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);
3174 /* Do we need to update the mach field? */
3175 if (old_mach == 0 && new_mach != 0)
3176 elf_elfheader (obfd)->e_flags |= new_mach;
3178 /* Do we need to update the ISA field? */
3179 if (new_isa > old_isa)
3181 elf_elfheader (obfd)->e_flags &= ~EF_MIPS_ARCH;
3182 elf_elfheader (obfd)->e_flags
3183 |= new_flags & EF_MIPS_ARCH;
3189 (*_bfd_error_handler)
3190 (_("%s: ISA mismatch (%d) with previous modules (%d)"),
3191 bfd_archive_filename (ibfd),
3192 elf_mips_mach (new_flags),
3193 elf_mips_mach (old_flags));
3197 new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
3198 old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
3201 /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
3202 does set EI_CLASS differently from any 32-bit ABI. */
3203 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
3204 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
3205 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
3207 /* Only error if both are set (to different values). */
3208 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
3209 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
3210 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
3212 (*_bfd_error_handler)
3213 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
3214 bfd_archive_filename (ibfd),
3215 elf_mips_abi_name (ibfd),
3216 elf_mips_abi_name (obfd));
3219 new_flags &= ~EF_MIPS_ABI;
3220 old_flags &= ~EF_MIPS_ABI;
3223 /* Warn about any other mismatches */
3224 if (new_flags != old_flags)
3226 (*_bfd_error_handler)
3227 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3228 bfd_archive_filename (ibfd), (unsigned long) new_flags,
3229 (unsigned long) old_flags);
3235 bfd_set_error (bfd_error_bad_value);
3243 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
3247 FILE *file = (FILE *) ptr;
3249 BFD_ASSERT (abfd != NULL && ptr != NULL);
3251 /* Print normal ELF private data. */
3252 _bfd_elf_print_private_bfd_data (abfd, ptr);
3254 /* xgettext:c-format */
3255 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3257 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
3258 fprintf (file, _(" [abi=O32]"));
3259 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
3260 fprintf (file, _(" [abi=O64]"));
3261 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
3262 fprintf (file, _(" [abi=EABI32]"));
3263 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
3264 fprintf (file, _(" [abi=EABI64]"));
3265 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
3266 fprintf (file, _(" [abi unknown]"));
3267 else if (ABI_N32_P (abfd))
3268 fprintf (file, _(" [abi=N32]"));
3269 else if (ABI_64_P (abfd))
3270 fprintf (file, _(" [abi=64]"));
3272 fprintf (file, _(" [no abi set]"));
3274 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
3275 fprintf (file, _(" [mips1]"));
3276 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
3277 fprintf (file, _(" [mips2]"));
3278 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
3279 fprintf (file, _(" [mips3]"));
3280 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
3281 fprintf (file, _(" [mips4]"));
3282 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
3283 fprintf (file, _ (" [mips5]"));
3284 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
3285 fprintf (file, _ (" [mips32]"));
3286 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
3287 fprintf (file, _ (" [mips64]"));
3289 fprintf (file, _(" [unknown ISA]"));
3291 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
3292 fprintf (file, _(" [32bitmode]"));
3294 fprintf (file, _(" [not 32bitmode]"));
3301 /* Handle a MIPS specific section when reading an object file. This
3302 is called when elfcode.h finds a section with an unknown type.
3303 This routine supports both the 32-bit and 64-bit ELF ABI.
3305 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
3309 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
3311 Elf_Internal_Shdr *hdr;
3316 /* There ought to be a place to keep ELF backend specific flags, but
3317 at the moment there isn't one. We just keep track of the
3318 sections by their name, instead. Fortunately, the ABI gives
3319 suggested names for all the MIPS specific sections, so we will
3320 probably get away with this. */
3321 switch (hdr->sh_type)
3323 case SHT_MIPS_LIBLIST:
3324 if (strcmp (name, ".liblist") != 0)
3328 if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
3331 case SHT_MIPS_CONFLICT:
3332 if (strcmp (name, ".conflict") != 0)
3335 case SHT_MIPS_GPTAB:
3336 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
3339 case SHT_MIPS_UCODE:
3340 if (strcmp (name, ".ucode") != 0)
3343 case SHT_MIPS_DEBUG:
3344 if (strcmp (name, ".mdebug") != 0)
3346 flags = SEC_DEBUGGING;
3348 case SHT_MIPS_REGINFO:
3349 if (strcmp (name, ".reginfo") != 0
3350 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
3352 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
3354 case SHT_MIPS_IFACE:
3355 if (strcmp (name, ".MIPS.interfaces") != 0)
3358 case SHT_MIPS_CONTENT:
3359 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
3362 case SHT_MIPS_OPTIONS:
3363 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
3366 case SHT_MIPS_DWARF:
3367 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
3370 case SHT_MIPS_SYMBOL_LIB:
3371 if (strcmp (name, ".MIPS.symlib") != 0)
3374 case SHT_MIPS_EVENTS:
3375 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
3376 && strncmp (name, ".MIPS.post_rel",
3377 sizeof ".MIPS.post_rel" - 1) != 0)
3384 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
3389 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
3390 (bfd_get_section_flags (abfd,
3396 /* FIXME: We should record sh_info for a .gptab section. */
3398 /* For a .reginfo section, set the gp value in the tdata information
3399 from the contents of this section. We need the gp value while
3400 processing relocs, so we just get it now. The .reginfo section
3401 is not used in the 64-bit MIPS ELF ABI. */
3402 if (hdr->sh_type == SHT_MIPS_REGINFO)
3404 Elf32_External_RegInfo ext;
3407 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
3409 (bfd_size_type) sizeof ext))
3411 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
3412 elf_gp (abfd) = s.ri_gp_value;
3415 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
3416 set the gp value based on what we find. We may see both
3417 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
3418 they should agree. */
3419 if (hdr->sh_type == SHT_MIPS_OPTIONS)
3421 bfd_byte *contents, *l, *lend;
3423 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
3424 if (contents == NULL)
3426 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
3427 (file_ptr) 0, hdr->sh_size))
3433 lend = contents + hdr->sh_size;
3434 while (l + sizeof (Elf_External_Options) <= lend)
3436 Elf_Internal_Options intopt;
3438 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3440 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3442 Elf64_Internal_RegInfo intreg;
3444 bfd_mips_elf64_swap_reginfo_in
3446 ((Elf64_External_RegInfo *)
3447 (l + sizeof (Elf_External_Options))),
3449 elf_gp (abfd) = intreg.ri_gp_value;
3451 else if (intopt.kind == ODK_REGINFO)
3453 Elf32_RegInfo intreg;
3455 bfd_mips_elf32_swap_reginfo_in
3457 ((Elf32_External_RegInfo *)
3458 (l + sizeof (Elf_External_Options))),
3460 elf_gp (abfd) = intreg.ri_gp_value;
3470 /* Set the correct type for a MIPS ELF section. We do this by the
3471 section name, which is a hack, but ought to work. This routine is
3472 used by both the 32-bit and the 64-bit ABI. */
3475 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
3477 Elf32_Internal_Shdr *hdr;
3480 register const char *name;
3482 name = bfd_get_section_name (abfd, sec);
3484 if (strcmp (name, ".liblist") == 0)
3486 hdr->sh_type = SHT_MIPS_LIBLIST;
3487 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
3488 /* The sh_link field is set in final_write_processing. */
3490 else if (strcmp (name, ".conflict") == 0)
3491 hdr->sh_type = SHT_MIPS_CONFLICT;
3492 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
3494 hdr->sh_type = SHT_MIPS_GPTAB;
3495 hdr->sh_entsize = sizeof (Elf32_External_gptab);
3496 /* The sh_info field is set in final_write_processing. */
3498 else if (strcmp (name, ".ucode") == 0)
3499 hdr->sh_type = SHT_MIPS_UCODE;
3500 else if (strcmp (name, ".mdebug") == 0)
3502 hdr->sh_type = SHT_MIPS_DEBUG;
3503 /* In a shared object on Irix 5.3, the .mdebug section has an
3504 entsize of 0. FIXME: Does this matter? */
3505 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
3506 hdr->sh_entsize = 0;
3508 hdr->sh_entsize = 1;
3510 else if (strcmp (name, ".reginfo") == 0)
3512 hdr->sh_type = SHT_MIPS_REGINFO;
3513 /* In a shared object on Irix 5.3, the .reginfo section has an
3514 entsize of 0x18. FIXME: Does this matter? */
3515 if (SGI_COMPAT (abfd))
3517 if ((abfd->flags & DYNAMIC) != 0)
3518 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3520 hdr->sh_entsize = 1;
3523 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
3525 else if (SGI_COMPAT (abfd)
3526 && (strcmp (name, ".hash") == 0
3527 || strcmp (name, ".dynamic") == 0
3528 || strcmp (name, ".dynstr") == 0))
3530 if (SGI_COMPAT (abfd))
3531 hdr->sh_entsize = 0;
3533 /* This isn't how the Irix 6 linker behaves. */
3534 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
3537 else if (strcmp (name, ".got") == 0
3538 || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
3539 || strcmp (name, ".sdata") == 0
3540 || strcmp (name, ".sbss") == 0
3541 || strcmp (name, ".lit4") == 0
3542 || strcmp (name, ".lit8") == 0)
3543 hdr->sh_flags |= SHF_MIPS_GPREL;
3544 else if (strcmp (name, ".MIPS.interfaces") == 0)
3546 hdr->sh_type = SHT_MIPS_IFACE;
3547 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3549 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
3551 hdr->sh_type = SHT_MIPS_CONTENT;
3552 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3553 /* The sh_info field is set in final_write_processing. */
3555 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3557 hdr->sh_type = SHT_MIPS_OPTIONS;
3558 hdr->sh_entsize = 1;
3559 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3561 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
3562 hdr->sh_type = SHT_MIPS_DWARF;
3563 else if (strcmp (name, ".MIPS.symlib") == 0)
3565 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
3566 /* The sh_link and sh_info fields are set in
3567 final_write_processing. */
3569 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
3570 || strncmp (name, ".MIPS.post_rel",
3571 sizeof ".MIPS.post_rel" - 1) == 0)
3573 hdr->sh_type = SHT_MIPS_EVENTS;
3574 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
3575 /* The sh_link field is set in final_write_processing. */
3577 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
3579 hdr->sh_type = SHT_MIPS_MSYM;
3580 hdr->sh_flags |= SHF_ALLOC;
3581 hdr->sh_entsize = 8;
3584 /* The generic elf_fake_sections will set up REL_HDR using the
3585 default kind of relocations. But, we may actually need both
3586 kinds of relocations, so we set up the second header here. */
3587 if ((sec->flags & SEC_RELOC) != 0)
3589 struct bfd_elf_section_data *esd;
3590 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
3592 esd = elf_section_data (sec);
3593 BFD_ASSERT (esd->rel_hdr2 == NULL);
3594 esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
3597 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
3598 !elf_section_data (sec)->use_rela_p);
3604 /* Given a BFD section, try to locate the corresponding ELF section
3605 index. This is used by both the 32-bit and the 64-bit ABI.
3606 Actually, it's not clear to me that the 64-bit ABI supports these,
3607 but for non-PIC objects we will certainly want support for at least
3608 the .scommon section. */
3611 _bfd_mips_elf_section_from_bfd_section (abfd, sec, retval)
3612 bfd *abfd ATTRIBUTE_UNUSED;
3616 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3618 *retval = SHN_MIPS_SCOMMON;
3621 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
3623 *retval = SHN_MIPS_ACOMMON;
3629 /* When are writing out the .options or .MIPS.options section,
3630 remember the bytes we are writing out, so that we can install the
3631 GP value in the section_processing routine. */
3634 _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
3639 bfd_size_type count;
3641 if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
3645 if (elf_section_data (section) == NULL)
3647 bfd_size_type amt = sizeof (struct bfd_elf_section_data);
3648 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3649 if (elf_section_data (section) == NULL)
3652 c = (bfd_byte *) elf_section_data (section)->tdata;
3657 if (section->_cooked_size != 0)
3658 size = section->_cooked_size;
3660 size = section->_raw_size;
3661 c = (bfd_byte *) bfd_zalloc (abfd, size);
3664 elf_section_data (section)->tdata = (PTR) c;
3667 memcpy (c + offset, location, (size_t) count);
3670 return _bfd_elf_set_section_contents (abfd, section, location, offset,
3674 /* Work over a section just before writing it out. This routine is
3675 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
3676 sections that need the SHF_MIPS_GPREL flag by name; there has to be
3680 _bfd_mips_elf_section_processing (abfd, hdr)
3682 Elf_Internal_Shdr *hdr;
3684 if (hdr->sh_type == SHT_MIPS_REGINFO
3685 && hdr->sh_size > 0)
3689 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
3690 BFD_ASSERT (hdr->contents == NULL);
3693 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
3696 H_PUT_32 (abfd, elf_gp (abfd), buf);
3697 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3701 if (hdr->sh_type == SHT_MIPS_OPTIONS
3702 && hdr->bfd_section != NULL
3703 && elf_section_data (hdr->bfd_section) != NULL
3704 && elf_section_data (hdr->bfd_section)->tdata != NULL)
3706 bfd_byte *contents, *l, *lend;
3708 /* We stored the section contents in the elf_section_data tdata
3709 field in the set_section_contents routine. We save the
3710 section contents so that we don't have to read them again.
3711 At this point we know that elf_gp is set, so we can look
3712 through the section contents to see if there is an
3713 ODK_REGINFO structure. */
3715 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
3717 lend = contents + hdr->sh_size;
3718 while (l + sizeof (Elf_External_Options) <= lend)
3720 Elf_Internal_Options intopt;
3722 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
3724 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
3731 + sizeof (Elf_External_Options)
3732 + (sizeof (Elf64_External_RegInfo) - 8)),
3735 H_PUT_64 (abfd, elf_gp (abfd), buf);
3736 if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8)
3739 else if (intopt.kind == ODK_REGINFO)
3746 + sizeof (Elf_External_Options)
3747 + (sizeof (Elf32_External_RegInfo) - 4)),
3750 H_PUT_32 (abfd, elf_gp (abfd), buf);
3751 if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
3758 if (hdr->bfd_section != NULL)
3760 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3762 if (strcmp (name, ".sdata") == 0
3763 || strcmp (name, ".lit8") == 0
3764 || strcmp (name, ".lit4") == 0)
3766 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3767 hdr->sh_type = SHT_PROGBITS;
3769 else if (strcmp (name, ".sbss") == 0)
3771 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3772 hdr->sh_type = SHT_NOBITS;
3774 else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
3776 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3777 hdr->sh_type = SHT_PROGBITS;
3779 else if (strcmp (name, ".compact_rel") == 0)
3782 hdr->sh_type = SHT_PROGBITS;
3784 else if (strcmp (name, ".rtproc") == 0)
3786 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3788 unsigned int adjust;
3790 adjust = hdr->sh_size % hdr->sh_addralign;
3792 hdr->sh_size += hdr->sh_addralign - adjust;
3800 /* MIPS ELF uses two common sections. One is the usual one, and the
3801 other is for small objects. All the small objects are kept
3802 together, and then referenced via the gp pointer, which yields
3803 faster assembler code. This is what we use for the small common
3804 section. This approach is copied from ecoff.c. */
3805 static asection mips_elf_scom_section;
3806 static asymbol mips_elf_scom_symbol;
3807 static asymbol *mips_elf_scom_symbol_ptr;
3809 /* MIPS ELF also uses an acommon section, which represents an
3810 allocated common symbol which may be overridden by a
3811 definition in a shared library. */
3812 static asection mips_elf_acom_section;
3813 static asymbol mips_elf_acom_symbol;
3814 static asymbol *mips_elf_acom_symbol_ptr;
3816 /* Handle the special MIPS section numbers that a symbol may use.
3817 This is used for both the 32-bit and the 64-bit ABI. */
3820 _bfd_mips_elf_symbol_processing (abfd, asym)
3824 elf_symbol_type *elfsym;
3826 elfsym = (elf_symbol_type *) asym;
3827 switch (elfsym->internal_elf_sym.st_shndx)
3829 case SHN_MIPS_ACOMMON:
3830 /* This section is used in a dynamically linked executable file.
3831 It is an allocated common section. The dynamic linker can
3832 either resolve these symbols to something in a shared
3833 library, or it can just leave them here. For our purposes,
3834 we can consider these symbols to be in a new section. */
3835 if (mips_elf_acom_section.name == NULL)
3837 /* Initialize the acommon section. */
3838 mips_elf_acom_section.name = ".acommon";
3839 mips_elf_acom_section.flags = SEC_ALLOC;
3840 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3841 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3842 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3843 mips_elf_acom_symbol.name = ".acommon";
3844 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3845 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3846 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3848 asym->section = &mips_elf_acom_section;
3852 /* Common symbols less than the GP size are automatically
3853 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3854 if (asym->value > elf_gp_size (abfd)
3855 || IRIX_COMPAT (abfd) == ict_irix6)
3858 case SHN_MIPS_SCOMMON:
3859 if (mips_elf_scom_section.name == NULL)
3861 /* Initialize the small common section. */
3862 mips_elf_scom_section.name = ".scommon";
3863 mips_elf_scom_section.flags = SEC_IS_COMMON;
3864 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3865 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3866 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3867 mips_elf_scom_symbol.name = ".scommon";
3868 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3869 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3870 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3872 asym->section = &mips_elf_scom_section;
3873 asym->value = elfsym->internal_elf_sym.st_size;
3876 case SHN_MIPS_SUNDEFINED:
3877 asym->section = bfd_und_section_ptr;
3880 #if 0 /* for SGI_COMPAT */
3882 asym->section = mips_elf_text_section_ptr;
3886 asym->section = mips_elf_data_section_ptr;
3892 /* When creating an Irix 5 executable, we need REGINFO and RTPROC
3896 _bfd_mips_elf_additional_program_headers (abfd)
3902 /* See if we need a PT_MIPS_REGINFO segment. */
3903 s = bfd_get_section_by_name (abfd, ".reginfo");
3904 if (s && (s->flags & SEC_LOAD))
3907 /* See if we need a PT_MIPS_OPTIONS segment. */
3908 if (IRIX_COMPAT (abfd) == ict_irix6
3909 && bfd_get_section_by_name (abfd,
3910 MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
3913 /* See if we need a PT_MIPS_RTPROC segment. */
3914 if (IRIX_COMPAT (abfd) == ict_irix5
3915 && bfd_get_section_by_name (abfd, ".dynamic")
3916 && bfd_get_section_by_name (abfd, ".mdebug"))
3922 /* Modify the segment map for an Irix 5 executable. */
3925 _bfd_mips_elf_modify_segment_map (abfd)
3929 struct elf_segment_map *m, **pm;
3932 /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
3934 s = bfd_get_section_by_name (abfd, ".reginfo");
3935 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3937 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3938 if (m->p_type == PT_MIPS_REGINFO)
3943 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3947 m->p_type = PT_MIPS_REGINFO;
3951 /* We want to put it after the PHDR and INTERP segments. */
3952 pm = &elf_tdata (abfd)->segment_map;
3954 && ((*pm)->p_type == PT_PHDR
3955 || (*pm)->p_type == PT_INTERP))
3963 /* For IRIX 6, we don't have .mdebug sections, nor does anything but
3964 .dynamic end up in PT_DYNAMIC. However, we do have to insert a
3965 PT_OPTIONS segement immediately following the program header
3967 if (IRIX_COMPAT (abfd) == ict_irix6)
3969 for (s = abfd->sections; s; s = s->next)
3970 if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
3975 struct elf_segment_map *options_segment;
3977 /* Usually, there's a program header table. But, sometimes
3978 there's not (like when running the `ld' testsuite). So,
3979 if there's no program header table, we just put the
3980 options segement at the end. */
3981 for (pm = &elf_tdata (abfd)->segment_map;
3984 if ((*pm)->p_type == PT_PHDR)
3987 amt = sizeof (struct elf_segment_map);
3988 options_segment = bfd_zalloc (abfd, amt);
3989 options_segment->next = *pm;
3990 options_segment->p_type = PT_MIPS_OPTIONS;
3991 options_segment->p_flags = PF_R;
3992 options_segment->p_flags_valid = true;
3993 options_segment->count = 1;
3994 options_segment->sections[0] = s;
3995 *pm = options_segment;
4000 if (IRIX_COMPAT (abfd) == ict_irix5)
4002 /* If there are .dynamic and .mdebug sections, we make a room
4003 for the RTPROC header. FIXME: Rewrite without section names. */
4004 if (bfd_get_section_by_name (abfd, ".interp") == NULL
4005 && bfd_get_section_by_name (abfd, ".dynamic") != NULL
4006 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
4008 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4009 if (m->p_type == PT_MIPS_RTPROC)
4014 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4018 m->p_type = PT_MIPS_RTPROC;
4020 s = bfd_get_section_by_name (abfd, ".rtproc");
4025 m->p_flags_valid = 1;
4033 /* We want to put it after the DYNAMIC segment. */
4034 pm = &elf_tdata (abfd)->segment_map;
4035 while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
4045 /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
4046 .dynstr, .dynsym, and .hash sections, and everything in
4048 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
4050 if ((*pm)->p_type == PT_DYNAMIC)
4053 if (m != NULL && IRIX_COMPAT (abfd) == ict_none)
4055 /* For a normal mips executable the permissions for the PT_DYNAMIC
4056 segment are read, write and execute. We do that here since
4057 the code in elf.c sets only the read permission. This matters
4058 sometimes for the dynamic linker. */
4059 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
4061 m->p_flags = PF_R | PF_W | PF_X;
4062 m->p_flags_valid = 1;
4066 && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
4068 static const char *sec_names[] =
4070 ".dynamic", ".dynstr", ".dynsym", ".hash"
4074 struct elf_segment_map *n;
4078 for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
4080 s = bfd_get_section_by_name (abfd, sec_names[i]);
4081 if (s != NULL && (s->flags & SEC_LOAD) != 0)
4087 sz = s->_cooked_size;
4090 if (high < s->vma + sz)
4096 for (s = abfd->sections; s != NULL; s = s->next)
4097 if ((s->flags & SEC_LOAD) != 0
4100 + (s->_cooked_size !=
4101 0 ? s->_cooked_size : s->_raw_size)) <= high))
4104 amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *);
4105 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4112 for (s = abfd->sections; s != NULL; s = s->next)
4114 if ((s->flags & SEC_LOAD) != 0
4117 + (s->_cooked_size != 0 ?
