system.cc revision 7897
12689Sktlim@umich.edu/* 22689Sktlim@umich.edu * Copyright (c) 2003-2006 The Regents of The University of Michigan 37897Shestness@cs.utexas.edu * Copyright (c) 2011 Regents of the University of California 42689Sktlim@umich.edu * All rights reserved. 52689Sktlim@umich.edu * 62689Sktlim@umich.edu * Redistribution and use in source and binary forms, with or without 72689Sktlim@umich.edu * modification, are permitted provided that the following conditions are 82689Sktlim@umich.edu * met: redistributions of source code must retain the above copyright 92689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer; 102689Sktlim@umich.edu * redistributions in binary form must reproduce the above copyright 112689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer in the 122689Sktlim@umich.edu * documentation and/or other materials provided with the distribution; 132689Sktlim@umich.edu * neither the name of the copyright holders nor the names of its 142689Sktlim@umich.edu * contributors may be used to endorse or promote products derived from 152689Sktlim@umich.edu * this software without specific prior written permission. 162689Sktlim@umich.edu * 172689Sktlim@umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 182689Sktlim@umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 192689Sktlim@umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 202689Sktlim@umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 212689Sktlim@umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 222689Sktlim@umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 232689Sktlim@umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 242689Sktlim@umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 252689Sktlim@umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 262689Sktlim@umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 272689Sktlim@umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 282689Sktlim@umich.edu * 292689Sktlim@umich.edu * Authors: Steve Reinhardt 302689Sktlim@umich.edu * Lisa Hsu 312689Sktlim@umich.edu * Nathan Binkert 322689Sktlim@umich.edu * Ali Saidi 337897Shestness@cs.utexas.edu * Rick Strong 342689Sktlim@umich.edu */ 352689Sktlim@umich.edu 362521SN/A#include "arch/isa_traits.hh" 373960Sgblack@eecs.umich.edu#include "arch/remote_gdb.hh" 384194Ssaidi@eecs.umich.edu#include "arch/utility.hh" 391070SN/A#include "base/loader/object_file.hh" 401070SN/A#include "base/loader/symtab.hh" 412521SN/A#include "base/trace.hh" 422680Sktlim@umich.edu#include "cpu/thread_context.hh" 436658Snate@binkert.org#include "config/full_system.hh" 446658Snate@binkert.org#include "config/the_isa.hh" 452521SN/A#include "mem/mem_object.hh" 462522SN/A#include "mem/physical.hh" 472037SN/A#include "sim/byteswap.hh" 4856SN/A#include "sim/system.hh" 495512SMichael.Adler@intel.com#include "sim/debug.hh" 506658Snate@binkert.org 512378SN/A#if FULL_SYSTEM 522521SN/A#include "arch/vtophys.hh" 532378SN/A#include "kern/kernel_stats.hh" 547723SAli.Saidi@ARM.com#include "mem/vport.hh" 554762Snate@binkert.org#else 564762Snate@binkert.org#include "params/System.hh" 572378SN/A#endif 582SN/A 592SN/Ausing namespace std; 602107SN/Ausing namespace TheISA; 612SN/A 622SN/Avector<System *> System::systemList; 632SN/A 642SN/Aint System::numSystemsRunning = 0; 652SN/A 661070SN/ASystem::System(Params *p) 675714Shsul@eecs.umich.edu : SimObject(p), physmem(p->physmem), _numContexts(0), 682378SN/A#if FULL_SYSTEM 692521SN/A init_param(p->init_param), 707580SAli.Saidi@arm.com loadAddrMask(p->load_addr_mask), 712378SN/A#else 727770SAli.Saidi@ARM.com pagePtr(0), 737770SAli.Saidi@ARM.com