1 /* MIPS-specific support for ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 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. */
34 #include "elfxx-mips.h"
37 /* Get the ECOFF swapping routines. */
39 #include "coff/symconst.h"
40 #include "coff/ecoff.h"
41 #include "coff/mips.h"
45 /* This structure is used to hold .got entries while estimating got
49 /* The input bfd in which the symbol is defined. */
51 /* The index of the symbol, as stored in the relocation r_info. If
52 it's -1, the addend is a complete address into the
53 executable/shared library. */
55 /* The addend of the relocation that should be added to the symbol
58 /* The offset from the beginning of the .got section to the entry
59 corresponding to this symbol+addend. */
63 /* This structure is used to hold .got information when linking. It
64 is stored in the tdata field of the bfd_elf_section_data structure. */
68 /* The global symbol in the GOT with the lowest index in the dynamic
70 struct elf_link_hash_entry *global_gotsym;
71 /* The number of global .got entries. */
72 unsigned int global_gotno;
73 /* The number of local .got entries. */
74 unsigned int local_gotno;
75 /* The number of local .got entries we have used. */
76 unsigned int assigned_gotno;
77 /* A hash table holding members of the got. */
78 struct htab *got_entries;
81 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
82 the dynamic symbols. */
84 struct mips_elf_hash_sort_data
86 /* The symbol in the global GOT with the lowest dynamic symbol table
88 struct elf_link_hash_entry *low;
89 /* The least dynamic symbol table index corresponding to a symbol
92 /* The greatest dynamic symbol table index not corresponding to a
93 symbol without a GOT entry. */
94 long max_non_got_dynindx;
97 /* The MIPS ELF linker needs additional information for each symbol in
98 the global hash table. */
100 struct mips_elf_link_hash_entry
102 struct elf_link_hash_entry root;
104 /* External symbol information. */
107 /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
109 unsigned int possibly_dynamic_relocs;
111 /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against
112 a readonly section. */
113 bfd_boolean readonly_reloc;
115 /* The index of the first dynamic relocation (in the .rel.dyn
116 section) against this symbol. */
117 unsigned int min_dyn_reloc_index;
119 /* We must not create a stub for a symbol that has relocations
120 related to taking the function's address, i.e. any but
121 R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition",
123 bfd_boolean no_fn_stub;
125 /* If there is a stub that 32 bit functions should use to call this
126 16 bit function, this points to the section containing the stub. */
129 /* Whether we need the fn_stub; this is set if this symbol appears
130 in any relocs other than a 16 bit call. */
131 bfd_boolean need_fn_stub;
133 /* If there is a stub that 16 bit functions should use to call this
134 32 bit function, this points to the section containing the stub. */
137 /* This is like the call_stub field, but it is used if the function
138 being called returns a floating point value. */
139 asection *call_fp_stub;
141 /* Are we forced local? .*/
142 bfd_boolean forced_local;
145 /* MIPS ELF linker hash table. */
147 struct mips_elf_link_hash_table
149 struct elf_link_hash_table root;
151 /* We no longer use this. */
152 /* String section indices for the dynamic section symbols. */
153 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
155 /* The number of .rtproc entries. */
156 bfd_size_type procedure_count;
157 /* The size of the .compact_rel section (if SGI_COMPAT). */
158 bfd_size_type compact_rel_size;
159 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
160 entry is set to the address of __rld_obj_head as in IRIX5. */
161 bfd_boolean use_rld_obj_head;
162 /* This is the value of the __rld_map or __rld_obj_head symbol. */
164 /* This is set if we see any mips16 stub sections. */
165 bfd_boolean mips16_stubs_seen;
168 /* Structure used to pass information to mips_elf_output_extsym. */
173 struct bfd_link_info *info;
174 struct ecoff_debug_info *debug;
175 const struct ecoff_debug_swap *swap;
179 /* The names of the runtime procedure table symbols used on IRIX5. */
181 static const char * const mips_elf_dynsym_rtproc_names[] =
184 "_procedure_string_table",
185 "_procedure_table_size",
189 /* These structures are used to generate the .compact_rel section on
194 unsigned long id1; /* Always one? */
195 unsigned long num; /* Number of compact relocation entries. */
196 unsigned long id2; /* Always two? */
197 unsigned long offset; /* The file offset of the first relocation. */
198 unsigned long reserved0; /* Zero? */
199 unsigned long reserved1; /* Zero? */
208 bfd_byte reserved0[4];
209 bfd_byte reserved1[4];
210 } Elf32_External_compact_rel;
214 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
215 unsigned int rtype : 4; /* Relocation types. See below. */
216 unsigned int dist2to : 8;
217 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
218 unsigned long konst; /* KONST field. See below. */
219 unsigned long vaddr; /* VADDR to be relocated. */
224 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
225 unsigned int rtype : 4; /* Relocation types. See below. */
226 unsigned int dist2to : 8;
227 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
228 unsigned long konst; /* KONST field. See below. */
236 } Elf32_External_crinfo;
242 } Elf32_External_crinfo2;
244 /* These are the constants used to swap the bitfields in a crinfo. */
246 #define CRINFO_CTYPE (0x1)
247 #define CRINFO_CTYPE_SH (31)
248 #define CRINFO_RTYPE (0xf)
249 #define CRINFO_RTYPE_SH (27)
250 #define CRINFO_DIST2TO (0xff)
251 #define CRINFO_DIST2TO_SH (19)
252 #define CRINFO_RELVADDR (0x7ffff)
253 #define CRINFO_RELVADDR_SH (0)
255 /* A compact relocation info has long (3 words) or short (2 words)
256 formats. A short format doesn't have VADDR field and relvaddr
257 fields contains ((VADDR - vaddr of the previous entry) >> 2). */
258 #define CRF_MIPS_LONG 1
259 #define CRF_MIPS_SHORT 0
261 /* There are 4 types of compact relocation at least. The value KONST
262 has different meaning for each type:
265 CT_MIPS_REL32 Address in data
266 CT_MIPS_WORD Address in word (XXX)
267 CT_MIPS_GPHI_LO GP - vaddr
268 CT_MIPS_JMPAD Address to jump
271 #define CRT_MIPS_REL32 0xa
272 #define CRT_MIPS_WORD 0xb
273 #define CRT_MIPS_GPHI_LO 0xc
274 #define CRT_MIPS_JMPAD 0xd
276 #define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
277 #define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
278 #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
279 #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
281 /* The structure of the runtime procedure descriptor created by the
282 loader for use by the static exception system. */
284 typedef struct runtime_pdr {
285 bfd_vma adr; /* memory address of start of procedure */
286 long regmask; /* save register mask */
287 long regoffset; /* save register offset */
288 long fregmask; /* save floating point register mask */
289 long fregoffset; /* save floating point register offset */
290 long frameoffset; /* frame size */
291 short framereg; /* frame pointer register */
292 short pcreg; /* offset or reg of return pc */
293 long irpss; /* index into the runtime string table */
295 struct exception_info *exception_info;/* pointer to exception array */
297 #define cbRPDR sizeof (RPDR)
298 #define rpdNil ((pRPDR) 0)
300 static struct bfd_hash_entry *mips_elf_link_hash_newfunc
301 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
302 static void ecoff_swap_rpdr_out
303 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
304 static bfd_boolean mips_elf_create_procedure_table
305 PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
306 struct ecoff_debug_info *));
307 static bfd_boolean mips_elf_check_mips16_stubs
308 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
309 static void bfd_mips_elf32_swap_gptab_in
310 PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
311 static void bfd_mips_elf32_swap_gptab_out
312 PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
313 static void bfd_elf32_swap_compact_rel_out
314 PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
315 static void bfd_elf32_swap_crinfo_out
316 PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
318 static void bfd_mips_elf_swap_msym_in
319 PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
321 static void bfd_mips_elf_swap_msym_out
322 PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
323 static int sort_dynamic_relocs
324 PARAMS ((const void *, const void *));
325 static bfd_boolean mips_elf_output_extsym
326 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
327 static int gptab_compare PARAMS ((const void *, const void *));
328 static asection * mips_elf_got_section PARAMS ((bfd *));
329 static struct mips_got_info *mips_elf_got_info
330 PARAMS ((bfd *, asection **));
331 static bfd_vma mips_elf_local_got_index
332 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
333 static bfd_vma mips_elf_global_got_index
334 PARAMS ((bfd *, struct elf_link_hash_entry *));
335 static bfd_vma mips_elf_got_page
336 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
337 static bfd_vma mips_elf_got16_entry
338 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_boolean));
339 static bfd_vma mips_elf_got_offset_from_index
340 PARAMS ((bfd *, bfd *, bfd_vma));
341 static struct mips_got_entry *mips_elf_create_local_got_entry
342 PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
343 static bfd_boolean mips_elf_sort_hash_table
344 PARAMS ((struct bfd_link_info *, unsigned long));
345 static bfd_boolean mips_elf_sort_hash_table_f
346 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
347 static bfd_boolean mips_elf_record_global_got_symbol
348 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
349 struct mips_got_info *));
350 static const Elf_Internal_Rela *mips_elf_next_relocation
351 PARAMS ((bfd *, unsigned int, const Elf_Internal_Rela *,
352 const Elf_Internal_Rela *));
353 static bfd_boolean mips_elf_local_relocation_p
354 PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, bfd_boolean));
355 static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
356 static bfd_boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
357 static bfd_vma mips_elf_high PARAMS ((bfd_vma));
358 static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
359 static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
360 static bfd_boolean mips_elf_create_compact_rel_section
361 PARAMS ((bfd *, struct bfd_link_info *));
362 static bfd_boolean mips_elf_create_got_section
363 PARAMS ((bfd *, struct bfd_link_info *));
364 static asection *mips_elf_create_msym_section
366 static bfd_reloc_status_type mips_elf_calculate_relocation
367 PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
368 const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
369 Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
370 bfd_boolean *, bfd_boolean));
371 static bfd_vma mips_elf_obtain_contents
372 PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
373 static bfd_boolean mips_elf_perform_relocation
374 PARAMS ((struct bfd_link_info *, reloc_howto_type *,
375 const Elf_Internal_Rela *, bfd_vma, bfd *, asection *, bfd_byte *,
377 static bfd_boolean mips_elf_stub_section_p
378 PARAMS ((bfd *, asection *));
379 static void mips_elf_allocate_dynamic_relocations
380 PARAMS ((bfd *, unsigned int));
381 static bfd_boolean mips_elf_create_dynamic_relocation
382 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
383 struct mips_elf_link_hash_entry *, asection *,
384 bfd_vma, bfd_vma *, asection *));
385 static INLINE int elf_mips_isa PARAMS ((flagword));
386 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
387 static void mips_elf_irix6_finish_dynamic_symbol
388 PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
389 static bfd_boolean _bfd_mips_elf_mach_extends_p PARAMS ((flagword, flagword));
390 static hashval_t mips_elf_got_entry_hash PARAMS ((const PTR));
391 static int mips_elf_got_entry_eq PARAMS ((const PTR, const PTR));
393 /* This will be used when we sort the dynamic relocation records. */
394 static bfd *reldyn_sorting_bfd;
396 /* Nonzero if ABFD is using the N32 ABI. */
398 #define ABI_N32_P(abfd) \
399 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
401 /* Nonzero if ABFD is using the N64 ABI. */
402 #define ABI_64_P(abfd) \
403 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
405 /* Nonzero if ABFD is using NewABI conventions. */
406 #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd))
408 /* The IRIX compatibility level we are striving for. */
409 #define IRIX_COMPAT(abfd) \
410 (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd))
412 /* Whether we are trying to be compatible with IRIX at all. */
413 #define SGI_COMPAT(abfd) \
414 (IRIX_COMPAT (abfd) != ict_none)
416 /* The name of the options section. */
417 #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
418 (ABI_64_P (abfd) ? ".MIPS.options" : ".options")
420 /* The name of the stub section. */
421 #define MIPS_ELF_STUB_SECTION_NAME(abfd) \
422 (ABI_64_P (abfd) ? ".MIPS.stubs" : ".stub")
424 /* The size of an external REL relocation. */
425 #define MIPS_ELF_REL_SIZE(abfd) \
426 (get_elf_backend_data (abfd)->s->sizeof_rel)
428 /* The size of an external dynamic table entry. */
429 #define MIPS_ELF_DYN_SIZE(abfd) \
430 (get_elf_backend_data (abfd)->s->sizeof_dyn)
432 /* The size of a GOT entry. */
433 #define MIPS_ELF_GOT_SIZE(abfd) \
434 (get_elf_backend_data (abfd)->s->arch_size / 8)
436 /* The size of a symbol-table entry. */
437 #define MIPS_ELF_SYM_SIZE(abfd) \
438 (get_elf_backend_data (abfd)->s->sizeof_sym)
440 /* The default alignment for sections, as a power of two. */
441 #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
442 (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
444 /* Get word-sized data. */
445 #define MIPS_ELF_GET_WORD(abfd, ptr) \
446 (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
448 /* Put out word-sized data. */
449 #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
451 ? bfd_put_64 (abfd, val, ptr) \
452 : bfd_put_32 (abfd, val, ptr))
454 /* Add a dynamic symbol table-entry. */
456 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
457 (ABI_64_P (elf_hash_table (info)->dynobj) \
458 ? bfd_elf64_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val) \
459 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
461 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
462 (ABI_64_P (elf_hash_table (info)->dynobj) \
463 ? (abort (), FALSE) \
464 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
467 #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \
468 (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (rtype, rela))
470 /* Determine whether the internal relocation of index REL_IDX is REL
471 (zero) or RELA (non-zero). The assumption is that, if there are
472 two relocation sections for this section, one of them is REL and
473 the other is RELA. If the index of the relocation we're testing is
474 in range for the first relocation section, check that the external
475 relocation size is that for RELA. It is also assumed that, if
476 rel_idx is not in range for the first section, and this first
477 section contains REL relocs, then the relocation is in the second
478 section, that is RELA. */
479 #define MIPS_RELOC_RELA_P(abfd, sec, rel_idx) \
480 ((NUM_SHDR_ENTRIES (&elf_section_data (sec)->rel_hdr) \
481 * get_elf_backend_data (abfd)->s->int_rels_per_ext_rel \
482 > (bfd_vma)(rel_idx)) \
483 == (elf_section_data (sec)->rel_hdr.sh_entsize \
484 == (ABI_64_P (abfd) ? sizeof (Elf64_External_Rela) \
485 : sizeof (Elf32_External_Rela))))
487 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
488 from smaller values. Start with zero, widen, *then* decrement. */
489 #define MINUS_ONE (((bfd_vma)0) - 1)
491 /* The number of local .got entries we reserve. */
492 #define MIPS_RESERVED_GOTNO (2)
494 /* Instructions which appear in a stub. For some reason the stub is
495 slightly different on an SGI system. */
496 #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
497 #define STUB_LW(abfd) \
500 ? 0xdf998010 /* ld t9,0x8010(gp) */ \
501 : 0x8f998010) /* lw t9,0x8010(gp) */ \
502 : 0x8f998010) /* lw t9,0x8000(gp) */
503 #define STUB_MOVE(abfd) \
504 (SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */
505 #define STUB_JALR 0x0320f809 /* jal t9 */
506 #define STUB_LI16(abfd) \
507 (SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */
508 #define MIPS_FUNCTION_STUB_SIZE (16)
510 /* The name of the dynamic interpreter. This is put in the .interp
513 #define ELF_DYNAMIC_INTERPRETER(abfd) \
514 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
515 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
516 : "/usr/lib/libc.so.1")
519 #define MNAME(bfd,pre,pos) \
520 (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos))
521 #define ELF_R_SYM(bfd, i) \
522 (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i))
523 #define ELF_R_TYPE(bfd, i) \
524 (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i))
525 #define ELF_R_INFO(bfd, s, t) \
526 (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t))
528 #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos)
529 #define ELF_R_SYM(bfd, i) \
531 #define ELF_R_TYPE(bfd, i) \
533 #define ELF_R_INFO(bfd, s, t) \
534 (ELF32_R_INFO (s, t))
537 /* The mips16 compiler uses a couple of special sections to handle
538 floating point arguments.
540 Section names that look like .mips16.fn.FNNAME contain stubs that
541 copy floating point arguments from the fp regs to the gp regs and
542 then jump to FNNAME. If any 32 bit function calls FNNAME, the
543 call should be redirected to the stub instead. If no 32 bit
544 function calls FNNAME, the stub should be discarded. We need to
545 consider any reference to the function, not just a call, because
546 if the address of the function is taken we will need the stub,
547 since the address might be passed to a 32 bit function.
549 Section names that look like .mips16.call.FNNAME contain stubs
550 that copy floating point arguments from the gp regs to the fp
551 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
552 then any 16 bit function that calls FNNAME should be redirected
553 to the stub instead. If FNNAME is not a 32 bit function, the
554 stub should be discarded.
556 .mips16.call.fp.FNNAME sections are similar, but contain stubs
557 which call FNNAME and then copy the return value from the fp regs
558 to the gp regs. These stubs store the return value in $18 while
559 calling FNNAME; any function which might call one of these stubs
560 must arrange to save $18 around the call. (This case is not
561 needed for 32 bit functions that call 16 bit functions, because
562 16 bit functions always return floating point values in both
565 Note that in all cases FNNAME might be defined statically.
566 Therefore, FNNAME is not used literally. Instead, the relocation
567 information will indicate which symbol the section is for.
569 We record any stubs that we find in the symbol table. */
571 #define FN_STUB ".mips16.fn."
572 #define CALL_STUB ".mips16.call."
573 #define CALL_FP_STUB ".mips16.call.fp."
