1 /* MIPS-specific support for 32-bit ELF
2 Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
4 Most of the information added by Ian Lance Taylor, Cygnus Support,
6 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
7 <mark@codesourcery.com>
9 This file is part of BFD, the Binary File Descriptor library.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
26 different MIPS ELF from other targets. This matters when linking.
27 This file supports both, switching at runtime. */
37 /* Get the ECOFF swapping routines. */
39 #include "coff/symconst.h"
40 #include "coff/internal.h"
41 #include "coff/ecoff.h"
42 #include "coff/mips.h"
44 #include "ecoffswap.h"
46 /* This structure is used to hold .got information when linking. It
47 is stored in the tdata field of the bfd_elf_section_data structure. */
51 /* The global symbol in the GOT with the lowest index in the dynamic
53 struct elf_link_hash_entry *global_gotsym;
54 /* The number of global .got entries. */
55 unsigned int global_gotno;
56 /* The number of local .got entries. */
57 unsigned int local_gotno;
58 /* The number of local .got entries we have used. */
59 unsigned int assigned_gotno;
62 /* The MIPS ELF linker needs additional information for each symbol in
63 the global hash table. */
65 struct mips_elf_link_hash_entry
67 struct elf_link_hash_entry root;
69 /* External symbol information. */
72 /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
74 unsigned int possibly_dynamic_relocs;
76 /* The index of the first dynamic relocation (in the .rel.dyn
77 section) against this symbol. */
78 unsigned int min_dyn_reloc_index;
80 /* If there is a stub that 32 bit functions should use to call this
81 16 bit function, this points to the section containing the stub. */
84 /* Whether we need the fn_stub; this is set if this symbol appears
85 in any relocs other than a 16 bit call. */
88 /* If there is a stub that 16 bit functions should use to call this
89 32 bit function, this points to the section containing the stub. */
92 /* This is like the call_stub field, but it is used if the function
93 being called returns a floating point value. */
94 asection *call_fp_stub;
97 static bfd_reloc_status_type mips32_64bit_reloc
98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
99 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
100 PARAMS ((bfd *, bfd_reloc_code_real_type));
101 static reloc_howto_type *mips_rtype_to_howto
102 PARAMS ((unsigned int));
103 static void mips_info_to_howto_rel
104 PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
105 static void mips_info_to_howto_rela
106 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
107 static void bfd_mips_elf32_swap_gptab_in
108 PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
109 static void bfd_mips_elf32_swap_gptab_out
110 PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
111 static void bfd_mips_elf_swap_msym_in
112 PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
113 static void bfd_mips_elf_swap_msym_out
114 PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
115 static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
116 static boolean mips_elf_create_procedure_table
117 PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
118 struct ecoff_debug_info *));
119 static INLINE int elf_mips_isa PARAMS ((flagword));
120 static INLINE int elf_mips_mach PARAMS ((flagword));
121 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
122 static boolean mips_elf_is_local_label_name
123 PARAMS ((bfd *, const char *));
124 static struct bfd_hash_entry *mips_elf_link_hash_newfunc
125 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
126 static int gptab_compare PARAMS ((const void *, const void *));
127 static void mips_elf_relocate_hi16
128 PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *,
130 static boolean mips_elf_relocate_got_local
131 PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *,
132 Elf_Internal_Rela *, bfd_byte *, bfd_vma));
133 static void mips_elf_relocate_global_got
134 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
135 static bfd_reloc_status_type mips16_jump_reloc
136 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
137 static bfd_reloc_status_type mips16_gprel_reloc
138 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
139 static boolean mips_elf_create_compact_rel_section
140 PARAMS ((bfd *, struct bfd_link_info *));
141 static boolean mips_elf_create_got_section
142 PARAMS ((bfd *, struct bfd_link_info *));
143 static bfd_reloc_status_type mips_elf_final_gp
144 PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
145 static bfd_byte *elf32_mips_get_relocated_section_contents
146 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
147 bfd_byte *, boolean, asymbol **));
148 static asection *mips_elf_create_msym_section
150 static void mips_elf_irix6_finish_dynamic_symbol
151 PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
152 static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
153 static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
154 static bfd_vma mips_elf_high PARAMS ((bfd_vma));
155 static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
156 static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
157 static bfd_vma mips_elf_global_got_index
158 PARAMS ((bfd *, struct elf_link_hash_entry *));
159 static bfd_vma mips_elf_local_got_index
160 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
161 static bfd_vma mips_elf_got_offset_from_index
162 PARAMS ((bfd *, bfd *, bfd_vma));
163 static boolean mips_elf_record_global_got_symbol
164 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
165 struct mips_got_info *));
166 static bfd_vma mips_elf_got_page
167 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
168 static boolean mips_elf_next_lo16_addend
169 PARAMS ((const Elf_Internal_Rela *, const Elf_Internal_Rela *, bfd_vma *));
170 static bfd_reloc_status_type mips_elf_calculate_relocation
171 PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
172 const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
173 Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
175 static bfd_vma mips_elf_obtain_contents
176 PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
177 static boolean mips_elf_perform_relocation
178 PARAMS ((struct bfd_link_info *, reloc_howto_type *,
179 const Elf_Internal_Rela *, bfd_vma,
180 bfd *, asection *, bfd_byte *, boolean));
181 static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
182 static boolean mips_elf_sort_hash_table_f
183 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
184 static boolean mips_elf_sort_hash_table
185 PARAMS ((struct bfd_link_info *, unsigned long));
186 static asection * mips_elf_got_section PARAMS ((bfd *));
187 static struct mips_got_info *mips_elf_got_info
188 PARAMS ((bfd *, asection **));
189 static boolean mips_elf_local_relocation_p
190 PARAMS ((bfd *, const Elf_Internal_Rela *, asection **));
191 static bfd_vma mips_elf_create_local_got_entry
192 PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
193 static bfd_vma mips_elf_got16_entry
194 PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
195 static unsigned int mips_elf_create_dynamic_relocation
196 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
197 long, bfd_vma, asection *));
198 static void mips_elf_allocate_dynamic_relocations
199 PARAMS ((bfd *, unsigned int));
200 static boolean mips_elf_stub_section_p
201 PARAMS ((bfd *, asection *));
203 /* The level of IRIX compatibility we're striving for. */
211 /* Nonzero if ABFD is using the N32 ABI. */
213 #define ABI_N32_P(abfd) \
214 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
216 /* Nonzero if ABFD is using the 64-bit ABI. FIXME: This is never
218 #define ABI_64_P(abfd) \
219 ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0)
221 /* What version of Irix we are trying to be compatible with. FIXME:
222 At the moment, we never generate "normal" MIPS ELF ABI executables;
223 we always use some version of Irix. */
225 #define IRIX_COMPAT(abfd) \
226 ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5)
228 /* Whether we are trying to be compatible with IRIX at all. */
230 #define SGI_COMPAT(abfd) \
231 (IRIX_COMPAT (abfd) != ict_none)
233 /* The name of the msym section. */
234 #define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym"
236 /* The name of the srdata section. */
237 #define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata"
239 /* The name of the options section. */
240 #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
241 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options")
243 /* The name of the stub section. */
244 #define MIPS_ELF_STUB_SECTION_NAME(abfd) \
245 (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub")
247 /* The name of the dynamic relocation section. */
248 #define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn"
250 /* The size of an external REL relocation. */
251 #define MIPS_ELF_REL_SIZE(abfd) \
252 (get_elf_backend_data (abfd)->s->sizeof_rel)
254 /* The size of an external dynamic table entry. */
255 #define MIPS_ELF_DYN_SIZE(abfd) \
256 (get_elf_backend_data (abfd)->s->sizeof_dyn)
258 /* The size of a GOT entry. */
259 #define MIPS_ELF_GOT_SIZE(abfd) \
260 (get_elf_backend_data (abfd)->s->arch_size / 8)
262 /* The size of a symbol-table entry. */
263 #define MIPS_ELF_SYM_SIZE(abfd) \
264 (get_elf_backend_data (abfd)->s->sizeof_sym)
266 /* The default alignment for sections, as a power of two. */
267 #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
268 (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
270 /* Get word-sized data. */
271 #define MIPS_ELF_GET_WORD(abfd, ptr) \
272 (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
274 /* Put out word-sized data. */
275 #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
277 ? bfd_put_64 (abfd, val, ptr) \
278 : bfd_put_32 (abfd, val, ptr))
280 /* Add a dynamic symbol table-entry. */
282 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
283 (ABI_64_P (elf_hash_table (info)->dynobj) \
284 ? bfd_elf64_add_dynamic_entry (info, tag, val) \
285 : bfd_elf32_add_dynamic_entry (info, tag, val))
287 #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
288 (ABI_64_P (elf_hash_table (info)->dynobj) \
289 ? (abort (), false) \
290 : bfd_elf32_add_dynamic_entry (info, tag, val))
293 /* The number of local .got entries we reserve. */
294 #define MIPS_RESERVED_GOTNO (2)
296 /* Instructions which appear in a stub. For some reason the stub is
297 slightly different on an SGI system. */
298 #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
299 #define STUB_LW(abfd) \
302 ? 0xdf998010 /* ld t9,0x8010(gp) */ \
303 : 0x8f998010) /* lw t9,0x8010(gp) */ \
304 : 0x8f998000) /* lw t9,0x8000(gp) */
305 #define STUB_MOVE 0x03e07825 /* move t7,ra */
306 #define STUB_JALR 0x0320f809 /* jal t9 */
307 #define STUB_LI16 0x34180000 /* ori t8,zero,0 */
308 #define MIPS_FUNCTION_STUB_SIZE (16)
311 /* We no longer try to identify particular sections for the .dynsym
312 section. When we do, we wind up crashing if there are other random
313 sections with relocations. */
315 /* Names of sections which appear in the .dynsym section in an Irix 5
318 static const char * const mips_elf_dynsym_sec_names[] =
331 #define SIZEOF_MIPS_DYNSYM_SECNAMES \
332 (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0])
334 /* The number of entries in mips_elf_dynsym_sec_names which go in the
337 #define MIPS_TEXT_DYNSYM_SECNO (3)
341 /* The names of the runtime procedure table symbols used on Irix 5. */
343 static const char * const mips_elf_dynsym_rtproc_names[] =
346 "_procedure_string_table",
347 "_procedure_table_size",
351 /* These structures are used to generate the .compact_rel section on
356 unsigned long id1; /* Always one? */
357 unsigned long num; /* Number of compact relocation entries. */
358 unsigned long id2; /* Always two? */
359 unsigned long offset; /* The file offset of the first relocation. */
360 unsigned long reserved0; /* Zero? */
361 unsigned long reserved1; /* Zero? */
370 bfd_byte reserved0[4];
371 bfd_byte reserved1[4];
372 } Elf32_External_compact_rel;
376 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
377 unsigned int rtype : 4; /* Relocation types. See below. */
378 unsigned int dist2to : 8;
379 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
380 unsigned long konst; /* KONST field. See below. */
381 unsigned long vaddr; /* VADDR to be relocated. */
386 unsigned int ctype : 1; /* 1: long 0: short format. See below. */
387 unsigned int rtype : 4; /* Relocation types. See below. */
388 unsigned int dist2to : 8;
389 unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
390 unsigned long konst; /* KONST field. See below. */
398 } Elf32_External_crinfo;
404 } Elf32_External_crinfo2;
406 /* These are the constants used to swap the bitfields in a crinfo. */
408 #define CRINFO_CTYPE (0x1)
409 #define CRINFO_CTYPE_SH (31)
410 #define CRINFO_RTYPE (0xf)
411 #define CRINFO_RTYPE_SH (27)
412 #define CRINFO_DIST2TO (0xff)
413 #define CRINFO_DIST2TO_SH (19)
414 #define CRINFO_RELVADDR (0x7ffff)
415 #define CRINFO_RELVADDR_SH (0)
417 /* A compact relocation info has long (3 words) or short (2 words)
418 formats. A short format doesn't have VADDR field and relvaddr
419 fields contains ((VADDR - vaddr of the previous entry) >> 2). */
420 #define CRF_MIPS_LONG 1
421 #define CRF_MIPS_SHORT 0
423 /* There are 4 types of compact relocation at least. The value KONST
424 has different meaning for each type:
427 CT_MIPS_REL32 Address in data
428 CT_MIPS_WORD Address in word (XXX)
429 CT_MIPS_GPHI_LO GP - vaddr
430 CT_MIPS_JMPAD Address to jump
433 #define CRT_MIPS_REL32 0xa
434 #define CRT_MIPS_WORD 0xb
435 #define CRT_MIPS_GPHI_LO 0xc
436 #define CRT_MIPS_JMPAD 0xd
438 #define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
439 #define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
440 #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
441 #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
443 static void bfd_elf32_swap_compact_rel_out
444 PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
445 static void bfd_elf32_swap_crinfo_out
446 PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
448 #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */
450 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
451 from smaller values. Start with zero, widen, *then* decrement. */
452 #define MINUS_ONE (((bfd_vma)0) - 1)
454 static reloc_howto_type elf_mips_howto_table[] =
457 HOWTO (R_MIPS_NONE, /* type */
459 0, /* size (0 = byte, 1 = short, 2 = long) */
461 false, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_MIPS_NONE", /* name */
466 false, /* partial_inplace */
469 false), /* pcrel_offset */
471 /* 16 bit relocation. */
472 HOWTO (R_MIPS_16, /* type */
474 1, /* size (0 = byte, 1 = short, 2 = long) */
476 false, /* pc_relative */
478 complain_overflow_bitfield, /* complain_on_overflow */
479 bfd_elf_generic_reloc, /* special_function */
480 "R_MIPS_16", /* name */
481 true, /* partial_inplace */
482 0xffff, /* src_mask */
483 0xffff, /* dst_mask */
484 false), /* pcrel_offset */
486 /* 32 bit relocation. */
487 HOWTO (R_MIPS_32, /* type */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
491 false, /* pc_relative */
493 complain_overflow_bitfield, /* complain_on_overflow */
494 bfd_elf_generic_reloc, /* special_function */
495 "R_MIPS_32", /* name */
496 true, /* partial_inplace */
497 0xffffffff, /* src_mask */
498 0xffffffff, /* dst_mask */
499 false), /* pcrel_offset */
501 /* 32 bit symbol relative relocation. */
502 HOWTO (R_MIPS_REL32, /* type */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
506 false, /* pc_relative */
508 complain_overflow_bitfield, /* complain_on_overflow */
509 bfd_elf_generic_reloc, /* special_function */
510 "R_MIPS_REL32", /* name */
511 true, /* partial_inplace */
512 0xffffffff, /* src_mask */
513 0xffffffff, /* dst_mask */
514 false), /* pcrel_offset */
516 /* 26 bit branch address. */
517 HOWTO (R_MIPS_26, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 false, /* pc_relative */
523 complain_overflow_dont, /* complain_on_overflow */
524 /* This needs complex overflow
525 detection, because the upper four
526 bits must match the PC. */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_MIPS_26", /* name */
529 true, /* partial_inplace */
530 0x3ffffff, /* src_mask */
531 0x3ffffff, /* dst_mask */
532 false), /* pcrel_offset */
534 /* High 16 bits of symbol value. */
535 HOWTO (R_MIPS_HI16, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 false, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 _bfd_mips_elf_hi16_reloc, /* special_function */
543 "R_MIPS_HI16", /* name */
544 true, /* partial_inplace */
545 0xffff, /* src_mask */
546 0xffff, /* dst_mask */
547 false), /* pcrel_offset */
549 /* Low 16 bits of symbol value. */
550 HOWTO (R_MIPS_LO16, /* type */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
554 false, /* pc_relative */
556 complain_overflow_dont, /* complain_on_overflow */
557 _bfd_mips_elf_lo16_reloc, /* special_function */
558 "R_MIPS_LO16", /* name */
559 true, /* partial_inplace */
560 0xffff, /* src_mask */
561 0xffff, /* dst_mask */
562 false), /* pcrel_offset */
564 /* GP relative reference. */
565 HOWTO (R_MIPS_GPREL16, /* type */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
569 false, /* pc_relative */
571 complain_overflow_signed, /* complain_on_overflow */
572 _bfd_mips_elf_gprel16_reloc, /* special_function */
573 "R_MIPS_GPREL16", /* name */
574 true, /* partial_inplace */
575 0xffff, /* src_mask */
576 0xffff, /* dst_mask */
577 false), /* pcrel_offset */
579 /* Reference to literal section. */
580 HOWTO (R_MIPS_LITERAL, /* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 false, /* pc_relative */
586 complain_overflow_signed, /* complain_on_overflow */
587 _bfd_mips_elf_gprel16_reloc, /* special_function */
588 "R_MIPS_LITERAL", /* name */
589 true, /* partial_inplace */
590 0xffff, /* src_mask */
591 0xffff, /* dst_mask */
592 false), /* pcrel_offset */
594 /* Reference to global offset table. */
595 HOWTO (R_MIPS_GOT16, /* type */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
599 false, /* pc_relative */
601 complain_overflow_signed, /* complain_on_overflow */
602 _bfd_mips_elf_got16_reloc, /* special_function */
603 "R_MIPS_GOT16", /* name */
604 false, /* partial_inplace */
606 0xffff, /* dst_mask */
607 false), /* pcrel_offset */
609 /* 16 bit PC relative reference. */
610 HOWTO (R_MIPS_PC16, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 true, /* pc_relative */
616 complain_overflow_signed, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_MIPS_PC16", /* name */
619 true, /* partial_inplace */
620 0xffff, /* src_mask */
621 0xffff, /* dst_mask */
622 false), /* pcrel_offset */
624 /* 16 bit call through global offset table. */
625 HOWTO (R_MIPS_CALL16, /* type */
627 2, /* size (0 = byte, 1 = short, 2 = long) */
629 false, /* pc_relative */
631 complain_overflow_signed, /* complain_on_overflow */
632 bfd_elf_generic_reloc, /* special_function */
633 "R_MIPS_CALL16", /* name */
634 false, /* partial_inplace */
636 0xffff, /* dst_mask */
637 false), /* pcrel_offset */
639 /* 32 bit GP relative reference. */
640 HOWTO (R_MIPS_GPREL32, /* type */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
644 false, /* pc_relative */
646 complain_overflow_bitfield, /* complain_on_overflow */
647 _bfd_mips_elf_gprel32_reloc, /* special_function */
648 "R_MIPS_GPREL32", /* name */
649 true, /* partial_inplace */
650 0xffffffff, /* src_mask */
651 0xffffffff, /* dst_mask */
652 false), /* pcrel_offset */
654 /* The remaining relocs are defined on Irix 5, although they are
655 not defined by the ABI. */
660 /* A 5 bit shift field. */
661 HOWTO (R_MIPS_SHIFT5, /* type */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
665 false, /* pc_relative */
667 complain_overflow_bitfield, /* complain_on_overflow */
668 bfd_elf_generic_reloc, /* special_function */
669 "R_MIPS_SHIFT5", /* name */
670 true, /* partial_inplace */
671 0x000007c0, /* src_mask */
672 0x000007c0, /* dst_mask */
673 false), /* pcrel_offset */
675 /* A 6 bit shift field. */
676 /* FIXME: This is not handled correctly; a special function is
677 needed to put the most significant bit in the right place. */
678 HOWTO (R_MIPS_SHIFT6, /* type */
680 2, /* size (0 = byte, 1 = short, 2 = long) */
682 false, /* pc_relative */
684 complain_overflow_bitfield, /* complain_on_overflow */
685 bfd_elf_generic_reloc, /* special_function */
686 "R_MIPS_SHIFT6", /* name */
687 true, /* partial_inplace */
688 0x000007c4, /* src_mask */
689 0x000007c4, /* dst_mask */
690 false), /* pcrel_offset */
692 /* A 64 bit relocation. */
693 HOWTO (R_MIPS_64, /* type */
695 4, /* size (0 = byte, 1 = short, 2 = long) */
697 false, /* pc_relative */
699 complain_overflow_bitfield, /* complain_on_overflow */
700 mips32_64bit_reloc, /* special_function */
701 "R_MIPS_64", /* name */
702 true, /* partial_inplace */
703 MINUS_ONE, /* src_mask */
704 MINUS_ONE, /* dst_mask */
705 false), /* pcrel_offset */
707 /* Displacement in the global offset table. */
708 HOWTO (R_MIPS_GOT_DISP, /* 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_GOT_DISP", /* name */
717 true, /* partial_inplace */
718 0x0000ffff, /* src_mask */
719 0x0000ffff, /* dst_mask */
720 false), /* pcrel_offset */
722 /* Displacement to page pointer in the global offset table. */
723 HOWTO (R_MIPS_GOT_PAGE, /* type */
725 2, /* size (0 = byte, 1 = short, 2 = long) */
727 false, /* pc_relative */
729 complain_overflow_bitfield, /* complain_on_overflow */
730 bfd_elf_generic_reloc, /* special_function */
731 "R_MIPS_GOT_PAGE", /* name */
732 true, /* partial_inplace */
733 0x0000ffff, /* src_mask */
734 0x0000ffff, /* dst_mask */
735 false), /* pcrel_offset */
737 /* Offset from page pointer in the global offset table. */
738 HOWTO (R_MIPS_GOT_OFST, /* type */
740 2, /* size (0 = byte, 1 = short, 2 = long) */
742 false, /* pc_relative */
744 complain_overflow_bitfield, /* complain_on_overflow */
745 bfd_elf_generic_reloc, /* special_function */
746 "R_MIPS_GOT_OFST", /* name */
747 true, /* partial_inplace */
748 0x0000ffff, /* src_mask */
749 0x0000ffff, /* dst_mask */
750 false), /* pcrel_offset */
752 /* High 16 bits of displacement in global offset table. */
753 HOWTO (R_MIPS_GOT_HI16, /* type */
755 2, /* size (0 = byte, 1 = short, 2 = long) */
757 false, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 bfd_elf_generic_reloc, /* special_function */
761 "R_MIPS_GOT_HI16", /* name */
762 true, /* partial_inplace */
763 0x0000ffff, /* src_mask */
764 0x0000ffff, /* dst_mask */
765 false), /* pcrel_offset */
767 /* Low 16 bits of displacement in global offset table. */
768 HOWTO (R_MIPS_GOT_LO16, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 false, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_MIPS_GOT_LO16", /* name */
777 true, /* partial_inplace */
778 0x0000ffff, /* src_mask */
779 0x0000ffff, /* dst_mask */
780 false), /* pcrel_offset */
782 /* 64 bit subtraction. Used in the N32 ABI. */
783 HOWTO (R_MIPS_SUB, /* type */
785 4, /* size (0 = byte, 1 = short, 2 = long) */
787 false, /* pc_relative */
789 complain_overflow_bitfield, /* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_MIPS_SUB", /* name */
792 true, /* partial_inplace */
793 MINUS_ONE, /* src_mask */
794 MINUS_ONE, /* dst_mask */
795 false), /* pcrel_offset */
797 /* Used to cause the linker to insert and delete instructions? */
798 EMPTY_HOWTO (R_MIPS_INSERT_A),
799 EMPTY_HOWTO (R_MIPS_INSERT_B),
800 EMPTY_HOWTO (R_MIPS_DELETE),
802 /* Get the higher value of a 64 bit addend. */
803 HOWTO (R_MIPS_HIGHER, /* type */
805 2, /* size (0 = byte, 1 = short, 2 = long) */
807 false, /* pc_relative */
809 complain_overflow_dont, /* complain_on_overflow */
810 bfd_elf_generic_reloc, /* special_function */
811 "R_MIPS_HIGHER", /* name */
812 true, /* partial_inplace */
814 0xffff, /* dst_mask */
815 false), /* pcrel_offset */
817 /* Get the highest value of a 64 bit addend. */
818 HOWTO (R_MIPS_HIGHEST, /* type */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 false, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 bfd_elf_generic_reloc, /* special_function */
826 "R_MIPS_HIGHEST", /* name */
827 true, /* partial_inplace */
829 0xffff, /* dst_mask */
830 false), /* pcrel_offset */
832 /* High 16 bits of displacement in global offset table. */
833 HOWTO (R_MIPS_CALL_HI16, /* type */
835 2, /* size (0 = byte, 1 = short, 2 = long) */
837 false, /* pc_relative */
839 complain_overflow_dont, /* complain_on_overflow */
840 bfd_elf_generic_reloc, /* special_function */
841 "R_MIPS_CALL_HI16", /* name */
842 true, /* partial_inplace */
843 0x0000ffff, /* src_mask */
844 0x0000ffff, /* dst_mask */
845 false), /* pcrel_offset */
847 /* Low 16 bits of displacement in global offset table. */
848 HOWTO (R_MIPS_CALL_LO16, /* type */
850 2, /* size (0 = byte, 1 = short, 2 = long) */
852 false, /* pc_relative */
854 complain_overflow_dont, /* complain_on_overflow */
855 bfd_elf_generic_reloc, /* special_function */
856 "R_MIPS_CALL_LO16", /* name */
857 true, /* partial_inplace */
858 0x0000ffff, /* src_mask */
859 0x0000ffff, /* dst_mask */
860 false), /* pcrel_offset */
862 /* Section displacement. */
863 HOWTO (R_MIPS_SCN_DISP, /* type */
865 2, /* size (0 = byte, 1 = short, 2 = long) */
867 false, /* pc_relative */
869 complain_overflow_dont, /* complain_on_overflow */
870 bfd_elf_generic_reloc, /* special_function */
871 "R_MIPS_SCN_DISP", /* name */
872 false, /* partial_inplace */
873 0xffffffff, /* src_mask */
874 0xffffffff, /* dst_mask */
875 false), /* pcrel_offset */
877 EMPTY_HOWTO (R_MIPS_REL16),
878 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
879 EMPTY_HOWTO (R_MIPS_PJUMP),
880 EMPTY_HOWTO (R_MIPS_RELGOT),
882 /* Protected jump conversion. This is an optimization hint. No
883 relocation is required for correctness. */
884 HOWTO (R_MIPS_JALR, /* type */
886 0, /* size (0 = byte, 1 = short, 2 = long) */
888 false, /* pc_relative */
890 complain_overflow_dont, /* complain_on_overflow */
891 bfd_elf_generic_reloc, /* special_function */
892 "R_MIPS_JALR", /* name */
893 false, /* partial_inplace */
894 0x00000000, /* src_mask */
895 0x00000000, /* dst_mask */
896 false), /* pcrel_offset */
899 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
900 is a hack to make the linker think that we need 64 bit values. */
901 static reloc_howto_type elf_mips_ctor64_howto =
902 HOWTO (R_MIPS_64, /* type */
904 4, /* size (0 = byte, 1 = short, 2 = long) */
906 false, /* pc_relative */
908 complain_overflow_signed, /* complain_on_overflow */
909 mips32_64bit_reloc, /* special_function */
910 "R_MIPS_64", /* name */
911 true, /* partial_inplace */
912 0xffffffff, /* src_mask */
913 0xffffffff, /* dst_mask */
914 false); /* pcrel_offset */
916 /* The reloc used for the mips16 jump instruction. */
917 static reloc_howto_type elf_mips16_jump_howto =
918 HOWTO (R_MIPS16_26, /* type */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
922 false, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 /* This needs complex overflow
926 detection, because the upper four
927 bits must match the PC. */
928 mips16_jump_reloc, /* special_function */
929 "R_MIPS16_26", /* name */
930 true, /* partial_inplace */
931 0x3ffffff, /* src_mask */
932 0x3ffffff, /* dst_mask */
933 false); /* pcrel_offset */
935 /* The reloc used for the mips16 gprel instruction. */
936 static reloc_howto_type elf_mips16_gprel_howto =
937 HOWTO (R_MIPS16_GPREL, /* type */
939 2, /* size (0 = byte, 1 = short, 2 = long) */
941 false, /* pc_relative */
943 complain_overflow_signed, /* complain_on_overflow */
944 mips16_gprel_reloc, /* special_function */
945 "R_MIPS16_GPREL", /* name */
946 true, /* partial_inplace */
947 0x07ff001f, /* src_mask */
948 0x07ff001f, /* dst_mask */
949 false); /* pcrel_offset */
952 /* GNU extension to record C++ vtable hierarchy */
953 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
954 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
956 2, /* size (0 = byte, 1 = short, 2 = long) */
958 false, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 NULL, /* special_function */
962 "R_MIPS_GNU_VTINHERIT", /* name */
963 false, /* partial_inplace */
966 false); /* pcrel_offset */
968 /* GNU extension to record C++ vtable member usage */
969 static reloc_howto_type elf_mips_gnu_vtentry_howto =
970 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 false, /* pc_relative */
976 complain_overflow_dont, /* complain_on_overflow */
977 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
978 "R_MIPS_GNU_VTENTRY", /* name */
979 false, /* partial_inplace */
982 false); /* pcrel_offset */
984 /* Do a R_MIPS_HI16 relocation. This has to be done in combination
985 with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
986 the HI16. Here we just save the information we need; we do the
987 actual relocation when we see the LO16. MIPS ELF requires that the
988 LO16 immediately follow the HI16. As a GNU extension, we permit an
989 arbitrary number of HI16 relocs to be associated with a single LO16
990 reloc. This extension permits gcc to output the HI and LO relocs
995 struct mips_hi16 *next;
1000 /* FIXME: This should not be a static variable. */
1002 static struct mips_hi16 *mips_hi16_list;
1004 bfd_reloc_status_type
1005 _bfd_mips_elf_hi16_reloc (abfd,
1012 bfd *abfd ATTRIBUTE_UNUSED;
1013 arelent *reloc_entry;
1016 asection *input_section;
1018 char **error_message;
1020 bfd_reloc_status_type ret;
1022 struct mips_hi16 *n;
1024 /* If we're relocating, and this an external symbol, we don't want
1025 to change anything. */
1026 if (output_bfd != (bfd *) NULL
1027 && (symbol->flags & BSF_SECTION_SYM) == 0
1028 && reloc_entry->addend == 0)
1030 reloc_entry->address += input_section->output_offset;
1031 return bfd_reloc_ok;
1036 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1038 boolean relocateable;
1041 if (ret == bfd_reloc_undefined)
1044 if (output_bfd != NULL)
1045 relocateable = true;
1048 relocateable = false;
1049 output_bfd = symbol->section->output_section->owner;
1052 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1053 error_message, &gp);
1054 if (ret != bfd_reloc_ok)
1057 relocation = gp - reloc_entry->address;
1061 if (bfd_is_und_section (symbol->section)
1062 && output_bfd == (bfd *) NULL)
1063 ret = bfd_reloc_undefined;
1065 if (bfd_is_com_section (symbol->section))
1068 relocation = symbol->value;
1071 relocation += symbol->section->output_section->vma;
1072 relocation += symbol->section->output_offset;
1073 relocation += reloc_entry->addend;
1075 if (reloc_entry->address > input_section->_cooked_size)
1076 return bfd_reloc_outofrange;
1078 /* Save the information, and let LO16 do the actual relocation. */
1079 n = (struct mips_hi16 *) bfd_malloc (sizeof *n);
1081 return bfd_reloc_outofrange;
1082 n->addr = (bfd_byte *) data + reloc_entry->address;
1083 n->addend = relocation;
1084 n->next = mips_hi16_list;
1087 if (output_bfd != (bfd *) NULL)
1088 reloc_entry->address += input_section->output_offset;
1093 /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
1094 inplace relocation; this function exists in order to do the
1095 R_MIPS_HI16 relocation described above. */
1097 bfd_reloc_status_type
1098 _bfd_mips_elf_lo16_reloc (abfd,
1106 arelent *reloc_entry;
1109 asection *input_section;
1111 char **error_message;
1113 arelent gp_disp_relent;
1115 if (mips_hi16_list != NULL)
1117 struct mips_hi16 *l;
1124 unsigned long vallo;
1125 struct mips_hi16 *next;
1127 /* Do the HI16 relocation. Note that we actually don't need
1128 to know anything about the LO16 itself, except where to
1129 find the low 16 bits of the addend needed by the LO16. */
1130 insn = bfd_get_32 (abfd, l->addr);
1131 vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
1133 val = ((insn & 0xffff) << 16) + vallo;
1136 /* The low order 16 bits are always treated as a signed
1137 value. Therefore, a negative value in the low order bits
1138 requires an adjustment in the high order bits. We need
1139 to make this adjustment in two ways: once for the bits we
1140 took from the data, and once for the bits we are putting
1141 back in to the data. */
1142 if ((vallo & 0x8000) != 0)
1144 if ((val & 0x8000) != 0)
1147 insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
1148 bfd_put_32 (abfd, insn, l->addr);
1150 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1152 gp_disp_relent = *reloc_entry;
1153 reloc_entry = &gp_disp_relent;
1154 reloc_entry->addend = l->addend;
1162 mips_hi16_list = NULL;
1164 else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
1166 bfd_reloc_status_type ret;
1167 bfd_vma gp, relocation;
1169 /* FIXME: Does this case ever occur? */
1171 ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
1172 if (ret != bfd_reloc_ok)
1175 relocation = gp - reloc_entry->address;
1176 relocation += symbol->section->output_section->vma;
1177 relocation += symbol->section->output_offset;
1178 relocation += reloc_entry->addend;
1180 if (reloc_entry->address > input_section->_cooked_size)
1181 return bfd_reloc_outofrange;
1183 gp_disp_relent = *reloc_entry;
1184 reloc_entry = &gp_disp_relent;
1185 reloc_entry->addend = relocation - 4;
1188 /* Now do the LO16 reloc in the usual way. */
1189 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1190 input_section, output_bfd, error_message);
1193 /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
1194 table used for PIC code. If the symbol is an external symbol, the
1195 instruction is modified to contain the offset of the appropriate
1196 entry in the global offset table. If the symbol is a section
1197 symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
1198 addends are combined to form the real addend against the section
1199 symbol; the GOT16 is modified to contain the offset of an entry in
1200 the global offset table, and the LO16 is modified to offset it
1201 appropriately. Thus an offset larger than 16 bits requires a
1202 modified value in the global offset table.
