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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 RELOC_NUMBER (R_MIPS_GLOB_DAT
, 51)
91 FAKE_RELOC (R_MIPS_max
, 52)
92 /* These relocs are used for the mips16. */
93 FAKE_RELOC (R_MIPS16_min
, 100)
94 RELOC_NUMBER (R_MIPS16_26
, 100)
95 RELOC_NUMBER (R_MIPS16_GPREL
, 101)
96 RELOC_NUMBER (R_MIPS16_GOT16
, 102)
97 RELOC_NUMBER (R_MIPS16_CALL16
, 103)
98 RELOC_NUMBER (R_MIPS16_HI16
, 104)
99 RELOC_NUMBER (R_MIPS16_LO16
, 105)
100 FAKE_RELOC (R_MIPS16_max
, 106)
101 /* These relocations are specific to VxWorks. */
102 RELOC_NUMBER (R_MIPS_COPY
, 126)
103 RELOC_NUMBER (R_MIPS_JUMP_SLOT
, 127)
104 /* This was a GNU extension used by embedded-PIC. It was co-opted by
105 mips-linux for exception-handling data. It is no longer used, but
106 should continue to be supported by the linker for backward
107 compatibility. (GCC stopped using it in May, 2004.) */
108 RELOC_NUMBER (R_MIPS_PC32
, 248)
109 /* FIXME: this relocation is used internally by gas. */
110 RELOC_NUMBER (R_MIPS_GNU_REL16_S2
, 250)
111 /* These are GNU extensions to enable C++ vtable garbage collection. */
112 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT
, 253)
113 RELOC_NUMBER (R_MIPS_GNU_VTENTRY
, 254)
114 END_RELOC_NUMBERS (R_MIPS_maxext
)
116 /* Processor specific flags for the ELF header e_flags field. */
118 /* At least one .noreorder directive appears in the source. */
119 #define EF_MIPS_NOREORDER 0x00000001
121 /* File contains position independent code. */
122 #define EF_MIPS_PIC 0x00000002
124 /* Code in file uses the standard calling sequence for calling
125 position independent code. */
126 #define EF_MIPS_CPIC 0x00000004
128 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */
129 #define EF_MIPS_XGOT 0x00000008
131 /* Code in file uses UCODE (obsolete) */
132 #define EF_MIPS_UCODE 0x00000010
134 /* Code in file uses new ABI (-n32 on Irix 6). */
135 #define EF_MIPS_ABI2 0x00000020
137 /* Process the .MIPS.options section first by ld */
138 #define EF_MIPS_OPTIONS_FIRST 0x00000080
140 /* Architectural Extensions used by this file */
141 #define EF_MIPS_ARCH_ASE 0x0f000000
143 /* Use MDMX multimedia extensions */
144 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000
146 /* Use MIPS-16 ISA extensions */
147 #define EF_MIPS_ARCH_ASE_M16 0x04000000
149 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
150 (regs are 32-bits wide.) */
151 #define EF_MIPS_32BITMODE 0x00000100
153 /* Four bit MIPS architecture field. */
154 #define EF_MIPS_ARCH 0xf0000000
157 #define E_MIPS_ARCH_1 0x00000000
160 #define E_MIPS_ARCH_2 0x10000000
163 #define E_MIPS_ARCH_3 0x20000000
166 #define E_MIPS_ARCH_4 0x30000000
169 #define E_MIPS_ARCH_5 0x40000000
172 #define E_MIPS_ARCH_32 0x50000000
175 #define E_MIPS_ARCH_64 0x60000000
177 /* -mips32r2 code. */
178 #define E_MIPS_ARCH_32R2 0x70000000
180 /* -mips64r2 code. */
181 #define E_MIPS_ARCH_64R2 0x80000000
183 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */
184 #define EF_MIPS_ABI 0x0000F000
186 /* The original o32 abi. */
187 #define E_MIPS_ABI_O32 0x00001000
189 /* O32 extended to work on 64 bit architectures */
190 #define E_MIPS_ABI_O64 0x00002000
192 /* EABI in 32 bit mode */
193 #define E_MIPS_ABI_EABI32 0x00003000
195 /* EABI in 64 bit mode */
196 #define E_MIPS_ABI_EABI64 0x00004000
199 /* Machine variant if we know it. This field was invented at Cygnus,
200 but it is hoped that other vendors will adopt it. If some standard
201 is developed, this code should be changed to follow it. */
203 #define EF_MIPS_MACH 0x00FF0000
205 /* Cygnus is choosing values between 80 and 9F;
206 00 - 7F should be left for a future standard;
207 the rest are open. */
209 #define E_MIPS_MACH_3900 0x00810000
210 #define E_MIPS_MACH_4010 0x00820000
211 #define E_MIPS_MACH_4100 0x00830000
