1 /* MIPS ELF support for BFD.
2 Copyright (C) 1993, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
6 information in the System V Application Binary Interface, MIPS
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 holds definitions specific to the MIPS ELF ABI. Note
26 that most of this is not actually implemented by BFD. */
31 #include "elf/reloc-macros.h"
33 /* Relocation types. */
34 START_RELOC_NUMBERS (elf_mips_reloc_type
)
35 RELOC_NUMBER (R_MIPS_NONE
, 0)
36 RELOC_NUMBER (R_MIPS_16
, 1)
37 RELOC_NUMBER (R_MIPS_32
, 2)
38 RELOC_NUMBER (R_MIPS_REL32
, 3)
39 RELOC_NUMBER (R_MIPS_26
, 4)
40 RELOC_NUMBER (R_MIPS_HI16
, 5)
41 RELOC_NUMBER (R_MIPS_LO16
, 6)
42 RELOC_NUMBER (R_MIPS_GPREL16
, 7)
43 RELOC_NUMBER (R_MIPS_LITERAL
, 8)
44 RELOC_NUMBER (R_MIPS_GOT16
, 9)
45 RELOC_NUMBER (R_MIPS_PC16
, 10)
46 RELOC_NUMBER (R_MIPS_CALL16
, 11)
47 RELOC_NUMBER (R_MIPS_GPREL32
, 12)
48 /* The remaining relocs are defined on Irix, although they are not
49 in the MIPS ELF ABI. */
50 RELOC_NUMBER (R_MIPS_UNUSED1
, 13)
51 RELOC_NUMBER (R_MIPS_UNUSED2
, 14)
52 RELOC_NUMBER (R_MIPS_UNUSED3
, 15)
53 RELOC_NUMBER (R_MIPS_SHIFT5
, 16)
54 RELOC_NUMBER (R_MIPS_SHIFT6
, 17)
55 RELOC_NUMBER (R_MIPS_64
, 18)
56 RELOC_NUMBER (R_MIPS_GOT_DISP
, 19)
57 RELOC_NUMBER (R_MIPS_GOT_PAGE
, 20)
58 RELOC_NUMBER (R_MIPS_GOT_OFST
, 21)
59 RELOC_NUMBER (R_MIPS_GOT_HI16
, 22)
60 RELOC_NUMBER (R_MIPS_GOT_LO16
, 23)
61 RELOC_NUMBER (R_MIPS_SUB
, 24)
62 RELOC_NUMBER (R_MIPS_INSERT_A
, 25)
63 RELOC_NUMBER (R_MIPS_INSERT_B
, 26)
64 RELOC_NUMBER (R_MIPS_DELETE
, 27)
65 RELOC_NUMBER (R_MIPS_HIGHER
, 28)
66 RELOC_NUMBER (R_MIPS_HIGHEST
, 29)
67 RELOC_NUMBER (R_MIPS_CALL_HI16
, 30)
68 RELOC_NUMBER (R_MIPS_CALL_LO16
, 31)
69 RELOC_NUMBER (R_MIPS_SCN_DISP
, 32)
70 RELOC_NUMBER (R_MIPS_REL16
, 33)
71 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE
, 34)
72 RELOC_NUMBER (R_MIPS_PJUMP
, 35)
73 RELOC_NUMBER (R_MIPS_RELGOT
, 36)
74 RELOC_NUMBER (R_MIPS_JALR
, 37)
75 RELOC_NUMBER (R_MIPS_max
, 38)
76 /* These relocs are used for the mips16. */
77 RELOC_NUMBER (R_MIPS16_26
, 100)
78 RELOC_NUMBER (R_MIPS16_GPREL
, 101)
79 /* These are GNU extensions to handle embedded-pic. */
80 RELOC_NUMBER (R_MIPS_PC32
, 248)
81 RELOC_NUMBER (R_MIPS_PC64
, 249)
82 RELOC_NUMBER (R_MIPS_GNU_REL16_S2
, 250)
83 RELOC_NUMBER (R_MIPS_GNU_REL_LO16
, 251)
84 RELOC_NUMBER (R_MIPS_GNU_REL_HI16
, 252)
85 /* These are GNU extensions to enable C++ vtable garbage collection. */
86 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT
, 253)
87 RELOC_NUMBER (R_MIPS_GNU_VTENTRY
, 254)
