Commit | Line | Data |
---|---|---|
b49e97c9 | 1 | /* MIPS-specific support for ELF |
64543e1a | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
6f179bd0 | 3 | 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
b49e97c9 TS |
4 | |
5 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
6 | <ian@cygnus.com>. | |
7 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. | |
8 | <mark@codesourcery.com> | |
9 | Traditional MIPS targets support added by Koundinya.K, Dansk Data | |
10 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
11 | ||
ae9a127f | 12 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 13 | |
ae9a127f NC |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 16 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 17 | (at your option) any later version. |
b49e97c9 | 18 | |
ae9a127f NC |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
b49e97c9 | 23 | |
ae9a127f NC |
24 | You should have received a copy of the GNU General Public License |
25 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
26 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
27 | MA 02110-1301, USA. */ | |
28 | ||
b49e97c9 TS |
29 | |
30 | /* This file handles functionality common to the different MIPS ABI's. */ | |
31 | ||
b49e97c9 | 32 | #include "sysdep.h" |
3db64b00 | 33 | #include "bfd.h" |
b49e97c9 | 34 | #include "libbfd.h" |
64543e1a | 35 | #include "libiberty.h" |
b49e97c9 TS |
36 | #include "elf-bfd.h" |
37 | #include "elfxx-mips.h" | |
38 | #include "elf/mips.h" | |
0a44bf69 | 39 | #include "elf-vxworks.h" |
b49e97c9 TS |
40 | |
41 | /* Get the ECOFF swapping routines. */ | |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/mips.h" | |
46 | ||
b15e6682 AO |
47 | #include "hashtab.h" |
48 | ||
ead49a57 RS |
49 | /* This structure is used to hold information about one GOT entry. |
50 | There are three types of entry: | |
51 | ||
52 | (1) absolute addresses | |
53 | (abfd == NULL) | |
54 | (2) SYMBOL + OFFSET addresses, where SYMBOL is local to an input bfd | |
55 | (abfd != NULL, symndx >= 0) | |
56 | (3) global and forced-local symbols | |
57 | (abfd != NULL, symndx == -1) | |
58 | ||
59 | Type (3) entries are treated differently for different types of GOT. | |
60 | In the "master" GOT -- i.e. the one that describes every GOT | |
61 | reference needed in the link -- the mips_got_entry is keyed on both | |
62 | the symbol and the input bfd that references it. If it turns out | |
63 | that we need multiple GOTs, we can then use this information to | |
64 | create separate GOTs for each input bfd. | |
65 | ||
66 | However, we want each of these separate GOTs to have at most one | |
67 | entry for a given symbol, so their type (3) entries are keyed only | |
68 | on the symbol. The input bfd given by the "abfd" field is somewhat | |
69 | arbitrary in this case. | |
70 | ||
71 | This means that when there are multiple GOTs, each GOT has a unique | |
72 | mips_got_entry for every symbol within it. We can therefore use the | |
73 | mips_got_entry fields (tls_type and gotidx) to track the symbol's | |
74 | GOT index. | |
75 | ||
76 | However, if it turns out that we need only a single GOT, we continue | |
77 | to use the master GOT to describe it. There may therefore be several | |
78 | mips_got_entries for the same symbol, each with a different input bfd. | |
79 | We want to make sure that each symbol gets a unique GOT entry, so when | |
80 | there's a single GOT, we use the symbol's hash entry, not the | |
81 | mips_got_entry fields, to track a symbol's GOT index. */ | |
b15e6682 AO |
82 | struct mips_got_entry |
83 | { | |
84 | /* The input bfd in which the symbol is defined. */ | |
85 | bfd *abfd; | |
f4416af6 AO |
86 | /* The index of the symbol, as stored in the relocation r_info, if |
87 | we have a local symbol; -1 otherwise. */ | |
88 | long symndx; | |
89 | union | |
90 | { | |
91 | /* If abfd == NULL, an address that must be stored in the got. */ | |
92 | bfd_vma address; | |
93 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
94 | that should be added to the symbol value. */ | |
95 | bfd_vma addend; | |
96 | /* If abfd != NULL && symndx == -1, the hash table entry | |
97 | corresponding to a global symbol in the got (or, local, if | |
98 | h->forced_local). */ | |
99 | struct mips_elf_link_hash_entry *h; | |
100 | } d; | |
0f20cc35 DJ |
101 | |
102 | /* The TLS types included in this GOT entry (specifically, GD and | |
103 | IE). The GD and IE flags can be added as we encounter new | |
104 | relocations. LDM can also be set; it will always be alone, not | |
105 | combined with any GD or IE flags. An LDM GOT entry will be | |
106 | a local symbol entry with r_symndx == 0. */ | |
107 | unsigned char tls_type; | |
108 | ||
b15e6682 | 109 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
110 | corresponding to this symbol+addend. If it's a global symbol |
111 | whose offset is yet to be decided, it's going to be -1. */ | |
112 | long gotidx; | |
b15e6682 AO |
113 | }; |
114 | ||
c224138d RS |
115 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
116 | The structures form a non-overlapping list that is sorted by increasing | |
117 | MIN_ADDEND. */ | |
118 | struct mips_got_page_range | |
119 | { | |
120 | struct mips_got_page_range *next; | |
121 | bfd_signed_vma min_addend; | |
122 | bfd_signed_vma max_addend; | |
123 | }; | |
124 | ||
125 | /* This structure describes the range of addends that are applied to page | |
126 | relocations against a given symbol. */ | |
127 | struct mips_got_page_entry | |
128 | { | |
129 | /* The input bfd in which the symbol is defined. */ | |
130 | bfd *abfd; | |
131 | /* The index of the symbol, as stored in the relocation r_info. */ | |
132 | long symndx; | |
133 | /* The ranges for this page entry. */ | |
134 | struct mips_got_page_range *ranges; | |
135 | /* The maximum number of page entries needed for RANGES. */ | |
136 | bfd_vma num_pages; | |
137 | }; | |
138 | ||
f0abc2a1 | 139 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
140 | |
141 | struct mips_got_info | |
142 | { | |
143 | /* The global symbol in the GOT with the lowest index in the dynamic | |
144 | symbol table. */ | |
145 | struct elf_link_hash_entry *global_gotsym; | |
146 | /* The number of global .got entries. */ | |
147 | unsigned int global_gotno; | |
0f20cc35 DJ |
148 | /* The number of .got slots used for TLS. */ |
149 | unsigned int tls_gotno; | |
150 | /* The first unused TLS .got entry. Used only during | |
151 | mips_elf_initialize_tls_index. */ | |
152 | unsigned int tls_assigned_gotno; | |
c224138d | 153 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 154 | unsigned int local_gotno; |
c224138d RS |
155 | /* The maximum number of page entries needed. */ |
156 | unsigned int page_gotno; | |
b49e97c9 TS |
157 | /* The number of local .got entries we have used. */ |
158 | unsigned int assigned_gotno; | |
b15e6682 AO |
159 | /* A hash table holding members of the got. */ |
160 | struct htab *got_entries; | |
c224138d RS |
161 | /* A hash table of mips_got_page_entry structures. */ |
162 | struct htab *got_page_entries; | |
f4416af6 AO |
163 | /* A hash table mapping input bfds to other mips_got_info. NULL |
164 | unless multi-got was necessary. */ | |
165 | struct htab *bfd2got; | |
166 | /* In multi-got links, a pointer to the next got (err, rather, most | |
167 | of the time, it points to the previous got). */ | |
168 | struct mips_got_info *next; | |
0f20cc35 DJ |
169 | /* This is the GOT index of the TLS LDM entry for the GOT, MINUS_ONE |
170 | for none, or MINUS_TWO for not yet assigned. This is needed | |
171 | because a single-GOT link may have multiple hash table entries | |
172 | for the LDM. It does not get initialized in multi-GOT mode. */ | |
173 | bfd_vma tls_ldm_offset; | |
f4416af6 AO |
174 | }; |
175 | ||
176 | /* Map an input bfd to a got in a multi-got link. */ | |
177 | ||
178 | struct mips_elf_bfd2got_hash { | |
179 | bfd *bfd; | |
180 | struct mips_got_info *g; | |
181 | }; | |
182 | ||
183 | /* Structure passed when traversing the bfd2got hash table, used to | |
184 | create and merge bfd's gots. */ | |
185 | ||
186 | struct mips_elf_got_per_bfd_arg | |
187 | { | |
188 | /* A hashtable that maps bfds to gots. */ | |
189 | htab_t bfd2got; | |
190 | /* The output bfd. */ | |
191 | bfd *obfd; | |
192 | /* The link information. */ | |
193 | struct bfd_link_info *info; | |
194 | /* A pointer to the primary got, i.e., the one that's going to get | |
195 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
196 | DT_MIPS_GOTSYM. */ | |
197 | struct mips_got_info *primary; | |
198 | /* A non-primary got we're trying to merge with other input bfd's | |
199 | gots. */ | |
200 | struct mips_got_info *current; | |
201 | /* The maximum number of got entries that can be addressed with a | |
202 | 16-bit offset. */ | |
203 | unsigned int max_count; | |
c224138d RS |
204 | /* The maximum number of page entries needed by each got. */ |
205 | unsigned int max_pages; | |
0f20cc35 DJ |
206 | /* The total number of global entries which will live in the |
207 | primary got and be automatically relocated. This includes | |
208 | those not referenced by the primary GOT but included in | |
209 | the "master" GOT. */ | |
210 | unsigned int global_count; | |
f4416af6 AO |
211 | }; |
212 | ||
213 | /* Another structure used to pass arguments for got entries traversal. */ | |
214 | ||
215 | struct mips_elf_set_global_got_offset_arg | |
216 | { | |
217 | struct mips_got_info *g; | |
218 | int value; | |
219 | unsigned int needed_relocs; | |
220 | struct bfd_link_info *info; | |
b49e97c9 TS |
221 | }; |
222 | ||
0f20cc35 DJ |
223 | /* A structure used to count TLS relocations or GOT entries, for GOT |
224 | entry or ELF symbol table traversal. */ | |
225 | ||
226 | struct mips_elf_count_tls_arg | |
227 | { | |
228 | struct bfd_link_info *info; | |
229 | unsigned int needed; | |
230 | }; | |
231 | ||
f0abc2a1 AM |
232 | struct _mips_elf_section_data |
233 | { | |
234 | struct bfd_elf_section_data elf; | |
235 | union | |
236 | { | |
237 | struct mips_got_info *got_info; | |
238 | bfd_byte *tdata; | |
239 | } u; | |
240 | }; | |
241 | ||
242 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 243 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 244 | |
b49e97c9 TS |
245 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
246 | the dynamic symbols. */ | |
247 | ||
248 | struct mips_elf_hash_sort_data | |
249 | { | |
250 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
251 | index. */ | |
252 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
253 | /* The least dynamic symbol table index corresponding to a non-TLS |
254 | symbol with a GOT entry. */ | |
b49e97c9 | 255 | long min_got_dynindx; |
f4416af6 AO |
256 | /* The greatest dynamic symbol table index corresponding to a symbol |
257 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 258 | with dynamic relocations pointing to it from non-primary GOTs). */ |
f4416af6 | 259 | long max_unref_got_dynindx; |
b49e97c9 TS |
260 | /* The greatest dynamic symbol table index not corresponding to a |
261 | symbol without a GOT entry. */ | |
262 | long max_non_got_dynindx; | |
263 | }; | |
264 | ||
265 | /* The MIPS ELF linker needs additional information for each symbol in | |
266 | the global hash table. */ | |
267 | ||
268 | struct mips_elf_link_hash_entry | |
269 | { | |
270 | struct elf_link_hash_entry root; | |
271 | ||
272 | /* External symbol information. */ | |
273 | EXTR esym; | |
274 | ||
275 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against | |
276 | this symbol. */ | |
277 | unsigned int possibly_dynamic_relocs; | |
278 | ||
279 | /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against | |
280 | a readonly section. */ | |
b34976b6 | 281 | bfd_boolean readonly_reloc; |
b49e97c9 | 282 | |
b49e97c9 TS |
283 | /* We must not create a stub for a symbol that has relocations |
284 | related to taking the function's address, i.e. any but | |
285 | R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition", | |
286 | p. 4-20. */ | |
b34976b6 | 287 | bfd_boolean no_fn_stub; |
b49e97c9 TS |
288 | |
289 | /* If there is a stub that 32 bit functions should use to call this | |
290 | 16 bit function, this points to the section containing the stub. */ | |
291 | asection *fn_stub; | |
292 | ||
293 | /* Whether we need the fn_stub; this is set if this symbol appears | |
294 | in any relocs other than a 16 bit call. */ | |
b34976b6 | 295 | bfd_boolean need_fn_stub; |
b49e97c9 TS |
296 | |
297 | /* If there is a stub that 16 bit functions should use to call this | |
298 | 32 bit function, this points to the section containing the stub. */ | |
299 | asection *call_stub; | |
300 | ||
301 | /* This is like the call_stub field, but it is used if the function | |
302 | being called returns a floating point value. */ | |
303 | asection *call_fp_stub; | |
7c5fcef7 | 304 | |
a008ac03 DJ |
305 | /* Are we forced local? This will only be set if we have converted |
306 | the initial global GOT entry to a local GOT entry. */ | |
b34976b6 | 307 | bfd_boolean forced_local; |
0f20cc35 | 308 | |
0a44bf69 RS |
309 | /* Are we referenced by some kind of relocation? */ |
310 | bfd_boolean is_relocation_target; | |
311 | ||
312 | /* Are we referenced by branch relocations? */ | |
313 | bfd_boolean is_branch_target; | |
314 | ||
0f20cc35 DJ |
315 | #define GOT_NORMAL 0 |
316 | #define GOT_TLS_GD 1 | |
317 | #define GOT_TLS_LDM 2 | |
318 | #define GOT_TLS_IE 4 | |
319 | #define GOT_TLS_OFFSET_DONE 0x40 | |
320 | #define GOT_TLS_DONE 0x80 | |
321 | unsigned char tls_type; | |
322 | /* This is only used in single-GOT mode; in multi-GOT mode there | |
323 | is one mips_got_entry per GOT entry, so the offset is stored | |
324 | there. In single-GOT mode there may be many mips_got_entry | |
325 | structures all referring to the same GOT slot. It might be | |
326 | possible to use root.got.offset instead, but that field is | |
327 | overloaded already. */ | |
328 | bfd_vma tls_got_offset; | |
b49e97c9 TS |
329 | }; |
330 | ||
331 | /* MIPS ELF linker hash table. */ | |
332 | ||
333 | struct mips_elf_link_hash_table | |
334 | { | |
335 | struct elf_link_hash_table root; | |
336 | #if 0 | |
337 | /* We no longer use this. */ | |
338 | /* String section indices for the dynamic section symbols. */ | |
339 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
340 | #endif | |
341 | /* The number of .rtproc entries. */ | |
342 | bfd_size_type procedure_count; | |
343 | /* The size of the .compact_rel section (if SGI_COMPAT). */ | |
344 | bfd_size_type compact_rel_size; | |
345 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic | |
8dc1a139 | 346 | entry is set to the address of __rld_obj_head as in IRIX5. */ |
b34976b6 | 347 | bfd_boolean use_rld_obj_head; |
b49e97c9 TS |
348 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ |
349 | bfd_vma rld_value; | |
350 | /* This is set if we see any mips16 stub sections. */ | |
b34976b6 | 351 | bfd_boolean mips16_stubs_seen; |
8275b357 RS |
352 | /* True if we've computed the size of the GOT. */ |
353 | bfd_boolean computed_got_sizes; | |
0a44bf69 RS |
354 | /* True if we're generating code for VxWorks. */ |
355 | bfd_boolean is_vxworks; | |
0e53d9da AN |
356 | /* True if we already reported the small-data section overflow. */ |
357 | bfd_boolean small_data_overflow_reported; | |
0a44bf69 RS |
358 | /* Shortcuts to some dynamic sections, or NULL if they are not |
359 | being used. */ | |
360 | asection *srelbss; | |
361 | asection *sdynbss; | |
362 | asection *srelplt; | |
363 | asection *srelplt2; | |
364 | asection *sgotplt; | |
365 | asection *splt; | |
4e41d0d7 | 366 | asection *sstubs; |
0a44bf69 RS |
367 | /* The size of the PLT header in bytes (VxWorks only). */ |
368 | bfd_vma plt_header_size; | |
369 | /* The size of a PLT entry in bytes (VxWorks only). */ | |
370 | bfd_vma plt_entry_size; | |
5108fc1b RS |
371 | /* The size of a function stub entry in bytes. */ |
372 | bfd_vma function_stub_size; | |
b49e97c9 TS |
373 | }; |
374 | ||
0f20cc35 DJ |
375 | #define TLS_RELOC_P(r_type) \ |
376 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
377 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
378 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
379 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
380 | || r_type == R_MIPS_TLS_GD \ | |
381 | || r_type == R_MIPS_TLS_LDM \ | |
382 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
383 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
384 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
385 | || r_type == R_MIPS_TLS_TPREL32 \ | |
386 | || r_type == R_MIPS_TLS_TPREL64 \ | |
387 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
388 | || r_type == R_MIPS_TLS_TPREL_LO16) | |
389 | ||
b49e97c9 TS |
390 | /* Structure used to pass information to mips_elf_output_extsym. */ |
391 | ||
392 | struct extsym_info | |
393 | { | |
9e4aeb93 RS |
394 | bfd *abfd; |
395 | struct bfd_link_info *info; | |
b49e97c9 TS |
396 | struct ecoff_debug_info *debug; |
397 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 398 | bfd_boolean failed; |
b49e97c9 TS |
399 | }; |
400 | ||
8dc1a139 | 401 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
402 | |
403 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
404 | { | |
405 | "_procedure_table", | |
406 | "_procedure_string_table", | |
407 | "_procedure_table_size", | |
408 | NULL | |
409 | }; | |
410 | ||
411 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 412 | IRIX5. */ |
b49e97c9 TS |
413 | |
414 | typedef struct | |
415 | { | |
416 | unsigned long id1; /* Always one? */ | |
417 | unsigned long num; /* Number of compact relocation entries. */ | |
418 | unsigned long id2; /* Always two? */ | |
419 | unsigned long offset; /* The file offset of the first relocation. */ | |
420 | unsigned long reserved0; /* Zero? */ | |
421 | unsigned long reserved1; /* Zero? */ | |
422 | } Elf32_compact_rel; | |
423 | ||
424 | typedef struct | |
425 | { | |
426 | bfd_byte id1[4]; | |
427 | bfd_byte num[4]; | |
428 | bfd_byte id2[4]; | |
429 | bfd_byte offset[4]; | |
430 | bfd_byte reserved0[4]; | |
431 | bfd_byte reserved1[4]; | |
432 | } Elf32_External_compact_rel; | |
433 | ||
434 | typedef struct | |
435 | { | |
436 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
437 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
438 | unsigned int dist2to : 8; | |
439 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
440 | unsigned long konst; /* KONST field. See below. */ | |
441 | unsigned long vaddr; /* VADDR to be relocated. */ | |
442 | } Elf32_crinfo; | |
443 | ||
444 | typedef struct | |
445 | { | |
446 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
447 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
448 | unsigned int dist2to : 8; | |
449 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
450 | unsigned long konst; /* KONST field. See below. */ | |
451 | } Elf32_crinfo2; | |
452 | ||
453 | typedef struct | |
454 | { | |
455 | bfd_byte info[4]; | |
456 | bfd_byte konst[4]; | |
457 | bfd_byte vaddr[4]; | |
458 | } Elf32_External_crinfo; | |
459 | ||
460 | typedef struct | |
461 | { | |
462 | bfd_byte info[4]; | |
463 | bfd_byte konst[4]; | |
464 | } Elf32_External_crinfo2; | |
465 | ||
466 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
467 | ||
468 | #define CRINFO_CTYPE (0x1) | |
469 | #define CRINFO_CTYPE_SH (31) | |
470 | #define CRINFO_RTYPE (0xf) | |
471 | #define CRINFO_RTYPE_SH (27) | |
472 | #define CRINFO_DIST2TO (0xff) | |
473 | #define CRINFO_DIST2TO_SH (19) | |
474 | #define CRINFO_RELVADDR (0x7ffff) | |
475 | #define CRINFO_RELVADDR_SH (0) | |
476 | ||
477 | /* A compact relocation info has long (3 words) or short (2 words) | |
478 | formats. A short format doesn't have VADDR field and relvaddr | |
479 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
480 | #define CRF_MIPS_LONG 1 | |
481 | #define CRF_MIPS_SHORT 0 | |
482 | ||
483 | /* There are 4 types of compact relocation at least. The value KONST | |
484 | has different meaning for each type: | |
485 | ||
486 | (type) (konst) | |
487 | CT_MIPS_REL32 Address in data | |
488 | CT_MIPS_WORD Address in word (XXX) | |
489 | CT_MIPS_GPHI_LO GP - vaddr | |
490 | CT_MIPS_JMPAD Address to jump | |
491 | */ | |
492 | ||
493 | #define CRT_MIPS_REL32 0xa | |
494 | #define CRT_MIPS_WORD 0xb | |
495 | #define CRT_MIPS_GPHI_LO 0xc | |
496 | #define CRT_MIPS_JMPAD 0xd | |
497 | ||
498 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
499 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
500 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
501 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
502 | \f | |
503 | /* The structure of the runtime procedure descriptor created by the | |
504 | loader for use by the static exception system. */ | |
505 | ||
506 | typedef struct runtime_pdr { | |
ae9a127f NC |
507 | bfd_vma adr; /* Memory address of start of procedure. */ |
508 | long regmask; /* Save register mask. */ | |
509 | long regoffset; /* Save register offset. */ | |
510 | long fregmask; /* Save floating point register mask. */ | |
511 | long fregoffset; /* Save floating point register offset. */ | |
512 | long frameoffset; /* Frame size. */ | |
513 | short framereg; /* Frame pointer register. */ | |
514 | short pcreg; /* Offset or reg of return pc. */ | |
515 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 516 | long reserved; |
ae9a127f | 517 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
518 | } RPDR, *pRPDR; |
519 | #define cbRPDR sizeof (RPDR) | |
520 | #define rpdNil ((pRPDR) 0) | |
521 | \f | |
b15e6682 | 522 | static struct mips_got_entry *mips_elf_create_local_got_entry |
0a44bf69 | 523 | (bfd *, struct bfd_link_info *, bfd *, struct mips_got_info *, asection *, |
5c18022e | 524 | bfd_vma, unsigned long, struct mips_elf_link_hash_entry *, int); |
b34976b6 | 525 | static bfd_boolean mips_elf_sort_hash_table_f |
9719ad41 | 526 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
527 | static bfd_vma mips_elf_high |
528 | (bfd_vma); | |
b34976b6 | 529 | static bfd_boolean mips_elf_create_dynamic_relocation |
9719ad41 RS |
530 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
531 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
532 | bfd_vma *, asection *); | |
9719ad41 RS |
533 | static hashval_t mips_elf_got_entry_hash |
534 | (const void *); | |
f4416af6 | 535 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 536 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 537 | static struct mips_got_info *mips_elf_got_for_ibfd |
9719ad41 | 538 | (struct mips_got_info *, bfd *); |
f4416af6 | 539 | |
b49e97c9 TS |
540 | /* This will be used when we sort the dynamic relocation records. */ |
541 | static bfd *reldyn_sorting_bfd; | |
542 | ||
543 | /* Nonzero if ABFD is using the N32 ABI. */ | |
b49e97c9 TS |
544 | #define ABI_N32_P(abfd) \ |
545 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
546 | ||
4a14403c | 547 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 548 | #define ABI_64_P(abfd) \ |
141ff970 | 549 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 550 | |
4a14403c TS |
551 | /* Nonzero if ABFD is using NewABI conventions. */ |
552 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
553 | ||
554 | /* The IRIX compatibility level we are striving for. */ | |
b49e97c9 TS |
555 | #define IRIX_COMPAT(abfd) \ |
556 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
557 | ||
b49e97c9 TS |
558 | /* Whether we are trying to be compatible with IRIX at all. */ |
559 | #define SGI_COMPAT(abfd) \ | |
560 | (IRIX_COMPAT (abfd) != ict_none) | |
561 | ||
562 | /* The name of the options section. */ | |
563 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 564 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 565 | |
cc2e31b9 RS |
566 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
567 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
568 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
569 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
570 | ||
943284cc DJ |
571 | /* Whether the section is readonly. */ |
572 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
573 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
574 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
575 | ||
b49e97c9 | 576 | /* The name of the stub section. */ |
ca07892d | 577 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
578 | |
579 | /* The size of an external REL relocation. */ | |
580 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
581 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
582 | ||
0a44bf69 RS |
583 | /* The size of an external RELA relocation. */ |
584 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
585 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
586 | ||
b49e97c9 TS |
587 | /* The size of an external dynamic table entry. */ |
588 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
589 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
590 | ||
591 | /* The size of a GOT entry. */ | |
592 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
593 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
594 | ||
595 | /* The size of a symbol-table entry. */ | |
596 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
597 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
598 | ||
599 | /* The default alignment for sections, as a power of two. */ | |
600 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 601 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
602 | |
603 | /* Get word-sized data. */ | |
604 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
605 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
606 | ||
607 | /* Put out word-sized data. */ | |
608 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
609 | (ABI_64_P (abfd) \ | |
610 | ? bfd_put_64 (abfd, val, ptr) \ | |
611 | : bfd_put_32 (abfd, val, ptr)) | |
612 | ||
613 | /* Add a dynamic symbol table-entry. */ | |
9719ad41 | 614 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 615 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
616 | |
617 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
618 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela)) | |
619 | ||
4ffba85c AO |
620 | /* Determine whether the internal relocation of index REL_IDX is REL |
621 | (zero) or RELA (non-zero). The assumption is that, if there are | |
622 | two relocation sections for this section, one of them is REL and | |
623 | the other is RELA. If the index of the relocation we're testing is | |
624 | in range for the first relocation section, check that the external | |
625 | relocation size is that for RELA. It is also assumed that, if | |
626 | rel_idx is not in range for the first section, and this first | |
627 | section contains REL relocs, then the relocation is in the second | |
628 | section, that is RELA. */ | |
629 | #define MIPS_RELOC_RELA_P(abfd, sec, rel_idx) \ | |
630 | ((NUM_SHDR_ENTRIES (&elf_section_data (sec)->rel_hdr) \ | |
631 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel \ | |
632 | > (bfd_vma)(rel_idx)) \ | |
633 | == (elf_section_data (sec)->rel_hdr.sh_entsize \ | |
634 | == (ABI_64_P (abfd) ? sizeof (Elf64_External_Rela) \ | |
635 | : sizeof (Elf32_External_Rela)))) | |
636 | ||
0a44bf69 RS |
637 | /* The name of the dynamic relocation section. */ |
638 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
639 | (mips_elf_hash_table (INFO)->is_vxworks ? ".rela.dyn" : ".rel.dyn") | |
640 | ||
b49e97c9 TS |
641 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
642 | from smaller values. Start with zero, widen, *then* decrement. */ | |
643 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 644 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 TS |
645 | |
646 | /* The number of local .got entries we reserve. */ | |
0a44bf69 RS |
647 | #define MIPS_RESERVED_GOTNO(INFO) \ |
648 | (mips_elf_hash_table (INFO)->is_vxworks ? 3 : 2) | |
b49e97c9 | 649 | |
51e38d68 RS |
650 | /* The value to write into got[1] for SVR4 targets, to identify it is |
651 | a GNU object. The dynamic linker can then use got[1] to store the | |
652 | module pointer. */ | |
653 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
654 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
655 | ||
f4416af6 | 656 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 RS |
657 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
658 | (mips_elf_hash_table (INFO)->is_vxworks ? 0x0 : 0x7ff0) | |
f4416af6 AO |
659 | |
660 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
661 | offsets from $gp. */ | |
0a44bf69 | 662 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 663 | |
6a691779 | 664 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
665 | #define STUB_LW(abfd) \ |
666 | ((ABI_64_P (abfd) \ | |
667 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
668 | : 0x8f998010)) /* lw t9,0x8010(gp) */ | |
669 | #define STUB_MOVE(abfd) \ | |
670 | ((ABI_64_P (abfd) \ | |
671 | ? 0x03e0782d /* daddu t7,ra */ \ | |
672 | : 0x03e07821)) /* addu t7,ra */ | |
673 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ | |
674 | #define STUB_JALR 0x0320f809 /* jalr t9,ra */ | |
5108fc1b RS |
675 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
676 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
677 | #define STUB_LI16S(abfd, VAL) \ |
678 | ((ABI_64_P (abfd) \ | |
679 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
680 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
681 | ||
5108fc1b RS |
682 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
683 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
684 | |
685 | /* The name of the dynamic interpreter. This is put in the .interp | |
686 | section. */ | |
687 | ||
688 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ | |
689 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
690 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
691 | : "/usr/lib/libc.so.1") | |
692 | ||
693 | #ifdef BFD64 | |
ee6423ed AO |
694 | #define MNAME(bfd,pre,pos) \ |
695 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
696 | #define ELF_R_SYM(bfd, i) \ |
697 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
698 | #define ELF_R_TYPE(bfd, i) \ | |
699 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
700 | #define ELF_R_INFO(bfd, s, t) \ | |
701 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
702 | #else | |
ee6423ed | 703 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
704 | #define ELF_R_SYM(bfd, i) \ |
705 | (ELF32_R_SYM (i)) | |
706 | #define ELF_R_TYPE(bfd, i) \ | |
707 | (ELF32_R_TYPE (i)) | |
708 | #define ELF_R_INFO(bfd, s, t) \ | |
709 | (ELF32_R_INFO (s, t)) | |
710 | #endif | |
711 | \f | |
712 | /* The mips16 compiler uses a couple of special sections to handle | |
713 | floating point arguments. | |
714 | ||
715 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
716 | copy floating point arguments from the fp regs to the gp regs and | |
717 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
718 | call should be redirected to the stub instead. If no 32 bit | |
719 | function calls FNNAME, the stub should be discarded. We need to | |
720 | consider any reference to the function, not just a call, because | |
721 | if the address of the function is taken we will need the stub, | |
722 | since the address might be passed to a 32 bit function. | |
723 | ||
724 | Section names that look like .mips16.call.FNNAME contain stubs | |
725 | that copy floating point arguments from the gp regs to the fp | |
726 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
727 | then any 16 bit function that calls FNNAME should be redirected | |
728 | to the stub instead. If FNNAME is not a 32 bit function, the | |
729 | stub should be discarded. | |
730 | ||
731 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
732 | which call FNNAME and then copy the return value from the fp regs | |
733 | to the gp regs. These stubs store the return value in $18 while | |
734 | calling FNNAME; any function which might call one of these stubs | |
735 | must arrange to save $18 around the call. (This case is not | |
736 | needed for 32 bit functions that call 16 bit functions, because | |
737 | 16 bit functions always return floating point values in both | |
738 | $f0/$f1 and $2/$3.) | |
739 | ||
740 | Note that in all cases FNNAME might be defined statically. | |
741 | Therefore, FNNAME is not used literally. Instead, the relocation | |
742 | information will indicate which symbol the section is for. | |
743 | ||
744 | We record any stubs that we find in the symbol table. */ | |
745 | ||
746 | #define FN_STUB ".mips16.fn." | |
747 | #define CALL_STUB ".mips16.call." | |
748 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 TS |
749 | |
750 | #define FN_STUB_P(name) CONST_STRNEQ (name, FN_STUB) | |
751 | #define CALL_STUB_P(name) CONST_STRNEQ (name, CALL_STUB) | |
752 | #define CALL_FP_STUB_P(name) CONST_STRNEQ (name, CALL_FP_STUB) | |
b49e97c9 | 753 | \f |
0a44bf69 RS |
754 | /* The format of the first PLT entry in a VxWorks executable. */ |
755 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = { | |
756 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ | |
757 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
758 | 0x8f390008, /* lw t9, 8(t9) */ | |
759 | 0x00000000, /* nop */ | |
760 | 0x03200008, /* jr t9 */ | |
761 | 0x00000000 /* nop */ | |
762 | }; | |
763 | ||
764 | /* The format of subsequent PLT entries. */ | |
765 | static const bfd_vma mips_vxworks_exec_plt_entry[] = { | |
766 | 0x10000000, /* b .PLT_resolver */ | |
767 | 0x24180000, /* li t8, <pltindex> */ | |
768 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
769 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
770 | 0x8f390000, /* lw t9, 0(t9) */ | |
771 | 0x00000000, /* nop */ | |
772 | 0x03200008, /* jr t9 */ | |
773 | 0x00000000 /* nop */ | |
774 | }; | |
775 | ||
776 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
777 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = { | |
778 | 0x8f990008, /* lw t9, 8(gp) */ | |
779 | 0x00000000, /* nop */ | |
780 | 0x03200008, /* jr t9 */ | |
781 | 0x00000000, /* nop */ | |
782 | 0x00000000, /* nop */ | |
783 | 0x00000000 /* nop */ | |
784 | }; | |
785 | ||
786 | /* The format of subsequent PLT entries. */ | |
787 | static const bfd_vma mips_vxworks_shared_plt_entry[] = { | |
788 | 0x10000000, /* b .PLT_resolver */ | |
789 | 0x24180000 /* li t8, <pltindex> */ | |
790 | }; | |
791 | \f | |
b49e97c9 TS |
792 | /* Look up an entry in a MIPS ELF linker hash table. */ |
793 | ||
794 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
795 | ((struct mips_elf_link_hash_entry *) \ | |
796 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
797 | (copy), (follow))) | |
798 | ||
799 | /* Traverse a MIPS ELF linker hash table. */ | |
800 | ||
801 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
802 | (elf_link_hash_traverse \ | |
803 | (&(table)->root, \ | |
9719ad41 | 804 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
805 | (info))) |
806 | ||
807 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
808 | ||
809 | #define mips_elf_hash_table(p) \ | |
810 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
811 | ||
0f20cc35 DJ |
812 | /* Find the base offsets for thread-local storage in this object, |
813 | for GD/LD and IE/LE respectively. */ | |
814 | ||
815 | #define TP_OFFSET 0x7000 | |
816 | #define DTP_OFFSET 0x8000 | |
817 | ||
818 | static bfd_vma | |
819 | dtprel_base (struct bfd_link_info *info) | |
820 | { | |
821 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
822 | if (elf_hash_table (info)->tls_sec == NULL) | |
823 | return 0; | |
824 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
825 | } | |
826 | ||
827 | static bfd_vma | |
828 | tprel_base (struct bfd_link_info *info) | |
829 | { | |
830 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
831 | if (elf_hash_table (info)->tls_sec == NULL) | |
832 | return 0; | |
833 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
834 | } | |
835 | ||
b49e97c9 TS |
836 | /* Create an entry in a MIPS ELF linker hash table. */ |
837 | ||
838 | static struct bfd_hash_entry * | |
9719ad41 RS |
839 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
840 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
841 | { |
842 | struct mips_elf_link_hash_entry *ret = | |
843 | (struct mips_elf_link_hash_entry *) entry; | |
844 | ||
845 | /* Allocate the structure if it has not already been allocated by a | |
846 | subclass. */ | |
9719ad41 RS |
847 | if (ret == NULL) |
848 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
849 | if (ret == NULL) | |
b49e97c9 TS |
850 | return (struct bfd_hash_entry *) ret; |
851 | ||
852 | /* Call the allocation method of the superclass. */ | |
853 | ret = ((struct mips_elf_link_hash_entry *) | |
854 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
855 | table, string)); | |
9719ad41 | 856 | if (ret != NULL) |
b49e97c9 TS |
857 | { |
858 | /* Set local fields. */ | |
859 | memset (&ret->esym, 0, sizeof (EXTR)); | |
860 | /* We use -2 as a marker to indicate that the information has | |
861 | not been set. -1 means there is no associated ifd. */ | |
862 | ret->esym.ifd = -2; | |
863 | ret->possibly_dynamic_relocs = 0; | |
b34976b6 | 864 | ret->readonly_reloc = FALSE; |
b34976b6 | 865 | ret->no_fn_stub = FALSE; |
b49e97c9 | 866 | ret->fn_stub = NULL; |
b34976b6 | 867 | ret->need_fn_stub = FALSE; |
b49e97c9 TS |
868 | ret->call_stub = NULL; |
869 | ret->call_fp_stub = NULL; | |
b34976b6 | 870 | ret->forced_local = FALSE; |
0a44bf69 RS |
871 | ret->is_branch_target = FALSE; |
872 | ret->is_relocation_target = FALSE; | |
0f20cc35 | 873 | ret->tls_type = GOT_NORMAL; |
b49e97c9 TS |
874 | } |
875 | ||
876 | return (struct bfd_hash_entry *) ret; | |
877 | } | |
f0abc2a1 AM |
878 | |
879 | bfd_boolean | |
9719ad41 | 880 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 881 | { |
f592407e AM |
882 | if (!sec->used_by_bfd) |
883 | { | |
884 | struct _mips_elf_section_data *sdata; | |
885 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 886 | |
f592407e AM |
887 | sdata = bfd_zalloc (abfd, amt); |
888 | if (sdata == NULL) | |
889 | return FALSE; | |
890 | sec->used_by_bfd = sdata; | |
891 | } | |
f0abc2a1 AM |
892 | |
893 | return _bfd_elf_new_section_hook (abfd, sec); | |
894 | } | |
b49e97c9 TS |
895 | \f |
896 | /* Read ECOFF debugging information from a .mdebug section into a | |
897 | ecoff_debug_info structure. */ | |
898 | ||
b34976b6 | 899 | bfd_boolean |
9719ad41 RS |
900 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
901 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
902 | { |
903 | HDRR *symhdr; | |
904 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 905 | char *ext_hdr; |
b49e97c9 TS |
906 | |
907 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
908 | memset (debug, 0, sizeof (*debug)); | |
909 | ||
9719ad41 | 910 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
911 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
912 | goto error_return; | |
913 | ||
9719ad41 | 914 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 915 | swap->external_hdr_size)) |
b49e97c9 TS |
916 | goto error_return; |
917 | ||
918 | symhdr = &debug->symbolic_header; | |
919 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
920 | ||
921 | /* The symbolic header contains absolute file offsets and sizes to | |
922 | read. */ | |
923 | #define READ(ptr, offset, count, size, type) \ | |
924 | if (symhdr->count == 0) \ | |
925 | debug->ptr = NULL; \ | |
926 | else \ | |
927 | { \ | |
928 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
9719ad41 | 929 | debug->ptr = bfd_malloc (amt); \ |
b49e97c9 TS |
930 | if (debug->ptr == NULL) \ |
931 | goto error_return; \ | |
9719ad41 | 932 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \ |
b49e97c9 TS |
933 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
934 | goto error_return; \ | |
935 | } | |
936 | ||
937 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
938 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
939 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
940 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
941 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
942 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
943 | union aux_ext *); | |
944 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
945 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
946 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
947 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
948 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
949 | #undef READ |
950 | ||
951 | debug->fdr = NULL; | |
b49e97c9 | 952 | |
b34976b6 | 953 | return TRUE; |
b49e97c9 TS |
954 | |
955 | error_return: | |
956 | if (ext_hdr != NULL) | |
957 | free (ext_hdr); | |
958 | if (debug->line != NULL) | |
959 | free (debug->line); | |
960 | if (debug->external_dnr != NULL) | |
961 | free (debug->external_dnr); | |
962 | if (debug->external_pdr != NULL) | |
963 | free (debug->external_pdr); | |
964 | if (debug->external_sym != NULL) | |
965 | free (debug->external_sym); | |
966 | if (debug->external_opt != NULL) | |
967 | free (debug->external_opt); | |
968 | if (debug->external_aux != NULL) | |
969 | free (debug->external_aux); | |
970 | if (debug->ss != NULL) | |
971 | free (debug->ss); | |
972 | if (debug->ssext != NULL) | |
973 | free (debug->ssext); | |
974 | if (debug->external_fdr != NULL) | |
975 | free (debug->external_fdr); | |
976 | if (debug->external_rfd != NULL) | |
977 | free (debug->external_rfd); | |
978 | if (debug->external_ext != NULL) | |
979 | free (debug->external_ext); | |
b34976b6 | 980 | return FALSE; |
b49e97c9 TS |
981 | } |
982 | \f | |
983 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
984 | ||
985 | static void | |
9719ad41 | 986 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
987 | { |
988 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
989 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
990 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
991 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
992 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
993 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
994 | ||
995 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
996 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
997 | ||
998 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
999 | } |
1000 | ||
1001 | /* Create a runtime procedure table from the .mdebug section. */ | |
1002 | ||
b34976b6 | 1003 | static bfd_boolean |
9719ad41 RS |
1004 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1005 | struct bfd_link_info *info, asection *s, | |
1006 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1007 | { |
1008 | const struct ecoff_debug_swap *swap; | |
1009 | HDRR *hdr = &debug->symbolic_header; | |
1010 | RPDR *rpdr, *rp; | |
1011 | struct rpdr_ext *erp; | |
9719ad41 | 1012 | void *rtproc; |
b49e97c9 TS |
1013 | struct pdr_ext *epdr; |
1014 | struct sym_ext *esym; | |
1015 | char *ss, **sv; | |
1016 | char *str; | |
1017 | bfd_size_type size; | |
1018 | bfd_size_type count; | |
1019 | unsigned long sindex; | |
1020 | unsigned long i; | |
1021 | PDR pdr; | |
1022 | SYMR sym; | |
1023 | const char *no_name_func = _("static procedure (no name)"); | |
1024 | ||
1025 | epdr = NULL; | |
1026 | rpdr = NULL; | |
1027 | esym = NULL; | |
1028 | ss = NULL; | |
1029 | sv = NULL; | |
1030 | ||
1031 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1032 | ||
1033 | sindex = strlen (no_name_func) + 1; | |
1034 | count = hdr->ipdMax; | |
1035 | if (count > 0) | |
1036 | { | |
1037 | size = swap->external_pdr_size; | |
1038 | ||
9719ad41 | 1039 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1040 | if (epdr == NULL) |
1041 | goto error_return; | |
1042 | ||
9719ad41 | 1043 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1044 | goto error_return; |
1045 | ||
1046 | size = sizeof (RPDR); | |
9719ad41 | 1047 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1048 | if (rpdr == NULL) |
1049 | goto error_return; | |
1050 | ||
1051 | size = sizeof (char *); | |
9719ad41 | 1052 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1053 | if (sv == NULL) |
1054 | goto error_return; | |
1055 | ||
1056 | count = hdr->isymMax; | |
1057 | size = swap->external_sym_size; | |
9719ad41 | 1058 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1059 | if (esym == NULL) |
1060 | goto error_return; | |
1061 | ||
9719ad41 | 1062 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1063 | goto error_return; |
1064 | ||
1065 | count = hdr->issMax; | |
9719ad41 | 1066 | ss = bfd_malloc (count); |
b49e97c9 TS |
1067 | if (ss == NULL) |
1068 | goto error_return; | |
f075ee0c | 1069 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1070 | goto error_return; |
1071 | ||
1072 | count = hdr->ipdMax; | |
1073 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1074 | { | |
9719ad41 RS |
1075 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1076 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1077 | rp->adr = sym.value; |
1078 | rp->regmask = pdr.regmask; | |
1079 | rp->regoffset = pdr.regoffset; | |
1080 | rp->fregmask = pdr.fregmask; | |
1081 | rp->fregoffset = pdr.fregoffset; | |
1082 | rp->frameoffset = pdr.frameoffset; | |
1083 | rp->framereg = pdr.framereg; | |
1084 | rp->pcreg = pdr.pcreg; | |
1085 | rp->irpss = sindex; | |
1086 | sv[i] = ss + sym.iss; | |
1087 | sindex += strlen (sv[i]) + 1; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1092 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1093 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1094 | if (rtproc == NULL) |
1095 | { | |
1096 | mips_elf_hash_table (info)->procedure_count = 0; | |
1097 | goto error_return; | |
1098 | } | |
1099 | ||
1100 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1101 | ||
9719ad41 | 1102 | erp = rtproc; |
b49e97c9 TS |
1103 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1104 | erp++; | |
1105 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1106 | strcpy (str, no_name_func); | |
1107 | str += strlen (no_name_func) + 1; | |
1108 | for (i = 0; i < count; i++) | |
1109 | { | |
1110 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1111 | strcpy (str, sv[i]); | |
1112 | str += strlen (sv[i]) + 1; | |
1113 | } | |
1114 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1115 | ||
1116 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1117 | s->size = size; |
9719ad41 | 1118 | s->contents = rtproc; |
b49e97c9 TS |
1119 | |
1120 | /* Skip this section later on (I don't think this currently | |
1121 | matters, but someday it might). */ | |
8423293d | 1122 | s->map_head.link_order = NULL; |
b49e97c9 TS |
1123 | |
1124 | if (epdr != NULL) | |
1125 | free (epdr); | |
1126 | if (rpdr != NULL) | |
1127 | free (rpdr); | |
1128 | if (esym != NULL) | |
1129 | free (esym); | |
1130 | if (ss != NULL) | |
1131 | free (ss); | |
1132 | if (sv != NULL) | |
1133 | free (sv); | |
1134 | ||
b34976b6 | 1135 | return TRUE; |
b49e97c9 TS |
1136 | |
1137 | error_return: | |
1138 | if (epdr != NULL) | |
1139 | free (epdr); | |
1140 | if (rpdr != NULL) | |
1141 | free (rpdr); | |
1142 | if (esym != NULL) | |
1143 | free (esym); | |
1144 | if (ss != NULL) | |
1145 | free (ss); | |
1146 | if (sv != NULL) | |
1147 | free (sv); | |
b34976b6 | 1148 | return FALSE; |
b49e97c9 | 1149 | } |
738e5348 RS |
1150 | \f |
1151 | /* We're about to redefine H. Create a symbol to represent H's | |
1152 | current value and size, to help make the disassembly easier | |
1153 | to read. */ | |
1154 | ||
1155 | static bfd_boolean | |
1156 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, | |
1157 | struct mips_elf_link_hash_entry *h, | |
1158 | const char *prefix) | |
1159 | { | |
1160 | struct bfd_link_hash_entry *bh; | |
1161 | struct elf_link_hash_entry *elfh; | |
1162 | const char *name; | |
1163 | asection *s; | |
1164 | bfd_vma value; | |
1165 | ||
1166 | /* Read the symbol's value. */ | |
1167 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1168 | || h->root.root.type == bfd_link_hash_defweak); | |
1169 | s = h->root.root.u.def.section; | |
1170 | value = h->root.root.u.def.value; | |
1171 | ||
1172 | /* Create a new symbol. */ | |
1173 | name = ACONCAT ((prefix, h->root.root.root.string, NULL)); | |
1174 | bh = NULL; | |
1175 | if (!_bfd_generic_link_add_one_symbol (info, s->owner, name, | |
1176 | BSF_LOCAL, s, value, NULL, | |
1177 | TRUE, FALSE, &bh)) | |
1178 | return FALSE; | |
1179 | ||
1180 | /* Make it local and copy the other attributes from H. */ | |
1181 | elfh = (struct elf_link_hash_entry *) bh; | |
1182 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1183 | elfh->other = h->root.other; | |
1184 | elfh->size = h->root.size; | |
1185 | elfh->forced_local = 1; | |
1186 | return TRUE; | |
1187 | } | |
1188 | ||
1189 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1190 | function rather than to a hard-float stub. */ | |
1191 | ||
1192 | static bfd_boolean | |
1193 | section_allows_mips16_refs_p (asection *section) | |
1194 | { | |
1195 | const char *name; | |
1196 | ||
1197 | name = bfd_get_section_name (section->owner, section); | |
1198 | return (FN_STUB_P (name) | |
1199 | || CALL_STUB_P (name) | |
1200 | || CALL_FP_STUB_P (name) | |
1201 | || strcmp (name, ".pdr") == 0); | |
1202 | } | |
1203 | ||
1204 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1205 | stub section of some kind. Return the R_SYMNDX of the target | |
1206 | function, or 0 if we can't decide which function that is. */ | |
1207 | ||
1208 | static unsigned long | |
1209 | mips16_stub_symndx (asection *sec, const Elf_Internal_Rela *relocs, | |
1210 | const Elf_Internal_Rela *relend) | |
1211 | { | |
1212 | const Elf_Internal_Rela *rel; | |
1213 | ||
1214 | /* Trust the first R_MIPS_NONE relocation, if any. */ | |
1215 | for (rel = relocs; rel < relend; rel++) | |
1216 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) | |
1217 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1218 | ||
1219 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1220 | the traditional behavior. */ | |
1221 | if (relocs < relend) | |
1222 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1223 | ||
1224 | return 0; | |
1225 | } | |
b49e97c9 TS |
1226 | |
1227 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1228 | discard them. */ | |
1229 | ||
b34976b6 | 1230 | static bfd_boolean |
738e5348 | 1231 | mips_elf_check_mips16_stubs (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 1232 | { |
738e5348 RS |
1233 | struct bfd_link_info *info; |
1234 | ||
1235 | info = (struct bfd_link_info *) data; | |
b49e97c9 TS |
1236 | if (h->root.root.type == bfd_link_hash_warning) |
1237 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
1238 | ||
738e5348 RS |
1239 | /* Dynamic symbols must use the standard call interface, in case other |
1240 | objects try to call them. */ | |
1241 | if (h->fn_stub != NULL | |
1242 | && h->root.dynindx != -1) | |
1243 | { | |
1244 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
1245 | h->need_fn_stub = TRUE; | |
1246 | } | |
1247 | ||
b49e97c9 TS |
1248 | if (h->fn_stub != NULL |
1249 | && ! h->need_fn_stub) | |
1250 | { | |
1251 | /* We don't need the fn_stub; the only references to this symbol | |
1252 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
1253 | being included in the link. */ | |
eea6121a | 1254 | h->fn_stub->size = 0; |
b49e97c9 TS |
1255 | h->fn_stub->flags &= ~SEC_RELOC; |
1256 | h->fn_stub->reloc_count = 0; | |
1257 | h->fn_stub->flags |= SEC_EXCLUDE; | |
1258 | } | |
1259 | ||
1260 | if (h->call_stub != NULL | |
30c09090 | 1261 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1262 | { |
1263 | /* We don't need the call_stub; this is a 16 bit function, so | |
1264 | calls from other 16 bit functions are OK. Clobber the size | |
1265 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1266 | h->call_stub->size = 0; |
b49e97c9 TS |
1267 | h->call_stub->flags &= ~SEC_RELOC; |
1268 | h->call_stub->reloc_count = 0; | |
1269 | h->call_stub->flags |= SEC_EXCLUDE; | |
1270 | } | |
1271 | ||
1272 | if (h->call_fp_stub != NULL | |
30c09090 | 1273 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1274 | { |
1275 | /* We don't need the call_stub; this is a 16 bit function, so | |
1276 | calls from other 16 bit functions are OK. Clobber the size | |
1277 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1278 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1279 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1280 | h->call_fp_stub->reloc_count = 0; | |
1281 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
1282 | } | |
1283 | ||
b34976b6 | 1284 | return TRUE; |
b49e97c9 TS |
1285 | } |
1286 | \f | |
d6f16593 MR |
1287 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
1288 | Most mips16 instructions are 16 bits, but these instructions | |
1289 | are 32 bits. | |
1290 | ||
1291 | The format of these instructions is: | |
1292 | ||
1293 | +--------------+--------------------------------+ | |
1294 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
1295 | +--------------+--------------------------------+ | |
1296 | | Immediate 15:0 | | |
1297 | +-----------------------------------------------+ | |
1298 | ||
1299 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
1300 | Note that the immediate value in the first word is swapped. | |
1301 | ||
1302 | When producing a relocatable object file, R_MIPS16_26 is | |
1303 | handled mostly like R_MIPS_26. In particular, the addend is | |
1304 | stored as a straight 26-bit value in a 32-bit instruction. | |
1305 | (gas makes life simpler for itself by never adjusting a | |
1306 | R_MIPS16_26 reloc to be against a section, so the addend is | |
1307 | always zero). However, the 32 bit instruction is stored as 2 | |
1308 | 16-bit values, rather than a single 32-bit value. In a | |
1309 | big-endian file, the result is the same; in a little-endian | |
1310 | file, the two 16-bit halves of the 32 bit value are swapped. | |
1311 | This is so that a disassembler can recognize the jal | |
1312 | instruction. | |
1313 | ||
1314 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
1315 | instruction stored as two 16-bit values. The addend A is the | |
1316 | contents of the targ26 field. The calculation is the same as | |
1317 | R_MIPS_26. When storing the calculated value, reorder the | |
1318 | immediate value as shown above, and don't forget to store the | |
1319 | value as two 16-bit values. | |
1320 | ||
1321 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
1322 | defined as | |
1323 | ||
1324 | big-endian: | |
1325 | +--------+----------------------+ | |
1326 | | | | | |
1327 | | | targ26-16 | | |
1328 | |31 26|25 0| | |
1329 | +--------+----------------------+ | |
1330 | ||
1331 | little-endian: | |
1332 | +----------+------+-------------+ | |
1333 | | | | | | |
1334 | | sub1 | | sub2 | | |
1335 | |0 9|10 15|16 31| | |
1336 | +----------+--------------------+ | |
1337 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
1338 | ((sub1 << 16) | sub2)). | |
1339 | ||
1340 | When producing a relocatable object file, the calculation is | |
1341 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1342 | When producing a fully linked file, the calculation is | |
1343 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
1344 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
1345 | ||
738e5348 RS |
1346 | The table below lists the other MIPS16 instruction relocations. |
1347 | Each one is calculated in the same way as the non-MIPS16 relocation | |
1348 | given on the right, but using the extended MIPS16 layout of 16-bit | |
1349 | immediate fields: | |
1350 | ||
1351 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
1352 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
1353 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
1354 | R_MIPS16_HI16 R_MIPS_HI16 | |
1355 | R_MIPS16_LO16 R_MIPS_LO16 | |
1356 | ||
1357 | A typical instruction will have a format like this: | |
d6f16593 MR |
1358 | |
1359 | +--------------+--------------------------------+ | |
1360 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
1361 | +--------------+--------------------------------+ | |
1362 | | Major | rx | ry | Imm 4:0 | | |
1363 | +--------------+--------------------------------+ | |
1364 | ||
1365 | EXTEND is the five bit value 11110. Major is the instruction | |
1366 | opcode. | |
1367 | ||
738e5348 RS |
1368 | All we need to do here is shuffle the bits appropriately. |
1369 | As above, the two 16-bit halves must be swapped on a | |
1370 | little-endian system. */ | |
1371 | ||
1372 | static inline bfd_boolean | |
1373 | mips16_reloc_p (int r_type) | |
1374 | { | |
1375 | switch (r_type) | |
1376 | { | |
1377 | case R_MIPS16_26: | |
1378 | case R_MIPS16_GPREL: | |
1379 | case R_MIPS16_GOT16: | |
1380 | case R_MIPS16_CALL16: | |
1381 | case R_MIPS16_HI16: | |
1382 | case R_MIPS16_LO16: | |
1383 | return TRUE; | |
1384 | ||
1385 | default: | |
1386 | return FALSE; | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | static inline bfd_boolean | |
1391 | got16_reloc_p (int r_type) | |
1392 | { | |
1393 | return r_type == R_MIPS_GOT16 || r_type == R_MIPS16_GOT16; | |
1394 | } | |
1395 | ||
1396 | static inline bfd_boolean | |
1397 | call16_reloc_p (int r_type) | |
1398 | { | |
1399 | return r_type == R_MIPS_CALL16 || r_type == R_MIPS16_CALL16; | |
1400 | } | |
1401 | ||
1402 | static inline bfd_boolean | |
1403 | hi16_reloc_p (int r_type) | |
1404 | { | |
1405 | return r_type == R_MIPS_HI16 || r_type == R_MIPS16_HI16; | |
1406 | } | |
d6f16593 | 1407 | |
738e5348 RS |
1408 | static inline bfd_boolean |
1409 | lo16_reloc_p (int r_type) | |
1410 | { | |
1411 | return r_type == R_MIPS_LO16 || r_type == R_MIPS16_LO16; | |
1412 | } | |
1413 | ||
1414 | static inline bfd_boolean | |
1415 | mips16_call_reloc_p (int r_type) | |
1416 | { | |
1417 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
1418 | } | |
d6f16593 | 1419 | |
d6f16593 MR |
1420 | void |
1421 | _bfd_mips16_elf_reloc_unshuffle (bfd *abfd, int r_type, | |
1422 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1423 | { | |
1424 | bfd_vma extend, insn, val; | |
1425 | ||
738e5348 | 1426 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1427 | return; |
1428 | ||
1429 | /* Pick up the mips16 extend instruction and the real instruction. */ | |
1430 | extend = bfd_get_16 (abfd, data); | |
1431 | insn = bfd_get_16 (abfd, data + 2); | |
1432 | if (r_type == R_MIPS16_26) | |
1433 | { | |
1434 | if (jal_shuffle) | |
1435 | val = ((extend & 0xfc00) << 16) | ((extend & 0x3e0) << 11) | |
1436 | | ((extend & 0x1f) << 21) | insn; | |
1437 | else | |
1438 | val = extend << 16 | insn; | |
1439 | } | |
1440 | else | |
1441 | val = ((extend & 0xf800) << 16) | ((insn & 0xffe0) << 11) | |
1442 | | ((extend & 0x1f) << 11) | (extend & 0x7e0) | (insn & 0x1f); | |
1443 | bfd_put_32 (abfd, val, data); | |
1444 | } | |
1445 | ||
1446 | void | |
1447 | _bfd_mips16_elf_reloc_shuffle (bfd *abfd, int r_type, | |
1448 | bfd_boolean jal_shuffle, bfd_byte *data) | |
1449 | { | |
1450 | bfd_vma extend, insn, val; | |
1451 | ||
738e5348 | 1452 | if (!mips16_reloc_p (r_type)) |
d6f16593 MR |
1453 | return; |
1454 | ||
1455 | val = bfd_get_32 (abfd, data); | |
1456 | if (r_type == R_MIPS16_26) | |
