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1 /*
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2
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3 Package: dyncall
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4 Library: dyncall
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5 File: dyncall/dyncall_callvm_x64.c
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6 Description:
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7 License:
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8
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9 Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>,
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10 Tassilo Philipp <tphilipp@potion-studios.com>
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11
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12 Permission to use, copy, modify, and distribute this software for any
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13 purpose with or without fee is hereby granted, provided that the above
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14 copyright notice and this permission notice appear in all copies.
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15
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16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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23
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24 */
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25
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26
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27
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28
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29 /* MS Windows x64 calling convention, AMD64 SystemV ABI. */
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30
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31
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32 #include "dyncall_callvm_x64.h"
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33 #include "dyncall_alloc.h"
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34 #include "dyncall_struct.h"
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35
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36 static DCCallVM* dc_callvm_new_x64(DCCallVM_vt* vt, DCsize size)
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37 {
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38 DCCallVM_x64* self = (DCCallVM_x64*)dcAllocMem(sizeof(DCCallVM_x64)+size);
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39
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40 dc_callvm_base_init(&self->mInterface, vt);
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41
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42 /* Since we store register parameters in DCCallVM_x64 directly, adjust the stack size. */
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43 size -= sizeof(DCRegData_x64);
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44 size = (((signed long)size) < 0) ? 0 : size;
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45
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46
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47 self->mRegCount.i = self->mRegCount.f = 0;
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48
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49 dcVecInit(&self->mVecHead, size);
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50 return (DCCallVM*)self;
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51 }
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52
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53
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54 static void dc_callvm_free_x64(DCCallVM* in_self)
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55 {
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56 dcFreeMem(in_self);
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57 }
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58
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59
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60 static void dc_callvm_reset_x64(DCCallVM* in_self)
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61 {
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62 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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63 dcVecReset(&self->mVecHead);
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64 self->mRegCount.i = self->mRegCount.f = 0;
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65 }
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66
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67
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68 static void dc_callvm_mode_x64(DCCallVM* self, DCint mode)
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69 {
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70 switch(mode) {
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71 case DC_CALL_C_DEFAULT:
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72 case DC_CALL_C_ELLIPSIS:
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73 break;
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74 default:
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75 self->mError = DC_ERROR_UNSUPPORTED_MODE;
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76 break;
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77 }
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78 }
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79
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80
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81 static void dc_callvm_argLongLong_x64(DCCallVM* in_self, DClonglong x)
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82 {
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83 /* A long long always has 64 bits on the supported x64 platforms (lp64 on unix and llp64 on windows). */
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84 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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85 if(self->mRegCount.i < numIntRegs)
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86 self->mRegData.i[self->mRegCount.i++] = x;
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87 else
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88 dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong));
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89 }
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90
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91
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92 static void dc_callvm_argBool_x64(DCCallVM* in_self, DCbool x)
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93 {
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94 dc_callvm_argLongLong_x64(in_self, (DClonglong)x);
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95 }
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96
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97
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98 static void dc_callvm_argChar_x64(DCCallVM* in_self, DCchar x)
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99 {
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100 dc_callvm_argLongLong_x64(in_self, x);
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101 }
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102
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103
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104 static void dc_callvm_argShort_x64(DCCallVM* in_self, DCshort x)
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105 {
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106 dc_callvm_argLongLong_x64(in_self, x);
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107 }
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108
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109
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110 static void dc_callvm_argInt_x64(DCCallVM* in_self, DCint x)
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111 {
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112 dc_callvm_argLongLong_x64(in_self, x);
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113 }
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114
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115
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116 static void dc_callvm_argLong_x64(DCCallVM* in_self, DClong x)
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117 {
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118 dc_callvm_argLongLong_x64(in_self, x);
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119 }
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120
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121
