1 /* MIPS ELF support for BFD. 2 Copyright (C) 1993-2016 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 3 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., 51 Franklin Street - Fifth Floor, Boston, 23 MA 02110-1301, USA. */ 24 25 /* This file holds definitions specific to the MIPS ELF ABI. Note 26 that most of this is not actually implemented by BFD. */ 27 28 #ifndef _ELF_MIPS_H 29 #define _ELF_MIPS_H 30 31 #include "elf/reloc-macros.h" 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 /* Relocation types. */ 38 START_RELOC_NUMBERS (elf_mips_reloc_type) 39 RELOC_NUMBER (R_MIPS_NONE, 0) 40 RELOC_NUMBER (R_MIPS_16, 1) 41 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */ 42 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */ 43 RELOC_NUMBER (R_MIPS_26, 4) 44 RELOC_NUMBER (R_MIPS_HI16, 5) 45 RELOC_NUMBER (R_MIPS_LO16, 6) 46 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */ 47 RELOC_NUMBER (R_MIPS_LITERAL, 8) 48 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */ 49 RELOC_NUMBER (R_MIPS_PC16, 10) 50 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */ 51 RELOC_NUMBER (R_MIPS_GPREL32, 12) 52 /* The remaining relocs are defined on Irix, although they are not 53 in the MIPS ELF ABI. */ 54 RELOC_NUMBER (R_MIPS_UNUSED1, 13) 55 RELOC_NUMBER (R_MIPS_UNUSED2, 14) 56 RELOC_NUMBER (R_MIPS_UNUSED3, 15) 57 RELOC_NUMBER (R_MIPS_SHIFT5, 16) 58 RELOC_NUMBER (R_MIPS_SHIFT6, 17) 59 RELOC_NUMBER (R_MIPS_64, 18) 60 RELOC_NUMBER (R_MIPS_GOT_DISP, 19) 61 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) 62 RELOC_NUMBER (R_MIPS_GOT_OFST, 21) 63 RELOC_NUMBER (R_MIPS_GOT_HI16, 22) 64 RELOC_NUMBER (R_MIPS_GOT_LO16, 23) 65 RELOC_NUMBER (R_MIPS_SUB, 24) 66 RELOC_NUMBER (R_MIPS_INSERT_A, 25) 67 RELOC_NUMBER (R_MIPS_INSERT_B, 26) 68 RELOC_NUMBER (R_MIPS_DELETE, 27) 69 RELOC_NUMBER (R_MIPS_HIGHER, 28) 70 RELOC_NUMBER (R_MIPS_HIGHEST, 29) 71 RELOC_NUMBER (R_MIPS_CALL_HI16, 30) 72 RELOC_NUMBER (R_MIPS_CALL_LO16, 31) 73 RELOC_NUMBER (R_MIPS_SCN_DISP, 32) 74 RELOC_NUMBER (R_MIPS_REL16, 33) 75 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) 76 RELOC_NUMBER (R_MIPS_PJUMP, 35) 77 RELOC_NUMBER (R_MIPS_RELGOT, 36) 78 RELOC_NUMBER (R_MIPS_JALR, 37) 79 /* TLS relocations. */ 80 RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38) 81 RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39) 82 RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40) 83 RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41) 84 RELOC_NUMBER (R_MIPS_TLS_GD, 42) 85 RELOC_NUMBER (R_MIPS_TLS_LDM, 43) 86 RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44) 87 RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45) 88 RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46) 89 RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47) 90 RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48) 91 RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49) 92 RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50) 93 RELOC_NUMBER (R_MIPS_GLOB_DAT, 51) 94 /* Space to grow */ 95 RELOC_NUMBER (R_MIPS_PC21_S2, 60) 96 RELOC_NUMBER (R_MIPS_PC26_S2, 61) 97 RELOC_NUMBER (R_MIPS_PC18_S3, 62) 98 RELOC_NUMBER (R_MIPS_PC19_S2, 63) 99 RELOC_NUMBER (R_MIPS_PCHI16, 64) 100 RELOC_NUMBER (R_MIPS_PCLO16, 65) 101 FAKE_RELOC (R_MIPS_max, 66) 102 /* These relocs are used for the mips16. */ 103 FAKE_RELOC (R_MIPS16_min, 100) 104 RELOC_NUMBER (R_MIPS16_26, 100) 105 RELOC_NUMBER (R_MIPS16_GPREL, 101) 106 RELOC_NUMBER (R_MIPS16_GOT16, 102) 107 RELOC_NUMBER (R_MIPS16_CALL16, 103) 108 RELOC_NUMBER (R_MIPS16_HI16, 104) 109 RELOC_NUMBER (R_MIPS16_LO16, 105) 110 RELOC_NUMBER (R_MIPS16_TLS_GD, 106) 111 RELOC_NUMBER (R_MIPS16_TLS_LDM, 107) 112 RELOC_NUMBER (R_MIPS16_TLS_DTPREL_HI16, 108) 113 RELOC_NUMBER (R_MIPS16_TLS_DTPREL_LO16, 109) 114 RELOC_NUMBER (R_MIPS16_TLS_GOTTPREL, 110) 115 RELOC_NUMBER (R_MIPS16_TLS_TPREL_HI16, 111) 116 RELOC_NUMBER (R_MIPS16_TLS_TPREL_LO16, 112) 117 RELOC_NUMBER (R_MIPS16_PC16_S1, 113) 118 FAKE_RELOC (R_MIPS16_max, 114) 119 /* These relocations are specific to VxWorks. */ 120 RELOC_NUMBER (R_MIPS_COPY, 126) 121 RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127) 122 123 /* These relocations are specific to microMIPS. */ 124 FAKE_RELOC (R_MICROMIPS_min, 130) 125 RELOC_NUMBER (R_MICROMIPS_26_S1, 133) 126 RELOC_NUMBER (R_MICROMIPS_HI16, 134) 127 RELOC_NUMBER (R_MICROMIPS_LO16, 135) 128 RELOC_NUMBER (R_MICROMIPS_GPREL16, 136) /* In Elf 64: 129 alias R_MICROMIPS_GPREL */ 130 RELOC_NUMBER (R_MICROMIPS_LITERAL, 137) 131 RELOC_NUMBER (R_MICROMIPS_GOT16, 138) /* In Elf 64: 132 alias R_MICROMIPS_GOT */ 133 RELOC_NUMBER (R_MICROMIPS_PC7_S1, 139) 134 RELOC_NUMBER (R_MICROMIPS_PC10_S1, 140) 135 RELOC_NUMBER (R_MICROMIPS_PC16_S1, 141) 136 RELOC_NUMBER (R_MICROMIPS_CALL16, 142) /* In Elf 64: 137 alias R_MICROMIPS_CALL */ 138 RELOC_NUMBER (R_MICROMIPS_GOT_DISP, 145) 139 RELOC_NUMBER (R_MICROMIPS_GOT_PAGE, 146) 140 RELOC_NUMBER (R_MICROMIPS_GOT_OFST, 147) 141 RELOC_NUMBER (R_MICROMIPS_GOT_HI16, 148) 142 RELOC_NUMBER (R_MICROMIPS_GOT_LO16, 149) 143 RELOC_NUMBER (R_MICROMIPS_SUB, 150) 144 RELOC_NUMBER (R_MICROMIPS_HIGHER, 151) 145 RELOC_NUMBER (R_MICROMIPS_HIGHEST, 152) 146 RELOC_NUMBER (R_MICROMIPS_CALL_HI16, 153) 147 RELOC_NUMBER (R_MICROMIPS_CALL_LO16, 154) 148 RELOC_NUMBER (R_MICROMIPS_SCN_DISP, 155) 149 RELOC_NUMBER (R_MICROMIPS_JALR, 156) 150 RELOC_NUMBER (R_MICROMIPS_HI0_LO16, 157) 151 /* TLS relocations. */ 152 RELOC_NUMBER (R_MICROMIPS_TLS_GD, 162) 153 RELOC_NUMBER (R_MICROMIPS_TLS_LDM, 163) 154 RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_HI16, 164) 155 RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_LO16, 165) 156 RELOC_NUMBER (R_MICROMIPS_TLS_GOTTPREL, 166) 157 RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_HI16, 169) 158 RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_LO16, 170) 159 /* microMIPS GP- and PC-relative relocations. */ 160 RELOC_NUMBER (R_MICROMIPS_GPREL7_S2, 172) 161 RELOC_NUMBER (R_MICROMIPS_PC23_S2, 173) 162 FAKE_RELOC (R_MICROMIPS_max, 174) 163 164 /* This was a GNU extension used by embedded-PIC. It was co-opted by 165 mips-linux for exception-handling data. GCC stopped using it in 166 May, 2004, then started using it again for compact unwind tables. */ 167 RELOC_NUMBER (R_MIPS_PC32, 248) 168 RELOC_NUMBER (R_MIPS_EH, 249) 169 /* FIXME: this relocation is used internally by gas. */ 170 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 171 /* These are GNU extensions to enable C++ vtable garbage collection. */ 172 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 173 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 174 END_RELOC_NUMBERS (R_MIPS_maxext) 175 176 /* Processor specific flags for the ELF header e_flags field. */ 177 178 /* At least one .noreorder directive appears in the source. */ 179 #define EF_MIPS_NOREORDER 0x00000001 180 181 /* File contains position independent code. */ 182 #define EF_MIPS_PIC 0x00000002 183 184 /* Code in file uses the standard calling sequence for calling 185 position independent code. */ 186 #define EF_MIPS_CPIC 0x00000004 187 188 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */ 189 #define EF_MIPS_XGOT 0x00000008 190 191 /* Code in file uses UCODE (obsolete) */ 192 #define EF_MIPS_UCODE 0x00000010 193 194 /* Code in file uses new ABI (-n32 on Irix 6). */ 195 #define EF_MIPS_ABI2 0x00000020 196 197 /* Process the .MIPS.options section first by ld */ 198 #define EF_MIPS_OPTIONS_FIRST 0x00000080 199 200 /* Indicates code compiled for a 64-bit machine in 32-bit mode 201 (regs are 32-bits wide). */ 202 #define EF_MIPS_32BITMODE 0x00000100 203 204 /* 32-bit machine but FP registers are 64 bit (-mfp64). */ 205 #define EF_MIPS_FP64 0x00000200 206 207 /* Code in file uses the IEEE 754-2008 NaN encoding convention. */ 208 #define EF_MIPS_NAN2008 0x00000400 209 210 /* Architectural Extensions used by this file */ 211 #define EF_MIPS_ARCH_ASE 0x0f000000 212 213 /* Use MDMX multimedia extensions */ 214 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000 215 216 /* Use MIPS-16 ISA extensions */ 217 #define EF_MIPS_ARCH_ASE_M16 0x04000000 218 219 /* Use MICROMIPS ISA extensions. */ 220 #define EF_MIPS_ARCH_ASE_MICROMIPS 0x02000000 221 222 /* Four bit MIPS architecture field. */ 223 #define EF_MIPS_ARCH 0xf0000000 224 225 /* -mips1 code. */ 226 #define E_MIPS_ARCH_1 0x00000000 227 228 /* -mips2 code. */ 229 #define E_MIPS_ARCH_2 0x10000000 230 231 /* -mips3 code. */ 232 #define E_MIPS_ARCH_3 0x20000000 233 234 /* -mips4 code. */ 235 #define E_MIPS_ARCH_4 0x30000000 236 237 /* -mips5 code. */ 238 #define E_MIPS_ARCH_5 0x40000000 239 240 /* -mips32 code. */ 241 #define E_MIPS_ARCH_32 0x50000000 242 243 /* -mips64 code. */ 244 #define E_MIPS_ARCH_64 0x60000000 245 246 /* -mips32r2 code. */ 247 #define E_MIPS_ARCH_32R2 0x70000000 248 249 /* -mips64r2 code. */ 250 #define E_MIPS_ARCH_64R2 0x80000000 251 252 /* -mips32r6 code. */ 253 #define E_MIPS_ARCH_32R6 0x90000000 254 255 /* -mips64r6 code. */ 256 #define E_MIPS_ARCH_64R6 0xa0000000 257 258 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 259 #define EF_MIPS_ABI 0x0000F000 260 261 /* The original o32 abi. */ 262 #define E_MIPS_ABI_O32 0x00001000 263 264 /* O32 extended to work on 64 bit architectures */ 265 #define E_MIPS_ABI_O64 0x00002000 266 267 /* EABI in 32 bit mode */ 268 #define E_MIPS_ABI_EABI32 0x00003000 269 270 /* EABI in 64 bit mode */ 271 #define E_MIPS_ABI_EABI64 0x00004000 272 273 274 /* Machine variant if we know it. This field was invented at Cygnus, 275 but it is hoped that other vendors will adopt it. If some standard 276 is developed, this code should be changed to follow it. */ 277 278 #define EF_MIPS_MACH 0x00FF0000 279 280 /* Cygnus is choosing values between 80 and 9F; 281 00 - 7F should be left for a future standard; 282 the rest are open. */ 283 284 #define E_MIPS_MACH_3900 0x00810000 285 #define E_MIPS_MACH_4010 0x00820000 286 #define E_MIPS_MACH_4100 0x00830000 287 #define E_MIPS_MACH_4650 0x00850000 288 #define E_MIPS_MACH_4120 0x00870000 289 #define E_MIPS_MACH_4111 0x00880000 290 #define E_MIPS_MACH_SB1 0x008a0000 291 #define E_MIPS_MACH_OCTEON 0x008b0000 292 #define E_MIPS_MACH_XLR 0x008c0000 293 #define E_MIPS_MACH_OCTEON2 0x008d0000 294 #define E_MIPS_MACH_OCTEON3 0x008e0000 295 #define E_MIPS_MACH_5400 0x00910000 296 #define E_MIPS_MACH_5900 0x00920000 297 #define E_MIPS_MACH_5500 0x00980000 298 #define E_MIPS_MACH_9000 0x00990000 299 #define E_MIPS_MACH_LS2E 0x00A00000 300 #define E_MIPS_MACH_LS2F 0x00A10000 301 #define E_MIPS_MACH_LS3A 0x00A20000 302 303 /* Processor specific section indices. These sections do not actually 304 exist. Symbols with a st_shndx field corresponding to one of these 305 values have a special meaning. */ 306 307 /* Defined and allocated common symbol. Value is virtual address. If 308 relocated, alignment must be preserved. */ 309 #define SHN_MIPS_ACOMMON SHN_LORESERVE 310 311 /* Defined and allocated text symbol. Value is virtual address. 312 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 313 #define SHN_MIPS_TEXT (SHN_LORESERVE + 1) 314 315 /* Defined and allocated data symbol. Value is virtual address. 