system.cc revision 5712
12689Sktlim@umich.edu/* 22689Sktlim@umich.edu * Copyright (c) 2003-2006 The Regents of The University of Michigan 32689Sktlim@umich.edu * All rights reserved. 42689Sktlim@umich.edu * 52689Sktlim@umich.edu * Redistribution and use in source and binary forms, with or without 62689Sktlim@umich.edu * modification, are permitted provided that the following conditions are 72689Sktlim@umich.edu * met: redistributions of source code must retain the above copyright 82689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer; 92689Sktlim@umich.edu * redistributions in binary form must reproduce the above copyright 102689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer in the 112689Sktlim@umich.edu * documentation and/or other materials provided with the distribution; 122689Sktlim@umich.edu * neither the name of the copyright holders nor the names of its 132689Sktlim@umich.edu * contributors may be used to endorse or promote products derived from 142689Sktlim@umich.edu * this software without specific prior written permission. 152689Sktlim@umich.edu * 162689Sktlim@umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172689Sktlim@umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182689Sktlim@umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192689Sktlim@umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202689Sktlim@umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212689Sktlim@umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222689Sktlim@umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232689Sktlim@umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242689Sktlim@umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252689Sktlim@umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262689Sktlim@umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272689Sktlim@umich.edu * 282689Sktlim@umich.edu * Authors: Steve Reinhardt 292689Sktlim@umich.edu * Lisa Hsu 302689Sktlim@umich.edu * Nathan Binkert 312689Sktlim@umich.edu * Ali Saidi 322689Sktlim@umich.edu */ 332689Sktlim@umich.edu 342521SN/A#include "arch/isa_traits.hh" 353960Sgblack@eecs.umich.edu#include "arch/remote_gdb.hh" 364194Ssaidi@eecs.umich.edu#include "arch/utility.hh" 371070SN/A#include "base/loader/object_file.hh" 381070SN/A#include "base/loader/symtab.hh" 392521SN/A#include "base/trace.hh" 402680Sktlim@umich.edu#include "cpu/thread_context.hh" 412521SN/A#include "mem/mem_object.hh" 422522SN/A#include "mem/physical.hh" 432037SN/A#include "sim/byteswap.hh" 4456SN/A#include "sim/system.hh" 455512SMichael.Adler@intel.com#include "sim/debug.hh" 462378SN/A#if FULL_SYSTEM 472521SN/A#include "arch/vtophys.hh" 482378SN/A#include "kern/kernel_stats.hh" 494762Snate@binkert.org#else 504762Snate@binkert.org#include "params/System.hh" 512378SN/A#endif 522SN/A 532SN/Ausing namespace std; 542107SN/Ausing namespace TheISA; 552SN/A 562SN/Avector<System *> System::systemList; 572SN/A 582SN/Aint System::numSystemsRunning = 0; 592SN/A 601070SN/ASystem::System(Params *p) 615034Smilesck@eecs.umich.edu : SimObject(p), physmem(p->physmem), numcpus(0), 622378SN/A#if FULL_SYSTEM 632521SN/A init_param(p->init_param), 642640Sstever@eecs.umich.edu functionalPort(p->name + "-fport"), 652640Sstever@eecs.umich.edu virtPort(p->name + "-vport"), 662378SN/A#else 672378SN/A page_ptr(0), 684997Sgblack@eecs.umich.edu next_PID(0), 692378SN/A#endif 702902Ssaidi@eecs.umich.edu memoryMode(p->mem_mode), _params(p) 712SN/A{ 721070SN/A // add self to global system list 731070SN/A systemList.push_back(this); 741070SN/A 752378SN/A#if FULL_SYSTEM 761070SN/A kernelSymtab = new SymbolTable; 774838Ssaidi@eecs.umich.edu if (!debugSymbolTable) 784838Ssaidi@eecs.umich.edu debugSymbolTable = new SymbolTable; 791070SN/A 802520SN/A 812520SN/A /** 822520SN/A * Get a functional port to memory 832520SN/A */ 842520SN/A Port *mem_port; 852520SN/A mem_port = physmem->getPort("functional"); 862520SN/A functionalPort.setPeer(mem_port); 872520SN/A mem_port->setPeer(&functionalPort); 882520SN/A 892521SN/A mem_port = physmem->getPort("functional"); 902521SN/A virtPort.setPeer(mem_port); 912521SN/A mem_port->setPeer(&virtPort); 922521SN/A 932520SN/A 941070SN/A /** 952158SN/A * Load the kernel code into memory 961070SN/A */ 974762Snate@binkert.org if (params()->kernel == "") { 983812Ssaidi@eecs.umich.edu warn("No kernel set for full system simulation. Assuming you know what" 993812Ssaidi@eecs.umich.edu " you're doing...