faults.cc revision 12511
16019Shines@cs.fsu.edu/* 212509Schuan.zhu@arm.com * Copyright (c) 2010, 2012-2014, 2016-2018 ARM Limited 37093Sgblack@eecs.umich.edu * All rights reserved 47093Sgblack@eecs.umich.edu * 57093Sgblack@eecs.umich.edu * The license below extends only to copyright in the software and shall 67093Sgblack@eecs.umich.edu * not be construed as granting a license to any other intellectual 77093Sgblack@eecs.umich.edu * property including but not limited to intellectual property relating 87093Sgblack@eecs.umich.edu * to a hardware implementation of the functionality of the software 97093Sgblack@eecs.umich.edu * licensed hereunder. You may use the software subject to the license 107093Sgblack@eecs.umich.edu * terms below provided that you ensure that this notice is replicated 117093Sgblack@eecs.umich.edu * unmodified and in its entirety in all distributions of the software, 127093Sgblack@eecs.umich.edu * modified or unmodified, in source code or in binary form. 137093Sgblack@eecs.umich.edu * 146019Shines@cs.fsu.edu * Copyright (c) 2003-2005 The Regents of The University of Michigan 156019Shines@cs.fsu.edu * Copyright (c) 2007-2008 The Florida State University 166019Shines@cs.fsu.edu * All rights reserved. 176019Shines@cs.fsu.edu * 186019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 196019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 206019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 216019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 226019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 236019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 246019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 256019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 266019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 276019Shines@cs.fsu.edu * this software without specific prior written permission. 286019Shines@cs.fsu.edu * 296019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 306019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 316019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 326019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 336019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 346019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 356019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 366019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 376019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 386019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 396019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 406019Shines@cs.fsu.edu * 416735Sgblack@eecs.umich.edu * Authors: Ali Saidi 426735Sgblack@eecs.umich.edu * Gabe Black 4310037SARM gem5 Developers * Giacomo Gabrielli 4410037SARM gem5 Developers * Thomas Grocutt 456019Shines@cs.fsu.edu */ 466019Shines@cs.fsu.edu 476019Shines@cs.fsu.edu#include "arch/arm/faults.hh" 4811793Sbrandon.potter@amd.com 4911793Sbrandon.potter@amd.com#include "arch/arm/insts/static_inst.hh" 5010037SARM gem5 Developers#include "arch/arm/system.hh" 5110037SARM gem5 Developers#include "arch/arm/utility.hh" 5210037SARM gem5 Developers#include "base/compiler.hh" 538229Snate@binkert.org#include "base/trace.hh" 548229Snate@binkert.org#include "cpu/base.hh" 556019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 568232Snate@binkert.org#include "debug/Faults.hh" 578782Sgblack@eecs.umich.edu#include "sim/full_system.hh" 586019Shines@cs.fsu.edu 596019Shines@cs.fsu.edunamespace ArmISA 606019Shines@cs.fsu.edu{ 616019Shines@cs.fsu.edu 6210037SARM gem5 Developersuint8_t ArmFault::shortDescFaultSources[] = { 6310037SARM gem5 Developers 0x01, // AlignmentFault 6410037SARM gem5 Developers 0x04, // InstructionCacheMaintenance 6510037SARM gem5 Developers 0xff, // SynchExtAbtOnTranslTableWalkL0 (INVALID) 6610037SARM gem5 Developers 0x0c, // SynchExtAbtOnTranslTableWalkL1 6710037SARM gem5 Developers 0x0e, // SynchExtAbtOnTranslTableWalkL2 6810037SARM gem5 Developers 0xff, // SynchExtAbtOnTranslTableWalkL3 (INVALID) 6910037SARM gem5 Developers 0xff, // SynchPtyErrOnTranslTableWalkL0 (INVALID) 7010037SARM gem5 Developers 0x1c, // SynchPtyErrOnTranslTableWalkL1 7110037SARM gem5 Developers 0x1e, // SynchPtyErrOnTranslTableWalkL2 7210037SARM gem5 Developers 0xff, // SynchPtyErrOnTranslTableWalkL3 (INVALID) 7310037SARM gem5 Developers 0xff, // TranslationL0 (INVALID) 7410037SARM gem5 Developers 0x05, // TranslationL1 7510037SARM gem5 Developers 0x07, // TranslationL2 7610037SARM gem5 Developers 0xff, // TranslationL3 (INVALID) 7710037SARM gem5 Developers 0xff, // AccessFlagL0 (INVALID) 7810037SARM gem5 Developers 0x03, // AccessFlagL1 7910037SARM gem5 Developers 0x06, // AccessFlagL2 8010037SARM gem5 Developers 0xff, // AccessFlagL3 (INVALID) 8110037SARM gem5 Developers 0xff, // DomainL0 (INVALID) 8210037SARM gem5 Developers 0x09, // DomainL1 8310037SARM gem5 Developers 0x0b, // DomainL2 8410037SARM gem5 Developers 0xff, // DomainL3 (INVALID) 8510037SARM gem5 Developers 0xff, // PermissionL0 (INVALID) 8610037SARM gem5 Developers 0x0d, // PermissionL1 8710037SARM gem5 Developers 0x0f, // PermissionL2 8810037SARM gem5 Developers 0xff, // PermissionL3 (INVALID) 8910037SARM gem5 Developers 0x02, // DebugEvent 9010037SARM gem5 Developers 0x08, // SynchronousExternalAbort 9110037SARM gem5 Developers 0x10, // TLBConflictAbort 9210037SARM gem5 Developers 0x19, // SynchPtyErrOnMemoryAccess 9310037SARM gem5 Developers 0x16, // AsynchronousExternalAbort 9410037SARM gem5 Developers 0x18, // AsynchPtyErrOnMemoryAccess 9510037SARM gem5 Developers 0xff, // AddressSizeL0 (INVALID) 9610037SARM gem5 Developers 0xff, // AddressSizeL1 (INVALID) 9710037SARM gem5 Developers 0xff, // AddressSizeL2 (INVALID) 9810037SARM gem5 Developers 0xff, // AddressSizeL3 (INVALID) 9910037SARM gem5 Developers 0x40, // PrefetchTLBMiss 10010037SARM gem5 Developers 0x80 // PrefetchUncacheable 10110037SARM gem5 Developers}; 1026019Shines@cs.fsu.edu 10310037SARM gem5 Developersstatic_assert(sizeof(ArmFault::shortDescFaultSources) == 10410037SARM gem5 Developers ArmFault::NumFaultSources, 10510037SARM gem5 Developers "Invalid size of ArmFault::shortDescFaultSources[]"); 1066019Shines@cs.fsu.edu 10710037SARM gem5 Developersuint8_t ArmFault::longDescFaultSources[] = { 10810037SARM gem5 Developers 0x21, // AlignmentFault 10910037SARM gem5 Developers 0xff, // InstructionCacheMaintenance (INVALID) 11010037SARM gem5 Developers 0xff, // SynchExtAbtOnTranslTableWalkL0 (INVALID) 11110037SARM gem5 Developers 0x15, // SynchExtAbtOnTranslTableWalkL1 11210037SARM gem5 Developers 0x16, // SynchExtAbtOnTranslTableWalkL2 11310037SARM gem5 Developers 0x17, // SynchExtAbtOnTranslTableWalkL3 11410037SARM gem5 Developers 0xff, // SynchPtyErrOnTranslTableWalkL0 (INVALID) 11510037SARM gem5 Developers 0x1d, // SynchPtyErrOnTranslTableWalkL1 11610037SARM gem5 Developers 0x1e, // SynchPtyErrOnTranslTableWalkL2 11710037SARM gem5 Developers 0x1f, // SynchPtyErrOnTranslTableWalkL3 11810037SARM gem5 Developers 0xff, // TranslationL0 (INVALID) 11910037SARM gem5 Developers 0x05, // TranslationL1 12010037SARM gem5 Developers 0x06, // TranslationL2 12110037SARM gem5 Developers 0x07, // TranslationL3 12210037SARM gem5 Developers 0xff, // AccessFlagL0 (INVALID) 12310037SARM gem5 Developers 0x09, // AccessFlagL1 12410037SARM gem5 Developers 0x0a, // AccessFlagL2 12510037SARM gem5 Developers 0x0b, // AccessFlagL3 12610037SARM gem5 Developers 0xff, // DomainL0 (INVALID) 12710037SARM gem5 Developers 0x3d, // DomainL1 12810037SARM gem5 Developers 0x3e, // DomainL2 12910037SARM gem5 Developers 0xff, // DomainL3 (RESERVED) 13010037SARM gem5 Developers 0xff, // PermissionL0 (INVALID) 13110037SARM gem5 Developers 0x0d, // PermissionL1 13210037SARM gem5 Developers 0x0e, // PermissionL2 13310037SARM gem5 Developers 0x0f, // PermissionL3 13410037SARM gem5 Developers 0x22, // DebugEvent 13510037SARM gem5 Developers 0x10, // SynchronousExternalAbort 13610037SARM gem5 Developers 0x30, // TLBConflictAbort 13710037SARM gem5 Developers 0x18, // SynchPtyErrOnMemoryAccess 13810037SARM gem5 Developers 0x11, // AsynchronousExternalAbort 13910037SARM gem5 Developers 0x19, // AsynchPtyErrOnMemoryAccess 14010037SARM gem5 Developers 0xff, // AddressSizeL0 (INVALID) 14110037SARM gem5 Developers 0xff, // AddressSizeL1 (INVALID) 14210037SARM gem5 Developers 0xff, // AddressSizeL2 (INVALID) 14310037SARM gem5 Developers 0xff, // AddressSizeL3 (INVALID) 14410037SARM gem5 Developers 0x40, // PrefetchTLBMiss 14510037SARM gem5 Developers 0x80 // PrefetchUncacheable 14610037SARM gem5 Developers}; 1476019Shines@cs.fsu.edu 14810037SARM gem5 Developersstatic_assert(sizeof(ArmFault::longDescFaultSources) == 14910037SARM gem5 Developers ArmFault::NumFaultSources, 15010037SARM gem5 Developers "Invalid size of ArmFault::longDescFaultSources[]"); 1516019Shines@cs.fsu.edu 15210037SARM gem5 Developersuint8_t ArmFault::aarch64FaultSources[] = { 15310037SARM gem5 Developers 0x21, // AlignmentFault 15410037SARM gem5 Developers 0xff, // InstructionCacheMaintenance (INVALID) 15510037SARM gem5 Developers 0x14, // SynchExtAbtOnTranslTableWalkL0 15610037SARM gem5 Developers 0x15, // SynchExtAbtOnTranslTableWalkL1 15710037SARM gem5 Developers 0x16, // SynchExtAbtOnTranslTableWalkL2 15810037SARM gem5 Developers 0x17, // SynchExtAbtOnTranslTableWalkL3 15910037SARM gem5 Developers 0x1c, // SynchPtyErrOnTranslTableWalkL0 16010037SARM gem5 Developers 0x1d, // SynchPtyErrOnTranslTableWalkL1 16110037SARM gem5 Developers 0x1e, // SynchPtyErrOnTranslTableWalkL2 16210037SARM gem5 Developers 0x1f, // SynchPtyErrOnTranslTableWalkL3 16310037SARM gem5 Developers 0x04, // TranslationL0 16410037SARM gem5 Developers 0x05, // TranslationL1 16510037SARM gem5 Developers 0x06, // TranslationL2 16610037SARM gem5 Developers 0x07, // TranslationL3 16710037SARM gem5 Developers 0x08, // AccessFlagL0 16810037SARM gem5 Developers 0x09, // AccessFlagL1 16910037SARM gem5 Developers 0x0a, // AccessFlagL2 17010037SARM gem5 Developers 0x0b, // AccessFlagL3 17110037SARM gem5 Developers // @todo: Section & Page Domain Fault in AArch64? 