575 /* Look up an entry in a MIPS ELF linker hash table. */
577 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
578 ((struct mips_elf_link_hash_entry *) \
579 elf_link_hash_lookup (&(table)->root, (string), (create), \
582 /* Traverse a MIPS ELF linker hash table. */
584 #define mips_elf_link_hash_traverse(table, func, info) \
585 (elf_link_hash_traverse \
587 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
590 /* Get the MIPS ELF linker hash table from a link_info structure. */
592 #define mips_elf_hash_table(p) \
593 ((struct mips_elf_link_hash_table *) ((p)->hash))
595 /* Create an entry in a MIPS ELF linker hash table. */
597 static struct bfd_hash_entry *
598 mips_elf_link_hash_newfunc (entry, table, string)
599 struct bfd_hash_entry *entry;
600 struct bfd_hash_table *table;
603 struct mips_elf_link_hash_entry *ret =
604 (struct mips_elf_link_hash_entry *) entry;
606 /* Allocate the structure if it has not already been allocated by a
608 if (ret == (struct mips_elf_link_hash_entry *) NULL)
609 ret = ((struct mips_elf_link_hash_entry *)
610 bfd_hash_allocate (table,
611 sizeof (struct mips_elf_link_hash_entry)));
612 if (ret == (struct mips_elf_link_hash_entry *) NULL)
613 return (struct bfd_hash_entry *) ret;
615 /* Call the allocation method of the superclass. */
616 ret = ((struct mips_elf_link_hash_entry *)
617 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
619 if (ret != (struct mips_elf_link_hash_entry *) NULL)
621 /* Set local fields. */
622 memset (&ret->esym, 0, sizeof (EXTR));
623 /* We use -2 as a marker to indicate that the information has
624 not been set. -1 means there is no associated ifd. */
626 ret->possibly_dynamic_relocs = 0;
627 ret->readonly_reloc = FALSE;
628 ret->min_dyn_reloc_index = 0;
629 ret->no_fn_stub = FALSE;
631 ret->need_fn_stub = FALSE;
632 ret->call_stub = NULL;
633 ret->call_fp_stub = NULL;
634 ret->forced_local = FALSE;
637 return (struct bfd_hash_entry *) ret;
640 /* Read ECOFF debugging information from a .mdebug section into a
641 ecoff_debug_info structure. */
644 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
647 struct ecoff_debug_info *debug;
650 const struct ecoff_debug_swap *swap;
651 char *ext_hdr = NULL;
653 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
654 memset (debug, 0, sizeof (*debug));
656 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
657 if (ext_hdr == NULL && swap->external_hdr_size != 0)
660 if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
661 swap->external_hdr_size))
664 symhdr = &debug->symbolic_header;
665 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
667 /* The symbolic header contains absolute file offsets and sizes to
669 #define READ(ptr, offset, count, size, type) \
670 if (symhdr->count == 0) \
674 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
675 debug->ptr = (type) bfd_malloc (amt); \
676 if (debug->ptr == NULL) \
678 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
679 || bfd_bread (debug->ptr, amt, abfd) != amt) \
683 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
684 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
685 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
686 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
687 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
688 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
690 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
691 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
692 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
693 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
694 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
698 debug->adjust = NULL;
705 if (debug->line != NULL)
707 if (debug->external_dnr != NULL)
708 free (debug->external_dnr);
709 if (debug->external_pdr != NULL)
710 free (debug->external_pdr);
711 if (debug->external_sym != NULL)
712 free (debug->external_sym);
713 if (debug->external_opt != NULL)
714 free (debug->external_opt);
715 if (debug->external_aux != NULL)
716 free (debug->external_aux);
717 if (debug->ss != NULL)
719 if (debug->ssext != NULL)
721 if (debug->external_fdr != NULL)
722 free (debug->external_fdr);
723 if (debug->external_rfd != NULL)
724 free (debug->external_rfd);
725 if (debug->external_ext != NULL)
726 free (debug->external_ext);
730 /* Swap RPDR (runtime procedure table entry) for output. */
733 ecoff_swap_rpdr_out (abfd, in, ex)
738 H_PUT_S32 (abfd, in->adr, ex->p_adr);
739 H_PUT_32 (abfd, in->regmask, ex->p_regmask);
740 H_PUT_32 (abfd, in->regoffset, ex->p_regoffset);
741 H_PUT_32 (abfd, in->fregmask, ex->p_fregmask);
742 H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset);
743 H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset);
745 H_PUT_16 (abfd, in->framereg, ex->p_framereg);
746 H_PUT_16 (abfd, in->pcreg, ex->p_pcreg);
748 H_PUT_32 (abfd, in->irpss, ex->p_irpss);
750 H_PUT_S32 (abfd, in->exception_info, ex->p_exception_info);
754 /* Create a runtime procedure table from the .mdebug section. */
757 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
760 struct bfd_link_info *info;
762 struct ecoff_debug_info *debug;
764 const struct ecoff_debug_swap *swap;
765 HDRR *hdr = &debug->symbolic_header;
767 struct rpdr_ext *erp;
769 struct pdr_ext *epdr;
770 struct sym_ext *esym;
775 unsigned long sindex;
779 const char *no_name_func = _("static procedure (no name)");
787 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
789 sindex = strlen (no_name_func) + 1;
793 size = swap->external_pdr_size;
795 epdr = (struct pdr_ext *) bfd_malloc (size * count);
799 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
802 size = sizeof (RPDR);
803 rp = rpdr = (RPDR *) bfd_malloc (size * count);
807 size = sizeof (char *);
808 sv = (char **) bfd_malloc (size * count);
812 count = hdr->isymMax;
813 size = swap->external_sym_size;
814 esym = (struct sym_ext *) bfd_malloc (size * count);
818 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
822 ss = (char *) bfd_malloc (count);
825 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
829 for (i = 0; i < (unsigned long) count; i++, rp++)
831 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
832 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
834 rp->regmask = pdr.regmask;
835 rp->regoffset = pdr.regoffset;
836 rp->fregmask = pdr.fregmask;
837 rp->fregoffset = pdr.fregoffset;
838 rp->frameoffset = pdr.frameoffset;
839 rp->framereg = pdr.framereg;
840 rp->pcreg = pdr.pcreg;
842 sv[i] = ss + sym.iss;
843 sindex += strlen (sv[i]) + 1;
847 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
848 size = BFD_ALIGN (size, 16);
849 rtproc = (PTR) bfd_alloc (abfd, size);
852 mips_elf_hash_table (info)->procedure_count = 0;
856 mips_elf_hash_table (info)->procedure_count = count + 2;
858 erp = (struct rpdr_ext *) rtproc;
859 memset (erp, 0, sizeof (struct rpdr_ext));
861 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
862 strcpy (str, no_name_func);
863 str += strlen (no_name_func) + 1;
864 for (i = 0; i < count; i++)
866 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
868 str += strlen (sv[i]) + 1;
870 H_PUT_S32 (abfd, -1, (erp + count)->p_adr);
872 /* Set the size and contents of .rtproc section. */
874 s->contents = (bfd_byte *) rtproc;
876 /* Skip this section later on (I don't think this currently
877 matters, but someday it might). */
878 s->link_order_head = (struct bfd_link_order *) NULL;
907 /* Check the mips16 stubs for a particular symbol, and see if we can
911 mips_elf_check_mips16_stubs (h, data)
912 struct mips_elf_link_hash_entry *h;
913 PTR data ATTRIBUTE_UNUSED;
915 if (h->root.root.type == bfd_link_hash_warning)
916 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
918 if (h->fn_stub != NULL
919 && ! h->need_fn_stub)
921 /* We don't need the fn_stub; the only references to this symbol
922 are 16 bit calls. Clobber the size to 0 to prevent it from
923 being included in the link. */
924 h->fn_stub->_raw_size = 0;
925 h->fn_stub->_cooked_size = 0;
926 h->fn_stub->flags &= ~SEC_RELOC;
927 h->fn_stub->reloc_count = 0;
928 h->fn_stub->flags |= SEC_EXCLUDE;
931 if (h->call_stub != NULL
932 && h->root.other == STO_MIPS16)
934 /* We don't need the call_stub; this is a 16 bit function, so
935 calls from other 16 bit functions are OK. Clobber the size
936 to 0 to prevent it from being included in the link. */
937 h->call_stub->_raw_size = 0;
938 h->call_stub->_cooked_size = 0;
939 h->call_stub->flags &= ~SEC_RELOC;
940 h->call_stub->reloc_count = 0;
941 h->call_stub->flags |= SEC_EXCLUDE;
944 if (h->call_fp_stub != NULL
945 && h->root.other == STO_MIPS16)
947 /* We don't need the call_stub; this is a 16 bit function, so
948 calls from other 16 bit functions are OK. Clobber the size
949 to 0 to prevent it from being included in the link. */
950 h->call_fp_stub->_raw_size = 0;
951 h->call_fp_stub->_cooked_size = 0;
952 h->call_fp_stub->flags &= ~SEC_RELOC;
953 h->call_fp_stub->reloc_count = 0;
954 h->call_fp_stub->flags |= SEC_EXCLUDE;
960 bfd_reloc_status_type
961 _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
962 relocateable, data, gp)
965 arelent *reloc_entry;
966 asection *input_section;
967 bfd_boolean relocateable;
975 if (bfd_is_com_section (symbol->section))
978 relocation = symbol->value;
980 relocation += symbol->section->output_section->vma;
981 relocation += symbol->section->output_offset;
983 if (reloc_entry->address > input_section->_cooked_size)
984 return bfd_reloc_outofrange;
986 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
988 /* Set val to the offset into the section or symbol. */
989 if (reloc_entry->howto->src_mask == 0)
991 /* This case occurs with the 64-bit MIPS ELF ABI. */
992 val = reloc_entry->addend;
996 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
1001 /* Adjust val for the final section location and GP value. If we
1002 are producing relocateable output, we don't want to do this for
1003 an external symbol. */
1005 || (symbol->flags & BSF_SECTION_SYM) != 0)
1006 val += relocation - gp;
1008 insn = (insn & ~0xffff) | (val & 0xffff);
1009 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
1012 reloc_entry->address += input_section->output_offset;
1014 else if ((long) val >= 0x8000 || (long) val < -0x8000)
1015 return bfd_reloc_overflow;
1017 return bfd_reloc_ok;
1020 /* Swap an entry in a .gptab section. Note that these routines rely
1021 on the equivalence of the two elements of the union. */
1024 bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
1026 const Elf32_External_gptab *ex;
1029 in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value);
1030 in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes);
1034 bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
1036 const Elf32_gptab *in;
1037 Elf32_External_gptab *ex;
1039 H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value);
1040 H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes);
1044 bfd_elf32_swap_compact_rel_out (abfd, in, ex)
1046 const Elf32_compact_rel *in;
1047 Elf32_External_compact_rel *ex;
1049 H_PUT_32 (abfd, in->id1, ex->id1);
1050 H_PUT_32 (abfd, in->num, ex->num);
1051 H_PUT_32 (abfd, in->id2, ex->id2);
1052 H_PUT_32 (abfd, in->offset, ex->offset);
1053 H_PUT_32 (abfd, in->reserved0, ex->reserved0);
1054 H_PUT_32 (abfd, in->reserved1, ex->reserved1);
1058 bfd_elf32_swap_crinfo_out (abfd, in, ex)
1060 const Elf32_crinfo *in;
1061 Elf32_External_crinfo *ex;
1065 l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
1066 | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
1067 | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
1068 | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
1069 H_PUT_32 (abfd, l, ex->info);
1070 H_PUT_32 (abfd, in->konst, ex->konst);
1071 H_PUT_32 (abfd, in->vaddr, ex->vaddr);
1075 /* Swap in an MSYM entry. */
1078 bfd_mips_elf_swap_msym_in (abfd, ex, in)
1080 const Elf32_External_Msym *ex;
1081 Elf32_Internal_Msym *in;
1083 in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value);
1084 in->ms_info = H_GET_32 (abfd, ex->ms_info);
1087 /* Swap out an MSYM entry. */
1090 bfd_mips_elf_swap_msym_out (abfd, in, ex)
1092 const Elf32_Internal_Msym *in;
1093 Elf32_External_Msym *ex;
1095 H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
1096 H_PUT_32 (abfd, in->ms_info, ex->ms_info);
1099 /* A .reginfo section holds a single Elf32_RegInfo structure. These
1100 routines swap this structure in and out. They are used outside of
1101 BFD, so they are globally visible. */
1104 bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
1106 const Elf32_External_RegInfo *ex;
1109 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
1110 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
1111 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
1112 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
1113 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
1114 in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value);
1118 bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
1120 const Elf32_RegInfo *in;
1121 Elf32_External_RegInfo *ex;
1123 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
1124 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
1125 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
1126 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
1127 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
1128 H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value);
1131 /* In the 64 bit ABI, the .MIPS.options section holds register
1132 information in an Elf64_Reginfo structure. These routines swap
1133 them in and out. They are globally visible because they are used
1134 outside of BFD. These routines are here so that gas can call them
1135 without worrying about whether the 64 bit ABI has been included. */
1138 bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
1140 const Elf64_External_RegInfo *ex;
1141 Elf64_Internal_RegInfo *in;
1143 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
1144 in->ri_pad = H_GET_32 (abfd, ex->ri_pad);
1145 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
1146 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
1147 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
1148 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
1149 in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value);
1153 bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
1155 const Elf64_Internal_RegInfo *in;
1156 Elf64_External_RegInfo *ex;
1158 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
1159 H_PUT_32 (abfd, in->ri_pad, ex->ri_pad);
1160 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
1161 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
1162 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
1163 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
1164 H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value);
1167 /* Swap in an options header. */
1170 bfd_mips_elf_swap_options_in (abfd, ex, in)
1172 const Elf_External_Options *ex;
1173 Elf_Internal_Options *in;
1175 in->kind = H_GET_8 (abfd, ex->kind);
1176 in->size = H_GET_8 (abfd, ex->size);
1177 in->section = H_GET_16 (abfd, ex->section);
1178 in->info = H_GET_32 (abfd, ex->info);
1181 /* Swap out an options header. */
1184 bfd_mips_elf_swap_options_out (abfd, in, ex)
1186 const Elf_Internal_Options *in;
1187 Elf_External_Options *ex;
1189 H_PUT_8 (abfd, in->kind, ex->kind);
1190 H_PUT_8 (abfd, in->size, ex->size);
1191 H_PUT_16 (abfd, in->section, ex->section);
1192 H_PUT_32 (abfd, in->info, ex->info);
1195 /* This function is called via qsort() to sort the dynamic relocation
1196 entries by increasing r_symndx value. */
1199 sort_dynamic_relocs (arg1, arg2)
1203 Elf_Internal_Rela int_reloc1;
1204 Elf_Internal_Rela int_reloc2;
1206 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1);
1207 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2);
1209 return ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info);
1212 /* This routine is used to write out ECOFF debugging external symbol
1213 information. It is called via mips_elf_link_hash_traverse. The
1214 ECOFF external symbol information must match the ELF external
1215 symbol information. Unfortunately, at this point we don't know
1216 whether a symbol is required by reloc information, so the two
1217 tables may wind up being different. We must sort out the external
1218 symbol information before we can set the final size of the .mdebug
1219 section, and we must set the size of the .mdebug section before we
1220 can relocate any sections, and we can't know which symbols are
1221 required by relocation until we relocate the sections.
1222 Fortunately, it is relatively unlikely that any symbol will be
1223 stripped but required by a reloc. In particular, it can not happen
1224 when generating a final executable. */
1227 mips_elf_output_extsym (h, data)
1228 struct mips_elf_link_hash_entry *h;
1231 struct extsym_info *einfo = (struct extsym_info *) data;
1233 asection *sec, *output_section;
1235 if (h->root.root.type == bfd_link_hash_warning)
1236 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1238 if (h->root.indx == -2)
1240 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1241 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
1242 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
1243 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
1245 else if (einfo->info->strip == strip_all
1246 || (einfo->info->strip == strip_some
1247 && bfd_hash_lookup (einfo->info->keep_hash,
1248 h->root.root.root.string,
1249 FALSE, FALSE) == NULL))
1257 if (h->esym.ifd == -2)
1260 h->esym.cobol_main = 0;
1261 h->esym.weakext = 0;
1262 h->esym.reserved = 0;
1263 h->esym.ifd = ifdNil;
1264 h->esym.asym.value = 0;
1265 h->esym.asym.st = stGlobal;
1267 if (h->root.root.type == bfd_link_hash_undefined
1268 || h->root.root.type == bfd_link_hash_undefweak)
1272 /* Use undefined class. Also, set class and type for some
1274 name = h->root.root.root.string;
1275 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
1276 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
1278 h->esym.asym.sc = scData;
1279 h->esym.asym.st = stLabel;
1280 h->esym.asym.value = 0;
1282 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
1284 h->esym.asym.sc = scAbs;
1285 h->esym.asym.st = stLabel;
1286 h->esym.asym.value =
1287 mips_elf_hash_table (einfo->info)->procedure_count;
1289 else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (einfo->abfd))
1291 h->esym.asym.sc = scAbs;
1292 h->esym.asym.st = stLabel;
1293 h->esym.asym.value = elf_gp (einfo->abfd);
1296 h->esym.asym.sc = scUndefined;
1298 else if (h->root.root.type != bfd_link_hash_defined
1299 && h->root.root.type != bfd_link_hash_defweak)
1300 h->esym.asym.sc = scAbs;
1305 sec = h->root.root.u.def.section;
1306 output_section = sec->output_section;
1308 /* When making a shared library and symbol h is the one from
1309 the another shared library, OUTPUT_SECTION may be null. */
1310 if (output_section == NULL)
1311 h->esym.asym.sc = scUndefined;
1314 name = bfd_section_name (output_section->owner, output_section);
1316 if (strcmp (name, ".text") == 0)
1317 h->esym.asym.sc = scText;
1318 else if (strcmp (name, ".data") == 0)
1319 h->esym.asym.sc = scData;
1320 else if (strcmp (name, ".sdata") == 0)
1321 h->esym.asym.sc = scSData;
1322 else if (strcmp (name, ".rodata") == 0
1323 || strcmp (name, ".rdata") == 0)
1324 h->esym.asym.sc = scRData;
1325 else if (strcmp (name, ".bss") == 0)
1326 h->esym.asym.sc = scBss;
1327 else if (strcmp (name, ".sbss") == 0)
1328 h->esym.asym.sc = scSBss;
1329 else if (strcmp (name, ".init") == 0)
1330 h->esym.asym.sc = scInit;
1331 else if (strcmp (name, ".fini") == 0)
1332 h->esym.asym.sc = scFini;
1334 h->esym.asym.sc = scAbs;
1338 h->esym.asym.reserved = 0;
1339 h->esym.asym.index = indexNil;
1342 if (h->root.root.type == bfd_link_hash_common)
1343 h->esym.asym.value = h->root.root.u.c.size;
1344 else if (h->root.root.type == bfd_link_hash_defined
1345 || h->root.root.type == bfd_link_hash_defweak)
1347 if (h->esym.asym.sc == scCommon)
1348 h->esym.asym.sc = scBss;
1349 else if (h->esym.asym.sc == scSCommon)
1350 h->esym.asym.sc = scSBss;
1352 sec = h->root.root.u.def.section;
1353 output_section = sec->output_section;
1354 if (output_section != NULL)
1355 h->esym.asym.value = (h->root.root.u.def.value
1356 + sec->output_offset
1357 + output_section->vma);
1359 h->esym.asym.value = 0;
1361 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1363 struct mips_elf_link_hash_entry *hd = h;
1364 bfd_boolean no_fn_stub = h->no_fn_stub;
1366 while (hd->root.root.type == bfd_link_hash_indirect)
1368 hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link;
1369 no_fn_stub = no_fn_stub || hd->no_fn_stub;
1374 /* Set type and value for a symbol with a function stub. */
1375 h->esym.asym.st = stProc;
1376 sec = hd->root.root.u.def.section;
1378 h->esym.asym.value = 0;
1381 output_section = sec->output_section;
1382 if (output_section != NULL)
1383 h->esym.asym.value = (hd->root.plt.offset
1384 + sec->output_offset
1385 + output_section->vma);
1387 h->esym.asym.value = 0;
1395 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
1396 h->root.root.root.string,
1399 einfo->failed = TRUE;
1406 /* A comparison routine used to sort .gptab entries. */
1409 gptab_compare (p1, p2)
1413 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
1414 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
1416 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
1419 /* Functions to manage the got entry hash table. */
1421 mips_elf_got_entry_hash (entry_)
1424 const struct mips_got_entry *entry = (struct mips_got_entry *)entry_;
1426 return htab_hash_pointer (entry->abfd) + entry->symndx
1428 + (entry->addend >> 32)
1434 mips_elf_got_entry_eq (entry1, entry2)
1438 const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1;
1439 const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2;
1441 return e1->abfd == e2->abfd && e1->symndx == e2->symndx
1442 && e1->addend == e2->addend;
1445 /* Returns the GOT section for ABFD. */
1448 mips_elf_got_section (abfd)
1451 return bfd_get_section_by_name (abfd, ".got");
1454 /* Returns the GOT information associated with the link indicated by
1455 INFO. If SGOTP is non-NULL, it is filled in with the GOT
1458 static struct mips_got_info *
1459 mips_elf_got_info (abfd, sgotp)
1464 struct mips_got_info *g;
1466 sgot = mips_elf_got_section (abfd);
1467 BFD_ASSERT (sgot != NULL);
1468 BFD_ASSERT (elf_section_data (sgot) != NULL);
1469 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
1470 BFD_ASSERT (g != NULL);
1477 /* Returns the GOT offset at which the indicated address can be found.
