1 /* MIPS-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 Most of the information added by Ian Lance Taylor, Cygnus Support,
7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
8 <mark@codesourcery.com>
9 Traditional MIPS targets support added by Koundinya.K, Dansk Data
10 Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
12 This file is part of BFD, the Binary File Descriptor library.
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
29 different MIPS ELF from other targets. This matters when linking.
30 This file supports both, switching at runtime. */
40 /* Get the ECOFF swapping routines. */
42 #include "coff/symconst.h"
43 #include "coff/internal.h"
44 #include "coff/ecoff.h"
45 #include "coff/mips.h"
46 #define ECOFF_SIGNED_32
47 #include "ecoffswap.h"
49 /* This structure is used to hold .got information when linking. It
50 is stored in the tdata field of the bfd_elf_section_data structure. */
54 /* The global symbol in the GOT with the lowest index in the dynamic
56 struct elf_link_hash_entry *global_gotsym;
57 /* The number of global .got entries. */
58 unsigned int global_gotno;
59 /* The number of local .got entries. */
60 unsigned int local_gotno;
61 /* The number of local .got entries we have used. */
62 unsigned int assigned_gotno;
65 /* The MIPS ELF linker needs additional information for each symbol in
66 the global hash table. */
68 struct mips_elf_link_hash_entry
70 struct elf_link_hash_entry root;
72 /* External symbol information. */
75 /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
77 unsigned int possibly_dynamic_relocs;
79 /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against
80 a readonly section. */
81 boolean readonly_reloc;
83 /* The index of the first dynamic relocation (in the .rel.dyn
84 section) against this symbol. */
85 unsigned int min_dyn_reloc_index;
87 /* We must not create a stub for a symbol that has relocations
88 related to taking the function's address, i.e. any but
89 R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition",
93 /* If there is a stub that 32 bit functions should use to call this
94 16 bit function, this points to the section containing the stub. */
97 /* Whether we need the fn_stub; this is set if this symbol appears
98 in any relocs other than a 16 bit call. */
101 /* If there is a stub that 16 bit functions should use to call this
102 32 bit function, this points to the section containing the stub. */
105 /* This is like the call_stub field, but it is used if the function
106 being called returns a floating point value. */
107 asection *call_fp_stub;
110 static bfd_reloc_status_type mips32_64bit_reloc
111 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
112 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
113 PARAMS ((bfd *, bfd_reloc_code_real_type));
114 static reloc_howto_type *mips_rtype_to_howto
115 PARAMS ((unsigned int));
116 static void mips_info_to_howto_rel
117 PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
118 static void mips_info_to_howto_rela
119 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
120 static void bfd_mips_elf32_swap_gptab_in
121 PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
122 static void bfd_mips_elf32_swap_gptab_out
123 PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
125 static void bfd_mips_elf_swap_msym_in
126 PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
128 static void bfd_mips_elf_swap_msym_out
129 PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
130 static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
131 static boolean mips_elf_create_procedure_table
132 PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
133 struct ecoff_debug_info *));
134 static INLINE int elf_mips_isa PARAMS ((flagword));
135 static INLINE unsigned long elf_mips_mach PARAMS ((flagword));
136 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
137 static boolean mips_elf_is_local_label_name
138 PARAMS ((bfd *, const char *));
139 static struct bfd_hash_entry *mips_elf_link_hash_newfunc
140 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
141 static int gptab_compare PARAMS ((const void *, const void *));
142 static bfd_reloc_status_type mips16_jump_reloc
143 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
144 static bfd_reloc_status_type mips16_gprel_reloc
145 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
146 static boolean mips_elf_create_compact_rel_section
147 PARAMS ((bfd *, struct bfd_link_info *));
148 static boolean mips_elf_create_got_section
149 PARAMS ((bfd *, struct bfd_link_info *));
150 static bfd_reloc_status_type mips_elf_final_gp
151 PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
152 static bfd_byte *elf32_mips_get_relocated_section_contents
153 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
154 bfd_byte *, boolean, asymbol **));
155 static asection *mips_elf_create_msym_section
157 static void mips_elf_irix6_finish_dynamic_symbol
158 PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
159 static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
160 static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
161 static bfd_vma mips_elf_high PARAMS ((bfd_vma));
162 static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
163 static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
164 static bfd_vma mips_elf_global_got_index
165 PARAMS ((bfd *, struct elf_link_hash_entry *));
166 static bfd_vma mips_elf_local_got_index
167 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
168 static bfd_vma mips_elf_got_offset_from_index
169 PARAMS ((bfd *, bfd *, bfd_vma));
170 static boolean mips_elf_record_global_got_symbol
171 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
172 struct mips_got_info *));
173 static bfd_vma mips_elf_got_page
174 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
175 static const Elf_Internal_Rela *mips_elf_next_relocation
176 PARAMS ((unsigned int, const Elf_Internal_Rela *,
177 const Elf_Internal_Rela *));
178 static bfd_reloc_status_type mips_elf_calculate_relocation
179 PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
180 const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
181 Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
183 static bfd_vma mips_elf_obtain_contents
184 PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
185 static boolean mips_elf_perform_relocation
186 PARAMS ((struct bfd_link_info *, reloc_howto_type *,
187 const Elf_Internal_Rela *, bfd_vma,
188 bfd *, asection *, bfd_byte *, boolean));
189 static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
190 static boolean mips_elf_sort_hash_table_f
191 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
192 static boolean mips_elf_sort_hash_table
193 PARAMS ((struct bfd_link_info *, unsigned long));
194 static asection * mips_elf_got_section PARAMS ((bfd *));
195 static struct mips_got_info *mips_elf_got_info
196 PARAMS ((bfd *, asection **));
197 static boolean mips_elf_local_relocation_p
198 PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean));
199 static bfd_vma mips_elf_create_local_got_entry
200 PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
201 static bfd_vma mips_elf_got16_entry
202 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean));
203 static boolean mips_elf_create_dynamic_relocation
204 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
205 struct mips_elf_link_hash_entry *, asection *,
206 bfd_vma, bfd_vma *, asection *));
207 static void mips_elf_allocate_dynamic_relocations
208 PARAMS ((bfd *, unsigned int));
209 static boolean mips_elf_stub_section_p
210 PARAMS ((bfd *, asection *));
211 static int sort_dynamic_relocs
212 PARAMS ((const void *, const void *));
213 static void _bfd_mips_elf_hide_symbol
214 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
215 static void _bfd_mips_elf_copy_indirect_symbol
216 PARAMS ((struct elf_link_hash_entry *,
217 struct elf_link_hash_entry *));
218 static boolean _bfd_elf32_mips_grok_prstatus
219 PARAMS ((bfd *, Elf_Internal_Note *));
220 static boolean _bfd_elf32_mips_grok_psinfo
221 PARAMS ((bfd *, Elf_Internal_Note *));
222 static boolean _bfd_elf32_mips_discard_info
223 PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *));
224 static boolean _bfd_elf32_mips_ignore_discarded_relocs
225 PARAMS ((asection *));
226 static boolean _bfd_elf32_mips_write_section
227 PARAMS ((bfd *, asection *, bfd_byte *));
229 extern const bfd_target bfd_elf32_tradbigmips_vec;
230 extern const bfd_target bfd_elf32_tradlittlemips_vec;
232 extern const bfd_target bfd_elf64_tradbigmips_vec;
233 extern const bfd_target bfd_elf64_tradlittlemips_vec;
236 /* The level of IRIX compatibility we're striving for. */
244 /* This will be used when we sort the dynamic relocation records. */
245 static bfd *reldyn_sorting_bfd;
247 /* Nonzero if ABFD is using the N32 ABI. */
249 #define ABI_N32_P(abfd) \
250 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
252 /* Nonzero if ABFD is using the 64-bit ABI. */
253 #define ABI_64_P(abfd) \
254 ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0)
256 /* Depending on the target vector we generate some version of Irix
257 executables or "normal" MIPS ELF ABI executables. */
259 #define IRIX_COMPAT(abfd) \
260 (((abfd->xvec == &bfd_elf64_tradbigmips_vec) || \
261 (abfd->xvec == &bfd_elf64_tradlittlemips_vec) || \
262 (abfd->xvec == &bfd_elf32_tradbigmips_vec) || \
263 (abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \
264 ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5))
266 #define IRIX_COMPAT(abfd) \
267 (((abfd->xvec == &bfd_elf32_tradbigmips_vec) || \
268 (abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \
269 ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5))
272 #define NEWABI_P(abfd) (ABI_N32_P(abfd) || ABI_64_P(abfd))
274 /* Whether we are trying to be compatible with IRIX at all. */
275 #define SGI_COMPAT(abfd) \
276 (IRIX_COMPAT (abfd) != ict_none)
278 /* The name of the msym section. */
279 #define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym"
281 /* The name of the srdata section. */
282 #define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata"
284 /* The name of the options section. */
285 #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
286 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options")
288 /* The name of the stub section. */
289 #define MIPS_ELF_STUB_SECTION_NAME(abfd) \
290 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub")
292 /* The name of the dynamic relocation section. */
293 #define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn"
295 /* The size of an external REL relocation. */
296 #define MIPS_ELF_REL_SIZE(abfd) \
297 (get_elf_backend_data (abfd)->s->sizeof_rel)
299 /* The size of an external dynamic table entry. */
300 #define MIPS_ELF_DYN_SIZE(abfd) \
301 (get_elf_backend_data (abfd)->s->sizeof_dyn)
303 /* The size of a GOT entry. */
304 #define MIPS_ELF_GOT_SIZE(abfd) \
305 (get_elf_backend_data (abfd)->s->arch_size / 8)
307 /* The size of a symbol-table entry. */
308 #define MIPS_ELF_SYM_SIZE(abfd) \
309 (get_elf_backend_data (abfd)->s->sizeof_sym)
311 /* The default alignment for sections, as a power of two. */
312 #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
313 (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
315 /* Get word-sized data. */
316 #define MIPS_ELF_GET_WORD(abfd, ptr) \
317 (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
319 /* Put out word-sized data. */
320 #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
322 ? bfd_put_64 (abfd, val, ptr) \
323 : bfd_put_32 (abfd, val, ptr))
325 /* Add a dynamic symbol table-entry. */
327 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
328 (ABI_64_P (elf_hash_table (info)->dynobj) \
329 ? bfd_elf64_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val) \
330 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
332 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
333 (ABI_64_P (elf_hash_table (info)->dynobj) \
334 ? (boolean) (abort (), false) \
335 : bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
338 /* The number of local .got entries we reserve. */
339 #define MIPS_RESERVED_GOTNO (2)
341 /* Instructions which appear in a stub. For some reason the stub is
342 slightly different on an SGI system. */
343 #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
344 #define STUB_LW(abfd) \
347 ? 0xdf998010 /* ld t9,0x8010(gp) */ \
348 : 0x8f998010) /* lw t9,0x8010(gp) */ \
349 : 0x8f998010) /* lw t9,0x8000(gp) */
350 #define STUB_MOVE(abfd) \
351 (SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */
352 #define STUB_JALR 0x0320f809 /* jal t9 */
353 #define STUB_LI16(abfd) \
354 (SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */
355 #define MIPS_FUNCTION_STUB_SIZE (16)
358 /* We no longer try to identify particular sections for the .dynsym
359 section. When we do, we wind up crashing if there are other random
360 sections with relocations. */
362 /* Names of sections which appear in the .dynsym section in an Irix 5
365 static const char * const mips_elf_dynsym_sec_names[] =
378 #define SIZEOF_MIPS_DYNSYM_SECNAMES \
379 (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0])
381 /* The number of entries in mips_elf_dynsym_sec_names which go in the
384 #define MIPS_TEXT_DYNSYM_SECNO (3)
388 /* The names of the runtime procedure table symbols used on Irix 5. */
390 static const char * const mips_elf_dynsym_rtproc_names[] =
393 "_procedure_string_table",
394 "_procedure_table_size",
398 /* These structures are used to generate the .compact_rel section on
403 unsigned long id1; /* Always one? */
404 unsigned long num; /* Number of compact relocation entries. */
405 unsigned long id2; /* Always two? */
406 unsigned long offset; /* The file offset of the first relocation. */
407 unsigned long reserved0; /* Zero? */
408 unsigned long reserved1; /* Zero? */
417 bfd_byte reserved0[4];
418 bfd_byte reserved1[4];
419 } Elf32_External_compact_rel;
423 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
424 unsigned int rtype : 4; /* Relocation types. See below. */
425 unsigned int dist2to : 8;
426 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
427 unsigned long konst; /* KONST field. See below. */
428 unsigned long vaddr; /* VADDR to be relocated. */
433 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
434 unsigned int rtype : 4; /* Relocation types. See below. */
435 unsigned int dist2to : 8;
436 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
437 unsigned long konst; /* KONST field. See below. */
445 } Elf32_External_crinfo;
451 } Elf32_External_crinfo2;
453 /* These are the constants used to swap the bitfields in a crinfo. */
455 #define CRINFO_CTYPE (0x1)
456 #define CRINFO_CTYPE_SH (31)
457 #define CRINFO_RTYPE (0xf)
458 #define CRINFO_RTYPE_SH (27)
459 #define CRINFO_DIST2TO (0xff)
460 #define CRINFO_DIST2TO_SH (19)
461 #define CRINFO_RELVADDR (0x7ffff)
462 #define CRINFO_RELVADDR_SH (0)
464 /* A compact relocation info has long (3 words) or short (2 words)
465 formats. A short format doesn't have VADDR field and relvaddr
466 fields contains ((VADDR - vaddr of the previous entry) >> 2). */
467 #define CRF_MIPS_LONG 1
468 #define CRF_MIPS_SHORT 0
470 /* There are 4 types of compact relocation at least. The value KONST
471 has different meaning for each type:
474 CT_MIPS_REL32 Address in data
475 CT_MIPS_WORD Address in word (XXX)
476 CT_MIPS_GPHI_LO GP - vaddr
477 CT_MIPS_JMPAD Address to jump
480 #define CRT_MIPS_REL32 0xa
481 #define CRT_MIPS_WORD 0xb
482 #define CRT_MIPS_GPHI_LO 0xc
483 #define CRT_MIPS_JMPAD 0xd
485 #define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
486 #define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
487 #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
488 #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
490 static void bfd_elf32_swap_compact_rel_out
491 PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
492 static void bfd_elf32_swap_crinfo_out
493 PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
495 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
496 from smaller values. Start with zero, widen, *then* decrement. */
497 #define MINUS_ONE (((bfd_vma)0) - 1)
499 /* The relocation table used for SHT_REL sections. */
501 static reloc_howto_type elf_mips_howto_table_rel[] =
504 HOWTO (R_MIPS_NONE, /* type */
506 0, /* size (0 = byte, 1 = short, 2 = long) */
508 false, /* pc_relative */
510 complain_overflow_dont, /* complain_on_overflow */
511 bfd_elf_generic_reloc, /* special_function */
512 "R_MIPS_NONE", /* name */
513 false, /* partial_inplace */
516 false), /* pcrel_offset */
518 /* 16 bit relocation. */
519 HOWTO (R_MIPS_16, /* type */
521 2, /* size (0 = byte, 1 = short, 2 = long) */
523 false, /* pc_relative */
525 complain_overflow_signed, /* complain_on_overflow */
526 bfd_elf_generic_reloc, /* special_function */
527 "R_MIPS_16", /* name */
528 true, /* partial_inplace */
529 0x0000ffff, /* src_mask */
530 0x0000ffff, /* dst_mask */
531 false), /* pcrel_offset */
533 /* 32 bit relocation. */
534 HOWTO (R_MIPS_32, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 false, /* pc_relative */
540 complain_overflow_dont, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_MIPS_32", /* name */
543 true, /* partial_inplace */
544 0xffffffff, /* src_mask */
545 0xffffffff, /* dst_mask */
546 false), /* pcrel_offset */
548 /* 32 bit symbol relative relocation. */
549 HOWTO (R_MIPS_REL32, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 false, /* pc_relative */
555 complain_overflow_dont, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_MIPS_REL32", /* name */
558 true, /* partial_inplace */
559 0xffffffff, /* src_mask */
560 0xffffffff, /* dst_mask */
561 false), /* pcrel_offset */
563 /* 26 bit jump address. */
564 HOWTO (R_MIPS_26, /* type */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
568 false, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 /* This needs complex overflow
572 detection, because the upper four
573 bits must match the PC + 4. */
574 bfd_elf_generic_reloc, /* special_function */
575 "R_MIPS_26", /* name */
576 true, /* partial_inplace */
577 0x03ffffff, /* src_mask */
578 0x03ffffff, /* dst_mask */
579 false), /* pcrel_offset */
581 /* High 16 bits of symbol value. */
582 HOWTO (R_MIPS_HI16, /* type */
584 2, /* size (0 = byte, 1 = short, 2 = long) */
586 false, /* pc_relative */
588 complain_overflow_dont, /* complain_on_overflow */
589 _bfd_mips_elf_hi16_reloc, /* special_function */
590 "R_MIPS_HI16", /* name */
591 true, /* partial_inplace */
592 0x0000ffff, /* src_mask */
593 0x0000ffff, /* dst_mask */
594 false), /* pcrel_offset */
596 /* Low 16 bits of symbol value. */
597 HOWTO (R_MIPS_LO16, /* type */
599 2, /* size (0 = byte, 1 = short, 2 = long) */
601 false, /* pc_relative */
603 complain_overflow_dont, /* complain_on_overflow */
604 _bfd_mips_elf_lo16_reloc, /* special_function */
605 "R_MIPS_LO16", /* name */
606 true, /* partial_inplace */
607 0x0000ffff, /* src_mask */
608 0x0000ffff, /* dst_mask */
609 false), /* pcrel_offset */
611 /* GP relative reference. */
612 HOWTO (R_MIPS_GPREL16, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 false, /* pc_relative */
618 complain_overflow_signed, /* complain_on_overflow */
619 _bfd_mips_elf_gprel16_reloc, /* special_function */
620 "R_MIPS_GPREL16", /* name */
621 true, /* partial_inplace */
622 0x0000ffff, /* src_mask */
623 0x0000ffff, /* dst_mask */
624 false), /* pcrel_offset */
626 /* Reference to literal section. */
627 HOWTO (R_MIPS_LITERAL, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 false, /* pc_relative */
633 complain_overflow_signed, /* complain_on_overflow */
634 _bfd_mips_elf_gprel16_reloc, /* special_function */
635 "R_MIPS_LITERAL", /* name */
636 true, /* partial_inplace */
637 0x0000ffff, /* src_mask */
638 0x0000ffff, /* dst_mask */
639 false), /* pcrel_offset */
641 /* Reference to global offset table. */
642 HOWTO (R_MIPS_GOT16, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 false, /* pc_relative */
648 complain_overflow_signed, /* complain_on_overflow */
649 _bfd_mips_elf_got16_reloc, /* special_function */
650 "R_MIPS_GOT16", /* name */
651 true, /* partial_inplace */
652 0x0000ffff, /* src_mask */
653 0x0000ffff, /* dst_mask */
654 false), /* pcrel_offset */
656 /* 16 bit PC relative reference. */
657 HOWTO (R_MIPS_PC16, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 true, /* pc_relative */
663 complain_overflow_signed, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_MIPS_PC16", /* name */
666 true, /* partial_inplace */
667 0x0000ffff, /* src_mask */
668 0x0000ffff, /* dst_mask */
669 true), /* pcrel_offset */
671 /* 16 bit call through global offset table. */
672 HOWTO (R_MIPS_CALL16, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 false, /* pc_relative */
678 complain_overflow_signed, /* complain_on_overflow */
679 bfd_elf_generic_reloc, /* special_function */
680 "R_MIPS_CALL16", /* name */
681 true, /* partial_inplace */
682 0x0000ffff, /* src_mask */
683 0x0000ffff, /* dst_mask */
684 false), /* pcrel_offset */
686 /* 32 bit GP relative reference. */
687 HOWTO (R_MIPS_GPREL32, /* type */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
691 false, /* pc_relative */
693 complain_overflow_dont, /* complain_on_overflow */
694 _bfd_mips_elf_gprel32_reloc, /* special_function */
695 "R_MIPS_GPREL32", /* name */
696 true, /* partial_inplace */
697 0xffffffff, /* src_mask */
698 0xffffffff, /* dst_mask */
699 false), /* pcrel_offset */
701 /* The remaining relocs are defined on Irix 5, although they are
702 not defined by the ABI. */
707 /* A 5 bit shift field. */
708 HOWTO (R_MIPS_SHIFT5, /* type */
710 2, /* size (0 = byte, 1 = short, 2 = long) */
712 false, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 bfd_elf_generic_reloc, /* special_function */
716 "R_MIPS_SHIFT5", /* name */
717 true, /* partial_inplace */
718 0x000007c0, /* src_mask */
719 0x000007c0, /* dst_mask */
720 false), /* pcrel_offset */
722 /* A 6 bit shift field. */
723 /* FIXME: This is not handled correctly; a special function is
724 needed to put the most significant bit in the right place. */
725 HOWTO (R_MIPS_SHIFT6, /* type */
727 2, /* size (0 = byte, 1 = short, 2 = long) */
729 false, /* pc_relative */
731 complain_overflow_bitfield, /* complain_on_overflow */
732 bfd_elf_generic_reloc, /* special_function */
733 "R_MIPS_SHIFT6", /* name */
734 true, /* partial_inplace */
735 0x000007c4, /* src_mask */
736 0x000007c4, /* dst_mask */
737 false), /* pcrel_offset */
739 /* A 64 bit relocation. */
740 HOWTO (R_MIPS_64, /* type */
742 4, /* size (0 = byte, 1 = short, 2 = long) */
744 false, /* pc_relative */
746 complain_overflow_dont, /* complain_on_overflow */
747 mips32_64bit_reloc, /* special_function */
748 "R_MIPS_64", /* name */
749 true, /* partial_inplace */
750 MINUS_ONE, /* src_mask */
751 MINUS_ONE, /* dst_mask */
752 false), /* pcrel_offset */
754 /* Displacement in the global offset table. */
755 HOWTO (R_MIPS_GOT_DISP, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 false, /* pc_relative */
761 complain_overflow_signed, /* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_MIPS_GOT_DISP", /* name */
764 true, /* partial_inplace */
765 0x0000ffff, /* src_mask */
766 0x0000ffff, /* dst_mask */
767 false), /* pcrel_offset */
769 /* Displacement to page pointer in the global offset table. */
770 HOWTO (R_MIPS_GOT_PAGE, /* type */
772 2, /* size (0 = byte, 1 = short, 2 = long) */
774 false, /* pc_relative */
776 complain_overflow_signed, /* complain_on_overflow */
777 bfd_elf_generic_reloc, /* special_function */
778 "R_MIPS_GOT_PAGE", /* name */
779 true, /* partial_inplace */
780 0x0000ffff, /* src_mask */
781 0x0000ffff, /* dst_mask */
782 false), /* pcrel_offset */
784 /* Offset from page pointer in the global offset table. */
785 HOWTO (R_MIPS_GOT_OFST, /* type */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 false, /* pc_relative */
791 complain_overflow_signed, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_MIPS_GOT_OFST", /* name */
794 true, /* partial_inplace */
795 0x0000ffff, /* src_mask */
796 0x0000ffff, /* dst_mask */
797 false), /* pcrel_offset */
799 /* High 16 bits of displacement in global offset table. */
800 HOWTO (R_MIPS_GOT_HI16, /* type */
802 2, /* size (0 = byte, 1 = short, 2 = long) */
804 false, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_MIPS_GOT_HI16", /* name */
809 true, /* partial_inplace */
810 0x0000ffff, /* src_mask */
811 0x0000ffff, /* dst_mask */
812 false), /* pcrel_offset */
814 /* Low 16 bits of displacement in global offset table. */
815 HOWTO (R_MIPS_GOT_LO16, /* type */
817 2, /* size (0 = byte, 1 = short, 2 = long) */
819 false, /* pc_relative */
821 complain_overflow_dont, /* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_MIPS_GOT_LO16", /* name */
824 true, /* partial_inplace */
825 0x0000ffff, /* src_mask */
826 0x0000ffff, /* dst_mask */
827 false), /* pcrel_offset */
829 /* 64 bit subtraction. Used in the N32 ABI. */
830 HOWTO (R_MIPS_SUB, /* type */
832 4, /* size (0 = byte, 1 = short, 2 = long) */
834 false, /* pc_relative */
836 complain_overflow_dont, /* complain_on_overflow */
837 bfd_elf_generic_reloc, /* special_function */
838 "R_MIPS_SUB", /* name */
839 true, /* partial_inplace */
840 MINUS_ONE, /* src_mask */
841 MINUS_ONE, /* dst_mask */
842 false), /* pcrel_offset */
844 /* Used to cause the linker to insert and delete instructions? */
845 EMPTY_HOWTO (R_MIPS_INSERT_A),
846 EMPTY_HOWTO (R_MIPS_INSERT_B),
847 EMPTY_HOWTO (R_MIPS_DELETE),
849 /* Get the higher value of a 64 bit addend. */
850 HOWTO (R_MIPS_HIGHER, /* type */
852 2, /* size (0 = byte, 1 = short, 2 = long) */
854 false, /* pc_relative */
856 complain_overflow_dont, /* complain_on_overflow */
857 bfd_elf_generic_reloc, /* special_function */
858 "R_MIPS_HIGHER", /* name */
859 true, /* partial_inplace */
860 0x0000ffff, /* src_mask */
861 0x0000ffff, /* dst_mask */
862 false), /* pcrel_offset */
864 /* Get the highest value of a 64 bit addend. */
865 HOWTO (R_MIPS_HIGHEST, /* type */
867 2, /* size (0 = byte, 1 = short, 2 = long) */
869 false, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 bfd_elf_generic_reloc, /* special_function */
873 "R_MIPS_HIGHEST", /* name */
874 true, /* partial_inplace */
875 0x0000ffff, /* src_mask */
876 0x0000ffff, /* dst_mask */
877 false), /* pcrel_offset */
879 /* High 16 bits of displacement in global offset table. */
880 HOWTO (R_MIPS_CALL_HI16, /* type */
882 2, /* size (0 = byte, 1 = short, 2 = long) */
884 false, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 bfd_elf_generic_reloc, /* special_function */
888 "R_MIPS_CALL_HI16", /* name */
889 true, /* partial_inplace */
890 0x0000ffff, /* src_mask */
891 0x0000ffff, /* dst_mask */
892 false), /* pcrel_offset */
894 /* Low 16 bits of displacement in global offset table. */
895 HOWTO (R_MIPS_CALL_LO16, /* type */
897 2, /* size (0 = byte, 1 = short, 2 = long) */
899 false, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 bfd_elf_generic_reloc, /* special_function */
903 "R_MIPS_CALL_LO16", /* name */
904 true, /* partial_inplace */
905 0x0000ffff, /* src_mask */
906 0x0000ffff, /* dst_mask */
907 false), /* pcrel_offset */
909 /* Section displacement. */
910 HOWTO (R_MIPS_SCN_DISP, /* type */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
914 false, /* pc_relative */
916 complain_overflow_dont, /* complain_on_overflow */
917 bfd_elf_generic_reloc, /* special_function */
918 "R_MIPS_SCN_DISP", /* name */
919 true, /* partial_inplace */
920 0xffffffff, /* src_mask */
921 0xffffffff, /* dst_mask */
922 false), /* pcrel_offset */
924 EMPTY_HOWTO (R_MIPS_REL16),
925 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
926 EMPTY_HOWTO (R_MIPS_PJUMP),
927 EMPTY_HOWTO (R_MIPS_RELGOT),
929 /* Protected jump conversion. This is an optimization hint. No
930 relocation is required for correctness. */
931 HOWTO (R_MIPS_JALR, /* type */
933 2, /* size (0 = byte, 1 = short, 2 = long) */
935 false, /* pc_relative */
937 complain_overflow_dont, /* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_MIPS_JALR", /* name */
940 false, /* partial_inplace */
941 0x00000000, /* src_mask */
942 0x00000000, /* dst_mask */
943 false), /* pcrel_offset */
946 /* The relocation table used for SHT_RELA sections. */
948 static reloc_howto_type elf_mips_howto_table_rela[] =
951 HOWTO (R_MIPS_NONE, /* type */
953 0, /* size (0 = byte, 1 = short, 2 = long) */
955 false, /* pc_relative */
957 complain_overflow_dont, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_MIPS_NONE", /* name */
960 false, /* partial_inplace */
963 false), /* pcrel_offset */
965 /* 16 bit relocation. */
966 HOWTO (R_MIPS_16, /* type */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
970 false, /* pc_relative */
972 complain_overflow_signed, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_MIPS_16", /* name */
975 false, /* partial_inplace */
977 0x0000, /* dst_mask */
978 false), /* pcrel_offset */
980 /* 32 bit relocation. */
981 HOWTO (R_MIPS_32, /* type */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
985 false, /* pc_relative */
987 complain_overflow_dont, /* complain_on_overflow */
988 bfd_elf_generic_reloc, /* special_function */
989 "R_MIPS_32", /* name */
990 false, /* partial_inplace */
992 0xffffffff, /* dst_mask */
993 false), /* pcrel_offset */
995 /* 32 bit symbol relative relocation. */
996 HOWTO (R_MIPS_REL32, /* type */
998 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 false, /* pc_relative */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 bfd_elf_generic_reloc, /* special_function */
1004 "R_MIPS_REL32", /* name */
1005 false, /* partial_inplace */
1007 0xffffffff, /* dst_mask */
1008 false), /* pcrel_offset */
1010 /* 26 bit jump address. */
1011 HOWTO (R_MIPS_26, /* type */
1013 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 false, /* pc_relative */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 /* This needs complex overflow
1019 detection, because the upper 36
1020 bits must match the PC + 4. */
1021 bfd_elf_generic_reloc, /* special_function */
1022 "R_MIPS_26", /* name */
1023 false, /* partial_inplace */
1025 0x03ffffff, /* dst_mask */
1026 false), /* pcrel_offset */
1028 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */
1029 /* High 16 bits of symbol value. */
1030 HOWTO (R_MIPS_HI16, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 false, /* pc_relative */
1036 complain_overflow_dont, /* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_MIPS_HI16", /* name */
1039 false, /* partial_inplace */
1041 0x0000ffff, /* dst_mask */
1042 false), /* pcrel_offset */
1044 /* Low 16 bits of symbol value. */
1045 HOWTO (R_MIPS_LO16, /* type */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 false, /* pc_relative */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_MIPS_LO16", /* name */
1054 false, /* partial_inplace */
1056 0x0000ffff, /* dst_mask */
1057 false), /* pcrel_offset */
1059 /* GP relative reference. */
1060 HOWTO (R_MIPS_GPREL16, /* type */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 false, /* pc_relative */
1066 complain_overflow_signed, /* complain_on_overflow */
1067 _bfd_mips_elf_gprel16_reloc, /* special_function */
1068 "R_MIPS_GPREL16", /* name */
1069 false, /* partial_inplace */
1071 0x0000ffff, /* dst_mask */
1072 false), /* pcrel_offset */
1074 /* Reference to literal section. */
1075 HOWTO (R_MIPS_LITERAL, /* type */
1077 2, /* size (0 = byte, 1 = short, 2 = long) */
1079 false, /* pc_relative */
1081 complain_overflow_signed, /* complain_on_overflow */
1082 _bfd_mips_elf_gprel16_reloc, /* special_function */
1083 "R_MIPS_LITERAL", /* name */
1084 false, /* partial_inplace */
1086 0x0000ffff, /* dst_mask */
1087 false), /* pcrel_offset */
1089 /* Reference to global offset table. */
1090 /* FIXME: This is not handled correctly. */
1091 HOWTO (R_MIPS_GOT16, /* type */
1093 2, /* size (0 = byte, 1 = short, 2 = long) */
1095 false, /* pc_relative */
1097 complain_overflow_signed, /* complain_on_overflow */
1098 bfd_elf_generic_reloc, /* special_function */
1099 "R_MIPS_GOT16", /* name */
1100 false, /* partial_inplace */
1102 0x0000ffff, /* dst_mask */
1103 false), /* pcrel_offset */
1105 /* 16 bit PC relative reference. */
1106 HOWTO (R_MIPS_PC16, /* type */
1108 2, /* size (0 = byte, 1 = short, 2 = long) */
1110 true, /* pc_relative */
1112 complain_overflow_signed, /* complain_on_overflow */
1113 bfd_elf_generic_reloc, /* special_function */
1114 "R_MIPS_PC16", /* name */
1115 false, /* partial_inplace */
1117 0x0000ffff, /* dst_mask */
1118 true), /* pcrel_offset */
1120 /* 16 bit call through global offset table. */
1121 /* FIXME: This is not handled correctly. */
1122 HOWTO (R_MIPS_CALL16, /* type */
1124 2, /* size (0 = byte, 1 = short, 2 = long) */
1126 false, /* pc_relative */
1128 complain_overflow_signed, /* complain_on_overflow */
1129 bfd_elf_generic_reloc, /* special_function */
1130 "R_MIPS_CALL16", /* name */
1131 false, /* partial_inplace */
1133 0x0000ffff, /* dst_mask */
1134 false), /* pcrel_offset */
1136 /* 32 bit GP relative reference. */
1137 HOWTO (R_MIPS_GPREL32, /* type */
1139 2, /* size (0 = byte, 1 = short, 2 = long) */
1141 false, /* pc_relative */
1143 complain_overflow_dont, /* complain_on_overflow */
1144 _bfd_mips_elf_gprel32_reloc, /* special_function */
1145 "R_MIPS_GPREL32", /* name */
1146 false, /* partial_inplace */
1148 0xffffffff, /* dst_mask */
1149 false), /* pcrel_offset */
1155 /* A 5 bit shift field. */
1156 HOWTO (R_MIPS_SHIFT5, /* type */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 false, /* pc_relative */
1162 complain_overflow_bitfield, /* complain_on_overflow */
1163 bfd_elf_generic_reloc, /* special_function */
1164 "R_MIPS_SHIFT5", /* name */
