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 FAKE_RELOC (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
193 #define E_MIPS_MACH_9000 0x00990000
195 /* Processor specific section indices. These sections do not actually
196 exist. Symbols with a st_shndx field corresponding to one of these
197 values have a special meaning. */
199 /* Defined and allocated common symbol. Value is virtual address. If
200 relocated, alignment must be preserved. */
201 #define SHN_MIPS_ACOMMON 0xff00
203 /* Defined and allocated text symbol. Value is virtual address.
204 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
205 #define SHN_MIPS_TEXT 0xff01
207 /* Defined and allocated data symbol. Value is virtual address.
208 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
209 #define SHN_MIPS_DATA 0xff02
211 /* Small common symbol. */
212 #define SHN_MIPS_SCOMMON 0xff03
214 /* Small undefined symbol. */
215 #define SHN_MIPS_SUNDEFINED 0xff04
217 /* Processor specific section types. */
219 /* Section contains the set of dynamic shared objects used when
220 statically linking. */
221 #define SHT_MIPS_LIBLIST 0x70000000
223 /* I'm not sure what this is, but it's used on Irix 5. */
224 #define SHT_MIPS_MSYM 0x70000001
226 /* Section contains list of symbols whose definitions conflict with
227 symbols defined in shared objects. */
228 #define SHT_MIPS_CONFLICT 0x70000002
230 /* Section contains the global pointer table. */
231 #define SHT_MIPS_GPTAB 0x70000003
233 /* Section contains microcode information. The exact format is
235 #define SHT_MIPS_UCODE 0x70000004
237 /* Section contains some sort of debugging information. The exact
238 format is unspecified. It's probably ECOFF symbols. */
239 #define SHT_MIPS_DEBUG 0x70000005
241 /* Section contains register usage information. */
242 #define SHT_MIPS_REGINFO 0x70000006
245 #define SHT_MIPS_PACKAGE 0x70000007
248 #define SHT_MIPS_PACKSYM 0x70000008
251 #define SHT_MIPS_RELD 0x70000009
253 /* Section contains interface information. */
254 #define SHT_MIPS_IFACE 0x7000000b
256 /* Section contains description of contents of another section. */
257 #define SHT_MIPS_CONTENT 0x7000000c
259 /* Section contains miscellaneous options. */
260 #define SHT_MIPS_OPTIONS 0x7000000d
263 #define SHT_MIPS_SHDR 0x70000010
266 #define SHT_MIPS_FDESC 0x70000011
269 #define SHT_MIPS_EXTSYM 0x70000012
272 #define SHT_MIPS_DENSE 0x70000013
275 #define SHT_MIPS_PDESC 0x70000014
278 #define SHT_MIPS_LOCSYM 0x70000015
281 #define SHT_MIPS_AUXSYM 0x70000016
284 #define SHT_MIPS_OPTSYM 0x70000017
287 #define SHT_MIPS_LOCSTR 0x70000018
290 #define SHT_MIPS_LINE 0x70000019
293 #define SHT_MIPS_RFDESC 0x7000001a
295 /* Delta C++: symbol table */
296 #define SHT_MIPS_DELTASYM 0x7000001b
298 /* Delta C++: instance table */
299 #define SHT_MIPS_DELTAINST 0x7000001c
301 /* Delta C++: class table */
302 #define SHT_MIPS_DELTACLASS 0x7000001d
304 /* DWARF debugging section. */
305 #define SHT_MIPS_DWARF 0x7000001e
307 /* Delta C++: declarations */
308 #define SHT_MIPS_DELTADECL 0x7000001f
310 /* List of libraries the binary depends on. Includes a time stamp, version
312 #define SHT_MIPS_SYMBOL_LIB 0x70000020
314 /* Events section. */
315 #define SHT_MIPS_EVENTS 0x70000021
318 #define SHT_MIPS_TRANSLATE 0x70000022
320 /* Special pixie sections */
321 #define SHT_MIPS_PIXIE 0x70000023
323 /* Address translation table (for debug info) */
324 #define SHT_MIPS_XLATE 0x70000024
326 /* SGI internal address translation table (for debug info) */
327 #define SHT_MIPS_XLATE_DEBUG 0x70000025
329 /* Intermediate code */
330 #define SHT_MIPS_WHIRL 0x70000026
332 /* C++ exception handling region info */
333 #define SHT_MIPS_EH_REGION 0x70000027
335 /* Obsolete address translation table (for debug info) */
336 #define SHT_MIPS_XLATE_OLD 0x70000028
338 /* Runtime procedure descriptor table exception information (ucode) ??? */
339 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
342 /* A section of type SHT_MIPS_LIBLIST contains an array of the