1478 If there is not yet a GOT entry for this value, create one. Returns
1479 -1 if no satisfactory GOT offset can be found. */
1482 mips_elf_local_got_index (abfd, info, value)
1484 struct bfd_link_info *info;
1488 struct mips_got_info *g;
1489 struct mips_got_entry *entry;
1491 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1493 entry = mips_elf_create_local_got_entry (abfd, g, sgot, value);
1495 return entry->gotidx;
1500 /* Returns the GOT index for the global symbol indicated by H. */
1503 mips_elf_global_got_index (abfd, h)
1505 struct elf_link_hash_entry *h;
1509 struct mips_got_info *g;
1510 long global_got_dynindx = 0;
1512 g = mips_elf_got_info (abfd, &sgot);
1513 if (g->global_gotsym != NULL)
1514 global_got_dynindx = g->global_gotsym->dynindx;
1516 /* Once we determine the global GOT entry with the lowest dynamic
1517 symbol table index, we must put all dynamic symbols with greater
1518 indices into the GOT. That makes it easy to calculate the GOT
1520 BFD_ASSERT (h->dynindx >= global_got_dynindx);
1521 index = ((h->dynindx - global_got_dynindx + g->local_gotno)
1522 * MIPS_ELF_GOT_SIZE (abfd));
1523 BFD_ASSERT (index < sgot->_raw_size);
1528 /* Find a GOT entry that is within 32KB of the VALUE. These entries
1529 are supposed to be placed at small offsets in the GOT, i.e.,
1530 within 32KB of GP. Return the index into the GOT for this page,
1531 and store the offset from this entry to the desired address in
1532 OFFSETP, if it is non-NULL. */
1535 mips_elf_got_page (abfd, info, value, offsetp)
1537 struct bfd_link_info *info;
1542 struct mips_got_info *g;
1544 struct mips_got_entry *entry;
1546 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1548 entry = mips_elf_create_local_got_entry (abfd, g, sgot,
1550 & (~(bfd_vma)0xffff));
1555 index = entry->gotidx;
1558 *offsetp = value - entry->addend;
1563 /* Find a GOT entry whose higher-order 16 bits are the same as those
1564 for value. Return the index into the GOT for this entry. */
1567 mips_elf_got16_entry (abfd, info, value, external)
1569 struct bfd_link_info *info;
1571 bfd_boolean external;
1574 struct mips_got_info *g;
1575 struct mips_got_entry *entry;
1579 /* Although the ABI says that it is "the high-order 16 bits" that we
1580 want, it is really the %high value. The complete value is
1581 calculated with a `addiu' of a LO16 relocation, just as with a
1583 value = mips_elf_high (value) << 16;
1586 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1588 entry = mips_elf_create_local_got_entry (abfd, g, sgot, value);
1590 return entry->gotidx;
1595 /* Returns the offset for the entry at the INDEXth position
1599 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
1607 sgot = mips_elf_got_section (dynobj);
1608 gp = _bfd_get_gp_value (output_bfd);
1609 return (sgot->output_section->vma + sgot->output_offset + index -
1613 /* Create a local GOT entry for VALUE. Return the index of the entry,
1614 or -1 if it could not be created. */
1616 static struct mips_got_entry *
1617 mips_elf_create_local_got_entry (abfd, g, sgot, value)
1619 struct mips_got_info *g;
1623 struct mips_got_entry entry, **loc;
1626 entry.symndx = (unsigned long)-1;
1627 entry.addend = value;
1629 loc = (struct mips_got_entry **) htab_find_slot (g->got_entries, &entry,
1634 entry.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
1636 *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry);
1641 memcpy (*loc, &entry, sizeof entry);
1643 if (g->assigned_gotno >= g->local_gotno)
1645 (*loc)->gotidx = (unsigned long)-1;
1646 /* We didn't allocate enough space in the GOT. */
1647 (*_bfd_error_handler)
1648 (_("not enough GOT space for local GOT entries"));
1649 bfd_set_error (bfd_error_bad_value);
1653 MIPS_ELF_PUT_WORD (abfd, value,
1654 (sgot->contents + entry.gotidx));
1659 /* Sort the dynamic symbol table so that symbols that need GOT entries
1660 appear towards the end. This reduces the amount of GOT space
1661 required. MAX_LOCAL is used to set the number of local symbols
1662 known to be in the dynamic symbol table. During
1663 _bfd_mips_elf_size_dynamic_sections, this value is 1. Afterward, the
1664 section symbols are added and the count is higher. */
1667 mips_elf_sort_hash_table (info, max_local)
1668 struct bfd_link_info *info;
1669 unsigned long max_local;
1671 struct mips_elf_hash_sort_data hsd;
1672 struct mips_got_info *g;
1675 dynobj = elf_hash_table (info)->dynobj;
1678 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
1679 hsd.max_non_got_dynindx = max_local;
1680 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
1681 elf_hash_table (info)),
1682 mips_elf_sort_hash_table_f,
1685 /* There should have been enough room in the symbol table to
1686 accommodate both the GOT and non-GOT symbols. */
1687 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
1689 /* Now we know which dynamic symbol has the lowest dynamic symbol
1690 table index in the GOT. */
1691 g = mips_elf_got_info (dynobj, NULL);
1692 g->global_gotsym = hsd.low;
1697 /* If H needs a GOT entry, assign it the highest available dynamic
1698 index. Otherwise, assign it the lowest available dynamic
1702 mips_elf_sort_hash_table_f (h, data)
1703 struct mips_elf_link_hash_entry *h;
1706 struct mips_elf_hash_sort_data *hsd
1707 = (struct mips_elf_hash_sort_data *) data;
1709 if (h->root.root.type == bfd_link_hash_warning)
1710 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1712 /* Symbols without dynamic symbol table entries aren't interesting
1714 if (h->root.dynindx == -1)
1717 if (h->root.got.offset != 1)
1718 h->root.dynindx = hsd->max_non_got_dynindx++;
1721 h->root.dynindx = --hsd->min_got_dynindx;
1722 hsd->low = (struct elf_link_hash_entry *) h;
1728 /* If H is a symbol that needs a global GOT entry, but has a dynamic
1729 symbol table index lower than any we've seen to date, record it for
1733 mips_elf_record_global_got_symbol (h, info, g)
1734 struct elf_link_hash_entry *h;
1735 struct bfd_link_info *info;
1736 struct mips_got_info *g ATTRIBUTE_UNUSED;
1738 /* A global symbol in the GOT must also be in the dynamic symbol
1740 if (h->dynindx == -1)
1742 switch (ELF_ST_VISIBILITY (h->other))
1746 _bfd_mips_elf_hide_symbol (info, h, TRUE);
1749 if (!bfd_elf32_link_record_dynamic_symbol (info, h))
1753 /* If we've already marked this entry as needing GOT space, we don't
1754 need to do it again. */
1755 if (h->got.offset != MINUS_ONE)
1758 /* By setting this to a value other than -1, we are indicating that
1759 there needs to be a GOT entry for H. Avoid using zero, as the
1760 generic ELF copy_indirect_symbol tests for <= 0. */
1766 /* Returns the first relocation of type r_type found, beginning with
1767 RELOCATION. RELEND is one-past-the-end of the relocation table. */
1769 static const Elf_Internal_Rela *
1770 mips_elf_next_relocation (abfd, r_type, relocation, relend)
1771 bfd *abfd ATTRIBUTE_UNUSED;
1772 unsigned int r_type;
1773 const Elf_Internal_Rela *relocation;
1774 const Elf_Internal_Rela *relend;
1776 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
1777 immediately following. However, for the IRIX6 ABI, the next
1778 relocation may be a composed relocation consisting of several
1779 relocations for the same address. In that case, the R_MIPS_LO16
1780 relocation may occur as one of these. We permit a similar
1781 extension in general, as that is useful for GCC. */
1782 while (relocation < relend)
1784 if (ELF_R_TYPE (abfd, relocation->r_info) == r_type)
1790 /* We didn't find it. */
1791 bfd_set_error (bfd_error_bad_value);
1795 /* Return whether a relocation is against a local symbol. */
1798 mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
1801 const Elf_Internal_Rela *relocation;
1802 asection **local_sections;
1803 bfd_boolean check_forced;
1805 unsigned long r_symndx;
1806 Elf_Internal_Shdr *symtab_hdr;
1807 struct mips_elf_link_hash_entry *h;
1810 r_symndx = ELF_R_SYM (input_bfd, relocation->r_info);
1811 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1812 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
1814 if (r_symndx < extsymoff)
1816 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
1821 /* Look up the hash table to check whether the symbol
1822 was forced local. */
1823 h = (struct mips_elf_link_hash_entry *)
1824 elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
1825 /* Find the real hash-table entry for this symbol. */
1826 while (h->root.root.type == bfd_link_hash_indirect
1827 || h->root.root.type == bfd_link_hash_warning)
1828 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
1829 if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1836 /* Sign-extend VALUE, which has the indicated number of BITS. */
1839 mips_elf_sign_extend (value, bits)
1843 if (value & ((bfd_vma) 1 << (bits - 1)))
1844 /* VALUE is negative. */
1845 value |= ((bfd_vma) - 1) << bits;
1850 /* Return non-zero if the indicated VALUE has overflowed the maximum
1851 range expressable by a signed number with the indicated number of
1855 mips_elf_overflow_p (value, bits)
1859 bfd_signed_vma svalue = (bfd_signed_vma) value;
1861 if (svalue > (1 << (bits - 1)) - 1)
1862 /* The value is too big. */
1864 else if (svalue < -(1 << (bits - 1)))
1865 /* The value is too small. */
1872 /* Calculate the %high function. */
1875 mips_elf_high (value)
1878 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
1881 /* Calculate the %higher function. */
1884 mips_elf_higher (value)
1885 bfd_vma value ATTRIBUTE_UNUSED;
1888 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
1891 return (bfd_vma) -1;
1895 /* Calculate the %highest function. */
1898 mips_elf_highest (value)
1899 bfd_vma value ATTRIBUTE_UNUSED;
1902 return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff;
1905 return (bfd_vma) -1;
1909 /* Create the .compact_rel section. */
1912 mips_elf_create_compact_rel_section (abfd, info)
1914 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1917 register asection *s;
1919 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
1921 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
1924 s = bfd_make_section (abfd, ".compact_rel");
1926 || ! bfd_set_section_flags (abfd, s, flags)
1927 || ! bfd_set_section_alignment (abfd, s,
1928 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
1931 s->_raw_size = sizeof (Elf32_External_compact_rel);
1937 /* Create the .got section to hold the global offset table. */
1940 mips_elf_create_got_section (abfd, info)
1942 struct bfd_link_info *info;
1945 register asection *s;
1946 struct elf_link_hash_entry *h;
1947 struct bfd_link_hash_entry *bh;
1948 struct mips_got_info *g;
1951 /* This function may be called more than once. */
1952 if (mips_elf_got_section (abfd))
1955 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1956 | SEC_LINKER_CREATED);
1958 s = bfd_make_section (abfd, ".got");
1960 || ! bfd_set_section_flags (abfd, s, flags)
1961 || ! bfd_set_section_alignment (abfd, s, 4))
1964 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
1965 linker script because we don't want to define the symbol if we
1966 are not creating a global offset table. */
1968 if (! (_bfd_generic_link_add_one_symbol
1969 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
1970 (bfd_vma) 0, (const char *) NULL, FALSE,
1971 get_elf_backend_data (abfd)->collect, &bh)))
1974 h = (struct elf_link_hash_entry *) bh;
1975 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
1976 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1977 h->type = STT_OBJECT;
1980 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
1983 /* The first several global offset table entries are reserved. */
1984 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
1986 amt = sizeof (struct mips_got_info);
1987 g = (struct mips_got_info *) bfd_alloc (abfd, amt);
1990 g->global_gotsym = NULL;
1991 g->local_gotno = MIPS_RESERVED_GOTNO;
1992 g->assigned_gotno = MIPS_RESERVED_GOTNO;
1993 g->got_entries = htab_try_create (1, mips_elf_got_entry_hash,
1994 mips_elf_got_entry_eq,
1996 if (g->got_entries == NULL)
1998 if (elf_section_data (s) == NULL)
2000 amt = sizeof (struct bfd_elf_section_data);
2001 s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
2002 if (elf_section_data (s) == NULL)
2005 elf_section_data (s)->tdata = (PTR) g;
2006 elf_section_data (s)->this_hdr.sh_flags
2007 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
2012 /* Returns the .msym section for ABFD, creating it if it does not
2013 already exist. Returns NULL to indicate error. */
2016 mips_elf_create_msym_section (abfd)
2021 s = bfd_get_section_by_name (abfd, ".msym");
2024 s = bfd_make_section (abfd, ".msym");
2026 || !bfd_set_section_flags (abfd, s,
2030 | SEC_LINKER_CREATED
2032 || !bfd_set_section_alignment (abfd, s,
2033 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
2040 /* Calculate the value produced by the RELOCATION (which comes from
2041 the INPUT_BFD). The ADDEND is the addend to use for this
2042 RELOCATION; RELOCATION->R_ADDEND is ignored.
2044 The result of the relocation calculation is stored in VALUEP.
2045 REQUIRE_JALXP indicates whether or not the opcode used with this
2046 relocation must be JALX.
2048 This function returns bfd_reloc_continue if the caller need take no
2049 further action regarding this relocation, bfd_reloc_notsupported if
2050 something goes dramatically wrong, bfd_reloc_overflow if an
2051 overflow occurs, and bfd_reloc_ok to indicate success. */
2053 static bfd_reloc_status_type
2054 mips_elf_calculate_relocation (abfd, input_bfd, input_section, info,
2055 relocation, addend, howto, local_syms,
2056 local_sections, valuep, namep,
2057 require_jalxp, save_addend)
2060 asection *input_section;
2061 struct bfd_link_info *info;
2062 const Elf_Internal_Rela *relocation;
2064 reloc_howto_type *howto;
2065 Elf_Internal_Sym *local_syms;
2066 asection **local_sections;
2069 bfd_boolean *require_jalxp;
2070 bfd_boolean save_addend;
2072 /* The eventual value we will return. */
2074 /* The address of the symbol against which the relocation is
2077 /* The final GP value to be used for the relocatable, executable, or
2078 shared object file being produced. */
2079 bfd_vma gp = MINUS_ONE;
2080 /* The place (section offset or address) of the storage unit being
2083 /* The value of GP used to create the relocatable object. */
2084 bfd_vma gp0 = MINUS_ONE;
2085 /* The offset into the global offset table at which the address of
2086 the relocation entry symbol, adjusted by the addend, resides
2087 during execution. */
2088 bfd_vma g = MINUS_ONE;
2089 /* The section in which the symbol referenced by the relocation is
2091 asection *sec = NULL;
2092 struct mips_elf_link_hash_entry *h = NULL;
2093 /* TRUE if the symbol referred to by this relocation is a local
2095 bfd_boolean local_p, was_local_p;
2096 /* TRUE if the symbol referred to by this relocation is "_gp_disp". */
2097 bfd_boolean gp_disp_p = FALSE;
2098 Elf_Internal_Shdr *symtab_hdr;
2100 unsigned long r_symndx;
2102 /* TRUE if overflow occurred during the calculation of the
2103 relocation value. */
2104 bfd_boolean overflowed_p;
2105 /* TRUE if this relocation refers to a MIPS16 function. */
2106 bfd_boolean target_is_16_bit_code_p = FALSE;
2108 /* Parse the relocation. */
2109 r_symndx = ELF_R_SYM (input_bfd, relocation->r_info);
2110 r_type = ELF_R_TYPE (input_bfd, relocation->r_info);
2111 p = (input_section->output_section->vma
2112 + input_section->output_offset
2113 + relocation->r_offset);
2115 /* Assume that there will be no overflow. */
2116 overflowed_p = FALSE;
2118 /* Figure out whether or not the symbol is local, and get the offset
2119 used in the array of hash table entries. */
2120 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2121 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
2122 local_sections, FALSE);
2123 was_local_p = local_p;
2124 if (! elf_bad_symtab (input_bfd))
2125 extsymoff = symtab_hdr->sh_info;
2128 /* The symbol table does not follow the rule that local symbols
2129 must come before globals. */
2133 /* Figure out the value of the symbol. */
2136 Elf_Internal_Sym *sym;
2138 sym = local_syms + r_symndx;
2139 sec = local_sections[r_symndx];
2141 symbol = sec->output_section->vma + sec->output_offset;
2142 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION
2143 || (sec->flags & SEC_MERGE))
2144 symbol += sym->st_value;
2145 if ((sec->flags & SEC_MERGE)
2146 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2148 addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend);
2150 addend += sec->output_section->vma + sec->output_offset;
2153 /* MIPS16 text labels should be treated as odd. */
2154 if (sym->st_other == STO_MIPS16)
2157 /* Record the name of this symbol, for our caller. */
2158 *namep = bfd_elf_string_from_elf_section (input_bfd,
2159 symtab_hdr->sh_link,
2162 *namep = bfd_section_name (input_bfd, sec);
2164 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
2168 /* For global symbols we look up the symbol in the hash-table. */
2169 h = ((struct mips_elf_link_hash_entry *)
2170 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
2171 /* Find the real hash-table entry for this symbol. */
2172 while (h->root.root.type == bfd_link_hash_indirect
2173 || h->root.root.type == bfd_link_hash_warning)
2174 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
2176 /* Record the name of this symbol, for our caller. */
2177 *namep = h->root.root.root.string;
2179 /* See if this is the special _gp_disp symbol. Note that such a
2180 symbol must always be a global symbol. */
2181 if (strcmp (h->root.root.root.string, "_gp_disp") == 0
2182 && ! NEWABI_P (input_bfd))
2184 /* Relocations against _gp_disp are permitted only with
2185 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
2186 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
2187 return bfd_reloc_notsupported;
2191 /* If this symbol is defined, calculate its address. Note that
2192 _gp_disp is a magic symbol, always implicitly defined by the
2193 linker, so it's inappropriate to check to see whether or not
2195 else if ((h->root.root.type == bfd_link_hash_defined
2196 || h->root.root.type == bfd_link_hash_defweak)
2197 && h->root.root.u.def.section)
2199 sec = h->root.root.u.def.section;
2200 if (sec->output_section)
2201 symbol = (h->root.root.u.def.value
2202 + sec->output_section->vma
2203 + sec->output_offset);
2205 symbol = h->root.root.u.def.value;
2207 else if (h->root.root.type == bfd_link_hash_undefweak)
2208 /* We allow relocations against undefined weak symbols, giving
2209 it the value zero, so that you can undefined weak functions
2210 and check to see if they exist by looking at their
2213 else if (info->shared
2214 && (!info->symbolic || info->allow_shlib_undefined)
2215 && !info->no_undefined
2216 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
2218 else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
2219 strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
2221 /* If this is a dynamic link, we should have created a
2222 _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
2223 in in _bfd_mips_elf_create_dynamic_sections.
2224 Otherwise, we should define the symbol with a value of 0.
2225 FIXME: It should probably get into the symbol table
2227 BFD_ASSERT (! info->shared);
2228 BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
2233 if (! ((*info->callbacks->undefined_symbol)
2234 (info, h->root.root.root.string, input_bfd,
2235 input_section, relocation->r_offset,
2236 (!info->shared || info->no_undefined
2237 || ELF_ST_VISIBILITY (h->root.other)))))
2238 return bfd_reloc_undefined;
2242 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
2245 /* If this is a 32- or 64-bit call to a 16-bit function with a stub, we
2246 need to redirect the call to the stub, unless we're already *in*
2248 if (r_type != R_MIPS16_26 && !info->relocateable
2249 && ((h != NULL && h->fn_stub != NULL)
2250 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
2251 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
2252 && !mips_elf_stub_section_p (input_bfd, input_section))
2254 /* This is a 32- or 64-bit call to a 16-bit function. We should
2255 have already noticed that we were going to need the
2258 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
2261 BFD_ASSERT (h->need_fn_stub);
2265 symbol = sec->output_section->vma + sec->output_offset;
2267 /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we
2268 need to redirect the call to the stub. */
2269 else if (r_type == R_MIPS16_26 && !info->relocateable
2271 && (h->call_stub != NULL || h->call_fp_stub != NULL)
2272 && !target_is_16_bit_code_p)
2274 /* If both call_stub and call_fp_stub are defined, we can figure
2275 out which one to use by seeing which one appears in the input
2277 if (h->call_stub != NULL && h->call_fp_stub != NULL)
2282 for (o = input_bfd->sections; o != NULL; o = o->next)
2284 if (strncmp (bfd_get_section_name (input_bfd, o),
2285 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
2287 sec = h->call_fp_stub;
2294 else if (h->call_stub != NULL)
2297 sec = h->call_fp_stub;
2299 BFD_ASSERT (sec->_raw_size > 0);
2300 symbol = sec->output_section->vma + sec->output_offset;
2303 /* Calls from 16-bit code to 32-bit code and vice versa require the
2304 special jalx instruction. */
2305 *require_jalxp = (!info->relocateable
2306 && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p)
2307 || ((r_type == R_MIPS_26) && target_is_16_bit_code_p)));
2309 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
2310 local_sections, TRUE);
2312 /* If we haven't already determined the GOT offset, or the GP value,
2313 and we're going to need it, get it now. */
2318 case R_MIPS_GOT_DISP:
2319 case R_MIPS_GOT_HI16:
2320 case R_MIPS_CALL_HI16:
2321 case R_MIPS_GOT_LO16:
2322 case R_MIPS_CALL_LO16:
2323 /* Find the index into the GOT where this value is located. */
2326 BFD_ASSERT (addend == 0);
2327 g = mips_elf_global_got_index (elf_hash_table (info)->dynobj,
2328 (struct elf_link_hash_entry *) h);
2329 if (! elf_hash_table(info)->dynamic_sections_created
2331 && (info->symbolic || h->root.dynindx == -1)
2332 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2334 /* This is a static link or a -Bsymbolic link. The
2335 symbol is defined locally, or was forced to be local.