1165 false, /* partial_inplace */
1167 0x000007c0, /* dst_mask */
1168 false), /* pcrel_offset */
1170 /* A 6 bit shift field. */
1171 /* FIXME: Not handled correctly. */
1172 HOWTO (R_MIPS_SHIFT6, /* type */
1174 2, /* size (0 = byte, 1 = short, 2 = long) */
1176 false, /* pc_relative */
1178 complain_overflow_bitfield, /* complain_on_overflow */
1179 bfd_elf_generic_reloc, /* special_function */
1180 "R_MIPS_SHIFT6", /* name */
1181 false, /* partial_inplace */
1183 0x000007c4, /* dst_mask */
1184 false), /* pcrel_offset */
1186 /* 64 bit relocation. */
1187 HOWTO (R_MIPS_64, /* type */
1189 4, /* size (0 = byte, 1 = short, 2 = long) */
1191 false, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 bfd_elf_generic_reloc, /* special_function */
1195 "R_MIPS_64", /* name */
1196 false, /* partial_inplace */
1198 MINUS_ONE, /* dst_mask */
1199 false), /* pcrel_offset */
1201 /* Displacement in the global offset table. */
1202 /* FIXME: Not handled correctly. */
1203 HOWTO (R_MIPS_GOT_DISP, /* type */
1205 2, /* size (0 = byte, 1 = short, 2 = long) */
1207 false, /* pc_relative */
1209 complain_overflow_signed, /* complain_on_overflow */
1210 bfd_elf_generic_reloc, /* special_function */
1211 "R_MIPS_GOT_DISP", /* name */
1212 false, /* partial_inplace */
1214 0x0000ffff, /* dst_mask */
1215 false), /* pcrel_offset */
1217 /* Displacement to page pointer in the global offset table. */
1218 /* FIXME: Not handled correctly. */
1219 HOWTO (R_MIPS_GOT_PAGE, /* type */
1221 2, /* size (0 = byte, 1 = short, 2 = long) */
1223 false, /* pc_relative */
1225 complain_overflow_signed, /* complain_on_overflow */
1226 bfd_elf_generic_reloc, /* special_function */
1227 "R_MIPS_GOT_PAGE", /* name */
1228 false, /* partial_inplace */
1230 0x0000ffff, /* dst_mask */
1231 false), /* pcrel_offset */
1233 /* Offset from page pointer in the global offset table. */
1234 /* FIXME: Not handled correctly. */
1235 HOWTO (R_MIPS_GOT_OFST, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 false, /* pc_relative */
1241 complain_overflow_signed, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_MIPS_GOT_OFST", /* name */
1244 false, /* partial_inplace */
1246 0x0000ffff, /* dst_mask */
1247 false), /* pcrel_offset */
1249 /* High 16 bits of displacement in global offset table. */
1250 /* FIXME: Not handled correctly. */
1251 HOWTO (R_MIPS_GOT_HI16, /* type */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 false, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_MIPS_GOT_HI16", /* name */
1260 false, /* partial_inplace */
1262 0x0000ffff, /* dst_mask */
1263 false), /* pcrel_offset */
1265 /* Low 16 bits of displacement in global offset table. */
1266 /* FIXME: Not handled correctly. */
1267 HOWTO (R_MIPS_GOT_LO16, /* type */
1269 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 false, /* pc_relative */
1273 complain_overflow_dont, /* complain_on_overflow */
1274 bfd_elf_generic_reloc, /* special_function */
1275 "R_MIPS_GOT_LO16", /* name */
1276 false, /* partial_inplace */
1278 0x0000ffff, /* dst_mask */
1279 false), /* pcrel_offset */
1281 /* 64 bit substraction. */
1282 /* FIXME: Not handled correctly. */
1283 HOWTO (R_MIPS_SUB, /* type */
1285 4, /* size (0 = byte, 1 = short, 2 = long) */
1287 false, /* pc_relative */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_MIPS_SUB", /* name */
1292 false, /* partial_inplace */
1294 MINUS_ONE, /* dst_mask */
1295 false), /* pcrel_offset */
1297 /* Insert the addend as an instruction. */
1298 /* FIXME: Not handled correctly. */
1299 HOWTO (R_MIPS_INSERT_A, /* type */
1301 2, /* size (0 = byte, 1 = short, 2 = long) */
1303 false, /* pc_relative */
1305 complain_overflow_dont, /* complain_on_overflow */
1306 bfd_elf_generic_reloc, /* special_function */
1307 "R_MIPS_INSERT_A", /* name */
1308 false, /* partial_inplace */
1310 0xffffffff, /* dst_mask */
1311 false), /* pcrel_offset */
1313 /* Insert the addend as an instruction, and change all relocations
1314 to refer to the old instruction at the address. */
1315 /* FIXME: Not handled correctly. */
1316 HOWTO (R_MIPS_INSERT_B, /* type */
1318 2, /* size (0 = byte, 1 = short, 2 = long) */
1320 false, /* pc_relative */
1322 complain_overflow_dont, /* complain_on_overflow */
1323 bfd_elf_generic_reloc, /* special_function */
1324 "R_MIPS_INSERT_B", /* name */
1325 false, /* partial_inplace */
1327 0xffffffff, /* dst_mask */
1328 false), /* pcrel_offset */
1330 /* Delete a 32 bit instruction. */
1331 /* FIXME: Not handled correctly. */
1332 HOWTO (R_MIPS_DELETE, /* type */
1334 2, /* size (0 = byte, 1 = short, 2 = long) */
1336 false, /* pc_relative */
1338 complain_overflow_dont, /* complain_on_overflow */
1339 bfd_elf_generic_reloc, /* special_function */
1340 "R_MIPS_DELETE", /* name */
1341 false, /* partial_inplace */
1343 0xffffffff, /* dst_mask */
1344 false), /* pcrel_offset */
1346 /* Get the higher value of a 64 bit addend. */
1347 HOWTO (R_MIPS_HIGHER, /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 false, /* pc_relative */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_MIPS_HIGHER", /* name */
1356 false, /* partial_inplace */
1358 0x0000ffff, /* dst_mask */
1359 false), /* pcrel_offset */
1361 /* Get the highest value of a 64 bit addend. */
1362 HOWTO (R_MIPS_HIGHEST, /* type */
1364 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 false, /* pc_relative */
1368 complain_overflow_dont, /* complain_on_overflow */
1369 bfd_elf_generic_reloc, /* special_function */
1370 "R_MIPS_HIGHEST", /* name */
1371 false, /* partial_inplace */
1373 0x0000ffff, /* dst_mask */
1374 false), /* pcrel_offset */
1376 /* High 16 bits of displacement in global offset table. */
1377 /* FIXME: Not handled correctly. */
1378 HOWTO (R_MIPS_CALL_HI16, /* type */
1380 2, /* size (0 = byte, 1 = short, 2 = long) */
1382 false, /* pc_relative */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 bfd_elf_generic_reloc, /* special_function */
1386 "R_MIPS_CALL_HI16", /* name */
1387 false, /* partial_inplace */
1389 0x0000ffff, /* dst_mask */
1390 false), /* pcrel_offset */
1392 /* Low 16 bits of displacement in global offset table. */
1393 /* FIXME: Not handled correctly. */
1394 HOWTO (R_MIPS_CALL_LO16, /* type */
1396 2, /* size (0 = byte, 1 = short, 2 = long) */
1398 false, /* pc_relative */
1400 complain_overflow_dont, /* complain_on_overflow */
1401 bfd_elf_generic_reloc, /* special_function */
1402 "R_MIPS_CALL_LO16", /* name */
1403 false, /* partial_inplace */
1405 0x0000ffff, /* dst_mask */
1406 false), /* pcrel_offset */
1408 /* Section displacement, used by an associated event location section. */
1409 /* FIXME: Not handled correctly. */
1410 HOWTO (R_MIPS_SCN_DISP, /* type */
1412 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 false, /* pc_relative */
1416 complain_overflow_dont, /* complain_on_overflow */
1417 bfd_elf_generic_reloc, /* special_function */
1418 "R_MIPS_SCN_DISP", /* name */
1419 false, /* partial_inplace */
1421 0xffffffff, /* dst_mask */
1422 false), /* pcrel_offset */
1424 HOWTO (R_MIPS_REL16, /* type */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 false, /* pc_relative */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 bfd_elf_generic_reloc, /* special_function */
1432 "R_MIPS_REL16", /* name */
1433 false, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 false), /* pcrel_offset */
1438 /* These two are obsolete. */
1439 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
1440 EMPTY_HOWTO (R_MIPS_PJUMP),
1442 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
1443 It must be used for multigot GOT's (and only there). */
1444 HOWTO (R_MIPS_RELGOT, /* type */
1446 2, /* size (0 = byte, 1 = short, 2 = long) */
1448 false, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 bfd_elf_generic_reloc, /* special_function */
1452 "R_MIPS_RELGOT", /* name */
1453 false, /* partial_inplace */
1455 0xffffffff, /* dst_mask */
1456 false), /* pcrel_offset */
1458 /* Protected jump conversion. This is an optimization hint. No
1459 relocation is required for correctness. */
1460 HOWTO (R_MIPS_JALR, /* type */
1462 2, /* size (0 = byte, 1 = short, 2 = long) */
1464 false, /* pc_relative */
1466 complain_overflow_dont, /* complain_on_overflow */
1467 bfd_elf_generic_reloc, /* special_function */
1468 "R_MIPS_JALR", /* name */
1469 false, /* partial_inplace */
1471 0xffffffff, /* dst_mask */
1472 false), /* pcrel_offset */
1475 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
1476 is a hack to make the linker think that we need 64 bit values. */
1477 static reloc_howto_type elf_mips_ctor64_howto =
1478 HOWTO (R_MIPS_64, /* type */
1480 4, /* size (0 = byte, 1 = short, 2 = long) */
1482 false, /* pc_relative */
1484 complain_overflow_signed, /* complain_on_overflow */
1485 mips32_64bit_reloc, /* special_function */
1486 "R_MIPS_64", /* name */
1487 true, /* partial_inplace */
1488 0xffffffff, /* src_mask */
1489 0xffffffff, /* dst_mask */
1490 false); /* pcrel_offset */
1492 /* The reloc used for the mips16 jump instruction. */
1493 static reloc_howto_type elf_mips16_jump_howto =
1494 HOWTO (R_MIPS16_26, /* type */
1496 2, /* size (0 = byte, 1 = short, 2 = long) */
1498 false, /* pc_relative */
1500 complain_overflow_dont, /* complain_on_overflow */
1501 /* This needs complex overflow
1502 detection, because the upper four
1503 bits must match the PC. */
1504 mips16_jump_reloc, /* special_function */
1505 "R_MIPS16_26", /* name */
1506 true, /* partial_inplace */
1507 0x3ffffff, /* src_mask */
1508 0x3ffffff, /* dst_mask */
1509 false); /* pcrel_offset */
1511 /* The reloc used for the mips16 gprel instruction. */
1512 static reloc_howto_type elf_mips16_gprel_howto =
1513 HOWTO (R_MIPS16_GPREL, /* type */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 false, /* pc_relative */
1519 complain_overflow_signed, /* complain_on_overflow */
1520 mips16_gprel_reloc, /* special_function */
1521 "R_MIPS16_GPREL", /* name */
1522 true, /* partial_inplace */
1523 0x07ff001f, /* src_mask */
1524 0x07ff001f, /* dst_mask */
1525 false); /* pcrel_offset */
1527 /* GNU extensions for embedded-pic. */
1528 /* High 16 bits of symbol value, pc-relative. */
1529 static reloc_howto_type elf_mips_gnu_rel_hi16 =
1530 HOWTO (R_MIPS_GNU_REL_HI16, /* type */
1532 2, /* size (0 = byte, 1 = short, 2 = long) */
1534 true, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 _bfd_mips_elf_hi16_reloc, /* special_function */
1538 "R_MIPS_GNU_REL_HI16", /* name */
1539 true, /* partial_inplace */
1540 0xffff, /* src_mask */
1541 0xffff, /* dst_mask */
1542 true); /* pcrel_offset */
1544 /* Low 16 bits of symbol value, pc-relative. */
1545 static reloc_howto_type elf_mips_gnu_rel_lo16 =
1546 HOWTO (R_MIPS_GNU_REL_LO16, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 true, /* pc_relative */
1552 complain_overflow_dont, /* complain_on_overflow */
1553 _bfd_mips_elf_lo16_reloc, /* special_function */
1554 "R_MIPS_GNU_REL_LO16", /* name */
1555 true, /* partial_inplace */
1556 0xffff, /* src_mask */
1557 0xffff, /* dst_mask */
1558 true); /* pcrel_offset */
1560 /* 16 bit offset for pc-relative branches. */
1561 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1562 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1564 2, /* size (0 = byte, 1 = short, 2 = long) */
1566 true, /* pc_relative */
1568 complain_overflow_signed, /* complain_on_overflow */
1569 bfd_elf_generic_reloc, /* special_function */
1570 "R_MIPS_GNU_REL16_S2", /* name */
1571 true, /* partial_inplace */
1572 0xffff, /* src_mask */
1573 0xffff, /* dst_mask */
1574 true); /* pcrel_offset */
1576 /* 64 bit pc-relative. */
1577 static reloc_howto_type elf_mips_gnu_pcrel64 =
1578 HOWTO (R_MIPS_PC64, /* type */
1580 4, /* size (0 = byte, 1 = short, 2 = long) */
1582 true, /* pc_relative */
1584 complain_overflow_signed, /* complain_on_overflow */
1585 bfd_elf_generic_reloc, /* special_function */
1586 "R_MIPS_PC64", /* name */
1587 true, /* partial_inplace */
1588 MINUS_ONE, /* src_mask */
1589 MINUS_ONE, /* dst_mask */
1590 true); /* pcrel_offset */
1592 /* 32 bit pc-relative. */
1593 static reloc_howto_type elf_mips_gnu_pcrel32 =
1594 HOWTO (R_MIPS_PC32, /* type */
1596 2, /* size (0 = byte, 1 = short, 2 = long) */
1598 true, /* pc_relative */
1600 complain_overflow_signed, /* complain_on_overflow */
1601 bfd_elf_generic_reloc, /* special_function */
1602 "R_MIPS_PC32", /* name */
1603 true, /* partial_inplace */
1604 0xffffffff, /* src_mask */
1605 0xffffffff, /* dst_mask */
1606 true); /* pcrel_offset */
1608 /* GNU extension to record C++ vtable hierarchy */
1609 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1610 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1612 2, /* size (0 = byte, 1 = short, 2 = long) */
1614 false, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 NULL, /* special_function */
1618 "R_MIPS_GNU_VTINHERIT", /* name */
1619 false, /* partial_inplace */
1622 false); /* pcrel_offset */
1624 /* GNU extension to record C++ vtable member usage */
1625 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1626 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1628 2, /* size (0 = byte, 1 = short, 2 = long) */
1630 false, /* pc_relative */
1632 complain_overflow_dont, /* complain_on_overflow */
1633 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1634 "R_MIPS_GNU_VTENTRY", /* name */
1635 false, /* partial_inplace */
1638 false); /* pcrel_offset */
1640 /* Do a R_MIPS_HI16 relocation. This has to be done in combination
1641 with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
1642 the HI16. Here we just save the information we need; we do the
1643 actual relocation when we see the LO16.
1645 MIPS ELF requires that the LO16 immediately follow the HI16. As a
1646 GNU extension, for non-pc-relative relocations, we permit an
1647 arbitrary number of HI16 relocs to be associated with a single LO16
1648 reloc. This extension permits gcc to output the HI and LO relocs
1651 This cannot be done for PC-relative relocations because both the HI16
1652 and LO16 parts of the relocations must be done relative to the LO16
1653 part, and there can be carry to or borrow from the HI16 part. */
1657 struct mips_hi16 *next;
1662 /* FIXME: This should not be a static variable. */
1664 static struct mips_hi16 *mips_hi16_list;
1666 bfd_reloc_status_type
1667 _bfd_mips_elf_hi16_reloc (abfd,
1674 bfd *abfd ATTRIBUTE_UNUSED;
1675 arelent *reloc_entry;
1678 asection *input_section;
1680 char **error_message;
1682 bfd_reloc_status_type ret;
1684 struct mips_hi16 *n;
1686 /* If we're relocating, and this an external symbol, we don't want
1687 to change anything. */
1688 if (output_bfd != (bfd *) NULL
1689 && (symbol->flags & BSF_SECTION_SYM) == 0
1690 && reloc_entry->addend == 0)
1692 reloc_entry->address += input_section->output_offset;
1693 return bfd_reloc_ok;
1698 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1700 boolean relocateable;
1703 if (ret == bfd_reloc_undefined)
1706 if (output_bfd != NULL)
1707 relocateable = true;
1710 relocateable = false;
1711 output_bfd = symbol->section->output_section->owner;
1714 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1715 error_message, &gp);
1716 if (ret != bfd_reloc_ok)
1719 relocation = gp - reloc_entry->address;
1723 if (bfd_is_und_section (symbol->section)
1724 && output_bfd == (bfd *) NULL)
1725 ret = bfd_reloc_undefined;
1727 if (bfd_is_com_section (symbol->section))
1730 relocation = symbol->value;
1733 relocation += symbol->section->output_section->vma;
1734 relocation += symbol->section->output_offset;
1735 relocation += reloc_entry->addend;
1737 if (reloc_entry->address > input_section->_cooked_size)
1738 return bfd_reloc_outofrange;
1740 /* Save the information, and let LO16 do the actual relocation. */
1741 n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n);
1743 return bfd_reloc_outofrange;
1744 n->addr = (bfd_byte *) data + reloc_entry->address;
1745 n->addend = relocation;
1746 n->next = mips_hi16_list;
1749 if (output_bfd != (bfd *) NULL)
1750 reloc_entry->address += input_section->output_offset;
1755 /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
1756 inplace relocation; this function exists in order to do the
1757 R_MIPS_HI16 relocation described above. */
1759 bfd_reloc_status_type
1760 _bfd_mips_elf_lo16_reloc (abfd,
1768 arelent *reloc_entry;
1771 asection *input_section;
1773 char **error_message;
1775 arelent gp_disp_relent;
1777 if (mips_hi16_list != NULL)
1779 struct mips_hi16 *l;
1786 unsigned long vallo;
1787 struct mips_hi16 *next;
1789 /* Do the HI16 relocation. Note that we actually don't need
1790 to know anything about the LO16 itself, except where to
1791 find the low 16 bits of the addend needed by the LO16. */
1792 insn = bfd_get_32 (abfd, l->addr);
1793 vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1795 /* The low order 16 bits are always treated as a signed
1797 vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000;
1798 val = ((insn & 0xffff) << 16) + vallo;
1801 /* If PC-relative, we need to subtract out the address of the LO
1802 half of the HI/LO. (The actual relocation is relative
1803 to that instruction.) */
1804 if (reloc_entry->howto->pc_relative)
1805 val -= reloc_entry->address;
1807 /* At this point, "val" has the value of the combined HI/LO
1808 pair. If the low order 16 bits (which will be used for
1809 the LO16 insn) are negative, then we will need an
1810 adjustment for the high order 16 bits. */
1812 val = (val >> 16) & 0xffff;
1814 insn &= ~ (bfd_vma) 0xffff;
1816 bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
1818 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1820 gp_disp_relent = *reloc_entry;
1821 reloc_entry = &gp_disp_relent;
1822 reloc_entry->addend = l->addend;
1830 mips_hi16_list = NULL;
1832 else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1834 bfd_reloc_status_type ret;
1835 bfd_vma gp, relocation;
1837 /* FIXME: Does this case ever occur? */
1839 ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
1840 if (ret != bfd_reloc_ok)
1843 relocation = gp - reloc_entry->address;
1844 relocation += symbol->section->output_section->vma;
1845 relocation += symbol->section->output_offset;
1846 relocation += reloc_entry->addend;
1848 if (reloc_entry->address > input_section->_cooked_size)
1849 return bfd_reloc_outofrange;
1851 gp_disp_relent = *reloc_entry;
1852 reloc_entry = &gp_disp_relent;
1853 reloc_entry->addend = relocation - 4;
1856 /* Now do the LO16 reloc in the usual way. */
1857 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1858 input_section, output_bfd, error_message);
1861 /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
1862 table used for PIC code. If the symbol is an external symbol, the
1863 instruction is modified to contain the offset of the appropriate
1864 entry in the global offset table. If the symbol is a section
1865 symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
1866 addends are combined to form the real addend against the section
1867 symbol; the GOT16 is modified to contain the offset of an entry in
1868 the global offset table, and the LO16 is modified to offset it
1869 appropriately. Thus an offset larger than 16 bits requires a
1870 modified value in the global offset table.
1872 This implementation suffices for the assembler, but the linker does
1873 not yet know how to create global offset tables. */
1875 bfd_reloc_status_type
1876 _bfd_mips_elf_got16_reloc (abfd,
1884 arelent *reloc_entry;
1887 asection *input_section;
1889 char **error_message;
1891 /* If we're relocating, and this an external symbol, we don't want
1892 to change anything. */
1893 if (output_bfd != (bfd *) NULL
1894 && (symbol->flags & BSF_SECTION_SYM) == 0
1895 && reloc_entry->addend == 0)
1897 reloc_entry->address += input_section->output_offset;
1898 return bfd_reloc_ok;
1901 /* If we're relocating, and this is a local symbol, we can handle it
1903 if (output_bfd != (bfd *) NULL
1904 && (symbol->flags & BSF_SECTION_SYM) != 0)
1905 return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
1906 input_section, output_bfd, error_message);
1911 /* Set the GP value for OUTPUT_BFD. Returns false if this is a
1912 dangerous relocation. */
1915 mips_elf_assign_gp (output_bfd, pgp)
1923 /* If we've already figured out what GP will be, just return it. */
1924 *pgp = _bfd_get_gp_value (output_bfd);
1928 count = bfd_get_symcount (output_bfd);
1929 sym = bfd_get_outsymbols (output_bfd);
1931 /* The linker script will have created a symbol named `_gp' with the
1932 appropriate value. */
1933 if (sym == (asymbol **) NULL)
1937 for (i = 0; i < count; i++, sym++)
1939 register const char *name;
1941 name = bfd_asymbol_name (*sym);
1942 if (*name == '_' && strcmp (name, "_gp") == 0)
1944 *pgp = bfd_asymbol_value (*sym);
1945 _bfd_set_gp_value (output_bfd, *pgp);
1953 /* Only get the error once. */
1955 _bfd_set_gp_value (output_bfd, *pgp);
1962 /* We have to figure out the gp value, so that we can adjust the
1963 symbol value correctly. We look up the symbol _gp in the output
1964 BFD. If we can't find it, we're stuck. We cache it in the ELF
1965 target data. We don't need to adjust the symbol value for an
1966 external symbol if we are producing relocateable output. */
1968 static bfd_reloc_status_type
1969 mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
1972 boolean relocateable;
1973 char **error_message;
1976 if (bfd_is_und_section (symbol->section)
1980 return bfd_reloc_undefined;
1983 *pgp = _bfd_get_gp_value (output_bfd);
1986 || (symbol->flags & BSF_SECTION_SYM) != 0))
1990 /* Make up a value. */
1991 *pgp = symbol->section->output_section->vma + 0x4000;
1992 _bfd_set_gp_value (output_bfd, *pgp);
1994 else if (!mips_elf_assign_gp (output_bfd, pgp))
1997 (char *) _("GP relative relocation when _gp not defined");
1998 return bfd_reloc_dangerous;
2002 return bfd_reloc_ok;
2005 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
2006 become the offset from the gp register. This function also handles
2007 R_MIPS_LITERAL relocations, although those can be handled more
2008 cleverly because the entries in the .lit8 and .lit4 sections can be
2011 static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *,
2012 arelent *, asection *,
2013 boolean, PTR, bfd_vma));
2015 bfd_reloc_status_type
2016 _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
2017 output_bfd, error_message)
2019 arelent *reloc_entry;
2022 asection *input_section;
2024 char **error_message;
2026 boolean relocateable;
2027 bfd_reloc_status_type ret;
2030 /* If we're relocating, and this is an external symbol with no
2031 addend, we don't want to change anything. We will only have an
2032 addend if this is a newly created reloc, not read from an ELF
2034 if (output_bfd != (bfd *) NULL
2035 && (symbol->flags & BSF_SECTION_SYM) == 0
2036 && reloc_entry->addend == 0)
2038 reloc_entry->address += input_section->output_offset;
2039 return bfd_reloc_ok;
2042 if (output_bfd != (bfd *) NULL)
2043 relocateable = true;
2046 relocateable = false;
2047 output_bfd = symbol->section->output_section->owner;
2050 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
2052 if (ret != bfd_reloc_ok)
2055 return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
2056 relocateable, data, gp);
2059 static bfd_reloc_status_type
2060 gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
2064 arelent *reloc_entry;
2065 asection *input_section;
2066 boolean relocateable;
2074 if (bfd_is_com_section (symbol->section))
2077 relocation = symbol->value;
2079 relocation += symbol->section->output_section->vma;
2080 relocation += symbol->section->output_offset;
2082 if (reloc_entry->address > input_section->_cooked_size)
2083 return bfd_reloc_outofrange;
2085 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
2087 /* Set val to the offset into the section or symbol. */
2088 if (reloc_entry->howto->src_mask == 0)
2090 /* This case occurs with the 64-bit MIPS ELF ABI. */
2091 val = reloc_entry->addend;
2095 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
2100 /* Adjust val for the final section location and GP value. If we
2101 are producing relocateable output, we don't want to do this for
2102 an external symbol. */
2104 || (symbol->flags & BSF_SECTION_SYM) != 0)
2105 val += relocation - gp;
2107 insn = (insn & ~0xffff) | (val & 0xffff);
2108 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
2111 reloc_entry->address += input_section->output_offset;
2113 /* Make sure it fit in 16 bits. */
2114 if ((long) val >= 0x8000 || (long) val < -0x8000)
2115 return bfd_reloc_overflow;
2117 return bfd_reloc_ok;
2120 /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
2121 from the gp register? XXX */
2123 static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
2124 arelent *, asection *,
2125 boolean, PTR, bfd_vma));
2127 bfd_reloc_status_type
2128 _bfd_mips_elf_gprel32_reloc (abfd,
2136 arelent *reloc_entry;
2139 asection *input_section;
2141 char **error_message;
2143 boolean relocateable;
2144 bfd_reloc_status_type ret;
2147 /* If we're relocating, and this is an external symbol with no
2148 addend, we don't want to change anything. We will only have an
2149 addend if this is a newly created reloc, not read from an ELF
2151 if (output_bfd != (bfd *) NULL
2152 && (symbol->flags & BSF_SECTION_SYM) == 0
2153 && reloc_entry->addend == 0)
2155 *error_message = (char *)
2156 _("32bits gp relative relocation occurs for an external symbol");
2157 return bfd_reloc_outofrange;
2160 if (output_bfd != (bfd *) NULL)
2162 relocateable = true;
2163 gp = _bfd_get_gp_value (output_bfd);
2167 relocateable = false;
2168 output_bfd = symbol->section->output_section->owner;
2170 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
2171 error_message, &gp);
2172 if (ret != bfd_reloc_ok)
2176 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
2177 relocateable, data, gp);
2180 static bfd_reloc_status_type
2181 gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
2185 arelent *reloc_entry;
2186 asection *input_section;
2187 boolean relocateable;
2194 if (bfd_is_com_section (symbol->section))
2197 relocation = symbol->value;
2199 relocation += symbol->section->output_section->vma;
2200 relocation += symbol->section->output_offset;
2202 if (reloc_entry->address > input_section->_cooked_size)
2203 return bfd_reloc_outofrange;
2205 if (reloc_entry->howto->src_mask == 0)
2207 /* This case arises with the 64-bit MIPS ELF ABI. */
2211 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
2213 /* Set val to the offset into the section or symbol. */
2214 val += reloc_entry->addend;
2216 /* Adjust val for the final section location and GP value. If we
2217 are producing relocateable output, we don't want to do this for
2218 an external symbol. */
2220 || (symbol->flags & BSF_SECTION_SYM) != 0)
2221 val += relocation - gp;
2223 bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address);
2226 reloc_entry->address += input_section->output_offset;
2228 return bfd_reloc_ok;
2231 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
2232 generated when addresses are 64 bits. The upper 32 bits are a simple
2235 static bfd_reloc_status_type
2236 mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
2237 output_bfd, error_message)
2239 arelent *reloc_entry;
2242 asection *input_section;
2244 char **error_message;
2246 bfd_reloc_status_type r;
2251 r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2252 input_section, output_bfd, error_message);
2253 if (r != bfd_reloc_continue)
2256 /* Do a normal 32 bit relocation on the lower 32 bits. */
2257 reloc32 = *reloc_entry;
2258 if (bfd_big_endian (abfd))
2259 reloc32.address += 4;
2260 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
2261 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
2262 output_bfd, error_message);
2264 /* Sign extend into the upper 32 bits. */
2265 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
2266 if ((val & 0x80000000) != 0)
2270 addr = reloc_entry->address;
2271 if (bfd_little_endian (abfd))
2273 bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr);
2278 /* Handle a mips16 jump. */
2280 static bfd_reloc_status_type
2281 mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
2282 output_bfd, error_message)
2283 bfd *abfd ATTRIBUTE_UNUSED;
2284 arelent *reloc_entry;
2286 PTR data ATTRIBUTE_UNUSED;
2287 asection *input_section;
2289 char **error_message ATTRIBUTE_UNUSED;
2291 if (output_bfd != (bfd *) NULL
2292 && (symbol->flags & BSF_SECTION_SYM) == 0
2293 && reloc_entry->addend == 0)
2295 reloc_entry->address += input_section->output_offset;
2296 return bfd_reloc_ok;
2301 static boolean warned;
2304 (*_bfd_error_handler)
2305 (_("Linking mips16 objects into %s format is not supported"),
2306 bfd_get_target (input_section->output_section->owner));
2310 return bfd_reloc_undefined;
2313 /* Handle a mips16 GP relative reloc. */
2315 static bfd_reloc_status_type
2316 mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
2317 output_bfd, error_message)
2319 arelent *reloc_entry;
2322 asection *input_section;
2324 char **error_message;
2326 boolean relocateable;
2327 bfd_reloc_status_type ret;
2329 unsigned short extend, insn;
2330 unsigned long final;
2332 /* If we're relocating, and this is an external symbol with no
2333 addend, we don't want to change anything. We will only have an
2334 addend if this is a newly created reloc, not read from an ELF
2336 if (output_bfd != NULL
2337 && (symbol->flags & BSF_SECTION_SYM) == 0
2338 && reloc_entry->addend == 0)
2340 reloc_entry->address += input_section->output_offset;
2341 return bfd_reloc_ok;
2344 if (output_bfd != NULL)
2345 relocateable = true;
2348 relocateable = false;
2349 output_bfd = symbol->section->output_section->owner;
2352 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
2354 if (ret != bfd_reloc_ok)
2357 if (reloc_entry->address > input_section->_cooked_size)
2358 return bfd_reloc_outofrange;
2360 /* Pick up the mips16 extend instruction and the real instruction. */
2361 extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
2362 insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
2364 /* Stuff the current addend back as a 32 bit value, do the usual
2365 relocation, and then clean up. */
2367 (bfd_vma) (((extend & 0x1f) << 11)
2370 (bfd_byte *) data + reloc_entry->address);
2372 ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
2373 relocateable, data, gp);
2375 final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
2377 (bfd_vma) ((extend & 0xf800)
2378 | ((final >> 11) & 0x1f)
2380 (bfd_byte *) data + reloc_entry->address);
2382 (bfd_vma) ((insn & 0xffe0)
2384 (bfd_byte *) data + reloc_entry->address + 2);
2389 /* Return the ISA for a MIPS e_flags value. */
2392 elf_mips_isa (flags)
2395 switch (flags & EF_MIPS_ARCH)
2407 case E_MIPS_ARCH_32:
2409 case E_MIPS_ARCH_64:
2415 /* Return the MACH for a MIPS e_flags value. */
2417 static INLINE unsigned long
2418 elf_mips_mach (flags)
2421 switch (flags & EF_MIPS_MACH)
2423 case E_MIPS_MACH_3900:
2424 return bfd_mach_mips3900;
2426 case E_MIPS_MACH_4010:
2427 return bfd_mach_mips4010;
2429 case E_MIPS_MACH_4100:
2430 return bfd_mach_mips4100;
2432 case E_MIPS_MACH_4111:
2433 return bfd_mach_mips4111;
2435 case E_MIPS_MACH_4650:
2436 return bfd_mach_mips4650;
2438 case E_MIPS_MACH_SB1:
2439 return bfd_mach_mips_sb1;
2442 switch (flags & EF_MIPS_ARCH)
2446 return bfd_mach_mips3000;
2450 return bfd_mach_mips6000;
2454 return bfd_mach_mips4000;
2458 return bfd_mach_mips8000;
2462 return bfd_mach_mips5;
2465 case E_MIPS_ARCH_32:
2466 return bfd_mach_mipsisa32;
2469 case E_MIPS_ARCH_64:
2470 return bfd_mach_mipsisa64;
2478 /* Return printable name for ABI. */
2480 static INLINE char *
2481 elf_mips_abi_name (abfd)
2486 flags = elf_elfheader (abfd)->e_flags;
2487 switch (flags & EF_MIPS_ABI)
2490 if (ABI_N32_P (abfd))
2492 else if (ABI_64_P (abfd))
2496 case E_MIPS_ABI_O32:
2498 case E_MIPS_ABI_O64:
2500 case E_MIPS_ABI_EABI32:
2502 case E_MIPS_ABI_EABI64:
2505 return "unknown abi";
2509 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
2511 struct elf_reloc_map {
2512 bfd_reloc_code_real_type bfd_reloc_val;
2513 enum elf_mips_reloc_type elf_reloc_val;
2516 static const struct elf_reloc_map mips_reloc_map[] =
2518 { BFD_RELOC_NONE, R_MIPS_NONE, },
2519 { BFD_RELOC_16, R_MIPS_16 },
2520 { BFD_RELOC_32, R_MIPS_32 },
2521 { BFD_RELOC_64, R_MIPS_64 },
2522 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
2523 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
2524 { BFD_RELOC_LO16, R_MIPS_LO16 },
2525 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
2526 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
2527 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
2528 { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
2529 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
2530 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
2531 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
2532 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2533 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2534 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2535 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2536 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2537 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2538 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
2541 /* Given a BFD reloc type, return a howto structure. */
2543 static reloc_howto_type *
2544 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
2546 bfd_reloc_code_real_type code;
2550 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
2552 if (mips_reloc_map[i].bfd_reloc_val == code)
2553 return &elf_mips_howto_table_rel[(int) mips_reloc_map[i].elf_reloc_val];
2559 bfd_set_error (bfd_error_bad_value);
2562 case BFD_RELOC_CTOR:
2563 /* We need to handle BFD_RELOC_CTOR specially.
