1 /* MIPS ELF support for BFD. 2 Copyright (C) 1993-2019 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_IAMR2 0x00930000 298 #define E_MIPS_MACH_5500 0x00980000 299 #define E_MIPS_MACH_9000 0x00990000 300 #define E_MIPS_MACH_LS2E 0x00A00000 301 #define E_MIPS_MACH_LS2F 0x00A10000 302 #define E_MIPS_MACH_GS464 0x00A20000 303 #define E_MIPS_MACH_GS464E 0x00A30000 304 #define E_MIPS_MACH_GS264E 0x00A40000 305 306 /* Processor specific section indices. These sections do not actually 307 exist. Symbols with a st_shndx field corresponding to one of these 308 values have a special meaning. */ 309 310 /* Defined and allocated common symbol. Value is virtual address. If 311 relocated, alignment must be preserved. */ 312 #define SHN_MIPS_ACOMMON SHN_LORESERVE 313 314 /* Defined and allocated text symbol. Value is virtual address. 315 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 316 #define SHN_MIPS_TEXT (SHN_LORESERVE + 1) 317 318 /* Defined and allocated data symbol. Value is virtual address. 319 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 320 #define SHN_MIPS_DATA (SHN_LORESERVE + 2) 321 322 /* Small common symbol. */ 323 #define SHN_MIPS_SCOMMON (SHN_LORESERVE + 3) 324 325 /* Small undefined symbol. */ 326 #define SHN_MIPS_SUNDEFINED (SHN_LORESERVE + 4) 327 328 /* Processor specific section types. */ 329 330 /* Section contains the set of dynamic shared objects used when 331 statically linking. */ 332 #define SHT_MIPS_LIBLIST 0x70000000 333 334 /* I'm not sure what this is, but it's used on Irix 5. */ 335 #define SHT_MIPS_MSYM 0x70000001 336 337 /* Section contains list of symbols whose definitions conflict with 338 symbols defined in shared objects. */ 339 #define SHT_MIPS_CONFLICT 0x70000002 340 341 /* Section contains the global pointer table. */ 342 #define SHT_MIPS_GPTAB 0x70000003 343 344 /* Section contains microcode information. The exact format is 345 unspecified. */ 346 #define SHT_MIPS_UCODE 0x70000004 347 348 /* Section contains some sort of debugging information. The exact 349 format is unspecified. It's probably ECOFF symbols. */ 350 #define SHT_MIPS_DEBUG 0x70000005 351 352 /* Section contains register usage information. */ 353 #define SHT_MIPS_REGINFO 0x70000006 354 355 /* ??? */ 356 #define SHT_MIPS_PACKAGE 0x70000007 357 358 /* ??? */ 359 #define SHT_MIPS_PACKSYM 0x70000008 360 361 /* ??? */ 362 #define SHT_MIPS_RELD 0x70000009 363 364 /* Section contains interface information. */ 365 #define SHT_MIPS_IFACE 0x7000000b 366 367 /* Section contains description of contents of another section. */ 368 #define SHT_MIPS_CONTENT 0x7000000c 369 370 /* Section contains miscellaneous options. */ 371 #define SHT_MIPS_OPTIONS 0x7000000d 372 373 /* ??? */ 374 #define SHT_MIPS_SHDR 0x70000010 375 376 /* ??? */ 377 #define SHT_MIPS_FDESC 0x70000011 378 379 /* ??? */ 380 #define SHT_MIPS_EXTSYM 0x70000012 381 382 /* ??? */ 383 #define SHT_MIPS_DENSE 0x70000013 384 385 /* ??? */ 386 #define SHT_MIPS_PDESC 0x70000014 387 388 /* ??? */ 389 #define SHT_MIPS_LOCSYM 0x70000015 390 391 /* ??? */ 392 #define SHT_MIPS_AUXSYM 0x70000016 393 394 /* ??? */ 395 #define SHT_MIPS_OPTSYM 0x70000017 396 397 /* ??? */ 398 #define SHT_MIPS_LOCSTR 0x70000018 399 400 /* ??? */ 401 #define SHT_MIPS_LINE 0x70000019 402 403 /* ??? */ 404 #define SHT_MIPS_RFDESC 0x7000001a 405 406 /* Delta C++: symbol table */ 407 #define SHT_MIPS_DELTASYM 0x7000001b 408 409 /* Delta C++: instance table */ 410 #define SHT_MIPS_DELTAINST 0x7000001c 411 412 /* Delta C++: class table */ 413 #define SHT_MIPS_DELTACLASS 0x7000001d 414 415 /* DWARF debugging section. */ 416 #define SHT_MIPS_DWARF 0x7000001e 417 418 /* Delta C++: declarations */ 419 #define SHT_MIPS_DELTADECL 0x7000001f 420 421 /* List of libraries the binary depends on. Includes a time stamp, version 422 number. */ 423 #define SHT_MIPS_SYMBOL_LIB 0x70000020 424 425 /* Events section. */ 426 #define SHT_MIPS_EVENTS 0x70000021 427 428 /* ??? */ 429 #define SHT_MIPS_TRANSLATE 0x70000022 430 431 /* Special pixie sections */ 432 #define SHT_MIPS_PIXIE 0x70000023 433 434 /* Address translation table (for debug info) */ 435 #define SHT_MIPS_XLATE 0x70000024 436 437 /* SGI internal address translation table (for debug info) */ 438 #define SHT_MIPS_XLATE_DEBUG 0x70000025 439 440 /* Intermediate code */ 441 #define SHT_MIPS_WHIRL 0x70000026 442 443 /* C++ exception handling region