1457 | { | |
1458 | if (jal_shuffle) | |
1459 | { | |
1460 | insn = val & 0xffff; | |
1461 | extend = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
1462 | | ((val >> 21) & 0x1f); | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | insn = val & 0xffff; | |
1467 | extend = val >> 16; | |
1468 | } | |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | insn = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
1473 | extend = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
1474 | } | |
1475 | bfd_put_16 (abfd, insn, data + 2); | |
1476 | bfd_put_16 (abfd, extend, data); | |
1477 | } | |
1478 | ||
b49e97c9 | 1479 | bfd_reloc_status_type |
9719ad41 RS |
1480 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
1481 | arelent *reloc_entry, asection *input_section, | |
1482 | bfd_boolean relocatable, void *data, bfd_vma gp) | |
b49e97c9 TS |
1483 | { |
1484 | bfd_vma relocation; | |
a7ebbfdf | 1485 | bfd_signed_vma val; |
30ac9238 | 1486 | bfd_reloc_status_type status; |
b49e97c9 TS |
1487 | |
1488 | if (bfd_is_com_section (symbol->section)) | |
1489 | relocation = 0; | |
1490 | else | |
1491 | relocation = symbol->value; | |
1492 | ||
1493 | relocation += symbol->section->output_section->vma; | |
1494 | relocation += symbol->section->output_offset; | |
1495 | ||
07515404 | 1496 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
b49e97c9 TS |
1497 | return bfd_reloc_outofrange; |
1498 | ||
b49e97c9 | 1499 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
1500 | val = reloc_entry->addend; |
1501 | ||
30ac9238 | 1502 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 1503 | |
b49e97c9 | 1504 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 1505 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 1506 | an external symbol. */ |
1049f94e | 1507 | if (! relocatable |
b49e97c9 TS |
1508 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
1509 | val += relocation - gp; | |
1510 | ||
a7ebbfdf TS |
1511 | if (reloc_entry->howto->partial_inplace) |
1512 | { | |
30ac9238 RS |
1513 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
1514 | (bfd_byte *) data | |
1515 | + reloc_entry->address); | |
1516 | if (status != bfd_reloc_ok) | |
1517 | return status; | |
a7ebbfdf TS |
1518 | } |
1519 | else | |
1520 | reloc_entry->addend = val; | |
b49e97c9 | 1521 | |
1049f94e | 1522 | if (relocatable) |
b49e97c9 | 1523 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
1524 | |
1525 | return bfd_reloc_ok; | |
1526 | } | |
1527 | ||
1528 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or | |
1529 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
1530 | that contains the relocation field and DATA points to the start of | |
1531 | INPUT_SECTION. */ | |
1532 | ||
1533 | struct mips_hi16 | |
1534 | { | |
1535 | struct mips_hi16 *next; | |
1536 | bfd_byte *data; | |
1537 | asection *input_section; | |
1538 | arelent rel; | |
1539 | }; | |
1540 | ||
1541 | /* FIXME: This should not be a static variable. */ | |
1542 | ||
1543 | static struct mips_hi16 *mips_hi16_list; | |
1544 | ||
1545 | /* A howto special_function for REL *HI16 relocations. We can only | |
1546 | calculate the correct value once we've seen the partnering | |
1547 | *LO16 relocation, so just save the information for later. | |
1548 | ||
1549 | The ABI requires that the *LO16 immediately follow the *HI16. | |
1550 | However, as a GNU extension, we permit an arbitrary number of | |
1551 | *HI16s to be associated with a single *LO16. This significantly | |
1552 | simplies the relocation handling in gcc. */ | |
1553 | ||
1554 | bfd_reloc_status_type | |
1555 | _bfd_mips_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
1556 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, | |
1557 | asection *input_section, bfd *output_bfd, | |
1558 | char **error_message ATTRIBUTE_UNUSED) | |
1559 | { | |
1560 | struct mips_hi16 *n; | |
1561 | ||
07515404 | 1562 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
1563 | return bfd_reloc_outofrange; |
1564 | ||
1565 | n = bfd_malloc (sizeof *n); | |
1566 | if (n == NULL) | |
1567 | return bfd_reloc_outofrange; | |
1568 | ||
1569 | n->next = mips_hi16_list; | |
1570 | n->data = data; | |
1571 | n->input_section = input_section; | |
1572 | n->rel = *reloc_entry; | |
1573 | mips_hi16_list = n; | |
1574 | ||
1575 | if (output_bfd != NULL) | |
1576 | reloc_entry->address += input_section->output_offset; | |
1577 | ||
1578 | return bfd_reloc_ok; | |
1579 | } | |
1580 | ||
738e5348 | 1581 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
1582 | like any other 16-bit relocation when applied to global symbols, but is |
1583 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
1584 | ||
1585 | bfd_reloc_status_type | |
1586 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1587 | void *data, asection *input_section, | |
1588 | bfd *output_bfd, char **error_message) | |
1589 | { | |
1590 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
1591 | || bfd_is_und_section (bfd_get_section (symbol)) | |
1592 | || bfd_is_com_section (bfd_get_section (symbol))) | |
1593 | /* The relocation is against a global symbol. */ | |
1594 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1595 | input_section, output_bfd, | |
1596 | error_message); | |
1597 | ||
1598 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
1599 | input_section, output_bfd, error_message); | |
1600 | } | |
1601 | ||
1602 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
1603 | is a straightforward 16 bit inplace relocation, but we must deal with | |
1604 | any partnering high-part relocations as well. */ | |
1605 | ||
1606 | bfd_reloc_status_type | |
1607 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1608 | void *data, asection *input_section, | |
1609 | bfd *output_bfd, char **error_message) | |
1610 | { | |
1611 | bfd_vma vallo; | |
d6f16593 | 1612 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
30ac9238 | 1613 | |
07515404 | 1614 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
1615 | return bfd_reloc_outofrange; |
1616 | ||
d6f16593 MR |
1617 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
1618 | location); | |
1619 | vallo = bfd_get_32 (abfd, location); | |
1620 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
1621 | location); | |
1622 | ||
30ac9238 RS |
1623 | while (mips_hi16_list != NULL) |
1624 | { | |
1625 | bfd_reloc_status_type ret; | |
1626 | struct mips_hi16 *hi; | |
1627 | ||
1628 | hi = mips_hi16_list; | |
1629 | ||
738e5348 RS |
1630 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
1631 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
1632 | relocation (with a rightshift of 16). However, since GOT16 |
1633 | relocations can also be used with global symbols, their howto | |
1634 | has a rightshift of 0. */ | |
1635 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
1636 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, FALSE); | |
738e5348 RS |
1637 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
1638 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, FALSE); | |
30ac9238 RS |
1639 | |
1640 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
1641 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
1642 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
1643 | ||
30ac9238 RS |
1644 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
1645 | hi->input_section, output_bfd, | |
1646 | error_message); | |
1647 | if (ret != bfd_reloc_ok) | |
1648 | return ret; | |
1649 | ||
1650 | mips_hi16_list = hi->next; | |
1651 | free (hi); | |
1652 | } | |
1653 | ||
1654 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1655 | input_section, output_bfd, | |
1656 | error_message); | |
1657 | } | |
1658 | ||
1659 | /* A generic howto special_function. This calculates and installs the | |
1660 | relocation itself, thus avoiding the oft-discussed problems in | |
1661 | bfd_perform_relocation and bfd_install_relocation. */ | |
1662 | ||
1663 | bfd_reloc_status_type | |
1664 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
1665 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
1666 | asection *input_section, bfd *output_bfd, | |
1667 | char **error_message ATTRIBUTE_UNUSED) | |
1668 | { | |
1669 | bfd_signed_vma val; | |
1670 | bfd_reloc_status_type status; | |
1671 | bfd_boolean relocatable; | |
1672 | ||
1673 | relocatable = (output_bfd != NULL); | |
1674 | ||
07515404 | 1675 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
1676 | return bfd_reloc_outofrange; |
1677 | ||
1678 | /* Build up the field adjustment in VAL. */ | |
1679 | val = 0; | |
1680 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1681 | { | |
1682 | /* Either we're calculating the final field value or we have a | |
1683 | relocation against a section symbol. Add in the section's | |
1684 | offset or address. */ | |
1685 | val += symbol->section->output_section->vma; | |
1686 | val += symbol->section->output_offset; | |
1687 | } | |
1688 | ||
1689 | if (!relocatable) | |
1690 | { | |
1691 | /* We're calculating the final field value. Add in the symbol's value | |
1692 | and, if pc-relative, subtract the address of the field itself. */ | |
1693 | val += symbol->value; | |
1694 | if (reloc_entry->howto->pc_relative) | |
1695 | { | |
1696 | val -= input_section->output_section->vma; | |
1697 | val -= input_section->output_offset; | |
1698 | val -= reloc_entry->address; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | /* VAL is now the final adjustment. If we're keeping this relocation | |
1703 | in the output file, and if the relocation uses a separate addend, | |
1704 | we just need to add VAL to that addend. Otherwise we need to add | |
1705 | VAL to the relocation field itself. */ | |
1706 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
1707 | reloc_entry->addend += val; | |
1708 | else | |
1709 | { | |
d6f16593 MR |
1710 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
1711 | ||
30ac9238 RS |
1712 | /* Add in the separate addend, if any. */ |
1713 | val += reloc_entry->addend; | |
1714 | ||
1715 | /* Add VAL to the relocation field. */ | |
d6f16593 MR |
1716 | _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, |
1717 | location); | |
30ac9238 | 1718 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 MR |
1719 | location); |
1720 | _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, FALSE, | |
1721 | location); | |
1722 | ||
30ac9238 RS |
1723 | if (status != bfd_reloc_ok) |
1724 | return status; | |
1725 | } | |
1726 | ||
1727 | if (relocatable) | |
1728 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
1729 | |
1730 | return bfd_reloc_ok; | |
1731 | } | |
1732 | \f | |
1733 | /* Swap an entry in a .gptab section. Note that these routines rely | |
1734 | on the equivalence of the two elements of the union. */ | |
1735 | ||
1736 | static void | |
9719ad41 RS |
1737 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
1738 | Elf32_gptab *in) | |
b49e97c9 TS |
1739 | { |
1740 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
1741 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
1742 | } | |
1743 | ||
1744 | static void | |
9719ad41 RS |
1745 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
1746 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
1747 | { |
1748 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
1749 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
1750 | } | |
1751 | ||
1752 | static void | |
9719ad41 RS |
1753 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
1754 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
1755 | { |
1756 | H_PUT_32 (abfd, in->id1, ex->id1); | |
1757 | H_PUT_32 (abfd, in->num, ex->num); | |
1758 | H_PUT_32 (abfd, in->id2, ex->id2); | |
1759 | H_PUT_32 (abfd, in->offset, ex->offset); | |
1760 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
1761 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
1762 | } | |
1763 | ||
1764 | static void | |
9719ad41 RS |
1765 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
1766 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
1767 | { |
1768 | unsigned long l; | |
1769 | ||
1770 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
1771 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
1772 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
1773 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
1774 | H_PUT_32 (abfd, l, ex->info); | |
1775 | H_PUT_32 (abfd, in->konst, ex->konst); | |
1776 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
1777 | } | |
b49e97c9 TS |
1778 | \f |
1779 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
1780 | routines swap this structure in and out. They are used outside of | |
1781 | BFD, so they are globally visible. */ | |
1782 | ||
1783 | void | |
9719ad41 RS |
1784 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
1785 | Elf32_RegInfo *in) | |
b49e97c9 TS |
1786 | { |
1787 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
1788 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
1789 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
1790 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
1791 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
1792 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
1793 | } | |
1794 | ||
1795 | void | |
9719ad41 RS |
1796 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
1797 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
1798 | { |
1799 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
1800 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
1801 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
1802 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
1803 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
1804 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
1805 | } | |
1806 | ||
1807 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
1808 | information in an Elf64_Reginfo structure. These routines swap | |
1809 | them in and out. They are globally visible because they are used | |
1810 | outside of BFD. These routines are here so that gas can call them | |
1811 | without worrying about whether the 64 bit ABI has been included. */ | |
1812 | ||
1813 | void | |
9719ad41 RS |
1814 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
1815 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
1816 | { |
1817 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
1818 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
1819 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
1820 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
1821 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
1822 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
1823 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
1824 | } | |
1825 | ||
1826 | void | |
9719ad41 RS |
1827 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
1828 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
1829 | { |
1830 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
1831 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
1832 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
1833 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
1834 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
1835 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
1836 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
1837 | } | |
1838 | ||
1839 | /* Swap in an options header. */ | |
1840 | ||
1841 | void | |
9719ad41 RS |
1842 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
1843 | Elf_Internal_Options *in) | |
b49e97c9 TS |
1844 | { |
1845 | in->kind = H_GET_8 (abfd, ex->kind); | |
1846 | in->size = H_GET_8 (abfd, ex->size); | |
1847 | in->section = H_GET_16 (abfd, ex->section); | |
1848 | in->info = H_GET_32 (abfd, ex->info); | |
1849 | } | |
1850 | ||
1851 | /* Swap out an options header. */ | |
1852 | ||
1853 | void | |
9719ad41 RS |
1854 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
1855 | Elf_External_Options *ex) | |
b49e97c9 TS |
1856 | { |
1857 | H_PUT_8 (abfd, in->kind, ex->kind); | |
1858 | H_PUT_8 (abfd, in->size, ex->size); | |
1859 | H_PUT_16 (abfd, in->section, ex->section); | |
1860 | H_PUT_32 (abfd, in->info, ex->info); | |
1861 | } | |
1862 | \f | |
1863 | /* This function is called via qsort() to sort the dynamic relocation | |
1864 | entries by increasing r_symndx value. */ | |
1865 | ||
1866 | static int | |
9719ad41 | 1867 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 1868 | { |
947216bf AM |
1869 | Elf_Internal_Rela int_reloc1; |
1870 | Elf_Internal_Rela int_reloc2; | |
6870500c | 1871 | int diff; |
b49e97c9 | 1872 | |
947216bf AM |
1873 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
1874 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 1875 | |
6870500c RS |
1876 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
1877 | if (diff != 0) | |
1878 | return diff; | |
1879 | ||
1880 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
1881 | return -1; | |
1882 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
1883 | return 1; | |
1884 | return 0; | |
b49e97c9 TS |
1885 | } |
1886 | ||
f4416af6 AO |
1887 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
1888 | ||
1889 | static int | |
7e3102a7 AM |
1890 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
1891 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 1892 | { |
7e3102a7 | 1893 | #ifdef BFD64 |
f4416af6 AO |
1894 | Elf_Internal_Rela int_reloc1[3]; |
1895 | Elf_Internal_Rela int_reloc2[3]; | |
1896 | ||
1897 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
1898 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
1899 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
1900 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
1901 | ||
6870500c RS |
1902 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
1903 | return -1; | |
1904 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
1905 | return 1; | |
1906 | ||
1907 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
1908 | return -1; | |
1909 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
1910 | return 1; | |
1911 | return 0; | |
7e3102a7 AM |
1912 | #else |
1913 | abort (); | |
1914 | #endif | |
f4416af6 AO |
1915 | } |
1916 | ||
1917 | ||
b49e97c9 TS |
1918 | /* This routine is used to write out ECOFF debugging external symbol |
1919 | information. It is called via mips_elf_link_hash_traverse. The | |
1920 | ECOFF external symbol information must match the ELF external | |
1921 | symbol information. Unfortunately, at this point we don't know | |
1922 | whether a symbol is required by reloc information, so the two | |
1923 | tables may wind up being different. We must sort out the external | |
1924 | symbol information before we can set the final size of the .mdebug | |
1925 | section, and we must set the size of the .mdebug section before we | |
1926 | can relocate any sections, and we can't know which symbols are | |
1927 | required by relocation until we relocate the sections. | |
1928 | Fortunately, it is relatively unlikely that any symbol will be | |
1929 | stripped but required by a reloc. In particular, it can not happen | |
1930 | when generating a final executable. */ | |
1931 | ||
b34976b6 | 1932 | static bfd_boolean |
9719ad41 | 1933 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 1934 | { |
9719ad41 | 1935 | struct extsym_info *einfo = data; |
b34976b6 | 1936 | bfd_boolean strip; |
b49e97c9 TS |
1937 | asection *sec, *output_section; |
1938 | ||
1939 | if (h->root.root.type == bfd_link_hash_warning) | |
1940 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
1941 | ||
1942 | if (h->root.indx == -2) | |
b34976b6 | 1943 | strip = FALSE; |
f5385ebf | 1944 | else if ((h->root.def_dynamic |
77cfaee6 AM |
1945 | || h->root.ref_dynamic |
1946 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
1947 | && !h->root.def_regular |
1948 | && !h->root.ref_regular) | |
b34976b6 | 1949 | strip = TRUE; |
b49e97c9 TS |
1950 | else if (einfo->info->strip == strip_all |
1951 | || (einfo->info->strip == strip_some | |
1952 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1953 | h->root.root.root.string, | |
b34976b6 AM |
1954 | FALSE, FALSE) == NULL)) |
1955 | strip = TRUE; | |
b49e97c9 | 1956 | else |
b34976b6 | 1957 | strip = FALSE; |
b49e97c9 TS |
1958 | |
1959 | if (strip) | |
b34976b6 | 1960 | return TRUE; |
b49e97c9 TS |
1961 | |
1962 | if (h->esym.ifd == -2) | |
1963 | { | |
1964 | h->esym.jmptbl = 0; | |
1965 | h->esym.cobol_main = 0; | |
1966 | h->esym.weakext = 0; | |
1967 | h->esym.reserved = 0; | |
1968 | h->esym.ifd = ifdNil; | |
1969 | h->esym.asym.value = 0; | |
1970 | h->esym.asym.st = stGlobal; | |
1971 | ||
1972 | if (h->root.root.type == bfd_link_hash_undefined | |
1973 | || h->root.root.type == bfd_link_hash_undefweak) | |
1974 | { | |
1975 | const char *name; | |
1976 | ||
1977 | /* Use undefined class. Also, set class and type for some | |
1978 | special symbols. */ | |
1979 | name = h->root.root.root.string; | |
1980 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
1981 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
1982 | { | |
1983 | h->esym.asym.sc = scData; | |
1984 | h->esym.asym.st = stLabel; | |
1985 | h->esym.asym.value = 0; | |
1986 | } | |
1987 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
1988 | { | |
1989 | h->esym.asym.sc = scAbs; | |
1990 | h->esym.asym.st = stLabel; | |
1991 | h->esym.asym.value = | |
1992 | mips_elf_hash_table (einfo->info)->procedure_count; | |
1993 | } | |
4a14403c | 1994 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd)) |
b49e97c9 TS |
1995 | { |
1996 | h->esym.asym.sc = scAbs; | |
1997 | h->esym.asym.st = stLabel; | |
1998 | h->esym.asym.value = elf_gp (einfo->abfd); | |
1999 | } | |
2000 | else | |
2001 | h->esym.asym.sc = scUndefined; | |
2002 | } | |
2003 | else if (h->root.root.type != bfd_link_hash_defined | |
2004 | && h->root.root.type != bfd_link_hash_defweak) | |
2005 | h->esym.asym.sc = scAbs; | |
2006 | else | |
2007 | { | |
2008 | const char *name; | |
2009 | ||
2010 | sec = h->root.root.u.def.section; | |
2011 | output_section = sec->output_section; | |
2012 | ||
2013 | /* When making a shared library and symbol h is the one from | |
2014 | the another shared library, OUTPUT_SECTION may be null. */ | |
2015 | if (output_section == NULL) | |
2016 | h->esym.asym.sc = scUndefined; | |
2017 | else | |
2018 | { | |
2019 | name = bfd_section_name (output_section->owner, output_section); | |
2020 | ||
2021 | if (strcmp (name, ".text") == 0) | |
2022 | h->esym.asym.sc = scText; | |
2023 | else if (strcmp (name, ".data") == 0) | |
2024 | h->esym.asym.sc = scData; | |
2025 | else if (strcmp (name, ".sdata") == 0) | |
2026 | h->esym.asym.sc = scSData; | |
2027 | else if (strcmp (name, ".rodata") == 0 | |
2028 | || strcmp (name, ".rdata") == 0) | |
2029 | h->esym.asym.sc = scRData; | |
2030 | else if (strcmp (name, ".bss") == 0) | |
2031 | h->esym.asym.sc = scBss; | |
2032 | else if (strcmp (name, ".sbss") == 0) | |
2033 | h->esym.asym.sc = scSBss; | |
2034 | else if (strcmp (name, ".init") == 0) | |
2035 | h->esym.asym.sc = scInit; | |
2036 | else if (strcmp (name, ".fini") == 0) | |
2037 | h->esym.asym.sc = scFini; | |
2038 | else | |
2039 | h->esym.asym.sc = scAbs; | |
2040 | } | |
2041 | } | |
2042 | ||
2043 | h->esym.asym.reserved = 0; | |
2044 | h->esym.asym.index = indexNil; | |
2045 | } | |
2046 | ||
2047 | if (h->root.root.type == bfd_link_hash_common) | |
2048 | h->esym.asym.value = h->root.root.u.c.size; | |
2049 | else if (h->root.root.type == bfd_link_hash_defined | |
2050 | || h->root.root.type == bfd_link_hash_defweak) | |
2051 | { | |
2052 | if (h->esym.asym.sc == scCommon) | |
2053 | h->esym.asym.sc = scBss; | |
2054 | else if (h->esym.asym.sc == scSCommon) | |
2055 | h->esym.asym.sc = scSBss; | |
2056 | ||
2057 | sec = h->root.root.u.def.section; | |
2058 | output_section = sec->output_section; | |
2059 | if (output_section != NULL) | |
2060 | h->esym.asym.value = (h->root.root.u.def.value | |
2061 | + sec->output_offset | |
2062 | + output_section->vma); | |
2063 | else | |
2064 | h->esym.asym.value = 0; | |
2065 | } | |
f5385ebf | 2066 | else if (h->root.needs_plt) |
b49e97c9 TS |
2067 | { |
2068 | struct mips_elf_link_hash_entry *hd = h; | |
b34976b6 | 2069 | bfd_boolean no_fn_stub = h->no_fn_stub; |
b49e97c9 TS |
2070 | |
2071 | while (hd->root.root.type == bfd_link_hash_indirect) | |
2072 | { | |
2073 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; | |
2074 | no_fn_stub = no_fn_stub || hd->no_fn_stub; | |
2075 | } | |
2076 | ||
2077 | if (!no_fn_stub) | |
2078 | { | |
2079 | /* Set type and value for a symbol with a function stub. */ | |
2080 | h->esym.asym.st = stProc; | |
2081 | sec = hd->root.root.u.def.section; | |
2082 | if (sec == NULL) | |
2083 | h->esym.asym.value = 0; | |
2084 | else | |
2085 | { | |
2086 | output_section = sec->output_section; | |
2087 | if (output_section != NULL) | |
2088 | h->esym.asym.value = (hd->root.plt.offset | |
2089 | + sec->output_offset | |
2090 | + output_section->vma); | |
2091 | else | |
2092 | h->esym.asym.value = 0; | |
2093 | } | |
b49e97c9 TS |
2094 | } |
2095 | } | |
2096 | ||
2097 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2098 | h->root.root.root.string, | |
2099 | &h->esym)) | |
2100 | { | |
b34976b6 AM |
2101 | einfo->failed = TRUE; |
2102 | return FALSE; | |
b49e97c9 TS |
2103 | } |
2104 | ||
b34976b6 | 2105 | return TRUE; |
b49e97c9 TS |
2106 | } |
2107 | ||
2108 | /* A comparison routine used to sort .gptab entries. */ | |
2109 | ||
2110 | static int | |
9719ad41 | 2111 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 2112 | { |
9719ad41 RS |
2113 | const Elf32_gptab *a1 = p1; |
2114 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
2115 | |
2116 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
2117 | } | |
2118 | \f | |
b15e6682 | 2119 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
2120 | |
2121 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
2122 | hash number. */ | |
2123 | ||
2124 | static INLINE hashval_t | |
9719ad41 | 2125 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
2126 | { |
2127 | #ifdef BFD64 | |
2128 | return addr + (addr >> 32); | |
2129 | #else | |
2130 | return addr; | |
2131 | #endif | |
2132 | } | |
2133 | ||
2134 | /* got_entries only match if they're identical, except for gotidx, so | |
2135 | use all fields to compute the hash, and compare the appropriate | |
2136 | union members. */ | |
2137 | ||
b15e6682 | 2138 | static hashval_t |
9719ad41 | 2139 | mips_elf_got_entry_hash (const void *entry_) |
b15e6682 AO |
2140 | { |
2141 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2142 | ||
38985a1c | 2143 | return entry->symndx |
0f20cc35 | 2144 | + ((entry->tls_type & GOT_TLS_LDM) << 17) |
f4416af6 | 2145 | + (! entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
38985a1c AO |
2146 | : entry->abfd->id |
2147 | + (entry->symndx >= 0 ? mips_elf_hash_bfd_vma (entry->d.addend) | |
2148 | : entry->d.h->root.root.root.hash)); | |
b15e6682 AO |
2149 | } |
2150 | ||
2151 | static int | |
9719ad41 | 2152 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
b15e6682 AO |
2153 | { |
2154 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2155 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2156 | ||
0f20cc35 DJ |
2157 | /* An LDM entry can only match another LDM entry. */ |
2158 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2159 | return 0; | |
2160 | ||
b15e6682 | 2161 | return e1->abfd == e2->abfd && e1->symndx == e2->symndx |
f4416af6 AO |
2162 | && (! e1->abfd ? e1->d.address == e2->d.address |
2163 | : e1->symndx >= 0 ? e1->d.addend == e2->d.addend | |
2164 | : e1->d.h == e2->d.h); | |
2165 | } | |
2166 | ||
2167 | /* multi_got_entries are still a match in the case of global objects, | |
2168 | even if the input bfd in which they're referenced differs, so the | |
2169 | hash computation and compare functions are adjusted | |
2170 | accordingly. */ | |
2171 | ||
2172 | static hashval_t | |
9719ad41 | 2173 | mips_elf_multi_got_entry_hash (const void *entry_) |
f4416af6 AO |
2174 | { |
2175 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
2176 | ||
2177 | return entry->symndx | |
2178 | + (! entry->abfd | |
2179 | ? mips_elf_hash_bfd_vma (entry->d.address) | |
2180 | : entry->symndx >= 0 | |
0f20cc35 DJ |
2181 | ? ((entry->tls_type & GOT_TLS_LDM) |
2182 | ? (GOT_TLS_LDM << 17) | |
2183 | : (entry->abfd->id | |
2184 | + mips_elf_hash_bfd_vma (entry->d.addend))) | |
f4416af6 AO |
2185 | : entry->d.h->root.root.root.hash); |
2186 | } | |
2187 | ||
2188 | static int | |
9719ad41 | 2189 | mips_elf_multi_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
2190 | { |
2191 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
2192 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
2193 | ||
0f20cc35 DJ |
2194 | /* Any two LDM entries match. */ |
2195 | if (e1->tls_type & e2->tls_type & GOT_TLS_LDM) | |
2196 | return 1; | |
2197 | ||
2198 | /* Nothing else matches an LDM entry. */ | |
2199 | if ((e1->tls_type ^ e2->tls_type) & GOT_TLS_LDM) | |
2200 | return 0; | |
2201 | ||
f4416af6 AO |
2202 | return e1->symndx == e2->symndx |
2203 | && (e1->symndx >= 0 ? e1->abfd == e2->abfd && e1->d.addend == e2->d.addend | |
2204 | : e1->abfd == NULL || e2->abfd == NULL | |
2205 | ? e1->abfd == e2->abfd && e1->d.address == e2->d.address | |
2206 | : e1->d.h == e2->d.h); | |
b15e6682 | 2207 | } |
c224138d RS |
2208 | |
2209 | static hashval_t | |
2210 | mips_got_page_entry_hash (const void *entry_) | |
2211 | { | |
2212 | const struct mips_got_page_entry *entry; | |
2213 | ||
2214 | entry = (const struct mips_got_page_entry *) entry_; | |
2215 | return entry->abfd->id + entry->symndx; | |
2216 | } | |
2217 | ||
2218 | static int | |
2219 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
2220 | { | |
2221 | const struct mips_got_page_entry *entry1, *entry2; | |
2222 | ||
2223 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
2224 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
2225 | return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx; | |
2226 | } | |
b15e6682 | 2227 | \f |
0a44bf69 RS |
2228 | /* Return the dynamic relocation section. If it doesn't exist, try to |
2229 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
2230 | if creation fails. */ | |
f4416af6 AO |
2231 | |
2232 | static asection * | |
0a44bf69 | 2233 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bfd_boolean create_p) |
f4416af6 | 2234 | { |
0a44bf69 | 2235 | const char *dname; |
f4416af6 | 2236 | asection *sreloc; |
0a44bf69 | 2237 | bfd *dynobj; |
f4416af6 | 2238 | |
0a44bf69 RS |
2239 | dname = MIPS_ELF_REL_DYN_NAME (info); |
2240 | dynobj = elf_hash_table (info)->dynobj; | |
f4416af6 AO |
2241 | sreloc = bfd_get_section_by_name (dynobj, dname); |
2242 | if (sreloc == NULL && create_p) | |
2243 | { | |
3496cb2a L |
2244 | sreloc = bfd_make_section_with_flags (dynobj, dname, |
2245 | (SEC_ALLOC | |
2246 | | SEC_LOAD | |
2247 | | SEC_HAS_CONTENTS | |
2248 | | SEC_IN_MEMORY | |
2249 | | SEC_LINKER_CREATED | |
2250 | | SEC_READONLY)); | |
f4416af6 | 2251 | if (sreloc == NULL |
f4416af6 | 2252 | || ! bfd_set_section_alignment (dynobj, sreloc, |
d80dcc6a | 2253 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
f4416af6 AO |
2254 | return NULL; |
2255 | } | |
2256 | return sreloc; | |
2257 | } | |
2258 | ||
b49e97c9 TS |
2259 | /* Returns the GOT section for ABFD. */ |
2260 | ||
2261 | static asection * | |
9719ad41 | 2262 | mips_elf_got_section (bfd *abfd, bfd_boolean maybe_excluded) |
b49e97c9 | 2263 | { |
f4416af6 AO |
2264 | asection *sgot = bfd_get_section_by_name (abfd, ".got"); |
2265 | if (sgot == NULL | |
2266 | || (! maybe_excluded && (sgot->flags & SEC_EXCLUDE) != 0)) | |
2267 | return NULL; | |
2268 | return sgot; | |
b49e97c9 TS |
2269 | } |
2270 | ||
2271 | /* Returns the GOT information associated with the link indicated by | |
2272 | INFO. If SGOTP is non-NULL, it is filled in with the GOT | |
2273 | section. */ | |
2274 | ||
2275 | static struct mips_got_info * | |
9719ad41 | 2276 | mips_elf_got_info (bfd *abfd, asection **sgotp) |
b49e97c9 TS |
2277 | { |
2278 | asection *sgot; | |
2279 | struct mips_got_info *g; | |
2280 | ||
f4416af6 | 2281 | sgot = mips_elf_got_section (abfd, TRUE); |
b49e97c9 | 2282 | BFD_ASSERT (sgot != NULL); |
f0abc2a1 AM |
2283 | BFD_ASSERT (mips_elf_section_data (sgot) != NULL); |
2284 | g = mips_elf_section_data (sgot)->u.got_info; | |
b49e97c9 TS |
2285 | BFD_ASSERT (g != NULL); |
2286 | ||
2287 | if (sgotp) | |
f4416af6 AO |
2288 | *sgotp = (sgot->flags & SEC_EXCLUDE) == 0 ? sgot : NULL; |
2289 | ||
b49e97c9 TS |
2290 | return g; |
2291 | } | |
2292 | ||
0f20cc35 DJ |
2293 | /* Count the number of relocations needed for a TLS GOT entry, with |
2294 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
2295 | is NULL). */ | |
2296 | ||
2297 | static int | |
2298 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
2299 | struct elf_link_hash_entry *h) | |
2300 | { | |
2301 | int indx = 0; | |
2302 | int ret = 0; | |
2303 | bfd_boolean need_relocs = FALSE; | |
2304 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2305 | ||
2306 | if (h && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2307 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
2308 | indx = h->dynindx; | |
2309 | ||
2310 | if ((info->shared || indx != 0) | |
2311 | && (h == NULL | |
2312 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2313 | || h->root.type != bfd_link_hash_undefweak)) | |
2314 | need_relocs = TRUE; | |
2315 | ||
2316 | if (!need_relocs) | |
2317 | return FALSE; | |
2318 | ||
2319 | if (tls_type & GOT_TLS_GD) | |
2320 | { | |
2321 | ret++; | |
2322 | if (indx != 0) | |
2323 | ret++; | |
2324 | } | |
2325 | ||
2326 | if (tls_type & GOT_TLS_IE) | |
2327 | ret++; | |
2328 | ||
2329 | if ((tls_type & GOT_TLS_LDM) && info->shared) | |
2330 | ret++; | |
2331 | ||
2332 | return ret; | |
2333 | } | |
2334 | ||
2335 | /* Count the number of TLS relocations required for the GOT entry in | |
2336 | ARG1, if it describes a local symbol. */ | |
2337 | ||
2338 | static int | |
2339 | mips_elf_count_local_tls_relocs (void **arg1, void *arg2) | |
2340 | { | |
2341 | struct mips_got_entry *entry = * (struct mips_got_entry **) arg1; | |
2342 | struct mips_elf_count_tls_arg *arg = arg2; | |
2343 | ||
2344 | if (entry->abfd != NULL && entry->symndx != -1) | |
2345 | arg->needed += mips_tls_got_relocs (arg->info, entry->tls_type, NULL); | |
2346 | ||
2347 | return 1; | |
2348 | } | |
2349 | ||
2350 | /* Count the number of TLS GOT entries required for the global (or | |
2351 | forced-local) symbol in ARG1. */ | |
2352 | ||
2353 | static int | |
2354 | mips_elf_count_global_tls_entries (void *arg1, void *arg2) | |
2355 | { | |
2356 | struct mips_elf_link_hash_entry *hm | |
2357 | = (struct mips_elf_link_hash_entry *) arg1; | |
2358 | struct mips_elf_count_tls_arg *arg = arg2; | |
2359 | ||
2360 | if (hm->tls_type & GOT_TLS_GD) | |
2361 | arg->needed += 2; | |
2362 | if (hm->tls_type & GOT_TLS_IE) | |
2363 | arg->needed += 1; | |
2364 | ||
2365 | return 1; | |
2366 | } | |
2367 | ||
2368 | /* Count the number of TLS relocations required for the global (or | |
2369 | forced-local) symbol in ARG1. */ | |
2370 | ||
2371 | static int | |
2372 | mips_elf_count_global_tls_relocs (void *arg1, void *arg2) | |
2373 | { | |
2374 | struct mips_elf_link_hash_entry *hm | |
2375 | = (struct mips_elf_link_hash_entry *) arg1; | |
2376 | struct mips_elf_count_tls_arg *arg = arg2; | |
2377 | ||
2378 | arg->needed += mips_tls_got_relocs (arg->info, hm->tls_type, &hm->root); | |
2379 | ||
2380 | return 1; | |
2381 | } | |
2382 | ||
2383 | /* Output a simple dynamic relocation into SRELOC. */ | |
2384 | ||
2385 | static void | |
2386 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
2387 | asection *sreloc, | |
2388 | unsigned long indx, | |
2389 | int r_type, | |
2390 | bfd_vma offset) | |
2391 | { | |
2392 | Elf_Internal_Rela rel[3]; | |
2393 | ||
2394 | memset (rel, 0, sizeof (rel)); | |
2395 | ||
2396 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
2397 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
2398 | ||
2399 | if (ABI_64_P (output_bfd)) | |
2400 | { | |
2401 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
2402 | (output_bfd, &rel[0], | |
2403 | (sreloc->contents | |
2404 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
2405 | } | |
2406 | else | |
2407 | bfd_elf32_swap_reloc_out | |
2408 | (output_bfd, &rel[0], | |
2409 | (sreloc->contents | |
2410 | + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
2411 | ++sreloc->reloc_count; | |
2412 | } | |
2413 | ||
2414 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
2415 | ||
2416 | static void | |
2417 | mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset, | |
2418 | unsigned char *tls_type_p, | |
2419 | struct bfd_link_info *info, | |
2420 | struct mips_elf_link_hash_entry *h, | |
2421 | bfd_vma value) | |
2422 | { | |
2423 | int indx; | |
2424 | asection *sreloc, *sgot; | |
2425 | bfd_vma offset, offset2; | |
2426 | bfd *dynobj; | |
2427 | bfd_boolean need_relocs = FALSE; | |
2428 | ||
2429 | dynobj = elf_hash_table (info)->dynobj; | |
2430 | sgot = mips_elf_got_section (dynobj, FALSE); | |
2431 | ||
2432 | indx = 0; | |
2433 | if (h != NULL) | |
2434 | { | |
2435 | bfd_boolean dyn = elf_hash_table (info)->dynamic_sections_created; | |
2436 | ||
2437 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &h->root) | |
2438 | && (!info->shared || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
2439 | indx = h->root.dynindx; | |
2440 | } | |
2441 | ||
2442 | if (*tls_type_p & GOT_TLS_DONE) | |
2443 | return; | |
2444 | ||
2445 | if ((info->shared || indx != 0) | |
2446 | && (h == NULL | |
2447 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
2448 | || h->root.type != bfd_link_hash_undefweak)) | |
2449 | need_relocs = TRUE; | |
2450 | ||
2451 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
2452 | be defined at all; assume that the value doesn't matter in that | |
2453 | case. Otherwise complain if we would use the value. */ | |
2454 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
2455 | || h->root.root.type == bfd_link_hash_undefweak); | |
2456 | ||
2457 | /* Emit necessary relocations. */ | |
0a44bf69 | 2458 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
0f20cc35 DJ |
2459 | |
2460 | /* General Dynamic. */ | |
2461 | if (*tls_type_p & GOT_TLS_GD) | |
2462 | { | |
2463 | offset = got_offset; | |
2464 | offset2 = offset + MIPS_ELF_GOT_SIZE (abfd); | |
2465 | ||
2466 | if (need_relocs) | |
2467 | { | |
2468 | mips_elf_output_dynamic_relocation | |
2469 | (abfd, sreloc, indx, | |
2470 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, | |
2471 | sgot->output_offset + sgot->output_section->vma + offset); | |
2472 | ||
2473 | if (indx) | |
2474 | mips_elf_output_dynamic_relocation | |
2475 | (abfd, sreloc, indx, | |
2476 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, | |
2477 | sgot->output_offset + sgot->output_section->vma + offset2); | |
2478 | else | |
2479 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2480 | sgot->contents + offset2); | |
2481 | } | |
2482 | else | |
2483 | { | |
2484 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2485 | sgot->contents + offset); | |
2486 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
2487 | sgot->contents + offset2); | |
2488 | } | |
2489 | ||
2490 | got_offset += 2 * MIPS_ELF_GOT_SIZE (abfd); | |
2491 | } | |
2492 | ||
2493 | /* Initial Exec model. */ | |
2494 | if (*tls_type_p & GOT_TLS_IE) | |
2495 | { | |
2496 | offset = got_offset; | |
2497 | ||
2498 | if (need_relocs) | |
2499 | { | |
2500 | if (indx == 0) | |
2501 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
2502 | sgot->contents + offset); | |
2503 | else | |
2504 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2505 | sgot->contents + offset); | |
2506 | ||
2507 | mips_elf_output_dynamic_relocation | |
2508 | (abfd, sreloc, indx, | |
2509 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, | |
2510 | sgot->output_offset + sgot->output_section->vma + offset); | |
2511 | } | |
2512 | else | |
2513 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
2514 | sgot->contents + offset); | |
2515 | } | |
2516 | ||
2517 | if (*tls_type_p & GOT_TLS_LDM) | |
2518 | { | |
2519 | /* The initial offset is zero, and the LD offsets will include the | |
2520 | bias by DTP_OFFSET. */ | |
2521 | MIPS_ELF_PUT_WORD (abfd, 0, | |
2522 | sgot->contents + got_offset | |
2523 | + MIPS_ELF_GOT_SIZE (abfd)); | |
2524 | ||
2525 | if (!info->shared) | |
2526 | MIPS_ELF_PUT_WORD (abfd, 1, | |
2527 | sgot->contents + got_offset); | |
2528 | else | |
2529 | mips_elf_output_dynamic_relocation | |
2530 | (abfd, sreloc, indx, | |
2531 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, | |
2532 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
2533 | } | |
2534 | ||
2535 | *tls_type_p |= GOT_TLS_DONE; | |
2536 | } | |
2537 | ||
2538 | /* Return the GOT index to use for a relocation of type R_TYPE against | |
2539 | a symbol accessed using TLS_TYPE models. The GOT entries for this | |
2540 | symbol in this GOT start at GOT_INDEX. This function initializes the | |
2541 | GOT entries and corresponding relocations. */ | |
2542 | ||
2543 | static bfd_vma | |
2544 | mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type, | |
2545 | int r_type, struct bfd_link_info *info, | |
2546 | struct mips_elf_link_hash_entry *h, bfd_vma symbol) | |
2547 | { | |
2548 | BFD_ASSERT (r_type == R_MIPS_TLS_GOTTPREL || r_type == R_MIPS_TLS_GD | |
2549 | || r_type == R_MIPS_TLS_LDM); | |
2550 | ||
2551 | mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol); | |
2552 | ||
2553 | if (r_type == R_MIPS_TLS_GOTTPREL) | |
2554 | { | |
2555 | BFD_ASSERT (*tls_type & GOT_TLS_IE); | |
2556 | if (*tls_type & GOT_TLS_GD) | |
2557 | return got_index + 2 * MIPS_ELF_GOT_SIZE (abfd); | |
2558 | else | |
2559 | return got_index; | |
2560 | } | |
2561 | ||
2562 | if (r_type == R_MIPS_TLS_GD) | |
2563 | { | |
2564 | BFD_ASSERT (*tls_type & GOT_TLS_GD); | |
2565 | return got_index; | |
2566 | } | |
2567 | ||
2568 | if (r_type == R_MIPS_TLS_LDM) | |
2569 | { | |
2570 | BFD_ASSERT (*tls_type & GOT_TLS_LDM); | |
2571 | return got_index; | |
2572 | } | |
2573 | ||
2574 | return got_index; | |
2575 | } | |
2576 | ||
0a44bf69 RS |
2577 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
2578 | for global symbol H. .got.plt comes before the GOT, so the offset | |
2579 | will be negative. */ | |
2580 | ||
2581 | static bfd_vma | |
2582 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
2583 | struct elf_link_hash_entry *h) | |
2584 | { | |
2585 | bfd_vma plt_index, got_address, got_value; | |
2586 | struct mips_elf_link_hash_table *htab; | |
2587 | ||
2588 | htab = mips_elf_hash_table (info); | |
2589 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2590 | ||
2591 | /* Calculate the index of the symbol's PLT entry. */ | |
2592 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
2593 | ||
2594 | /* Calculate the address of the associated .got.plt entry. */ | |
2595 | got_address = (htab->sgotplt->output_section->vma | |
2596 | + htab->sgotplt->output_offset | |
2597 | + plt_index * 4); | |
2598 | ||
2599 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
2600 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
2601 | + htab->root.hgot->root.u.def.section->output_offset | |
2602 | + htab->root.hgot->root.u.def.value); | |
2603 | ||
2604 | return got_address - got_value; | |
2605 | } | |
2606 | ||
5c18022e | 2607 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
2608 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
2609 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
2610 | offset can be found. */ | |
b49e97c9 TS |
2611 | |
2612 | static bfd_vma | |
9719ad41 | 2613 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 2614 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 2615 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 TS |
2616 | { |
2617 | asection *sgot; | |
2618 | struct mips_got_info *g; | |
b15e6682 | 2619 | struct mips_got_entry *entry; |
b49e97c9 TS |
2620 | |
2621 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
2622 | ||
0a44bf69 | 2623 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, g, sgot, |
5c18022e | 2624 | value, r_symndx, h, r_type); |
0f20cc35 | 2625 | if (!entry) |
b15e6682 | 2626 | return MINUS_ONE; |
0f20cc35 DJ |
2627 | |
2628 | if (TLS_RELOC_P (r_type)) | |
ead49a57 RS |
2629 | { |
2630 | if (entry->symndx == -1 && g->next == NULL) | |
2631 | /* A type (3) entry in the single-GOT case. We use the symbol's | |
2632 | hash table entry to track the index. */ | |
2633 | return mips_tls_got_index (abfd, h->tls_got_offset, &h->tls_type, | |
2634 | r_type, info, h, value); | |
2635 | else | |
2636 | return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type, | |
2637 | r_type, info, h, value); | |
2638 | } | |
0f20cc35 DJ |
2639 | else |
2640 | return entry->gotidx; | |
b49e97c9 TS |
2641 | } |
2642 | ||
2643 | /* Returns the GOT index for the global symbol indicated by H. */ | |
2644 | ||
2645 | static bfd_vma | |
0f20cc35 DJ |
2646 | mips_elf_global_got_index (bfd *abfd, bfd *ibfd, struct elf_link_hash_entry *h, |
2647 | int r_type, struct bfd_link_info *info) | |
b49e97c9 TS |
2648 | { |
2649 | bfd_vma index; | |
2650 | asection *sgot; | |
f4416af6 | 2651 | struct mips_got_info *g, *gg; |
d0c7ff07 | 2652 | long global_got_dynindx = 0; |
b49e97c9 | 2653 | |
f4416af6 AO |
2654 | gg = g = mips_elf_got_info (abfd, &sgot); |
2655 | if (g->bfd2got && ibfd) | |
2656 | { | |
2657 | struct mips_got_entry e, *p; | |
143d77c5 | 2658 | |
f4416af6 AO |
2659 | BFD_ASSERT (h->dynindx >= 0); |
2660 | ||
2661 | g = mips_elf_got_for_ibfd (g, ibfd); | |
0f20cc35 | 2662 | if (g->next != gg || TLS_RELOC_P (r_type)) |
f4416af6 AO |
2663 | { |
2664 | e.abfd = ibfd; | |
2665 | e.symndx = -1; | |
2666 | e.d.h = (struct mips_elf_link_hash_entry *)h; | |
0f20cc35 | 2667 | e.tls_type = 0; |
f4416af6 | 2668 | |
9719ad41 | 2669 | p = htab_find (g->got_entries, &e); |
f4416af6 AO |
2670 | |
2671 | BFD_ASSERT (p->gotidx > 0); | |
0f20cc35 DJ |
2672 | |
2673 | if (TLS_RELOC_P (r_type)) | |
2674 | { | |
2675 | bfd_vma value = MINUS_ONE; | |
2676 | if ((h->root.type == bfd_link_hash_defined | |
2677 | || h->root.type == bfd_link_hash_defweak) | |
2678 | && h->root.u.def.section->output_section) | |
2679 | value = (h->root.u.def.value | |
2680 | + h->root.u.def.section->output_offset | |
2681 | + h->root.u.def.section->output_section->vma); | |
2682 | ||
2683 | return mips_tls_got_index (abfd, p->gotidx, &p->tls_type, r_type, | |
2684 | info, e.d.h, value); | |
2685 | } | |
2686 | else | |
2687 | return p->gotidx; | |
f4416af6 AO |
2688 | } |
2689 | } | |
2690 | ||
2691 | if (gg->global_gotsym != NULL) | |
2692 | global_got_dynindx = gg->global_gotsym->dynindx; | |
b49e97c9 | 2693 | |
0f20cc35 DJ |
2694 | if (TLS_RELOC_P (r_type)) |
2695 | { | |
2696 | struct mips_elf_link_hash_entry *hm | |
2697 | = (struct mips_elf_link_hash_entry *) h; | |
2698 | bfd_vma value = MINUS_ONE; | |
2699 | ||
2700 | if ((h->root.type == bfd_link_hash_defined | |
2701 | || h->root.type == bfd_link_hash_defweak) | |
2702 | && h->root.u.def.section->output_section) | |
2703 | value = (h->root.u.def.value | |
2704 | + h->root.u.def.section->output_offset | |
2705 | + h->root.u.def.section->output_section->vma); | |
2706 | ||
2707 | index = mips_tls_got_index (abfd, hm->tls_got_offset, &hm->tls_type, | |
2708 | r_type, info, hm, value); | |
2709 | } | |
2710 | else | |
2711 | { | |
2712 | /* Once we determine the global GOT entry with the lowest dynamic | |
2713 | symbol table index, we must put all dynamic symbols with greater | |
2714 | indices into the GOT. That makes it easy to calculate the GOT | |
2715 | offset. */ | |
2716 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
2717 | index = ((h->dynindx - global_got_dynindx + g->local_gotno) | |
2718 | * MIPS_ELF_GOT_SIZE (abfd)); | |
2719 | } | |
eea6121a | 2720 | BFD_ASSERT (index < sgot->size); |
b49e97c9 TS |
2721 | |
2722 | return index; | |
2723 | } | |
2724 | ||
5c18022e RS |
2725 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
2726 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
2727 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
2728 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 2729 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
2730 | |
2731 | static bfd_vma | |
9719ad41 | 2732 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 2733 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 TS |
2734 | { |
2735 | asection *sgot; | |
2736 | struct mips_got_info *g; | |
0a44bf69 | 2737 | bfd_vma page, index; |
b15e6682 | 2738 | struct mips_got_entry *entry; |
b49e97c9 TS |
2739 | |
2740 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
2741 | ||
0a44bf69 RS |
2742 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
2743 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, g, sgot, | |
5c18022e | 2744 | page, 0, NULL, R_MIPS_GOT_PAGE); |
b49e97c9 | 2745 | |
b15e6682 AO |
2746 | if (!entry) |
2747 | return MINUS_ONE; | |
143d77c5 | 2748 | |
b15e6682 | 2749 | index = entry->gotidx; |
b49e97c9 TS |
2750 | |
2751 | if (offsetp) | |
f4416af6 | 2752 | *offsetp = value - entry->d.address; |
b49e97c9 TS |
2753 | |
2754 | return index; | |
2755 | } | |
2756 | ||
738e5348 | 2757 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
0a44bf69 RS |
2758 | EXTERNAL is true if the relocation was against a global symbol |
2759 | that has been forced local. */ | |
b49e97c9 TS |
2760 | |
2761 | static bfd_vma | |
9719ad41 | 2762 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 2763 | bfd_vma value, bfd_boolean external) |
b49e97c9 TS |
2764 | { |
2765 | asection *sgot; | |
2766 | struct mips_got_info *g; | |
b15e6682 | 2767 | struct mips_got_entry *entry; |
b49e97c9 | 2768 | |
0a44bf69 RS |
2769 | /* GOT16 relocations against local symbols are followed by a LO16 |
2770 | relocation; those against global symbols are not. Thus if the | |
2771 | symbol was originally local, the GOT16 relocation should load the | |
2772 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 2773 | if (! external) |
0a44bf69 | 2774 | value = mips_elf_high (value) << 16; |
b49e97c9 TS |
2775 | |
2776 | g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot); | |
2777 | ||
738e5348 RS |
2778 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
2779 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
2780 | same in all cases. */ | |
0a44bf69 | 2781 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, g, sgot, |
5c18022e | 2782 | value, 0, NULL, R_MIPS_GOT16); |
b15e6682 AO |
2783 | if (entry) |
2784 | return entry->gotidx; | |
2785 | else | |
2786 | return MINUS_ONE; | |
b49e97c9 TS |
2787 | } |
2788 | ||
2789 | /* Returns the offset for the entry at the INDEXth position | |
2790 | in the GOT. */ | |
2791 | ||
2792 | static bfd_vma | |
9719ad41 RS |
2793 | mips_elf_got_offset_from_index (bfd *dynobj, bfd *output_bfd, |
2794 | bfd *input_bfd, bfd_vma index) | |
b49e97c9 TS |
2795 | { |
2796 | asection *sgot; | |
2797 | bfd_vma gp; | |
f4416af6 | 2798 | struct mips_got_info *g; |
b49e97c9 | 2799 | |
f4416af6 AO |
2800 | g = mips_elf_got_info (dynobj, &sgot); |
2801 | gp = _bfd_get_gp_value (output_bfd) | |
2802 | + mips_elf_adjust_gp (output_bfd, g, input_bfd); | |
143d77c5 | 2803 | |
f4416af6 | 2804 | return sgot->output_section->vma + sgot->output_offset + index - gp; |
b49e97c9 TS |
2805 | } |
2806 | ||
0a44bf69 RS |
2807 | /* Create and return a local GOT entry for VALUE, which was calculated |
2808 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
2809 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
2810 | instead. */ | |
b49e97c9 | 2811 | |
b15e6682 | 2812 | static struct mips_got_entry * |
0a44bf69 RS |
2813 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
2814 | bfd *ibfd, struct mips_got_info *gg, | |
5c18022e RS |
2815 | asection *sgot, bfd_vma value, |
2816 | unsigned long r_symndx, | |
0f20cc35 DJ |
2817 | struct mips_elf_link_hash_entry *h, |
2818 | int r_type) | |
b49e97c9 | 2819 | { |
b15e6682 | 2820 | struct mips_got_entry entry, **loc; |
f4416af6 | 2821 | struct mips_got_info *g; |
0a44bf69 RS |
2822 | struct mips_elf_link_hash_table *htab; |
2823 | ||
2824 | htab = mips_elf_hash_table (info); | |
b15e6682 | 2825 | |
f4416af6 AO |
2826 | entry.abfd = NULL; |
2827 | entry.symndx = -1; | |
2828 | entry.d.address = value; | |
0f20cc35 | 2829 | entry.tls_type = 0; |
f4416af6 AO |
2830 | |
2831 | g = mips_elf_got_for_ibfd (gg, ibfd); | |
2832 | if (g == NULL) | |
2833 | { | |
2834 | g = mips_elf_got_for_ibfd (gg, abfd); | |
2835 | BFD_ASSERT (g != NULL); | |
2836 | } | |
b15e6682 | 2837 | |
0f20cc35 DJ |
2838 | /* We might have a symbol, H, if it has been forced local. Use the |
2839 | global entry then. It doesn't matter whether an entry is local | |
2840 | or global for TLS, since the dynamic linker does not | |
2841 | automatically relocate TLS GOT entries. */ | |
a008ac03 | 2842 | BFD_ASSERT (h == NULL || h->root.forced_local); |
0f20cc35 DJ |
2843 | if (TLS_RELOC_P (r_type)) |
2844 | { | |
2845 | struct mips_got_entry *p; | |
2846 | ||
2847 | entry.abfd = ibfd; | |
2848 | if (r_type == R_MIPS_TLS_LDM) | |
2849 | { | |
2850 | entry.tls_type = GOT_TLS_LDM; | |
2851 | entry.symndx = 0; | |
2852 | entry.d.addend = 0; | |
2853 | } | |
2854 | else if (h == NULL) | |
2855 | { | |
2856 | entry.symndx = r_symndx; | |
2857 | entry.d.addend = 0; | |
2858 | } | |
2859 | else | |
2860 | entry.d.h = h; | |
2861 | ||
2862 | p = (struct mips_got_entry *) | |
2863 | htab_find (g->got_entries, &entry); | |
2864 | ||
2865 | BFD_ASSERT (p); | |
2866 | return p; | |
2867 | } | |
2868 | ||
b15e6682 AO |
2869 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, |
2870 | INSERT); | |
2871 | if (*loc) | |
2872 | return *loc; | |
143d77c5 | 2873 | |
b15e6682 | 2874 | entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; |
0f20cc35 | 2875 | entry.tls_type = 0; |
b15e6682 AO |
2876 | |
2877 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
2878 | ||
2879 | if (! *loc) | |
2880 | return NULL; | |
143d77c5 | 2881 | |
b15e6682 AO |
2882 | memcpy (*loc, &entry, sizeof entry); |
2883 | ||
8275b357 | 2884 | if (g->assigned_gotno > g->local_gotno) |
b49e97c9 | 2885 | { |
f4416af6 | 2886 | (*loc)->gotidx = -1; |
b49e97c9 TS |
2887 | /* We didn't allocate enough space in the GOT. */ |
2888 | (*_bfd_error_handler) | |
2889 | (_("not enough GOT space for local GOT entries")); | |
2890 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 2891 | return NULL; |
b49e97c9 TS |
2892 | } |
2893 | ||
2894 | MIPS_ELF_PUT_WORD (abfd, value, | |
b15e6682 AO |
2895 | (sgot->contents + entry.gotidx)); |
2896 | ||
5c18022e | 2897 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
0a44bf69 RS |
2898 | if (htab->is_vxworks) |
2899 | { | |
2900 | Elf_Internal_Rela outrel; | |
5c18022e | 2901 | asection *s; |
0a44bf69 RS |
2902 | bfd_byte *loc; |
2903 | bfd_vma got_address; | |
0a44bf69 RS |
2904 | |
2905 | s = mips_elf_rel_dyn_section (info, FALSE); | |
0a44bf69 RS |
2906 | got_address = (sgot->output_section->vma |
2907 | + sgot->output_offset | |
2908 | + entry.gotidx); | |
2909 | ||
2910 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
2911 | outrel.r_offset = got_address; | |
5c18022e RS |
2912 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
2913 | outrel.r_addend = value; | |
0a44bf69 RS |
2914 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); |
2915 | } | |
2916 | ||
b15e6682 | 2917 | return *loc; |
b49e97c9 TS |
2918 | } |
2919 | ||
2920 | /* Sort the dynamic symbol table so that symbols that need GOT entries | |
2921 | appear towards the end. This reduces the amount of GOT space | |
2922 | required. MAX_LOCAL is used to set the number of local symbols | |
2923 | known to be in the dynamic symbol table. During | |
2924 | _bfd_mips_elf_size_dynamic_sections, this value is 1. Afterward, the | |
2925 | section symbols are added and the count is higher. */ | |
2926 | ||
b34976b6 | 2927 | static bfd_boolean |
9719ad41 | 2928 | mips_elf_sort_hash_table (struct bfd_link_info *info, unsigned long max_local) |
b49e97c9 TS |
2929 | { |
2930 | struct mips_elf_hash_sort_data hsd; | |
2931 | struct mips_got_info *g; | |
2932 | bfd *dynobj; | |
2933 | ||
2934 | dynobj = elf_hash_table (info)->dynobj; | |
2935 | ||
f4416af6 AO |
2936 | g = mips_elf_got_info (dynobj, NULL); |
2937 | ||
b49e97c9 | 2938 | hsd.low = NULL; |
143d77c5 | 2939 | hsd.max_unref_got_dynindx = |
f4416af6 AO |
2940 | hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount |
2941 | /* In the multi-got case, assigned_gotno of the master got_info | |
2942 | indicate the number of entries that aren't referenced in the | |
2943 | primary GOT, but that must have entries because there are | |
2944 | dynamic relocations that reference it. Since they aren't | |
2945 | referenced, we move them to the end of the GOT, so that they | |
2946 | don't prevent other entries that are referenced from getting | |
2947 | too large offsets. */ | |
2948 | - (g->next ? g->assigned_gotno : 0); | |
b49e97c9 TS |
2949 | hsd.max_non_got_dynindx = max_local; |
2950 | mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *) | |
2951 | elf_hash_table (info)), | |
2952 | mips_elf_sort_hash_table_f, | |
2953 | &hsd); | |
2954 | ||
2955 | /* There should have been enough room in the symbol table to | |
44c410de | 2956 | accommodate both the GOT and non-GOT symbols. */ |
b49e97c9 | 2957 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
f4416af6 AO |
2958 | BFD_ASSERT ((unsigned long)hsd.max_unref_got_dynindx |
2959 | <= elf_hash_table (info)->dynsymcount); | |
b49e97c9 TS |
2960 | |
2961 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
2962 | table index in the GOT. */ | |
b49e97c9 TS |
2963 | g->global_gotsym = hsd.low; |
2964 | ||
b34976b6 | 2965 | return TRUE; |
b49e97c9 TS |
2966 | } |
2967 | ||
2968 | /* If H needs a GOT entry, assign it the highest available dynamic | |
2969 | index. Otherwise, assign it the lowest available dynamic | |
2970 | index. */ | |
2971 | ||
b34976b6 | 2972 | static bfd_boolean |
9719ad41 | 2973 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2974 | { |
9719ad41 | 2975 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 TS |
2976 | |
2977 | if (h->root.root.type == bfd_link_hash_warning) | |
2978 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
2979 | ||
2980 | /* Symbols without dynamic symbol table entries aren't interesting | |
2981 | at all. */ | |
2982 | if (h->root.dynindx == -1) | |
b34976b6 | 2983 | return TRUE; |
b49e97c9 | 2984 | |
f4416af6 AO |
2985 | /* Global symbols that need GOT entries that are not explicitly |
2986 | referenced are marked with got offset 2. Those that are | |
2987 | referenced get a 1, and those that don't need GOT entries get | |
720199d6 DJ |
2988 | -1. Forced local symbols may also be marked with got offset 1, |
2989 | but are never given global GOT entries. */ | |
f4416af6 AO |
2990 | if (h->root.got.offset == 2) |
2991 | { | |
0f20cc35 DJ |
2992 | BFD_ASSERT (h->tls_type == GOT_NORMAL); |
2993 | ||
f4416af6 AO |
2994 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
2995 | hsd->low = (struct elf_link_hash_entry *) h; | |
2996 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
2997 | } | |
720199d6 | 2998 | else if (h->root.got.offset != 1 || h->forced_local) |
