include/asm-sparc/elf.h

   1 /* $Id: elf.h,v 1.20 1998/09/14 09:11:10 davem Exp $ */
   2 #ifndef __ASMSPARC_ELF_H
   3 #define __ASMSPARC_ELF_H
   4
   5 /*
   6  * ELF register definitions..
   7  */
   8
   9 #include <linux/config.h>
  10 #include <asm/ptrace.h>
  11 #include <asm/mbus.h>
  12
  13 /* For the most part we present code dumps in the format
  14  * Solaris does.
  15  */
  16 typedef unsigned long elf_greg_t;
  17 #define ELF_NGREG 38
  18 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  19
  20 /* Format is:
  21  *      G0 --> G7
  22  *      O0 --> O7
  23  *      L0 --> L7
  24  *      I0 --> I7
  25  *      PSR, PC, nPC, Y, WIM, TBR
  26  */
  27 #define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs)       \
  28 do {    unsigned long *dest = &(__elf_regs[0]);         \
  29         struct pt_regs *src = (__pt_regs);              \
  30         unsigned long *sp;                              \
  31         memcpy(&dest[0], &src->u_regs[0],               \
  32                sizeof(unsigned long) * 16);             \
  33         /* Don't try this at home kids... */            \
  34         set_fs(USER_DS);                                \
  35         sp = (unsigned long *) src->u_regs[14];         \
  36         copy_from_user(&dest[16], sp,                   \
  37                        sizeof(unsigned long) * 16);     \
  38         set_fs(KERNEL_DS);                              \
  39         dest[32] = src->psr;                            \
  40         dest[33] = src->pc;                             \
  41         dest[34] = src->npc;                            \
  42         dest[35] = src->y;                              \
  43         dest[36] = dest[37] = 0; /* XXX */              \
  44 } while(0);
  45
  46 typedef struct {
  47         union {
  48                 unsigned long   pr_regs[32];
  49                 double          pr_dregs[16];
  50         } pr_fr;
  51         unsigned long __unused;
  52         unsigned long   pr_fsr;
  53         unsigned char   pr_qcnt;
  54         unsigned char   pr_q_entrysize;
  55         unsigned char   pr_en;
  56         unsigned int    pr_q[64];
  57 } elf_fpregset_t;
  58
  59 /*
  60  * This is used to ensure we don't load something for the wrong architecture.
  61  */
  62 #define elf_check_arch(x) ((x) == EM_SPARC)
  63
  64 /*
  65  * These are used to set parameters in the core dumps.
  66  */
  67 #define ELF_ARCH        EM_SPARC
  68 #define ELF_CLASS       ELFCLASS32
  69 #define ELF_DATA        ELFDATA2MSB
  70
  71 #define USE_ELF_CORE_DUMP
  72 #ifndef CONFIG_SUN4
  73 #define ELF_EXEC_PAGESIZE       4096
  74 #else
  75 #define ELF_EXEC_PAGESIZE       8192
  76 #endif
  77
  78
  79 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  80    use of this is to invoke "./ld.so someprog" to test out a new version of
  81    the loader.  We need to make sure that it is out of the way of the program
  82    that it will "exec", and that there is sufficient room for the brk.  */
  83
  84 #define ELF_ET_DYN_BASE         (0x08000000)
  85
  86 /* This yields a mask that user programs can use to figure out what
  87    instruction set this cpu supports.  This can NOT be done in userspace
  88    on Sparc.  */
  89
  90 /* Sun4c has none of the capabilities, most sun4m's have them all.
  91  * XXX This is gross, set some global variable at boot time. -DaveM
  92  */
  93 #define ELF_HWCAP       ((ARCH_SUN4C_SUN4) ? 0 : \
  94                          (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
  95                           HWCAP_SPARC_SWAP | \
  96                           ((srmmu_modtype != Cypress && \
  97                             srmmu_modtype != Cypress_vE && \
  98                             srmmu_modtype != Cypress_vD) ? \
  99                            HWCAP_SPARC_MULDIV : 0)))
 100
 101 /* This yields a string that ld.so will use to load implementation
 102    specific libraries for optimization.  This is more specific in
 103    intent than poking at uname or /proc/cpuinfo. */
 104
 105 #define ELF_PLATFORM    (NULL)
 106
 107 #ifdef __KERNEL__
 108 #define SET_PERSONALITY(ex, ibcs2) \
 109         current->personality = (ibcs2 ? PER_SVR4 : PER_LINUX)
 110 #endif
 111
 112 #endif /* !(__ASMSPARC_ELF_H) */