2336 We must initialize this entry in the GOT. */
2337 bfd *tmpbfd = elf_hash_table (info)->dynobj;
2338 asection *sgot = mips_elf_got_section(tmpbfd);
2339 MIPS_ELF_PUT_WORD (tmpbfd, symbol + addend, sgot->contents + g);
2342 else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
2343 /* There's no need to create a local GOT entry here; the
2344 calculation for a local GOT16 entry does not involve G. */
2348 g = mips_elf_local_got_index (abfd, info, symbol + addend);
2350 return bfd_reloc_outofrange;
2353 /* Convert GOT indices to actual offsets. */
2354 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2360 case R_MIPS16_GPREL:
2361 case R_MIPS_GPREL16:
2362 case R_MIPS_GPREL32:
2363 case R_MIPS_LITERAL:
2364 gp0 = _bfd_get_gp_value (input_bfd);
2365 gp = _bfd_get_gp_value (abfd);
2372 /* Figure out what kind of relocation is being performed. */
2376 return bfd_reloc_continue;
2379 value = symbol + mips_elf_sign_extend (addend, 16);
2380 overflowed_p = mips_elf_overflow_p (value, 16);
2387 || (elf_hash_table (info)->dynamic_sections_created
2389 && ((h->root.elf_link_hash_flags
2390 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
2391 && ((h->root.elf_link_hash_flags
2392 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
2394 && (input_section->flags & SEC_ALLOC) != 0)
2396 /* If we're creating a shared library, or this relocation is
2397 against a symbol in a shared library, then we can't know
2398 where the symbol will end up. So, we create a relocation
2399 record in the output, and leave the job up to the dynamic
2402 if (!mips_elf_create_dynamic_relocation (abfd,
2410 return bfd_reloc_undefined;
2414 if (r_type != R_MIPS_REL32)
2415 value = symbol + addend;
2419 value &= howto->dst_mask;
2424 case R_MIPS_GNU_REL_LO16:
2425 value = symbol + addend - p;
2426 value &= howto->dst_mask;
2429 case R_MIPS_GNU_REL16_S2:
2430 value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
2431 overflowed_p = mips_elf_overflow_p (value, 18);
2432 value = (value >> 2) & howto->dst_mask;
2435 case R_MIPS_GNU_REL_HI16:
2436 /* Instead of subtracting 'p' here, we should be subtracting the
2437 equivalent value for the LO part of the reloc, since the value
2438 here is relative to that address. Because that's not easy to do,
2439 we adjust 'addend' in _bfd_mips_elf_relocate_section(). See also
2440 the comment there for more information. */
2441 value = mips_elf_high (addend + symbol - p);
2442 value &= howto->dst_mask;
2446 /* The calculation for R_MIPS16_26 is just the same as for an
2447 R_MIPS_26. It's only the storage of the relocated field into
2448 the output file that's different. That's handled in
2449 mips_elf_perform_relocation. So, we just fall through to the
2450 R_MIPS_26 case here. */
2453 value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
2455 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
2456 value &= howto->dst_mask;
2462 value = mips_elf_high (addend + symbol);
2463 value &= howto->dst_mask;
2467 value = mips_elf_high (addend + gp - p);
2468 overflowed_p = mips_elf_overflow_p (value, 16);
2474 value = (symbol + addend) & howto->dst_mask;
2477 value = addend + gp - p + 4;
2478 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
2479 for overflow. But, on, say, IRIX5, relocations against
2480 _gp_disp are normally generated from the .cpload
2481 pseudo-op. It generates code that normally looks like
2484 lui $gp,%hi(_gp_disp)
2485 addiu $gp,$gp,%lo(_gp_disp)
2488 Here $t9 holds the address of the function being called,
2489 as required by the MIPS ELF ABI. The R_MIPS_LO16
2490 relocation can easily overflow in this situation, but the
2491 R_MIPS_HI16 relocation will handle the overflow.
2492 Therefore, we consider this a bug in the MIPS ABI, and do
2493 not check for overflow here. */
2497 case R_MIPS_LITERAL:
2498 /* Because we don't merge literal sections, we can handle this
2499 just like R_MIPS_GPREL16. In the long run, we should merge
2500 shared literals, and then we will need to additional work
2505 case R_MIPS16_GPREL:
2506 /* The R_MIPS16_GPREL performs the same calculation as
2507 R_MIPS_GPREL16, but stores the relocated bits in a different
2508 order. We don't need to do anything special here; the
2509 differences are handled in mips_elf_perform_relocation. */
2510 case R_MIPS_GPREL16:
2511 /* Only sign-extend the addend if it was extracted from the
2512 instruction. If the addend was separate, leave it alone,
2513 otherwise we may lose significant bits. */
2514 if (howto->partial_inplace)
2515 addend = mips_elf_sign_extend (addend, 16);
2516 value = symbol + addend - gp;
2517 /* If the symbol was local, any earlier relocatable links will
2518 have adjusted its addend with the gp offset, so compensate
2519 for that now. Don't do it for symbols forced local in this
2520 link, though, since they won't have had the gp offset applied
2524 overflowed_p = mips_elf_overflow_p (value, 16);
2533 /* The special case is when the symbol is forced to be local. We
2534 need the full address in the GOT since no R_MIPS_LO16 relocation
2536 forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
2537 local_sections, FALSE);
2538 value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
2539 if (value == MINUS_ONE)
2540 return bfd_reloc_outofrange;
2542 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2544 overflowed_p = mips_elf_overflow_p (value, 16);
2550 case R_MIPS_GOT_DISP:
2552 overflowed_p = mips_elf_overflow_p (value, 16);
2555 case R_MIPS_GPREL32:
2556 value = (addend + symbol + gp0 - gp);
2558 value &= howto->dst_mask;
2562 value = mips_elf_sign_extend (addend, 16) + symbol - p;
2563 overflowed_p = mips_elf_overflow_p (value, 16);
2564 value = (bfd_vma) ((bfd_signed_vma) value / 4);
2567 case R_MIPS_GOT_HI16:
2568 case R_MIPS_CALL_HI16:
2569 /* We're allowed to handle these two relocations identically.
2570 The dynamic linker is allowed to handle the CALL relocations
2571 differently by creating a lazy evaluation stub. */
2573 value = mips_elf_high (value);
2574 value &= howto->dst_mask;
2577 case R_MIPS_GOT_LO16:
2578 case R_MIPS_CALL_LO16:
2579 value = g & howto->dst_mask;
2582 case R_MIPS_GOT_PAGE:
2583 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
2584 if (value == MINUS_ONE)
2585 return bfd_reloc_outofrange;
2586 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2588 overflowed_p = mips_elf_overflow_p (value, 16);
2591 case R_MIPS_GOT_OFST:
2592 mips_elf_got_page (abfd, info, symbol + addend, &value);
2593 overflowed_p = mips_elf_overflow_p (value, 16);
2597 value = symbol - addend;
2598 value &= howto->dst_mask;
2602 value = mips_elf_higher (addend + symbol);
2603 value &= howto->dst_mask;
2606 case R_MIPS_HIGHEST:
2607 value = mips_elf_highest (addend + symbol);
2608 value &= howto->dst_mask;
2611 case R_MIPS_SCN_DISP:
2612 value = symbol + addend - sec->output_offset;
2613 value &= howto->dst_mask;
2618 /* Both of these may be ignored. R_MIPS_JALR is an optimization
2619 hint; we could improve performance by honoring that hint. */
2620 return bfd_reloc_continue;
2622 case R_MIPS_GNU_VTINHERIT:
2623 case R_MIPS_GNU_VTENTRY:
2624 /* We don't do anything with these at present. */
2625 return bfd_reloc_continue;
2628 /* An unrecognized relocation type. */
2629 return bfd_reloc_notsupported;
2632 /* Store the VALUE for our caller. */
2634 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
2637 /* Obtain the field relocated by RELOCATION. */
2640 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
2641 reloc_howto_type *howto;
2642 const Elf_Internal_Rela *relocation;
2647 bfd_byte *location = contents + relocation->r_offset;
2649 /* Obtain the bytes. */
2650 x = bfd_get ((8 * bfd_get_reloc_size (howto)), input_bfd, location);
2652 if ((ELF_R_TYPE (input_bfd, relocation->r_info) == R_MIPS16_26
2653 || ELF_R_TYPE (input_bfd, relocation->r_info) == R_MIPS16_GPREL)
2654 && bfd_little_endian (input_bfd))
2655 /* The two 16-bit words will be reversed on a little-endian system.
2656 See mips_elf_perform_relocation for more details. */
2657 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
2662 /* It has been determined that the result of the RELOCATION is the
2663 VALUE. Use HOWTO to place VALUE into the output file at the
2664 appropriate position. The SECTION is the section to which the
2665 relocation applies. If REQUIRE_JALX is TRUE, then the opcode used
2666 for the relocation must be either JAL or JALX, and it is
2667 unconditionally converted to JALX.
2669 Returns FALSE if anything goes wrong. */
2672 mips_elf_perform_relocation (info, howto, relocation, value, input_bfd,
2673 input_section, contents, require_jalx)
2674 struct bfd_link_info *info;
2675 reloc_howto_type *howto;
2676 const Elf_Internal_Rela *relocation;
2679 asection *input_section;
2681 bfd_boolean require_jalx;
2685 int r_type = ELF_R_TYPE (input_bfd, relocation->r_info);
2687 /* Figure out where the relocation is occurring. */
2688 location = contents + relocation->r_offset;
2690 /* Obtain the current value. */
2691 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
2693 /* Clear the field we are setting. */
2694 x &= ~howto->dst_mask;
2696 /* If this is the R_MIPS16_26 relocation, we must store the
2697 value in a funny way. */
2698 if (r_type == R_MIPS16_26)
2700 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
2701 Most mips16 instructions are 16 bits, but these instructions
2704 The format of these instructions is:
2706 +--------------+--------------------------------+
2707 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
2708 +--------------+--------------------------------+
2710 +-----------------------------------------------+
2712 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
2713 Note that the immediate value in the first word is swapped.
2715 When producing a relocateable object file, R_MIPS16_26 is
2716 handled mostly like R_MIPS_26. In particular, the addend is
2717 stored as a straight 26-bit value in a 32-bit instruction.
2718 (gas makes life simpler for itself by never adjusting a
2719 R_MIPS16_26 reloc to be against a section, so the addend is
2720 always zero). However, the 32 bit instruction is stored as 2
2721 16-bit values, rather than a single 32-bit value. In a
2722 big-endian file, the result is the same; in a little-endian
2723 file, the two 16-bit halves of the 32 bit value are swapped.
2724 This is so that a disassembler can recognize the jal
2727 When doing a final link, R_MIPS16_26 is treated as a 32 bit
2728 instruction stored as two 16-bit values. The addend A is the
2729 contents of the targ26 field. The calculation is the same as
2730 R_MIPS_26. When storing the calculated value, reorder the
2731 immediate value as shown above, and don't forget to store the
2732 value as two 16-bit values.
2734 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
2738 +--------+----------------------+
2742 +--------+----------------------+
2745 +----------+------+-------------+
2749 +----------+--------------------+
2750 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
2751 ((sub1 << 16) | sub2)).
2753 When producing a relocateable object file, the calculation is
2754 (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
2755 When producing a fully linked file, the calculation is
2756 let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
2757 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
2759 if (!info->relocateable)
2760 /* Shuffle the bits according to the formula above. */
2761 value = (((value & 0x1f0000) << 5)
2762 | ((value & 0x3e00000) >> 5)
2763 | (value & 0xffff));
2765 else if (r_type == R_MIPS16_GPREL)
2767 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
2768 mode. A typical instruction will have a format like this:
2770 +--------------+--------------------------------+
2771 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
2772 +--------------+--------------------------------+
2773 ! Major ! rx ! ry ! Imm 4:0 !
2774 +--------------+--------------------------------+
2776 EXTEND is the five bit value 11110. Major is the instruction
2779 This is handled exactly like R_MIPS_GPREL16, except that the
2780 addend is retrieved and stored as shown in this diagram; that
2781 is, the Imm fields above replace the V-rel16 field.
2783 All we need to do here is shuffle the bits appropriately. As
2784 above, the two 16-bit halves must be swapped on a
2785 little-endian system. */
2786 value = (((value & 0x7e0) << 16)
2787 | ((value & 0xf800) << 5)
2791 /* Set the field. */
2792 x |= (value & howto->dst_mask);
2794 /* If required, turn JAL into JALX. */
2798 bfd_vma opcode = x >> 26;
2799 bfd_vma jalx_opcode;
2801 /* Check to see if the opcode is already JAL or JALX. */
2802 if (r_type == R_MIPS16_26)
2804 ok = ((opcode == 0x6) || (opcode == 0x7));
2809 ok = ((opcode == 0x3) || (opcode == 0x1d));
2813 /* If the opcode is not JAL or JALX, there's a problem. */
2816 (*_bfd_error_handler)
2817 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
2818 bfd_archive_filename (input_bfd),
2819 input_section->name,
2820 (unsigned long) relocation->r_offset);
2821 bfd_set_error (bfd_error_bad_value);
2825 /* Make this the JALX opcode. */
2826 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
2829 /* Swap the high- and low-order 16 bits on little-endian systems
2830 when doing a MIPS16 relocation. */
2831 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
2832 && bfd_little_endian (input_bfd))
2833 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
2835 /* Put the value into the output. */
2836 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
2840 /* Returns TRUE if SECTION is a MIPS16 stub section. */
2843 mips_elf_stub_section_p (abfd, section)
2844 bfd *abfd ATTRIBUTE_UNUSED;
2847 const char *name = bfd_get_section_name (abfd, section);
2849 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
2850 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
2851 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
2854 /* Add room for N relocations to the .rel.dyn section in ABFD. */
2857 mips_elf_allocate_dynamic_relocations (abfd, n)
2863 s = bfd_get_section_by_name (abfd, ".rel.dyn");
2864 BFD_ASSERT (s != NULL);
2866 if (s->_raw_size == 0)
2868 /* Make room for a null element. */
2869 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
2872 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
2875 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
2876 is the original relocation, which is now being transformed into a
2877 dynamic relocation. The ADDENDP is adjusted if necessary; the
2878 caller should store the result in place of the original addend. */
2881 mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
2882 symbol, addendp, input_section)
2884 struct bfd_link_info *info;
2885 const Elf_Internal_Rela *rel;
2886 struct mips_elf_link_hash_entry *h;
2890 asection *input_section;
2892 Elf_Internal_Rela outrel[3];
2898 r_type = ELF_R_TYPE (output_bfd, rel->r_info);
2899 dynobj = elf_hash_table (info)->dynobj;
2900 sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn");
2901 BFD_ASSERT (sreloc != NULL);
2902 BFD_ASSERT (sreloc->contents != NULL);
2903 BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd)
2904 < sreloc->_raw_size);
2907 outrel[0].r_offset =
2908 _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset);
2909 outrel[1].r_offset =
2910 _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset);
2911 outrel[2].r_offset =
2912 _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset);
2915 /* We begin by assuming that the offset for the dynamic relocation
2916 is the same as for the original relocation. We'll adjust this
2917 later to reflect the correct output offsets. */
2918 if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS)
2920 outrel[1].r_offset = rel[1].r_offset;
2921 outrel[2].r_offset = rel[2].r_offset;
2925 /* Except that in a stab section things are more complex.
2926 Because we compress stab information, the offset given in the
2927 relocation may not be the one we want; we must let the stabs
2928 machinery tell us the offset. */
2929 outrel[1].r_offset = outrel[0].r_offset;
2930 outrel[2].r_offset = outrel[0].r_offset;
2931 /* If we didn't need the relocation at all, this value will be
2933 if (outrel[0].r_offset == (bfd_vma) -1)
2938 if (outrel[0].r_offset == (bfd_vma) -1)
2940 /* FIXME: For -2 runtime relocation needs to be skipped, but
2941 properly resolved statically and installed. */
2942 BFD_ASSERT (outrel[0].r_offset != (bfd_vma) -2);
2944 /* If we've decided to skip this relocation, just output an empty
2945 record. Note that R_MIPS_NONE == 0, so that this call to memset
2946 is a way of setting R_TYPE to R_MIPS_NONE. */
2948 memset (outrel, 0, sizeof (Elf_Internal_Rela) * 3);
2952 bfd_vma section_offset;
2954 /* We must now calculate the dynamic symbol table index to use
2955 in the relocation. */
2957 && (! info->symbolic || (h->root.elf_link_hash_flags
2958 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2960 indx = h->root.dynindx;
2961 /* h->root.dynindx may be -1 if this symbol was marked to
2968 if (sec != NULL && bfd_is_abs_section (sec))
2970 else if (sec == NULL || sec->owner == NULL)
2972 bfd_set_error (bfd_error_bad_value);
2977 indx = elf_section_data (sec->output_section)->dynindx;
2982 /* Figure out how far the target of the relocation is from
2983 the beginning of its section. */
2984 section_offset = symbol - sec->output_section->vma;
2985 /* The relocation we're building is section-relative.
2986 Therefore, the original addend must be adjusted by the
2988 *addendp += section_offset;
2989 /* Now, the relocation is just against the section. */
2990 symbol = sec->output_section->vma;
2993 /* If the relocation was previously an absolute relocation and
2994 this symbol will not be referred to by the relocation, we must
2995 adjust it by the value we give it in the dynamic symbol table.
2996 Otherwise leave the job up to the dynamic linker. */
2997 if (!indx && r_type != R_MIPS_REL32)
3000 /* The relocation is always an REL32 relocation because we don't
3001 know where the shared library will wind up at load-time. */
3002 outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx,
3004 outrel[1].r_info = ELF_R_INFO (output_bfd, (unsigned long) 0,
3005 ABI_64_P (output_bfd)
3008 outrel[2].r_info = ELF_R_INFO (output_bfd, (unsigned long) 0,
3011 /* Adjust the output offset of the relocation to reference the
3012 correct location in the output file. */
3013 outrel[0].r_offset += (input_section->output_section->vma
3014 + input_section->output_offset);
3015 outrel[1].r_offset += (input_section->output_section->vma
3016 + input_section->output_offset);
3017 outrel[2].r_offset += (input_section->output_section->vma
3018 + input_section->output_offset);
3021 /* Put the relocation back out. We have to use the special
3022 relocation outputter in the 64-bit case since the 64-bit
3023 relocation format is non-standard. */
3024 if (ABI_64_P (output_bfd))
3026 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
3027 (output_bfd, &outrel[0],
3029 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
3032 bfd_elf32_swap_reloc_out
3033 (output_bfd, &outrel[0],
3034 (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel)));
3036 /* Record the index of the first relocation referencing H. This
3037 information is later emitted in the .msym section. */
3039 && (h->min_dyn_reloc_index == 0
3040 || sreloc->reloc_count < h->min_dyn_reloc_index))
3041 h->min_dyn_reloc_index = sreloc->reloc_count;
3043 /* We've now added another relocation. */
3044 ++sreloc->reloc_count;
3046 /* Make sure the output section is writable. The dynamic linker
3047 will be writing to it. */
3048 elf_section_data (input_section->output_section)->this_hdr.sh_flags
3051 /* On IRIX5, make an entry of compact relocation info. */
3052 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
3054 asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
3059 Elf32_crinfo cptrel;
3061 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
3062 cptrel.vaddr = (rel->r_offset
3063 + input_section->output_section->vma
3064 + input_section->output_offset);
3065 if (r_type == R_MIPS_REL32)
3066 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
3068 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
3069 mips_elf_set_cr_dist2to (cptrel, 0);
3070 cptrel.konst = *addendp;
3072 cr = (scpt->contents
3073 + sizeof (Elf32_External_compact_rel));
3074 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
3075 ((Elf32_External_crinfo *) cr
3076 + scpt->reloc_count));
3077 ++scpt->reloc_count;
3084 /* Return the ISA for a MIPS e_flags value. */
3087 elf_mips_isa (flags)
3090 switch (flags & EF_MIPS_ARCH)
3102 case E_MIPS_ARCH_32:
3104 case E_MIPS_ARCH_64:
3110 /* Return the MACH for a MIPS e_flags value. */
3113 _bfd_elf_mips_mach (flags)
3116 switch (flags & EF_MIPS_MACH)
3118 case E_MIPS_MACH_3900:
3119 return bfd_mach_mips3900;
3121 case E_MIPS_MACH_4010:
3122 return bfd_mach_mips4010;
3124 case E_MIPS_MACH_4100:
3125 return bfd_mach_mips4100;
3127 case E_MIPS_MACH_4111:
3128 return bfd_mach_mips4111;
3130 case E_MIPS_MACH_4120:
3131 return bfd_mach_mips4120;
3133 case E_MIPS_MACH_4650:
3134 return bfd_mach_mips4650;
3136 case E_MIPS_MACH_5400:
3137 return bfd_mach_mips5400;
3139 case E_MIPS_MACH_5500:
3140 return bfd_mach_mips5500;
3142 case E_MIPS_MACH_SB1:
3143 return bfd_mach_mips_sb1;
3146 switch (flags & EF_MIPS_ARCH)
3150 return bfd_mach_mips3000;
3154 return bfd_mach_mips6000;
3158 return bfd_mach_mips4000;
3162 return bfd_mach_mips8000;
3166 return bfd_mach_mips5;
3169 case E_MIPS_ARCH_32:
3170 return bfd_mach_mipsisa32;
3173 case E_MIPS_ARCH_64:
3174 return bfd_mach_mipsisa64;
3182 /* Return printable name for ABI. */
3184 static INLINE char *
3185 elf_mips_abi_name (abfd)
3190 flags = elf_elfheader (abfd)->e_flags;
3191 switch (flags & EF_MIPS_ABI)
3194 if (ABI_N32_P (abfd))
3196 else if (ABI_64_P (abfd))
3200 case E_MIPS_ABI_O32:
3202 case E_MIPS_ABI_O64:
3204 case E_MIPS_ABI_EABI32:
3206 case E_MIPS_ABI_EABI64:
3209 return "unknown abi";
3213 /* MIPS ELF uses two common sections. One is the usual one, and the
3214 other is for small objects. All the small objects are kept
3215 together, and then referenced via the gp pointer, which yields
3216 faster assembler code. This is what we use for the small common
3217 section. This approach is copied from ecoff.c. */
3218 static asection mips_elf_scom_section;
3219 static asymbol mips_elf_scom_symbol;
3220 static asymbol *mips_elf_scom_symbol_ptr;
3222 /* MIPS ELF also uses an acommon section, which represents an
3223 allocated common symbol which may be overridden by a
3224 definition in a shared library. */
3225 static asection mips_elf_acom_section;
3226 static asymbol mips_elf_acom_symbol;
3227 static asymbol *mips_elf_acom_symbol_ptr;
3229 /* Handle the special MIPS section numbers that a symbol may use.