212 #define E_MIPS_MACH_4650 0x00850000
213 #define E_MIPS_MACH_4120 0x00870000
214 #define E_MIPS_MACH_4111 0x00880000
215 #define E_MIPS_MACH_SB1 0x008a0000
216 #define E_MIPS_MACH_OCTEON 0x008b0000
217 #define E_MIPS_MACH_5400 0x00910000
218 #define E_MIPS_MACH_5500 0x00980000
219 #define E_MIPS_MACH_9000 0x00990000
220 #define E_MIPS_MACH_LS2E 0x00A00000
221 #define E_MIPS_MACH_LS2F 0x00A10000
223 /* Processor specific section indices. These sections do not actually
224 exist. Symbols with a st_shndx field corresponding to one of these
225 values have a special meaning. */
227 /* Defined and allocated common symbol. Value is virtual address. If
228 relocated, alignment must be preserved. */
229 #define SHN_MIPS_ACOMMON SHN_LORESERVE
231 /* Defined and allocated text symbol. Value is virtual address.
232 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
233 #define SHN_MIPS_TEXT (SHN_LORESERVE + 1)
235 /* Defined and allocated data symbol. Value is virtual address.
236 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
237 #define SHN_MIPS_DATA (SHN_LORESERVE + 2)
239 /* Small common symbol. */
240 #define SHN_MIPS_SCOMMON (SHN_LORESERVE + 3)
242 /* Small undefined symbol. */
243 #define SHN_MIPS_SUNDEFINED (SHN_LORESERVE + 4)
245 /* Processor specific section types. */
247 /* Section contains the set of dynamic shared objects used when
248 statically linking. */
249 #define SHT_MIPS_LIBLIST 0x70000000
251 /* I'm not sure what this is, but it's used on Irix 5. */
252 #define SHT_MIPS_MSYM 0x70000001
254 /* Section contains list of symbols whose definitions conflict with
255 symbols defined in shared objects. */
256 #define SHT_MIPS_CONFLICT 0x70000002
258 /* Section contains the global pointer table. */
259 #define SHT_MIPS_GPTAB 0x70000003
261 /* Section contains microcode information. The exact format is
263 #define SHT_MIPS_UCODE 0x70000004
265 /* Section contains some sort of debugging information. The exact
266 format is unspecified. It's probably ECOFF symbols. */
267 #define SHT_MIPS_DEBUG 0x70000005
269 /* Section contains register usage information. */
270 #define SHT_MIPS_REGINFO 0x70000006
273 #define SHT_MIPS_PACKAGE 0x70000007
276 #define SHT_MIPS_PACKSYM 0x70000008
279 #define SHT_MIPS_RELD 0x70000009
281 /* Section contains interface information. */
282 #define SHT_MIPS_IFACE 0x7000000b
284 /* Section contains description of contents of another section. */
285 #define SHT_MIPS_CONTENT 0x7000000c
287 /* Section contains miscellaneous options. */
288 #define SHT_MIPS_OPTIONS 0x7000000d
291 #define SHT_MIPS_SHDR 0x70000010
294 #define SHT_MIPS_FDESC 0x70000011
297 #define SHT_MIPS_EXTSYM 0x70000012
300 #define SHT_MIPS_DENSE 0x70000013
303 #define SHT_MIPS_PDESC 0x70000014
306 #define SHT_MIPS_LOCSYM 0x70000015
309 #define SHT_MIPS_AUXSYM 0x70000016
312 #define SHT_MIPS_OPTSYM 0x70000017
315 #define SHT_MIPS_LOCSTR 0x70000018
318 #define SHT_MIPS_LINE 0x70000019
321 #define SHT_MIPS_RFDESC 0x7000001a
323 /* Delta C++: symbol table */
324 #define SHT_MIPS_DELTASYM 0x7000001b
326 /* Delta C++: instance table */
327 #define SHT_MIPS_DELTAINST 0x7000001c
329 /* Delta C++: class table */
330 #define SHT_MIPS_DELTACLASS 0x7000001d
332 /* DWARF debugging section. */
333 #define SHT_MIPS_DWARF 0x7000001e
335 /* Delta C++: declarations */
336 #define SHT_MIPS_DELTADECL 0x7000001f
338 /* List of libraries the binary depends on. Includes a time stamp, version
340 #define SHT_MIPS_SYMBOL_LIB 0x70000020
342 /* Events section. */
343 #define SHT_MIPS_EVENTS 0x70000021
346 #define SHT_MIPS_TRANSLATE 0x70000022
348 /* Special pixie sections */
349 #define SHT_MIPS_PIXIE 0x70000023
351 /* Address translation table (for debug info) */
352 #define SHT_MIPS_XLATE 0x70000024
354 /* SGI internal address translation table (for debug info) */
355 #define SHT_MIPS_XLATE_DEBUG 0x70000025
