1 /* MIPS ELF support for BFD. 2 Copyright (C) 1993, 1994, 1995, 1996, 1998 Free Software Foundation, Inc. 3 4 By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from 5 information in the System V Application Binary Interface, MIPS 6 Processor Supplement. 7 8 This file is part of BFD, the Binary File Descriptor library. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 23 24 /* This file holds definitions specific to the MIPS ELF ABI. Note 25 that most of this is not actually implemented by BFD. */ 26 27 #ifndef _ELF_MIPS_H 28 #define _ELF_MIPS_H 29 30 #include "elf/reloc-macros.h" 31 32 /* Relocation types. */ 33 START_RELOC_NUMBERS (elf_mips_reloc_type) 34 RELOC_NUMBER (R_MIPS_NONE, 0) 35 RELOC_NUMBER (R_MIPS_16, 1) 36 RELOC_NUMBER (R_MIPS_32, 2) 37 RELOC_NUMBER (R_MIPS_REL32, 3) 38 RELOC_NUMBER (R_MIPS_26, 4) 39 RELOC_NUMBER (R_MIPS_HI16, 5) 40 RELOC_NUMBER (R_MIPS_LO16, 6) 41 RELOC_NUMBER (R_MIPS_GPREL16, 7) 42 RELOC_NUMBER (R_MIPS_LITERAL, 8) 43 RELOC_NUMBER (R_MIPS_GOT16, 9) 44 RELOC_NUMBER (R_MIPS_PC16, 10) 45 RELOC_NUMBER (R_MIPS_CALL16, 11) 46 RELOC_NUMBER (R_MIPS_GPREL32, 12) 47 /* The remaining relocs are defined on Irix, although they are not 48 in the MIPS ELF ABI. */ 49 RELOC_NUMBER (R_MIPS_UNUSED1, 13) 50 RELOC_NUMBER (R_MIPS_UNUSED2, 14) 51 RELOC_NUMBER (R_MIPS_UNUSED3, 15) 52 RELOC_NUMBER (R_MIPS_SHIFT5, 16) 53 RELOC_NUMBER (R_MIPS_SHIFT6, 17) 54 RELOC_NUMBER (R_MIPS_64, 18) 55 RELOC_NUMBER (R_MIPS_GOT_DISP, 19) 56 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) 57 RELOC_NUMBER (R_MIPS_GOT_OFST, 21) 58 RELOC_NUMBER (R_MIPS_GOT_HI16, 22) 59 RELOC_NUMBER (R_MIPS_GOT_LO16, 23) 60 RELOC_NUMBER (R_MIPS_SUB, 24) 61 RELOC_NUMBER (R_MIPS_INSERT_A, 25) 62 RELOC_NUMBER (R_MIPS_INSERT_B, 26) 63 RELOC_NUMBER (R_MIPS_DELETE, 27) 64 RELOC_NUMBER (R_MIPS_HIGHER, 28) 65 RELOC_NUMBER (R_MIPS_HIGHEST, 29) 66 RELOC_NUMBER (R_MIPS_CALL_HI16, 30) 67 RELOC_NUMBER (R_MIPS_CALL_LO16, 31) 68 RELOC_NUMBER (R_MIPS_SCN_DISP, 32) 69 RELOC_NUMBER (R_MIPS_REL16, 33) 70 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) 71 RELOC_NUMBER (R_MIPS_PJUMP, 35) 72 RELOC_NUMBER (R_MIPS_RELGOT, 36) 73 RELOC_NUMBER (R_MIPS_JALR, 37) 74 RELOC_NUMBER (R_MIPS_max, 38) 75 /* These relocs are used for the mips16. */ 76 RELOC_NUMBER (R_MIPS16_26, 100) 77 RELOC_NUMBER (R_MIPS16_GPREL, 101) 78 /* These are GNU extensions to handle embedded-pic. */ 79 RELOC_NUMBER (R_MIPS_PC32, 248) 80 RELOC_NUMBER (R_MIPS_PC64, 249) 81 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 82 RELOC_NUMBER (R_MIPS_GNU_REL_LO16, 251) 83 RELOC_NUMBER (R_MIPS_GNU_REL_HI16, 252) 84 /* These are GNU extensions to enable C++ vtable garbage collection. */ 85 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 86 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 87 END_RELOC_NUMBERS 88 89 /* Processor specific flags for the ELF header e_flags field. */ 90 91 /* At least one .noreorder directive appears in the source. */ 92 #define EF_MIPS_NOREORDER 0x00000001 93 94 /* File contains position independent code. */ 95 #define EF_MIPS_PIC 0x00000002 96 97 /* Code in file uses the standard calling sequence for calling 98 position independent code. */ 99 #define EF_MIPS_CPIC 0x00000004 100 101 /* Code in file uses new ABI (-n32 on Irix 6). */ 102 #define EF_MIPS_ABI2 0x00000020 103 104 /* Indicates code compiled for a 64-bit machine in 32-bit mode. 105 (regs are 32-bits wide.) */ 106 #define EF_MIPS_32BITMODE 0x00000100 107 108 /* Four bit MIPS architecture field. */ 109 #define EF_MIPS_ARCH 0xf0000000 110 111 /* -mips1 code. */ 112 #define E_MIPS_ARCH_1 0x00000000 113 114 /* -mips2 code. */ 115 #define E_MIPS_ARCH_2 0x10000000 116 117 /* -mips3 code. */ 118 #define E_MIPS_ARCH_3 0x20000000 119 120 /* -mips4 code. */ 121 #define E_MIPS_ARCH_4 0x30000000 122 123 /* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 124 #define EF_MIPS_ABI 0x0000F000 125 126 /* The original o32 abi. */ 127 #define E_MIPS_ABI_O32 0x00001000 128 129 /* O32 extended to work on 64 bit architectures */ 130 #define E_MIPS_ABI_O64 0x00002000 131 132 /* EABI in 32 bit mode */ 133 #define E_MIPS_ABI_EABI32 0x00003000 134 135 /* EABI in 64 bit mode */ 136 #define E_MIPS_ABI_EABI64 0x00004000 137 138 139 /* Machine variant if we know it. This field was invented at Cygnus, 140 but it is hoped that other vendors will adopt it. If some standard 141 is developed, this code should be changed to follow it. */ 142 143 #define EF_MIPS_MACH 0x00FF0000 144 145 /* Cygnus is choosing values between 80 and 9F; 146 00 - 7F should be left for a future standard; 147 the rest are open. */ 148 149 #define E_MIPS_MACH_3900 0x00810000 150 151 #define E_MIPS_MACH_4010 0x00820000 152 #define E_MIPS_MACH_4100 0x00830000 153 #define E_MIPS_MACH_4650 0x00850000 154 #define E_MIPS_MACH_4111 0x00880000 155 156 157 /* Processor specific section indices. These sections do not actually 158 exist. Symbols with a st_shndx field corresponding to one of these 159 values have a special meaning. */ 160 161 /* Defined and allocated common symbol. Value is virtual address. If 162 relocated, alignment must be preserved. */ 163 #define SHN_MIPS_ACOMMON 0xff00 164 165 /* Defined and allocated text symbol. Value is virtual address. 166 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 167 #define SHN_MIPS_TEXT 0xff01 168 169 /* Defined and allocated data symbol. Value is virtual address. 170 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 171 #define SHN_MIPS_DATA 0xff02 172 173 /* Small common symbol. */ 174 #define SHN_MIPS_SCOMMON 0xff03 175 176 /* Small undefined symbol. */ 177 #define SHN_MIPS_SUNDEFINED 0xff04 178 179 /* Processor specific section types. */ 180 181 /* Section contains the set of dynamic shared objects used when 182 statically linking. */ 183 #define SHT_MIPS_LIBLIST 0x70000000 184 185 /* I'm not sure what this is, but it's used on Irix 5. */ 186 #define SHT_MIPS_MSYM 0x70000001 187 188 /* Section contains list of symbols whose definitions conflict with 189 symbols defined in shared objects. */ 190 #define SHT_MIPS_CONFLICT 0x70000002 191 192 /* Section contains the global pointer table. */ 193 #define SHT_MIPS_GPTAB 0x70000003 194 195 /* Section contains microcode information. The exact format is 196 unspecified. */ 197 #define SHT_MIPS_UCODE 0x70000004 198 199 /* Section contains some sort of debugging information. The exact 200 format is unspecified. It's probably ECOFF symbols. */ 201 #define SHT_MIPS_DEBUG 0x70000005 202 203 /* Section contains register usage information. */ 204 #define SHT_MIPS_REGINFO 0x70000006 205 206 /* ??? */ 207 #define SHT_MIPS_PACKAGE 0x70000007 208 209 /* ??? */ 210 #define SHT_MIPS_PACKSYM 0x70000008 211 212 /* ??? */ 213 #define SHT_MIPS_RELD 0x70000009 214 215 /* Section contains interface information. */ 216 #define SHT_MIPS_IFACE 0x7000000b 217 218 /* Section contains description of contents of another section. */ 