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 FAKE_RELOC (R_MIPS_max, 51) 91 /* These relocs are used for the mips16. */ 92 FAKE_RELOC (R_MIPS16_min, 100) 93 RELOC_NUMBER (R_MIPS16_26, 100) 94 RELOC_NUMBER (R_MIPS16_GPREL, 101) 95 RELOC_NUMBER (R_MIPS16_GOT16, 102) 96 RELOC_NUMBER (R_MIPS16_CALL16, 103) 97 RELOC_NUMBER (R_MIPS16_HI16, 104) 98 RELOC_NUMBER (R_MIPS16_LO16, 105) 99 FAKE_RELOC (R_MIPS16_max, 106) 100 /* These relocations are specific to VxWorks. */ 101 RELOC_NUMBER (R_MIPS_COPY, 126) 102 RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127) 103 /* This was a GNU extension used by embedded-PIC. It was co-opted by 104 mips-linux for exception-handling data. It is no longer used, but 105 should continue to be supported by the linker for backward 106 compatibility. (GCC stopped using it in May, 2004.) */ 107 RELOC_NUMBER (R_MIPS_PC32, 248) 108 /* FIXME: this relocation is used internally by gas. */ 109 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 110 /* These are GNU extensions to enable C++ vtable garbage collection. */ 111 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 112 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 113 END_RELOC_NUMBERS (R_MIPS_maxext) 114 115 /* Processor specific flags for the ELF header e_flags field. */ 116 117 /* At least one .noreorder directive appears in the source. */ 118 #define EF_MIPS_NOREORDER 0x00000001 119 120 /* File contains position independent code. */ 121 #define EF_MIPS_PIC 0x00000002 122 123 /* Code in file uses the standard calling sequence for calling 124 position independent code. */ 125 #define EF_MIPS_CPIC 0x00000004 126 127 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */ 128 #define EF_MIPS_XGOT 0x00000008 129 130 /* Code in file uses UCODE (obsolete) */ 131 #define EF_MIPS_UCODE 0x00000010 132 133 /* Code in file uses new ABI (-n32 on Irix 6). */ 134 #define EF_MIPS_ABI2 0x00000020 135 136 /* Process the .MIPS.options section first by ld */ 137 #define EF_MIPS_OPTIONS_FIRST 0x00000080 138 139 /* Architectural Extensions used by this file */ 140 #define EF_MIPS_ARCH_ASE 0x0f000000 141 142 /* Use MDMX multimedia extensions */ 143 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000 144 145 /* Use MIPS-16 ISA extensions */ 146 #define EF_MIPS_ARCH_ASE_M16 0x04000000 147 148 /* Indicates code compiled for a 64-bit machine in 32-bit mode. 149 (regs are 32-bits wide.) */ 150 #define EF_MIPS_32BITMODE 0x00000100 151 152 /* Four bit MIPS architecture field. */ 153 #define EF_MIPS_ARCH 0xf0000000 154 155 /* -mips1 code. */ 156 #define E_MIPS_ARCH_1 0x00000000 157 158 /* -mips2 code. */ 159 #define E_MIPS_ARCH_2 0x10000000 160 161 /* -mips3 code. */ 162 #define E_MIPS_ARCH_3 0x20000000 163 164 /* -mips4 code. */ 165 #define E_MIPS_ARCH_4 0x30000000 166 167 /* -mips5 code. */ 168 #define E_MIPS_ARCH_5 0x40000000 169 170 /* -mips32 code. */ 171 #define E_MIPS_ARCH_32 0x50000000 172 173 /* -mips64 code. */ 174 #define E_MIPS_ARCH_64 0x60000000 175 176 /* -mips32r2 code. */ 177 #define E_MIPS_ARCH_32R2 0x70000000 178 179 /* -mips64r2 code. */ 180 #define E_MIPS_ARCH_64R2 0x80000000 181 182 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 183 #define EF_MIPS_ABI 0x0000F000 184 185 /* The original o32 abi. */ 186 #define E_MIPS_ABI_O32 0x00001000 187 188 /* O32 extended to work on 64 bit architectures */ 189 #define E_MIPS_ABI_O64 0x00002000 190 191 /* EABI in 32 bit mode */ 192 #define E_MIPS_ABI_EABI32 0x00003000 193 194 /* EABI in 64 bit mode */ 195 #define E_MIPS_ABI_EABI64 0x00004000 196 197 198 /* Machine variant if we know it. This field was invented at Cygnus, 199 but it is hoped that