gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/tools/checklinkname/test/test_unsafe.go (about)

     1  // Copyright 2021 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // Package test provides linkname test targets.
    16  package test
    17  
    18  import (
    19  	_ "unsafe" // for go:linkname.
    20  )
    21  
    22  //go:linkname detachedLinkname runtime.fastrand
    23  
    24  //go:linkname attachedLinkname runtime.entersyscall
    25  func attachedLinkname()
    26  
    27  // AttachedLinkname reexports attachedLinkname because go vet doesn't like an
    28  // exported go:linkname without a comment starting with "// AttachedLinkname".
    29  func AttachedLinkname() {
    30  	attachedLinkname()
    31  }
    32  
    33  // detachedLinkname has a linkname elsewhere in the file.
    34  func detachedLinkname() uint32