17210037SARM gem5 Developers 0xff, // DomainL0 (INVALID) 17310037SARM gem5 Developers 0xff, // DomainL1 (INVALID) 17410037SARM gem5 Developers 0xff, // DomainL2 (INVALID) 17510037SARM gem5 Developers 0xff, // DomainL3 (INVALID) 17610037SARM gem5 Developers 0x0c, // PermissionL0 17710037SARM gem5 Developers 0x0d, // PermissionL1 17810037SARM gem5 Developers 0x0e, // PermissionL2 17910037SARM gem5 Developers 0x0f, // PermissionL3 18010037SARM gem5 Developers 0xff, // DebugEvent (INVALID) 18110037SARM gem5 Developers 0x10, // SynchronousExternalAbort 18210037SARM gem5 Developers 0x30, // TLBConflictAbort 18310037SARM gem5 Developers 0x18, // SynchPtyErrOnMemoryAccess 18410037SARM gem5 Developers 0xff, // AsynchronousExternalAbort (INVALID) 18510037SARM gem5 Developers 0xff, // AsynchPtyErrOnMemoryAccess (INVALID) 18610037SARM gem5 Developers 0x00, // AddressSizeL0 18710037SARM gem5 Developers 0x01, // AddressSizeL1 18810037SARM gem5 Developers 0x02, // AddressSizeL2 18910037SARM gem5 Developers 0x03, // AddressSizeL3 19010037SARM gem5 Developers 0x40, // PrefetchTLBMiss 19110037SARM gem5 Developers 0x80 // PrefetchUncacheable 19210037SARM gem5 Developers}; 1936019Shines@cs.fsu.edu 19410037SARM gem5 Developersstatic_assert(sizeof(ArmFault::aarch64FaultSources) == 19510037SARM gem5 Developers ArmFault::NumFaultSources, 19610037SARM gem5 Developers "Invalid size of ArmFault::aarch64FaultSources[]"); 1976019Shines@cs.fsu.edu 19810037SARM gem5 Developers// Fields: name, offset, cur{ELT,ELH}Offset, lowerEL{64,32}Offset, next mode, 19910037SARM gem5 Developers// {ARM, Thumb, ARM_ELR, Thumb_ELR} PC offset, hyp trap, 20010037SARM gem5 Developers// {A, F} disable, class, stat 20110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<Reset>::vals = { 20210037SARM gem5 Developers // Some dummy values (the reset vector has an IMPLEMENTATION DEFINED 20310037SARM gem5 Developers // location in AArch64) 20410037SARM gem5 Developers "Reset", 0x000, 0x000, 0x000, 0x000, 0x000, MODE_SVC, 20510037SARM gem5 Developers 0, 0, 0, 0, false, true, true, EC_UNKNOWN, FaultStat() 20610037SARM gem5 Developers}; 20710037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<UndefinedInstruction>::vals = { 20810037SARM gem5 Developers "Undefined Instruction", 0x004, 0x000, 0x200, 0x400, 0x600, MODE_UNDEFINED, 20910037SARM gem5 Developers 4, 2, 0, 0, true, false, false, EC_UNKNOWN, FaultStat() 21010037SARM gem5 Developers}; 21110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SupervisorCall>::vals = { 21210037SARM gem5 Developers "Supervisor Call", 0x008, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 21310037SARM gem5 Developers 4, 2, 4, 2, true, false, false, EC_SVC_TO_HYP, FaultStat() 21410037SARM gem5 Developers}; 21510037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SecureMonitorCall>::vals = { 21610037SARM gem5 Developers "Secure Monitor Call", 0x008, 0x000, 0x200, 0x400, 0x600, MODE_MON, 21710037SARM gem5 Developers 4, 4, 4, 4, false, true, true, EC_SMC_TO_HYP, FaultStat() 21810037SARM gem5 Developers}; 21910037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<HypervisorCall>::vals = { 22010037SARM gem5 Developers "Hypervisor Call", 0x008, 0x000, 0x200, 0x400, 0x600, MODE_HYP, 22110037SARM gem5 Developers 4, 4, 4, 4, true, false, false, EC_HVC, FaultStat() 22210037SARM gem5 Developers}; 22310037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<PrefetchAbort>::vals = { 22410037SARM gem5 Developers "Prefetch Abort", 0x00C, 0x000, 0x200, 0x400, 0x600, MODE_ABORT, 22510037SARM gem5 Developers 4, 4, 0, 0, true, true, false, EC_PREFETCH_ABORT_TO_HYP, FaultStat() 22610037SARM gem5 Developers}; 22710037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<DataAbort>::vals = { 22810037SARM gem5 Developers "Data Abort", 0x010, 0x000, 0x200, 0x400, 0x600, MODE_ABORT, 22910037SARM gem5 Developers 8, 8, 0, 0, true, true, false, EC_DATA_ABORT_TO_HYP, FaultStat() 23010037SARM gem5 Developers}; 23110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<VirtualDataAbort>::vals = { 23210037SARM gem5 Developers "Virtual Data Abort", 0x010, 0x000, 0x200, 0x400, 0x600, MODE_ABORT, 23310037SARM gem5 Developers 8, 8, 0, 0, true, true, false, EC_INVALID, FaultStat() 23410037SARM gem5 Developers}; 23510037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<HypervisorTrap>::vals = { 23610037SARM gem5 Developers // @todo: double check these values 23710037SARM gem5 Developers "Hypervisor Trap", 0x014, 0x000, 0x200, 0x400, 0x600, MODE_HYP, 23810037SARM gem5 Developers 0, 0, 0, 0, false, false, false, EC_UNKNOWN, FaultStat() 23910037SARM gem5 Developers}; 24010037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<Interrupt>::vals = { 24110037SARM gem5 Developers "IRQ", 0x018, 0x080, 0x280, 0x480, 0x680, MODE_IRQ, 24210037SARM gem5 Developers 4, 4, 0, 0, false, true, false, EC_UNKNOWN, FaultStat() 24310037SARM gem5 Developers}; 24410037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<VirtualInterrupt>::vals = { 24510037SARM gem5 Developers "Virtual IRQ", 0x018, 0x080, 0x280, 0x480, 0x680, MODE_IRQ, 24610037SARM gem5 Developers 4, 4, 0, 0, false, true, false, EC_INVALID, FaultStat() 24710037SARM gem5 Developers}; 24810037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<FastInterrupt>::vals = { 24910037SARM gem5 Developers "FIQ", 0x01C, 0x100, 0x300, 0x500, 0x700, MODE_FIQ, 25010037SARM gem5 Developers 4, 4, 0, 0, false, true, true, EC_UNKNOWN, FaultStat() 25110037SARM gem5 Developers}; 25210037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<VirtualFastInterrupt>::vals = { 25310037SARM gem5 Developers "Virtual FIQ", 0x01C, 0x100, 0x300, 0x500, 0x700, MODE_FIQ, 25410037SARM gem5 Developers 4, 4, 0, 0, false, true, true, EC_INVALID, FaultStat() 25510037SARM gem5 Developers}; 25610037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SupervisorTrap>::vals = { 25710037SARM gem5 Developers // Some dummy values (SupervisorTrap is AArch64-only) 25810037SARM gem5 Developers "Supervisor Trap", 0x014, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 25910037SARM gem5 Developers 0, 0, 0, 0, false, false, false, EC_UNKNOWN, FaultStat() 26010037SARM gem5 Developers}; 26110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SecureMonitorTrap>::vals = { 26210037SARM gem5 Developers // Some dummy values (SecureMonitorTrap is AArch64-only) 26310037SARM gem5 Developers "Secure Monitor Trap", 0x014, 0x000, 0x200, 0x400, 0x600, MODE_MON, 26410037SARM gem5 Developers 0, 0, 0, 0, false, false, false, EC_UNKNOWN, FaultStat() 26510037SARM gem5 Developers}; 26610037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<PCAlignmentFault>::vals = { 26710037SARM gem5 Developers // Some dummy values (PCAlignmentFault is AArch64-only) 26810037SARM gem5 Developers "PC Alignment Fault", 0x000, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 26910037SARM gem5 Developers 0, 0, 0, 0, true, false, false, EC_PC_ALIGNMENT, FaultStat() 27010037SARM gem5 Developers}; 27110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SPAlignmentFault>::vals = { 27210037SARM gem5 Developers // Some dummy values (SPAlignmentFault is AArch64-only) 27310037SARM gem5 Developers "SP Alignment Fault", 0x000, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 27410037SARM gem5 Developers 0, 0, 0, 0, true, false, false, EC_STACK_PTR_ALIGNMENT, FaultStat() 27510037SARM gem5 Developers}; 27610037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<SystemError>::vals = { 27710037SARM gem5 Developers // Some dummy values (SError is AArch64-only) 27810037SARM gem5 Developers "SError", 0x000, 0x180, 0x380, 0x580, 0x780, MODE_SVC, 27910037SARM gem5 Developers 0, 0, 0, 0, false, true, true, EC_SERROR, FaultStat() 28010037SARM gem5 Developers}; 28112299Sandreas.sandberg@arm.comtemplate<> ArmFault::FaultVals ArmFaultVals<SoftwareBreakpoint>::vals = { 28212299Sandreas.sandberg@arm.com // Some dummy values (SoftwareBreakpoint is AArch64-only) 28312299Sandreas.sandberg@arm.com "Software Breakpoint", 0x000, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 28412299Sandreas.sandberg@arm.com 0, 0, 0, 0, true, false, false, EC_SOFTWARE_BREAKPOINT, FaultStat() 28512299Sandreas.sandberg@arm.com}; 28610037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<ArmSev>::vals = { 28710037SARM gem5 Developers // Some dummy values 28810037SARM gem5 Developers "ArmSev Flush", 0x000, 0x000, 0x000, 0x000, 0x000, MODE_SVC, 28910037SARM gem5 Developers 0, 0, 0, 0, false, true, true, EC_UNKNOWN, FaultStat() 29010037SARM gem5 Developers}; 29110037SARM gem5 Developerstemplate<> ArmFault::FaultVals ArmFaultVals<IllegalInstSetStateFault>::vals = { 29210037SARM gem5 Developers // Some dummy values (SPAlignmentFault is AArch64-only) 29310037SARM gem5 Developers "Illegal Inst Set State Fault", 0x000, 0x000, 0x200, 0x400, 0x600, MODE_SVC, 29410037SARM gem5 Developers 0, 0, 0, 0, true, false, false, EC_ILLEGAL_INST, FaultStat() 29510037SARM gem5 Developers}; 2966019Shines@cs.fsu.edu 29710037SARM gem5 DevelopersAddr 2987362Sgblack@eecs.umich.eduArmFault::getVector(ThreadContext *tc) 2996735Sgblack@eecs.umich.edu{ 30010037SARM gem5 Developers Addr base; 3016019Shines@cs.fsu.edu 30210037SARM gem5 Developers // ARM ARM issue C B1.8.1 30310037SARM gem5 Developers bool haveSecurity = ArmSystem::haveSecurity(tc); 3047400SAli.Saidi@ARM.com 3056735Sgblack@eecs.umich.edu // panic if SCTLR.VE because I have no idea what to do with vectored 3066735Sgblack@eecs.umich.edu // interrupts 30710037SARM gem5 Developers SCTLR sctlr = tc->readMiscReg(MISCREG_SCTLR); 3086735Sgblack@eecs.umich.edu assert(!sctlr.ve); 30910037SARM gem5 Developers // Check for invalid modes 31010037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 31110037SARM gem5 Developers assert(haveSecurity || cpsr.mode != MODE_MON); 31210037SARM gem5 Developers assert(ArmSystem::haveVirtualization(tc) || cpsr.mode != MODE_HYP); 3137400SAli.Saidi@ARM.com 31410037SARM gem5 Developers switch (cpsr.mode) 31510037SARM gem5 Developers { 31610037SARM gem5 Developers case MODE_MON: 31710037SARM gem5 Developers base = tc->readMiscReg(MISCREG_MVBAR); 31810037SARM gem5 Developers break; 31910037SARM gem5 Developers case MODE_HYP: 32010037SARM gem5 Developers base = tc->readMiscReg(MISCREG_HVBAR); 32110037SARM gem5 Developers break; 32210037SARM gem5 Developers default: 32310037SARM gem5 Developers if (sctlr.v) { 32410037SARM gem5 Developers base = HighVecs; 32510037SARM gem5 Developers } else { 32610037SARM gem5 Developers base = haveSecurity ? tc->readMiscReg(MISCREG_VBAR) : 0; 32710037SARM gem5 Developers } 32810037SARM gem5 Developers break; 32910037SARM gem5 Developers } 33010037SARM gem5 Developers return base + offset(tc); 3316019Shines@cs.fsu.edu} 3326019Shines@cs.fsu.edu 33310037SARM gem5 DevelopersAddr 33410037SARM gem5 DevelopersArmFault::getVector64(ThreadContext *tc) 33510037SARM gem5 Developers{ 33610037SARM gem5 Developers Addr vbar; 33710037SARM gem5 Developers switch (toEL) { 33810037SARM gem5 Developers case EL3: 33910037SARM gem5 