219 #define SHT_MIPS_CONTENT 0x7000000c 220 221 /* Section contains miscellaneous options. */ 222 #define SHT_MIPS_OPTIONS 0x7000000d 223 224 /* ??? */ 225 #define SHT_MIPS_SHDR 0x70000010 226 227 /* ??? */ 228 #define SHT_MIPS_FDESC 0x70000011 229 230 /* ??? */ 231 #define SHT_MIPS_EXTSYM 0x70000012 232 233 /* ??? */ 234 #define SHT_MIPS_DENSE 0x70000013 235 236 /* ??? */ 237 #define SHT_MIPS_PDESC 0x70000014 238 239 /* ??? */ 240 #define SHT_MIPS_LOCSYM 0x70000015 241 242 /* ??? */ 243 #define SHT_MIPS_AUXSYM 0x70000016 244 245 /* ??? */ 246 #define SHT_MIPS_OPTSYM 0x70000017 247 248 /* ??? */ 249 #define SHT_MIPS_LOCSTR 0x70000018 250 251 /* ??? */ 252 #define SHT_MIPS_LINE 0x70000019 253 254 /* ??? */ 255 #define SHT_MIPS_RFDESC 0x7000001a 256 257 /* ??? */ 258 #define SHT_MIPS_DELTASYM 0x7000001b 259 260 /* ??? */ 261 #define SHT_MIPS_DELTAINST 0x7000001c 262 263 /* ??? */ 264 #define SHT_MIPS_DELTACLASS 0x7000001d 265 266 /* DWARF debugging section. */ 267 #define SHT_MIPS_DWARF 0x7000001e 268 269 /* ??? */ 270 #define SHT_MIPS_DELTADECL 0x7000001f 271 272 /* List of libraries the binary depends on. Includes a time stamp, version 273 number. */ 274 #define SHT_MIPS_SYMBOL_LIB 0x70000020 275 276 /* Events section. */ 277 #define SHT_MIPS_EVENTS 0x70000021 278 279 /* ??? */ 280 #define SHT_MIPS_TRANSLATE 0x70000022 281 282 /* ??? */ 283 #define SHT_MIPS_PIXIE 0x70000023 284 285 /* ??? */ 286 #define SHT_MIPS_XLATE 0x70000024 287 288 /* ??? */ 289 #define SHT_MIPS_XLATE_DEBUG 0x70000025 290 291 /* ??? */ 292 #define SHT_MIPS_WHIRL 0x70000026 293 294 /* ??? */ 295 #define SHT_MIPS_EH_REGION 0x70000027 296 297 /* ??? */ 298 #define SHT_MIPS_XLATE_OLD 0x70000028 299 300 /* ??? */ 301 #define SHT_MIPS_PDR_EXCEPTION 0x70000029 302 303 304 /* A section of type SHT_MIPS_LIBLIST contains an array of the 305 following structure. The sh_link field is the section index of the 306 string table. The sh_info field is the number of entries in the 307 section. */ 308 typedef struct 309 { 310 /* String table index for name of shared object. */ 311 unsigned long l_name; 312 /* Time stamp. */ 313 unsigned long l_time_stamp; 314 /* Checksum of symbol names and common sizes. */ 315 unsigned long l_checksum; 316 /* String table index for version. */ 317 unsigned long l_version; 318 /* Flags. */ 319 unsigned long l_flags; 320 } Elf32_Lib; 321 322 /* The external version of Elf32_Lib. */ 323 typedef struct 324 { 325 unsigned char l_name[4]; 326 unsigned char l_time_stamp[4]; 327 unsigned char l_checksum[4]; 328 unsigned char l_version[4]; 329 unsigned char l_flags[4]; 330 } Elf32_External_Lib; 331 332 /* The l_flags field of an Elf32_Lib structure may contain the 333 following flags. */ 334 335 /* Require an exact match at runtime. */ 336 #define LL_EXACT_MATCH 0x00000001 337 338 /* Ignore version incompatibilities at runtime. */ 339 #define LL_IGNORE_INT_VER 0x00000002 340 341 /* Require matching minor version number. */ 342 #define LL_REQUIRE_MINOR 0x00000004 343 344 /* ??? */ 345 #define LL_EXPORTS 0x00000008 346 347 /* Delay loading of this library until really needed. */ 348 #define LL_DELAY_LOAD 0x00000010 349 350 /* ??? Delta C++ stuff ??? */ 351 #define LL_DELTA 0x00000020 352 353 354 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the 355 .dynsym section. Each element has the following type. */ 356 typedef unsigned long Elf32_Conflict; 357 typedef unsigned char Elf32_External_Conflict[4]; 358 359 