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1 #include <lua.h>
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2 #include <lauxlib.h>
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3 #include <dyncall.h>
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4 #include <dyncall_signature.h>
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5 #include <dynload.h>
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6
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7 #define LUA_DCLIBNAME "dc"
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8
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9 DCCallVM* g_pCallVM;
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10
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11 int luaDC_load(lua_State* L)
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12 {
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13 void* handle;
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14 if (lua_gettop(L) != 1) return luaL_error(L,"wrong number of arguments");
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15 handle = dlLoadLibrary( lua_tostring(L,1) );
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16 if (!handle) return luaL_error(L,"library not found");
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17 lua_pushlightuserdata(L, handle);
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18 return 1;
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19 }
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20
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21 int luaDC_find(lua_State* L)
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22 {
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23 void* h;
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24 const char* s;
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25 void* f;
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26 if (lua_gettop(L) != 2) return luaL_error(L,"wrong number of arguments");
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27 h = lua_touserdata(L, 1);
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28 s = lua_tostring(L, 2);
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29 f = dlFindSymbol(h, s);
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30 if (!f) return luaL_error(L,"symbol not found");
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31 lua_pushlightuserdata(L, f);
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32 return 1;
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33 }
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34
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35 int luaDC_mode(lua_State* L)
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36 {
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37 if (lua_gettop(L) < 1) return luaL_error(L,"missing arguments");
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38 dcMode(g_pCallVM, (DCint) lua_tonumber(L, 1) );
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39 return 0;
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40 }
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41
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42 int luaDC_call(lua_State* L)
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43 {
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44 void* f;
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45 const char* s;
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46 if (lua_gettop(L) < 2) return luaL_error(L,"missing arguments");
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47
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48 if ( lua_iscfunction(L,1) )
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49 f = (void*) lua_tocfunction(L,1);
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50 else if (lua_islightuserdata(L,1) )
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51 f = lua_touserdata(L, 1);
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52 else
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53 return luaL_error(L,"argument #1 mismatch: expected userdata");
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54
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55 s = lua_tostring(L,2);
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56
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57 // dcMode( g_pCallVM, DC_CALL_C_DEFAULT );
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58 dcReset( g_pCallVM );
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59
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60 char ch;
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61 int p = 3;
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62 while ( (ch = *s++) != DC_SIGCHAR_ENDARG)
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63 {
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64 switch(ch)
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65 {
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66 case DC_SIGCHAR_BOOL:
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67 dcArgBool(g_pCallVM, (DCbool) lua_toboolean(L, p) );
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68 break;
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69 case DC_SIGCHAR_CHAR:
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70 dcArgChar(g_pCallVM, (DCchar) lua_tonumber(L, p) );
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71 break;
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72 case DC_SIGCHAR_SHORT:
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73 dcArgShort(g_pCallVM, (DCshort) lua_tonumber(L, p) );
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74 break;
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75 case DC_SIGCHAR_INT:
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76 dcArgInt(g_pCallVM, (DCint) lua_tonumber(L, p) );
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77 break;
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78 case DC_SIGCHAR_LONG:
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79 dcArgLong(g_pCallVM, (DClong) lua_tonumber(L, p) );
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80 break;
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81 case DC_SIGCHAR_LONGLONG:
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82 dcArgLongLong(g_pCallVM, (DClonglong) lua_tonumber(L, p) );
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83 break;
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84 case DC_SIGCHAR_FLOAT:
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85 dcArgFloat(g_pCallVM, (DCfloat) lua_tonumber(L, p) );
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86 break;
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87 case DC_SIGCHAR_DOUBLE:
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88 dcArgDouble(g_pCallVM, (DCdouble) lua_tonumber(L, p) );
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89 break;
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90 case DC_SIGCHAR_POINTER:
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91 dcArgPointer(g_pCallVM, (DCpointer) lua_topointer(L, p) );
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92 break;
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93 case DC_SIGCHAR_STRING:
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94 dcArgPointer(g_pCallVM, (DCpointer) lua_tostring(L, p) );
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95 break;
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96 }
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97 ++p;
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98 }
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99
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100 switch(*s)
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101 {
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102 case DC_SIGCHAR_VOID:
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103 dcCallVoid(g_pCallVM, f);
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104 return 0;
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105 case DC_SIGCHAR_BOOL:
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106 lua_pushboolean( L, (int) dcCallBool(g_pCallVM, f) );
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107 break;
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108 case DC_SIGCHAR_CHAR:
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109 lua_pushnumber( L, (lua_Number) ( dcCallChar(g_pCallVM,f) ) );
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110 break;
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111 case DC_SIGCHAR_SHORT:
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112 lua_pushnumber( L, (lua_Number)( dcCallShort(g_pCallVM, f) ) );
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113 break;
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114 case DC_SIGCHAR_INT:
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115 lua_pushnumber( L, (lua_Number)( dcCallInt(g_pCallVM, f) ) );
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116 break;
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117 case DC_SIGCHAR_LONG:
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118 lua_pushnumber( L, (lua_Number)( dcCallLong(g_pCallVM, f) ) );
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119 break;
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120 case DC_SIGCHAR_LONGLONG:
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121 lua_pushnumber( L, (lua_Number)( dcCallLongLong(g_pCallVM, f) ) );
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122 break;
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123 case DC_SIGCHAR_FLOAT:
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124 lua_pushnumber( L, (lua_Number) dcCallFloat(g_pCallVM, f) );
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125 break;
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126 case DC_SIGCHAR_DOUBLE:
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127 lua_pushnumber( L, (lua_Number) dcCallDouble(g_pCallVM, f) );
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128 break;
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129 case DC_SIGCHAR_STRING:
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130 lua_pushstring( L, (const char*) dcCallPointer(g_pCallVM, f) );
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131 break;
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132 case DC_SIGCHAR_POINTER:
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133 lua_pushlightuserdata( L, dcCallPointer(g_pCallVM, f) );
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134 break;
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135 }
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136 return 1;
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137 }
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138
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139 static const luaL_Reg dclib[] =
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140 {
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141 {"load", luaDC_load},
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142 {"find", luaDC_find},
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143 {"mode", luaDC_mode},
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144 {"call", luaDC_call},
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145 {NULL,NULL}
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146 };
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147
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148 typedef struct
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149 {
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150 const char* name;
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151 int value;
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152 } ModeEnum;
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153
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154 ModeEnum gModeEnums[] =
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155 {
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156 "C_DEFAULT", DC_CALL_C_DEFAULT,
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157 "C_X86_CDECL", DC_CALL_C_X86_CDECL,
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158 "C_X86_WIN32_STD", DC_CALL_C_X86_WIN32_STD,
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159 "C_X86_FAST_MS", DC_CALL_C_X86_WIN32_FAST_MS,
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160 "C_X86_WIN32_THIS_MS", DC_CALL_C_X86_WIN32_THIS_MS,
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161 "C_X86_WIN32_THIS_GNU", DC_CALL_C_X86_WIN32_THIS_GNU,
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162 "C_X86_WIN32_FAST_GNU", DC_CALL_C_X86_WIN32_FAST_GNU,
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163 "C_X64_WIN64", DC_CALL_C_X64_WIN64,
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164 "C_PPC32_DARWIN", DC_CALL_C_PPC32_DARWIN,
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165 "C_ARM", DC_CALL_C_ARM,
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166 "C_MIPS_EABI", DC_CALL_C_MIPS32_EABI,
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167 "C_MIPS_PSPSDK", DC_CALL_C_MIPS32_PSPSDK
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168 };
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169
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170 LUA_API int luadc_open (lua_State* L)
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171 {
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172 int i = 0, n = sizeof(gModeEnums)/sizeof(ModeEnum);
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173 g_pCallVM = dcNewCallVM(256);
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174 luaL_register(L, LUA_DCLIBNAME, dclib);
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175
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176 for (i = 0; i < n ; ++i )
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177 {
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178 lua_pushnumber(L, gModeEnums[i].value);
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179 lua_setfield(L, -2, gModeEnums[i].name);
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180
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181 }
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182 return 1;
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183 }
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184
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