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 10This file is part of BFD, the Binary File Descriptor library. 11 12This program is free software; you can redistribute it and/or modify 13it under the terms of the GNU General Public License as published by 14the Free Software Foundation; either version 2 of the License, or 15(at your option) any later version. 16 17This program is distributed in the hope that it will be useful, 18but WITHOUT ANY WARRANTY; without even the implied warranty of 19MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20GNU General Public License for more details. 21 22You should have received a copy of the GNU General Public License 23along with this program; if not, write to the Free Software 24Foundation, 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. */ 35START_RELOC_NUMBERS (elf_mips_reloc_type) 36 RELOC_NUMBER (R_MIPS_NONE, 0) 37 RELOC_NUMBER (R_MIPS_16, 1) 38 RELOC_NUMBER (R_MIPS_32, 2) /* In Elf 64: alias R_MIPS_ADD */ 39 RELOC_NUMBER (R_MIPS_REL32, 3) /* In Elf 64: alias R_MIPS_REL */ 40 RELOC_NUMBER (R_MIPS_26, 4) 41 RELOC_NUMBER (R_MIPS_HI16, 5) 42 RELOC_NUMBER (R_MIPS_LO16, 6) 43 RELOC_NUMBER (R_MIPS_GPREL16, 7) /* In Elf 64: alias R_MIPS_GPREL */ 44 RELOC_NUMBER (R_MIPS_LITERAL, 8) 45 RELOC_NUMBER (R_MIPS_GOT16, 9) /* In Elf 64: alias R_MIPS_GOT */ 46 RELOC_NUMBER (R_MIPS_PC16, 10) 47 RELOC_NUMBER (R_MIPS_CALL16, 11) /* In Elf 64: alias R_MIPS_CALL */ 48 RELOC_NUMBER (R_MIPS_GPREL32, 12) 49 /* The remaining relocs are defined on Irix, although they are not 50 in the MIPS ELF ABI. */ 51 RELOC_NUMBER (R_MIPS_UNUSED1, 13) 52 RELOC_NUMBER (R_MIPS_UNUSED2, 14) 53 RELOC_NUMBER (R_MIPS_UNUSED3, 15) 54 RELOC_NUMBER (R_MIPS_SHIFT5, 16) 55 RELOC_NUMBER (R_MIPS_SHIFT6, 17) 56 RELOC_NUMBER (R_MIPS_64, 18) 57 RELOC_NUMBER (R_MIPS_GOT_DISP, 19) 58 RELOC_NUMBER (R_MIPS_GOT_PAGE, 20) 59 RELOC_NUMBER (R_MIPS_GOT_OFST, 21) 60 RELOC_NUMBER (R_MIPS_GOT_HI16, 22) 61 RELOC_NUMBER (R_MIPS_GOT_LO16, 23) 62 RELOC_NUMBER (R_MIPS_SUB, 24) 63 RELOC_NUMBER (R_MIPS_INSERT_A, 25) 64 RELOC_NUMBER (R_MIPS_INSERT_B, 26) 65 RELOC_NUMBER (R_MIPS_DELETE, 27) 66 RELOC_NUMBER (R_MIPS_HIGHER, 28) 67 RELOC_NUMBER (R_MIPS_HIGHEST, 29) 68 RELOC_NUMBER (R_MIPS_CALL_HI16, 30) 69 RELOC_NUMBER (R_MIPS_CALL_LO16, 31) 70 RELOC_NUMBER (R_MIPS_SCN_DISP, 32) 71 RELOC_NUMBER (R_MIPS_REL16, 33) 72 RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34) 73 RELOC_NUMBER (R_MIPS_PJUMP, 35) 74 RELOC_NUMBER (R_MIPS_RELGOT, 36) 75 RELOC_NUMBER (R_MIPS_JALR, 37) 76 /* TLS relocations. */ 77 RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38) 78 RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39) 79 RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40) 80 RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41) 81 RELOC_NUMBER (R_MIPS_TLS_GD, 42) 82 RELOC_NUMBER (R_MIPS_TLS_LDM, 43) 83 RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44) 84 RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45) 85 RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46) 86 RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47) 87 RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48) 88 RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49) 89 RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50) 90 RELOC_NUMBER (R_MIPS_GLOB_DAT, 51) 91 FAKE_RELOC (R_MIPS_max, 52) 92 /* These relocs are used for the mips16. */ 93 FAKE_RELOC (R_MIPS16_min, 100) 94 RELOC_NUMBER (R_MIPS16_26, 100) 95 RELOC_NUMBER (R_MIPS16_GPREL, 101) 96 RELOC_NUMBER (R_MIPS16_GOT16, 102) 97 RELOC_NUMBER (R_MIPS16_CALL16, 103) 98 RELOC_NUMBER (R_MIPS16_HI16, 104) 99 RELOC_NUMBER (R_MIPS16_LO16, 105) 100 FAKE_RELOC (R_MIPS16_max, 106) 101 /* These relocations are specific to VxWorks. */ 102 RELOC_NUMBER (R_MIPS_COPY, 126) 103 RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127) 104 /* This was a GNU extension used by embedded-PIC. It was co-opted by 105 mips-linux for exception-handling data. It is no longer used, but 106 should continue to be supported