1 /* MIPS ELF support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
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) /* In Elf 64: alias R_MIPS_ADD */
38 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */
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) /* In Elf 64: alias R_MIPS_GPREL */
43 RELOC_NUMBER (R_MIPS_LITERAL, 8)
44 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */
45 RELOC_NUMBER (R_MIPS_PC16, 10)
46 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */
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 /* This was a GNU extension used by embedded-PIC. It was co-opted by
80 mips-linux for exception-handling data. It is no longer used, but
81 should continue to be supported by the linker for backward
82 compatibility. (GCC stopped using it in May, 2004.) */
83 RELOC_NUMBER (R_MIPS_PC32, 248)
84 /* FIXME: this relocation is used internally by gas. */
85 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
86 /* These are GNU extensions to enable C++ vtable garbage collection. */
87 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
88 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
89 END_RELOC_NUMBERS (R_MIPS_maxext)
91 /* Processor specific flags for the ELF header e_flags field. */
93 /* At least one .noreorder directive appears in the source. */
94 #define EF_MIPS_NOREORDER 0x00000001
96 /* File contains position independent code. */
97 #define EF_MIPS_PIC 0x00000002
99 /* Code in file uses the standard calling sequence for calling
100 position independent code. */
101 #define EF_MIPS_CPIC 0x00000004
103 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */
104 #define EF_MIPS_XGOT 0x00000008
106 /* Code in file uses UCODE (obsolete) */
107 #define EF_MIPS_UCODE 0x00000010
109 /* Code in file uses new ABI (-n32 on Irix 6). */
110 #define EF_MIPS_ABI2 0x00000020
112 /* Process the .MIPS.options section first by ld */
113 #define EF_MIPS_OPTIONS_FIRST 0x00000080
115 /* Architectural Extensions used by this file */
116 #define EF_MIPS_ARCH_ASE 0x0f000000
118 /* Use MDMX multimedia extensions */
119 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000
121 /* Use MIPS-16 ISA extensions */
122 #define EF_MIPS_ARCH_ASE_M16 0x04000000
124 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
125 (regs are 32-bits wide.) */
126 #define EF_MIPS_32BITMODE 0x00000100
128 /* Four bit MIPS architecture field. */
129 #define EF_MIPS_ARCH 0xf0000000
132 #define E_MIPS_ARCH_1 0x00000000
135 #define E_MIPS_ARCH_2 0x10000000
138 #define E_MIPS_ARCH_3 0x20000000
141 #define E_MIPS_ARCH_4 0x30000000
144 #define E_MIPS_ARCH_5 0x40000000
147 #define E_MIPS_ARCH_32 0x50000000
150 #define E_MIPS_ARCH_64 0x60000000
152 /* -mips32r2 code. */
153 #define E_MIPS_ARCH_32R2 0x70000000
155 /* -mips64r2 code. */
156 #define E_MIPS_ARCH_64R2 0x80000000
158 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */
159 #define EF_MIPS_ABI 0x0000F000
161 /* The original o32 abi. */
162 #define E_MIPS_ABI_O32 0x00001000
164 /* O32 extended to work on 64 bit architectures */
165 #define E_MIPS_ABI_O64 0x00002000
167 /* EABI in 32 bit mode */
168 #define E_MIPS_ABI_EABI32 0x00003000
170 /* EABI in 64 bit mode */
171 #define E_MIPS_ABI_EABI64 0x00004000
174 /* Machine variant if we know it. This field was invented at Cygnus,
175 but it is hoped that other vendors will adopt it. If some standard
176 is developed, this code should be changed to follow it. */
178 #define EF_MIPS_MACH 0x00FF0000
180 /* Cygnus is choosing values between 80 and 9F;
181 00 - 7F should be left for a future standard;
182 the rest are open. */
184 #define E_MIPS_MACH_3900 0x00810000
185 #define E_MIPS_MACH_4010 0x00820000
186 #define E_MIPS_MACH_4100 0x00830000
187 #define E_MIPS_MACH_4650 0x00850000
188 #define E_MIPS_MACH_4120 0x00870000
189 #define E_MIPS_MACH_4111 0x00880000
190 #define E_MIPS_MACH_SB1 0x008a0000
191 #define E_MIPS_MACH_5400 0x00910000
192 #define E_MIPS_MACH_5500 0x00980000
194 /* Processor specific section indices. These sections do not actually
195 exist. Symbols with a st_shndx field corresponding to one of these
196 values have a special meaning. */
198 /* Defined and allocated common symbol. Value is virtual address. If
199 relocated, alignment must be preserved. */
200 #define SHN_MIPS_ACOMMON 0xff00
202 /* Defined and allocated text symbol. Value is virtual address.
