1 /* MIPS-specific support for ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003 Free Software Foundation, Inc.
5 Most of the information added by Ian Lance Taylor, Cygnus Support,
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>
12 This file is part of BFD, the Binary File Descriptor library.
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
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
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.
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
26 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 /* This file handles functionality common to the different MIPS ABI's. */
33 #include "libiberty.h"
35 #include "elfxx-mips.h"
38 /* Get the ECOFF swapping routines. */
40 #include "coff/symconst.h"
41 #include "coff/ecoff.h"
42 #include "coff/mips.h"
46 /* This structure is used to hold .got entries while estimating got
50 /* The input bfd in which the symbol is defined. */
52 /* The index of the symbol, as stored in the relocation r_info. If
53 it's -1, the addend is a complete address into the
54 executable/shared library. */
56 /* The addend of the relocation that should be added to the symbol
59 /* The offset from the beginning of the .got section to the entry
60 corresponding to this symbol+addend. */
64 /* This structure is used to hold .got information when linking. It
65 is stored in the tdata field of the bfd_elf_section_data structure. */
69 /* The global symbol in the GOT with the lowest index in the dynamic
71 struct elf_link_hash_entry *global_gotsym;
72 /* The number of global .got entries. */
73 unsigned int global_gotno;
74 /* The number of local .got entries. */
75 unsigned int local_gotno;
76 /* The number of local .got entries we have used. */
77 unsigned int assigned_gotno;
78 /* A hash table holding members of the got. */
79 struct htab *got_entries;
82 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
83 the dynamic symbols. */
85 struct mips_elf_hash_sort_data
87 /* The symbol in the global GOT with the lowest dynamic symbol table
89 struct elf_link_hash_entry *low;
90 /* The least dynamic symbol table index corresponding to a symbol
93 /* The greatest dynamic symbol table index not corresponding to a
94 symbol without a GOT entry. */
95 long max_non_got_dynindx;
98 /* The MIPS ELF linker needs additional information for each symbol in
99 the global hash table. */
101 struct mips_elf_link_hash_entry
103 struct elf_link_hash_entry root;
105 /* External symbol information. */
108 /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
110 unsigned int possibly_dynamic_relocs;
112 /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against
113 a readonly section. */
114 bfd_boolean readonly_reloc;
116 /* The index of the first dynamic relocation (in the .rel.dyn
117 section) against this symbol. */
118 unsigned int min_dyn_reloc_index;
120 /* We must not create a stub for a symbol that has relocations
121 related to taking the function's address, i.e. any but
122 R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition",
124 bfd_boolean no_fn_stub;
126 /* If there is a stub that 32 bit functions should use to call this
127 16 bit function, this points to the section containing the stub. */
130 /* Whether we need the fn_stub; this is set if this symbol appears
131 in any relocs other than a 16 bit call. */
132 bfd_boolean need_fn_stub;
134 /* If there is a stub that 16 bit functions should use to call this
135 32 bit function, this points to the section containing the stub. */
138 /* This is like the call_stub field, but it is used if the function
139 being called returns a floating point value. */
140 asection *call_fp_stub;
142 /* Are we forced local? .*/
143 bfd_boolean forced_local;
146 /* MIPS ELF linker hash table. */
148 struct mips_elf_link_hash_table
150 struct elf_link_hash_table root;
152 /* We no longer use this. */
153 /* String section indices for the dynamic section symbols. */
154 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
156 /* The number of .rtproc entries. */
157 bfd_size_type procedure_count;
158 /* The size of the .compact_rel section (if SGI_COMPAT). */
159 bfd_size_type compact_rel_size;
160 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
161 entry is set to the address of __rld_obj_head as in IRIX5. */
162 bfd_boolean use_rld_obj_head;
163 /* This is the value of the __rld_map or __rld_obj_head symbol. */
165 /* This is set if we see any mips16 stub sections. */
166 bfd_boolean mips16_stubs_seen;
169 /* Structure used to pass information to mips_elf_output_extsym. */
174 struct bfd_link_info *info;
175 struct ecoff_debug_info *debug;
176 const struct ecoff_debug_swap *swap;
180 /* The names of the runtime procedure table symbols used on IRIX5. */
182 static const char * const mips_elf_dynsym_rtproc_names[] =
185 "_procedure_string_table",
186 "_procedure_table_size",
190 /* These structures are used to generate the .compact_rel section on
195 unsigned long id1; /* Always one? */
196 unsigned long num; /* Number of compact relocation entries. */
197 unsigned long id2; /* Always two? */
198 unsigned long offset; /* The file offset of the first relocation. */
199 unsigned long reserved0; /* Zero? */
200 unsigned long reserved1; /* Zero? */
209 bfd_byte reserved0[4];
210 bfd_byte reserved1[4];
211 } Elf32_External_compact_rel;
215 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
216 unsigned int rtype : 4; /* Relocation types. See below. */
217 unsigned int dist2to : 8;
218 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
219 unsigned long konst; /* KONST field. See below. */
220 unsigned long vaddr; /* VADDR to be relocated. */
225 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
226 unsigned int rtype : 4; /* Relocation types. See below. */
227 unsigned int dist2to : 8;
228 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
229 unsigned long konst; /* KONST field. See below. */
237 } Elf32_External_crinfo;
243 } Elf32_External_crinfo2;
245 /* These are the constants used to swap the bitfields in a crinfo. */
247 #define CRINFO_CTYPE (0x1)
248 #define CRINFO_CTYPE_SH (31)
249 #define CRINFO_RTYPE (0xf)
250 #define CRINFO_RTYPE_SH (27)
251 #define CRINFO_DIST2TO (0xff)
252 #define CRINFO_DIST2TO_SH (19)
253 #define CRINFO_RELVADDR (0x7ffff)
254 #define CRINFO_RELVADDR_SH (0)
256 /* A compact relocation info has long (3 words) or short (2 words)
257 formats. A short format doesn't have VADDR field and relvaddr
258 fields contains ((VADDR - vaddr of the previous entry) >> 2). */
259 #define CRF_MIPS_LONG 1
260 #define CRF_MIPS_SHORT 0
262 /* There are 4 types of compact relocation at least. The value KONST
263 has different meaning for each type:
266 CT_MIPS_REL32 Address in data
267 CT_MIPS_WORD Address in word (XXX)
268 CT_MIPS_GPHI_LO GP - vaddr
269 CT_MIPS_JMPAD Address to jump
272 #define CRT_MIPS_REL32 0xa
273 #define CRT_MIPS_WORD 0xb
274 #define CRT_MIPS_GPHI_LO 0xc
275 #define CRT_MIPS_JMPAD 0xd
277 #define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
278 #define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
279 #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
280 #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
282 /* The structure of the runtime procedure descriptor created by the
283 loader for use by the static exception system. */
285 typedef struct runtime_pdr {
286 bfd_vma adr; /* memory address of start of procedure */
287 long regmask; /* save register mask */
288 long regoffset; /* save register offset */
289 long fregmask; /* save floating point register mask */
290 long fregoffset; /* save floating point register offset */
291 long frameoffset; /* frame size */
292 short framereg; /* frame pointer register */
293 short pcreg; /* offset or reg of return pc */
294 long irpss; /* index into the runtime string table */
296 struct exception_info *exception_info;/* pointer to exception array */
298 #define cbRPDR sizeof (RPDR)
299 #define rpdNil ((pRPDR) 0)
301 static struct bfd_hash_entry *mips_elf_link_hash_newfunc
302 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
303 static void ecoff_swap_rpdr_out
304 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
305 static bfd_boolean mips_elf_create_procedure_table
306 PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
307 struct ecoff_debug_info *));
308 static bfd_boolean mips_elf_check_mips16_stubs
309 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
310 static void bfd_mips_elf32_swap_gptab_in
311 PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
312 static void bfd_mips_elf32_swap_gptab_out
313 PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
314 static void bfd_elf32_swap_compact_rel_out
315 PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
316 static void bfd_elf32_swap_crinfo_out
317 PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
319 static void bfd_mips_elf_swap_msym_in
320 PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
322 static void bfd_mips_elf_swap_msym_out
323 PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
324 static int sort_dynamic_relocs
325 PARAMS ((const void *, const void *));
326 static bfd_boolean mips_elf_output_extsym
327 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
328 static int gptab_compare PARAMS ((const void *, const void *));
329 static asection * mips_elf_got_section PARAMS ((bfd *));
330 static struct mips_got_info *mips_elf_got_info
331 PARAMS ((bfd *, asection **));
332 static bfd_vma mips_elf_local_got_index
333 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
334 static bfd_vma mips_elf_global_got_index
335 PARAMS ((bfd *, struct elf_link_hash_entry *));
336 static bfd_vma mips_elf_got_page
337 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
338 static bfd_vma mips_elf_got16_entry
339 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_boolean));
340 static bfd_vma mips_elf_got_offset_from_index
341 PARAMS ((bfd *, bfd *, bfd_vma));
342 static struct mips_got_entry *mips_elf_create_local_got_entry
343 PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
344 static bfd_boolean mips_elf_sort_hash_table
345 PARAMS ((struct bfd_link_info *, unsigned long));
346 static bfd_boolean mips_elf_sort_hash_table_f
347 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
348 static bfd_boolean mips_elf_record_global_got_symbol
349 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
350 struct mips_got_info *));
351 static const Elf_Internal_Rela *mips_elf_next_relocation
352 PARAMS ((bfd *, unsigned int, const Elf_Internal_Rela *,
353 const Elf_Internal_Rela *));
354 static bfd_boolean mips_elf_local_relocation_p
355 PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, bfd_boolean));
356 static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
357 static bfd_boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
358 static bfd_vma mips_elf_high PARAMS ((bfd_vma));
359 static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
360 static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
361 static bfd_boolean mips_elf_create_compact_rel_section
362 PARAMS ((bfd *, struct bfd_link_info *));
363 static bfd_boolean mips_elf_create_got_section
364 PARAMS ((bfd *, struct bfd_link_info *));
365 static asection *mips_elf_create_msym_section
367 static bfd_reloc_status_type mips_elf_calculate_relocation
368 PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
369 const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
370 Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
371 bfd_boolean *, bfd_boolean));
372 static bfd_vma mips_elf_obtain_contents
373 PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
374 static bfd_boolean mips_elf_perform_relocation
375 PARAMS ((struct bfd_link_info *, reloc_howto_type *,
376 const Elf_Internal_Rela *, bfd_vma, bfd *, asection *, bfd_byte *,
378 static bfd_boolean mips_elf_stub_section_p
379 PARAMS ((bfd *, asection *));
380 static void mips_elf_allocate_dynamic_relocations
381 PARAMS ((bfd *, unsigned int));
382 static bfd_boolean mips_elf_create_dynamic_relocation
383 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
384 struct mips_elf_link_hash_entry *, asection *,
385 bfd_vma, bfd_vma *, asection *));
386 static void mips_set_isa_flags PARAMS ((bfd *));
387 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
388 static void mips_elf_irix6_finish_dynamic_symbol
389 PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
390 static bfd_boolean mips_mach_extends_p PARAMS ((unsigned long, unsigned long));
391 static bfd_boolean mips_32bit_flags_p PARAMS ((flagword));
392 static hashval_t mips_elf_got_entry_hash PARAMS ((const PTR));
393 static int mips_elf_got_entry_eq PARAMS ((const PTR, const PTR));
395 /* This will be used when we sort the dynamic relocation records. */
396 static bfd *reldyn_sorting_bfd;
398 /* Nonzero if ABFD is using the N32 ABI. */
400 #define ABI_N32_P(abfd) \
401 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
403 /* Nonzero if ABFD is using the N64 ABI. */
404 #define ABI_64_P(abfd) \
405 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
407 /* Nonzero if ABFD is using NewABI conventions. */
408 #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd))
410 /* The IRIX compatibility level we are striving for. */
411 #define IRIX_COMPAT(abfd) \
412 (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd))
414 /* Whether we are trying to be compatible with IRIX at all. */
415 #define SGI_COMPAT(abfd) \
416 (IRIX_COMPAT (abfd) != ict_none)
418 /* The name of the options section. */
419 #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
420 (ABI_64_P (abfd) ? ".MIPS.options" : ".options")
422 /* The name of the stub section. */
423 #define MIPS_ELF_STUB_SECTION_NAME(abfd) \
424 (ABI_64_P (abfd) ? ".MIPS.stubs" : ".stub")
426 /* The size of an external REL relocation. */
427 #define MIPS_ELF_REL_SIZE(abfd) \
428 (get_elf_backend_data (abfd)->s->sizeof_rel)
430 /* The size of an external dynamic table entry. */
431 #define MIPS_ELF_DYN_SIZE(abfd) \
432 (get_elf_backend_data (abfd)->s->sizeof_dyn)
434 /* The size of a GOT entry. */
435 #define MIPS_ELF_GOT_SIZE(abfd) \
436 (get_elf_backend_data (abfd)->s->arch_size / 8)
438 /* The size of a symbol-table entry. */
439 #define MIPS_ELF_SYM_SIZE(abfd) \
440 (get_elf_backend_data (abfd)->s->sizeof_sym)
442 /* The default alignment for sections, as a power of two. */
443 #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
444 (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
446 /* Get word-sized data. */
447 #define MIPS_ELF_GET_WORD(abfd, ptr) \
448 (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
450 /* Put out word-sized data. */
451 #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
453 ? bfd_put_64 (abfd, val, ptr) \
454 : bfd_put_32 (abfd, val, ptr))
456 /* Add a dynamic symbol table-entry. */
458 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
459 (ABI_64_P (elf_hash_table (info)->dynobj) \
460 ? bfd_elf64_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val) \
461 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
463 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
464 (ABI_64_P (elf_hash_table (info)->dynobj) \
465 ? (abort (), FALSE) \
466 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
469 #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \
470 (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela))
472 /* Determine whether the internal relocation of index REL_IDX is REL
473 (zero) or RELA (non-zero). The assumption is that, if there are
474 two relocation sections for this section, one of them is REL and
475 the other is RELA. If the index of the relocation we're testing is
476 in range for the first relocation section, check that the external
477 relocation size is that for RELA. It is also assumed that, if
478 rel_idx is not in range for the first section, and this first
479 section contains REL relocs, then the relocation is in the second
480 section, that is RELA. */
481 #define MIPS_RELOC_RELA_P(abfd, sec, rel_idx) \
482 ((NUM_SHDR_ENTRIES (&elf_section_data (sec)->rel_hdr) \
483 * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel \
484 > (bfd_vma)(rel_idx)) \
485 == (elf_section_data (sec)->rel_hdr.sh_entsize \
486 == (ABI_64_P (abfd) ? sizeof (Elf64_External_Rela) \
487 : sizeof (Elf32_External_Rela))))
489 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
490 from smaller values. Start with zero, widen, *then* decrement. */
491 #define MINUS_ONE (((bfd_vma)0) - 1)
493 /* The number of local .got entries we reserve. */
494 #define MIPS_RESERVED_GOTNO (2)
496 /* Instructions which appear in a stub. For some reason the stub is
497 slightly different on an SGI system. */
498 #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
499 #define STUB_LW(abfd) \
502 ? 0xdf998010 /* ld t9,0x8010(gp) */ \
503 : 0x8f998010) /* lw t9,0x8010(gp) */ \
504 : 0x8f998010) /* lw t9,0x8000(gp) */
505 #define STUB_MOVE(abfd) \
506 (SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */
507 #define STUB_JALR 0x0320f809 /* jal t9 */
508 #define STUB_LI16(abfd) \
509 (SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */
510 #define MIPS_FUNCTION_STUB_SIZE (16)
512 /* The name of the dynamic interpreter. This is put in the .interp
515 #define ELF_DYNAMIC_INTERPRETER(abfd) \
516 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
517 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
518 : "/usr/lib/libc.so.1")
521 #define MNAME(bfd,pre,pos) \
522 (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos))
523 #define ELF_R_SYM(bfd, i) \
524 (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i))
525 #define ELF_R_TYPE(bfd, i) \
526 (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i))
527 #define ELF_R_INFO(bfd, s, t) \
528 (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t))
530 #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos)
531 #define ELF_R_SYM(bfd, i) \
533 #define ELF_R_TYPE(bfd, i) \
535 #define ELF_R_INFO(bfd, s, t) \
536 (ELF32_R_INFO (s, t))
539 /* The mips16 compiler uses a couple of special sections to handle
540 floating point arguments.
542 Section names that look like .mips16.fn.FNNAME contain stubs that
543 copy floating point arguments from the fp regs to the gp regs and
544 then jump to FNNAME. If any 32 bit function calls FNNAME, the
545 call should be redirected to the stub instead. If no 32 bit
546 function calls FNNAME, the stub should be discarded. We need to
547 consider any reference to the function, not just a call, because
548 if the address of the function is taken we will need the stub,
549 since the address might be passed to a 32 bit function.
551 Section names that look like .mips16.call.FNNAME contain stubs
552 that copy floating point arguments from the gp regs to the fp
553 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
554 then any 16 bit function that calls FNNAME should be redirected
555 to the stub instead. If FNNAME is not a 32 bit function, the
556 stub should be discarded.
558 .mips16.call.fp.FNNAME sections are similar, but contain stubs
559 which call FNNAME and then copy the return value from the fp regs
560 to the gp regs. These stubs store the return value in $18 while
561 calling FNNAME; any function which might call one of these stubs
562 must arrange to save $18 around the call. (This case is not
563 needed for 32 bit functions that call 16 bit functions, because
564 16 bit functions always return floating point values in both
567 Note that in all cases FNNAME might be defined statically.
568 Therefore, FNNAME is not used literally. Instead, the relocation
569 information will indicate which symbol the section is for.
571 We record any stubs that we find in the symbol table. */
573 #define FN_STUB ".mips16.fn."
574 #define CALL_STUB ".mips16.call."
575 #define CALL_FP_STUB ".mips16.call.fp."
577 /* Look up an entry in a MIPS ELF linker hash table. */
579 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
580 ((struct mips_elf_link_hash_entry *) \
581 elf_link_hash_lookup (&(table)->root, (string), (create), \
584 /* Traverse a MIPS ELF linker hash table. */
586 #define mips_elf_link_hash_traverse(table, func, info) \
587 (elf_link_hash_traverse \
589 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
592 /* Get the MIPS ELF linker hash table from a link_info structure. */
594 #define mips_elf_hash_table(p) \
595 ((struct mips_elf_link_hash_table *) ((p)->hash))
597 /* Create an entry in a MIPS ELF linker hash table. */
599 static struct bfd_hash_entry *
600 mips_elf_link_hash_newfunc (entry, table, string)
601 struct bfd_hash_entry *entry;
602 struct bfd_hash_table *table;
605 struct mips_elf_link_hash_entry *ret =
606 (struct mips_elf_link_hash_entry *) entry;
608 /* Allocate the structure if it has not already been allocated by a
610 if (ret == (struct mips_elf_link_hash_entry *) NULL)
611 ret = ((struct mips_elf_link_hash_entry *)
612 bfd_hash_allocate (table,
613 sizeof (struct mips_elf_link_hash_entry)));
614 if (ret == (struct mips_elf_link_hash_entry *) NULL)
615 return (struct bfd_hash_entry *) ret;
617 /* Call the allocation method of the superclass. */
618 ret = ((struct mips_elf_link_hash_entry *)
619 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
621 if (ret != (struct mips_elf_link_hash_entry *) NULL)
623 /* Set local fields. */
624 memset (&ret->esym, 0, sizeof (EXTR));
625 /* We use -2 as a marker to indicate that the information has
626 not been set. -1 means there is no associated ifd. */
628 ret->possibly_dynamic_relocs = 0;
629 ret->readonly_reloc = FALSE;
630 ret->min_dyn_reloc_index = 0;
631 ret->no_fn_stub = FALSE;
633 ret->need_fn_stub = FALSE;
634 ret->call_stub = NULL;
635 ret->call_fp_stub = NULL;
636 ret->forced_local = FALSE;
639 return (struct bfd_hash_entry *) ret;
642 /* Read ECOFF debugging information from a .mdebug section into a
643 ecoff_debug_info structure. */
646 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
649 struct ecoff_debug_info *debug;
652 const struct ecoff_debug_swap *swap;
653 char *ext_hdr = NULL;
655 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
656 memset (debug, 0, sizeof (*debug));
658 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
659 if (ext_hdr == NULL && swap->external_hdr_size != 0)
662 if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
663 swap->external_hdr_size))
666 symhdr = &debug->symbolic_header;
667 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
669 /* The symbolic header contains absolute file offsets and sizes to
671 #define READ(ptr, offset, count, size, type) \
672 if (symhdr->count == 0) \
676 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
677 debug->ptr = (type) bfd_malloc (amt); \
678 if (debug->ptr == NULL) \
680 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
681 || bfd_bread (debug->ptr, amt, abfd) != amt) \
685 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
686 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
687 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
688 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
689 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
690 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
692 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
693 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
694 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
695 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
696 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
700 debug->adjust = NULL;
707 if (debug->line != NULL)
709 if (debug->external_dnr != NULL)
710 free (debug->external_dnr);
711 if (debug->external_pdr != NULL)
712 free (debug->external_pdr);
713 if (debug->external_sym != NULL)
714 free (debug->external_sym);
715 if (debug->external_opt != NULL)
716 free (debug->external_opt);
717 if (debug->external_aux != NULL)
718 free (debug->external_aux);
719 if (debug->ss != NULL)
721 if (debug->ssext != NULL)
723 if (debug->external_fdr != NULL)
724 free (debug->external_fdr);
725 if (debug->external_rfd != NULL)
726 free (debug->external_rfd);
727 if (debug->external_ext != NULL)
728 free (debug->external_ext);
732 /* Swap RPDR (runtime procedure table entry) for output. */
735 ecoff_swap_rpdr_out (abfd, in, ex)
740 H_PUT_S32 (abfd, in->adr, ex->p_adr);
741 H_PUT_32 (abfd, in->regmask, ex->p_regmask);
742 H_PUT_32 (abfd, in->regoffset, ex->p_regoffset);
743 H_PUT_32 (abfd, in->fregmask, ex->p_fregmask);
744 H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset);
745 H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset);
747 H_PUT_16 (abfd, in->framereg, ex->p_framereg);
748 H_PUT_16 (abfd, in->pcreg, ex->p_pcreg);
750 H_PUT_32 (abfd, in->irpss, ex->p_irpss);
752 H_PUT_S32 (abfd, in->exception_info, ex->p_exception_info);
756 /* Create a runtime procedure table from the .mdebug section. */
759 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
762 struct bfd_link_info *info;
764 struct ecoff_debug_info *debug;
766 const struct ecoff_debug_swap *swap;
767 HDRR *hdr = &debug->symbolic_header;
769 struct rpdr_ext *erp;
771 struct pdr_ext *epdr;
772 struct sym_ext *esym;
777 unsigned long sindex;
781 const char *no_name_func = _("static procedure (no name)");
789 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
791 sindex = strlen (no_name_func) + 1;
795 size = swap->external_pdr_size;
797 epdr = (struct pdr_ext *) bfd_malloc (size * count);
801 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
804 size = sizeof (RPDR);
805 rp = rpdr = (RPDR *) bfd_malloc (size * count);
809 size = sizeof (char *);
810 sv = (char **) bfd_malloc (size * count);
814 count = hdr->isymMax;
815 size = swap->external_sym_size;
816 esym = (struct sym_ext *) bfd_malloc (size * count);
820 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
824 ss = (char *) bfd_malloc (count);
827 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
831 for (i = 0; i < (unsigned long) count; i++, rp++)
833 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
834 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
836 rp->regmask = pdr.regmask;
837 rp->regoffset = pdr.regoffset;
838 rp->fregmask = pdr.fregmask;
839 rp->fregoffset = pdr.fregoffset;
840 rp->frameoffset = pdr.frameoffset;
841 rp->framereg = pdr.framereg;
842 rp->pcreg = pdr.pcreg;
844 sv[i] = ss + sym.iss;
845 sindex += strlen (sv[i]) + 1;
849 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
850 size = BFD_ALIGN (size, 16);
851 rtproc = (PTR) bfd_alloc (abfd, size);
854 mips_elf_hash_table (info)->procedure_count = 0;
858 mips_elf_hash_table (info)->procedure_count = count + 2;
860 erp = (struct rpdr_ext *) rtproc;
861 memset (erp, 0, sizeof (struct rpdr_ext));
863 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
864 strcpy (str, no_name_func);
865 str += strlen (no_name_func) + 1;
866 for (i = 0; i < count; i++)
868 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
870 str += strlen (sv[i]) + 1;
872 H_PUT_S32 (abfd, -1, (erp + count)->p_adr);
874 /* Set the size and contents of .rtproc section. */
876 s->contents = (bfd_byte *) rtproc;
878 /* Skip this section later on (I don't think this currently
879 matters, but someday it might). */
880 s->link_order_head = (struct bfd_link_order *) NULL;
909 /* Check the mips16 stubs for a particular symbol, and see if we can
913 mips_elf_check_mips16_stubs (h, data)
914 struct mips_elf_link_hash_entry *h;
915 PTR data ATTRIBUTE_UNUSED;
917 if (h->root.root.type == bfd_link_hash_warning)
918 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
920 if (h->fn_stub != NULL
921 && ! h->need_fn_stub)
923 /* We don't need the fn_stub; the only references to this symbol
924 are 16 bit calls. Clobber the size to 0 to prevent it from
925 being included in the link. */
926 h->fn_stub->_raw_size = 0;
927 h->fn_stub->_cooked_size = 0;
928 h->fn_stub->flags &= ~SEC_RELOC;
929 h->fn_stub->reloc_count = 0;
930 h->fn_stub->flags |= SEC_EXCLUDE;
933 if (h->call_stub != NULL
934 && h->root.other == STO_MIPS16)
936 /* We don't need the call_stub; this is a 16 bit function, so
937 calls from other 16 bit functions are OK. Clobber the size
938 to 0 to prevent it from being included in the link. */
939 h->call_stub->_raw_size = 0;
940 h->call_stub->_cooked_size = 0;
941 h->call_stub->flags &= ~SEC_RELOC;
942 h->call_stub->reloc_count = 0;
943 h->call_stub->flags |= SEC_EXCLUDE;
946 if (h->call_fp_stub != NULL
947 && h->root.other == STO_MIPS16)
949 /* We don't need the call_stub; this is a 16 bit function, so
950 calls from other 16 bit functions are OK. Clobber the size
951 to 0 to prevent it from being included in the link. */
952 h->call_fp_stub->_raw_size = 0;
953 h->call_fp_stub->_cooked_size = 0;
954 h->call_fp_stub->flags &= ~SEC_RELOC;
955 h->call_fp_stub->reloc_count = 0;
956 h->call_fp_stub->flags |= SEC_EXCLUDE;
962 bfd_reloc_status_type
963 _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
964 relocateable, data, gp)
967 arelent *reloc_entry;
968 asection *input_section;
969 bfd_boolean relocateable;
977 if (bfd_is_com_section (symbol->section))
980 relocation = symbol->value;
982 relocation += symbol->section->output_section->vma;
983 relocation += symbol->section->output_offset;
985 if (reloc_entry->address > input_section->_cooked_size)
986 return bfd_reloc_outofrange;
988 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
990 /* Set val to the offset into the section or symbol. */
991 if (reloc_entry->howto->src_mask == 0)
993 /* This case occurs with the 64-bit MIPS ELF ABI. */
994 val = reloc_entry->addend;
998 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
1003 /* Adjust val for the final section location and GP value. If we
1004 are producing relocateable output, we don't want to do this for
1005 an external symbol. */
1007 || (symbol->flags & BSF_SECTION_SYM) != 0)
1008 val += relocation - gp;
1010 insn = (insn & ~0xffff) | (val & 0xffff);
1011 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
1014 reloc_entry->address += input_section->output_offset;
1016 else if ((long) val >= 0x8000 || (long) val < -0x8000)
1017 return bfd_reloc_overflow;
1019 return bfd_reloc_ok;
1022 /* Swap an entry in a .gptab section. Note that these routines rely
1023 on the equivalence of the two elements of the union. */
1026 bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
1028 const Elf32_External_gptab *ex;
1031 in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value);
1032 in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes);
1036 bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
1038 const Elf32_gptab *in;
1039 Elf32_External_gptab *ex;
1041 H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value);
1042 H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes);
1046 bfd_elf32_swap_compact_rel_out (abfd, in, ex)
1048 const Elf32_compact_rel *in;
1049 Elf32_External_compact_rel *ex;
1051 H_PUT_32 (abfd, in->id1, ex->id1);
1052 H_PUT_32 (abfd, in->num, ex->num);
1053 H_PUT_32 (abfd, in->id2, ex->id2);
1054 H_PUT_32 (abfd, in->offset, ex->offset);
1055 H_PUT_32 (abfd, in->reserved0, ex->reserved0);
1056 H_PUT_32 (abfd, in->reserved1, ex->reserved1);
1060 bfd_elf32_swap_crinfo_out (abfd, in, ex)
1062 const Elf32_crinfo *in;
1063 Elf32_External_crinfo *ex;
1067 l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
1068 | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
1069 | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
1070 | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
1071 H_PUT_32 (abfd, l, ex->info);
1072 H_PUT_32 (abfd, in->konst, ex->konst);
1073 H_PUT_32 (abfd, in->vaddr, ex->vaddr);
1077 /* Swap in an MSYM entry. */
1080 bfd_mips_elf_swap_msym_in (abfd, ex, in)
1082 const Elf32_External_Msym *ex;
1083 Elf32_Internal_Msym *in;
1085 in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value);
1086 in->ms_info = H_GET_32 (abfd, ex->ms_info);
1089 /* Swap out an MSYM entry. */
1092 bfd_mips_elf_swap_msym_out (abfd, in, ex)
1094 const Elf32_Internal_Msym *in;
1095 Elf32_External_Msym *ex;
1097 H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
1098 H_PUT_32 (abfd, in->ms_info, ex->ms_info);
1101 /* A .reginfo section holds a single Elf32_RegInfo structure. These
1102 routines swap this structure in and out. They are used outside of
1103 BFD, so they are globally visible. */
1106 bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
1108 const Elf32_External_RegInfo *ex;
1111 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
1112 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
1113 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
1114 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
1115 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
1116 in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value);
1120 bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
1122 const Elf32_RegInfo *in;
1123 Elf32_External_RegInfo *ex;
1125 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
1126 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
1127 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
1128 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
1129 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
1130 H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value);
1133 /* In the 64 bit ABI, the .MIPS.options section holds register
1134 information in an Elf64_Reginfo structure. These routines swap
1135 them in and out. They are globally visible because they are used
1136 outside of BFD. These routines are here so that gas can call them
1137 without worrying about whether the 64 bit ABI has been included. */
1140 bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
1142 const Elf64_External_RegInfo *ex;
1143 Elf64_Internal_RegInfo *in;
1145 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
1146 in->ri_pad = H_GET_32 (abfd, ex->ri_pad);
1147 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
1148 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
1149 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
1150 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
1151 in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value);
1155 bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
1157 const Elf64_Internal_RegInfo *in;
1158 Elf64_External_RegInfo *ex;
1160 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
1161 H_PUT_32 (abfd, in->ri_pad, ex->ri_pad);
1162 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
1163 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
1164 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
1165 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
1166 H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value);
1169 /* Swap in an options header. */
1172 bfd_mips_elf_swap_options_in (abfd, ex, in)
1174 const Elf_External_Options *ex;
1175 Elf_Internal_Options *in;
1177 in->kind = H_GET_8 (abfd, ex->kind);
1178 in->size = H_GET_8 (abfd, ex->size);
1179 in->section = H_GET_16 (abfd, ex->section);
1180 in->info = H_GET_32 (abfd, ex->info);
1183 /* Swap out an options header. */
1186 bfd_mips_elf_swap_options_out (abfd, in, ex)
1188 const Elf_Internal_Options *in;
1189 Elf_External_Options *ex;
1191 H_PUT_8 (abfd, in->kind, ex->kind);
1192 H_PUT_8 (abfd, in->size, ex->size);
1193 H_PUT_16 (abfd, in->section, ex->section);
1194 H_PUT_32 (abfd, in->info, ex->info);
1197 /* This function is called via qsort() to sort the dynamic relocation
1198 entries by increasing r_symndx value. */
1201 sort_dynamic_relocs (arg1, arg2)
1205 Elf_Internal_Rela int_reloc1;
1206 Elf_Internal_Rela int_reloc2;
1208 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1);
1209 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2);
1211 return ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info);
1214 /* This routine is used to write out ECOFF debugging external symbol
1215 information. It is called via mips_elf_link_hash_traverse. The
1216 ECOFF external symbol information must match the ELF external
1217 symbol information. Unfortunately, at this point we don't know
1218 whether a symbol is required by reloc information, so the two
1219 tables may wind up being different. We must sort out the external
1220 symbol information before we can set the final size of the .mdebug
1221 section, and we must set the size of the .mdebug section before we
1222 can relocate any sections, and we can't know which symbols are
1223 required by relocation until we relocate the sections.