by the linker for backward 107 compatibility. (GCC stopped using it in May, 2004.) */ 108 RELOC_NUMBER (R_MIPS_PC32, 248) 109 /* FIXME: this relocation is used internally by gas. */ 110 RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250) 111 /* These are GNU extensions to enable C++ vtable garbage collection. */ 112 RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253) 113 RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254) 114END_RELOC_NUMBERS (R_MIPS_maxext) 115 116/* Processor specific flags for the ELF header e_flags field. */ 117 118/* At least one .noreorder directive appears in the source. */ 119#define EF_MIPS_NOREORDER 0x00000001 120 121/* File contains position independent code. */ 122#define EF_MIPS_PIC 0x00000002 123 124/* Code in file uses the standard calling sequence for calling 125 position independent code. */ 126#define EF_MIPS_CPIC 0x00000004 127 128/* ??? Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a. */ 129#define EF_MIPS_XGOT 0x00000008 130 131/* Code in file uses UCODE (obsolete) */ 132#define EF_MIPS_UCODE 0x00000010 133 134/* Code in file uses new ABI (-n32 on Irix 6). */ 135#define EF_MIPS_ABI2 0x00000020 136 137/* Process the .MIPS.options section first by ld */ 138#define EF_MIPS_OPTIONS_FIRST 0x00000080 139 140/* Architectural Extensions used by this file */ 141#define EF_MIPS_ARCH_ASE 0x0f000000 142 143/* Use MDMX multimedia extensions */ 144#define EF_MIPS_ARCH_ASE_MDMX 0x08000000 145 146/* Use MIPS-16 ISA extensions */ 147#define EF_MIPS_ARCH_ASE_M16 0x04000000 148 149/* Indicates code compiled for a 64-bit machine in 32-bit mode. 150 (regs are 32-bits wide.) */ 151#define EF_MIPS_32BITMODE 0x00000100 152 153/* Four bit MIPS architecture field. */ 154#define EF_MIPS_ARCH 0xf0000000 155 156/* -mips1 code. */ 157#define E_MIPS_ARCH_1 0x00000000 158 159/* -mips2 code. */ 160#define E_MIPS_ARCH_2 0x10000000 161 162/* -mips3 code. */ 163#define E_MIPS_ARCH_3 0x20000000 164 165/* -mips4 code. */ 166#define E_MIPS_ARCH_4 0x30000000 167 168/* -mips5 code. */ 169#define E_MIPS_ARCH_5 0x40000000 170 171/* -mips32 code. */ 172#define E_MIPS_ARCH_32 0x50000000 173 174/* -mips64 code. */ 175#define E_MIPS_ARCH_64 0x60000000 176 177/* -mips32r2 code. */ 178#define E_MIPS_ARCH_32R2 0x70000000 179 180/* -mips64r2 code. */ 181#define E_MIPS_ARCH_64R2 0x80000000 182 183/* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 184#define EF_MIPS_ABI 0x0000F000 185 186/* The original o32 abi. */ 187#define E_MIPS_ABI_O32 0x00001000 188 189/* O32 extended to work on 64 bit architectures */ 190#define E_MIPS_ABI_O64 0x00002000 191 192/* EABI in 32 bit mode */ 193#define E_MIPS_ABI_EABI32 0x00003000 194 195/* EABI in 64 bit mode */ 196#define E_MIPS_ABI_EABI64 0x00004000 197 198 199/* Machine variant if we know it. This field was invented at Cygnus, 200 but it is hoped that other vendors will adopt it. If some standard 201 is developed, this code should be changed to follow it. */ 202 203#define EF_MIPS_MACH 0x00FF0000 204 205/* Cygnus is choosing values between 80 and 9F; 206 00 - 7F should be left for a future standard; 207 the rest are open. */ 208 209#define E_MIPS_MACH_3900 0x00810000 210#define E_MIPS_MACH_4010 0x00820000 211#define E_MIPS_MACH_4100 0x00830000 212#define E_MIPS_MACH_4650 0x00850000 213#define E_MIPS_MACH_4120 0x00870000 214#define E_MIPS_MACH_4111 0x00880000 215#define E_MIPS_MACH_SB1 0x008a0000 216#define E_MIPS_MACH_5400 0x00910000 217#define E_MIPS_MACH_5500 0x00980000 218#define E_MIPS_MACH_9000 0x00990000 219 220/* Processor specific section indices. These sections do not actually 221 exist. Symbols with a st_shndx field corresponding to one of these 222 values have a special meaning. */ 223 224/* Defined and allocated common symbol. Value is virtual address. If 225 relocated, alignment must be preserved. */ 226#define SHN_MIPS_ACOMMON 0xff00 227 228/* Defined and allocated text symbol. Value is virtual address. 