is possible that there is | |
13452 | no .sdata or .sbss section in the output file, in which | |
13453 | case we must change the name of the output section. */ | |
13454 | subname = o->name + sizeof ".gptab" - 1; | |
13455 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
13456 | { | |
13457 | if (o == gptab_data_sec) | |
13458 | o->name = ".gptab.data"; | |
13459 | else | |
13460 | o->name = ".gptab.bss"; | |
13461 | subname = o->name + sizeof ".gptab" - 1; | |
13462 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
13463 | } | |
13464 | ||
13465 | /* Set up the first entry. */ | |
13466 | c = 1; | |
13467 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 13468 | tab = bfd_malloc (amt); |
b49e97c9 | 13469 | if (tab == NULL) |
b34976b6 | 13470 | return FALSE; |
b49e97c9 TS |
13471 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
13472 | tab[0].gt_header.gt_unused = 0; | |
13473 | ||
13474 | /* Combine the input sections. */ | |
8423293d | 13475 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
13476 | { |
13477 | asection *input_section; | |
13478 | bfd *input_bfd; | |
13479 | bfd_size_type size; | |
13480 | unsigned long last; | |
13481 | bfd_size_type gpentry; | |
13482 | ||
13483 | if (p->type != bfd_indirect_link_order) | |
13484 | { | |
13485 | if (p->type == bfd_data_link_order) | |
13486 | continue; | |
13487 | abort (); | |
13488 | } | |
13489 | ||
13490 | input_section = p->u.indirect.section; | |
13491 | input_bfd = input_section->owner; | |
13492 | ||
13493 | /* Combine the gptab entries for this input section one | |
13494 | by one. We know that the input gptab entries are | |
13495 | sorted by ascending -G value. */ | |
eea6121a | 13496 | size = input_section->size; |
b49e97c9 TS |
13497 | last = 0; |
13498 | for (gpentry = sizeof (Elf32_External_gptab); | |
13499 | gpentry < size; | |
13500 | gpentry += sizeof (Elf32_External_gptab)) | |
13501 | { | |
13502 | Elf32_External_gptab ext_gptab; | |
13503 | Elf32_gptab int_gptab; | |
13504 | unsigned long val; | |
13505 | unsigned long add; | |
b34976b6 | 13506 | bfd_boolean exact; |
b49e97c9 TS |
13507 | unsigned int look; |
13508 | ||
13509 | if (! (bfd_get_section_contents | |
9719ad41 RS |
13510 | (input_bfd, input_section, &ext_gptab, gpentry, |
13511 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
13512 | { |
13513 | free (tab); | |
b34976b6 | 13514 | return FALSE; |
b49e97c9 TS |
13515 | } |
13516 | ||
13517 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
13518 | &int_gptab); | |
13519 | val = int_gptab.gt_entry.gt_g_value; | |
13520 | add = int_gptab.gt_entry.gt_bytes - last; | |
13521 | ||
b34976b6 | 13522 | exact = FALSE; |
b49e97c9 TS |
13523 | for (look = 1; look < c; look++) |
13524 | { | |
13525 | if (tab[look].gt_entry.gt_g_value >= val) | |
13526 | tab[look].gt_entry.gt_bytes += add; | |
13527 | ||
13528 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 13529 | exact = TRUE; |
b49e97c9 TS |
13530 | } |
13531 | ||
13532 | if (! exact) | |
13533 | { | |
13534 | Elf32_gptab *new_tab; | |
13535 | unsigned int max; | |
13536 | ||
13537 | /* We need a new table entry. */ | |
13538 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 13539 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
13540 | if (new_tab == NULL) |
13541 | { | |
13542 | free (tab); | |
b34976b6 | 13543 | return FALSE; |
b49e97c9 TS |
13544 | } |
13545 | tab = new_tab; | |
13546 | tab[c].gt_entry.gt_g_value = val; | |
13547 | tab[c].gt_entry.gt_bytes = add; | |
13548 | ||
13549 | /* Merge in the size for the next smallest -G | |
13550 | value, since that will be implied by this new | |
13551 | value. */ | |
13552 | max = 0; | |
13553 | for (look = 1; look < c; look++) | |
13554 | { | |
13555 | if (tab[look].gt_entry.gt_g_value < val | |
13556 | && (max == 0 | |
13557 | || (tab[look].gt_entry.gt_g_value | |
13558 | > tab[max].gt_entry.gt_g_value))) | |
13559 | max = look; | |
13560 | } | |
13561 | if (max != 0) | |
13562 | tab[c].gt_entry.gt_bytes += | |
13563 | tab[max].gt_entry.gt_bytes; | |
13564 | ||
13565 | ++c; | |
13566 | } | |
13567 | ||
13568 | last = int_gptab.gt_entry.gt_bytes; | |
13569 | } | |
13570 | ||
13571 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
13572 | elf_link_input_bfd ignores this section. */ | |
13573 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
13574 | } | |
13575 | ||
13576 | /* The table must be sorted by -G value. */ | |
13577 | if (c > 2) | |
13578 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
13579 | ||
13580 | /* Swap out the table. */ | |
13581 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 13582 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
13583 | if (ext_tab == NULL) |
13584 | { | |
13585 | free (tab); | |
b34976b6 | 13586 | return FALSE; |
b49e97c9 TS |
13587 | } |
13588 | ||
13589 | for (j = 0; j < c; j++) | |
13590 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
13591 | free (tab); | |
13592 | ||
eea6121a | 13593 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
13594 | o->contents = (bfd_byte *) ext_tab; |
13595 | ||
13596 | /* Skip this section later on (I don't think this currently | |