1224 Fortunately, it is relatively unlikely that any symbol will be
1225 stripped but required by a reloc. In particular, it can not happen
1226 when generating a final executable. */
1229 mips_elf_output_extsym (h, data)
1230 struct mips_elf_link_hash_entry *h;
1233 struct extsym_info *einfo = (struct extsym_info *) data;
1235 asection *sec, *output_section;
1237 if (h->root.root.type == bfd_link_hash_warning)
1238 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1240 if (h->root.indx == -2)
1242 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1243 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
1244 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
1245 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
1247 else if (einfo->info->strip == strip_all
1248 || (einfo->info->strip == strip_some
1249 && bfd_hash_lookup (einfo->info->keep_hash,
1250 h->root.root.root.string,
1251 FALSE, FALSE) == NULL))
1259 if (h->esym.ifd == -2)
1262 h->esym.cobol_main = 0;
1263 h->esym.weakext = 0;
1264 h->esym.reserved = 0;
1265 h->esym.ifd = ifdNil;
1266 h->esym.asym.value = 0;
1267 h->esym.asym.st = stGlobal;
1269 if (h->root.root.type == bfd_link_hash_undefined
1270 || h->root.root.type == bfd_link_hash_undefweak)
1274 /* Use undefined class. Also, set class and type for some
1276 name = h->root.root.root.string;
1277 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
1278 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
1280 h->esym.asym.sc = scData;
1281 h->esym.asym.st = stLabel;
1282 h->esym.asym.value = 0;
1284 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
1286 h->esym.asym.sc = scAbs;
1287 h->esym.asym.st = stLabel;
1288 h->esym.asym.value =
1289 mips_elf_hash_table (einfo->info)->procedure_count;
1291 else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd))
1293 h->esym.asym.sc = scAbs;
1294 h->esym.asym.st = stLabel;
1295 h->esym.asym.value = elf_gp (einfo->abfd);
1298 h->esym.asym.sc = scUndefined;
1300 else if (h->root.root.type != bfd_link_hash_defined
1301 && h->root.root.type != bfd_link_hash_defweak)
1302 h->esym.asym.sc = scAbs;
1307 sec = h->root.root.u.def.section;
1308 output_section = sec->output_section;
1310 /* When making a shared library and symbol h is the one from
1311 the another shared library, OUTPUT_SECTION may be null. */
1312 if (output_section == NULL)
1313 h->esym.asym.sc = scUndefined;
1316 name = bfd_section_name (output_section->owner, output_section);
1318 if (strcmp (name, ".text") == 0)
1319 h->esym.asym.sc = scText;
1320 else if (strcmp (name, ".data") == 0)
1321 h->esym.asym.sc = scData;
1322 else if (strcmp (name, ".sdata") == 0)
1323 h->esym.asym.sc = scSData;
1324 else if (strcmp (name, ".rodata") == 0
1325 || strcmp (name, ".rdata") == 0)
1326 h->esym.asym.sc = scRData;
1327 else if (strcmp (name, ".bss") == 0)
1328 h->esym.asym.sc = scBss;
1329 else if (strcmp (name, ".sbss") == 0)
1330 h->esym.asym.sc = scSBss;
1331 else if (strcmp (name, ".init") == 0)
1332 h->esym.asym.sc = scInit;
1333 else if (strcmp (name, ".fini") == 0)
1334 h->esym.asym.sc = scFini;
1336 h->esym.asym.sc = scAbs;
1340 h->esym.asym.reserved = 0;
1341 h->esym.asym.index = indexNil;
1344 if (h->root.root.type == bfd_link_hash_common)
1345 h->esym.asym.value = h->root.root.u.c.size;
1346 else if (h->root.root.type == bfd_link_hash_defined
1347 || h->root.root.type == bfd_link_hash_defweak)
1349 if (h->esym.asym.sc == scCommon)
1350 h->esym.asym.sc = scBss;
1351 else if (h->esym.asym.sc == scSCommon)
1352 h->esym.asym.sc = scSBss;
1354 sec = h->root.root.u.def.section;
1355 output_section = sec->output_section;
1356 if (output_section != NULL)
1357 h->esym.asym.value = (h->root.root.u.def.value
1358 + sec->output_offset
1359 + output_section->vma);
1361 h->esym.asym.value = 0;
1363 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1365 struct mips_elf_link_hash_entry *hd = h;
1366 bfd_boolean no_fn_stub = h->no_fn_stub;
1368 while (hd->root.root.type == bfd_link_hash_indirect)
1370 hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link;
1371 no_fn_stub = no_fn_stub || hd->no_fn_stub;
1376 /* Set type and value for a symbol with a function stub. */
1377 h->esym.asym.st = stProc;
1378 sec = hd->root.root.u.def.section;
1380 h->esym.asym.value = 0;
1383 output_section = sec->output_section;
1384 if (output_section != NULL)
1385 h->esym.asym.value = (hd->root.plt.offset
1386 + sec->output_offset
1387 + output_section->vma);
1389 h->esym.asym.value = 0;
1397 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
1398 h->root.root.root.string,
1401 einfo->failed = TRUE;
1408 /* A comparison routine used to sort .gptab entries. */
1411 gptab_compare (p1, p2)
1415 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
1416 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
1418 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
1421 /* Functions to manage the got entry hash table. */
1423 mips_elf_got_entry_hash (entry_)
1426 const struct mips_got_entry *entry = (struct mips_got_entry *)entry_;
1428 return htab_hash_pointer (entry->abfd) + entry->symndx
1430 + (entry->addend >> 32)
1436 mips_elf_got_entry_eq (entry1, entry2)
1440 const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1;
1441 const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2;
1443 return e1->abfd == e2->abfd && e1->symndx == e2->symndx
1444 && e1->addend == e2->addend;
1447 /* Returns the GOT section for ABFD. */
1450 mips_elf_got_section (abfd)
1453 return bfd_get_section_by_name (abfd, ".got");
1456 /* Returns the GOT information associated with the link indicated by
1457 INFO. If SGOTP is non-NULL, it is filled in with the GOT
1460 static struct mips_got_info *
1461 mips_elf_got_info (abfd, sgotp)
1466 struct mips_got_info *g;
1468 sgot = mips_elf_got_section (abfd);
1469 BFD_ASSERT (sgot != NULL);
1470 BFD_ASSERT (elf_section_data (sgot) != NULL);
1471 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
1472 BFD_ASSERT (g != NULL);
1479 /* Returns the GOT offset at which the indicated address can be found.
1480 If there is not yet a GOT entry for this value, create one. Returns
1481 -1 if no satisfactory GOT offset can be found. */
1484 mips_elf_local_got_index (abfd, info, value)
1486 struct bfd_link_info *info;
1490 struct mips_got_info *g;
1491 struct mips_got_entry *entry;
1493 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1495 entry = mips_elf_create_local_got_entry (abfd, g, sgot, value);
1497 return entry->gotidx;
1502 /* Returns the GOT index for the global symbol indicated by H. */
1505 mips_elf_global_got_index (abfd, h)
1507 struct elf_link_hash_entry *h;
1511 struct mips_got_info *g;
1512 long global_got_dynindx = 0;
1514 g = mips_elf_got_info (abfd, &sgot);
1515 if (g->global_gotsym != NULL)
1516 global_got_dynindx = g->global_gotsym->dynindx;
1518 /* Once we determine the global GOT entry with the lowest dynamic
1519 symbol table index, we must put all dynamic symbols with greater
1520 indices into the GOT. That makes it easy to calculate the GOT
1522 BFD_ASSERT (h->dynindx >= global_got_dynindx);
1523 index = ((h->dynindx - global_got_dynindx + g->local_gotno)
1524 * MIPS_ELF_GOT_SIZE (abfd));
1525 BFD_ASSERT (index < sgot->_raw_size);
1530 /* Find a GOT entry that is within 32KB of the VALUE. These entries
1531 are supposed to be placed at small offsets in the GOT, i.e.,
1532 within 32KB of GP. Return the index into the GOT for this page,
1533 and store the offset from this entry to the desired address in
1534 OFFSETP, if it is non-NULL. */
1537 mips_elf_got_page (abfd, info, value, offsetp)
1539 struct bfd_link_info *info;
1544 struct mips_got_info *g;
1546 struct mips_got_entry *entry;
1548 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1550 entry = mips_elf_create_local_got_entry (abfd, g, sgot,
1552 & (~(bfd_vma)0xffff));
1557 index = entry->gotidx;
1560 *offsetp = value - entry->addend;
1565 /* Find a GOT entry whose higher-order 16 bits are the same as those
1566 for value. Return the index into the GOT for this entry. */
1569 mips_elf_got16_entry (abfd, info, value, external)
1571 struct bfd_link_info *info;
1573 bfd_boolean external;
1576 struct mips_got_info *g;
1577 struct mips_got_entry *entry;
1581 /* Although the ABI says that it is "the high-order 16 bits" that we
1582 want, it is really the %high value. The complete value is
1583 calculated with a `addiu' of a LO16 relocation, just as with a
1585 value = mips_elf_high (value) << 16;
1588 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1590 entry = mips_elf_create_local_got_entry (abfd, g, sgot, value);
1592 return entry->gotidx;
1597 /* Returns the offset for the entry at the INDEXth position
1601 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
1609 sgot = mips_elf_got_section (dynobj);
1610 gp = _bfd_get_gp_value (output_bfd);
1611 return (sgot->output_section->vma + sgot->output_offset + index -
1615 /* Create a local GOT entry for VALUE. Return the index of the entry,
1616 or -1 if it could not be created. */
1618 static struct mips_got_entry *
1619 mips_elf_create_local_got_entry (abfd, g, sgot, value)
1621 struct mips_got_info *g;
1625 struct mips_got_entry entry, **loc;
1628 entry.symndx = (unsigned long)-1;
1629 entry.addend = value;
1631 loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry,
1636 entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
1638 *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry);
1643 memcpy (*loc, &entry, sizeof entry);
1645 if (g->assigned_gotno >= g->local_gotno)
1647 (*loc)->gotidx = (unsigned long)-1;
1648 /* We didn't allocate enough space in the GOT. */
1649 (*_bfd_error_handler)
1650 (_("not enough GOT space for local GOT entries"));
1651 bfd_set_error (bfd_error_bad_value);
1655 MIPS_ELF_PUT_WORD (abfd, value,
1656 (sgot->contents + entry.gotidx));
1661 /* Sort the dynamic symbol table so that symbols that need GOT entries
1662 appear towards the end. This reduces the amount of GOT space
1663 required. MAX_LOCAL is used to set the number of local symbols
1664 known to be in the dynamic symbol table. During
1665 _bfd_mips_elf_size_dynamic_sections, this value is 1. Afterward, the
1666 section symbols are added and the count is higher. */
1669 mips_elf_sort_hash_table (info, max_local)
1670 struct bfd_link_info *info;
1671 unsigned long max_local;
1673 struct mips_elf_hash_sort_data hsd;
1674 struct mips_got_info *g;
1677 dynobj = elf_hash_table (info)->dynobj;
1680 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
1681 hsd.max_non_got_dynindx = max_local;
1682 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
1683 elf_hash_table (info)),
1684 mips_elf_sort_hash_table_f,
1687 /* There should have been enough room in the symbol table to
1688 accommodate both the GOT and non-GOT symbols. */
1689 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
1691 /* Now we know which dynamic symbol has the lowest dynamic symbol
1692 table index in the GOT. */
1693 g = mips_elf_got_info (dynobj, NULL);
1694 g->global_gotsym = hsd.low;
1699 /* If H needs a GOT entry, assign it the highest available dynamic
1700 index. Otherwise, assign it the lowest available dynamic
1704 mips_elf_sort_hash_table_f (h, data)
1705 struct mips_elf_link_hash_entry *h;
1708 struct mips_elf_hash_sort_data *hsd
1709 = (struct mips_elf_hash_sort_data *) data;
1711 if (h->root.root.type == bfd_link_hash_warning)
1712 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1714 /* Symbols without dynamic symbol table entries aren't interesting
1716 if (h->root.dynindx == -1)
1719 if (h->root.got.offset != 1)
1720 h->root.dynindx = hsd->max_non_got_dynindx++;
1723 h->root.dynindx = --hsd->min_got_dynindx;
1724 hsd->low = (struct elf_link_hash_entry *) h;
1730 /* If H is a symbol that needs a global GOT entry, but has a dynamic
1731 symbol table index lower than any we've seen to date, record it for
1735 mips_elf_record_global_got_symbol (h, info, g)
1736 struct elf_link_hash_entry *h;
1737 struct bfd_link_info *info;
1738 struct mips_got_info *g ATTRIBUTE_UNUSED;
1740 /* A global symbol in the GOT must also be in the dynamic symbol
1742 if (h->dynindx == -1)
1744 switch (ELF_ST_VISIBILITY (h->other))
1748 _bfd_mips_elf_hide_symbol (info, h, TRUE);
1751 if (!bfd_elf32_link_record_dynamic_symbol (info, h))
1755 /* If we've already marked this entry as needing GOT space, we don't
1756 need to do it again. */
1757 if (h->got.offset != MINUS_ONE)
1760 /* By setting this to a value other than -1, we are indicating that
1761 there needs to be a GOT entry for H. Avoid using zero, as the
1762 generic ELF copy_indirect_symbol tests for <= 0. */
1768 /* Returns the first relocation of type r_type found, beginning with
1769 RELOCATION. RELEND is one-past-the-end of the relocation table. */
1771 static const Elf_Internal_Rela *
1772 mips_elf_next_relocation (abfd, r_type, relocation, relend)
1773 bfd *abfd ATTRIBUTE_UNUSED;
1774 unsigned int r_type;
1775 const Elf_Internal_Rela *relocation;
1776 const Elf_Internal_Rela *relend;
1778 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
1779 immediately following. However, for the IRIX6 ABI, the next
1780 relocation may be a composed relocation consisting of several
1781 relocations for the same address. In that case, the R_MIPS_LO16
1782 relocation may occur as one of these. We permit a similar
1783 extension in general, as that is useful for GCC. */
1784 while (relocation < relend)
1786 if (ELF_R_TYPE (abfd, relocation->r_info) == r_type)
1792 /* We didn't find it. */
1793 bfd_set_error (bfd_error_bad_value);
1797 /* Return whether a relocation is against a local symbol. */
1800 mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
1803 const Elf_Internal_Rela *relocation;
1804 asection **local_sections;
1805 bfd_boolean check_forced;
1807 unsigned long r_symndx;
1808 Elf_Internal_Shdr *symtab_hdr;
1809 struct mips_elf_link_hash_entry *h;
1812 r_symndx = ELF_R_SYM (input_bfd, relocation->r_info);
1813 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1814 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
1816 if (r_symndx < extsymoff)
1818 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
1823 /* Look up the hash table to check whether the symbol
1824 was forced local. */
1825 h = (struct mips_elf_link_hash_entry *)
1826 elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
1827 /* Find the real hash-table entry for this symbol. */
1828 while (h->root.root.type == bfd_link_hash_indirect
1829 || h->root.root.type == bfd_link_hash_warning)
1830 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1831 if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1838 /* Sign-extend VALUE, which has the indicated number of BITS. */
1841 mips_elf_sign_extend (value, bits)
1845 if (value & ((bfd_vma) 1 << (bits - 1)))
1846 /* VALUE is negative. */
1847 value |= ((bfd_vma) - 1) << bits;
1852 /* Return non-zero if the indicated VALUE has overflowed the maximum
1853 range expressable by a signed number with the indicated number of
1857 mips_elf_overflow_p (value, bits)
1861 bfd_signed_vma svalue = (bfd_signed_vma) value;
1863 if (svalue > (1 << (bits - 1)) - 1)
1864 /* The value is too big. */
1866 else if (svalue < -(1 << (bits - 1)))
1867 /* The value is too small. */
1874 /* Calculate the %high function. */
1877 mips_elf_high (value)
1880 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
1883 /* Calculate the %higher function. */
1886 mips_elf_higher (value)
1887 bfd_vma value ATTRIBUTE_UNUSED;
1890 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
1893 return (bfd_vma) -1;
1897 /* Calculate the %highest function. */
1900 mips_elf_highest (value)
1901 bfd_vma value ATTRIBUTE_UNUSED;
1904 return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff;
1907 return (bfd_vma) -1;
1911 /* Create the .compact_rel section. */
1914 mips_elf_create_compact_rel_section (abfd, info)
1916 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1919 register asection *s;
1921 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
1923 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
1926 s = bfd_make_section (abfd, ".compact_rel");
1928 || ! bfd_set_section_flags (abfd, s, flags)
1929 || ! bfd_set_section_alignment (abfd, s,
1930 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
1933 s->_raw_size = sizeof (Elf32_External_compact_rel);
1939 /* Create the .got section to hold the global offset table. */
1942 mips_elf_create_got_section (abfd, info)
1944 struct bfd_link_info *info;
1947 register asection *s;
1948 struct elf_link_hash_entry *h;
1949 struct bfd_link_hash_entry *bh;
1950 struct mips_got_info *g;
1953 /* This function may be called more than once. */
1954 if (mips_elf_got_section (abfd))
1957 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1958 | SEC_LINKER_CREATED);
1960 s = bfd_make_section (abfd, ".got");
1962 || ! bfd_set_section_flags (abfd, s, flags)
1963 || ! bfd_set_section_alignment (abfd, s, 4))
1966 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
1967 linker script because we don't want to define the symbol if we
1968 are not creating a global offset table. */
1970 if (! (_bfd_generic_link_add_one_symbol
1971 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
1972 (bfd_vma) 0, (const char *) NULL, FALSE,
1973 get_elf_backend_data (abfd)->collect, &bh)))
1976 h = (struct elf_link_hash_entry *) bh;
1977 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
1978 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1979 h->type = STT_OBJECT;
1982 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
1985 /* The first several global offset table entries are reserved. */
1986 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
1988 amt = sizeof (struct mips_got_info);
1989 g = (struct mips_got_info *) bfd_alloc (abfd, amt);
1992 g->global_gotsym = NULL;
1993 g->local_gotno = MIPS_RESERVED_GOTNO;
1994 g->assigned_gotno = MIPS_RESERVED_GOTNO;
1995 g->got_entries = htab_try_create (1, mips_elf_got_entry_hash,
1996 mips_elf_got_entry_eq,
1998 if (g->got_entries == NULL)
2000 if (elf_section_data (s) == NULL)
2002 amt = sizeof (struct bfd_elf_section_data);
2003 s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
2004 if (elf_section_data (s) == NULL)
2007 elf_section_data (s)->tdata = (PTR) g;
2008 elf_section_data (s)->this_hdr.sh_flags
2009 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
2014 /* Returns the .msym section for ABFD, creating it if it does not
2015 already exist. Returns NULL to indicate error. */
2018 mips_elf_create_msym_section (abfd)
2023 s = bfd_get_section_by_name (abfd, ".msym");
2026 s = bfd_make_section (abfd, ".msym");
2028 || !bfd_set_section_flags (abfd, s,
2032 | SEC_LINKER_CREATED
2034 || !bfd_set_section_alignment (abfd, s,
2035 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
2042 /* Calculate the value produced by the RELOCATION (which comes from
2043 the INPUT_BFD). The ADDEND is the addend to use for this
2044 RELOCATION; RELOCATION->R_ADDEND is ignored.
2046 The result of the relocation calculation is stored in VALUEP.
2047 REQUIRE_JALXP indicates whether or not the opcode used with this
2048 relocation must be JALX.
