diff options
Diffstat (limited to 'src/runtime/memclr_wasm.s')
| -rw-r--r-- | src/runtime/memclr_wasm.s | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/runtime/memclr_wasm.s b/src/runtime/memclr_wasm.s new file mode 100644 index 0000000..5a05304 --- /dev/null +++ b/src/runtime/memclr_wasm.s @@ -0,0 +1,39 @@ +// Copyright 2018 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 "textflag.h" + +// See memclrNoHeapPointers Go doc for important implementation constraints. + +// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr) +TEXT runtime·memclrNoHeapPointers(SB), NOSPLIT, $0-16 + MOVD ptr+0(FP), R0 + MOVD n+8(FP), R1 + +loop: + Loop + Get R1 + I64Eqz + If + RET + End + + Get R0 + I32WrapI64 + I64Const $0 + I64Store8 $0 + + Get R0 + I64Const $1 + I64Add + Set R0 + + Get R1 + I64Const $1 + I64Sub + Set R1 + + Br loop + End + UNDEF |