203 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
204 #define SHN_MIPS_TEXT 0xff01
206 /* Defined and allocated data symbol. Value is virtual address.
207 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
208 #define SHN_MIPS_DATA 0xff02
210 /* Small common symbol. */
211 #define SHN_MIPS_SCOMMON 0xff03
213 /* Small undefined symbol. */
214 #define SHN_MIPS_SUNDEFINED 0xff04
216 /* Processor specific section types. */
218 /* Section contains the set of dynamic shared objects used when
219 statically linking. */
220 #define SHT_MIPS_LIBLIST 0x70000000
222 /* I'm not sure what this is, but it's used on Irix 5. */
223 #define SHT_MIPS_MSYM 0x70000001
225 /* Section contains list of symbols whose definitions conflict with
226 symbols defined in shared objects. */
227 #define SHT_MIPS_CONFLICT 0x70000002
229 /* Section contains the global pointer table. */
230 #define SHT_MIPS_GPTAB 0x70000003
232 /* Section contains microcode information. The exact format is
234 #define SHT_MIPS_UCODE 0x70000004
236 /* Section contains some sort of debugging information. The exact
237 format is unspecified. It's probably ECOFF symbols. */
238 #define SHT_MIPS_DEBUG 0x70000005
240 /* Section contains register usage information. */
241 #define SHT_MIPS_REGINFO 0x70000006
244 #define SHT_MIPS_PACKAGE 0x70000007
247 #define SHT_MIPS_PACKSYM 0x70000008
250 #define SHT_MIPS_RELD 0x70000009
252 /* Section contains interface information. */
253 #define SHT_MIPS_IFACE 0x7000000b
255 /* Section contains description of contents of another section. */
256 #define SHT_MIPS_CONTENT 0x7000000c
258 /* Section contains miscellaneous options. */
259 #define SHT_MIPS_OPTIONS 0x7000000d
262 #define SHT_MIPS_SHDR 0x70000010
265 #define SHT_MIPS_FDESC 0x70000011
268 #define SHT_MIPS_EXTSYM 0x70000012
271 #define SHT_MIPS_DENSE 0x70000013
274 #define SHT_MIPS_PDESC 0x70000014
277 #define SHT_MIPS_LOCSYM 0x70000015
280 #define SHT_MIPS_AUXSYM 0x70000016
283 #define SHT_MIPS_OPTSYM 0x70000017
286 #define SHT_MIPS_LOCSTR 0x70000018
289 #define SHT_MIPS_LINE 0x70000019
292 #define SHT_MIPS_RFDESC 0x7000001a
294 /* Delta C++: symbol table */
295 #define SHT_MIPS_DELTASYM 0x7000001b
297 /* Delta C++: instance table */
298 #define SHT_MIPS_DELTAINST 0x7000001c
300 /* Delta C++: class table */
301 #define SHT_MIPS_DELTACLASS 0x7000001d
303 /* DWARF debugging section. */
304 #define SHT_MIPS_DWARF 0x7000001e
306 /* Delta C++: declarations */
307 #define SHT_MIPS_DELTADECL 0x7000001f
309 /* List of libraries the binary depends on. Includes a time stamp, version
311 #define SHT_MIPS_SYMBOL_LIB 0x70000020
313 /* Events section. */
314 #define SHT_MIPS_EVENTS 0x70000021
317 #define SHT_MIPS_TRANSLATE 0x70000022
319 /* Special pixie sections */
320 #define SHT_MIPS_PIXIE 0x70000023
322 /* Address translation table (for debug info) */
323 #define SHT_MIPS_XLATE 0x70000024
325 /* SGI internal address translation table (for debug info) */
326 #define SHT_MIPS_XLATE_DEBUG 0x70000025
328 /* Intermediate code */
329 #define SHT_MIPS_WHIRL 0x70000026
331 /* C++ exception handling region info */
332 #define SHT_MIPS_EH_REGION 0x70000027
334 /* Obsolete address translation table (for debug info) */
335 #define SHT_MIPS_XLATE_OLD 0x70000028
337 /* Runtime procedure descriptor table exception information (ucode) ??? */
338 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
341 /* A section of type SHT_MIPS_LIBLIST contains an array of the
342 following structure. The sh_link field is the section index of the
343 string table. The sh_info field is the number of entries in the
347 /* String table index for name of shared object. */
348 unsigned long l_name;
350 unsigned long l_time_stamp;