other vendors will adopt it. If some standard 200 is developed, this code should be changed to follow it. */ 201 202 #define EF_MIPS_MACH 0x00FF0000 203 204 /* Cygnus is choosing values between 80 and 9F; 205 00 - 7F should be left for a future standard; 206 the rest are open. */ 207 208 #define E_MIPS_MACH_3900 0x00810000 209 #define E_MIPS_MACH_4010 0x00820000 210 #define E_MIPS_MACH_4100 0x00830000 211 #define E_MIPS_MACH_4650 0x00850000 212 #define E_MIPS_MACH_4120 0x00870000 213 #define E_MIPS_MACH_4111 0x00880000 214 #define E_MIPS_MACH_SB1 0x008a0000 215 #define E_MIPS_MACH_5400 0x00910000 216 #define E_MIPS_MACH_5500 0x00980000 217 #define E_MIPS_MACH_9000 0x00990000 218 219 /* Processor specific section indices. These sections do not actually 220 exist. Symbols with a st_shndx field corresponding to one of these 221 values have a special meaning. */ 222 223 /* Defined and allocated common symbol. Value is virtual address. If 224 relocated, alignment must be preserved. */ 225 #define SHN_MIPS_ACOMMON 0xff00 226 227 /* Defined and allocated text symbol. Value is virtual address. 228 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 229 #define SHN_MIPS_TEXT 0xff01 230 231 /* Defined and allocated data symbol. Value is virtual address. 232 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 233 #define SHN_MIPS_DATA 0xff02 234 235 /* Small common symbol. */ 236 #define SHN_MIPS_SCOMMON 0xff03 237 238 /* Small undefined symbol. */ 239 #define SHN_MIPS_SUNDEFINED 0xff04 240 241 /* Processor specific section types. */ 242 243 /* Section contains the set of dynamic shared objects used when 244 statically linking. */ 245 #define SHT_MIPS_LIBLIST 0x70000000 246 247 /* I'm not sure what this is, but it's used on Irix 5. */ 248 #define SHT_MIPS_MSYM 0x70000001 249 250 /* Section contains list of symbols whose definitions conflict with 251 symbols defined in shared objects. */ 252 #define SHT_MIPS_CONFLICT 0x70000002 253 254 /* Section contains the global pointer table. */ 255 #define SHT_MIPS_GPTAB 0x70000003 256 257 /* Section contains microcode information. The exact format is 258 unspecified. */ 259 #define SHT_MIPS_UCODE 0x70000004 260 261 /* Section contains some sort of debugging information. The exact 262 format is unspecified. It's probably ECOFF symbols. */ 263 #define SHT_MIPS_DEBUG 0x70000005 264 265 /* Section contains register usage information. */ 266 #define SHT_MIPS_REGINFO 0x70000006 267 268 /* ??? */ 269 #define SHT_MIPS_PACKAGE 0x70000007 270 271 /* ??? */ 272 #define SHT_MIPS_PACKSYM 0x70000008 273 274 /* ??? */ 275 #define SHT_MIPS_RELD 0x70000009 276 277 /* Section contains interface information. */ 278 #define SHT_MIPS_IFACE 0x7000000b 279 280 /* Section contains description of contents of another section. */ 281 #define SHT_MIPS_CONTENT 0x7000000c 282 283 /* Section contains miscellaneous options. */ 284 #define SHT_MIPS_OPTIONS 0x7000000d 285 286 /* ??? */ 287 #define SHT_MIPS_SHDR 0x70000010 288 289 /* ??? */ 290 #define SHT_MIPS_FDESC 0x70000011 291 292 /* ??? */ 293 #define SHT_MIPS_EXTSYM 0x70000012 294 295 /* ??? */ 296 #define SHT_MIPS_DENSE 0x70000013 297 298 /* ??? */ 299 #define SHT_MIPS_PDESC 0x70000014 300 301 /* ??? */ 302 #define SHT_MIPS_LOCSYM 0x70000015 303 304 /* ??? */ 305 #define SHT_MIPS_AUXSYM 0x70000016 306 307 /* ??? */ 308 #define SHT_MIPS_OPTSYM 0x70000017 309 310 /* ??? */ 311 #define SHT_MIPS_LOCSTR 0x70000018 312 313 /* ??? */ 314 #define SHT_MIPS_LINE 0x70000019 315 316 /* ??? */ 317 #define SHT_MIPS_RFDESC 0x7000001a 318 319 /* Delta C++: symbol table */ 320 #define SHT_MIPS_DELTASYM 0x7000001b 321 322 /* Delta C++: instance table */ 323 #define SHT_MIPS_DELTAINST 0x7000001c 324 325 /* Delta C++: class table */ 326 #define SHT_MIPS_DELTACLASS 0x7000001d 327 328 /* DWARF debugging section. */ 329 #define SHT_MIPS_DWARF 0x7000001e 330 331 /* Delta C++: declarations */ 332 #define SHT_MIPS_DELTADECL 0x7000001f 333 334 /* List of libraries the binary depends on. Includes a time stamp, version 335 number. */ 336 #define SHT_MIPS_SYMBOL_LIB 0x70000020 337 338 /* Events section. */ 339 #define SHT_MIPS_EVENTS 0x70000021 340 341 /* ??? */ 342 #define SHT_MIPS_TRANSLATE 0x70000022 343 344 /* Special pixie sections */ 345 #define SHT_MIPS_PIXIE 0x70000023 346 347 /* Address translation table (for debug info) */ 348 #define SHT_MIPS_XLATE 0x70000024 349 350 /* SGI internal address translation table (for debug info) */ 351 #define SHT_MIPS_XLATE_DEBUG 0x70000025 352 353 /* Intermediate code */ 354 #define SHT_MIPS_WHIRL 0x70000026 355 356 /* C++ exception handling region info */ 357 #define SHT_MIPS_EH_REGION 0x70000027 358 359 /* Obsolete address translation table (for debug info) */ 360 #define SHT_MIPS_XLATE_OLD 0x70000028 361 362 /* Runtime procedure descriptor table exception information (ucode) ??? */ 363 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 364 365 366 /* A section of type SHT_MIPS_LIBLIST contains an array of the 367 following structure. The sh_link field is the section index of the 368 string table. The sh_info field is the number of entries in the 369 section. */ 370 typedef struct 371 { 372 /* String table index for name of shared object. */ 373 unsigned long l_name; 374 /* Time stamp. */ 375 unsigned long l_time_stamp; 376 /* Checksum of symbol names and common sizes. */ 377 unsigned long l_checksum; 378 /* String table index for version. */ 379 unsigned long l_version; 380 /* Flags. */ 381 unsigned long l_flags; 382 } Elf32_Lib; 383 384 /* The external version of Elf32_Lib. */ 385 typedef struct 386 { 387 unsigned char l_name[4]; 388 unsigned char l_time_stamp[4]; 389 unsigned char l_checksum[4]; 390 unsigned char l_version[4]; 391 unsigned char l_flags[4]; 392 } Elf32_External_Lib; 393 394 /* The l_flags field of an Elf32_Lib structure may contain the 395 following flags. */ 396 397 /* Require an exact match at runtime. */ 398 #define LL_EXACT_MATCH 0x00000001 399 400 /* Ignore version incompatibilities at runtime. */ 401 #define LL_IGNORE_INT_VER 0x00000002 402 403 /* Require matching minor version number. */ 404 #define LL_REQUIRE_MINOR 0x00000004 405 406 /* ??? */ 407 #define LL_EXPORTS 0x00000008 408 409 /* Delay loading of this library until really needed. */ 410 #define LL_DELAY_LOAD 0x00000010 411 412 /* ??? Delta C++ stuff ??? */ 413 #define LL_DELTA 0x00000020 414 415 416 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 417 .dynsym section. Each element has the following type. */ 418 typedef unsigned long Elf32_Conflict; 419 typedef unsigned char Elf32_External_Conflict[4]; 420 421 typedef unsigned long Elf64_Conflict; 422 typedef unsigned char Elf64_External_Conflict[8]; 423 424 /* A section of type SHT_MIPS_GPTAB contains information about how 425 much GP space would be required for different -G arguments. This 426 information is only used so that the linker can provide informative 427 suggestions as to the best -G value to use. The sh_info field is 428 the index of the section for which this information applies. The 429 contents of the section are an array of the following union. The 430 first element uses the gt_header field. The remaining elements use 431 the gt_entry field. */ 432 typedef union 433 { 434 struct 435 { 436 /* -G value actually used for this object file. */ 437 unsigned