\n"); 1003812Ssaidi@eecs.umich.edu } else { 1013812Ssaidi@eecs.umich.edu // Load kernel code 1024762Snate@binkert.org kernel = createObjectFile(params()->kernel); 1035222Sksewell@umich.edu warn("kernel located at: %s", params()->kernel); 1045222Sksewell@umich.edu 1053812Ssaidi@eecs.umich.edu if (kernel == NULL) 1064762Snate@binkert.org fatal("Could not load kernel file %s", params()->kernel); 1071070SN/A 1083812Ssaidi@eecs.umich.edu // Load program sections into memory 1093812Ssaidi@eecs.umich.edu kernel->loadSections(&functionalPort, LoadAddrMask); 1101070SN/A 1113812Ssaidi@eecs.umich.edu // setup entry points 1123812Ssaidi@eecs.umich.edu kernelStart = kernel->textBase(); 1133812Ssaidi@eecs.umich.edu kernelEnd = kernel->bssBase() + kernel->bssSize(); 1143812Ssaidi@eecs.umich.edu kernelEntry = kernel->entryPoint(); 1151070SN/A 1163812Ssaidi@eecs.umich.edu // load symbols 1173812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(kernelSymtab)) 1183812Ssaidi@eecs.umich.edu panic("could not load kernel symbols\n"); 1191070SN/A 1203812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(kernelSymtab)) 1213812Ssaidi@eecs.umich.edu panic("could not load kernel local symbols\n"); 1221070SN/A 1233812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(debugSymbolTable)) 1243812Ssaidi@eecs.umich.edu panic("could not load kernel symbols\n"); 1251074SN/A 1263812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(debugSymbolTable)) 1273812Ssaidi@eecs.umich.edu panic("could not load kernel local symbols\n"); 1281074SN/A 1293812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); 1303812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); 1313812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); 1323812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel loaded...\n"); 1333812Ssaidi@eecs.umich.edu } 1342378SN/A#endif // FULL_SYSTEM 1352378SN/A 1361070SN/A // increment the number of running systms 137878SN/A numSystemsRunning++; 1382SN/A} 1392SN/A 1402SN/ASystem::~System() 1412SN/A{ 1422378SN/A#if FULL_SYSTEM 1431070SN/A delete kernelSymtab; 1441070SN/A delete kernel; 1452378SN/A#else 1462378SN/A panic("System::fixFuncEventAddr needs to be rewritten " 1472378SN/A "to work with syscall emulation"); 1482378SN/A#endif // FULL_SYSTEM} 1492SN/A} 1502SN/A 1511808SN/Aint rgdb_wait = -1; 1524095Sbinkertn@umich.eduint rgdb_enable = true; 1531808SN/A 1542901Ssaidi@eecs.umich.eduvoid 1554762Snate@binkert.orgSystem::setMemoryMode(Enums::MemoryMode mode) 1562901Ssaidi@eecs.umich.edu{ 1572901Ssaidi@eecs.umich.edu assert(getState() == Drained); 1582901Ssaidi@eecs.umich.edu memoryMode = mode; 1592901Ssaidi@eecs.umich.edu} 1602901Ssaidi@eecs.umich.edu 1613960Sgblack@eecs.umich.edubool System::breakpoint() 1623960Sgblack@eecs.umich.edu{ 1634095Sbinkertn@umich.edu if (remoteGDB.size()) 1644095Sbinkertn@umich.edu return remoteGDB[0]->breakpoint(); 1654095Sbinkertn@umich.edu return false; 1663960Sgblack@eecs.umich.edu} 1673960Sgblack@eecs.umich.edu 168180SN/Aint 1695712Shsul@eecs.umich.eduSystem::registerThreadContext(ThreadContext *tc) 1702SN/A{ 1715712Shsul@eecs.umich.edu int id; 1725712Shsul@eecs.umich.edu for (id = 0; id < threadContexts.size(); id++) { 1735712Shsul@eecs.umich.edu if (!threadContexts[id]) 1745712Shsul@eecs.umich.edu break; 1751806SN/A } 1761806SN/A 1772680Sktlim@umich.edu if (threadContexts.size() <= id) 1782680Sktlim@umich.edu