b49e97c9 TS |
2999 | h->root.dynindx = hsd->max_non_got_dynindx++; |
3000 | else | |
3001 | { | |
0f20cc35 DJ |
3002 | BFD_ASSERT (h->tls_type == GOT_NORMAL); |
3003 | ||
b49e97c9 TS |
3004 | h->root.dynindx = --hsd->min_got_dynindx; |
3005 | hsd->low = (struct elf_link_hash_entry *) h; | |
3006 | } | |
3007 | ||
b34976b6 | 3008 | return TRUE; |
b49e97c9 TS |
3009 | } |
3010 | ||
3011 | /* If H is a symbol that needs a global GOT entry, but has a dynamic | |
3012 | symbol table index lower than any we've seen to date, record it for | |
3013 | posterity. */ | |
3014 | ||
b34976b6 | 3015 | static bfd_boolean |
9719ad41 RS |
3016 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
3017 | bfd *abfd, struct bfd_link_info *info, | |
0f20cc35 DJ |
3018 | struct mips_got_info *g, |
3019 | unsigned char tls_flag) | |
b49e97c9 | 3020 | { |
f4416af6 AO |
3021 | struct mips_got_entry entry, **loc; |
3022 | ||
b49e97c9 TS |
3023 | /* A global symbol in the GOT must also be in the dynamic symbol |
3024 | table. */ | |
7c5fcef7 L |
3025 | if (h->dynindx == -1) |
3026 | { | |
3027 | switch (ELF_ST_VISIBILITY (h->other)) | |
3028 | { | |
3029 | case STV_INTERNAL: | |
3030 | case STV_HIDDEN: | |
b34976b6 | 3031 | _bfd_mips_elf_hide_symbol (info, h, TRUE); |
7c5fcef7 L |
3032 | break; |
3033 | } | |
c152c796 | 3034 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3035 | return FALSE; |
7c5fcef7 | 3036 | } |
b49e97c9 | 3037 | |
86324f90 EC |
3038 | /* Make sure we have a GOT to put this entry into. */ |
3039 | BFD_ASSERT (g != NULL); | |
3040 | ||
f4416af6 AO |
3041 | entry.abfd = abfd; |
3042 | entry.symndx = -1; | |
3043 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
0f20cc35 | 3044 | entry.tls_type = 0; |
f4416af6 AO |
3045 | |
3046 | loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry, | |
3047 | INSERT); | |
3048 | ||
b49e97c9 TS |
3049 | /* If we've already marked this entry as needing GOT space, we don't |
3050 | need to do it again. */ | |
f4416af6 | 3051 | if (*loc) |
0f20cc35 DJ |
3052 | { |
3053 | (*loc)->tls_type |= tls_flag; | |
3054 | return TRUE; | |
3055 | } | |
f4416af6 AO |
3056 | |
3057 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3058 | ||
3059 | if (! *loc) | |
3060 | return FALSE; | |
143d77c5 | 3061 | |
f4416af6 | 3062 | entry.gotidx = -1; |
0f20cc35 DJ |
3063 | entry.tls_type = tls_flag; |
3064 | ||
f4416af6 AO |
3065 | memcpy (*loc, &entry, sizeof entry); |
3066 | ||
b49e97c9 | 3067 | if (h->got.offset != MINUS_ONE) |
b34976b6 | 3068 | return TRUE; |
b49e97c9 | 3069 | |
0f20cc35 | 3070 | if (tls_flag == 0) |
8275b357 RS |
3071 | { |
3072 | /* By setting this to a value other than -1, we are indicating that | |
3073 | there needs to be a GOT entry for H. Avoid using zero, as the | |
3074 | generic ELF copy_indirect_symbol tests for <= 0. */ | |
3075 | h->got.offset = 1; | |
3076 | if (h->forced_local) | |
3077 | g->local_gotno++; | |
3078 | } | |
b49e97c9 | 3079 | |
b34976b6 | 3080 | return TRUE; |
b49e97c9 | 3081 | } |
f4416af6 AO |
3082 | |
3083 | /* Reserve space in G for a GOT entry containing the value of symbol | |
3084 | SYMNDX in input bfd ABDF, plus ADDEND. */ | |
3085 | ||
3086 | static bfd_boolean | |
9719ad41 | 3087 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
0f20cc35 DJ |
3088 | struct mips_got_info *g, |
3089 | unsigned char tls_flag) | |
f4416af6 AO |
3090 | { |
3091 | struct mips_got_entry entry, **loc; | |
3092 | ||
3093 | entry.abfd = abfd; | |
3094 | entry.symndx = symndx; | |
3095 | entry.d.addend = addend; | |
0f20cc35 | 3096 | entry.tls_type = tls_flag; |
f4416af6 AO |
3097 | loc = (struct mips_got_entry **) |
3098 | htab_find_slot (g->got_entries, &entry, INSERT); | |
3099 | ||
3100 | if (*loc) | |
0f20cc35 DJ |
3101 | { |
3102 | if (tls_flag == GOT_TLS_GD && !((*loc)->tls_type & GOT_TLS_GD)) | |
3103 | { | |
3104 | g->tls_gotno += 2; | |
3105 | (*loc)->tls_type |= tls_flag; | |
3106 | } | |
3107 | else if (tls_flag == GOT_TLS_IE && !((*loc)->tls_type & GOT_TLS_IE)) | |
3108 | { | |
3109 | g->tls_gotno += 1; | |
3110 | (*loc)->tls_type |= tls_flag; | |
3111 | } | |
3112 | return TRUE; | |
3113 | } | |
f4416af6 | 3114 | |
0f20cc35 DJ |
3115 | if (tls_flag != 0) |
3116 | { | |
3117 | entry.gotidx = -1; | |
3118 | entry.tls_type = tls_flag; | |
3119 | if (tls_flag == GOT_TLS_IE) | |
3120 | g->tls_gotno += 1; | |
3121 | else if (tls_flag == GOT_TLS_GD) | |
3122 | g->tls_gotno += 2; | |
3123 | else if (g->tls_ldm_offset == MINUS_ONE) | |
3124 | { | |
3125 | g->tls_ldm_offset = MINUS_TWO; | |
3126 | g->tls_gotno += 2; | |
3127 | } | |
3128 | } | |
3129 | else | |
3130 | { | |
3131 | entry.gotidx = g->local_gotno++; | |
3132 | entry.tls_type = 0; | |
3133 | } | |
f4416af6 AO |
3134 | |
3135 | *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry); | |
3136 | ||
3137 | if (! *loc) | |
3138 | return FALSE; | |
143d77c5 | 3139 | |
f4416af6 AO |
3140 | memcpy (*loc, &entry, sizeof entry); |
3141 | ||
3142 | return TRUE; | |
3143 | } | |
c224138d RS |
3144 | |
3145 | /* Return the maximum number of GOT page entries required for RANGE. */ | |
3146 | ||
3147 | static bfd_vma | |
3148 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
3149 | { | |
3150 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
3151 | } | |
3152 | ||
3a3b6725 DJ |
3153 | /* Record that ABFD has a page relocation against symbol SYMNDX and |
3154 | that ADDEND is the addend for that relocation. G is the GOT | |
3155 | information. This function creates an upper bound on the number of | |
3156 | GOT slots required; no attempt is made to combine references to | |
3157 | non-overridable global symbols across multiple input files. */ | |
c224138d RS |
3158 | |
3159 | static bfd_boolean | |
3160 | mips_elf_record_got_page_entry (bfd *abfd, long symndx, bfd_signed_vma addend, | |
3161 | struct mips_got_info *g) | |
3162 | { | |
3163 | struct mips_got_page_entry lookup, *entry; | |
3164 | struct mips_got_page_range **range_ptr, *range; | |
3165 | bfd_vma old_pages, new_pages; | |
3166 | void **loc; | |
3167 | ||
3168 | /* Find the mips_got_page_entry hash table entry for this symbol. */ | |
3169 | lookup.abfd = abfd; | |
3170 | lookup.symndx = symndx; | |
3171 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
3172 | if (loc == NULL) | |
3173 | return FALSE; | |
3174 | ||
3175 | /* Create a mips_got_page_entry if this is the first time we've | |
3176 | seen the symbol. */ | |
3177 | entry = (struct mips_got_page_entry *) *loc; | |
3178 | if (!entry) | |
3179 | { | |
3180 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
3181 | if (!entry) | |
3182 | return FALSE; | |
3183 | ||
3184 | entry->abfd = abfd; | |
3185 | entry->symndx = symndx; | |
3186 | entry->ranges = NULL; | |
3187 | entry->num_pages = 0; | |
3188 | *loc = entry; | |
3189 | } | |
3190 | ||
3191 | /* Skip over ranges whose maximum extent cannot share a page entry | |
3192 | with ADDEND. */ | |
3193 | range_ptr = &entry->ranges; | |
3194 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
3195 | range_ptr = &(*range_ptr)->next; | |
3196 | ||
3197 | /* If we scanned to the end of the list, or found a range whose | |
3198 | minimum extent cannot share a page entry with ADDEND, create | |
3199 | a new singleton range. */ | |
3200 | range = *range_ptr; | |
3201 | if (!range || addend < range->min_addend - 0xffff) | |
3202 | { | |
3203 | range = bfd_alloc (abfd, sizeof (*range)); | |
3204 | if (!range) | |
3205 | return FALSE; | |
3206 | ||
3207 | range->next = *range_ptr; | |
3208 | range->min_addend = addend; | |
3209 | range->max_addend = addend; | |
3210 | ||
3211 | *range_ptr = range; | |
3212 | entry->num_pages++; | |
3213 | g->page_gotno++; | |
3214 | return TRUE; | |
3215 | } | |
3216 | ||
3217 | /* Remember how many pages the old range contributed. */ | |
3218 | old_pages = mips_elf_pages_for_range (range); | |
3219 | ||
3220 | /* Update the ranges. */ | |
3221 | if (addend < range->min_addend) | |
3222 | range->min_addend = addend; | |
3223 | else if (addend > range->max_addend) | |
3224 | { | |
3225 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
3226 | { | |
3227 | old_pages += mips_elf_pages_for_range (range->next); | |
3228 | range->max_addend = range->next->max_addend; | |
3229 | range->next = range->next->next; | |
3230 | } | |
3231 | else | |
3232 | range->max_addend = addend; | |
3233 | } | |
3234 | ||
3235 | /* Record any change in the total estimate. */ | |
3236 | new_pages = mips_elf_pages_for_range (range); | |
3237 | if (old_pages != new_pages) | |
3238 | { | |
3239 | entry->num_pages += new_pages - old_pages; | |
3240 | g->page_gotno += new_pages - old_pages; | |
3241 | } | |
3242 | ||
3243 | return TRUE; | |
3244 | } | |
f4416af6 AO |
3245 | \f |
3246 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
3247 | ||
3248 | static hashval_t | |
9719ad41 | 3249 | mips_elf_bfd2got_entry_hash (const void *entry_) |
f4416af6 AO |
3250 | { |
3251 | const struct mips_elf_bfd2got_hash *entry | |
3252 | = (struct mips_elf_bfd2got_hash *)entry_; | |
3253 | ||
3254 | return entry->bfd->id; | |
3255 | } | |
3256 | ||
3257 | /* Check whether two hash entries have the same bfd. */ | |
3258 | ||
3259 | static int | |
9719ad41 | 3260 | mips_elf_bfd2got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3261 | { |
3262 | const struct mips_elf_bfd2got_hash *e1 | |
3263 | = (const struct mips_elf_bfd2got_hash *)entry1; | |
3264 | const struct mips_elf_bfd2got_hash *e2 | |
3265 | = (const struct mips_elf_bfd2got_hash *)entry2; | |
3266 | ||
3267 | return e1->bfd == e2->bfd; | |
3268 | } | |
3269 | ||
bad36eac | 3270 | /* In a multi-got link, determine the GOT to be used for IBFD. G must |
f4416af6 AO |
3271 | be the master GOT data. */ |
3272 | ||
3273 | static struct mips_got_info * | |
9719ad41 | 3274 | mips_elf_got_for_ibfd (struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
3275 | { |
3276 | struct mips_elf_bfd2got_hash e, *p; | |
3277 | ||
3278 | if (! g->bfd2got) | |
3279 | return g; | |
3280 | ||
3281 | e.bfd = ibfd; | |
9719ad41 | 3282 | p = htab_find (g->bfd2got, &e); |
f4416af6 AO |
3283 | return p ? p->g : NULL; |
3284 | } | |
3285 | ||
c224138d RS |
3286 | /* Use BFD2GOT to find ABFD's got entry, creating one if none exists. |
3287 | Return NULL if an error occured. */ | |
f4416af6 | 3288 | |
c224138d RS |
3289 | static struct mips_got_info * |
3290 | mips_elf_get_got_for_bfd (struct htab *bfd2got, bfd *output_bfd, | |
3291 | bfd *input_bfd) | |
f4416af6 | 3292 | { |
f4416af6 | 3293 | struct mips_elf_bfd2got_hash bfdgot_entry, *bfdgot; |
c224138d | 3294 | struct mips_got_info *g; |
f4416af6 | 3295 | void **bfdgotp; |
143d77c5 | 3296 | |
c224138d | 3297 | bfdgot_entry.bfd = input_bfd; |
f4416af6 | 3298 | bfdgotp = htab_find_slot (bfd2got, &bfdgot_entry, INSERT); |
c224138d | 3299 | bfdgot = (struct mips_elf_bfd2got_hash *) *bfdgotp; |
f4416af6 | 3300 | |
c224138d | 3301 | if (bfdgot == NULL) |
f4416af6 | 3302 | { |
c224138d RS |
3303 | bfdgot = ((struct mips_elf_bfd2got_hash *) |
3304 | bfd_alloc (output_bfd, sizeof (struct mips_elf_bfd2got_hash))); | |
f4416af6 | 3305 | if (bfdgot == NULL) |
c224138d | 3306 | return NULL; |
f4416af6 AO |
3307 | |
3308 | *bfdgotp = bfdgot; | |
3309 | ||
c224138d RS |
3310 | g = ((struct mips_got_info *) |
3311 | bfd_alloc (output_bfd, sizeof (struct mips_got_info))); | |
f4416af6 | 3312 | if (g == NULL) |
c224138d RS |
3313 | return NULL; |
3314 | ||
3315 | bfdgot->bfd = input_bfd; | |
3316 | bfdgot->g = g; | |
f4416af6 AO |
3317 | |
3318 | g->global_gotsym = NULL; | |
3319 | g->global_gotno = 0; | |
3320 | g->local_gotno = 0; | |
c224138d | 3321 | g->page_gotno = 0; |
f4416af6 | 3322 | g->assigned_gotno = -1; |
0f20cc35 DJ |
3323 | g->tls_gotno = 0; |
3324 | g->tls_assigned_gotno = 0; | |
3325 | g->tls_ldm_offset = MINUS_ONE; | |
f4416af6 | 3326 | g->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
9719ad41 | 3327 | mips_elf_multi_got_entry_eq, NULL); |
f4416af6 | 3328 | if (g->got_entries == NULL) |
c224138d RS |
3329 | return NULL; |
3330 | ||
3331 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
3332 | mips_got_page_entry_eq, NULL); | |
3333 | if (g->got_page_entries == NULL) | |
3334 | return NULL; | |
f4416af6 AO |
3335 | |
3336 | g->bfd2got = NULL; | |
3337 | g->next = NULL; | |
3338 | } | |
3339 | ||
c224138d RS |
3340 | return bfdgot->g; |
3341 | } | |
3342 | ||
3343 | /* A htab_traverse callback for the entries in the master got. | |
3344 | Create one separate got for each bfd that has entries in the global | |
3345 | got, such that we can tell how many local and global entries each | |
3346 | bfd requires. */ | |
3347 | ||
3348 | static int | |
3349 | mips_elf_make_got_per_bfd (void **entryp, void *p) | |
3350 | { | |
3351 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3352 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
3353 | struct mips_got_info *g; | |
3354 | ||
3355 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
3356 | if (g == NULL) | |
3357 | { | |
3358 | arg->obfd = NULL; | |
3359 | return 0; | |
3360 | } | |
3361 | ||
f4416af6 AO |
3362 | /* Insert the GOT entry in the bfd's got entry hash table. */ |
3363 | entryp = htab_find_slot (g->got_entries, entry, INSERT); | |
3364 | if (*entryp != NULL) | |
3365 | return 1; | |
143d77c5 | 3366 | |
f4416af6 AO |
3367 | *entryp = entry; |
3368 | ||
0f20cc35 DJ |
3369 | if (entry->tls_type) |
3370 | { | |
3371 | if (entry->tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) | |
3372 | g->tls_gotno += 2; | |
3373 | if (entry->tls_type & GOT_TLS_IE) | |
3374 | g->tls_gotno += 1; | |
3375 | } | |
3376 | else if (entry->symndx >= 0 || entry->d.h->forced_local) | |
f4416af6 AO |
3377 | ++g->local_gotno; |
3378 | else | |
3379 | ++g->global_gotno; | |
3380 | ||
3381 | return 1; | |
3382 | } | |
3383 | ||
c224138d RS |
3384 | /* A htab_traverse callback for the page entries in the master got. |
3385 | Associate each page entry with the bfd's got. */ | |
3386 | ||
3387 | static int | |
3388 | mips_elf_make_got_pages_per_bfd (void **entryp, void *p) | |
3389 | { | |
3390 | struct mips_got_page_entry *entry = (struct mips_got_page_entry *) *entryp; | |
3391 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *) p; | |
3392 | struct mips_got_info *g; | |
3393 | ||
3394 | g = mips_elf_get_got_for_bfd (arg->bfd2got, arg->obfd, entry->abfd); | |
3395 | if (g == NULL) | |
3396 | { | |
3397 | arg->obfd = NULL; | |
3398 | return 0; | |
3399 | } | |
3400 | ||
3401 | /* Insert the GOT entry in the bfd's got entry hash table. */ | |
3402 | entryp = htab_find_slot (g->got_page_entries, entry, INSERT); | |
3403 | if (*entryp != NULL) | |
3404 | return 1; | |
3405 | ||
3406 | *entryp = entry; | |
3407 | g->page_gotno += entry->num_pages; | |
3408 | return 1; | |
3409 | } | |
3410 | ||
3411 | /* Consider merging the got described by BFD2GOT with TO, using the | |
3412 | information given by ARG. Return -1 if this would lead to overflow, | |
3413 | 1 if they were merged successfully, and 0 if a merge failed due to | |
3414 | lack of memory. (These values are chosen so that nonnegative return | |
3415 | values can be returned by a htab_traverse callback.) */ | |
3416 | ||
3417 | static int | |
3418 | mips_elf_merge_got_with (struct mips_elf_bfd2got_hash *bfd2got, | |
3419 | struct mips_got_info *to, | |
3420 | struct mips_elf_got_per_bfd_arg *arg) | |
3421 | { | |
3422 | struct mips_got_info *from = bfd2got->g; | |
3423 | unsigned int estimate; | |
3424 | ||
3425 | /* Work out how many page entries we would need for the combined GOT. */ | |
3426 | estimate = arg->max_pages; | |
3427 | if (estimate >= from->page_gotno + to->page_gotno) | |
3428 | estimate = from->page_gotno + to->page_gotno; | |
3429 | ||
3430 | /* And conservatively estimate how many local, global and TLS entries | |
3431 | would be needed. */ | |
3432 | estimate += (from->local_gotno | |
3433 | + from->global_gotno | |
3434 | + from->tls_gotno | |
3435 | + to->local_gotno | |
3436 | + to->global_gotno | |
3437 | + to->tls_gotno); | |
3438 | ||
3439 | /* Bail out if the combined GOT might be too big. */ | |
3440 | if (estimate > arg->max_count) | |
3441 | return -1; | |
3442 | ||
3443 | /* Commit to the merge. Record that TO is now the bfd for this got. */ | |
3444 | bfd2got->g = to; | |
3445 | ||
3446 | /* Transfer the bfd's got information from FROM to TO. */ | |
3447 | htab_traverse (from->got_entries, mips_elf_make_got_per_bfd, arg); | |
3448 | if (arg->obfd == NULL) | |
3449 | return 0; | |
3450 | ||
3451 | htab_traverse (from->got_page_entries, mips_elf_make_got_pages_per_bfd, arg); | |
3452 | if (arg->obfd == NULL) | |
3453 | return 0; | |
3454 | ||
3455 | /* We don't have to worry about releasing memory of the actual | |
3456 | got entries, since they're all in the master got_entries hash | |
3457 | table anyway. */ | |
3458 | htab_delete (from->got_entries); | |
3459 | htab_delete (from->got_page_entries); | |
3460 | return 1; | |
3461 | } | |
3462 | ||
f4416af6 AO |
3463 | /* Attempt to merge gots of different input bfds. Try to use as much |
3464 | as possible of the primary got, since it doesn't require explicit | |
3465 | dynamic relocations, but don't use bfds that would reference global | |
3466 | symbols out of the addressable range. Failing the primary got, | |
3467 | attempt to merge with the current got, or finish the current got | |
3468 | and then make make the new got current. */ | |
3469 | ||
3470 | static int | |
9719ad41 | 3471 | mips_elf_merge_gots (void **bfd2got_, void *p) |
f4416af6 AO |
3472 | { |
3473 | struct mips_elf_bfd2got_hash *bfd2got | |
3474 | = (struct mips_elf_bfd2got_hash *)*bfd2got_; | |
3475 | struct mips_elf_got_per_bfd_arg *arg = (struct mips_elf_got_per_bfd_arg *)p; | |
c224138d RS |
3476 | struct mips_got_info *g; |
3477 | unsigned int estimate; | |
3478 | int result; | |
3479 | ||
3480 | g = bfd2got->g; | |
3481 | ||
3482 | /* Work out the number of page, local and TLS entries. */ | |
3483 | estimate = arg->max_pages; | |
3484 | if (estimate > g->page_gotno) | |
3485 | estimate = g->page_gotno; | |
3486 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
3487 | |
3488 | /* We place TLS GOT entries after both locals and globals. The globals | |
3489 | for the primary GOT may overflow the normal GOT size limit, so be | |
3490 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
3491 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 3492 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 3493 | |
c224138d | 3494 | if (estimate <= arg->max_count) |
f4416af6 | 3495 | { |
c224138d RS |
3496 | /* If we don't have a primary GOT, use it as |
3497 | a starting point for the primary GOT. */ | |
3498 | if (!arg->primary) | |
3499 | { | |
3500 | arg->primary = bfd2got->g; | |
3501 | return 1; | |
3502 | } | |
f4416af6 | 3503 | |
c224138d RS |
3504 | /* Try merging with the primary GOT. */ |
3505 | result = mips_elf_merge_got_with (bfd2got, arg->primary, arg); | |
3506 | if (result >= 0) | |
3507 | return result; | |
f4416af6 | 3508 | } |
c224138d | 3509 | |
f4416af6 | 3510 | /* If we can merge with the last-created got, do it. */ |
c224138d | 3511 | if (arg->current) |
f4416af6 | 3512 | { |
c224138d RS |
3513 | result = mips_elf_merge_got_with (bfd2got, arg->current, arg); |
3514 | if (result >= 0) | |
3515 | return result; | |
f4416af6 | 3516 | } |
c224138d | 3517 | |
f4416af6 AO |
3518 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
3519 | fits; if it turns out that it doesn't, we'll get relocation | |
3520 | overflows anyway. */ | |
c224138d RS |
3521 | g->next = arg->current; |
3522 | arg->current = g; | |
0f20cc35 DJ |
3523 | |
3524 | return 1; | |
3525 | } | |
3526 | ||
ead49a57 RS |
3527 | /* Set the TLS GOT index for the GOT entry in ENTRYP. ENTRYP's NEXT field |
3528 | is null iff there is just a single GOT. */ | |
0f20cc35 DJ |
3529 | |
3530 | static int | |
3531 | mips_elf_initialize_tls_index (void **entryp, void *p) | |
3532 | { | |
3533 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3534 | struct mips_got_info *g = p; | |
ead49a57 | 3535 | bfd_vma next_index; |
cbf2cba4 | 3536 | unsigned char tls_type; |
0f20cc35 DJ |
3537 | |
3538 | /* We're only interested in TLS symbols. */ | |
3539 | if (entry->tls_type == 0) | |
3540 | return 1; | |
3541 | ||
ead49a57 RS |
3542 | next_index = MIPS_ELF_GOT_SIZE (entry->abfd) * (long) g->tls_assigned_gotno; |
3543 | ||
3544 | if (entry->symndx == -1 && g->next == NULL) | |
0f20cc35 | 3545 | { |
ead49a57 RS |
3546 | /* A type (3) got entry in the single-GOT case. We use the symbol's |
3547 | hash table entry to track its index. */ | |
3548 | if (entry->d.h->tls_type & GOT_TLS_OFFSET_DONE) | |
3549 | return 1; | |
3550 | entry->d.h->tls_type |= GOT_TLS_OFFSET_DONE; | |
3551 | entry->d.h->tls_got_offset = next_index; | |
cbf2cba4 | 3552 | tls_type = entry->d.h->tls_type; |
ead49a57 RS |
3553 | } |
3554 | else | |
3555 | { | |
3556 | if (entry->tls_type & GOT_TLS_LDM) | |
0f20cc35 | 3557 | { |
ead49a57 RS |
3558 | /* There are separate mips_got_entry objects for each input bfd |
3559 | that requires an LDM entry. Make sure that all LDM entries in | |
3560 | a GOT resolve to the same index. */ | |
3561 | if (g->tls_ldm_offset != MINUS_TWO && g->tls_ldm_offset != MINUS_ONE) | |
4005427f | 3562 | { |
ead49a57 | 3563 | entry->gotidx = g->tls_ldm_offset; |
4005427f RS |
3564 | return 1; |
3565 | } | |
ead49a57 | 3566 | g->tls_ldm_offset = next_index; |
0f20cc35 | 3567 | } |
ead49a57 | 3568 | entry->gotidx = next_index; |
cbf2cba4 | 3569 | tls_type = entry->tls_type; |
f4416af6 AO |
3570 | } |
3571 | ||
ead49a57 | 3572 | /* Account for the entries we've just allocated. */ |
cbf2cba4 | 3573 | if (tls_type & (GOT_TLS_GD | GOT_TLS_LDM)) |
0f20cc35 | 3574 | g->tls_assigned_gotno += 2; |
cbf2cba4 | 3575 | if (tls_type & GOT_TLS_IE) |
0f20cc35 DJ |
3576 | g->tls_assigned_gotno += 1; |
3577 | ||
f4416af6 AO |
3578 | return 1; |
3579 | } | |
3580 | ||
3581 | /* If passed a NULL mips_got_info in the argument, set the marker used | |
3582 | to tell whether a global symbol needs a got entry (in the primary | |
3583 | got) to the given VALUE. | |
3584 | ||
3585 | If passed a pointer G to a mips_got_info in the argument (it must | |
3586 | not be the primary GOT), compute the offset from the beginning of | |
3587 | the (primary) GOT section to the entry in G corresponding to the | |
3588 | global symbol. G's assigned_gotno must contain the index of the | |
3589 | first available global GOT entry in G. VALUE must contain the size | |
3590 | of a GOT entry in bytes. For each global GOT entry that requires a | |
3591 | dynamic relocation, NEEDED_RELOCS is incremented, and the symbol is | |
4cc11e76 | 3592 | marked as not eligible for lazy resolution through a function |
f4416af6 AO |
3593 | stub. */ |
3594 | static int | |
9719ad41 | 3595 | mips_elf_set_global_got_offset (void **entryp, void *p) |
f4416af6 AO |
3596 | { |
3597 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3598 | struct mips_elf_set_global_got_offset_arg *arg | |
3599 | = (struct mips_elf_set_global_got_offset_arg *)p; | |
3600 | struct mips_got_info *g = arg->g; | |
3601 | ||
0f20cc35 DJ |
3602 | if (g && entry->tls_type != GOT_NORMAL) |
3603 | arg->needed_relocs += | |
3604 | mips_tls_got_relocs (arg->info, entry->tls_type, | |
3605 | entry->symndx == -1 ? &entry->d.h->root : NULL); | |
3606 | ||
f4416af6 | 3607 | if (entry->abfd != NULL && entry->symndx == -1 |
0f20cc35 | 3608 | && entry->d.h->root.dynindx != -1 |
720199d6 | 3609 | && !entry->d.h->forced_local |
0f20cc35 | 3610 | && entry->d.h->tls_type == GOT_NORMAL) |
f4416af6 AO |
3611 | { |
3612 | if (g) | |
3613 | { | |
3614 | BFD_ASSERT (g->global_gotsym == NULL); | |
3615 | ||
3616 | entry->gotidx = arg->value * (long) g->assigned_gotno++; | |
f4416af6 AO |
3617 | if (arg->info->shared |
3618 | || (elf_hash_table (arg->info)->dynamic_sections_created | |
f5385ebf AM |
3619 | && entry->d.h->root.def_dynamic |
3620 | && !entry->d.h->root.def_regular)) | |
f4416af6 AO |
3621 | ++arg->needed_relocs; |
3622 | } | |
3623 | else | |
3624 | entry->d.h->root.got.offset = arg->value; | |
3625 | } | |
3626 | ||
3627 | return 1; | |
3628 | } | |
3629 | ||
0626d451 RS |
3630 | /* Mark any global symbols referenced in the GOT we are iterating over |
3631 | as inelligible for lazy resolution stubs. */ | |
3632 | static int | |
9719ad41 | 3633 | mips_elf_set_no_stub (void **entryp, void *p ATTRIBUTE_UNUSED) |
0626d451 RS |
3634 | { |
3635 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3636 | ||
3637 | if (entry->abfd != NULL | |
3638 | && entry->symndx == -1 | |
3639 | && entry->d.h->root.dynindx != -1) | |
3640 | entry->d.h->no_fn_stub = TRUE; | |
3641 | ||
3642 | return 1; | |
3643 | } | |
3644 | ||
f4416af6 AO |
3645 | /* Follow indirect and warning hash entries so that each got entry |
3646 | points to the final symbol definition. P must point to a pointer | |
3647 | to the hash table we're traversing. Since this traversal may | |
3648 | modify the hash table, we set this pointer to NULL to indicate | |
3649 | we've made a potentially-destructive change to the hash table, so | |
3650 | the traversal must be restarted. */ | |
3651 | static int | |
9719ad41 | 3652 | mips_elf_resolve_final_got_entry (void **entryp, void *p) |
f4416af6 AO |
3653 | { |
3654 | struct mips_got_entry *entry = (struct mips_got_entry *)*entryp; | |
3655 | htab_t got_entries = *(htab_t *)p; | |
3656 | ||
3657 | if (entry->abfd != NULL && entry->symndx == -1) | |
3658 | { | |
3659 | struct mips_elf_link_hash_entry *h = entry->d.h; | |
3660 | ||
3661 | while (h->root.root.type == bfd_link_hash_indirect | |
3662 | || h->root.root.type == bfd_link_hash_warning) | |
3663 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
3664 | ||
3665 | if (entry->d.h == h) | |
3666 | return 1; | |
143d77c5 | 3667 | |
f4416af6 AO |
3668 | entry->d.h = h; |
3669 | ||
3670 | /* If we can't find this entry with the new bfd hash, re-insert | |
3671 | it, and get the traversal restarted. */ | |
3672 | if (! htab_find (got_entries, entry)) | |
3673 | { | |
3674 | htab_clear_slot (got_entries, entryp); | |
3675 | entryp = htab_find_slot (got_entries, entry, INSERT); | |
3676 | if (! *entryp) | |
3677 | *entryp = entry; | |
3678 | /* Abort the traversal, since the whole table may have | |
3679 | moved, and leave it up to the parent to restart the | |
3680 | process. */ | |
3681 | *(htab_t *)p = NULL; | |
3682 | return 0; | |
3683 | } | |
3684 | /* We might want to decrement the global_gotno count, but it's | |
3685 | either too early or too late for that at this point. */ | |
3686 | } | |
143d77c5 | 3687 | |
f4416af6 AO |
3688 | return 1; |
3689 | } | |
3690 | ||
3691 | /* Turn indirect got entries in a got_entries table into their final | |
3692 | locations. */ | |
3693 | static void | |
9719ad41 | 3694 | mips_elf_resolve_final_got_entries (struct mips_got_info *g) |
f4416af6 AO |
3695 | { |
3696 | htab_t got_entries; | |
3697 | ||
3698 | do | |
3699 | { | |
3700 | got_entries = g->got_entries; | |
3701 | ||
3702 | htab_traverse (got_entries, | |
3703 | mips_elf_resolve_final_got_entry, | |
3704 | &got_entries); | |
3705 | } | |
3706 | while (got_entries == NULL); | |
3707 | } | |
3708 | ||
3709 | /* Return the offset of an input bfd IBFD's GOT from the beginning of | |
3710 | the primary GOT. */ | |
3711 | static bfd_vma | |
9719ad41 | 3712 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 AO |
3713 | { |
3714 | if (g->bfd2got == NULL) | |
3715 | return 0; | |
3716 | ||
3717 | g = mips_elf_got_for_ibfd (g, ibfd); | |
3718 | if (! g) | |
3719 | return 0; | |
3720 | ||
3721 | BFD_ASSERT (g->next); | |
3722 | ||
3723 | g = g->next; | |
143d77c5 | 3724 | |
0f20cc35 DJ |
3725 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
3726 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
3727 | } |
3728 | ||
3729 | /* Turn a single GOT that is too big for 16-bit addressing into | |
3730 | a sequence of GOTs, each one 16-bit addressable. */ | |
3731 | ||
3732 | static bfd_boolean | |
9719ad41 RS |
3733 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
3734 | struct mips_got_info *g, asection *got, | |
3735 | bfd_size_type pages) | |
f4416af6 AO |
3736 | { |
3737 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; | |
3738 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
3739 | struct mips_got_info *gg; | |
3740 | unsigned int assign; | |
3741 | ||
3742 | g->bfd2got = htab_try_create (1, mips_elf_bfd2got_entry_hash, | |
9719ad41 | 3743 | mips_elf_bfd2got_entry_eq, NULL); |
f4416af6 AO |
3744 | if (g->bfd2got == NULL) |
3745 | return FALSE; | |
3746 | ||
3747 | got_per_bfd_arg.bfd2got = g->bfd2got; | |
3748 | got_per_bfd_arg.obfd = abfd; | |
3749 | got_per_bfd_arg.info = info; | |
3750 | ||
3751 | /* Count how many GOT entries each input bfd requires, creating a | |
3752 | map from bfd to got info while at that. */ | |
f4416af6 AO |
3753 | htab_traverse (g->got_entries, mips_elf_make_got_per_bfd, &got_per_bfd_arg); |
3754 | if (got_per_bfd_arg.obfd == NULL) | |
3755 | return FALSE; | |
3756 | ||
c224138d RS |
3757 | /* Also count how many page entries each input bfd requires. */ |
3758 | htab_traverse (g->got_page_entries, mips_elf_make_got_pages_per_bfd, | |
3759 | &got_per_bfd_arg); | |
3760 | if (got_per_bfd_arg.obfd == NULL) | |
3761 | return FALSE; | |
3762 | ||
f4416af6 AO |
3763 | got_per_bfd_arg.current = NULL; |
3764 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 3765 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 3766 | / MIPS_ELF_GOT_SIZE (abfd)) |
c224138d RS |
3767 | - MIPS_RESERVED_GOTNO (info)); |
3768 | got_per_bfd_arg.max_pages = pages; | |
0f20cc35 DJ |
3769 | /* The number of globals that will be included in the primary GOT. |
3770 | See the calls to mips_elf_set_global_got_offset below for more | |
3771 | information. */ | |
3772 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
3773 | |
3774 | /* Try to merge the GOTs of input bfds together, as long as they | |
3775 | don't seem to exceed the maximum GOT size, choosing one of them | |
3776 | to be the primary GOT. */ | |
3777 | htab_traverse (g->bfd2got, mips_elf_merge_gots, &got_per_bfd_arg); | |
3778 | if (got_per_bfd_arg.obfd == NULL) | |
3779 | return FALSE; | |
3780 | ||
0f20cc35 | 3781 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 AO |
3782 | if (got_per_bfd_arg.primary == NULL) |
3783 | { | |
3784 | g->next = (struct mips_got_info *) | |
3785 | bfd_alloc (abfd, sizeof (struct mips_got_info)); | |
3786 | if (g->next == NULL) | |
3787 | return FALSE; | |
3788 | ||
3789 | g->next->global_gotsym = NULL; | |
3790 | g->next->global_gotno = 0; | |
3791 | g->next->local_gotno = 0; | |
c224138d | 3792 | g->next->page_gotno = 0; |
0f20cc35 | 3793 | g->next->tls_gotno = 0; |
f4416af6 | 3794 | g->next->assigned_gotno = 0; |
0f20cc35 DJ |
3795 | g->next->tls_assigned_gotno = 0; |
3796 | g->next->tls_ldm_offset = MINUS_ONE; | |
f4416af6 AO |
3797 | g->next->got_entries = htab_try_create (1, mips_elf_multi_got_entry_hash, |
3798 | mips_elf_multi_got_entry_eq, | |
9719ad41 | 3799 | NULL); |
f4416af6 AO |
3800 | if (g->next->got_entries == NULL) |
3801 | return FALSE; | |
c224138d RS |
3802 | g->next->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
3803 | mips_got_page_entry_eq, | |
3804 | NULL); | |
3805 | if (g->next->got_page_entries == NULL) | |
3806 | return FALSE; | |
f4416af6 AO |
3807 | g->next->bfd2got = NULL; |
3808 | } | |
3809 | else | |
3810 | g->next = got_per_bfd_arg.primary; | |
3811 | g->next->next = got_per_bfd_arg.current; | |
3812 | ||
3813 | /* GG is now the master GOT, and G is the primary GOT. */ | |
3814 | gg = g; | |
3815 | g = g->next; | |
3816 | ||
3817 | /* Map the output bfd to the primary got. That's what we're going | |
3818 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
3819 | didn't mark in check_relocs, and we want a quick way to find it. | |
3820 | We can't just use gg->next because we're going to reverse the | |
3821 | list. */ | |
3822 | { | |
3823 | struct mips_elf_bfd2got_hash *bfdgot; | |
3824 | void **bfdgotp; | |
143d77c5 | 3825 | |
f4416af6 AO |
3826 | bfdgot = (struct mips_elf_bfd2got_hash *)bfd_alloc |
3827 | (abfd, sizeof (struct mips_elf_bfd2got_hash)); | |
3828 | ||
3829 | if (bfdgot == NULL) | |
3830 | return FALSE; | |
3831 | ||
3832 | bfdgot->bfd = abfd; | |
3833 | bfdgot->g = g; | |
3834 | bfdgotp = htab_find_slot (gg->bfd2got, bfdgot, INSERT); | |
3835 | ||
3836 | BFD_ASSERT (*bfdgotp == NULL); | |
3837 | *bfdgotp = bfdgot; | |
3838 | } | |
3839 | ||
3840 | /* The IRIX dynamic linker requires every symbol that is referenced | |
3841 | in a dynamic relocation to be present in the primary GOT, so | |
3842 | arrange for them to appear after those that are actually | |
3843 | referenced. | |
3844 | ||
3845 | GNU/Linux could very well do without it, but it would slow down | |
3846 | the dynamic linker, since it would have to resolve every dynamic | |
3847 | symbol referenced in other GOTs more than once, without help from | |
3848 | the cache. Also, knowing that every external symbol has a GOT | |
3849 | helps speed up the resolution of local symbols too, so GNU/Linux | |
3850 | follows IRIX's practice. | |
143d77c5 | 3851 | |
f4416af6 AO |
3852 | The number 2 is used by mips_elf_sort_hash_table_f to count |
3853 | global GOT symbols that are unreferenced in the primary GOT, with | |
3854 | an initial dynamic index computed from gg->assigned_gotno, where | |
3855 | the number of unreferenced global entries in the primary GOT is | |
3856 | preserved. */ | |
3857 | if (1) | |
3858 | { | |
3859 | gg->assigned_gotno = gg->global_gotno - g->global_gotno; | |
3860 | g->global_gotno = gg->global_gotno; | |
3861 | set_got_offset_arg.value = 2; | |
3862 | } | |
3863 | else | |
3864 | { | |
3865 | /* This could be used for dynamic linkers that don't optimize | |
3866 | symbol resolution while applying relocations so as to use | |
3867 | primary GOT entries or assuming the symbol is locally-defined. | |
3868 | With this code, we assign lower dynamic indices to global | |
3869 | symbols that are not referenced in the primary GOT, so that | |
3870 | their entries can be omitted. */ | |
3871 | gg->assigned_gotno = 0; | |
3872 | set_got_offset_arg.value = -1; | |
3873 | } | |
3874 | ||
3875 | /* Reorder dynamic symbols as described above (which behavior | |
3876 | depends on the setting of VALUE). */ | |
3877 | set_got_offset_arg.g = NULL; | |
3878 | htab_traverse (gg->got_entries, mips_elf_set_global_got_offset, | |
3879 | &set_got_offset_arg); | |
3880 | set_got_offset_arg.value = 1; | |
3881 | htab_traverse (g->got_entries, mips_elf_set_global_got_offset, | |
3882 | &set_got_offset_arg); | |
3883 | if (! mips_elf_sort_hash_table (info, 1)) | |
3884 | return FALSE; | |
3885 | ||
3886 | /* Now go through the GOTs assigning them offset ranges. | |
3887 | [assigned_gotno, local_gotno[ will be set to the range of local | |
3888 | entries in each GOT. We can then compute the end of a GOT by | |
3889 | adding local_gotno to global_gotno. We reverse the list and make | |
3890 | it circular since then we'll be able to quickly compute the | |
3891 | beginning of a GOT, by computing the end of its predecessor. To | |
3892 | avoid special cases for the primary GOT, while still preserving | |
3893 | assertions that are valid for both single- and multi-got links, | |
3894 | we arrange for the main got struct to have the right number of | |
3895 | global entries, but set its local_gotno such that the initial | |
3896 | offset of the primary GOT is zero. Remember that the primary GOT | |
3897 | will become the last item in the circular linked list, so it | |
3898 | points back to the master GOT. */ | |
3899 | gg->local_gotno = -g->global_gotno; | |
3900 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 3901 | gg->tls_gotno = 0; |
f4416af6 AO |
3902 | assign = 0; |
3903 | gg->next = gg; | |
3904 | ||
3905 | do | |
3906 | { | |
3907 | struct mips_got_info *gn; | |
3908 | ||
0a44bf69 | 3909 | assign += MIPS_RESERVED_GOTNO (info); |
f4416af6 | 3910 | g->assigned_gotno = assign; |
c224138d RS |
3911 | g->local_gotno += assign; |
3912 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
0f20cc35 DJ |
3913 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
3914 | ||
ead49a57 RS |
3915 | /* Take g out of the direct list, and push it onto the reversed |
3916 | list that gg points to. g->next is guaranteed to be nonnull after | |
3917 | this operation, as required by mips_elf_initialize_tls_index. */ | |
3918 | gn = g->next; | |
3919 | g->next = gg->next; | |
3920 | gg->next = g; | |
3921 | ||
0f20cc35 DJ |
3922 | /* Set up any TLS entries. We always place the TLS entries after |
3923 | all non-TLS entries. */ | |
3924 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
3925 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
f4416af6 | 3926 | |
ead49a57 | 3927 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 3928 | g = gn; |
0626d451 RS |
3929 | |
3930 | /* Mark global symbols in every non-primary GOT as ineligible for | |
3931 | stubs. */ | |
3932 | if (g) | |
3933 | htab_traverse (g->got_entries, mips_elf_set_no_stub, NULL); | |
f4416af6 AO |
3934 | } |
3935 | while (g); | |
3936 | ||
eea6121a | 3937 | got->size = (gg->next->local_gotno |
0f20cc35 DJ |
3938 | + gg->next->global_gotno |
3939 | + gg->next->tls_gotno) * MIPS_ELF_GOT_SIZE (abfd); | |
143d77c5 | 3940 | |
f4416af6 AO |
3941 | return TRUE; |
3942 | } | |
143d77c5 | 3943 | |
b49e97c9 TS |
3944 | \f |
3945 | /* Returns the first relocation of type r_type found, beginning with | |
3946 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
3947 | ||
3948 | static const Elf_Internal_Rela * | |
9719ad41 RS |
3949 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
3950 | const Elf_Internal_Rela *relocation, | |
3951 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 3952 | { |
c000e262 TS |
3953 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
3954 | ||
b49e97c9 TS |
3955 | while (relocation < relend) |
3956 | { | |
c000e262 TS |
3957 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
3958 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
3959 | return relocation; |
3960 | ||
3961 | ++relocation; | |
3962 | } | |
3963 | ||
3964 | /* We didn't find it. */ | |
b49e97c9 TS |
3965 | return NULL; |
3966 | } | |
3967 | ||
3968 | /* Return whether a relocation is against a local symbol. */ | |
3969 | ||
b34976b6 | 3970 | static bfd_boolean |
9719ad41 RS |
3971 | mips_elf_local_relocation_p (bfd *input_bfd, |
3972 | const Elf_Internal_Rela *relocation, | |
3973 | asection **local_sections, | |
3974 | bfd_boolean check_forced) | |
b49e97c9 TS |
3975 | { |
3976 | unsigned long r_symndx; | |
3977 | Elf_Internal_Shdr *symtab_hdr; | |
3978 | struct mips_elf_link_hash_entry *h; | |
3979 | size_t extsymoff; | |
3980 | ||
3981 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
3982 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3983 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
3984 | ||
3985 | if (r_symndx < extsymoff) | |
b34976b6 | 3986 | return TRUE; |
b49e97c9 | 3987 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
b34976b6 | 3988 | return TRUE; |
b49e97c9 TS |
3989 | |
3990 | if (check_forced) | |
3991 | { | |
3992 | /* Look up the hash table to check whether the symbol | |
3993 | was forced local. */ | |
3994 | h = (struct mips_elf_link_hash_entry *) | |
3995 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
3996 | /* Find the real hash-table entry for this symbol. */ | |
3997 | while (h->root.root.type == bfd_link_hash_indirect | |
3998 | || h->root.root.type == bfd_link_hash_warning) | |
3999 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
f5385ebf | 4000 | if (h->root.forced_local) |
b34976b6 | 4001 | return TRUE; |
b49e97c9 TS |
4002 | } |
4003 | ||
b34976b6 | 4004 | return FALSE; |
b49e97c9 TS |
4005 | } |
4006 | \f | |
4007 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
4008 | ||
a7ebbfdf | 4009 | bfd_vma |
9719ad41 | 4010 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
4011 | { |
4012 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
4013 | /* VALUE is negative. */ | |
4014 | value |= ((bfd_vma) - 1) << bits; | |
4015 | ||
4016 | return value; | |
4017 | } | |
4018 | ||
4019 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 4020 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
4021 | BITS. */ |
4022 | ||
b34976b6 | 4023 | static bfd_boolean |
9719ad41 | 4024 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
4025 | { |
4026 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
4027 | ||
4028 | if (svalue > (1 << (bits - 1)) - 1) | |
4029 | /* The value is too big. */ | |
b34976b6 | 4030 | return TRUE; |
b49e97c9 TS |
4031 | else if (svalue < -(1 << (bits - 1))) |
4032 | /* The value is too small. */ | |
b34976b6 | 4033 | return TRUE; |
b49e97c9 TS |
4034 | |
4035 | /* All is well. */ | |
b34976b6 | 4036 | return FALSE; |
b49e97c9 TS |
4037 | } |
4038 | ||
4039 | /* Calculate the %high function. */ | |
4040 | ||
4041 | static bfd_vma | |
9719ad41 | 4042 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
4043 | { |
4044 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
4045 | } | |
4046 | ||
4047 | /* Calculate the %higher function. */ | |
4048 | ||
4049 | static bfd_vma | |
9719ad41 | 4050 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4051 | { |
4052 | #ifdef BFD64 | |
4053 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
4054 | #else | |
4055 | abort (); | |
c5ae1840 | 4056 | return MINUS_ONE; |
b49e97c9 TS |
4057 | #endif |
4058 | } | |
4059 | ||
4060 | /* Calculate the %highest function. */ | |
4061 | ||
4062 | static bfd_vma | |
9719ad41 | 4063 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
4064 | { |
4065 | #ifdef BFD64 | |
b15e6682 | 4066 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
4067 | #else |
4068 | abort (); | |
c5ae1840 | 4069 | return MINUS_ONE; |
b49e97c9 TS |
4070 | #endif |
4071 | } | |
4072 | \f | |
4073 | /* Create the .compact_rel section. */ | |
4074 | ||
b34976b6 | 4075 | static bfd_boolean |
9719ad41 RS |
4076 | mips_elf_create_compact_rel_section |
4077 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
4078 | { |
4079 | flagword flags; | |
4080 | register asection *s; | |
4081 | ||
4082 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
4083 | { | |
4084 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
4085 | | SEC_READONLY); | |
4086 | ||
3496cb2a | 4087 | s = bfd_make_section_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 4088 | if (s == NULL |
b49e97c9 TS |
4089 | || ! bfd_set_section_alignment (abfd, s, |
4090 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 4091 | return FALSE; |
b49e97c9 | 4092 | |
eea6121a | 4093 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
4094 | } |
4095 | ||
b34976b6 | 4096 | return TRUE; |
b49e97c9 TS |
4097 | } |
4098 | ||
4099 | /* Create the .got section to hold the global offset table. */ | |
4100 | ||
b34976b6 | 4101 | static bfd_boolean |
9719ad41 RS |
4102 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info, |
4103 | bfd_boolean maybe_exclude) | |
b49e97c9 TS |
4104 | { |
4105 | flagword flags; | |
4106 | register asection *s; | |
4107 | struct elf_link_hash_entry *h; | |
14a793b2 | 4108 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
4109 | struct mips_got_info *g; |
4110 | bfd_size_type amt; | |
0a44bf69 RS |
4111 | struct mips_elf_link_hash_table *htab; |
4112 | ||
4113 | htab = mips_elf_hash_table (info); | |
b49e97c9 TS |
4114 | |
4115 | /* This function may be called more than once. */ | |
f4416af6 AO |
4116 | s = mips_elf_got_section (abfd, TRUE); |
4117 | if (s) | |
4118 | { | |
4119 | if (! maybe_exclude) | |
4120 | s->flags &= ~SEC_EXCLUDE; | |
4121 | return TRUE; | |
4122 | } | |
b49e97c9 TS |
4123 | |
4124 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4125 | | SEC_LINKER_CREATED); | |
4126 | ||
f4416af6 AO |
4127 | if (maybe_exclude) |
4128 | flags |= SEC_EXCLUDE; | |
4129 | ||
72b4917c TS |
4130 | /* We have to use an alignment of 2**4 here because this is hardcoded |
4131 | in the function stub generation and in the linker script. */ | |
3496cb2a | 4132 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
b49e97c9 | 4133 | if (s == NULL |
72b4917c | 4134 | || ! bfd_set_section_alignment (abfd, s, 4)) |
b34976b6 | 4135 | return FALSE; |
b49e97c9 TS |
4136 | |
4137 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
4138 | linker script because we don't want to define the symbol if we | |
4139 | are not creating a global offset table. */ | |
14a793b2 | 4140 | bh = NULL; |
b49e97c9 TS |
4141 | if (! (_bfd_generic_link_add_one_symbol |
4142 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
9719ad41 | 4143 | 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 4144 | return FALSE; |
14a793b2 AM |
4145 | |
4146 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
4147 | h->non_elf = 0; |
4148 | h->def_regular = 1; | |
b49e97c9 | 4149 | h->type = STT_OBJECT; |
d329bcd1 | 4150 | elf_hash_table (info)->hgot = h; |
b49e97c9 TS |
4151 | |
4152 | if (info->shared | |
c152c796 | 4153 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 4154 | return FALSE; |
b49e97c9 | 4155 | |
b49e97c9 | 4156 | amt = sizeof (struct mips_got_info); |
9719ad41 | 4157 | g = bfd_alloc (abfd, amt); |
b49e97c9 | 4158 | if (g == NULL) |
b34976b6 | 4159 | return FALSE; |
b49e97c9 | 4160 | g->global_gotsym = NULL; |
e3d54347 | 4161 | g->global_gotno = 0; |
0f20cc35 | 4162 | g->tls_gotno = 0; |
0a44bf69 | 4163 | g->local_gotno = MIPS_RESERVED_GOTNO (info); |
c224138d | 4164 | g->page_gotno = 0; |
0a44bf69 | 4165 | g->assigned_gotno = MIPS_RESERVED_GOTNO (info); |
f4416af6 AO |
4166 | g->bfd2got = NULL; |
4167 | g->next = NULL; | |
0f20cc35 | 4168 | g->tls_ldm_offset = MINUS_ONE; |
b15e6682 | 4169 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
9719ad41 | 4170 | mips_elf_got_entry_eq, NULL); |
b15e6682 AO |
4171 | if (g->got_entries == NULL) |
4172 | return FALSE; | |
c224138d RS |
4173 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, |
4174 | mips_got_page_entry_eq, NULL); | |
4175 | if (g->got_page_entries == NULL) | |
4176 | return FALSE; | |
f0abc2a1 AM |
4177 | mips_elf_section_data (s)->u.got_info = g; |
4178 | mips_elf_section_data (s)->elf.this_hdr.sh_flags | |
b49e97c9 TS |
4179 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
4180 | ||
0a44bf69 RS |
4181 | /* VxWorks also needs a .got.plt section. */ |
4182 | if (htab->is_vxworks) | |
4183 | { | |
4184 | s = bfd_make_section_with_flags (abfd, ".got.plt", | |
4185 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4186 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4187 | if (s == NULL || !bfd_set_section_alignment (abfd, s, 4)) | |
4188 | return FALSE; | |
4189 | ||
4190 | htab->sgotplt = s; | |
4191 | } | |
b34976b6 | 4192 | return TRUE; |
b49e97c9 | 4193 | } |
b49e97c9 | 4194 | \f |
0a44bf69 RS |
4195 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
4196 | __GOTT_INDEX__ symbols. These symbols are only special for | |
4197 | shared objects; they are not used in executables. */ | |
4198 | ||
4199 | static bfd_boolean | |
4200 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) | |
4201 | { | |
4202 | return (mips_elf_hash_table (info)->is_vxworks | |
4203 | && info->shared | |
4204 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 | |
4205 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
4206 | } | |
4207 | \f | |
b49e97c9 TS |
4208 | /* Calculate the value produced by the RELOCATION (which comes from |
4209 | the INPUT_BFD). The ADDEND is the addend to use for this | |
4210 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
4211 | ||
4212 | The result of the relocation calculation is stored in VALUEP. | |
4213 | REQUIRE_JALXP indicates whether or not the opcode used with this | |
4214 | relocation must be JALX. | |
4215 | ||
4216 | This function returns bfd_reloc_continue if the caller need take no | |
4217 | further action regarding this relocation, bfd_reloc_notsupported if | |
4218 | something goes dramatically wrong, bfd_reloc_overflow if an | |
4219 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
4220 | ||
4221 | static bfd_reloc_status_type | |
9719ad41 RS |
4222 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
4223 | asection *input_section, | |
4224 | struct bfd_link_info *info, | |
4225 | const Elf_Internal_Rela *relocation, | |
4226 | bfd_vma addend, reloc_howto_type *howto, | |
4227 | Elf_Internal_Sym *local_syms, | |
4228 | asection **local_sections, bfd_vma *valuep, | |
4229 | const char **namep, bfd_boolean *require_jalxp, | |
4230 | bfd_boolean save_addend) | |
b49e97c9 TS |
4231 | { |
4232 | /* The eventual value we will return. */ | |
4233 | bfd_vma value; | |
4234 | /* The address of the symbol against which the relocation is | |
4235 | occurring. */ | |
4236 | bfd_vma symbol = 0; | |
4237 | /* The final GP value to be used for the relocatable, executable, or | |
4238 | shared object file being produced. */ | |
0a61c8c2 | 4239 | bfd_vma gp; |
b49e97c9 TS |
4240 | /* The place (section offset or address) of the storage unit being |
4241 | relocated. */ | |
4242 | bfd_vma p; | |
4243 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 4244 | bfd_vma gp0; |
b49e97c9 TS |
4245 | /* The offset into the global offset table at which the address of |
4246 | the relocation entry symbol, adjusted by the addend, resides | |
4247 | during execution. */ | |
4248 | bfd_vma g = MINUS_ONE; | |
4249 | /* The section in which the symbol referenced by the relocation is | |
4250 | located. */ | |
4251 | asection *sec = NULL; | |
4252 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 4253 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 4254 | symbol. */ |
b34976b6 AM |
4255 | bfd_boolean local_p, was_local_p; |
4256 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ | |
4257 | bfd_boolean gp_disp_p = FALSE; | |
bbe506e8 TS |
4258 | /* TRUE if the symbol referred to by this relocation is |
4259 | "__gnu_local_gp". */ | |
4260 | bfd_boolean gnu_local_gp_p = FALSE; | |
b49e97c9 TS |
4261 | Elf_Internal_Shdr *symtab_hdr; |
4262 | size_t extsymoff; | |
4263 | unsigned long r_symndx; | |
4264 | int r_type; | |
b34976b6 | 4265 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 4266 | relocation value. */ |
b34976b6 AM |
4267 | bfd_boolean overflowed_p; |
4268 | /* TRUE if this relocation refers to a MIPS16 function. */ | |
4269 | bfd_boolean target_is_16_bit_code_p = FALSE; | |
0a44bf69 RS |
4270 | struct mips_elf_link_hash_table *htab; |
4271 | bfd *dynobj; | |
4272 | ||
4273 | dynobj = elf_hash_table (info)->dynobj; | |
4274 | htab = mips_elf_hash_table (info); | |
b49e97c9 TS |
4275 | |
4276 | /* Parse the relocation. */ | |
4277 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
4278 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
4279 | p = (input_section->output_section->vma | |
4280 | + input_section->output_offset | |
4281 | + relocation->r_offset); | |
4282 | ||
4283 | /* Assume that there will be no overflow. */ | |
b34976b6 | 4284 | overflowed_p = FALSE; |
b49e97c9 TS |
4285 | |
4286 | /* Figure out whether or not the symbol is local, and get the offset | |
4287 | used in the array of hash table entries. */ | |
4288 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4289 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 4290 | local_sections, FALSE); |
bce03d3d | 4291 | was_local_p = local_p; |
b49e97c9 TS |
4292 | if (! elf_bad_symtab (input_bfd)) |
4293 | extsymoff = symtab_hdr->sh_info; | |
4294 | else | |
4295 | { | |
4296 | /* The symbol table does not follow the rule that local symbols | |
4297 | must come before globals. */ | |
4298 | extsymoff = 0; | |
4299 | } | |
4300 | ||
4301 | /* Figure out the value of the symbol. */ | |
4302 | if (local_p) | |
4303 | { | |
4304 | Elf_Internal_Sym *sym; | |
4305 | ||
4306 | sym = local_syms + r_symndx; | |
4307 | sec = local_sections[r_symndx]; | |
4308 | ||
4309 | symbol = sec->output_section->vma + sec->output_offset; | |
d4df96e6 L |
4310 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION |
4311 | || (sec->flags & SEC_MERGE)) | |
b49e97c9 | 4312 | symbol += sym->st_value; |
d4df96e6 L |
4313 | if ((sec->flags & SEC_MERGE) |
4314 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4315 | { | |
4316 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
4317 | addend -= symbol; | |
4318 | addend += sec->output_section->vma + sec->output_offset; | |
4319 | } | |
b49e97c9 TS |
4320 | |
4321 | /* MIPS16 text labels should be treated as odd. */ | |
30c09090 | 4322 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
4323 | ++symbol; |
4324 | ||
4325 | /* Record the name of this symbol, for our caller. */ | |
4326 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
4327 | symtab_hdr->sh_link, | |
4328 | sym->st_name); | |
4329 | if (*namep == '\0') | |
4330 | *namep = bfd_section_name (input_bfd, sec); | |
4331 | ||
30c09090 | 4332 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); |
b49e97c9 TS |
4333 | } |
4334 | else | |
4335 | { | |
560e09e9 NC |
4336 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
4337 | ||
b49e97c9 TS |
4338 | /* For global symbols we look up the symbol in the hash-table. */ |
4339 | h = ((struct mips_elf_link_hash_entry *) | |
4340 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
4341 | /* Find the real hash-table entry for this symbol. */ | |
4342 | while (h->root.root.type == bfd_link_hash_indirect | |
4343 | || h->root.root.type == bfd_link_hash_warning) | |
4344 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4345 | ||
4346 | /* Record the name of this symbol, for our caller. */ | |
4347 | *namep = h->root.root.root.string; | |
4348 | ||
4349 | /* See if this is the special _gp_disp symbol. Note that such a | |
4350 | symbol must always be a global symbol. */ | |
560e09e9 | 4351 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
4352 | && ! NEWABI_P (input_bfd)) |
4353 | { | |
4354 | /* Relocations against _gp_disp are permitted only with | |
4355 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 4356 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
4357 | return bfd_reloc_notsupported; |
4358 | ||
b34976b6 | 4359 | gp_disp_p = TRUE; |
b49e97c9 | 4360 | } |
bbe506e8 TS |
4361 | /* See if this is the special _gp symbol. Note that such a |
4362 | symbol must always be a global symbol. */ | |
4363 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
4364 | gnu_local_gp_p = TRUE; | |
4365 | ||
4366 | ||
b49e97c9 TS |
4367 | /* If this symbol is defined, calculate its address. Note that |
4368 | _gp_disp is a magic symbol, always implicitly defined by the | |
4369 | linker, so it's inappropriate to check to see whether or not | |
4370 | its defined. */ | |
4371 | else if ((h->root.root.type == bfd_link_hash_defined | |
4372 | || h->root.root.type == bfd_link_hash_defweak) | |
4373 | && h->root.root.u.def.section) | |
4374 | { | |
4375 | sec = h->root.root.u.def.section; | |
4376 | if (sec->output_section) | |
4377 | symbol = (h->root.root.u.def.value | |
4378 | + sec->output_section->vma | |
4379 | + sec->output_offset); | |
4380 | else | |
4381 | symbol = h->root.root.u.def.value; | |
4382 | } | |
4383 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
4384 | /* We allow relocations against undefined weak symbols, giving | |
4385 | it the value zero, so that you can undefined weak functions | |
4386 | and check to see if they exist by looking at their | |
4387 | addresses. */ | |
4388 | symbol = 0; | |
59c2e50f | 4389 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
4390 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
4391 | symbol = 0; | |
a4d0f181 TS |
4392 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
4393 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
4394 | { |
4395 | /* If this is a dynamic link, we should have created a | |
4396 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
4397 | in in _bfd_mips_elf_create_dynamic_sections. | |
4398 | Otherwise, we should define the symbol with a value of 0. | |
4399 | FIXME: It should probably get into the symbol table | |
4400 | somehow as well. */ | |
4401 | BFD_ASSERT (! info->shared); | |
4402 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); | |
4403 | symbol = 0; | |
4404 | } | |
5e2b0d47 NC |
4405 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
4406 | { | |
4407 | /* This is an optional symbol - an Irix specific extension to the | |
4408 | ELF spec. Ignore it for now. | |
4409 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
4410 | than simply ignoring them, but we do not handle this for now. | |
4411 | For information see the "64-bit ELF Object File Specification" | |
4412 | which is available from here: | |
4413 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
4414 | symbol = 0; | |
4415 | } | |
b49e97c9 TS |
4416 | else |
4417 | { | |
4418 | if (! ((*info->callbacks->undefined_symbol) | |
4419 | (info, h->root.root.root.string, input_bfd, | |
4420 | input_section, relocation->r_offset, | |
59c2e50f L |
4421 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) |
4422 | || ELF_ST_VISIBILITY (h->root.other)))) | |
b49e97c9 TS |
4423 | return bfd_reloc_undefined; |
4424 | symbol = 0; | |
4425 | } | |
4426 | ||
30c09090 | 4427 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
b49e97c9 TS |
4428 | } |
4429 | ||
738e5348 RS |
4430 | /* If this is a reference to a 16-bit function with a stub, we need |
4431 | to redirect the relocation to the stub unless: | |
4432 | ||
4433 | (a) the relocation is for a MIPS16 JAL; | |
4434 | ||
4435 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
4436 | non-MIPS16 uses of the GOT slot; or | |
4437 | ||
4438 | (c) the section allows direct references to MIPS16 functions. */ | |
4439 | if (r_type != R_MIPS16_26 | |
4440 | && !info->relocatable | |
4441 | && ((h != NULL | |
4442 | && h->fn_stub != NULL | |
4443 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 TS |
4444 | || (local_p |
4445 | && elf_tdata (input_bfd)->local_stubs != NULL | |
b49e97c9 | 4446 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
738e5348 | 4447 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
4448 | { |
4449 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
4450 | have already noticed that we were going to need the | |
4451 | stub. */ | |
4452 | if (local_p) | |
4453 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
4454 | else | |
4455 | { | |
4456 | BFD_ASSERT (h->need_fn_stub); | |
4457 | sec = h->fn_stub; | |
4458 | } | |
4459 | ||
4460 | symbol = sec->output_section->vma + sec->output_offset; | |
f38c2df5 TS |
4461 | /* The target is 16-bit, but the stub isn't. */ |
4462 | target_is_16_bit_code_p = FALSE; | |
b49e97c9 TS |
4463 | } |
4464 | /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we | |
738e5348 RS |
4465 | need to redirect the call to the stub. Note that we specifically |
4466 | exclude R_MIPS16_CALL16 from this behavior; indirect calls should | |
4467 | use an indirect stub instead. */ | |
1049f94e | 4468 | else if (r_type == R_MIPS16_26 && !info->relocatable |
b314ec0e | 4469 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 TS |
4470 | || (local_p |
4471 | && elf_tdata (input_bfd)->local_call_stubs != NULL | |
4472 | && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
b49e97c9 TS |
4473 | && !target_is_16_bit_code_p) |
