main_test.c

#include <pspkernel.h>
#include <pspdebug.h>
#include <pspdisplay.h>
#include <pspctrl.h>

PSP_MODULE_INFO("PSPTest", 0, 1, 0);
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);

int exit_callback(int arg1, int arg2, void *common) {
    sceKernelExitGame();
    return 0;
}

int CallbackThread(SceSize args, void *argp) {
    int cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
    sceKernelRegisterExitCallback(cbid);
    sceKernelSleepThreadCB();
    return 0;
}

int SetupCallbacks(void) {
    int thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
    if(thid >= 0) {
        sceKernelStartThread(thid, 0, 0);
    }
    return thid;
}

int main(int argc, char *argv[]) {
    SetupCallbacks();
    
    pspDebugScreenInit();
    pspDebugScreenPrintf("PSP Test Program\n");
    pspDebugScreenPrintf("If you see this, basic code works!\n");
    pspDebugScreenPrintf("Press START to exit\n");
    
    SceCtrlData pad;
    while(1) {
        sceCtrlReadBufferPositive(&pad, 1);
        
        if (pad.Buttons & PSP_CTRL_START) {
            break;
        }
        
        sceDisplayWaitVblankStart();
    }
    
    sceKernelExitGame();
    return 0;
}