find_multiboot
int find_multiboot(char *, uint32_t, uint32_t *);
if (find_multiboot(bblock->file, buf_size, &mboot_off)
if (find_multiboot(mboot_scan, scan_size, &mboot_off)
if (find_multiboot(mboot_scan, sizeof (mboot_scan), &mboot_off)
if (find_multiboot(mboot_scan, sizeof (mboot_scan), &mboot_off)
if (find_multiboot(stage2->file, stage2->file_size, &mboot_off)
if (find_multiboot(buf, MBOOT_SCAN_SIZE, &mboot_off)