1 /* MIPS ELF support for BFD. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005 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_5400 0x00910000 218 #define E_MIPS_MACH_5500 0x00980000 219 #define E_MIPS_MACH_9000 0x00990000 220 221 /* Processor specific section indices. These sections do not actually 222 exist. Symbols with a st_shndx field corresponding to one of these 223 values have a special meaning. */ 224 225 /* Defined and allocated common symbol. Value is virtual address. If 226 relocated, alignment must be preserved. */ 227 #define SHN_MIPS_ACOMMON 0xff00 228 229 /* Defined and allocated text symbol. Value is virtual address. 230 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 231 #define SHN_MIPS_TEXT 0xff01 232 233 /* Defined and allocated data symbol. Value is virtual address. 234 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 235 #define SHN_MIPS_DATA 0xff02 236 237 /* Small common symbol. */ 238 #define SHN_MIPS_SCOMMON 0xff03 239 240 /* Small undefined symbol. */ 241 #define SHN_MIPS_SUNDEFINED 0xff04 242 243 /* Processor specific section types. */ 244 245 /* Section contains the set of dynamic shared objects used when 246 statically linking. */ 247 #define SHT_MIPS_LIBLIST 0x70000000 248 249 /* I'm not sure what this is, but it's used on Irix 5. */ 250 #define SHT_MIPS_MSYM 0x70000001 251 252 /* Section contains list of symbols whose definitions conflict with 253 symbols defined in shared objects. */ 254 #define SHT_MIPS_CONFLICT 0x70000002 255 256 /* Section contains the global pointer table. */ 257 #define SHT_MIPS_GPTAB 0x70000003 258 259 /* Section contains microcode information. The exact format is 260 unspecified. */ 261 #define SHT_MIPS_UCODE 0x70000004 262 263 /* Section contains some sort of debugging information. The exact 264 format is unspecified. It's probably ECOFF symbols. */ 265 #define SHT_MIPS_DEBUG 0x70000005 266 267 /* Section contains register usage information. */ 268 #define SHT_MIPS_REGINFO 0x70000006 269 270 /* ??? */ 271 #define SHT_MIPS_PACKAGE 0x70000007 272 273 /* ??? */ 274 #define SHT_MIPS_PACKSYM 0x70000008 275 276 /* ??? */ 277 #define SHT_MIPS_RELD 0x70000009 278 279 /* Section contains interface information. */ 280 #define SHT_MIPS_IFACE 0x7000000b 281 282 /* Section contains description of contents of another section. */ 283 #define SHT_MIPS_CONTENT 0x7000000c 284 285 /* Section contains miscellaneous options. */ 286 #define SHT_MIPS_OPTIONS 0x7000000d 287 288 /* ??? */ 289 #define SHT_MIPS_SHDR 0x70000010 290 291 /* ??? */ 292 #define SHT_MIPS_FDESC 0x70000011 293 294 /* ??? */ 295 #define SHT_MIPS_EXTSYM 0x70000012 296 297 /* ??? */ 298 #define SHT_MIPS_DENSE 0x70000013 299 300 /* ??? */ 301 #define SHT_MIPS_PDESC 0x70000014 302 303 /* ??? */ 304 #define SHT_MIPS_LOCSYM 0x70000015 305 306 /* ??? */ 307 #define SHT_MIPS_AUXSYM 0x70000016 308 309 /* ??? */ 310 #define SHT_MIPS_OPTSYM 0x70000017 311 312 /* ??? */ 313 #define SHT_MIPS_LOCSTR 0x70000018 314 315 /* ??? */ 316 #define SHT_MIPS_LINE 0x70000019 317 318 /* ??? */ 319 #define SHT_MIPS_RFDESC 0x7000001a 320 321 /* Delta C++: symbol table */ 322 #define SHT_MIPS_DELTASYM 0x7000001b 323 324 /* Delta C++: instance table */ 325 #define SHT_MIPS_DELTAINST 0x7000001c 326 327 /* Delta C++: class table */ 328 #define SHT_MIPS_DELTACLASS 0x7000001d 329 330 /* DWARF debugging section. */ 331 #define SHT_MIPS_DWARF 0x7000001e 332 333 /* Delta C++: declarations */ 334 #define SHT_MIPS_DELTADECL 0x7000001f 335 336 /* List of libraries the binary depends on. Includes a time stamp, version 337 number. */ 338 #define SHT_MIPS_SYMBOL_LIB 0x70000020 339 340 /* Events section. */ 341 #define SHT_MIPS_EVENTS 0x70000021 342 343 /* ??? */ 344 #define SHT_MIPS_TRANSLATE 0x70000022 345 346 /* Special pixie sections */ 347 #define SHT_MIPS_PIXIE 0x70000023 348 349 /* Address translation table (for debug info) */ 350 #define SHT_MIPS_XLATE 0x70000024 351 352 /* SGI internal address translation table (for debug info) */ 353 #define SHT_MIPS_XLATE_DEBUG 0x70000025 354 355 /* Intermediate code */ 356 #define SHT_MIPS_WHIRL 0x70000026 357 358 /* C++ exception handling region info */ 359 #define SHT_MIPS_EH_REGION 0x70000027 360 361 /* Obsolete address translation