4118 s->_cooked_size : s->_raw_size)) <= high))
4132 /* The structure of the runtime procedure descriptor created by the
4133 loader for use by the static exception system. */
4135 typedef struct runtime_pdr {
4136 bfd_vma adr; /* memory address of start of procedure */
4137 long regmask; /* save register mask */
4138 long regoffset; /* save register offset */
4139 long fregmask; /* save floating point register mask */
4140 long fregoffset; /* save floating point register offset */
4141 long frameoffset; /* frame size */
4142 short framereg; /* frame pointer register */
4143 short pcreg; /* offset or reg of return pc */
4144 long irpss; /* index into the runtime string table */
4146 struct exception_info *exception_info;/* pointer to exception array */
4148 #define cbRPDR sizeof (RPDR)
4149 #define rpdNil ((pRPDR) 0)
4151 /* Swap RPDR (runtime procedure table entry) for output. */
4153 static void ecoff_swap_rpdr_out
4154 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
4157 ecoff_swap_rpdr_out (abfd, in, ex)
4160 struct rpdr_ext *ex;
4162 /* ECOFF_PUT_OFF was defined in ecoffswap.h. */
4163 ECOFF_PUT_OFF (abfd, in->adr, ex->p_adr);
4164 H_PUT_32 (abfd, in->regmask, ex->p_regmask);
4165 H_PUT_32 (abfd, in->regoffset, ex->p_regoffset);
4166 H_PUT_32 (abfd, in->fregmask, ex->p_fregmask);
4167 H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset);
4168 H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset);
4170 H_PUT_16 (abfd, in->framereg, ex->p_framereg);
4171 H_PUT_16 (abfd, in->pcreg, ex->p_pcreg);
4173 H_PUT_32 (abfd, in->irpss, ex->p_irpss);
4175 ECOFF_PUT_OFF (abfd, in->exception_info, ex->p_exception_info);
4179 /* Read ECOFF debugging information from a .mdebug section into a
4180 ecoff_debug_info structure. */
4183 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
4186 struct ecoff_debug_info *debug;
4189 const struct ecoff_debug_swap *swap;
4190 char *ext_hdr = NULL;
4192 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4193 memset (debug, 0, sizeof (*debug));
4195 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
4196 if (ext_hdr == NULL && swap->external_hdr_size != 0)
4199 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
4200 swap->external_hdr_size)
4204 symhdr = &debug->symbolic_header;
4205 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
4207 /* The symbolic header contains absolute file offsets and sizes to
4209 #define READ(ptr, offset, count, size, type) \
4210 if (symhdr->count == 0) \
4211 debug->ptr = NULL; \
4214 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
4215 debug->ptr = (type) bfd_malloc (amt); \
4216 if (debug->ptr == NULL) \
4217 goto error_return; \
4218 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
4219 || bfd_bread (debug->ptr, amt, abfd) != amt) \
4220 goto error_return; \
4223 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
4224 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
4225 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
4226 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
4227 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
4228 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
4230 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
4231 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
4232 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
4233 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
4234 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
4238 debug->adjust = NULL;
4243 if (ext_hdr != NULL)
4245 if (debug->line != NULL)
4247 if (debug->external_dnr != NULL)
4248 free (debug->external_dnr);
4249 if (debug->external_pdr != NULL)
4250 free (debug->external_pdr);
4251 if (debug->external_sym != NULL)
4252 free (debug->external_sym);
4253 if (debug->external_opt != NULL)
4254 free (debug->external_opt);
4255 if (debug->external_aux != NULL)
4256 free (debug->external_aux);
4257 if (debug->ss != NULL)
4259 if (debug->ssext != NULL)
4260 free (debug->ssext);
4261 if (debug->external_fdr != NULL)
4262 free (debug->external_fdr);
4263 if (debug->external_rfd != NULL)
4264 free (debug->external_rfd);
4265 if (debug->external_ext != NULL)
4266 free (debug->external_ext);
4270 /* MIPS ELF local labels start with '$', not 'L'. */
4273 mips_elf_is_local_label_name (abfd, name)
4280 /* On Irix 6, the labels go back to starting with '.', so we accept
4281 the generic ELF local label syntax as well. */
4282 return _bfd_elf_is_local_label_name (abfd, name);
4285 /* MIPS ELF uses a special find_nearest_line routine in order the
4286 handle the ECOFF debugging information. */
4288 struct mips_elf_find_line
4290 struct ecoff_debug_info d;
4291 struct ecoff_find_line i;
4295 _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
4296 functionname_ptr, line_ptr)
4301 const char **filename_ptr;
4302 const char **functionname_ptr;
4303 unsigned int *line_ptr;
4307 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4308 filename_ptr, functionname_ptr,
4312 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4313 filename_ptr, functionname_ptr,
4315 (unsigned) (ABI_64_P (abfd) ? 8 : 0),
4316 &elf_tdata (abfd)->dwarf2_find_line_info))
4319 msec = bfd_get_section_by_name (abfd, ".mdebug");
4323 struct mips_elf_find_line *fi;
4324 const struct ecoff_debug_swap * const swap =
4325 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4327 /* If we are called during a link, mips_elf_final_link may have
4328 cleared the SEC_HAS_CONTENTS field. We force it back on here
4329 if appropriate (which it normally will be). */
4330 origflags = msec->flags;
4331 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
4332 msec->flags |= SEC_HAS_CONTENTS;
4334 fi = elf_tdata (abfd)->find_line_info;
4337 bfd_size_type external_fdr_size;
4340 struct fdr *fdr_ptr;
4341 bfd_size_type amt = sizeof (struct mips_elf_find_line);
4343 fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
4346 msec->flags = origflags;
4350 if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
4352 msec->flags = origflags;
4356 /* Swap in the FDR information. */
4357 amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
4358 fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
4359 if (fi->d.fdr == NULL)
4361 msec->flags = origflags;
4364 external_fdr_size = swap->external_fdr_size;
4365 fdr_ptr = fi->d.fdr;
4366 fraw_src = (char *) fi->d.external_fdr;
4367 fraw_end = (fraw_src
4368 + fi->d.symbolic_header.ifdMax * external_fdr_size);
4369 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
4370 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
4372 elf_tdata (abfd)->find_line_info = fi;
4374 /* Note that we don't bother to ever free this information.
4375 find_nearest_line is either called all the time, as in
4376 objdump -l, so the information should be saved, or it is
4377 rarely called, as in ld error messages, so the memory
4378 wasted is unimportant. Still, it would probably be a
4379 good idea for free_cached_info to throw it away. */
4382 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
4383 &fi->i, filename_ptr, functionname_ptr,
4386 msec->flags = origflags;
4390 msec->flags = origflags;
4393 /* Fall back on the generic ELF find_nearest_line routine. */
4395 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
4396 filename_ptr, functionname_ptr,
4400 /* The mips16 compiler uses a couple of special sections to handle
4401 floating point arguments.
4403 Section names that look like .mips16.fn.FNNAME contain stubs that
4404 copy floating point arguments from the fp regs to the gp regs and
4405 then jump to FNNAME. If any 32 bit function calls FNNAME, the
4406 call should be redirected to the stub instead. If no 32 bit
4407 function calls FNNAME, the stub should be discarded. We need to
4408 consider any reference to the function, not just a call, because
4409 if the address of the function is taken we will need the stub,
4410 since the address might be passed to a 32 bit function.
4412 Section names that look like .mips16.call.FNNAME contain stubs
4413 that copy floating point arguments from the gp regs to the fp
4414 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
4415 then any 16 bit function that calls FNNAME should be redirected
4416 to the stub instead. If FNNAME is not a 32 bit function, the
4417 stub should be discarded.
4419 .mips16.call.fp.FNNAME sections are similar, but contain stubs
4420 which call FNNAME and then copy the return value from the fp regs
4421 to the gp regs. These stubs store the return value in $18 while
4422 calling FNNAME; any function which might call one of these stubs
4423 must arrange to save $18 around the call. (This case is not
4424 needed for 32 bit functions that call 16 bit functions, because
4425 16 bit functions always return floating point values in both
4428 Note that in all cases FNNAME might be defined statically.
4429 Therefore, FNNAME is not used literally. Instead, the relocation
4430 information will indicate which symbol the section is for.
4432 We record any stubs that we find in the symbol table. */
4434 #define FN_STUB ".mips16.fn."
4435 #define CALL_STUB ".mips16.call."
4436 #define CALL_FP_STUB ".mips16.call.fp."
4438 /* MIPS ELF linker hash table. */
4440 struct mips_elf_link_hash_table
4442 struct elf_link_hash_table root;
4444 /* We no longer use this. */
4445 /* String section indices for the dynamic section symbols. */
4446 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
4448 /* The number of .rtproc entries. */
4449 bfd_size_type procedure_count;
4450 /* The size of the .compact_rel section (if SGI_COMPAT). */
4451 bfd_size_type compact_rel_size;
4452 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
4453 entry is set to the address of __rld_obj_head as in Irix 5. */
4454 boolean use_rld_obj_head;
4455 /* This is the value of the __rld_map or __rld_obj_head symbol. */
4457 /* This is set if we see any mips16 stub sections. */
4458 boolean mips16_stubs_seen;
4461 /* Look up an entry in a MIPS ELF linker hash table. */
4463 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
4464 ((struct mips_elf_link_hash_entry *) \
4465 elf_link_hash_lookup (&(table)->root, (string), (create), \
4468 /* Traverse a MIPS ELF linker hash table. */
4470 #define mips_elf_link_hash_traverse(table, func, info) \
4471 (elf_link_hash_traverse \
4473 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
4476 /* Get the MIPS ELF linker hash table from a link_info structure. */
4478 #define mips_elf_hash_table(p) \
4479 ((struct mips_elf_link_hash_table *) ((p)->hash))
4481 static boolean mips_elf_output_extsym
4482 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
4484 /* Create an entry in a MIPS ELF linker hash table. */
4486 static struct bfd_hash_entry *
4487 mips_elf_link_hash_newfunc (entry, table, string)
4488 struct bfd_hash_entry *entry;
4489 struct bfd_hash_table *table;
4492 struct mips_elf_link_hash_entry *ret =
4493 (struct mips_elf_link_hash_entry *) entry;
4495 /* Allocate the structure if it has not already been allocated by a
4497 if (ret == (struct mips_elf_link_hash_entry *) NULL)
4498 ret = ((struct mips_elf_link_hash_entry *)
4499 bfd_hash_allocate (table,
4500 sizeof (struct mips_elf_link_hash_entry)));
4501 if (ret == (struct mips_elf_link_hash_entry *) NULL)
4502 return (struct bfd_hash_entry *) ret;
4504 /* Call the allocation method of the superclass. */
4505 ret = ((struct mips_elf_link_hash_entry *)
4506 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
4508 if (ret != (struct mips_elf_link_hash_entry *) NULL)
4510 /* Set local fields. */
4511 memset (&ret->esym, 0, sizeof (EXTR));
4512 /* We use -2 as a marker to indicate that the information has
4513 not been set. -1 means there is no associated ifd. */
4515 ret->possibly_dynamic_relocs = 0;
4516 ret->readonly_reloc = false;
4517 ret->min_dyn_reloc_index = 0;
4518 ret->no_fn_stub = false;
4519 ret->fn_stub = NULL;
4520 ret->need_fn_stub = false;
4521 ret->call_stub = NULL;
4522 ret->call_fp_stub = NULL;
4525 return (struct bfd_hash_entry *) ret;
4529 _bfd_mips_elf_hide_symbol (info, entry, force_local)
4530 struct bfd_link_info *info;
4531 struct elf_link_hash_entry *entry;
4532 boolean force_local;
4536 struct mips_got_info *g;
4537 struct mips_elf_link_hash_entry *h;
4538 h = (struct mips_elf_link_hash_entry *) entry;
4539 dynobj = elf_hash_table (info)->dynobj;
4540 got = bfd_get_section_by_name (dynobj, ".got");
4541 g = (struct mips_got_info *) elf_section_data (got)->tdata;
4543 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
4545 /* FIXME: Do we allocate too much GOT space here? */
4547 got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
4550 /* Create a MIPS ELF linker hash table. */
4552 struct bfd_link_hash_table *
4553 _bfd_mips_elf_link_hash_table_create (abfd)
4556 struct mips_elf_link_hash_table *ret;
4557 bfd_size_type amt = sizeof (struct mips_elf_link_hash_table);
4559 ret = (struct mips_elf_link_hash_table *) bfd_alloc (abfd, amt);
4560 if (ret == (struct mips_elf_link_hash_table *) NULL)
4563 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
4564 mips_elf_link_hash_newfunc))
4566 bfd_release (abfd, ret);
4571 /* We no longer use this. */
4572 for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
4573 ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
4575 ret->procedure_count = 0;
4576 ret->compact_rel_size = 0;
4577 ret->use_rld_obj_head = false;
4579 ret->mips16_stubs_seen = false;
4581 return &ret->root.root;
4584 /* Hook called by the linker routine which adds symbols from an object
4585 file. We must handle the special MIPS section numbers here. */
4588 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
4590 struct bfd_link_info *info;
4591 const Elf_Internal_Sym *sym;
4593 flagword *flagsp ATTRIBUTE_UNUSED;
4597 if (SGI_COMPAT (abfd)
4598 && (abfd->flags & DYNAMIC) != 0
4599 && strcmp (*namep, "_rld_new_interface") == 0)
4601 /* Skip Irix 5 rld entry name. */
4606 switch (sym->st_shndx)
4609 /* Common symbols less than the GP size are automatically
4610 treated as SHN_MIPS_SCOMMON symbols. */
4611 if (sym->st_size > elf_gp_size (abfd)
4612 || IRIX_COMPAT (abfd) == ict_irix6)
4615 case SHN_MIPS_SCOMMON:
4616 *secp = bfd_make_section_old_way (abfd, ".scommon");
4617 (*secp)->flags |= SEC_IS_COMMON;
4618 *valp = sym->st_size;
4622 /* This section is used in a shared object. */
4623 if (elf_tdata (abfd)->elf_text_section == NULL)
4625 asymbol *elf_text_symbol;
4626 asection *elf_text_section;
4627 bfd_size_type amt = sizeof (asection);
4629 elf_text_section = bfd_zalloc (abfd, amt);
4630 if (elf_text_section == NULL)
4633 amt = sizeof (asymbol);
4634 elf_text_symbol = bfd_zalloc (abfd, amt);
4635 if (elf_text_symbol == NULL)
4638 /* Initialize the section. */
4640 elf_tdata (abfd)->elf_text_section = elf_text_section;
4641 elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
4643 elf_text_section->symbol = elf_text_symbol;
4644 elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
4646 elf_text_section->name = ".text";
4647 elf_text_section->flags = SEC_NO_FLAGS;
4648 elf_text_section->output_section = NULL;
4649 elf_text_section->owner = abfd;
4650 elf_text_symbol->name = ".text";
4651 elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
4652 elf_text_symbol->section = elf_text_section;
4654 /* This code used to do *secp = bfd_und_section_ptr if
4655 info->shared. I don't know why, and that doesn't make sense,
4656 so I took it out. */
4657 *secp = elf_tdata (abfd)->elf_text_section;
4660 case SHN_MIPS_ACOMMON:
4661 /* Fall through. XXX Can we treat this as allocated data? */
4663 /* This section is used in a shared object. */
4664 if (elf_tdata (abfd)->elf_data_section == NULL)
4666 asymbol *elf_data_symbol;
4667 asection *elf_data_section;
4668 bfd_size_type amt = sizeof (asection);
4670 elf_data_section = bfd_zalloc (abfd, amt);
4671 if (elf_data_section == NULL)
4674 amt = sizeof (asymbol);
4675 elf_data_symbol = bfd_zalloc (abfd, amt);
4676 if (elf_data_symbol == NULL)
4679 /* Initialize the section. */
4681 elf_tdata (abfd)->elf_data_section = elf_data_section;
4682 elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
4684 elf_data_section->symbol = elf_data_symbol;
4685 elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
4687 elf_data_section->name = ".data";
4688 elf_data_section->flags = SEC_NO_FLAGS;
4689 elf_data_section->output_section = NULL;
4690 elf_data_section->owner = abfd;
4691 elf_data_symbol->name = ".data";
4692 elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
4693 elf_data_symbol->section = elf_data_section;
4695 /* This code used to do *secp = bfd_und_section_ptr if
4696 info->shared. I don't know why, and that doesn't make sense,
4697 so I took it out. */
4698 *secp = elf_tdata (abfd)->elf_data_section;
4701 case SHN_MIPS_SUNDEFINED:
4702 *secp = bfd_und_section_ptr;
4706 if (SGI_COMPAT (abfd)
4708 && info->hash->creator == abfd->xvec
4709 && strcmp (*namep, "__rld_obj_head") == 0)
4711 struct elf_link_hash_entry *h;
4713 /* Mark __rld_obj_head as dynamic. */
4715 if (! (_bfd_generic_link_add_one_symbol
4716 (info, abfd, *namep, BSF_GLOBAL, *secp,
4717 (bfd_vma) *valp, (const char *) NULL, false,
4718 get_elf_backend_data (abfd)->collect,
4719 (struct bfd_link_hash_entry **) &h)))
4721 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4722 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4723 h->type = STT_OBJECT;
4725 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4728 mips_elf_hash_table (info)->use_rld_obj_head = true;
4731 /* If this is a mips16 text symbol, add 1 to the value to make it
4732 odd. This will cause something like .word SYM to come up with
4733 the right value when it is loaded into the PC. */
4734 if (sym->st_other == STO_MIPS16)
4740 /* Structure used to pass information to mips_elf_output_extsym. */
4745 struct bfd_link_info *info;
4746 struct ecoff_debug_info *debug;
4747 const struct ecoff_debug_swap *swap;
4751 /* This routine is used to write out ECOFF debugging external symbol
4752 information. It is called via mips_elf_link_hash_traverse. The
4753 ECOFF external symbol information must match the ELF external
4754 symbol information. Unfortunately, at this point we don't know
4755 whether a symbol is required by reloc information, so the two
4756 tables may wind up being different. We must sort out the external
4757 symbol information before we can set the final size of the .mdebug
4758 section, and we must set the size of the .mdebug section before we
4759 can relocate any sections, and we can't know which symbols are
4760 required by relocation until we relocate the sections.
