include/asm-mips/elf.h

   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 #ifndef _ASM_ELF_H
   7 #define _ASM_ELF_H
   8
   9 #include <linux/config.h>
  10
  11 /* ELF header e_flags defines. */
  12 /* MIPS architecture level. */
  13 #define EF_MIPS_ARCH_1          0x00000000      /* -mips1 code.  */
  14 #define EF_MIPS_ARCH_2          0x10000000      /* -mips2 code.  */
  15 #define EF_MIPS_ARCH_3          0x20000000      /* -mips3 code.  */
  16 #define EF_MIPS_ARCH_4          0x30000000      /* -mips4 code.  */
  17 #define EF_MIPS_ARCH_5          0x40000000      /* -mips5 code.  */
  18 #define EF_MIPS_ARCH_32         0x50000000      /* MIPS32 code.  */
  19 #define EF_MIPS_ARCH_64         0x60000000      /* MIPS64 code.  */
  20
  21 /* The ABI of a file. */
  22 #define EF_MIPS_ABI_O32         0x00001000      /* O32 ABI.  */
  23 #define EF_MIPS_ABI_O64         0x00002000      /* O32 extended for 64 bit.  */
  24
  25 #define PT_MIPS_REGINFO         0x70000000
  26 #define PT_MIPS_OPTIONS         0x70000001
  27
  28 /* Flags in the e_flags field of the header */
  29 #define EF_MIPS_NOREORDER       0x00000001
  30 #define EF_MIPS_PIC             0x00000002
  31 #define EF_MIPS_CPIC            0x00000004
  32 #define EF_MIPS_ABI2            0x00000020
  33 #define EF_MIPS_OPTIONS_FIRST   0x00000080
  34 #define EF_MIPS_32BITMODE       0x00000100
  35 #define EF_MIPS_ABI             0x0000f000
  36 #define EF_MIPS_ARCH            0xf0000000
  37
  38 #define DT_MIPS_RLD_VERSION     0x70000001
  39 #define DT_MIPS_TIME_STAMP      0x70000002
  40 #define DT_MIPS_ICHECKSUM       0x70000003
  41 #define DT_MIPS_IVERSION        0x70000004
  42 #define DT_MIPS_FLAGS           0x70000005
  43   #define RHF_NONE                0
  44   #define RHF_HARDWAY             1
  45   #define RHF_NOTPOT              2
  46 #define DT_MIPS_BASE_ADDRESS    0x70000006
  47 #define DT_MIPS_CONFLICT        0x70000008
  48 #define DT_MIPS_LIBLIST         0x70000009
  49 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
  50 #define DT_MIPS_CONFLICTNO      0x7000000b
  51 #define DT_MIPS_LIBLISTNO       0x70000010
  52 #define DT_MIPS_SYMTABNO        0x70000011
  53 #define DT_MIPS_UNREFEXTNO      0x70000012
  54 #define DT_MIPS_GOTSYM          0x70000013
  55 #define DT_MIPS_HIPAGENO        0x70000014
  56 #define DT_MIPS_RLD_MAP         0x70000016
  57
  58 #define R_MIPS_NONE             0
  59 #define R_MIPS_16               1
  60 #define R_MIPS_32               2
  61 #define R_MIPS_REL32            3
  62 #define R_MIPS_26               4
  63 #define R_MIPS_HI16             5
  64 #define R_MIPS_LO16             6
  65 #define R_MIPS_GPREL16          7
  66 #define R_MIPS_LITERAL          8
  67 #define R_MIPS_GOT16            9
  68 #define R_MIPS_PC16             10
  69 #define R_MIPS_CALL16           11
  70 #define R_MIPS_GPREL32          12
  71 /* The remaining relocs are defined on Irix, although they are not
  72    in the MIPS ELF ABI.  */
  73 #define R_MIPS_UNUSED1          13
  74 #define R_MIPS_UNUSED2          14
  75 #define R_MIPS_UNUSED3          15
  76 #define R_MIPS_SHIFT5           16
  77 #define R_MIPS_SHIFT6           17
  78 #define R_MIPS_64               18
  79 #define R_MIPS_GOT_DISP         19
  80 #define R_MIPS_GOT_PAGE         20
  81 #define R_MIPS_GOT_OFST         21
  82 /*
  83  * The following two relocation types are specified in the MIPS ABI
  84  * conformance guide version 1.2 but not yet in the psABI.