229 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 230#define SHN_MIPS_TEXT 0xff01 231 232/* Defined and allocated data symbol. Value is virtual address. 233 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 234#define SHN_MIPS_DATA 0xff02 235 236/* Small common symbol. */ 237#define SHN_MIPS_SCOMMON 0xff03 238 239/* Small undefined symbol. */ 240#define SHN_MIPS_SUNDEFINED 0xff04 241 242/* Processor specific section types. */ 243 244/* Section contains the set of dynamic shared objects used when 245 statically linking. */ 246#define SHT_MIPS_LIBLIST 0x70000000 247 248/* I'm not sure what this is, but it's used on Irix 5. */ 249#define SHT_MIPS_MSYM 0x70000001 250 251/* Section contains list of symbols whose definitions conflict with 252 symbols defined in shared objects. */ 253#define SHT_MIPS_CONFLICT 0x70000002 254 255/* Section contains the global pointer table. */ 256#define SHT_MIPS_GPTAB 0x70000003 257 258/* Section contains microcode information. The exact format is 259 unspecified. */ 260#define SHT_MIPS_UCODE 0x70000004 261 262/* Section contains some sort of debugging information. The exact 263 format is unspecified. It's probably ECOFF symbols. */ 264#define SHT_MIPS_DEBUG 0x70000005 265 266/* Section contains register usage information. */ 267#define SHT_MIPS_REGINFO 0x70000006 268 269/* ??? */ 270#define SHT_MIPS_PACKAGE 0x70000007 271 272/* ??? */ 273#define SHT_MIPS_PACKSYM 0x70000008 274 275/* ??? */ 276#define SHT_MIPS_RELD 0x70000009 277 278/* Section contains interface information. */ 279#define SHT_MIPS_IFACE 0x7000000b 280 281/* Section contains description of contents of another section. */ 282#define SHT_MIPS_CONTENT 0x7000000c 283 284/* Section contains miscellaneous options. */ 285#define SHT_MIPS_OPTIONS 0x7000000d 286 287/* ??? */ 288#define SHT_MIPS_SHDR 0x70000010 289 290/* ??? */ 291#define SHT_MIPS_FDESC 0x70000011 292 293/* ??? */ 294#define SHT_MIPS_EXTSYM 0x70000012 295 296/* ??? */ 297#define SHT_MIPS_DENSE 0x70000013 298 299/* ??? */ 300#define SHT_MIPS_PDESC 0x70000014 301 302/* ??? */ 303#define SHT_MIPS_LOCSYM 0x70000015 304 305/* ??? */ 306#define SHT_MIPS_AUXSYM 0x70000016 307 308/* ??? */ 309#define SHT_MIPS_OPTSYM 0x70000017 310 311/* ??? */ 312#define SHT_MIPS_LOCSTR 0x70000018 313 314/* ??? */ 315#define SHT_MIPS_LINE 0x70000019 316 317/* ??? */ 318#define SHT_MIPS_RFDESC 0x7000001a 319 320/* Delta C++: symbol table */ 321#define SHT_MIPS_DELTASYM 0x7000001b 322 323/* Delta C++: instance table */ 324#define SHT_MIPS_DELTAINST 0x7000001c 325 326/* Delta C++: class table */ 327#define SHT_MIPS_DELTACLASS 0x7000001d 328 329/* DWARF debugging section. */ 330#define SHT_MIPS_DWARF 0x7000001e 331 332/* Delta C++: declarations */ 333#define SHT_MIPS_DELTADECL 0x7000001f 334 335/* List of libraries the binary depends on. Includes a time stamp, version 336 number. */ 337#define SHT_MIPS_SYMBOL_LIB 0x70000020 338 339/* Events section. */ 340#define SHT_MIPS_EVENTS 0x70000021 341 342/* ??? */ 343#define SHT_MIPS_TRANSLATE 0x70000022 344 345/* Special pixie sections */ 346#define SHT_MIPS_PIXIE 0x70000023 347 348/* Address translation table (for debug info) */ 349#define SHT_MIPS_XLATE 0x70000024 350 351/* SGI internal address translation table (for debug info) */ 352#define SHT_MIPS_XLATE_DEBUG 0x70000025 353 354/* Intermediate code */ 355#define SHT_MIPS_WHIRL 0x70000026 356 357/* C++ exception handling region info */ 358#define SHT_MIPS_EH_REGION 0x70000027 359 360/* Obsolete address translation table (for debug info) */ 361#define SHT_MIPS_XLATE_OLD 0x70000028 362 363/* Runtime procedure descriptor table exception information (ucode) ??? */ 364#define SHT_MIPS_PDR_EXCEPTION 0x70000029 365 366 367/* A section of type SHT_MIPS_LIBLIST contains an array of the 368 following structure. The sh_link field is the section index of the 369 string table. The sh_info field is the number of entries in the 370 section. */ 371typedef struct 372{ 373 /* String table index for name of shared object. */ 374 unsigned long l_name; 375 /* Time stamp. */ 376 unsigned long