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	#include <sys/syscall.h> // For syscall numbers.			#include <sys/syscall.h> // For syscall numbers.

	namespace __llvm_libc {			namespace __llvm_libc {

	LLVM_LIBC_FUNCTION(int, gettimeofday,			LLVM_LIBC_FUNCTION(int, gettimeofday,
	(struct timeval * tv, [[maybe_unused]] void *unused)) {			(struct timeval * tv, [[maybe_unused]] void *unused)) {
	if (tv == nullptr)			if (tv == nullptr)
	return 0;			return 0;
	clockid_t clockid = CLOCK_REALTIME;
	struct timespec tp;			struct timespec tp;
	long ret_val =			long ret_val = __llvm_libc::syscall_impl(SYS_clock_gettime,
	__llvm_libc::syscall_impl(SYS_clock_gettime, static_cast<long>(clockid),			static_cast<long>(CLOCK_REALTIME),
	reinterpret_cast<long>(&tp));			reinterpret_cast<long>(&tp));
	// A negative return value indicates an error with the magnitude of the			// A negative return value indicates an error with the magnitude of the
	// value being the error code.			// value being the error code.
	if (ret_val < 0) {			if (ret_val < 0) {
	errno = -ret_val;			errno = -ret_val;
	return -1;			return -1;
	}			}
	tv->tv_sec = tp.tv_sec;			tv->tv_sec = tp.tv_sec;
	tv->tv_usec = tp.tv_nsec / 1000;			tv->tv_usec = tp.tv_nsec / 1000;
	return 0;			return 0;
	}			}

	} // namespace __llvm_libc			} // namespace __llvm_libc

[libc] [Obvious] Cleanup.ClosedPublic