1 /* MIPS ELF support for BFD. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 3 Free Software Foundation, Inc. 4 5 By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from 6 information in the System V Application Binary Interface, MIPS 7 Processor Supplement. 8 9 This file is part of BFD, the Binary File Descriptor library. 10 11 This program is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 2 of the License, or 14 (at your option) any later version. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software 23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 24 25 /* This file holds definitions specific to the MIPS ELF ABI. Note 26 that most of this is not actually implemented by BFD. */ 27 28 #ifndef _ELF_MIPS_H 29 #define _ELF_MIPS_H 30 31 #include "elf/reloc-macros.h" 32 33 /* Relocation types. */ 34 START_RELOC_NUMBERS (elf_mips_reloc_type) 35 RELOC_NUMBER (R_MIPS_NONE, 0) 36 RELOC_NUMBER (R_MIPS_16, 1) 37 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */ 38 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */ 39 RELOC_NUMBER (R_MIPS_26, 4) 40 RELOC_NUMBER (R_MIPS_HI16, 5) 41 RELOC_NUMBER (R_MIPS_LO16, 6) 42 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */ 43 RELOC_NUMBER (R_MIPS_LITERAL, 8) 44 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */ 45 RELOC_NUMBER (R_MIPS_PC16, 10) 46 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */ 47 RELOC_NUMBER (R_MIPS_GPREL32, 12) 48 /* The remaining relocs are defined on Irix, although they are not 49 in the MIPS ELF ABI. */ 50 RELOC_NUMBER (R_MIPS_UNUSED1, 13) 51 RELOC_NUMBER (R_MIPS_UNUSED2, 14) 52 RELOC_NUMBER (R_MIPS_UNUSED3, 15) 53 RELOC_NUMBER (R_MIPS_SHIFT5, 16) 54 RELOC_NUMBER (R_MIPS_SHIFT6, 17) 55 RELOC_NUMBER (R_MIPS_64, 18) 56 RELOC_NUMBER (R_MIPS_GOT_DISP, 19) 57 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) 58 RELOC_NUMBER (R_MIPS_GOT_OFST, 21) 59 RELOC_NUMBER (R_MIPS_GOT_HI16, 22) 60 RELOC_NUMBER (R_MIPS_GOT_LO16, 23) 61 RELOC_NUMBER (R_MIPS_SUB, 24) 62 RELOC_NUMBER (R_MIPS_INSERT_A, 25) 63 RELOC_NUMBER (R_MIPS_INSERT_B, 26) 64 RELOC_NUMBER (R_MIPS_DELETE, 27) 65 RELOC_NUMBER (R_MIPS_HIGHER, 28) 66 RELOC_NUMBER (R_MIPS_HIGHEST, 29) 67 RELOC_NUMBER (R_MIPS_CALL_HI16, 30) 68 RELOC_NUMBER (R_MIPS_CALL_LO16, 31) 69 RELOC_NUMBER (R_MIPS_SCN_DISP, 32) 70 RELOC_NUMBER (R_MIPS_REL16, 33) 71 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) 72 RELOC_NUMBER (R_MIPS_PJUMP, 35) 73 RELOC_NUMBER (R_MIPS_RELGOT, 36) 74 RELOC_NUMBER (R_MIPS_JALR, 37) 75 RELOC_NUMBER (R_MIPS_max, 38) 76 /* These relocs are used for the mips16. */ 77 RELOC_NUMBER (R_MIPS16_26, 100) 78 RELOC_NUMBER (R_MIPS16_GPREL, 101) 79 /* These are GNU extensions to handle embedded-pic. */ 80 RELOC_NUMBER (R_MIPS_PC32, 248) 81 RELOC_NUMBER (R_MIPS_PC64, 249) 82 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 83 RELOC_NUMBER (R_MIPS_GNU_REL_LO16, 251) 84 RELOC_NUMBER (R_MIPS_GNU_REL_HI16, 252) 85 /* These are GNU extensions to enable C++ vtable garbage collection. */ 86 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 87 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 88 END_RELOC_NUMBERS (R_MIPS_maxext) 89 90 /* Processor specific flags for the ELF header e_flags field. */ 91 92 /* At least one .noreorder directive appears in the source. */ 93 #define EF_MIPS_NOREORDER 0x00000001 94 95 /* File contains position independent code. */ 96 #define EF_MIPS_PIC 0x00000002 97 98 /* Code in file uses the standard calling sequence for calling 99 position independent code. */ 100 #define EF_MIPS_CPIC 0x00000004 101 102 /* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */ 103 #define EF_MIPS_XGOT 0x00000008 104 105 /* Code in file uses UCODE (obsolete) */ 106 #define EF_MIPS_UCODE 0x00000010 107 108 /* Code in file uses new ABI (-n32 on Irix 6). */ 109 #define