  85  */
  86 #define R_MIPS_GOTHI16          22
  87 #define R_MIPS_GOTLO16          23
  88 #define R_MIPS_SUB              24
  89 #define R_MIPS_INSERT_A         25
  90 #define R_MIPS_INSERT_B         26
  91 #define R_MIPS_DELETE           27
  92 #define R_MIPS_HIGHER           28
  93 #define R_MIPS_HIGHEST          29
  94 /*
  95  * The following two relocation types are specified in the MIPS ABI
  96  * conformance guide version 1.2 but not yet in the psABI.
  97  */
  98 #define R_MIPS_CALLHI16         30
  99 #define R_MIPS_CALLLO16         31
 100 /*
 101  * This range is reserved for vendor specific relocations.
 102  */
 103 #define R_MIPS_LOVENDOR         100
 104 #define R_MIPS_HIVENDOR         127
 105
 106 #define SHN_MIPS_ACCOMON        0xff00
 107
 108 #define SHT_MIPS_LIST           0x70000000
 109 #define SHT_MIPS_CONFLICT       0x70000002
 110 #define SHT_MIPS_GPTAB          0x70000003
 111 #define SHT_MIPS_UCODE          0x70000004
 112
 113 #define SHF_MIPS_GPREL  0x10000000
 114
 115 #ifndef ELF_ARCH
 116 /* ELF register definitions */
 117 #define ELF_NGREG       45
 118 #define ELF_NFPREG      33
 119
 120 typedef unsigned long elf_greg_t;
 121 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 122
 123 typedef double elf_fpreg_t;
 124 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 125
 126 #ifdef CONFIG_MIPS32
 127
 128 /*
 129  * This is used to ensure we don't load something for the wrong architecture.
 130  */
 131 #define elf_check_arch(hdr)                                             \
 132 ({                                                                      \
 133         int __res = 1;                                                  \
 134         struct elfhdr *__h = (hdr);                                     \
 135                                                                         \
 136         if (__h->e_machine != EM_MIPS)                                  \
 137                 __res = 0;                                              \
 138         if (__h->e_ident[EI_CLASS] != ELFCLASS32)                       \
 139                 __res = 0;                                              \
 140         if ((__h->e_flags & EF_MIPS_ABI2) != 0)                         \
 141                 __res = 0;                                              \
 142         if (((__h->e_flags & EF_MIPS_ABI) != 0) &&                      \
 143             ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))          \
 144                 __res = 0;                                              \
 145                                                                         \
 146         __res;                                                          \
 147 })
 148
 149 /*
 150  * These are used to set parameters in the core dumps.
 151  */
 152 #define ELF_CLASS       ELFCLASS32
 153
 154 #endif /* CONFIG_MIPS32 */
 155
 156 #ifdef CONFIG_MIPS64
 157 /*
 158  * This is used to ensure we don't load something for the wrong architecture.
 159  */
 160 #define elf_check_arch(hdr)                                             \
 161 ({                                                                      \
 162         int __res = 1;                                                  \
 163         struct elfhdr *__h = (hdr);                                     \
 164                                                                         \
 165         if (__h->e_machine != EM_MIPS)                                  \
 166                 __res = 0;                                              \
 167         if (__h->e_ident[EI_CLASS] != ELFCLASS64)                       \
 168                 __res = 0;                                              \
 169                                                                         \
 170         __res;                                                          \
 171 })
 172
 173 /*
 174  * These are used to set parameters in the core dumps.
