github.com/tcnksm/go@v0.0.0-20141208075154-439b32936367/src/runtime/memclr_ppc64x.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  // +build ppc64 ppc64le
     6  
     7  #include "textflag.h"
     8  
     9  // void runtime·memclr(void*, uintptr)
    10  TEXT runtime·memclr(SB),NOSPLIT,$0-16
    11  	MOVD	ptr+0(FP), R3
    12  	MOVD	n+8(FP), R4
    13  	CMP	R4, $0
    14  	BEQ	done
    15  	SUB	$1, R3
    16  	MOVD	R4, CTR
    17  	MOVBU	R0, 1(R3)
    18  	BC	25, 0, -1(PC) // bdnz+ $-4
    19  done:
    20  	RETURN