EF_MIPS_ABI2 0x00000020 110 111 /* Process the .MIPS.options section first by ld */ 112 #define EF_MIPS_OPTIONS_FIRST 0x00000080 113 114 /* Architectural Extensions used by this file */ 115 #define EF_MIPS_ARCH_ASE 0x0f000000 116 117 /* Use MDMX multimedia extensions */ 118 #define EF_MIPS_ARCH_ASE_MDMX 0x08000000 119 120 /* Use MIPS-16 ISA extensions */ 121 #define EF_MIPS_ARCH_ASE_M16 0x04000000 122 123 /* Indicates code compiled for a 64-bit machine in 32-bit mode. 124 (regs are 32-bits wide.) */ 125 #define EF_MIPS_32BITMODE 0x00000100 126 127 /* Four bit MIPS architecture field. */ 128 #define EF_MIPS_ARCH 0xf0000000 129 130 /* -mips1 code. */ 131 #define E_MIPS_ARCH_1 0x00000000 132 133 /* -mips2 code. */ 134 #define E_MIPS_ARCH_2 0x10000000 135 136 /* -mips3 code. */ 137 #define E_MIPS_ARCH_3 0x20000000 138 139 /* -mips4 code. */ 140 #define E_MIPS_ARCH_4 0x30000000 141 142 /* -mips5 code. */ 143 #define E_MIPS_ARCH_5 0x40000000 144 145 /* -mips32 code. */ 146 #define E_MIPS_ARCH_32 0x50000000 147 148 /* -mips64 code. */ 149 #define E_MIPS_ARCH_64 0x60000000 150 151 /* -mips32r2 code. */ 152 #define E_MIPS_ARCH_32R2 0x70000000 153 154 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 155 #define EF_MIPS_ABI 0x0000F000 156 157 /* The original o32 abi. */ 158 #define E_MIPS_ABI_O32 0x00001000 159 160 /* O32 extended to work on 64 bit architectures */ 161 #define E_MIPS_ABI_O64 0x00002000 162 163 /* EABI in 32 bit mode */ 164 #define E_MIPS_ABI_EABI32 0x00003000 165 166 /* EABI in 64 bit mode */ 167 #define E_MIPS_ABI_EABI64 0x00004000 168 169 170 /* Machine variant if we know it. This field was invented at Cygnus, 171 but it is hoped that other vendors will adopt it. If some standard 172 is developed, this code should be changed to follow it. */ 173 174 #define EF_MIPS_MACH 0x00FF0000 175 176 /* Cygnus is choosing values between 80 and 9F; 177 00 - 7F should be left for a future standard; 178 the rest are open. */ 179 180 #define E_MIPS_MACH_3900 0x00810000 181 #define E_MIPS_MACH_4010 0x00820000 182 #define E_MIPS_MACH_4100 0x00830000 183 #define E_MIPS_MACH_4650 0x00850000 184 #define E_MIPS_MACH_4120 0x00870000 185 #define E_MIPS_MACH_4111 0x00880000 186 #define E_MIPS_MACH_SB1 0x008a0000 187 #define E_MIPS_MACH_5400 0x00910000 188 #define E_MIPS_MACH_5500 0x00980000 189 190 /* Processor specific section indices. These sections do not actually 191 exist. Symbols with a st_shndx field corresponding to one of these 192 values have a special meaning. */ 193 194 /* Defined and allocated common symbol. Value is virtual address. If 195 relocated, alignment must be preserved. */ 196 #define SHN_MIPS_ACOMMON 0xff00 197 198 /* Defined and allocated text symbol. Value is virtual address. 199 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 200 #define SHN_MIPS_TEXT 0xff01 201 202 /* Defined and allocated data symbol. Value is virtual address. 203 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 204 #define SHN_MIPS_DATA 0xff02 205 206 /* Small common symbol. */ 207 #define SHN_MIPS_SCOMMON 0xff03 208 209 /* Small undefined symbol. */ 210 #define SHN_MIPS_SUNDEFINED 0xff04 211 212 /* Processor specific section types. */ 213 214 /* Section contains the set of dynamic shared objects used when 215 statically linking. */ 216 #define SHT_MIPS_LIBLIST 0x70000000 217 218 /* I'm not sure what this is, but it's used on Irix 5. */ 219 #define SHT_MIPS_MSYM 0x70000001 220 221 /* Section contains list of symbols whose definitions conflict with 222 symbols defined in shared objects. */ 223 #define SHT_MIPS_CONFLICT 0x70000002 224 225 /* Section contains the global pointer table. */ 226 #define SHT_MIPS_GPTAB 0x70000003 227 228 /* Section contains microcode information. The exact format is 229 unspecified. */ 230 #define SHT_MIPS_UCODE 0x70000004 