include/asm-m68k/elf.h

   1 #ifndef __ASMm68k_ELF_H
   2 #define __ASMm68k_ELF_H
   3
   4 /*
   5  * ELF register definitions..
   6  */
   7
   8 #include <linux/config.h>
   9 #include <asm/ptrace.h>
  10 #include <asm/user.h>
  11
  12 typedef unsigned long elf_greg_t;
  13
  14 #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
  15 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  16
  17 typedef struct user_m68kfp_struct elf_fpregset_t;
  18
  19 /*
  20  * This is used to ensure we don't load something for the wrong architecture.
  21  */
  22 #define elf_check_arch(x) ((x)->e_machine == EM_68K)
  23
  24 /*
  25  * These are used to set parameters in the core dumps.
  26  */
  27 #define ELF_CLASS       ELFCLASS32
  28 #define ELF_DATA        ELFDATA2MSB
  29 #define ELF_ARCH        EM_68K
  30
  31 /* For SVR4/m68k the function pointer to be registered with `atexit' is
  32    passed in %a1.  Although my copy of the ABI has no such statement, it
  33    is actually used on ASV.  */
  34 #define ELF_PLAT_INIT(_r)       _r->a1 = 0
  35
  36 #define USE_ELF_CORE_DUMP
  37 #ifndef CONFIG_SUN3
  38 #define ELF_EXEC_PAGESIZE       4096
  39 #else
  40 #define ELF_EXEC_PAGESIZE       8192
  41 #endif
  42
  43 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  44    use of this is to invoke "./ld.so someprog" to test out a new version of
  45    the loader.  We need to make sure that it is out of the way of the program
  46    that it will "exec", and that there is sufficient room for the brk.  */
  47
  48 #ifndef CONFIG_SUN3
  49 #define ELF_ET_DYN_BASE         0xD0000000UL
  50 #else
  51 #define ELF_ET_DYN_BASE         0x0D800000UL
  52 #endif
  53
  54 #define ELF_CORE_COPY_REGS(pr_reg, regs)                                \
  55         /* Bleech. */                                                   \
  56         pr_reg[0] = regs->d1;                                           \
  57         pr_reg[1] = regs->d2;                                           \
  58         pr_reg[2] = regs->d3;                                           \
  59         pr_reg[3] = regs->d4;                                           \
  60         pr_reg[4] = regs->d5;                                           \
  61         pr_reg[7] = regs->a0;                                           \
  62         pr_reg[8] = regs->a1;                                           \
  63         pr_reg[9] = regs->a2;                                           \
  64         pr_reg[14] = regs->d0;                                          \
  65         pr_reg[15] = rdusp();                                           \
  66         pr_reg[16] = regs->orig_d0;                                     \
  67         pr_reg[17] = regs->sr;                                          \
  68         pr_reg[18] = regs->pc;                                          \
  69         pr_reg[19] = (regs->format << 12) | regs->vector;               \
  70         {                                                               \
  71           struct switch_stack *sw = ((struct switch_stack *)regs) - 1;  \
  72           pr_reg[5] = sw->d6;                                           \
  73           pr_reg[6] = sw->d7;                                           \
  74           pr_reg[10] = sw->a3;                                          \
  75           pr_reg[11] = sw->a4;                                          \
  76           pr_reg[12] = sw->a5;                                          \
  77           pr_reg[13] = sw->a6;                                          \
  78         }
  79
  80 /* This yields a mask that user programs can use to figure out what
  81    instruction set this cpu supports.  */
  82
  83 #define ELF_HWCAP       (0)
  84
  85 /* This yields a string that ld.so will use to load implementation
  86    specific libraries for optimization.  This is more specific in
  87    intent than poking at uname or /proc/cpuinfo.  */
  88
  89 #define ELF_PLATFORM  (NULL)
  90
  91 #ifdef __KERNEL__
  92 #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
  93 #endif
  94
  95 #endif