1204 This implementation suffices for the assembler, but the linker does
1205 not yet know how to create global offset tables. */
1207 bfd_reloc_status_type
1208 _bfd_mips_elf_got16_reloc (abfd,
1216 arelent *reloc_entry;
1219 asection *input_section;
1221 char **error_message;
1223 /* If we're relocating, and this an external symbol, we don't want
1224 to change anything. */
1225 if (output_bfd != (bfd *) NULL
1226 && (symbol->flags & BSF_SECTION_SYM) == 0
1227 && reloc_entry->addend == 0)
1229 reloc_entry->address += input_section->output_offset;
1230 return bfd_reloc_ok;
1233 /* If we're relocating, and this is a local symbol, we can handle it
1235 if (output_bfd != (bfd *) NULL
1236 && (symbol->flags & BSF_SECTION_SYM) != 0)
1237 return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
1238 input_section, output_bfd, error_message);
1243 /* Set the GP value for OUTPUT_BFD. Returns false if this is a
1244 dangerous relocation. */
1247 mips_elf_assign_gp (output_bfd, pgp)
1255 /* If we've already figured out what GP will be, just return it. */
1256 *pgp = _bfd_get_gp_value (output_bfd);
1260 count = bfd_get_symcount (output_bfd);
1261 sym = bfd_get_outsymbols (output_bfd);
1263 /* The linker script will have created a symbol named `_gp' with the
1264 appropriate value. */
1265 if (sym == (asymbol **) NULL)
1269 for (i = 0; i < count; i++, sym++)
1271 register CONST char *name;
1273 name = bfd_asymbol_name (*sym);
1274 if (*name == '_' && strcmp (name, "_gp") == 0)
1276 *pgp = bfd_asymbol_value (*sym);
1277 _bfd_set_gp_value (output_bfd, *pgp);
1285 /* Only get the error once. */
1287 _bfd_set_gp_value (output_bfd, *pgp);
1294 /* We have to figure out the gp value, so that we can adjust the
1295 symbol value correctly. We look up the symbol _gp in the output
1296 BFD. If we can't find it, we're stuck. We cache it in the ELF
1297 target data. We don't need to adjust the symbol value for an
1298 external symbol if we are producing relocateable output. */
1300 static bfd_reloc_status_type
1301 mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
1304 boolean relocateable;
1305 char **error_message;
1308 if (bfd_is_und_section (symbol->section)
1312 return bfd_reloc_undefined;
1315 *pgp = _bfd_get_gp_value (output_bfd);
1318 || (symbol->flags & BSF_SECTION_SYM) != 0))
1322 /* Make up a value. */
1323 *pgp = symbol->section->output_section->vma + 0x4000;
1324 _bfd_set_gp_value (output_bfd, *pgp);
1326 else if (!mips_elf_assign_gp (output_bfd, pgp))
1329 (char *) _("GP relative relocation when _gp not defined");
1330 return bfd_reloc_dangerous;
1334 return bfd_reloc_ok;
1337 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1338 become the offset from the gp register. This function also handles
1339 R_MIPS_LITERAL relocations, although those can be handled more
1340 cleverly because the entries in the .lit8 and .lit4 sections can be
1343 static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *,
1344 arelent *, asection *,
1345 boolean, PTR, bfd_vma));
1347 bfd_reloc_status_type
1348 _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
1349 output_bfd, error_message)
1351 arelent *reloc_entry;
1354 asection *input_section;
1356 char **error_message;
1358 boolean relocateable;
1359 bfd_reloc_status_type ret;
1362 /* If we're relocating, and this is an external symbol with no
1363 addend, we don't want to change anything. We will only have an
1364 addend if this is a newly created reloc, not read from an ELF
1366 if (output_bfd != (bfd *) NULL
1367 && (symbol->flags & BSF_SECTION_SYM) == 0
1368 && reloc_entry->addend == 0)
1370 reloc_entry->address += input_section->output_offset;
1371 return bfd_reloc_ok;
1374 if (output_bfd != (bfd *) NULL)
1375 relocateable = true;
1378 relocateable = false;
1379 output_bfd = symbol->section->output_section->owner;
1382 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1384 if (ret != bfd_reloc_ok)
1387 return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
1388 relocateable, data, gp);
1391 static bfd_reloc_status_type
1392 gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1396 arelent *reloc_entry;
1397 asection *input_section;
1398 boolean relocateable;
1406 if (bfd_is_com_section (symbol->section))
1409 relocation = symbol->value;
1411 relocation += symbol->section->output_section->vma;
1412 relocation += symbol->section->output_offset;
1414 if (reloc_entry->address > input_section->_cooked_size)
1415 return bfd_reloc_outofrange;
1417 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1419 /* Set val to the offset into the section or symbol. */
1420 if (reloc_entry->howto->src_mask == 0)
1422 /* This case occurs with the 64-bit MIPS ELF ABI. */
1423 val = reloc_entry->addend;
1427 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
1432 /* Adjust val for the final section location and GP value. If we
1433 are producing relocateable output, we don't want to do this for
1434 an external symbol. */
1436 || (symbol->flags & BSF_SECTION_SYM) != 0)
1437 val += relocation - gp;
1439 insn = (insn &~ 0xffff) | (val & 0xffff);
1440 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
1443 reloc_entry->address += input_section->output_offset;
1445 /* Make sure it fit in 16 bits. */
1446 if (val >= 0x8000 && val < 0xffff8000)
1447 return bfd_reloc_overflow;
1449 return bfd_reloc_ok;
1452 /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
1453 from the gp register? XXX */
1455 static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
1456 arelent *, asection *,
1457 boolean, PTR, bfd_vma));
1459 bfd_reloc_status_type
1460 _bfd_mips_elf_gprel32_reloc (abfd,
1468 arelent *reloc_entry;
1471 asection *input_section;
1473 char **error_message;
1475 boolean relocateable;
1476 bfd_reloc_status_type ret;
1479 /* If we're relocating, and this is an external symbol with no
1480 addend, we don't want to change anything. We will only have an
1481 addend if this is a newly created reloc, not read from an ELF
1483 if (output_bfd != (bfd *) NULL
1484 && (symbol->flags & BSF_SECTION_SYM) == 0
1485 && reloc_entry->addend == 0)
1487 *error_message = (char *)
1488 _("32bits gp relative relocation occurs for an external symbol");
1489 return bfd_reloc_outofrange;
1492 if (output_bfd != (bfd *) NULL)
1494 relocateable = true;
1495 gp = _bfd_get_gp_value (output_bfd);
1499 relocateable = false;
1500 output_bfd = symbol->section->output_section->owner;
1502 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1503 error_message, &gp);
1504 if (ret != bfd_reloc_ok)
1508 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1509 relocateable, data, gp);
1512 static bfd_reloc_status_type
1513 gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1517 arelent *reloc_entry;
1518 asection *input_section;
1519 boolean relocateable;
1526 if (bfd_is_com_section (symbol->section))
1529 relocation = symbol->value;
1531 relocation += symbol->section->output_section->vma;
1532 relocation += symbol->section->output_offset;
1534 if (reloc_entry->address > input_section->_cooked_size)
1535 return bfd_reloc_outofrange;
1537 if (reloc_entry->howto->src_mask == 0)
1539 /* This case arises with the 64-bit MIPS ELF ABI. */
1543 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1545 /* Set val to the offset into the section or symbol. */
1546 val += reloc_entry->addend;
1548 /* Adjust val for the final section location and GP value. If we
1549 are producing relocateable output, we don't want to do this for
1550 an external symbol. */
1552 || (symbol->flags & BSF_SECTION_SYM) != 0)
1553 val += relocation - gp;
1555 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1558 reloc_entry->address += input_section->output_offset;
1560 return bfd_reloc_ok;
1563 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1564 generated when addreses are 64 bits. The upper 32 bits are a simle
1567 static bfd_reloc_status_type
1568 mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
1569 output_bfd, error_message)
1571 arelent *reloc_entry;
1574 asection *input_section;
1576 char **error_message;
1578 bfd_reloc_status_type r;
1583 r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1584 input_section, output_bfd, error_message);
1585 if (r != bfd_reloc_continue)
1588 /* Do a normal 32 bit relocation on the lower 32 bits. */
1589 reloc32 = *reloc_entry;
1590 if (bfd_big_endian (abfd))
1591 reloc32.address += 4;
1592 reloc32.howto = &elf_mips_howto_table[R_MIPS_32];
1593 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1594 output_bfd, error_message);
1596 /* Sign extend into the upper 32 bits. */
1597 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1598 if ((val & 0x80000000) != 0)
1602 addr = reloc_entry->address;
1603 if (bfd_little_endian (abfd))
1605 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
1610 /* Handle a mips16 jump. */
1612 static bfd_reloc_status_type
1613 mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
1614 output_bfd, error_message)
1615 bfd *abfd ATTRIBUTE_UNUSED;
1616 arelent *reloc_entry;
1618 PTR data ATTRIBUTE_UNUSED;
1619 asection *input_section;
1621 char **error_message ATTRIBUTE_UNUSED;
1623 if (output_bfd != (bfd *) NULL
1624 && (symbol->flags & BSF_SECTION_SYM) == 0
1625 && reloc_entry->addend == 0)
1627 reloc_entry->address += input_section->output_offset;
1628 return bfd_reloc_ok;
1633 static boolean warned;
1636 (*_bfd_error_handler)
1637 (_("Linking mips16 objects into %s format is not supported"),
1638 bfd_get_target (input_section->output_section->owner));
1642 return bfd_reloc_undefined;
1645 /* Handle a mips16 GP relative reloc. */
1647 static bfd_reloc_status_type
1648 mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
1649 output_bfd, error_message)
1651 arelent *reloc_entry;
1654 asection *input_section;
1656 char **error_message;
1658 boolean relocateable;
1659 bfd_reloc_status_type ret;
1661 unsigned short extend, insn;
1662 unsigned long final;
1664 /* If we're relocating, and this is an external symbol with no
1665 addend, we don't want to change anything. We will only have an
1666 addend if this is a newly created reloc, not read from an ELF
1668 if (output_bfd != NULL
1669 && (symbol->flags & BSF_SECTION_SYM) == 0
1670 && reloc_entry->addend == 0)
1672 reloc_entry->address += input_section->output_offset;
1673 return bfd_reloc_ok;
1676 if (output_bfd != NULL)
1677 relocateable = true;
1680 relocateable = false;
1681 output_bfd = symbol->section->output_section->owner;
1684 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1686 if (ret != bfd_reloc_ok)
1689 if (reloc_entry->address > input_section->_cooked_size)
1690 return bfd_reloc_outofrange;
1692 /* Pick up the mips16 extend instruction and the real instruction. */
1693 extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
1694 insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
1696 /* Stuff the current addend back as a 32 bit value, do the usual
1697 relocation, and then clean up. */
1699 (((extend & 0x1f) << 11)
1702 (bfd_byte *) data + reloc_entry->address);
1704 ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
1705 relocateable, data, gp);
1707 final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1710 | ((final >> 11) & 0x1f)
1712 (bfd_byte *) data + reloc_entry->address);
1716 (bfd_byte *) data + reloc_entry->address + 2);
1721 /* Return the ISA for a MIPS e_flags value. */
1724 elf_mips_isa (flags)
1727 switch (flags & EF_MIPS_ARCH)
1741 /* Return the MACH for a MIPS e_flags value. */
1744 elf_mips_mach (flags)
1747 switch (flags & EF_MIPS_MACH)
1749 case E_MIPS_MACH_3900:
1750 return bfd_mach_mips3900;
1752 case E_MIPS_MACH_4010:
1753 return bfd_mach_mips4010;
1755 case E_MIPS_MACH_4100:
1756 return bfd_mach_mips4100;
1758 case E_MIPS_MACH_4111:
1759 return bfd_mach_mips4111;
1761 case E_MIPS_MACH_4650:
1762 return bfd_mach_mips4650;
1765 switch (flags & EF_MIPS_ARCH)
1769 return bfd_mach_mips3000;
1773 return bfd_mach_mips6000;
1777 return bfd_mach_mips4000;
1781 return bfd_mach_mips8000;
1789 /* Return printable name for ABI. */
1792 elf_mips_abi_name (abfd)
1797 if (ABI_N32_P (abfd))
1799 else if (ABI_64_P (abfd))
1802 flags = elf_elfheader (abfd)->e_flags;
1803 switch (flags & EF_MIPS_ABI)
1807 case E_MIPS_ABI_O32:
1809 case E_MIPS_ABI_O64:
1811 case E_MIPS_ABI_EABI32:
1813 case E_MIPS_ABI_EABI64:
1816 return "unknown abi";
1820 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1822 struct elf_reloc_map {
1823 bfd_reloc_code_real_type bfd_reloc_val;
1824 enum elf_mips_reloc_type elf_reloc_val;
1827 static CONST struct elf_reloc_map mips_reloc_map[] =
1829 { BFD_RELOC_NONE, R_MIPS_NONE, },
1830 { BFD_RELOC_16, R_MIPS_16 },
1831 { BFD_RELOC_32, R_MIPS_32 },
1832 { BFD_RELOC_64, R_MIPS_64 },
1833 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1834 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1835 { BFD_RELOC_LO16, R_MIPS_LO16 },
1836 { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 },
1837 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1838 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1839 { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
1840 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1841 { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 },
1842 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1843 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1844 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1845 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1846 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1847 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1848 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1849 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
1852 /* Given a BFD reloc type, return a howto structure. */
1854 static reloc_howto_type *
1855 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
1857 bfd_reloc_code_real_type code;
1861 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
1863 if (mips_reloc_map[i].bfd_reloc_val == code)
1864 return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val];
1870 bfd_set_error (bfd_error_bad_value);
1873 case BFD_RELOC_CTOR:
1874 /* We need to handle BFD_RELOC_CTOR specially.
1875 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1876 size of addresses on this architecture. */
1877 if (bfd_arch_bits_per_address (abfd) == 32)
1878 return &elf_mips_howto_table[(int) R_MIPS_32];
1880 return &elf_mips_ctor64_howto;
1882 case BFD_RELOC_MIPS16_JMP:
1883 return &elf_mips16_jump_howto;
1884 case BFD_RELOC_MIPS16_GPREL:
1885 return &elf_mips16_gprel_howto;
1886 case BFD_RELOC_VTABLE_INHERIT:
1887 return &elf_mips_gnu_vtinherit_howto;
1888 case BFD_RELOC_VTABLE_ENTRY:
1889 return &elf_mips_gnu_vtentry_howto;
1893 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
1895 static reloc_howto_type *
1896 mips_rtype_to_howto (r_type)
1897 unsigned int r_type;
1902 return &elf_mips16_jump_howto;
1904 case R_MIPS16_GPREL:
1905 return &elf_mips16_gprel_howto;
1907 case R_MIPS_GNU_VTINHERIT:
1908 return &elf_mips_gnu_vtinherit_howto;
1910 case R_MIPS_GNU_VTENTRY:
1911 return &elf_mips_gnu_vtentry_howto;
1915 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1916 return &elf_mips_howto_table[r_type];
1921 /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
1924 mips_info_to_howto_rel (abfd, cache_ptr, dst)
1927 Elf32_Internal_Rel *dst;
1929 unsigned int r_type;
1931 r_type = ELF32_R_TYPE (dst->r_info);
1932 cache_ptr->howto = mips_rtype_to_howto (r_type);
1934 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1935 value for the object file. We get the addend now, rather than
1936 when we do the relocation, because the symbol manipulations done
1937 by the linker may cause us to lose track of the input BFD. */
1938 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1939 && (r_type == (unsigned int) R_MIPS_GPREL16
1940 || r_type == (unsigned int) R_MIPS_LITERAL))
1941 cache_ptr->addend = elf_gp (abfd);
1944 /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */
1947 mips_info_to_howto_rela (abfd, cache_ptr, dst)
1950 Elf32_Internal_Rela *dst;
1952 /* Since an Elf32_Internal_Rel is an initial prefix of an
1953 Elf32_Internal_Rela, we can just use mips_info_to_howto_rel
1955 mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst);
1957 /* If we ever need to do any extra processing with dst->r_addend
1958 (the field omitted in an Elf32_Internal_Rel) we can do it here. */
1961 /* A .reginfo section holds a single Elf32_RegInfo structure. These
1962 routines swap this structure in and out. They are used outside of
1963 BFD, so they are globally visible. */
1966 bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
1968 const Elf32_External_RegInfo *ex;
1971 in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask);
1972 in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]);
1973 in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]);
1974 in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]);
1975 in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]);
1976 in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value);
1980 bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
1982 const Elf32_RegInfo *in;
1983 Elf32_External_RegInfo *ex;
1985 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask,
1986 (bfd_byte *) ex->ri_gprmask);
1987 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0],
1988 (bfd_byte *) ex->ri_cprmask[0]);
1989 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1],
1990 (bfd_byte *) ex->ri_cprmask[1]);
1991 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2],
1992 (bfd_byte *) ex->ri_cprmask[2]);
1993 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3],
1994 (bfd_byte *) ex->ri_cprmask[3]);
1995 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value,
1996 (bfd_byte *) ex->ri_gp_value);
1999 /* In the 64 bit ABI, the .MIPS.options section holds register
2000 information in an Elf64_Reginfo structure. These routines swap
2001 them in and out. They are globally visible because they are used
2002 outside of BFD. These routines are here so that gas can call them
2003 without worrying about whether the 64 bit ABI has been included. */
2006 bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
2008 const Elf64_External_RegInfo *ex;
2009 Elf64_Internal_RegInfo *in;
2011 in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask);
2012 in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad);
2013 in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]);
2014 in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]);
2015 in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]);
2016 in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]);
2017 in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value);
2021 bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
2023 const Elf64_Internal_RegInfo *in;
2024 Elf64_External_RegInfo *ex;
2026 bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask,
2027 (bfd_byte *) ex->ri_gprmask);
2028 bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad,
2029 (bfd_byte *) ex->ri_pad);
2030 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0],
2031 (bfd_byte *) ex->ri_cprmask[0]);
2032 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1],
2033 (bfd_byte *) ex->ri_cprmask[1]);
2034 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2],
2035 (bfd_byte *) ex->ri_cprmask[2]);
2036 bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3],
2037 (bfd_byte *) ex->ri_cprmask[3]);
2038 bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value,
2039 (bfd_byte *) ex->ri_gp_value);
2042 /* Swap an entry in a .gptab section. Note that these routines rely
2043 on the equivalence of the two elements of the union. */
2046 bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
2048 const Elf32_External_gptab *ex;
2051 in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value);
2052 in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes);
2056 bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
2058 const Elf32_gptab *in;
2059 Elf32_External_gptab *ex;
2061 bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value,
2062 ex->gt_entry.gt_g_value);
2063 bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes,
2064 ex->gt_entry.gt_bytes);
2068 bfd_elf32_swap_compact_rel_out (abfd, in, ex)
2070 const Elf32_compact_rel *in;
2071 Elf32_External_compact_rel *ex;
2073 bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1);
2074 bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num);
2075 bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2);
2076 bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset);
2077 bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0);
2078 bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1);
2082 bfd_elf32_swap_crinfo_out (abfd, in, ex)
2084 const Elf32_crinfo *in;
2085 Elf32_External_crinfo *ex;
2089 l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
2090 | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
2091 | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
2092 | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
2093 bfd_h_put_32 (abfd, (bfd_vma) l, ex->info);
2094 bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst);
2095 bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr);
2098 /* Swap in an options header. */
2101 bfd_mips_elf_swap_options_in (abfd, ex, in)
2103 const Elf_External_Options *ex;
2104 Elf_Internal_Options *in;
2106 in->kind = bfd_h_get_8 (abfd, ex->kind);
2107 in->size = bfd_h_get_8 (abfd, ex->size);
2108 in->section = bfd_h_get_16 (abfd, ex->section);
2109 in->info = bfd_h_get_32 (abfd, ex->info);
2112 /* Swap out an options header. */
2115 bfd_mips_elf_swap_options_out (abfd, in, ex)
2117 const Elf_Internal_Options *in;
2118 Elf_External_Options *ex;
2120 bfd_h_put_8 (abfd, in->kind, ex->kind);
2121 bfd_h_put_8 (abfd, in->size, ex->size);
2122 bfd_h_put_16 (abfd, in->section, ex->section);
2123 bfd_h_put_32 (abfd, in->info, ex->info);
2126 /* Swap in an MSYM entry. */
2129 bfd_mips_elf_swap_msym_in (abfd, ex, in)
2131 const Elf32_External_Msym *ex;
2132 Elf32_Internal_Msym *in;
2134 in->ms_hash_value = bfd_h_get_32 (abfd, ex->ms_hash_value);
2135 in->ms_info = bfd_h_get_32 (abfd, ex->ms_info);
2138 /* Swap out an MSYM entry. */
2141 bfd_mips_elf_swap_msym_out (abfd, in, ex)
2143 const Elf32_Internal_Msym *in;
2144 Elf32_External_Msym *ex;
2146 bfd_h_put_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
2147 bfd_h_put_32 (abfd, in->ms_info, ex->ms_info);
2151 /* Determine whether a symbol is global for the purposes of splitting
2152 the symbol table into global symbols and local symbols. At least
2153 on Irix 5, this split must be between section symbols and all other
2154 symbols. On most ELF targets the split is between static symbols
2155 and externally visible symbols. */
2159 mips_elf_sym_is_global (abfd, sym)
2160 bfd *abfd ATTRIBUTE_UNUSED;
2163 return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false;
2166 /* Set the right machine number for a MIPS ELF file. This is used for
2167 both the 32-bit and the 64-bit ABI. */
2170 _bfd_mips_elf_object_p (abfd)
2173 /* Irix 5 and 6 is broken. Object file symbol tables are not always
2174 sorted correctly such that local symbols precede global symbols,
2175 and the sh_info field in the symbol table is not always right. */
2176 elf_bad_symtab (abfd) = true;
2178 bfd_default_set_arch_mach (abfd, bfd_arch_mips,
2179 elf_mips_mach (elf_elfheader (abfd)->e_flags));
2183 /* The final processing done just before writing out a MIPS ELF object
2184 file. This gets the MIPS architecture right based on the machine
2185 number. This is used by both the 32-bit and the 64-bit ABI. */
2189 _bfd_mips_elf_final_write_processing (abfd, linker)
2191 boolean linker ATTRIBUTE_UNUSED;
2195 Elf_Internal_Shdr **hdrpp;
2199 switch (bfd_get_mach (abfd))
2202 case bfd_mach_mips3000:
2203 val = E_MIPS_ARCH_1;
2206 case bfd_mach_mips3900:
2207 val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
2210 case bfd_mach_mips6000:
2211 val = E_MIPS_ARCH_2;
2214 case bfd_mach_mips4000:
2215 case bfd_mach_mips4300:
2216 val = E_MIPS_ARCH_3;
2219 case bfd_mach_mips4010:
2220 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
2223 case bfd_mach_mips4100:
2224 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
2227 case bfd_mach_mips4111:
2228 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
2231 case bfd_mach_mips4650:
2232 val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
2235 case bfd_mach_mips8000:
2236 val = E_MIPS_ARCH_4;
2240 elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2241 elf_elfheader (abfd)->e_flags |= val;
2243 /* Set the sh_info field for .gptab sections and other appropriate
2244 info for each special section. */
2245 for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
2246 i < elf_elfheader (abfd)->e_shnum;
2249 switch ((*hdrpp)->sh_type)
2252 case SHT_MIPS_LIBLIST:
2253 sec = bfd_get_section_by_name (abfd, ".dynstr");
2255 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2258 case SHT_MIPS_GPTAB:
2259 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2260 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2261 BFD_ASSERT (name != NULL
2262 && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
2263 sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
2264 BFD_ASSERT (sec != NULL);
2265 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
2268 case SHT_MIPS_CONTENT:
2269 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2270 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2271 BFD_ASSERT (name != NULL
2272 && strncmp (name, ".MIPS.content",
2273 sizeof ".MIPS.content" - 1) == 0);
2274 sec = bfd_get_section_by_name (abfd,
2275 name + sizeof ".MIPS.content" - 1);
2276 BFD_ASSERT (sec != NULL);
2277 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2280 case SHT_MIPS_SYMBOL_LIB:
2281 sec = bfd_get_section_by_name (abfd, ".dynsym");
2283 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2284 sec = bfd_get_section_by_name (abfd, ".liblist");
2286 (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
2289 case SHT_MIPS_EVENTS:
2290 BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
2291 name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
2292 BFD_ASSERT (name != NULL);
2293 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
2294 sec = bfd_get_section_by_name (abfd,
2295 name + sizeof ".MIPS.events" - 1);
2298 BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
2299 sizeof ".MIPS.post_rel" - 1) == 0);
2300 sec = bfd_get_section_by_name (abfd,
2302 + sizeof ".MIPS.post_rel" - 1));
2304 BFD_ASSERT (sec != NULL);
2305 (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
2312 /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
2315 _bfd_mips_elf_set_private_flags (abfd, flags)
2319 BFD_ASSERT (!elf_flags_init (abfd)
2320 || elf_elfheader (abfd)->e_flags == flags);
2322 elf_elfheader (abfd)->e_flags = flags;
2323 elf_flags_init (abfd) = true;
2327 /* Copy backend specific data from one object module to another */
2330 _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd)
2334 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2335 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2338 BFD_ASSERT (!elf_flags_init (obfd)
2339 || (elf_elfheader (obfd)->e_flags
2340 == elf_elfheader (ibfd)->e_flags));
2342 elf_gp (obfd) = elf_gp (ibfd);
2343 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
2344 elf_flags_init (obfd) = true;
2348 /* Merge backend specific data from an object file to the output
2349 object file when linking. */
2352 _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
2360 /* Check if we have the same endianess */
2361 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2362 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2366 if (bfd_big_endian (ibfd))
2367 msg = _("%s: compiled for a big endian system and target is little endian");
2369 msg = _("%s: compiled for a little endian system and target is big endian");
2371 (*_bfd_error_handler) (msg, bfd_get_filename (ibfd));
2373 bfd_set_error (bfd_error_wrong_format);
2377 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2378 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2381 new_flags = elf_elfheader (ibfd)->e_flags;
2382 elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
2383 old_flags = elf_elfheader (obfd)->e_flags;
2385 if (! elf_flags_init (obfd))
2387 elf_flags_init (obfd) = true;
2388 elf_elfheader (obfd)->e_flags = new_flags;
2389 elf_elfheader (obfd)->e_ident[EI_CLASS]
2390 = elf_elfheader (ibfd)->e_ident[EI_CLASS];
2392 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
2393 && bfd_get_arch_info (obfd)->the_default)
2395 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
2396 bfd_get_mach (ibfd)))
2403 /* Check flag compatibility. */
2405 new_flags &= ~EF_MIPS_NOREORDER;
2406 old_flags &= ~EF_MIPS_NOREORDER;
2408 if (new_flags == old_flags)
2413 if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
2415 new_flags &= ~EF_MIPS_PIC;
2416 old_flags &= ~EF_MIPS_PIC;
2417 (*_bfd_error_handler)
2418 (_("%s: linking PIC files with non-PIC files"),
2419 bfd_get_filename (ibfd));
2423 if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
2425 new_flags &= ~EF_MIPS_CPIC;
2426 old_flags &= ~EF_MIPS_CPIC;
2427 (*_bfd_error_handler)
2428 (_("%s: linking abicalls files with non-abicalls files"),
2429 bfd_get_filename (ibfd));
2433 /* Compare the ISA's. */
2434 if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
2435 != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
2437 int new_mach = new_flags & EF_MIPS_MACH;
2438 int old_mach = old_flags & EF_MIPS_MACH;
2439 int new_isa = elf_mips_isa (new_flags);
2440 int old_isa = elf_mips_isa (old_flags);
2442 /* If either has no machine specified, just compare the general isa's.
