1 /* MIPS ELF support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2008, 2009, 2010, 2013
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 3 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,
25 MA 02110-1301, USA. */
27 /* This file holds definitions specific to the MIPS ELF ABI. Note
28 that most of this is not actually implemented by BFD. */
33 #include "elf/reloc-macros.h"
35 /* Relocation types. */
36 START_RELOC_NUMBERS (elf_mips_reloc_type)
37 RELOC_NUMBER (R_MIPS_NONE, 0)
38 RELOC_NUMBER (R_MIPS_16, 1)
39 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */
40 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */
41 RELOC_NUMBER (R_MIPS_26, 4)
42 RELOC_NUMBER (R_MIPS_HI16, 5)
43 RELOC_NUMBER (R_MIPS_LO16, 6)
44 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */
45 RELOC_NUMBER (R_MIPS_LITERAL, 8)
46 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */
47 RELOC_NUMBER (R_MIPS_PC16, 10)
48 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */
49 RELOC_NUMBER (R_MIPS_GPREL32, 12)
50 /* The remaining relocs are defined on Irix, although they are not
51 in the MIPS ELF ABI. */
52 RELOC_NUMBER (R_MIPS_UNUSED1, 13)
53 RELOC_NUMBER (R_MIPS_UNUSED2, 14)
54 RELOC_NUMBER (R_MIPS_UNUSED3, 15)
55 RELOC_NUMBER (R_MIPS_SHIFT5, 16)
56 RELOC_NUMBER (R_MIPS_SHIFT6, 17)
57 RELOC_NUMBER (R_MIPS_64, 18)
58 RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
59 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
60 RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
61 RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
62 RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
63 RELOC_NUMBER (R_MIPS_SUB, 24)
64 RELOC_NUMBER (R_MIPS_INSERT_A, 25)
65 RELOC_NUMBER (R_MIPS_INSERT_B, 26)
66 RELOC_NUMBER (R_MIPS_DELETE, 27)
67 RELOC_NUMBER (R_MIPS_HIGHER, 28)
68 RELOC_NUMBER (R_MIPS_HIGHEST, 29)
69 RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
70 RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
71 RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
72 RELOC_NUMBER (R_MIPS_REL16, 33)
73 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
74 RELOC_NUMBER (R_MIPS_PJUMP, 35)
75 RELOC_NUMBER (R_MIPS_RELGOT, 36)
76 RELOC_NUMBER (R_MIPS_JALR, 37)
77 /* TLS relocations. */
78 RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
79 RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
80 RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
81 RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
82 RELOC_NUMBER (R_MIPS_TLS_GD, 42)
83 RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
84 RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
85 RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
86 RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
87 RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
88 RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
89 RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
90 RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
91 RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
92 FAKE_RELOC (R_MIPS_max, 52)
93 /* These relocs are used for the mips16. */
94 FAKE_RELOC (R_MIPS16_min, 100)
95 RELOC_NUMBER (R_MIPS16_26, 100)
96 RELOC_NUMBER (R_MIPS16_GPREL, 101)
97 RELOC_NUMBER (R_MIPS16_GOT16, 102)
98 RELOC_NUMBER (R_MIPS16_CALL16, 103)
99 RELOC_NUMBER (R_MIPS16_HI16, 104)
100 RELOC_NUMBER (R_MIPS16_LO16, 105)
101 RELOC_NUMBER (R_MIPS16_TLS_GD, 106)
102 RELOC_NUMBER (R_MIPS16_TLS_LDM, 107)
103 RELOC_NUMBER (R_MIPS16_TLS_DTPREL_HI16, 108)
104 RELOC_NUMBER (R_MIPS16_TLS_DTPREL_LO16, 109)
105 RELOC_NUMBER (R_MIPS16_TLS_GOTTPREL, 110)
106 RELOC_NUMBER (R_MIPS16_TLS_TPREL_HI16, 111)
107 RELOC_NUMBER (R_MIPS16_TLS_TPREL_LO16, 112)
108 FAKE_RELOC (R_MIPS16_max, 113)
109 /* These relocations are specific to VxWorks. */
110 RELOC_NUMBER (R_MIPS_COPY, 126)
111 RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
113 /* These relocations are specific to microMIPS. */
114 FAKE_RELOC (R_MICROMIPS_min, 130)
115 RELOC_NUMBER (R_MICROMIPS_26_S1, 133)