316 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 317 #define SHN_MIPS_DATA (SHN_LORESERVE + 2) 318 319 /* Small common symbol. */ 320 #define SHN_MIPS_SCOMMON (SHN_LORESERVE + 3) 321 322 /* Small undefined symbol. */ 323 #define SHN_MIPS_SUNDEFINED (SHN_LORESERVE + 4) 324 325 /* Processor specific section types. */ 326 327 /* Section contains the set of dynamic shared objects used when 328 statically linking. */ 329 #define SHT_MIPS_LIBLIST 0x70000000 330 331 /* I'm not sure what this is, but it's used on Irix 5. */ 332 #define SHT_MIPS_MSYM 0x70000001 333 334 /* Section contains list of symbols whose definitions conflict with 335 symbols defined in shared objects. */ 336 #define SHT_MIPS_CONFLICT 0x70000002 337 338 /* Section contains the global pointer table. */ 339 #define SHT_MIPS_GPTAB 0x70000003 340 341 /* Section contains microcode information. The exact format is 342 unspecified. */ 343 #define SHT_MIPS_UCODE 0x70000004 344 345 /* Section contains some sort of debugging information. The exact 346 format is unspecified. It's probably ECOFF symbols. */ 347 #define SHT_MIPS_DEBUG 0x70000005 348 349 /* Section contains register usage information. */ 350 #define SHT_MIPS_REGINFO 0x70000006 351 352 /* ??? */ 353 #define SHT_MIPS_PACKAGE 0x70000007 354 355 /* ??? */ 356 #define SHT_MIPS_PACKSYM 0x70000008 357 358 /* ??? */ 359 #define SHT_MIPS_RELD 0x70000009 360 361 /* Section contains interface information. */ 362 #define SHT_MIPS_IFACE 0x7000000b 363 364 /* Section contains description of contents of another section. */ 365 #define SHT_MIPS_CONTENT 0x7000000c 366 367 /* Section contains miscellaneous options. */ 368 #define SHT_MIPS_OPTIONS 0x7000000d 369 370 /* ??? */ 371 #define SHT_MIPS_SHDR 0x70000010 372 373 /* ??? */ 374 #define SHT_MIPS_FDESC 0x70000011 375 376 /* ??? */ 377 #define SHT_MIPS_EXTSYM 0x70000012 378 379 /* ??? */ 380 #define SHT_MIPS_DENSE 0x70000013 381 382 /* ??? */ 383 #define SHT_MIPS_PDESC 0x70000014 384 385 /* ??? */ 386 #define SHT_MIPS_LOCSYM 0x70000015 387 388 /* ??? */ 389 #define SHT_MIPS_AUXSYM 0x70000016 390 391 /* ??? */ 392 #define SHT_MIPS_OPTSYM 0x70000017 393 394 /* ??? */ 395 #define SHT_MIPS_LOCSTR 0x70000018 396 397 /* ??? */ 398 #define SHT_MIPS_LINE 0x70000019 399 400 /* ??? */ 401 #define SHT_MIPS_RFDESC 0x7000001a 402 403 /* Delta C++: symbol table */ 404 #define SHT_MIPS_DELTASYM 0x7000001b 405 406 /* Delta C++: instance table */ 407 #define SHT_MIPS_DELTAINST 0x7000001c 408 409 /* Delta C++: class table */ 410 #define SHT_MIPS_DELTACLASS 0x7000001d 411 412 /* DWARF debugging section. */ 413 #define SHT_MIPS_DWARF 0x7000001e 414 415 /* Delta C++: declarations */ 416 #define SHT_MIPS_DELTADECL 0x7000001f 417 418 /* List of libraries the binary depends on. Includes a time stamp, version 419 number. */ 420 #define SHT_MIPS_SYMBOL_LIB 0x70000020 421 422 /* Events section. */ 423 #define SHT_MIPS_EVENTS 0x70000021 424 425 /* ??? */ 426 #define SHT_MIPS_TRANSLATE 0x70000022 427 428 /* Special pixie sections */ 429 #define SHT_MIPS_PIXIE 0x70000023 430 431 /* Address translation table (for debug info) */ 432 #define SHT_MIPS_XLATE 0x70000024 433 434 /* SGI internal address translation table (for debug info) */ 435 #define SHT_MIPS_XLATE_DEBUG 0x70000025 436 437 /* Intermediate code */ 438 #define SHT_MIPS_WHIRL 0x70000026 439 440 /* C++ exception handling region info */ 441 #define SHT_MIPS_EH_REGION 0x70000027 442 443 /* Obsolete address translation table (for debug info) */ 444 #define SHT_MIPS_XLATE_OLD 0x70000028 445 446 /* Runtime procedure descriptor table exception information (ucode) ??? */ 447 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 448 449 /* ABI related flags section. */ 450 #define SHT_MIPS_ABIFLAGS 0x7000002a 451 452 /* A section of type SHT_MIPS_LIBLIST contains an array of the 453 following structure. The sh_link field is the section index of the 454 string table. The sh_info field is the number of entries in the 455 section. */ 456 typedef struct 457 { 458 /* String table index for name of shared object. */ 459 unsigned long l_name; 460 /* Time stamp. */ 461 unsigned long l_time_stamp; 462 /* Checksum of symbol names and common sizes. */ 463 unsigned long l_checksum; 464 /* String table index for version. */ 465 unsigned long l_version; 466 /* Flags. */ 467 unsigned long l_flags; 468 } Elf32_Lib; 469 470 /* The external version of Elf32_Lib. */ 471 typedef struct 472 { 473 unsigned char l_name[4]; 474 unsigned char l_time_stamp[4]; 475 unsigned char l_checksum[4]; 476 unsigned char l_version[4]; 477 unsigned char l_flags[4]; 478 } Elf32_External_Lib; 479 480 /* The l_flags field of an Elf32_Lib structure may contain the 481 following flags. */ 482 483 /* Require an exact match at runtime. */ 484 #define LL_EXACT_MATCH 0x00000001 485 486 /* Ignore version incompatibilities at runtime. */ 487 #define LL_IGNORE_INT_VER 0x00000002 488 489 /* Require matching minor version number. */ 490 #define LL_REQUIRE_MINOR 0x00000004 491 492 /* ??? */ 493 #define LL_EXPORTS 0x00000008 494 495 /* Delay loading of this library until really needed. */ 496 #define LL_DELAY_LOAD 0x00000010 497 498 /* ??? Delta C++ stuff ??? */ 499 #define LL_DELTA 0x00000020 500 501 502 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 503 .dynsym section. Each element has the following type. */ 504 typedef unsigned long Elf32_Conflict; 505 typedef unsigned char Elf32_External_Conflict[4]; 506 507 typedef unsigned long Elf64_Conflict; 508 typedef unsigned char Elf64_External_Conflict[8]; 509 510 /* A section of type SHT_MIPS_GPTAB contains information about how 511 much