231 232 /* Section contains some sort of debugging information. The exact 233 format is unspecified. It's probably ECOFF symbols. */ 234 #define SHT_MIPS_DEBUG 0x70000005 235 236 /* Section contains register usage information. */ 237 #define SHT_MIPS_REGINFO 0x70000006 238 239 /* ??? */ 240 #define SHT_MIPS_PACKAGE 0x70000007 241 242 /* ??? */ 243 #define SHT_MIPS_PACKSYM 0x70000008 244 245 /* ??? */ 246 #define SHT_MIPS_RELD 0x70000009 247 248 /* Section contains interface information. */ 249 #define SHT_MIPS_IFACE 0x7000000b 250 251 /* Section contains description of contents of another section. */ 252 #define SHT_MIPS_CONTENT 0x7000000c 253 254 /* Section contains miscellaneous options. */ 255 #define SHT_MIPS_OPTIONS 0x7000000d 256 257 /* ??? */ 258 #define SHT_MIPS_SHDR 0x70000010 259 260 /* ??? */ 261 #define SHT_MIPS_FDESC 0x70000011 262 263 /* ??? */ 264 #define SHT_MIPS_EXTSYM 0x70000012 265 266 /* ??? */ 267 #define SHT_MIPS_DENSE 0x70000013 268 269 /* ??? */ 270 #define SHT_MIPS_PDESC 0x70000014 271 272 /* ??? */ 273 #define SHT_MIPS_LOCSYM 0x70000015 274 275 /* ??? */ 276 #define SHT_MIPS_AUXSYM 0x70000016 277 278 /* ??? */ 279 #define SHT_MIPS_OPTSYM 0x70000017 280 281 /* ??? */ 282 #define SHT_MIPS_LOCSTR 0x70000018 283 284 /* ??? */ 285 #define SHT_MIPS_LINE 0x70000019 286 287 /* ??? */ 288 #define SHT_MIPS_RFDESC 0x7000001a 289 290 /* Delta C++: symbol table */ 291 #define SHT_MIPS_DELTASYM 0x7000001b 292 293 /* Delta C++: instance table */ 294 #define SHT_MIPS_DELTAINST 0x7000001c 295 296 /* Delta C++: class table */ 297 #define SHT_MIPS_DELTACLASS 0x7000001d 298 299 /* DWARF debugging section. */ 300 #define SHT_MIPS_DWARF 0x7000001e 301 302 /* Delta C++: declarations */ 303 #define SHT_MIPS_DELTADECL 0x7000001f 304 305 /* List of libraries the binary depends on. Includes a time stamp, version 306 number. */ 307 #define SHT_MIPS_SYMBOL_LIB 0x70000020 308 309 /* Events section. */ 310 #define SHT_MIPS_EVENTS 0x70000021 311 312 /* ??? */ 313 #define SHT_MIPS_TRANSLATE 0x70000022 314 315 /* Special pixie sections */ 316 #define SHT_MIPS_PIXIE 0x70000023 317 318 /* Address translation table (for debug info) */ 319 #define SHT_MIPS_XLATE 0x70000024 320 321 /* SGI internal address translation table (for debug info) */ 322 #define SHT_MIPS_XLATE_DEBUG 0x70000025 323 324 /* Intermediate code */ 325 #define SHT_MIPS_WHIRL 0x70000026 326 327 /* C++ exception handling region info */ 328 #define SHT_MIPS_EH_REGION 0x70000027 329 330 /* Obsolete address translation table (for debug info) */ 331 #define SHT_MIPS_XLATE_OLD 0x70000028 332 333 /* Runtime procedure descriptor table exception information (ucode) ??? */ 334 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 335 336 337 /* A section of type SHT_MIPS_LIBLIST contains an array of the 338 following structure. The sh_link field is the section index of the 339 string table. The sh_info field is the number of entries in the 340 section. */ 341 typedef struct 342 { 343 /* String table index for name of shared object. */ 344 unsigned long l_name; 345 /* Time stamp. */ 346 unsigned long l_time_stamp; 347 /* Checksum of symbol names and common sizes. */ 348 unsigned long l_checksum; 349 /* String table index for version. */ 350 unsigned long l_version; 351 /* Flags. */ 352 unsigned long l_flags; 353 } Elf32_Lib; 354 355 /* The external version of Elf32_Lib. */ 356 typedef struct 357 { 358 unsigned char l_name[4]; 359 unsigned char l_time_stamp[4]; 360 unsigned char l_checksum[4]; 361 unsigned char l_version[4]; 362 unsigned char l_flags[4]; 363 } Elf32_External_Lib; 364 365 /* The l_flags field of an Elf32_Lib structure may contain the 366 following flags. */ 367 368 /* Require an exact match at runtime. */ 369 #define LL_EXACT_MATCH 0x00000001 370 371 /* Ignore version incompatibilities