116 RELOC_NUMBER (R_MICROMIPS_HI16, 134)
117 RELOC_NUMBER (R_MICROMIPS_LO16, 135)
118 RELOC_NUMBER (R_MICROMIPS_GPREL16, 136) /* In Elf 64:
119 alias R_MICROMIPS_GPREL */
120 RELOC_NUMBER (R_MICROMIPS_LITERAL, 137)
121 RELOC_NUMBER (R_MICROMIPS_GOT16, 138) /* In Elf 64:
122 alias R_MICROMIPS_GOT */
123 RELOC_NUMBER (R_MICROMIPS_PC7_S1, 139)
124 RELOC_NUMBER (R_MICROMIPS_PC10_S1, 140)
125 RELOC_NUMBER (R_MICROMIPS_PC16_S1, 141)
126 RELOC_NUMBER (R_MICROMIPS_CALL16, 142) /* In Elf 64:
127 alias R_MICROMIPS_CALL */
128 RELOC_NUMBER (R_MICROMIPS_GOT_DISP, 145)
129 RELOC_NUMBER (R_MICROMIPS_GOT_PAGE, 146)
130 RELOC_NUMBER (R_MICROMIPS_GOT_OFST, 147)
131 RELOC_NUMBER (R_MICROMIPS_GOT_HI16, 148)
132 RELOC_NUMBER (R_MICROMIPS_GOT_LO16, 149)
133 RELOC_NUMBER (R_MICROMIPS_SUB, 150)
134 RELOC_NUMBER (R_MICROMIPS_HIGHER, 151)
135 RELOC_NUMBER (R_MICROMIPS_HIGHEST, 152)
136 RELOC_NUMBER (R_MICROMIPS_CALL_HI16, 153)
137 RELOC_NUMBER (R_MICROMIPS_CALL_LO16, 154)
138 RELOC_NUMBER (R_MICROMIPS_SCN_DISP, 155)
139 RELOC_NUMBER (R_MICROMIPS_JALR, 156)
140 RELOC_NUMBER (R_MICROMIPS_HI0_LO16, 157)
141 /* TLS relocations. */
142 RELOC_NUMBER (R_MICROMIPS_TLS_GD, 162)
143 RELOC_NUMBER (R_MICROMIPS_TLS_LDM, 163)
144 RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_HI16, 164)
145 RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_LO16, 165)
146 RELOC_NUMBER (R_MICROMIPS_TLS_GOTTPREL, 166)
147 RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_HI16, 169)
148 RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_LO16, 170)
149 /* microMIPS GP- and PC-relative relocations. */
150 RELOC_NUMBER (R_MICROMIPS_GPREL7_S2, 172)
151 RELOC_NUMBER (R_MICROMIPS_PC23_S2, 173)
152 FAKE_RELOC (R_MICROMIPS_max, 174)
154 /* This was a GNU extension used by embedded-PIC. It was co-opted by
155 mips-linux for exception-handling data. GCC stopped using it in
156 May, 2004, then started using it again for compact unwind tables. */
157 RELOC_NUMBER (R_MIPS_PC32, 248)
158 RELOC_NUMBER (R_MIPS_EH, 249)
159 /* FIXME: this relocation is used internally by gas. */
160 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
161 /* These are GNU extensions to enable C++ vtable garbage collection. */
162 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
163 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
164 END_RELOC_NUMBERS (R_MIPS_maxext)
166 /* Processor specific flags for the ELF header e_flags field. */
168 /* At least one .noreorder directive appears in the source. */
169 #define EF_MIPS_NOREORDER 0x00000001
171 /* File contains position independent code. */
172 #define EF_MIPS_PIC 0x00000002
174 /* Code in file uses the standard calling sequence for calling
175 position independent code. */
176 #define EF_MIPS_CPIC 0x00000004
178 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */
179 #define EF_MIPS_XGOT 0x00000008
181 /* Code in file uses UCODE (obsolete) */
182 #define EF_MIPS_UCODE 0x00000010
184 /* Code in file uses new ABI (-n32 on Irix 6). */
185 #define EF_MIPS_ABI2 0x00000020
187 /* Process the .MIPS.options section first by ld */
188 #define EF_MIPS_OPTIONS_FIRST 0x00000080
190 /* Indicates code compiled for a 64-bit machine in 32-bit mode
191 (regs are 32-bits wide). */
192 #define EF_MIPS_32BITMODE 0x00000100
194 /* Code in file uses the IEEE 754-2008 NaN encoding convention. */
195 #define EF_MIPS_NAN2008 0x00000400
197 /* Architectural Extensions used by this file */
198 #define EF_MIPS_ARCH_ASE 0x0f000000
200 /* Use MDMX multimedia extensions */
201 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000
203 /* Use MIPS-16 ISA extensions */
204 #define EF_MIPS_ARCH_ASE_M16 0x04000000
206 /* Use MICROMIPS ISA extensions. */
207 #define EF_MIPS_ARCH_ASE_MICROMIPS 0x02000000
209 /* Four bit MIPS architecture field. */
210 #define EF_MIPS_ARCH 0xf0000000
213 #define E_MIPS_ARCH_1 0x00000000
216 #define E_MIPS_ARCH_2 0x10000000
219 #define E_MIPS_ARCH_3 0x20000000
222 #define E_MIPS_ARCH_4 0x30000000
225 #define E_MIPS_ARCH_5 0x40000000
