1 /* MIPS-specific support for 32-bit ELF
2 Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
4 Most of the information added by Ian Lance Taylor, Cygnus Support,
6 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
7 <mark@codesourcery.com>
9 This file is part of BFD, the Binary File Descriptor library.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
26 different MIPS ELF from other targets. This matters when linking.
27 This file supports both, switching at runtime. */
37 /* Get the ECOFF swapping routines. */
39 #include "coff/symconst.h"
40 #include "coff/internal.h"
41 #include "coff/ecoff.h"
42 #include "coff/mips.h"
44 #include "ecoffswap.h"
46 /* This structure is used to hold .got information when linking. It
47 is stored in the tdata field of the bfd_elf_section_data structure. */
51 /* The global symbol in the GOT with the lowest index in the dynamic
53 struct elf_link_hash_entry *global_gotsym;
54 /* The number of global .got entries. */
55 unsigned int global_gotno;
56 /* The number of local .got entries. */
57 unsigned int local_gotno;
58 /* The number of local .got entries we have used. */
59 unsigned int assigned_gotno;
62 /* The MIPS ELF linker needs additional information for each symbol in
63 the global hash table. */
65 struct mips_elf_link_hash_entry
67 struct elf_link_hash_entry root;
69 /* External symbol information. */
72 /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
74 unsigned int possibly_dynamic_relocs;
76 /* The index of the first dynamic relocation (in the .rel.dyn
77 section) against this symbol. */
78 unsigned int min_dyn_reloc_index;
80 /* If there is a stub that 32 bit functions should use to call this
81 16 bit function, this points to the section containing the stub. */
84 /* Whether we need the fn_stub; this is set if this symbol appears
85 in any relocs other than a 16 bit call. */
88 /* If there is a stub that 16 bit functions should use to call this
89 32 bit function, this points to the section containing the stub. */
92 /* This is like the call_stub field, but it is used if the function
93 being called returns a floating point value. */
94 asection *call_fp_stub;
97 static bfd_reloc_status_type mips32_64bit_reloc
98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
99 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
100 PARAMS ((bfd *, bfd_reloc_code_real_type));
101 static reloc_howto_type *mips_rtype_to_howto
102 PARAMS ((unsigned int));
103 static void mips_info_to_howto_rel
104 PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
105 static void mips_info_to_howto_rela
106 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
107 static void bfd_mips_elf32_swap_gptab_in
108 PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
109 static void bfd_mips_elf32_swap_gptab_out
110 PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
111 static void bfd_mips_elf_swap_msym_in
112 PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
113 static void bfd_mips_elf_swap_msym_out
114 PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
115 static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
116 static boolean mips_elf_create_procedure_table
117 PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
118 struct ecoff_debug_info *));
119 static INLINE int elf_mips_isa PARAMS ((flagword));
120 static INLINE int elf_mips_mach PARAMS ((flagword));
121 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
122 static boolean mips_elf_is_local_label_name
123 PARAMS ((bfd *, const char *));
124 static struct bfd_hash_entry *mips_elf_link_hash_newfunc
125 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
126 static int gptab_compare PARAMS ((const void *, const void *));
127 static bfd_reloc_status_type mips16_jump_reloc
128 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
129 static bfd_reloc_status_type mips16_gprel_reloc
130 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
131 static boolean mips_elf_create_compact_rel_section
132 PARAMS ((bfd *, struct bfd_link_info *));
133 static boolean mips_elf_create_got_section
134 PARAMS ((bfd *, struct bfd_link_info *));
135 static bfd_reloc_status_type mips_elf_final_gp
136 PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
137 static bfd_byte *elf32_mips_get_relocated_section_contents
138 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
139 bfd_byte *, boolean, asymbol **));
140 static asection *mips_elf_create_msym_section
142 static void mips_elf_irix6_finish_dynamic_symbol
143 PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
144 static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
145 static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
146 static bfd_vma mips_elf_high PARAMS ((bfd_vma));
147 static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
148 static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
149 static bfd_vma mips_elf_global_got_index
150 PARAMS ((bfd *, struct elf_link_hash_entry *));
151 static bfd_vma mips_elf_local_got_index
152 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
153 static bfd_vma mips_elf_got_offset_from_index
154 PARAMS ((bfd *, bfd *, bfd_vma));
155 static boolean mips_elf_record_global_got_symbol
156 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
157 struct mips_got_info *));
158 static bfd_vma mips_elf_got_page
159 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
160 static const Elf_Internal_Rela *mips_elf_next_lo16_relocation
161 PARAMS ((const Elf_Internal_Rela *, const Elf_Internal_Rela *));
162 static bfd_reloc_status_type mips_elf_calculate_relocation
163 PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
164 const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
165 Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
167 static bfd_vma mips_elf_obtain_contents
168 PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
169 static boolean mips_elf_perform_relocation
170 PARAMS ((struct bfd_link_info *, reloc_howto_type *,
171 const Elf_Internal_Rela *, bfd_vma,
172 bfd *, asection *, bfd_byte *, boolean));
173 static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
174 static boolean mips_elf_sort_hash_table_f
175 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
176 static boolean mips_elf_sort_hash_table
177 PARAMS ((struct bfd_link_info *, unsigned long));
178 static asection * mips_elf_got_section PARAMS ((bfd *));
179 static struct mips_got_info *mips_elf_got_info
180 PARAMS ((bfd *, asection **));
181 static boolean mips_elf_local_relocation_p
182 PARAMS ((bfd *, const Elf_Internal_Rela *, asection **));
183 static bfd_vma mips_elf_create_local_got_entry
184 PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
185 static bfd_vma mips_elf_got16_entry
186 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
187 static boolean mips_elf_create_dynamic_relocation
188 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
189 struct mips_elf_link_hash_entry *, asection *,
190 bfd_vma, bfd_vma *, asection *));
191 static void mips_elf_allocate_dynamic_relocations
192 PARAMS ((bfd *, unsigned int));
193 static boolean mips_elf_stub_section_p
194 PARAMS ((bfd *, asection *));
196 /* The level of IRIX compatibility we're striving for. */
204 /* Nonzero if ABFD is using the N32 ABI. */
206 #define ABI_N32_P(abfd) \
207 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
209 /* Nonzero if ABFD is using the 64-bit ABI. FIXME: This is never
211 #define ABI_64_P(abfd) \
212 ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0)
214 /* What version of Irix we are trying to be compatible with. FIXME:
215 At the moment, we never generate "normal" MIPS ELF ABI executables;
216 we always use some version of Irix. */
218 #define IRIX_COMPAT(abfd) \
219 ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5)
221 /* Whether we are trying to be compatible with IRIX at all. */
223 #define SGI_COMPAT(abfd) \
224 (IRIX_COMPAT (abfd) != ict_none)
226 /* The name of the msym section. */
227 #define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym"
229 /* The name of the srdata section. */
230 #define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata"
232 /* The name of the options section. */
233 #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
234 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options")
236 /* The name of the stub section. */
237 #define MIPS_ELF_STUB_SECTION_NAME(abfd) \
238 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub")
240 /* The name of the dynamic relocation section. */
241 #define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn"
243 /* The size of an external REL relocation. */
244 #define MIPS_ELF_REL_SIZE(abfd) \
245 (get_elf_backend_data (abfd)->s->sizeof_rel)
247 /* The size of an external dynamic table entry. */
248 #define MIPS_ELF_DYN_SIZE(abfd) \
249 (get_elf_backend_data (abfd)->s->sizeof_dyn)
251 /* The size of a GOT entry. */
252 #define MIPS_ELF_GOT_SIZE(abfd) \
253 (get_elf_backend_data (abfd)->s->arch_size / 8)
255 /* The size of a symbol-table entry. */
256 #define MIPS_ELF_SYM_SIZE(abfd) \
257 (get_elf_backend_data (abfd)->s->sizeof_sym)
259 /* The default alignment for sections, as a power of two. */
260 #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
261 (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
263 /* Get word-sized data. */
264 #define MIPS_ELF_GET_WORD(abfd, ptr) \
265 (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
267 /* Put out word-sized data. */
268 #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
270 ? bfd_put_64 (abfd, val, ptr) \
271 : bfd_put_32 (abfd, val, ptr))
273 /* Add a dynamic symbol table-entry. */
275 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
276 (ABI_64_P (elf_hash_table (info)->dynobj) \
277 ? bfd_elf64_add_dynamic_entry (info, tag, val) \
278 : bfd_elf32_add_dynamic_entry (info, tag, val))
280 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
281 (ABI_64_P (elf_hash_table (info)->dynobj) \
282 ? (abort (), false) \
283 : bfd_elf32_add_dynamic_entry (info, tag, val))
286 /* The number of local .got entries we reserve. */
287 #define MIPS_RESERVED_GOTNO (2)
289 /* Instructions which appear in a stub. For some reason the stub is
290 slightly different on an SGI system. */
291 #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
292 #define STUB_LW(abfd) \
295 ? 0xdf998010 /* ld t9,0x8010(gp) */ \
296 : 0x8f998010) /* lw t9,0x8010(gp) */ \
297 : 0x8f998000) /* lw t9,0x8000(gp) */
298 #define STUB_MOVE 0x03e07825 /* move t7,ra */
299 #define STUB_JALR 0x0320f809 /* jal t9 */
300 #define STUB_LI16 0x34180000 /* ori t8,zero,0 */
301 #define MIPS_FUNCTION_STUB_SIZE (16)
304 /* We no longer try to identify particular sections for the .dynsym
305 section. When we do, we wind up crashing if there are other random
306 sections with relocations. */
308 /* Names of sections which appear in the .dynsym section in an Irix 5
311 static const char * const mips_elf_dynsym_sec_names[] =
324 #define SIZEOF_MIPS_DYNSYM_SECNAMES \
325 (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0])
327 /* The number of entries in mips_elf_dynsym_sec_names which go in the
330 #define MIPS_TEXT_DYNSYM_SECNO (3)
334 /* The names of the runtime procedure table symbols used on Irix 5. */
336 static const char * const mips_elf_dynsym_rtproc_names[] =
339 "_procedure_string_table",
340 "_procedure_table_size",
344 /* These structures are used to generate the .compact_rel section on
349 unsigned long id1; /* Always one? */
350 unsigned long num; /* Number of compact relocation entries. */
351 unsigned long id2; /* Always two? */
352 unsigned long offset; /* The file offset of the first relocation. */
353 unsigned long reserved0; /* Zero? */
354 unsigned long reserved1; /* Zero? */
363 bfd_byte reserved0[4];
364 bfd_byte reserved1[4];
365 } Elf32_External_compact_rel;
369 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
370 unsigned int rtype : 4; /* Relocation types. See below. */
371 unsigned int dist2to : 8;
372 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
373 unsigned long konst; /* KONST field. See below. */
374 unsigned long vaddr; /* VADDR to be relocated. */
379 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
380 unsigned int rtype : 4; /* Relocation types. See below. */
381 unsigned int dist2to : 8;
382 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
383 unsigned long konst; /* KONST field. See below. */
391 } Elf32_External_crinfo;
397 } Elf32_External_crinfo2;
399 /* These are the constants used to swap the bitfields in a crinfo. */
401 #define CRINFO_CTYPE (0x1)
402 #define CRINFO_CTYPE_SH (31)
403 #define CRINFO_RTYPE (0xf)
404 #define CRINFO_RTYPE_SH (27)
405 #define CRINFO_DIST2TO (0xff)
406 #define CRINFO_DIST2TO_SH (19)
407 #define CRINFO_RELVADDR (0x7ffff)
408 #define CRINFO_RELVADDR_SH (0)
410 /* A compact relocation info has long (3 words) or short (2 words)
411 formats. A short format doesn't have VADDR field and relvaddr
412 fields contains ((VADDR - vaddr of the previous entry) >> 2). */
413 #define CRF_MIPS_LONG 1
414 #define CRF_MIPS_SHORT 0
416 /* There are 4 types of compact relocation at least. The value KONST
417 has different meaning for each type:
420 CT_MIPS_REL32 Address in data
421 CT_MIPS_WORD Address in word (XXX)
422 CT_MIPS_GPHI_LO GP - vaddr
423 CT_MIPS_JMPAD Address to jump
426 #define CRT_MIPS_REL32 0xa
427 #define CRT_MIPS_WORD 0xb
428 #define CRT_MIPS_GPHI_LO 0xc
429 #define CRT_MIPS_JMPAD 0xd
431 #define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
432 #define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
433 #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
434 #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
436 static void bfd_elf32_swap_compact_rel_out
437 PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
438 static void bfd_elf32_swap_crinfo_out
439 PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
441 #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */
443 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
444 from smaller values. Start with zero, widen, *then* decrement. */
445 #define MINUS_ONE (((bfd_vma)0) - 1)
447 static reloc_howto_type elf_mips_howto_table[] =
450 HOWTO (R_MIPS_NONE, /* type */
452 0, /* size (0 = byte, 1 = short, 2 = long) */
454 false, /* pc_relative */
456 complain_overflow_dont, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_MIPS_NONE", /* name */
459 false, /* partial_inplace */
462 false), /* pcrel_offset */
464 /* 16 bit relocation. */
465 HOWTO (R_MIPS_16, /* type */
467 1, /* size (0 = byte, 1 = short, 2 = long) */
469 false, /* pc_relative */
471 complain_overflow_bitfield, /* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_MIPS_16", /* name */
474 true, /* partial_inplace */
475 0xffff, /* src_mask */
476 0xffff, /* dst_mask */
477 false), /* pcrel_offset */
479 /* 32 bit relocation. */
480 HOWTO (R_MIPS_32, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 false, /* pc_relative */
486 complain_overflow_bitfield, /* complain_on_overflow */
487 bfd_elf_generic_reloc, /* special_function */
488 "R_MIPS_32", /* name */
489 true, /* partial_inplace */
490 0xffffffff, /* src_mask */
491 0xffffffff, /* dst_mask */
492 false), /* pcrel_offset */
494 /* 32 bit symbol relative relocation. */
495 HOWTO (R_MIPS_REL32, /* type */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
499 false, /* pc_relative */
501 complain_overflow_bitfield, /* complain_on_overflow */
502 bfd_elf_generic_reloc, /* special_function */
503 "R_MIPS_REL32", /* name */
504 true, /* partial_inplace */
505 0xffffffff, /* src_mask */
506 0xffffffff, /* dst_mask */
507 false), /* pcrel_offset */
509 /* 26 bit branch address. */
510 HOWTO (R_MIPS_26, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 false, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 /* This needs complex overflow
518 detection, because the upper four
519 bits must match the PC. */
520 bfd_elf_generic_reloc, /* special_function */
521 "R_MIPS_26", /* name */
522 true, /* partial_inplace */
523 0x3ffffff, /* src_mask */
524 0x3ffffff, /* dst_mask */
525 false), /* pcrel_offset */
527 /* High 16 bits of symbol value. */
528 HOWTO (R_MIPS_HI16, /* type */
530 2, /* size (0 = byte, 1 = short, 2 = long) */
532 false, /* pc_relative */
534 complain_overflow_dont, /* complain_on_overflow */
535 _bfd_mips_elf_hi16_reloc, /* special_function */
536 "R_MIPS_HI16", /* name */
537 true, /* partial_inplace */
538 0xffff, /* src_mask */
539 0xffff, /* dst_mask */
540 false), /* pcrel_offset */
542 /* Low 16 bits of symbol value. */
543 HOWTO (R_MIPS_LO16, /* type */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
547 false, /* pc_relative */
549 complain_overflow_dont, /* complain_on_overflow */
550 _bfd_mips_elf_lo16_reloc, /* special_function */
551 "R_MIPS_LO16", /* name */
552 true, /* partial_inplace */
553 0xffff, /* src_mask */
554 0xffff, /* dst_mask */
555 false), /* pcrel_offset */
557 /* GP relative reference. */
558 HOWTO (R_MIPS_GPREL16, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 false, /* pc_relative */
564 complain_overflow_signed, /* complain_on_overflow */
565 _bfd_mips_elf_gprel16_reloc, /* special_function */
566 "R_MIPS_GPREL16", /* name */
567 true, /* partial_inplace */
568 0xffff, /* src_mask */
569 0xffff, /* dst_mask */
570 false), /* pcrel_offset */
572 /* Reference to literal section. */
573 HOWTO (R_MIPS_LITERAL, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 false, /* pc_relative */
579 complain_overflow_signed, /* complain_on_overflow */
580 _bfd_mips_elf_gprel16_reloc, /* special_function */
581 "R_MIPS_LITERAL", /* name */
582 true, /* partial_inplace */
583 0xffff, /* src_mask */
584 0xffff, /* dst_mask */
585 false), /* pcrel_offset */
587 /* Reference to global offset table. */
588 HOWTO (R_MIPS_GOT16, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 false, /* pc_relative */
594 complain_overflow_signed, /* complain_on_overflow */
595 _bfd_mips_elf_got16_reloc, /* special_function */
596 "R_MIPS_GOT16", /* name */
597 false, /* partial_inplace */
598 0xffff, /* src_mask */
599 0xffff, /* dst_mask */
600 false), /* pcrel_offset */
602 /* 16 bit PC relative reference. */
603 HOWTO (R_MIPS_PC16, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 true, /* pc_relative */
609 complain_overflow_signed, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_MIPS_PC16", /* name */
612 true, /* partial_inplace */
613 0xffff, /* src_mask */
614 0xffff, /* dst_mask */
615 false), /* pcrel_offset */
617 /* 16 bit call through global offset table. */
618 HOWTO (R_MIPS_CALL16, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 false, /* pc_relative */
624 complain_overflow_signed, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_MIPS_CALL16", /* name */
627 false, /* partial_inplace */
628 0xffff, /* src_mask */
629 0xffff, /* dst_mask */
630 false), /* pcrel_offset */
632 /* 32 bit GP relative reference. */
633 HOWTO (R_MIPS_GPREL32, /* type */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
637 false, /* pc_relative */
639 complain_overflow_bitfield, /* complain_on_overflow */
640 _bfd_mips_elf_gprel32_reloc, /* special_function */
641 "R_MIPS_GPREL32", /* name */
642 true, /* partial_inplace */
643 0xffffffff, /* src_mask */
644 0xffffffff, /* dst_mask */
645 false), /* pcrel_offset */
647 /* The remaining relocs are defined on Irix 5, although they are
648 not defined by the ABI. */
653 /* A 5 bit shift field. */
654 HOWTO (R_MIPS_SHIFT5, /* type */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
658 false, /* pc_relative */
660 complain_overflow_bitfield, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 "R_MIPS_SHIFT5", /* name */
663 true, /* partial_inplace */
664 0x000007c0, /* src_mask */
665 0x000007c0, /* dst_mask */
666 false), /* pcrel_offset */
668 /* A 6 bit shift field. */
669 /* FIXME: This is not handled correctly; a special function is
670 needed to put the most significant bit in the right place. */
671 HOWTO (R_MIPS_SHIFT6, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 false, /* pc_relative */
677 complain_overflow_bitfield, /* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_MIPS_SHIFT6", /* name */
680 true, /* partial_inplace */
681 0x000007c4, /* src_mask */
682 0x000007c4, /* dst_mask */
683 false), /* pcrel_offset */
685 /* A 64 bit relocation. */
686 HOWTO (R_MIPS_64, /* type */
688 4, /* size (0 = byte, 1 = short, 2 = long) */
690 false, /* pc_relative */
692 complain_overflow_bitfield, /* complain_on_overflow */
693 mips32_64bit_reloc, /* special_function */
694 "R_MIPS_64", /* name */
695 true, /* partial_inplace */
696 MINUS_ONE, /* src_mask */
697 MINUS_ONE, /* dst_mask */
698 false), /* pcrel_offset */
700 /* Displacement in the global offset table. */
701 HOWTO (R_MIPS_GOT_DISP, /* type */
703 2, /* size (0 = byte, 1 = short, 2 = long) */
705 false, /* pc_relative */
707 complain_overflow_bitfield, /* complain_on_overflow */
708 bfd_elf_generic_reloc, /* special_function */
709 "R_MIPS_GOT_DISP", /* name */
710 true, /* partial_inplace */
711 0x0000ffff, /* src_mask */
712 0x0000ffff, /* dst_mask */
713 false), /* pcrel_offset */
715 /* Displacement to page pointer in the global offset table. */
716 HOWTO (R_MIPS_GOT_PAGE, /* type */
718 2, /* size (0 = byte, 1 = short, 2 = long) */
720 false, /* pc_relative */
722 complain_overflow_bitfield, /* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_MIPS_GOT_PAGE", /* name */
725 true, /* partial_inplace */
726 0x0000ffff, /* src_mask */
727 0x0000ffff, /* dst_mask */
728 false), /* pcrel_offset */
730 /* Offset from page pointer in the global offset table. */
731 HOWTO (R_MIPS_GOT_OFST, /* type */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
735 false, /* pc_relative */
737 complain_overflow_bitfield, /* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_MIPS_GOT_OFST", /* name */
740 true, /* partial_inplace */
741 0x0000ffff, /* src_mask */
742 0x0000ffff, /* dst_mask */
743 false), /* pcrel_offset */
745 /* High 16 bits of displacement in global offset table. */
746 HOWTO (R_MIPS_GOT_HI16, /* type */
748 2, /* size (0 = byte, 1 = short, 2 = long) */
750 false, /* pc_relative */
752 complain_overflow_dont, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_MIPS_GOT_HI16", /* name */
755 true, /* partial_inplace */
756 0x0000ffff, /* src_mask */
757 0x0000ffff, /* dst_mask */
758 false), /* pcrel_offset */
760 /* Low 16 bits of displacement in global offset table. */
761 HOWTO (R_MIPS_GOT_LO16, /* type */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
765 false, /* pc_relative */
767 complain_overflow_dont, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_MIPS_GOT_LO16", /* name */
770 true, /* partial_inplace */
771 0x0000ffff, /* src_mask */
772 0x0000ffff, /* dst_mask */
773 false), /* pcrel_offset */
775 /* 64 bit subtraction. Used in the N32 ABI. */
776 HOWTO (R_MIPS_SUB, /* type */
778 4, /* size (0 = byte, 1 = short, 2 = long) */
780 false, /* pc_relative */
782 complain_overflow_bitfield, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_MIPS_SUB", /* name */
785 true, /* partial_inplace */
786 MINUS_ONE, /* src_mask */
787 MINUS_ONE, /* dst_mask */
788 false), /* pcrel_offset */
790 /* Used to cause the linker to insert and delete instructions? */
791 EMPTY_HOWTO (R_MIPS_INSERT_A),
792 EMPTY_HOWTO (R_MIPS_INSERT_B),
793 EMPTY_HOWTO (R_MIPS_DELETE),
795 /* Get the higher value of a 64 bit addend. */
796 HOWTO (R_MIPS_HIGHER, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 false, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 "R_MIPS_HIGHER", /* name */
805 true, /* partial_inplace */
807 0xffff, /* dst_mask */
808 false), /* pcrel_offset */
810 /* Get the highest value of a 64 bit addend. */
811 HOWTO (R_MIPS_HIGHEST, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 false, /* pc_relative */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_MIPS_HIGHEST", /* name */
820 true, /* partial_inplace */
822 0xffff, /* dst_mask */
823 false), /* pcrel_offset */
825 /* High 16 bits of displacement in global offset table. */
826 HOWTO (R_MIPS_CALL_HI16, /* type */
828 2, /* size (0 = byte, 1 = short, 2 = long) */
830 false, /* pc_relative */
832 complain_overflow_dont, /* complain_on_overflow */
833 bfd_elf_generic_reloc, /* special_function */
834 "R_MIPS_CALL_HI16", /* name */
835 true, /* partial_inplace */
836 0x0000ffff, /* src_mask */
837 0x0000ffff, /* dst_mask */
838 false), /* pcrel_offset */
840 /* Low 16 bits of displacement in global offset table. */
841 HOWTO (R_MIPS_CALL_LO16, /* type */
843 2, /* size (0 = byte, 1 = short, 2 = long) */
845 false, /* pc_relative */
847 complain_overflow_dont, /* complain_on_overflow */
848 bfd_elf_generic_reloc, /* special_function */
849 "R_MIPS_CALL_LO16", /* name */
850 true, /* partial_inplace */
851 0x0000ffff, /* src_mask */
852 0x0000ffff, /* dst_mask */
853 false), /* pcrel_offset */
855 /* Section displacement. */
856 HOWTO (R_MIPS_SCN_DISP, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 false, /* pc_relative */
862 complain_overflow_dont, /* complain_on_overflow */
863 bfd_elf_generic_reloc, /* special_function */
864 "R_MIPS_SCN_DISP", /* name */
865 false, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 false), /* pcrel_offset */
870 EMPTY_HOWTO (R_MIPS_REL16),
871 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
872 EMPTY_HOWTO (R_MIPS_PJUMP),
873 EMPTY_HOWTO (R_MIPS_RELGOT),
875 /* Protected jump conversion. This is an optimization hint. No
876 relocation is required for correctness. */
877 HOWTO (R_MIPS_JALR, /* type */
879 0, /* size (0 = byte, 1 = short, 2 = long) */
881 false, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_MIPS_JALR", /* name */
886 false, /* partial_inplace */
887 0x00000000, /* src_mask */
888 0x00000000, /* dst_mask */
889 false), /* pcrel_offset */
892 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
893 is a hack to make the linker think that we need 64 bit values. */
894 static reloc_howto_type elf_mips_ctor64_howto =
895 HOWTO (R_MIPS_64, /* type */
897 4, /* size (0 = byte, 1 = short, 2 = long) */
899 false, /* pc_relative */
901 complain_overflow_signed, /* complain_on_overflow */
902 mips32_64bit_reloc, /* special_function */
903 "R_MIPS_64", /* name */
904 true, /* partial_inplace */
905 0xffffffff, /* src_mask */
906 0xffffffff, /* dst_mask */
907 false); /* pcrel_offset */
909 /* The reloc used for the mips16 jump instruction. */
910 static reloc_howto_type elf_mips16_jump_howto =
911 HOWTO (R_MIPS16_26, /* type */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 false, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 /* This needs complex overflow
919 detection, because the upper four
920 bits must match the PC. */
921 mips16_jump_reloc, /* special_function */
922 "R_MIPS16_26", /* name */
923 true, /* partial_inplace */
924 0x3ffffff, /* src_mask */
925 0x3ffffff, /* dst_mask */
926 false); /* pcrel_offset */
928 /* The reloc used for the mips16 gprel instruction. */
929 static reloc_howto_type elf_mips16_gprel_howto =
930 HOWTO (R_MIPS16_GPREL, /* type */
932 2, /* size (0 = byte, 1 = short, 2 = long) */
934 false, /* pc_relative */
936 complain_overflow_signed, /* complain_on_overflow */
937 mips16_gprel_reloc, /* special_function */
938 "R_MIPS16_GPREL", /* name */
939 true, /* partial_inplace */
940 0x07ff001f, /* src_mask */
941 0x07ff001f, /* dst_mask */
942 false); /* pcrel_offset */
945 /* GNU extension to record C++ vtable hierarchy */
946 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
947 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
949 2, /* size (0 = byte, 1 = short, 2 = long) */
951 false, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 NULL, /* special_function */
955 "R_MIPS_GNU_VTINHERIT", /* name */
956 false, /* partial_inplace */
959 false); /* pcrel_offset */
961 /* GNU extension to record C++ vtable member usage */
962 static reloc_howto_type elf_mips_gnu_vtentry_howto =
963 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
965 2, /* size (0 = byte, 1 = short, 2 = long) */
967 false, /* pc_relative */
969 complain_overflow_dont, /* complain_on_overflow */
970 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
971 "R_MIPS_GNU_VTENTRY", /* name */
972 false, /* partial_inplace */
975 false); /* pcrel_offset */
977 /* Do a R_MIPS_HI16 relocation. This has to be done in combination
978 with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
979 the HI16. Here we just save the information we need; we do the
980 actual relocation when we see the LO16. MIPS ELF requires that the
981 LO16 immediately follow the HI16. As a GNU extension, we permit an
982 arbitrary number of HI16 relocs to be associated with a single LO16
983 reloc. This extension permits gcc to output the HI and LO relocs
988 struct mips_hi16 *next;
993 /* FIXME: This should not be a static variable. */
995 static struct mips_hi16 *mips_hi16_list;
997 bfd_reloc_status_type
998 _bfd_mips_elf_hi16_reloc (abfd,
1005 bfd *abfd ATTRIBUTE_UNUSED;
1006 arelent *reloc_entry;
1009 asection *input_section;
1011 char **error_message;
1013 bfd_reloc_status_type ret;
1015 struct mips_hi16 *n;
1017 /* If we're relocating, and this an external symbol, we don't want
1018 to change anything. */
1019 if (output_bfd != (bfd *) NULL
1020 && (symbol->flags & BSF_SECTION_SYM) == 0
1021 && reloc_entry->addend == 0)
1023 reloc_entry->address += input_section->output_offset;
1024 return bfd_reloc_ok;
1029 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1031 boolean relocateable;
1034 if (ret == bfd_reloc_undefined)
1037 if (output_bfd != NULL)
1038 relocateable = true;
1041 relocateable = false;
1042 output_bfd = symbol->section->output_section->owner;
1045 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1046 error_message, &gp);
1047 if (ret != bfd_reloc_ok)
1050 relocation = gp - reloc_entry->address;
1054 if (bfd_is_und_section (symbol->section)
1055 && output_bfd == (bfd *) NULL)
1056 ret = bfd_reloc_undefined;
1058 if (bfd_is_com_section (symbol->section))
1061 relocation = symbol->value;
1064 relocation += symbol->section->output_section->vma;
1065 relocation += symbol->section->output_offset;
1066 relocation += reloc_entry->addend;
1068 if (reloc_entry->address > input_section->_cooked_size)
1069 return bfd_reloc_outofrange;
1071 /* Save the information, and let LO16 do the actual relocation. */
1072 n = (struct mips_hi16 *) bfd_malloc (sizeof *n);
1074 return bfd_reloc_outofrange;
1075 n->addr = (bfd_byte *) data + reloc_entry->address;
1076 n->addend = relocation;
1077 n->next = mips_hi16_list;
1080 if (output_bfd != (bfd *) NULL)
1081 reloc_entry->address += input_section->output_offset;
1086 /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
1087 inplace relocation; this function exists in order to do the
1088 R_MIPS_HI16 relocation described above. */
1090 bfd_reloc_status_type
1091 _bfd_mips_elf_lo16_reloc (abfd,
1099 arelent *reloc_entry;
1102 asection *input_section;
1104 char **error_message;
1106 arelent gp_disp_relent;
1108 if (mips_hi16_list != NULL)
1110 struct mips_hi16 *l;
1117 unsigned long vallo;
1118 struct mips_hi16 *next;
1120 /* Do the HI16 relocation. Note that we actually don't need
1121 to know anything about the LO16 itself, except where to
1122 find the low 16 bits of the addend needed by the LO16. */
1123 insn = bfd_get_32 (abfd, l->addr);
1124 vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
1126 val = ((insn & 0xffff) << 16) + vallo;
1129 /* The low order 16 bits are always treated as a signed
1130 value. Therefore, a negative value in the low order bits
1131 requires an adjustment in the high order bits. We need
1132 to make this adjustment in two ways: once for the bits we
1133 took from the data, and once for the bits we are putting
1134 back in to the data. */
1135 if ((vallo & 0x8000) != 0)
1137 if ((val & 0x8000) != 0)
1140 insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
1141 bfd_put_32 (abfd, insn, l->addr);
1143 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1145 gp_disp_relent = *reloc_entry;
1146 reloc_entry = &gp_disp_relent;
1147 reloc_entry->addend = l->addend;
1155 mips_hi16_list = NULL;
1157 else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1159 bfd_reloc_status_type ret;
1160 bfd_vma gp, relocation;
1162 /* FIXME: Does this case ever occur? */
1164 ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
1165 if (ret != bfd_reloc_ok)
1168 relocation = gp - reloc_entry->address;
1169 relocation += symbol->section->output_section->vma;
1170 relocation += symbol->section->output_offset;
1171 relocation += reloc_entry->addend;
1173 if (reloc_entry->address > input_section->_cooked_size)
1174 return bfd_reloc_outofrange;
1176 gp_disp_relent = *reloc_entry;
1177 reloc_entry = &gp_disp_relent;
1178 reloc_entry->addend = relocation - 4;
1181 /* Now do the LO16 reloc in the usual way. */
1182 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1183 input_section, output_bfd, error_message);
1186 /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
1187 table used for PIC code. If the symbol is an external symbol, the
1188 instruction is modified to contain the offset of the appropriate
1189 entry in the global offset table. If the symbol is a section
1190 symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
1191 addends are combined to form the real addend against the section
1192 symbol; the GOT16 is modified to contain the offset of an entry in
1193 the global offset table, and the LO16 is modified to offset it
1194 appropriately. Thus an offset larger than 16 bits requires a
1195 modified value in the global offset table.
