1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build !faketime
6
7#include "go_asm.h"
8#include "textflag.h"
9#include "time_windows.h"
10
11TEXT time·now(SB),NOSPLIT,$0-24
12	MOVQ	$_INTERRUPT_TIME, DI
13	MOVQ	time_lo(DI), AX
14	IMULQ	$100, AX
15	MOVQ	AX, mono+16(FP)
16
17	MOVQ	$_SYSTEM_TIME, DI
18	MOVQ	time_lo(DI), AX
19	MOVQ	$116444736000000000, DI
20	SUBQ	DI, AX
21	IMULQ	$100, AX
22
23	// generated code for
24	//	func f(x uint64) (uint64, uint64) { return x/1000000000, x%1000000000 }
25	// adapted to reduce duplication
26	MOVQ	AX, CX
27	MOVQ	$1360296554856532783, AX
28	MULQ	CX
29	ADDQ	CX, DX
30	RCRQ	$1, DX
31	SHRQ	$29, DX
32	MOVQ	DX, sec+0(FP)
33	IMULQ	$1000000000, DX
34	SUBQ	DX, CX
35	MOVL	CX, nsec+8(FP)
36	RET
37