4474 | { | |
b9d58d71 TS |
4475 | if (local_p) |
4476 | sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx]; | |
4477 | else | |
b49e97c9 | 4478 | { |
b9d58d71 TS |
4479 | /* If both call_stub and call_fp_stub are defined, we can figure |
4480 | out which one to use by checking which one appears in the input | |
4481 | file. */ | |
4482 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 4483 | { |
b9d58d71 TS |
4484 | asection *o; |
4485 | ||
4486 | sec = NULL; | |
4487 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 4488 | { |
b9d58d71 TS |
4489 | if (CALL_FP_STUB_P (bfd_get_section_name (input_bfd, o))) |
4490 | { | |
4491 | sec = h->call_fp_stub; | |
4492 | break; | |
4493 | } | |
b49e97c9 | 4494 | } |
b9d58d71 TS |
4495 | if (sec == NULL) |
4496 | sec = h->call_stub; | |
b49e97c9 | 4497 | } |
b9d58d71 | 4498 | else if (h->call_stub != NULL) |
b49e97c9 | 4499 | sec = h->call_stub; |
b9d58d71 TS |
4500 | else |
4501 | sec = h->call_fp_stub; | |
4502 | } | |
b49e97c9 | 4503 | |
eea6121a | 4504 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
4505 | symbol = sec->output_section->vma + sec->output_offset; |
4506 | } | |
4507 | ||
4508 | /* Calls from 16-bit code to 32-bit code and vice versa require the | |
4509 | special jalx instruction. */ | |
1049f94e | 4510 | *require_jalxp = (!info->relocatable |
b49e97c9 TS |
4511 | && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p) |
4512 | || ((r_type == R_MIPS_26) && target_is_16_bit_code_p))); | |
4513 | ||
4514 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
b34976b6 | 4515 | local_sections, TRUE); |
b49e97c9 | 4516 | |
0a61c8c2 RS |
4517 | gp0 = _bfd_get_gp_value (input_bfd); |
4518 | gp = _bfd_get_gp_value (abfd); | |
4519 | if (dynobj) | |
4520 | gp += mips_elf_adjust_gp (abfd, mips_elf_got_info (dynobj, NULL), | |
4521 | input_bfd); | |
4522 | ||
4523 | if (gnu_local_gp_p) | |
4524 | symbol = gp; | |
4525 | ||
4526 | /* If we haven't already determined the GOT offset, oand we're going | |
4527 | to need it, get it now. */ | |
b49e97c9 TS |
4528 | switch (r_type) |
4529 | { | |
0fdc1bf1 | 4530 | case R_MIPS_GOT_PAGE: |
93a2b7ae | 4531 | case R_MIPS_GOT_OFST: |
d25aed71 RS |
4532 | /* We need to decay to GOT_DISP/addend if the symbol doesn't |
4533 | bind locally. */ | |
4534 | local_p = local_p || _bfd_elf_symbol_refs_local_p (&h->root, info, 1); | |
93a2b7ae | 4535 | if (local_p || r_type == R_MIPS_GOT_OFST) |
0fdc1bf1 AO |
4536 | break; |
4537 | /* Fall through. */ | |
4538 | ||
738e5348 RS |
4539 | case R_MIPS16_CALL16: |
4540 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
4541 | case R_MIPS_CALL16: |
4542 | case R_MIPS_GOT16: | |
4543 | case R_MIPS_GOT_DISP: | |
4544 | case R_MIPS_GOT_HI16: | |
4545 | case R_MIPS_CALL_HI16: | |
4546 | case R_MIPS_GOT_LO16: | |
4547 | case R_MIPS_CALL_LO16: | |
0f20cc35 DJ |
4548 | case R_MIPS_TLS_GD: |
4549 | case R_MIPS_TLS_GOTTPREL: | |
4550 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 4551 | /* Find the index into the GOT where this value is located. */ |
0f20cc35 DJ |
4552 | if (r_type == R_MIPS_TLS_LDM) |
4553 | { | |
0a44bf69 | 4554 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 4555 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
4556 | if (g == MINUS_ONE) |
4557 | return bfd_reloc_outofrange; | |
4558 | } | |
4559 | else if (!local_p) | |
b49e97c9 | 4560 | { |
0a44bf69 RS |
4561 | /* On VxWorks, CALL relocations should refer to the .got.plt |
4562 | entry, which is initialized to point at the PLT stub. */ | |
4563 | if (htab->is_vxworks | |
4564 | && (r_type == R_MIPS_CALL_HI16 | |
4565 | || r_type == R_MIPS_CALL_LO16 | |
738e5348 | 4566 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
4567 | { |
4568 | BFD_ASSERT (addend == 0); | |
4569 | BFD_ASSERT (h->root.needs_plt); | |
4570 | g = mips_elf_gotplt_index (info, &h->root); | |
4571 | } | |
4572 | else | |
b49e97c9 | 4573 | { |
0a44bf69 RS |
4574 | /* GOT_PAGE may take a non-zero addend, that is ignored in a |
4575 | GOT_PAGE relocation that decays to GOT_DISP because the | |
4576 | symbol turns out to be global. The addend is then added | |
4577 | as GOT_OFST. */ | |
4578 | BFD_ASSERT (addend == 0 || r_type == R_MIPS_GOT_PAGE); | |
4579 | g = mips_elf_global_got_index (dynobj, input_bfd, | |
4580 | &h->root, r_type, info); | |
4581 | if (h->tls_type == GOT_NORMAL | |
4582 | && (! elf_hash_table(info)->dynamic_sections_created | |
4583 | || (info->shared | |
4584 | && (info->symbolic || h->root.forced_local) | |
4585 | && h->root.def_regular))) | |
4586 | { | |
4587 | /* This is a static link or a -Bsymbolic link. The | |
4588 | symbol is defined locally, or was forced to be local. | |
4589 | We must initialize this entry in the GOT. */ | |
4590 | asection *sgot = mips_elf_got_section (dynobj, FALSE); | |
4591 | MIPS_ELF_PUT_WORD (dynobj, symbol, sgot->contents + g); | |
4592 | } | |
b49e97c9 TS |
4593 | } |
4594 | } | |
0a44bf69 | 4595 | else if (!htab->is_vxworks |
738e5348 | 4596 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 4597 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
4598 | break; |
4599 | else | |
4600 | { | |
5c18022e | 4601 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 4602 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
4603 | if (g == MINUS_ONE) |
4604 | return bfd_reloc_outofrange; | |
4605 | } | |
4606 | ||
4607 | /* Convert GOT indices to actual offsets. */ | |
0a44bf69 | 4608 | g = mips_elf_got_offset_from_index (dynobj, abfd, input_bfd, g); |
b49e97c9 | 4609 | break; |
b49e97c9 TS |
4610 | } |
4611 | ||
0a44bf69 RS |
4612 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
4613 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
4614 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
4615 | { | |
4616 | Elf_Internal_Rela outrel; | |
4617 | bfd_byte *loc; | |
4618 | asection *s; | |
4619 | ||
4620 | s = mips_elf_rel_dyn_section (info, FALSE); | |
4621 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
4622 | ||
4623 | outrel.r_offset = (input_section->output_section->vma | |
4624 | + input_section->output_offset | |
4625 | + relocation->r_offset); | |
4626 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
4627 | outrel.r_addend = addend; | |
4628 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
4629 | |
4630 | /* If we've written this relocation for a readonly section, | |
4631 | we need to set DF_TEXTREL again, so that we do not delete the | |
4632 | DT_TEXTREL tag. */ | |
4633 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
4634 | info->flags |= DF_TEXTREL; | |
4635 | ||
0a44bf69 RS |
4636 | *valuep = 0; |
4637 | return bfd_reloc_ok; | |
4638 | } | |
4639 | ||
b49e97c9 TS |
4640 | /* Figure out what kind of relocation is being performed. */ |
4641 | switch (r_type) | |
4642 | { | |
4643 | case R_MIPS_NONE: | |
4644 | return bfd_reloc_continue; | |
4645 | ||
4646 | case R_MIPS_16: | |
a7ebbfdf | 4647 | value = symbol + _bfd_mips_elf_sign_extend (addend, 16); |
b49e97c9 TS |
4648 | overflowed_p = mips_elf_overflow_p (value, 16); |
4649 | break; | |
4650 | ||
4651 | case R_MIPS_32: | |
4652 | case R_MIPS_REL32: | |
4653 | case R_MIPS_64: | |
4654 | if ((info->shared | |
0a44bf69 RS |
4655 | || (!htab->is_vxworks |
4656 | && htab->root.dynamic_sections_created | |
b49e97c9 | 4657 | && h != NULL |
f5385ebf AM |
4658 | && h->root.def_dynamic |
4659 | && !h->root.def_regular)) | |
b49e97c9 | 4660 | && r_symndx != 0 |
9a59ad6b DJ |
4661 | && (h == NULL |
4662 | || h->root.root.type != bfd_link_hash_undefweak | |
4663 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) | |
b49e97c9 TS |
4664 | && (input_section->flags & SEC_ALLOC) != 0) |
4665 | { | |
4666 | /* If we're creating a shared library, or this relocation is | |
4667 | against a symbol in a shared library, then we can't know | |
4668 | where the symbol will end up. So, we create a relocation | |
4669 | record in the output, and leave the job up to the dynamic | |
0a44bf69 RS |
4670 | linker. |
4671 | ||
4672 | In VxWorks executables, references to external symbols | |
4673 | are handled using copy relocs or PLT stubs, so there's | |
4674 | no need to add a dynamic relocation here. */ | |
b49e97c9 TS |
4675 | value = addend; |
4676 | if (!mips_elf_create_dynamic_relocation (abfd, | |
4677 | info, | |
4678 | relocation, | |
4679 | h, | |
4680 | sec, | |
4681 | symbol, | |
4682 | &value, | |
4683 | input_section)) | |
4684 | return bfd_reloc_undefined; | |
4685 | } | |
4686 | else | |
4687 | { | |
4688 | if (r_type != R_MIPS_REL32) | |
4689 | value = symbol + addend; | |
4690 | else | |
4691 | value = addend; | |
4692 | } | |
4693 | value &= howto->dst_mask; | |
092dcd75 CD |
4694 | break; |
4695 | ||
4696 | case R_MIPS_PC32: | |
4697 | value = symbol + addend - p; | |
4698 | value &= howto->dst_mask; | |
b49e97c9 TS |
4699 | break; |
4700 | ||
b49e97c9 TS |
4701 | case R_MIPS16_26: |
4702 | /* The calculation for R_MIPS16_26 is just the same as for an | |
4703 | R_MIPS_26. It's only the storage of the relocated field into | |
4704 | the output file that's different. That's handled in | |
4705 | mips_elf_perform_relocation. So, we just fall through to the | |
4706 | R_MIPS_26 case here. */ | |
4707 | case R_MIPS_26: | |
4708 | if (local_p) | |
30ac9238 | 4709 | value = ((addend | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
b49e97c9 | 4710 | else |
728b2f21 ILT |
4711 | { |
4712 | value = (_bfd_mips_elf_sign_extend (addend, 28) + symbol) >> 2; | |
c314987d RS |
4713 | if (h->root.root.type != bfd_link_hash_undefweak) |
4714 | overflowed_p = (value >> 26) != ((p + 4) >> 28); | |
728b2f21 | 4715 | } |
b49e97c9 TS |
4716 | value &= howto->dst_mask; |
4717 | break; | |
4718 | ||
0f20cc35 DJ |
4719 | case R_MIPS_TLS_DTPREL_HI16: |
4720 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) | |
4721 | & howto->dst_mask); | |
4722 | break; | |
4723 | ||
4724 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
4725 | case R_MIPS_TLS_DTPREL32: |
4726 | case R_MIPS_TLS_DTPREL64: | |
0f20cc35 DJ |
4727 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
4728 | break; | |
4729 | ||
4730 | case R_MIPS_TLS_TPREL_HI16: | |
4731 | value = (mips_elf_high (addend + symbol - tprel_base (info)) | |
4732 | & howto->dst_mask); | |
4733 | break; | |
4734 | ||
4735 | case R_MIPS_TLS_TPREL_LO16: | |
4736 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; | |
4737 | break; | |
4738 | ||
b49e97c9 | 4739 | case R_MIPS_HI16: |
d6f16593 | 4740 | case R_MIPS16_HI16: |
b49e97c9 TS |
4741 | if (!gp_disp_p) |
4742 | { | |
4743 | value = mips_elf_high (addend + symbol); | |
4744 | value &= howto->dst_mask; | |
4745 | } | |
4746 | else | |
4747 | { | |
d6f16593 MR |
4748 | /* For MIPS16 ABI code we generate this sequence |
4749 | 0: li $v0,%hi(_gp_disp) | |
4750 | 4: addiupc $v1,%lo(_gp_disp) | |
4751 | 8: sll $v0,16 | |
4752 | 12: addu $v0,$v1 | |
4753 | 14: move $gp,$v0 | |
4754 | So the offsets of hi and lo relocs are the same, but the | |
4755 | $pc is four higher than $t9 would be, so reduce | |
4756 | both reloc addends by 4. */ | |
4757 | if (r_type == R_MIPS16_HI16) | |
4758 | value = mips_elf_high (addend + gp - p - 4); | |
4759 | else | |
4760 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
4761 | overflowed_p = mips_elf_overflow_p (value, 16); |
4762 | } | |
4763 | break; | |
4764 | ||
4765 | case R_MIPS_LO16: | |
d6f16593 | 4766 | case R_MIPS16_LO16: |
b49e97c9 TS |
4767 | if (!gp_disp_p) |
4768 | value = (symbol + addend) & howto->dst_mask; | |
4769 | else | |
4770 | { | |
d6f16593 MR |
4771 | /* See the comment for R_MIPS16_HI16 above for the reason |
4772 | for this conditional. */ | |
4773 | if (r_type == R_MIPS16_LO16) | |
4774 | value = addend + gp - p; | |
4775 | else | |
4776 | value = addend + gp - p + 4; | |
b49e97c9 | 4777 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 4778 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
4779 | _gp_disp are normally generated from the .cpload |
4780 | pseudo-op. It generates code that normally looks like | |
4781 | this: | |
4782 | ||
4783 | lui $gp,%hi(_gp_disp) | |
4784 | addiu $gp,$gp,%lo(_gp_disp) | |
4785 | addu $gp,$gp,$t9 | |
4786 | ||
4787 | Here $t9 holds the address of the function being called, | |
4788 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
4789 | relocation can easily overflow in this situation, but the | |
4790 | R_MIPS_HI16 relocation will handle the overflow. | |
4791 | Therefore, we consider this a bug in the MIPS ABI, and do | |
4792 | not check for overflow here. */ | |
4793 | } | |
4794 | break; | |
4795 | ||
4796 | case R_MIPS_LITERAL: | |
4797 | /* Because we don't merge literal sections, we can handle this | |
4798 | just like R_MIPS_GPREL16. In the long run, we should merge | |
4799 | shared literals, and then we will need to additional work | |
4800 | here. */ | |
4801 | ||
4802 | /* Fall through. */ | |
4803 | ||
4804 | case R_MIPS16_GPREL: | |
4805 | /* The R_MIPS16_GPREL performs the same calculation as | |
4806 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
4807 | order. We don't need to do anything special here; the | |
4808 | differences are handled in mips_elf_perform_relocation. */ | |
4809 | case R_MIPS_GPREL16: | |
bce03d3d AO |
4810 | /* Only sign-extend the addend if it was extracted from the |
4811 | instruction. If the addend was separate, leave it alone, | |
4812 | otherwise we may lose significant bits. */ | |
4813 | if (howto->partial_inplace) | |
a7ebbfdf | 4814 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
4815 | value = symbol + addend - gp; |
4816 | /* If the symbol was local, any earlier relocatable links will | |
4817 | have adjusted its addend with the gp offset, so compensate | |
4818 | for that now. Don't do it for symbols forced local in this | |
4819 | link, though, since they won't have had the gp offset applied | |
4820 | to them before. */ | |
4821 | if (was_local_p) | |
4822 | value += gp0; | |
b49e97c9 TS |
4823 | overflowed_p = mips_elf_overflow_p (value, 16); |
4824 | break; | |
4825 | ||
738e5348 RS |
4826 | case R_MIPS16_GOT16: |
4827 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
4828 | case R_MIPS_GOT16: |
4829 | case R_MIPS_CALL16: | |
0a44bf69 | 4830 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 4831 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
0a44bf69 | 4832 | if (!htab->is_vxworks && local_p) |
b49e97c9 | 4833 | { |
b34976b6 | 4834 | bfd_boolean forced; |
b49e97c9 | 4835 | |
b49e97c9 | 4836 | forced = ! mips_elf_local_relocation_p (input_bfd, relocation, |
b34976b6 | 4837 | local_sections, FALSE); |
5c18022e | 4838 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
f4416af6 | 4839 | symbol + addend, forced); |
b49e97c9 TS |
4840 | if (value == MINUS_ONE) |
4841 | return bfd_reloc_outofrange; | |
4842 | value | |
0a44bf69 | 4843 | = mips_elf_got_offset_from_index (dynobj, abfd, input_bfd, value); |
b49e97c9 TS |
4844 | overflowed_p = mips_elf_overflow_p (value, 16); |
4845 | break; | |
4846 | } | |
4847 | ||
4848 | /* Fall through. */ | |
4849 | ||
0f20cc35 DJ |
4850 | case R_MIPS_TLS_GD: |
4851 | case R_MIPS_TLS_GOTTPREL: | |
4852 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 4853 | case R_MIPS_GOT_DISP: |
0fdc1bf1 | 4854 | got_disp: |
b49e97c9 TS |
4855 | value = g; |
4856 | overflowed_p = mips_elf_overflow_p (value, 16); | |
4857 | break; | |
4858 | ||
4859 | case R_MIPS_GPREL32: | |
bce03d3d AO |
4860 | value = (addend + symbol + gp0 - gp); |
4861 | if (!save_addend) | |
4862 | value &= howto->dst_mask; | |
b49e97c9 TS |
4863 | break; |
4864 | ||
4865 | case R_MIPS_PC16: | |
bad36eac DJ |
4866 | case R_MIPS_GNU_REL16_S2: |
4867 | value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p; | |
4868 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
4869 | value >>= howto->rightshift; |
4870 | value &= howto->dst_mask; | |
b49e97c9 TS |
4871 | break; |
4872 | ||
4873 | case R_MIPS_GOT_HI16: | |
4874 | case R_MIPS_CALL_HI16: | |
4875 | /* We're allowed to handle these two relocations identically. | |
4876 | The dynamic linker is allowed to handle the CALL relocations | |
4877 | differently by creating a lazy evaluation stub. */ | |
4878 | value = g; | |
4879 | value = mips_elf_high (value); | |
4880 | value &= howto->dst_mask; | |
4881 | break; | |
4882 | ||
4883 | case R_MIPS_GOT_LO16: | |
4884 | case R_MIPS_CALL_LO16: | |
4885 | value = g & howto->dst_mask; | |
4886 | break; | |
4887 | ||
4888 | case R_MIPS_GOT_PAGE: | |
0fdc1bf1 AO |
4889 | /* GOT_PAGE relocations that reference non-local symbols decay |
4890 | to GOT_DISP. The corresponding GOT_OFST relocation decays to | |
4891 | 0. */ | |
93a2b7ae | 4892 | if (! local_p) |
0fdc1bf1 | 4893 | goto got_disp; |
5c18022e | 4894 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
4895 | if (value == MINUS_ONE) |
4896 | return bfd_reloc_outofrange; | |
0a44bf69 | 4897 | value = mips_elf_got_offset_from_index (dynobj, abfd, input_bfd, value); |
b49e97c9 TS |
4898 | overflowed_p = mips_elf_overflow_p (value, 16); |
4899 | break; | |
4900 | ||
4901 | case R_MIPS_GOT_OFST: | |
93a2b7ae | 4902 | if (local_p) |
5c18022e | 4903 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
4904 | else |
4905 | value = addend; | |
b49e97c9 TS |
4906 | overflowed_p = mips_elf_overflow_p (value, 16); |
4907 | break; | |
4908 | ||
4909 | case R_MIPS_SUB: | |
4910 | value = symbol - addend; | |
4911 | value &= howto->dst_mask; | |
4912 | break; | |
4913 | ||
4914 | case R_MIPS_HIGHER: | |
4915 | value = mips_elf_higher (addend + symbol); | |
4916 | value &= howto->dst_mask; | |
4917 | break; | |
4918 | ||
4919 | case R_MIPS_HIGHEST: | |
4920 | value = mips_elf_highest (addend + symbol); | |
4921 | value &= howto->dst_mask; | |
4922 | break; | |
4923 | ||
4924 | case R_MIPS_SCN_DISP: | |
4925 | value = symbol + addend - sec->output_offset; | |
4926 | value &= howto->dst_mask; | |
4927 | break; | |
4928 | ||
b49e97c9 | 4929 | case R_MIPS_JALR: |
1367d393 ILT |
4930 | /* This relocation is only a hint. In some cases, we optimize |
4931 | it into a bal instruction. But we don't try to optimize | |
4932 | branches to the PLT; that will wind up wasting time. */ | |
4933 | if (h != NULL && h->root.plt.offset != (bfd_vma) -1) | |
4934 | return bfd_reloc_continue; | |
4935 | value = symbol + addend; | |
4936 | break; | |
b49e97c9 | 4937 | |
1367d393 | 4938 | case R_MIPS_PJUMP: |
b49e97c9 TS |
4939 | case R_MIPS_GNU_VTINHERIT: |
4940 | case R_MIPS_GNU_VTENTRY: | |
4941 | /* We don't do anything with these at present. */ | |
4942 | return bfd_reloc_continue; | |
4943 | ||
4944 | default: | |
4945 | /* An unrecognized relocation type. */ | |
4946 | return bfd_reloc_notsupported; | |
4947 | } | |
4948 | ||
4949 | /* Store the VALUE for our caller. */ | |
4950 | *valuep = value; | |
4951 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
4952 | } | |
4953 | ||
4954 | /* Obtain the field relocated by RELOCATION. */ | |
4955 | ||
4956 | static bfd_vma | |
9719ad41 RS |
4957 | mips_elf_obtain_contents (reloc_howto_type *howto, |
4958 | const Elf_Internal_Rela *relocation, | |
4959 | bfd *input_bfd, bfd_byte *contents) | |
b49e97c9 TS |
4960 | { |
4961 | bfd_vma x; | |
4962 | bfd_byte *location = contents + relocation->r_offset; | |
4963 | ||
4964 | /* Obtain the bytes. */ | |
4965 | x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location); | |
4966 | ||
b49e97c9 TS |
4967 | return x; |
4968 | } | |
4969 | ||
4970 | /* It has been determined that the result of the RELOCATION is the | |
4971 | VALUE. Use HOWTO to place VALUE into the output file at the | |
4972 | appropriate position. The SECTION is the section to which the | |
b34976b6 | 4973 | relocation applies. If REQUIRE_JALX is TRUE, then the opcode used |
b49e97c9 TS |
4974 | for the relocation must be either JAL or JALX, and it is |
4975 | unconditionally converted to JALX. | |
4976 | ||
b34976b6 | 4977 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 4978 | |
b34976b6 | 4979 | static bfd_boolean |
9719ad41 RS |
4980 | mips_elf_perform_relocation (struct bfd_link_info *info, |
4981 | reloc_howto_type *howto, | |
4982 | const Elf_Internal_Rela *relocation, | |
4983 | bfd_vma value, bfd *input_bfd, | |
4984 | asection *input_section, bfd_byte *contents, | |
4985 | bfd_boolean require_jalx) | |
b49e97c9 TS |
4986 | { |
4987 | bfd_vma x; | |
4988 | bfd_byte *location; | |
4989 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
4990 | ||
4991 | /* Figure out where the relocation is occurring. */ | |
4992 | location = contents + relocation->r_offset; | |
4993 | ||
d6f16593 MR |
4994 | _bfd_mips16_elf_reloc_unshuffle (input_bfd, r_type, FALSE, location); |
4995 | ||
b49e97c9 TS |
4996 | /* Obtain the current value. */ |
4997 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
4998 | ||
4999 | /* Clear the field we are setting. */ | |
5000 | x &= ~howto->dst_mask; | |
5001 | ||
b49e97c9 TS |
5002 | /* Set the field. */ |
5003 | x |= (value & howto->dst_mask); | |
5004 | ||
5005 | /* If required, turn JAL into JALX. */ | |
5006 | if (require_jalx) | |
5007 | { | |
b34976b6 | 5008 | bfd_boolean ok; |
b49e97c9 TS |
5009 | bfd_vma opcode = x >> 26; |
5010 | bfd_vma jalx_opcode; | |
5011 | ||
5012 | /* Check to see if the opcode is already JAL or JALX. */ | |
5013 | if (r_type == R_MIPS16_26) | |
5014 | { | |
5015 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
5016 | jalx_opcode = 0x7; | |
5017 | } | |
5018 | else | |
5019 | { | |
5020 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
5021 | jalx_opcode = 0x1d; | |
5022 | } | |
5023 | ||
5024 | /* If the opcode is not JAL or JALX, there's a problem. */ | |
5025 | if (!ok) | |
5026 | { | |
5027 | (*_bfd_error_handler) | |
d003868e AM |
5028 | (_("%B: %A+0x%lx: jump to stub routine which is not jal"), |
5029 | input_bfd, | |
5030 | input_section, | |
b49e97c9 TS |
5031 | (unsigned long) relocation->r_offset); |
5032 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5033 | return FALSE; |
b49e97c9 TS |
5034 | } |
5035 | ||
5036 | /* Make this the JALX opcode. */ | |
5037 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); | |
5038 | } | |
5039 | ||
1367d393 ILT |
5040 | /* On the RM9000, bal is faster than jal, because bal uses branch |
5041 | prediction hardware. If we are linking for the RM9000, and we | |
5042 | see jal, and bal fits, use it instead. Note that this | |
5043 | transformation should be safe for all architectures. */ | |
5044 | if (bfd_get_mach (input_bfd) == bfd_mach_mips9000 | |
5045 | && !info->relocatable | |
5046 | && !require_jalx | |
5047 | && ((r_type == R_MIPS_26 && (x >> 26) == 0x3) /* jal addr */ | |
5048 | || (r_type == R_MIPS_JALR && x == 0x0320f809))) /* jalr t9 */ | |
5049 | { | |
5050 | bfd_vma addr; | |
5051 | bfd_vma dest; | |
5052 | bfd_signed_vma off; | |
5053 | ||
5054 | addr = (input_section->output_section->vma | |
5055 | + input_section->output_offset | |
5056 | + relocation->r_offset | |
5057 | + 4); | |
5058 | if (r_type == R_MIPS_26) | |
5059 | dest = (value << 2) | ((addr >> 28) << 28); | |
5060 | else | |
5061 | dest = value; | |
5062 | off = dest - addr; | |
5063 | if (off <= 0x1ffff && off >= -0x20000) | |
5064 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
5065 | } | |
5066 | ||
b49e97c9 TS |
5067 | /* Put the value into the output. */ |
5068 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); | |
d6f16593 MR |
5069 | |
5070 | _bfd_mips16_elf_reloc_shuffle(input_bfd, r_type, !info->relocatable, | |
5071 | location); | |
5072 | ||
b34976b6 | 5073 | return TRUE; |
b49e97c9 | 5074 | } |
b49e97c9 | 5075 | \f |
0a44bf69 | 5076 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ |
b49e97c9 TS |
5077 | |
5078 | static void | |
0a44bf69 RS |
5079 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, |
5080 | unsigned int n) | |
b49e97c9 TS |
5081 | { |
5082 | asection *s; | |
0a44bf69 | 5083 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 5084 | |
0a44bf69 RS |
5085 | htab = mips_elf_hash_table (info); |
5086 | s = mips_elf_rel_dyn_section (info, FALSE); | |
b49e97c9 TS |
5087 | BFD_ASSERT (s != NULL); |
5088 | ||
0a44bf69 RS |
5089 | if (htab->is_vxworks) |
5090 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); | |
5091 | else | |
b49e97c9 | 5092 | { |
0a44bf69 RS |
5093 | if (s->size == 0) |
5094 | { | |
5095 | /* Make room for a null element. */ | |
5096 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
5097 | ++s->reloc_count; | |
5098 | } | |
5099 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
b49e97c9 | 5100 | } |
b49e97c9 TS |
5101 | } |
5102 | ||
5103 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL | |
5104 | is the original relocation, which is now being transformed into a | |
5105 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
5106 | caller should store the result in place of the original addend. */ | |
5107 | ||
b34976b6 | 5108 | static bfd_boolean |
9719ad41 RS |
5109 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
5110 | struct bfd_link_info *info, | |
5111 | const Elf_Internal_Rela *rel, | |
5112 | struct mips_elf_link_hash_entry *h, | |
5113 | asection *sec, bfd_vma symbol, | |
5114 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 5115 | { |
947216bf | 5116 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
5117 | asection *sreloc; |
5118 | bfd *dynobj; | |
5119 | int r_type; | |
5d41f0b6 RS |
5120 | long indx; |
5121 | bfd_boolean defined_p; | |
0a44bf69 | 5122 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 5123 | |
0a44bf69 | 5124 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
5125 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
5126 | dynobj = elf_hash_table (info)->dynobj; | |
0a44bf69 | 5127 | sreloc = mips_elf_rel_dyn_section (info, FALSE); |
b49e97c9 TS |
5128 | BFD_ASSERT (sreloc != NULL); |
5129 | BFD_ASSERT (sreloc->contents != NULL); | |
5130 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 5131 | < sreloc->size); |
b49e97c9 | 5132 | |
b49e97c9 TS |
5133 | outrel[0].r_offset = |
5134 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
5135 | if (ABI_64_P (output_bfd)) |
5136 | { | |
5137 | outrel[1].r_offset = | |
5138 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
5139 | outrel[2].r_offset = | |
5140 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
5141 | } | |
b49e97c9 | 5142 | |
c5ae1840 | 5143 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 5144 | /* The relocation field has been deleted. */ |
5d41f0b6 RS |
5145 | return TRUE; |
5146 | ||
5147 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
5148 | { |
5149 | /* The relocation field has been converted into a relative value of | |
5150 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
5151 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 5152 | *addendp += symbol; |
5d41f0b6 | 5153 | return TRUE; |
0d591ff7 | 5154 | } |
b49e97c9 | 5155 | |
5d41f0b6 RS |
5156 | /* We must now calculate the dynamic symbol table index to use |
5157 | in the relocation. */ | |
5158 | if (h != NULL | |
6ece8836 TS |
5159 | && (!h->root.def_regular |
5160 | || (info->shared && !info->symbolic && !h->root.forced_local))) | |
5d41f0b6 RS |
5161 | { |
5162 | indx = h->root.dynindx; | |
5163 | if (SGI_COMPAT (output_bfd)) | |
5164 | defined_p = h->root.def_regular; | |
5165 | else | |
5166 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
5167 | relocation field. It therefore treats relocs against | |
5168 | defined symbols in the same way as relocs against | |
5169 | undefined symbols. */ | |
5170 | defined_p = FALSE; | |
5171 | } | |
b49e97c9 TS |
5172 | else |
5173 | { | |
5d41f0b6 RS |
5174 | if (sec != NULL && bfd_is_abs_section (sec)) |
5175 | indx = 0; | |
5176 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 5177 | { |
5d41f0b6 RS |
5178 | bfd_set_error (bfd_error_bad_value); |
5179 | return FALSE; | |
b49e97c9 TS |
5180 | } |
5181 | else | |
5182 | { | |
5d41f0b6 | 5183 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
5184 | if (indx == 0) |
5185 | { | |
5186 | asection *osec = htab->root.text_index_section; | |
5187 | indx = elf_section_data (osec)->dynindx; | |
5188 | } | |
5d41f0b6 RS |
5189 | if (indx == 0) |
5190 | abort (); | |
b49e97c9 TS |
5191 | } |
5192 | ||
5d41f0b6 RS |
5193 | /* Instead of generating a relocation using the section |
5194 | symbol, we may as well make it a fully relative | |
5195 | relocation. We want to avoid generating relocations to | |
5196 | local symbols because we used to generate them | |
5197 | incorrectly, without adding the original symbol value, | |
5198 | which is mandated by the ABI for section symbols. In | |
5199 | order to give dynamic loaders and applications time to | |
5200 | phase out the incorrect use, we refrain from emitting | |
5201 | section-relative relocations. It's not like they're | |
5202 | useful, after all. This should be a bit more efficient | |
5203 | as well. */ | |
5204 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
5205 | the ABI says that relocations against STN_UNDEF should have | |
5206 | a symbol value of 0. Irix rld honors this, so relocations | |
5207 | against STN_UNDEF have no effect. */ | |
5208 | if (!SGI_COMPAT (output_bfd)) | |
5209 | indx = 0; | |
5210 | defined_p = TRUE; | |
b49e97c9 TS |
5211 | } |
5212 | ||
5d41f0b6 RS |
5213 | /* If the relocation was previously an absolute relocation and |
5214 | this symbol will not be referred to by the relocation, we must | |
5215 | adjust it by the value we give it in the dynamic symbol table. | |
5216 | Otherwise leave the job up to the dynamic linker. */ | |
5217 | if (defined_p && r_type != R_MIPS_REL32) | |
5218 | *addendp += symbol; | |
5219 | ||
0a44bf69 RS |
5220 | if (htab->is_vxworks) |
5221 | /* VxWorks uses non-relative relocations for this. */ | |
5222 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
5223 | else | |
5224 | /* The relocation is always an REL32 relocation because we don't | |
5225 | know where the shared library will wind up at load-time. */ | |
5226 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
5227 | R_MIPS_REL32); | |
5228 | ||
5d41f0b6 RS |
5229 | /* For strict adherence to the ABI specification, we should |
5230 | generate a R_MIPS_64 relocation record by itself before the | |
5231 | _REL32/_64 record as well, such that the addend is read in as | |
5232 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
5233 | However, since none of the existing ELF64 MIPS dynamic | |
5234 | loaders seems to care, we don't waste space with these | |
5235 | artificial relocations. If this turns out to not be true, | |
5236 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
5237 | as to make room for a pair of dynamic relocations per | |
5238 | invocation if ABI_64_P, and here we should generate an | |
5239 | additional relocation record with R_MIPS_64 by itself for a | |
5240 | NULL symbol before this relocation record. */ | |
5241 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
5242 | ABI_64_P (output_bfd) | |
5243 | ? R_MIPS_64 | |
5244 | : R_MIPS_NONE); | |
5245 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
5246 | ||
5247 | /* Adjust the output offset of the relocation to reference the | |
5248 | correct location in the output file. */ | |
5249 | outrel[0].r_offset += (input_section->output_section->vma | |
5250 | + input_section->output_offset); | |
5251 | outrel[1].r_offset += (input_section->output_section->vma | |
5252 | + input_section->output_offset); | |
5253 | outrel[2].r_offset += (input_section->output_section->vma | |
5254 | + input_section->output_offset); | |
5255 | ||
b49e97c9 TS |
5256 | /* Put the relocation back out. We have to use the special |
5257 | relocation outputter in the 64-bit case since the 64-bit | |
5258 | relocation format is non-standard. */ | |
5259 | if (ABI_64_P (output_bfd)) | |
5260 | { | |
5261 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
5262 | (output_bfd, &outrel[0], | |
5263 | (sreloc->contents | |
5264 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
5265 | } | |
0a44bf69 RS |
5266 | else if (htab->is_vxworks) |
5267 | { | |
5268 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
5269 | outrel[0].r_addend = *addendp; | |
5270 | bfd_elf32_swap_reloca_out | |
5271 | (output_bfd, &outrel[0], | |
5272 | (sreloc->contents | |
5273 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
5274 | } | |
b49e97c9 | 5275 | else |
947216bf AM |
5276 | bfd_elf32_swap_reloc_out |
5277 | (output_bfd, &outrel[0], | |
5278 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 5279 | |
b49e97c9 TS |
5280 | /* We've now added another relocation. */ |
5281 | ++sreloc->reloc_count; | |
5282 | ||
5283 | /* Make sure the output section is writable. The dynamic linker | |
5284 | will be writing to it. */ | |
5285 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
5286 | |= SHF_WRITE; | |
5287 | ||
5288 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 5289 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 TS |
5290 | { |
5291 | asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
5292 | bfd_byte *cr; | |
5293 | ||
5294 | if (scpt) | |
5295 | { | |
5296 | Elf32_crinfo cptrel; | |
5297 | ||
5298 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5299 | cptrel.vaddr = (rel->r_offset | |
5300 | + input_section->output_section->vma | |
5301 | + input_section->output_offset); | |
5302 | if (r_type == R_MIPS_REL32) | |
5303 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
5304 | else | |
5305 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
5306 | mips_elf_set_cr_dist2to (cptrel, 0); | |
5307 | cptrel.konst = *addendp; | |
5308 | ||
5309 | cr = (scpt->contents | |
5310 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 5311 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
5312 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
5313 | ((Elf32_External_crinfo *) cr | |
5314 | + scpt->reloc_count)); | |
5315 | ++scpt->reloc_count; | |
5316 | } | |
5317 | } | |
5318 | ||
943284cc DJ |
5319 | /* If we've written this relocation for a readonly section, |
5320 | we need to set DF_TEXTREL again, so that we do not delete the | |
5321 | DT_TEXTREL tag. */ | |
5322 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
5323 | info->flags |= DF_TEXTREL; | |
5324 | ||
b34976b6 | 5325 | return TRUE; |
b49e97c9 TS |
5326 | } |
5327 | \f | |
b49e97c9 TS |
5328 | /* Return the MACH for a MIPS e_flags value. */ |
5329 | ||
5330 | unsigned long | |
9719ad41 | 5331 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
5332 | { |
5333 | switch (flags & EF_MIPS_MACH) | |
5334 | { | |
5335 | case E_MIPS_MACH_3900: | |
5336 | return bfd_mach_mips3900; | |
5337 | ||
5338 | case E_MIPS_MACH_4010: | |
5339 | return bfd_mach_mips4010; | |
5340 | ||
5341 | case E_MIPS_MACH_4100: | |
5342 | return bfd_mach_mips4100; | |
5343 | ||
5344 | case E_MIPS_MACH_4111: | |
5345 | return bfd_mach_mips4111; | |
5346 | ||
00707a0e RS |
5347 | case E_MIPS_MACH_4120: |
5348 | return bfd_mach_mips4120; | |
5349 | ||
b49e97c9 TS |
5350 | case E_MIPS_MACH_4650: |
5351 | return bfd_mach_mips4650; | |
5352 | ||
00707a0e RS |
5353 | case E_MIPS_MACH_5400: |
5354 | return bfd_mach_mips5400; | |
5355 | ||
5356 | case E_MIPS_MACH_5500: | |
5357 | return bfd_mach_mips5500; | |
5358 | ||
0d2e43ed ILT |
5359 | case E_MIPS_MACH_9000: |
5360 | return bfd_mach_mips9000; | |
5361 | ||
b49e97c9 TS |
5362 | case E_MIPS_MACH_SB1: |
5363 | return bfd_mach_mips_sb1; | |
5364 | ||
350cc38d MS |
5365 | case E_MIPS_MACH_LS2E: |
5366 | return bfd_mach_mips_loongson_2e; | |
5367 | ||
5368 | case E_MIPS_MACH_LS2F: | |
5369 | return bfd_mach_mips_loongson_2f; | |
5370 | ||
6f179bd0 AN |
5371 | case E_MIPS_MACH_OCTEON: |
5372 | return bfd_mach_mips_octeon; | |
5373 | ||
b49e97c9 TS |
5374 | default: |
5375 | switch (flags & EF_MIPS_ARCH) | |
5376 | { | |
5377 | default: | |
5378 | case E_MIPS_ARCH_1: | |
5379 | return bfd_mach_mips3000; | |
b49e97c9 TS |
5380 | |
5381 | case E_MIPS_ARCH_2: | |
5382 | return bfd_mach_mips6000; | |
b49e97c9 TS |
5383 | |
5384 | case E_MIPS_ARCH_3: | |
5385 | return bfd_mach_mips4000; | |
b49e97c9 TS |
5386 | |
5387 | case E_MIPS_ARCH_4: | |
5388 | return bfd_mach_mips8000; | |
b49e97c9 TS |
5389 | |
5390 | case E_MIPS_ARCH_5: | |
5391 | return bfd_mach_mips5; | |
b49e97c9 TS |
5392 | |
5393 | case E_MIPS_ARCH_32: | |
5394 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
5395 | |
5396 | case E_MIPS_ARCH_64: | |
5397 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
5398 | |
5399 | case E_MIPS_ARCH_32R2: | |
5400 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
5401 | |
5402 | case E_MIPS_ARCH_64R2: | |
5403 | return bfd_mach_mipsisa64r2; | |
b49e97c9 TS |
5404 | } |
5405 | } | |
5406 | ||
5407 | return 0; | |
5408 | } | |
5409 | ||
5410 | /* Return printable name for ABI. */ | |
5411 | ||
5412 | static INLINE char * | |
9719ad41 | 5413 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
5414 | { |
5415 | flagword flags; | |
5416 | ||
5417 | flags = elf_elfheader (abfd)->e_flags; | |
5418 | switch (flags & EF_MIPS_ABI) | |
5419 | { | |
5420 | case 0: | |
5421 | if (ABI_N32_P (abfd)) | |
5422 | return "N32"; | |
5423 | else if (ABI_64_P (abfd)) | |
5424 | return "64"; | |
5425 | else | |
5426 | return "none"; | |
5427 | case E_MIPS_ABI_O32: | |
5428 | return "O32"; | |
5429 | case E_MIPS_ABI_O64: | |
5430 | return "O64"; | |
5431 | case E_MIPS_ABI_EABI32: | |
5432 | return "EABI32"; | |
5433 | case E_MIPS_ABI_EABI64: | |
5434 | return "EABI64"; | |
5435 | default: | |
5436 | return "unknown abi"; | |
5437 | } | |
5438 | } | |
5439 | \f | |
5440 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
5441 | other is for small objects. All the small objects are kept | |
5442 | together, and then referenced via the gp pointer, which yields | |
5443 | faster assembler code. This is what we use for the small common | |
5444 | section. This approach is copied from ecoff.c. */ | |
5445 | static asection mips_elf_scom_section; | |
5446 | static asymbol mips_elf_scom_symbol; | |
5447 | static asymbol *mips_elf_scom_symbol_ptr; | |
5448 | ||
5449 | /* MIPS ELF also uses an acommon section, which represents an | |
5450 | allocated common symbol which may be overridden by a | |
5451 | definition in a shared library. */ | |
5452 | static asection mips_elf_acom_section; | |
5453 | static asymbol mips_elf_acom_symbol; | |
5454 | static asymbol *mips_elf_acom_symbol_ptr; | |
5455 | ||
738e5348 | 5456 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
5457 | |
5458 | void | |
9719ad41 | 5459 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
5460 | { |
5461 | elf_symbol_type *elfsym; | |
5462 | ||
738e5348 | 5463 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
5464 | elfsym = (elf_symbol_type *) asym; |
5465 | switch (elfsym->internal_elf_sym.st_shndx) | |
5466 | { | |
5467 | case SHN_MIPS_ACOMMON: | |
5468 | /* This section is used in a dynamically linked executable file. | |
5469 | It is an allocated common section. The dynamic linker can | |
5470 | either resolve these symbols to something in a shared | |
5471 | library, or it can just leave them here. For our purposes, | |
5472 | we can consider these symbols to be in a new section. */ | |
5473 | if (mips_elf_acom_section.name == NULL) | |
5474 | { | |
5475 | /* Initialize the acommon section. */ | |
5476 | mips_elf_acom_section.name = ".acommon"; | |
5477 | mips_elf_acom_section.flags = SEC_ALLOC; | |
5478 | mips_elf_acom_section.output_section = &mips_elf_acom_section; | |
5479 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
5480 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
5481 | mips_elf_acom_symbol.name = ".acommon"; | |
5482 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
5483 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
5484 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
5485 | } | |
5486 | asym->section = &mips_elf_acom_section; | |
5487 | break; | |
5488 | ||
5489 | case SHN_COMMON: | |
5490 | /* Common symbols less than the GP size are automatically | |
5491 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
5492 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 5493 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
5494 | || IRIX_COMPAT (abfd) == ict_irix6) |
5495 | break; | |
5496 | /* Fall through. */ | |
5497 | case SHN_MIPS_SCOMMON: | |
5498 | if (mips_elf_scom_section.name == NULL) | |
5499 | { | |
5500 | /* Initialize the small common section. */ | |
5501 | mips_elf_scom_section.name = ".scommon"; | |
5502 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
5503 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
5504 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
5505 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
5506 | mips_elf_scom_symbol.name = ".scommon"; | |
5507 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
5508 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
5509 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
5510 | } | |
5511 | asym->section = &mips_elf_scom_section; | |
5512 | asym->value = elfsym->internal_elf_sym.st_size; | |
5513 | break; | |
5514 | ||
5515 | case SHN_MIPS_SUNDEFINED: | |
5516 | asym->section = bfd_und_section_ptr; | |
5517 | break; | |
5518 | ||
b49e97c9 | 5519 | case SHN_MIPS_TEXT: |
00b4930b TS |
5520 | { |
5521 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
5522 | ||
5523 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
5524 | if (section != NULL) | |
5525 | { | |
5526 | asym->section = section; | |
5527 | /* MIPS_TEXT is a bit special, the address is not an offset | |
5528 | to the base of the .text section. So substract the section | |
5529 | base address to make it an offset. */ | |
5530 | asym->value -= section->vma; | |
5531 | } | |
5532 | } | |
b49e97c9 TS |
5533 | break; |
5534 | ||
5535 | case SHN_MIPS_DATA: | |
00b4930b TS |
5536 | { |
5537 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
5538 | ||
5539 | BFD_ASSERT (SGI_COMPAT (abfd)); | |
5540 | if (section != NULL) | |
5541 | { | |
5542 | asym->section = section; | |
5543 | /* MIPS_DATA is a bit special, the address is not an offset | |
5544 | to the base of the .data section. So substract the section | |
5545 | base address to make it an offset. */ | |
5546 | asym->value -= section->vma; | |
5547 | } | |
5548 | } | |
b49e97c9 | 5549 | break; |
b49e97c9 | 5550 | } |
738e5348 RS |
5551 | |
5552 | /* If this is an odd-valued function symbol, assume it's a MIPS16 one. */ | |
5553 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC | |
5554 | && (asym->value & 1) != 0) | |
5555 | { | |
5556 | asym->value--; | |
5557 | elfsym->internal_elf_sym.st_other | |
5558 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
5559 | } | |
b49e97c9 TS |
5560 | } |
5561 | \f | |
8c946ed5 RS |
5562 | /* Implement elf_backend_eh_frame_address_size. This differs from |
5563 | the default in the way it handles EABI64. | |
5564 | ||
5565 | EABI64 was originally specified as an LP64 ABI, and that is what | |
5566 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
5567 | historically accepted the combination of -mabi=eabi and -mlong32, | |
5568 | and this ILP32 variation has become semi-official over time. | |
5569 | Both forms use elf32 and have pointer-sized FDE addresses. | |
5570 | ||
5571 | If an EABI object was generated by GCC 4.0 or above, it will have | |
5572 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
5573 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
5574 | have no special marking to distinguish them from LP64 objects. | |
5575 | ||
5576 | We don't want users of the official LP64 ABI to be punished for the | |
5577 | existence of the ILP32 variant, but at the same time, we don't want | |
5578 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
5579 | We therefore take the following approach: | |
5580 | ||
5581 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
5582 | determine the pointer size. | |
5583 | ||
5584 | - Otherwise check the type of the first relocation. Assume that | |
5585 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. | |
5586 | ||
5587 | - Otherwise punt. | |
5588 | ||
5589 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
5590 | compilers because, in the kind of output generated by those compilers, | |
5591 | the first relocation will be associated with either a CIE personality | |
5592 | routine or an FDE start address. Furthermore, the compilers never | |
5593 | used a special (non-pointer) encoding for this ABI. | |
5594 | ||
5595 | Checking the relocation type should also be safe because there is no | |
5596 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
5597 | did so. */ | |
5598 | ||
5599 | unsigned int | |
5600 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec) | |
5601 | { | |
5602 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
5603 | return 8; | |
5604 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
5605 | { | |
5606 | bfd_boolean long32_p, long64_p; | |
5607 | ||
5608 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
5609 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
5610 | if (long32_p && long64_p) | |
5611 | return 0; | |
5612 | if (long32_p) | |
5613 | return 4; | |
5614 | if (long64_p) | |
5615 | return 8; | |
5616 | ||
5617 | if (sec->reloc_count > 0 | |
5618 | && elf_section_data (sec)->relocs != NULL | |
5619 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
5620 | == R_MIPS_64)) | |
5621 | return 8; | |
5622 | ||
5623 | return 0; | |
5624 | } | |
5625 | return 4; | |
5626 | } | |
5627 | \f | |
174fd7f9 RS |
5628 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
5629 | relocations against two unnamed section symbols to resolve to the | |
5630 | same address. For example, if we have code like: | |
5631 | ||
5632 | lw $4,%got_disp(.data)($gp) | |
5633 | lw $25,%got_disp(.text)($gp) | |
5634 | jalr $25 | |
5635 | ||
5636 | then the linker will resolve both relocations to .data and the program | |
5637 | will jump there rather than to .text. | |
5638 | ||
5639 | We can work around this problem by giving names to local section symbols. | |
5640 | This is also what the MIPSpro tools do. */ | |
5641 | ||
5642 | bfd_boolean | |
5643 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) | |
5644 | { | |
5645 | return SGI_COMPAT (abfd); | |
5646 | } | |
5647 | \f | |
b49e97c9 TS |
5648 | /* Work over a section just before writing it out. This routine is |
5649 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
5650 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
5651 | a better way. */ | |
5652 | ||
b34976b6 | 5653 | bfd_boolean |
9719ad41 | 5654 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
5655 | { |
5656 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
5657 | && hdr->sh_size > 0) | |
5658 | { | |
5659 | bfd_byte buf[4]; | |
5660 | ||
5661 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
5662 | BFD_ASSERT (hdr->contents == NULL); | |
5663 | ||
5664 | if (bfd_seek (abfd, | |
5665 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
5666 | SEEK_SET) != 0) | |
b34976b6 | 5667 | return FALSE; |
b49e97c9 | 5668 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 5669 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 5670 | return FALSE; |
b49e97c9 TS |
5671 | } |
5672 | ||
5673 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
5674 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
5675 | && mips_elf_section_data (hdr->bfd_section) != NULL |
5676 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
5677 | { |
5678 | bfd_byte *contents, *l, *lend; | |
5679 | ||
f0abc2a1 AM |
5680 | /* We stored the section contents in the tdata field in the |
5681 | set_section_contents routine. We save the section contents | |
5682 | so that we don't have to read them again. | |
b49e97c9 TS |
5683 | At this point we know that elf_gp is set, so we can look |
5684 | through the section contents to see if there is an | |
5685 | ODK_REGINFO structure. */ | |
5686 | ||
f0abc2a1 | 5687 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
5688 | l = contents; |
5689 | lend = contents + hdr->sh_size; | |
5690 | while (l + sizeof (Elf_External_Options) <= lend) | |
5691 | { | |
5692 | Elf_Internal_Options intopt; | |
5693 | ||
5694 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
5695 | &intopt); | |
1bc8074d MR |
5696 | if (intopt.size < sizeof (Elf_External_Options)) |
5697 | { | |
5698 | (*_bfd_error_handler) | |
5699 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
5700 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
5701 | break; | |
5702 | } | |
b49e97c9 TS |
5703 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
5704 | { | |
5705 | bfd_byte buf[8]; | |
5706 | ||
5707 | if (bfd_seek (abfd, | |
5708 | (hdr->sh_offset | |
5709 | + (l - contents) | |
5710 | + sizeof (Elf_External_Options) | |
5711 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
5712 | SEEK_SET) != 0) | |
b34976b6 | 5713 | return FALSE; |
b49e97c9 | 5714 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 5715 | if (bfd_bwrite (buf, 8, abfd) != 8) |
b34976b6 | 5716 | return FALSE; |
b49e97c9 TS |
5717 | } |
5718 | else if (intopt.kind == ODK_REGINFO) | |
5719 | { | |
5720 | bfd_byte buf[4]; | |
5721 | ||
5722 | if (bfd_seek (abfd, | |
5723 | (hdr->sh_offset | |
5724 | + (l - contents) | |
5725 | + sizeof (Elf_External_Options) | |
5726 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
5727 | SEEK_SET) != 0) | |
b34976b6 | 5728 | return FALSE; |
b49e97c9 | 5729 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 5730 | if (bfd_bwrite (buf, 4, abfd) != 4) |
b34976b6 | 5731 | return FALSE; |
b49e97c9 TS |
5732 | } |
5733 | l += intopt.size; | |
5734 | } | |
5735 | } | |
5736 | ||
5737 | if (hdr->bfd_section != NULL) | |
5738 | { | |
5739 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
5740 | ||
5741 | if (strcmp (name, ".sdata") == 0 | |
5742 | || strcmp (name, ".lit8") == 0 | |
5743 | || strcmp (name, ".lit4") == 0) | |
5744 | { | |
5745 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
5746 | hdr->sh_type = SHT_PROGBITS; | |
5747 | } | |
5748 | else if (strcmp (name, ".sbss") == 0) | |
5749 | { | |
5750 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
5751 | hdr->sh_type = SHT_NOBITS; | |
5752 | } | |
5753 | else if (strcmp (name, ".srdata") == 0) | |
5754 | { | |
5755 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; | |
5756 | hdr->sh_type = SHT_PROGBITS; | |
5757 | } | |
5758 | else if (strcmp (name, ".compact_rel") == 0) | |
5759 | { | |
5760 | hdr->sh_flags = 0; | |
5761 | hdr->sh_type = SHT_PROGBITS; | |
5762 | } | |
5763 | else if (strcmp (name, ".rtproc") == 0) | |
5764 | { | |
5765 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
5766 | { | |
5767 | unsigned int adjust; | |
5768 | ||
5769 | adjust = hdr->sh_size % hdr->sh_addralign; | |
5770 | if (adjust != 0) | |
5771 | hdr->sh_size += hdr->sh_addralign - adjust; | |
5772 | } | |
5773 | } | |
5774 | } | |
5775 | ||
b34976b6 | 5776 | return TRUE; |
b49e97c9 TS |
5777 | } |
5778 | ||
5779 | /* Handle a MIPS specific section when reading an object file. This | |
5780 | is called when elfcode.h finds a section with an unknown type. | |
5781 | This routine supports both the 32-bit and 64-bit ELF ABI. | |
5782 | ||
5783 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
5784 | how to. */ | |
5785 | ||
b34976b6 | 5786 | bfd_boolean |
6dc132d9 L |
5787 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
5788 | Elf_Internal_Shdr *hdr, | |
5789 | const char *name, | |
5790 | int shindex) | |
b49e97c9 TS |
5791 | { |
5792 | flagword flags = 0; | |
5793 | ||
5794 | /* There ought to be a place to keep ELF backend specific flags, but | |
5795 | at the moment there isn't one. We just keep track of the | |
5796 | sections by their name, instead. Fortunately, the ABI gives | |
5797 | suggested names for all the MIPS specific sections, so we will | |
5798 | probably get away with this. */ | |
5799 | switch (hdr->sh_type) | |
5800 | { | |
5801 | case SHT_MIPS_LIBLIST: | |
5802 | if (strcmp (name, ".liblist") != 0) | |
b34976b6 | 5803 | return FALSE; |
b49e97c9 TS |
5804 | break; |
5805 | case SHT_MIPS_MSYM: | |
5806 | if (strcmp (name, ".msym") != 0) | |
b34976b6 | 5807 | return FALSE; |
b49e97c9 TS |
5808 | break; |
5809 | case SHT_MIPS_CONFLICT: | |
5810 | if (strcmp (name, ".conflict") != 0) | |
b34976b6 | 5811 | return FALSE; |
b49e97c9 TS |
5812 | break; |
5813 | case SHT_MIPS_GPTAB: | |
0112cd26 | 5814 | if (! CONST_STRNEQ (name, ".gptab.")) |
b34976b6 | 5815 | return FALSE; |
b49e97c9 TS |
5816 | break; |
5817 | case SHT_MIPS_UCODE: | |
5818 | if (strcmp (name, ".ucode") != 0) | |
b34976b6 | 5819 | return FALSE; |
b49e97c9 TS |
5820 | break; |
5821 | case SHT_MIPS_DEBUG: | |
5822 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 5823 | return FALSE; |
b49e97c9 TS |
5824 | flags = SEC_DEBUGGING; |
5825 | break; | |
5826 | case SHT_MIPS_REGINFO: | |
5827 | if (strcmp (name, ".reginfo") != 0 | |
5828 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
b34976b6 | 5829 | return FALSE; |
b49e97c9 TS |
5830 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
5831 | break; | |
5832 | case SHT_MIPS_IFACE: | |
5833 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
b34976b6 | 5834 | return FALSE; |
b49e97c9 TS |
5835 | break; |
5836 | case SHT_MIPS_CONTENT: | |
0112cd26 | 5837 | if (! CONST_STRNEQ (name, ".MIPS.content")) |
b34976b6 | 5838 | return FALSE; |
b49e97c9 TS |
5839 | break; |
5840 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 5841 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b34976b6 | 5842 | return FALSE; |
b49e97c9 TS |
5843 | break; |
5844 | case SHT_MIPS_DWARF: | |
1b315056 | 5845 | if (! CONST_STRNEQ (name, ".debug_") |
355d10dc | 5846 | && ! CONST_STRNEQ (name, ".zdebug_")) |
b34976b6 | 5847 | return FALSE; |
b49e97c9 TS |
5848 | break; |
5849 | case SHT_MIPS_SYMBOL_LIB: | |
5850 | if (strcmp (name, ".MIPS.symlib") != 0) | |
b34976b6 | 5851 | return FALSE; |
b49e97c9 TS |
5852 | break; |
5853 | case SHT_MIPS_EVENTS: | |
0112cd26 NC |
5854 | if (! CONST_STRNEQ (name, ".MIPS.events") |
5855 | && ! CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b34976b6 | 5856 | return FALSE; |
b49e97c9 TS |
5857 | break; |
5858 | default: | |
cc2e31b9 | 5859 | break; |
b49e97c9 TS |
5860 | } |
5861 | ||
6dc132d9 | 5862 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 5863 | return FALSE; |
b49e97c9 TS |
5864 | |
5865 | if (flags) | |
5866 | { | |
5867 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, | |
5868 | (bfd_get_section_flags (abfd, | |
5869 | hdr->bfd_section) | |
5870 | | flags))) | |
b34976b6 | 5871 | return FALSE; |
b49e97c9 TS |
5872 | } |
5873 | ||
5874 | /* FIXME: We should record sh_info for a .gptab section. */ | |
5875 | ||
5876 | /* For a .reginfo section, set the gp value in the tdata information | |
5877 | from the contents of this section. We need the gp value while | |
5878 | processing relocs, so we just get it now. The .reginfo section | |
5879 | is not used in the 64-bit MIPS ELF ABI. */ | |
5880 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
5881 | { | |
5882 | Elf32_External_RegInfo ext; | |
5883 | Elf32_RegInfo s; | |
5884 | ||
9719ad41 RS |
5885 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
5886 | &ext, 0, sizeof ext)) | |
b34976b6 | 5887 | return FALSE; |
b49e97c9 TS |
5888 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
5889 | elf_gp (abfd) = s.ri_gp_value; | |
5890 | } | |
5891 | ||
5892 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
5893 | set the gp value based on what we find. We may see both | |
5894 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
5895 | they should agree. */ | |
5896 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
5897 | { | |
5898 | bfd_byte *contents, *l, *lend; | |
5899 | ||
9719ad41 | 5900 | contents = bfd_malloc (hdr->sh_size); |
b49e97c9 | 5901 | if (contents == NULL) |
b34976b6 | 5902 | return FALSE; |
b49e97c9 | 5903 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, |
9719ad41 | 5904 | 0, hdr->sh_size)) |
b49e97c9 TS |
5905 | { |
5906 | free (contents); | |
b34976b6 | 5907 | return FALSE; |
b49e97c9 TS |
5908 | } |
5909 | l = contents; | |
5910 | lend = contents + hdr->sh_size; | |
5911 | while (l + sizeof (Elf_External_Options) <= lend) | |
5912 | { | |
5913 | Elf_Internal_Options intopt; | |
5914 | ||
5915 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
5916 | &intopt); | |
1bc8074d MR |
5917 | if (intopt.size < sizeof (Elf_External_Options)) |
5918 | { | |
5919 | (*_bfd_error_handler) | |
5920 | (_("%B: Warning: bad `%s' option size %u smaller than its header"), | |
5921 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); | |
5922 | break; | |
5923 | } | |
b49e97c9 TS |
5924 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
5925 | { | |
5926 | Elf64_Internal_RegInfo intreg; | |
5927 | ||
5928 | bfd_mips_elf64_swap_reginfo_in | |
5929 | (abfd, | |
5930 | ((Elf64_External_RegInfo *) | |
5931 | (l + sizeof (Elf_External_Options))), | |
5932 | &intreg); | |
5933 | elf_gp (abfd) = intreg.ri_gp_value; | |
5934 | } | |
5935 | else if (intopt.kind == ODK_REGINFO) | |
5936 | { | |
5937 | Elf32_RegInfo intreg; | |
5938 | ||
5939 | bfd_mips_elf32_swap_reginfo_in | |
5940 | (abfd, | |
5941 | ((Elf32_External_RegInfo *) | |
5942 | (l + sizeof (Elf_External_Options))), | |
5943 | &intreg); | |
5944 | elf_gp (abfd) = intreg.ri_gp_value; | |
5945 | } | |
5946 | l += intopt.size; | |
5947 | } | |
5948 | free (contents); | |
5949 | } | |
5950 | ||
b34976b6 | 5951 | return TRUE; |
b49e97c9 TS |
5952 | } |
5953 | ||
5954 | /* Set the correct type for a MIPS ELF section. We do this by the | |
5955 | section name, which is a hack, but ought to work. This routine is | |
5956 | used by both the 32-bit and the 64-bit ABI. */ | |
5957 | ||
b34976b6 | 5958 | bfd_boolean |
9719ad41 | 5959 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 5960 | { |
0414f35b | 5961 | const char *name = bfd_get_section_name (abfd, sec); |
b49e97c9 TS |
5962 | |
5963 | if (strcmp (name, ".liblist") == 0) | |
5964 | { | |
5965 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 5966 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
5967 | /* The sh_link field is set in final_write_processing. */ |
5968 | } | |
5969 | else if (strcmp (name, ".conflict") == 0) | |
5970 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
0112cd26 | 5971 | else if (CONST_STRNEQ (name, ".gptab.")) |
b49e97c9 TS |
5972 | { |
5973 | hdr->sh_type = SHT_MIPS_GPTAB; | |
5974 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
5975 | /* The sh_info field is set in final_write_processing. */ | |
5976 | } | |
5977 | else if (strcmp (name, ".ucode") == 0) | |
5978 | hdr->sh_type = SHT_MIPS_UCODE; | |
5979 | else if (strcmp (name, ".mdebug") == 0) | |
5980 | { | |
5981 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 5982 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
b49e97c9 TS |
5983 | entsize of 0. FIXME: Does this matter? */ |
5984 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
5985 | hdr->sh_entsize = 0; | |
5986 | else | |
5987 | hdr->sh_entsize = 1; | |
5988 | } | |
5989 | else if (strcmp (name, ".reginfo") == 0) | |
5990 | { | |
5991 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 5992 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
b49e97c9 TS |
5993 | entsize of 0x18. FIXME: Does this matter? */ |
5994 | if (SGI_COMPAT (abfd)) | |
5995 | { | |
5996 | if ((abfd->flags & DYNAMIC) != 0) | |