357 /* Intermediate code */
358 #define SHT_MIPS_WHIRL 0x70000026
360 /* C++ exception handling region info */
361 #define SHT_MIPS_EH_REGION 0x70000027
363 /* Obsolete address translation table (for debug info) */
364 #define SHT_MIPS_XLATE_OLD 0x70000028
366 /* Runtime procedure descriptor table exception information (ucode) ??? */
367 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
370 /* A section of type SHT_MIPS_LIBLIST contains an array of the
371 following structure. The sh_link field is the section index of the
372 string table. The sh_info field is the number of entries in the
376 /* String table index for name of shared object. */
377 unsigned long l_name
;
379 unsigned long l_time_stamp
;
380 /* Checksum of symbol names and common sizes. */
381 unsigned long l_checksum
;
382 /* String table index for version. */
383 unsigned long l_version
;
385 unsigned long l_flags
;
388 /* The external version of Elf32_Lib. */
391 unsigned char l_name
[4];
392 unsigned char l_time_stamp
[4];
393 unsigned char l_checksum
[4];
394 unsigned char l_version
[4];
395 unsigned char l_flags
[4];
396 } Elf32_External_Lib
;
398 /* The l_flags field of an Elf32_Lib structure may contain the
401 /* Require an exact match at runtime. */
402 #define LL_EXACT_MATCH 0x00000001
404 /* Ignore version incompatibilities at runtime. */
405 #define LL_IGNORE_INT_VER 0x00000002
407 /* Require matching minor version number. */
408 #define LL_REQUIRE_MINOR 0x00000004
411 #define LL_EXPORTS 0x00000008
413 /* Delay loading of this library until really needed. */
414 #define LL_DELAY_LOAD 0x00000010
416 /* ??? Delta C++ stuff ??? */
417 #define LL_DELTA 0x00000020
420 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
421 .dynsym section. Each element has the following type. */
422 typedef unsigned long Elf32_Conflict
;
423 typedef unsigned char Elf32_External_Conflict
[4];
425 typedef unsigned long Elf64_Conflict
;
426 typedef unsigned char Elf64_External_Conflict
[8];
428 /* A section of type SHT_MIPS_GPTAB contains information about how
429 much GP space would be required for different -G arguments. This
430 information is only used so that the linker can provide informative
431 suggestions as to the best -G value to use. The sh_info field is
432 the index of the section for which this information applies. The
433 contents of the section are an array of the following union. The
434 first element uses the gt_header field. The remaining elements use
435 the gt_entry field. */
440 /* -G value actually used for this object file. */
441 unsigned long gt_current_g_value
;
443 unsigned long gt_unused
;
447 /* If this -G argument has been used... */
448 unsigned long gt_g_value
;
449 /* ...this many GP section bytes would be required. */
450 unsigned long gt_bytes
;
454 /* The external version of Elf32_gptab. */
460 unsigned char gt_current_g_value
[4];
461 unsigned char gt_unused
[4];
465 unsigned char gt_g_value
[4];
466 unsigned char gt_bytes
[4];
468 } Elf32_External_gptab
;
470 /* A section of type SHT_MIPS_REGINFO contains the following
474 /* Mask of general purpose registers used. */
475 unsigned long ri_gprmask
;
476 /* Mask of co-processor registers used. */
477 unsigned long ri_cprmask
[4];
478 /* GP register value for this object file. */
482 /* The external version of the Elf_RegInfo structure. */
485 unsigned char ri_gprmask
[4];
486 unsigned char ri_cprmask
[4][4];
487 unsigned char ri_gp_value
[4];
488 } Elf32_External_RegInfo
;
490 /* MIPS ELF .reginfo swapping routines. */
491 extern void bfd_mips_elf32_swap_reginfo_in
492 (bfd
*, const Elf32_External_RegInfo
*, Elf32_RegInfo
*);
493 extern void bfd_mips_elf32_swap_reginfo_out
494 (bfd
*, const Elf32_RegInfo
*, Elf32_External_RegInfo
*);
496 /* Processor specific section flags. */
