libffi/src/mips/ffitarget.h

   1 /* -----------------------------------------------------------------*-C-*-
   2    ffitarget.h - Copyright (c) 2012  Anthony Green
   3                  Copyright (c) 1996-2003  Red Hat, Inc.
   4    Target configuration macros for MIPS.
   5
   6    Permission is hereby granted, free of charge, to any person obtaining
   7    a copy of this software and associated documentation files (the
   8    ``Software''), to deal in the Software without restriction, including
   9    without limitation the rights to use, copy, modify, merge, publish,
  10    distribute, sublicense, and/or sell copies of the Software, and to
  11    permit persons to whom the Software is furnished to do so, subject to
  12    the following conditions:
  13
  14    The above copyright notice and this permission notice shall be included
  15    in all copies or substantial portions of the Software.
  16
  17    THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
  18    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20    NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24    DEALINGS IN THE SOFTWARE.
  25
  26    ----------------------------------------------------------------------- */
  27
  28 #ifndef LIBFFI_TARGET_H
  29 #define LIBFFI_TARGET_H
  30
  31 #ifndef LIBFFI_H
  32 #error "Please do not include ffitarget.h directly into your source.  Use ffi.h instead."
  33 #endif
  34
  35 #ifdef linux
  36 # include <asm/sgidefs.h>
  37 #elif defined(__rtems__)
  38 /*
  39  * Subprogram calling convention - copied from sgidefs.h
  40  */
  41 #define _MIPS_SIM_ABI32         1
  42 #define _MIPS_SIM_NABI32        2
  43 #define _MIPS_SIM_ABI64         3
  44 #elif !defined(__OpenBSD__)
  45 # include <sgidefs.h>
  46 #endif
  47
  48 #  ifndef _ABIN32
  49 #    define _ABIN32 _MIPS_SIM_NABI32
  50 #  endif
  51 #  ifndef _ABI64
  52 #    define _ABI64 _MIPS_SIM_ABI64
  53 #  endif
  54 #  ifndef _ABIO32
  55 #    define _ABIO32 _MIPS_SIM_ABI32
  56 #  endif
  57
  58 #if !defined(_MIPS_SIM)
  59 # error -- something is very wrong --
  60 #else
  61 #  if (_MIPS_SIM==_ABIN32 && defined(_ABIN32)) || (_MIPS_SIM==_ABI64 && defined(_ABI64))
  62 #    define FFI_MIPS_N32
  63 #  else
  64 #    if (_MIPS_SIM==_ABIO32 && defined(_ABIO32))
  65 #      define FFI_MIPS_O32
  66 #    else
  67 #     error -- this is an unsupported platform --
  68 #    endif
  69 #  endif
  70 #endif
  71
  72 #ifdef FFI_MIPS_O32
  73 /* O32 stack frames have 32bit integer args */
  74 #  define FFI_SIZEOF_ARG    4
  75 #else
  76 /* N32 and N64 frames have 64bit integer args */
  77 #  define FFI_SIZEOF_ARG    8
  78 #  if _MIPS_SIM == _ABIN32
  79 #    define FFI_SIZEOF_JAVA_RAW  4
  80 #  endif
  81 #endif
  82
  83 #define FFI_FLAG_BITS 2
  84
  85 /* SGI's strange assembler requires that we multiply by 4 rather
  86    than shift left by FFI_FLAG_BITS */
  87
  88 #define FFI_ARGS_D   FFI_TYPE_DOUBLE
  89 #define FFI_ARGS_F   FFI_TYPE_FLOAT
  90 #define FFI_ARGS_DD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_DOUBLE
  91 #define FFI_ARGS_FF  FFI_TYPE_FLOAT * 4 +  FFI_TYPE_FLOAT
  92 #define FFI_ARGS_FD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_FLOAT
  93 #define FFI_ARGS_DF  FFI_TYPE_FLOAT * 4 + FFI_TYPE_DOUBLE
  94
  95 /* Needed for N32 structure returns */
  96 #define FFI_TYPE_SMALLSTRUCT  FFI_TYPE_UINT8
  97 #define FFI_TYPE_SMALLSTRUCT2 FFI_TYPE_SINT8
  98
  99 #if 0
 100 /* The SGI assembler can't handle this.. */
 101 #define FFI_TYPE_STRUCT_DD (( FFI_ARGS_DD ) << 4) + FFI_TYPE_STRUCT
 102 /* (and so on) */
 103 #else
 104 /* ...so we calculate these by hand! */
 105 #define FFI_TYPE_STRUCT_D      61
 106 #define FFI_TYPE_STRUCT_F      45
 107 #define FFI_TYPE_STRUCT_DD     253