GP space would be required for different -G arguments. This 512 information is only used so that the linker can provide informative 513 suggestions as to the best -G value to use. The sh_info field is 514 the index of the section for which this information applies. The 515 contents of the section are an array of the following union. The 516 first element uses the gt_header field. The remaining elements use 517 the gt_entry field. */ 518 typedef union 519 { 520 struct 521 { 522 /* -G value actually used for this object file. */ 523 unsigned long gt_current_g_value; 524 /* Unused. */ 525 unsigned long gt_unused; 526 } gt_header; 527 struct 528 { 529 /* If this -G argument has been used... */ 530 unsigned long gt_g_value; 531 /* ...this many GP section bytes would be required. */ 532 unsigned long gt_bytes; 533 } gt_entry; 534 } Elf32_gptab; 535 536 /* The external version of Elf32_gptab. */ 537 538 typedef union 539 { 540 struct 541 { 542 unsigned char gt_current_g_value[4]; 543 unsigned char gt_unused[4]; 544 } gt_header; 545 struct 546 { 547 unsigned char gt_g_value[4]; 548 unsigned char gt_bytes[4]; 549 } gt_entry; 550 } Elf32_External_gptab; 551 552 /* A section of type SHT_MIPS_REGINFO contains the following 553 structure. */ 554 typedef struct 555 { 556 /* Mask of general purpose registers used. */ 557 unsigned long ri_gprmask; 558 /* Mask of co-processor registers used. */ 559 unsigned long ri_cprmask[4]; 560 /* GP register value for this object file. */ 561 long ri_gp_value; 562 } Elf32_RegInfo; 563 564 /* The external version of the Elf_RegInfo structure. */ 565 typedef struct 566 { 567 unsigned char ri_gprmask[4]; 568 unsigned char ri_cprmask[4][4]; 569 unsigned char ri_gp_value[4]; 570 } Elf32_External_RegInfo; 571 572 /* MIPS ELF .reginfo swapping routines. */ 573 extern void bfd_mips_elf32_swap_reginfo_in 574 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 575 extern void bfd_mips_elf32_swap_reginfo_out 576 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 577 578 /* Processor specific section flags. */ 579 580 /* This section must be in the global data area. */ 581 #define SHF_MIPS_GPREL 0x10000000 582 583 /* This section should be merged. */ 584 #define SHF_MIPS_MERGE 0x20000000 585 586 /* This section contains address data of size implied by section 587 element size. */ 588 #define SHF_MIPS_ADDR 0x40000000 589 590 /* This section contains string data. */ 591 #define SHF_MIPS_STRING 0x80000000 592 593 /* This section may not be stripped. */ 594 #define SHF_MIPS_NOSTRIP 0x08000000 595 596 /* This section is local to threads. */ 597 #define SHF_MIPS_LOCAL 0x04000000 598 599 /* Linker should generate implicit weak names for this section. */ 600 #define SHF_MIPS_NAMES 0x02000000 601 602 /* Section contais text/data which may be replicated in other sections. 603 Linker should retain only one copy. */ 604 #define SHF_MIPS_NODUPES 0x01000000 605 606 /* Processor specific program header types. */ 607 608 /* Register usage information. Identifies one .reginfo section. */ 609 #define PT_MIPS_REGINFO 0x70000000 610 611 /* Runtime procedure table. */ 612 #define PT_MIPS_RTPROC 0x70000001 613 614 /* .MIPS.options section. */ 615 #define PT_MIPS_OPTIONS 0x70000002 616 617 /* Records ABI related flags. */ 618 #define PT_MIPS_ABIFLAGS 0x70000003 619 620 /* Processor specific dynamic array tags. */ 621 622 /* 32 bit version number for runtime linker interface. */ 623 #define DT_MIPS_RLD_VERSION 0x70000001 624 625 /* Time stamp. */ 626 #define DT_MIPS_TIME_STAMP 0x70000002 627 628 /* Checksum of external strings and common sizes. */ 629 #define DT_MIPS_ICHECKSUM 0x70000003 630 631 /* Index of version string in string table. */ 632 #define DT_MIPS_IVERSION 0x70000004 633 634 /* 32 bits of flags. */ 635 #define DT_MIPS_FLAGS 0x70000005 636 637 /* Base address of the segment. */ 638 #define DT_MIPS_BASE_ADDRESS 0x70000006 639 640 /* ??? */ 641 #define DT_MIPS_MSYM 0x70000007 642 643 /* Address of .conflict section. */ 644 #define DT_MIPS_CONFLICT 0x70000008 645 646 /* Address of .liblist section. */ 647 #define DT_MIPS_LIBLIST 0x70000009 648 649 /* Number of local global offset table entries. */ 650 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 651 652 /* Number of entries in the .conflict section. */ 653 #define DT_MIPS_CONFLICTNO 0x7000000b 654 655 /* Number of entries in the .liblist section. */ 656 #define DT_MIPS_LIBLISTNO 0x70000010 657 658 /* Number of entries in the .dynsym section. */ 659 #define DT_MIPS_SYMTABNO 0x70000011 660 661 /* Index of first external dynamic symbol not referenced locally. */ 662 #define DT_MIPS_UNREFEXTNO 0x70000012 663 664 /* Index of first dynamic symbol in global offset table. */ 665 #define DT_MIPS_GOTSYM 0x70000013 666 667 /* Number of page table entries in global offset table. */ 668 #define DT_MIPS_HIPAGENO 0x70000014 669 670 /* Address of run time loader map, used for debugging. */ 671 #define DT_MIPS_RLD_MAP 0x70000016 672 673 /* Delta C++ class definition. */ 674 #define DT_MIPS_DELTA_CLASS 0x70000017 675 676 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 677 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 678 679 /* Delta C++ class instances. */ 680 #define DT_MIPS_DELTA_INSTANCE 0x70000019 681 682 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 683 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 684 685 /* Delta relocations. */ 686 #define DT_MIPS_DELTA_RELOC 0x7000001b 687 688 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 689 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 690 691 /* Delta symbols that Delta relocations refer to. */ 692 #define DT_MIPS_DELTA_SYM 0x7000001d 693 694 /* Number of entries in DT_MIPS_DELTA_SYM. */ 695 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 696 697 /* Delta symbols that hold class declarations. */ 698 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 699 700 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 701 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 702 703 /* Flags indicating information about C++ flavor. */ 704 #define DT_MIPS_CXX_FLAGS 0x70000022 705 706 /* Pixie information (???). */ 707 #define DT_MIPS_PIXIE_INIT 0x70000023 708 709 /* Address of .MIPS.symlib */ 710 #define DT_MIPS_SYMBOL_LIB 0x70000024 711 712 /* The GOT index of the first PTE for a segment */ 713 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 714 715 /* The GOT index of the first PTE for a local symbol */ 716 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 717 718 /* The GOT index of the first PTE for a hidden symbol */ 719 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 720 721 /* The GOT index of the first PTE for a protected symbol */ 722 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 723 724 /* Address of `.MIPS.options'. */ 725 #define DT_MIPS_OPTIONS 0x70000029 726 727 /* Address of `.interface'. */ 728 #define DT_MIPS_INTERFACE 0x7000002a 729 730 /* ??? */ 731 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 732 733 /* Size of the .interface section. */ 734 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 735 736 /* Size of rld_text_resolve function stored in the GOT. */ 737 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 738 739 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 740 #define DT_MIPS_PERF_SUFFIX 0x7000002e 741 742 /* Size of compact relocation section (O32). */ 743 #define DT_MIPS_COMPACT_SIZE 0x7000002f 744 745 /* GP value for auxiliary GOTs. */ 746 #define DT_MIPS_GP_VALUE 0x70000030 747 748 /* Address of auxiliary .dynamic. */ 749 #define DT_MIPS_AUX_DYNAMIC 0x70000031 750 751 /* Address of the base of the PLTGOT. */ 752 #define DT_MIPS_PLTGOT 0x70000032 753 754 /* Points to the base of a writable PLT. */ 755 #define DT_MIPS_RWPLT 0x70000034 756 757 /* Relative offset of run time loader map, used for debugging. */ 758 #define DT_MIPS_RLD_MAP_REL 0x70000035 759 760 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 761 762 /* No flags. */ 763 #define RHF_NONE 0x00000000 764 765 /* Uses shortcut pointers. */ 766 #define RHF_QUICKSTART 0x00000001 767 768 /* Hash size is not a power of two. */ 769 #define RHF_NOTPOT 0x00000002 770 771 /* Ignore LD_LIBRARY_PATH. */ 772 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 773 774 /* DSO address may not be relocated. */ 775 #define RHF_NO_MOVE 0x00000008 776 777 /* SGI specific features. */ 778 #define RHF_SGI_ONLY 0x00000010 779 780 /* Guarantee that .init will finish executing before any non-init 781 code in DSO is called. */ 782 #define RHF_GUARANTEE_INIT 0x00000020 783 784 /* Contains Delta C++ code. */ 785 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 786 787 /* Guarantee that .init will start executing before any non-init 788 code in DSO is called. */ 789 #define RHF_GUARANTEE_START_INIT 0x00000080 790 791 /* Generated by pixie. */ 792 #define RHF_PIXIE 0x00000100 793 794 /* Delay-load DSO by default. */ 795 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 796 797 /* Object may be requickstarted */ 798 #define RHF_REQUICKSTART 0x00000400 799 800 /* Object has been requickstarted */ 801 #define RHF_REQUICKSTARTED 0x00000800 802 803 /* Generated by cord. */ 804 #define RHF_CORD 0x00001000 805 806 /* Object contains no unresolved undef symbols. */ 807 #define RHF_NO_UNRES_UNDEF 0x00002000 808 809 /* Symbol table is in a safe order. */ 810 #define RHF_RLD_ORDER_SAFE 0x00004000 811 812 /* Special values for the st_other field in the symbol table. These 813 are used in an Irix 5 dynamic symbol table. */ 814 815 #define STO_DEFAULT STV_DEFAULT 816 #define STO_INTERNAL STV_INTERNAL 817 #define STO_HIDDEN STV_HIDDEN 818 #define STO_PROTECTED STV_PROTECTED 819 820 /* Two topmost bits denote the MIPS ISA for .text symbols: 821 + 00 -- standard MIPS code, 822 + 10 -- microMIPS code, 823 + 11 -- MIPS16 code; requires the following two bits to be set too. 824 Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC. See below 825 for details. */ 826 #define STO_MIPS_ISA (3 << 6) 827 828 /* The mask spanning the rest of MIPS psABI flags. At most one is expected 829 to be set except for STO_MIPS16. */ 830 #define STO_MIPS_FLAGS (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1))) 831 832 /* The MIPS psABI was updated in 2008 with support for PLTs and copy 833 relocs. There are therefore two types of nonzero SHN_UNDEF functions: 834 PLT entries and traditional MIPS lazy binding stubs. We mark the former 835 with STO_MIPS_PLT to distinguish them from the latter. */ 836 #define STO_MIPS_PLT 0x8 837 #define ELF_ST_IS_MIPS_PLT(other) \ 838 ((ELF_ST_IS_MIPS16 (other) \ 839 ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS)) \ 840 : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT) 841 #define ELF_ST_SET_MIPS_PLT(other) \ 842 ((ELF_ST_IS_MIPS16 (other) \ 843 ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS)) \ 844 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT) 845 846 /* This value is used to mark PIC functions in an object that mixes 847 PIC and non-PIC. Note that this bit overlaps with STO_MIPS16, 848 although MIPS16 symbols are never considered to be MIPS_PIC. */ 849 #define