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