2050 This function returns bfd_reloc_continue if the caller need take no
2051 further action regarding this relocation, bfd_reloc_notsupported if
2052 something goes dramatically wrong, bfd_reloc_overflow if an
2053 overflow occurs, and bfd_reloc_ok to indicate success. */
2055 static bfd_reloc_status_type
2056 mips_elf_calculate_relocation (abfd, input_bfd, input_section, info,
2057 relocation, addend, howto, local_syms,
2058 local_sections, valuep, namep,
2059 require_jalxp, save_addend)
2062 asection *input_section;
2063 struct bfd_link_info *info;
2064 const Elf_Internal_Rela *relocation;
2066 reloc_howto_type *howto;
2067 Elf_Internal_Sym *local_syms;
2068 asection **local_sections;
2071 bfd_boolean *require_jalxp;
2072 bfd_boolean save_addend;
2074 /* The eventual value we will return. */
2076 /* The address of the symbol against which the relocation is
2079 /* The final GP value to be used for the relocatable, executable, or
2080 shared object file being produced. */
2081 bfd_vma gp = MINUS_ONE;
2082 /* The place (section offset or address) of the storage unit being
2085 /* The value of GP used to create the relocatable object. */
2086 bfd_vma gp0 = MINUS_ONE;
2087 /* The offset into the global offset table at which the address of
2088 the relocation entry symbol, adjusted by the addend, resides
2089 during execution. */
2090 bfd_vma g = MINUS_ONE;
2091 /* The section in which the symbol referenced by the relocation is
2093 asection *sec = NULL;
2094 struct mips_elf_link_hash_entry *h = NULL;
2095 /* TRUE if the symbol referred to by this relocation is a local
2097 bfd_boolean local_p, was_local_p;
2098 /* TRUE if the symbol referred to by this relocation is "_gp_disp". */
2099 bfd_boolean gp_disp_p = FALSE;
2100 Elf_Internal_Shdr *symtab_hdr;
2102 unsigned long r_symndx;
2104 /* TRUE if overflow occurred during the calculation of the
2105 relocation value. */
2106 bfd_boolean overflowed_p;
2107 /* TRUE if this relocation refers to a MIPS16 function. */
2108 bfd_boolean target_is_16_bit_code_p = FALSE;
2110 /* Parse the relocation. */
2111 r_symndx = ELF_R_SYM (input_bfd, relocation->r_info);
2112 r_type = ELF_R_TYPE (input_bfd, relocation->r_info);
2113 p = (input_section->output_section->vma
2114 + input_section->output_offset
2115 + relocation->r_offset);
2117 /* Assume that there will be no overflow. */
2118 overflowed_p = FALSE;
2120 /* Figure out whether or not the symbol is local, and get the offset
2121 used in the array of hash table entries. */
2122 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2123 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
2124 local_sections, FALSE);
2125 was_local_p = local_p;
2126 if (! elf_bad_symtab (input_bfd))
2127 extsymoff = symtab_hdr->sh_info;
2130 /* The symbol table does not follow the rule that local symbols
2131 must come before globals. */
2135 /* Figure out the value of the symbol. */
2138 Elf_Internal_Sym *sym;
2140 sym = local_syms + r_symndx;
2141 sec = local_sections[r_symndx];
2143 symbol = sec->output_section->vma + sec->output_offset;
2144 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION
2145 || (sec->flags & SEC_MERGE))
2146 symbol += sym->st_value;
2147 if ((sec->flags & SEC_MERGE)
2148 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2150 addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend);
2152 addend += sec->output_section->vma + sec->output_offset;
2155 /* MIPS16 text labels should be treated as odd. */
2156 if (sym->st_other == STO_MIPS16)
2159 /* Record the name of this symbol, for our caller. */
2160 *namep = bfd_elf_string_from_elf_section (input_bfd,
2161 symtab_hdr->sh_link,
2164 *namep = bfd_section_name (input_bfd, sec);
2166 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
2170 /* For global symbols we look up the symbol in the hash-table. */
2171 h = ((struct mips_elf_link_hash_entry *)
2172 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
2173 /* Find the real hash-table entry for this symbol. */
2174 while (h->root.root.type == bfd_link_hash_indirect
2175 || h->root.root.type == bfd_link_hash_warning)
2176 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
2178 /* Record the name of this symbol, for our caller. */
2179 *namep = h->root.root.root.string;
2181 /* See if this is the special _gp_disp symbol. Note that such a
2182 symbol must always be a global symbol. */
2183 if (strcmp (h->root.root.root.string, "_gp_disp") == 0
2184 && ! NEWABI_P (input_bfd))
2186 /* Relocations against _gp_disp are permitted only with
2187 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
2188 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
2189 return bfd_reloc_notsupported;
2193 /* If this symbol is defined, calculate its address. Note that
2194 _gp_disp is a magic symbol, always implicitly defined by the
2195 linker, so it's inappropriate to check to see whether or not
2197 else if ((h->root.root.type == bfd_link_hash_defined
2198 || h->root.root.type == bfd_link_hash_defweak)
2199 && h->root.root.u.def.section)
2201 sec = h->root.root.u.def.section;
2202 if (sec->output_section)
2203 symbol = (h->root.root.u.def.value
2204 + sec->output_section->vma
2205 + sec->output_offset);
2207 symbol = h->root.root.u.def.value;
2209 else if (h->root.root.type == bfd_link_hash_undefweak)
2210 /* We allow relocations against undefined weak symbols, giving
2211 it the value zero, so that you can undefined weak functions
2212 and check to see if they exist by looking at their
2215 else if (info->shared
2216 && (!info->symbolic || info->allow_shlib_undefined)
2217 && !info->no_undefined
2218 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
2220 else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
2221 strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
2223 /* If this is a dynamic link, we should have created a
2224 _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
2225 in in _bfd_mips_elf_create_dynamic_sections.
2226 Otherwise, we should define the symbol with a value of 0.
2227 FIXME: It should probably get into the symbol table
2229 BFD_ASSERT (! info->shared);
2230 BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
2235 if (! ((*info->callbacks->undefined_symbol)
2236 (info, h->root.root.root.string, input_bfd,
2237 input_section, relocation->r_offset,
2238 (!info->shared || info->no_undefined
2239 || ELF_ST_VISIBILITY (h->root.other)))))
2240 return bfd_reloc_undefined;
2244 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
2247 /* If this is a 32- or 64-bit call to a 16-bit function with a stub, we
2248 need to redirect the call to the stub, unless we're already *in*
2250 if (r_type != R_MIPS16_26 && !info->relocateable
2251 && ((h != NULL && h->fn_stub != NULL)
2252 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
2253 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
2254 && !mips_elf_stub_section_p (input_bfd, input_section))
2256 /* This is a 32- or 64-bit call to a 16-bit function. We should
2257 have already noticed that we were going to need the
2260 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
2263 BFD_ASSERT (h->need_fn_stub);
2267 symbol = sec->output_section->vma + sec->output_offset;
2269 /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we
2270 need to redirect the call to the stub. */
2271 else if (r_type == R_MIPS16_26 && !info->relocateable
2273 && (h->call_stub != NULL || h->call_fp_stub != NULL)
2274 && !target_is_16_bit_code_p)
2276 /* If both call_stub and call_fp_stub are defined, we can figure
2277 out which one to use by seeing which one appears in the input
2279 if (h->call_stub != NULL && h->call_fp_stub != NULL)
2284 for (o = input_bfd->sections; o != NULL; o = o->next)
2286 if (strncmp (bfd_get_section_name (input_bfd, o),
2287 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
2289 sec = h->call_fp_stub;
2296 else if (h->call_stub != NULL)
2299 sec = h->call_fp_stub;
2301 BFD_ASSERT (sec->_raw_size > 0);
2302 symbol = sec->output_section->vma + sec->output_offset;
2305 /* Calls from 16-bit code to 32-bit code and vice versa require the
2306 special jalx instruction. */
2307 *require_jalxp = (!info->relocateable
2308 && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p)
2309 || ((r_type == R_MIPS_26) && target_is_16_bit_code_p)));
2311 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
2312 local_sections, TRUE);
2314 /* If we haven't already determined the GOT offset, or the GP value,
2315 and we're going to need it, get it now. */
2320 case R_MIPS_GOT_DISP:
2321 case R_MIPS_GOT_HI16:
2322 case R_MIPS_CALL_HI16:
2323 case R_MIPS_GOT_LO16:
2324 case R_MIPS_CALL_LO16:
2325 /* Find the index into the GOT where this value is located. */
2328 BFD_ASSERT (addend == 0);
2329 g = mips_elf_global_got_index (elf_hash_table (info)->dynobj,
2330 (struct elf_link_hash_entry *) h);
2331 if (! elf_hash_table(info)->dynamic_sections_created
2333 && (info->symbolic || h->root.dynindx == -1)
2334 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2336 /* This is a static link or a -Bsymbolic link. The
2337 symbol is defined locally, or was forced to be local.
2338 We must initialize this entry in the GOT. */
2339 bfd *tmpbfd = elf_hash_table (info)->dynobj;
2340 asection *sgot = mips_elf_got_section(tmpbfd);
2341 MIPS_ELF_PUT_WORD (tmpbfd, symbol + addend, sgot->contents + g);
2344 else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
2345 /* There's no need to create a local GOT entry here; the
2346 calculation for a local GOT16 entry does not involve G. */
2350 g = mips_elf_local_got_index (abfd, info, symbol + addend);
2352 return bfd_reloc_outofrange;
2355 /* Convert GOT indices to actual offsets. */
2356 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2362 case R_MIPS16_GPREL:
2363 case R_MIPS_GPREL16:
2364 case R_MIPS_GPREL32:
2365 case R_MIPS_LITERAL:
2366 gp0 = _bfd_get_gp_value (input_bfd);
2367 gp = _bfd_get_gp_value (abfd);
2374 /* Figure out what kind of relocation is being performed. */
2378 return bfd_reloc_continue;
2381 value = symbol + mips_elf_sign_extend (addend, 16);
2382 overflowed_p = mips_elf_overflow_p (value, 16);
2389 || (elf_hash_table (info)->dynamic_sections_created
2391 && ((h->root.elf_link_hash_flags
2392 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
2393 && ((h->root.elf_link_hash_flags
2394 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
2396 && (input_section->flags & SEC_ALLOC) != 0)
2398 /* If we're creating a shared library, or this relocation is
2399 against a symbol in a shared library, then we can't know
2400 where the symbol will end up. So, we create a relocation
2401 record in the output, and leave the job up to the dynamic
2404 if (!mips_elf_create_dynamic_relocation (abfd,
2412 return bfd_reloc_undefined;
2416 if (r_type != R_MIPS_REL32)
2417 value = symbol + addend;
2421 value &= howto->dst_mask;
2426 case R_MIPS_GNU_REL_LO16:
2427 value = symbol + addend - p;
2428 value &= howto->dst_mask;
2431 case R_MIPS_GNU_REL16_S2:
2432 value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
2433 overflowed_p = mips_elf_overflow_p (value, 18);
2434 value = (value >> 2) & howto->dst_mask;
2437 case R_MIPS_GNU_REL_HI16:
2438 /* Instead of subtracting 'p' here, we should be subtracting the
2439 equivalent value for the LO part of the reloc, since the value
2440 here is relative to that address. Because that's not easy to do,
2441 we adjust 'addend' in _bfd_mips_elf_relocate_section(). See also
2442 the comment there for more information. */
2443 value = mips_elf_high (addend + symbol - p);
2444 value &= howto->dst_mask;
2448 /* The calculation for R_MIPS16_26 is just the same as for an
2449 R_MIPS_26. It's only the storage of the relocated field into
2450 the output file that's different. That's handled in
2451 mips_elf_perform_relocation. So, we just fall through to the
2452 R_MIPS_26 case here. */
2455 value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
2457 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
2458 value &= howto->dst_mask;
2464 value = mips_elf_high (addend + symbol);
2465 value &= howto->dst_mask;
2469 value = mips_elf_high (addend + gp - p);
2470 overflowed_p = mips_elf_overflow_p (value, 16);
2476 value = (symbol + addend) & howto->dst_mask;
2479 value = addend + gp - p + 4;
2480 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
2481 for overflow. But, on, say, IRIX5, relocations against
2482 _gp_disp are normally generated from the .cpload
2483 pseudo-op. It generates code that normally looks like
2486 lui $gp,%hi(_gp_disp)
2487 addiu $gp,$gp,%lo(_gp_disp)
2490 Here $t9 holds the address of the function being called,
2491 as required by the MIPS ELF ABI. The R_MIPS_LO16
2492 relocation can easily overflow in this situation, but the
2493 R_MIPS_HI16 relocation will handle the overflow.
2494 Therefore, we consider this a bug in the MIPS ABI, and do
2495 not check for overflow here. */
2499 case R_MIPS_LITERAL:
2500 /* Because we don't merge literal sections, we can handle this
2501 just like R_MIPS_GPREL16. In the long run, we should merge
2502 shared literals, and then we will need to additional work
2507 case R_MIPS16_GPREL:
2508 /* The R_MIPS16_GPREL performs the same calculation as
2509 R_MIPS_GPREL16, but stores the relocated bits in a different
2510 order. We don't need to do anything special here; the
2511 differences are handled in mips_elf_perform_relocation. */
2512 case R_MIPS_GPREL16:
2513 /* Only sign-extend the addend if it was extracted from the
2514 instruction. If the addend was separate, leave it alone,
2515 otherwise we may lose significant bits. */
2516 if (howto->partial_inplace)
2517 addend = mips_elf_sign_extend (addend, 16);
2518 value = symbol + addend - gp;
2519 /* If the symbol was local, any earlier relocatable links will
2520 have adjusted its addend with the gp offset, so compensate
2521 for that now. Don't do it for symbols forced local in this
2522 link, though, since they won't have had the gp offset applied
2526 overflowed_p = mips_elf_overflow_p (value, 16);
2535 /* The special case is when the symbol is forced to be local. We
2536 need the full address in the GOT since no R_MIPS_LO16 relocation
2538 forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
2539 local_sections, FALSE);
2540 value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
2541 if (value == MINUS_ONE)
2542 return bfd_reloc_outofrange;
2544 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2546 overflowed_p = mips_elf_overflow_p (value, 16);
2552 case R_MIPS_GOT_DISP:
2554 overflowed_p = mips_elf_overflow_p (value, 16);
2557 case R_MIPS_GPREL32:
2558 value = (addend + symbol + gp0 - gp);
2560 value &= howto->dst_mask;
2564 value = mips_elf_sign_extend (addend, 16) + symbol - p;
2565 overflowed_p = mips_elf_overflow_p (value, 16);
2568 case R_MIPS_GOT_HI16:
2569 case R_MIPS_CALL_HI16:
2570 /* We're allowed to handle these two relocations identically.
2571 The dynamic linker is allowed to handle the CALL relocations
2572 differently by creating a lazy evaluation stub. */
2574 value = mips_elf_high (value);
2575 value &= howto->dst_mask;
2578 case R_MIPS_GOT_LO16:
2579 case R_MIPS_CALL_LO16:
2580 value = g & howto->dst_mask;
2583 case R_MIPS_GOT_PAGE:
2584 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
2585 if (value == MINUS_ONE)
2586 return bfd_reloc_outofrange;
2587 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2589 overflowed_p = mips_elf_overflow_p (value, 16);
2592 case R_MIPS_GOT_OFST:
2593 mips_elf_got_page (abfd, info, symbol + addend, &value);
2594 overflowed_p = mips_elf_overflow_p (value, 16);
2598 value = symbol - addend;
2599 value &= howto->dst_mask;
2603 value = mips_elf_higher (addend + symbol);
2604 value &= howto->dst_mask;
2607 case R_MIPS_HIGHEST:
2608 value = mips_elf_highest (addend + symbol);
2609 value &= howto->dst_mask;
2612 case R_MIPS_SCN_DISP:
2613 value = symbol + addend - sec->output_offset;
2614 value &= howto->dst_mask;
2619 /* Both of these may be ignored. R_MIPS_JALR is an optimization
2620 hint; we could improve performance by honoring that hint. */
2621 return bfd_reloc_continue;
2623 case R_MIPS_GNU_VTINHERIT:
2624 case R_MIPS_GNU_VTENTRY:
2625 /* We don't do anything with these at present. */
2626 return bfd_reloc_continue;
2629 /* An unrecognized relocation type. */
2630 return bfd_reloc_notsupported;
2633 /* Store the VALUE for our caller. */
2635 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
2638 /* Obtain the field relocated by RELOCATION. */
2641 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
2642 reloc_howto_type *howto;
2643 const Elf_Internal_Rela *relocation;
2648 bfd_byte *location = contents + relocation->r_offset;
2650 /* Obtain the bytes. */
2651 x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location);
2653 if ((ELF_R_TYPE (input_bfd, relocation->r_info) == R_MIPS16_26
2654 || ELF_R_TYPE (input_bfd, relocation->r_info) == R_MIPS16_GPREL)
2655 && bfd_little_endian (input_bfd))
2656 /* The two 16-bit words will be reversed on a little-endian system.
2657 See mips_elf_perform_relocation for more details. */
2658 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
2663 /* It has been determined that the result of the RELOCATION is the
2664 VALUE. Use HOWTO to place VALUE into the output file at the
2665 appropriate position. The SECTION is the section to which the
2666 relocation applies. If REQUIRE_JALX is TRUE, then the opcode used
2667 for the relocation must be either JAL or JALX, and it is
2668 unconditionally converted to JALX.
2670 Returns FALSE if anything goes wrong. */
2673 mips_elf_perform_relocation (info, howto, relocation, value, input_bfd,
2674 input_section, contents, require_jalx)
2675 struct bfd_link_info *info;
2676 reloc_howto_type *howto;
2677 const Elf_Internal_Rela *relocation;
2680 asection *input_section;
2682 bfd_boolean require_jalx;
2686 int r_type = ELF_R_TYPE (input_bfd, relocation->r_info);
2688 /* Figure out where the relocation is occurring. */
2689 location = contents + relocation->r_offset;
2691 /* Obtain the current value. */
2692 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
2694 /* Clear the field we are setting. */
2695 x &= ~howto->dst_mask;
2697 /* If this is the R_MIPS16_26 relocation, we must store the
2698 value in a funny way. */
2699 if (r_type == R_MIPS16_26)
2701 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
2702 Most mips16 instructions are 16 bits, but these instructions
2705 The format of these instructions is:
2707 +--------------+--------------------------------+
2708 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
2709 +--------------+--------------------------------+
2711 +-----------------------------------------------+
2713 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
2714 Note that the immediate value in the first word is swapped.
2716 When producing a relocateable object file, R_MIPS16_26 is
2717 handled mostly like R_MIPS_26. In particular, the addend is
2718 stored as a straight 26-bit value in a 32-bit instruction.
2719 (gas makes life simpler for itself by never adjusting a
2720 R_MIPS16_26 reloc to be against a section, so the addend is
2721 always zero). However, the 32 bit instruction is stored as 2
2722 16-bit values, rather than a single 32-bit value. In a
2723 big-endian file, the result is the same; in a little-endian
2724 file, the two 16-bit halves of the 32 bit value are swapped.
2725 This is so that a disassembler can recognize the jal
2728 When doing a final link, R_MIPS16_26 is treated as a 32 bit
2729 instruction stored as two 16-bit values. The addend A is the
2730 contents of the targ26 field. The calculation is the same as
2731 R_MIPS_26. When storing the calculated value, reorder the
2732 immediate value as shown above, and don't forget to store the
2733 value as two 16-bit values.
2735 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
2739 +--------+----------------------+
2743 +--------+----------------------+
2746 +----------+------+-------------+
2750 +----------+--------------------+
2751 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
2752 ((sub1 << 16) | sub2)).
2754 When producing a relocateable object file, the calculation is
2755 (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
2756 When producing a fully linked file, the calculation is
2757 let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
2758 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
2760 if (!info->relocateable)
2761 /* Shuffle the bits according to the formula above. */
2762 value = (((value & 0x1f0000) << 5)
2763 | ((value & 0x3e00000) >> 5)
2764 | (value & 0xffff));
2766 else if (r_type == R_MIPS16_GPREL)
2768 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
2769 mode. A typical instruction will have a format like this:
2771 +--------------+--------------------------------+
2772 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
2773 +--------------+--------------------------------+
2774 ! Major ! rx ! ry ! Imm 4:0 !
2775 +--------------+--------------------------------+
2777 EXTEND is the five bit value 11110. Major is the instruction
2780 This is handled exactly like R_MIPS_GPREL16, except that the
2781 addend is retrieved and stored as shown in this diagram; that
2782 is, the Imm fields above replace the V-rel16 field.
2784 All we need to do here is shuffle the bits appropriately. As
2785 above, the two 16-bit halves must be swapped on a
2786 little-endian system. */
2787 value = (((value & 0x7e0) << 16)
2788 | ((value & 0xf800) << 5)
2792 /* Set the field. */
2793 x |= (value & howto->dst_mask);
2795 /* If required, turn JAL into JALX. */
2799 bfd_vma opcode = x >> 26;
2800 bfd_vma jalx_opcode;
2802 /* Check to see if the opcode is already JAL or JALX. */
2803 if (r_type == R_MIPS16_26)
2805 ok = ((opcode == 0x6) || (opcode == 0x7));
2810 ok = ((opcode == 0x3) || (opcode == 0x1d));
2814 /* If the opcode is not JAL or JALX, there's a problem. */
2817 (*_bfd_error_handler)
2818 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
2819 bfd_archive_filename (input_bfd),
2820 input_section->name,
2821 (unsigned long) relocation->r_offset);
2822 bfd_set_error (bfd_error_bad_value);
2826 /* Make this the JALX opcode. */
2827 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
2830 /* Swap the high- and low-order 16 bits on little-endian systems
2831 when doing a MIPS16 relocation. */
2832 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
2833 && bfd_little_endian (input_bfd))
2834 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
2836 /* Put the value into the output. */
2837 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
2841 /* Returns TRUE if SECTION is a MIPS16 stub section. */
2844 mips_elf_stub_section_p (abfd, section)
2845 bfd *abfd ATTRIBUTE_UNUSED;
2848 const char *name = bfd_get_section_name (abfd, section);
2850 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
2851 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
2852 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
2855 /* Add room for N relocations to the .rel.dyn section in ABFD. */
2858 mips_elf_allocate_dynamic_relocations (abfd, n)
2864 s = bfd_get_section_by_name (abfd, ".rel.dyn");
2865 BFD_ASSERT (s != NULL);
2867 if (s->_raw_size == 0)
2869 /* Make room for a null element. */
2870 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
2873 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
2876 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
2877 is the original relocation, which is now being transformed into a
2878 dynamic relocation. The ADDENDP is adjusted if necessary; the
2879 caller should store the result in place of the original addend. */
2882 mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
2883 symbol, addendp, input_section)
2885 struct bfd_link_info *info;
2886 const Elf_Internal_Rela *rel;
2887 struct mips_elf_link_hash_entry *h;
2891 asection *input_section;
2893 Elf_Internal_Rela outrel[3];
2899 r_type = ELF_R_TYPE (output_bfd, rel->r_info);
2900 dynobj = elf_hash_table (info)->dynobj;
2901 sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn");
2902 BFD_ASSERT (sreloc != NULL);
2903 BFD_ASSERT (sreloc->contents != NULL);
2904 BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd)
2905 < sreloc->_raw_size);
2908 outrel[0].r_offset =
2909 _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset);
2910 outrel[1].r_offset =
2911 _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset);
2912 outrel[2].r_offset =
2913 _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset);
2916 /* We begin by assuming that the offset for the dynamic relocation
2917 is the same as for the original relocation. We'll adjust this
2918 later to reflect the correct output offsets. */
2919 if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS)
2921 outrel[1].r_offset = rel[1].r_offset;
2922 outrel[2].r_offset = rel[2].r_offset;
2926 /* Except that in a stab section things are more complex.
