From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- src/runtime/memclr_loong64.s | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 src/runtime/memclr_loong64.s (limited to 'src/runtime/memclr_loong64.s') diff --git a/src/runtime/memclr_loong64.s b/src/runtime/memclr_loong64.s new file mode 100644 index 0000000..7bb6f3d --- /dev/null +++ b/src/runtime/memclr_loong64.s @@ -0,0 +1,42 @@ +// Copyright 2022 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. + +#include "go_asm.h" +#include "textflag.h" + +// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr) +TEXT runtime·memclrNoHeapPointers(SB),NOSPLIT,$0-16 + MOVV ptr+0(FP), R6 + MOVV n+8(FP), R7 + ADDV R6, R7, R4 + + // if less than 8 bytes, do one byte at a time + SGTU $8, R7, R8 + BNE R8, out + + // do one byte at a time until 8-aligned + AND $7, R6, R8 + BEQ R8, words + MOVB R0, (R6) + ADDV $1, R6 + JMP -4(PC) + +words: + // do 8 bytes at a time if there is room + ADDV $-7, R4, R7 + + PCALIGN $16 + SGTU R7, R6, R8 + BEQ R8, out + MOVV R0, (R6) + ADDV $8, R6 + JMP -4(PC) + +out: + BEQ R6, R4, done + MOVB R0, (R6) + ADDV $1, R6 + JMP -3(PC) +done: + RET -- cgit v1.2.3