228 #define E_MIPS_ARCH_32 0x50000000
231 #define E_MIPS_ARCH_64 0x60000000
233 /* -mips32r2 code. */
234 #define E_MIPS_ARCH_32R2 0x70000000
236 /* -mips64r2 code. */
237 #define E_MIPS_ARCH_64R2 0x80000000
239 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */
240 #define EF_MIPS_ABI 0x0000F000
242 /* The original o32 abi. */
243 #define E_MIPS_ABI_O32 0x00001000
245 /* O32 extended to work on 64 bit architectures */
246 #define E_MIPS_ABI_O64 0x00002000
248 /* EABI in 32 bit mode */
249 #define E_MIPS_ABI_EABI32 0x00003000
251 /* EABI in 64 bit mode */
252 #define E_MIPS_ABI_EABI64 0x00004000
255 /* Machine variant if we know it. This field was invented at Cygnus,
256 but it is hoped that other vendors will adopt it. If some standard
257 is developed, this code should be changed to follow it. */
259 #define EF_MIPS_MACH 0x00FF0000
261 /* Cygnus is choosing values between 80 and 9F;
262 00 - 7F should be left for a future standard;
263 the rest are open. */
265 #define E_MIPS_MACH_3900 0x00810000
266 #define E_MIPS_MACH_4010 0x00820000
267 #define E_MIPS_MACH_4100 0x00830000
268 #define E_MIPS_MACH_4650 0x00850000
269 #define E_MIPS_MACH_4120 0x00870000
270 #define E_MIPS_MACH_4111 0x00880000
271 #define E_MIPS_MACH_SB1 0x008a0000
272 #define E_MIPS_MACH_OCTEON 0x008b0000
273 #define E_MIPS_MACH_XLR 0x008c0000
274 #define E_MIPS_MACH_OCTEON2 0x008d0000
275 #define E_MIPS_MACH_5400 0x00910000
276 #define E_MIPS_MACH_5900 0x00920000
277 #define E_MIPS_MACH_5500 0x00980000
278 #define E_MIPS_MACH_9000 0x00990000
279 #define E_MIPS_MACH_LS2E 0x00A00000
280 #define E_MIPS_MACH_LS2F 0x00A10000
281 #define E_MIPS_MACH_LS3A 0x00A20000
283 /* Processor specific section indices. These sections do not actually
284 exist. Symbols with a st_shndx field corresponding to one of these
285 values have a special meaning. */
287 /* Defined and allocated common symbol. Value is virtual address. If
288 relocated, alignment must be preserved. */
289 #define SHN_MIPS_ACOMMON SHN_LORESERVE
291 /* Defined and allocated text symbol. Value is virtual address.
292 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
293 #define SHN_MIPS_TEXT (SHN_LORESERVE + 1)
295 /* Defined and allocated data symbol. Value is virtual address.
296 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
297 #define SHN_MIPS_DATA (SHN_LORESERVE + 2)
299 /* Small common symbol. */
300 #define SHN_MIPS_SCOMMON (SHN_LORESERVE + 3)
302 /* Small undefined symbol. */
303 #define SHN_MIPS_SUNDEFINED (SHN_LORESERVE + 4)
305 /* Processor specific section types. */
307 /* Section contains the set of dynamic shared objects used when
308 statically linking. */
309 #define SHT_MIPS_LIBLIST 0x70000000
311 /* I'm not sure what this is, but it's used on Irix 5. */
312 #define SHT_MIPS_MSYM 0x70000001
314 /* Section contains list of symbols whose definitions conflict with
315 symbols defined in shared objects. */
316 #define SHT_MIPS_CONFLICT 0x70000002
318 /* Section contains the global pointer table. */
319 #define SHT_MIPS_GPTAB 0x70000003
321 /* Section contains microcode information. The exact format is
323 #define SHT_MIPS_UCODE 0x70000004
325 /* Section contains some sort of debugging information. The exact
326 format is unspecified. It's probably ECOFF symbols. */
327 #define SHT_MIPS_DEBUG 0x70000005
329 /* Section contains register usage information. */
330 #define SHT_MIPS_REGINFO 0x70000006
333 #define SHT_MIPS_PACKAGE 0x70000007
336 #define SHT_MIPS_PACKSYM 0x70000008
339 #define SHT_MIPS_RELD 0x70000009
341 /* Section contains interface information. */
342 #define SHT_MIPS_IFACE 0x7000000b
344 /* Section contains description of contents of another section. */
345 #define SHT_MIPS_CONTENT 0x7000000c
347 /* Section contains miscellaneous options. */
348 #define SHT_MIPS_OPTIONS 0x7000000d
351 #define SHT_MIPS_SHDR 0x70000010
354 #define SHT_MIPS_FDESC 0x70000011
357 #define SHT_MIPS_EXTSYM 0x70000012
360 #define SHT_MIPS_DENSE 0x70000013
363 #define SHT_MIPS_PDESC 0x70000014