351 /* Checksum of symbol names and common sizes. */
352 unsigned long l_checksum;
353 /* String table index for version. */
354 unsigned long l_version;
356 unsigned long l_flags;
359 /* The external version of Elf32_Lib. */
362 unsigned char l_name[4];
363 unsigned char l_time_stamp[4];
364 unsigned char l_checksum[4];
365 unsigned char l_version[4];
366 unsigned char l_flags[4];
367 } Elf32_External_Lib;
369 /* The l_flags field of an Elf32_Lib structure may contain the
372 /* Require an exact match at runtime. */
373 #define LL_EXACT_MATCH 0x00000001
375 /* Ignore version incompatibilities at runtime. */
376 #define LL_IGNORE_INT_VER 0x00000002
378 /* Require matching minor version number. */
379 #define LL_REQUIRE_MINOR 0x00000004
382 #define LL_EXPORTS 0x00000008
384 /* Delay loading of this library until really needed. */
385 #define LL_DELAY_LOAD 0x00000010
387 /* ??? Delta C++ stuff ??? */
388 #define LL_DELTA 0x00000020
391 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
392 .dynsym section. Each element has the following type. */
393 typedef unsigned long Elf32_Conflict;
394 typedef unsigned char Elf32_External_Conflict[4];
396 typedef unsigned long Elf64_Conflict;
397 typedef unsigned char Elf64_External_Conflict[8];
399 /* A section of type SHT_MIPS_GPTAB contains information about how
400 much GP space would be required for different -G arguments. This
401 information is only used so that the linker can provide informative
402 suggestions as to the best -G value to use. The sh_info field is
403 the index of the section for which this information applies. The
404 contents of the section are an array of the following union. The
405 first element uses the gt_header field. The remaining elements use
406 the gt_entry field. */
411 /* -G value actually used for this object file. */
412 unsigned long gt_current_g_value;
414 unsigned long gt_unused;
418 /* If this -G argument has been used... */
419 unsigned long gt_g_value;
420 /* ...this many GP section bytes would be required. */
421 unsigned long gt_bytes;
425 /* The external version of Elf32_gptab. */
431 unsigned char gt_current_g_value[4];
432 unsigned char gt_unused[4];
436 unsigned char gt_g_value[4];
437 unsigned char gt_bytes[4];
439 } Elf32_External_gptab;
441 /* A section of type SHT_MIPS_REGINFO contains the following
445 /* Mask of general purpose registers used. */
446 unsigned long ri_gprmask;
447 /* Mask of co-processor registers used. */
448 unsigned long ri_cprmask[4];
449 /* GP register value for this object file. */
453 /* The external version of the Elf_RegInfo structure. */
456 unsigned char ri_gprmask[4];
457 unsigned char ri_cprmask[4][4];
458 unsigned char ri_gp_value[4];
459 } Elf32_External_RegInfo;
461 /* MIPS ELF .reginfo swapping routines. */
462 extern void bfd_mips_elf32_swap_reginfo_in
463 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
464 extern void bfd_mips_elf32_swap_reginfo_out
465 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
467 /* Processor specific section flags. */
469 /* This section must be in the global data area. */
470 #define SHF_MIPS_GPREL 0x10000000
472 /* This section should be merged. */
473 #define SHF_MIPS_MERGE 0x20000000
475 /* This section contains address data of size implied by section
477 #define SHF_MIPS_ADDR 0x40000000
479 /* This section contains string data. */
480 #define SHF_MIPS_STRING 0x80000000
482 /* This section may not be stripped. */
483 #define SHF_MIPS_NOSTRIP 0x08000000
485 /* This section is local to threads. */
486 #define SHF_MIPS_LOCAL 0x04000000
488 /* Linker should generate implicit weak names for this section. */
489 #define SHF_MIPS_NAMES 0x02000000
491 /* Section contais text/data which may be replicated in other sections.