13597 | matters, but someday it might). */ | |
8423293d | 13598 | o->map_head.link_order = NULL; |
b49e97c9 TS |
13599 | } |
13600 | } | |
13601 | ||
13602 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 13603 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 13604 | return FALSE; |
b49e97c9 TS |
13605 | |
13606 | /* Now write out the computed sections. */ | |
13607 | ||
9719ad41 | 13608 | if (reginfo_sec != NULL) |
b49e97c9 TS |
13609 | { |
13610 | Elf32_External_RegInfo ext; | |
13611 | ||
13612 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 13613 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 13614 | return FALSE; |
b49e97c9 TS |
13615 | } |
13616 | ||
9719ad41 | 13617 | if (mdebug_sec != NULL) |
b49e97c9 TS |
13618 | { |
13619 | BFD_ASSERT (abfd->output_has_begun); | |
13620 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
13621 | swap, info, | |
13622 | mdebug_sec->filepos)) | |
b34976b6 | 13623 | return FALSE; |
b49e97c9 TS |
13624 | |
13625 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
13626 | } | |
13627 | ||
9719ad41 | 13628 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
13629 | { |
13630 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
13631 | gptab_data_sec->contents, | |
eea6121a | 13632 | 0, gptab_data_sec->size)) |
b34976b6 | 13633 | return FALSE; |
b49e97c9 TS |
13634 | } |
13635 | ||
9719ad41 | 13636 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
13637 | { |
13638 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
13639 | gptab_bss_sec->contents, | |
eea6121a | 13640 | 0, gptab_bss_sec->size)) |
b34976b6 | 13641 | return FALSE; |
b49e97c9 TS |
13642 | } |
13643 | ||
13644 | if (SGI_COMPAT (abfd)) | |
13645 | { | |
13646 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
13647 | if (rtproc_sec != NULL) | |
13648 | { | |
13649 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
13650 | rtproc_sec->contents, | |
eea6121a | 13651 | 0, rtproc_sec->size)) |
b34976b6 | 13652 | return FALSE; |
b49e97c9 TS |
13653 | } |
13654 | } | |
13655 | ||
b34976b6 | 13656 | return TRUE; |
b49e97c9 TS |
13657 | } |
13658 | \f | |
64543e1a RS |
13659 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
13660 | ||
13661 | struct mips_mach_extension { | |
13662 | unsigned long extension, base; | |
13663 | }; | |
13664 | ||
13665 | ||
13666 | /* An array describing how BFD machines relate to one another. The entries | |
13667 | are ordered topologically with MIPS I extensions listed last. */ | |
13668 | ||
13669 | static const struct mips_mach_extension mips_mach_extensions[] = { | |
6f179bd0 | 13670 | /* MIPS64r2 extensions. */ |
432233b3 | 13671 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, |
dd6a37e7 | 13672 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, |
6f179bd0 AN |
13673 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, |
13674 | ||
64543e1a | 13675 | /* MIPS64 extensions. */ |
5f74bc13 | 13676 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a | 13677 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
52b6b6b9 | 13678 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, |
fd503541 | 13679 | { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64 }, |
64543e1a RS |
13680 | |
13681 | /* MIPS V extensions. */ | |
13682 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
13683 | ||
13684 | /* R10000 extensions. */ | |
13685 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
3aa3176b TS |
13686 | { bfd_mach_mips14000, bfd_mach_mips10000 }, |
13687 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
64543e1a RS |
13688 | |
13689 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
13690 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
13691 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
13692 | many libraries will just use the core ISA. Perhaps we could add | |
13693 | some sort of ASE flag if this ever proves a problem. */ | |
13694 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
13695 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
13696 | ||
13697 | /* MIPS IV extensions. */ | |
13698 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
13699 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
13700 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 13701 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 13702 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
13703 | |
13704 | /* VR4100 extensions. */ | |
13705 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
13706 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
13707 | ||
13708 | /* MIPS III extensions. */ | |
350cc38d MS |
13709 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
13710 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
13711 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
13712 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
13713 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
13714 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
13715 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
13716 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
13717 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