366 #define SHT_MIPS_LOCSYM 0x70000015
369 #define SHT_MIPS_AUXSYM 0x70000016
372 #define SHT_MIPS_OPTSYM 0x70000017
375 #define SHT_MIPS_LOCSTR 0x70000018
378 #define SHT_MIPS_LINE 0x70000019
381 #define SHT_MIPS_RFDESC 0x7000001a
383 /* Delta C++: symbol table */
384 #define SHT_MIPS_DELTASYM 0x7000001b
386 /* Delta C++: instance table */
387 #define SHT_MIPS_DELTAINST 0x7000001c
389 /* Delta C++: class table */
390 #define SHT_MIPS_DELTACLASS 0x7000001d
392 /* DWARF debugging section. */
393 #define SHT_MIPS_DWARF 0x7000001e
395 /* Delta C++: declarations */
396 #define SHT_MIPS_DELTADECL 0x7000001f
398 /* List of libraries the binary depends on. Includes a time stamp, version
400 #define SHT_MIPS_SYMBOL_LIB 0x70000020
402 /* Events section. */
403 #define SHT_MIPS_EVENTS 0x70000021
406 #define SHT_MIPS_TRANSLATE 0x70000022
408 /* Special pixie sections */
409 #define SHT_MIPS_PIXIE 0x70000023
411 /* Address translation table (for debug info) */
412 #define SHT_MIPS_XLATE 0x70000024
414 /* SGI internal address translation table (for debug info) */
415 #define SHT_MIPS_XLATE_DEBUG 0x70000025
417 /* Intermediate code */
418 #define SHT_MIPS_WHIRL 0x70000026
420 /* C++ exception handling region info */
421 #define SHT_MIPS_EH_REGION 0x70000027
423 /* Obsolete address translation table (for debug info) */
424 #define SHT_MIPS_XLATE_OLD 0x70000028
426 /* Runtime procedure descriptor table exception information (ucode) ??? */
427 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
430 /* A section of type SHT_MIPS_LIBLIST contains an array of the
431 following structure. The sh_link field is the section index of the
432 string table. The sh_info field is the number of entries in the
436 /* String table index for name of shared object. */
437 unsigned long l_name;
439 unsigned long l_time_stamp;
440 /* Checksum of symbol names and common sizes. */
441 unsigned long l_checksum;
442 /* String table index for version. */
443 unsigned long l_version;
445 unsigned long l_flags;
448 /* The external version of Elf32_Lib. */
451 unsigned char l_name[4];
452 unsigned char l_time_stamp[4];
453 unsigned char l_checksum[4];
454 unsigned char l_version[4];
455 unsigned char l_flags[4];
456 } Elf32_External_Lib;
458 /* The l_flags field of an Elf32_Lib structure may contain the
461 /* Require an exact match at runtime. */
462 #define LL_EXACT_MATCH 0x00000001
464 /* Ignore version incompatibilities at runtime. */
465 #define LL_IGNORE_INT_VER 0x00000002
467 /* Require matching minor version number. */
468 #define LL_REQUIRE_MINOR 0x00000004
471 #define LL_EXPORTS 0x00000008
473 /* Delay loading of this library until really needed. */
474 #define LL_DELAY_LOAD 0x00000010
476 /* ??? Delta C++ stuff ??? */
477 #define LL_DELTA 0x00000020
480 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
481 .dynsym section. Each element has the following type. */
482 typedef unsigned long Elf32_Conflict;
483 typedef unsigned char Elf32_External_Conflict[4];
485 typedef unsigned long Elf64_Conflict;
486 typedef unsigned char Elf64_External_Conflict[8];
488 /* A section of type SHT_MIPS_GPTAB contains information about how
489 much GP space would be required for different -G arguments. This
490 information is only used so that the linker can provide informative
491 suggestions as to the best -G value to use. The sh_info field is
492 the index of the section for which this information applies. The
493 contents of the section are an array of the following union. The
494 first element uses the gt_header field. The remaining elements use
495 the gt_entry field. */
500 /* -G value actually used for this object file. */
501 unsigned long gt_current_g_value;
503 unsigned long gt_unused;
507 /* If this -G argument has been used... */
508 unsigned long gt_g_value;
509 /* ...this many GP section bytes would be required. */
510 unsigned long gt_bytes;
514 /* The external version of Elf32_gptab. */
520 unsigned char gt_current_g_value[4];
521 unsigned char gt_unused[4];
