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C/C++ Source or Header  |  2006-08-11  |  10.7 KB  |  375 lines
  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_ABI        0x0000f000
  40. #define EF_MIPS_ARCH        0xf0000000
  41.  
  42. #define DT_MIPS_RLD_VERSION    0x70000001
  43. #define DT_MIPS_TIME_STAMP    0x70000002
  44. #define DT_MIPS_ICHECKSUM    0x70000003
  45. #define DT_MIPS_IVERSION    0x70000004
  46. #define DT_MIPS_FLAGS        0x70000005
  47.     #define RHF_NONE    0x00000000
  48.     #define RHF_HARDWAY    0x00000001
  49.     #define RHF_NOTPOT    0x00000002
  50.     #define RHF_SGI_ONLY    0x00000010
  51. #define DT_MIPS_BASE_ADDRESS    0x70000006
  52. #define DT_MIPS_CONFLICT    0x70000008
  53. #define DT_MIPS_LIBLIST        0x70000009
  54. #define DT_MIPS_LOCAL_GOTNO    0x7000000a
  55. #define DT_MIPS_CONFLICTNO    0x7000000b
  56. #define DT_MIPS_LIBLISTNO    0x70000010
  57. #define DT_MIPS_SYMTABNO    0x70000011
  58. #define DT_MIPS_UNREFEXTNO    0x70000012
  59. #define DT_MIPS_GOTSYM        0x70000013
  60. #define DT_MIPS_HIPAGENO    0x70000014
  61. #define DT_MIPS_RLD_MAP        0x70000016
  62.  
  63. #define R_MIPS_NONE        0
  64. #define R_MIPS_16        1
  65. #define R_MIPS_32        2
  66. #define R_MIPS_REL32        3
  67. #define R_MIPS_26        4
  68. #define R_MIPS_HI16        5
  69. #define R_MIPS_LO16        6
  70. #define R_MIPS_GPREL16        7
  71. #define R_MIPS_LITERAL        8
  72. #define R_MIPS_GOT16        9
  73. #define R_MIPS_PC16        10
  74. #define R_MIPS_CALL16        11
  75. #define R_MIPS_GPREL32        12
  76. /* The remaining relocs are defined on Irix, although they are not
  77.    in the MIPS ELF ABI.  */
  78. #define R_MIPS_UNUSED1        13
  79. #define R_MIPS_UNUSED2        14
  80. #define R_MIPS_UNUSED3        15
  81. #define R_MIPS_SHIFT5        16
  82. #define R_MIPS_SHIFT6        17
  83. #define R_MIPS_64        18
  84. #define R_MIPS_GOT_DISP        19
  85. #define R_MIPS_GOT_PAGE        20
  86. #define R_MIPS_GOT_OFST        21
  87. /*
  88.  * The following two relocation types are specified in the MIPS ABI
  89.  * conformance guide version 1.2 but not yet in the psABI.
  90.  */
  91. #define R_MIPS_GOTHI16        22
  92. #define R_MIPS_GOTLO16        23
  93. #define R_MIPS_SUB        24
  94. #define R_MIPS_INSERT_A        25
  95. #define R_MIPS_INSERT_B        26
  96. #define R_MIPS_DELETE        27
  97. #define R_MIPS_HIGHER        28
  98. #define R_MIPS_HIGHEST        29
  99. /*
  100.  * The following two relocation types are specified in the MIPS ABI
  101.  * conformance guide version 1.2 but not yet in the psABI.
  102.  */
  103. #define R_MIPS_CALLHI16        30
  104. #define R_MIPS_CALLLO16        31
  105. /*
  106.  * This range is reserved for vendor specific relocations.
  107.  */
  108. #define R_MIPS_LOVENDOR        100
  109. #define R_MIPS_HIVENDOR        127
  110.  
  111. #define SHN_MIPS_ACCOMON    0xff00        /* Allocated common symbols */
  112. #define SHN_MIPS_TEXT        0xff01        /* Allocated test symbols.  */
  113. #define SHN_MIPS_DATA        0xff02        /* Allocated data symbols.  */
  114. #define SHN_MIPS_SCOMMON    0xff03        /* Small common symbols */
  115. #define SHN_MIPS_SUNDEFINED    0xff04        /* Small undefined symbols */
  116.  
