1/* MIPS ELF support for BFD. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003 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 9This file is part of BFD, the Binary File Descriptor library. 10 11This program is free software; you can redistribute it and/or modify 12it under the terms of the GNU General Public License as published by 13the Free Software Foundation; either version 2 of the License, or 14(at your option) any later version. 15 16This program is distributed in the hope that it will be useful, 17but WITHOUT ANY WARRANTY; without even the implied warranty of 18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19GNU General Public License for more details. 20 21You should have received a copy of the GNU General Public License 22along with this program; if not, write to the Free Software 23Foundation, 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. */ 34START_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) 88END_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/* -mips64r2 code. */ 155#define E_MIPS_ARCH_64R2 0x80000000 156 157/* The ABI of the file. Also see EF_MIPS_ABI2 above. */ 158#define EF_MIPS_ABI 0x0000F000 159 160/* The original o32 abi. */ 161#define E_MIPS_ABI_O32 0x00001000 162 163/* O32 extended to work on 64 bit architectures */ 164#define E_MIPS_ABI_O64 0x00002000 165 166/* EABI in 32 bit mode */ 167#define E_MIPS_ABI_EABI32 0x00003000 168 169/* EABI in 64 bit mode */ 170#define E_MIPS_ABI_EABI64 0x00004000 171 172 173/* Machine variant if we know it. This field was invented at Cygnus, 174 but it is hoped that other vendors will adopt it. If some standard 175 is developed, this code should be changed to follow it. */ 176 177#define EF_MIPS_MACH 0x00FF0000 178 179/* Cygnus is choosing values between 80 and 9F; 180 00 - 7F should be left for a future standard; 181 the rest are open. */ 182 183#define E_MIPS_MACH_3900 0x00810000 184#define E_MIPS_MACH_4010 0x00820000 185#define E_MIPS_MACH_4100 0x00830000 186#define E_MIPS_MACH_4650 0x00850000 187#define E_MIPS_MACH_4120 0x00870000 188#define E_MIPS_MACH_4111 0x00880000 189#define E_MIPS_MACH_SB1 0x008a0000 190#define E_MIPS_MACH_5400 0x00910000 191#define E_MIPS_MACH_5500 0x00980000 192 193/* Processor specific section indices. These sections do not actually 194 exist. Symbols with a st_shndx field corresponding to one of these 195 values have a special meaning. */ 196 197/* Defined and allocated common symbol. Value is virtual address. If 198 relocated, alignment must be preserved. */ 199#define SHN_MIPS_ACOMMON 0xff00 200 201/* Defined and allocated text symbol. Value is virtual address. 202 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 203#define SHN_MIPS_TEXT 0xff01 204 205/* Defined and allocated data symbol. Value is virtual address. 206 Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */ 207#define SHN_MIPS_DATA 0xff02 208 209/* Small common symbol. */ 210#define SHN_MIPS_SCOMMON 0xff03 211 212/* Small undefined symbol. */ 213#define SHN_MIPS_SUNDEFINED 0xff04 214 215/* Processor specific section types. */ 216 217/* Section contains the set of dynamic shared objects used when 218 statically linking. */ 219#define SHT_MIPS_LIBLIST 0x70000000 220 221/* I'm not sure what this is, but it's used on Irix 5. */ 222#define SHT_MIPS_MSYM 0x70000001 223 224/* Section contains list of symbols whose definitions conflict with 225 symbols defined in shared objects. */ 226#define SHT_MIPS_CONFLICT 0x70000002 227 228/* Section contains the global pointer table. */ 229#define SHT_MIPS_GPTAB 0x70000003 230 231/* Section contains microcode information. The exact format is 232 unspecified. */ 233#define SHT_MIPS_UCODE 0x70000004 234 235/* Section contains some sort of debugging information. The exact 236 format is