nextPID(0), 742378SN/A#endif 757897Shestness@cs.utexas.edu memoryMode(p->mem_mode), _params(p), 767897Shestness@cs.utexas.edu totalNumInsts(0), 777897Shestness@cs.utexas.edu instEventQueue("system instruction-based event queue") 782SN/A{ 791070SN/A // add self to global system list 801070SN/A systemList.push_back(this); 811070SN/A 822378SN/A#if FULL_SYSTEM 831070SN/A kernelSymtab = new SymbolTable; 844838Ssaidi@eecs.umich.edu if (!debugSymbolTable) 854838Ssaidi@eecs.umich.edu debugSymbolTable = new SymbolTable; 861070SN/A 872520SN/A 882520SN/A /** 892520SN/A * Get a functional port to memory 902520SN/A */ 912520SN/A Port *mem_port; 927723SAli.Saidi@ARM.com functionalPort = new FunctionalPort(name() + "-fport"); 932520SN/A mem_port = physmem->getPort("functional"); 947723SAli.Saidi@ARM.com functionalPort->setPeer(mem_port); 957723SAli.Saidi@ARM.com mem_port->setPeer(functionalPort); 962520SN/A 977723SAli.Saidi@ARM.com virtPort = new VirtualPort(name() + "-fport"); 982521SN/A mem_port = physmem->getPort("functional"); 997723SAli.Saidi@ARM.com virtPort->setPeer(mem_port); 1007723SAli.Saidi@ARM.com mem_port->setPeer(virtPort); 1012521SN/A 1022520SN/A 1031070SN/A /** 1042158SN/A * Load the kernel code into memory 1051070SN/A */ 1064762Snate@binkert.org if (params()->kernel == "") { 1075823Ssaidi@eecs.umich.edu inform("No kernel set for full system simulation. Assuming you know what" 1083812Ssaidi@eecs.umich.edu " you're doing...\n"); 1093812Ssaidi@eecs.umich.edu } else { 1103812Ssaidi@eecs.umich.edu // Load kernel code 1114762Snate@binkert.org kernel = createObjectFile(params()->kernel); 1125823Ssaidi@eecs.umich.edu inform("kernel located at: %s", params()->kernel); 1135222Sksewell@umich.edu 1143812Ssaidi@eecs.umich.edu if (kernel == NULL) 1154762Snate@binkert.org fatal("Could not load kernel file %s", params()->kernel); 1161070SN/A 1173812Ssaidi@eecs.umich.edu // Load program sections into memory 1187723SAli.Saidi@ARM.com kernel->loadSections(functionalPort, loadAddrMask); 1191070SN/A 1203812Ssaidi@eecs.umich.edu // setup entry points 1213812Ssaidi@eecs.umich.edu kernelStart = kernel->textBase(); 1223812Ssaidi@eecs.umich.edu kernelEnd = kernel->bssBase() + kernel->bssSize(); 1233812Ssaidi@eecs.umich.edu kernelEntry = kernel->entryPoint(); 1241070SN/A 1253812Ssaidi@eecs.umich.edu // load symbols 1263812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(kernelSymtab)) 1275823Ssaidi@eecs.umich.edu fatal("could not load kernel symbols\n"); 1281070SN/A 1293812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(kernelSymtab)) 1305823Ssaidi@eecs.umich.edu fatal("could not load kernel local symbols\n"); 1311070SN/A 1323812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(debugSymbolTable)) 1335823Ssaidi@eecs.umich.edu fatal("could not load kernel symbols\n"); 1341074SN/A 1353812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(debugSymbolTable)) 1365823Ssaidi@eecs.umich.edu fatal("could not load kernel local symbols\n"); 1371074SN/A 1383812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); 1393812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); 1403812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); 1413812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel loaded...