498 /* This section must be in the global data area. */
499 #define SHF_MIPS_GPREL 0x10000000
501 /* This section should be merged. */
502 #define SHF_MIPS_MERGE 0x20000000
504 /* This section contains address data of size implied by section
506 #define SHF_MIPS_ADDR 0x40000000
508 /* This section contains string data. */
509 #define SHF_MIPS_STRING 0x80000000
511 /* This section may not be stripped. */
512 #define SHF_MIPS_NOSTRIP 0x08000000
514 /* This section is local to threads. */
515 #define SHF_MIPS_LOCAL 0x04000000
517 /* Linker should generate implicit weak names for this section. */
518 #define SHF_MIPS_NAMES 0x02000000
520 /* Section contais text/data which may be replicated in other sections.
521 Linker should retain only one copy. */
522 #define SHF_MIPS_NODUPES 0x01000000
524 /* Processor specific program header types. */
526 /* Register usage information. Identifies one .reginfo section. */
527 #define PT_MIPS_REGINFO 0x70000000
529 /* Runtime procedure table. */
530 #define PT_MIPS_RTPROC 0x70000001
532 /* .MIPS.options section. */
533 #define PT_MIPS_OPTIONS 0x70000002
535 /* Processor specific dynamic array tags. */
537 /* 32 bit version number for runtime linker interface. */
538 #define DT_MIPS_RLD_VERSION 0x70000001
541 #define DT_MIPS_TIME_STAMP 0x70000002
543 /* Checksum of external strings and common sizes. */
544 #define DT_MIPS_ICHECKSUM 0x70000003
546 /* Index of version string in string table. */
547 #define DT_MIPS_IVERSION 0x70000004
549 /* 32 bits of flags. */
550 #define DT_MIPS_FLAGS 0x70000005
552 /* Base address of the segment. */
553 #define DT_MIPS_BASE_ADDRESS 0x70000006
556 #define DT_MIPS_MSYM 0x70000007
558 /* Address of .conflict section. */
559 #define DT_MIPS_CONFLICT 0x70000008
561 /* Address of .liblist section. */
562 #define DT_MIPS_LIBLIST 0x70000009
564 /* Number of local global offset table entries. */
565 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
567 /* Number of entries in the .conflict section. */
568 #define DT_MIPS_CONFLICTNO 0x7000000b
570 /* Number of entries in the .liblist section. */
571 #define DT_MIPS_LIBLISTNO 0x70000010
573 /* Number of entries in the .dynsym section. */
574 #define DT_MIPS_SYMTABNO 0x70000011
576 /* Index of first external dynamic symbol not referenced locally. */
577 #define DT_MIPS_UNREFEXTNO 0x70000012
579 /* Index of first dynamic symbol in global offset table. */
580 #define DT_MIPS_GOTSYM 0x70000013
582 /* Number of page table entries in global offset table. */
583 #define DT_MIPS_HIPAGENO 0x70000014
585 /* Address of run time loader map, used for debugging. */
586 #define DT_MIPS_RLD_MAP 0x70000016
588 /* Delta C++ class definition. */
589 #define DT_MIPS_DELTA_CLASS 0x70000017
591 /* Number of entries in DT_MIPS_DELTA_CLASS. */
592 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
594 /* Delta C++ class instances. */
595 #define DT_MIPS_DELTA_INSTANCE 0x70000019
597 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
598 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
600 /* Delta relocations. */
601 #define DT_MIPS_DELTA_RELOC 0x7000001b
603 /* Number of entries in DT_MIPS_DELTA_RELOC. */
604 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
606 /* Delta symbols that Delta relocations refer to. */
607 #define DT_MIPS_DELTA_SYM 0x7000001d
609 /* Number of entries in DT_MIPS_DELTA_SYM. */
610 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
612 /* Delta symbols that hold class declarations. */
613 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
615 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
616 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
618 /* Flags indicating information about C++ flavor. */
619 #define DT_MIPS_CXX_FLAGS 0x70000022
621 /* Pixie information (???). */
622 #define DT_MIPS_PIXIE_INIT 0x70000023
624 /* Address of .MIPS.symlib */