3230 This is used for both the 32-bit and the 64-bit ABI. */
3233 _bfd_mips_elf_symbol_processing (abfd, asym)
3237 elf_symbol_type *elfsym;
3239 elfsym = (elf_symbol_type *) asym;
3240 switch (elfsym->internal_elf_sym.st_shndx)
3242 case SHN_MIPS_ACOMMON:
3243 /* This section is used in a dynamically linked executable file.
3244 It is an allocated common section. The dynamic linker can
3245 either resolve these symbols to something in a shared
3246 library, or it can just leave them here. For our purposes,
3247 we can consider these symbols to be in a new section. */
3248 if (mips_elf_acom_section.name == NULL)
3250 /* Initialize the acommon section. */
3251 mips_elf_acom_section.name = ".acommon";
3252 mips_elf_acom_section.flags = SEC_ALLOC;
3253 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3254 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3255 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3256 mips_elf_acom_symbol.name = ".acommon";
3257 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3258 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3259 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3261 asym->section = &mips_elf_acom_section;
3265 /* Common symbols less than the GP size are automatically
3266 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3267 if (asym->value > elf_gp_size (abfd)
3268 || IRIX_COMPAT (abfd) == ict_irix6)
3271 case SHN_MIPS_SCOMMON:
3272 if (mips_elf_scom_section.name == NULL)
3274 /* Initialize the small common section. */
3275 mips_elf_scom_section.name = ".scommon";
3276 mips_elf_scom_section.flags = SEC_IS_COMMON;
3277 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3278 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3279 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3280 mips_elf_scom_symbol.name = ".scommon";
3281 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3282 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3283 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3285 asym->section = &mips_elf_scom_section;
3286 asym->value = elfsym->internal_elf_sym.st_size;
3289 case SHN_MIPS_SUNDEFINED:
3290 asym->section = bfd_und_section_ptr;
3293 #if 0 /* for SGI_COMPAT */
3295 asym->section = mips_elf_text_section_ptr;
3299 asym->section = mips_elf_data_section_ptr;
3305 /* Work over a section just before writing it out. This routine is
3306 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
3307 sections that need the SHF_MIPS_GPREL flag by name; there has to be
3311 _bfd_mips_elf_section_processing (abfd, hdr)
3313 Elf_Internal_Shdr *hdr;
3315 if (hdr->sh_type == SHT_MIPS_REGINFO
3316 && hdr->sh_size > 0)
3320 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
3321 BFD_ASSERT (hdr->contents == NULL);
3324 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
3327 H_PUT_32 (abfd, elf_gp (abfd), buf);
3328 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3332 if (hdr->sh_type == SHT_MIPS_OPTIONS
3333 && hdr->bfd_section != NULL
3334 && elf_section_data (hdr->bfd_section) != NULL
3335 && elf_section_data (hdr->bfd_section)->tdata != NULL)
3337 bfd_byte *contents, *l, *lend;
3339 /* We stored the section contents in the elf_section_data tdata
3340 field in the set_section_contents routine. We save the
3341 section contents so that we don't have to read them again.
3342 At this point we know that elf_gp is set, so we can look
3343 through the section contents to see if there is an
3344 ODK_REGINFO structure. */
3346 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
3348 lend = contents + hdr->sh_size;
3349 while (l + sizeof (Elf_External_Options) <= lend)
3351 Elf_Internal_Options intopt;
3353 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3355 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3362 + sizeof (Elf_External_Options)
3363 + (sizeof (Elf64_External_RegInfo) - 8)),
3366 H_PUT_64 (abfd, elf_gp (abfd), buf);
3367 if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8)
3370 else if (intopt.kind == ODK_REGINFO)
3377 + sizeof (Elf_External_Options)
3378 + (sizeof (Elf32_External_RegInfo) - 4)),
3381 H_PUT_32 (abfd, elf_gp (abfd), buf);
3382 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3389 if (hdr->bfd_section != NULL)
3391 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3393 if (strcmp (name, ".sdata") == 0
3394 || strcmp (name, ".lit8") == 0
3395 || strcmp (name, ".lit4") == 0)
3397 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3398 hdr->sh_type = SHT_PROGBITS;
3400 else if (strcmp (name, ".sbss") == 0)
3402 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3403 hdr->sh_type = SHT_NOBITS;
3405 else if (strcmp (name, ".srdata") == 0)
3407 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3408 hdr->sh_type = SHT_PROGBITS;
3410 else if (strcmp (name, ".compact_rel") == 0)
3413 hdr->sh_type = SHT_PROGBITS;
3415 else if (strcmp (name, ".rtproc") == 0)
3417 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3419 unsigned int adjust;
3421 adjust = hdr->sh_size % hdr->sh_addralign;
3423 hdr->sh_size += hdr->sh_addralign - adjust;
3431 /* Handle a MIPS specific section when reading an object file. This
3432 is called when elfcode.h finds a section with an unknown type.
3433 This routine supports both the 32-bit and 64-bit ELF ABI.
3435 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
3439 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
3441 Elf_Internal_Shdr *hdr;
3446 /* There ought to be a place to keep ELF backend specific flags, but
3447 at the moment there isn't one. We just keep track of the
3448 sections by their name, instead. Fortunately, the ABI gives
3449 suggested names for all the MIPS specific sections, so we will
3450 probably get away with this. */
3451 switch (hdr->sh_type)
3453 case SHT_MIPS_LIBLIST:
3454 if (strcmp (name, ".liblist") != 0)
3458 if (strcmp (name, ".msym") != 0)
3461 case SHT_MIPS_CONFLICT:
3462 if (strcmp (name, ".conflict") != 0)
3465 case SHT_MIPS_GPTAB:
3466 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
3469 case SHT_MIPS_UCODE:
3470 if (strcmp (name, ".ucode") != 0)
3473 case SHT_MIPS_DEBUG:
3474 if (strcmp (name, ".mdebug") != 0)
3476 flags = SEC_DEBUGGING;
3478 case SHT_MIPS_REGINFO:
3479 if (strcmp (name, ".reginfo") != 0
3480 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
3482 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
3484 case SHT_MIPS_IFACE:
3485 if (strcmp (name, ".MIPS.interfaces") != 0)
3488 case SHT_MIPS_CONTENT:
3489 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
3492 case SHT_MIPS_OPTIONS:
3493 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
3496 case SHT_MIPS_DWARF:
3497 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
3500 case SHT_MIPS_SYMBOL_LIB:
3501 if (strcmp (name, ".MIPS.symlib") != 0)
3504 case SHT_MIPS_EVENTS:
3505 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
3506 && strncmp (name, ".MIPS.post_rel",
3507 sizeof ".MIPS.post_rel" - 1) != 0)
3514 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
3519 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
3520 (bfd_get_section_flags (abfd,
3526 /* FIXME: We should record sh_info for a .gptab section. */
3528 /* For a .reginfo section, set the gp value in the tdata information
3529 from the contents of this section. We need the gp value while
3530 processing relocs, so we just get it now. The .reginfo section
3531 is not used in the 64-bit MIPS ELF ABI. */
3532 if (hdr->sh_type == SHT_MIPS_REGINFO)
3534 Elf32_External_RegInfo ext;
3537 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
3539 (bfd_size_type) sizeof ext))
3541 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
3542 elf_gp (abfd) = s.ri_gp_value;
3545 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
3546 set the gp value based on what we find. We may see both
3547 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
3548 they should agree. */
3549 if (hdr->sh_type == SHT_MIPS_OPTIONS)
3551 bfd_byte *contents, *l, *lend;
3553 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
3554 if (contents == NULL)
3556 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
3557 (file_ptr) 0, hdr->sh_size))
3563 lend = contents + hdr->sh_size;
3564 while (l + sizeof (Elf_External_Options) <= lend)
3566 Elf_Internal_Options intopt;
3568 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3570 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3572 Elf64_Internal_RegInfo intreg;
3574 bfd_mips_elf64_swap_reginfo_in
3576 ((Elf64_External_RegInfo *)
3577 (l + sizeof (Elf_External_Options))),
3579 elf_gp (abfd) = intreg.ri_gp_value;
3581 else if (intopt.kind == ODK_REGINFO)
3583 Elf32_RegInfo intreg;
3585 bfd_mips_elf32_swap_reginfo_in
3587 ((Elf32_External_RegInfo *)
3588 (l + sizeof (Elf_External_Options))),
3590 elf_gp (abfd) = intreg.ri_gp_value;
3600 /* Set the correct type for a MIPS ELF section. We do this by the
3601 section name, which is a hack, but ought to work. This routine is
3602 used by both the 32-bit and the 64-bit ABI. */
3605 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
3607 Elf_Internal_Shdr *hdr;
3610 register const char *name;
3612 name = bfd_get_section_name (abfd, sec);
3614 if (strcmp (name, ".liblist") == 0)
3616 hdr->sh_type = SHT_MIPS_LIBLIST;
3617 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
3618 /* The sh_link field is set in final_write_processing. */
3620 else if (strcmp (name, ".conflict") == 0)
3621 hdr->sh_type = SHT_MIPS_CONFLICT;
3622 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
3624 hdr->sh_type = SHT_MIPS_GPTAB;
3625 hdr->sh_entsize = sizeof (Elf32_External_gptab);
3626 /* The sh_info field is set in final_write_processing. */
3628 else if (strcmp (name, ".ucode") == 0)
3629 hdr->sh_type = SHT_MIPS_UCODE;
3630 else if (strcmp (name, ".mdebug") == 0)
3632 hdr->sh_type = SHT_MIPS_DEBUG;
3633 /* In a shared object on IRIX 5.3, the .mdebug section has an
3634 entsize of 0. FIXME: Does this matter? */
3635 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
3636 hdr->sh_entsize = 0;
3638 hdr->sh_entsize = 1;
3640 else if (strcmp (name, ".reginfo") == 0)
3642 hdr->sh_type = SHT_MIPS_REGINFO;
3643 /* In a shared object on IRIX 5.3, the .reginfo section has an
3644 entsize of 0x18. FIXME: Does this matter? */
3645 if (SGI_COMPAT (abfd))
3647 if ((abfd->flags & DYNAMIC) != 0)
3648 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3650 hdr->sh_entsize = 1;
3653 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3655 else if (SGI_COMPAT (abfd)
3656 && (strcmp (name, ".hash") == 0
3657 || strcmp (name, ".dynamic") == 0
3658 || strcmp (name, ".dynstr") == 0))
3660 if (SGI_COMPAT (abfd))
3661 hdr->sh_entsize = 0;
3663 /* This isn't how the IRIX6 linker behaves. */
3664 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
3667 else if (strcmp (name, ".got") == 0
3668 || strcmp (name, ".srdata") == 0
3669 || strcmp (name, ".sdata") == 0
3670 || strcmp (name, ".sbss") == 0
3671 || strcmp (name, ".lit4") == 0
3672 || strcmp (name, ".lit8") == 0)
3673 hdr->sh_flags |= SHF_MIPS_GPREL;
3674 else if (strcmp (name, ".MIPS.interfaces") == 0)
3676 hdr->sh_type = SHT_MIPS_IFACE;
3677 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3679 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
3681 hdr->sh_type = SHT_MIPS_CONTENT;
3682 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3683 /* The sh_info field is set in final_write_processing. */
3685 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3687 hdr->sh_type = SHT_MIPS_OPTIONS;
3688 hdr->sh_entsize = 1;
3689 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3691 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
3692 hdr->sh_type = SHT_MIPS_DWARF;
3693 else if (strcmp (name, ".MIPS.symlib") == 0)
3695 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
3696 /* The sh_link and sh_info fields are set in
3697 final_write_processing. */
3699 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
3700 || strncmp (name, ".MIPS.post_rel",
3701 sizeof ".MIPS.post_rel" - 1) == 0)
3703 hdr->sh_type = SHT_MIPS_EVENTS;
3704 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3705 /* The sh_link field is set in final_write_processing. */
3707 else if (strcmp (name, ".msym") == 0)
3709 hdr->sh_type = SHT_MIPS_MSYM;
3710 hdr->sh_flags |= SHF_ALLOC;
3711 hdr->sh_entsize = 8;
3714 /* The generic elf_fake_sections will set up REL_HDR using the
3715 default kind of relocations. But, we may actually need both
3716 kinds of relocations, so we set up the second header here.
3718 This is not necessary for the O32 ABI since that only uses Elf32_Rel
3719 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
3720 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
3721 of the resulting empty .rela.<section> sections starts with
3722 sh_offset == object size, and ld doesn't allow that. While the check
3723 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
3724 avoided by not emitting those useless sections in the first place. */
3725 if (! SGI_COMPAT (abfd) && ! NEWABI_P(abfd)
3726 && (sec->flags & SEC_RELOC) != 0)
3728 struct bfd_elf_section_data *esd;
3729 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
3731 esd = elf_section_data (sec);
3732 BFD_ASSERT (esd->rel_hdr2 == NULL);
3733 esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
3736 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
3737 !elf_section_data (sec)->use_rela_p);
3743 /* Given a BFD section, try to locate the corresponding ELF section
3744 index. This is used by both the 32-bit and the 64-bit ABI.