2443 Some combinations of machines are ok, if the isa's match. */
2446 || new_mach == old_mach
2449 /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3
2450 and -mips4 code. They will normally use the same data sizes and
2451 calling conventions. */
2453 if ((new_isa == 1 || new_isa == 2)
2454 ? (old_isa != 1 && old_isa != 2)
2455 : (old_isa == 1 || old_isa == 2))
2457 (*_bfd_error_handler)
2458 (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
2459 bfd_get_filename (ibfd), new_isa, old_isa);
2466 (*_bfd_error_handler)
2467 (_("%s: ISA mismatch (%d) with previous modules (%d)"),
2468 bfd_get_filename (ibfd),
2469 elf_mips_mach (new_flags),
2470 elf_mips_mach (old_flags));
2474 new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2475 old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
2478 /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
2479 does set EI_CLASS differently from any 32-bit ABI. */
2480 if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
2481 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
2482 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
2484 /* Only error if both are set (to different values). */
2485 if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
2486 || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
2487 != elf_elfheader (obfd)->e_ident[EI_CLASS]))
2489 (*_bfd_error_handler)
2490 (_("%s: ABI mismatch: linking %s module with previous %s modules"),
2491 bfd_get_filename (ibfd),
2492 elf_mips_abi_name (ibfd),
2493 elf_mips_abi_name (obfd));
2496 new_flags &= ~EF_MIPS_ABI;
2497 old_flags &= ~EF_MIPS_ABI;
2500 /* Warn about any other mismatches */
2501 if (new_flags != old_flags)
2503 (*_bfd_error_handler)
2504 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
2505 bfd_get_filename (ibfd), (unsigned long) new_flags,
2506 (unsigned long) old_flags);
2512 bfd_set_error (bfd_error_bad_value);
2520 _bfd_mips_elf_print_private_bfd_data (abfd, ptr)
2524 FILE *file = (FILE *) ptr;
2526 BFD_ASSERT (abfd != NULL && ptr != NULL);
2528 /* Print normal ELF private data. */
2529 _bfd_elf_print_private_bfd_data (abfd, ptr);
2531 /* xgettext:c-format */
2532 fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
2534 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
2535 fprintf (file, _ (" [abi=O32]"));
2536 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
2537 fprintf (file, _ (" [abi=O64]"));
2538 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
2539 fprintf (file, _ (" [abi=EABI32]"));
2540 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
2541 fprintf (file, _ (" [abi=EABI64]"));
2542 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
2543 fprintf (file, _ (" [abi unknown]"));
2544 else if (ABI_N32_P (abfd))
2545 fprintf (file, _ (" [abi=N32]"));
2546 else if (ABI_64_P (abfd))
2547 fprintf (file, _ (" [abi=64]"));
2549 fprintf (file, _ (" [no abi set]"));
2551 if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
2552 fprintf (file, _ (" [mips1]"));
2553 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
2554 fprintf (file, _ (" [mips2]"));
2555 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
2556 fprintf (file, _ (" [mips3]"));
2557 else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
2558 fprintf (file, _ (" [mips4]"));
2560 fprintf (file, _ (" [unknown ISA]"));
2562 if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
2563 fprintf (file, _ (" [32bitmode]"));
2565 fprintf (file, _ (" [not 32bitmode]"));
2572 /* Handle a MIPS specific section when reading an object file. This
2573 is called when elfcode.h finds a section with an unknown type.
2574 This routine supports both the 32-bit and 64-bit ELF ABI.
2576 FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
2580 _bfd_mips_elf_section_from_shdr (abfd, hdr, name)
2582 Elf_Internal_Shdr *hdr;
2587 /* There ought to be a place to keep ELF backend specific flags, but
2588 at the moment there isn't one. We just keep track of the
2589 sections by their name, instead. Fortunately, the ABI gives
2590 suggested names for all the MIPS specific sections, so we will
2591 probably get away with this. */
2592 switch (hdr->sh_type)
2594 case SHT_MIPS_LIBLIST:
2595 if (strcmp (name, ".liblist") != 0)
2599 if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
2602 case SHT_MIPS_CONFLICT:
2603 if (strcmp (name, ".conflict") != 0)
2606 case SHT_MIPS_GPTAB:
2607 if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
2610 case SHT_MIPS_UCODE:
2611 if (strcmp (name, ".ucode") != 0)
2614 case SHT_MIPS_DEBUG:
2615 if (strcmp (name, ".mdebug") != 0)
2617 flags = SEC_DEBUGGING;
2619 case SHT_MIPS_REGINFO:
2620 if (strcmp (name, ".reginfo") != 0
2621 || hdr->sh_size != sizeof (Elf32_External_RegInfo))
2623 flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
2625 case SHT_MIPS_IFACE:
2626 if (strcmp (name, ".MIPS.interfaces") != 0)
2629 case SHT_MIPS_CONTENT:
2630 if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
2633 case SHT_MIPS_OPTIONS:
2634 if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
2637 case SHT_MIPS_DWARF:
2638 if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
2641 case SHT_MIPS_SYMBOL_LIB:
2642 if (strcmp (name, ".MIPS.symlib") != 0)
2645 case SHT_MIPS_EVENTS:
2646 if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
2647 && strncmp (name, ".MIPS.post_rel",
2648 sizeof ".MIPS.post_rel" - 1) != 0)
2655 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2660 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2661 (bfd_get_section_flags (abfd,
2667 /* FIXME: We should record sh_info for a .gptab section. */
2669 /* For a .reginfo section, set the gp value in the tdata information
2670 from the contents of this section. We need the gp value while
2671 processing relocs, so we just get it now. The .reginfo section
2672 is not used in the 64-bit MIPS ELF ABI. */
2673 if (hdr->sh_type == SHT_MIPS_REGINFO)
2675 Elf32_External_RegInfo ext;
2678 if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
2679 (file_ptr) 0, sizeof ext))
2681 bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
2682 elf_gp (abfd) = s.ri_gp_value;
2685 /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
2686 set the gp value based on what we find. We may see both
2687 SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
2688 they should agree. */
2689 if (hdr->sh_type == SHT_MIPS_OPTIONS)
2691 bfd_byte *contents, *l, *lend;
2693 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
2694 if (contents == NULL)
2696 if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
2697 (file_ptr) 0, hdr->sh_size))
2703 lend = contents + hdr->sh_size;
2704 while (l + sizeof (Elf_External_Options) <= lend)
2706 Elf_Internal_Options intopt;
2708 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
2710 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
2712 Elf64_Internal_RegInfo intreg;
2714 bfd_mips_elf64_swap_reginfo_in
2716 ((Elf64_External_RegInfo *)
2717 (l + sizeof (Elf_External_Options))),
2719 elf_gp (abfd) = intreg.ri_gp_value;
2721 else if (intopt.kind == ODK_REGINFO)
2723 Elf32_RegInfo intreg;
2725 bfd_mips_elf32_swap_reginfo_in
2727 ((Elf32_External_RegInfo *)
2728 (l + sizeof (Elf_External_Options))),
2730 elf_gp (abfd) = intreg.ri_gp_value;
2740 /* Set the correct type for a MIPS ELF section. We do this by the
2741 section name, which is a hack, but ought to work. This routine is
2742 used by both the 32-bit and the 64-bit ABI. */
2745 _bfd_mips_elf_fake_sections (abfd, hdr, sec)
2747 Elf32_Internal_Shdr *hdr;
2750 register const char *name;
2752 name = bfd_get_section_name (abfd, sec);
2754 if (strcmp (name, ".liblist") == 0)
2756 hdr->sh_type = SHT_MIPS_LIBLIST;
2757 hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
2758 /* The sh_link field is set in final_write_processing. */
2760 else if (strcmp (name, ".conflict") == 0)
2761 hdr->sh_type = SHT_MIPS_CONFLICT;
2762 else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
2764 hdr->sh_type = SHT_MIPS_GPTAB;
2765 hdr->sh_entsize = sizeof (Elf32_External_gptab);
2766 /* The sh_info field is set in final_write_processing. */
2768 else if (strcmp (name, ".ucode") == 0)
2769 hdr->sh_type = SHT_MIPS_UCODE;
2770 else if (strcmp (name, ".mdebug") == 0)
2772 hdr->sh_type = SHT_MIPS_DEBUG;
2773 /* In a shared object on Irix 5.3, the .mdebug section has an
2774 entsize of 0. FIXME: Does this matter? */
2775 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
2776 hdr->sh_entsize = 0;
2778 hdr->sh_entsize = 1;
2780 else if (strcmp (name, ".reginfo") == 0)
2782 hdr->sh_type = SHT_MIPS_REGINFO;
2783 /* In a shared object on Irix 5.3, the .reginfo section has an
2784 entsize of 0x18. FIXME: Does this matter? */
2785 if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
2786 hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
2788 hdr->sh_entsize = 1;
2790 else if (SGI_COMPAT (abfd)
2791 && (strcmp (name, ".hash") == 0
2792 || strcmp (name, ".dynamic") == 0
2793 || strcmp (name, ".dynstr") == 0))
2795 hdr->sh_entsize = 0;
2797 /* This isn't how the Irix 6 linker behaves. */
2798 hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
2801 else if (strcmp (name, ".got") == 0
2802 || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
2803 || strcmp (name, ".sdata") == 0
2804 || strcmp (name, ".sbss") == 0
2805 || strcmp (name, ".lit4") == 0
2806 || strcmp (name, ".lit8") == 0)
2807 hdr->sh_flags |= SHF_MIPS_GPREL;
2808 else if (strcmp (name, ".MIPS.interfaces") == 0)
2810 hdr->sh_type = SHT_MIPS_IFACE;
2811 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2813 else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
2815 hdr->sh_type = SHT_MIPS_CONTENT;
2816 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2817 /* The sh_info field is set in final_write_processing. */
2819 else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
2821 hdr->sh_type = SHT_MIPS_OPTIONS;
2822 hdr->sh_entsize = 1;
2823 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2825 else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
2826 hdr->sh_type = SHT_MIPS_DWARF;
2827 else if (strcmp (name, ".MIPS.symlib") == 0)
2829 hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
2830 /* The sh_link and sh_info fields are set in
2831 final_write_processing. */
2833 else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
2834 || strncmp (name, ".MIPS.post_rel",
2835 sizeof ".MIPS.post_rel" - 1) == 0)
2837 hdr->sh_type = SHT_MIPS_EVENTS;
2838 hdr->sh_flags |= SHF_MIPS_NOSTRIP;
2839 /* The sh_link field is set in final_write_processing. */
2841 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
2843 hdr->sh_type = SHT_MIPS_MSYM;
2844 hdr->sh_flags |= SHF_ALLOC;
2845 hdr->sh_entsize = 8;
2848 /* The generic elf_fake_sections will set up REL_HDR using the
2849 default kind of relocations. But, we may actually need both
2850 kinds of relocations, so we set up the second header here. */
2851 if ((sec->flags & SEC_RELOC) != 0)
2853 struct bfd_elf_section_data *esd;
2855 esd = elf_section_data (sec);
2856 BFD_ASSERT (esd->rel_hdr2 == NULL);
2858 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr));
2861 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
2862 !elf_section_data (sec)->use_rela_p);
2868 /* Given a BFD section, try to locate the corresponding ELF section
2869 index. This is used by both the 32-bit and the 64-bit ABI.
2870 Actually, it's not clear to me that the 64-bit ABI supports these,
2871 but for non-PIC objects we will certainly want support for at least
2872 the .scommon section. */
2875 _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
2876 bfd *abfd ATTRIBUTE_UNUSED;
2877 Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED;
2881 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2883 *retval = SHN_MIPS_SCOMMON;
2886 if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
2888 *retval = SHN_MIPS_ACOMMON;
2894 /* When are writing out the .options or .MIPS.options section,
2895 remember the bytes we are writing out, so that we can install the
2896 GP value in the section_processing routine. */
2899 _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
2904 bfd_size_type count;
2906 if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
2910 if (elf_section_data (section) == NULL)
2912 section->used_by_bfd =
2913 (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
2914 if (elf_section_data (section) == NULL)
2917 c = (bfd_byte *) elf_section_data (section)->tdata;
2922 if (section->_cooked_size != 0)
2923 size = section->_cooked_size;
2925 size = section->_raw_size;
2926 c = (bfd_byte *) bfd_zalloc (abfd, size);
2929 elf_section_data (section)->tdata = (PTR) c;
2932 memcpy (c + offset, location, count);
2935 return _bfd_elf_set_section_contents (abfd, section, location, offset,
2939 /* Work over a section just before writing it out. This routine is
2940 used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
2941 sections that need the SHF_MIPS_GPREL flag by name; there has to be
2945 _bfd_mips_elf_section_processing (abfd, hdr)
2947 Elf_Internal_Shdr *hdr;
2949 if (hdr->sh_type == SHT_MIPS_REGINFO
2950 && hdr->sh_size > 0)
2954 BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
2955 BFD_ASSERT (hdr->contents == NULL);
2958 hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
2961 bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf);
2962 if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4)
2966 if (hdr->sh_type == SHT_MIPS_OPTIONS
2967 && hdr->bfd_section != NULL
2968 && elf_section_data (hdr->bfd_section) != NULL
2969 && elf_section_data (hdr->bfd_section)->tdata != NULL)
2971 bfd_byte *contents, *l, *lend;
2973 /* We stored the section contents in the elf_section_data tdata
2974 field in the set_section_contents routine. We save the
2975 section contents so that we don't have to read them again.
2976 At this point we know that elf_gp is set, so we can look
2977 through the section contents to see if there is an
2978 ODK_REGINFO structure. */
2980 contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
2982 lend = contents + hdr->sh_size;
2983 while (l + sizeof (Elf_External_Options) <= lend)
2985 Elf_Internal_Options intopt;
2987 bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
2989 if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
2996 + sizeof (Elf_External_Options)
2997 + (sizeof (Elf64_External_RegInfo) - 8)),
3000 bfd_h_put_64 (abfd, elf_gp (abfd), buf);
3001 if (bfd_write (buf, 1, 8, abfd) != 8)
3004 else if (intopt.kind == ODK_REGINFO)
3011 + sizeof (Elf_External_Options)
3012 + (sizeof (Elf32_External_RegInfo) - 4)),
3015 bfd_h_put_32 (abfd, elf_gp (abfd), buf);
3016 if (bfd_write (buf, 1, 4, abfd) != 4)
3023 if (hdr->bfd_section != NULL)
3025 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3027 if (strcmp (name, ".sdata") == 0
3028 || strcmp (name, ".lit8") == 0
3029 || strcmp (name, ".lit4") == 0)
3031 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3032 hdr->sh_type = SHT_PROGBITS;
3034 else if (strcmp (name, ".sbss") == 0)
3036 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
3037 hdr->sh_type = SHT_NOBITS;
3039 else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
3041 hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
3042 hdr->sh_type = SHT_PROGBITS;
3044 else if (strcmp (name, ".compact_rel") == 0)
3047 hdr->sh_type = SHT_PROGBITS;
3049 else if (strcmp (name, ".rtproc") == 0)
3051 if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
3053 unsigned int adjust;
3055 adjust = hdr->sh_size % hdr->sh_addralign;
3057 hdr->sh_size += hdr->sh_addralign - adjust;
3066 /* MIPS ELF uses two common sections. One is the usual one, and the
3067 other is for small objects. All the small objects are kept
3068 together, and then referenced via the gp pointer, which yields
3069 faster assembler code. This is what we use for the small common
3070 section. This approach is copied from ecoff.c. */
3071 static asection mips_elf_scom_section;
3072 static asymbol mips_elf_scom_symbol;
3073 static asymbol *mips_elf_scom_symbol_ptr;
3075 /* MIPS ELF also uses an acommon section, which represents an
3076 allocated common symbol which may be overridden by a
3077 definition in a shared library. */
3078 static asection mips_elf_acom_section;
3079 static asymbol mips_elf_acom_symbol;
3080 static asymbol *mips_elf_acom_symbol_ptr;
3082 /* The Irix 5 support uses two virtual sections, which represent
3083 text/data symbols defined in dynamic objects. */
3084 static asection mips_elf_text_section;
3085 static asection *mips_elf_text_section_ptr;
3086 static asymbol mips_elf_text_symbol;
3087 static asymbol *mips_elf_text_symbol_ptr;
3089 static asection mips_elf_data_section;
3090 static asection *mips_elf_data_section_ptr;
3091 static asymbol mips_elf_data_symbol;
3092 static asymbol *mips_elf_data_symbol_ptr;
3094 /* Handle the special MIPS section numbers that a symbol may use.
3095 This is used for both the 32-bit and the 64-bit ABI. */
3098 _bfd_mips_elf_symbol_processing (abfd, asym)
3102 elf_symbol_type *elfsym;
3104 elfsym = (elf_symbol_type *) asym;
3105 switch (elfsym->internal_elf_sym.st_shndx)
3107 case SHN_MIPS_ACOMMON:
3108 /* This section is used in a dynamically linked executable file.
3109 It is an allocated common section. The dynamic linker can
3110 either resolve these symbols to something in a shared
3111 library, or it can just leave them here. For our purposes,
3112 we can consider these symbols to be in a new section. */
3113 if (mips_elf_acom_section.name == NULL)
3115 /* Initialize the acommon section. */
3116 mips_elf_acom_section.name = ".acommon";
3117 mips_elf_acom_section.flags = SEC_ALLOC;
3118 mips_elf_acom_section.output_section = &mips_elf_acom_section;
3119 mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
3120 mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
3121 mips_elf_acom_symbol.name = ".acommon";
3122 mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
3123 mips_elf_acom_symbol.section = &mips_elf_acom_section;
3124 mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
3126 asym->section = &mips_elf_acom_section;
3130 /* Common symbols less than the GP size are automatically
3131 treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
3132 if (asym->value > elf_gp_size (abfd)
3133 || IRIX_COMPAT (abfd) == ict_irix6)
3136 case SHN_MIPS_SCOMMON:
3137 if (mips_elf_scom_section.name == NULL)
3139 /* Initialize the small common section. */
3140 mips_elf_scom_section.name = ".scommon";
3141 mips_elf_scom_section.flags = SEC_IS_COMMON;
3142 mips_elf_scom_section.output_section = &mips_elf_scom_section;
3143 mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
3144 mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
3145 mips_elf_scom_symbol.name = ".scommon";
3146 mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
3147 mips_elf_scom_symbol.section = &mips_elf_scom_section;
3148 mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
3150 asym->section = &mips_elf_scom_section;
3151 asym->value = elfsym->internal_elf_sym.st_size;
3154 case SHN_MIPS_SUNDEFINED:
3155 asym->section = bfd_und_section_ptr;
3158 #if 0 /* for SGI_COMPAT */
3160 asym->section = mips_elf_text_section_ptr;
3164 asym->section = mips_elf_data_section_ptr;
3170 /* When creating an Irix 5 executable, we need REGINFO and RTPROC
3174 _bfd_mips_elf_additional_program_headers (abfd)
3180 if (!SGI_COMPAT (abfd))
3183 /* See if we need a PT_MIPS_REGINFO segment. */
3184 s = bfd_get_section_by_name (abfd, ".reginfo");
3185 if (s && (s->flags & SEC_LOAD))
3188 /* See if we need a PT_MIPS_OPTIONS segment. */
3189 if (IRIX_COMPAT (abfd) == ict_irix6
3190 && bfd_get_section_by_name (abfd,
3191 MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
3194 /* See if we need a PT_MIPS_RTPROC segment. */
3195 if (IRIX_COMPAT (abfd) == ict_irix5
3196 && bfd_get_section_by_name (abfd, ".dynamic")
3197 && bfd_get_section_by_name (abfd, ".mdebug"))
3203 /* Modify the segment map for an Irix 5 executable. */
3206 _bfd_mips_elf_modify_segment_map (abfd)
3210 struct elf_segment_map *m, **pm;
3212 if (! SGI_COMPAT (abfd))
3215 /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
3217 s = bfd_get_section_by_name (abfd, ".reginfo");
3218 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3220 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3221 if (m->p_type == PT_MIPS_REGINFO)
3225 m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
3229 m->p_type = PT_MIPS_REGINFO;
3233 /* We want to put it after the PHDR and INTERP segments. */
3234 pm = &elf_tdata (abfd)->segment_map;
3236 && ((*pm)->p_type == PT_PHDR
3237 || (*pm)->p_type == PT_INTERP))
3245 /* For IRIX 6, we don't have .mdebug sections, nor does anything but
3246 .dynamic end up in PT_DYNAMIC. However, we do have to insert a
3247 PT_OPTIONS segement immediately following the program header
3249 if (IRIX_COMPAT (abfd) == ict_irix6)
3253 for (s = abfd->sections; s; s = s->next)
3254 if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
3259 struct elf_segment_map *options_segment;
3261 /* Usually, there's a program header table. But, sometimes
3262 there's not (like when running the `ld' testsuite). So,
3263 if there's no program header table, we just put the
3264 options segement at the end. */
3265 for (pm = &elf_tdata (abfd)->segment_map;
3268 if ((*pm)->p_type == PT_PHDR)
3271 options_segment = bfd_zalloc (abfd,
3272 sizeof (struct elf_segment_map));
3273 options_segment->next = *pm;
3274 options_segment->p_type = PT_MIPS_OPTIONS;
3275 options_segment->p_flags = PF_R;
3276 options_segment->p_flags_valid = true;
3277 options_segment->count = 1;
3278 options_segment->sections[0] = s;
3279 *pm = options_segment;
3284 /* If there are .dynamic and .mdebug sections, we make a room
3285 for the RTPROC header. FIXME: Rewrite without section names. */
3286 if (bfd_get_section_by_name (abfd, ".interp") == NULL
3287 && bfd_get_section_by_name (abfd, ".dynamic") != NULL
3288 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
3290 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3291 if (m->p_type == PT_MIPS_RTPROC)
3295 m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
3299 m->p_type = PT_MIPS_RTPROC;
3301 s = bfd_get_section_by_name (abfd, ".rtproc");
3306 m->p_flags_valid = 1;
3314 /* We want to put it after the DYNAMIC segment. */
3315 pm = &elf_tdata (abfd)->segment_map;
3316 while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
3326 /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
3327 .dynstr, .dynsym, and .hash sections, and everything in
3329 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
3330 if ((*pm)->p_type == PT_DYNAMIC)
3335 && strcmp (m->sections[0]->name, ".dynamic") == 0)
3337 static const char *sec_names[] =
3338 { ".dynamic", ".dynstr", ".dynsym", ".hash" };
3341 struct elf_segment_map *n;
3345 for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
3347 s = bfd_get_section_by_name (abfd, sec_names[i]);
3348 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3354 sz = s->_cooked_size;
3357 if (high < s->vma + sz)
3363 for (s = abfd->sections; s != NULL; s = s->next)
3364 if ((s->flags & SEC_LOAD) != 0
3367 + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
3371 n = ((struct elf_segment_map *)
3372 bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *)));
3379 for (s = abfd->sections; s != NULL; s = s->next)
3381 if ((s->flags & SEC_LOAD) != 0
3384 + (s->_cooked_size != 0 ?