625 #define DT_MIPS_SYMBOL_LIB 0x70000024
627 /* The GOT index of the first PTE for a segment */
628 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
630 /* The GOT index of the first PTE for a local symbol */
631 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
633 /* The GOT index of the first PTE for a hidden symbol */
634 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
636 /* The GOT index of the first PTE for a protected symbol */
637 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
639 /* Address of `.MIPS.options'. */
640 #define DT_MIPS_OPTIONS 0x70000029
642 /* Address of `.interface'. */
643 #define DT_MIPS_INTERFACE 0x7000002a
646 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
648 /* Size of the .interface section. */
649 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
651 /* Size of rld_text_resolve function stored in the GOT. */
652 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
654 /* Default suffix of DSO to be added by rld on dlopen() calls. */
655 #define DT_MIPS_PERF_SUFFIX 0x7000002e
657 /* Size of compact relocation section (O32). */
658 #define DT_MIPS_COMPACT_SIZE 0x7000002f
660 /* GP value for auxiliary GOTs. */
661 #define DT_MIPS_GP_VALUE 0x70000030
663 /* Address of auxiliary .dynamic. */
664 #define DT_MIPS_AUX_DYNAMIC 0x70000031
666 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
669 #define RHF_NONE 0x00000000
671 /* Uses shortcut pointers. */
672 #define RHF_QUICKSTART 0x00000001
674 /* Hash size is not a power of two. */
675 #define RHF_NOTPOT 0x00000002
677 /* Ignore LD_LIBRARY_PATH. */
678 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
680 /* DSO address may not be relocated. */
681 #define RHF_NO_MOVE 0x00000008
683 /* SGI specific features. */
684 #define RHF_SGI_ONLY 0x00000010
686 /* Guarantee that .init will finish executing before any non-init
687 code in DSO is called. */
688 #define RHF_GUARANTEE_INIT 0x00000020
690 /* Contains Delta C++ code. */
691 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
693 /* Guarantee that .init will start executing before any non-init
694 code in DSO is called. */
695 #define RHF_GUARANTEE_START_INIT 0x00000080
697 /* Generated by pixie. */
698 #define RHF_PIXIE 0x00000100
700 /* Delay-load DSO by default. */
701 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
703 /* Object may be requickstarted */
704 #define RHF_REQUICKSTART 0x00000400
706 /* Object has been requickstarted */
707 #define RHF_REQUICKSTARTED 0x00000800
709 /* Generated by cord. */
710 #define RHF_CORD 0x00001000
712 /* Object contains no unresolved undef symbols. */
713 #define RHF_NO_UNRES_UNDEF 0x00002000
715 /* Symbol table is in a safe order. */
716 #define RHF_RLD_ORDER_SAFE 0x00004000
718 /* Special values for the st_other field in the symbol table. These
719 are used in an Irix 5 dynamic symbol table. */
721 #define STO_DEFAULT STV_DEFAULT
722 #define STO_INTERNAL STV_INTERNAL
723 #define STO_HIDDEN STV_HIDDEN
724 #define STO_PROTECTED STV_PROTECTED
726 /* This value is used for a mips16 .text symbol. */
727 #define STO_MIPS16 0xf0
729 /* This bit is used on Irix to indicate a symbol whose definition
730 is optional - if, at final link time, it cannot be found, no
731 error message should be produced. */
732 #define STO_OPTIONAL (1 << 2)
733 /* A macro to examine the STO_OPTIONAL bit. */
734 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL)
736 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
737 relocation entry specifies up to three actual relocations, all at
738 the same address. The first relocation which required a symbol
739 uses the symbol in the r_sym field. The second relocation which
740 requires a symbol uses the symbol in the r_ssym field. If all
741 three relocations require a symbol, the third one uses a zero
