| 1 | /* MIPS ELF support for BFD. |
| 2 | Copyright (C) 1993, 1994, 1995, 1996, 1998 Free Software Foundation, Inc. |
| 3 | |
| 4 | By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from |
| 5 | information in the System V Application Binary Interface, MIPS |
| 6 | Processor Supplement. |
| 7 | |
| 8 | This file is part of BFD, the Binary File Descriptor library. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 23 | |
| 24 | /* This file holds definitions specific to the MIPS ELF ABI. Note |
| 25 | that most of this is not actually implemented by BFD. */ |
| 26 | |
| 27 | #ifndef _ELF_MIPS_H |
| 28 | #define _ELF_MIPS_H |
| 29 | |
| 30 | #include "elf/reloc-macros.h" |
| 31 | |
| 32 | /* Relocation types. */ |
| 33 | START_RELOC_NUMBERS (elf_mips_reloc_type) |
| 34 | RELOC_NUMBER (R_MIPS_NONE, 0) |
| 35 | RELOC_NUMBER (R_MIPS_16, 1) |
| 36 | RELOC_NUMBER (R_MIPS_32, 2) |
| 37 | RELOC_NUMBER (R_MIPS_REL32, 3) |
| 38 | RELOC_NUMBER (R_MIPS_26, 4) |
| 39 | RELOC_NUMBER (R_MIPS_HI16, 5) |
| 40 | RELOC_NUMBER (R_MIPS_LO16, 6) |
| 41 | RELOC_NUMBER (R_MIPS_GPREL16, 7) |
| 42 | RELOC_NUMBER (R_MIPS_LITERAL, 8) |
| 43 | RELOC_NUMBER (R_MIPS_GOT16, 9) |
| 44 | RELOC_NUMBER (R_MIPS_PC16, 10) |
| 45 | RELOC_NUMBER (R_MIPS_CALL16, 11) |
| 46 | RELOC_NUMBER (R_MIPS_GPREL32, 12) |
| 47 | /* The remaining relocs are defined on Irix, although they are not |
| 48 | in the MIPS ELF ABI. */ |
| 49 | RELOC_NUMBER (R_MIPS_UNUSED1, 13) |
| 50 | RELOC_NUMBER (R_MIPS_UNUSED2, 14) |
| 51 | RELOC_NUMBER (R_MIPS_UNUSED3, 15) |
| 52 | RELOC_NUMBER (R_MIPS_SHIFT5, 16) |
| 53 | RELOC_NUMBER (R_MIPS_SHIFT6, 17) |
| 54 | RELOC_NUMBER (R_MIPS_64, 18) |
| 55 | RELOC_NUMBER (R_MIPS_GOT_DISP, 19) |
| 56 | RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) |
| 57 | RELOC_NUMBER (R_MIPS_GOT_OFST, 21) |
| 58 | RELOC_NUMBER (R_MIPS_GOT_HI16, 22) |
| 59 | RELOC_NUMBER (R_MIPS_GOT_LO16, 23) |
| 60 | RELOC_NUMBER (R_MIPS_SUB, 24) |
| 61 | RELOC_NUMBER (R_MIPS_INSERT_A, 25) |
| 62 | RELOC_NUMBER (R_MIPS_INSERT_B, 26) |
| 63 | RELOC_NUMBER (R_MIPS_DELETE, 27) |
| 64 | RELOC_NUMBER (R_MIPS_HIGHER, 28) |
| 65 | RELOC_NUMBER (R_MIPS_HIGHEST, 29) |
| 66 | RELOC_NUMBER (R_MIPS_CALL_HI16, 30) |
| 67 | RELOC_NUMBER (R_MIPS_CALL_LO16, 31) |
| 68 | RELOC_NUMBER (R_MIPS_SCN_DISP, 32) |
| 69 | RELOC_NUMBER (R_MIPS_REL16, 33) |
| 70 | RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) |
| 71 | RELOC_NUMBER (R_MIPS_PJUMP, 35) |
| 72 | RELOC_NUMBER (R_MIPS_RELGOT, 36) |
| 73 | RELOC_NUMBER (R_MIPS_JALR, 37) |
| 74 | RELOC_NUMBER (R_MIPS_max, 38) |
| 75 | /* These relocs are used for the mips16. */ |
| 76 | RELOC_NUMBER (R_MIPS16_26, 100) |
| 77 | RELOC_NUMBER (R_MIPS16_GPREL, 101) |
| 78 | /* These are GNU extensions to enable C++ vtable garbage collection. */ |
| 79 | RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) |
| 80 | RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) |
| 81 | END_RELOC_NUMBERS |
| 82 | |
| 83 | /* Processor specific flags for the ELF header e_flags field. */ |
| 84 | |
| 85 | /* At least one .noreorder directive appears in the source. */ |
| 86 | #define EF_MIPS_NOREORDER 0x00000001 |
| 87 | |
| 88 | /* File contains position independent code. */ |
| 89 | #define EF_MIPS_PIC 0x00000002 |
| 90 | |
| 91 | /* Code in file uses the standard calling sequence for calling |
| 92 | position independent code. */ |
| 93 | #define EF_MIPS_CPIC 0x00000004 |
| 94 | |
| 95 | /* Code in file uses new ABI (-n32 on Irix 6). */ |
| 96 | #define EF_MIPS_ABI2 0x00000020 |
| 97 | |
| 98 | /* Indicates code compiled for a 64-bit machine in 32-bit mode. |
| 99 | (regs are 32-bits wide.) */ |
| 100 | #define EF_MIPS_32BITMODE 0x00000100 |
| 101 | |
| 102 | /* Four bit MIPS architecture field. */ |
| 103 | #define EF_MIPS_ARCH 0xf0000000 |
| 104 | |
| 105 | /* -mips1 code. */ |
| 106 | #define E_MIPS_ARCH_1 0x00000000 |
