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