5997 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
5998 | else | |
5999 | hdr->sh_entsize = 1; | |
6000 | } | |
6001 | else | |
6002 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
6003 | } | |
6004 | else if (SGI_COMPAT (abfd) | |
6005 | && (strcmp (name, ".hash") == 0 | |
6006 | || strcmp (name, ".dynamic") == 0 | |
6007 | || strcmp (name, ".dynstr") == 0)) | |
6008 | { | |
6009 | if (SGI_COMPAT (abfd)) | |
6010 | hdr->sh_entsize = 0; | |
6011 | #if 0 | |
8dc1a139 | 6012 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
6013 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
6014 | #endif | |
6015 | } | |
6016 | else if (strcmp (name, ".got") == 0 | |
6017 | || strcmp (name, ".srdata") == 0 | |
6018 | || strcmp (name, ".sdata") == 0 | |
6019 | || strcmp (name, ".sbss") == 0 | |
6020 | || strcmp (name, ".lit4") == 0 | |
6021 | || strcmp (name, ".lit8") == 0) | |
6022 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
6023 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
6024 | { | |
6025 | hdr->sh_type = SHT_MIPS_IFACE; | |
6026 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6027 | } | |
0112cd26 | 6028 | else if (CONST_STRNEQ (name, ".MIPS.content")) |
b49e97c9 TS |
6029 | { |
6030 | hdr->sh_type = SHT_MIPS_CONTENT; | |
6031 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6032 | /* The sh_info field is set in final_write_processing. */ | |
6033 | } | |
cc2e31b9 | 6034 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
6035 | { |
6036 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
6037 | hdr->sh_entsize = 1; | |
6038 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6039 | } | |
1b315056 CS |
6040 | else if (CONST_STRNEQ (name, ".debug_") |
6041 | || CONST_STRNEQ (name, ".zdebug_")) | |
b5482f21 NC |
6042 | { |
6043 | hdr->sh_type = SHT_MIPS_DWARF; | |
6044 | ||
6045 | /* Irix facilities such as libexc expect a single .debug_frame | |
6046 | per executable, the system ones have NOSTRIP set and the linker | |
6047 | doesn't merge sections with different flags so ... */ | |
6048 | if (SGI_COMPAT (abfd) && CONST_STRNEQ (name, ".debug_frame")) | |
6049 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6050 | } | |
b49e97c9 TS |
6051 | else if (strcmp (name, ".MIPS.symlib") == 0) |
6052 | { | |
6053 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
6054 | /* The sh_link and sh_info fields are set in | |
6055 | final_write_processing. */ | |
6056 | } | |
0112cd26 NC |
6057 | else if (CONST_STRNEQ (name, ".MIPS.events") |
6058 | || CONST_STRNEQ (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
6059 | { |
6060 | hdr->sh_type = SHT_MIPS_EVENTS; | |
6061 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
6062 | /* The sh_link field is set in final_write_processing. */ | |
6063 | } | |
6064 | else if (strcmp (name, ".msym") == 0) | |
6065 | { | |
6066 | hdr->sh_type = SHT_MIPS_MSYM; | |
6067 | hdr->sh_flags |= SHF_ALLOC; | |
6068 | hdr->sh_entsize = 8; | |
6069 | } | |
6070 | ||
7a79a000 TS |
6071 | /* The generic elf_fake_sections will set up REL_HDR using the default |
6072 | kind of relocations. We used to set up a second header for the | |
6073 | non-default kind of relocations here, but only NewABI would use | |
6074 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
6075 | Thus we create those header only on demand now. */ | |
b49e97c9 | 6076 | |
b34976b6 | 6077 | return TRUE; |
b49e97c9 TS |
6078 | } |
6079 | ||
6080 | /* Given a BFD section, try to locate the corresponding ELF section | |
6081 | index. This is used by both the 32-bit and the 64-bit ABI. | |
6082 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
6083 | but for non-PIC objects we will certainly want support for at least | |
6084 | the .scommon section. */ | |
6085 | ||
b34976b6 | 6086 | bfd_boolean |
9719ad41 RS |
6087 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
6088 | asection *sec, int *retval) | |
b49e97c9 TS |
6089 | { |
6090 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
6091 | { | |
6092 | *retval = SHN_MIPS_SCOMMON; | |
b34976b6 | 6093 | return TRUE; |
b49e97c9 TS |
6094 | } |
6095 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) | |
6096 | { | |
6097 | *retval = SHN_MIPS_ACOMMON; | |
b34976b6 | 6098 | return TRUE; |
b49e97c9 | 6099 | } |
b34976b6 | 6100 | return FALSE; |
b49e97c9 TS |
6101 | } |
6102 | \f | |
6103 | /* Hook called by the linker routine which adds symbols from an object | |
6104 | file. We must handle the special MIPS section numbers here. */ | |
6105 | ||
b34976b6 | 6106 | bfd_boolean |
9719ad41 | 6107 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 6108 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
6109 | flagword *flagsp ATTRIBUTE_UNUSED, |
6110 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
6111 | { |
6112 | if (SGI_COMPAT (abfd) | |
6113 | && (abfd->flags & DYNAMIC) != 0 | |
6114 | && strcmp (*namep, "_rld_new_interface") == 0) | |
6115 | { | |
8dc1a139 | 6116 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 6117 | *namep = NULL; |
b34976b6 | 6118 | return TRUE; |
b49e97c9 TS |
6119 | } |
6120 | ||
eedecc07 DD |
6121 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
6122 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
6123 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
6124 | a magic symbol resolved by the linker, we ignore this bogus definition | |
6125 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
6126 | is not done for them. */ | |
6127 | if (!NEWABI_P(abfd) | |
6128 | && (sym->st_shndx == SHN_ABS) | |
6129 | && (strcmp (*namep, "_gp_disp") == 0)) | |
6130 | { | |
6131 | *namep = NULL; | |
6132 | return TRUE; | |
6133 | } | |
6134 | ||
b49e97c9 TS |
6135 | switch (sym->st_shndx) |
6136 | { | |
6137 | case SHN_COMMON: | |
6138 | /* Common symbols less than the GP size are automatically | |
6139 | treated as SHN_MIPS_SCOMMON symbols. */ | |
6140 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 6141 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
6142 | || IRIX_COMPAT (abfd) == ict_irix6) |
6143 | break; | |
6144 | /* Fall through. */ | |
6145 | case SHN_MIPS_SCOMMON: | |
6146 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
6147 | (*secp)->flags |= SEC_IS_COMMON; | |
6148 | *valp = sym->st_size; | |
6149 | break; | |
6150 | ||
6151 | case SHN_MIPS_TEXT: | |
6152 | /* This section is used in a shared object. */ | |
6153 | if (elf_tdata (abfd)->elf_text_section == NULL) | |
6154 | { | |
6155 | asymbol *elf_text_symbol; | |
6156 | asection *elf_text_section; | |
6157 | bfd_size_type amt = sizeof (asection); | |
6158 | ||
6159 | elf_text_section = bfd_zalloc (abfd, amt); | |
6160 | if (elf_text_section == NULL) | |
b34976b6 | 6161 | return FALSE; |
b49e97c9 TS |
6162 | |
6163 | amt = sizeof (asymbol); | |
6164 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
6165 | if (elf_text_symbol == NULL) | |
b34976b6 | 6166 | return FALSE; |
b49e97c9 TS |
6167 | |
6168 | /* Initialize the section. */ | |
6169 | ||
6170 | elf_tdata (abfd)->elf_text_section = elf_text_section; | |
6171 | elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
6172 | ||
6173 | elf_text_section->symbol = elf_text_symbol; | |
6174 | elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol; | |
6175 | ||
6176 | elf_text_section->name = ".text"; | |
6177 | elf_text_section->flags = SEC_NO_FLAGS; | |
6178 | elf_text_section->output_section = NULL; | |
6179 | elf_text_section->owner = abfd; | |
6180 | elf_text_symbol->name = ".text"; | |
6181 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6182 | elf_text_symbol->section = elf_text_section; | |
6183 | } | |
6184 | /* This code used to do *secp = bfd_und_section_ptr if | |
6185 | info->shared. I don't know why, and that doesn't make sense, | |
6186 | so I took it out. */ | |
6187 | *secp = elf_tdata (abfd)->elf_text_section; | |
6188 | break; | |
6189 | ||
6190 | case SHN_MIPS_ACOMMON: | |
6191 | /* Fall through. XXX Can we treat this as allocated data? */ | |
6192 | case SHN_MIPS_DATA: | |
6193 | /* This section is used in a shared object. */ | |
6194 | if (elf_tdata (abfd)->elf_data_section == NULL) | |
6195 | { | |
6196 | asymbol *elf_data_symbol; | |
6197 | asection *elf_data_section; | |
6198 | bfd_size_type amt = sizeof (asection); | |
6199 | ||
6200 | elf_data_section = bfd_zalloc (abfd, amt); | |
6201 | if (elf_data_section == NULL) | |
b34976b6 | 6202 | return FALSE; |
b49e97c9 TS |
6203 | |
6204 | amt = sizeof (asymbol); | |
6205 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
6206 | if (elf_data_symbol == NULL) | |
b34976b6 | 6207 | return FALSE; |
b49e97c9 TS |
6208 | |
6209 | /* Initialize the section. */ | |
6210 | ||
6211 | elf_tdata (abfd)->elf_data_section = elf_data_section; | |
6212 | elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
6213 | ||
6214 | elf_data_section->symbol = elf_data_symbol; | |
6215 | elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol; | |
6216 | ||
6217 | elf_data_section->name = ".data"; | |
6218 | elf_data_section->flags = SEC_NO_FLAGS; | |
6219 | elf_data_section->output_section = NULL; | |
6220 | elf_data_section->owner = abfd; | |
6221 | elf_data_symbol->name = ".data"; | |
6222 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
6223 | elf_data_symbol->section = elf_data_section; | |
6224 | } | |
6225 | /* This code used to do *secp = bfd_und_section_ptr if | |
6226 | info->shared. I don't know why, and that doesn't make sense, | |
6227 | so I took it out. */ | |
6228 | *secp = elf_tdata (abfd)->elf_data_section; | |
6229 | break; | |
6230 | ||
6231 | case SHN_MIPS_SUNDEFINED: | |
6232 | *secp = bfd_und_section_ptr; | |
6233 | break; | |
6234 | } | |
6235 | ||
6236 | if (SGI_COMPAT (abfd) | |
6237 | && ! info->shared | |
f13a99db | 6238 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
6239 | && strcmp (*namep, "__rld_obj_head") == 0) |
6240 | { | |
6241 | struct elf_link_hash_entry *h; | |
14a793b2 | 6242 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6243 | |
6244 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 6245 | bh = NULL; |
b49e97c9 | 6246 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 6247 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, FALSE, |
14a793b2 | 6248 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 6249 | return FALSE; |
14a793b2 AM |
6250 | |
6251 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6252 | h->non_elf = 0; |
6253 | h->def_regular = 1; | |
b49e97c9 TS |
6254 | h->type = STT_OBJECT; |
6255 | ||
c152c796 | 6256 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6257 | return FALSE; |
b49e97c9 | 6258 | |
b34976b6 | 6259 | mips_elf_hash_table (info)->use_rld_obj_head = TRUE; |
b49e97c9 TS |
6260 | } |
6261 | ||
6262 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
6263 | odd. This will cause something like .word SYM to come up with | |
6264 | the right value when it is loaded into the PC. */ | |
30c09090 | 6265 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
b49e97c9 TS |
6266 | ++*valp; |
6267 | ||
b34976b6 | 6268 | return TRUE; |
b49e97c9 TS |
6269 | } |
6270 | ||
6271 | /* This hook function is called before the linker writes out a global | |
6272 | symbol. We mark symbols as small common if appropriate. This is | |
6273 | also where we undo the increment of the value for a mips16 symbol. */ | |
6274 | ||
b34976b6 | 6275 | bfd_boolean |
9719ad41 RS |
6276 | _bfd_mips_elf_link_output_symbol_hook |
6277 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
6278 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
6279 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
6280 | { |
6281 | /* If we see a common symbol, which implies a relocatable link, then | |
6282 | if a symbol was small common in an input file, mark it as small | |
6283 | common in the output file. */ | |
6284 | if (sym->st_shndx == SHN_COMMON | |
6285 | && strcmp (input_sec->name, ".scommon") == 0) | |
6286 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
6287 | ||
30c09090 | 6288 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
79cda7cf | 6289 | sym->st_value &= ~1; |
b49e97c9 | 6290 | |
b34976b6 | 6291 | return TRUE; |
b49e97c9 TS |
6292 | } |
6293 | \f | |
6294 | /* Functions for the dynamic linker. */ | |
6295 | ||
6296 | /* Create dynamic sections when linking against a dynamic object. */ | |
6297 | ||
b34976b6 | 6298 | bfd_boolean |
9719ad41 | 6299 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
6300 | { |
6301 | struct elf_link_hash_entry *h; | |
14a793b2 | 6302 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
6303 | flagword flags; |
6304 | register asection *s; | |
6305 | const char * const *namep; | |
0a44bf69 | 6306 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6307 | |
0a44bf69 | 6308 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
6309 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
6310 | | SEC_LINKER_CREATED | SEC_READONLY); | |
6311 | ||
0a44bf69 RS |
6312 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
6313 | EABI doesn't. */ | |
6314 | if (!htab->is_vxworks) | |
b49e97c9 | 6315 | { |
0a44bf69 RS |
6316 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
6317 | if (s != NULL) | |
6318 | { | |
6319 | if (! bfd_set_section_flags (abfd, s, flags)) | |
6320 | return FALSE; | |
6321 | } | |
b49e97c9 TS |
6322 | } |
6323 | ||
6324 | /* We need to create .got section. */ | |
f4416af6 AO |
6325 | if (! mips_elf_create_got_section (abfd, info, FALSE)) |
6326 | return FALSE; | |
6327 | ||
0a44bf69 | 6328 | if (! mips_elf_rel_dyn_section (info, TRUE)) |
b34976b6 | 6329 | return FALSE; |
b49e97c9 | 6330 | |
b49e97c9 | 6331 | /* Create .stub section. */ |
4e41d0d7 RS |
6332 | s = bfd_make_section_with_flags (abfd, |
6333 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
6334 | flags | SEC_CODE); | |
6335 | if (s == NULL | |
6336 | || ! bfd_set_section_alignment (abfd, s, | |
6337 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
6338 | return FALSE; | |
6339 | htab->sstubs = s; | |
b49e97c9 TS |
6340 | |
6341 | if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none) | |
6342 | && !info->shared | |
6343 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
6344 | { | |
3496cb2a L |
6345 | s = bfd_make_section_with_flags (abfd, ".rld_map", |
6346 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 6347 | if (s == NULL |
b49e97c9 TS |
6348 | || ! bfd_set_section_alignment (abfd, s, |
6349 | MIPS_ELF_LOG_FILE_ALIGN (abfd))) | |
b34976b6 | 6350 | return FALSE; |
b49e97c9 TS |
6351 | } |
6352 | ||
6353 | /* On IRIX5, we adjust add some additional symbols and change the | |
6354 | alignments of several sections. There is no ABI documentation | |
6355 | indicating that this is necessary on IRIX6, nor any evidence that | |
6356 | the linker takes such action. */ | |
6357 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
6358 | { | |
6359 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
6360 | { | |
14a793b2 | 6361 | bh = NULL; |
b49e97c9 | 6362 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 RS |
6363 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
6364 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 6365 | return FALSE; |
14a793b2 AM |
6366 | |
6367 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6368 | h->non_elf = 0; |
6369 | h->def_regular = 1; | |
b49e97c9 TS |
6370 | h->type = STT_SECTION; |
6371 | ||
c152c796 | 6372 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6373 | return FALSE; |
b49e97c9 TS |
6374 | } |
6375 | ||
6376 | /* We need to create a .compact_rel section. */ | |
6377 | if (SGI_COMPAT (abfd)) | |
6378 | { | |
6379 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
b34976b6 | 6380 | return FALSE; |
b49e97c9 TS |
6381 | } |
6382 | ||
44c410de | 6383 | /* Change alignments of some sections. */ |
b49e97c9 TS |
6384 | s = bfd_get_section_by_name (abfd, ".hash"); |
6385 | if (s != NULL) | |
d80dcc6a | 6386 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6387 | s = bfd_get_section_by_name (abfd, ".dynsym"); |
6388 | if (s != NULL) | |
d80dcc6a | 6389 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6390 | s = bfd_get_section_by_name (abfd, ".dynstr"); |
6391 | if (s != NULL) | |
d80dcc6a | 6392 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6393 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
6394 | if (s != NULL) | |
d80dcc6a | 6395 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6396 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
6397 | if (s != NULL) | |
d80dcc6a | 6398 | bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
6399 | } |
6400 | ||
6401 | if (!info->shared) | |
6402 | { | |
14a793b2 AM |
6403 | const char *name; |
6404 | ||
6405 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
6406 | bh = NULL; | |
6407 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 RS |
6408 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
6409 | NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
b34976b6 | 6410 | return FALSE; |
14a793b2 AM |
6411 | |
6412 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6413 | h->non_elf = 0; |
6414 | h->def_regular = 1; | |
b49e97c9 TS |
6415 | h->type = STT_SECTION; |
6416 | ||
c152c796 | 6417 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6418 | return FALSE; |
b49e97c9 TS |
6419 | |
6420 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
6421 | { | |
6422 | /* __rld_map is a four byte word located in the .data section | |
6423 | and is filled in by the rtld to contain a pointer to | |
6424 | the _r_debug structure. Its symbol value will be set in | |
6425 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
6426 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
6427 | BFD_ASSERT (s != NULL); | |
6428 | ||
14a793b2 AM |
6429 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
6430 | bh = NULL; | |
6431 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 | 6432 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, FALSE, |
14a793b2 | 6433 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 6434 | return FALSE; |
14a793b2 AM |
6435 | |
6436 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
6437 | h->non_elf = 0; |
6438 | h->def_regular = 1; | |
b49e97c9 TS |
6439 | h->type = STT_OBJECT; |
6440 | ||
c152c796 | 6441 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6442 | return FALSE; |
b49e97c9 TS |
6443 | } |
6444 | } | |
6445 | ||
0a44bf69 RS |
6446 | if (htab->is_vxworks) |
6447 | { | |
6448 | /* Create the .plt, .rela.plt, .dynbss and .rela.bss sections. | |
6449 | Also create the _PROCEDURE_LINKAGE_TABLE symbol. */ | |
6450 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) | |
6451 | return FALSE; | |
6452 | ||
6453 | /* Cache the sections created above. */ | |
6454 | htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); | |
6455 | htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
6456 | htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
6457 | htab->splt = bfd_get_section_by_name (abfd, ".plt"); | |
6458 | if (!htab->sdynbss | |
6459 | || (!htab->srelbss && !info->shared) | |
6460 | || !htab->srelplt | |
6461 | || !htab->splt) | |
6462 | abort (); | |
6463 | ||
6464 | /* Do the usual VxWorks handling. */ | |
6465 | if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
6466 | return FALSE; | |
6467 | ||
6468 | /* Work out the PLT sizes. */ | |
6469 | if (info->shared) | |
6470 | { | |
6471 | htab->plt_header_size | |
6472 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); | |
6473 | htab->plt_entry_size | |
6474 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
6475 | } | |
6476 | else | |
6477 | { | |
6478 | htab->plt_header_size | |
6479 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); | |
6480 | htab->plt_entry_size | |
6481 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
6482 | } | |
6483 | } | |
6484 | ||
b34976b6 | 6485 | return TRUE; |
b49e97c9 TS |
6486 | } |
6487 | \f | |
c224138d RS |
6488 | /* Return true if relocation REL against section SEC is a REL rather than |
6489 | RELA relocation. RELOCS is the first relocation in the section and | |
6490 | ABFD is the bfd that contains SEC. */ | |
6491 | ||
6492 | static bfd_boolean | |
6493 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, | |
6494 | const Elf_Internal_Rela *relocs, | |
6495 | const Elf_Internal_Rela *rel) | |
6496 | { | |
6497 | Elf_Internal_Shdr *rel_hdr; | |
6498 | const struct elf_backend_data *bed; | |
6499 | ||
6500 | /* To determine which flavor or relocation this is, we depend on the | |
6501 | fact that the INPUT_SECTION's REL_HDR is read before its REL_HDR2. */ | |
6502 | rel_hdr = &elf_section_data (sec)->rel_hdr; | |
6503 | bed = get_elf_backend_data (abfd); | |
6504 | if ((size_t) (rel - relocs) | |
6505 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) | |
6506 | rel_hdr = elf_section_data (sec)->rel_hdr2; | |
6507 | return rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (abfd); | |
6508 | } | |
6509 | ||
6510 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
6511 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
6512 | of the section that REL is against. */ | |
6513 | ||
6514 | static bfd_vma | |
6515 | mips_elf_read_rel_addend (bfd *abfd, const Elf_Internal_Rela *rel, | |
6516 | reloc_howto_type *howto, bfd_byte *contents) | |
6517 | { | |
6518 | bfd_byte *location; | |
6519 | unsigned int r_type; | |
6520 | bfd_vma addend; | |
6521 | ||
6522 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
6523 | location = contents + rel->r_offset; | |
6524 | ||
6525 | /* Get the addend, which is stored in the input file. */ | |
6526 | _bfd_mips16_elf_reloc_unshuffle (abfd, r_type, FALSE, location); | |
6527 | addend = mips_elf_obtain_contents (howto, rel, abfd, contents); | |
6528 | _bfd_mips16_elf_reloc_shuffle (abfd, r_type, FALSE, location); | |
6529 | ||
6530 | return addend & howto->src_mask; | |
6531 | } | |
6532 | ||
6533 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
6534 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
6535 | and update *ADDEND with the final addend. Return true on success | |
6536 | or false if the LO16 could not be found. RELEND is the exclusive | |
6537 | upper bound on the relocations for REL's section. */ | |
6538 | ||
6539 | static bfd_boolean | |
6540 | mips_elf_add_lo16_rel_addend (bfd *abfd, | |
6541 | const Elf_Internal_Rela *rel, | |
6542 | const Elf_Internal_Rela *relend, | |
6543 | bfd_byte *contents, bfd_vma *addend) | |
6544 | { | |
6545 | unsigned int r_type, lo16_type; | |
6546 | const Elf_Internal_Rela *lo16_relocation; | |
6547 | reloc_howto_type *lo16_howto; | |
6548 | bfd_vma l; | |
6549 | ||
6550 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 6551 | if (mips16_reloc_p (r_type)) |
c224138d RS |
6552 | lo16_type = R_MIPS16_LO16; |
6553 | else | |
6554 | lo16_type = R_MIPS_LO16; | |
6555 | ||
6556 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
6557 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
6558 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
6559 | LO16 value.) | |
6560 | ||
6561 | Scan ahead to find a matching LO16 relocation. | |
6562 | ||
6563 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
6564 | be immediately following. However, for the IRIX6 ABI, the next | |
6565 | relocation may be a composed relocation consisting of several | |
6566 | relocations for the same address. In that case, the R_MIPS_LO16 | |
6567 | relocation may occur as one of these. We permit a similar | |
6568 | extension in general, as that is useful for GCC. | |
6569 | ||
6570 | In some cases GCC dead code elimination removes the LO16 but keeps | |
6571 | the corresponding HI16. This is strictly speaking a violation of | |
6572 | the ABI but not immediately harmful. */ | |
6573 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
6574 | if (lo16_relocation == NULL) | |
6575 | return FALSE; | |
6576 | ||
6577 | /* Obtain the addend kept there. */ | |
6578 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, FALSE); | |
6579 | l = mips_elf_read_rel_addend (abfd, lo16_relocation, lo16_howto, contents); | |
6580 | ||
6581 | l <<= lo16_howto->rightshift; | |
6582 | l = _bfd_mips_elf_sign_extend (l, 16); | |
6583 | ||
6584 | *addend <<= 16; | |
6585 | *addend += l; | |
6586 | return TRUE; | |
6587 | } | |
6588 | ||
6589 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
6590 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
6591 | already holds the contents if it is nonull on entry. */ | |
6592 | ||
6593 | static bfd_boolean | |
6594 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) | |
6595 | { | |
6596 | if (*contents) | |
6597 | return TRUE; | |
6598 | ||
6599 | /* Get cached copy if it exists. */ | |
6600 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
6601 | { | |
6602 | *contents = elf_section_data (sec)->this_hdr.contents; | |
6603 | return TRUE; | |
6604 | } | |
6605 | ||
6606 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
6607 | } | |
6608 | ||
b49e97c9 TS |
6609 | /* Look through the relocs for a section during the first phase, and |
6610 | allocate space in the global offset table. */ | |
6611 | ||
b34976b6 | 6612 | bfd_boolean |
9719ad41 RS |
6613 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
6614 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
6615 | { |
6616 | const char *name; | |
6617 | bfd *dynobj; | |
6618 | Elf_Internal_Shdr *symtab_hdr; | |
6619 | struct elf_link_hash_entry **sym_hashes; | |
6620 | struct mips_got_info *g; | |
6621 | size_t extsymoff; | |
6622 | const Elf_Internal_Rela *rel; | |
6623 | const Elf_Internal_Rela *rel_end; | |
6624 | asection *sgot; | |
6625 | asection *sreloc; | |
9c5bfbb7 | 6626 | const struct elf_backend_data *bed; |
0a44bf69 | 6627 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
6628 | bfd_byte *contents; |
6629 | bfd_vma addend; | |
6630 | reloc_howto_type *howto; | |
b49e97c9 | 6631 | |
1049f94e | 6632 | if (info->relocatable) |
b34976b6 | 6633 | return TRUE; |
b49e97c9 | 6634 | |
0a44bf69 | 6635 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
6636 | dynobj = elf_hash_table (info)->dynobj; |
6637 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6638 | sym_hashes = elf_sym_hashes (abfd); | |
6639 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
6640 | ||
738e5348 RS |
6641 | bed = get_elf_backend_data (abfd); |
6642 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; | |
6643 | ||
b49e97c9 TS |
6644 | /* Check for the mips16 stub sections. */ |
6645 | ||
6646 | name = bfd_get_section_name (abfd, sec); | |
b9d58d71 | 6647 | if (FN_STUB_P (name)) |
b49e97c9 TS |
6648 | { |
6649 | unsigned long r_symndx; | |
6650 | ||
6651 | /* Look at the relocation information to figure out which symbol | |
6652 | this is for. */ | |
6653 | ||
738e5348 RS |
6654 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
6655 | if (r_symndx == 0) | |
6656 | { | |
6657 | (*_bfd_error_handler) | |
6658 | (_("%B: Warning: cannot determine the target function for" | |
6659 | " stub section `%s'"), | |
6660 | abfd, name); | |
6661 | bfd_set_error (bfd_error_bad_value); | |
6662 | return FALSE; | |
6663 | } | |
b49e97c9 TS |
6664 | |
6665 | if (r_symndx < extsymoff | |
6666 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6667 | { | |
6668 | asection *o; | |
6669 | ||
6670 | /* This stub is for a local symbol. This stub will only be | |
6671 | needed if there is some relocation in this BFD, other | |
6672 | than a 16 bit function call, which refers to this symbol. */ | |
6673 | for (o = abfd->sections; o != NULL; o = o->next) | |
6674 | { | |
6675 | Elf_Internal_Rela *sec_relocs; | |
6676 | const Elf_Internal_Rela *r, *rend; | |
6677 | ||
6678 | /* We can ignore stub sections when looking for relocs. */ | |
6679 | if ((o->flags & SEC_RELOC) == 0 | |
6680 | || o->reloc_count == 0 | |
738e5348 | 6681 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
6682 | continue; |
6683 | ||
45d6a902 | 6684 | sec_relocs |
9719ad41 | 6685 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 6686 | info->keep_memory); |
b49e97c9 | 6687 | if (sec_relocs == NULL) |
b34976b6 | 6688 | return FALSE; |
b49e97c9 TS |
6689 | |
6690 | rend = sec_relocs + o->reloc_count; | |
6691 | for (r = sec_relocs; r < rend; r++) | |
6692 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 6693 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
6694 | break; |
6695 | ||
6cdc0ccc | 6696 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
6697 | free (sec_relocs); |
6698 | ||
6699 | if (r < rend) | |
6700 | break; | |
6701 | } | |
6702 | ||
6703 | if (o == NULL) | |
6704 | { | |
6705 | /* There is no non-call reloc for this stub, so we do | |
6706 | not need it. Since this function is called before | |
6707 | the linker maps input sections to output sections, we | |
6708 | can easily discard it by setting the SEC_EXCLUDE | |
6709 | flag. */ | |
6710 | sec->flags |= SEC_EXCLUDE; | |
b34976b6 | 6711 | return TRUE; |
b49e97c9 TS |
6712 | } |
6713 | ||
6714 | /* Record this stub in an array of local symbol stubs for | |
6715 | this BFD. */ | |
6716 | if (elf_tdata (abfd)->local_stubs == NULL) | |
6717 | { | |
6718 | unsigned long symcount; | |
6719 | asection **n; | |
6720 | bfd_size_type amt; | |
6721 | ||
6722 | if (elf_bad_symtab (abfd)) | |
6723 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
6724 | else | |
6725 | symcount = symtab_hdr->sh_info; | |
6726 | amt = symcount * sizeof (asection *); | |
9719ad41 | 6727 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 6728 | if (n == NULL) |
b34976b6 | 6729 | return FALSE; |
b49e97c9 TS |
6730 | elf_tdata (abfd)->local_stubs = n; |
6731 | } | |
6732 | ||
b9d58d71 | 6733 | sec->flags |= SEC_KEEP; |
b49e97c9 TS |
6734 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
6735 | ||
6736 | /* We don't need to set mips16_stubs_seen in this case. | |
6737 | That flag is used to see whether we need to look through | |
6738 | the global symbol table for stubs. We don't need to set | |
6739 | it here, because we just have a local stub. */ | |
6740 | } | |
6741 | else | |
6742 | { | |
6743 | struct mips_elf_link_hash_entry *h; | |
6744 | ||
6745 | h = ((struct mips_elf_link_hash_entry *) | |
6746 | sym_hashes[r_symndx - extsymoff]); | |
6747 | ||
973a3492 L |
6748 | while (h->root.root.type == bfd_link_hash_indirect |
6749 | || h->root.root.type == bfd_link_hash_warning) | |
6750 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
6751 | ||
b49e97c9 TS |
6752 | /* H is the symbol this stub is for. */ |
6753 | ||
b9d58d71 TS |
6754 | /* If we already have an appropriate stub for this function, we |
6755 | don't need another one, so we can discard this one. Since | |
6756 | this function is called before the linker maps input sections | |
6757 | to output sections, we can easily discard it by setting the | |
6758 | SEC_EXCLUDE flag. */ | |
6759 | if (h->fn_stub != NULL) | |
6760 | { | |
6761 | sec->flags |= SEC_EXCLUDE; | |
6762 | return TRUE; | |
6763 | } | |
6764 | ||
6765 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 6766 | h->fn_stub = sec; |
b34976b6 | 6767 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; |
b49e97c9 TS |
6768 | } |
6769 | } | |
b9d58d71 | 6770 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
6771 | { |
6772 | unsigned long r_symndx; | |
6773 | struct mips_elf_link_hash_entry *h; | |
6774 | asection **loc; | |
6775 | ||
6776 | /* Look at the relocation information to figure out which symbol | |
6777 | this is for. */ | |
6778 | ||
738e5348 RS |
6779 | r_symndx = mips16_stub_symndx (sec, relocs, rel_end); |
6780 | if (r_symndx == 0) | |
6781 | { | |
6782 | (*_bfd_error_handler) | |
6783 | (_("%B: Warning: cannot determine the target function for" | |
6784 | " stub section `%s'"), | |
6785 | abfd, name); | |
6786 | bfd_set_error (bfd_error_bad_value); | |
6787 | return FALSE; | |
6788 | } | |
b49e97c9 TS |
6789 | |
6790 | if (r_symndx < extsymoff | |
6791 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
6792 | { | |
b9d58d71 | 6793 | asection *o; |
b49e97c9 | 6794 | |
b9d58d71 TS |
6795 | /* This stub is for a local symbol. This stub will only be |
6796 | needed if there is some relocation (R_MIPS16_26) in this BFD | |
6797 | that refers to this symbol. */ | |
6798 | for (o = abfd->sections; o != NULL; o = o->next) | |
6799 | { | |
6800 | Elf_Internal_Rela *sec_relocs; | |
6801 | const Elf_Internal_Rela *r, *rend; | |
6802 | ||
6803 | /* We can ignore stub sections when looking for relocs. */ | |
6804 | if ((o->flags & SEC_RELOC) == 0 | |
6805 | || o->reloc_count == 0 | |
738e5348 | 6806 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
6807 | continue; |
6808 | ||
6809 | sec_relocs | |
6810 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
6811 | info->keep_memory); | |
6812 | if (sec_relocs == NULL) | |
6813 | return FALSE; | |
6814 | ||
6815 | rend = sec_relocs + o->reloc_count; | |
6816 | for (r = sec_relocs; r < rend; r++) | |
6817 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
6818 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
6819 | break; | |
6820 | ||
6821 | if (elf_section_data (o)->relocs != sec_relocs) | |
6822 | free (sec_relocs); | |
6823 | ||
6824 | if (r < rend) | |
6825 | break; | |
6826 | } | |
6827 | ||
6828 | if (o == NULL) | |
6829 | { | |
6830 | /* There is no non-call reloc for this stub, so we do | |
6831 | not need it. Since this function is called before | |
6832 | the linker maps input sections to output sections, we | |
6833 | can easily discard it by setting the SEC_EXCLUDE | |
6834 | flag. */ | |
6835 | sec->flags |= SEC_EXCLUDE; | |
6836 | return TRUE; | |
6837 | } | |
6838 | ||
6839 | /* Record this stub in an array of local symbol call_stubs for | |
6840 | this BFD. */ | |
6841 | if (elf_tdata (abfd)->local_call_stubs == NULL) | |
6842 | { | |
6843 | unsigned long symcount; | |
6844 | asection **n; | |
6845 | bfd_size_type amt; | |
6846 | ||
6847 | if (elf_bad_symtab (abfd)) | |
6848 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
6849 | else | |
6850 | symcount = symtab_hdr->sh_info; | |
6851 | amt = symcount * sizeof (asection *); | |
6852 | n = bfd_zalloc (abfd, amt); | |
6853 | if (n == NULL) | |
6854 | return FALSE; | |
6855 | elf_tdata (abfd)->local_call_stubs = n; | |
6856 | } | |
b49e97c9 | 6857 | |
b9d58d71 TS |
6858 | sec->flags |= SEC_KEEP; |
6859 | elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; | |
b49e97c9 | 6860 | |
b9d58d71 TS |
6861 | /* We don't need to set mips16_stubs_seen in this case. |
6862 | That flag is used to see whether we need to look through | |
6863 | the global symbol table for stubs. We don't need to set | |
6864 | it here, because we just have a local stub. */ | |
6865 | } | |
b49e97c9 | 6866 | else |
b49e97c9 | 6867 | { |
b9d58d71 TS |
6868 | h = ((struct mips_elf_link_hash_entry *) |
6869 | sym_hashes[r_symndx - extsymoff]); | |
6870 | ||
6871 | /* H is the symbol this stub is for. */ | |
6872 | ||
6873 | if (CALL_FP_STUB_P (name)) | |
6874 | loc = &h->call_fp_stub; | |
6875 | else | |
6876 | loc = &h->call_stub; | |
6877 | ||
6878 | /* If we already have an appropriate stub for this function, we | |
6879 | don't need another one, so we can discard this one. Since | |
6880 | this function is called before the linker maps input sections | |
6881 | to output sections, we can easily discard it by setting the | |
6882 | SEC_EXCLUDE flag. */ | |
6883 | if (*loc != NULL) | |
6884 | { | |
6885 | sec->flags |= SEC_EXCLUDE; | |
6886 | return TRUE; | |
6887 | } | |
b49e97c9 | 6888 | |
b9d58d71 TS |
6889 | sec->flags |= SEC_KEEP; |
6890 | *loc = sec; | |
6891 | mips_elf_hash_table (info)->mips16_stubs_seen = TRUE; | |
6892 | } | |
b49e97c9 TS |
6893 | } |
6894 | ||
6895 | if (dynobj == NULL) | |
6896 | { | |
6897 | sgot = NULL; | |
6898 | g = NULL; | |
6899 | } | |
6900 | else | |
6901 | { | |
f4416af6 | 6902 | sgot = mips_elf_got_section (dynobj, FALSE); |
b49e97c9 TS |
6903 | if (sgot == NULL) |
6904 | g = NULL; | |
6905 | else | |
6906 | { | |
f0abc2a1 AM |
6907 | BFD_ASSERT (mips_elf_section_data (sgot) != NULL); |
6908 | g = mips_elf_section_data (sgot)->u.got_info; | |
b49e97c9 TS |
6909 | BFD_ASSERT (g != NULL); |
6910 | } | |
6911 | } | |
6912 | ||
6913 | sreloc = NULL; | |
c224138d | 6914 | contents = NULL; |
b49e97c9 TS |
6915 | for (rel = relocs; rel < rel_end; ++rel) |
6916 | { | |
6917 | unsigned long r_symndx; | |
6918 | unsigned int r_type; | |
6919 | struct elf_link_hash_entry *h; | |
6920 | ||
6921 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
6922 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
6923 | ||
6924 | if (r_symndx < extsymoff) | |
6925 | h = NULL; | |
6926 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
6927 | { | |
6928 | (*_bfd_error_handler) | |
d003868e AM |
6929 | (_("%B: Malformed reloc detected for section %s"), |
6930 | abfd, name); | |
b49e97c9 | 6931 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6932 | return FALSE; |
b49e97c9 TS |
6933 | } |
6934 | else | |
6935 | { | |
6936 | h = sym_hashes[r_symndx - extsymoff]; | |
6937 | ||
6938 | /* This may be an indirect symbol created because of a version. */ | |
6939 | if (h != NULL) | |
6940 | { | |
6941 | while (h->root.type == bfd_link_hash_indirect) | |
6942 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6943 | } | |
6944 | } | |
6945 | ||
6946 | /* Some relocs require a global offset table. */ | |
6947 | if (dynobj == NULL || sgot == NULL) | |
6948 | { | |
6949 | switch (r_type) | |
6950 | { | |
738e5348 RS |
6951 | case R_MIPS16_GOT16: |
6952 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
6953 | case R_MIPS_GOT16: |
6954 | case R_MIPS_CALL16: | |
6955 | case R_MIPS_CALL_HI16: | |
6956 | case R_MIPS_CALL_LO16: | |
6957 | case R_MIPS_GOT_HI16: | |
6958 | case R_MIPS_GOT_LO16: | |
6959 | case R_MIPS_GOT_PAGE: | |
6960 | case R_MIPS_GOT_OFST: | |
6961 | case R_MIPS_GOT_DISP: | |
86324f90 | 6962 | case R_MIPS_TLS_GOTTPREL: |
0f20cc35 DJ |
6963 | case R_MIPS_TLS_GD: |
6964 | case R_MIPS_TLS_LDM: | |
b49e97c9 TS |
6965 | if (dynobj == NULL) |
6966 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
f4416af6 | 6967 | if (! mips_elf_create_got_section (dynobj, info, FALSE)) |
b34976b6 | 6968 | return FALSE; |
b49e97c9 | 6969 | g = mips_elf_got_info (dynobj, &sgot); |
0a44bf69 RS |
6970 | if (htab->is_vxworks && !info->shared) |
6971 | { | |
6972 | (*_bfd_error_handler) | |
6973 | (_("%B: GOT reloc at 0x%lx not expected in executables"), | |
6974 | abfd, (unsigned long) rel->r_offset); | |
6975 | bfd_set_error (bfd_error_bad_value); | |
6976 | return FALSE; | |
6977 | } | |
b49e97c9 TS |
6978 | break; |
6979 | ||
6980 | case R_MIPS_32: | |
6981 | case R_MIPS_REL32: | |
6982 | case R_MIPS_64: | |
0a44bf69 RS |
6983 | /* In VxWorks executables, references to external symbols |
6984 | are handled using copy relocs or PLT stubs, so there's | |
6985 | no need to add a dynamic relocation here. */ | |
b49e97c9 | 6986 | if (dynobj == NULL |
0a44bf69 | 6987 | && (info->shared || (h != NULL && !htab->is_vxworks)) |
b49e97c9 TS |
6988 | && (sec->flags & SEC_ALLOC) != 0) |
6989 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
6990 | break; | |
6991 | ||
6992 | default: | |
6993 | break; | |
6994 | } | |
6995 | } | |
6996 | ||
0a44bf69 RS |
6997 | if (h) |
6998 | { | |
6999 | ((struct mips_elf_link_hash_entry *) h)->is_relocation_target = TRUE; | |
7000 | ||
7001 | /* Relocations against the special VxWorks __GOTT_BASE__ and | |
7002 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
7003 | room for them in .rela.dyn. */ | |
7004 | if (is_gott_symbol (info, h)) | |
7005 | { | |
7006 | if (sreloc == NULL) | |
7007 | { | |
7008 | sreloc = mips_elf_rel_dyn_section (info, TRUE); | |
7009 | if (sreloc == NULL) | |
7010 | return FALSE; | |
7011 | } | |
7012 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
7013 | if (MIPS_ELF_READONLY_SECTION (sec)) |
7014 | /* We tell the dynamic linker that there are | |
7015 | relocations against the text segment. */ | |
7016 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
7017 | } |
7018 | } | |
7019 | else if (r_type == R_MIPS_CALL_LO16 | |
7020 | || r_type == R_MIPS_GOT_LO16 | |
7021 | || r_type == R_MIPS_GOT_DISP | |
738e5348 | 7022 | || (got16_reloc_p (r_type) && htab->is_vxworks)) |
b49e97c9 TS |
7023 | { |
7024 | /* We may need a local GOT entry for this relocation. We | |
7025 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
7026 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
7027 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
7028 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 7029 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 7030 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 7031 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
f4416af6 | 7032 | if (! mips_elf_record_local_got_symbol (abfd, r_symndx, |
0f20cc35 | 7033 | rel->r_addend, g, 0)) |
f4416af6 | 7034 | return FALSE; |
b49e97c9 TS |
7035 | } |
7036 | ||
7037 | switch (r_type) | |
7038 | { | |
7039 | case R_MIPS_CALL16: | |
738e5348 | 7040 | case R_MIPS16_CALL16: |
b49e97c9 TS |
7041 | if (h == NULL) |
7042 | { | |
7043 | (*_bfd_error_handler) | |
d003868e AM |
7044 | (_("%B: CALL16 reloc at 0x%lx not against global symbol"), |
7045 | abfd, (unsigned long) rel->r_offset); | |
b49e97c9 | 7046 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7047 | return FALSE; |
b49e97c9 TS |
7048 | } |
7049 | /* Fall through. */ | |
7050 | ||
7051 | case R_MIPS_CALL_HI16: | |
7052 | case R_MIPS_CALL_LO16: | |
7053 | if (h != NULL) | |
7054 | { | |
0a44bf69 RS |
7055 | /* VxWorks call relocations point the function's .got.plt |
7056 | entry, which will be allocated by adjust_dynamic_symbol. | |
7057 | Otherwise, this symbol requires a global GOT entry. */ | |
8275b357 | 7058 | if ((!htab->is_vxworks || h->forced_local) |
0a44bf69 | 7059 | && !mips_elf_record_global_got_symbol (h, abfd, info, g, 0)) |
b34976b6 | 7060 | return FALSE; |
b49e97c9 TS |
7061 | |
7062 | /* We need a stub, not a plt entry for the undefined | |
7063 | function. But we record it as if it needs plt. See | |
c152c796 | 7064 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 7065 | h->needs_plt = 1; |
b49e97c9 TS |
7066 | h->type = STT_FUNC; |
7067 | } | |
7068 | break; | |
7069 | ||
0fdc1bf1 AO |
7070 | case R_MIPS_GOT_PAGE: |
7071 | /* If this is a global, overridable symbol, GOT_PAGE will | |
7072 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d | 7073 | if (h) |
0fdc1bf1 AO |
7074 | { |
7075 | struct mips_elf_link_hash_entry *hmips = | |
7076 | (struct mips_elf_link_hash_entry *) h; | |
143d77c5 | 7077 | |
0fdc1bf1 AO |
7078 | while (hmips->root.root.type == bfd_link_hash_indirect |
7079 | || hmips->root.root.type == bfd_link_hash_warning) | |
7080 | hmips = (struct mips_elf_link_hash_entry *) | |
7081 | hmips->root.root.u.i.link; | |
143d77c5 | 7082 | |
3a3b6725 | 7083 | /* This symbol is definitely not overridable. */ |
f5385ebf | 7084 | if (hmips->root.def_regular |
0fdc1bf1 | 7085 | && ! (info->shared && ! info->symbolic |
f5385ebf | 7086 | && ! hmips->root.forced_local)) |
c224138d | 7087 | h = NULL; |
0fdc1bf1 AO |
7088 | } |
7089 | /* Fall through. */ | |
7090 | ||
738e5348 | 7091 | case R_MIPS16_GOT16: |
b49e97c9 TS |
7092 | case R_MIPS_GOT16: |
7093 | case R_MIPS_GOT_HI16: | |
7094 | case R_MIPS_GOT_LO16: | |
3a3b6725 | 7095 | if (!h || r_type == R_MIPS_GOT_PAGE) |
c224138d | 7096 | { |
3a3b6725 DJ |
7097 | /* This relocation needs (or may need, if h != NULL) a |
7098 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
7099 | know for sure until we know whether the symbol is | |
7100 | preemptible. */ | |
c224138d RS |
7101 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
7102 | { | |
7103 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
7104 | return FALSE; | |
7105 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, FALSE); | |
7106 | addend = mips_elf_read_rel_addend (abfd, rel, | |
7107 | howto, contents); | |
7108 | if (r_type == R_MIPS_GOT16) | |
7109 | mips_elf_add_lo16_rel_addend (abfd, rel, rel_end, | |
7110 | contents, &addend); | |
7111 | else | |
7112 | addend <<= howto->rightshift; | |
7113 | } | |
7114 | else | |
7115 | addend = rel->r_addend; | |
7116 | if (!mips_elf_record_got_page_entry (abfd, r_symndx, addend, g)) | |
7117 | return FALSE; | |
7118 | break; | |
7119 | } | |
7120 | /* Fall through. */ | |
7121 | ||
b49e97c9 | 7122 | case R_MIPS_GOT_DISP: |
0f20cc35 | 7123 | if (h && ! mips_elf_record_global_got_symbol (h, abfd, info, g, 0)) |
b34976b6 | 7124 | return FALSE; |
b49e97c9 TS |
7125 | break; |
7126 | ||
0f20cc35 DJ |
7127 | case R_MIPS_TLS_GOTTPREL: |
7128 | if (info->shared) | |
7129 | info->flags |= DF_STATIC_TLS; | |
7130 | /* Fall through */ | |
7131 | ||
7132 | case R_MIPS_TLS_LDM: | |
7133 | if (r_type == R_MIPS_TLS_LDM) | |
7134 | { | |
7135 | r_symndx = 0; | |
7136 | h = NULL; | |
7137 | } | |
7138 | /* Fall through */ | |
7139 | ||
7140 | case R_MIPS_TLS_GD: | |
7141 | /* This symbol requires a global offset table entry, or two | |
7142 | for TLS GD relocations. */ | |
7143 | { | |
7144 | unsigned char flag = (r_type == R_MIPS_TLS_GD | |
7145 | ? GOT_TLS_GD | |
7146 | : r_type == R_MIPS_TLS_LDM | |
7147 | ? GOT_TLS_LDM | |
7148 | : GOT_TLS_IE); | |
7149 | if (h != NULL) | |
7150 | { | |
7151 | struct mips_elf_link_hash_entry *hmips = | |
7152 | (struct mips_elf_link_hash_entry *) h; | |
7153 | hmips->tls_type |= flag; | |
7154 | ||
7155 | if (h && ! mips_elf_record_global_got_symbol (h, abfd, info, g, flag)) | |
7156 | return FALSE; | |
7157 | } | |
7158 | else | |
7159 | { | |
7160 | BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != 0); | |
7161 | ||
7162 | if (! mips_elf_record_local_got_symbol (abfd, r_symndx, | |
7163 | rel->r_addend, g, flag)) | |
7164 | return FALSE; | |
7165 | } | |
7166 | } | |
7167 | break; | |
7168 | ||
b49e97c9 TS |
7169 | case R_MIPS_32: |
7170 | case R_MIPS_REL32: | |
7171 | case R_MIPS_64: | |
0a44bf69 RS |
7172 | /* In VxWorks executables, references to external symbols |
7173 | are handled using copy relocs or PLT stubs, so there's | |
7174 | no need to add a .rela.dyn entry for this relocation. */ | |
7175 | if ((info->shared || (h != NULL && !htab->is_vxworks)) | |
738e5348 | 7176 | && !(h && strcmp (h->root.root.string, "__gnu_local_gp") == 0) |
b49e97c9 TS |
7177 | && (sec->flags & SEC_ALLOC) != 0) |
7178 | { | |
7179 | if (sreloc == NULL) | |
7180 | { | |
0a44bf69 | 7181 | sreloc = mips_elf_rel_dyn_section (info, TRUE); |
b49e97c9 | 7182 | if (sreloc == NULL) |
f4416af6 | 7183 | return FALSE; |
b49e97c9 | 7184 | } |
9a59ad6b | 7185 | if (info->shared && h == NULL) |
82f0cfbd EC |
7186 | { |
7187 | /* When creating a shared object, we must copy these | |
7188 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
7189 | relocs. Make room for this reloc in .rel(a).dyn. */ |
7190 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 7191 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7192 | /* We tell the dynamic linker that there are |
7193 | relocations against the text segment. */ | |
7194 | info->flags |= DF_TEXTREL; | |
7195 | } | |
b49e97c9 TS |
7196 | else |
7197 | { | |
7198 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 7199 | |
9a59ad6b DJ |
7200 | /* For a shared object, we must copy this relocation |
7201 | unless the symbol turns out to be undefined and | |
7202 | weak with non-default visibility, in which case | |
7203 | it will be left as zero. | |
7204 | ||
7205 | We could elide R_MIPS_REL32 for locally binding symbols | |
7206 | in shared libraries, but do not yet do so. | |
7207 | ||
7208 | For an executable, we only need to copy this | |
7209 | reloc if the symbol is defined in a dynamic | |
7210 | object. */ | |
b49e97c9 TS |
7211 | hmips = (struct mips_elf_link_hash_entry *) h; |
7212 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 7213 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
7214 | /* We need it to tell the dynamic linker if there |
7215 | are relocations against the text segment. */ | |
7216 | hmips->readonly_reloc = TRUE; | |
b49e97c9 TS |
7217 | } |
7218 | ||
7219 | /* Even though we don't directly need a GOT entry for | |
7220 | this symbol, a symbol must have a dynamic symbol | |
7221 | table index greater that DT_MIPS_GOTSYM if there are | |
0a44bf69 RS |
7222 | dynamic relocations against it. This does not apply |
7223 | to VxWorks, which does not have the usual coupling | |
7224 | between global GOT entries and .dynsym entries. */ | |
7225 | if (h != NULL && !htab->is_vxworks) | |
f4416af6 AO |
7226 | { |
7227 | if (dynobj == NULL) | |
7228 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
7229 | if (! mips_elf_create_got_section (dynobj, info, TRUE)) | |
7230 | return FALSE; | |
7231 | g = mips_elf_got_info (dynobj, &sgot); | |
0f20cc35 | 7232 | if (! mips_elf_record_global_got_symbol (h, abfd, info, g, 0)) |
f4416af6 AO |
7233 | return FALSE; |
7234 | } | |
b49e97c9 TS |
7235 | } |
7236 | ||
7237 | if (SGI_COMPAT (abfd)) | |
7238 | mips_elf_hash_table (info)->compact_rel_size += | |
7239 | sizeof (Elf32_External_crinfo); | |
7240 | break; | |
7241 | ||
0a44bf69 RS |
7242 | case R_MIPS_PC16: |
7243 | if (h) | |
7244 | ((struct mips_elf_link_hash_entry *) h)->is_branch_target = TRUE; | |
7245 | break; | |
7246 | ||
b49e97c9 | 7247 | case R_MIPS_26: |
0a44bf69 RS |
7248 | if (h) |
7249 | ((struct mips_elf_link_hash_entry *) h)->is_branch_target = TRUE; | |
7250 | /* Fall through. */ | |
7251 | ||
b49e97c9 TS |
7252 | case R_MIPS_GPREL16: |
7253 | case R_MIPS_LITERAL: | |
7254 | case R_MIPS_GPREL32: | |
7255 | if (SGI_COMPAT (abfd)) | |
7256 | mips_elf_hash_table (info)->compact_rel_size += | |
7257 | sizeof (Elf32_External_crinfo); | |
7258 | break; | |
7259 | ||
7260 | /* This relocation describes the C++ object vtable hierarchy. | |
7261 | Reconstruct it for later use during GC. */ | |
7262 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 7263 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 7264 | return FALSE; |
b49e97c9 TS |
7265 | break; |
7266 | ||
7267 | /* This relocation describes which C++ vtable entries are actually | |
7268 | used. Record for later use during GC. */ | |
7269 | case R_MIPS_GNU_VTENTRY: | |
d17e0c6e JB |
7270 | BFD_ASSERT (h != NULL); |
7271 | if (h != NULL | |
7272 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 7273 | return FALSE; |
b49e97c9 TS |
7274 | break; |
7275 | ||
7276 | default: | |
7277 | break; | |
7278 | } | |
7279 | ||
7280 | /* We must not create a stub for a symbol that has relocations | |
0a44bf69 RS |
7281 | related to taking the function's address. This doesn't apply to |
7282 | VxWorks, where CALL relocs refer to a .got.plt entry instead of | |
7283 | a normal .got entry. */ | |
7284 | if (!htab->is_vxworks && h != NULL) | |
7285 | switch (r_type) | |
7286 | { | |
7287 | default: | |
7288 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE; | |
7289 | break; | |
738e5348 | 7290 | case R_MIPS16_CALL16: |
0a44bf69 RS |
7291 | case R_MIPS_CALL16: |
7292 | case R_MIPS_CALL_HI16: | |
7293 | case R_MIPS_CALL_LO16: | |
7294 | case R_MIPS_JALR: | |
7295 | break; | |
7296 | } | |
b49e97c9 | 7297 | |
738e5348 RS |
7298 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
7299 | if there is one. We only need to handle global symbols here; | |
7300 | we decide whether to keep or delete stubs for local symbols | |
7301 | when processing the stub's relocations. */ | |
b49e97c9 | 7302 | if (h != NULL |
738e5348 RS |
7303 | && !mips16_call_reloc_p (r_type) |
7304 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
7305 | { |
7306 | struct mips_elf_link_hash_entry *mh; | |
7307 | ||
7308 | mh = (struct mips_elf_link_hash_entry *) h; | |
b34976b6 | 7309 | mh->need_fn_stub = TRUE; |
b49e97c9 TS |
7310 | } |
7311 | } | |
7312 | ||
b34976b6 | 7313 | return TRUE; |
b49e97c9 TS |
7314 | } |
7315 | \f | |
d0647110 | 7316 | bfd_boolean |
9719ad41 RS |
7317 | _bfd_mips_relax_section (bfd *abfd, asection *sec, |
7318 | struct bfd_link_info *link_info, | |
7319 | bfd_boolean *again) | |
d0647110 AO |
7320 | { |
7321 | Elf_Internal_Rela *internal_relocs; | |
7322 | Elf_Internal_Rela *irel, *irelend; | |
7323 | Elf_Internal_Shdr *symtab_hdr; | |
7324 | bfd_byte *contents = NULL; | |
d0647110 AO |
7325 | size_t extsymoff; |
7326 | bfd_boolean changed_contents = FALSE; | |
7327 | bfd_vma sec_start = sec->output_section->vma + sec->output_offset; | |
7328 | Elf_Internal_Sym *isymbuf = NULL; | |
7329 | ||
7330 | /* We are not currently changing any sizes, so only one pass. */ | |
7331 | *again = FALSE; | |
7332 | ||
1049f94e | 7333 | if (link_info->relocatable) |
d0647110 AO |
7334 | return TRUE; |
7335 | ||
9719ad41 | 7336 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
45d6a902 | 7337 | link_info->keep_memory); |
d0647110 AO |
7338 | if (internal_relocs == NULL) |
7339 | return TRUE; | |
7340 | ||
7341 | irelend = internal_relocs + sec->reloc_count | |
7342 | * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel; | |
7343 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7344 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
7345 | ||
7346 | for (irel = internal_relocs; irel < irelend; irel++) | |
7347 | { | |
7348 | bfd_vma symval; | |
7349 | bfd_signed_vma sym_offset; | |
7350 | unsigned int r_type; | |
7351 | unsigned long r_symndx; | |
7352 | asection *sym_sec; | |
7353 | unsigned long instruction; | |
7354 | ||
7355 | /* Turn jalr into bgezal, and jr into beq, if they're marked | |
7356 | with a JALR relocation, that indicate where they jump to. | |
7357 | This saves some pipeline bubbles. */ | |
7358 | r_type = ELF_R_TYPE (abfd, irel->r_info); | |
7359 | if (r_type != R_MIPS_JALR) | |
7360 | continue; | |
7361 | ||
7362 | r_symndx = ELF_R_SYM (abfd, irel->r_info); | |
7363 | /* Compute the address of the jump target. */ | |
7364 | if (r_symndx >= extsymoff) | |
7365 | { | |
7366 | struct mips_elf_link_hash_entry *h | |
7367 | = ((struct mips_elf_link_hash_entry *) | |
7368 | elf_sym_hashes (abfd) [r_symndx - extsymoff]); | |
7369 | ||
7370 | while (h->root.root.type == bfd_link_hash_indirect | |
7371 | || h->root.root.type == bfd_link_hash_warning) | |
7372 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
143d77c5 | 7373 | |
d0647110 AO |
7374 | /* If a symbol is undefined, or if it may be overridden, |
7375 | skip it. */ | |
7376 | if (! ((h->root.root.type == bfd_link_hash_defined | |
7377 | || h->root.root.type == bfd_link_hash_defweak) | |
7378 | && h->root.root.u.def.section) | |
7379 | || (link_info->shared && ! link_info->symbolic | |
f5385ebf | 7380 | && !h->root.forced_local)) |
d0647110 AO |
7381 | continue; |
7382 | ||
7383 | sym_sec = h->root.root.u.def.section; | |
7384 | if (sym_sec->output_section) | |
7385 | symval = (h->root.root.u.def.value | |
7386 | + sym_sec->output_section->vma | |
7387 | + sym_sec->output_offset); | |
7388 | else | |
7389 | symval = h->root.root.u.def.value; | |
7390 | } | |
7391 | else | |
7392 | { | |
7393 | Elf_Internal_Sym *isym; | |
7394 | ||
7395 | /* Read this BFD's symbols if we haven't done so already. */ | |
7396 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
7397 | { | |
7398 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7399 | if (isymbuf == NULL) | |
7400 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
7401 | symtab_hdr->sh_info, 0, | |
7402 | NULL, NULL, NULL); | |
7403 | if (isymbuf == NULL) | |
7404 | goto relax_return; | |
7405 | } | |
7406 | ||
7407 | isym = isymbuf + r_symndx; | |
7408 | if (isym->st_shndx == SHN_UNDEF) | |
7409 | continue; | |
7410 | else if (isym->st_shndx == SHN_ABS) | |
7411 | sym_sec = bfd_abs_section_ptr; | |
7412 | else if (isym->st_shndx == SHN_COMMON) | |
7413 | sym_sec = bfd_com_section_ptr; | |
7414 | else | |
7415 | sym_sec | |
7416 | = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7417 | symval = isym->st_value | |
7418 | + sym_sec->output_section->vma | |
7419 | + sym_sec->output_offset; | |
7420 | } | |
7421 | ||
7422 | /* Compute branch offset, from delay slot of the jump to the | |
7423 | branch target. */ | |
7424 | sym_offset = (symval + irel->r_addend) | |
7425 | - (sec_start + irel->r_offset + 4); | |
7426 | ||
7427 | /* Branch offset must be properly aligned. */ | |
7428 | if ((sym_offset & 3) != 0) | |
7429 | continue; | |
7430 | ||
7431 | sym_offset >>= 2; | |
7432 | ||
7433 | /* Check that it's in range. */ | |
7434 | if (sym_offset < -0x8000 || sym_offset >= 0x8000) | |
7435 | continue; | |
143d77c5 | 7436 | |
d0647110 | 7437 | /* Get the section contents if we haven't done so already. */ |
c224138d RS |
7438 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) |
7439 | goto relax_return; | |
d0647110 AO |
7440 | |
7441 | instruction = bfd_get_32 (abfd, contents + irel->r_offset); | |
7442 | ||
7443 | /* If it was jalr <reg>, turn it into bgezal $zero, <target>. */ | |
7444 | if ((instruction & 0xfc1fffff) == 0x0000f809) | |
7445 | instruction = 0x04110000; | |
7446 | /* If it was jr <reg>, turn it into b <target>. */ | |
7447 | else if ((instruction & 0xfc1fffff) == 0x00000008) | |
7448 | instruction = 0x10000000; | |
7449 | else | |
7450 | continue; | |
7451 | ||
7452 | instruction |= (sym_offset & 0xffff); | |
7453 | bfd_put_32 (abfd, instruction, contents + irel->r_offset); | |
7454 | changed_contents = TRUE; | |
7455 | } | |
7456 | ||
7457 | if (contents != NULL | |
7458 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7459 | { | |
7460 | if (!changed_contents && !link_info->keep_memory) | |
7461 | free (contents); | |
7462 | else | |
7463 | { | |
7464 | /* Cache the section contents for elf_link_input_bfd. */ | |
7465 | elf_section_data (sec)->this_hdr.contents = contents; | |
7466 | } | |
7467 | } | |
7468 | return TRUE; | |
7469 | ||
143d77c5 | 7470 | relax_return: |
eea6121a AM |
7471 | if (contents != NULL |
7472 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7473 | free (contents); | |
d0647110 AO |
7474 | return FALSE; |
7475 | } | |
7476 | \f | |
9a59ad6b DJ |
7477 | /* Allocate space for global sym dynamic relocs. */ |
7478 | ||
7479 | static bfd_boolean | |
7480 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
7481 | { | |
7482 | struct bfd_link_info *info = inf; | |
7483 | bfd *dynobj; | |
7484 | struct mips_elf_link_hash_entry *hmips; | |
7485 | struct mips_elf_link_hash_table *htab; | |
7486 | ||
7487 | htab = mips_elf_hash_table (info); | |
7488 | dynobj = elf_hash_table (info)->dynobj; | |
7489 | hmips = (struct mips_elf_link_hash_entry *) h; | |
7490 | ||
7491 | /* VxWorks executables are handled elsewhere; we only need to | |
7492 | allocate relocations in shared objects. */ | |
7493 | if (htab->is_vxworks && !info->shared) | |
7494 | return TRUE; | |
7495 | ||
7496 | /* If this symbol is defined in a dynamic object, or we are creating | |
7497 | a shared library, we will need to copy any R_MIPS_32 or | |
7498 | R_MIPS_REL32 relocs against it into the output file. */ | |
7499 | if (! info->relocatable | |
7500 | && hmips->possibly_dynamic_relocs != 0 | |
7501 | && (h->root.type == bfd_link_hash_defweak | |
7502 | || !h->def_regular | |
7503 | || info->shared)) | |
7504 | { | |
7505 | bfd_boolean do_copy = TRUE; | |
7506 | ||
7507 | if (h->root.type == bfd_link_hash_undefweak) | |
7508 | { | |
7509 | /* Do not copy relocations for undefined weak symbols with | |
7510 | non-default visibility. */ | |
7511 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7512 | do_copy = FALSE; | |
7513 | ||
