github.com/panjjo/go@v0.0.0-20161104043856-d62b31386338/src/runtime/memclr_plan9_amd64.s (about)

     1  // Copyright 2014 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  #include "textflag.h"
     6  
     7  // void runtime·memclrNoHeapPointers(void*, uintptr)
     8  TEXT runtime·memclrNoHeapPointers(SB),NOSPLIT,$0-16
     9  	MOVQ	ptr+0(FP), DI
    10  	MOVQ	n+8(FP), CX
    11  	MOVQ	CX, BX
    12  	ANDQ	$7, BX
    13  	SHRQ	$3, CX
    14  	MOVQ	$0, AX
    15  	CLD
    16  	REP
    17  	STOSQ
    18  	MOVQ	BX, CX
    19  	REP
    20  	STOSB
    21  	RET