111 lines
2.3 KiB
Go
111 lines
2.3 KiB
Go
// Copyright 2019 The gVisor Authors.
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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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// +build arm64
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package ring0
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// Useful bits.
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const (
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_PGD_PGT_BASE = 0x1000
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_PGD_PGT_SIZE = 0x1000
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_PUD_PGT_BASE = 0x2000
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_PUD_PGT_SIZE = 0x1000
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_PMD_PGT_BASE = 0x3000
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_PMD_PGT_SIZE = 0x4000
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_PTE_PGT_BASE = 0x7000
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_PTE_PGT_SIZE = 0x1000
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_PSR_D_BIT = 0x00000200
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_PSR_A_BIT = 0x00000100
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_PSR_I_BIT = 0x00000080
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_PSR_F_BIT = 0x00000040
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)
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const (
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// PSR bits
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PSR_MODE_EL0t = 0x00000000
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PSR_MODE_EL1t = 0x00000004
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PSR_MODE_EL1h = 0x00000005
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PSR_MODE_MASK = 0x0000000f
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// KernelFlagsSet should always be set in the kernel.
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KernelFlagsSet = PSR_MODE_EL1h
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// UserFlagsSet are always set in userspace.
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UserFlagsSet = PSR_MODE_EL0t
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KernelFlagsClear = PSR_MODE_MASK
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UserFlagsClear = PSR_MODE_MASK
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PsrDefaultSet = _PSR_D_BIT | _PSR_A_BIT | _PSR_I_BIT | _PSR_F_BIT
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)
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// Vector is an exception vector.
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type Vector uintptr
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// Exception vectors.
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const (
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El1SyncInvalid = iota
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El1IrqInvalid
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El1FiqInvalid
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El1ErrorInvalid
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El1Sync
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El1Irq
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El1Fiq
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El1Error
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El0Sync
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El0Irq
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El0Fiq
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El0Error
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El0Sync_invalid
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El0Irq_invalid
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El0Fiq_invalid
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El0Error_invalid
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El1Sync_da
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El1Sync_ia
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El1Sync_sp_pc
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El1Sync_undef
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El1Sync_dbg
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El1Sync_inv
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El0Sync_svc
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El0Sync_da
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El0Sync_ia
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El0Sync_fpsimd_acc
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El0Sync_sve_acc
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El0Sync_sys
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El0Sync_sp_pc
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El0Sync_undef
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El0Sync_dbg
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El0Sync_inv
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_NR_INTERRUPTS
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)
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// System call vectors.
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const (
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Syscall Vector = El0Sync_svc
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PageFault Vector = El0Sync_da
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VirtualizationException Vector = El0Error
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)
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// VirtualAddressBits returns the number bits available for virtual addresses.
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func VirtualAddressBits() uint32 {
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return 48
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}
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// PhysicalAddressBits returns the number of bits available for physical addresses.
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func PhysicalAddressBits() uint32 {
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return 40
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}
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