2564 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
2565 size of addresses on this architecture. */
2566 if (bfd_arch_bits_per_address (abfd) == 32)
2567 return &elf_mips_howto_table_rel[(int) R_MIPS_32];
2569 return &elf_mips_ctor64_howto;
2571 case BFD_RELOC_MIPS16_JMP:
2572 return &elf_mips16_jump_howto;
2573 case BFD_RELOC_MIPS16_GPREL:
2574 return &elf_mips16_gprel_howto;
2575 case BFD_RELOC_VTABLE_INHERIT:
2576 return &elf_mips_gnu_vtinherit_howto;
2577 case BFD_RELOC_VTABLE_ENTRY:
2578 return &elf_mips_gnu_vtentry_howto;
2579 case BFD_RELOC_PCREL_HI16_S:
2580 return &elf_mips_gnu_rel_hi16;
2581 case BFD_RELOC_PCREL_LO16:
2582 return &elf_mips_gnu_rel_lo16;
2583 case BFD_RELOC_16_PCREL_S2:
2584 return &elf_mips_gnu_rel16_s2;
2585 case BFD_RELOC_64_PCREL:
2586 return &elf_mips_gnu_pcrel64;
2587 case BFD_RELOC_32_PCREL:
2588 return &elf_mips_gnu_pcrel32;
2592 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
2594 static reloc_howto_type *
2595 mips_rtype_to_howto (r_type)
2596 unsigned int r_type;
2601 return &elf_mips16_jump_howto;
2603 case R_MIPS16_GPREL:
2604 return &elf_mips16_gprel_howto;
2606 case R_MIPS_GNU_VTINHERIT:
2607 return &elf_mips_gnu_vtinherit_howto;
2609 case R_MIPS_GNU_VTENTRY:
2610 return &elf_mips_gnu_vtentry_howto;
2612 case R_MIPS_GNU_REL_HI16:
2613 return &elf_mips_gnu_rel_hi16;
2615 case R_MIPS_GNU_REL_LO16:
2616 return &elf_mips_gnu_rel_lo16;
2618 case R_MIPS_GNU_REL16_S2:
2619 return &elf_mips_gnu_rel16_s2;
2622 return &elf_mips_gnu_pcrel64;
2625 return &elf_mips_gnu_pcrel32;
2629 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2630 return &elf_mips_howto_table_rel[r_type];
2635 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
2638 mips_info_to_howto_rel (abfd, cache_ptr, dst)
2641 Elf32_Internal_Rel *dst;
2643 unsigned int r_type;
2645 r_type = ELF32_R_TYPE (dst->r_info);
2646 cache_ptr->howto = mips_rtype_to_howto (r_type);
2648 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
2649 value for the object file. We get the addend now, rather than
2650 when we do the relocation, because the symbol manipulations done
2651 by the linker may cause us to lose track of the input BFD. */
2652 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
2653 && (r_type == (unsigned int) R_MIPS_GPREL16
2654 || r_type == (unsigned int) R_MIPS_LITERAL))
2655 cache_ptr->addend = elf_gp (abfd);
2658 /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */
2661 mips_info_to_howto_rela (abfd, cache_ptr, dst)
2664 Elf32_Internal_Rela *dst;
2666 /* Since an Elf32_Internal_Rel is an initial prefix of an
2667 Elf32_Internal_Rela, we can just use mips_info_to_howto_rel
2669 mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst);
2671 /* If we ever need to do any extra processing with dst->r_addend
2672 (the field omitted in an Elf32_Internal_Rel) we can do it here. */
2675 /* A .reginfo section holds a single Elf32_RegInfo structure. These
2676 routines swap this structure in and out. They are used outside of
2677 BFD, so they are globally visible. */
2680 bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
2682 const Elf32_External_RegInfo *ex;
2685 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
2686 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
2687 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
2688 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
2689 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
2690 in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value);
2694 bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
2696 const Elf32_RegInfo *in;
2697 Elf32_External_RegInfo *ex;
2699 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
2700 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
2701 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
2702 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
2703 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
2704 H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value);
2707 /* In the 64 bit ABI, the .MIPS.options section holds register
2708 information in an Elf64_Reginfo structure. These routines swap
2709 them in and out. They are globally visible because they are used
2710 outside of BFD. These routines are here so that gas can call them
2711 without worrying about whether the 64 bit ABI has been included. */
2714 bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
2716 const Elf64_External_RegInfo *ex;
2717 Elf64_Internal_RegInfo *in;
2719 in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
2720 in->ri_pad = H_GET_32 (abfd, ex->ri_pad);
2721 in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
2722 in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
2723 in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
2724 in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
2725 in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value);
2729 bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
2731 const Elf64_Internal_RegInfo *in;
2732 Elf64_External_RegInfo *ex;
2734 H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
2735 H_PUT_32 (abfd, in->ri_pad, ex->ri_pad);
2736 H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
2737 H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
2738 H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
2739 H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
2740 H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value);
2743 /* Swap an entry in a .gptab section. Note that these routines rely
2744 on the equivalence of the two elements of the union. */
2747 bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
2749 const Elf32_External_gptab *ex;
2752 in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value);
2753 in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes);
2757 bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
2759 const Elf32_gptab *in;
2760 Elf32_External_gptab *ex;
2762 H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value);
2763 H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes);
2767 bfd_elf32_swap_compact_rel_out (abfd, in, ex)
2769 const Elf32_compact_rel *in;
2770 Elf32_External_compact_rel *ex;
2772 H_PUT_32 (abfd, in->id1, ex->id1);
2773 H_PUT_32 (abfd, in->num, ex->num);
2774 H_PUT_32 (abfd, in->id2, ex->id2);
2775 H_PUT_32 (abfd, in->offset, ex->offset);
2776 H_PUT_32 (abfd, in->reserved0, ex->reserved0);
2777 H_PUT_32 (abfd, in->reserved1, ex->reserved1);
2781 bfd_elf32_swap_crinfo_out (abfd, in, ex)
2783 const Elf32_crinfo *in;
2784 Elf32_External_crinfo *ex;
2788 l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
2789 | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
2790 | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
2791 | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
2792 H_PUT_32 (abfd, l, ex->info);
2793 H_PUT_32 (abfd, in->konst, ex->konst);
2794 H_PUT_32 (abfd, in->vaddr, ex->vaddr);
2797 /* Swap in an options header. */
2800 bfd_mips_elf_swap_options_in (abfd, ex, in)
2802 const Elf_External_Options *ex;
2803 Elf_Internal_Options *in;
2805 in->kind = H_GET_8 (abfd, ex->kind);
2806 in->size = H_GET_8 (abfd, ex->size);
2807 in->section = H_GET_16 (abfd, ex->section);
2808 in->info = H_GET_32 (abfd, ex->info);
2811 /* Swap out an options header. */
2814 bfd_mips_elf_swap_options_out (abfd, in, ex)
2816 const Elf_Internal_Options *in;
2817 Elf_External_Options *ex;
2819 H_PUT_8 (abfd, in->kind, ex->kind);
2820 H_PUT_8 (abfd, in->size, ex->size);
2821 H_PUT_16 (abfd, in->section, ex->section);
2822 H_PUT_32 (abfd, in->info, ex->info);
2825 /* Swap in an MSYM entry. */
2828 bfd_mips_elf_swap_msym_in (abfd, ex, in)
2830 const Elf32_External_Msym *ex;
2831 Elf32_Internal_Msym *in;
2833 in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value);
2834 in->ms_info = H_GET_32 (abfd, ex->ms_info);
2837 /* Swap out an MSYM entry. */
2840 bfd_mips_elf_swap_msym_out (abfd, in, ex)
2842 const Elf32_Internal_Msym *in;
2843 Elf32_External_Msym *ex;
2845 H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
2846 H_PUT_32 (abfd, in->ms_info, ex->ms_info);
2849 /* Determine whether a symbol is global for the purposes of splitting
2850 the symbol table into global symbols and local symbols. At least
2851 on Irix 5, this split must be between section symbols and all other
2852 symbols. On most ELF targets the split is between static symbols
2853 and externally visible symbols. */
2856 mips_elf_sym_is_global (abfd, sym)
2857 bfd *abfd ATTRIBUTE_UNUSED;
2860 if (SGI_COMPAT (abfd))
2861 return (sym->flags & BSF_SECTION_SYM) == 0;
2863 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2864 || bfd_is_und_section (bfd_get_section (sym))
2865 || bfd_is_com_section (bfd_get_section (sym)));
2868 /* Set the right machine number for a MIPS ELF file. This is used for
2869 both the 32-bit and the 64-bit ABI. */
2872 _bfd_mips_elf_object_p (abfd)
2875 /* Irix 5 and 6 are broken. Object file symbol tables are not always
2876 sorted correctly such that local symbols precede global symbols,
2877 and the sh_info field in the symbol table is not always right. */
2878 if (SGI_COMPAT(abfd))
2879 elf_bad_symtab (abfd) = true;
2881 bfd_default_set_arch_mach (abfd, bfd_arch_mips,
2882 elf_mips_mach (elf_elfheader (abfd)->e_flags));
2886 /* The final processing done just before writing out a MIPS ELF object
2887 file. This gets the MIPS architecture right based on the machine
2888 number. This is used by both the 32-bit and the 64-bit ABI. */
2891 _bfd_mips_elf_final_write_processing (abfd, linker)
2893 boolean linker ATTRIBUTE_UNUSED;
2897 Elf_Internal_Shdr **hdrpp;
2901 switch (bfd_get_mach (abfd))
2904 case bfd_mach_mips3000:
2905 val = E_MIPS_ARCH_1;
2908 case bfd_mach_mips3900:
2909 val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
2912 case bfd_mach_mips6000:
2913 val = E_MIPS_ARCH_2;
2916 case bfd_mach_mips4000:
2917 case bfd_mach_mips4300:
2918 case bfd_mach_mips4400:
2919 case bfd_mach_mips4600:
2920 val = E_MIPS_ARCH_3;
2923 case bfd_mach_mips4010:
2924 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
2927 case bfd_mach_mips4100:
2928 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
2931 case bfd_mach_mips4111:
2932 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
2935 case bfd_mach_mips4650:
2936 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
2939 case bfd_mach_mips5000:
2940 case bfd_mach_mips8000:
2941 case bfd_mach_mips10000:
2942 case bfd_mach_mips12000:
2943 val = E_MIPS_ARCH_4;
2946 case bfd_mach_mips5:
2947 val = E_MIPS_ARCH_5;
2950 case bfd_mach_mips_sb1:
2951 val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1;
2954 case bfd_mach_mipsisa32:
2955 val = E_MIPS_ARCH_32;
2958 case bfd_mach_mipsisa64:
2959 val = E_MIPS_ARCH_64;
2962 elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
2963 elf_elfheader (abfd)->e_flags |= val;
2965 /* Set the sh_info field for .gptab sections and other appropriate
2966 info for each special section. */
2967 for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
2968 i < elf_numsections (abfd);
2971 switch ((*hdrpp)->sh_type)
2974 case SHT_MIPS_LIBLIST:
2975 sec = bfd_get_section_by_name (abfd, ".dynstr");
2977 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2980 case SHT_MIPS_GPTAB:
2981 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2982 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2983 BFD_ASSERT (name != NULL
2984 && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
2985 sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
2986 BFD_ASSERT (sec != NULL);
2987 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
2990 case SHT_MIPS_CONTENT:
2991 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2992 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2993 BFD_ASSERT (name != NULL
2994 && strncmp (name, ".MIPS.content",
2995 sizeof ".MIPS.content" - 1) == 0);
2996 sec = bfd_get_section_by_name (abfd,
2997 name + sizeof ".MIPS.content" - 1);
2998 BFD_ASSERT (sec != NULL);
2999 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
3002 case SHT_MIPS_SYMBOL_LIB:
3003 sec = bfd_get_section_by_name (abfd, ".dynsym");
3005 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
3006 sec = bfd_get_section_by_name (abfd, ".liblist");
3008 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
3011 case SHT_MIPS_EVENTS:
3012 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
3013 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
3014 BFD_ASSERT (name != NULL);
3015 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
3016 sec = bfd_get_section_by_name (abfd,
3017 name + sizeof ".MIPS.events" - 1);
3020 BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
3021 sizeof ".MIPS.post_rel" - 1) == 0);
3022 sec = bfd_get_section_by_name (abfd,
3024 + sizeof ".MIPS.post_rel" - 1));
3026 BFD_ASSERT (sec != NULL);
3027 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
3034 /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
3037 _bfd_mips_elf_set_private_flags (abfd, flags)
3041 BFD_ASSERT (!elf_flags_init (abfd)
3042 || elf_elfheader (abfd)->e_flags == flags);
3044 elf_elfheader (abfd)->e_flags = flags;
3045 elf_flags_init (abfd) = true;
3049 /* Merge backend specific data from an object file to the output
3050 object file when linking. */
3053 _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
3060 boolean null_input_bfd = true;
3063 /* Check if we have the same endianess */
3064 if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
3067 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3068 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3071 new_flags = elf_elfheader (ibfd)->e_flags;
3072 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
3073 old_flags = elf_elfheader (obfd)->e_flags;
3075 if (! elf_flags_init (obfd))
3077 elf_flags_init (obfd) = true;
3078 elf_elfheader (obfd)->e_flags = new_flags;
3079 elf_elfheader (obfd)->e_ident[EI_CLASS]
3080 = elf_elfheader (ibfd)->e_ident[EI_CLASS];
3082 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3083 && bfd_get_arch_info (obfd)->the_default)
3085 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3086 bfd_get_mach (ibfd)))
3093 /* Check flag compatibility. */
3095 new_flags &= ~EF_MIPS_NOREORDER;
3096 old_flags &= ~EF_MIPS_NOREORDER;
3098 if (new_flags == old_flags)
3101 /* Check to see if the input BFD actually contains any sections.
3102 If not, its flags may not have been initialised either, but it cannot
3103 actually cause any incompatibility. */
3104 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3106 /* Ignore synthetic sections and empty .text, .data and .bss sections
3107 which are automatically generated by gas. */
3108 if (strcmp (sec->name, ".reginfo")
3109 && strcmp (sec->name, ".mdebug")
3110 && ((!strcmp (sec->name, ".text")
3111 || !strcmp (sec->name, ".data")
3112 || !strcmp (sec->name, ".bss"))
3113 && sec->_raw_size != 0))
3115 null_input_bfd = false;
3124 if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
3126 new_flags &= ~EF_MIPS_PIC;
3127 old_flags &= ~EF_MIPS_PIC;
3128 (*_bfd_error_handler)
3129 (_("%s: linking PIC files with non-PIC files"),
3130 bfd_archive_filename (ibfd));
3134 if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
3136 new_flags &= ~EF_MIPS_CPIC;
3137 old_flags &= ~EF_MIPS_CPIC;
3138 (*_bfd_error_handler)
3139 (_("%s: linking abicalls files with non-abicalls files"),
3140 bfd_archive_filename (ibfd));
3144 /* Compare the ISA's. */
3145 if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
3146 != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
3148 int new_mach = new_flags & EF_MIPS_MACH;
3149 int old_mach = old_flags & EF_MIPS_MACH;
3150 int new_isa = elf_mips_isa (new_flags);
3151 int old_isa = elf_mips_isa (old_flags);
3153 /* If either has no machine specified, just compare the general isa's.
3154 Some combinations of machines are ok, if the isa's match. */
3157 || new_mach == old_mach
3160 /* Don't warn about mixing code using 32-bit ISAs, or mixing code
3161 using 64-bit ISAs. They will normally use the same data sizes
3162 and calling conventions. */
3164 if (( (new_isa == 1 || new_isa == 2 || new_isa == 32)
3165 ^ (old_isa == 1 || old_isa == 2 || old_isa == 32)) != 0)
3167 (*_bfd_error_handler)
3168 (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
3169 bfd_archive_filename (ibfd), new_isa, old_isa);
3176 (*_bfd_error_handler)
3177 (_("%s: ISA mismatch (%d) with previous modules (%d)"),
3178 bfd_archive_filename (ibfd),
3179 elf_mips_mach (new_flags),
3180 elf_mips_mach (old_flags));
3184 new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
3185 old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
3188 /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
3189 does set EI_CLASS differently from any 32-bit ABI. */
3190 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
3191 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
3192 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
3194 /* Only error if both are set (to different values). */
3195 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
3196 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
3197 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
3199 (*_bfd_error_handler)
3200 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
3201 bfd_archive_filename (ibfd),
3202 elf_mips_abi_name (ibfd),
3203 elf_mips_abi_name (obfd));
3206 new_flags &= ~EF_MIPS_ABI;
3207 old_flags &= ~EF_MIPS_ABI;
3210 /* Warn about any other mismatches */
3211 if (new_flags != old_flags)
3213 (*_bfd_error_handler)
3214 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3215 bfd_archive_filename (ibfd), (unsigned long) new_flags,
3216 (unsigned long) old_flags);
3222 bfd_set_error (bfd_error_bad_value);
3230 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
3234 FILE *file = (FILE *) ptr;
3236 BFD_ASSERT (abfd != NULL && ptr != NULL);
3238 /* Print normal ELF private data. */
3239 _bfd_elf_print_private_bfd_data (abfd, ptr);
3241 /* xgettext:c-format */
3242 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3244 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
3245 fprintf (file, _(" [abi=O32]"));
3246 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
3247 fprintf (file, _(" [abi=O64]"));
3248 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
3249 fprintf (file, _(" [abi=EABI32]"));
3250 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
3251 fprintf (file, _(" [abi=EABI64]"));
3252 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
3253 fprintf (file, _(" [abi unknown]"));
3254 else if (ABI_N32_P (abfd))
3255 fprintf (file, _(" [abi=N32]"));
3256 else if (ABI_64_P (abfd))
3257 fprintf (file, _(" [abi=64]"));
3259 fprintf (file, _(" [no abi set]"));
3261 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
3262 fprintf (file, _(" [mips1]"));
3263 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
3264 fprintf (file, _(" [mips2]"));
3265 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
3266 fprintf (file, _(" [mips3]"));
3267 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
3268 fprintf (file, _(" [mips4]"));
3269 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
3270 fprintf (file, _ (" [mips5]"));
3271 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
3272 fprintf (file, _ (" [mips32]"));
3273 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
3274 fprintf (file, _ (" [mips64]"));
3276 fprintf (file, _(" [unknown ISA]"));
3278 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
3279 fprintf (file, _(" [32bitmode]"));
3281 fprintf (file, _(" [not 32bitmode]"));
3288 /* Handle a MIPS specific section when reading an object file. This
3289 is called when elfcode.h finds a section with an unknown type.
3290 This routine supports both the 32-bit and 64-bit ELF ABI.
3292 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
3296 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
3298 Elf_Internal_Shdr *hdr;
3303 /* There ought to be a place to keep ELF backend specific flags, but
3304 at the moment there isn't one. We just keep track of the
3305 sections by their name, instead. Fortunately, the ABI gives
3306 suggested names for all the MIPS specific sections, so we will
3307 probably get away with this. */
3308 switch (hdr->sh_type)
3310 case SHT_MIPS_LIBLIST:
3311 if (strcmp (name, ".liblist") != 0)
3315 if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
3318 case SHT_MIPS_CONFLICT:
3319 if (strcmp (name, ".conflict") != 0)
3322 case SHT_MIPS_GPTAB:
3323 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
3326 case SHT_MIPS_UCODE:
3327 if (strcmp (name, ".ucode") != 0)
3330 case SHT_MIPS_DEBUG:
3331 if (strcmp (name, ".mdebug") != 0)
3333 flags = SEC_DEBUGGING;
3335 case SHT_MIPS_REGINFO:
3336 if (strcmp (name, ".reginfo") != 0
3337 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
3339 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
3341 case SHT_MIPS_IFACE:
3342 if (strcmp (name, ".MIPS.interfaces") != 0)
3345 case SHT_MIPS_CONTENT:
3346 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
3349 case SHT_MIPS_OPTIONS:
3350 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
3353 case SHT_MIPS_DWARF:
3354 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
3357 case SHT_MIPS_SYMBOL_LIB:
3358 if (strcmp (name, ".MIPS.symlib") != 0)
3361 case SHT_MIPS_EVENTS:
3362 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
3363 && strncmp (name, ".MIPS.post_rel",
3364 sizeof ".MIPS.post_rel" - 1) != 0)
3371 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
3376 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
3377 (bfd_get_section_flags (abfd,
3383 /* FIXME: We should record sh_info for a .gptab section. */
3385 /* For a .reginfo section, set the gp value in the tdata information
3386 from the contents of this section. We need the gp value while
3387 processing relocs, so we just get it now. The .reginfo section
3388 is not used in the 64-bit MIPS ELF ABI. */
3389 if (hdr->sh_type == SHT_MIPS_REGINFO)
3391 Elf32_External_RegInfo ext;
3394 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
3396 (bfd_size_type) sizeof ext))
3398 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
3399 elf_gp (abfd) = s.ri_gp_value;
3402 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
3403 set the gp value based on what we find. We may see both
3404 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
3405 they should agree. */
3406 if (hdr->sh_type == SHT_MIPS_OPTIONS)
3408 bfd_byte *contents, *l, *lend;
3410 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
3411 if (contents == NULL)
3413 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
3414 (file_ptr) 0, hdr->sh_size))
3420 lend = contents + hdr->sh_size;
3421 while (l + sizeof (Elf_External_Options) <= lend)
3423 Elf_Internal_Options intopt;
3425 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3427 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3429 Elf64_Internal_RegInfo intreg;
3431 bfd_mips_elf64_swap_reginfo_in
3433 ((Elf64_External_RegInfo *)
3434 (l + sizeof (Elf_External_Options))),
3436 elf_gp (abfd) = intreg.ri_gp_value;
3438 else if (intopt.kind == ODK_REGINFO)
3440 Elf32_RegInfo intreg;
3442 bfd_mips_elf32_swap_reginfo_in
3444 ((Elf32_External_RegInfo *)
3445 (l + sizeof (Elf_External_Options))),
3447 elf_gp (abfd) = intreg.ri_gp_value;
3457 /* Set the correct type for a MIPS ELF section. We do this by the
3458 section name, which is a hack, but ought to work. This routine is
3459 used by both the 32-bit and the 64-bit ABI. */
3462 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
3464 Elf32_Internal_Shdr *hdr;
3467 register const char *name;
3469 name = bfd_get_section_name (abfd, sec);
3471 if (strcmp (name, ".liblist") == 0)
3473 hdr->sh_type = SHT_MIPS_LIBLIST;
3474 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
3475 /* The sh_link field is set in final_write_processing. */
3477 else if (strcmp (name, ".conflict") == 0)
3478 hdr->sh_type = SHT_MIPS_CONFLICT;
3479 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
3481 hdr->sh_type = SHT_MIPS_GPTAB;
3482 hdr->sh_entsize = sizeof (Elf32_External_gptab);
3483 /* The sh_info field is set in final_write_processing. */
3485 else if (strcmp (name, ".ucode") == 0)
3486 hdr->sh_type = SHT_MIPS_UCODE;
3487 else if (strcmp (name, ".mdebug") == 0)
3489 hdr->sh_type = SHT_MIPS_DEBUG;
3490 /* In a shared object on Irix 5.3, the .mdebug section has an
3491 entsize of 0. FIXME: Does this matter? */
3492 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
3493 hdr->sh_entsize = 0;
3495 hdr->sh_entsize = 1;
3497 else if (strcmp (name, ".reginfo") == 0)
3499 hdr->sh_type = SHT_MIPS_REGINFO;
3500 /* In a shared object on Irix 5.3, the .reginfo section has an
3501 entsize of 0x18. FIXME: Does this matter? */
3502 if (SGI_COMPAT (abfd))
3504 if ((abfd->flags & DYNAMIC) != 0)
3505 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3507 hdr->sh_entsize = 1;
3510 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3512 else if (SGI_COMPAT (abfd)
3513 && (strcmp (name, ".hash") == 0
3514 || strcmp (name, ".dynamic") == 0
3515 || strcmp (name, ".dynstr") == 0))
3517 if (SGI_COMPAT (abfd))
3518 hdr->sh_entsize = 0;
3520 /* This isn't how the Irix 6 linker behaves. */
3521 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
3524 else if (strcmp (name, ".got") == 0
3525 || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
3526 || strcmp (name, ".sdata") == 0
3527 || strcmp (name, ".sbss") == 0
3528 || strcmp (name, ".lit4") == 0
3529 || strcmp (name, ".lit8") == 0)
3530 hdr->sh_flags |= SHF_MIPS_GPREL;
3531 else if (strcmp (name, ".MIPS.interfaces") == 0)
3533 hdr->sh_type = SHT_MIPS_IFACE;
3534 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3536 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
3538 hdr->sh_type = SHT_MIPS_CONTENT;
3539 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3540 /* The sh_info field is set in final_write_processing. */
3542 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3544 hdr->sh_type = SHT_MIPS_OPTIONS;
3545 hdr->sh_entsize = 1;
3546 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3548 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
3549 hdr->sh_type = SHT_MIPS_DWARF;
3550 else if (strcmp (name, ".MIPS.symlib") == 0)
3552 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
3553 /* The sh_link and sh_info fields are set in
3554 final_write_processing. */
3556 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
3557 || strncmp (name, ".MIPS.post_rel",
3558 sizeof ".MIPS.post_rel" - 1) == 0)
3560 hdr->sh_type = SHT_MIPS_EVENTS;
3561 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3562 /* The sh_link field is set in final_write_processing. */
3564 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
3566 hdr->sh_type = SHT_MIPS_MSYM;
3567 hdr->sh_flags |= SHF_ALLOC;
3568 hdr->sh_entsize = 8;
3571 /* The generic elf_fake_sections will set up REL_HDR using the
3572 default kind of relocations. But, we may actually need both
3573 kinds of relocations, so we set up the second header here. */
3574 if ((sec->flags & SEC_RELOC) != 0)
3576 struct bfd_elf_section_data *esd;
3577 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
3579 esd = elf_section_data (sec);
3580 BFD_ASSERT (esd->rel_hdr2 == NULL);
3581 esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
3584 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
3585 !elf_section_data (sec)->use_rela_p);
3591 /* Given a BFD section, try to locate the corresponding ELF section
3592 index. This is used by both the 32-bit and the 64-bit ABI.
3593 Actually, it's not clear to me that the 64-bit ABI supports these,
3594 but for non-PIC objects we will certainly want support for at least
3595 the .scommon section. */
3598 _bfd_mips_elf_section_from_bfd_section (abfd, sec, retval)
3599 bfd *abfd ATTRIBUTE_UNUSED;
3603 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3605 *retval = SHN_MIPS_SCOMMON;
3608 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
3610 *retval = SHN_MIPS_ACOMMON;
3616 /* When are writing out the .options or .MIPS.options section,
3617 remember the bytes we are writing out, so that we can install the
3618 GP value in the section_processing routine. */
3621 _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
3626 bfd_size_type count;
3628 if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3632 if (elf_section_data (section) == NULL)
3634 bfd_size_type amt = sizeof (struct bfd_elf_section_data);
3635 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3636 if (elf_section_data (section) == NULL)
3639 c = (bfd_byte *) elf_section_data (section)->tdata;
3644 if (section->_cooked_size != 0)
3645 size = section->_cooked_size;
3647 size = section->_raw_size;
3648 c = (bfd_byte *) bfd_zalloc (abfd, size);
3651 elf_section_data (section)->tdata = (PTR) c;
3654 memcpy (c + offset, location, (size_t) count);
3657 return _bfd_elf_set_section_contents (abfd, section, location, offset,
3661 /* Work over a section just before writing it out. This routine is
3662 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
3663 sections that need the SHF_MIPS_GPREL flag by name; there has to be
3667 _bfd_mips_elf_section_processing (abfd, hdr)
3669 Elf_Internal_Shdr *hdr;
3671 if (hdr->sh_type == SHT_MIPS_REGINFO
3672 && hdr->sh_size > 0)
3676 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
3677 BFD_ASSERT (hdr->contents == NULL);
3680 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
3683 H_PUT_32 (abfd, elf_gp (abfd), buf);
3684 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3688 if (hdr->sh_type == SHT_MIPS_OPTIONS
3689 && hdr->bfd_section != NULL
3690 && elf_section_data (hdr->bfd_section) != NULL
3691 && elf_section_data (hdr->bfd_section)->tdata != NULL)
3693 bfd_byte *contents, *l, *lend;
3695 /* We stored the section contents in the elf_section_data tdata
3696 field in the set_section_contents routine. We save the
3697 section contents so that we don't have to read them again.
3698 At this point we know that elf_gp is set, so we can look
3699 through the section contents to see if there is an
3700 ODK_REGINFO structure. */
3702 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
3704 lend = contents + hdr->sh_size;
3705 while (l + sizeof (Elf_External_Options) <= lend)
3707 Elf_Internal_Options intopt;
3709 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3711 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3718 + sizeof (Elf_External_Options)
3719 + (sizeof (Elf64_External_RegInfo) - 8)),
3722 H_PUT_64 (abfd, elf_gp (abfd), buf);
3723 if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8)
3726 else if (intopt.kind == ODK_REGINFO)
3733 + sizeof (Elf_External_Options)
3734 + (sizeof (Elf32_External_RegInfo) - 4)),
3737 H_PUT_32 (abfd, elf_gp (abfd), buf);
3738 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3745 if (hdr->bfd_section != NULL)
3747 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3749 if (strcmp (name, ".sdata") == 0
3750 || strcmp (name, ".lit8") == 0
3751 || strcmp (name, ".lit4") == 0)
3753 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3754 hdr->sh_type = SHT_PROGBITS;
3756 else if (strcmp (name, ".sbss") == 0)
3758 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3759 hdr->sh_type = SHT_NOBITS;
3761 else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
3763 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3764 hdr->sh_type = SHT_PROGBITS;
3766 else if (strcmp (name, ".compact_rel") == 0)
3769 hdr->sh_type = SHT_PROGBITS;
3771 else if (strcmp (name, ".rtproc") == 0)
3773 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3775 unsigned int adjust;
3777 adjust = hdr->sh_size % hdr->sh_addralign;
3779 hdr->sh_size += hdr->sh_addralign - adjust;
3787 /* MIPS ELF uses two common sections. One is the usual one, and the
3788 other is for small objects. All the small objects are kept
3789 together, and then referenced via the gp pointer, which yields
3790 faster assembler code. This is what we use for the small common
3791 section. This approach is copied from ecoff.c. */
3792 static asection mips_elf_scom_section;
3793 static asymbol mips_elf_scom_symbol;
3794 static asymbol *mips_elf_scom_symbol_ptr;
3796 /* MIPS ELF also uses an acommon section, which represents an
3797 allocated common symbol which may be overridden by a
3798 definition in a shared library. */
3799 static asection mips_elf_acom_section;
3800 static asymbol mips_elf_acom_symbol;
3801 static asymbol *mips_elf_acom_symbol_ptr;
3803 /* Handle the special MIPS section numbers that a symbol may use.