744 /* An entry in a 64 bit SHT_REL section. */
748 /* Address of relocation. */
749 unsigned char r_offset
[8];
751 unsigned char r_sym
[4];
752 /* Special symbol. */
753 unsigned char r_ssym
[1];
754 /* Third relocation. */
755 unsigned char r_type3
[1];
756 /* Second relocation. */
757 unsigned char r_type2
[1];
758 /* First relocation. */
759 unsigned char r_type
[1];
760 } Elf64_Mips_External_Rel
;
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
;
776 } Elf64_Mips_Internal_Rel
;
778 /* An entry in a 64 bit SHT_RELA section. */
782 /* Address of relocation. */
783 unsigned char r_offset
[8];
785 unsigned char r_sym
[4];
786 /* Special symbol. */
787 unsigned char r_ssym
[1];
788 /* Third relocation. */
789 unsigned char r_type3
[1];
790 /* Second relocation. */
791 unsigned char r_type2
[1];
792 /* First relocation. */
793 unsigned char r_type
[1];
795 unsigned char r_addend
[8];
796 } Elf64_Mips_External_Rela
;
800 /* Address of relocation. */
804 /* Special symbol. */
805 unsigned char r_ssym
;
806 /* Third relocation. */
807 unsigned char r_type3
;
808 /* Second relocation. */
809 unsigned char r_type2
;
810 /* First relocation. */
811 unsigned char r_type
;
813 bfd_signed_vma r_addend
;
814 } Elf64_Mips_Internal_Rela
;
816 /* MIPS ELF 64 relocation info access macros. */
817 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
818 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
819 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
820 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
822 /* Values found in the r_ssym field of a relocation entry. */
830 /* Value of GP in object being relocated. */
833 /* Address of location being relocated. */
836 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
837 which starts with this header. */
841 /* Type of option. */
842 unsigned char kind
[1];
843 /* Size of option descriptor, including header. */
844 unsigned char size
[1];
845 /* Section index of affected section, or 0 for global option. */
846 unsigned char section
[2];
847 /* Information specific to this kind of option. */
848 unsigned char info
[4];
849 } Elf_External_Options
;
853 /* Type of option. */
855 /* Size of option descriptor, including header. */
857 /* Section index of affected section, or 0 for global option. */
858 unsigned short section
;
859 /* Information specific to this kind of option. */
861 } Elf_Internal_Options
;
863 /* MIPS ELF option header swapping routines. */
864 extern void bfd_mips_elf_swap_options_in
865 (bfd
*, const Elf_External_Options
*, Elf_Internal_Options
*);
866 extern void bfd_mips_elf_swap_options_out
867 (bfd
*, const Elf_Internal_Options
*, Elf_External_Options
*);
869 /* Values which may appear in the kind field of an Elf_Options
875 /* Register usage and GP value. */
876 #define ODK_REGINFO 1
878 /* Exception processing information. */
879 #define ODK_EXCEPTIONS 2
881 /* Section padding information. */
884 /* Hardware workarounds performed. */
885 #define ODK_HWPATCH 4
887 /* Fill value used by the linker. */
890 /* Reserved space for desktop tools. */
893 /* Hardware workarounds, AND bits when merging. */
896 /* Hardware workarounds, OR bits when merging. */
899 /* GP group to use for text/data sections. */
900 #define ODK_GP_GROUP 9
902 /* ID information. */
905 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
906 structure. In the 64 bit ABI, it is the following structure. The
907 info field of the options header is not used. */
911 /* Mask of general purpose registers used. */
912 unsigned char ri_gprmask
[4];
914 unsigned char ri_pad
[4];
915 /* Mask of co-processor registers used. */
916 unsigned char ri_cprmask
[4][4];
917 /* GP register value for this object file. */
918 unsigned char ri_gp_value
[8];
919 } Elf64_External_RegInfo
;
923 /* Mask of general purpose registers used. */
924 unsigned long ri_gprmask
