simple_thread.cc revision 223
11761SN/A/* 22SN/A * Copyright (c) 2003 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262665Ssaidi@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu */ 282SN/A 292SN/A#include <string> 302SN/A 312SN/A#include "cpu/base_cpu.hh" 322SN/A#include "cpu/exec_context.hh" 336986Snate@binkert.org 342SN/A#ifdef FULL_SYSTEM 352SN/A#include "sim/system.hh" 362SN/A#else 376661Snate@binkert.org#include "sim/prog.hh" 382SN/A#endif 396987Snate@binkert.org 406987Snate@binkert.orgusing namespace std; 416984Snate@binkert.org 426984Snate@binkert.org// constructor 432SN/A#ifdef FULL_SYSTEM 446984Snate@binkert.orgExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys, 456984Snate@binkert.org AlphaItb *_itb, AlphaDtb *_dtb, 466984Snate@binkert.org FunctionalMemory *_mem) 476984Snate@binkert.org : _status(ExecContext::Unallocated), 486984Snate@binkert.org kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num), 496984Snate@binkert.org cpu_id(-1), mem(_mem), itb(_itb), dtb(_dtb), system(_sys), 506984Snate@binkert.org memCtrl(_sys->memCtrl), physmem(_sys->physmem), 516661Snate@binkert.org func_exe_insn(0), storeCondFailures(0) 526984Snate@binkert.org{ 536984Snate@binkert.org memset(®s, 0, sizeof(RegFile)); 546984Snate@binkert.org} 556984Snate@binkert.org#else 566984Snate@binkert.orgExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, 576984Snate@binkert.org Process *_process, int _asid) 586984Snate@binkert.org : _status(ExecContext::Unallocated), 596984Snate@binkert.org cpu(_cpu), thread_num(_thread_num), cpu_id(-1), 606984Snate@binkert.org process(_process), mem(process->getMemory()), asid(_asid), 616984Snate@binkert.org func_exe_insn(0), storeCondFailures(0) 626984Snate@binkert.org{ 636984Snate@binkert.org} 646984Snate@binkert.org 656984Snate@binkert.orgExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, 666984Snate@binkert.org FunctionalMemory *_mem, int _asid) 676984Snate@binkert.org : cpu(_cpu), thread_num(_thread_num), process(0), mem(_mem), asid(_asid), 686661Snate@binkert.org func_exe_insn(0), storeCondFailures(0) 696984Snate@binkert.org{ 706984Snate@binkert.org} 716984Snate@binkert.org#endif 726984Snate@binkert.org 736984Snate@binkert.org 746984Snate@binkert.orgvoid 756661Snate@binkert.orgExecContext::takeOverFrom(ExecContext *oldContext) 766986Snate@binkert.org{ 776986Snate@binkert.org // some things should already be set up 786986Snate@binkert.org assert(mem == oldContext->mem); 796986Snate@binkert.org#ifdef FULL_SYSTEM 806986Snate@binkert.org assert(system == oldContext->system); 816986Snate@binkert.org#else 826986Snate@binkert.org assert(process == oldContext->process); 836986Snate@binkert.org#endif 846986Snate@binkert.org 856986Snate@binkert.org // copy over functional state 866986Snate@binkert.org _status = oldContext->_status; 876986Snate@binkert.org#ifdef FULL_SYSTEM 886987Snate@binkert.org kernelStats = oldContext->kernelStats; 896986Snate@binkert.org#endif 906986Snate@binkert.org regs = oldContext->regs; 916986Snate@binkert.org cpu_id = oldContext->cpu_id; 926986Snate@binkert.org func_exe_insn = oldContext->func_exe_insn; 936986Snate@binkert.org 946986Snate@binkert.org storeCondFailures = 0; 956986Snate@binkert.org 966986Snate@binkert.org oldContext->_status = ExecContext::Unallocated; 976986Snate@binkert.org} 986986Snate@binkert.org 996986Snate@binkert.org 1006986Snate@binkert.orgvoid 1016986Snate@binkert.orgExecContext::serialize(ostream &os) 1026986Snate@binkert.org{ 1036986Snate@binkert.org SERIALIZE_ENUM(_status); 1046986Snate@binkert.org regs.serialize(os); 1056986Snate@binkert.org // thread_num and cpu_id are deterministic from the config 1066986Snate@binkert.org SERIALIZE_SCALAR(func_exe_insn); 1076986Snate@binkert.org} 1086986Snate@binkert.org 1096987Snate@binkert.org 1106986Snate@binkert.orgvoid 1116986Snate@binkert.orgExecContext::unserialize(const IniFile *db, const std::string §ion) 1126986Snate@binkert.org{ 1136986Snate@binkert.org UNSERIALIZE_ENUM(_status); 1146986Snate@binkert.org regs.unserialize(db, section); 1156986Snate@binkert.org // thread_num and cpu_id are deterministic from the config 1166661Snate@binkert.org UNSERIALIZE_SCALAR(func_exe_insn); 1176984Snate@binkert.org} 1186984Snate@binkert.org 1196984Snate@binkert.org 1206984Snate@binkert.orgvoid 1216984Snate@binkert.orgExecContext::setStatus(Status new_status) 1226661Snate@binkert.org{ 1236984Snate@binkert.org#ifdef FULL_SYSTEM 1246661Snate@binkert.org if (status() == new_status) 1256984Snate@binkert.org return; 1266991Snate@binkert.org 1276991Snate@binkert.org // Don't change the status from active if there are pending interrupts 1286984Snate@binkert.org if (new_status == Suspended && cpu->check_interrupts()) { 1296661Snate@binkert.org assert(status() == Active); 1306984Snate@binkert.org return; 1316984Snate@binkert.org } 1326661Snate@binkert.org#endif 1336984Snate@binkert.org 1346984Snate@binkert.org _status = new_status; 1356991Snate@binkert.org cpu->execCtxStatusChg(thread_num); 1366984Snate@binkert.org} 1376991Snate@binkert.org 1386661Snate@binkert.orgvoid 1396984Snate@binkert.orgExecContext::regStats(const string &name) 1406984Snate@binkert.org{ 1416984Snate@binkert.org#ifdef FULL_SYSTEM 1426991Snate@binkert.org kernelStats.regStats(name + ".kern"); 1432SN/A#endif 1446984Snate@binkert.org} 1456984Snate@binkert.org