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gem5/src/arch/mips/isa.cc

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/*
* Copyright (c) 2009 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#include "arch/mips/isa.hh"
#include "arch/mips/mt.hh"
#include "arch/mips/mt_constants.hh"
#include "arch/mips/pra_constants.hh"
#include "base/bitfield.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
#include "debug/MipsPRA.hh"
#include "params/MipsISA.hh"
namespace MipsISA
{
std::string
ISA::miscRegNames[NumMiscRegs] =
{
"Index", "MVPControl", "MVPConf0", "MVPConf1", "", "", "", "",
"Random", "VPEControl", "VPEConf0", "VPEConf1",
"YQMask", "VPESchedule", "VPEScheFBack", "VPEOpt",
"EntryLo0", "TCStatus", "TCBind", "TCRestart",
"TCHalt", "TCContext", "TCSchedule", "TCScheFBack",
"EntryLo1", "", "", "", "", "", "", "",
"Context", "ContextConfig", "", "", "", "", "", "",
"PageMask", "PageGrain", "", "", "", "", "", "",
"Wired", "SRSConf0", "SRCConf1", "SRSConf2",
"SRSConf3", "SRSConf4", "", "",
"HWREna", "", "", "", "", "", "", "",
"BadVAddr", "", "", "", "", "", "", "",
"Count", "", "", "", "", "", "", "",
"EntryHi", "", "", "", "", "", "", "",
"Compare", "", "", "", "", "", "", "",
"Status", "IntCtl", "SRSCtl", "SRSMap", "", "", "", "",
"Cause", "", "", "", "", "", "", "",
"EPC", "", "", "", "", "", "", "",
"PRId", "EBase", "", "", "", "", "", "",
"Config", "Config1", "Config2", "Config3", "", "", "", "",
"LLAddr", "", "", "", "", "", "", "",
"WatchLo0", "WatchLo1", "WatchLo2", "WatchLo3",
"WatchLo4", "WatchLo5", "WatchLo6", "WatchLo7",
"WatchHi0", "WatchHi1", "WatchHi2", "WatchHi3",
"WatchHi4", "WatchHi5", "WatchHi6", "WatchHi7",
"XCContext64", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"Debug", "TraceControl1", "TraceControl2", "UserTraceData",
"TraceBPC", "", "", "",
"DEPC", "", "", "", "", "", "", "",
"PerfCnt0", "PerfCnt1", "PerfCnt2", "PerfCnt3",
"PerfCnt4", "PerfCnt5", "PerfCnt6", "PerfCnt7",
"ErrCtl", "", "", "", "", "", "", "",
"CacheErr0", "CacheErr1", "CacheErr2", "CacheErr3", "", "", "", "",
"TagLo0", "DataLo1", "TagLo2", "DataLo3",
"TagLo4", "DataLo5", "TagLo6", "DataLo7",
"TagHi0", "DataHi1", "TagHi2", "DataHi3",
"TagHi4", "DataHi5", "TagHi6", "DataHi7",
"ErrorEPC", "", "", "", "", "", "", "",
"DESAVE", "", "", "", "", "", "", "",
"LLFlag"
};
ISA::ISA(Params *p)
: SimObject(p), numThreads(p->num_threads), numVpes(p->num_vpes)
{
miscRegFile.resize(NumMiscRegs);
bankType.resize(NumMiscRegs);
for (int i=0; i < NumMiscRegs; i++) {
miscRegFile[i].resize(1);
bankType[i] = perProcessor;
}
miscRegFile_WriteMask.resize(NumMiscRegs);
for (int i = 0; i < NumMiscRegs; i++) {
miscRegFile_WriteMask[i].push_back(0);