;
926 unsigned long ri_pad
;
927 /* Mask of co-processor registers used. */
928 unsigned long ri_cprmask
[4];
929 /* GP register value for this object file. */
931 } Elf64_Internal_RegInfo
;
935 /* The hash value computed from the name of the corresponding
937 unsigned char ms_hash_value
[4];
938 /* Contains both the dynamic relocation index and the symbol flags
939 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
940 to access the individual values. The dynamic relocation index
941 identifies the first entry in the .rel.dyn section that
942 references the dynamic symbol corresponding to this msym entry.
943 If the index is 0, no dynamic relocations are associated with the
944 symbol. The symbol flags field is reserved for future use. */
945 unsigned char ms_info
[4];
946 } Elf32_External_Msym
;
950 /* The hash value computed from the name of the corresponding
952 unsigned long ms_hash_value
;
953 /* Contains both the dynamic relocation index and the symbol flags
954 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
955 to access the individual values. The dynamic relocation index
956 identifies the first entry in the .rel.dyn section that
957 references the dynamic symbol corresponding to this msym entry.
958 If the index is 0, no dynamic relocations are associated with the
959 symbol. The symbol flags field is reserved for future use. */
960 unsigned long ms_info
;
961 } Elf32_Internal_Msym
;
963 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
964 #define ELF32_MS_FLAGS(i) (i) & 0xff)
965 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
967 /* MIPS ELF reginfo swapping routines. */
968 extern void bfd_mips_elf64_swap_reginfo_in
969 (bfd
*, const Elf64_External_RegInfo
*, Elf64_Internal_RegInfo
*);
970 extern void bfd_mips_elf64_swap_reginfo_out
971 (bfd
*, const Elf64_Internal_RegInfo
*, Elf64_External_RegInfo
*);
973 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
974 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
975 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
976 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
977 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
978 #define OEX_FPDBUG 0x40000 /* Force precise floating-point
979 exceptions (debug mode). */
980 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
982 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
983 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
984 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
985 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
986 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
987 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
989 /* Masks for the info word of an ODK_PAD descriptor. */
990 #define OPAD_PREFIX 0x01
991 #define OPAD_POSTFIX 0x02
992 #define OPAD_SYMBOL 0x04
994 /* Masks for the info word of an ODK_HWPATCH descriptor. */
995 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */
996 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */
997 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */
998 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug
1000 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned
1003 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
1004 #define OGP_GROUP 0x0000ffff /* GP group number. */
1005 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
1007 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
1008 #define OHWA0_R4KEOP_CHECKED 0x00000001
1009 #define OHWA0_R4KEOP_CLEAN 0x00000002
1012 /* Object attribute tags. */
1015 /* 0-3 are generic. */
1016 Tag_GNU_MIPS_ABI_FP
= 4, /* Value 1 for hard-float -mdouble-float, 2
1017 for hard-float -msingle-float, 3 for
1018 soft-float, 4 for -mips32r2 -mfp64; 0 for
1019 not tagged or not using any ABIs affected
1020 by the differences. */
1023 #endif /* _ELF_MIPS_H */