3804 This is used for both the 32-bit and the 64-bit ABI. */
3807 _bfd_mips_elf_symbol_processing (abfd, asym)
3811 elf_symbol_type *elfsym;
3813 elfsym = (elf_symbol_type *) asym;
3814 switch (elfsym->internal_elf_sym.st_shndx)
3816 case SHN_MIPS_ACOMMON:
3817 /* This section is used in a dynamically linked executable file.
3818 It is an allocated common section. The dynamic linker can
3819 either resolve these symbols to something in a shared
3820 library, or it can just leave them here. For our purposes,
3821 we can consider these symbols to be in a new section. */
3822 if (mips_elf_acom_section.name == NULL)
3824 /* Initialize the acommon section. */
3825 mips_elf_acom_section.name = ".acommon";
3826 mips_elf_acom_section.flags = SEC_ALLOC;
3827 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3828 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3829 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3830 mips_elf_acom_symbol.name = ".acommon";
3831 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3832 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3833 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3835 asym->section = &mips_elf_acom_section;
3839 /* Common symbols less than the GP size are automatically
3840 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3841 if (asym->value > elf_gp_size (abfd)
3842 || IRIX_COMPAT (abfd) == ict_irix6)
3845 case SHN_MIPS_SCOMMON:
3846 if (mips_elf_scom_section.name == NULL)
3848 /* Initialize the small common section. */
3849 mips_elf_scom_section.name = ".scommon";
3850 mips_elf_scom_section.flags = SEC_IS_COMMON;
3851 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3852 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3853 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3854 mips_elf_scom_symbol.name = ".scommon";
3855 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3856 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3857 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3859 asym->section = &mips_elf_scom_section;
3860 asym->value = elfsym->internal_elf_sym.st_size;
3863 case SHN_MIPS_SUNDEFINED:
3864 asym->section = bfd_und_section_ptr;
3867 #if 0 /* for SGI_COMPAT */
3869 asym->section = mips_elf_text_section_ptr;
3873 asym->section = mips_elf_data_section_ptr;
3879 /* When creating an Irix 5 executable, we need REGINFO and RTPROC
3883 _bfd_mips_elf_additional_program_headers (abfd)
3889 /* See if we need a PT_MIPS_REGINFO segment. */
3890 s = bfd_get_section_by_name (abfd, ".reginfo");
3891 if (s && (s->flags & SEC_LOAD))
3894 /* See if we need a PT_MIPS_OPTIONS segment. */
3895 if (IRIX_COMPAT (abfd) == ict_irix6
3896 && bfd_get_section_by_name (abfd,
3897 MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
3900 /* See if we need a PT_MIPS_RTPROC segment. */
3901 if (IRIX_COMPAT (abfd) == ict_irix5
3902 && bfd_get_section_by_name (abfd, ".dynamic")
3903 && bfd_get_section_by_name (abfd, ".mdebug"))
3909 /* Modify the segment map for an Irix 5 executable. */
3912 _bfd_mips_elf_modify_segment_map (abfd)
3916 struct elf_segment_map *m, **pm;
3919 /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
3921 s = bfd_get_section_by_name (abfd, ".reginfo");
3922 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3924 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3925 if (m->p_type == PT_MIPS_REGINFO)
3930 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3934 m->p_type = PT_MIPS_REGINFO;
3938 /* We want to put it after the PHDR and INTERP segments. */
3939 pm = &elf_tdata (abfd)->segment_map;
3941 && ((*pm)->p_type == PT_PHDR
3942 || (*pm)->p_type == PT_INTERP))
3950 /* For IRIX 6, we don't have .mdebug sections, nor does anything but
3951 .dynamic end up in PT_DYNAMIC. However, we do have to insert a
3952 PT_OPTIONS segement immediately following the program header
3954 if (IRIX_COMPAT (abfd) == ict_irix6)
3956 for (s = abfd->sections; s; s = s->next)
3957 if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
3962 struct elf_segment_map *options_segment;
3964 /* Usually, there's a program header table. But, sometimes
3965 there's not (like when running the `ld' testsuite). So,
3966 if there's no program header table, we just put the
3967 options segement at the end. */
3968 for (pm = &elf_tdata (abfd)->segment_map;
3971 if ((*pm)->p_type == PT_PHDR)
3974 amt = sizeof (struct elf_segment_map);
3975 options_segment = bfd_zalloc (abfd, amt);
3976 options_segment->next = *pm;
3977 options_segment->p_type = PT_MIPS_OPTIONS;
3978 options_segment->p_flags = PF_R;
3979 options_segment->p_flags_valid = true;
3980 options_segment->count = 1;
3981 options_segment->sections[0] = s;
3982 *pm = options_segment;
3987 if (IRIX_COMPAT (abfd) == ict_irix5)
3989 /* If there are .dynamic and .mdebug sections, we make a room
3990 for the RTPROC header. FIXME: Rewrite without section names. */
3991 if (bfd_get_section_by_name (abfd, ".interp") == NULL
3992 && bfd_get_section_by_name (abfd, ".dynamic") != NULL
3993 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
3995 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3996 if (m->p_type == PT_MIPS_RTPROC)
4001 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4005 m->p_type = PT_MIPS_RTPROC;
4007 s = bfd_get_section_by_name (abfd, ".rtproc");
4012 m->p_flags_valid = 1;
4020 /* We want to put it after the DYNAMIC segment. */
4021 pm = &elf_tdata (abfd)->segment_map;
4022 while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
4032 /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
4033 .dynstr, .dynsym, and .hash sections, and everything in
4035 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
4037 if ((*pm)->p_type == PT_DYNAMIC)
4040 if (m != NULL && IRIX_COMPAT (abfd) == ict_none)
4042 /* For a normal mips executable the permissions for the PT_DYNAMIC
4043 segment are read, write and execute. We do that here since
4044 the code in elf.c sets only the read permission. This matters
4045 sometimes for the dynamic linker. */
4046 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
4048 m->p_flags = PF_R | PF_W | PF_X;
4049 m->p_flags_valid = 1;
4053 && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
4055 static const char *sec_names[] =
4057 ".dynamic", ".dynstr", ".dynsym", ".hash"
4061 struct elf_segment_map *n;
4065 for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
4067 s = bfd_get_section_by_name (abfd, sec_names[i]);
4068 if (s != NULL && (s->flags & SEC_LOAD) != 0)
4074 sz = s->_cooked_size;
4077 if (high < s->vma + sz)
4083 for (s = abfd->sections; s != NULL; s = s->next)
4084 if ((s->flags & SEC_LOAD) != 0
4087 + (s->_cooked_size !=
4088 0 ? s->_cooked_size : s->_raw_size)) <= high))
4091 amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *);
4092 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4099 for (s = abfd->sections; s != NULL; s = s->next)
4101 if ((s->flags & SEC_LOAD) != 0
4104 + (s->_cooked_size != 0 ?
4105 s->_cooked_size : s->_raw_size)) <= high))
4119 /* The structure of the runtime procedure descriptor created by the
4120 loader for use by the static exception system. */
4122 typedef struct runtime_pdr {
4123 bfd_vma adr; /* memory address of start of procedure */
4124 long regmask; /* save register mask */
4125 long regoffset; /* save register offset */
4126 long fregmask; /* save floating point register mask */
4127 long fregoffset; /* save floating point register offset */
4128 long frameoffset; /* frame size */
4129 short framereg; /* frame pointer register */
4130 short pcreg; /* offset or reg of return pc */
4131 long irpss; /* index into the runtime string table */
4133 struct exception_info *exception_info;/* pointer to exception array */
4135 #define cbRPDR sizeof (RPDR)
4136 #define rpdNil ((pRPDR) 0)
4138 /* Swap RPDR (runtime procedure table entry) for output. */
4140 static void ecoff_swap_rpdr_out
4141 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
4144 ecoff_swap_rpdr_out (abfd, in, ex)
4147 struct rpdr_ext *ex;
4149 /* ECOFF_PUT_OFF was defined in ecoffswap.h. */
4150 ECOFF_PUT_OFF (abfd, in->adr, ex->p_adr);
4151 H_PUT_32 (abfd, in->regmask, ex->p_regmask);
4152 H_PUT_32 (abfd, in->regoffset, ex->p_regoffset);
4153 H_PUT_32 (abfd, in->fregmask, ex->p_fregmask);
4154 H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset);
4155 H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset);
4157 H_PUT_16 (abfd, in->framereg, ex->p_framereg);
4158 H_PUT_16 (abfd, in->pcreg, ex->p_pcreg);
4160 H_PUT_32 (abfd, in->irpss, ex->p_irpss);
4162 ECOFF_PUT_OFF (abfd, in->exception_info, ex->p_exception_info);
4166 /* Read ECOFF debugging information from a .mdebug section into a
4167 ecoff_debug_info structure. */
4170 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
4173 struct ecoff_debug_info *debug;
4176 const struct ecoff_debug_swap *swap;
4177 char *ext_hdr = NULL;
4179 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4180 memset (debug, 0, sizeof (*debug));
4182 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
4183 if (ext_hdr == NULL && swap->external_hdr_size != 0)
4186 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
4187 swap->external_hdr_size)
4191 symhdr = &debug->symbolic_header;
4192 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
4194 /* The symbolic header contains absolute file offsets and sizes to
4196 #define READ(ptr, offset, count, size, type) \
4197 if (symhdr->count == 0) \
4198 debug->ptr = NULL; \
4201 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
4202 debug->ptr = (type) bfd_malloc (amt); \
4203 if (debug->ptr == NULL) \
4204 goto error_return; \
4205 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
4206 || bfd_bread (debug->ptr, amt, abfd) != amt) \
4207 goto error_return; \
4210 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
4211 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
4212 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
4213 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
4214 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
4215 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
4217 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
4218 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
4219 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
4220 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
4221 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
4225 debug->adjust = NULL;
4230 if (ext_hdr != NULL)
4232 if (debug->line != NULL)
4234 if (debug->external_dnr != NULL)
4235 free (debug->external_dnr);
4236 if (debug->external_pdr != NULL)
4237 free (debug->external_pdr);
4238 if (debug->external_sym != NULL)
4239 free (debug->external_sym);
4240 if (debug->external_opt != NULL)
4241 free (debug->external_opt);
4242 if (debug->external_aux != NULL)
4243 free (debug->external_aux);
4244 if (debug->ss != NULL)
4246 if (debug->ssext != NULL)
4247 free (debug->ssext);
4248 if (debug->external_fdr != NULL)
4249 free (debug->external_fdr);
4250 if (debug->external_rfd != NULL)
4251 free (debug->external_rfd);
4252 if (debug->external_ext != NULL)
4253 free (debug->external_ext);
4257 /* MIPS ELF local labels start with '$', not 'L'. */
4260 mips_elf_is_local_label_name (abfd, name)
4267 /* On Irix 6, the labels go back to starting with '.', so we accept
4268 the generic ELF local label syntax as well. */
4269 return _bfd_elf_is_local_label_name (abfd, name);
4272 /* MIPS ELF uses a special find_nearest_line routine in order the
4273 handle the ECOFF debugging information. */
4275 struct mips_elf_find_line
4277 struct ecoff_debug_info d;
4278 struct ecoff_find_line i;
4282 _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
4283 functionname_ptr, line_ptr)
4288 const char **filename_ptr;
4289 const char **functionname_ptr;
4290 unsigned int *line_ptr;
4294 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4295 filename_ptr, functionname_ptr,
4299 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4300 filename_ptr, functionname_ptr,
4302 (unsigned) (ABI_64_P (abfd) ? 8 : 0),
4303 &elf_tdata (abfd)->dwarf2_find_line_info))
4306 msec = bfd_get_section_by_name (abfd, ".mdebug");
4310 struct mips_elf_find_line *fi;
4311 const struct ecoff_debug_swap * const swap =
4312 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4314 /* If we are called during a link, mips_elf_final_link may have
4315 cleared the SEC_HAS_CONTENTS field. We force it back on here
4316 if appropriate (which it normally will be). */
4317 origflags = msec->flags;
4318 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
4319 msec->flags |= SEC_HAS_CONTENTS;
4321 fi = elf_tdata (abfd)->find_line_info;
4324 bfd_size_type external_fdr_size;
4327 struct fdr *fdr_ptr;
4328 bfd_size_type amt = sizeof (struct mips_elf_find_line);
4330 fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
4333 msec->flags = origflags;
4337 if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
4339 msec->flags = origflags;
4343 /* Swap in the FDR information. */
4344 amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
4345 fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
4346 if (fi->d.fdr == NULL)
4348 msec->flags = origflags;
4351 external_fdr_size = swap->external_fdr_size;
4352 fdr_ptr = fi->d.fdr;
4353 fraw_src = (char *) fi->d.external_fdr;
4354 fraw_end = (fraw_src
4355 + fi->d.symbolic_header.ifdMax * external_fdr_size);
4356 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
4357 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
4359 elf_tdata (abfd)->find_line_info = fi;
4361 /* Note that we don't bother to ever free this information.
4362 find_nearest_line is either called all the time, as in
4363 objdump -l, so the information should be saved, or it is
4364 rarely called, as in ld error messages, so the memory
4365 wasted is unimportant. Still, it would probably be a
4366 good idea for free_cached_info to throw it away. */
4369 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
4370 &fi->i, filename_ptr, functionname_ptr,
4373 msec->flags = origflags;
4377 msec->flags = origflags;
4380 /* Fall back on the generic ELF find_nearest_line routine. */
4382 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
4383 filename_ptr, functionname_ptr,
4387 /* The mips16 compiler uses a couple of special sections to handle
4388 floating point arguments.
4390 Section names that look like .mips16.fn.FNNAME contain stubs that
4391 copy floating point arguments from the fp regs to the gp regs and
4392 then jump to FNNAME. If any 32 bit function calls FNNAME, the
4393 call should be redirected to the stub instead. If no 32 bit
4394 function calls FNNAME, the stub should be discarded. We need to
4395 consider any reference to the function, not just a call, because
4396 if the address of the function is taken we will need the stub,
4397 since the address might be passed to a 32 bit function.
4399 Section names that look like .mips16.call.FNNAME contain stubs
4400 that copy floating point arguments from the gp regs to the fp
4401 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
4402 then any 16 bit function that calls FNNAME should be redirected
4403 to the stub instead. If FNNAME is not a 32 bit function, the
4404 stub should be discarded.
4406 .mips16.call.fp.FNNAME sections are similar, but contain stubs
4407 which call FNNAME and then copy the return value from the fp regs
4408 to the gp regs. These stubs store the return value in $18 while
4409 calling FNNAME; any function which might call one of these stubs
4410 must arrange to save $18 around the call. (This case is not
4411 needed for 32 bit functions that call 16 bit functions, because
4412 16 bit functions always return floating point values in both
4415 Note that in all cases FNNAME might be defined statically.
4416 Therefore, FNNAME is not used literally. Instead, the relocation
4417 information will indicate which symbol the section is for.
4419 We record any stubs that we find in the symbol table. */
4421 #define FN_STUB ".mips16.fn."
4422 #define CALL_STUB ".mips16.call."
4423 #define CALL_FP_STUB ".mips16.call.fp."
4425 /* MIPS ELF linker hash table. */
4427 struct mips_elf_link_hash_table
4429 struct elf_link_hash_table root;
4431 /* We no longer use this. */
4432 /* String section indices for the dynamic section symbols. */
4433 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
4435 /* The number of .rtproc entries. */
4436 bfd_size_type procedure_count;
4437 /* The size of the .compact_rel section (if SGI_COMPAT). */
4438 bfd_size_type compact_rel_size;
4439 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
4440 entry is set to the address of __rld_obj_head as in Irix 5. */
4441 boolean use_rld_obj_head;
4442 /* This is the value of the __rld_map or __rld_obj_head symbol. */
4444 /* This is set if we see any mips16 stub sections. */
4445 boolean mips16_stubs_seen;
4448 /* Look up an entry in a MIPS ELF linker hash table. */
4450 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
4451 ((struct mips_elf_link_hash_entry *) \
4452 elf_link_hash_lookup (&(table)->root, (string), (create), \
4455 /* Traverse a MIPS ELF linker hash table. */
4457 #define mips_elf_link_hash_traverse(table, func, info) \
4458 (elf_link_hash_traverse \
4460 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
4463 /* Get the MIPS ELF linker hash table from a link_info structure. */
4465 #define mips_elf_hash_table(p) \
4466 ((struct mips_elf_link_hash_table *) ((p)->hash))
4468 static boolean mips_elf_output_extsym
4469 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
4471 /* Create an entry in a MIPS ELF linker hash table. */
4473 static struct bfd_hash_entry *
4474 mips_elf_link_hash_newfunc (entry, table, string)
4475 struct bfd_hash_entry *entry;
4476 struct bfd_hash_table *table;
4479 struct mips_elf_link_hash_entry *ret =
4480 (struct mips_elf_link_hash_entry *) entry;
4482 /* Allocate the structure if it has not already been allocated by a
4484 if (ret == (struct mips_elf_link_hash_entry *) NULL)
4485 ret = ((struct mips_elf_link_hash_entry *)
4486 bfd_hash_allocate (table,
4487 sizeof (struct mips_elf_link_hash_entry)));
4488 if (ret == (struct mips_elf_link_hash_entry *) NULL)
4489 return (struct bfd_hash_entry *) ret;
4491 /* Call the allocation method of the superclass. */
4492 ret = ((struct mips_elf_link_hash_entry *)
4493 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
4495 if (ret != (struct mips_elf_link_hash_entry *) NULL)
4497 /* Set local fields. */
4498 memset (&ret->esym, 0, sizeof (EXTR));
4499 /* We use -2 as a marker to indicate that the information has
4500 not been set. -1 means there is no associated ifd. */
4502 ret->possibly_dynamic_relocs = 0;
4503 ret->readonly_reloc = false;
4504 ret->min_dyn_reloc_index = 0;
4505 ret->no_fn_stub = false;
4506 ret->fn_stub = NULL;
4507 ret->need_fn_stub = false;
4508 ret->call_stub = NULL;
4509 ret->call_fp_stub = NULL;
4512 return (struct bfd_hash_entry *) ret;
4516 _bfd_mips_elf_hide_symbol (info, entry, force_local)
4517 struct bfd_link_info *info;
4518 struct elf_link_hash_entry *entry;
4519 boolean force_local;
4523 struct mips_got_info *g;
4524 struct mips_elf_link_hash_entry *h;
4525 h = (struct mips_elf_link_hash_entry *) entry;
4526 dynobj = elf_hash_table (info)->dynobj;
4527 got = bfd_get_section_by_name (dynobj, ".got");
4528 g = (struct mips_got_info *) elf_section_data (got)->tdata;
4530 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
4532 /* FIXME: Do we allocate too much GOT space here? */
4534 got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
4537 /* Create a MIPS ELF linker hash table. */
4539 struct bfd_link_hash_table *
4540 _bfd_mips_elf_link_hash_table_create (abfd)
4543 struct mips_elf_link_hash_table *ret;
4544 bfd_size_type amt = sizeof (struct mips_elf_link_hash_table);
4546 ret = (struct mips_elf_link_hash_table *) bfd_alloc (abfd, amt);
4547 if (ret == (struct mips_elf_link_hash_table *) NULL)
4550 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
4551 mips_elf_link_hash_newfunc))
4553 bfd_release (abfd, ret);
4558 /* We no longer use this. */
4559 for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
4560 ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
4562 ret->procedure_count = 0;
4563 ret->compact_rel_size = 0;
4564 ret->use_rld_obj_head = false;
4566 ret->mips16_stubs_seen = false;
4568 return &ret->root.root;
4571 /* Hook called by the linker routine which adds symbols from an object
4572 file. We must handle the special MIPS section numbers here. */
4575 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
4577 struct bfd_link_info *info;
4578 const Elf_Internal_Sym *sym;
4580 flagword *flagsp ATTRIBUTE_UNUSED;
4584 if (SGI_COMPAT (abfd)
4585 && (abfd->flags & DYNAMIC) != 0
4586 && strcmp (*namep, "_rld_new_interface") == 0)
4588 /* Skip Irix 5 rld entry name. */
4593 switch (sym->st_shndx)
4596 /* Common symbols less than the GP size are automatically
4597 treated as SHN_MIPS_SCOMMON symbols. */
4598 if (sym->st_size > elf_gp_size (abfd)
4599 || IRIX_COMPAT (abfd) == ict_irix6)
4602 case SHN_MIPS_SCOMMON:
4603 *secp = bfd_make_section_old_way (abfd, ".scommon");
4604 (*secp)->flags |= SEC_IS_COMMON;
4605 *valp = sym->st_size;
4609 /* This section is used in a shared object. */
4610 if (elf_tdata (abfd)->elf_text_section == NULL)
4612 asymbol *elf_text_symbol;
4613 asection *elf_text_section;
4614 bfd_size_type amt = sizeof (asection);
4616 elf_text_section = bfd_zalloc (abfd, amt);
4617 if (elf_text_section == NULL)
4620 amt = sizeof (asymbol);
4621 elf_text_symbol = bfd_zalloc (abfd, amt);
4622 if (elf_text_symbol == NULL)
4625 /* Initialize the section. */
4627 elf_tdata (abfd)->elf_text_section = elf_text_section;
4628 elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
4630 elf_text_section->symbol = elf_text_symbol;
4631 elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
4633 elf_text_section->name = ".text";
4634 elf_text_section->flags = SEC_NO_FLAGS;
4635 elf_text_section->output_section = NULL;
4636 elf_text_section->owner = abfd;
4637 elf_text_symbol->name = ".text";
4638 elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
4639 elf_text_symbol->section = elf_text_section;
4641 /* This code used to do *secp = bfd_und_section_ptr if
4642 info->shared. I don't know why, and that doesn't make sense,
4643 so I took it out. */
4644 *secp = elf_tdata (abfd)->elf_text_section;
4647 case SHN_MIPS_ACOMMON:
4648 /* Fall through. XXX Can we treat this as allocated data? */
4650 /* This section is used in a shared object. */
4651 if (elf_tdata (abfd)->elf_data_section == NULL)
4653 asymbol *elf_data_symbol;
4654 asection *elf_data_section;
4655 bfd_size_type amt = sizeof (asection);
4657 elf_data_section = bfd_zalloc (abfd, amt);
4658 if (elf_data_section == NULL)
4661 amt = sizeof (asymbol);
4662 elf_data_symbol = bfd_zalloc (abfd, amt);
4663 if (elf_data_symbol == NULL)
4666 /* Initialize the section. */
4668 elf_tdata (abfd)->elf_data_section = elf_data_section;
4669 elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
4671 elf_data_section->symbol = elf_data_symbol;
4672 elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
4674 elf_data_section->name = ".data";
4675 elf_data_section->flags = SEC_NO_FLAGS;
4676 elf_data_section->output_section = NULL;
4677 elf_data_section->owner = abfd;
4678 elf_data_symbol->name = ".data";
4679 elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
4680 elf_data_symbol->section = elf_data_section;
4682 /* This code used to do *secp = bfd_und_section_ptr if
4683 info->shared. I don't know why, and that doesn't make sense,
4684 so I took it out. */
4685 *secp = elf_tdata (abfd)->elf_data_section;
4688 case SHN_MIPS_SUNDEFINED:
4689 *secp = bfd_und_section_ptr;
4693 if (SGI_COMPAT (abfd)
4695 && info->hash->creator == abfd->xvec
4696 && strcmp (*namep, "__rld_obj_head") == 0)
4698 struct elf_link_hash_entry *h;
4700 /* Mark __rld_obj_head as dynamic. */
4702 if (! (_bfd_generic_link_add_one_symbol
4703 (info, abfd, *namep, BSF_GLOBAL, *secp,
4704 (bfd_vma) *valp, (const char *) NULL, false,
4705 get_elf_backend_data (abfd)->collect,
4706 (struct bfd_link_hash_entry **) &h)))
4708 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4709 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4710 h->type = STT_OBJECT;
4712 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4715 mips_elf_hash_table (info)->use_rld_obj_head = true;
4718 /* If this is a mips16 text symbol, add 1 to the value to make it
4719 odd. This will cause something like .word SYM to come up with
4720 the right value when it is loaded into the PC. */
4721 if (sym->st_other == STO_MIPS16)
4727 /* Structure used to pass information to mips_elf_output_extsym. */
4732 struct bfd_link_info *info;
4733 struct ecoff_debug_info *debug;
4734 const struct ecoff_debug_swap *swap;
4738 /* This routine is used to write out ECOFF debugging external symbol
4739 information. It is called via mips_elf_link_hash_traverse. The
4740 ECOFF external symbol information must match the ELF external
4741 symbol information. Unfortunately, at this point we don't know
4742 whether a symbol is required by reloc information, so the two
4743 tables may wind up being different. We must sort out the external
4744 symbol information before we can set the final size of the .mdebug
4745 section, and we must set the size of the .mdebug section before we
4746 can relocate any sections, and we can't know which symbols are
4747 required by relocation until we relocate the sections.
4748 Fortunately, it is relatively unlikely that any symbol will be
4749 stripped but required by a reloc. In particular, it can not happen
4750 when generating a final executable. */
4753 mips_elf_output_extsym (h, data)
4754 struct mips_elf_link_hash_entry *h;
4757 struct extsym_info *einfo = (struct extsym_info *) data;
4759 asection *sec, *output_section;
4761 if (h->root.indx == -2)
4763 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4764 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
4765 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4766 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
4768 else if (einfo->info->strip == strip_all
4769 || (einfo->info->strip == strip_some
4770 && bfd_hash_lookup (einfo->info->keep_hash,
4771 h->root.root.root.string,
4772 false, false) == NULL))
4780 if (h->esym.ifd == -2)
4783 h->esym.cobol_main = 0;
4784 h->esym.weakext = 0;
4785 h->esym.reserved = 0;
4786 h->esym.ifd = ifdNil;
4787 h->esym.asym.value = 0;
4788 h->esym.asym.st = stGlobal;
4790 if (h->root.root.type == bfd_link_hash_undefined
4791 || h->root.root.type == bfd_link_hash_undefweak)
4795 /* Use undefined class. Also, set class and type for some
4797 name = h->root.root.root.string;
4798 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
4799 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
4801 h->esym.asym.sc = scData;
4802 h->esym.asym.st = stLabel;
4803 h->esym.asym.value = 0;
4805 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
4807 h->esym.asym.sc = scAbs;
4808 h->esym.asym.st = stLabel;
4809 h->esym.asym.value =
4810 mips_elf_hash_table (einfo->info)->procedure_count;
4812 else if (strcmp (name, "_gp_disp") == 0)
4814 h->esym.asym.sc = scAbs;
4815 h->esym.asym.st = stLabel;
4816 h->esym.asym.value = elf_gp (einfo->abfd);
4819 h->esym.asym.sc = scUndefined;
4821 else if (h->root.root.type != bfd_link_hash_defined
4822 && h->root.root.type != bfd_link_hash_defweak)
4823 h->esym.asym.sc = scAbs;
4828 sec = h->root.root.u.def.section;
4829 output_section = sec->output_section;
4831 /* When making a shared library and symbol h is the one from
4832 the another shared library, OUTPUT_SECTION may be null. */
4833 if (output_section == NULL)
4834 h->esym.asym.sc = scUndefined;
4837 name = bfd_section_name (output_section->owner, output_section);
4839 if (strcmp (name, ".text") == 0)
4840 h->esym.asym.sc = scText;
4841 else if (strcmp (name, ".data") == 0)
4842 h->esym.asym.sc = scData;
4843 else if (strcmp (name, ".sdata") == 0)
4844 h->esym.asym.sc = scSData;
4845 else if (strcmp (name, ".rodata") == 0
4846 || strcmp (name, ".rdata") == 0)
4847 h->esym.asym.sc = scRData;
4848 else if (strcmp (name, ".bss") == 0)
4849 h->esym.asym.sc = scBss;
4850 else if (strcmp (name, ".sbss") == 0)
4851 h->esym.asym.sc = scSBss;
4852 else if (strcmp (name, ".init") == 0)
4853 h->esym.asym.sc = scInit;
4854 else if (strcmp (name, ".fini") == 0)
4855 h->esym.asym.sc = scFini;
4857 h->esym.asym.sc = scAbs;
4861 h->esym.asym.reserved = 0;
4862 h->esym.asym.index = indexNil;
4865 if (h->root.root.type == bfd_link_hash_common)
4866 h->esym.asym.value = h->root.root.u.c.size;
4867 else if (h->root.root.type == bfd_link_hash_defined
4868 || h->root.root.type == bfd_link_hash_defweak)
4870 if (h->esym.asym.sc == scCommon)
4871 h->esym.asym.sc = scBss;
4872 else if (h->esym.asym.sc == scSCommon)
4873 h->esym.asym.sc = scSBss;
4875 sec = h->root.root.u.def.section;
4876 output_section = sec->output_section;
4877 if (output_section != NULL)
4878 h->esym.asym.value = (h->root.root.u.def.value
4879 + sec->output_offset
4880 + output_section->vma);
4882 h->esym.asym.value = 0;
4884 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4886 struct mips_elf_link_hash_entry *hd = h;
4887 boolean no_fn_stub = h->no_fn_stub;
4889 while (hd->root.root.type == bfd_link_hash_indirect)
4891 hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link;
4892 no_fn_stub = no_fn_stub || hd->no_fn_stub;
4897 /* Set type and value for a symbol with a function stub. */
4898 h->esym.asym.st = stProc;
4899 sec = hd->root.root.u.def.section;
4901 h->esym.asym.value = 0;
4904 output_section = sec->output_section;
4905 if (output_section != NULL)
4906 h->esym.asym.value = (hd->root.plt.offset
4907 + sec->output_offset
4908 + output_section->vma);
4910 h->esym.asym.value = 0;
4918 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
4919 h->root.root.root.string,
4922 einfo->failed = true;
4929 /* Create a runtime procedure table from the .mdebug section. */
4932 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
4935 struct bfd_link_info *info;
4937 struct ecoff_debug_info *debug;
4939 const struct ecoff_debug_swap *swap;
4940 HDRR *hdr = &debug->symbolic_header;
4942 struct rpdr_ext *erp;
4944 struct pdr_ext *epdr;
4945 struct sym_ext *esym;
4949 bfd_size_type count;
4950 unsigned long sindex;
4954 const char *no_name_func = _("static procedure (no name)");
4962 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4964 sindex = strlen (no_name_func) + 1;
4965 count = hdr->ipdMax;
4968 size = swap->external_pdr_size;
4970 epdr = (struct pdr_ext *) bfd_malloc (size * count);
4974 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
4977 size = sizeof (RPDR);
4978 rp = rpdr = (RPDR *) bfd_malloc (size * count);
4982 size = sizeof (char *);
4983 sv = (char **) bfd_malloc (size * count);
4987 count = hdr->isymMax;
4988 size = swap->external_sym_size;
4989 esym = (struct sym_ext *) bfd_malloc (size * count);
4993 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
4996 count = hdr->issMax;
4997 ss = (char *) bfd_malloc (count);
5000 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
5003 count = hdr->ipdMax;
5004 for (i = 0; i < (unsigned long) count; i++, rp++)
5006 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
5007 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
5008 rp->adr = sym.value;
5009 rp->regmask = pdr.regmask;
5010 rp->regoffset = pdr.regoffset;
5011 rp->fregmask = pdr.fregmask;
5012 rp->fregoffset = pdr.fregoffset;
5013 rp->frameoffset = pdr.frameoffset;
5014 rp->framereg = pdr.framereg;
5015 rp->pcreg = pdr.pcreg;
5017 sv[i] = ss + sym.iss;
5018 sindex += strlen (sv[i]) + 1;
5022 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
5023 size = BFD_ALIGN (size, 16);
5024 rtproc = (PTR) bfd_alloc (abfd, size);
5027 mips_elf_hash_table (info)->procedure_count = 0;
5031 mips_elf_hash_table (info)->procedure_count = count + 2;
5033 erp = (struct rpdr_ext *) rtproc;
5034 memset (erp, 0, sizeof (struct rpdr_ext));
5036 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
5037 strcpy (str, no_name_func);
5038 str += strlen (no_name_func) + 1;
5039 for (i = 0; i < count; i++)
5041 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
5042 strcpy (str, sv[i]);
5043 str += strlen (sv[i]) + 1;
5045 ECOFF_PUT_OFF (abfd, -1, (erp + count)->p_adr);
5047 /* Set the size and contents of .rtproc section. */
5048 s->_raw_size = size;
5049 s->contents = (bfd_byte *) rtproc;
5051 /* Skip this section later on (I don't think this currently
5052 matters, but someday it might). */
5053 s->link_order_head = (struct bfd_link_order *) NULL;
5082 /* A comparison routine used to sort .gptab entries. */
5085 gptab_compare (p1, p2)
5089 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
5090 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
5092 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
5095 /* We need to use a special link routine to handle the .reginfo and
5096 the .mdebug sections. We need to merge all instances of these
5097 sections together, not write them all out sequentially. */
5100 _bfd_mips_elf_final_link (abfd, info)
5102 struct bfd_link_info *info;
5106 struct bfd_link_order *p;
5107 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
5108 asection *rtproc_sec;
5109 Elf32_RegInfo reginfo;
5110 struct ecoff_debug_info debug;
5111 const struct ecoff_debug_swap *swap
5112 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
5113 HDRR *symhdr = &debug.symbolic_header;
5114 PTR mdebug_handle = NULL;
5120 static const char * const secname[] =
5122 ".text", ".init", ".fini", ".data",
5123 ".rodata", ".sdata", ".sbss", ".bss"
5125 static const int sc[] =
5127 scText, scInit, scFini, scData,
5128 scRData, scSData, scSBss, scBss
5131 /* If all the things we linked together were PIC, but we're
5132 producing an executable (rather than a shared object), then the
5133 resulting file is CPIC (i.e., it calls PIC code.) */
5135 && !info->relocateable
5136 && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
5138 elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
5139 elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
5142 /* We'd carefully arranged the dynamic symbol indices, and then the
5143 generic size_dynamic_sections renumbered them out from under us.