long gt_current_g_value; 438 /* Unused. */ 439 unsigned long gt_unused; 440 } gt_header; 441 struct 442 { 443 /* If this -G argument has been used... */ 444 unsigned long gt_g_value; 445 /* ...this many GP section bytes would be required. */ 446 unsigned long gt_bytes; 447 } gt_entry; 448 } Elf32_gptab; 449 450 /* The external version of Elf32_gptab. */ 451 452 typedef union 453 { 454 struct 455 { 456 unsigned char gt_current_g_value[4]; 457 unsigned char gt_unused[4]; 458 } gt_header; 459 struct 460 { 461 unsigned char gt_g_value[4]; 462 unsigned char gt_bytes[4]; 463 } gt_entry; 464 } Elf32_External_gptab; 465 466 /* A section of type SHT_MIPS_REGINFO contains the following 467 structure. */ 468 typedef struct 469 { 470 /* Mask of general purpose registers used. */ 471 unsigned long ri_gprmask; 472 /* Mask of co-processor registers used. */ 473 unsigned long ri_cprmask[4]; 474 /* GP register value for this object file. */ 475 long ri_gp_value; 476 } Elf32_RegInfo; 477 478 /* The external version of the Elf_RegInfo structure. */ 479 typedef struct 480 { 481 unsigned char ri_gprmask[4]; 482 unsigned char ri_cprmask[4][4]; 483 unsigned char ri_gp_value[4]; 484 } Elf32_External_RegInfo; 485 486 /* MIPS ELF .reginfo swapping routines. */ 487 extern void bfd_mips_elf32_swap_reginfo_in 488 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 489 extern void bfd_mips_elf32_swap_reginfo_out 490 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 491 492 /* Processor specific section flags. */ 493 494 /* This section must be in the global data area. */ 495 #define SHF_MIPS_GPREL 0x10000000 496 497 /* This section should be merged. */ 498 #define SHF_MIPS_MERGE 0x20000000 499 500 /* This section contains address data of size implied by section 501 element size. */ 502 #define SHF_MIPS_ADDR 0x40000000 503 504 /* This section contains string data. */ 505 #define SHF_MIPS_STRING 0x80000000 506 507 /* This section may not be stripped. */ 508 #define SHF_MIPS_NOSTRIP 0x08000000 509 510 /* This section is local to threads. */ 511 #define SHF_MIPS_LOCAL 0x04000000 512 513 /* Linker should generate implicit weak names for this section. */ 514 #define SHF_MIPS_NAMES 0x02000000 515 516 /* Section contais text/data which may be replicated in other sections. 517 Linker should retain only one copy. */ 518 #define SHF_MIPS_NODUPES 0x01000000 519 520 /* Processor specific program header types. */ 521 522 /* Register usage information. Identifies one .reginfo section. */ 523 #define PT_MIPS_REGINFO 0x70000000 524 525 /* Runtime procedure table. */ 526 #define PT_MIPS_RTPROC 0x70000001 527 528 /* .MIPS.options section. */ 529 #define PT_MIPS_OPTIONS 0x70000002 530 531 /* Processor specific dynamic array tags. */ 532 533 /* 32 bit version number for runtime linker interface. */ 534 #define DT_MIPS_RLD_VERSION 0x70000001 535 536 /* Time stamp. */ 537 #define DT_MIPS_TIME_STAMP 0x70000002 538 539 /* Checksum of external strings and common sizes. */ 540 #define DT_MIPS_ICHECKSUM 0x70000003 541 542 /* Index of version string in string table. */ 543 #define DT_MIPS_IVERSION 0x70000004 544 545 /* 32 bits of flags. */ 546 #define DT_MIPS_FLAGS 0x70000005 547 548 /* Base address of the segment. */ 549 #define DT_MIPS_BASE_ADDRESS 0x70000006 550 551 /* ??? */ 552 #define DT_MIPS_MSYM 0x70000007 553 554 /* Address of .conflict section. */ 555 #define DT_MIPS_CONFLICT 0x70000008 556 557 /* Address of .liblist section. */ 558 #define DT_MIPS_LIBLIST 0x70000009 559 560 /* Number of local global offset table entries. */ 561 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 562 563 /* Number of entries in the .conflict section. */ 