e407c74b | 13718 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
64543e1a RS |
13719 | |
13720 | /* MIPS32 extensions. */ | |
13721 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
13722 | ||
13723 | /* MIPS II extensions. */ | |
13724 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
13725 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
13726 | ||
13727 | /* MIPS I extensions. */ | |
13728 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
13729 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
13730 | }; | |
13731 | ||
13732 | ||
13733 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
13734 | ||
13735 | static bfd_boolean | |
9719ad41 | 13736 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
13737 | { |
13738 | size_t i; | |
13739 | ||
c5211a54 RS |
13740 | if (extension == base) |
13741 | return TRUE; | |
13742 | ||
13743 | if (base == bfd_mach_mipsisa32 | |
13744 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
13745 | return TRUE; | |
13746 | ||
13747 | if (base == bfd_mach_mipsisa32r2 | |
13748 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
13749 | return TRUE; | |
13750 | ||
13751 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 13752 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
13753 | { |
13754 | extension = mips_mach_extensions[i].base; | |
13755 | if (extension == base) | |
13756 | return TRUE; | |
13757 | } | |
64543e1a | 13758 | |
c5211a54 | 13759 | return FALSE; |
64543e1a RS |
13760 | } |
13761 | ||
13762 | ||
13763 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 13764 | |
b34976b6 | 13765 | static bfd_boolean |
9719ad41 | 13766 | mips_32bit_flags_p (flagword flags) |
00707a0e | 13767 | { |
64543e1a RS |
13768 | return ((flags & EF_MIPS_32BITMODE) != 0 |
13769 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
13770 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
13771 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
13772 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
13773 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
13774 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
13775 | } |
13776 | ||
64543e1a | 13777 | |
2cf19d5c JM |
13778 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
13779 | there are conflicting attributes. */ | |
13780 | static bfd_boolean | |
13781 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
13782 | { | |
13783 | obj_attribute *in_attr; | |
13784 | obj_attribute *out_attr; | |
6ae68ba3 MR |
13785 | bfd *abi_fp_bfd; |
13786 | ||
13787 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
13788 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
13789 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) | |
13790 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
2cf19d5c JM |
13791 | |
13792 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
13793 | { | |
13794 | /* This is the first object. Copy the attributes. */ | |
13795 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
13796 | ||
13797 | /* Use the Tag_null value to indicate the attributes have been | |
13798 | initialized. */ | |
13799 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
13800 | ||
13801 | return TRUE; | |
13802 | } | |
13803 | ||
13804 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
13805 | non-conflicting ones. */ | |
2cf19d5c JM |
13806 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
13807 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13808 | { | |
13809 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
13810 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
13811 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
6ae68ba3 | 13812 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i != 0) |
2cf19d5c JM |
13813 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) |
13814 | { | |
13815 | case 1: | |
13816 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13817 | { | |
13818 | case 2: | |
13819 | _bfd_error_handler | |
6ae68ba3 MR |
13820 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13821 | obfd, abi_fp_bfd, ibfd, "-mdouble-float", "-msingle-float"); | |
51a0dd31 | 13822 | break; |
2cf19d5c JM |
13823 | |
13824 | case 3: | |
13825 | _bfd_error_handler | |
6ae68ba3 MR |
13826 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13827 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13828 | break; |
13829 | ||
42554f6a TS |
13830 | case 4: |
13831 | _bfd_error_handler | |
6ae68ba3 MR |
13832 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13833 | obfd, abi_fp_bfd, ibfd, | |
13834 | "-mdouble-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13835 | break; |
13836 | ||
2cf19d5c | 13837 | default: |
6ae68ba3 MR |
13838 | _bfd_error_handler |
13839 | (_("Warning: %B uses %s (set by %B), " | |
13840 | "%B uses unknown floating point ABI %d"), | |
13841 | obfd, abi_fp_bfd, ibfd, | |
13842 | "-mdouble-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13843 | break; | |
2cf19d5c JM |
13844 | } |
13845 | break; | |
13846 | ||
13847 | case 2: | |
13848 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13849 | { | |
13850 | case 1: | |
13851 | _bfd_error_handler | |
