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fceux
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Multiple Lua support fixes: 

- Do not crash when a Lua script calls rom.gethash when no ROM is loaded
- Do NOT assume the error message from lua_pcall will always be in stack slot 1, as sometimes it won't be
This commit is contained in:
TheRealQuantam 2024-01-30 02:41:42 -08:00
parent 813d4c0c4b c7330d4543
commit c56b234b85
1 changed files with 22 additions and 18 deletions
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30
src/lua-engine.cpp
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@ -663,13 +663,6 @@ static int emu_loadrom(lua_State *L)
extern void LoadRecentRom(int slot);
LoadRecentRom(0);
}
if ( GameInfo )
{
//printf("Currently Loaded ROM: '%s'\n", GameInfo->filename );
lua_pushstring(L, GameInfo->filename);
return 1;
}
return 0;
#elif defined(__QT_DRIVER__)
const char *nameo2 = luaL_checkstring(L,1);
std::string nameo;
@ -685,15 +678,17 @@ static int emu_loadrom(lua_State *L)
// //printf("Failed to Load ROM: '%s'\n", nameo );
// reloadLastGame();
//}
#endif
#if defined(__WIN_DRIVER__) || defined(__QT_DRIVER__)
if ( GameInfo )
{
//printf("Currently Loaded ROM: '%s'\n", GameInfo->filename );
lua_pushstring(L, GameInfo->filename);
return 1;
} else {
return 0;
}
#endif
return 0;
}
@ -1507,12 +1502,18 @@ static int rom_getfilename(lua_State *L) {
static int rom_gethash(lua_State *L) {
const char *type = luaL_checkstring(L, 1);
if (GameInfo != nullptr)
{
MD5DATA md5hash = GameInfo->MD5;
if (!type) lua_pushstring(L, "");
else if (!stricmp(type, "md5")) lua_pushstring(L, md5_asciistr(md5hash));
else if (!stricmp(type, "base64")) lua_pushstring(L, BytesToString(md5hash.data, MD5DATA::size).c_str());
else lua_pushstring(L, "");
}
else
lua_pushnil(L);
return 1;
}
@ -2077,7 +2078,7 @@ static int memory_setregister(lua_State *L)
}
// Forces a stack trace and returns the string
static const char *CallLuaTraceback(lua_State *L) {
static const char *CallLuaTraceback(lua_State *L, int msgDepth = -1) {
lua_getfield(L, LUA_GLOBALSINDEX, "debug");
if (!lua_istable(L, -1)) {
lua_pop(L, 1);
@ -2090,20 +2091,23 @@ static const char *CallLuaTraceback(lua_State *L) {
return "";
}
lua_pushvalue(L, 1);
if (msgDepth < 0)
msgDepth -= 2; // We pushed 2 onto the stack
lua_pushvalue(L, msgDepth);
lua_call(L, 1, 1);
return lua_tostring(L, -1);
}
void HandleCallbackError(lua_State* L, bool stop)
void HandleCallbackError(lua_State* L, bool stop, int msgDepth = -1)
{
//if(L->errfunc || L->errorJmp)
// luaL_error(L, "%s", lua_tostring(L,-1));
//else
{
const char *trace = CallLuaTraceback(L);
const char *trace = CallLuaTraceback(L, msgDepth);
lua_pushnil(L);
lua_setfield(L, LUA_REGISTRYINDEX, guiCallbackTable);