564 #define DT_MIPS_CONFLICTNO 0x7000000b 565 566 /* Number of entries in the .liblist section. */ 567 #define DT_MIPS_LIBLISTNO 0x70000010 568 569 /* Number of entries in the .dynsym section. */ 570 #define DT_MIPS_SYMTABNO 0x70000011 571 572 /* Index of first external dynamic symbol not referenced locally. */ 573 #define DT_MIPS_UNREFEXTNO 0x70000012 574 575 /* Index of first dynamic symbol in global offset table. */ 576 #define DT_MIPS_GOTSYM 0x70000013 577 578 /* Number of page table entries in global offset table. */ 579 #define DT_MIPS_HIPAGENO 0x70000014 580 581 /* Address of run time loader map, used for debugging. */ 582 #define DT_MIPS_RLD_MAP 0x70000016 583 584 /* Delta C++ class definition. */ 585 #define DT_MIPS_DELTA_CLASS 0x70000017 586 587 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 588 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 589 590 /* Delta C++ class instances. */ 591 #define DT_MIPS_DELTA_INSTANCE 0x70000019 592 593 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 594 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 595 596 /* Delta relocations. */ 597 #define DT_MIPS_DELTA_RELOC 0x7000001b 598 599 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 600 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 601 602 /* Delta symbols that Delta relocations refer to. */ 603 #define DT_MIPS_DELTA_SYM 0x7000001d 604 605 /* Number of entries in DT_MIPS_DELTA_SYM. */ 606 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 607 608 /* Delta symbols that hold class declarations. */ 609 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 610 611 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 612 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 613 614 /* Flags indicating information about C++ flavor. */ 615 #define DT_MIPS_CXX_FLAGS 0x70000022 616 617 /* Pixie information (???). */ 618 #define DT_MIPS_PIXIE_INIT 0x70000023 619 620 /* Address of .MIPS.symlib */ 621 #define DT_MIPS_SYMBOL_LIB 0x70000024 622 623 /* The GOT index of the first PTE for a segment */ 624 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 625 626 /* The GOT index of the first PTE for a local symbol */ 627 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 628 629 /* The GOT index of the first PTE for a hidden symbol */ 630 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 631 632 /* The GOT index of the first PTE for a protected symbol */ 633 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 634 635 /* Address of `.MIPS.options'. */ 636 #define DT_MIPS_OPTIONS 0x70000029 637 638 /* Address of `.interface'. */ 639 #define DT_MIPS_INTERFACE 0x7000002a 640 641 /* ??? */ 642 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 643 644 /* Size of the .interface section. */ 645 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 646 647 /* Size of rld_text_resolve function stored in the GOT. */ 648 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 649 650 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 651 #define DT_MIPS_PERF_SUFFIX 0x7000002e 652 653 /* Size of compact relocation section (O32). */ 654 #define DT_MIPS_COMPACT_SIZE 0x7000002f 655 656 /* GP value for auxiliary GOTs. */ 657 #define DT_MIPS_GP_VALUE 0x70000030 658 659 /* Address of auxiliary .dynamic. */ 660 #define DT_MIPS_AUX_DYNAMIC 0x70000031 661 662 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 663 664 /* No flags. */ 665 #define RHF_NONE 0x00000000 666 667 /* Uses shortcut pointers. */ 668 #define RHF_QUICKSTART 0x00000001 669 670 /* Hash size is not a power of two. */ 671 #define RHF_NOTPOT 0x00000002 672 673 /* Ignore LD_LIBRARY_PATH. */ 674 