3385 s->_cooked_size : s->_raw_size))
3400 /* The structure of the runtime procedure descriptor created by the
3401 loader for use by the static exception system. */
3403 typedef struct runtime_pdr {
3404 bfd_vma adr; /* memory address of start of procedure */
3405 long regmask; /* save register mask */
3406 long regoffset; /* save register offset */
3407 long fregmask; /* save floating point register mask */
3408 long fregoffset; /* save floating point register offset */
3409 long frameoffset; /* frame size */
3410 short framereg; /* frame pointer register */
3411 short pcreg; /* offset or reg of return pc */
3412 long irpss; /* index into the runtime string table */
3414 struct exception_info *exception_info;/* pointer to exception array */
3416 #define cbRPDR sizeof(RPDR)
3417 #define rpdNil ((pRPDR) 0)
3419 /* Swap RPDR (runtime procedure table entry) for output. */
3421 static void ecoff_swap_rpdr_out
3422 PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
3425 ecoff_swap_rpdr_out (abfd, in, ex)
3428 struct rpdr_ext *ex;
3430 /* ecoff_put_off was defined in ecoffswap.h. */
3431 ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr);
3432 bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask);
3433 bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset);
3434 bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask);
3435 bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset);
3436 bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset);
3438 bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg);
3439 bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg);
3441 bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss);
3443 ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info);
3447 /* Read ECOFF debugging information from a .mdebug section into a
3448 ecoff_debug_info structure. */
3451 _bfd_mips_elf_read_ecoff_info (abfd, section, debug)
3454 struct ecoff_debug_info *debug;
3457 const struct ecoff_debug_swap *swap;
3458 char *ext_hdr = NULL;
3460 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3461 memset (debug, 0, sizeof(*debug));
3463 ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
3464 if (ext_hdr == NULL && swap->external_hdr_size != 0)
3467 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
3468 swap->external_hdr_size)
3472 symhdr = &debug->symbolic_header;
3473 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
3475 /* The symbolic header contains absolute file offsets and sizes to
3477 #define READ(ptr, offset, count, size, type) \
3478 if (symhdr->count == 0) \
3479 debug->ptr = NULL; \
3482 debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \
3483 if (debug->ptr == NULL) \
3484 goto error_return; \
3485 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
3486 || (bfd_read (debug->ptr, size, symhdr->count, \
3487 abfd) != size * symhdr->count)) \
3488 goto error_return; \
3491 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
3492 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
3493 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
3494 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
3495 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
3496 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
3498 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
3499 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
3500 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
3501 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
3502 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
3506 debug->adjust = NULL;
3511 if (ext_hdr != NULL)
3513 if (debug->line != NULL)
3515 if (debug->external_dnr != NULL)
3516 free (debug->external_dnr);
3517 if (debug->external_pdr != NULL)
3518 free (debug->external_pdr);
3519 if (debug->external_sym != NULL)
3520 free (debug->external_sym);
3521 if (debug->external_opt != NULL)
3522 free (debug->external_opt);
3523 if (debug->external_aux != NULL)
3524 free (debug->external_aux);
3525 if (debug->ss != NULL)
3527 if (debug->ssext != NULL)
3528 free (debug->ssext);
3529 if (debug->external_fdr != NULL)
3530 free (debug->external_fdr);
3531 if (debug->external_rfd != NULL)
3532 free (debug->external_rfd);
3533 if (debug->external_ext != NULL)
3534 free (debug->external_ext);
3538 /* MIPS ELF local labels start with '$', not 'L'. */
3542 mips_elf_is_local_label_name (abfd, name)
3549 /* On Irix 6, the labels go back to starting with '.', so we accept
3550 the generic ELF local label syntax as well. */
3551 return _bfd_elf_is_local_label_name (abfd, name);
3554 /* MIPS ELF uses a special find_nearest_line routine in order the
3555 handle the ECOFF debugging information. */
3557 struct mips_elf_find_line
3559 struct ecoff_debug_info d;
3560 struct ecoff_find_line i;
3564 _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
3565 functionname_ptr, line_ptr)
3570 const char **filename_ptr;
3571 const char **functionname_ptr;
3572 unsigned int *line_ptr;
3576 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
3577 filename_ptr, functionname_ptr,
3581 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
3582 filename_ptr, functionname_ptr,
3584 ABI_64_P (abfd) ? 8 : 0))
3587 msec = bfd_get_section_by_name (abfd, ".mdebug");
3591 struct mips_elf_find_line *fi;
3592 const struct ecoff_debug_swap * const swap =
3593 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3595 /* If we are called during a link, mips_elf_final_link may have
3596 cleared the SEC_HAS_CONTENTS field. We force it back on here
3597 if appropriate (which it normally will be). */
3598 origflags = msec->flags;
3599 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
3600 msec->flags |= SEC_HAS_CONTENTS;
3602 fi = elf_tdata (abfd)->find_line_info;
3605 bfd_size_type external_fdr_size;
3608 struct fdr *fdr_ptr;
3610 fi = ((struct mips_elf_find_line *)
3611 bfd_zalloc (abfd, sizeof (struct mips_elf_find_line)));
3614 msec->flags = origflags;
3618 if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
3620 msec->flags = origflags;
3624 /* Swap in the FDR information. */
3625 fi->d.fdr = ((struct fdr *)
3627 (fi->d.symbolic_header.ifdMax *
3628 sizeof (struct fdr))));
3629 if (fi->d.fdr == NULL)
3631 msec->flags = origflags;
3634 external_fdr_size = swap->external_fdr_size;
3635 fdr_ptr = fi->d.fdr;
3636 fraw_src = (char *) fi->d.external_fdr;
3637 fraw_end = (fraw_src
3638 + fi->d.symbolic_header.ifdMax * external_fdr_size);
3639 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
3640 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
3642 elf_tdata (abfd)->find_line_info = fi;
3644 /* Note that we don't bother to ever free this information.
3645 find_nearest_line is either called all the time, as in
3646 objdump -l, so the information should be saved, or it is
3647 rarely called, as in ld error messages, so the memory
3648 wasted is unimportant. Still, it would probably be a
3649 good idea for free_cached_info to throw it away. */
3652 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
3653 &fi->i, filename_ptr, functionname_ptr,
3656 msec->flags = origflags;
3660 msec->flags = origflags;
3663 /* Fall back on the generic ELF find_nearest_line routine. */
3665 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
3666 filename_ptr, functionname_ptr,
3670 /* The mips16 compiler uses a couple of special sections to handle
3671 floating point arguments.
3673 Section names that look like .mips16.fn.FNNAME contain stubs that
3674 copy floating point arguments from the fp regs to the gp regs and
3675 then jump to FNNAME. If any 32 bit function calls FNNAME, the
3676 call should be redirected to the stub instead. If no 32 bit
3677 function calls FNNAME, the stub should be discarded. We need to
3678 consider any reference to the function, not just a call, because
3679 if the address of the function is taken we will need the stub,
3680 since the address might be passed to a 32 bit function.
3682 Section names that look like .mips16.call.FNNAME contain stubs
3683 that copy floating point arguments from the gp regs to the fp
3684 regs and then jump to FNNAME. If FNNAME is a 32 bit function,
3685 then any 16 bit function that calls FNNAME should be redirected
3686 to the stub instead. If FNNAME is not a 32 bit function, the
3687 stub should be discarded.
3689 .mips16.call.fp.FNNAME sections are similar, but contain stubs
3690 which call FNNAME and then copy the return value from the fp regs
3691 to the gp regs. These stubs store the return value in $18 while
3692 calling FNNAME; any function which might call one of these stubs
3693 must arrange to save $18 around the call. (This case is not
3694 needed for 32 bit functions that call 16 bit functions, because
3695 16 bit functions always return floating point values in both
3698 Note that in all cases FNNAME might be defined statically.
3699 Therefore, FNNAME is not used literally. Instead, the relocation
3700 information will indicate which symbol the section is for.
3702 We record any stubs that we find in the symbol table. */
3704 #define FN_STUB ".mips16.fn."
3705 #define CALL_STUB ".mips16.call."
3706 #define CALL_FP_STUB ".mips16.call.fp."
3708 /* MIPS ELF linker hash table. */
3710 struct mips_elf_link_hash_table
3712 struct elf_link_hash_table root;
3714 /* We no longer use this. */
3715 /* String section indices for the dynamic section symbols. */
3716 bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
3718 /* The number of .rtproc entries. */
3719 bfd_size_type procedure_count;
3720 /* The size of the .compact_rel section (if SGI_COMPAT). */
3721 bfd_size_type compact_rel_size;
3722 /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
3723 entry is set to the address of __rld_obj_head as in Irix 5. */
3724 boolean use_rld_obj_head;
3725 /* This is the value of the __rld_map or __rld_obj_head symbol. */
3727 /* This is set if we see any mips16 stub sections. */
3728 boolean mips16_stubs_seen;
3731 /* Look up an entry in a MIPS ELF linker hash table. */
3733 #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
3734 ((struct mips_elf_link_hash_entry *) \
3735 elf_link_hash_lookup (&(table)->root, (string), (create), \
3738 /* Traverse a MIPS ELF linker hash table. */
3740 #define mips_elf_link_hash_traverse(table, func, info) \
3741 (elf_link_hash_traverse \
3743 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
3746 /* Get the MIPS ELF linker hash table from a link_info structure. */
3748 #define mips_elf_hash_table(p) \
3749 ((struct mips_elf_link_hash_table *) ((p)->hash))
3751 static boolean mips_elf_output_extsym
3752 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
3754 /* Create an entry in a MIPS ELF linker hash table. */
3756 static struct bfd_hash_entry *
3757 mips_elf_link_hash_newfunc (entry, table, string)
3758 struct bfd_hash_entry *entry;
3759 struct bfd_hash_table *table;
3762 struct mips_elf_link_hash_entry *ret =
3763 (struct mips_elf_link_hash_entry *) entry;
3765 /* Allocate the structure if it has not already been allocated by a
3767 if (ret == (struct mips_elf_link_hash_entry *) NULL)
3768 ret = ((struct mips_elf_link_hash_entry *)
3769 bfd_hash_allocate (table,
3770 sizeof (struct mips_elf_link_hash_entry)));
3771 if (ret == (struct mips_elf_link_hash_entry *) NULL)
3772 return (struct bfd_hash_entry *) ret;
3774 /* Call the allocation method of the superclass. */
3775 ret = ((struct mips_elf_link_hash_entry *)
3776 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3778 if (ret != (struct mips_elf_link_hash_entry *) NULL)
3780 /* Set local fields. */
3781 memset (&ret->esym, 0, sizeof (EXTR));
3782 /* We use -2 as a marker to indicate that the information has
3783 not been set. -1 means there is no associated ifd. */
3785 ret->possibly_dynamic_relocs = 0;
3786 ret->min_dyn_reloc_index = 0;
3787 ret->fn_stub = NULL;
3788 ret->need_fn_stub = false;
3789 ret->call_stub = NULL;
3790 ret->call_fp_stub = NULL;
3793 return (struct bfd_hash_entry *) ret;
3796 /* Create a MIPS ELF linker hash table. */
3798 struct bfd_link_hash_table *
3799 _bfd_mips_elf_link_hash_table_create (abfd)
3802 struct mips_elf_link_hash_table *ret;
3804 ret = ((struct mips_elf_link_hash_table *)
3805 bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table)));
3806 if (ret == (struct mips_elf_link_hash_table *) NULL)
3809 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3810 mips_elf_link_hash_newfunc))
3812 bfd_release (abfd, ret);
3817 /* We no longer use this. */
3818 for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
3819 ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
3821 ret->procedure_count = 0;
3822 ret->compact_rel_size = 0;
3823 ret->use_rld_obj_head = false;
3825 ret->mips16_stubs_seen = false;
3827 return &ret->root.root;
3830 /* Hook called by the linker routine which adds symbols from an object
3831 file. We must handle the special MIPS section numbers here. */
3835 _bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
3837 struct bfd_link_info *info;
3838 const Elf_Internal_Sym *sym;
3840 flagword *flagsp ATTRIBUTE_UNUSED;
3844 if (SGI_COMPAT (abfd)
3845 && (abfd->flags & DYNAMIC) != 0
3846 && strcmp (*namep, "_rld_new_interface") == 0)
3848 /* Skip Irix 5 rld entry name. */
3853 switch (sym->st_shndx)
3856 /* Common symbols less than the GP size are automatically
3857 treated as SHN_MIPS_SCOMMON symbols. */
3858 if (sym->st_size > elf_gp_size (abfd)
3859 || IRIX_COMPAT (abfd) == ict_irix6)
3862 case SHN_MIPS_SCOMMON:
3863 *secp = bfd_make_section_old_way (abfd, ".scommon");
3864 (*secp)->flags |= SEC_IS_COMMON;
3865 *valp = sym->st_size;
3869 /* This section is used in a shared object. */
3870 if (mips_elf_text_section_ptr == NULL)
3872 /* Initialize the section. */
3873 mips_elf_text_section.name = ".text";
3874 mips_elf_text_section.flags = SEC_NO_FLAGS;
3875 mips_elf_text_section.output_section = NULL;
3876 mips_elf_text_section.symbol = &mips_elf_text_symbol;
3877 mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr;
3878 mips_elf_text_symbol.name = ".text";
3879 mips_elf_text_symbol.flags = BSF_SECTION_SYM;
3880 mips_elf_text_symbol.section = &mips_elf_text_section;
3881 mips_elf_text_symbol_ptr = &mips_elf_text_symbol;
3882 mips_elf_text_section_ptr = &mips_elf_text_section;
3884 /* This code used to do *secp = bfd_und_section_ptr if
3885 info->shared. I don't know why, and that doesn't make sense,
3886 so I took it out. */
3887 *secp = mips_elf_text_section_ptr;
3890 case SHN_MIPS_ACOMMON:
3891 /* Fall through. XXX Can we treat this as allocated data? */
3893 /* This section is used in a shared object. */
3894 if (mips_elf_data_section_ptr == NULL)
3896 /* Initialize the section. */
3897 mips_elf_data_section.name = ".data";
3898 mips_elf_data_section.flags = SEC_NO_FLAGS;
3899 mips_elf_data_section.output_section = NULL;
3900 mips_elf_data_section.symbol = &mips_elf_data_symbol;
3901 mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr;
3902 mips_elf_data_symbol.name = ".data";
3903 mips_elf_data_symbol.flags = BSF_SECTION_SYM;
3904 mips_elf_data_symbol.section = &mips_elf_data_section;
3905 mips_elf_data_symbol_ptr = &mips_elf_data_symbol;
3906 mips_elf_data_section_ptr = &mips_elf_data_section;
3908 /* This code used to do *secp = bfd_und_section_ptr if
3909 info->shared. I don't know why, and that doesn't make sense,
3910 so I took it out. */
3911 *secp = mips_elf_data_section_ptr;
3914 case SHN_MIPS_SUNDEFINED:
3915 *secp = bfd_und_section_ptr;
3919 if (SGI_COMPAT (abfd)
3921 && info->hash->creator == abfd->xvec
3922 && strcmp (*namep, "__rld_obj_head") == 0)
3924 struct elf_link_hash_entry *h;
3926 /* Mark __rld_obj_head as dynamic. */
3928 if (! (_bfd_generic_link_add_one_symbol
3929 (info, abfd, *namep, BSF_GLOBAL, *secp,
3930 (bfd_vma) *valp, (const char *) NULL, false,
3931 get_elf_backend_data (abfd)->collect,
3932 (struct bfd_link_hash_entry **) &h)))
3934 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
3935 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3936 h->type = STT_OBJECT;
3938 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
3941 mips_elf_hash_table (info)->use_rld_obj_head = true;
3944 /* If this is a mips16 text symbol, add 1 to the value to make it
3945 odd. This will cause something like .word SYM to come up with
3946 the right value when it is loaded into the PC. */
3947 if (sym->st_other == STO_MIPS16)
3953 /* Structure used to pass information to mips_elf_output_extsym. */
3958 struct bfd_link_info *info;
3959 struct ecoff_debug_info *debug;
3960 const struct ecoff_debug_swap *swap;
3964 /* This routine is used to write out ECOFF debugging external symbol
3965 information. It is called via mips_elf_link_hash_traverse. The
3966 ECOFF external symbol information must match the ELF external
3967 symbol information. Unfortunately, at this point we don't know
3968 whether a symbol is required by reloc information, so the two
3969 tables may wind up being different. We must sort out the external
3970 symbol information before we can set the final size of the .mdebug
3971 section, and we must set the size of the .mdebug section before we
3972 can relocate any sections, and we can't know which symbols are
3973 required by relocation until we relocate the sections.
3974 Fortunately, it is relatively unlikely that any symbol will be
3975 stripped but required by a reloc. In particular, it can not happen
3976 when generating a final executable. */
3979 mips_elf_output_extsym (h, data)
3980 struct mips_elf_link_hash_entry *h;
3983 struct extsym_info *einfo = (struct extsym_info *) data;
3985 asection *sec, *output_section;
3987 if (h->root.indx == -2)
3989 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3990 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
3991 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
3992 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
3994 else if (einfo->info->strip == strip_all
3995 || (einfo->info->strip == strip_some
3996 && bfd_hash_lookup (einfo->info->keep_hash,
3997 h->root.root.root.string,
3998 false, false) == NULL))
4006 if (h->esym.ifd == -2)
4009 h->esym.cobol_main = 0;
4010 h->esym.weakext = 0;
4011 h->esym.reserved = 0;
4012 h->esym.ifd = ifdNil;
4013 h->esym.asym.value = 0;
4014 h->esym.asym.st = stGlobal;
4016 if (SGI_COMPAT (einfo->abfd)
4017 && (h->root.root.type == bfd_link_hash_undefined
4018 || h->root.root.type == bfd_link_hash_undefweak))
4022 /* Use undefined class. Also, set class and type for some
4024 name = h->root.root.root.string;
4025 if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
4026 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
4028 h->esym.asym.sc = scData;
4029 h->esym.asym.st = stLabel;
4030 h->esym.asym.value = 0;
4032 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
4034 h->esym.asym.sc = scAbs;
4035 h->esym.asym.st = stLabel;
4036 h->esym.asym.value =
4037 mips_elf_hash_table (einfo->info)->procedure_count;
4039 else if (strcmp (name, "_gp_disp") == 0)
4041 h->esym.asym.sc = scAbs;
4042 h->esym.asym.st = stLabel;
4043 h->esym.asym.value = elf_gp (einfo->abfd);
4046 h->esym.asym.sc = scUndefined;
4048 else if (h->root.root.type != bfd_link_hash_defined
4049 && h->root.root.type != bfd_link_hash_defweak)
4050 h->esym.asym.sc = scAbs;
4055 sec = h->root.root.u.def.section;
4056 output_section = sec->output_section;
4058 /* When making a shared library and symbol h is the one from
4059 the another shared library, OUTPUT_SECTION may be null. */
4060 if (output_section == NULL)
4061 h->esym.asym.sc = scUndefined;
4064 name = bfd_section_name (output_section->owner, output_section);
4066 if (strcmp (name, ".text") == 0)
4067 h->esym.asym.sc = scText;
4068 else if (strcmp (name, ".data") == 0)
4069 h->esym.asym.sc = scData;
4070 else if (strcmp (name, ".sdata") == 0)
4071 h->esym.asym.sc = scSData;
4072 else if (strcmp (name, ".rodata") == 0
4073 || strcmp (name, ".rdata") == 0)
4074 h->esym.asym.sc = scRData;
4075 else if (strcmp (name, ".bss") == 0)
4076 h->esym.asym.sc = scBss;
4077 else if (strcmp (name, ".sbss") == 0)
4078 h->esym.asym.sc = scSBss;
4079 else if (strcmp (name, ".init") == 0)
4080 h->esym.asym.sc = scInit;
4081 else if (strcmp (name, ".fini") == 0)
4082 h->esym.asym.sc = scFini;
4084 h->esym.asym.sc = scAbs;
4088 h->esym.asym.reserved = 0;
4089 h->esym.asym.index = indexNil;
4092 if (h->root.root.type == bfd_link_hash_common)
4093 h->esym.asym.value = h->root.root.u.c.size;
4094 else if (h->root.root.type == bfd_link_hash_defined
4095 || h->root.root.type == bfd_link_hash_defweak)
4097 if (h->esym.asym.sc == scCommon)
4098 h->esym.asym.sc = scBss;
4099 else if (h->esym.asym.sc == scSCommon)
4100 h->esym.asym.sc = scSBss;
4102 sec = h->root.root.u.def.section;
4103 output_section = sec->output_section;
4104 if (output_section != NULL)
4105 h->esym.asym.value = (h->root.root.u.def.value
4106 + sec->output_offset
4107 + output_section->vma);
4109 h->esym.asym.value = 0;
4111 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4113 /* Set type and value for a symbol with a function stub. */
4114 h->esym.asym.st = stProc;
4115 sec = h->root.root.u.def.section;
4117 h->esym.asym.value = 0;
4120 output_section = sec->output_section;
4121 if (output_section != NULL)
4122 h->esym.asym.value = (h->root.plt.offset
4123 + sec->output_offset
4124 + output_section->vma);
4126 h->esym.asym.value = 0;
4133 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
4134 h->root.root.root.string,
4137 einfo->failed = true;
4144 /* Create a runtime procedure table from the .mdebug section. */
4147 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
4150 struct bfd_link_info *info;
4152 struct ecoff_debug_info *debug;
4154 const struct ecoff_debug_swap *swap;
4155 HDRR *hdr = &debug->symbolic_header;
4157 struct rpdr_ext *erp;
4159 struct pdr_ext *epdr;
4160 struct sym_ext *esym;
4163 unsigned long size, count;
4164 unsigned long sindex;
4168 const char *no_name_func = _("static procedure (no name)");
4176 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4178 sindex = strlen (no_name_func) + 1;
4179 count = hdr->ipdMax;
4182 size = swap->external_pdr_size;
4184 epdr = (struct pdr_ext *) bfd_malloc (size * count);
4188 if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
4191 size = sizeof (RPDR);
4192 rp = rpdr = (RPDR *) bfd_malloc (size * count);
4196 sv = (char **) bfd_malloc (sizeof (char *) * count);
4200 count = hdr->isymMax;
4201 size = swap->external_sym_size;
4202 esym = (struct sym_ext *) bfd_malloc (size * count);
4206 if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
4209 count = hdr->issMax;
4210 ss = (char *) bfd_malloc (count);
4213 if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
4216 count = hdr->ipdMax;
4217 for (i = 0; i < count; i++, rp++)
4219 (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
4220 (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
4221 rp->adr = sym.value;
4222 rp->regmask = pdr.regmask;
4223 rp->regoffset = pdr.regoffset;
4224 rp->fregmask = pdr.fregmask;
4225 rp->fregoffset = pdr.fregoffset;
4226 rp->frameoffset = pdr.frameoffset;
4227 rp->framereg = pdr.framereg;
4228 rp->pcreg = pdr.pcreg;
4230 sv[i] = ss + sym.iss;
4231 sindex += strlen (sv[i]) + 1;
4235 size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
4236 size = BFD_ALIGN (size, 16);
4237 rtproc = (PTR) bfd_alloc (abfd, size);
4240 mips_elf_hash_table (info)->procedure_count = 0;
4244 mips_elf_hash_table (info)->procedure_count = count + 2;
4246 erp = (struct rpdr_ext *) rtproc;
4247 memset (erp, 0, sizeof (struct rpdr_ext));
4249 str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
4250 strcpy (str, no_name_func);
4251 str += strlen (no_name_func) + 1;
4252 for (i = 0; i < count; i++)
4254 ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
4255 strcpy (str, sv[i]);
4256 str += strlen (sv[i]) + 1;
4258 ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr);
4260 /* Set the size and contents of .rtproc section. */
4261 s->_raw_size = size;
4262 s->contents = (bfd_byte *) rtproc;
4264 /* Skip this section later on (I don't think this currently
4265 matters, but someday it might). */
4266 s->link_order_head = (struct bfd_link_order *) NULL;
4295 /* A comparison routine used to sort .gptab entries. */
4298 gptab_compare (p1, p2)
4302 const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
4303 const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
4305 return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
4308 /* We need to use a special link routine to handle the .reginfo and
4309 the .mdebug sections. We need to merge all instances of these
4310 sections together, not write them all out sequentially. */
4313 _bfd_mips_elf_final_link (abfd, info)
4315 struct bfd_link_info *info;
4319 struct bfd_link_order *p;
4320 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
4321 asection *rtproc_sec;
4322 Elf32_RegInfo reginfo;
4323 struct ecoff_debug_info debug;
4324 const struct ecoff_debug_swap *swap
4325 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4326 HDRR *symhdr = &debug.symbolic_header;
4327 PTR mdebug_handle = NULL;
4329 /* If all the things we linked together were PIC, but we're
4330 producing an executable (rather than a shared object), then the
4331 resulting file is CPIC (i.e., it calls PIC code.) */
4333 && !info->relocateable
4334 && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
4336 elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
4337 elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
4340 /* We'd carefully arranged the dynamic symbol indices, and then the
4341 generic size_dynamic_sections renumbered them out from under us.