492 Linker should retain only one copy. */
493 #define SHF_MIPS_NODUPES 0x01000000
495 /* Processor specific program header types. */
497 /* Register usage information. Identifies one .reginfo section. */
498 #define PT_MIPS_REGINFO 0x70000000
500 /* Runtime procedure table. */
501 #define PT_MIPS_RTPROC 0x70000001
503 /* .MIPS.options section. */
504 #define PT_MIPS_OPTIONS 0x70000002
506 /* Processor specific dynamic array tags. */
508 /* 32 bit version number for runtime linker interface. */
509 #define DT_MIPS_RLD_VERSION 0x70000001
512 #define DT_MIPS_TIME_STAMP 0x70000002
514 /* Checksum of external strings and common sizes. */
515 #define DT_MIPS_ICHECKSUM 0x70000003
517 /* Index of version string in string table. */
518 #define DT_MIPS_IVERSION 0x70000004
520 /* 32 bits of flags. */
521 #define DT_MIPS_FLAGS 0x70000005
523 /* Base address of the segment. */
524 #define DT_MIPS_BASE_ADDRESS 0x70000006
527 #define DT_MIPS_MSYM 0x70000007
529 /* Address of .conflict section. */
530 #define DT_MIPS_CONFLICT 0x70000008
532 /* Address of .liblist section. */
533 #define DT_MIPS_LIBLIST 0x70000009
535 /* Number of local global offset table entries. */
536 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
538 /* Number of entries in the .conflict section. */
539 #define DT_MIPS_CONFLICTNO 0x7000000b
541 /* Number of entries in the .liblist section. */
542 #define DT_MIPS_LIBLISTNO 0x70000010
544 /* Number of entries in the .dynsym section. */
545 #define DT_MIPS_SYMTABNO 0x70000011
547 /* Index of first external dynamic symbol not referenced locally. */
548 #define DT_MIPS_UNREFEXTNO 0x70000012
550 /* Index of first dynamic symbol in global offset table. */
551 #define DT_MIPS_GOTSYM 0x70000013
553 /* Number of page table entries in global offset table. */
554 #define DT_MIPS_HIPAGENO 0x70000014
556 /* Address of run time loader map, used for debugging. */
557 #define DT_MIPS_RLD_MAP 0x70000016
559 /* Delta C++ class definition. */
560 #define DT_MIPS_DELTA_CLASS 0x70000017
562 /* Number of entries in DT_MIPS_DELTA_CLASS. */
563 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
565 /* Delta C++ class instances. */
566 #define DT_MIPS_DELTA_INSTANCE 0x70000019
568 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
569 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
571 /* Delta relocations. */
572 #define DT_MIPS_DELTA_RELOC 0x7000001b
574 /* Number of entries in DT_MIPS_DELTA_RELOC. */
575 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
577 /* Delta symbols that Delta relocations refer to. */
578 #define DT_MIPS_DELTA_SYM 0x7000001d
580 /* Number of entries in DT_MIPS_DELTA_SYM. */
581 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
583 /* Delta symbols that hold class declarations. */
584 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
586 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
587 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
589 /* Flags indicating information about C++ flavor. */
590 #define DT_MIPS_CXX_FLAGS 0x70000022
592 /* Pixie information (???). */
593 #define DT_MIPS_PIXIE_INIT 0x70000023
595 /* Address of .MIPS.symlib */
596 #define DT_MIPS_SYMBOL_LIB 0x70000024
598 /* The GOT index of the first PTE for a segment */
599 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
601 /* The GOT index of the first PTE for a local symbol */
602 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
604 /* The GOT index of the first PTE for a hidden symbol */
605 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
607 /* The GOT index of the first PTE for a protected symbol */
608 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
610 /* Address of `.MIPS.options'. */
611 #define DT_MIPS_OPTIONS 0x70000029
613 /* Address of `.interface'. */
614 #define DT_MIPS_INTERFACE 0x7000002a
617 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
619 /* Size of the .interface section. */
620 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
622 /* Size of rld_text_resolve function stored in the GOT. */
623 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
625 /* Default suffix of DSO to be added by rld on dlopen() calls. */
626 #define DT_MIPS_PERF_SUFFIX 0x7000002e
628 /* Size of compact relocation section (O32). */
629 #define DT_MIPS_COMPACT_SIZE 0x7000002f
631 /* GP value for auxiliary GOTs. */
632 #define DT_MIPS_GP_VALUE 0x70000030
634 /* Address of auxiliary .dynamic. */
635 #define DT_MIPS_AUX_DYNAMIC 0x70000031
637 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
640 #define RHF_NONE 0x00000000
642 /* Uses shortcut pointers. */
643 #define RHF_QUICKSTART 0x00000001
645 /* Hash size is not a power of two. */
646 #define RHF_NOTPOT 0x00000002