6ae68ba3 MR |
13852 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13853 | obfd, abi_fp_bfd, ibfd, "-msingle-float", "-mdouble-float"); | |
51a0dd31 | 13854 | break; |
2cf19d5c JM |
13855 | |
13856 | case 3: | |
13857 | _bfd_error_handler | |
6ae68ba3 MR |
13858 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13859 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
2cf19d5c JM |
13860 | break; |
13861 | ||
42554f6a TS |
13862 | case 4: |
13863 | _bfd_error_handler | |
6ae68ba3 MR |
13864 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13865 | obfd, abi_fp_bfd, ibfd, | |
13866 | "-msingle-float", "-mips32r2 -mfp64"); | |
42554f6a TS |
13867 | break; |
13868 | ||
2cf19d5c | 13869 | default: |
6ae68ba3 MR |
13870 | _bfd_error_handler |
13871 | (_("Warning: %B uses %s (set by %B), " | |
13872 | "%B uses unknown floating point ABI %d"), | |
13873 | obfd, abi_fp_bfd, ibfd, | |
13874 | "-msingle-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13875 | break; | |
2cf19d5c JM |
13876 | } |
13877 | break; | |
13878 | ||
13879 | case 3: | |
13880 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13881 | { | |
13882 | case 1: | |
13883 | case 2: | |
42554f6a | 13884 | case 4: |
2cf19d5c | 13885 | _bfd_error_handler |
6ae68ba3 MR |
13886 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13887 | obfd, abi_fp_bfd, ibfd, "-msoft-float", "-mhard-float"); | |
2cf19d5c JM |
13888 | break; |
13889 | ||
13890 | default: | |
6ae68ba3 MR |
13891 | _bfd_error_handler |
13892 | (_("Warning: %B uses %s (set by %B), " | |
13893 | "%B uses unknown floating point ABI %d"), | |
13894 | obfd, abi_fp_bfd, ibfd, | |
13895 | "-msoft-float", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13896 | break; | |
2cf19d5c JM |
13897 | } |
13898 | break; | |
13899 | ||
42554f6a TS |
13900 | case 4: |
13901 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
13902 | { | |
13903 | case 1: | |
13904 | _bfd_error_handler | |
6ae68ba3 MR |
13905 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13906 | obfd, abi_fp_bfd, ibfd, | |
13907 | "-mips32r2 -mfp64", "-mdouble-float"); | |
42554f6a TS |
13908 | break; |
13909 | ||
13910 | case 2: | |
13911 | _bfd_error_handler | |
6ae68ba3 MR |
13912 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13913 | obfd, abi_fp_bfd, ibfd, | |
13914 | "-mips32r2 -mfp64", "-msingle-float"); | |
42554f6a TS |
13915 | break; |
13916 | ||
13917 | case 3: | |
13918 | _bfd_error_handler | |
6ae68ba3 MR |
13919 | (_("Warning: %B uses %s (set by %B), %B uses %s"), |
13920 | obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float"); | |
42554f6a TS |
13921 | break; |
13922 | ||
13923 | default: | |
6ae68ba3 MR |
13924 | _bfd_error_handler |
13925 | (_("Warning: %B uses %s (set by %B), " | |
13926 | "%B uses unknown floating point ABI %d"), | |
13927 | obfd, abi_fp_bfd, ibfd, | |
13928 | "-mips32r2 -mfp64", in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13929 | break; | |
42554f6a TS |
13930 | } |
13931 | break; | |
13932 | ||
2cf19d5c | 13933 | default: |
6ae68ba3 MR |
13934 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) |
13935 | { | |
13936 | case 1: | |
13937 | _bfd_error_handler | |
13938 | (_("Warning: %B uses unknown floating point ABI %d " | |
13939 | "(set by %B), %B uses %s"), | |
13940 | obfd, abi_fp_bfd, ibfd, | |
13941 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mdouble-float"); | |
13942 | break; | |
13943 | ||
13944 | case 2: | |
13945 | _bfd_error_handler | |
13946 | (_("Warning: %B uses unknown floating point ABI %d " | |
13947 | "(set by %B), %B uses %s"), | |
13948 | obfd, abi_fp_bfd, ibfd, | |
13949 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msingle-float"); | |
13950 | break; | |
13951 | ||
13952 | case 3: | |
13953 | _bfd_error_handler | |
13954 | (_("Warning: %B uses unknown floating point ABI %d " | |
13955 | "(set by %B), %B uses %s"), | |
13956 | obfd, abi_fp_bfd, ibfd, | |
13957 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msoft-float"); | |
13958 | break; | |
13959 | ||
13960 | case 4: | |
13961 | _bfd_error_handler | |
13962 | (_("Warning: %B uses unknown floating point ABI %d " | |
13963 | "(set by %B), %B uses %s"), | |
13964 | obfd, abi_fp_bfd, ibfd, | |
13965 | out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mips32r2 -mfp64"); | |
13966 | break; | |
13967 | ||
13968 | default: | |
13969 | _bfd_error_handler | |
13970 | (_("Warning: %B uses unknown floating point ABI %d " | |
13971 | "(set by %B), %B uses unknown floating point ABI %d"), | |
13972 | obfd, abi_fp_bfd, ibfd, | |
13973 | out_attr[Tag_GNU_MIPS_ABI_FP].i, | |
13974 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
13975 | break; | |
13976 | } | |
13977 | break; | |
2cf19d5c JM |
13978 | } |
13979 | } | |
13980 | ||
13981 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
13982 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
13983 | ||
13984 | return TRUE; | |
13985 | } | |
13986 | ||
b49e97c9 TS |
13987 | /* Merge backend specific data from an object file to the output |
13988 | object file when linking. */ | |
13989 | ||
b34976b6 | 13990 | bfd_boolean |