  117. #define SHT_MIPS_LIST        0x70000000
  118. #define SHT_MIPS_CONFLICT    0x70000002
  119. #define SHT_MIPS_GPTAB        0x70000003
  120. #define SHT_MIPS_UCODE        0x70000004
  121. #define SHT_MIPS_DEBUG        0x70000005
  122. #define SHT_MIPS_REGINFO    0x70000006
  123. #define SHT_MIPS_PACKAGE    0x70000007
  124. #define SHT_MIPS_PACKSYM    0x70000008
  125. #define SHT_MIPS_RELD        0x70000009
  126. #define SHT_MIPS_IFACE        0x7000000b
  127. #define SHT_MIPS_CONTENT    0x7000000c
  128. #define SHT_MIPS_OPTIONS    0x7000000d
  129. #define SHT_MIPS_SHDR        0x70000010
  130. #define SHT_MIPS_FDESC        0x70000011
  131. #define SHT_MIPS_EXTSYM        0x70000012
  132. #define SHT_MIPS_DENSE        0x70000013
  133. #define SHT_MIPS_PDESC        0x70000014
  134. #define SHT_MIPS_LOCSYM        0x70000015
  135. #define SHT_MIPS_AUXSYM        0x70000016
  136. #define SHT_MIPS_OPTSYM        0x70000017
  137. #define SHT_MIPS_LOCSTR        0x70000018
  138. #define SHT_MIPS_LINE        0x70000019
  139. #define SHT_MIPS_RFDESC        0x7000001a
  140. #define SHT_MIPS_DELTASYM    0x7000001b
  141. #define SHT_MIPS_DELTAINST    0x7000001c
  142. #define SHT_MIPS_DELTACLASS    0x7000001d
  143. #define SHT_MIPS_DWARF        0x7000001e
  144. #define SHT_MIPS_DELTADECL    0x7000001f
  145. #define SHT_MIPS_SYMBOL_LIB    0x70000020
  146. #define SHT_MIPS_EVENTS        0x70000021
  147. #define SHT_MIPS_TRANSLATE    0x70000022
  148. #define SHT_MIPS_PIXIE        0x70000023
  149. #define SHT_MIPS_XLATE        0x70000024
  150. #define SHT_MIPS_XLATE_DEBUG    0x70000025
  151. #define SHT_MIPS_WHIRL        0x70000026
  152. #define SHT_MIPS_EH_REGION    0x70000027
  153. #define SHT_MIPS_XLATE_OLD    0x70000028
  154. #define SHT_MIPS_PDR_EXCEPTION    0x70000029
  155.  
  156. #define SHF_MIPS_GPREL        0x10000000
  157. #define SHF_MIPS_MERGE        0x20000000
  158. #define SHF_MIPS_ADDR        0x40000000
  159. #define SHF_MIPS_STRING        0x80000000
  160. #define SHF_MIPS_NOSTRIP    0x08000000
  161. #define SHF_MIPS_LOCAL        0x04000000
  162. #define SHF_MIPS_NAMES        0x02000000
  163. #define SHF_MIPS_NODUPES    0x01000000
  164.  
  165. #ifndef ELF_ARCH
  166. /* ELF register definitions */
  167. #define ELF_NGREG    45
  168. #define ELF_NFPREG    33
  169.  
  170. typedef unsigned long elf_greg_t;
  171. typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  172.  
  173. typedef double elf_fpreg_t;
  174. typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  175.  
  176. #ifdef CONFIG_32BIT
  177.  
  178. /*
  179.  * This is used to ensure we don't load something for the wrong architecture.
  180.  */
  181. #define elf_check_arch(hdr)                        \
  182. ({                                    \
  183.     int __res = 1;                            \
  184.     struct elfhdr *__h = (hdr);                    \
  185.                                     \
  186.     if (__h->e_machine != EM_MIPS)                    \
  187.         __res = 0;                        \
  188.     if (__h->e_ident[EI_CLASS] != ELFCLASS32)            \
  189.         __res = 0;                        \
  190.     if ((__h->e_flags & EF_MIPS_ABI2) != 0)                \
  191.         __res = 0;                        \
  192.     if (((__h->e_flags & EF_MIPS_ABI) != 0) &&            \
  193.         ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))        \
  194.         __res = 0;                        \
  195.                                     \
  196.     __res;                                \
  197. })
  198.  
  199. /*
  200.  * These are used to set parameters in the core dumps.
  201.  */
  202. #define ELF_CLASS    ELFCLASS32
  203.  
  204. #endif /* CONFIG_32BIT */
  205.  
  206. #ifdef CONFIG_64BIT
  207. /*
  208.  * This is used to ensure we don't load something for the wrong architecture.
  209.  */
  210. #define elf_check_arch(hdr)                        \
  211. ({                                    \
  212.     int __res = 1;                            \
  213.     struct elfhdr *__h = (hdr);                    \
  214.                                     \
  215.     if (__h->e_machine != EM_MIPS)                    \
  216.         __res = 0;                        \
  217.     if (__h->e_ident[EI_CLASS] != ELFCLASS64)             \
  218.         __res = 0;                        \
  219.                                     \
  220.     __res;                                \
  221. })
  222.  
  223. /*
  224.  * These are used to set parameters in the core dumps.
  225.  */
  226. #define ELF_CLASS    ELFCLASS64
  227.  
  228. #endif /* CONFIG_64BIT */
  229.  
  230. /*
  231.  * These are used to set parameters in the core dumps.
  232.  */
  233. #ifdef __MIPSEB__
  234. #define ELF_DATA    ELFDATA2MSB
  235. #elif __MIPSEL__
  236. #define ELF_DATA    ELFDATA2LSB
  237. #endif
  238. #define ELF_ARCH    EM_MIPS
  239.  
  240. #endif /* !defined(ELF_ARCH) */
  241.  
  242. #ifdef __KERNEL__
  243.  