Developers assert(ArmSystem::haveSecurity(tc)); 34010037SARM gem5 Developers vbar = tc->readMiscReg(MISCREG_VBAR_EL3); 34110037SARM gem5 Developers break; 34211574SCurtis.Dunham@arm.com case EL2: 34311574SCurtis.Dunham@arm.com assert(ArmSystem::haveVirtualization(tc)); 34411574SCurtis.Dunham@arm.com vbar = tc->readMiscReg(MISCREG_VBAR_EL2); 34511574SCurtis.Dunham@arm.com break; 34610037SARM gem5 Developers case EL1: 34710037SARM gem5 Developers vbar = tc->readMiscReg(MISCREG_VBAR_EL1); 34810037SARM gem5 Developers break; 34910037SARM gem5 Developers default: 35010037SARM gem5 Developers panic("Invalid target exception level"); 35110037SARM gem5 Developers break; 35210037SARM gem5 Developers } 35312511Schuan.zhu@arm.com return vbar + offset64(tc); 35410037SARM gem5 Developers} 35510037SARM gem5 Developers 35610037SARM gem5 DevelopersMiscRegIndex 35710037SARM gem5 DevelopersArmFault::getSyndromeReg64() const 35810037SARM gem5 Developers{ 35910037SARM gem5 Developers switch (toEL) { 36010037SARM gem5 Developers case EL1: 36110037SARM gem5 Developers return MISCREG_ESR_EL1; 36210037SARM gem5 Developers case EL2: 36310037SARM gem5 Developers return MISCREG_ESR_EL2; 36410037SARM gem5 Developers case EL3: 36510037SARM gem5 Developers return MISCREG_ESR_EL3; 36610037SARM gem5 Developers default: 36710037SARM gem5 Developers panic("Invalid exception level"); 36810037SARM gem5 Developers break; 36910037SARM gem5 Developers } 37010037SARM gem5 Developers} 37110037SARM gem5 Developers 37210037SARM gem5 DevelopersMiscRegIndex 37310037SARM gem5 DevelopersArmFault::getFaultAddrReg64() const 37410037SARM gem5 Developers{ 37510037SARM gem5 Developers switch (toEL) { 37610037SARM gem5 Developers case EL1: 37710037SARM gem5 Developers return MISCREG_FAR_EL1; 37810037SARM gem5 Developers case EL2: 37910037SARM gem5 Developers return MISCREG_FAR_EL2; 38010037SARM gem5 Developers case EL3: 38110037SARM gem5 Developers return MISCREG_FAR_EL3; 38210037SARM gem5 Developers default: 38310037SARM gem5 Developers panic("Invalid exception level"); 38410037SARM gem5 Developers break; 38510037SARM gem5 Developers } 38610037SARM gem5 Developers} 38710037SARM gem5 Developers 38810037SARM gem5 Developersvoid 38910037SARM gem5 DevelopersArmFault::setSyndrome(ThreadContext *tc, MiscRegIndex syndrome_reg) 39010037SARM gem5 Developers{ 39110037SARM gem5 Developers uint32_t value; 39210037SARM gem5 Developers uint32_t exc_class = (uint32_t) ec(tc); 39310037SARM gem5 Developers uint32_t issVal = iss(); 39412402Sgiacomo.travaglini@arm.com 39510037SARM gem5 Developers assert(!from64 || ArmSystem::highestELIs64(tc)); 39610037SARM gem5 Developers 39710037SARM gem5 Developers value = exc_class << 26; 39810037SARM gem5 Developers 39910037SARM gem5 Developers // HSR.IL not valid for Prefetch Aborts (0x20, 0x21) and Data Aborts (0x24, 40010037SARM gem5 Developers // 0x25) for which the ISS information is not valid (ARMv7). 40110037SARM gem5 Developers // @todo: ARMv8 revises AArch32 functionality: when HSR.IL is not 40210037SARM gem5 Developers // valid it is treated as RES1. 40310037SARM gem5 Developers if (to64) { 40410037SARM gem5 Developers value |= 1 << 25; 40510037SARM gem5 Developers } else if ((bits(exc_class, 5, 3) != 4) || 40610037SARM gem5 Developers (bits(exc_class, 2) && bits(issVal, 24))) { 40710037SARM gem5 Developers if (!machInst.thumb || machInst.bigThumb) 40810037SARM gem5 Developers value |= 1 << 25; 40910037SARM gem5 Developers } 41010037SARM gem5 Developers // Condition code valid for EC[5:4] nonzero 41110037SARM gem5 Developers if (!from64 && ((bits(exc_class, 5, 4) == 0) && 41210037SARM gem5 Developers (bits(exc_class, 3, 0) != 0))) { 41310037SARM gem5 Developers if (!machInst.thumb) { 41410037SARM gem5 Developers uint32_t cond; 41510037SARM gem5 Developers ConditionCode condCode = (ConditionCode) (uint32_t) machInst.condCode; 41610037SARM gem5 Developers // If its on unconditional instruction report with a cond code of 41710037SARM gem5 Developers // 0xE, ie the unconditional code 41810037SARM gem5 Developers cond = (condCode == COND_UC) ? COND_AL : condCode; 41910037SARM gem5 Developers value |= cond << 20; 42010037SARM gem5 Developers value |= 1 << 24; 42110037SARM gem5 Developers } 42210037SARM gem5 Developers value |= bits(issVal, 19, 0); 42310037SARM gem5 Developers } else { 42410037SARM gem5 Developers value |= issVal; 42510037SARM gem5 Developers } 42610037SARM gem5 Developers tc->setMiscReg(syndrome_reg, value); 42710037SARM gem5 Developers} 42810037SARM gem5 Developers 42910037SARM gem5 Developersvoid 43010417Sandreas.hansson@arm.comArmFault::invoke(ThreadContext *tc, const StaticInstPtr &inst) 4316019Shines@cs.fsu.edu{ 43210037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 43310037SARM gem5 Developers 43410037SARM gem5 Developers if (ArmSystem::highestELIs64(tc)) { // ARMv8 43510037SARM gem5 Developers // Determine source exception level and mode 43610037SARM gem5 Developers fromMode = (OperatingMode) (uint8_t) cpsr.mode; 43710037SARM gem5 Developers fromEL = opModeToEL(fromMode); 43810037SARM gem5 Developers if (opModeIs64(fromMode)) 43910037SARM gem5 Developers from64 = true; 44010037SARM gem5 Developers 44110037SARM gem5 Developers // Determine target exception level 44212402Sgiacomo.travaglini@arm.com if (ArmSystem::haveSecurity(tc) && routeToMonitor(tc)) { 44310037SARM gem5 Developers toEL = EL3; 44412402Sgiacomo.travaglini@arm.com } else if (ArmSystem::haveVirtualization(tc) && routeToHyp(tc)) { 44511578SDylan.Johnson@ARM.com toEL = EL2; 44612402Sgiacomo.travaglini@arm.com hypRouted = true; 44712402Sgiacomo.travaglini@arm.com } else { 44810037SARM gem5 Developers toEL = opModeToEL(nextMode()); 44912402Sgiacomo.travaglini@arm.com } 45012402Sgiacomo.travaglini@arm.com 45110037SARM gem5 Developers if (fromEL > toEL) 45210037SARM gem5 Developers toEL = fromEL; 45310037SARM gem5 Developers 45410037SARM gem5 Developers if (toEL == ArmSystem::highestEL(tc) || ELIs64(tc, toEL)) { 45510037SARM gem5 Developers // Invoke exception handler in AArch64 state 45610037SARM gem5 Developers to64 = true; 45710037SARM gem5 Developers invoke64(tc, inst); 45810037SARM gem5 Developers return; 45910037SARM gem5 Developers } 46010037SARM gem5 Developers } 46110037SARM gem5 Developers 46210037SARM gem5 Developers // ARMv7 (ARM ARM issue C B1.9) 46310037SARM gem5 Developers 46410037SARM gem5 Developers bool have_security = ArmSystem::haveSecurity(tc); 46510037SARM gem5 Developers bool have_virtualization = ArmSystem::haveVirtualization(tc); 46610037SARM gem5 Developers 4676735Sgblack@eecs.umich.edu FaultBase::invoke(tc); 4688782Sgblack@eecs.umich.edu if (!FullSystem) 4698782Sgblack@eecs.umich.edu return; 4706735Sgblack@eecs.umich.edu countStat()++; 4716019Shines@cs.fsu.edu 4726735Sgblack@eecs.umich.edu SCTLR sctlr = tc->readMiscReg(MISCREG_SCTLR); 47310037SARM gem5 Developers SCR scr = tc->readMiscReg(MISCREG_SCR); 4748303SAli.Saidi@ARM.com CPSR saved_cpsr = tc->readMiscReg(MISCREG_CPSR); 47510338SCurtis.Dunham@arm.com saved_cpsr.nz = tc->readCCReg(CCREG_NZ); 47610338SCurtis.Dunham@arm.com saved_cpsr.c = tc->readCCReg(CCREG_C); 47710338SCurtis.Dunham@arm.com saved_cpsr.v = tc->readCCReg(CCREG_V); 47810338SCurtis.Dunham@arm.com saved_cpsr.ge = tc->readCCReg(CCREG_GE); 4798303SAli.Saidi@ARM.com 4807720Sgblack@eecs.umich.edu Addr curPc M5_VAR_USED = tc->pcState().pc(); 4818205SAli.Saidi@ARM.com ITSTATE it = tc->pcState().itstate(); 4828205SAli.Saidi@ARM.com saved_cpsr.it2 = it.top6; 4838205SAli.Saidi@ARM.com saved_cpsr.it1 = it.bottom2; 4846735Sgblack@eecs.umich.edu 48510037SARM gem5 Developers // if we have a valid instruction then use it to annotate this fault with 48610037SARM gem5 Developers // extra information. This is used to generate the correct fault syndrome 48710037SARM gem5 Developers // information 48810037SARM gem5 Developers if (inst) { 48912398Sgiacomo.travaglini@arm.com ArmStaticInst *armInst = static_cast<ArmStaticInst *>(inst.get()); 49010037SARM gem5 Developers armInst->annotateFault(this); 49110037SARM gem5 Developers } 49210037SARM gem5 Developers 49312402Sgiacomo.travaglini@arm.com if (have_security && routeToMonitor(tc)) { 49410037SARM gem5 Developers cpsr.mode = MODE_MON; 49512402Sgiacomo.travaglini@arm.com } else if (have_virtualization && routeToHyp(tc)) { 49610037SARM gem5 Developers cpsr.mode = MODE_HYP; 49712402Sgiacomo.travaglini@arm.com hypRouted = true; 49812402Sgiacomo.travaglini@arm.com } else { 49910037SARM gem5 Developers cpsr.mode = nextMode(); 50012402Sgiacomo.travaglini@arm.com } 50110037SARM gem5 Developers 50210037SARM gem5 Developers // Ensure Secure state if initially in Monitor mode 50310037SARM gem5 Developers if (have_security && saved_cpsr.mode == MODE_MON) { 50410037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 50510037SARM gem5 Developers if (scr.ns) { 50610037SARM gem5 Developers scr.ns = 0; 50710037SARM gem5 Developers tc->setMiscRegNoEffect(MISCREG_SCR, scr); 50810037SARM gem5 Developers } 50910037SARM gem5 Developers } 51010037SARM gem5 Developers 51110037SARM gem5 Developers // some bits are set differently if we have been routed to hyp mode 51210037SARM gem5 Developers if (cpsr.mode == MODE_HYP) { 51310037SARM gem5 Developers SCTLR hsctlr = tc->readMiscReg(MISCREG_HSCTLR); 51410037SARM gem5 Developers cpsr.t = hsctlr.te; 51510037SARM gem5 Developers cpsr.e = hsctlr.ee; 51610037SARM gem5 Developers if (!scr.ea) {cpsr.a = 1;} 51710037SARM gem5 Developers if (!scr.fiq) {cpsr.f = 1;} 51810037SARM gem5 Developers if (!scr.irq) {cpsr.i = 1;} 51910037SARM gem5 Developers } else if (cpsr.mode == MODE_MON) { 52010037SARM gem5 Developers // Special case handling when entering monitor mode 52110037SARM gem5 Developers cpsr.t = sctlr.te; 52210037SARM gem5 Developers cpsr.e = sctlr.ee; 52310037SARM gem5 Developers cpsr.a = 1; 52410037SARM gem5 Developers cpsr.f = 1; 52510037SARM gem5 Developers cpsr.i = 1; 52610037SARM gem5 Developers } else { 52710037SARM gem5 Developers cpsr.t = sctlr.te; 52810037SARM gem5 Developers cpsr.e = sctlr.ee; 52910037SARM gem5 Developers 53010037SARM gem5 Developers // The *Disable functions are virtual and different per fault 53110037SARM gem5 Developers cpsr.a = cpsr.a | abortDisable(tc); 53210037SARM gem5 Developers cpsr.f = cpsr.f | fiqDisable(tc); 53310037SARM gem5 Developers cpsr.i = 1; 53410037SARM gem5 Developers } 5356735Sgblack@eecs.umich.edu cpsr.it1 = cpsr.it2 = 0; 5366735Sgblack@eecs.umich.edu cpsr.j = 0; 5376735Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_CPSR, cpsr); 