525 unsigned char gt_g_value[4];
526 unsigned char gt_bytes[4];
528 } Elf32_External_gptab;
530 /* A section of type SHT_MIPS_REGINFO contains the following
534 /* Mask of general purpose registers used. */
535 unsigned long ri_gprmask;
536 /* Mask of co-processor registers used. */
537 unsigned long ri_cprmask[4];
538 /* GP register value for this object file. */
542 /* The external version of the Elf_RegInfo structure. */
545 unsigned char ri_gprmask[4];
546 unsigned char ri_cprmask[4][4];
547 unsigned char ri_gp_value[4];
548 } Elf32_External_RegInfo;
550 /* MIPS ELF .reginfo swapping routines. */
551 extern void bfd_mips_elf32_swap_reginfo_in
552 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
553 extern void bfd_mips_elf32_swap_reginfo_out
554 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
556 /* Processor specific section flags. */
558 /* This section must be in the global data area. */
559 #define SHF_MIPS_GPREL 0x10000000
561 /* This section should be merged. */
562 #define SHF_MIPS_MERGE 0x20000000
564 /* This section contains address data of size implied by section
566 #define SHF_MIPS_ADDR 0x40000000
568 /* This section contains string data. */
569 #define SHF_MIPS_STRING 0x80000000
571 /* This section may not be stripped. */
572 #define SHF_MIPS_NOSTRIP 0x08000000
574 /* This section is local to threads. */
575 #define SHF_MIPS_LOCAL 0x04000000
577 /* Linker should generate implicit weak names for this section. */
578 #define SHF_MIPS_NAMES 0x02000000
580 /* Section contais text/data which may be replicated in other sections.
581 Linker should retain only one copy. */
582 #define SHF_MIPS_NODUPES 0x01000000
584 /* Processor specific program header types. */
586 /* Register usage information. Identifies one .reginfo section. */
587 #define PT_MIPS_REGINFO 0x70000000
589 /* Runtime procedure table. */
590 #define PT_MIPS_RTPROC 0x70000001
592 /* .MIPS.options section. */
593 #define PT_MIPS_OPTIONS 0x70000002
595 /* Processor specific dynamic array tags. */
597 /* 32 bit version number for runtime linker interface. */
598 #define DT_MIPS_RLD_VERSION 0x70000001
601 #define DT_MIPS_TIME_STAMP 0x70000002
603 /* Checksum of external strings and common sizes. */
604 #define DT_MIPS_ICHECKSUM 0x70000003
606 /* Index of version string in string table. */
607 #define DT_MIPS_IVERSION 0x70000004
609 /* 32 bits of flags. */
610 #define DT_MIPS_FLAGS 0x70000005
612 /* Base address of the segment. */
613 #define DT_MIPS_BASE_ADDRESS 0x70000006
616 #define DT_MIPS_MSYM 0x70000007
618 /* Address of .conflict section. */
619 #define DT_MIPS_CONFLICT 0x70000008
621 /* Address of .liblist section. */
622 #define DT_MIPS_LIBLIST 0x70000009
624 /* Number of local global offset table entries. */
625 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
627 /* Number of entries in the .conflict section. */
628 #define DT_MIPS_CONFLICTNO 0x7000000b
630 /* Number of entries in the .liblist section. */
631 #define DT_MIPS_LIBLISTNO 0x70000010
633 /* Number of entries in the .dynsym section. */
634 #define DT_MIPS_SYMTABNO 0x70000011
636 /* Index of first external dynamic symbol not referenced locally. */
637 #define DT_MIPS_UNREFEXTNO 0x70000012
639 /* Index of first dynamic symbol in global offset table. */
640 #define DT_MIPS_GOTSYM 0x70000013
642 /* Number of page table entries in global offset table. */
643 #define DT_MIPS_HIPAGENO 0x70000014
645 /* Address of run time loader map, used for debugging. */
646 #define DT_MIPS_RLD_MAP 0x70000016
648 /* Delta C++ class definition. */
649 #define DT_MIPS_DELTA_CLASS 0x70000017
651 /* Number of entries in DT_MIPS_DELTA_CLASS. */
652 #define DT_MIPS_DELTA_CLASS_NO 0x70000018
654 /* Delta C++ class instances. */
655 #define DT_MIPS_DELTA_INSTANCE 0x70000019
657 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */
658 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a
660 /* Delta relocations. */
661 #define DT_MIPS_DELTA_RELOC 0x7000001b
663 /* Number of entries in DT_MIPS_DELTA_RELOC. */