unspecified. It's probably ECOFF symbols. */ 237#define SHT_MIPS_DEBUG 0x70000005 238 239/* Section contains register usage information. */ 240#define SHT_MIPS_REGINFO 0x70000006 241 242/* ??? */ 243#define SHT_MIPS_PACKAGE 0x70000007 244 245/* ??? */ 246#define SHT_MIPS_PACKSYM 0x70000008 247 248/* ??? */ 249#define SHT_MIPS_RELD 0x70000009 250 251/* Section contains interface information. */ 252#define SHT_MIPS_IFACE 0x7000000b 253 254/* Section contains description of contents of another section. */ 255#define SHT_MIPS_CONTENT 0x7000000c 256 257/* Section contains miscellaneous options. */ 258#define SHT_MIPS_OPTIONS 0x7000000d 259 260/* ??? */ 261#define SHT_MIPS_SHDR 0x70000010 262 263/* ??? */ 264#define SHT_MIPS_FDESC 0x70000011 265 266/* ??? */ 267#define SHT_MIPS_EXTSYM 0x70000012 268 269/* ??? */ 270#define SHT_MIPS_DENSE 0x70000013 271 272/* ??? */ 273#define SHT_MIPS_PDESC 0x70000014 274 275/* ??? */ 276#define SHT_MIPS_LOCSYM 0x70000015 277 278/* ??? */ 279#define SHT_MIPS_AUXSYM 0x70000016 280 281/* ??? */ 282#define SHT_MIPS_OPTSYM 0x70000017 283 284/* ??? */ 285#define SHT_MIPS_LOCSTR 0x70000018 286 287/* ??? */ 288#define SHT_MIPS_LINE 0x70000019 289 290/* ??? */ 291#define SHT_MIPS_RFDESC 0x7000001a 292 293/* Delta C++: symbol table */ 294#define SHT_MIPS_DELTASYM 0x7000001b 295 296/* Delta C++: instance table */ 297#define SHT_MIPS_DELTAINST 0x7000001c 298 299/* Delta C++: class table */ 300#define SHT_MIPS_DELTACLASS 0x7000001d 301 302/* DWARF debugging section. */ 303#define SHT_MIPS_DWARF 0x7000001e 304 305/* Delta C++: declarations */ 306#define SHT_MIPS_DELTADECL 0x7000001f 307 308/* List of libraries the binary depends on. Includes a time stamp, version 309 number. */ 310#define SHT_MIPS_SYMBOL_LIB 0x70000020 311 312/* Events section. */ 313#define SHT_MIPS_EVENTS 0x70000021 314 315/* ??? */ 316#define SHT_MIPS_TRANSLATE 0x70000022 317 318/* Special pixie sections */ 319#define SHT_MIPS_PIXIE 0x70000023 320 321/* Address translation table (for debug info) */ 322#define SHT_MIPS_XLATE 0x70000024 323 324/* SGI internal address translation table (for debug info) */ 325#define SHT_MIPS_XLATE_DEBUG 0x70000025 326 327/* Intermediate code */ 328#define SHT_MIPS_WHIRL 0x70000026 329 330/* C++ exception handling region info */ 331#define SHT_MIPS_EH_REGION 0x70000027 332 333/* Obsolete address translation table (for debug info) */ 334#define SHT_MIPS_XLATE_OLD 0x70000028 335 336/* Runtime procedure descriptor table exception information (ucode) ??? */ 337#define SHT_MIPS_PDR_EXCEPTION 0x70000029 338 339 340/* A section of type SHT_MIPS_LIBLIST contains an array of the 341 following structure. The sh_link field is the section index of the 342 string table. The sh_info field is the number of entries in the 343 section. */ 344typedef struct 345{ 346 /* String table index for name of shared object. */ 347 unsigned long l_name; 348 /* Time stamp. */ 349 unsigned long l_time_stamp; 350 /* Checksum of symbol names and common sizes. */ 351 unsigned long l_checksum; 352 /* String table index for version. */ 353 unsigned long l_version; 354 /* Flags. */ 355 unsigned long l_flags; 356} Elf32_Lib; 357 358/* The external version of Elf32_Lib. */ 359typedef struct 360{ 361 unsigned char l_name[4]; 362 unsigned char l_time_stamp[4]; 363 unsigned char l_checksum[4]; 364 unsigned char l_version[4]; 365 unsigned char l_flags[4]; 366} Elf32_External_Lib; 367 368/* The l_flags field of an Elf32_Lib structure may contain the 369 following flags. */ 370 371/* Require an exact match at runtime. */ 372#define LL_EXACT_MATCH 0x00000001 373 374/* Ignore version incompatibilities at runtime. */ 375#define LL_IGNORE_INT_VER 0x00000002 376 377/* Require matching minor version number. */ 378#define LL_REQUIRE_MINOR 0x00000004 379 380/* ??? */ 381#define