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, EXPRESS
  17    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  19    IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20    OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21    ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22    OTHER DEALINGS IN THE SOFTWARE.
  23
  24    ----------------------------------------------------------------------- */
  25
  26 #ifndef LIBFFI_TARGET_H
  27 #define LIBFFI_TARGET_H
  28
  29 #ifndef LIBFFI_ASM
  30 #include <sgidefs.h>
  31 #endif
  32
  33 #if !defined(_MIPS_SIM)
  34 -- something is very wrong --
  35 #else
  36 #  if (_MIPS_SIM==_ABIN32 && defined(_ABIN32)) || (_MIPS_SIM==_ABI64 && defined(_ABI64))
  37 #    define FFI_MIPS_N32
  38 #  else
  39 #    if _MIPS_SIM==_ABIO32 && defined(_ABIO32)
  40 #      define FFI_MIPS_O32
  41 #    else
  42 -- this is an unsupported platform --
  43 #    endif
  44 #  endif
  45 #endif
  46
  47 #ifdef FFI_MIPS_O32
  48 /* O32 stack frames have 32bit integer args */
  49 #define FFI_SIZEOF_ARG         4
  50 #else
  51 /* N32 and N64 frames have 64bit integer args */
  52 #define FFI_SIZEOF_ARG         8
  53 #endif
  54
  55 #define FFI_FLAG_BITS 2
  56
  57 /* SGI's strange assembler requires that we multiply by 4 rather
  58    than shift left by FFI_FLAG_BITS */
  59
  60 #define FFI_ARGS_D   FFI_TYPE_DOUBLE
  61 #define FFI_ARGS_F   FFI_TYPE_FLOAT
  62 #define FFI_ARGS_DD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_DOUBLE
  63 #define FFI_ARGS_FF  FFI_TYPE_FLOAT * 4 +  FFI_TYPE_FLOAT
  64 #define FFI_ARGS_FD  FFI_TYPE_DOUBLE * 4 + FFI_TYPE_FLOAT
  65 #define FFI_ARGS_DF  FFI_TYPE_FLOAT * 4 + FFI_TYPE_DOUBLE
  66
  67 /* Needed for N32 structure returns */
  68 #define FFI_TYPE_SMALLSTRUCT  FFI_TYPE_UINT8
  69 #define FFI_TYPE_SMALLSTRUCT2 FFI_TYPE_SINT8
  70
  71 #if 0
  72 /* The SGI assembler can't handle this.. */
  73 #define FFI_TYPE_STRUCT_DD (( FFI_ARGS_DD ) << 4) + FFI_TYPE_STRUCT
  74 /* (and so on) */
  75 #else
  76 /* ...so we calculate these by hand! */
  77 #define FFI_TYPE_STRUCT_D      61
  78 #define FFI_TYPE_STRUCT_F      45
  79 #define FFI_TYPE_STRUCT_DD     253
  80 #define FFI_TYPE_STRUCT_FF     173
  81 #define FFI_TYPE_STRUCT_FD     237
  82 #define FFI_TYPE_STRUCT_DF     189
  83 #define FFI_TYPE_STRUCT_SMALL  93
  84 #define FFI_TYPE_STRUCT_SMALL2 109
  85 #endif
  86
  87 #ifdef LIBFFI_ASM
  88 #define v0 $2
  89 #define v1 $3
  90 #define a0 $4
  91 #define a1 $5
  92 #define a2 $6
  93 #define a3 $7
  94 #define a4 $8
  95 #define a5 $9
  96 #define a6 $10
  97 #define a7 $11
  98 #define t0 $8
  99 #define t1 $9
 100 #define t2 $10
 101 #define t3 $11
 102 #define t4 $12
 103 #define t5 $13
 104 #define t6 $14
 105 #define t7 $15
 106 #define t8 $24
 107 #define t9 $25
 108 #define ra $31
 109
 110 #ifdef FFI_MIPS_O32
 111 #define REG_L   lw
 112 #define REG_S   sw
 113 #define SUBU    subu
 114 #define ADDU    addu
 115 #define SRL     srl
 116 #define LI      li
 117 #else /* !FFI_MIPS_O32 */
 118 #define REG_L   ld
 119 #define REG_S   sd
 120 #define SUBU    dsubu
 121 #define ADDU    daddu
 122 #define SRL     dsrl
 123 #define LI      dli
 124 #endif /* !FFI_MIPS_O32 */
 125 #else /* !LIBFFI_ASM */
 126 #ifdef FFI_MIPS_O32
 127 /* O32 stack frames have 32bit integer args */
 128 typedef unsigned int     ffi_arg __attribute__((__mode__(__SI__)));
 129 typedef signed   int     ffi_sarg __attribute__((__mode__(__SI__)));
 130 #else
 131 /* N32 and N64 frames have 64bit integer args */
 132 typedef unsigned int     ffi_arg __attribute__((__mode__(__DI__)));
 133 typedef signed   int     ffi_sarg __attribute__((__mode__(__DI__)));
 134 #endif
 135
 136 typedef enum ffi_abi {
 137   FFI_FIRST_ABI = 0,
 138   FFI_O32,
 139   FFI_N32,
 140   FFI_N64,
 141
 142 #ifdef FFI_MIPS_O32
 143   FFI_DEFAULT_ABI = FFI_O32,
 144 #else
 145   FFI_DEFAULT_ABI = FFI_N32,
 146 #endif
 147
 148   FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
 149 } ffi_abi;
 150
 151 #define FFI_EXTRA_CIF_FIELDS unsigned rstruct_flag
 152 #endif /* !LIBFFI_ASM */
 153
 154 /* ---- Definitions for closures ----------------------------------------- */
 155
 156 #define FFI_CLOSURES 0
 157 #define FFI_NATIVE_RAW_API 0
 158
 159 #endif
 160