threadContexts.resize(id + 1); 1791806SN/A 1802680Sktlim@umich.edu if (threadContexts[id]) 1811806SN/A panic("Cannot have two CPUs with the same id (%d)\n", id); 1821806SN/A 1832680Sktlim@umich.edu threadContexts[id] = tc; 1841806SN/A numcpus++; 1851070SN/A 1865512SMichael.Adler@intel.com int port = getRemoteGDBPort(); 1875512SMichael.Adler@intel.com if (rgdb_enable && port) { 1884095Sbinkertn@umich.edu RemoteGDB *rgdb = new RemoteGDB(this, tc); 1895512SMichael.Adler@intel.com GDBListener *gdbl = new GDBListener(rgdb, port + id); 1904095Sbinkertn@umich.edu gdbl->listen(); 1914095Sbinkertn@umich.edu /** 1924095Sbinkertn@umich.edu * Uncommenting this line waits for a remote debugger to 1934095Sbinkertn@umich.edu * connect to the simulator before continuing. 1944095Sbinkertn@umich.edu */ 1954095Sbinkertn@umich.edu if (rgdb_wait != -1 && rgdb_wait == id) 1964095Sbinkertn@umich.edu gdbl->accept(); 1971070SN/A 1984095Sbinkertn@umich.edu if (remoteGDB.size() <= id) { 1994095Sbinkertn@umich.edu remoteGDB.resize(id + 1); 2004095Sbinkertn@umich.edu } 2014095Sbinkertn@umich.edu 2024095Sbinkertn@umich.edu remoteGDB[id] = rgdb; 2031070SN/A } 2041070SN/A 2051806SN/A return id; 206180SN/A} 20775SN/A 208180SN/Avoid 2091129SN/ASystem::startup() 2101129SN/A{ 2112114SN/A int i; 2122680Sktlim@umich.edu for (i = 0; i < threadContexts.size(); i++) 2134194Ssaidi@eecs.umich.edu TheISA::startupCPU(threadContexts[i], i); 2141129SN/A} 2151129SN/A 2161129SN/Avoid 2172680Sktlim@umich.eduSystem::replaceThreadContext(ThreadContext *tc, int id) 218180SN/A{ 2192680Sktlim@umich.edu if (id >= threadContexts.size()) { 2202680Sktlim@umich.edu panic("replaceThreadContext: bad id, %d >= %d\n", 2212680Sktlim@umich.edu id, threadContexts.size()); 222180SN/A } 223180SN/A 2242680Sktlim@umich.edu threadContexts[id] = tc; 2254095Sbinkertn@umich.edu if (id < remoteGDB.size()) 2264095Sbinkertn@umich.edu remoteGDB[id]->replaceThreadContext(tc); 2272SN/A} 2282SN/A 2292378SN/A#if !FULL_SYSTEM 2302378SN/AAddr 2312378SN/ASystem::new_page() 2322378SN/A{ 2332378SN/A Addr return_addr = page_ptr << LogVMPageSize; 2342378SN/A ++page_ptr; 2353162Ssaidi@eecs.umich.edu if (return_addr >= physmem->size()) 2363162Ssaidi@eecs.umich.edu fatal("Out of memory, please increase size of physical memory."); 2372378SN/A return return_addr; 2382378SN/A} 2392378SN/A#endif 2402378SN/A 2411070SN/Avoid 2421070SN/ASystem::serialize(ostream &os) 2431070SN/A{ 2442378SN/A#if FULL_SYSTEM 2451984SN/A kernelSymtab->serialize("kernel_symtab", os); 2465183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 2475183Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(page_ptr); 2485183Ssaidi@eecs.umich.edu#endif 2491070SN/A} 2501070SN/A 2511070SN/A 2521070SN/Avoid 2531070SN/ASystem::unserialize(Checkpoint *cp, const string §ion) 2541070SN/A{ 2552378SN/A#if FULL_SYSTEM 2561984SN/A kernelSymtab->unserialize("kernel_symtab", cp, section); 2575183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 2585183Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(page_ptr); 2595183Ssaidi@eecs.umich.edu#endif 2601070SN/A} 2612SN/A 2622SN/Avoid 2632SN/ASystem::printSystems() 2642SN/A{ 2652SN/A vector<System *>::iterator i = systemList.begin(); 2662SN/A vector<System *>::iterator end = systemList.end(); 2672SN/A for (; i != end; ++i) { 2682SN/A System *sys = *i; 2692SN/A cerr << "System " << sys->name() << ": " << hex << sys << endl; 2702SN/A } 2712SN/A} 2722SN/A 2732SN/Avoid 2742SN/AprintSystems() 2752SN/A{ 2762SN/A System::printSystems(); 2772SN/A} 2782SN/A 2792902Ssaidi@eecs.umich.educonst char *System::MemoryModeStrings[3] = {"invalid", "atomic", 2802902Ssaidi@eecs.umich.edu "timing"}; 2812902Ssaidi@eecs.umich.edu 2824762Snate@binkert.org#if !FULL_SYSTEM 2832424SN/A 2844762Snate@binkert.orgSystem * 2854762Snate@binkert.orgSystemParams::create() 2862424SN/A{ 2875530Snate@binkert.org return new System(this); 2882424SN/A} 2892424SN/A 2902424SN/A#endif 291