1 /* MIPS ELF support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 Free Software Foundation, Inc.
6 By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
7 information in the System V Application Binary Interface, MIPS
10 This file is part of BFD, the Binary File Descriptor library.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 /* This file holds definitions specific to the MIPS ELF ABI. Note
27 that most of this is not actually implemented by BFD. */
32 #include "elf/reloc-macros.h"
34 /* Relocation types. */
35 START_RELOC_NUMBERS (elf_mips_reloc_type)
36 RELOC_NUMBER (R_MIPS_NONE, 0)
37 RELOC_NUMBER (R_MIPS_16, 1)
38 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */
39 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */
40 RELOC_NUMBER (R_MIPS_26, 4)
41 RELOC_NUMBER (R_MIPS_HI16, 5)
42 RELOC_NUMBER (R_MIPS_LO16, 6)
43 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */
44 RELOC_NUMBER (R_MIPS_LITERAL, 8)
45 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */
46 RELOC_NUMBER (R_MIPS_PC16, 10)
47 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */
48 RELOC_NUMBER (R_MIPS_GPREL32, 12)
49 /* The remaining relocs are defined on Irix, although they are not
50 in the MIPS ELF ABI. */
51 RELOC_NUMBER (R_MIPS_UNUSED1, 13)
52 RELOC_NUMBER (R_MIPS_UNUSED2, 14)
53 RELOC_NUMBER (R_MIPS_UNUSED3, 15)
54 RELOC_NUMBER (R_MIPS_SHIFT5, 16)
55 RELOC_NUMBER (R_MIPS_SHIFT6, 17)
56 RELOC_NUMBER (R_MIPS_64, 18)
57 RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
58 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
59 RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
60 RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
61 RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
62 RELOC_NUMBER (R_MIPS_SUB, 24)
63 RELOC_NUMBER (R_MIPS_INSERT_A, 25)
64 RELOC_NUMBER (R_MIPS_INSERT_B, 26)
65 RELOC_NUMBER (R_MIPS_DELETE, 27)
66 RELOC_NUMBER (R_MIPS_HIGHER, 28)
67 RELOC_NUMBER (R_MIPS_HIGHEST, 29)
68 RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
69 RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
70 RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
71 RELOC_NUMBER (R_MIPS_REL16, 33)
72 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
73 RELOC_NUMBER (R_MIPS_PJUMP, 35)
74 RELOC_NUMBER (R_MIPS_RELGOT, 36)
75 RELOC_NUMBER (R_MIPS_JALR, 37)
76 /* TLS relocations. */
77 RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
78 RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
79 RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
80 RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
81 RELOC_NUMBER (R_MIPS_TLS_GD, 42)
82 RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
83 RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
84 RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
85 RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
86 RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
87 RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
88 RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
89 RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
90 FAKE_RELOC (R_MIPS_max, 51)
91 /* These relocs are used for the mips16. */
92 FAKE_RELOC (R_MIPS16_min, 100)
93 RELOC_NUMBER (R_MIPS16_26, 100)
94 RELOC_NUMBER (R_MIPS16_GPREL, 101)
95 RELOC_NUMBER (R_MIPS16_GOT16, 102)
96 RELOC_NUMBER (R_MIPS16_CALL16, 103)
97 RELOC_NUMBER (R_MIPS16_HI16, 104)
98 RELOC_NUMBER (R_MIPS16_LO16, 105)
99 FAKE_RELOC (R_MIPS16_max, 106)
100 /* This was a GNU extension used by embedded-PIC. It was co-opted by
101 mips-linux for exception-handling data. It is no longer used, but
102 should continue to be supported by the linker for backward
103 compatibility. (GCC stopped using it in May, 2004.) */
104 RELOC_NUMBER (R_MIPS_PC32, 248)