88 END_RELOC_NUMBERS (R_MIPS_maxext
)
90 /* Processor specific flags for the ELF header e_flags field. */
92 /* At least one .noreorder directive appears in the source. */
93 #define EF_MIPS_NOREORDER 0x00000001
95 /* File contains position independent code. */
96 #define EF_MIPS_PIC 0x00000002
98 /* Code in file uses the standard calling sequence for calling
99 position independent code. */
100 #define EF_MIPS_CPIC 0x00000004
102 /* Code in file uses new ABI (-n32 on Irix 6). */
103 #define EF_MIPS_ABI2 0x00000020
105 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
106 (regs are 32-bits wide.) */
107 #define EF_MIPS_32BITMODE 0x00000100
109 /* Four bit MIPS architecture field. */
110 #define EF_MIPS_ARCH 0xf0000000
113 #define E_MIPS_ARCH_1 0x00000000
116 #define E_MIPS_ARCH_2 0x10000000
119 #define E_MIPS_ARCH_3 0x20000000
122 #define E_MIPS_ARCH_4 0x30000000
125 #define E_MIPS_ARCH_5 0x40000000
128 #define E_MIPS_ARCH_32 0x50000000
131 #define E_MIPS_ARCH_64 0x60000000
133 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */
134 #define EF_MIPS_ABI 0x0000F000
136 /* The original o32 abi. */
137 #define E_MIPS_ABI_O32 0x00001000
139 /* O32 extended to work on 64 bit architectures */
140 #define E_MIPS_ABI_O64 0x00002000
142 /* EABI in 32 bit mode */
143 #define E_MIPS_ABI_EABI32 0x00003000
145 /* EABI in 64 bit mode */
146 #define E_MIPS_ABI_EABI64 0x00004000
149 /* Machine variant if we know it. This field was invented at Cygnus,
150 but it is hoped that other vendors will adopt it. If some standard
151 is developed, this code should be changed to follow it. */
153 #define EF_MIPS_MACH 0x00FF0000
155 /* Cygnus is choosing values between 80 and 9F;
156 00 - 7F should be left for a future standard;
157 the rest are open. */
159 #define E_MIPS_MACH_3900 0x00810000
161 #define E_MIPS_MACH_4010 0x00820000
162 #define E_MIPS_MACH_4100 0x00830000
163 #define E_MIPS_MACH_4650 0x00850000
164 #define E_MIPS_MACH_4111 0x00880000
165 #define E_MIPS_MACH_MIPS32_4K 0x00890000
167 /* Processor specific section indices. These sections do not actually
168 exist. Symbols with a st_shndx field corresponding to one of these
169 values have a special meaning. */
171 /* Defined and allocated common symbol. Value is virtual address. If
172 relocated, alignment must be preserved. */
173 #define SHN_MIPS_ACOMMON 0xff00
175 /* Defined and allocated text symbol. Value is virtual address.
176 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
177 #define SHN_MIPS_TEXT 0xff01
179 /* Defined and allocated data symbol. Value is virtual address.