664 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c
666 /* Delta symbols that Delta relocations refer to. */
667 #define DT_MIPS_DELTA_SYM 0x7000001d
669 /* Number of entries in DT_MIPS_DELTA_SYM. */
670 #define DT_MIPS_DELTA_SYM_NO 0x7000001e
672 /* Delta symbols that hold class declarations. */
673 #define DT_MIPS_DELTA_CLASSSYM 0x70000020
675 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */
676 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021
678 /* Flags indicating information about C++ flavor. */
679 #define DT_MIPS_CXX_FLAGS 0x70000022
681 /* Pixie information (???). */
682 #define DT_MIPS_PIXIE_INIT 0x70000023
684 /* Address of .MIPS.symlib */
685 #define DT_MIPS_SYMBOL_LIB 0x70000024
687 /* The GOT index of the first PTE for a segment */
688 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025
690 /* The GOT index of the first PTE for a local symbol */
691 #define DT_MIPS_LOCAL_GOTIDX 0x70000026
693 /* The GOT index of the first PTE for a hidden symbol */
694 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027
696 /* The GOT index of the first PTE for a protected symbol */
697 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028
699 /* Address of `.MIPS.options'. */
700 #define DT_MIPS_OPTIONS 0x70000029
702 /* Address of `.interface'. */
703 #define DT_MIPS_INTERFACE 0x7000002a
706 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b
708 /* Size of the .interface section. */
709 #define DT_MIPS_INTERFACE_SIZE 0x7000002c
711 /* Size of rld_text_resolve function stored in the GOT. */
712 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d
714 /* Default suffix of DSO to be added by rld on dlopen() calls. */
715 #define DT_MIPS_PERF_SUFFIX 0x7000002e
717 /* Size of compact relocation section (O32). */
718 #define DT_MIPS_COMPACT_SIZE 0x7000002f
720 /* GP value for auxiliary GOTs. */
721 #define DT_MIPS_GP_VALUE 0x70000030
723 /* Address of auxiliary .dynamic. */
724 #define DT_MIPS_AUX_DYNAMIC 0x70000031
726 /* Address of the base of the PLTGOT. */
727 #define DT_MIPS_PLTGOT 0x70000032
729 /* Points to the base of a writable PLT. */
730 #define DT_MIPS_RWPLT 0x70000034
732 /* Flags which may appear in a DT_MIPS_FLAGS entry. */
735 #define RHF_NONE 0x00000000
737 /* Uses shortcut pointers. */
738 #define RHF_QUICKSTART 0x00000001
740 /* Hash size is not a power of two. */
741 #define RHF_NOTPOT 0x00000002
743 /* Ignore LD_LIBRARY_PATH. */
744 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
746 /* DSO address may not be relocated. */
747 #define RHF_NO_MOVE 0x00000008
749 /* SGI specific features. */
750 #define RHF_SGI_ONLY 0x00000010
752 /* Guarantee that .init will finish executing before any non-init
753 code in DSO is called. */
754 #define RHF_GUARANTEE_INIT 0x00000020
756 /* Contains Delta C++ code. */
757 #define RHF_DELTA_C_PLUS_PLUS 0x00000040
759 /* Guarantee that .init will start executing before any non-init
760 code in DSO is called. */
761 #define RHF_GUARANTEE_START_INIT 0x00000080
763 /* Generated by pixie. */
764 #define RHF_PIXIE 0x00000100
766 /* Delay-load DSO by default. */
767 #define RHF_DEFAULT_DELAY_LOAD 0x00000200
769 /* Object may be requickstarted */
770 #define RHF_REQUICKSTART 0x00000400
772 /* Object has been requickstarted */
773 #define RHF_REQUICKSTARTED 0x00000800
775 /* Generated by cord. */
776 #define RHF_CORD 0x00001000
778 /* Object contains no unresolved undef symbols. */
779 #define RHF_NO_UNRES_UNDEF 0x00002000
781 /* Symbol table is in a safe order. */
782 #define RHF_RLD_ORDER_SAFE 0x00004000
784 /* Special values for the st_other field in the symbol table. These
785 are used in an Irix 5 dynamic symbol table. */
787 #define STO_DEFAULT STV_DEFAULT
788 #define STO_INTERNAL STV_INTERNAL
789 #define STO_HIDDEN STV_HIDDEN
790 #define STO_PROTECTED STV_PROTECTED
792 /* Two topmost bits denote the MIPS ISA for .text symbols:
793 + 00 -- standard MIPS code,
794 + 10 -- microMIPS code,
795 + 11 -- MIPS16 code; requires the following two bits to be set too.