343 following structure. The sh_link field is the section index of the
344 string table. The sh_info field is the number of entries in the
348 /* String table index for name of shared object. */
349 unsigned long l_name;
351 unsigned long l_time_stamp;
352 /* Checksum of symbol names and common sizes. */
353 unsigned long l_checksum;
354 /* String table index for version. */
355 unsigned long l_version;
357 unsigned long l_flags;
360 /* The external version of Elf32_Lib. */
363 unsigned char l_name[4];
364 unsigned char l_time_stamp[4];
365 unsigned char l_checksum[4];
366 unsigned char l_version[4];
367 unsigned char l_flags[4];
368 } Elf32_External_Lib;
370 /* The l_flags field of an Elf32_Lib structure may contain the
373 /* Require an exact match at runtime. */
374 #define LL_EXACT_MATCH 0x00000001
376 /* Ignore version incompatibilities at runtime. */
377 #define LL_IGNORE_INT_VER 0x00000002
379 /* Require matching minor version number. */
380 #define LL_REQUIRE_MINOR 0x00000004
383 #define LL_EXPORTS 0x00000008
385 /* Delay loading of this library until really needed. */
386 #define LL_DELAY_LOAD 0x00000010
388 /* ??? Delta C++ stuff ??? */
389 #define LL_DELTA 0x00000020
392 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
393 .dynsym section. Each element has the following type. */
394 typedef unsigned long Elf32_Conflict;
395 typedef unsigned char Elf32_External_Conflict[4];
397 typedef unsigned long Elf64_Conflict;
398 typedef unsigned char Elf64_External_Conflict[8];
400 /* A section of type SHT_MIPS_GPTAB contains information about how
401 much GP space would be required for different -G arguments. This
402 information is only used so that the linker can provide informative
403 suggestions as to the best -G value to use. The sh_info field is
404 the index of the section for which this information applies. The
405 contents of the section are an array of the following union. The
406 first element uses the gt_header field. The remaining elements use
407 the gt_entry field. */
412 /* -G value actually used for this object file. */
413 unsigned long gt_current_g_value;
415 unsigned long gt_unused;
419 /* If this -G argument has been used... */
420 unsigned long gt_g_value;
421 /* ...this many GP section bytes would be required. */
422 unsigned long gt_bytes;
426 /* The external version of Elf32_gptab. */
432 unsigned char gt_current_g_value[4];
433 unsigned char gt_unused[4];
437 unsigned char gt_g_value[4];
438 unsigned char gt_bytes[4];
440 } Elf32_External_gptab;
442 /* A section of type SHT_MIPS_REGINFO contains the following
446 /* Mask of general purpose registers used. */
447 unsigned long ri_gprmask;
448 /* Mask of co-processor registers used. */
449 unsigned long ri_cprmask[4];
450 /* GP register value for this object file. */
454 /* The external version of the Elf_RegInfo structure. */
457 unsigned char ri_gprmask[4];
458 unsigned char ri_cprmask[4][4];
459 unsigned char ri_gp_value[4];
460 } Elf32_External_RegInfo;
462 /* MIPS ELF .reginfo swapping routines. */
463 extern void bfd_mips_elf32_swap_reginfo_in
464 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
465 extern void bfd_mips_elf32_swap_reginfo_out
466 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
468 /* Processor specific section flags. */
470 /* This section must be in the global data area. */
471 #define SHF_MIPS_GPREL 0x10000000
473 /* This section should be merged. */
474 #define SHF_MIPS_MERGE 0x20000000
476 /* This section contains address data of size implied by section
478 #define SHF_MIPS_ADDR 0x40000000
480 /* This section contains string data. */
481 #define SHF_MIPS_STRING 0x80000000
483 /* This section may not be stripped. */
484 #define SHF_MIPS_NOSTRIP 0x08000000
486 /* This section is local to threads. */
487 #define SHF_MIPS_LOCAL 0x04000000
489 /* Linker should generate implicit weak names for this section. */
490 #define SHF_MIPS_NAMES 0x02000000
492 /* Section contais text/data which may be replicated in other sections.