l_time_stamp; 377 /* Checksum of symbol names and common sizes. */ 378 unsigned long l_checksum; 379 /* String table index for version. */ 380 unsigned long l_version; 381 /* Flags. */ 382 unsigned long l_flags; 383} Elf32_Lib; 384 385/* The external version of Elf32_Lib. */ 386typedef struct 387{ 388 unsigned char l_name[4]; 389 unsigned char l_time_stamp[4]; 390 unsigned char l_checksum[4]; 391 unsigned char l_version[4]; 392 unsigned char l_flags[4]; 393} Elf32_External_Lib; 394 395/* The l_flags field of an Elf32_Lib structure may contain the 396 following flags. */ 397 398/* Require an exact match at runtime. */ 399#define LL_EXACT_MATCH 0x00000001 400 401/* Ignore version incompatibilities at runtime. */ 402#define LL_IGNORE_INT_VER 0x00000002 403 404/* Require matching minor version number. */ 405#define LL_REQUIRE_MINOR 0x00000004 406 407/* ??? */ 408#define LL_EXPORTS 0x00000008 409 410/* Delay loading of this library until really needed. */ 411#define LL_DELAY_LOAD 0x00000010 412 413/* ??? Delta C++ stuff ??? */ 414#define LL_DELTA 0x00000020 415 416 417/* A section of type SHT_MIPS_CONFLICT is an array of indices into the 418 .dynsym section. Each element has the following type. */ 419typedef unsigned long Elf32_Conflict; 420typedef unsigned char Elf32_External_Conflict[4]; 421 422typedef unsigned long Elf64_Conflict; 423typedef unsigned char Elf64_External_Conflict[8]; 424 425/* A section of type SHT_MIPS_GPTAB contains information about how 426 much GP space would be required for different -G arguments. This 427 information is only used so that the linker can provide informative 428 suggestions as to the best -G value to use. The sh_info field is 429 the index of the section for which this information applies. The 430 contents of the section are an array of the following union. The 431 first element uses the gt_header field. The remaining elements use 432 the gt_entry field. */ 433typedef union 434{ 435 struct 436 { 437 /* -G value actually used for this object file. */ 438 unsigned long gt_current_g_value; 439 /* Unused. */ 440 unsigned long gt_unused; 441 } gt_header; 442 struct 443 { 444 /* If this -G argument has been used... */ 445 unsigned long gt_g_value; 446 /* ...this many GP section bytes would be required. */ 447 unsigned long gt_bytes; 448 } gt_entry; 449} Elf32_gptab; 450 451/* The external version of Elf32_gptab. */ 452 453typedef union 454{ 455 struct 456 { 457 unsigned char gt_current_g_value[4]; 458 unsigned char gt_unused[4]; 459 } gt_header; 460 struct 461 { 462 unsigned char gt_g_value[4]; 463 unsigned char gt_bytes[4]; 464 } gt_entry; 465} Elf32_External_gptab; 466 467/* A section of type SHT_MIPS_REGINFO contains the following 468 structure. */ 469typedef struct 470{ 471 /* Mask of general purpose registers used. */ 472 unsigned long ri_gprmask; 473 /* Mask of co-processor registers used. */ 474 unsigned long ri_cprmask[4]; 475 /* GP register value for this object file. */ 476 long ri_gp_value; 477} Elf32_RegInfo; 478 479/* The external version of the Elf_RegInfo structure. */ 480typedef struct 481{ 482 unsigned char ri_gprmask[4]; 483 unsigned char ri_cprmask[4][4]; 484 unsigned char ri_gp_value[4]; 485} Elf32_External_RegInfo; 486 487/* MIPS ELF .reginfo swapping routines. */ 488extern void bfd_mips_elf32_swap_reginfo_in 489 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 490extern void bfd_mips_elf32_swap_reginfo_out 491 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 492 493/* Processor specific section flags. */ 494 495/* This section must be in the global data area. */ 496#define SHF_MIPS_GPREL 0x10000000 497 498/* This section should be merged. */ 499#define SHF_MIPS_MERGE 0x20000000 500 501/* This section contains address data of size implied by section 502 element size. */ 503#define SHF_MIPS_ADDR 0x40000000 504 505/* This section contains string data. */ 506#define SHF_MIPS_STRING 0x80000000 507 508/* This section may not be stripped. */ 509#define SHF_MIPS_NOSTRIP 0x08000000 510 511/* This section is local to threads. */ 512#define SHF_MIPS_LOCAL 0x04000000 513 514/* Linker should generate implicit weak names for this section. */ 515#define SHF_MIPS_NAMES 0x02000000 516 517/* Section contais text/data which may be replicated in other sections. 