arch/sh/include/asm/elf.h

   1 #ifndef __ASM_SH_ELF_H
   2 #define __ASM_SH_ELF_H
   3
   4 #include <linux/utsname.h>
   5 #include <asm/auxvec.h>
   6 #include <asm/ptrace.h>
   7 #include <asm/user.h>
   8
   9 /* ELF header e_flags defines */
  10 #define EF_SH_PIC               0x100   /* -fpic */
  11 #define EF_SH_FDPIC             0x8000  /* -mfdpic */
  12
  13 /* SH (particularly SHcompact) relocation types  */
  14 #define R_SH_NONE               0
  15 #define R_SH_DIR32              1
  16 #define R_SH_REL32              2
  17 #define R_SH_DIR8WPN            3
  18 #define R_SH_IND12W             4
  19 #define R_SH_DIR8WPL            5
  20 #define R_SH_DIR8WPZ            6
  21 #define R_SH_DIR8BP             7
  22 #define R_SH_DIR8W              8
  23 #define R_SH_DIR8L              9
  24 #define R_SH_SWITCH16           25
  25 #define R_SH_SWITCH32           26
  26 #define R_SH_USES               27
  27 #define R_SH_COUNT              28
  28 #define R_SH_ALIGN              29
  29 #define R_SH_CODE               30
  30 #define R_SH_DATA               31
  31 #define R_SH_LABEL              32
  32 #define R_SH_SWITCH8            33
  33 #define R_SH_GNU_VTINHERIT      34
  34 #define R_SH_GNU_VTENTRY        35
  35 #define R_SH_TLS_GD_32          144
  36 #define R_SH_TLS_LD_32          145
  37 #define R_SH_TLS_LDO_32         146
  38 #define R_SH_TLS_IE_32          147
  39 #define R_SH_TLS_LE_32          148
  40 #define R_SH_TLS_DTPMOD32       149
  41 #define R_SH_TLS_DTPOFF32       150
  42 #define R_SH_TLS_TPOFF32        151
  43 #define R_SH_GOT32              160
  44 #define R_SH_PLT32              161
  45 #define R_SH_COPY               162
  46 #define R_SH_GLOB_DAT           163
  47 #define R_SH_JMP_SLOT           164
  48 #define R_SH_RELATIVE           165
  49 #define R_SH_GOTOFF             166
  50 #define R_SH_GOTPC              167
  51
  52 /* FDPIC relocs */
  53 #define R_SH_GOT20              70
  54 #define R_SH_GOTOFF20           71
  55 #define R_SH_GOTFUNCDESC        72
  56 #define R_SH_GOTFUNCDESC20      73
  57 #define R_SH_GOTOFFFUNCDESC     74
  58 #define R_SH_GOTOFFFUNCDESC20   75
  59 #define R_SH_FUNCDESC           76
  60 #define R_SH_FUNCDESC_VALUE     77
  61
  62 #if 0 /* XXX - later .. */
  63 #define R_SH_GOT20              198
  64 #define R_SH_GOTOFF20           199
  65 #define R_SH_GOTFUNCDESC        200
  66 #define R_SH_GOTFUNCDESC20      201
  67 #define R_SH_GOTOFFFUNCDESC     202
  68 #define R_SH_GOTOFFFUNCDESC20   203
  69 #define R_SH_FUNCDESC           204
  70 #define R_SH_FUNCDESC_VALUE     205
  71 #endif
  72
  73 /* SHmedia relocs */
  74 #define R_SH_IMM_LOW16          246
  75 #define R_SH_IMM_LOW16_PCREL    247
  76 #define R_SH_IMM_MEDLOW16       248
  77 #define R_SH_IMM_MEDLOW16_PCREL 249
  78 /* Keep this the last entry.  */
  79 #define R_SH_NUM                256
  80
  81 /*
  82  * ELF register definitions..
  83  */
  84
  85 typedef unsigned long elf_greg_t;
  86
  87 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
  88 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  89
  90 typedef struct user_fpu_struct elf_fpregset_t;
  91
  92 /*
  93  * These are used to set parameters in the core dumps.
  94  */
  95 #define ELF_CLASS       ELFCLASS32
  96 #ifdef __LITTLE_ENDIAN__
  97 #define ELF_DATA        ELFDATA2LSB
  98 #else
  99 #define ELF_DATA        ELFDATA2MSB
 100 #endif
 101 #define ELF_ARCH        EM_SH
 102
 103 #ifdef __KERNEL__
 104 /*
 105  * This is used to ensure we don't load something for the wrong architecture.
 106  */
 107 #define elf_check_arch(x)               ((x)->e_machine == EM_SH)
 108 #define elf_check_fdpic(x)              ((x)->e_flags & EF_SH_FDPIC)
 109 #define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC)
 110
 111 /*
 112  * Enable dump using regset.