180 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
181 #define SHN_MIPS_DATA 0xff02
183 /* Small common symbol. */
184 #define SHN_MIPS_SCOMMON 0xff03
186 /* Small undefined symbol. */
187 #define SHN_MIPS_SUNDEFINED 0xff04
189 /* Processor specific section types. */
191 /* Section contains the set of dynamic shared objects used when
192 statically linking. */
193 #define SHT_MIPS_LIBLIST 0x70000000
195 /* I'm not sure what this is, but it's used on Irix 5. */
196 #define SHT_MIPS_MSYM 0x70000001
198 /* Section contains list of symbols whose definitions conflict with
199 symbols defined in shared objects. */
200 #define SHT_MIPS_CONFLICT 0x70000002
202 /* Section contains the global pointer table. */
203 #define SHT_MIPS_GPTAB 0x70000003
205 /* Section contains microcode information. The exact format is
207 #define SHT_MIPS_UCODE 0x70000004
209 /* Section contains some sort of debugging information. The exact
210 format is unspecified. It's probably ECOFF symbols. */
211 #define SHT_MIPS_DEBUG 0x70000005
213 /* Section contains register usage information. */
214 #define SHT_MIPS_REGINFO 0x70000006
217 #define SHT_MIPS_PACKAGE 0x70000007
220 #define SHT_MIPS_PACKSYM 0x70000008
223 #define SHT_MIPS_RELD 0x70000009
225 /* Section contains interface information. */
226 #define SHT_MIPS_IFACE 0x7000000b
228 /* Section contains description of contents of another section. */
229 #define SHT_MIPS_CONTENT 0x7000000c
231 /* Section contains miscellaneous options. */
232 #define SHT_MIPS_OPTIONS 0x7000000d
235 #define SHT_MIPS_SHDR 0x70000010
238 #define SHT_MIPS_FDESC 0x70000011
241 #define SHT_MIPS_EXTSYM 0x70000012
244 #define SHT_MIPS_DENSE 0x70000013
247 #define SHT_MIPS_PDESC 0x70000014
250 #define SHT_MIPS_LOCSYM 0x70000015
253 #define SHT_MIPS_AUXSYM 0x70000016
256 #define SHT_MIPS_OPTSYM 0x70000017
259 #define SHT_MIPS_LOCSTR 0x70000018
262 #define SHT_MIPS_LINE 0x70000019
265 #define SHT_MIPS_RFDESC 0x7000001a
268 #define SHT_MIPS_DELTASYM 0x7000001b
271 #define SHT_MIPS_DELTAINST 0x7000001c
274 #define SHT_MIPS_DELTACLASS 0x7000001d
276 /* DWARF debugging section. */
277 #define SHT_MIPS_DWARF 0x7000001e
280 #define SHT_MIPS_DELTADECL 0x7000001f
282 /* List of libraries the binary depends on. Includes a time stamp, version
284 #define SHT_MIPS_SYMBOL_LIB 0x70000020
286 /* Events section. */
287 #define SHT_MIPS_EVENTS 0x70000021
290 #define SHT_MIPS_TRANSLATE 0x70000022
293 #define SHT_MIPS_PIXIE 0x70000023
296 #define SHT_MIPS_XLATE 0x70000024
299 #define SHT_MIPS_XLATE_DEBUG 0x70000025
302 #define SHT_MIPS_WHIRL 0x70000026
305 #define SHT_MIPS_EH_REGION 0x70000027
308 #define SHT_MIPS_XLATE_OLD 0x70000028
311 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
314 /* A section of type SHT_MIPS_LIBLIST contains an array of the
315 following structure. The sh_link field is the section index of the
316 string table. The sh_info field is the number of entries in the
320 /* String table index for name of shared object. */
321 unsigned long l_name
;
323 unsigned long l_time_stamp
;
324 /* Checksum of symbol names and common sizes. */
325 unsigned long l_checksum
;
326 /* String table index for version. */
327 unsigned long l_version
;
329 unsigned long l_flags
;
332 /* The external version of Elf32_Lib. */
335 unsigned char l_name
[4];
336 unsigned char l_time_stamp
[4];
337 unsigned char l_checksum
[4];
338 unsigned char l_version
[4];
339 unsigned char l_flags
[4];
340 } Elf32_External_Lib
;
342 /* The l_flags field of an Elf32_Lib structure may contain the
345 /* Require an exact match at runtime. */
346 #define LL_EXACT_MATCH 0x00000001
348 /* Ignore version incompatibilities at runtime. */
349 #define LL_IGNORE_INT_VER 0x00000002
351 /* Require matching minor version number. */
352 #define LL_REQUIRE_MINOR 0x00000004
355 #define LL_EXPORTS 0x00000008
357 /* Delay loading of this library until really needed. */
358 #define LL_DELAY_LOAD 0x00000010
