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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_arm32_thumb.c
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6 Description: ARM 32-bit "thumb" ABI callvm implementation
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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
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30 dyncall callvm for 32bit ARM32 family of processors
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31
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32 SUPPORTED CALLING CONVENTIONS
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33 armthumbcall
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34
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35 REVISION
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36 2007/12/11 initial
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37
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38 */
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39
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40
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41 #include "dyncall_callvm_arm32_thumb.h"
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42 #include "dyncall_alloc.h"
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43
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44 static void dc_callvm_mode_arm32_thumb(DCCallVM* in_self,DCint mode);
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45
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46 static DCCallVM* dc_callvm_new_arm32_thumb(DCCallVM_vt* vt, DCsize size)
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47 {
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48 /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */
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49 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)dcAllocMem(sizeof(DCCallVM_arm32_thumb)+size+16);
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50 dc_callvm_base_init(&self->mInterface, vt);
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51 dcVecInit(&self->mVecHead, size);
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52 return (DCCallVM*)self;
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53 }
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54
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55
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56 static void dc_callvm_free_arm32_thumb(DCCallVM* in_self)
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57 {
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58 dcFreeMem(in_self);
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59 }
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60
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61
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62 static void dc_callvm_reset_arm32_thumb(DCCallVM* in_self)
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63 {
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64 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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65 dcVecReset(&self->mVecHead);
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66 }
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67
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68
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69 static void dc_callvm_argInt_arm32_thumb(DCCallVM* in_self, DCint x)
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70 {
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71 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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72 dcVecAppend(&self->mVecHead, &x, sizeof(DCint));
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73 }
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74
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75
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76 static void dc_callvm_argBool_arm32_thumb(DCCallVM* in_self, DCbool x)
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77 {
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78 dc_callvm_argInt_arm32_thumb(in_self, (DCint)x);
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79 }
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80
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81
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82 static void dc_callvm_argChar_arm32_thumb(DCCallVM* in_self, DCchar x)
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83 {
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84 dc_callvm_argInt_arm32_thumb(in_self, x);
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85 }
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86
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87
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88 static void dc_callvm_argShort_arm32_thumb(DCCallVM* in_self, DCshort x)
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89 {
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90 dc_callvm_argInt_arm32_thumb(in_self, x);
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91 }
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92
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93
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94 static void dc_callvm_argLong_arm32_thumb(DCCallVM* in_self, DClong x)
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95 {
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96 dc_callvm_argInt_arm32_thumb(in_self, x);
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97 }
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98
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99
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100 static void dc_callvm_argLongLong_arm32_thumb(DCCallVM* in_self, DClonglong x)
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101 {
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102 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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103 dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong));
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104 }
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105
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106
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107 static void dc_callvm_argLongLong_arm32_thumb_eabi(DCCallVM* in_self, DClonglong x)
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108 {
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109 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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110
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111 /* 64 bit values need to be aligned on 8 byte boundaries */
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112 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
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113 dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong));
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114 }
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115
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116
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117 static void dc_callvm_argFloat_arm32_thumb(DCCallVM* in_self, DCfloat x)
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118 {
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119 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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120 dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat));
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121 }
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122
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123
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124 static void dc_callvm_argDouble_arm32_thumb(DCCallVM* in_self, DCdouble x)
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125 {
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126 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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127 dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble));
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128 }
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129
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130
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131 static void dc_callvm_argDouble_arm32_thumb_eabi(DCCallVM* in_self, DCdouble x)
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132 {
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133 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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134
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135 /* 64 bit values need to be aligned on 8 byte boundaries */
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136 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
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137 dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble));
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138 }
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139
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140
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141 static void dc_callvm_argPointer_arm32_thumb(DCCallVM* in_self, DCpointer x)
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142 {
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143 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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144 dcVecAppend(&self->mVecHead, &x, sizeof(DCpointer));
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145 }
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146
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147 typedef void (*call_void) (DCpointer target, DCpointer data, DCsize size);
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148 typedef DClong (*call_word) (DCpointer target, DCpointer data, DCsize size);
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149 typedef DClonglong (*call_dword) (DCpointer target, DCpointer data, DCsize size);
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150
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151
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152
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153 /* Call. */
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154 void dc_callvm_call_arm32_thumb(DCCallVM* in_self, DCpointer target)