53810037SARM gem5 Developers 5398518Sgeoffrey.blake@arm.com // Make sure mailbox sets to one always 5408518Sgeoffrey.blake@arm.com tc->setMiscReg(MISCREG_SEV_MAILBOX, 1); 5416735Sgblack@eecs.umich.edu 54210037SARM gem5 Developers // Clear the exclusive monitor 54310037SARM gem5 Developers tc->setMiscReg(MISCREG_LOCKFLAG, 0); 54410037SARM gem5 Developers 54510037SARM gem5 Developers if (cpsr.mode == MODE_HYP) { 54610037SARM gem5 Developers tc->setMiscReg(MISCREG_ELR_HYP, curPc + 54710037SARM gem5 Developers (saved_cpsr.t ? thumbPcOffset(true) : armPcOffset(true))); 54810037SARM gem5 Developers } else { 54910037SARM gem5 Developers tc->setIntReg(INTREG_LR, curPc + 55010037SARM gem5 Developers (saved_cpsr.t ? thumbPcOffset(false) : armPcOffset(false))); 55110037SARM gem5 Developers } 55210037SARM gem5 Developers 55310037SARM gem5 Developers switch (cpsr.mode) { 5546735Sgblack@eecs.umich.edu case MODE_FIQ: 5556735Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_SPSR_FIQ, saved_cpsr); 5566735Sgblack@eecs.umich.edu break; 5576735Sgblack@eecs.umich.edu case MODE_IRQ: 5586735Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_SPSR_IRQ, saved_cpsr); 5596735Sgblack@eecs.umich.edu break; 5606735Sgblack@eecs.umich.edu case MODE_SVC: 5616735Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_SPSR_SVC, saved_cpsr); 5626735Sgblack@eecs.umich.edu break; 56310037SARM gem5 Developers case MODE_MON: 56410037SARM gem5 Developers assert(have_security); 56510037SARM gem5 Developers tc->setMiscReg(MISCREG_SPSR_MON, saved_cpsr); 5666735Sgblack@eecs.umich.edu break; 5676735Sgblack@eecs.umich.edu case MODE_ABORT: 5686735Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_SPSR_ABT, saved_cpsr); 5696735Sgblack@eecs.umich.edu break; 57010037SARM gem5 Developers case MODE_UNDEFINED: 57110037SARM gem5 Developers tc->setMiscReg(MISCREG_SPSR_UND, saved_cpsr); 57210037SARM gem5 Developers if (ec(tc) != EC_UNKNOWN) 57310037SARM gem5 Developers setSyndrome(tc, MISCREG_HSR); 57410037SARM gem5 Developers break; 57510037SARM gem5 Developers case MODE_HYP: 57610037SARM gem5 Developers assert(have_virtualization); 57710037SARM gem5 Developers tc->setMiscReg(MISCREG_SPSR_HYP, saved_cpsr); 57810037SARM gem5 Developers setSyndrome(tc, MISCREG_HSR); 57910037SARM gem5 Developers break; 5806735Sgblack@eecs.umich.edu default: 5816735Sgblack@eecs.umich.edu panic("unknown Mode\n"); 5827093Sgblack@eecs.umich.edu } 5837093Sgblack@eecs.umich.edu 5847720Sgblack@eecs.umich.edu Addr newPc = getVector(tc); 5857585SAli.Saidi@arm.com DPRINTF(Faults, "Invoking Fault:%s cpsr:%#x PC:%#x lr:%#x newVec: %#x\n", 5867720Sgblack@eecs.umich.edu name(), cpsr, curPc, tc->readIntReg(INTREG_LR), newPc); 5877720Sgblack@eecs.umich.edu PCState pc(newPc); 5887720Sgblack@eecs.umich.edu pc.thumb(cpsr.t); 5897720Sgblack@eecs.umich.edu pc.nextThumb(pc.thumb()); 5907720Sgblack@eecs.umich.edu pc.jazelle(cpsr.j); 5917720Sgblack@eecs.umich.edu pc.nextJazelle(pc.jazelle()); 59210037SARM gem5 Developers pc.aarch64(!cpsr.width); 59310037SARM gem5 Developers pc.nextAArch64(!cpsr.width); 5947720Sgblack@eecs.umich.edu tc->pcState(pc); 5956019Shines@cs.fsu.edu} 5967189Sgblack@eecs.umich.edu 5977400SAli.Saidi@ARM.comvoid 59810417Sandreas.hansson@arm.comArmFault::invoke64(ThreadContext *tc, const StaticInstPtr &inst) 59910037SARM gem5 Developers{ 60010037SARM gem5 Developers // Determine actual misc. register indices for ELR_ELx and SPSR_ELx 60110037SARM gem5 Developers MiscRegIndex elr_idx, spsr_idx; 60210037SARM gem5 Developers switch (toEL) { 60310037SARM gem5 Developers case EL1: 60410037SARM gem5 Developers elr_idx = MISCREG_ELR_EL1; 60510037SARM gem5 Developers spsr_idx = MISCREG_SPSR_EL1; 60610037SARM gem5 Developers break; 60711574SCurtis.Dunham@arm.com case EL2: 60811574SCurtis.Dunham@arm.com assert(ArmSystem::haveVirtualization(tc)); 60911574SCurtis.Dunham@arm.com elr_idx = MISCREG_ELR_EL2; 61011574SCurtis.Dunham@arm.com spsr_idx = MISCREG_SPSR_EL2; 61111574SCurtis.Dunham@arm.com break; 61210037SARM gem5 Developers case EL3: 61310037SARM gem5 Developers assert(ArmSystem::haveSecurity(tc)); 61410037SARM gem5 Developers elr_idx = MISCREG_ELR_EL3; 61510037SARM gem5 Developers spsr_idx = MISCREG_SPSR_EL3; 61610037SARM gem5 Developers break; 61710037SARM gem5 Developers default: 61810037SARM gem5 Developers panic("Invalid target exception level"); 61910037SARM gem5 Developers break; 62010037SARM gem5 Developers } 62110037SARM gem5 Developers 62210037SARM gem5 Developers // Save process state into SPSR_ELx 62310037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 62410037SARM gem5 Developers CPSR spsr = cpsr; 62510338SCurtis.Dunham@arm.com spsr.nz = tc->readCCReg(CCREG_NZ); 62610338SCurtis.Dunham@arm.com spsr.c = tc->readCCReg(CCREG_C); 62710338SCurtis.Dunham@arm.com spsr.v = tc->readCCReg(CCREG_V); 62810037SARM gem5 Developers if (from64) { 62910037SARM gem5 Developers // Force some bitfields to 0 63010037SARM gem5 Developers spsr.q = 0; 63110037SARM gem5 Developers spsr.it1 = 0; 63210037SARM gem5 Developers spsr.j = 0; 63310037SARM gem5 Developers spsr.res0_23_22 = 0; 63410037SARM gem5 Developers spsr.ge = 0; 63510037SARM gem5 Developers spsr.it2 = 0; 63610037SARM gem5 Developers spsr.t = 0; 63710037SARM gem5 Developers } else { 63810338SCurtis.Dunham@arm.com spsr.ge = tc->readCCReg(CCREG_GE); 63910037SARM gem5 Developers ITSTATE it = tc->pcState().itstate(); 64010037SARM gem5 Developers spsr.it2 = it.top6; 64110037SARM gem5 Developers spsr.it1 = it.bottom2; 64210037SARM gem5 Developers // Force some bitfields to 0 64310037SARM gem5 Developers spsr.res0_23_22 = 0; 64410037SARM gem5 Developers spsr.ss = 0; 64510037SARM gem5 Developers } 64610037SARM gem5 Developers tc->setMiscReg(spsr_idx, spsr); 64710037SARM gem5 Developers 64810037SARM gem5 Developers // Save preferred return address into ELR_ELx 64910037SARM gem5 Developers Addr curr_pc = tc->pcState().pc(); 65010037SARM gem5 Developers Addr ret_addr = curr_pc; 65110037SARM gem5 Developers if (from64) 65210037SARM gem5 Developers ret_addr += armPcElrOffset(); 65310037SARM gem5 Developers else 65410037SARM gem5 Developers ret_addr += spsr.t ? thumbPcElrOffset() : armPcElrOffset(); 65510037SARM gem5 Developers tc->setMiscReg(elr_idx, ret_addr); 65610037SARM gem5 Developers 65712511Schuan.zhu@arm.com Addr vec_address = getVector64(tc); 65812511Schuan.zhu@arm.com 65910037SARM gem5 Developers // Update process state 66010037SARM gem5 Developers OperatingMode64 mode = 0; 66110037SARM gem5 Developers mode.spX = 1; 66210037SARM gem5 Developers mode.el = toEL; 66310037SARM gem5 Developers mode.width = 0; 66410037SARM gem5 Developers cpsr.mode = mode; 66510037SARM gem5 Developers cpsr.daif = 0xf; 66610037SARM gem5 Developers cpsr.il = 0; 66710037SARM gem5 Developers cpsr.ss = 0; 66810037SARM gem5 Developers tc->setMiscReg(MISCREG_CPSR, cpsr); 66910037SARM gem5 Developers 67010037SARM gem5 Developers // Set PC to start of exception handler 67112511Schuan.zhu@arm.com Addr new_pc = purifyTaggedAddr(vec_address, tc, toEL); 67210037SARM gem5 Developers DPRINTF(Faults, "Invoking Fault (AArch64 target EL):%s cpsr:%#x PC:%#x " 67310037SARM gem5 Developers "elr:%#x newVec: %#x\n", name(), cpsr, curr_pc, ret_addr, new_pc); 67410037SARM gem5 Developers PCState pc(new_pc); 67510037SARM gem5 Developers pc.aarch64(!cpsr.width); 67610037SARM gem5 Developers pc.nextAArch64(!cpsr.width); 67710037SARM gem5 Developers tc->pcState(pc); 67810037SARM gem5 Developers 67910037SARM gem5 Developers // If we have a valid instruction then use it to annotate this fault with 68010037SARM gem5 Developers // extra information. This is used to generate the correct fault syndrome 68110037SARM gem5 Developers // information 68210037SARM gem5 Developers if (inst) 68312398Sgiacomo.travaglini@arm.com static_cast<ArmStaticInst *>(inst.get())->annotateFault(this); 68410037SARM gem5 Developers // Save exception syndrome 68510037SARM gem5 Developers if ((nextMode() != MODE_IRQ) && (nextMode() != MODE_FIQ)) 68610037SARM gem5 Developers setSyndrome(tc, getSyndromeReg64()); 68710037SARM gem5 Developers} 68810037SARM gem5 Developers 68910037SARM gem5 Developersvoid 69010417Sandreas.hansson@arm.comReset::invoke(ThreadContext *tc, const StaticInstPtr &inst) 6917400SAli.Saidi@ARM.com{ 6928782Sgblack@eecs.umich.edu if (FullSystem) { 69311150Smitch.hayenga@arm.com tc->getCpuPtr()->clearInterrupts(tc->threadId()); 6948782Sgblack@eecs.umich.edu tc->clearArchRegs(); 6958782Sgblack@eecs.umich.edu } 69610037SARM gem5 Developers if (!ArmSystem::highestELIs64(tc)) { 69710037SARM gem5 Developers ArmFault::invoke(tc, inst); 69810037SARM gem5 Developers tc->setMiscReg(MISCREG_VMPIDR, 69910037SARM gem5 Developers getMPIDR(dynamic_cast<ArmSystem*>(tc->getSystemPtr()), tc)); 70010037SARM gem5 Developers 70110037SARM gem5 Developers // Unless we have SMC code to get us there, boot in HYP! 70210037SARM gem5 Developers if (ArmSystem::haveVirtualization(tc) && 70310037SARM gem5 Developers !ArmSystem::haveSecurity(tc)) { 70410037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 70510037SARM gem5 Developers cpsr.mode = MODE_HYP; 70610037SARM gem5 Developers tc->setMiscReg(MISCREG_CPSR, cpsr); 70710037SARM gem5 Developers } 70810037SARM gem5 Developers } else { 70910037SARM gem5 Developers // Advance the PC to the IMPLEMENTATION DEFINED reset value 71010037SARM gem5 Developers PCState pc = ArmSystem::resetAddr64(tc); 71110037SARM gem5 Developers pc.aarch64(true); 71210037SARM gem5 Developers pc.nextAArch64(true); 71310037SARM gem5 Developers tc->pcState(pc); 71410037SARM gem5 Developers } 7157400SAli.Saidi@ARM.com} 7167400SAli.Saidi@ARM.com 7177189Sgblack@eecs.umich.eduvoid 71810417Sandreas.hansson@arm.comUndefinedInstruction::invoke(ThreadContext *tc, const StaticInstPtr &inst) 7197189Sgblack@eecs.umich.edu{ 7208782Sgblack@eecs.umich.edu if (FullSystem) { 7218782Sgblack@eecs.umich.edu ArmFault::invoke(tc, inst); 7228806Sgblack@eecs.umich.edu return; 7238806Sgblack@eecs.umich.edu } 7248806Sgblack@eecs.umich.edu 7258806Sgblack@eecs.umich.edu // If the mnemonic isn't defined this has to be an unknown instruction. 