7514 | /* Make sure undefined weak symbols are output as a dynamic | |
7515 | symbol in PIEs. */ | |
7516 | else if (h->dynindx == -1 && !h->forced_local) | |
7517 | { | |
7518 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7519 | return FALSE; | |
7520 | } | |
7521 | } | |
7522 | ||
7523 | if (do_copy) | |
7524 | { | |
7525 | mips_elf_allocate_dynamic_relocations | |
7526 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
7527 | if (hmips->readonly_reloc) | |
7528 | /* We tell the dynamic linker that there are relocations | |
7529 | against the text segment. */ | |
7530 | info->flags |= DF_TEXTREL; | |
7531 | } | |
7532 | } | |
7533 | ||
7534 | return TRUE; | |
7535 | } | |
7536 | ||
b49e97c9 TS |
7537 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7538 | regular object. The current definition is in some section of the | |
7539 | dynamic object, but we're not including those sections. We have to | |
7540 | change the definition to something the rest of the link can | |
7541 | understand. */ | |
7542 | ||
b34976b6 | 7543 | bfd_boolean |
9719ad41 RS |
7544 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7545 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
7546 | { |
7547 | bfd *dynobj; | |
7548 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 7549 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7550 | |
5108fc1b | 7551 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
7552 | dynobj = elf_hash_table (info)->dynobj; |
7553 | ||
7554 | /* Make sure we know what is going on here. */ | |
7555 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 7556 | && (h->needs_plt |
f6e332e6 | 7557 | || h->u.weakdef != NULL |
f5385ebf AM |
7558 | || (h->def_dynamic |
7559 | && h->ref_regular | |
7560 | && !h->def_regular))); | |
b49e97c9 | 7561 | |
b49e97c9 | 7562 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
7563 | |
7564 | /* For a function, create a stub, if allowed. */ | |
7565 | if (! hmips->no_fn_stub | |
f5385ebf | 7566 | && h->needs_plt) |
b49e97c9 TS |
7567 | { |
7568 | if (! elf_hash_table (info)->dynamic_sections_created) | |
b34976b6 | 7569 | return TRUE; |
b49e97c9 TS |
7570 | |
7571 | /* If this symbol is not defined in a regular file, then set | |
7572 | the symbol to the stub location. This is required to make | |
7573 | function pointers compare as equal between the normal | |
7574 | executable and the shared library. */ | |
f5385ebf | 7575 | if (!h->def_regular) |
b49e97c9 TS |
7576 | { |
7577 | /* We need .stub section. */ | |
4e41d0d7 RS |
7578 | h->root.u.def.section = htab->sstubs; |
7579 | h->root.u.def.value = htab->sstubs->size; | |
b49e97c9 TS |
7580 | |
7581 | /* XXX Write this stub address somewhere. */ | |
4e41d0d7 | 7582 | h->plt.offset = htab->sstubs->size; |
b49e97c9 TS |
7583 | |
7584 | /* Make room for this stub code. */ | |
4e41d0d7 | 7585 | htab->sstubs->size += htab->function_stub_size; |
b49e97c9 TS |
7586 | |
7587 | /* The last half word of the stub will be filled with the index | |
7588 | of this symbol in .dynsym section. */ | |
b34976b6 | 7589 | return TRUE; |
b49e97c9 TS |
7590 | } |
7591 | } | |
7592 | else if ((h->type == STT_FUNC) | |
f5385ebf | 7593 | && !h->needs_plt) |
b49e97c9 TS |
7594 | { |
7595 | /* This will set the entry for this symbol in the GOT to 0, and | |
7596 | the dynamic linker will take care of this. */ | |
7597 | h->root.u.def.value = 0; | |
b34976b6 | 7598 | return TRUE; |
b49e97c9 TS |
7599 | } |
7600 | ||
7601 | /* If this is a weak symbol, and there is a real definition, the | |
7602 | processor independent code will have arranged for us to see the | |
7603 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7604 | if (h->u.weakdef != NULL) |
b49e97c9 | 7605 | { |
f6e332e6 AM |
7606 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7607 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7608 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7609 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 7610 | return TRUE; |
b49e97c9 TS |
7611 | } |
7612 | ||
7613 | /* This is a reference to a symbol defined by a dynamic object which | |
7614 | is not a function. */ | |
7615 | ||
b34976b6 | 7616 | return TRUE; |
b49e97c9 | 7617 | } |
0a44bf69 RS |
7618 | |
7619 | /* Likewise, for VxWorks. */ | |
7620 | ||
7621 | bfd_boolean | |
7622 | _bfd_mips_vxworks_adjust_dynamic_symbol (struct bfd_link_info *info, | |
7623 | struct elf_link_hash_entry *h) | |
7624 | { | |
7625 | bfd *dynobj; | |
7626 | struct mips_elf_link_hash_entry *hmips; | |
7627 | struct mips_elf_link_hash_table *htab; | |
0a44bf69 RS |
7628 | |
7629 | htab = mips_elf_hash_table (info); | |
7630 | dynobj = elf_hash_table (info)->dynobj; | |
7631 | hmips = (struct mips_elf_link_hash_entry *) h; | |
7632 | ||
7633 | /* Make sure we know what is going on here. */ | |
7634 | BFD_ASSERT (dynobj != NULL | |
7635 | && (h->needs_plt | |
7636 | || h->needs_copy | |
7637 | || h->u.weakdef != NULL | |
7638 | || (h->def_dynamic | |
7639 | && h->ref_regular | |
7640 | && !h->def_regular))); | |
7641 | ||
7642 | /* If the symbol is defined by a dynamic object, we need a PLT stub if | |
7643 | either (a) we want to branch to the symbol or (b) we're linking an | |
7644 | executable that needs a canonical function address. In the latter | |
7645 | case, the canonical address will be the address of the executable's | |
7646 | load stub. */ | |
7647 | if ((hmips->is_branch_target | |
7648 | || (!info->shared | |
7649 | && h->type == STT_FUNC | |
7650 | && hmips->is_relocation_target)) | |
7651 | && h->def_dynamic | |
7652 | && h->ref_regular | |
7653 | && !h->def_regular | |
7654 | && !h->forced_local) | |
7655 | h->needs_plt = 1; | |
7656 | ||
7657 | /* Locally-binding symbols do not need a PLT stub; we can refer to | |
7658 | the functions directly. */ | |
7659 | else if (h->needs_plt | |
7660 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7661 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7662 | && h->root.type == bfd_link_hash_undefweak))) | |
7663 | { | |
7664 | h->needs_plt = 0; | |
7665 | return TRUE; | |
7666 | } | |
7667 | ||
7668 | if (h->needs_plt) | |
7669 | { | |
7670 | /* If this is the first symbol to need a PLT entry, allocate room | |
7671 | for the header, and for the header's .rela.plt.unloaded entries. */ | |
7672 | if (htab->splt->size == 0) | |
7673 | { | |
7674 | htab->splt->size += htab->plt_header_size; | |
7675 | if (!info->shared) | |
7676 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); | |
7677 | } | |
7678 | ||
7679 | /* Assign the next .plt entry to this symbol. */ | |
7680 | h->plt.offset = htab->splt->size; | |
7681 | htab->splt->size += htab->plt_entry_size; | |
7682 | ||
7683 | /* If the output file has no definition of the symbol, set the | |
131eb6b7 NS |
7684 | symbol's value to the address of the stub. Point at the PLT |
7685 | load stub rather than the lazy resolution stub; this stub | |
7686 | will become the canonical function address. */ | |
7687 | if (!info->shared && !h->def_regular) | |
0a44bf69 RS |
7688 | { |
7689 | h->root.u.def.section = htab->splt; | |
7690 | h->root.u.def.value = h->plt.offset; | |
131eb6b7 | 7691 | h->root.u.def.value += 8; |
0a44bf69 RS |
7692 | } |
7693 | ||
7694 | /* Make room for the .got.plt entry and the R_JUMP_SLOT relocation. */ | |
7695 | htab->sgotplt->size += 4; | |
7696 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
7697 | ||
7698 | /* Make room for the .rela.plt.unloaded relocations. */ | |
7699 | if (!info->shared) | |
7700 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); | |
7701 | ||
7702 | return TRUE; | |
7703 | } | |
7704 | ||
7705 | /* If a function symbol is defined by a dynamic object, and we do not | |
7706 | need a PLT stub for it, the symbol's value should be zero. */ | |
7707 | if (h->type == STT_FUNC | |
7708 | && h->def_dynamic | |
7709 | && h->ref_regular | |
7710 | && !h->def_regular) | |
7711 | { | |
7712 | h->root.u.def.value = 0; | |
7713 | return TRUE; | |
7714 | } | |
7715 | ||
7716 | /* If this is a weak symbol, and there is a real definition, the | |
7717 | processor independent code will have arranged for us to see the | |
7718 | real definition first, and we can just use the same value. */ | |
7719 | if (h->u.weakdef != NULL) | |
7720 | { | |
7721 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
7722 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7723 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7724 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
7725 | return TRUE; | |
7726 | } | |
7727 | ||
7728 | /* This is a reference to a symbol defined by a dynamic object which | |
7729 | is not a function. */ | |
7730 | if (info->shared) | |
7731 | return TRUE; | |
7732 | ||
7733 | /* We must allocate the symbol in our .dynbss section, which will | |
7734 | become part of the .bss section of the executable. There will be | |
7735 | an entry for this symbol in the .dynsym section. The dynamic | |
7736 | object will contain position independent code, so all references | |
7737 | from the dynamic object to this symbol will go through the global | |
7738 | offset table. The dynamic linker will use the .dynsym entry to | |
7739 | determine the address it must put in the global offset table, so | |
7740 | both the dynamic object and the regular object will refer to the | |
7741 | same memory location for the variable. */ | |
7742 | ||
7743 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
7744 | { | |
7745 | htab->srelbss->size += sizeof (Elf32_External_Rela); | |
7746 | h->needs_copy = 1; | |
7747 | } | |
7748 | ||
027297b7 | 7749 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
0a44bf69 | 7750 | } |
b49e97c9 | 7751 | \f |
5108fc1b RS |
7752 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
7753 | The number might be exact or a worst-case estimate, depending on how | |
7754 | much information is available to elf_backend_omit_section_dynsym at | |
7755 | the current linking stage. */ | |
7756 | ||
7757 | static bfd_size_type | |
7758 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
7759 | { | |
7760 | bfd_size_type count; | |
7761 | ||
7762 | count = 0; | |
7763 | if (info->shared || elf_hash_table (info)->is_relocatable_executable) | |
7764 | { | |
7765 | asection *p; | |
7766 | const struct elf_backend_data *bed; | |
7767 | ||
7768 | bed = get_elf_backend_data (output_bfd); | |
7769 | for (p = output_bfd->sections; p ; p = p->next) | |
7770 | if ((p->flags & SEC_EXCLUDE) == 0 | |
7771 | && (p->flags & SEC_ALLOC) != 0 | |
7772 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) | |
7773 | ++count; | |
7774 | } | |
7775 | return count; | |
7776 | } | |
7777 | ||
b49e97c9 TS |
7778 | /* This function is called after all the input files have been read, |
7779 | and the input sections have been assigned to output sections. We | |
7780 | check for any mips16 stub sections that we can discard. */ | |
7781 | ||
b34976b6 | 7782 | bfd_boolean |
9719ad41 RS |
7783 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
7784 | struct bfd_link_info *info) | |
b49e97c9 TS |
7785 | { |
7786 | asection *ri; | |
7787 | ||
f4416af6 AO |
7788 | bfd *dynobj; |
7789 | asection *s; | |
7790 | struct mips_got_info *g; | |
7791 | int i; | |
7792 | bfd_size_type loadable_size = 0; | |
c224138d | 7793 | bfd_size_type page_gotno; |
5108fc1b | 7794 | bfd_size_type dynsymcount; |
f4416af6 | 7795 | bfd *sub; |
0f20cc35 | 7796 | struct mips_elf_count_tls_arg count_tls_arg; |
0a44bf69 RS |
7797 | struct mips_elf_link_hash_table *htab; |
7798 | ||
7799 | htab = mips_elf_hash_table (info); | |
f4416af6 | 7800 | |
b49e97c9 TS |
7801 | /* The .reginfo section has a fixed size. */ |
7802 | ri = bfd_get_section_by_name (output_bfd, ".reginfo"); | |
7803 | if (ri != NULL) | |
9719ad41 | 7804 | bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); |
b49e97c9 | 7805 | |
1049f94e | 7806 | if (! (info->relocatable |
f4416af6 AO |
7807 | || ! mips_elf_hash_table (info)->mips16_stubs_seen)) |
7808 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
738e5348 | 7809 | mips_elf_check_mips16_stubs, info); |
f4416af6 AO |
7810 | |
7811 | dynobj = elf_hash_table (info)->dynobj; | |
7812 | if (dynobj == NULL) | |
7813 | /* Relocatable links don't have it. */ | |
7814 | return TRUE; | |
143d77c5 | 7815 | |
f4416af6 AO |
7816 | g = mips_elf_got_info (dynobj, &s); |
7817 | if (s == NULL) | |
b34976b6 | 7818 | return TRUE; |
b49e97c9 | 7819 | |
f4416af6 AO |
7820 | /* Calculate the total loadable size of the output. That |
7821 | will give us the maximum number of GOT_PAGE entries | |
7822 | required. */ | |
7823 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
7824 | { | |
7825 | asection *subsection; | |
7826 | ||
7827 | for (subsection = sub->sections; | |
7828 | subsection; | |
7829 | subsection = subsection->next) | |
7830 | { | |
7831 | if ((subsection->flags & SEC_ALLOC) == 0) | |
7832 | continue; | |
eea6121a | 7833 | loadable_size += ((subsection->size + 0xf) |
f4416af6 AO |
7834 | &~ (bfd_size_type) 0xf); |
7835 | } | |
7836 | } | |
7837 | ||
7838 | /* There has to be a global GOT entry for every symbol with | |
7839 | a dynamic symbol table index of DT_MIPS_GOTSYM or | |
7840 | higher. Therefore, it make sense to put those symbols | |
7841 | that need GOT entries at the end of the symbol table. We | |
7842 | do that here. */ | |
7843 | if (! mips_elf_sort_hash_table (info, 1)) | |
7844 | return FALSE; | |
7845 | ||
7846 | if (g->global_gotsym != NULL) | |
7847 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; | |
7848 | else | |
7849 | /* If there are no global symbols, or none requiring | |
7850 | relocations, then GLOBAL_GOTSYM will be NULL. */ | |
7851 | i = 0; | |
7852 | ||
5108fc1b RS |
7853 | /* Get a worst-case estimate of the number of dynamic symbols needed. |
7854 | At this point, dynsymcount does not account for section symbols | |
7855 | and count_section_dynsyms may overestimate the number that will | |
7856 | be needed. */ | |
7857 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
7858 | + count_section_dynsyms (output_bfd, info)); | |
7859 | ||
7860 | /* Determine the size of one stub entry. */ | |
7861 | htab->function_stub_size = (dynsymcount > 0x10000 | |
7862 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
7863 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
7864 | ||
f4416af6 AO |
7865 | /* In the worst case, we'll get one stub per dynamic symbol, plus |
7866 | one to account for the dummy entry at the end required by IRIX | |
7867 | rld. */ | |
5108fc1b | 7868 | loadable_size += htab->function_stub_size * (i + 1); |
f4416af6 | 7869 | |
0a44bf69 | 7870 | if (htab->is_vxworks) |
738e5348 | 7871 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
7872 | relocations against local symbols evaluate to "G", and the EABI does |
7873 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 7874 | page_gotno = 0; |
0a44bf69 RS |
7875 | else |
7876 | /* Assume there are two loadable segments consisting of contiguous | |
7877 | sections. Is 5 enough? */ | |
c224138d RS |
7878 | page_gotno = (loadable_size >> 16) + 5; |
7879 | ||
7880 | /* Choose the smaller of the two estimates; both are intended to be | |
7881 | conservative. */ | |
7882 | if (page_gotno > g->page_gotno) | |
7883 | page_gotno = g->page_gotno; | |
f4416af6 | 7884 | |
c224138d | 7885 | g->local_gotno += page_gotno; |
eea6121a | 7886 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
7887 | |
7888 | g->global_gotno = i; | |
eea6121a | 7889 | s->size += i * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 | 7890 | |
0f20cc35 DJ |
7891 | /* We need to calculate tls_gotno for global symbols at this point |
7892 | instead of building it up earlier, to avoid doublecounting | |
7893 | entries for one global symbol from multiple input files. */ | |
7894 | count_tls_arg.info = info; | |
7895 | count_tls_arg.needed = 0; | |
7896 | elf_link_hash_traverse (elf_hash_table (info), | |
7897 | mips_elf_count_global_tls_entries, | |
7898 | &count_tls_arg); | |
7899 | g->tls_gotno += count_tls_arg.needed; | |
7900 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
7901 | ||
7902 | mips_elf_resolve_final_got_entries (g); | |
7903 | ||
0a44bf69 RS |
7904 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
7905 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
7906 | dynamic loader. */ | |
7907 | if (!htab->is_vxworks && s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 7908 | { |
c224138d | 7909 | if (! mips_elf_multi_got (output_bfd, info, g, s, page_gotno)) |
0f20cc35 DJ |
7910 | return FALSE; |
7911 | } | |
7912 | else | |
7913 | { | |
7914 | /* Set up TLS entries for the first GOT. */ | |
7915 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; | |
7916 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, g); | |
7917 | } | |
8275b357 | 7918 | htab->computed_got_sizes = TRUE; |
b49e97c9 | 7919 | |
b34976b6 | 7920 | return TRUE; |
b49e97c9 TS |
7921 | } |
7922 | ||
7923 | /* Set the sizes of the dynamic sections. */ | |
7924 | ||
b34976b6 | 7925 | bfd_boolean |
9719ad41 RS |
7926 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
7927 | struct bfd_link_info *info) | |
b49e97c9 TS |
7928 | { |
7929 | bfd *dynobj; | |
0a44bf69 | 7930 | asection *s, *sreldyn; |
b34976b6 | 7931 | bfd_boolean reltext; |
0a44bf69 | 7932 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 7933 | |
0a44bf69 | 7934 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
7935 | dynobj = elf_hash_table (info)->dynobj; |
7936 | BFD_ASSERT (dynobj != NULL); | |
7937 | ||
7938 | if (elf_hash_table (info)->dynamic_sections_created) | |
7939 | { | |
7940 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 7941 | if (info->executable) |
b49e97c9 TS |
7942 | { |
7943 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7944 | BFD_ASSERT (s != NULL); | |
eea6121a | 7945 | s->size |
b49e97c9 TS |
7946 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
7947 | s->contents | |
7948 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
7949 | } | |
4e41d0d7 RS |
7950 | } |
7951 | ||
7952 | /* IRIX rld assumes that the function stub isn't at the end | |
7953 | of the .text section, so add a dummy entry to the end. */ | |
7954 | if (htab->sstubs && htab->sstubs->size > 0) | |
7955 | htab->sstubs->size += htab->function_stub_size; | |
b49e97c9 | 7956 | |
9a59ad6b DJ |
7957 | /* Allocate space for global sym dynamic relocs. */ |
7958 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (PTR) info); | |
7959 | ||
b49e97c9 TS |
7960 | /* The check_relocs and adjust_dynamic_symbol entry points have |
7961 | determined the sizes of the various dynamic sections. Allocate | |
7962 | memory for them. */ | |
b34976b6 | 7963 | reltext = FALSE; |
0a44bf69 | 7964 | sreldyn = NULL; |
b49e97c9 TS |
7965 | for (s = dynobj->sections; s != NULL; s = s->next) |
7966 | { | |
7967 | const char *name; | |
b49e97c9 TS |
7968 | |
7969 | /* It's OK to base decisions on the section name, because none | |
7970 | of the dynobj section names depend upon the input files. */ | |
7971 | name = bfd_get_section_name (dynobj, s); | |
7972 | ||
7973 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7974 | continue; | |
7975 | ||
0112cd26 | 7976 | if (CONST_STRNEQ (name, ".rel")) |
b49e97c9 | 7977 | { |
c456f082 | 7978 | if (s->size != 0) |
b49e97c9 TS |
7979 | { |
7980 | const char *outname; | |
7981 | asection *target; | |
7982 | ||
7983 | /* If this relocation section applies to a read only | |
7984 | section, then we probably need a DT_TEXTREL entry. | |
0a44bf69 | 7985 | If the relocation section is .rel(a).dyn, we always |
b49e97c9 TS |
7986 | assert a DT_TEXTREL entry rather than testing whether |
7987 | there exists a relocation to a read only section or | |
7988 | not. */ | |
7989 | outname = bfd_get_section_name (output_bfd, | |
7990 | s->output_section); | |
7991 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
7992 | if ((target != NULL | |
7993 | && (target->flags & SEC_READONLY) != 0 | |
7994 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 7995 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
b34976b6 | 7996 | reltext = TRUE; |
b49e97c9 TS |
7997 | |
7998 | /* We use the reloc_count field as a counter if we need | |
7999 | to copy relocs into the output file. */ | |
0a44bf69 | 8000 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 8001 | s->reloc_count = 0; |
f4416af6 AO |
8002 | |
8003 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
8004 | sort relocations, but in a different way than we do, | |
8005 | and before we're done creating relocations. Also, it | |
8006 | will move them around between input sections' | |
8007 | relocation's contents, so our sorting would be | |
8008 | broken, so don't let it run. */ | |
8009 | info->combreloc = 0; | |
b49e97c9 TS |
8010 | } |
8011 | } | |
0a44bf69 RS |
8012 | else if (htab->is_vxworks && strcmp (name, ".got") == 0) |
8013 | { | |
8014 | /* Executables do not need a GOT. */ | |
8015 | if (info->shared) | |
8016 | { | |
8017 | /* Allocate relocations for all but the reserved entries. */ | |
8018 | struct mips_got_info *g; | |
8019 | unsigned int count; | |
8020 | ||
8021 | g = mips_elf_got_info (dynobj, NULL); | |
8022 | count = (g->global_gotno | |
8023 | + g->local_gotno | |
8024 | - MIPS_RESERVED_GOTNO (info)); | |
8025 | mips_elf_allocate_dynamic_relocations (dynobj, info, count); | |
8026 | } | |
8027 | } | |
0112cd26 | 8028 | else if (!htab->is_vxworks && CONST_STRNEQ (name, ".got")) |
b49e97c9 | 8029 | { |
f4416af6 AO |
8030 | /* _bfd_mips_elf_always_size_sections() has already done |
8031 | most of the work, but some symbols may have been mapped | |
8032 | to versions that we must now resolve in the got_entries | |
8033 | hash tables. */ | |
8034 | struct mips_got_info *gg = mips_elf_got_info (dynobj, NULL); | |
8035 | struct mips_got_info *g = gg; | |
8036 | struct mips_elf_set_global_got_offset_arg set_got_offset_arg; | |
8037 | unsigned int needed_relocs = 0; | |
143d77c5 | 8038 | |
f4416af6 | 8039 | if (gg->next) |
b49e97c9 | 8040 | { |
f4416af6 AO |
8041 | set_got_offset_arg.value = MIPS_ELF_GOT_SIZE (output_bfd); |
8042 | set_got_offset_arg.info = info; | |
b49e97c9 | 8043 | |
0f20cc35 DJ |
8044 | /* NOTE 2005-02-03: How can this call, or the next, ever |
8045 | find any indirect entries to resolve? They were all | |
8046 | resolved in mips_elf_multi_got. */ | |
f4416af6 AO |
8047 | mips_elf_resolve_final_got_entries (gg); |
8048 | for (g = gg->next; g && g->next != gg; g = g->next) | |
b49e97c9 | 8049 | { |
f4416af6 AO |
8050 | unsigned int save_assign; |
8051 | ||
8052 | mips_elf_resolve_final_got_entries (g); | |
8053 | ||
8054 | /* Assign offsets to global GOT entries. */ | |
8055 | save_assign = g->assigned_gotno; | |
8056 | g->assigned_gotno = g->local_gotno; | |
8057 | set_got_offset_arg.g = g; | |
8058 | set_got_offset_arg.needed_relocs = 0; | |
8059 | htab_traverse (g->got_entries, | |
8060 | mips_elf_set_global_got_offset, | |
8061 | &set_got_offset_arg); | |
8062 | needed_relocs += set_got_offset_arg.needed_relocs; | |
8063 | BFD_ASSERT (g->assigned_gotno - g->local_gotno | |
8064 | <= g->global_gotno); | |
8065 | ||
8066 | g->assigned_gotno = save_assign; | |
8067 | if (info->shared) | |
8068 | { | |
8069 | needed_relocs += g->local_gotno - g->assigned_gotno; | |
8070 | BFD_ASSERT (g->assigned_gotno == g->next->local_gotno | |
8071 | + g->next->global_gotno | |
0f20cc35 | 8072 | + g->next->tls_gotno |
0a44bf69 | 8073 | + MIPS_RESERVED_GOTNO (info)); |
f4416af6 | 8074 | } |
b49e97c9 | 8075 | } |
0f20cc35 DJ |
8076 | } |
8077 | else | |
8078 | { | |
8079 | struct mips_elf_count_tls_arg arg; | |
8080 | arg.info = info; | |
8081 | arg.needed = 0; | |
b49e97c9 | 8082 | |
0f20cc35 DJ |
8083 | htab_traverse (gg->got_entries, mips_elf_count_local_tls_relocs, |
8084 | &arg); | |
8085 | elf_link_hash_traverse (elf_hash_table (info), | |
8086 | mips_elf_count_global_tls_relocs, | |
8087 | &arg); | |
8088 | ||
8089 | needed_relocs += arg.needed; | |
f4416af6 | 8090 | } |
0f20cc35 DJ |
8091 | |
8092 | if (needed_relocs) | |
0a44bf69 RS |
8093 | mips_elf_allocate_dynamic_relocations (dynobj, info, |
8094 | needed_relocs); | |
b49e97c9 | 8095 | } |
b49e97c9 TS |
8096 | else if (! info->shared |
8097 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
0112cd26 | 8098 | && CONST_STRNEQ (name, ".rld_map")) |
b49e97c9 | 8099 | { |
5108fc1b | 8100 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 8101 | rtld to contain a pointer to the _r_debug structure. */ |
eea6121a | 8102 | s->size += 4; |
b49e97c9 TS |
8103 | } |
8104 | else if (SGI_COMPAT (output_bfd) | |
0112cd26 | 8105 | && CONST_STRNEQ (name, ".compact_rel")) |
eea6121a | 8106 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
0112cd26 | 8107 | else if (! CONST_STRNEQ (name, ".init") |
0a44bf69 | 8108 | && s != htab->sgotplt |
4e41d0d7 RS |
8109 | && s != htab->splt |
8110 | && s != htab->sstubs) | |
b49e97c9 TS |
8111 | { |
8112 | /* It's not one of our sections, so don't allocate space. */ | |
8113 | continue; | |
8114 | } | |
8115 | ||
c456f082 | 8116 | if (s->size == 0) |
b49e97c9 | 8117 | { |
8423293d | 8118 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
8119 | continue; |
8120 | } | |
8121 | ||
c456f082 AM |
8122 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
8123 | continue; | |
8124 | ||
0a44bf69 RS |
8125 | /* Allocate memory for this section last, since we may increase its |
8126 | size above. */ | |
8127 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) == 0) | |
8128 | { | |
8129 | sreldyn = s; | |
8130 | continue; | |
8131 | } | |
8132 | ||
b49e97c9 | 8133 | /* Allocate memory for the section contents. */ |
eea6121a | 8134 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 8135 | if (s->contents == NULL) |
b49e97c9 TS |
8136 | { |
8137 | bfd_set_error (bfd_error_no_memory); | |
b34976b6 | 8138 | return FALSE; |
b49e97c9 TS |
8139 | } |
8140 | } | |
8141 | ||
0a44bf69 RS |
8142 | /* Allocate memory for the .rel(a).dyn section. */ |
8143 | if (sreldyn != NULL) | |
8144 | { | |
8145 | sreldyn->contents = bfd_zalloc (dynobj, sreldyn->size); | |
8146 | if (sreldyn->contents == NULL) | |
8147 | { | |
8148 | bfd_set_error (bfd_error_no_memory); | |
8149 | return FALSE; | |
8150 | } | |
8151 | } | |
8152 | ||
b49e97c9 TS |
8153 | if (elf_hash_table (info)->dynamic_sections_created) |
8154 | { | |
8155 | /* Add some entries to the .dynamic section. We fill in the | |
8156 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
8157 | must add the entries now so that we get the correct size for | |
5750dcec | 8158 | the .dynamic section. */ |
af5978fb RS |
8159 | |
8160 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec DJ |
8161 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
8162 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and GDB only | |
8163 | looks at the first one it sees. */ | |
af5978fb RS |
8164 | if (!info->shared |
8165 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) | |
8166 | return FALSE; | |
b49e97c9 | 8167 | |
5750dcec DJ |
8168 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
8169 | used by the debugger. */ | |
8170 | if (info->executable | |
8171 | && !SGI_COMPAT (output_bfd) | |
8172 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
8173 | return FALSE; | |
8174 | ||
0a44bf69 | 8175 | if (reltext && (SGI_COMPAT (output_bfd) || htab->is_vxworks)) |
b49e97c9 TS |
8176 | info->flags |= DF_TEXTREL; |
8177 | ||
8178 | if ((info->flags & DF_TEXTREL) != 0) | |
8179 | { | |
8180 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
b34976b6 | 8181 | return FALSE; |
943284cc DJ |
8182 | |
8183 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
8184 | write out an actual text relocation; we may not, because | |
8185 | at this point we do not know whether e.g. any .eh_frame | |
8186 | absolute relocations have been converted to PC-relative. */ | |
8187 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
8188 | } |
8189 | ||
8190 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
b34976b6 | 8191 | return FALSE; |
b49e97c9 | 8192 | |
0a44bf69 | 8193 | if (htab->is_vxworks) |
b49e97c9 | 8194 | { |
0a44bf69 RS |
8195 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
8196 | use any of the DT_MIPS_* tags. */ | |
8197 | if (mips_elf_rel_dyn_section (info, FALSE)) | |
8198 | { | |
8199 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
8200 | return FALSE; | |
b49e97c9 | 8201 | |
0a44bf69 RS |
8202 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
8203 | return FALSE; | |
b49e97c9 | 8204 | |
0a44bf69 RS |
8205 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
8206 | return FALSE; | |
8207 | } | |
8208 | if (htab->splt->size > 0) | |
8209 | { | |
8210 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
8211 | return FALSE; | |
8212 | ||
8213 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
8214 | return FALSE; | |
8215 | ||
8216 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
8217 | return FALSE; | |
8218 | } | |
b49e97c9 | 8219 | } |
0a44bf69 RS |
8220 | else |
8221 | { | |
8222 | if (mips_elf_rel_dyn_section (info, FALSE)) | |
8223 | { | |
8224 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
8225 | return FALSE; | |
b49e97c9 | 8226 | |
0a44bf69 RS |
8227 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
8228 | return FALSE; | |
b49e97c9 | 8229 | |
0a44bf69 RS |
8230 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
8231 | return FALSE; | |
8232 | } | |
b49e97c9 | 8233 | |
0a44bf69 RS |
8234 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
8235 | return FALSE; | |
b49e97c9 | 8236 | |
0a44bf69 RS |
8237 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
8238 | return FALSE; | |
b49e97c9 | 8239 | |
0a44bf69 RS |
8240 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
8241 | return FALSE; | |
b49e97c9 | 8242 | |
0a44bf69 RS |
8243 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
8244 | return FALSE; | |
b49e97c9 | 8245 | |
0a44bf69 RS |
8246 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
8247 | return FALSE; | |
b49e97c9 | 8248 | |
0a44bf69 RS |
8249 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
8250 | return FALSE; | |
b49e97c9 | 8251 | |
0a44bf69 RS |
8252 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
8253 | return FALSE; | |
8254 | ||
8255 | if (IRIX_COMPAT (dynobj) == ict_irix5 | |
8256 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
8257 | return FALSE; | |
8258 | ||
8259 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
8260 | && (bfd_get_section_by_name | |
8261 | (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) | |
8262 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) | |
8263 | return FALSE; | |
8264 | } | |
7a2b07ff NS |
8265 | if (htab->is_vxworks |
8266 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
8267 | return FALSE; | |
b49e97c9 TS |
8268 | } |
8269 | ||
b34976b6 | 8270 | return TRUE; |
b49e97c9 TS |
8271 | } |
8272 | \f | |
81d43bff RS |
8273 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
8274 | Adjust its R_ADDEND field so that it is correct for the output file. | |
8275 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
8276 | and sections respectively; both use symbol indexes. */ | |
8277 | ||
8278 | static void | |
8279 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
8280 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
8281 | asection **local_sections, Elf_Internal_Rela *rel) | |
8282 | { | |
8283 | unsigned int r_type, r_symndx; | |
8284 | Elf_Internal_Sym *sym; | |
8285 | asection *sec; | |
8286 | ||
8287 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) | |
8288 | { | |
8289 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
8290 | if (r_type == R_MIPS16_GPREL | |
8291 | || r_type == R_MIPS_GPREL16 | |
8292 | || r_type == R_MIPS_GPREL32 | |
8293 | || r_type == R_MIPS_LITERAL) | |
8294 | { | |
8295 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
8296 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
8297 | } | |
8298 | ||
8299 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
8300 | sym = local_syms + r_symndx; | |
8301 | ||
8302 | /* Adjust REL's addend to account for section merging. */ | |
8303 | if (!info->relocatable) | |
8304 | { | |
8305 | sec = local_sections[r_symndx]; | |
8306 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
8307 | } | |
8308 | ||
8309 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
8310 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8311 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
8312 | } | |
8313 | } | |
8314 | ||
b49e97c9 TS |
8315 | /* Relocate a MIPS ELF section. */ |
8316 | ||
b34976b6 | 8317 | bfd_boolean |
9719ad41 RS |
8318 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
8319 | bfd *input_bfd, asection *input_section, | |
8320 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
8321 | Elf_Internal_Sym *local_syms, | |
8322 | asection **local_sections) | |
b49e97c9 TS |
8323 | { |
8324 | Elf_Internal_Rela *rel; | |
8325 | const Elf_Internal_Rela *relend; | |
8326 | bfd_vma addend = 0; | |
b34976b6 | 8327 | bfd_boolean use_saved_addend_p = FALSE; |
9c5bfbb7 | 8328 | const struct elf_backend_data *bed; |
b49e97c9 TS |
8329 | |
8330 | bed = get_elf_backend_data (output_bfd); | |
8331 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; | |
8332 | for (rel = relocs; rel < relend; ++rel) | |
8333 | { | |
8334 | const char *name; | |
c9adbffe | 8335 | bfd_vma value = 0; |
b49e97c9 | 8336 | reloc_howto_type *howto; |
b34976b6 AM |
8337 | bfd_boolean require_jalx; |
8338 | /* TRUE if the relocation is a RELA relocation, rather than a | |
b49e97c9 | 8339 | REL relocation. */ |
b34976b6 | 8340 | bfd_boolean rela_relocation_p = TRUE; |
b49e97c9 | 8341 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 8342 | const char *msg; |
ab96bf03 AM |
8343 | unsigned long r_symndx; |
8344 | asection *sec; | |
749b8d9d L |
8345 | Elf_Internal_Shdr *symtab_hdr; |
8346 | struct elf_link_hash_entry *h; | |
b49e97c9 TS |
8347 | |
8348 | /* Find the relocation howto for this relocation. */ | |
ab96bf03 AM |
8349 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, |
8350 | NEWABI_P (input_bfd) | |
8351 | && (MIPS_RELOC_RELA_P | |
8352 | (input_bfd, input_section, | |
8353 | rel - relocs))); | |
8354 | ||
8355 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 8356 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
ab96bf03 | 8357 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE)) |
749b8d9d L |
8358 | { |
8359 | sec = local_sections[r_symndx]; | |
8360 | h = NULL; | |
8361 | } | |
ab96bf03 AM |
8362 | else |
8363 | { | |
ab96bf03 | 8364 | unsigned long extsymoff; |
ab96bf03 | 8365 | |
ab96bf03 AM |
8366 | extsymoff = 0; |
8367 | if (!elf_bad_symtab (input_bfd)) | |
8368 | extsymoff = symtab_hdr->sh_info; | |
8369 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
8370 | while (h->root.type == bfd_link_hash_indirect | |
8371 | || h->root.type == bfd_link_hash_warning) | |
8372 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8373 | ||
8374 | sec = NULL; | |
8375 | if (h->root.type == bfd_link_hash_defined | |
8376 | || h->root.type == bfd_link_hash_defweak) | |
8377 | sec = h->root.u.def.section; | |
8378 | } | |
8379 | ||
8380 | if (sec != NULL && elf_discarded_section (sec)) | |
8381 | { | |
8382 | /* For relocs against symbols from removed linkonce sections, | |
8383 | or sections discarded by a linker script, we just want the | |
8384 | section contents zeroed. Avoid any special processing. */ | |
8385 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
8386 | rel->r_info = 0; | |
8387 | rel->r_addend = 0; | |
8388 | continue; | |
8389 | } | |
8390 | ||
4a14403c | 8391 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
8392 | { |
8393 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
8394 | 64-bit code, but make sure all their addresses are in the | |
8395 | lowermost or uppermost 32-bit section of the 64-bit address | |
8396 | space. Thus, when they use an R_MIPS_64 they mean what is | |
8397 | usually meant by R_MIPS_32, with the exception that the | |
8398 | stored value is sign-extended to 64 bits. */ | |
b34976b6 | 8399 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE); |
b49e97c9 TS |
8400 | |
8401 | /* On big-endian systems, we need to lie about the position | |
8402 | of the reloc. */ | |
8403 | if (bfd_big_endian (input_bfd)) | |
8404 | rel->r_offset += 4; | |
8405 | } | |
b49e97c9 TS |
8406 | |
8407 | if (!use_saved_addend_p) | |
8408 | { | |
b49e97c9 TS |
8409 | /* If these relocations were originally of the REL variety, |
8410 | we must pull the addend out of the field that will be | |
8411 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
8412 | RELA relocation. */ |
8413 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
8414 | relocs, rel)) | |
b49e97c9 | 8415 | { |
b34976b6 | 8416 | rela_relocation_p = FALSE; |
c224138d RS |
8417 | addend = mips_elf_read_rel_addend (input_bfd, rel, |
8418 | howto, contents); | |
738e5348 RS |
8419 | if (hi16_reloc_p (r_type) |
8420 | || (got16_reloc_p (r_type) | |
b49e97c9 | 8421 | && mips_elf_local_relocation_p (input_bfd, rel, |
b34976b6 | 8422 | local_sections, FALSE))) |
b49e97c9 | 8423 | { |
c224138d RS |
8424 | if (!mips_elf_add_lo16_rel_addend (input_bfd, rel, relend, |
8425 | contents, &addend)) | |
749b8d9d L |
8426 | { |
8427 | const char *name; | |
8428 | ||
8429 | if (h) | |
8430 | name = h->root.root.string; | |
8431 | else | |
8432 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
8433 | local_syms + r_symndx, | |
8434 | sec); | |
8435 | (*_bfd_error_handler) | |
8436 | (_("%B: Can't find matching LO16 reloc against `%s' for %s at 0x%lx in section `%A'"), | |
8437 | input_bfd, input_section, name, howto->name, | |
8438 | rel->r_offset); | |
749b8d9d | 8439 | } |
b49e97c9 | 8440 | } |
30ac9238 RS |
8441 | else |
8442 | addend <<= howto->rightshift; | |
b49e97c9 TS |
8443 | } |
8444 | else | |
8445 | addend = rel->r_addend; | |
81d43bff RS |
8446 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
8447 | local_syms, local_sections, rel); | |
b49e97c9 TS |
8448 | } |
8449 | ||
1049f94e | 8450 | if (info->relocatable) |
b49e97c9 | 8451 | { |
4a14403c | 8452 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
8453 | && bfd_big_endian (input_bfd)) |
8454 | rel->r_offset -= 4; | |
8455 | ||
81d43bff | 8456 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 8457 | { |
81d43bff | 8458 | addend += rel->r_addend; |
738e5348 | 8459 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
8460 | addend = mips_elf_high (addend); |
8461 | else if (r_type == R_MIPS_HIGHER) | |
8462 | addend = mips_elf_higher (addend); | |
8463 | else if (r_type == R_MIPS_HIGHEST) | |
8464 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
8465 | else |
8466 | addend >>= howto->rightshift; | |
b49e97c9 | 8467 | |
30ac9238 RS |
8468 | /* We use the source mask, rather than the destination |
8469 | mask because the place to which we are writing will be | |
8470 | source of the addend in the final link. */ | |
b49e97c9 TS |
8471 | addend &= howto->src_mask; |
8472 | ||
5a659663 | 8473 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
8474 | /* See the comment above about using R_MIPS_64 in the 32-bit |
8475 | ABI. Here, we need to update the addend. It would be | |
8476 | possible to get away with just using the R_MIPS_32 reloc | |
8477 | but for endianness. */ | |
8478 | { | |
8479 | bfd_vma sign_bits; | |
8480 | bfd_vma low_bits; | |
8481 | bfd_vma high_bits; | |
8482 | ||
8483 | if (addend & ((bfd_vma) 1 << 31)) | |
8484 | #ifdef BFD64 | |
8485 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
8486 | #else | |
8487 | sign_bits = -1; | |
8488 | #endif | |
8489 | else | |
8490 | sign_bits = 0; | |
8491 | ||
8492 | /* If we don't know that we have a 64-bit type, | |
8493 | do two separate stores. */ | |
8494 | if (bfd_big_endian (input_bfd)) | |
8495 | { | |
8496 | /* Store the sign-bits (which are most significant) | |
8497 | first. */ | |
8498 | low_bits = sign_bits; | |
8499 | high_bits = addend; | |
8500 | } | |
8501 | else | |
8502 | { | |
8503 | low_bits = addend; | |
8504 | high_bits = sign_bits; | |
8505 | } | |
8506 | bfd_put_32 (input_bfd, low_bits, | |
8507 | contents + rel->r_offset); | |
8508 | bfd_put_32 (input_bfd, high_bits, | |
8509 | contents + rel->r_offset + 4); | |
8510 | continue; | |
8511 | } | |
8512 | ||
8513 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
8514 | input_bfd, input_section, | |
b34976b6 AM |
8515 | contents, FALSE)) |
8516 | return FALSE; | |
b49e97c9 TS |
8517 | } |
8518 | ||
8519 | /* Go on to the next relocation. */ | |
8520 | continue; | |
8521 | } | |
8522 | ||
8523 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
8524 | relocations for the same offset. In that case we are | |
8525 | supposed to treat the output of each relocation as the addend | |
8526 | for the next. */ | |
8527 | if (rel + 1 < relend | |
8528 | && rel->r_offset == rel[1].r_offset | |
8529 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
b34976b6 | 8530 | use_saved_addend_p = TRUE; |
b49e97c9 | 8531 | else |
b34976b6 | 8532 | use_saved_addend_p = FALSE; |
b49e97c9 TS |
8533 | |
8534 | /* Figure out what value we are supposed to relocate. */ | |
8535 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
8536 | input_section, info, rel, | |
8537 | addend, howto, local_syms, | |
8538 | local_sections, &value, | |
bce03d3d AO |
8539 | &name, &require_jalx, |
8540 | use_saved_addend_p)) | |
b49e97c9 TS |
8541 | { |
8542 | case bfd_reloc_continue: | |
8543 | /* There's nothing to do. */ | |
8544 | continue; | |
8545 | ||
8546 | case bfd_reloc_undefined: | |
8547 | /* mips_elf_calculate_relocation already called the | |
8548 | undefined_symbol callback. There's no real point in | |
8549 | trying to perform the relocation at this point, so we | |
8550 | just skip ahead to the next relocation. */ | |
8551 | continue; | |
8552 | ||
8553 | case bfd_reloc_notsupported: | |
8554 | msg = _("internal error: unsupported relocation error"); | |
8555 | info->callbacks->warning | |
8556 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
b34976b6 | 8557 | return FALSE; |
b49e97c9 TS |
8558 | |
8559 | case bfd_reloc_overflow: | |
8560 | if (use_saved_addend_p) | |
8561 | /* Ignore overflow until we reach the last relocation for | |
8562 | a given location. */ | |
8563 | ; | |
8564 | else | |
8565 | { | |
0e53d9da AN |
8566 | struct mips_elf_link_hash_table *htab; |
8567 | ||
8568 | htab = mips_elf_hash_table (info); | |
b49e97c9 | 8569 | BFD_ASSERT (name != NULL); |
0e53d9da AN |
8570 | if (!htab->small_data_overflow_reported |
8571 | && (howto->type == R_MIPS_GPREL16 | |
8572 | || howto->type == R_MIPS_LITERAL)) | |
8573 | { | |
8574 | const char *msg = | |
8575 | _("small-data section exceeds 64KB;" | |
8576 | " lower small-data size limit (see option -G)"); | |
8577 | ||
8578 | htab->small_data_overflow_reported = TRUE; | |
8579 | (*info->callbacks->einfo) ("%P: %s\n", msg); | |
8580 | } | |
b49e97c9 | 8581 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f | 8582 | (info, NULL, name, howto->name, (bfd_vma) 0, |
b49e97c9 | 8583 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 8584 | return FALSE; |
b49e97c9 TS |
8585 | } |
8586 | break; | |
8587 | ||
8588 | case bfd_reloc_ok: | |
8589 | break; | |
8590 | ||
8591 | default: | |
8592 | abort (); | |
8593 | break; | |
8594 | } | |
8595 | ||
8596 | /* If we've got another relocation for the address, keep going | |
8597 | until we reach the last one. */ | |
8598 | if (use_saved_addend_p) | |
8599 | { | |
8600 | addend = value; | |
8601 | continue; | |
8602 | } | |
8603 | ||
4a14403c | 8604 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
8605 | /* See the comment above about using R_MIPS_64 in the 32-bit |
8606 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
8607 | that calculated the right value. Now, however, we | |
8608 | sign-extend the 32-bit result to 64-bits, and store it as a | |
8609 | 64-bit value. We are especially generous here in that we | |
8610 | go to extreme lengths to support this usage on systems with | |
8611 | only a 32-bit VMA. */ | |
8612 | { | |
8613 | bfd_vma sign_bits; | |
8614 | bfd_vma low_bits; | |
8615 | bfd_vma high_bits; | |
8616 | ||
8617 | if (value & ((bfd_vma) 1 << 31)) | |
8618 | #ifdef BFD64 | |
8619 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
8620 | #else | |
8621 | sign_bits = -1; | |
8622 | #endif | |
8623 | else | |
8624 | sign_bits = 0; | |
8625 | ||
8626 | /* If we don't know that we have a 64-bit type, | |
8627 | do two separate stores. */ | |
8628 | if (bfd_big_endian (input_bfd)) | |
8629 | { | |
8630 | /* Undo what we did above. */ | |
8631 | rel->r_offset -= 4; | |
8632 | /* Store the sign-bits (which are most significant) | |
8633 | first. */ | |
8634 | low_bits = sign_bits; | |
8635 | high_bits = value; | |
8636 | } | |
8637 | else | |
8638 | { | |
8639 | low_bits = value; | |
8640 | high_bits = sign_bits; | |
8641 | } | |
8642 | bfd_put_32 (input_bfd, low_bits, | |
8643 | contents + rel->r_offset); | |
8644 | bfd_put_32 (input_bfd, high_bits, | |
8645 | contents + rel->r_offset + 4); | |
8646 | continue; | |
8647 | } | |
8648 | ||
8649 | /* Actually perform the relocation. */ | |
8650 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
8651 | input_bfd, input_section, | |
8652 | contents, require_jalx)) | |
b34976b6 | 8653 | return FALSE; |
b49e97c9 TS |
8654 | } |
8655 | ||
b34976b6 | 8656 | return TRUE; |
b49e97c9 TS |
8657 | } |
8658 | \f | |
8659 | /* If NAME is one of the special IRIX6 symbols defined by the linker, | |
8660 | adjust it appropriately now. */ | |
8661 | ||
8662 | static void | |
9719ad41 RS |
8663 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
8664 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
8665 | { |
8666 | /* The linker script takes care of providing names and values for | |
8667 | these, but we must place them into the right sections. */ | |
8668 | static const char* const text_section_symbols[] = { | |
8669 | "_ftext", | |
8670 | "_etext", | |
8671 | "__dso_displacement", | |
8672 | "__elf_header", | |
8673 | "__program_header_table", | |
8674 | NULL | |
8675 | }; | |
8676 | ||
8677 | static const char* const data_section_symbols[] = { | |
8678 | "_fdata", | |
8679 | "_edata", | |
8680 | "_end", | |
8681 | "_fbss", | |
8682 | NULL | |
8683 | }; | |
8684 | ||
8685 | const char* const *p; | |
8686 | int i; | |
8687 | ||
8688 | for (i = 0; i < 2; ++i) | |
8689 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
8690 | *p; | |
8691 | ++p) | |
8692 | if (strcmp (*p, name) == 0) | |
8693 | { | |
8694 | /* All of these symbols are given type STT_SECTION by the | |
8695 | IRIX6 linker. */ | |
8696 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 8697 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
8698 | |
8699 | /* The IRIX linker puts these symbols in special sections. */ | |
8700 | if (i == 0) | |
8701 | sym->st_shndx = SHN_MIPS_TEXT; | |
8702 | else | |
8703 | sym->st_shndx = SHN_MIPS_DATA; | |
8704 | ||
8705 | break; | |
8706 | } | |
8707 | } | |
8708 | ||
8709 | /* Finish up dynamic symbol handling. We set the contents of various | |
8710 | dynamic sections here. */ | |
8711 | ||
b34976b6 | 8712 | bfd_boolean |
9719ad41 RS |
8713 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
8714 | struct bfd_link_info *info, | |
8715 | struct elf_link_hash_entry *h, | |
8716 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
8717 | { |
8718 | bfd *dynobj; | |
b49e97c9 | 8719 | asection *sgot; |
f4416af6 | 8720 | struct mips_got_info *g, *gg; |
b49e97c9 | 8721 | const char *name; |
3d6746ca | 8722 | int idx; |
5108fc1b | 8723 | struct mips_elf_link_hash_table *htab; |
738e5348 | 8724 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 8725 | |
5108fc1b | 8726 | htab = mips_elf_hash_table (info); |
b49e97c9 | 8727 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 8728 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 8729 | |
c5ae1840 | 8730 | if (h->plt.offset != MINUS_ONE) |
b49e97c9 | 8731 | { |
5108fc1b | 8732 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
b49e97c9 TS |
8733 | |
8734 | /* This symbol has a stub. Set it up. */ | |
8735 | ||
8736 | BFD_ASSERT (h->dynindx != -1); | |
8737 | ||
5108fc1b RS |
8738 | BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
8739 | || (h->dynindx <= 0xffff)); | |
3d6746ca DD |
8740 | |
8741 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
8742 | sign extension at runtime in the stub, resulting in a negative |
8743 | index value. */ | |
8744 | if (h->dynindx & ~0x7fffffff) | |
b34976b6 | 8745 | return FALSE; |
b49e97c9 TS |
8746 | |
8747 | /* Fill the stub. */ | |
3d6746ca DD |
8748 | idx = 0; |
8749 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
8750 | idx += 4; | |
8751 | bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx); | |
8752 | idx += 4; | |
5108fc1b | 8753 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
3d6746ca | 8754 | { |
5108fc1b | 8755 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), |
3d6746ca DD |
8756 | stub + idx); |
8757 | idx += 4; | |
8758 | } | |
8759 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
8760 | idx += 4; | |
b49e97c9 | 8761 | |
3d6746ca DD |
8762 | /* If a large stub is not required and sign extension is not a |
8763 | problem, then use legacy code in the stub. */ | |
5108fc1b RS |
8764 | if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE) |
8765 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx); | |
8766 | else if (h->dynindx & ~0x7fff) | |
3d6746ca DD |
8767 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx); |
8768 | else | |
5108fc1b RS |
8769 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), |
8770 | stub + idx); | |
8771 | ||
4e41d0d7 RS |
8772 | BFD_ASSERT (h->plt.offset <= htab->sstubs->size); |
8773 | memcpy (htab->sstubs->contents + h->plt.offset, | |
8774 | stub, htab->function_stub_size); | |
b49e97c9 TS |
8775 | |
8776 | /* Mark the symbol as undefined. plt.offset != -1 occurs | |
8777 | only for the referenced symbol. */ | |
8778 | sym->st_shndx = SHN_UNDEF; | |
8779 | ||
8780 | /* The run-time linker uses the st_value field of the symbol | |
8781 | to reset the global offset table entry for this external | |
8782 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
8783 | sym->st_value = (htab->sstubs->output_section->vma |
8784 | + htab->sstubs->output_offset | |
c5ae1840 | 8785 | + h->plt.offset); |
b49e97c9 TS |
8786 | } |
8787 | ||
738e5348 RS |
8788 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
8789 | refer to the stub, since only the stub uses the standard calling | |
8790 | conventions. */ | |
8791 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
8792 | { | |
8793 | BFD_ASSERT (hmips->need_fn_stub); | |
8794 | sym->st_value = (hmips->fn_stub->output_section->vma | |
8795 | + hmips->fn_stub->output_offset); | |
8796 | sym->st_size = hmips->fn_stub->size; | |
8797 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
8798 | } | |
8799 | ||
b49e97c9 | 8800 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 8801 | || h->forced_local); |
b49e97c9 | 8802 | |
f4416af6 | 8803 | sgot = mips_elf_got_section (dynobj, FALSE); |
b49e97c9 | 8804 | BFD_ASSERT (sgot != NULL); |
f4416af6 | 8805 | BFD_ASSERT (mips_elf_section_data (sgot) != NULL); |
f0abc2a1 | 8806 | g = mips_elf_section_data (sgot)->u.got_info; |
b49e97c9 TS |
8807 | BFD_ASSERT (g != NULL); |
8808 | ||
8809 | /* Run through the global symbol table, creating GOT entries for all | |
8810 | the symbols that need them. */ | |
8811 | if (g->global_gotsym != NULL | |
8812 | && h->dynindx >= g->global_gotsym->dynindx) | |
8813 | { | |
8814 | bfd_vma offset; | |
8815 | bfd_vma value; | |
8816 | ||
6eaa6adc | 8817 | value = sym->st_value; |
738e5348 RS |
8818 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, |
8819 | R_MIPS_GOT16, info); | |
b49e97c9 TS |
8820 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
8821 | } | |
8822 | ||
0f20cc35 | 8823 | if (g->next && h->dynindx != -1 && h->type != STT_TLS) |
f4416af6 AO |
8824 | { |
8825 | struct mips_got_entry e, *p; | |
0626d451 | 8826 | bfd_vma entry; |
f4416af6 | 8827 | bfd_vma offset; |
f4416af6 AO |
8828 | |
8829 | gg = g; | |
8830 | ||
8831 | e.abfd = output_bfd; | |
8832 | e.symndx = -1; | |
738e5348 | 8833 | e.d.h = hmips; |
0f20cc35 | 8834 | e.tls_type = 0; |
143d77c5 | 8835 | |
f4416af6 AO |
8836 | for (g = g->next; g->next != gg; g = g->next) |
8837 | { | |
8838 | if (g->got_entries | |
8839 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
8840 | &e))) | |
8841 | { | |
8842 | offset = p->gotidx; | |
0626d451 RS |
8843 | if (info->shared |
8844 | || (elf_hash_table (info)->dynamic_sections_created | |
8845 | && p->d.h != NULL | |
f5385ebf AM |
8846 | && p->d.h->root.def_dynamic |
8847 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
8848 | { |
8849 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
8850 | the various compatibility problems, it's easier to mock | |
8851 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
8852 | mips_elf_create_dynamic_relocation to calculate the | |
8853 | appropriate addend. */ | |
8854 | Elf_Internal_Rela rel[3]; | |
8855 | ||
8856 | memset (rel, 0, sizeof (rel)); | |
8857 | if (ABI_64_P (output_bfd)) | |
8858 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
8859 | else | |
8860 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
8861 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
8862 | ||
8863 | entry = 0; | |
8864 | if (! (mips_elf_create_dynamic_relocation | |
8865 | (output_bfd, info, rel, | |
8866 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
8867 | return FALSE; | |
8868 | } | |
8869 | else | |
8870 | entry = sym->st_value; | |
8871 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
8872 | } |
8873 | } | |
8874 | } | |
8875 | ||
b49e97c9 TS |
8876 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
8877 | name = h->root.root.string; | |
8878 | if (strcmp (name, "_DYNAMIC") == 0 | |
22edb2f1 | 8879 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
8880 | sym->st_shndx = SHN_ABS; |
8881 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
8882 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
8883 | { | |
8884 | sym->st_shndx = SHN_ABS; | |
8885 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
8886 | sym->st_value = 1; | |
8887 | } | |
4a14403c | 8888 | else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
8889 | { |
8890 | sym->st_shndx = SHN_ABS; | |
8891 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
8892 | sym->st_value = elf_gp (output_bfd); | |
8893 | } | |
8894 | else if (SGI_COMPAT (output_bfd)) | |
8895 | { | |
8896 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
8897 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
8898 | { | |
8899 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
8900 | sym->st_other = STO_PROTECTED; | |
8901 | sym->st_value = 0; | |
8902 | sym->st_shndx = SHN_MIPS_DATA; | |
8903 | } | |
8904 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
8905 | { | |
8906 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
8907 | sym->st_other = STO_PROTECTED; | |
8908 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
8909 | sym->st_shndx = SHN_ABS; | |
8910 | } | |
8911 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
8912 | { | |
8913 | if (h->type == STT_FUNC) | |
8914 | sym->st_shndx = SHN_MIPS_TEXT; | |
8915 | else if (h->type == STT_OBJECT) | |
8916 | sym->st_shndx = SHN_MIPS_DATA; | |
8917 | } | |
8918 | } | |
8919 | ||
8920 | /* Handle the IRIX6-specific symbols. */ | |
8921 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
8922 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
8923 | ||
8924 | if (! info->shared) | |
8925 | { | |
8926 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
8927 | && (strcmp (name, "__rld_map") == 0 | |
8928 | || strcmp (name, "__RLD_MAP") == 0)) | |
8929 | { | |
8930 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
8931 | BFD_ASSERT (s != NULL); | |
8932 | sym->st_value = s->output_section->vma + s->output_offset; | |
9719ad41 | 8933 | bfd_put_32 (output_bfd, 0, s->contents); |
b49e97c9 TS |
8934 | if (mips_elf_hash_table (info)->rld_value == 0) |
8935 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
8936 | } | |
8937 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
8938 | && strcmp (name, "__rld_obj_head") == 0) | |
8939 | { | |
8940 | /* IRIX6 does not use a .rld_map section. */ | |
8941 | if (IRIX_COMPAT (output_bfd) == ict_irix5 | |
8942 | || IRIX_COMPAT (output_bfd) == ict_none) | |
8943 | BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map") | |
8944 | != NULL); | |
8945 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
8946 | } | |
8947 | } | |
8948 | ||
738e5348 RS |
8949 | /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to |
8950 | treat MIPS16 symbols like any other. */ | |
30c09090 | 8951 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
8952 | { |
8953 | BFD_ASSERT (sym->st_value & 1); | |
8954 | sym->st_other -= STO_MIPS16; | |
8955 | } | |
b49e97c9 | 8956 | |
b34976b6 | 8957 | return TRUE; |
b49e97c9 TS |
8958 | } |
8959 | ||
0a44bf69 RS |
8960 | /* Likewise, for VxWorks. */ |
8961 | ||
8962 | bfd_boolean | |
8963 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, | |
8964 | struct bfd_link_info *info, | |
8965 | struct elf_link_hash_entry *h, | |
8966 | Elf_Internal_Sym *sym) | |
8967 | { | |
8968 | bfd *dynobj; | |
8969 | asection *sgot; | |
8970 | struct mips_got_info *g; | |
8971 | struct mips_elf_link_hash_table *htab; | |
8972 | ||
8973 | htab = mips_elf_hash_table (info); | |
8974 | dynobj = elf_hash_table (info)->dynobj; | |
8975 | ||
8976 | if (h->plt.offset != (bfd_vma) -1) | |
8977 | { | |
6d79d2ed | 8978 | bfd_byte *loc; |
0a44bf69 RS |
8979 | bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset; |
8980 | Elf_Internal_Rela rel; | |
8981 | static const bfd_vma *plt_entry; | |
8982 | ||
8983 | BFD_ASSERT (h->dynindx != -1); | |
8984 | BFD_ASSERT (htab->splt != NULL); | |
8985 | BFD_ASSERT (h->plt.offset <= htab->splt->size); | |
8986 | ||
8987 | /* Calculate the address of the .plt entry. */ | |
8988 | plt_address = (htab->splt->output_section->vma | |
8989 | + htab->splt->output_offset | |
8990 | + h->plt.offset); | |
8991 | ||
8992 | /* Calculate the index of the entry. */ | |
8993 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
8994 | / htab->plt_entry_size); | |
8995 | ||
8996 | /* Calculate the address of the .got.plt entry. */ | |
8997 | got_address = (htab->sgotplt->output_section->vma | |
8998 | + htab->sgotplt->output_offset | |
8999 | + plt_index * 4); | |
9000 | ||
9001 | /* Calculate the offset of the .got.plt entry from | |
9002 | _GLOBAL_OFFSET_TABLE_. */ | |
9003 | got_offset = mips_elf_gotplt_index (info, h); | |
9004 | ||
9005 | /* Calculate the offset for the branch at the start of the PLT | |
9006 | entry. The branch jumps to the beginning of .plt. */ | |
9007 | branch_offset = -(h->plt.offset / 4 + 1) & 0xffff; | |
9008 | ||
9009 | /* Fill in the initial value of the .got.plt entry. */ | |
9010 | bfd_put_32 (output_bfd, plt_address, | |
9011 | htab->sgotplt->contents + plt_index * 4); | |
9012 | ||
9013 | /* Find out where the .plt entry should go. */ | |
9014 | loc = htab->splt->contents + h->plt.offset; | |
9015 | ||
9016 | if (info->shared) | |
9017 | { | |