LL_EXPORTS 0x00000008 382 383/* Delay loading of this library until really needed. */ 384#define LL_DELAY_LOAD 0x00000010 385 386/* ??? Delta C++ stuff ??? */ 387#define LL_DELTA 0x00000020 388 389 390/* A section of type SHT_MIPS_CONFLICT is an array of indices into the 391 .dynsym section. Each element has the following type. */ 392typedef unsigned long Elf32_Conflict; 393typedef unsigned char Elf32_External_Conflict[4]; 394 395typedef unsigned long Elf64_Conflict; 396typedef unsigned char Elf64_External_Conflict[8]; 397 398/* A section of type SHT_MIPS_GPTAB contains information about how 399 much GP space would be required for different -G arguments. This 400 information is only used so that the linker can provide informative 401 suggestions as to the best -G value to use. The sh_info field is 402 the index of the section for which this information applies. The 403 contents of the section are an array of the following union. The 404 first element uses the gt_header field. The remaining elements use 405 the gt_entry field. */ 406typedef union 407{ 408 struct 409 { 410 /* -G value actually used for this object file. */ 411 unsigned long gt_current_g_value; 412 /* Unused. */ 413 unsigned long gt_unused; 414 } gt_header; 415 struct 416 { 417 /* If this -G argument has been used... */ 418 unsigned long gt_g_value; 419 /* ...this many GP section bytes would be required. */ 420 unsigned long gt_bytes; 421 } gt_entry; 422} Elf32_gptab; 423 424/* The external version of Elf32_gptab. */ 425 426typedef union 427{ 428 struct 429 { 430 unsigned char gt_current_g_value[4]; 431 unsigned char gt_unused[4]; 432 } gt_header; 433 struct 434 { 435 unsigned char gt_g_value[4]; 436 unsigned char gt_bytes[4]; 437 } gt_entry; 438} Elf32_External_gptab; 439 440/* A section of type SHT_MIPS_REGINFO contains the following 441 structure. */ 442typedef struct 443{ 444 /* Mask of general purpose registers used. */ 445 unsigned long ri_gprmask; 446 /* Mask of co-processor registers used. */ 447 unsigned long ri_cprmask[4]; 448 /* GP register value for this object file. */ 449 long ri_gp_value; 450} Elf32_RegInfo; 451 452/* The external version of the Elf_RegInfo structure. */ 453typedef struct 454{ 455 unsigned char ri_gprmask[4]; 456 unsigned char ri_cprmask[4][4]; 457 unsigned char ri_gp_value[4]; 458} Elf32_External_RegInfo; 459 460/* MIPS ELF .reginfo swapping routines. */ 461extern void bfd_mips_elf32_swap_reginfo_in 462 (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *); 463extern void bfd_mips_elf32_swap_reginfo_out 464 (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *); 465 466/* Processor specific section flags. */ 467 468/* This section must be in the global data area. */ 469#define SHF_MIPS_GPREL 0x10000000 470 471/* This section should be merged. */ 472#define SHF_MIPS_MERGE 0x20000000 473 474/* This section contains address data of size implied by section 475 element size. */ 476#define SHF_MIPS_ADDR 0x40000000 477 478/* This section contains string data. */ 479#define SHF_MIPS_STRING 0x80000000 480 481/* This section may not be stripped. */ 482#define SHF_MIPS_NOSTRIP 0x08000000 483 484/* This section is local to threads. */ 485#define SHF_MIPS_LOCAL 0x04000000 486 487/* Linker should generate implicit weak names for this section. */ 488#define SHF_MIPS_NAMES 0x02000000 489 490/* Section contais text/data which may be replicated in other sections. 