| // 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·memclrNoHeapPointers(void*, uintptr) | |
| TEXT runtime·memclrNoHeapPointers(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) | |
| words: | |
| // 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) | |
| out: | |
| BEQ R1, R4, done | |
| MOVB R0, (R1) | |
| ADDV $1, R1 | |
| JMP -3(PC) | |
| done: | |
| RET |