}
// Initialize all Per-VPE regs
uint32_t per_vpe_regs[] = { MISCREG_VPE_CONTROL,
MISCREG_VPE_CONF0, MISCREG_VPE_CONF1,
MISCREG_YQMASK,
MISCREG_VPE_SCHEDULE, MISCREG_VPE_SCHEFBACK,
MISCREG_VPE_OPT, MISCREG_SRS_CONF0,
MISCREG_SRS_CONF1, MISCREG_SRS_CONF2,
MISCREG_SRS_CONF3, MISCREG_SRS_CONF4,
MISCREG_EBASE
};
uint32_t num_vpe_regs = sizeof(per_vpe_regs) / 4;
for (int i = 0; i < num_vpe_regs; i++) {
if (numVpes > 1) {
miscRegFile[per_vpe_regs[i]].resize(numVpes);
}
bankType[per_vpe_regs[i]] = perVirtProcessor;
}
// Initialize all Per-TC regs
uint32_t per_tc_regs[] = { MISCREG_STATUS,
MISCREG_TC_STATUS, MISCREG_TC_BIND,
MISCREG_TC_RESTART, MISCREG_TC_HALT,
MISCREG_TC_CONTEXT, MISCREG_TC_SCHEDULE,
MISCREG_TC_SCHEFBACK,
MISCREG_DEBUG, MISCREG_LLADDR
};
uint32_t num_tc_regs = sizeof(per_tc_regs) / 4;
for (int i = 0; i < num_tc_regs; i++) {
miscRegFile[per_tc_regs[i]].resize(numThreads);
bankType[per_tc_regs[i]] = perThreadContext;
}
clear();
}
const MipsISAParams *
ISA::params() const
{
return dynamic_cast<const Params *>(_params);
}
void
ISA::clear()
{
for (int i = 0; i < NumMiscRegs; i++) {
for (int j = 0; j < miscRegFile[i].size(); j++)
miscRegFile[i][j] = 0;
for (int k = 0; k < miscRegFile_WriteMask[i].size(); k++)
miscRegFile_WriteMask[i][k] = (long unsigned int)(-1);
}
}
void
ISA::configCP()
{
DPRINTF(MipsPRA, "Resetting CP0 State with %i TCs and %i VPEs\n",
numThreads, numVpes);
CoreSpecific cp;
panic("CP state must be set before the following code is used");
// Do Default CP0 initialization HERE
// Do Initialization for MT cores here (eventually use
// core_name parameter to toggle this initialization)
// ===================================================
DPRINTF(MipsPRA, "Initializing CP0 State.... ");
PRIdReg procId = readMiscRegNoEffect(MISCREG_PRID);
procId.coOp = cp.CP0_PRId_CompanyOptions;
procId.coId = cp.CP0_PRId_CompanyID;
procId.procId = cp.CP0_PRId_ProcessorID;
procId.rev = cp.CP0_PRId_Revision;
setMiscRegNoEffect(MISCREG_PRID, procId);
// Now, create Write Mask for ProcID register
MiscReg procIDMask = 0; // Read-Only register
replaceBits(procIDMask, 0, 32, 0);
setRegMask(MISCREG_PRID, procIDMask);
// Config
ConfigReg cfg = readMiscRegNoEffect(MISCREG_CONFIG);
cfg.be = cp.CP0_Config_BE;
cfg.at = cp.CP0_Config_AT;
cfg.ar = cp.CP0_Config_AR;
cfg.mt = cp.CP0_Config_MT;
cfg.vi = cp.CP0_Config_VI;
cfg.m = 1;
setMiscRegNoEffect(MISCREG_CONFIG, cfg);
// Now, create Write Mask for Config register
MiscReg cfg_Mask = 0x7FFF0007;
replaceBits(cfg_Mask, 0, 32, 0);
setRegMask(MISCREG_CONFIG, cfg_Mask);
// Config1
Config1Reg cfg1 = readMiscRegNoEffect(MISCREG_CONFIG1);
cfg1.mmuSize = cp.CP0_Config1_MMU;
