1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Much of this is taken from binutils and GNU libc ... 7 */ 8#ifndef _ASM_ELF_H 9#define _ASM_ELF_H 10 11 12/* ELF header e_flags defines. */ 13/* MIPS architecture level. */ 14#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */ 15#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */ 16#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */ 17#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */ 18#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */ 19#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */ 20#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */ 21#define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32 R2 code. */ 22#define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64 R2 code. */ 23 24/* The ABI of a file. */ 25#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */ 26#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */ 27 28#define PT_MIPS_REGINFO 0x70000000 29#define PT_MIPS_RTPROC 0x70000001 30#define PT_MIPS_OPTIONS 0x70000002 31 32/* Flags in the e_flags field of the header */ 33#define EF_MIPS_NOREORDER 0x00000001 34#define EF_MIPS_PIC 0x00000002 35#define EF_MIPS_CPIC 0x00000004 36#define EF_MIPS_ABI2 0x00000020 37#define EF_MIPS_OPTIONS_FIRST 0x00000080 38#define EF_MIPS_32BITMODE 0x00000100 39#define EF_MIPS_FP64 0x00000200 40#define EF_MIPS_ABI 0x0000f000 41#define EF_MIPS_ARCH 0xf0000000 42 43#define DT_MIPS_RLD_VERSION 0x70000001 44#define DT_MIPS_TIME_STAMP 0x70000002 45#define DT_MIPS_ICHECKSUM 0x70000003 46#define DT_MIPS_IVERSION 0x70000004 47#define DT_MIPS_FLAGS 0x70000005 48 #define RHF_NONE 0x00000000 49 #define RHF_HARDWAY 0x00000001 50 #define RHF_NOTPOT 0x00000002 51 #define RHF_SGI_ONLY 0x00000010 52#define DT_MIPS_BASE_ADDRESS 0x70000006 53#define DT_MIPS_CONFLICT 0x70000008 54#define DT_MIPS_LIBLIST 0x70000009 55#define DT_MIPS_LOCAL_GOTNO 0x7000000a 56#define DT_MIPS_CONFLICTNO 0x7000000b 57#define DT_MIPS_LIBLISTNO 0x70000010 58#define DT_MIPS_SYMTABNO 0x70000011 59#define DT_MIPS_UNREFEXTNO 0x70000012 60#define DT_MIPS_GOTSYM 0x70000013 61#define DT_MIPS_HIPAGENO 0x70000014 62#define DT_MIPS_RLD_MAP 0x70000016 63 64#define R_MIPS_NONE 0 65#define R_MIPS_16 1 66#define R_MIPS_32 2 67#define R_MIPS_REL32 3 68#define R_MIPS_26 4 69#define R_MIPS_HI16 5 70#define R_MIPS_LO16 6 71#define R_MIPS_GPREL16 7 72#define R_MIPS_LITERAL 8 73#define R_MIPS_GOT16 9 74#define R_MIPS_PC16 10 75#define R_MIPS_CALL16 11 76#define R_MIPS_GPREL32 12 77/* The remaining relocs are defined on Irix, although they are not 78 in the MIPS ELF ABI. */ 79#define R_MIPS_UNUSED1 13 80#define R_MIPS_UNUSED2 14 81#define R_MIPS_UNUSED3 15 82#define R_MIPS_SHIFT5 16 83#define R_MIPS_SHIFT6 17 84#define R_MIPS_64 18 85#define R_MIPS_GOT_DISP 19 86#define R_MIPS_GOT_PAGE 20 87#define R_MIPS_GOT_OFST 21 88/* 89 * The following two relocation types are specified in the MIPS ABI 90 * conformance guide version 1.2 but not yet in the psABI. 91 */ 92#define R_MIPS_GOTHI16 22 93#define R_MIPS_GOTLO16 23 94#define R_MIPS_SUB 24 95#define R_MIPS_INSERT_A 25 96#define R_MIPS_INSERT_B 26 97#define R_MIPS_DELETE 27 98#define R_MIPS_HIGHER 28 99#define R_MIPS_HIGHEST 29 100/* 101 * The following two relocation types are specified in the MIPS ABI 102 * conformance guide version 1.2 but not yet in the psABI. 103 */ 104#define R_MIPS_CALLHI16 30 105#define R_MIPS_CALLLO16 31 106/* 107 * This range is reserved for vendor specific relocations. 