\n"); 1423812Ssaidi@eecs.umich.edu } 1432378SN/A#endif // FULL_SYSTEM 1442378SN/A 1451070SN/A // increment the number of running systms 146878SN/A numSystemsRunning++; 1472SN/A} 1482SN/A 1492SN/ASystem::~System() 1502SN/A{ 1512378SN/A#if FULL_SYSTEM 1521070SN/A delete kernelSymtab; 1531070SN/A delete kernel; 1542378SN/A#else 1552378SN/A panic("System::fixFuncEventAddr needs to be rewritten " 1562378SN/A "to work with syscall emulation"); 1572378SN/A#endif // FULL_SYSTEM} 1582SN/A} 1592SN/A 1602901Ssaidi@eecs.umich.eduvoid 1614762Snate@binkert.orgSystem::setMemoryMode(Enums::MemoryMode mode) 1622901Ssaidi@eecs.umich.edu{ 1632901Ssaidi@eecs.umich.edu assert(getState() == Drained); 1642901Ssaidi@eecs.umich.edu memoryMode = mode; 1652901Ssaidi@eecs.umich.edu} 1662901Ssaidi@eecs.umich.edu 1673960Sgblack@eecs.umich.edubool System::breakpoint() 1683960Sgblack@eecs.umich.edu{ 1694095Sbinkertn@umich.edu if (remoteGDB.size()) 1704095Sbinkertn@umich.edu return remoteGDB[0]->breakpoint(); 1714095Sbinkertn@umich.edu return false; 1723960Sgblack@eecs.umich.edu} 1733960Sgblack@eecs.umich.edu 1747445Ssteve.reinhardt@amd.com/** 1757445Ssteve.reinhardt@amd.com * Setting rgdb_wait to a positive integer waits for a remote debugger to 1767445Ssteve.reinhardt@amd.com * connect to that context ID before continuing. This should really 1777445Ssteve.reinhardt@amd.com be a parameter on the CPU object or something... 1787445Ssteve.reinhardt@amd.com */ 1797445Ssteve.reinhardt@amd.comint rgdb_wait = -1; 1807445Ssteve.reinhardt@amd.com 181180SN/Aint 1825718Shsul@eecs.umich.eduSystem::registerThreadContext(ThreadContext *tc, int assigned) 1832SN/A{ 1845712Shsul@eecs.umich.edu int id; 1855718Shsul@eecs.umich.edu if (assigned == -1) { 1865718Shsul@eecs.umich.edu for (id = 0; id < threadContexts.size(); id++) { 1875718Shsul@eecs.umich.edu if (!threadContexts[id]) 1885718Shsul@eecs.umich.edu break; 1895718Shsul@eecs.umich.edu } 1905718Shsul@eecs.umich.edu 1915718Shsul@eecs.umich.edu if (threadContexts.size() <= id) 1925718Shsul@eecs.umich.edu threadContexts.resize(id + 1); 1935718Shsul@eecs.umich.edu } else { 1945718Shsul@eecs.umich.edu if (threadContexts.size() <= assigned) 1955718Shsul@eecs.umich.edu threadContexts.resize(assigned + 1); 1965718Shsul@eecs.umich.edu id = assigned; 1971806SN/A } 1981806SN/A 1992680Sktlim@umich.edu if (threadContexts[id]) 2005823Ssaidi@eecs.umich.edu fatal("Cannot have two CPUs with the same id (%d)\n", id); 2011806SN/A 2022680Sktlim@umich.edu threadContexts[id] = tc; 2035714Shsul@eecs.umich.edu _numContexts++; 2041070SN/A 2055512SMichael.Adler@intel.com int port = getRemoteGDBPort(); 2067445Ssteve.reinhardt@amd.com if (port) { 2074095Sbinkertn@umich.edu RemoteGDB *rgdb = new RemoteGDB(this, tc); 2085512SMichael.Adler@intel.com GDBListener *gdbl = new GDBListener(rgdb, port + id); 2094095Sbinkertn@umich.edu gdbl->listen(); 2107445Ssteve.reinhardt@amd.com 2114095Sbinkertn@umich.edu if (rgdb_wait != -1 && rgdb_wait == id) 2124095Sbinkertn@umich.edu gdbl->accept(); 2131070SN/A 2144095Sbinkertn@umich.edu if (remoteGDB.size() <= id) { 2154095Sbinkertn@umich.edu remoteGDB.resize(id + 1); 2164095Sbinkertn@umich.edu } 2174095Sbinkertn@umich.edu 2184095Sbinkertn@umich.edu remoteGDB[id] = rgdb; 2191070SN/A } 2201070SN/A 2211806SN/A return id; 222180SN/A} 22375SN/A 2246029Ssteve.reinhardt@amd.comint 2256029Ssteve.reinhardt@amd.comSystem::numRunningContexts() 2266029Ssteve.reinhardt@amd.com{ 2276029Ssteve.reinhardt@amd.com int running = 0; 2286029Ssteve.reinhardt@amd.com for (int i = 0; i < _numContexts; ++i) { 2296029Ssteve.reinhardt@amd.com if (threadContexts[i]->status() != ThreadContext::Halted) 2306029Ssteve.reinhardt@amd.com ++running; 2316029Ssteve.reinhardt@amd.com } 2326029Ssteve.reinhardt@amd.com return running; 2336029Ssteve.reinhardt@amd.com} 2346029Ssteve.reinhardt@amd.com 235180SN/Avoid 2367733SAli.Saidi@ARM.comSystem::initState() 2371129SN/A{ 2385713Shsul@eecs.umich.edu#if FULL_SYSTEM 2392114SN/A int i; 