| 107 | |
| 108 | /* -mips2 code. */ |
| 109 | #define E_MIPS_ARCH_2 0x10000000 |
| 110 | |
| 111 | /* -mips3 code. */ |
| 112 | #define E_MIPS_ARCH_3 0x20000000 |
| 113 | |
| 114 | /* -mips4 code. */ |
| 115 | #define E_MIPS_ARCH_4 0x30000000 |
| 116 | |
| 117 | /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ |
| 118 | #define EF_MIPS_ABI 0x0000F000 |
| 119 | |
| 120 | /* The original o32 abi. */ |
| 121 | #define E_MIPS_ABI_O32 0x00001000 |
| 122 | |
| 123 | /* O32 extended to work on 64 bit architectures */ |
| 124 | #define E_MIPS_ABI_O64 0x00002000 |
| 125 | |
| 126 | /* EABI in 32 bit mode */ |
| 127 | #define E_MIPS_ABI_EABI32 0x00003000 |
| 128 | |
| 129 | /* EABI in 64 bit mode */ |
| 130 | #define E_MIPS_ABI_EABI64 0x00004000 |
| 131 | |
| 132 | |
| 133 | /* Machine variant if we know it. This field was invented at Cygnus, |
| 134 | but it is hoped that other vendors will adopt it. If some standard |
| 135 | is developed, this code should be changed to follow it. */ |
| 136 | |
| 137 | #define EF_MIPS_MACH 0x00FF0000 |
| 138 | |
| 139 | /* Cygnus is choosing values between 80 and 9F; |
| 140 | 00 - 7F should be left for a future standard; |
| 141 | the rest are open. */ |
| 142 | |
| 143 | #define E_MIPS_MACH_3900 0x00810000 |
| 144 | |
| 145 | #define E_MIPS_MACH_4010 0x00820000 |
| 146 | #define E_MIPS_MACH_4100 0x00830000 |
| 147 | #define E_MIPS_MACH_4650 0x00850000 |
| 148 | #define E_MIPS_MACH_4111 0x00880000 |
| 149 | |
| 150 | \f |
| 151 | /* Processor specific section indices. These sections do not actually |
| 152 | exist. Symbols with a st_shndx field corresponding to one of these |
| 153 | values have a special meaning. */ |
| 154 | |
| 155 | /* Defined and allocated common symbol. Value is virtual address. If |
| 156 | relocated, alignment must be preserved. */ |
| 157 | #define SHN_MIPS_ACOMMON 0xff00 |
| 158 | |
| 159 | /* Defined and allocated text symbol. Value is virtual address. |
| 160 | Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ |
| 161 | #define SHN_MIPS_TEXT 0xff01 |
| 162 | |
| 163 | /* Defined and allocated data symbol. Value is virtual address. |
| 164 | Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ |
| 165 | #define SHN_MIPS_DATA 0xff02 |
| 166 | |
| 167 | /* Small common symbol. */ |
| 168 | #define SHN_MIPS_SCOMMON 0xff03 |
| 169 | |
| 170 | /* Small undefined symbol. */ |
| 171 | #define SHN_MIPS_SUNDEFINED 0xff04 |
| 172 | \f |
| 173 | /* Processor specific section types. */ |
| 174 | |
| 175 | /* Section contains the set of dynamic shared objects used when |
| 176 | statically linking. */ |
| 177 | #define SHT_MIPS_LIBLIST 0x70000000 |
| 178 | |
| 179 | /* I'm not sure what this is, but it's used on Irix 5. */ |
| 180 | #define SHT_MIPS_MSYM 0x70000001 |
| 181 | |
| 182 | /* Section contains list of symbols whose definitions conflict with |
| 183 | symbols defined in shared objects. */ |
| 184 | #define SHT_MIPS_CONFLICT 0x70000002 |
| 185 | |
| 186 | /* Section contains the global pointer table. */ |
| 187 | #define SHT_MIPS_GPTAB 0x70000003 |
| 188 | |
| 189 | /* Section contains microcode information. The exact format is |
| 190 | unspecified. */ |
| 191 | #define SHT_MIPS_UCODE 0x70000004 |
| 192 | |
| 193 | /* Section contains some sort of debugging information. The exact |
| 194 | format is unspecified. It's probably ECOFF symbols. */ |
| 195 | #define SHT_MIPS_DEBUG 0x70000005 |
| 196 | |
| 197 | /* Section contains register usage information. */ |
| 198 | #define SHT_MIPS_REGINFO 0x70000006 |
| 199 | |
| 200 | /* ??? */ |
| 201 | #define SHT_MIPS_PACKAGE 0x70000007 |
| 202 | |
| 203 | /* ??? */ |
| 204 | #define SHT_MIPS_PACKSYM 0x70000008 |
| 205 | |
| 206 | /* ??? */ |
| 207 | #define SHT_MIPS_RELD 0x70000009 |
| 208 | |
| 209 | /* Section contains interface information. */ |
| 210 | #define SHT_MIPS_IFACE 0x7000000b |