typedef unsigned long Elf64_Conflict; 360 typedef unsigned char Elf64_External_Conflict[8]; 361 362 /* A section of type SHT_MIPS_GPTAB contains information about how 363 much GP space would be required for different -G arguments. This 364 information is only used so that the linker can provide informative 365 suggestions as to the best -G value to use. The sh_info field is 366 the index of the section for which this information applies. The 367 contents of the section are an array of the following union. The 368 first element uses the gt_header field. The remaining elements use 369 the gt_entry field. */ 370 typedef union 371 { 372 struct 373 { 374 /* -G value actually used for this object file. */ 375 unsigned long gt_current_g_value; 376 /* Unused. */ 377 unsigned long gt_unused; 378 } gt_header; 379 struct 380 { 381 /* If this -G argument has been used... */ 382 unsigned long gt_g_value; 383 /* ...this many GP section bytes would be required. */ 384 unsigned long gt_bytes; 385 } gt_entry; 386 } Elf32_gptab; 387 388 /* The external version of Elf32_gptab. */ 389 390 typedef union 391 { 392 struct 393 { 394 unsigned char gt_current_g_value[4]; 395 unsigned char gt_unused[4]; 396 } gt_header; 397 struct 398 { 399 unsigned char gt_g_value[4]; 400 unsigned char gt_bytes[4]; 401 } gt_entry; 402 } Elf32_External_gptab; 403 404 /* A section of type SHT_MIPS_REGINFO contains the following 405 structure. */ 406 typedef struct 407 { 408 /* Mask of general purpose registers used. */ 409 unsigned long ri_gprmask; 410 /* Mask of co-processor registers used. */ 411 unsigned long ri_cprmask[4]; 412 /* GP register value for this object file. */ 413 long ri_gp_value; 414 } Elf32_RegInfo; 415 416 /* The external version of the Elf_RegInfo structure. */ 417 typedef struct 418 { 419 unsigned char ri_gprmask[4]; 420 unsigned char ri_cprmask[4][4]; 421 unsigned char ri_gp_value[4]; 422 } Elf32_External_RegInfo; 423 424 /* MIPS ELF .reginfo swapping routines. */ 425 extern void bfd_mips_elf32_swap_reginfo_in 426 PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *)); 427 extern void bfd_mips_elf32_swap_reginfo_out 428 PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *)); 429 430 /* Processor specific section flags. */ 431 432 /* This section must be in the global data area. */ 433 #define SHF_MIPS_GPREL 0x10000000 434 435 /* This section should be merged. */ 436 #define SHF_MIPS_MERGE 0x20000000 437 438 /* This section contains 32 bit addresses. */ 439 #define SHF_MIPS_ADDR32 0x40000000 440 441 /* This section contains 64 bit addresses. */ 442 #define SHF_MIPS_ADDR64 0x80000000 443 444 /* This section may not be stripped. */ 445 #define SHF_MIPS_NOSTRIP 0x08000000 446 447 /* This section is local to threads. */ 448 #define SHF_MIPS_LOCAL 0x04000000 449 450 /* Linker should generate implicit weak names for this section. */ 451 #define SHF_MIPS_NAMES 0x02000000 452 453 /* Processor specific program header types. */ 454 455 /* Register usage information. Identifies one .reginfo section. */ 456 #define PT_MIPS_REGINFO 0x70000000 457 458 /* Runtime procedure table. */ 459 #define PT_MIPS_RTPROC 0x70000001 460 461 /* Options (for what ???). */ 462 #define PT_MIPS_OPTIONS 0x70000002 463 464 /* Processor specific dynamic array tags. */ 465 466 /* 32 bit version number for runtime linker interface. */ 467 #define DT_MIPS_RLD_VERSION 0x70000001 468 469 /* Time stamp. */ 470 #define DT_MIPS_TIME_STAMP 0x70000002 