1 /* MIPS ELF support for BFD. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005, 2008, 2009 4 Free Software Foundation, Inc. 5 6 By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from 7 information in the System V Application Binary Interface, MIPS 8 Processor Supplement. 9 10 This file is part of BFD, the Binary File Descriptor library. 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 25 26 /* This file holds definitions specific to the MIPS ELF ABI. Note 27 that most of this is not actually implemented by BFD. */ 28 29 #ifndef _ELF_MIPS_H 30 #define _ELF_MIPS_H 31 32 #include "elf/reloc-macros.h" 33 34 /* Relocation types. */ 35 START_RELOC_NUMBERS (elf_mips_reloc_type) 36 RELOC_NUMBER (R_MIPS_NONE, 0) 37 RELOC_NUMBER (R_MIPS_16, 1) 38 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */ 39 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */ 40 RELOC_NUMBER (R_MIPS_26, 4) 41 RELOC_NUMBER (R_MIPS_HI16, 5) 42 RELOC_NUMBER (R_MIPS_LO16, 6) 43 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */ 44 RELOC_NUMBER (R_MIPS_LITERAL, 8) 45 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */ 46 RELOC_NUMBER (R_MIPS_PC16, 10) 47 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */ 48 RELOC_NUMBER (R_MIPS_GPREL32, 12) 49 /* The remaining relocs are defined on Irix, although they are not 50 in the MIPS ELF ABI. */ 51 RELOC_NUMBER (R_MIPS_UNUSED1, 13) 52 RELOC_NUMBER (R_MIPS_UNUSED2, 14) 53 RELOC_NUMBER (R_MIPS_UNUSED3, 15) 54 RELOC_NUMBER (R_MIPS_SHIFT5, 16) 55 RELOC_NUMBER (R_MIPS_SHIFT6, 17) 56 RELOC_NUMBER (R_MIPS_64, 18) 57 RELOC_NUMBER (R_MIPS_GOT_DISP, 19) 58 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) 59 RELOC_NUMBER (R_MIPS_GOT_OFST, 21) 60 RELOC_NUMBER (R_MIPS_GOT_HI16, 22) 61 RELOC_NUMBER (R_MIPS_GOT_LO16, 23) 62 RELOC_NUMBER (R_MIPS_SUB, 24) 63 RELOC_NUMBER (R_MIPS_INSERT_A, 25) 64 RELOC_NUMBER (R_MIPS_INSERT_B, 26) 65 RELOC_NUMBER (R_MIPS_DELETE, 27) 66 RELOC_NUMBER (R_MIPS_HIGHER, 28) 67 RELOC_NUMBER (R_MIPS_HIGHEST, 29) 68 RELOC_NUMBER (R_MIPS_CALL_HI16, 30) 69 RELOC_NUMBER (R_MIPS_CALL_LO16, 31) 70 RELOC_NUMBER (R_MIPS_SCN_DISP, 32) 71 RELOC_NUMBER (R_MIPS_REL16, 33) 72 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) 73 RELOC_NUMBER (R_MIPS_PJUMP, 35) 74 RELOC_NUMBER (R_MIPS_RELGOT, 36) 75 RELOC_NUMBER (R_MIPS_JALR, 37) 76 /* TLS relocations. */ 77 RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38) 78 RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39) 79 RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40) 80 RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41) 81 RELOC_NUMBER (R_MIPS_TLS_GD, 42) 82 RELOC_NUMBER (R_MIPS_TLS_LDM, 43) 83 RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44) 84 RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45) 85 RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46) 86 RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47) 87 RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48) 88 RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49) 89 RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50) 90 RELOC_NUMBER (R_MIPS_GLOB_DAT, 51) 91 FAKE_RELOC (R_MIPS_max, 52) 92 /* These relocs are used for the mips16. */ 93 FAKE_RELOC (R_MIPS16_min, 100) 94 RELOC_NUMBER (R_MIPS16_26, 100) 95 RELOC_NUMBER (R_MIPS16_GPREL, 101) 96 RELOC_NUMBER (R_MIPS16_GOT16, 102) 97 RELOC_NUMBER (R_MIPS16_CALL16, 103) 98 RELOC_NUMBER (R_MIPS16_HI16, 104) 99 RELOC_NUMBER (R_MIPS16_LO16, 105) 100 FAKE_RELOC (R_MIPS16_max, 106) 101 /* These relocations are specific to VxWorks. */ 102 RELOC_NUMBER (R_MIPS_COPY, 126) 103 RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127) 104 /* This was a GNU extension used by embedded-PIC. It was co-opted by 105 mips-linux for exception-handling data. It is no longer used, but 106 should continue to be supported by the linker for backward 107 compatibility. (GCC stopped using it in May, 2004.) */ 108 RELOC_NUMBER (R_MIPS_PC32, 248) 109 /* FIXME: this relocation is used internally by gas. */ 110 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 111 /* These are GNU extensions to enable C++ vtable garbage collection. */ 112 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 113 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 