diff options
author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/emu/luaengine.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/emu/luaengine.cpp')
-rw-r--r-- | src/emu/luaengine.cpp | 1141 |
1 files changed, 1141 insertions, 0 deletions
diff --git a/src/emu/luaengine.cpp b/src/emu/luaengine.cpp new file mode 100644 index 00000000000..989cb78f72b --- /dev/null +++ b/src/emu/luaengine.cpp @@ -0,0 +1,1141 @@ +// license:BSD-3-Clause +// copyright-holders:Miodrag Milanovic,Luca Bruno +/*************************************************************************** + + luaengine.c + + Controls execution of the core MAME system. + +***************************************************************************/ + +#include <limits> +#include "lua.hpp" +#include "luabridge/Source/LuaBridge/LuaBridge.h" +#include <signal.h> +#include "emu.h" +#include "emuopts.h" +#include "osdepend.h" +#include "drivenum.h" +#include "ui/ui.h" +#include "luaengine.h" + +//************************************************************************** +// LUA ENGINE +//************************************************************************** + +#if !defined(LUA_PROMPT) +#define LUA_PROMPT "> " +#define LUA_PROMPT2 ">> " +#endif + +#if !defined(LUA_MAXINPUT) +#define LUA_MAXINPUT 512 +#endif + +#define lua_readline(b,p) \ + (fputs(p, stdout), fflush(stdout), /* show prompt */ \ + fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ + +static lua_State *globalL = NULL; + +#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) +#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout)) + +const char *const lua_engine::tname_ioport = "lua.ioport"; +lua_engine* lua_engine::luaThis = NULL; + +extern "C" { + int luaopen_lsqlite3(lua_State *L); +} + +static void lstop(lua_State *L, lua_Debug *ar) +{ + (void)ar; /* unused arg. */ + lua_sethook(L, NULL, 0, 0); + luaL_error(L, "interrupted!"); +} + + +static void laction(int i) +{ + signal(i, SIG_DFL); /* if another SIGINT happens before lstop, + terminate process (default action) */ + lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1); +} + +int lua_engine::report(int status) { + if (status != LUA_OK && !lua_isnil(m_lua_state, -1)) + { + const char *msg = lua_tostring(m_lua_state, -1); + if (msg == NULL) msg = "(error object is not a string)"; + lua_writestringerror("%s\n", msg); + lua_pop(m_lua_state, 1); + /* force a complete garbage collection in case of errors */ + lua_gc(m_lua_state, LUA_GCCOLLECT, 0); + } + return status; +} + + +static int traceback (lua_State *L) +{ + const char *msg = lua_tostring(L, 1); + if (msg) + luaL_traceback(L, L, msg, 1); + else if (!lua_isnoneornil(L, 1)) + { /* is there an error object? */ + if (!luaL_callmeta(L, 1, "__tostring")) /* try its 'tostring' metamethod */ + lua_pushliteral(L, "(no error message)"); + } + return 1; +} + + +int lua_engine::docall(int narg, int nres) +{ + int status; + int base = lua_gettop(m_lua_state) - narg; /* function index */ + lua_pushcfunction(m_lua_state, traceback); /* push traceback function */ + lua_insert(m_lua_state, base); /* put it under chunk and args */ + globalL = m_lua_state; /* to be available to 'laction' */ + signal(SIGINT, laction); + status = lua_pcall(m_lua_state, narg, nres, base); + signal(SIGINT, SIG_DFL); + lua_remove(m_lua_state, base); /* remove traceback function */ + return status; +} + +/* mark in error messages for incomplete statements */ +#define EOFMARK "<eof>" +#define marklen (sizeof(EOFMARK)/sizeof(char) - 1) + +int lua_engine::incomplete(int status) +{ + if (status == LUA_ERRSYNTAX) + { + size_t lmsg; + const char *msg = lua_tolstring(m_lua_state, -1, &lmsg); + if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) + { + lua_pop(m_lua_state, 1); + return 1; + } + } + return 0; /* else... */ +} + +lua_engine::hook::hook() +{ + L = NULL; + cb = -1; +} + +#if (defined(__sun__) && defined(__svr4__)) || defined(__ANDROID__) || defined(__OpenBSD__) +#undef _L +#endif + +void lua_engine::hook::set(lua_State *_L, int idx) +{ + if (L) + luaL_unref(L, LUA_REGISTRYINDEX, cb); + + if (lua_isnil(_L, idx)) { + L = NULL; + cb = -1; + + } else { + L = _L; + lua_pushvalue(_L, idx); + cb = luaL_ref(_L, LUA_REGISTRYINDEX); + } +} + +lua_State *lua_engine::hook::precall() +{ + lua_State *T = lua_newthread(L); + lua_rawgeti(T, LUA_REGISTRYINDEX, cb); + return T; +} + +void lua_engine::hook::call(lua_engine *engine, lua_State *T, int nparam) +{ + engine->resume(T, nparam, L); +} + +void lua_engine::resume(lua_State *L, int nparam, lua_State *root) +{ + int s = lua_resume(L, NULL, nparam); + switch(s) { + case LUA_OK: + if(!root) { + std::map<lua_State *, std::pair<lua_State *, int> >::iterator i = thread_registry.find(L); + if(i != thread_registry.end()) { + luaL_unref(i->second.first, LUA_REGISTRYINDEX, i->second.second); + thread_registry.erase(i); + } + } else + lua_pop(root, 1); + break; + + case LUA_YIELD: + if(root) { + int id = luaL_ref(root, LUA_REGISTRYINDEX); + thread_registry[L] = std::pair<lua_State *, int>(root, id); + } + break; + + default: + osd_printf_error("[LUA ERROR] %s\n", lua_tostring(L, -1)); + lua_pop(L, 1); + break; + } +} + +void lua_engine::resume(void *_L, INT32 param) +{ + resume(static_cast<lua_State *>(_L)); +} + +int lua_engine::l_ioport_write(lua_State *L) +{ + ioport_field *field = static_cast<ioport_field *>(getparam(L, 1, tname_ioport)); + luaL_argcheck(L, lua_isnumber(L, 2), 2, "value expected"); + field->set_value(lua_tointeger(L, 2)); + return 0; +} + +//------------------------------------------------- +// emu_app_name - return application name +//------------------------------------------------- + +int lua_engine::l_emu_app_name(lua_State *L) +{ + lua_pushstring(L, emulator_info::get_appname_lower()); + return 1; +} + +//------------------------------------------------- +// emu_app_version - return application version +//------------------------------------------------- + +int lua_engine::l_emu_app_version(lua_State *L) +{ + lua_pushstring(L, bare_build_version); + return 1; +} + + +//------------------------------------------------- +// emu_gamename - returns game full name +//------------------------------------------------- + +int lua_engine::l_emu_gamename(lua_State *L) +{ + lua_pushstring(L, luaThis->machine().system().description); + return 1; +} + +//------------------------------------------------- +// emu_romname - returns rom base name +//------------------------------------------------- + +int lua_engine::l_emu_romname(lua_State *L) +{ + lua_pushstring(L, luaThis->machine().basename()); + return 1; +} + +//------------------------------------------------- +// emu_pause/emu_unpause - pause/unpause game +//------------------------------------------------- + +int lua_engine::l_emu_pause(lua_State *L) +{ + luaThis->machine().pause(); + return 0; +} + +int lua_engine::l_emu_unpause(lua_State *L) +{ + luaThis->machine().resume(); + return 0; +} + +//------------------------------------------------- +// emu_keypost - post keys to natural keyboard +//------------------------------------------------- + +int lua_engine::l_emu_keypost(lua_State *L) +{ + const char *keys = luaL_checkstring(L,1); + luaThis->machine().ioport().natkeyboard().post_utf8(keys); + return 1; +} + +int lua_engine::l_emu_time(lua_State *L) +{ + lua_pushnumber(L, luaThis->machine().time().as_double()); + return 1; +} + +void lua_engine::emu_after_done(void *_h, INT32 param) +{ + hook *h = static_cast<hook *>(_h); + h->call(this, h->precall(), 0); + delete h; +} + +int lua_engine::emu_after(lua_State *L) +{ + luaL_argcheck(L, lua_isnumber(L, 1), 1, "waiting duration expected"); + struct hook *h = new hook; + h->set(L, 2); + machine().scheduler().timer_set(attotime::from_double(lua_tonumber(L, 1)), timer_expired_delegate(FUNC(lua_engine::emu_after_done), this), 0, h); + return 0; +} + +int lua_engine::l_emu_after(lua_State *L) +{ + return luaThis->emu_after(L); +} + +int lua_engine::emu_wait(lua_State *L) +{ + luaL_argcheck(L, lua_isnumber(L, 1), 1, "waiting duration expected"); + machine().scheduler().timer_set(attotime::from_double(lua_tonumber(L, 1)), timer_expired_delegate(FUNC(lua_engine::resume), this), 0, L); + return lua_yieldk(L, 0, 0, 0); +} + +int lua_engine::l_emu_wait(lua_State *L) +{ + return luaThis->emu_wait(L); +} + +void lua_engine::output_notifier(const char *outname, INT32 value) +{ + if (hook_output_cb.active()) { + lua_State *L = hook_output_cb.precall(); + lua_pushstring(L, outname); + lua_pushnumber(L, value); + hook_output_cb.call(this, L, 2); + } +} + +void lua_engine::s_output_notifier(const char *outname, INT32 value, void *param) +{ + static_cast<lua_engine *>(param)->output_notifier(outname, value); +} + +void lua_engine::emu_hook_output(lua_State *L) +{ + luaL_argcheck(L, lua_isfunction(L, 1), 1, "callback function expected"); + hook_output_cb.set(L, 1); + + if (!output_notifier_set) { + output_set_notifier(NULL, s_output_notifier, this); + output_notifier_set = true; + } +} + +int lua_engine::l_emu_hook_output(lua_State *L) +{ + luaThis->emu_hook_output(L); + return 0; +} + +int lua_engine::l_emu_set_hook(lua_State *L) +{ + luaThis->emu_set_hook(L); + return 0; +} + +void lua_engine::emu_set_hook(lua_State *L) +{ + luaL_argcheck(L, lua_isfunction(L, 1) || lua_isnil(L, 1), 1, "callback function expected"); + luaL_argcheck(L, lua_isstring(L, 2), 2, "message (string) expected"); + const char *hookname = luaL_checkstring(L,2); + + if (strcmp(hookname, "output") == 0) { + hook_output_cb.set(L, 1); + if (!output_notifier_set) { + output_set_notifier(NULL, s_output_notifier, this); + output_notifier_set = true; + } + } else if (strcmp(hookname, "frame") == 0) { + hook_frame_cb.set(L, 1); + } else { + lua_writestringerror("%s", "Unknown hook name, aborting.\n"); + } +} + +//------------------------------------------------- +// machine_get_screens - return table of available screens userdata +// -> manager:machine().screens[":screen"] +//------------------------------------------------- + +luabridge::LuaRef lua_engine::l_machine_get_screens(const running_machine *r) +{ + lua_State *L = luaThis->m_lua_state; + luabridge::LuaRef screens_table = luabridge::LuaRef::newTable(L); + + for (device_t *dev = r->first_screen(); dev != NULL; dev = dev->next()) { + screen_device *sc = dynamic_cast<screen_device *>(dev); + if (sc && sc->configured() && sc->started() && sc->type()) { + screens_table[sc->tag()] = sc; + } + } + + return screens_table; +} + +//------------------------------------------------- +// machine_get_devices - return table of available devices userdata +// -> manager:machine().devices[":maincpu"] +//------------------------------------------------- + +luabridge::LuaRef lua_engine::l_machine_get_devices(const running_machine *r) +{ + running_machine *m = const_cast<running_machine *>(r); + lua_State *L = luaThis->m_lua_state; + luabridge::LuaRef devs_table = luabridge::LuaRef::newTable(L); + + device_t *root = &(m->root_device()); + devs_table = devtree_dfs(root, devs_table); + + return devs_table; +} + +// private helper for get_devices - DFS visit all devices in a running machine +luabridge::LuaRef lua_engine::devtree_dfs(device_t *root, luabridge::LuaRef devs_table) +{ + if (root) { + for (device_t *dev = root->first_subdevice(); dev != NULL; dev = dev->next()) { + if (dev && dev->configured() && dev->started()) { + devs_table[dev->tag()] = dev; + devtree_dfs(dev, devs_table); + } + } + } + return devs_table; +} + +//------------------------------------------------- +// device_get_memspaces - return table of available address spaces userdata +// -> manager:machine().devices[":maincpu"].spaces["program"] +//------------------------------------------------- + +luabridge::LuaRef lua_engine::l_dev_get_memspaces(const device_t *d) +{ + device_t *dev = const_cast<device_t *>(d); + lua_State *L = luaThis->m_lua_state; + luabridge::LuaRef sp_table = luabridge::LuaRef::newTable(L); + + for (address_spacenum sp = AS_0; sp < ADDRESS_SPACES; sp++) { + if (dev->memory().has_space(sp)) { + sp_table[dev->memory().space(sp).name()] = &(dev->memory().space(sp)); + } + } + + return sp_table; +} + +//------------------------------------------------- +// device_get_state - return table of available state userdata +// -> manager:machine().devices[":maincpu"].state +//------------------------------------------------- + +luabridge::LuaRef lua_engine::l_dev_get_states(const device_t *d) +{ + device_t *dev = const_cast<device_t *>(d); + lua_State *L = luaThis->m_lua_state; + luabridge::LuaRef st_table = luabridge::LuaRef::newTable(L); + for (const device_state_entry *s = dev->state().state_first(); s != NULL; s = s->next()) { + // XXX: refrain from exporting non-visible entries? + if (s) { + st_table[s->symbol()] = const_cast<device_state_entry *>(s); + } + } + + return st_table; +} + +//------------------------------------------------- +// state_get_value - return value of a device state entry +// -> manager:machine().devices[":maincpu"].state["PC"].value +//------------------------------------------------- + +UINT64 lua_engine::l_state_get_value(const device_state_entry *d) +{ + device_state_interface *state = d->parent_state(); + if(state) { + luaThis->machine().save().dispatch_presave(); + return state->state_int(d->index()); + } else { + return 0; + } +} + +//------------------------------------------------- +// state_set_value - set value of a device state entry +// -> manager:machine().devices[":maincpu"].state["D0"].value = 0x0c00 +//------------------------------------------------- + +void lua_engine::l_state_set_value(device_state_entry *d, UINT64 val) +{ + device_state_interface *state = d->parent_state(); + if(state) { + state->set_state_int(d->index(), val); + luaThis->machine().save().dispatch_presave(); + } +} + +//------------------------------------------------- +// mem_read - templated memory readers for <sign>,<size> +// -> manager:machine().devices[":maincpu"].spaces["program"]:read_i8(0xC000) +//------------------------------------------------- + +template <typename T> +int lua_engine::lua_addr_space::l_mem_read(lua_State *L) +{ + address_space &sp = luabridge::Stack<address_space &>::get(L, 1); + luaL_argcheck(L, lua_isnumber(L, 2), 2, "address (integer) expected"); + offs_t address = lua_tounsigned(L, 2); + T mem_content = 0; + switch(sizeof(mem_content) * 8) { + case 8: + mem_content = sp.read_byte(address); + break; + case 16: + if ((address & 1) == 0) { + mem_content = sp.read_word(address); + } else { + mem_content = sp.read_word_unaligned(address); + } + break; + case 32: + if ((address & 3) == 0) { + mem_content = sp.read_dword(address); + } else { + mem_content = sp.read_dword_unaligned(address); + } + break; + case 64: + if ((address & 7) == 0) { + mem_content = sp.read_qword(address); + } else { + mem_content = sp.read_qword_unaligned(address); + } + break; + default: + break; + } + + if (std::numeric_limits<T>::is_signed) { + lua_pushinteger(L, mem_content); + } else { + lua_pushunsigned(L, mem_content); + } + + return 1; + +} + +//------------------------------------------------- +// mem_write - templated memory writer for <sign>,<size> +// -> manager:machine().devices[":maincpu"].spaces["program"]:write_u16(0xC000, 0xF00D) +//------------------------------------------------- + +template <typename T> +int lua_engine::lua_addr_space::l_mem_write(lua_State *L) +{ + address_space &sp = luabridge::Stack<address_space &>::get(L, 1); + luaL_argcheck(L, lua_isnumber(L, 2), 2, "address (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 3), 3, "value (integer) expected"); + offs_t address = lua_tounsigned(L, 2); + T val = lua_tounsigned(L, 3); + + switch(sizeof(val) * 8) { + case 8: + sp.write_byte(address, val); + break; + case 16: + if ((address & 1) == 0) { + sp.write_word(address, val); + } else { + sp.read_word_unaligned(address, val); + } + break; + case 32: + if ((address & 3) == 0) { + sp.write_dword(address, val); + } else { + sp.write_dword_unaligned(address, val); + } + break; + case 64: + if ((address & 7) == 0) { + sp.write_qword(address, val); + } else { + sp.write_qword_unaligned(address, val); + } + break; + default: + break; + } + + return 0; +} + +//------------------------------------------------- +// screen_height - return screen visible height +// -> manager:machine().screens[":screen"]:height() +//------------------------------------------------- + +int lua_engine::lua_screen::l_height(lua_State *L) +{ + screen_device *sc = luabridge::Stack<screen_device *>::get(L, 1); + if(!sc) { + return 0; + } + + lua_pushunsigned(L, sc->visible_area().height()); + return 1; +} + +//------------------------------------------------- +// screen_width - return screen visible width +// -> manager:machine().screens[":screen"]:width() +//------------------------------------------------- + +int