Spider.h

#define START_SECTION __attribute__ ((section (".text.start"), naked))

int(*IFopen)(void *this, const short *path, int flags) = 0x0022FE08;
int(*IFread)(void *this, unsigned int *read, unsigned int *buffer, unsigned int len) = 0x001686DC;
int(*IFwrite)(void *this, unsigned int *written, void *src, unsigned int len) = 0x00168764;
int (*GX_SetTextureCopy)(void *input_buffer, void *output_buffer, unsigned int size, int in_x, int in_y, int out_x, int out_y, int flags) = 0x0011DD48;
int (*GSPGPU_FlushDataCache)(void *addr, unsigned int len) = 0x00191504;
int (*svcSleepThread)(unsigned long long nanoseconds) = 0x0023FFE8;
void IFseek(void* handle, int off);
void *memcpy(void *destination, const void *source, int num);

int START_SECTION uvl_start (){
    __asm__ volatile (".word 0xE1A00000");
    payload();
    __asm__ volatile ("bx lr");
}

void IFseek(void* handle, int off){
    *((int *)handle + 1) = off;
}

void *memcpy(void *destination, const void *source, int num){
    unsigned char *dest = destination;
    unsigned char *src  = (unsigned char*)source;
    while (num) {
        *dest++ = *src++;
        num--;
    }
    return destination;
}