table (for debug info) */ 362 #define SHT_MIPS_XLATE_OLD 0x70000028 363 364 /* Runtime procedure descriptor table exception information (ucode) ??? */ 365 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 366 367 368 /* A section of type SHT_MIPS_LIBLIST contains an array of the 369 following structure. The sh_link field is the section index of the 370 string table. The sh_info field is the number of entries in the 371 section. */ 372 typedef struct 373 { 374 /* String table index for name of shared object. */ 375 unsigned long l_name; 376 /* Time stamp. */ 377 unsigned long l_time_stamp; 378 /* Checksum of symbol names and common sizes. */ 379 unsigned long l_checksum; 380 /* String table index for version. */ 381 unsigned long l_version; 382 /* Flags. */ 383 unsigned long l_flags; 384 } Elf32_Lib; 385 386 /* The external version of Elf32_Lib. */ 387 typedef struct 388 { 389 unsigned char l_name[4]; 390 unsigned char l_time_stamp[4]; 391 unsigned char l_checksum[4]; 392 unsigned char l_version[4]; 393 unsigned char l_flags[4]; 394 } Elf32_External_Lib; 395 396 /* The l_flags field of an Elf32_Lib structure may contain the 397 following flags. */ 398 399 /* Require an exact match at runtime. */ 400 #define LL_EXACT_MATCH 0x00000001 401 402 /* Ignore version incompatibilities at runtime. */ 403 #define LL_IGNORE_INT_VER 0x00000002 404 405 /* Require matching minor version number. */ 406 #define LL_REQUIRE_MINOR 0x00000004 407 408 /* ??? */ 409 #define LL_EXPORTS 0x00000008 410 411 /* Delay loading of this library until really needed. */ 412 #define LL_DELAY_LOAD 0x00000010 413 414 /* ??? Delta C++ stuff ??? */ 415 #define LL_DELTA 0x00000020 416 417 418 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 419 .dynsym section. Each element has the following type. */ 420 typedef unsigned long Elf32_Conflict; 421 typedef unsigned char Elf32_External_Conflict[4]; 422 423 typedef unsigned long Elf64_Conflict; 424 typedef unsigned char Elf64_External_Conflict[8]; 425 426 /* A section of type SHT_MIPS_GPTAB contains information about how 427 much GP space would be required for different -G arguments. This 428 information is only used so that the linker can provide informative 429 suggestions as to the best -G value to use. The sh_info field is 430 the index of the section for which this information applies. The 431 contents of the section are an array of the following union. The 432 first element uses the gt_header field. The remaining elements use 433 the gt_entry field. */ 434 typedef union 435 { 436 struct 437 { 438 /* -G value actually used for this object file. */ 439 unsigned long gt_current_g_value; 440 /* Unused. */ 441 unsigned long gt_unused; 442 } gt_header; 443 struct 444 { 445 /* If this -G argument has been used... */ 446 unsigned long gt_g_value; 447 /* ...this many GP section bytes would be required. */ 448 unsigned long gt_bytes; 449 } gt_entry; 450 } Elf32_gptab; 451 452 /* The external version of Elf32_gptab. */ 453 454 typedef union 455 { 456 struct 457 { 458 unsigned char gt_current_g_value[4]; 459 unsigned char gt_unused[4]; 460 } gt_header; 461 struct 462 { 463 unsigned char gt_g_value[4]; 464 unsigned char gt_bytes[4]; 465 } gt_entry; 466 } Elf32_External_gptab; 467 468 /* A section of type SHT_MIPS_REGINFO contains the following 469 structure. */ 470 typedef struct 471 { 472 /* Mask of general purpose registers used. */ 473 unsigned long ri_gprmask; 474 /* Mask of co-processor registers used. */ 475 unsigned long ri_cprmask[4]; 476 /* GP register value for this object file. */ 477 long ri_gp_value; 478 } Elf32_RegInfo; 479 480 /* The external version of the Elf_RegInfo structure. */ 481 typedef struct 482 { 483 unsigned char ri_gprmask[4]; 484 unsigned char ri_cprmask[4][4]; 485 unsigned char ri_gp_value[4]; 486 } Elf32_External_RegInfo; 487 488 /* MIPS ELF .reginfo swapping routines. */ 489 extern void bfd_mips_elf32_swap_reginfo_in 490 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 491 extern void bfd_mips_elf32_swap_reginfo_out 492 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 493 494 /* Processor specific section flags. */ 495 496 /* This section must be in the global data area. */ 497 #define SHF_MIPS_GPREL 0x10000000 