lua_engine::lua_screen::l_width(lua_State *L) +{ + screen_device *sc = luabridge::Stack<screen_device *>::get(L, 1); + if(!sc) { + return 0; + } + + lua_pushunsigned(L, sc->visible_area().width()); + return 1; +} + +//------------------------------------------------- +// draw_box - draw a box on a screen container +// -> manager:machine().screens[":screen"]:draw_box(x1, y1, x2, y2, bgcolor, linecolor) +//------------------------------------------------- + +int lua_engine::lua_screen::l_draw_box(lua_State *L) +{ + screen_device *sc = luabridge::Stack<screen_device *>::get(L, 1); + if(!sc) { + return 0; + } + + // ensure that we got 6 numerical parameters + luaL_argcheck(L, lua_isnumber(L, 2), 2, "x1 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 3), 3, "y1 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 4), 4, "x2 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 5), 5, "y2 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 6), 6, "background color (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 7), 7, "outline color (integer) expected"); + + // retrieve all parameters + int sc_width = sc->visible_area().width(); + int sc_height = sc->visible_area().height(); + float x1, y1, x2, y2; + x1 = MIN(MAX(0, (float) lua_tonumber(L, 2)), sc_width-1) / static_cast<float>(sc_width); + y1 = MIN(MAX(0, (float) lua_tonumber(L, 3)), sc_height-1) / static_cast<float>(sc_height); + x2 = MIN(MAX(0, (float) lua_tonumber(L, 4)), sc_width-1) / static_cast<float>(sc_width); + y2 = MIN(MAX(0, (float) lua_tonumber(L, 5)), sc_height-1) / static_cast<float>(sc_height); + UINT32 bgcolor = lua_tounsigned(L, 6); + UINT32 fgcolor = lua_tounsigned(L, 7); + + // draw the box + render_container &rc = sc->container(); + ui_manager &ui = sc->machine().ui(); + ui.draw_outlined_box(&rc, x1, y1, x2, y2, fgcolor, bgcolor); + + return 0; +} + +//------------------------------------------------- +// draw_line - draw a line on a screen container +// -> manager:machine().screens[":screen"]:draw_line(x1, y1, x2, y2, linecolor) +//------------------------------------------------- + +int lua_engine::lua_screen::l_draw_line(lua_State *L) +{ + screen_device *sc = luabridge::Stack<screen_device *>::get(L, 1); + if(!sc) { + return 0; + } + + // ensure that we got 5 numerical parameters + luaL_argcheck(L, lua_isnumber(L, 2), 2, "x1 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 3), 3, "y1 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 4), 4, "x2 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 5), 5, "y2 (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 6), 6, "color (integer) expected"); + + // retrieve all parameters + int sc_width = sc->visible_area().width(); + int sc_height = sc->visible_area().height(); + float x1, y1, x2, y2; + x1 = MIN(MAX(0, (float) lua_tonumber(L, 2)), sc_width-1) / static_cast<float>(sc_width); + y1 = MIN(MAX(0, (float) lua_tonumber(L, 3)), sc_height-1) / static_cast<float>(sc_height); + x2 = MIN(MAX(0, (float) lua_tonumber(L, 4)), sc_width-1) / static_cast<float>(sc_width); + y2 = MIN(MAX(0, (float) lua_tonumber(L, 5)), sc_height-1) / static_cast<float>(sc_height); + UINT32 color = lua_tounsigned(L, 6); + + // draw the line + sc->container().add_line(x1, y1, x2, y2, UI_LINE_WIDTH, rgb_t(color), PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA)); + return 0; +} + +//------------------------------------------------- +// draw_text - draw text on a screen container +// -> manager:machine().screens[":screen"]:draw_text(x, y, message) +//------------------------------------------------- + +int lua_engine::lua_screen::l_draw_text(lua_State *L) +{ + screen_device *sc = luabridge::Stack<screen_device *>::get(L, 1); + if(!sc) { + return 0; + } + + // ensure that we got proper parameters + luaL_argcheck(L, lua_isnumber(L, 2), 2, "x (integer) expected"); + luaL_argcheck(L, lua_isnumber(L, 3), 3, "y (integer) expected"); + luaL_argcheck(L, lua_isstring(L, 4), 4, "message (string) expected"); + luaL_argcheck(L, lua_isinteger(L, 5) || lua_isnone(L, 5), 5, "optional argument: text color, integer expected (default: 0xffffffff)"); + + // retrieve all parameters + int sc_width = sc->visible_area().width(); + int sc_height = sc->visible_area().height(); + float x = MIN(MAX(0, (float) lua_tonumber(L, 2)), sc_width-1) / static_cast<float>(sc_width); + float y = MIN(MAX(0, (float) lua_tonumber(L, 3)), sc_height-1) / static_cast<float>(sc_height); + const char *msg = luaL_checkstring(L,4); + rgb_t textcolor = UI_TEXT_COLOR; + if (!lua_isnone(L, 5)) { + textcolor = rgb_t(lua_tounsigned(L, 5)); + } + + // draw the text + render_container &rc = sc->container(); + ui_manager &ui = sc->machine().ui(); + ui.draw_text_full(&rc, msg, x, y , (1.0f - x), + JUSTIFY_LEFT, WRAP_WORD, DRAW_NORMAL, textcolor, + UI_TEXT_BG_COLOR, NULL, NULL); + + return 0; +} + +void *lua_engine::checkparam(lua_State *L, int idx, const char *tname) +{ + const char *name; + + if(!lua_getmetatable(L, idx)) + return 0; + + lua_rawget(L, LUA_REGISTRYINDEX); + name = lua_tostring(L, -1); + if(!name || strcmp(name, tname)) { + lua_pop(L, 1); + return 0; + } + lua_pop(L, 1); + + return *static_cast<void **>(lua_touserdata(L, idx)); +} + +void *lua_engine::getparam(lua_State *L, int idx, const char *tname) +{ + void *p = checkparam(L, idx, tname); + char msg[256]; + sprintf(msg, "%s expected", tname); + luaL_argcheck(L, p, idx, msg); + return p; +} + +void lua_engine::push(lua_State *L, void *p, const char *tname) +{ + void **pp = static_cast<void **>(lua_newuserdata(L, sizeof(void *))); + *pp = p; + luaL_getmetatable(L, tname); + lua_setmetatable(L, -2); +} + +int lua_engine::l_emu_exit(lua_State *L) +{ + luaThis->machine().schedule_exit(); + return 1; +} + +int lua_engine::l_emu_start(lua_State *L) +{ + const char *system_name = luaL_checkstring(L,1); + + int index = driver_list::find(system_name); + if (index != -1) { + machine_manager::instance()->schedule_new_driver(driver_list::driver(index)); + luaThis->machine().schedule_hard_reset(); + } + return 1; +} + +int lua_engine::luaopen_ioport(lua_State *L) +{ + static const struct luaL_Reg ioport_funcs [] = { + { "write", l_ioport_write }, + { NULL, NULL } /* sentinel */ + }; + + luaL_newmetatable(L, tname_ioport); + lua_pushvalue(L, -1); + lua_pushstring(L, tname_ioport); + lua_rawset(L, LUA_REGISTRYINDEX); + lua_pushstring(L, "__index"); + lua_pushvalue(L, -2); + lua_settable(L, -3); + luaL_setfuncs(L, ioport_funcs, 0); + return 1; +} + +struct msg { + std::string text; + int ready; + std::string response; + int status; + int done; +} msg; + +osd_lock *lock; + +void lua_engine::serve_lua() +{ + osd_sleep(osd_ticks_per_second() / 1000 * 50); + printf("%s v%s - %s\n%s\n%s\n\n", emulator_info::get_applongname(),build_version,emulator_info::get_fulllongname(),emulator_info::get_copyright_info(),LUA_COPYRIGHT); + fflush(stdout); + char buff[LUA_MAXINPUT]; + std::string oldbuff; + + const char *b = LUA_PROMPT; + + do { + // Wait for input + fputs(b, stdout); fflush(stdout); /* show prompt */ + fgets(buff, LUA_MAXINPUT, stdin); + + // Create message + osd_lock_acquire(lock); + if (msg.ready == 0) { + msg.text = oldbuff; + if (oldbuff.length()!=0) msg.text.append("\n"); + msg.text.append(buff); + msg.ready = 1; + msg.done = 0; + } + osd_lock_release(lock); + + // Wait for response + int done = 0; + do { + osd_sleep(osd_ticks_per_second() / 1000); + osd_lock_acquire(lock); + done = msg.done; + osd_lock_release(lock); + } while (done==0); + + // Do action on client side + osd_lock_acquire(lock); + if (msg.status == -1){ + b = LUA_PROMPT2; + oldbuff = msg.response; + } + else { + b = LUA_PROMPT; + oldbuff = ""; + } + msg.done = 0; + osd_lock_release(lock); + + } while (1); +} + +/* +static void *serve_lua(void *param) +{ + lua_engine *engine = (lua_engine *)param; + engine->serve_lua(); + return NULL; +} +*/ + +//------------------------------------------------- +// lua_engine - constructor +//------------------------------------------------- + +lua_engine::lua_engine() +{ + m_machine = NULL; + luaThis = this; + m_lua_state = luaL_newstate(); /* create state */ + output_notifier_set = false; + + luaL_checkversion(m_lua_state); + lua_gc(m_lua_state, LUA_GCSTOP, 0); /* stop collector during initialization */ + luaL_openlibs(m_lua_state); /* open libraries */ + + luaopen_lsqlite3(m_lua_state); + + luaopen_ioport(m_lua_state); + + lua_gc(m_lua_state, LUA_GCRESTART, 0); + msg.ready = 0; + msg.status = 0; + msg.done = 0; + lock = osd_lock_alloc(); +} + +//------------------------------------------------- +// ~lua_engine - destructor +//------------------------------------------------- + +lua_engine::~lua_engine() +{ + close(); +} + + +void lua_engine::update_machine() +{ + lua_newtable(m_lua_state); + if (m_machine!