STO_MIPS_PIC 0x20 850 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC) 851 #define ELF_ST_SET_MIPS_PIC(other) \ 852 ((ELF_ST_IS_MIPS16 (other) \ 853 ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS)) \ 854 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC) 855 856 /* This value is used for a mips16 .text symbol. */ 857 #define STO_MIPS16 0xf0 858 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16) 859 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16) 860 861 /* This value is used for a microMIPS .text symbol. To distinguish from 862 STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS. The 863 mask is STO_MIPS_ISA. */ 864 #define STO_MICROMIPS (2 << 6) 865 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS) 866 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS) 867 868 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) 869 has been indicated for a .text symbol. */ 870 #define ELF_ST_IS_COMPRESSED(other) \ 871 (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other)) 872 873 /* This bit is used on Irix to indicate a symbol whose definition 874 is optional - if, at final link time, it cannot be found, no 875 error message should be produced. */ 876 #define STO_OPTIONAL (1 << 2) 877 /* A macro to examine the STO_OPTIONAL bit. */ 878 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 879 880 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 881 relocation entry specifies up to three actual relocations, all at 882 the same address. The first relocation which required a symbol 883 uses the symbol in the r_sym field. The second relocation which 884 requires a symbol uses the symbol in the r_ssym field. If all 885 three relocations require a symbol, the third one uses a zero 886 value. */ 887 888 /* An entry in a 64 bit SHT_REL section. */ 889 890 typedef struct 891 { 892 /* Address of relocation. */ 893 unsigned char r_offset[8]; 894 /* Symbol index. */ 895 unsigned char r_sym[4]; 896 /* Special symbol. */ 897 unsigned char r_ssym[1]; 898 /* Third relocation. */ 899 unsigned char r_type3[1]; 900 /* Second relocation. */ 901 unsigned char r_type2[1]; 902 /* First relocation. */ 903 unsigned char r_type[1]; 904 } Elf64_Mips_External_Rel; 905 906 typedef struct 907 { 908 /* Address of relocation. */ 909 bfd_vma r_offset; 910 /* Symbol index. */ 911 unsigned long r_sym; 912 /* Special symbol. */ 913 unsigned char r_ssym; 914 /* Third relocation. */ 915 unsigned char r_type3; 916 /* Second relocation. */ 917 unsigned char r_type2; 918 /* First relocation. */ 919 unsigned char r_type; 920 } Elf64_Mips_Internal_Rel; 921 922 /* An entry in a 64 bit SHT_RELA section. */ 923 924 typedef struct 925 { 926 /* Address of relocation. */ 927 unsigned char r_offset[8]; 928 /* Symbol index. */ 929 unsigned char r_sym[4]; 930 /* Special symbol. */ 931 unsigned char r_ssym[1]; 932 /* Third relocation. */ 933 unsigned char r_type3[1]; 934 /* Second relocation. */ 935 unsigned char r_type2[1]; 936 /* First relocation. */ 937 unsigned char r_type[1]; 938 /* Addend. */ 939 unsigned char r_addend[8]; 940 } Elf64_Mips_External_Rela; 941 942 typedef struct 943 { 944 /* Address of relocation. */ 945 bfd_vma r_offset; 946 /* Symbol index. */ 947 unsigned long r_sym; 948 /* Special symbol. */ 949 unsigned char r_ssym; 950 /* Third relocation. */ 951 unsigned char r_type3; 952 /* Second relocation. */ 953 unsigned char r_type2; 954 /* First relocation. */ 955 unsigned char r_type; 956 /* Addend. */ 957 bfd_signed_vma r_addend; 958 } Elf64_Mips_Internal_Rela; 959 960 /* MIPS ELF 64 relocation info access macros. */ 961 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 962 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 963 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 964 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 965 966 /* Values found in the r_ssym field of a relocation entry. */ 967 968 /* No relocation. */ 969 #define RSS_UNDEF 0 970 971 /* Value of GP. */ 972 #define RSS_GP 1 973 974 /* Value of GP in object being relocated. */ 975 #define RSS_GP0 2 976 977 /* Address of location being relocated. */ 978 #define RSS_LOC 3 979 980 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 981 which starts with this header. */ 982 983 typedef struct 984 { 985 /* Type of option. */ 986 unsigned char kind[1]; 987 /* Size of option descriptor, including header. */ 988 unsigned char size[1]; 989 /* Section index of affected section, or 0 for global option. */ 990 unsigned char section[2]; 991 /* Information specific to this kind of option. */ 992 unsigned char info[4]; 993 } Elf_External_Options; 994 995 typedef struct 996 { 997 /* Type of option. */ 998 unsigned char kind; 999 /* Size of option descriptor, including header. */ 1000 unsigned char size; 1001 /* Section index of affected section, or 0 for global option. */ 1002 unsigned short section; 1003 /* Information specific to this kind of option. */ 1004 unsigned long info; 1005 } Elf_Internal_Options; 1006 1007 /* MIPS ELF option header swapping routines. */ 1008 extern void bfd_mips_elf_swap_options_in 1009 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 1010 extern void bfd_mips_elf_swap_options_out 1011 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 1012 1013 /* Values which may appear in the kind field of an Elf_Options 1014 structure. */ 1015 1016 /* Undefined. */ 1017 #define ODK_NULL 0 1018 1019 /* Register usage and GP value. */ 1020 #define ODK_REGINFO 1 1021 1022 /* Exception processing information. */ 1023 #define ODK_EXCEPTIONS 2 1024 1025 /* Section padding