493 Linker should retain only one copy. */
494 #define SHF_MIPS_NODUPES 0x01000000
496 /* Processor specific program header types. */
498 /* Register usage information. Identifies one .reginfo section. */
499 #define PT_MIPS_REGINFO 0x70000000
501 /* Runtime procedure table. */
502 #define PT_MIPS_RTPROC 0x70000001
504 /* .MIPS.options section. */
505 #define PT_MIPS_OPTIONS 0x70000002
507 /* Processor specific dynamic array tags. */
509 /* 32 bit version number for runtime linker interface. */
510 #define DT_MIPS_RLD_VERSION 0x70000001
513 #define DT_MIPS_TIME_STAMP 0x70000002
515 /* Checksum of external strings and common sizes. */
516 #define DT_MIPS_ICHECKSUM 0x70000003
518 /* Index of version string in string table. */
519 #define DT_MIPS_IVERSION 0x70000004
521 /* 32 bits of flags. */
522 #define DT_MIPS_FLAGS 0x70000005
524 /* Base address of the segment. */
525 #define DT_MIPS_BASE_ADDRESS 0x70000006
528 #define DT_MIPS_MSYM 0x70000007
530 /* Address of .conflict section. */
531 #define DT_MIPS_CONFLICT 0x70000008
533 /* Address of .liblist section. */
534 #define DT_MIPS_LIBLIST 0x70000009
536 /* Number of local global offset table entries. */
537 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
539 /* Number of entries in the .conflict section. */
540 #define DT_MIPS_CONFLICTNO 0x7000000b
542 /* Number of entries in the .liblist section. */
543 #define DT_MIPS_LIBLISTNO 0x70000010
545 /* Number of entries in the .dynsym section. */
546 #define DT_MIPS_SYMTABNO 0x70000011
548 /* Index of first external dynamic symbol not referenced locally. */
549 #define DT_MIPS_UNREFEXTNO 0x70000012
551 /* Index of first dynamic symbol in global offset table. */
552 #define DT_MIPS_GOTSYM 0x70000013
554 /* Number of page table entries in global offset table. */
555 #define DT_MIPS_HIPAGENO 0x70000014
557 /* Address of run time loader map, used for debugging. */
558 #define DT_MIPS_RLD_MAP 0x70000016
560 /* Delta C++ class definition. */
561 #define DT_MIPS_DELTA_CLASS 0x70000017
563 /* Number of entries in DT_MIPS_DELTA_CLASS. */
564 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
566 /* Delta C++ class instances. */
567 #define DT_MIPS_DELTA_INSTANCE 0x70000019
569 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
570 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
572 /* Delta relocations. */
573 #define DT_MIPS_DELTA_RELOC 0x7000001b
575 /* Number of entries in DT_MIPS_DELTA_RELOC. */
576 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
578 /* Delta symbols that Delta relocations refer to. */
579 #define DT_MIPS_DELTA_SYM 0x7000001d
581 /* Number of entries in DT_MIPS_DELTA_SYM. */
582 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
584 /* Delta symbols that hold class declarations. */
585 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
587 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
588 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
590 /* Flags indicating information about C++ flavor. */
591 #define DT_MIPS_CXX_FLAGS 0x70000022
593 /* Pixie information (???). */
594 #define DT_MIPS_PIXIE_INIT 0x70000023
596 /* Address of .MIPS.symlib */
597 #define DT_MIPS_SYMBOL_LIB 0x70000024
599 /* The GOT index of the first PTE for a segment */
600 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
602 /* The GOT index of the first PTE for a local symbol */
603 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
605 /* The GOT index of the first PTE for a hidden symbol */
606 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
608 /* The GOT index of the first PTE for a protected symbol */
609 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
611 /* Address of `.MIPS.options'. */
612 #define DT_MIPS_OPTIONS 0x70000029
614 /* Address of `.interface'. */
615 #define DT_MIPS_INTERFACE 0x7000002a
618 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
620 /* Size of the .interface section. */
621 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
623 /* Size of rld_text_resolve function stored in the GOT. */
624 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
626 /* Default suffix of DSO to be added by rld on dlopen() calls. */
627 #define DT_MIPS_PERF_SUFFIX 0x7000002e
629 /* Size of compact relocation section (O32). */
630 #define DT_MIPS_COMPACT_SIZE 0x7000002f
632 /* GP value for auxiliary GOTs. */
633 #define DT_MIPS_GP_VALUE 0x70000030
635 /* Address of auxiliary .dynamic. */
636 #define DT_MIPS_AUX_DYNAMIC 0x70000031
638 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
641 #define RHF_NONE 0x00000000
643 /* Uses shortcut pointers. */
644 #define RHF_QUICKSTART 0x00000001
646 /* Hash size is not a power of two. */
647 #define RHF_NOTPOT 0x00000002