5144 Rather than trying somehow to prevent the renumbering, just do
5146 if (elf_hash_table (info)->dynamic_sections_created)
5150 struct mips_got_info *g;
5152 /* When we resort, we must tell mips_elf_sort_hash_table what
5153 the lowest index it may use is. That's the number of section
5154 symbols we're going to add. The generic ELF linker only
5155 adds these symbols when building a shared object. Note that
5156 we count the sections after (possibly) removing the .options
5158 if (!mips_elf_sort_hash_table (info, (info->shared
5159 ? bfd_count_sections (abfd) + 1
5163 /* Make sure we didn't grow the global .got region. */
5164 dynobj = elf_hash_table (info)->dynobj;
5165 got = bfd_get_section_by_name (dynobj, ".got");
5166 g = (struct mips_got_info *) elf_section_data (got)->tdata;
5168 if (g->global_gotsym != NULL)
5169 BFD_ASSERT ((elf_hash_table (info)->dynsymcount
5170 - g->global_gotsym->dynindx)
5171 <= g->global_gotno);
5174 /* On IRIX5, we omit the .options section. On IRIX6, however, we
5175 include it, even though we don't process it quite right. (Some
5176 entries are supposed to be merged.) Empirically, we seem to be
5177 better off including it then not. */
5178 if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
5179 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
5181 if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
5183 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
5184 if (p->type == bfd_indirect_link_order)
5185 p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS;
5186 (*secpp)->link_order_head = NULL;
5187 bfd_section_list_remove (abfd, secpp);
5188 --abfd->section_count;
5194 /* Get a value for the GP register. */
5195 if (elf_gp (abfd) == 0)
5197 struct bfd_link_hash_entry *h;
5199 h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
5200 if (h != (struct bfd_link_hash_entry *) NULL
5201 && h->type == bfd_link_hash_defined)
5202 elf_gp (abfd) = (h->u.def.value
5203 + h->u.def.section->output_section->vma
5204 + h->u.def.section->output_offset);
5205 else if (info->relocateable)
5209 /* Find the GP-relative section with the lowest offset. */
5211 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
5213 && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
5216 /* And calculate GP relative to that. */
5217 elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
5221 /* If the relocate_section function needs to do a reloc
5222 involving the GP value, it should make a reloc_dangerous
5223 callback to warn that GP is not defined. */
5227 /* Go through the sections and collect the .reginfo and .mdebug
5231 gptab_data_sec = NULL;
5232 gptab_bss_sec = NULL;
5233 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
5235 if (strcmp (o->name, ".reginfo") == 0)
5237 memset (®info, 0, sizeof reginfo);
5239 /* We have found the .reginfo section in the output file.
5240 Look through all the link_orders comprising it and merge
5241 the information together. */
5242 for (p = o->link_order_head;
5243 p != (struct bfd_link_order *) NULL;
5246 asection *input_section;
5248 Elf32_External_RegInfo ext;
5251 if (p->type != bfd_indirect_link_order)
5253 if (p->type == bfd_fill_link_order)
5258 input_section = p->u.indirect.section;
5259 input_bfd = input_section->owner;
5261 /* The linker emulation code has probably clobbered the
5262 size to be zero bytes. */
5263 if (input_section->_raw_size == 0)
5264 input_section->_raw_size = sizeof (Elf32_External_RegInfo);
5266 if (! bfd_get_section_contents (input_bfd, input_section,
5269 (bfd_size_type) sizeof ext))
5272 bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
5274 reginfo.ri_gprmask |= sub.ri_gprmask;
5275 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
5276 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
5277 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
5278 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
5280 /* ri_gp_value is set by the function
5281 mips_elf32_section_processing when the section is
5282 finally written out. */
5284 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5285 elf_link_input_bfd ignores this section. */
5286 input_section->flags &= ~SEC_HAS_CONTENTS;
5289 /* Size has been set in mips_elf_always_size_sections */
5290 BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
5292 /* Skip this section later on (I don't think this currently
5293 matters, but someday it might). */
5294 o->link_order_head = (struct bfd_link_order *) NULL;
5299 if (strcmp (o->name, ".mdebug") == 0)
5301 struct extsym_info einfo;
5304 /* We have found the .mdebug section in the output file.
5305 Look through all the link_orders comprising it and merge
5306 the information together. */
5307 symhdr->magic = swap->sym_magic;
5308 /* FIXME: What should the version stamp be? */
5310 symhdr->ilineMax = 0;
5314 symhdr->isymMax = 0;
5315 symhdr->ioptMax = 0;
5316 symhdr->iauxMax = 0;
5318 symhdr->issExtMax = 0;
5321 symhdr->iextMax = 0;
5323 /* We accumulate the debugging information itself in the
5324 debug_info structure. */
5326 debug.external_dnr = NULL;
5327 debug.external_pdr = NULL;
5328 debug.external_sym = NULL;
5329 debug.external_opt = NULL;
5330 debug.external_aux = NULL;
5332 debug.ssext = debug.ssext_end = NULL;
5333 debug.external_fdr = NULL;
5334 debug.external_rfd = NULL;
5335 debug.external_ext = debug.external_ext_end = NULL;
5337 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
5338 if (mdebug_handle == (PTR) NULL)
5342 esym.cobol_main = 0;
5346 esym.asym.iss = issNil;
5347 esym.asym.st = stLocal;
5348 esym.asym.reserved = 0;
5349 esym.asym.index = indexNil;
5351 for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++)
5353 esym.asym.sc = sc[i];
5354 s = bfd_get_section_by_name (abfd, secname[i]);
5357 esym.asym.value = s->vma;
5358 last = s->vma + s->_raw_size;
5361 esym.asym.value = last;
5362 if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
5367 for (p = o->link_order_head;
5368 p != (struct bfd_link_order *) NULL;
5371 asection *input_section;
5373 const struct ecoff_debug_swap *input_swap;
5374 struct ecoff_debug_info input_debug;
5378 if (p->type != bfd_indirect_link_order)
5380 if (p->type == bfd_fill_link_order)
5385 input_section = p->u.indirect.section;
5386 input_bfd = input_section->owner;
5388 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
5389 || (get_elf_backend_data (input_bfd)
5390 ->elf_backend_ecoff_debug_swap) == NULL)
5392 /* I don't know what a non MIPS ELF bfd would be
5393 doing with a .mdebug section, but I don't really
5394 want to deal with it. */
5398 input_swap = (get_elf_backend_data (input_bfd)
5399 ->elf_backend_ecoff_debug_swap);
5401 BFD_ASSERT (p->size == input_section->_raw_size);
5403 /* The ECOFF linking code expects that we have already
5404 read in the debugging information and set up an
5405 ecoff_debug_info structure, so we do that now. */
5406 if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
5410 if (! (bfd_ecoff_debug_accumulate
5411 (mdebug_handle, abfd, &debug, swap, input_bfd,
5412 &input_debug, input_swap, info)))
5415 /* Loop through the external symbols. For each one with
5416 interesting information, try to find the symbol in
5417 the linker global hash table and save the information
5418 for the output external symbols. */
5419 eraw_src = input_debug.external_ext;
5420 eraw_end = (eraw_src
5421 + (input_debug.symbolic_header.iextMax
5422 * input_swap->external_ext_size));
5424 eraw_src < eraw_end;
5425 eraw_src += input_swap->external_ext_size)
5429 struct mips_elf_link_hash_entry *h;
5431 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
5432 if (ext.asym.sc == scNil
5433 || ext.asym.sc == scUndefined
5434 || ext.asym.sc == scSUndefined)
5437 name = input_debug.ssext + ext.asym.iss;
5438 h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
5439 name, false, false, true);
5440 if (h == NULL || h->esym.ifd != -2)
5446 < input_debug.symbolic_header.ifdMax);
5447 ext.ifd = input_debug.ifdmap[ext.ifd];
5453 /* Free up the information we just read. */
5454 free (input_debug.line);
5455 free (input_debug.external_dnr);
5456 free (input_debug.external_pdr);
5457 free (input_debug.external_sym);
5458 free (input_debug.external_opt);
5459 free (input_debug.external_aux);
5460 free (input_debug.ss);
5461 free (input_debug.ssext);
5462 free (input_debug.external_fdr);
5463 free (input_debug.external_rfd);
5464 free (input_debug.external_ext);
5466 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5467 elf_link_input_bfd ignores this section. */
5468 input_section->flags &= ~SEC_HAS_CONTENTS;
5471 if (SGI_COMPAT (abfd) && info->shared)
5473 /* Create .rtproc section. */
5474 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
5475 if (rtproc_sec == NULL)
5477 flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
5478 | SEC_LINKER_CREATED | SEC_READONLY);
5480 rtproc_sec = bfd_make_section (abfd, ".rtproc");
5481 if (rtproc_sec == NULL
5482 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
5483 || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
5487 if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
5488 info, rtproc_sec, &debug))
5492 /* Build the external symbol information. */
5495 einfo.debug = &debug;
5497 einfo.failed = false;
5498 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
5499 mips_elf_output_extsym,
5504 /* Set the size of the .mdebug section. */
5505 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
5507 /* Skip this section later on (I don't think this currently
5508 matters, but someday it might). */
5509 o->link_order_head = (struct bfd_link_order *) NULL;
5514 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
5516 const char *subname;
5519 Elf32_External_gptab *ext_tab;
5522 /* The .gptab.sdata and .gptab.sbss sections hold
5523 information describing how the small data area would
5524 change depending upon the -G switch. These sections
5525 not used in executables files. */
5526 if (! info->relocateable)
5528 for (p = o->link_order_head;
5529 p != (struct bfd_link_order *) NULL;
5532 asection *input_section;
5534 if (p->type != bfd_indirect_link_order)
5536 if (p->type == bfd_fill_link_order)
5541 input_section = p->u.indirect.section;
5543 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5544 elf_link_input_bfd ignores this section. */
5545 input_section->flags &= ~SEC_HAS_CONTENTS;
5548 /* Skip this section later on (I don't think this
5549 currently matters, but someday it might). */
5550 o->link_order_head = (struct bfd_link_order *) NULL;
5552 /* Really remove the section. */
5553 for (secpp = &abfd->sections;
5555 secpp = &(*secpp)->next)
5557 bfd_section_list_remove (abfd, secpp);
5558 --abfd->section_count;
5563 /* There is one gptab for initialized data, and one for
5564 uninitialized data. */
5565 if (strcmp (o->name, ".gptab.sdata") == 0)
5567 else if (strcmp (o->name, ".gptab.sbss") == 0)
5571 (*_bfd_error_handler)
5572 (_("%s: illegal section name `%s'"),
5573 bfd_get_filename (abfd), o->name);
5574 bfd_set_error (bfd_error_nonrepresentable_section);
5578 /* The linker script always combines .gptab.data and
5579 .gptab.sdata into .gptab.sdata, and likewise for
5580 .gptab.bss and .gptab.sbss. It is possible that there is
5581 no .sdata or .sbss section in the output file, in which
5582 case we must change the name of the output section. */
5583 subname = o->name + sizeof ".gptab" - 1;
5584 if (bfd_get_section_by_name (abfd, subname) == NULL)
5586 if (o == gptab_data_sec)
5587 o->name = ".gptab.data";
5589 o->name = ".gptab.bss";
5590 subname = o->name + sizeof ".gptab" - 1;
5591 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
5594 /* Set up the first entry. */
5596 amt = c * sizeof (Elf32_gptab);
5597 tab = (Elf32_gptab *) bfd_malloc (amt);
5600 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
5601 tab[0].gt_header.gt_unused = 0;
5603 /* Combine the input sections. */
5604 for (p = o->link_order_head;
5605 p != (struct bfd_link_order *) NULL;
5608 asection *input_section;
5612 bfd_size_type gpentry;
5614 if (p->type != bfd_indirect_link_order)
5616 if (p->type == bfd_fill_link_order)
5621 input_section = p->u.indirect.section;
5622 input_bfd = input_section->owner;
5624 /* Combine the gptab entries for this input section one
5625 by one. We know that the input gptab entries are
5626 sorted by ascending -G value. */
5627 size = bfd_section_size (input_bfd, input_section);
5629 for (gpentry = sizeof (Elf32_External_gptab);
5631 gpentry += sizeof (Elf32_External_gptab))
5633 Elf32_External_gptab ext_gptab;
5634 Elf32_gptab int_gptab;
5640 if (! (bfd_get_section_contents
5641 (input_bfd, input_section, (PTR) &ext_gptab,
5643 (bfd_size_type) sizeof (Elf32_External_gptab))))
5649 bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
5651 val = int_gptab.gt_entry.gt_g_value;
5652 add = int_gptab.gt_entry.gt_bytes - last;
5655 for (look = 1; look < c; look++)
5657 if (tab[look].gt_entry.gt_g_value >= val)
5658 tab[look].gt_entry.gt_bytes += add;
5660 if (tab[look].gt_entry.gt_g_value == val)
5666 Elf32_gptab *new_tab;
5669 /* We need a new table entry. */
5670 amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab);
5671 new_tab = (Elf32_gptab *) bfd_realloc ((PTR) tab, amt);
5672 if (new_tab == NULL)
5678 tab[c].gt_entry.gt_g_value = val;
5679 tab[c].gt_entry.gt_bytes = add;
5681 /* Merge in the size for the next smallest -G
5682 value, since that will be implied by this new
5685 for (look = 1; look < c; look++)
5687 if (tab[look].gt_entry.gt_g_value < val
5689 || (tab[look].gt_entry.gt_g_value
5690 > tab[max].gt_entry.gt_g_value)))
5694 tab[c].gt_entry.gt_bytes +=
5695 tab[max].gt_entry.gt_bytes;
5700 last = int_gptab.gt_entry.gt_bytes;
5703 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5704 elf_link_input_bfd ignores this section. */
5705 input_section->flags &= ~SEC_HAS_CONTENTS;
5708 /* The table must be sorted by -G value. */
5710 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
5712 /* Swap out the table. */
5713 amt = (bfd_size_type) c * sizeof (Elf32_External_gptab);
5714 ext_tab = (Elf32_External_gptab *) bfd_alloc (abfd, amt);
5715 if (ext_tab == NULL)
5721 for (j = 0; j < c; j++)
5722 bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j);
5725 o->_raw_size = c * sizeof (Elf32_External_gptab);
5726 o->contents = (bfd_byte *) ext_tab;
5728 /* Skip this section later on (I don't think this currently
5729 matters, but someday it might). */
5730 o->link_order_head = (struct bfd_link_order *) NULL;
5734 /* Invoke the regular ELF backend linker to do all the work. */
5735 if (ABI_64_P (abfd))
5738 if (!bfd_elf64_bfd_final_link (abfd, info))
5745 else if (!bfd_elf32_bfd_final_link (abfd, info))
5748 /* Now write out the computed sections. */
5750 if (reginfo_sec != (asection *) NULL)
5752 Elf32_External_RegInfo ext;
5754 bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
5755 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
5756 (file_ptr) 0, (bfd_size_type) sizeof ext))
5760 if (mdebug_sec != (asection *) NULL)
5762 BFD_ASSERT (abfd->output_has_begun);
5763 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
5765 mdebug_sec->filepos))
5768 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
5771 if (gptab_data_sec != (asection *) NULL)
5773 if (! bfd_set_section_contents (abfd, gptab_data_sec,
5774 gptab_data_sec->contents,
5776 gptab_data_sec->_raw_size))
5780 if (gptab_bss_sec != (asection *) NULL)
5782 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
5783 gptab_bss_sec->contents,
5785 gptab_bss_sec->_raw_size))
5789 if (SGI_COMPAT (abfd))
5791 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
5792 if (rtproc_sec != NULL)
5794 if (! bfd_set_section_contents (abfd, rtproc_sec,
5795 rtproc_sec->contents,
5797 rtproc_sec->_raw_size))
5805 /* This function is called via qsort() to sort the dynamic relocation
5806 entries by increasing r_symndx value. */
5809 sort_dynamic_relocs (arg1, arg2)
5813 const Elf32_External_Rel *ext_reloc1 = (const Elf32_External_Rel *) arg1;
5814 const Elf32_External_Rel *ext_reloc2 = (const Elf32_External_Rel *) arg2;
5816 Elf_Internal_Rel int_reloc1;
5817 Elf_Internal_Rel int_reloc2;
5819 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc1, &int_reloc1);
5820 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc2, &int_reloc2);
5822 return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info));
5825 /* Returns the GOT section for ABFD. */
5828 mips_elf_got_section (abfd)
5831 return bfd_get_section_by_name (abfd, ".got");
5834 /* Returns the GOT information associated with the link indicated by
5835 INFO. If SGOTP is non-NULL, it is filled in with the GOT
5838 static struct mips_got_info *
5839 mips_elf_got_info (abfd, sgotp)
5844 struct mips_got_info *g;
5846 sgot = mips_elf_got_section (abfd);
5847 BFD_ASSERT (sgot != NULL);
5848 BFD_ASSERT (elf_section_data (sgot) != NULL);
5849 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5850 BFD_ASSERT (g != NULL);
5857 /* Return whether a relocation is against a local symbol. */
5860 mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
5863 const Elf_Internal_Rela *relocation;
5864 asection **local_sections;
5865 boolean check_forced;
5867 unsigned long r_symndx;
5868 Elf_Internal_Shdr *symtab_hdr;
5869 struct mips_elf_link_hash_entry *h;
5872 r_symndx = ELF32_R_SYM (relocation->r_info);
5873 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5874 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
5876 if (r_symndx < extsymoff)
5878 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
5883 /* Look up the hash table to check whether the symbol
5884 was forced local. */
5885 h = (struct mips_elf_link_hash_entry *)
5886 elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
5887 /* Find the real hash-table entry for this symbol. */
5888 while (h->root.root.type == bfd_link_hash_indirect
5889 || h->root.root.type == bfd_link_hash_warning)
5890 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
5891 if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
5898 /* Sign-extend VALUE, which has the indicated number of BITS. */
5901 mips_elf_sign_extend (value, bits)
5905 if (value & ((bfd_vma) 1 << (bits - 1)))
5906 /* VALUE is negative. */
5907 value |= ((bfd_vma) - 1) << bits;
5912 /* Return non-zero if the indicated VALUE has overflowed the maximum
5913 range expressable by a signed number with the indicated number of
5917 mips_elf_overflow_p (value, bits)
5921 bfd_signed_vma svalue = (bfd_signed_vma) value;
5923 if (svalue > (1 << (bits - 1)) - 1)
5924 /* The value is too big. */
5926 else if (svalue < -(1 << (bits - 1)))
5927 /* The value is too small. */
5934 /* Calculate the %high function. */
5937 mips_elf_high (value)
5940 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
5943 /* Calculate the %higher function. */
5946 mips_elf_higher (value)
5947 bfd_vma value ATTRIBUTE_UNUSED;
5950 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
5953 return (bfd_vma) -1;
5957 /* Calculate the %highest function. */
5960 mips_elf_highest (value)
5961 bfd_vma value ATTRIBUTE_UNUSED;
5964 return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff;
5967 return (bfd_vma) -1;
5971 /* Returns the GOT index for the global symbol indicated by H. */
5974 mips_elf_global_got_index (abfd, h)
5976 struct elf_link_hash_entry *h;
5980 struct mips_got_info *g;
5982 g = mips_elf_got_info (abfd, &sgot);
5984 /* Once we determine the global GOT entry with the lowest dynamic
5985 symbol table index, we must put all dynamic symbols with greater
5986 indices into the GOT. That makes it easy to calculate the GOT
5988 BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
5989 index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
5990 * MIPS_ELF_GOT_SIZE (abfd));
5991 BFD_ASSERT (index < sgot->_raw_size);
5996 /* Returns the offset for the entry at the INDEXth position
6000 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
6008 sgot = mips_elf_got_section (dynobj);
6009 gp = _bfd_get_gp_value (output_bfd);
6010 return (sgot->output_section->vma + sgot->output_offset + index -
6014 /* If H is a symbol that needs a global GOT entry, but has a dynamic
6015 symbol table index lower than any we've seen to date, record it for
6019 mips_elf_record_global_got_symbol (h, info, g)
6020 struct elf_link_hash_entry *h;
6021 struct bfd_link_info *info;
6022 struct mips_got_info *g ATTRIBUTE_UNUSED;
6024 /* A global symbol in the GOT must also be in the dynamic symbol
6026 if (h->dynindx == -1
6027 && !bfd_elf32_link_record_dynamic_symbol (info, h))
6030 /* If we've already marked this entry as needing GOT space, we don't
6031 need to do it again. */
6032 if (h->got.offset != (bfd_vma) -1)
6035 /* By setting this to a value other than -1, we are indicating that
6036 there needs to be a GOT entry for H. Avoid using zero, as the
6037 generic ELF copy_indirect_symbol tests for <= 0. */
6043 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
6044 the dynamic symbols. */
6046 struct mips_elf_hash_sort_data
6048 /* The symbol in the global GOT with the lowest dynamic symbol table
6050 struct elf_link_hash_entry *low;
6051 /* The least dynamic symbol table index corresponding to a symbol
6052 with a GOT entry. */
6053 long min_got_dynindx;
6054 /* The greatest dynamic symbol table index not corresponding to a
6055 symbol without a GOT entry. */
6056 long max_non_got_dynindx;
6059 /* If H needs a GOT entry, assign it the highest available dynamic
6060 index. Otherwise, assign it the lowest available dynamic
6064 mips_elf_sort_hash_table_f (h, data)
6065 struct mips_elf_link_hash_entry *h;
6068 struct mips_elf_hash_sort_data *hsd
6069 = (struct mips_elf_hash_sort_data *) data;
6071 /* Symbols without dynamic symbol table entries aren't interesting
6073 if (h->root.dynindx == -1)
6076 if (h->root.got.offset != 1)
6077 h->root.dynindx = hsd->max_non_got_dynindx++;
6080 h->root.dynindx = --hsd->min_got_dynindx;
6081 hsd->low = (struct elf_link_hash_entry *) h;
6087 /* Sort the dynamic symbol table so that symbols that need GOT entries
6088 appear towards the end. This reduces the amount of GOT space
6089 required. MAX_LOCAL is used to set the number of local symbols
6090 known to be in the dynamic symbol table. During
6091 mips_elf_size_dynamic_sections, this value is 1. Afterward, the
6092 section symbols are added and the count is higher. */
6095 mips_elf_sort_hash_table (info, max_local)
6096 struct bfd_link_info *info;
6097 unsigned long max_local;
6099 struct mips_elf_hash_sort_data hsd;
6100 struct mips_got_info *g;
6103 dynobj = elf_hash_table (info)->dynobj;
6106 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
6107 hsd.max_non_got_dynindx = max_local;
6108 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
6109 elf_hash_table (info)),
6110 mips_elf_sort_hash_table_f,
6113 /* There should have been enough room in the symbol table to
6114 accomodate both the GOT and non-GOT symbols. */
6115 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
6117 /* Now we know which dynamic symbol has the lowest dynamic symbol
6118 table index in the GOT. */
6119 g = mips_elf_got_info (dynobj, NULL);
6120 g->global_gotsym = hsd.low;
6125 /* Create a local GOT entry for VALUE. Return the index of the entry,
6126 or -1 if it could not be created. */
6129 mips_elf_create_local_got_entry (abfd, g, sgot, value)
6131 struct mips_got_info *g;
6135 if (g->assigned_gotno >= g->local_gotno)
6137 /* We didn't allocate enough space in the GOT. */
6138 (*_bfd_error_handler)
6139 (_("not enough GOT space for local GOT entries"));
6140 bfd_set_error (bfd_error_bad_value);
6141 return (bfd_vma) -1;
6144 MIPS_ELF_PUT_WORD (abfd, value,
6146 + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
6147 return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
6150 /* Returns the GOT offset at which the indicated address can be found.
6151 If there is not yet a GOT entry for this value, create one. Returns
6152 -1 if no satisfactory GOT offset can be found. */
6155 mips_elf_local_got_index (abfd, info, value)
6157 struct bfd_link_info *info;
6161 struct mips_got_info *g;
6164 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6166 /* Look to see if we already have an appropriate entry. */
6167 for (entry = (sgot->contents
6168 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6169 entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6170 entry += MIPS_ELF_GOT_SIZE (abfd))
6172 bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
6173 if (address == value)
6174 return entry - sgot->contents;
6177 return mips_elf_create_local_got_entry (abfd, g, sgot, value);
6180 /* Find a GOT entry that is within 32KB of the VALUE. These entries
6181 are supposed to be placed at small offsets in the GOT, i.e.,
6182 within 32KB of GP. Return the index into the GOT for this page,
6183 and store the offset from this entry to the desired address in
6184 OFFSETP, if it is non-NULL. */
6187 mips_elf_got_page (abfd, info, value, offsetp)
6189 struct bfd_link_info *info;
6194 struct mips_got_info *g;
6196 bfd_byte *last_entry;
6200 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6202 /* Look to see if we aleady have an appropriate entry. */
6203 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6204 for (entry = (sgot->contents
6205 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6206 entry != last_entry;
6207 entry += MIPS_ELF_GOT_SIZE (abfd))
6209 address = MIPS_ELF_GET_WORD (abfd, entry);
6211 if (!mips_elf_overflow_p (value - address, 16))
6213 /* This entry will serve as the page pointer. We can add a
6214 16-bit number to it to get the actual address. */
6215 index = entry - sgot->contents;
6220 /* If we didn't have an appropriate entry, we create one now. */
6221 if (entry == last_entry)
6222 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
6226 address = MIPS_ELF_GET_WORD (abfd, entry);
6227 *offsetp = value - address;
6233 /* Find a GOT entry whose higher-order 16 bits are the same as those
6234 for value. Return the index into the GOT for this entry. */
6237 mips_elf_got16_entry (abfd, info, value, external)
6239 struct bfd_link_info *info;
6244 struct mips_got_info *g;
6246 bfd_byte *last_entry;
6252 /* Although the ABI says that it is "the high-order 16 bits" that we
6253 want, it is really the %high value. The complete value is
6254 calculated with a `addiu' of a LO16 relocation, just as with a
6256 value = mips_elf_high (value) << 16;
6259 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6261 /* Look to see if we already have an appropriate entry. */
6262 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6263 for (entry = (sgot->contents
6264 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6265 entry != last_entry;
6266 entry += MIPS_ELF_GOT_SIZE (abfd))
6268 address = MIPS_ELF_GET_WORD (abfd, entry);
6269 if (address == value)
6271 /* This entry has the right high-order 16 bits, and the low-order
6272 16 bits are set to zero. */
6273 index = entry - sgot->contents;
6278 /* If we didn't have an appropriate entry, we create one now. */
6279 if (entry == last_entry)
6280 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
6285 /* Returns the first relocation of type r_type found, beginning with
6286 RELOCATION. RELEND is one-past-the-end of the relocation table. */
6288 static const Elf_Internal_Rela *
6289 mips_elf_next_relocation (r_type, relocation, relend)
6290 unsigned int r_type;
6291 const Elf_Internal_Rela *relocation;
6292 const Elf_Internal_Rela *relend;
6294 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
6295 immediately following. However, for the IRIX6 ABI, the next
6296 relocation may be a composed relocation consisting of several
6297 relocations for the same address. In that case, the R_MIPS_LO16
6298 relocation may occur as one of these. We permit a similar
6299 extension in general, as that is useful for GCC. */
6300 while (relocation < relend)
6302 if (ELF32_R_TYPE (relocation->r_info) == r_type)
6308 /* We didn't find it. */
6309 bfd_set_error (bfd_error_bad_value);
6313 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
6314 is the original relocation, which is now being transformed into a
6315 dynamic relocation. The ADDENDP is adjusted if necessary; the
6316 caller should store the result in place of the original addend. */
6319 mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
6320 symbol, addendp, input_section)
6322 struct bfd_link_info *info;
6323 const Elf_Internal_Rela *rel;
6324 struct mips_elf_link_hash_entry *h;
6328 asection *input_section;
6330 Elf_Internal_Rel outrel;
6336 r_type = ELF32_R_TYPE (rel->r_info);
6337 dynobj = elf_hash_table (info)->dynobj;
6339 = bfd_get_section_by_name (dynobj,
6340 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
6341 BFD_ASSERT (sreloc != NULL);
6342 BFD_ASSERT (sreloc->contents != NULL);
6343 BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd)
6344 < sreloc->_raw_size);
6348 _bfd_elf_section_offset (output_bfd, info, input_section, rel->r_offset);
6349 if (outrel.r_offset == (bfd_vma) -1)
6352 /* If we've decided to skip this relocation, just output an empty
6353 record. Note that R_MIPS_NONE == 0, so that this call to memset
6354 is a way of setting R_TYPE to R_MIPS_NONE. */
6356 memset (&outrel, 0, sizeof (outrel));
6360 bfd_vma section_offset;
6362 /* We must now calculate the dynamic symbol table index to use
6363 in the relocation. */
6365 && (! info->symbolic || (h->root.elf_link_hash_flags
6366 & ELF_LINK_HASH_DEF_REGULAR) == 0))
6368 indx = h->root.dynindx;
6369 /* h->root.dynindx may be -1 if this symbol was marked to
6376 if (sec != NULL && bfd_is_abs_section (sec))
6378 else if (sec == NULL || sec->owner == NULL)
6380 bfd_set_error (bfd_error_bad_value);
6385 indx = elf_section_data (sec->output_section)->dynindx;
6390 /* Figure out how far the target of the relocation is from
6391 the beginning of its section. */
6392 section_offset = symbol - sec->output_section->vma;
6393 /* The relocation we're building is section-relative.
6394 Therefore, the original addend must be adjusted by the
6396 *addendp += section_offset;
6397 /* Now, the relocation is just against the section. */
6398 symbol = sec->output_section->vma;
6401 /* If the relocation was previously an absolute relocation and
6402 this symbol will not be referred to by the relocation, we must
6403 adjust it by the value we give it in the dynamic symbol table.