491 Linker should retain only one copy. */ 492#define SHF_MIPS_NODUPES 0x01000000 493 494/* Processor specific program header types. */ 495 496/* Register usage information. Identifies one .reginfo section. */ 497#define PT_MIPS_REGINFO 0x70000000 498 499/* Runtime procedure table. */ 500#define PT_MIPS_RTPROC 0x70000001 501 502/* .MIPS.options section. */ 503#define PT_MIPS_OPTIONS 0x70000002 504 505/* Processor specific dynamic array tags. */ 506 507/* 32 bit version number for runtime linker interface. */ 508#define DT_MIPS_RLD_VERSION 0x70000001 509 510/* Time stamp. */ 511#define DT_MIPS_TIME_STAMP 0x70000002 512 513/* Checksum of external strings and common sizes. */ 514#define DT_MIPS_ICHECKSUM 0x70000003 515 516/* Index of version string in string table. */ 517#define DT_MIPS_IVERSION 0x70000004 518 519/* 32 bits of flags. */ 520#define DT_MIPS_FLAGS 0x70000005 521 522/* Base address of the segment. */ 523#define DT_MIPS_BASE_ADDRESS 0x70000006 524 525/* ??? */ 526#define DT_MIPS_MSYM 0x70000007 527 528/* Address of .conflict section. */ 529#define DT_MIPS_CONFLICT 0x70000008 530 531/* Address of .liblist section. */ 532#define DT_MIPS_LIBLIST 0x70000009 533 534/* Number of local global offset table entries. */ 535#define DT_MIPS_LOCAL_GOTNO 0x7000000a 536 537/* Number of entries in the .conflict section. */ 538#define DT_MIPS_CONFLICTNO 0x7000000b 539 540/* Number of entries in the .liblist section. */ 541#define DT_MIPS_LIBLISTNO 0x70000010 542 543/* Number of entries in the .dynsym section. */ 544#define DT_MIPS_SYMTABNO 0x70000011 545 546/* Index of first external dynamic symbol not referenced locally. */ 547#define DT_MIPS_UNREFEXTNO 0x70000012 548 549/* Index of first dynamic symbol in global offset table. */ 550#define DT_MIPS_GOTSYM 0x70000013 551 552/* Number of page table entries in global offset table. */ 553#define DT_MIPS_HIPAGENO 0x70000014 554 555/* Address of run time loader map, used for debugging. */ 556#define DT_MIPS_RLD_MAP 0x70000016 557 558/* Delta C++ class definition. */ 559#define DT_MIPS_DELTA_CLASS 0x70000017 560 561/* Number of entries in DT_MIPS_DELTA_CLASS. */ 562#define DT_MIPS_DELTA_CLASS_NO 0x70000018 563 564/* Delta C++ class instances. */ 565#define DT_MIPS_DELTA_INSTANCE 0x70000019 566 567/* Number of entries in DT_MIPS_DELTA_INSTANCE. */ 568#define DT_MIPS_DELTA_INSTANCE_NO 0x7000001a 569 570/* Delta relocations. */ 571#define DT_MIPS_DELTA_RELOC 0x7000001b 572 573/* Number of entries in DT_MIPS_DELTA_RELOC. */ 574#define DT_MIPS_DELTA_RELOC_NO 0x7000001c 575 576/* Delta symbols that Delta relocations refer to. */ 577#define DT_MIPS_DELTA_SYM 0x7000001d 578 579/* Number of entries in DT_MIPS_DELTA_SYM. */ 580#define DT_MIPS_DELTA_SYM_NO 0x7000001e 581 582/* Delta symbols that hold class declarations. */ 583#define DT_MIPS_DELTA_CLASSSYM 0x70000020 584 585/* Number of entries in DT_MIPS_DELTA_CLASSSYM. */ 586#define DT_MIPS_DELTA_CLASSSYM_NO 0x70000021 587 588/* Flags indicating information about C++ flavor. */ 589#define DT_MIPS_CXX_FLAGS 0x70000022 590 591/* Pixie information (???). */ 592#define DT_MIPS_PIXIE_INIT 0x70000023 593 594/* Address of .MIPS.symlib */ 595#define DT_MIPS_SYMBOL_LIB 0x70000024 596 597/* The GOT index of the first PTE for a segment */ 598#define DT_MIPS_LOCALPAGE_GOTIDX 0x70000025 599 600/* The GOT index of the first PTE for a local symbol */ 601#define DT_MIPS_LOCAL_GOTIDX 0x70000026 602 603/* The GOT index of the first PTE for a hidden symbol */ 604#define DT_MIPS_HIDDEN_GOTIDX 0x70000027 605 606/* The GOT index of the first PTE for a protected symbol */ 607#define DT_MIPS_PROTECTED_GOTIDX 0x70000028 608 609/* Address of `.MIPS.options'. */ 610#define DT_MIPS_OPTIONS 0x70000029 611 612/* Address of `.interface'. */ 613#define DT_MIPS_INTERFACE 0x7000002a 614 615/* ??? */ 616#define DT_MIPS_DYNSTR_ALIGN 0x7000002b 617 618/* Size of the .interface section. */ 619#define DT_MIPS_INTERFACE_SIZE 0x7000002c 620 621/* Size of rld_text_resolve function stored in the GOT. */ 622#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR 0x7000002d 623 624/* Default suffix of DSO to be added by rld on dlopen() calls. */ 625#define DT_MIPS_PERF_SUFFIX 