4761 Fortunately, it is relatively unlikely that any symbol will be
4762 stripped but required by a reloc. In particular, it can not happen
4763 when generating a final executable. */
4766 mips_elf_output_extsym (h, data)
4767 struct mips_elf_link_hash_entry *h;
4770 struct extsym_info *einfo = (struct extsym_info *) data;
4772 asection *sec, *output_section;
4774 if (h->root.indx == -2)
4776 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4777 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
4778 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4779 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
4781 else if (einfo->info->strip == strip_all
4782 || (einfo->info->strip == strip_some
4783 && bfd_hash_lookup (einfo->info->keep_hash,
4784 h->root.root.root.string,
4785 false, false) == NULL))
4793 if (h->esym.ifd == -2)
4796 h->esym.cobol_main = 0;
4797 h->esym.weakext = 0;
4798 h->esym.reserved = 0;
4799 h->esym.ifd = ifdNil;
4800 h->esym.asym.value = 0;
4801 h->esym.asym.st = stGlobal;
4803 if (h->root.root.type == bfd_link_hash_undefined
4804 || h->root.root.type == bfd_link_hash_undefweak)
4808 /* Use undefined class. Also, set class and type for some
4810 name = h->root.root.root.string;
4811 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
4812 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
4814 h->esym.asym.sc = scData;
4815 h->esym.asym.st = stLabel;
4816 h->esym.asym.value = 0;
4818 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
4820 h->esym.asym.sc = scAbs;
4821 h->esym.asym.st = stLabel;
4822 h->esym.asym.value =
4823 mips_elf_hash_table (einfo->info)->procedure_count;
4825 else if (strcmp (name, "_gp_disp") == 0)
4827 h->esym.asym.sc = scAbs;
4828 h->esym.asym.st = stLabel;
4829 h->esym.asym.value = elf_gp (einfo->abfd);
4832 h->esym.asym.sc = scUndefined;
4834 else if (h->root.root.type != bfd_link_hash_defined
4835 && h->root.root.type != bfd_link_hash_defweak)
4836 h->esym.asym.sc = scAbs;
4841 sec = h->root.root.u.def.section;
4842 output_section = sec->output_section;
4844 /* When making a shared library and symbol h is the one from
4845 the another shared library, OUTPUT_SECTION may be null. */
4846 if (output_section == NULL)
4847 h->esym.asym.sc = scUndefined;
4850 name = bfd_section_name (output_section->owner, output_section);
4852 if (strcmp (name, ".text") == 0)
4853 h->esym.asym.sc = scText;
4854 else if (strcmp (name, ".data") == 0)
4855 h->esym.asym.sc = scData;
4856 else if (strcmp (name, ".sdata") == 0)
4857 h->esym.asym.sc = scSData;
4858 else if (strcmp (name, ".rodata") == 0
4859 || strcmp (name, ".rdata") == 0)
4860 h->esym.asym.sc = scRData;
4861 else if (strcmp (name, ".bss") == 0)
4862 h->esym.asym.sc = scBss;
4863 else if (strcmp (name, ".sbss") == 0)
4864 h->esym.asym.sc = scSBss;
4865 else if (strcmp (name, ".init") == 0)
4866 h->esym.asym.sc = scInit;
4867 else if (strcmp (name, ".fini") == 0)
4868 h->esym.asym.sc = scFini;
4870 h->esym.asym.sc = scAbs;
4874 h->esym.asym.reserved = 0;
4875 h->esym.asym.index = indexNil;
4878 if (h->root.root.type == bfd_link_hash_common)
4879 h->esym.asym.value = h->root.root.u.c.size;
4880 else if (h->root.root.type == bfd_link_hash_defined
4881 || h->root.root.type == bfd_link_hash_defweak)
4883 if (h->esym.asym.sc == scCommon)
4884 h->esym.asym.sc = scBss;
4885 else if (h->esym.asym.sc == scSCommon)
4886 h->esym.asym.sc = scSBss;
4888 sec = h->root.root.u.def.section;
4889 output_section = sec->output_section;
4890 if (output_section != NULL)
4891 h->esym.asym.value = (h->root.root.u.def.value
4892 + sec->output_offset
4893 + output_section->vma);
4895 h->esym.asym.value = 0;
4897 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4899 struct mips_elf_link_hash_entry *hd = h;
4900 boolean no_fn_stub = h->no_fn_stub;
4902 while (hd->root.root.type == bfd_link_hash_indirect)
4904 hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link;
4905 no_fn_stub = no_fn_stub || hd->no_fn_stub;
4910 /* Set type and value for a symbol with a function stub. */
4911 h->esym.asym.st = stProc;
4912 sec = hd->root.root.u.def.section;
4914 h->esym.asym.value = 0;
4917 output_section = sec->output_section;
4918 if (output_section != NULL)
4919 h->esym.asym.value = (hd->root.plt.offset
4920 + sec->output_offset
4921 + output_section->vma);
4923 h->esym.asym.value = 0;
4931 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
4932 h->root.root.root.string,
4935 einfo->failed = true;
4942 /* Create a runtime procedure table from the .mdebug section. */
4945 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
4948 struct bfd_link_info *info;
4950 struct ecoff_debug_info *debug;
4952 const struct ecoff_debug_swap *swap;
4953 HDRR *hdr = &debug->symbolic_header;
4955 struct rpdr_ext *erp;
4957 struct pdr_ext *epdr;
4958 struct sym_ext *esym;
4962 bfd_size_type count;
4963 unsigned long sindex;
4967 const char *no_name_func = _("static procedure (no name)");
4975 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4977 sindex = strlen (no_name_func) + 1;
4978 count = hdr->ipdMax;
4981 size = swap->external_pdr_size;
4983 epdr = (struct pdr_ext *) bfd_malloc (size * count);
4987 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
4990 size = sizeof (RPDR);
4991 rp = rpdr = (RPDR *) bfd_malloc (size * count);
4995 size = sizeof (char *);
4996 sv = (char **) bfd_malloc (size * count);
5000 count = hdr->isymMax;
5001 size = swap->external_sym_size;
5002 esym = (struct sym_ext *) bfd_malloc (size * count);
5006 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
5009 count = hdr->issMax;
5010 ss = (char *) bfd_malloc (count);
5013 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
5016 count = hdr->ipdMax;
5017 for (i = 0; i < (unsigned long) count; i++, rp++)
5019 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
5020 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
5021 rp->adr = sym.value;
5022 rp->regmask = pdr.regmask;
5023 rp->regoffset = pdr.regoffset;
5024 rp->fregmask = pdr.fregmask;
5025 rp->fregoffset = pdr.fregoffset;
5026 rp->frameoffset = pdr.frameoffset;
5027 rp->framereg = pdr.framereg;
5028 rp->pcreg = pdr.pcreg;
5030 sv[i] = ss + sym.iss;
5031 sindex += strlen (sv[i]) + 1;
5035 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
5036 size = BFD_ALIGN (size, 16);
5037 rtproc = (PTR) bfd_alloc (abfd, size);
5040 mips_elf_hash_table (info)->procedure_count = 0;
5044 mips_elf_hash_table (info)->procedure_count = count + 2;
5046 erp = (struct rpdr_ext *) rtproc;
5047 memset (erp, 0, sizeof (struct rpdr_ext));
5049 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
5050 strcpy (str, no_name_func);
5051 str += strlen (no_name_func) + 1;
5052 for (i = 0; i < count; i++)
5054 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
5055 strcpy (str, sv[i]);
5056 str += strlen (sv[i]) + 1;
5058 ECOFF_PUT_OFF (abfd, -1, (erp + count)->p_adr);
5060 /* Set the size and contents of .rtproc section. */
5061 s->_raw_size = size;
5062 s->contents = (bfd_byte *) rtproc;
5064 /* Skip this section later on (I don't think this currently
5065 matters, but someday it might). */
5066 s->link_order_head = (struct bfd_link_order *) NULL;
5095 /* A comparison routine used to sort .gptab entries. */
5098 gptab_compare (p1, p2)
5102 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
5103 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
5105 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
5108 /* We need to use a special link routine to handle the .reginfo and
5109 the .mdebug sections. We need to merge all instances of these
5110 sections together, not write them all out sequentially. */
5113 _bfd_mips_elf_final_link (abfd, info)
5115 struct bfd_link_info *info;
5119 struct bfd_link_order *p;
5120 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
5121 asection *rtproc_sec;
5122 Elf32_RegInfo reginfo;
5123 struct ecoff_debug_info debug;
5124 const struct ecoff_debug_swap *swap
5125 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
5126 HDRR *symhdr = &debug.symbolic_header;
5127 PTR mdebug_handle = NULL;
5133 static const char * const secname[] =
5135 ".text", ".init", ".fini", ".data",
5136 ".rodata", ".sdata", ".sbss", ".bss"
5138 static const int sc[] =
5140 scText, scInit, scFini, scData,
5141 scRData, scSData, scSBss, scBss
5144 /* If all the things we linked together were PIC, but we're
5145 producing an executable (rather than a shared object), then the
5146 resulting file is CPIC (i.e., it calls PIC code.) */
5148 && !info->relocateable
5149 && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
5151 elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
5152 elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
5155 /* We'd carefully arranged the dynamic symbol indices, and then the
5156 generic size_dynamic_sections renumbered them out from under us.
5157 Rather than trying somehow to prevent the renumbering, just do
5159 if (elf_hash_table (info)->dynamic_sections_created)
5163 struct mips_got_info *g;
5165 /* When we resort, we must tell mips_elf_sort_hash_table what
5166 the lowest index it may use is. That's the number of section
5167 symbols we're going to add. The generic ELF linker only
5168 adds these symbols when building a shared object. Note that
5169 we count the sections after (possibly) removing the .options
5171 if (!mips_elf_sort_hash_table (info, (info->shared
5172 ? bfd_count_sections (abfd) + 1
5176 /* Make sure we didn't grow the global .got region. */
5177 dynobj = elf_hash_table (info)->dynobj;
5178 got = bfd_get_section_by_name (dynobj, ".got");
5179 g = (struct mips_got_info *) elf_section_data (got)->tdata;
5181 if (g->global_gotsym != NULL)
5182 BFD_ASSERT ((elf_hash_table (info)->dynsymcount
5183 - g->global_gotsym->dynindx)
5184 <= g->global_gotno);
5187 /* On IRIX5, we omit the .options section. On IRIX6, however, we
5188 include it, even though we don't process it quite right. (Some
5189 entries are supposed to be merged.) Empirically, we seem to be
5190 better off including it then not. */
5191 if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
5192 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
5194 if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
5196 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
5197 if (p->type == bfd_indirect_link_order)
5198 p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS;
5199 (*secpp)->link_order_head = NULL;
5200 bfd_section_list_remove (abfd, secpp);
5201 --abfd->section_count;
5207 /* Get a value for the GP register. */
5208 if (elf_gp (abfd) == 0)
5210 struct bfd_link_hash_entry *h;
5212 h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
5213 if (h != (struct bfd_link_hash_entry *) NULL
5214 && h->type == bfd_link_hash_defined)
5215 elf_gp (abfd) = (h->u.def.value
5216 + h->u.def.section->output_section->vma
5217 + h->u.def.section->output_offset);
5218 else if (info->relocateable)
5222 /* Find the GP-relative section with the lowest offset. */
5224 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
5226 && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
5229 /* And calculate GP relative to that. */
5230 elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
5234 /* If the relocate_section function needs to do a reloc
5235 involving the GP value, it should make a reloc_dangerous
5236 callback to warn that GP is not defined. */
5240 /* Go through the sections and collect the .reginfo and .mdebug
5244 gptab_data_sec = NULL;
5245 gptab_bss_sec = NULL;
5246 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
5248 if (strcmp (o->name, ".reginfo") == 0)
5250 memset (®info, 0, sizeof reginfo);
5252 /* We have found the .reginfo section in the output file.
5253 Look through all the link_orders comprising it and merge
5254 the information together. */
5255 for (p = o->link_order_head;
5256 p != (struct bfd_link_order *) NULL;
5259 asection *input_section;
5261 Elf32_External_RegInfo ext;
5264 if (p->type != bfd_indirect_link_order)
5266 if (p->type == bfd_fill_link_order)
5271 input_section = p->u.indirect.section;
5272 input_bfd = input_section->owner;
5274 /* The linker emulation code has probably clobbered the
5275 size to be zero bytes. */
5276 if (input_section->_raw_size == 0)
5277 input_section->_raw_size = sizeof (Elf32_External_RegInfo);
5279 if (! bfd_get_section_contents (input_bfd, input_section,
5282 (bfd_size_type) sizeof ext))
5285 bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
5287 reginfo.ri_gprmask |= sub.ri_gprmask;
5288 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
5289 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
5290 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
5291 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
5293 /* ri_gp_value is set by the function
5294 mips_elf32_section_processing when the section is
5295 finally written out. */
5297 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5298 elf_link_input_bfd ignores this section. */
5299 input_section->flags &= ~SEC_HAS_CONTENTS;
5302 /* Size has been set in mips_elf_always_size_sections */
5303 BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
5305 /* Skip this section later on (I don't think this currently
5306 matters, but someday it might). */
5307 o->link_order_head = (struct bfd_link_order *) NULL;
5312 if (strcmp (o->name, ".mdebug") == 0)
5314 struct extsym_info einfo;
5317 /* We have found the .mdebug section in the output file.
5318 Look through all the link_orders comprising it and merge
5319 the information together. */
5320 symhdr->magic = swap->sym_magic;
5321 /* FIXME: What should the version stamp be? */
5323 symhdr->ilineMax = 0;
5327 symhdr->isymMax = 0;
5328 symhdr->ioptMax = 0;
5329 symhdr->iauxMax = 0;
5331 symhdr->issExtMax = 0;
5334 symhdr->iextMax = 0;
5336 /* We accumulate the debugging information itself in the
5337 debug_info structure. */
5339 debug.external_dnr = NULL;
5340 debug.external_pdr = NULL;
5341 debug.external_sym = NULL;
5342 debug.external_opt = NULL;
5343 debug.external_aux = NULL;
5345 debug.ssext = debug.ssext_end = NULL;
5346 debug.external_fdr = NULL;
5347 debug.external_rfd = NULL;
5348 debug.external_ext = debug.external_ext_end = NULL;
5350 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
5351 if (mdebug_handle == (PTR) NULL)
5355 esym.cobol_main = 0;
5359 esym.asym.iss = issNil;
5360 esym.asym.st = stLocal;
5361 esym.asym.reserved = 0;
5362 esym.asym.index = indexNil;
5364 for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++)
5366 esym.asym.sc = sc[i];
5367 s = bfd_get_section_by_name (abfd, secname[i]);
5370 esym.asym.value = s->vma;
5371 last = s->vma + s->_raw_size;
5374 esym.asym.value = last;
5375 if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
5380 for (p = o->link_order_head;
5381 p != (struct bfd_link_order *) NULL;
5384 asection *input_section;
5386 const struct ecoff_debug_swap *input_swap;
5387 struct ecoff_debug_info input_debug;
5391 if (p->type != bfd_indirect_link_order)
5393 if (p->type == bfd_fill_link_order)
5398 input_section = p->u.indirect.section;
5399 input_bfd = input_section->owner;
5401 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
5402 || (get_elf_backend_data (input_bfd)
5403 ->elf_backend_ecoff_debug_swap) == NULL)
5405 /* I don't know what a non MIPS ELF bfd would be
5406 doing with a .mdebug section, but I don't really
5407 want to deal with it. */
5411 input_swap = (get_elf_backend_data (input_bfd)
5412 ->elf_backend_ecoff_debug_swap);
5414 BFD_ASSERT (p->size == input_section->_raw_size);
5416 /* The ECOFF linking code expects that we have already
5417 read in the debugging information and set up an
5418 ecoff_debug_info structure, so we do that now. */
5419 if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
5423 if (! (bfd_ecoff_debug_accumulate
5424 (mdebug_handle, abfd, &debug, swap, input_bfd,
5425 &input_debug, input_swap, info)))
5428 /* Loop through the external symbols. For each one with
5429 interesting information, try to find the symbol in
5430 the linker global hash table and save the information
5431 for the output external symbols. */
5432 eraw_src = input_debug.external_ext;
5433 eraw_end = (eraw_src
5434 + (input_debug.symbolic_header.iextMax
5435 * input_swap->external_ext_size));
5437 eraw_src < eraw_end;
5438 eraw_src += input_swap->external_ext_size)
5442 struct mips_elf_link_hash_entry *h;
5444 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
5445 if (ext.asym.sc == scNil
5446 || ext.asym.sc == scUndefined
5447 || ext.asym.sc == scSUndefined)
5450 name = input_debug.ssext + ext.asym.iss;
5451 h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
5452 name, false, false, true);
5453 if (h == NULL || h->esym.ifd != -2)
5459 < input_debug.symbolic_header.ifdMax);
5460 ext.ifd = input_debug.ifdmap[ext.ifd];
5466 /* Free up the information we just read. */
5467 free (input_debug.line);
5468 free (input_debug.external_dnr);
5469 free (input_debug.external_pdr);
5470 free (input_debug.external_sym);
5471 free (input_debug.external_opt);
5472 free (input_debug.external_aux);
5473 free (input_debug.ss);
5474 free (input_debug.ssext);
5475 free (input_debug.external_fdr);
5476 free (input_debug.external_rfd);
5477 free (input_debug.external_ext);
5479 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5480 elf_link_input_bfd ignores this section. */
5481 input_section->flags &= ~SEC_HAS_CONTENTS;
5484 if (SGI_COMPAT (abfd) && info->shared)
5486 /* Create .rtproc section. */
5487 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
5488 if (rtproc_sec == NULL)
5490 flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
5491 | SEC_LINKER_CREATED | SEC_READONLY);
5493 rtproc_sec = bfd_make_section (abfd, ".rtproc");
5494 if (rtproc_sec == NULL
5495 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
5496 || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
5500 if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
5501 info, rtproc_sec, &debug))
5505 /* Build the external symbol information. */
5508 einfo.debug = &debug;
5510 einfo.failed = false;
5511 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
5512 mips_elf_output_extsym,
5517 /* Set the size of the .mdebug section. */
5518 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
5520 /* Skip this section later on (I don't think this currently
5521 matters, but someday it might). */
5522 o->link_order_head = (struct bfd_link_order *) NULL;
5527 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
5529 const char *subname;
5532 Elf32_External_gptab *ext_tab;
5535 /* The .gptab.sdata and .gptab.sbss sections hold
5536 information describing how the small data area would
5537 change depending upon the -G switch. These sections
5538 not used in executables files. */
5539 if (! info->relocateable)
5541 for (p = o->link_order_head;
5542 p != (struct bfd_link_order *) NULL;
5545 asection *input_section;
5547 if (p->type != bfd_indirect_link_order)
5549 if (p->type == bfd_fill_link_order)
5554 input_section = p->u.indirect.section;
5556 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5557 elf_link_input_bfd ignores this section. */
5558 input_section->flags &= ~SEC_HAS_CONTENTS;
5561 /* Skip this section later on (I don't think this
5562 currently matters, but someday it might). */
5563 o->link_order_head = (struct bfd_link_order *) NULL;
5565 /* Really remove the section. */
5566 for (secpp = &abfd->sections;
5568 secpp = &(*secpp)->next)
5570 bfd_section_list_remove (abfd, secpp);
5571 --abfd->section_count;
5576 /* There is one gptab for initialized data, and one for
5577 uninitialized data. */
5578 if (strcmp (o->name, ".gptab.sdata") == 0)
5580 else if (strcmp (o->name, ".gptab.sbss") == 0)
5584 (*_bfd_error_handler)
5585 (_("%s: illegal section name `%s'"),
5586 bfd_get_filename (abfd), o->name);
5587 bfd_set_error (bfd_error_nonrepresentable_section);
5591 /* The linker script always combines .gptab.data and
5592 .gptab.sdata into .gptab.sdata, and likewise for
5593 .gptab.bss and .gptab.sbss. It is possible that there is
5594 no .sdata or .sbss section in the output file, in which
5595 case we must change the name of the output section. */
5596 subname = o->name + sizeof ".gptab" - 1;
5597 if (bfd_get_section_by_name (abfd, subname) == NULL)
5599 if (o == gptab_data_sec)
5600 o->name = ".gptab.data";
5602 o->name = ".gptab.bss";
5603 subname = o->name + sizeof ".gptab" - 1;
5604 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
5607 /* Set up the first entry. */
5609 amt = c * sizeof (Elf32_gptab);
5610 tab = (Elf32_gptab *) bfd_malloc (amt);
5613 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
5614 tab[0].gt_header.gt_unused = 0;
5616 /* Combine the input sections. */
5617 for (p = o->link_order_head;
5618 p != (struct bfd_link_order *) NULL;
5621 asection *input_section;
5625 bfd_size_type gpentry;
5627 if (p->type != bfd_indirect_link_order)
5629 if (p->type == bfd_fill_link_order)
5634 input_section = p->u.indirect.section;
5635 input_bfd = input_section->owner;
5637 /* Combine the gptab entries for this input section one
5638 by one. We know that the input gptab entries are
5639 sorted by ascending -G value. */
5640 size = bfd_section_size (input_bfd, input_section);
5642 for (gpentry = sizeof (Elf32_External_gptab);
5644 gpentry += sizeof (Elf32_External_gptab))
5646 Elf32_External_gptab ext_gptab;
5647 Elf32_gptab int_gptab;
5653 if (! (bfd_get_section_contents
5654 (input_bfd, input_section, (PTR) &ext_gptab,
5656 (bfd_size_type) sizeof (Elf32_External_gptab))))
5662 bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
5664 val = int_gptab.gt_entry.gt_g_value;
5665 add = int_gptab.gt_entry.gt_bytes - last;
5668 for (look = 1; look < c; look++)
5670 if (tab[look].gt_entry.gt_g_value >= val)
5671 tab[look].gt_entry.gt_bytes += add;
5673 if (tab[look].gt_entry.gt_g_value == val)
5679 Elf32_gptab *new_tab;
5682 /* We need a new table entry. */
5683 amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab);
5684 new_tab = (Elf32_gptab *) bfd_realloc ((PTR) tab, amt);
5685 if (new_tab == NULL)
5691 tab[c].gt_entry.gt_g_value = val;
5692 tab[c].gt_entry.gt_bytes = add;
5694 /* Merge in the size for the next smallest -G
5695 value, since that will be implied by this new
5698 for (look = 1; look < c; look++)
5700 if (tab[look].gt_entry.gt_g_value < val
5702 || (tab[look].gt_entry.gt_g_value
5703 > tab[max].gt_entry.gt_g_value)))
5707 tab[c].gt_entry.gt_bytes +=
5708 tab[max].gt_entry.gt_bytes;
5713 last = int_gptab.gt_entry.gt_bytes;
5716 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5717 elf_link_input_bfd ignores this section. */
5718 input_section->flags &= ~SEC_HAS_CONTENTS;
5721 /* The table must be sorted by -G value. */
5723 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
5725 /* Swap out the table. */
5726 amt = (bfd_size_type) c * sizeof (Elf32_External_gptab);
5727 ext_tab = (Elf32_External_gptab *) bfd_alloc (abfd, amt);
5728 if (ext_tab == NULL)
5734 for (j = 0; j < c; j++)
5735 bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j);
5738 o->_raw_size = c * sizeof (Elf32_External_gptab);
5739 o->contents = (bfd_byte *) ext_tab;
5741 /* Skip this section later on (I don't think this currently
5742 matters, but someday it might). */
5743 o->link_order_head = (struct bfd_link_order *) NULL;
5747 /* Invoke the regular ELF backend linker to do all the work. */
5748 if (ABI_64_P (abfd))
5751 if (!bfd_elf64_bfd_final_link (abfd, info))
5758 else if (!bfd_elf32_bfd_final_link (abfd, info))
5761 /* Now write out the computed sections. */
5763 if (reginfo_sec != (asection *) NULL)
5765 Elf32_External_RegInfo ext;
5767 bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
5768 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
5769 (file_ptr) 0, (bfd_size_type) sizeof ext))
5773 if (mdebug_sec != (asection *) NULL)
5775 BFD_ASSERT (abfd->output_has_begun);
5776 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
5778 mdebug_sec->filepos))
5781 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
5784 if (gptab_data_sec != (asection *) NULL)
5786 if (! bfd_set_section_contents (abfd, gptab_data_sec,
5787 gptab_data_sec->contents,
5789 gptab_data_sec->_raw_size))
5793 if (gptab_bss_sec != (asection *) NULL)
5795 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
5796 gptab_bss_sec->contents,
5798 gptab_bss_sec->_raw_size))
5802 if (SGI_COMPAT (abfd))
5804 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
5805 if (rtproc_sec != NULL)
5807 if (! bfd_set_section_contents (abfd, rtproc_sec,
5808 rtproc_sec->contents,
5810 rtproc_sec->_raw_size))
5818 /* This function is called via qsort() to sort the dynamic relocation
5819 entries by increasing r_symndx value. */
5822 sort_dynamic_relocs (arg1, arg2)
5826 const Elf32_External_Rel *ext_reloc1 = (const Elf32_External_Rel *) arg1;
5827 const Elf32_External_Rel *ext_reloc2 = (const Elf32_External_Rel *) arg2;
5829 Elf_Internal_Rel int_reloc1;
5830 Elf_Internal_Rel int_reloc2;
5832 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc1, &int_reloc1);
5833 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc2, &int_reloc2);
5835 return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info));
5838 /* Returns the GOT section for ABFD. */
5841 mips_elf_got_section (abfd)
5844 return bfd_get_section_by_name (abfd, ".got");
5847 /* Returns the GOT information associated with the link indicated by
5848 INFO. If SGOTP is non-NULL, it is filled in with the GOT
5851 static struct mips_got_info *
5852 mips_elf_got_info (abfd, sgotp)
5857 struct mips_got_info *g;
5859 sgot = mips_elf_got_section (abfd);
5860 BFD_ASSERT (sgot != NULL);
5861 BFD_ASSERT (elf_section_data (sgot) != NULL);
5862 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5863 BFD_ASSERT (g != NULL);
5870 /* Return whether a relocation is against a local symbol. */
5873 mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
5876 const Elf_Internal_Rela *relocation;
5877 asection **local_sections;
5878 boolean check_forced;
5880 unsigned long r_symndx;
5881 Elf_Internal_Shdr *symtab_hdr;
5882 struct mips_elf_link_hash_entry *h;
5885 r_symndx = ELF32_R_SYM (relocation->r_info);
5886 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5887 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
5889 if (r_symndx < extsymoff)
5891 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
5896 /* Look up the hash table to check whether the symbol
5897 was forced local. */
5898 h = (struct mips_elf_link_hash_entry *)
5899 elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
5900 /* Find the real hash-table entry for this symbol. */
5901 while (h->root.root.type == bfd_link_hash_indirect
5902 || h->root.root.type == bfd_link_hash_warning)
5903 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
5904 if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
5911 /* Sign-extend VALUE, which has the indicated number of BITS. */
5914 mips_elf_sign_extend (value, bits)
5918 if (value & ((bfd_vma) 1 << (bits - 1)))
5919 /* VALUE is negative. */
5920 value |= ((bfd_vma) - 1) << bits;
5925 /* Return non-zero if the indicated VALUE has overflowed the maximum
5926 range expressable by a signed number with the indicated number of
5930 mips_elf_overflow_p (value, bits)
5934 bfd_signed_vma svalue = (bfd_signed_vma) value;
5936 if (svalue > (1 << (bits - 1)) - 1)
5937 /* The value is too big. */
5939 else if (svalue < -(1 << (bits - 1)))
5940 /* The value is too small. */
5947 /* Calculate the %high function. */
5950 mips_elf_high (value)
5953 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
5956 /* Calculate the %higher function. */
5959 mips_elf_higher (value)
5960 bfd_vma value ATTRIBUTE_UNUSED;
5963 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
5966 return (bfd_vma) -1;
5970 /* Calculate the %highest function. */
5973 mips_elf_highest (value)
5974 bfd_vma value ATTRIBUTE_UNUSED;
5977 return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff;
5980 return (bfd_vma) -1;
5984 /* Returns the GOT index for the global symbol indicated by H. */
5987 mips_elf_global_got_index (abfd, h)
5989 struct elf_link_hash_entry *h;
5993 struct mips_got_info *g;
5995 g = mips_elf_got_info (abfd, &sgot);
5997 /* Once we determine the global GOT entry with the lowest dynamic
5998 symbol table index, we must put all dynamic symbols with greater
5999 indices into the GOT. That makes it easy to calculate the GOT
6001 BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
6002 index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
6003 * MIPS_ELF_GOT_SIZE (abfd));
6004 BFD_ASSERT (index < sgot->_raw_size);
6009 /* Returns the offset for the entry at the INDEXth position
6013 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
6021 sgot = mips_elf_got_section (dynobj);
6022 gp = _bfd_get_gp_value (output_bfd);
6023 return (sgot->output_section->vma + sgot->output_offset + index -
6027 /* If H is a symbol that needs a global GOT entry, but has a dynamic
6028 symbol table index lower than any we've seen to date, record it for
6032 mips_elf_record_global_got_symbol (h, info, g)
6033 struct elf_link_hash_entry *h;
6034 struct bfd_link_info *info;
6035 struct mips_got_info *g ATTRIBUTE_UNUSED;
6037 /* A global symbol in the GOT must also be in the dynamic symbol
6039 if (h->dynindx == -1
6040 && !bfd_elf32_link_record_dynamic_symbol (info, h))
6043 /* If we've already marked this entry as needing GOT space, we don't
6044 need to do it again. */
6045 if (h->got.offset != (bfd_vma) -1)
6048 /* By setting this to a value other than -1, we are indicating that
6049 there needs to be a GOT entry for H. Avoid using zero, as the
6050 generic ELF copy_indirect_symbol tests for <= 0. */
6056 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
6057 the dynamic symbols. */
6059 struct mips_elf_hash_sort_data
6061 /* The symbol in the global GOT with the lowest dynamic symbol table
6063 struct elf_link_hash_entry *low;
6064 /* The least dynamic symbol table index corresponding to a symbol
6065 with a GOT entry. */
6066 long min_got_dynindx;
6067 /* The greatest dynamic symbol table index not corresponding to a
6068 symbol without a GOT entry. */
6069 long max_non_got_dynindx;
6072 /* If H needs a GOT entry, assign it the highest available dynamic
6073 index. Otherwise, assign it the lowest available dynamic
6077 mips_elf_sort_hash_table_f (h, data)
6078 struct mips_elf_link_hash_entry *h;
6081 struct mips_elf_hash_sort_data *hsd
6082 = (struct mips_elf_hash_sort_data *) data;
6084 /* Symbols without dynamic symbol table entries aren't interesting
6086 if (h->root.dynindx == -1)
6089 if (h->root.got.offset != 1)
6090 h->root.dynindx = hsd->max_non_got_dynindx++;
6093 h->root.dynindx = --hsd->min_got_dynindx;
6094 hsd->low = (struct elf_link_hash_entry *) h;
6100 /* Sort the dynamic symbol table so that symbols that need GOT entries
6101 appear towards the end. This reduces the amount of GOT space
6102 required. MAX_LOCAL is used to set the number of local symbols
6103 known to be in the dynamic symbol table. During
6104 mips_elf_size_dynamic_sections, this value is 1. Afterward, the
6105 section symbols are added and the count is higher. */
6108 mips_elf_sort_hash_table (info, max_local)
6109 struct bfd_link_info *info;
6110 unsigned long max_local;
6112 struct mips_elf_hash_sort_data hsd;
6113 struct mips_got_info *g;
6116 dynobj = elf_hash_table (info)->dynobj;
6119 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
6120 hsd.max_non_got_dynindx = max_local;
6121 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
6122 elf_hash_table (info)),
6123 mips_elf_sort_hash_table_f,
6126 /* There should have been enough room in the symbol table to
6127 accomodate both the GOT and non-GOT symbols. */
6128 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
6130 /* Now we know which dynamic symbol has the lowest dynamic symbol
6131 table index in the GOT. */
6132 g = mips_elf_got_info (dynobj, NULL);
6133 g->global_gotsym = hsd.low;
6138 /* Create a local GOT entry for VALUE. Return the index of the entry,
6139 or -1 if it could not be created. */
6142 mips_elf_create_local_got_entry (abfd, g, sgot, value)
6144 struct mips_got_info *g;
6148 if (g->assigned_gotno >= g->local_gotno)
6150 /* We didn't allocate enough space in the GOT. */
6151 (*_bfd_error_handler)
6152 (_("not enough GOT space for local GOT entries"));
6153 bfd_set_error (bfd_error_bad_value);
6154 return (bfd_vma) -1;
6157 MIPS_ELF_PUT_WORD (abfd, value,
6159 + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
6160 return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
6163 /* Returns the GOT offset at which the indicated address can be found.