6404 Otherwise leave the job up to the dynamic linker. */
6405 if (!indx && r_type != R_MIPS_REL32)
6408 /* The relocation is always an REL32 relocation because we don't
6409 know where the shared library will wind up at load-time. */
6410 outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
6412 /* Adjust the output offset of the relocation to reference the
6413 correct location in the output file. */
6414 outrel.r_offset += (input_section->output_section->vma
6415 + input_section->output_offset);
6418 /* Put the relocation back out. We have to use the special
6419 relocation outputter in the 64-bit case since the 64-bit
6420 relocation format is non-standard. */
6421 if (ABI_64_P (output_bfd))
6423 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
6424 (output_bfd, &outrel,
6426 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
6429 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
6430 (((Elf32_External_Rel *)
6432 + sreloc->reloc_count));
6434 /* Record the index of the first relocation referencing H. This
6435 information is later emitted in the .msym section. */
6437 && (h->min_dyn_reloc_index == 0
6438 || sreloc->reloc_count < h->min_dyn_reloc_index))
6439 h->min_dyn_reloc_index = sreloc->reloc_count;
6441 /* We've now added another relocation. */
6442 ++sreloc->reloc_count;
6444 /* Make sure the output section is writable. The dynamic linker
6445 will be writing to it. */
6446 elf_section_data (input_section->output_section)->this_hdr.sh_flags
6449 /* On IRIX5, make an entry of compact relocation info. */
6450 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
6452 asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
6457 Elf32_crinfo cptrel;
6459 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
6460 cptrel.vaddr = (rel->r_offset
6461 + input_section->output_section->vma
6462 + input_section->output_offset);
6463 if (r_type == R_MIPS_REL32)
6464 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
6466 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
6467 mips_elf_set_cr_dist2to (cptrel, 0);
6468 cptrel.konst = *addendp;
6470 cr = (scpt->contents
6471 + sizeof (Elf32_External_compact_rel));
6472 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
6473 ((Elf32_External_crinfo *) cr
6474 + scpt->reloc_count));
6475 ++scpt->reloc_count;
6482 /* Calculate the value produced by the RELOCATION (which comes from
6483 the INPUT_BFD). The ADDEND is the addend to use for this
6484 RELOCATION; RELOCATION->R_ADDEND is ignored.
6486 The result of the relocation calculation is stored in VALUEP.
6487 REQUIRE_JALXP indicates whether or not the opcode used with this
6488 relocation must be JALX.
6490 This function returns bfd_reloc_continue if the caller need take no
6491 further action regarding this relocation, bfd_reloc_notsupported if
6492 something goes dramatically wrong, bfd_reloc_overflow if an
6493 overflow occurs, and bfd_reloc_ok to indicate success. */
6495 static bfd_reloc_status_type
6496 mips_elf_calculate_relocation (abfd,
6510 asection *input_section;
6511 struct bfd_link_info *info;
6512 const Elf_Internal_Rela *relocation;
6514 reloc_howto_type *howto;
6515 Elf_Internal_Sym *local_syms;
6516 asection **local_sections;
6519 boolean *require_jalxp;
6521 /* The eventual value we will return. */
6523 /* The address of the symbol against which the relocation is
6526 /* The final GP value to be used for the relocatable, executable, or
6527 shared object file being produced. */
6528 bfd_vma gp = (bfd_vma) - 1;
6529 /* The place (section offset or address) of the storage unit being
6532 /* The value of GP used to create the relocatable object. */
6533 bfd_vma gp0 = (bfd_vma) - 1;
6534 /* The offset into the global offset table at which the address of
6535 the relocation entry symbol, adjusted by the addend, resides
6536 during execution. */
6537 bfd_vma g = (bfd_vma) - 1;
6538 /* The section in which the symbol referenced by the relocation is
6540 asection *sec = NULL;
6541 struct mips_elf_link_hash_entry *h = NULL;
6542 /* True if the symbol referred to by this relocation is a local
6545 /* True if the symbol referred to by this relocation is "_gp_disp". */
6546 boolean gp_disp_p = false;
6547 Elf_Internal_Shdr *symtab_hdr;
6549 unsigned long r_symndx;
6551 /* True if overflow occurred during the calculation of the
6552 relocation value. */
6553 boolean overflowed_p;
6554 /* True if this relocation refers to a MIPS16 function. */
6555 boolean target_is_16_bit_code_p = false;
6557 /* Parse the relocation. */
6558 r_symndx = ELF32_R_SYM (relocation->r_info);
6559 r_type = ELF32_R_TYPE (relocation->r_info);
6560 p = (input_section->output_section->vma
6561 + input_section->output_offset
6562 + relocation->r_offset);
6564 /* Assume that there will be no overflow. */
6565 overflowed_p = false;
6567 /* Figure out whether or not the symbol is local, and get the offset
6568 used in the array of hash table entries. */
6569 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6570 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
6571 local_sections, false);
6572 if (! elf_bad_symtab (input_bfd))
6573 extsymoff = symtab_hdr->sh_info;
6576 /* The symbol table does not follow the rule that local symbols
6577 must come before globals. */
6581 /* Figure out the value of the symbol. */
6584 Elf_Internal_Sym *sym;
6586 sym = local_syms + r_symndx;
6587 sec = local_sections[r_symndx];
6589 symbol = sec->output_section->vma + sec->output_offset;
6590 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
6591 symbol += sym->st_value;
6593 /* MIPS16 text labels should be treated as odd. */
6594 if (sym->st_other == STO_MIPS16)
6597 /* Record the name of this symbol, for our caller. */
6598 *namep = bfd_elf_string_from_elf_section (input_bfd,
6599 symtab_hdr->sh_link,
6602 *namep = bfd_section_name (input_bfd, sec);
6604 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
6608 /* For global symbols we look up the symbol in the hash-table. */
6609 h = ((struct mips_elf_link_hash_entry *)
6610 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
6611 /* Find the real hash-table entry for this symbol. */
6612 while (h->root.root.type == bfd_link_hash_indirect
6613 || h->root.root.type == bfd_link_hash_warning)
6614 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
6616 /* Record the name of this symbol, for our caller. */
6617 *namep = h->root.root.root.string;
6619 /* See if this is the special _gp_disp symbol. Note that such a
6620 symbol must always be a global symbol. */
6621 if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
6623 /* Relocations against _gp_disp are permitted only with
6624 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
6625 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
6626 return bfd_reloc_notsupported;
6630 /* If this symbol is defined, calculate its address. Note that
6631 _gp_disp is a magic symbol, always implicitly defined by the
6632 linker, so it's inappropriate to check to see whether or not
6634 else if ((h->root.root.type == bfd_link_hash_defined
6635 || h->root.root.type == bfd_link_hash_defweak)
6636 && h->root.root.u.def.section)
6638 sec = h->root.root.u.def.section;
6639 if (sec->output_section)
6640 symbol = (h->root.root.u.def.value
6641 + sec->output_section->vma
6642 + sec->output_offset);
6644 symbol = h->root.root.u.def.value;
6646 else if (h->root.root.type == bfd_link_hash_undefweak)
6647 /* We allow relocations against undefined weak symbols, giving
6648 it the value zero, so that you can undefined weak functions
6649 and check to see if they exist by looking at their
6652 else if (info->shared
6653 && (!info->symbolic || info->allow_shlib_undefined)
6654 && !info->no_undefined
6655 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
6657 else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
6658 strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
6660 /* If this is a dynamic link, we should have created a
6661 _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
6662 in in mips_elf_create_dynamic_sections.
6663 Otherwise, we should define the symbol with a value of 0.
6664 FIXME: It should probably get into the symbol table
6666 BFD_ASSERT (! info->shared);
6667 BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
6672 if (! ((*info->callbacks->undefined_symbol)
6673 (info, h->root.root.root.string, input_bfd,
6674 input_section, relocation->r_offset,
6675 (!info->shared || info->no_undefined
6676 || ELF_ST_VISIBILITY (h->root.other)))))
6677 return bfd_reloc_undefined;
6681 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
6684 /* If this is a 32-bit call to a 16-bit function with a stub, we
6685 need to redirect the call to the stub, unless we're already *in*
6687 if (r_type != R_MIPS16_26 && !info->relocateable
6688 && ((h != NULL && h->fn_stub != NULL)
6689 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
6690 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
6691 && !mips_elf_stub_section_p (input_bfd, input_section))
6693 /* This is a 32-bit call to a 16-bit function. We should
6694 have already noticed that we were going to need the
6697 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
6700 BFD_ASSERT (h->need_fn_stub);
6704 symbol = sec->output_section->vma + sec->output_offset;
6706 /* If this is a 16-bit call to a 32-bit function with a stub, we
6707 need to redirect the call to the stub. */
6708 else if (r_type == R_MIPS16_26 && !info->relocateable
6710 && (h->call_stub != NULL || h->call_fp_stub != NULL)
6711 && !target_is_16_bit_code_p)
6713 /* If both call_stub and call_fp_stub are defined, we can figure
6714 out which one to use by seeing which one appears in the input
6716 if (h->call_stub != NULL && h->call_fp_stub != NULL)
6721 for (o = input_bfd->sections; o != NULL; o = o->next)
6723 if (strncmp (bfd_get_section_name (input_bfd, o),
6724 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
6726 sec = h->call_fp_stub;
6733 else if (h->call_stub != NULL)
6736 sec = h->call_fp_stub;
6738 BFD_ASSERT (sec->_raw_size > 0);
6739 symbol = sec->output_section->vma + sec->output_offset;
6742 /* Calls from 16-bit code to 32-bit code and vice versa require the
6743 special jalx instruction. */
6744 *require_jalxp = (!info->relocateable
6745 && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p)
6746 || ((r_type == R_MIPS_26) && target_is_16_bit_code_p)));
6748 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
6749 local_sections, true);
6751 /* If we haven't already determined the GOT offset, or the GP value,
6752 and we're going to need it, get it now. */
6757 case R_MIPS_GOT_DISP:
6758 case R_MIPS_GOT_HI16:
6759 case R_MIPS_CALL_HI16:
6760 case R_MIPS_GOT_LO16:
6761 case R_MIPS_CALL_LO16:
6762 /* Find the index into the GOT where this value is located. */
6765 BFD_ASSERT (addend == 0);
6766 g = mips_elf_global_got_index
6767 (elf_hash_table (info)->dynobj,
6768 (struct elf_link_hash_entry *) h);
6769 if (! elf_hash_table(info)->dynamic_sections_created
6771 && (info->symbolic || h->root.dynindx == -1)
6772 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
6774 /* This is a static link or a -Bsymbolic link. The
6775 symbol is defined locally, or was forced to be local.
6776 We must initialize this entry in the GOT. */
6777 asection *sgot = mips_elf_got_section(elf_hash_table
6779 MIPS_ELF_PUT_WORD (elf_hash_table (info)->dynobj,
6780 symbol + addend, sgot->contents + g);
6783 else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
6784 /* There's no need to create a local GOT entry here; the
6785 calculation for a local GOT16 entry does not involve G. */
6789 g = mips_elf_local_got_index (abfd, info, symbol + addend);
6790 if (g == (bfd_vma) -1)
6794 /* Convert GOT indices to actual offsets. */
6795 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6801 case R_MIPS16_GPREL:
6802 case R_MIPS_GPREL16:
6803 case R_MIPS_GPREL32:
6804 case R_MIPS_LITERAL:
6805 gp0 = _bfd_get_gp_value (input_bfd);
6806 gp = _bfd_get_gp_value (abfd);
6813 /* Figure out what kind of relocation is being performed. */
6817 return bfd_reloc_continue;
6820 value = symbol + mips_elf_sign_extend (addend, 16);
6821 overflowed_p = mips_elf_overflow_p (value, 16);
6828 || (elf_hash_table (info)->dynamic_sections_created
6830 && ((h->root.elf_link_hash_flags
6831 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
6832 && ((h->root.elf_link_hash_flags
6833 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
6835 && (input_section->flags & SEC_ALLOC) != 0)
6837 /* If we're creating a shared library, or this relocation is
6838 against a symbol in a shared library, then we can't know
6839 where the symbol will end up. So, we create a relocation
6840 record in the output, and leave the job up to the dynamic
6843 if (!mips_elf_create_dynamic_relocation (abfd,
6855 if (r_type != R_MIPS_REL32)
6856 value = symbol + addend;
6860 value &= howto->dst_mask;
6865 case R_MIPS_GNU_REL_LO16:
6866 value = symbol + addend - p;
6867 value &= howto->dst_mask;
6870 case R_MIPS_GNU_REL16_S2:
6871 value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
6872 overflowed_p = mips_elf_overflow_p (value, 18);
6873 value = (value >> 2) & howto->dst_mask;
6876 case R_MIPS_GNU_REL_HI16:
6877 /* Instead of subtracting 'p' here, we should be subtracting the
6878 equivalent value for the LO part of the reloc, since the value
6879 here is relative to that address. Because that's not easy to do,
6880 we adjust 'addend' in _bfd_mips_elf_relocate_section(). See also
6881 the comment there for more information. */
6882 value = mips_elf_high (addend + symbol - p);
6883 value &= howto->dst_mask;
6887 /* The calculation for R_MIPS16_26 is just the same as for an
6888 R_MIPS_26. It's only the storage of the relocated field into
6889 the output file that's different. That's handled in
6890 mips_elf_perform_relocation. So, we just fall through to the
6891 R_MIPS_26 case here. */
6894 value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
6896 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
6897 value &= howto->dst_mask;
6903 value = mips_elf_high (addend + symbol);
6904 value &= howto->dst_mask;
6908 value = mips_elf_high (addend + gp - p);
6909 overflowed_p = mips_elf_overflow_p (value, 16);
6915 value = (symbol + addend) & howto->dst_mask;
6918 value = addend + gp - p + 4;
6919 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
6920 for overflow. But, on, say, Irix 5, relocations against
6921 _gp_disp are normally generated from the .cpload
6922 pseudo-op. It generates code that normally looks like
6925 lui $gp,%hi(_gp_disp)
6926 addiu $gp,$gp,%lo(_gp_disp)
6929 Here $t9 holds the address of the function being called,
6930 as required by the MIPS ELF ABI. The R_MIPS_LO16
6931 relocation can easily overflow in this situation, but the
6932 R_MIPS_HI16 relocation will handle the overflow.
6933 Therefore, we consider this a bug in the MIPS ABI, and do
6934 not check for overflow here. */
6938 case R_MIPS_LITERAL:
6939 /* Because we don't merge literal sections, we can handle this
6940 just like R_MIPS_GPREL16. In the long run, we should merge
6941 shared literals, and then we will need to additional work
6946 case R_MIPS16_GPREL:
6947 /* The R_MIPS16_GPREL performs the same calculation as
6948 R_MIPS_GPREL16, but stores the relocated bits in a different
6949 order. We don't need to do anything special here; the
6950 differences are handled in mips_elf_perform_relocation. */
6951 case R_MIPS_GPREL16:
6953 value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
6955 value = mips_elf_sign_extend (addend, 16) + symbol - gp;
6956 overflowed_p = mips_elf_overflow_p (value, 16);
6965 /* The special case is when the symbol is forced to be local. We
6966 need the full address in the GOT since no R_MIPS_LO16 relocation
6968 forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
6969 local_sections, false);
6970 value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
6971 if (value == (bfd_vma) -1)
6974 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6977 overflowed_p = mips_elf_overflow_p (value, 16);
6983 case R_MIPS_GOT_DISP:
6985 overflowed_p = mips_elf_overflow_p (value, 16);
6988 case R_MIPS_GPREL32:
6989 value = (addend + symbol + gp0 - gp) & howto->dst_mask;
6993 value = mips_elf_sign_extend (addend, 16) + symbol - p;
6994 overflowed_p = mips_elf_overflow_p (value, 16);
6995 value = (bfd_vma) ((bfd_signed_vma) value / 4);
6998 case R_MIPS_GOT_HI16:
6999 case R_MIPS_CALL_HI16:
7000 /* We're allowed to handle these two relocations identically.
7001 The dynamic linker is allowed to handle the CALL relocations
7002 differently by creating a lazy evaluation stub. */
7004 value = mips_elf_high (value);
7005 value &= howto->dst_mask;
7008 case R_MIPS_GOT_LO16:
7009 case R_MIPS_CALL_LO16:
7010 value = g & howto->dst_mask;
7013 case R_MIPS_GOT_PAGE:
7014 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
7015 if (value == (bfd_vma) -1)
7017 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
7020 overflowed_p = mips_elf_overflow_p (value, 16);
7023 case R_MIPS_GOT_OFST:
7024 mips_elf_got_page (abfd, info, symbol + addend, &value);
7025 overflowed_p = mips_elf_overflow_p (value, 16);
7029 value = symbol - addend;
7030 value &= howto->dst_mask;
7034 value = mips_elf_higher (addend + symbol);
7035 value &= howto->dst_mask;
7038 case R_MIPS_HIGHEST:
7039 value = mips_elf_highest (addend + symbol);
7040 value &= howto->dst_mask;
7043 case R_MIPS_SCN_DISP:
7044 value = symbol + addend - sec->output_offset;
7045 value &= howto->dst_mask;
7050 /* Both of these may be ignored. R_MIPS_JALR is an optimization
7051 hint; we could improve performance by honoring that hint. */
7052 return bfd_reloc_continue;
7054 case R_MIPS_GNU_VTINHERIT:
7055 case R_MIPS_GNU_VTENTRY:
7056 /* We don't do anything with these at present. */
7057 return bfd_reloc_continue;
7060 /* An unrecognized relocation type. */
7061 return bfd_reloc_notsupported;
7064 /* Store the VALUE for our caller. */
7066 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
7069 /* Obtain the field relocated by RELOCATION. */
7072 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
7073 reloc_howto_type *howto;
7074 const Elf_Internal_Rela *relocation;
7079 bfd_byte *location = contents + relocation->r_offset;
7081 /* Obtain the bytes. */
7082 x = bfd_get (((bfd_vma)(8 * bfd_get_reloc_size (howto))), input_bfd, location);
7084 if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
7085 || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
7086 && bfd_little_endian (input_bfd))
7087 /* The two 16-bit words will be reversed on a little-endian
7088 system. See mips_elf_perform_relocation for more details. */
7089 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
7094 /* It has been determined that the result of the RELOCATION is the
7095 VALUE. Use HOWTO to place VALUE into the output file at the
7096 appropriate position. The SECTION is the section to which the
7097 relocation applies. If REQUIRE_JALX is true, then the opcode used
7098 for the relocation must be either JAL or JALX, and it is
7099 unconditionally converted to JALX.
7101 Returns false if anything goes wrong. */
7104 mips_elf_perform_relocation (info, howto, relocation, value,
7105 input_bfd, input_section,
7106 contents, require_jalx)
7107 struct bfd_link_info *info;
7108 reloc_howto_type *howto;
7109 const Elf_Internal_Rela *relocation;
7112 asection *input_section;
7114 boolean require_jalx;
7118 int r_type = ELF32_R_TYPE (relocation->r_info);
7120 /* Figure out where the relocation is occurring. */
7121 location = contents + relocation->r_offset;
7123 /* Obtain the current value. */
7124 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
7126 /* Clear the field we are setting. */
7127 x &= ~howto->dst_mask;
7129 /* If this is the R_MIPS16_26 relocation, we must store the
7130 value in a funny way. */
7131 if (r_type == R_MIPS16_26)
7133 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
7134 Most mips16 instructions are 16 bits, but these instructions
7137 The format of these instructions is:
7139 +--------------+--------------------------------+
7140 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
7141 +--------------+--------------------------------+
7143 +-----------------------------------------------+
7145 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
7146 Note that the immediate value in the first word is swapped.
7148 When producing a relocateable object file, R_MIPS16_26 is
7149 handled mostly like R_MIPS_26. In particular, the addend is
7150 stored as a straight 26-bit value in a 32-bit instruction.
7151 (gas makes life simpler for itself by never adjusting a
7152 R_MIPS16_26 reloc to be against a section, so the addend is
7153 always zero). However, the 32 bit instruction is stored as 2
7154 16-bit values, rather than a single 32-bit value. In a
7155 big-endian file, the result is the same; in a little-endian
7156 file, the two 16-bit halves of the 32 bit value are swapped.
7157 This is so that a disassembler can recognize the jal
7160 When doing a final link, R_MIPS16_26 is treated as a 32 bit
7161 instruction stored as two 16-bit values. The addend A is the
7162 contents of the targ26 field. The calculation is the same as
7163 R_MIPS_26. When storing the calculated value, reorder the
7164 immediate value as shown above, and don't forget to store the
7165 value as two 16-bit values.
7167 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
7171 +--------+----------------------+
7175 +--------+----------------------+
7178 +----------+------+-------------+
7182 +----------+--------------------+
7183 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
7184 ((sub1 << 16) | sub2)).
7186 When producing a relocateable object file, the calculation is
7187 (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
7188 When producing a fully linked file, the calculation is
7189 let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
7190 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
7192 if (!info->relocateable)
7193 /* Shuffle the bits according to the formula above. */
7194 value = (((value & 0x1f0000) << 5)
7195 | ((value & 0x3e00000) >> 5)
7196 | (value & 0xffff));
7198 else if (r_type == R_MIPS16_GPREL)
7200 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
7201 mode. A typical instruction will have a format like this:
7203 +--------------+--------------------------------+
7204 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
7205 +--------------+--------------------------------+
7206 ! Major ! rx ! ry ! Imm 4:0 !
7207 +--------------+--------------------------------+
7209 EXTEND is the five bit value 11110. Major is the instruction
7212 This is handled exactly like R_MIPS_GPREL16, except that the
7213 addend is retrieved and stored as shown in this diagram; that
7214 is, the Imm fields above replace the V-rel16 field.
7216 All we need to do here is shuffle the bits appropriately. As
7217 above, the two 16-bit halves must be swapped on a
7218 little-endian system. */
7219 value = (((value & 0x7e0) << 16)
7220 | ((value & 0xf800) << 5)
7224 /* Set the field. */
7225 x |= (value & howto->dst_mask);
7227 /* If required, turn JAL into JALX. */
7231 bfd_vma opcode = x >> 26;
7232 bfd_vma jalx_opcode;
7234 /* Check to see if the opcode is already JAL or JALX. */
7235 if (r_type == R_MIPS16_26)
7237 ok = ((opcode == 0x6) || (opcode == 0x7));
7242 ok = ((opcode == 0x3) || (opcode == 0x1d));
7246 /* If the opcode is not JAL or JALX, there's a problem. */
7249 (*_bfd_error_handler)
7250 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
7251 bfd_archive_filename (input_bfd),
7252 input_section->name,
7253 (unsigned long) relocation->r_offset);
7254 bfd_set_error (bfd_error_bad_value);
7258 /* Make this the JALX opcode. */
7259 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
7262 /* Swap the high- and low-order 16 bits on little-endian systems
7263 when doing a MIPS16 relocation. */
7264 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
7265 && bfd_little_endian (input_bfd))
7266 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
7268 /* Put the value into the output. */
7269 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
7273 /* Returns true if SECTION is a MIPS16 stub section. */
7276 mips_elf_stub_section_p (abfd, section)
7277 bfd *abfd ATTRIBUTE_UNUSED;
7280 const char *name = bfd_get_section_name (abfd, section);
7282 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
7283 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
7284 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
7287 /* Relocate a MIPS ELF section. */
7290 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
7291 contents, relocs, local_syms, local_sections)
7293 struct bfd_link_info *info;
7295 asection *input_section;
7297 Elf_Internal_Rela *relocs;
7298 Elf_Internal_Sym *local_syms;
7299 asection **local_sections;
7301 Elf_Internal_Rela *rel;
7302 const Elf_Internal_Rela *relend;
7304 boolean use_saved_addend_p = false;
7305 struct elf_backend_data *bed;
7307 bed = get_elf_backend_data (output_bfd);
7308 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
7309 for (rel = relocs; rel < relend; ++rel)
7313 reloc_howto_type *howto;
7314 boolean require_jalx;
7315 /* True if the relocation is a RELA relocation, rather than a
7317 boolean rela_relocation_p = true;
7318 unsigned int r_type = ELF32_R_TYPE (rel->r_info);
7319 const char * msg = (const char *) NULL;
7321 /* Find the relocation howto for this relocation. */
7322 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7324 /* Some 32-bit code uses R_MIPS_64. In particular, people use
7325 64-bit code, but make sure all their addresses are in the
7326 lowermost or uppermost 32-bit section of the 64-bit address
7327 space. Thus, when they use an R_MIPS_64 they mean what is
7328 usually meant by R_MIPS_32, with the exception that the
7329 stored value is sign-extended to 64 bits. */
7330 howto = elf_mips_howto_table_rel + R_MIPS_32;
7332 /* On big-endian systems, we need to lie about the position
7334 if (bfd_big_endian (input_bfd))
7338 howto = mips_rtype_to_howto (r_type);
7340 if (!use_saved_addend_p)
7342 Elf_Internal_Shdr *rel_hdr;
7344 /* If these relocations were originally of the REL variety,
7345 we must pull the addend out of the field that will be
7346 relocated. Otherwise, we simply use the contents of the
7347 RELA relocation. To determine which flavor or relocation
7348 this is, we depend on the fact that the INPUT_SECTION's
7349 REL_HDR is read before its REL_HDR2. */
7350 rel_hdr = &elf_section_data (input_section)->rel_hdr;
7351 if ((size_t) (rel - relocs)
7352 >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
7353 rel_hdr = elf_section_data (input_section)->rel_hdr2;
7354 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
7356 /* Note that this is a REL relocation. */
7357 rela_relocation_p = false;
7359 /* Get the addend, which is stored in the input file. */
7360 addend = mips_elf_obtain_contents (howto,
7364 addend &= howto->src_mask;
7366 /* For some kinds of relocations, the ADDEND is a
7367 combination of the addend stored in two different
7369 if (r_type == R_MIPS_HI16
7370 || r_type == R_MIPS_GNU_REL_HI16
7371 || (r_type == R_MIPS_GOT16
7372 && mips_elf_local_relocation_p (input_bfd, rel,
7373 local_sections, false)))
7376 const Elf_Internal_Rela *lo16_relocation;
7377 reloc_howto_type *lo16_howto;
7380 /* The combined value is the sum of the HI16 addend,
7381 left-shifted by sixteen bits, and the LO16
7382 addend, sign extended. (Usually, the code does
7383 a `lui' of the HI16 value, and then an `addiu' of
7386 Scan ahead to find a matching LO16 relocation. */
7387 if (r_type == R_MIPS_GNU_REL_HI16)
7388 lo = R_MIPS_GNU_REL_LO16;
7392 = mips_elf_next_relocation (lo, rel, relend);
7393 if (lo16_relocation == NULL)
7396 /* Obtain the addend kept there. */
7397 lo16_howto = mips_rtype_to_howto (lo);
7398 l = mips_elf_obtain_contents (lo16_howto,
7400 input_bfd, contents);
7401 l &= lo16_howto->src_mask;
7402 l = mips_elf_sign_extend (l, 16);
7406 /* Compute the combined addend. */
7409 /* If PC-relative, subtract the difference between the
7410 address of the LO part of the reloc and the address of
7411 the HI part. The relocation is relative to the LO
7412 part, but mips_elf_calculate_relocation() doesn't know
7413 it address or the difference from the HI part, so
7414 we subtract that difference here. See also the
7415 comment in mips_elf_calculate_relocation(). */
7416 if (r_type == R_MIPS_GNU_REL_HI16)
7417 addend -= (lo16_relocation->r_offset - rel->r_offset);
7419 else if (r_type == R_MIPS16_GPREL)
7421 /* The addend is scrambled in the object file. See
7422 mips_elf_perform_relocation for details on the
7424 addend = (((addend & 0x1f0000) >> 5)
7425 | ((addend & 0x7e00000) >> 16)
7430 addend = rel->r_addend;
7433 if (info->relocateable)
7435 Elf_Internal_Sym *sym;
7436 unsigned long r_symndx;
7438 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)
7439 && bfd_big_endian (input_bfd))
7442 /* Since we're just relocating, all we need to do is copy
7443 the relocations back out to the object file, unless
7444 they're against a section symbol, in which case we need
7445 to adjust by the section offset, or unless they're GP
7446 relative in which case we need to adjust by the amount
7447 that we're adjusting GP in this relocateable object. */
7449 if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections,
7451 /* There's nothing to do for non-local relocations. */
7454 if (r_type == R_MIPS16_GPREL
7455 || r_type == R_MIPS_GPREL16
7456 || r_type == R_MIPS_GPREL32
7457 || r_type == R_MIPS_LITERAL)
7458 addend -= (_bfd_get_gp_value (output_bfd)
7459 - _bfd_get_gp_value (input_bfd));
7460 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
7461 || r_type == R_MIPS_GNU_REL16_S2)
7462 /* The addend is stored without its two least
7463 significant bits (which are always zero.) In a
7464 non-relocateable link, calculate_relocation will do
7465 this shift; here, we must do it ourselves. */
7468 r_symndx = ELF32_R_SYM (rel->r_info);
7469 sym = local_syms + r_symndx;
7470 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7471 /* Adjust the addend appropriately. */
7472 addend += local_sections[r_symndx]->output_offset;
7474 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
7475 then we only want to write out the high-order 16 bits.
7476 The subsequent R_MIPS_LO16 will handle the low-order bits. */
7477 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
7478 || r_type == R_MIPS_GNU_REL_HI16)
7479 addend = mips_elf_high (addend);
7480 /* If the relocation is for an R_MIPS_26 relocation, then
7481 the two low-order bits are not stored in the object file;
7482 they are implicitly zero. */
7483 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
7484 || r_type == R_MIPS_GNU_REL16_S2)
7487 if (rela_relocation_p)
7488 /* If this is a RELA relocation, just update the addend.
