HelenOS sources

memcpy_to_uspace   54 kernel/generic/include/syscall/copy.h extern uintptr_t memcpy_to_uspace(uspace_addr_t uspace_dst, const void *src, size_t size);
memcpy_to_uspace  143 kernel/generic/src/syscall/copy.c 	rc = !memcpy_to_uspace(uspace_dst, src, size) ? EPERM : EOK;