=NULL) + { + // Create the ioport array + ioport_port *port = machine().ioport().first_port(); + while(port) { + ioport_field *field = port->first_field(); + while(field) { + if(field->name()) { + push(m_lua_state, field, tname_ioport); + lua_setfield(m_lua_state, -2, field->name()); + } + field = field->next(); + } + port = port->next(); + } + } + lua_setglobal(m_lua_state, "ioport"); +} + +//------------------------------------------------- +// initialize - initialize lua hookup to emu engine +//------------------------------------------------- + +void lua_engine::initialize() +{ + luabridge::getGlobalNamespace (m_lua_state) + .beginNamespace ("emu") + .addCFunction ("app_name", l_emu_app_name ) + .addCFunction ("app_version", l_emu_app_version ) + .addCFunction ("gamename", l_emu_gamename ) + .addCFunction ("romname", l_emu_romname ) + .addCFunction ("keypost", l_emu_keypost ) + .addCFunction ("hook_output", l_emu_hook_output ) + .addCFunction ("sethook", l_emu_set_hook ) + .addCFunction ("time", l_emu_time ) + .addCFunction ("wait", l_emu_wait ) + .addCFunction ("after", l_emu_after ) + .addCFunction ("exit", l_emu_exit ) + .addCFunction ("start", l_emu_start ) + .addCFunction ("pause", l_emu_pause ) + .addCFunction ("unpause", l_emu_unpause ) + .beginClass <machine_manager> ("manager") + .addFunction ("machine", &machine_manager::machine) + .addFunction ("options", &machine_manager::options) + .endClass () + .beginClass <running_machine> ("machine") + .addFunction ("exit", &running_machine::schedule_exit) + .addFunction ("hard_reset", &running_machine::schedule_hard_reset) + .addFunction ("soft_reset", &running_machine::schedule_soft_reset) + .addFunction ("save", &running_machine::schedule_save) + .addFunction ("load", &running_machine::schedule_load) + .addFunction ("system", &running_machine::system) + .addProperty <luabridge::LuaRef, void> ("devices", &lua_engine::l_machine_get_devices) + .addProperty <luabridge::LuaRef, void> ("screens", &lua_engine::l_machine_get_screens) + .endClass () + .beginClass <game_driver> ("game_driver") + .addData ("name", &game_driver::name) + .addData ("description", &game_driver::description) + .addData ("year", &game_driver::year) + .addData ("manufacturer", &game_driver::manufacturer) + .endClass () + .beginClass <device_t> ("device") + .addFunction ("name", &device_t::name) + .addFunction ("shortname", &device_t::shortname) + .addFunction ("tag", &device_t::tag) + .addProperty <luabridge::LuaRef, void> ("spaces", &lua_engine::l_dev_get_memspaces) + .addProperty <luabridge::LuaRef, void> ("state", &lua_engine::l_dev_get_states) + .endClass() + .beginClass <lua_addr_space> ("lua_addr_space") + .addCFunction ("read_i8", &lua_addr_space::l_mem_read<INT8>) + .addCFunction ("read_u8", &lua_addr_space::l_mem_read<UINT8>) + .addCFunction ("read_i16", &lua_addr_space::l_mem_read<INT16>) + .addCFunction ("read_u16", &lua_addr_space::l_mem_read<UINT16>) + .addCFunction ("read_i32", &lua_addr_space::l_mem_read<INT32>) + .addCFunction ("read_u32", &lua_addr_space::l_mem_read<UINT32>) + .addCFunction ("read_i64", &lua_addr_space::l_mem_read<INT64>) + .addCFunction ("read_u64", &lua_addr_space::l_mem_read<UINT64>) + .addCFunction ("write_i8", &lua_addr_space::l_mem_write<INT8>) + .addCFunction ("write_u8", &lua_addr_space::l_mem_write<UINT8>) + .addCFunction ("write_i16", &lua_addr_space::l_mem_write<INT16>) + .addCFunction ("write_u16", &lua_addr_space::l_mem_write<UINT16>) + .addCFunction ("write_i32", &lua_addr_space::l_mem_write<INT32>) + .addCFunction ("write_u32", &lua_addr_space::l_mem_write<UINT32>) + .addCFunction ("write_i64", &lua_addr_space::l_mem_write<INT64>) + .addCFunction ("write_u64", &lua_addr_space::l_mem_write<UINT64>) + .endClass() + .deriveClass <address_space, lua_addr_space> ("addr_space") + .addFunction("name", &address_space::name) + .endClass() + .beginClass <lua_screen> ("lua_screen_dev") + .addCFunction ("draw_box", &lua_screen::l_draw_box) + .addCFunction ("draw_line", &lua_screen::l_draw_line) + .addCFunction ("draw_text", &lua_screen::l_draw_text) + .addCFunction ("height", &lua_screen::l_height) + .addCFunction ("width", &lua_screen::l_width) + .endClass() + .deriveClass <screen_device, lua_screen> ("screen_dev") + .addFunction ("frame_number", &screen_device::frame_number) + .addFunction ("name", &screen_device::name) + .addFunction ("shortname", &screen_device::shortname) + .addFunction ("tag", &screen_device::tag) + .endClass() + .beginClass <device_state_entry> ("dev_space") + .addFunction ("name", &device_state_entry::symbol) + .addProperty <UINT64, UINT64> ("value", &lua_engine::l_state_get_value, &lua_engine::l_state_set_value) + .addFunction ("is_visible", &device_state_entry::visible) + .addFunction ("is_divider", &device_state_entry::divider) + .endClass() + .endNamespace(); + + luabridge::push (m_lua_state, machine_manager::instance()); + lua_setglobal(m_lua_state, "manager"); +} + +void lua_engine::start_console() +{ +} + +//------------------------------------------------- +// frame_hook - called at each frame refresh, used to draw a HUD +//------------------------------------------------- +bool lua_engine::frame_hook() +{ + bool is_cb_hooked = false; + if (m_machine != NULL) { + // invoke registered callback (if any) + is_cb_hooked = hook_frame_cb.active(); + if (is_cb_hooked) { + lua_State *L = hook_frame_cb.precall(); + hook_frame_cb.call(this, L, 0); + } + } + return is_cb_hooked; +} + +void lua_engine::periodic_check() +{ + osd_lock_acquire(lock); + if (msg.ready == 1) { + lua_settop(m_lua_state, 0); + int status = luaL_loadbuffer(m_lua_state, msg.text.c_str(), strlen(msg.text.c_str()), "=stdin"); + if (incomplete(status)==0) /* cannot try to add lines? */ + { + if (status == LUA_OK) status = docall(0, LUA_MULTRET); + report(status); + if (status == LUA_OK && lua_gettop(m_lua_state) > 0) /* any result to print? */ + { + luaL_checkstack(m_lua_state, LUA_MINSTACK, "too many results to print"); + lua_getglobal(m_lua_state, "print"); + lua_insert(m_lua_state, 1); + if (lua_pcall(m_lua_state, lua_gettop(m_lua_state) - 1, 0, 0) != LUA_OK) + lua_writestringerror("%s\n", lua_pushfstring(m_lua_state, + "error calling " LUA_QL("print") " (%s)", + lua_tostring(m_lua_state, -1))); + } + } + else + { + status = -1; + } + msg.status = status; + msg.response = msg.text; + msg.text = ""; + msg.ready = 0; + msg.done = 1; + } + osd_lock_release(lock); +} + +//------------------------------------------------- +// close - close and cleanup of lua engine +//------------------------------------------------- + +void lua_engine::close() +{ + lua_settop(m_lua_state, 0); /* clear stack */ + lua_close(m_lua_state); +} + +//------------------------------------------------- +// execute - load and execute script +//------------------------------------------------- + +void lua_engine::load_script(const char *filename) +{ + int s = luaL_loadfile(m_lua_state, filename); + report(s); + update_machine(); + start(); +} + +//------------------------------------------------- +// execute_string - execute script from string +//------------------------------------------------- + +void lua_engine::load_string(const char *value) +{ + int s = luaL_loadstring(m_lua_state, value); + report(s); + update_machine(); + start(); +} + +//------------------------------------------------- +// start - execute the loaded script +//------------------------------------------------- + +void lua_engine::start() +{ + resume(m_lua_state); +} + + +//************************************************************************** +// LuaBridge Stack specializations +//************************************************************************** + +namespace luabridge { + template <> + struct Stack <UINT64> { + static inline void push (lua_State* L, UINT64 value) { + lua_pushunsigned(L, static_cast <lua_Unsigned> (value)); + } + + static inline UINT64 get (lua_State* L, int index) { + return static_cast <UINT64> (luaL_checkunsigned (L, index)); + } + }; +} |