0x7000002e 626 627/* Size of compact relocation section (O32). */ 628#define DT_MIPS_COMPACT_SIZE 0x7000002f 629 630/* GP value for auxiliary GOTs. */ 631#define DT_MIPS_GP_VALUE 0x70000030 632 633/* Address of auxiliary .dynamic. */ 634#define DT_MIPS_AUX_DYNAMIC 0x70000031 635 636/* Relative address of run time loader map, used for debugging. */ 637#define DT_MIPS_RLD_MAP_REL 0x70000035 638 639/* Flags which may appear in a DT_MIPS_FLAGS entry. */ 640 641/* No flags. */ 642#define RHF_NONE 0x00000000 643 644/* Uses shortcut pointers. */ 645#define RHF_QUICKSTART 0x00000001 646 647/* Hash size is not a power of two. */ 648#define RHF_NOTPOT 0x00000002 649 650/* Ignore LD_LIBRARY_PATH. */ 651#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004 652 653/* DSO address may not be relocated. */ 654#define RHF_NO_MOVE 0x00000008 655 656/* SGI specific features. */ 657#define RHF_SGI_ONLY 0x00000010 658 659/* Guarantee that .init will finish executing before any non-init 660 code in DSO is called. */ 661#define RHF_GUARANTEE_INIT 0x00000020 662 663/* Contains Delta C++ code. */ 664#define RHF_DELTA_C_PLUS_PLUS 0x00000040 665 666/* Guarantee that .init will start executing before any non-init 667 code in DSO is called. */ 668#define RHF_GUARANTEE_START_INIT 0x00000080 669 670/* Generated by pixie. */ 671#define RHF_PIXIE 0x00000100 672 673/* Delay-load DSO by default. */ 674#define RHF_DEFAULT_DELAY_LOAD 0x00000200 675 676/* Object may be requickstarted */ 677#define RHF_REQUICKSTART 0x00000400 678 679/* Object has been requickstarted */ 680#define RHF_REQUICKSTARTED 0x00000800 681 682/* Generated by cord. */ 683#define RHF_CORD 0x00001000 684 685/* Object contains no unresolved undef symbols. */ 686#define RHF_NO_UNRES_UNDEF 0x00002000 687 688/* Symbol table is in a safe order. */ 689#define RHF_RLD_ORDER_SAFE 0x00004000 690 691/* Special values for the st_other field in the symbol table. These 692 are used in an Irix 5 dynamic symbol table. */ 693 694#define STO_DEFAULT STV_DEFAULT 695#define STO_INTERNAL STV_INTERNAL 696#define STO_HIDDEN STV_HIDDEN 697#define STO_PROTECTED STV_PROTECTED 698 699/* This value is used for a mips16 .text symbol. */ 700#define STO_MIPS16 0xf0 701 702/* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each 703 relocation entry specifies up to three actual relocations, all at 704 the same address. The first relocation which required a symbol 705 uses the symbol in the r_sym field. The second relocation which 706 requires a symbol uses the symbol in the r_ssym field. If all 707 three relocations require a symbol, the third one uses a zero 708 value. */ 709 710/* An entry in a 64 bit SHT_REL section. */ 711 712typedef struct 713{ 714 /* Address of relocation. */ 715 unsigned char r_offset[8]; 716 /* Symbol index. */ 717 unsigned char r_sym[4]; 718 /* Special symbol. */ 719 unsigned char r_ssym[1]; 720 /* Third relocation. */ 721 unsigned char r_type3[1]; 722 /* Second relocation. */ 723 unsigned char r_type2[1]; 724 /* First relocation. */ 725 unsigned char r_type[1]; 726} Elf64_Mips_External_Rel; 727 728typedef struct 729{ 730 /* Address of relocation. */ 731 bfd_vma r_offset; 732 /* Symbol index. */ 733 unsigned long r_sym; 734 /* Special symbol. */ 735 unsigned char r_ssym; 736 /* Third relocation. */ 737 unsigned char r_type3; 738 /* Second relocation. */ 739 unsigned char r_type2; 740 /* First relocation. */ 741 unsigned char r_type; 742} Elf64_Mips_Internal_Rel; 743 744/* An entry in a 64 bit SHT_RELA section. */ 745 746typedef struct 747{ 748 /* Address of relocation. */ 749 unsigned char r_offset[8]; 750 /* Symbol index. */ 751 unsigned char r_sym[4]; 752 /* Special symbol. */ 753 unsigned char r_ssym[1]; 754 /* Third relocation. */ 755 unsigned char r_type3[1]; 756 /* Second