2927 Because we compress stab information, the offset given in the
2928 relocation may not be the one we want; we must let the stabs
2929 machinery tell us the offset. */
2930 outrel[1].r_offset = outrel[0].r_offset;
2931 outrel[2].r_offset = outrel[0].r_offset;
2932 /* If we didn't need the relocation at all, this value will be
2934 if (outrel[0].r_offset == (bfd_vma) -1)
2939 if (outrel[0].r_offset == (bfd_vma) -1)
2941 /* FIXME: For -2 runtime relocation needs to be skipped, but
2942 properly resolved statically and installed. */
2943 BFD_ASSERT (outrel[0].r_offset != (bfd_vma) -2);
2945 /* If we've decided to skip this relocation, just output an empty
2946 record. Note that R_MIPS_NONE == 0, so that this call to memset
2947 is a way of setting R_TYPE to R_MIPS_NONE. */
2949 memset (outrel, 0, sizeof (Elf_Internal_Rela) * 3);
2953 bfd_vma section_offset;
2955 /* We must now calculate the dynamic symbol table index to use
2956 in the relocation. */
2958 && (! info->symbolic || (h->root.elf_link_hash_flags
2959 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2961 indx = h->root.dynindx;
2962 /* h->root.dynindx may be -1 if this symbol was marked to
2969 if (sec != NULL && bfd_is_abs_section (sec))
2971 else if (sec == NULL || sec->owner == NULL)
2973 bfd_set_error (bfd_error_bad_value);
2978 indx = elf_section_data (sec->output_section)->dynindx;
2983 /* Figure out how far the target of the relocation is from
2984 the beginning of its section. */
2985 section_offset = symbol - sec->output_section->vma;
2986 /* The relocation we're building is section-relative.
2987 Therefore, the original addend must be adjusted by the
2989 *addendp += section_offset;
2990 /* Now, the relocation is just against the section. */
2991 symbol = sec->output_section->vma;
2994 /* If the relocation was previously an absolute relocation and
2995 this symbol will not be referred to by the relocation, we must
2996 adjust it by the value we give it in the dynamic symbol table.
2997 Otherwise leave the job up to the dynamic linker. */
2998 if (!indx && r_type != R_MIPS_REL32)
3001 /* The relocation is always an REL32 relocation because we don't
3002 know where the shared library will wind up at load-time. */
3003 outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx,
3005 outrel[1].r_info = ELF_R_INFO (output_bfd, (unsigned long) 0,
3006 ABI_64_P (output_bfd)
3009 outrel[2].r_info = ELF_R_INFO (output_bfd, (unsigned long) 0,
3012 /* Adjust the output offset of the relocation to reference the
3013 correct location in the output file. */
3014 outrel[0].r_offset += (input_section->output_section->vma
3015 + input_section->output_offset);
3016 outrel[1].r_offset += (input_section->output_section->vma
3017 + input_section->output_offset);
3018 outrel[2].r_offset += (input_section->output_section->vma
3019 + input_section->output_offset);
3022 /* Put the relocation back out. We have to use the special
3023 relocation outputter in the 64-bit case since the 64-bit
3024 relocation format is non-standard. */
3025 if (ABI_64_P (output_bfd))
3027 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
3028 (output_bfd, &outrel[0],
3030 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
3033 bfd_elf32_swap_reloc_out
3034 (output_bfd, &outrel[0],
3035 (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel)));
3037 /* Record the index of the first relocation referencing H. This
3038 information is later emitted in the .msym section. */
3040 && (h->min_dyn_reloc_index == 0
3041 || sreloc->reloc_count < h->min_dyn_reloc_index))
3042 h->min_dyn_reloc_index = sreloc->reloc_count;
3044 /* We've now added another relocation. */
3045 ++sreloc->reloc_count;
3047 /* Make sure the output section is writable. The dynamic linker
3048 will be writing to it. */
3049 elf_section_data (input_section->output_section)->this_hdr.sh_flags
3052 /* On IRIX5, make an entry of compact relocation info. */
3053 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
3055 asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
3060 Elf32_crinfo cptrel;
3062 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
3063 cptrel.vaddr = (rel->r_offset
3064 + input_section->output_section->vma
3065 + input_section->output_offset);
3066 if (r_type == R_MIPS_REL32)
3067 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
3069 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
3070 mips_elf_set_cr_dist2to (cptrel, 0);
3071 cptrel.konst = *addendp;
3073 cr = (scpt->contents
3074 + sizeof (Elf32_External_compact_rel));
3075 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
3076 ((Elf32_External_crinfo *) cr
3077 + scpt->reloc_count));
3078 ++scpt->reloc_count;
3085 /* Return the MACH for a MIPS e_flags value. */
3088 _bfd_elf_mips_mach (flags)
3091 switch (flags & EF_MIPS_MACH)
3093 case E_MIPS_MACH_3900:
3094 return bfd_mach_mips3900;
3096 case E_MIPS_MACH_4010:
3097 return bfd_mach_mips4010;
3099 case E_MIPS_MACH_4100:
3100 return bfd_mach_mips4100;
3102 case E_MIPS_MACH_4111:
3103 return bfd_mach_mips4111;
3105 case E_MIPS_MACH_4120:
3106 return bfd_mach_mips4120;
3108 case E_MIPS_MACH_4650:
3109 return bfd_mach_mips4650;
3111 case E_MIPS_MACH_5400:
3112 return bfd_mach_mips5400;
3114 case E_MIPS_MACH_5500:
3115 return bfd_mach_mips5500;
3117 case E_MIPS_MACH_SB1:
3118 return bfd_mach_mips_sb1;
3121 switch (flags & EF_MIPS_ARCH)
3125 return bfd_mach_mips3000;
3129 return bfd_mach_mips6000;
3133 return bfd_mach_mips4000;
3137 return bfd_mach_mips8000;
3141 return bfd_mach_mips5;
3144 case E_MIPS_ARCH_32:
3145 return bfd_mach_mipsisa32;
3148 case E_MIPS_ARCH_64:
3149 return bfd_mach_mipsisa64;
3152 case E_MIPS_ARCH_32R2:
3153 return bfd_mach_mipsisa32r2;
3161 /* Return printable name for ABI. */
3163 static INLINE char *
3164 elf_mips_abi_name (abfd)
3169 flags = elf_elfheader (abfd)->e_flags;
3170 switch (flags & EF_MIPS_ABI)
3173 if (ABI_N32_P (abfd))
3175 else if (ABI_64_P (abfd))
3179 case E_MIPS_ABI_O32:
3181 case E_MIPS_ABI_O64:
3183 case E_MIPS_ABI_EABI32:
3185 case E_MIPS_ABI_EABI64:
3188 return "unknown abi";
3192 /* MIPS ELF uses two common sections. One is the usual one, and the
3193 other is for small objects. All the small objects are kept
3194 together, and then referenced via the gp pointer, which yields
3195 faster assembler code. This is what we use for the small common
3196 section. This approach is copied from ecoff.c. */
3197 static asection mips_elf_scom_section;
3198 static asymbol mips_elf_scom_symbol;
3199 static asymbol *mips_elf_scom_symbol_ptr;
3201 /* MIPS ELF also uses an acommon section, which represents an
3202 allocated common symbol which may be overridden by a
3203 definition in a shared library. */
3204 static asection mips_elf_acom_section;
3205 static asymbol mips_elf_acom_symbol;
3206 static asymbol *mips_elf_acom_symbol_ptr;
3208 /* Handle the special MIPS section numbers that a symbol may use.
3209 This is used for both the 32-bit and the 64-bit ABI. */
3212 _bfd_mips_elf_symbol_processing (abfd, asym)
3216 elf_symbol_type *elfsym;
3218 elfsym = (elf_symbol_type *) asym;
3219 switch (elfsym->internal_elf_sym.st_shndx)
3221 case SHN_MIPS_ACOMMON:
3222 /* This section is used in a dynamically linked executable file.
3223 It is an allocated common section. The dynamic linker can
3224 either resolve these symbols to something in a shared
3225 library, or it can just leave them here. For our purposes,
3226 we can consider these symbols to be in a new section. */
3227 if (mips_elf_acom_section.name == NULL)
3229 /* Initialize the acommon section. */
3230 mips_elf_acom_section.name = ".acommon";
3231 mips_elf_acom_section.flags = SEC_ALLOC;
3232 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3233 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3234 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3235 mips_elf_acom_symbol.name = ".acommon";
3236 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3237 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3238 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3240 asym->section = &mips_elf_acom_section;
3244 /* Common symbols less than the GP size are automatically
3245 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3246 if (asym->value > elf_gp_size (abfd)
3247 || IRIX_COMPAT (abfd) == ict_irix6)
3250 case SHN_MIPS_SCOMMON:
3251 if (mips_elf_scom_section.name == NULL)
3253 /* Initialize the small common section. */
3254 mips_elf_scom_section.name = ".scommon";
3255 mips_elf_scom_section.flags = SEC_IS_COMMON;
3256 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3257 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3258 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3259 mips_elf_scom_symbol.name = ".scommon";
3260 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3261 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3262 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3264 asym->section = &mips_elf_scom_section;
3265 asym->value = elfsym->internal_elf_sym.st_size;
3268 case SHN_MIPS_SUNDEFINED:
3269 asym->section = bfd_und_section_ptr;
3272 #if 0 /* for SGI_COMPAT */
3274 asym->section = mips_elf_text_section_ptr;
3278 asym->section = mips_elf_data_section_ptr;
3284 /* Work over a section just before writing it out. This routine is
3285 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
3286 sections that need the SHF_MIPS_GPREL flag by name; there has to be
3290 _bfd_mips_elf_section_processing (abfd, hdr)
3292 Elf_Internal_Shdr *hdr;
3294 if (hdr->sh_type == SHT_MIPS_REGINFO
3295 && hdr->sh_size > 0)
3299 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
3300 BFD_ASSERT (hdr->contents == NULL);
3303 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
3306 H_PUT_32 (abfd, elf_gp (abfd), buf);
3307 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3311 if (hdr->sh_type == SHT_MIPS_OPTIONS
3312 && hdr->bfd_section != NULL
3313 && elf_section_data (hdr->bfd_section) != NULL
3314 && elf_section_data (hdr->bfd_section)->tdata != NULL)
3316 bfd_byte *contents, *l, *lend;
3318 /* We stored the section contents in the elf_section_data tdata
3319 field in the set_section_contents routine. We save the
3320 section contents so that we don't have to read them again.
3321 At this point we know that elf_gp is set, so we can look
3322 through the section contents to see if there is an
3323 ODK_REGINFO structure. */
3325 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
3327 lend = contents + hdr->sh_size;
3328 while (l + sizeof (Elf_External_Options) <= lend)
3330 Elf_Internal_Options intopt;
3332 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3334 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3341 + sizeof (Elf_External_Options)
3342 + (sizeof (Elf64_External_RegInfo) - 8)),
3345 H_PUT_64 (abfd, elf_gp (abfd), buf);
3346 if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8)
3349 else if (intopt.kind == ODK_REGINFO)
3356 + sizeof (Elf_External_Options)
3357 + (sizeof (Elf32_External_RegInfo) - 4)),
3360 H_PUT_32 (abfd, elf_gp (abfd), buf);
3361 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3368 if (hdr->bfd_section != NULL)
3370 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3372 if (strcmp (name, ".sdata") == 0
3373 || strcmp (name, ".lit8") == 0
3374 || strcmp (name, ".lit4") == 0)
3376 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3377 hdr->sh_type = SHT_PROGBITS;
3379 else if (strcmp (name, ".sbss") == 0)
3381 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3382 hdr->sh_type = SHT_NOBITS;
3384 else if (strcmp (name, ".srdata") == 0)
3386 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3387 hdr->sh_type = SHT_PROGBITS;
3389 else if (strcmp (name, ".compact_rel") == 0)
3392 hdr->sh_type = SHT_PROGBITS;
3394 else if (strcmp (name, ".rtproc") == 0)
3396 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3398 unsigned int adjust;
3400 adjust = hdr->sh_size % hdr->sh_addralign;
3402 hdr->sh_size += hdr->sh_addralign - adjust;
3410 /* Handle a MIPS specific section when reading an object file. This
3411 is called when elfcode.h finds a section with an unknown type.
3412 This routine supports both the 32-bit and 64-bit ELF ABI.
3414 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
3418 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
3420 Elf_Internal_Shdr *hdr;
3425 /* There ought to be a place to keep ELF backend specific flags, but
3426 at the moment there isn't one. We just keep track of the
3427 sections by their name, instead. Fortunately, the ABI gives
3428 suggested names for all the MIPS specific sections, so we will
3429 probably get away with this. */
3430 switch (hdr->sh_type)
3432 case SHT_MIPS_LIBLIST:
3433 if (strcmp (name, ".liblist") != 0)
3437 if (strcmp (name, ".msym") != 0)
3440 case SHT_MIPS_CONFLICT:
3441 if (strcmp (name, ".conflict") != 0)
3444 case SHT_MIPS_GPTAB:
3445 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
3448 case SHT_MIPS_UCODE:
3449 if (strcmp (name, ".ucode") != 0)
3452 case SHT_MIPS_DEBUG:
3453 if (strcmp (name, ".mdebug") != 0)
3455 flags = SEC_DEBUGGING;
3457 case SHT_MIPS_REGINFO:
3458 if (strcmp (name, ".reginfo") != 0
3459 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
3461 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
3463 case SHT_MIPS_IFACE:
3464 if (strcmp (name, ".MIPS.interfaces") != 0)
3467 case SHT_MIPS_CONTENT:
3468 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
3471 case SHT_MIPS_OPTIONS:
3472 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
3475 case SHT_MIPS_DWARF:
3476 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
3479 case SHT_MIPS_SYMBOL_LIB:
3480 if (strcmp (name, ".MIPS.symlib") != 0)
3483 case SHT_MIPS_EVENTS:
3484 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
3485 && strncmp (name, ".MIPS.post_rel",
3486 sizeof ".MIPS.post_rel" - 1) != 0)
3493 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
3498 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
3499 (bfd_get_section_flags (abfd,
3505 /* FIXME: We should record sh_info for a .gptab section. */
3507 /* For a .reginfo section, set the gp value in the tdata information
3508 from the contents of this section. We need the gp value while
3509 processing relocs, so we just get it now. The .reginfo section
3510 is not used in the 64-bit MIPS ELF ABI. */
3511 if (hdr->sh_type == SHT_MIPS_REGINFO)
3513 Elf32_External_RegInfo ext;
3516 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
3518 (bfd_size_type) sizeof ext))
3520 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
3521 elf_gp (abfd) = s.ri_gp_value;
3524 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
3525 set the gp value based on what we find. We may see both
3526 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
3527 they should agree. */
3528 if (hdr->sh_type == SHT_MIPS_OPTIONS)
3530 bfd_byte *contents, *l, *lend;
3532 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
3533 if (contents == NULL)
3535 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
3536 (file_ptr) 0, hdr->sh_size))
3542 lend = contents + hdr->sh_size;
3543 while (l + sizeof (Elf_External_Options) <= lend)
3545 Elf_Internal_Options intopt;
3547 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3549 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3551 Elf64_Internal_RegInfo intreg;
3553 bfd_mips_elf64_swap_reginfo_in
3555 ((Elf64_External_RegInfo *)
3556 (l + sizeof (Elf_External_Options))),
3558 elf_gp (abfd) = intreg.ri_gp_value;
3560 else if (intopt.kind == ODK_REGINFO)
3562 Elf32_RegInfo intreg;
3564 bfd_mips_elf32_swap_reginfo_in
3566 ((Elf32_External_RegInfo *)
3567 (l + sizeof (Elf_External_Options))),
3569 elf_gp (abfd) = intreg.ri_gp_value;
3579 /* Set the correct type for a MIPS ELF section. We do this by the
3580 section name, which is a hack, but ought to work. This routine is
3581 used by both the 32-bit and the 64-bit ABI. */
3584 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
3586 Elf_Internal_Shdr *hdr;
3589 register const char *name;
3591 name = bfd_get_section_name (abfd, sec);
3593 if (strcmp (name, ".liblist") == 0)
3595 hdr->sh_type = SHT_MIPS_LIBLIST;
3596 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
3597 /* The sh_link field is set in final_write_processing. */
3599 else if (strcmp (name, ".conflict") == 0)
3600 hdr->sh_type = SHT_MIPS_CONFLICT;
3601 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
3603 hdr->sh_type = SHT_MIPS_GPTAB;
3604 hdr->sh_entsize = sizeof (Elf32_External_gptab);
3605 /* The sh_info field is set in final_write_processing. */
3607 else if (strcmp (name, ".ucode") == 0)
3608 hdr->sh_type = SHT_MIPS_UCODE;
3609 else if (strcmp (name, ".mdebug") == 0)
3611 hdr->sh_type = SHT_MIPS_DEBUG;
3612 /* In a shared object on IRIX 5.3, the .mdebug section has an
3613 entsize of 0. FIXME: Does this matter? */
3614 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
3615 hdr->sh_entsize = 0;
3617 hdr->sh_entsize = 1;
3619 else if (strcmp (name, ".reginfo") == 0)
3621 hdr->sh_type = SHT_MIPS_REGINFO;
3622 /* In a shared object on IRIX 5.3, the .reginfo section has an
3623 entsize of 0x18. FIXME: Does this matter? */
3624 if (SGI_COMPAT (abfd))
3626 if ((abfd->flags & DYNAMIC) != 0)
3627 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3629 hdr->sh_entsize = 1;
3632 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3634 else if (SGI_COMPAT (abfd)
3635 && (strcmp (name, ".hash") == 0
3636 || strcmp (name, ".dynamic") == 0
3637 || strcmp (name, ".dynstr") == 0))
3639 if (SGI_COMPAT (abfd))
3640 hdr->sh_entsize = 0;
3642 /* This isn't how the IRIX6 linker behaves. */
3643 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
3646 else if (strcmp (name, ".got") == 0
3647 || strcmp (name, ".srdata") == 0
3648 || strcmp (name, ".sdata") == 0
3649 || strcmp (name, ".sbss") == 0
3650 || strcmp (name, ".lit4") == 0
3651 || strcmp (name, ".lit8") == 0)
3652 hdr->sh_flags |= SHF_MIPS_GPREL;
3653 else if (strcmp (name, ".MIPS.interfaces") == 0)
3655 hdr->sh_type = SHT_MIPS_IFACE;
3656 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3658 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
3660 hdr->sh_type = SHT_MIPS_CONTENT;
3661 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3662 /* The sh_info field is set in final_write_processing. */
3664 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3666 hdr->sh_type = SHT_MIPS_OPTIONS;
3667 hdr->sh_entsize = 1;
3668 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3670 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
3671 hdr->sh_type = SHT_MIPS_DWARF;
3672 else if (strcmp (name, ".MIPS.symlib") == 0)
3674 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
3675 /* The sh_link and sh_info fields are set in
3676 final_write_processing. */
3678 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
3679 || strncmp (name, ".MIPS.post_rel",
3680 sizeof ".MIPS.post_rel" - 1) == 0)
3682 hdr->sh_type = SHT_MIPS_EVENTS;
3683 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3684 /* The sh_link field is set in final_write_processing. */
3686 else if (strcmp (name, ".msym") == 0)
3688 hdr->sh_type = SHT_MIPS_MSYM;
3689 hdr->sh_flags |= SHF_ALLOC;
3690 hdr->sh_entsize = 8;
3693 /* The generic elf_fake_sections will set up REL_HDR using the
3694 default kind of relocations. But, we may actually need both
3695 kinds of relocations, so we set up the second header here.
3697 This is not necessary for the O32 ABI since that only uses Elf32_Rel
3698 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
3699 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
3700 of the resulting empty .rela.<section> sections starts with
3701 sh_offset == object size, and ld doesn't allow that. While the check
3702 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
3703 avoided by not emitting those useless sections in the first place. */
3704 if (! SGI_COMPAT (abfd) && ! NEWABI_P(abfd)
3705 && (sec->flags & SEC_RELOC) != 0)
3707 struct bfd_elf_section_data *esd;
3708 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
3710 esd = elf_section_data (sec);
3711 BFD_ASSERT (esd->rel_hdr2 == NULL);
3712 esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
3715 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
3716 !elf_section_data (sec)->use_rela_p);
3722 /* Given a BFD section, try to locate the corresponding ELF section
3723 index. This is used by both the 32-bit and the 64-bit ABI.