114 END_RELOC_NUMBERS (R_MIPS_maxext) 115 116 /* Processor specific flags for the ELF header e_flags field. */ 117 118 /* At least one .noreorder directive appears in the source. */ 119 #define EF_MIPS_NOREORDER 0x00000001 120 121 /* File contains position independent code. */ 122 #define EF_MIPS_PIC 0x00000002 123 124 /* Code in file uses the standard calling sequence for calling 125 position independent code. */ 126 #define EF_MIPS_CPIC 0x00000004 127 128 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */ 129 #define EF_MIPS_XGOT 0x00000008 130 131 /* Code in file uses UCODE (obsolete) */ 132 #define EF_MIPS_UCODE 0x00000010 133 134 /* Code in file uses new ABI (-n32 on Irix 6). */ 135 #define EF_MIPS_ABI2 0x00000020 136 137 /* Process the .MIPS.options section first by ld */ 138 #define EF_MIPS_OPTIONS_FIRST 0x00000080 139 140 /* Architectural Extensions used by this file */ 141 #define EF_MIPS_ARCH_ASE 0x0f000000 142 143 /* Use MDMX multimedia extensions */ 144 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000 145 146 /* Use MIPS-16 ISA extensions */ 147 #define EF_MIPS_ARCH_ASE_M16 0x04000000 148 149 /* Indicates code compiled for a 64-bit machine in 32-bit mode. 150 (regs are 32-bits wide.) */ 151 #define EF_MIPS_32BITMODE 0x00000100 152 153 /* Four bit MIPS architecture field. */ 154 #define EF_MIPS_ARCH 0xf0000000 155 156 /* -mips1 code. */ 157 #define E_MIPS_ARCH_1 0x00000000 158 159 /* -mips2 code. */ 160 #define E_MIPS_ARCH_2 0x10000000 161 162 /* -mips3 code. */ 163 #define E_MIPS_ARCH_3 0x20000000 164 165 /* -mips4 code. */ 166 #define E_MIPS_ARCH_4 0x30000000 167 168 /* -mips5 code. */ 169 #define E_MIPS_ARCH_5 0x40000000 170 171 /* -mips32 code. */ 172 #define E_MIPS_ARCH_32 0x50000000 173 174 /* -mips64 code. */ 175 #define E_MIPS_ARCH_64 0x60000000 176 177 /* -mips32r2 code. */ 178 #define E_MIPS_ARCH_32R2 0x70000000 179 180 /* -mips64r2 code. */ 181 #define E_MIPS_ARCH_64R2 0x80000000 182 183 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 184 #define EF_MIPS_ABI 0x0000F000 185 186 /* The original o32 abi. */ 187 #define E_MIPS_ABI_O32 0x00001000 188 189 /* O32 extended to work on 64 bit architectures */ 190 #define E_MIPS_ABI_O64 0x00002000 191 192 /* EABI in 32 bit mode */ 193 #define E_MIPS_ABI_EABI32 0x00003000 194 195 /* EABI in 64 bit mode */ 196 #define E_MIPS_ABI_EABI64 0x00004000 197 198 199 /* Machine variant if we know it. This field was invented at Cygnus, 200 but it is hoped that other vendors will adopt it. If some standard 201 is developed, this code should be changed to follow it. */ 202 203 #define EF_MIPS_MACH 0x00FF0000 204 205 /* Cygnus is choosing values between 80 and 9F; 206 00 - 7F should be left for a future standard; 207 the rest are open. */ 208 209 #define E_MIPS_MACH_3900 0x00810000 210 #define E_MIPS_MACH_4010 0x00820000 211 #define E_MIPS_MACH_4100 0x00830000 212 #define E_MIPS_MACH_4650 0x00850000 213 #define E_MIPS_MACH_4120 0x00870000 214 #define E_MIPS_MACH_4111 0x00880000 215 #define E_MIPS_MACH_SB1 0x008a0000 216 #define E_MIPS_MACH_OCTEON 0x008b0000 217 #define E_MIPS_MACH_XLR 0x008c0000 218 #define E_MIPS_MACH_5400 0x00910000 219 #define E_MIPS_MACH_5500 0x00980000 220 #define E_MIPS_MACH_9000 0x00990000 221 #define E_MIPS_MACH_LS2E 0x00A00000 222 #define E_MIPS_MACH_LS2F 0x00A10000 223 224 /* Processor specific section indices. These sections do not actually 225 exist. Symbols with a st_shndx field corresponding to one of these 226 values have a special meaning. */ 227 228 /* Defined and allocated common symbol. Value is virtual address. If 229 relocated, alignment must be preserved. */ 230 #define SHN_MIPS_ACOMMON SHN_LORESERVE 231 232 /* Defined and allocated text symbol. Value is virtual address. 233 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 234 #define SHN_MIPS_TEXT (SHN_LORESERVE + 1) 235 236 /* Defined and allocated data symbol. Value is virtual address. 