498 499 /* This section should be merged. */ 500 #define SHF_MIPS_MERGE 0x20000000 501 502 /* This section contains address data of size implied by section 503 element size. */ 504 #define SHF_MIPS_ADDR 0x40000000 505 506 /* This section contains string data. */ 507 #define SHF_MIPS_STRING 0x80000000 508 509 /* This section may not be stripped. */ 510 #define SHF_MIPS_NOSTRIP 0x08000000 511 512 /* This section is local to threads. */ 513 #define SHF_MIPS_LOCAL 0x04000000 514 515 /* Linker should generate implicit weak names for this section. */ 516 #define SHF_MIPS_NAMES 0x02000000 517 518 /* Section contais text/data which may be replicated in other sections. 519 Linker should retain only one copy. */ 520 #define SHF_MIPS_NODUPES 0x01000000 521 522 /* Processor specific program header types. */ 523 524 /* Register usage information. Identifies one .reginfo section. */ 525 #define PT_MIPS_REGINFO 0x70000000 526 527 /* Runtime procedure table. */ 528 #define PT_MIPS_RTPROC 0x70000001 529 530 /* .MIPS.options section. */ 531 #define PT_MIPS_OPTIONS 0x70000002 532 533 /* Processor specific dynamic array tags. */ 534 535 /* 32 bit version number for runtime linker interface. */ 536 #define DT_MIPS_RLD_VERSION 0x70000001 537 538 /* Time stamp. */ 539 #define DT_MIPS_TIME_STAMP 0x70000002 540 541 /* Checksum of external strings and common sizes. */ 542 #define DT_MIPS_ICHECKSUM 0x70000003 543 544 /* Index of version string in string table. */ 545 #define DT_MIPS_IVERSION 0x70000004 546 547 /* 32 bits of flags. */ 548 #define DT_MIPS_FLAGS 0x70000005 549 550 /* Base address of the segment. */ 551 #define DT_MIPS_BASE_ADDRESS 0x70000006 552 553 /* ??? */ 554 #define DT_MIPS_MSYM 0x70000007 555 556 /* Address of .conflict section. */ 557 #define DT_MIPS_CONFLICT 0x70000008 558 559 /* Address of .liblist section. */ 560 #define DT_MIPS_LIBLIST 0x70000009 561 562 /* Number of local global offset table entries. */ 563 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 564 565 /* Number of entries in the .conflict section. */ 566 #define DT_MIPS_CONFLICTNO 0x7000000b 567 568 /* Number of entries in the .liblist section. */ 569 #define DT_MIPS_LIBLISTNO 0x70000010 570 571 /* Number of entries in the .dynsym section. */ 572 #define DT_MIPS_SYMTABNO 0x70000011 573 574 /* Index of first external dynamic symbol not referenced locally. */ 575 #define DT_MIPS_UNREFEXTNO 0x70000012 576 577 /* Index of first dynamic symbol in global offset table. */ 578 #define DT_MIPS_GOTSYM 0x70000013 579 580 /* Number of page table entries in global offset table. */ 581 #define DT_MIPS_HIPAGENO 0x70000014 582 583 /* Address of run time loader map, used for debugging. */ 584 #define DT_MIPS_RLD_MAP 0x70000016 585 586 /* Delta C++ class definition. */ 587 #define DT_MIPS_DELTA_CLASS 0x70000017 588 589 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 590 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 591 592 /* Delta C++ class instances. */ 593 #define DT_MIPS_DELTA_INSTANCE 0x70000019 594 595 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 596 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 597 598 /* Delta relocations. */ 599 #define DT_MIPS_DELTA_RELOC 0x7000001b 600 601 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 602 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 603 604 /* Delta symbols that Delta relocations refer to. */ 605 #define DT_MIPS_DELTA_SYM 0x7000001d 606 607 /* Number of entries in DT_MIPS_DELTA_SYM. */ 608 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 609 610 /* Delta symbols that hold class declarations. */ 611 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 612 613 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 614 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 615 616 /* Flags indicating information about C++ flavor. */ 617 #define DT_MIPS_CXX_FLAGS 0x70000022 618 619 /* Pixie information (???). */ 620 #define DT_MIPS_PIXIE_INIT 0x70000023 621 622 /* Address of .MIPS.symlib */ 623 #define DT_MIPS_SYMBOL_LIB 0x70000024 624 625 /* The GOT index of the first PTE for a segment */ 626 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 627 628 /* The GOT index of the first PTE for a local symbol */ 629 