518 Linker should retain only one copy. */ 519#define SHF_MIPS_NODUPES 0x01000000 520 521/* Processor specific program header types. */ 522 523/* Register usage information. Identifies one .reginfo section. */ 524#define PT_MIPS_REGINFO 0x70000000 525 526/* Runtime procedure table. */ 527#define PT_MIPS_RTPROC 0x70000001 528 529/* .MIPS.options section. */ 530#define PT_MIPS_OPTIONS 0x70000002 531 532/* Processor specific dynamic array tags. */ 533 534/* 32 bit version number for runtime linker interface. */ 535#define DT_MIPS_RLD_VERSION 0x70000001 536 537/* Time stamp. */ 538#define DT_MIPS_TIME_STAMP 0x70000002 539 540/* Checksum of external strings and common sizes. */ 541#define DT_MIPS_ICHECKSUM 0x70000003 542 543/* Index of version string in string table. */ 544#define DT_MIPS_IVERSION 0x70000004 545 546/* 32 bits of flags. */ 547#define DT_MIPS_FLAGS 0x70000005 548 549/* Base address of the segment. */ 550#define DT_MIPS_BASE_ADDRESS 0x70000006 551 552/* ??? */ 553#define DT_MIPS_MSYM 0x70000007 554 555/* Address of .conflict section. */ 556#define DT_MIPS_CONFLICT 0x70000008 557 558/* Address of .liblist section. */ 559#define DT_MIPS_LIBLIST 0x70000009 560 561/* Number of local global offset table entries. */ 562#define DT_MIPS_LOCAL_GOTNO 0x7000000a 563 564/* Number of entries in the .conflict section. */ 565#define DT_MIPS_CONFLICTNO 0x7000000b 566 567/* Number of entries in the .liblist section. */ 568#define DT_MIPS_LIBLISTNO 0x70000010 569 570/* Number of entries in the .dynsym section. */ 571#define DT_MIPS_SYMTABNO 0x70000011 572 573/* Index of first external dynamic symbol not referenced locally. */ 574#define DT_MIPS_UNREFEXTNO 0x70000012 575 576/* Index of first dynamic symbol in global offset table. */ 577#define DT_MIPS_GOTSYM 0x70000013 578 579/* Number of page table entries in global offset table. */ 580#define DT_MIPS_HIPAGENO 0x70000014 581 582/* Address of run time loader map, used for debugging. */ 583#define DT_MIPS_RLD_MAP 0x70000016 584 585/* Delta C++ class definition. */ 586#define DT_MIPS_DELTA_CLASS 0x70000017 587 588/* Number of entries in DT_MIPS_DELTA_CLASS. */ 589#define DT_MIPS_DELTA_CLASS_NO 0x70000018 590 591/* Delta C++ class instances. */ 592#define DT_MIPS_DELTA_INSTANCE 0x70000019 593 594/* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 595#define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 596 597/* Delta relocations. */ 598#define DT_MIPS_DELTA_RELOC 0x7000001b 599 600/* Number of entries in DT_MIPS_DELTA_RELOC. */ 601#define DT_MIPS_DELTA_RELOC_NO 0x7000001c 602 603/* Delta symbols that Delta relocations refer to. */ 604#define DT_MIPS_DELTA_SYM 0x7000001d 605 606/* Number of entries in DT_MIPS_DELTA_SYM. */ 607#define DT_MIPS_DELTA_SYM_NO 0x7000001e 608 609/* Delta symbols that hold class declarations. */ 610#define DT_MIPS_DELTA_CLASSSYM 0x70000020 611 612/* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 613#define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 614 615/* Flags indicating information about C++ flavor. */ 616#define DT_MIPS_CXX_FLAGS 0x70000022 617 618/* Pixie information (???). */ 619#define DT_MIPS_PIXIE_INIT 0x70000023 620 621/* Address of .MIPS.symlib */ 622#define DT_MIPS_SYMBOL_LIB 0x70000024 623 624/* The GOT index of the first PTE for a segment */ 625#define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 626 627/* The GOT index of the first PTE for a local symbol */ 628#define DT_MIPS_LOCAL_GOTIDX 0x70000026 629 630/* The GOT index of the first PTE for a hidden symbol */ 631#define DT_MIPS_HIDDEN_GOTIDX 0x70000027 632 633/* The GOT index of the first PTE for a protected symbol */ 634#define DT_MIPS_PROTECTED_GOTIDX 0x70000028 635 636/* Address of `.MIPS.options'. */ 