9719ad41 | 13991 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
13992 | { |
13993 | flagword old_flags; | |
13994 | flagword new_flags; | |
b34976b6 AM |
13995 | bfd_boolean ok; |
13996 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
13997 | asection *sec; |
13998 | ||
58238693 | 13999 | /* Check if we have the same endianness. */ |
82e51918 | 14000 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
14001 | { |
14002 | (*_bfd_error_handler) | |
d003868e AM |
14003 | (_("%B: endianness incompatible with that of the selected emulation"), |
14004 | ibfd); | |
aa701218 AO |
14005 | return FALSE; |
14006 | } | |
b49e97c9 | 14007 | |
d5eaccd7 | 14008 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
b34976b6 | 14009 | return TRUE; |
b49e97c9 | 14010 | |
aa701218 AO |
14011 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
14012 | { | |
14013 | (*_bfd_error_handler) | |
d003868e AM |
14014 | (_("%B: ABI is incompatible with that of the selected emulation"), |
14015 | ibfd); | |
aa701218 AO |
14016 | return FALSE; |
14017 | } | |
14018 | ||
2cf19d5c JM |
14019 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
14020 | return FALSE; | |
14021 | ||
b49e97c9 TS |
14022 | new_flags = elf_elfheader (ibfd)->e_flags; |
14023 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
14024 | old_flags = elf_elfheader (obfd)->e_flags; | |
14025 | ||
14026 | if (! elf_flags_init (obfd)) | |
14027 | { | |
b34976b6 | 14028 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
14029 | elf_elfheader (obfd)->e_flags = new_flags; |
14030 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
14031 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
14032 | ||
14033 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 14034 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 14035 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 14036 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
14037 | { |
14038 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
14039 | bfd_get_mach (ibfd))) | |
b34976b6 | 14040 | return FALSE; |
b49e97c9 TS |
14041 | } |
14042 | ||
b34976b6 | 14043 | return TRUE; |
b49e97c9 TS |
14044 | } |
14045 | ||
14046 | /* Check flag compatibility. */ | |
14047 | ||
14048 | new_flags &= ~EF_MIPS_NOREORDER; | |
14049 | old_flags &= ~EF_MIPS_NOREORDER; | |
14050 | ||
f4416af6 AO |
14051 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
14052 | doesn't seem to matter. */ | |
14053 | new_flags &= ~EF_MIPS_XGOT; | |
14054 | old_flags &= ~EF_MIPS_XGOT; | |
14055 | ||
98a8deaf RS |
14056 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
14057 | just be able to ignore this. */ | |
14058 | new_flags &= ~EF_MIPS_UCODE; | |
14059 | old_flags &= ~EF_MIPS_UCODE; | |
14060 | ||
861fb55a DJ |
14061 | /* DSOs should only be linked with CPIC code. */ |
14062 | if ((ibfd->flags & DYNAMIC) != 0) | |
14063 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
0a44bf69 | 14064 | |
b49e97c9 | 14065 | if (new_flags == old_flags) |
b34976b6 | 14066 | return TRUE; |
b49e97c9 TS |
14067 | |
14068 | /* Check to see if the input BFD actually contains any sections. | |
14069 | If not, its flags may not have been initialised either, but it cannot | |
14070 | actually cause any incompatibility. */ | |
14071 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
14072 | { | |
14073 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
ed88c97e RS |
14074 | which are automatically generated by gas. Also ignore fake |
14075 | (s)common sections, since merely defining a common symbol does | |
14076 | not affect compatibility. */ | |
14077 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
14078 | && strcmp (sec->name, ".reginfo") | |
b49e97c9 | 14079 | && strcmp (sec->name, ".mdebug") |
eea6121a | 14080 | && (sec->size != 0 |
d13d89fa NS |
14081 | || (strcmp (sec->name, ".text") |
14082 | && strcmp (sec->name, ".data") | |
14083 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 14084 | { |
b34976b6 | 14085 | null_input_bfd = FALSE; |
b49e97c9 TS |
14086 | break; |
14087 | } | |
14088 | } | |
14089 | if (null_input_bfd) | |
b34976b6 | 14090 | return TRUE; |
b49e97c9 | 14091 | |
b34976b6 | 14092 | ok = TRUE; |
b49e97c9 | 14093 | |
143d77c5 EC |
14094 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
14095 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 14096 | { |
b49e97c9 | 14097 | (*_bfd_error_handler) |
861fb55a | 14098 | (_("%B: warning: linking abicalls files with non-abicalls files"), |
d003868e | 14099 | ibfd); |
143d77c5 | 14100 | ok = TRUE; |
b49e97c9 TS |
14101 | } |
14102 | ||
143d77c5 EC |
14103 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
14104 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
14105 | if (! (new_flags & EF_MIPS_PIC)) | |
14106 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
14107 | ||
14108 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
14109 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 14110 | |
64543e1a RS |
14111 | /* Compare the ISAs. */ |
14112 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 14113 | { |
64543e1a | 14114 | (*_bfd_error_handler) |
d003868e AM |
