// the runtime's write function, since that adds the framing that
// reports the emulated time.

//go:linkname runtimeWrite runtime.write
func runtimeWrite(fd uintptr, p unsafe.Pointer, n int32) int32

func faketimeWrite(fd int, p []byte) int {
	var pp *byte
	if len(p) > 0 {
		pp = &p[0]
	}
	return int(runtimeWrite(uintptr(fd), unsafe.Pointer(pp), int32(len(p))))

	POPFL	// restore EFLAGS
	TESTL	$(1<<21), AX
	JNE 	has_cpuid

bad_proc: // show that the program requires MMX.
	MOVL	$2, 0(SP)
	MOVL	$bad_proc_msg<>(SB), 4(SP)
	MOVL	$0x3d, 8(SP)
	CALL	runtime·write(SB)
	MOVL	$1, 0(SP)
	CALL	runtime·exit(SB)
	CALL	runtime·abort(SB)

has_cpuid:
	MOVL	$0, AX
	CPUID
	MOVL	AX, SI
	CMPL	AX, $0
	JE	nocpuinfo

	CMPL	BX, $0x756E6547  // "Genu"

	RET

bad_cpu: // show that the program requires a certain microarchitecture level.
	MOVQ	$2, 0(SP)
	MOVQ	$bad_cpu_msg<>(SB), AX
	MOVQ	AX, 8(SP)
	MOVQ	$84, 16(SP)
	CALL	runtime·write(SB)
	MOVQ	$1, 0(SP)
	CALL	runtime·exit(SB)
	CALL	runtime·abort(SB)
	RET

	// Prevent dead-code elimination of debugCallV2 and debugPinnerV1, which are
	// intended to be called by debuggers.