108 */ 109#define R_MIPS_LOVENDOR 100 110#define R_MIPS_HIVENDOR 127 111 112#define SHN_MIPS_ACCOMON 0xff00 /* Allocated common symbols */ 113#define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */ 114#define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */ 115#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */ 116#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */ 117 118#define SHT_MIPS_LIST 0x70000000 119#define SHT_MIPS_CONFLICT 0x70000002 120#define SHT_MIPS_GPTAB 0x70000003 121#define SHT_MIPS_UCODE 0x70000004 122#define SHT_MIPS_DEBUG 0x70000005 123#define SHT_MIPS_REGINFO 0x70000006 124#define SHT_MIPS_PACKAGE 0x70000007 125#define SHT_MIPS_PACKSYM 0x70000008 126#define SHT_MIPS_RELD 0x70000009 127#define SHT_MIPS_IFACE 0x7000000b 128#define SHT_MIPS_CONTENT 0x7000000c 129#define SHT_MIPS_OPTIONS 0x7000000d 130#define SHT_MIPS_SHDR 0x70000010 131#define SHT_MIPS_FDESC 0x70000011 132#define SHT_MIPS_EXTSYM 0x70000012 133#define SHT_MIPS_DENSE 0x70000013 134#define SHT_MIPS_PDESC 0x70000014 135#define SHT_MIPS_LOCSYM 0x70000015 136#define SHT_MIPS_AUXSYM 0x70000016 137#define SHT_MIPS_OPTSYM 0x70000017 138#define SHT_MIPS_LOCSTR 0x70000018 139#define SHT_MIPS_LINE 0x70000019 140#define SHT_MIPS_RFDESC 0x7000001a 141#define SHT_MIPS_DELTASYM 0x7000001b 142#define SHT_MIPS_DELTAINST 0x7000001c 143#define SHT_MIPS_DELTACLASS 0x7000001d 144#define SHT_MIPS_DWARF 0x7000001e 145#define SHT_MIPS_DELTADECL 0x7000001f 146#define SHT_MIPS_SYMBOL_LIB 0x70000020 147#define SHT_MIPS_EVENTS 0x70000021 148#define SHT_MIPS_TRANSLATE 0x70000022 149#define SHT_MIPS_PIXIE 0x70000023 150#define SHT_MIPS_XLATE 0x70000024 151#define SHT_MIPS_XLATE_DEBUG 0x70000025 152#define SHT_MIPS_WHIRL 0x70000026 153#define SHT_MIPS_EH_REGION 0x70000027 154#define SHT_MIPS_XLATE_OLD 0x70000028 155#define SHT_MIPS_PDR_EXCEPTION 0x70000029 156 157#define SHF_MIPS_GPREL 0x10000000 158#define SHF_MIPS_MERGE 0x20000000 159#define SHF_MIPS_ADDR 0x40000000 160#define SHF_MIPS_STRING 0x80000000 161#define SHF_MIPS_NOSTRIP 0x08000000 162#define SHF_MIPS_LOCAL 0x04000000 163#define SHF_MIPS_NAMES 0x02000000 164#define SHF_MIPS_NODUPES 0x01000000 165 166#ifndef ELF_ARCH 167/* ELF register definitions */ 168#define ELF_NGREG 45 169#define ELF_NFPREG 33 170 171typedef unsigned long elf_greg_t; 172typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 173 174typedef double elf_fpreg_t; 175typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 176 177#ifdef CONFIG_32BIT 178 179/* 180 * In order to be sure that we don't attempt to execute an O32 binary which 181 * requires 64 bit FP (FR=1) on a system which does not support it we refuse 182 * to execute any binary which has bits specified by the following macro set 183 * in its ELF header flags. 184 */ 185#ifdef CONFIG_MIPS_O32_FP64_SUPPORT 186# define __MIPS_O32_FP64_MUST_BE_ZERO 0 187#else 188# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64 189#endif 190 191/* 192 * This is used to ensure we don't load something for the wrong architecture. 193 */ 194#define elf_check_arch(hdr) \ 195({ \ 196 int __res = 1; \ 197 struct elfhdr *__h = (hdr); \ 198 \ 199 if (__h->e_machine != EM_MIPS) \ 200 __res = 0; \ 201 if (__h->e_ident[EI_CLASS] != ELFCLASS32) \ 202 __res = 0; \ 203 if ((__h->e_flags & EF_MIPS_ABI2) != 0) \ 204 __res = 0; \ 205 if (((__h->e_flags & EF_MIPS_ABI) != 0) && \ 206 ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \ 207 __res = 0; \ 208 if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \ 209 __res = 0; \ 210 \ 211 __res; \ 212}) 213 214/* 215 * These are used to set parameters in the core dumps. 216 */ 217#define ELF_CLASS ELFCLASS32 218 219#endif /* CONFIG_32BIT */ 220 221#ifdef CONFIG_64BIT 222/* 223 * This is used to ensure we don't load something for the wrong architecture. 224 */ 225#define elf_check_arch(hdr) \ 226({ \ 227 int __res = 1; \ 228 struct elfhdr *__h = (hdr); \ 229 \ 230 if (__h->e_machine != EM_MIPS) \ 231 __res = 0; \ 232 if (__h->e_ident[EI_CLASS] != ELFCLASS64) \ 233 __res = 0; \ 234 \ 235 __res; \ 236}) 237 238/* 239 * These are used to set parameters in the core dumps. 240 */ 241#define ELF_CLASS ELFCLASS64 242 243#endif /* CONFIG_64BIT */ 244 245/* 246 * These are used to set parameters in the core dumps. 