 113  * This covers all of general/DSP/FPU regs.
 114  */
 115 #define CORE_DUMP_USE_REGSET
 116
 117 #define ELF_FDPIC_CORE_EFLAGS   EF_SH_FDPIC
 118 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 119
 120 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 121    use of this is to invoke "./ld.so someprog" to test out a new version of
 122    the loader.  We need to make sure that it is out of the way of the program
 123    that it will "exec", and that there is sufficient room for the brk.  */
 124
 125 #define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
 126
 127 #define ELF_CORE_COPY_REGS(_dest,_regs)                         \
 128         memcpy((char *) &_dest, (char *) _regs,                 \
 129                sizeof(struct pt_regs));
 130
 131 /* This yields a mask that user programs can use to figure out what
 132    instruction set this CPU supports.  This could be done in user space,
 133    but it's not easy, and we've already done it here.  */
 134
 135 #define ELF_HWCAP       (boot_cpu_data.flags)
 136
 137 /* This yields a string that ld.so will use to load implementation
 138    specific libraries for optimization.  This is more specific in
 139    intent than poking at uname or /proc/cpuinfo.
 140
 141    For the moment, we have only optimizations for the Intel generations,
 142    but that could change... */
 143
 144 #define ELF_PLATFORM    (utsname()->machine)
 145
 146 #ifdef __SH5__
 147 #define ELF_PLAT_INIT(_r, load_addr) \
 148   do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
 149        _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
 150        _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
 151        _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \
 152        _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \
 153        _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \
 154        _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \
 155        _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \
 156        _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \
 157        _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \
 158        _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \
 159        _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \
 160        _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \
 161        _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \
 162        _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \
 163        _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \
 164        _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \
 165        _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \
 166        _r->sr = SR_FD | SR_MMU; } while (0)
 167 #else
 168 #define ELF_PLAT_INIT(_r, load_addr) \
 169   do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
 170        _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
 171        _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
 172        _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
 173        _r->sr = SR_FD; } while (0)
 174
 175 #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr,       \
 176                             _dynamic_addr)                              \
 177 do {                                                                    \
 178         _r->regs[0]     = 0;                                            \
 179         _r->regs[1]     = 0;                                            \
 180         _r->regs[2]     = 0;                                            \
 181         _r->regs[3]     = 0;                                            \
 182         _r->regs[4]     = 0;                                            \
 183         _r->regs[5]     = 0;                                            \
 184         _r->regs[6]     = 0;                                            \
 185         _r->regs[7]     = 0;                                            \
 186         _r->regs[8]     = _exec_map_addr;                               \
 187         _r->regs[9]     = _interp_map_addr;                             \
 188         _r->regs[10]    = _dynamic_addr;                                \
 189         _r->regs[11]    = 0;                                            \
 190         _r->regs[12]    = 0;                                            \
 191         _r->regs[13]    = 0;                                            \
 192         _r->regs[14]    = 0;                                            \
 193         _r->sr          = SR_FD;                                        \
 194 } while (0)
 195 #endif
 196
 197 #define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT)
 198
 199 #ifdef CONFIG_VSYSCALL
 200 /* vDSO has arch_setup_additional_pages */
 201 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES
 202 struct linux_binprm;
 203 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 204                                        int uses_interp);
 205
 206 extern unsigned int vdso_enabled;
 207 extern void __kernel_vsyscall;
 208
 209 #define VDSO_BASE               ((unsigned long)current->mm->context.vdso)
 210 #define VDSO_SYM(x)             (VDSO_BASE + (unsigned long)(x))
 211
 212 #define VSYSCALL_AUX_ENT                                        \
 213         if (vdso_enabled)                                       \
 214                 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE);        \
 215         else                                                    \
 216                 NEW_AUX_ENT(AT_IGNORE, 0);
 217 #else
 218 #define VSYSCALL_AUX_ENT
 219 #endif /* CONFIG_VSYSCALL */
 220
 221 #ifdef CONFIG_SH_FPU
 222 #define FPU_AUX_ENT     NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT)
 223 #else
 224 #define FPU_AUX_ENT     NEW_AUX_ENT(AT_IGNORE, 0)
 225 #endif
 226
 227 extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
 228
 229 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
 230 #define ARCH_DLINFO                                             \
 231 do {                                                            \
 232         /* Optional FPU initialization */                       \
 233         FPU_AUX_ENT;                                            \
 234                                                                 \
 235         /* Optional vsyscall entry */                           \
 236         VSYSCALL_AUX_ENT;                                       \
 237                                                                 \
 238         /* Cache desc */                                        \
 239         NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape);        \
 240         NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape);        \
 241         NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape);          \
 242 } while (0)
 243
 244 #endif /* __KERNEL__ */
 245 #endif /* __ASM_SH_ELF_H */