at runtime. */ 372 #define LL_IGNORE_INT_VER 0x00000002 373 374 /* Require matching minor version number. */ 375 #define LL_REQUIRE_MINOR 0x00000004 376 377 /* ??? */ 378 #define LL_EXPORTS 0x00000008 379 380 /* Delay loading of this library until really needed. */ 381 #define LL_DELAY_LOAD 0x00000010 382 383 /* ??? Delta C++ stuff ??? */ 384 #define LL_DELTA 0x00000020 385 386 387 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 388 .dynsym section. Each element has the following type. */ 389 typedef unsigned long Elf32_Conflict; 390 typedef unsigned char Elf32_External_Conflict[4]; 391 392 typedef unsigned long Elf64_Conflict; 393 typedef unsigned char Elf64_External_Conflict[8]; 394 395 /* A section of type SHT_MIPS_GPTAB contains information about how 396 much GP space would be required for different -G arguments. This 397 information is only used so that the linker can provide informative 398 suggestions as to the best -G value to use. The sh_info field is 399 the index of the section for which this information applies. The 400 contents of the section are an array of the following union. The 401 first element uses the gt_header field. The remaining elements use 402 the gt_entry field. */ 403 typedef union 404 { 405 struct 406 { 407 /* -G value actually used for this object file. */ 408 unsigned long gt_current_g_value; 409 /* Unused. */ 410 unsigned long gt_unused; 411 } gt_header; 412 struct 413 { 414 /* If this -G argument has been used... */ 415 unsigned long gt_g_value; 416 /* ...this many GP section bytes would be required. */ 417 unsigned long gt_bytes; 418 } gt_entry; 419 } Elf32_gptab; 420 421 /* The external version of Elf32_gptab. */ 422 423 typedef union 424 { 425 struct 426 { 427 unsigned char gt_current_g_value[4]; 428 unsigned char gt_unused[4]; 429 } gt_header; 430 struct 431 { 432 unsigned char gt_g_value[4]; 433 unsigned char gt_bytes[4]; 434 } gt_entry; 435 } Elf32_External_gptab; 436 437 /* A section of type SHT_MIPS_REGINFO contains the following 438 structure. */ 439 typedef struct 440 { 441 /* Mask of general purpose registers used. */ 442 unsigned long ri_gprmask; 443 /* Mask of co-processor registers used. */ 444 unsigned long ri_cprmask[4]; 445 /* GP register value for this object file. */ 446 long ri_gp_value; 447 } Elf32_RegInfo; 448 449 /* The external version of the Elf_RegInfo structure. */ 450 typedef struct 451 { 452 unsigned char ri_gprmask[4]; 453 unsigned char ri_cprmask[4][4]; 454 unsigned char ri_gp_value[4]; 455 } Elf32_External_RegInfo; 456 457 /* MIPS ELF .reginfo swapping routines. */ 458 extern void bfd_mips_elf32_swap_reginfo_in 459 PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *)); 460 extern void bfd_mips_elf32_swap_reginfo_out 461 PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *)); 462 463 /* Processor specific section flags. */ 464 465 /* This section must be in the global data area. */ 466 #define SHF_MIPS_GPREL 0x10000000 467 468 /* This section should be merged. */ 469 #define SHF_MIPS_MERGE 0x20000000 470 471 /* This section contains address data of size implied by section 472 element size. */ 473 #define SHF_MIPS_ADDR 0x40000000 474 475 /* This section contains string data. */ 476 #define SHF_MIPS_STRING 0x80000000 477 478 /* This section may not be stripped. */ 479 #define SHF_MIPS_NOSTRIP 0x08000000 480 481 /* This section is local to threads. */ 482 #define SHF_MIPS_LOCAL 0x04000000 483 484 /* Linker should generate implicit weak names for this section. */ 485 #define SHF_MIPS_NAMES 0x02000000 486 487 /* Section contais text/data which may be replicated in other sections. 