648 /* Ignore LD_LIBRARY_PATH. */
649 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
651 /* DSO address may not be relocated. */
652 #define RHF_NO_MOVE 0x00000008
654 /* SGI specific features. */
655 #define RHF_SGI_ONLY 0x00000010
657 /* Guarantee that .init will finish executing before any non-init
658 code in DSO is called. */
659 #define RHF_GUARANTEE_INIT 0x00000020
661 /* Contains Delta C++ code. */
662 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
664 /* Guarantee that .init will start executing before any non-init
665 code in DSO is called. */
666 #define RHF_GUARANTEE_START_INIT 0x00000080
668 /* Generated by pixie. */
669 #define RHF_PIXIE 0x00000100
671 /* Delay-load DSO by default. */
672 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
674 /* Object may be requickstarted */
675 #define RHF_REQUICKSTART 0x00000400
677 /* Object has been requickstarted */
678 #define RHF_REQUICKSTARTED 0x00000800
680 /* Generated by cord. */
681 #define RHF_CORD 0x00001000
683 /* Object contains no unresolved undef symbols. */
684 #define RHF_NO_UNRES_UNDEF 0x00002000
686 /* Symbol table is in a safe order. */
687 #define RHF_RLD_ORDER_SAFE 0x00004000
689 /* Special values for the st_other field in the symbol table. These
690 are used in an Irix 5 dynamic symbol table. */
692 #define STO_DEFAULT STV_DEFAULT
693 #define STO_INTERNAL STV_INTERNAL
694 #define STO_HIDDEN STV_HIDDEN
695 #define STO_PROTECTED STV_PROTECTED
697 /* This value is used for a mips16 .text symbol. */
698 #define STO_MIPS16 0xf0
700 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
701 relocation entry specifies up to three actual relocations, all at
702 the same address. The first relocation which required a symbol
703 uses the symbol in the r_sym field. The second relocation which
704 requires a symbol uses the symbol in the r_ssym field. If all
705 three relocations require a symbol, the third one uses a zero
708 /* An entry in a 64 bit SHT_REL section. */
712 /* Address of relocation. */
713 unsigned char r_offset[8];
715 unsigned char r_sym[4];
716 /* Special symbol. */
717 unsigned char r_ssym[1];
718 /* Third relocation. */
719 unsigned char r_type3[1];
720 /* Second relocation. */
721 unsigned char r_type2[1];
722 /* First relocation. */
723 unsigned char r_type[1];
724 } Elf64_Mips_External_Rel;
728 /* Address of relocation. */
732 /* Special symbol. */
733 unsigned char r_ssym;
734 /* Third relocation. */
735 unsigned char r_type3;
736 /* Second relocation. */
737 unsigned char r_type2;
738 /* First relocation. */
739 unsigned char r_type;
740 } Elf64_Mips_Internal_Rel;
742 /* An entry in a 64 bit SHT_RELA section. */
746 /* Address of relocation. */
747 unsigned char r_offset[8];
749 unsigned char r_sym[4];
750 /* Special symbol. */
751 unsigned char r_ssym[1];
752 /* Third relocation. */
753 unsigned char r_type3[1];
754 /* Second relocation. */
755 unsigned char r_type2[1];
756 /* First relocation. */
757 unsigned char r_type[1];
759 unsigned char r_addend[8];
760 } Elf64_Mips_External_Rela;
764 /* Address of relocation. */
768 /* Special symbol. */
769 unsigned char r_ssym;
770 /* Third relocation. */
771 unsigned char r_type3;
772 /* Second relocation. */
773 unsigned char r_type2;
774 /* First relocation. */
775 unsigned char r_type;
777 bfd_signed_vma r_addend;
778 } Elf64_Mips_Internal_Rela;
780 /* MIPS ELF 64 relocation info access macros. */
781 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
782 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
783 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
784 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
786 /* Values found in the r_ssym field of a relocation entry. */
794 /* Value of GP in object being relocated. */
797 /* Address of location being relocated. */
800 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
801 which starts with this header. */
805 /* Type of option. */
806 unsigned char kind[1];
807 /* Size of option descriptor, including header. */
808 unsigned char size[1];
809 /* Section index of affected section, or 0 for global option. */
810 unsigned char section[2];
811 /* Information specific to this kind of option. */
812 unsigned char info[4];
813 } Elf_External_Options;
817 /* Type of option. */
819 /* Size of option descriptor, including header. */
821 /* Section index of affected section, or 0 for global option. */
822 unsigned short section;
823 /* Information specific to this kind of option. */
825 } Elf_Internal_Options;
827 /* MIPS ELF option header swapping routines. */
828 extern void bfd_mips_elf_swap_options_in
829 (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
830 extern void bfd_mips_elf_swap_options_out