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 675 676 /* DSO address may not be relocated. */ 677 #define RHF_NO_MOVE 0x00000008 678 679 /* SGI specific features. */ 680 #define RHF_SGI_ONLY 0x00000010 681 682 /* Guarantee that .init will finish executing before any non-init 683 code in DSO is called. */ 684 #define RHF_GUARANTEE_INIT 0x00000020 685 686 /* Contains Delta C++ code. */ 687 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 688 689 /* Guarantee that .init will start executing before any non-init 690 code in DSO is called. */ 691 #define RHF_GUARANTEE_START_INIT 0x00000080 692 693 /* Generated by pixie. */ 694 #define RHF_PIXIE 0x00000100 695 696 /* Delay-load DSO by default. */ 697 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 698 699 /* Object may be requickstarted */ 700 #define RHF_REQUICKSTART 0x00000400 701 702 /* Object has been requickstarted */ 703 #define RHF_REQUICKSTARTED 0x00000800 704 705 /* Generated by cord. */ 706 #define RHF_CORD 0x00001000 707 708 /* Object contains no unresolved undef symbols. */ 709 #define RHF_NO_UNRES_UNDEF 0x00002000 710 711 /* Symbol table is in a safe order. */ 712 #define RHF_RLD_ORDER_SAFE 0x00004000 713 714 /* Special values for the st_other field in the symbol table. These 715 are used in an Irix 5 dynamic symbol table. */ 716 717 #define STO_DEFAULT STV_DEFAULT 718 #define STO_INTERNAL STV_INTERNAL 719 #define STO_HIDDEN STV_HIDDEN 720 #define STO_PROTECTED STV_PROTECTED 721 722 /* This value is used for a mips16 .text symbol. */ 723 #define STO_MIPS16 0xf0 724 725 /* This bit is used on Irix to indicate a symbol whose definition 726 is optional - if, at final link time, it cannot be found, no 727 error message should be produced. */ 728 #define STO_OPTIONAL (1 << 2) 729 /* A macro to examine the STO_OPTIONAL bit. */ 730 #define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 731 732 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 733 relocation entry specifies up to three actual relocations, all at 734 the same address. The first relocation which required a symbol 735 uses the symbol in the r_sym field. The second relocation which 736 requires a symbol uses the symbol in the r_ssym field. If all 737 three relocations require a symbol, the third one uses a zero 738 value. */ 739 740 /* An entry in a 64 bit SHT_REL section. */ 741 742 typedef struct 743 { 744 /* Address of relocation. */ 745 unsigned char r_offset[8]; 746 /* Symbol index. */ 747 unsigned char r_sym[4]; 748 /* Special symbol. */ 749 unsigned char r_ssym[1]; 750 /* Third relocation. */ 751 unsigned char r_type3[1]; 752 /* Second relocation. */ 753 unsigned char r_type2[1]; 754 /* First relocation. */ 755 unsigned char r_type[1]; 756 } Elf64_Mips_External_Rel; 757 758 typedef struct 759 { 760 /* Address of relocation. */ 761 bfd_vma r_offset; 762 /* Symbol index. */ 763 unsigned long r_sym; 764 /* Special symbol. */ 765 unsigned char r_ssym; 766 /* Third relocation. */ 767 unsigned char r_type3; 768 /* Second relocation. */ 769 unsigned char r_type2; 770 /* First relocation. */ 771 unsigned char r_type; 772 } Elf64_Mips_Internal_Rel; 773 774 /* An entry in a 64 bit SHT_RELA section. */ 775 776 typedef struct 777 { 778 /* Address of relocation. */ 779 unsigned char r_offset[8]; 780 /* Symbol index. */ 781 unsigned char r_sym[4]; 782 /* Special symbol. */ 783 unsigned char r_ssym[1]; 784 /* Third relocation. */ 785 unsigned char r_type3[1]; 786 /* Second relocation. */ 787 unsigned char r_type2[1]; 788 /* First relocation. */ 789 unsigned char r_type[1]; 790 /* Addend. */ 791 unsigned char r_addend[8]; 792 } Elf64_Mips_External_Rela; 793 794 typedef struct 