471 472 /* Checksum of external strings and common sizes. */ 473 #define DT_MIPS_ICHECKSUM 0x70000003 474 475 /* Index of version string in string table. */ 476 #define DT_MIPS_IVERSION 0x70000004 477 478 /* 32 bits of flags. */ 479 #define DT_MIPS_FLAGS 0x70000005 480 481 /* Base address of the segment. */ 482 #define DT_MIPS_BASE_ADDRESS 0x70000006 483 484 /* ??? */ 485 #define DT_MIPS_MSYM 0x70000007 486 487 /* Address of .conflict section. */ 488 #define DT_MIPS_CONFLICT 0x70000008 489 490 /* Address of .liblist section. */ 491 #define DT_MIPS_LIBLIST 0x70000009 492 493 /* Number of local global offset table entries. */ 494 #define DT_MIPS_LOCAL_GOTNO 0x7000000a 495 496 /* Number of entries in the .conflict section. */ 497 #define DT_MIPS_CONFLICTNO 0x7000000b 498 499 /* Number of entries in the .liblist section. */ 500 #define DT_MIPS_LIBLISTNO 0x70000010 501 502 /* Number of entries in the .dynsym section. */ 503 #define DT_MIPS_SYMTABNO 0x70000011 504 505 /* Index of first external dynamic symbol not referenced locally. */ 506 #define DT_MIPS_UNREFEXTNO 0x70000012 507 508 /* Index of first dynamic symbol in global offset table. */ 509 #define DT_MIPS_GOTSYM 0x70000013 510 511 /* Number of page table entries in global offset table. */ 512 #define DT_MIPS_HIPAGENO 0x70000014 513 514 /* Address of run time loader map, used for debugging. */ 515 #define DT_MIPS_RLD_MAP 0x70000016 516 517 /* Delta C++ class definition. */ 518 #define DT_MIPS_DELTA_CLASS 0x70000017 519 520 /* Number of entries in DT_MIPS_DELTA_CLASS. */ 521 #define DT_MIPS_DELTA_CLASS_NO 0x70000018 522 523 /* Delta C++ class instances. */ 524 #define DT_MIPS_DELTA_INSTANCE 0x70000019 525 526 /* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 527 #define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 528 529 /* Delta relocations. */ 530 #define DT_MIPS_DELTA_RELOC 0x7000001b 531 532 /* Number of entries in DT_MIPS_DELTA_RELOC. */ 533 #define DT_MIPS_DELTA_RELOC_NO 0x7000001c 534 535 /* Delta symbols that Delta relocations refer to. */ 536 #define DT_MIPS_DELTA_SYM 0x7000001d 537 538 /* Number of entries in DT_MIPS_DELTA_SYM. */ 539 #define DT_MIPS_DELTA_SYM_NO 0x7000001e 540 541 /* Delta symbols that hold class declarations. */ 542 #define DT_MIPS_DELTA_CLASSSYM 0x70000020 543 544 /* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 545 #define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 546 547 /* Flags indicating information about C++ flavor. */ 548 #define DT_MIPS_CXX_FLAGS 0x70000022 549 550 /* Pixie information (???). */ 551 #define DT_MIPS_PIXIE_INIT 0x70000023 552 553 /* ??? */ 554 #define DT_MIPS_SYMBOL_LIB 0x70000024 555 556 /* ??? */ 557 #define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 558 559 /* ??? */ 560 #define DT_MIPS_LOCAL_GOTIDX 0x70000026 561 562 /* ??? */ 563 #define DT_MIPS_HIDDEN_GOTIDX 0x70000027 564 565 /* ??? */ 566 #define DT_MIPS_PROTECTED_GOTIDX 0x70000028 567 568 /* Address of `.MIPS.options'. */ 569 #define DT_MIPS_OPTIONS 0x70000029 570 571 /* Address of `.interface'. */ 572 #define DT_MIPS_INTERFACE 0x7000002a 573 574 /* ??? */ 575 #define DT_MIPS_DYNSTR_ALIGN 0x7000002b 576 577 /* Size of the .interface section. */ 578 #define DT_MIPS_INTERFACE_SIZE 0x7000002c 579 580 /* Size of rld_text_resolve function stored in the GOT. */ 581 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 582 583 /* Default suffix of DSO to be added by rld on dlopen() calls. */ 