831 (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
833 /* Values which may appear in the kind field of an Elf_Options
839 /* Register usage and GP value. */
840 #define ODK_REGINFO 1
842 /* Exception processing information. */
843 #define ODK_EXCEPTIONS 2
845 /* Section padding information. */
848 /* Hardware workarounds performed. */
849 #define ODK_HWPATCH 4
851 /* Fill value used by the linker. */
854 /* Reserved space for desktop tools. */
857 /* Hardware workarounds, AND bits when merging. */
860 /* Hardware workarounds, OR bits when merging. */
863 /* GP group to use for text/data sections. */
864 #define ODK_GP_GROUP 9
866 /* ID information. */
869 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
870 structure. In the 64 bit ABI, it is the following structure. The
871 info field of the options header is not used. */
875 /* Mask of general purpose registers used. */
876 unsigned char ri_gprmask[4];
878 unsigned char ri_pad[4];
879 /* Mask of co-processor registers used. */
880 unsigned char ri_cprmask[4][4];
881 /* GP register value for this object file. */
882 unsigned char ri_gp_value[8];
883 } Elf64_External_RegInfo;
887 /* Mask of general purpose registers used. */
888 unsigned long ri_gprmask;
890 unsigned long ri_pad;
891 /* Mask of co-processor registers used. */
892 unsigned long ri_cprmask[4];
893 /* GP register value for this object file. */
895 } Elf64_Internal_RegInfo;
899 /* The hash value computed from the name of the corresponding
901 unsigned char ms_hash_value[4];
902 /* Contains both the dynamic relocation index and the symbol flags
903 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
904 to access the individual values. The dynamic relocation index
905 identifies the first entry in the .rel.dyn section that
906 references the dynamic symbol corresponding to this msym entry.
907 If the index is 0, no dynamic relocations are associated with the
908 symbol. The symbol flags field is reserved for future use. */
909 unsigned char ms_info[4];
910 } Elf32_External_Msym;
914 /* The hash value computed from the name of the corresponding
916 unsigned long ms_hash_value;
917 /* Contains both the dynamic relocation index and the symbol flags
918 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
919 to access the individual values. The dynamic relocation index
920 identifies the first entry in the .rel.dyn section that
921 references the dynamic symbol corresponding to this msym entry.
922 If the index is 0, no dynamic relocations are associated with the
923 symbol. The symbol flags field is reserved for future use. */
924 unsigned long ms_info;
925 } Elf32_Internal_Msym;
927 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
928 #define ELF32_MS_FLAGS(i) (i) & 0xff)
929 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
931 /* MIPS ELF reginfo swapping routines. */
932 extern void bfd_mips_elf64_swap_reginfo_in
933 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
934 extern void bfd_mips_elf64_swap_reginfo_out
935 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
937 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
938 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
939 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
940 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
941 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
942 #define OEX_FPDBUG 0x40000 /* Force precise floating-point
943 exceptions (debug mode). */
944 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
946 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
947 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
948 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
949 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
950 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
951 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
953 /* Masks for the info word of an ODK_PAD descriptor. */
954 #define OPAD_PREFIX 0x01
955 #define OPAD_POSTFIX 0x02
956 #define OPAD_SYMBOL 0x04
958 /* Masks for the info word of an ODK_HWPATCH descriptor. */
959 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */
960 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */
961 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */
962 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug
964 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned
967 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
968 #define OGP_GROUP 0x0000ffff /* GP group number. */
969 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
971 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
972 #define OHWA0_R4KEOP_CHECKED 0x00000001
973 #define OHWA0_R4KEOP_CLEAN 0x00000002
976 #endif /* _ELF_MIPS_H */