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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_mips_eabi.c
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6 Description: Implementation of Call VM for mips "eabi" abi.
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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 #include "dyncall_callvm_mips_eabi.h"
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29 #include "dyncall_alloc.h"
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30
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31 static void dc_callvm_reset_mips_eabi(DCCallVM* in_self)
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32 {
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33 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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34 dcVecReset(&self->mVecHead);
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35 self->mIntRegs = 0;
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36 self->mSingleRegs = 0;
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37 }
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38
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39 static DCCallVM* dc_callvm_new_mips_eabi(DCCallVM_vt* vt, DCsize size)
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40 {
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41 /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */
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42 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)dcAllocMem(sizeof(DCCallVM_mips_eabi)+size+16);
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43 dc_callvm_base_init(&self->mInterface, vt);
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44 dcVecInit(&self->mVecHead, size);
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45 dc_callvm_reset_mips_eabi( (DCCallVM*) self );
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46 return (DCCallVM*)self;
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47 }
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48
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49
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50 static void dc_callvm_free_mips_eabi(DCCallVM* in_self)
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51 {
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52 dcFreeMem(in_self);
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53 }
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54
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55 static void dc_callvm_mode_mips_eabi(DCCallVM* in_self,DCint mode)
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56 {
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57 switch(mode) {
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58 case DC_CALL_C_DEFAULT:
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59 case DC_CALL_C_ELLIPSIS:
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60 case DC_CALL_C_MIPS32_EABI:
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61 break;
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62 default:
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63 in_self->mError = DC_ERROR_UNSUPPORTED_MODE; return;
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64 }
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65 }
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66
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67 /* arg int -- fillup integer register file OR push on stack */
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68
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69 static void dc_callvm_argInt_mips_eabi(DCCallVM* in_self, DCint i)
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70 {
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71 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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72 /* fillup integer register file */
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73 if (self->mIntRegs < 8)
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74 self->mRegData.mIntData[self->mIntRegs++] = i;
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75 else
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76 dcVecAppend(&self->mVecHead, &i, sizeof(DCint));
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77 }
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78
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79 static void dc_callvm_argPointer_mips_eabi(DCCallVM* in_self, DCpointer x)
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80 {
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81 dc_callvm_argInt_mips_eabi(in_self, * (DCint*) &x );
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82 }
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83
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84 static void dc_callvm_argBool_mips_eabi(DCCallVM* in_self, DCbool x)
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85 {
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86 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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87 }
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88
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89 static void dc_callvm_argChar_mips_eabi(DCCallVM* in_self, DCchar x)
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90 {
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91 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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92 }
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93
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94 static void dc_callvm_argShort_mips_eabi(DCCallVM* in_self, DCshort x)
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95 {
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96 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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97 }
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98
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99 static void dc_callvm_argLong_mips_eabi(DCCallVM* in_self, DClong x)
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100 {
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101 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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102 }
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103
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104 static void dc_callvm_argLongLong_mips_eabi(DCCallVM* in_self, DClonglong Lv)
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105 {
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106 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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107
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108 if (self->mIntRegs < 7) {
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109 DCint* p = (DCint*) &Lv;
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110 /* skip odd register (align 64 bit) */
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111 self->mIntRegs += self->mIntRegs & 1;
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112 self->mRegData.mIntData[self->mIntRegs++] = p[0];
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113 self->mRegData.mIntData[self->mIntRegs++] = p[1];
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114 } else {
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115 self->mIntRegs = 8;
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116 /* 64 bit values need to be aligned on 8 byte boundaries */
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117 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
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118 dcVecAppend(&self->mVecHead, &Lv, sizeof(DClonglong));
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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_mips_eabi(DCCallVM* in_self, DCfloat x)
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123 {
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124 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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125 if (self->mSingleRegs < 8) {
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126 self->mRegData.mSingleData[self->mSingleRegs++] = x;
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127 } else {
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128 dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat) );
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129 }
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130 }
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131
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132 static void dc_callvm_argDouble_mips_eabi(DCCallVM* in_self, DCdouble x)
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133 {
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134 DClonglong* p = (DClonglong*) &x;
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135 dc_callvm_argLongLong_mips_eabi(in_self, *p);
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136 }
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137
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138 /* Call. */
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139 void dc_callvm_call_mips_eabi(DCCallVM* in_self, DCpointer target)
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140 {
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141 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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142 dcCall_mips_eabi(target, &self->mRegData, dcVecSize(&self->mVecHead), dcVecData(&self->mVecHead));
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143 }
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144
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145 DCCallVM_vt gVT_mips_eabi =
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146 {
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147 &dc_callvm_free_mips_eabi
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148 , &dc_callvm_reset_mips_eabi
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149 , &dc_callvm_mode_mips_eabi
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150 , &dc_callvm_argBool_mips_eabi
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151 , &dc_callvm_argChar_mips_eabi
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152 , &dc_callvm_argShort_mips_eabi
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153 , &dc_callvm_argInt_mips_eabi
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154 , &dc_callvm_argLong_mips_eabi
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155 , &dc_callvm_argLongLong_mips_eabi
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156 , &dc_callvm_argFloat_mips_eabi
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157 , &dc_callvm_argDouble_mips_eabi
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158 , &dc_callvm_argPointer_mips_eabi
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159 , NULL /* argStruct */
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160 , (DCvoidvmfunc*) &dc_callvm_call_mips_eabi
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161 , (DCboolvmfunc*) &dc_callvm_call_mips_eabi
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162 , (DCcharvmfunc*) &dc_callvm_call_mips_eabi
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163 , (DCshortvmfunc*) &dc_callvm_call_mips_eabi
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164 , (DCintvmfunc*) &dc_callvm_call_mips_eabi
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165 , (DClongvmfunc*) &dc_callvm_call_mips_eabi
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166 , (DClonglongvmfunc*) &dc_callvm_call_mips_eabi
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167 , (DCfloatvmfunc*) &dc_callvm_call_mips_eabi
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168 , (DCdoublevmfunc*) &dc_callvm_call_mips_eabi
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169 , (DCpointervmfunc*) &dc_callvm_call_mips_eabi
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170 , NULL /* callStruct */
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171 };
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172
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173 DCCallVM* dcNewCallVM_mips_eabi(DCsize size)
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174 {
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175 return dc_callvm_new_mips_eabi(&gVT_mips_eabi, size);
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176 }
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177
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178 DCCallVM* dcNewCallVM(DCsize size)
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179 {
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180 return dcNewCallVM_mips_eabi(size);
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181 }
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182
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