6164 If there is not yet a GOT entry for this value, create one. Returns
6165 -1 if no satisfactory GOT offset can be found. */
6168 mips_elf_local_got_index (abfd, info, value)
6170 struct bfd_link_info *info;
6174 struct mips_got_info *g;
6177 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6179 /* Look to see if we already have an appropriate entry. */
6180 for (entry = (sgot->contents
6181 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6182 entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6183 entry += MIPS_ELF_GOT_SIZE (abfd))
6185 bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
6186 if (address == value)
6187 return entry - sgot->contents;
6190 return mips_elf_create_local_got_entry (abfd, g, sgot, value);
6193 /* Find a GOT entry that is within 32KB of the VALUE. These entries
6194 are supposed to be placed at small offsets in the GOT, i.e.,
6195 within 32KB of GP. Return the index into the GOT for this page,
6196 and store the offset from this entry to the desired address in
6197 OFFSETP, if it is non-NULL. */
6200 mips_elf_got_page (abfd, info, value, offsetp)
6202 struct bfd_link_info *info;
6207 struct mips_got_info *g;
6209 bfd_byte *last_entry;
6213 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6215 /* Look to see if we aleady have an appropriate entry. */
6216 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6217 for (entry = (sgot->contents
6218 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6219 entry != last_entry;
6220 entry += MIPS_ELF_GOT_SIZE (abfd))
6222 address = MIPS_ELF_GET_WORD (abfd, entry);
6224 if (!mips_elf_overflow_p (value - address, 16))
6226 /* This entry will serve as the page pointer. We can add a
6227 16-bit number to it to get the actual address. */
6228 index = entry - sgot->contents;
6233 /* If we didn't have an appropriate entry, we create one now. */
6234 if (entry == last_entry)
6235 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
6239 address = MIPS_ELF_GET_WORD (abfd, entry);
6240 *offsetp = value - address;
6246 /* Find a GOT entry whose higher-order 16 bits are the same as those
6247 for value. Return the index into the GOT for this entry. */
6250 mips_elf_got16_entry (abfd, info, value, external)
6252 struct bfd_link_info *info;
6257 struct mips_got_info *g;
6259 bfd_byte *last_entry;
6265 /* Although the ABI says that it is "the high-order 16 bits" that we
6266 want, it is really the %high value. The complete value is
6267 calculated with a `addiu' of a LO16 relocation, just as with a
6269 value = mips_elf_high (value) << 16;
6272 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
6274 /* Look to see if we already have an appropriate entry. */
6275 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
6276 for (entry = (sgot->contents
6277 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
6278 entry != last_entry;
6279 entry += MIPS_ELF_GOT_SIZE (abfd))
6281 address = MIPS_ELF_GET_WORD (abfd, entry);
6282 if (address == value)
6284 /* This entry has the right high-order 16 bits, and the low-order
6285 16 bits are set to zero. */
6286 index = entry - sgot->contents;
6291 /* If we didn't have an appropriate entry, we create one now. */
6292 if (entry == last_entry)
6293 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
6298 /* Returns the first relocation of type r_type found, beginning with
6299 RELOCATION. RELEND is one-past-the-end of the relocation table. */
6301 static const Elf_Internal_Rela *
6302 mips_elf_next_relocation (r_type, relocation, relend)
6303 unsigned int r_type;
6304 const Elf_Internal_Rela *relocation;
6305 const Elf_Internal_Rela *relend;
6307 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
6308 immediately following. However, for the IRIX6 ABI, the next
6309 relocation may be a composed relocation consisting of several
6310 relocations for the same address. In that case, the R_MIPS_LO16
6311 relocation may occur as one of these. We permit a similar
6312 extension in general, as that is useful for GCC. */
6313 while (relocation < relend)
6315 if (ELF32_R_TYPE (relocation->r_info) == r_type)
6321 /* We didn't find it. */
6322 bfd_set_error (bfd_error_bad_value);
6326 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
6327 is the original relocation, which is now being transformed into a
6328 dynamic relocation. The ADDENDP is adjusted if necessary; the
6329 caller should store the result in place of the original addend. */
6332 mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
6333 symbol, addendp, input_section)
6335 struct bfd_link_info *info;
6336 const Elf_Internal_Rela *rel;
6337 struct mips_elf_link_hash_entry *h;
6341 asection *input_section;
6343 Elf_Internal_Rel outrel;
6349 r_type = ELF32_R_TYPE (rel->r_info);
6350 dynobj = elf_hash_table (info)->dynobj;
6352 = bfd_get_section_by_name (dynobj,
6353 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
6354 BFD_ASSERT (sreloc != NULL);
6355 BFD_ASSERT (sreloc->contents != NULL);
6356 BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd)
6357 < sreloc->_raw_size);
6361 _bfd_elf_section_offset (output_bfd, info, input_section, rel->r_offset);
6362 if (outrel.r_offset == (bfd_vma) -1)
6365 /* If we've decided to skip this relocation, just output an empty
6366 record. Note that R_MIPS_NONE == 0, so that this call to memset
6367 is a way of setting R_TYPE to R_MIPS_NONE. */
6369 memset (&outrel, 0, sizeof (outrel));
6373 bfd_vma section_offset;
6375 /* We must now calculate the dynamic symbol table index to use
6376 in the relocation. */
6378 && (! info->symbolic || (h->root.elf_link_hash_flags
6379 & ELF_LINK_HASH_DEF_REGULAR) == 0))
6381 indx = h->root.dynindx;
6382 /* h->root.dynindx may be -1 if this symbol was marked to
6389 if (sec != NULL && bfd_is_abs_section (sec))
6391 else if (sec == NULL || sec->owner == NULL)
6393 bfd_set_error (bfd_error_bad_value);
6398 indx = elf_section_data (sec->output_section)->dynindx;
6403 /* Figure out how far the target of the relocation is from
6404 the beginning of its section. */
6405 section_offset = symbol - sec->output_section->vma;
6406 /* The relocation we're building is section-relative.
6407 Therefore, the original addend must be adjusted by the
6409 *addendp += section_offset;
6410 /* Now, the relocation is just against the section. */
6411 symbol = sec->output_section->vma;
6414 /* If the relocation was previously an absolute relocation and
6415 this symbol will not be referred to by the relocation, we must
6416 adjust it by the value we give it in the dynamic symbol table.
6417 Otherwise leave the job up to the dynamic linker. */
6418 if (!indx && r_type != R_MIPS_REL32)
6421 /* The relocation is always an REL32 relocation because we don't
6422 know where the shared library will wind up at load-time. */
6423 outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
6425 /* Adjust the output offset of the relocation to reference the
6426 correct location in the output file. */
6427 outrel.r_offset += (input_section->output_section->vma
6428 + input_section->output_offset);
6431 /* Put the relocation back out. We have to use the special
6432 relocation outputter in the 64-bit case since the 64-bit
6433 relocation format is non-standard. */
6434 if (ABI_64_P (output_bfd))
6436 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
6437 (output_bfd, &outrel,
6439 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
6442 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
6443 (((Elf32_External_Rel *)
6445 + sreloc->reloc_count));
6447 /* Record the index of the first relocation referencing H. This
6448 information is later emitted in the .msym section. */
6450 && (h->min_dyn_reloc_index == 0
6451 || sreloc->reloc_count < h->min_dyn_reloc_index))
6452 h->min_dyn_reloc_index = sreloc->reloc_count;
6454 /* We've now added another relocation. */
6455 ++sreloc->reloc_count;
6457 /* Make sure the output section is writable. The dynamic linker
6458 will be writing to it. */
6459 elf_section_data (input_section->output_section)->this_hdr.sh_flags
6462 /* On IRIX5, make an entry of compact relocation info. */
6463 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
6465 asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
6470 Elf32_crinfo cptrel;
6472 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
6473 cptrel.vaddr = (rel->r_offset
6474 + input_section->output_section->vma
6475 + input_section->output_offset);
6476 if (r_type == R_MIPS_REL32)
6477 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
6479 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
6480 mips_elf_set_cr_dist2to (cptrel, 0);
6481 cptrel.konst = *addendp;
6483 cr = (scpt->contents
6484 + sizeof (Elf32_External_compact_rel));
6485 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
6486 ((Elf32_External_crinfo *) cr
6487 + scpt->reloc_count));
6488 ++scpt->reloc_count;
6495 /* Calculate the value produced by the RELOCATION (which comes from
6496 the INPUT_BFD). The ADDEND is the addend to use for this
6497 RELOCATION; RELOCATION->R_ADDEND is ignored.
6499 The result of the relocation calculation is stored in VALUEP.
6500 REQUIRE_JALXP indicates whether or not the opcode used with this
6501 relocation must be JALX.
6503 This function returns bfd_reloc_continue if the caller need take no
6504 further action regarding this relocation, bfd_reloc_notsupported if
6505 something goes dramatically wrong, bfd_reloc_overflow if an
6506 overflow occurs, and bfd_reloc_ok to indicate success. */
6508 static bfd_reloc_status_type
6509 mips_elf_calculate_relocation (abfd,
6523 asection *input_section;
6524 struct bfd_link_info *info;
6525 const Elf_Internal_Rela *relocation;
6527 reloc_howto_type *howto;
6528 Elf_Internal_Sym *local_syms;
6529 asection **local_sections;
6532 boolean *require_jalxp;
6534 /* The eventual value we will return. */
6536 /* The address of the symbol against which the relocation is
6539 /* The final GP value to be used for the relocatable, executable, or
6540 shared object file being produced. */
6541 bfd_vma gp = (bfd_vma) - 1;
6542 /* The place (section offset or address) of the storage unit being
6545 /* The value of GP used to create the relocatable object. */
6546 bfd_vma gp0 = (bfd_vma) - 1;
6547 /* The offset into the global offset table at which the address of
6548 the relocation entry symbol, adjusted by the addend, resides
6549 during execution. */
6550 bfd_vma g = (bfd_vma) - 1;
6551 /* The section in which the symbol referenced by the relocation is
6553 asection *sec = NULL;
6554 struct mips_elf_link_hash_entry *h = NULL;
6555 /* True if the symbol referred to by this relocation is a local
6558 /* True if the symbol referred to by this relocation is "_gp_disp". */
6559 boolean gp_disp_p = false;
6560 Elf_Internal_Shdr *symtab_hdr;
6562 unsigned long r_symndx;
6564 /* True if overflow occurred during the calculation of the
6565 relocation value. */
6566 boolean overflowed_p;
6567 /* True if this relocation refers to a MIPS16 function. */
6568 boolean target_is_16_bit_code_p = false;
6570 /* Parse the relocation. */
6571 r_symndx = ELF32_R_SYM (relocation->r_info);
6572 r_type = ELF32_R_TYPE (relocation->r_info);
6573 p = (input_section->output_section->vma
6574 + input_section->output_offset
6575 + relocation->r_offset);
6577 /* Assume that there will be no overflow. */
6578 overflowed_p = false;
6580 /* Figure out whether or not the symbol is local, and get the offset
6581 used in the array of hash table entries. */
6582 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6583 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
6584 local_sections, false);
6585 if (! elf_bad_symtab (input_bfd))
6586 extsymoff = symtab_hdr->sh_info;
6589 /* The symbol table does not follow the rule that local symbols
6590 must come before globals. */
6594 /* Figure out the value of the symbol. */
6597 Elf_Internal_Sym *sym;
6599 sym = local_syms + r_symndx;
6600 sec = local_sections[r_symndx];
6602 symbol = sec->output_section->vma + sec->output_offset;
6603 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
6604 symbol += sym->st_value;
6606 /* MIPS16 text labels should be treated as odd. */
6607 if (sym->st_other == STO_MIPS16)
6610 /* Record the name of this symbol, for our caller. */
6611 *namep = bfd_elf_string_from_elf_section (input_bfd,
6612 symtab_hdr->sh_link,
6615 *namep = bfd_section_name (input_bfd, sec);
6617 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
6621 /* For global symbols we look up the symbol in the hash-table. */
6622 h = ((struct mips_elf_link_hash_entry *)
6623 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
6624 /* Find the real hash-table entry for this symbol. */
6625 while (h->root.root.type == bfd_link_hash_indirect
6626 || h->root.root.type == bfd_link_hash_warning)
6627 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
6629 /* Record the name of this symbol, for our caller. */
6630 *namep = h->root.root.root.string;
6632 /* See if this is the special _gp_disp symbol. Note that such a
6633 symbol must always be a global symbol. */
6634 if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
6636 /* Relocations against _gp_disp are permitted only with
6637 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
6638 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
6639 return bfd_reloc_notsupported;
6643 /* If this symbol is defined, calculate its address. Note that
6644 _gp_disp is a magic symbol, always implicitly defined by the
6645 linker, so it's inappropriate to check to see whether or not
6647 else if ((h->root.root.type == bfd_link_hash_defined
6648 || h->root.root.type == bfd_link_hash_defweak)
6649 && h->root.root.u.def.section)
6651 sec = h->root.root.u.def.section;
6652 if (sec->output_section)
6653 symbol = (h->root.root.u.def.value
6654 + sec->output_section->vma
6655 + sec->output_offset);
6657 symbol = h->root.root.u.def.value;
6659 else if (h->root.root.type == bfd_link_hash_undefweak)
6660 /* We allow relocations against undefined weak symbols, giving
6661 it the value zero, so that you can undefined weak functions
6662 and check to see if they exist by looking at their
6665 else if (info->shared
6666 && (!info->symbolic || info->allow_shlib_undefined)
6667 && !info->no_undefined
6668 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
6670 else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
6671 strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
6673 /* If this is a dynamic link, we should have created a
6674 _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
6675 in in mips_elf_create_dynamic_sections.
6676 Otherwise, we should define the symbol with a value of 0.
6677 FIXME: It should probably get into the symbol table
6679 BFD_ASSERT (! info->shared);
6680 BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
6685 if (! ((*info->callbacks->undefined_symbol)
6686 (info, h->root.root.root.string, input_bfd,
6687 input_section, relocation->r_offset,
6688 (!info->shared || info->no_undefined
6689 || ELF_ST_VISIBILITY (h->root.other)))))
6690 return bfd_reloc_undefined;
6694 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
6697 /* If this is a 32-bit call to a 16-bit function with a stub, we
6698 need to redirect the call to the stub, unless we're already *in*
6700 if (r_type != R_MIPS16_26 && !info->relocateable
6701 && ((h != NULL && h->fn_stub != NULL)
6702 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
6703 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
6704 && !mips_elf_stub_section_p (input_bfd, input_section))
6706 /* This is a 32-bit call to a 16-bit function. We should
6707 have already noticed that we were going to need the
6710 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
6713 BFD_ASSERT (h->need_fn_stub);
6717 symbol = sec->output_section->vma + sec->output_offset;
6719 /* If this is a 16-bit call to a 32-bit function with a stub, we
6720 need to redirect the call to the stub. */
6721 else if (r_type == R_MIPS16_26 && !info->relocateable
6723 && (h->call_stub != NULL || h->call_fp_stub != NULL)
6724 && !target_is_16_bit_code_p)
6726 /* If both call_stub and call_fp_stub are defined, we can figure
6727 out which one to use by seeing which one appears in the input
6729 if (h->call_stub != NULL && h->call_fp_stub != NULL)
6734 for (o = input_bfd->sections; o != NULL; o = o->next)
6736 if (strncmp (bfd_get_section_name (input_bfd, o),
6737 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
6739 sec = h->call_fp_stub;
6746 else if (h->call_stub != NULL)
6749 sec = h->call_fp_stub;
6751 BFD_ASSERT (sec->_raw_size > 0);
6752 symbol = sec->output_section->vma + sec->output_offset;
6755 /* Calls from 16-bit code to 32-bit code and vice versa require the
6756 special jalx instruction. */
6757 *require_jalxp = (!info->relocateable
6758 && (((r_type == R_MIPS16_26) && !target_is_16_bit_code_p)
6759 || ((r_type == R_MIPS_26) && target_is_16_bit_code_p)));
6761 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
6762 local_sections, true);
6764 /* If we haven't already determined the GOT offset, or the GP value,
6765 and we're going to need it, get it now. */
6770 case R_MIPS_GOT_DISP:
6771 case R_MIPS_GOT_HI16:
6772 case R_MIPS_CALL_HI16:
6773 case R_MIPS_GOT_LO16:
6774 case R_MIPS_CALL_LO16:
6775 /* Find the index into the GOT where this value is located. */
6778 BFD_ASSERT (addend == 0);
6779 g = mips_elf_global_got_index
6780 (elf_hash_table (info)->dynobj,
6781 (struct elf_link_hash_entry *) h);
6782 if (! elf_hash_table(info)->dynamic_sections_created
6784 && (info->symbolic || h->root.dynindx == -1)
6785 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
6787 /* This is a static link or a -Bsymbolic link. The
6788 symbol is defined locally, or was forced to be local.