info */ 444 #define SHT_MIPS_EH_REGION 0x70000027 445 446 /* Obsolete address translation table (for debug info) */ 447 #define SHT_MIPS_XLATE_OLD 0x70000028 448 449 /* Runtime procedure descriptor table exception information (ucode) ??? */ 450 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 451 452 /* ABI related flags section. */ 453 #define SHT_MIPS_ABIFLAGS 0x7000002a 454 455 /* A section of type SHT_MIPS_LIBLIST contains an array of the 456 following structure. The sh_link field is the section index of the 457 string table. The sh_info field is the number of entries in the 458 section. */ 459 typedef struct 460 { 461 /* String table index for name of shared object. */ 462 unsigned long l_name; 463 /* Time stamp. */ 464 unsigned long l_time_stamp; 465 /* Checksum of symbol names and common sizes. */ 466 unsigned long l_checksum; 467 /* String table index for version. */ 468 unsigned long l_version; 469 /* Flags. */ 470 unsigned long l_flags; 471 } Elf32_Lib; 472 473 /* The external version of Elf32_Lib. */ 474 typedef struct 475 { 476 unsigned char l_name[4]; 477 unsigned char l_time_stamp[4]; 478 unsigned char l_checksum[4]; 479 unsigned char l_version[4]; 480 unsigned char l_flags[4]; 481 } Elf32_External_Lib; 482 483 /* The l_flags field of an Elf32_Lib structure may contain the 484 following flags. */ 485 486 /* Require an exact match at runtime. */ 487 #define LL_EXACT_MATCH 0x00000001 488 489 /* Ignore version incompatibilities at runtime. */ 490 #define LL_IGNORE_INT_VER 0x00000002 491 492 /* Require matching minor version number. */ 493 #define LL_REQUIRE_MINOR 0x00000004 494 495 /* ??? */ 496 #define LL_EXPORTS 0x00000008 497 498 /* Delay loading of this library until really needed. */ 499 #define LL_DELAY_LOAD 0x00000010 500 501 /* ??? Delta C++ stuff ??? */ 502 #define LL_DELTA 0x00000020 503 504 505 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 506 .dynsym section. Each element has the following type. */ 507 typedef unsigned long Elf32_Conflict; 508 typedef unsigned char Elf32_External_Conflict[4]; 509 510 typedef unsigned long Elf64_Conflict; 511 typedef unsigned char Elf64_External_Conflict[8]; 512 513 /* A section of type SHT_MIPS_GPTAB contains information about how 514 much GP space would be required for different -G arguments. This 515 information is only used so that the linker can provide informative 516 suggestions as to the best -G value to use. The sh_info field is 517 the index of the section for which this information applies. The 518 contents of the section are an array of the following union. The 519 first element uses the gt_header field. The remaining elements use 520 the gt_entry field. */ 521 typedef union 522 { 523 struct 524 { 525 /* -G value actually used for this object file. */ 526 unsigned long gt_current_g_value; 527 /* Unused. */ 528 unsigned long gt_unused; 529 } gt_header; 530 struct 531 { 532 /* If this -G argument has been used... */ 533 unsigned long gt_g_value; 534 /* ...this many GP section bytes would be required. */ 535 unsigned long gt_bytes; 536 } gt_entry; 537 } Elf32_gptab; 538 539 /* The external version of Elf32_gptab. */ 540 541 typedef union 542 { 543 struct 544 { 545 unsigned char gt_current_g_value[4]; 546 unsigned char gt_unused[4]; 547 } gt_header; 548 struct 549 { 550 unsigned char gt_g_value[4]; 551 unsigned char gt_bytes[4]; 552 } gt_entry; 553 } Elf32_External_gptab; 554 555 /* A section of type SHT_MIPS_REGINFO contains the following 556 structure. */ 557 typedef struct 558 { 559 /* Mask of general purpose registers used. */ 560 unsigned long ri_gprmask; 561 /* Mask of co-processor registers used. */ 562 unsigned long ri_cprmask[4]; 563 /* GP register value for this object file. */ 564 long ri_gp_value; 565 } Elf32_RegInfo; 566 567 /* The external version of the Elf_RegInfo structure. */ 568 typedef struct 569 { 570 unsigned char ri_gprmask[4]; 571 unsigned char ri_cprmask[4][4]; 572 unsigned char ri_gp_value[4]; 573 } Elf32_External_RegInfo; 574 575 /* MIPS ELF .reginfo swapping routines. */ 576 extern void bfd_mips_elf32_swap_reginfo_in 577 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 578 extern void bfd_mips_elf32_swap_reginfo_out 579 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 580 581 /* Processor specific section flags. */ 582 583 /* This section must be in the global data area. */ 584 #define SHF_MIPS_GPREL 