cfg1.is = cp.CP0_Config1_IS;
cfg1.il = cp.CP0_Config1_IL;
cfg1.ia = cp.CP0_Config1_IA;
cfg1.ds = cp.CP0_Config1_DS;
cfg1.dl = cp.CP0_Config1_DL;
cfg1.da = cp.CP0_Config1_DA;
cfg1.fp = cp.CP0_Config1_FP;
cfg1.ep = cp.CP0_Config1_EP;
cfg1.wr = cp.CP0_Config1_WR;
cfg1.md = cp.CP0_Config1_MD;
cfg1.c2 = cp.CP0_Config1_C2;
cfg1.pc = cp.CP0_Config1_PC;
cfg1.m = cp.CP0_Config1_M;
setMiscRegNoEffect(MISCREG_CONFIG1, cfg1);
// Now, create Write Mask for Config register
MiscReg cfg1_Mask = 0; // Read Only Register
replaceBits(cfg1_Mask, 0, 32, 0);
setRegMask(MISCREG_CONFIG1, cfg1_Mask);
// Config2
Config2Reg cfg2 = readMiscRegNoEffect(MISCREG_CONFIG2);
cfg2.tu = cp.CP0_Config2_TU;
cfg2.ts = cp.CP0_Config2_TS;
cfg2.tl = cp.CP0_Config2_TL;
cfg2.ta = cp.CP0_Config2_TA;
cfg2.su = cp.CP0_Config2_SU;
cfg2.ss = cp.CP0_Config2_SS;
cfg2.sl = cp.CP0_Config2_SL;
cfg2.sa = cp.CP0_Config2_SA;
cfg2.m = cp.CP0_Config2_M;
setMiscRegNoEffect(MISCREG_CONFIG2, cfg2);
// Now, create Write Mask for Config register
MiscReg cfg2_Mask = 0x7000F000; // Read Only Register
replaceBits(cfg2_Mask, 0, 32, 0);
setRegMask(MISCREG_CONFIG2, cfg2_Mask);
// Config3
Config3Reg cfg3 = readMiscRegNoEffect(MISCREG_CONFIG3);
cfg3.dspp = cp.CP0_Config3_DSPP;
cfg3.lpa = cp.CP0_Config3_LPA;
cfg3.veic = cp.CP0_Config3_VEIC;
cfg3.vint = cp.CP0_Config3_VInt;
cfg3.sp = cp.CP0_Config3_SP;
cfg3.mt = cp.CP0_Config3_MT;
cfg3.sm = cp.CP0_Config3_SM;
cfg3.tl = cp.CP0_Config3_TL;
setMiscRegNoEffect(MISCREG_CONFIG3, cfg3);
// Now, create Write Mask for Config register
MiscReg cfg3_Mask = 0; // Read Only Register
replaceBits(cfg3_Mask, 0, 32, 0);
setRegMask(MISCREG_CONFIG3, cfg3_Mask);
// EBase - CPUNum
EBaseReg eBase = readMiscRegNoEffect(MISCREG_EBASE);
eBase.cpuNum = cp.CP0_EBase_CPUNum;
replaceBits(eBase, 31, 31, 1);
setMiscRegNoEffect(MISCREG_EBASE, eBase);
// Now, create Write Mask for Config register
MiscReg EB_Mask = 0x3FFFF000;// Except Exception Base, the
// entire register is read only
replaceBits(EB_Mask, 0, 32, 0);
setRegMask(MISCREG_EBASE, EB_Mask);
// SRS Control - HSS (Highest Shadow Set)
SRSCtlReg scsCtl = readMiscRegNoEffect(MISCREG_SRSCTL);
scsCtl.hss = cp.CP0_SrsCtl_HSS;
setMiscRegNoEffect(MISCREG_SRSCTL, scsCtl);
// Now, create Write Mask for the SRS Ctl register
MiscReg SC_Mask = 0x0000F3C0;
replaceBits(SC_Mask, 0, 32, 0);
setRegMask(MISCREG_SRSCTL, SC_Mask);
// IntCtl - IPTI, IPPCI
IntCtlReg intCtl = readMiscRegNoEffect(MISCREG_INTCTL);
intCtl.ipti = cp.CP0_IntCtl_IPTI;
intCtl.ippci = cp.CP0_IntCtl_IPPCI;
setMiscRegNoEffect(MISCREG_INTCTL, intCtl);
// Now, create Write Mask for the IntCtl register
MiscReg IC_Mask = 0x000003E0;
replaceBits(IC_Mask, 0, 32, 0);
setRegMask(MISCREG_INTCTL, IC_Mask);