649 /* Ignore LD_LIBRARY_PATH. */
650 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
652 /* DSO address may not be relocated. */
653 #define RHF_NO_MOVE 0x00000008
655 /* SGI specific features. */
656 #define RHF_SGI_ONLY 0x00000010
658 /* Guarantee that .init will finish executing before any non-init
659 code in DSO is called. */
660 #define RHF_GUARANTEE_INIT 0x00000020
662 /* Contains Delta C++ code. */
663 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
665 /* Guarantee that .init will start executing before any non-init
666 code in DSO is called. */
667 #define RHF_GUARANTEE_START_INIT 0x00000080
669 /* Generated by pixie. */
670 #define RHF_PIXIE 0x00000100
672 /* Delay-load DSO by default. */
673 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
675 /* Object may be requickstarted */
676 #define RHF_REQUICKSTART 0x00000400
678 /* Object has been requickstarted */
679 #define RHF_REQUICKSTARTED 0x00000800
681 /* Generated by cord. */
682 #define RHF_CORD 0x00001000
684 /* Object contains no unresolved undef symbols. */
685 #define RHF_NO_UNRES_UNDEF 0x00002000
687 /* Symbol table is in a safe order. */
688 #define RHF_RLD_ORDER_SAFE 0x00004000
690 /* Special values for the st_other field in the symbol table. These
691 are used in an Irix 5 dynamic symbol table. */
693 #define STO_DEFAULT STV_DEFAULT
694 #define STO_INTERNAL STV_INTERNAL
695 #define STO_HIDDEN STV_HIDDEN
696 #define STO_PROTECTED STV_PROTECTED
698 /* This value is used for a mips16 .text symbol. */
699 #define STO_MIPS16 0xf0
701 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
702 relocation entry specifies up to three actual relocations, all at
703 the same address. The first relocation which required a symbol
704 uses the symbol in the r_sym field. The second relocation which
705 requires a symbol uses the symbol in the r_ssym field. If all
706 three relocations require a symbol, the third one uses a zero
709 /* An entry in a 64 bit SHT_REL section. */
713 /* Address of relocation. */
714 unsigned char r_offset[8];
716 unsigned char r_sym[4];
717 /* Special symbol. */
718 unsigned char r_ssym[1];
719 /* Third relocation. */
720 unsigned char r_type3[1];
721 /* Second relocation. */
722 unsigned char r_type2[1];
723 /* First relocation. */
724 unsigned char r_type[1];
725 } Elf64_Mips_External_Rel;
729 /* Address of relocation. */
733 /* Special symbol. */
734 unsigned char r_ssym;
735 /* Third relocation. */
736 unsigned char r_type3;
737 /* Second relocation. */
738 unsigned char r_type2;
739 /* First relocation. */
740 unsigned char r_type;
741 } Elf64_Mips_Internal_Rel;
743 /* An entry in a 64 bit SHT_RELA section. */
747 /* Address of relocation. */
748 unsigned char r_offset[8];
750 unsigned char r_sym[4];
751 /* Special symbol. */
752 unsigned char r_ssym[1];
753 /* Third relocation. */
754 unsigned char r_type3[1];
755 /* Second relocation. */
756 unsigned char r_type2[1];
757 /* First relocation. */
758 unsigned char r_type[1];
760 unsigned char r_addend[8];
761 } Elf64_Mips_External_Rela;
765 /* Address of relocation. */
769 /* Special symbol. */
770 unsigned char r_ssym;
771 /* Third relocation. */
772 unsigned char r_type3;
773 /* Second relocation. */
774 unsigned char r_type2;
775 /* First relocation. */
776 unsigned char r_type;
778 bfd_signed_vma r_addend;
779 } Elf64_Mips_Internal_Rela;
781 /* MIPS ELF 64 relocation info access macros. */
782 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
783 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
784 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
785 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
787 /* Values found in the r_ssym field of a relocation entry. */
795 /* Value of GP in object being relocated. */
798 /* Address of location being relocated. */
801 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
802 which starts with this header. */
806 /* Type of option. */
807 unsigned char kind[1];
808 /* Size of option descriptor, including header. */
809 unsigned char size[1];
810 /* Section index of affected section, or 0 for global option. */
811 unsigned char section[2];
812 /* Information specific to this kind of option. */
813 unsigned char info[4];
814 } Elf_External_Options;
818 /* Type of option. */
820 /* Size of option descriptor, including header. */
822 /* Section index of affected section, or 0 for global option. */
823 unsigned short section;
824 /* Information specific to this kind of option. */
826 } Elf_Internal_Options;
828 /* MIPS ELF option header swapping routines. */
829 extern void bfd_mips_elf_swap_options_in
830 (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
831 extern void bfd_mips_elf_swap_options_out