584 #define DT_MIPS_PERF_SUFFIX 0x7000002e 585 586 /* Size of compact relocation section (O32). */ 587 #define DT_MIPS_COMPACT_SIZE 0x7000002f 588 589 /* GP value for auxiliary GOTs. */ 590 #define DT_MIPS_GP_VALUE 0x70000030 591 592 /* Address of auxiliary .dynamic. */ 593 #define DT_MIPS_AUX_DYNAMIC 0x70000031 594 595 /* Flags which may appear in a DT_MIPS_FLAGS entry. */ 596 597 /* No flags. */ 598 #define RHF_NONE 0x00000000 599 600 /* Uses shortcut pointers. */ 601 #define RHF_QUICKSTART 0x00000001 602 603 /* Hash size is not a power of two. */ 604 #define RHF_NOTPOT 0x00000002 605 606 /* Ignore LD_LIBRARY_PATH. */ 607 #define RHS_NO_LIBRARY_REPLACEMENT \ 608 0x00000004 609 610 #define RHF_NO_MOVE 0x00000008 611 #define RHF_SGI_ONLY 0x00000010 612 #define RHF_GUARANTEE_INIT 0x00000020 613 #define RHF_DELTA_C_PLUS_PLUS 0x00000040 614 #define RHF_GUARANTEE_START_INIT 0x00000080 615 #define RHF_PIXIE 0x00000100 616 #define RHF_DEFAULT_DELAY_LOAD 0x00000200 617 #define RHF_REQUICKSTART 0x00000400 618 #define RHF_REQUICKSTARTED 0x00000800 619 #define RHF_CORD 0x00001000 620 #define RHF_NO_UNRES_UNDEF 0x00002000 621 #define RHF_RLD_ORDER_SAFE 0x00004000 622 623 /* Special values for the st_other field in the symbol table. These 624 are used in an Irix 5 dynamic symbol table. */ 625 626 #define STO_DEFAULT STV_DEFAULT 627 #define STO_INTERNAL STV_INTERNAL 628 #define STO_HIDDEN STV_HIDDEN 629 #define STO_PROTECTED STV_PROTECTED 630 631 /* This value is used for a mips16 .text symbol. */ 632 #define STO_MIPS16 0xf0 633 634 /* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 635 relocation entry specifies up to three actual relocations, all at 636 the same address. The first relocation which required a symbol 637 uses the symbol in the r_sym field. The second relocation which 638 requires a symbol uses the symbol in the r_ssym field. If all 639 three relocations require a symbol, the third one uses a zero 640 value. */ 641 642 /* An entry in a 64 bit SHT_REL section. */ 643 644 typedef struct 645 { 646 /* Address of relocation. */ 647 unsigned char r_offset[8]; 648 /* Symbol index. */ 649 unsigned char r_sym[4]; 650 /* Special symbol. */ 651 unsigned char r_ssym[1]; 652 /* Third relocation. */ 653 unsigned char r_type3[1]; 654 /* Second relocation. */ 655 unsigned char r_type2[1]; 656 /* First relocation. */ 657 unsigned char r_type[1]; 658 } Elf64_Mips_External_Rel; 659 660 typedef struct 661 { 662 /* Address of relocation. */ 663 bfd_vma r_offset; 664 /* Symbol index. */ 665 unsigned long r_sym; 666 /* Special symbol. */ 667 unsigned char r_ssym; 668 /* Third relocation. */ 669 unsigned char r_type3; 670 /* Second relocation. */ 671 unsigned char r_type2; 672 /* First relocation. */ 673 unsigned char r_type; 674 } Elf64_Mips_Internal_Rel; 675 676 /* An entry in a 64 bit SHT_RELA section. */ 677 678 typedef struct 679 { 680 /* Address of relocation. */ 681 unsigned char r_offset[8]; 682 /* Symbol index. */ 683 unsigned char r_sym[4]; 684 /* Special symbol. */ 685 unsigned char r_ssym[1]; 686 /* Third relocation. */ 687 unsigned char r_type3[1]; 688 /* Second relocation. */ 689 unsigned char r_type2[1]; 690 /* First relocation. */ 691 unsigned char r_type[1]; 692 /* Addend. */ 693 unsigned char r_addend[8]; 694 } Elf64_Mips_External_Rela; 695 696 typedef struct 697 { 698 /* Address of relocation. */ 699 bfd_vma r_offset; 700 /* Symbol index. */ 701 unsigned long r_sym; 702 /* Special