4342 Rather than trying somehow to prevent the renumbering, just do
4344 if (elf_hash_table (info)->dynamic_sections_created)
4348 struct mips_got_info *g;
4350 /* When we resort, we must tell mips_elf_sort_hash_table what
4351 the lowest index it may use is. That's the number of section
4352 symbols we're going to add. The generic ELF linker only
4353 adds these symbols when building a shared object. Note that
4354 we count the sections after (possibly) removing the .options
4356 if (!mips_elf_sort_hash_table (info, (info->shared
4357 ? bfd_count_sections (abfd) + 1
4361 /* Make sure we didn't grow the global .got region. */
4362 dynobj = elf_hash_table (info)->dynobj;
4363 got = bfd_get_section_by_name (dynobj, ".got");
4364 g = (struct mips_got_info *) elf_section_data (got)->tdata;
4366 if (g->global_gotsym != NULL)
4367 BFD_ASSERT ((elf_hash_table (info)->dynsymcount
4368 - g->global_gotsym->dynindx)
4369 <= g->global_gotno);
4372 /* On IRIX5, we omit the .options section. On IRIX6, however, we
4373 include it, even though we don't process it quite right. (Some
4374 entries are supposed to be merged.) Empirically, we seem to be
4375 better off including it then not. */
4376 if (IRIX_COMPAT (abfd) == ict_irix5)
4377 for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
4379 if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
4381 for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
4382 if (p->type == bfd_indirect_link_order)
4383 p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS;
4384 (*secpp)->link_order_head = NULL;
4385 *secpp = (*secpp)->next;
4386 --abfd->section_count;
4392 /* Get a value for the GP register. */
4393 if (elf_gp (abfd) == 0)
4395 struct bfd_link_hash_entry *h;
4397 h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
4398 if (h != (struct bfd_link_hash_entry *) NULL
4399 && h->type == bfd_link_hash_defined)
4400 elf_gp (abfd) = (h->u.def.value
4401 + h->u.def.section->output_section->vma
4402 + h->u.def.section->output_offset);
4403 else if (info->relocateable)
4407 /* Find the GP-relative section with the lowest offset. */
4409 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4411 && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
4414 /* And calculate GP relative to that. */
4415 elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
4419 /* If the relocate_section function needs to do a reloc
4420 involving the GP value, it should make a reloc_dangerous
4421 callback to warn that GP is not defined. */
4425 /* Go through the sections and collect the .reginfo and .mdebug
4429 gptab_data_sec = NULL;
4430 gptab_bss_sec = NULL;
4431 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4433 if (strcmp (o->name, ".reginfo") == 0)
4435 memset (®info, 0, sizeof reginfo);
4437 /* We have found the .reginfo section in the output file.
4438 Look through all the link_orders comprising it and merge
4439 the information together. */
4440 for (p = o->link_order_head;
4441 p != (struct bfd_link_order *) NULL;
4444 asection *input_section;
4446 Elf32_External_RegInfo ext;
4449 if (p->type != bfd_indirect_link_order)
4451 if (p->type == bfd_fill_link_order)
4456 input_section = p->u.indirect.section;
4457 input_bfd = input_section->owner;
4459 /* The linker emulation code has probably clobbered the
4460 size to be zero bytes. */
4461 if (input_section->_raw_size == 0)
4462 input_section->_raw_size = sizeof (Elf32_External_RegInfo);
4464 if (! bfd_get_section_contents (input_bfd, input_section,
4470 bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
4472 reginfo.ri_gprmask |= sub.ri_gprmask;
4473 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
4474 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
4475 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
4476 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
4478 /* ri_gp_value is set by the function
4479 mips_elf32_section_processing when the section is
4480 finally written out. */
4482 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4483 elf_link_input_bfd ignores this section. */
4484 input_section->flags &=~ SEC_HAS_CONTENTS;
4487 /* Size has been set in mips_elf_always_size_sections */
4488 BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
4490 /* Skip this section later on (I don't think this currently
4491 matters, but someday it might). */
4492 o->link_order_head = (struct bfd_link_order *) NULL;
4497 if (strcmp (o->name, ".mdebug") == 0)
4499 struct extsym_info einfo;
4501 /* We have found the .mdebug section in the output file.
4502 Look through all the link_orders comprising it and merge
4503 the information together. */
4504 symhdr->magic = swap->sym_magic;
4505 /* FIXME: What should the version stamp be? */
4507 symhdr->ilineMax = 0;
4511 symhdr->isymMax = 0;
4512 symhdr->ioptMax = 0;
4513 symhdr->iauxMax = 0;
4515 symhdr->issExtMax = 0;
4518 symhdr->iextMax = 0;
4520 /* We accumulate the debugging information itself in the
4521 debug_info structure. */
4523 debug.external_dnr = NULL;
4524 debug.external_pdr = NULL;
4525 debug.external_sym = NULL;
4526 debug.external_opt = NULL;
4527 debug.external_aux = NULL;
4529 debug.ssext = debug.ssext_end = NULL;
4530 debug.external_fdr = NULL;
4531 debug.external_rfd = NULL;
4532 debug.external_ext = debug.external_ext_end = NULL;
4534 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4535 if (mdebug_handle == (PTR) NULL)
4538 if (SGI_COMPAT (abfd))
4544 static const char * const name[] =
4545 { ".text", ".init", ".fini", ".data",
4546 ".rodata", ".sdata", ".sbss", ".bss" };
4547 static const int sc[] = { scText, scInit, scFini, scData,
4548 scRData, scSData, scSBss, scBss };
4551 esym.cobol_main = 0;
4555 esym.asym.iss = issNil;
4556 esym.asym.st = stLocal;
4557 esym.asym.reserved = 0;
4558 esym.asym.index = indexNil;
4560 for (i = 0; i < 8; i++)
4562 esym.asym.sc = sc[i];
4563 s = bfd_get_section_by_name (abfd, name[i]);
4566 esym.asym.value = s->vma;
4567 last = s->vma + s->_raw_size;
4570 esym.asym.value = last;
4572 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4578 for (p = o->link_order_head;
4579 p != (struct bfd_link_order *) NULL;
4582 asection *input_section;
4584 const struct ecoff_debug_swap *input_swap;
4585 struct ecoff_debug_info input_debug;
4589 if (p->type != bfd_indirect_link_order)
4591 if (p->type == bfd_fill_link_order)
4596 input_section = p->u.indirect.section;
4597 input_bfd = input_section->owner;
4599 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4600 || (get_elf_backend_data (input_bfd)
4601 ->elf_backend_ecoff_debug_swap) == NULL)
4603 /* I don't know what a non MIPS ELF bfd would be
4604 doing with a .mdebug section, but I don't really
4605 want to deal with it. */
4609 input_swap = (get_elf_backend_data (input_bfd)
4610 ->elf_backend_ecoff_debug_swap);
4612 BFD_ASSERT (p->size == input_section->_raw_size);
4614 /* The ECOFF linking code expects that we have already
4615 read in the debugging information and set up an
4616 ecoff_debug_info structure, so we do that now. */
4617 if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
4621 if (! (bfd_ecoff_debug_accumulate
4622 (mdebug_handle, abfd, &debug, swap, input_bfd,
4623 &input_debug, input_swap, info)))
4626 /* Loop through the external symbols. For each one with
4627 interesting information, try to find the symbol in
4628 the linker global hash table and save the information
4629 for the output external symbols. */
4630 eraw_src = input_debug.external_ext;
4631 eraw_end = (eraw_src
4632 + (input_debug.symbolic_header.iextMax
4633 * input_swap->external_ext_size));
4635 eraw_src < eraw_end;
4636 eraw_src += input_swap->external_ext_size)
4640 struct mips_elf_link_hash_entry *h;
4642 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4643 if (ext.asym.sc == scNil
4644 || ext.asym.sc == scUndefined
4645 || ext.asym.sc == scSUndefined)
4648 name = input_debug.ssext + ext.asym.iss;
4649 h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
4650 name, false, false, true);
4651 if (h == NULL || h->esym.ifd != -2)
4657 < input_debug.symbolic_header.ifdMax);
4658 ext.ifd = input_debug.ifdmap[ext.ifd];
4664 /* Free up the information we just read. */
4665 free (input_debug.line);
4666 free (input_debug.external_dnr);
4667 free (input_debug.external_pdr);
4668 free (input_debug.external_sym);
4669 free (input_debug.external_opt);
4670 free (input_debug.external_aux);
4671 free (input_debug.ss);
4672 free (input_debug.ssext);
4673 free (input_debug.external_fdr);
4674 free (input_debug.external_rfd);
4675 free (input_debug.external_ext);
4677 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4678 elf_link_input_bfd ignores this section. */
4679 input_section->flags &=~ SEC_HAS_CONTENTS;
4682 if (SGI_COMPAT (abfd) && info->shared)
4684 /* Create .rtproc section. */
4685 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
4686 if (rtproc_sec == NULL)
4688 flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
4689 | SEC_LINKER_CREATED | SEC_READONLY);
4691 rtproc_sec = bfd_make_section (abfd, ".rtproc");
4692 if (rtproc_sec == NULL
4693 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
4694 || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
4698 if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
4699 info, rtproc_sec, &debug))
4703 /* Build the external symbol information. */
4706 einfo.debug = &debug;
4708 einfo.failed = false;
4709 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
4710 mips_elf_output_extsym,
4715 /* Set the size of the .mdebug section. */
4716 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4718 /* Skip this section later on (I don't think this currently
4719 matters, but someday it might). */
4720 o->link_order_head = (struct bfd_link_order *) NULL;
4725 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
4727 const char *subname;
4730 Elf32_External_gptab *ext_tab;
4733 /* The .gptab.sdata and .gptab.sbss sections hold
4734 information describing how the small data area would
4735 change depending upon the -G switch. These sections
4736 not used in executables files. */
4737 if (! info->relocateable)
4741 for (p = o->link_order_head;
4742 p != (struct bfd_link_order *) NULL;
4745 asection *input_section;
4747 if (p->type != bfd_indirect_link_order)
4749 if (p->type == bfd_fill_link_order)
4754 input_section = p->u.indirect.section;
4756 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4757 elf_link_input_bfd ignores this section. */
4758 input_section->flags &=~ SEC_HAS_CONTENTS;
4761 /* Skip this section later on (I don't think this
4762 currently matters, but someday it might). */
4763 o->link_order_head = (struct bfd_link_order *) NULL;
4765 /* Really remove the section. */
4766 for (secpp = &abfd->sections;
4768 secpp = &(*secpp)->next)
4770 *secpp = (*secpp)->next;
4771 --abfd->section_count;
4776 /* There is one gptab for initialized data, and one for
4777 uninitialized data. */
4778 if (strcmp (o->name, ".gptab.sdata") == 0)
4780 else if (strcmp (o->name, ".gptab.sbss") == 0)
4784 (*_bfd_error_handler)
4785 (_("%s: illegal section name `%s'"),
4786 bfd_get_filename (abfd), o->name);
4787 bfd_set_error (bfd_error_nonrepresentable_section);
4791 /* The linker script always combines .gptab.data and
4792 .gptab.sdata into .gptab.sdata, and likewise for
4793 .gptab.bss and .gptab.sbss. It is possible that there is
4794 no .sdata or .sbss section in the output file, in which
4795 case we must change the name of the output section. */
4796 subname = o->name + sizeof ".gptab" - 1;
4797 if (bfd_get_section_by_name (abfd, subname) == NULL)
4799 if (o == gptab_data_sec)
4800 o->name = ".gptab.data";
4802 o->name = ".gptab.bss";
4803 subname = o->name + sizeof ".gptab" - 1;
4804 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
4807 /* Set up the first entry. */
4809 tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab));
4812 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
4813 tab[0].gt_header.gt_unused = 0;
4815 /* Combine the input sections. */
4816 for (p = o->link_order_head;
4817 p != (struct bfd_link_order *) NULL;
4820 asection *input_section;
4824 bfd_size_type gpentry;
4826 if (p->type != bfd_indirect_link_order)
4828 if (p->type == bfd_fill_link_order)
4833 input_section = p->u.indirect.section;
4834 input_bfd = input_section->owner;
4836 /* Combine the gptab entries for this input section one
4837 by one. We know that the input gptab entries are
4838 sorted by ascending -G value. */
4839 size = bfd_section_size (input_bfd, input_section);
4841 for (gpentry = sizeof (Elf32_External_gptab);
4843 gpentry += sizeof (Elf32_External_gptab))
4845 Elf32_External_gptab ext_gptab;
4846 Elf32_gptab int_gptab;
4852 if (! (bfd_get_section_contents
4853 (input_bfd, input_section, (PTR) &ext_gptab,
4854 gpentry, sizeof (Elf32_External_gptab))))
4860 bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
4862 val = int_gptab.gt_entry.gt_g_value;
4863 add = int_gptab.gt_entry.gt_bytes - last;
4866 for (look = 1; look < c; look++)
4868 if (tab[look].gt_entry.gt_g_value >= val)
4869 tab[look].gt_entry.gt_bytes += add;
4871 if (tab[look].gt_entry.gt_g_value == val)
4877 Elf32_gptab *new_tab;
4880 /* We need a new table entry. */
4881 new_tab = ((Elf32_gptab *)
4882 bfd_realloc ((PTR) tab,
4883 (c + 1) * sizeof (Elf32_gptab)));
4884 if (new_tab == NULL)
4890 tab[c].gt_entry.gt_g_value = val;
4891 tab[c].gt_entry.gt_bytes = add;
4893 /* Merge in the size for the next smallest -G
4894 value, since that will be implied by this new
4897 for (look = 1; look < c; look++)
4899 if (tab[look].gt_entry.gt_g_value < val
4901 || (tab[look].gt_entry.gt_g_value
4902 > tab[max].gt_entry.gt_g_value)))
4906 tab[c].gt_entry.gt_bytes +=
4907 tab[max].gt_entry.gt_bytes;
4912 last = int_gptab.gt_entry.gt_bytes;
4915 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4916 elf_link_input_bfd ignores this section. */
4917 input_section->flags &=~ SEC_HAS_CONTENTS;
4920 /* The table must be sorted by -G value. */
4922 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
4924 /* Swap out the table. */
4925 ext_tab = ((Elf32_External_gptab *)
4926 bfd_alloc (abfd, c * sizeof (Elf32_External_gptab)));
4927 if (ext_tab == NULL)
4933 for (i = 0; i < c; i++)
4934 bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i);
4937 o->_raw_size = c * sizeof (Elf32_External_gptab);
4938 o->contents = (bfd_byte *) ext_tab;
4940 /* Skip this section later on (I don't think this currently
4941 matters, but someday it might). */
4942 o->link_order_head = (struct bfd_link_order *) NULL;
4946 /* Invoke the regular ELF backend linker to do all the work. */
4947 if (ABI_64_P (abfd))
4950 if (!bfd_elf64_bfd_final_link (abfd, info))
4957 else if (!bfd_elf32_bfd_final_link (abfd, info))
4960 /* Now write out the computed sections. */
4962 if (reginfo_sec != (asection *) NULL)
4964 Elf32_External_RegInfo ext;
4966 bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
4967 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
4968 (file_ptr) 0, sizeof ext))
4972 if (mdebug_sec != (asection *) NULL)
4974 BFD_ASSERT (abfd->output_has_begun);
4975 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4977 mdebug_sec->filepos))
4980 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4983 if (gptab_data_sec != (asection *) NULL)
4985 if (! bfd_set_section_contents (abfd, gptab_data_sec,
4986 gptab_data_sec->contents,
4988 gptab_data_sec->_raw_size))
4992 if (gptab_bss_sec != (asection *) NULL)
4994 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
4995 gptab_bss_sec->contents,
4997 gptab_bss_sec->_raw_size))
5001 if (SGI_COMPAT (abfd))
5003 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
5004 if (rtproc_sec != NULL)
5006 if (! bfd_set_section_contents (abfd, rtproc_sec,
5007 rtproc_sec->contents,
5009 rtproc_sec->_raw_size))
5017 /* Handle a MIPS ELF HI16 reloc. */
5020 mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend)
5022 Elf_Internal_Rela *relhi;
5023 Elf_Internal_Rela *rello;
5030 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
5032 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
5035 addend += ((insn & 0xffff) << 16) + addlo;
5037 if ((addlo & 0x8000) != 0)
5039 if ((addend & 0x8000) != 0)
5042 bfd_put_32 (input_bfd,
5043 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
5044 contents + relhi->r_offset);
5047 /* Handle a MIPS ELF local GOT16 reloc. */
5050 mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello,
5055 Elf_Internal_Rela *relhi;
5056 Elf_Internal_Rela *rello;
5060 unsigned int assigned_gotno;
5066 bfd_byte *got_contents;
5067 struct mips_got_info *g;
5069 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
5071 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
5074 addend += ((insn & 0xffff) << 16) + addlo;
5076 if ((addlo & 0x8000) != 0)
5078 if ((addend & 0x8000) != 0)
5081 /* Get a got entry representing requested hipage. */
5082 BFD_ASSERT (elf_section_data (sgot) != NULL);
5083 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5084 BFD_ASSERT (g != NULL);
5086 assigned_gotno = g->assigned_gotno;
5087 got_contents = sgot->contents;
5088 hipage = addend & 0xffff0000;
5090 for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++)
5092 address = bfd_get_32 (input_bfd, got_contents + i * 4);
5093 if (hipage == (address & 0xffff0000))
5097 if (i == assigned_gotno)
5099 if (assigned_gotno >= g->local_gotno)
5101 (*_bfd_error_handler)
5102 (_("more got entries are needed for hipage relocations"));
5103 bfd_set_error (bfd_error_bad_value);
5107 bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4);
5108 ++g->assigned_gotno;
5111 i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4;
5112 bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff),
5113 contents + relhi->r_offset);
5118 /* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */
5121 mips_elf_relocate_global_got (input_bfd, rel, contents, offset)
5123 Elf_Internal_Rela *rel;
5129 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
5130 bfd_put_32 (input_bfd,
5131 (insn & 0xffff0000) | (offset & 0xffff),
5132 contents + rel->r_offset);
5135 /* Returns the GOT section for ABFD. */
5138 mips_elf_got_section (abfd)
5141 return bfd_get_section_by_name (abfd, ".got");
5144 /* Returns the GOT information associated with the link indicated by
5145 INFO. If SGOTP is non-NULL, it is filled in with the GOT
5148 static struct mips_got_info *
5149 mips_elf_got_info (abfd, sgotp)
5154 struct mips_got_info *g;
5156 sgot = mips_elf_got_section (abfd);
5157 BFD_ASSERT (sgot != NULL);
5158 BFD_ASSERT (elf_section_data (sgot) != NULL);
5159 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
5160 BFD_ASSERT (g != NULL);
5167 /* Return whether a relocation is against a local symbol. */
5170 mips_elf_local_relocation_p (input_bfd, relocation, local_sections)
5172 const Elf_Internal_Rela *relocation;
5173 asection **local_sections;
5175 unsigned long r_symndx;
5176 Elf_Internal_Shdr *symtab_hdr;
5178 r_symndx = ELF32_R_SYM (relocation->r_info);
5179 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5180 if (! elf_bad_symtab (input_bfd))
5181 return r_symndx < symtab_hdr->sh_info;
5184 /* The symbol table does not follow the rule that local symbols
5185 must come before globals. */
5186 return local_sections[r_symndx] != NULL;
5190 /* Sign-extend VALUE, which has the indicated number of BITS. */
5193 mips_elf_sign_extend (value, bits)
5197 if (value & (1 << (bits - 1)))
5198 /* VALUE is negative. */
5199 value |= ((bfd_vma) - 1) << bits;
5204 /* Return non-zero if the indicated VALUE has overflowed the maximum
5205 range expressable by a signed number with the indicated number of
5209 mips_elf_overflow_p (value, bits)
5213 bfd_signed_vma svalue = (bfd_signed_vma) value;
5215 if (svalue > (1 << (bits - 1)) - 1)
5216 /* The value is too big. */
5218 else if (svalue < -(1 << (bits - 1)))
5219 /* The value is too small. */
5226 /* Calculate the %high function. */
5229 mips_elf_high (value)
5232 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
5235 /* Calculate the %higher function. */
5238 mips_elf_higher (value)
5239 bfd_vma value ATTRIBUTE_UNUSED;
5242 return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
5245 return (bfd_vma) -1;
5249 /* Calculate the %highest function. */
5252 mips_elf_highest (value)
5253 bfd_vma value ATTRIBUTE_UNUSED;
5256 return ((value + (bfd_vma) 0x800080008000) > 48) & 0xffff;
5259 return (bfd_vma) -1;
5263 /* Returns the GOT index for the global symbol indicated by H. */
5266 mips_elf_global_got_index (abfd, h)
5268 struct elf_link_hash_entry *h;
5272 struct mips_got_info *g;
5274 g = mips_elf_got_info (abfd, &sgot);
5276 /* Once we determine the global GOT entry with the lowest dynamic
5277 symbol table index, we must put all dynamic symbols with greater
5278 indices into the GOT. That makes it easy to calculate the GOT
5280 BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
5281 index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
5282 * MIPS_ELF_GOT_SIZE (abfd));
5283 BFD_ASSERT (index < sgot->_raw_size);
5288 /* Returns the offset for the entry at the INDEXth position
5292 mips_elf_got_offset_from_index (dynobj, output_bfd, index)
5300 sgot = mips_elf_got_section (dynobj);
5301 gp = _bfd_get_gp_value (output_bfd);
5302 return (sgot->output_section->vma + sgot->output_offset + index -
5306 /* If H is a symbol that needs a global GOT entry, but has a dynamic
5307 symbol table index lower than any we've seen to date, record it for
5311 mips_elf_record_global_got_symbol (h, info, g)
5312 struct elf_link_hash_entry *h;
5313 struct bfd_link_info *info;
5314 struct mips_got_info *g ATTRIBUTE_UNUSED;
5316 /* A global symbol in the GOT must also be in the dynamic symbol
5318 if (h->dynindx == -1
5319 && !bfd_elf32_link_record_dynamic_symbol (info, h))
5322 /* If we've already marked this entry as need GOT space, we don't
5323 need to do it again. */
5324 if (h->got.offset != (bfd_vma) - 1)
5327 /* By setting this to a value other than -1, we are indicating that
5328 there needs to be a GOT entry for H. */
5334 /* This structure is passed to mips_elf_sort_hash_table_f when sorting
5335 the dynamic symbols. */
5337 struct mips_elf_hash_sort_data
5339 /* The symbol in the global GOT with the lowest dynamic symbol table
5341 struct elf_link_hash_entry *low;
5342 /* The least dynamic symbol table index corresponding to a symbol
5343 with a GOT entry. */
5344 long min_got_dynindx;
5345 /* The greatest dynamic symbol table index not corresponding to a
5346 symbol without a GOT entry. */
5347 long max_non_got_dynindx;
5350 /* If H needs a GOT entry, assign it the highest available dynamic
5351 index. Otherwise, assign it the lowest available dynamic
5355 mips_elf_sort_hash_table_f (h, data)
5356 struct mips_elf_link_hash_entry *h;
5359 struct mips_elf_hash_sort_data *hsd
5360 = (struct mips_elf_hash_sort_data *) data;
5362 /* Symbols without dynamic symbol table entries aren't interesting
5364 if (h->root.dynindx == -1)
5367 if (h->root.got.offset != 0)
5368 h->root.dynindx = hsd->max_non_got_dynindx++;
5371 h->root.dynindx = --hsd->min_got_dynindx;
5372 hsd->low = (struct elf_link_hash_entry *) h;
5378 /* Sort the dynamic symbol table so that symbols that need GOT entries
5379 appear towards the end. This reduces the amount of GOT space
5380 required. MAX_LOCAL is used to set the number of local symbols
5381 known to be in the dynamic symbol table. During
5382 mips_elf_size_dynamic_sections, this value is 1. Afterward, the
5383 section symbols are added and the count is higher. */
5386 mips_elf_sort_hash_table (info, max_local)
5387 struct bfd_link_info *info;
5388 unsigned long max_local;
5390 struct mips_elf_hash_sort_data hsd;
5391 struct mips_got_info *g;
5394 dynobj = elf_hash_table (info)->dynobj;
5397 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
5398 hsd.max_non_got_dynindx = max_local;
5399 mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
5400 elf_hash_table (info)),
5401 mips_elf_sort_hash_table_f,
5404 /* There shoud have been enough room in the symbol table to
5405 accomodate both the GOT and non-GOT symbols. */
5406 BFD_ASSERT (hsd.min_got_dynindx == hsd.max_non_got_dynindx);
5408 /* Now we know which dynamic symbol has the lowest dynamic symbol
5409 table index in the GOT. */
5410 g = mips_elf_got_info (dynobj, NULL);
5411 g->global_gotsym = hsd.low;
5416 /* Create a local GOT entry for VALUE. Return the index of the entry,
5417 or -1 if it could not be created. */
5420 mips_elf_create_local_got_entry (abfd, g, sgot, value)
5422 struct mips_got_info *g;
5426 if (g->assigned_gotno >= g->local_gotno)
5428 /* We didn't allocate enough space in the GOT. */
5429 (*_bfd_error_handler)
5430 (_("not enough GOT space for local GOT entries"));
5431 bfd_set_error (bfd_error_bad_value);
5432 return (bfd_vma) -1;
5435 MIPS_ELF_PUT_WORD (abfd, value,
5437 + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
5438 return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
5441 /* Returns the GOT offset at which the indicated address can be found.