1197 This implementation suffices for the assembler, but the linker does
1198 not yet know how to create global offset tables. */
1200 bfd_reloc_status_type
1201 _bfd_mips_elf_got16_reloc (abfd,
1209 arelent *reloc_entry;
1212 asection *input_section;
1214 char **error_message;
1216 /* If we're relocating, and this an external symbol, we don't want
1217 to change anything. */
1218 if (output_bfd != (bfd *) NULL
1219 && (symbol->flags & BSF_SECTION_SYM) == 0
1220 && reloc_entry->addend == 0)
1222 reloc_entry->address += input_section->output_offset;
1223 return bfd_reloc_ok;
1226 /* If we're relocating, and this is a local symbol, we can handle it
1228 if (output_bfd != (bfd *) NULL
1229 && (symbol->flags & BSF_SECTION_SYM) != 0)
1230 return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
1231 input_section, output_bfd, error_message);
1236 /* Set the GP value for OUTPUT_BFD. Returns false if this is a
1237 dangerous relocation. */
1240 mips_elf_assign_gp (output_bfd, pgp)
1248 /* If we've already figured out what GP will be, just return it. */
1249 *pgp = _bfd_get_gp_value (output_bfd);
1253 count = bfd_get_symcount (output_bfd);
1254 sym = bfd_get_outsymbols (output_bfd);
1256 /* The linker script will have created a symbol named `_gp' with the
1257 appropriate value. */
1258 if (sym == (asymbol **) NULL)
1262 for (i = 0; i < count; i++, sym++)
1264 register CONST char *name;
1266 name = bfd_asymbol_name (*sym);
1267 if (*name == '_' && strcmp (name, "_gp") == 0)
1269 *pgp = bfd_asymbol_value (*sym);
1270 _bfd_set_gp_value (output_bfd, *pgp);
1278 /* Only get the error once. */
1280 _bfd_set_gp_value (output_bfd, *pgp);
1287 /* We have to figure out the gp value, so that we can adjust the
1288 symbol value correctly. We look up the symbol _gp in the output
1289 BFD. If we can't find it, we're stuck. We cache it in the ELF
1290 target data. We don't need to adjust the symbol value for an
1291 external symbol if we are producing relocateable output. */
1293 static bfd_reloc_status_type
1294 mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
1297 boolean relocateable;
1298 char **error_message;
1301 if (bfd_is_und_section (symbol->section)
1305 return bfd_reloc_undefined;
1308 *pgp = _bfd_get_gp_value (output_bfd);
1311 || (symbol->flags & BSF_SECTION_SYM) != 0))
1315 /* Make up a value. */
1316 *pgp = symbol->section->output_section->vma + 0x4000;
1317 _bfd_set_gp_value (output_bfd, *pgp);
1319 else if (!mips_elf_assign_gp (output_bfd, pgp))
1322 (char *) _("GP relative relocation when _gp not defined");
1323 return bfd_reloc_dangerous;
1327 return bfd_reloc_ok;
1330 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1331 become the offset from the gp register. This function also handles
1332 R_MIPS_LITERAL relocations, although those can be handled more
1333 cleverly because the entries in the .lit8 and .lit4 sections can be
1336 static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *,
1337 arelent *, asection *,
1338 boolean, PTR, bfd_vma));
1340 bfd_reloc_status_type
1341 _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
1342 output_bfd, error_message)
1344 arelent *reloc_entry;
1347 asection *input_section;
1349 char **error_message;
1351 boolean relocateable;
1352 bfd_reloc_status_type ret;
1355 /* If we're relocating, and this is an external symbol with no
1356 addend, we don't want to change anything. We will only have an
1357 addend if this is a newly created reloc, not read from an ELF
1359 if (output_bfd != (bfd *) NULL
1360 && (symbol->flags & BSF_SECTION_SYM) == 0
1361 && reloc_entry->addend == 0)
1363 reloc_entry->address += input_section->output_offset;
1364 return bfd_reloc_ok;
1367 if (output_bfd != (bfd *) NULL)
1368 relocateable = true;
1371 relocateable = false;
1372 output_bfd = symbol->section->output_section->owner;
1375 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1377 if (ret != bfd_reloc_ok)
1380 return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
1381 relocateable, data, gp);
1384 static bfd_reloc_status_type
1385 gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1389 arelent *reloc_entry;
1390 asection *input_section;
1391 boolean relocateable;
1399 if (bfd_is_com_section (symbol->section))
1402 relocation = symbol->value;
1404 relocation += symbol->section->output_section->vma;
1405 relocation += symbol->section->output_offset;
1407 if (reloc_entry->address > input_section->_cooked_size)
1408 return bfd_reloc_outofrange;
1410 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1412 /* Set val to the offset into the section or symbol. */
1413 if (reloc_entry->howto->src_mask == 0)
1415 /* This case occurs with the 64-bit MIPS ELF ABI. */
1416 val = reloc_entry->addend;
1420 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
1425 /* Adjust val for the final section location and GP value. If we
1426 are producing relocateable output, we don't want to do this for
1427 an external symbol. */
1429 || (symbol->flags & BSF_SECTION_SYM) != 0)
1430 val += relocation - gp;
1432 insn = (insn &~ 0xffff) | (val & 0xffff);
1433 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
1436 reloc_entry->address += input_section->output_offset;
1438 /* Make sure it fit in 16 bits. */
1439 if (val >= 0x8000 && val < 0xffff8000)
1440 return bfd_reloc_overflow;
1442 return bfd_reloc_ok;
1445 /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
1446 from the gp register? XXX */
1448 static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
1449 arelent *, asection *,
1450 boolean, PTR, bfd_vma));
1452 bfd_reloc_status_type
1453 _bfd_mips_elf_gprel32_reloc (abfd,
1461 arelent *reloc_entry;
1464 asection *input_section;
1466 char **error_message;
1468 boolean relocateable;
1469 bfd_reloc_status_type ret;
1472 /* If we're relocating, and this is an external symbol with no
1473 addend, we don't want to change anything. We will only have an
1474 addend if this is a newly created reloc, not read from an ELF
1476 if (output_bfd != (bfd *) NULL
1477 && (symbol->flags & BSF_SECTION_SYM) == 0
1478 && reloc_entry->addend == 0)
1480 *error_message = (char *)
1481 _("32bits gp relative relocation occurs for an external symbol");
1482 return bfd_reloc_outofrange;
1485 if (output_bfd != (bfd *) NULL)
1487 relocateable = true;
1488 gp = _bfd_get_gp_value (output_bfd);
1492 relocateable = false;
1493 output_bfd = symbol->section->output_section->owner;
1495 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1496 error_message, &gp);
1497 if (ret != bfd_reloc_ok)
1501 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1502 relocateable, data, gp);
1505 static bfd_reloc_status_type
1506 gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1510 arelent *reloc_entry;
1511 asection *input_section;
1512 boolean relocateable;
1519 if (bfd_is_com_section (symbol->section))
1522 relocation = symbol->value;
1524 relocation += symbol->section->output_section->vma;
1525 relocation += symbol->section->output_offset;
1527 if (reloc_entry->address > input_section->_cooked_size)
1528 return bfd_reloc_outofrange;
1530 if (reloc_entry->howto->src_mask == 0)
1532 /* This case arises with the 64-bit MIPS ELF ABI. */
1536 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1538 /* Set val to the offset into the section or symbol. */
1539 val += reloc_entry->addend;
1541 /* Adjust val for the final section location and GP value. If we
1542 are producing relocateable output, we don't want to do this for
1543 an external symbol. */
1545 || (symbol->flags & BSF_SECTION_SYM) != 0)
1546 val += relocation - gp;
1548 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1551 reloc_entry->address += input_section->output_offset;
1553 return bfd_reloc_ok;
1556 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1557 generated when addreses are 64 bits. The upper 32 bits are a simle
1560 static bfd_reloc_status_type
1561 mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
1562 output_bfd, error_message)
1564 arelent *reloc_entry;
1567 asection *input_section;
1569 char **error_message;
1571 bfd_reloc_status_type r;
1576 r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1577 input_section, output_bfd, error_message);
1578 if (r != bfd_reloc_continue)
1581 /* Do a normal 32 bit relocation on the lower 32 bits. */
1582 reloc32 = *reloc_entry;
1583 if (bfd_big_endian (abfd))
1584 reloc32.address += 4;
1585 reloc32.howto = &elf_mips_howto_table[R_MIPS_32];
1586 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1587 output_bfd, error_message);
1589 /* Sign extend into the upper 32 bits. */
1590 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1591 if ((val & 0x80000000) != 0)
1595 addr = reloc_entry->address;
1596 if (bfd_little_endian (abfd))
1598 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
1603 /* Handle a mips16 jump. */
1605 static bfd_reloc_status_type
1606 mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
1607 output_bfd, error_message)
1608 bfd *abfd ATTRIBUTE_UNUSED;
1609 arelent *reloc_entry;
1611 PTR data ATTRIBUTE_UNUSED;
1612 asection *input_section;
1614 char **error_message ATTRIBUTE_UNUSED;
1616 if (output_bfd != (bfd *) NULL
1617 && (symbol->flags & BSF_SECTION_SYM) == 0
1618 && reloc_entry->addend == 0)
1620 reloc_entry->address += input_section->output_offset;
1621 return bfd_reloc_ok;
1626 static boolean warned;
1629 (*_bfd_error_handler)
1630 (_("Linking mips16 objects into %s format is not supported"),
1631 bfd_get_target (input_section->output_section->owner));
1635 return bfd_reloc_undefined;
1638 /* Handle a mips16 GP relative reloc. */
1640 static bfd_reloc_status_type
1641 mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
1642 output_bfd, error_message)
1644 arelent *reloc_entry;
1647 asection *input_section;
1649 char **error_message;
1651 boolean relocateable;
1652 bfd_reloc_status_type ret;
1654 unsigned short extend, insn;
1655 unsigned long final;
1657 /* If we're relocating, and this is an external symbol with no
1658 addend, we don't want to change anything. We will only have an
1659 addend if this is a newly created reloc, not read from an ELF
1661 if (output_bfd != NULL
1662 && (symbol->flags & BSF_SECTION_SYM) == 0
1663 && reloc_entry->addend == 0)
1665 reloc_entry->address += input_section->output_offset;
1666 return bfd_reloc_ok;
1669 if (output_bfd != NULL)
1670 relocateable = true;
1673 relocateable = false;
1674 output_bfd = symbol->section->output_section->owner;
1677 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1679 if (ret != bfd_reloc_ok)
1682 if (reloc_entry->address > input_section->_cooked_size)
1683 return bfd_reloc_outofrange;
1685 /* Pick up the mips16 extend instruction and the real instruction. */
1686 extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
1687 insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
1689 /* Stuff the current addend back as a 32 bit value, do the usual
1690 relocation, and then clean up. */
1692 (((extend & 0x1f) << 11)
1695 (bfd_byte *) data + reloc_entry->address);
1697 ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
1698 relocateable, data, gp);
1700 final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1703 | ((final >> 11) & 0x1f)
1705 (bfd_byte *) data + reloc_entry->address);
1709 (bfd_byte *) data + reloc_entry->address + 2);
1714 /* Return the ISA for a MIPS e_flags value. */
1717 elf_mips_isa (flags)
1720 switch (flags & EF_MIPS_ARCH)
1734 /* Return the MACH for a MIPS e_flags value. */
1737 elf_mips_mach (flags)
1740 switch (flags & EF_MIPS_MACH)
1742 case E_MIPS_MACH_3900:
1743 return bfd_mach_mips3900;
1745 case E_MIPS_MACH_4010:
1746 return bfd_mach_mips4010;
1748 case E_MIPS_MACH_4100:
1749 return bfd_mach_mips4100;
1751 case E_MIPS_MACH_4111:
1752 return bfd_mach_mips4111;
1754 case E_MIPS_MACH_4650:
1755 return bfd_mach_mips4650;
1758 switch (flags & EF_MIPS_ARCH)
1762 return bfd_mach_mips3000;
1766 return bfd_mach_mips6000;
1770 return bfd_mach_mips4000;
1774 return bfd_mach_mips8000;
1782 /* Return printable name for ABI. */
1785 elf_mips_abi_name (abfd)
1790 if (ABI_N32_P (abfd))
1792 else if (ABI_64_P (abfd))
1795 flags = elf_elfheader (abfd)->e_flags;
1796 switch (flags & EF_MIPS_ABI)
1800 case E_MIPS_ABI_O32:
1802 case E_MIPS_ABI_O64:
1804 case E_MIPS_ABI_EABI32:
1806 case E_MIPS_ABI_EABI64:
1809 return "unknown abi";
1813 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1815 struct elf_reloc_map {
1816 bfd_reloc_code_real_type bfd_reloc_val;
1817 enum elf_mips_reloc_type elf_reloc_val;
1820 static CONST struct elf_reloc_map mips_reloc_map[] =
1822 { BFD_RELOC_NONE, R_MIPS_NONE, },
1823 { BFD_RELOC_16, R_MIPS_16 },
1824 { BFD_RELOC_32, R_MIPS_32 },
1825 { BFD_RELOC_64, R_MIPS_64 },
1826 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1827 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1828 { BFD_RELOC_LO16, R_MIPS_LO16 },
1829 { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 },
1830 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1831 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1832 { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
1833 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1834 { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 },
1835 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1836 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1837 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1838 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1839 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1840 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1841 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1842 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
1845 /* Given a BFD reloc type, return a howto structure. */
1847 static reloc_howto_type *
1848 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
1850 bfd_reloc_code_real_type code;
1854 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
1856 if (mips_reloc_map[i].bfd_reloc_val == code)
1857 return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val];
1863 bfd_set_error (bfd_error_bad_value);
1866 case BFD_RELOC_CTOR:
1867 /* We need to handle BFD_RELOC_CTOR specially.
1868 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1869 size of addresses on this architecture. */
1870 if (bfd_arch_bits_per_address (abfd) == 32)
1871 return &elf_mips_howto_table[(int) R_MIPS_32];
1873 return &elf_mips_ctor64_howto;
1875 case BFD_RELOC_MIPS16_JMP:
1876 return &elf_mips16_jump_howto;
1877 case BFD_RELOC_MIPS16_GPREL:
1878 return &elf_mips16_gprel_howto;
1879 case BFD_RELOC_VTABLE_INHERIT:
1880 return &elf_mips_gnu_vtinherit_howto;
1881 case BFD_RELOC_VTABLE_ENTRY:
1882 return &elf_mips_gnu_vtentry_howto;
1886 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
1888 static reloc_howto_type *
1889 mips_rtype_to_howto (r_type)
1890 unsigned int r_type;
1895 return &elf_mips16_jump_howto;
1897 case R_MIPS16_GPREL:
1898 return &elf_mips16_gprel_howto;
1900 case R_MIPS_GNU_VTINHERIT:
1901 return &elf_mips_gnu_vtinherit_howto;
1903 case R_MIPS_GNU_VTENTRY:
1904 return &elf_mips_gnu_vtentry_howto;
1908 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1909 return &elf_mips_howto_table[r_type];
1914 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
1917 mips_info_to_howto_rel (abfd, cache_ptr, dst)
1920 Elf32_Internal_Rel *dst;
1922 unsigned int r_type;
1924 r_type = ELF32_R_TYPE (dst->r_info);
1925 cache_ptr->howto = mips_rtype_to_howto (r_type);
1927 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1928 value for the object file. We get the addend now, rather than
1929 when we do the relocation, because the symbol manipulations done
1930 by the linker may cause us to lose track of the input BFD. */
1931 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1932 && (r_type == (unsigned int) R_MIPS_GPREL16
1933 || r_type == (unsigned int) R_MIPS_LITERAL))
1934 cache_ptr->addend = elf_gp (abfd);
1937 /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */
1940 mips_info_to_howto_rela (abfd, cache_ptr, dst)
1943 Elf32_Internal_Rela *dst;
1945 /* Since an Elf32_Internal_Rel is an initial prefix of an
1946 Elf32_Internal_Rela, we can just use mips_info_to_howto_rel
1948 mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst);
1950 /* If we ever need to do any extra processing with dst->r_addend
1951 (the field omitted in an Elf32_Internal_Rel) we can do it here. */
1954 /* A .reginfo section holds a single Elf32_RegInfo structure. These
1955 routines swap this structure in and out. They are used outside of
1956 BFD, so they are globally visible. */
1959 bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
1961 const Elf32_External_RegInfo *ex;
1964 in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask);
1965 in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]);
1966 in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]);
1967 in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]);
1968 in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]);
1969 in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value);
1973 bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
1975 const Elf32_RegInfo *in;
1976 Elf32_External_RegInfo *ex;
1978 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask,
1979 (bfd_byte *) ex->ri_gprmask);
1980 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0],
1981 (bfd_byte *) ex->ri_cprmask[0]);
1982 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1],
1983 (bfd_byte *) ex->ri_cprmask[1]);
1984 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2],
1985 (bfd_byte *) ex->ri_cprmask[2]);
1986 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3],
1987 (bfd_byte *) ex->ri_cprmask[3]);
1988 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value,
1989 (bfd_byte *) ex->ri_gp_value);
1992 /* In the 64 bit ABI, the .MIPS.options section holds register
1993 information in an Elf64_Reginfo structure. These routines swap
1994 them in and out. They are globally visible because they are used
1995 outside of BFD. These routines are here so that gas can call them
1996 without worrying about whether the 64 bit ABI has been included. */
1999 bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
2001 const Elf64_External_RegInfo *ex;
2002 Elf64_Internal_RegInfo *in;
2004 in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask);
2005 in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad);
2006 in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]);
2007 in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]);
2008 in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]);
2009 in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]);
2010 in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value);
2014 bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
2016 const Elf64_Internal_RegInfo *in;
2017 Elf64_External_RegInfo *ex;
2019 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask,
2020 (bfd_byte *) ex->ri_gprmask);
2021 bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad,
2022 (bfd_byte *) ex->ri_pad);
2023 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0],
2024 (bfd_byte *) ex->ri_cprmask[0]);
2025 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1],
2026 (bfd_byte *) ex->ri_cprmask[1]);
2027 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2],
2028 (bfd_byte *) ex->ri_cprmask[2]);
2029 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3],
2030 (bfd_byte *) ex->ri_cprmask[3]);
2031 bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value,
2032 (bfd_byte *) ex->ri_gp_value);
2035 /* Swap an entry in a .gptab section. Note that these routines rely
2036 on the equivalence of the two elements of the union. */
2039 bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
2041 const Elf32_External_gptab *ex;
2044 in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value);
2045 in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes);
2049 bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
2051 const Elf32_gptab *in;
2052 Elf32_External_gptab *ex;
2054 bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value,
2055 ex->gt_entry.gt_g_value);
2056 bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes,
2057 ex->gt_entry.gt_bytes);
2061 bfd_elf32_swap_compact_rel_out (abfd, in, ex)
2063 const Elf32_compact_rel *in;
2064 Elf32_External_compact_rel *ex;
2066 bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1);
2067 bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num);
2068 bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2);
2069 bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset);
2070 bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0);
2071 bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1);
2075 bfd_elf32_swap_crinfo_out (abfd, in, ex)
2077 const Elf32_crinfo *in;
2078 Elf32_External_crinfo *ex;
2082 l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
2083 | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
2084 | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
2085 | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
2086 bfd_h_put_32 (abfd, (bfd_vma) l, ex->info);
2087 bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst);
2088 bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr);
2091 /* Swap in an options header. */
2094 bfd_mips_elf_swap_options_in (abfd, ex, in)
2096 const Elf_External_Options *ex;
2097 Elf_Internal_Options *in;
2099 in->kind = bfd_h_get_8 (abfd, ex->kind);
2100 in->size = bfd_h_get_8 (abfd, ex->size);
2101 in->section = bfd_h_get_16 (abfd, ex->section);
2102 in->info = bfd_h_get_32 (abfd, ex->info);
2105 /* Swap out an options header. */
2108 bfd_mips_elf_swap_options_out (abfd, in, ex)
2110 const Elf_Internal_Options *in;
2111 Elf_External_Options *ex;
2113 bfd_h_put_8 (abfd, in->kind, ex->kind);
2114 bfd_h_put_8 (abfd, in->size, ex->size);
2115 bfd_h_put_16 (abfd, in->section, ex->section);
2116 bfd_h_put_32 (abfd, in->info, ex->info);
2119 /* Swap in an MSYM entry. */
2122 bfd_mips_elf_swap_msym_in (abfd, ex, in)
2124 const Elf32_External_Msym *ex;
2125 Elf32_Internal_Msym *in;
2127 in->ms_hash_value = bfd_h_get_32 (abfd, ex->ms_hash_value);
2128 in->ms_info = bfd_h_get_32 (abfd, ex->ms_info);
2131 /* Swap out an MSYM entry. */
2134 bfd_mips_elf_swap_msym_out (abfd, in, ex)
2136 const Elf32_Internal_Msym *in;
2137 Elf32_External_Msym *ex;
2139 bfd_h_put_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
2140 bfd_h_put_32 (abfd, in->ms_info, ex->ms_info);
2144 /* Determine whether a symbol is global for the purposes of splitting
2145 the symbol table into global symbols and local symbols. At least
2146 on Irix 5, this split must be between section symbols and all other
2147 symbols. On most ELF targets the split is between static symbols
2148 and externally visible symbols. */
2152 mips_elf_sym_is_global (abfd, sym)
2153 bfd *abfd ATTRIBUTE_UNUSED;
2156 return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false;
2159 /* Set the right machine number for a MIPS ELF file. This is used for
2160 both the 32-bit and the 64-bit ABI. */
2163 _bfd_mips_elf_object_p (abfd)
2166 /* Irix 5 and 6 is broken. Object file symbol tables are not always
2167 sorted correctly such that local symbols precede global symbols,
2168 and the sh_info field in the symbol table is not always right. */
2169 elf_bad_symtab (abfd) = true;
2171 bfd_default_set_arch_mach (abfd, bfd_arch_mips,
2172 elf_mips_mach (elf_elfheader (abfd)->e_flags));
2176 /* The final processing done just before writing out a MIPS ELF object
2177 file. This gets the MIPS architecture right based on the machine
2178 number. This is used by both the 32-bit and the 64-bit ABI. */
2182 _bfd_mips_elf_final_write_processing (abfd, linker)
2184 boolean linker ATTRIBUTE_UNUSED;
2188 Elf_Internal_Shdr **hdrpp;
2192 switch (bfd_get_mach (abfd))
2195 case bfd_mach_mips3000:
2196 val = E_MIPS_ARCH_1;
2199 case bfd_mach_mips3900:
2200 val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
2203 case bfd_mach_mips6000:
2204 val = E_MIPS_ARCH_2;
2207 case bfd_mach_mips4000:
2208 case bfd_mach_mips4300:
2209 val = E_MIPS_ARCH_3;
2212 case bfd_mach_mips4010:
2213 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
2216 case bfd_mach_mips4100:
2217 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
2220 case bfd_mach_mips4111:
2221 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
2224 case bfd_mach_mips4650:
2225 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
2228 case bfd_mach_mips8000:
2229 val = E_MIPS_ARCH_4;
2233 elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2234 elf_elfheader (abfd)->e_flags |= val;
2236 /* Set the sh_info field for .gptab sections and other appropriate
2237 info for each special section. */
2238 for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
2239 i < elf_elfheader (abfd)->e_shnum;
2242 switch ((*hdrpp)->sh_type)
2245 case SHT_MIPS_LIBLIST:
2246 sec = bfd_get_section_by_name (abfd, ".dynstr");
2248 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2251 case SHT_MIPS_GPTAB:
2252 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2253 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2254 BFD_ASSERT (name != NULL
2255 && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
2256 sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
2257 BFD_ASSERT (sec != NULL);
2258 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
2261 case SHT_MIPS_CONTENT:
2262 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2263 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2264 BFD_ASSERT (name != NULL
2265 && strncmp (name, ".MIPS.content",
2266 sizeof ".MIPS.content" - 1) == 0);
2267 sec = bfd_get_section_by_name (abfd,
2268 name + sizeof ".MIPS.content" - 1);
2269 BFD_ASSERT (sec != NULL);
2270 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2273 case SHT_MIPS_SYMBOL_LIB:
2274 sec = bfd_get_section_by_name (abfd, ".dynsym");
2276 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2277 sec = bfd_get_section_by_name (abfd, ".liblist");
2279 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
2282 case SHT_MIPS_EVENTS:
2283 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2284 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2285 BFD_ASSERT (name != NULL);
2286 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
2287 sec = bfd_get_section_by_name (abfd,
2288 name + sizeof ".MIPS.events" - 1);
2291 BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
2292 sizeof ".MIPS.post_rel" - 1) == 0);
2293 sec = bfd_get_section_by_name (abfd,
2295 + sizeof ".MIPS.post_rel" - 1));
2297 BFD_ASSERT (sec != NULL);
2298 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2305 /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
2308 _bfd_mips_elf_set_private_flags (abfd, flags)
2312 BFD_ASSERT (!elf_flags_init (abfd)
2313 || elf_elfheader (abfd)->e_flags == flags);
2315 elf_elfheader (abfd)->e_flags = flags;
2316 elf_flags_init (abfd) = true;
2320 /* Copy backend specific data from one object module to another */
2323 _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd)
2327 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2328 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2331 BFD_ASSERT (!elf_flags_init (obfd)
2332 || (elf_elfheader (obfd)->e_flags
2333 == elf_elfheader (ibfd)->e_flags));
2335 elf_gp (obfd) = elf_gp (ibfd);
2336 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
2337 elf_flags_init (obfd) = true;
2341 /* Merge backend specific data from an object file to the output
2342 object file when linking. */
2345 _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
2353 /* Check if we have the same endianess */
2354 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2355 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2359 if (bfd_big_endian (ibfd))
2360 msg = _("%s: compiled for a big endian system and target is little endian");
2362 msg = _("%s: compiled for a little endian system and target is big endian");
2364 (*_bfd_error_handler) (msg, bfd_get_filename (ibfd));
2366 bfd_set_error (bfd_error_wrong_format);
2370 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2371 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2374 new_flags = elf_elfheader (ibfd)->e_flags;
2375 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
2376 old_flags = elf_elfheader (obfd)->e_flags;
2378 if (! elf_flags_init (obfd))
2380 elf_flags_init (obfd) = true;
2381 elf_elfheader (obfd)->e_flags = new_flags;
2382 elf_elfheader (obfd)->e_ident[EI_CLASS]
2383 = elf_elfheader (ibfd)->e_ident[EI_CLASS];
2385 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
2386 && bfd_get_arch_info (obfd)->the_default)
2388 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
2389 bfd_get_mach (ibfd)))
2396 /* Check flag compatibility. */
2398 new_flags &= ~EF_MIPS_NOREORDER;
2399 old_flags &= ~EF_MIPS_NOREORDER;
2401 if (new_flags == old_flags)
2406 if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
2408 new_flags &= ~EF_MIPS_PIC;
2409 old_flags &= ~EF_MIPS_PIC;
2410 (*_bfd_error_handler)
2411 (_("%s: linking PIC files with non-PIC files"),
2412 bfd_get_filename (ibfd));
2416 if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
2418 new_flags &= ~EF_MIPS_CPIC;
2419 old_flags &= ~EF_MIPS_CPIC;
2420 (*_bfd_error_handler)
2421 (_("%s: linking abicalls files with non-abicalls files"),
2422 bfd_get_filename (ibfd));
2426 /* Compare the ISA's. */
2427 if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
2428 != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
2430 int new_mach = new_flags & EF_MIPS_MACH;
2431 int old_mach = old_flags & EF_MIPS_MACH;
2432 int new_isa = elf_mips_isa (new_flags);
2433 int old_isa = elf_mips_isa (old_flags);
2435 /* If either has no machine specified, just compare the general isa's.