symbol. */ 703 unsigned char r_ssym; 704 /* Third relocation. */ 705 unsigned char r_type3; 706 /* Second relocation. */ 707 unsigned char r_type2; 708 /* First relocation. */ 709 unsigned char r_type; 710 /* Addend. */ 711 bfd_signed_vma r_addend; 712 } Elf64_Mips_Internal_Rela; 713 714 /* Values found in the r_ssym field of a relocation entry. */ 715 716 /* No relocation. */ 717 #define RSS_UNDEF 0 718 719 /* Value of GP. */ 720 #define RSS_GP 1 721 722 /* Value of GP in object being relocated. */ 723 #define RSS_GP0 2 724 725 /* Address of location being relocated. */ 726 #define RSS_LOC 3 727 728 /* A SHT_MIPS_OPTIONS section contains a series of options, each of 729 which starts with this header. */ 730 731 typedef struct 732 { 733 /* Type of option. */ 734 unsigned char kind[1]; 735 /* Size of option descriptor, including header. */ 736 unsigned char size[1]; 737 /* Section index of affected section, or 0 for global option. */ 738 unsigned char section[2]; 739 /* Information specific to this kind of option. */ 740 unsigned char info[4]; 741 } Elf_External_Options; 742 743 typedef struct 744 { 745 /* Type of option. */ 746 unsigned char kind; 747 /* Size of option descriptor, including header. */ 748 unsigned char size; 749 /* Section index of affected section, or 0 for global option. */ 750 unsigned short section; 751 /* Information specific to this kind of option. */ 752 unsigned long info; 753 } Elf_Internal_Options; 754 755 /* MIPS ELF option header swapping routines. */ 756 extern void bfd_mips_elf_swap_options_in 757 PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *)); 758 extern void bfd_mips_elf_swap_options_out 759 PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *)); 760 761 /* Values which may appear in the kind field of an Elf_Options 762 structure. */ 763 764 /* Undefined. */ 765 #define ODK_NULL 0 766 767 /* Register usage and GP value. */ 768 #define ODK_REGINFO 1 769 770 /* Exception processing information. */ 771 #define ODK_EXCEPTIONS 2 772 773 /* Section padding information. */ 774 #define ODK_PAD 3 775 776 /* Hardware workarounds performed. */ 777 #define ODK_HWPATCH 4 778 779 /* Fill value used by the linker. */ 780 #define ODK_FILL 5 781 782 /* Reserved space for desktop tools. */ 783 #define ODK_TAGS 6 784 785 /* Hardware workarounds, AND bits when merging. */ 786 #define ODK_HWAND 7 787 788 /* Hardware workarounds, OR bits when merging. */ 789 #define ODK_HWOR 8 790 791 /* GP group to use for text/data sections. */ 792 #define ODK_GP_GROUP 9 793 794 /* ID information. */ 795 #define ODK_IDENT 10 796 797 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 798 structure. In the 64 bit ABI, it is the following structure. The 799 info field of the options header is not used. */ 800 801 typedef struct 802 { 803 /* Mask of general purpose registers used. */ 804 unsigned char ri_gprmask[4]; 805 /* Padding. */ 806 unsigned char ri_pad[4]; 807 /* Mask of co-processor registers used. */ 808 unsigned char ri_cprmask[4][4]; 809 /* GP register value for this object file. */ 810 unsigned char ri_gp_value[8]; 811 } Elf64_External_RegInfo; 812 813 typedef struct 814 { 815 /* Mask of general purpose registers used. */ 816 unsigned long ri_gprmask; 817 /* Padding. */ 818 unsigned long ri_pad; 819 /* Mask of co-processor registers used. */ 820 unsigned long ri_cprmask[4]; 821 /* GP register value for this object file. */ 822 bfd_vma ri_gp_value; 823 } Elf64_Internal_RegInfo; 824 825 typedef struct 826 { 827 /* The hash value computed from the name of the corresponding 828 dynamic symbol. */ 829 unsigned char ms_hash_value[4]; 830 /* Contains both the dynamic relocation index and the symbol flags 831 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 832 to access the individual values. The dynamic relocation index 833 identifies the first entry in the .rel.dyn section that 834 references the dynamic symbol corresponding to this msym entry. 