637#define DT_MIPS_OPTIONS 0x70000029 638 639/* Address of `.interface'. */ 640#define DT_MIPS_INTERFACE 0x7000002a 641 642/* ??? */ 643#define DT_MIPS_DYNSTR_ALIGN 0x7000002b 644 645/* Size of the .interface section. */ 646#define DT_MIPS_INTERFACE_SIZE 0x7000002c 647 648/* Size of rld_text_resolve function stored in the GOT. */ 649#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 650 651/* Default suffix of DSO to be added by rld on dlopen() calls. */ 652#define DT_MIPS_PERF_SUFFIX 0x7000002e 653 654/* Size of compact relocation section (O32). */ 655#define DT_MIPS_COMPACT_SIZE 0x7000002f 656 657/* GP value for auxiliary GOTs. */ 658#define DT_MIPS_GP_VALUE 0x70000030 659 660/* Address of auxiliary .dynamic. */ 661#define DT_MIPS_AUX_DYNAMIC 0x70000031 662 663/* Flags which may appear in a DT_MIPS_FLAGS entry. */ 664 665/* No flags. */ 666#define RHF_NONE 0x00000000 667 668/* Uses shortcut pointers. */ 669#define RHF_QUICKSTART 0x00000001 670 671/* Hash size is not a power of two. */ 672#define RHF_NOTPOT 0x00000002 673 674/* Ignore LD_LIBRARY_PATH. */ 675#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 676 677/* DSO address may not be relocated. */ 678#define RHF_NO_MOVE 0x00000008 679 680/* SGI specific features. */ 681#define RHF_SGI_ONLY 0x00000010 682 683/* Guarantee that .init will finish executing before any non-init 684 code in DSO is called. */ 685#define RHF_GUARANTEE_INIT 0x00000020 686 687/* Contains Delta C++ code. */ 688#define RHF_DELTA_C_PLUS_PLUS 0x00000040 689 690/* Guarantee that .init will start executing before any non-init 691 code in DSO is called. */ 692#define RHF_GUARANTEE_START_INIT 0x00000080 693 694/* Generated by pixie. */ 695#define RHF_PIXIE 0x00000100 696 697/* Delay-load DSO by default. */ 698#define RHF_DEFAULT_DELAY_LOAD 0x00000200 699 700/* Object may be requickstarted */ 701#define RHF_REQUICKSTART 0x00000400 702 703/* Object has been requickstarted */ 704#define RHF_REQUICKSTARTED 0x00000800 705 706/* Generated by cord. */ 707#define RHF_CORD 0x00001000 708 709/* Object contains no unresolved undef symbols. */ 710#define RHF_NO_UNRES_UNDEF 0x00002000 711 712/* Symbol table is in a safe order. */ 713#define RHF_RLD_ORDER_SAFE 0x00004000 714 715/* Special values for the st_other field in the symbol table. These 716 are used in an Irix 5 dynamic symbol table. */ 717 718#define STO_DEFAULT STV_DEFAULT 719#define STO_INTERNAL STV_INTERNAL 720#define STO_HIDDEN STV_HIDDEN 721#define STO_PROTECTED STV_PROTECTED 722 723/* This value is used for a mips16 .text symbol. */ 724#define STO_MIPS16 0xf0 725 726/* This bit is used on Irix to indicate a symbol whose definition 727 is optional - if, at final link time, it cannot be found, no 728 error message should be produced. */ 729#define STO_OPTIONAL (1 << 2) 730/* A macro to examine the STO_OPTIONAL bit. */ 731#define ELF_MIPS_IS_OPTIONAL(other) ((other) & STO_OPTIONAL) 732 733/* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 734 relocation entry specifies up to three actual relocations, all at 735 the same address. The first relocation which required a symbol 736 uses the symbol in the r_sym field. The second relocation which 737 requires a symbol uses the symbol in the r_ssym field. If all 738 three relocations require a symbol, the third one uses a zero 739 value. */ 740 741/* An entry in a 64 bit SHT_REL section. */ 742 743typedef struct 744{ 745 /* Address of relocation. */ 746 unsigned char r_offset[8]; 747 /* Symbol index. */ 748 unsigned char r_sym[4]; 749 /* Special symbol. */ 750 unsigned char r_ssym[1]; 751 /* Third relocation. */ 752 unsigned char r_type3[1]; 753 /* Second relocation. */ 754 unsigned char r_type2[1]; 755 /* First relocation. */ 756 unsigned char r_type[1]; 757} Elf64_Mips_External_Rel; 758 759typedef struct 760{ 761 /* Address of relocation. */ 762 bfd_vma r_offset; 763 /* Symbol index. */ 764 unsigned long r_sym; 765 /* Special symbol. */ 766 unsigned char r_ssym; 767 /* Third relocation. */ 768 unsigned char r_type3; 