7489 We have to cast away constness for REL. */
7490 rel->r_addend = addend;
7493 /* Otherwise, we have to write the value back out. Note
7494 that we use the source mask, rather than the
7495 destination mask because the place to which we are
7496 writing will be source of the addend in the final
7498 addend &= howto->src_mask;
7500 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7501 /* See the comment above about using R_MIPS_64 in the 32-bit
7502 ABI. Here, we need to update the addend. It would be
7503 possible to get away with just using the R_MIPS_32 reloc
7504 but for endianness. */
7510 if (addend & ((bfd_vma) 1 << 31))
7512 sign_bits = ((bfd_vma) 1 << 32) - 1;
7519 /* If we don't know that we have a 64-bit type,
7520 do two separate stores. */
7521 if (bfd_big_endian (input_bfd))
7523 /* Store the sign-bits (which are most significant)
7525 low_bits = sign_bits;
7531 high_bits = sign_bits;
7533 bfd_put_32 (input_bfd, low_bits,
7534 contents + rel->r_offset);
7535 bfd_put_32 (input_bfd, high_bits,
7536 contents + rel->r_offset + 4);
7540 if (!mips_elf_perform_relocation (info, howto, rel, addend,
7541 input_bfd, input_section,
7546 /* Go on to the next relocation. */
7550 /* In the N32 and 64-bit ABIs there may be multiple consecutive
7551 relocations for the same offset. In that case we are
7552 supposed to treat the output of each relocation as the addend
7554 if (rel + 1 < relend
7555 && rel->r_offset == rel[1].r_offset
7556 && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
7557 use_saved_addend_p = true;
7559 use_saved_addend_p = false;
7561 /* Figure out what value we are supposed to relocate. */
7562 switch (mips_elf_calculate_relocation (output_bfd,
7575 case bfd_reloc_continue:
7576 /* There's nothing to do. */
7579 case bfd_reloc_undefined:
7580 /* mips_elf_calculate_relocation already called the
7581 undefined_symbol callback. There's no real point in
7582 trying to perform the relocation at this point, so we
7583 just skip ahead to the next relocation. */
7586 case bfd_reloc_notsupported:
7587 msg = _("internal error: unsupported relocation error");
7588 info->callbacks->warning
7589 (info, msg, name, input_bfd, input_section, rel->r_offset);
7592 case bfd_reloc_overflow:
7593 if (use_saved_addend_p)
7594 /* Ignore overflow until we reach the last relocation for
7595 a given location. */
7599 BFD_ASSERT (name != NULL);
7600 if (! ((*info->callbacks->reloc_overflow)
7601 (info, name, howto->name, (bfd_vma) 0,
7602 input_bfd, input_section, rel->r_offset)))
7615 /* If we've got another relocation for the address, keep going
7616 until we reach the last one. */
7617 if (use_saved_addend_p)
7623 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7624 /* See the comment above about using R_MIPS_64 in the 32-bit
7625 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
7626 that calculated the right value. Now, however, we
7627 sign-extend the 32-bit result to 64-bits, and store it as a
7628 64-bit value. We are especially generous here in that we
7629 go to extreme lengths to support this usage on systems with
7630 only a 32-bit VMA. */
7636 if (value & ((bfd_vma) 1 << 31))
7638 sign_bits = ((bfd_vma) 1 << 32) - 1;
7645 /* If we don't know that we have a 64-bit type,
7646 do two separate stores. */
7647 if (bfd_big_endian (input_bfd))
7649 /* Undo what we did above. */
7651 /* Store the sign-bits (which are most significant)
7653 low_bits = sign_bits;
7659 high_bits = sign_bits;
7661 bfd_put_32 (input_bfd, low_bits,
7662 contents + rel->r_offset);
7663 bfd_put_32 (input_bfd, high_bits,
7664 contents + rel->r_offset + 4);
7668 /* Actually perform the relocation. */
7669 if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
7670 input_section, contents,
7678 /* This hook function is called before the linker writes out a global
7679 symbol. We mark symbols as small common if appropriate. This is
7680 also where we undo the increment of the value for a mips16 symbol. */
7683 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
7684 bfd *abfd ATTRIBUTE_UNUSED;
7685 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7686 const char *name ATTRIBUTE_UNUSED;
7687 Elf_Internal_Sym *sym;
7688 asection *input_sec;
7690 /* If we see a common symbol, which implies a relocatable link, then
7691 if a symbol was small common in an input file, mark it as small
7692 common in the output file. */
7693 if (sym->st_shndx == SHN_COMMON
7694 && strcmp (input_sec->name, ".scommon") == 0)
7695 sym->st_shndx = SHN_MIPS_SCOMMON;
7697 if (sym->st_other == STO_MIPS16
7698 && (sym->st_value & 1) != 0)
7704 /* Functions for the dynamic linker. */
7706 /* The name of the dynamic interpreter. This is put in the .interp
7709 #define ELF_DYNAMIC_INTERPRETER(abfd) \
7710 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
7711 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
7712 : "/usr/lib/libc.so.1")
7714 /* Create dynamic sections when linking against a dynamic object. */
7717 _bfd_mips_elf_create_dynamic_sections (abfd, info)
7719 struct bfd_link_info *info;
7721 struct elf_link_hash_entry *h;
7723 register asection *s;
7724 const char * const *namep;
7726 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7727 | SEC_LINKER_CREATED | SEC_READONLY);
7729 /* Mips ABI requests the .dynamic section to be read only. */
7730 s = bfd_get_section_by_name (abfd, ".dynamic");
7733 if (! bfd_set_section_flags (abfd, s, flags))
7737 /* We need to create .got section. */
7738 if (! mips_elf_create_got_section (abfd, info))
7741 /* Create the .msym section on IRIX6. It is used by the dynamic
7742 linker to speed up dynamic relocations, and to avoid computing
7743 the ELF hash for symbols. */
7744 if (IRIX_COMPAT (abfd) == ict_irix6
7745 && !mips_elf_create_msym_section (abfd))
7748 /* Create .stub section. */
7749 if (bfd_get_section_by_name (abfd,
7750 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
7752 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
7754 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
7755 || ! bfd_set_section_alignment (abfd, s,
7756 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7760 if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
7762 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
7764 s = bfd_make_section (abfd, ".rld_map");
7766 || ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY)
7767 || ! bfd_set_section_alignment (abfd, s,
7768 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7772 /* On IRIX5, we adjust add some additional symbols and change the
7773 alignments of several sections. There is no ABI documentation
7774 indicating that this is necessary on IRIX6, nor any evidence that
7775 the linker takes such action. */
7776 if (IRIX_COMPAT (abfd) == ict_irix5)
7778 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
7781 if (! (_bfd_generic_link_add_one_symbol
7782 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
7783 (bfd_vma) 0, (const char *) NULL, false,
7784 get_elf_backend_data (abfd)->collect,
7785 (struct bfd_link_hash_entry **) &h)))
7787 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7788 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7789 h->type = STT_SECTION;
7791 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7795 /* We need to create a .compact_rel section. */
7796 if (SGI_COMPAT (abfd))
7798 if (!mips_elf_create_compact_rel_section (abfd, info))
7802 /* Change aligments of some sections. */
7803 s = bfd_get_section_by_name (abfd, ".hash");
7805 bfd_set_section_alignment (abfd, s, 4);
7806 s = bfd_get_section_by_name (abfd, ".dynsym");
7808 bfd_set_section_alignment (abfd, s, 4);
7809 s = bfd_get_section_by_name (abfd, ".dynstr");
7811 bfd_set_section_alignment (abfd, s, 4);
7812 s = bfd_get_section_by_name (abfd, ".reginfo");
7814 bfd_set_section_alignment (abfd, s, 4);
7815 s = bfd_get_section_by_name (abfd, ".dynamic");
7817 bfd_set_section_alignment (abfd, s, 4);
7823 if (SGI_COMPAT (abfd))
7825 if (!(_bfd_generic_link_add_one_symbol
7826 (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
7827 (bfd_vma) 0, (const char *) NULL, false,
7828 get_elf_backend_data (abfd)->collect,
7829 (struct bfd_link_hash_entry **) &h)))
7834 /* For normal mips it is _DYNAMIC_LINKING. */
7835 if (!(_bfd_generic_link_add_one_symbol
7836 (info, abfd, "_DYNAMIC_LINKING", BSF_GLOBAL,
7837 bfd_abs_section_ptr, (bfd_vma) 0, (const char *) NULL, false,
7838 get_elf_backend_data (abfd)->collect,
7839 (struct bfd_link_hash_entry **) &h)))
7842 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7843 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7844 h->type = STT_SECTION;
7846 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7849 if (! mips_elf_hash_table (info)->use_rld_obj_head)
7851 /* __rld_map is a four byte word located in the .data section
7852 and is filled in by the rtld to contain a pointer to
7853 the _r_debug structure. Its symbol value will be set in
7854 mips_elf_finish_dynamic_symbol. */
7855 s = bfd_get_section_by_name (abfd, ".rld_map");
7856 BFD_ASSERT (s != NULL);
7859 if (SGI_COMPAT (abfd))
7861 if (!(_bfd_generic_link_add_one_symbol
7862 (info, abfd, "__rld_map", BSF_GLOBAL, s,
7863 (bfd_vma) 0, (const char *) NULL, false,
7864 get_elf_backend_data (abfd)->collect,
7865 (struct bfd_link_hash_entry **) &h)))
7870 /* For normal mips the symbol is __RLD_MAP. */
7871 if (!(_bfd_generic_link_add_one_symbol
7872 (info, abfd, "__RLD_MAP", BSF_GLOBAL, s,
7873 (bfd_vma) 0, (const char *) NULL, false,
7874 get_elf_backend_data (abfd)->collect,
7875 (struct bfd_link_hash_entry **) &h)))
7878 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7879 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7880 h->type = STT_OBJECT;
7882 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7890 /* Create the .compact_rel section. */
7893 mips_elf_create_compact_rel_section (abfd, info)
7895 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7898 register asection *s;
7900 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
7902 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
7905 s = bfd_make_section (abfd, ".compact_rel");
7907 || ! bfd_set_section_flags (abfd, s, flags)
7908 || ! bfd_set_section_alignment (abfd, s,
7909 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7912 s->_raw_size = sizeof (Elf32_External_compact_rel);
7918 /* Create the .got section to hold the global offset table. */
7921 mips_elf_create_got_section (abfd, info)
7923 struct bfd_link_info *info;
7926 register asection *s;
7927 struct elf_link_hash_entry *h;
7928 struct mips_got_info *g;
7931 /* This function may be called more than once. */
7932 if (mips_elf_got_section (abfd))
7935 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7936 | SEC_LINKER_CREATED);
7938 s = bfd_make_section (abfd, ".got");
7940 || ! bfd_set_section_flags (abfd, s, flags)
7941 || ! bfd_set_section_alignment (abfd, s, 4))
7944 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
7945 linker script because we don't want to define the symbol if we
7946 are not creating a global offset table. */
7948 if (! (_bfd_generic_link_add_one_symbol
7949 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
7950 (bfd_vma) 0, (const char *) NULL, false,
7951 get_elf_backend_data (abfd)->collect,
7952 (struct bfd_link_hash_entry **) &h)))
7954 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7955 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7956 h->type = STT_OBJECT;
7959 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
7962 /* The first several global offset table entries are reserved. */
7963 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
7965 amt = sizeof (struct mips_got_info);
7966 g = (struct mips_got_info *) bfd_alloc (abfd, amt);
7969 g->global_gotsym = NULL;
7970 g->local_gotno = MIPS_RESERVED_GOTNO;
7971 g->assigned_gotno = MIPS_RESERVED_GOTNO;
7972 if (elf_section_data (s) == NULL)
7974 amt = sizeof (struct bfd_elf_section_data);
7975 s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
7976 if (elf_section_data (s) == NULL)
7979 elf_section_data (s)->tdata = (PTR) g;
7980 elf_section_data (s)->this_hdr.sh_flags
7981 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
7986 /* Returns the .msym section for ABFD, creating it if it does not
7987 already exist. Returns NULL to indicate error. */
7990 mips_elf_create_msym_section (abfd)
7995 s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
7998 s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
8000 || !bfd_set_section_flags (abfd, s,
8004 | SEC_LINKER_CREATED
8006 || !bfd_set_section_alignment (abfd, s,
8007 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
8014 /* Add room for N relocations to the .rel.dyn section in ABFD. */
8017 mips_elf_allocate_dynamic_relocations (abfd, n)
8023 s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
8024 BFD_ASSERT (s != NULL);
8026 if (s->_raw_size == 0)
8028 /* Make room for a null element. */
8029 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
8032 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
8035 /* Look through the relocs for a section during the first phase, and
8036 allocate space in the global offset table. */
8039 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
8041 struct bfd_link_info *info;
8043 const Elf_Internal_Rela *relocs;
8047 Elf_Internal_Shdr *symtab_hdr;
8048 struct elf_link_hash_entry **sym_hashes;
8049 struct mips_got_info *g;
8051 const Elf_Internal_Rela *rel;
8052 const Elf_Internal_Rela *rel_end;
8055 struct elf_backend_data *bed;
8057 if (info->relocateable)
8060 dynobj = elf_hash_table (info)->dynobj;
8061 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8062 sym_hashes = elf_sym_hashes (abfd);
8063 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
8065 /* Check for the mips16 stub sections. */
8067 name = bfd_get_section_name (abfd, sec);
8068 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
8070 unsigned long r_symndx;
8072 /* Look at the relocation information to figure out which symbol
8075 r_symndx = ELF32_R_SYM (relocs->r_info);
8077 if (r_symndx < extsymoff
8078 || sym_hashes[r_symndx - extsymoff] == NULL)
8082 /* This stub is for a local symbol. This stub will only be
8083 needed if there is some relocation in this BFD, other
8084 than a 16 bit function call, which refers to this symbol. */
8085 for (o = abfd->sections; o != NULL; o = o->next)
8087 Elf_Internal_Rela *sec_relocs;
8088 const Elf_Internal_Rela *r, *rend;
8090 /* We can ignore stub sections when looking for relocs. */
8091 if ((o->flags & SEC_RELOC) == 0
8092 || o->reloc_count == 0
8093 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
8094 sizeof FN_STUB - 1) == 0
8095 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
8096 sizeof CALL_STUB - 1) == 0
8097 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
8098 sizeof CALL_FP_STUB - 1) == 0)
8101 sec_relocs = (_bfd_elf32_link_read_relocs
8102 (abfd, o, (PTR) NULL,
8103 (Elf_Internal_Rela *) NULL,
8104 info->keep_memory));
8105 if (sec_relocs == NULL)
8108 rend = sec_relocs + o->reloc_count;
8109 for (r = sec_relocs; r < rend; r++)
8110 if (ELF32_R_SYM (r->r_info) == r_symndx
8111 && ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
8114 if (! info->keep_memory)
8123 /* There is no non-call reloc for this stub, so we do
8124 not need it. Since this function is called before
8125 the linker maps input sections to output sections, we
8126 can easily discard it by setting the SEC_EXCLUDE
8128 sec->flags |= SEC_EXCLUDE;
8132 /* Record this stub in an array of local symbol stubs for
8134 if (elf_tdata (abfd)->local_stubs == NULL)
8136 unsigned long symcount;
8140 if (elf_bad_symtab (abfd))
8141 symcount = NUM_SHDR_ENTRIES (symtab_hdr);
8143 symcount = symtab_hdr->sh_info;
8144 amt = symcount * sizeof (asection *);
8145 n = (asection **) bfd_zalloc (abfd, amt);
8148 elf_tdata (abfd)->local_stubs = n;
8151 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
8153 /* We don't need to set mips16_stubs_seen in this case.
8154 That flag is used to see whether we need to look through
8155 the global symbol table for stubs. We don't need to set
8156 it here, because we just have a local stub. */
8160 struct mips_elf_link_hash_entry *h;
8162 h = ((struct mips_elf_link_hash_entry *)
8163 sym_hashes[r_symndx - extsymoff]);
8165 /* H is the symbol this stub is for. */
8168 mips_elf_hash_table (info)->mips16_stubs_seen = true;
8171 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
8172 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
8174 unsigned long r_symndx;
8175 struct mips_elf_link_hash_entry *h;
8178 /* Look at the relocation information to figure out which symbol
8181 r_symndx = ELF32_R_SYM (relocs->r_info);
8183 if (r_symndx < extsymoff
8184 || sym_hashes[r_symndx - extsymoff] == NULL)
8186 /* This stub was actually built for a static symbol defined
8187 in the same file. We assume that all static symbols in
8188 mips16 code are themselves mips16, so we can simply
8189 discard this stub. Since this function is called before
8190 the linker maps input sections to output sections, we can
8191 easily discard it by setting the SEC_EXCLUDE flag. */
8192 sec->flags |= SEC_EXCLUDE;
8196 h = ((struct mips_elf_link_hash_entry *)
8197 sym_hashes[r_symndx - extsymoff]);
8199 /* H is the symbol this stub is for. */
8201 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
8202 loc = &h->call_fp_stub;
8204 loc = &h->call_stub;
8206 /* If we already have an appropriate stub for this function, we
8207 don't need another one, so we can discard this one. Since
8208 this function is called before the linker maps input sections
8209 to output sections, we can easily discard it by setting the
8210 SEC_EXCLUDE flag. We can also discard this section if we
8211 happen to already know that this is a mips16 function; it is
8212 not necessary to check this here, as it is checked later, but
8213 it is slightly faster to check now. */
8214 if (*loc != NULL || h->root.other == STO_MIPS16)
8216 sec->flags |= SEC_EXCLUDE;
8221 mips_elf_hash_table (info)->mips16_stubs_seen = true;
8231 sgot = mips_elf_got_section (dynobj);
8236 BFD_ASSERT (elf_section_data (sgot) != NULL);
8237 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8238 BFD_ASSERT (g != NULL);
8243 bed = get_elf_backend_data (abfd);
8244 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
8245 for (rel = relocs; rel < rel_end; ++rel)
8247 unsigned long r_symndx;
8248 unsigned int r_type;
8249 struct elf_link_hash_entry *h;
8251 r_symndx = ELF32_R_SYM (rel->r_info);
8252 r_type = ELF32_R_TYPE (rel->r_info);
8254 if (r_symndx < extsymoff)
8256 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
8258 (*_bfd_error_handler)
8259 (_("%s: Malformed reloc detected for section %s"),
8260 bfd_archive_filename (abfd), name);
8261 bfd_set_error (bfd_error_bad_value);
8266 h = sym_hashes[r_symndx - extsymoff];
8268 /* This may be an indirect symbol created because of a version. */
8271 while (h->root.type == bfd_link_hash_indirect)
8272 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8276 /* Some relocs require a global offset table. */
8277 if (dynobj == NULL || sgot == NULL)
8283 case R_MIPS_CALL_HI16:
8284 case R_MIPS_CALL_LO16:
8285 case R_MIPS_GOT_HI16:
8286 case R_MIPS_GOT_LO16:
8287 case R_MIPS_GOT_PAGE:
8288 case R_MIPS_GOT_OFST:
8289 case R_MIPS_GOT_DISP:
8291 elf_hash_table (info)->dynobj = dynobj = abfd;
8292 if (! mips_elf_create_got_section (dynobj, info))
8294 g = mips_elf_got_info (dynobj, &sgot);
8301 && (info->shared || h != NULL)
8302 && (sec->flags & SEC_ALLOC) != 0)
8303 elf_hash_table (info)->dynobj = dynobj = abfd;
8311 if (!h && (r_type == R_MIPS_CALL_LO16
8312 || r_type == R_MIPS_GOT_LO16
8313 || r_type == R_MIPS_GOT_DISP))
8315 /* We may need a local GOT entry for this relocation. We
8316 don't count R_MIPS_GOT_PAGE because we can estimate the
8317 maximum number of pages needed by looking at the size of
8318 the segment. Similar comments apply to R_MIPS_GOT16 and
8319 R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
8320 R_MIPS_CALL_HI16 because these are always followed by an
8321 R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
8323 This estimation is very conservative since we can merge
8324 duplicate entries in the GOT. In order to be less
8325 conservative, we could actually build the GOT here,
8326 rather than in relocate_section. */
8328 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
8336 (*_bfd_error_handler)
8337 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
8338 bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
8339 bfd_set_error (bfd_error_bad_value);
8344 case R_MIPS_CALL_HI16:
8345 case R_MIPS_CALL_LO16:
8348 /* This symbol requires a global offset table entry. */
8349 if (!mips_elf_record_global_got_symbol (h, info, g))
8352 /* We need a stub, not a plt entry for the undefined
8353 function. But we record it as if it needs plt. See
8354 elf_adjust_dynamic_symbol in elflink.h. */
8355 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
8361 case R_MIPS_GOT_HI16:
8362 case R_MIPS_GOT_LO16:
8363 case R_MIPS_GOT_DISP:
8364 /* This symbol requires a global offset table entry. */
8365 if (h && !mips_elf_record_global_got_symbol (h, info, g))
8372 if ((info->shared || h != NULL)
8373 && (sec->flags & SEC_ALLOC) != 0)
8377 const char *dname = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
8379 sreloc = bfd_get_section_by_name (dynobj, dname);
8382 sreloc = bfd_make_section (dynobj, dname);
8384 || ! bfd_set_section_flags (dynobj, sreloc,
8389 | SEC_LINKER_CREATED
8391 || ! bfd_set_section_alignment (dynobj, sreloc,
8396 #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
8399 /* When creating a shared object, we must copy these
8400 reloc types into the output file as R_MIPS_REL32
8401 relocs. We make room for this reloc in the
8402 .rel.dyn reloc section. */
8403 mips_elf_allocate_dynamic_relocations (dynobj, 1);
8404 if ((sec->flags & MIPS_READONLY_SECTION)
8405 == MIPS_READONLY_SECTION)
8406 /* We tell the dynamic linker that there are
8407 relocations against the text segment. */
8408 info->flags |= DF_TEXTREL;
8412 struct mips_elf_link_hash_entry *hmips;
8414 /* We only need to copy this reloc if the symbol is
8415 defined in a dynamic object. */
8416 hmips = (struct mips_elf_link_hash_entry *) h;
8417 ++hmips->possibly_dynamic_relocs;
8418 if ((sec->flags & MIPS_READONLY_SECTION)
8419 == MIPS_READONLY_SECTION)
8420 /* We need it to tell the dynamic linker if there
8421 are relocations against the text segment. */
8422 hmips->readonly_reloc = true;
8425 /* Even though we don't directly need a GOT entry for
8426 this symbol, a symbol must have a dynamic symbol
8427 table index greater that DT_MIPS_GOTSYM if there are
8428 dynamic relocations against it. */
8430 && !mips_elf_record_global_got_symbol (h, info, g))
8434 if (SGI_COMPAT (abfd))
8435 mips_elf_hash_table (info)->compact_rel_size +=
8436 sizeof (Elf32_External_crinfo);
8440 case R_MIPS_GPREL16:
8441 case R_MIPS_LITERAL:
8442 case R_MIPS_GPREL32:
8443 if (SGI_COMPAT (abfd))
8444 mips_elf_hash_table (info)->compact_rel_size +=
8445 sizeof (Elf32_External_crinfo);
8448 /* This relocation describes the C++ object vtable hierarchy.
8449 Reconstruct it for later use during GC. */
8450 case R_MIPS_GNU_VTINHERIT:
8451 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
8455 /* This relocation describes which C++ vtable entries are actually
8456 used. Record for later use during GC. */
8457 case R_MIPS_GNU_VTENTRY:
8458 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
8466 /* We must not create a stub for a symbol that has relocations
8467 related to taking the function's address. */
8473 struct mips_elf_link_hash_entry *mh;
8475 mh = (struct mips_elf_link_hash_entry *) h;
8476 mh->no_fn_stub = true;
8480 case R_MIPS_CALL_HI16:
8481 case R_MIPS_CALL_LO16:
8485 /* If this reloc is not a 16 bit call, and it has a global
8486 symbol, then we will need the fn_stub if there is one.
8487 References from a stub section do not count. */
8489 && r_type != R_MIPS16_26
8490 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
8491 sizeof FN_STUB - 1) != 0
8492 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
8493 sizeof CALL_STUB - 1) != 0
8494 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
8495 sizeof CALL_FP_STUB - 1) != 0)
8497 struct mips_elf_link_hash_entry *mh;
8499 mh = (struct mips_elf_link_hash_entry *) h;
8500 mh->need_fn_stub = true;
8507 /* Return the section that should be marked against GC for a given
8511 _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
8513 struct bfd_link_info *info ATTRIBUTE_UNUSED;
8514 Elf_Internal_Rela *rel;
8515 struct elf_link_hash_entry *h;
8516 Elf_Internal_Sym *sym;
8518 /* ??? Do mips16 stub sections need to be handled special? */
8522 switch (ELF32_R_TYPE (rel->r_info))
8524 case R_MIPS_GNU_VTINHERIT:
8525 case R_MIPS_GNU_VTENTRY:
8529 switch (h->root.type)
8531 case bfd_link_hash_defined:
8532 case bfd_link_hash_defweak:
8533 return h->root.u.def.section;
8535 case bfd_link_hash_common:
8536 return h->root.u.c.p->section;
8545 return bfd_section_from_elf_index (abfd, sym->st_shndx);
8551 /* Update the got entry reference counts for the section being removed. */
8554 _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
8555 bfd *abfd ATTRIBUTE_UNUSED;
8556 struct bfd_link_info *info ATTRIBUTE_UNUSED;
8557 asection *sec ATTRIBUTE_UNUSED;
8558 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
8561 Elf_Internal_Shdr *symtab_hdr;
8562 struct elf_link_hash_entry **sym_hashes;
8563 bfd_signed_vma *local_got_refcounts;
8564 const Elf_Internal_Rela *rel, *relend;
8565 unsigned long r_symndx;
8566 struct elf_link_hash_entry *h;
8568 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8569 sym_hashes = elf_sym_hashes (abfd);
8570 local_got_refcounts = elf_local_got_refcounts (abfd);
8572 relend = relocs + sec->reloc_count;
8573 for (rel = relocs; rel < relend; rel++)
8574 switch (ELF32_R_TYPE (rel->r_info))
8578 case R_MIPS_CALL_HI16:
8579 case R_MIPS_CALL_LO16:
8580 case R_MIPS_GOT_HI16:
8581 case R_MIPS_GOT_LO16:
8582 /* ??? It would seem that the existing MIPS code does no sort
8583 of reference counting or whatnot on its GOT and PLT entries,
8584 so it is not possible to garbage collect them at this time. */
8595 /* Copy data from a MIPS ELF indirect symbol to its direct symbol,
8596 hiding the old indirect symbol. Process additional relocation
8597 information. Also called for weakdefs, in which case we just let
8598 _bfd_elf_link_hash_copy_indirect copy the flags for us. */
8601 _bfd_mips_elf_copy_indirect_symbol (dir, ind)
8602 struct elf_link_hash_entry *dir, *ind;
8604 struct mips_elf_link_hash_entry *dirmips, *indmips;
8606 _bfd_elf_link_hash_copy_indirect (dir, ind);
8608 if (ind->root.type != bfd_link_hash_indirect)
8611 dirmips = (struct mips_elf_link_hash_entry *) dir;
8612 indmips = (struct mips_elf_link_hash_entry *) ind;
8613 dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs;
8614 if (indmips->readonly_reloc)
8615 dirmips->readonly_reloc = true;
8616 if (dirmips->min_dyn_reloc_index == 0
8617 || (indmips->min_dyn_reloc_index != 0
8618 && indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index))
8619 dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index;
8620 if (indmips->no_fn_stub)
8621 dirmips->no_fn_stub = true;
8624 /* Adjust a symbol defined by a dynamic object and referenced by a
8625 regular object. The current definition is in some section of the
8626 dynamic object, but we're not including those sections. We have to
8627 change the definition to something the rest of the link can
8631 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
8632 struct bfd_link_info *info;
8633 struct elf_link_hash_entry *h;
8636 struct mips_elf_link_hash_entry *hmips;
8639 dynobj = elf_hash_table (info)->dynobj;
8641 /* Make sure we know what is going on here. */
8642 BFD_ASSERT (dynobj != NULL
8643 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
8644 || h->weakdef != NULL
8645 || ((h->elf_link_hash_flags
8646 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8647 && (h->elf_link_hash_flags
8648 & ELF_LINK_HASH_REF_REGULAR) != 0
8649 && (h->elf_link_hash_flags
8650 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
8652 /* If this symbol is defined in a dynamic object, we need to copy
8653 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
8655 hmips = (struct mips_elf_link_hash_entry *) h;
8656 if (! info->relocateable
8657 && hmips->possibly_dynamic_relocs != 0
8658 && (h->root.type == bfd_link_hash_defweak
8659 || (h->elf_link_hash_flags
8660 & ELF_LINK_HASH_DEF_REGULAR) == 0))
8662 mips_elf_allocate_dynamic_relocations (dynobj,
8663 hmips->possibly_dynamic_relocs);
8664 if (hmips->readonly_reloc)
8665 /* We tell the dynamic linker that there are relocations
8666 against the text segment. */
8667 info->flags |= DF_TEXTREL;
8670 /* For a function, create a stub, if allowed. */
8671 if (! hmips->no_fn_stub
8672 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
8674 if (! elf_hash_table (info)->dynamic_sections_created)
8677 /* If this symbol is not defined in a regular file, then set
8678 the symbol to the stub location. This is required to make
8679 function pointers compare as equal between the normal
8680 executable and the shared library. */
8681 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
8683 /* We need .stub section. */
8684 s = bfd_get_section_by_name (dynobj,
8685 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8686 BFD_ASSERT (s != NULL);
8688 h->root.u.def.section = s;
8689 h->root.u.def.value = s->_raw_size;
8691 /* XXX Write this stub address somewhere. */
8692 h->plt.offset = s->_raw_size;
8694 /* Make room for this stub code. */
8695 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
8697 /* The last half word of the stub will be filled with the index
8698 of this symbol in .dynsym section. */
8702 else if ((h->type == STT_FUNC)
8703 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
8705 /* This will set the entry for this symbol in the GOT to 0, and
8706 the dynamic linker will take care of this. */
8707 h->root.u.def.value = 0;
8711 /* If this is a weak symbol, and there is a real definition, the
8712 processor independent code will have arranged for us to see the
8713 real definition first, and we can just use the same value. */
8714 if (h->weakdef != NULL)
8716 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
8717 || h->weakdef->root.type == bfd_link_hash_defweak);
8718 h->root.u.def.section = h->weakdef->root.u.def.section;
8719 h->root.u.def.value = h->weakdef->root.u.def.value;
8723 /* This is a reference to a symbol defined by a dynamic object which
8724 is not a function. */
8729 /* This function is called after all the input files have been read,
8730 and the input sections have been assigned to output sections. We
8731 check for any mips16 stub sections that we can discard. */
8733 static boolean mips_elf_check_mips16_stubs
8734 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
8737 _bfd_mips_elf_always_size_sections (output_bfd, info)
8739 struct bfd_link_info *info;
8743 /* The .reginfo section has a fixed size. */
8744 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
8746 bfd_set_section_size (output_bfd, ri,
8747 (bfd_size_type) sizeof (Elf32_External_RegInfo));
8749 if (info->relocateable
8750 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
8753 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
8754 mips_elf_check_mips16_stubs,
8760 /* Check the mips16 stubs for a particular symbol, and see if we can
8764 mips_elf_check_mips16_stubs (h, data)
8765 struct mips_elf_link_hash_entry *h;
8766 PTR data ATTRIBUTE_UNUSED;
8768 if (h->fn_stub != NULL
8769 && ! h->need_fn_stub)
8771 /* We don't need the fn_stub; the only references to this symbol
8772 are 16 bit calls. Clobber the size to 0 to prevent it from
8773 being included in the link. */
8774 h->fn_stub->_raw_size = 0;
8775 h->fn_stub->_cooked_size = 0;
8776 h->fn_stub->flags &= ~SEC_RELOC;
8777 h->fn_stub->reloc_count = 0;
8778 h->fn_stub->flags |= SEC_EXCLUDE;
8781 if (h->call_stub != NULL
8782 && h->root.other == STO_MIPS16)
8784 /* We don't need the call_stub; this is a 16 bit function, so
8785 calls from other 16 bit functions are OK. Clobber the size
8786 to 0 to prevent it from being included in the link. */
8787 h->call_stub->_raw_size = 0;
8788 h->call_stub->_cooked_size = 0;
8789 h->call_stub->flags &= ~SEC_RELOC;
8790 h->call_stub->reloc_count = 0;
8791 h->call_stub->flags |= SEC_EXCLUDE;
8794 if (h->call_fp_stub != NULL
8795 && h->root.other == STO_MIPS16)
8797 /* We don't need the call_stub; this is a 16 bit function, so
8798 calls from other 16 bit functions are OK. Clobber the size
8799 to 0 to prevent it from being included in the link. */
8800 h->call_fp_stub->_raw_size = 0;
8801 h->call_fp_stub->_cooked_size = 0;
8802 h->call_fp_stub->flags &= ~SEC_RELOC;
8803 h->call_fp_stub->reloc_count = 0;
8804 h->call_fp_stub->flags |= SEC_EXCLUDE;
8810 /* Set the sizes of the dynamic sections. */
8813 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
8815 struct bfd_link_info *info;
8820 struct mips_got_info *g = NULL;
8822 dynobj = elf_hash_table (info)->dynobj;
8823 BFD_ASSERT (dynobj != NULL);
8825 if (elf_hash_table (info)->dynamic_sections_created)
8827 /* Set the contents of the .interp section to the interpreter. */
8830 s = bfd_get_section_by_name (dynobj, ".interp");
8831 BFD_ASSERT (s != NULL);
8833 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
8835 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
8839 /* The check_relocs and adjust_dynamic_symbol entry points have
8840 determined the sizes of the various dynamic sections. Allocate
8843 for (s = dynobj->sections; s != NULL; s = s->next)
8848 /* It's OK to base decisions on the section name, because none
8849 of the dynobj section names depend upon the input files. */
8850 name = bfd_get_section_name (dynobj, s);
8852 if ((s->flags & SEC_LINKER_CREATED) == 0)
8857 if (strncmp (name, ".rel", 4) == 0)
8859 if (s->_raw_size == 0)
8861 /* We only strip the section if the output section name
8862 has the same name. Otherwise, there might be several
8863 input sections for this output section. FIXME: This
8864 code is probably not needed these days anyhow, since
8865 the linker now does not create empty output sections. */
8866 if (s->output_section != NULL
8868 bfd_get_section_name (s->output_section->owner,
8869 s->output_section)) == 0)
8874 const char *outname;
8877 /* If this relocation section applies to a read only
8878 section, then we probably need a DT_TEXTREL entry.