6789 We must initialize this entry in the GOT. */
6790 asection *sgot = mips_elf_got_section(elf_hash_table
6792 MIPS_ELF_PUT_WORD (elf_hash_table (info)->dynobj,
6793 symbol + addend, sgot->contents + g);
6796 else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
6797 /* There's no need to create a local GOT entry here; the
6798 calculation for a local GOT16 entry does not involve G. */
6802 g = mips_elf_local_got_index (abfd, info, symbol + addend);
6803 if (g == (bfd_vma) -1)
6804 return bfd_reloc_outofrange;
6807 /* Convert GOT indices to actual offsets. */
6808 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6814 case R_MIPS16_GPREL:
6815 case R_MIPS_GPREL16:
6816 case R_MIPS_GPREL32:
6817 case R_MIPS_LITERAL:
6818 gp0 = _bfd_get_gp_value (input_bfd);
6819 gp = _bfd_get_gp_value (abfd);
6826 /* Figure out what kind of relocation is being performed. */
6830 return bfd_reloc_continue;
6833 value = symbol + mips_elf_sign_extend (addend, 16);
6834 overflowed_p = mips_elf_overflow_p (value, 16);
6841 || (elf_hash_table (info)->dynamic_sections_created
6843 && ((h->root.elf_link_hash_flags
6844 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
6845 && ((h->root.elf_link_hash_flags
6846 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
6848 && (input_section->flags & SEC_ALLOC) != 0)
6850 /* If we're creating a shared library, or this relocation is
6851 against a symbol in a shared library, then we can't know
6852 where the symbol will end up. So, we create a relocation
6853 record in the output, and leave the job up to the dynamic
6856 if (!mips_elf_create_dynamic_relocation (abfd,
6864 return bfd_reloc_undefined;
6868 if (r_type != R_MIPS_REL32)
6869 value = symbol + addend;
6873 value &= howto->dst_mask;
6878 case R_MIPS_GNU_REL_LO16:
6879 value = symbol + addend - p;
6880 value &= howto->dst_mask;
6883 case R_MIPS_GNU_REL16_S2:
6884 value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
6885 overflowed_p = mips_elf_overflow_p (value, 18);
6886 value = (value >> 2) & howto->dst_mask;
6889 case R_MIPS_GNU_REL_HI16:
6890 /* Instead of subtracting 'p' here, we should be subtracting the
6891 equivalent value for the LO part of the reloc, since the value
6892 here is relative to that address. Because that's not easy to do,
6893 we adjust 'addend' in _bfd_mips_elf_relocate_section(). See also
6894 the comment there for more information. */
6895 value = mips_elf_high (addend + symbol - p);
6896 value &= howto->dst_mask;
6900 /* The calculation for R_MIPS16_26 is just the same as for an
6901 R_MIPS_26. It's only the storage of the relocated field into
6902 the output file that's different. That's handled in
6903 mips_elf_perform_relocation. So, we just fall through to the
6904 R_MIPS_26 case here. */
6907 value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
6909 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
6910 value &= howto->dst_mask;
6916 value = mips_elf_high (addend + symbol);
6917 value &= howto->dst_mask;
6921 value = mips_elf_high (addend + gp - p);
6922 overflowed_p = mips_elf_overflow_p (value, 16);
6928 value = (symbol + addend) & howto->dst_mask;
6931 value = addend + gp - p + 4;
6932 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
6933 for overflow. But, on, say, Irix 5, relocations against
6934 _gp_disp are normally generated from the .cpload
6935 pseudo-op. It generates code that normally looks like
6938 lui $gp,%hi(_gp_disp)
6939 addiu $gp,$gp,%lo(_gp_disp)
6942 Here $t9 holds the address of the function being called,
6943 as required by the MIPS ELF ABI. The R_MIPS_LO16
6944 relocation can easily overflow in this situation, but the
6945 R_MIPS_HI16 relocation will handle the overflow.
6946 Therefore, we consider this a bug in the MIPS ABI, and do
6947 not check for overflow here. */
6951 case R_MIPS_LITERAL:
6952 /* Because we don't merge literal sections, we can handle this
6953 just like R_MIPS_GPREL16. In the long run, we should merge
6954 shared literals, and then we will need to additional work
6959 case R_MIPS16_GPREL:
6960 /* The R_MIPS16_GPREL performs the same calculation as
6961 R_MIPS_GPREL16, but stores the relocated bits in a different
6962 order. We don't need to do anything special here; the
6963 differences are handled in mips_elf_perform_relocation. */
6964 case R_MIPS_GPREL16:
6966 value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
6968 value = mips_elf_sign_extend (addend, 16) + symbol - gp;
6969 overflowed_p = mips_elf_overflow_p (value, 16);
6978 /* The special case is when the symbol is forced to be local. We
6979 need the full address in the GOT since no R_MIPS_LO16 relocation
6981 forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
6982 local_sections, false);
6983 value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
6984 if (value == (bfd_vma) -1)
6985 return bfd_reloc_outofrange;
6987 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6990 overflowed_p = mips_elf_overflow_p (value, 16);
6996 case R_MIPS_GOT_DISP:
6998 overflowed_p = mips_elf_overflow_p (value, 16);
7001 case R_MIPS_GPREL32:
7002 value = (addend + symbol + gp0 - gp) & howto->dst_mask;
7006 value = mips_elf_sign_extend (addend, 16) + symbol - p;
7007 overflowed_p = mips_elf_overflow_p (value, 16);
7008 value = (bfd_vma) ((bfd_signed_vma) value / 4);
7011 case R_MIPS_GOT_HI16:
7012 case R_MIPS_CALL_HI16:
7013 /* We're allowed to handle these two relocations identically.
7014 The dynamic linker is allowed to handle the CALL relocations
7015 differently by creating a lazy evaluation stub. */
7017 value = mips_elf_high (value);
7018 value &= howto->dst_mask;
7021 case R_MIPS_GOT_LO16:
7022 case R_MIPS_CALL_LO16:
7023 value = g & howto->dst_mask;
7026 case R_MIPS_GOT_PAGE:
7027 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
7028 if (value == (bfd_vma) -1)
7029 return bfd_reloc_outofrange;
7030 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
7033 overflowed_p = mips_elf_overflow_p (value, 16);
7036 case R_MIPS_GOT_OFST:
7037 mips_elf_got_page (abfd, info, symbol + addend, &value);
7038 overflowed_p = mips_elf_overflow_p (value, 16);
7042 value = symbol - addend;
7043 value &= howto->dst_mask;
7047 value = mips_elf_higher (addend + symbol);
7048 value &= howto->dst_mask;
7051 case R_MIPS_HIGHEST:
7052 value = mips_elf_highest (addend + symbol);
7053 value &= howto->dst_mask;
7056 case R_MIPS_SCN_DISP:
7057 value = symbol + addend - sec->output_offset;
7058 value &= howto->dst_mask;
7063 /* Both of these may be ignored. R_MIPS_JALR is an optimization
7064 hint; we could improve performance by honoring that hint. */
7065 return bfd_reloc_continue;
7067 case R_MIPS_GNU_VTINHERIT:
7068 case R_MIPS_GNU_VTENTRY:
7069 /* We don't do anything with these at present. */
7070 return bfd_reloc_continue;
7073 /* An unrecognized relocation type. */
7074 return bfd_reloc_notsupported;
7077 /* Store the VALUE for our caller. */
7079 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
7082 /* Obtain the field relocated by RELOCATION. */
7085 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
7086 reloc_howto_type *howto;
7087 const Elf_Internal_Rela *relocation;
7092 bfd_byte *location = contents + relocation->r_offset;
7094 /* Obtain the bytes. */
7095 x = bfd_get (((bfd_vma)(8 * bfd_get_reloc_size (howto))), input_bfd, location);
7097 if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
7098 || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
7099 && bfd_little_endian (input_bfd))
7100 /* The two 16-bit words will be reversed on a little-endian
7101 system. See mips_elf_perform_relocation for more details. */
7102 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
7107 /* It has been determined that the result of the RELOCATION is the
7108 VALUE. Use HOWTO to place VALUE into the output file at the
7109 appropriate position. The SECTION is the section to which the
7110 relocation applies. If REQUIRE_JALX is true, then the opcode used
7111 for the relocation must be either JAL or JALX, and it is
7112 unconditionally converted to JALX.
7114 Returns false if anything goes wrong. */
7117 mips_elf_perform_relocation (info, howto, relocation, value,
7118 input_bfd, input_section,
7119 contents, require_jalx)
7120 struct bfd_link_info *info;
7121 reloc_howto_type *howto;
7122 const Elf_Internal_Rela *relocation;
7125 asection *input_section;
7127 boolean require_jalx;
7131 int r_type = ELF32_R_TYPE (relocation->r_info);
7133 /* Figure out where the relocation is occurring. */
7134 location = contents + relocation->r_offset;
7136 /* Obtain the current value. */
7137 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
7139 /* Clear the field we are setting. */
7140 x &= ~howto->dst_mask;
7142 /* If this is the R_MIPS16_26 relocation, we must store the
7143 value in a funny way. */
7144 if (r_type == R_MIPS16_26)
7146 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
7147 Most mips16 instructions are 16 bits, but these instructions
7150 The format of these instructions is:
7152 +--------------+--------------------------------+
7153 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
7154 +--------------+--------------------------------+
7156 +-----------------------------------------------+
7158 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
7159 Note that the immediate value in the first word is swapped.
7161 When producing a relocateable object file, R_MIPS16_26 is
7162 handled mostly like R_MIPS_26. In particular, the addend is
7163 stored as a straight 26-bit value in a 32-bit instruction.
7164 (gas makes life simpler for itself by never adjusting a
7165 R_MIPS16_26 reloc to be against a section, so the addend is
7166 always zero). However, the 32 bit instruction is stored as 2
7167 16-bit values, rather than a single 32-bit value. In a
7168 big-endian file, the result is the same; in a little-endian
7169 file, the two 16-bit halves of the 32 bit value are swapped.
7170 This is so that a disassembler can recognize the jal
7173 When doing a final link, R_MIPS16_26 is treated as a 32 bit
7174 instruction stored as two 16-bit values. The addend A is the
7175 contents of the targ26 field. The calculation is the same as
7176 R_MIPS_26. When storing the calculated value, reorder the
7177 immediate value as shown above, and don't forget to store the
7178 value as two 16-bit values.
7180 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
7184 +--------+----------------------+
7188 +--------+----------------------+
7191 +----------+------+-------------+
7195 +----------+--------------------+
7196 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
7197 ((sub1 << 16) | sub2)).
7199 When producing a relocateable object file, the calculation is
7200 (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
7201 When producing a fully linked file, the calculation is
7202 let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
7203 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
7205 if (!info->relocateable)
7206 /* Shuffle the bits according to the formula above. */
7207 value = (((value & 0x1f0000) << 5)
7208 | ((value & 0x3e00000) >> 5)
7209 | (value & 0xffff));
7211 else if (r_type == R_MIPS16_GPREL)
7213 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
7214 mode. A typical instruction will have a format like this:
7216 +--------------+--------------------------------+
7217 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
7218 +--------------+--------------------------------+
7219 ! Major ! rx ! ry ! Imm 4:0 !
7220 +--------------+--------------------------------+
7222 EXTEND is the five bit value 11110. Major is the instruction
7225 This is handled exactly like R_MIPS_GPREL16, except that the
7226 addend is retrieved and stored as shown in this diagram; that
7227 is, the Imm fields above replace the V-rel16 field.
7229 All we need to do here is shuffle the bits appropriately. As
7230 above, the two 16-bit halves must be swapped on a
7231 little-endian system. */
7232 value = (((value & 0x7e0) << 16)
7233 | ((value & 0xf800) << 5)
7237 /* Set the field. */
7238 x |= (value & howto->dst_mask);
7240 /* If required, turn JAL into JALX. */
7244 bfd_vma opcode = x >> 26;
7245 bfd_vma jalx_opcode;
7247 /* Check to see if the opcode is already JAL or JALX. */
7248 if (r_type == R_MIPS16_26)
7250 ok = ((opcode == 0x6) || (opcode == 0x7));
7255 ok = ((opcode == 0x3) || (opcode == 0x1d));
7259 /* If the opcode is not JAL or JALX, there's a problem. */
7262 (*_bfd_error_handler)
7263 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
7264 bfd_archive_filename (input_bfd),
7265 input_section->name,
7266 (unsigned long) relocation->r_offset);
7267 bfd_set_error (bfd_error_bad_value);
7271 /* Make this the JALX opcode. */
7272 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
7275 /* Swap the high- and low-order 16 bits on little-endian systems
7276 when doing a MIPS16 relocation. */
7277 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
7278 && bfd_little_endian (input_bfd))
7279 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
7281 /* Put the value into the output. */
7282 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
7286 /* Returns true if SECTION is a MIPS16 stub section. */
7289 mips_elf_stub_section_p (abfd, section)
7290 bfd *abfd ATTRIBUTE_UNUSED;
7293 const char *name = bfd_get_section_name (abfd, section);
7295 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
7296 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
7297 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
7300 /* Relocate a MIPS ELF section. */
7303 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
7304 contents, relocs, local_syms, local_sections)
7306 struct bfd_link_info *info;
7308 asection *input_section;
7310 Elf_Internal_Rela *relocs;
7311 Elf_Internal_Sym *local_syms;
7312 asection **local_sections;
7314 Elf_Internal_Rela *rel;
7315 const Elf_Internal_Rela *relend;
7317 boolean use_saved_addend_p = false;
7318 struct elf_backend_data *bed;
7320 bed = get_elf_backend_data (output_bfd);
7321 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
7322 for (rel = relocs; rel < relend; ++rel)
7326 reloc_howto_type *howto;
7327 boolean require_jalx;
7328 /* True if the relocation is a RELA relocation, rather than a
7330 boolean rela_relocation_p = true;
7331 unsigned int r_type = ELF32_R_TYPE (rel->r_info);
7332 const char * msg = (const char *) NULL;
7334 /* Find the relocation howto for this relocation. */
7335 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7337 /* Some 32-bit code uses R_MIPS_64. In particular, people use
7338 64-bit code, but make sure all their addresses are in the
7339 lowermost or uppermost 32-bit section of the 64-bit address
7340 space. Thus, when they use an R_MIPS_64 they mean what is
7341 usually meant by R_MIPS_32, with the exception that the
7342 stored value is sign-extended to 64 bits. */
7343 howto = elf_mips_howto_table_rel + R_MIPS_32;
7345 /* On big-endian systems, we need to lie about the position
7347 if (bfd_big_endian (input_bfd))
7351 howto = mips_rtype_to_howto (r_type);
7353 if (!use_saved_addend_p)
7355 Elf_Internal_Shdr *rel_hdr;
7357 /* If these relocations were originally of the REL variety,
7358 we must pull the addend out of the field that will be
7359 relocated. Otherwise, we simply use the contents of the
7360 RELA relocation. To determine which flavor or relocation
7361 this is, we depend on the fact that the INPUT_SECTION's
7362 REL_HDR is read before its REL_HDR2. */
7363 rel_hdr = &elf_section_data (input_section)->rel_hdr;
7364 if ((size_t) (rel - relocs)
7365 >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
7366 rel_hdr = elf_section_data (input_section)->rel_hdr2;
7367 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
7369 /* Note that this is a REL relocation. */
7370 rela_relocation_p = false;
7372 /* Get the addend, which is stored in the input file. */
7373 addend = mips_elf_obtain_contents (howto,
7377 addend &= howto->src_mask;
7379 /* For some kinds of relocations, the ADDEND is a
7380 combination of the addend stored in two different
7382 if (r_type == R_MIPS_HI16
7383 || r_type == R_MIPS_GNU_REL_HI16
7384 || (r_type == R_MIPS_GOT16
7385 && mips_elf_local_relocation_p (input_bfd, rel,
7386 local_sections, false)))
7389 const Elf_Internal_Rela *lo16_relocation;
7390 reloc_howto_type *lo16_howto;
7393 /* The combined value is the sum of the HI16 addend,
7394 left-shifted by sixteen bits, and the LO16
7395 addend, sign extended. (Usually, the code does
7396 a `lui' of the HI16 value, and then an `addiu' of
7399 Scan ahead to find a matching LO16 relocation. */
7400 if (r_type == R_MIPS_GNU_REL_HI16)
7401 lo = R_MIPS_GNU_REL_LO16;
7405 = mips_elf_next_relocation (lo, rel, relend);
7406 if (lo16_relocation == NULL)
7409 /* Obtain the addend kept there. */
7410 lo16_howto = mips_rtype_to_howto (lo);
7411 l = mips_elf_obtain_contents (lo16_howto,
7413 input_bfd, contents);
7414 l &= lo16_howto->src_mask;
7415 l = mips_elf_sign_extend (l, 16);
7419 /* Compute the combined addend. */
7422 /* If PC-relative, subtract the difference between the
7423 address of the LO part of the reloc and the address of
7424 the HI part. The relocation is relative to the LO
7425 part, but mips_elf_calculate_relocation() doesn't know
7426 it address or the difference from the HI part, so
7427 we subtract that difference here. See also the
7428 comment in mips_elf_calculate_relocation(). */
7429 if (r_type == R_MIPS_GNU_REL_HI16)
7430 addend -= (lo16_relocation->r_offset - rel->r_offset);
7432 else if (r_type == R_MIPS16_GPREL)
7434 /* The addend is scrambled in the object file. See
7435 mips_elf_perform_relocation for details on the
7437 addend = (((addend & 0x1f0000) >> 5)
7438 | ((addend & 0x7e00000) >> 16)
7443 addend = rel->r_addend;
7446 if (info->relocateable)
7448 Elf_Internal_Sym *sym;
7449 unsigned long r_symndx;
7451 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)
7452 && bfd_big_endian (input_bfd))
7455 /* Since we're just relocating, all we need to do is copy
7456 the relocations back out to the object file, unless
7457 they're against a section symbol, in which case we need
7458 to adjust by the section offset, or unless they're GP
7459 relative in which case we need to adjust by the amount
7460 that we're adjusting GP in this relocateable object. */
7462 if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections,
7464 /* There's nothing to do for non-local relocations. */
7467 if (r_type == R_MIPS16_GPREL
7468 || r_type == R_MIPS_GPREL16
7469 || r_type == R_MIPS_GPREL32
7470 || r_type == R_MIPS_LITERAL)
7471 addend -= (_bfd_get_gp_value (output_bfd)
7472 - _bfd_get_gp_value (input_bfd));
7473 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
7474 || r_type == R_MIPS_GNU_REL16_S2)
7475 /* The addend is stored without its two least
7476 significant bits (which are always zero.) In a
7477 non-relocateable link, calculate_relocation will do
7478 this shift; here, we must do it ourselves. */
7481 r_symndx = ELF32_R_SYM (rel->r_info);
7482 sym = local_syms + r_symndx;
7483 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7484 /* Adjust the addend appropriately. */
7485 addend += local_sections[r_symndx]->output_offset;
7487 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
7488 then we only want to write out the high-order 16 bits.
7489 The subsequent R_MIPS_LO16 will handle the low-order bits. */
7490 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
7491 || r_type == R_MIPS_GNU_REL_HI16)
7492 addend = mips_elf_high (addend);
7493 /* If the relocation is for an R_MIPS_26 relocation, then
7494 the two low-order bits are not stored in the object file;
7495 they are implicitly zero. */
7496 else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
7497 || r_type == R_MIPS_GNU_REL16_S2)
7500 if (rela_relocation_p)
7501 /* If this is a RELA relocation, just update the addend.