3724 Actually, it's not clear to me that the 64-bit ABI supports these,
3725 but for non-PIC objects we will certainly want support for at least
3726 the .scommon section. */
3729 _bfd_mips_elf_section_from_bfd_section (abfd, sec, retval)
3730 bfd *abfd ATTRIBUTE_UNUSED;
3734 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3736 *retval = SHN_MIPS_SCOMMON;
3739 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
3741 *retval = SHN_MIPS_ACOMMON;
3747 /* Hook called by the linker routine which adds symbols from an object
3748 file. We must handle the special MIPS section numbers here. */
3751 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
3753 struct bfd_link_info *info;
3754 const Elf_Internal_Sym *sym;
3756 flagword *flagsp ATTRIBUTE_UNUSED;
3760 if (SGI_COMPAT (abfd)
3761 && (abfd->flags & DYNAMIC) != 0
3762 && strcmp (*namep, "_rld_new_interface") == 0)
3764 /* Skip IRIX5 rld entry name. */
3769 switch (sym->st_shndx)
3772 /* Common symbols less than the GP size are automatically
3773 treated as SHN_MIPS_SCOMMON symbols. */
3774 if (sym->st_size > elf_gp_size (abfd)
3775 || IRIX_COMPAT (abfd) == ict_irix6)
3778 case SHN_MIPS_SCOMMON:
3779 *secp = bfd_make_section_old_way (abfd, ".scommon");
3780 (*secp)->flags |= SEC_IS_COMMON;
3781 *valp = sym->st_size;
3785 /* This section is used in a shared object. */
3786 if (elf_tdata (abfd)->elf_text_section == NULL)
3788 asymbol *elf_text_symbol;
3789 asection *elf_text_section;
3790 bfd_size_type amt = sizeof (asection);
3792 elf_text_section = bfd_zalloc (abfd, amt);
3793 if (elf_text_section == NULL)
3796 amt = sizeof (asymbol);
3797 elf_text_symbol = bfd_zalloc (abfd, amt);
3798 if (elf_text_symbol == NULL)
3801 /* Initialize the section. */
3803 elf_tdata (abfd)->elf_text_section = elf_text_section;
3804 elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
3806 elf_text_section->symbol = elf_text_symbol;
3807 elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
3809 elf_text_section->name = ".text";
3810 elf_text_section->flags = SEC_NO_FLAGS;
3811 elf_text_section->output_section = NULL;
3812 elf_text_section->owner = abfd;
3813 elf_text_symbol->name = ".text";
3814 elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3815 elf_text_symbol->section = elf_text_section;
3817 /* This code used to do *secp = bfd_und_section_ptr if
3818 info->shared. I don't know why, and that doesn't make sense,
3819 so I took it out. */
3820 *secp = elf_tdata (abfd)->elf_text_section;
3823 case SHN_MIPS_ACOMMON:
3824 /* Fall through. XXX Can we treat this as allocated data? */
3826 /* This section is used in a shared object. */
3827 if (elf_tdata (abfd)->elf_data_section == NULL)
3829 asymbol *elf_data_symbol;
3830 asection *elf_data_section;
3831 bfd_size_type amt = sizeof (asection);
3833 elf_data_section = bfd_zalloc (abfd, amt);
3834 if (elf_data_section == NULL)
3837 amt = sizeof (asymbol);
3838 elf_data_symbol = bfd_zalloc (abfd, amt);
3839 if (elf_data_symbol == NULL)
3842 /* Initialize the section. */
3844 elf_tdata (abfd)->elf_data_section = elf_data_section;
3845 elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
3847 elf_data_section->symbol = elf_data_symbol;
3848 elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
3850 elf_data_section->name = ".data";
3851 elf_data_section->flags = SEC_NO_FLAGS;
3852 elf_data_section->output_section = NULL;
3853 elf_data_section->owner = abfd;
3854 elf_data_symbol->name = ".data";
3855 elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3856 elf_data_symbol->section = elf_data_section;
3858 /* This code used to do *secp = bfd_und_section_ptr if
3859 info->shared. I don't know why, and that doesn't make sense,
3860 so I took it out. */
3861 *secp = elf_tdata (abfd)->elf_data_section;
3864 case SHN_MIPS_SUNDEFINED:
3865 *secp = bfd_und_section_ptr;
3869 if (SGI_COMPAT (abfd)
3871 && info->hash->creator == abfd->xvec
3872 && strcmp (*namep, "__rld_obj_head") == 0)
3874 struct elf_link_hash_entry *h;
3875 struct bfd_link_hash_entry *bh;
3877 /* Mark __rld_obj_head as dynamic. */
3879 if (! (_bfd_generic_link_add_one_symbol
3880 (info, abfd, *namep, BSF_GLOBAL, *secp,
3881 (bfd_vma) *valp, (const char *) NULL, FALSE,
3882 get_elf_backend_data (abfd)->collect, &bh)))
3885 h = (struct elf_link_hash_entry *) bh;
3886 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
3887 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3888 h->type = STT_OBJECT;
3890 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
3893 mips_elf_hash_table (info)->use_rld_obj_head = TRUE;
3896 /* If this is a mips16 text symbol, add 1 to the value to make it
3897 odd. This will cause something like .word SYM to come up with
3898 the right value when it is loaded into the PC. */
3899 if (sym->st_other == STO_MIPS16)
3905 /* This hook function is called before the linker writes out a global
3906 symbol. We mark symbols as small common if appropriate. This is
3907 also where we undo the increment of the value for a mips16 symbol. */
3910 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
3911 bfd *abfd ATTRIBUTE_UNUSED;
3912 struct bfd_link_info *info ATTRIBUTE_UNUSED;
3913 const char *name ATTRIBUTE_UNUSED;
3914 Elf_Internal_Sym *sym;
3915 asection *input_sec;
3917 /* If we see a common symbol, which implies a relocatable link, then
3918 if a symbol was small common in an input file, mark it as small
3919 common in the output file. */
3920 if (sym->st_shndx == SHN_COMMON
3921 && strcmp (input_sec->name, ".scommon") == 0)
3922 sym->st_shndx = SHN_MIPS_SCOMMON;
3924 if (sym->st_other == STO_MIPS16
3925 && (sym->st_value & 1) != 0)
3931 /* Functions for the dynamic linker. */
3933 /* Create dynamic sections when linking against a dynamic object. */
3936 _bfd_mips_elf_create_dynamic_sections (abfd, info)
3938 struct bfd_link_info *info;
3940 struct elf_link_hash_entry *h;
3941 struct bfd_link_hash_entry *bh;
3943 register asection *s;
3944 const char * const *namep;
3946 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3947 | SEC_LINKER_CREATED | SEC_READONLY);
3949 /* Mips ABI requests the .dynamic section to be read only. */
3950 s = bfd_get_section_by_name (abfd, ".dynamic");
3953 if (! bfd_set_section_flags (abfd, s, flags))
3957 /* We need to create .got section. */
3958 if (! mips_elf_create_got_section (abfd, info))
3961 /* Create the .msym section on IRIX6. It is used by the dynamic
3962 linker to speed up dynamic relocations, and to avoid computing
3963 the ELF hash for symbols. */
3964 if (IRIX_COMPAT (abfd) == ict_irix6
3965 && !mips_elf_create_msym_section (abfd))
3968 /* Create .stub section. */
3969 if (bfd_get_section_by_name (abfd,
3970 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
3972 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
3974 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
3975 || ! bfd_set_section_alignment (abfd, s,
3976 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
3980 if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
3982 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
3984 s = bfd_make_section (abfd, ".rld_map");
3986 || ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY)
3987 || ! bfd_set_section_alignment (abfd, s,
3988 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
3992 /* On IRIX5, we adjust add some additional symbols and change the
3993 alignments of several sections. There is no ABI documentation
3994 indicating that this is necessary on IRIX6, nor any evidence that
3995 the linker takes such action. */
3996 if (IRIX_COMPAT (abfd) == ict_irix5)
3998 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
4001 if (! (_bfd_generic_link_add_one_symbol
4002 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
4003 (bfd_vma) 0, (const char *) NULL, FALSE,
4004 get_elf_backend_data (abfd)->collect, &bh)))
4007 h = (struct elf_link_hash_entry *) bh;
4008 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4009 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4010 h->type = STT_SECTION;
4012 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4016 /* We need to create a .compact_rel section. */
4017 if (SGI_COMPAT (abfd))
4019 if (!mips_elf_create_compact_rel_section (abfd, info))
4023 /* Change alignments of some sections. */
4024 s = bfd_get_section_by_name (abfd, ".hash");
4026 bfd_set_section_alignment (abfd, s, 4);
4027 s = bfd_get_section_by_name (abfd, ".dynsym");
4029 bfd_set_section_alignment (abfd, s, 4);
4030 s = bfd_get_section_by_name (abfd, ".dynstr");
4032 bfd_set_section_alignment (abfd, s, 4);
4033 s = bfd_get_section_by_name (abfd, ".reginfo");
4035 bfd_set_section_alignment (abfd, s, 4);
4036 s = bfd_get_section_by_name (abfd, ".dynamic");
4038 bfd_set_section_alignment (abfd, s, 4);
4045 name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING";
4047 if (!(_bfd_generic_link_add_one_symbol
4048 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr,
4049 (bfd_vma) 0, (const char *) NULL, FALSE,
4050 get_elf_backend_data (abfd)->collect, &bh)))
4053 h = (struct elf_link_hash_entry *) bh;
4054 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4055 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4056 h->type = STT_SECTION;
4058 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4061 if (! mips_elf_hash_table (info)->use_rld_obj_head)
4063 /* __rld_map is a four byte word located in the .data section
4064 and is filled in by the rtld to contain a pointer to
4065 the _r_debug structure. Its symbol value will be set in
4066 _bfd_mips_elf_finish_dynamic_symbol. */
4067 s = bfd_get_section_by_name (abfd, ".rld_map");
4068 BFD_ASSERT (s != NULL);
4070 name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP";
4072 if (!(_bfd_generic_link_add_one_symbol
4073 (info, abfd, name, BSF_GLOBAL, s,
4074 (bfd_vma) 0, (const char *) NULL, FALSE,
4075 get_elf_backend_data (abfd)->collect, &bh)))
4078 h = (struct elf_link_hash_entry *) bh;
4079 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4080 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4081 h->type = STT_OBJECT;
4083 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4091 /* Look through the relocs for a section during the first phase, and
4092 allocate space in the global offset table. */
4095 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
4097 struct bfd_link_info *info;
4099 const Elf_Internal_Rela *relocs;
4103 Elf_Internal_Shdr *symtab_hdr;
4104 struct elf_link_hash_entry **sym_hashes;
4105 struct mips_got_info *g;
4107 const Elf_Internal_Rela *rel;
4108 const Elf_Internal_Rela *rel_end;
4111 struct elf_backend_data *bed;
4113 if (info->relocateable)
4116 dynobj = elf_hash_table (info)->dynobj;
4117 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4118 sym_hashes = elf_sym_hashes (abfd);
4119 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
4121 /* Check for the mips16 stub sections. */
4123 name = bfd_get_section_name (abfd, sec);
4124 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
4126 unsigned long r_symndx;
4128 /* Look at the relocation information to figure out which symbol
4131 r_symndx = ELF_R_SYM (abfd, relocs->r_info);
4133 if (r_symndx < extsymoff
4134 || sym_hashes[r_symndx - extsymoff] == NULL)
4138 /* This stub is for a local symbol. This stub will only be
4139 needed if there is some relocation in this BFD, other
4140 than a 16 bit function call, which refers to this symbol. */
4141 for (o = abfd->sections; o != NULL; o = o->next)
4143 Elf_Internal_Rela *sec_relocs;
4144 const Elf_Internal_Rela *r, *rend;
4146 /* We can ignore stub sections when looking for relocs. */
4147 if ((o->flags & SEC_RELOC) == 0
4148 || o->reloc_count == 0
4149 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
4150 sizeof FN_STUB - 1) == 0
4151 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
4152 sizeof CALL_STUB - 1) == 0
4153 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
4154 sizeof CALL_FP_STUB - 1) == 0)
4157 sec_relocs = (MNAME(abfd,_bfd_elf,link_read_relocs)
4158 (abfd, o, (PTR) NULL,
4159 (Elf_Internal_Rela *) NULL,
4160 info->keep_memory));
4161 if (sec_relocs == NULL)
4164 rend = sec_relocs + o->reloc_count;
4165 for (r = sec_relocs; r < rend; r++)
4166 if (ELF_R_SYM (abfd, r->r_info) == r_symndx
4167 && ELF_R_TYPE (abfd, r->r_info) != R_MIPS16_26)
4170 if (elf_section_data (o)->relocs != sec_relocs)
4179 /* There is no non-call reloc for this stub, so we do
4180 not need it. Since this function is called before
4181 the linker maps input sections to output sections, we
4182 can easily discard it by setting the SEC_EXCLUDE
4184 sec->flags |= SEC_EXCLUDE;
4188 /* Record this stub in an array of local symbol stubs for
4190 if (elf_tdata (abfd)->local_stubs == NULL)
4192 unsigned long symcount;
4196 if (elf_bad_symtab (abfd))
4197 symcount = NUM_SHDR_ENTRIES (symtab_hdr);
4199 symcount = symtab_hdr->sh_info;
4200 amt = symcount * sizeof (asection *);
4201 n = (asection **) bfd_zalloc (abfd, amt);
4204 elf_tdata (abfd)->local_stubs = n;
4207 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
4209 /* We don't need to set mips16_stubs_seen in this case.
4210 That flag is used to see whether we need to look through
4211 the global symbol table for stubs. We don't need to set
4212 it here, because we just have a local stub. */
4216 struct mips_elf_link_hash_entry *h;
4218 h = ((struct mips_elf_link_hash_entry *)
4219 sym_hashes[r_symndx - extsymoff]);
4221 /* H is the symbol this stub is for. */
4224 mips_elf_hash_table (info)->mips16_stubs_seen = TRUE;
4227 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
4228 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
4230 unsigned long r_symndx;
4231 struct mips_elf_link_hash_entry *h;
4234 /* Look at the relocation information to figure out which symbol
4237 r_symndx = ELF_R_SYM (abfd, relocs->r_info);
4239 if (r_symndx < extsymoff
4240 || sym_hashes[r_symndx - extsymoff] == NULL)
4242 /* This stub was actually built for a static symbol defined
4243 in the same file. We assume that all static symbols in
4244 mips16 code are themselves mips16, so we can simply
4245 discard this stub. Since this function is called before
4246 the linker maps input sections to output sections, we can
4247 easily discard it by setting the SEC_EXCLUDE flag. */
4248 sec->flags |= SEC_EXCLUDE;
4252 h = ((struct mips_elf_link_hash_entry *)
4253 sym_hashes[r_symndx - extsymoff]);
4255 /* H is the symbol this stub is for. */
4257 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
4258 loc = &h->call_fp_stub;
4260 loc = &h->call_stub;
4262 /* If we already have an appropriate stub for this function, we
4263 don't need another one, so we can discard this one. Since
4264 this function is called before the linker maps input sections
4265 to output sections, we can easily discard it by setting the
4266 SEC_EXCLUDE flag. We can also discard this section if we
4267 happen to already know that this is a mips16 function; it is
4268 not necessary to check this here, as it is checked later, but
4269 it is slightly faster to check now. */
4270 if (*loc != NULL || h->root.other == STO_MIPS16)
4272 sec->flags |= SEC_EXCLUDE;
4277 mips_elf_hash_table (info)->mips16_stubs_seen = TRUE;
4287 sgot = mips_elf_got_section (dynobj);
4292 BFD_ASSERT (elf_section_data (sgot) != NULL);
4293 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
4294 BFD_ASSERT (g != NULL);
4299 bed = get_elf_backend_data (abfd);
4300 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
4301 for (rel = relocs; rel < rel_end; ++rel)
4303 unsigned long r_symndx;
4304 unsigned int r_type;
4305 struct elf_link_hash_entry *h;
4307 r_symndx = ELF_R_SYM (abfd, rel->r_info);
4308 r_type = ELF_R_TYPE (abfd, rel->r_info);
4310 if (r_symndx < extsymoff)
4312 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
4314 (*_bfd_error_handler)
4315 (_("%s: Malformed reloc detected for section %s"),
4316 bfd_archive_filename (abfd), name);
4317 bfd_set_error (bfd_error_bad_value);
4322 h = sym_hashes[r_symndx - extsymoff];
4324 /* This may be an indirect symbol created because of a version. */
4327 while (h->root.type == bfd_link_hash_indirect)
4328 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4332 /* Some relocs require a global offset table. */
4333 if (dynobj == NULL || sgot == NULL)
4339 case R_MIPS_CALL_HI16:
4340 case R_MIPS_CALL_LO16:
4341 case R_MIPS_GOT_HI16:
4342 case R_MIPS_GOT_LO16:
4343 case R_MIPS_GOT_PAGE:
4344 case R_MIPS_GOT_OFST:
4345 case R_MIPS_GOT_DISP:
4347 elf_hash_table (info)->dynobj = dynobj = abfd;
4348 if (! mips_elf_create_got_section (dynobj, info))
4350 g = mips_elf_got_info (dynobj, &sgot);
4357 && (info->shared || h != NULL)
4358 && (sec->flags & SEC_ALLOC) != 0)
4359 elf_hash_table (info)->dynobj = dynobj = abfd;
4367 if (!h && (r_type == R_MIPS_CALL_LO16
4368 || r_type == R_MIPS_GOT_LO16
4369 || r_type == R_MIPS_GOT_DISP))
4371 struct mips_got_entry entry, **loc;
4373 /* We may need a local GOT entry for this relocation. We
4374 don't count R_MIPS_GOT_PAGE because we can estimate the
4375 maximum number of pages needed by looking at the size of
4376 the segment. Similar comments apply to R_MIPS_GOT16 and
4377 R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
4378 R_MIPS_CALL_HI16 because these are always followed by an
4379 R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */
4382 entry.symndx = r_symndx;
4383 entry.addend = rel->r_addend;
4384 loc = (struct mips_got_entry **)
4385 htab_find_slot (g->got_entries, &entry, INSERT);
4389 entry.gotidx = g->local_gotno++;
4391 *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry);
4396 memcpy (*loc, &entry, sizeof entry);
4398 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
4407 (*_bfd_error_handler)
4408 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
4409 bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
4410 bfd_set_error (bfd_error_bad_value);
4415 case R_MIPS_CALL_HI16:
4416 case R_MIPS_CALL_LO16:
4419 /* This symbol requires a global offset table entry. */
4420 if (! mips_elf_record_global_got_symbol (h, info, g))
4423 /* We need a stub, not a plt entry for the undefined
4424 function. But we record it as if it needs plt. See
4425 elf_adjust_dynamic_symbol in elflink.h. */
4426 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4432 case R_MIPS_GOT_HI16:
4433 case R_MIPS_GOT_LO16:
4434 case R_MIPS_GOT_DISP:
4435 /* This symbol requires a global offset table entry. */
4436 if (h && ! mips_elf_record_global_got_symbol (h, info, g))
4443 if ((info->shared || h != NULL)
4444 && (sec->flags & SEC_ALLOC) != 0)
4448 const char *dname = ".rel.dyn";
4450 sreloc = bfd_get_section_by_name (dynobj, dname);
4453 sreloc = bfd_make_section (dynobj, dname);
4455 || ! bfd_set_section_flags (dynobj, sreloc,
4460 | SEC_LINKER_CREATED
4462 || ! bfd_set_section_alignment (dynobj, sreloc,
4467 #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
4470 /* When creating a shared object, we must copy these
4471 reloc types into the output file as R_MIPS_REL32
4472 relocs. We make room for this reloc in the
4473 .rel.dyn reloc section. */
4474 mips_elf_allocate_dynamic_relocations (dynobj, 1);
4475 if ((sec->flags & MIPS_READONLY_SECTION)
4476 == MIPS_READONLY_SECTION)
4477 /* We tell the dynamic linker that there are
4478 relocations against the text segment. */
4479 info->flags |= DF_TEXTREL;
4483 struct mips_elf_link_hash_entry *hmips;
4485 /* We only need to copy this reloc if the symbol is
4486 defined in a dynamic object. */
4487 hmips = (struct mips_elf_link_hash_entry *) h;
4488 ++hmips->possibly_dynamic_relocs;
4489 if ((sec->flags & MIPS_READONLY_SECTION)
4490 == MIPS_READONLY_SECTION)
4491 /* We need it to tell the dynamic linker if there
4492 are relocations against the text segment. */
4493 hmips->readonly_reloc = TRUE;
4496 /* Even though we don't directly need a GOT entry for
4497 this symbol, a symbol must have a dynamic symbol
4498 table index greater that DT_MIPS_GOTSYM if there are
4499 dynamic relocations against it. */
4501 && ! mips_elf_record_global_got_symbol (h, info, g))
4505 if (SGI_COMPAT (abfd))
4506 mips_elf_hash_table (info)->compact_rel_size +=
4507 sizeof (Elf32_External_crinfo);
4511 case R_MIPS_GPREL16:
4512 case R_MIPS_LITERAL:
4513 case R_MIPS_GPREL32:
4514 if (SGI_COMPAT (abfd))
4515 mips_elf_hash_table (info)->compact_rel_size +=
4516 sizeof (Elf32_External_crinfo);
4519 /* This relocation describes the C++ object vtable hierarchy.
4520 Reconstruct it for later use during GC. */
4521 case R_MIPS_GNU_VTINHERIT:
4522 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4526 /* This relocation describes which C++ vtable entries are actually
4527 used. Record for later use during GC. */
4528 case R_MIPS_GNU_VTENTRY:
4529 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4537 /* We must not create a stub for a symbol that has relocations
4538 related to taking the function's address. */
4544 struct mips_elf_link_hash_entry *mh;
4546 mh = (struct mips_elf_link_hash_entry *) h;
4547 mh->no_fn_stub = TRUE;
4551 case R_MIPS_CALL_HI16:
4552 case R_MIPS_CALL_LO16:
4556 /* If this reloc is not a 16 bit call, and it has a global
4557 symbol, then we will need the fn_stub if there is one.
4558 References from a stub section do not count. */
4560 && r_type != R_MIPS16_26
4561 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
4562 sizeof FN_STUB - 1) != 0
4563 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
4564 sizeof CALL_STUB - 1) != 0
4565 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
4566 sizeof CALL_FP_STUB - 1) != 0)
4568 struct mips_elf_link_hash_entry *mh;
4570 mh = (struct mips_elf_link_hash_entry *) h;
4571 mh->need_fn_stub = TRUE;
4578 /* Adjust a symbol defined by a dynamic object and referenced by a
4579 regular object. The current definition is in some section of the
4580 dynamic object, but we're not including those sections. We have to
4581 change the definition to something the rest of the link can
4585 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
4586 struct bfd_link_info *info;
4587 struct elf_link_hash_entry *h;
4590 struct mips_elf_link_hash_entry *hmips;
4593 dynobj = elf_hash_table (info)->dynobj;
4595 /* Make sure we know what is going on here. */
4596 BFD_ASSERT (dynobj != NULL
4597 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4598 || h->weakdef != NULL
4599 || ((h->elf_link_hash_flags
4600 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4601 && (h->elf_link_hash_flags
4602 & ELF_LINK_HASH_REF_REGULAR) != 0
4603 && (h->elf_link_hash_flags
4604 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4606 /* If this symbol is defined in a dynamic object, we need to copy
4607 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
4609 hmips = (struct mips_elf_link_hash_entry *) h;
4610 if (! info->relocateable
4611 && hmips->possibly_dynamic_relocs != 0
4612 && (h->root.type == bfd_link_hash_defweak
4613 || (h->elf_link_hash_flags
4614 & ELF_LINK_HASH_DEF_REGULAR) == 0))
4616 mips_elf_allocate_dynamic_relocations (dynobj,
4617 hmips->possibly_dynamic_relocs);
4618 if (hmips->readonly_reloc)
4619 /* We tell the dynamic linker that there are relocations
4620 against the text segment. */
4621 info->flags |= DF_TEXTREL;
4624 /* For a function, create a stub, if allowed. */
4625 if (! hmips->no_fn_stub
4626 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4628 if (! elf_hash_table (info)->dynamic_sections_created)
4631 /* If this symbol is not defined in a regular file, then set
4632 the symbol to the stub location. This is required to make
4633 function pointers compare as equal between the normal
4634 executable and the shared library. */
4635 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4637 /* We need .stub section. */
4638 s = bfd_get_section_by_name (dynobj,
4639 MIPS_ELF_STUB_SECTION_NAME (dynobj));
4640 BFD_ASSERT (s != NULL);
4642 h->root.u.def.section = s;
4643 h->root.u.def.value = s->_raw_size;
4645 /* XXX Write this stub address somewhere. */
4646 h->plt.offset = s->_raw_size;
4648 /* Make room for this stub code. */
4649 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
4651 /* The last half word of the stub will be filled with the index
4652 of this symbol in .dynsym section. */
4656 else if ((h->type == STT_FUNC)
4657 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
4659 /* This will set the entry for this symbol in the GOT to 0, and
4660 the dynamic linker will take care of this. */
4661 h->root.u.def.value = 0;
4665 /* If this is a weak symbol, and there is a real definition, the
4666 processor independent code will have arranged for us to see the
4667 real definition first, and we can just use the same value. */
4668 if (h->weakdef != NULL)
4670 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4671 || h->weakdef->root.type == bfd_link_hash_defweak);
4672 h->root.u.def.section = h->weakdef->root.u.def.section;
4673 h->root.u.def.value = h->weakdef->root.u.def.value;
4677 /* This is a reference to a symbol defined by a dynamic object which
4678 is not a function. */
4683 /* This function is called after all the input files have been read,
4684 and the input sections have been assigned to output sections. We
4685 check for any mips16 stub sections that we can discard. */
4688 _bfd_mips_elf_always_size_sections (output_bfd, info)
4690 struct bfd_link_info *info;
4694 /* The .reginfo section has a fixed size. */
4695 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
4697 bfd_set_section_size (output_bfd, ri,
4698 (bfd_size_type) sizeof (Elf32_External_RegInfo));
4700 if (info->relocateable
4701 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
4704 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
4705 mips_elf_check_mips16_stubs,
4711 /* Set the sizes of the dynamic sections. */
4714 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
4716 struct bfd_link_info *info;
4720 bfd_boolean reltext;
4721 struct mips_got_info *g = NULL;
4723 dynobj = elf_hash_table (info)->dynobj;
4724 BFD_ASSERT (dynobj != NULL);
4726 if (elf_hash_table (info)->dynamic_sections_created)
4728 /* Set the contents of the .interp section to the interpreter. */
4731 s = bfd_get_section_by_name (dynobj, ".interp");
4732 BFD_ASSERT (s != NULL);
4734 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
4736 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
4740 /* The check_relocs and adjust_dynamic_symbol entry points have
4741 determined the sizes of the various dynamic sections. Allocate
4744 for (s = dynobj->sections; s != NULL; s = s->next)
4749 /* It's OK to base decisions on the section name, because none
4750 of the dynobj section names depend upon the input files. */
4751 name = bfd_get_section_name (dynobj, s);
4753 if ((s->flags & SEC_LINKER_CREATED) == 0)
4758 if (strncmp (name, ".rel", 4) == 0)
4760 if (s->_raw_size == 0)
4762 /* We only strip the section if the output section name
4763 has the same name. Otherwise, there might be several
4764 input sections for this output section. FIXME: This
4765 code is probably not needed these days anyhow, since
4766 the linker now does not create empty output sections. */
4767 if (s->output_section != NULL
4769 bfd_get_section_name (s->output_section->owner,
4770 s->output_section)) == 0)
4775 const char *outname;
4778 /* If this relocation section applies to a read only
4779 section, then we probably need a DT_TEXTREL entry.