237 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 238 #define SHN_MIPS_DATA (SHN_LORESERVE + 2) 239 240 /* Small common symbol. */ 241 #define SHN_MIPS_SCOMMON (SHN_LORESERVE + 3) 242 243 /* Small undefined symbol. */ 244 #define SHN_MIPS_SUNDEFINED (SHN_LORESERVE + 4) 245 246 /* Processor specific section types. */ 247 248 /* Section contains the set of dynamic shared objects used when 249 statically linking. */ 250 #define SHT_MIPS_LIBLIST 0x70000000 251 252 /* I'm not sure what this is, but it's used on Irix 5. */ 253 #define SHT_MIPS_MSYM 0x70000001 254 255 /* Section contains list of symbols whose definitions conflict with 256 symbols defined in shared objects. */ 257 #define SHT_MIPS_CONFLICT 0x70000002 258 259 /* Section contains the global pointer table. */ 260 #define SHT_MIPS_GPTAB 0x70000003 261 262 /* Section contains microcode information. The exact format is 263 unspecified. */ 264 #define SHT_MIPS_UCODE 0x70000004 265 266 /* Section contains some sort of debugging information. The exact 267 format is unspecified. It's probably ECOFF symbols. */ 268 #define SHT_MIPS_DEBUG 0x70000005 269 270 /* Section contains register usage information. */ 271 #define SHT_MIPS_REGINFO 0x70000006 272 273 /* ??? */ 274 #define SHT_MIPS_PACKAGE 0x70000007 275 276 /* ??? */ 277 #define SHT_MIPS_PACKSYM 0x70000008 278 279 /* ??? */ 280 #define SHT_MIPS_RELD 0x70000009 281 282 /* Section contains interface information. */ 283 #define SHT_MIPS_IFACE 0x7000000b 284 285 /* Section contains description of contents of another section. */ 286 #define SHT_MIPS_CONTENT 0x7000000c 287 288 /* Section contains miscellaneous options. */ 289 #define SHT_MIPS_OPTIONS 0x7000000d 290 291 /* ??? */ 292 #define SHT_MIPS_SHDR 0x70000010 293 294 /* ??? */ 295 #define SHT_MIPS_FDESC 0x70000011 296 297 /* ??? */ 298 #define SHT_MIPS_EXTSYM 0x70000012 299 300 /* ??? */ 301 #define SHT_MIPS_DENSE 0x70000013 302 303 /* ??? */ 304 #define SHT_MIPS_PDESC 0x70000014 305 306 /* ??? */ 307 #define SHT_MIPS_LOCSYM 0x70000015 308 309 /* ??? */ 310 #define SHT_MIPS_AUXSYM 0x70000016 311 312 /* ??? */ 313 #define SHT_MIPS_OPTSYM 0x70000017 314 315 /* ??? */ 316 #define SHT_MIPS_LOCSTR 0x70000018 317 318 /* ??? */ 319 #define SHT_MIPS_LINE 0x70000019 320 321 /* ??? */ 322 #define SHT_MIPS_RFDESC 0x7000001a 323 324 /* Delta C++: symbol table */ 325 #define SHT_MIPS_DELTASYM 0x7000001b 326 327 /* Delta C++: instance table */ 328 #define SHT_MIPS_DELTAINST 0x7000001c 329 330 /* Delta C++: class table */ 331 #define SHT_MIPS_DELTACLASS 0x7000001d 332 333 /* DWARF debugging section. */ 334 #define SHT_MIPS_DWARF 0x7000001e 335 336 /* Delta C++: declarations */ 337 #define SHT_MIPS_DELTADECL 0x7000001f 338 339 /* List of libraries the binary depends on. Includes a time stamp, version 340 number. */ 341 #define SHT_MIPS_SYMBOL_LIB 0x70000020 342 343 /* Events section. */ 344 #define SHT_MIPS_EVENTS 0x70000021 345 346 /* ??? */ 347 #define SHT_MIPS_TRANSLATE 0x70000022 348 349 /* Special pixie sections */ 350 #define SHT_MIPS_PIXIE 0x70000023 351 352 /* Address translation table (for debug info) */ 353 #define SHT_MIPS_XLATE 0x70000024 354 355 /* SGI internal address translation table (for debug info) */ 356 #define SHT_MIPS_XLATE_DEBUG 0x70000025 357 358 /* Intermediate code */ 359 #define SHT_MIPS_WHIRL 0x70000026 360 361 /* C++ exception handling region info */ 362 #define SHT_MIPS_EH_REGION 0x70000027 363 364 /* Obsolete address translation table (for debug info) */ 365 #define SHT_MIPS_XLATE_OLD 0x70000028 366 367 /* Runtime procedure descriptor table exception information (ucode) ??? */ 368 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 369 370 371 /* A section of type SHT_MIPS_LIBLIST contains an array of the 372 following structure. The sh_link field is the section index of the 373 string table. The sh_info field is the number of entries in the 374 section. */ 375 typedef struct 376 { 377 /* String table index for name of shared object. */ 378 unsigned long l_name; 379 /* Time stamp. */ 380 unsigned long l_time_stamp; 381 /* Checksum of symbol names and common sizes. */ 382 unsigned long l_checksum; 383 /* String table index for version. */ 384 unsigned long l_version; 385 /* Flags. */ 386 unsigned long l_flags; 387 } Elf32_Lib; 388 389 /* The external version of Elf32_Lib. */ 390 typedef struct 391 { 392 unsigned char l_name[4]; 393 unsigned char l_time_stamp[4]; 394 unsigned char l_checksum[4]; 395 unsigned char l_version[4]; 396 unsigned char l_flags[4]; 397 } Elf32_External_Lib; 398 399 /* The l_flags field of an Elf32_Lib structure may contain the 400 following flags. */ 401 402 /* Require an exact match at runtime. */ 403 #define LL_EXACT_MATCH 0x00000001 404 405 /* Ignore version incompatibilities at runtime. */ 406 #define LL_IGNORE_INT_VER 0x00000002 407 408 /* Require matching minor version number. */ 409 #define LL_REQUIRE_MINOR 0x00000004 410 411 /* ??? */ 412 #define LL_EXPORTS 0x00000008 413 414 /* Delay loading of this library until really needed. */ 415 #define LL_DELAY_LOAD 0x00000010 416 417 /* ??? Delta C++ stuff ??? */ 418 #define LL_DELTA 0x00000020 419 420 421 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 422 .dynsym section. Each element has the following type. */ 423 typedef unsigned long Elf32_Conflict; 424 typedef unsigned char Elf32_External_Conflict[4]; 425 426 typedef unsigned long Elf64_Conflict; 427 typedef unsigned char Elf64_External_Conflict[8]; 428 429 /* A section of type SHT_MIPS_GPTAB contains information about how 430 much GP space would be required for different -G arguments. This 431 information is only used so that the linker can provide informative 432 suggestions as to the best -G value to use. The sh_info field is 433 the index of the section for which this information applies. The 434 contents of the section are an array of the following union. The 435 first element uses the gt_header field. The remaining elements use 436 the gt_entry field. */ 437 typedef union 438 { 439 struct 440 { 441 /* -G value actually used for this object file. */ 442 unsigned long gt_current_g_value; 443 /* Unused. */ 444 unsigned long gt_unused; 445 } gt_header; 446 struct 447 { 448 /* If this -G argument has been used... */ 449 unsigned long gt_g_value; 450 /* ...this many GP section bytes would be required. */ 451 unsigned long gt_bytes; 452 } gt_entry; 453 } Elf32_gptab; 454 455 /* The external version of Elf32_gptab. */ 456 457 typedef union 458 { 459 struct 460 { 461 unsigned char gt_current_g_value[4]; 462 unsigned char gt_unused[4]; 463 } gt_header; 464 struct 465 { 466 unsigned char gt_g_value[4]; 467 unsigned char gt_bytes[4]; 468 } gt_entry; 469 } Elf32_External_gptab; 470 471 /* A section of type SHT_MIPS_REGINFO contains the following 472 structure. */ 473 typedef struct 474 { 475 /* Mask of general purpose registers used. */ 476 unsigned long ri_gprmask; 477 /* Mask of co-processor registers used. */ 478 unsigned long ri_cprmask[4]; 479 /* GP register value for this object file. */ 480 long ri_gp_value; 481 } Elf32_RegInfo; 482 483 /* The external version of the Elf_RegInfo structure. */ 484 typedef struct 485 { 486 unsigned char ri_gprmask[4]; 487 unsigned char ri_cprmask[4][4]; 488 unsigned char ri_gp_value[4]; 489 } Elf32_External_RegInfo; 490 491 /* MIPS ELF .reginfo swapping routines. */ 492 extern void bfd_mips_elf32_swap_reginfo_in 493 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 494 extern void bfd_mips_elf32_swap_reginfo_out 495 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 496 497 /* Processor specific section flags. */ 498 499 /* This section must be in the global data area. */ 500 #define SHF_MIPS_GPREL 0x10000000 501 502 /* This section should be merged. */ 503 #define SHF_MIPS_MERGE 0x20000000 504 505 /* This section contains address data of size implied by section 506 element size. */ 507 #define SHF_MIPS_ADDR 0x40000000 508 509 /* This section contains string data. */ 510 #define SHF_MIPS_STRING 0x80000000 511 512 /* This section may not be stripped. */ 513 #define SHF_MIPS_NOSTRIP 0x08000000 514 515 /* This section is local to threads. */ 516 #define SHF_MIPS_LOCAL 0x04000000 517 518 /* Linker should generate implicit weak names for this section. */ 519 #define SHF_MIPS_NAMES 0x02000000 520 521 /* Section contais text/data which may be replicated in other sections. 