3745 Actually, it's not clear to me that the 64-bit ABI supports these,
3746 but for non-PIC objects we will certainly want support for at least
3747 the .scommon section. */
3750 _bfd_mips_elf_section_from_bfd_section (abfd, sec, retval)
3751 bfd *abfd ATTRIBUTE_UNUSED;
3755 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3757 *retval = SHN_MIPS_SCOMMON;
3760 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
3762 *retval = SHN_MIPS_ACOMMON;
3768 /* Hook called by the linker routine which adds symbols from an object
3769 file. We must handle the special MIPS section numbers here. */
3772 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
3774 struct bfd_link_info *info;
3775 const Elf_Internal_Sym *sym;
3777 flagword *flagsp ATTRIBUTE_UNUSED;
3781 if (SGI_COMPAT (abfd)
3782 && (abfd->flags & DYNAMIC) != 0
3783 && strcmp (*namep, "_rld_new_interface") == 0)
3785 /* Skip IRIX5 rld entry name. */
3790 switch (sym->st_shndx)
3793 /* Common symbols less than the GP size are automatically
3794 treated as SHN_MIPS_SCOMMON symbols. */
3795 if (sym->st_size > elf_gp_size (abfd)
3796 || IRIX_COMPAT (abfd) == ict_irix6)
3799 case SHN_MIPS_SCOMMON:
3800 *secp = bfd_make_section_old_way (abfd, ".scommon");
3801 (*secp)->flags |= SEC_IS_COMMON;
3802 *valp = sym->st_size;
3806 /* This section is used in a shared object. */
3807 if (elf_tdata (abfd)->elf_text_section == NULL)
3809 asymbol *elf_text_symbol;
3810 asection *elf_text_section;
3811 bfd_size_type amt = sizeof (asection);
3813 elf_text_section = bfd_zalloc (abfd, amt);
3814 if (elf_text_section == NULL)
3817 amt = sizeof (asymbol);
3818 elf_text_symbol = bfd_zalloc (abfd, amt);
3819 if (elf_text_symbol == NULL)
3822 /* Initialize the section. */
3824 elf_tdata (abfd)->elf_text_section = elf_text_section;
3825 elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
3827 elf_text_section->symbol = elf_text_symbol;
3828 elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
3830 elf_text_section->name = ".text";
3831 elf_text_section->flags = SEC_NO_FLAGS;
3832 elf_text_section->output_section = NULL;
3833 elf_text_section->owner = abfd;
3834 elf_text_symbol->name = ".text";
3835 elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3836 elf_text_symbol->section = elf_text_section;
3838 /* This code used to do *secp = bfd_und_section_ptr if
3839 info->shared. I don't know why, and that doesn't make sense,
3840 so I took it out. */
3841 *secp = elf_tdata (abfd)->elf_text_section;
3844 case SHN_MIPS_ACOMMON:
3845 /* Fall through. XXX Can we treat this as allocated data? */
3847 /* This section is used in a shared object. */
3848 if (elf_tdata (abfd)->elf_data_section == NULL)
3850 asymbol *elf_data_symbol;
3851 asection *elf_data_section;
3852 bfd_size_type amt = sizeof (asection);
3854 elf_data_section = bfd_zalloc (abfd, amt);
3855 if (elf_data_section == NULL)
3858 amt = sizeof (asymbol);
3859 elf_data_symbol = bfd_zalloc (abfd, amt);
3860 if (elf_data_symbol == NULL)
3863 /* Initialize the section. */
3865 elf_tdata (abfd)->elf_data_section = elf_data_section;
3866 elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
3868 elf_data_section->symbol = elf_data_symbol;
3869 elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
3871 elf_data_section->name = ".data";
3872 elf_data_section->flags = SEC_NO_FLAGS;
3873 elf_data_section->output_section = NULL;
3874 elf_data_section->owner = abfd;
3875 elf_data_symbol->name = ".data";
3876 elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3877 elf_data_symbol->section = elf_data_section;
3879 /* This code used to do *secp = bfd_und_section_ptr if
3880 info->shared. I don't know why, and that doesn't make sense,
3881 so I took it out. */
3882 *secp = elf_tdata (abfd)->elf_data_section;
3885 case SHN_MIPS_SUNDEFINED:
3886 *secp = bfd_und_section_ptr;
3890 if (SGI_COMPAT (abfd)
3892 && info->hash->creator == abfd->xvec
3893 && strcmp (*namep, "__rld_obj_head") == 0)
3895 struct elf_link_hash_entry *h;
3896 struct bfd_link_hash_entry *bh;
3898 /* Mark __rld_obj_head as dynamic. */
3900 if (! (_bfd_generic_link_add_one_symbol
3901 (info, abfd, *namep, BSF_GLOBAL, *secp,
3902 (bfd_vma) *valp, (const char *) NULL, FALSE,
3903 get_elf_backend_data (abfd)->collect, &bh)))
3906 h = (struct elf_link_hash_entry *) bh;
3907 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
3908 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3909 h->type = STT_OBJECT;
3911 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
3914 mips_elf_hash_table (info)->use_rld_obj_head = TRUE;
3917 /* If this is a mips16 text symbol, add 1 to the value to make it
3918 odd. This will cause something like .word SYM to come up with
3919 the right value when it is loaded into the PC. */
3920 if (sym->st_other == STO_MIPS16)
3926 /* This hook function is called before the linker writes out a global
3927 symbol. We mark symbols as small common if appropriate. This is
3928 also where we undo the increment of the value for a mips16 symbol. */
3931 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
3932 bfd *abfd ATTRIBUTE_UNUSED;
3933 struct bfd_link_info *info ATTRIBUTE_UNUSED;
3934 const char *name ATTRIBUTE_UNUSED;
3935 Elf_Internal_Sym *sym;
3936 asection *input_sec;
3938 /* If we see a common symbol, which implies a relocatable link, then
3939 if a symbol was small common in an input file, mark it as small
3940 common in the output file. */
3941 if (sym->st_shndx == SHN_COMMON
3942 && strcmp (input_sec->name, ".scommon") == 0)
3943 sym->st_shndx = SHN_MIPS_SCOMMON;
3945 if (sym->st_other == STO_MIPS16
3946 && (sym->st_value & 1) != 0)
3952 /* Functions for the dynamic linker. */
3954 /* Create dynamic sections when linking against a dynamic object. */
3957 _bfd_mips_elf_create_dynamic_sections (abfd, info)
3959 struct bfd_link_info *info;
3961 struct elf_link_hash_entry *h;
3962 struct bfd_link_hash_entry *bh;
3964 register asection *s;
3965 const char * const *namep;
3967 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3968 | SEC_LINKER_CREATED | SEC_READONLY);
3970 /* Mips ABI requests the .dynamic section to be read only. */
3971 s = bfd_get_section_by_name (abfd, ".dynamic");
3974 if (! bfd_set_section_flags (abfd, s, flags))
3978 /* We need to create .got section. */
3979 if (! mips_elf_create_got_section (abfd, info))
3982 /* Create the .msym section on IRIX6. It is used by the dynamic
3983 linker to speed up dynamic relocations, and to avoid computing
3984 the ELF hash for symbols. */
3985 if (IRIX_COMPAT (abfd) == ict_irix6
3986 && !mips_elf_create_msym_section (abfd))
3989 /* Create .stub section. */
3990 if (bfd_get_section_by_name (abfd,
3991 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
3993 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
3995 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
3996 || ! bfd_set_section_alignment (abfd, s,
3997 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
4001 if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
4003 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
4005 s = bfd_make_section (abfd, ".rld_map");
4007 || ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY)
4008 || ! bfd_set_section_alignment (abfd, s,
4009 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
4013 /* On IRIX5, we adjust add some additional symbols and change the
4014 alignments of several sections. There is no ABI documentation
4015 indicating that this is necessary on IRIX6, nor any evidence that
4016 the linker takes such action. */
4017 if (IRIX_COMPAT (abfd) == ict_irix5)
4019 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
4022 if (! (_bfd_generic_link_add_one_symbol
4023 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
4024 (bfd_vma) 0, (const char *) NULL, FALSE,
4025 get_elf_backend_data (abfd)->collect, &bh)))
4028 h = (struct elf_link_hash_entry *) bh;
4029 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4030 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4031 h->type = STT_SECTION;
4033 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4037 /* We need to create a .compact_rel section. */
4038 if (SGI_COMPAT (abfd))
4040 if (!mips_elf_create_compact_rel_section (abfd, info))
4044 /* Change alignments of some sections. */
4045 s = bfd_get_section_by_name (abfd, ".hash");
4047 bfd_set_section_alignment (abfd, s, 4);
4048 s = bfd_get_section_by_name (abfd, ".dynsym");
4050 bfd_set_section_alignment (abfd, s, 4);
4051 s = bfd_get_section_by_name (abfd, ".dynstr");
4053 bfd_set_section_alignment (abfd, s, 4);
4054 s = bfd_get_section_by_name (abfd, ".reginfo");
4056 bfd_set_section_alignment (abfd, s, 4);
4057 s = bfd_get_section_by_name (abfd, ".dynamic");
4059 bfd_set_section_alignment (abfd, s, 4);
4066 name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING";
4068 if (!(_bfd_generic_link_add_one_symbol
4069 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr,
4070 (bfd_vma) 0, (const char *) NULL, FALSE,
4071 get_elf_backend_data (abfd)->collect, &bh)))
4074 h = (struct elf_link_hash_entry *) bh;
4075 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4076 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4077 h->type = STT_SECTION;
4079 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4082 if (! mips_elf_hash_table (info)->use_rld_obj_head)
4084 /* __rld_map is a four byte word located in the .data section
4085 and is filled in by the rtld to contain a pointer to
4086 the _r_debug structure. Its symbol value will be set in
4087 _bfd_mips_elf_finish_dynamic_symbol. */
4088 s = bfd_get_section_by_name (abfd, ".rld_map");
4089 BFD_ASSERT (s != NULL);
4091 name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP";
4093 if (!(_bfd_generic_link_add_one_symbol
4094 (info, abfd, name, BSF_GLOBAL, s,
4095 (bfd_vma) 0, (const char *) NULL, FALSE,
4096 get_elf_backend_data (abfd)->collect, &bh)))
4099 h = (struct elf_link_hash_entry *) bh;
4100 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4101 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4102 h->type = STT_OBJECT;
4104 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4112 /* Look through the relocs for a section during the first phase, and
4113 allocate space in the global offset table. */
4116 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
4118 struct bfd_link_info *info;
4120 const Elf_Internal_Rela *relocs;
4124 Elf_Internal_Shdr *symtab_hdr;
4125 struct elf_link_hash_entry **sym_hashes;
4126 struct mips_got_info *g;
4128 const Elf_Internal_Rela *rel;
4129 const Elf_Internal_Rela *rel_end;
4132 struct elf_backend_data *bed;
4134 if (info->relocateable)
4137 dynobj = elf_hash_table (info)->dynobj;
4138 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4139 sym_hashes = elf_sym_hashes (abfd);
4140 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
4142 /* Check for the mips16 stub sections. */
4144 name = bfd_get_section_name (abfd, sec);
4145 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
4147 unsigned long r_symndx;
4149 /* Look at the relocation information to figure out which symbol
4152 r_symndx = ELF_R_SYM (abfd, relocs->r_info);
4154 if (r_symndx < extsymoff
4155 || sym_hashes[r_symndx - extsymoff] == NULL)
4159 /* This stub is for a local symbol. This stub will only be
4160 needed if there is some relocation in this BFD, other
4161 than a 16 bit function call, which refers to this symbol. */
4162 for (o = abfd->sections; o != NULL; o = o->next)
4164 Elf_Internal_Rela *sec_relocs;
4165 const Elf_Internal_Rela *r, *rend;
4167 /* We can ignore stub sections when looking for relocs. */
4168 if ((o->flags & SEC_RELOC) == 0
4169 || o->reloc_count == 0
4170 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
4171 sizeof FN_STUB - 1) == 0
4172 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
4173 sizeof CALL_STUB - 1) == 0
4174 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
4175 sizeof CALL_FP_STUB - 1) == 0)
4178 sec_relocs = (MNAME(abfd,_bfd_elf,link_read_relocs)
4179 (abfd, o, (PTR) NULL,
4180 (Elf_Internal_Rela *) NULL,
4181 info->keep_memory));
4182 if (sec_relocs == NULL)
4185 rend = sec_relocs + o->reloc_count;
4186 for (r = sec_relocs; r < rend; r++)
4187 if (ELF_R_SYM (abfd, r->r_info) == r_symndx
4188 && ELF_R_TYPE (abfd, r->r_info) != R_MIPS16_26)
4191 if (elf_section_data (o)->relocs != sec_relocs)
4200 /* There is no non-call reloc for this stub, so we do
4201 not need it. Since this function is called before
4202 the linker maps input sections to output sections, we
4203 can easily discard it by setting the SEC_EXCLUDE
4205 sec->flags |= SEC_EXCLUDE;
4209 /* Record this stub in an array of local symbol stubs for
4211 if (elf_tdata (abfd)->local_stubs == NULL)
4213 unsigned long symcount;
4217 if (elf_bad_symtab (abfd))
4218 symcount = NUM_SHDR_ENTRIES (symtab_hdr);
4220 symcount = symtab_hdr->sh_info;
4221 amt = symcount * sizeof (asection *);
4222 n = (asection **) bfd_zalloc (abfd, amt);
4225 elf_tdata (abfd)->local_stubs = n;
4228 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
4230 /* We don't need to set mips16_stubs_seen in this case.
4231 That flag is used to see whether we need to look through
4232 the global symbol table for stubs. We don't need to set
4233 it here, because we just have a local stub. */
4237 struct mips_elf_link_hash_entry *h;
4239 h = ((struct mips_elf_link_hash_entry *)
4240 sym_hashes[r_symndx - extsymoff]);
4242 /* H is the symbol this stub is for. */
4245 mips_elf_hash_table (info)->mips16_stubs_seen = TRUE;
4248 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
4249 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
4251 unsigned long r_symndx;
4252 struct mips_elf_link_hash_entry *h;
4255 /* Look at the relocation information to figure out which symbol
4258 r_symndx = ELF_R_SYM (abfd, relocs->r_info);
4260 if (r_symndx < extsymoff
4261 || sym_hashes[r_symndx - extsymoff] == NULL)
4263 /* This stub was actually built for a static symbol defined
4264 in the same file. We assume that all static symbols in
4265 mips16 code are themselves mips16, so we can simply
4266 discard this stub. Since this function is called before
4267 the linker maps input sections to output sections, we can
4268 easily discard it by setting the SEC_EXCLUDE flag. */
4269 sec->flags |= SEC_EXCLUDE;
4273 h = ((struct mips_elf_link_hash_entry *)
4274 sym_hashes[r_symndx - extsymoff]);
4276 /* H is the symbol this stub is for. */
4278 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
4279 loc = &h->call_fp_stub;
4281 loc = &h->call_stub;
4283 /* If we already have an appropriate stub for this function, we
4284 don't need another one, so we can discard this one. Since
4285 this function is called before the linker maps input sections
4286 to output sections, we can easily discard it by setting the
4287 SEC_EXCLUDE flag. We can also discard this section if we
4288 happen to already know that this is a mips16 function; it is
4289 not necessary to check this here, as it is checked later, but
4290 it is slightly faster to check now. */
4291 if (*loc != NULL || h->root.other == STO_MIPS16)
4293 sec->flags |= SEC_EXCLUDE;
4298 mips_elf_hash_table (info)->mips16_stubs_seen = TRUE;
4308 sgot = mips_elf_got_section (dynobj);
4313 BFD_ASSERT (elf_section_data (sgot) != NULL);
4314 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
4315 BFD_ASSERT (g != NULL);
4320 bed = get_elf_backend_data (abfd);
4321 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
4322 for (rel = relocs; rel < rel_end; ++rel)
4324 unsigned long r_symndx;
4325 unsigned int r_type;
4326 struct elf_link_hash_entry *h;
4328 r_symndx = ELF_R_SYM (abfd, rel->r_info);
4329 r_type = ELF_R_TYPE (abfd, rel->r_info);
4331 if (r_symndx < extsymoff)
4333 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
4335 (*_bfd_error_handler)
4336 (_("%s: Malformed reloc detected for section %s"),
4337 bfd_archive_filename (abfd), name);
4338 bfd_set_error (bfd_error_bad_value);
4343 h = sym_hashes[r_symndx - extsymoff];
4345 /* This may be an indirect symbol created because of a version. */
4348 while (h->root.type == bfd_link_hash_indirect)
4349 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4353 /* Some relocs require a global offset table. */
4354 if (dynobj == NULL || sgot == NULL)
4360 case R_MIPS_CALL_HI16:
4361 case R_MIPS_CALL_LO16:
4362 case R_MIPS_GOT_HI16:
4363 case R_MIPS_GOT_LO16:
4364 case R_MIPS_GOT_PAGE:
4365 case R_MIPS_GOT_OFST:
4366 case R_MIPS_GOT_DISP:
4368 elf_hash_table (info)->dynobj = dynobj = abfd;
4369 if (! mips_elf_create_got_section (dynobj, info))
4371 g = mips_elf_got_info (dynobj, &sgot);
4378 && (info->shared || h != NULL)
4379 && (sec->flags & SEC_ALLOC) != 0)
4380 elf_hash_table (info)->dynobj = dynobj = abfd;
4388 if (!h && (r_type == R_MIPS_CALL_LO16
4389 || r_type == R_MIPS_GOT_LO16
4390 || r_type == R_MIPS_GOT_DISP))
4392 struct mips_got_entry entry, **loc;
4394 /* We may need a local GOT entry for this relocation. We
4395 don't count R_MIPS_GOT_PAGE because we can estimate the
4396 maximum number of pages needed by looking at the size of
4397 the segment. Similar comments apply to R_MIPS_GOT16 and
4398 R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
4399 R_MIPS_CALL_HI16 because these are always followed by an
4400 R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */
4403 entry.symndx = r_symndx;
4404 entry.addend = rel->r_addend;
4405 loc = (struct mips_got_entry **)
4406 htab_find_slot (g->got_entries, &entry, INSERT);
4410 entry.gotidx = g->local_gotno++;
4412 *loc = (struct mips_got_entry *)bfd_alloc (abfd, sizeof entry);
4417 memcpy (*loc, &entry, sizeof entry);
4419 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
4428 (*_bfd_error_handler)
4429 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
4430 bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
4431 bfd_set_error (bfd_error_bad_value);
4436 case R_MIPS_CALL_HI16:
4437 case R_MIPS_CALL_LO16:
4440 /* This symbol requires a global offset table entry. */
4441 if (! mips_elf_record_global_got_symbol (h, info, g))
4444 /* We need a stub, not a plt entry for the undefined
4445 function. But we record it as if it needs plt. See
4446 elf_adjust_dynamic_symbol in elflink.h. */
4447 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4453 case R_MIPS_GOT_HI16:
4454 case R_MIPS_GOT_LO16:
4455 case R_MIPS_GOT_DISP:
4456 /* This symbol requires a global offset table entry. */
4457 if (h && ! mips_elf_record_global_got_symbol (h, info, g))
4464 if ((info->shared || h != NULL)
4465 && (sec->flags & SEC_ALLOC) != 0)
4469 const char *dname = ".rel.dyn";
4471 sreloc = bfd_get_section_by_name (dynobj, dname);
4474 sreloc = bfd_make_section (dynobj, dname);
4476 || ! bfd_set_section_flags (dynobj, sreloc,
4481 | SEC_LINKER_CREATED
4483 || ! bfd_set_section_alignment (dynobj, sreloc,
4488 #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
4491 /* When creating a shared object, we must copy these
4492 reloc types into the output file as R_MIPS_REL32
4493 relocs. We make room for this reloc in the
4494 .rel.dyn reloc section. */
4495 mips_elf_allocate_dynamic_relocations (dynobj, 1);
4496 if ((sec->flags & MIPS_READONLY_SECTION)
4497 == MIPS_READONLY_SECTION)
4498 /* We tell the dynamic linker that there are
4499 relocations against the text segment. */
4500 info->flags |= DF_TEXTREL;
4504 struct mips_elf_link_hash_entry *hmips;
4506 /* We only need to copy this reloc if the symbol is
4507 defined in a dynamic object. */
4508 hmips = (struct mips_elf_link_hash_entry *) h;
4509 ++hmips->possibly_dynamic_relocs;
4510 if ((sec->flags & MIPS_READONLY_SECTION)
4511 == MIPS_READONLY_SECTION)
4512 /* We need it to tell the dynamic linker if there
4513 are relocations against the text segment. */
4514 hmips->readonly_reloc = TRUE;
4517 /* Even though we don't directly need a GOT entry for
4518 this symbol, a symbol must have a dynamic symbol
4519 table index greater that DT_MIPS_GOTSYM if there are
4520 dynamic relocations against it. */
4522 && ! mips_elf_record_global_got_symbol (h, info, g))
4526 if (SGI_COMPAT (abfd))
4527 mips_elf_hash_table (info)->compact_rel_size +=
4528 sizeof (Elf32_External_crinfo);
4532 case R_MIPS_GPREL16:
4533 case R_MIPS_LITERAL:
4534 case R_MIPS_GPREL32:
4535 if (SGI_COMPAT (abfd))
4536 mips_elf_hash_table (info)->compact_rel_size +=
4537 sizeof (Elf32_External_crinfo);
4540 /* This relocation describes the C++ object vtable hierarchy.
4541 Reconstruct it for later use during GC. */
4542 case R_MIPS_GNU_VTINHERIT:
4543 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4547 /* This relocation describes which C++ vtable entries are actually
4548 used. Record for later use during GC. */
4549 case R_MIPS_GNU_VTENTRY:
4550 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4558 /* We must not create a stub for a symbol that has relocations
4559 related to taking the function's address. */
4565 struct mips_elf_link_hash_entry *mh;
4567 mh = (struct mips_elf_link_hash_entry *) h;
4568 mh->no_fn_stub = TRUE;
4572 case R_MIPS_CALL_HI16:
4573 case R_MIPS_CALL_LO16:
4577 /* If this reloc is not a 16 bit call, and it has a global
4578 symbol, then we will need the fn_stub if there is one.
4579 References from a stub section do not count. */
4581 && r_type != R_MIPS16_26
4582 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
4583 sizeof FN_STUB - 1) != 0
4584 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
4585 sizeof CALL_STUB - 1) != 0
4586 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
4587 sizeof CALL_FP_STUB - 1) != 0)
4589 struct mips_elf_link_hash_entry *mh;
4591 mh = (struct mips_elf_link_hash_entry *) h;
4592 mh->need_fn_stub = TRUE;
4599 /* Adjust a symbol defined by a dynamic object and referenced by a
4600 regular object. The current definition is in some section of the
4601 dynamic object, but we're not including those sections. We have to
4602 change the definition to something the rest of the link can
4606 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
4607 struct bfd_link_info *info;
4608 struct elf_link_hash_entry *h;
4611 struct mips_elf_link_hash_entry *hmips;
4614 dynobj = elf_hash_table (info)->dynobj;
4616 /* Make sure we know what is going on here. */
4617 BFD_ASSERT (dynobj != NULL
4618 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4619 || h->weakdef != NULL
4620 || ((h->elf_link_hash_flags
4621 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4622 && (h->elf_link_hash_flags
4623 & ELF_LINK_HASH_REF_REGULAR) != 0
4624 && (h->elf_link_hash_flags
4625 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4627 /* If this symbol is defined in a dynamic object, we need to copy
4628 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
4630 hmips = (struct mips_elf_link_hash_entry *) h;
4631 if (! info->relocateable
4632 && hmips->possibly_dynamic_relocs != 0
4633 && (h->root.type == bfd_link_hash_defweak
4634 || (h->elf_link_hash_flags
4635 & ELF_LINK_HASH_DEF_REGULAR) == 0))
4637 mips_elf_allocate_dynamic_relocations (dynobj,
4638 hmips->possibly_dynamic_relocs);
4639 if (hmips->readonly_reloc)
4640 /* We tell the dynamic linker that there are relocations
4641 against the text segment. */
4642 info->flags |= DF_TEXTREL;
4645 /* For a function, create a stub, if allowed. */
4646 if (! hmips->no_fn_stub
4647 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4649 if (! elf_hash_table (info)->dynamic_sections_created)
4652 /* If this symbol is not defined in a regular file, then set
4653 the symbol to the stub location. This is required to make
4654 function pointers compare as equal between the normal
4655 executable and the shared library. */
4656 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4658 /* We need .stub section. */
4659 s = bfd_get_section_by_name (dynobj,
4660 MIPS_ELF_STUB_SECTION_NAME (dynobj));
4661 BFD_ASSERT (s != NULL);
4663 h->root.u.def.section = s;
4664 h->root.u.def.value = s->_raw_size;
4666 /* XXX Write this stub address somewhere. */
4667 h->plt.offset = s->_raw_size;
4669 /* Make room for this stub code. */
4670 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
4672 /* The last half word of the stub will be filled with the index
4673 of this symbol in .dynsym section. */
4677 else if ((h->type == STT_FUNC)
4678 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
4680 /* This will set the entry for this symbol in the GOT to 0, and
4681 the dynamic linker will take care of this. */
4682 h->root.u.def.value = 0;
4686 /* If this is a weak symbol, and there is a real definition, the
4687 processor independent code will have arranged for us to see the
4688 real definition first, and we can just use the same value. */
4689 if (h->weakdef != NULL)
4691 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4692 || h->weakdef->root.type == bfd_link_hash_defweak);
4693 h->root.u.def.section = h->weakdef->root.u.def.section;
4694 h->root.u.def.value = h->weakdef->root.u.def.value;
4698 /* This is a reference to a symbol defined by a dynamic object which
4699 is not a function. */
4704 /* This function is called after all the input files have been read,
4705 and the input sections have been assigned to output sections. We
4706 check for any mips16 stub sections that we can discard. */
4709 _bfd_mips_elf_always_size_sections (output_bfd, info)
4711 struct bfd_link_info *info;
4715 /* The .reginfo section has a fixed size. */
4716 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
4718 bfd_set_section_size (output_bfd, ri,
4719 (bfd_size_type) sizeof (Elf32_External_RegInfo));
4721 if (info->relocateable
4722 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
4725 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
4726 mips_elf_check_mips16_stubs,
4732 /* Set the sizes of the dynamic sections. */
4735 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
4737 struct bfd_link_info *info;
4741 bfd_boolean reltext;
4742 struct mips_got_info *g = NULL;
4744 dynobj = elf_hash_table (info)->dynobj;
4745 BFD_ASSERT (dynobj != NULL);
4747 if (elf_hash_table (info)->dynamic_sections_created)
4749 /* Set the contents of the .interp section to the interpreter. */
4752 s = bfd_get_section_by_name (dynobj, ".interp");
4753 BFD_ASSERT (s != NULL);
4755 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
4757 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
4761 /* The check_relocs and adjust_dynamic_symbol entry points have
4762 determined the sizes of the various dynamic sections. Allocate
4765 for (s = dynobj->sections; s != NULL; s = s->next)
4770 /* It's OK to base decisions on the section name, because none
4771 of the dynobj section names depend upon the input files. */
4772 name = bfd_get_section_name (dynobj, s);
4774 if ((s->flags & SEC_LINKER_CREATED) == 0)
4779 if (strncmp (name, ".rel", 4) == 0)
4781 if (s->_raw_size == 0)
4783 /* We only strip the section if the output section name
4784 has the same name. Otherwise, there might be several
4785 input sections for this output section. FIXME: This
4786 code is probably not needed these days anyhow, since
4787 the linker now does not create empty output sections. */
4788 if (s->output_section != NULL
4790 bfd_get_section_name (s->output_section->owner,
4791 s->output_section)) == 0)
4796 const char *outname;
4799 /* If this relocation section applies to a read only
4800 section, then we probably need a DT_TEXTREL entry.
