libffi/src/mips/ffitarget.h

   1 /* -----------------------------------------------------------------*-C-*-
   2    ffitarget.h - Copyright (c) 1996-2003  Red Hat, Inc.
   3    Target configuration macros for MIPS.
   4
   5    Permission is hereby granted, free of charge, to any person obtaining
   6    a copy of this software and associated documentation files (the
   7    ``Software''), to deal in the Software without restriction, including
   8    without limitation the rights to use, copy, modify, merge, publish,
   9    distribute, sublicense, and/or sell copies of the Software, and to
  10    permit persons to whom the Software is furnished to do so, subject to
  11    the following conditions:
  12
  13    The above copyright notice and this permission notice shall be included
  14    in all copies or substantial portions of the Software.
  15
  16    THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
  17    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19    NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23    DEALINGS IN THE SOFTWARE.
  24
  25    ----------------------------------------------------------------------- */
  26
  27 #ifndef LIBFFI_TARGET_H
  28 #define LIBFFI_TARGET_H
  29
  30 #ifdef linux
  31 # include <asm/sgidefs.h>
  32 #else
  33 # include <sgidefs.h>
  34 #endif
  35 #  ifndef _ABIN32
  36 #    define _ABIN32 _MIPS_SIM_NABI32
  37 #  endif
  38 #  ifndef _ABI64
  39 #    define _ABI64 _MIPS_SIM_ABI64
  40 #  endif
  41 #  ifndef _ABIO32
  42 #    define _ABIO32 _MIPS_SIM_ABI32
  43 #  endif
  44
  45 #if !defined(_MIPS_SIM)
  46 -- something is very wrong --
  47 #else
  48 #  if (_MIPS_SIM==_ABIN32 && defined(_ABIN32)) || (_MIPS_SIM==_ABI64 && defined(_ABI64))
  49 #    define FFI_MIPS_N32
  50 #  else
  51 #    if (_MIPS_SIM==_ABIO32 && defined(_ABIO32))
  52 #      define FFI_MIPS_O32
  53 #    else
  54 -- this is an unsupported platform --
  55 #    endif
  56 #  endif
  57 #endif
  58
  59 #ifdef FFI_MIPS_O32
  60 /* O32 stack frames have 32bit integer args */
  61 #  define FFI_SIZEOF_ARG    4
  62 #else
  63 /* N32 and N64 frames have 64bit integer args */
  64 #  define FFI_SIZEOF_ARG    8
  65 #  if _MIPS_SIM == _ABIN32
  66 #    define FFI_SIZEOF_JAVA_RAW  4
  67 #  endif
  68 #endif
  69
  70 #define FFI_FLAG_BITS 2
  71
  72 /* SGI's strange assembler requires that we multiply by 4 rather
  73    than shift left by FFI_FLAG_BITS */
  74
  75 #define FFI_ARGS_D   FFI_TYPE_DOUBLE
  76 #define FFI_ARGS_F   FFI_TYPE_FLOAT
  77 #define FFI_ARGS_DD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_DOUBLE
  78 #define FFI_ARGS_FF  FFI_TYPE_FLOAT * 4 +  FFI_TYPE_FLOAT
  79 #define FFI_ARGS_FD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_FLOAT
  80 #define FFI_ARGS_DF  FFI_TYPE_FLOAT * 4 + FFI_TYPE_DOUBLE
  81
  82 /* Needed for N32 structure returns */
  83 #define FFI_TYPE_SMALLSTRUCT  FFI_TYPE_UINT8
  84 #define FFI_TYPE_SMALLSTRUCT2 FFI_TYPE_SINT8
  85
  86 #if 0
  87 /* The SGI assembler can't handle this.. */
  88 #define FFI_TYPE_STRUCT_DD (( FFI_ARGS_DD ) << 4) + FFI_TYPE_STRUCT
  89 /* (and so on) */
  90 #else
  91 /* ...so we calculate these by hand! */
  92 #define FFI_TYPE_STRUCT_D      61
  93 #define FFI_TYPE_STRUCT_F      45
  94 #define FFI_TYPE_STRUCT_DD     253
  95 #define FFI_TYPE_STRUCT_FF     173
  96 #define FFI_TYPE_STRUCT_FD     237
  97 #define FFI_TYPE_STRUCT_DF     189
  98 #define FFI_TYPE_STRUCT_SMALL  93
  99 #define FFI_TYPE_STRUCT_SMALL2 109
 100
 101 /* and for n32 soft float, add 16 * 2^4 */