5442 If there is not yet a GOT entry for this value, create one. Returns
5443 -1 if no satisfactory GOT offset can be found. */
5446 mips_elf_local_got_index (abfd, info, value)
5448 struct bfd_link_info *info;
5452 struct mips_got_info *g;
5455 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5457 /* Look to see if we already have an appropriate entry. */
5458 for (entry = (sgot->contents
5459 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5460 entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5461 entry += MIPS_ELF_GOT_SIZE (abfd))
5463 bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
5464 if (address == value)
5465 return entry - sgot->contents;
5468 return mips_elf_create_local_got_entry (abfd, g, sgot, value);
5471 /* Find a GOT entry that is within 32KB of the VALUE. These entries
5472 are supposed to be placed at small offsets in the GOT, i.e.,
5473 within 32KB of GP. Return the index into the GOT for this page,
5474 and store the offset from this entry to the desired address in
5475 OFFSETP, if it is non-NULL. */
5478 mips_elf_got_page (abfd, info, value, offsetp)
5480 struct bfd_link_info *info;
5485 struct mips_got_info *g;
5487 bfd_byte *last_entry;
5491 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5493 /* Look to see if we aleady have an appropriate entry. */
5494 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5495 for (entry = (sgot->contents
5496 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5497 entry != last_entry;
5498 entry += MIPS_ELF_GOT_SIZE (abfd))
5500 address = MIPS_ELF_GET_WORD (abfd, entry);
5502 if (!mips_elf_overflow_p (value - address, 16))
5504 /* This entry will serve as the page pointer. We can add a
5505 16-bit number to it to get the actual address. */
5506 index = entry - sgot->contents;
5511 /* If we didn't have an appropriate entry, we create one now. */
5512 if (entry == last_entry)
5513 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
5517 address = MIPS_ELF_GET_WORD (abfd, entry);
5518 *offsetp = value - address;
5524 /* Find a GOT entry whose higher-order 16 bits are the same as those
5525 for value. Return the index into the GOT for this entry. */
5528 mips_elf_got16_entry (abfd, info, value)
5530 struct bfd_link_info *info;
5534 struct mips_got_info *g;
5536 bfd_byte *last_entry;
5540 value &= 0xffff0000;
5541 g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
5543 /* Look to see if we already have an appropriate entry. */
5544 last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
5545 for (entry = (sgot->contents
5546 + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
5547 entry != last_entry;
5548 entry += MIPS_ELF_GOT_SIZE (abfd))
5550 address = MIPS_ELF_GET_WORD (abfd, entry);
5551 if ((address & 0xffff0000) == value)
5553 /* This entry has the right high-order 16 bits. */
5554 index = MIPS_ELF_GOT_SIZE (abfd) * (entry - sgot->contents);
5559 /* If we didn't have an appropriate entry, we create one now. */
5560 if (entry == last_entry)
5561 index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
5566 /* Sets *ADDENDP to the addend for the first R_MIPS_LO16 relocation
5567 found, beginning with RELOCATION. RELEND is one-past-the-end of
5568 the relocation table. */
5571 mips_elf_next_lo16_addend (relocation, relend, addendp)
5572 const Elf_Internal_Rela *relocation;
5573 const Elf_Internal_Rela *relend;
5576 /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
5577 immediately following. However, for the IRIX6 ABI, the next
5578 relocation may be a composed relocation consisting of several
5579 relocations for the same address. In that case, the R_MIPS_LO16
5580 relocation may occur as one of these. We permit a similar
5581 extension in general, as that is useful for GCC. */
5582 while (relocation < relend)
5584 if (ELF32_R_TYPE (relocation->r_info) == R_MIPS_LO16)
5586 *addendp = relocation->r_addend;
5593 /* We didn't find it. */
5594 bfd_set_error (bfd_error_bad_value);
5598 /* Create a rel.dyn relocation for the dynamic linker to resolve. The
5599 relocatin is against the symbol with the dynamic symbol table index
5600 DYNINDX. REL is the original relocation, which is now being made
5604 mips_elf_create_dynamic_relocation (output_bfd, info, rel, dynindx,
5605 addend, input_section)
5607 struct bfd_link_info *info;
5608 const Elf_Internal_Rela *rel;
5611 asection *input_section;
5613 Elf_Internal_Rel outrel;
5619 r_type = ELF32_R_TYPE (rel->r_info);
5620 dynobj = elf_hash_table (info)->dynobj;
5622 = bfd_get_section_by_name (dynobj,
5623 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
5624 BFD_ASSERT (sreloc != NULL);
5628 /* The symbol for the relocation is the same as it was for the
5629 original relocation. */
5630 outrel.r_info = ELF32_R_INFO (dynindx, R_MIPS_REL32);
5632 /* The offset for the dynamic relocation is the same as for the
5633 original relocation, adjusted by the offset at which the original
5634 section is output. */
5635 if (elf_section_data (input_section)->stab_info == NULL)
5636 outrel.r_offset = rel->r_offset;
5641 off = (_bfd_stab_section_offset
5642 (output_bfd, &elf_hash_table (info)->stab_info,
5644 &elf_section_data (input_section)->stab_info,
5646 if (off == (bfd_vma) -1)
5648 outrel.r_offset = off;
5650 outrel.r_offset += (input_section->output_section->vma
5651 + input_section->output_offset);
5653 /* If we've decided to skip this relocation, just output an emtpy
5656 memset (&outrel, 0, sizeof (outrel));
5658 if (ABI_64_P (output_bfd))
5660 (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
5661 (output_bfd, &outrel,
5663 + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
5666 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
5667 (((Elf32_External_Rel *)
5669 + sreloc->reloc_count));
5670 ++sreloc->reloc_count;
5672 /* Make sure the output section is writable. The dynamic linker
5673 will be writing to it. */
5674 elf_section_data (input_section->output_section)->this_hdr.sh_flags
5677 /* On IRIX5, make an entry of compact relocation info. */
5678 if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
5680 asection* scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
5685 Elf32_crinfo cptrel;
5687 mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
5688 cptrel.vaddr = (rel->r_offset
5689 + input_section->output_section->vma
5690 + input_section->output_offset);
5691 if (r_type == R_MIPS_REL32)
5692 mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
5694 mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
5695 mips_elf_set_cr_dist2to (cptrel, 0);
5696 cptrel.konst = addend;
5698 cr = (scpt->contents
5699 + sizeof (Elf32_External_compact_rel));
5700 bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
5701 ((Elf32_External_crinfo *) cr
5702 + scpt->reloc_count));
5703 ++scpt->reloc_count;
5707 return sreloc->reloc_count - 1;
5710 /* Calculate the value produced by the RELOCATION (which comes from
5711 the INPUT_BFD). The ADDEND is the addend to use for this
5712 RELOCATION; RELOCATION->R_ADDEND is ignored.
5714 The result of the relocation calculation is stored in VALUEP.
5715 REQUIRE_JALXP indicates whether or not the opcode used with this
5716 relocation must be JALX.
5718 This function returns bfd_reloc_continue if the caller need take no
5719 further action regarding this relocation, bfd_reloc_notsupported if
5720 something goes dramatically wrong, bfd_reloc_overflow if an
5721 overflow occurs, and bfd_reloc_ok to indicate success. */
5723 static bfd_reloc_status_type
5724 mips_elf_calculate_relocation (abfd,
5738 asection *input_section;
5739 struct bfd_link_info *info;
5740 const Elf_Internal_Rela *relocation;
5742 reloc_howto_type *howto;
5743 Elf_Internal_Sym *local_syms;
5744 asection **local_sections;
5747 boolean *require_jalxp;
5749 /* The eventual value we will return. */
5751 /* The address of the symbol against which the relocation is
5754 /* The final GP value to be used for the relocatable, executable, or
5755 shared object file being produced. */
5756 bfd_vma gp = (bfd_vma) - 1;
5757 /* The place (section offset or address) of the storage unit being
5760 /* The value of GP used to create the relocatable object. */
5761 bfd_vma gp0 = (bfd_vma) - 1;
5762 /* The offset into the global offset table at which the address of
5763 the relocation entry symbol, adjusted by the addend, resides
5764 during execution. */
5765 bfd_vma g = (bfd_vma) - 1;
5766 /* The section in which the symbol referenced by the relocation is
5768 asection *sec = NULL;
5769 struct mips_elf_link_hash_entry* h = NULL;
5770 /* True if the symbol referred to by this relocation is a local
5773 /* True if the symbol referred to by this relocation is "_gp_disp". */
5774 boolean gp_disp_p = false;
5775 Elf_Internal_Shdr *symtab_hdr;
5777 unsigned long r_symndx;
5779 /* True if overflow occurred during the calculation of the
5780 relocation value. */
5781 boolean overflowed_p;
5782 /* True if this relocation refers to a MIPS16 function. */
5783 boolean target_is_16_bit_code_p = false;
5785 /* Parse the relocation. */
5786 r_symndx = ELF32_R_SYM (relocation->r_info);
5787 r_type = ELF32_R_TYPE (relocation->r_info);
5788 p = (input_section->output_section->vma
5789 + input_section->output_offset
5790 + relocation->r_offset);
5792 /* Assume that there will be no overflow. */
5793 overflowed_p = false;
5795 /* Figure out whether or not the symbol is local, and get the offset
5796 used in the array of hash table entries. */
5797 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5798 local_p = mips_elf_local_relocation_p (input_bfd, relocation,
5800 if (! elf_bad_symtab (input_bfd))
5801 extsymoff = symtab_hdr->sh_info;
5804 /* The symbol table does not follow the rule that local symbols
5805 must come before globals. */
5809 /* Figure out the value of the symbol. */
5812 Elf_Internal_Sym *sym;
5814 sym = local_syms + r_symndx;
5815 sec = local_sections[r_symndx];
5817 symbol = sec->output_section->vma + sec->output_offset;
5818 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
5819 symbol += sym->st_value;
5821 /* MIPS16 text labels should be treated as odd. */
5822 if (sym->st_other == STO_MIPS16)
5825 /* Record the name of this symbol, for our caller. */
5826 *namep = bfd_elf_string_from_elf_section (input_bfd,
5827 symtab_hdr->sh_link,
5830 *namep = bfd_section_name (input_bfd, sec);
5832 target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
5836 /* For global symbols we look up the symbol in the hash-table. */
5837 h = ((struct mips_elf_link_hash_entry *)
5838 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
5839 /* Find the real hash-table entry for this symbol. */
5840 while (h->root.type == bfd_link_hash_indirect
5841 || h->root.type == bfd_link_hash_warning)
5842 h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
5844 /* Record the name of this symbol, for our caller. */
5845 *namep = h->root.root.root.string;
5847 /* See if this is the special _gp_disp symbol. Note that such a
5848 symbol must always be a global symbol. */
5849 if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
5851 /* Relocations against _gp_disp are permitted only with
5852 R_MIPS_HI16 and R_MIPS_LO16 relocations. */
5853 if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
5854 return bfd_reloc_notsupported;
5858 /* If this symbol is defined, calculate its address. Note that
5859 _gp_disp is a magic symbol, always implicitly defined by the
5860 linker, so it's inappropriate to check to see whether or not
5862 else if ((h->root.root.type == bfd_link_hash_defined
5863 || h->root.root.type == bfd_link_hash_defweak)
5864 && h->root.root.u.def.section)
5866 sec = h->root.root.u.def.section;
5867 if (sec->output_section)
5868 symbol = (h->root.root.u.def.value
5869 + sec->output_section->vma
5870 + sec->output_offset);
5872 symbol = h->root.root.u.def.value;
5874 else if (h->root.root.type == bfd_link_hash_undefweak)
5875 /* We allow relocations against undefined weak symbols, giving
5876 it the value zero, so that you can undefined weak functions
5877 and check to see if they exist by looking at their
5882 (*info->callbacks->undefined_symbol)
5883 (info, h->root.root.root.string, input_bfd,
5884 input_section, relocation->r_offset);
5885 return bfd_reloc_undefined;
5888 target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
5891 /* If this is a 32-bit call to a 16-bit function with a stub, we
5892 need to redirect the call to the stub, unless we're already *in*
5894 if (r_type != R_MIPS16_26 && !info->relocateable
5895 && ((h != NULL && h->fn_stub != NULL)
5896 || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
5897 && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
5898 && !mips_elf_stub_section_p (input_bfd, input_section))
5900 /* This is a 32-bit call to a 16-bit function. We should
5901 have already noticed that we were going to need the
5904 sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
5907 BFD_ASSERT (h->need_fn_stub);
5911 symbol = sec->output_section->vma + sec->output_offset;
5913 /* If this is a 16-bit call to a 32-bit function with a stub, we
5914 need to redirect the call to the stub. */
5915 else if (r_type == R_MIPS16_26 && !info->relocateable
5917 && (h->call_stub != NULL || h->call_fp_stub != NULL)
5918 && !target_is_16_bit_code_p)
5920 /* If both call_stub and call_fp_stub are defined, we can figure
5921 out which one to use by seeing which one appears in the input
5923 if (h->call_stub != NULL && h->call_fp_stub != NULL)
5928 for (o = input_bfd->sections; o != NULL; o = o->next)
5930 if (strncmp (bfd_get_section_name (input_bfd, o),
5931 CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
5933 sec = h->call_fp_stub;
5940 else if (h->call_stub != NULL)
5943 sec = h->call_fp_stub;
5945 BFD_ASSERT (sec->_raw_size > 0);
5946 symbol = sec->output_section->vma + sec->output_offset;
5949 /* Calls from 16-bit code to 32-bit code and vice versa require the
5950 special jalx instruction. */
5951 *require_jalxp = (!info->relocateable
5952 && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p));
5954 /* If we haven't already determined the GOT offset, or the GP value,
5955 and we're going to need it, get it now. */
5960 case R_MIPS_GOT_DISP:
5961 case R_MIPS_GOT_HI16:
5962 case R_MIPS_CALL_HI16:
5963 case R_MIPS_GOT_LO16:
5964 case R_MIPS_CALL_LO16:
5965 /* Find the index into the GOT where this value is located. */
5968 BFD_ASSERT (addend == 0);
5969 g = mips_elf_global_got_index
5970 (elf_hash_table (info)->dynobj,
5971 (struct elf_link_hash_entry*) h);
5975 g = mips_elf_local_got_index (abfd, info, symbol + addend);
5976 if (g == (bfd_vma) -1)
5980 /* Convert GOT indices to actual offsets. */
5981 g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
5987 case R_MIPS_GPREL16:
5988 case R_MIPS_GPREL32:
5989 gp0 = _bfd_get_gp_value (input_bfd);
5990 gp = _bfd_get_gp_value (abfd);
5997 /* Figure out what kind of relocation is being performed. */
6001 return bfd_reloc_continue;
6004 value = symbol + mips_elf_sign_extend (addend, 16);
6005 overflowed_p = mips_elf_overflow_p (value, 16);
6011 /* If we're creating a shared library, or this relocation is
6012 against a symbol in a shared library, then we can't know
6013 where the symbol will end up. So, we create a relocation
6014 record in the output, and leave the job up to the dynamic
6016 if (info->shared || !sec->output_section)
6018 unsigned int reloc_index;
6020 BFD_ASSERT (h != NULL);
6022 = mips_elf_create_dynamic_relocation (abfd,
6028 if (h->min_dyn_reloc_index == 0
6029 || reloc_index < h->min_dyn_reloc_index)
6030 h->min_dyn_reloc_index = reloc_index;
6031 value = symbol + addend;
6035 if (r_type != R_MIPS_REL32)
6036 value = symbol + addend;
6040 value &= howto->dst_mask;
6044 /* The calculation for R_MIPS_26 is just the same as for an
6045 R_MIPS_26. It's only the storage of the relocated field into
6046 the output file that's different. That's handled in
6047 mips_elf_perform_relocation. So, we just fall through to the
6048 R_MIPS_26 case here. */
6051 value = (((addend << 2) | (p & 0xf0000000)) + symbol) >> 2;
6053 value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
6054 value &= howto->dst_mask;
6060 value = mips_elf_high (addend + symbol);
6061 value &= howto->dst_mask;
6065 value = mips_elf_high (addend + gp - p);
6066 overflowed_p = mips_elf_overflow_p (value, 16);
6072 value = (symbol + addend) & howto->dst_mask;
6075 value = addend + gp - p + 4;
6076 /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
6077 for overflow. But, on, say, Irix 5, relocations against
6078 _gp_disp are normally generated from the .cpload
6079 pseudo-op. It generates code that normally looks like
6082 lui $gp,%hi(_gp_disp)
6083 addiu $gp,$gp,%lo(_gp_disp)
6086 Here $t9 holds the address of the function being called,
6087 as required by the MIPS ELF ABI. The R_MIPS_LO16
6088 relocation can easily overflow in this situation, but the
6089 R_MIPS_HI16 relocation will handle the overflow.
6090 Therefore, we consider this a bug in the MIPS ABI, and do
6091 not check for overflow here. */
6095 case R_MIPS_LITERAL:
6096 /* Because we don't merge literal sections, we can handle this
6097 just like R_MIPS_GPREL16. In the long run, we should merge
6098 shared literals, and then we will need to additional work
6103 case R_MIPS16_GPREL:
6104 /* The R_MIPS16_GPREL performs the same calculation as
6105 R_MIPS_GPREL16, but stores the relocated bits in a different
6106 order. We don't need to do anything special here; the
6107 differences are handled in mips_elf_perform_relocation. */
6108 case R_MIPS_GPREL16:
6110 value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
6112 value = mips_elf_sign_extend (addend, 16) + symbol - gp;
6113 overflowed_p = mips_elf_overflow_p (value, 16);
6119 value = mips_elf_got16_entry (abfd, info, symbol + addend);
6120 if (value == (bfd_vma) -1)
6123 = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6126 overflowed_p = mips_elf_overflow_p (value, 16);
6133 case R_MIPS_GOT_DISP:
6135 overflowed_p = mips_elf_overflow_p (value, 16);
6138 case R_MIPS_GPREL32:
6139 value = (addend + symbol + gp0 - gp) & howto->dst_mask;
6143 value = mips_elf_sign_extend (addend, 16) + symbol - p;
6144 overflowed_p = mips_elf_overflow_p (value, 16);
6147 case R_MIPS_GOT_HI16:
6148 case R_MIPS_CALL_HI16:
6149 /* We're allowed to handle these two relocations identically.
6150 The dynamic linker is allowed to handle the CALL relocations
6151 differently by creating a lazy evaluation stub. */
6153 value = mips_elf_high (value);
6154 value &= howto->dst_mask;
6157 case R_MIPS_GOT_LO16:
6158 case R_MIPS_CALL_LO16:
6159 value = g & howto->dst_mask;
6162 case R_MIPS_GOT_PAGE:
6163 value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
6164 if (value == (bfd_vma) -1)
6166 value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
6169 overflowed_p = mips_elf_overflow_p (value, 16);
6172 case R_MIPS_GOT_OFST:
6173 mips_elf_got_page (abfd, info, symbol + addend, &value);
6174 overflowed_p = mips_elf_overflow_p (value, 16);
6178 value = symbol - addend;
6179 value &= howto->dst_mask;
6183 value = mips_elf_higher (addend + symbol);
6184 value &= howto->dst_mask;
6187 case R_MIPS_HIGHEST:
6188 value = mips_elf_highest (addend + symbol);
6189 value &= howto->dst_mask;
6192 case R_MIPS_SCN_DISP:
6193 value = symbol + addend - sec->output_offset;
6194 value &= howto->dst_mask;
6199 /* Both of these may be ignored. R_MIPS_JALR is an optimization
6200 hint; we could improve performance by honoring that hint. */
6201 return bfd_reloc_continue;
6203 case R_MIPS_GNU_VTINHERIT:
6204 case R_MIPS_GNU_VTENTRY:
6205 /* We don't do anything with these at present. */
6206 return bfd_reloc_continue;
6209 /* An unrecognized relocation type. */
6210 return bfd_reloc_notsupported;
6213 /* Store the VALUE for our caller. */
6215 return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
6218 /* Obtain the field relocated by RELOCATION. */
6221 mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
6222 reloc_howto_type *howto;
6223 const Elf_Internal_Rela *relocation;
6228 bfd_byte *location = contents + relocation->r_offset;
6230 /* Obtain the bytes. */
6231 x = bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location);
6233 if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
6234 || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
6235 && bfd_little_endian (input_bfd))
6236 /* The two 16-bit words will be reversed on a little-endian
6237 system. See mips_elf_perform_relocation for more details. */
6238 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
6243 /* It has been determined that the result of the RELOCATION is the
6244 VALUE. Use HOWTO to place VALUE into the output file at the
6245 appropriate position. The SECTION is the section to which the
6246 relocation applies. If REQUIRE_JALX is true, then the opcode used
6247 for the relocation must be either JAL or JALX, and it is
6248 unconditionally converted to JALX.
6250 Returns false if anything goes wrong. */
6253 mips_elf_perform_relocation (info, howto, relocation, value,
6254 input_bfd, input_section,
6255 contents, require_jalx)
6256 struct bfd_link_info *info;
6257 reloc_howto_type *howto;
6258 const Elf_Internal_Rela *relocation;
6261 asection *input_section;
6263 boolean require_jalx;
6267 int r_type = ELF32_R_TYPE (relocation->r_info);
6269 /* Figure out where the relocation is occurring. */
6270 location = contents + relocation->r_offset;
6272 /* Obtain the current value. */
6273 x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
6275 /* Clear the field we are setting. */
6276 x &= ~howto->dst_mask;
6278 /* If this is the R_MIPS16_26 relocation, we must store the
6279 value in a funny way. */
6280 if (r_type == R_MIPS16_26)
6282 /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
6283 Most mips16 instructions are 16 bits, but these instructions
6286 The format of these instructions is:
6288 +--------------+--------------------------------+
6289 ! JALX ! X! Imm 20:16 ! Imm 25:21 !
6290 +--------------+--------------------------------+
6292 +-----------------------------------------------+
6294 JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
6295 Note that the immediate value in the first word is swapped.
6297 When producing a relocateable object file, R_MIPS16_26 is
6298 handled mostly like R_MIPS_26. In particular, the addend is
6299 stored as a straight 26-bit value in a 32-bit instruction.
6300 (gas makes life simpler for itself by never adjusting a
6301 R_MIPS16_26 reloc to be against a section, so the addend is
6302 always zero). However, the 32 bit instruction is stored as 2
6303 16-bit values, rather than a single 32-bit value. In a
6304 big-endian file, the result is the same; in a little-endian
6305 file, the two 16-bit halves of the 32 bit value are swapped.
6306 This is so that a disassembler can recognize the jal
6309 When doing a final link, R_MIPS16_26 is treated as a 32 bit
6310 instruction stored as two 16-bit values. The addend A is the
6311 contents of the targ26 field. The calculation is the same as
6312 R_MIPS_26. When storing the calculated value, reorder the
6313 immediate value as shown above, and don't forget to store the
6314 value as two 16-bit values.
6316 To put it in MIPS ABI terms, the relocation field is T-targ26-16,
6320 +--------+----------------------+
6324 +--------+----------------------+
6327 +----------+------+-------------+
6331 +----------+--------------------+
6332 where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
6333 ((sub1 << 16) | sub2)).
6335 When producing a relocateable object file, the calculation is
6336 (((A < 2) | (P & 0xf0000000) + S) >> 2)
6337 When producing a fully linked file, the calculation is
6338 let R = (((A < 2) | (P & 0xf0000000) + S) >> 2)
6339 ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
6341 if (!info->relocateable)
6342 /* Shuffle the bits according to the formula above. */
6343 value = (((value & 0x1f0000) << 5)
6344 | ((value & 0x3e00000) >> 5)
6345 | (value & 0xffff));
6348 else if (r_type == R_MIPS16_GPREL)
6350 /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
6351 mode. A typical instruction will have a format like this:
6353 +--------------+--------------------------------+
6354 ! EXTEND ! Imm 10:5 ! Imm 15:11 !
6355 +--------------+--------------------------------+
6356 ! Major ! rx ! ry ! Imm 4:0 !
6357 +--------------+--------------------------------+
6359 EXTEND is the five bit value 11110. Major is the instruction
6362 This is handled exactly like R_MIPS_GPREL16, except that the
6363 addend is retrieved and stored as shown in this diagram; that
6364 is, the Imm fields above replace the V-rel16 field.
6366 All we need to do here is shuffle the bits appropriately. As
6367 above, the two 16-bit halves must be swapped on a
6368 little-endian system. */
6369 value = (((value & 0x7e0) << 16)
6370 | ((value & 0xf800) << 5)
6374 /* Set the field. */
6375 x |= (value & howto->dst_mask);
6377 /* If required, turn JAL into JALX. */
6381 bfd_vma opcode = x >> 26;
6382 bfd_vma jalx_opcode;
6384 /* Check to see if the opcode is already JAL or JALX. */
6385 if (r_type == R_MIPS16_26)
6387 ok = ((opcode == 0x6) || (opcode == 0x7));
6392 ok = ((opcode == 0x3) || (opcode == 0x1d));
6396 /* If the opcode is not JAL or JALX, there's a problem. */
6399 (*_bfd_error_handler)
6400 (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
6401 bfd_get_filename (input_bfd),
6402 input_section->name,
6403 (unsigned long) relocation->r_offset);
6404 bfd_set_error (bfd_error_bad_value);
6408 /* Make this the JALX opcode. */
6409 x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
6412 /* Swap the high- and low-order 16 bits on little-endian systems
6413 when doing a MIPS16 relocation. */
6414 if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
6415 && bfd_little_endian (input_bfd))
6416 x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
6418 /* Put the value into the output. */
6419 bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
6423 /* Returns true if SECTION is a MIPS16 stub section. */
6426 mips_elf_stub_section_p (abfd, section)
6427 bfd *abfd ATTRIBUTE_UNUSED;
6430 const char *name = bfd_get_section_name (abfd, section);
6432 return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
6433 || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
6434 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
6437 /* Relocate a MIPS ELF section. */
6440 _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
6441 contents, relocs, local_syms, local_sections)
6443 struct bfd_link_info *info;
6445 asection *input_section;
6447 Elf_Internal_Rela *relocs;
6448 Elf_Internal_Sym *local_syms;
6449 asection **local_sections;
6451 Elf_Internal_Rela *rel;
6452 const Elf_Internal_Rela *relend;
6454 bfd_vma last_hi16_addend;
6455 boolean use_saved_addend_p = false;
6456 boolean last_hi16_addend_valid_p = false;
6457 struct elf_backend_data *bed;
6459 bed = get_elf_backend_data (output_bfd);
6460 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
6461 for (rel = relocs; rel < relend; ++rel)
6465 reloc_howto_type *howto;
6466 boolean require_jalx;
6467 /* True if the relocation is a RELA relocation, rather than a
6469 boolean rela_relocation_p = true;
6470 int r_type = ELF32_R_TYPE (rel->r_info);
6472 /* Find the relocation howto for this relocation. */
6473 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
6474 /* Some 32-bit code uses R_MIPS_64. In particular, people use
6475 64-bit code, but make sure all their addresses are in the
6476 lowermost or uppermost 32-bit section of the 64-bit address
6477 space. Thus, when they use an R_MIPS_64 they mean what is
6478 usually meant by R_MIPS_32, with the exception that the
6479 stored value is sign-extended to 64 bits. */
6480 howto = elf_mips_howto_table + R_MIPS_32;
6482 howto = mips_rtype_to_howto (r_type);
6484 if (!use_saved_addend_p)
6486 Elf_Internal_Shdr *rel_hdr;
6488 /* If these relocations were originally of the REL variety,
6489 we must pull the addend out of the field that will be
6490 relocated. Otherwise, we simply use the contents of the
6491 RELA relocation. To determine which flavor or relocation
6492 this is, we depend on the fact that the INPUT_SECTION's
6493 REL_HDR is read before its REL_HDR2. */
6494 rel_hdr = &elf_section_data (input_section)->rel_hdr;
6495 if ((size_t) (rel - relocs)
6496 >= (rel_hdr->sh_size / rel_hdr->sh_entsize
6497 * bed->s->int_rels_per_ext_rel))
6498 rel_hdr = elf_section_data (input_section)->rel_hdr2;
6499 if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
6501 /* Note that this is a REL relocation. */
6502 rela_relocation_p = false;
6504 /* Get the addend, which is stored in the input file. */
6505 addend = mips_elf_obtain_contents (howto,
6509 addend &= howto->src_mask;
6511 /* For some kinds of relocations, the ADDEND is a
6512 combination of the addend stored in two different
6514 if (r_type == R_MIPS_HI16
6515 || (r_type == R_MIPS_GOT16
6516 && mips_elf_local_relocation_p (input_bfd, rel,
6519 /* Scan ahead to find a matching R_MIPS_LO16
6523 if (!mips_elf_next_lo16_addend (rel, relend, &l))
6526 /* Save the high-order bit for later. When we
6527 encounter the R_MIPS_LO16 relocation we will need
6530 last_hi16_addend = addend;
6531 last_hi16_addend_valid_p = true;
6533 /* Compute the combined addend. */
6536 else if (r_type == R_MIPS_LO16)
6538 /* Used the saved HI16 addend. */
6539 if (!last_hi16_addend_valid_p)
6541 bfd_set_error (bfd_error_bad_value);
6544 addend |= last_hi16_addend;
6546 else if (r_type == R_MIPS16_GPREL)
6548 /* The addend is scrambled in the object file. See
6549 mips_elf_perform_relocation for details on the
6551 addend = (((addend & 0x1f0000) >> 5)
6552 | ((addend & 0x7e00000) >> 16)
6557 addend = rel->r_addend;
6560 if (info->relocateable)
6562 Elf_Internal_Sym *sym;
6563 unsigned long r_symndx;
6565 /* Since we're just relocating, all we need to do is copy
6566 the relocations back out to the object file, unless
6567 they're against a section symbol, in which case we need
6568 to adjust by the section offset, or unless they're GP
6569 relative in which case we need to adjust by the amount
6570 that we're adjusting GP in this relocateable object. */
6572 if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections))
6573 /* There's nothing to do for non-local relocations. */
6576 r_symndx = ELF32_R_SYM (rel->r_info);
6577 sym = local_syms + r_symndx;
6578 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6579 /* Adjust the addend appropriately. */
6580 addend += local_sections[r_symndx]->output_offset;
6582 if (r_type == R_MIPS16_GPREL
6583 || r_type == R_MIPS_GPREL16
6584 || r_type == R_MIPS_GPREL32)
6585 addend -= (_bfd_get_gp_value (output_bfd)
6586 - _bfd_get_gp_value (input_bfd));
6588 /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
6589 then we only want to write out the high-order 16 bits.
6590 The subsequent R_MIPS_LO16 will handle the low-order bits. */
6591 if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16)
6594 if (rela_relocation_p)
6595 /* If this is a RELA relocation, just update the addend.