105 /* FIXME: this relocation is used internally by gas. */
106 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
107 /* These are GNU extensions to enable C++ vtable garbage collection. */
108 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
109 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
110 END_RELOC_NUMBERS (R_MIPS_maxext)
112 /* Processor specific flags for the ELF header e_flags field. */
114 /* At least one .noreorder directive appears in the source. */
115 #define EF_MIPS_NOREORDER 0x00000001
117 /* File contains position independent code. */
118 #define EF_MIPS_PIC 0x00000002
120 /* Code in file uses the standard calling sequence for calling
121 position independent code. */
122 #define EF_MIPS_CPIC 0x00000004
124 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */
125 #define EF_MIPS_XGOT 0x00000008
127 /* Code in file uses UCODE (obsolete) */
128 #define EF_MIPS_UCODE 0x00000010
130 /* Code in file uses new ABI (-n32 on Irix 6). */
131 #define EF_MIPS_ABI2 0x00000020
133 /* Process the .MIPS.options section first by ld */
134 #define EF_MIPS_OPTIONS_FIRST 0x00000080
136 /* Architectural Extensions used by this file */
137 #define EF_MIPS_ARCH_ASE 0x0f000000
139 /* Use MDMX multimedia extensions */
140 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000
142 /* Use MIPS-16 ISA extensions */
143 #define EF_MIPS_ARCH_ASE_M16 0x04000000
145 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
146 (regs are 32-bits wide.) */
147 #define EF_MIPS_32BITMODE 0x00000100
149 /* Four bit MIPS architecture field. */
150 #define EF_MIPS_ARCH 0xf0000000
153 #define E_MIPS_ARCH_1 0x00000000
156 #define E_MIPS_ARCH_2 0x10000000
159 #define E_MIPS_ARCH_3 0x20000000
162 #define E_MIPS_ARCH_4 0x30000000
165 #define E_MIPS_ARCH_5 0x40000000
168 #define E_MIPS_ARCH_32 0x50000000
171 #define E_MIPS_ARCH_64 0x60000000
173 /* -mips32r2 code. */
174 #define E_MIPS_ARCH_32R2 0x70000000
176 /* -mips64r2 code. */
177 #define E_MIPS_ARCH_64R2 0x80000000
179 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */
180 #define EF_MIPS_ABI 0x0000F000
182 /* The original o32 abi. */
183 #define E_MIPS_ABI_O32 0x00001000
185 /* O32 extended to work on 64 bit architectures */
186 #define E_MIPS_ABI_O64 0x00002000
188 /* EABI in 32 bit mode */
189 #define E_MIPS_ABI_EABI32 0x00003000
191 /* EABI in 64 bit mode */
192 #define E_MIPS_ABI_EABI64 0x00004000
195 /* Machine variant if we know it. This field was invented at Cygnus,
196 but it is hoped that other vendors will adopt it. If some standard
197 is developed, this code should be changed to follow it. */
199 #define EF_MIPS_MACH 0x00FF0000
201 /* Cygnus is choosing values between 80 and 9F;
202 00 - 7F should be left for a future standard;
203 the rest are open. */
205 #define E_MIPS_MACH_3900 0x00810000
206 #define E_MIPS_MACH_4010 0x00820000
207 #define E_MIPS_MACH_4100 0x00830000
208 #define E_MIPS_MACH_4650 0x00850000
209 #define E_MIPS_MACH_4120 0x00870000
210 #define E_MIPS_MACH_4111 0x00880000
211 #define E_MIPS_MACH_SB1 0x008a0000
212 #define E_MIPS_MACH_5400 0x00910000
213 #define E_MIPS_MACH_5500 0x00980000
214 #define E_MIPS_MACH_9000 0x00990000
216 /* Processor specific section indices. These sections do not actually
217 exist. Symbols with a st_shndx field corresponding to one of these
218 values have a special meaning. */
220 /* Defined and allocated common symbol. Value is virtual address. If
221 relocated, alignment must be preserved. */
222 #define SHN_MIPS_ACOMMON 0xff00
224 /* Defined and allocated text symbol. Value is virtual address.
225 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
226 #define SHN_MIPS_TEXT 0xff01
228 /* Defined and allocated data symbol. Value is virtual address.