2436 Some combinations of machines are ok, if the isa's match. */
2439 || new_mach == old_mach
2442 /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3
2443 and -mips4 code. They will normally use the same data sizes and
2444 calling conventions. */
2446 if ((new_isa == 1 || new_isa == 2)
2447 ? (old_isa != 1 && old_isa != 2)
2448 : (old_isa == 1 || old_isa == 2))
2450 (*_bfd_error_handler)
2451 (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
2452 bfd_get_filename (ibfd), new_isa, old_isa);
2459 (*_bfd_error_handler)
2460 (_("%s: ISA mismatch (%d) with previous modules (%d)"),
2461 bfd_get_filename (ibfd),
2462 elf_mips_mach (new_flags),
2463 elf_mips_mach (old_flags));
2467 new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2468 old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2471 /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
2472 does set EI_CLASS differently from any 32-bit ABI. */
2473 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
2474 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
2475 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
2477 /* Only error if both are set (to different values). */
2478 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
2479 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
2480 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
2482 (*_bfd_error_handler)
2483 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
2484 bfd_get_filename (ibfd),
2485 elf_mips_abi_name (ibfd),
2486 elf_mips_abi_name (obfd));
2489 new_flags &= ~EF_MIPS_ABI;
2490 old_flags &= ~EF_MIPS_ABI;
2493 /* Warn about any other mismatches */
2494 if (new_flags != old_flags)
2496 (*_bfd_error_handler)
2497 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
2498 bfd_get_filename (ibfd), (unsigned long) new_flags,
2499 (unsigned long) old_flags);
2505 bfd_set_error (bfd_error_bad_value);
2513 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
2517 FILE *file = (FILE *) ptr;
2519 BFD_ASSERT (abfd != NULL && ptr != NULL);
2521 /* Print normal ELF private data. */
2522 _bfd_elf_print_private_bfd_data (abfd, ptr);
2524 /* xgettext:c-format */
2525 fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
2527 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
2528 fprintf (file, _ (" [abi=O32]"));
2529 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
2530 fprintf (file, _ (" [abi=O64]"));
2531 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
2532 fprintf (file, _ (" [abi=EABI32]"));
2533 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
2534 fprintf (file, _ (" [abi=EABI64]"));
2535 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
2536 fprintf (file, _ (" [abi unknown]"));
2537 else if (ABI_N32_P (abfd))
2538 fprintf (file, _ (" [abi=N32]"));
2539 else if (ABI_64_P (abfd))
2540 fprintf (file, _ (" [abi=64]"));
2542 fprintf (file, _ (" [no abi set]"));
2544 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
2545 fprintf (file, _ (" [mips1]"));
2546 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
2547 fprintf (file, _ (" [mips2]"));
2548 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
2549 fprintf (file, _ (" [mips3]"));
2550 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
2551 fprintf (file, _ (" [mips4]"));
2553 fprintf (file, _ (" [unknown ISA]"));
2555 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
2556 fprintf (file, _ (" [32bitmode]"));
2558 fprintf (file, _ (" [not 32bitmode]"));
2565 /* Handle a MIPS specific section when reading an object file. This
2566 is called when elfcode.h finds a section with an unknown type.
2567 This routine supports both the 32-bit and 64-bit ELF ABI.
2569 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
2573 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
2575 Elf_Internal_Shdr *hdr;
2580 /* There ought to be a place to keep ELF backend specific flags, but
2581 at the moment there isn't one. We just keep track of the
2582 sections by their name, instead. Fortunately, the ABI gives
2583 suggested names for all the MIPS specific sections, so we will
2584 probably get away with this. */
2585 switch (hdr->sh_type)
2587 case SHT_MIPS_LIBLIST:
2588 if (strcmp (name, ".liblist") != 0)
2592 if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
2595 case SHT_MIPS_CONFLICT:
2596 if (strcmp (name, ".conflict") != 0)
2599 case SHT_MIPS_GPTAB:
2600 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
2603 case SHT_MIPS_UCODE:
2604 if (strcmp (name, ".ucode") != 0)
2607 case SHT_MIPS_DEBUG:
2608 if (strcmp (name, ".mdebug") != 0)
2610 flags = SEC_DEBUGGING;
2612 case SHT_MIPS_REGINFO:
2613 if (strcmp (name, ".reginfo") != 0
2614 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
2616 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
2618 case SHT_MIPS_IFACE:
2619 if (strcmp (name, ".MIPS.interfaces") != 0)
2622 case SHT_MIPS_CONTENT:
2623 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
2626 case SHT_MIPS_OPTIONS:
2627 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
2630 case SHT_MIPS_DWARF:
2631 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
2634 case SHT_MIPS_SYMBOL_LIB:
2635 if (strcmp (name, ".MIPS.symlib") != 0)
2638 case SHT_MIPS_EVENTS:
2639 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
2640 && strncmp (name, ".MIPS.post_rel",
2641 sizeof ".MIPS.post_rel" - 1) != 0)
2648 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2653 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2654 (bfd_get_section_flags (abfd,
2660 /* FIXME: We should record sh_info for a .gptab section. */
2662 /* For a .reginfo section, set the gp value in the tdata information
2663 from the contents of this section. We need the gp value while
2664 processing relocs, so we just get it now. The .reginfo section
2665 is not used in the 64-bit MIPS ELF ABI. */
2666 if (hdr->sh_type == SHT_MIPS_REGINFO)
2668 Elf32_External_RegInfo ext;
2671 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
2672 (file_ptr) 0, sizeof ext))
2674 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
2675 elf_gp (abfd) = s.ri_gp_value;
2678 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
2679 set the gp value based on what we find. We may see both
2680 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
2681 they should agree. */
2682 if (hdr->sh_type == SHT_MIPS_OPTIONS)
2684 bfd_byte *contents, *l, *lend;
2686 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
2687 if (contents == NULL)
2689 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
2690 (file_ptr) 0, hdr->sh_size))
2696 lend = contents + hdr->sh_size;
2697 while (l + sizeof (Elf_External_Options) <= lend)
2699 Elf_Internal_Options intopt;
2701 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
2703 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
2705 Elf64_Internal_RegInfo intreg;
2707 bfd_mips_elf64_swap_reginfo_in
2709 ((Elf64_External_RegInfo *)
2710 (l + sizeof (Elf_External_Options))),
2712 elf_gp (abfd) = intreg.ri_gp_value;
2714 else if (intopt.kind == ODK_REGINFO)
2716 Elf32_RegInfo intreg;
2718 bfd_mips_elf32_swap_reginfo_in
2720 ((Elf32_External_RegInfo *)
2721 (l + sizeof (Elf_External_Options))),
2723 elf_gp (abfd) = intreg.ri_gp_value;
2733 /* Set the correct type for a MIPS ELF section. We do this by the
2734 section name, which is a hack, but ought to work. This routine is
2735 used by both the 32-bit and the 64-bit ABI. */
2738 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
2740 Elf32_Internal_Shdr *hdr;
2743 register const char *name;
2745 name = bfd_get_section_name (abfd, sec);
2747 if (strcmp (name, ".liblist") == 0)
2749 hdr->sh_type = SHT_MIPS_LIBLIST;
2750 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
2751 /* The sh_link field is set in final_write_processing. */
2753 else if (strcmp (name, ".conflict") == 0)
2754 hdr->sh_type = SHT_MIPS_CONFLICT;
2755 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
2757 hdr->sh_type = SHT_MIPS_GPTAB;
2758 hdr->sh_entsize = sizeof (Elf32_External_gptab);
2759 /* The sh_info field is set in final_write_processing. */
2761 else if (strcmp (name, ".ucode") == 0)
2762 hdr->sh_type = SHT_MIPS_UCODE;
2763 else if (strcmp (name, ".mdebug") == 0)
2765 hdr->sh_type = SHT_MIPS_DEBUG;
2766 /* In a shared object on Irix 5.3, the .mdebug section has an
2767 entsize of 0. FIXME: Does this matter? */
2768 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
2769 hdr->sh_entsize = 0;
2771 hdr->sh_entsize = 1;
2773 else if (strcmp (name, ".reginfo") == 0)
2775 hdr->sh_type = SHT_MIPS_REGINFO;
2776 /* In a shared object on Irix 5.3, the .reginfo section has an
2777 entsize of 0x18. FIXME: Does this matter? */
2778 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
2779 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
2781 hdr->sh_entsize = 1;
2783 else if (SGI_COMPAT (abfd)
2784 && (strcmp (name, ".hash") == 0
2785 || strcmp (name, ".dynamic") == 0
2786 || strcmp (name, ".dynstr") == 0))
2788 hdr->sh_entsize = 0;
2790 /* This isn't how the Irix 6 linker behaves. */
2791 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
2794 else if (strcmp (name, ".got") == 0
2795 || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
2796 || strcmp (name, ".sdata") == 0
2797 || strcmp (name, ".sbss") == 0
2798 || strcmp (name, ".lit4") == 0
2799 || strcmp (name, ".lit8") == 0)
2800 hdr->sh_flags |= SHF_MIPS_GPREL;
2801 else if (strcmp (name, ".MIPS.interfaces") == 0)
2803 hdr->sh_type = SHT_MIPS_IFACE;
2804 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2806 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
2808 hdr->sh_type = SHT_MIPS_CONTENT;
2809 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2810 /* The sh_info field is set in final_write_processing. */
2812 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
2814 hdr->sh_type = SHT_MIPS_OPTIONS;
2815 hdr->sh_entsize = 1;
2816 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2818 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
2819 hdr->sh_type = SHT_MIPS_DWARF;
2820 else if (strcmp (name, ".MIPS.symlib") == 0)
2822 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
2823 /* The sh_link and sh_info fields are set in
2824 final_write_processing. */
2826 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
2827 || strncmp (name, ".MIPS.post_rel",
2828 sizeof ".MIPS.post_rel" - 1) == 0)
2830 hdr->sh_type = SHT_MIPS_EVENTS;
2831 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2832 /* The sh_link field is set in final_write_processing. */
2834 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
2836 hdr->sh_type = SHT_MIPS_MSYM;
2837 hdr->sh_flags |= SHF_ALLOC;
2838 hdr->sh_entsize = 8;
2841 /* The generic elf_fake_sections will set up REL_HDR using the
2842 default kind of relocations. But, we may actually need both
2843 kinds of relocations, so we set up the second header here. */
2844 if ((sec->flags & SEC_RELOC) != 0)
2846 struct bfd_elf_section_data *esd;
2848 esd = elf_section_data (sec);
2849 BFD_ASSERT (esd->rel_hdr2 == NULL);
2851 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr));
2854 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
2855 !elf_section_data (sec)->use_rela_p);
2861 /* Given a BFD section, try to locate the corresponding ELF section
2862 index. This is used by both the 32-bit and the 64-bit ABI.
2863 Actually, it's not clear to me that the 64-bit ABI supports these,
2864 but for non-PIC objects we will certainly want support for at least
2865 the .scommon section. */
2868 _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
2869 bfd *abfd ATTRIBUTE_UNUSED;
2870 Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED;
2874 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2876 *retval = SHN_MIPS_SCOMMON;
2879 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
2881 *retval = SHN_MIPS_ACOMMON;
2887 /* When are writing out the .options or .MIPS.options section,
2888 remember the bytes we are writing out, so that we can install the
2889 GP value in the section_processing routine. */
2892 _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
2897 bfd_size_type count;
2899 if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
2903 if (elf_section_data (section) == NULL)
2905 section->used_by_bfd =
2906 (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
2907 if (elf_section_data (section) == NULL)
2910 c = (bfd_byte *) elf_section_data (section)->tdata;
2915 if (section->_cooked_size != 0)
2916 size = section->_cooked_size;
2918 size = section->_raw_size;
2919 c = (bfd_byte *) bfd_zalloc (abfd, size);
2922 elf_section_data (section)->tdata = (PTR) c;
2925 memcpy (c + offset, location, count);
2928 return _bfd_elf_set_section_contents (abfd, section, location, offset,
2932 /* Work over a section just before writing it out. This routine is
2933 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
2934 sections that need the SHF_MIPS_GPREL flag by name; there has to be
2938 _bfd_mips_elf_section_processing (abfd, hdr)
2940 Elf_Internal_Shdr *hdr;
2942 if (hdr->sh_type == SHT_MIPS_REGINFO
2943 && hdr->sh_size > 0)
2947 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
2948 BFD_ASSERT (hdr->contents == NULL);
2951 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
2954 bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf);
2955 if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4)
2959 if (hdr->sh_type == SHT_MIPS_OPTIONS
2960 && hdr->bfd_section != NULL
2961 && elf_section_data (hdr->bfd_section) != NULL
2962 && elf_section_data (hdr->bfd_section)->tdata != NULL)
2964 bfd_byte *contents, *l, *lend;
2966 /* We stored the section contents in the elf_section_data tdata
2967 field in the set_section_contents routine. We save the
2968 section contents so that we don't have to read them again.
2969 At this point we know that elf_gp is set, so we can look
2970 through the section contents to see if there is an
2971 ODK_REGINFO structure. */
2973 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
2975 lend = contents + hdr->sh_size;
2976 while (l + sizeof (Elf_External_Options) <= lend)
2978 Elf_Internal_Options intopt;
2980 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
2982 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
2989 + sizeof (Elf_External_Options)
2990 + (sizeof (Elf64_External_RegInfo) - 8)),
2993 bfd_h_put_64 (abfd, elf_gp (abfd), buf);
2994 if (bfd_write (buf, 1, 8, abfd) != 8)
2997 else if (intopt.kind == ODK_REGINFO)
3004 + sizeof (Elf_External_Options)
3005 + (sizeof (Elf32_External_RegInfo) - 4)),
3008 bfd_h_put_32 (abfd, elf_gp (abfd), buf);
3009 if (bfd_write (buf, 1, 4, abfd) != 4)
3016 if (hdr->bfd_section != NULL)
3018 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3020 if (strcmp (name, ".sdata") == 0
3021 || strcmp (name, ".lit8") == 0
3022 || strcmp (name, ".lit4") == 0)
3024 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3025 hdr->sh_type = SHT_PROGBITS;
3027 else if (strcmp (name, ".sbss") == 0)
3029 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3030 hdr->sh_type = SHT_NOBITS;
3032 else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
3034 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3035 hdr->sh_type = SHT_PROGBITS;
3037 else if (strcmp (name, ".compact_rel") == 0)
3040 hdr->sh_type = SHT_PROGBITS;
3042 else if (strcmp (name, ".rtproc") == 0)
3044 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3046 unsigned int adjust;
3048 adjust = hdr->sh_size % hdr->sh_addralign;
3050 hdr->sh_size += hdr->sh_addralign - adjust;
3059 /* MIPS ELF uses two common sections. One is the usual one, and the
3060 other is for small objects. All the small objects are kept
3061 together, and then referenced via the gp pointer, which yields
3062 faster assembler code. This is what we use for the small common
3063 section. This approach is copied from ecoff.c. */
3064 static asection mips_elf_scom_section;
3065 static asymbol mips_elf_scom_symbol;
3066 static asymbol *mips_elf_scom_symbol_ptr;
3068 /* MIPS ELF also uses an acommon section, which represents an
3069 allocated common symbol which may be overridden by a
3070 definition in a shared library. */
3071 static asection mips_elf_acom_section;
3072 static asymbol mips_elf_acom_symbol;
3073 static asymbol *mips_elf_acom_symbol_ptr;
3075 /* The Irix 5 support uses two virtual sections, which represent
3076 text/data symbols defined in dynamic objects. */
3077 static asection mips_elf_text_section;
3078 static asection *mips_elf_text_section_ptr;
3079 static asymbol mips_elf_text_symbol;
3080 static asymbol *mips_elf_text_symbol_ptr;
3082 static asection mips_elf_data_section;
3083 static asection *mips_elf_data_section_ptr;
3084 static asymbol mips_elf_data_symbol;
3085 static asymbol *mips_elf_data_symbol_ptr;
3087 /* Handle the special MIPS section numbers that a symbol may use.
3088 This is used for both the 32-bit and the 64-bit ABI. */
3091 _bfd_mips_elf_symbol_processing (abfd, asym)
3095 elf_symbol_type *elfsym;
3097 elfsym = (elf_symbol_type *) asym;
3098 switch (elfsym->internal_elf_sym.st_shndx)
3100 case SHN_MIPS_ACOMMON:
3101 /* This section is used in a dynamically linked executable file.
3102 It is an allocated common section. The dynamic linker can
3103 either resolve these symbols to something in a shared
3104 library, or it can just leave them here. For our purposes,
3105 we can consider these symbols to be in a new section. */
3106 if (mips_elf_acom_section.name == NULL)
3108 /* Initialize the acommon section. */
3109 mips_elf_acom_section.name = ".acommon";
3110 mips_elf_acom_section.flags = SEC_ALLOC;
3111 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3112 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3113 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3114 mips_elf_acom_symbol.name = ".acommon";
3115 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3116 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3117 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3119 asym->section = &mips_elf_acom_section;
3123 /* Common symbols less than the GP size are automatically
3124 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3125 if (asym->value > elf_gp_size (abfd)
3126 || IRIX_COMPAT (abfd) == ict_irix6)
3129 case SHN_MIPS_SCOMMON:
3130 if (mips_elf_scom_section.name == NULL)
3132 /* Initialize the small common section. */
3133 mips_elf_scom_section.name = ".scommon";
3134 mips_elf_scom_section.flags = SEC_IS_COMMON;
3135 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3136 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3137 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3138 mips_elf_scom_symbol.name = ".scommon";
3139 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3140 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3141 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3143 asym->section = &mips_elf_scom_section;
3144 asym->value = elfsym->internal_elf_sym.st_size;
3147 case SHN_MIPS_SUNDEFINED:
3148 asym->section = bfd_und_section_ptr;
3151 #if 0 /* for SGI_COMPAT */
3153 asym->section = mips_elf_text_section_ptr;
3157 asym->section = mips_elf_data_section_ptr;
3163 /* When creating an Irix 5 executable, we need REGINFO and RTPROC
3167 _bfd_mips_elf_additional_program_headers (abfd)
3173 if (!SGI_COMPAT (abfd))
3176 /* See if we need a PT_MIPS_REGINFO segment. */
3177 s = bfd_get_section_by_name (abfd, ".reginfo");
3178 if (s && (s->flags & SEC_LOAD))
3181 /* See if we need a PT_MIPS_OPTIONS segment. */
3182 if (IRIX_COMPAT (abfd) == ict_irix6
3183 && bfd_get_section_by_name (abfd,
3184 MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
3187 /* See if we need a PT_MIPS_RTPROC segment. */
3188 if (IRIX_COMPAT (abfd) == ict_irix5
3189 && bfd_get_section_by_name (abfd, ".dynamic")
3190 && bfd_get_section_by_name (abfd, ".mdebug"))
3196 /* Modify the segment map for an Irix 5 executable. */
3199 _bfd_mips_elf_modify_segment_map (abfd)
3203 struct elf_segment_map *m, **pm;
3205 if (! SGI_COMPAT (abfd))
3208 /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
3210 s = bfd_get_section_by_name (abfd, ".reginfo");
3211 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3213 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3214 if (m->p_type == PT_MIPS_REGINFO)
3218 m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
3222 m->p_type = PT_MIPS_REGINFO;
3226 /* We want to put it after the PHDR and INTERP segments. */
3227 pm = &elf_tdata (abfd)->segment_map;
3229 && ((*pm)->p_type == PT_PHDR
3230 || (*pm)->p_type == PT_INTERP))
3238 /* For IRIX 6, we don't have .mdebug sections, nor does anything but
3239 .dynamic end up in PT_DYNAMIC. However, we do have to insert a
3240 PT_OPTIONS segement immediately following the program header
3242 if (IRIX_COMPAT (abfd) == ict_irix6)
3246 for (s = abfd->sections; s; s = s->next)
3247 if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
3252 struct elf_segment_map *options_segment;
3254 /* Usually, there's a program header table. But, sometimes
3255 there's not (like when running the `ld' testsuite). So,
3256 if there's no program header table, we just put the
3257 options segement at the end. */
3258 for (pm = &elf_tdata (abfd)->segment_map;
3261 if ((*pm)->p_type == PT_PHDR)
3264 options_segment = bfd_zalloc (abfd,
3265 sizeof (struct elf_segment_map));
3266 options_segment->next = *pm;
3267 options_segment->p_type = PT_MIPS_OPTIONS;
3268 options_segment->p_flags = PF_R;
3269 options_segment->p_flags_valid = true;
3270 options_segment->count = 1;
3271 options_segment->sections[0] = s;
3272 *pm = options_segment;
3277 /* If there are .dynamic and .mdebug sections, we make a room
3278 for the RTPROC header. FIXME: Rewrite without section names. */
3279 if (bfd_get_section_by_name (abfd, ".interp") == NULL
3280 && bfd_get_section_by_name (abfd, ".dynamic") != NULL
3281 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
3283 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3284 if (m->p_type == PT_MIPS_RTPROC)
3288 m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
3292 m->p_type = PT_MIPS_RTPROC;
3294 s = bfd_get_section_by_name (abfd, ".rtproc");
3299 m->p_flags_valid = 1;
3307 /* We want to put it after the DYNAMIC segment. */
3308 pm = &elf_tdata (abfd)->segment_map;
3309 while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
3319 /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
3320 .dynstr, .dynsym, and .hash sections, and everything in
3322 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
3323 if ((*pm)->p_type == PT_DYNAMIC)
3328 && strcmp (m->sections[0]->name, ".dynamic") == 0)
3330 static const char *sec_names[] =
3331 { ".dynamic", ".dynstr", ".dynsym", ".hash" };
3334 struct elf_segment_map *n;
3338 for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
3340 s = bfd_get_section_by_name (abfd, sec_names[i]);
3341 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3347 sz = s->_cooked_size;
3350 if (high < s->vma + sz)
3356 for (s = abfd->sections; s != NULL; s = s->next)
3357 if ((s->flags & SEC_LOAD) != 0
3360 + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
3364 n = ((struct elf_segment_map *)
3365 bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *)));
3372 for (s = abfd->sections; s != NULL; s = s->next)
3374 if ((s->flags & SEC_LOAD) != 0
3377 + (s->_cooked_size != 0 ?
