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1 #include <lua.h>
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2 #include <assert.h>
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3 #include <dynload.h>
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4 #include <dyncall.h>
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5 #include <dyncall_signature.h>
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6
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7 int lua_dcload(lua_State* L)
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8 {
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9 void* handle;
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10 if (lua_gettop(L) != 1) return luaL_error(L,"wrong number of arguments");
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11 handle = dlLoadLibrary( lua_tostring(L,1) );
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12 if (!handle) return luaL_error(L,"library not found");
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13 lua_pushlightuserdata(L, handle);
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14 return 1;
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15 }
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16
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17 int lua_dcfind(lua_State* L)
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18 {
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19 void* h;
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20 const char* s;
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21 void* f;
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22 if (lua_gettop(L) != 2) return luaL_error(L,"wrong number of arguments");
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23 h = lua_touserdata(L, 1);
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24 s = lua_tostring(L, 2);
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25 f = dlFindSymbol(h, s);
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26 if (!f) return luaL_error(L,"symbol not found");
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27 lua_pushlightuserdata(L, f);
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28 return 1;
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29 }
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30
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31 DCCallVM* g_pCallVM;
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32
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33 int lua_dccall(lua_State* L)
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34 {
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35 void* f;
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36 const char* s;
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37 if (lua_gettop(L) < 2) return luaL_error(L,"missing arguments");
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38
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39 if ( lua_iscfunction(L,1) )
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40 f = (void*) lua_tocfunction(L,1);
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41 else if (lua_islightuserdata(L,1) )
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42 f = lua_touserdata(L, 1);
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43 else
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44 return luaL_error(L,"argument #1 mismatch: expected userdata");
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45
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46 s = lua_tostring(L,2);
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47
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48 // dcMode( g_pCallVM, DC_CALL_C_X86_WIN32_STD );
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49 dcReset( g_pCallVM );
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50
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51 char ch;
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52 int p = 3;
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53 while ( (ch = *s++) != DC_SIGCHAR_ENDARG)
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54 {
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55 switch(ch)
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56 {
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57 case DC_SIGCHAR_BOOL:
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58 dcArgBool(g_pCallVM, (DCbool) lua_toboolean(L, p) );
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59 break;
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60 case DC_SIGCHAR_CHAR:
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61 dcArgChar(g_pCallVM, (DCchar) lua_tonumber(L, p) );
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62 break;
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63 case DC_SIGCHAR_SHORT:
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64 dcArgShort(g_pCallVM, (DCshort) lua_tonumber(L, p) );
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65 break;
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66 case DC_SIGCHAR_INT:
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67 dcArgInt(g_pCallVM, (DCint) lua_tonumber(L, p) );
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68 break;
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69 case DC_SIGCHAR_LONG:
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70 dcArgLong(g_pCallVM, (DClong) lua_tonumber(L, p) );
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71 break;
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72 case DC_SIGCHAR_LONGLONG:
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73 dcArgLongLong(g_pCallVM, (DClonglong) lua_tonumber(L, p) );
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74 break;
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75 case DC_SIGCHAR_FLOAT:
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76 dcArgFloat(g_pCallVM, (DCfloat) lua_tonumber(L, p) );
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77 break;
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78 case DC_SIGCHAR_DOUBLE:
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79 dcArgDouble(g_pCallVM, (DCdouble) lua_tonumber(L, p) );
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80 break;
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81 case DC_SIGCHAR_POINTER:
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82 dcArgPointer(g_pCallVM, (DCpointer) lua_topointer(L, p) );
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83 break;
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84 case DC_SIGCHAR_STRING:
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85 dcArgPointer(g_pCallVM, (DCpointer) lua_tostring(L, p) );
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86 break;
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87 }
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88 ++p;
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89 }
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90
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91 switch(*s)
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92 {
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93 case DC_SIGCHAR_VOID:
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94 dcCallVoid(g_pCallVM, f);
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95 return 0;
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96 case DC_SIGCHAR_BOOL:
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97 lua_pushboolean( L, (int) dcCallBool(g_pCallVM, f) );
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98 break;
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99 case DC_SIGCHAR_CHAR:
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100 lua_pushnumber( L, (lua_Number) ( dcCallChar(g_pCallVM,f) ) );
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101 break;
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102 case DC_SIGCHAR_SHORT:
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103 lua_pushnumber( L, (lua_Number)( dcCallShort(g_pCallVM, f) ) );
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104 break;
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105 case DC_SIGCHAR_INT:
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106 lua_pushnumber( L, (lua_Number)( dcCallInt(g_pCallVM, f) ) );
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107 break;
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108 case DC_SIGCHAR_LONG:
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109 lua_pushnumber( L, (lua_Number)( dcCallLong(g_pCallVM, f) ) );
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110 break;
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111 case DC_SIGCHAR_LONGLONG:
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112 lua_pushnumber( L, (lua_Number)( dcCallLongLong(g_pCallVM, f) ) );
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113 break;
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114 case DC_SIGCHAR_FLOAT:
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115 lua_pushnumber( L, (lua_Number) dcCallFloat(g_pCallVM, f) );
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116 break;
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117 case DC_SIGCHAR_DOUBLE:
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118 lua_pushnumber( L, (lua_Number) dcCallDouble(g_pCallVM, f) );
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119 break;
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120 case DC_SIGCHAR_STRING:
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121 lua_pushstring( L, (const char*) dcCallPointer(g_pCallVM, f) );
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122 break;
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123 case DC_SIGCHAR_POINTER:
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124 lua_pushlightuserdata( L, dcCallPointer(g_pCallVM, f) );
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125 break;
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126 }
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127 return 1;
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128 }
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129
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130 int main(int argc, char* argv[])
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131 {
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132 lua_State* L;
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133 lua_Debug d;
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134 int status;
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135 const char* scriptFilename = argv[1];
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136
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137 L = lua_open();
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138 assert(L);
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139 luaL_openlibs(L);
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140 luaopen_base(L);
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141
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142 g_pCallVM = dcNewCallVM(256);
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143
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144 lua_register(L, "dcLoad", lua_dcload);
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145 lua_register(L, "dcFind", lua_dcfind);
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146 lua_register(L, "dcCall", lua_dccall);
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147
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148 status = luaL_loadfile(L, scriptFilename);
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149
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150 if (status == 0)
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151 {
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152 status = lua_pcall(L, 0, LUA_MULTRET, 0);
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153 }
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154 if (status)
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155 {
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156 printf("error: %s\n", lua_tostring(L,-1));
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157 lua_pop(L, 1);
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158 }
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159
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160 dcFree(g_pCallVM);
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161
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162 lua_close(L);
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163 }
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