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0
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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_arm64.c
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6 Description: ARM 64-bit ABI implementation
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7 License:
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8
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9 Copyright (c) 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 #include "dyncall_callvm_arm64.h"
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28 #include "dyncall_alloc.h"
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29
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30 static DCCallVM* dc_callvm_new_arm64(DCCallVM_vt* vt, DCsize size)
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31 {
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32 DCCallVM_arm64* p = (DCCallVM_arm64*) dcAllocMem(size);
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33
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34 dc_callvm_base_init(&p->mInterface, vt);
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35
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36 dcVecInit(&p->mVecHead, size);
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37
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38 p->i = 0;
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39 p->f = 0;
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40
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41 return (DCCallVM*)p;
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42 }
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43
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44 static void reset(DCCallVM* in_p)
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45 {
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46 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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47 p->i = 0;
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48 p->f = 0;
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49 dcVecReset(&p->mVecHead);
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50 }
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51
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52
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53 static void mode(DCCallVM* in_self,DCint mode);
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54
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55 static void deinit(DCCallVM* in_self)
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56 {
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57 dcFreeMem(in_self);
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58 }
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59
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60
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61
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62 static void a_i64(DCCallVM* in_self, DClonglong x)
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63 {
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64 DCCallVM_arm64* p = (DCCallVM_arm64*)in_self;
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65 if (p->i < 8) {
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66 p->I[p->i] = x;
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67 p->i++;
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68 } else {
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69 dcVecAppend(&p->mVecHead, &x, sizeof(DClonglong));
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70 }
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71 }
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72
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73 static void a_bool (DCCallVM* self, DCbool x) { a_i64(self, (DClonglong)x); }
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74 static void a_char (DCCallVM* self, DCchar x) { a_i64(self, x); }
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75 static void a_short (DCCallVM* self, DCshort x) { a_i64(self, x); }
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76 static void a_int (DCCallVM* self, DCint x) { a_i64(self, x); }
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77 static void a_long (DCCallVM* self, DClong x) { a_i64(self, x); }
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78 static void a_pointer (DCCallVM* self, DCpointer x) { a_i64(self, (DClonglong) x ); }
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79
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80 static void a_float(DCCallVM* in_p, DCfloat x)
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81 {
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82 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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83
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84 if (p->f < 8) {
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85 p->u.S[ p->f << 1 ] = x;
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86 p->f++;
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87 } else {
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88 dcVecAppend(&p->mVecHead, &x, sizeof(DCfloat));
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89 dcVecSkip(&p->mVecHead, 4); /* align to 8-bytes */
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90 }
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91 }
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92
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93 static void a_double(DCCallVM* in_p, DCdouble x)
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94 {
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95 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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96 if (p->f < 8) {
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97 p->u.D[ p->f ] = x;
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98 p->f++;
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99 } else {
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100 dcVecAppend(&p->mVecHead, &x, sizeof(DCdouble));
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101 }
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102 }
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103
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104 void call(DCCallVM* in_p, DCpointer target)
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105 {
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106 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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107
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108 /*
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109 ** copy 'size' argument is given in number of 16-byte 'pair' blocks.
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110 */
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111
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112 dcCall_arm64(target, dcVecData(&p->mVecHead), ( dcVecSize(&p->mVecHead) + 15 ) & -16, &p->u.S[0]);
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113 }
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114
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115 DCCallVM_vt vt_arm64 =
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116 {
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117 &deinit
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118 , &reset
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119 , &mode
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120 , &a_bool
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121 , &a_char
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122 , &a_short
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123 , &a_int
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124 , &a_long
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125 , &a_i64
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126 , &a_float
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127 , &a_double
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128 , &a_pointer
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129 , NULL /* argStruct */
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130 , (DCvoidvmfunc*) &call
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131 , (DCboolvmfunc*) &call
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132 , (DCcharvmfunc*) &call
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133 , (DCshortvmfunc*) &call
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134 , (DCintvmfunc*) &call
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135 , (DClongvmfunc*) &call
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136 , (DClonglongvmfunc*) &call
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137 , (DCfloatvmfunc*) &call
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138 , (DCdoublevmfunc*) &call
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139 , (DCpointervmfunc*) &call
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140 , NULL /* callStruct */
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141 };
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142
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143 DCCallVM* dcNewCallVM(DCsize size)
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144 {
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145 return dc_callvm_new_arm64(&vt_arm64, size);
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146 }
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147
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148 static void mode(DCCallVM* in_self,DCint mode)
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149 {
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150 DCCallVM_arm64* self = (DCCallVM_arm64*) in_self;
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151 DCCallVM_vt* vt;
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152 switch(mode) {
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153 case DC_CALL_C_DEFAULT:
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154 case DC_CALL_C_ELLIPSIS:
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155 case DC_CALL_C_ELLIPSIS_VARARGS:
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156 case DC_CALL_C_ARM64:
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157 vt = &vt_arm64;
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158 break;
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159 default:
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160 in_self->mError = DC_ERROR_UNSUPPORTED_MODE;
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161 return;
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162 }
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163 self->mInterface.mVTpointer = vt;
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164 }
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165
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