3378 s->_cooked_size : s->_raw_size))
3393 /* The structure of the runtime procedure descriptor created by the
3394 loader for use by the static exception system. */
3396 typedef struct runtime_pdr {
3397 bfd_vma adr; /* memory address of start of procedure */
3398 long regmask; /* save register mask */
3399 long regoffset; /* save register offset */
3400 long fregmask; /* save floating point register mask */
3401 long fregoffset; /* save floating point register offset */
3402 long frameoffset; /* frame size */
3403 short framereg; /* frame pointer register */
3404 short pcreg; /* offset or reg of return pc */
3405 long irpss; /* index into the runtime string table */
3407 struct exception_info *exception_info;/* pointer to exception array */
3409 #define cbRPDR sizeof(RPDR)
3410 #define rpdNil ((pRPDR) 0)
3412 /* Swap RPDR (runtime procedure table entry) for output. */
3414 static void ecoff_swap_rpdr_out
3415 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
3418 ecoff_swap_rpdr_out (abfd, in, ex)
3421 struct rpdr_ext *ex;
3423 /* ecoff_put_off was defined in ecoffswap.h. */
3424 ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr);
3425 bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask);
3426 bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset);
3427 bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask);
3428 bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset);
3429 bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset);
3431 bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg);
3432 bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg);
3434 bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss);
3436 ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info);
3440 /* Read ECOFF debugging information from a .mdebug section into a
3441 ecoff_debug_info structure. */
3444 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
3447 struct ecoff_debug_info *debug;
3450 const struct ecoff_debug_swap *swap;
3451 char *ext_hdr = NULL;
3453 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3454 memset (debug, 0, sizeof(*debug));
3456 ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
3457 if (ext_hdr == NULL && swap->external_hdr_size != 0)
3460 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
3461 swap->external_hdr_size)
3465 symhdr = &debug->symbolic_header;
3466 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
3468 /* The symbolic header contains absolute file offsets and sizes to
3470 #define READ(ptr, offset, count, size, type) \
3471 if (symhdr->count == 0) \
3472 debug->ptr = NULL; \
3475 debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \
3476 if (debug->ptr == NULL) \
3477 goto error_return; \
3478 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
3479 || (bfd_read (debug->ptr, size, symhdr->count, \
3480 abfd) != size * symhdr->count)) \
3481 goto error_return; \
3484 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
3485 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
3486 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
3487 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
3488 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
3489 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
3491 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
3492 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
3493 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
3494 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
3495 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
3499 debug->adjust = NULL;
3504 if (ext_hdr != NULL)
3506 if (debug->line != NULL)
3508 if (debug->external_dnr != NULL)
3509 free (debug->external_dnr);
3510 if (debug->external_pdr != NULL)
3511 free (debug->external_pdr);
3512 if (debug->external_sym != NULL)
3513 free (debug->external_sym);
3514 if (debug->external_opt != NULL)
3515 free (debug->external_opt);
3516 if (debug->external_aux != NULL)
3517 free (debug->external_aux);
3518 if (debug->ss != NULL)
3520 if (debug->ssext != NULL)
3521 free (debug->ssext);
3522 if (debug->external_fdr != NULL)
3523 free (debug->external_fdr);
3524 if (debug->external_rfd != NULL)
3525 free (debug->external_rfd);
3526 if (debug->external_ext != NULL)
3527 free (debug->external_ext);
3531 /* MIPS ELF local labels start with '$', not 'L'. */
3535 mips_elf_is_local_label_name (abfd, name)
3542 /* On Irix 6, the labels go back to starting with '.', so we accept
3543 the generic ELF local label syntax as well. */
3544 return _bfd_elf_is_local_label_name (abfd, name);
3547 /* MIPS ELF uses a special find_nearest_line routine in order the
3548 handle the ECOFF debugging information. */
3550 struct mips_elf_find_line
3552 struct ecoff_debug_info d;
3553 struct ecoff_find_line i;
3557 _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
3558 functionname_ptr, line_ptr)
3563 const char **filename_ptr;
3564 const char **functionname_ptr;
3565 unsigned int *line_ptr;
3569 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
3570 filename_ptr, functionname_ptr,
3574 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
3575 filename_ptr, functionname_ptr,
3577 ABI_64_P (abfd) ? 8 : 0))
3580 msec = bfd_get_section_by_name (abfd, ".mdebug");
3584 struct mips_elf_find_line *fi;
3585 const struct ecoff_debug_swap * const swap =
3586 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3588 /* If we are called during a link, mips_elf_final_link may have
3589 cleared the SEC_HAS_CONTENTS field. We force it back on here
3590 if appropriate (which it normally will be). */
3591 origflags = msec->flags;
3592 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
3593 msec->flags |= SEC_HAS_CONTENTS;
3595 fi = elf_tdata (abfd)->find_line_info;
3598 bfd_size_type external_fdr_size;
3601 struct fdr *fdr_ptr;
3603 fi = ((struct mips_elf_find_line *)
3604 bfd_zalloc (abfd, sizeof (struct mips_elf_find_line)));
3607 msec->flags = origflags;
3611 if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
3613 msec->flags = origflags;
3617 /* Swap in the FDR information. */
3618 fi->d.fdr = ((struct fdr *)
3620 (fi->d.symbolic_header.ifdMax *
3621 sizeof (struct fdr))));
3622 if (fi->d.fdr == NULL)
3624 msec->flags = origflags;
3627 external_fdr_size = swap->external_fdr_size;
3628 fdr_ptr = fi->d.fdr;
3629 fraw_src = (char *) fi->d.external_fdr;
3630 fraw_end = (fraw_src
3631 + fi->d.symbolic_header.ifdMax * external_fdr_size);
3632 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
3633 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
3635 elf_tdata (abfd)->find_line_info = fi;
3637 /* Note that we don't bother to ever free this information.
3638 find_nearest_line is either called all the time, as in
3639 objdump -l, so the information should be saved, or it is
3640 rarely called, as in ld error messages, so the memory
3641 wasted is unimportant. Still, it would probably be a
3642 good idea for free_cached_info to throw it away. */
3645 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
3646 &fi->i, filename_ptr, functionname_ptr,
3649 msec->flags = origflags;
3653 msec->flags = origflags;
3656 /* Fall back on the generic ELF find_nearest_line routine. */
3658 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
3659 filename_ptr, functionname_ptr,
3663 /* The mips16 compiler uses a couple of special sections to handle
3664 floating point arguments.
3666 Section names that look like .mips16.fn.FNNAME contain stubs that
3667 copy floating point arguments from the fp regs to the gp regs and
3668 then jump to FNNAME. If any 32 bit function calls FNNAME, the
3669 call should be redirected to the stub instead. If no 32 bit
3670 function calls FNNAME, the stub should be discarded. We need to
3671 consider any reference to the function, not just a call, because
3672 if the address of the function is taken we will need the stub,
3673 since the address might be passed to a 32 bit function.
3675 Section names that look like .mips16.call.FNNAME contain stubs
3676 that copy floating point arguments from the gp regs to the fp
3677 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
3678 then any 16 bit function that calls FNNAME should be redirected
3679 to the stub instead. If FNNAME is not a 32 bit function, the
3680 stub should be discarded.
3682 .mips16.call.fp.FNNAME sections are similar, but contain stubs
3683 which call FNNAME and then copy the return value from the fp regs
3684 to the gp regs. These stubs store the return value in $18 while
3685 calling FNNAME; any function which might call one of these stubs
3686 must arrange to save $18 around the call. (This case is not
3687 needed for 32 bit functions that call 16 bit functions, because
3688 16 bit functions always return floating point values in both
3691 Note that in all cases FNNAME might be defined statically.
3692 Therefore, FNNAME is not used literally. Instead, the relocation
3693 information will indicate which symbol the section is for.
3695 We record any stubs that we find in the symbol table. */
3697 #define FN_STUB ".mips16.fn."
3698 #define CALL_STUB ".mips16.call."
3699 #define CALL_FP_STUB ".mips16.call.fp."
3701 /* MIPS ELF linker hash table. */
3703 struct mips_elf_link_hash_table
3705 struct elf_link_hash_table root;
3707 /* We no longer use this. */
3708 /* String section indices for the dynamic section symbols. */
3709 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
3711 /* The number of .rtproc entries. */
3712 bfd_size_type procedure_count;
3713 /* The size of the .compact_rel section (if SGI_COMPAT). */
3714 bfd_size_type compact_rel_size;
3715 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
3716 entry is set to the address of __rld_obj_head as in Irix 5. */
3717 boolean use_rld_obj_head;
3718 /* This is the value of the __rld_map or __rld_obj_head symbol. */
3720 /* This is set if we see any mips16 stub sections. */
3721 boolean mips16_stubs_seen;
3724 /* Look up an entry in a MIPS ELF linker hash table. */
3726 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
3727 ((struct mips_elf_link_hash_entry *) \
3728 elf_link_hash_lookup (&(table)->root, (string), (create), \
3731 /* Traverse a MIPS ELF linker hash table. */
3733 #define mips_elf_link_hash_traverse(table, func, info) \
3734 (elf_link_hash_traverse \
3736 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
3739 /* Get the MIPS ELF linker hash table from a link_info structure. */
3741 #define mips_elf_hash_table(p) \
3742 ((struct mips_elf_link_hash_table *) ((p)->hash))
3744 static boolean mips_elf_output_extsym
3745 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
3747 /* Create an entry in a MIPS ELF linker hash table. */
3749 static struct bfd_hash_entry *
3750 mips_elf_link_hash_newfunc (entry, table, string)
3751 struct bfd_hash_entry *entry;
3752 struct bfd_hash_table *table;
3755 struct mips_elf_link_hash_entry *ret =
3756 (struct mips_elf_link_hash_entry *) entry;
3758 /* Allocate the structure if it has not already been allocated by a
3760 if (ret == (struct mips_elf_link_hash_entry *) NULL)
3761 ret = ((struct mips_elf_link_hash_entry *)
3762 bfd_hash_allocate (table,
3763 sizeof (struct mips_elf_link_hash_entry)));
3764 if (ret == (struct mips_elf_link_hash_entry *) NULL)
3765 return (struct bfd_hash_entry *) ret;
3767 /* Call the allocation method of the superclass. */
3768 ret = ((struct mips_elf_link_hash_entry *)
3769 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3771 if (ret != (struct mips_elf_link_hash_entry *) NULL)
3773 /* Set local fields. */
3774 memset (&ret->esym, 0, sizeof (EXTR));
3775 /* We use -2 as a marker to indicate that the information has
3776 not been set. -1 means there is no associated ifd. */
3778 ret->possibly_dynamic_relocs = 0;
3779 ret->min_dyn_reloc_index = 0;
3780 ret->fn_stub = NULL;
3781 ret->need_fn_stub = false;
3782 ret->call_stub = NULL;
3783 ret->call_fp_stub = NULL;
3786 return (struct bfd_hash_entry *) ret;
3789 /* Create a MIPS ELF linker hash table. */
3791 struct bfd_link_hash_table *
3792 _bfd_mips_elf_link_hash_table_create (abfd)
3795 struct mips_elf_link_hash_table *ret;
3797 ret = ((struct mips_elf_link_hash_table *)
3798 bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table)));
3799 if (ret == (struct mips_elf_link_hash_table *) NULL)
3802 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3803 mips_elf_link_hash_newfunc))
3805 bfd_release (abfd, ret);
3810 /* We no longer use this. */
3811 for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
3812 ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
3814 ret->procedure_count = 0;
3815 ret->compact_rel_size = 0;
3816 ret->use_rld_obj_head = false;
3818 ret->mips16_stubs_seen = false;
3820 return &ret->root.root;
3823 /* Hook called by the linker routine which adds symbols from an object
3824 file. We must handle the special MIPS section numbers here. */
3828 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
3830 struct bfd_link_info *info;
3831 const Elf_Internal_Sym *sym;
3833 flagword *flagsp ATTRIBUTE_UNUSED;
3837 if (SGI_COMPAT (abfd)
3838 && (abfd->flags & DYNAMIC) != 0
3839 && strcmp (*namep, "_rld_new_interface") == 0)
3841 /* Skip Irix 5 rld entry name. */
3846 switch (sym->st_shndx)
3849 /* Common symbols less than the GP size are automatically
3850 treated as SHN_MIPS_SCOMMON symbols. */
3851 if (sym->st_size > elf_gp_size (abfd)
3852 || IRIX_COMPAT (abfd) == ict_irix6)
3855 case SHN_MIPS_SCOMMON:
3856 *secp = bfd_make_section_old_way (abfd, ".scommon");
3857 (*secp)->flags |= SEC_IS_COMMON;
3858 *valp = sym->st_size;
3862 /* This section is used in a shared object. */
3863 if (mips_elf_text_section_ptr == NULL)
3865 /* Initialize the section. */
3866 mips_elf_text_section.name = ".text";
3867 mips_elf_text_section.flags = SEC_NO_FLAGS;
3868 mips_elf_text_section.output_section = NULL;
3869 mips_elf_text_section.symbol = &mips_elf_text_symbol;
3870 mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr;
3871 mips_elf_text_symbol.name = ".text";
3872 mips_elf_text_symbol.flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3873 mips_elf_text_symbol.section = &mips_elf_text_section;
3874 mips_elf_text_symbol_ptr = &mips_elf_text_symbol;
3875 mips_elf_text_section_ptr = &mips_elf_text_section;
3877 /* This code used to do *secp = bfd_und_section_ptr if
3878 info->shared. I don't know why, and that doesn't make sense,
3879 so I took it out. */
3880 *secp = mips_elf_text_section_ptr;
3883 case SHN_MIPS_ACOMMON:
3884 /* Fall through. XXX Can we treat this as allocated data? */
3886 /* This section is used in a shared object. */
3887 if (mips_elf_data_section_ptr == NULL)
3889 /* Initialize the section. */
3890 mips_elf_data_section.name = ".data";
3891 mips_elf_data_section.flags = SEC_NO_FLAGS;
3892 mips_elf_data_section.output_section = NULL;
3893 mips_elf_data_section.symbol = &mips_elf_data_symbol;
3894 mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr;
3895 mips_elf_data_symbol.name = ".data";
3896 mips_elf_data_symbol.flags = BSF_SECTION_SYM | BSF_DYNAMIC;
3897 mips_elf_data_symbol.section = &mips_elf_data_section;
3898 mips_elf_data_symbol_ptr = &mips_elf_data_symbol;
3899 mips_elf_data_section_ptr = &mips_elf_data_section;
3901 /* This code used to do *secp = bfd_und_section_ptr if
3902 info->shared. I don't know why, and that doesn't make sense,
3903 so I took it out. */
3904 *secp = mips_elf_data_section_ptr;
3907 case SHN_MIPS_SUNDEFINED:
3908 *secp = bfd_und_section_ptr;
3912 if (SGI_COMPAT (abfd)
3914 && info->hash->creator == abfd->xvec
3915 && strcmp (*namep, "__rld_obj_head") == 0)
3917 struct elf_link_hash_entry *h;
3919 /* Mark __rld_obj_head as dynamic. */
3921 if (! (_bfd_generic_link_add_one_symbol
3922 (info, abfd, *namep, BSF_GLOBAL, *secp,
3923 (bfd_vma) *valp, (const char *) NULL, false,
3924 get_elf_backend_data (abfd)->collect,
3925 (struct bfd_link_hash_entry **) &h)))
3927 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
3928 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3929 h->type = STT_OBJECT;
3931 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
3934 mips_elf_hash_table (info)->use_rld_obj_head = true;
3937 /* If this is a mips16 text symbol, add 1 to the value to make it
3938 odd. This will cause something like .word SYM to come up with
3939 the right value when it is loaded into the PC. */
3940 if (sym->st_other == STO_MIPS16)
3946 /* Structure used to pass information to mips_elf_output_extsym. */
3951 struct bfd_link_info *info;
3952 struct ecoff_debug_info *debug;
3953 const struct ecoff_debug_swap *swap;
3957 /* This routine is used to write out ECOFF debugging external symbol
3958 information. It is called via mips_elf_link_hash_traverse. The
3959 ECOFF external symbol information must match the ELF external
3960 symbol information. Unfortunately, at this point we don't know
3961 whether a symbol is required by reloc information, so the two
3962 tables may wind up being different. We must sort out the external
3963 symbol information before we can set the final size of the .mdebug
3964 section, and we must set the size of the .mdebug section before we
3965 can relocate any sections, and we can't know which symbols are
3966 required by relocation until we relocate the sections.
3967 Fortunately, it is relatively unlikely that any symbol will be
3968 stripped but required by a reloc. In particular, it can not happen
3969 when generating a final executable. */
3972 mips_elf_output_extsym (h, data)
3973 struct mips_elf_link_hash_entry *h;
3976 struct extsym_info *einfo = (struct extsym_info *) data;
3978 asection *sec, *output_section;
3980 if (h->root.indx == -2)
3982 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3983 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
3984 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
3985 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
3987 else if (einfo->info->strip == strip_all
3988 || (einfo->info->strip == strip_some
3989 && bfd_hash_lookup (einfo->info->keep_hash,
3990 h->root.root.root.string,
3991 false, false) == NULL))
3999 if (h->esym.ifd == -2)
4002 h->esym.cobol_main = 0;
4003 h->esym.weakext = 0;
4004 h->esym.reserved = 0;
4005 h->esym.ifd = ifdNil;
4006 h->esym.asym.value = 0;
4007 h->esym.asym.st = stGlobal;
4009 if (SGI_COMPAT (einfo->abfd)
4010 && (h->root.root.type == bfd_link_hash_undefined
4011 || h->root.root.type == bfd_link_hash_undefweak))
4015 /* Use undefined class. Also, set class and type for some
4017 name = h->root.root.root.string;
4018 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
4019 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
4021 h->esym.asym.sc = scData;
4022 h->esym.asym.st = stLabel;
4023 h->esym.asym.value = 0;
4025 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
4027 h->esym.asym.sc = scAbs;
4028 h->esym.asym.st = stLabel;
4029 h->esym.asym.value =
4030 mips_elf_hash_table (einfo->info)->procedure_count;
4032 else if (strcmp (name, "_gp_disp") == 0)
4034 h->esym.asym.sc = scAbs;
4035 h->esym.asym.st = stLabel;
4036 h->esym.asym.value = elf_gp (einfo->abfd);
4039 h->esym.asym.sc = scUndefined;
4041 else if (h->root.root.type != bfd_link_hash_defined
4042 && h->root.root.type != bfd_link_hash_defweak)
4043 h->esym.asym.sc = scAbs;
4048 sec = h->root.root.u.def.section;
4049 output_section = sec->output_section;
4051 /* When making a shared library and symbol h is the one from
4052 the another shared library, OUTPUT_SECTION may be null. */
4053 if (output_section == NULL)
4054 h->esym.asym.sc = scUndefined;
4057 name = bfd_section_name (output_section->owner, output_section);
4059 if (strcmp (name, ".text") == 0)
4060 h->esym.asym.sc = scText;
4061 else if (strcmp (name, ".data") == 0)
4062 h->esym.asym.sc = scData;
4063 else if (strcmp (name, ".sdata") == 0)
4064 h->esym.asym.sc = scSData;
4065 else if (strcmp (name, ".rodata") == 0
4066 || strcmp (name, ".rdata") == 0)
4067 h->esym.asym.sc = scRData;
4068 else if (strcmp (name, ".bss") == 0)
4069 h->esym.asym.sc = scBss;
4070 else if (strcmp (name, ".sbss") == 0)
4071 h->esym.asym.sc = scSBss;
4072 else if (strcmp (name, ".init") == 0)
4073 h->esym.asym.sc = scInit;
4074 else if (strcmp (name, ".fini") == 0)
4075 h->esym.asym.sc = scFini;
4077 h->esym.asym.sc = scAbs;
4081 h->esym.asym.reserved = 0;
4082 h->esym.asym.index = indexNil;
4085 if (h->root.root.type == bfd_link_hash_common)
4086 h->esym.asym.value = h->root.root.u.c.size;
4087 else if (h->root.root.type == bfd_link_hash_defined
4088 || h->root.root.type == bfd_link_hash_defweak)
4090 if (h->esym.asym.sc == scCommon)
4091 h->esym.asym.sc = scBss;
4092 else if (h->esym.asym.sc == scSCommon)
4093 h->esym.asym.sc = scSBss;
4095 sec = h->root.root.u.def.section;
4096 output_section = sec->output_section;
4097 if (output_section != NULL)
4098 h->esym.asym.value = (h->root.root.u.def.value
4099 + sec->output_offset
4100 + output_section->vma);
4102 h->esym.asym.value = 0;
4104 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4106 /* Set type and value for a symbol with a function stub. */
4107 h->esym.asym.st = stProc;
4108 sec = h->root.root.u.def.section;
4110 h->esym.asym.value = 0;
4113 output_section = sec->output_section;
4114 if (output_section != NULL)
4115 h->esym.asym.value = (h->root.plt.offset
4116 + sec->output_offset
4117 + output_section->vma);
4119 h->esym.asym.value = 0;
4126 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
4127 h->root.root.root.string,
4130 einfo->failed = true;
4137 /* Create a runtime procedure table from the .mdebug section. */
4140 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
4143 struct bfd_link_info *info;
4145 struct ecoff_debug_info *debug;
4147 const struct ecoff_debug_swap *swap;
4148 HDRR *hdr = &debug->symbolic_header;
4150 struct rpdr_ext *erp;
4152 struct pdr_ext *epdr;
4153 struct sym_ext *esym;
4156 unsigned long size, count;
4157 unsigned long sindex;
4161 const char *no_name_func = _("static procedure (no name)");
4169 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4171 sindex = strlen (no_name_func) + 1;
4172 count = hdr->ipdMax;
4175 size = swap->external_pdr_size;
4177 epdr = (struct pdr_ext *) bfd_malloc (size * count);
4181 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
4184 size = sizeof (RPDR);
4185 rp = rpdr = (RPDR *) bfd_malloc (size * count);
4189 sv = (char **) bfd_malloc (sizeof (char *) * count);
4193 count = hdr->isymMax;
4194 size = swap->external_sym_size;
4195 esym = (struct sym_ext *) bfd_malloc (size * count);
4199 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
4202 count = hdr->issMax;
4203 ss = (char *) bfd_malloc (count);
4206 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
4209 count = hdr->ipdMax;
4210 for (i = 0; i < count; i++, rp++)
4212 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
4213 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
4214 rp->adr = sym.value;
4215 rp->regmask = pdr.regmask;
4216 rp->regoffset = pdr.regoffset;
4217 rp->fregmask = pdr.fregmask;
4218 rp->fregoffset = pdr.fregoffset;
4219 rp->frameoffset = pdr.frameoffset;
4220 rp->framereg = pdr.framereg;
4221 rp->pcreg = pdr.pcreg;
4223 sv[i] = ss + sym.iss;
4224 sindex += strlen (sv[i]) + 1;
4228 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
4229 size = BFD_ALIGN (size, 16);
4230 rtproc = (PTR) bfd_alloc (abfd, size);
4233 mips_elf_hash_table (info)->procedure_count = 0;
4237 mips_elf_hash_table (info)->procedure_count = count + 2;
4239 erp = (struct rpdr_ext *) rtproc;
4240 memset (erp, 0, sizeof (struct rpdr_ext));
4242 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
4243 strcpy (str, no_name_func);
4244 str += strlen (no_name_func) + 1;
4245 for (i = 0; i < count; i++)
4247 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
4248 strcpy (str, sv[i]);
4249 str += strlen (sv[i]) + 1;
4251 ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr);
4253 /* Set the size and contents of .rtproc section. */
4254 s->_raw_size = size;
4255 s->contents = (bfd_byte *) rtproc;
4257 /* Skip this section later on (I don't think this currently
4258 matters, but someday it might). */
4259 s->link_order_head = (struct bfd_link_order *) NULL;
4288 /* A comparison routine used to sort .gptab entries. */
4291 gptab_compare (p1, p2)
4295 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
4296 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
4298 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
4301 /* We need to use a special link routine to handle the .reginfo and
4302 the .mdebug sections. We need to merge all instances of these
4303 sections together, not write them all out sequentially. */
4306 _bfd_mips_elf_final_link (abfd, info)
4308 struct bfd_link_info *info;
4312 struct bfd_link_order *p;
4313 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
4314 asection *rtproc_sec;
4315 Elf32_RegInfo reginfo;
4316 struct ecoff_debug_info debug;
4317 const struct ecoff_debug_swap *swap
4318 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4319 HDRR *symhdr = &debug.symbolic_header;
4320 PTR mdebug_handle = NULL;
4322 /* If all the things we linked together were PIC, but we're
4323 producing an executable (rather than a shared object), then the
4324 resulting file is CPIC (i.e., it calls PIC code.) */
4326 && !info->relocateable
4327 && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
4329 elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
4330 elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
4333 /* We'd carefully arranged the dynamic symbol indices, and then the
4334 generic size_dynamic_sections renumbered them out from under us.
4335 Rather than trying somehow to prevent the renumbering, just do
4337 if (elf_hash_table (info)->dynamic_sections_created)
4341 struct mips_got_info *g;
4343 /* When we resort, we must tell mips_elf_sort_hash_table what
4344 the lowest index it may use is. That's the number of section
4345 symbols we're going to add. The generic ELF linker only
4346 adds these symbols when building a shared object. Note that
4347 we count the sections after (possibly) removing the .options
4349 if (!mips_elf_sort_hash_table (info, (info->shared
4350 ? bfd_count_sections (abfd) + 1
4354 /* Make sure we didn't grow the global .got region. */
4355 dynobj = elf_hash_table (info)->dynobj;
4356 got = bfd_get_section_by_name (dynobj, ".got");
4357 g = (struct mips_got_info *) elf_section_data (got)->tdata;
4359 if (g->global_gotsym != NULL)
4360 BFD_ASSERT ((elf_hash_table (info)->dynsymcount
4361 - g->global_gotsym->dynindx)
4362 <= g->global_gotno);
4365 /* On IRIX5, we omit the .options section. On IRIX6, however, we
4366 include it, even though we don't process it quite right. (Some
4367 entries are supposed to be merged.) Empirically, we seem to be
4368 better off including it then not. */
4369 if (IRIX_COMPAT (abfd) == ict_irix5)
4370 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
4372 if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
4374 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
4375 if (p->type == bfd_indirect_link_order)
4376 p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS;
4377 (*secpp)->link_order_head = NULL;
4378 *secpp = (*secpp)->next;
4379 --abfd->section_count;
4385 /* Get a value for the GP register. */
4386 if (elf_gp (abfd) == 0)
4388 struct bfd_link_hash_entry *h;
4390 h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
4391 if (h != (struct bfd_link_hash_entry *) NULL
4392 && h->type == bfd_link_hash_defined)
4393 elf_gp (abfd) = (h->u.def.value
4394 + h->u.def.section->output_section->vma
4395 + h->u.def.section->output_offset);
4396 else if (info->relocateable)
4400 /* Find the GP-relative section with the lowest offset. */
4402 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4404 && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
4407 /* And calculate GP relative to that. */
4408 elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
4412 /* If the relocate_section function needs to do a reloc
4413 involving the GP value, it should make a reloc_dangerous
4414 callback to warn that GP is not defined. */
4418 /* Go through the sections and collect the .reginfo and .mdebug
4422 gptab_data_sec = NULL;
4423 gptab_bss_sec = NULL;
4424 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4426 if (strcmp (o->name, ".reginfo") == 0)
4428 memset (®info, 0, sizeof reginfo);
4430 /* We have found the .reginfo section in the output file.