relocation. */ 757 unsigned char r_type2[1]; 758 /* First relocation. */ 759 unsigned char r_type[1]; 760 /* Addend. */ 761 unsigned char r_addend[8]; 762} Elf64_Mips_External_Rela; 763 764typedef struct 765{ 766 /* Address of relocation. */ 767 bfd_vma r_offset; 768 /* Symbol index. */ 769 unsigned long r_sym; 770 /* Special symbol. */ 771 unsigned char r_ssym; 772 /* Third relocation. */ 773 unsigned char r_type3; 774 /* Second relocation. */ 775 unsigned char r_type2; 776 /* First relocation. */ 777 unsigned char r_type; 778 /* Addend. */ 779 bfd_signed_vma r_addend; 780} Elf64_Mips_Internal_Rela; 781 782/* MIPS ELF 64 relocation info access macros. */ 783#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff) 784#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff) 785#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff) 786#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff) 787 788/* Values found in the r_ssym field of a relocation entry. */ 789 790/* No relocation. */ 791#define RSS_UNDEF 0 792 793/* Value of GP. */ 794#define RSS_GP 1 795 796/* Value of GP in object being relocated. */ 797#define RSS_GP0 2 798 799/* Address of location being relocated. */ 800#define RSS_LOC 3 801 802/* A SHT_MIPS_OPTIONS section contains a series of options, each of 803 which starts with this header. */ 804 805typedef struct 806{ 807 /* Type of option. */ 808 unsigned char kind[1]; 809 /* Size of option descriptor, including header. */ 810 unsigned char size[1]; 811 /* Section index of affected section, or 0 for global option. */ 812 unsigned char section[2]; 813 /* Information specific to this kind of option. */ 814 unsigned char info[4]; 815} Elf_External_Options; 816 817typedef struct 818{ 819 /* Type of option. */ 820 unsigned char kind; 821 /* Size of option descriptor, including header. */ 822 unsigned char size; 823 /* Section index of affected section, or 0 for global option. */ 824 unsigned short section; 825 /* Information specific to this kind of option. */ 826 unsigned long info; 827} Elf_Internal_Options; 828 829/* MIPS ELF option header swapping routines. */ 830extern void bfd_mips_elf_swap_options_in 831 (bfd *, const Elf_External_Options *, Elf_Internal_Options *); 832extern void bfd_mips_elf_swap_options_out 833 (bfd *, const Elf_Internal_Options *, Elf_External_Options *); 834 835/* Values which may appear in the kind field of an Elf_Options 836 structure. */ 837 838/* Undefined. */ 839#define ODK_NULL 0 840 841/* Register usage and GP value. */ 842#define ODK_REGINFO 1 843 844/* Exception processing information. */ 845#define ODK_EXCEPTIONS 2 846 847/* Section padding information. */ 848#define ODK_PAD 3 849 850/* Hardware workarounds performed. */ 851#define ODK_HWPATCH 4 852 853/* Fill value used by the linker. */ 854#define ODK_FILL 5 855 856/* Reserved space for desktop tools. */ 857#define ODK_TAGS 6 858 859/* Hardware workarounds, AND bits when merging. */ 860#define ODK_HWAND 7 861 862/* Hardware workarounds, OR bits when merging. */ 863#define ODK_HWOR 8 864 865/* GP group to use for text/data sections. */ 866#define ODK_GP_GROUP 9 867 868/* ID information. */ 869#define ODK_IDENT 10 870 871/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo 872 structure. In the 64 bit ABI, it is the following structure. The 873 info field of the options header is not used. */ 874 875typedef struct 876{ 877 /* Mask of general purpose registers used. */ 878 unsigned char ri_gprmask[4]; 879 /* Padding. */ 880 unsigned char ri_pad[4]; 881 /* Mask of co-processor registers used. */ 882 unsigned char ri_cprmask[4][4]; 883 /* GP register value for this object file. */ 884 unsigned char ri_gp_value[8]; 885} Elf64_External_RegInfo; 886 887typedef struct 888{ 889 /* Mask of general purpose registers used. */ 890 unsigned