// Watch Hi - M - FIXME (More than 1 Watch register)
WatchHiReg watchHi = readMiscRegNoEffect(MISCREG_WATCHHI0);
watchHi.m = cp.CP0_WatchHi_M;
setMiscRegNoEffect(MISCREG_WATCHHI0, watchHi);
// Now, create Write Mask for the IntCtl register
MiscReg wh_Mask = 0x7FFF0FFF;
replaceBits(wh_Mask, 0, 32, 0);
setRegMask(MISCREG_WATCHHI0, wh_Mask);
// Perf Ctr - M - FIXME (More than 1 PerfCnt Pair)
PerfCntCtlReg perfCntCtl = readMiscRegNoEffect(MISCREG_PERFCNT0);
perfCntCtl.m = cp.CP0_PerfCtr_M;
perfCntCtl.w = cp.CP0_PerfCtr_W;
setMiscRegNoEffect(MISCREG_PERFCNT0, perfCntCtl);
// Now, create Write Mask for the IntCtl register
MiscReg pc_Mask = 0x00007FF;
replaceBits(pc_Mask, 0, 32, 0);
setRegMask(MISCREG_PERFCNT0, pc_Mask);
// Random
setMiscRegNoEffect(MISCREG_CP0_RANDOM, 63);
// Now, create Write Mask for the IntCtl register
MiscReg random_Mask = 0;
replaceBits(random_Mask, 0, 32, 0);
setRegMask(MISCREG_CP0_RANDOM, random_Mask);
// PageGrain
PageGrainReg pageGrain = readMiscRegNoEffect(MISCREG_PAGEGRAIN);
pageGrain.esp = cp.CP0_Config3_SP;
setMiscRegNoEffect(MISCREG_PAGEGRAIN, pageGrain);
// Now, create Write Mask for the IntCtl register
MiscReg pg_Mask = 0x10000000;
replaceBits(pg_Mask, 0, 32, 0);
setRegMask(MISCREG_PAGEGRAIN, pg_Mask);
// Status
StatusReg status = readMiscRegNoEffect(MISCREG_STATUS);
// Only CU0 and IE are modified on a reset - everything else needs
// to be controlled on a per CPU model basis
// Enable CP0 on reset
// status.cu0 = 1;
// Enable ERL bit on a reset
status.erl = 1;
// Enable BEV bit on a reset
status.bev = 1;
setMiscRegNoEffect(MISCREG_STATUS, status);
// Now, create Write Mask for the Status register
MiscReg stat_Mask = 0xFF78FF17;
replaceBits(stat_Mask, 0, 32, 0);
setRegMask(MISCREG_STATUS, stat_Mask);
// MVPConf0
MVPConf0Reg mvpConf0 = readMiscRegNoEffect(MISCREG_MVP_CONF0);
mvpConf0.tca = 1;
mvpConf0.pvpe = numVpes - 1;
mvpConf0.ptc = numThreads - 1;
setMiscRegNoEffect(MISCREG_MVP_CONF0, mvpConf0);
// VPEConf0
VPEConf0Reg vpeConf0 = readMiscRegNoEffect(MISCREG_VPE_CONF0);
vpeConf0.mvp = 1;
setMiscRegNoEffect(MISCREG_VPE_CONF0, vpeConf0);
// TCBind
for (ThreadID tid = 0; tid < numThreads; tid++) {
TCBindReg tcBind = readMiscRegNoEffect(MISCREG_TC_BIND, tid);
tcBind.curTC = tid;
setMiscRegNoEffect(MISCREG_TC_BIND, tcBind, tid);
}
// TCHalt
TCHaltReg tcHalt = readMiscRegNoEffect(MISCREG_TC_HALT);
tcHalt.h = 0;
setMiscRegNoEffect(MISCREG_TC_HALT, tcHalt);
// TCStatus
// Set TCStatus Activated to 1 for the initial thread that is running
TCStatusReg tcStatus = readMiscRegNoEffect(MISCREG_TC_STATUS);
tcStatus.a = 1;
setMiscRegNoEffect(MISCREG_TC_STATUS, tcStatus);
