include/asm-sparc/elf.h

   1 /* $Id: elf.h,v 1.22 2000/07/12 01:27:08 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 #include <asm/uaccess.h>
  13
  14 /* For the most part we present code dumps in the format
  15  * Solaris does.
  16  */
  17 typedef unsigned long elf_greg_t;
  18 #define ELF_NGREG 38
  19 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  20
  21 /* Format is:
  22  *      G0 --> G7
  23  *      O0 --> O7
  24  *      L0 --> L7
  25  *      I0 --> I7
  26  *      PSR, PC, nPC, Y, WIM, TBR
  27  */
  28 #define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs)       \
  29 do {    unsigned long *dest = &(__elf_regs[0]);         \
  30         struct pt_regs *src = (__pt_regs);              \
  31         unsigned long *sp;                              \
  32         memcpy(&dest[0], &src->u_regs[0],               \
  33                sizeof(unsigned long) * 16);             \
  34         /* Don't try this at home kids... */            \
  35         set_fs(USER_DS);                                \
  36         sp = (unsigned long *) src->u_regs[14];         \
  37         copy_from_user(&dest[16], sp,                   \
  38                        sizeof(unsigned long) * 16);     \
  39         set_fs(KERNEL_DS);                              \
  40         dest[32] = src->psr;                            \
  41         dest[33] = src->pc;                             \
  42         dest[34] = src->npc;                            \
  43         dest[35] = src->y;                              \
  44         dest[36] = dest[37] = 0; /* XXX */              \
  45 } while(0); /* Janitors: Don't touch this colon. */
  46
  47 typedef struct {
  48         union {
  49                 unsigned long   pr_regs[32];
  50                 double          pr_dregs[16];
  51         } pr_fr;
  52         unsigned long __unused;
  53         unsigned long   pr_fsr;
  54         unsigned char   pr_qcnt;
  55         unsigned char   pr_q_entrysize;
  56         unsigned char   pr_en;
  57         unsigned int    pr_q[64];
  58 } elf_fpregset_t;
  59
  60 /*
  61  * This is used to ensure we don't load something for the wrong architecture.
  62  */
  63 #define elf_check_arch(x) ((x)->e_machine == EM_SPARC)
  64
  65 /*
  66  * These are used to set parameters in the core dumps.
  67  */
  68 #define ELF_ARCH        EM_SPARC
  69 #define ELF_CLASS       ELFCLASS32
  70 #define ELF_DATA        ELFDATA2MSB
  71
  72 #define USE_ELF_CORE_DUMP
  73 #ifndef CONFIG_SUN4
  74 #define ELF_EXEC_PAGESIZE       4096
  75 #else
  76 #define ELF_EXEC_PAGESIZE       8192
  77 #endif
  78
  79
  80 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  81    use of this is to invoke "./ld.so someprog" to test out a new version of
  82    the loader.  We need to make sure that it is out of the way of the program
  83    that it will "exec", and that there is sufficient room for the brk.  */
  84
  85 #define ELF_ET_DYN_BASE         (0x08000000)
  86
  87 /* This yields a mask that user programs can use to figure out what
  88    instruction set this cpu supports.  This can NOT be done in userspace
  89    on Sparc.  */
  90
  91 /* Sun4c has none of the capabilities, most sun4m's have them all.
  92  * XXX This is gross, set some global variable at boot time. -DaveM
  93  */
  94 #define ELF_HWCAP       ((ARCH_SUN4C_SUN4) ? 0 : \
  95                          (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
  96                           HWCAP_SPARC_SWAP | \
  97                           ((srmmu_modtype != Cypress && \
  98                             srmmu_modtype != Cypress_vE && \
  99                             srmmu_modtype != Cypress_vD) ? \
 100                            HWCAP_SPARC_MULDIV : 0)))
 101
 102 /* This yields a string that ld.so will use to load implementation
 103    specific libraries for optimization.  This is more specific in
 104    intent than poking at uname or /proc/cpuinfo. */
 105
 106 #define ELF_PLATFORM    (NULL)
 107
 108 #ifdef __KERNEL__
 109 #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
 110 #endif
 111
 112 #endif /* !(__ASMSPARC_ELF_H) */