4431 Look through all the link_orders comprising it and merge
4432 the information together. */
4433 for (p = o->link_order_head;
4434 p != (struct bfd_link_order *) NULL;
4437 asection *input_section;
4439 Elf32_External_RegInfo ext;
4442 if (p->type != bfd_indirect_link_order)
4444 if (p->type == bfd_fill_link_order)
4449 input_section = p->u.indirect.section;
4450 input_bfd = input_section->owner;
4452 /* The linker emulation code has probably clobbered the
4453 size to be zero bytes. */
4454 if (input_section->_raw_size == 0)
4455 input_section->_raw_size = sizeof (Elf32_External_RegInfo);
4457 if (! bfd_get_section_contents (input_bfd, input_section,
4463 bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
4465 reginfo.ri_gprmask |= sub.ri_gprmask;
4466 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
4467 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
4468 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
4469 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
4471 /* ri_gp_value is set by the function
4472 mips_elf32_section_processing when the section is
4473 finally written out. */
4475 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4476 elf_link_input_bfd ignores this section. */
4477 input_section->flags &=~ SEC_HAS_CONTENTS;
4480 /* Size has been set in mips_elf_always_size_sections */
4481 BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
4483 /* Skip this section later on (I don't think this currently
4484 matters, but someday it might). */
4485 o->link_order_head = (struct bfd_link_order *) NULL;
4490 if (strcmp (o->name, ".mdebug") == 0)
4492 struct extsym_info einfo;
4494 /* We have found the .mdebug section in the output file.
4495 Look through all the link_orders comprising it and merge
4496 the information together. */
4497 symhdr->magic = swap->sym_magic;
4498 /* FIXME: What should the version stamp be? */
4500 symhdr->ilineMax = 0;
4504 symhdr->isymMax = 0;
4505 symhdr->ioptMax = 0;
4506 symhdr->iauxMax = 0;
4508 symhdr->issExtMax = 0;
4511 symhdr->iextMax = 0;
4513 /* We accumulate the debugging information itself in the
4514 debug_info structure. */
4516 debug.external_dnr = NULL;
4517 debug.external_pdr = NULL;
4518 debug.external_sym = NULL;
4519 debug.external_opt = NULL;
4520 debug.external_aux = NULL;
4522 debug.ssext = debug.ssext_end = NULL;
4523 debug.external_fdr = NULL;
4524 debug.external_rfd = NULL;
4525 debug.external_ext = debug.external_ext_end = NULL;
4527 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4528 if (mdebug_handle == (PTR) NULL)
4531 if (SGI_COMPAT (abfd))
4537 static const char * const name[] =
4538 { ".text", ".init", ".fini", ".data",
4539 ".rodata", ".sdata", ".sbss", ".bss" };
4540 static const int sc[] = { scText, scInit, scFini, scData,
4541 scRData, scSData, scSBss, scBss };
4544 esym.cobol_main = 0;
4548 esym.asym.iss = issNil;
4549 esym.asym.st = stLocal;
4550 esym.asym.reserved = 0;
4551 esym.asym.index = indexNil;
4553 for (i = 0; i < 8; i++)
4555 esym.asym.sc = sc[i];
4556 s = bfd_get_section_by_name (abfd, name[i]);
4559 esym.asym.value = s->vma;
4560 last = s->vma + s->_raw_size;
4563 esym.asym.value = last;
4565 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4571 for (p = o->link_order_head;
4572 p != (struct bfd_link_order *) NULL;
4575 asection *input_section;
4577 const struct ecoff_debug_swap *input_swap;
4578 struct ecoff_debug_info input_debug;
4582 if (p->type != bfd_indirect_link_order)
4584 if (p->type == bfd_fill_link_order)
4589 input_section = p->u.indirect.section;
4590 input_bfd = input_section->owner;
4592 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4593 || (get_elf_backend_data (input_bfd)
4594 ->elf_backend_ecoff_debug_swap) == NULL)
4596 /* I don't know what a non MIPS ELF bfd would be
4597 doing with a .mdebug section, but I don't really
4598 want to deal with it. */
4602 input_swap = (get_elf_backend_data (input_bfd)
4603 ->elf_backend_ecoff_debug_swap);
4605 BFD_ASSERT (p->size == input_section->_raw_size);
4607 /* The ECOFF linking code expects that we have already
4608 read in the debugging information and set up an
4609 ecoff_debug_info structure, so we do that now. */
4610 if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
4614 if (! (bfd_ecoff_debug_accumulate
4615 (mdebug_handle, abfd, &debug, swap, input_bfd,
4616 &input_debug, input_swap, info)))
4619 /* Loop through the external symbols. For each one with
4620 interesting information, try to find the symbol in
4621 the linker global hash table and save the information
4622 for the output external symbols. */
4623 eraw_src = input_debug.external_ext;
4624 eraw_end = (eraw_src
4625 + (input_debug.symbolic_header.iextMax
4626 * input_swap->external_ext_size));
4628 eraw_src < eraw_end;
4629 eraw_src += input_swap->external_ext_size)
4633 struct mips_elf_link_hash_entry *h;
4635 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4636 if (ext.asym.sc == scNil
4637 || ext.asym.sc == scUndefined
4638 || ext.asym.sc == scSUndefined)
4641 name = input_debug.ssext + ext.asym.iss;
4642 h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
4643 name, false, false, true);
4644 if (h == NULL || h->esym.ifd != -2)
4650 < input_debug.symbolic_header.ifdMax);
4651 ext.ifd = input_debug.ifdmap[ext.ifd];
4657 /* Free up the information we just read. */
4658 free (input_debug.line);
4659 free (input_debug.external_dnr);
4660 free (input_debug.external_pdr);
4661 free (input_debug.external_sym);
4662 free (input_debug.external_opt);
4663 free (input_debug.external_aux);
4664 free (input_debug.ss);
4665 free (input_debug.ssext);
4666 free (input_debug.external_fdr);
4667 free (input_debug.external_rfd);
4668 free (input_debug.external_ext);
4670 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4671 elf_link_input_bfd ignores this section. */
4672 input_section->flags &=~ SEC_HAS_CONTENTS;
4675 if (SGI_COMPAT (abfd) && info->shared)
4677 /* Create .rtproc section. */
4678 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
4679 if (rtproc_sec == NULL)
4681 flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
4682 | SEC_LINKER_CREATED | SEC_READONLY);
4684 rtproc_sec = bfd_make_section (abfd, ".rtproc");
4685 if (rtproc_sec == NULL
4686 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
4687 || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
4691 if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
4692 info, rtproc_sec, &debug))
4696 /* Build the external symbol information. */
4699 einfo.debug = &debug;
4701 einfo.failed = false;
4702 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
4703 mips_elf_output_extsym,
4708 /* Set the size of the .mdebug section. */
4709 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4711 /* Skip this section later on (I don't think this currently
4712 matters, but someday it might). */
4713 o->link_order_head = (struct bfd_link_order *) NULL;
4718 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
4720 const char *subname;
4723 Elf32_External_gptab *ext_tab;
4726 /* The .gptab.sdata and .gptab.sbss sections hold
4727 information describing how the small data area would
4728 change depending upon the -G switch. These sections
4729 not used in executables files. */
4730 if (! info->relocateable)
4734 for (p = o->link_order_head;
4735 p != (struct bfd_link_order *) NULL;
4738 asection *input_section;
4740 if (p->type != bfd_indirect_link_order)
4742 if (p->type == bfd_fill_link_order)
4747 input_section = p->u.indirect.section;
4749 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4750 elf_link_input_bfd ignores this section. */
4751 input_section->flags &=~ SEC_HAS_CONTENTS;
4754 /* Skip this section later on (I don't think this
4755 currently matters, but someday it might). */
4756 o->link_order_head = (struct bfd_link_order *) NULL;
4758 /* Really remove the section. */
4759 for (secpp = &abfd->sections;
4761 secpp = &(*secpp)->next)
4763 *secpp = (*secpp)->next;
4764 --abfd->section_count;
4769 /* There is one gptab for initialized data, and one for
4770 uninitialized data. */
4771 if (strcmp (o->name, ".gptab.sdata") == 0)
4773 else if (strcmp (o->name, ".gptab.sbss") == 0)
4777 (*_bfd_error_handler)
4778 (_("%s: illegal section name `%s'"),
4779 bfd_get_filename (abfd), o->name);
4780 bfd_set_error (bfd_error_nonrepresentable_section);
4784 /* The linker script always combines .gptab.data and
4785 .gptab.sdata into .gptab.sdata, and likewise for
4786 .gptab.bss and .gptab.sbss. It is possible that there is
4787 no .sdata or .sbss section in the output file, in which
4788 case we must change the name of the output section. */
4789 subname = o->name + sizeof ".gptab" - 1;
4790 if (bfd_get_section_by_name (abfd, subname) == NULL)
4792 if (o == gptab_data_sec)
4793 o->name = ".gptab.data";
4795 o->name = ".gptab.bss";
4796 subname = o->name + sizeof ".gptab" - 1;
4797 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
4800 /* Set up the first entry. */
4802 tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab));
4805 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
4806 tab[0].gt_header.gt_unused = 0;
4808 /* Combine the input sections. */
4809 for (p = o->link_order_head;
4810 p != (struct bfd_link_order *) NULL;
4813 asection *input_section;
4817 bfd_size_type gpentry;
4819 if (p->type != bfd_indirect_link_order)
4821 if (p->type == bfd_fill_link_order)
4826 input_section = p->u.indirect.section;
4827 input_bfd = input_section->owner;
4829 /* Combine the gptab entries for this input section one
4830 by one. We know that the input gptab entries are
4831 sorted by ascending -G value. */
4832 size = bfd_section_size (input_bfd, input_section);
4834 for (gpentry = sizeof (Elf32_External_gptab);
4836 gpentry += sizeof (Elf32_External_gptab))
4838 Elf32_External_gptab ext_gptab;
4839 Elf32_gptab int_gptab;
4845 if (! (bfd_get_section_contents
4846 (input_bfd, input_section, (PTR) &ext_gptab,
4847 gpentry, sizeof (Elf32_External_gptab))))
4853 bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
4855 val = int_gptab.gt_entry.gt_g_value;
4856 add = int_gptab.gt_entry.gt_bytes - last;
4859 for (look = 1; look < c; look++)
4861 if (tab[look].gt_entry.gt_g_value >= val)
4862 tab[look].gt_entry.gt_bytes += add;
4864 if (tab[look].gt_entry.gt_g_value == val)
4870 Elf32_gptab *new_tab;
4873 /* We need a new table entry. */
4874 new_tab = ((Elf32_gptab *)
4875 bfd_realloc ((PTR) tab,
4876 (c + 1) * sizeof (Elf32_gptab)));
4877 if (new_tab == NULL)
4883 tab[c].gt_entry.gt_g_value = val;
4884 tab[c].gt_entry.gt_bytes = add;
4886 /* Merge in the size for the next smallest -G
4887 value, since that will be implied by this new
4890 for (look = 1; look < c; look++)
4892 if (tab[look].gt_entry.gt_g_value < val
4894 || (tab[look].gt_entry.gt_g_value
4895 > tab[max].gt_entry.gt_g_value)))
4899 tab[c].gt_entry.gt_bytes +=
4900 tab[max].gt_entry.gt_bytes;
4905 last = int_gptab.gt_entry.gt_bytes;
4908 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4909 elf_link_input_bfd ignores this section. */
4910 input_section->flags &=~ SEC_HAS_CONTENTS;
4913 /* The table must be sorted by -G value. */
4915 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
4917 /* Swap out the table. */
4918 ext_tab = ((Elf32_External_gptab *)
4919 bfd_alloc (abfd, c * sizeof (Elf32_External_gptab)));
4920 if (ext_tab == NULL)
4926 for (i = 0; i < c; i++)
4927 bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i);
4930 o->_raw_size = c * sizeof (Elf32_External_gptab);
4931 o->contents = (bfd_byte *) ext_tab;
4933 /* Skip this section later on (I don't think this currently
4934 matters, but someday it might). */
4935 o->link_order_head = (struct bfd_link_order *) NULL;
4939 /* Invoke the regular ELF backend linker to do all the work. */
4940 if (ABI_64_P (abfd))
4943 if (!bfd_elf64_bfd_final_link (abfd, info))
4950 else if (!bfd_elf32_bfd_final_link (abfd, info))
4953 /* Now write out the computed sections. */
4955 if (reginfo_sec != (asection *) NULL)
4957 Elf32_External_RegInfo ext;
4959 bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
4960 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
4961 (file_ptr) 0, sizeof ext))
4965 if (mdebug_sec != (asection *) NULL)
4967 BFD_ASSERT (abfd->output_has_begun);
4968 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4970 mdebug_sec->filepos))
4973 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4976 if (gptab_data_sec != (asection *) NULL)
4978 if (! bfd_set_section_contents (abfd, gptab_data_sec,
4979 gptab_data_sec->contents,
4981 gptab_data_sec->_raw_size))
4985 if (gptab_bss_sec != (asection *) NULL)
4987 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
4988 gptab_bss_sec->contents,
4990 gptab_bss_sec->_raw_size))
4994 if (SGI_COMPAT (abfd))
4996 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
4997 if (rtproc_sec != NULL)
4999 if (! bfd_set_section_contents (abfd, rtproc_sec,
5000 rtproc_sec->contents,
5002 rtproc_sec->_raw_size))
5010 /* Returns the GOT section for ABFD. */
5013 mips_elf_got_section (abfd)
5016 return bfd_get_section_by_name (abfd, ".got");
5019 /* Returns the GOT information associated with the link indicated by
5020 INFO. If SGOTP is non-NULL, it is filled in with the GOT
5023 static struct mips_got_info *
5024 mips_elf_got_info (abfd, sgotp)
5029 struct mips_got_info *g;
5031 sgot = mips_elf_got_section (abfd);
5032 BFD_ASSERT (sgot != NULL);
5033 BFD_ASSERT (elf_section_data (sgot) != NULL);
5034 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5035 BFD_ASSERT (g != NULL);
5042 /* Return whether a relocation is against a local symbol. */
5045 mips_elf_local_relocation_p (input_bfd, relocation, local_sections)
5047 const Elf_Internal_Rela *relocation;
5048 asection **local_sections;
5050 unsigned long r_symndx;
5051 Elf_Internal_Shdr *symtab_hdr;
5053 r_symndx = ELF32_R_SYM (relocation->r_info);
5054 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5055 if (! elf_bad_symtab (input_bfd))
5056 return r_symndx < symtab_hdr->sh_info;
5059 /* The symbol table does not follow the rule that local symbols
5060 must come before globals. */
5061 return local_sections[r_symndx] != NULL;
5065 /* Sign-extend VALUE, which has the indicated number of BITS. */
5068 mips_elf_sign_extend (value, bits)
5072 if (value & (1 << (bits - 1)))
5073 /* VALUE is negative. */
5074 value |= ((bfd_vma) - 1) << bits;
5079 /* Return non-zero if the indicated VALUE has overflowed the maximum
5080 range expressable by a signed number with the indicated number of
5084 mips_elf_overflow_p (value, bits)
5088 bfd_signed_vma svalue = (bfd_signed_vma) value;
5090 if (svalue > (1 << (bits - 1)) - 1)
5091 /* The value is too big. */
5093 else if (svalue < -(1 << (bits - 1)))
5094 /* The value is too small. */
5101 /* Calculate the %high function. */
5104 mips_elf_high (value)
5107 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
5110 /* Calculate the %higher function. */
5113 mips_elf_higher (value)
5114 bfd_vma value ATTRIBUTE_UNUSED;
5117 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
5120 return (bfd_vma) -1;
5124 /* Calculate the %highest function. */
5127 mips_elf_highest (value)
5128 bfd_vma value ATTRIBUTE_UNUSED;
5131 return ((value + (bfd_vma) 0x800080008000) > 48) & 0xffff;
5134 return (bfd_vma) -1;
5138 /* Returns the GOT index for the global symbol indicated by H. */
5141 mips_elf_global_got_index (abfd, h)
5143 struct elf_link_hash_entry *h;
5147 struct mips_got_info *g;
5149 g = mips_elf_got_info (abfd, &sgot);
5151 /* Once we determine the global GOT entry with the lowest dynamic
5152 symbol table index, we must put all dynamic symbols with greater
5153 indices into the GOT. That makes it easy to calculate the GOT
5155 BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
5156 index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
5157 * MIPS_ELF_GOT_SIZE (abfd));
5158 BFD_ASSERT (index < sgot->_raw_size);
5163 /* Returns the offset for the entry at the INDEXth position
5167 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
5175 sgot = mips_elf_got_section (dynobj);
5176 gp = _bfd_get_gp_value (output_bfd);
5177 return (sgot->output_section->vma + sgot->output_offset + index -
5181 /* If H is a symbol that needs a global GOT entry, but has a dynamic
5182 symbol table index lower than any we've seen to date, record it for
5186 mips_elf_record_global_got_symbol (h, info, g)
5187 struct elf_link_hash_entry *h;
5188 struct bfd_link_info *info;
5189 struct mips_got_info *g ATTRIBUTE_UNUSED;
5191 /* A global symbol in the GOT must also be in the dynamic symbol
5193 if (h->dynindx == -1
5194 && !bfd_elf32_link_record_dynamic_symbol (info, h))
5197 /* If we've already marked this entry as need GOT space, we don't
5198 need to do it again. */
5199 if (h->got.offset != (bfd_vma) - 1)
5202 /* By setting this to a value other than -1, we are indicating that
5203 there needs to be a GOT entry for H. */
5209 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
5210 the dynamic symbols. */
5212 struct mips_elf_hash_sort_data
5214 /* The symbol in the global GOT with the lowest dynamic symbol table
5216 struct elf_link_hash_entry *low;
5217 /* The least dynamic symbol table index corresponding to a symbol
5218 with a GOT entry. */
5219 long min_got_dynindx;
5220 /* The greatest dynamic symbol table index not corresponding to a
5221 symbol without a GOT entry. */
5222 long max_non_got_dynindx;
5225 /* If H needs a GOT entry, assign it the highest available dynamic
5226 index. Otherwise, assign it the lowest available dynamic
5230 mips_elf_sort_hash_table_f (h, data)
5231 struct mips_elf_link_hash_entry *h;
5234 struct mips_elf_hash_sort_data *hsd
5235 = (struct mips_elf_hash_sort_data *) data;
5237 /* Symbols without dynamic symbol table entries aren't interesting
5239 if (h->root.dynindx == -1)
5242 if (h->root.got.offset != 0)
5243 h->root.dynindx = hsd->max_non_got_dynindx++;
5246 h->root.dynindx = --hsd->min_got_dynindx;
5247 hsd->low = (struct elf_link_hash_entry *) h;
5253 /* Sort the dynamic symbol table so that symbols that need GOT entries
5254 appear towards the end. This reduces the amount of GOT space
5255 required. MAX_LOCAL is used to set the number of local symbols
5256 known to be in the dynamic symbol table. During
5257 mips_elf_size_dynamic_sections, this value is 1. Afterward, the
5258 section symbols are added and the count is higher. */
5261 mips_elf_sort_hash_table (info, max_local)
5262 struct bfd_link_info *info;
5263 unsigned long max_local;
5265 struct mips_elf_hash_sort_data hsd;
5266 struct mips_got_info *g;
5269 dynobj = elf_hash_table (info)->dynobj;
5272 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
5273 hsd.max_non_got_dynindx = max_local;
5274 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
5275 elf_hash_table (info)),
5276 mips_elf_sort_hash_table_f,
5279 /* There shoud have been enough room in the symbol table to
5280 accomodate both the GOT and non-GOT symbols. */
5281 BFD_ASSERT (hsd.min_got_dynindx == hsd.max_non_got_dynindx);
5283 /* Now we know which dynamic symbol has the lowest dynamic symbol
5284 table index in the GOT. */
5285 g = mips_elf_got_info (dynobj, NULL);
5286 g->global_gotsym = hsd.low;
5291 /* Create a local GOT entry for VALUE. Return the index of the entry,
5292 or -1 if it could not be created. */
5295 mips_elf_create_local_got_entry (abfd, g, sgot, value)
5297 struct mips_got_info *g;
5301 if (g->assigned_gotno >= g->local_gotno)
5303 /* We didn't allocate enough space in the GOT. */
5304 (*_bfd_error_handler)
5305 (_("not enough GOT space for local GOT entries"));
5306 bfd_set_error (bfd_error_bad_value);
5307 return (bfd_vma) -1;
5310 MIPS_ELF_PUT_WORD (abfd, value,
5312 + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
5313 return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
5316 /* Returns the GOT offset at which the indicated address can be found.
5317 If there is not yet a GOT entry for this value, create one. Returns
5318 -1 if no satisfactory GOT offset can be found. */
5321 mips_elf_local_got_index (abfd, info, value)
5323 struct bfd_link_info *info;
5327 struct mips_got_info *g;
5330 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5332 /* Look to see if we already have an appropriate entry. */
5333 for (entry = (sgot->contents
5334 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5335 entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5336 entry += MIPS_ELF_GOT_SIZE (abfd))
5338 bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
5339 if (address == value)
5340 return entry - sgot->contents;
5343 return mips_elf_create_local_got_entry (abfd, g, sgot, value);
5346 /* Find a GOT entry that is within 32KB of the VALUE. These entries
5347 are supposed to be placed at small offsets in the GOT, i.e.,
5348 within 32KB of GP. Return the index into the GOT for this page,
5349 and store the offset from this entry to the desired address in
5350 OFFSETP, if it is non-NULL. */
5353 mips_elf_got_page (abfd, info, value, offsetp)
5355 struct bfd_link_info *info;
5360 struct mips_got_info *g;
5362 bfd_byte *last_entry;
5366 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5368 /* Look to see if we aleady have an appropriate entry. */
5369 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5370 for (entry = (sgot->contents
5371 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5372 entry != last_entry;
5373 entry += MIPS_ELF_GOT_SIZE (abfd))
5375 address = MIPS_ELF_GET_WORD (abfd, entry);
5377 if (!mips_elf_overflow_p (value - address, 16))
5379 /* This entry will serve as the page pointer. We can add a
5380 16-bit number to it to get the actual address. */
5381 index = entry - sgot->contents;
5386 /* If we didn't have an appropriate entry, we create one now. */
5387 if (entry == last_entry)
5388 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
5392 address = MIPS_ELF_GET_WORD (abfd, entry);
5393 *offsetp = value - address;
5399 /* Find a GOT entry whose higher-order 16 bits are the same as those
5400 for value. Return the index into the GOT for this entry. */
5403 mips_elf_got16_entry (abfd, info, value)
5405 struct bfd_link_info *info;
5409 struct mips_got_info *g;
5411 bfd_byte *last_entry;
5415 /* Although the ABI says that it is "the high-order 16 bits" that we
5416 want, it is really the %high value. The complete value is
5417 calculated with a `addiu' of a LO16 relocation, just as with a
5419 value = mips_elf_high (value) << 16;
5420 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5422 /* Look to see if we already have an appropriate entry. */
5423 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5424 for (entry = (sgot->contents
5425 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5426 entry != last_entry;
5427 entry += MIPS_ELF_GOT_SIZE (abfd))
5429 address = MIPS_ELF_GET_WORD (abfd, entry);
5430 if ((address & 0xffff0000) == value)
5432 /* This entry has the right high-order 16 bits. */
5433 index = entry - sgot->contents;
5438 /* If we didn't have an appropriate entry, we create one now. */
5439 if (entry == last_entry)
5440 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
5445 /* Returns the first R_MIPS_LO16 relocation found, beginning with
5446 RELOCATION. RELEND is one-past-the-end of the relocation table. */
5448 static const Elf_Internal_Rela *
5449 mips_elf_next_lo16_relocation (relocation, relend)
5450 const Elf_Internal_Rela *relocation;
5451 const Elf_Internal_Rela *relend;
5453 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
5454 immediately following. However, for the IRIX6 ABI, the next
5455 relocation may be a composed relocation consisting of several
5456 relocations for the same address. In that case, the R_MIPS_LO16
5457 relocation may occur as one of these. We permit a similar
5458 extension in general, as that is useful for GCC. */
5459 while (relocation < relend)
5461 if (ELF32_R_TYPE (relocation->r_info) == R_MIPS_LO16)
5467 /* We didn't find it. */
5468 bfd_set_error (bfd_error_bad_value);
5472 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
5473 is the original relocation, which is now being transformed into a
5474 dyanmic relocation. The ADDENDP is adjusted if necessary; the
5475 caller should store the result in place of the original addend. */
5478 mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
5479 symbol, addendp, input_section)
5481 struct bfd_link_info *info;
5482 const Elf_Internal_Rela *rel;
5483 struct mips_elf_link_hash_entry *h;
5487 asection *input_section;
5489 Elf_Internal_Rel outrel;
5495 r_type = ELF32_R_TYPE (rel->r_info);
5496 dynobj = elf_hash_table (info)->dynobj;
5498 = bfd_get_section_by_name (dynobj,
5499 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
5500 BFD_ASSERT (sreloc != NULL);
5504 /* We begin by assuming that the offset for the dynamic relocation
5505 is the same as for the original relocation. We'll adjust this
5506 later to reflect the correct output offsets. */
5507 if (elf_section_data (input_section)->stab_info == NULL)
5508 outrel.r_offset = rel->r_offset;
5511 /* Except that in a stab section things are more complex.
5512 Because we compress stab information, the offset given in the
5513 relocation may not be the one we want; we must let the stabs
5514 machinery tell us the offset. */
5516 = (_bfd_stab_section_offset
5517 (output_bfd, &elf_hash_table (info)->stab_info,
5519 &elf_section_data (input_section)->stab_info,
5521 /* If we didn't need the relocation at all, this value will be
5523 if (outrel.r_offset == (bfd_vma) -1)
5527 /* If we've decided to skip this relocation, just output an emtpy
5528 record. Note that R_MIPS_NONE == 0, so that this call to memset
5529 is a way of setting R_TYPE to R_MIPS_NONE. */
5531 memset (&outrel, 0, sizeof (outrel));
5535 bfd_vma section_offset;
5537 /* We must now calculate the dynamic symbol table index to use
5538 in the relocation. */
5540 && (! info->symbolic || (h->root.elf_link_hash_flags
5541 & ELF_LINK_HASH_DEF_REGULAR) == 0))
5543 indx = h->root.dynindx;
5544 BFD_ASSERT (indx != -1);
5548 if (sec != NULL && bfd_is_abs_section (sec))
5550 else if (sec == NULL || sec->owner == NULL)
5552 bfd_set_error (bfd_error_bad_value);
5557 indx = elf_section_data (sec->output_section)->dynindx;
5562 /* Figure out how far the target of the relocation is from
5563 the beginning of its section. */
5564 section_offset = symbol - sec->output_section->vma;
5565 /* The relocation we're building is section-relative.