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 630 631 /* The GOT index of the first PTE for a hidden symbol */ 632 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 633 634 /* The GOT index of the first PTE for a protected symbol */ 635 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 636 637 /* Address of `.MIPS.options'. */ 638 #define DT_MIPS_OPTIONS 0x70000029 639 640 /* Address of `.interface'. */ 641 #define DT_MIPS_INTERFACE 0x7000002a 642 643 /* ??? */ 644 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 645 646 /* Size of the .interface section. */ 647 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 648 649 /* Size of rld_text_resolve function stored in the GOT. */ 650 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 651 652 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 653 #define DT_MIPS_PERF_SUFFIX 0x7000002e 654 655 /* Size of compact relocation section (O32). */ 656 #define DT_MIPS_COMPACT_SIZE 0x7000002f 657 658 /* GP value for auxiliary GOTs. */ 659 #define DT_MIPS_GP_VALUE 0x70000030 660 661 /* Address of auxiliary .dynamic. */ 662 #define DT_MIPS_AUX_DYNAMIC 0x70000031 663 664 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 665 666 /* No flags. */ 667 #define RHF_NONE 0x00000000 668 669 /* Uses shortcut pointers. */ 670 #define RHF_QUICKSTART 0x00000001 671 672 /* Hash size is not a power of two. */ 673 #define RHF_NOTPOT 0x00000002 674 675 /* Ignore LD_LIBRARY_PATH. */ 676 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 677 678 /* DSO address may not be relocated. */ 679 #define RHF_NO_MOVE 0x00000008 680 681 /* SGI specific features. */ 682 #define RHF_SGI_ONLY 0x00000010 683 684 /* Guarantee that .init will finish executing before any non-init 685 code in DSO is called. */ 686 #define RHF_GUARANTEE_INIT 0x00000020 687 688 /* Contains Delta C++ code. */ 689 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 690 691 /* Guarantee that .init will start executing before any non-init 692 code in DSO is called. */ 693 #define RHF_GUARANTEE_START_INIT 0x00000080 694 695 /* Generated by pixie. */ 696 #define RHF_PIXIE 0x00000100 697 698 /* Delay-load DSO by default. */ 699 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 700 701 /* Object may be requickstarted */ 702 #define RHF_REQUICKSTART 0x00000400 703 704 /* Object has been requickstarted */ 705 #define RHF_REQUICKSTARTED 0x00000800 706 707 /* Generated by cord. */ 708 #define RHF_CORD 0x00001000 709 710 /* Object contains no unresolved undef symbols. */ 711 #define RHF_NO_UNRES_UNDEF 0x00002000 712 713 /* Symbol table is in a safe order. */ 714 #define RHF_RLD_ORDER_SAFE 0x00004000 715 716 /* Special values for the st_other field in the symbol table. These 717 are used in an Irix 5 dynamic symbol table. */ 718 719 #define STO_DEFAULT STV_DEFAULT 720 #define STO_INTERNAL STV_INTERNAL 721 #define STO_HIDDEN STV_HIDDEN 722 #define STO_PROTECTED STV_PROTECTED 723 724 /* This value is used for a mips16 .text symbol. */ 725 #define STO_MIPS16 0xf0 726 727 /* This bit is used on Irix to indicate a symbol whose definition 728 is optional - if, at final link time, it cannot be found, no 729 error message should be produced. */ 730 #define STO_OPTIONAL (1 << 2) 731 /* A macro to examine the STO_OPTIONAL bit. */ 732 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 733 734 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 735 relocation entry specifies up to three actual relocations, all at 736 the same address. The first relocation which required a symbol 737 uses the symbol in the r_sym field. The second relocation which 738 requires a symbol uses the symbol in the r_ssym field. If all 739 three relocations require a symbol, the third one uses a zero 740 value. */ 741 742 /* An entry in a 64 bit SHT_REL section. */ 743 744 typedef struct 745 { 746 /* Address of relocation. */ 747 unsigned char r_offset[8]; 748 /* Symbol index. */ 749 unsigned char r_sym[4]; 750 /* Special symbol. */ 751 unsigned char r_ssym[1]; 752 /* Third relocation. */ 753 unsigned char r_type3[1]; 754 /* Second relocation. */ 755 unsigned char r_type2[1]; 756 /* First relocation. */ 757 unsigned char r_type[1]; 758 } Elf64_Mips_External_Rel; 759 760 typedef struct 761 { 762 /* Address of relocation. */ 763 bfd_vma r_offset; 764 /* Symbol index. */ 765 unsigned long r_sym; 766 /* Special symbol. */ 767 unsigned char r_ssym; 768 /* Third relocation. */ 769 unsigned char r_type3; 770 /* Second relocation. */ 771 unsigned char r_type2; 772 /* First relocation. */ 773 unsigned char r_type; 774 } Elf64_Mips_Internal_Rel; 775 776 /* An entry in a 64 bit SHT_RELA section. */ 777 778 typedef struct 779 { 780 /* Address of relocation. */ 781 unsigned char r_offset[8]; 782 /* Symbol index. */ 783 unsigned char r_sym[4]; 784 /* Special symbol. */ 785 unsigned char r_ssym[1]; 786 /* Third relocation. */ 787 unsigned char r_type3[1]; 788 /* Second relocation. */ 789 unsigned char r_type2[1]; 790 /* First relocation. */ 791 unsigned char r_type[1]; 792 /* Addend. */ 793 unsigned char r_addend[8]; 794 } Elf64_Mips_External_Rela; 795 796 typedef struct 797 { 798 /* Address of relocation. */ 799 bfd_vma r_offset; 800 /* Symbol index. */ 801 unsigned long r_sym; 802 /* Special symbol. */ 803 unsigned char r_ssym; 804 /* Third relocation. */ 805 unsigned char r_type3; 806 /* Second relocation. */ 807 unsigned char r_type2; 808 /* First relocation. */ 809 unsigned char r_type; 810 /* Addend. */ 811 bfd_signed_vma r_addend; 812 } Elf64_Mips_Internal_Rela; 813 814 /* MIPS ELF 64 relocation info access macros. */ 815 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 816 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 817 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 818 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 819 820 /* Values found in the r_ssym field of a relocation entry. */ 821 822 /* No relocation. */ 823 #define RSS_UNDEF 0 824 825 /* Value of GP. */ 826 #define RSS_GP 1 827 828 /* Value of GP in object being relocated. */ 829 #define RSS_GP0 2 830 831 /* Address of location being relocated. */ 832 #define RSS_LOC 3 833 834 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 835 which starts with this header. */ 836 837 typedef struct 838 { 839 /* Type of option. */ 840 unsigned char kind[1]; 841 /* Size of option descriptor, including header. */ 842 unsigned char size[1]; 843 /* Section index of affected section, or 0 for global option. */ 844 unsigned char section[2]; 845 /* Information specific to this kind of option. */ 846 unsigned char info[4]; 847 } Elf_External_Options; 848 849 typedef struct 850 { 851 /* Type of option. */ 852 unsigned char kind; 853 /* Size of option descriptor, including header. */ 854 unsigned char size; 855 /* Section index of affected section, or 0 for global option. */ 856 unsigned short section; 857 /* Information specific to this kind of option. */ 858 unsigned long info; 859 } Elf_Internal_Options; 860 861 /* MIPS ELF option header swapping routines. */ 862 extern void bfd_mips_elf_swap_options_in 863 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 864 extern void bfd_mips_elf_swap_options_out 865 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 866 867 /* Values which may appear in the kind field of an Elf_Options 868 structure. */ 869 870 /* Undefined. */ 871 #define ODK_NULL 0 872 873 /* Register usage and GP value. */ 874 #define ODK_REGINFO 1 875 876 /* Exception processing information. */ 877 #define ODK_EXCEPTIONS 2 878 879 /* Section padding information. */ 880 #define ODK_PAD 3 881 882 /* Hardware workarounds performed. */ 883 #define ODK_HWPATCH 4 884 885 /* Fill value used by the linker. */ 886 #define ODK_FILL 5 887 888 /* Reserved space for desktop tools. */ 889 #define ODK_TAGS 6 890 891 /* Hardware workarounds, AND bits when merging. */ 892 #define ODK_HWAND 7 893 894 /* Hardware workarounds, OR bits when merging. */ 895 #define ODK_HWOR 8 896 897 /* GP group to use for text/data sections. */ 898 #define ODK_GP_GROUP 9 899 900 /* ID information. */ 901 #define ODK_IDENT 10 902 903 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 904 structure. In the 64 bit ABI, it is the following structure. The 905 info field of the options header is not used. */ 906 907 typedef struct 908 { 909 /* Mask of general purpose registers used. */ 910 unsigned char ri_gprmask[4]; 911 /* Padding. */ 912 unsigned char ri_pad[4]; 913 /* Mask of co-processor registers used. */ 914 