360 /* ??? Delta C++ stuff ??? */
361 #define LL_DELTA 0x00000020
364 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
365 .dynsym section. Each element has the following type. */
366 typedef unsigned long Elf32_Conflict
;
367 typedef unsigned char Elf32_External_Conflict
[4];
369 typedef unsigned long Elf64_Conflict
;
370 typedef unsigned char Elf64_External_Conflict
[8];
372 /* A section of type SHT_MIPS_GPTAB contains information about how
373 much GP space would be required for different -G arguments. This
374 information is only used so that the linker can provide informative
375 suggestions as to the best -G value to use. The sh_info field is
376 the index of the section for which this information applies. The
377 contents of the section are an array of the following union. The
378 first element uses the gt_header field. The remaining elements use
379 the gt_entry field. */
384 /* -G value actually used for this object file. */
385 unsigned long gt_current_g_value
;
387 unsigned long gt_unused
;
391 /* If this -G argument has been used... */
392 unsigned long gt_g_value
;
393 /* ...this many GP section bytes would be required. */
394 unsigned long gt_bytes
;
398 /* The external version of Elf32_gptab. */
404 unsigned char gt_current_g_value
[4];
405 unsigned char gt_unused
[4];
409 unsigned char gt_g_value
[4];
410 unsigned char gt_bytes
[4];
412 } Elf32_External_gptab
;
414 /* A section of type SHT_MIPS_REGINFO contains the following
418 /* Mask of general purpose registers used. */
419 unsigned long ri_gprmask
;
420 /* Mask of co-processor registers used. */
421 unsigned long ri_cprmask
[4];
422 /* GP register value for this object file. */
426 /* The external version of the Elf_RegInfo structure. */
429 unsigned char ri_gprmask
[4];
430 unsigned char ri_cprmask
[4][4];
431 unsigned char ri_gp_value
[4];
432 } Elf32_External_RegInfo
;
434 /* MIPS ELF .reginfo swapping routines. */
435 extern void bfd_mips_elf32_swap_reginfo_in
436 PARAMS ((bfd
*, const Elf32_External_RegInfo
*, Elf32_RegInfo
*));
437 extern void bfd_mips_elf32_swap_reginfo_out
438 PARAMS ((bfd
*, const Elf32_RegInfo
*, Elf32_External_RegInfo
*));
440 /* Processor specific section flags. */
442 /* This section must be in the global data area. */
443 #define SHF_MIPS_GPREL 0x10000000
445 /* This section should be merged. */
446 #define SHF_MIPS_MERGE 0x20000000
448 /* This section contains 32 bit addresses. */
449 #define SHF_MIPS_ADDR32 0x40000000
451 /* This section contains 64 bit addresses. */
452 #define SHF_MIPS_ADDR64 0x80000000
454 /* This section may not be stripped. */
455 #define SHF_MIPS_NOSTRIP 0x08000000
457 /* This section is local to threads. */
458 #define SHF_MIPS_LOCAL 0x04000000
460 /* Linker should generate implicit weak names for this section. */
461 #define SHF_MIPS_NAMES 0x02000000
463 /* Processor specific program header types. */
465 /* Register usage information. Identifies one .reginfo section. */
466 #define PT_MIPS_REGINFO 0x70000000
468 /* Runtime procedure table. */
469 #define PT_MIPS_RTPROC 0x70000001
471 /* Options (for what ???). */
472 #define PT_MIPS_OPTIONS 0x70000002
474 /* Processor specific dynamic array tags. */
476 /* 32 bit version number for runtime linker interface. */
477 #define DT_MIPS_RLD_VERSION 0x70000001
480 #define DT_MIPS_TIME_STAMP 0x70000002
482 /* Checksum of external strings and common sizes. */
483 #define DT_MIPS_ICHECKSUM 0x70000003
485 /* Index of version string in string table. */
486 #define DT_MIPS_IVERSION 0x70000004
488 /* 32 bits of flags. */
489 #define DT_MIPS_FLAGS 0x70000005
491 /* Base address of the segment. */
492 #define DT_MIPS_BASE_ADDRESS 0x70000006
495 #define DT_MIPS_MSYM 0x70000007
497 /* Address of .conflict section. */
498 #define DT_MIPS_CONFLICT 0x70000008
500 /* Address of .liblist section. */
501 #define DT_MIPS_LIBLIST 0x70000009
503 /* Number of local global offset table entries. */
504 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
