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 runtimememmove(void*, void*, uintptr) 8 TEXT runtimememmove(SB), NOSPLIT, $-8-24 9 MOVD to+0(FP), R3 10 MOVD from+8(FP), R4 11 MOVD n+16(FP), R5 12 CMP $0, R5 13 BNE check 14 RET 15 16 check: 17 CMP R3, R4 18 BLT backward 19 20 ADD R3, R5 21 loop: 22 MOVBU.P 1(R4), R6 23 MOVBU.P R6, 1(R3) 24 CMP R3, R5 25 BNE loop 26 RET 27 28 backward: 29 ADD R5, R4 30 ADD R3, R5 31 loop1: 32 MOVBU.W -1(R4), R6 33 MOVBU.W R6, -1(R5) 34 CMP R3, R5 35 BNE loop1 36 RET 37