0x10000000 585 586 /* This section should be merged. */ 587 #define SHF_MIPS_MERGE 0x20000000 588 589 /* This section contains address data of size implied by section 590 element size. */ 591 #define SHF_MIPS_ADDR 0x40000000 592 593 /* This section contains string data. */ 594 #define SHF_MIPS_STRING 0x80000000 595 596 /* This section may not be stripped. */ 597 #define SHF_MIPS_NOSTRIP 0x08000000 598 599 /* This section is local to threads. */ 600 #define SHF_MIPS_LOCAL 0x04000000 601 602 /* Linker should generate implicit weak names for this section. */ 603 #define SHF_MIPS_NAMES 0x02000000 604 605 /* Section contais text/data which may be replicated in other sections. 606 Linker should retain only one copy. */ 607 #define SHF_MIPS_NODUPES 0x01000000 608 609 /* Processor specific program header types. */ 610 611 /* Register usage information. Identifies one .reginfo section. */ 612 #define PT_MIPS_REGINFO 0x70000000 613 614 /* Runtime procedure table. */ 615 #define PT_MIPS_RTPROC 0x70000001 616 617 /* .MIPS.options section. */ 618 #define PT_MIPS_OPTIONS 0x70000002 619 620 /* Records ABI related flags. */ 621 #define PT_MIPS_ABIFLAGS 0x70000003 622 623 /* Processor specific dynamic array tags. */ 624 625 /* 32 bit version number for runtime linker interface. */ 626 #define DT_MIPS_RLD_VERSION 0x70000001 627 628 /* Time stamp. */ 629 #define DT_MIPS_TIME_STAMP 0x70000002 630 631 /* Checksum of external strings and common sizes. */ 632 #define DT_MIPS_ICHECKSUM 0x70000003 633 634 /* Index of version string in string table. */ 635 #define DT_MIPS_IVERSION 0x70000004 636 637 /* 32 bits of flags. */ 638 #define DT_MIPS_FLAGS 0x70000005 639 640 /* Base address of the segment. */ 641 #define DT_MIPS_BASE_ADDRESS 0x70000006 642 643 /* ??? */ 644 #define DT_MIPS_MSYM 0x70000007 645 646 /* Address of .conflict section. */ 647 #define DT_MIPS_CONFLICT 0x70000008 648 649 /* Address of .liblist section. */ 650 #define DT_MIPS_LIBLIST 0x70000009 651 652 /* Number of local global offset table entries. */ 653 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 654 655 /* Number of entries in the .conflict section. */ 656 #define DT_MIPS_CONFLICTNO 0x7000000b 657 658 /* Number of entries in the .liblist section. */ 659 #define DT_MIPS_LIBLISTNO 0x70000010 660 661 /* Number of entries in the .dynsym section. */ 662 #define DT_MIPS_SYMTABNO 0x70000011 663 664 /* Index of first external dynamic symbol not referenced locally. */ 665 #define DT_MIPS_UNREFEXTNO 0x70000012 666 667 /* Index of first dynamic symbol in global offset table. */ 668 #define DT_MIPS_GOTSYM 0x70000013 669 670 /* Number of page table entries in global offset table. */ 671 #define DT_MIPS_HIPAGENO 0x70000014 672 673 /* Address of run time loader map, used for debugging. */ 674 #define DT_MIPS_RLD_MAP 0x70000016 675 676 /* Delta C++ class definition. */ 677 #define DT_MIPS_DELTA_CLASS 0x70000017 678 679 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 680 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 681 682 /* Delta C++ class instances. */ 683 #define DT_MIPS_DELTA_INSTANCE 0x70000019 684 685 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 686 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 687 688 /* Delta relocations. */ 689 #define DT_MIPS_DELTA_RELOC 0x7000001b 690 691 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 692 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 693 694 /* Delta symbols that Delta relocations refer to. */ 695 #define DT_MIPS_DELTA_SYM 0x7000001d 696 697 /* Number of entries in DT_MIPS_DELTA_SYM. */ 698 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 699 700 /* Delta symbols that hold class declarations. */ 701 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 702 703 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 704 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 705 706 /* Flags indicating information about C++ flavor. */ 707 #define DT_MIPS_CXX_FLAGS 0x70000022 708 709 /* Pixie information (???). */ 710 #define DT_MIPS_PIXIE_INIT 0x70000023 711 712 /* Address of .MIPS.symlib */ 713 #define DT_MIPS_SYMBOL_LIB 0x70000024 714 715 /* The GOT index of the first PTE for a segment */ 716 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 717 718 /* The GOT index of the first PTE for a local symbol */ 719 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 720 721 /* The