| 211 | |
| 212 | /* Section contains description of contents of another section. */ |
| 213 | #define SHT_MIPS_CONTENT 0x7000000c |
| 214 | |
| 215 | /* Section contains miscellaneous options. */ |
| 216 | #define SHT_MIPS_OPTIONS 0x7000000d |
| 217 | |
| 218 | /* ??? */ |
| 219 | #define SHT_MIPS_SHDR 0x70000010 |
| 220 | |
| 221 | /* ??? */ |
| 222 | #define SHT_MIPS_FDESC 0x70000011 |
| 223 | |
| 224 | /* ??? */ |
| 225 | #define SHT_MIPS_EXTSYM 0x70000012 |
| 226 | |
| 227 | /* ??? */ |
| 228 | #define SHT_MIPS_DENSE 0x70000013 |
| 229 | |
| 230 | /* ??? */ |
| 231 | #define SHT_MIPS_PDESC 0x70000014 |
| 232 | |
| 233 | /* ??? */ |
| 234 | #define SHT_MIPS_LOCSYM 0x70000015 |
| 235 | |
| 236 | /* ??? */ |
| 237 | #define SHT_MIPS_AUXSYM 0x70000016 |
| 238 | |
| 239 | /* ??? */ |
| 240 | #define SHT_MIPS_OPTSYM 0x70000017 |
| 241 | |
| 242 | /* ??? */ |
| 243 | #define SHT_MIPS_LOCSTR 0x70000018 |
| 244 | |
| 245 | /* ??? */ |
| 246 | #define SHT_MIPS_LINE 0x70000019 |
| 247 | |
| 248 | /* ??? */ |
| 249 | #define SHT_MIPS_RFDESC 0x7000001a |
| 250 | |
| 251 | /* ??? */ |
| 252 | #define SHT_MIPS_DELTASYM 0x7000001b |
| 253 | |
| 254 | /* ??? */ |
| 255 | #define SHT_MIPS_DELTAINST 0x7000001c |
| 256 | |
| 257 | /* ??? */ |
| 258 | #define SHT_MIPS_DELTACLASS 0x7000001d |
| 259 | |
| 260 | /* DWARF debugging section. */ |
| 261 | #define SHT_MIPS_DWARF 0x7000001e |
| 262 | |
| 263 | /* ??? */ |
| 264 | #define SHT_MIPS_DELTADECL 0x7000001f |
| 265 | |
| 266 | /* List of libraries the binary depends on. Includes a time stamp, version |
| 267 | number. */ |
| 268 | #define SHT_MIPS_SYMBOL_LIB 0x70000020 |
| 269 | |
| 270 | /* Events section. */ |
| 271 | #define SHT_MIPS_EVENTS 0x70000021 |
| 272 | |
| 273 | /* ??? */ |
| 274 | #define SHT_MIPS_TRANSLATE 0x70000022 |
| 275 | |
| 276 | /* ??? */ |
| 277 | #define SHT_MIPS_PIXIE 0x70000023 |
| 278 | |
| 279 | /* ??? */ |
| 280 | #define SHT_MIPS_XLATE 0x70000024 |
| 281 | |
| 282 | /* ??? */ |
| 283 | #define SHT_MIPS_XLATE_DEBUG 0x70000025 |
| 284 | |
| 285 | /* ??? */ |
| 286 | #define SHT_MIPS_WHIRL 0x70000026 |
| 287 | |
| 288 | /* ??? */ |
| 289 | #define SHT_MIPS_EH_REGION 0x70000027 |
| 290 | |
| 291 | /* ??? */ |
| 292 | #define SHT_MIPS_XLATE_OLD 0x70000028 |
| 293 | |
| 294 | /* ??? */ |
| 295 | #define SHT_MIPS_PDR_EXCEPTION 0x70000029 |
| 296 | |
| 297 | |
| 298 | /* A section of type SHT_MIPS_LIBLIST contains an array of the |
| 299 | following structure. The sh_link field is the section index of the |
| 300 | string table. The sh_info field is the number of entries in the |
| 301 | section. */ |
| 302 | typedef struct |
| 303 | { |
| 304 | /* String table index for name of shared object. */ |
| 305 | unsigned long l_name; |
| 306 | /* Time stamp. */ |
| 307 | unsigned long l_time_stamp; |
| 308 | /* Checksum of symbol names and common sizes. */ |
| 309 | unsigned long l_checksum; |
| 310 | /* String table index for version. */ |
| 311 | unsigned long l_version; |
| 312 | /* Flags. */ |
| 313 | unsigned long l_flags; |
| 314 | } Elf32_Lib; |
| 315 | |
| 316 | /* The external version of Elf32_Lib. */ |
| 317 | typedef struct |
| 318 | { |
| 319 | unsigned char l_name[4]; |
| 320 | unsigned char l_time_stamp[4]; |
| 321 | unsigned char l_checksum[4]; |
| 322 | unsigned char l_version[4]; |
| 323 | unsigned char l_flags[4]; |
| 324 | } Elf32_External_Lib; |
| 325 | |
| 326 | /* The l_flags field of an Elf32_Lib structure may contain the |
| 327 | following flags. */ |
| 328 | |
| 329 | /* Require an exact match at runtime. */ |
| 330 | #define LL_EXACT_MATCH 0x00000001 |
| 331 | |
| 332 | /* Ignore version incompatibilities at runtime. */ |
| 333 | #define LL_IGNORE_INT_VER 0x00000002 |
| 334 | |
| 335 | /* Require matching minor version number. */ |
| 336 | #define LL_REQUIRE_MINOR 0x00000004 |
| 337 | |
| 338 | /* ??? */ |
