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Diffstat (limited to 'pkg/syncevent/waiter_amd64.s')
| -rw-r--r-- | pkg/syncevent/waiter_amd64.s | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/pkg/syncevent/waiter_amd64.s b/pkg/syncevent/waiter_amd64.s new file mode 100644 index 000000000..985b56ae5 --- /dev/null +++ b/pkg/syncevent/waiter_amd64.s @@ -0,0 +1,32 @@ +// Copyright 2020 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "textflag.h" + +// See waiter_noasm_unsafe.go for a description of waiterUnlock. +// +// func waiterUnlock(g unsafe.Pointer, wg *unsafe.Pointer) bool +TEXT ·waiterUnlock(SB),NOSPLIT,$0-24 + MOVQ g+0(FP), DI + MOVQ wg+8(FP), SI + + MOVQ $·preparingG(SB), AX + LOCK + CMPXCHGQ DI, 0(SI) + + SETEQ AX + MOVB AX, ret+16(FP) + + RET + |