14115 | (_("%B: linking 32-bit code with 64-bit code"), |
14116 | ibfd); | |
64543e1a RS |
14117 | ok = FALSE; |
14118 | } | |
14119 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
14120 | { | |
14121 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
14122 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 14123 | { |
64543e1a RS |
14124 | /* Copy the architecture info from IBFD to OBFD. Also copy |
14125 | the 32-bit flag (if set) so that we continue to recognise | |
14126 | OBFD as a 32-bit binary. */ | |
14127 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
14128 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
14129 | elf_elfheader (obfd)->e_flags | |
14130 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14131 | ||
14132 | /* Copy across the ABI flags if OBFD doesn't use them | |
14133 | and if that was what caused us to treat IBFD as 32-bit. */ | |
14134 | if ((old_flags & EF_MIPS_ABI) == 0 | |
14135 | && mips_32bit_flags_p (new_flags) | |
14136 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
14137 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
14138 | } |
14139 | else | |
14140 | { | |
64543e1a | 14141 | /* The ISAs aren't compatible. */ |
b49e97c9 | 14142 | (*_bfd_error_handler) |
d003868e AM |
14143 | (_("%B: linking %s module with previous %s modules"), |
14144 | ibfd, | |
64543e1a RS |
14145 | bfd_printable_name (ibfd), |
14146 | bfd_printable_name (obfd)); | |
b34976b6 | 14147 | ok = FALSE; |
b49e97c9 | 14148 | } |
b49e97c9 TS |
14149 | } |
14150 | ||
64543e1a RS |
14151 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
14152 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
14153 | ||
14154 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
14155 | does set EI_CLASS differently from any 32-bit ABI. */ |
14156 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
14157 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14158 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14159 | { | |
14160 | /* Only error if both are set (to different values). */ | |
14161 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
14162 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
14163 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
14164 | { | |
14165 | (*_bfd_error_handler) | |
d003868e AM |
14166 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
14167 | ibfd, | |
b49e97c9 TS |
14168 | elf_mips_abi_name (ibfd), |
14169 | elf_mips_abi_name (obfd)); | |
b34976b6 | 14170 | ok = FALSE; |
b49e97c9 TS |
14171 | } |
14172 | new_flags &= ~EF_MIPS_ABI; | |
14173 | old_flags &= ~EF_MIPS_ABI; | |
14174 | } | |
14175 | ||
df58fc94 RS |
14176 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together |
14177 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
fb39dac1 RS |
14178 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) |
14179 | { | |
df58fc94 RS |
14180 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; |
14181 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
14182 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
14183 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
14184 | int micro_mis = old_m16 && new_micro; | |
14185 | int m16_mis = old_micro && new_m16; | |
14186 | ||
14187 | if (m16_mis || micro_mis) | |
14188 | { | |
14189 | (*_bfd_error_handler) | |
14190 | (_("%B: ASE mismatch: linking %s module with previous %s modules"), | |
14191 | ibfd, | |
14192 | m16_mis ? "MIPS16" : "microMIPS", | |
14193 | m16_mis ? "microMIPS" : "MIPS16"); | |
14194 | ok = FALSE; | |
14195 | } | |
14196 | ||
fb39dac1 RS |
14197 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; |
14198 | ||
14199 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
14200 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
14201 | } | |
14202 | ||
b49e97c9 TS |
14203 | /* Warn about any other mismatches */ |
14204 | if (new_flags != old_flags) | |
14205 | { | |
14206 | (*_bfd_error_handler) | |
d003868e AM |
14207 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
14208 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 14209 | (unsigned long) old_flags); |
b34976b6 | 14210 | ok = FALSE; |
b49e97c9 TS |
14211 | } |
14212 | ||
14213 | if (! ok) | |
14214 | { | |
14215 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14216 | return FALSE; |
b49e97c9 TS |
14217 | } |
14218 | ||
b34976b6 | 14219 | return TRUE; |
b49e97c9 TS |
14220 | } |
14221 | ||
14222 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
14223 | ||
b34976b6 | 14224 | bfd_boolean |
9719ad41 | 14225 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
14226 | { |
14227 | BFD_ASSERT (!elf_flags_init (abfd) | |
14228 | || elf_elfheader (abfd)->e_flags == flags); | |
14229 | ||
14230 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
14231 | elf_flags_init (abfd) = TRUE; |
14232 | return TRUE; | |
b49e97c9 TS |
14233 | } |
14234 | ||
ad9563d6 CM |
14235 | char * |
14236 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
14237 | { | |
14238 | switch (dtag) | |
14239 | { | |
14240 | default: return ""; | |
14241 | case DT_MIPS_RLD_VERSION: | |
14242 | return "MIPS_RLD_VERSION"; | |
14243 | case DT_MIPS_TIME_STAMP: | |