488 Linker should retain only one copy. */ 489 #define SHF_MIPS_NODUPES 0x01000000 490 491 /* Processor specific program header types. */ 492 493 /* Register usage information. Identifies one .reginfo section. */ 494 #define PT_MIPS_REGINFO 0x70000000 495 496 /* Runtime procedure table. */ 497 #define PT_MIPS_RTPROC 0x70000001 498 499 /* .MIPS.options section. */ 500 #define PT_MIPS_OPTIONS 0x70000002 501 502 /* Processor specific dynamic array tags. */ 503 504 /* 32 bit version number for runtime linker interface. */ 505 #define DT_MIPS_RLD_VERSION 0x70000001 506 507 /* Time stamp. */ 508 #define DT_MIPS_TIME_STAMP 0x70000002 509 510 /* Checksum of external strings and common sizes. */ 511 #define DT_MIPS_ICHECKSUM 0x70000003 512 513 /* Index of version string in string table. */ 514 #define DT_MIPS_IVERSION 0x70000004 515 516 /* 32 bits of flags. */ 517 #define DT_MIPS_FLAGS 0x70000005 518 519 /* Base address of the segment. */ 520 #define DT_MIPS_BASE_ADDRESS 0x70000006 521 522 /* ??? */ 523 #define DT_MIPS_MSYM 0x70000007 524 525 /* Address of .conflict section. */ 526 #define DT_MIPS_CONFLICT 0x70000008 527 528 /* Address of .liblist section. */ 529 #define DT_MIPS_LIBLIST 0x70000009 530 531 /* Number of local global offset table entries. */ 532 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 533 534 /* Number of entries in the .conflict section. */ 535 #define DT_MIPS_CONFLICTNO 0x7000000b 536 537 /* Number of entries in the .liblist section. */ 538 #define DT_MIPS_LIBLISTNO 0x70000010 539 540 /* Number of entries in the .dynsym section. */ 541 #define DT_MIPS_SYMTABNO 0x70000011 542 543 /* Index of first external dynamic symbol not referenced locally. */ 544 #define DT_MIPS_UNREFEXTNO 0x70000012 545 546 /* Index of first dynamic symbol in global offset table. */ 547 #define DT_MIPS_GOTSYM 0x70000013 548 549 /* Number of page table entries in global offset table. */ 550 #define DT_MIPS_HIPAGENO 0x70000014 551 552 /* Address of run time loader map, used for debugging. */ 553 #define DT_MIPS_RLD_MAP 0x70000016 554 555 /* Delta C++ class definition. */ 556 #define DT_MIPS_DELTA_CLASS 0x70000017 557 558 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 559 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 560 561 /* Delta C++ class instances. */ 562 #define DT_MIPS_DELTA_INSTANCE 0x70000019 563 564 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 565 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 566 567 /* Delta relocations. */ 568 #define DT_MIPS_DELTA_RELOC 0x7000001b 569 570 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 571 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 572 573 /* Delta symbols that Delta relocations refer to. */ 574 #define DT_MIPS_DELTA_SYM 0x7000001d 575 576 /* Number of entries in DT_MIPS_DELTA_SYM. */ 577 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 578 579 /* Delta symbols that hold class declarations. */ 580 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 581 582 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 583 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 584 585 /* Flags indicating information about C++ flavor. */ 586 #define DT_MIPS_CXX_FLAGS 0x70000022 587 588 /* Pixie information (???). */ 589 #define DT_MIPS_PIXIE_INIT 0x70000023 590 591 /* Address of .MIPS.symlib */ 592 #define DT_MIPS_SYMBOL_LIB 0x70000024 593 594 /* The GOT index of the first PTE for a segment */ 595 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 596 597 /* The GOT index of the first PTE for a local symbol */ 598 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 599 600 /* The GOT index of the first PTE for a hidden symbol */ 601 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 602 603 /* The GOT index of the first PTE for a protected symbol */ 604 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 605 606 /* Address of `.MIPS.options'. */ 607 #define DT_MIPS_OPTIONS 0x70000029 608 609 /* Address of `.interface'. */ 610 #define