4801 If the relocation section is .rel.dyn, we always
4802 assert a DT_TEXTREL entry rather than testing whether
4803 there exists a relocation to a read only section or
4805 outname = bfd_get_section_name (output_bfd,
4807 target = bfd_get_section_by_name (output_bfd, outname + 4);
4809 && (target->flags & SEC_READONLY) != 0
4810 && (target->flags & SEC_ALLOC) != 0)
4811 || strcmp (outname, ".rel.dyn") == 0)
4814 /* We use the reloc_count field as a counter if we need
4815 to copy relocs into the output file. */
4816 if (strcmp (name, ".rel.dyn") != 0)
4820 else if (strncmp (name, ".got", 4) == 0)
4823 bfd_size_type loadable_size = 0;
4824 bfd_size_type local_gotno;
4827 BFD_ASSERT (elf_section_data (s) != NULL);
4828 g = (struct mips_got_info *) elf_section_data (s)->tdata;
4829 BFD_ASSERT (g != NULL);
4831 /* Calculate the total loadable size of the output. That
4832 will give us the maximum number of GOT_PAGE entries
4834 for (sub = info->input_bfds; sub; sub = sub->link_next)
4836 asection *subsection;
4838 for (subsection = sub->sections;
4840 subsection = subsection->next)
4842 if ((subsection->flags & SEC_ALLOC) == 0)
4844 loadable_size += ((subsection->_raw_size + 0xf)
4845 &~ (bfd_size_type) 0xf);
4848 loadable_size += MIPS_FUNCTION_STUB_SIZE;
4850 /* Assume there are two loadable segments consisting of
4851 contiguous sections. Is 5 enough? */
4852 local_gotno = (loadable_size >> 16) + 5;
4854 g->local_gotno += local_gotno;
4855 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
4857 /* There has to be a global GOT entry for every symbol with
4858 a dynamic symbol table index of DT_MIPS_GOTSYM or
4859 higher. Therefore, it make sense to put those symbols
4860 that need GOT entries at the end of the symbol table. We
4862 if (! mips_elf_sort_hash_table (info, 1))
4865 if (g->global_gotsym != NULL)
4866 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
4868 /* If there are no global symbols, or none requiring
4869 relocations, then GLOBAL_GOTSYM will be NULL. */
4871 g->global_gotno = i;
4872 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
4874 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
4876 /* IRIX rld assumes that the function stub isn't at the end
4877 of .text section. So put a dummy. XXX */
4878 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
4880 else if (! info->shared
4881 && ! mips_elf_hash_table (info)->use_rld_obj_head
4882 && strncmp (name, ".rld_map", 8) == 0)
4884 /* We add a room for __rld_map. It will be filled in by the
4885 rtld to contain a pointer to the _r_debug structure. */
4888 else if (SGI_COMPAT (output_bfd)
4889 && strncmp (name, ".compact_rel", 12) == 0)
4890 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
4891 else if (strcmp (name, ".msym") == 0)
4892 s->_raw_size = (sizeof (Elf32_External_Msym)
4893 * (elf_hash_table (info)->dynsymcount
4894 + bfd_count_sections (output_bfd)));
4895 else if (strncmp (name, ".init", 5) != 0)
4897 /* It's not one of our sections, so don't allocate space. */
4903 _bfd_strip_section_from_output (info, s);
4907 /* Allocate memory for the section contents. */
4908 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4909 if (s->contents == NULL && s->_raw_size != 0)
4911 bfd_set_error (bfd_error_no_memory);
4916 if (elf_hash_table (info)->dynamic_sections_created)
4918 /* Add some entries to the .dynamic section. We fill in the
4919 values later, in _bfd_mips_elf_finish_dynamic_sections, but we
4920 must add the entries now so that we get the correct size for
4921 the .dynamic section. The DT_DEBUG entry is filled in by the
4922 dynamic linker and used by the debugger. */
4925 /* SGI object has the equivalence of DT_DEBUG in the
4926 DT_MIPS_RLD_MAP entry. */
4927 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
4929 if (!SGI_COMPAT (output_bfd))
4931 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
4937 /* Shared libraries on traditional mips have DT_DEBUG. */
4938 if (!SGI_COMPAT (output_bfd))
4940 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
4945 if (reltext && SGI_COMPAT (output_bfd))
4946 info->flags |= DF_TEXTREL;
4948 if ((info->flags & DF_TEXTREL) != 0)
4950 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
4954 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
4957 if (bfd_get_section_by_name (dynobj, ".rel.dyn"))
4959 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
4962 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
4965 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
4969 if (SGI_COMPAT (output_bfd))
4971 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
4975 if (SGI_COMPAT (output_bfd))
4977 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
4981 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
4983 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
4986 s = bfd_get_section_by_name (dynobj, ".liblist");
4987 BFD_ASSERT (s != NULL);
4989 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
4993 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
4996 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
5000 /* Time stamps in executable files are a bad idea. */
5001 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
5006 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
5011 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
5015 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
5018 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
5021 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
5024 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
5027 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
5030 if (IRIX_COMPAT (dynobj) == ict_irix5
5031 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
5034 if (IRIX_COMPAT (dynobj) == ict_irix6
5035 && (bfd_get_section_by_name
5036 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
5037 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
5040 if (bfd_get_section_by_name (dynobj, ".msym")
5041 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
5048 /* Relocate a MIPS ELF section. */
5051 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5052 contents, relocs, local_syms, local_sections)
5054 struct bfd_link_info *info;
5056 asection *input_section;
5058 Elf_Internal_Rela *relocs;
5059 Elf_Internal_Sym *local_syms;
5060 asection **local_sections;
5062 Elf_Internal_Rela *rel;
5063 const Elf_Internal_Rela *relend;
5065 bfd_boolean use_saved_addend_p = FALSE;
5066 struct elf_backend_data *bed;
5068 bed = get_elf_backend_data (output_bfd);
5069 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
5070 for (rel = relocs; rel < relend; ++rel)
5074 reloc_howto_type *howto;
5075 bfd_boolean require_jalx;
5076 /* TRUE if the relocation is a RELA relocation, rather than a
5078 bfd_boolean rela_relocation_p = TRUE;
5079 unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info);
5080 const char * msg = (const char *) NULL;
5082 /* Find the relocation howto for this relocation. */
5083 if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd))
5085 /* Some 32-bit code uses R_MIPS_64. In particular, people use
5086 64-bit code, but make sure all their addresses are in the
5087 lowermost or uppermost 32-bit section of the 64-bit address
5088 space. Thus, when they use an R_MIPS_64 they mean what is
5089 usually meant by R_MIPS_32, with the exception that the
5090 stored value is sign-extended to 64 bits. */
5091 howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, FALSE);
5093 /* On big-endian systems, we need to lie about the position
5095 if (bfd_big_endian (input_bfd))
5099 /* NewABI defaults to RELA relocations. */
5100 howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type,
5101 NEWABI_P (input_bfd)
5102 && (MIPS_RELOC_RELA_P
5103 (input_bfd, input_section,
5106 if (!use_saved_addend_p)
5108 Elf_Internal_Shdr *rel_hdr;
5110 /* If these relocations were originally of the REL variety,
5111 we must pull the addend out of the field that will be
5112 relocated. Otherwise, we simply use the contents of the
5113 RELA relocation. To determine which flavor or relocation
5114 this is, we depend on the fact that the INPUT_SECTION's
5115 REL_HDR is read before its REL_HDR2. */
5116 rel_hdr = &elf_section_data (input_section)->rel_hdr;
5117 if ((size_t) (rel - relocs)
5118 >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
5119 rel_hdr = elf_section_data (input_section)->rel_hdr2;
5120 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
5122 /* Note that this is a REL relocation. */
5123 rela_relocation_p = FALSE;
5125 /* Get the addend, which is stored in the input file. */
5126 addend = mips_elf_obtain_contents (howto, rel, input_bfd,
5128 addend &= howto->src_mask;
5129 addend <<= howto->rightshift;
5131 /* For some kinds of relocations, the ADDEND is a
5132 combination of the addend stored in two different
5134 if (r_type == R_MIPS_HI16
5135 || r_type == R_MIPS_GNU_REL_HI16
5136 || (r_type == R_MIPS_GOT16
5137 && mips_elf_local_relocation_p (input_bfd, rel,
5138 local_sections, FALSE)))
5141 const Elf_Internal_Rela *lo16_relocation;
5142 reloc_howto_type *lo16_howto;
5145 /* The combined value is the sum of the HI16 addend,
5146 left-shifted by sixteen bits, and the LO16
5147 addend, sign extended. (Usually, the code does
5148 a `lui' of the HI16 value, and then an `addiu' of
5151 Scan ahead to find a matching LO16 relocation. */
5152 if (r_type == R_MIPS_GNU_REL_HI16)
5153 lo = R_MIPS_GNU_REL_LO16;
5156 lo16_relocation = mips_elf_next_relocation (input_bfd, lo,
5158 if (lo16_relocation == NULL)
5161 /* Obtain the addend kept there. */
5162 lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, lo, FALSE);
5163 l = mips_elf_obtain_contents (lo16_howto, lo16_relocation,
5164 input_bfd, contents);
5165 l &= lo16_howto->src_mask;
5166 l <<= lo16_howto->rightshift;
5167 l = mips_elf_sign_extend (l, 16);
5171 /* Compute the combined addend. */
5174 /* If PC-relative, subtract the difference between the
5175 address of the LO part of the reloc and the address of
5176 the HI part. The relocation is relative to the LO
5177 part, but mips_elf_calculate_relocation() doesn't
5178 know its address or the difference from the HI part, so
5179 we subtract that difference here. See also the
5180 comment in mips_elf_calculate_relocation(). */
5181 if (r_type == R_MIPS_GNU_REL_HI16)
5182 addend -= (lo16_relocation->r_offset - rel->r_offset);
5184 else if (r_type == R_MIPS16_GPREL)
5186 /* The addend is scrambled in the object file. See
5187 mips_elf_perform_relocation for details on the
5189 addend = (((addend & 0x1f0000) >> 5)
5190 | ((addend & 0x7e00000) >> 16)
5195 addend = rel->r_addend;
5198 if (info->relocateable)
5200 Elf_Internal_Sym *sym;
5201 unsigned long r_symndx;
5203 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)
5204 && bfd_big_endian (input_bfd))
5207 /* Since we're just relocating, all we need to do is copy
5208 the relocations back out to the object file, unless
5209 they're against a section symbol, in which case we need
5210 to adjust by the section offset, or unless they're GP
5211 relative in which case we need to adjust by the amount
5212 that we're adjusting GP in this relocateable object. */
5214 if (! mips_elf_local_relocation_p (input_bfd, rel, local_sections,
5216 /* There's nothing to do for non-local relocations. */
5219 if (r_type == R_MIPS16_GPREL
5220 || r_type == R_MIPS_GPREL16
5221 || r_type == R_MIPS_GPREL32
5222 || r_type == R_MIPS_LITERAL)
5223 addend -= (_bfd_get_gp_value (output_bfd)
5224 - _bfd_get_gp_value (input_bfd));
5226 r_symndx = ELF_R_SYM (output_bfd, rel->r_info);
5227 sym = local_syms + r_symndx;
5228 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5229 /* Adjust the addend appropriately. */
5230 addend += local_sections[r_symndx]->output_offset;
5232 if (howto->partial_inplace)
5234 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
5235 then we only want to write out the high-order 16 bits.
5236 The subsequent R_MIPS_LO16 will handle the low-order bits.
5238 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
5239 || r_type == R_MIPS_GNU_REL_HI16)
5240 addend = mips_elf_high (addend);
5241 else if (r_type == R_MIPS_HIGHER)
5242 addend = mips_elf_higher (addend);
5243 else if (r_type == R_MIPS_HIGHEST)
5244 addend = mips_elf_highest (addend);
5247 if (rela_relocation_p)
5248 /* If this is a RELA relocation, just update the addend.
5249 We have to cast away constness for REL. */
5250 rel->r_addend = addend;
5253 /* Otherwise, we have to write the value back out. Note
5254 that we use the source mask, rather than the
5255 destination mask because the place to which we are
5256 writing will be source of the addend in the final
5258 addend >>= howto->rightshift;
5259 addend &= howto->src_mask;
5261 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd))
5262 /* See the comment above about using R_MIPS_64 in the 32-bit
5263 ABI. Here, we need to update the addend. It would be
5264 possible to get away with just using the R_MIPS_32 reloc
5265 but for endianness. */
5271 if (addend & ((bfd_vma) 1 << 31))
5273 sign_bits = ((bfd_vma) 1 << 32) - 1;
5280 /* If we don't know that we have a 64-bit type,
5281 do two separate stores. */
5282 if (bfd_big_endian (input_bfd))
5284 /* Store the sign-bits (which are most significant)
5286 low_bits = sign_bits;
5292 high_bits = sign_bits;
5294 bfd_put_32 (input_bfd, low_bits,
5295 contents + rel->r_offset);
5296 bfd_put_32 (input_bfd, high_bits,
5297 contents + rel->r_offset + 4);
5301 if (! mips_elf_perform_relocation (info, howto, rel, addend,
5302 input_bfd, input_section,
5307 /* Go on to the next relocation. */
5311 /* In the N32 and 64-bit ABIs there may be multiple consecutive
5312 relocations for the same offset. In that case we are
5313 supposed to treat the output of each relocation as the addend
5315 if (rel + 1 < relend
5316 && rel->r_offset == rel[1].r_offset
5317 && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE)
5318 use_saved_addend_p = TRUE;
5320 use_saved_addend_p = FALSE;
5322 addend >>= howto->rightshift;
5324 /* Figure out what value we are supposed to relocate. */
5325 switch (mips_elf_calculate_relocation (output_bfd, input_bfd,
5326 input_section, info, rel,
5327 addend, howto, local_syms,
5328 local_sections, &value,
5329 &name, &require_jalx,
5330 use_saved_addend_p))
5332 case bfd_reloc_continue:
5333 /* There's nothing to do. */
5336 case bfd_reloc_undefined:
5337 /* mips_elf_calculate_relocation already called the
5338 undefined_symbol callback. There's no real point in
5339 trying to perform the relocation at this point, so we
5340 just skip ahead to the next relocation. */
5343 case bfd_reloc_notsupported:
5344 msg = _("internal error: unsupported relocation error");
5345 info->callbacks->warning
5346 (info, msg, name, input_bfd, input_section, rel->r_offset);
5349 case bfd_reloc_overflow:
5350 if (use_saved_addend_p)
5351 /* Ignore overflow until we reach the last relocation for
5352 a given location. */
5356 BFD_ASSERT (name != NULL);
5357 if (! ((*info->callbacks->reloc_overflow)
5358 (info, name, howto->name, (bfd_vma) 0,
5359 input_bfd, input_section, rel->r_offset)))
5372 /* If we've got another relocation for the address, keep going
5373 until we reach the last one. */
5374 if (use_saved_addend_p)
5380 if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd))
5381 /* See the comment above about using R_MIPS_64 in the 32-bit
5382 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
5383 that calculated the right value. Now, however, we
5384 sign-extend the 32-bit result to 64-bits, and store it as a
5385 64-bit value. We are especially generous here in that we
5386 go to extreme lengths to support this usage on systems with
5387 only a 32-bit VMA. */
5393 if (value & ((bfd_vma) 1 << 31))
5395 sign_bits = ((bfd_vma) 1 << 32) - 1;
5402 /* If we don't know that we have a 64-bit type,
5403 do two separate stores. */
5404 if (bfd_big_endian (input_bfd))
5406 /* Undo what we did above. */
5408 /* Store the sign-bits (which are most significant)
5410 low_bits = sign_bits;
5416 high_bits = sign_bits;
5418 bfd_put_32 (input_bfd, low_bits,
5419 contents + rel->r_offset);
5420 bfd_put_32 (input_bfd, high_bits,
5421 contents + rel->r_offset + 4);
5425 /* Actually perform the relocation. */
5426 if (! mips_elf_perform_relocation (info, howto, rel, value,
5427 input_bfd, input_section,
5428 contents, require_jalx))
5435 /* If NAME is one of the special IRIX6 symbols defined by the linker,
5436 adjust it appropriately now. */
5439 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
5440 bfd *abfd ATTRIBUTE_UNUSED;
5442 Elf_Internal_Sym *sym;
5444 /* The linker script takes care of providing names and values for
5445 these, but we must place them into the right sections. */
5446 static const char* const text_section_symbols[] = {
5449 "__dso_displacement",
5451 "__program_header_table",
5455 static const char* const data_section_symbols[] = {
5463 const char* const *p;
5466 for (i = 0; i < 2; ++i)
5467 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
5470 if (strcmp (*p, name) == 0)
5472 /* All of these symbols are given type STT_SECTION by the
5474 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5476 /* The IRIX linker puts these symbols in special sections. */
5478 sym->st_shndx = SHN_MIPS_TEXT;
5480 sym->st_shndx = SHN_MIPS_DATA;
5486 /* Finish up dynamic symbol handling. We set the contents of various
5487 dynamic sections here. */
5490 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
5492 struct bfd_link_info *info;
5493 struct elf_link_hash_entry *h;
5494 Elf_Internal_Sym *sym;
5500 struct mips_got_info *g;
5502 struct mips_elf_link_hash_entry *mh;
5504 dynobj = elf_hash_table (info)->dynobj;
5505 gval = sym->st_value;
5506 mh = (struct mips_elf_link_hash_entry *) h;
5508 if (h->plt.offset != (bfd_vma) -1)
5511 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
5513 /* This symbol has a stub. Set it up. */
5515 BFD_ASSERT (h->dynindx != -1);
5517 s = bfd_get_section_by_name (dynobj,
5518 MIPS_ELF_STUB_SECTION_NAME (dynobj));
5519 BFD_ASSERT (s != NULL);
5521 /* FIXME: Can h->dynindex be more than 64K? */
5522 if (h->dynindx & 0xffff0000)
5525 /* Fill the stub. */
5526 bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub);
5527 bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + 4);
5528 bfd_put_32 (output_bfd, STUB_JALR, stub + 8);
5529 bfd_put_32 (output_bfd, STUB_LI16 (output_bfd) + h->dynindx, stub + 12);
5531 BFD_ASSERT (h->plt.offset <= s->_raw_size);
5532 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
5534 /* Mark the symbol as undefined. plt.offset != -1 occurs
5535 only for the referenced symbol. */
5536 sym->st_shndx = SHN_UNDEF;
5538 /* The run-time linker uses the st_value field of the symbol
5539 to reset the global offset table entry for this external
5540 to its stub address when unlinking a shared object. */
5541 gval = s->output_section->vma + s->output_offset + h->plt.offset;
5542 sym->st_value = gval;
5545 BFD_ASSERT (h->dynindx != -1
5546 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
5548 sgot = mips_elf_got_section (dynobj);
5549 BFD_ASSERT (sgot != NULL);
5550 BFD_ASSERT (elf_section_data (sgot) != NULL);
5551 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5552 BFD_ASSERT (g != NULL);
5554 /* Run through the global symbol table, creating GOT entries for all
5555 the symbols that need them. */
5556 if (g->global_gotsym != NULL
5557 && h->dynindx >= g->global_gotsym->dynindx)
5563 value = sym->st_value;
5566 /* For an entity defined in a shared object, this will be
5567 NULL. (For functions in shared objects for
5568 which we have created stubs, ST_VALUE will be non-NULL.