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122 static void dc_callvm_argFloat_x64(DCCallVM* in_self, DCfloat x)
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123 {
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124 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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125
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126 /* Although not promoted to doubles, floats are stored with 64bits in this API.*/
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127 union {
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128 DCdouble d;
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129 DCfloat f;
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130 } f;
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131 f.f = x;
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132
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133 if(self->mRegCount.f < numFloatRegs)
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134 *(DCfloat*)&self->mRegData.f[self->mRegCount.f++] = x;
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135 else
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136 dcVecAppend(&self->mVecHead, &f.f, sizeof(DCdouble));
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137 }
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138
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139
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140 static void dc_callvm_argDouble_x64(DCCallVM* in_self, DCdouble x)
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141 {
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142 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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143 if(self->mRegCount.f < numFloatRegs)
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144 self->mRegData.f[self->mRegCount.f++] = x;
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145 else
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146 dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble));
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147 }
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148
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149
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150 static void dc_callvm_argPointer_x64(DCCallVM* in_self, DCpointer x)
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151 {
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152 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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153 if(self->mRegCount.i < numIntRegs)
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154 *(DCpointer*)&self->mRegData.i[self->mRegCount.i++] = x;
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155 else
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156 dcVecAppend(&self->mVecHead, &x, sizeof(DCpointer));
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157 }
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158
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159 static void dc_callvm_argStruct_x64(DCCallVM* in_self, DCstruct* s, DCpointer x)
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160 {
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161 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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162 dcVecAppend(&self->mVecHead, x, s->size);
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163 /*printf("dc_callvm_argStruct_x64 size = %d\n", (int)s->size);@@@*/
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164 if (s->size <= 64)
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165 dcArgStructUnroll(in_self, s, x);
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166 /*else@@@*/
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167 /* dcVecAppend(&self->mVecHead, &x, sizeof(DCpointer));@@@*/
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168 }
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169
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170
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171 /* Call. */
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172 void dc_callvm_call_x64(DCCallVM* in_self, DCpointer target)
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173 {
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174 DCCallVM_x64* self = (DCCallVM_x64*)in_self;
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175 #if defined(DC_UNIX)
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176 dcCall_x64_sysv(
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177 #else
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178 dcCall_x64_win64(
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179 #endif
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180 dcVecSize(&self->mVecHead), /* Size of stack data. */
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181 dcVecData(&self->mVecHead), /* Pointer to stack arguments. */
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182 self->mRegData.i, /* Pointer to register arguments (ints on SysV). */
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183 #if defined(DC_UNIX)
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184 self->mRegData.f, /* Pointer to floating point register arguments. */
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185 #endif
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186 target
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187 );
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188 }
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189
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190
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191 DCCallVM_vt gVT_x64 =
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192 {
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193 &dc_callvm_free_x64
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194 , &dc_callvm_reset_x64
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195 , &dc_callvm_mode_x64
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196 , &dc_callvm_argBool_x64
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197 , &dc_callvm_argChar_x64
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198 , &dc_callvm_argShort_x64
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199 , &dc_callvm_argInt_x64
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200 , &dc_callvm_argLong_x64
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201 , &dc_callvm_argLongLong_x64
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202 , &dc_callvm_argFloat_x64
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203 , &dc_callvm_argDouble_x64
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204 , &dc_callvm_argPointer_x64
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205 , &dc_callvm_argStruct_x64
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206 , (DCvoidvmfunc*) &dc_callvm_call_x64
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207 , (DCboolvmfunc*) &dc_callvm_call_x64
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208 , (DCcharvmfunc*) &dc_callvm_call_x64
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209 , (DCshortvmfunc*) &dc_callvm_call_x64
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210 , (DCintvmfunc*) &dc_callvm_call_x64
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211 , (DClongvmfunc*) &dc_callvm_call_x64
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212 , (DClonglongvmfunc*) &dc_callvm_call_x64
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213 , (DCfloatvmfunc*) &dc_callvm_call_x64
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214 , (DCdoublevmfunc*) &dc_callvm_call_x64
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215 , (DCpointervmfunc*) &dc_callvm_call_x64
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216 , NULL /* callStruct */
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217 };
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218
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219
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220 DCCallVM* dcNewCallVM_x64(DCsize size)
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221 {
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222 return dc_callvm_new_x64(&gVT_x64, size);
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223 }
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224
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225 DCCallVM* dcNewCallVM(DCsize size)
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226 {
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227 return dcNewCallVM_x64(size);
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228 }
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229
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