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155 {
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156 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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157 dcCall_arm32_thumb(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead));
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158 }
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159
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160
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161 #if 0
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162 DClong dc_callvm_call_arm32_thumb_word(DCCallVM* in_self, DCpointer target)
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163 {
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164 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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165 // return dcCall_arm32_thumb_word(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead));
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166 return ( (call_word) dcCall_arm32_thumb) (target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead));
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167 }
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168
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169
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170 DClonglong dc_callvm_call_arm32_thumb_dword(DCCallVM* in_self, DCpointer target)
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171 {
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172 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self;
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173 // return dcCall_arm32_thumb_dword(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead));
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174 return ( (call_dword) dcCall_arm32_thumb ) (target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead));
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175 }
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176 #endif
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177
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178
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179 DCCallVM_vt gVT_arm32_thumb =
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180 {
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181 &dc_callvm_free_arm32_thumb
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182 , &dc_callvm_reset_arm32_thumb
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183 , &dc_callvm_mode_arm32_thumb
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184 , &dc_callvm_argBool_arm32_thumb
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185 , &dc_callvm_argChar_arm32_thumb
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186 , &dc_callvm_argShort_arm32_thumb
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187 , &dc_callvm_argInt_arm32_thumb
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188 , &dc_callvm_argLong_arm32_thumb
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189 , &dc_callvm_argLongLong_arm32_thumb
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190 , &dc_callvm_argFloat_arm32_thumb
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191 , &dc_callvm_argDouble_arm32_thumb
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192 , &dc_callvm_argPointer_arm32_thumb
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193 , NULL /* argStruct */
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194 , (DCvoidvmfunc*) &dc_callvm_call_arm32_thumb
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195 , (DCboolvmfunc*) &dc_callvm_call_arm32_thumb
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196 , (DCcharvmfunc*) &dc_callvm_call_arm32_thumb
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197 , (DCshortvmfunc*) &dc_callvm_call_arm32_thumb
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198 , (DCintvmfunc*) &dc_callvm_call_arm32_thumb
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199 , (DClongvmfunc*) &dc_callvm_call_arm32_thumb
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200 , (DClonglongvmfunc*) &dc_callvm_call_arm32_thumb
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201 , (DCfloatvmfunc*) &dc_callvm_call_arm32_thumb
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202 , (DCdoublevmfunc*) &dc_callvm_call_arm32_thumb
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203 , (DCpointervmfunc*) &dc_callvm_call_arm32_thumb
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204 , NULL /* callStruct */
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205 };
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206
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207
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208 DCCallVM_vt gVT_arm32_thumb_eabi =
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209 {
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210 &dc_callvm_free_arm32_thumb
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211 , &dc_callvm_reset_arm32_thumb
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212 , &dc_callvm_mode_arm32_thumb
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213 , &dc_callvm_argBool_arm32_thumb
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214 , &dc_callvm_argChar_arm32_thumb
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215 , &dc_callvm_argShort_arm32_thumb
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216 , &dc_callvm_argInt_arm32_thumb
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217 , &dc_callvm_argLong_arm32_thumb
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218 , &dc_callvm_argLongLong_arm32_thumb_eabi
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219 , &dc_callvm_argFloat_arm32_thumb
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220 , &dc_callvm_argDouble_arm32_thumb_eabi
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221 , &dc_callvm_argPointer_arm32_thumb
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222 , NULL /* argStruct */
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223 , (DCvoidvmfunc*) &dc_callvm_call_arm32_thumb
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224 , (DCboolvmfunc*) &dc_callvm_call_arm32_thumb
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225 , (DCcharvmfunc*) &dc_callvm_call_arm32_thumb
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226 , (DCshortvmfunc*) &dc_callvm_call_arm32_thumb
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227 , (DCintvmfunc*) &dc_callvm_call_arm32_thumb
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228 , (DClongvmfunc*) &dc_callvm_call_arm32_thumb
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229 , (DClonglongvmfunc*) &dc_callvm_call_arm32_thumb
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230 , (DCfloatvmfunc*) &dc_callvm_call_arm32_thumb
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231 , (DCdoublevmfunc*) &dc_callvm_call_arm32_thumb
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232 , (DCpointervmfunc*) &dc_callvm_call_arm32_thumb
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233 , NULL /* callStruct */
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234 };
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235
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236
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237 DCCallVM* dcNewCallVM_arm32_thumb(DCsize size)
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238 {
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239 /* Check OS if we need EABI as default. */
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240 #if defined(DC__ABI_ARM_EABI)
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241 return dc_callvm_new_arm32_thumb(&gVT_arm32_thumb_eabi, size);
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242 #else
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243 return dc_callvm_new_arm32_thumb(&gVT_arm32_thumb, size);
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244 #endif
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245 }
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246
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247
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248 DCCallVM* dcNewCallVM(DCsize size)
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249 {
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250 return dcNewCallVM_arm32_thumb(size);
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251 }
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252
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253
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254 static void dc_callvm_mode_arm32_thumb(DCCallVM* in_self,DCint mode)
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255 {
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256 DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*) in_self;
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257 DCCallVM_vt* vt;
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258 switch(mode) {
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259 /* Check OS if we need EABI as default. */
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260 case DC_CALL_C_ELLIPSIS:
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261 #if defined(DC__ABI_ARM_EABI)
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262 case DC_CALL_C_DEFAULT: vt = &gVT_arm32_thumb_eabi; break;
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263 #else
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264 case DC_CALL_C_DEFAULT: vt = &gVT_arm32_thumb; break;
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265 #endif
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266 case DC_CALL_C_ARM_THUMB: vt = &gVT_arm32_thumb; break;
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267 case DC_CALL_C_ARM_THUMB_EABI: vt = &gVT_arm32_thumb_eabi; break;
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268 default: self->mInterface.mError = DC_ERROR_UNSUPPORTED_MODE; return;
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269 }
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270 self->mInterface.mVTpointer = vt;
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271 }
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272
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