// Set Dynamically Allocatable bit to 1 for all other threads
for (ThreadID tid = 1; tid < numThreads; tid++) {
tcStatus = readMiscRegNoEffect(MISCREG_TC_STATUS, tid);
tcStatus.da = 1;
setMiscRegNoEffect(MISCREG_TC_STATUS, tcStatus, tid);
}
MiscReg mask = 0x7FFFFFFF;
// Now, create Write Mask for the Index register
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_INDEX, mask);
mask = 0x3FFFFFFF;
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_ENTRYLO0, mask);
setRegMask(MISCREG_ENTRYLO1, mask);
mask = 0xFF800000;
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_CONTEXT, mask);
mask = 0x1FFFF800;
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_PAGEMASK, mask);
mask = 0x0;
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_BADVADDR, mask);
setRegMask(MISCREG_LLADDR, mask);
mask = 0x08C00300;
replaceBits(mask, 0, 32, 0);
setRegMask(MISCREG_CAUSE, mask);
}
inline unsigned
ISA::getVPENum(ThreadID tid) const
{
TCBindReg tcBind = miscRegFile[MISCREG_TC_BIND][tid];
return tcBind.curVPE;
}
MiscReg
ISA::readMiscRegNoEffect(int misc_reg, ThreadID tid) const
{
unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
? tid : getVPENum(tid);
DPRINTF(MipsPRA, "Reading CP0 Register:%u Select:%u (%s) (%lx).\n",
misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
miscRegFile[misc_reg][reg_sel]);
return miscRegFile[misc_reg][reg_sel];
}
//@TODO: MIPS MT's register view automatically connects
// Status to TCStatus depending on current thread
//template <class TC>
MiscReg
ISA::readMiscReg(int misc_reg, ThreadContext *tc, ThreadID tid)
{
unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
? tid : getVPENum(tid);
DPRINTF(MipsPRA,
"Reading CP0 Register:%u Select:%u (%s) with effect (%lx).\n",
misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
miscRegFile[misc_reg][reg_sel]);
return miscRegFile[misc_reg][reg_sel];
}
void
ISA::setMiscRegNoEffect(int misc_reg, const MiscReg &val, ThreadID tid)
{
unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
? tid : getVPENum(tid);
DPRINTF(MipsPRA,
"[tid:%i]: Setting (direct set) CP0 Register:%u "
"Select:%u (%s) to %#x.\n",
tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
miscRegFile[misc_reg][reg_sel] = val;
}
void
ISA::setRegMask(int misc_reg, const MiscReg &val, ThreadID tid)
{
unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
? tid : getVPENum(tid);
DPRINTF(MipsPRA,
"[tid:%i]: Setting CP0 Register: %u Select: %u (%s) to %#x\n",
tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
miscRegFile_WriteMask[misc_reg][reg_sel] = val;
}
// PROGRAMMER'S NOTES:
// (1) Some CP0 Registers have fields that cannot
// be overwritten. Make sure to handle those particular registers
// with care!