6596 We have to cast away constness for REL. */
6597 rel->r_addend = addend;
6600 /* Otherwise, we have to write the value back out. Note
6601 that we use the source mask, rather than the
6602 destination mask because the place to which we are
6603 writing will be source of the addend in the final
6605 addend &= howto->src_mask;
6606 if (!mips_elf_perform_relocation (info, howto, rel, addend,
6607 input_bfd, input_section,
6612 /* Go on to the next relocation. */
6616 /* In the N32 and 64-bit ABIs there may be multiple consecutive
6617 relocations for the same offset. In that case we are
6618 supposed to treat the output of each relocation as the addend
6620 if (rel + 1 < relend
6621 && rel->r_offset == rel[1].r_offset
6622 && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
6623 use_saved_addend_p = true;
6625 use_saved_addend_p = false;
6627 /* Figure out what value we are supposed to relocate. */
6628 switch (mips_elf_calculate_relocation (output_bfd,
6641 case bfd_reloc_continue:
6642 /* There's nothing to do. */
6645 case bfd_reloc_undefined:
6646 /* mips_elf_calculate_relocation already called the
6647 undefined_symbol callback. There's no real point in
6648 trying to perform the relocation at this point, so we
6649 just skip ahead to the next relocation. */
6652 case bfd_reloc_notsupported:
6656 case bfd_reloc_overflow:
6657 if (use_saved_addend_p)
6658 /* Ignore overflow until we reach the last relocation for
6659 a given location. */
6663 BFD_ASSERT (name != NULL);
6664 if (! ((*info->callbacks->reloc_overflow)
6665 (info, name, howto->name, (bfd_vma) 0,
6666 input_bfd, input_section, rel->r_offset)))
6679 /* If we've got another relocation for the address, keep going
6680 until we reach the last one. */
6681 if (use_saved_addend_p)
6687 if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
6688 /* See the comment above about using R_MIPS_64 in the 32-bit
6689 ABI. Until now, we've been using the HOWTO for R_MIPS_32;
6690 that calculated the right value. Now, however, we
6691 sign-extend the 32-bit result to 64-bits, and store it as a
6692 64-bit value. We are especially generous here in that we
6693 go to extreme lengths to support this usage on systems with
6694 only a 32-bit VMA. */
6697 /* Just sign-extend the value, and then fall through to the
6698 normal case, using the R_MIPS_64 howto. That will store
6699 the 64-bit value into a 64-bit area. */
6700 value = mips_elf_sign_extend (value, 64);
6701 howto = elf_mips_howto_table + R_MIPS_64;
6703 /* In the 32-bit VMA case, we must handle sign-extension and
6704 endianness manually. */
6709 if (value & 0x80000000)
6710 sign_bits = 0xffffffff;
6714 /* If only a 32-bit VMA is available do two separate
6716 if (bfd_big_endian (input_bfd))
6718 /* Store the sign-bits (which are most significant)
6720 low_bits = sign_bits;
6726 high_bits = sign_bits;
6728 bfd_put_32 (input_bfd, low_bits,
6729 contents + rel->r_offset);
6730 bfd_put_32 (input_bfd, high_bits,
6731 contents + rel->r_offset + 4);
6736 /* Actually perform the relocation. */
6737 if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
6738 input_section, contents,
6746 /* This hook function is called before the linker writes out a global
6747 symbol. We mark symbols as small common if appropriate. This is
6748 also where we undo the increment of the value for a mips16 symbol. */
6752 _bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
6753 bfd *abfd ATTRIBUTE_UNUSED;
6754 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6755 const char *name ATTRIBUTE_UNUSED;
6756 Elf_Internal_Sym *sym;
6757 asection *input_sec;
6759 /* If we see a common symbol, which implies a relocatable link, then
6760 if a symbol was small common in an input file, mark it as small
6761 common in the output file. */
6762 if (sym->st_shndx == SHN_COMMON
6763 && strcmp (input_sec->name, ".scommon") == 0)
6764 sym->st_shndx = SHN_MIPS_SCOMMON;
6766 if (sym->st_other == STO_MIPS16
6767 && (sym->st_value & 1) != 0)
6773 /* Functions for the dynamic linker. */
6775 /* The name of the dynamic interpreter. This is put in the .interp
6778 #define ELF_DYNAMIC_INTERPRETER(abfd) \
6779 (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
6780 : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
6781 : "/usr/lib/libc.so.1")
6783 /* Create dynamic sections when linking against a dynamic object. */
6786 _bfd_mips_elf_create_dynamic_sections (abfd, info)
6788 struct bfd_link_info *info;
6790 struct elf_link_hash_entry *h;
6792 register asection *s;
6793 const char * const *namep;
6795 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
6796 | SEC_LINKER_CREATED | SEC_READONLY);
6798 /* Mips ABI requests the .dynamic section to be read only. */
6799 s = bfd_get_section_by_name (abfd, ".dynamic");
6802 if (! bfd_set_section_flags (abfd, s, flags))
6806 /* We need to create .got section. */
6807 if (! mips_elf_create_got_section (abfd, info))
6810 /* Create the .msym section on IRIX6. It is used by the dynamic
6811 linker to speed up dynamic relocations, and to avoid computing
6812 the ELF hash for symbols. */
6813 if (IRIX_COMPAT (abfd) == ict_irix6
6814 && !mips_elf_create_msym_section (abfd))
6817 /* Create .stub section. */
6818 if (bfd_get_section_by_name (abfd,
6819 MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
6821 s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
6823 || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
6824 || ! bfd_set_section_alignment (abfd, s,
6825 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6829 if (IRIX_COMPAT (abfd) == ict_irix5
6831 && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
6833 s = bfd_make_section (abfd, ".rld_map");
6835 || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY)
6836 || ! bfd_set_section_alignment (abfd, s,
6837 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6841 /* On IRIX5, we adjust add some additional symbols and change the
6842 alignments of several sections. There is no ABI documentation
6843 indicating that this is necessary on IRIX6, nor any evidence that
6844 the linker takes such action. */
6845 if (IRIX_COMPAT (abfd) == ict_irix5)
6847 for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
6850 if (! (_bfd_generic_link_add_one_symbol
6851 (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
6852 (bfd_vma) 0, (const char *) NULL, false,
6853 get_elf_backend_data (abfd)->collect,
6854 (struct bfd_link_hash_entry **) &h)))
6856 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6857 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6858 h->type = STT_SECTION;
6860 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6864 /* We need to create a .compact_rel section. */
6865 if (! mips_elf_create_compact_rel_section (abfd, info))
6868 /* Change aligments of some sections. */
6869 s = bfd_get_section_by_name (abfd, ".hash");
6871 bfd_set_section_alignment (abfd, s, 4);
6872 s = bfd_get_section_by_name (abfd, ".dynsym");
6874 bfd_set_section_alignment (abfd, s, 4);
6875 s = bfd_get_section_by_name (abfd, ".dynstr");
6877 bfd_set_section_alignment (abfd, s, 4);
6878 s = bfd_get_section_by_name (abfd, ".reginfo");
6880 bfd_set_section_alignment (abfd, s, 4);
6881 s = bfd_get_section_by_name (abfd, ".dynamic");
6883 bfd_set_section_alignment (abfd, s, 4);
6889 if (! (_bfd_generic_link_add_one_symbol
6890 (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
6891 (bfd_vma) 0, (const char *) NULL, false,
6892 get_elf_backend_data (abfd)->collect,
6893 (struct bfd_link_hash_entry **) &h)))
6895 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6896 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6897 h->type = STT_SECTION;
6899 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6902 if (! mips_elf_hash_table (info)->use_rld_obj_head)
6904 /* __rld_map is a four byte word located in the .data section
6905 and is filled in by the rtld to contain a pointer to
6906 the _r_debug structure. Its symbol value will be set in
6907 mips_elf_finish_dynamic_symbol. */
6908 s = bfd_get_section_by_name (abfd, ".rld_map");
6909 BFD_ASSERT (s != NULL);
6912 if (! (_bfd_generic_link_add_one_symbol
6913 (info, abfd, "__rld_map", BSF_GLOBAL, s,
6914 (bfd_vma) 0, (const char *) NULL, false,
6915 get_elf_backend_data (abfd)->collect,
6916 (struct bfd_link_hash_entry **) &h)))
6918 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6919 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6920 h->type = STT_OBJECT;
6922 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
6930 /* Create the .compact_rel section. */
6933 mips_elf_create_compact_rel_section (abfd, info)
6935 struct bfd_link_info *info ATTRIBUTE_UNUSED;
6938 register asection *s;
6940 if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
6942 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
6945 s = bfd_make_section (abfd, ".compact_rel");
6947 || ! bfd_set_section_flags (abfd, s, flags)
6948 || ! bfd_set_section_alignment (abfd, s,
6949 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
6952 s->_raw_size = sizeof (Elf32_External_compact_rel);
6958 /* Create the .got section to hold the global offset table. */
6961 mips_elf_create_got_section (abfd, info)
6963 struct bfd_link_info *info;
6966 register asection *s;
6967 struct elf_link_hash_entry *h;
6968 struct mips_got_info *g;
6970 /* This function may be called more than once. */
6971 if (mips_elf_got_section (abfd))
6974 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
6975 | SEC_LINKER_CREATED);
6977 s = bfd_make_section (abfd, ".got");
6979 || ! bfd_set_section_flags (abfd, s, flags)
6980 || ! bfd_set_section_alignment (abfd, s, 4))
6983 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
6984 linker script because we don't want to define the symbol if we
6985 are not creating a global offset table. */
6987 if (! (_bfd_generic_link_add_one_symbol
6988 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
6989 (bfd_vma) 0, (const char *) NULL, false,
6990 get_elf_backend_data (abfd)->collect,
6991 (struct bfd_link_hash_entry **) &h)))
6993 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
6994 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
6995 h->type = STT_OBJECT;
6998 && ! bfd_elf32_link_record_dynamic_symbol (info, h))
7001 /* The first several global offset table entries are reserved. */
7002 s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
7004 g = (struct mips_got_info *) bfd_alloc (abfd,
7005 sizeof (struct mips_got_info));
7008 g->global_gotsym = NULL;
7009 g->local_gotno = MIPS_RESERVED_GOTNO;
7010 g->assigned_gotno = MIPS_RESERVED_GOTNO;
7011 if (elf_section_data (s) == NULL)
7014 (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
7015 if (elf_section_data (s) == NULL)
7018 elf_section_data (s)->tdata = (PTR) g;
7019 elf_section_data (s)->this_hdr.sh_flags
7020 |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
7025 /* Returns the .msym section for ABFD, creating it if it does not
7026 already exist. Returns NULL to indicate error. */
7029 mips_elf_create_msym_section (abfd)
7034 s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
7037 s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
7039 || !bfd_set_section_flags (abfd, s,
7043 | SEC_LINKER_CREATED
7045 || !bfd_set_section_alignment (abfd, s,
7046 MIPS_ELF_LOG_FILE_ALIGN (abfd)))
7053 /* Add room for N relocations to the .rel.dyn section in ABFD. */
7056 mips_elf_allocate_dynamic_relocations (abfd, n)
7062 s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
7063 BFD_ASSERT (s != NULL);
7065 if (s->_raw_size == 0)
7067 /* Make room for a null element. */
7068 s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
7071 s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
7074 /* Look through the relocs for a section during the first phase, and
7075 allocate space in the global offset table. */
7078 _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
7080 struct bfd_link_info *info;
7082 const Elf_Internal_Rela *relocs;
7086 Elf_Internal_Shdr *symtab_hdr;
7087 struct elf_link_hash_entry **sym_hashes;
7088 struct mips_got_info *g;
7090 const Elf_Internal_Rela *rel;
7091 const Elf_Internal_Rela *rel_end;
7094 struct elf_backend_data *bed;
7096 if (info->relocateable)
7099 dynobj = elf_hash_table (info)->dynobj;
7100 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7101 sym_hashes = elf_sym_hashes (abfd);
7102 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
7104 /* Check for the mips16 stub sections. */
7106 name = bfd_get_section_name (abfd, sec);
7107 if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
7109 unsigned long r_symndx;
7111 /* Look at the relocation information to figure out which symbol
7114 r_symndx = ELF32_R_SYM (relocs->r_info);
7116 if (r_symndx < extsymoff
7117 || sym_hashes[r_symndx - extsymoff] == NULL)
7121 /* This stub is for a local symbol. This stub will only be
7122 needed if there is some relocation in this BFD, other
7123 than a 16 bit function call, which refers to this symbol. */
7124 for (o = abfd->sections; o != NULL; o = o->next)
7126 Elf_Internal_Rela *sec_relocs;
7127 const Elf_Internal_Rela *r, *rend;
7129 /* We can ignore stub sections when looking for relocs. */
7130 if ((o->flags & SEC_RELOC) == 0
7131 || o->reloc_count == 0
7132 || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
7133 sizeof FN_STUB - 1) == 0
7134 || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
7135 sizeof CALL_STUB - 1) == 0
7136 || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
7137 sizeof CALL_FP_STUB - 1) == 0)
7140 sec_relocs = (_bfd_elf32_link_read_relocs
7141 (abfd, o, (PTR) NULL,
7142 (Elf_Internal_Rela *) NULL,
7143 info->keep_memory));
7144 if (sec_relocs == NULL)
7147 rend = sec_relocs + o->reloc_count;
7148 for (r = sec_relocs; r < rend; r++)
7149 if (ELF32_R_SYM (r->r_info) == r_symndx
7150 && ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
7153 if (! info->keep_memory)
7162 /* There is no non-call reloc for this stub, so we do
7163 not need it. Since this function is called before
7164 the linker maps input sections to output sections, we
7165 can easily discard it by setting the SEC_EXCLUDE
7167 sec->flags |= SEC_EXCLUDE;
7171 /* Record this stub in an array of local symbol stubs for
7173 if (elf_tdata (abfd)->local_stubs == NULL)
7175 unsigned long symcount;
7178 if (elf_bad_symtab (abfd))
7179 symcount = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
7181 symcount = symtab_hdr->sh_info;
7182 n = (asection **) bfd_zalloc (abfd,
7183 symcount * sizeof (asection *));
7186 elf_tdata (abfd)->local_stubs = n;
7189 elf_tdata (abfd)->local_stubs[r_symndx] = sec;
7191 /* We don't need to set mips16_stubs_seen in this case.
7192 That flag is used to see whether we need to look through
7193 the global symbol table for stubs. We don't need to set
7194 it here, because we just have a local stub. */
7198 struct mips_elf_link_hash_entry *h;
7200 h = ((struct mips_elf_link_hash_entry *)
7201 sym_hashes[r_symndx - extsymoff]);
7203 /* H is the symbol this stub is for. */
7206 mips_elf_hash_table (info)->mips16_stubs_seen = true;
7209 else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
7210 || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
7212 unsigned long r_symndx;
7213 struct mips_elf_link_hash_entry *h;
7216 /* Look at the relocation information to figure out which symbol
7219 r_symndx = ELF32_R_SYM (relocs->r_info);
7221 if (r_symndx < extsymoff
7222 || sym_hashes[r_symndx - extsymoff] == NULL)
7224 /* This stub was actually built for a static symbol defined
7225 in the same file. We assume that all static symbols in
7226 mips16 code are themselves mips16, so we can simply
7227 discard this stub. Since this function is called before
7228 the linker maps input sections to output sections, we can
7229 easily discard it by setting the SEC_EXCLUDE flag. */
7230 sec->flags |= SEC_EXCLUDE;
7234 h = ((struct mips_elf_link_hash_entry *)
7235 sym_hashes[r_symndx - extsymoff]);
7237 /* H is the symbol this stub is for. */
7239 if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
7240 loc = &h->call_fp_stub;
7242 loc = &h->call_stub;
7244 /* If we already have an appropriate stub for this function, we
7245 don't need another one, so we can discard this one. Since
7246 this function is called before the linker maps input sections
7247 to output sections, we can easily discard it by setting the
7248 SEC_EXCLUDE flag. We can also discard this section if we
7249 happen to already know that this is a mips16 function; it is
7250 not necessary to check this here, as it is checked later, but
7251 it is slightly faster to check now. */
7252 if (*loc != NULL || h->root.other == STO_MIPS16)
7254 sec->flags |= SEC_EXCLUDE;
7259 mips_elf_hash_table (info)->mips16_stubs_seen = true;
7269 sgot = mips_elf_got_section (dynobj);
7274 BFD_ASSERT (elf_section_data (sgot) != NULL);
7275 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
7276 BFD_ASSERT (g != NULL);
7281 bed = get_elf_backend_data (abfd);
7282 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
7283 for (rel = relocs; rel < rel_end; ++rel)
7285 unsigned long r_symndx;
7287 struct elf_link_hash_entry *h;
7289 r_symndx = ELF32_R_SYM (rel->r_info);
7290 r_type = ELF32_R_TYPE (rel->r_info);
7292 if (r_symndx < extsymoff)
7296 h = sym_hashes[r_symndx - extsymoff];
7298 /* This may be an indirect symbol created because of a version. */
7301 while (h->root.type == bfd_link_hash_indirect)
7302 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7306 /* Some relocs require a global offset table. */
7307 if (dynobj == NULL || sgot == NULL)
7313 case R_MIPS_CALL_HI16:
7314 case R_MIPS_CALL_LO16:
7315 case R_MIPS_GOT_HI16:
7316 case R_MIPS_GOT_LO16:
7317 case R_MIPS_GOT_PAGE:
7318 case R_MIPS_GOT_OFST:
7319 case R_MIPS_GOT_DISP:
7321 elf_hash_table (info)->dynobj = dynobj = abfd;
7322 if (! mips_elf_create_got_section (dynobj, info))
7324 g = mips_elf_got_info (dynobj, &sgot);
7331 && (info->shared || h != NULL)
7332 && (sec->flags & SEC_ALLOC) != 0)
7333 elf_hash_table (info)->dynobj = dynobj = abfd;
7341 if (!h && (r_type == R_MIPS_CALL_LO16
7342 || r_type == R_MIPS_GOT_LO16
7343 || r_type == R_MIPS_GOT_DISP
7344 || r_type == R_MIPS_GOT16))
7346 /* We may need a local GOT entry for this relocation. We
7347 don't count R_MIPS_GOT_PAGE because we can estimate the
7348 maximum number of pages needed by looking at the size of
7349 the segment. We don't count R_MIPS_GOT_HI16, or
7350 R_MIPS_CALL_HI16 because these are always followed by an
7351 R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
7353 This estimation is very conservative since we can merge
7354 duplicate entries in the GOT. In order to be less
7355 conservative, we could actually build the GOT here,
7356 rather than in relocate_section. */
7358 sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
7366 (*_bfd_error_handler)
7367 (_("%s: CALL16 reloc at 0x%lx not against global symbol"),
7368 bfd_get_filename (abfd), (unsigned long) rel->r_offset);
7369 bfd_set_error (bfd_error_bad_value);
7374 case R_MIPS_CALL_HI16:
7375 case R_MIPS_CALL_LO16:
7376 /* This symbol requires a global offset table entry. */
7377 if (!mips_elf_record_global_got_symbol (h, info, g))
7380 /* We need a stub, not a plt entry for the undefined
7381 function. But we record it as if it needs plt. See
7382 elf_adjust_dynamic_symbol in elflink.h. */
7383 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
7389 case R_MIPS_GOT_HI16:
7390 case R_MIPS_GOT_LO16:
7391 case R_MIPS_GOT_DISP:
7392 /* This symbol requires a global offset table entry. */
7393 if (h && !mips_elf_record_global_got_symbol (h, info, g))
7400 if ((info->shared || h != NULL)
7401 && (sec->flags & SEC_ALLOC) != 0)
7405 const char *name = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
7407 sreloc = bfd_get_section_by_name (dynobj, name);
7410 sreloc = bfd_make_section (dynobj, name);
7412 || ! bfd_set_section_flags (dynobj, sreloc,
7417 | SEC_LINKER_CREATED
7419 || ! bfd_set_section_alignment (dynobj, sreloc,
7425 /* When creating a shared object, we must copy these
7426 reloc types into the output file as R_MIPS_REL32
7427 relocs. We make room for this reloc in the
7428 .rel.dyn reloc section. */
7429 mips_elf_allocate_dynamic_relocations (dynobj, 1);
7432 struct mips_elf_link_hash_entry *hmips;
7434 /* We only need to copy this reloc if the symbol is
7435 defined in a dynamic object. */
7436 hmips = (struct mips_elf_link_hash_entry *) h;
7437 ++hmips->possibly_dynamic_relocs;
7440 /* Even though we don't directly need a GOT entry for
7441 this symbol, a symbol must have a dynamic symbol
7442 table index greater that DT_GOTSYM if there are
7443 dynamic relocations against it. */
7444 if (!mips_elf_record_global_got_symbol (h, info, g))
7448 if (SGI_COMPAT (dynobj))
7449 mips_elf_hash_table (info)->compact_rel_size +=
7450 sizeof (Elf32_External_crinfo);
7454 case R_MIPS_GPREL16:
7455 case R_MIPS_LITERAL:
7456 case R_MIPS_GPREL32:
7457 if (SGI_COMPAT (dynobj))
7458 mips_elf_hash_table (info)->compact_rel_size +=
7459 sizeof (Elf32_External_crinfo);
7462 /* This relocation describes the C++ object vtable hierarchy.
7463 Reconstruct it for later use during GC. */
7464 case R_MIPS_GNU_VTINHERIT:
7465 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
7469 /* This relocation describes which C++ vtable entries are actually
7470 used. Record for later use during GC. */
7471 case R_MIPS_GNU_VTENTRY:
7472 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
7480 /* If this reloc is not a 16 bit call, and it has a global
7481 symbol, then we will need the fn_stub if there is one.
7482 References from a stub section do not count. */
7484 && r_type != R_MIPS16_26
7485 && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
7486 sizeof FN_STUB - 1) != 0
7487 && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
7488 sizeof CALL_STUB - 1) != 0
7489 && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
7490 sizeof CALL_FP_STUB - 1) != 0)
7492 struct mips_elf_link_hash_entry *mh;
7494 mh = (struct mips_elf_link_hash_entry *) h;
7495 mh->need_fn_stub = true;
7502 /* Return the section that should be marked against GC for a given
7506 _bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
7508 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7509 Elf_Internal_Rela *rel;
7510 struct elf_link_hash_entry *h;
7511 Elf_Internal_Sym *sym;
7513 /* ??? Do mips16 stub sections need to be handled special? */
7517 switch (ELF32_R_TYPE (rel->r_info))
7519 case R_MIPS_GNU_VTINHERIT:
7520 case R_MIPS_GNU_VTENTRY:
7524 switch (h->root.type)
7526 case bfd_link_hash_defined:
7527 case bfd_link_hash_defweak:
7528 return h->root.u.def.section;
7530 case bfd_link_hash_common:
7531 return h->root.u.c.p->section;
7540 if (!(elf_bad_symtab (abfd)
7541 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
7542 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
7543 && sym->st_shndx != SHN_COMMON))
7545 return bfd_section_from_elf_index (abfd, sym->st_shndx);
7552 /* Update the got entry reference counts for the section being removed. */
7555 _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
7556 bfd *abfd ATTRIBUTE_UNUSED;
7557 struct bfd_link_info *info ATTRIBUTE_UNUSED;
7558 asection *sec ATTRIBUTE_UNUSED;
7559 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
7562 Elf_Internal_Shdr *symtab_hdr;
7563 struct elf_link_hash_entry **sym_hashes;
7564 bfd_signed_vma *local_got_refcounts;
7565 const Elf_Internal_Rela *rel, *relend;
7566 unsigned long r_symndx;
7567 struct elf_link_hash_entry *h;
7569 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7570 sym_hashes = elf_sym_hashes (abfd);
7571 local_got_refcounts = elf_local_got_refcounts (abfd);
7573 relend = relocs + sec->reloc_count;
7574 for (rel = relocs; rel < relend; rel++)
7575 switch (ELF32_R_TYPE (rel->r_info))
7579 case R_MIPS_CALL_HI16:
7580 case R_MIPS_CALL_LO16:
7581 case R_MIPS_GOT_HI16:
7582 case R_MIPS_GOT_LO16:
7583 /* ??? It would seem that the existing MIPS code does no sort
7584 of reference counting or whatnot on its GOT and PLT entries,
7585 so it is not possible to garbage collect them at this time. */
7597 /* Adjust a symbol defined by a dynamic object and referenced by a
7598 regular object. The current definition is in some section of the
7599 dynamic object, but we're not including those sections. We have to
7600 change the definition to something the rest of the link can
7604 _bfd_mips_elf_adjust_dynamic_symbol (info, h)
7605 struct bfd_link_info *info;
7606 struct elf_link_hash_entry *h;
7609 struct mips_elf_link_hash_entry *hmips;
7612 dynobj = elf_hash_table (info)->dynobj;
7614 /* Make sure we know what is going on here. */
7615 BFD_ASSERT (dynobj != NULL
7616 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
7617 || h->weakdef != NULL
7618 || ((h->elf_link_hash_flags
7619 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
7620 && (h->elf_link_hash_flags
7621 & ELF_LINK_HASH_REF_REGULAR) != 0
7622 && (h->elf_link_hash_flags
7623 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
7625 /* If this symbol is defined in a dynamic object, we need to copy
7626 any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
7628 hmips = (struct mips_elf_link_hash_entry *) h;
7629 if (! info->relocateable
7630 && hmips->possibly_dynamic_relocs != 0
7631 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
7632 mips_elf_allocate_dynamic_relocations (dynobj,
7633 hmips->possibly_dynamic_relocs);
7635 /* For a function, create a stub, if needed. */
7636 if (h->type == STT_FUNC
7637 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
7639 if (! elf_hash_table (info)->dynamic_sections_created)
7642 /* If this symbol is not defined in a regular file, then set
7643 the symbol to the stub location. This is required to make
7644 function pointers compare as equal between the normal
7645 executable and the shared library. */
7646 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
7648 /* We need .stub section. */
7649 s = bfd_get_section_by_name (dynobj,
7650 MIPS_ELF_STUB_SECTION_NAME (dynobj));
7651 BFD_ASSERT (s != NULL);
7653 h->root.u.def.section = s;
7654 h->root.u.def.value = s->_raw_size;
7656 /* XXX Write this stub address somewhere. */
7657 h->plt.offset = s->_raw_size;
7659 /* Make room for this stub code. */
7660 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
7662 /* The last half word of the stub will be filled with the index
7663 of this symbol in .dynsym section. */
7668 /* If this is a weak symbol, and there is a real definition, the
7669 processor independent code will have arranged for us to see the
7670 real definition first, and we can just use the same value. */
7671 if (h->weakdef != NULL)
7673 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
7674 || h->weakdef->root.type == bfd_link_hash_defweak);
7675 h->root.u.def.section = h->weakdef->root.u.def.section;
7676 h->root.u.def.value = h->weakdef->root.u.def.value;
7680 /* This is a reference to a symbol defined by a dynamic object which
7681 is not a function. */
7686 /* This function is called after all the input files have been read,
7687 and the input sections have been assigned to output sections. We
7688 check for any mips16 stub sections that we can discard. */
7690 static boolean mips_elf_check_mips16_stubs
7691 PARAMS ((struct mips_elf_link_hash_entry *, PTR));
7694 _bfd_mips_elf_always_size_sections (output_bfd, info)
7696 struct bfd_link_info *info;
7700 /* The .reginfo section has a fixed size. */
7701 ri = bfd_get_section_by_name (output_bfd, ".reginfo");
7703 bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo));
7705 if (info->relocateable
7706 || ! mips_elf_hash_table (info)->mips16_stubs_seen)
7709 mips_elf_link_hash_traverse (mips_elf_hash_table (info),
7710 mips_elf_check_mips16_stubs,
7716 /* Check the mips16 stubs for a particular symbol, and see if we can
7721 mips_elf_check_mips16_stubs (h, data)
7722 struct mips_elf_link_hash_entry *h;
7723 PTR data ATTRIBUTE_UNUSED;
7725 if (h->fn_stub != NULL
7726 && ! h->need_fn_stub)
7728 /* We don't need the fn_stub; the only references to this symbol
7729 are 16 bit calls. Clobber the size to 0 to prevent it from
7730 being included in the link. */
7731 h->fn_stub->_raw_size = 0;
7732 h->fn_stub->_cooked_size = 0;
7733 h->fn_stub->flags &= ~ SEC_RELOC;
7734 h->fn_stub->reloc_count = 0;
7735 h->fn_stub->flags |= SEC_EXCLUDE;
7738 if (h->call_stub != NULL
7739 && h->root.other == STO_MIPS16)
7741 /* We don't need the call_stub; this is a 16 bit function, so
7742 calls from other 16 bit functions are OK. Clobber the size
7743 to 0 to prevent it from being included in the link. */
7744 h->call_stub->_raw_size = 0;
7745 h->call_stub->_cooked_size = 0;
7746 h->call_stub->flags &= ~ SEC_RELOC;
7747 h->call_stub->reloc_count = 0;
7748 h->call_stub->flags |= SEC_EXCLUDE;
7751 if (h->call_fp_stub != NULL
7752 && h->root.other == STO_MIPS16)
7754 /* We don't need the call_stub; this is a 16 bit function, so
7755 calls from other 16 bit functions are OK. Clobber the size
7756 to 0 to prevent it from being included in the link. */
7757 h->call_fp_stub->_raw_size = 0;
7758 h->call_fp_stub->_cooked_size = 0;
7759 h->call_fp_stub->flags &= ~ SEC_RELOC;
7760 h->call_fp_stub->reloc_count = 0;
7761 h->call_fp_stub->flags |= SEC_EXCLUDE;
7767 /* Set the sizes of the dynamic sections. */
7770 _bfd_mips_elf_size_dynamic_sections (output_bfd, info)
7772 struct bfd_link_info *info;
7777 struct mips_got_info *g;
7779 dynobj = elf_hash_table (info)->dynobj;
7780 BFD_ASSERT (dynobj != NULL);
7782 if (elf_hash_table (info)->dynamic_sections_created)
7784 /* Set the contents of the .interp section to the interpreter. */
7787 s = bfd_get_section_by_name (dynobj, ".interp");
7788 BFD_ASSERT (s != NULL);
7790 = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
7792 = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
7796 /* The check_relocs and adjust_dynamic_symbol entry points have
7797 determined the sizes of the various dynamic sections. Allocate
7800 for (s = dynobj->sections; s != NULL; s = s->next)
7805 /* It's OK to base decisions on the section name, because none
7806 of the dynobj section names depend upon the input files. */
7807 name = bfd_get_section_name (dynobj, s);
7809 if ((s->flags & SEC_LINKER_CREATED) == 0)
7814 if (strncmp (name, ".rel", 4) == 0)
7816 if (s->_raw_size == 0)
7818 /* We only strip the section if the output section name
7819 has the same name. Otherwise, there might be several
7820 input sections for this output section. FIXME: This
7821 code is probably not needed these days anyhow, since
7822 the linker now does not create empty output sections. */
7823 if (s->output_section != NULL
7825 bfd_get_section_name (s->output_section->owner,
7826 s->output_section)) == 0)
7831 const char *outname;
7834 /* If this relocation section applies to a read only
7835 section, then we probably need a DT_TEXTREL entry.
