Initial commit

backends/platform/psp/psp_main.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+// Disable printf override in common/forbidden.h to avoid
+// clashes with pspdebug.h from the PSP SDK.
+// That header file uses
+//   __attribute__((format(printf,1,2)));
+// which gets messed up by our override mechanism; this could
+// be avoided by either changing the PSP SDK to use the equally
+// legal and valid
+//   __attribute__((format(__printf__,1,2)));
+// or by refining our printf override to use a varadic macro
+// (which then wouldn't be portable, though).
+// Anyway, for now we just disable the printf override globally
+// for the PSP port
+#define FORBIDDEN_SYMBOL_EXCEPTION_printf
+
+#define	USERSPACE_ONLY	//don't use kernel mode features
+
+#ifndef USERSPACE_ONLY
+#include <pspkernel.h>
+#include <pspdebug.h>
+#else
+#include <pspuser.h>
+#endif
+
+#include <psppower.h>
+
+#include "common/system.h"
+#include "engines/engine.h"
+#include "base/main.h"
+#include "base/plugins.h"
+
+#include "backends/platform/psp/powerman.h"
+#include "backends/platform/psp/thread.h"
+#include "backends/plugins/psp/psp-provider.h"
+#include "backends/platform/psp/psppixelformat.h"
+#include "backends/platform/psp/osys_psp.h"
+#include "backends/platform/psp/tests.h"	/* for unit/speed tests */
+#include "backends/platform/psp/trace.h"
+
+#ifdef ENABLE_PROFILING
+	#include <pspprof.h>
+#endif
+
+/**
+ * Define the module info section
+ *
+ * 2nd arg must 0x1000 so __init is executed in
+ * kernelmode for our loaderInit function
+ */
+#ifndef USERSPACE_ONLY
+PSP_MODULE_INFO("SCUMMVM-PSP", 0x1000, 1, 1);
+#else
+PSP_MODULE_INFO("SCUMMVM-PSP", 0, 1, 1);
+#endif
+
+/**
+ * THREAD_ATTR_USER causes the thread that the startup
+ * code (crt0.c) starts this program in to be in usermode
+ * even though the module was started in kernelmode
+ */
+PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);
+
+
+#ifndef USERSPACE_ONLY
+void MyExceptionHandler(PspDebugRegBlock *regs) {
+	/* Do normal initial dump, setup screen etc */
+
+	pspDebugScreenInit();
+
+	pspDebugScreenSetBackColor(0x00FF0000);
+	pspDebugScreenSetTextColor(0xFFFFFFFF);
+	pspDebugScreenClear();
+
+	pspDebugScreenPrintf("Exception Details:\n");
+	pspDebugDumpException(regs);
+
+	while (1) ;
+}
+
+/**
+ * Function that is called from _init in kernelmode before the
+ * main thread is started in usermode.
+ */
+__attribute__((constructor))
+void loaderInit() {
+	pspKernelSetKernelPC();
+	pspDebugInstallErrorHandler(MyExceptionHandler);
+}
+#endif
+
+/* Exit callback */
+int exit_callback(void) {
+
+#ifdef ENABLE_PROFILING
+	gprof_cleanup();
+#endif
+
+	sceKernelExitGame();
+	return 0;
+}
+
+/* Function for handling suspend/resume */
+int power_callback(int , int powerinfo, void *) {
+	if (powerinfo & PSP_POWER_CB_POWER_SWITCH || powerinfo & PSP_POWER_CB_SUSPENDING) {
+		PowerMan.suspend();
+	} else if (powerinfo & PSP_POWER_CB_RESUME_COMPLETE) {
+		PowerMan.resume();
+	}
+	return 0;
+}
+
+/* Callback thread */
+int CallbackThread(SceSize /*size*/, void *arg) {
+	int cbid;
+
+	cbid = sceKernelCreateCallback("Exit Callback", (SceKernelCallbackFunction)exit_callback, NULL);
+	sceKernelRegisterExitCallback(cbid);
+	/* Set up callbacks for PSPIoStream */
+
+	cbid = sceKernelCreateCallback("Power Callback", (SceKernelCallbackFunction)power_callback, 0);
+	if (cbid >= 0) {
+		if (scePowerRegisterCallback(-1, cbid) < 0) {
+			PSP_ERROR("Couldn't register callback for power_callback\n");
+		}
+	} else {
+		PSP_ERROR("Couldn't create a callback for power_callback\n");
+	}
+
+	sceKernelSleepThreadCB();
+	return 0;
+}
+
+/* Sets up the callback thread and returns its thread id */
+int SetupCallbacks(void) {
+	int thid = sceKernelCreateThread("power_thread", CallbackThread, PRIORITY_POWER_THREAD, STACK_POWER_THREAD, THREAD_ATTR_USER, 0);
+	if (thid >= 0) {
+		sceKernelStartThread(thid, 0, 0);
+	}
+
+	return thid;
+}
+
+#undef main
+int main(void) {
+	//change clock rate to 333mhz
+	scePowerSetClockFrequency(333, 333, 166);
+
+	PowerManager::instance();	// Setup power manager
+
+	SetupCallbacks();
+
+	static const char *argv[] = { "scummvm", NULL };
+	static int argc = sizeof(argv) / sizeof(char *) - 1;
+
+	g_system = new OSystem_PSP();
+	assert(g_system);
+
+#ifdef DYNAMIC_MODULES
+	PluginManager::instance().addPluginProvider(new PSPPluginProvider());
+#endif
+
+/* unit/speed tests */
+#if defined(PSP_ENABLE_UNIT_TESTS) || defined(PSP_ENABLE_SPEED_TESTS)
+	PSP_INFO_PRINT("running tests\n");
+	psp_tests();
+	sceKernelSleepThread();	// that's it. That's all we're doing
+#endif
+
+	int res = scummvm_main(argc, argv);
+
+	g_system->quit();	// TODO: Consider removing / replacing this!
+
+	PowerManager::destroy();	// get rid of PowerManager
+
+	sceKernelSleepThread();
+
+	return res;
+}