information. */ 1026 #define ODK_PAD 3 1027 1028 /* Hardware workarounds performed. */ 1029 #define ODK_HWPATCH 4 1030 1031 /* Fill value used by the linker. */ 1032 #define ODK_FILL 5 1033 1034 /* Reserved space for desktop tools. */ 1035 #define ODK_TAGS 6 1036 1037 /* Hardware workarounds, AND bits when merging. */ 1038 #define ODK_HWAND 7 1039 1040 /* Hardware workarounds, OR bits when merging. */ 1041 #define ODK_HWOR 8 1042 1043 /* GP group to use for text/data sections. */ 1044 #define ODK_GP_GROUP 9 1045 1046 /* ID information. */ 1047 #define ODK_IDENT 10 1048 1049 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 1050 structure. In the 64 bit ABI, it is the following structure. The 1051 info field of the options header is not used. */ 1052 1053 typedef struct 1054 { 1055 /* Mask of general purpose registers used. */ 1056 unsigned char ri_gprmask[4]; 1057 /* Padding. */ 1058 unsigned char ri_pad[4]; 1059 /* Mask of co-processor registers used. */ 1060 unsigned char ri_cprmask[4][4]; 1061 /* GP register value for this object file. */ 1062 unsigned char ri_gp_value[8]; 1063 } Elf64_External_RegInfo; 1064 1065 typedef struct 1066 { 1067 /* Mask of general purpose registers used. */ 1068 unsigned long ri_gprmask; 1069 /* Padding. */ 1070 unsigned long ri_pad; 1071 /* Mask of co-processor registers used. */ 1072 unsigned long ri_cprmask[4]; 1073 /* GP register value for this object file. */ 1074 bfd_vma ri_gp_value; 1075 } Elf64_Internal_RegInfo; 1076 1077 /* ABI Flags structure version 0. */ 1078 1079 typedef struct 1080 { 1081 /* Version of flags structure. */ 1082 unsigned char version[2]; 1083 /* The level of the ISA: 1-5, 32, 64. */ 1084 unsigned char isa_level[1]; 1085 /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise. */ 1086 unsigned char isa_rev[1]; 1087 /* The size of general purpose registers. */ 1088 unsigned char gpr_size[1]; 1089 /* The size of co-processor 1 registers. */ 1090 unsigned char cpr1_size[1]; 1091 /* The size of co-processor 2 registers. */ 1092 unsigned char cpr2_size[1]; 1093 /* The floating-point ABI. */ 1094 unsigned char fp_abi[1]; 1095 /* Processor-specific extension. */ 1096 unsigned char isa_ext[4]; 1097 /* Mask of ASEs used. */ 1098 unsigned char ases[4]; 1099 /* Mask of general flags. */ 1100 unsigned char flags1[4]; 1101 unsigned char flags2[4]; 1102 } Elf_External_ABIFlags_v0; 1103 1104 typedef struct 1105 { 1106 /* Version of flags structure. */ 1107 unsigned short version; 1108 /* The level of the ISA: 1-5, 32, 64. */ 1109 unsigned char isa_level; 1110 /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise. */ 1111 unsigned char isa_rev; 1112 /* The size of general purpose registers. */ 1113 unsigned char gpr_size; 1114 /* The size of co-processor 1 registers. */ 1115 unsigned char cpr1_size; 1116 /* The size of co-processor 2 registers. */ 1117 unsigned char cpr2_size; 1118 /* The floating-point ABI. */ 1119 unsigned char fp_abi; 1120 /* Processor-specific extension. */ 1121 unsigned long isa_ext; 1122 /* Mask of ASEs used. */ 1123 unsigned long ases; 1124 /* Mask of general flags. */ 1125 unsigned long flags1; 1126 unsigned long flags2; 1127 } Elf_Internal_ABIFlags_v0; 1128 1129 typedef struct 1130 { 1131 /* The hash value computed from the name of the corresponding 1132 dynamic symbol. */ 1133 unsigned char ms_hash_value[4]; 1134 /* Contains both the dynamic relocation index and the symbol flags 1135 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 1136 to access the individual values. The dynamic relocation index 1137 identifies the first entry in the .rel.dyn section that 1138 references the dynamic symbol corresponding to this msym entry. 1139 If the index is 0, no dynamic relocations are associated with the 1140 symbol. The symbol flags field is reserved for future use. */ 1141 unsigned char ms_info[4]; 1142 } Elf32_External_Msym; 1143 1144 typedef struct 1145 { 1146 /* The hash value computed from the name of the corresponding 1147 dynamic symbol. */ 1148 unsigned long ms_hash_value; 1149 /* Contains both the dynamic relocation index and the symbol flags 1150 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 1151 to access the individual values. The dynamic relocation index 1152 identifies the first entry in the .rel.dyn section that 1153 references the dynamic symbol corresponding to this msym entry. 1154 If the index is 0, no dynamic relocations are associated with the 1155 symbol. The symbol flags field is reserved for future use. */ 1156 unsigned long ms_info; 1157 } Elf32_Internal_Msym; 1158 1159 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 1160 #define ELF32_MS_FLAGS(i) (i) & 0xff) 1161 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 1162 1163 /* MIPS ELF reginfo swapping routines. */ 1164 extern void bfd_mips_elf64_swap_reginfo_in 1165 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 1166 extern void bfd_mips_elf64_swap_reginfo_out 1167 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 1168 1169 /* MIPS ELF flags swapping routines. */ 1170 extern void bfd_mips_elf_swap_abiflags_v0_in 1171 (bfd *, const Elf_External_ABIFlags_v0 *, Elf_Internal_ABIFlags_v0 *); 1172 extern void bfd_mips_elf_swap_abiflags_v0_out 1173 (bfd *, const Elf_Internal_ABIFlags_v0 *, Elf_External_ABIFlags_v0 *); 1174 1175 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 1176 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 1177 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 1178 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 1179 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 