5569 That's because such the functions are now no longer defined
5570 in a shared object.) */
5572 if (info->shared && h->root.type == bfd_link_hash_undefined)
5575 value = h->root.u.def.value;
5577 offset = mips_elf_global_got_index (dynobj, h);
5578 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
5581 /* Create a .msym entry, if appropriate. */
5582 smsym = bfd_get_section_by_name (dynobj, ".msym");
5585 Elf32_Internal_Msym msym;
5587 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
5588 /* It is undocumented what the `1' indicates, but IRIX6 uses
5590 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
5591 bfd_mips_elf_swap_msym_out
5593 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
5596 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5597 name = h->root.root.string;
5598 if (strcmp (name, "_DYNAMIC") == 0
5599 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
5600 sym->st_shndx = SHN_ABS;
5601 else if (strcmp (name, "_DYNAMIC_LINK") == 0
5602 || strcmp (name, "_DYNAMIC_LINKING") == 0)
5604 sym->st_shndx = SHN_ABS;
5605 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5608 else if (strcmp (name, "_gp_disp") == 0 && ! NEWABI_P (output_bfd))
5610 sym->st_shndx = SHN_ABS;
5611 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5612 sym->st_value = elf_gp (output_bfd);
5614 else if (SGI_COMPAT (output_bfd))
5616 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
5617 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
5619 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5620 sym->st_other = STO_PROTECTED;
5622 sym->st_shndx = SHN_MIPS_DATA;
5624 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
5626 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5627 sym->st_other = STO_PROTECTED;
5628 sym->st_value = mips_elf_hash_table (info)->procedure_count;
5629 sym->st_shndx = SHN_ABS;
5631 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
5633 if (h->type == STT_FUNC)
5634 sym->st_shndx = SHN_MIPS_TEXT;
5635 else if (h->type == STT_OBJECT)
5636 sym->st_shndx = SHN_MIPS_DATA;
5640 /* Handle the IRIX6-specific symbols. */
5641 if (IRIX_COMPAT (output_bfd) == ict_irix6)
5642 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
5646 if (! mips_elf_hash_table (info)->use_rld_obj_head
5647 && (strcmp (name, "__rld_map") == 0
5648 || strcmp (name, "__RLD_MAP") == 0))
5650 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
5651 BFD_ASSERT (s != NULL);
5652 sym->st_value = s->output_section->vma + s->output_offset;
5653 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
5654 if (mips_elf_hash_table (info)->rld_value == 0)
5655 mips_elf_hash_table (info)->rld_value = sym->st_value;
5657 else if (mips_elf_hash_table (info)->use_rld_obj_head
5658 && strcmp (name, "__rld_obj_head") == 0)
5660 /* IRIX6 does not use a .rld_map section. */
5661 if (IRIX_COMPAT (output_bfd) == ict_irix5
5662 || IRIX_COMPAT (output_bfd) == ict_none)
5663 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
5665 mips_elf_hash_table (info)->rld_value = sym->st_value;
5669 /* If this is a mips16 symbol, force the value to be even. */
5670 if (sym->st_other == STO_MIPS16
5671 && (sym->st_value & 1) != 0)
5677 /* Finish up the dynamic sections. */
5680 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
5682 struct bfd_link_info *info;
5687 struct mips_got_info *g;
5689 dynobj = elf_hash_table (info)->dynobj;
5691 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5693 sgot = bfd_get_section_by_name (dynobj, ".got");
5698 BFD_ASSERT (elf_section_data (sgot) != NULL);
5699 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5700 BFD_ASSERT (g != NULL);
5703 if (elf_hash_table (info)->dynamic_sections_created)
5707 BFD_ASSERT (sdyn != NULL);
5708 BFD_ASSERT (g != NULL);
5710 for (b = sdyn->contents;
5711 b < sdyn->contents + sdyn->_raw_size;
5712 b += MIPS_ELF_DYN_SIZE (dynobj))
5714 Elf_Internal_Dyn dyn;
5718 bfd_boolean swap_out_p;
5720 /* Read in the current dynamic entry. */
5721 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
5723 /* Assume that we're going to modify it and write it out. */
5729 s = (bfd_get_section_by_name (dynobj, ".rel.dyn"));
5730 BFD_ASSERT (s != NULL);
5731 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
5735 /* Rewrite DT_STRSZ. */
5737 _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
5743 case DT_MIPS_CONFLICT:
5746 case DT_MIPS_LIBLIST:
5749 s = bfd_get_section_by_name (output_bfd, name);
5750 BFD_ASSERT (s != NULL);
5751 dyn.d_un.d_ptr = s->vma;
5754 case DT_MIPS_RLD_VERSION:
5755 dyn.d_un.d_val = 1; /* XXX */
5759 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
5762 case DT_MIPS_CONFLICTNO:
5764 elemsize = sizeof (Elf32_Conflict);
5767 case DT_MIPS_LIBLISTNO:
5769 elemsize = sizeof (Elf32_Lib);
5771 s = bfd_get_section_by_name (output_bfd, name);
5774 if (s->_cooked_size != 0)
5775 dyn.d_un.d_val = s->_cooked_size / elemsize;
5777 dyn.d_un.d_val = s->_raw_size / elemsize;
5783 case DT_MIPS_TIME_STAMP:
5784 time ((time_t *) &dyn.d_un.d_val);
5787 case DT_MIPS_ICHECKSUM:
5792 case DT_MIPS_IVERSION:
5797 case DT_MIPS_BASE_ADDRESS:
5798 s = output_bfd->sections;
5799 BFD_ASSERT (s != NULL);
5800 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
5803 case DT_MIPS_LOCAL_GOTNO:
5804 dyn.d_un.d_val = g->local_gotno;
5807 case DT_MIPS_UNREFEXTNO:
5808 /* The index into the dynamic symbol table which is the
5809 entry of the first external symbol that is not
5810 referenced within the same object. */
5811 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
5814 case DT_MIPS_GOTSYM:
5815 if (g->global_gotsym)
5817 dyn.d_un.d_val = g->global_gotsym->dynindx;
5820 /* In case if we don't have global got symbols we default
5821 to setting DT_MIPS_GOTSYM to the same value as
5822 DT_MIPS_SYMTABNO, so we just fall through. */
5824 case DT_MIPS_SYMTABNO:
5826 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
5827 s = bfd_get_section_by_name (output_bfd, name);
5828 BFD_ASSERT (s != NULL);
5830 if (s->_cooked_size != 0)
5831 dyn.d_un.d_val = s->_cooked_size / elemsize;
5833 dyn.d_un.d_val = s->_raw_size / elemsize;
5836 case DT_MIPS_HIPAGENO:
5837 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
5840 case DT_MIPS_RLD_MAP:
5841 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
5844 case DT_MIPS_OPTIONS:
5845 s = (bfd_get_section_by_name
5846 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
5847 dyn.d_un.d_ptr = s->vma;
5851 s = (bfd_get_section_by_name (output_bfd, ".msym"));
5852 dyn.d_un.d_ptr = s->vma;
5861 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
5866 /* The first entry of the global offset table will be filled at
5867 runtime. The second entry will be used by some runtime loaders.
5868 This isn't the case of IRIX rld. */
5869 if (sgot != NULL && sgot->_raw_size > 0)
5871 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
5872 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
5873 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
5877 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
5878 = MIPS_ELF_GOT_SIZE (output_bfd);
5883 Elf32_compact_rel cpt;
5885 /* ??? The section symbols for the output sections were set up in
5886 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
5887 symbols. Should we do so? */
5889 smsym = bfd_get_section_by_name (dynobj, ".msym");
5892 Elf32_Internal_Msym msym;
5894 msym.ms_hash_value = 0;
5895 msym.ms_info = ELF32_MS_INFO (0, 1);
5897 for (s = output_bfd->sections; s != NULL; s = s->next)
5899 long dynindx = elf_section_data (s)->dynindx;
5901 bfd_mips_elf_swap_msym_out
5903 (((Elf32_External_Msym *) smsym->contents)
5908 if (SGI_COMPAT (output_bfd))
5910 /* Write .compact_rel section out. */
5911 s = bfd_get_section_by_name (dynobj, ".compact_rel");
5915 cpt.num = s->reloc_count;
5917 cpt.offset = (s->output_section->filepos
5918 + sizeof (Elf32_External_compact_rel));
5921 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
5922 ((Elf32_External_compact_rel *)
5925 /* Clean up a dummy stub function entry in .text. */
5926 s = bfd_get_section_by_name (dynobj,
5927 MIPS_ELF_STUB_SECTION_NAME (dynobj));
5930 file_ptr dummy_offset;
5932 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
5933 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
5934 memset (s->contents + dummy_offset, 0,
5935 MIPS_FUNCTION_STUB_SIZE);
5940 /* We need to sort the entries of the dynamic relocation section. */
5942 if (!ABI_64_P (output_bfd))
5946 reldyn = bfd_get_section_by_name (dynobj, ".rel.dyn");
5947 if (reldyn != NULL && reldyn->reloc_count > 2)
5949 reldyn_sorting_bfd = output_bfd;
5950 qsort ((Elf32_External_Rel *) reldyn->contents + 1,
5951 (size_t) reldyn->reloc_count - 1,
5952 sizeof (Elf32_External_Rel), sort_dynamic_relocs);
5956 /* Clean up a first relocation in .rel.dyn. */
5957 s = bfd_get_section_by_name (dynobj, ".rel.dyn");
5958 if (s != NULL && s->_raw_size > 0)
5959 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
5965 /* The final processing done just before writing out a MIPS ELF object
5966 file. This gets the MIPS architecture right based on the machine
5967 number. This is used by both the 32-bit and the 64-bit ABI. */
5970 _bfd_mips_elf_final_write_processing (abfd, linker)
5972 bfd_boolean linker ATTRIBUTE_UNUSED;
5976 Elf_Internal_Shdr **hdrpp;
5980 switch (bfd_get_mach (abfd))
5983 case bfd_mach_mips3000:
5984 val = E_MIPS_ARCH_1;
5987 case bfd_mach_mips3900:
5988 val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
5991 case bfd_mach_mips6000:
5992 val = E_MIPS_ARCH_2;
5995 case bfd_mach_mips4000:
5996 case bfd_mach_mips4300:
5997 case bfd_mach_mips4400:
5998 case bfd_mach_mips4600:
5999 val = E_MIPS_ARCH_3;
6002 case bfd_mach_mips4010:
6003 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
6006 case bfd_mach_mips4100:
6007 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
6010 case bfd_mach_mips4111:
6011 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
6014 case bfd_mach_mips4120:
6015 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120;
6018 case bfd_mach_mips4650:
6019 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
6022 case bfd_mach_mips5400:
6023 val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400;
6026 case bfd_mach_mips5500:
6027 val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500;
6030 case bfd_mach_mips5000:
6031 case bfd_mach_mips8000:
6032 case bfd_mach_mips10000:
6033 case bfd_mach_mips12000:
6034 val = E_MIPS_ARCH_4;
6037 case bfd_mach_mips5:
6038 val = E_MIPS_ARCH_5;
6041 case bfd_mach_mips_sb1:
6042 val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1;
6045 case bfd_mach_mipsisa32:
6046 val = E_MIPS_ARCH_32;
6049 case bfd_mach_mipsisa64:
6050 val = E_MIPS_ARCH_64;
6053 elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
6054 elf_elfheader (abfd)->e_flags |= val;
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 /* Return TRUE if machine EXTENSION is an extension of machine BASE,
7725 meaning that it should be safe to link code for the two machines
7726 and set the output machine to EXTENSION. EXTENSION and BASE are
7727 both submasks of EF_MIPS_MACH. */
7730 _bfd_mips_elf_mach_extends_p (base, extension)
7731 flagword base, extension;
7733 /* The vr5500 ISA is an extension of the core vr5400 ISA, but doesn't
7734 include the multimedia stuff. It seems better to allow vr5400
7735 and vr5500 code to be merged anyway, since many libraries will
7736 just use the core ISA. Perhaps we could add some sort of ASE
7737 flag if this ever proves a problem. */
7739 || (base == E_MIPS_MACH_5400 && extension == E_MIPS_MACH_5500)
7740 || (base == E_MIPS_MACH_4100 && extension == E_MIPS_MACH_4111)
7741 || (base == E_MIPS_MACH_4100 && extension == E_MIPS_MACH_4120));
7744 /* Merge backend specific data from an object file to the output
7745 object file when linking. */
7748 _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
7755 bfd_boolean null_input_bfd = TRUE;
7758 /* Check if we have the same endianess */
7759 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
7762 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
7763 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
7766 new_flags = elf_elfheader (ibfd)->e_flags;
7767 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
7768 old_flags = elf_elfheader (obfd)->e_flags;
7770 if (! elf_flags_init (obfd))
7772 elf_flags_init (obfd) = TRUE;
7773 elf_elfheader (obfd)->e_flags = new_flags;
7774 elf_elfheader (obfd)->e_ident[EI_CLASS]
7775 = elf_elfheader (ibfd)->e_ident[EI_CLASS];
7777 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7778 && bfd_get_arch_info (obfd)->the_default)
7780 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
7781 bfd_get_mach (ibfd)))
7788 /* Check flag compatibility. */
7790 new_flags &= ~EF_MIPS_NOREORDER;
7791 old_flags &= ~EF_MIPS_NOREORDER;
7793 if (new_flags == old_flags)
7796 /* Check to see if the input BFD actually contains any sections.
7797 If not, its flags may not have been initialised either, but it cannot
7798 actually cause any incompatibility. */
7799 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7801 /* Ignore synthetic sections and empty .text, .data and .bss sections
7802 which are automatically generated by gas. */
7803 if (strcmp (sec->name, ".reginfo")
7804 && strcmp (sec->name, ".mdebug")
7805 && ((!strcmp (sec->name, ".text")
7806 || !strcmp (sec->name, ".data")
7807 || !strcmp (sec->name, ".bss"))
7808 && sec->_raw_size != 0))
7810 null_input_bfd = FALSE;
7819 if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
7821 new_flags &= ~EF_MIPS_PIC;
7822 old_flags &= ~EF_MIPS_PIC;
7823 (*_bfd_error_handler)
7824 (_("%s: linking PIC files with non-PIC files"),
7825 bfd_archive_filename (ibfd));
7829 if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
7831 new_flags &= ~EF_MIPS_CPIC;
7832 old_flags &= ~EF_MIPS_CPIC;
7833 (*_bfd_error_handler)
7834 (_("%s: linking abicalls files with non-abicalls files"),
7835 bfd_archive_filename (ibfd));
7839 /* Compare the ISA's. */
7840 if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
7841 != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
7843 int new_mach = new_flags & EF_MIPS_MACH;
7844 int old_mach = old_flags & EF_MIPS_MACH;
7845 int new_isa = elf_mips_isa (new_flags);
7846 int old_isa = elf_mips_isa (old_flags);
7848 /* If either has no machine specified, just compare the general isa's.
7849 Some combinations of machines are ok, if the isa's match. */
7850 if (new_mach == old_mach
7851 || _bfd_mips_elf_mach_extends_p (new_mach, old_mach)
7852 || _bfd_mips_elf_mach_extends_p (old_mach, new_mach))
7854 /* Don't warn about mixing code using 32-bit ISAs, or mixing code
7855 using 64-bit ISAs. They will normally use the same data sizes
7856 and calling conventions. */
7858 if (( (new_isa == 1 || new_isa == 2 || new_isa == 32)
7859 ^ (old_isa == 1 || old_isa == 2 || old_isa == 32)) != 0)
7861 (*_bfd_error_handler)
7862 (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
7863 bfd_archive_filename (ibfd), new_isa, old_isa);
7868 /* Do we need to update the mach field? */
7869 if (_bfd_mips_elf_mach_extends_p (old_mach, new_mach))
7871 elf_elfheader (obfd)->e_flags &= ~EF_MIPS_MACH;
7872 elf_elfheader (obfd)->e_flags |= new_mach;
7875 /* Do we need to update the ISA field? */
7876 if (new_isa > old_isa)
7878 elf_elfheader (obfd)->e_flags &= ~EF_MIPS_ARCH;
7879 elf_elfheader (obfd)->e_flags
7880 |= new_flags & EF_MIPS_ARCH;
7886 (*_bfd_error_handler)
7887 (_("%s: ISA mismatch (%d) with previous modules (%d)"),
7888 bfd_archive_filename (ibfd),
7889 _bfd_elf_mips_mach (new_flags),
7890 _bfd_elf_mips_mach (old_flags));
7894 new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
7895 old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
7898 /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
7899 does set EI_CLASS differently from any 32-bit ABI. */
7900 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
7901 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
7902 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
7904 /* Only error if both are set (to different values). */
7905 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
7906 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
7907 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
7909 (*_bfd_error_handler)
7910 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
7911 bfd_archive_filename (ibfd),
7912 elf_mips_abi_name (ibfd),
7913 elf_mips_abi_name (obfd));
7916 new_flags &= ~EF_MIPS_ABI;
7917 old_flags &= ~EF_MIPS_ABI;
7920 /* For now, allow arbitrary mixing of ASEs (retain the union). */
7921 if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE))
7923 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE;
7925 new_flags &= ~ EF_MIPS_ARCH_ASE;
7926 old_flags &= ~ EF_MIPS_ARCH_ASE;
7929 /* Warn about any other mismatches */
7930 if (new_flags != old_flags)
7932 (*_bfd_error_handler)
7933 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
7934 bfd_archive_filename (ibfd), (unsigned long) new_flags,
7935 (unsigned long) old_flags);
7941 bfd_set_error (bfd_error_bad_value);
7948 /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
7951 _bfd_mips_elf_set_private_flags (abfd, flags)
7955 BFD_ASSERT (!elf_flags_init (abfd)
7956 || elf_elfheader (abfd)->e_flags == flags);
7958 elf_elfheader (abfd)->e_flags = flags;
7959 elf_flags_init (abfd) = TRUE;
7964 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
7968 FILE *file = (FILE *) ptr;
7970 BFD_ASSERT (abfd != NULL && ptr != NULL);
7972 /* Print normal ELF private data. */
7973 _bfd_elf_print_private_bfd_data (abfd, ptr);
7975 /* xgettext:c-format */
7976 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7978 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
7979 fprintf (file, _(" [abi=O32]"));
7980 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
7981 fprintf (file, _(" [abi=O64]"));
7982 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
7983 fprintf (file, _(" [abi=EABI32]"));
7984 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
7985 fprintf (file, _(" [abi=EABI64]"));
7986 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
7987 fprintf (file, _(" [abi unknown]"));
7988 else if (ABI_N32_P (abfd))
7989 fprintf (file, _(" [abi=N32]"));
7990 else if (ABI_64_P (abfd))
7991 fprintf (file, _(" [abi=64]"));
7993 fprintf (file, _(" [no abi set]"));
7995 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
7996 fprintf (file, _(" [mips1]"));
7997 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
7998 fprintf (file, _(" [mips2]"));
7999 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
8000 fprintf (file, _(" [mips3]"));
8001 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
8002 fprintf (file, _(" [mips4]"));
8003 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
8004 fprintf (file, _(" [mips5]"));
8005 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
8006 fprintf (file, _(" [mips32]"));
8007 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
8008 fprintf (file, _(" [mips64]"));
8010 fprintf (file, _(" [unknown ISA]"));
8012 if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX)
8013 fprintf (file, _(" [mdmx]"));
8015 if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16)
8016 fprintf (file, _(" [mips16]"));
8018 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
8019 fprintf (file, _(" [32bitmode]"));
8021 fprintf (file, _(" [not 32bitmode]"));