4780 If the relocation section is .rel.dyn, we always
4781 assert a DT_TEXTREL entry rather than testing whether
4782 there exists a relocation to a read only section or
4784 outname = bfd_get_section_name (output_bfd,
4786 target = bfd_get_section_by_name (output_bfd, outname + 4);
4788 && (target->flags & SEC_READONLY) != 0
4789 && (target->flags & SEC_ALLOC) != 0)
4790 || strcmp (outname, ".rel.dyn") == 0)
4793 /* We use the reloc_count field as a counter if we need
4794 to copy relocs into the output file. */
4795 if (strcmp (name, ".rel.dyn") != 0)
4799 else if (strncmp (name, ".got", 4) == 0)
4802 bfd_size_type loadable_size = 0;
4803 bfd_size_type local_gotno;
4806 BFD_ASSERT (elf_section_data (s) != NULL);
4807 g = (struct mips_got_info *) elf_section_data (s)->tdata;
4808 BFD_ASSERT (g != NULL);
4810 /* Calculate the total loadable size of the output. That
4811 will give us the maximum number of GOT_PAGE entries
4813 for (sub = info->input_bfds; sub; sub = sub->link_next)
4815 asection *subsection;
4817 for (subsection = sub->sections;
4819 subsection = subsection->next)
4821 if ((subsection->flags & SEC_ALLOC) == 0)
4823 loadable_size += ((subsection->_raw_size + 0xf)
4824 &~ (bfd_size_type) 0xf);
4827 loadable_size += MIPS_FUNCTION_STUB_SIZE;
4829 /* Assume there are two loadable segments consisting of
4830 contiguous sections. Is 5 enough? */
4831 local_gotno = (loadable_size >> 16) + 5;
4833 g->local_gotno += local_gotno;
4834 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
4836 /* There has to be a global GOT entry for every symbol with
4837 a dynamic symbol table index of DT_MIPS_GOTSYM or
4838 higher. Therefore, it make sense to put those symbols
4839 that need GOT entries at the end of the symbol table. We
4841 if (! mips_elf_sort_hash_table (info, 1))
4844 if (g->global_gotsym != NULL)
4845 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
4847 /* If there are no global symbols, or none requiring
4848 relocations, then GLOBAL_GOTSYM will be NULL. */
4850 g->global_gotno = i;
4851 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
4853 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
4855 /* IRIX rld assumes that the function stub isn't at the end
4856 of .text section. So put a dummy. XXX */
4857 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
4859 else if (! info->shared
4860 && ! mips_elf_hash_table (info)->use_rld_obj_head
4861 && strncmp (name, ".rld_map", 8) == 0)
4863 /* We add a room for __rld_map. It will be filled in by the
4864 rtld to contain a pointer to the _r_debug structure. */
4867 else if (SGI_COMPAT (output_bfd)
4868 && strncmp (name, ".compact_rel", 12) == 0)
4869 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
4870 else if (strcmp (name, ".msym") == 0)
4871 s->_raw_size = (sizeof (Elf32_External_Msym)
4872 * (elf_hash_table (info)->dynsymcount
4873 + bfd_count_sections (output_bfd)));
4874 else if (strncmp (name, ".init", 5) != 0)
4876 /* It's not one of our sections, so don't allocate space. */
4882 _bfd_strip_section_from_output (info, s);
4886 /* Allocate memory for the section contents. */
4887 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4888 if (s->contents == NULL && s->_raw_size != 0)
4890 bfd_set_error (bfd_error_no_memory);
4895 if (elf_hash_table (info)->dynamic_sections_created)
4897 /* Add some entries to the .dynamic section. We fill in the
4898 values later, in _bfd_mips_elf_finish_dynamic_sections, but we
4899 must add the entries now so that we get the correct size for
4900 the .dynamic section. The DT_DEBUG entry is filled in by the
4901 dynamic linker and used by the debugger. */
4904 /* SGI object has the equivalence of DT_DEBUG in the
4905 DT_MIPS_RLD_MAP entry. */
4906 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
4908 if (!SGI_COMPAT (output_bfd))
4910 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
4916 /* Shared libraries on traditional mips have DT_DEBUG. */
4917 if (!SGI_COMPAT (output_bfd))
4919 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
4924 if (reltext && SGI_COMPAT (output_bfd))
4925 info->flags |= DF_TEXTREL;
4927 if ((info->flags & DF_TEXTREL) != 0)
4929 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
4933 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
4936 if (bfd_get_section_by_name (dynobj, ".rel.dyn"))
4938 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
4941 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
4944 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
4948 if (SGI_COMPAT (output_bfd))
4950 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
4954 if (SGI_COMPAT (output_bfd))
4956 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
4960 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
4962 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
4965 s = bfd_get_section_by_name (dynobj, ".liblist");
4966 BFD_ASSERT (s != NULL);
4968 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
4972 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
4975 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
4979 /* Time stamps in executable files are a bad idea. */
4980 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
4985 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
4990 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
4994 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
4997 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
5000 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
5003 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
5006 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
5009 if (IRIX_COMPAT (dynobj) == ict_irix5
5010 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
5013 if (IRIX_COMPAT (dynobj) == ict_irix6
5014 && (bfd_get_section_by_name
5015 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
5016 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
5019 if (bfd_get_section_by_name (dynobj, ".msym")
5020 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
5027 /* Relocate a MIPS ELF section. */
5030 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5031 contents, relocs, local_syms, local_sections)
5033 struct bfd_link_info *info;
5035 asection *input_section;
5037 Elf_Internal_Rela *relocs;
5038 Elf_Internal_Sym *local_syms;
5039 asection **local_sections;
5041 Elf_Internal_Rela *rel;
5042 const Elf_Internal_Rela *relend;
5044 bfd_boolean use_saved_addend_p = FALSE;
5045 struct elf_backend_data *bed;
5047 bed = get_elf_backend_data (output_bfd);
5048 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
5049 for (rel = relocs; rel < relend; ++rel)
5053 reloc_howto_type *howto;
5054 bfd_boolean require_jalx;
5055 /* TRUE if the relocation is a RELA relocation, rather than a
5057 bfd_boolean rela_relocation_p = TRUE;
5058 unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info);
5059 const char * msg = (const char *) NULL;
5061 /* Find the relocation howto for this relocation. */
5062 if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd))
5064 /* Some 32-bit code uses R_MIPS_64. In particular, people use
5065 64-bit code, but make sure all their addresses are in the
5066 lowermost or uppermost 32-bit section of the 64-bit address
5067 space. Thus, when they use an R_MIPS_64 they mean what is
5068 usually meant by R_MIPS_32, with the exception that the
5069 stored value is sign-extended to 64 bits. */
5070 howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE);
5072 /* On big-endian systems, we need to lie about the position
5074 if (bfd_big_endian (input_bfd))
5078 /* NewABI defaults to RELA relocations. */
5079 howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type,
5080 NEWABI_P (input_bfd)
5081 && (MIPS_RELOC_RELA_P
5082 (input_bfd, input_section,
5085 if (!use_saved_addend_p)
5087 Elf_Internal_Shdr *rel_hdr;
5089 /* If these relocations were originally of the REL variety,
5090 we must pull the addend out of the field that will be
5091 relocated. Otherwise, we simply use the contents of the
5092 RELA relocation. To determine which flavor or relocation
5093 this is, we depend on the fact that the INPUT_SECTION's
5094 REL_HDR is read before its REL_HDR2. */
5095 rel_hdr = &elf_section_data (input_section)->rel_hdr;
5096 if ((size_t) (rel - relocs)
5097 >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
5098 rel_hdr = elf_section_data (input_section)->rel_hdr2;
5099 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
5101 /* Note that this is a REL relocation. */
5102 rela_relocation_p = FALSE;
5104 /* Get the addend, which is stored in the input file. */
5105 addend = mips_elf_obtain_contents (howto, rel, input_bfd,
5107 addend &= howto->src_mask;
5108 addend <<= howto->rightshift;
5110 /* For some kinds of relocations, the ADDEND is a
5111 combination of the addend stored in two different
5113 if (r_type == R_MIPS_HI16
5114 || r_type == R_MIPS_GNU_REL_HI16
5115 || (r_type == R_MIPS_GOT16
5116 && mips_elf_local_relocation_p (input_bfd, rel,
5117 local_sections, FALSE)))
5120 const Elf_Internal_Rela *lo16_relocation;
5121 reloc_howto_type *lo16_howto;
5124 /* The combined value is the sum of the HI16 addend,
5125 left-shifted by sixteen bits, and the LO16
5126 addend, sign extended. (Usually, the code does
5127 a `lui' of the HI16 value, and then an `addiu' of
5130 Scan ahead to find a matching LO16 relocation. */
5131 if (r_type == R_MIPS_GNU_REL_HI16)
5132 lo = R_MIPS_GNU_REL_LO16;
5135 lo16_relocation = mips_elf_next_relocation (input_bfd, lo,
5137 if (lo16_relocation == NULL)
5140 /* Obtain the addend kept there. */
5141 lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, lo, FALSE);
5142 l = mips_elf_obtain_contents (lo16_howto, lo16_relocation,
5143 input_bfd, contents);
5144 l &= lo16_howto->src_mask;
5145 l <<= lo16_howto->rightshift;
5146 l = mips_elf_sign_extend (l, 16);
5150 /* Compute the combined addend. */
5153 /* If PC-relative, subtract the difference between the
5154 address of the LO part of the reloc and the address of
5155 the HI part. The relocation is relative to the LO
5156 part, but mips_elf_calculate_relocation() doesn't
5157 know its address or the difference from the HI part, so
5158 we subtract that difference here. See also the
5159 comment in mips_elf_calculate_relocation(). */
5160 if (r_type == R_MIPS_GNU_REL_HI16)
5161 addend -= (lo16_relocation->r_offset - rel->r_offset);
5163 else if (r_type == R_MIPS16_GPREL)
5165 /* The addend is scrambled in the object file. See
5166 mips_elf_perform_relocation for details on the
5168 addend = (((addend & 0x1f0000) >> 5)
5169 | ((addend & 0x7e00000) >> 16)
5174 addend = rel->r_addend;
5177 if (info->relocateable)
5179 Elf_Internal_Sym *sym;
5180 unsigned long r_symndx;
5182 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)
5183 && bfd_big_endian (input_bfd))
5186 /* Since we're just relocating, all we need to do is copy
5187 the relocations back out to the object file, unless
5188 they're against a section symbol, in which case we need
5189 to adjust by the section offset, or unless they're GP
5190 relative in which case we need to adjust by the amount
5191 that we're adjusting GP in this relocateable object. */
5193 if (! mips_elf_local_relocation_p (input_bfd, rel, local_sections,
5195 /* There's nothing to do for non-local relocations. */
5198 if (r_type == R_MIPS16_GPREL
5199 || r_type == R_MIPS_GPREL16
5200 || r_type == R_MIPS_GPREL32
5201 || r_type == R_MIPS_LITERAL)
5202 addend -= (_bfd_get_gp_value (output_bfd)
5203 - _bfd_get_gp_value (input_bfd));
5205 r_symndx = ELF_R_SYM (output_bfd, rel->r_info);
5206 sym = local_syms + r_symndx;
5207 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5208 /* Adjust the addend appropriately. */
5209 addend += local_sections[r_symndx]->output_offset;
5211 if (howto->partial_inplace)
5213 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
5214 then we only want to write out the high-order 16 bits.
5215 The subsequent R_MIPS_LO16 will handle the low-order bits.
5217 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
5218 || r_type == R_MIPS_GNU_REL_HI16)
5219 addend = mips_elf_high (addend);
5220 else if (r_type == R_MIPS_HIGHER)
5221 addend = mips_elf_higher (addend);
5222 else if (r_type == R_MIPS_HIGHEST)
5223 addend = mips_elf_highest (addend);
5226 if (rela_relocation_p)
5227 /* If this is a RELA relocation, just update the addend.
5228 We have to cast away constness for REL. */
5229 rel->r_addend = addend;
5232 /* Otherwise, we have to write the value back out. Note
5233 that we use the source mask, rather than the
5234 destination mask because the place to which we are
5235 writing will be source of the addend in the final
5237 addend >>= howto->rightshift;
5238 addend &= howto->src_mask;
5240 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd))
5241 /* See the comment above about using R_MIPS_64 in the 32-bit
5242 ABI. Here, we need to update the addend. It would be
5243 possible to get away with just using the R_MIPS_32 reloc
5244 but for endianness. */
5250 if (addend & ((bfd_vma) 1 << 31))
5252 sign_bits = ((bfd_vma) 1 << 32) - 1;
5259 /* If we don't know that we have a 64-bit type,
5260 do two separate stores. */
5261 if (bfd_big_endian (input_bfd))
5263 /* Store the sign-bits (which are most significant)
5265 low_bits = sign_bits;
5271 high_bits = sign_bits;
5273 bfd_put_32 (input_bfd, low_bits,
5274 contents + rel->r_offset);
5275 bfd_put_32 (input_bfd, high_bits,
5276 contents + rel->r_offset + 4);
5280 if (! mips_elf_perform_relocation (info, howto, rel, addend,
5281 input_bfd, input_section,
5286 /* Go on to the next relocation. */
5290 /* In the N32 and 64-bit ABIs there may be multiple consecutive
5291 relocations for the same offset. In that case we are
5292 supposed to treat the output of each relocation as the addend
5294 if (rel + 1 < relend
5295 && rel->r_offset == rel[1].r_offset
5296 && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE)
5297 use_saved_addend_p = TRUE;
5299 use_saved_addend_p = FALSE;
5301 addend >>= howto->rightshift;
5303 /* Figure out what value we are supposed to relocate. */
5304 switch (mips_elf_calculate_relocation (output_bfd, input_bfd,
5305 input_section, info, rel,
5306 addend, howto, local_syms,
5307 local_sections, &value,
5308 &name, &require_jalx,
5309 use_saved_addend_p))
5311 case bfd_reloc_continue:
5312 /* There's nothing to do. */
5315 case bfd_reloc_undefined:
5316 /* mips_elf_calculate_relocation already called the
5317 undefined_symbol callback. There's no real point in
5318 trying to perform the relocation at this point, so we
5319 just skip ahead to the next relocation. */
5322 case bfd_reloc_notsupported:
5323 msg = _("internal error: unsupported relocation error");
5324 info->callbacks->warning
5325 (info, msg, name, input_bfd, input_section, rel->r_offset);
5328 case bfd_reloc_overflow:
5329 if (use_saved_addend_p)
5330 /* Ignore overflow until we reach the last relocation for
5331 a given location. */
5335 BFD_ASSERT (name != NULL);
5336 if (! ((*info->callbacks->reloc_overflow)
5337 (info, name, howto->name, (bfd_vma) 0,
5338 input_bfd, input_section, rel->r_offset)))
5351 /* If we've got another relocation for the address, keep going
5352 until we reach the last one. */
5353 if (use_saved_addend_p)
5359 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd))
5360 /* See the comment above about using R_MIPS_64 in the 32-bit
5361 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
5362 that calculated the right value. Now, however, we
5363 sign-extend the 32-bit result to 64-bits, and store it as a
5364 64-bit value. We are especially generous here in that we
5365 go to extreme lengths to support this usage on systems with
5366 only a 32-bit VMA. */
5372 if (value & ((bfd_vma) 1 << 31))
5374 sign_bits = ((bfd_vma) 1 << 32) - 1;
5381 /* If we don't know that we have a 64-bit type,
5382 do two separate stores. */
5383 if (bfd_big_endian (input_bfd))
5385 /* Undo what we did above. */
5387 /* Store the sign-bits (which are most significant)
5389 low_bits = sign_bits;
5395 high_bits = sign_bits;
5397 bfd_put_32 (input_bfd, low_bits,
5398 contents + rel->r_offset);
5399 bfd_put_32 (input_bfd, high_bits,
5400 contents + rel->r_offset + 4);
5404 /* Actually perform the relocation. */
5405 if (! mips_elf_perform_relocation (info, howto, rel, value,
5406 input_bfd, input_section,
5407 contents, require_jalx))
5414 /* If NAME is one of the special IRIX6 symbols defined by the linker,
5415 adjust it appropriately now. */
5418 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
5419 bfd *abfd ATTRIBUTE_UNUSED;
5421 Elf_Internal_Sym *sym;
5423 /* The linker script takes care of providing names and values for
5424 these, but we must place them into the right sections. */
5425 static const char* const text_section_symbols[] = {
5428 "__dso_displacement",
5430 "__program_header_table",
5434 static const char* const data_section_symbols[] = {
5442 const char* const *p;
5445 for (i = 0; i < 2; ++i)
5446 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
5449 if (strcmp (*p, name) == 0)
5451 /* All of these symbols are given type STT_SECTION by the
5453 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5455 /* The IRIX linker puts these symbols in special sections. */
5457 sym->st_shndx = SHN_MIPS_TEXT;
5459 sym->st_shndx = SHN_MIPS_DATA;
5465 /* Finish up dynamic symbol handling. We set the contents of various
5466 dynamic sections here. */
5469 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
5471 struct bfd_link_info *info;
5472 struct elf_link_hash_entry *h;
5473 Elf_Internal_Sym *sym;
5479 struct mips_got_info *g;
5481 struct mips_elf_link_hash_entry *mh;
5483 dynobj = elf_hash_table (info)->dynobj;
5484 gval = sym->st_value;
5485 mh = (struct mips_elf_link_hash_entry *) h;
5487 if (h->plt.offset != (bfd_vma) -1)
5490 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
5492 /* This symbol has a stub. Set it up. */
5494 BFD_ASSERT (h->dynindx != -1);
5496 s = bfd_get_section_by_name (dynobj,
5497 MIPS_ELF_STUB_SECTION_NAME (dynobj));
5498 BFD_ASSERT (s != NULL);
5500 /* FIXME: Can h->dynindex be more than 64K? */
5501 if (h->dynindx & 0xffff0000)
5504 /* Fill the stub. */
5505 bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub);
5506 bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + 4);
5507 bfd_put_32 (output_bfd, STUB_JALR, stub + 8);
5508 bfd_put_32 (output_bfd, STUB_LI16 (output_bfd) + h->dynindx, stub + 12);
5510 BFD_ASSERT (h->plt.offset <= s->_raw_size);
5511 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
5513 /* Mark the symbol as undefined. plt.offset != -1 occurs
5514 only for the referenced symbol. */
5515 sym->st_shndx = SHN_UNDEF;
5517 /* The run-time linker uses the st_value field of the symbol
5518 to reset the global offset table entry for this external
5519 to its stub address when unlinking a shared object. */
5520 gval = s->output_section->vma + s->output_offset + h->plt.offset;
5521 sym->st_value = gval;
5524 BFD_ASSERT (h->dynindx != -1
5525 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
5527 sgot = mips_elf_got_section (dynobj);
5528 BFD_ASSERT (sgot != NULL);
5529 BFD_ASSERT (elf_section_data (sgot) != NULL);
5530 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5531 BFD_ASSERT (g != NULL);
5533 /* Run through the global symbol table, creating GOT entries for all
5534 the symbols that need them. */
5535 if (g->global_gotsym != NULL
5536 && h->dynindx >= g->global_gotsym->dynindx)
5542 value = sym->st_value;
5545 /* For an entity defined in a shared object, this will be
5546 NULL. (For functions in shared objects for
5547 which we have created stubs, ST_VALUE will be non-NULL.
5548 That's because such the functions are now no longer defined
5549 in a shared object.) */
5551 if (info->shared && h->root.type == bfd_link_hash_undefined)
5554 value = h->root.u.def.value;
5556 offset = mips_elf_global_got_index (dynobj, h);
5557 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
5560 /* Create a .msym entry, if appropriate. */
5561 smsym = bfd_get_section_by_name (dynobj, ".msym");
5564 Elf32_Internal_Msym msym;
5566 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
5567 /* It is undocumented what the `1' indicates, but IRIX6 uses
5569 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
5570 bfd_mips_elf_swap_msym_out
5572 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
5575 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5576 name = h->root.root.string;
5577 if (strcmp (name, "_DYNAMIC") == 0
5578 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
5579 sym->st_shndx = SHN_ABS;
5580 else if (strcmp (name, "_DYNAMIC_LINK") == 0
5581 || strcmp (name, "_DYNAMIC_LINKING") == 0)
5583 sym->st_shndx = SHN_ABS;
5584 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5587 else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd))
5589 sym->st_shndx = SHN_ABS;
5590 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5591 sym->st_value = elf_gp (output_bfd);
5593 else if (SGI_COMPAT (output_bfd))
5595 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
5596 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
5598 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5599 sym->st_other = STO_PROTECTED;
5601 sym->st_shndx = SHN_MIPS_DATA;
5603 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
5605 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5606 sym->st_other = STO_PROTECTED;
5607 sym->st_value = mips_elf_hash_table (info)->procedure_count;
5608 sym->st_shndx = SHN_ABS;
5610 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
5612 if (h->type == STT_FUNC)
5613 sym->st_shndx = SHN_MIPS_TEXT;
5614 else if (h->type == STT_OBJECT)
5615 sym->st_shndx = SHN_MIPS_DATA;
5619 /* Handle the IRIX6-specific symbols. */
5620 if (IRIX_COMPAT (output_bfd) == ict_irix6)
5621 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
5625 if (! mips_elf_hash_table (info)->use_rld_obj_head
5626 && (strcmp (name, "__rld_map") == 0
5627 || strcmp (name, "__RLD_MAP") == 0))
5629 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
5630 BFD_ASSERT (s != NULL);
5631 sym->st_value = s->output_section->vma + s->output_offset;
5632 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
5633 if (mips_elf_hash_table (info)->rld_value == 0)
5634 mips_elf_hash_table (info)->rld_value = sym->st_value;
5636 else if (mips_elf_hash_table (info)->use_rld_obj_head
5637 && strcmp (name, "__rld_obj_head") == 0)
5639 /* IRIX6 does not use a .rld_map section. */
5640 if (IRIX_COMPAT (output_bfd) == ict_irix5
5641 || IRIX_COMPAT (output_bfd) == ict_none)
5642 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
5644 mips_elf_hash_table (info)->rld_value = sym->st_value;
5648 /* If this is a mips16 symbol, force the value to be even. */
5649 if (sym->st_other == STO_MIPS16
5650 && (sym->st_value & 1) != 0)
5656 /* Finish up the dynamic sections. */
5659 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
5661 struct bfd_link_info *info;
5666 struct mips_got_info *g;
5668 dynobj = elf_hash_table (info)->dynobj;
5670 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5672 sgot = bfd_get_section_by_name (dynobj, ".got");
5677 BFD_ASSERT (elf_section_data (sgot) != NULL);
5678 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5679 BFD_ASSERT (g != NULL);
5682 if (elf_hash_table (info)->dynamic_sections_created)
5686 BFD_ASSERT (sdyn != NULL);
5687 BFD_ASSERT (g != NULL);
5689 for (b = sdyn->contents;
5690 b < sdyn->contents + sdyn->_raw_size;
5691 b += MIPS_ELF_DYN_SIZE (dynobj))
5693 Elf_Internal_Dyn dyn;
5697 bfd_boolean swap_out_p;
5699 /* Read in the current dynamic entry. */
5700 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
5702 /* Assume that we're going to modify it and write it out. */
5708 s = (bfd_get_section_by_name (dynobj, ".rel.dyn"));
5709 BFD_ASSERT (s != NULL);
5710 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
5714 /* Rewrite DT_STRSZ. */
5716 _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
5722 case DT_MIPS_CONFLICT:
5725 case DT_MIPS_LIBLIST:
5728 s = bfd_get_section_by_name (output_bfd, name);
5729 BFD_ASSERT (s != NULL);
5730 dyn.d_un.d_ptr = s->vma;
5733 case DT_MIPS_RLD_VERSION:
5734 dyn.d_un.d_val = 1; /* XXX */
5738 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
5741 case DT_MIPS_CONFLICTNO:
5743 elemsize = sizeof (Elf32_Conflict);
5746 case DT_MIPS_LIBLISTNO:
5748 elemsize = sizeof (Elf32_Lib);
5750 s = bfd_get_section_by_name (output_bfd, name);
5753 if (s->_cooked_size != 0)
5754 dyn.d_un.d_val = s->_cooked_size / elemsize;
5756 dyn.d_un.d_val = s->_raw_size / elemsize;
5762 case DT_MIPS_TIME_STAMP:
5763 time ((time_t *) &dyn.d_un.d_val);
5766 case DT_MIPS_ICHECKSUM:
5771 case DT_MIPS_IVERSION:
5776 case DT_MIPS_BASE_ADDRESS:
5777 s = output_bfd->sections;
5778 BFD_ASSERT (s != NULL);
5779 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
5782 case DT_MIPS_LOCAL_GOTNO:
5783 dyn.d_un.d_val = g->local_gotno;
5786 case DT_MIPS_UNREFEXTNO:
5787 /* The index into the dynamic symbol table which is the
5788 entry of the first external symbol that is not
5789 referenced within the same object. */
5790 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
5793 case DT_MIPS_GOTSYM:
5794 if (g->global_gotsym)
5796 dyn.d_un.d_val = g->global_gotsym->dynindx;
5799 /* In case if we don't have global got symbols we default
5800 to setting DT_MIPS_GOTSYM to the same value as
5801 DT_MIPS_SYMTABNO, so we just fall through. */
5803 case DT_MIPS_SYMTABNO:
5805 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
5806 s = bfd_get_section_by_name (output_bfd, name);
5807 BFD_ASSERT (s != NULL);
5809 if (s->_cooked_size != 0)
5810 dyn.d_un.d_val = s->_cooked_size / elemsize;
5812 dyn.d_un.d_val = s->_raw_size / elemsize;
5815 case DT_MIPS_HIPAGENO:
5816 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
5819 case DT_MIPS_RLD_MAP:
5820 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
5823 case DT_MIPS_OPTIONS:
5824 s = (bfd_get_section_by_name
5825 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
5826 dyn.d_un.d_ptr = s->vma;
5830 s = (bfd_get_section_by_name (output_bfd, ".msym"));
5831 dyn.d_un.d_ptr = s->vma;
5840 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
5845 /* The first entry of the global offset table will be filled at
5846 runtime. The second entry will be used by some runtime loaders.