 102 #define FFI_TYPE_STRUCT_D_SOFT      317
 103 #define FFI_TYPE_STRUCT_F_SOFT      301
 104 #define FFI_TYPE_STRUCT_DD_SOFT     509
 105 #define FFI_TYPE_STRUCT_FF_SOFT     429
 106 #define FFI_TYPE_STRUCT_FD_SOFT     493
 107 #define FFI_TYPE_STRUCT_DF_SOFT     445
 108 #define FFI_TYPE_STRUCT_SOFT        16
 109 #endif
 110
 111 #ifdef LIBFFI_ASM
 112 #define v0 $2
 113 #define v1 $3
 114 #define a0 $4
 115 #define a1 $5
 116 #define a2 $6
 117 #define a3 $7
 118 #define a4 $8
 119 #define a5 $9
 120 #define a6 $10
 121 #define a7 $11
 122 #define t0 $8
 123 #define t1 $9
 124 #define t2 $10
 125 #define t3 $11
 126 #define t4 $12
 127 #define t5 $13
 128 #define t6 $14
 129 #define t7 $15
 130 #define t8 $24
 131 #define t9 $25
 132 #define ra $31
 133
 134 #ifdef FFI_MIPS_O32
 135 # define REG_L  lw
 136 # define REG_S  sw
 137 # define SUBU   subu
 138 # define ADDU   addu
 139 # define SRL    srl
 140 # define LI     li
 141 #else /* !FFI_MIPS_O32 */
 142 # define REG_L  ld
 143 # define REG_S  sd
 144 # define SUBU   dsubu
 145 # define ADDU   daddu
 146 # define SRL    dsrl
 147 # define LI     dli
 148 # if (_MIPS_SIM==_ABI64)
 149 #  define LA dla
 150 #  define EH_FRAME_ALIGN 3
 151 #  define FDE_ADDR_BYTES .8byte
 152 # else
 153 #  define LA la
 154 #  define EH_FRAME_ALIGN 2
 155 #  define FDE_ADDR_BYTES .4byte
 156 # endif /* _MIPS_SIM==_ABI64 */
 157 #endif /* !FFI_MIPS_O32 */
 158 #else /* !LIBFFI_ASM */
 159 # ifdef __GNUC__
 160 #  ifdef FFI_MIPS_O32
 161 /* O32 stack frames have 32bit integer args */
 162 typedef unsigned int     ffi_arg __attribute__((__mode__(__SI__)));
 163 typedef signed   int     ffi_sarg __attribute__((__mode__(__SI__)));
 164 #else
 165 /* N32 and N64 frames have 64bit integer args */
 166 typedef unsigned int     ffi_arg __attribute__((__mode__(__DI__)));
 167 typedef signed   int     ffi_sarg __attribute__((__mode__(__DI__)));
 168 #  endif
 169 # else
 170 #  ifdef FFI_MIPS_O32
 171 /* O32 stack frames have 32bit integer args */
 172 typedef __uint32_t ffi_arg;
 173 typedef __int32_t ffi_sarg;
 174 #  else
 175 /* N32 and N64 frames have 64bit integer args */
 176 typedef __uint64_t ffi_arg;
 177 typedef __int64_t ffi_sarg;
 178 #  endif
 179 # endif /* __GNUC__ */
 180
 181 typedef enum ffi_abi {
 182   FFI_FIRST_ABI = 0,
 183   FFI_O32,
 184   FFI_N32,
 185   FFI_N64,
 186   FFI_O32_SOFT_FLOAT,
 187   FFI_N32_SOFT_FLOAT,
 188   FFI_N64_SOFT_FLOAT,
 189
 190 #ifdef FFI_MIPS_O32
 191 #ifdef __mips_soft_float
 192   FFI_DEFAULT_ABI = FFI_O32_SOFT_FLOAT,
 193 #else
 194   FFI_DEFAULT_ABI = FFI_O32,
 195 #endif
 196 #else
 197 # if _MIPS_SIM==_ABI64
 198 #  ifdef __mips_soft_float
 199   FFI_DEFAULT_ABI = FFI_N64_SOFT_FLOAT,
 200 #  else
 201   FFI_DEFAULT_ABI = FFI_N64,
 202 #  endif
 203 # else
 204 #  ifdef __mips_soft_float
 205   FFI_DEFAULT_ABI = FFI_N32_SOFT_FLOAT,
 206 #  else
 207   FFI_DEFAULT_ABI = FFI_N32,
 208 #  endif
 209 # endif
 210 #endif
 211
 212   FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
 213 } ffi_abi;
 214
 215 #define FFI_EXTRA_CIF_FIELDS unsigned rstruct_flag
 216 #endif /* !LIBFFI_ASM */
 217
 218 /* ---- Definitions for closures ----------------------------------------- */
 219
 220 #if defined(FFI_MIPS_O32)
 221 #define FFI_CLOSURES 1
 222 #define FFI_TRAMPOLINE_SIZE 20
 223 #else
 224 /* N32/N64. */
 225 # define FFI_CLOSURES 1
 226 #if _MIPS_SIM==_ABI64
 227 #define FFI_TRAMPOLINE_SIZE 52
 228 #else
 229 #define FFI_TRAMPOLINE_SIZE 20
 230 #endif
 231 #endif /* FFI_MIPS_O32 */
 232 #define FFI_NATIVE_RAW_API 0
 233
 234 #endif
 235