 108 #define FFI_TYPE_STRUCT_FF     173
 109 #define FFI_TYPE_STRUCT_FD     237
 110 #define FFI_TYPE_STRUCT_DF     189
 111 #define FFI_TYPE_STRUCT_SMALL  93
 112 #define FFI_TYPE_STRUCT_SMALL2 109
 113
 114 /* and for n32 soft float, add 16 * 2^4 */
 115 #define FFI_TYPE_STRUCT_D_SOFT      317
 116 #define FFI_TYPE_STRUCT_F_SOFT      301
 117 #define FFI_TYPE_STRUCT_DD_SOFT     509
 118 #define FFI_TYPE_STRUCT_FF_SOFT     429
 119 #define FFI_TYPE_STRUCT_FD_SOFT     493
 120 #define FFI_TYPE_STRUCT_DF_SOFT     445
 121 #define FFI_TYPE_STRUCT_SOFT        16
 122 #endif
 123
 124 #ifdef LIBFFI_ASM
 125 #define v0 $2
 126 #define v1 $3
 127 #define a0 $4
 128 #define a1 $5
 129 #define a2 $6
 130 #define a3 $7
 131 #define a4 $8
 132 #define a5 $9
 133 #define a6 $10
 134 #define a7 $11
 135 #define t0 $8
 136 #define t1 $9
 137 #define t2 $10
 138 #define t3 $11
 139 #define t4 $12
 140 #define t5 $13
 141 #define t6 $14
 142 #define t7 $15
 143 #define t8 $24
 144 #define t9 $25
 145 #define ra $31
 146
 147 #ifdef FFI_MIPS_O32
 148 # define REG_L  lw
 149 # define REG_S  sw
 150 # define SUBU   subu
 151 # define ADDU   addu
 152 # define SRL    srl
 153 # define LI     li
 154 #else /* !FFI_MIPS_O32 */
 155 # define REG_L  ld
 156 # define REG_S  sd
 157 # define SUBU   dsubu
 158 # define ADDU   daddu
 159 # define SRL    dsrl
 160 # define LI     dli
 161 # if (_MIPS_SIM==_ABI64)
 162 #  define LA dla
 163 #  define EH_FRAME_ALIGN 3
 164 #  define FDE_ADDR_BYTES .8byte
 165 # else
 166 #  define LA la
 167 #  define EH_FRAME_ALIGN 2
 168 #  define FDE_ADDR_BYTES .4byte
 169 # endif /* _MIPS_SIM==_ABI64 */
 170 #endif /* !FFI_MIPS_O32 */
 171 #else /* !LIBFFI_ASM */
 172 # ifdef __GNUC__
 173 #  ifdef FFI_MIPS_O32
 174 /* O32 stack frames have 32bit integer args */
 175 typedef unsigned int     ffi_arg __attribute__((__mode__(__SI__)));
 176 typedef signed   int     ffi_sarg __attribute__((__mode__(__SI__)));
 177 #else
 178 /* N32 and N64 frames have 64bit integer args */
 179 typedef unsigned int     ffi_arg __attribute__((__mode__(__DI__)));
 180 typedef signed   int     ffi_sarg __attribute__((__mode__(__DI__)));
 181 #  endif
 182 # else
 183 #  ifdef FFI_MIPS_O32
 184 /* O32 stack frames have 32bit integer args */
 185 typedef __uint32_t ffi_arg;
 186 typedef __int32_t ffi_sarg;
 187 #  else
 188 /* N32 and N64 frames have 64bit integer args */
 189 typedef __uint64_t ffi_arg;
 190 typedef __int64_t ffi_sarg;
 191 #  endif
 192 # endif /* __GNUC__ */
 193
 194 typedef enum ffi_abi {
 195   FFI_FIRST_ABI = 0,
 196   FFI_O32,
 197   FFI_N32,
 198   FFI_N64,
 199   FFI_O32_SOFT_FLOAT,
 200   FFI_N32_SOFT_FLOAT,
 201   FFI_N64_SOFT_FLOAT,
 202   FFI_LAST_ABI,
 203
 204 #ifdef FFI_MIPS_O32
 205 #ifdef __mips_soft_float
 206   FFI_DEFAULT_ABI = FFI_O32_SOFT_FLOAT
 207 #else
 208   FFI_DEFAULT_ABI = FFI_O32
 209 #endif
 210 #else
 211 # if _MIPS_SIM==_ABI64
 212 #  ifdef __mips_soft_float
 213   FFI_DEFAULT_ABI = FFI_N64_SOFT_FLOAT
 214 #  else
 215   FFI_DEFAULT_ABI = FFI_N64
 216 #  endif
 217 # else
 218 #  ifdef __mips_soft_float
 219   FFI_DEFAULT_ABI = FFI_N32_SOFT_FLOAT
 220 #  else
 221   FFI_DEFAULT_ABI = FFI_N32
 222 #  endif
 223 # endif
 224 #endif
 225 } ffi_abi;
 226
 227 #define FFI_EXTRA_CIF_FIELDS unsigned rstruct_flag
 228 #endif /* !LIBFFI_ASM */
 229
 230 /* ---- Definitions for closures ----------------------------------------- */
 231
 232 #if defined(FFI_MIPS_O32)
 233 #define FFI_CLOSURES 1
 234 #define FFI_TRAMPOLINE_SIZE 20
 235 #else
 236 /* N32/N64. */
 237 # define FFI_CLOSURES 1
 238 #if _MIPS_SIM==_ABI64
 239 #define FFI_TRAMPOLINE_SIZE 52
 240 #else
 241 #define FFI_TRAMPOLINE_SIZE 20
 242 #endif
 243 #endif /* FFI_MIPS_O32 */
 244 #define FFI_NATIVE_RAW_API 0
 245
 246 #endif
 247