diff options
Diffstat (limited to 'pkg/ring0/defs_arm64.go')
| -rw-r--r-- | pkg/ring0/defs_arm64.go | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/pkg/ring0/defs_arm64.go b/pkg/ring0/defs_arm64.go deleted file mode 100644 index dcb255fc8..000000000 --- a/pkg/ring0/defs_arm64.go +++ /dev/null @@ -1,138 +0,0 @@ -// Copyright 2019 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. - -// +build arm64 - -package ring0 - -import ( - "gvisor.dev/gvisor/pkg/usermem" -) - -var ( - // UserspaceSize is the total size of userspace. - UserspaceSize = uintptr(1) << (VirtualAddressBits()) - - // MaximumUserAddress is the largest possible user address. - MaximumUserAddress = (UserspaceSize - 1) & ^uintptr(usermem.PageSize-1) - - // KernelStartAddress is the starting kernel address. - KernelStartAddress = ^uintptr(0) - (UserspaceSize - 1) -) - -// KernelArchState contains architecture-specific state. -type KernelArchState struct { -} - -// CPUArchState contains CPU-specific arch state. -type CPUArchState struct { - // stack is the stack used for interrupts on this CPU. - stack [512]byte - - // errorCode is the error code from the last exception. - errorCode uintptr - - // errorType indicates the type of error code here, it is always set - // along with the errorCode value above. - // - // It will either by 1, which indicates a user error, or 0 indicating a - // kernel error. If the error code below returns false (kernel error), - // then it cannot provide relevant information about the last - // exception. - errorType uintptr - - // faultAddr is the value of far_el1. - faultAddr uintptr - - // ttbr0Kvm is the value of ttbr0_el1 for sentry. - ttbr0Kvm uintptr - - // ttbr0App is the value of ttbr0_el1 for applicaton. - ttbr0App uintptr - - // exception vector. - vecCode Vector - - // application context pointer. - appAddr uintptr - - // lazyVFP is the value of cpacr_el1. - lazyVFP uintptr - - // appASID is the asid value of guest application. - appASID uintptr -} - -// ErrorCode returns the last error code. -// -// The returned boolean indicates whether the error code corresponds to the -// last user error or not. If it does not, then fault information must be -// ignored. This is generally the result of a kernel fault while servicing a -// user fault. -// -//go:nosplit -func (c *CPU) ErrorCode() (value uintptr, user bool) { - return c.errorCode, c.errorType != 0 -} - -// ClearErrorCode resets the error code. -// -//go:nosplit -func (c *CPU) ClearErrorCode() { - c.errorCode = 0 // No code. - c.errorType = 1 // User mode. -} - -//go:nosplit -func (c *CPU) GetFaultAddr() (value uintptr) { - return c.faultAddr -} - -//go:nosplit -func (c *CPU) SetTtbr0Kvm(value uintptr) { - c.ttbr0Kvm = value -} - -//go:nosplit -func (c *CPU) SetTtbr0App(value uintptr) { - c.ttbr0App = value -} - -//go:nosplit -func (c *CPU) GetVector() (value Vector) { - return c.vecCode -} - -//go:nosplit -func (c *CPU) SetAppAddr(value uintptr) { - c.appAddr = value -} - -// GetLazyVFP returns the value of cpacr_el1. -//go:nosplit -func (c *CPU) GetLazyVFP() (value uintptr) { - return c.lazyVFP -} - -// SwitchArchOpts are embedded in SwitchOpts. -type SwitchArchOpts struct { - // UserASID indicates that the application ASID to be used on switch, - UserASID uint16 - - // KernelASID indicates that the kernel ASID to be used on return, - KernelASID uint16 -} - -func init() { -} |