14244 | return "MIPS_TIME_STAMP"; | |
14245 | case DT_MIPS_ICHECKSUM: | |
14246 | return "MIPS_ICHECKSUM"; | |
14247 | case DT_MIPS_IVERSION: | |
14248 | return "MIPS_IVERSION"; | |
14249 | case DT_MIPS_FLAGS: | |
14250 | return "MIPS_FLAGS"; | |
14251 | case DT_MIPS_BASE_ADDRESS: | |
14252 | return "MIPS_BASE_ADDRESS"; | |
14253 | case DT_MIPS_MSYM: | |
14254 | return "MIPS_MSYM"; | |
14255 | case DT_MIPS_CONFLICT: | |
14256 | return "MIPS_CONFLICT"; | |
14257 | case DT_MIPS_LIBLIST: | |
14258 | return "MIPS_LIBLIST"; | |
14259 | case DT_MIPS_LOCAL_GOTNO: | |
14260 | return "MIPS_LOCAL_GOTNO"; | |
14261 | case DT_MIPS_CONFLICTNO: | |
14262 | return "MIPS_CONFLICTNO"; | |
14263 | case DT_MIPS_LIBLISTNO: | |
14264 | return "MIPS_LIBLISTNO"; | |
14265 | case DT_MIPS_SYMTABNO: | |
14266 | return "MIPS_SYMTABNO"; | |
14267 | case DT_MIPS_UNREFEXTNO: | |
14268 | return "MIPS_UNREFEXTNO"; | |
14269 | case DT_MIPS_GOTSYM: | |
14270 | return "MIPS_GOTSYM"; | |
14271 | case DT_MIPS_HIPAGENO: | |
14272 | return "MIPS_HIPAGENO"; | |
14273 | case DT_MIPS_RLD_MAP: | |
14274 | return "MIPS_RLD_MAP"; | |
14275 | case DT_MIPS_DELTA_CLASS: | |
14276 | return "MIPS_DELTA_CLASS"; | |
14277 | case DT_MIPS_DELTA_CLASS_NO: | |
14278 | return "MIPS_DELTA_CLASS_NO"; | |
14279 | case DT_MIPS_DELTA_INSTANCE: | |
14280 | return "MIPS_DELTA_INSTANCE"; | |
14281 | case DT_MIPS_DELTA_INSTANCE_NO: | |
14282 | return "MIPS_DELTA_INSTANCE_NO"; | |
14283 | case DT_MIPS_DELTA_RELOC: | |
14284 | return "MIPS_DELTA_RELOC"; | |
14285 | case DT_MIPS_DELTA_RELOC_NO: | |
14286 | return "MIPS_DELTA_RELOC_NO"; | |
14287 | case DT_MIPS_DELTA_SYM: | |
14288 | return "MIPS_DELTA_SYM"; | |
14289 | case DT_MIPS_DELTA_SYM_NO: | |
14290 | return "MIPS_DELTA_SYM_NO"; | |
14291 | case DT_MIPS_DELTA_CLASSSYM: | |
14292 | return "MIPS_DELTA_CLASSSYM"; | |
14293 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
14294 | return "MIPS_DELTA_CLASSSYM_NO"; | |
14295 | case DT_MIPS_CXX_FLAGS: | |
14296 | return "MIPS_CXX_FLAGS"; | |
14297 | case DT_MIPS_PIXIE_INIT: | |
14298 | return "MIPS_PIXIE_INIT"; | |
14299 | case DT_MIPS_SYMBOL_LIB: | |
14300 | return "MIPS_SYMBOL_LIB"; | |
14301 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
14302 | return "MIPS_LOCALPAGE_GOTIDX"; | |
14303 | case DT_MIPS_LOCAL_GOTIDX: | |
14304 | return "MIPS_LOCAL_GOTIDX"; | |
14305 | case DT_MIPS_HIDDEN_GOTIDX: | |
14306 | return "MIPS_HIDDEN_GOTIDX"; | |
14307 | case DT_MIPS_PROTECTED_GOTIDX: | |
14308 | return "MIPS_PROTECTED_GOT_IDX"; | |
14309 | case DT_MIPS_OPTIONS: | |
14310 | return "MIPS_OPTIONS"; | |
14311 | case DT_MIPS_INTERFACE: | |
14312 | return "MIPS_INTERFACE"; | |
14313 | case DT_MIPS_DYNSTR_ALIGN: | |
14314 | return "DT_MIPS_DYNSTR_ALIGN"; | |
14315 | case DT_MIPS_INTERFACE_SIZE: | |
14316 | return "DT_MIPS_INTERFACE_SIZE"; | |
14317 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
14318 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
14319 | case DT_MIPS_PERF_SUFFIX: | |
14320 | return "DT_MIPS_PERF_SUFFIX"; | |
14321 | case DT_MIPS_COMPACT_SIZE: | |
14322 | return "DT_MIPS_COMPACT_SIZE"; | |
14323 | case DT_MIPS_GP_VALUE: | |
14324 | return "DT_MIPS_GP_VALUE"; | |
14325 | case DT_MIPS_AUX_DYNAMIC: | |
14326 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
14327 | case DT_MIPS_PLTGOT: |
14328 | return "DT_MIPS_PLTGOT"; | |
14329 | case DT_MIPS_RWPLT: | |
14330 | return "DT_MIPS_RWPLT"; | |
ad9563d6 CM |
14331 | } |
14332 | } | |
14333 | ||
b34976b6 | 14334 | bfd_boolean |
9719ad41 | 14335 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 14336 | { |
9719ad41 | 14337 | FILE *file = ptr; |
b49e97c9 TS |
14338 | |
14339 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
14340 | ||
14341 | /* Print normal ELF private data. */ | |
14342 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
14343 | ||
14344 | /* xgettext:c-format */ | |
14345 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
14346 | ||
14347 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
14348 | fprintf (file, _(" [abi=O32]")); | |
14349 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
14350 | fprintf (file, _(" [abi=O64]")); | |
14351 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
14352 | fprintf (file, _(" [abi=EABI32]")); | |
14353 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
14354 | fprintf (file, _(" [abi=EABI64]")); | |
14355 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
14356 | fprintf (file, _(" [abi unknown]")); | |
14357 | else if (ABI_N32_P (abfd)) | |
14358 | fprintf (file, _(" [abi=N32]")); | |
14359 | else if (ABI_64_P (abfd)) | |
14360 | fprintf (file, _(" [abi=64]")); | |
14361 | else | |
14362 | fprintf (file, _(" [no abi set]")); | |
14363 | ||
14364 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 14365 | fprintf (file, " [mips1]"); |
b49e97c9 | 14366 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 14367 | fprintf (file, " [mips2]"); |
b49e97c9 | 14368 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 14369 | fprintf (file, " [mips3]"); |
b49e97c9 | 14370 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 14371 | fprintf (file, " [mips4]"); |