229 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
230 #define SHN_MIPS_DATA 0xff02
232 /* Small common symbol. */
233 #define SHN_MIPS_SCOMMON 0xff03
235 /* Small undefined symbol. */
236 #define SHN_MIPS_SUNDEFINED 0xff04
238 /* Processor specific section types. */
240 /* Section contains the set of dynamic shared objects used when
241 statically linking. */
242 #define SHT_MIPS_LIBLIST 0x70000000
244 /* I'm not sure what this is, but it's used on Irix 5. */
245 #define SHT_MIPS_MSYM 0x70000001
247 /* Section contains list of symbols whose definitions conflict with
248 symbols defined in shared objects. */
249 #define SHT_MIPS_CONFLICT 0x70000002
251 /* Section contains the global pointer table. */
252 #define SHT_MIPS_GPTAB 0x70000003
254 /* Section contains microcode information. The exact format is
256 #define SHT_MIPS_UCODE 0x70000004
258 /* Section contains some sort of debugging information. The exact
259 format is unspecified. It's probably ECOFF symbols. */
260 #define SHT_MIPS_DEBUG 0x70000005
262 /* Section contains register usage information. */
263 #define SHT_MIPS_REGINFO 0x70000006
266 #define SHT_MIPS_PACKAGE 0x70000007
269 #define SHT_MIPS_PACKSYM 0x70000008
272 #define SHT_MIPS_RELD 0x70000009
274 /* Section contains interface information. */
275 #define SHT_MIPS_IFACE 0x7000000b
277 /* Section contains description of contents of another section. */
278 #define SHT_MIPS_CONTENT 0x7000000c
280 /* Section contains miscellaneous options. */
281 #define SHT_MIPS_OPTIONS 0x7000000d
284 #define SHT_MIPS_SHDR 0x70000010
287 #define SHT_MIPS_FDESC 0x70000011
290 #define SHT_MIPS_EXTSYM 0x70000012
293 #define SHT_MIPS_DENSE 0x70000013
296 #define SHT_MIPS_PDESC 0x70000014
299 #define SHT_MIPS_LOCSYM 0x70000015
302 #define SHT_MIPS_AUXSYM 0x70000016
305 #define SHT_MIPS_OPTSYM 0x70000017
308 #define SHT_MIPS_LOCSTR 0x70000018
311 #define SHT_MIPS_LINE 0x70000019
314 #define SHT_MIPS_RFDESC 0x7000001a
316 /* Delta C++: symbol table */
317 #define SHT_MIPS_DELTASYM 0x7000001b
319 /* Delta C++: instance table */
320 #define SHT_MIPS_DELTAINST 0x7000001c
322 /* Delta C++: class table */
323 #define SHT_MIPS_DELTACLASS 0x7000001d
325 /* DWARF debugging section. */
326 #define SHT_MIPS_DWARF 0x7000001e
328 /* Delta C++: declarations */
329 #define SHT_MIPS_DELTADECL 0x7000001f
331 /* List of libraries the binary depends on. Includes a time stamp, version
333 #define SHT_MIPS_SYMBOL_LIB 0x70000020
335 /* Events section. */
336 #define SHT_MIPS_EVENTS 0x70000021
339 #define SHT_MIPS_TRANSLATE 0x70000022
341 /* Special pixie sections */
342 #define SHT_MIPS_PIXIE 0x70000023
344 /* Address translation table (for debug info) */
345 #define SHT_MIPS_XLATE 0x70000024
347 /* SGI internal address translation table (for debug info) */
348 #define SHT_MIPS_XLATE_DEBUG 0x70000025
350 /* Intermediate code */
351 #define SHT_MIPS_WHIRL 0x70000026
353 /* C++ exception handling region info */
354 #define SHT_MIPS_EH_REGION 0x70000027
356 /* Obsolete address translation table (for debug info) */
357 #define SHT_MIPS_XLATE_OLD 0x70000028
359 /* Runtime procedure descriptor table exception information (ucode) ??? */
360 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
363 /* A section of type SHT_MIPS_LIBLIST contains an array of the
364 following structure. The sh_link field is the section index of the
365 string table. The sh_info field is the number of entries in the
369 /* String table index for name of shared object. */
370 unsigned long l_name;
372 unsigned long l_time_stamp;
373 /* Checksum of symbol names and common sizes. */
374 unsigned long l_checksum;
375 /* String table index for version. */
