include/asm-m68knommu/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 #define USE_ELF_CORE_DUMP
  63 #define ELF_EXEC_PAGESIZE       4096
  64
  65 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  66    use of this is to invoke "./ld.so someprog" to test out a new version of
  67    the loader.  We need to make sure that it is out of the way of the program
  68    that it will "exec", and that there is sufficient room for the brk.  */
  69
  70 #define ELF_ET_DYN_BASE         0xD0000000UL
  71
  72 #define ELF_CORE_COPY_REGS(pr_reg, regs)                                \
  73         /* Bleech. */                                                   \
  74         pr_reg[0] = regs->d1;                                           \
  75         pr_reg[1] = regs->d2;                                           \
  76         pr_reg[2] = regs->d3;                                           \
  77         pr_reg[3] = regs->d4;                                           \
  78         pr_reg[4] = regs->d5;                                           \
  79         pr_reg[7] = regs->a0;                                           \
  80         pr_reg[8] = regs->a1;                                           \
  81         pr_reg[14] = regs->d0;                                          \
  82         pr_reg[15] = rdusp();                                           \
  83         pr_reg[16] = 0 /* regs->orig_d0 */;                             \
  84         pr_reg[17] = regs->sr;                                          \
  85         pr_reg[18] = regs->pc;                                          \
  86         /* pr_reg[19] = (regs->format << 12) | regs->vector; */         \
  87         {                                                               \
  88           struct switch_stack *sw = ((struct switch_stack *)regs) - 1;  \
  89           pr_reg[5] = sw->d6;                                           \
  90           pr_reg[6] = sw->d7;                                           \
  91           pr_reg[10] = sw->a3;                                          \
  92           pr_reg[11] = sw->a4;                                          \
  93           pr_reg[12] = sw->a5;                                          \
  94           pr_reg[13] = sw->a6;                                          \
  95         }
  96
  97 /* This yields a mask that user programs can use to figure out what
  98    instruction set this cpu supports.  */
  99
 100 #define ELF_HWCAP       (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