chore(build): revert to sdl2

vendor/sdl-2.30.5/src/main/psp/SDL_psp_main.c

@@ -0,0 +1,68 @@
+/*
+    SDL_psp_main.c, placed in the public domain by Sam Lantinga  3/13/14
+*/
+#include "SDL_config.h"
+
+#ifdef __PSP__
+
+#include "SDL_main.h"
+#include <pspkernel.h>
+#include <pspthreadman.h>
+
+#ifdef main
+#undef main
+#endif
+
+/* 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.
+*/
+
+PSP_MODULE_INFO("SDL App", 0, 1, 0);
+PSP_MAIN_THREAD_ATTR(THREAD_ATTR_VFPU | THREAD_ATTR_USER);
+
+int sdl_psp_exit_callback(int arg1, int arg2, void *common)
+{
+    sceKernelExitGame();
+    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;
+    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[])
+{
+    sdl_psp_setup_callbacks();
+
+    SDL_SetMainReady();
+
+    (void)SDL_main(argc, argv);
+    return 0;
+}
+
+#endif /* __PSP__ */
+
+/* vi: set ts=4 sw=4 expandtab: */