7268806Sgblack@eecs.umich.edu assert(unknown || mnemonic != NULL); 7278806Sgblack@eecs.umich.edu if (disabled) { 7288806Sgblack@eecs.umich.edu panic("Attempted to execute disabled instruction " 7298806Sgblack@eecs.umich.edu "'%s' (inst 0x%08x)", mnemonic, machInst); 7308806Sgblack@eecs.umich.edu } else if (unknown) { 7318806Sgblack@eecs.umich.edu panic("Attempted to execute unknown instruction (inst 0x%08x)", 7328806Sgblack@eecs.umich.edu machInst); 7337189Sgblack@eecs.umich.edu } else { 7348806Sgblack@eecs.umich.edu panic("Attempted to execute unimplemented instruction " 7358806Sgblack@eecs.umich.edu "'%s' (inst 0x%08x)", mnemonic, machInst); 7367189Sgblack@eecs.umich.edu } 7377189Sgblack@eecs.umich.edu} 7387189Sgblack@eecs.umich.edu 73910037SARM gem5 Developersbool 74010037SARM gem5 DevelopersUndefinedInstruction::routeToHyp(ThreadContext *tc) const 74110037SARM gem5 Developers{ 74210037SARM gem5 Developers bool toHyp; 74310037SARM gem5 Developers 74410037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 74510037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 74610037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 74710037SARM gem5 Developers 74810037SARM gem5 Developers // if in Hyp mode then stay in Hyp mode 74910037SARM gem5 Developers toHyp = scr.ns && (cpsr.mode == MODE_HYP); 75010037SARM gem5 Developers // if HCR.TGE is set to 1, take to Hyp mode through Hyp Trap vector 75110037SARM gem5 Developers toHyp |= !inSecureState(scr, cpsr) && hcr.tge && (cpsr.mode == MODE_USER); 75210037SARM gem5 Developers return toHyp; 75310037SARM gem5 Developers} 75410037SARM gem5 Developers 75510037SARM gem5 Developersuint32_t 75610037SARM gem5 DevelopersUndefinedInstruction::iss() const 75710037SARM gem5 Developers{ 75812402Sgiacomo.travaglini@arm.com 75912402Sgiacomo.travaglini@arm.com // If UndefinedInstruction is routed to hypervisor, iss field is 0. 76012402Sgiacomo.travaglini@arm.com if (hypRouted) { 76112402Sgiacomo.travaglini@arm.com return 0; 76212402Sgiacomo.travaglini@arm.com } 76312402Sgiacomo.travaglini@arm.com 76410037SARM gem5 Developers if (overrideEc == EC_INVALID) 76510037SARM gem5 Developers return issRaw; 76610037SARM gem5 Developers 76710037SARM gem5 Developers uint32_t new_iss = 0; 76810037SARM gem5 Developers uint32_t op0, op1, op2, CRn, CRm, Rt, dir; 76910037SARM gem5 Developers 77010037SARM gem5 Developers dir = bits(machInst, 21, 21); 77110037SARM gem5 Developers op0 = bits(machInst, 20, 19); 77210037SARM gem5 Developers op1 = bits(machInst, 18, 16); 77310037SARM gem5 Developers CRn = bits(machInst, 15, 12); 77410037SARM gem5 Developers CRm = bits(machInst, 11, 8); 77510037SARM gem5 Developers op2 = bits(machInst, 7, 5); 77610037SARM gem5 Developers Rt = bits(machInst, 4, 0); 77710037SARM gem5 Developers 77810037SARM gem5 Developers new_iss = op0 << 20 | op2 << 17 | op1 << 14 | CRn << 10 | 77910037SARM gem5 Developers Rt << 5 | CRm << 1 | dir; 78010037SARM gem5 Developers 78110037SARM gem5 Developers return new_iss; 78210037SARM gem5 Developers} 78310037SARM gem5 Developers 7847197Sgblack@eecs.umich.eduvoid 78510417Sandreas.hansson@arm.comSupervisorCall::invoke(ThreadContext *tc, const StaticInstPtr &inst) 7867197Sgblack@eecs.umich.edu{ 7878782Sgblack@eecs.umich.edu if (FullSystem) { 7888782Sgblack@eecs.umich.edu ArmFault::invoke(tc, inst); 7898806Sgblack@eecs.umich.edu return; 7908806Sgblack@eecs.umich.edu } 7917197Sgblack@eecs.umich.edu 7928806Sgblack@eecs.umich.edu // As of now, there isn't a 32 bit thumb version of this instruction. 7938806Sgblack@eecs.umich.edu assert(!machInst.bigThumb); 7948806Sgblack@eecs.umich.edu uint32_t callNum; 79510037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 79610037SARM gem5 Developers OperatingMode mode = (OperatingMode)(uint8_t)cpsr.mode; 79710037SARM gem5 Developers if (opModeIs64(mode)) 79810037SARM gem5 Developers callNum = tc->readIntReg(INTREG_X8); 79910037SARM gem5 Developers else 80010037SARM gem5 Developers callNum = tc->readIntReg(INTREG_R7); 80111877Sbrandon.potter@amd.com Fault fault; 80211877Sbrandon.potter@amd.com tc->syscall(callNum, &fault); 8038806Sgblack@eecs.umich.edu 8048806Sgblack@eecs.umich.edu // Advance the PC since that won't happen automatically. 8058806Sgblack@eecs.umich.edu PCState pc = tc->pcState(); 8068806Sgblack@eecs.umich.edu assert(inst); 8078806Sgblack@eecs.umich.edu inst->advancePC(pc); 8088806Sgblack@eecs.umich.edu tc->pcState(pc); 8097197Sgblack@eecs.umich.edu} 8107197Sgblack@eecs.umich.edu 81110037SARM gem5 Developersbool 81210037SARM gem5 DevelopersSupervisorCall::routeToHyp(ThreadContext *tc) const 81310037SARM gem5 Developers{ 81410037SARM gem5 Developers bool toHyp; 81510037SARM gem5 Developers 81610037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 81710037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 81810037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 81910037SARM gem5 Developers 82010037SARM gem5 Developers // if in Hyp mode then stay in Hyp mode 82110037SARM gem5 Developers toHyp = scr.ns && (cpsr.mode == MODE_HYP); 82210037SARM gem5 Developers // if HCR.TGE is set to 1, take to Hyp mode through Hyp Trap vector 82310037SARM gem5 Developers toHyp |= !inSecureState(scr, cpsr) && hcr.tge && (cpsr.mode == MODE_USER); 82410037SARM gem5 Developers return toHyp; 82510037SARM gem5 Developers} 82610037SARM gem5 Developers 82710037SARM gem5 DevelopersExceptionClass 82810037SARM gem5 DevelopersSupervisorCall::ec(ThreadContext *tc) const 82910037SARM gem5 Developers{ 83010037SARM gem5 Developers return (overrideEc != EC_INVALID) ? overrideEc : 83110037SARM gem5 Developers (from64 ? EC_SVC_64 : vals.ec); 83210037SARM gem5 Developers} 83310037SARM gem5 Developers 83410037SARM gem5 Developersuint32_t 83510037SARM gem5 DevelopersSupervisorCall::iss() const 83610037SARM gem5 Developers{ 83710037SARM gem5 Developers // Even if we have a 24 bit imm from an arm32 instruction then we only use 83810037SARM gem5 Developers // the bottom 16 bits for the ISS value (it doesn't hurt for AArch64 SVC). 83910037SARM gem5 Developers return issRaw & 0xFFFF; 84010037SARM gem5 Developers} 84110037SARM gem5 Developers 84210037SARM gem5 Developersuint32_t 84310037SARM gem5 DevelopersSecureMonitorCall::iss() const 84410037SARM gem5 Developers{ 84510037SARM gem5 Developers if (from64) 84610037SARM gem5 Developers return bits(machInst, 20, 5); 84710037SARM gem5 Developers return 0; 84810037SARM gem5 Developers} 84910037SARM gem5 Developers 85010037SARM gem5 DevelopersExceptionClass 85110037SARM gem5 DevelopersUndefinedInstruction::ec(ThreadContext *tc) const 85210037SARM gem5 Developers{ 85312402Sgiacomo.travaglini@arm.com // If UndefinedInstruction is routed to hypervisor, 85412402Sgiacomo.travaglini@arm.com // HSR.EC field is 0. 85512402Sgiacomo.travaglini@arm.com if (hypRouted) 85612402Sgiacomo.travaglini@arm.com return EC_UNKNOWN; 85712402Sgiacomo.travaglini@arm.com else 85812402Sgiacomo.travaglini@arm.com return (overrideEc != EC_INVALID) ? overrideEc : vals.ec; 85910037SARM gem5 Developers} 86010037SARM gem5 Developers 86110037SARM gem5 Developers 86210037SARM gem5 DevelopersHypervisorCall::HypervisorCall(ExtMachInst _machInst, uint32_t _imm) : 86310037SARM gem5 Developers ArmFaultVals<HypervisorCall>(_machInst, _imm) 86410037SARM gem5 Developers{} 86510037SARM gem5 Developers 86610037SARM gem5 DevelopersExceptionClass 86711576SDylan.Johnson@ARM.comHypervisorCall::ec(ThreadContext *tc) const 86811576SDylan.Johnson@ARM.com{ 86911576SDylan.Johnson@ARM.com return from64 ? EC_HVC_64 : vals.ec; 87011576SDylan.Johnson@ARM.com} 87111576SDylan.Johnson@ARM.com 87211576SDylan.Johnson@ARM.comExceptionClass 87310037SARM gem5 DevelopersHypervisorTrap::ec(ThreadContext *tc) const 87410037SARM gem5 Developers{ 87510037SARM gem5 Developers return (overrideEc != EC_INVALID) ? overrideEc : vals.ec; 87610037SARM gem5 Developers} 87710037SARM gem5 Developers 87810037SARM gem5 Developerstemplate<class T> 87910037SARM gem5 DevelopersFaultOffset 88010037SARM gem5 DevelopersArmFaultVals<T>::offset(ThreadContext *tc) 88110037SARM gem5 Developers{ 88210037SARM gem5 Developers bool isHypTrap = false; 88310037SARM gem5 Developers 88410037SARM gem5 Developers // Normally we just use the exception vector from the table at the top if 88510037SARM gem5 Developers // this file, however if this exception has caused a transition to hype 88610037SARM gem5 Developers // mode, and its an exception type that would only do this if it has been 88710037SARM gem5 Developers // trapped then we use the hyp trap vector instead of the normal vector 88810037SARM gem5 Developers if (vals.hypTrappable) { 88910037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 89010037SARM gem5 Developers if (cpsr.mode == MODE_HYP) { 89110037SARM gem5 Developers CPSR spsr = tc->readMiscReg(MISCREG_SPSR_HYP); 89210037SARM gem5 Developers isHypTrap = spsr.mode != MODE_HYP; 89310037SARM gem5 Developers } 89410037SARM gem5 Developers } 89510037SARM gem5 Developers return isHypTrap ? 0x14 : vals.offset; 89610037SARM gem5 Developers} 89710037SARM gem5 Developers 89812511Schuan.zhu@arm.comtemplate<class T> 89912511Schuan.zhu@arm.comFaultOffset 90012511Schuan.zhu@arm.comArmFaultVals<T>::offset64(ThreadContext *tc) 90112511Schuan.zhu@arm.com{ 90212511Schuan.zhu@arm.com if (toEL == fromEL) { 90312511Schuan.zhu@arm.com if (opModeIsT(fromMode)) 90412511Schuan.zhu@arm.com return vals.currELTOffset; 90512511Schuan.zhu@arm.com return vals.currELHOffset; 90612511Schuan.zhu@arm.com } else { 90712511Schuan.zhu@arm.com bool lower_32 = false; 90812511Schuan.zhu@arm.com if (toEL == EL3) { 90912511Schuan.zhu@arm.com if (!inSecureState(tc) && ArmSystem::haveEL(tc, EL2)) 91012511Schuan.zhu@arm.com lower_32 = ELIs32(tc, EL2); 91112511Schuan.zhu@arm.com else 91212511Schuan.zhu@arm.com lower_32 = ELIs32(tc, EL1); 91312511Schuan.zhu@arm.com } else { 91412511Schuan.zhu@arm.com lower_32 = ELIs32(tc, static_cast<ExceptionLevel>(toEL - 1)); 91512511Schuan.zhu@arm.com } 91612511Schuan.zhu@arm.com 91712511Schuan.zhu@arm.com if (lower_32) 91812511Schuan.zhu@arm.com return vals.lowerEL32Offset; 91912511Schuan.zhu@arm.com return vals.lowerEL64Offset; 92012511Schuan.zhu@arm.com } 92112511Schuan.zhu@arm.com} 92212511Schuan.zhu@arm.com 92310037SARM gem5 Developers// void 92410037SARM gem5 Developers// SupervisorCall::setSyndrome64(ThreadContext *tc, MiscRegIndex esr_idx) 92510037SARM gem5 Developers// { 92610037SARM gem5 Developers// ESR esr = 0; 92710037SARM gem5 Developers// esr.ec = machInst.aarch64 ? SvcAArch64 : SvcAArch32; 92810037SARM gem5 Developers// esr.il = !machInst.thumb; 92910037SARM gem5 Developers// if (machInst.aarch64) 93010037SARM gem5 Developers// esr.imm16 = bits(machInst.instBits, 20, 5); 93110037SARM gem5 Developers// else if (machInst.thumb) 93210037SARM gem5 Developers// esr.imm16 = bits(machInst.instBits, 7, 0); 93310037SARM gem5 Developers// else 93410037SARM gem5 Developers// esr.imm16 = bits(machInst.instBits, 15, 0); 93510037SARM