376 unsigned long l_version;
378 unsigned long l_flags;
381 /* The external version of Elf32_Lib. */
384 unsigned char l_name[4];
385 unsigned char l_time_stamp[4];
386 unsigned char l_checksum[4];
387 unsigned char l_version[4];
388 unsigned char l_flags[4];
389 } Elf32_External_Lib;
391 /* The l_flags field of an Elf32_Lib structure may contain the
394 /* Require an exact match at runtime. */
395 #define LL_EXACT_MATCH 0x00000001
397 /* Ignore version incompatibilities at runtime. */
398 #define LL_IGNORE_INT_VER 0x00000002
400 /* Require matching minor version number. */
401 #define LL_REQUIRE_MINOR 0x00000004
404 #define LL_EXPORTS 0x00000008
406 /* Delay loading of this library until really needed. */
407 #define LL_DELAY_LOAD 0x00000010
409 /* ??? Delta C++ stuff ??? */
410 #define LL_DELTA 0x00000020
413 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
414 .dynsym section. Each element has the following type. */
415 typedef unsigned long Elf32_Conflict;
416 typedef unsigned char Elf32_External_Conflict[4];
418 typedef unsigned long Elf64_Conflict;
419 typedef unsigned char Elf64_External_Conflict[8];
421 /* A section of type SHT_MIPS_GPTAB contains information about how
422 much GP space would be required for different -G arguments. This
423 information is only used so that the linker can provide informative
424 suggestions as to the best -G value to use. The sh_info field is
425 the index of the section for which this information applies. The
426 contents of the section are an array of the following union. The
427 first element uses the gt_header field. The remaining elements use
428 the gt_entry field. */
433 /* -G value actually used for this object file. */
434 unsigned long gt_current_g_value;
436 unsigned long gt_unused;
440 /* If this -G argument has been used... */
441 unsigned long gt_g_value;
442 /* ...this many GP section bytes would be required. */
443 unsigned long gt_bytes;
447 /* The external version of Elf32_gptab. */
453 unsigned char gt_current_g_value[4];
454 unsigned char gt_unused[4];
458 unsigned char gt_g_value[4];
459 unsigned char gt_bytes[4];
461 } Elf32_External_gptab;
463 /* A section of type SHT_MIPS_REGINFO contains the following
467 /* Mask of general purpose registers used. */
468 unsigned long ri_gprmask;
469 /* Mask of co-processor registers used. */
470 unsigned long ri_cprmask[4];
471 /* GP register value for this object file. */
475 /* The external version of the Elf_RegInfo structure. */
478 unsigned char ri_gprmask[4];
479 unsigned char ri_cprmask[4][4];
480 unsigned char ri_gp_value[4];
481 } Elf32_External_RegInfo;
483 /* MIPS ELF .reginfo swapping routines. */
484 extern void bfd_mips_elf32_swap_reginfo_in
485 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
486 extern void bfd_mips_elf32_swap_reginfo_out
487 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
489 /* Processor specific section flags. */
491 /* This section must be in the global data area. */
492 #define SHF_MIPS_GPREL 0x10000000
494 /* This section should be merged. */
495 #define SHF_MIPS_MERGE 0x20000000
497 /* This section contains address data of size implied by section
499 #define SHF_MIPS_ADDR 0x40000000
501 /* This section contains string data. */
502 #define SHF_MIPS_STRING 0x80000000
504 /* This section may not be stripped. */
505 #define SHF_MIPS_NOSTRIP 0x08000000
507 /* This section is local to threads. */
508 #define SHF_MIPS_LOCAL 0x04000000
510 /* Linker should generate implicit weak names for this section. */
511 #define SHF_MIPS_NAMES 0x02000000
513 /* Section contais text/data which may be replicated in other sections.