7502 We have to cast away constness for REL. */
7503 rel->r_addend = addend;
7506 /* Otherwise, we have to write the value back out. Note
7507 that we use the source mask, rather than the
7508 destination mask because the place to which we are
7509 writing will be source of the addend in the final
7511 addend &= howto->src_mask;
7513 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7514 /* See the comment above about using R_MIPS_64 in the 32-bit
7515 ABI. Here, we need to update the addend. It would be
7516 possible to get away with just using the R_MIPS_32 reloc
7517 but for endianness. */
7523 if (addend & ((bfd_vma) 1 << 31))
7525 sign_bits = ((bfd_vma) 1 << 32) - 1;
7532 /* If we don't know that we have a 64-bit type,
7533 do two separate stores. */
7534 if (bfd_big_endian (input_bfd))
7536 /* Store the sign-bits (which are most significant)
7538 low_bits = sign_bits;
7544 high_bits = sign_bits;
7546 bfd_put_32 (input_bfd, low_bits,
7547 contents + rel->r_offset);
7548 bfd_put_32 (input_bfd, high_bits,
7549 contents + rel->r_offset + 4);
7553 if (!mips_elf_perform_relocation (info, howto, rel, addend,
7554 input_bfd, input_section,
7559 /* Go on to the next relocation. */
7563 /* In the N32 and 64-bit ABIs there may be multiple consecutive
7564 relocations for the same offset. In that case we are
7565 supposed to treat the output of each relocation as the addend
7567 if (rel + 1 < relend
7568 && rel->r_offset == rel[1].r_offset
7569 && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
7570 use_saved_addend_p = true;
7572 use_saved_addend_p = false;
7574 /* Figure out what value we are supposed to relocate. */
7575 switch (mips_elf_calculate_relocation (output_bfd,
7588 case bfd_reloc_continue:
7589 /* There's nothing to do. */
7592 case bfd_reloc_undefined:
7593 /* mips_elf_calculate_relocation already called the
7594 undefined_symbol callback. There's no real point in
7595 trying to perform the relocation at this point, so we
7596 just skip ahead to the next relocation. */
7599 case bfd_reloc_notsupported:
7600 msg = _("internal error: unsupported relocation error");
7601 info->callbacks->warning
7602 (info, msg, name, input_bfd, input_section, rel->r_offset);
7605 case bfd_reloc_overflow:
7606 if (use_saved_addend_p)
7607 /* Ignore overflow until we reach the last relocation for
7608 a given location. */
7612 BFD_ASSERT (name != NULL);
7613 if (! ((*info->callbacks->reloc_overflow)
7614 (info, name, howto->name, (bfd_vma) 0,
7615 input_bfd, input_section, rel->r_offset)))
7628 /* If we've got another relocation for the address, keep going
7629 until we reach the last one. */
7630 if (use_saved_addend_p)
7636 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
7637 /* See the comment above about using R_MIPS_64 in the 32-bit
7638 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
7639 that calculated the right value. Now, however, we
7640 sign-extend the 32-bit result to 64-bits, and store it as a
7641 64-bit value. We are especially generous here in that we
7642 go to extreme lengths to support this usage on systems with
7643 only a 32-bit VMA. */
7649 if (value & ((bfd_vma) 1 << 31))
7651 sign_bits = ((bfd_vma) 1 << 32) - 1;
7658 /* If we don't know that we have a 64-bit type,
7659 do two separate stores. */
7660 if (bfd_big_endian (input_bfd))
7662 /* Undo what we did above. */
7664 /* Store the sign-bits (which are most significant)
7666 low_bits = sign_bits;
7672 high_bits = sign_bits;
7674 bfd_put_32 (input_bfd, low_bits,
7675 contents + rel->r_offset);
7676 bfd_put_32 (input_bfd, high_bits,
7677 contents + rel->r_offset + 4);
7681 /* Actually perform the relocation. */
7682 if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
7683 input_section, contents,
7691 /* This hook function is called before the linker writes out a global
7692 symbol. We mark symbols as small common if appropriate. This is
7693 also where we undo the increment of the value for a mips16 symbol. */
7696 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
7697 bfd *abfd ATTRIBUTE_UNUSED;
7698 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7699 const char *name ATTRIBUTE_UNUSED;
7700 Elf_Internal_Sym *sym;
7701 asection *input_sec;
7703 /* If we see a common symbol, which implies a relocatable link, then
7704 if a symbol was small common in an input file, mark it as small
7705 common in the output file. */
7706 if (sym->st_shndx == SHN_COMMON
7707 && strcmp (input_sec->name, ".scommon") == 0)
7708 sym->st_shndx = SHN_MIPS_SCOMMON;
7710 if (sym->st_other == STO_MIPS16
7711 && (sym->st_value & 1) != 0)
7717 /* Functions for the dynamic linker. */
7719 /* The name of the dynamic interpreter. This is put in the .interp
7722 #define ELF_DYNAMIC_INTERPRETER(abfd) \
7723 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
7724 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
7725 : "/usr/lib/libc.so.1")
7727 /* Create dynamic sections when linking against a dynamic object. */
7730 _bfd_mips_elf_create_dynamic_sections (abfd, info)
7732 struct bfd_link_info *info;
7734 struct elf_link_hash_entry *h;
7736 register asection *s;
7737 const char * const *namep;
7739 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7740 | SEC_LINKER_CREATED | SEC_READONLY);
7742 /* Mips ABI requests the .dynamic section to be read only. */
7743 s = bfd_get_section_by_name (abfd, ".dynamic");
7746 if (! bfd_set_section_flags (abfd, s, flags))
7750 /* We need to create .got section. */
7751 if (! mips_elf_create_got_section (abfd, info))
7754 /* Create the .msym section on IRIX6. It is used by the dynamic
7755 linker to speed up dynamic relocations, and to avoid computing
7756 the ELF hash for symbols. */
7757 if (IRIX_COMPAT (abfd) == ict_irix6
7758 && !mips_elf_create_msym_section (abfd))
7761 /* Create .stub section. */
7762 if (bfd_get_section_by_name (abfd,
7763 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
7765 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
7767 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
7768 || ! bfd_set_section_alignment (abfd, s,
7769 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7773 if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
7775 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
7777 s = bfd_make_section (abfd, ".rld_map");
7779 || ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY)
7780 || ! bfd_set_section_alignment (abfd, s,
7781 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7785 /* On IRIX5, we adjust add some additional symbols and change the
7786 alignments of several sections. There is no ABI documentation
7787 indicating that this is necessary on IRIX6, nor any evidence that
7788 the linker takes such action. */
7789 if (IRIX_COMPAT (abfd) == ict_irix5)
7791 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
7794 if (! (_bfd_generic_link_add_one_symbol
7795 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
7796 (bfd_vma) 0, (const char *) NULL, false,
7797 get_elf_backend_data (abfd)->collect,
7798 (struct bfd_link_hash_entry **) &h)))
7800 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7801 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7802 h->type = STT_SECTION;
7804 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7808 /* We need to create a .compact_rel section. */
7809 if (SGI_COMPAT (abfd))
7811 if (!mips_elf_create_compact_rel_section (abfd, info))
7815 /* Change aligments of some sections. */
7816 s = bfd_get_section_by_name (abfd, ".hash");
7818 bfd_set_section_alignment (abfd, s, 4);
7819 s = bfd_get_section_by_name (abfd, ".dynsym");
7821 bfd_set_section_alignment (abfd, s, 4);
7822 s = bfd_get_section_by_name (abfd, ".dynstr");
7824 bfd_set_section_alignment (abfd, s, 4);
7825 s = bfd_get_section_by_name (abfd, ".reginfo");
7827 bfd_set_section_alignment (abfd, s, 4);
7828 s = bfd_get_section_by_name (abfd, ".dynamic");
7830 bfd_set_section_alignment (abfd, s, 4);
7836 if (SGI_COMPAT (abfd))
7838 if (!(_bfd_generic_link_add_one_symbol
7839 (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
7840 (bfd_vma) 0, (const char *) NULL, false,
7841 get_elf_backend_data (abfd)->collect,
7842 (struct bfd_link_hash_entry **) &h)))
7847 /* For normal mips it is _DYNAMIC_LINKING. */
7848 if (!(_bfd_generic_link_add_one_symbol
7849 (info, abfd, "_DYNAMIC_LINKING", BSF_GLOBAL,
7850 bfd_abs_section_ptr, (bfd_vma) 0, (const char *) NULL, false,
7851 get_elf_backend_data (abfd)->collect,
7852 (struct bfd_link_hash_entry **) &h)))
7855 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7856 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7857 h->type = STT_SECTION;
7859 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7862 if (! mips_elf_hash_table (info)->use_rld_obj_head)
7864 /* __rld_map is a four byte word located in the .data section
7865 and is filled in by the rtld to contain a pointer to
7866 the _r_debug structure. Its symbol value will be set in
7867 mips_elf_finish_dynamic_symbol. */
7868 s = bfd_get_section_by_name (abfd, ".rld_map");
7869 BFD_ASSERT (s != NULL);
7872 if (SGI_COMPAT (abfd))
7874 if (!(_bfd_generic_link_add_one_symbol
7875 (info, abfd, "__rld_map", BSF_GLOBAL, s,
7876 (bfd_vma) 0, (const char *) NULL, false,
7877 get_elf_backend_data (abfd)->collect,
7878 (struct bfd_link_hash_entry **) &h)))
7883 /* For normal mips the symbol is __RLD_MAP. */
7884 if (!(_bfd_generic_link_add_one_symbol
7885 (info, abfd, "__RLD_MAP", BSF_GLOBAL, s,
7886 (bfd_vma) 0, (const char *) NULL, false,
7887 get_elf_backend_data (abfd)->collect,
7888 (struct bfd_link_hash_entry **) &h)))
7891 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7892 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7893 h->type = STT_OBJECT;
7895 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
7903 /* Create the .compact_rel section. */
7906 mips_elf_create_compact_rel_section (abfd, info)
7908 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7911 register asection *s;
7913 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
7915 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
7918 s = bfd_make_section (abfd, ".compact_rel");
7920 || ! bfd_set_section_flags (abfd, s, flags)
7921 || ! bfd_set_section_alignment (abfd, s,
7922 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7925 s->_raw_size = sizeof (Elf32_External_compact_rel);
7931 /* Create the .got section to hold the global offset table. */
7934 mips_elf_create_got_section (abfd, info)
7936 struct bfd_link_info *info;
7939 register asection *s;
7940 struct elf_link_hash_entry *h;
7941 struct mips_got_info *g;
7944 /* This function may be called more than once. */
7945 if (mips_elf_got_section (abfd))
7948 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7949 | SEC_LINKER_CREATED);
7951 s = bfd_make_section (abfd, ".got");
7953 || ! bfd_set_section_flags (abfd, s, flags)
7954 || ! bfd_set_section_alignment (abfd, s, 4))
7957 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
7958 linker script because we don't want to define the symbol if we
7959 are not creating a global offset table. */
7961 if (! (_bfd_generic_link_add_one_symbol
7962 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
7963 (bfd_vma) 0, (const char *) NULL, false,
7964 get_elf_backend_data (abfd)->collect,
7965 (struct bfd_link_hash_entry **) &h)))
7967 h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
7968 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
7969 h->type = STT_OBJECT;
7972 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
7975 /* The first several global offset table entries are reserved. */
7976 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
7978 amt = sizeof (struct mips_got_info);
7979 g = (struct mips_got_info *) bfd_alloc (abfd, amt);
7982 g->global_gotsym = NULL;
7983 g->local_gotno = MIPS_RESERVED_GOTNO;
7984 g->assigned_gotno = MIPS_RESERVED_GOTNO;
7985 if (elf_section_data (s) == NULL)
7987 amt = sizeof (struct bfd_elf_section_data);
7988 s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
7989 if (elf_section_data (s) == NULL)
7992 elf_section_data (s)->tdata = (PTR) g;
7993 elf_section_data (s)->this_hdr.sh_flags
7994 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
7999 /* Returns the .msym section for ABFD, creating it if it does not
8000 already exist. Returns NULL to indicate error. */
8003 mips_elf_create_msym_section (abfd)
8008 s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
8011 s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
8013 || !bfd_set_section_flags (abfd, s,
8017 | SEC_LINKER_CREATED
8019 || !bfd_set_section_alignment (abfd, s,
8020 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
8027 /* Add room for N relocations to the .rel.dyn section in ABFD. */
8030 mips_elf_allocate_dynamic_relocations (abfd, n)
8036 s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
8037 BFD_ASSERT (s != NULL);
8039 if (s->_raw_size == 0)
8041 /* Make room for a null element. */
8042 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
8045 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
8048 /* Look through the relocs for a section during the first phase, and
8049 allocate space in the global offset table. */
8052 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
8054 struct bfd_link_info *info;
8056 const Elf_Internal_Rela *relocs;
8060 Elf_Internal_Shdr *symtab_hdr;
8061 struct elf_link_hash_entry **sym_hashes;
8062 struct mips_got_info *g;
8064 const Elf_Internal_Rela *rel;
8065 const Elf_Internal_Rela *rel_end;
8068 struct elf_backend_data *bed;
8070 if (info->relocateable)
8073 dynobj = elf_hash_table (info)->dynobj;
8074 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8075 sym_hashes = elf_sym_hashes (abfd);
8076 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
8078 /* Check for the mips16 stub sections. */
8080 name = bfd_get_section_name (abfd, sec);
8081 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
8083 unsigned long r_symndx;
8085 /* Look at the relocation information to figure out which symbol
8088 r_symndx = ELF32_R_SYM (relocs->r_info);
8090 if (r_symndx < extsymoff
8091 || sym_hashes[r_symndx - extsymoff] == NULL)
8095 /* This stub is for a local symbol. This stub will only be
8096 needed if there is some relocation in this BFD, other
8097 than a 16 bit function call, which refers to this symbol. */
8098 for (o = abfd->sections; o != NULL; o = o->next)
8100 Elf_Internal_Rela *sec_relocs;
8101 const Elf_Internal_Rela *r, *rend;
8103 /* We can ignore stub sections when looking for relocs. */
8104 if ((o->flags & SEC_RELOC) == 0
8105 || o->reloc_count == 0
8106 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
8107 sizeof FN_STUB - 1) == 0
8108 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
8109 sizeof CALL_STUB - 1) == 0
8110 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
8111 sizeof CALL_FP_STUB - 1) == 0)
8114 sec_relocs = (_bfd_elf32_link_read_relocs
8115 (abfd, o, (PTR) NULL,
8116 (Elf_Internal_Rela *) NULL,
8117 info->keep_memory));
8118 if (sec_relocs == NULL)
8121 rend = sec_relocs + o->reloc_count;
8122 for (r = sec_relocs; r < rend; r++)
8123 if (ELF32_R_SYM (r->r_info) == r_symndx
8124 && ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
8127 if (! info->keep_memory)
8136 /* There is no non-call reloc for this stub, so we do
8137 not need it. Since this function is called before
8138 the linker maps input sections to output sections, we
8139 can easily discard it by setting the SEC_EXCLUDE
8141 sec->flags |= SEC_EXCLUDE;
8145 /* Record this stub in an array of local symbol stubs for
8147 if (elf_tdata (abfd)->local_stubs == NULL)
8149 unsigned long symcount;
8153 if (elf_bad_symtab (abfd))
8154 symcount = NUM_SHDR_ENTRIES (symtab_hdr);
8156 symcount = symtab_hdr->sh_info;
8157 amt = symcount * sizeof (asection *);
8158 n = (asection **) bfd_zalloc (abfd, amt);
8161 elf_tdata (abfd)->local_stubs = n;
8164 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
8166 /* We don't need to set mips16_stubs_seen in this case.
8167 That flag is used to see whether we need to look through
8168 the global symbol table for stubs. We don't need to set
8169 it here, because we just have a local stub. */
8173 struct mips_elf_link_hash_entry *h;
8175 h = ((struct mips_elf_link_hash_entry *)
8176 sym_hashes[r_symndx - extsymoff]);
8178 /* H is the symbol this stub is for. */
8181 mips_elf_hash_table (info)->mips16_stubs_seen = true;
8184 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
8185 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
8187 unsigned long r_symndx;
8188 struct mips_elf_link_hash_entry *h;
8191 /* Look at the relocation information to figure out which symbol
8194 r_symndx = ELF32_R_SYM (relocs->r_info);
8196 if (r_symndx < extsymoff
8197 || sym_hashes[r_symndx - extsymoff] == NULL)
8199 /* This stub was actually built for a static symbol defined
8200 in the same file. We assume that all static symbols in
8201 mips16 code are themselves mips16, so we can simply
8202 discard this stub. Since this function is called before
8203 the linker maps input sections to output sections, we can
8204 easily discard it by setting the SEC_EXCLUDE flag. */
8205 sec->flags |= SEC_EXCLUDE;
8209 h = ((struct mips_elf_link_hash_entry *)
8210 sym_hashes[r_symndx - extsymoff]);
8212 /* H is the symbol this stub is for. */
8214 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
8215 loc = &h->call_fp_stub;
8217 loc = &h->call_stub;
8219 /* If we already have an appropriate stub for this function, we
8220 don't need another one, so we can discard this one. Since
8221 this function is called before the linker maps input sections
8222 to output sections, we can easily discard it by setting the
8223 SEC_EXCLUDE flag. We can also discard this section if we
8224 happen to already know that this is a mips16 function; it is
8225 not necessary to check this here, as it is checked later, but
8226 it is slightly faster to check now. */
8227 if (*loc != NULL || h->root.other == STO_MIPS16)
8229 sec->flags |= SEC_EXCLUDE;
8234 mips_elf_hash_table (info)->mips16_stubs_seen = true;
8244 sgot = mips_elf_got_section (dynobj);
8249 BFD_ASSERT (elf_section_data (sgot) != NULL);
8250 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8251 BFD_ASSERT (g != NULL);
8256 bed = get_elf_backend_data (abfd);
8257 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
8258 for (rel = relocs; rel < rel_end; ++rel)
8260 unsigned long r_symndx;
8261 unsigned int r_type;
8262 struct elf_link_hash_entry *h;
8264 r_symndx = ELF32_R_SYM (rel->r_info);
8265 r_type = ELF32_R_TYPE (rel->r_info);
8267 if (r_symndx < extsymoff)
8269 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
8271 (*_bfd_error_handler)
8272 (_("%s: Malformed reloc detected for section %s"),
8273 bfd_archive_filename (abfd), name);
8274 bfd_set_error (bfd_error_bad_value);
8279 h = sym_hashes[r_symndx - extsymoff];
8281 /* This may be an indirect symbol created because of a version. */
8284 while (h->root.type == bfd_link_hash_indirect)
8285 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8289 /* Some relocs require a global offset table. */
8290 if (dynobj == NULL || sgot == NULL)
8296 case R_MIPS_CALL_HI16:
8297 case R_MIPS_CALL_LO16:
8298 case R_MIPS_GOT_HI16:
8299 case R_MIPS_GOT_LO16:
8300 case R_MIPS_GOT_PAGE:
8301 case R_MIPS_GOT_OFST:
8302 case R_MIPS_GOT_DISP:
8304 elf_hash_table (info)->dynobj = dynobj = abfd;
8305 if (! mips_elf_create_got_section (dynobj, info))
8307 g = mips_elf_got_info (dynobj, &sgot);
8314 && (info->shared || h != NULL)
8315 && (sec->flags & SEC_ALLOC) != 0)
8316 elf_hash_table (info)->dynobj = dynobj = abfd;
8324 if (!h && (r_type == R_MIPS_CALL_LO16
8325 || r_type == R_MIPS_GOT_LO16
8326 || r_type == R_MIPS_GOT_DISP))
8328 /* We may need a local GOT entry for this relocation. We
8329 don't count R_MIPS_GOT_PAGE because we can estimate the
8330 maximum number of pages needed by looking at the size of
8331 the segment. Similar comments apply to R_MIPS_GOT16 and
8332 R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
8333 R_MIPS_CALL_HI16 because these are always followed by an
8334 R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
8336 This estimation is very conservative since we can merge
8337 duplicate entries in the GOT. In order to be less
8338 conservative, we could actually build the GOT here,
8339 rather than in relocate_section. */
8341 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
8349 (*_bfd_error_handler)
8350 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
8351 bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
8352 bfd_set_error (bfd_error_bad_value);
8357 case R_MIPS_CALL_HI16:
8358 case R_MIPS_CALL_LO16:
8361 /* This symbol requires a global offset table entry. */
8362 if (!mips_elf_record_global_got_symbol (h, info, g))
8365 /* We need a stub, not a plt entry for the undefined
8366 function. But we record it as if it needs plt. See
8367 elf_adjust_dynamic_symbol in elflink.h. */
8368 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
8374 case R_MIPS_GOT_HI16:
8375 case R_MIPS_GOT_LO16:
8376 case R_MIPS_GOT_DISP:
8377 /* This symbol requires a global offset table entry. */
8378 if (h && !mips_elf_record_global_got_symbol (h, info, g))
8385 if ((info->shared || h != NULL)
8386 && (sec->flags & SEC_ALLOC) != 0)
8390 const char *dname = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
8392 sreloc = bfd_get_section_by_name (dynobj, dname);
8395 sreloc = bfd_make_section (dynobj, dname);
8397 || ! bfd_set_section_flags (dynobj, sreloc,
8402 | SEC_LINKER_CREATED
8404 || ! bfd_set_section_alignment (dynobj, sreloc,
8409 #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
8412 /* When creating a shared object, we must copy these
8413 reloc types into the output file as R_MIPS_REL32
8414 relocs. We make room for this reloc in the
8415 .rel.dyn reloc section. */
8416 mips_elf_allocate_dynamic_relocations (dynobj, 1);
8417 if ((sec->flags & MIPS_READONLY_SECTION)
8418 == MIPS_READONLY_SECTION)
8419 /* We tell the dynamic linker that there are
8420 relocations against the text segment. */
8421 info->flags |= DF_TEXTREL;
8425 struct mips_elf_link_hash_entry *hmips;
8427 /* We only need to copy this reloc if the symbol is
8428 defined in a dynamic object. */
8429 hmips = (struct mips_elf_link_hash_entry *) h;
8430 ++hmips->possibly_dynamic_relocs;
8431 if ((sec->flags & MIPS_READONLY_SECTION)
8432 == MIPS_READONLY_SECTION)
8433 /* We need it to tell the dynamic linker if there
8434 are relocations against the text segment. */
8435 hmips->readonly_reloc = true;
8438 /* Even though we don't directly need a GOT entry for
8439 this symbol, a symbol must have a dynamic symbol
8440 table index greater that DT_MIPS_GOTSYM if there are
8441 dynamic relocations against it. */
8443 && !mips_elf_record_global_got_symbol (h, info, g))
8447 if (SGI_COMPAT (abfd))
8448 mips_elf_hash_table (info)->compact_rel_size +=
8449 sizeof (Elf32_External_crinfo);
8453 case R_MIPS_GPREL16:
8454 case R_MIPS_LITERAL:
8455 case R_MIPS_GPREL32:
8456 if (SGI_COMPAT (abfd))
8457 mips_elf_hash_table (info)->compact_rel_size +=
8458 sizeof (Elf32_External_crinfo);
8461 /* This relocation describes the C++ object vtable hierarchy.
8462 Reconstruct it for later use during GC. */
8463 case R_MIPS_GNU_VTINHERIT:
8464 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
8468 /* This relocation describes which C++ vtable entries are actually
8469 used. Record for later use during GC. */
8470 case R_MIPS_GNU_VTENTRY:
8471 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
8479 /* We must not create a stub for a symbol that has relocations
8480 related to taking the function's address. */
8486 struct mips_elf_link_hash_entry *mh;
8488 mh = (struct mips_elf_link_hash_entry *) h;
8489 mh->no_fn_stub = true;
8493 case R_MIPS_CALL_HI16:
8494 case R_MIPS_CALL_LO16:
8498 /* If this reloc is not a 16 bit call, and it has a global
8499 symbol, then we will need the fn_stub if there is one.