522 Linker should retain only one copy. */ 523 #define SHF_MIPS_NODUPES 0x01000000 524 525 /* Processor specific program header types. */ 526 527 /* Register usage information. Identifies one .reginfo section. */ 528 #define PT_MIPS_REGINFO 0x70000000 529 530 /* Runtime procedure table. */ 531 #define PT_MIPS_RTPROC 0x70000001 532 533 /* .MIPS.options section. */ 534 #define PT_MIPS_OPTIONS 0x70000002 535 536 /* Processor specific dynamic array tags. */ 537 538 /* 32 bit version number for runtime linker interface. */ 539 #define DT_MIPS_RLD_VERSION 0x70000001 540 541 /* Time stamp. */ 542 #define DT_MIPS_TIME_STAMP 0x70000002 543 544 /* Checksum of external strings and common sizes. */ 545 #define DT_MIPS_ICHECKSUM 0x70000003 546 547 /* Index of version string in string table. */ 548 #define DT_MIPS_IVERSION 0x70000004 549 550 /* 32 bits of flags. */ 551 #define DT_MIPS_FLAGS 0x70000005 552 553 /* Base address of the segment. */ 554 #define DT_MIPS_BASE_ADDRESS 0x70000006 555 556 /* ??? */ 557 #define DT_MIPS_MSYM 0x70000007 558 559 /* Address of .conflict section. */ 560 #define DT_MIPS_CONFLICT 0x70000008 561 562 /* Address of .liblist section. */ 563 #define DT_MIPS_LIBLIST 0x70000009 564 565 /* Number of local global offset table entries. */ 566 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 567 568 /* Number of entries in the .conflict section. */ 569 #define DT_MIPS_CONFLICTNO 0x7000000b 570 571 /* Number of entries in the .liblist section. */ 572 #define DT_MIPS_LIBLISTNO 0x70000010 573 574 /* Number of entries in the .dynsym section. */ 575 #define DT_MIPS_SYMTABNO 0x70000011 576 577 /* Index of first external dynamic symbol not referenced locally. */ 578 #define DT_MIPS_UNREFEXTNO 0x70000012 579 580 /* Index of first dynamic symbol in global offset table. */ 581 #define DT_MIPS_GOTSYM 0x70000013 582 583 /* Number of page table entries in global offset table. */ 584 #define DT_MIPS_HIPAGENO 0x70000014 585 586 /* Address of run time loader map, used for debugging. */ 587 #define DT_MIPS_RLD_MAP 0x70000016 588 589 /* Delta C++ class definition. */ 590 #define DT_MIPS_DELTA_CLASS 0x70000017 591 592 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 593 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 594 595 /* Delta C++ class instances. */ 596 #define DT_MIPS_DELTA_INSTANCE 0x70000019 597 598 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 599 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 600 601 /* Delta relocations. */ 602 #define DT_MIPS_DELTA_RELOC 0x7000001b 603 604 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 605 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 606 607 /* Delta symbols that Delta relocations refer to. */ 608 #define DT_MIPS_DELTA_SYM 0x7000001d 609 610 /* Number of entries in DT_MIPS_DELTA_SYM. */ 611 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 612 613 /* Delta symbols that hold class declarations. */ 614 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 615 616 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 617 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 618 619 /* Flags indicating information about C++ flavor. */ 620 #define DT_MIPS_CXX_FLAGS 0x70000022 621 622 /* Pixie information (???). */ 623 #define DT_MIPS_PIXIE_INIT 0x70000023 624 625 /* Address of .MIPS.symlib */ 626 #define DT_MIPS_SYMBOL_LIB 0x70000024 627 628 /* The GOT index of the first PTE for a segment */ 629 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 630 631 /* The GOT index of the first PTE for a local symbol */ 632 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 633 634 /* The GOT index of the first PTE for a hidden symbol */ 635 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 636 637 /* The GOT index of the first PTE for a protected symbol */ 638 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 639 640 /* Address of `.MIPS.options'. */ 641 #define DT_MIPS_OPTIONS 0x70000029 642 643 /* Address of `.interface'. */ 644 #define DT_MIPS_INTERFACE 0x7000002a 645 646 /* ??? */ 647 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 648 649 /* Size of the .interface section. */ 650 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 651 652 /* Size of rld_text_resolve function stored in the GOT. */ 653 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 654 655 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 656 #define DT_MIPS_PERF_SUFFIX 0x7000002e 657 658 /* Size of compact relocation section (O32). */ 659 #define DT_MIPS_COMPACT_SIZE 0x7000002f 660 661 /* GP value for auxiliary GOTs. */ 662 #define DT_MIPS_GP_VALUE 0x70000030 