5566 Therefore, the original addend must be adjusted by the
5568 *addendp += symbol - sec->output_section->vma;
5569 /* Now, the relocation is just against the section. */
5570 symbol = sec->output_section->vma;
5573 /* If the relocation was previously an absolute relocation, we
5574 must adjust it by the value we give it in the dynamic symbol
5576 if (r_type != R_MIPS_REL32)
5579 /* The relocation is always an REL32 relocation because we don't
5580 know where the shared library will wind up at load-time. */
5581 outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
5583 /* Adjust the output offset of the relocation to reference the
5584 correct location in the output file. */
5585 outrel.r_offset += (input_section->output_section->vma
5586 + input_section->output_offset);
5589 /* Put the relocation back out. We have to use the special
5590 relocation outputter in the 64-bit case since the 64-bit
5591 relocation format is non-standard. */
5592 if (ABI_64_P (output_bfd))
5594 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
5595 (output_bfd, &outrel,
5597 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
5600 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
5601 (((Elf32_External_Rel *)
5603 + sreloc->reloc_count));
5605 /* Record the index of the first relocation referencing H. This
5606 information is later emitted in the .msym section. */
5608 && (h->min_dyn_reloc_index == 0
5609 || sreloc->reloc_count < h->min_dyn_reloc_index))
5610 h->min_dyn_reloc_index = sreloc->reloc_count;
5612 /* We've now added another relocation. */
5613 ++sreloc->reloc_count;
5615 /* Make sure the output section is writable. The dynamic linker
5616 will be writing to it. */
5617 elf_section_data (input_section->output_section)->this_hdr.sh_flags
5620 /* On IRIX5, make an entry of compact relocation info. */
5621 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
5623 asection* scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
5628 Elf32_crinfo cptrel;
5630 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
5631 cptrel.vaddr = (rel->r_offset
5632 + input_section->output_section->vma
5633 + input_section->output_offset);
5634 if (r_type == R_MIPS_REL32)
5635 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
5637 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
5638 mips_elf_set_cr_dist2to (cptrel, 0);
5639 cptrel.konst = *addendp;
5641 cr = (scpt->contents
5642 + sizeof (Elf32_External_compact_rel));
5643 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
5644 ((Elf32_External_crinfo *) cr
5645 + scpt->reloc_count));
5646 ++scpt->reloc_count;
5653 /* Calculate the value produced by the RELOCATION (which comes from
5654 the INPUT_BFD). The ADDEND is the addend to use for this
5655 RELOCATION; RELOCATION->R_ADDEND is ignored.
5657 The result of the relocation calculation is stored in VALUEP.
5658 REQUIRE_JALXP indicates whether or not the opcode used with this
5659 relocation must be JALX.
5661 This function returns bfd_reloc_continue if the caller need take no
5662 further action regarding this relocation, bfd_reloc_notsupported if
5663 something goes dramatically wrong, bfd_reloc_overflow if an
5664 overflow occurs, and bfd_reloc_ok to indicate success. */
5666 static bfd_reloc_status_type
5667 mips_elf_calculate_relocation (abfd,
5681 asection *input_section;
5682 struct bfd_link_info *info;
5683 const Elf_Internal_Rela *relocation;
5685 reloc_howto_type *howto;
5686 Elf_Internal_Sym *local_syms;
5687 asection **local_sections;
5690 boolean *require_jalxp;
5692 /* The eventual value we will return. */
5694 /* The address of the symbol against which the relocation is
5697 /* The final GP value to be used for the relocatable, executable, or
5698 shared object file being produced. */
5699 bfd_vma gp = (bfd_vma) - 1;
5700 /* The place (section offset or address) of the storage unit being
5703 /* The value of GP used to create the relocatable object. */
5704 bfd_vma gp0 = (bfd_vma) - 1;
5705 /* The offset into the global offset table at which the address of
5706 the relocation entry symbol, adjusted by the addend, resides
5707 during execution. */
5708 bfd_vma g = (bfd_vma) - 1;
5709 /* The section in which the symbol referenced by the relocation is
5711 asection *sec = NULL;
5712 struct mips_elf_link_hash_entry* h = NULL;
5713 /* True if the symbol referred to by this relocation is a local
5716 /* True if the symbol referred to by this relocation is "_gp_disp". */
5717 boolean gp_disp_p = false;
5718 Elf_Internal_Shdr *symtab_hdr;
5720 unsigned long r_symndx;
5722 /* True if overflow occurred during the calculation of the
5723 relocation value. */
5724 boolean overflowed_p;
5725 /* True if this relocation refers to a MIPS16 function. */
5726 boolean target_is_16_bit_code_p = false;
5728 /* Parse the relocation. */
5729 r_symndx = ELF32_R_SYM (relocation->r_info);
5730 r_type = ELF32_R_TYPE (relocation->r_info);
5731 p = (input_section->output_section->vma
5732 + input_section->output_offset
5733 + relocation->r_offset);
5735 /* Assume that there will be no overflow. */
5736 overflowed_p = false;
5738 /* Figure out whether or not the symbol is local, and get the offset
5739 used in the array of hash table entries. */
5740 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5741 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
5743 if (! elf_bad_symtab (input_bfd))
5744 extsymoff = symtab_hdr->sh_info;
5747 /* The symbol table does not follow the rule that local symbols
5748 must come before globals. */
5752 /* Figure out the value of the symbol. */
5755 Elf_Internal_Sym *sym;
5757 sym = local_syms + r_symndx;
5758 sec = local_sections[r_symndx];
5760 symbol = sec->output_section->vma + sec->output_offset;
5761 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
5762 symbol += sym->st_value;
5764 /* MIPS16 text labels should be treated as odd. */
5765 if (sym->st_other == STO_MIPS16)
5768 /* Record the name of this symbol, for our caller. */
5769 *namep = bfd_elf_string_from_elf_section (input_bfd,
5770 symtab_hdr->sh_link,
5773 *namep = bfd_section_name (input_bfd, sec);
5775 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
5779 /* For global symbols we look up the symbol in the hash-table. */
5780 h = ((struct mips_elf_link_hash_entry *)
5781 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
5782 /* Find the real hash-table entry for this symbol. */
5783 while (h->root.type == bfd_link_hash_indirect
5784 || h->root.type == bfd_link_hash_warning)
5785 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
5787 /* Record the name of this symbol, for our caller. */
5788 *namep = h->root.root.root.string;
5790 /* See if this is the special _gp_disp symbol. Note that such a
5791 symbol must always be a global symbol. */
5792 if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
5794 /* Relocations against _gp_disp are permitted only with
5795 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
5796 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
5797 return bfd_reloc_notsupported;
5801 /* If this symbol is defined, calculate its address. Note that
5802 _gp_disp is a magic symbol, always implicitly defined by the
5803 linker, so it's inappropriate to check to see whether or not
5805 else if ((h->root.root.type == bfd_link_hash_defined
5806 || h->root.root.type == bfd_link_hash_defweak)
5807 && h->root.root.u.def.section)
5809 sec = h->root.root.u.def.section;
5810 if (sec->output_section)
5811 symbol = (h->root.root.u.def.value
5812 + sec->output_section->vma
5813 + sec->output_offset);
5815 symbol = h->root.root.u.def.value;
5817 else if (h->root.root.type == bfd_link_hash_undefweak)
5818 /* We allow relocations against undefined weak symbols, giving
5819 it the value zero, so that you can undefined weak functions
5820 and check to see if they exist by looking at their
5823 else if (info->shared && !info->symbolic && !info->no_undefined)
5825 else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0)
5827 /* If this is a dynamic link, we should have created a
5828 _DYNAMIC_LINK symbol in mips_elf_create_dynamic_sections.
5829 Otherwise, we should define the symbol with a value of 0.
5830 FIXME: It should probably get into the symbol table
5832 BFD_ASSERT (! info->shared);
5833 BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
5838 (*info->callbacks->undefined_symbol)
5839 (info, h->root.root.root.string, input_bfd,
5840 input_section, relocation->r_offset);
5841 return bfd_reloc_undefined;
5844 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
5847 /* If this is a 32-bit call to a 16-bit function with a stub, we
5848 need to redirect the call to the stub, unless we're already *in*
5850 if (r_type != R_MIPS16_26 && !info->relocateable
5851 && ((h != NULL && h->fn_stub != NULL)
5852 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
5853 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
5854 && !mips_elf_stub_section_p (input_bfd, input_section))
5856 /* This is a 32-bit call to a 16-bit function. We should
5857 have already noticed that we were going to need the
5860 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
5863 BFD_ASSERT (h->need_fn_stub);
5867 symbol = sec->output_section->vma + sec->output_offset;
5869 /* If this is a 16-bit call to a 32-bit function with a stub, we
5870 need to redirect the call to the stub. */
5871 else if (r_type == R_MIPS16_26 && !info->relocateable
5873 && (h->call_stub != NULL || h->call_fp_stub != NULL)
5874 && !target_is_16_bit_code_p)
5876 /* If both call_stub and call_fp_stub are defined, we can figure
5877 out which one to use by seeing which one appears in the input
5879 if (h->call_stub != NULL && h->call_fp_stub != NULL)
5884 for (o = input_bfd->sections; o != NULL; o = o->next)
5886 if (strncmp (bfd_get_section_name (input_bfd, o),
5887 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
5889 sec = h->call_fp_stub;
5896 else if (h->call_stub != NULL)
5899 sec = h->call_fp_stub;
5901 BFD_ASSERT (sec->_raw_size > 0);
5902 symbol = sec->output_section->vma + sec->output_offset;
5905 /* Calls from 16-bit code to 32-bit code and vice versa require the
5906 special jalx instruction. */
5907 *require_jalxp = (!info->relocateable
5908 && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p));
5910 /* If we haven't already determined the GOT offset, or the GP value,
5911 and we're going to need it, get it now. */
5916 case R_MIPS_GOT_DISP:
5917 case R_MIPS_GOT_HI16:
5918 case R_MIPS_CALL_HI16:
5919 case R_MIPS_GOT_LO16:
5920 case R_MIPS_CALL_LO16:
5921 /* Find the index into the GOT where this value is located. */
5924 BFD_ASSERT (addend == 0);
5925 g = mips_elf_global_got_index
5926 (elf_hash_table (info)->dynobj,
5927 (struct elf_link_hash_entry*) h);
5929 else if (r_type == R_MIPS_GOT16)
5930 /* There's no need to create a local GOT entry here; the
5931 calculation for a local GOT16 entry does not involve G. */
5935 g = mips_elf_local_got_index (abfd, info, symbol + addend);
5936 if (g == (bfd_vma) -1)
5940 /* Convert GOT indices to actual offsets. */
5941 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
5947 case R_MIPS_GPREL16:
5948 case R_MIPS_GPREL32:
5949 gp0 = _bfd_get_gp_value (input_bfd);
5950 gp = _bfd_get_gp_value (abfd);
5957 /* Figure out what kind of relocation is being performed. */
5961 return bfd_reloc_continue;
5964 value = symbol + mips_elf_sign_extend (addend, 16);
5965 overflowed_p = mips_elf_overflow_p (value, 16);
5972 || (elf_hash_table (info)->dynamic_sections_created
5974 && ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
5976 && (input_section->flags & SEC_ALLOC) != 0)
5978 /* If we're creating a shared library, or this relocation is
5979 against a symbol in a shared library, then we can't know
5980 where the symbol will end up. So, we create a relocation
5981 record in the output, and leave the job up to the dynamic
5984 if (!mips_elf_create_dynamic_relocation (abfd,
5996 if (r_type != R_MIPS_REL32)
5997 value = symbol + addend;
6001 value &= howto->dst_mask;
6005 /* The calculation for R_MIPS_26 is just the same as for an
6006 R_MIPS_26. It's only the storage of the relocated field into
6007 the output file that's different. That's handled in
6008 mips_elf_perform_relocation. So, we just fall through to the
6009 R_MIPS_26 case here. */
6012 value = (((addend << 2) | (p & 0xf0000000)) + symbol) >> 2;
6014 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
6015 value &= howto->dst_mask;
6021 value = mips_elf_high (addend + symbol);
6022 value &= howto->dst_mask;
6026 value = mips_elf_high (addend + gp - p);
6027 overflowed_p = mips_elf_overflow_p (value, 16);
6033 value = (symbol + addend) & howto->dst_mask;
6036 value = addend + gp - p + 4;
6037 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
6038 for overflow. But, on, say, Irix 5, relocations against
6039 _gp_disp are normally generated from the .cpload
6040 pseudo-op. It generates code that normally looks like
6043 lui $gp,%hi(_gp_disp)
6044 addiu $gp,$gp,%lo(_gp_disp)
6047 Here $t9 holds the address of the function being called,
6048 as required by the MIPS ELF ABI. The R_MIPS_LO16
6049 relocation can easily overflow in this situation, but the
6050 R_MIPS_HI16 relocation will handle the overflow.
6051 Therefore, we consider this a bug in the MIPS ABI, and do
6052 not check for overflow here. */
6056 case R_MIPS_LITERAL:
6057 /* Because we don't merge literal sections, we can handle this
6058 just like R_MIPS_GPREL16. In the long run, we should merge
6059 shared literals, and then we will need to additional work
6064 case R_MIPS16_GPREL:
6065 /* The R_MIPS16_GPREL performs the same calculation as
6066 R_MIPS_GPREL16, but stores the relocated bits in a different
6067 order. We don't need to do anything special here; the
6068 differences are handled in mips_elf_perform_relocation. */
6069 case R_MIPS_GPREL16:
6071 value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
6073 value = mips_elf_sign_extend (addend, 16) + symbol - gp;
6074 overflowed_p = mips_elf_overflow_p (value, 16);
6080 value = mips_elf_got16_entry (abfd, info, symbol + addend);
6081 if (value == (bfd_vma) -1)
6084 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6087 overflowed_p = mips_elf_overflow_p (value, 16);
6094 case R_MIPS_GOT_DISP:
6096 overflowed_p = mips_elf_overflow_p (value, 16);
6099 case R_MIPS_GPREL32:
6100 value = (addend + symbol + gp0 - gp) & howto->dst_mask;
6104 value = mips_elf_sign_extend (addend, 16) + symbol - p;
6105 overflowed_p = mips_elf_overflow_p (value, 16);
6108 case R_MIPS_GOT_HI16:
6109 case R_MIPS_CALL_HI16:
6110 /* We're allowed to handle these two relocations identically.
6111 The dynamic linker is allowed to handle the CALL relocations
6112 differently by creating a lazy evaluation stub. */
6114 value = mips_elf_high (value);
6115 value &= howto->dst_mask;
6118 case R_MIPS_GOT_LO16:
6119 case R_MIPS_CALL_LO16:
6120 value = g & howto->dst_mask;
6123 case R_MIPS_GOT_PAGE:
6124 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
6125 if (value == (bfd_vma) -1)
6127 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6130 overflowed_p = mips_elf_overflow_p (value, 16);
6133 case R_MIPS_GOT_OFST:
6134 mips_elf_got_page (abfd, info, symbol + addend, &value);
6135 overflowed_p = mips_elf_overflow_p (value, 16);
6139 value = symbol - addend;
6140 value &= howto->dst_mask;
6144 value = mips_elf_higher (addend + symbol);
6145 value &= howto->dst_mask;
6148 case R_MIPS_HIGHEST:
6149 value = mips_elf_highest (addend + symbol);
6150 value &= howto->dst_mask;
6153 case R_MIPS_SCN_DISP:
6154 value = symbol + addend - sec->output_offset;
6155 value &= howto->dst_mask;
6160 /* Both of these may be ignored. R_MIPS_JALR is an optimization
6161 hint; we could improve performance by honoring that hint. */
6162 return bfd_reloc_continue;
6164 case R_MIPS_GNU_VTINHERIT:
6165 case R_MIPS_GNU_VTENTRY:
6166 /* We don't do anything with these at present. */
6167 return bfd_reloc_continue;
6170 /* An unrecognized relocation type. */
6171 return bfd_reloc_notsupported;
6174 /* Store the VALUE for our caller. */
6176 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
6179 /* Obtain the field relocated by RELOCATION. */
6182 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
6183 reloc_howto_type *howto;
6184 const Elf_Internal_Rela *relocation;
6189 bfd_byte *location = contents + relocation->r_offset;
6191 /* Obtain the bytes. */
6192 x = bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location);
6194 if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
6195 || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
6196 && bfd_little_endian (input_bfd))
6197 /* The two 16-bit words will be reversed on a little-endian
6198 system. See mips_elf_perform_relocation for more details. */
6199 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
6204 /* It has been determined that the result of the RELOCATION is the
6205 VALUE. Use HOWTO to place VALUE into the output file at the
6206 appropriate position. The SECTION is the section to which the
6207 relocation applies. If REQUIRE_JALX is true, then the opcode used
6208 for the relocation must be either JAL or JALX, and it is
6209 unconditionally converted to JALX.
6211 Returns false if anything goes wrong. */
6214 mips_elf_perform_relocation (info, howto, relocation, value,
6215 input_bfd, input_section,
6216 contents, require_jalx)
6217 struct bfd_link_info *info;
6218 reloc_howto_type *howto;
6219 const Elf_Internal_Rela *relocation;
6222 asection *input_section;
6224 boolean require_jalx;
6228 int r_type = ELF32_R_TYPE (relocation->r_info);
6230 /* Figure out where the relocation is occurring. */
6231 location = contents + relocation->r_offset;
6233 /* Obtain the current value. */
6234 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
6236 /* Clear the field we are setting. */
6237 x &= ~howto->dst_mask;
6239 /* If this is the R_MIPS16_26 relocation, we must store the
6240 value in a funny way. */
6241 if (r_type == R_MIPS16_26)
6243 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
6244 Most mips16 instructions are 16 bits, but these instructions
6247 The format of these instructions is:
6249 +--------------+--------------------------------+
6250 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
6251 +--------------+--------------------------------+
6253 +-----------------------------------------------+
6255 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
6256 Note that the immediate value in the first word is swapped.
6258 When producing a relocateable object file, R_MIPS16_26 is
6259 handled mostly like R_MIPS_26. In particular, the addend is
6260 stored as a straight 26-bit value in a 32-bit instruction.
6261 (gas makes life simpler for itself by never adjusting a
6262 R_MIPS16_26 reloc to be against a section, so the addend is
6263 always zero). However, the 32 bit instruction is stored as 2
6264 16-bit values, rather than a single 32-bit value. In a
6265 big-endian file, the result is the same; in a little-endian
6266 file, the two 16-bit halves of the 32 bit value are swapped.
6267 This is so that a disassembler can recognize the jal
6270 When doing a final link, R_MIPS16_26 is treated as a 32 bit
6271 instruction stored as two 16-bit values. The addend A is the
6272 contents of the targ26 field. The calculation is the same as
6273 R_MIPS_26. When storing the calculated value, reorder the
6274 immediate value as shown above, and don't forget to store the
6275 value as two 16-bit values.
6277 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
6281 +--------+----------------------+
6285 +--------+----------------------+
6288 +----------+------+-------------+
6292 +----------+--------------------+
6293 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
6294 ((sub1 << 16) | sub2)).
6296 When producing a relocateable object file, the calculation is
6297 (((A < 2) | (P & 0xf0000000) + S) >> 2)
6298 When producing a fully linked file, the calculation is
6299 let R = (((A < 2) | (P & 0xf0000000) + S) >> 2)
6300 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
6302 if (!info->relocateable)
6303 /* Shuffle the bits according to the formula above. */
6304 value = (((value & 0x1f0000) << 5)
6305 | ((value & 0x3e00000) >> 5)
6306 | (value & 0xffff));
6309 else if (r_type == R_MIPS16_GPREL)
6311 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
6312 mode. A typical instruction will have a format like this:
6314 +--------------+--------------------------------+
6315 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
6316 +--------------+--------------------------------+
6317 ! Major ! rx ! ry ! Imm 4:0 !
6318 +--------------+--------------------------------+
6320 EXTEND is the five bit value 11110. Major is the instruction
6323 This is handled exactly like R_MIPS_GPREL16, except that the
6324 addend is retrieved and stored as shown in this diagram; that
6325 is, the Imm fields above replace the V-rel16 field.
6327 All we need to do here is shuffle the bits appropriately. As
6328 above, the two 16-bit halves must be swapped on a
6329 little-endian system. */
6330 value = (((value & 0x7e0) << 16)
6331 | ((value & 0xf800) << 5)
6335 /* Set the field. */
6336 x |= (value & howto->dst_mask);
6338 /* If required, turn JAL into JALX. */
6342 bfd_vma opcode = x >> 26;
6343 bfd_vma jalx_opcode;
6345 /* Check to see if the opcode is already JAL or JALX. */
6346 if (r_type == R_MIPS16_26)
6348 ok = ((opcode == 0x6) || (opcode == 0x7));
6353 ok = ((opcode == 0x3) || (opcode == 0x1d));
6357 /* If the opcode is not JAL or JALX, there's a problem. */
6360 (*_bfd_error_handler)
6361 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
6362 bfd_get_filename (input_bfd),
6363 input_section->name,
6364 (unsigned long) relocation->r_offset);
6365 bfd_set_error (bfd_error_bad_value);
6369 /* Make this the JALX opcode. */
6370 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
6373 /* Swap the high- and low-order 16 bits on little-endian systems
6374 when doing a MIPS16 relocation. */
6375 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
6376 && bfd_little_endian (input_bfd))
6377 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
6379 /* Put the value into the output. */
6380 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
6384 /* Returns true if SECTION is a MIPS16 stub section. */
6387 mips_elf_stub_section_p (abfd, section)
6388 bfd *abfd ATTRIBUTE_UNUSED;
6391 const char *name = bfd_get_section_name (abfd, section);
6393 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
6394 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
6395 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
6398 /* Relocate a MIPS ELF section. */
6401 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
6402 contents, relocs, local_syms, local_sections)
6404 struct bfd_link_info *info;
6406 asection *input_section;
6408 Elf_Internal_Rela *relocs;
6409 Elf_Internal_Sym *local_syms;
6410 asection **local_sections;
6412 Elf_Internal_Rela *rel;
6413 const Elf_Internal_Rela *relend;
6415 bfd_vma last_hi16_addend;
6416 boolean use_saved_addend_p = false;
6417 boolean last_hi16_addend_valid_p = false;
6418 struct elf_backend_data *bed;
6420 bed = get_elf_backend_data (output_bfd);
6421 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
6422 for (rel = relocs; rel < relend; ++rel)
6426 reloc_howto_type *howto;
6427 boolean require_jalx;
6428 /* True if the relocation is a RELA relocation, rather than a
6430 boolean rela_relocation_p = true;
6431 int r_type = ELF32_R_TYPE (rel->r_info);
6433 /* Find the relocation howto for this relocation. */
6434 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
6435 /* Some 32-bit code uses R_MIPS_64. In particular, people use
6436 64-bit code, but make sure all their addresses are in the
6437 lowermost or uppermost 32-bit section of the 64-bit address
6438 space. Thus, when they use an R_MIPS_64 they mean what is
6439 usually meant by R_MIPS_32, with the exception that the
6440 stored value is sign-extended to 64 bits. */
6441 howto = elf_mips_howto_table + R_MIPS_32;
6443 howto = mips_rtype_to_howto (r_type);
6445 if (!use_saved_addend_p)
6447 Elf_Internal_Shdr *rel_hdr;
6449 /* If these relocations were originally of the REL variety,
6450 we must pull the addend out of the field that will be
6451 relocated. Otherwise, we simply use the contents of the
6452 RELA relocation. To determine which flavor or relocation
6453 this is, we depend on the fact that the INPUT_SECTION's
6454 REL_HDR is read before its REL_HDR2. */
6455 rel_hdr = &elf_section_data (input_section)->rel_hdr;
6456 if ((size_t) (rel - relocs)
6457 >= (rel_hdr->sh_size / rel_hdr->sh_entsize
6458 * bed->s->int_rels_per_ext_rel))
6459 rel_hdr = elf_section_data (input_section)->rel_hdr2;
6460 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
6462 /* Note that this is a REL relocation. */
6463 rela_relocation_p = false;
6465 /* Get the addend, which is stored in the input file. */
6466 addend = mips_elf_obtain_contents (howto,
6470 addend &= howto->src_mask;
6472 /* For some kinds of relocations, the ADDEND is a
6473 combination of the addend stored in two different
6475 if (r_type == R_MIPS_HI16
6476 || (r_type == R_MIPS_GOT16
6477 && mips_elf_local_relocation_p (input_bfd, rel,
6481 const Elf_Internal_Rela *lo16_relocation;
6482 reloc_howto_type *lo16_howto;
6484 /* The combined value is the sum of the HI16 addend,
6485 left-shifted by sixteen bits, and the LO16
6486 addend, sign extended. (Usually, the code does
6487 a `lui' of the HI16 value, and then an `addiu' of
6490 Scan ahead to find a matching R_MIPS_LO16
6493 = mips_elf_next_lo16_relocation (rel, relend);
6494 if (lo16_relocation == NULL)
6497 /* Obtain the addend kept there. */
6498 lo16_howto = mips_rtype_to_howto (R_MIPS_LO16);
6499 l = mips_elf_obtain_contents (lo16_howto,
6501 input_bfd, contents);
6502 l &= lo16_howto->src_mask;
6503 l = mips_elf_sign_extend (l, 16);
6505 /* Save the high-order bit for later. When we
6506 encounter the R_MIPS_LO16 relocation we will need
6509 last_hi16_addend = addend;
6510 last_hi16_addend_valid_p = true;
6512 /* Compute the combined addend. */
6515 else if (r_type == R_MIPS_LO16)
6517 /* Used the saved HI16 addend. */
6518 if (!last_hi16_addend_valid_p)
6520 bfd_set_error (bfd_error_bad_value);
6523 addend |= last_hi16_addend;
6525 else if (r_type == R_MIPS16_GPREL)
6527 /* The addend is scrambled in the object file. See
6528 mips_elf_perform_relocation for details on the
6530 addend = (((addend & 0x1f0000) >> 5)
6531 | ((addend & 0x7e00000) >> 16)
6536 addend = rel->r_addend;
6539 if (info->relocateable)
6541 Elf_Internal_Sym *sym;
6542 unsigned long r_symndx;
6544 /* Since we're just relocating, all we need to do is copy
6545 the relocations back out to the object file, unless
6546 they're against a section symbol, in which case we need
6547 to adjust by the section offset, or unless they're GP
6548 relative in which case we need to adjust by the amount
6549 that we're adjusting GP in this relocateable object. */
6551 if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections))
6552 /* There's nothing to do for non-local relocations. */
6555 if (r_type == R_MIPS16_GPREL
6556 || r_type == R_MIPS_GPREL16
6557 || r_type == R_MIPS_GPREL32)
6558 addend -= (_bfd_get_gp_value (output_bfd)
6559 - _bfd_get_gp_value (input_bfd));
6560 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26)
6561 /* The addend is stored without its two least
6562 significant bits (which are always zero.) In a
6563 non-relocateable link, calculate_relocation will do
6564 this shift; here, we must do it ourselves. */
6567 r_symndx = ELF32_R_SYM (rel->r_info);
6568 sym = local_syms + r_symndx;
6569 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6570 /* Adjust the addend appropriately. */
6571 addend += local_sections[r_symndx]->output_offset;
6573 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
6574 then we only want to write out the high-order 16 bits.
6575 The subsequent R_MIPS_LO16 will handle the low-order bits. */
6576 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16)
6577 addend = mips_elf_high (addend);
6578 /* If the relocation is for an R_MIPS_26 relocation, then
6579 the two low-order bits are not stored in the object file;
6580 they are implicitly zero. */
6581 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26)
6584 if (rela_relocation_p)
6585 /* If this is a RELA relocation, just update the addend.
