sparc64_memcpy
void *sparc64_memcpy(void *, const void *, size_t);
sparc64_memcpy(bi_next, new, size);
#define BCOPY(s, d, c) sparc64_memcpy((void *)LOADADDR(d), \
extern void* sparc64_memcpy(void *, const void *, size_t);