795 { 796 /* Address of relocation. */ 797 bfd_vma r_offset; 798 /* Symbol index. */ 799 unsigned long r_sym; 800 /* Special symbol. */ 801 unsigned char r_ssym; 802 /* Third relocation. */ 803 unsigned char r_type3; 804 /* Second relocation. */ 805 unsigned char r_type2; 806 /* First relocation. */ 807 unsigned char r_type; 808 /* Addend. */ 809 bfd_signed_vma r_addend; 810 } Elf64_Mips_Internal_Rela; 811 812 /* MIPS ELF 64 relocation info access macros. */ 813 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 814 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 815 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 816 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 817 818 /* Values found in the r_ssym field of a relocation entry. */ 819 820 /* No relocation. */ 821 #define RSS_UNDEF 0 822 823 /* Value of GP. */ 824 #define RSS_GP 1 825 826 /* Value of GP in object being relocated. */ 827 #define RSS_GP0 2 828 829 /* Address of location being relocated. */ 830 #define RSS_LOC 3 831 832 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 833 which starts with this header. */ 834 835 typedef struct 836 { 837 /* Type of option. */ 838 unsigned char kind[1]; 839 /* Size of option descriptor, including header. */ 840 unsigned char size[1]; 841 /* Section index of affected section, or 0 for global option. */ 842 unsigned char section[2]; 843 /* Information specific to this kind of option. */ 844 unsigned char info[4]; 845 } Elf_External_Options; 846 847 typedef struct 848 { 849 /* Type of option. */ 850 unsigned char kind; 851 /* Size of option descriptor, including header. */ 852 unsigned char size; 853 /* Section index of affected section, or 0 for global option. */ 854 unsigned short section; 855 /* Information specific to this kind of option. */ 856 unsigned long info; 857 } Elf_Internal_Options; 858 859 /* MIPS ELF option header swapping routines. */ 860 extern void bfd_mips_elf_swap_options_in 861 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 862 extern void bfd_mips_elf_swap_options_out 863 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 864 865 /* Values which may appear in the kind field of an Elf_Options 866 structure. */ 867 868 /* Undefined. */ 869 #define ODK_NULL 0 870 871 /* Register usage and GP value. */ 872 #define ODK_REGINFO 1 873 874 /* Exception processing information. */ 875 #define ODK_EXCEPTIONS 2 876 877 /* Section padding information. */ 878 #define ODK_PAD 3 879 880 /* Hardware workarounds performed. */ 881 #define ODK_HWPATCH 4 882 883 /* Fill value used by the linker. */ 884 #define ODK_FILL 5 885 886 /* Reserved space for desktop tools. */ 887 #define ODK_TAGS 6 888 889 /* Hardware workarounds, AND bits when merging. */ 890 #define ODK_HWAND 7 891 892 /* Hardware workarounds, OR bits when merging. */ 893 #define ODK_HWOR 8 894 895 /* GP group to use for text/data sections. */ 896 #define ODK_GP_GROUP 9 897 898 /* ID information. */ 899 #define ODK_IDENT 10 900 901 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 902 structure. In the 64 bit ABI, it is the following structure. The 903 info field of the options header is not used. */ 904 905 typedef struct 906 { 907 /* Mask of general purpose registers used. */ 908 unsigned char ri_gprmask[4]; 909 /* Padding. */ 910 unsigned char ri_pad[4]; 911 /* Mask of co-processor registers used. */ 912 unsigned char ri_cprmask[4][4]; 913 /* GP register value for this object file. */ 914 unsigned char ri_gp_value[8]; 915 } Elf64_External_RegInfo; 916 917 typedef struct 918 { 919 /* Mask of general purpose registers used. */ 920 unsigned long ri_gprmask; 921 /* Padding. */ 922 unsigned long