1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * Copyright (c) 2007 MIPS Technologies, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright --- 15 unchanged lines hidden (view full) --- 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * Authors: Gabe Black 30 * Korey Sewell 31 * Jaidev Patwardhan |
32 */ 33 34#include "arch/mips/faults.hh" 35#include "arch/mips/pra_constants.hh" 36#include "base/trace.hh" 37#include "cpu/base.hh" 38#include "cpu/thread_context.hh" 39#include "debug/MipsPRA.hh" --- 51 unchanged lines hidden (view full) --- 91 { "Address Error", 0x180, ExcCodeDummy }; 92 93template <> FaultVals MipsFault<TlbInvalidFault>::vals = 94 { "Invalid TLB Entry Exception", 0x180, ExcCodeDummy }; 95 96template <> FaultVals MipsFault<TlbRefillFault>::vals = 97 { "TLB Refill Exception", 0x180, ExcCodeDummy }; 98 |
99template <> FaultVals MipsFault |
100 { "TLB Modified Exception", 0x180, ExcCodeMod }; 101 102void 103MipsFaultBase::setExceptionState(ThreadContext *tc, uint8_t excCode) 104{ 105 // modify SRS Ctl - Save CSS, put ESS into CSS 106 StatusReg status = tc->readMiscReg(MISCREG_STATUS); 107 if (status.exl != 1 && status.bev != 1) { --- 8 unchanged lines hidden (view full) --- 116 status.exl = 1; 117 tc->setMiscRegNoEffect(MISCREG_STATUS, status); 118 119 // write EPC 120 PCState pc = tc->pcState(); 121 DPRINTF(MipsPRA, "PC: %s\n", pc); 122 bool delay_slot = pc.pc() + sizeof(MachInst) != pc.npc(); 123 tc->setMiscRegNoEffect(MISCREG_EPC, |
124 pc.pc() - delay_slot ? sizeof(MachInst) : 0); |
125 126 // Set Cause_EXCCODE field 127 CauseReg cause = tc->readMiscReg(MISCREG_CAUSE); 128 cause.excCode = excCode; 129 cause.bd = delay_slot ? 1 : 0; 130 cause.ce = 0; 131 tc->setMiscRegNoEffect(MISCREG_CAUSE, cause); 132} 133 134void 135MipsFaultBase::invoke(ThreadContext *tc, StaticInstPtr inst) 136{ |
137 if (FullSystem) { |
138 DPRINTF(MipsPRA, "Fault %s encountered.\n", name()); 139 setExceptionState(tc, code()); 140 tc->pcState(vect(tc)); 141 } else { 142 panic("Fault %s encountered.\n", name()); 143 } 144} 145 146void 147ResetFault::invoke(ThreadContext *tc, StaticInstPtr inst) 148{ |
149 if (FullSystem) { |
150 DPRINTF(MipsPRA, "%s encountered.\n", name()); 151 /* All reset activity must be invoked from here */ 152 Addr handler = vect(tc); 153 tc->pcState(handler); 154 DPRINTF(MipsPRA, "ResetFault::invoke : PC set to %x", handler); 155 } 156 157 // Set Coprocessor 1 (Floating Point) To Usable --- 19 unchanged lines hidden --- |