Add PSP support

src/main/psp/SDL_psp_main.c

@@ -0,0 +1,80 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "SDL_main.h"
+#include <pspkernel.h>
+#include <pspdebug.h>
+#include <pspsdk.h>
+#include <pspthreadman.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/* If application's main() is redefined as SDL_main, and libSDLmain is
+   linked, then this file will create the standard exit callback,
+   define the PSP_MODULE_INFO macro, and exit back to the browser when
+   the program is finished. 
+
+   You can still override other parameters in your own code if you
+   desire, such as PSP_HEAP_SIZE_KB, PSP_MAIN_THREAD_ATTR,
+   PSP_MAIN_THREAD_STACK_SIZE, etc.
+*/
+
+extern int SDL_main(int argc, char *argv[]);
+
+PSP_MODULE_INFO("SDL App", 0, 1, 1);
+
+int sdl_psp_exit_callback(int arg1, int arg2, void *common)
+{
+	exit(0);
+	return 0;
+}
+
+int sdl_psp_callback_thread(SceSize args, void *argp)
+{
+	int cbid;
+	cbid = sceKernelCreateCallback("Exit Callback", 
+				       sdl_psp_exit_callback, NULL);
+	sceKernelRegisterExitCallback(cbid);
+	sceKernelSleepThreadCB();
+	return 0;
+}
+
+int sdl_psp_setup_callbacks(void)
+{
+	int thid = 0;
+	thid = sceKernelCreateThread("update_thread", 
+				     sdl_psp_callback_thread, 0x11, 0xFA0, 0, 0);
+	if(thid >= 0)
+		sceKernelStartThread(thid, 0, 0);
+	return thid;
+}
+
+int main(int argc, char *argv[])
+{
+	pspDebugScreenInit();
+	sdl_psp_setup_callbacks();
+
+	/* Register sceKernelExitGame() to be called when we exit */
+	atexit(sceKernelExitGame);
+
+	(void)SDL_main(argc, argv);
+	return 0;
+}