| 339 | #define LL_EXPORTS 0x00000008 |
| 340 | |
| 341 | /* Delay loading of this library until really needed. */ |
| 342 | #define LL_DELAY_LOAD 0x00000010 |
| 343 | |
| 344 | /* ??? Delta C++ stuff ??? */ |
| 345 | #define LL_DELTA 0x00000020 |
| 346 | |
| 347 | |
| 348 | /* A section of type SHT_MIPS_CONFLICT is an array of indices into the |
| 349 | .dynsym section. Each element has the following type. */ |
| 350 | typedef unsigned long Elf32_Conflict; |
| 351 | typedef unsigned char Elf32_External_Conflict[4]; |
| 352 | |
| 353 | typedef unsigned long Elf64_Conflict; |
| 354 | typedef unsigned char Elf64_External_Conflict[8]; |
| 355 | |
| 356 | /* A section of type SHT_MIPS_GPTAB contains information about how |
| 357 | much GP space would be required for different -G arguments. This |
| 358 | information is only used so that the linker can provide informative |
| 359 | suggestions as to the best -G value to use. The sh_info field is |
| 360 | the index of the section for which this information applies. The |
| 361 | contents of the section are an array of the following union. The |
| 362 | first element uses the gt_header field. The remaining elements use |
| 363 | the gt_entry field. */ |
| 364 | typedef union |
| 365 | { |
| 366 | struct |
| 367 | { |
| 368 | /* -G value actually used for this object file. */ |
| 369 | unsigned long gt_current_g_value; |
| 370 | /* Unused. */ |
| 371 | unsigned long gt_unused; |
| 372 | } gt_header; |
| 373 | struct |
| 374 | { |
| 375 | /* If this -G argument has been used... */ |
| 376 | unsigned long gt_g_value; |
| 377 | /* ...this many GP section bytes would be required. */ |
| 378 | unsigned long gt_bytes; |
| 379 | } gt_entry; |
| 380 | } Elf32_gptab; |
| 381 | |
| 382 | /* The external version of Elf32_gptab. */ |
| 383 | |
| 384 | typedef union |
| 385 | { |
| 386 | struct |
| 387 | { |
| 388 | unsigned char gt_current_g_value[4]; |
| 389 | unsigned char gt_unused[4]; |
| 390 | } gt_header; |
| 391 | struct |
| 392 | { |
| 393 | unsigned char gt_g_value[4]; |
| 394 | unsigned char gt_bytes[4]; |
| 395 | } gt_entry; |
| 396 | } Elf32_External_gptab; |
| 397 | |
| 398 | /* A section of type SHT_MIPS_REGINFO contains the following |
| 399 | structure. */ |
| 400 | typedef struct |
| 401 | { |
| 402 | /* Mask of general purpose registers used. */ |
| 403 | unsigned long ri_gprmask; |
| 404 | /* Mask of co-processor registers used. */ |
| 405 | unsigned long ri_cprmask[4]; |
| 406 | /* GP register value for this object file. */ |
| 407 | long ri_gp_value; |
| 408 | } Elf32_RegInfo; |
| 409 | |
| 410 | /* The external version of the Elf_RegInfo structure. */ |
| 411 | typedef struct |
| 412 | { |
| 413 | unsigned char ri_gprmask[4]; |
| 414 | unsigned char ri_cprmask[4][4]; |
| 415 | unsigned char ri_gp_value[4]; |
| 416 | } Elf32_External_RegInfo; |
| 417 | |
| 418 | /* MIPS ELF .reginfo swapping routines. */ |
| 419 | extern void bfd_mips_elf32_swap_reginfo_in |
| 420 | PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *)); |
| 421 | extern void bfd_mips_elf32_swap_reginfo_out |
| 422 | PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *)); |
| 423 | \f |
| 424 | /* Processor specific section flags. */ |
| 425 | |
| 426 | /* This section must be in the global data area. */ |
| 427 | #define SHF_MIPS_GPREL 0x10000000 |
| 428 | |
| 429 | /* This section should be merged. */ |
| 430 | #define SHF_MIPS_MERGE 0x20000000 |
| 431 | |
| 432 | /* This section contains 32 bit addresses. */ |
| 433 | #define SHF_MIPS_ADDR32 0x40000000 |
| 434 | |
| 435 | /* This section contains 64 bit addresses. */ |
| 436 | #define SHF_MIPS_ADDR64 0x80000000 |
| 437 | |
| 438 | /* This section may not be stripped. */ |
| 439 | #define SHF_MIPS_NOSTRIP 0x08000000 |
| 440 | |
| 441 | /* This section is local to threads. */ |
| 442 | #define SHF_MIPS_LOCAL 0x04000000 |