5847 This isn't the case of IRIX rld. */
5848 if (sgot != NULL && sgot->_raw_size > 0)
5850 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
5851 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
5852 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
5856 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
5857 = MIPS_ELF_GOT_SIZE (output_bfd);
5862 Elf32_compact_rel cpt;
5864 /* ??? The section symbols for the output sections were set up in
5865 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
5866 symbols. Should we do so? */
5868 smsym = bfd_get_section_by_name (dynobj, ".msym");
5871 Elf32_Internal_Msym msym;
5873 msym.ms_hash_value = 0;
5874 msym.ms_info = ELF32_MS_INFO (0, 1);
5876 for (s = output_bfd->sections; s != NULL; s = s->next)
5878 long dynindx = elf_section_data (s)->dynindx;
5880 bfd_mips_elf_swap_msym_out
5882 (((Elf32_External_Msym *) smsym->contents)
5887 if (SGI_COMPAT (output_bfd))
5889 /* Write .compact_rel section out. */
5890 s = bfd_get_section_by_name (dynobj, ".compact_rel");
5894 cpt.num = s->reloc_count;
5896 cpt.offset = (s->output_section->filepos
5897 + sizeof (Elf32_External_compact_rel));
5900 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
5901 ((Elf32_External_compact_rel *)
5904 /* Clean up a dummy stub function entry in .text. */
5905 s = bfd_get_section_by_name (dynobj,
5906 MIPS_ELF_STUB_SECTION_NAME (dynobj));
5909 file_ptr dummy_offset;
5911 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
5912 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
5913 memset (s->contents + dummy_offset, 0,
5914 MIPS_FUNCTION_STUB_SIZE);
5919 /* We need to sort the entries of the dynamic relocation section. */
5921 if (!ABI_64_P (output_bfd))
5925 reldyn = bfd_get_section_by_name (dynobj, ".rel.dyn");
5926 if (reldyn != NULL && reldyn->reloc_count > 2)
5928 reldyn_sorting_bfd = output_bfd;
5929 qsort ((Elf32_External_Rel *) reldyn->contents + 1,
5930 (size_t) reldyn->reloc_count - 1,
5931 sizeof (Elf32_External_Rel), sort_dynamic_relocs);
5935 /* Clean up a first relocation in .rel.dyn. */
5936 s = bfd_get_section_by_name (dynobj, ".rel.dyn");
5937 if (s != NULL && s->_raw_size > 0)
5938 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
5945 /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */
5948 mips_set_isa_flags (abfd)
5953 switch (bfd_get_mach (abfd))
5956 case bfd_mach_mips3000:
5957 val = E_MIPS_ARCH_1;
5960 case bfd_mach_mips3900:
5961 val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
5964 case bfd_mach_mips6000:
5965 val = E_MIPS_ARCH_2;
5968 case bfd_mach_mips4000:
5969 case bfd_mach_mips4300:
5970 case bfd_mach_mips4400:
5971 case bfd_mach_mips4600:
5972 val = E_MIPS_ARCH_3;
5975 case bfd_mach_mips4010:
5976 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
5979 case bfd_mach_mips4100:
5980 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
5983 case bfd_mach_mips4111:
5984 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
5987 case bfd_mach_mips4120:
5988 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120;
5991 case bfd_mach_mips4650:
5992 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
5995 case bfd_mach_mips5400:
5996 val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400;
5999 case bfd_mach_mips5500:
6000 val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500;
6003 case bfd_mach_mips5000:
6004 case bfd_mach_mips8000:
6005 case bfd_mach_mips10000:
6006 case bfd_mach_mips12000:
6007 val = E_MIPS_ARCH_4;
6010 case bfd_mach_mips5:
6011 val = E_MIPS_ARCH_5;
6014 case bfd_mach_mips_sb1:
6015 val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1;
6018 case bfd_mach_mipsisa32:
6019 val = E_MIPS_ARCH_32;
6022 case bfd_mach_mipsisa64:
6023 val = E_MIPS_ARCH_64;
6026 case bfd_mach_mipsisa32r2:
6027 val = E_MIPS_ARCH_32R2;
6030 elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
6031 elf_elfheader (abfd)->e_flags |= val;
6036 /* The final processing done just before writing out a MIPS ELF object
6037 file. This gets the MIPS architecture right based on the machine
6038 number. This is used by both the 32-bit and the 64-bit ABI. */
6041 _bfd_mips_elf_final_write_processing (abfd, linker)
6043 bfd_boolean linker ATTRIBUTE_UNUSED;
6046 Elf_Internal_Shdr **hdrpp;
6050 /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former
6051 is nonzero. This is for compatibility with old objects, which used
6052 a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */
6053 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0)
6054 mips_set_isa_flags (abfd);
6056 /* Set the sh_info field for .gptab sections and other appropriate
6057 info for each special section. */
6058 for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
6059 i < elf_numsections (abfd);
6062 switch ((*hdrpp)->sh_type)
6065 case SHT_MIPS_LIBLIST:
6066 sec = bfd_get_section_by_name (abfd, ".dynstr");
6068 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
6071 case SHT_MIPS_GPTAB:
6072 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
6073 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
6074 BFD_ASSERT (name != NULL
6075 && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
6076 sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
6077 BFD_ASSERT (sec != NULL);
6078 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
6081 case SHT_MIPS_CONTENT:
6082 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
6083 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
6084 BFD_ASSERT (name != NULL
6085 && strncmp (name, ".MIPS.content",
6086 sizeof ".MIPS.content" - 1) == 0);
6087 sec = bfd_get_section_by_name (abfd,
6088 name + sizeof ".MIPS.content" - 1);
6089 BFD_ASSERT (sec != NULL);
6090 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
6093 case SHT_MIPS_SYMBOL_LIB:
6094 sec = bfd_get_section_by_name (abfd, ".dynsym");
6096 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
6097 sec = bfd_get_section_by_name (abfd, ".liblist");
6099 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
6102 case SHT_MIPS_EVENTS:
6103 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
6104 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
6105 BFD_ASSERT (name != NULL);
6106 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
6107 sec = bfd_get_section_by_name (abfd,
6108 name + sizeof ".MIPS.events" - 1);
6111 BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
6112 sizeof ".MIPS.post_rel" - 1) == 0);
6113 sec = bfd_get_section_by_name (abfd,
6115 + sizeof ".MIPS.post_rel" - 1));
6117 BFD_ASSERT (sec != NULL);
6118 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
6125 /* When creating an IRIX5 executable, we need REGINFO and RTPROC
6129 _bfd_mips_elf_additional_program_headers (abfd)
6135 /* See if we need a PT_MIPS_REGINFO segment. */
6136 s = bfd_get_section_by_name (abfd, ".reginfo");
6137 if (s && (s->flags & SEC_LOAD))
6140 /* See if we need a PT_MIPS_OPTIONS segment. */
6141 if (IRIX_COMPAT (abfd) == ict_irix6
6142 && bfd_get_section_by_name (abfd,
6143 MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
6146 /* See if we need a PT_MIPS_RTPROC segment. */
6147 if (IRIX_COMPAT (abfd) == ict_irix5
6148 && bfd_get_section_by_name (abfd, ".dynamic")
6149 && bfd_get_section_by_name (abfd, ".mdebug"))
6155 /* Modify the segment map for an IRIX5 executable. */
6158 _bfd_mips_elf_modify_segment_map (abfd)
6162 struct elf_segment_map *m, **pm;
6165 /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
6167 s = bfd_get_section_by_name (abfd, ".reginfo");
6168 if (s != NULL && (s->flags & SEC_LOAD) != 0)
6170 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
6171 if (m->p_type == PT_MIPS_REGINFO)
6176 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
6180 m->p_type = PT_MIPS_REGINFO;
6184 /* We want to put it after the PHDR and INTERP segments. */
6185 pm = &elf_tdata (abfd)->segment_map;
6187 && ((*pm)->p_type == PT_PHDR
6188 || (*pm)->p_type == PT_INTERP))
6196 /* For IRIX 6, we don't have .mdebug sections, nor does anything but
6197 .dynamic end up in PT_DYNAMIC. However, we do have to insert a
6198 PT_OPTIONS segment immediately following the program header
6201 /* On non-IRIX6 new abi, we'll have already created a segment
6202 for this section, so don't create another. I'm not sure this
6203 is not also the case for IRIX 6, but I can't test it right
6205 && IRIX_COMPAT (abfd) == ict_irix6)
6207 for (s = abfd->sections; s; s = s->next)
6208 if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
6213 struct elf_segment_map *options_segment;
6215 /* Usually, there's a program header table. But, sometimes
6216 there's not (like when running the `ld' testsuite). So,
6217 if there's no program header table, we just put the
6218 options segment at the end. */
6219 for (pm = &elf_tdata (abfd)->segment_map;
6222 if ((*pm)->p_type == PT_PHDR)
6225 amt = sizeof (struct elf_segment_map);
6226 options_segment = bfd_zalloc (abfd, amt);
6227 options_segment->next = *pm;
6228 options_segment->p_type = PT_MIPS_OPTIONS;
6229 options_segment->p_flags = PF_R;
6230 options_segment->p_flags_valid = TRUE;
6231 options_segment->count = 1;
6232 options_segment->sections[0] = s;
6233 *pm = options_segment;
6238 if (IRIX_COMPAT (abfd) == ict_irix5)
6240 /* If there are .dynamic and .mdebug sections, we make a room
6241 for the RTPROC header. FIXME: Rewrite without section names. */
6242 if (bfd_get_section_by_name (abfd, ".interp") == NULL
6243 && bfd_get_section_by_name (abfd, ".dynamic") != NULL
6244 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
6246 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
6247 if (m->p_type == PT_MIPS_RTPROC)
6252 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
6256 m->p_type = PT_MIPS_RTPROC;
6258 s = bfd_get_section_by_name (abfd, ".rtproc");
6263 m->p_flags_valid = 1;
6271 /* We want to put it after the DYNAMIC segment. */
6272 pm = &elf_tdata (abfd)->segment_map;
6273 while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
6283 /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic,
6284 .dynstr, .dynsym, and .hash sections, and everything in
6286 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
6288 if ((*pm)->p_type == PT_DYNAMIC)
6291 if (m != NULL && IRIX_COMPAT (abfd) == ict_none)
6293 /* For a normal mips executable the permissions for the PT_DYNAMIC
6294 segment are read, write and execute. We do that here since
6295 the code in elf.c sets only the read permission. This matters
6296 sometimes for the dynamic linker. */
6297 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
6299 m->p_flags = PF_R | PF_W | PF_X;
6300 m->p_flags_valid = 1;
6304 && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
6306 static const char *sec_names[] =
6308 ".dynamic", ".dynstr", ".dynsym", ".hash"
6312 struct elf_segment_map *n;
6316 for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
6318 s = bfd_get_section_by_name (abfd, sec_names[i]);
6319 if (s != NULL && (s->flags & SEC_LOAD) != 0)
6325 sz = s->_cooked_size;
6328 if (high < s->vma + sz)
6334 for (s = abfd->sections; s != NULL; s = s->next)
6335 if ((s->flags & SEC_LOAD) != 0
6338 + (s->_cooked_size !=
6339 0 ? s->_cooked_size : s->_raw_size)) <= high))
6342 amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *);
6343 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
6350 for (s = abfd->sections; s != NULL; s = s->next)
6352 if ((s->flags & SEC_LOAD) != 0
6355 + (s->_cooked_size != 0 ?
6356 s->_cooked_size : s->_raw_size)) <= high))
6370 /* Return the section that should be marked against GC for a given
6374 _bfd_mips_elf_gc_mark_hook (sec, info, rel, h, sym)
6376 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6377 Elf_Internal_Rela *rel;
6378 struct elf_link_hash_entry *h;
6379 Elf_Internal_Sym *sym;
6381 /* ??? Do mips16 stub sections need to be handled special? */
6385 switch (ELF_R_TYPE (sec->owner, rel->r_info))
6387 case R_MIPS_GNU_VTINHERIT:
6388 case R_MIPS_GNU_VTENTRY:
6392 switch (h->root.type)
6394 case bfd_link_hash_defined:
6395 case bfd_link_hash_defweak:
6396 return h->root.u.def.section;
6398 case bfd_link_hash_common:
6399 return h->root.u.c.p->section;
6407 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6412 /* Update the got entry reference counts for the section being removed. */
6415 _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
6416 bfd *abfd ATTRIBUTE_UNUSED;
6417 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6418 asection *sec ATTRIBUTE_UNUSED;
6419 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
6422 Elf_Internal_Shdr *symtab_hdr;
6423 struct elf_link_hash_entry **sym_hashes;
6424 bfd_signed_vma *local_got_refcounts;
6425 const Elf_Internal_Rela *rel, *relend;
6426 unsigned long r_symndx;
6427 struct elf_link_hash_entry *h;
6429 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6430 sym_hashes = elf_sym_hashes (abfd);
6431 local_got_refcounts = elf_local_got_refcounts (abfd);
6433 relend = relocs + sec->reloc_count;
6434 for (rel = relocs; rel < relend; rel++)
6435 switch (ELF_R_TYPE (abfd, rel->r_info))
6439 case R_MIPS_CALL_HI16:
6440 case R_MIPS_CALL_LO16:
6441 case R_MIPS_GOT_HI16:
6442 case R_MIPS_GOT_LO16:
6443 case R_MIPS_GOT_DISP:
6444 case R_MIPS_GOT_PAGE:
6445 case R_MIPS_GOT_OFST:
6446 /* ??? It would seem that the existing MIPS code does no sort
6447 of reference counting or whatnot on its GOT and PLT entries,
6448 so it is not possible to garbage collect them at this time. */
6459 /* Copy data from a MIPS ELF indirect symbol to its direct symbol,
6460 hiding the old indirect symbol. Process additional relocation
6461 information. Also called for weakdefs, in which case we just let
6462 _bfd_elf_link_hash_copy_indirect copy the flags for us. */
6465 _bfd_mips_elf_copy_indirect_symbol (bed, dir, ind)
6466 struct elf_backend_data *bed;
6467 struct elf_link_hash_entry *dir, *ind;
6469 struct mips_elf_link_hash_entry *dirmips, *indmips;
6471 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
6473 if (ind->root.type != bfd_link_hash_indirect)
6476 dirmips = (struct mips_elf_link_hash_entry *) dir;
6477 indmips = (struct mips_elf_link_hash_entry *) ind;
6478 dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs;
6479 if (indmips->readonly_reloc)
6480 dirmips->readonly_reloc = TRUE;
6481 if (dirmips->min_dyn_reloc_index == 0
6482 || (indmips->min_dyn_reloc_index != 0
6483 && indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index))
6484 dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index;
6485 if (indmips->no_fn_stub)
6486 dirmips->no_fn_stub = TRUE;
6490 _bfd_mips_elf_hide_symbol (info, entry, force_local)
6491 struct bfd_link_info *info;
6492 struct elf_link_hash_entry *entry;
6493 bfd_boolean force_local;
6497 struct mips_got_info *g;
6498 struct mips_elf_link_hash_entry *h;
6500 h = (struct mips_elf_link_hash_entry *) entry;
6501 if (h->forced_local)
6503 h->forced_local = TRUE;
6505 dynobj = elf_hash_table (info)->dynobj;
6506 got = bfd_get_section_by_name (dynobj, ".got");
6507 g = (struct mips_got_info *) elf_section_data (got)->tdata;
6509 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
6511 /* FIXME: Do we allocate too much GOT space here? */
6513 got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
6519 _bfd_mips_elf_discard_info (abfd, cookie, info)
6521 struct elf_reloc_cookie *cookie;
6522 struct bfd_link_info *info;
6525 bfd_boolean ret = FALSE;
6526 unsigned char *tdata;
6529 o = bfd_get_section_by_name (abfd, ".pdr");
6532 if (o->_raw_size == 0)
6534 if (o->_raw_size % PDR_SIZE != 0)
6536 if (o->output_section != NULL
6537 && bfd_is_abs_section (o->output_section))
6540 tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE);
6544 cookie->rels = (MNAME(abfd,_bfd_elf,link_read_relocs)
6545 (abfd, o, (PTR) NULL,
6546 (Elf_Internal_Rela *) NULL,
6547 info->keep_memory));
6554 cookie->rel = cookie->rels;
6555 cookie->relend = cookie->rels + o->reloc_count;
6557 for (i = 0, skip = 0; i < o->_raw_size; i ++)
6559 if (MNAME(abfd,_bfd_elf,reloc_symbol_deleted_p) (i * PDR_SIZE, cookie))
6568 elf_section_data (o)->tdata = tdata;
6569 o->_cooked_size = o->_raw_size - skip * PDR_SIZE;
6575 if (! info->keep_memory)
6576 free (cookie->rels);
6582 _bfd_mips_elf_ignore_discarded_relocs (sec)
6585 if (strcmp (sec->name, ".pdr") == 0)
6591 _bfd_mips_elf_write_section (output_bfd, sec, contents)
6596 bfd_byte *to, *from, *end;
6599 if (strcmp (sec->name, ".pdr") != 0)
6602 if (elf_section_data (sec)->tdata == NULL)
6606 end = contents + sec->_raw_size;
6607 for (from = contents, i = 0;
6609 from += PDR_SIZE, i++)
6611 if (((unsigned char *) elf_section_data (sec)->tdata)[i] == 1)
6614 memcpy (to, from, PDR_SIZE);
6617 bfd_set_section_contents (output_bfd, sec->output_section, contents,
6618 (file_ptr) sec->output_offset,
6623 /* MIPS ELF uses a special find_nearest_line routine in order the
6624 handle the ECOFF debugging information. */
6626 struct mips_elf_find_line
6628 struct ecoff_debug_info d;
6629 struct ecoff_find_line i;
6633 _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
6634 functionname_ptr, line_ptr)
6639 const char **filename_ptr;
6640 const char **functionname_ptr;
6641 unsigned int *line_ptr;
6645 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
6646 filename_ptr, functionname_ptr,
6650 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
6651 filename_ptr, functionname_ptr,
6653 (unsigned) (ABI_64_P (abfd) ? 8 : 0),
6654 &elf_tdata (abfd)->dwarf2_find_line_info))
6657 msec = bfd_get_section_by_name (abfd, ".mdebug");
6661 struct mips_elf_find_line *fi;
6662 const struct ecoff_debug_swap * const swap =
6663 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
6665 /* If we are called during a link, mips_elf_final_link may have
6666 cleared the SEC_HAS_CONTENTS field. We force it back on here
6667 if appropriate (which it normally will be). */
6668 origflags = msec->flags;
6669 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
6670 msec->flags |= SEC_HAS_CONTENTS;
6672 fi = elf_tdata (abfd)->find_line_info;
6675 bfd_size_type external_fdr_size;
6678 struct fdr *fdr_ptr;
6679 bfd_size_type amt = sizeof (struct mips_elf_find_line);
6681 fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
6684 msec->flags = origflags;
6688 if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
6690 msec->flags = origflags;
6694 /* Swap in the FDR information. */
6695 amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
6696 fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
6697 if (fi->d.fdr == NULL)
6699 msec->flags = origflags;
6702 external_fdr_size = swap->external_fdr_size;
6703 fdr_ptr = fi->d.fdr;
6704 fraw_src = (char *) fi->d.external_fdr;
6705 fraw_end = (fraw_src
6706 + fi->d.symbolic_header.ifdMax * external_fdr_size);
6707 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
6708 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
6710 elf_tdata (abfd)->find_line_info = fi;
6712 /* Note that we don't bother to ever free this information.
6713 find_nearest_line is either called all the time, as in
6714 objdump -l, so the information should be saved, or it is
6715 rarely called, as in ld error messages, so the memory
6716 wasted is unimportant. Still, it would probably be a
6717 good idea for free_cached_info to throw it away. */
6720 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
6721 &fi->i, filename_ptr, functionname_ptr,
6724 msec->flags = origflags;
6728 msec->flags = origflags;
6731 /* Fall back on the generic ELF find_nearest_line routine. */
6733 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
6734 filename_ptr, functionname_ptr,
6738 /* When are writing out the .options or .MIPS.options section,
6739 remember the bytes we are writing out, so that we can install the
6740 GP value in the section_processing routine. */
6743 _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
6748 bfd_size_type count;
6750 if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
6754 if (elf_section_data (section) == NULL)
6756 bfd_size_type amt = sizeof (struct bfd_elf_section_data);
6757 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
6758 if (elf_section_data (section) == NULL)
6761 c = (bfd_byte *) elf_section_data (section)->tdata;
6766 if (section->_cooked_size != 0)
6767 size = section->_cooked_size;
6769 size = section->_raw_size;
6770 c = (bfd_byte *) bfd_zalloc (abfd, size);
6773 elf_section_data (section)->tdata = (PTR) c;
6776 memcpy (c + offset, location, (size_t) count);
6779 return _bfd_elf_set_section_contents (abfd, section, location, offset,
6783 /* This is almost identical to bfd_generic_get_... except that some
6784 MIPS relocations need to be handled specially. Sigh. */
6787 _bfd_elf_mips_get_relocated_section_contents (abfd, link_info, link_order,
6788 data, relocateable, symbols)
6790 struct bfd_link_info *link_info;
6791 struct bfd_link_order *link_order;
6793 bfd_boolean relocateable;
6796 /* Get enough memory to hold the stuff */
6797 bfd *input_bfd = link_order->u.indirect.section->owner;
6798 asection *input_section = link_order->u.indirect.section;
6800 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
6801 arelent **reloc_vector = NULL;
6807 reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
6808 if (reloc_vector == NULL && reloc_size != 0)
6811 /* read in the section */
6812 if (!bfd_get_section_contents (input_bfd,
6816 input_section->_raw_size))
6819 /* We're not relaxing the section, so just copy the size info */
6820 input_section->_cooked_size = input_section->_raw_size;
6821 input_section->reloc_done = TRUE;
6823 reloc_count = bfd_canonicalize_reloc (input_bfd,
6827 if (reloc_count < 0)
6830 if (reloc_count > 0)
6835 bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
6838 struct bfd_hash_entry *h;
6839 struct bfd_link_hash_entry *lh;
6840 /* Skip all this stuff if we aren't mixing formats. */
6841 if (abfd && input_bfd
6842 && abfd->xvec == input_bfd->xvec)
6846 h = bfd_hash_lookup (&link_info->hash->table, "_gp", FALSE, FALSE);
6847 lh = (struct bfd_link_hash_entry *) h;
6854 case bfd_link_hash_undefined:
6855 case bfd_link_hash_undefweak:
6856 case bfd_link_hash_common:
6859 case bfd_link_hash_defined:
6860 case bfd_link_hash_defweak:
6862 gp = lh->u.def.value;
6864 case bfd_link_hash_indirect:
6865 case bfd_link_hash_warning:
6867 /* @@FIXME ignoring warning for now */
6869 case bfd_link_hash_new:
6878 for (parent = reloc_vector; *parent != (arelent *) NULL;
6881 char *error_message = (char *) NULL;
6882 bfd_reloc_status_type r;
6884 /* Specific to MIPS: Deal with relocation types that require
6885 knowing the gp of the output bfd. */
6886 asymbol *sym = *(*parent)->sym_ptr_ptr;
6887 if (bfd_is_abs_section (sym->section) && abfd)
6889 /* The special_function wouldn't get called anyway. */
6893 /* The gp isn't there; let the special function code
6894 fall over on its own. */
6896 else if ((*parent)->howto->special_function
6897 == _bfd_mips_elf32_gprel16_reloc)
6899 /* bypass special_function call */
6900 r = _bfd_mips_elf_gprel16_with_gp (input_bfd, sym, *parent,
6901 input_section, relocateable,
6903 goto skip_bfd_perform_relocation;
6905 /* end mips specific stuff */
6907 r = bfd_perform_relocation (input_bfd,
6911 relocateable ? abfd : (bfd *) NULL,
6913 skip_bfd_perform_relocation:
6917 asection *os = input_section->output_section;
6919 /* A partial link, so keep the relocs */
6920 os->orelocation[os->reloc_count] = *parent;
6924 if (r != bfd_reloc_ok)
6928 case bfd_reloc_undefined:
6929 if (!((*link_info->callbacks->undefined_symbol)
6930 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
6931 input_bfd, input_section, (*parent)->address,
6935 case bfd_reloc_dangerous:
6936 BFD_ASSERT (error_message != (char *) NULL);
6937 if (!((*link_info->callbacks->reloc_dangerous)
6938 (link_info, error_message, input_bfd, input_section,
6939 (*parent)->address)))
6942 case bfd_reloc_overflow:
6943 if (!((*link_info->callbacks->reloc_overflow)
6944 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
6945 (*parent)->howto->name, (*parent)->addend,
6946 input_bfd, input_section, (*parent)->address)))
6949 case bfd_reloc_outofrange:
6958 if (reloc_vector != NULL)
6959 free (reloc_vector);
6963 if (reloc_vector != NULL)
6964 free (reloc_vector);
6968 /* Create a MIPS ELF linker hash table. */
6970 struct bfd_link_hash_table *
6971 _bfd_mips_elf_link_hash_table_create (abfd)
6974 struct mips_elf_link_hash_table *ret;
6975 bfd_size_type amt = sizeof (struct mips_elf_link_hash_table);
6977 ret = (struct mips_elf_link_hash_table *) bfd_malloc (amt);
6978 if (ret == (struct mips_elf_link_hash_table *) NULL)
6981 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
6982 mips_elf_link_hash_newfunc))
6989 /* We no longer use this. */
6990 for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
6991 ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
6993 ret->procedure_count = 0;
6994 ret->compact_rel_size = 0;
6995 ret->use_rld_obj_head = FALSE;
6997 ret->mips16_stubs_seen = FALSE;
6999 return &ret->root.root;
7002 /* We need to use a special link routine to handle the .reginfo and
7003 the .mdebug sections. We need to merge all instances of these
7004 sections together, not write them all out sequentially. */
7007 _bfd_mips_elf_final_link (abfd, info)
7009 struct bfd_link_info *info;
7013 struct bfd_link_order *p;
7014 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
7015 asection *rtproc_sec;
7016 Elf32_RegInfo reginfo;
7017 struct ecoff_debug_info debug;
7018 const struct ecoff_debug_swap *swap
7019 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
7020 HDRR *symhdr = &debug.symbolic_header;
7021 PTR mdebug_handle = NULL;
7027 static const char * const secname[] =
7029 ".text", ".init", ".fini", ".data",
7030 ".rodata", ".sdata", ".sbss", ".bss"
7032 static const int sc[] =
7034 scText, scInit, scFini, scData,
7035 scRData, scSData, scSBss, scBss
7038 /* If all the things we linked together were PIC, but we're
7039 producing an executable (rather than a shared object), then the
7040 resulting file is CPIC (i.e., it calls PIC code.) */
7042 && !info->relocateable
7043 && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
7045 elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
7046 elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
7049 /* We'd carefully arranged the dynamic symbol indices, and then the
7050 generic size_dynamic_sections renumbered them out from under us.
