// 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 // Useful bits. const ( _PGD_PGT_BASE = 0x1000 _PGD_PGT_SIZE = 0x1000 _PUD_PGT_BASE = 0x2000 _PUD_PGT_SIZE = 0x1000 _PMD_PGT_BASE = 0x3000 _PMD_PGT_SIZE = 0x4000 _PTE_PGT_BASE = 0x7000 _PTE_PGT_SIZE = 0x1000 ) const ( // DAIF bits:debug, sError, IRQ, FIQ. _PSR_D_BIT = 0x00000200 _PSR_A_BIT = 0x00000100 _PSR_I_BIT = 0x00000080 _PSR_F_BIT = 0x00000040 _PSR_DAIF_SHIFT = 6 _PSR_DAIF_MASK = 0xf << _PSR_DAIF_SHIFT // PSR bits. _PSR_MODE_EL0t = 0x00000000 _PSR_MODE_EL1t = 0x00000004 _PSR_MODE_EL1h = 0x00000005 _PSR_MODE_MASK = 0x0000000f PsrFlagsClear = _PSR_MODE_MASK | _PSR_DAIF_MASK PsrModeMask = _PSR_MODE_MASK // KernelFlagsSet should always be set in the kernel. KernelFlagsSet = _PSR_MODE_EL1h | _PSR_D_BIT | _PSR_A_BIT | _PSR_I_BIT | _PSR_F_BIT // UserFlagsSet are always set in userspace. UserFlagsSet = _PSR_MODE_EL0t ) // Vector is an exception vector. type Vector uintptr // Exception vectors. const ( El1InvSync = iota El1InvIrq El1InvFiq El1InvError El1Sync El1Irq El1Fiq El1Err El0Sync El0Irq El0Fiq El0Err El0InvSync El0InvIrq El0InvFiq El0InvErr El1SyncDa El1SyncIa El1SyncSpPc El1SyncUndef El1SyncDbg El1SyncInv El0SyncSVC El0SyncDa El0SyncIa El0SyncFpsimdAcc El0SyncSveAcc El0SyncFpsimdExc El0SyncSys El0SyncSpPc El0SyncUndef El0SyncDbg El0SyncInv El0ErrNMI El0ErrBounce _NR_INTERRUPTS ) // System call vectors. const ( Syscall Vector = El0SyncSVC PageFault Vector = El0SyncDa VirtualizationException Vector = El0ErrBounce ) // VirtualAddressBits returns the number bits available for virtual addresses. func VirtualAddressBits() uint32 { return 48 } // PhysicalAddressBits returns the number of bits available for physical addresses. func PhysicalAddressBits() uint32 { return 40 }