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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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281
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9 Copyright (c) 2015-2018 Daniel Adler <dadler@uni-goettingen.de>,
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10 Tassilo Philipp <tphilipp@potion-studios.com>
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0
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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
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31 static void reset(DCCallVM* in_p)
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32 {
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33 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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34 p->i = 0;
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35 p->f = 0;
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36 dcVecReset(&p->mVecHead);
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37 }
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38
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39
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40 static void deinit(DCCallVM* in_self)
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41 {
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42 dcFreeMem(in_self);
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43 }
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44
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45
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46
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47 static void a_i64(DCCallVM* in_self, DClonglong x)
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48 {
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49 DCCallVM_arm64* p = (DCCallVM_arm64*)in_self;
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50 if (p->i < 8) {
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51 p->I[p->i] = x;
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52 p->i++;
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53 } else {
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54 dcVecAppend(&p->mVecHead, &x, sizeof(DClonglong));
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55 }
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56 }
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57
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58 static void a_bool (DCCallVM* self, DCbool x) { a_i64(self, (DClonglong)x); }
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59 static void a_char (DCCallVM* self, DCchar x) { a_i64(self, x); }
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60 static void a_short (DCCallVM* self, DCshort x) { a_i64(self, x); }
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61 static void a_int (DCCallVM* self, DCint x) { a_i64(self, x); }
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62 static void a_long (DCCallVM* self, DClong x) { a_i64(self, x); }
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63 static void a_pointer (DCCallVM* self, DCpointer x) { a_i64(self, (DClonglong) x ); }
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64
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65 static void a_float(DCCallVM* in_p, DCfloat x)
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66 {
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67 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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68
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69 if (p->f < 8) {
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70 p->u.S[ p->f << 1 ] = x;
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71 p->f++;
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72 } else {
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73 dcVecAppend(&p->mVecHead, &x, sizeof(DCfloat));
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74 dcVecSkip(&p->mVecHead, 4); /* align to 8-bytes */
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75 }
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76 }
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77
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78 static void a_double(DCCallVM* in_p, DCdouble x)
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79 {
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80 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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81 if (p->f < 8) {
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82 p->u.D[ p->f ] = x;
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83 p->f++;
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84 } else {
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85 dcVecAppend(&p->mVecHead, &x, sizeof(DCdouble));
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86 }
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87 }
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88
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89 void call(DCCallVM* in_p, DCpointer target)
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90 {
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91 DCCallVM_arm64* p = (DCCallVM_arm64*)in_p;
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92
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93 /*
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94 ** copy 'size' argument is given in number of 16-byte 'pair' blocks.
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95 */
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96
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97 dcCall_arm64(target, dcVecData(&p->mVecHead), ( dcVecSize(&p->mVecHead) + 15 ) & -16, &p->u.S[0]);
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98 }
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99
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84
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100 static void mode(DCCallVM* in_self, DCint mode);
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101
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0
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102 DCCallVM_vt vt_arm64 =
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103 {
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104 &deinit
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105 , &reset
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106 , &mode
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107 , &a_bool
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108 , &a_char
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109 , &a_short
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110 , &a_int
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111 , &a_long
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112 , &a_i64
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113 , &a_float
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114 , &a_double
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115 , &a_pointer
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116 , NULL /* argStruct */
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117 , (DCvoidvmfunc*) &call
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118 , (DCboolvmfunc*) &call
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119 , (DCcharvmfunc*) &call
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120 , (DCshortvmfunc*) &call
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121 , (DCintvmfunc*) &call
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122 , (DClongvmfunc*) &call
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123 , (DClonglongvmfunc*) &call
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124 , (DCfloatvmfunc*) &call
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125 , (DCdoublevmfunc*) &call
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126 , (DCpointervmfunc*) &call
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127 , NULL /* callStruct */
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128 };
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129
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84
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130 static void mode(DCCallVM* in_self, DCint mode)
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0
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131 {
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84
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132 DCCallVM_arm64* self = (DCCallVM_arm64*)in_self;
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133 DCCallVM_vt* vt;
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0
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134
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135 switch(mode) {
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136 case DC_CALL_C_DEFAULT:
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84
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137 case DC_CALL_C_ARM64:
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0
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138 case DC_CALL_C_ELLIPSIS:
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139 case DC_CALL_C_ELLIPSIS_VARARGS:
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140 vt = &vt_arm64;
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141 break;
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142 default:
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84
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143 self->mInterface.mError = DC_ERROR_UNSUPPORTED_MODE;
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0
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144 return;
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145 }
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84
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146 dc_callvm_base_init(&self->mInterface, vt);
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0
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147 }
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148
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84
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149 /* Public API. */
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150 DCCallVM* dcNewCallVM(DCsize size)
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151 {
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152 DCCallVM_arm64* p = (DCCallVM_arm64*)dcAllocMem(sizeof(DCCallVM_arm64)+size);
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153
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154 mode((DCCallVM*)p, DC_CALL_C_DEFAULT);
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155
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156 dcVecInit(&p->mVecHead, size);
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157 reset((DCCallVM*)p);
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158
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159 return (DCCallVM*)p;
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160 }
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161
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