mirror of https://github.com/jetkvm/kvm.git
43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package rt
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import (
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"unsafe"
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)
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// NoEscape hides a pointer from escape analysis. NoEscape is
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// the identity function but escape analysis doesn't think the
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// output depends on the input. NoEscape is inlined and currently
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// compiles down to zero instructions.
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// USE CAREFULLY!
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//go:nosplit
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//goland:noinspection GoVetUnsafePointer
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func NoEscape(p unsafe.Pointer) unsafe.Pointer {
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x := uintptr(p)
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return unsafe.Pointer(x ^ 0)
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}
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//go:nosplit
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func MoreStack(size uintptr)
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//go:nosplit
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func Add(ptr unsafe.Pointer, off uintptr) unsafe.Pointer {
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return unsafe.Pointer(uintptr(ptr) + off)
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}
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