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