796 Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC. See below
798 #define STO_MIPS_ISA (3 << 6)
800 /* The mask spanning the rest of MIPS psABI flags. At most one is expected
801 to be set except for STO_MIPS16. */
802 #define STO_MIPS_FLAGS (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1)))
804 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
805 relocs. There are therefore two types of nonzero SHN_UNDEF functions:
806 PLT entries and traditional MIPS lazy binding stubs. We mark the former
807 with STO_MIPS_PLT to distinguish them from the latter. */
808 #define STO_MIPS_PLT 0x8
809 #define ELF_ST_IS_MIPS_PLT(other) \
810 ((ELF_ST_IS_MIPS16 (other) \
811 ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS)) \
812 : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT)
813 #define ELF_ST_SET_MIPS_PLT(other) \
814 ((ELF_ST_IS_MIPS16 (other) \
815 ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS)) \
816 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT)
818 /* This value is used to mark PIC functions in an object that mixes
819 PIC and non-PIC. Note that this bit overlaps with STO_MIPS16,
820 although MIPS16 symbols are never considered to be MIPS_PIC. */
821 #define STO_MIPS_PIC 0x20
822 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC)
823 #define ELF_ST_SET_MIPS_PIC(other) \
824 ((ELF_ST_IS_MIPS16 (other) \
825 ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS)) \
826 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC)
828 /* This value is used for a mips16 .text symbol. */
829 #define STO_MIPS16 0xf0
830 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16)
831 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16)
833 /* This value is used for a microMIPS .text symbol. To distinguish from
834 STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS. The
835 mask is STO_MIPS_ISA. */
836 #define STO_MICROMIPS (2 << 6)
837 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS)
838 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS)
840 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs)
841 has been indicated for a .text symbol. */
842 #define ELF_ST_IS_COMPRESSED(other) \
843 (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other))
845 /* This bit is used on Irix to indicate a symbol whose definition
846 is optional - if, at final link time, it cannot be found, no
847 error message should be produced. */
848 #define STO_OPTIONAL (1 << 2)
849 /* A macro to examine the STO_OPTIONAL bit. */
850 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL)
852 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
853 relocation entry specifies up to three actual relocations, all at
854 the same address. The first relocation which required a symbol
855 uses the symbol in the r_sym field. The second relocation which
856 requires a symbol uses the symbol in the r_ssym field. If all
857 three relocations require a symbol, the third one uses a zero
860 /* An entry in a 64 bit SHT_REL section. */
864 /* Address of relocation. */
865 unsigned char r_offset[8];
867 unsigned char r_sym[4];
868 /* Special symbol. */
869 unsigned char r_ssym[1];
870 /* Third relocation. */
871 unsigned char r_type3[1];
872 /* Second relocation. */
873 unsigned char r_type2[1];
874 /* First relocation. */
875 unsigned char r_type[1];
876 } Elf64_Mips_External_Rel;
880 /* Address of relocation. */
884 /* Special symbol. */
885 unsigned char r_ssym;
886 /* Third relocation. */
887 unsigned char r_type3;
888 /* Second relocation. */
889 unsigned char r_type2;
890 /* First relocation. */
891 unsigned char r_type;
892 } Elf64_Mips_Internal_Rel;
894 /* An entry in a 64 bit SHT_RELA section. */
898 /* Address of relocation. */
899 unsigned char r_offset[8];
901 unsigned char r_sym[4];
902 /* Special symbol. */
903 unsigned char r_ssym[1];
904 /* Third relocation. */
905 unsigned char r_type3[1];
906 /* Second relocation. */
907 unsigned char r_type2[1];
908 /* First relocation. */
909 unsigned char r_type[1];
911 unsigned char r_addend[8];
912 } Elf64_Mips_External_Rela;
916 /* Address of relocation. */
920 /* Special symbol. */
921 unsigned char r_ssym;
922 /* Third relocation. */
923 unsigned char r_type3;
924 /* Second relocation. */
925 unsigned char r_type2;
926 /* First relocation. */
927 unsigned char r_type;
929 bfd_signed_vma r_addend;
930 } Elf64_Mips_Internal_Rela;
932 /* MIPS ELF 64 relocation info access macros. */
933 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
934 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
935 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
936 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
938 /* Values found in the r_ssym field of a relocation entry. */
946 /* Value of GP in object being relocated. */
949 /* Address of location being relocated. */
952 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
953 which starts with this header. */
957 /* Type of option. */
958 unsigned char kind[1];
959 /* Size of option descriptor, including header. */
960 unsigned char size[1];
961 /* Section index of affected section, or 0 for global option. */
962 unsigned char section[2];
963 /* Information specific to this kind of option. */
964 unsigned char info[4];
965 } Elf_External_Options;
969 /* Type of option. */
971 /* Size of option descriptor, including header. */
973 /* Section index of affected section, or 0 for global option. */
974 unsigned short section;