2402680Sktlim@umich.edu for (i = 0; i < threadContexts.size(); i++) 2414194Ssaidi@eecs.umich.edu TheISA::startupCPU(threadContexts[i], i); 2425713Shsul@eecs.umich.edu#endif 2431129SN/A} 2441129SN/A 2451129SN/Avoid 2465713Shsul@eecs.umich.eduSystem::replaceThreadContext(ThreadContext *tc, int context_id) 247180SN/A{ 2485713Shsul@eecs.umich.edu if (context_id >= threadContexts.size()) { 2492680Sktlim@umich.edu panic("replaceThreadContext: bad id, %d >= %d\n", 2505713Shsul@eecs.umich.edu context_id, threadContexts.size()); 251180SN/A } 252180SN/A 2535713Shsul@eecs.umich.edu threadContexts[context_id] = tc; 2545713Shsul@eecs.umich.edu if (context_id < remoteGDB.size()) 2555713Shsul@eecs.umich.edu remoteGDB[context_id]->replaceThreadContext(tc); 2562SN/A} 2572SN/A 2582378SN/A#if !FULL_SYSTEM 2592378SN/AAddr 2602378SN/ASystem::new_page() 2612378SN/A{ 2627770SAli.Saidi@ARM.com Addr return_addr = pagePtr << LogVMPageSize; 2637770SAli.Saidi@ARM.com ++pagePtr; 2643162Ssaidi@eecs.umich.edu if (return_addr >= physmem->size()) 2653162Ssaidi@eecs.umich.edu fatal("Out of memory, please increase size of physical memory."); 2662378SN/A return return_addr; 2672378SN/A} 2685795Ssaidi@eecs.umich.edu 2695795Ssaidi@eecs.umich.eduAddr 2705795Ssaidi@eecs.umich.eduSystem::memSize() 2715795Ssaidi@eecs.umich.edu{ 2725795Ssaidi@eecs.umich.edu return physmem->size(); 2735795Ssaidi@eecs.umich.edu} 2745795Ssaidi@eecs.umich.edu 2755795Ssaidi@eecs.umich.eduAddr 2765795Ssaidi@eecs.umich.eduSystem::freeMemSize() 2775795Ssaidi@eecs.umich.edu{ 2787770SAli.Saidi@ARM.com return physmem->size() - (pagePtr << LogVMPageSize); 2795795Ssaidi@eecs.umich.edu} 2805795Ssaidi@eecs.umich.edu 2812378SN/A#endif 2822378SN/A 2831070SN/Avoid 2847897Shestness@cs.utexas.eduSystem::resume() 2857897Shestness@cs.utexas.edu{ 2867897Shestness@cs.utexas.edu SimObject::resume(); 2877897Shestness@cs.utexas.edu totalNumInsts = 0; 2887897Shestness@cs.utexas.edu} 2897897Shestness@cs.utexas.edu 2907897Shestness@cs.utexas.eduvoid 2911070SN/ASystem::serialize(ostream &os) 2921070SN/A{ 2932378SN/A#if FULL_SYSTEM 2941984SN/A kernelSymtab->serialize("kernel_symtab", os); 2955183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 2967770SAli.Saidi@ARM.com SERIALIZE_SCALAR(pagePtr); 2977770SAli.Saidi@ARM.com SERIALIZE_SCALAR(nextPID); 2985183Ssaidi@eecs.umich.edu#endif 2991070SN/A} 3001070SN/A 3011070SN/A 3021070SN/Avoid 3031070SN/ASystem::unserialize(Checkpoint *cp, const string §ion) 3041070SN/A{ 3052378SN/A#if FULL_SYSTEM 3061984SN/A kernelSymtab->unserialize("kernel_symtab", cp, section); 3075183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 3087770SAli.Saidi@ARM.com UNSERIALIZE_SCALAR(pagePtr); 3097770SAli.Saidi@ARM.com UNSERIALIZE_SCALAR(nextPID); 3105183Ssaidi@eecs.umich.edu#endif 3111070SN/A} 3122SN/A 3132SN/Avoid 3142SN/ASystem::printSystems() 3152SN/A{ 3162SN/A vector<System *>::iterator i = systemList.begin(); 3172SN/A vector<System *>::iterator end = systemList.end(); 3182SN/A for (; i != end; ++i) { 3192SN/A System *sys = *i; 3202SN/A cerr << "System " << sys->name() << ": " << hex << sys << endl; 3212SN/A } 3222SN/A} 3232SN/A 3242SN/Avoid 3252SN/AprintSystems() 3262SN/A{ 3272SN/A System::printSystems(); 3282SN/A} 3292SN/A 3302902Ssaidi@eecs.umich.educonst char *System::MemoryModeStrings[3] = {"invalid", "atomic", 3312902Ssaidi@eecs.umich.edu "timing"}; 3322902Ssaidi@eecs.umich.edu 3334762Snate@binkert.org#if !FULL_SYSTEM 3342424SN/A 3354762Snate@binkert.orgSystem * 3364762Snate@binkert.orgSystemParams::create() 3372424SN/A{ 3385530Snate@binkert.org return new System(this); 3392424SN/A} 3402424SN/A 3412424SN/A#endif 342