835 If the index is 0, no dynamic relocations are associated with the 836 symbol. The symbol flags field is reserved for future use. */ 837 unsigned char ms_info[4]; 838 } Elf32_External_Msym; 839 840 typedef struct 841 { 842 /* The hash value computed from the name of the corresponding 843 dynamic symbol. */ 844 unsigned long ms_hash_value; 845 /* Contains both the dynamic relocation index and the symbol flags 846 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 847 to access the individual values. The dynamic relocation index 848 identifies the first entry in the .rel.dyn section that 849 references the dynamic symbol corresponding to this msym entry. 850 If the index is 0, no dynamic relocations are associated with the 851 symbol. The symbol flags field is reserved for future use. */ 852 unsigned long ms_info; 853 } Elf32_Internal_Msym; 854 855 #define ELF32_MS_REL_INDEX(i) ((i) >> 8) 856 #define ELF32_MS_FLAGS(i) (i) & 0xff) 857 #define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 858 859 /* MIPS ELF reginfo swapping routines. */ 860 extern void bfd_mips_elf64_swap_reginfo_in 861 PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *)); 862 extern void bfd_mips_elf64_swap_reginfo_out 863 PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *)); 864 865 /* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 866 #define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 867 #define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 868 #define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 869 #define OEX_SMM 0x20000 /* Force sequential memory mode. */ 870 #define OEX_FPDBUG 0x40000 /* Force floating-point debug mode. */ 871 #define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 872 873 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 874 #define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 875 #define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 876 #define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 877 #define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 878 #define OEX_FPU_INEX 0x01 /* Inexact exception. */ 879 880 /* Masks for the info word of an ODK_PAD descriptor. */ 881 #define OPAD_PREFIX 0x01 882 #define OPAD_POSTFIX 0x02 883 #define OPAD_SYMBOL 0x04 884 885 /* Masks for the info word of an ODK_HWPATCH descriptor. */ 886 #define OHW_R4KEOP 0x01 /* R4000 end-of-page patch. */ 887 #define OHW_R8KPFETCH 0x02 /* May need R8000 prefetch patch. */ 888 #define OHW_R5KEOP 0x04 /* R5000 end-of-page patch. */ 889 #define OHW_R5KCVTL 0x08 /* R5000 cvt.[ds].l bug (clean == 1). */ 890 891 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 892 #define OGP_GROUP 0x0000ffff /* GP group number. */ 893 #define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 894 895 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 896 #define OHWA0_R4KEOP_CHECKED 0x00000001 897 #define OHWA0_R4KEOP_CLEAN 0x00000002 898 899 900 #endif /* _ELF_MIPS_H */ 901