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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 void dc_callvm_free_mips_eabi(DCCallVM* in_self)
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40 {
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41 dcFreeMem(in_self);
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42 }
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43
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44 /* arg int -- fillup integer register file OR push on stack */
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45
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46 static void dc_callvm_argInt_mips_eabi(DCCallVM* in_self, DCint i)
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47 {
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48 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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49 /* fillup integer register file */
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50 if (self->mIntRegs < 8)
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51 self->mRegData.mIntData[self->mIntRegs++] = i;
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52 else
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53 dcVecAppend(&self->mVecHead, &i, sizeof(DCint));
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54 }
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55
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56 static void dc_callvm_argPointer_mips_eabi(DCCallVM* in_self, DCpointer x)
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57 {
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58 dc_callvm_argInt_mips_eabi(in_self, * (DCint*) &x );
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59 }
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60
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61 static void dc_callvm_argBool_mips_eabi(DCCallVM* in_self, DCbool x)
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62 {
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63 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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64 }
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65
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66 static void dc_callvm_argChar_mips_eabi(DCCallVM* in_self, DCchar x)
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67 {
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68 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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69 }
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70
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71 static void dc_callvm_argShort_mips_eabi(DCCallVM* in_self, DCshort x)
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72 {
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73 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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74 }
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75
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76 static void dc_callvm_argLong_mips_eabi(DCCallVM* in_self, DClong x)
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77 {
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78 dc_callvm_argInt_mips_eabi(in_self, (DCint)x);
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79 }
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80
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81 static void dc_callvm_argLongLong_mips_eabi(DCCallVM* in_self, DClonglong Lv)
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82 {
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83 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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84
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85 if (self->mIntRegs < 7) {
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86 DCint* p = (DCint*) &Lv;
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87 /* skip odd register (align 64 bit) */
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88 self->mIntRegs += self->mIntRegs & 1;
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89 self->mRegData.mIntData[self->mIntRegs++] = p[0];
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90 self->mRegData.mIntData[self->mIntRegs++] = p[1];
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91 } else {
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92 self->mIntRegs = 8;
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93 /* 64 bit values need to be aligned on 8 byte boundaries */
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94 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
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95 dcVecAppend(&self->mVecHead, &Lv, sizeof(DClonglong));
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96 }
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97 }
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98
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99 static void dc_callvm_argFloat_mips_eabi(DCCallVM* in_self, DCfloat x)
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100 {
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101 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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102 if (self->mSingleRegs < 8) {
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103 self->mRegData.mSingleData[self->mSingleRegs++] = x;
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104 } else {
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105 dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat) );
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106 }
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107 }
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108
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109 static void dc_callvm_argDouble_mips_eabi(DCCallVM* in_self, DCdouble x)
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110 {
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111 DClonglong* p = (DClonglong*) &x;
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112 dc_callvm_argLongLong_mips_eabi(in_self, *p);
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113 }
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114
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115 /* Call. */
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116 void dc_callvm_call_mips_eabi(DCCallVM* in_self, DCpointer target)
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117 {
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118 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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119 dcCall_mips_eabi(target, &self->mRegData, dcVecSize(&self->mVecHead), dcVecData(&self->mVecHead));
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120 }
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121
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84
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122 static void dc_callvm_mode_mips_eabi(DCCallVM* in_self, DCint mode);
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123
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124 DCCallVM_vt gVT_mips_eabi =
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125 {
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126 &dc_callvm_free_mips_eabi
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127 , &dc_callvm_reset_mips_eabi
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128 , &dc_callvm_mode_mips_eabi
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129 , &dc_callvm_argBool_mips_eabi
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130 , &dc_callvm_argChar_mips_eabi
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131 , &dc_callvm_argShort_mips_eabi
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132 , &dc_callvm_argInt_mips_eabi
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133 , &dc_callvm_argLong_mips_eabi
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134 , &dc_callvm_argLongLong_mips_eabi
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135 , &dc_callvm_argFloat_mips_eabi
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136 , &dc_callvm_argDouble_mips_eabi
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137 , &dc_callvm_argPointer_mips_eabi
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138 , NULL /* argStruct */
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139 , (DCvoidvmfunc*) &dc_callvm_call_mips_eabi
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140 , (DCboolvmfunc*) &dc_callvm_call_mips_eabi
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141 , (DCcharvmfunc*) &dc_callvm_call_mips_eabi
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142 , (DCshortvmfunc*) &dc_callvm_call_mips_eabi
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143 , (DCintvmfunc*) &dc_callvm_call_mips_eabi
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144 , (DClongvmfunc*) &dc_callvm_call_mips_eabi
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145 , (DClonglongvmfunc*) &dc_callvm_call_mips_eabi
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146 , (DCfloatvmfunc*) &dc_callvm_call_mips_eabi
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147 , (DCdoublevmfunc*) &dc_callvm_call_mips_eabi
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148 , (DCpointervmfunc*) &dc_callvm_call_mips_eabi
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149 , NULL /* callStruct */
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150 };
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151
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84
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152 /* mode: only a single mode available currently. */
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153 static void dc_callvm_mode_mips_eabi(DCCallVM* in_self, DCint mode)
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0
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154 {
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84
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155 DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self;
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156 DCCallVM_vt* vt;
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157
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158 switch(mode) {
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159 case DC_CALL_C_DEFAULT:
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160 case DC_CALL_C_MIPS32_EABI:
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161 case DC_CALL_C_ELLIPSIS:
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162 case DC_CALL_C_ELLIPSIS_VARARGS:
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163 vt = &gVT_mips_eabi;
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164 break;
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165 default:
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166 self->mInterface.mError = DC_ERROR_UNSUPPORTED_MODE;
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167 return;
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168 }
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169 dc_callvm_base_init(&self->mInterface, vt);
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0
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170 }
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171
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84
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172 /* Public API. */
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173 DCCallVM* dcNewCallVM(DCsize size)
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174 {
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84
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175 /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */
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176 DCCallVM_mips_eabi* p = (DCCallVM_mips_eabi*)dcAllocMem(sizeof(DCCallVM_mips_eabi)+size+16);
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177
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178 dc_callvm_mode_mips_eabi((DCCallVM*)p, DC_CALL_C_DEFAULT);
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179
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180 dcVecInit(&p->mVecHead, size);
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181 dc_callvm_reset_mips_eabi((DCCallVM*)p);
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182
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183 return (DCCallVM*)p;
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0
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184 }
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185
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