8500 References from a stub section do not count. */
8502 && r_type != R_MIPS16_26
8503 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
8504 sizeof FN_STUB - 1) != 0
8505 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
8506 sizeof CALL_STUB - 1) != 0
8507 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
8508 sizeof CALL_FP_STUB - 1) != 0)
8510 struct mips_elf_link_hash_entry *mh;
8512 mh = (struct mips_elf_link_hash_entry *) h;
8513 mh->need_fn_stub = true;
8520 /* Return the section that should be marked against GC for a given
8524 _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
8526 struct bfd_link_info *info ATTRIBUTE_UNUSED;
8527 Elf_Internal_Rela *rel;
8528 struct elf_link_hash_entry *h;
8529 Elf_Internal_Sym *sym;
8531 /* ??? Do mips16 stub sections need to be handled special? */
8535 switch (ELF32_R_TYPE (rel->r_info))
8537 case R_MIPS_GNU_VTINHERIT:
8538 case R_MIPS_GNU_VTENTRY:
8542 switch (h->root.type)
8544 case bfd_link_hash_defined:
8545 case bfd_link_hash_defweak:
8546 return h->root.u.def.section;
8548 case bfd_link_hash_common:
8549 return h->root.u.c.p->section;
8558 return bfd_section_from_elf_index (abfd, sym->st_shndx);
8564 /* Update the got entry reference counts for the section being removed. */
8567 _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
8568 bfd *abfd ATTRIBUTE_UNUSED;
8569 struct bfd_link_info *info ATTRIBUTE_UNUSED;
8570 asection *sec ATTRIBUTE_UNUSED;
8571 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
8574 Elf_Internal_Shdr *symtab_hdr;
8575 struct elf_link_hash_entry **sym_hashes;
8576 bfd_signed_vma *local_got_refcounts;
8577 const Elf_Internal_Rela *rel, *relend;
8578 unsigned long r_symndx;
8579 struct elf_link_hash_entry *h;
8581 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8582 sym_hashes = elf_sym_hashes (abfd);
8583 local_got_refcounts = elf_local_got_refcounts (abfd);
8585 relend = relocs + sec->reloc_count;
8586 for (rel = relocs; rel < relend; rel++)
8587 switch (ELF32_R_TYPE (rel->r_info))
8591 case R_MIPS_CALL_HI16:
8592 case R_MIPS_CALL_LO16:
8593 case R_MIPS_GOT_HI16:
8594 case R_MIPS_GOT_LO16:
8595 /* ??? It would seem that the existing MIPS code does no sort
8596 of reference counting or whatnot on its GOT and PLT entries,
8597 so it is not possible to garbage collect them at this time. */
8608 /* Copy data from a MIPS ELF indirect symbol to its direct symbol,
8609 hiding the old indirect symbol. Process additional relocation
8610 information. Also called for weakdefs, in which case we just let
8611 _bfd_elf_link_hash_copy_indirect copy the flags for us. */
8614 _bfd_mips_elf_copy_indirect_symbol (dir, ind)
8615 struct elf_link_hash_entry *dir, *ind;
8617 struct mips_elf_link_hash_entry *dirmips, *indmips;
8619 _bfd_elf_link_hash_copy_indirect (dir, ind);
8621 if (ind->root.type != bfd_link_hash_indirect)
8624 dirmips = (struct mips_elf_link_hash_entry *) dir;
8625 indmips = (struct mips_elf_link_hash_entry *) ind;
8626 dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs;
8627 if (indmips->readonly_reloc)
8628 dirmips->readonly_reloc = true;
8629 if (dirmips->min_dyn_reloc_index == 0
8630 || (indmips->min_dyn_reloc_index != 0
8631 && indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index))
8632 dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index;
8633 if (indmips->no_fn_stub)
8634 dirmips->no_fn_stub = true;
8637 /* Adjust a symbol defined by a dynamic object and referenced by a
8638 regular object. The current definition is in some section of the
8639 dynamic object, but we're not including those sections. We have to
8640 change the definition to something the rest of the link can
8644 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
8645 struct bfd_link_info *info;
8646 struct elf_link_hash_entry *h;
8649 struct mips_elf_link_hash_entry *hmips;
8652 dynobj = elf_hash_table (info)->dynobj;
8654 /* Make sure we know what is going on here. */
8655 BFD_ASSERT (dynobj != NULL
8656 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
8657 || h->weakdef != NULL
8658 || ((h->elf_link_hash_flags
8659 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8660 && (h->elf_link_hash_flags
8661 & ELF_LINK_HASH_REF_REGULAR) != 0
8662 && (h->elf_link_hash_flags
8663 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
8665 /* If this symbol is defined in a dynamic object, we need to copy
8666 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
8668 hmips = (struct mips_elf_link_hash_entry *) h;
8669 if (! info->relocateable
8670 && hmips->possibly_dynamic_relocs != 0
8671 && (h->root.type == bfd_link_hash_defweak
8672 || (h->elf_link_hash_flags
8673 & ELF_LINK_HASH_DEF_REGULAR) == 0))
8675 mips_elf_allocate_dynamic_relocations (dynobj,
8676 hmips->possibly_dynamic_relocs);
8677 if (hmips->readonly_reloc)
8678 /* We tell the dynamic linker that there are relocations
8679 against the text segment. */
8680 info->flags |= DF_TEXTREL;
8683 /* For a function, create a stub, if allowed. */
8684 if (! hmips->no_fn_stub
8685 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
8687 if (! elf_hash_table (info)->dynamic_sections_created)
8690 /* If this symbol is not defined in a regular file, then set
8691 the symbol to the stub location. This is required to make
8692 function pointers compare as equal between the normal
8693 executable and the shared library. */
8694 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
8696 /* We need .stub section. */
8697 s = bfd_get_section_by_name (dynobj,
8698 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8699 BFD_ASSERT (s != NULL);
8701 h->root.u.def.section = s;
8702 h->root.u.def.value = s->_raw_size;
8704 /* XXX Write this stub address somewhere. */
8705 h->plt.offset = s->_raw_size;
8707 /* Make room for this stub code. */
8708 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
8710 /* The last half word of the stub will be filled with the index
8711 of this symbol in .dynsym section. */
8715 else if ((h->type == STT_FUNC)
8716 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
8718 /* This will set the entry for this symbol in the GOT to 0, and
8719 the dynamic linker will take care of this. */
8720 h->root.u.def.value = 0;
8724 /* If this is a weak symbol, and there is a real definition, the
8725 processor independent code will have arranged for us to see the
8726 real definition first, and we can just use the same value. */
8727 if (h->weakdef != NULL)
8729 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
8730 || h->weakdef->root.type == bfd_link_hash_defweak);
8731 h->root.u.def.section = h->weakdef->root.u.def.section;
8732 h->root.u.def.value = h->weakdef->root.u.def.value;
8736 /* This is a reference to a symbol defined by a dynamic object which
8737 is not a function. */
8742 /* This function is called after all the input files have been read,
8743 and the input sections have been assigned to output sections. We
8744 check for any mips16 stub sections that we can discard. */
8746 static boolean mips_elf_check_mips16_stubs
8747 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
8750 _bfd_mips_elf_always_size_sections (output_bfd, info)
8752 struct bfd_link_info *info;
8756 /* The .reginfo section has a fixed size. */
8757 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
8759 bfd_set_section_size (output_bfd, ri,
8760 (bfd_size_type) sizeof (Elf32_External_RegInfo));
8762 if (info->relocateable
8763 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
8766 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
8767 mips_elf_check_mips16_stubs,
8773 /* Check the mips16 stubs for a particular symbol, and see if we can
8777 mips_elf_check_mips16_stubs (h, data)
8778 struct mips_elf_link_hash_entry *h;
8779 PTR data ATTRIBUTE_UNUSED;
8781 if (h->fn_stub != NULL
8782 && ! h->need_fn_stub)
8784 /* We don't need the fn_stub; the only references to this symbol
8785 are 16 bit calls. Clobber the size to 0 to prevent it from
8786 being included in the link. */
8787 h->fn_stub->_raw_size = 0;
8788 h->fn_stub->_cooked_size = 0;
8789 h->fn_stub->flags &= ~SEC_RELOC;
8790 h->fn_stub->reloc_count = 0;
8791 h->fn_stub->flags |= SEC_EXCLUDE;
8794 if (h->call_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_stub->_raw_size = 0;
8801 h->call_stub->_cooked_size = 0;
8802 h->call_stub->flags &= ~SEC_RELOC;
8803 h->call_stub->reloc_count = 0;
8804 h->call_stub->flags |= SEC_EXCLUDE;
8807 if (h->call_fp_stub != NULL
8808 && h->root.other == STO_MIPS16)
8810 /* We don't need the call_stub; this is a 16 bit function, so
8811 calls from other 16 bit functions are OK. Clobber the size
8812 to 0 to prevent it from being included in the link. */
8813 h->call_fp_stub->_raw_size = 0;
8814 h->call_fp_stub->_cooked_size = 0;
8815 h->call_fp_stub->flags &= ~SEC_RELOC;
8816 h->call_fp_stub->reloc_count = 0;
8817 h->call_fp_stub->flags |= SEC_EXCLUDE;
8823 /* Set the sizes of the dynamic sections. */
8826 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
8828 struct bfd_link_info *info;
8833 struct mips_got_info *g = NULL;
8835 dynobj = elf_hash_table (info)->dynobj;
8836 BFD_ASSERT (dynobj != NULL);
8838 if (elf_hash_table (info)->dynamic_sections_created)
8840 /* Set the contents of the .interp section to the interpreter. */
8843 s = bfd_get_section_by_name (dynobj, ".interp");
8844 BFD_ASSERT (s != NULL);
8846 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
8848 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
8852 /* The check_relocs and adjust_dynamic_symbol entry points have
8853 determined the sizes of the various dynamic sections. Allocate
8856 for (s = dynobj->sections; s != NULL; s = s->next)
8861 /* It's OK to base decisions on the section name, because none
8862 of the dynobj section names depend upon the input files. */
8863 name = bfd_get_section_name (dynobj, s);
8865 if ((s->flags & SEC_LINKER_CREATED) == 0)
8870 if (strncmp (name, ".rel", 4) == 0)
8872 if (s->_raw_size == 0)
8874 /* We only strip the section if the output section name
8875 has the same name. Otherwise, there might be several
8876 input sections for this output section. FIXME: This
8877 code is probably not needed these days anyhow, since
8878 the linker now does not create empty output sections. */
8879 if (s->output_section != NULL
8881 bfd_get_section_name (s->output_section->owner,
8882 s->output_section)) == 0)
8887 const char *outname;
8890 /* If this relocation section applies to a read only
8891 section, then we probably need a DT_TEXTREL entry.
8892 If the relocation section is .rel.dyn, we always
8893 assert a DT_TEXTREL entry rather than testing whether
8894 there exists a relocation to a read only section or
8896 outname = bfd_get_section_name (output_bfd,
8898 target = bfd_get_section_by_name (output_bfd, outname + 4);
8900 && (target->flags & SEC_READONLY) != 0
8901 && (target->flags & SEC_ALLOC) != 0)
8903 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
8906 /* We use the reloc_count field as a counter if we need
8907 to copy relocs into the output file. */
8909 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
8913 else if (strncmp (name, ".got", 4) == 0)
8916 bfd_size_type loadable_size = 0;
8917 bfd_size_type local_gotno;
8920 BFD_ASSERT (elf_section_data (s) != NULL);
8921 g = (struct mips_got_info *) elf_section_data (s)->tdata;
8922 BFD_ASSERT (g != NULL);
8924 /* Calculate the total loadable size of the output. That
8925 will give us the maximum number of GOT_PAGE entries
8927 for (sub = info->input_bfds; sub; sub = sub->link_next)
8929 asection *subsection;
8931 for (subsection = sub->sections;
8933 subsection = subsection->next)
8935 if ((subsection->flags & SEC_ALLOC) == 0)
8937 loadable_size += ((subsection->_raw_size + 0xf)
8938 &~ (bfd_size_type) 0xf);
8941 loadable_size += MIPS_FUNCTION_STUB_SIZE;
8943 /* Assume there are two loadable segments consisting of
8944 contiguous sections. Is 5 enough? */
8945 local_gotno = (loadable_size >> 16) + 5;
8946 if (IRIX_COMPAT (output_bfd) == ict_irix6)
8947 /* It's possible we will need GOT_PAGE entries as well as
8948 GOT16 entries. Often, these will be able to share GOT
8949 entries, but not always. */
8952 g->local_gotno += local_gotno;
8953 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
8955 /* There has to be a global GOT entry for every symbol with
8956 a dynamic symbol table index of DT_MIPS_GOTSYM or
8957 higher. Therefore, it make sense to put those symbols
8958 that need GOT entries at the end of the symbol table. We
8960 if (!mips_elf_sort_hash_table (info, 1))
8963 if (g->global_gotsym != NULL)
8964 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
8966 /* If there are no global symbols, or none requiring
8967 relocations, then GLOBAL_GOTSYM will be NULL. */
8969 g->global_gotno = i;
8970 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
8972 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
8974 /* Irix rld assumes that the function stub isn't at the end
8975 of .text section. So put a dummy. XXX */
8976 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
8978 else if (! info->shared
8979 && ! mips_elf_hash_table (info)->use_rld_obj_head
8980 && strncmp (name, ".rld_map", 8) == 0)
8982 /* We add a room for __rld_map. It will be filled in by the
8983 rtld to contain a pointer to the _r_debug structure. */
8986 else if (SGI_COMPAT (output_bfd)
8987 && strncmp (name, ".compact_rel", 12) == 0)
8988 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
8989 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
8991 s->_raw_size = (sizeof (Elf32_External_Msym)
8992 * (elf_hash_table (info)->dynsymcount
8993 + bfd_count_sections (output_bfd)));
8994 else if (strncmp (name, ".init", 5) != 0)
8996 /* It's not one of our sections, so don't allocate space. */
9002 _bfd_strip_section_from_output (info, s);
9006 /* Allocate memory for the section contents. */
9007 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
9008 if (s->contents == NULL && s->_raw_size != 0)
9010 bfd_set_error (bfd_error_no_memory);
9015 if (elf_hash_table (info)->dynamic_sections_created)
9017 /* Add some entries to the .dynamic section. We fill in the
9018 values later, in elf_mips_finish_dynamic_sections, but we
9019 must add the entries now so that we get the correct size for
9020 the .dynamic section. The DT_DEBUG entry is filled in by the
9021 dynamic linker and used by the debugger. */
9024 /* SGI object has the equivalence of DT_DEBUG in the
9025 DT_MIPS_RLD_MAP entry. */
9026 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
9028 if (!SGI_COMPAT (output_bfd))
9030 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
9036 /* Shared libraries on traditional mips have DT_DEBUG. */
9037 if (!SGI_COMPAT (output_bfd))
9039 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
9044 if (reltext && SGI_COMPAT (output_bfd))
9045 info->flags |= DF_TEXTREL;
9047 if ((info->flags & DF_TEXTREL) != 0)
9049 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
9053 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
9056 if (bfd_get_section_by_name (dynobj,
9057 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
9059 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
9062 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
9065 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
9069 if (SGI_COMPAT (output_bfd))
9071 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
9075 if (SGI_COMPAT (output_bfd))
9077 if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
9081 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
9083 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
9086 s = bfd_get_section_by_name (dynobj, ".liblist");
9087 BFD_ASSERT (s != NULL);
9089 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
9093 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
9096 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
9100 /* Time stamps in executable files are a bad idea. */
9101 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
9106 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
9111 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
9115 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
9118 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
9121 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
9124 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
9127 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
9130 if (IRIX_COMPAT (dynobj) == ict_irix5
9131 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
9134 if (IRIX_COMPAT (dynobj) == ict_irix6
9135 && (bfd_get_section_by_name
9136 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
9137 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
9140 if (bfd_get_section_by_name (dynobj,
9141 MIPS_ELF_MSYM_SECTION_NAME (dynobj))
9142 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
9149 /* If NAME is one of the special IRIX6 symbols defined by the linker,
9150 adjust it appropriately now. */
9153 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
9154 bfd *abfd ATTRIBUTE_UNUSED;
9156 Elf_Internal_Sym *sym;
9158 /* The linker script takes care of providing names and values for
9159 these, but we must place them into the right sections. */
9160 static const char* const text_section_symbols[] = {
9163 "__dso_displacement",
9165 "__program_header_table",
9169 static const char* const data_section_symbols[] = {
9177 const char* const *p;
9180 for (i = 0; i < 2; ++i)
9181 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
9184 if (strcmp (*p, name) == 0)
9186 /* All of these symbols are given type STT_SECTION by the
9188 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9190 /* The IRIX linker puts these symbols in special sections. */
9192 sym->st_shndx = SHN_MIPS_TEXT;
9194 sym->st_shndx = SHN_MIPS_DATA;
9200 /* Finish up dynamic symbol handling. We set the contents of various
9201 dynamic sections here. */
9204 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
9206 struct bfd_link_info *info;
9207 struct elf_link_hash_entry *h;
9208 Elf_Internal_Sym *sym;
9214 struct mips_got_info *g;
9216 struct mips_elf_link_hash_entry *mh;
9218 dynobj = elf_hash_table (info)->dynobj;
9219 gval = sym->st_value;
9220 mh = (struct mips_elf_link_hash_entry *) h;
9222 if (h->plt.offset != (bfd_vma) -1)
9226 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
9228 /* This symbol has a stub. Set it up. */
9230 BFD_ASSERT (h->dynindx != -1);
9232 s = bfd_get_section_by_name (dynobj,
9233 MIPS_ELF_STUB_SECTION_NAME (dynobj));
9234 BFD_ASSERT (s != NULL);
9236 /* Fill the stub. */
9238 bfd_put_32 (output_bfd, (bfd_vma) STUB_LW (output_bfd), p);
9240 bfd_put_32 (output_bfd, (bfd_vma) STUB_MOVE (output_bfd), p);
9243 /* FIXME: Can h->dynindex be more than 64K? */
9244 if (h->dynindx & 0xffff0000)
9247 bfd_put_32 (output_bfd, (bfd_vma) STUB_JALR, p);
9249 bfd_put_32 (output_bfd, (bfd_vma) STUB_LI16 (output_bfd) + h->dynindx, p);
9251 BFD_ASSERT (h->plt.offset <= s->_raw_size);
9252 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
9254 /* Mark the symbol as undefined. plt.offset != -1 occurs
9255 only for the referenced symbol. */
9256 sym->st_shndx = SHN_UNDEF;
9258 /* The run-time linker uses the st_value field of the symbol
9259 to reset the global offset table entry for this external
9260 to its stub address when unlinking a shared object. */
9261 gval = s->output_section->vma + s->output_offset + h->plt.offset;
9262 sym->st_value = gval;
9265 BFD_ASSERT (h->dynindx != -1
9266 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
9268 sgot = mips_elf_got_section (dynobj);
9269 BFD_ASSERT (sgot != NULL);
9270 BFD_ASSERT (elf_section_data (sgot) != NULL);
9271 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
9272 BFD_ASSERT (g != NULL);
9274 /* Run through the global symbol table, creating GOT entries for all
9275 the symbols that need them. */
9276 if (g->global_gotsym != NULL
9277 && h->dynindx >= g->global_gotsym->dynindx)
9283 value = sym->st_value;
9286 /* For an entity defined in a shared object, this will be
9287 NULL. (For functions in shared objects for
9288 which we have created stubs, ST_VALUE will be non-NULL.
9289 That's because such the functions are now no longer defined
9290 in a shared object.) */
9292 if (info->shared && h->root.type == bfd_link_hash_undefined)
9295 value = h->root.u.def.value;
9297 offset = mips_elf_global_got_index (dynobj, h);
9298 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
9301 /* Create a .msym entry, if appropriate. */
9302 smsym = bfd_get_section_by_name (dynobj,
9303 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
9306 Elf32_Internal_Msym msym;
9308 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
9309 /* It is undocumented what the `1' indicates, but IRIX6 uses
9311 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
9312 bfd_mips_elf_swap_msym_out
9314 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
9317 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
9318 name = h->root.root.string;
9319 if (strcmp (name, "_DYNAMIC") == 0
9320 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
9321 sym->st_shndx = SHN_ABS;
9322 else if (strcmp (name, "_DYNAMIC_LINK") == 0
9323 || strcmp (name, "_DYNAMIC_LINKING") == 0)
9325 sym->st_shndx = SHN_ABS;
9326 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9329 else if (strcmp (name, "_gp_disp") == 0)
9331 sym->st_shndx = SHN_ABS;
9332 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9333 sym->st_value = elf_gp (output_bfd);
9335 else if (SGI_COMPAT (output_bfd))
9337 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
9338 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
9340 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9341 sym->st_other = STO_PROTECTED;
9343 sym->st_shndx = SHN_MIPS_DATA;
9345 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
9347 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
9348 sym->st_other = STO_PROTECTED;
9349 sym->st_value = mips_elf_hash_table (info)->procedure_count;
9350 sym->st_shndx = SHN_ABS;
9352 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
9354 if (h->type == STT_FUNC)
9355 sym->st_shndx = SHN_MIPS_TEXT;
9356 else if (h->type == STT_OBJECT)
9357 sym->st_shndx = SHN_MIPS_DATA;
9361 /* Handle the IRIX6-specific symbols. */
9362 if (IRIX_COMPAT (output_bfd) == ict_irix6)
9363 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
9367 if (! mips_elf_hash_table (info)->use_rld_obj_head
9368 && (strcmp (name, "__rld_map") == 0
9369 || strcmp (name, "__RLD_MAP") == 0))
9371 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
9372 BFD_ASSERT (s != NULL);
9373 sym->st_value = s->output_section->vma + s->output_offset;
9374 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
9375 if (mips_elf_hash_table (info)->rld_value == 0)
9376 mips_elf_hash_table (info)->rld_value = sym->st_value;
9378 else if (mips_elf_hash_table (info)->use_rld_obj_head
9379 && strcmp (name, "__rld_obj_head") == 0)
9381 /* IRIX6 does not use a .rld_map section. */
9382 if (IRIX_COMPAT (output_bfd) == ict_irix5
9383 || IRIX_COMPAT (output_bfd) == ict_none)
9384 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
9386 mips_elf_hash_table (info)->rld_value = sym->st_value;
9390 /* If this is a mips16 symbol, force the value to be even. */
9391 if (sym->st_other == STO_MIPS16
9392 && (sym->st_value & 1) != 0)
9398 /* Finish up the dynamic sections. */
9401 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
9403 struct bfd_link_info *info;
9408 struct mips_got_info *g;
9410 dynobj = elf_hash_table (info)->dynobj;
9412 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9414 sgot = mips_elf_got_section (dynobj);
9419 BFD_ASSERT (elf_section_data (sgot) != NULL);
9420 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
9421 BFD_ASSERT (g != NULL);
9424 if (elf_hash_table (info)->dynamic_sections_created)
9428 BFD_ASSERT (sdyn != NULL);
9429 BFD_ASSERT (g != NULL);
9431 for (b = sdyn->contents;
9432 b < sdyn->contents + sdyn->_raw_size;
9433 b += MIPS_ELF_DYN_SIZE (dynobj))
9435 Elf_Internal_Dyn dyn;
9441 /* Read in the current dynamic entry. */
9442 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
9444 /* Assume that we're going to modify it and write it out. */
9450 s = (bfd_get_section_by_name
9452 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
9453 BFD_ASSERT (s != NULL);
9454 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
9458 /* Rewrite DT_STRSZ. */
9460 _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
9466 case DT_MIPS_CONFLICT:
9469 case DT_MIPS_LIBLIST:
9472 s = bfd_get_section_by_name (output_bfd, name);
9473 BFD_ASSERT (s != NULL);
9474 dyn.d_un.d_ptr = s->vma;
9477 case DT_MIPS_RLD_VERSION:
9478 dyn.d_un.d_val = 1; /* XXX */
9482 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
9485 case DT_MIPS_CONFLICTNO:
9487 elemsize = sizeof (Elf32_Conflict);
9490 case DT_MIPS_LIBLISTNO:
9492 elemsize = sizeof (Elf32_Lib);
9494 s = bfd_get_section_by_name (output_bfd, name);
9497 if (s->_cooked_size != 0)
9498 dyn.d_un.d_val = s->_cooked_size / elemsize;
9500 dyn.d_un.d_val = s->_raw_size / elemsize;
9506 case DT_MIPS_TIME_STAMP:
9507 time ((time_t *) &dyn.d_un.d_val);
9510 case DT_MIPS_ICHECKSUM:
9515 case DT_MIPS_IVERSION:
9520 case DT_MIPS_BASE_ADDRESS:
9521 s = output_bfd->sections;
9522 BFD_ASSERT (s != NULL);
9523 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
9526 case DT_MIPS_LOCAL_GOTNO:
9527 dyn.d_un.d_val = g->local_gotno;
9530 case DT_MIPS_UNREFEXTNO:
9531 /* The index into the dynamic symbol table which is the
9532 entry of the first external symbol that is not
9533 referenced within the same object. */
9534 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
9537 case DT_MIPS_GOTSYM:
9538 if (g->global_gotsym)
9540 dyn.d_un.d_val = g->global_gotsym->dynindx;
9543 /* In case if we don't have global got symbols we default
9544 to setting DT_MIPS_GOTSYM to the same value as
9545 DT_MIPS_SYMTABNO, so we just fall through. */
9547 case DT_MIPS_SYMTABNO:
9549 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
9550 s = bfd_get_section_by_name (output_bfd, name);
9551 BFD_ASSERT (s != NULL);
9553 if (s->_cooked_size != 0)
9554 dyn.d_un.d_val = s->_cooked_size / elemsize;
9556 dyn.d_un.d_val = s->_raw_size / elemsize;
9559 case DT_MIPS_HIPAGENO:
9560 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
9563 case DT_MIPS_RLD_MAP:
9564 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
9567 case DT_MIPS_OPTIONS:
9568 s = (bfd_get_section_by_name
9569 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
9570 dyn.d_un.d_ptr = s->vma;
9574 s = (bfd_get_section_by_name
9575 (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
9576 dyn.d_un.d_ptr = s->vma;
9585 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
9590 /* The first entry of the global offset table will be filled at
9591 runtime. The second entry will be used by some runtime loaders.
