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 /* TLS static relocations */
  38 #define R_68K_TLS_GD32          25
  39 #define R_68K_TLS_GD16          26
  40 #define R_68K_TLS_GD8           27
  41 #define R_68K_TLS_LDM32         28
  42 #define R_68K_TLS_LDM16         29
  43 #define R_68K_TLS_LDM8          30
  44 #define R_68K_TLS_LDO32         31
  45 #define R_68K_TLS_LDO16         32
  46 #define R_68K_TLS_LDO8          33
  47 #define R_68K_TLS_IE32          34
  48 #define R_68K_TLS_IE16          35
  49 #define R_68K_TLS_IE8           36
  50 #define R_68K_TLS_LE32          37
  51 #define R_68K_TLS_LE16          38
  52 #define R_68K_TLS_LE8           39
  53 /* TLS dynamic relocations */
  54 #define R_68K_TLS_DTPMOD32      40
  55 #define R_68K_TLS_DTPREL32      41
  56 #define R_68K_TLS_TPREL32       42
  57 typedef unsigned long elf_greg_t;
  58
  59 #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
  60 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  61
  62 typedef struct user_m68kfp_struct elf_fpregset_t;
  63
  64 /*
  65  * This is used to ensure we don't load something for the wrong architecture.
  66  */
  67 #define elf_check_arch(x) ((x)->e_machine == EM_68K)
  68
  69 /*
  70  * These are used to set parameters in the core dumps.
  71  */
  72 #define ELF_CLASS       ELFCLASS32
  73 #define ELF_DATA        ELFDATA2MSB
  74 #define ELF_ARCH        EM_68K
  75
  76 /* For SVR4/m68k the function pointer to be registered with `atexit' is
  77    passed in %a1.  Although my copy of the ABI has no such statement, it
  78    is actually used on ASV.  */
  79 #define ELF_PLAT_INIT(_r, load_addr)    _r->a1 = 0
  80
  81 // ColdFire cache requires at least 8 kB pages
  82
  83 #if !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
  84 #define ELF_EXEC_PAGESIZE       4096
  85 #else
  86 #define ELF_EXEC_PAGESIZE       8192
  87 #endif
  88
  89 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  90    use of this is to invoke "./ld.so someprog" to test out a new version of
  91    the loader.  We need to make sure that it is out of the way of the program
  92    that it will "exec", and that there is sufficient room for the brk.  */
  93
  94 #ifndef CONFIG_SUN3
  95 #define ELF_ET_DYN_BASE         0xD0000000UL
  96 #else
  97 #define ELF_ET_DYN_BASE         0x0D800000UL
  98 #endif
  99
 100 #define ELF_CORE_COPY_REGS(pr_reg, regs)                                \
 101         /* Bleech. */                                                   \
 102         pr_reg[0] = regs->d1;                                           \
 103         pr_reg[1] = regs->d2;                                           \
 104         pr_reg[2] = regs->d3;                                           \
 105         pr_reg[3] = regs->d4;                                           \
 106         pr_reg[4] = regs->d5;                                           \
 107         pr_reg[7] = regs->a0;                                           \
 108         pr_reg[8] = regs->a1;                                           \
 109         pr_reg[9] = regs->a2;                                           \
 110         pr_reg[14] = regs->d0;                                          \
 111         pr_reg[15] = rdusp();                                           \
 112         pr_reg[16] = regs->orig_d0;                                     \
 113         pr_reg[17] = regs->sr;                                          \
 114         pr_reg[18] = regs->pc;                                          \
 115         pr_reg[19] = (regs->format << 12) | regs->vector;               \
 116         {                                                               \
 117           struct switch_stack *sw = ((struct switch_stack *)regs) - 1;  \
 118           pr_reg[5] = sw->d6;                                           \
 119           pr_reg[6] = sw->d7;                                           \
 120           pr_reg[10] = sw->a3;                                          \
 121           pr_reg[11] = sw->a4;                                          \
 122           pr_reg[12] = sw->a5;                                          \
 123           pr_reg[13] = sw->a6;                                          \
 124         }
 125
 126 /* This yields a mask that user programs can use to figure out what
 127    instruction set this cpu supports.  */
 128
 129 #define ELF_HWCAP       (0)
 130
 131 /* This yields a string that ld.so will use to load implementation
 132    specific libraries for optimization.  This is more specific in
 133    intent than poking at uname or /proc/cpuinfo.  */
 134
 135 #define ELF_PLATFORM  (NULL)
 136
 137 #define SET_PERSONALITY(ex) set_personality(PER_LINUX)
 138
 139 /*
 140  * VDSO
 141  */
 142 #ifdef CONFIG_VSYSCALL
 143 extern unsigned int vdso_enabled;
 144
 145 #define VDSO_BASE               ((unsigned long)current->mm->context.vdso)
 146 #define VDSO_SYM(x)             (VDSO_BASE + (unsigned long)(x))
 147
 148 #define VSYSCALL_AUX_ENT                                        \
 149         if (vdso_enabled)                                       \
 150                 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE);
 151
 152 /* additional pages */
 153 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 154
 155 struct linux_binprm;
 156 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 157                                        int executable_stack);
 158
 159 #else
 160 /* no VSYSCALL_AUX_ENT */
 161 #define VSYSCALL_AUX_ENT
 162 #endif
 163
 164 #define ARCH_DLINFO                                             \
 165 do {                                                            \
 166         /* vsyscall entry */                                    \
 167         VSYSCALL_AUX_ENT;                                       \
 168 } while (0);
 169
 170
 171 #endif