8879 If the relocation section is .rel.dyn, we always
8880 assert a DT_TEXTREL entry rather than testing whether
8881 there exists a relocation to a read only section or
8883 outname = bfd_get_section_name (output_bfd,
8885 target = bfd_get_section_by_name (output_bfd, outname + 4);
8887 && (target->flags & SEC_READONLY) != 0
8888 && (target->flags & SEC_ALLOC) != 0)
8890 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
8893 /* We use the reloc_count field as a counter if we need
8894 to copy relocs into the output file. */
8896 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
8900 else if (strncmp (name, ".got", 4) == 0)
8903 bfd_size_type loadable_size = 0;
8904 bfd_size_type local_gotno;
8907 BFD_ASSERT (elf_section_data (s) != NULL);
8908 g = (struct mips_got_info *) elf_section_data (s)->tdata;
8909 BFD_ASSERT (g != NULL);
8911 /* Calculate the total loadable size of the output. That
8912 will give us the maximum number of GOT_PAGE entries
8914 for (sub = info->input_bfds; sub; sub = sub->link_next)
8916 asection *subsection;
8918 for (subsection = sub->sections;
8920 subsection = subsection->next)
8922 if ((subsection->flags & SEC_ALLOC) == 0)
8924 loadable_size += ((subsection->_raw_size + 0xf)
8925 &~ (bfd_size_type) 0xf);
8928 loadable_size += MIPS_FUNCTION_STUB_SIZE;
8930 /* Assume there are two loadable segments consisting of
8931 contiguous sections. Is 5 enough? */
8932 local_gotno = (loadable_size >> 16) + 5;
8933 if (IRIX_COMPAT (output_bfd) == ict_irix6)
8934 /* It's possible we will need GOT_PAGE entries as well as
8935 GOT16 entries. Often, these will be able to share GOT
8936 entries, but not always. */
8939 g->local_gotno += local_gotno;
8940 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
8942 /* There has to be a global GOT entry for every symbol with
8943 a dynamic symbol table index of DT_MIPS_GOTSYM or
8944 higher. Therefore, it make sense to put those symbols
8945 that need GOT entries at the end of the symbol table. We
8947 if (!mips_elf_sort_hash_table (info, 1))
8950 if (g->global_gotsym != NULL)
8951 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
8953 /* If there are no global symbols, or none requiring
8954 relocations, then GLOBAL_GOTSYM will be NULL. */
8956 g->global_gotno = i;
8957 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
8959 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
8961 /* Irix rld assumes that the function stub isn't at the end
8962 of .text section. So put a dummy. XXX */
8963 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
8965 else if (! info->shared
8966 && ! mips_elf_hash_table (info)->use_rld_obj_head
8967 && strncmp (name, ".rld_map", 8) == 0)
8969 /* We add a room for __rld_map. It will be filled in by the
8970 rtld to contain a pointer to the _r_debug structure. */
8973 else if (SGI_COMPAT (output_bfd)
8974 && strncmp (name, ".compact_rel", 12) == 0)
8975 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
8976 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
8978 s->_raw_size = (sizeof (Elf32_External_Msym)
8979 * (elf_hash_table (info)->dynsymcount
8980 + bfd_count_sections (output_bfd)));
8981 else if (strncmp (name, ".init", 5) != 0)
8983 /* It's not one of our sections, so don't allocate space. */
8989 _bfd_strip_section_from_output (info, s);
8993 /* Allocate memory for the section contents. */
8994 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
8995 if (s->contents == NULL && s->_raw_size != 0)
8997 bfd_set_error (bfd_error_no_memory);
9002 if (elf_hash_table (info)->dynamic_sections_created)
9004 /* Add some entries to the .dynamic section. We fill in the
9005 values later, in elf_mips_finish_dynamic_sections, but we
9006 must add the entries now so that we get the correct size for
9007 the .dynamic section. The DT_DEBUG entry is filled in by the
9008 dynamic linker and used by the debugger. */
9011 /* SGI object has the equivalence of DT_DEBUG in the
9012 DT_MIPS_RLD_MAP entry. */
9013 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
9015 if (!SGI_COMPAT (output_bfd))
9017 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
9023 /* Shared libraries on traditional mips have DT_DEBUG. */
9024 if (!SGI_COMPAT (output_bfd))
9026 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
9031 if (reltext && SGI_COMPAT (output_bfd))
9032 info->flags |= DF_TEXTREL;
9034 if ((info->flags & DF_TEXTREL) != 0)
9036 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
9040 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
9043 if (bfd_get_section_by_name (dynobj,
9044 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
9046 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
9049 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
9052 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
9056 if (SGI_COMPAT (output_bfd))
9058 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
9062 if (SGI_COMPAT (output_bfd))
9064 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
9068 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
9070 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
9073 s = bfd_get_section_by_name (dynobj, ".liblist");
9074 BFD_ASSERT (s != NULL);
9076 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
9080 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
9083 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
9087 /* Time stamps in executable files are a bad idea. */
9088 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
9093 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
9098 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
9102 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
9105 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
9108 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
9111 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
9114 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
9117 if (IRIX_COMPAT (dynobj) == ict_irix5
9118 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
9121 if (IRIX_COMPAT (dynobj) == ict_irix6
9122 && (bfd_get_section_by_name
9123 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
9124 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
9127 if (bfd_get_section_by_name (dynobj,
9128 MIPS_ELF_MSYM_SECTION_NAME (dynobj))
9129 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
9136 /* If NAME is one of the special IRIX6 symbols defined by the linker,
9137 adjust it appropriately now. */
9140 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
9141 bfd *abfd ATTRIBUTE_UNUSED;
9143 Elf_Internal_Sym *sym;
9145 /* The linker script takes care of providing names and values for
9146 these, but we must place them into the right sections. */
9147 static const char* const text_section_symbols[] = {
9150 "__dso_displacement",
9152 "__program_header_table",
9156 static const char* const data_section_symbols[] = {
9164 const char* const *p;
9167 for (i = 0; i < 2; ++i)
9168 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
9171 if (strcmp (*p, name) == 0)
9173 /* All of these symbols are given type STT_SECTION by the
9175 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9177 /* The IRIX linker puts these symbols in special sections. */
9179 sym->st_shndx = SHN_MIPS_TEXT;
9181 sym->st_shndx = SHN_MIPS_DATA;
9187 /* Finish up dynamic symbol handling. We set the contents of various
9188 dynamic sections here. */
9191 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
9193 struct bfd_link_info *info;
9194 struct elf_link_hash_entry *h;
9195 Elf_Internal_Sym *sym;
9201 struct mips_got_info *g;
9203 struct mips_elf_link_hash_entry *mh;
9205 dynobj = elf_hash_table (info)->dynobj;
9206 gval = sym->st_value;
9207 mh = (struct mips_elf_link_hash_entry *) h;
9209 if (h->plt.offset != (bfd_vma) -1)
9213 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
9215 /* This symbol has a stub. Set it up. */
9217 BFD_ASSERT (h->dynindx != -1);
9219 s = bfd_get_section_by_name (dynobj,
9220 MIPS_ELF_STUB_SECTION_NAME (dynobj));
9221 BFD_ASSERT (s != NULL);
9223 /* Fill the stub. */
9225 bfd_put_32 (output_bfd, (bfd_vma) STUB_LW (output_bfd), p);
9227 bfd_put_32 (output_bfd, (bfd_vma) STUB_MOVE (output_bfd), p);
9230 /* FIXME: Can h->dynindex be more than 64K? */
9231 if (h->dynindx & 0xffff0000)
9234 bfd_put_32 (output_bfd, (bfd_vma) STUB_JALR, p);
9236 bfd_put_32 (output_bfd, (bfd_vma) STUB_LI16 (output_bfd) + h->dynindx, p);
9238 BFD_ASSERT (h->plt.offset <= s->_raw_size);
9239 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
9241 /* Mark the symbol as undefined. plt.offset != -1 occurs
9242 only for the referenced symbol. */
9243 sym->st_shndx = SHN_UNDEF;
9245 /* The run-time linker uses the st_value field of the symbol
9246 to reset the global offset table entry for this external
9247 to its stub address when unlinking a shared object. */
9248 gval = s->output_section->vma + s->output_offset + h->plt.offset;
9249 sym->st_value = gval;
9252 BFD_ASSERT (h->dynindx != -1
9253 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
9255 sgot = mips_elf_got_section (dynobj);
9256 BFD_ASSERT (sgot != NULL);
9257 BFD_ASSERT (elf_section_data (sgot) != NULL);
9258 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
9259 BFD_ASSERT (g != NULL);
9261 /* Run through the global symbol table, creating GOT entries for all
9262 the symbols that need them. */
9263 if (g->global_gotsym != NULL
9264 && h->dynindx >= g->global_gotsym->dynindx)
9270 value = sym->st_value;
9273 /* For an entity defined in a shared object, this will be
9274 NULL. (For functions in shared objects for
9275 which we have created stubs, ST_VALUE will be non-NULL.
9276 That's because such the functions are now no longer defined
9277 in a shared object.) */
9279 if (info->shared && h->root.type == bfd_link_hash_undefined)
9282 value = h->root.u.def.value;
9284 offset = mips_elf_global_got_index (dynobj, h);
9285 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
9288 /* Create a .msym entry, if appropriate. */
9289 smsym = bfd_get_section_by_name (dynobj,
9290 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
9293 Elf32_Internal_Msym msym;
9295 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
9296 /* It is undocumented what the `1' indicates, but IRIX6 uses
9298 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
9299 bfd_mips_elf_swap_msym_out
9301 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
9304 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
9305 name = h->root.root.string;
9306 if (strcmp (name, "_DYNAMIC") == 0
9307 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
9308 sym->st_shndx = SHN_ABS;
9309 else if (strcmp (name, "_DYNAMIC_LINK") == 0
9310 || strcmp (name, "_DYNAMIC_LINKING") == 0)
9312 sym->st_shndx = SHN_ABS;
9313 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9316 else if (strcmp (name, "_gp_disp") == 0)
9318 sym->st_shndx = SHN_ABS;
9319 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9320 sym->st_value = elf_gp (output_bfd);
9322 else if (SGI_COMPAT (output_bfd))
9324 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
9325 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
9327 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9328 sym->st_other = STO_PROTECTED;
9330 sym->st_shndx = SHN_MIPS_DATA;
9332 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
9334 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9335 sym->st_other = STO_PROTECTED;
9336 sym->st_value = mips_elf_hash_table (info)->procedure_count;
9337 sym->st_shndx = SHN_ABS;
9339 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
9341 if (h->type == STT_FUNC)
9342 sym->st_shndx = SHN_MIPS_TEXT;
9343 else if (h->type == STT_OBJECT)
9344 sym->st_shndx = SHN_MIPS_DATA;
9348 /* Handle the IRIX6-specific symbols. */
9349 if (IRIX_COMPAT (output_bfd) == ict_irix6)
9350 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
9354 if (! mips_elf_hash_table (info)->use_rld_obj_head
9355 && (strcmp (name, "__rld_map") == 0
9356 || strcmp (name, "__RLD_MAP") == 0))
9358 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
9359 BFD_ASSERT (s != NULL);
9360 sym->st_value = s->output_section->vma + s->output_offset;
9361 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
9362 if (mips_elf_hash_table (info)->rld_value == 0)
9363 mips_elf_hash_table (info)->rld_value = sym->st_value;
9365 else if (mips_elf_hash_table (info)->use_rld_obj_head
9366 && strcmp (name, "__rld_obj_head") == 0)
9368 /* IRIX6 does not use a .rld_map section. */
9369 if (IRIX_COMPAT (output_bfd) == ict_irix5
9370 || IRIX_COMPAT (output_bfd) == ict_none)
9371 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
9373 mips_elf_hash_table (info)->rld_value = sym->st_value;
9377 /* If this is a mips16 symbol, force the value to be even. */
9378 if (sym->st_other == STO_MIPS16
9379 && (sym->st_value & 1) != 0)
9385 /* Finish up the dynamic sections. */
9388 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
9390 struct bfd_link_info *info;
9395 struct mips_got_info *g;
9397 dynobj = elf_hash_table (info)->dynobj;
9399 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9401 sgot = mips_elf_got_section (dynobj);
9406 BFD_ASSERT (elf_section_data (sgot) != NULL);
9407 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
9408 BFD_ASSERT (g != NULL);
9411 if (elf_hash_table (info)->dynamic_sections_created)
9415 BFD_ASSERT (sdyn != NULL);
9416 BFD_ASSERT (g != NULL);
9418 for (b = sdyn->contents;
9419 b < sdyn->contents + sdyn->_raw_size;
9420 b += MIPS_ELF_DYN_SIZE (dynobj))
9422 Elf_Internal_Dyn dyn;
9428 /* Read in the current dynamic entry. */
9429 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
9431 /* Assume that we're going to modify it and write it out. */
9437 s = (bfd_get_section_by_name
9439 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
9440 BFD_ASSERT (s != NULL);
9441 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
9445 /* Rewrite DT_STRSZ. */
9447 _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
9453 case DT_MIPS_CONFLICT:
9456 case DT_MIPS_LIBLIST:
9459 s = bfd_get_section_by_name (output_bfd, name);
9460 BFD_ASSERT (s != NULL);
9461 dyn.d_un.d_ptr = s->vma;
9464 case DT_MIPS_RLD_VERSION:
9465 dyn.d_un.d_val = 1; /* XXX */
9469 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
9472 case DT_MIPS_CONFLICTNO:
9474 elemsize = sizeof (Elf32_Conflict);
9477 case DT_MIPS_LIBLISTNO:
9479 elemsize = sizeof (Elf32_Lib);
9481 s = bfd_get_section_by_name (output_bfd, name);
9484 if (s->_cooked_size != 0)
9485 dyn.d_un.d_val = s->_cooked_size / elemsize;
9487 dyn.d_un.d_val = s->_raw_size / elemsize;
9493 case DT_MIPS_TIME_STAMP:
9494 time ((time_t *) &dyn.d_un.d_val);
9497 case DT_MIPS_ICHECKSUM:
9502 case DT_MIPS_IVERSION:
9507 case DT_MIPS_BASE_ADDRESS:
9508 s = output_bfd->sections;
9509 BFD_ASSERT (s != NULL);
9510 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
9513 case DT_MIPS_LOCAL_GOTNO:
9514 dyn.d_un.d_val = g->local_gotno;
9517 case DT_MIPS_UNREFEXTNO:
9518 /* The index into the dynamic symbol table which is the
9519 entry of the first external symbol that is not
9520 referenced within the same object. */
9521 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
9524 case DT_MIPS_GOTSYM:
9525 if (g->global_gotsym)
9527 dyn.d_un.d_val = g->global_gotsym->dynindx;
9530 /* In case if we don't have global got symbols we default
9531 to setting DT_MIPS_GOTSYM to the same value as
9532 DT_MIPS_SYMTABNO, so we just fall through. */
9534 case DT_MIPS_SYMTABNO:
9536 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
9537 s = bfd_get_section_by_name (output_bfd, name);
9538 BFD_ASSERT (s != NULL);
9540 if (s->_cooked_size != 0)
9541 dyn.d_un.d_val = s->_cooked_size / elemsize;
9543 dyn.d_un.d_val = s->_raw_size / elemsize;
9546 case DT_MIPS_HIPAGENO:
9547 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
9550 case DT_MIPS_RLD_MAP:
9551 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
9554 case DT_MIPS_OPTIONS:
9555 s = (bfd_get_section_by_name
9556 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
9557 dyn.d_un.d_ptr = s->vma;
9561 s = (bfd_get_section_by_name
9562 (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
9563 dyn.d_un.d_ptr = s->vma;
9572 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
9577 /* The first entry of the global offset table will be filled at
9578 runtime. The second entry will be used by some runtime loaders.
9579 This isn't the case of Irix rld. */
9580 if (sgot != NULL && sgot->_raw_size > 0)
9582 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
9583 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
9584 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
9588 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
9589 = MIPS_ELF_GOT_SIZE (output_bfd);
9594 Elf32_compact_rel cpt;
9596 /* ??? The section symbols for the output sections were set up in
9597 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
9598 symbols. Should we do so? */
9600 smsym = bfd_get_section_by_name (dynobj,
9601 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
9604 Elf32_Internal_Msym msym;
9606 msym.ms_hash_value = 0;
9607 msym.ms_info = ELF32_MS_INFO (0, 1);
9609 for (s = output_bfd->sections; s != NULL; s = s->next)
9611 long dynindx = elf_section_data (s)->dynindx;
9613 bfd_mips_elf_swap_msym_out
9615 (((Elf32_External_Msym *) smsym->contents)
9620 if (SGI_COMPAT (output_bfd))
9622 /* Write .compact_rel section out. */
9623 s = bfd_get_section_by_name (dynobj, ".compact_rel");
9627 cpt.num = s->reloc_count;
9629 cpt.offset = (s->output_section->filepos
9630 + sizeof (Elf32_External_compact_rel));
9633 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
9634 ((Elf32_External_compact_rel *)
9637 /* Clean up a dummy stub function entry in .text. */
9638 s = bfd_get_section_by_name (dynobj,
9639 MIPS_ELF_STUB_SECTION_NAME (dynobj));
9642 file_ptr dummy_offset;
9644 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
9645 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
9646 memset (s->contents + dummy_offset, 0,
9647 MIPS_FUNCTION_STUB_SIZE);
9652 /* We need to sort the entries of the dynamic relocation section. */
9654 if (!ABI_64_P (output_bfd))
9658 reldyn = bfd_get_section_by_name (dynobj,
9659 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
9660 if (reldyn != NULL && reldyn->reloc_count > 2)
9662 reldyn_sorting_bfd = output_bfd;
9663 qsort ((Elf32_External_Rel *) reldyn->contents + 1,
9664 (size_t) reldyn->reloc_count - 1,
9665 sizeof (Elf32_External_Rel), sort_dynamic_relocs);
9669 /* Clean up a first relocation in .rel.dyn. */
9670 s = bfd_get_section_by_name (dynobj,
9671 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
9672 if (s != NULL && s->_raw_size > 0)
9673 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
9679 /* Support for core dump NOTE sections */
9681 _bfd_elf32_mips_grok_prstatus (abfd, note)
9683 Elf_Internal_Note *note;
9686 unsigned int raw_size;
9688 switch (note->descsz)
9693 case 256: /* Linux/MIPS */
9695 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
9698 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9707 /* Make a ".reg/999" section. */
9708 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
9709 raw_size, note->descpos + offset);
9713 _bfd_elf32_mips_grok_psinfo (abfd, note)
9715 Elf_Internal_Note *note;
9717 switch (note->descsz)
9722 case 128: /* Linux/MIPS elf_prpsinfo */
9723 elf_tdata (abfd)->core_program
9724 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
9725 elf_tdata (abfd)->core_command
9726 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
9729 /* Note that for some reason, a spurious space is tacked
9730 onto the end of the args in some (at least one anyway)
9731 implementations, so strip it off if it exists. */
9734 char *command = elf_tdata (abfd)->core_command;
9735 int n = strlen (command);
9737 if (0 < n && command[n - 1] == ' ')
9738 command[n - 1] = '\0';
9747 _bfd_elf32_mips_discard_info (abfd, cookie, info)
9749 struct elf_reloc_cookie *cookie;
9750 struct bfd_link_info *info;
9753 struct elf_backend_data *bed = get_elf_backend_data (abfd);
9754 boolean ret = false;
9755 unsigned char *tdata;
9758 o = bfd_get_section_by_name (abfd, ".pdr");
9761 if (o->_raw_size == 0)
9763 if (o->_raw_size % PDR_SIZE != 0)
9765 if (o->output_section != NULL
9766 && bfd_is_abs_section (o->output_section))
9769 tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE);
9773 cookie->rels = _bfd_elf32_link_read_relocs (abfd, o, (PTR) NULL,
9774 (Elf_Internal_Rela *) NULL,
9782 cookie->rel = cookie->rels;
9784 cookie->rels + o->reloc_count * bed->s->int_rels_per_ext_rel;
9786 for (i = 0, skip = 0; i < o->_raw_size; i ++)
9788 if (_bfd_elf32_reloc_symbol_deleted_p (i * PDR_SIZE, cookie))
9797 elf_section_data (o)->tdata = tdata;
9798 o->_cooked_size = o->_raw_size - skip * PDR_SIZE;
9804 if (! info->keep_memory)
9805 free (cookie->rels);
9811 _bfd_elf32_mips_ignore_discarded_relocs (sec)
9814 if (strcmp (sec->name, ".pdr") == 0)
9820 _bfd_elf32_mips_write_section (output_bfd, sec, contents)
9825 bfd_byte *to, *from, *end;
9828 if (strcmp (sec->name, ".pdr") != 0)
9831 if (elf_section_data (sec)->tdata == NULL)
9835 end = contents + sec->_raw_size;
9836 for (from = contents, i = 0;
9838 from += PDR_SIZE, i++)
9840 if (((unsigned char *)elf_section_data (sec)->tdata)[i] == 1)
9843 memcpy (to, from, PDR_SIZE);
9846 bfd_set_section_contents (output_bfd, sec->output_section, contents,
9847 (file_ptr) sec->output_offset,
9852 /* Given a data section and an in-memory embedded reloc section, store
9853 relocation information into the embedded reloc section which can be
9854 used at runtime to relocate the data section. This is called by the
9855 linker when the --embedded-relocs switch is used. This is called
9856 after the add_symbols entry point has been called for all the
9857 objects, and before the final_link entry point is called. */
9860 bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
9862 struct bfd_link_info *info;
9867 Elf_Internal_Shdr *symtab_hdr;
9868 Elf_Internal_Shdr *shndx_hdr;
9869 Elf32_External_Sym *extsyms;
9870 Elf32_External_Sym *free_extsyms = NULL;
9871 Elf_External_Sym_Shndx *shndx_buf = NULL;
9872 Elf_Internal_Rela *internal_relocs;
9873 Elf_Internal_Rela *free_relocs = NULL;
9874 Elf_Internal_Rela *irel, *irelend;
9878 BFD_ASSERT (! info->relocateable);
9882 if (datasec->reloc_count == 0)
9885 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9886 /* Read this BFD's symbols if we haven't done so already, or get the cached
9887 copy if it exists. */
9888 if (symtab_hdr->contents != NULL)
9889 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
9892 /* Go get them off disk. */
9893 if (info->keep_memory)
9894 extsyms = ((Elf32_External_Sym *)
9895 bfd_alloc (abfd, symtab_hdr->sh_size));
9897 extsyms = ((Elf32_External_Sym *)
9898 bfd_malloc (symtab_hdr->sh_size));
9899 if (extsyms == NULL)
9901 if (! info->keep_memory)
9902 free_extsyms = extsyms;
9903 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
9904 || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
9905 != symtab_hdr->sh_size))
9907 if (info->keep_memory)
9908 symtab_hdr->contents = (unsigned char *) extsyms;
9911 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
9912 if (shndx_hdr->sh_size != 0)
9914 amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
9915 shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
9916 if (shndx_buf == NULL)
9918 if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
9919 || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
9923 /* Get a copy of the native relocations. */
9924 internal_relocs = (_bfd_elf32_link_read_relocs
9925 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
9926 info->keep_memory));
9927 if (internal_relocs == NULL)
9929 if (! info->keep_memory)
9930 free_relocs = internal_relocs;
9932 relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12);
9933 if (relsec->contents == NULL)
9936 p = relsec->contents;
9938 irelend = internal_relocs + datasec->reloc_count;
9940 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
9942 asection *targetsec;
9944 /* We are going to write a four byte longword into the runtime
9945 reloc section. The longword will be the address in the data
9946 section which must be relocated. It is followed by the name
9947 of the target section NUL-padded or truncated to 8
9950 /* We can only relocate absolute longword relocs at run time. */
9951 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) &&
9952 (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64))
9954 *errmsg = _("unsupported reloc type");
9955 bfd_set_error (bfd_error_bad_value);
9958 /* Get the target section referred to by the reloc. */
9959 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
9961 Elf32_External_Sym *esym;
9962 Elf_External_Sym_Shndx *shndx;
9963 Elf_Internal_Sym isym;
9965 /* A local symbol. */
9966 esym = extsyms + ELF32_R_SYM (irel->r_info);
9967 shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0);
9968 bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym);
9970 targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
9975 struct elf_link_hash_entry *h;
9977 /* An external symbol. */
9978 indx = ELF32_R_SYM (irel->r_info);
9979 h = elf_sym_hashes (abfd)[indx];
9982 * For some reason, in certain programs, the symbol will
9983 * not be in the hash table. It seems to happen when you
9984 * declare a static table of pointers to const external structures.
9985 * In this case, the relocs are relative to data, not
9986 * text, so just treating it like an undefined link
9987 * should be sufficient.
9989 BFD_ASSERT(h != NULL);
9990 if (h->root.type == bfd_link_hash_defined
9991 || h->root.type == bfd_link_hash_defweak)
9992 targetsec = h->root.u.def.section;
9997 * Set the low bit of the relocation offset if it's a MIPS64 reloc.
9998 * Relocations will always be on (at least) 32-bit boundaries.
10001 bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) +
10002 ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)),
10004 memset (p + 4, 0, 8);
10005 if (targetsec != NULL)
10006 strncpy (p + 4, targetsec->output_section->name, 8);
10009 if (shndx_buf != NULL)
10011 if (free_extsyms != NULL)
10012 free (free_extsyms);
10013 if (free_relocs != NULL)
10014 free (free_relocs);
10018 if (shndx_buf != NULL)
10020 if (free_extsyms != NULL)
10021 free (free_extsyms);
10022 if (free_relocs != NULL)
10023 free (free_relocs);
10027 /* This is almost identical to bfd_generic_get_... except that some
10028 MIPS relocations need to be handled specially. Sigh. */
10031 elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
10032 relocateable, symbols)
10034 struct bfd_link_info *link_info;
10035 struct bfd_link_order *link_order;
10037 boolean relocateable;
10040 /* Get enough memory to hold the stuff */
10041 bfd *input_bfd = link_order->u.indirect.section->owner;
10042 asection *input_section = link_order->u.indirect.section;
10044 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
10045 arelent **reloc_vector = NULL;
10048 if (reloc_size < 0)
10051 reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
10052 if (reloc_vector == NULL && reloc_size != 0)
10055 /* read in the section */
10056 if (!bfd_get_section_contents (input_bfd,
10060 input_section->_raw_size))
10063 /* We're not relaxing the section, so just copy the size info */
10064 input_section->_cooked_size = input_section->_raw_size;
10065 input_section->reloc_done = true;
10067 reloc_count = bfd_canonicalize_reloc (input_bfd,
10071 if (reloc_count < 0)
10074 if (reloc_count > 0)
10079 bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
10082 struct bfd_hash_entry *h;
10083 struct bfd_link_hash_entry *lh;
10084 /* Skip all this stuff if we aren't mixing formats. */
10085 if (abfd && input_bfd
10086 && abfd->xvec == input_bfd->xvec)
10090 h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
10091 lh = (struct bfd_link_hash_entry *) h;
10098 case bfd_link_hash_undefined:
10099 case bfd_link_hash_undefweak:
10100 case bfd_link_hash_common:
10103 case bfd_link_hash_defined:
10104 case bfd_link_hash_defweak:
10106 gp = lh->u.def.value;
10108 case bfd_link_hash_indirect:
10109 case bfd_link_hash_warning:
10111 /* @@FIXME ignoring warning for now */
10113 case bfd_link_hash_new:
10122 for (parent = reloc_vector; *parent != (arelent *) NULL;
10125 char *error_message = (char *) NULL;
10126 bfd_reloc_status_type r;
10128 /* Specific to MIPS: Deal with relocation types that require
10129 knowing the gp of the output bfd. */
10130 asymbol *sym = *(*parent)->sym_ptr_ptr;
10131 if (bfd_is_abs_section (sym->section) && abfd)
10133 /* The special_function wouldn't get called anyways. */
10135 else if (!gp_found)
10137 /* The gp isn't there; let the special function code
10138 fall over on its own. */
10140 else if ((*parent)->howto->special_function
10141 == _bfd_mips_elf_gprel16_reloc)
10143 /* bypass special_function call */
10144 r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
10145 relocateable, (PTR) data, gp);
10146 goto skip_bfd_perform_relocation;
10148 /* end mips specific stuff */
10150 r = bfd_perform_relocation (input_bfd,
10154 relocateable ? abfd : (bfd *) NULL,
10156 skip_bfd_perform_relocation:
10160 asection *os = input_section->output_section;
10162 /* A partial link, so keep the relocs */
10163 os->orelocation[os->reloc_count] = *parent;
10167 if (r != bfd_reloc_ok)
10171 case bfd_reloc_undefined:
10172 if (!((*link_info->callbacks->undefined_symbol)
10173 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
10174 input_bfd, input_section, (*parent)->address,
10178 case bfd_reloc_dangerous:
10179 BFD_ASSERT (error_message != (char *) NULL);
10180 if (!((*link_info->callbacks->reloc_dangerous)
10181 (link_info, error_message, input_bfd, input_section,
10182 (*parent)->address)))
10185 case bfd_reloc_overflow:
10186 if (!((*link_info->callbacks->reloc_overflow)
10187 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
10188 (*parent)->howto->name, (*parent)->addend,
10189 input_bfd, input_section, (*parent)->address)))
10192 case bfd_reloc_outofrange:
10201 if (reloc_vector != NULL)
10202 free (reloc_vector);
10206 if (reloc_vector != NULL)
10207 free (reloc_vector);
10211 #define bfd_elf32_bfd_get_relocated_section_contents \
10212 elf32_mips_get_relocated_section_contents
10214 /* ECOFF swapping routines. These are used when dealing with the
10215 .mdebug section, which is in the ECOFF debugging format. */
10216 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
10217 /* Symbol table magic number. */
10219 /* Alignment of debugging information. E.g., 4. */
10221 /* Sizes of external symbolic information. */
10222 sizeof (struct hdr_ext),
10223 sizeof (struct dnr_ext),
10224 sizeof (struct pdr_ext),
10225 sizeof (struct sym_ext),
10226 sizeof (struct opt_ext),
10227 sizeof (struct fdr_ext),
10228 sizeof (struct rfd_ext),
10229 sizeof (struct ext_ext),
10230 /* Functions to swap in external symbolic data. */
10239 _bfd_ecoff_swap_tir_in,
10240 _bfd_ecoff_swap_rndx_in,
10241 /* Functions to swap out external symbolic data. */
10242 ecoff_swap_hdr_out,
10243 ecoff_swap_dnr_out,
10244 ecoff_swap_pdr_out,
10245 ecoff_swap_sym_out,
10246 ecoff_swap_opt_out,
10247 ecoff_swap_fdr_out,
10248 ecoff_swap_rfd_out,
10249 ecoff_swap_ext_out,
10250 _bfd_ecoff_swap_tir_out,
10251 _bfd_ecoff_swap_rndx_out,
10252 /* Function to read in symbolic data. */
10253 _bfd_mips_elf_read_ecoff_info
10256 #define ELF_ARCH bfd_arch_mips
10257 #define ELF_MACHINE_CODE EM_MIPS
10259 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
10260 a value of 0x1000, and we are compatible. */
10261 #define ELF_MAXPAGESIZE 0x1000
10263 #define elf_backend_collect true
10264 #define elf_backend_type_change_ok true
10265 #define elf_backend_can_gc_sections true
10266 #define elf_info_to_howto mips_info_to_howto_rela
10267 #define elf_info_to_howto_rel mips_info_to_howto_rel
10268 #define elf_backend_sym_is_global mips_elf_sym_is_global
10269 #define elf_backend_object_p _bfd_mips_elf_object_p
10270 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
10271 #define elf_backend_section_processing _bfd_mips_elf_section_processing
10272 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
10273 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
10274 #define elf_backend_section_from_bfd_section \
10275 _bfd_mips_elf_section_from_bfd_section
10276 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
10277 #define elf_backend_link_output_symbol_hook \
10278 _bfd_mips_elf_link_output_symbol_hook
10279 #define elf_backend_create_dynamic_sections \
10280 _bfd_mips_elf_create_dynamic_sections
10281 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
10282 #define elf_backend_adjust_dynamic_symbol \
10283 _bfd_mips_elf_adjust_dynamic_symbol
10284 #define elf_backend_always_size_sections \
10285 _bfd_mips_elf_always_size_sections
10286 #define elf_backend_size_dynamic_sections \
10287 _bfd_mips_elf_size_dynamic_sections
10288 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
10289 #define elf_backend_finish_dynamic_symbol \
10290 _bfd_mips_elf_finish_dynamic_symbol
10291 #define elf_backend_finish_dynamic_sections \
10292 _bfd_mips_elf_finish_dynamic_sections
10293 #define elf_backend_final_write_processing \
10294 _bfd_mips_elf_final_write_processing
10295 #define elf_backend_additional_program_headers \
10296 _bfd_mips_elf_additional_program_headers
10297 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
10298 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
10299 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
10300 #define elf_backend_copy_indirect_symbol \
10301 _bfd_mips_elf_copy_indirect_symbol
10302 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
10303 #define elf_backend_grok_prstatus _bfd_elf32_mips_grok_prstatus
10304 #define elf_backend_grok_psinfo _bfd_elf32_mips_grok_psinfo
10305 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
10307 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
10308 #define elf_backend_plt_header_size 0
10309 #define elf_backend_may_use_rel_p 1
10310 #define elf_backend_may_use_rela_p 0
10311 #define elf_backend_default_use_rela_p 0
10312 #define elf_backend_sign_extend_vma true
10314 #define elf_backend_discard_info _bfd_elf32_mips_discard_info
10315 #define elf_backend_ignore_discarded_relocs \
10316 _bfd_elf32_mips_ignore_discarded_relocs
10317 #define elf_backend_write_section _bfd_elf32_mips_write_section
10319 #define bfd_elf32_bfd_is_local_label_name \
10320 mips_elf_is_local_label_name
10321 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
10322 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
10323 #define bfd_elf32_bfd_link_hash_table_create \
10324 _bfd_mips_elf_link_hash_table_create
10325 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
10326 #define bfd_elf32_bfd_merge_private_bfd_data \
10327 _bfd_mips_elf_merge_private_bfd_data
10328 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
10329 #define bfd_elf32_bfd_print_private_bfd_data \
10330 _bfd_mips_elf_print_private_bfd_data
10332 /* Support for SGI-ish mips targets. */
10333 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
10334 #define TARGET_LITTLE_NAME "elf32-littlemips"
10335 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
10336 #define TARGET_BIG_NAME "elf32-bigmips"
10338 #include "elf32-target.h"
10340 /* Support for traditional mips targets. */
10341 #define INCLUDED_TARGET_FILE /* More a type of flag. */
10343 #undef TARGET_LITTLE_SYM
10344 #undef TARGET_LITTLE_NAME
10345 #undef TARGET_BIG_SYM
10346 #undef TARGET_BIG_NAME
10348 #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
10349 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
10350 #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
10351 #define TARGET_BIG_NAME "elf32-tradbigmips"
10353 /* Include the target file again for this target */
10354 #include "elf32-target.h"
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