514 Linker should retain only one copy. */
515 #define SHF_MIPS_NODUPES 0x01000000
517 /* Processor specific program header types. */
519 /* Register usage information. Identifies one .reginfo section. */
520 #define PT_MIPS_REGINFO 0x70000000
522 /* Runtime procedure table. */
523 #define PT_MIPS_RTPROC 0x70000001
525 /* .MIPS.options section. */
526 #define PT_MIPS_OPTIONS 0x70000002
528 /* Processor specific dynamic array tags. */
530 /* 32 bit version number for runtime linker interface. */
531 #define DT_MIPS_RLD_VERSION 0x70000001
534 #define DT_MIPS_TIME_STAMP 0x70000002
536 /* Checksum of external strings and common sizes. */
537 #define DT_MIPS_ICHECKSUM 0x70000003
539 /* Index of version string in string table. */
540 #define DT_MIPS_IVERSION 0x70000004
542 /* 32 bits of flags. */
543 #define DT_MIPS_FLAGS 0x70000005
545 /* Base address of the segment. */
546 #define DT_MIPS_BASE_ADDRESS 0x70000006
549 #define DT_MIPS_MSYM 0x70000007
551 /* Address of .conflict section. */
552 #define DT_MIPS_CONFLICT 0x70000008
554 /* Address of .liblist section. */
555 #define DT_MIPS_LIBLIST 0x70000009
557 /* Number of local global offset table entries. */
558 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
560 /* Number of entries in the .conflict section. */
561 #define DT_MIPS_CONFLICTNO 0x7000000b
563 /* Number of entries in the .liblist section. */
564 #define DT_MIPS_LIBLISTNO 0x70000010
566 /* Number of entries in the .dynsym section. */
567 #define DT_MIPS_SYMTABNO 0x70000011
569 /* Index of first external dynamic symbol not referenced locally. */
570 #define DT_MIPS_UNREFEXTNO 0x70000012
572 /* Index of first dynamic symbol in global offset table. */
573 #define DT_MIPS_GOTSYM 0x70000013
575 /* Number of page table entries in global offset table. */
576 #define DT_MIPS_HIPAGENO 0x70000014
578 /* Address of run time loader map, used for debugging. */
579 #define DT_MIPS_RLD_MAP 0x70000016
581 /* Delta C++ class definition. */
582 #define DT_MIPS_DELTA_CLASS 0x70000017
584 /* Number of entries in DT_MIPS_DELTA_CLASS. */
585 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
587 /* Delta C++ class instances. */
588 #define DT_MIPS_DELTA_INSTANCE 0x70000019
590 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
591 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
593 /* Delta relocations. */
594 #define DT_MIPS_DELTA_RELOC 0x7000001b
596 /* Number of entries in DT_MIPS_DELTA_RELOC. */
597 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
599 /* Delta symbols that Delta relocations refer to. */
600 #define DT_MIPS_DELTA_SYM 0x7000001d
602 /* Number of entries in DT_MIPS_DELTA_SYM. */
603 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
605 /* Delta symbols that hold class declarations. */
606 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
608 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
609 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
611 /* Flags indicating information about C++ flavor. */
612 #define DT_MIPS_CXX_FLAGS 0x70000022
614 /* Pixie information (???). */
615 #define DT_MIPS_PIXIE_INIT 0x70000023
617 /* Address of .MIPS.symlib */
618 #define DT_MIPS_SYMBOL_LIB 0x70000024
620 /* The GOT index of the first PTE for a segment */
621 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
623 /* The GOT index of the first PTE for a local symbol */
624 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
626 /* The GOT index of the first PTE for a hidden symbol */
627 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
629 /* The GOT index of the first PTE for a protected symbol */
630 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
632 /* Address of `.MIPS.options'. */
633 #define DT_MIPS_OPTIONS 0x70000029
635 /* Address of `.interface'. */
636 #define DT_MIPS_INTERFACE 0x7000002a
639 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
641 /* Size of the .interface section. */
642 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
644 /* Size of rld_text_resolve function stored in the GOT. */
645 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
647 /* Default suffix of DSO to be added by rld on dlopen() calls. */
648 #define DT_MIPS_PERF_SUFFIX 0x7000002e
650 /* Size of compact relocation section (O32). */
651 #define DT_MIPS_COMPACT_SIZE 0x7000002f
653 /* GP value for auxiliary GOTs. */
654 #define DT_MIPS_GP_VALUE 0x70000030
656 /* Address of auxiliary .dynamic. */
657 #define DT_MIPS_AUX_DYNAMIC 0x70000031
659 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
662 #define RHF_NONE 0x00000000
664 /* Uses shortcut pointers. */
665 #define RHF_QUICKSTART 0x00000001
667 /* Hash size is not a power of two. */
668 #define RHF_NOTPOT 0x00000002