769 /* Second relocation. */ 770 unsigned char r_type2; 771 /* First relocation. */ 772 unsigned char r_type; 773} Elf64_Mips_Internal_Rel; 774 775/* An entry in a 64 bit SHT_RELA section. */ 776 777typedef struct 778{ 779 /* Address of relocation. */ 780 unsigned char r_offset[8]; 781 /* Symbol index. */ 782 unsigned char r_sym[4]; 783 /* Special symbol. */ 784 unsigned char r_ssym[1]; 785 /* Third relocation. */ 786 unsigned char r_type3[1]; 787 /* Second relocation. */ 788 unsigned char r_type2[1]; 789 /* First relocation. */ 790 unsigned char r_type[1]; 791 /* Addend. */ 792 unsigned char r_addend[8]; 793} Elf64_Mips_External_Rela; 794 795typedef struct 796{ 797 /* Address of relocation. */ 798 bfd_vma r_offset; 799 /* Symbol index. */ 800 unsigned long r_sym; 801 /* Special symbol. */ 802 unsigned char r_ssym; 803 /* Third relocation. */ 804 unsigned char r_type3; 805 /* Second relocation. */ 806 unsigned char r_type2; 807 /* First relocation. */ 808 unsigned char r_type; 809 /* Addend. */ 810 bfd_signed_vma r_addend; 811} Elf64_Mips_Internal_Rela; 812 813/* MIPS ELF 64 relocation info access macros. */ 814#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 815#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 816#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 817#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 818 819/* Values found in the r_ssym field of a relocation entry. */ 820 821/* No relocation. */ 822#define RSS_UNDEF 0 823 824/* Value of GP. */ 825#define RSS_GP 1 826 827/* Value of GP in object being relocated. */ 828#define RSS_GP0 2 829 830/* Address of location being relocated. */ 831#define RSS_LOC 3 832 833/* A SHT_MIPS_OPTIONS section contains a series of options, each of 834 which starts with this header. */ 835 836typedef struct 837{ 838 /* Type of option. */ 839 unsigned char kind[1]; 840 /* Size of option descriptor, including header. */ 841 unsigned char size[1]; 842 /* Section index of affected section, or 0 for global option. */ 843 unsigned char section[2]; 844 /* Information specific to this kind of option. */ 845 unsigned char info[4]; 846} Elf_External_Options; 847 848typedef struct 849{ 850 /* Type of option. */ 851 unsigned char kind; 852 /* Size of option descriptor, including header. */ 853 unsigned char size; 854 /* Section index of affected section, or 0 for global option. */ 855 unsigned short section; 856 /* Information specific to this kind of option. */ 857 unsigned long info; 858} Elf_Internal_Options; 859 860/* MIPS ELF option header swapping routines. */ 861extern void bfd_mips_elf_swap_options_in 862 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 863extern void bfd_mips_elf_swap_options_out 864 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 865 866/* Values which may appear in the kind field of an Elf_Options 867 structure. */ 868 869/* Undefined. */ 870#define ODK_NULL 0 871 872/* Register usage and GP value. */ 873#define ODK_REGINFO 1 874 875/* Exception processing information. */ 876#define ODK_EXCEPTIONS 2 877 878/* Section padding information. */ 879#define ODK_PAD 3 880 881/* Hardware workarounds performed. */ 882#define ODK_HWPATCH 4 883 884/* Fill value used by the linker. */ 885#define ODK_FILL 5 886 887/* Reserved space for desktop tools. */ 888#define ODK_TAGS 6 889 890/* Hardware workarounds, AND bits when merging. */ 891#define ODK_HWAND 7 892 893/* Hardware workarounds, OR bits when merging. */ 894#define ODK_HWOR 8 895 896/* GP group to use for text/data sections. */ 897#define ODK_GP_GROUP 9 898 899/* ID information. */ 900#define ODK_IDENT 10 901 902/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 903 structure. In the 64 bit ABI, it is the following structure. The 904 info field of the options header is not used. */ 905 906typedef struct 907{ 908 /* Mask of general purpose registers used. */ 909 unsigned char ri_gprmask[4]; 910 /* Padding. */ 911 unsigned char ri_pad[4]; 912 /* Mask of co-processor registers used. */ 913 unsigned