7836 If the relocation section is .rel.dyn, we always
7837 assert a DT_TEXTREL entry rather than testing whether
7838 there exists a relocation to a read only section or
7840 outname = bfd_get_section_name (output_bfd,
7842 target = bfd_get_section_by_name (output_bfd, outname + 4);
7844 && (target->flags & SEC_READONLY) != 0
7845 && (target->flags & SEC_ALLOC) != 0)
7847 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
7850 /* We use the reloc_count field as a counter if we need
7851 to copy relocs into the output file. */
7853 MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
7857 else if (strncmp (name, ".got", 4) == 0)
7860 bfd_size_type loadable_size = 0;
7861 bfd_size_type local_gotno;
7864 BFD_ASSERT (elf_section_data (s) != NULL);
7865 g = (struct mips_got_info *) elf_section_data (s)->tdata;
7866 BFD_ASSERT (g != NULL);
7868 /* Calculate the total loadable size of the output. That
7869 will give us the maximum number of GOT_PAGE entries
7871 for (sub = info->input_bfds; sub; sub = sub->link_next)
7873 asection *subsection;
7875 for (subsection = sub->sections;
7877 subsection = subsection->next)
7879 if ((subsection->flags & SEC_ALLOC) == 0)
7881 loadable_size += (subsection->_raw_size + 0xf) & ~0xf;
7884 loadable_size += MIPS_FUNCTION_STUB_SIZE;
7886 /* Assume there are two loadable segments consisting of
7887 contiguous sections. Is 5 enough? */
7888 local_gotno = (loadable_size >> 16) + 5;
7889 g->local_gotno += local_gotno;
7890 s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
7892 /* There has to be a global GOT entry for every symbol with
7893 a dynamic symbol table index of DT_MIPS_GOTSYM or
7894 higher. Therefore, it make sense to put those symbols
7895 that need GOT entries at the end of the symbol table. We
7897 if (!mips_elf_sort_hash_table (info, 1))
7900 if (g->global_gotsym != NULL)
7901 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
7903 /* If there are no global symbols, or none requiring
7904 relocations, then GLOBAL_GOTSYM will be NULL. */
7906 g->global_gotno = i;
7907 s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
7909 else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
7911 /* Irix rld assumes that the function stub isn't at the end
7912 of .text section. So put a dummy. XXX */
7913 s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
7915 else if (! info->shared
7916 && ! mips_elf_hash_table (info)->use_rld_obj_head
7917 && strncmp (name, ".rld_map", 8) == 0)
7919 /* We add a room for __rld_map. It will be filled in by the
7920 rtld to contain a pointer to the _r_debug structure. */
7923 else if (SGI_COMPAT (output_bfd)
7924 && strncmp (name, ".compact_rel", 12) == 0)
7925 s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
7926 else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
7928 s->_raw_size = (sizeof (Elf32_External_Msym)
7929 * (elf_hash_table (info)->dynsymcount
7930 + bfd_count_sections (output_bfd)));
7931 else if (strncmp (name, ".init", 5) != 0)
7933 /* It's not one of our sections, so don't allocate space. */
7939 _bfd_strip_section_from_output (s);
7943 /* Allocate memory for the section contents. */
7944 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
7945 if (s->contents == NULL && s->_raw_size != 0)
7947 bfd_set_error (bfd_error_no_memory);
7952 if (elf_hash_table (info)->dynamic_sections_created)
7954 /* Add some entries to the .dynamic section. We fill in the
7955 values later, in elf_mips_finish_dynamic_sections, but we
7956 must add the entries now so that we get the correct size for
7957 the .dynamic section. The DT_DEBUG entry is filled in by the
7958 dynamic linker and used by the debugger. */
7961 if (SGI_COMPAT (output_bfd))
7963 /* SGI object has the equivalence of DT_DEBUG in the
7964 DT_MIPS_RLD_MAP entry. */
7965 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
7969 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
7975 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
7979 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
7982 if (bfd_get_section_by_name (dynobj,
7983 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
7985 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
7988 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
7991 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
7995 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
7998 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
8001 if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
8003 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
8006 s = bfd_get_section_by_name (dynobj, ".liblist");
8007 BFD_ASSERT (s != NULL);
8009 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
8013 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
8016 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
8020 /* Time stamps in executable files are a bad idea. */
8021 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
8026 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
8031 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
8035 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
8038 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
8041 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
8044 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
8047 if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
8050 if (IRIX_COMPAT (dynobj) == ict_irix5
8051 && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
8054 if (IRIX_COMPAT (dynobj) == ict_irix6
8055 && (bfd_get_section_by_name
8056 (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
8057 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
8060 if (bfd_get_section_by_name (dynobj,
8061 MIPS_ELF_MSYM_SECTION_NAME (dynobj))
8062 && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
8069 /* If NAME is one of the special IRIX6 symbols defined by the linker,
8070 adjust it appropriately now. */
8073 mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
8074 bfd *abfd ATTRIBUTE_UNUSED;
8076 Elf_Internal_Sym *sym;
8078 /* The linker script takes care of providing names and values for
8079 these, but we must place them into the right sections. */
8080 static const char* const text_section_symbols[] = {
8083 "__dso_displacement",
8085 "__program_header_table",
8089 static const char* const data_section_symbols[] = {
8097 const char* const *p;
8100 for (i = 0; i < 2; ++i)
8101 for (p = (i == 0) ? text_section_symbols : data_section_symbols;
8104 if (strcmp (*p, name) == 0)
8106 /* All of these symbols are given type STT_SECTION by the
8108 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8110 /* The IRIX linker puts these symbols in special sections. */
8112 sym->st_shndx = SHN_MIPS_TEXT;
8114 sym->st_shndx = SHN_MIPS_DATA;
8120 /* Finish up dynamic symbol handling. We set the contents of various
8121 dynamic sections here. */
8124 _bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
8126 struct bfd_link_info *info;
8127 struct elf_link_hash_entry *h;
8128 Elf_Internal_Sym *sym;
8134 struct mips_got_info *g;
8136 struct mips_elf_link_hash_entry *mh;
8138 dynobj = elf_hash_table (info)->dynobj;
8139 gval = sym->st_value;
8140 mh = (struct mips_elf_link_hash_entry *) h;
8142 if (h->plt.offset != (bfd_vma) -1)
8146 bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
8148 /* This symbol has a stub. Set it up. */
8150 BFD_ASSERT (h->dynindx != -1);
8152 s = bfd_get_section_by_name (dynobj,
8153 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8154 BFD_ASSERT (s != NULL);
8156 /* Fill the stub. */
8158 bfd_put_32 (output_bfd, STUB_LW(output_bfd), p);
8160 bfd_put_32 (output_bfd, STUB_MOVE, p);
8163 /* FIXME: Can h->dynindex be more than 64K? */
8164 if (h->dynindx & 0xffff0000)
8167 bfd_put_32 (output_bfd, STUB_JALR, p);
8169 bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p);
8171 BFD_ASSERT (h->plt.offset <= s->_raw_size);
8172 memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
8174 /* Mark the symbol as undefined. plt.offset != -1 occurs
8175 only for the referenced symbol. */
8176 sym->st_shndx = SHN_UNDEF;
8178 /* The run-time linker uses the st_value field of the symbol
8179 to reset the global offset table entry for this external
8180 to its stub address when unlinking a shared object. */
8181 gval = s->output_section->vma + s->output_offset + h->plt.offset;
8182 sym->st_value = gval;
8185 BFD_ASSERT (h->dynindx != -1);
8187 sgot = mips_elf_got_section (dynobj);
8188 BFD_ASSERT (sgot != NULL);
8189 BFD_ASSERT (elf_section_data (sgot) != NULL);
8190 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8191 BFD_ASSERT (g != NULL);
8193 /* Run through the global symbol table, creating GOT entries for all
8194 the symbols that need them. */
8195 if (g->global_gotsym != NULL
8196 && h->dynindx >= g->global_gotsym->dynindx)
8202 value = sym->st_value;
8204 /* For an entity defined in a shared object, this will be
8205 NULL. (For functions in shared objects for
8206 which we have created stubs, ST_VALUE will be non-NULL.
8207 That's because such the functions are now no longer defined
8208 in a shared object.) */
8209 value = h->root.u.def.value;
8211 offset = mips_elf_global_got_index (dynobj, h);
8212 MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
8215 /* Create a .msym entry, if appropriate. */
8216 smsym = bfd_get_section_by_name (dynobj,
8217 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
8220 Elf32_Internal_Msym msym;
8222 msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
8223 /* It is undocumented what the `1' indicates, but IRIX6 uses
8225 msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
8226 bfd_mips_elf_swap_msym_out
8228 ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
8231 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
8232 name = h->root.root.string;
8233 if (strcmp (name, "_DYNAMIC") == 0
8234 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
8235 sym->st_shndx = SHN_ABS;
8236 else if (strcmp (name, "_DYNAMIC_LINK") == 0)
8238 sym->st_shndx = SHN_ABS;
8239 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8242 else if (SGI_COMPAT (output_bfd))
8244 if (strcmp (name, "_gp_disp") == 0)
8246 sym->st_shndx = SHN_ABS;
8247 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8248 sym->st_value = elf_gp (output_bfd);
8250 else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
8251 || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
8253 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8254 sym->st_other = STO_PROTECTED;
8256 sym->st_shndx = SHN_MIPS_DATA;
8258 else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
8260 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
8261 sym->st_other = STO_PROTECTED;
8262 sym->st_value = mips_elf_hash_table (info)->procedure_count;
8263 sym->st_shndx = SHN_ABS;
8265 else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
8267 if (h->type == STT_FUNC)
8268 sym->st_shndx = SHN_MIPS_TEXT;
8269 else if (h->type == STT_OBJECT)
8270 sym->st_shndx = SHN_MIPS_DATA;
8274 /* Handle the IRIX6-specific symbols. */
8275 if (IRIX_COMPAT (output_bfd) == ict_irix6)
8276 mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
8278 if (SGI_COMPAT (output_bfd)
8281 if (! mips_elf_hash_table (info)->use_rld_obj_head
8282 && strcmp (name, "__rld_map") == 0)
8284 asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
8285 BFD_ASSERT (s != NULL);
8286 sym->st_value = s->output_section->vma + s->output_offset;
8287 bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
8288 if (mips_elf_hash_table (info)->rld_value == 0)
8289 mips_elf_hash_table (info)->rld_value = sym->st_value;
8291 else if (mips_elf_hash_table (info)->use_rld_obj_head
8292 && strcmp (name, "__rld_obj_head") == 0)
8294 /* IRIX6 does not use a .rld_map section. */
8295 if (IRIX_COMPAT (output_bfd) == ict_irix5)
8296 BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
8298 mips_elf_hash_table (info)->rld_value = sym->st_value;
8302 /* If this is a mips16 symbol, force the value to be even. */
8303 if (sym->st_other == STO_MIPS16
8304 && (sym->st_value & 1) != 0)
8310 /* Finish up the dynamic sections. */
8313 _bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
8315 struct bfd_link_info *info;
8320 struct mips_got_info *g;
8322 dynobj = elf_hash_table (info)->dynobj;
8324 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8326 sgot = mips_elf_got_section (dynobj);
8331 BFD_ASSERT (elf_section_data (sgot) != NULL);
8332 g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
8333 BFD_ASSERT (g != NULL);
8336 if (elf_hash_table (info)->dynamic_sections_created)
8340 BFD_ASSERT (sdyn != NULL);
8341 BFD_ASSERT (g != NULL);
8343 for (b = sdyn->contents;
8344 b < sdyn->contents + sdyn->_raw_size;
8345 b += MIPS_ELF_DYN_SIZE (dynobj))
8347 Elf_Internal_Dyn dyn;
8353 /* Read in the current dynamic entry. */
8354 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
8356 /* Assume that we're going to modify it and write it out. */
8362 s = (bfd_get_section_by_name
8364 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
8365 BFD_ASSERT (s != NULL);
8366 dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
8370 /* Rewrite DT_STRSZ. */
8372 _bfd_stringtab_size (elf_hash_table (info)->dynstr);
8378 case DT_MIPS_CONFLICT:
8381 case DT_MIPS_LIBLIST:
8384 s = bfd_get_section_by_name (output_bfd, name);
8385 BFD_ASSERT (s != NULL);
8386 dyn.d_un.d_ptr = s->vma;
8389 case DT_MIPS_RLD_VERSION:
8390 dyn.d_un.d_val = 1; /* XXX */
8394 dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
8397 case DT_MIPS_CONFLICTNO:
8399 elemsize = sizeof (Elf32_Conflict);
8402 case DT_MIPS_LIBLISTNO:
8404 elemsize = sizeof (Elf32_Lib);
8406 s = bfd_get_section_by_name (output_bfd, name);
8409 if (s->_cooked_size != 0)
8410 dyn.d_un.d_val = s->_cooked_size / elemsize;
8412 dyn.d_un.d_val = s->_raw_size / elemsize;
8418 case DT_MIPS_TIME_STAMP:
8419 time ((time_t *) &dyn.d_un.d_val);
8422 case DT_MIPS_ICHECKSUM:
8427 case DT_MIPS_IVERSION:
8432 case DT_MIPS_BASE_ADDRESS:
8433 s = output_bfd->sections;
8434 BFD_ASSERT (s != NULL);
8435 dyn.d_un.d_ptr = s->vma & ~(0xffff);
8438 case DT_MIPS_LOCAL_GOTNO:
8439 dyn.d_un.d_val = g->local_gotno;
8442 case DT_MIPS_SYMTABNO:
8444 elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
8445 s = bfd_get_section_by_name (output_bfd, name);
8446 BFD_ASSERT (s != NULL);
8448 if (s->_cooked_size != 0)
8449 dyn.d_un.d_val = s->_cooked_size / elemsize;
8451 dyn.d_un.d_val = s->_raw_size / elemsize;
8454 case DT_MIPS_UNREFEXTNO:
8455 /* The index into the dynamic symbol table which is the
8456 entry of the first external symbol that is not
8457 referenced within the same object. */
8458 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
8461 case DT_MIPS_GOTSYM:
8462 if (g->global_gotsym != NULL)
8463 dyn.d_un.d_val = g->global_gotsym->dynindx;
8468 case DT_MIPS_HIPAGENO:
8469 dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
8472 case DT_MIPS_RLD_MAP:
8473 dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
8476 case DT_MIPS_OPTIONS:
8477 s = (bfd_get_section_by_name
8478 (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
8479 dyn.d_un.d_ptr = s->vma;
8483 s = (bfd_get_section_by_name
8484 (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
8485 dyn.d_un.d_ptr = s->vma;
8494 (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
8499 /* The first entry of the global offset table will be filled at
8500 runtime. The second entry will be used by some runtime loaders.
8501 This isn't the case of Irix rld. */
8502 if (sgot != NULL && sgot->_raw_size > 0)
8504 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
8505 MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
8506 sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
8510 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
8511 = MIPS_ELF_GOT_SIZE (output_bfd);
8516 Elf32_compact_rel cpt;
8518 /* ??? The section symbols for the output sections were set up in
8519 _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
8520 symbols. Should we do so? */
8522 smsym = bfd_get_section_by_name (dynobj,
8523 MIPS_ELF_MSYM_SECTION_NAME (dynobj));
8526 Elf32_Internal_Msym msym;
8528 msym.ms_hash_value = 0;
8529 msym.ms_info = ELF32_MS_INFO (0, 1);
8531 for (s = output_bfd->sections; s != NULL; s = s->next)
8533 long dynindx = elf_section_data (s)->dynindx;
8535 bfd_mips_elf_swap_msym_out
8537 (((Elf32_External_Msym *) smsym->contents)
8542 if (SGI_COMPAT (output_bfd))
8544 /* Write .compact_rel section out. */
8545 s = bfd_get_section_by_name (dynobj, ".compact_rel");
8549 cpt.num = s->reloc_count;
8551 cpt.offset = (s->output_section->filepos
8552 + sizeof (Elf32_External_compact_rel));
8555 bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
8556 ((Elf32_External_compact_rel *)
8559 /* Clean up a dummy stub function entry in .text. */
8560 s = bfd_get_section_by_name (dynobj,
8561 MIPS_ELF_STUB_SECTION_NAME (dynobj));
8564 file_ptr dummy_offset;
8566 BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
8567 dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
8568 memset (s->contents + dummy_offset, 0,
8569 MIPS_FUNCTION_STUB_SIZE);
8574 /* Clean up a first relocation in .rel.dyn. */
8575 s = bfd_get_section_by_name (dynobj,
8576 MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
8577 if (s != NULL && s->_raw_size > 0)
8578 memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
8584 /* This is almost identical to bfd_generic_get_... except that some
8585 MIPS relocations need to be handled specially. Sigh. */
8588 elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
8589 relocateable, symbols)
8591 struct bfd_link_info *link_info;
8592 struct bfd_link_order *link_order;
8594 boolean relocateable;
8597 /* Get enough memory to hold the stuff */
8598 bfd *input_bfd = link_order->u.indirect.section->owner;
8599 asection *input_section = link_order->u.indirect.section;
8601 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
8602 arelent **reloc_vector = NULL;
8608 reloc_vector = (arelent **) bfd_malloc (reloc_size);
8609 if (reloc_vector == NULL && reloc_size != 0)
8612 /* read in the section */
8613 if (!bfd_get_section_contents (input_bfd,
8617 input_section->_raw_size))
8620 /* We're not relaxing the section, so just copy the size info */
8621 input_section->_cooked_size = input_section->_raw_size;
8622 input_section->reloc_done = true;
8624 reloc_count = bfd_canonicalize_reloc (input_bfd,
8628 if (reloc_count < 0)
8631 if (reloc_count > 0)
8636 bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
8639 struct bfd_hash_entry *h;
8640 struct bfd_link_hash_entry *lh;
8641 /* Skip all this stuff if we aren't mixing formats. */
8642 if (abfd && input_bfd
8643 && abfd->xvec == input_bfd->xvec)
8647 h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
8648 lh = (struct bfd_link_hash_entry *) h;
8655 case bfd_link_hash_undefined:
8656 case bfd_link_hash_undefweak:
8657 case bfd_link_hash_common:
8660 case bfd_link_hash_defined:
8661 case bfd_link_hash_defweak:
8663 gp = lh->u.def.value;
8665 case bfd_link_hash_indirect:
8666 case bfd_link_hash_warning:
8668 /* @@FIXME ignoring warning for now */
8670 case bfd_link_hash_new:
8679 for (parent = reloc_vector; *parent != (arelent *) NULL;
8682 char *error_message = (char *) NULL;
8683 bfd_reloc_status_type r;
8685 /* Specific to MIPS: Deal with relocation types that require
8686 knowing the gp of the output bfd. */
8687 asymbol *sym = *(*parent)->sym_ptr_ptr;
8688 if (bfd_is_abs_section (sym->section) && abfd)
8690 /* The special_function wouldn't get called anyways. */
8694 /* The gp isn't there; let the special function code
8695 fall over on its own. */
8697 else if ((*parent)->howto->special_function
8698 == _bfd_mips_elf_gprel16_reloc)
8700 /* bypass special_function call */
8701 r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
8702 relocateable, (PTR) data, gp);
8703 goto skip_bfd_perform_relocation;
8705 /* end mips specific stuff */
8707 r = bfd_perform_relocation (input_bfd,
8711 relocateable ? abfd : (bfd *) NULL,
8713 skip_bfd_perform_relocation:
8717 asection *os = input_section->output_section;
8719 /* A partial link, so keep the relocs */
8720 os->orelocation[os->reloc_count] = *parent;
8724 if (r != bfd_reloc_ok)
8728 case bfd_reloc_undefined:
8729 if (!((*link_info->callbacks->undefined_symbol)
8730 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
8731 input_bfd, input_section, (*parent)->address)))
8734 case bfd_reloc_dangerous:
8735 BFD_ASSERT (error_message != (char *) NULL);
8736 if (!((*link_info->callbacks->reloc_dangerous)
8737 (link_info, error_message, input_bfd, input_section,
8738 (*parent)->address)))
8741 case bfd_reloc_overflow:
8742 if (!((*link_info->callbacks->reloc_overflow)
8743 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
8744 (*parent)->howto->name, (*parent)->addend,
8745 input_bfd, input_section, (*parent)->address)))
8748 case bfd_reloc_outofrange:
8757 if (reloc_vector != NULL)
8758 free (reloc_vector);
8762 if (reloc_vector != NULL)
8763 free (reloc_vector);
8766 #define bfd_elf32_bfd_get_relocated_section_contents \
8767 elf32_mips_get_relocated_section_contents
8769 /* ECOFF swapping routines. These are used when dealing with the
8770 .mdebug section, which is in the ECOFF debugging format. */
8771 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap =
8773 /* Symbol table magic number. */
8775 /* Alignment of debugging information. E.g., 4. */
8777 /* Sizes of external symbolic information. */
8778 sizeof (struct hdr_ext),
8779 sizeof (struct dnr_ext),
8780 sizeof (struct pdr_ext),
8781 sizeof (struct sym_ext),
8782 sizeof (struct opt_ext),
8783 sizeof (struct fdr_ext),
8784 sizeof (struct rfd_ext),
8785 sizeof (struct ext_ext),
8786 /* Functions to swap in external symbolic data. */
8795 _bfd_ecoff_swap_tir_in,
8796 _bfd_ecoff_swap_rndx_in,
8797 /* Functions to swap out external symbolic data. */
8806 _bfd_ecoff_swap_tir_out,
8807 _bfd_ecoff_swap_rndx_out,
8808 /* Function to read in symbolic data. */
8809 _bfd_mips_elf_read_ecoff_info
8812 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
8813 #define TARGET_LITTLE_NAME "elf32-littlemips"
8814 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
8815 #define TARGET_BIG_NAME "elf32-bigmips"
8816 #define ELF_ARCH bfd_arch_mips
8817 #define ELF_MACHINE_CODE EM_MIPS
8819 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
8820 a value of 0x1000, and we are compatible. */
8821 #define ELF_MAXPAGESIZE 0x1000
8823 #define elf_backend_collect true
8824 #define elf_backend_type_change_ok true
8825 #define elf_backend_can_gc_sections true
8826 #define elf_info_to_howto mips_info_to_howto_rela
8827 #define elf_info_to_howto_rel mips_info_to_howto_rel
8828 #define elf_backend_sym_is_global mips_elf_sym_is_global
8829 #define elf_backend_object_p _bfd_mips_elf_object_p
8830 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
8831 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
8832 #define elf_backend_section_from_bfd_section \
8833 _bfd_mips_elf_section_from_bfd_section
8834 #define elf_backend_section_processing _bfd_mips_elf_section_processing
8835 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
8836 #define elf_backend_additional_program_headers \
8837 _bfd_mips_elf_additional_program_headers
8838 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
8839 #define elf_backend_final_write_processing \
8840 _bfd_mips_elf_final_write_processing
8841 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
8842 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
8843 #define elf_backend_create_dynamic_sections \
8844 _bfd_mips_elf_create_dynamic_sections
8845 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
8846 #define elf_backend_adjust_dynamic_symbol \
8847 _bfd_mips_elf_adjust_dynamic_symbol
8848 #define elf_backend_always_size_sections \
8849 _bfd_mips_elf_always_size_sections
8850 #define elf_backend_size_dynamic_sections \
8851 _bfd_mips_elf_size_dynamic_sections
8852 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
8853 #define elf_backend_link_output_symbol_hook \
8854 _bfd_mips_elf_link_output_symbol_hook
8855 #define elf_backend_finish_dynamic_symbol \
8856 _bfd_mips_elf_finish_dynamic_symbol
8857 #define elf_backend_finish_dynamic_sections \
8858 _bfd_mips_elf_finish_dynamic_sections
8859 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
8860 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
8862 #define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO)
8863 #define elf_backend_plt_header_size 0
8865 #define bfd_elf32_bfd_is_local_label_name \
8866 mips_elf_is_local_label_name
8867 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
8868 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
8869 #define bfd_elf32_bfd_link_hash_table_create \
8870 _bfd_mips_elf_link_hash_table_create
8871 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
8872 #define bfd_elf32_bfd_copy_private_bfd_data \
8873 _bfd_mips_elf_copy_private_bfd_data
8874 #define bfd_elf32_bfd_merge_private_bfd_data \
8875 _bfd_mips_elf_merge_private_bfd_data
8876 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
8877 #define bfd_elf32_bfd_print_private_bfd_data \
8878 _bfd_mips_elf_print_private_bfd_data
8879 #include "elf32-target.h"