gem5 Developers// tc->setMiscReg(esr_idx, esr); 93610037SARM gem5 Developers// } 93710037SARM gem5 Developers 93810037SARM gem5 Developersvoid 93910417Sandreas.hansson@arm.comSecureMonitorCall::invoke(ThreadContext *tc, const StaticInstPtr &inst) 94010037SARM gem5 Developers{ 94110037SARM gem5 Developers if (FullSystem) { 94210037SARM gem5 Developers ArmFault::invoke(tc, inst); 94310037SARM gem5 Developers return; 94410037SARM gem5 Developers } 94510037SARM gem5 Developers} 94610037SARM gem5 Developers 94710037SARM gem5 DevelopersExceptionClass 94810037SARM gem5 DevelopersSecureMonitorCall::ec(ThreadContext *tc) const 94910037SARM gem5 Developers{ 95010037SARM gem5 Developers return (from64 ? EC_SMC_64 : vals.ec); 95110037SARM gem5 Developers} 95210037SARM gem5 Developers 95312509Schuan.zhu@arm.combool 95412509Schuan.zhu@arm.comSupervisorTrap::routeToHyp(ThreadContext *tc) const 95512509Schuan.zhu@arm.com{ 95612509Schuan.zhu@arm.com bool toHyp = false; 95712509Schuan.zhu@arm.com 95812509Schuan.zhu@arm.com SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 95912509Schuan.zhu@arm.com HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR_EL2); 96012509Schuan.zhu@arm.com CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 96112509Schuan.zhu@arm.com 96212509Schuan.zhu@arm.com // if HCR.TGE is set to 1, take to Hyp mode through Hyp Trap vector 96312509Schuan.zhu@arm.com toHyp |= !inSecureState(scr, cpsr) && hcr.tge && (cpsr.el == EL0); 96412509Schuan.zhu@arm.com return toHyp; 96512509Schuan.zhu@arm.com} 96612509Schuan.zhu@arm.com 96712509Schuan.zhu@arm.comuint32_t 96812509Schuan.zhu@arm.comSupervisorTrap::iss() const 96912509Schuan.zhu@arm.com{ 97012509Schuan.zhu@arm.com // If SupervisorTrap is routed to hypervisor, iss field is 0. 97112509Schuan.zhu@arm.com if (hypRouted) { 97212509Schuan.zhu@arm.com return 0; 97312509Schuan.zhu@arm.com } 97412509Schuan.zhu@arm.com return issRaw; 97512509Schuan.zhu@arm.com} 97612509Schuan.zhu@arm.com 97710037SARM gem5 DevelopersExceptionClass 97810037SARM gem5 DevelopersSupervisorTrap::ec(ThreadContext *tc) const 97910037SARM gem5 Developers{ 98012509Schuan.zhu@arm.com if (hypRouted) 98112509Schuan.zhu@arm.com return EC_UNKNOWN; 98212509Schuan.zhu@arm.com else 98312509Schuan.zhu@arm.com return (overrideEc != EC_INVALID) ? overrideEc : vals.ec; 98410037SARM gem5 Developers} 98510037SARM gem5 Developers 98610037SARM gem5 DevelopersExceptionClass 98710037SARM gem5 DevelopersSecureMonitorTrap::ec(ThreadContext *tc) const 98810037SARM gem5 Developers{ 98910037SARM gem5 Developers return (overrideEc != EC_INVALID) ? overrideEc : 99010037SARM gem5 Developers (from64 ? EC_SMC_64 : vals.ec); 99110037SARM gem5 Developers} 99210037SARM gem5 Developers 9937362Sgblack@eecs.umich.edutemplate<class T> 9947362Sgblack@eecs.umich.eduvoid 99510417Sandreas.hansson@arm.comAbortFault<T>::invoke(ThreadContext *tc, const StaticInstPtr &inst) 9967362Sgblack@eecs.umich.edu{ 99710037SARM gem5 Developers if (tranMethod == ArmFault::UnknownTran) { 99810037SARM gem5 Developers tranMethod = longDescFormatInUse(tc) ? ArmFault::LpaeTran 99910037SARM gem5 Developers : ArmFault::VmsaTran; 100010037SARM gem5 Developers 100110037SARM gem5 Developers if ((tranMethod == ArmFault::VmsaTran) && this->routeToMonitor(tc)) { 100210037SARM gem5 Developers // See ARM ARM B3-1416 100310037SARM gem5 Developers bool override_LPAE = false; 100410037SARM gem5 Developers TTBCR ttbcr_s = tc->readMiscReg(MISCREG_TTBCR_S); 100510037SARM gem5 Developers TTBCR M5_VAR_USED ttbcr_ns = tc->readMiscReg(MISCREG_TTBCR_NS); 100610037SARM gem5 Developers if (ttbcr_s.eae) { 100710037SARM gem5 Developers override_LPAE = true; 100810037SARM gem5 Developers } else { 100910037SARM gem5 Developers // Unimplemented code option, not seen in testing. May need 101010037SARM gem5 Developers // extension according to the manual exceprt above. 101110037SARM gem5 Developers DPRINTF(Faults, "Warning: Incomplete translation method " 101210037SARM gem5 Developers "override detected.\n"); 101310037SARM gem5 Developers } 101410037SARM gem5 Developers if (override_LPAE) 101510037SARM gem5 Developers tranMethod = ArmFault::LpaeTran; 101610037SARM gem5 Developers } 101710037SARM gem5 Developers } 101810037SARM gem5 Developers 101910037SARM gem5 Developers if (source == ArmFault::AsynchronousExternalAbort) { 102011150Smitch.hayenga@arm.com tc->getCpuPtr()->clearInterrupt(tc->threadId(), INT_ABT, 0); 102110037SARM gem5 Developers } 102210037SARM gem5 Developers // Get effective fault source encoding 102310037SARM gem5 Developers CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); 102410037SARM gem5 Developers FSR fsr = getFsr(tc); 102510037SARM gem5 Developers 102610037SARM gem5 Developers // source must be determined BEFORE invoking generic routines which will 102710037SARM gem5 Developers // try to set hsr etc. and are based upon source! 10288205SAli.Saidi@ARM.com ArmFaultVals<T>::invoke(tc, inst); 102910037SARM gem5 Developers 103011496Sandreas.sandberg@arm.com if (!this->to64) { // AArch32 103110037SARM gem5 Developers if (cpsr.mode == MODE_HYP) { 103210037SARM gem5 Developers tc->setMiscReg(T::HFarIndex, faultAddr); 103310037SARM gem5 Developers } else if (stage2) { 103410037SARM gem5 Developers tc->setMiscReg(MISCREG_HPFAR, (faultAddr >> 8) & ~0xf); 103510037SARM gem5 Developers tc->setMiscReg(T::HFarIndex, OVAddr); 103610037SARM gem5 Developers } else { 103710037SARM gem5 Developers tc->setMiscReg(T::FsrIndex, fsr); 103810037SARM gem5 Developers tc->setMiscReg(T::FarIndex, faultAddr); 103910037SARM gem5 Developers } 104010037SARM gem5 Developers DPRINTF(Faults, "Abort Fault source=%#x fsr=%#x faultAddr=%#x "\ 104110037SARM gem5 Developers "tranMethod=%#x\n", source, fsr, faultAddr, tranMethod); 104210037SARM gem5 Developers } else { // AArch64 104310037SARM gem5 Developers // Set the FAR register. Nothing else to do if we are in AArch64 state 104410037SARM gem5 Developers // because the syndrome register has already been set inside invoke64() 104511585SDylan.Johnson@ARM.com if (stage2) { 104611585SDylan.Johnson@ARM.com // stage 2 fault, set HPFAR_EL2 to the faulting IPA 104711585SDylan.Johnson@ARM.com // and FAR_EL2 to the Original VA 104811585SDylan.Johnson@ARM.com tc->setMiscReg(AbortFault<T>::getFaultAddrReg64(), OVAddr); 104911585SDylan.Johnson@ARM.com tc->setMiscReg(MISCREG_HPFAR_EL2, bits(faultAddr, 47, 12) << 4); 105011585SDylan.Johnson@ARM.com 105111585SDylan.Johnson@ARM.com DPRINTF(Faults, "Abort Fault (Stage 2) VA: 0x%x IPA: 0x%x\n", 105211585SDylan.Johnson@ARM.com OVAddr, faultAddr); 105311585SDylan.Johnson@ARM.com } else { 105411585SDylan.Johnson@ARM.com tc->setMiscReg(AbortFault<T>::getFaultAddrReg64(), faultAddr); 105511585SDylan.Johnson@ARM.com } 105610037SARM gem5 Developers } 105710037SARM gem5 Developers} 105810037SARM gem5 Developers 105910037SARM gem5 Developerstemplate<class T> 106010037SARM gem5 DevelopersFSR 106110037SARM gem5 DevelopersAbortFault<T>::getFsr(ThreadContext *tc) 106210037SARM gem5 Developers{ 10637362Sgblack@eecs.umich.edu FSR fsr = 0; 10648314Sgeoffrey.blake@arm.com 106510037SARM gem5 Developers if (((CPSR) tc->readMiscRegNoEffect(MISCREG_CPSR)).width) { 106610037SARM gem5 Developers // AArch32 106710037SARM gem5 Developers assert(tranMethod != ArmFault::UnknownTran); 106810037SARM gem5 Developers if (tranMethod == ArmFault::LpaeTran) { 106910037SARM gem5 Developers srcEncoded = ArmFault::longDescFaultSources[source]; 107010037SARM gem5 Developers fsr.status = srcEncoded; 107110037SARM gem5 Developers fsr.lpae = 1; 107210037SARM gem5 Developers } else { 107310037SARM gem5 Developers srcEncoded = ArmFault::shortDescFaultSources[source]; 107410037SARM gem5 Developers fsr.fsLow = bits(srcEncoded, 3, 0); 107510037SARM gem5 Developers fsr.fsHigh = bits(srcEncoded, 4); 107610037SARM gem5 Developers fsr.domain = static_cast<uint8_t>(domain); 107710037SARM gem5 Developers } 107810037SARM gem5 Developers fsr.wnr = (write ? 1 : 0); 107910037SARM gem5 Developers fsr.ext = 0; 108010037SARM gem5 Developers } else { 108110037SARM gem5 Developers // AArch64 108210037SARM gem5 Developers srcEncoded = ArmFault::aarch64FaultSources[source]; 108310037SARM gem5 Developers } 108410037SARM gem5 Developers if (srcEncoded == ArmFault::FaultSourceInvalid) { 108510037SARM gem5 Developers panic("Invalid fault source\n"); 108610037SARM gem5 Developers } 108710037SARM gem5 Developers return fsr; 108810037SARM gem5 Developers} 108910037SARM gem5 Developers 109010037SARM gem5 Developerstemplate<class T> 109110037SARM gem5 Developersbool 109210037SARM gem5 DevelopersAbortFault<T>::abortDisable(ThreadContext *tc) 109310037SARM gem5 Developers{ 109410037SARM gem5 Developers if (ArmSystem::haveSecurity(tc)) { 109510037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 109610037SARM gem5 Developers return (!scr.ns || scr.aw); 109710037SARM gem5 Developers } 109810037SARM gem5 Developers return true; 109910037SARM gem5 Developers} 110010037SARM gem5 Developers 110110037SARM gem5 Developerstemplate<class T> 110210037SARM gem5 Developersvoid 110310037SARM gem5 DevelopersAbortFault<T>::annotate(ArmFault::AnnotationIDs id, uint64_t val) 110410037SARM gem5 Developers{ 110510037SARM gem5 Developers switch (id) 110610037SARM gem5 Developers { 110710037SARM gem5 Developers case ArmFault::S1PTW: 110810037SARM gem5 Developers s1ptw = val; 110910037SARM gem5 Developers break; 111010037SARM gem5 Developers case ArmFault::OVA: 111110037SARM gem5 Developers OVAddr = val; 111210037SARM gem5 Developers break; 111310037SARM gem5 Developers 111410037SARM gem5 Developers // Just ignore unknown ID's 111510037SARM gem5 Developers default: 111610037SARM gem5 Developers break; 111710037SARM gem5 Developers } 111810037SARM gem5 Developers} 111910037SARM gem5 Developers 112010037SARM gem5 Developerstemplate<class T> 112110037SARM gem5 Developersuint32_t 112210037SARM gem5 DevelopersAbortFault<T>::iss() const 112310037SARM gem5 Developers{ 112410037SARM gem5 Developers uint32_t val; 112510037SARM gem5 Developers 112610037SARM gem5 Developers val = srcEncoded & 0x3F; 112710037SARM gem5 Developers val |= write << 6; 112810037SARM gem5 Developers val |= s1ptw << 7; 112910037SARM gem5 Developers return (val); 113010037SARM gem5 Developers} 113110037SARM gem5 Developers 113210037SARM gem5 Developerstemplate<class T> 113310037SARM gem5 Developersbool 113410037SARM gem5 DevelopersAbortFault<T>::isMMUFault() const 113510037SARM gem5 Developers{ 113610037SARM gem5 Developers // NOTE: Not relying on LL information being aligned to lowest bits here 113710037SARM gem5 Developers return 113810037SARM gem5 Developers (source == ArmFault::AlignmentFault) || 113910037SARM gem5 Developers ((source >= ArmFault::TranslationLL) && 114010037SARM gem5 Developers (source < ArmFault::TranslationLL + 4)) || 114110037SARM gem5 Developers ((source >= ArmFault::AccessFlagLL) && 114210037SARM gem5 Developers (source < ArmFault::AccessFlagLL + 4)) || 114310037SARM gem5 Developers ((source >= ArmFault::DomainLL) && 114410037SARM gem5 Developers (source < ArmFault::DomainLL + 4)) || 114510037SARM gem5 Developers ((source >= ArmFault::PermissionLL) && 114610037SARM gem5 Developers (source < ArmFault::PermissionLL + 4)); 114710037SARM gem5 Developers} 114810037SARM gem5 Developers 114910037SARM gem5 DevelopersExceptionClass 115010037SARM gem5 DevelopersPrefetchAbort::ec(ThreadContext *tc) const 115110037SARM gem5 Developers{ 115210037SARM gem5 Developers if (to64) { 115310037SARM gem5 Developers // AArch64 115410037SARM gem5 Developers if (toEL == fromEL) 115510037SARM gem5 Developers return EC_PREFETCH_ABORT_CURR_EL; 115610037SARM gem5 Developers else 115710037SARM gem5 Developers return EC_PREFETCH_ABORT_LOWER_EL; 115810037SARM gem5 Developers } else { 115910037SARM gem5 Developers // AArch32 116010037SARM gem5 Developers // Abort faults have different EC codes depending on whether 116110037SARM gem5 Developers // the fault originated within HYP mode, or not. So override 116210037SARM gem5 Developers // the method and add the extra adjustment of the EC value. 