6586 We have to cast away constness for REL. */
6587 rel->r_addend = addend;
6590 /* Otherwise, we have to write the value back out. Note
6591 that we use the source mask, rather than the
6592 destination mask because the place to which we are
6593 writing will be source of the addend in the final
6595 addend &= howto->src_mask;
6596 if (!mips_elf_perform_relocation (info, howto, rel, addend,
6597 input_bfd, input_section,
6602 /* Go on to the next relocation. */
6606 /* In the N32 and 64-bit ABIs there may be multiple consecutive
6607 relocations for the same offset. In that case we are
6608 supposed to treat the output of each relocation as the addend
6610 if (rel + 1 < relend
6611 && rel->r_offset == rel[1].r_offset
6612 && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
6613 use_saved_addend_p = true;
6615 use_saved_addend_p = false;
6617 /* Figure out what value we are supposed to relocate. */
6618 switch (mips_elf_calculate_relocation (output_bfd,
6631 case bfd_reloc_continue:
6632 /* There's nothing to do. */
6635 case bfd_reloc_undefined:
6636 /* mips_elf_calculate_relocation already called the
6637 undefined_symbol callback. There's no real point in
6638 trying to perform the relocation at this point, so we
6639 just skip ahead to the next relocation. */
6642 case bfd_reloc_notsupported:
6646 case bfd_reloc_overflow:
6647 if (use_saved_addend_p)
6648 /* Ignore overflow until we reach the last relocation for
6649 a given location. */
6653 BFD_ASSERT (name != NULL);
6654 if (! ((*info->callbacks->reloc_overflow)
6655 (info, name, howto->name, (bfd_vma) 0,
6656 input_bfd, input_section, rel->r_offset)))
6669 /* If we've got another relocation for the address, keep going
6670 until we reach the last one. */
6671 if (use_saved_addend_p)
6677 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
6678 /* See the comment above about using R_MIPS_64 in the 32-bit
6679 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
6680 that calculated the right value. Now, however, we
6681 sign-extend the 32-bit result to 64-bits, and store it as a
6682 64-bit value. We are especially generous here in that we
6683 go to extreme lengths to support this usage on systems with
6684 only a 32-bit VMA. */
6687 /* Just sign-extend the value, and then fall through to the
6688 normal case, using the R_MIPS_64 howto. That will store
6689 the 64-bit value into a 64-bit area. */
6690 value = mips_elf_sign_extend (value, 64);
6691 howto = elf_mips_howto_table + R_MIPS_64;
6693 /* In the 32-bit VMA case, we must handle sign-extension and
6694 endianness manually. */
6699 if (value & 0x80000000)
6700 sign_bits = 0xffffffff;
6704 /* If only a 32-bit VMA is available do two separate
6706 if (bfd_big_endian (input_bfd))
6708 /* Store the sign-bits (which are most significant)
6710 low_bits = sign_bits;
6716 high_bits = sign_bits;
6718 bfd_put_32 (input_bfd, low_bits,
6719 contents + rel->r_offset);
6720 bfd_put_32 (input_bfd, high_bits,
6721 contents + rel->r_offset + 4);
6726 /* Actually perform the relocation. */
6727 if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
6728 input_section, contents,
6736 /* This hook function is called before the linker writes out a global
6737 symbol. We mark symbols as small common if appropriate. This is
6738 also where we undo the increment of the value for a mips16 symbol. */
6742 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
6743 bfd *abfd ATTRIBUTE_UNUSED;
6744 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6745 const char *name ATTRIBUTE_UNUSED;
6746 Elf_Internal_Sym *sym;
6747 asection *input_sec;
6749 /* If we see a common symbol, which implies a relocatable link, then
6750 if a symbol was small common in an input file, mark it as small
6751 common in the output file. */
6752 if (sym->st_shndx == SHN_COMMON
6753 && strcmp (input_sec->name, ".scommon") == 0)
6754 sym->st_shndx = SHN_MIPS_SCOMMON;
6756 if (sym->st_other == STO_MIPS16
6757 && (sym->st_value & 1) != 0)
6763 /* Functions for the dynamic linker. */
6765 /* The name of the dynamic interpreter. This is put in the .interp
6768 #define ELF_DYNAMIC_INTERPRETER(abfd) \
6769 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
6770 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
6771 : "/usr/lib/libc.so.1")
6773 /* Create dynamic sections when linking against a dynamic object. */
6776 _bfd_mips_elf_create_dynamic_sections (abfd, info)
6778 struct bfd_link_info *info;
6780 struct elf_link_hash_entry *h;
6782 register asection *s;
6783 const char * const *namep;
6785 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
6786 | SEC_LINKER_CREATED | SEC_READONLY);
6788 /* Mips ABI requests the .dynamic section to be read only. */
6789 s = bfd_get_section_by_name (abfd, ".dynamic");
6792 if (! bfd_set_section_flags (abfd, s, flags))
6796 /* We need to create .got section. */
6797 if (! mips_elf_create_got_section (abfd, info))
6800 /* Create the .msym section on IRIX6. It is used by the dynamic
6801 linker to speed up dynamic relocations, and to avoid computing
6802 the ELF hash for symbols. */
6803 if (IRIX_COMPAT (abfd) == ict_irix6
6804 && !mips_elf_create_msym_section (abfd))
6807 /* Create .stub section. */
6808 if (bfd_get_section_by_name (abfd,
6809 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
6811 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
6813 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
6814 || ! bfd_set_section_alignment (abfd, s,
6815 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6819 if (IRIX_COMPAT (abfd) == ict_irix5
6821 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
6823 s = bfd_make_section (abfd, ".rld_map");
6825 || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY)
6826 || ! bfd_set_section_alignment (abfd, s,
6827 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6831 /* On IRIX5, we adjust add some additional symbols and change the
6832 alignments of several sections. There is no ABI documentation
6833 indicating that this is necessary on IRIX6, nor any evidence that
6834 the linker takes such action. */
6835 if (IRIX_COMPAT (abfd) == ict_irix5)
6837 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
6840 if (! (_bfd_generic_link_add_one_symbol
6841 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
6842 (bfd_vma) 0, (const char *) NULL, false,
6843 get_elf_backend_data (abfd)->collect,
6844 (struct bfd_link_hash_entry **) &h)))
6846 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6847 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6848 h->type = STT_SECTION;
6850 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6854 /* We need to create a .compact_rel section. */
6855 if (! mips_elf_create_compact_rel_section (abfd, info))
6858 /* Change aligments of some sections. */
6859 s = bfd_get_section_by_name (abfd, ".hash");
6861 bfd_set_section_alignment (abfd, s, 4);
6862 s = bfd_get_section_by_name (abfd, ".dynsym");
6864 bfd_set_section_alignment (abfd, s, 4);
6865 s = bfd_get_section_by_name (abfd, ".dynstr");
6867 bfd_set_section_alignment (abfd, s, 4);
6868 s = bfd_get_section_by_name (abfd, ".reginfo");
6870 bfd_set_section_alignment (abfd, s, 4);
6871 s = bfd_get_section_by_name (abfd, ".dynamic");
6873 bfd_set_section_alignment (abfd, s, 4);
6879 if (! (_bfd_generic_link_add_one_symbol
6880 (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
6881 (bfd_vma) 0, (const char *) NULL, false,
6882 get_elf_backend_data (abfd)->collect,
6883 (struct bfd_link_hash_entry **) &h)))
6885 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6886 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6887 h->type = STT_SECTION;
6889 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6892 if (! mips_elf_hash_table (info)->use_rld_obj_head)
6894 /* __rld_map is a four byte word located in the .data section
6895 and is filled in by the rtld to contain a pointer to
6896 the _r_debug structure. Its symbol value will be set in
6897 mips_elf_finish_dynamic_symbol. */
6898 s = bfd_get_section_by_name (abfd, ".rld_map");
6899 BFD_ASSERT (s != NULL);
6902 if (! (_bfd_generic_link_add_one_symbol
6903 (info, abfd, "__rld_map", BSF_GLOBAL, s,
6904 (bfd_vma) 0, (const char *) NULL, false,
6905 get_elf_backend_data (abfd)->collect,
6906 (struct bfd_link_hash_entry **) &h)))
6908 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6909 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6910 h->type = STT_OBJECT;
6912 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6920 /* Create the .compact_rel section. */
6923 mips_elf_create_compact_rel_section (abfd, info)
6925 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6928 register asection *s;
6930 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
6932 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
6935 s = bfd_make_section (abfd, ".compact_rel");
6937 || ! bfd_set_section_flags (abfd, s, flags)
6938 || ! bfd_set_section_alignment (abfd, s,
6939 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6942 s->_raw_size = sizeof (Elf32_External_compact_rel);
6948 /* Create the .got section to hold the global offset table. */
6951 mips_elf_create_got_section (abfd, info)
6953 struct bfd_link_info *info;
6956 register asection *s;
6957 struct elf_link_hash_entry *h;
6958 struct mips_got_info *g;
6960 /* This function may be called more than once. */
6961 if (mips_elf_got_section (abfd))
6964 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
6965 | SEC_LINKER_CREATED);
6967 s = bfd_make_section (abfd, ".got");
6969 || ! bfd_set_section_flags (abfd, s, flags)
6970 || ! bfd_set_section_alignment (abfd, s, 4))
6973 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
6974 linker script because we don't want to define the symbol if we
6975 are not creating a global offset table. */
6977 if (! (_bfd_generic_link_add_one_symbol
6978 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
6979 (bfd_vma) 0, (const char *) NULL, false,
6980 get_elf_backend_data (abfd)->collect,
6981 (struct bfd_link_hash_entry **) &h)))
6983 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6984 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6985 h->type = STT_OBJECT;
6988 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
6991 /* The first several global offset table entries are reserved. */
6992 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
6994 g = (struct mips_got_info *) bfd_alloc (abfd,
6995 sizeof (struct mips_got_info));
6998 g->global_gotsym = NULL;
6999 g->local_gotno = MIPS_RESERVED_GOTNO;
7000 g->assigned_gotno = MIPS_RESERVED_GOTNO;
7001 if (elf_section_data (s) == NULL)
7004 (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
7005 if (elf_section_data (s) == NULL)
7008 elf_section_data (s)->tdata = (PTR) g;
7009 elf_section_data (s)->this_hdr.sh_flags
7010 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
7015 /* Returns the .msym section for ABFD, creating it if it does not
7016 already exist. Returns NULL to indicate error. */
7019 mips_elf_create_msym_section (abfd)
7024 s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
7027 s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
7029 || !bfd_set_section_flags (abfd, s,
7033 | SEC_LINKER_CREATED
7035 || !bfd_set_section_alignment (abfd, s,
7036 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7043 /* Add room for N relocations to the .rel.dyn section in ABFD. */
7046 mips_elf_allocate_dynamic_relocations (abfd, n)
7052 s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
7053 BFD_ASSERT (s != NULL);
7055 if (s->_raw_size == 0)
7057 /* Make room for a null element. */
7058 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
7061 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
7064 /* Look through the relocs for a section during the first phase, and
7065 allocate space in the global offset table. */
7068 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
7070 struct bfd_link_info *info;
7072 const Elf_Internal_Rela *relocs;
7076 Elf_Internal_Shdr *symtab_hdr;
7077 struct elf_link_hash_entry **sym_hashes;
7078 struct mips_got_info *g;
7080 const Elf_Internal_Rela *rel;
7081 const Elf_Internal_Rela *rel_end;
7084 struct elf_backend_data *bed;
7086 if (info->relocateable)
7089 dynobj = elf_hash_table (info)->dynobj;
7090 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7091 sym_hashes = elf_sym_hashes (abfd);
7092 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
7094 /* Check for the mips16 stub sections. */
7096 name = bfd_get_section_name (abfd, sec);
7097 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
7099 unsigned long r_symndx;
7101 /* Look at the relocation information to figure out which symbol
7104 r_symndx = ELF32_R_SYM (relocs->r_info);
7106 if (r_symndx < extsymoff
7107 || sym_hashes[r_symndx - extsymoff] == NULL)
7111 /* This stub is for a local symbol. This stub will only be
7112 needed if there is some relocation in this BFD, other
7113 than a 16 bit function call, which refers to this symbol. */
7114 for (o = abfd->sections; o != NULL; o = o->next)
7116 Elf_Internal_Rela *sec_relocs;
7117 const Elf_Internal_Rela *r, *rend;
7119 /* We can ignore stub sections when looking for relocs. */
7120 if ((o->flags & SEC_RELOC) == 0
7121 || o->reloc_count == 0
7122 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
7123 sizeof FN_STUB - 1) == 0
7124 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
7125 sizeof CALL_STUB - 1) == 0
7126 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
7127 sizeof CALL_FP_STUB - 1) == 0)
7130 sec_relocs = (_bfd_elf32_link_read_relocs
7131 (abfd, o, (PTR) NULL,
7132 (Elf_Internal_Rela *) NULL,
7133 info->keep_memory));
7134 if (sec_relocs == NULL)
7137 rend = sec_relocs + o->reloc_count;
7138 for (r = sec_relocs; r < rend; r++)
7139 if (ELF32_R_SYM (r->r_info) == r_symndx
7140 && ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
7143 if (! info->keep_memory)
7152 /* There is no non-call reloc for this stub, so we do
7153 not need it. Since this function is called before
7154 the linker maps input sections to output sections, we
7155 can easily discard it by setting the SEC_EXCLUDE
7157 sec->flags |= SEC_EXCLUDE;
7161 /* Record this stub in an array of local symbol stubs for
7163 if (elf_tdata (abfd)->local_stubs == NULL)
7165 unsigned long symcount;
7168 if (elf_bad_symtab (abfd))
7169 symcount = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
7171 symcount = symtab_hdr->sh_info;
7172 n = (asection **) bfd_zalloc (abfd,
7173 symcount * sizeof (asection *));
7176 elf_tdata (abfd)->local_stubs = n;
7179 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
7181 /* We don't need to set mips16_stubs_seen in this case.
7182 That flag is used to see whether we need to look through
7183 the global symbol table for stubs. We don't need to set
7184 it here, because we just have a local stub. */
7188 struct mips_elf_link_hash_entry *h;
7190 h = ((struct mips_elf_link_hash_entry *)
7191 sym_hashes[r_symndx - extsymoff]);
7193 /* H is the symbol this stub is for. */
7196 mips_elf_hash_table (info)->mips16_stubs_seen = true;
7199 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
7200 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
7202 unsigned long r_symndx;
7203 struct mips_elf_link_hash_entry *h;
7206 /* Look at the relocation information to figure out which symbol
7209 r_symndx = ELF32_R_SYM (relocs->r_info);
7211 if (r_symndx < extsymoff
7212 || sym_hashes[r_symndx - extsymoff] == NULL)
7214 /* This stub was actually built for a static symbol defined
7215 in the same file. We assume that all static symbols in
7216 mips16 code are themselves mips16, so we can simply
7217 discard this stub. Since this function is called before
7218 the linker maps input sections to output sections, we can
7219 easily discard it by setting the SEC_EXCLUDE flag. */
7220 sec->flags |= SEC_EXCLUDE;
7224 h = ((struct mips_elf_link_hash_entry *)
7225 sym_hashes[r_symndx - extsymoff]);
7227 /* H is the symbol this stub is for. */
7229 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
7230 loc = &h->call_fp_stub;
7232 loc = &h->call_stub;
7234 /* If we already have an appropriate stub for this function, we
7235 don't need another one, so we can discard this one. Since
7236 this function is called before the linker maps input sections
7237 to output sections, we can easily discard it by setting the
7238 SEC_EXCLUDE flag. We can also discard this section if we
7239 happen to already know that this is a mips16 function; it is
7240 not necessary to check this here, as it is checked later, but
7241 it is slightly faster to check now. */
7242 if (*loc != NULL || h->root.other == STO_MIPS16)
7244 sec->flags |= SEC_EXCLUDE;
7249 mips_elf_hash_table (info)->mips16_stubs_seen = true;
7259 sgot = mips_elf_got_section (dynobj);
7264 BFD_ASSERT (elf_section_data (sgot) != NULL);
7265 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
7266 BFD_ASSERT (g != NULL);
7271 bed = get_elf_backend_data (abfd);
7272 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
7273 for (rel = relocs; rel < rel_end; ++rel)
7275 unsigned long r_symndx;
7277 struct elf_link_hash_entry *h;
7279 r_symndx = ELF32_R_SYM (rel->r_info);
7280 r_type = ELF32_R_TYPE (rel->r_info);
7282 if (r_symndx < extsymoff)
7286 h = sym_hashes[r_symndx - extsymoff];
7288 /* This may be an indirect symbol created because of a version. */
7291 while (h->root.type == bfd_link_hash_indirect)
7292 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7296 /* Some relocs require a global offset table. */
7297 if (dynobj == NULL || sgot == NULL)
7303 case R_MIPS_CALL_HI16:
7304 case R_MIPS_CALL_LO16:
7305 case R_MIPS_GOT_HI16:
7306 case R_MIPS_GOT_LO16:
7307 case R_MIPS_GOT_PAGE:
7308 case R_MIPS_GOT_OFST:
7309 case R_MIPS_GOT_DISP:
7311 elf_hash_table (info)->dynobj = dynobj = abfd;
7312 if (! mips_elf_create_got_section (dynobj, info))
7314 g = mips_elf_got_info (dynobj, &sgot);
7321 && (info->shared || h != NULL)
7322 && (sec->flags & SEC_ALLOC) != 0)
7323 elf_hash_table (info)->dynobj = dynobj = abfd;
7331 if (!h && (r_type == R_MIPS_CALL_LO16
7332 || r_type == R_MIPS_GOT_LO16
7333 || r_type == R_MIPS_GOT_DISP))
7335 /* We may need a local GOT entry for this relocation. We
7336 don't count R_MIPS_GOT_PAGE because we can estimate the
7337 maximum number of pages needed by looking at the size of
7338 the segment. Similar comments apply to R_MIPS_GOT16. We
7339 don't count R_MIPS_GOT_HI16, or R_MIPS_CALL_HI16 because
7340 these are always followed by an R_MIPS_GOT_LO16 or
7343 This estimation is very conservative since we can merge
7344 duplicate entries in the GOT. In order to be less
7345 conservative, we could actually build the GOT here,
7346 rather than in relocate_section. */
7348 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
7356 (*_bfd_error_handler)
7357 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
7358 bfd_get_filename (abfd), (unsigned long) rel->r_offset);
7359 bfd_set_error (bfd_error_bad_value);
7364 case R_MIPS_CALL_HI16:
7365 case R_MIPS_CALL_LO16:
7368 /* This symbol requires a global offset table entry. */
7369 if (!mips_elf_record_global_got_symbol (h, info, g))
7372 /* We need a stub, not a plt entry for the undefined
7373 function. But we record it as if it needs plt. See
7374 elf_adjust_dynamic_symbol in elflink.h. */
7375 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
7381 case R_MIPS_GOT_HI16:
7382 case R_MIPS_GOT_LO16:
7383 case R_MIPS_GOT_DISP:
7384 /* This symbol requires a global offset table entry. */
7385 if (h && !mips_elf_record_global_got_symbol (h, info, g))
7392 if ((info->shared || h != NULL)
7393 && (sec->flags & SEC_ALLOC) != 0)
7397 const char *name = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
7399 sreloc = bfd_get_section_by_name (dynobj, name);
7402 sreloc = bfd_make_section (dynobj, name);
7404 || ! bfd_set_section_flags (dynobj, sreloc,
7409 | SEC_LINKER_CREATED
7411 || ! bfd_set_section_alignment (dynobj, sreloc,
7417 /* When creating a shared object, we must copy these
7418 reloc types into the output file as R_MIPS_REL32
7419 relocs. We make room for this reloc in the
7420 .rel.dyn reloc section. */
7421 mips_elf_allocate_dynamic_relocations (dynobj, 1);
7424 struct mips_elf_link_hash_entry *hmips;
7426 /* We only need to copy this reloc if the symbol is
7427 defined in a dynamic object. */
7428 hmips = (struct mips_elf_link_hash_entry *) h;
7429 ++hmips->possibly_dynamic_relocs;
7432 /* Even though we don't directly need a GOT entry for
7433 this symbol, a symbol must have a dynamic symbol
7434 table index greater that DT_MIPS_GOTSYM if there are
7435 dynamic relocations against it. */
7437 && !mips_elf_record_global_got_symbol (h, info, g))
7441 if (SGI_COMPAT (dynobj))
7442 mips_elf_hash_table (info)->compact_rel_size +=
7443 sizeof (Elf32_External_crinfo);
7447 case R_MIPS_GPREL16:
7448 case R_MIPS_LITERAL:
7449 case R_MIPS_GPREL32:
7450 if (SGI_COMPAT (dynobj))
7451 mips_elf_hash_table (info)->compact_rel_size +=
7452 sizeof (Elf32_External_crinfo);
7455 /* This relocation describes the C++ object vtable hierarchy.
7456 Reconstruct it for later use during GC. */
7457 case R_MIPS_GNU_VTINHERIT:
7458 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
7462 /* This relocation describes which C++ vtable entries are actually
7463 used. Record for later use during GC. */
7464 case R_MIPS_GNU_VTENTRY:
7465 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
7473 /* If this reloc is not a 16 bit call, and it has a global
7474 symbol, then we will need the fn_stub if there is one.
7475 References from a stub section do not count. */
7477 && r_type != R_MIPS16_26
7478 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
7479 sizeof FN_STUB - 1) != 0
7480 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
7481 sizeof CALL_STUB - 1) != 0
7482 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
7483 sizeof CALL_FP_STUB - 1) != 0)
7485 struct mips_elf_link_hash_entry *mh;
7487 mh = (struct mips_elf_link_hash_entry *) h;
7488 mh->need_fn_stub = true;
7495 /* Return the section that should be marked against GC for a given
7499 _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
7501 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7502 Elf_Internal_Rela *rel;
7503 struct elf_link_hash_entry *h;
7504 Elf_Internal_Sym *sym;
7506 /* ??? Do mips16 stub sections need to be handled special? */
7510 switch (ELF32_R_TYPE (rel->r_info))
7512 case R_MIPS_GNU_VTINHERIT:
7513 case R_MIPS_GNU_VTENTRY:
7517 switch (h->root.type)
7519 case bfd_link_hash_defined:
7520 case bfd_link_hash_defweak:
7521 return h->root.u.def.section;
7523 case bfd_link_hash_common:
7524 return h->root.u.c.p->section;
7533 if (!(elf_bad_symtab (abfd)
7534 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
7535 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
7536 && sym->st_shndx != SHN_COMMON))
7538 return bfd_section_from_elf_index (abfd, sym->st_shndx);
7545 /* Update the got entry reference counts for the section being removed. */
7548 _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
7549 bfd *abfd ATTRIBUTE_UNUSED;
7550 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7551 asection *sec ATTRIBUTE_UNUSED;
7552 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
7555 Elf_Internal_Shdr *symtab_hdr;
7556 struct elf_link_hash_entry **sym_hashes;
7557 bfd_signed_vma *local_got_refcounts;
7558 const Elf_Internal_Rela *rel, *relend;
7559 unsigned long r_symndx;
7560 struct elf_link_hash_entry *h;
7562 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7563 sym_hashes = elf_sym_hashes (abfd);
7564 local_got_refcounts = elf_local_got_refcounts (abfd);
7566 relend = relocs + sec->reloc_count;
7567 for (rel = relocs; rel < relend; rel++)
7568 switch (ELF32_R_TYPE (rel->r_info))
7572 case R_MIPS_CALL_HI16:
7573 case R_MIPS_CALL_LO16:
7574 case R_MIPS_GOT_HI16:
7575 case R_MIPS_GOT_LO16:
7576 /* ??? It would seem that the existing MIPS code does no sort
7577 of reference counting or whatnot on its GOT and PLT entries,
7578 so it is not possible to garbage collect them at this time. */
7590 /* Adjust a symbol defined by a dynamic object and referenced by a
7591 regular object. The current definition is in some section of the
7592 dynamic object, but we're not including those sections. We have to
7593 change the definition to something the rest of the link can
7597 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
7598 struct bfd_link_info *info;
7599 struct elf_link_hash_entry *h;
7602 struct mips_elf_link_hash_entry *hmips;
7605 dynobj = elf_hash_table (info)->dynobj;
7607 /* Make sure we know what is going on here. */
7608 BFD_ASSERT (dynobj != NULL
7609 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
7610 || h->weakdef != NULL
7611 || ((h->elf_link_hash_flags
7612 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
7613 && (h->elf_link_hash_flags
7614 & ELF_LINK_HASH_REF_REGULAR) != 0
7615 && (h->elf_link_hash_flags
7616 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
7618 /* If this symbol is defined in a dynamic object, we need to copy
7619 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
7621 hmips = (struct mips_elf_link_hash_entry *) h;
7622 if (! info->relocateable
7623 && hmips->possibly_dynamic_relocs != 0
7624 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
7625 mips_elf_allocate_dynamic_relocations (dynobj,
7626 hmips->possibly_dynamic_relocs);
7628 /* For a function, create a stub, if needed. */
7629 if (h->type == STT_FUNC
7630 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
7632 if (! elf_hash_table (info)->dynamic_sections_created)
7635 /* If this symbol is not defined in a regular file, then set
7636 the symbol to the stub location. This is required to make
7637 function pointers compare as equal between the normal
7638 executable and the shared library. */
7639 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
7641 /* We need .stub section. */
7642 s = bfd_get_section_by_name (dynobj,
7643 MIPS_ELF_STUB_SECTION_NAME (dynobj));
7644 BFD_ASSERT (s != NULL);
7646 h->root.u.def.section = s;
7647 h->root.u.def.value = s->_raw_size;
7649 /* XXX Write this stub address somewhere. */
7650 h->plt.offset = s->_raw_size;
7652 /* Make room for this stub code. */
7653 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
7655 /* The last half word of the stub will be filled with the index
7656 of this symbol in .dynsym section. */
7661 /* If this is a weak symbol, and there is a real definition, the
7662 processor independent code will have arranged for us to see the
7663 real definition first, and we can just use the same value. */
7664 if (h->weakdef != NULL)
7666 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
7667 || h->weakdef->root.type == bfd_link_hash_defweak);
7668 h->root.u.def.section = h->weakdef->root.u.def.section;
7669 h->root.u.def.value = h->weakdef->root.u.def.value;
7673 /* This is a reference to a symbol defined by a dynamic object which
7674 is not a function. */
7679 /* This function is called after all the input files have been read,
7680 and the input sections have been assigned to output sections. We
7681 check for any mips16 stub sections that we can discard. */
7683 static boolean mips_elf_check_mips16_stubs
7684 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
7687 _bfd_mips_elf_always_size_sections (output_bfd, info)
7689 struct bfd_link_info *info;
7693 /* The .reginfo section has a fixed size. */
7694 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
7696 bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo));
7698 if (info->relocateable
7699 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
7702 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
7703 mips_elf_check_mips16_stubs,
7709 /* Check the mips16 stubs for a particular symbol, and see if we can
7714 mips_elf_check_mips16_stubs (h, data)
7715 struct mips_elf_link_hash_entry *h;
7716 PTR data ATTRIBUTE_UNUSED;
7718 if (h->fn_stub != NULL
7719 && ! h->need_fn_stub)
7721 /* We don't need the fn_stub; the only references to this symbol
7722 are 16 bit calls. Clobber the size to 0 to prevent it from
7723 being included in the link. */
7724 h->fn_stub->_raw_size = 0;
7725 h->fn_stub->_cooked_size = 0;
7726 h->fn_stub->flags &= ~ SEC_RELOC;
7727 h->fn_stub->reloc_count = 0;
7728 h->fn_stub->flags |= SEC_EXCLUDE;
7731 if (h->call_stub != NULL
7732 && h->root.other == STO_MIPS16)
7734 /* We don't need the call_stub; this is a 16 bit function, so
7735 calls from other 16 bit functions are OK. Clobber the size
7736 to 0 to prevent it from being included in the link. */
7737 h->call_stub->_raw_size = 0;
7738 h->call_stub->_cooked_size = 0;
7739 h->call_stub->flags &= ~ SEC_RELOC;
7740 h->call_stub->reloc_count = 0;
7741 h->call_stub->flags |= SEC_EXCLUDE;
7744 if (h->call_fp_stub != NULL
7745 && h->root.other == STO_MIPS16)
7747 /* We don't need the call_stub; this is a 16 bit function, so
7748 calls from other 16 bit functions are OK. Clobber the size
7749 to 0 to prevent it from being included in the link. */
7750 h->call_fp_stub->_raw_size = 0;
7751 h->call_fp_stub->_cooked_size = 0;
7752 h->call_fp_stub->flags &= ~ SEC_RELOC;
7753 h->call_fp_stub->reloc_count = 0;
7754 h->call_fp_stub->flags |= SEC_EXCLUDE;
7760 /* Set the sizes of the dynamic sections. */
7763 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
7765 struct bfd_link_info *info;
7770 struct mips_got_info *g = NULL;
7772 dynobj = elf_hash_table (info)->dynobj;
7773 BFD_ASSERT (dynobj != NULL);
7775 if (elf_hash_table (info)->dynamic_sections_created)
7777 /* Set the contents of the .interp section to the interpreter. */
7780 s = bfd_get_section_by_name (dynobj, ".interp");
7781 BFD_ASSERT (s != NULL);
7783 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
7785 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
7789 /* The check_relocs and adjust_dynamic_symbol entry points have
7790 determined the sizes of the various dynamic sections. Allocate
7793 for (s = dynobj->sections; s != NULL; s = s->next)
7798 /* It's OK to base decisions on the section name, because none
7799 of the dynobj section names depend upon the input files. */
7800 name = bfd_get_section_name (dynobj, s);
7802 if ((s->flags & SEC_LINKER_CREATED) == 0)
7807 if (strncmp (name, ".rel", 4) == 0)
7809 if (s->_raw_size == 0)
7811 /* We only strip the section if the output section name
7812 has the same name. Otherwise, there might be several
7813 input sections for this output section. FIXME: This
7814 code is probably not needed these days anyhow, since
7815 the linker now does not create empty output sections. */
7816 if (s->output_section != NULL
7818 bfd_get_section_name (s->output_section->owner,
7819 s->output_section)) == 0)
7824 const char *outname;
7827 /* If this relocation section applies to a read only
7828 section, then we probably need a DT_TEXTREL entry.