9592 This isn't the case of Irix rld. */
9593 if (sgot != NULL && sgot->_raw_size > 0)
9595 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
9596 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
9597 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
9601 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
9602 = MIPS_ELF_GOT_SIZE (output_bfd);
9607 Elf32_compact_rel cpt;
9609 /* ??? The section symbols for the output sections were set up in
9610 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
9611 symbols. Should we do so? */
9613 smsym = bfd_get_section_by_name (dynobj,
9614 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
9617 Elf32_Internal_Msym msym;
9619 msym.ms_hash_value = 0;
9620 msym.ms_info = ELF32_MS_INFO (0, 1);
9622 for (s = output_bfd->sections; s != NULL; s = s->next)
9624 long dynindx = elf_section_data (s)->dynindx;
9626 bfd_mips_elf_swap_msym_out
9628 (((Elf32_External_Msym *) smsym->contents)
9633 if (SGI_COMPAT (output_bfd))
9635 /* Write .compact_rel section out. */
9636 s = bfd_get_section_by_name (dynobj, ".compact_rel");
9640 cpt.num = s->reloc_count;
9642 cpt.offset = (s->output_section->filepos
9643 + sizeof (Elf32_External_compact_rel));
9646 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
9647 ((Elf32_External_compact_rel *)
9650 /* Clean up a dummy stub function entry in .text. */
9651 s = bfd_get_section_by_name (dynobj,
9652 MIPS_ELF_STUB_SECTION_NAME (dynobj));
9655 file_ptr dummy_offset;
9657 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
9658 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
9659 memset (s->contents + dummy_offset, 0,
9660 MIPS_FUNCTION_STUB_SIZE);
9665 /* We need to sort the entries of the dynamic relocation section. */
9667 if (!ABI_64_P (output_bfd))
9671 reldyn = bfd_get_section_by_name (dynobj,
9672 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
9673 if (reldyn != NULL && reldyn->reloc_count > 2)
9675 reldyn_sorting_bfd = output_bfd;
9676 qsort ((Elf32_External_Rel *) reldyn->contents + 1,
9677 (size_t) reldyn->reloc_count - 1,
9678 sizeof (Elf32_External_Rel), sort_dynamic_relocs);
9682 /* Clean up a first relocation in .rel.dyn. */
9683 s = bfd_get_section_by_name (dynobj,
9684 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
9685 if (s != NULL && s->_raw_size > 0)
9686 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
9692 /* Support for core dump NOTE sections */
9694 _bfd_elf32_mips_grok_prstatus (abfd, note)
9696 Elf_Internal_Note *note;
9699 unsigned int raw_size;
9701 switch (note->descsz)
9706 case 256: /* Linux/MIPS */
9708 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
9711 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9720 /* Make a ".reg/999" section. */
9721 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
9722 raw_size, note->descpos + offset);
9726 _bfd_elf32_mips_grok_psinfo (abfd, note)
9728 Elf_Internal_Note *note;
9730 switch (note->descsz)
9735 case 128: /* Linux/MIPS elf_prpsinfo */
9736 elf_tdata (abfd)->core_program
9737 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
9738 elf_tdata (abfd)->core_command
9739 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
9742 /* Note that for some reason, a spurious space is tacked
9743 onto the end of the args in some (at least one anyway)
9744 implementations, so strip it off if it exists. */
9747 char *command = elf_tdata (abfd)->core_command;
9748 int n = strlen (command);
9750 if (0 < n && command[n - 1] == ' ')
9751 command[n - 1] = '\0';
9760 _bfd_elf32_mips_discard_info (abfd, cookie, info)
9762 struct elf_reloc_cookie *cookie;
9763 struct bfd_link_info *info;
9766 struct elf_backend_data *bed = get_elf_backend_data (abfd);
9767 boolean ret = false;
9768 unsigned char *tdata;
9771 o = bfd_get_section_by_name (abfd, ".pdr");
9774 if (o->_raw_size == 0)
9776 if (o->_raw_size % PDR_SIZE != 0)
9778 if (o->output_section != NULL
9779 && bfd_is_abs_section (o->output_section))
9782 tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE);
9786 cookie->rels = _bfd_elf32_link_read_relocs (abfd, o, (PTR) NULL,
9787 (Elf_Internal_Rela *) NULL,
9795 cookie->rel = cookie->rels;
9797 cookie->rels + o->reloc_count * bed->s->int_rels_per_ext_rel;
9799 for (i = 0, skip = 0; i < o->_raw_size; i ++)
9801 if (_bfd_elf32_reloc_symbol_deleted_p (i * PDR_SIZE, cookie))
9810 elf_section_data (o)->tdata = tdata;
9811 o->_cooked_size = o->_raw_size - skip * PDR_SIZE;
9817 if (! info->keep_memory)
9818 free (cookie->rels);
9824 _bfd_elf32_mips_ignore_discarded_relocs (sec)
9827 if (strcmp (sec->name, ".pdr") == 0)
9833 _bfd_elf32_mips_write_section (output_bfd, sec, contents)
9838 bfd_byte *to, *from, *end;
9841 if (strcmp (sec->name, ".pdr") != 0)
9844 if (elf_section_data (sec)->tdata == NULL)
9848 end = contents + sec->_raw_size;
9849 for (from = contents, i = 0;
9851 from += PDR_SIZE, i++)
9853 if (((unsigned char *)elf_section_data (sec)->tdata)[i] == 1)
9856 memcpy (to, from, PDR_SIZE);
9859 bfd_set_section_contents (output_bfd, sec->output_section, contents,
9860 (file_ptr) sec->output_offset,
9865 /* Given a data section and an in-memory embedded reloc section, store
9866 relocation information into the embedded reloc section which can be
9867 used at runtime to relocate the data section. This is called by the
9868 linker when the --embedded-relocs switch is used. This is called
9869 after the add_symbols entry point has been called for all the
9870 objects, and before the final_link entry point is called. */
9873 bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
9875 struct bfd_link_info *info;
9880 Elf_Internal_Shdr *symtab_hdr;
9881 Elf_Internal_Shdr *shndx_hdr;
9882 Elf32_External_Sym *extsyms;
9883 Elf32_External_Sym *free_extsyms = NULL;
9884 Elf_External_Sym_Shndx *shndx_buf = NULL;
9885 Elf_Internal_Rela *internal_relocs;
9886 Elf_Internal_Rela *free_relocs = NULL;
9887 Elf_Internal_Rela *irel, *irelend;
9891 BFD_ASSERT (! info->relocateable);
9895 if (datasec->reloc_count == 0)
9898 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9899 /* Read this BFD's symbols if we haven't done so already, or get the cached
9900 copy if it exists. */
9901 if (symtab_hdr->contents != NULL)
9902 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
9905 /* Go get them off disk. */
9906 if (info->keep_memory)
9907 extsyms = ((Elf32_External_Sym *)
9908 bfd_alloc (abfd, symtab_hdr->sh_size));
9910 extsyms = ((Elf32_External_Sym *)
9911 bfd_malloc (symtab_hdr->sh_size));
9912 if (extsyms == NULL)
9914 if (! info->keep_memory)
9915 free_extsyms = extsyms;
9916 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
9917 || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
9918 != symtab_hdr->sh_size))
9920 if (info->keep_memory)
9921 symtab_hdr->contents = (unsigned char *) extsyms;
9924 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
9925 if (shndx_hdr->sh_size != 0)
9927 amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
9928 shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
9929 if (shndx_buf == NULL)
9931 if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
9932 || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
9936 /* Get a copy of the native relocations. */
9937 internal_relocs = (_bfd_elf32_link_read_relocs
9938 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
9939 info->keep_memory));
9940 if (internal_relocs == NULL)
9942 if (! info->keep_memory)
9943 free_relocs = internal_relocs;
9945 relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12);
9946 if (relsec->contents == NULL)
9949 p = relsec->contents;
9951 irelend = internal_relocs + datasec->reloc_count;
9953 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
9955 asection *targetsec;
9957 /* We are going to write a four byte longword into the runtime
9958 reloc section. The longword will be the address in the data
9959 section which must be relocated. It is followed by the name
9960 of the target section NUL-padded or truncated to 8
9963 /* We can only relocate absolute longword relocs at run time. */
9964 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) &&
9965 (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64))
9967 *errmsg = _("unsupported reloc type");
9968 bfd_set_error (bfd_error_bad_value);
9971 /* Get the target section referred to by the reloc. */
9972 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
9974 Elf32_External_Sym *esym;
9975 Elf_External_Sym_Shndx *shndx;
9976 Elf_Internal_Sym isym;
9978 /* A local symbol. */
9979 esym = extsyms + ELF32_R_SYM (irel->r_info);
9980 shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0);
9981 bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym);
9983 targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
9988 struct elf_link_hash_entry *h;
9990 /* An external symbol. */
9991 indx = ELF32_R_SYM (irel->r_info);
9992 h = elf_sym_hashes (abfd)[indx];
9995 * For some reason, in certain programs, the symbol will
9996 * not be in the hash table. It seems to happen when you
9997 * declare a static table of pointers to const external structures.
9998 * In this case, the relocs are relative to data, not
9999 * text, so just treating it like an undefined link
10000 * should be sufficient.
10002 BFD_ASSERT(h != NULL);
10003 if (h->root.type == bfd_link_hash_defined
10004 || h->root.type == bfd_link_hash_defweak)
10005 targetsec = h->root.u.def.section;
10010 * Set the low bit of the relocation offset if it's a MIPS64 reloc.
10011 * Relocations will always be on (at least) 32-bit boundaries.
10014 bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) +
10015 ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)),
10017 memset (p + 4, 0, 8);
10018 if (targetsec != NULL)
10019 strncpy (p + 4, targetsec->output_section->name, 8);
10022 if (shndx_buf != NULL)
10024 if (free_extsyms != NULL)
10025 free (free_extsyms);
10026 if (free_relocs != NULL)
10027 free (free_relocs);
10031 if (shndx_buf != NULL)
10033 if (free_extsyms != NULL)
10034 free (free_extsyms);
10035 if (free_relocs != NULL)
10036 free (free_relocs);
10040 /* This is almost identical to bfd_generic_get_... except that some
10041 MIPS relocations need to be handled specially. Sigh. */
10044 elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
10045 relocateable, symbols)
10047 struct bfd_link_info *link_info;
10048 struct bfd_link_order *link_order;
10050 boolean relocateable;
10053 /* Get enough memory to hold the stuff */
10054 bfd *input_bfd = link_order->u.indirect.section->owner;
10055 asection *input_section = link_order->u.indirect.section;
10057 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
10058 arelent **reloc_vector = NULL;
10061 if (reloc_size < 0)
10064 reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
10065 if (reloc_vector == NULL && reloc_size != 0)
10068 /* read in the section */
10069 if (!bfd_get_section_contents (input_bfd,
10073 input_section->_raw_size))
10076 /* We're not relaxing the section, so just copy the size info */
10077 input_section->_cooked_size = input_section->_raw_size;
10078 input_section->reloc_done = true;
10080 reloc_count = bfd_canonicalize_reloc (input_bfd,
10084 if (reloc_count < 0)
10087 if (reloc_count > 0)
10092 bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
10095 struct bfd_hash_entry *h;
10096 struct bfd_link_hash_entry *lh;
10097 /* Skip all this stuff if we aren't mixing formats. */
10098 if (abfd && input_bfd
10099 && abfd->xvec == input_bfd->xvec)
10103 h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
10104 lh = (struct bfd_link_hash_entry *) h;
10111 case bfd_link_hash_undefined:
10112 case bfd_link_hash_undefweak:
10113 case bfd_link_hash_common:
10116 case bfd_link_hash_defined:
10117 case bfd_link_hash_defweak:
10119 gp = lh->u.def.value;
10121 case bfd_link_hash_indirect:
10122 case bfd_link_hash_warning:
10124 /* @@FIXME ignoring warning for now */
10126 case bfd_link_hash_new:
10135 for (parent = reloc_vector; *parent != (arelent *) NULL;
10138 char *error_message = (char *) NULL;
10139 bfd_reloc_status_type r;
10141 /* Specific to MIPS: Deal with relocation types that require
10142 knowing the gp of the output bfd. */
10143 asymbol *sym = *(*parent)->sym_ptr_ptr;
10144 if (bfd_is_abs_section (sym->section) && abfd)
10146 /* The special_function wouldn't get called anyways. */
10148 else if (!gp_found)
10150 /* The gp isn't there; let the special function code
10151 fall over on its own. */
10153 else if ((*parent)->howto->special_function
10154 == _bfd_mips_elf_gprel16_reloc)
10156 /* bypass special_function call */
10157 r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
10158 relocateable, (PTR) data, gp);
10159 goto skip_bfd_perform_relocation;
10161 /* end mips specific stuff */
10163 r = bfd_perform_relocation (input_bfd,
10167 relocateable ? abfd : (bfd *) NULL,
10169 skip_bfd_perform_relocation:
10173 asection *os = input_section->output_section;
10175 /* A partial link, so keep the relocs */
10176 os->orelocation[os->reloc_count] = *parent;
10180 if (r != bfd_reloc_ok)
10184 case bfd_reloc_undefined:
10185 if (!((*link_info->callbacks->undefined_symbol)
10186 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
10187 input_bfd, input_section, (*parent)->address,
10191 case bfd_reloc_dangerous:
10192 BFD_ASSERT (error_message != (char *) NULL);
10193 if (!((*link_info->callbacks->reloc_dangerous)
10194 (link_info, error_message, input_bfd, input_section,
10195 (*parent)->address)))
10198 case bfd_reloc_overflow:
10199 if (!((*link_info->callbacks->reloc_overflow)
10200 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
10201 (*parent)->howto->name, (*parent)->addend,
10202 input_bfd, input_section, (*parent)->address)))
10205 case bfd_reloc_outofrange:
10214 if (reloc_vector != NULL)
10215 free (reloc_vector);
10219 if (reloc_vector != NULL)
10220 free (reloc_vector);
10224 #define bfd_elf32_bfd_get_relocated_section_contents \
10225 elf32_mips_get_relocated_section_contents
10227 /* ECOFF swapping routines. These are used when dealing with the
10228 .mdebug section, which is in the ECOFF debugging format. */
10229 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
10230 /* Symbol table magic number. */
10232 /* Alignment of debugging information. E.g., 4. */
10234 /* Sizes of external symbolic information. */
10235 sizeof (struct hdr_ext),
10236 sizeof (struct dnr_ext),
10237 sizeof (struct pdr_ext),
10238 sizeof (struct sym_ext),
10239 sizeof (struct opt_ext),
10240 sizeof (struct fdr_ext),
10241 sizeof (struct rfd_ext),
10242 sizeof (struct ext_ext),
10243 /* Functions to swap in external symbolic data. */
10252 _bfd_ecoff_swap_tir_in,
10253 _bfd_ecoff_swap_rndx_in,
10254 /* Functions to swap out external symbolic data. */
10255 ecoff_swap_hdr_out,
10256 ecoff_swap_dnr_out,
10257 ecoff_swap_pdr_out,
10258 ecoff_swap_sym_out,
10259 ecoff_swap_opt_out,
10260 ecoff_swap_fdr_out,
10261 ecoff_swap_rfd_out,
10262 ecoff_swap_ext_out,
10263 _bfd_ecoff_swap_tir_out,
10264 _bfd_ecoff_swap_rndx_out,
10265 /* Function to read in symbolic data. */
10266 _bfd_mips_elf_read_ecoff_info
10269 #define ELF_ARCH bfd_arch_mips
10270 #define ELF_MACHINE_CODE EM_MIPS
10272 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
10273 a value of 0x1000, and we are compatible. */
10274 #define ELF_MAXPAGESIZE 0x1000
10276 #define elf_backend_collect true
10277 #define elf_backend_type_change_ok true
10278 #define elf_backend_can_gc_sections true
10279 #define elf_info_to_howto mips_info_to_howto_rela
10280 #define elf_info_to_howto_rel mips_info_to_howto_rel
10281 #define elf_backend_sym_is_global mips_elf_sym_is_global
10282 #define elf_backend_object_p _bfd_mips_elf_object_p
10283 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
10284 #define elf_backend_section_processing _bfd_mips_elf_section_processing
10285 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
10286 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
10287 #define elf_backend_section_from_bfd_section \
10288 _bfd_mips_elf_section_from_bfd_section
10289 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
10290 #define elf_backend_link_output_symbol_hook \
10291 _bfd_mips_elf_link_output_symbol_hook
10292 #define elf_backend_create_dynamic_sections \
10293 _bfd_mips_elf_create_dynamic_sections
10294 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
10295 #define elf_backend_adjust_dynamic_symbol \
10296 _bfd_mips_elf_adjust_dynamic_symbol
10297 #define elf_backend_always_size_sections \
10298 _bfd_mips_elf_always_size_sections
10299 #define elf_backend_size_dynamic_sections \
10300 _bfd_mips_elf_size_dynamic_sections
10301 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
10302 #define elf_backend_finish_dynamic_symbol \
10303 _bfd_mips_elf_finish_dynamic_symbol
10304 #define elf_backend_finish_dynamic_sections \
10305 _bfd_mips_elf_finish_dynamic_sections
10306 #define elf_backend_final_write_processing \
10307 _bfd_mips_elf_final_write_processing
10308 #define elf_backend_additional_program_headers \
10309 _bfd_mips_elf_additional_program_headers
10310 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
10311 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
10312 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
10313 #define elf_backend_copy_indirect_symbol \
10314 _bfd_mips_elf_copy_indirect_symbol
10315 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
10316 #define elf_backend_grok_prstatus _bfd_elf32_mips_grok_prstatus
10317 #define elf_backend_grok_psinfo _bfd_elf32_mips_grok_psinfo
10318 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
10320 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
10321 #define elf_backend_plt_header_size 0
10322 #define elf_backend_may_use_rel_p 1
10323 #define elf_backend_may_use_rela_p 0
10324 #define elf_backend_default_use_rela_p 0
10325 #define elf_backend_sign_extend_vma true
10327 #define elf_backend_discard_info _bfd_elf32_mips_discard_info
10328 #define elf_backend_ignore_discarded_relocs \
10329 _bfd_elf32_mips_ignore_discarded_relocs
10330 #define elf_backend_write_section _bfd_elf32_mips_write_section
10332 #define bfd_elf32_bfd_is_local_label_name \
10333 mips_elf_is_local_label_name
10334 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
10335 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
10336 #define bfd_elf32_bfd_link_hash_table_create \
10337 _bfd_mips_elf_link_hash_table_create
10338 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
10339 #define bfd_elf32_bfd_merge_private_bfd_data \
10340 _bfd_mips_elf_merge_private_bfd_data
10341 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
10342 #define bfd_elf32_bfd_print_private_bfd_data \
10343 _bfd_mips_elf_print_private_bfd_data
10345 /* Support for SGI-ish mips targets. */
10346 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
10347 #define TARGET_LITTLE_NAME "elf32-littlemips"
10348 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
10349 #define TARGET_BIG_NAME "elf32-bigmips"
10351 #include "elf32-target.h"
10353 /* Support for traditional mips targets. */
10354 #define INCLUDED_TARGET_FILE /* More a type of flag. */
10356 #undef TARGET_LITTLE_SYM
10357 #undef TARGET_LITTLE_NAME
10358 #undef TARGET_BIG_SYM
10359 #undef TARGET_BIG_NAME
10361 #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
10362 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
10363 #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
10364 #define TARGET_BIG_NAME "elf32-tradbigmips"
10366 /* Include the target file again for this target */
10367 #include "elf32-target.h"
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