unsigned char ri_cprmask[4][4]; 915 /* GP register value for this object file. */ 916 unsigned char ri_gp_value[8]; 917 } Elf64_External_RegInfo; 918 919 typedef struct 920 { 921 /* Mask of general purpose registers used. */ 922 unsigned long ri_gprmask; 923 /* Padding. */ 924 unsigned long ri_pad; 925 /* Mask of co-processor registers used. */ 926 unsigned long ri_cprmask[4]; 927 /* GP register value for this object file. */ 928 bfd_vma ri_gp_value; 929 } Elf64_Internal_RegInfo; 930 931 typedef struct 932 { 933 /* The hash value computed from the name of the corresponding 934 dynamic symbol. */ 935 unsigned char ms_hash_value[4]; 936 /* Contains both the dynamic relocation index and the symbol flags 937 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 938 to access the individual values. The dynamic relocation index 939 identifies the first entry in the .rel.dyn section that 940 references the dynamic symbol corresponding to this msym entry. 941 If the index is 0, no dynamic relocations are associated with the 942 symbol. The symbol flags field is reserved for future use. */ 943 unsigned char ms_info[4]; 944 } Elf32_External_Msym; 945 946 typedef struct 947 { 948 /* The hash value computed from the name of the corresponding 949 dynamic symbol. */ 950 unsigned long ms_hash_value; 951 /* Contains both the dynamic relocation index and the symbol flags 952 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 953 to access the individual values. The dynamic relocation index 954 identifies the first entry in the .rel.dyn section that 955 references the dynamic symbol corresponding to this msym entry. 956 If the index is 0, no dynamic relocations are associated with the 957 symbol. The symbol flags field is reserved for future use. */ 958 unsigned long ms_info; 959 } Elf32_Internal_Msym; 960 961 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 962 #define ELF32_MS_FLAGS(i) (i) & 0xff) 963 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 964 965 /* MIPS ELF reginfo swapping routines. */ 966 extern void bfd_mips_elf64_swap_reginfo_in 967 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 968 extern void bfd_mips_elf64_swap_reginfo_out 969 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 970 971 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 972 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 973 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 974 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 975 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 976 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 977 exceptions (debug mode). */ 978 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 979 980 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 981 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 982 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 983 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 984 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 985 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 986 987 /* Masks for the info word of an ODK_PAD descriptor. */ 988 #define OPAD_PREFIX 0x01 989 #define OPAD_POSTFIX 0x02 990 #define OPAD_SYMBOL 0x04 991 992 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 993 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 994 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 995 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 996 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 997 (clean == 1). */ 998 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 999 load patch. */ 1000 1001 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1002 #define OGP_GROUP 0x0000ffff /* GP group number. */ 1003 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1004 1005 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1006 #define OHWA0_R4KEOP_CHECKED 0x00000001 1007 #define OHWA0_R4KEOP_CLEAN 0x00000002 1008 1009 1010 /* Object attribute tags. */ 1011 enum 1012 { 1013 /* 0-3 are generic. */ 1014 Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2 1015 for hard-float -msingle-float, 3 for 1016 soft-float; 0 for not tagged or not 1017 using any ABIs affected by the 1018 differences. */ 1019 }; 1020 1021 #endif /* _ELF_MIPS_H */ 1022