506 /* Number of entries in the .conflict section. */
507 #define DT_MIPS_CONFLICTNO 0x7000000b
509 /* Number of entries in the .liblist section. */
510 #define DT_MIPS_LIBLISTNO 0x70000010
512 /* Number of entries in the .dynsym section. */
513 #define DT_MIPS_SYMTABNO 0x70000011
515 /* Index of first external dynamic symbol not referenced locally. */
516 #define DT_MIPS_UNREFEXTNO 0x70000012
518 /* Index of first dynamic symbol in global offset table. */
519 #define DT_MIPS_GOTSYM 0x70000013
521 /* Number of page table entries in global offset table. */
522 #define DT_MIPS_HIPAGENO 0x70000014
524 /* Address of run time loader map, used for debugging. */
525 #define DT_MIPS_RLD_MAP 0x70000016
527 /* Delta C++ class definition. */
528 #define DT_MIPS_DELTA_CLASS 0x70000017
530 /* Number of entries in DT_MIPS_DELTA_CLASS. */
531 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
533 /* Delta C++ class instances. */
534 #define DT_MIPS_DELTA_INSTANCE 0x70000019
536 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
537 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
539 /* Delta relocations. */
540 #define DT_MIPS_DELTA_RELOC 0x7000001b
542 /* Number of entries in DT_MIPS_DELTA_RELOC. */
543 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
545 /* Delta symbols that Delta relocations refer to. */
546 #define DT_MIPS_DELTA_SYM 0x7000001d
548 /* Number of entries in DT_MIPS_DELTA_SYM. */
549 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
551 /* Delta symbols that hold class declarations. */
552 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
554 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
555 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
557 /* Flags indicating information about C++ flavor. */
558 #define DT_MIPS_CXX_FLAGS 0x70000022
560 /* Pixie information (???). */
561 #define DT_MIPS_PIXIE_INIT 0x70000023
564 #define DT_MIPS_SYMBOL_LIB 0x70000024
567 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
570 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
573 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
576 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
578 /* Address of `.MIPS.options'. */
579 #define DT_MIPS_OPTIONS 0x70000029
581 /* Address of `.interface'. */
582 #define DT_MIPS_INTERFACE 0x7000002a
585 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
587 /* Size of the .interface section. */
588 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
590 /* Size of rld_text_resolve function stored in the GOT. */
591 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
593 /* Default suffix of DSO to be added by rld on dlopen() calls. */
594 #define DT_MIPS_PERF_SUFFIX 0x7000002e
596 /* Size of compact relocation section (O32). */
597 #define DT_MIPS_COMPACT_SIZE 0x7000002f
599 /* GP value for auxiliary GOTs. */
600 #define DT_MIPS_GP_VALUE 0x70000030
602 /* Address of auxiliary .dynamic. */
603 #define DT_MIPS_AUX_DYNAMIC 0x70000031
605 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
608 #define RHF_NONE 0x00000000
610 /* Uses shortcut pointers. */
611 #define RHF_QUICKSTART 0x00000001
613 /* Hash size is not a power of two. */
614 #define RHF_NOTPOT 0x00000002
616 /* Ignore LD_LIBRARY_PATH. */
617 #define RHS_NO_LIBRARY_REPLACEMENT \
620 #define RHF_NO_MOVE 0x00000008
621 #define RHF_SGI_ONLY 0x00000010
622 #define RHF_GUARANTEE_INIT 0x00000020
623 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
624 #define RHF_GUARANTEE_START_INIT 0x00000080
625 #define RHF_PIXIE 0x00000100
626 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
627 #define RHF_REQUICKSTART 0x00000400
628 #define RHF_REQUICKSTARTED 0x00000800
629 #define RHF_CORD 0x00001000
630 #define RHF_NO_UNRES_UNDEF 0x00002000
631 #define RHF_RLD_ORDER_SAFE 0x00004000
633 /* Special values for the st_other field in the symbol table. These
634 are used in an Irix 5 dynamic symbol table. */
