elf.h

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    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 <asm/ptrace.h>
   10 #include <asm/user.h>
   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 /* 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 #ifndef ELF_ARCH
   26 /* ELF register definitions */
   27 #define ELF_NGREG       45
   28 #define ELF_NFPREG      33
   29 
   30 typedef unsigned long elf_greg_t;
   31 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
   32 
   33 typedef double elf_fpreg_t;
   34 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
   35 
   36 /*
   37  * This is used to ensure we don't load something for the wrong architecture.
   38  */
   39 #define elf_check_arch(hdr)                                             \
   40 ({                                                                      \
   41         int __res = 1;                                                  \
   42         struct elfhdr *__h = (hdr);                                     \
   43                                                                         \
   44         if (__h->e_machine != EM_MIPS)                                  \
   45                 __res = 0;                                              \
   46         if (__h->e_ident[EI_CLASS] == ELFCLASS32)                       \
   47                 __res = 0;                                              \
   48                                                                         \
   49         __res;                                                          \
   50 })
   51 
   52 /*
   53  * These are used to set parameters in the core dumps.
   54  */
   55 #define ELF_CLASS       ELFCLASS64
   56 #ifdef __MIPSEB__
   57 #define ELF_DATA        ELFDATA2MSB
   58 #elif __MIPSEL__
   59 #define ELF_DATA        ELFDATA2LSB
   60 #endif
   61 #define ELF_ARCH        EM_MIPS
   62 #endif /* !defined(ELF_ARCH) */
   63 
   64 #define USE_ELF_CORE_DUMP
   65 #define ELF_EXEC_PAGESIZE       4096
   66 
   67 #define ELF_CORE_COPY_REGS(_dest,_regs)                         \
   68         memcpy((char *) &_dest, (char *) _regs,                 \
   69                sizeof(struct pt_regs));
   70 
   71 /* This yields a mask that user programs can use to figure out what
   72    instruction set this cpu supports.  This could be done in userspace,
   73    but it's not easy, and we've already done it here.  */
   74 
   75 #define ELF_HWCAP       (0)
   76 
   77 /* This yields a string that ld.so will use to load implementation
   78    specific libraries for optimization.  This is more specific in
   79    intent than poking at uname or /proc/cpuinfo.
   80 
   81    For the moment, we have only optimizations for the Intel generations,
   82    but that could change... */
   83 
   84 #define ELF_PLATFORM  (NULL)
   85 
   86 /*
   87  * See comments in asm-alpha/elf.h, this is the same thing
   88  * on the MIPS.
   89  */
   90 #define ELF_PLAT_INIT(_r)       do { \
   91         _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;      \
   92         _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;      \
   93         _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;   \
   94         _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;  \
   95         _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;  \
   96         _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;  \
   97         _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;  \
   98         _r->regs[30] = _r->regs[31] = 0;                                \
   99 } while (0)
  100 
  101 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  102    use of this is to invoke "./ld.so someprog" to test out a new version of
  103    the loader.  We need to make sure that it is out of the way of the program
  104    that it will "exec", and that there is sufficient room for the brk.  */
  105 
  106 #ifndef ELF_ET_DYN_BASE
  107 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
  108 #endif
  109 
  110 #ifdef __KERNEL__
  111 #define SET_PERSONALITY(ex, ibcs2)                      \
  112 do {    current->thread.mflags &= ~MF_ABI_MASK;         \
  113         if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {     \
  114                 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&     \
  115                      ((ex).e_flags & EF_MIPS_ABI) == 0)         \
  116                         current->thread.mflags |= MF_N32;       \
  117                 else                                            \
  118                         current->thread.mflags |= MF_O32;       \
  119         } else                                          \
  120                 current->thread.mflags |= MF_N64;       \
  121         if (ibcs2)                                      \
  122                 set_personality(PER_SVR4);              \
  123         else if (current->personality != PER_LINUX32)   \
  124                 set_personality(PER_LINUX);             \
  125 } while (0)
  126 #endif
  127 
  128 #endif /* _ASM_ELF_H */

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FreeBSD/Linux Kernel Cross Reference sys/include/asm-mips64/elf.h

FreeBSD/Linux Kernel Cross Reference
sys/include/asm-mips64/elf.h