1180 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 1181 exceptions (debug mode). */ 1182 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 1183 1184 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 1185 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 1186 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 1187 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 1188 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 1189 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 1190 1191 /* Masks for the info word of an ODK_PAD descriptor. */ 1192 #define OPAD_PREFIX 0x01 1193 #define OPAD_POSTFIX 0x02 1194 #define OPAD_SYMBOL 0x04 1195 1196 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 1197 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 1198 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 1199 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 1200 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 1201 (clean == 1). */ 1202 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 1203 load patch. */ 1204 1205 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1206 #define OGP_GROUP 0x0000ffff /* GP group number. */ 1207 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1208 1209 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1210 #define OHWA0_R4KEOP_CHECKED 0x00000001 1211 #define OHWA0_R4KEOP_CLEAN 0x00000002 1212 1213 /* Values for the xxx_size bytes of an ABI flags structure. */ 1214 1215 #define AFL_REG_NONE 0x00 /* No registers. */ 1216 #define AFL_REG_32 0x01 /* 32-bit registers. */ 1217 #define AFL_REG_64 0x02 /* 64-bit registers. */ 1218 #define AFL_REG_128 0x03 /* 128-bit registers. */ 1219 1220 /* Masks for the ases word of an ABI flags structure. */ 1221 1222 #define AFL_ASE_DSP 0x00000001 /* DSP ASE. */ 1223 #define AFL_ASE_DSPR2 0x00000002 /* DSP R2 ASE. */ 1224 #define AFL_ASE_EVA 0x00000004 /* Enhanced VA Scheme. */ 1225 #define AFL_ASE_MCU 0x00000008 /* MCU (MicroController) ASE. */ 1226 #define AFL_ASE_MDMX 0x00000010 /* MDMX ASE. */ 1227 #define AFL_ASE_MIPS3D 0x00000020 /* MIPS-3D ASE. */ 1228 #define AFL_ASE_MT 0x00000040 /* MT ASE. */ 1229 #define AFL_ASE_SMARTMIPS 0x00000080 /* SmartMIPS ASE. */ 1230 #define AFL_ASE_VIRT 0x00000100 /* VZ ASE. */ 1231 #define AFL_ASE_MSA 0x00000200 /* MSA ASE. */ 1232 #define AFL_ASE_MIPS16 0x00000400 /* MIPS16 ASE. */ 1233 #define AFL_ASE_MICROMIPS 0x00000800 /* MICROMIPS ASE. */ 1234 #define AFL_ASE_XPA 0x00001000 /* XPA ASE. */ 1235 #define AFL_ASE_DSPR3 0x00002000 /* DSP R3 ASE. */ 1236 #define AFL_ASE_MASK 0x00003fff /* All ASEs. */ 1237 1238 /* Values for the isa_ext word of an ABI flags structure. */ 1239 1240 #define AFL_EXT_XLR 1 /* RMI Xlr instruction. */ 1241 #define AFL_EXT_OCTEON2 2 /* Cavium Networks Octeon2. */ 1242 #define AFL_EXT_OCTEONP 3 /* Cavium Networks OcteonP. */ 1243 #define AFL_EXT_LOONGSON_3A 4 /* Loongson 3A. */ 1244 #define AFL_EXT_OCTEON 5 /* Cavium Networks Octeon. */ 1245 #define AFL_EXT_5900 6 /* MIPS R5900 instruction. */ 1246 #define AFL_EXT_4650 7 /* MIPS R4650 instruction. */ 1247 #define AFL_EXT_4010 8 /* LSI R4010 instruction. */ 1248 #define AFL_EXT_4100 9 /* NEC VR4100 instruction. */ 1249 #define AFL_EXT_3900 10 /* Toshiba R3900 instruction. */ 1250 #define AFL_EXT_10000 11 /* MIPS R10000 instruction. */ 1251 #define AFL_EXT_SB1 12 /* Broadcom SB-1 instruction. */ 1252 #define AFL_EXT_4111 13 /* NEC VR4111/VR4181 instruction. */ 1253 #define AFL_EXT_4120 14 /* NEC VR4120 instruction. */ 1254 #define AFL_EXT_5400 15 /* NEC VR5400 instruction. */ 1255 #define AFL_EXT_5500 16 /* NEC VR5500 instruction. */ 1256 #define AFL_EXT_LOONGSON_2E 17 /* ST Microelectronics Loongson 2E. */ 1257 #define AFL_EXT_LOONGSON_2F 18 /* ST Microelectronics Loongson 2F. */ 1258 #define AFL_EXT_OCTEON3 19 /* Cavium Networks Octeon3. */ 1259 1260 /* Masks for the flags1 word of an ABI flags structure. */ 1261 #define AFL_FLAGS1_ODDSPREG 1 /* Uses odd single-precision registers. */ 1262 1263 extern unsigned int bfd_mips_isa_ext (bfd *); 1264 1265 1266 /* Object attribute tags. */ 1267 enum 1268 { 1269 /* 0-3 are generic. */ 1270 1271 /* Floating-point ABI used by this object file. */ 1272 Tag_GNU_MIPS_ABI_FP = 4, 1273 1274 /* MSA ABI used by this object file. */ 1275 Tag_GNU_MIPS_ABI_MSA = 8, 1276 }; 1277 1278 /* Object attribute values. */ 1279 enum 1280 { 1281 /* Values defined for Tag_GNU_MIPS_ABI_FP. */ 1282 1283 /* Not tagged or not using any ABIs affected by the differences. */ 1284 Val_GNU_MIPS_ABI_FP_ANY = 0, 1285 1286 /* Using hard-float -mdouble-float. */ 1287 Val_GNU_MIPS_ABI_FP_DOUBLE = 1, 1288 1289 /* Using hard-float -msingle-float. */ 1290 Val_GNU_MIPS_ABI_FP_SINGLE = 2, 1291 1292 /* Using soft-float. */ 1293 Val_GNU_MIPS_ABI_FP_SOFT = 3, 1294 1295 /* Using -mips32r2 -mfp64. */ 1296 Val_GNU_MIPS_ABI_FP_OLD_64 = 4, 1297 1298 /* Using -mfpxx */ 1299 Val_GNU_MIPS_ABI_FP_XX = 5, 1300 1301 /* Using -mips32r2 -mfp64. */ 1302 Val_GNU_MIPS_ABI_FP_64 = 6, 1303 1304 /* Using -mips32r2 -mfp64 -mno-odd-spreg. */ 1305 Val_GNU_MIPS_ABI_FP_64A = 7, 1306 1307 /* This is reserved for backward-compatibility with an earlier 1308 implementation of the MIPS NaN2008 functionality. */ 1309 Val_GNU_MIPS_ABI_FP_NAN2008 = 8, 1310 1311 /* Values defined for Tag_GNU_MIPS_ABI_MSA. */ 1312 1313 /* Not tagged or not using any ABIs affected by the differences. */ 1314 Val_GNU_MIPS_ABI_MSA_ANY = 0, 1315 1316 /* Using 128-bit MSA. */ 1317 Val_GNU_MIPS_ABI_MSA_128 = 1, 1318 }; 1319 1320 #ifdef __cplusplus 1321 } 1322 #endif 1323 1324 #endif /* _ELF_MIPS_H */ 1325