void
ISA::setMiscReg(int misc_reg, const MiscReg &val,
ThreadContext *tc, ThreadID tid)
{
int reg_sel = (bankType[misc_reg] == perThreadContext)
? tid : getVPENum(tid);
DPRINTF(MipsPRA,
"[tid:%i]: Setting CP0 Register:%u "
"Select:%u (%s) to %#x, with effect.\n",
tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
MiscReg cp0_val = filterCP0Write(misc_reg, reg_sel, val);
miscRegFile[misc_reg][reg_sel] = cp0_val;
scheduleCP0Update(tc->getCpuPtr(), Cycles(1));
}
/**
* This method doesn't need to adjust the Control Register Offset
* since it has already been done in the calling method
* (setRegWithEffect)
*/
MiscReg
ISA::filterCP0Write(int misc_reg, int reg_sel, const MiscReg &val)
{
MiscReg retVal = val;
// Mask off read-only regions
retVal &= miscRegFile_WriteMask[misc_reg][reg_sel];
MiscReg curVal = miscRegFile[misc_reg][reg_sel];
// Mask off current alue with inverse mask (clear writeable bits)
curVal &= (~miscRegFile_WriteMask[misc_reg][reg_sel]);
retVal |= curVal; // Combine the two
DPRINTF(MipsPRA,
"filterCP0Write: Mask: %lx, Inverse Mask: %lx, write Val: %x, "
"current val: %lx, written val: %x\n",
miscRegFile_WriteMask[misc_reg][reg_sel],
~miscRegFile_WriteMask[misc_reg][reg_sel],
val, miscRegFile[misc_reg][reg_sel], retVal);
return retVal;
}
void
ISA::scheduleCP0Update(BaseCPU *cpu, Cycles delay)
{
if (!cp0Updated) {
cp0Updated = true;
//schedule UPDATE
CP0Event *cp0_event = new CP0Event(this, cpu, UpdateCP0);
cpu->schedule(cp0_event, cpu->clockEdge(delay));
}
}
void
ISA::updateCPU(BaseCPU *cpu)
{
///////////////////////////////////////////////////////////////////
//
// EVALUATE CP0 STATE FOR MIPS MT
//
///////////////////////////////////////////////////////////////////
MVPConf0Reg mvpConf0 = readMiscRegNoEffect(MISCREG_MVP_CONF0);
ThreadID num_threads = mvpConf0.ptc + 1;
for (ThreadID tid = 0; tid < num_threads; tid++) {
TCStatusReg tcStatus = readMiscRegNoEffect(MISCREG_TC_STATUS, tid);
TCHaltReg tcHalt = readMiscRegNoEffect(MISCREG_TC_HALT, tid);
//@todo: add vpe/mt check here thru mvpcontrol & vpecontrol regs
if (tcHalt.h == 1 || tcStatus.a == 0) {
haltThread(cpu->getContext(tid));
} else if (tcHalt.h == 0 && tcStatus.a == 1) {
restoreThread(cpu->getContext(tid));
}
}
num_threads = mvpConf0.ptc + 1;
// Toggle update flag after we finished updating
cp0Updated = false;
}
ISA::CP0Event::CP0Event(CP0 *_cp0, BaseCPU *_cpu, CP0EventType e_type)
: Event(CPU_Tick_Pri), cp0(_cp0), cpu(_cpu), cp0EventType(e_type)
{ }
void
ISA::CP0Event::process()
{
switch (cp0EventType)
{
case UpdateCP0:
cp0->updateCPU(cpu);
break;
}
}
const char *
ISA::CP0Event::description() const
{
return "Coprocessor-0 event";
}
void
ISA::CP0Event::scheduleEvent(Cycles delay)
{
cpu->reschedule(this, cpu->clockEdge(delay), true);
}
void
ISA::CP0Event::unscheduleEvent()
{
if (scheduled())
squash();
}
}
MipsISA::ISA *
MipsISAParams::create()
{
return new MipsISA::ISA(this);
}
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