diff lua/luadc/luadc.c @ 0:0cfcc391201f

initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:26:28 +0100
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lua/luadc/luadc.c	Thu Mar 19 22:26:28 2015 +0100
@@ -0,0 +1,184 @@
+#include <lua.h>
+#include <lauxlib.h>
+#include <dyncall.h>
+#include <dyncall_signature.h>
+#include <dynload.h>
+
+#define LUA_DCLIBNAME "dc"
+
+DCCallVM* g_pCallVM;
+
+int luaDC_load(lua_State* L)
+{
+  void* handle;
+  if (lua_gettop(L) != 1) return luaL_error(L,"wrong number of arguments");
+  handle = dlLoadLibrary( lua_tostring(L,1) );
+  if (!handle) return luaL_error(L,"library not found");
+  lua_pushlightuserdata(L, handle);
+  return 1;
+}
+
+int luaDC_find(lua_State* L)
+{
+  void* h;
+  const char* s;
+  void* f;
+  if (lua_gettop(L) != 2) return luaL_error(L,"wrong number of arguments");
+  h = lua_touserdata(L, 1);
+  s = lua_tostring(L, 2);
+  f = dlFindSymbol(h, s);
+  if (!f) return luaL_error(L,"symbol not found");
+  lua_pushlightuserdata(L, f);
+  return 1;
+}
+
+int luaDC_mode(lua_State* L)
+{
+  if (lua_gettop(L) < 1) return luaL_error(L,"missing arguments");
+  dcMode(g_pCallVM, (DCint) lua_tonumber(L, 1) );
+  return 0;
+}
+
+int luaDC_call(lua_State* L)
+{
+  void* f;
+  const char* s;
+  if (lua_gettop(L) < 2) return luaL_error(L,"missing arguments");
+  
+  if ( lua_iscfunction(L,1) ) 
+    f = (void*) lua_tocfunction(L,1);    
+  else if (lua_islightuserdata(L,1) ) 
+    f = lua_touserdata(L, 1);
+  else
+    return luaL_error(L,"argument #1 mismatch: expected userdata");
+ 
+  s = lua_tostring(L,2);
+  
+  // dcMode( g_pCallVM, DC_CALL_C_DEFAULT );
+  dcReset( g_pCallVM );
+ 
+  char ch;
+  int p = 3;
+  while ( (ch = *s++) != DC_SIGCHAR_ENDARG)
+  {
+    switch(ch)
+    {
+      case DC_SIGCHAR_BOOL:
+        dcArgBool(g_pCallVM, (DCbool) lua_toboolean(L, p) );
+        break;
+      case DC_SIGCHAR_CHAR:
+        dcArgChar(g_pCallVM, (DCchar) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_SHORT:
+        dcArgShort(g_pCallVM, (DCshort) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_INT:
+        dcArgInt(g_pCallVM, (DCint) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_LONG:
+        dcArgLong(g_pCallVM, (DClong) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_LONGLONG:
+        dcArgLongLong(g_pCallVM, (DClonglong) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_FLOAT:
+        dcArgFloat(g_pCallVM, (DCfloat) lua_tonumber(L, p) );
+        break; 
+      case DC_SIGCHAR_DOUBLE:
+        dcArgDouble(g_pCallVM, (DCdouble) lua_tonumber(L, p) );
+        break;
+      case DC_SIGCHAR_POINTER:
+        dcArgPointer(g_pCallVM, (DCpointer) lua_topointer(L, p) );
+        break;
+      case DC_SIGCHAR_STRING:
+        dcArgPointer(g_pCallVM, (DCpointer) lua_tostring(L, p) );
+        break; 
+    }
+    ++p;
+  }
+
+  switch(*s)
+  {
+    case DC_SIGCHAR_VOID:
+      dcCallVoid(g_pCallVM, f);
+      return 0;
+    case DC_SIGCHAR_BOOL:   
+      lua_pushboolean( L, (int) dcCallBool(g_pCallVM, f) ); 
+      break;
+    case DC_SIGCHAR_CHAR:
+      lua_pushnumber( L, (lua_Number) ( dcCallChar(g_pCallVM,f) ) );
+      break;
+    case DC_SIGCHAR_SHORT:
+      lua_pushnumber( L, (lua_Number)( dcCallShort(g_pCallVM, f) ) );
+      break;
+    case DC_SIGCHAR_INT:
+      lua_pushnumber( L, (lua_Number)( dcCallInt(g_pCallVM, f) ) );
+      break;
+    case DC_SIGCHAR_LONG:
+      lua_pushnumber( L, (lua_Number)( dcCallLong(g_pCallVM, f) ) );
+      break;
+    case DC_SIGCHAR_LONGLONG:
+      lua_pushnumber( L, (lua_Number)( dcCallLongLong(g_pCallVM, f) ) );
+      break;
+    case DC_SIGCHAR_FLOAT:
+      lua_pushnumber( L, (lua_Number) dcCallFloat(g_pCallVM, f) );
+      break;
+    case DC_SIGCHAR_DOUBLE:
+      lua_pushnumber( L, (lua_Number) dcCallDouble(g_pCallVM, f) ); 
+      break;
+    case DC_SIGCHAR_STRING:
+      lua_pushstring( L, (const char*) dcCallPointer(g_pCallVM, f) );
+      break;
+    case DC_SIGCHAR_POINTER:
+      lua_pushlightuserdata( L, dcCallPointer(g_pCallVM, f) );
+      break;
+  }
+  return 1;
+}
+
+static const luaL_Reg dclib[] = 
+{
+  {"load", luaDC_load},
+  {"find", luaDC_find},
+  {"mode", luaDC_mode},
+  {"call", luaDC_call},
+  {NULL,NULL}
+};
+
+typedef struct 
+{
+  const char* name;
+  int value;
+} ModeEnum;
+
+ModeEnum gModeEnums[] = 
+{
+  "C_DEFAULT", DC_CALL_C_DEFAULT,
+  "C_X86_CDECL", DC_CALL_C_X86_CDECL,
+  "C_X86_WIN32_STD", DC_CALL_C_X86_WIN32_STD,
+  "C_X86_FAST_MS", DC_CALL_C_X86_WIN32_FAST_MS,
+  "C_X86_WIN32_THIS_MS", DC_CALL_C_X86_WIN32_THIS_MS,
+  "C_X86_WIN32_THIS_GNU", DC_CALL_C_X86_WIN32_THIS_GNU,
+  "C_X86_WIN32_FAST_GNU", DC_CALL_C_X86_WIN32_FAST_GNU,
+  "C_X64_WIN64", DC_CALL_C_X64_WIN64,
+  "C_PPC32_DARWIN", DC_CALL_C_PPC32_DARWIN,
+  "C_ARM", DC_CALL_C_ARM,
+  "C_MIPS_EABI", DC_CALL_C_MIPS32_EABI,
+  "C_MIPS_PSPSDK", DC_CALL_C_MIPS32_PSPSDK
+};
+
+LUA_API int luadc_open (lua_State* L)
+{
+  int i = 0, n = sizeof(gModeEnums)/sizeof(ModeEnum);
+  g_pCallVM = dcNewCallVM(256); 
+  luaL_register(L, LUA_DCLIBNAME, dclib);
+
+  for (i = 0; i < n ; ++i )
+  {
+    lua_pushnumber(L, gModeEnums[i].value);
+    lua_setfield(L, -2, gModeEnums[i].name);
+  
+  }
+  return 1; 
+}
+