636 #define STO_DEFAULT STV_DEFAULT
637 #define STO_INTERNAL STV_INTERNAL
638 #define STO_HIDDEN STV_HIDDEN
639 #define STO_PROTECTED STV_PROTECTED
641 /* This value is used for a mips16 .text symbol. */
642 #define STO_MIPS16 0xf0
644 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
645 relocation entry specifies up to three actual relocations, all at
646 the same address. The first relocation which required a symbol
647 uses the symbol in the r_sym field. The second relocation which
648 requires a symbol uses the symbol in the r_ssym field. If all
649 three relocations require a symbol, the third one uses a zero
652 /* An entry in a 64 bit SHT_REL section. */
656 /* Address of relocation. */
657 unsigned char r_offset
[8];
659 unsigned char r_sym
[4];
660 /* Special symbol. */
661 unsigned char r_ssym
[1];
662 /* Third relocation. */
663 unsigned char r_type3
[1];
664 /* Second relocation. */
665 unsigned char r_type2
[1];
666 /* First relocation. */
667 unsigned char r_type
[1];
668 } Elf64_Mips_External_Rel
;
672 /* Address of relocation. */
676 /* Special symbol. */
677 unsigned char r_ssym
;
678 /* Third relocation. */
679 unsigned char r_type3
;
680 /* Second relocation. */
681 unsigned char r_type2
;
682 /* First relocation. */
683 unsigned char r_type
;
684 } Elf64_Mips_Internal_Rel
;
686 /* An entry in a 64 bit SHT_RELA section. */
690 /* Address of relocation. */
691 unsigned char r_offset
[8];
693 unsigned char r_sym
[4];
694 /* Special symbol. */
695 unsigned char r_ssym
[1];
696 /* Third relocation. */
697 unsigned char r_type3
[1];
698 /* Second relocation. */
699 unsigned char r_type2
[1];
700 /* First relocation. */
701 unsigned char r_type
[1];
703 unsigned char r_addend
[8];
704 } Elf64_Mips_External_Rela
;
708 /* Address of relocation. */
712 /* Special symbol. */
713 unsigned char r_ssym
;
714 /* Third relocation. */
715 unsigned char r_type3
;
716 /* Second relocation. */
717 unsigned char r_type2
;
718 /* First relocation. */
719 unsigned char r_type
;
721 bfd_signed_vma r_addend
;
722 } Elf64_Mips_Internal_Rela
;
724 /* Values found in the r_ssym field of a relocation entry. */
732 /* Value of GP in object being relocated. */
735 /* Address of location being relocated. */
738 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
739 which starts with this header. */
743 /* Type of option. */
744 unsigned char kind
[1];
745 /* Size of option descriptor, including header. */
746 unsigned char size
[1];
747 /* Section index of affected section, or 0 for global option. */
748 unsigned char section
[2];
749 /* Information specific to this kind of option. */
750 unsigned char info
[4];
751 } Elf_External_Options
;
755 /* Type of option. */
757 /* Size of option descriptor, including header. */
759 /* Section index of affected section, or 0 for global option. */
760 unsigned short section
;
761 /* Information specific to this kind of option. */
763 } Elf_Internal_Options
;
765 /* MIPS ELF option header swapping routines. */
766 extern void bfd_mips_elf_swap_options_in
767 PARAMS ((bfd
*, const Elf_External_Options
*, Elf_Internal_Options
*));
768 extern void bfd_mips_elf_swap_options_out
769 PARAMS ((bfd
*, const Elf_Internal_Options
*, Elf_External_Options
*));
771 /* Values which may appear in the kind field of an Elf_Options
777 /* Register usage and GP value. */
778 #define ODK_REGINFO 1
780 /* Exception processing information. */
781 #define ODK_EXCEPTIONS 2
783 /* Section padding information. */
786 /* Hardware workarounds performed. */
787 #define ODK_HWPATCH 4
789 /* Fill value used by the linker. */
792 /* Reserved space for desktop tools. */
795 /* Hardware workarounds, AND bits when merging. */
798 /* Hardware workarounds, OR bits when merging. */
801 /* GP group to use for text/data sections. */
802 #define ODK_GP_GROUP 9
804 /* ID information. */
807 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
808 structure. In the 64 bit ABI, it is the following structure. The