char ri_cprmask[4][4]; 914 /* GP register value for this object file. */ 915 unsigned char ri_gp_value[8]; 916} Elf64_External_RegInfo; 917 918typedef struct 919{ 920 /* Mask of general purpose registers used. */ 921 unsigned long ri_gprmask; 922 /* Padding. */ 923 unsigned long ri_pad; 924 /* Mask of co-processor registers used. */ 925 unsigned long ri_cprmask[4]; 926 /* GP register value for this object file. */ 927 bfd_vma ri_gp_value; 928} Elf64_Internal_RegInfo; 929 930typedef struct 931{ 932 /* The hash value computed from the name of the corresponding 933 dynamic symbol. */ 934 unsigned char ms_hash_value[4]; 935 /* Contains both the dynamic relocation index and the symbol flags 936 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 937 to access the individual values. The dynamic relocation index 938 identifies the first entry in the .rel.dyn section that 939 references the dynamic symbol corresponding to this msym entry. 940 If the index is 0, no dynamic relocations are associated with the 941 symbol. The symbol flags field is reserved for future use. */ 942 unsigned char ms_info[4]; 943} Elf32_External_Msym; 944 945typedef struct 946{ 947 /* The hash value computed from the name of the corresponding 948 dynamic symbol. */ 949 unsigned long ms_hash_value; 950 /* Contains both the dynamic relocation index and the symbol flags 951 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 952 to access the individual values. The dynamic relocation index 953 identifies the first entry in the .rel.dyn section that 954 references the dynamic symbol corresponding to this msym entry. 955 If the index is 0, no dynamic relocations are associated with the 956 symbol. The symbol flags field is reserved for future use. */ 957 unsigned long ms_info; 958} Elf32_Internal_Msym; 959 960#define ELF32_MS_REL_INDEX(i) ((i) >> 8) 961#define ELF32_MS_FLAGS(i) (i) & 0xff) 962#define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 963 964/* MIPS ELF reginfo swapping routines. */ 965extern void bfd_mips_elf64_swap_reginfo_in 966 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 967extern void bfd_mips_elf64_swap_reginfo_out 968 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 969 970/* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 971#define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 972#define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 973#define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 974#define OEX_SMM 0x20000 /* Force sequential memory mode. */ 975#define OEX_FPDBUG 0x40000 /* Force precise floating-point 976 exceptions (debug mode). */ 977#define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 978 979/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 980#define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 981#define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 982#define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 983#define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 984#define OEX_FPU_INEX 0x01 /* Inexact exception. */ 985 986/* Masks for the info word of an ODK_PAD descriptor. */ 987#define OPAD_PREFIX 0x01 988#define OPAD_POSTFIX 0x02 989#define OPAD_SYMBOL 0x04 990 991/* Masks for the info word of an ODK_HWPATCH descriptor. */ 992#define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 993#define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 994#define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 995#define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 996 (clean == 1). */ 997#define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 998 load patch. */ 999 1000/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 1001#define OGP_GROUP 0x0000ffff /* GP group number. */ 1002#define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 1003 1004/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 1005#define OHWA0_R4KEOP_CHECKED 0x00000001 1006#define OHWA0_R4KEOP_CLEAN 0x00000002 1007 1008 1009#endif /* _ELF_MIPS_H */ 1010