663 664 /* Address of auxiliary .dynamic. */ 665 #define DT_MIPS_AUX_DYNAMIC 0x70000031 666 667 /* Address of the base of the PLTGOT. */ 668 #define DT_MIPS_PLTGOT 0x70000032 669 670 /* Points to the base of a writable PLT. */ 671 #define DT_MIPS_RWPLT 0x70000034 672 673 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 674 675 /* No flags. */ 676 #define RHF_NONE 0x00000000 677 678 /* Uses shortcut pointers. */ 679 #define RHF_QUICKSTART 0x00000001 680 681 /* Hash size is not a power of two. */ 682 #define RHF_NOTPOT 0x00000002 683 684 /* Ignore LD_LIBRARY_PATH. */ 685 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 686 687 /* DSO address may not be relocated. */ 688 #define RHF_NO_MOVE 0x00000008 689 690 /* SGI specific features. */ 691 #define RHF_SGI_ONLY 0x00000010 692 693 /* Guarantee that .init will finish executing before any non-init 694 code in DSO is called. */ 695 #define RHF_GUARANTEE_INIT 0x00000020 696 697 /* Contains Delta C++ code. */ 698 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 699 700 /* Guarantee that .init will start executing before any non-init 701 code in DSO is called. */ 702 #define RHF_GUARANTEE_START_INIT 0x00000080 703 704 /* Generated by pixie. */ 705 #define RHF_PIXIE 0x00000100 706 707 /* Delay-load DSO by default. */ 708 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 709 710 /* Object may be requickstarted */ 711 #define RHF_REQUICKSTART 0x00000400 712 713 /* Object has been requickstarted */ 714 #define RHF_REQUICKSTARTED 0x00000800 715 716 /* Generated by cord. */ 717 #define RHF_CORD 0x00001000 718 719 /* Object contains no unresolved undef symbols. */ 720 #define RHF_NO_UNRES_UNDEF 0x00002000 721 722 /* Symbol table is in a safe order. */ 723 #define RHF_RLD_ORDER_SAFE 0x00004000 724 725 /* Special values for the st_other field in the symbol table. These 726 are used in an Irix 5 dynamic symbol table. */ 727 728 #define STO_DEFAULT STV_DEFAULT 729 #define STO_INTERNAL STV_INTERNAL 730 #define STO_HIDDEN STV_HIDDEN 731 #define STO_PROTECTED STV_PROTECTED 732 733 /* The MIPS psABI was updated in 2008 with support for PLTs and copy 734 relocs. There are therefore two types of nonzero SHN_UNDEF functions: 735 PLT entries and traditional MIPS lazy binding stubs. We mark the former 736 with STO_MIPS_PLT to distinguish them from the latter. */ 737 #define STO_MIPS_PLT 0x8 738 739 /* This value is used to mark PIC functions in an object that mixes 740 PIC and non-PIC. */ 741 #define STO_MIPS_PIC 0x20 742 #define ELF_ST_IS_MIPS_PIC(OTHER) \ 743 (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC) 744 #define ELF_ST_SET_MIPS_PIC(OTHER) \ 745 (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER)) 746 747 /* This value is used for a mips16 .text symbol. */ 748 #define STO_MIPS16 0xf0 749 #define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16) 750 #define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16) 751 752 /* This bit is used on Irix to indicate a symbol whose definition 753 is optional - if, at final link time, it cannot be found, no 754 error message should be produced. */ 755 #define STO_OPTIONAL (1 << 2) 756 /* A macro to examine the STO_OPTIONAL bit. */ 757 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 758 759 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 760 relocation entry specifies up to three actual relocations, all at 761 the same address. The first relocation which required a symbol 762 uses the symbol in the r_sym field. The second relocation which 763 requires a symbol uses the symbol in the r_ssym field. If all 764 three relocations require a symbol, the third one uses a zero 765 value. */ 766 767 /* An entry in a 64 bit SHT_REL section. */ 768 769 typedef struct 770 { 771 /* Address of relocation. */ 772 unsigned char r_offset[8]; 773 /* Symbol index. */ 774 unsigned char r_sym[4]; 775 /* Special symbol. */ 776 unsigned char r_ssym[1]; 777 /* Third relocation. */ 778 unsigned char r_type3[1]; 779 /* Second relocation. */ 780 unsigned char r_type2[1]; 781 /* First relocation. */ 782 unsigned char r_type[1]; 783 } Elf64_Mips_External_Rel; 784 785 typedef struct 786 { 787 /* Address of relocation. */ 788 bfd_vma r_offset; 789 /* Symbol index. */ 