grub/grub-core/kern/emu/cache_s.S

#ifndef GRUB_MACHINE_EMU
#error "This source is only meant for grub-emu platform"
#endif

#if defined(__i386__) || defined(__x86_64__)
/* Nothing is necessary.  */
#elif defined(__sparc__)
#include "../sparc64/cache.S"
#elif defined(__powerpc__)
#include "../powerpc/cache.S"
#elif defined(__ia64__) || defined(__arm__) || defined(__aarch64__) || defined(__mips__)
#else
#error "No target cpu type is defined"
#endif