  244. struct mips_abi;
  245.  
  246. extern struct mips_abi mips_abi;
  247. extern struct mips_abi mips_abi_32;
  248. extern struct mips_abi mips_abi_n32;
  249.  
  250. #ifdef CONFIG_32BIT
  251.  
  252. #define SET_PERSONALITY(ex, ibcs2)                    \
  253. do {                                    \
  254.     if (ibcs2)                            \
  255.         set_personality(PER_SVR4);                \
  256.     set_personality(PER_LINUX);                    \
  257.                                     \
  258.     current->thread.abi = &mips_abi;                \
  259. } while (0)
  260.  
  261. #endif /* CONFIG_32BIT */
  262.  
  263. #ifdef CONFIG_64BIT
  264.  
  265. #ifdef CONFIG_MIPS32_N32
  266. #define __SET_PERSONALITY32_N32()                    \
  267.     do {                                \
  268.         current->thread.mflags |= MF_N32;            \
  269.         current->thread.abi = &mips_abi_n32;            \
  270.     } while (0)
  271. #else
  272. #define __SET_PERSONALITY32_N32()                    \
  273.     do { } while (0)
  274. #endif
  275.  
  276. #ifdef CONFIG_MIPS32_O32
  277. #define __SET_PERSONALITY32_O32()                    \
  278.     do {                                \
  279.         current->thread.mflags |= MF_O32;            \
  280.         current->thread.abi = &mips_abi_32;            \
  281.     } while (0)
  282. #else
  283. #define __SET_PERSONALITY32_O32()                    \
  284.     do { } while (0)
  285. #endif
  286.  
  287. #ifdef CONFIG_MIPS32_COMPAT
  288. #define __SET_PERSONALITY32(ex)                        \
  289. do {                                    \
  290.     if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&            \
  291.          ((ex).e_flags & EF_MIPS_ABI) == 0)                \
  292.         __SET_PERSONALITY32_N32();                \
  293.     else                                \
  294.         __SET_PERSONALITY32_O32();                \
  295. } while (0)
  296. #else
  297. #define __SET_PERSONALITY32(ex)    do { } while (0)
  298. #endif
  299.  
  300. #define SET_PERSONALITY(ex, ibcs2)                    \
  301. do {                                    \
  302.     current->thread.mflags &= ~MF_ABI_MASK;                \
  303.     if ((ex).e_ident[EI_CLASS] == ELFCLASS32)            \
  304.         __SET_PERSONALITY32(ex);                \
  305.     else {                                \
  306.         current->thread.mflags |= MF_N64;            \
  307.         current->thread.abi = &mips_abi;            \
  308.     }                                \
  309.                                     \
  310.     if (ibcs2)                            \
  311.         set_personality(PER_SVR4);                \
  312.     else if (current->personality != PER_LINUX32)            \
  313.         set_personality(PER_LINUX);                \
  314. } while (0)
  315.  
  316. #endif /* CONFIG_64BIT */
  317.  
  318. struct task_struct;
  319.  
  320. extern void elf_dump_regs(elf_greg_t *, struct pt_regs *regs);
  321. extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
  322. extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
  323.  
  324. #define ELF_CORE_COPY_REGS(elf_regs, regs)            \
  325.     elf_dump_regs((elf_greg_t *)&(elf_regs), regs);
  326. #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
  327. #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs)            \
  328.     dump_task_fpu(tsk, elf_fpregs)
  329.  
  330. #endif /* __KERNEL__ */
  331.  
  332. #define USE_ELF_CORE_DUMP
  333. #define ELF_EXEC_PAGESIZE    PAGE_SIZE
  334.  
  335. /* This yields a mask that user programs can use to figure out what
  336.    instruction set this cpu supports.  This could be done in userspace,
  337.    but it's not easy, and we've already done it here.  */
  338.  
  339. #define ELF_HWCAP       (0)
  340.  
  341. /* This yields a string that ld.so will use to load implementation
  342.    specific libraries for optimization.  This is more specific in
  343.    intent than poking at uname or /proc/cpuinfo.
  344.  
  345.    For the moment, we have only optimizations for the Intel generations,
  346.    but that could change... */
  347.  
  348. #define ELF_PLATFORM  (NULL)
  349.  
  350. /*
  351.  * See comments in asm-alpha/elf.h, this is the same thing
  352.  * on the MIPS.
  353.  */
  354. #define ELF_PLAT_INIT(_r, load_addr)    do { \
  355.     _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;    \
  356.     _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;    \
  357.     _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;    \
  358.     _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;    \
  359.     _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;    \
  360.     _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;    \
  361.     _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;    \
  362.     _r->regs[30] = _r->regs[31] = 0;                \
  363. } while (0)
  364.  
  365. /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  366.    use of this is to invoke "./ld.so someprog" to test out a new version of
  367.    the loader.  We need to make sure that it is out of the way of the program
  368.    that it will "exec", and that there is sufficient room for the brk.  */
  369.  
  370. #ifndef ELF_ET_DYN_BASE
  371. #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
  372. #endif
  373.  
  374. #endif /* _ASM_ELF_H */
  375.