67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// Copyright 2018 Google LLC
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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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package ring0
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// Init initializes a new kernel.
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//
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// N.B. that constraints on KernelOpts must be satisfied.
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//
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//go:nosplit
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func (k *Kernel) Init(opts KernelOpts) {
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k.init(opts)
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}
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// Halt halts execution.
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func Halt()
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// defaultHooks implements hooks.
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type defaultHooks struct{}
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// KernelSyscall implements Hooks.KernelSyscall.
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//
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//go:nosplit
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func (defaultHooks) KernelSyscall() { Halt() }
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// KernelException implements Hooks.KernelException.
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//
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//go:nosplit
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func (defaultHooks) KernelException(Vector) { Halt() }
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// kernelSyscall is a trampoline.
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//
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//go:nosplit
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func kernelSyscall(c *CPU) { c.hooks.KernelSyscall() }
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// kernelException is a trampoline.
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//
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//go:nosplit
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func kernelException(c *CPU, vector Vector) { c.hooks.KernelException(vector) }
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// Init initializes a new CPU.
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//
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// Init allows embedding in other objects.
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func (c *CPU) Init(k *Kernel, hooks Hooks) {
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c.self = c // Set self reference.
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c.kernel = k // Set kernel reference.
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c.init() // Perform architectural init.
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// Require hooks.
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if hooks != nil {
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c.hooks = hooks
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} else {
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c.hooks = defaultHooks{}
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}
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}
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