b49e97c9 | 14372 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 14373 | fprintf (file, " [mips5]"); |
b49e97c9 | 14374 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 14375 | fprintf (file, " [mips32]"); |
b49e97c9 | 14376 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 14377 | fprintf (file, " [mips64]"); |
af7ee8bf | 14378 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 14379 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 14380 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 14381 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
14382 | else |
14383 | fprintf (file, _(" [unknown ISA]")); | |
14384 | ||
40d32fc6 | 14385 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 14386 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
14387 | |
14388 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 14389 | fprintf (file, " [mips16]"); |
40d32fc6 | 14390 | |
df58fc94 RS |
14391 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
14392 | fprintf (file, " [micromips]"); | |
14393 | ||
b49e97c9 | 14394 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 14395 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
14396 | else |
14397 | fprintf (file, _(" [not 32bitmode]")); | |
14398 | ||
c0e3f241 | 14399 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 14400 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
14401 | |
14402 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 14403 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
14404 | |
14405 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 14406 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
14407 | |
14408 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 14409 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
14410 | |
14411 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 14412 | fprintf (file, " [UCODE]"); |
c0e3f241 | 14413 | |
b49e97c9 TS |
14414 | fputc ('\n', file); |
14415 | ||
b34976b6 | 14416 | return TRUE; |
b49e97c9 | 14417 | } |
2f89ff8d | 14418 | |
b35d266b | 14419 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 14420 | { |
0112cd26 NC |
14421 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
14422 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14423 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
14424 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14425 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
14426 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
14427 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 14428 | }; |
5e2b0d47 | 14429 | |
8992f0d7 TS |
14430 | /* Merge non visibility st_other attributes. Ensure that the |
14431 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
14432 | definiton of the symbol. */ | |
5e2b0d47 NC |
14433 | void |
14434 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
14435 | const Elf_Internal_Sym *isym, | |
14436 | bfd_boolean definition, | |
14437 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
14438 | { | |
8992f0d7 TS |
14439 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
14440 | { | |
14441 | unsigned char other; | |
14442 | ||
14443 | other = (definition ? isym->st_other : h->other); | |
14444 | other &= ~ELF_ST_VISIBILITY (-1); | |
14445 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
14446 | } | |
14447 | ||
14448 | if (!definition | |
5e2b0d47 NC |
14449 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
14450 | h->other |= STO_OPTIONAL; | |
14451 | } | |
12ac1cf5 NC |
14452 | |
14453 | /* Decide whether an undefined symbol is special and can be ignored. | |
14454 | This is the case for OPTIONAL symbols on IRIX. */ | |
14455 | bfd_boolean | |
14456 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
14457 | { | |
14458 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
14459 | } | |
e0764319 NC |
14460 | |
14461 | bfd_boolean | |
14462 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
14463 | { | |
14464 | return (sym->st_shndx == SHN_COMMON | |
14465 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
14466 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
14467 | } | |
861fb55a DJ |
14468 | |
14469 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
14470 | or (bfd_vma) -1 if it should not be included. */ | |
14471 | ||
14472 | bfd_vma | |
14473 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
14474 | const arelent *rel ATTRIBUTE_UNUSED) | |
14475 | { | |
14476 | return (plt->vma | |
14477 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
14478 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
14479 | } | |
14480 | ||
14481 | void | |
14482 | _bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) | |
14483 | { | |
14484 | struct mips_elf_link_hash_table *htab; | |
14485 | Elf_Internal_Ehdr *i_ehdrp; | |
14486 | ||
14487 | i_ehdrp = elf_elfheader (abfd); | |
14488 | if (link_info) | |
14489 | { | |
14490 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 NC |
14491 | BFD_ASSERT (htab != NULL); |
14492 | ||
861fb55a DJ |
14493 | if (htab->use_plts_and_copy_relocs && !htab->is_vxworks) |
14494 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
14495 | } | |
14496 | } |