DT_MIPS_INTERFACE 0x7000002a 611 612 /* ??? */ 613 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 614 615 /* Size of the .interface section. */ 616 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 617 618 /* Size of rld_text_resolve function stored in the GOT. */ 619 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 620 621 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 622 #define DT_MIPS_PERF_SUFFIX 0x7000002e 623 624 /* Size of compact relocation section (O32). */ 625 #define DT_MIPS_COMPACT_SIZE 0x7000002f 626 627 /* GP value for auxiliary GOTs. */ 628 #define DT_MIPS_GP_VALUE 0x70000030 629 630 /* Address of auxiliary .dynamic. */ 631 #define DT_MIPS_AUX_DYNAMIC 0x70000031 632 633 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 634 635 /* No flags. */ 636 #define RHF_NONE 0x00000000 637 638 /* Uses shortcut pointers. */ 639 #define RHF_QUICKSTART 0x00000001 640 641 /* Hash size is not a power of two. */ 642 #define RHF_NOTPOT 0x00000002 643 644 /* Ignore LD_LIBRARY_PATH. */ 645 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 646 647 /* DSO address may not be relocated. */ 648 #define RHF_NO_MOVE 0x00000008 649 650 /* SGI specific features. */ 651 #define RHF_SGI_ONLY 0x00000010 652 653 /* Guarantee that .init will finish executing before any non-init 654 code in DSO is called. */ 655 #define RHF_GUARANTEE_INIT 0x00000020 656 657 /* Contains Delta C++ code. */ 658 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 659 660 /* Guarantee that .init will start executing before any non-init 661 code in DSO is called. */ 662 #define RHF_GUARANTEE_START_INIT 0x00000080 663 664 /* Generated by pixie. */ 665 #define RHF_PIXIE 0x00000100 666 667 /* Delay-load DSO by default. */ 668 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 669 670 /* Object may be requickstarted */ 671 #define RHF_REQUICKSTART 0x00000400 672 673 /* Object has been requickstarted */ 674 #define RHF_REQUICKSTARTED 0x00000800 675 676 /* Generated by cord. */ 677 #define RHF_CORD 0x00001000 678 679 /* Object contains no unresolved undef symbols. */ 680 #define RHF_NO_UNRES_UNDEF 0x00002000 681 682 /* Symbol table is in a safe order. */ 683 #define RHF_RLD_ORDER_SAFE 0x00004000 684 685 /* Special values for the st_other field in the symbol table. These 686 are used in an Irix 5 dynamic symbol table. */ 687 688 #define STO_DEFAULT STV_DEFAULT 689 #define STO_INTERNAL STV_INTERNAL 690 #define STO_HIDDEN STV_HIDDEN 691 #define STO_PROTECTED STV_PROTECTED 692 693 /* This value is used for a mips16 .text symbol. */ 694 #define STO_MIPS16 0xf0 695 696 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 697 relocation entry specifies up to three actual relocations, all at 698 the same address. The first relocation which required a symbol 699 uses the symbol in the r_sym field. The second relocation which 700 requires a symbol uses the symbol in the r_ssym field. If all 701 three relocations require a symbol, the third one uses a zero 702 value. */ 703 704 /* An entry in a 64 bit SHT_REL section. */ 705 706 typedef struct 707 { 708 /* Address of relocation. */ 709 unsigned char r_offset[8]; 710 /* Symbol index. */ 711 unsigned char r_sym[4]; 712 /* Special symbol. */ 713 unsigned char r_ssym[1]; 714 /* Third relocation. */ 715 unsigned char r_type3[1]; 716 /* Second relocation. */ 717 unsigned char r_type2[1]; 718 /* First relocation. */ 719 unsigned char r_type[1]; 720 } Elf64_Mips_External_Rel; 721 722 typedef struct 723 { 724 /* Address of relocation. */ 725 bfd_vma r_offset; 726 /* Symbol index. */ 727 unsigned long r_sym; 728 /* Special symbol. */ 729 unsigned char r_ssym; 730 /* Third relocation. */ 731 unsigned char r_type3; 732 /* Second relocation. */ 733 unsigned char r_type2; 734 /* First relocation. */ 735 unsigned char r_type; 736 } Elf64_Mips_Internal_Rel; 737 738 /* An entry in a 64 bit SHT_RELA section. */ 739 740 typedef struct 741 { 742 /* Address of relocation. */ 743 unsigned char r_offset[8]; 744 /* Symbol index. */ 745 unsigned char r_sym[4]; 746 /* Special symbol. */ 747 unsigned char r_ssym[1]; 748 /* Third relocation. */ 749 unsigned char r_type3[1]; 750 /* Second relocation. */ 751 unsigned char r_type2[1]; 752 /* First relocation. */ 753 unsigned char r_type[1]; 754 /* Addend. */ 755 unsigned char r_addend[8]; 756 } Elf64_Mips_External_Rela; 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 /* Addend. */ 773 bfd_signed_vma r_addend; 774 } Elf64_Mips_Internal_Rela; 775 776 /* MIPS ELF 64 relocation info access macros. */ 777 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 778 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 779 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 780 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 781 782 /* Values found in the r_ssym field of a relocation entry. */ 783 784 /* No relocation. */ 785 #define RSS_UNDEF 0 786 787 /* Value of GP. */ 788 #define RSS_GP 1 789 790 /* Value of GP in object being relocated. */ 791 #define RSS_GP0 2 792 793 /* Address of location being relocated. */ 794 #define RSS_LOC 3 795 796 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 797 which starts with this header. */ 798 799 typedef struct 800 { 801 /* Type of option. */ 802 unsigned char kind[1]; 803 /* Size of option descriptor, including header. */ 804 unsigned char size[1]; 805 /* Section index of affected section, or 0 for global option. */ 806 unsigned char section[2]; 807 /* Information specific to this kind of option. */ 808 unsigned char info[4]; 809 } Elf_External_Options; 810 811 typedef struct 812 { 813 /* Type of option. */ 814 unsigned char kind; 815 /* Size of option descriptor, including header. */ 816 unsigned char size; 817 /* Section index of affected section, or 0 for global option. */ 818 unsigned short section; 819 /* Information specific to this kind of option. */ 820 unsigned long info; 821 } Elf_Internal_Options; 822 823 /* MIPS ELF option header swapping routines. */ 824 extern void bfd_mips_elf_swap_options_in 825 PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *)); 826 extern void bfd_mips_elf_swap_options_out 827 PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *)); 828 829 /* Values which may appear in the kind field of an Elf_Options 830 structure. */ 831 832 /* Undefined. */ 833 #define ODK_NULL 0 834 835 /* Register usage and GP value. */ 836 #define ODK_REGINFO 1 837 838 /* Exception processing information. */ 839 #define ODK_EXCEPTIONS 2 840 841 /* Section padding information. */ 842 #define ODK_PAD 3 843 844 /* Hardware workarounds performed. */ 845 #define ODK_HWPATCH 4 846 847 /* Fill value used by the linker. */ 848 #define ODK_FILL 5 849 850 /* Reserved space for desktop tools. */ 851 #define ODK_TAGS 6 852 853 /* Hardware workarounds, AND bits when merging. */ 854 #define ODK_HWAND 7 855 856 /* Hardware workarounds, OR bits when merging. */ 857 #define ODK_HWOR 8 858 859 /* GP group to use for text/data sections. */ 860 #define ODK_GP_GROUP 9 861 862 /* ID information. */ 863 #define ODK_IDENT 10 864 865 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 866 structure. In the 64 bit ABI, it is the following structure. The 867 info field of the options header is not used. */ 868 869 typedef struct 870 { 871 /* Mask of general purpose registers used. */ 872 unsigned char ri_gprmask[4]; 873 /* Padding. */ 874 unsigned char ri_pad[4]; 875 /* Mask of co-processor registers used. */ 876 unsigned char ri_cprmask[4][4]; 877 /* GP register value for this object file. */ 878 unsigned char ri_gp_value[8]; 879 } Elf64_External_RegInfo; 880 881 typedef struct 882 { 883 /* Mask of general purpose registers used. */ 884 unsigned long ri_gprmask; 885 /* Padding. */ 886 unsigned long ri_pad; 887 /* Mask of co-processor registers used. */ 888 unsigned long ri_cprmask[4]; 889 /* GP register value for this object file. */ 890 bfd_vma ri_gp_value; 891 } Elf64_Internal_RegInfo; 892 893 typedef struct 894 { 895 /* The hash value computed from the name of the corresponding 896 dynamic symbol. */ 897 unsigned char ms_hash_value[4]; 898 /* Contains both the dynamic relocation index and the symbol flags 899 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 900 to access the individual values. The dynamic relocation index 901 identifies the first entry in the .rel.dyn section that 902 references the dynamic symbol corresponding to this msym entry. 903 If the index is 0, no dynamic relocations are associated with the 904 symbol. The symbol flags field is reserved for future use. */ 905 unsigned char ms_info[4]; 906 } Elf32_External_Msym; 907 908 typedef struct 909 { 910 /* The hash value computed from the name of the corresponding 911 dynamic symbol. */ 912 unsigned long ms_hash_value; 913 /* Contains both the dynamic relocation index and the symbol flags 914 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 915 to access the individual values. The dynamic relocation index 916 identifies the first entry in the .rel.dyn section that 917 references the dynamic symbol corresponding to this msym entry. 918 If the index is 0, no dynamic relocations are associated with the 919 symbol. The symbol flags field is reserved for future use. */ 920 unsigned long ms_info; 921 } Elf32_Internal_Msym; 922 923 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 924 #define ELF32_MS_FLAGS(i) (i) & 0xff) 925 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 926 927 /* MIPS ELF reginfo swapping routines. */ 928 extern void bfd_mips_elf64_swap_reginfo_in 929 PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *)); 930 extern void bfd_mips_elf64_swap_reginfo_out 931 PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *)); 932 933 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 934 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 935 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 936 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 937 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 938 #define OEX_FPDBUG 0x40000 /* Force precise floating-point 939 exceptions (debug mode). */ 940 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 941 942 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 943 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 944 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 945 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 946 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 947 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 948 949 /* Masks for the info word of an ODK_PAD descriptor. */ 950 #define OPAD_PREFIX 0x01 951 #define OPAD_POSTFIX 0x02 952 #define OPAD_SYMBOL 0x04 953 954 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 955 #define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 956 #define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 957 #define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 958 #define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 959 (clean == 1). */ 960 #define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 961 load patch. */ 962 963 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 964 #define OGP_GROUP 0x0000ffff /* GP group number. */ 965 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 966 967 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 968 #define OHWA0_R4KEOP_CHECKED 0x00000001 969 #define OHWA0_R4KEOP_CLEAN 0x00000002 970 971 972 #endif /* _ELF_MIPS_H */ 973