GOT index of the first PTE for a hidden symbol */ 722 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 723 724 /* The GOT index of the first PTE for a protected symbol */ 725 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 726 727 /* Address of `.MIPS.options'. */ 728 #define DT_MIPS_OPTIONS 0x70000029 729 730 /* Address of `.interface'. */ 731 #define DT_MIPS_INTERFACE 0x7000002a 732 733 /* ??? */ 734 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 735 736 /* Size of the .interface section. */ 737 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 738 739 /* Size of rld_text_resolve function stored in the GOT. */ 740 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 741 742 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 743 #define DT_MIPS_PERF_SUFFIX 0x7000002e 744 745 /* Size of compact relocation section (O32). */ 746 #define DT_MIPS_COMPACT_SIZE 0x7000002f 747 748 /* GP value for auxiliary GOTs. */ 749 #define DT_MIPS_GP_VALUE 0x70000030 750 751 /* Address of auxiliary .dynamic. */ 752 #define DT_MIPS_AUX_DYNAMIC 0x70000031 753 754 /* Address of the base of the PLTGOT. */ 755 #define DT_MIPS_PLTGOT 0x70000032 756 757 /* Points to the base of a writable PLT. */ 758 #define DT_MIPS_RWPLT 0x70000034 759 760 /* Relative offset of run time loader map, used for debugging. */ 761 #define DT_MIPS_RLD_MAP_REL 0x70000035 762 763 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 764 765 /* No flags. */ 766 #define RHF_NONE 0x00000000 767 768 /* Uses shortcut pointers. */ 769 #define RHF_QUICKSTART 0x00000001 770 771 /* Hash size is not a power of two. */ 772 #define RHF_NOTPOT 0x00000002 773 774 /* Ignore LD_LIBRARY_PATH. */ 775 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 776 777 /* DSO address may not be relocated. */ 778 #define RHF_NO_MOVE 0x00000008 779 780 /* SGI specific features. */ 781 #define RHF_SGI_ONLY 0x00000010 782 783 /* Guarantee that .init will finish executing before any non-init 784 code in DSO is called. */ 785 #define RHF_GUARANTEE_INIT 0x00000020 786 787 /* Contains Delta C++ code. */ 788 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 789 790 /* Guarantee that .init will start executing before any non-init 791 code in DSO is called. */ 792 #define RHF_GUARANTEE_START_INIT 0x00000080 793 794 /* Generated by pixie. */ 795 #define RHF_PIXIE 0x00000100 796 797 /* Delay-load DSO by default. */ 798 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 799 800 /* Object may be requickstarted */ 801 #define RHF_REQUICKSTART 0x00000400 802 803 /* Object has been requickstarted */ 804 #define RHF_REQUICKSTARTED 0x00000800 805 806 /* Generated by cord. */ 807 #define RHF_CORD 0x00001000 808 809 /* Object contains no unresolved undef symbols. */ 810 #define RHF_NO_UNRES_UNDEF 0x00002000 811 812 /* Symbol table is in a safe order. */ 813 #define RHF_RLD_ORDER_SAFE 0x00004000 814 815 /* Special values for the st_other field in the symbol table. These 816 are used in an Irix 5 dynamic symbol table. */ 817 818 #define STO_DEFAULT STV_DEFAULT 819 #define STO_INTERNAL STV_INTERNAL 820 #define STO_HIDDEN STV_HIDDEN 821 #define STO_PROTECTED STV_PROTECTED 822 823 /* Two topmost bits denote the MIPS ISA for .text symbols: 824 + 00 -- standard MIPS code, 825 + 10 -- microMIPS code, 826 + 11 -- MIPS16 code; requires the following two bits to be set too. 827 Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC. See below 828 for details. */ 829 #define STO_MIPS_ISA (3 << 6) 830 831 /* The mask spanning the rest of MIPS psABI flags. At most one is expected 832 to be set except for STO_MIPS16. */ 833 #define STO_MIPS_FLAGS (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1))) 834 835 /* The MIPS psABI was updated in 2008 with support for PLTs and copy 836 relocs. There are therefore two types of nonzero SHN_UNDEF functions: 837 PLT entries and traditional MIPS lazy binding stubs. We mark the former 838 with STO_MIPS_PLT to distinguish them from the latter. */ 839 #define STO_MIPS_PLT 0x8 840 #define ELF_ST_IS_MIPS_PLT(other) \ 841 ((ELF_ST_IS_MIPS16 (other) \ 842 ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS)) \ 843 : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT) 844 #define ELF_ST_SET_MIPS_PLT(other) \ 845 ((ELF_ST_IS_MIPS16 (other) \ 846 ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS)) \ 847 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT) 