 175  */
 176 #define ELF_CLASS       ELFCLASS64
 177
 178 #endif /* CONFIG_MIPS64 */
 179
 180 /*
 181  * These are used to set parameters in the core dumps.
 182  */
 183 #ifdef __MIPSEB__
 184 #define ELF_DATA        ELFDATA2MSB
 185 #elif __MIPSEL__
 186 #define ELF_DATA        ELFDATA2LSB
 187 #endif
 188 #define ELF_ARCH        EM_MIPS
 189
 190 #endif /* !defined(ELF_ARCH) */
 191
 192 #ifdef __KERNEL__
 193
 194 #ifdef CONFIG_MIPS32
 195
 196 #define SET_PERSONALITY(ex, ibcs2)                      \
 197 do {                                                    \
 198         if (ibcs2)                                      \
 199                 set_personality(PER_SVR4);              \
 200         set_personality(PER_LINUX);                     \
 201 } while (0)
 202
 203 #endif /* CONFIG_MIPS32 */
 204
 205 #ifdef CONFIG_MIPS64
 206
 207 #define SET_PERSONALITY(ex, ibcs2)                              \
 208 do {    current->thread.mflags &= ~MF_ABI_MASK;                 \
 209         if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {             \
 210                 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&     \
 211                      ((ex).e_flags & EF_MIPS_ABI) == 0)         \
 212                         current->thread.mflags |= MF_N32;       \
 213                 else                                            \
 214                         current->thread.mflags |= MF_O32;       \
 215         } else                                                  \
 216                 current->thread.mflags |= MF_N64;               \
 217         if (ibcs2)                                              \
 218                 set_personality(PER_SVR4);                      \
 219         else if (current->personality != PER_LINUX32)           \
 220                 set_personality(PER_LINUX);                     \
 221 } while (0)
 222
 223 #endif /* CONFIG_MIPS64 */
 224
 225 #endif /* __KERNEL__ */
 226
 227 /* This one accepts IRIX binaries.  */
 228 #define irix_elf_check_arch(hdr)        ((hdr)->e_machine == EM_MIPS)
 229
 230 #define USE_ELF_CORE_DUMP
 231 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 232
 233 #define ELF_CORE_COPY_REGS(_dest,_regs)                         \
 234         memcpy((char *) &_dest, (char *) _regs,                 \
 235                sizeof(struct pt_regs));
 236
 237 /* This yields a mask that user programs can use to figure out what
 238    instruction set this cpu supports.  This could be done in userspace,
 239    but it's not easy, and we've already done it here.  */
 240
 241 #define ELF_HWCAP       (0)
 242
 243 /* This yields a string that ld.so will use to load implementation
 244    specific libraries for optimization.  This is more specific in
 245    intent than poking at uname or /proc/cpuinfo.
 246
 247    For the moment, we have only optimizations for the Intel generations,
 248    but that could change... */
 249
 250 #define ELF_PLATFORM  (NULL)
 251
 252 /*
 253  * See comments in asm-alpha/elf.h, this is the same thing
 254  * on the MIPS.
 255  */
 256 #define ELF_PLAT_INIT(_r, load_addr)    do { \
 257         _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;      \
 258         _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;      \
 259         _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;   \
 260         _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;  \
 261         _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;  \
 262         _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;  \
 263         _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;  \
 264         _r->regs[30] = _r->regs[31] = 0;                                \
 265 } while (0)
 266
 267 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 268    use of this is to invoke "./ld.so someprog" to test out a new version of
 269    the loader.  We need to make sure that it is out of the way of the program
 270    that it will "exec", and that there is sufficient room for the brk.  */
 271
 272 #ifndef ELF_ET_DYN_BASE
 273 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
 274 #endif
 275
 276 #endif /* _ASM_ELF_H */