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// Copyright 2018 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.
package ring0
import (
"unsafe"
)
// eface mirrors runtime.eface.
type eface struct {
typ uintptr
data unsafe.Pointer
}
// kernelAddr returns the kernel virtual address for the given object.
//
//go:nosplit
func kernelAddr(obj interface{}) uintptr {
e := (*eface)(unsafe.Pointer(&obj))
return KernelStartAddress | uintptr(e.data)
}
// kernelFunc returns the address of the given function.
//
//go:nosplit
func kernelFunc(fn uintptr) uintptr {
return KernelStartAddress | fn
}
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