7051 Rather than trying somehow to prevent the renumbering, just do
7053 if (elf_hash_table (info)->dynamic_sections_created)
7057 struct mips_got_info *g;
7059 /* When we resort, we must tell mips_elf_sort_hash_table what
7060 the lowest index it may use is. That's the number of section
7061 symbols we're going to add. The generic ELF linker only
7062 adds these symbols when building a shared object. Note that
7063 we count the sections after (possibly) removing the .options
7065 if (! mips_elf_sort_hash_table (info, (info->shared
7066 ? bfd_count_sections (abfd) + 1
7070 /* Make sure we didn't grow the global .got region. */
7071 dynobj = elf_hash_table (info)->dynobj;
7072 got = bfd_get_section_by_name (dynobj, ".got");
7073 g = (struct mips_got_info *) elf_section_data (got)->tdata;
7075 if (g->global_gotsym != NULL)
7076 BFD_ASSERT ((elf_hash_table (info)->dynsymcount
7077 - g->global_gotsym->dynindx)
7078 <= g->global_gotno);
7082 /* We want to set the GP value for ld -r. */
7083 /* On IRIX5, we omit the .options section. On IRIX6, however, we
7084 include it, even though we don't process it quite right. (Some
7085 entries are supposed to be merged.) Empirically, we seem to be
7086 better off including it then not. */
7087 if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
7088 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
7090 if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
7092 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
7093 if (p->type == bfd_indirect_link_order)
7094 p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS;
7095 (*secpp)->link_order_head = NULL;
7096 bfd_section_list_remove (abfd, secpp);
7097 --abfd->section_count;
7103 /* We include .MIPS.options, even though we don't process it quite right.
7104 (Some entries are supposed to be merged.) At IRIX6 empirically we seem
7105 to be better off including it than not. */
7106 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
7108 if (strcmp ((*secpp)->name, ".MIPS.options") == 0)
7110 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
7111 if (p->type == bfd_indirect_link_order)
7112 p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS;
7113 (*secpp)->link_order_head = NULL;
7114 bfd_section_list_remove (abfd, secpp);
7115 --abfd->section_count;
7122 /* Get a value for the GP register. */
7123 if (elf_gp (abfd) == 0)
7125 struct bfd_link_hash_entry *h;
7127 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
7128 if (h != (struct bfd_link_hash_entry *) NULL
7129 && h->type == bfd_link_hash_defined)
7130 elf_gp (abfd) = (h->u.def.value
7131 + h->u.def.section->output_section->vma
7132 + h->u.def.section->output_offset);
7133 else if (info->relocateable)
7135 bfd_vma lo = MINUS_ONE;
7137 /* Find the GP-relative section with the lowest offset. */
7138 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
7140 && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
7143 /* And calculate GP relative to that. */
7144 elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
7148 /* If the relocate_section function needs to do a reloc
7149 involving the GP value, it should make a reloc_dangerous
7150 callback to warn that GP is not defined. */
7154 /* Go through the sections and collect the .reginfo and .mdebug
7158 gptab_data_sec = NULL;
7159 gptab_bss_sec = NULL;
7160 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
7162 if (strcmp (o->name, ".reginfo") == 0)
7164 memset (®info, 0, sizeof reginfo);
7166 /* We have found the .reginfo section in the output file.
7167 Look through all the link_orders comprising it and merge
7168 the information together. */
7169 for (p = o->link_order_head;
7170 p != (struct bfd_link_order *) NULL;
7173 asection *input_section;
7175 Elf32_External_RegInfo ext;
7178 if (p->type != bfd_indirect_link_order)
7180 if (p->type == bfd_data_link_order)
7185 input_section = p->u.indirect.section;
7186 input_bfd = input_section->owner;
7188 /* The linker emulation code has probably clobbered the
7189 size to be zero bytes. */
7190 if (input_section->_raw_size == 0)
7191 input_section->_raw_size = sizeof (Elf32_External_RegInfo);
7193 if (! bfd_get_section_contents (input_bfd, input_section,
7196 (bfd_size_type) sizeof ext))
7199 bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
7201 reginfo.ri_gprmask |= sub.ri_gprmask;
7202 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
7203 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
7204 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
7205 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
7207 /* ri_gp_value is set by the function
7208 mips_elf32_section_processing when the section is
7209 finally written out. */
7211 /* Hack: reset the SEC_HAS_CONTENTS flag so that
7212 elf_link_input_bfd ignores this section. */
7213 input_section->flags &= ~SEC_HAS_CONTENTS;
7216 /* Size has been set in _bfd_mips_elf_always_size_sections. */
7217 BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
7219 /* Skip this section later on (I don't think this currently
7220 matters, but someday it might). */
7221 o->link_order_head = (struct bfd_link_order *) NULL;
7226 if (strcmp (o->name, ".mdebug") == 0)
7228 struct extsym_info einfo;
7231 /* We have found the .mdebug section in the output file.
7232 Look through all the link_orders comprising it and merge
7233 the information together. */
7234 symhdr->magic = swap->sym_magic;
7235 /* FIXME: What should the version stamp be? */
7237 symhdr->ilineMax = 0;
7241 symhdr->isymMax = 0;
7242 symhdr->ioptMax = 0;
7243 symhdr->iauxMax = 0;
7245 symhdr->issExtMax = 0;
7248 symhdr->iextMax = 0;
7250 /* We accumulate the debugging information itself in the
7251 debug_info structure. */
7253 debug.external_dnr = NULL;
7254 debug.external_pdr = NULL;
7255 debug.external_sym = NULL;
7256 debug.external_opt = NULL;
7257 debug.external_aux = NULL;
7259 debug.ssext = debug.ssext_end = NULL;
7260 debug.external_fdr = NULL;
7261 debug.external_rfd = NULL;
7262 debug.external_ext = debug.external_ext_end = NULL;
7264 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
7265 if (mdebug_handle == (PTR) NULL)
7269 esym.cobol_main = 0;
7273 esym.asym.iss = issNil;
7274 esym.asym.st = stLocal;
7275 esym.asym.reserved = 0;
7276 esym.asym.index = indexNil;
7278 for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++)
7280 esym.asym.sc = sc[i];
7281 s = bfd_get_section_by_name (abfd, secname[i]);
7284 esym.asym.value = s->vma;
7285 last = s->vma + s->_raw_size;
7288 esym.asym.value = last;
7289 if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
7294 for (p = o->link_order_head;
7295 p != (struct bfd_link_order *) NULL;
7298 asection *input_section;
7300 const struct ecoff_debug_swap *input_swap;
7301 struct ecoff_debug_info input_debug;
7305 if (p->type != bfd_indirect_link_order)
7307 if (p->type == bfd_data_link_order)
7312 input_section = p->u.indirect.section;
7313 input_bfd = input_section->owner;
7315 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
7316 || (get_elf_backend_data (input_bfd)
7317 ->elf_backend_ecoff_debug_swap) == NULL)
7319 /* I don't know what a non MIPS ELF bfd would be
7320 doing with a .mdebug section, but I don't really
7321 want to deal with it. */
7325 input_swap = (get_elf_backend_data (input_bfd)
7326 ->elf_backend_ecoff_debug_swap);
7328 BFD_ASSERT (p->size == input_section->_raw_size);
7330 /* The ECOFF linking code expects that we have already
7331 read in the debugging information and set up an
7332 ecoff_debug_info structure, so we do that now. */
7333 if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
7337 if (! (bfd_ecoff_debug_accumulate
7338 (mdebug_handle, abfd, &debug, swap, input_bfd,
7339 &input_debug, input_swap, info)))
7342 /* Loop through the external symbols. For each one with
7343 interesting information, try to find the symbol in
7344 the linker global hash table and save the information
7345 for the output external symbols. */
7346 eraw_src = input_debug.external_ext;
7347 eraw_end = (eraw_src
7348 + (input_debug.symbolic_header.iextMax
7349 * input_swap->external_ext_size));
7351 eraw_src < eraw_end;
7352 eraw_src += input_swap->external_ext_size)
7356 struct mips_elf_link_hash_entry *h;
7358 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
7359 if (ext.asym.sc == scNil
7360 || ext.asym.sc == scUndefined
7361 || ext.asym.sc == scSUndefined)
7364 name = input_debug.ssext + ext.asym.iss;
7365 h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
7366 name, FALSE, FALSE, TRUE);
7367 if (h == NULL || h->esym.ifd != -2)
7373 < input_debug.symbolic_header.ifdMax);
7374 ext.ifd = input_debug.ifdmap[ext.ifd];
7380 /* Free up the information we just read. */
7381 free (input_debug.line);
7382 free (input_debug.external_dnr);
7383 free (input_debug.external_pdr);
7384 free (input_debug.external_sym);
7385 free (input_debug.external_opt);
7386 free (input_debug.external_aux);
7387 free (input_debug.ss);
7388 free (input_debug.ssext);
7389 free (input_debug.external_fdr);
7390 free (input_debug.external_rfd);
7391 free (input_debug.external_ext);
7393 /* Hack: reset the SEC_HAS_CONTENTS flag so that
7394 elf_link_input_bfd ignores this section. */
7395 input_section->flags &= ~SEC_HAS_CONTENTS;
7398 if (SGI_COMPAT (abfd) && info->shared)
7400 /* Create .rtproc section. */
7401 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
7402 if (rtproc_sec == NULL)
7404 flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
7405 | SEC_LINKER_CREATED | SEC_READONLY);
7407 rtproc_sec = bfd_make_section (abfd, ".rtproc");
7408 if (rtproc_sec == NULL
7409 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
7410 || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
7414 if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
7420 /* Build the external symbol information. */
7423 einfo.debug = &debug;
7425 einfo.failed = FALSE;
7426 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
7427 mips_elf_output_extsym,
7432 /* Set the size of the .mdebug section. */
7433 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
7435 /* Skip this section later on (I don't think this currently
7436 matters, but someday it might). */
7437 o->link_order_head = (struct bfd_link_order *) NULL;
7442 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
7444 const char *subname;
7447 Elf32_External_gptab *ext_tab;
7450 /* The .gptab.sdata and .gptab.sbss sections hold
7451 information describing how the small data area would
7452 change depending upon the -G switch. These sections
7453 not used in executables files. */
7454 if (! info->relocateable)
7456 for (p = o->link_order_head;
7457 p != (struct bfd_link_order *) NULL;
7460 asection *input_section;
7462 if (p->type != bfd_indirect_link_order)
7464 if (p->type == bfd_data_link_order)
7469 input_section = p->u.indirect.section;
7471 /* Hack: reset the SEC_HAS_CONTENTS flag so that
7472 elf_link_input_bfd ignores this section. */
7473 input_section->flags &= ~SEC_HAS_CONTENTS;
7476 /* Skip this section later on (I don't think this
7477 currently matters, but someday it might). */
7478 o->link_order_head = (struct bfd_link_order *) NULL;
7480 /* Really remove the section. */
7481 for (secpp = &abfd->sections;
7483 secpp = &(*secpp)->next)
7485 bfd_section_list_remove (abfd, secpp);
7486 --abfd->section_count;
7491 /* There is one gptab for initialized data, and one for
7492 uninitialized data. */
7493 if (strcmp (o->name, ".gptab.sdata") == 0)
7495 else if (strcmp (o->name, ".gptab.sbss") == 0)
7499 (*_bfd_error_handler)
7500 (_("%s: illegal section name `%s'"),
7501 bfd_get_filename (abfd), o->name);
7502 bfd_set_error (bfd_error_nonrepresentable_section);
7506 /* The linker script always combines .gptab.data and
7507 .gptab.sdata into .gptab.sdata, and likewise for
7508 .gptab.bss and .gptab.sbss. It is possible that there is
7509 no .sdata or .sbss section in the output file, in which
7510 case we must change the name of the output section. */
7511 subname = o->name + sizeof ".gptab" - 1;
7512 if (bfd_get_section_by_name (abfd, subname) == NULL)
7514 if (o == gptab_data_sec)
7515 o->name = ".gptab.data";
7517 o->name = ".gptab.bss";
7518 subname = o->name + sizeof ".gptab" - 1;
7519 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
7522 /* Set up the first entry. */
7524 amt = c * sizeof (Elf32_gptab);
7525 tab = (Elf32_gptab *) bfd_malloc (amt);
7528 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
7529 tab[0].gt_header.gt_unused = 0;
7531 /* Combine the input sections. */
7532 for (p = o->link_order_head;
7533 p != (struct bfd_link_order *) NULL;
7536 asection *input_section;
7540 bfd_size_type gpentry;
7542 if (p->type != bfd_indirect_link_order)
7544 if (p->type == bfd_data_link_order)
7549 input_section = p->u.indirect.section;
7550 input_bfd = input_section->owner;
7552 /* Combine the gptab entries for this input section one
7553 by one. We know that the input gptab entries are
7554 sorted by ascending -G value. */
7555 size = bfd_section_size (input_bfd, input_section);
7557 for (gpentry = sizeof (Elf32_External_gptab);
7559 gpentry += sizeof (Elf32_External_gptab))
7561 Elf32_External_gptab ext_gptab;
7562 Elf32_gptab int_gptab;
7568 if (! (bfd_get_section_contents
7569 (input_bfd, input_section, (PTR) &ext_gptab,
7571 (bfd_size_type) sizeof (Elf32_External_gptab))))
7577 bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
7579 val = int_gptab.gt_entry.gt_g_value;
7580 add = int_gptab.gt_entry.gt_bytes - last;
7583 for (look = 1; look < c; look++)
7585 if (tab[look].gt_entry.gt_g_value >= val)
7586 tab[look].gt_entry.gt_bytes += add;
7588 if (tab[look].gt_entry.gt_g_value == val)
7594 Elf32_gptab *new_tab;
7597 /* We need a new table entry. */
7598 amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab);
7599 new_tab = (Elf32_gptab *) bfd_realloc ((PTR) tab, amt);
7600 if (new_tab == NULL)
7606 tab[c].gt_entry.gt_g_value = val;
7607 tab[c].gt_entry.gt_bytes = add;
7609 /* Merge in the size for the next smallest -G
7610 value, since that will be implied by this new
7613 for (look = 1; look < c; look++)
7615 if (tab[look].gt_entry.gt_g_value < val
7617 || (tab[look].gt_entry.gt_g_value
7618 > tab[max].gt_entry.gt_g_value)))
7622 tab[c].gt_entry.gt_bytes +=
7623 tab[max].gt_entry.gt_bytes;
7628 last = int_gptab.gt_entry.gt_bytes;
7631 /* Hack: reset the SEC_HAS_CONTENTS flag so that
7632 elf_link_input_bfd ignores this section. */
7633 input_section->flags &= ~SEC_HAS_CONTENTS;
7636 /* The table must be sorted by -G value. */
7638 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
7640 /* Swap out the table. */
7641 amt = (bfd_size_type) c * sizeof (Elf32_External_gptab);
7642 ext_tab = (Elf32_External_gptab *) bfd_alloc (abfd, amt);
7643 if (ext_tab == NULL)
7649 for (j = 0; j < c; j++)
7650 bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j);
7653 o->_raw_size = c * sizeof (Elf32_External_gptab);
7654 o->contents = (bfd_byte *) ext_tab;
7656 /* Skip this section later on (I don't think this currently
7657 matters, but someday it might). */
7658 o->link_order_head = (struct bfd_link_order *) NULL;
7662 /* Invoke the regular ELF backend linker to do all the work. */
7663 if (!MNAME(abfd,bfd_elf,bfd_final_link) (abfd, info))
7666 /* Now write out the computed sections. */
7668 if (reginfo_sec != (asection *) NULL)
7670 Elf32_External_RegInfo ext;
7672 bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
7673 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
7675 (bfd_size_type) sizeof ext))
7679 if (mdebug_sec != (asection *) NULL)
7681 BFD_ASSERT (abfd->output_has_begun);
7682 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
7684 mdebug_sec->filepos))
7687 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
7690 if (gptab_data_sec != (asection *) NULL)
7692 if (! bfd_set_section_contents (abfd, gptab_data_sec,
7693 gptab_data_sec->contents,
7695 gptab_data_sec->_raw_size))
7699 if (gptab_bss_sec != (asection *) NULL)
7701 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
7702 gptab_bss_sec->contents,
7704 gptab_bss_sec->_raw_size))
7708 if (SGI_COMPAT (abfd))
7710 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
7711 if (rtproc_sec != NULL)
7713 if (! bfd_set_section_contents (abfd, rtproc_sec,
7714 rtproc_sec->contents,
7716 rtproc_sec->_raw_size))
7724 /* Structure for saying that BFD machine EXTENSION extends BASE. */
7726 struct mips_mach_extension {
7727 unsigned long extension, base;
7731 /* An array describing how BFD machines relate to one another. The entries
7732 are ordered topologically with MIPS I extensions listed last. */
7734 static const struct mips_mach_extension mips_mach_extensions[] = {
7735 /* MIPS64 extensions. */
7736 { bfd_mach_mips_sb1, bfd_mach_mipsisa64 },
7738 /* MIPS V extensions. */
7739 { bfd_mach_mipsisa64, bfd_mach_mips5 },
7741 /* R10000 extensions. */
7742 { bfd_mach_mips12000, bfd_mach_mips10000 },
7744 /* R5000 extensions. Note: the vr5500 ISA is an extension of the core
7745 vr5400 ISA, but doesn't include the multimedia stuff. It seems
7746 better to allow vr5400 and vr5500 code to be merged anyway, since
7747 many libraries will just use the core ISA. Perhaps we could add
7748 some sort of ASE flag if this ever proves a problem. */
7749 { bfd_mach_mips5500, bfd_mach_mips5400 },
7750 { bfd_mach_mips5400, bfd_mach_mips5000 },
7752 /* MIPS IV extensions. */
7753 { bfd_mach_mips5, bfd_mach_mips8000 },
7754 { bfd_mach_mips10000, bfd_mach_mips8000 },
7755 { bfd_mach_mips5000, bfd_mach_mips8000 },
7757 /* VR4100 extensions. */
7758 { bfd_mach_mips4120, bfd_mach_mips4100 },
7759 { bfd_mach_mips4111, bfd_mach_mips4100 },
7761 /* MIPS III extensions. */
7762 { bfd_mach_mips8000, bfd_mach_mips4000 },
7763 { bfd_mach_mips4650, bfd_mach_mips4000 },
7764 { bfd_mach_mips4600, bfd_mach_mips4000 },
7765 { bfd_mach_mips4400, bfd_mach_mips4000 },
7766 { bfd_mach_mips4300, bfd_mach_mips4000 },
7767 { bfd_mach_mips4100, bfd_mach_mips4000 },
7768 { bfd_mach_mips4010, bfd_mach_mips4000 },
7770 /* MIPS32 extensions. */
7771 { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 },
7773 /* MIPS II extensions. */
7774 { bfd_mach_mips4000, bfd_mach_mips6000 },
7775 { bfd_mach_mipsisa32, bfd_mach_mips6000 },
7777 /* MIPS I extensions. */
7778 { bfd_mach_mips6000, bfd_mach_mips3000 },
7779 { bfd_mach_mips3900, bfd_mach_mips3000 }
7783 /* Return true if bfd machine EXTENSION is an extension of machine BASE. */
7786 mips_mach_extends_p (base, extension)
7787 unsigned long base, extension;
7791 for (i = 0; extension != base && i < ARRAY_SIZE (mips_mach_extensions); i++)
7792 if (extension == mips_mach_extensions[i].extension)
7793 extension = mips_mach_extensions[i].base;
7795 return extension == base;
7799 /* Return true if the given ELF header flags describe a 32-bit binary. */
7802 mips_32bit_flags_p (flags)
7805 return ((flags & EF_MIPS_32BITMODE) != 0
7806 || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32
7807 || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32
7808 || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1
7809 || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2
7810 || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32
7811 || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2);
7815 /* Merge backend specific data from an object file to the output
7816 object file when linking. */
7819 _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
7826 bfd_boolean null_input_bfd = TRUE;
7829 /* Check if we have the same endianess */
7830 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
7833 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
7834 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
7837 new_flags = elf_elfheader (ibfd)->e_flags;
7838 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
7839 old_flags = elf_elfheader (obfd)->e_flags;
7841 if (! elf_flags_init (obfd))
7843 elf_flags_init (obfd) = TRUE;
7844 elf_elfheader (obfd)->e_flags = new_flags;
7845 elf_elfheader (obfd)->e_ident[EI_CLASS]
7846 = elf_elfheader (ibfd)->e_ident[EI_CLASS];
7848 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7849 && bfd_get_arch_info (obfd)->the_default)
7851 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
7852 bfd_get_mach (ibfd)))
7859 /* Check flag compatibility. */
7861 new_flags &= ~EF_MIPS_NOREORDER;
7862 old_flags &= ~EF_MIPS_NOREORDER;
7864 if (new_flags == old_flags)
7867 /* Check to see if the input BFD actually contains any sections.
7868 If not, its flags may not have been initialised either, but it cannot
7869 actually cause any incompatibility. */
7870 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7872 /* Ignore synthetic sections and empty .text, .data and .bss sections
7873 which are automatically generated by gas. */
7874 if (strcmp (sec->name, ".reginfo")
7875 && strcmp (sec->name, ".mdebug")
7876 && ((!strcmp (sec->name, ".text")
7877 || !strcmp (sec->name, ".data")
7878 || !strcmp (sec->name, ".bss"))
7879 && sec->_raw_size != 0))
7881 null_input_bfd = FALSE;
7890 if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
7892 new_flags &= ~EF_MIPS_PIC;
7893 old_flags &= ~EF_MIPS_PIC;
7894 (*_bfd_error_handler)
7895 (_("%s: linking PIC files with non-PIC files"),
7896 bfd_archive_filename (ibfd));
7900 if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
7902 new_flags &= ~EF_MIPS_CPIC;
7903 old_flags &= ~EF_MIPS_CPIC;
7904 (*_bfd_error_handler)
7905 (_("%s: linking abicalls files with non-abicalls files"),
7906 bfd_archive_filename (ibfd));
7910 /* Compare the ISAs. */
7911 if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags))
7913 (*_bfd_error_handler)
7914 (_("%s: linking 32-bit code with 64-bit code"),
7915 bfd_archive_filename (ibfd));
7918 else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd)))
7920 /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */
7921 if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd)))
7923 /* Copy the architecture info from IBFD to OBFD. Also copy
7924 the 32-bit flag (if set) so that we continue to recognise
7925 OBFD as a 32-bit binary. */
7926 bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd));
7927 elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
7928 elf_elfheader (obfd)->e_flags
7929 |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE);
7931 /* Copy across the ABI flags if OBFD doesn't use them
7932 and if that was what caused us to treat IBFD as 32-bit. */
7933 if ((old_flags & EF_MIPS_ABI) == 0
7934 && mips_32bit_flags_p (new_flags)
7935 && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI))
7936 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI;
7940 /* The ISAs aren't compatible. */
7941 (*_bfd_error_handler)
7942 (_("%s: linking %s module with previous %s modules"),
7943 bfd_archive_filename (ibfd),
7944 bfd_printable_name (ibfd),
7945 bfd_printable_name (obfd));
7950 new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE);
7951 old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE);
7953 /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it
7954 does set EI_CLASS differently from any 32-bit ABI. */
7955 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
7956 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
7957 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
7959 /* Only error if both are set (to different values). */
7960 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
7961 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
7962 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
7964 (*_bfd_error_handler)
7965 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
7966 bfd_archive_filename (ibfd),
7967 elf_mips_abi_name (ibfd),
7968 elf_mips_abi_name (obfd));
7971 new_flags &= ~EF_MIPS_ABI;
7972 old_flags &= ~EF_MIPS_ABI;
7975 /* For now, allow arbitrary mixing of ASEs (retain the union). */
7976 if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE))
7978 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE;
7980 new_flags &= ~ EF_MIPS_ARCH_ASE;
7981 old_flags &= ~ EF_MIPS_ARCH_ASE;
7984 /* Warn about any other mismatches */
7985 if (new_flags != old_flags)
7987 (*_bfd_error_handler)
7988 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
7989 bfd_archive_filename (ibfd), (unsigned long) new_flags,
7990 (unsigned long) old_flags);
7996 bfd_set_error (bfd_error_bad_value);
8003 /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
8006 _bfd_mips_elf_set_private_flags (abfd, flags)
8010 BFD_ASSERT (!elf_flags_init (abfd)
8011 || elf_elfheader (abfd)->e_flags == flags);
8013 elf_elfheader (abfd)->e_flags = flags;
8014 elf_flags_init (abfd) = TRUE;
8019 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
8023 FILE *file = (FILE *) ptr;
8025 BFD_ASSERT (abfd != NULL && ptr != NULL);
8027 /* Print normal ELF private data. */
8028 _bfd_elf_print_private_bfd_data (abfd, ptr);
8030 /* xgettext:c-format */
8031 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
8033 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
8034 fprintf (file, _(" [abi=O32]"));
8035 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
8036 fprintf (file, _(" [abi=O64]"));
8037 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
8038 fprintf (file, _(" [abi=EABI32]"));
8039 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
8040 fprintf (file, _(" [abi=EABI64]"));
8041 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
8042 fprintf (file, _(" [abi unknown]"));
8043 else if (ABI_N32_P (abfd))
8044 fprintf (file, _(" [abi=N32]"));
8045 else if (ABI_64_P (abfd))
8046 fprintf (file, _(" [abi=64]"));
8048 fprintf (file, _(" [no abi set]"));
8050 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
8051 fprintf (file, _(" [mips1]"));
8052 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
8053 fprintf (file, _(" [mips2]"));
8054 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
8055 fprintf (file, _(" [mips3]"));
8056 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
8057 fprintf (file, _(" [mips4]"));
8058 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
8059 fprintf (file, _(" [mips5]"));
8060 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
8061 fprintf (file, _(" [mips32]"));
8062 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
8063 fprintf (file, _(" [mips64]"));
8064 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2)
8065 fprintf (file, _(" [mips32r2]"));
8067 fprintf (file, _(" [unknown ISA]"));
8069 if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX)
8070 fprintf (file, _(" [mdmx]"));
8072 if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16)
8073 fprintf (file, _(" [mips16]"));
8075 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
8076 fprintf (file, _(" [32bitmode]"));
8078 fprintf (file, _(" [not 32bitmode]"));