790 unsigned long r_sym; 791 /* Special symbol. */ 792 unsigned char r_ssym; 793 /* Third relocation. */ 794 unsigned char r_type3; 795 /* Second relocation. */ 796 unsigned char r_type2; 797 /* First relocation. */ 798 unsigned char r_type; 799 } Elf64_Mips_Internal_Rel; 800 801 /* An entry in a 64 bit SHT_RELA section. */ 802 803 typedef struct 804 { 805 /* Address of relocation. */ 806 unsigned char r_offset[8]; 807 /* Symbol index. */ 808 unsigned char r_sym[4]; 809 /* Special symbol. */ 810 unsigned char r_ssym[1]; 811 /* Third relocation. */ 812 unsigned char r_type3[1]; 813 /* Second relocation. */ 814 unsigned char r_type2[1]; 815 /* First relocation. */ 816 unsigned char r_type[1]; 817 /* Addend. */ 818 unsigned char r_addend[8]; 819 } Elf64_Mips_External_Rela; 820 821 typedef struct 822 { 823 /* Address of relocation. */ 824 bfd_vma r_offset; 825 /* Symbol index. */ 826 unsigned long r_sym; 827 /* Special symbol. */ 828 unsigned char r_ssym; 829 /* Third relocation. */ 830 unsigned char r_type3; 831 /* Second relocation. */ 832 unsigned char r_type2; 833 /* First relocation. */ 834 unsigned char r_type; 835 /* Addend. */ 836 bfd_signed_vma r_addend; 837 } Elf64_Mips_Internal_Rela; 838 839 /* MIPS ELF 64 relocation info access macros. */ 840 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 841 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 842 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 843 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 844 845 /* Values found in the r_ssym field of a relocation entry. */ 846 847 /* No relocation. */ 848 #define RSS_UNDEF 0 849 850 /* Value of GP. */ 851 #define RSS_GP 1 852 853 /* Value of GP in object being relocated. */ 854 #define RSS_GP0 2 855 856 /* Address of location being relocated. */ 857 #define RSS_LOC 3 858 859 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 860 which starts with this header. */ 861 862 typedef struct 863 { 864 /* Type of option. */ 865 unsigned char kind[1]; 866 /* Size of option descriptor, including header. */ 867 unsigned char size[1]; 868 /* Section index of affected section, or 0 for global option. */ 869 unsigned char section[2]; 870 /* Information specific to this kind of option. */ 871 unsigned char info[4]; 872 } Elf_External_Options; 873 874 typedef struct 875 { 876 /* Type of option. */ 877 unsigned char kind; 878 /* Size of option descriptor, including header. */ 879 unsigned char size; 880 /* Section index of affected section, or 0 for global option. */ 881 unsigned short section; 882 /* Information specific to this kind of option. */ 883 unsigned long info; 884 } Elf_Internal_Options; 885 886 /* MIPS ELF option header swapping routines. */ 887 extern void bfd_mips_elf_swap_options_in 888 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 889 extern void bfd_mips_elf_swap_options_out 890 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 891 892 /* Values which may appear in the kind field of an Elf_Options 893 structure. */ 894 895 /* Undefined. */ 896 #define ODK_NULL 0 897 898 /* Register usage and GP value. */ 899 #define ODK_REGINFO 1 900 901 /* Exception processing information. */ 902 #define ODK_EXCEPTIONS 2 903 904 /* Section padding information. */ 905 #define ODK_PAD 3 906 907 /* Hardware workarounds performed. */ 908 #define ODK_HWPATCH 4 909 910 /* Fill value used by the linker. */ 911 #define ODK_FILL 5 912 913 /* Reserved space for desktop tools. */ 914 #define ODK_TAGS 6 915 916 /* Hardware workarounds, AND bits when merging. */ 917 #define ODK_HWAND 7 918 919 /* Hardware workarounds, OR bits when merging. */ 920 #define ODK_HWOR 8 921 922 /* GP group to use for text/data sections. */ 923 #define ODK_GP_GROUP 9 924 925 /* ID information. */ 926 #define ODK_IDENT 10 927 928 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 929 structure. In the 64 bit ABI, it is the following structure. The 930 info field of the options header is not used. */ 931 932 typedef struct 933 { 934 /* Mask of general purpose registers used. */ 935 unsigned char ri_gprmask[4]; 936 /* Padding. */ 937 unsigned char ri_pad[4]; 938 /* Mask of co-processor registers used. */ 939 unsigned char ri_cprmask[4][4]; 940 /* GP register value for