832 (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
834 /* Values which may appear in the kind field of an Elf_Options
840 /* Register usage and GP value. */
841 #define ODK_REGINFO 1
843 /* Exception processing information. */
844 #define ODK_EXCEPTIONS 2
846 /* Section padding information. */
849 /* Hardware workarounds performed. */
850 #define ODK_HWPATCH 4
852 /* Fill value used by the linker. */
855 /* Reserved space for desktop tools. */
858 /* Hardware workarounds, AND bits when merging. */
861 /* Hardware workarounds, OR bits when merging. */
864 /* GP group to use for text/data sections. */
865 #define ODK_GP_GROUP 9
867 /* ID information. */
870 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
871 structure. In the 64 bit ABI, it is the following structure. The
872 info field of the options header is not used. */
876 /* Mask of general purpose registers used. */
877 unsigned char ri_gprmask[4];
879 unsigned char ri_pad[4];
880 /* Mask of co-processor registers used. */
881 unsigned char ri_cprmask[4][4];
882 /* GP register value for this object file. */
883 unsigned char ri_gp_value[8];
884 } Elf64_External_RegInfo;
888 /* Mask of general purpose registers used. */
889 unsigned long ri_gprmask;
891 unsigned long ri_pad;
892 /* Mask of co-processor registers used. */
893 unsigned long ri_cprmask[4];
894 /* GP register value for this object file. */
896 } Elf64_Internal_RegInfo;
900 /* The hash value computed from the name of the corresponding
902 unsigned char ms_hash_value[4];
903 /* Contains both the dynamic relocation index and the symbol flags
904 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
905 to access the individual values. The dynamic relocation index
906 identifies the first entry in the .rel.dyn section that
907 references the dynamic symbol corresponding to this msym entry.
908 If the index is 0, no dynamic relocations are associated with the
909 symbol. The symbol flags field is reserved for future use. */
910 unsigned char ms_info[4];
911 } Elf32_External_Msym;
915 /* The hash value computed from the name of the corresponding
917 unsigned long ms_hash_value;
918 /* Contains both the dynamic relocation index and the symbol flags
919 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
920 to access the individual values. The dynamic relocation index
921 identifies the first entry in the .rel.dyn section that
922 references the dynamic symbol corresponding to this msym entry.
923 If the index is 0, no dynamic relocations are associated with the
924 symbol. The symbol flags field is reserved for future use. */
925 unsigned long ms_info;
926 } Elf32_Internal_Msym;
928 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
929 #define ELF32_MS_FLAGS(i) (i) & 0xff)
930 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
932 /* MIPS ELF reginfo swapping routines. */
933 extern void bfd_mips_elf64_swap_reginfo_in
934 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
935 extern void bfd_mips_elf64_swap_reginfo_out
936 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
938 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
939 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
940 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
941 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
942 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
943 #define OEX_FPDBUG 0x40000 /* Force precise floating-point
944 exceptions (debug mode). */
945 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
947 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
948 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
949 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
950 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
951 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
952 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
954 /* Masks for the info word of an ODK_PAD descriptor. */
955 #define OPAD_PREFIX 0x01
956 #define OPAD_POSTFIX 0x02
957 #define OPAD_SYMBOL 0x04
959 /* Masks for the info word of an ODK_HWPATCH descriptor. */
960 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */
961 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */
962 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */
963 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug
965 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned
968 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
969 #define OGP_GROUP 0x0000ffff /* GP group number. */
970 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
972 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
973 #define OHWA0_R4KEOP_CHECKED 0x00000001
974 #define OHWA0_R4KEOP_CLEAN 0x00000002
977 #endif /* _ELF_MIPS_H */