848 849 /* This value is used to mark PIC functions in an object that mixes 850 PIC and non-PIC. Note that this bit overlaps with STO_MIPS16, 851 although MIPS16 symbols are never considered to be MIPS_PIC. */ 852 #define STO_MIPS_PIC 0x20 853 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC) 854 #define ELF_ST_SET_MIPS_PIC(other) \ 855 ((ELF_ST_IS_MIPS16 (other) \ 856 ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS)) \ 857 : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC) 858 859 /* This value is used for a mips16 .text symbol. */ 860 #define STO_MIPS16 0xf0 861 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16) 862 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16) 863 864 /* This value is used for a microMIPS .text symbol. To distinguish from 865 STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS. The 866 mask is STO_MIPS_ISA. */ 867 #define STO_MICROMIPS (2 << 6) 868 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS) 869 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS) 870 871 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) 872 has been indicated for a .text symbol. */ 873 #define ELF_ST_IS_COMPRESSED(other) \ 874 (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other)) 875 876 /* This bit is used on Irix to indicate a symbol whose definition 877 is optional - if, at final link time, it cannot be found, no 878 error message should be produced. */ 879 #define STO_OPTIONAL (1 << 2) 880 /* A macro to examine the STO_OPTIONAL bit. */ 881 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 882 883 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 884 relocation entry specifies up to three actual relocations, all at 885 the same address. The first relocation which required a symbol 886 uses the symbol in the r_sym field. The second relocation which 887 requires a symbol uses the symbol in the r_ssym field. If all 888 three relocations require a symbol, the third one uses a zero 889 value. */ 890 891 /* An entry in a 64 bit SHT_REL section. */ 892 893 typedef struct 894 { 895 /* Address of relocation. */ 896 unsigned char r_offset[8]; 897 /* Symbol index. */ 898 unsigned char r_sym[4]; 899 /* Special symbol. */ 900 unsigned char r_ssym[1]; 901 /* Third relocation. */ 902 unsigned char r_type3[1]; 903 /* Second relocation. */ 904 unsigned char r_type2[1]; 905 /* First relocation. */ 906 unsigned char r_type[1]; 907 } Elf64_Mips_External_Rel; 908 909 typedef struct 910 { 911 /* Address of relocation. */ 912 bfd_vma r_offset; 913 /* Symbol index. */ 914 unsigned long r_sym; 915 /* Special symbol. */ 916 unsigned char r_ssym; 917 /* Third relocation. */ 918 unsigned char r_type3; 919 /* Second relocation. */ 920 unsigned char r_type2; 921 /* First relocation. */ 922 unsigned char r_type; 923 } Elf64_Mips_Internal_Rel; 924 925 /* An entry in a 64 bit SHT_RELA section. */ 926 927 typedef struct 928 { 929 /* Address of relocation. */ 930 unsigned char r_offset[8]; 931 /* Symbol index. */ 932 unsigned char r_sym[4]; 933 /* Special symbol. */ 934 unsigned char r_ssym[1]; 935 /* Third relocation. */ 936 unsigned char r_type3[1]; 937 /* Second relocation. */ 938 unsigned char r_type2[1]; 939 /* First relocation. */ 940 unsigned char r_type[1]; 941 /* Addend. */ 942 unsigned char r_addend[8]; 943 } Elf64_Mips_External_Rela; 944 945 typedef struct 946 { 947 /* Address of relocation. */ 948 bfd_vma r_offset; 949 /* Symbol index. */ 950 unsigned long r_sym; 951 /* Special symbol. */ 952 unsigned char r_ssym; 953 /* Third relocation. */ 954 unsigned char r_type3; 955 /* Second relocation. */ 956 unsigned char r_type2; 957 /* First relocation. */ 958 unsigned char r_type; 959 /* Addend. */ 960 bfd_signed_vma r_addend; 961 } Elf64_Mips_Internal_Rela; 962 963 /* MIPS ELF 64 relocation info access macros. */ 964 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 965 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 966 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 967 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 968 969 /* Values found in the r_ssym field of a relocation entry. */ 970 971 /* No relocation. */ 972 #define RSS_UNDEF 0 973 974 /* Value of GP. */ 975 #define RSS_GP 1 976 977 /* Value of GP in object being relocated. */ 978 #define RSS_GP0 2 979 980 /* Address of location being relocated. */ 981 #define RSS_LOC 3 982 983 