long ri_gprmask; 891 /* Padding. */ 892 unsigned long ri_pad; 893 /* Mask of co-processor registers used. */ 894 unsigned long ri_cprmask[4]; 895 /* GP register value for this object file. */ 896 bfd_vma ri_gp_value; 897} Elf64_Internal_RegInfo; 898 899typedef struct 900{ 901 /* The hash value computed from the name of the corresponding 902 dynamic symbol. */ 903 unsigned char ms_hash_value[4]; 904 /* Contains both the dynamic relocation index and the symbol flags 905 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 906 to access the individual values. The dynamic relocation index 907 identifies the first entry in the .rel.dyn section that 908 references the dynamic symbol corresponding to this msym entry. 909 If the index is 0, no dynamic relocations are associated with the 910 symbol. The symbol flags field is reserved for future use. */ 911 unsigned char ms_info[4]; 912} Elf32_External_Msym; 913 914typedef struct 915{ 916 /* The hash value computed from the name of the corresponding 917 dynamic symbol. */ 918 unsigned long ms_hash_value; 919 /* Contains both the dynamic relocation index and the symbol flags 920 field. The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used 921 to access the individual values. The dynamic relocation index 922 identifies the first entry in the .rel.dyn section that 923 references the dynamic symbol corresponding to this msym entry. 924 If the index is 0, no dynamic relocations are associated with the 925 symbol. The symbol flags field is reserved for future use. */ 926 unsigned long ms_info; 927} Elf32_Internal_Msym; 928 929#define ELF32_MS_REL_INDEX(i) ((i) >> 8) 930#define ELF32_MS_FLAGS(i) (i) & 0xff) 931#define ELF32_MS_INFO(r, f) (((r) << 8) + ((f) & 0xff)) 932 933/* MIPS ELF reginfo swapping routines. */ 934extern void bfd_mips_elf64_swap_reginfo_in 935 (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *); 936extern void bfd_mips_elf64_swap_reginfo_out 937 (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *); 938 939/* Masks for the info work of an ODK_EXCEPTIONS descriptor. */ 940#define OEX_FPU_MIN 0x1f /* FPEs which must be enabled. */ 941#define OEX_FPU_MAX 0x1f00 /* FPEs which may be enabled. */ 942#define OEX_PAGE0 0x10000 /* Page zero must be mapped. */ 943#define OEX_SMM 0x20000 /* Force sequential memory mode. */ 944#define OEX_FPDBUG 0x40000 /* Force precise floating-point 945 exceptions (debug mode). */ 946#define OEX_DISMISS 0x80000 /* Dismiss invalid address faults. */ 947 948/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX. */ 949#define OEX_FPU_INVAL 0x10 /* Invalid operation exception. */ 950#define OEX_FPU_DIV0 0x08 /* Division by zero exception. */ 951#define OEX_FPU_OFLO 0x04 /* Overflow exception. */ 952#define OEX_FPU_UFLO 0x02 /* Underflow exception. */ 953#define OEX_FPU_INEX 0x01 /* Inexact exception. */ 954 955/* Masks for the info word of an ODK_PAD descriptor. */ 956#define OPAD_PREFIX 0x01 957#define OPAD_POSTFIX 0x02 958#define OPAD_SYMBOL 0x04 959 960/* Masks for the info word of an ODK_HWPATCH descriptor. */ 961#define OHW_R4KEOP 0x00000001 /* R4000 end-of-page patch. */ 962#define OHW_R8KPFETCH 0x00000002 /* May need R8000 prefetch patch. */ 963#define OHW_R5KEOP 0x00000004 /* R5000 end-of-page patch. */ 964#define OHW_R5KCVTL 0x00000008 /* R5000 cvt.[ds].l bug 965 (clean == 1). */ 966#define OHW_R10KLDL 0x00000010 /* Needs R10K misaligned 967 load patch. */ 968 969/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor. */ 970#define OGP_GROUP 0x0000ffff /* GP group number. */ 971#define OGP_SELF 0xffff0000 /* Self-contained GP groups. */ 972 973/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor. */ 974#define OHWA0_R4KEOP_CHECKED 0x00000001 975#define OHWA0_R4KEOP_CLEAN 0x00000002 976 977 978#endif /* _ELF_MIPS_H */ 979