247 */ 248#ifdef __MIPSEB__ 249#define ELF_DATA ELFDATA2MSB 250#elif defined(__MIPSEL__) 251#define ELF_DATA ELFDATA2LSB 252#endif 253#define ELF_ARCH EM_MIPS 254 255#endif /* !defined(ELF_ARCH) */ 256 257struct mips_abi; 258 259extern struct mips_abi mips_abi; 260extern struct mips_abi mips_abi_32; 261extern struct mips_abi mips_abi_n32; 262 263#ifdef CONFIG_32BIT 264 265#define SET_PERSONALITY(ex) \ 266do { \ 267 if ((ex).e_flags & EF_MIPS_FP64) \ 268 clear_thread_flag(TIF_32BIT_FPREGS); \ 269 else \ 270 set_thread_flag(TIF_32BIT_FPREGS); \ 271 \ 272 if (personality(current->personality) != PER_LINUX) \ 273 set_personality(PER_LINUX); \ 274 \ 275 current->thread.abi = &mips_abi; \ 276} while (0) 277 278#endif /* CONFIG_32BIT */ 279 280#ifdef CONFIG_64BIT 281 282#ifdef CONFIG_MIPS32_N32 283#define __SET_PERSONALITY32_N32() \ 284 do { \ 285 set_thread_flag(TIF_32BIT_ADDR); \ 286 current->thread.abi = &mips_abi_n32; \ 287 } while (0) 288#else 289#define __SET_PERSONALITY32_N32() \ 290 do { } while (0) 291#endif 292 293#ifdef CONFIG_MIPS32_O32 294#define __SET_PERSONALITY32_O32(ex) \ 295 do { \ 296 set_thread_flag(TIF_32BIT_REGS); \ 297 set_thread_flag(TIF_32BIT_ADDR); \ 298 \ 299 if (!((ex).e_flags & EF_MIPS_FP64)) \ 300 set_thread_flag(TIF_32BIT_FPREGS); \ 301 \ 302 current->thread.abi = &mips_abi_32; \ 303 } while (0) 304#else 305#define __SET_PERSONALITY32_O32(ex) \ 306 do { } while (0) 307#endif 308 309#ifdef CONFIG_MIPS32_COMPAT 310#define __SET_PERSONALITY32(ex) \ 311do { \ 312 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \ 313 ((ex).e_flags & EF_MIPS_ABI) == 0) \ 314 __SET_PERSONALITY32_N32(); \ 315 else \ 316 __SET_PERSONALITY32_O32(ex); \ 317} while (0) 318#else 319#define __SET_PERSONALITY32(ex) do { } while (0) 320#endif 321 322#define SET_PERSONALITY(ex) \ 323do { \ 324 unsigned int p; \ 325 \ 326 clear_thread_flag(TIF_32BIT_REGS); \ 327 clear_thread_flag(TIF_32BIT_FPREGS); \ 328 clear_thread_flag(TIF_32BIT_ADDR); \ 329 \ 330 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ 331 __SET_PERSONALITY32(ex); \ 332 else \ 333 current->thread.abi = &mips_abi; \ 334 \ 335 p = personality(current->personality); \ 336 if (p != PER_LINUX32 && p != PER_LINUX) \ 337 set_personality(PER_LINUX); \ 338} while (0) 339 340#endif /* CONFIG_64BIT */ 341 342#define CORE_DUMP_USE_REGSET 343#define ELF_EXEC_PAGESIZE PAGE_SIZE 344 345/* This yields a mask that user programs can use to figure out what 346 instruction set this cpu supports. This could be done in userspace, 347 but it's not easy, and we've already done it here. */ 348 349#define ELF_HWCAP (0) 350 351/* 352 * This yields a string that ld.so will use to load implementation 353 * specific libraries for optimization. This is more specific in 354 * intent than poking at uname or /proc/cpuinfo. 355 */ 356 357#define ELF_PLATFORM __elf_platform 358extern const char *__elf_platform; 359 360/* 361 * See comments in asm-alpha/elf.h, this is the same thing 362 * on the MIPS. 363 */ 364#define ELF_PLAT_INIT(_r, load_addr) do { \ 365 _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \ 366 _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \ 367 _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \ 368 _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \ 369 _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \ 370 _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \ 371 _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \ 372 _r->regs[30] = _r->regs[31] = 0; \ 373} while (0) 374 375/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 376 use of this is to invoke "./ld.so someprog" to test out a new version of 377 the loader. We need to make sure that it is out of the way of the program 378 that it will "exec", and that there is sufficient room for the brk. */ 379 380#ifndef ELF_ET_DYN_BASE 381#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) 382#endif 383 384#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 385struct linux_binprm; 386extern int arch_setup_additional_pages(struct linux_binprm *bprm, 387 int uses_interp); 388 389struct mm_struct; 390extern unsigned long arch_randomize_brk(struct mm_struct *mm); 391#define arch_randomize_brk arch_randomize_brk 392 393#endif /* _ASM_ELF_H */ 394