670 /* Ignore LD_LIBRARY_PATH. */
671 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
673 /* DSO address may not be relocated. */
674 #define RHF_NO_MOVE 0x00000008
676 /* SGI specific features. */
677 #define RHF_SGI_ONLY 0x00000010
679 /* Guarantee that .init will finish executing before any non-init
680 code in DSO is called. */
681 #define RHF_GUARANTEE_INIT 0x00000020
683 /* Contains Delta C++ code. */
684 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
686 /* Guarantee that .init will start executing before any non-init
687 code in DSO is called. */
688 #define RHF_GUARANTEE_START_INIT 0x00000080
690 /* Generated by pixie. */
691 #define RHF_PIXIE 0x00000100
693 /* Delay-load DSO by default. */
694 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
696 /* Object may be requickstarted */
697 #define RHF_REQUICKSTART 0x00000400
699 /* Object has been requickstarted */
700 #define RHF_REQUICKSTARTED 0x00000800
702 /* Generated by cord. */
703 #define RHF_CORD 0x00001000
705 /* Object contains no unresolved undef symbols. */
706 #define RHF_NO_UNRES_UNDEF 0x00002000
708 /* Symbol table is in a safe order. */
709 #define RHF_RLD_ORDER_SAFE 0x00004000
711 /* Special values for the st_other field in the symbol table. These
712 are used in an Irix 5 dynamic symbol table. */
714 #define STO_DEFAULT STV_DEFAULT
715 #define STO_INTERNAL STV_INTERNAL
716 #define STO_HIDDEN STV_HIDDEN
717 #define STO_PROTECTED STV_PROTECTED
719 /* This value is used for a mips16 .text symbol. */
720 #define STO_MIPS16 0xf0
722 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
723 relocation entry specifies up to three actual relocations, all at
724 the same address. The first relocation which required a symbol
725 uses the symbol in the r_sym field. The second relocation which
726 requires a symbol uses the symbol in the r_ssym field. If all
727 three relocations require a symbol, the third one uses a zero
730 /* An entry in a 64 bit SHT_REL section. */
734 /* Address of relocation. */
735 unsigned char r_offset[8];
737 unsigned char r_sym[4];
738 /* Special symbol. */
739 unsigned char r_ssym[1];
740 /* Third relocation. */
741 unsigned char r_type3[1];
742 /* Second relocation. */
743 unsigned char r_type2[1];
744 /* First relocation. */
745 unsigned char r_type[1];
746 } Elf64_Mips_External_Rel;
750 /* Address of relocation. */
754 /* Special symbol. */
755 unsigned char r_ssym;
756 /* Third relocation. */
757 unsigned char r_type3;
758 /* Second relocation. */
759 unsigned char r_type2;
760 /* First relocation. */
761 unsigned char r_type;
762 } Elf64_Mips_Internal_Rel;
764 /* An entry in a 64 bit SHT_RELA section. */
768 /* Address of relocation. */
769 unsigned char r_offset[8];
771 unsigned char r_sym[4];
772 /* Special symbol. */
773 unsigned char r_ssym[1];
774 /* Third relocation. */
775 unsigned char r_type3[1];
776 /* Second relocation. */
777 unsigned char r_type2[1];
778 /* First relocation. */
779 unsigned char r_type[1];
781 unsigned char r_addend[8];
782 } Elf64_Mips_External_Rela;
786 /* Address of relocation. */
790 /* Special symbol. */
791 unsigned char r_ssym;
792 /* Third relocation. */
793 unsigned char r_type3;
794 /* Second relocation. */
795 unsigned char r_type2;
796 /* First relocation. */
797 unsigned char r_type;
799 bfd_signed_vma r_addend;
800 } Elf64_Mips_Internal_Rela;
802 /* MIPS ELF 64 relocation info access macros. */
803 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
804 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
805 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
806 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
808 /* Values found in the r_ssym field of a relocation entry. */
816 /* Value of GP in object being relocated. */
819 /* Address of location being relocated. */
822 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
823 which starts with this header. */
827 /* Type of option. */
828 unsigned char kind[1];
829 /* Size of option descriptor, including header. */
830 unsigned char size[1];
831 /* Section index of affected section, or 0 for global option. */
832 unsigned char section[2];
833 /* Information specific to this kind of option. */
834 unsigned char info[4];
835 } Elf_External_Options;
839 /* Type of option. */
841 /* Size of option descriptor, including header. */
843 /* Section index of affected section, or 0 for global option. */
844 unsigned short section;
845 /* Information specific to this kind of option. */
847 } Elf_Internal_Options;
849 /* MIPS ELF option header swapping routines. */
850 extern void bfd_mips_elf_swap_options_in
851 (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
852 extern void bfd_mips_elf_swap_options_out