ri_pad; 923 /* Mask of co-processor registers used. */ 924 unsigned long ri_cprmask[4]; 925 /* GP register value for this object file. */ 926 bfd_vma ri_gp_value; 927 } Elf64_Internal_RegInfo; 928 929 typedef struct 930 { 931 /* The hash value computed from the name of the corresponding 932 dynamic symbol. */ 933 unsigned char ms_hash_value[4]; 934 /* Contains both the dynamic relocation index and the symbol flags 935 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 936 to access the individual values. The dynamic relocation index 937 identifies the first entry in the .rel.dyn section that 938 references the dynamic symbol corresponding to this msym entry. 939 If the index is 0, no dynamic relocations are associated with the 940 symbol. The symbol flags field is reserved for future use. */ 941 unsigned char ms_info[4]; 942 } Elf32_External_Msym; 943 944 typedef struct 945 { 946 /* The hash value computed from the name of the corresponding 947 dynamic symbol. */ 948 unsigned long ms_hash_value; 949 /* Contains both the dynamic relocation index and the symbol flags 950 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 951 to access the individual values. The dynamic relocation index 952 identifies the first entry in the .rel.dyn section that 953 references the dynamic symbol corresponding to this msym entry. 954 If the index is 0, no dynamic relocations are associated with the 955 symbol. The symbol flags field is reserved for future use. */ 956 unsigned long ms_info; 957 } Elf32_Internal_Msym; 958 959 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 960 #define ELF32_MS_FLAGS(i) (i) & 0xff) 961 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 962 963 /* MIPS ELF reginfo swapping routines. */ 964 extern void bfd_mips_elf64_swap_reginfo_in 965 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 966 extern void bfd_mips_elf64_swap_reginfo_out 967 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 968 969 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 970 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 971 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 972 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 973 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 974 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 975 exceptions (debug mode). */ 976 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 977 978 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 979 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 980 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 981 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 982 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 983 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 984 985 /* Masks for the info word of an ODK_PAD descriptor. */ 986 #define OPAD_PREFIX 0x01 987 #define OPAD_POSTFIX 0x02 988 #define OPAD_SYMBOL 0x04 989 990 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 991 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 992 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 993 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 994 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 995 (clean == 1). */ 996 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 997 load patch. */ 998 999 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1000 #define OGP_GROUP 0x0000ffff /* GP group number. */ 1001 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1002 1003 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1004 #define OHWA0_R4KEOP_CHECKED 0x00000001 1005 #define OHWA0_R4KEOP_CLEAN 0x00000002 1006 1007 1008 #endif /* _ELF_MIPS_H */ 1009