9018 | plt_entry = mips_vxworks_shared_plt_entry; | |
9019 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9020 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9021 | } | |
9022 | else | |
9023 | { | |
9024 | bfd_vma got_address_high, got_address_low; | |
9025 | ||
9026 | plt_entry = mips_vxworks_exec_plt_entry; | |
9027 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
9028 | got_address_low = got_address & 0xffff; | |
9029 | ||
9030 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
9031 | bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4); | |
9032 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); | |
9033 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
9034 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9035 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9036 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
9037 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
9038 | ||
9039 | loc = (htab->srelplt2->contents | |
9040 | + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela)); | |
9041 | ||
9042 | /* Emit a relocation for the .got.plt entry. */ | |
9043 | rel.r_offset = got_address; | |
9044 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
9045 | rel.r_addend = h->plt.offset; | |
9046 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9047 | ||
9048 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
9049 | loc += sizeof (Elf32_External_Rela); | |
9050 | rel.r_offset = plt_address + 8; | |
9051 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9052 | rel.r_addend = got_offset; | |
9053 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9054 | ||
9055 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
9056 | loc += sizeof (Elf32_External_Rela); | |
9057 | rel.r_offset += 4; | |
9058 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9059 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9060 | } | |
9061 | ||
9062 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
9063 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
9064 | rel.r_offset = got_address; | |
9065 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
9066 | rel.r_addend = 0; | |
9067 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9068 | ||
9069 | if (!h->def_regular) | |
9070 | sym->st_shndx = SHN_UNDEF; | |
9071 | } | |
9072 | ||
9073 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
9074 | ||
9075 | sgot = mips_elf_got_section (dynobj, FALSE); | |
9076 | BFD_ASSERT (sgot != NULL); | |
9077 | BFD_ASSERT (mips_elf_section_data (sgot) != NULL); | |
9078 | g = mips_elf_section_data (sgot)->u.got_info; | |
9079 | BFD_ASSERT (g != NULL); | |
9080 | ||
9081 | /* See if this symbol has an entry in the GOT. */ | |
9082 | if (g->global_gotsym != NULL | |
9083 | && h->dynindx >= g->global_gotsym->dynindx) | |
9084 | { | |
9085 | bfd_vma offset; | |
9086 | Elf_Internal_Rela outrel; | |
9087 | bfd_byte *loc; | |
9088 | asection *s; | |
9089 | ||
9090 | /* Install the symbol value in the GOT. */ | |
9091 | offset = mips_elf_global_got_index (dynobj, output_bfd, h, | |
9092 | R_MIPS_GOT16, info); | |
9093 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); | |
9094 | ||
9095 | /* Add a dynamic relocation for it. */ | |
9096 | s = mips_elf_rel_dyn_section (info, FALSE); | |
9097 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); | |
9098 | outrel.r_offset = (sgot->output_section->vma | |
9099 | + sgot->output_offset | |
9100 | + offset); | |
9101 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
9102 | outrel.r_addend = 0; | |
9103 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
9104 | } | |
9105 | ||
9106 | /* Emit a copy reloc, if needed. */ | |
9107 | if (h->needs_copy) | |
9108 | { | |
9109 | Elf_Internal_Rela rel; | |
9110 | ||
9111 | BFD_ASSERT (h->dynindx != -1); | |
9112 | ||
9113 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
9114 | + h->root.u.def.section->output_offset | |
9115 | + h->root.u.def.value); | |
9116 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
9117 | rel.r_addend = 0; | |
9118 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
9119 | htab->srelbss->contents | |
9120 | + (htab->srelbss->reloc_count | |
9121 | * sizeof (Elf32_External_Rela))); | |
9122 | ++htab->srelbss->reloc_count; | |
9123 | } | |
9124 | ||
9125 | /* If this is a mips16 symbol, force the value to be even. */ | |
30c09090 | 9126 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
0a44bf69 RS |
9127 | sym->st_value &= ~1; |
9128 | ||
9129 | return TRUE; | |
9130 | } | |
9131 | ||
9132 | /* Install the PLT header for a VxWorks executable and finalize the | |
9133 | contents of .rela.plt.unloaded. */ | |
9134 | ||
9135 | static void | |
9136 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9137 | { | |
9138 | Elf_Internal_Rela rela; | |
9139 | bfd_byte *loc; | |
9140 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
9141 | static const bfd_vma *plt_entry; | |
9142 | struct mips_elf_link_hash_table *htab; | |
9143 | ||
9144 | htab = mips_elf_hash_table (info); | |
9145 | plt_entry = mips_vxworks_exec_plt0_entry; | |
9146 | ||
9147 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
9148 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
9149 | + htab->root.hgot->root.u.def.section->output_offset | |
9150 | + htab->root.hgot->root.u.def.value); | |
9151 | ||
9152 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
9153 | got_value_low = got_value & 0xffff; | |
9154 | ||
9155 | /* Calculate the address of the PLT header. */ | |
9156 | plt_address = htab->splt->output_section->vma + htab->splt->output_offset; | |
9157 | ||
9158 | /* Install the PLT header. */ | |
9159 | loc = htab->splt->contents; | |
9160 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); | |
9161 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
9162 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
9163 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
9164 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
9165 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
9166 | ||
9167 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
9168 | loc = htab->srelplt2->contents; | |
9169 | rela.r_offset = plt_address; | |
9170 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9171 | rela.r_addend = 0; | |
9172 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9173 | loc += sizeof (Elf32_External_Rela); | |
9174 | ||
9175 | /* Output the relocation for the following addiu of | |
9176 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
9177 | rela.r_offset += 4; | |
9178 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9179 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9180 | loc += sizeof (Elf32_External_Rela); | |
9181 | ||
9182 | /* Fix up the remaining relocations. They may have the wrong | |
9183 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
9184 | in which symbols were output. */ | |
9185 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
9186 | { | |
9187 | Elf_Internal_Rela rel; | |
9188 | ||
9189 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9190 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
9191 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9192 | loc += sizeof (Elf32_External_Rela); | |
9193 | ||
9194 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9195 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
9196 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9197 | loc += sizeof (Elf32_External_Rela); | |
9198 | ||
9199 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
9200 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
9201 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
9202 | loc += sizeof (Elf32_External_Rela); | |
9203 | } | |
9204 | } | |
9205 | ||
9206 | /* Install the PLT header for a VxWorks shared library. */ | |
9207 | ||
9208 | static void | |
9209 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
9210 | { | |
9211 | unsigned int i; | |
9212 | struct mips_elf_link_hash_table *htab; | |
9213 | ||
9214 | htab = mips_elf_hash_table (info); | |
9215 | ||
9216 | /* We just need to copy the entry byte-by-byte. */ | |
9217 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
9218 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
9219 | htab->splt->contents + i * 4); | |
9220 | } | |
9221 | ||
b49e97c9 TS |
9222 | /* Finish up the dynamic sections. */ |
9223 | ||
b34976b6 | 9224 | bfd_boolean |
9719ad41 RS |
9225 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
9226 | struct bfd_link_info *info) | |
b49e97c9 TS |
9227 | { |
9228 | bfd *dynobj; | |
9229 | asection *sdyn; | |
9230 | asection *sgot; | |
f4416af6 | 9231 | struct mips_got_info *gg, *g; |
0a44bf69 | 9232 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9233 | |
0a44bf69 | 9234 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
9235 | dynobj = elf_hash_table (info)->dynobj; |
9236 | ||
9237 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
9238 | ||
f4416af6 | 9239 | sgot = mips_elf_got_section (dynobj, FALSE); |
b49e97c9 | 9240 | if (sgot == NULL) |
f4416af6 | 9241 | gg = g = NULL; |
b49e97c9 TS |
9242 | else |
9243 | { | |
f4416af6 AO |
9244 | BFD_ASSERT (mips_elf_section_data (sgot) != NULL); |
9245 | gg = mips_elf_section_data (sgot)->u.got_info; | |
9246 | BFD_ASSERT (gg != NULL); | |
9247 | g = mips_elf_got_for_ibfd (gg, output_bfd); | |
b49e97c9 TS |
9248 | BFD_ASSERT (g != NULL); |
9249 | } | |
9250 | ||
9251 | if (elf_hash_table (info)->dynamic_sections_created) | |
9252 | { | |
9253 | bfd_byte *b; | |
943284cc | 9254 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
9255 | |
9256 | BFD_ASSERT (sdyn != NULL); | |
9257 | BFD_ASSERT (g != NULL); | |
9258 | ||
9259 | for (b = sdyn->contents; | |
eea6121a | 9260 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
9261 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
9262 | { | |
9263 | Elf_Internal_Dyn dyn; | |
9264 | const char *name; | |
9265 | size_t elemsize; | |
9266 | asection *s; | |
b34976b6 | 9267 | bfd_boolean swap_out_p; |
b49e97c9 TS |
9268 | |
9269 | /* Read in the current dynamic entry. */ | |
9270 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
9271 | ||
9272 | /* Assume that we're going to modify it and write it out. */ | |
b34976b6 | 9273 | swap_out_p = TRUE; |
b49e97c9 TS |
9274 | |
9275 | switch (dyn.d_tag) | |
9276 | { | |
9277 | case DT_RELENT: | |
b49e97c9 TS |
9278 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
9279 | break; | |
9280 | ||
0a44bf69 RS |
9281 | case DT_RELAENT: |
9282 | BFD_ASSERT (htab->is_vxworks); | |
9283 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); | |
9284 | break; | |
9285 | ||
b49e97c9 TS |
9286 | case DT_STRSZ: |
9287 | /* Rewrite DT_STRSZ. */ | |
9288 | dyn.d_un.d_val = | |
9289 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
9290 | break; | |
9291 | ||
9292 | case DT_PLTGOT: | |
9293 | name = ".got"; | |
0a44bf69 RS |
9294 | if (htab->is_vxworks) |
9295 | { | |
9296 | /* _GLOBAL_OFFSET_TABLE_ is defined to be the beginning | |
9297 | of the ".got" section in DYNOBJ. */ | |
9298 | s = bfd_get_section_by_name (dynobj, name); | |
9299 | BFD_ASSERT (s != NULL); | |
9300 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9301 | } | |
9302 | else | |
9303 | { | |
9304 | s = bfd_get_section_by_name (output_bfd, name); | |
9305 | BFD_ASSERT (s != NULL); | |
9306 | dyn.d_un.d_ptr = s->vma; | |
9307 | } | |
b49e97c9 TS |
9308 | break; |
9309 | ||
9310 | case DT_MIPS_RLD_VERSION: | |
9311 | dyn.d_un.d_val = 1; /* XXX */ | |
9312 | break; | |
9313 | ||
9314 | case DT_MIPS_FLAGS: | |
9315 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
9316 | break; | |
9317 | ||
b49e97c9 | 9318 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
9319 | { |
9320 | time_t t; | |
9321 | time (&t); | |
9322 | dyn.d_un.d_val = t; | |
9323 | } | |
b49e97c9 TS |
9324 | break; |
9325 | ||
9326 | case DT_MIPS_ICHECKSUM: | |
9327 | /* XXX FIXME: */ | |
b34976b6 | 9328 | swap_out_p = FALSE; |
b49e97c9 TS |
9329 | break; |
9330 | ||
9331 | case DT_MIPS_IVERSION: | |
9332 | /* XXX FIXME: */ | |
b34976b6 | 9333 | swap_out_p = FALSE; |
b49e97c9 TS |
9334 | break; |
9335 | ||
9336 | case DT_MIPS_BASE_ADDRESS: | |
9337 | s = output_bfd->sections; | |
9338 | BFD_ASSERT (s != NULL); | |
9339 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
9340 | break; | |
9341 | ||
9342 | case DT_MIPS_LOCAL_GOTNO: | |
9343 | dyn.d_un.d_val = g->local_gotno; | |
9344 | break; | |
9345 | ||
9346 | case DT_MIPS_UNREFEXTNO: | |
9347 | /* The index into the dynamic symbol table which is the | |
9348 | entry of the first external symbol that is not | |
9349 | referenced within the same object. */ | |
9350 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
9351 | break; | |
9352 | ||
9353 | case DT_MIPS_GOTSYM: | |
f4416af6 | 9354 | if (gg->global_gotsym) |
b49e97c9 | 9355 | { |
f4416af6 | 9356 | dyn.d_un.d_val = gg->global_gotsym->dynindx; |
b49e97c9 TS |
9357 | break; |
9358 | } | |
9359 | /* In case if we don't have global got symbols we default | |
9360 | to setting DT_MIPS_GOTSYM to the same value as | |
9361 | DT_MIPS_SYMTABNO, so we just fall through. */ | |
9362 | ||
9363 | case DT_MIPS_SYMTABNO: | |
9364 | name = ".dynsym"; | |
9365 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
9366 | s = bfd_get_section_by_name (output_bfd, name); | |
9367 | BFD_ASSERT (s != NULL); | |
9368 | ||
eea6121a | 9369 | dyn.d_un.d_val = s->size / elemsize; |
b49e97c9 TS |
9370 | break; |
9371 | ||
9372 | case DT_MIPS_HIPAGENO: | |
0a44bf69 | 9373 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO (info); |
b49e97c9 TS |
9374 | break; |
9375 | ||
9376 | case DT_MIPS_RLD_MAP: | |
9377 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
9378 | break; | |
9379 | ||
9380 | case DT_MIPS_OPTIONS: | |
9381 | s = (bfd_get_section_by_name | |
9382 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
9383 | dyn.d_un.d_ptr = s->vma; | |
9384 | break; | |
9385 | ||
0a44bf69 RS |
9386 | case DT_RELASZ: |
9387 | BFD_ASSERT (htab->is_vxworks); | |
9388 | /* The count does not include the JUMP_SLOT relocations. */ | |
9389 | if (htab->srelplt) | |
9390 | dyn.d_un.d_val -= htab->srelplt->size; | |
9391 | break; | |
9392 | ||
9393 | case DT_PLTREL: | |
9394 | BFD_ASSERT (htab->is_vxworks); | |
9395 | dyn.d_un.d_val = DT_RELA; | |
9396 | break; | |
9397 | ||
9398 | case DT_PLTRELSZ: | |
9399 | BFD_ASSERT (htab->is_vxworks); | |
9400 | dyn.d_un.d_val = htab->srelplt->size; | |
9401 | break; | |
9402 | ||
9403 | case DT_JMPREL: | |
9404 | BFD_ASSERT (htab->is_vxworks); | |
9405 | dyn.d_un.d_val = (htab->srelplt->output_section->vma | |
9406 | + htab->srelplt->output_offset); | |
9407 | break; | |
9408 | ||
943284cc DJ |
9409 | case DT_TEXTREL: |
9410 | /* If we didn't need any text relocations after all, delete | |
9411 | the dynamic tag. */ | |
9412 | if (!(info->flags & DF_TEXTREL)) | |
9413 | { | |
9414 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
9415 | swap_out_p = FALSE; | |
9416 | } | |
9417 | break; | |
9418 | ||
9419 | case DT_FLAGS: | |
9420 | /* If we didn't need any text relocations after all, clear | |
9421 | DF_TEXTREL from DT_FLAGS. */ | |
9422 | if (!(info->flags & DF_TEXTREL)) | |
9423 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
9424 | else | |
9425 | swap_out_p = FALSE; | |
9426 | break; | |
9427 | ||
b49e97c9 | 9428 | default: |
b34976b6 | 9429 | swap_out_p = FALSE; |
7a2b07ff NS |
9430 | if (htab->is_vxworks |
9431 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
9432 | swap_out_p = TRUE; | |
b49e97c9 TS |
9433 | break; |
9434 | } | |
9435 | ||
943284cc | 9436 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 9437 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
9438 | (dynobj, &dyn, b - dyn_skipped); |
9439 | ||
9440 | if (dyn_to_skip) | |
9441 | { | |
9442 | dyn_skipped += dyn_to_skip; | |
9443 | dyn_to_skip = 0; | |
9444 | } | |
b49e97c9 | 9445 | } |
943284cc DJ |
9446 | |
9447 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
9448 | if (dyn_skipped > 0) | |
9449 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
9450 | } |
9451 | ||
b55fd4d4 DJ |
9452 | if (sgot != NULL && sgot->size > 0 |
9453 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 9454 | { |
0a44bf69 RS |
9455 | if (htab->is_vxworks) |
9456 | { | |
9457 | /* The first entry of the global offset table points to the | |
9458 | ".dynamic" section. The second is initialized by the | |
9459 | loader and contains the shared library identifier. | |
9460 | The third is also initialized by the loader and points | |
9461 | to the lazy resolution stub. */ | |
9462 | MIPS_ELF_PUT_WORD (output_bfd, | |
9463 | sdyn->output_offset + sdyn->output_section->vma, | |
9464 | sgot->contents); | |
9465 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
9466 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
9467 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
9468 | sgot->contents | |
9469 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
9470 | } | |
9471 | else | |
9472 | { | |
9473 | /* The first entry of the global offset table will be filled at | |
9474 | runtime. The second entry will be used by some runtime loaders. | |
9475 | This isn't the case of IRIX rld. */ | |
9476 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 9477 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
9478 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
9479 | } | |
b49e97c9 | 9480 | |
54938e2a TS |
9481 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
9482 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
9483 | } | |
b49e97c9 | 9484 | |
f4416af6 AO |
9485 | /* Generate dynamic relocations for the non-primary gots. */ |
9486 | if (gg != NULL && gg->next) | |
9487 | { | |
9488 | Elf_Internal_Rela rel[3]; | |
9489 | bfd_vma addend = 0; | |
9490 | ||
9491 | memset (rel, 0, sizeof (rel)); | |
9492 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
9493 | ||
9494 | for (g = gg->next; g->next != gg; g = g->next) | |
9495 | { | |
0f20cc35 DJ |
9496 | bfd_vma index = g->next->local_gotno + g->next->global_gotno |
9497 | + g->next->tls_gotno; | |
f4416af6 | 9498 | |
9719ad41 | 9499 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
f4416af6 | 9500 | + index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
9501 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
9502 | sgot->contents | |
f4416af6 AO |
9503 | + index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
9504 | ||
9505 | if (! info->shared) | |
9506 | continue; | |
9507 | ||
9508 | while (index < g->assigned_gotno) | |
9509 | { | |
9510 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset | |
9511 | = index++ * MIPS_ELF_GOT_SIZE (output_bfd); | |
9512 | if (!(mips_elf_create_dynamic_relocation | |
9513 | (output_bfd, info, rel, NULL, | |
9514 | bfd_abs_section_ptr, | |
9515 | 0, &addend, sgot))) | |
9516 | return FALSE; | |
9517 | BFD_ASSERT (addend == 0); | |
9518 | } | |
9519 | } | |
9520 | } | |
9521 | ||
3133ddbf DJ |
9522 | /* The generation of dynamic relocations for the non-primary gots |
9523 | adds more dynamic relocations. We cannot count them until | |
9524 | here. */ | |
9525 | ||
9526 | if (elf_hash_table (info)->dynamic_sections_created) | |
9527 | { | |
9528 | bfd_byte *b; | |
9529 | bfd_boolean swap_out_p; | |
9530 | ||
9531 | BFD_ASSERT (sdyn != NULL); | |
9532 | ||
9533 | for (b = sdyn->contents; | |
9534 | b < sdyn->contents + sdyn->size; | |
9535 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
9536 | { | |
9537 | Elf_Internal_Dyn dyn; | |
9538 | asection *s; | |
9539 | ||
9540 | /* Read in the current dynamic entry. */ | |
9541 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
9542 | ||
9543 | /* Assume that we're going to modify it and write it out. */ | |
9544 | swap_out_p = TRUE; | |
9545 | ||
9546 | switch (dyn.d_tag) | |
9547 | { | |
9548 | case DT_RELSZ: | |
9549 | /* Reduce DT_RELSZ to account for any relocations we | |
9550 | decided not to make. This is for the n64 irix rld, | |
9551 | which doesn't seem to apply any relocations if there | |
9552 | are trailing null entries. */ | |
0a44bf69 | 9553 | s = mips_elf_rel_dyn_section (info, FALSE); |
3133ddbf DJ |
9554 | dyn.d_un.d_val = (s->reloc_count |
9555 | * (ABI_64_P (output_bfd) | |
9556 | ? sizeof (Elf64_Mips_External_Rel) | |
9557 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
9558 | /* Adjust the section size too. Tools like the prelinker |
9559 | can reasonably expect the values to the same. */ | |
9560 | elf_section_data (s->output_section)->this_hdr.sh_size | |
9561 | = dyn.d_un.d_val; | |
3133ddbf DJ |
9562 | break; |
9563 | ||
9564 | default: | |
9565 | swap_out_p = FALSE; | |
9566 | break; | |
9567 | } | |
9568 | ||
9569 | if (swap_out_p) | |
9570 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
9571 | (dynobj, &dyn, b); | |
9572 | } | |
9573 | } | |
9574 | ||
b49e97c9 | 9575 | { |
b49e97c9 TS |
9576 | asection *s; |
9577 | Elf32_compact_rel cpt; | |
9578 | ||
b49e97c9 TS |
9579 | if (SGI_COMPAT (output_bfd)) |
9580 | { | |
9581 | /* Write .compact_rel section out. */ | |
9582 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
9583 | if (s != NULL) | |
9584 | { | |
9585 | cpt.id1 = 1; | |
9586 | cpt.num = s->reloc_count; | |
9587 | cpt.id2 = 2; | |
9588 | cpt.offset = (s->output_section->filepos | |
9589 | + sizeof (Elf32_External_compact_rel)); | |
9590 | cpt.reserved0 = 0; | |
9591 | cpt.reserved1 = 0; | |
9592 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
9593 | ((Elf32_External_compact_rel *) | |
9594 | s->contents)); | |
9595 | ||
9596 | /* Clean up a dummy stub function entry in .text. */ | |
4e41d0d7 | 9597 | if (htab->sstubs != NULL) |
b49e97c9 TS |
9598 | { |
9599 | file_ptr dummy_offset; | |
9600 | ||
4e41d0d7 RS |
9601 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
9602 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
9603 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 9604 | htab->function_stub_size); |
b49e97c9 TS |
9605 | } |
9606 | } | |
9607 | } | |
9608 | ||
0a44bf69 RS |
9609 | /* The psABI says that the dynamic relocations must be sorted in |
9610 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
9611 | this, and because the code below handles REL rather than RELA | |
9612 | relocations, using it for VxWorks would be outright harmful. */ | |
9613 | if (!htab->is_vxworks) | |
b49e97c9 | 9614 | { |
0a44bf69 RS |
9615 | s = mips_elf_rel_dyn_section (info, FALSE); |
9616 | if (s != NULL | |
9617 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
9618 | { | |
9619 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 9620 | |
0a44bf69 RS |
9621 | if (ABI_64_P (output_bfd)) |
9622 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
9623 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
9624 | sort_dynamic_relocs_64); | |
9625 | else | |
9626 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
9627 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
9628 | sort_dynamic_relocs); | |
9629 | } | |
b49e97c9 | 9630 | } |
b49e97c9 TS |
9631 | } |
9632 | ||
0a44bf69 RS |
9633 | if (htab->is_vxworks && htab->splt->size > 0) |
9634 | { | |
9635 | if (info->shared) | |
9636 | mips_vxworks_finish_shared_plt (output_bfd, info); | |
9637 | else | |
9638 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
9639 | } | |
b34976b6 | 9640 | return TRUE; |
b49e97c9 TS |
9641 | } |
9642 | ||
b49e97c9 | 9643 | |
64543e1a RS |
9644 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
9645 | ||
9646 | static void | |
9719ad41 | 9647 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 9648 | { |
64543e1a | 9649 | flagword val; |
b49e97c9 TS |
9650 | |
9651 | switch (bfd_get_mach (abfd)) | |
9652 | { | |
9653 | default: | |
9654 | case bfd_mach_mips3000: | |
9655 | val = E_MIPS_ARCH_1; | |
9656 | break; | |
9657 | ||
9658 | case bfd_mach_mips3900: | |
9659 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
9660 | break; | |
9661 | ||
9662 | case bfd_mach_mips6000: | |
9663 | val = E_MIPS_ARCH_2; | |
9664 | break; | |
9665 | ||
9666 | case bfd_mach_mips4000: | |
9667 | case bfd_mach_mips4300: | |
9668 | case bfd_mach_mips4400: | |
9669 | case bfd_mach_mips4600: | |
9670 | val = E_MIPS_ARCH_3; | |
9671 | break; | |
9672 | ||
9673 | case bfd_mach_mips4010: | |
9674 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; | |
9675 | break; | |
9676 | ||
9677 | case bfd_mach_mips4100: | |
9678 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
9679 | break; | |
9680 | ||
9681 | case bfd_mach_mips4111: | |
9682 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
9683 | break; | |
9684 | ||
00707a0e RS |
9685 | case bfd_mach_mips4120: |
9686 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
9687 | break; | |
9688 | ||
b49e97c9 TS |
9689 | case bfd_mach_mips4650: |
9690 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
9691 | break; | |
9692 | ||
00707a0e RS |
9693 | case bfd_mach_mips5400: |
9694 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
9695 | break; | |
9696 | ||
9697 | case bfd_mach_mips5500: | |
9698 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
9699 | break; | |
9700 | ||
0d2e43ed ILT |
9701 | case bfd_mach_mips9000: |
9702 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
9703 | break; | |
9704 | ||
b49e97c9 | 9705 | case bfd_mach_mips5000: |
5a7ea749 | 9706 | case bfd_mach_mips7000: |
b49e97c9 TS |
9707 | case bfd_mach_mips8000: |
9708 | case bfd_mach_mips10000: | |
9709 | case bfd_mach_mips12000: | |
9710 | val = E_MIPS_ARCH_4; | |
9711 | break; | |
9712 | ||
9713 | case bfd_mach_mips5: | |
9714 | val = E_MIPS_ARCH_5; | |
9715 | break; | |
9716 | ||
350cc38d MS |
9717 | case bfd_mach_mips_loongson_2e: |
9718 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
9719 | break; | |
9720 | ||
9721 | case bfd_mach_mips_loongson_2f: | |
9722 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
9723 | break; | |
9724 | ||
b49e97c9 TS |
9725 | case bfd_mach_mips_sb1: |
9726 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
9727 | break; | |
9728 | ||
6f179bd0 AN |
9729 | case bfd_mach_mips_octeon: |
9730 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; | |
9731 | break; | |
9732 | ||
b49e97c9 TS |
9733 | case bfd_mach_mipsisa32: |
9734 | val = E_MIPS_ARCH_32; | |
9735 | break; | |
9736 | ||
9737 | case bfd_mach_mipsisa64: | |
9738 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
9739 | break; |
9740 | ||
9741 | case bfd_mach_mipsisa32r2: | |
9742 | val = E_MIPS_ARCH_32R2; | |
9743 | break; | |
5f74bc13 CD |
9744 | |
9745 | case bfd_mach_mipsisa64r2: | |
9746 | val = E_MIPS_ARCH_64R2; | |
9747 | break; | |
b49e97c9 | 9748 | } |
b49e97c9 TS |
9749 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
9750 | elf_elfheader (abfd)->e_flags |= val; | |
9751 | ||
64543e1a RS |
9752 | } |
9753 | ||
9754 | ||
9755 | /* The final processing done just before writing out a MIPS ELF object | |
9756 | file. This gets the MIPS architecture right based on the machine | |
9757 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
9758 | ||
9759 | void | |
9719ad41 RS |
9760 | _bfd_mips_elf_final_write_processing (bfd *abfd, |
9761 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
64543e1a RS |
9762 | { |
9763 | unsigned int i; | |
9764 | Elf_Internal_Shdr **hdrpp; | |
9765 | const char *name; | |
9766 | asection *sec; | |
9767 | ||
9768 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
9769 | is nonzero. This is for compatibility with old objects, which used | |
9770 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
9771 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
9772 | mips_set_isa_flags (abfd); | |
9773 | ||
b49e97c9 TS |
9774 | /* Set the sh_info field for .gptab sections and other appropriate |
9775 | info for each special section. */ | |
9776 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
9777 | i < elf_numsections (abfd); | |
9778 | i++, hdrpp++) | |
9779 | { | |
9780 | switch ((*hdrpp)->sh_type) | |
9781 | { | |
9782 | case SHT_MIPS_MSYM: | |
9783 | case SHT_MIPS_LIBLIST: | |
9784 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
9785 | if (sec != NULL) | |
9786 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
9787 | break; | |
9788 | ||
9789 | case SHT_MIPS_GPTAB: | |
9790 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
9791 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
9792 | BFD_ASSERT (name != NULL | |
0112cd26 | 9793 | && CONST_STRNEQ (name, ".gptab.")); |
b49e97c9 TS |
9794 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
9795 | BFD_ASSERT (sec != NULL); | |
9796 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
9797 | break; | |
9798 | ||
9799 | case SHT_MIPS_CONTENT: | |
9800 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
9801 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
9802 | BFD_ASSERT (name != NULL | |
0112cd26 | 9803 | && CONST_STRNEQ (name, ".MIPS.content")); |
b49e97c9 TS |
9804 | sec = bfd_get_section_by_name (abfd, |
9805 | name + sizeof ".MIPS.content" - 1); | |
9806 | BFD_ASSERT (sec != NULL); | |
9807 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
9808 | break; | |
9809 | ||
9810 | case SHT_MIPS_SYMBOL_LIB: | |
9811 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
9812 | if (sec != NULL) | |
9813 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
9814 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
9815 | if (sec != NULL) | |
9816 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
9817 | break; | |
9818 | ||
9819 | case SHT_MIPS_EVENTS: | |
9820 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
9821 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
9822 | BFD_ASSERT (name != NULL); | |
0112cd26 | 9823 | if (CONST_STRNEQ (name, ".MIPS.events")) |
b49e97c9 TS |
9824 | sec = bfd_get_section_by_name (abfd, |
9825 | name + sizeof ".MIPS.events" - 1); | |
9826 | else | |
9827 | { | |
0112cd26 | 9828 | BFD_ASSERT (CONST_STRNEQ (name, ".MIPS.post_rel")); |
b49e97c9 TS |
9829 | sec = bfd_get_section_by_name (abfd, |
9830 | (name | |
9831 | + sizeof ".MIPS.post_rel" - 1)); | |
9832 | } | |
9833 | BFD_ASSERT (sec != NULL); | |
9834 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
9835 | break; | |
9836 | ||
9837 | } | |
9838 | } | |
9839 | } | |
9840 | \f | |
8dc1a139 | 9841 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
9842 | segments. */ |
9843 | ||
9844 | int | |
a6b96beb AM |
9845 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
9846 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
9847 | { |
9848 | asection *s; | |
9849 | int ret = 0; | |
9850 | ||
9851 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
9852 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
9853 | if (s && (s->flags & SEC_LOAD)) | |
9854 | ++ret; | |
9855 | ||
9856 | /* See if we need a PT_MIPS_OPTIONS segment. */ | |
9857 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
9858 | && bfd_get_section_by_name (abfd, | |
9859 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
9860 | ++ret; | |
9861 | ||
9862 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
9863 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
9864 | && bfd_get_section_by_name (abfd, ".dynamic") | |
9865 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
9866 | ++ret; | |
9867 | ||
98c904a8 RS |
9868 | /* Allocate a PT_NULL header in dynamic objects. See |
9869 | _bfd_mips_elf_modify_segment_map for details. */ | |
9870 | if (!SGI_COMPAT (abfd) | |
9871 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
9872 | ++ret; | |
9873 | ||
b49e97c9 TS |
9874 | return ret; |
9875 | } | |
9876 | ||
8dc1a139 | 9877 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 9878 | |
b34976b6 | 9879 | bfd_boolean |
9719ad41 | 9880 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 9881 | struct bfd_link_info *info) |
b49e97c9 TS |
9882 | { |
9883 | asection *s; | |
9884 | struct elf_segment_map *m, **pm; | |
9885 | bfd_size_type amt; | |
9886 | ||
9887 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
9888 | segment. */ | |
9889 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
9890 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
9891 | { | |
9892 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
9893 | if (m->p_type == PT_MIPS_REGINFO) | |
9894 | break; | |
9895 | if (m == NULL) | |
9896 | { | |
9897 | amt = sizeof *m; | |
9719ad41 | 9898 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 9899 | if (m == NULL) |
b34976b6 | 9900 | return FALSE; |
b49e97c9 TS |
9901 | |
9902 | m->p_type = PT_MIPS_REGINFO; | |
9903 | m->count = 1; | |
9904 | m->sections[0] = s; | |
9905 | ||
9906 | /* We want to put it after the PHDR and INTERP segments. */ | |
9907 | pm = &elf_tdata (abfd)->segment_map; | |
9908 | while (*pm != NULL | |
9909 | && ((*pm)->p_type == PT_PHDR | |
9910 | || (*pm)->p_type == PT_INTERP)) | |
9911 | pm = &(*pm)->next; | |
9912 | ||
9913 | m->next = *pm; | |
9914 | *pm = m; | |
9915 | } | |
9916 | } | |
9917 | ||
9918 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but | |
9919 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 9920 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 9921 | table. */ |
c1fd6598 AO |
9922 | if (NEWABI_P (abfd) |
9923 | /* On non-IRIX6 new abi, we'll have already created a segment | |
9924 | for this section, so don't create another. I'm not sure this | |
9925 | is not also the case for IRIX 6, but I can't test it right | |
9926 | now. */ | |
9927 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
9928 | { |
9929 | for (s = abfd->sections; s; s = s->next) | |
9930 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
9931 | break; | |
9932 | ||
9933 | if (s) | |
9934 | { | |
9935 | struct elf_segment_map *options_segment; | |
9936 | ||
98a8deaf RS |
9937 | pm = &elf_tdata (abfd)->segment_map; |
9938 | while (*pm != NULL | |
9939 | && ((*pm)->p_type == PT_PHDR | |
9940 | || (*pm)->p_type == PT_INTERP)) | |
9941 | pm = &(*pm)->next; | |
b49e97c9 | 9942 | |
8ded5a0f AM |
9943 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
9944 | { | |
9945 | amt = sizeof (struct elf_segment_map); | |
9946 | options_segment = bfd_zalloc (abfd, amt); | |
9947 | options_segment->next = *pm; | |
9948 | options_segment->p_type = PT_MIPS_OPTIONS; | |
9949 | options_segment->p_flags = PF_R; | |
9950 | options_segment->p_flags_valid = TRUE; | |
9951 | options_segment->count = 1; | |
9952 | options_segment->sections[0] = s; | |
9953 | *pm = options_segment; | |
9954 | } | |
b49e97c9 TS |
9955 | } |
9956 | } | |
9957 | else | |
9958 | { | |
9959 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
9960 | { | |
9961 | /* If there are .dynamic and .mdebug sections, we make a room | |
9962 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
9963 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
9964 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
9965 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
9966 | { | |
9967 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
9968 | if (m->p_type == PT_MIPS_RTPROC) | |
9969 | break; | |
9970 | if (m == NULL) | |
9971 | { | |
9972 | amt = sizeof *m; | |
9719ad41 | 9973 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 9974 | if (m == NULL) |
b34976b6 | 9975 | return FALSE; |
b49e97c9 TS |
9976 | |
9977 | m->p_type = PT_MIPS_RTPROC; | |
9978 | ||
9979 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
9980 | if (s == NULL) | |
9981 | { | |
9982 | m->count = 0; | |
9983 | m->p_flags = 0; | |
9984 | m->p_flags_valid = 1; | |
9985 | } | |
9986 | else | |
9987 | { | |
9988 | m->count = 1; | |
9989 | m->sections[0] = s; | |
9990 | } | |
9991 | ||
9992 | /* We want to put it after the DYNAMIC segment. */ | |
9993 | pm = &elf_tdata (abfd)->segment_map; | |
9994 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
9995 | pm = &(*pm)->next; | |
9996 | if (*pm != NULL) | |
9997 | pm = &(*pm)->next; | |
9998 | ||
9999 | m->next = *pm; | |
10000 | *pm = m; | |
10001 | } | |
10002 | } | |
10003 | } | |
8dc1a139 | 10004 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
10005 | .dynstr, .dynsym, and .hash sections, and everything in |
10006 | between. */ | |
10007 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; | |
10008 | pm = &(*pm)->next) | |
10009 | if ((*pm)->p_type == PT_DYNAMIC) | |
10010 | break; | |
10011 | m = *pm; | |
10012 | if (m != NULL && IRIX_COMPAT (abfd) == ict_none) | |
10013 | { | |
10014 | /* For a normal mips executable the permissions for the PT_DYNAMIC | |
10015 | segment are read, write and execute. We do that here since | |
10016 | the code in elf.c sets only the read permission. This matters | |
10017 | sometimes for the dynamic linker. */ | |
10018 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
10019 | { | |
10020 | m->p_flags = PF_R | PF_W | PF_X; | |
10021 | m->p_flags_valid = 1; | |
10022 | } | |
10023 | } | |
f6f62d6f RS |
10024 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
10025 | glibc's dynamic linker has traditionally derived the number of | |
10026 | tags from the p_filesz field, and sometimes allocates stack | |
10027 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
10028 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
10029 | other sections can also make life hard for the prelinker, | |
10030 | which might move one of the other sections to a different | |
10031 | PT_LOAD segment. */ | |
10032 | if (SGI_COMPAT (abfd) | |
10033 | && m != NULL | |
10034 | && m->count == 1 | |
10035 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
10036 | { |
10037 | static const char *sec_names[] = | |
10038 | { | |
10039 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
10040 | }; | |
10041 | bfd_vma low, high; | |
10042 | unsigned int i, c; | |
10043 | struct elf_segment_map *n; | |
10044 | ||
792b4a53 | 10045 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
10046 | high = 0; |
10047 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
10048 | { | |
10049 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
10050 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
10051 | { | |
10052 | bfd_size_type sz; | |
10053 | ||
10054 | if (low > s->vma) | |
10055 | low = s->vma; | |
eea6121a | 10056 | sz = s->size; |
b49e97c9 TS |
10057 | if (high < s->vma + sz) |
10058 | high = s->vma + sz; | |
10059 | } | |
10060 | } | |
10061 | ||
10062 | c = 0; | |
10063 | for (s = abfd->sections; s != NULL; s = s->next) | |
10064 | if ((s->flags & SEC_LOAD) != 0 | |
10065 | && s->vma >= low | |
eea6121a | 10066 | && s->vma + s->size <= high) |
b49e97c9 TS |
10067 | ++c; |
10068 | ||
10069 | amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *); | |
9719ad41 | 10070 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 10071 | if (n == NULL) |
b34976b6 | 10072 | return FALSE; |
b49e97c9 TS |
10073 | *n = *m; |
10074 | n->count = c; | |
10075 | ||
10076 | i = 0; | |
10077 | for (s = abfd->sections; s != NULL; s = s->next) | |
10078 | { | |
10079 | if ((s->flags & SEC_LOAD) != 0 | |
10080 | && s->vma >= low | |
eea6121a | 10081 | && s->vma + s->size <= high) |
b49e97c9 TS |
10082 | { |
10083 | n->sections[i] = s; | |
10084 | ++i; | |
10085 | } | |
10086 | } | |
10087 | ||
10088 | *pm = n; | |
10089 | } | |
10090 | } | |
10091 | ||
98c904a8 RS |
10092 | /* Allocate a spare program header in dynamic objects so that tools |
10093 | like the prelinker can add an extra PT_LOAD entry. | |
10094 | ||
10095 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
10096 | standard procedure is to move the first (read-only) sections into | |
10097 | the new (writable) segment. However, the MIPS ABI requires | |
10098 | .dynamic to be in a read-only segment, and the section will often | |
10099 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
10100 | ||
10101 | Although the prelinker could in principle move .dynamic to a | |
10102 | writable segment, it seems better to allocate a spare program | |
10103 | header instead, and avoid the need to move any sections. | |
10104 | There is a long tradition of allocating spare dynamic tags, | |
10105 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
10106 | extension. |
10107 | ||
10108 | If INFO is NULL, we may be copying an already prelinked binary | |
10109 | with objcopy or strip, so do not add this header. */ | |
10110 | if (info != NULL | |
10111 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
10112 | && bfd_get_section_by_name (abfd, ".dynamic")) |
10113 | { | |
10114 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
10115 | if ((*pm)->p_type == PT_NULL) | |
10116 | break; | |
10117 | if (*pm == NULL) | |
10118 | { | |
10119 | m = bfd_zalloc (abfd, sizeof (*m)); | |
10120 | if (m == NULL) | |
10121 | return FALSE; | |
10122 | ||
10123 | m->p_type = PT_NULL; | |
10124 | *pm = m; | |
10125 | } | |
10126 | } | |
10127 | ||
b34976b6 | 10128 | return TRUE; |
b49e97c9 TS |
10129 | } |
10130 | \f | |
10131 | /* Return the section that should be marked against GC for a given | |
10132 | relocation. */ | |
10133 | ||
10134 | asection * | |
9719ad41 | 10135 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 10136 | struct bfd_link_info *info, |
9719ad41 RS |
10137 | Elf_Internal_Rela *rel, |
10138 | struct elf_link_hash_entry *h, | |
10139 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10140 | { |
10141 | /* ??? Do mips16 stub sections need to be handled special? */ | |
10142 | ||
10143 | if (h != NULL) | |
07adf181 AM |
10144 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
10145 | { | |
10146 | case R_MIPS_GNU_VTINHERIT: | |
10147 | case R_MIPS_GNU_VTENTRY: | |
10148 | return NULL; | |
10149 | } | |
b49e97c9 | 10150 | |
07adf181 | 10151 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
10152 | } |
10153 | ||
10154 | /* Update the got entry reference counts for the section being removed. */ | |
10155 | ||
b34976b6 | 10156 | bfd_boolean |
9719ad41 RS |
10157 | _bfd_mips_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
10158 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
10159 | asection *sec ATTRIBUTE_UNUSED, | |
10160 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
10161 | { |
10162 | #if 0 | |
10163 | Elf_Internal_Shdr *symtab_hdr; | |
10164 | struct elf_link_hash_entry **sym_hashes; | |
10165 | bfd_signed_vma *local_got_refcounts; | |
10166 | const Elf_Internal_Rela *rel, *relend; | |
10167 | unsigned long r_symndx; | |
10168 | struct elf_link_hash_entry *h; | |
10169 | ||
7dda2462 TG |
10170 | if (info->relocatable) |
10171 | return TRUE; | |
10172 | ||
b49e97c9 TS |
10173 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
10174 | sym_hashes = elf_sym_hashes (abfd); | |
10175 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
10176 | ||
10177 | relend = relocs + sec->reloc_count; | |
10178 | for (rel = relocs; rel < relend; rel++) | |
10179 | switch (ELF_R_TYPE (abfd, rel->r_info)) | |
10180 | { | |
738e5348 RS |
10181 | case R_MIPS16_GOT16: |
10182 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
10183 | case R_MIPS_GOT16: |
10184 | case R_MIPS_CALL16: | |
10185 | case R_MIPS_CALL_HI16: | |
10186 | case R_MIPS_CALL_LO16: | |
10187 | case R_MIPS_GOT_HI16: | |
10188 | case R_MIPS_GOT_LO16: | |
4a14403c TS |
10189 | case R_MIPS_GOT_DISP: |
10190 | case R_MIPS_GOT_PAGE: | |
10191 | case R_MIPS_GOT_OFST: | |
b49e97c9 TS |
10192 | /* ??? It would seem that the existing MIPS code does no sort |
10193 | of reference counting or whatnot on its GOT and PLT entries, | |
10194 | so it is not possible to garbage collect them at this time. */ | |
10195 | break; | |
10196 | ||
10197 | default: | |
10198 | break; | |
10199 | } | |
10200 | #endif | |
10201 | ||
b34976b6 | 10202 | return TRUE; |
b49e97c9 TS |
10203 | } |
10204 | \f | |
10205 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
10206 | hiding the old indirect symbol. Process additional relocation | |
10207 | information. Also called for weakdefs, in which case we just let | |
10208 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
10209 | ||
10210 | void | |
fcfa13d2 | 10211 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
10212 | struct elf_link_hash_entry *dir, |
10213 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
10214 | { |
10215 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
10216 | ||
fcfa13d2 | 10217 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 TS |
10218 | |
10219 | if (ind->root.type != bfd_link_hash_indirect) | |
10220 | return; | |
10221 | ||
10222 | dirmips = (struct mips_elf_link_hash_entry *) dir; | |
10223 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
10224 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; | |
10225 | if (indmips->readonly_reloc) | |
b34976b6 | 10226 | dirmips->readonly_reloc = TRUE; |
b49e97c9 | 10227 | if (indmips->no_fn_stub) |
b34976b6 | 10228 | dirmips->no_fn_stub = TRUE; |
0f20cc35 DJ |
10229 | |
10230 | if (dirmips->tls_type == 0) | |
10231 | dirmips->tls_type = indmips->tls_type; | |
b49e97c9 TS |
10232 | } |
10233 | ||
10234 | void | |
9719ad41 RS |
10235 | _bfd_mips_elf_hide_symbol (struct bfd_link_info *info, |
10236 | struct elf_link_hash_entry *entry, | |
10237 | bfd_boolean force_local) | |
b49e97c9 TS |
10238 | { |
10239 | bfd *dynobj; | |
10240 | asection *got; | |
10241 | struct mips_got_info *g; | |
10242 | struct mips_elf_link_hash_entry *h; | |
8275b357 | 10243 | struct mips_elf_link_hash_table *htab; |
7c5fcef7 | 10244 | |
b49e97c9 | 10245 | h = (struct mips_elf_link_hash_entry *) entry; |
7c5fcef7 L |
10246 | if (h->forced_local) |
10247 | return; | |
4b555070 | 10248 | h->forced_local = force_local; |
7c5fcef7 | 10249 | |
b49e97c9 | 10250 | dynobj = elf_hash_table (info)->dynobj; |
8275b357 | 10251 | htab = mips_elf_hash_table (info); |
8d1d654f | 10252 | if (dynobj != NULL && force_local && h->root.type != STT_TLS |
003b8e1d | 10253 | && (got = mips_elf_got_section (dynobj, TRUE)) != NULL |
8d1d654f | 10254 | && (g = mips_elf_section_data (got)->u.got_info) != NULL) |
f4416af6 | 10255 | { |
c45a316a AM |
10256 | if (g->next) |
10257 | { | |
10258 | struct mips_got_entry e; | |
10259 | struct mips_got_info *gg = g; | |
10260 | ||
10261 | /* Since we're turning what used to be a global symbol into a | |
10262 | local one, bump up the number of local entries of each GOT | |
10263 | that had an entry for it. This will automatically decrease | |
10264 | the number of global entries, since global_gotno is actually | |
10265 | the upper limit of global entries. */ | |
10266 | e.abfd = dynobj; | |
10267 | e.symndx = -1; | |
10268 | e.d.h = h; | |
0f20cc35 | 10269 | e.tls_type = 0; |
c45a316a AM |
10270 | |
10271 | for (g = g->next; g != gg; g = g->next) | |
10272 | if (htab_find (g->got_entries, &e)) | |
10273 | { | |
10274 | BFD_ASSERT (g->global_gotno > 0); | |
10275 | g->local_gotno++; | |
10276 | g->global_gotno--; | |
10277 | } | |
b49e97c9 | 10278 | |
c45a316a AM |
10279 | /* If this was a global symbol forced into the primary GOT, we |
10280 | no longer need an entry for it. We can't release the entry | |
10281 | at this point, but we must at least stop counting it as one | |
10282 | of the symbols that required a forced got entry. */ | |
10283 | if (h->root.got.offset == 2) | |
10284 | { | |
10285 | BFD_ASSERT (gg->assigned_gotno > 0); | |
10286 | gg->assigned_gotno--; | |
10287 | } | |
10288 | } | |
c45a316a | 10289 | else if (h->root.got.offset == 1) |
f4416af6 | 10290 | { |
8275b357 RS |
10291 | /* check_relocs didn't know that this symbol would be |
10292 | forced-local, so add an extra local got entry. */ | |
c45a316a | 10293 | g->local_gotno++; |
8275b357 RS |
10294 | if (htab->computed_got_sizes) |
10295 | { | |
10296 | /* We'll have treated this symbol as global rather | |
10297 | than local. */ | |
10298 | BFD_ASSERT (g->global_gotno > 0); | |
10299 | g->global_gotno--; | |
10300 | } | |
f4416af6 | 10301 | } |
8275b357 RS |
10302 | else if (htab->is_vxworks && h->root.needs_plt) |
10303 | { | |
10304 | /* check_relocs didn't know that this symbol would be | |
10305 | forced-local, so add an extra local got entry. */ | |
10306 | g->local_gotno++; | |
10307 | if (htab->computed_got_sizes) | |
10308 | /* The symbol is only used in call relocations, so we'll | |
10309 | have assumed it only needs a .got.plt entry. Increase | |
10310 | the size of .got accordingly. */ | |
10311 | got->size += MIPS_ELF_GOT_SIZE (dynobj); | |
10312 | } | |
f4416af6 | 10313 | } |
f4416af6 AO |
10314 | |
10315 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
b49e97c9 TS |
10316 | } |
10317 | \f | |
d01414a5 TS |
10318 | #define PDR_SIZE 32 |
10319 | ||
b34976b6 | 10320 | bfd_boolean |
9719ad41 RS |
10321 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
10322 | struct bfd_link_info *info) | |
d01414a5 TS |
10323 | { |
10324 | asection *o; | |
b34976b6 | 10325 | bfd_boolean ret = FALSE; |
d01414a5 TS |
10326 | unsigned char *tdata; |
10327 | size_t i, skip; | |
10328 | ||
10329 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
10330 | if (! o) | |
b34976b6 | 10331 | return FALSE; |
eea6121a | 10332 | if (o->size == 0) |
b34976b6 | 10333 | return FALSE; |
eea6121a | 10334 | if (o->size % PDR_SIZE != 0) |
b34976b6 | 10335 | return FALSE; |
d01414a5 TS |
10336 | if (o->output_section != NULL |
10337 | && bfd_is_abs_section (o->output_section)) | |
b34976b6 | 10338 | return FALSE; |
d01414a5 | 10339 | |
eea6121a | 10340 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 10341 | if (! tdata) |
b34976b6 | 10342 | return FALSE; |
d01414a5 | 10343 | |
9719ad41 | 10344 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 10345 | info->keep_memory); |
d01414a5 TS |
10346 | if (!cookie->rels) |
10347 | { | |
10348 | free (tdata); | |
b34976b6 | 10349 | return FALSE; |
d01414a5 TS |
10350 | } |
10351 | ||
10352 | cookie->rel = cookie->rels; | |
10353 | cookie->relend = cookie->rels + o->reloc_count; | |
10354 | ||
eea6121a | 10355 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 10356 | { |
c152c796 | 10357 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
10358 | { |
10359 | tdata[i] = 1; | |
10360 | skip ++; | |
10361 | } | |
10362 | } | |
10363 | ||
10364 | if (skip != 0) | |
10365 | { | |
f0abc2a1 | 10366 | mips_elf_section_data (o)->u.tdata = tdata; |
eea6121a | 10367 | o->size -= skip * PDR_SIZE; |
b34976b6 | 10368 | ret = TRUE; |
d01414a5 TS |
10369 | } |
10370 | else | |
10371 | free (tdata); | |
10372 | ||
10373 | if (! info->keep_memory) | |
10374 | free (cookie->rels); | |
10375 | ||
10376 | return ret; | |
10377 | } | |
10378 | ||
b34976b6 | 10379 | bfd_boolean |
9719ad41 | 10380 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
10381 | { |
10382 | if (strcmp (sec->name, ".pdr") == 0) | |
b34976b6 AM |
10383 | return TRUE; |
10384 | return FALSE; | |
53bfd6b4 | 10385 | } |
d01414a5 | 10386 | |
b34976b6 | 10387 | bfd_boolean |
c7b8f16e JB |
10388 | _bfd_mips_elf_write_section (bfd *output_bfd, |
10389 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
10390 | asection *sec, bfd_byte *contents) | |
d01414a5 TS |
10391 | { |
10392 | bfd_byte *to, *from, *end; | |
10393 | int i; | |
10394 | ||
10395 | if (strcmp (sec->name, ".pdr") != 0) | |
b34976b6 | 10396 | return FALSE; |
d01414a5 | 10397 | |
f0abc2a1 | 10398 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
b34976b6 | 10399 | return FALSE; |
d01414a5 TS |
10400 | |
10401 | to = contents; | |
eea6121a | 10402 | end = contents + sec->size; |
d01414a5 TS |
10403 | for (from = contents, i = 0; |
10404 | from < end; | |
10405 | from += PDR_SIZE, i++) | |
10406 | { | |
f0abc2a1 | 10407 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
10408 | continue; |
10409 | if (to != from) | |
10410 | memcpy (to, from, PDR_SIZE); | |
10411 | to += PDR_SIZE; | |
10412 | } | |
10413 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 10414 | sec->output_offset, sec->size); |
b34976b6 | 10415 | return TRUE; |
d01414a5 | 10416 | } |
53bfd6b4 | 10417 | \f |
b49e97c9 TS |
10418 | /* MIPS ELF uses a special find_nearest_line routine in order the |
10419 | handle the ECOFF debugging information. */ | |
10420 | ||
10421 | struct mips_elf_find_line | |
10422 | { | |
10423 | struct ecoff_debug_info d; | |
10424 | struct ecoff_find_line i; | |
10425 | }; | |
10426 | ||
b34976b6 | 10427 | bfd_boolean |
9719ad41 RS |
10428 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section, |
10429 | asymbol **symbols, bfd_vma offset, | |
10430 | const char **filename_ptr, | |
10431 | const char **functionname_ptr, | |
10432 | unsigned int *line_ptr) | |
b49e97c9 TS |
10433 | { |
10434 | asection *msec; | |
10435 | ||
10436 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
10437 | filename_ptr, functionname_ptr, | |
10438 | line_ptr)) | |
b34976b6 | 10439 | return TRUE; |
b49e97c9 TS |
10440 | |
10441 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
10442 | filename_ptr, functionname_ptr, | |
9719ad41 | 10443 | line_ptr, ABI_64_P (abfd) ? 8 : 0, |
b49e97c9 | 10444 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
b34976b6 | 10445 | return TRUE; |
b49e97c9 TS |
10446 | |
10447 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
10448 | if (msec != NULL) | |
10449 | { | |
10450 | flagword origflags; | |
10451 | struct mips_elf_find_line *fi; | |
10452 | const struct ecoff_debug_swap * const swap = | |
10453 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
10454 | ||
10455 | /* If we are called during a link, mips_elf_final_link may have | |
10456 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
10457 | if appropriate (which it normally will be). */ | |
10458 | origflags = msec->flags; | |
10459 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
10460 | msec->flags |= SEC_HAS_CONTENTS; | |
10461 | ||
10462 | fi = elf_tdata (abfd)->find_line_info; | |
10463 | if (fi == NULL) | |
10464 | { | |
10465 | bfd_size_type external_fdr_size; | |
10466 | char *fraw_src; | |
10467 | char *fraw_end; | |
10468 | struct fdr *fdr_ptr; | |
10469 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
10470 | ||
9719ad41 | 10471 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
10472 | if (fi == NULL) |
10473 | { | |
10474 | msec->flags = origflags; | |
b34976b6 | 10475 | return FALSE; |
b49e97c9 TS |
10476 | } |
10477 | ||
10478 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
10479 | { | |
10480 | msec->flags = origflags; | |
b34976b6 | 10481 | return FALSE; |
b49e97c9 TS |
10482 | } |
10483 | ||
10484 | /* Swap in the FDR information. */ | |
10485 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 10486 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
10487 | if (fi->d.fdr == NULL) |
10488 | { | |
10489 | msec->flags = origflags; | |
b34976b6 | 10490 | return FALSE; |
b49e97c9 TS |
10491 | } |
10492 | external_fdr_size = swap->external_fdr_size; | |
10493 | fdr_ptr = fi->d.fdr; | |
10494 | fraw_src = (char *) fi->d.external_fdr; | |
10495 | fraw_end = (fraw_src | |
10496 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
10497 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 10498 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 TS |
10499 | |
10500 | elf_tdata (abfd)->find_line_info = fi; | |
10501 | ||
10502 | /* Note that we don't bother to ever free this information. | |
10503 | find_nearest_line is either called all the time, as in | |
10504 | objdump -l, so the information should be saved, or it is | |
10505 | rarely called, as in ld error messages, so the memory | |
10506 | wasted is unimportant. Still, it would probably be a | |
10507 | good idea for free_cached_info to throw it away. */ | |
10508 | } | |
10509 | ||
10510 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
10511 | &fi->i, filename_ptr, functionname_ptr, | |
10512 | line_ptr)) | |
10513 | { | |
10514 | msec->flags = origflags; | |
b34976b6 | 10515 | return TRUE; |
b49e97c9 TS |
10516 | } |
10517 | ||
10518 | msec->flags = origflags; | |
10519 | } | |
10520 | ||
10521 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
10522 | ||
10523 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
10524 | filename_ptr, functionname_ptr, | |
10525 | line_ptr); | |
10526 | } | |
4ab527b0 FF |
10527 | |
10528 | bfd_boolean | |
10529 | _bfd_mips_elf_find_inliner_info (bfd *abfd, | |
10530 | const char **filename_ptr, | |
10531 | const char **functionname_ptr, | |
10532 | unsigned int *line_ptr) | |
10533 | { | |
10534 | bfd_boolean found; | |
10535 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
10536 | functionname_ptr, line_ptr, | |
10537 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
10538 | return found; | |
10539 | } | |
10540 | ||
b49e97c9 TS |
10541 | \f |
10542 | /* When are writing out the .options or .MIPS.options section, | |
10543 | remember the bytes we are writing out, so that we can install the | |
10544 | GP value in the section_processing routine. */ | |
10545 | ||
b34976b6 | 10546 | bfd_boolean |
9719ad41 RS |
10547 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
10548 | const void *location, | |
10549 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 10550 | { |
cc2e31b9 | 10551 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
10552 | { |
10553 | bfd_byte *c; | |
10554 | ||
10555 | if (elf_section_data (section) == NULL) | |
10556 | { | |
10557 | bfd_size_type amt = sizeof (struct bfd_elf_section_data); | |
9719ad41 | 10558 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 10559 | if (elf_section_data (section) == NULL) |
b34976b6 | 10560 | return FALSE; |
b49e97c9 | 10561 | } |
f0abc2a1 | 10562 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
10563 | if (c == NULL) |
10564 | { | |
eea6121a | 10565 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 10566 | if (c == NULL) |
b34976b6 | 10567 | return FALSE; |
f0abc2a1 | 10568 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
10569 | } |
10570 | ||
9719ad41 | 10571 | memcpy (c + offset, location, count); |
b49e97c9 TS |
10572 | } |
10573 | ||
10574 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
10575 | count); | |
10576 | } | |
10577 | ||
10578 | /* This is almost identical to bfd_generic_get_... except that some | |
10579 | MIPS relocations need to be handled specially. Sigh. */ | |
10580 | ||
10581 | bfd_byte * | |
9719ad41 RS |
10582 | _bfd_elf_mips_get_relocated_section_contents |
10583 | (bfd *abfd, | |
10584 | struct bfd_link_info *link_info, | |
10585 | struct bfd_link_order *link_order, | |
10586 | bfd_byte *data, | |
10587 | bfd_boolean relocatable, | |
10588 | asymbol **symbols) | |
b49e97c9 TS |
10589 | { |
10590 | /* Get enough memory to hold the stuff */ | |
10591 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
10592 | asection *input_section = link_order->u.indirect.section; | |
eea6121a | 10593 | bfd_size_type sz; |
b49e97c9 TS |
10594 | |
10595 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
10596 | arelent **reloc_vector = NULL; | |
10597 | long reloc_count; | |
10598 | ||
10599 | if (reloc_size < 0) | |
10600 | goto error_return; | |
10601 | ||
9719ad41 | 10602 | reloc_vector = bfd_malloc (reloc_size); |
b49e97c9 TS |
10603 | if (reloc_vector == NULL && reloc_size != 0) |
10604 | goto error_return; | |
10605 | ||
10606 | /* read in the section */ | |
eea6121a AM |
10607 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
10608 | if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
b49e97c9 TS |
10609 | goto error_return; |
10610 | ||
b49e97c9 TS |
10611 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
10612 | input_section, | |
10613 | reloc_vector, | |
10614 | symbols); | |
10615 | if (reloc_count < 0) | |
10616 | goto error_return; | |
