blob: 30a4af3c94d93b369e9c4cf879b71edcb11258e1 [file] [log] [blame]
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build mips64 mips64le
#include "textflag.h"
// void runtime·memclr(void*, uintptr)
TEXT runtime·memclr(SB),NOSPLIT,$0-16
MOVV ptr+0(FP), R1
MOVV n+8(FP), R2
ADDV R1, R2, R4
// if less than 8 bytes, do one byte at a time
SGTU $8, R2, R3
BNE R3, out
// do one byte at a time until 8-aligned
AND $7, R1, R3
BEQ R3, words
MOVB R0, (R1)
ADDV $1, R1
JMP -4(PC)
// do 8 bytes at a time if there is room
ADDV $-7, R4, R2
SGTU R2, R1, R3
BEQ R3, out
MOVV R0, (R1)
ADDV $8, R1
JMP -4(PC)
BEQ R1, R4, done
MOVB R0, (R1)
ADDV $1, R1
JMP -3(PC)