67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// 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
|
|
|
|
// Init initializes a new kernel.
|
|
//
|
|
// N.B. that constraints on KernelOpts must be satisfied.
|
|
//
|
|
//go:nosplit
|
|
func (k *Kernel) Init(opts KernelOpts) {
|
|
k.init(opts)
|
|
}
|
|
|
|
// Halt halts execution.
|
|
func Halt()
|
|
|
|
// defaultHooks implements hooks.
|
|
type defaultHooks struct{}
|
|
|
|
// KernelSyscall implements Hooks.KernelSyscall.
|
|
//
|
|
//go:nosplit
|
|
func (defaultHooks) KernelSyscall() { Halt() }
|
|
|
|
// KernelException implements Hooks.KernelException.
|
|
//
|
|
//go:nosplit
|
|
func (defaultHooks) KernelException(Vector) { Halt() }
|
|
|
|
// kernelSyscall is a trampoline.
|
|
//
|
|
//go:nosplit
|
|
func kernelSyscall(c *CPU) { c.hooks.KernelSyscall() }
|
|
|
|
// kernelException is a trampoline.
|
|
//
|
|
//go:nosplit
|
|
func kernelException(c *CPU, vector Vector) { c.hooks.KernelException(vector) }
|
|
|
|
// Init initializes a new CPU.
|
|
//
|
|
// Init allows embedding in other objects.
|
|
func (c *CPU) Init(k *Kernel, hooks Hooks) {
|
|
c.self = c // Set self reference.
|
|
c.kernel = k // Set kernel reference.
|
|
c.init() // Perform architectural init.
|
|
|
|
// Require hooks.
|
|
if hooks != nil {
|
|
c.hooks = hooks
|
|
} else {
|
|
c.hooks = defaultHooks{}
|
|
}
|
|
}
|