809 info field of the options header is not used. */
813 /* Mask of general purpose registers used. */
814 unsigned char ri_gprmask
[4];
816 unsigned char ri_pad
[4];
817 /* Mask of co-processor registers used. */
818 unsigned char ri_cprmask
[4][4];
819 /* GP register value for this object file. */
820 unsigned char ri_gp_value
[8];
821 } Elf64_External_RegInfo
;
825 /* Mask of general purpose registers used. */
826 unsigned long ri_gprmask
;
828 unsigned long ri_pad
;
829 /* Mask of co-processor registers used. */
830 unsigned long ri_cprmask
[4];
831 /* GP register value for this object file. */
833 } Elf64_Internal_RegInfo
;
837 /* The hash value computed from the name of the corresponding
839 unsigned char ms_hash_value
[4];
840 /* Contains both the dynamic relocation index and the symbol flags
841 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
842 to access the individual values. The dynamic relocation index
843 identifies the first entry in the .rel.dyn section that
844 references the dynamic symbol corresponding to this msym entry.
845 If the index is 0, no dynamic relocations are associated with the
846 symbol. The symbol flags field is reserved for future use. */
847 unsigned char ms_info
[4];
848 } Elf32_External_Msym
;
852 /* The hash value computed from the name of the corresponding
854 unsigned long ms_hash_value
;
855 /* Contains both the dynamic relocation index and the symbol flags
856 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
857 to access the individual values. The dynamic relocation index
858 identifies the first entry in the .rel.dyn section that
859 references the dynamic symbol corresponding to this msym entry.
860 If the index is 0, no dynamic relocations are associated with the
861 symbol. The symbol flags field is reserved for future use. */
862 unsigned long ms_info
;
863 } Elf32_Internal_Msym
;
865 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
866 #define ELF32_MS_FLAGS(i) (i) & 0xff)
867 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
869 /* MIPS ELF reginfo swapping routines. */
870 extern void bfd_mips_elf64_swap_reginfo_in
871 PARAMS ((bfd
*, const Elf64_External_RegInfo
*, Elf64_Internal_RegInfo
*));
872 extern void bfd_mips_elf64_swap_reginfo_out
873 PARAMS ((bfd
*, const Elf64_Internal_RegInfo
*, Elf64_External_RegInfo
*));
875 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
876 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
877 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
878 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
879 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
880 #define OEX_FPDBUG 0x40000 /* Force floating-point debug mode. */
881 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
883 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
884 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
885 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
886 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
887 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
888 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
890 /* Masks for the info word of an ODK_PAD descriptor. */
891 #define OPAD_PREFIX 0x01
892 #define OPAD_POSTFIX 0x02
893 #define OPAD_SYMBOL 0x04
895 /* Masks for the info word of an ODK_HWPATCH descriptor. */
896 #define OHW_R4KEOP 0x01 /* R4000 end-of-page patch. */
897 #define OHW_R8KPFETCH 0x02 /* May need R8000 prefetch patch. */
898 #define OHW_R5KEOP 0x04 /* R5000 end-of-page patch. */
899 #define OHW_R5KCVTL 0x08 /* R5000 cvt.[ds].l bug (clean == 1). */
901 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
902 #define OGP_GROUP 0x0000ffff /* GP group number. */
903 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
905 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
906 #define OHWA0_R4KEOP_CHECKED 0x00000001
907 #define OHWA0_R4KEOP_CLEAN 0x00000002
910 #endif /* _ELF_MIPS_H */