| 443 | |
| 444 | /* Linker should generate implicit weak names for this section. */ |
| 445 | #define SHF_MIPS_NAMES 0x02000000 |
| 446 | \f |
| 447 | /* Processor specific program header types. */ |
| 448 | |
| 449 | /* Register usage information. Identifies one .reginfo section. */ |
| 450 | #define PT_MIPS_REGINFO 0x70000000 |
| 451 | |
| 452 | /* Runtime procedure table. */ |
| 453 | #define PT_MIPS_RTPROC 0x70000001 |
| 454 | |
| 455 | /* Options (for what ???). */ |
| 456 | #define PT_MIPS_OPTIONS 0x70000002 |
| 457 | \f |
| 458 | /* Processor specific dynamic array tags. */ |
| 459 | |
| 460 | /* 32 bit version number for runtime linker interface. */ |
| 461 | #define DT_MIPS_RLD_VERSION 0x70000001 |
| 462 | |
| 463 | /* Time stamp. */ |
| 464 | #define DT_MIPS_TIME_STAMP 0x70000002 |
| 465 | |
| 466 | /* Checksum of external strings and common sizes. */ |
| 467 | #define DT_MIPS_ICHECKSUM 0x70000003 |
| 468 | |
| 469 | /* Index of version string in string table. */ |
| 470 | #define DT_MIPS_IVERSION 0x70000004 |
| 471 | |
| 472 | /* 32 bits of flags. */ |
| 473 | #define DT_MIPS_FLAGS 0x70000005 |
| 474 | |
| 475 | /* Base address of the segment. */ |
| 476 | #define DT_MIPS_BASE_ADDRESS 0x70000006 |
| 477 | |
| 478 | /* ??? */ |
| 479 | #define DT_MIPS_MSYM 0x70000007 |
| 480 | |
| 481 | /* Address of .conflict section. */ |
| 482 | #define DT_MIPS_CONFLICT 0x70000008 |
| 483 | |
| 484 | /* Address of .liblist section. */ |
| 485 | #define DT_MIPS_LIBLIST 0x70000009 |
| 486 | |
| 487 | /* Number of local global offset table entries. */ |
| 488 | #define DT_MIPS_LOCAL_GOTNO 0x7000000a |
| 489 | |
| 490 | /* Number of entries in the .conflict section. */ |
| 491 | #define DT_MIPS_CONFLICTNO 0x7000000b |
| 492 | |
| 493 | /* Number of entries in the .liblist section. */ |
| 494 | #define DT_MIPS_LIBLISTNO 0x70000010 |
| 495 | |
| 496 | /* Number of entries in the .dynsym section. */ |
| 497 | #define DT_MIPS_SYMTABNO 0x70000011 |
| 498 | |
| 499 | /* Index of first external dynamic symbol not referenced locally. */ |
| 500 | #define DT_MIPS_UNREFEXTNO 0x70000012 |
| 501 | |
| 502 | /* Index of first dynamic symbol in global offset table. */ |
| 503 | #define DT_MIPS_GOTSYM 0x70000013 |
| 504 | |
| 505 | /* Number of page table entries in global offset table. */ |
| 506 | #define DT_MIPS_HIPAGENO 0x70000014 |
| 507 | |
| 508 | /* Address of run time loader map, used for debugging. */ |
| 509 | #define DT_MIPS_RLD_MAP 0x70000016 |
| 510 | |
| 511 | /* Delta C++ class definition. */ |
| 512 | #define DT_MIPS_DELTA_CLASS 0x70000017 |
| 513 | |
| 514 | /* Number of entries in DT_MIPS_DELTA_CLASS. */ |
| 515 | #define DT_MIPS_DELTA_CLASS_NO 0x70000018 |
| 516 | |
| 517 | /* Delta C++ class instances. */ |
| 518 | #define DT_MIPS_DELTA_INSTANCE 0x70000019 |
| 519 | |
| 520 | /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ |
| 521 | #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a |
| 522 | |
| 523 | /* Delta relocations. */ |
| 524 | #define DT_MIPS_DELTA_RELOC 0x7000001b |
| 525 | |
| 526 | /* Number of entries in DT_MIPS_DELTA_RELOC. */ |
| 527 | #define DT_MIPS_DELTA_RELOC_NO 0x7000001c |
| 528 | |
| 529 | /* Delta symbols that Delta relocations refer to. */ |
| 530 | #define DT_MIPS_DELTA_SYM 0x7000001d |
| 531 | |
| 532 | /* Number of entries in DT_MIPS_DELTA_SYM. */ |
| 533 | #define DT_MIPS_DELTA_SYM_NO 0x7000001e |
| 534 | |
| 535 | /* Delta symbols that hold class declarations. */ |
| 536 | #define DT_MIPS_DELTA_CLASSSYM 0x70000020 |
| 537 | |
| 538 | /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ |
| 539 | #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 |
| 540 | |
| 541 | /* Flags indicating information about C++ flavor. */ |
| 542 | #define DT_MIPS_CXX_FLAGS 0x70000022 |
| 543 | |
| 544 | /* Pixie information (???). */ |
