include/asm-sparc64/elf.h

   1 /* $Id: elf.h,v 1.21 1999/08/04 07:04:23 jj Exp $ */
   2 #ifndef __ASM_SPARC64_ELF_H
   3 #define __ASM_SPARC64_ELF_H
   4
   5 /*
   6  * ELF register definitions..
   7  */
   8
   9 #include <asm/ptrace.h>
  10 #ifdef __KERNEL__
  11 #include <asm/processor.h>
  12 #endif
  13
  14 /*
  15  * These are used to set parameters in the core dumps.
  16  */
  17 #ifndef ELF_ARCH
  18 #define ELF_ARCH                EM_SPARCV9
  19 #define ELF_CLASS               ELFCLASS64
  20 #define ELF_DATA                ELFDATA2MSB
  21
  22 typedef unsigned long elf_greg_t;
  23
  24 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
  25 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  26
  27 typedef struct {
  28         unsigned long   pr_regs[32];
  29         unsigned long   pr_fsr;
  30         unsigned long   pr_gsr;
  31         unsigned long   pr_fprs;
  32 } elf_fpregset_t;
  33 #endif
  34
  35 /*
  36  * This is used to ensure we don't load something for the wrong architecture.
  37  */
  38 #ifndef elf_check_arch
  39 #define elf_check_arch(x) ((x) == ELF_ARCH)     /* Might be EM_SPARCV9 or EM_SPARC */
  40 #endif
  41
  42 #define USE_ELF_CORE_DUMP
  43 #define ELF_EXEC_PAGESIZE       8192
  44
  45 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  46    use of this is to invoke "./ld.so someprog" to test out a new version of
  47    the loader.  We need to make sure that it is out of the way of the program
  48    that it will "exec", and that there is sufficient room for the brk.  */
  49
  50 #ifndef ELF_ET_DYN_BASE
  51 #define ELF_ET_DYN_BASE         0xfffff80000000000UL
  52 #endif
  53
  54
  55 /* This yields a mask that user programs can use to figure out what
  56    instruction set this cpu supports.  */
  57
  58 /* On Ultra, we support all of the v8 capabilities. */
  59 #define ELF_HWCAP       (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
  60                          HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV | \
  61                          HWCAP_SPARC_V9)
  62
  63 /* This yields a string that ld.so will use to load implementation
  64    specific libraries for optimization.  This is more specific in
  65    intent than poking at uname or /proc/cpuinfo.  */
  66
  67 #define ELF_PLATFORM    (NULL)
  68
  69 #ifdef __KERNEL__
  70 #define SET_PERSONALITY(ex, ibcs2)                      \
  71 do {    unsigned char flags = current->thread.flags;    \
  72         if ((ex).e_ident[EI_CLASS] == ELFCLASS32)       \
  73                 flags |= SPARC_FLAG_32BIT;              \
  74         else                                            \
  75                 flags &= ~SPARC_FLAG_32BIT;             \
  76         if (flags != current->thread.flags) {           \
  77                 unsigned long pgd_cache = 0UL;          \
  78                 if (flags & SPARC_FLAG_32BIT)           \
  79                   pgd_cache =                           \
  80                     pgd_val(current->mm->pgd[0])<<11UL; \
  81                 __asm__ __volatile__(                   \
  82                         "stxa\t%0, [%1] %2"             \
  83                         : /* no outputs */              \
  84                         : "r" (pgd_cache),              \
  85                           "r" (TSB_REG),                \
  86                           "i" (ASI_DMMU));              \
  87                 current->thread.flags = flags;          \
  88         }                                               \
  89                                                         \
  90         if (ibcs2)                                      \
  91                 current->personality = PER_SVR4;        \
  92         else if (current->personality != PER_LINUX32)   \
  93                 current->personality = PER_LINUX;       \
  94 } while (0)
  95 #endif
  96
  97 #endif /* !(__ASM_SPARC64_ELF_H) */