975 /* Information specific to this kind of option. */
977 } Elf_Internal_Options;
979 /* MIPS ELF option header swapping routines. */
980 extern void bfd_mips_elf_swap_options_in
981 (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
982 extern void bfd_mips_elf_swap_options_out
983 (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
985 /* Values which may appear in the kind field of an Elf_Options
991 /* Register usage and GP value. */
992 #define ODK_REGINFO 1
994 /* Exception processing information. */
995 #define ODK_EXCEPTIONS 2
997 /* Section padding information. */
1000 /* Hardware workarounds performed. */
1001 #define ODK_HWPATCH 4
1003 /* Fill value used by the linker. */
1006 /* Reserved space for desktop tools. */
1009 /* Hardware workarounds, AND bits when merging. */
1012 /* Hardware workarounds, OR bits when merging. */
1015 /* GP group to use for text/data sections. */
1016 #define ODK_GP_GROUP 9
1018 /* ID information. */
1019 #define ODK_IDENT 10
1021 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
1022 structure. In the 64 bit ABI, it is the following structure. The
1023 info field of the options header is not used. */
1027 /* Mask of general purpose registers used. */
1028 unsigned char ri_gprmask[4];
1030 unsigned char ri_pad[4];
1031 /* Mask of co-processor registers used. */
1032 unsigned char ri_cprmask[4][4];
1033 /* GP register value for this object file. */
1034 unsigned char ri_gp_value[8];
1035 } Elf64_External_RegInfo;
1039 /* Mask of general purpose registers used. */
1040 unsigned long ri_gprmask;
1042 unsigned long ri_pad;
1043 /* Mask of co-processor registers used. */
1044 unsigned long ri_cprmask[4];
1045 /* GP register value for this object file. */
1046 bfd_vma ri_gp_value;
1047 } Elf64_Internal_RegInfo;
1051 /* The hash value computed from the name of the corresponding
1053 unsigned char ms_hash_value[4];
1054 /* Contains both the dynamic relocation index and the symbol flags
1055 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1056 to access the individual values. The dynamic relocation index
1057 identifies the first entry in the .rel.dyn section that
1058 references the dynamic symbol corresponding to this msym entry.
1059 If the index is 0, no dynamic relocations are associated with the
1060 symbol. The symbol flags field is reserved for future use. */
1061 unsigned char ms_info[4];
1062 } Elf32_External_Msym;
1066 /* The hash value computed from the name of the corresponding
1068 unsigned long ms_hash_value;
1069 /* Contains both the dynamic relocation index and the symbol flags
1070 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1071 to access the individual values. The dynamic relocation index
1072 identifies the first entry in the .rel.dyn section that
1073 references the dynamic symbol corresponding to this msym entry.
1074 If the index is 0, no dynamic relocations are associated with the
1075 symbol. The symbol flags field is reserved for future use. */
1076 unsigned long ms_info;
1077 } Elf32_Internal_Msym;
1079 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
1080 #define ELF32_MS_FLAGS(i) (i) & 0xff)
1081 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff))
1083 /* MIPS ELF reginfo swapping routines. */
1084 extern void bfd_mips_elf64_swap_reginfo_in
1085 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
1086 extern void bfd_mips_elf64_swap_reginfo_out
1087 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
1089 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */
1090 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */
1091 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */
1092 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */
1093 #define OEX_SMM 0x20000 /* Force sequential memory mode. */
1094 #define OEX_FPDBUG 0x40000 /* Force precise floating-point
1095 exceptions (debug mode). */
1096 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */
1098 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */
1099 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */
1100 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */
1101 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */
1102 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */
1103 #define OEX_FPU_INEX 0x01 /* Inexact exception. */
1105 /* Masks for the info word of an ODK_PAD descriptor. */
1106 #define OPAD_PREFIX 0x01
1107 #define OPAD_POSTFIX 0x02
1108 #define OPAD_SYMBOL 0x04
1110 /* Masks for the info word of an ODK_HWPATCH descriptor. */
1111 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */
1112 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */
1113 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */
1114 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug
1116 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned
1119 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */
1120 #define OGP_GROUP 0x0000ffff /* GP group number. */
1121 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */
1123 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */
1124 #define OHWA0_R4KEOP_CHECKED 0x00000001
1125 #define OHWA0_R4KEOP_CLEAN 0x00000002
1128 /* Object attribute tags. */
1131 /* 0-3 are generic. */
1132 Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1133 for hard-float -msingle-float, 3 for
1134 soft-float, 4 for -mips32r2 -mfp64; 0 for
1135 not tagged or not using any ABIs affected
1136 by the differences. */
1139 #endif /* _ELF_MIPS_H */