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 984 which starts with this header. */ 985 986 typedef struct 987 { 988 /* Type of option. */ 989 unsigned char kind[1]; 990 /* Size of option descriptor, including header. */ 991 unsigned char size[1]; 992 /* Section index of affected section, or 0 for global option. */ 993 unsigned char section[2]; 994 /* Information specific to this kind of option. */ 995 unsigned char info[4]; 996 } Elf_External_Options; 997 998 typedef struct 999 { 1000 /* Type of option. */ 1001 unsigned char kind; 1002 /* Size of option descriptor, including header. */ 1003 unsigned char size; 1004 /* Section index of affected section, or 0 for global option. */ 1005 unsigned short section; 1006 /* Information specific to this kind of option. */ 1007 unsigned long info; 1008 } Elf_Internal_Options; 1009 1010 /* MIPS ELF option header swapping routines. */ 1011 extern void bfd_mips_elf_swap_options_in 1012 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 1013 extern void bfd_mips_elf_swap_options_out 1014 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 1015 1016 /* Values which may appear in the kind field of an Elf_Options 1017 structure. */ 1018 1019 /* Undefined. */ 1020 #define ODK_NULL 0 1021 1022 /* Register usage and GP value. */ 1023 #define ODK_REGINFO 1 1024 1025 /* Exception processing information. */ 1026 #define ODK_EXCEPTIONS 2 1027 1028 /* Section padding information. */ 1029 #define ODK_PAD 3 1030 1031 /* Hardware workarounds performed. */ 1032 #define ODK_HWPATCH 4 1033 1034 /* Fill value used by the linker. */ 1035 #define ODK_FILL 5 1036 1037 /* Reserved space for desktop tools. */ 1038 #define ODK_TAGS 6 1039 1040 /* Hardware workarounds, AND bits when merging. */ 1041 #define ODK_HWAND 7 1042 1043 /* Hardware workarounds, OR bits when merging. */ 1044 #define ODK_HWOR 8 1045 1046 /* GP group to use for text/data sections. */ 1047 #define ODK_GP_GROUP 9 1048 1049 /* ID information. */ 1050 #define ODK_IDENT 10 1051 1052 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 1053 structure. In the 64 bit ABI, it is the following structure. The 1054 info field of the options header is not used. */ 1055 1056 typedef struct 1057 { 1058 /* Mask of general purpose registers used. */ 1059 unsigned char ri_gprmask[4]; 1060 /* Padding. */ 1061 unsigned char ri_pad[4]; 1062 /* Mask of co-processor registers used. */ 1063 unsigned char ri_cprmask[4][4]; 1064 /* GP register value for this object file. */ 1065 unsigned char ri_gp_value[8]; 1066 } Elf64_External_RegInfo; 1067 1068 typedef struct 1069 { 1070 /* Mask of general purpose registers used. */ 1071 unsigned long ri_gprmask; 1072 /* Padding. */ 1073 unsigned long ri_pad; 1074 /* Mask of co-processor registers used. */ 1075 unsigned long ri_cprmask[4]; 1076 /* GP register value for this object file. */ 1077 bfd_vma ri_gp_value; 1078 } Elf64_Internal_RegInfo; 1079 1080 /* ABI Flags structure version 0. */ 1081 1082 typedef struct 1083 { 1084 /* Version of flags structure. */ 1085 unsigned char version[2]; 1086 /* The level of the ISA: 1-5, 32, 64. */ 1087 unsigned char isa_level[1]; 1088 /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise. */ 1089 unsigned char isa_rev[1]; 1090 /* The size of general purpose registers. */ 1091 unsigned char gpr_size[1]; 1092 /* The size of co-processor 1 registers. */ 1093 unsigned char cpr1_size[1]; 1094 /* The size of co-processor 2 registers. */ 1095 unsigned char cpr2_size[1]; 1096 /* The floating-point ABI. */ 1097 unsigned char fp_abi[1]; 1098 /* Processor-specific extension. */ 1099 unsigned char isa_ext[4]; 1100 /* Mask of ASEs used. */ 1101 unsigned char ases[4]; 1102 /* Mask of general flags. */ 1103 unsigned char flags1[4]; 1104 unsigned char flags2[4]; 1105 } Elf_External_ABIFlags_v0; 1106 1107 typedef struct elf_internal_abiflags_v0 1108 { 1109 /* Version of flags structure. */ 1110 unsigned short version; 1111 /* The level of the ISA: 1-5, 32, 64. */ 1112 unsigned char isa_level; 1113 /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise. */ 1114 unsigned char isa_rev; 1115 /* The size of general purpose registers. */ 1116 unsigned char gpr_size; 1117 /* The size of co-processor 1 registers. */ 1118 unsigned char cpr1_size; 1119 /* The size of co-processor 2 registers. */ 1120 unsigned char cpr2_size; 1121 /* The floating-point ABI. */ 1122 unsigned char fp_abi; 