| 545 | #define DT_MIPS_PIXIE_INIT 0x70000023 |
| 546 | |
| 547 | /* ??? */ |
| 548 | #define DT_MIPS_SYMBOL_LIB 0x70000024 |
| 549 | |
| 550 | /* ??? */ |
| 551 | #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 |
| 552 | |
| 553 | /* ??? */ |
| 554 | #define DT_MIPS_LOCAL_GOTIDX 0x70000026 |
| 555 | |
| 556 | /* ??? */ |
| 557 | #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 |
| 558 | |
| 559 | /* ??? */ |
| 560 | #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 |
| 561 | |
| 562 | /* Address of `.MIPS.options'. */ |
| 563 | #define DT_MIPS_OPTIONS 0x70000029 |
| 564 | |
| 565 | /* Address of `.interface'. */ |
| 566 | #define DT_MIPS_INTERFACE 0x7000002a |
| 567 | |
| 568 | /* ??? */ |
| 569 | #define DT_MIPS_DYNSTR_ALIGN 0x7000002b |
| 570 | |
| 571 | /* Size of the .interface section. */ |
| 572 | #define DT_MIPS_INTERFACE_SIZE 0x7000002c |
| 573 | |
| 574 | /* Size of rld_text_resolve function stored in the GOT. */ |
| 575 | #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d |
| 576 | |
| 577 | /* Default suffix of DSO to be added by rld on dlopen() calls. */ |
| 578 | #define DT_MIPS_PERF_SUFFIX 0x7000002e |
| 579 | |
| 580 | /* Size of compact relocation section (O32). */ |
| 581 | #define DT_MIPS_COMPACT_SIZE 0x7000002f |
| 582 | |
| 583 | /* GP value for auxiliary GOTs. */ |
| 584 | #define DT_MIPS_GP_VALUE 0x70000030 |
| 585 | |
| 586 | /* Address of auxiliary .dynamic. */ |
| 587 | #define DT_MIPS_AUX_DYNAMIC 0x70000031 |
| 588 | \f |
| 589 | /* Flags which may appear in a DT_MIPS_FLAGS entry. */ |
| 590 | |
| 591 | /* No flags. */ |
| 592 | #define RHF_NONE 0x00000000 |
| 593 | |
| 594 | /* Uses shortcut pointers. */ |
| 595 | #define RHF_QUICKSTART 0x00000001 |
| 596 | |
| 597 | /* Hash size is not a power of two. */ |
| 598 | #define RHF_NOTPOT 0x00000002 |
| 599 | |
| 600 | /* Ignore LD_LIBRARY_PATH. */ |
| 601 | #define RHS_NO_LIBRARY_REPLACEMENT \ |
| 602 | 0x00000004 |
| 603 | |
| 604 | #define RHF_NO_MOVE 0x00000008 |
| 605 | #define RHF_SGI_ONLY 0x00000010 |
| 606 | #define RHF_GUARANTEE_INIT 0x00000020 |
| 607 | #define RHF_DELTA_C_PLUS_PLUS 0x00000040 |
| 608 | #define RHF_GUARANTEE_START_INIT 0x00000080 |
| 609 | #define RHF_PIXIE 0x00000100 |
| 610 | #define RHF_DEFAULT_DELAY_LOAD 0x00000200 |
| 611 | #define RHF_REQUICKSTART 0x00000400 |
| 612 | #define RHF_REQUICKSTARTED 0x00000800 |
| 613 | #define RHF_CORD 0x00001000 |
| 614 | #define RHF_NO_UNRES_UNDEF 0x00002000 |
| 615 | #define RHF_RLD_ORDER_SAFE 0x00004000 |
| 616 | \f |
| 617 | /* Special values for the st_other field in the symbol table. These |
| 618 | are used in an Irix 5 dynamic symbol table. */ |
| 619 | |
| 620 | #define STO_DEFAULT 0x00 |
| 621 | #define STO_INTERNAL 0x01 |
| 622 | #define STO_HIDDEN 0x02 |
| 623 | #define STO_PROTECTED 0x03 |
| 624 | |
| 625 | /* This value is used for a mips16 .text symbol. */ |
| 626 | #define STO_MIPS16 0xf0 |
| 627 | \f |
| 628 | /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each |
| 629 | relocation entry specifies up to three actual relocations, all at |
| 630 | the same address. The first relocation which required a symbol |
| 631 | uses the symbol in the r_sym field. The second relocation which |
| 632 | requires a symbol uses the symbol in the r_ssym field. If all |
| 633 | three relocations require a symbol, the third one uses a zero |
| 634 | value. */ |
| 635 | |
| 636 | /* An entry in a 64 bit SHT_REL section. */ |
| 637 | |
| 638 | typedef struct |
| 639 | { |
| 640 | /* Address of relocation. */ |
| 641 | unsigned char r_offset[8]; |
| 642 | /* Symbol index. */ |
| 643 | unsigned char r_sym[4]; |
| 644 | /* Special symbol. */ |
| 645 | unsigned char r_ssym[1]; |
| 646 | /* Third relocation. */ |
| 647 | unsigned char r_type3[1]; |
| 648 | /* Second relocation. */ |
| 649 | unsigned char r_type2[1]; |
| 650 | /* First relocation. */ |
