arch/m68k/include/asm/elf.h

   1 #ifndef __ASMm68k_ELF_H
   2 #define __ASMm68k_ELF_H
   3
   4 /*
   5  * ELF register definitions..
   6  */
   7
   8 #include <asm/ptrace.h>
   9 #include <asm/user.h>
  10
  11 /*
  12  * 68k ELF relocation types
  13  */
  14 #define R_68K_NONE      0
  15 #define R_68K_32        1
  16 #define R_68K_16        2
  17 #define R_68K_8         3
  18 #define R_68K_PC32      4
  19 #define R_68K_PC16      5
  20 #define R_68K_PC8       6
  21 #define R_68K_GOT32     7
  22 #define R_68K_GOT16     8
  23 #define R_68K_GOT8      9
  24 #define R_68K_GOT32O    10
  25 #define R_68K_GOT16O    11
  26 #define R_68K_GOT8O     12
  27 #define R_68K_PLT32     13
  28 #define R_68K_PLT16     14
  29 #define R_68K_PLT8      15
  30 #define R_68K_PLT32O    16
  31 #define R_68K_PLT16O    17
  32 #define R_68K_PLT8O     18
  33 #define R_68K_COPY      19
  34 #define R_68K_GLOB_DAT  20
  35 #define R_68K_JMP_SLOT  21
  36 #define R_68K_RELATIVE  22
  37
  38 typedef unsigned long elf_greg_t;
  39
  40 #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
  41 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  42
  43 typedef struct user_m68kfp_struct elf_fpregset_t;
  44
  45 /*
  46  * This is used to ensure we don't load something for the wrong architecture.
  47  */
  48 #define elf_check_arch(x) ((x)->e_machine == EM_68K)
  49
  50 /*
  51  * These are used to set parameters in the core dumps.
  52  */
  53 #define ELF_CLASS       ELFCLASS32
  54 #define ELF_DATA        ELFDATA2MSB
  55 #define ELF_ARCH        EM_68K
  56
  57 /* For SVR4/m68k the function pointer to be registered with `atexit' is
  58    passed in %a1.  Although my copy of the ABI has no such statement, it
  59    is actually used on ASV.  */
  60 #define ELF_PLAT_INIT(_r, load_addr)    _r->a1 = 0
  61
  62 #ifndef CONFIG_SUN3
  63 #define ELF_EXEC_PAGESIZE       4096
  64 #else
  65 #define ELF_EXEC_PAGESIZE       8192
  66 #endif
  67
  68 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  69    use of this is to invoke "./ld.so someprog" to test out a new version of
  70    the loader.  We need to make sure that it is out of the way of the program
  71    that it will "exec", and that there is sufficient room for the brk.  */
  72
  73 #ifndef CONFIG_SUN3
  74 #define ELF_ET_DYN_BASE         0xD0000000UL
  75 #else
  76 #define ELF_ET_DYN_BASE         0x0D800000UL
  77 #endif
  78
  79 #define ELF_CORE_COPY_REGS(pr_reg, regs)                                \
  80         /* Bleech. */                                                   \
  81         pr_reg[0] = regs->d1;                                           \
  82         pr_reg[1] = regs->d2;                                           \
  83         pr_reg[2] = regs->d3;                                           \
  84         pr_reg[3] = regs->d4;                                           \
  85         pr_reg[4] = regs->d5;                                           \
  86         pr_reg[7] = regs->a0;                                           \
  87         pr_reg[8] = regs->a1;                                           \
  88         pr_reg[9] = regs->a2;                                           \
  89         pr_reg[14] = regs->d0;                                          \
  90         pr_reg[15] = rdusp();                                           \
  91         pr_reg[16] = regs->orig_d0;                                     \
  92         pr_reg[17] = regs->sr;                                          \
  93         pr_reg[18] = regs->pc;                                          \
  94         pr_reg[19] = (regs->format << 12) | regs->vector;               \
  95         {                                                               \
  96           struct switch_stack *sw = ((struct switch_stack *)regs) - 1;  \
  97           pr_reg[5] = sw->d6;                                           \
  98           pr_reg[6] = sw->d7;                                           \
  99           pr_reg[10] = sw->a3;                                          \
 100           pr_reg[11] = sw->a4;                                          \
 101           pr_reg[12] = sw->a5;                                          \
 102           pr_reg[13] = sw->a6;                                          \
 103         }
 104
 105 /* This yields a mask that user programs can use to figure out what
 106    instruction set this cpu supports.  */
 107
 108 #define ELF_HWCAP       (0)
 109
 110 /* This yields a string that ld.so will use to load implementation
 111    specific libraries for optimization.  This is more specific in
 112    intent than poking at uname or /proc/cpuinfo.  */
 113
 114 #define ELF_PLATFORM  (NULL)
 115
 116 #define SET_PERSONALITY(ex) set_personality(PER_LINUX)
 117
 118 #endif