1123 /* Processor-specific extension. */ 1124 unsigned long isa_ext; 1125 /* Mask of ASEs used. */ 1126 unsigned long ases; 1127 /* Mask of general flags. */ 1128 unsigned long flags1; 1129 unsigned long flags2; 1130 } Elf_Internal_ABIFlags_v0; 1131 1132 typedef struct 1133 { 1134 /* The hash value computed from the name of the corresponding 1135 dynamic symbol. */ 1136 unsigned char ms_hash_value[4]; 1137 /* Contains both the dynamic relocation index and the symbol flags 1138 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 1139 to access the individual values. The dynamic relocation index 1140 identifies the first entry in the .rel.dyn section that 1141 references the dynamic symbol corresponding to this msym entry. 1142 If the index is 0, no dynamic relocations are associated with the 1143 symbol. The symbol flags field is reserved for future use. */ 1144 unsigned char ms_info[4]; 1145 } Elf32_External_Msym; 1146 1147 typedef struct 1148 { 1149 /* The hash value computed from the name of the corresponding 1150 dynamic symbol. */ 1151 unsigned long ms_hash_value; 1152 /* Contains both the dynamic relocation index and the symbol flags 1153 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 1154 to access the individual values. The dynamic relocation index 1155 identifies the first entry in the .rel.dyn section that 1156 references the dynamic symbol corresponding to this msym entry. 1157 If the index is 0, no dynamic relocations are associated with the 1158 symbol. The symbol flags field is reserved for future use. */ 1159 unsigned long ms_info; 1160 } Elf32_Internal_Msym; 1161 1162 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 1163 #define ELF32_MS_FLAGS(i) (i) & 0xff) 1164 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 1165 1166 /* MIPS ELF reginfo swapping routines. */ 1167 extern void bfd_mips_elf64_swap_reginfo_in 1168 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 1169 extern void bfd_mips_elf64_swap_reginfo_out 1170 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 1171 1172 /* MIPS ELF flags swapping routines. */ 1173 extern void bfd_mips_elf_swap_abiflags_v0_in 1174 (bfd *, const Elf_External_ABIFlags_v0 *, Elf_Internal_ABIFlags_v0 *); 1175 extern void bfd_mips_elf_swap_abiflags_v0_out 1176 (bfd *, const Elf_Internal_ABIFlags_v0 *, Elf_External_ABIFlags_v0 *); 1177 1178 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 1179 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 1180 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 1181 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 1182 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 1183 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 1184 exceptions (debug mode). */ 1185 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 1186 1187 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 1188 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 1189 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 1190 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 1191 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 1192 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 1193 1194 /* Masks for the info word of an ODK_PAD descriptor. */ 1195 #define OPAD_PREFIX 0x01 1196 #define OPAD_POSTFIX 0x02 1197 #define OPAD_SYMBOL 0x04 1198 1199 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 1200 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 1201 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 1202 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 1203 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 1204 (clean == 1). */ 1205 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 1206 load patch. */ 1207 1208 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1209 #define OGP_GROUP 0x0000ffff /* GP group number. */ 1210 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1211 1212 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1213 #define OHWA0_R4KEOP_CHECKED 0x00000001 1214 #define OHWA0_R4KEOP_CLEAN 0x00000002 1215 1216 /* Values for the xxx_size bytes of an ABI flags structure. */ 1217 1218 #define AFL_REG_NONE 0x00 /* No registers. */ 1219 #define AFL_REG_32 0x01 /* 32-bit registers. */ 1220 #define AFL_REG_64 0x02 /* 64-bit registers. */ 1221 #define AFL_REG_128 0x03 /* 128-bit registers. */ 1222 1223 /* Masks for the ases word of an ABI flags