116310037SARM gem5 Developers 116410037SARM gem5 Developers ExceptionClass ec = ArmFaultVals<PrefetchAbort>::vals.ec; 116510037SARM gem5 Developers 116610037SARM gem5 Developers CPSR spsr = tc->readMiscReg(MISCREG_SPSR_HYP); 116710037SARM gem5 Developers if (spsr.mode == MODE_HYP) { 116810037SARM gem5 Developers ec = ((ExceptionClass) (((uint32_t) ec) + 1)); 116910037SARM gem5 Developers } 117010037SARM gem5 Developers return ec; 117110037SARM gem5 Developers } 117210037SARM gem5 Developers} 117310037SARM gem5 Developers 117410037SARM gem5 Developersbool 117510037SARM gem5 DevelopersPrefetchAbort::routeToMonitor(ThreadContext *tc) const 117610037SARM gem5 Developers{ 117710037SARM gem5 Developers SCR scr = 0; 117810037SARM gem5 Developers if (from64) 117910037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 118010037SARM gem5 Developers else 118110037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR); 118210037SARM gem5 Developers 118310037SARM gem5 Developers return scr.ea && !isMMUFault(); 118410037SARM gem5 Developers} 118510037SARM gem5 Developers 118610037SARM gem5 Developersbool 118710037SARM gem5 DevelopersPrefetchAbort::routeToHyp(ThreadContext *tc) const 118810037SARM gem5 Developers{ 118910037SARM gem5 Developers bool toHyp; 119010037SARM gem5 Developers 119110037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 119210037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 119310037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 119410037SARM gem5 Developers HDCR hdcr = tc->readMiscRegNoEffect(MISCREG_HDCR); 119510037SARM gem5 Developers 119610037SARM gem5 Developers // if in Hyp mode then stay in Hyp mode 119710037SARM gem5 Developers toHyp = scr.ns && (cpsr.mode == MODE_HYP); 119810037SARM gem5 Developers // otherwise, check whether to take to Hyp mode through Hyp Trap vector 119910037SARM gem5 Developers toHyp |= (stage2 || 120010037SARM gem5 Developers ( (source == DebugEvent) && hdcr.tde && (cpsr.mode != MODE_HYP)) || 120110037SARM gem5 Developers ( (source == SynchronousExternalAbort) && hcr.tge && (cpsr.mode == MODE_USER)) 120211581SDylan.Johnson@ARM.com ) && !inSecureState(tc); 120310037SARM gem5 Developers return toHyp; 120410037SARM gem5 Developers} 120510037SARM gem5 Developers 120610037SARM gem5 DevelopersExceptionClass 120710037SARM gem5 DevelopersDataAbort::ec(ThreadContext *tc) const 120810037SARM gem5 Developers{ 120910037SARM gem5 Developers if (to64) { 121010037SARM gem5 Developers // AArch64 121110037SARM gem5 Developers if (source == ArmFault::AsynchronousExternalAbort) { 121210367SAndrew.Bardsley@arm.com panic("Asynchronous External Abort should be handled with " 121310367SAndrew.Bardsley@arm.com "SystemErrors (SErrors)!"); 121410037SARM gem5 Developers } 121510037SARM gem5 Developers if (toEL == fromEL) 121610037SARM gem5 Developers return EC_DATA_ABORT_CURR_EL; 121710037SARM gem5 Developers else 121810037SARM gem5 Developers return EC_DATA_ABORT_LOWER_EL; 121910037SARM gem5 Developers } else { 122010037SARM gem5 Developers // AArch32 122110037SARM gem5 Developers // Abort faults have different EC codes depending on whether 122210037SARM gem5 Developers // the fault originated within HYP mode, or not. So override 122310037SARM gem5 Developers // the method and add the extra adjustment of the EC value. 122410037SARM gem5 Developers 122510037SARM gem5 Developers ExceptionClass ec = ArmFaultVals<DataAbort>::vals.ec; 122610037SARM gem5 Developers 122710037SARM gem5 Developers CPSR spsr = tc->readMiscReg(MISCREG_SPSR_HYP); 122810037SARM gem5 Developers if (spsr.mode == MODE_HYP) { 122910037SARM gem5 Developers ec = ((ExceptionClass) (((uint32_t) ec) + 1)); 123010037SARM gem5 Developers } 123110037SARM gem5 Developers return ec; 123210037SARM gem5 Developers } 123310037SARM gem5 Developers} 123410037SARM gem5 Developers 123510037SARM gem5 Developersbool 123610037SARM gem5 DevelopersDataAbort::routeToMonitor(ThreadContext *tc) const 123710037SARM gem5 Developers{ 123810037SARM gem5 Developers SCR scr = 0; 123910037SARM gem5 Developers if (from64) 124010037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 124110037SARM gem5 Developers else 124210037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR); 124310037SARM gem5 Developers 124410037SARM gem5 Developers return scr.ea && !isMMUFault(); 124510037SARM gem5 Developers} 124610037SARM gem5 Developers 124710037SARM gem5 Developersbool 124810037SARM gem5 DevelopersDataAbort::routeToHyp(ThreadContext *tc) const 124910037SARM gem5 Developers{ 125010037SARM gem5 Developers bool toHyp; 125110037SARM gem5 Developers 125210037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 125310037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 125410037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 125510037SARM gem5 Developers HDCR hdcr = tc->readMiscRegNoEffect(MISCREG_HDCR); 125610037SARM gem5 Developers 125710037SARM gem5 Developers // if in Hyp mode then stay in Hyp mode 125810037SARM gem5 Developers toHyp = scr.ns && (cpsr.mode == MODE_HYP); 125910037SARM gem5 Developers // otherwise, check whether to take to Hyp mode through Hyp Trap vector 126010037SARM gem5 Developers toHyp |= (stage2 || 126110037SARM gem5 Developers ( (cpsr.mode != MODE_HYP) && ( ((source == AsynchronousExternalAbort) && hcr.amo) || 126210037SARM gem5 Developers ((source == DebugEvent) && hdcr.tde) ) 126310037SARM gem5 Developers ) || 126410037SARM gem5 Developers ( (cpsr.mode == MODE_USER) && hcr.tge && 126510037SARM gem5 Developers ((source == AlignmentFault) || 126610037SARM gem5 Developers (source == SynchronousExternalAbort)) 126710037SARM gem5 Developers ) 126811581SDylan.Johnson@ARM.com ) && !inSecureState(tc); 126910037SARM gem5 Developers return toHyp; 127010037SARM gem5 Developers} 127110037SARM gem5 Developers 127210037SARM gem5 Developersuint32_t 127310037SARM gem5 DevelopersDataAbort::iss() const 127410037SARM gem5 Developers{ 127510037SARM gem5 Developers uint32_t val; 127610037SARM gem5 Developers 127710037SARM gem5 Developers // Add on the data abort specific fields to the generic abort ISS value 127810037SARM gem5 Developers val = AbortFault<DataAbort>::iss(); 127910037SARM gem5 Developers // ISS is valid if not caused by a stage 1 page table walk, and when taken 128010037SARM gem5 Developers // to AArch64 only when directed to EL2 128110037SARM gem5 Developers if (!s1ptw && (!to64 || toEL == EL2)) { 128210037SARM gem5 Developers val |= isv << 24; 128310037SARM gem5 Developers if (isv) { 128410037SARM gem5 Developers val |= sas << 22; 128510037SARM gem5 Developers val |= sse << 21; 128610037SARM gem5 Developers val |= srt << 16; 128710037SARM gem5 Developers // AArch64 only. These assignments are safe on AArch32 as well 128810037SARM gem5 Developers // because these vars are initialized to false 128910037SARM gem5 Developers val |= sf << 15; 129010037SARM gem5 Developers val |= ar << 14; 129110037SARM gem5 Developers } 129210037SARM gem5 Developers } 129310037SARM gem5 Developers return (val); 129410037SARM gem5 Developers} 129510037SARM gem5 Developers 129610037SARM gem5 Developersvoid 129710037SARM gem5 DevelopersDataAbort::annotate(AnnotationIDs id, uint64_t val) 129810037SARM gem5 Developers{ 129910037SARM gem5 Developers AbortFault<DataAbort>::annotate(id, val); 130010037SARM gem5 Developers switch (id) 130110037SARM gem5 Developers { 130210037SARM gem5 Developers case SAS: 130310037SARM gem5 Developers isv = true; 130410037SARM gem5 Developers sas = val; 130510037SARM gem5 Developers break; 130610037SARM gem5 Developers case SSE: 130710037SARM gem5 Developers isv = true; 130810037SARM gem5 Developers sse = val; 130910037SARM gem5 Developers break; 131010037SARM gem5 Developers case SRT: 131110037SARM gem5 Developers isv = true; 131210037SARM gem5 Developers srt = val; 131310037SARM gem5 Developers break; 131410037SARM gem5 Developers case SF: 131510037SARM gem5 Developers isv = true; 131610037SARM gem5 Developers sf = val; 131710037SARM gem5 Developers break; 131810037SARM gem5 Developers case AR: 131910037SARM gem5 Developers isv = true; 132010037SARM gem5 Developers ar = val; 132110037SARM gem5 Developers break; 132210037SARM gem5 Developers // Just ignore unknown ID's 132310037SARM gem5 Developers default: 132410037SARM gem5 Developers break; 132510037SARM gem5 Developers } 132610037SARM gem5 Developers} 132710037SARM gem5 Developers 132810037SARM gem5 Developersvoid 132910417Sandreas.hansson@arm.comVirtualDataAbort::invoke(ThreadContext *tc, const StaticInstPtr &inst) 133010037SARM gem5 Developers{ 133110037SARM gem5 Developers AbortFault<VirtualDataAbort>::invoke(tc, inst); 133210037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 133310037SARM gem5 Developers hcr.va = 0; 133410037SARM gem5 Developers tc->setMiscRegNoEffect(MISCREG_HCR, hcr); 133510037SARM gem5 Developers} 133610037SARM gem5 Developers 133710037SARM gem5 Developersbool 133810037SARM gem5 DevelopersInterrupt::routeToMonitor(ThreadContext *tc) const 133910037SARM gem5 Developers{ 134010037SARM gem5 Developers assert(ArmSystem::haveSecurity(tc)); 134110037SARM gem5 Developers SCR scr = 0; 134210037SARM gem5 Developers if (from64) 134310037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 134410037SARM gem5 Developers else 134510037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR); 134610037SARM gem5 Developers return scr.irq; 134710037SARM gem5 Developers} 134810037SARM gem5 Developers 134910037SARM gem5 Developersbool 135010037SARM gem5 DevelopersInterrupt::routeToHyp(ThreadContext *tc) const 135110037SARM gem5 Developers{ 135210037SARM gem5 Developers bool toHyp; 135310037SARM gem5 Developers 135410037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 135510037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 135610037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 135710037SARM gem5 Developers // Determine whether IRQs are routed to Hyp mode. 135811581SDylan.Johnson@ARM.com toHyp = (!scr.irq && hcr.imo && !inSecureState(tc)) || 135910037SARM gem5 Developers (cpsr.mode == MODE_HYP); 136010037SARM gem5 Developers return toHyp; 136110037SARM gem5 Developers} 136210037SARM gem5 Developers 136310037SARM gem5 Developersbool 136410037SARM gem5 DevelopersInterrupt::abortDisable(ThreadContext *tc) 136510037SARM gem5 Developers{ 136610037SARM gem5 Developers if (ArmSystem::haveSecurity(tc)) { 136710037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 136810037SARM gem5 Developers return (!scr.ns || scr.aw); 136910037SARM gem5 Developers } 137010037SARM gem5 Developers return true; 137110037SARM gem5 Developers} 137210037SARM gem5 Developers 137310037SARM gem5 DevelopersVirtualInterrupt::VirtualInterrupt() 137410037SARM gem5 Developers{} 137510037SARM gem5 Developers 137610037SARM gem5 Developersbool 137710037SARM gem5 DevelopersFastInterrupt::routeToMonitor(ThreadContext *tc) const 137810037SARM gem5 Developers{ 137910037SARM gem5 Developers assert(ArmSystem::haveSecurity(tc)); 138010037SARM gem5 Developers SCR scr = 0; 138110037SARM gem5 Developers if (from64) 138210037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 138310037SARM gem5 Developers else 138410037SARM gem5 Developers scr = tc->readMiscRegNoEffect(MISCREG_SCR); 138510037SARM gem5 Developers return scr.fiq; 138610037SARM gem5 Developers} 138710037SARM gem5 Developers 138810037SARM gem5 Developersbool 138910037SARM gem5 DevelopersFastInterrupt::routeToHyp(ThreadContext *tc) const 139010037SARM gem5 Developers{ 139110037SARM gem5 Developers bool toHyp; 139210037SARM gem5 Developers 139310037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 139410037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 139510037SARM gem5 Developers CPSR cpsr = tc->readMiscRegNoEffect(MISCREG_CPSR); 139610037SARM gem5 Developers // Determine whether IRQs are routed to Hyp mode. 139711581SDylan.Johnson@ARM.com toHyp = (!scr.fiq && hcr.fmo && !inSecureState(tc)) || 139810037SARM gem5 Developers (cpsr.mode == MODE_HYP); 139910037SARM gem5 Developers return toHyp; 140010037SARM gem5 Developers} 140110037SARM gem5 Developers 140210037SARM gem5 Developersbool 140310037SARM gem5 DevelopersFastInterrupt::abortDisable(ThreadContext *tc) 140410037SARM gem5 Developers{ 140510037SARM gem5 Developers if (ArmSystem::haveSecurity(tc)) { 140610037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 140710037SARM gem5 Developers return (!scr.ns || scr.aw); 140810037SARM gem5 Developers } 140910037SARM gem5 Developers return true; 141010037SARM gem5 Developers} 141110037SARM gem5 Developers 141210037SARM gem5 Developersbool 141310037SARM gem5 DevelopersFastInterrupt::fiqDisable(ThreadContext *tc) 141410037SARM gem5 Developers{ 141510037SARM gem5 Developers if (ArmSystem::haveVirtualization(tc)) { 141610037SARM gem5 Developers return true; 141710037SARM gem5 Developers } else if (ArmSystem::haveSecurity(tc)) { 141810037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR); 141910037SARM gem5 Developers return (!scr.ns || scr.fw); 142010037SARM gem5 Developers } 142110037SARM gem5 Developers return true; 142210037SARM gem5 Developers} 142310037SARM gem5 Developers 142410037SARM gem5 DevelopersVirtualFastInterrupt::VirtualFastInterrupt() 142510037SARM gem5 Developers{} 142610037SARM gem5 Developers 142710037SARM gem5 Developersvoid 142810417Sandreas.hansson@arm.comPCAlignmentFault::invoke(ThreadContext *tc, const StaticInstPtr &inst) 142910037SARM gem5 Developers{ 143010037SARM gem5 Developers ArmFaultVals<PCAlignmentFault>::invoke(tc, inst); 143110037SARM gem5 Developers assert(from64); 143210037SARM gem5 Developers // Set the FAR 143310037SARM gem5 Developers tc->setMiscReg(getFaultAddrReg64(), faultPC); 143410037SARM gem5 Developers} 143510037SARM gem5 Developers 143610037SARM gem5 DevelopersSPAlignmentFault::SPAlignmentFault() 143710037SARM gem5 Developers{} 143810037SARM gem5 Developers 143910037SARM gem5 DevelopersSystemError::SystemError() 144010037SARM gem5 Developers{} 144110037SARM gem5 Developers 144210037SARM gem5 Developersvoid 144310417Sandreas.hansson@arm.comSystemError::invoke(ThreadContext *tc, const StaticInstPtr &inst) 144410037SARM gem5 Developers{ 144511150Smitch.hayenga@arm.com tc->getCpuPtr()->clearInterrupt(tc->threadId(), INT_ABT, 0); 144610037SARM gem5 Developers ArmFault::invoke(tc, inst); 144710037SARM gem5 Developers} 144810037SARM gem5 Developers 144910037SARM gem5 Developersbool 145010037SARM gem5 DevelopersSystemError::routeToMonitor(ThreadContext *tc) const 145110037SARM gem5 Developers{ 145210037SARM gem5 Developers assert(ArmSystem::haveSecurity(tc)); 145310037SARM gem5 Developers assert(from64); 145410037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 145510037SARM gem5 Developers return scr.ea; 145610037SARM gem5 Developers} 145710037SARM gem5 Developers 145810037SARM gem5 Developersbool 145910037SARM gem5 DevelopersSystemError::routeToHyp(ThreadContext *tc) const 146010037SARM gem5 Developers{ 146110037SARM gem5 Developers bool toHyp; 146210037SARM gem5 Developers assert(from64); 146310037SARM gem5 Developers 146410037SARM gem5 Developers SCR scr = tc->readMiscRegNoEffect(MISCREG_SCR_EL3); 146510037SARM gem5 Developers HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR); 146610037SARM gem5 Developers 146711581SDylan.Johnson@ARM.com toHyp = (!scr.ea && hcr.amo && !inSecureState(tc)) || 146811581SDylan.Johnson@ARM.com (!scr.ea && !scr.rw && !hcr.amo && !inSecureState(tc)); 146910037SARM gem5 Developers return toHyp; 14707362Sgblack@eecs.umich.edu} 14717362Sgblack@eecs.umich.edu 147212299Sandreas.sandberg@arm.com 147312299Sandreas.sandberg@arm.comSoftwareBreakpoint::SoftwareBreakpoint(ExtMachInst _mach_inst, uint32_t _iss) 147412299Sandreas.sandberg@arm.com : ArmFaultVals<SoftwareBreakpoint>(_mach_inst, _iss) 147512299Sandreas.sandberg@arm.com{} 147612299Sandreas.sandberg@arm.com 147712299Sandreas.sandberg@arm.combool 147812299Sandreas.sandberg@arm.comSoftwareBreakpoint::routeToHyp(ThreadContext *tc) const 147912299Sandreas.sandberg@arm.com{ 148012299Sandreas.sandberg@arm.com assert(from64); 148112299Sandreas.sandberg@arm.com 148212299Sandreas.sandberg@arm.com const bool have_el2 = ArmSystem::haveVirtualization(tc); 148312299Sandreas.sandberg@arm.com 148412299Sandreas.sandberg@arm.com const HCR hcr = tc->readMiscRegNoEffect(MISCREG_HCR_EL2); 148512299Sandreas.sandberg@arm.com const HDCR mdcr = tc->readMiscRegNoEffect(MISCREG_MDCR_EL2); 148612299Sandreas.sandberg@arm.com 148712299Sandreas.sandberg@arm.com return have_el2 && !inSecureState(tc) && fromEL <= EL1 && 148812299Sandreas.sandberg@arm.com (hcr.tge || mdcr.tde); 148912299Sandreas.sandberg@arm.com} 149012299Sandreas.sandberg@arm.com 14917652Sminkyu.jeong@arm.comvoid 149210417Sandreas.hansson@arm.comArmSev::invoke(ThreadContext *tc, const StaticInstPtr &inst) { 14938518Sgeoffrey.blake@arm.com DPRINTF(Faults, "Invoking ArmSev Fault\n"); 14948806Sgblack@eecs.umich.edu if (!FullSystem) 14958806Sgblack@eecs.umich.edu return; 14968806Sgblack@eecs.umich.edu 14978806Sgblack@eecs.umich.edu // Set sev_mailbox to 1, clear the pending interrupt from remote 14988806Sgblack@eecs.umich.edu // SEV execution and let pipeline continue as pcState is still 14998806Sgblack@eecs.umich.edu // valid. 15008806Sgblack@eecs.umich.edu tc->setMiscReg(MISCREG_SEV_MAILBOX, 1); 150111150Smitch.hayenga@arm.com tc->getCpuPtr()->clearInterrupt(tc->threadId(), INT_SEV, 0); 15028518Sgeoffrey.blake@arm.com} 15038518Sgeoffrey.blake@arm.com 150410037SARM gem5 Developers// Instantiate all the templates to make the linker happy 150510037SARM gem5 Developerstemplate class ArmFaultVals<Reset>; 150610037SARM gem5 Developerstemplate class ArmFaultVals<UndefinedInstruction>; 150710037SARM gem5 Developerstemplate class ArmFaultVals<SupervisorCall>; 150810037SARM gem5 Developerstemplate class ArmFaultVals<SecureMonitorCall>; 150910037SARM gem5 Developerstemplate class ArmFaultVals<HypervisorCall>; 151010037SARM gem5 Developerstemplate class ArmFaultVals<PrefetchAbort>; 151110037SARM gem5 Developerstemplate class ArmFaultVals<DataAbort>; 151210037SARM gem5 Developerstemplate class ArmFaultVals<VirtualDataAbort>; 151310037SARM gem5 Developerstemplate class ArmFaultVals<HypervisorTrap>; 151410037SARM gem5 Developerstemplate class ArmFaultVals<Interrupt>; 151510037SARM gem5 Developerstemplate class ArmFaultVals<VirtualInterrupt>; 151610037SARM gem5 Developerstemplate class ArmFaultVals<FastInterrupt>; 151710037SARM gem5 Developerstemplate class ArmFaultVals<VirtualFastInterrupt>; 151810037SARM gem5 Developerstemplate class ArmFaultVals<SupervisorTrap>; 151910037SARM gem5 Developerstemplate class ArmFaultVals<SecureMonitorTrap>; 152010037SARM gem5 Developerstemplate class ArmFaultVals<PCAlignmentFault>; 152110037SARM gem5 Developerstemplate class ArmFaultVals<SPAlignmentFault>; 152210037SARM gem5 Developerstemplate class ArmFaultVals<SystemError>; 152312299Sandreas.sandberg@arm.comtemplate class ArmFaultVals<SoftwareBreakpoint>; 152410037SARM gem5 Developerstemplate class ArmFaultVals<ArmSev>; 152510037SARM gem5 Developerstemplate class AbortFault<PrefetchAbort>; 152610037SARM gem5 Developerstemplate class AbortFault<DataAbort>; 152710037SARM gem5 Developerstemplate class AbortFault<VirtualDataAbort>; 152810037SARM gem5 Developers 152910037SARM gem5 Developers 153010037SARM gem5 DevelopersIllegalInstSetStateFault::IllegalInstSetStateFault() 153110037SARM gem5 Developers{} 153210037SARM gem5 Developers 15336019Shines@cs.fsu.edu 15346019Shines@cs.fsu.edu} // namespace ArmISA 1535