10617 | ||
10618 | if (reloc_count > 0) | |
10619 | { | |
10620 | arelent **parent; | |
10621 | /* for mips */ | |
10622 | int gp_found; | |
10623 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
10624 | ||
10625 | { | |
10626 | struct bfd_hash_entry *h; | |
10627 | struct bfd_link_hash_entry *lh; | |
10628 | /* Skip all this stuff if we aren't mixing formats. */ | |
10629 | if (abfd && input_bfd | |
10630 | && abfd->xvec == input_bfd->xvec) | |
10631 | lh = 0; | |
10632 | else | |
10633 | { | |
b34976b6 | 10634 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE); |
b49e97c9 TS |
10635 | lh = (struct bfd_link_hash_entry *) h; |
10636 | } | |
10637 | lookup: | |
10638 | if (lh) | |
10639 | { | |
10640 | switch (lh->type) | |
10641 | { | |
10642 | case bfd_link_hash_undefined: | |
10643 | case bfd_link_hash_undefweak: | |
10644 | case bfd_link_hash_common: | |
10645 | gp_found = 0; | |
10646 | break; | |
10647 | case bfd_link_hash_defined: | |
10648 | case bfd_link_hash_defweak: | |
10649 | gp_found = 1; | |
10650 | gp = lh->u.def.value; | |
10651 | break; | |
10652 | case bfd_link_hash_indirect: | |
10653 | case bfd_link_hash_warning: | |
10654 | lh = lh->u.i.link; | |
10655 | /* @@FIXME ignoring warning for now */ | |
10656 | goto lookup; | |
10657 | case bfd_link_hash_new: | |
10658 | default: | |
10659 | abort (); | |
10660 | } | |
10661 | } | |
10662 | else | |
10663 | gp_found = 0; | |
10664 | } | |
10665 | /* end mips */ | |
9719ad41 | 10666 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 10667 | { |
9719ad41 | 10668 | char *error_message = NULL; |
b49e97c9 TS |
10669 | bfd_reloc_status_type r; |
10670 | ||
10671 | /* Specific to MIPS: Deal with relocation types that require | |
10672 | knowing the gp of the output bfd. */ | |
10673 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
b49e97c9 | 10674 | |
8236346f EC |
10675 | /* If we've managed to find the gp and have a special |
10676 | function for the relocation then go ahead, else default | |
10677 | to the generic handling. */ | |
10678 | if (gp_found | |
10679 | && (*parent)->howto->special_function | |
10680 | == _bfd_mips_elf32_gprel16_reloc) | |
10681 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent, | |
10682 | input_section, relocatable, | |
10683 | data, gp); | |
10684 | else | |
86324f90 | 10685 | r = bfd_perform_relocation (input_bfd, *parent, data, |
8236346f EC |
10686 | input_section, |
10687 | relocatable ? abfd : NULL, | |
10688 | &error_message); | |
b49e97c9 | 10689 | |
1049f94e | 10690 | if (relocatable) |
b49e97c9 TS |
10691 | { |
10692 | asection *os = input_section->output_section; | |
10693 | ||
10694 | /* A partial link, so keep the relocs */ | |
10695 | os->orelocation[os->reloc_count] = *parent; | |
10696 | os->reloc_count++; | |
10697 | } | |
10698 | ||
10699 | if (r != bfd_reloc_ok) | |
10700 | { | |
10701 | switch (r) | |
10702 | { | |
10703 | case bfd_reloc_undefined: | |
10704 | if (!((*link_info->callbacks->undefined_symbol) | |
10705 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
5e2b0d47 | 10706 | input_bfd, input_section, (*parent)->address, TRUE))) |
b49e97c9 TS |
10707 | goto error_return; |
10708 | break; | |
10709 | case bfd_reloc_dangerous: | |
9719ad41 | 10710 | BFD_ASSERT (error_message != NULL); |
b49e97c9 TS |
10711 | if (!((*link_info->callbacks->reloc_dangerous) |
10712 | (link_info, error_message, input_bfd, input_section, | |
10713 | (*parent)->address))) | |
10714 | goto error_return; | |
10715 | break; | |
10716 | case bfd_reloc_overflow: | |
10717 | if (!((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
10718 | (link_info, NULL, |
10719 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
b49e97c9 TS |
10720 | (*parent)->howto->name, (*parent)->addend, |
10721 | input_bfd, input_section, (*parent)->address))) | |
10722 | goto error_return; | |
10723 | break; | |
10724 | case bfd_reloc_outofrange: | |
10725 | default: | |
10726 | abort (); | |
10727 | break; | |
10728 | } | |
10729 | ||
10730 | } | |
10731 | } | |
10732 | } | |
10733 | if (reloc_vector != NULL) | |
10734 | free (reloc_vector); | |
10735 | return data; | |
10736 | ||
10737 | error_return: | |
10738 | if (reloc_vector != NULL) | |
10739 | free (reloc_vector); | |
10740 | return NULL; | |
10741 | } | |
10742 | \f | |
10743 | /* Create a MIPS ELF linker hash table. */ | |
10744 | ||
10745 | struct bfd_link_hash_table * | |
9719ad41 | 10746 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
10747 | { |
10748 | struct mips_elf_link_hash_table *ret; | |
10749 | bfd_size_type amt = sizeof (struct mips_elf_link_hash_table); | |
10750 | ||
9719ad41 RS |
10751 | ret = bfd_malloc (amt); |
10752 | if (ret == NULL) | |
b49e97c9 TS |
10753 | return NULL; |
10754 | ||
66eb6687 AM |
10755 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
10756 | mips_elf_link_hash_newfunc, | |
10757 | sizeof (struct mips_elf_link_hash_entry))) | |
b49e97c9 | 10758 | { |
e2d34d7d | 10759 | free (ret); |
b49e97c9 TS |
10760 | return NULL; |
10761 | } | |
10762 | ||
10763 | #if 0 | |
10764 | /* We no longer use this. */ | |
10765 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) | |
10766 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
10767 | #endif | |
10768 | ret->procedure_count = 0; | |
10769 | ret->compact_rel_size = 0; | |
b34976b6 | 10770 | ret->use_rld_obj_head = FALSE; |
b49e97c9 | 10771 | ret->rld_value = 0; |
b34976b6 | 10772 | ret->mips16_stubs_seen = FALSE; |
8275b357 | 10773 | ret->computed_got_sizes = FALSE; |
0a44bf69 | 10774 | ret->is_vxworks = FALSE; |
0e53d9da | 10775 | ret->small_data_overflow_reported = FALSE; |
0a44bf69 RS |
10776 | ret->srelbss = NULL; |
10777 | ret->sdynbss = NULL; | |
10778 | ret->srelplt = NULL; | |
10779 | ret->srelplt2 = NULL; | |
10780 | ret->sgotplt = NULL; | |
10781 | ret->splt = NULL; | |
4e41d0d7 | 10782 | ret->sstubs = NULL; |
0a44bf69 RS |
10783 | ret->plt_header_size = 0; |
10784 | ret->plt_entry_size = 0; | |
5108fc1b | 10785 | ret->function_stub_size = 0; |
b49e97c9 TS |
10786 | |
10787 | return &ret->root.root; | |
10788 | } | |
0a44bf69 RS |
10789 | |
10790 | /* Likewise, but indicate that the target is VxWorks. */ | |
10791 | ||
10792 | struct bfd_link_hash_table * | |
10793 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
10794 | { | |
10795 | struct bfd_link_hash_table *ret; | |
10796 | ||
10797 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
10798 | if (ret) | |
10799 | { | |
10800 | struct mips_elf_link_hash_table *htab; | |
10801 | ||
10802 | htab = (struct mips_elf_link_hash_table *) ret; | |
10803 | htab->is_vxworks = 1; | |
10804 | } | |
10805 | return ret; | |
10806 | } | |
b49e97c9 TS |
10807 | \f |
10808 | /* We need to use a special link routine to handle the .reginfo and | |
10809 | the .mdebug sections. We need to merge all instances of these | |
10810 | sections together, not write them all out sequentially. */ | |
10811 | ||
b34976b6 | 10812 | bfd_boolean |
9719ad41 | 10813 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 10814 | { |
b49e97c9 TS |
10815 | asection *o; |
10816 | struct bfd_link_order *p; | |
10817 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
10818 | asection *rtproc_sec; | |
10819 | Elf32_RegInfo reginfo; | |
10820 | struct ecoff_debug_info debug; | |
7a2a6943 NC |
10821 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
10822 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 10823 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 10824 | void *mdebug_handle = NULL; |
b49e97c9 TS |
10825 | asection *s; |
10826 | EXTR esym; | |
10827 | unsigned int i; | |
10828 | bfd_size_type amt; | |
0a44bf69 | 10829 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
10830 | |
10831 | static const char * const secname[] = | |
10832 | { | |
10833 | ".text", ".init", ".fini", ".data", | |
10834 | ".rodata", ".sdata", ".sbss", ".bss" | |
10835 | }; | |
10836 | static const int sc[] = | |
10837 | { | |
10838 | scText, scInit, scFini, scData, | |
10839 | scRData, scSData, scSBss, scBss | |
10840 | }; | |
10841 | ||
b49e97c9 TS |
10842 | /* We'd carefully arranged the dynamic symbol indices, and then the |
10843 | generic size_dynamic_sections renumbered them out from under us. | |
10844 | Rather than trying somehow to prevent the renumbering, just do | |
10845 | the sort again. */ | |
0a44bf69 | 10846 | htab = mips_elf_hash_table (info); |
b49e97c9 TS |
10847 | if (elf_hash_table (info)->dynamic_sections_created) |
10848 | { | |
10849 | bfd *dynobj; | |
10850 | asection *got; | |
10851 | struct mips_got_info *g; | |
7a2a6943 | 10852 | bfd_size_type dynsecsymcount; |
b49e97c9 TS |
10853 | |
10854 | /* When we resort, we must tell mips_elf_sort_hash_table what | |
10855 | the lowest index it may use is. That's the number of section | |
10856 | symbols we're going to add. The generic ELF linker only | |
10857 | adds these symbols when building a shared object. Note that | |
10858 | we count the sections after (possibly) removing the .options | |
10859 | section above. */ | |
7a2a6943 | 10860 | |
5108fc1b | 10861 | dynsecsymcount = count_section_dynsyms (abfd, info); |
7a2a6943 | 10862 | if (! mips_elf_sort_hash_table (info, dynsecsymcount + 1)) |
b34976b6 | 10863 | return FALSE; |
b49e97c9 TS |
10864 | |
10865 | /* Make sure we didn't grow the global .got region. */ | |
10866 | dynobj = elf_hash_table (info)->dynobj; | |
f4416af6 | 10867 | got = mips_elf_got_section (dynobj, FALSE); |
f0abc2a1 | 10868 | g = mips_elf_section_data (got)->u.got_info; |
b49e97c9 TS |
10869 | |
10870 | if (g->global_gotsym != NULL) | |
10871 | BFD_ASSERT ((elf_hash_table (info)->dynsymcount | |
10872 | - g->global_gotsym->dynindx) | |
10873 | <= g->global_gotno); | |
10874 | } | |
10875 | ||
b49e97c9 TS |
10876 | /* Get a value for the GP register. */ |
10877 | if (elf_gp (abfd) == 0) | |
10878 | { | |
10879 | struct bfd_link_hash_entry *h; | |
10880 | ||
b34976b6 | 10881 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
9719ad41 | 10882 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
10883 | elf_gp (abfd) = (h->u.def.value |
10884 | + h->u.def.section->output_section->vma | |
10885 | + h->u.def.section->output_offset); | |
0a44bf69 RS |
10886 | else if (htab->is_vxworks |
10887 | && (h = bfd_link_hash_lookup (info->hash, | |
10888 | "_GLOBAL_OFFSET_TABLE_", | |
10889 | FALSE, FALSE, TRUE)) | |
10890 | && h->type == bfd_link_hash_defined) | |
10891 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
10892 | + h->u.def.section->output_offset | |
10893 | + h->u.def.value); | |
1049f94e | 10894 | else if (info->relocatable) |
b49e97c9 TS |
10895 | { |
10896 | bfd_vma lo = MINUS_ONE; | |
10897 | ||
10898 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 10899 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
10900 | if (o->vma < lo |
10901 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
10902 | lo = o->vma; | |
10903 | ||
10904 | /* And calculate GP relative to that. */ | |
0a44bf69 | 10905 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
10906 | } |
10907 | else | |
10908 | { | |
10909 | /* If the relocate_section function needs to do a reloc | |
10910 | involving the GP value, it should make a reloc_dangerous | |
10911 | callback to warn that GP is not defined. */ | |
10912 | } | |
10913 | } | |
10914 | ||
10915 | /* Go through the sections and collect the .reginfo and .mdebug | |
10916 | information. */ | |
10917 | reginfo_sec = NULL; | |
10918 | mdebug_sec = NULL; | |
10919 | gptab_data_sec = NULL; | |
10920 | gptab_bss_sec = NULL; | |
9719ad41 | 10921 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
10922 | { |
10923 | if (strcmp (o->name, ".reginfo") == 0) | |
10924 | { | |
10925 | memset (®info, 0, sizeof reginfo); | |
10926 | ||
10927 | /* We have found the .reginfo section in the output file. | |
10928 | Look through all the link_orders comprising it and merge | |
10929 | the information together. */ | |
8423293d | 10930 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
10931 | { |
10932 | asection *input_section; | |
10933 | bfd *input_bfd; | |
10934 | Elf32_External_RegInfo ext; | |
10935 | Elf32_RegInfo sub; | |
10936 | ||
10937 | if (p->type != bfd_indirect_link_order) | |
10938 | { | |
10939 | if (p->type == bfd_data_link_order) | |
10940 | continue; | |
10941 | abort (); | |
10942 | } | |
10943 | ||
10944 | input_section = p->u.indirect.section; | |
10945 | input_bfd = input_section->owner; | |
10946 | ||
b49e97c9 | 10947 | if (! bfd_get_section_contents (input_bfd, input_section, |
9719ad41 | 10948 | &ext, 0, sizeof ext)) |
b34976b6 | 10949 | return FALSE; |
b49e97c9 TS |
10950 | |
10951 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
10952 | ||
10953 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
10954 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
10955 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
10956 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
10957 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
10958 | ||
10959 | /* ri_gp_value is set by the function | |
10960 | mips_elf32_section_processing when the section is | |
10961 | finally written out. */ | |
10962 | ||
10963 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
10964 | elf_link_input_bfd ignores this section. */ | |
10965 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
10966 | } | |
10967 | ||
10968 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
eea6121a | 10969 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
10970 | |
10971 | /* Skip this section later on (I don't think this currently | |
10972 | matters, but someday it might). */ | |
8423293d | 10973 | o->map_head.link_order = NULL; |
b49e97c9 TS |
10974 | |
10975 | reginfo_sec = o; | |
10976 | } | |
10977 | ||
10978 | if (strcmp (o->name, ".mdebug") == 0) | |
10979 | { | |
10980 | struct extsym_info einfo; | |
10981 | bfd_vma last; | |
10982 | ||
10983 | /* We have found the .mdebug section in the output file. | |
10984 | Look through all the link_orders comprising it and merge | |
10985 | the information together. */ | |
10986 | symhdr->magic = swap->sym_magic; | |
10987 | /* FIXME: What should the version stamp be? */ | |
10988 | symhdr->vstamp = 0; | |
10989 | symhdr->ilineMax = 0; | |
10990 | symhdr->cbLine = 0; | |
10991 | symhdr->idnMax = 0; | |
10992 | symhdr->ipdMax = 0; | |
10993 | symhdr->isymMax = 0; | |
10994 | symhdr->ioptMax = 0; | |
10995 | symhdr->iauxMax = 0; | |
10996 | symhdr->issMax = 0; | |
10997 | symhdr->issExtMax = 0; | |
10998 | symhdr->ifdMax = 0; | |
10999 | symhdr->crfd = 0; | |
11000 | symhdr->iextMax = 0; | |
11001 | ||
11002 | /* We accumulate the debugging information itself in the | |
11003 | debug_info structure. */ | |
11004 | debug.line = NULL; | |
11005 | debug.external_dnr = NULL; | |
11006 | debug.external_pdr = NULL; | |
11007 | debug.external_sym = NULL; | |
11008 | debug.external_opt = NULL; | |
11009 | debug.external_aux = NULL; | |
11010 | debug.ss = NULL; | |
11011 | debug.ssext = debug.ssext_end = NULL; | |
11012 | debug.external_fdr = NULL; | |
11013 | debug.external_rfd = NULL; | |
11014 | debug.external_ext = debug.external_ext_end = NULL; | |
11015 | ||
11016 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 11017 | if (mdebug_handle == NULL) |
b34976b6 | 11018 | return FALSE; |
b49e97c9 TS |
11019 | |
11020 | esym.jmptbl = 0; | |
11021 | esym.cobol_main = 0; | |
11022 | esym.weakext = 0; | |
11023 | esym.reserved = 0; | |
11024 | esym.ifd = ifdNil; | |
11025 | esym.asym.iss = issNil; | |
11026 | esym.asym.st = stLocal; | |
11027 | esym.asym.reserved = 0; | |
11028 | esym.asym.index = indexNil; | |
11029 | last = 0; | |
11030 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
11031 | { | |
11032 | esym.asym.sc = sc[i]; | |
11033 | s = bfd_get_section_by_name (abfd, secname[i]); | |
11034 | if (s != NULL) | |
11035 | { | |
11036 | esym.asym.value = s->vma; | |
eea6121a | 11037 | last = s->vma + s->size; |
b49e97c9 TS |
11038 | } |
11039 | else | |
11040 | esym.asym.value = last; | |
11041 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
11042 | secname[i], &esym)) | |
b34976b6 | 11043 | return FALSE; |
b49e97c9 TS |
11044 | } |
11045 | ||
8423293d | 11046 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11047 | { |
11048 | asection *input_section; | |
11049 | bfd *input_bfd; | |
11050 | const struct ecoff_debug_swap *input_swap; | |
11051 | struct ecoff_debug_info input_debug; | |
11052 | char *eraw_src; | |
11053 | char *eraw_end; | |
11054 | ||
11055 | if (p->type != bfd_indirect_link_order) | |
11056 | { | |
11057 | if (p->type == bfd_data_link_order) | |
11058 | continue; | |
11059 | abort (); | |
11060 | } | |
11061 | ||
11062 | input_section = p->u.indirect.section; | |
11063 | input_bfd = input_section->owner; | |
11064 | ||
11065 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
11066 | || (get_elf_backend_data (input_bfd) | |
11067 | ->elf_backend_ecoff_debug_swap) == NULL) | |
11068 | { | |
11069 | /* I don't know what a non MIPS ELF bfd would be | |
11070 | doing with a .mdebug section, but I don't really | |
11071 | want to deal with it. */ | |
11072 | continue; | |
11073 | } | |
11074 | ||
11075 | input_swap = (get_elf_backend_data (input_bfd) | |
11076 | ->elf_backend_ecoff_debug_swap); | |
11077 | ||
eea6121a | 11078 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
11079 | |
11080 | /* The ECOFF linking code expects that we have already | |
11081 | read in the debugging information and set up an | |
11082 | ecoff_debug_info structure, so we do that now. */ | |
11083 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
11084 | &input_debug)) | |
b34976b6 | 11085 | return FALSE; |
b49e97c9 TS |
11086 | |
11087 | if (! (bfd_ecoff_debug_accumulate | |
11088 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
11089 | &input_debug, input_swap, info))) | |
b34976b6 | 11090 | return FALSE; |
b49e97c9 TS |
11091 | |
11092 | /* Loop through the external symbols. For each one with | |
11093 | interesting information, try to find the symbol in | |
11094 | the linker global hash table and save the information | |
11095 | for the output external symbols. */ | |
11096 | eraw_src = input_debug.external_ext; | |
11097 | eraw_end = (eraw_src | |
11098 | + (input_debug.symbolic_header.iextMax | |
11099 | * input_swap->external_ext_size)); | |
11100 | for (; | |
11101 | eraw_src < eraw_end; | |
11102 | eraw_src += input_swap->external_ext_size) | |
11103 | { | |
11104 | EXTR ext; | |
11105 | const char *name; | |
11106 | struct mips_elf_link_hash_entry *h; | |
11107 | ||
9719ad41 | 11108 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
11109 | if (ext.asym.sc == scNil |
11110 | || ext.asym.sc == scUndefined | |
11111 | || ext.asym.sc == scSUndefined) | |
11112 | continue; | |
11113 | ||
11114 | name = input_debug.ssext + ext.asym.iss; | |
11115 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
b34976b6 | 11116 | name, FALSE, FALSE, TRUE); |
b49e97c9 TS |
11117 | if (h == NULL || h->esym.ifd != -2) |
11118 | continue; | |
11119 | ||
11120 | if (ext.ifd != -1) | |
11121 | { | |
11122 | BFD_ASSERT (ext.ifd | |
11123 | < input_debug.symbolic_header.ifdMax); | |
11124 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
11125 | } | |
11126 | ||
11127 | h->esym = ext; | |
11128 | } | |
11129 | ||
11130 | /* Free up the information we just read. */ | |
11131 | free (input_debug.line); | |
11132 | free (input_debug.external_dnr); | |
11133 | free (input_debug.external_pdr); | |
11134 | free (input_debug.external_sym); | |
11135 | free (input_debug.external_opt); | |
11136 | free (input_debug.external_aux); | |
11137 | free (input_debug.ss); | |
11138 | free (input_debug.ssext); | |
11139 | free (input_debug.external_fdr); | |
11140 | free (input_debug.external_rfd); | |
11141 | free (input_debug.external_ext); | |
11142 | ||
11143 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11144 | elf_link_input_bfd ignores this section. */ | |
11145 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11146 | } | |
11147 | ||
11148 | if (SGI_COMPAT (abfd) && info->shared) | |
11149 | { | |
11150 | /* Create .rtproc section. */ | |
11151 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
11152 | if (rtproc_sec == NULL) | |
11153 | { | |
11154 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
11155 | | SEC_LINKER_CREATED | SEC_READONLY); | |
11156 | ||
3496cb2a L |
11157 | rtproc_sec = bfd_make_section_with_flags (abfd, |
11158 | ".rtproc", | |
11159 | flags); | |
b49e97c9 | 11160 | if (rtproc_sec == NULL |
b49e97c9 | 11161 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) |
b34976b6 | 11162 | return FALSE; |
b49e97c9 TS |
11163 | } |
11164 | ||
11165 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
11166 | info, rtproc_sec, | |
11167 | &debug)) | |
b34976b6 | 11168 | return FALSE; |
b49e97c9 TS |
11169 | } |
11170 | ||
11171 | /* Build the external symbol information. */ | |
11172 | einfo.abfd = abfd; | |
11173 | einfo.info = info; | |
11174 | einfo.debug = &debug; | |
11175 | einfo.swap = swap; | |
b34976b6 | 11176 | einfo.failed = FALSE; |
b49e97c9 | 11177 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 11178 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 11179 | if (einfo.failed) |
b34976b6 | 11180 | return FALSE; |
b49e97c9 TS |
11181 | |
11182 | /* Set the size of the .mdebug section. */ | |
eea6121a | 11183 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
11184 | |
11185 | /* Skip this section later on (I don't think this currently | |
11186 | matters, but someday it might). */ | |
8423293d | 11187 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11188 | |
11189 | mdebug_sec = o; | |
11190 | } | |
11191 | ||
0112cd26 | 11192 | if (CONST_STRNEQ (o->name, ".gptab.")) |
b49e97c9 TS |
11193 | { |
11194 | const char *subname; | |
11195 | unsigned int c; | |
11196 | Elf32_gptab *tab; | |
11197 | Elf32_External_gptab *ext_tab; | |
11198 | unsigned int j; | |
11199 | ||
11200 | /* The .gptab.sdata and .gptab.sbss sections hold | |
11201 | information describing how the small data area would | |
11202 | change depending upon the -G switch. These sections | |
11203 | not used in executables files. */ | |
1049f94e | 11204 | if (! info->relocatable) |
b49e97c9 | 11205 | { |
8423293d | 11206 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11207 | { |
11208 | asection *input_section; | |
11209 | ||
11210 | if (p->type != bfd_indirect_link_order) | |
11211 | { | |
11212 | if (p->type == bfd_data_link_order) | |
11213 | continue; | |
11214 | abort (); | |
11215 | } | |
11216 | ||
11217 | input_section = p->u.indirect.section; | |
11218 | ||
11219 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11220 | elf_link_input_bfd ignores this section. */ | |
11221 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11222 | } | |
11223 | ||
11224 | /* Skip this section later on (I don't think this | |
11225 | currently matters, but someday it might). */ | |
8423293d | 11226 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11227 | |
11228 | /* Really remove the section. */ | |
5daa8fe7 | 11229 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
11230 | --abfd->section_count; |
11231 | ||
11232 | continue; | |
11233 | } | |
11234 | ||
11235 | /* There is one gptab for initialized data, and one for | |
11236 | uninitialized data. */ | |
11237 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
11238 | gptab_data_sec = o; | |
11239 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
11240 | gptab_bss_sec = o; | |
11241 | else | |
11242 | { | |
11243 | (*_bfd_error_handler) | |
11244 | (_("%s: illegal section name `%s'"), | |
11245 | bfd_get_filename (abfd), o->name); | |
11246 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 11247 | return FALSE; |
b49e97c9 TS |
11248 | } |
11249 | ||
11250 | /* The linker script always combines .gptab.data and | |
11251 | .gptab.sdata into .gptab.sdata, and likewise for | |
11252 | .gptab.bss and .gptab.sbss. It is possible that there is | |
11253 | no .sdata or .sbss section in the output file, in which | |
11254 | case we must change the name of the output section. */ | |
11255 | subname = o->name + sizeof ".gptab" - 1; | |
11256 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
11257 | { | |
11258 | if (o == gptab_data_sec) | |
11259 | o->name = ".gptab.data"; | |
11260 | else | |
11261 | o->name = ".gptab.bss"; | |
11262 | subname = o->name + sizeof ".gptab" - 1; | |
11263 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
11264 | } | |
11265 | ||
11266 | /* Set up the first entry. */ | |
11267 | c = 1; | |
11268 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 11269 | tab = bfd_malloc (amt); |
b49e97c9 | 11270 | if (tab == NULL) |
b34976b6 | 11271 | return FALSE; |
b49e97c9 TS |
11272 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
11273 | tab[0].gt_header.gt_unused = 0; | |
11274 | ||
11275 | /* Combine the input sections. */ | |
8423293d | 11276 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
11277 | { |
11278 | asection *input_section; | |
11279 | bfd *input_bfd; | |
11280 | bfd_size_type size; | |
11281 | unsigned long last; | |
11282 | bfd_size_type gpentry; | |
11283 | ||
11284 | if (p->type != bfd_indirect_link_order) | |
11285 | { | |
11286 | if (p->type == bfd_data_link_order) | |
11287 | continue; | |
11288 | abort (); | |
11289 | } | |
11290 | ||
11291 | input_section = p->u.indirect.section; | |
11292 | input_bfd = input_section->owner; | |
11293 | ||
11294 | /* Combine the gptab entries for this input section one | |
11295 | by one. We know that the input gptab entries are | |
11296 | sorted by ascending -G value. */ | |
eea6121a | 11297 | size = input_section->size; |
b49e97c9 TS |
11298 | last = 0; |
11299 | for (gpentry = sizeof (Elf32_External_gptab); | |
11300 | gpentry < size; | |
11301 | gpentry += sizeof (Elf32_External_gptab)) | |
11302 | { | |
11303 | Elf32_External_gptab ext_gptab; | |
11304 | Elf32_gptab int_gptab; | |
11305 | unsigned long val; | |
11306 | unsigned long add; | |
b34976b6 | 11307 | bfd_boolean exact; |
b49e97c9 TS |
11308 | unsigned int look; |
11309 | ||
11310 | if (! (bfd_get_section_contents | |
9719ad41 RS |
11311 | (input_bfd, input_section, &ext_gptab, gpentry, |
11312 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
11313 | { |
11314 | free (tab); | |
b34976b6 | 11315 | return FALSE; |
b49e97c9 TS |
11316 | } |
11317 | ||
11318 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
11319 | &int_gptab); | |
11320 | val = int_gptab.gt_entry.gt_g_value; | |
11321 | add = int_gptab.gt_entry.gt_bytes - last; | |
11322 | ||
b34976b6 | 11323 | exact = FALSE; |
b49e97c9 TS |
11324 | for (look = 1; look < c; look++) |
11325 | { | |
11326 | if (tab[look].gt_entry.gt_g_value >= val) | |
11327 | tab[look].gt_entry.gt_bytes += add; | |
11328 | ||
11329 | if (tab[look].gt_entry.gt_g_value == val) | |
b34976b6 | 11330 | exact = TRUE; |
b49e97c9 TS |
11331 | } |
11332 | ||
11333 | if (! exact) | |
11334 | { | |
11335 | Elf32_gptab *new_tab; | |
11336 | unsigned int max; | |
11337 | ||
11338 | /* We need a new table entry. */ | |
11339 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 11340 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
11341 | if (new_tab == NULL) |
11342 | { | |
11343 | free (tab); | |
b34976b6 | 11344 | return FALSE; |
b49e97c9 TS |
11345 | } |
11346 | tab = new_tab; | |
11347 | tab[c].gt_entry.gt_g_value = val; | |
11348 | tab[c].gt_entry.gt_bytes = add; | |
11349 | ||
11350 | /* Merge in the size for the next smallest -G | |
11351 | value, since that will be implied by this new | |
11352 | value. */ | |
11353 | max = 0; | |
11354 | for (look = 1; look < c; look++) | |
11355 | { | |
11356 | if (tab[look].gt_entry.gt_g_value < val | |
11357 | && (max == 0 | |
11358 | || (tab[look].gt_entry.gt_g_value | |
11359 | > tab[max].gt_entry.gt_g_value))) | |
11360 | max = look; | |
11361 | } | |
11362 | if (max != 0) | |
11363 | tab[c].gt_entry.gt_bytes += | |
11364 | tab[max].gt_entry.gt_bytes; | |
11365 | ||
11366 | ++c; | |
11367 | } | |
11368 | ||
11369 | last = int_gptab.gt_entry.gt_bytes; | |
11370 | } | |
11371 | ||
11372 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
11373 | elf_link_input_bfd ignores this section. */ | |
11374 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
11375 | } | |
11376 | ||
11377 | /* The table must be sorted by -G value. */ | |
11378 | if (c > 2) | |
11379 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
11380 | ||
11381 | /* Swap out the table. */ | |
11382 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 11383 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
11384 | if (ext_tab == NULL) |
11385 | { | |
11386 | free (tab); | |
b34976b6 | 11387 | return FALSE; |
b49e97c9 TS |
11388 | } |
11389 | ||
11390 | for (j = 0; j < c; j++) | |
11391 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
11392 | free (tab); | |
11393 | ||
eea6121a | 11394 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
11395 | o->contents = (bfd_byte *) ext_tab; |
11396 | ||
11397 | /* Skip this section later on (I don't think this currently | |
11398 | matters, but someday it might). */ | |
8423293d | 11399 | o->map_head.link_order = NULL; |
b49e97c9 TS |
11400 | } |
11401 | } | |
11402 | ||
11403 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 11404 | if (!bfd_elf_final_link (abfd, info)) |
b34976b6 | 11405 | return FALSE; |
b49e97c9 TS |
11406 | |
11407 | /* Now write out the computed sections. */ | |
11408 | ||
9719ad41 | 11409 | if (reginfo_sec != NULL) |
b49e97c9 TS |
11410 | { |
11411 | Elf32_External_RegInfo ext; | |
11412 | ||
11413 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 11414 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
b34976b6 | 11415 | return FALSE; |
b49e97c9 TS |
11416 | } |
11417 | ||
9719ad41 | 11418 | if (mdebug_sec != NULL) |
b49e97c9 TS |
11419 | { |
11420 | BFD_ASSERT (abfd->output_has_begun); | |
11421 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
11422 | swap, info, | |
11423 | mdebug_sec->filepos)) | |
b34976b6 | 11424 | return FALSE; |
b49e97c9 TS |
11425 | |
11426 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
11427 | } | |
11428 | ||
9719ad41 | 11429 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
11430 | { |
11431 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
11432 | gptab_data_sec->contents, | |
eea6121a | 11433 | 0, gptab_data_sec->size)) |
b34976b6 | 11434 | return FALSE; |
b49e97c9 TS |
11435 | } |
11436 | ||
9719ad41 | 11437 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
11438 | { |
11439 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
11440 | gptab_bss_sec->contents, | |
eea6121a | 11441 | 0, gptab_bss_sec->size)) |
b34976b6 | 11442 | return FALSE; |
b49e97c9 TS |
11443 | } |
11444 | ||
11445 | if (SGI_COMPAT (abfd)) | |
11446 | { | |
11447 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
11448 | if (rtproc_sec != NULL) | |
11449 | { | |
11450 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
11451 | rtproc_sec->contents, | |
eea6121a | 11452 | 0, rtproc_sec->size)) |
b34976b6 | 11453 | return FALSE; |
b49e97c9 TS |
11454 | } |
11455 | } | |
11456 | ||
b34976b6 | 11457 | return TRUE; |
b49e97c9 TS |
11458 | } |
11459 | \f | |
64543e1a RS |
11460 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
11461 | ||
11462 | struct mips_mach_extension { | |
11463 | unsigned long extension, base; | |
11464 | }; | |
11465 | ||
11466 | ||
11467 | /* An array describing how BFD machines relate to one another. The entries | |
11468 | are ordered topologically with MIPS I extensions listed last. */ | |
11469 | ||
11470 | static const struct mips_mach_extension mips_mach_extensions[] = { | |
6f179bd0 AN |
11471 | /* MIPS64r2 extensions. */ |
11472 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
11473 | ||
64543e1a | 11474 | /* MIPS64 extensions. */ |
5f74bc13 | 11475 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, |
64543e1a RS |
11476 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, |
11477 | ||
11478 | /* MIPS V extensions. */ | |
11479 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
11480 | ||
11481 | /* R10000 extensions. */ | |
11482 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
11483 | ||
11484 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
11485 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
11486 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
11487 | many libraries will just use the core ISA. Perhaps we could add | |
11488 | some sort of ASE flag if this ever proves a problem. */ | |
11489 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
11490 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
11491 | ||
11492 | /* MIPS IV extensions. */ | |
11493 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
11494 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
11495 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
5a7ea749 | 11496 | { bfd_mach_mips7000, bfd_mach_mips8000 }, |
0d2e43ed | 11497 | { bfd_mach_mips9000, bfd_mach_mips8000 }, |
64543e1a RS |
11498 | |
11499 | /* VR4100 extensions. */ | |
11500 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
11501 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
11502 | ||
11503 | /* MIPS III extensions. */ | |
350cc38d MS |
11504 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, |
11505 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
64543e1a RS |
11506 | { bfd_mach_mips8000, bfd_mach_mips4000 }, |
11507 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
11508 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
11509 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
11510 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
11511 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
11512 | { bfd_mach_mips4010, bfd_mach_mips4000 }, | |
11513 | ||
11514 | /* MIPS32 extensions. */ | |
11515 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
11516 | ||
11517 | /* MIPS II extensions. */ | |
11518 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
11519 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
11520 | ||
11521 | /* MIPS I extensions. */ | |
11522 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
11523 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
11524 | }; | |
11525 | ||
11526 | ||
11527 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
11528 | ||
11529 | static bfd_boolean | |
9719ad41 | 11530 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
64543e1a RS |
11531 | { |
11532 | size_t i; | |
11533 | ||
c5211a54 RS |
11534 | if (extension == base) |
11535 | return TRUE; | |
11536 | ||
11537 | if (base == bfd_mach_mipsisa32 | |
11538 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
11539 | return TRUE; | |
11540 | ||
11541 | if (base == bfd_mach_mipsisa32r2 | |
11542 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
11543 | return TRUE; | |
11544 | ||
11545 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
64543e1a | 11546 | if (extension == mips_mach_extensions[i].extension) |
c5211a54 RS |
11547 | { |
11548 | extension = mips_mach_extensions[i].base; | |
11549 | if (extension == base) | |
11550 | return TRUE; | |
11551 | } | |
64543e1a | 11552 | |
c5211a54 | 11553 | return FALSE; |
64543e1a RS |
11554 | } |
11555 | ||
11556 | ||
11557 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
00707a0e | 11558 | |
b34976b6 | 11559 | static bfd_boolean |
9719ad41 | 11560 | mips_32bit_flags_p (flagword flags) |
00707a0e | 11561 | { |
64543e1a RS |
11562 | return ((flags & EF_MIPS_32BITMODE) != 0 |
11563 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
11564 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
11565 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
11566 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
11567 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
11568 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2); | |
00707a0e RS |
11569 | } |
11570 | ||
64543e1a | 11571 | |
2cf19d5c JM |
11572 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
11573 | there are conflicting attributes. */ | |
11574 | static bfd_boolean | |
11575 | mips_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
11576 | { | |
11577 | obj_attribute *in_attr; | |
11578 | obj_attribute *out_attr; | |
11579 | ||
11580 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
11581 | { | |
11582 | /* This is the first object. Copy the attributes. */ | |
11583 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
11584 | ||
11585 | /* Use the Tag_null value to indicate the attributes have been | |
11586 | initialized. */ | |
11587 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
11588 | ||
11589 | return TRUE; | |
11590 | } | |
11591 | ||
11592 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
11593 | non-conflicting ones. */ | |
11594 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
11595 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
11596 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11597 | { | |
11598 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
11599 | if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
11600 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
11601 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i == 0) | |
11602 | ; | |
42554f6a | 11603 | else if (in_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
11604 | _bfd_error_handler |
11605 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
11606 | in_attr[Tag_GNU_MIPS_ABI_FP].i); | |
42554f6a | 11607 | else if (out_attr[Tag_GNU_MIPS_ABI_FP].i > 4) |
2cf19d5c JM |
11608 | _bfd_error_handler |
11609 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
11610 | out_attr[Tag_GNU_MIPS_ABI_FP].i); | |
11611 | else | |
11612 | switch (out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11613 | { | |
11614 | case 1: | |
11615 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11616 | { | |
11617 | case 2: | |
11618 | _bfd_error_handler | |
11619 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
11620 | obfd, ibfd); | |
51a0dd31 | 11621 | break; |
2cf19d5c JM |
11622 | |
11623 | case 3: | |
11624 | _bfd_error_handler | |
11625 | (_("Warning: %B uses hard float, %B uses soft float"), | |
11626 | obfd, ibfd); | |
11627 | break; | |
11628 | ||
42554f6a TS |
11629 | case 4: |
11630 | _bfd_error_handler | |
11631 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
11632 | obfd, ibfd); | |
11633 | break; | |
11634 | ||
2cf19d5c JM |
11635 | default: |
11636 | abort (); | |
11637 | } | |
11638 | break; | |
11639 | ||
11640 | case 2: | |
11641 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11642 | { | |
11643 | case 1: | |
11644 | _bfd_error_handler | |
11645 | (_("Warning: %B uses -msingle-float, %B uses -mdouble-float"), | |
11646 | ibfd, obfd); | |
51a0dd31 | 11647 | break; |
2cf19d5c JM |
11648 | |
11649 | case 3: | |
11650 | _bfd_error_handler | |
11651 | (_("Warning: %B uses hard float, %B uses soft float"), | |
11652 | obfd, ibfd); | |
11653 | break; | |
11654 | ||
42554f6a TS |
11655 | case 4: |
11656 | _bfd_error_handler | |
11657 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
11658 | obfd, ibfd); | |
11659 | break; | |
11660 | ||
2cf19d5c JM |
11661 | default: |
11662 | abort (); | |
11663 | } | |
11664 | break; | |
11665 | ||
11666 | case 3: | |
11667 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11668 | { | |
11669 | case 1: | |
11670 | case 2: | |
42554f6a | 11671 | case 4: |
2cf19d5c JM |
11672 | _bfd_error_handler |
11673 | (_("Warning: %B uses hard float, %B uses soft float"), | |
11674 | ibfd, obfd); | |
11675 | break; | |
11676 | ||
11677 | default: | |
11678 | abort (); | |
11679 | } | |
11680 | break; | |
11681 | ||
42554f6a TS |
11682 | case 4: |
11683 | switch (in_attr[Tag_GNU_MIPS_ABI_FP].i) | |
11684 | { | |
11685 | case 1: | |
11686 | _bfd_error_handler | |
11687 | (_("Warning: %B uses -msingle-float, %B uses -mips32r2 -mfp64"), | |
11688 | ibfd, obfd); | |
11689 | break; | |
11690 | ||
11691 | case 2: | |
11692 | _bfd_error_handler | |
11693 | (_("Warning: %B uses -mdouble-float, %B uses -mips32r2 -mfp64"), | |
11694 | ibfd, obfd); | |
11695 | break; | |
11696 | ||
11697 | case 3: | |
11698 | _bfd_error_handler | |
11699 | (_("Warning: %B uses hard float, %B uses soft float"), | |
11700 | obfd, ibfd); | |
11701 | break; | |
11702 | ||
11703 | default: | |
11704 | abort (); | |
11705 | } | |
11706 | break; | |
11707 | ||
2cf19d5c JM |
11708 | default: |
11709 | abort (); | |
11710 | } | |
11711 | } | |
11712 | ||
11713 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
11714 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
11715 | ||
11716 | return TRUE; | |
11717 | } | |
11718 | ||
b49e97c9 TS |
11719 | /* Merge backend specific data from an object file to the output |
11720 | object file when linking. */ | |
11721 | ||
b34976b6 | 11722 | bfd_boolean |
9719ad41 | 11723 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
b49e97c9 TS |
11724 | { |
11725 | flagword old_flags; | |
11726 | flagword new_flags; | |
b34976b6 AM |
11727 | bfd_boolean ok; |
11728 | bfd_boolean null_input_bfd = TRUE; | |
b49e97c9 TS |
11729 | asection *sec; |
11730 | ||
11731 | /* Check if we have the same endianess */ | |
82e51918 | 11732 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
aa701218 AO |
11733 | { |
11734 | (*_bfd_error_handler) | |
d003868e AM |
11735 | (_("%B: endianness incompatible with that of the selected emulation"), |
11736 | ibfd); | |
aa701218 AO |
11737 | return FALSE; |
11738 | } | |
b49e97c9 TS |
11739 | |
11740 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
11741 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 11742 | return TRUE; |
b49e97c9 | 11743 | |
aa701218 AO |
11744 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
11745 | { | |
11746 | (*_bfd_error_handler) | |
d003868e AM |
11747 | (_("%B: ABI is incompatible with that of the selected emulation"), |
11748 | ibfd); | |
aa701218 AO |
11749 | return FALSE; |
11750 | } | |
11751 | ||
2cf19d5c JM |
11752 | if (!mips_elf_merge_obj_attributes (ibfd, obfd)) |
11753 | return FALSE; | |
11754 | ||
b49e97c9 TS |
11755 | new_flags = elf_elfheader (ibfd)->e_flags; |
11756 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
11757 | old_flags = elf_elfheader (obfd)->e_flags; | |
11758 | ||
11759 | if (! elf_flags_init (obfd)) | |
11760 | { | |
b34976b6 | 11761 | elf_flags_init (obfd) = TRUE; |
b49e97c9 TS |
11762 | elf_elfheader (obfd)->e_flags = new_flags; |
11763 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
11764 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
11765 | ||
11766 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 TS |
11767 | && (bfd_get_arch_info (obfd)->the_default |
11768 | || mips_mach_extends_p (bfd_get_mach (obfd), | |
11769 | bfd_get_mach (ibfd)))) | |
b49e97c9 TS |
11770 | { |
11771 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
11772 | bfd_get_mach (ibfd))) | |
b34976b6 | 11773 | return FALSE; |
b49e97c9 TS |
11774 | } |
11775 | ||
b34976b6 | 11776 | return TRUE; |
b49e97c9 TS |
11777 | } |
11778 | ||
11779 | /* Check flag compatibility. */ | |
11780 | ||
11781 | new_flags &= ~EF_MIPS_NOREORDER; | |
11782 | old_flags &= ~EF_MIPS_NOREORDER; | |
11783 | ||
f4416af6 AO |
11784 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It |
11785 | doesn't seem to matter. */ | |
11786 | new_flags &= ~EF_MIPS_XGOT; | |
11787 | old_flags &= ~EF_MIPS_XGOT; | |
11788 | ||
98a8deaf RS |
11789 | /* MIPSpro generates ucode info in n64 objects. Again, we should |
11790 | just be able to ignore this. */ | |
11791 | new_flags &= ~EF_MIPS_UCODE; | |
11792 | old_flags &= ~EF_MIPS_UCODE; | |
11793 | ||
0a44bf69 RS |
11794 | /* Don't care about the PIC flags from dynamic objects; they are |
11795 | PIC by design. */ | |
11796 | if ((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0 | |
11797 | && (ibfd->flags & DYNAMIC) != 0) | |
11798 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
11799 | ||
b49e97c9 | 11800 | if (new_flags == old_flags) |
b34976b6 | 11801 | return TRUE; |
b49e97c9 TS |
11802 | |
11803 | /* Check to see if the input BFD actually contains any sections. | |
11804 | If not, its flags may not have been initialised either, but it cannot | |
11805 | actually cause any incompatibility. */ | |
11806 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
11807 | { | |
11808 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
11809 | which are automatically generated by gas. */ | |
11810 | if (strcmp (sec->name, ".reginfo") | |
11811 | && strcmp (sec->name, ".mdebug") | |
eea6121a | 11812 | && (sec->size != 0 |
d13d89fa NS |
11813 | || (strcmp (sec->name, ".text") |
11814 | && strcmp (sec->name, ".data") | |
11815 | && strcmp (sec->name, ".bss")))) | |
b49e97c9 | 11816 | { |
b34976b6 | 11817 | null_input_bfd = FALSE; |
b49e97c9 TS |
11818 | break; |
11819 | } | |
11820 | } | |
11821 | if (null_input_bfd) | |
b34976b6 | 11822 | return TRUE; |
b49e97c9 | 11823 | |
b34976b6 | 11824 | ok = TRUE; |
b49e97c9 | 11825 | |
143d77c5 EC |
11826 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) |
11827 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
b49e97c9 | 11828 | { |
b49e97c9 | 11829 | (*_bfd_error_handler) |
d003868e AM |
11830 | (_("%B: warning: linking PIC files with non-PIC files"), |
11831 | ibfd); | |
143d77c5 | 11832 | ok = TRUE; |
b49e97c9 TS |
11833 | } |
11834 | ||
143d77c5 EC |
11835 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) |
11836 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
11837 | if (! (new_flags & EF_MIPS_PIC)) | |
11838 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
11839 | ||
11840 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
11841 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
b49e97c9 | 11842 | |
64543e1a RS |
11843 | /* Compare the ISAs. */ |
11844 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
b49e97c9 | 11845 | { |
64543e1a | 11846 | (*_bfd_error_handler) |
d003868e AM |
11847 | (_("%B: linking 32-bit code with 64-bit code"), |
11848 | ibfd); | |
64543e1a RS |
11849 | ok = FALSE; |
11850 | } | |
11851 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
11852 | { | |
11853 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
11854 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
b49e97c9 | 11855 | { |
64543e1a RS |
11856 | /* Copy the architecture info from IBFD to OBFD. Also copy |
11857 | the 32-bit flag (if set) so that we continue to recognise | |
11858 | OBFD as a 32-bit binary. */ | |
11859 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
11860 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
11861 | elf_elfheader (obfd)->e_flags | |
11862 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
11863 | ||
11864 | /* Copy across the ABI flags if OBFD doesn't use them | |
11865 | and if that was what caused us to treat IBFD as 32-bit. */ | |
11866 | if ((old_flags & EF_MIPS_ABI) == 0 | |
11867 | && mips_32bit_flags_p (new_flags) | |
11868 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
11869 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
b49e97c9 TS |
11870 | } |
11871 | else | |
11872 | { | |
64543e1a | 11873 | /* The ISAs aren't compatible. */ |
b49e97c9 | 11874 | (*_bfd_error_handler) |
d003868e AM |
11875 | (_("%B: linking %s module with previous %s modules"), |
11876 | ibfd, | |
64543e1a RS |
11877 | bfd_printable_name (ibfd), |
11878 | bfd_printable_name (obfd)); | |
b34976b6 | 11879 | ok = FALSE; |
b49e97c9 | 11880 | } |
b49e97c9 TS |
11881 | } |
11882 | ||
64543e1a RS |
11883 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); |
11884 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
11885 | ||
11886 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
b49e97c9 TS |
11887 | does set EI_CLASS differently from any 32-bit ABI. */ |
11888 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
11889 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
11890 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
11891 | { | |
11892 | /* Only error if both are set (to different values). */ | |
11893 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
11894 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
11895 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
11896 | { | |
11897 | (*_bfd_error_handler) | |
d003868e AM |
11898 | (_("%B: ABI mismatch: linking %s module with previous %s modules"), |
11899 | ibfd, | |
b49e97c9 TS |
11900 | elf_mips_abi_name (ibfd), |
11901 | elf_mips_abi_name (obfd)); | |
b34976b6 | 11902 | ok = FALSE; |
b49e97c9 TS |
11903 | } |
11904 | new_flags &= ~EF_MIPS_ABI; | |
11905 | old_flags &= ~EF_MIPS_ABI; | |
11906 | } | |
11907 | ||
fb39dac1 RS |
11908 | /* For now, allow arbitrary mixing of ASEs (retain the union). */ |
11909 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
11910 | { | |
11911 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
11912 | ||
11913 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
11914 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
11915 | } | |
11916 | ||
b49e97c9 TS |
11917 | /* Warn about any other mismatches */ |
11918 | if (new_flags != old_flags) | |
11919 | { | |
11920 | (*_bfd_error_handler) | |
d003868e AM |
11921 | (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
11922 | ibfd, (unsigned long) new_flags, | |
b49e97c9 | 11923 | (unsigned long) old_flags); |
b34976b6 | 11924 | ok = FALSE; |
b49e97c9 TS |
11925 | } |
11926 | ||
11927 | if (! ok) | |
11928 | { | |
11929 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11930 | return FALSE; |
b49e97c9 TS |
11931 | } |
11932 | ||
b34976b6 | 11933 | return TRUE; |
b49e97c9 TS |
11934 | } |
11935 | ||
11936 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
11937 | ||
b34976b6 | 11938 | bfd_boolean |
9719ad41 | 11939 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
11940 | { |
11941 | BFD_ASSERT (!elf_flags_init (abfd) | |
11942 | || elf_elfheader (abfd)->e_flags == flags); | |
11943 | ||
11944 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
11945 | elf_flags_init (abfd) = TRUE; |
11946 | return TRUE; | |
b49e97c9 TS |
11947 | } |
11948 | ||
ad9563d6 CM |
11949 | char * |
11950 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
11951 | { | |
11952 | switch (dtag) | |
11953 | { | |
11954 | default: return ""; | |
11955 | case DT_MIPS_RLD_VERSION: | |
11956 | return "MIPS_RLD_VERSION"; | |
11957 | case DT_MIPS_TIME_STAMP: | |
11958 | return "MIPS_TIME_STAMP"; | |
11959 | case DT_MIPS_ICHECKSUM: | |
11960 | return "MIPS_ICHECKSUM"; | |
11961 | case DT_MIPS_IVERSION: | |
11962 | return "MIPS_IVERSION"; | |
11963 | case DT_MIPS_FLAGS: | |
11964 | return "MIPS_FLAGS"; | |
11965 | case DT_MIPS_BASE_ADDRESS: | |
11966 | return "MIPS_BASE_ADDRESS"; | |
11967 | case DT_MIPS_MSYM: | |
11968 | return "MIPS_MSYM"; | |
11969 | case DT_MIPS_CONFLICT: | |
11970 | return "MIPS_CONFLICT"; | |
11971 | case DT_MIPS_LIBLIST: | |
11972 | return "MIPS_LIBLIST"; | |
11973 | case DT_MIPS_LOCAL_GOTNO: | |
11974 | return "MIPS_LOCAL_GOTNO"; | |
11975 | case DT_MIPS_CONFLICTNO: | |
11976 | return "MIPS_CONFLICTNO"; | |
11977 | case DT_MIPS_LIBLISTNO: | |
11978 | return "MIPS_LIBLISTNO"; | |
11979 | case DT_MIPS_SYMTABNO: | |
11980 | return "MIPS_SYMTABNO"; | |
11981 | case DT_MIPS_UNREFEXTNO: | |
11982 | return "MIPS_UNREFEXTNO"; | |
11983 | case DT_MIPS_GOTSYM: | |
11984 | return "MIPS_GOTSYM"; | |
11985 | case DT_MIPS_HIPAGENO: | |
11986 | return "MIPS_HIPAGENO"; | |
11987 | case DT_MIPS_RLD_MAP: | |
11988 | return "MIPS_RLD_MAP"; | |
11989 | case DT_MIPS_DELTA_CLASS: | |
11990 | return "MIPS_DELTA_CLASS"; | |
11991 | case DT_MIPS_DELTA_CLASS_NO: | |
11992 | return "MIPS_DELTA_CLASS_NO"; | |
11993 | case DT_MIPS_DELTA_INSTANCE: | |
11994 | return "MIPS_DELTA_INSTANCE"; | |
11995 | case DT_MIPS_DELTA_INSTANCE_NO: | |
11996 | return "MIPS_DELTA_INSTANCE_NO"; | |
11997 | case DT_MIPS_DELTA_RELOC: | |
11998 | return "MIPS_DELTA_RELOC"; | |
11999 | case DT_MIPS_DELTA_RELOC_NO: | |
12000 | return "MIPS_DELTA_RELOC_NO"; | |
12001 | case DT_MIPS_DELTA_SYM: | |
12002 | return "MIPS_DELTA_SYM"; | |
12003 | case DT_MIPS_DELTA_SYM_NO: | |
12004 | return "MIPS_DELTA_SYM_NO"; | |
12005 | case DT_MIPS_DELTA_CLASSSYM: | |
12006 | return "MIPS_DELTA_CLASSSYM"; | |
12007 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
12008 | return "MIPS_DELTA_CLASSSYM_NO"; | |
12009 | case DT_MIPS_CXX_FLAGS: | |
12010 | return "MIPS_CXX_FLAGS"; | |
12011 | case DT_MIPS_PIXIE_INIT: | |
12012 | return "MIPS_PIXIE_INIT"; | |
12013 | case DT_MIPS_SYMBOL_LIB: | |
12014 | return "MIPS_SYMBOL_LIB"; | |
12015 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
12016 | return "MIPS_LOCALPAGE_GOTIDX"; | |
12017 | case DT_MIPS_LOCAL_GOTIDX: | |
12018 | return "MIPS_LOCAL_GOTIDX"; | |
12019 | case DT_MIPS_HIDDEN_GOTIDX: | |
12020 | return "MIPS_HIDDEN_GOTIDX"; | |
12021 | case DT_MIPS_PROTECTED_GOTIDX: | |
12022 | return "MIPS_PROTECTED_GOT_IDX"; | |
12023 | case DT_MIPS_OPTIONS: | |
12024 | return "MIPS_OPTIONS"; | |
12025 | case DT_MIPS_INTERFACE: | |
12026 | return "MIPS_INTERFACE"; | |
12027 | case DT_MIPS_DYNSTR_ALIGN: | |
12028 | return "DT_MIPS_DYNSTR_ALIGN"; | |
12029 | case DT_MIPS_INTERFACE_SIZE: | |
12030 | return "DT_MIPS_INTERFACE_SIZE"; | |
12031 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
12032 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
12033 | case DT_MIPS_PERF_SUFFIX: | |
12034 | return "DT_MIPS_PERF_SUFFIX"; | |
12035 | case DT_MIPS_COMPACT_SIZE: | |
12036 | return "DT_MIPS_COMPACT_SIZE"; | |
12037 | case DT_MIPS_GP_VALUE: | |
12038 | return "DT_MIPS_GP_VALUE"; | |
12039 | case DT_MIPS_AUX_DYNAMIC: | |
12040 | return "DT_MIPS_AUX_DYNAMIC"; | |
12041 | } | |
12042 | } | |
12043 | ||
b34976b6 | 12044 | bfd_boolean |
9719ad41 | 12045 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 12046 | { |
9719ad41 | 12047 | FILE *file = ptr; |
b49e97c9 TS |
12048 | |
12049 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
12050 | ||
12051 | /* Print normal ELF private data. */ | |
12052 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
12053 | ||
12054 | /* xgettext:c-format */ | |
12055 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
12056 | ||
12057 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
12058 | fprintf (file, _(" [abi=O32]")); | |
12059 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
12060 | fprintf (file, _(" [abi=O64]")); | |
12061 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
12062 | fprintf (file, _(" [abi=EABI32]")); | |
12063 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
12064 | fprintf (file, _(" [abi=EABI64]")); | |
12065 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
12066 | fprintf (file, _(" [abi unknown]")); | |
12067 | else if (ABI_N32_P (abfd)) | |
12068 | fprintf (file, _(" [abi=N32]")); | |
12069 | else if (ABI_64_P (abfd)) | |
12070 | fprintf (file, _(" [abi=64]")); | |
12071 | else | |
12072 | fprintf (file, _(" [no abi set]")); | |
12073 | ||
12074 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 12075 | fprintf (file, " [mips1]"); |
b49e97c9 | 12076 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 12077 | fprintf (file, " [mips2]"); |
b49e97c9 | 12078 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 12079 | fprintf (file, " [mips3]"); |
b49e97c9 | 12080 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 12081 | fprintf (file, " [mips4]"); |
b49e97c9 | 12082 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 12083 | fprintf (file, " [mips5]"); |
b49e97c9 | 12084 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 12085 | fprintf (file, " [mips32]"); |
b49e97c9 | 12086 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 12087 | fprintf (file, " [mips64]"); |
af7ee8bf | 12088 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 12089 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 12090 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 12091 | fprintf (file, " [mips64r2]"); |
b49e97c9 TS |
12092 | else |
12093 | fprintf (file, _(" [unknown ISA]")); | |
12094 | ||
40d32fc6 | 12095 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 12096 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
12097 | |
12098 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 12099 | fprintf (file, " [mips16]"); |
40d32fc6 | 12100 | |
b49e97c9 | 12101 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 12102 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
12103 | else |
12104 | fprintf (file, _(" [not 32bitmode]")); | |
12105 | ||
c0e3f241 | 12106 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 12107 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
12108 | |
12109 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 12110 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
12111 | |
12112 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 12113 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
12114 | |
12115 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 12116 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
12117 | |
12118 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 12119 | fprintf (file, " [UCODE]"); |
c0e3f241 | 12120 | |
b49e97c9 TS |
12121 | fputc ('\n', file); |
12122 | ||
b34976b6 | 12123 | return TRUE; |
b49e97c9 | 12124 | } |
2f89ff8d | 12125 | |
b35d266b | 12126 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 12127 | { |
0112cd26 NC |
12128 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
12129 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12130 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, | |
12131 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12132 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
12133 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
12134 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 12135 | }; |
5e2b0d47 | 12136 | |
8992f0d7 TS |
12137 | /* Merge non visibility st_other attributes. Ensure that the |
12138 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
12139 | definiton of the symbol. */ | |
5e2b0d47 NC |
12140 | void |
12141 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
12142 | const Elf_Internal_Sym *isym, | |
12143 | bfd_boolean definition, | |
12144 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
12145 | { | |
8992f0d7 TS |
12146 | if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
12147 | { | |
12148 | unsigned char other; | |
12149 | ||
12150 | other = (definition ? isym->st_other : h->other); | |
12151 | other &= ~ELF_ST_VISIBILITY (-1); | |
12152 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
12153 | } | |
12154 | ||
12155 | if (!definition | |
5e2b0d47 NC |
12156 | && ELF_MIPS_IS_OPTIONAL (isym->st_other)) |
12157 | h->other |= STO_OPTIONAL; | |
12158 | } | |
12ac1cf5 NC |
12159 | |
12160 | /* Decide whether an undefined symbol is special and can be ignored. | |
12161 | This is the case for OPTIONAL symbols on IRIX. */ | |
12162 | bfd_boolean | |
12163 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) | |
12164 | { | |
12165 | return ELF_MIPS_IS_OPTIONAL (h->other) ? TRUE : FALSE; | |
12166 | } | |
e0764319 NC |
12167 | |
12168 | bfd_boolean | |
12169 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) | |
12170 | { | |
12171 | return (sym->st_shndx == SHN_COMMON | |
12172 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
12173 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
12174 | } |