this object file. */ 941 unsigned char ri_gp_value[8]; 942 } Elf64_External_RegInfo; 943 944 typedef struct 945 { 946 /* Mask of general purpose registers used. */ 947 unsigned long ri_gprmask; 948 /* Padding. */ 949 unsigned long ri_pad; 950 /* Mask of co-processor registers used. */ 951 unsigned long ri_cprmask[4]; 952 /* GP register value for this object file. */ 953 bfd_vma ri_gp_value; 954 } Elf64_Internal_RegInfo; 955 956 typedef struct 957 { 958 /* The hash value computed from the name of the corresponding 959 dynamic symbol. */ 960 unsigned char ms_hash_value[4]; 961 /* Contains both the dynamic relocation index and the symbol flags 962 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 963 to access the individual values. The dynamic relocation index 964 identifies the first entry in the .rel.dyn section that 965 references the dynamic symbol corresponding to this msym entry. 966 If the index is 0, no dynamic relocations are associated with the 967 symbol. The symbol flags field is reserved for future use. */ 968 unsigned char ms_info[4]; 969 } Elf32_External_Msym; 970 971 typedef struct 972 { 973 /* The hash value computed from the name of the corresponding 974 dynamic symbol. */ 975 unsigned long ms_hash_value; 976 /* Contains both the dynamic relocation index and the symbol flags 977 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 978 to access the individual values. The dynamic relocation index 979 identifies the first entry in the .rel.dyn section that 980 references the dynamic symbol corresponding to this msym entry. 981 If the index is 0, no dynamic relocations are associated with the 982 symbol. The symbol flags field is reserved for future use. */ 983 unsigned long ms_info; 984 } Elf32_Internal_Msym; 985 986 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 987 #define ELF32_MS_FLAGS(i) (i) & 0xff) 988 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 989 990 /* MIPS ELF reginfo swapping routines. */ 991 extern void bfd_mips_elf64_swap_reginfo_in 992 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 993 extern void bfd_mips_elf64_swap_reginfo_out 994 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 995 996 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 997 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 998 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 999 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 1000 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 1001 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 1002 exceptions (debug mode). */ 1003 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 1004 1005 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 1006 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 1007 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 1008 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 1009 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 1010 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 1011 1012 /* Masks for the info word of an ODK_PAD descriptor. */ 1013 #define OPAD_PREFIX 0x01 1014 #define OPAD_POSTFIX 0x02 1015 #define OPAD_SYMBOL 0x04 1016 1017 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 1018 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 1019 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 1020 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 1021 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 1022 (clean == 1). */ 1023 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 1024 load patch. */ 1025 1026 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1027 #define OGP_GROUP 0x0000ffff /* GP group number. */ 1028 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1029 1030 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1031 #define OHWA0_R4KEOP_CHECKED 0x00000001 1032 #define OHWA0_R4KEOP_CLEAN 0x00000002 1033 1034 1035 /* Object attribute tags. */ 1036 enum 1037 { 1038 /* 0-3 are generic. */ 1039 Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2 1040 for hard-float -msingle-float, 3 for 1041 soft-float, 4 for -mips32r2 -mfp64; 0 for 1042 not tagged or not using any ABIs affected 1043 by the differences. */ 1044 }; 1045 1046 #endif /* _ELF_MIPS_H */ 1047