| 651 | unsigned char r_type[1]; |
| 652 | } Elf64_Mips_External_Rel; |
| 653 | |
| 654 | typedef struct |
| 655 | { |
| 656 | /* Address of relocation. */ |
| 657 | bfd_vma r_offset; |
| 658 | /* Symbol index. */ |
| 659 | unsigned long r_sym; |
| 660 | /* Special symbol. */ |
| 661 | unsigned char r_ssym; |
| 662 | /* Third relocation. */ |
| 663 | unsigned char r_type3; |
| 664 | /* Second relocation. */ |
| 665 | unsigned char r_type2; |
| 666 | /* First relocation. */ |
| 667 | unsigned char r_type; |
| 668 | } Elf64_Mips_Internal_Rel; |
| 669 | |
| 670 | /* An entry in a 64 bit SHT_RELA section. */ |
| 671 | |
| 672 | typedef struct |
| 673 | { |
| 674 | /* Address of relocation. */ |
| 675 | unsigned char r_offset[8]; |
| 676 | /* Symbol index. */ |
| 677 | unsigned char r_sym[4]; |
| 678 | /* Special symbol. */ |
| 679 | unsigned char r_ssym[1]; |
| 680 | /* Third relocation. */ |
| 681 | unsigned char r_type3[1]; |
| 682 | /* Second relocation. */ |
| 683 | unsigned char r_type2[1]; |
| 684 | /* First relocation. */ |
| 685 | unsigned char r_type[1]; |
| 686 | /* Addend. */ |
| 687 | unsigned char r_addend[8]; |
| 688 | } Elf64_Mips_External_Rela; |
| 689 | |
| 690 | typedef struct |
| 691 | { |
| 692 | /* Address of relocation. */ |
| 693 | bfd_vma r_offset; |
| 694 | /* Symbol index. */ |
| 695 | unsigned long r_sym; |
| 696 | /* Special symbol. */ |
| 697 | unsigned char r_ssym; |
| 698 | /* Third relocation. */ |
| 699 | unsigned char r_type3; |
| 700 | /* Second relocation. */ |
| 701 | unsigned char r_type2; |
| 702 | /* First relocation. */ |
| 703 | unsigned char r_type; |
| 704 | /* Addend. */ |
| 705 | bfd_signed_vma r_addend; |
| 706 | } Elf64_Mips_Internal_Rela; |
| 707 | |
| 708 | /* Values found in the r_ssym field of a relocation entry. */ |
| 709 | |
| 710 | /* No relocation. */ |
| 711 | #define RSS_UNDEF 0 |
| 712 | |
| 713 | /* Value of GP. */ |
| 714 | #define RSS_GP 1 |
| 715 | |
| 716 | /* Value of GP in object being relocated. */ |
| 717 | #define RSS_GP0 2 |
| 718 | |
| 719 | /* Address of location being relocated. */ |
| 720 | #define RSS_LOC 3 |
| 721 | \f |
| 722 | /* A SHT_MIPS_OPTIONS section contains a series of options, each of |
| 723 | which starts with this header. */ |
| 724 | |
| 725 | typedef struct |
| 726 | { |
| 727 | /* Type of option. */ |
| 728 | unsigned char kind[1]; |
| 729 | /* Size of option descriptor, including header. */ |
| 730 | unsigned char size[1]; |
| 731 | /* Section index of affected section, or 0 for global option. */ |
| 732 | unsigned char section[2]; |
| 733 | /* Information specific to this kind of option. */ |
| 734 | unsigned char info[4]; |
| 735 | } Elf_External_Options; |
| 736 | |
| 737 | typedef struct |
| 738 | { |
| 739 | /* Type of option. */ |
| 740 | unsigned char kind; |
| 741 | /* Size of option descriptor, including header. */ |
| 742 | unsigned char size; |
| 743 | /* Section index of affected section, or 0 for global option. */ |
| 744 | unsigned short section; |
| 745 | /* Information specific to this kind of option. */ |
| 746 | unsigned long info; |
| 747 | } Elf_Internal_Options; |
| 748 | |
| 749 | /* MIPS ELF option header swapping routines. */ |
| 750 | extern void bfd_mips_elf_swap_options_in |
| 751 | PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *)); |
| 752 | extern void bfd_mips_elf_swap_options_out |
| 753 | PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *)); |
| 754 | |
| 755 | /* Values which may appear in the kind field of an Elf_Options |
| 756 | structure. */ |
| 757 | |
| 758 | /* Undefined. */ |
| 759 | #define ODK_NULL 0 |
| 760 | |
| 761 | /* Register usage and GP value. */ |
| 762 | #define ODK_REGINFO 1 |
| 763 | |
| 764 | /* Exception processing information. */ |
| 765 | #define ODK_EXCEPTIONS 2 |
| 766 | |
| 767 | /* Section padding information. */ |