7829 If the relocation section is .rel.dyn, we always
7830 assert a DT_TEXTREL entry rather than testing whether
7831 there exists a relocation to a read only section or
7833 outname = bfd_get_section_name (output_bfd,
7835 target = bfd_get_section_by_name (output_bfd, outname + 4);
7837 && (target->flags & SEC_READONLY) != 0
7838 && (target->flags & SEC_ALLOC) != 0)
7840 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
7843 /* We use the reloc_count field as a counter if we need
7844 to copy relocs into the output file. */
7846 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
7850 else if (strncmp (name, ".got", 4) == 0)
7853 bfd_size_type loadable_size = 0;
7854 bfd_size_type local_gotno;
7857 BFD_ASSERT (elf_section_data (s) != NULL);
7858 g = (struct mips_got_info *) elf_section_data (s)->tdata;
7859 BFD_ASSERT (g != NULL);
7861 /* Calculate the total loadable size of the output. That
7862 will give us the maximum number of GOT_PAGE entries
7864 for (sub = info->input_bfds; sub; sub = sub->link_next)
7866 asection *subsection;
7868 for (subsection = sub->sections;
7870 subsection = subsection->next)
7872 if ((subsection->flags & SEC_ALLOC) == 0)
7874 loadable_size += (subsection->_raw_size + 0xf) & ~0xf;
7877 loadable_size += MIPS_FUNCTION_STUB_SIZE;
7879 /* Assume there are two loadable segments consisting of
7880 contiguous sections. Is 5 enough? */
7881 local_gotno = (loadable_size >> 16) + 5;
7882 if (IRIX_COMPAT (output_bfd) == ict_irix6)
7883 /* It's possible we will need GOT_PAGE entries as well as
7884 GOT16 entries. Often, these will be able to share GOT
7885 entries, but not always. */
7888 g->local_gotno += local_gotno;
7889 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
7891 /* There has to be a global GOT entry for every symbol with
7892 a dynamic symbol table index of DT_MIPS_GOTSYM or
7893 higher. Therefore, it make sense to put those symbols
7894 that need GOT entries at the end of the symbol table. We
7896 if (!mips_elf_sort_hash_table (info, 1))
7899 if (g->global_gotsym != NULL)
7900 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
7902 /* If there are no global symbols, or none requiring
7903 relocations, then GLOBAL_GOTSYM will be NULL. */
7905 g->global_gotno = i;
7906 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
7908 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
7910 /* Irix rld assumes that the function stub isn't at the end
7911 of .text section. So put a dummy. XXX */
7912 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
7914 else if (! info->shared
7915 && ! mips_elf_hash_table (info)->use_rld_obj_head
7916 && strncmp (name, ".rld_map", 8) == 0)
7918 /* We add a room for __rld_map. It will be filled in by the
7919 rtld to contain a pointer to the _r_debug structure. */
7922 else if (SGI_COMPAT (output_bfd)
7923 && strncmp (name, ".compact_rel", 12) == 0)
7924 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
7925 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
7927 s->_raw_size = (sizeof (Elf32_External_Msym)
7928 * (elf_hash_table (info)->dynsymcount
7929 + bfd_count_sections (output_bfd)));
7930 else if (strncmp (name, ".init", 5) != 0)
7932 /* It's not one of our sections, so don't allocate space. */
7938 _bfd_strip_section_from_output (s);
7942 /* Allocate memory for the section contents. */
7943 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
7944 if (s->contents == NULL && s->_raw_size != 0)
7946 bfd_set_error (bfd_error_no_memory);
7951 if (elf_hash_table (info)->dynamic_sections_created)
7953 /* Add some entries to the .dynamic section. We fill in the
7954 values later, in elf_mips_finish_dynamic_sections, but we
7955 must add the entries now so that we get the correct size for
7956 the .dynamic section. The DT_DEBUG entry is filled in by the
7957 dynamic linker and used by the debugger. */
7960 if (SGI_COMPAT (output_bfd))
7962 /* SGI object has the equivalence of DT_DEBUG in the
7963 DT_MIPS_RLD_MAP entry. */
7964 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
7968 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
7974 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
7978 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
7981 if (bfd_get_section_by_name (dynobj,
7982 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
7984 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
7987 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
7990 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
7994 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
7997 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
8000 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
8002 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
8005 s = bfd_get_section_by_name (dynobj, ".liblist");
8006 BFD_ASSERT (s != NULL);
8008 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
8012 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
8015 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
8019 /* Time stamps in executable files are a bad idea. */
8020 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
8025 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
8030 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
8034 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
8037 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
8040 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
8043 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
8046 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
8049 if (IRIX_COMPAT (dynobj) == ict_irix5
8050 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
8053 if (IRIX_COMPAT (dynobj) == ict_irix6
8054 && (bfd_get_section_by_name
8055 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
8056 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
8059 if (bfd_get_section_by_name (dynobj,
8060 MIPS_ELF_MSYM_SECTION_NAME (dynobj))
8061 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
8068 /* If NAME is one of the special IRIX6 symbols defined by the linker,
8069 adjust it appropriately now. */
8072 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
8073 bfd *abfd ATTRIBUTE_UNUSED;
8075 Elf_Internal_Sym *sym;
8077 /* The linker script takes care of providing names and values for
8078 these, but we must place them into the right sections. */
8079 static const char* const text_section_symbols[] = {
8082 "__dso_displacement",
8084 "__program_header_table",
8088 static const char* const data_section_symbols[] = {
8096 const char* const *p;
8099 for (i = 0; i < 2; ++i)
8100 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
8103 if (strcmp (*p, name) == 0)
8105 /* All of these symbols are given type STT_SECTION by the
8107 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8109 /* The IRIX linker puts these symbols in special sections. */
8111 sym->st_shndx = SHN_MIPS_TEXT;
8113 sym->st_shndx = SHN_MIPS_DATA;
8119 /* Finish up dynamic symbol handling. We set the contents of various
8120 dynamic sections here. */
8123 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
8125 struct bfd_link_info *info;
8126 struct elf_link_hash_entry *h;
8127 Elf_Internal_Sym *sym;
8133 struct mips_got_info *g;
8135 struct mips_elf_link_hash_entry *mh;
8137 dynobj = elf_hash_table (info)->dynobj;
8138 gval = sym->st_value;
8139 mh = (struct mips_elf_link_hash_entry *) h;
8141 if (h->plt.offset != (bfd_vma) -1)
8145 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
8147 /* This symbol has a stub. Set it up. */
8149 BFD_ASSERT (h->dynindx != -1);
8151 s = bfd_get_section_by_name (dynobj,
8152 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8153 BFD_ASSERT (s != NULL);
8155 /* Fill the stub. */
8157 bfd_put_32 (output_bfd, STUB_LW(output_bfd), p);
8159 bfd_put_32 (output_bfd, STUB_MOVE, p);
8162 /* FIXME: Can h->dynindex be more than 64K? */
8163 if (h->dynindx & 0xffff0000)
8166 bfd_put_32 (output_bfd, STUB_JALR, p);
8168 bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p);
8170 BFD_ASSERT (h->plt.offset <= s->_raw_size);
8171 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
8173 /* Mark the symbol as undefined. plt.offset != -1 occurs
8174 only for the referenced symbol. */
8175 sym->st_shndx = SHN_UNDEF;
8177 /* The run-time linker uses the st_value field of the symbol
8178 to reset the global offset table entry for this external
8179 to its stub address when unlinking a shared object. */
8180 gval = s->output_section->vma + s->output_offset + h->plt.offset;
8181 sym->st_value = gval;
8184 BFD_ASSERT (h->dynindx != -1);
8186 sgot = mips_elf_got_section (dynobj);
8187 BFD_ASSERT (sgot != NULL);
8188 BFD_ASSERT (elf_section_data (sgot) != NULL);
8189 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8190 BFD_ASSERT (g != NULL);
8192 /* Run through the global symbol table, creating GOT entries for all
8193 the symbols that need them. */
8194 if (g->global_gotsym != NULL
8195 && h->dynindx >= g->global_gotsym->dynindx)
8201 value = sym->st_value;
8203 /* For an entity defined in a shared object, this will be
8204 NULL. (For functions in shared objects for
8205 which we have created stubs, ST_VALUE will be non-NULL.
8206 That's because such the functions are now no longer defined
8207 in a shared object.) */
8208 value = h->root.u.def.value;
8210 offset = mips_elf_global_got_index (dynobj, h);
8211 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
8214 /* Create a .msym entry, if appropriate. */
8215 smsym = bfd_get_section_by_name (dynobj,
8216 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
8219 Elf32_Internal_Msym msym;
8221 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
8222 /* It is undocumented what the `1' indicates, but IRIX6 uses
8224 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
8225 bfd_mips_elf_swap_msym_out
8227 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
8230 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
8231 name = h->root.root.string;
8232 if (strcmp (name, "_DYNAMIC") == 0
8233 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
8234 sym->st_shndx = SHN_ABS;
8235 else if (strcmp (name, "_DYNAMIC_LINK") == 0)
8237 sym->st_shndx = SHN_ABS;
8238 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8241 else if (SGI_COMPAT (output_bfd))
8243 if (strcmp (name, "_gp_disp") == 0)
8245 sym->st_shndx = SHN_ABS;
8246 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8247 sym->st_value = elf_gp (output_bfd);
8249 else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
8250 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
8252 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8253 sym->st_other = STO_PROTECTED;
8255 sym->st_shndx = SHN_MIPS_DATA;
8257 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
8259 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8260 sym->st_other = STO_PROTECTED;
8261 sym->st_value = mips_elf_hash_table (info)->procedure_count;
8262 sym->st_shndx = SHN_ABS;
8264 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
8266 if (h->type == STT_FUNC)
8267 sym->st_shndx = SHN_MIPS_TEXT;
8268 else if (h->type == STT_OBJECT)
8269 sym->st_shndx = SHN_MIPS_DATA;
8273 /* Handle the IRIX6-specific symbols. */
8274 if (IRIX_COMPAT (output_bfd) == ict_irix6)
8275 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
8277 if (SGI_COMPAT (output_bfd)
8280 if (! mips_elf_hash_table (info)->use_rld_obj_head
8281 && strcmp (name, "__rld_map") == 0)
8283 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
8284 BFD_ASSERT (s != NULL);
8285 sym->st_value = s->output_section->vma + s->output_offset;
8286 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
8287 if (mips_elf_hash_table (info)->rld_value == 0)
8288 mips_elf_hash_table (info)->rld_value = sym->st_value;
8290 else if (mips_elf_hash_table (info)->use_rld_obj_head
8291 && strcmp (name, "__rld_obj_head") == 0)
8293 /* IRIX6 does not use a .rld_map section. */
8294 if (IRIX_COMPAT (output_bfd) == ict_irix5)
8295 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
8297 mips_elf_hash_table (info)->rld_value = sym->st_value;
8301 /* If this is a mips16 symbol, force the value to be even. */
8302 if (sym->st_other == STO_MIPS16
8303 && (sym->st_value & 1) != 0)
8309 /* Finish up the dynamic sections. */
8312 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
8314 struct bfd_link_info *info;
8319 struct mips_got_info *g;
8321 dynobj = elf_hash_table (info)->dynobj;
8323 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8325 sgot = mips_elf_got_section (dynobj);
8330 BFD_ASSERT (elf_section_data (sgot) != NULL);
8331 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8332 BFD_ASSERT (g != NULL);
8335 if (elf_hash_table (info)->dynamic_sections_created)
8339 BFD_ASSERT (sdyn != NULL);
8340 BFD_ASSERT (g != NULL);
8342 for (b = sdyn->contents;
8343 b < sdyn->contents + sdyn->_raw_size;
8344 b += MIPS_ELF_DYN_SIZE (dynobj))
8346 Elf_Internal_Dyn dyn;
8352 /* Read in the current dynamic entry. */
8353 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
8355 /* Assume that we're going to modify it and write it out. */
8361 s = (bfd_get_section_by_name
8363 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
8364 BFD_ASSERT (s != NULL);
8365 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
8369 /* Rewrite DT_STRSZ. */
8371 _bfd_stringtab_size (elf_hash_table (info)->dynstr);
8377 case DT_MIPS_CONFLICT:
8380 case DT_MIPS_LIBLIST:
8383 s = bfd_get_section_by_name (output_bfd, name);
8384 BFD_ASSERT (s != NULL);
8385 dyn.d_un.d_ptr = s->vma;
8388 case DT_MIPS_RLD_VERSION:
8389 dyn.d_un.d_val = 1; /* XXX */
8393 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
8396 case DT_MIPS_CONFLICTNO:
8398 elemsize = sizeof (Elf32_Conflict);
8401 case DT_MIPS_LIBLISTNO:
8403 elemsize = sizeof (Elf32_Lib);
8405 s = bfd_get_section_by_name (output_bfd, name);
8408 if (s->_cooked_size != 0)
8409 dyn.d_un.d_val = s->_cooked_size / elemsize;
8411 dyn.d_un.d_val = s->_raw_size / elemsize;
8417 case DT_MIPS_TIME_STAMP:
8418 time ((time_t *) &dyn.d_un.d_val);
8421 case DT_MIPS_ICHECKSUM:
8426 case DT_MIPS_IVERSION:
8431 case DT_MIPS_BASE_ADDRESS:
8432 s = output_bfd->sections;
8433 BFD_ASSERT (s != NULL);
8434 dyn.d_un.d_ptr = s->vma & ~(0xffff);
8437 case DT_MIPS_LOCAL_GOTNO:
8438 dyn.d_un.d_val = g->local_gotno;
8441 case DT_MIPS_UNREFEXTNO:
8442 /* The index into the dynamic symbol table which is the
8443 entry of the first external symbol that is not
8444 referenced within the same object. */
8445 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
8448 case DT_MIPS_GOTSYM:
8449 if (g->global_gotsym)
8451 dyn.d_un.d_val = g->global_gotsym->dynindx;
8454 /* In case if we don't have global got symbols we default
8455 to setting DT_MIPS_GOTSYM to the same value as
8456 DT_MIPS_SYMTABNO, so we just fall through. */
8458 case DT_MIPS_SYMTABNO:
8460 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
8461 s = bfd_get_section_by_name (output_bfd, name);
8462 BFD_ASSERT (s != NULL);
8464 if (s->_cooked_size != 0)
8465 dyn.d_un.d_val = s->_cooked_size / elemsize;
8467 dyn.d_un.d_val = s->_raw_size / elemsize;
8470 case DT_MIPS_HIPAGENO:
8471 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
8474 case DT_MIPS_RLD_MAP:
8475 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
8478 case DT_MIPS_OPTIONS:
8479 s = (bfd_get_section_by_name
8480 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
8481 dyn.d_un.d_ptr = s->vma;
8485 s = (bfd_get_section_by_name
8486 (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
8487 dyn.d_un.d_ptr = s->vma;
8496 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
8501 /* The first entry of the global offset table will be filled at
8502 runtime. The second entry will be used by some runtime loaders.
8503 This isn't the case of Irix rld. */
8504 if (sgot != NULL && sgot->_raw_size > 0)
8506 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
8507 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
8508 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
8512 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
8513 = MIPS_ELF_GOT_SIZE (output_bfd);
8518 Elf32_compact_rel cpt;
8520 /* ??? The section symbols for the output sections were set up in
8521 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
8522 symbols. Should we do so? */
8524 smsym = bfd_get_section_by_name (dynobj,
8525 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
8528 Elf32_Internal_Msym msym;
8530 msym.ms_hash_value = 0;
8531 msym.ms_info = ELF32_MS_INFO (0, 1);
8533 for (s = output_bfd->sections; s != NULL; s = s->next)
8535 long dynindx = elf_section_data (s)->dynindx;
8537 bfd_mips_elf_swap_msym_out
8539 (((Elf32_External_Msym *) smsym->contents)
8544 if (SGI_COMPAT (output_bfd))
8546 /* Write .compact_rel section out. */
8547 s = bfd_get_section_by_name (dynobj, ".compact_rel");
8551 cpt.num = s->reloc_count;
8553 cpt.offset = (s->output_section->filepos
8554 + sizeof (Elf32_External_compact_rel));
8557 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
8558 ((Elf32_External_compact_rel *)
8561 /* Clean up a dummy stub function entry in .text. */
8562 s = bfd_get_section_by_name (dynobj,
8563 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8566 file_ptr dummy_offset;
8568 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
8569 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
8570 memset (s->contents + dummy_offset, 0,
8571 MIPS_FUNCTION_STUB_SIZE);
8576 /* Clean up a first relocation in .rel.dyn. */
8577 s = bfd_get_section_by_name (dynobj,
8578 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
8579 if (s != NULL && s->_raw_size > 0)
8580 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
8586 /* This is almost identical to bfd_generic_get_... except that some
8587 MIPS relocations need to be handled specially. Sigh. */
8590 elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
8591 relocateable, symbols)
8593 struct bfd_link_info *link_info;
8594 struct bfd_link_order *link_order;
8596 boolean relocateable;
8599 /* Get enough memory to hold the stuff */
8600 bfd *input_bfd = link_order->u.indirect.section->owner;
8601 asection *input_section = link_order->u.indirect.section;
8603 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
8604 arelent **reloc_vector = NULL;
8610 reloc_vector = (arelent **) bfd_malloc (reloc_size);
8611 if (reloc_vector == NULL && reloc_size != 0)
8614 /* read in the section */
8615 if (!bfd_get_section_contents (input_bfd,
8619 input_section->_raw_size))
8622 /* We're not relaxing the section, so just copy the size info */
8623 input_section->_cooked_size = input_section->_raw_size;
8624 input_section->reloc_done = true;
8626 reloc_count = bfd_canonicalize_reloc (input_bfd,
8630 if (reloc_count < 0)
8633 if (reloc_count > 0)
8638 bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
8641 struct bfd_hash_entry *h;
8642 struct bfd_link_hash_entry *lh;
8643 /* Skip all this stuff if we aren't mixing formats. */
8644 if (abfd && input_bfd
8645 && abfd->xvec == input_bfd->xvec)
8649 h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
8650 lh = (struct bfd_link_hash_entry *) h;
8657 case bfd_link_hash_undefined:
8658 case bfd_link_hash_undefweak:
8659 case bfd_link_hash_common:
8662 case bfd_link_hash_defined:
8663 case bfd_link_hash_defweak:
8665 gp = lh->u.def.value;
8667 case bfd_link_hash_indirect:
8668 case bfd_link_hash_warning:
8670 /* @@FIXME ignoring warning for now */
8672 case bfd_link_hash_new:
8681 for (parent = reloc_vector; *parent != (arelent *) NULL;
8684 char *error_message = (char *) NULL;
8685 bfd_reloc_status_type r;
8687 /* Specific to MIPS: Deal with relocation types that require
8688 knowing the gp of the output bfd. */
8689 asymbol *sym = *(*parent)->sym_ptr_ptr;
8690 if (bfd_is_abs_section (sym->section) && abfd)
8692 /* The special_function wouldn't get called anyways. */
8696 /* The gp isn't there; let the special function code
8697 fall over on its own. */
8699 else if ((*parent)->howto->special_function
8700 == _bfd_mips_elf_gprel16_reloc)
8702 /* bypass special_function call */
8703 r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
8704 relocateable, (PTR) data, gp);
8705 goto skip_bfd_perform_relocation;
8707 /* end mips specific stuff */
8709 r = bfd_perform_relocation (input_bfd,
8713 relocateable ? abfd : (bfd *) NULL,
8715 skip_bfd_perform_relocation:
8719 asection *os = input_section->output_section;
8721 /* A partial link, so keep the relocs */
8722 os->orelocation[os->reloc_count] = *parent;
8726 if (r != bfd_reloc_ok)
8730 case bfd_reloc_undefined:
8731 if (!((*link_info->callbacks->undefined_symbol)
8732 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
8733 input_bfd, input_section, (*parent)->address)))
8736 case bfd_reloc_dangerous:
8737 BFD_ASSERT (error_message != (char *) NULL);
8738 if (!((*link_info->callbacks->reloc_dangerous)
8739 (link_info, error_message, input_bfd, input_section,
8740 (*parent)->address)))
8743 case bfd_reloc_overflow:
8744 if (!((*link_info->callbacks->reloc_overflow)
8745 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
8746 (*parent)->howto->name, (*parent)->addend,
8747 input_bfd, input_section, (*parent)->address)))
8750 case bfd_reloc_outofrange:
8759 if (reloc_vector != NULL)
8760 free (reloc_vector);
8764 if (reloc_vector != NULL)
8765 free (reloc_vector);
8768 #define bfd_elf32_bfd_get_relocated_section_contents \
8769 elf32_mips_get_relocated_section_contents
8771 /* ECOFF swapping routines. These are used when dealing with the
8772 .mdebug section, which is in the ECOFF debugging format. */
8773 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap =
8775 /* Symbol table magic number. */
8777 /* Alignment of debugging information. E.g., 4. */
8779 /* Sizes of external symbolic information. */
8780 sizeof (struct hdr_ext),
8781 sizeof (struct dnr_ext),
8782 sizeof (struct pdr_ext),
8783 sizeof (struct sym_ext),
8784 sizeof (struct opt_ext),
8785 sizeof (struct fdr_ext),
8786 sizeof (struct rfd_ext),
8787 sizeof (struct ext_ext),
8788 /* Functions to swap in external symbolic data. */
8797 _bfd_ecoff_swap_tir_in,
8798 _bfd_ecoff_swap_rndx_in,
8799 /* Functions to swap out external symbolic data. */
8808 _bfd_ecoff_swap_tir_out,
8809 _bfd_ecoff_swap_rndx_out,
8810 /* Function to read in symbolic data. */
8811 _bfd_mips_elf_read_ecoff_info
8814 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
8815 #define TARGET_LITTLE_NAME "elf32-littlemips"
8816 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
8817 #define TARGET_BIG_NAME "elf32-bigmips"
8818 #define ELF_ARCH bfd_arch_mips
8819 #define ELF_MACHINE_CODE EM_MIPS
8821 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
8822 a value of 0x1000, and we are compatible. */
8823 #define ELF_MAXPAGESIZE 0x1000
8825 #define elf_backend_collect true
8826 #define elf_backend_type_change_ok true
8827 #define elf_backend_can_gc_sections true
8828 #define elf_info_to_howto mips_info_to_howto_rela
8829 #define elf_info_to_howto_rel mips_info_to_howto_rel
8830 #define elf_backend_sym_is_global mips_elf_sym_is_global
8831 #define elf_backend_object_p _bfd_mips_elf_object_p
8832 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
8833 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
8834 #define elf_backend_section_from_bfd_section \
8835 _bfd_mips_elf_section_from_bfd_section
8836 #define elf_backend_section_processing _bfd_mips_elf_section_processing
8837 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
8838 #define elf_backend_additional_program_headers \
8839 _bfd_mips_elf_additional_program_headers
8840 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
8841 #define elf_backend_final_write_processing \
8842 _bfd_mips_elf_final_write_processing
8843 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
8844 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
8845 #define elf_backend_create_dynamic_sections \
8846 _bfd_mips_elf_create_dynamic_sections
8847 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
8848 #define elf_backend_adjust_dynamic_symbol \
8849 _bfd_mips_elf_adjust_dynamic_symbol
8850 #define elf_backend_always_size_sections \
8851 _bfd_mips_elf_always_size_sections
8852 #define elf_backend_size_dynamic_sections \
8853 _bfd_mips_elf_size_dynamic_sections
8854 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
8855 #define elf_backend_link_output_symbol_hook \
8856 _bfd_mips_elf_link_output_symbol_hook
8857 #define elf_backend_finish_dynamic_symbol \
8858 _bfd_mips_elf_finish_dynamic_symbol
8859 #define elf_backend_finish_dynamic_sections \
8860 _bfd_mips_elf_finish_dynamic_sections
8861 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
8862 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
8864 #define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO)
8865 #define elf_backend_plt_header_size 0
8867 #define bfd_elf32_bfd_is_local_label_name \
8868 mips_elf_is_local_label_name
8869 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
8870 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
8871 #define bfd_elf32_bfd_link_hash_table_create \
8872 _bfd_mips_elf_link_hash_table_create
8873 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
8874 #define bfd_elf32_bfd_copy_private_bfd_data \
8875 _bfd_mips_elf_copy_private_bfd_data
8876 #define bfd_elf32_bfd_merge_private_bfd_data \
8877 _bfd_mips_elf_merge_private_bfd_data
8878 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
8879 #define bfd_elf32_bfd_print_private_bfd_data \
8880 _bfd_mips_elf_print_private_bfd_data
8881 #include "elf32-target.h"