853 (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
855 /* Values which may appear in the kind field of an Elf_Options
861 /* Register usage and GP value. */
862 #define ODK_REGINFO 1
864 /* Exception processing information. */
865 #define ODK_EXCEPTIONS 2
867 /* Section padding information. */
870 /* Hardware workarounds performed. */
871 #define ODK_HWPATCH 4
873 /* Fill value used by the linker. */
876 /* Reserved space for desktop tools. */
879 /* Hardware workarounds, AND bits when merging. */
882 /* Hardware workarounds, OR bits when merging. */
885 /* GP group to use for text/data sections. */
886 #define ODK_GP_GROUP 9
888 /* ID information. */
891 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
892 structure. In the 64 bit ABI, it is the following structure. The
893 info field of the options header is not used. */
897 /* Mask of general purpose registers used. */
898 unsigned char ri_gprmask[4];
900 unsigned char ri_pad[4];
901 /* Mask of co-processor registers used. */
902 unsigned char ri_cprmask[4][4];
903 /* GP register value for this object file. */
904 unsigned char ri_gp_value[8];
905 } Elf64_External_RegInfo;
909 /* Mask of general purpose registers used. */
910 unsigned long ri_gprmask;
912 unsigned long ri_pad;
913 /* Mask of co-processor registers used. */
914 unsigned long ri_cprmask[4];
915 /* GP register value for this object file. */
917 } Elf64_Internal_RegInfo;
921 /* The hash value computed from the name of the corresponding
923 unsigned char ms_hash_value[4];
924 /* Contains both the dynamic relocation index and the symbol flags
925 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
926 to access the individual values. The dynamic relocation index
927 identifies the first entry in the .rel.dyn section that
928 references the dynamic symbol corresponding to this msym entry.
929 If the index is 0, no dynamic relocations are associated with the
930 symbol. The symbol flags field is reserved for future use. */
931 unsigned char ms_info[4];
932 } Elf32_External_Msym;
936 /* The hash value computed from the name of the corresponding
938 unsigned long ms_hash_value;
939 /* Contains both the dynamic relocation index and the symbol flags
940 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
941 to access the individual values. The dynamic relocation index
942 identifies the first entry in the .rel.dyn section that
943 references the dynamic symbol corresponding to this msym entry.
944 If the index is 0, no dynamic relocations are associated with the
945 symbol. The symbol flags field is reserved for future use. */
946 unsigned long ms_info;
947 } Elf32_Internal_Msym;
949 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
950 #define ELF32_MS_FLAGS(i) (i) & 0xff)
951 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
953 /* MIPS ELF reginfo swapping routines. */
954 extern void bfd_mips_elf64_swap_reginfo_in
955 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
956 extern void bfd_mips_elf64_swap_reginfo_out
957 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
959 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
960 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
961 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
962 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
963 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
964 #define OEX_FPDBUG 0x40000 /* Force precise floating-point
965 exceptions (debug mode). */
966 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
968 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
969 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
970 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
971 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
972 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
973 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
975 /* Masks for the info word of an ODK_PAD descriptor. */
976 #define OPAD_PREFIX 0x01
977 #define OPAD_POSTFIX 0x02
978 #define OPAD_SYMBOL 0x04
980 /* Masks for the info word of an ODK_HWPATCH descriptor. */
981 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */
982 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */
983 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */
984 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug
986 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned
989 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
990 #define OGP_GROUP 0x0000ffff /* GP group number. */
991 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
993 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
994 #define OHWA0_R4KEOP_CHECKED 0x00000001
995 #define OHWA0_R4KEOP_CLEAN 0x00000002
998 #endif /* _ELF_MIPS_H */