structure. */ 1224 1225 #define AFL_ASE_DSP 0x00000001 /* DSP ASE. */ 1226 #define AFL_ASE_DSPR2 0x00000002 /* DSP R2 ASE. */ 1227 #define AFL_ASE_EVA 0x00000004 /* Enhanced VA Scheme. */ 1228 #define AFL_ASE_MCU 0x00000008 /* MCU (MicroController) ASE. */ 1229 #define AFL_ASE_MDMX 0x00000010 /* MDMX ASE. */ 1230 #define AFL_ASE_MIPS3D 0x00000020 /* MIPS-3D ASE. */ 1231 #define AFL_ASE_MT 0x00000040 /* MT ASE. */ 1232 #define AFL_ASE_SMARTMIPS 0x00000080 /* SmartMIPS ASE. */ 1233 #define AFL_ASE_VIRT 0x00000100 /* VZ ASE. */ 1234 #define AFL_ASE_MSA 0x00000200 /* MSA ASE. */ 1235 #define AFL_ASE_MIPS16 0x00000400 /* MIPS16 ASE. */ 1236 #define AFL_ASE_MICROMIPS 0x00000800 /* MICROMIPS ASE. */ 1237 #define AFL_ASE_XPA 0x00001000 /* XPA ASE. */ 1238 #define AFL_ASE_DSPR3 0x00002000 /* DSP R3 ASE. */ 1239 #define AFL_ASE_MIPS16E2 0x00004000 /* MIPS16e2 ASE. */ 1240 #define AFL_ASE_CRC 0x00008000 /* CRC ASE. */ 1241 #define AFL_ASE_RESERVED1 0x00010000 /* Reserved by MIPS Tech for WIP. */ 1242 #define AFL_ASE_GINV 0x00020000 /* GINV ASE. */ 1243 #define AFL_ASE_LOONGSON_MMI 0x00040000 /* Loongson MMI ASE. */ 1244 #define AFL_ASE_LOONGSON_CAM 0x00080000 /* Loongson CAM ASE. */ 1245 #define AFL_ASE_LOONGSON_EXT 0x00100000 /* Loongson EXT instructions. */ 1246 #define AFL_ASE_LOONGSON_EXT2 0x00200000 /* Loongson EXT2 instructions. */ 1247 #define AFL_ASE_MASK 0x003effff /* All ASEs. */ 1248 1249 /* Values for the isa_ext word of an ABI flags structure. */ 1250 1251 #define AFL_EXT_XLR 1 /* RMI Xlr instruction. */ 1252 #define AFL_EXT_OCTEON2 2 /* Cavium Networks Octeon2. */ 1253 #define AFL_EXT_OCTEONP 3 /* Cavium Networks OcteonP. */ 1254 #define AFL_EXT_OCTEON 5 /* Cavium Networks Octeon. */ 1255 #define AFL_EXT_5900 6 /* MIPS R5900 instruction. */ 1256 #define AFL_EXT_4650 7 /* MIPS R4650 instruction. */ 1257 #define AFL_EXT_4010 8 /* LSI R4010 instruction. */ 1258 #define AFL_EXT_4100 9 /* NEC VR4100 instruction. */ 1259 #define AFL_EXT_3900 10 /* Toshiba R3900 instruction. */ 1260 #define AFL_EXT_10000 11 /* MIPS R10000 instruction. */ 1261 #define AFL_EXT_SB1 12 /* Broadcom SB-1 instruction. */ 1262 #define AFL_EXT_4111 13 /* NEC VR4111/VR4181 instruction. */ 1263 #define AFL_EXT_4120 14 /* NEC VR4120 instruction. */ 1264 #define AFL_EXT_5400 15 /* NEC VR5400 instruction. */ 1265 #define AFL_EXT_5500 16 /* NEC VR5500 instruction. */ 1266 #define AFL_EXT_LOONGSON_2E 17 /* ST Microelectronics Loongson 2E. */ 1267 #define AFL_EXT_LOONGSON_2F 18 /* ST Microelectronics Loongson 2F. */ 1268 #define AFL_EXT_OCTEON3 19 /* Cavium Networks Octeon3. */ 1269 #define AFL_EXT_INTERAPTIV_MR2 20 /* Imagination interAptiv MR2. */ 1270 1271 /* Masks for the flags1 word of an ABI flags structure. */ 1272 #define AFL_FLAGS1_ODDSPREG 1 /* Uses odd single-precision registers. */ 1273 1274 extern unsigned int bfd_mips_isa_ext (bfd *); 1275 1276 1277 /* Object attribute tags. */ 1278 enum 1279 { 1280 /* 0-3 are generic. */ 1281 1282 /* Floating-point ABI used by this object file. */ 1283 Tag_GNU_MIPS_ABI_FP = 4, 1284 1285 /* MSA ABI used by this object file. */ 1286 Tag_GNU_MIPS_ABI_MSA = 8, 1287 }; 1288 1289 /* Object attribute values. */ 1290 enum 1291 { 1292 /* Values defined for Tag_GNU_MIPS_ABI_FP. */ 1293 1294 /* Not tagged or not using any ABIs affected by the differences. */ 1295 Val_GNU_MIPS_ABI_FP_ANY = 0, 1296 1297 /* Using hard-float -mdouble-float. */ 1298 Val_GNU_MIPS_ABI_FP_DOUBLE = 1, 1299 1300 /* Using hard-float -msingle-float. */ 1301 Val_GNU_MIPS_ABI_FP_SINGLE = 2, 1302 1303 /* Using soft-float. */ 1304 Val_GNU_MIPS_ABI_FP_SOFT = 3, 1305 1306 /* Using -mips32r2 -mfp64. */ 1307 Val_GNU_MIPS_ABI_FP_OLD_64 = 4, 1308 1309 /* Using -mfpxx */ 1310 Val_GNU_MIPS_ABI_FP_XX = 5, 1311 1312 /* Using -mips32r2 -mfp64. */ 1313 Val_GNU_MIPS_ABI_FP_64 = 6, 1314 1315 /* Using -mips32r2 -mfp64 -mno-odd-spreg. */ 1316 Val_GNU_MIPS_ABI_FP_64A = 7, 1317 1318 /* This is reserved for backward-compatibility with an earlier 1319 implementation of the MIPS NaN2008 functionality. */ 1320 Val_GNU_MIPS_ABI_FP_NAN2008 = 8, 1321 1322 /* Values defined for Tag_GNU_MIPS_ABI_MSA. */ 1323 1324 /* Not tagged or not using any ABIs affected by the differences. */ 1325 Val_GNU_MIPS_ABI_MSA_ANY = 0, 1326 1327 /* Using 128-bit MSA. */ 1328 Val_GNU_MIPS_ABI_MSA_128 = 1, 1329 }; 1330 1331 #ifdef __cplusplus 1332 } 1333 #endif 1334 1335 #endif /* _ELF_MIPS_H */ 1336