| 768 | #define ODK_PAD 3 |
| 769 | |
| 770 | /* Hardware workarounds performed. */ |
| 771 | #define ODK_HWPATCH 4 |
| 772 | |
| 773 | /* Fill value used by the linker. */ |
| 774 | #define ODK_FILL 5 |
| 775 | |
| 776 | /* Reserved space for desktop tools. */ |
| 777 | #define ODK_TAGS 6 |
| 778 | |
| 779 | /* Hardware workarounds, AND bits when merging. */ |
| 780 | #define ODK_HWAND 7 |
| 781 | |
| 782 | /* Hardware workarounds, OR bits when merging. */ |
| 783 | #define ODK_HWOR 8 |
| 784 | |
| 785 | /* GP group to use for text/data sections. */ |
| 786 | #define ODK_GP_GROUP 9 |
| 787 | |
| 788 | /* ID information. */ |
| 789 | #define ODK_IDENT 10 |
| 790 | |
| 791 | /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo |
| 792 | structure. In the 64 bit ABI, it is the following structure. The |
| 793 | info field of the options header is not used. */ |
| 794 | |
| 795 | typedef struct |
| 796 | { |
| 797 | /* Mask of general purpose registers used. */ |
| 798 | unsigned char ri_gprmask[4]; |
| 799 | /* Padding. */ |
| 800 | unsigned char ri_pad[4]; |
| 801 | /* Mask of co-processor registers used. */ |
| 802 | unsigned char ri_cprmask[4][4]; |
| 803 | /* GP register value for this object file. */ |
| 804 | unsigned char ri_gp_value[8]; |
| 805 | } Elf64_External_RegInfo; |
| 806 | |
| 807 | typedef struct |
| 808 | { |
| 809 | /* Mask of general purpose registers used. */ |
| 810 | unsigned long ri_gprmask; |
| 811 | /* Padding. */ |
| 812 | unsigned long ri_pad; |
| 813 | /* Mask of co-processor registers used. */ |
| 814 | unsigned long ri_cprmask[4]; |
| 815 | /* GP register value for this object file. */ |
| 816 | bfd_vma ri_gp_value; |
| 817 | } Elf64_Internal_RegInfo; |
| 818 | |
| 819 | /* MIPS ELF reginfo swapping routines. */ |
| 820 | extern void bfd_mips_elf64_swap_reginfo_in |
| 821 | PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *)); |
| 822 | extern void bfd_mips_elf64_swap_reginfo_out |
| 823 | PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *)); |
| 824 | |
| 825 | /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ |
| 826 | #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ |
| 827 | #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ |
| 828 | #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ |
| 829 | #define OEX_SMM 0x20000 /* Force sequential memory mode. */ |
| 830 | #define OEX_FPDBUG 0x40000 /* Force floating-point debug mode. */ |
| 831 | #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ |
| 832 | |
| 833 | /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ |
| 834 | #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ |
| 835 | #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ |
| 836 | #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ |
| 837 | #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ |
| 838 | #define OEX_FPU_INEX 0x01 /* Inexact exception. */ |
| 839 | |
| 840 | /* Masks for the info word of an ODK_PAD descriptor. */ |
| 841 | #define OPAD_PREFIX 0x01 |
| 842 | #define OPAD_POSTFIX 0x02 |
| 843 | #define OPAD_SYMBOL 0x04 |
| 844 | |
| 845 | /* Masks for the info word of an ODK_HWPATCH descriptor. */ |
| 846 | #define OHW_R4KEOP 0x01 /* R4000 end-of-page patch. */ |
| 847 | #define OHW_R8KPFETCH 0x02 /* May need R8000 prefetch patch. */ |
| 848 | #define OHW_R5KEOP 0x04 /* R5000 end-of-page patch. */ |
| 849 | #define OHW_R5KCVTL 0x08 /* R5000 cvt.[ds].l bug (clean == 1). */ |
| 850 | |
| 851 | /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ |
| 852 | #define OGP_GROUP 0x0000ffff /* GP group number. */ |
| 853 | #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ |
| 854 | |
| 855 | /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ |
| 856 | #define OHWA0_R4KEOP_CHECKED 0x00000001 |
| 857 | #define OHWA0_R4KEOP_CLEAN 0x00000002 |
| 858 | \f |
| 859 | |
| 860 | #endif /* _ELF_MIPS_H */ |