system.cc revision 7650
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"
416658Snate@binkert.org#include "config/full_system.hh"
426658Snate@binkert.org#include "config/the_isa.hh"
432521SN/A#include "mem/mem_object.hh"
442522SN/A#include "mem/physical.hh"
452037SN/A#include "sim/byteswap.hh"
4656SN/A#include "sim/system.hh"
475512SMichael.Adler@intel.com#include "sim/debug.hh"
486658Snate@binkert.org
492378SN/A#if FULL_SYSTEM
502521SN/A#include "arch/vtophys.hh"
512378SN/A#include "kern/kernel_stats.hh"
524762Snate@binkert.org#else
534762Snate@binkert.org#include "params/System.hh"
542378SN/A#endif
552SN/A
562SN/Ausing namespace std;
572107SN/Ausing namespace TheISA;
582SN/A
592SN/Avector<System *> System::systemList;
602SN/A
612SN/Aint System::numSystemsRunning = 0;
622SN/A
631070SN/ASystem::System(Params *p)
645714Shsul@eecs.umich.edu    : SimObject(p), physmem(p->physmem), _numContexts(0),
652378SN/A#if FULL_SYSTEM
662521SN/A      init_param(p->init_param),
672640Sstever@eecs.umich.edu      functionalPort(p->name + "-fport"),
682640Sstever@eecs.umich.edu      virtPort(p->name + "-vport"),
697580SAli.Saidi@arm.com      loadAddrMask(p->load_addr_mask),
702378SN/A#else
712378SN/A      page_ptr(0),
724997Sgblack@eecs.umich.edu      next_PID(0),
732378SN/A#endif
742902Ssaidi@eecs.umich.edu      memoryMode(p->mem_mode), _params(p)
752SN/A{
761070SN/A    // add self to global system list
771070SN/A    systemList.push_back(this);
781070SN/A
792378SN/A#if FULL_SYSTEM
801070SN/A    kernelSymtab = new SymbolTable;
814838Ssaidi@eecs.umich.edu    if (!debugSymbolTable)
824838Ssaidi@eecs.umich.edu        debugSymbolTable = new SymbolTable;
831070SN/A
842520SN/A
852520SN/A    /**
862520SN/A     * Get a functional port to memory
872520SN/A     */
882520SN/A    Port *mem_port;
892520SN/A    mem_port = physmem->getPort("functional");
902520SN/A    functionalPort.setPeer(mem_port);
912520SN/A    mem_port->setPeer(&functionalPort);
922520SN/A
932521SN/A    mem_port = physmem->getPort("functional");
942521SN/A    virtPort.setPeer(mem_port);
952521SN/A    mem_port->setPeer(&virtPort);
962521SN/A
972520SN/A
981070SN/A    /**
992158SN/A     * Load the kernel code into memory
1001070SN/A     */
1014762Snate@binkert.org    if (params()->kernel == "") {
1025823Ssaidi@eecs.umich.edu        inform("No kernel set for full system simulation. Assuming you know what"
1033812Ssaidi@eecs.umich.edu                " you're doing...\n");
1043812Ssaidi@eecs.umich.edu    } else {
1053812Ssaidi@eecs.umich.edu        // Load kernel code
1064762Snate@binkert.org        kernel = createObjectFile(params()->kernel);
1075823Ssaidi@eecs.umich.edu        inform("kernel located at: %s", params()->kernel);
1085222Sksewell@umich.edu
1093812Ssaidi@eecs.umich.edu        if (kernel == NULL)
1104762Snate@binkert.org            fatal("Could not load kernel file %s", params()->kernel);
1111070SN/A
1123812Ssaidi@eecs.umich.edu        // Load program sections into memory
1137580SAli.Saidi@arm.com        kernel->loadSections(&functionalPort, loadAddrMask);
1141070SN/A
1153812Ssaidi@eecs.umich.edu        // setup entry points
1163812Ssaidi@eecs.umich.edu        kernelStart = kernel->textBase();
1173812Ssaidi@eecs.umich.edu        kernelEnd = kernel->bssBase() + kernel->bssSize();
1183812Ssaidi@eecs.umich.edu        kernelEntry = kernel->entryPoint();
1191070SN/A
1203812Ssaidi@eecs.umich.edu        // load symbols
1213812Ssaidi@eecs.umich.edu        if (!kernel->loadGlobalSymbols(kernelSymtab))
1225823Ssaidi@eecs.umich.edu            fatal("could not load kernel symbols\n");
1231070SN/A
1243812Ssaidi@eecs.umich.edu        if (!kernel->loadLocalSymbols(kernelSymtab))
1255823Ssaidi@eecs.umich.edu            fatal("could not load kernel local symbols\n");
1261070SN/A
1273812Ssaidi@eecs.umich.edu        if (!kernel->loadGlobalSymbols(debugSymbolTable))
1285823Ssaidi@eecs.umich.edu            fatal("could not load kernel symbols\n");
1291074SN/A
1303812Ssaidi@eecs.umich.edu        if (!kernel->loadLocalSymbols(debugSymbolTable))
1315823Ssaidi@eecs.umich.edu            fatal("could not load kernel local symbols\n");
1321074SN/A
1333812Ssaidi@eecs.umich.edu        DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
1343812Ssaidi@eecs.umich.edu        DPRINTF(Loader, "Kernel end   = %#x\n", kernelEnd);
1353812Ssaidi@eecs.umich.edu        DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
1363812Ssaidi@eecs.umich.edu        DPRINTF(Loader, "Kernel loaded...\n");
1373812Ssaidi@eecs.umich.edu    }
1382378SN/A#endif // FULL_SYSTEM
1392378SN/A
1401070SN/A    // increment the number of running systms
141878SN/A    numSystemsRunning++;
1422SN/A}
1432SN/A
1442SN/ASystem::~System()
1452SN/A{
1462378SN/A#if FULL_SYSTEM
1471070SN/A    delete kernelSymtab;
1481070SN/A    delete kernel;
1492378SN/A#else
1502378SN/A    panic("System::fixFuncEventAddr needs to be rewritten "
1512378SN/A          "to work with syscall emulation");
1522378SN/A#endif // FULL_SYSTEM}
1532SN/A}
1542SN/A
1552901Ssaidi@eecs.umich.eduvoid
1564762Snate@binkert.orgSystem::setMemoryMode(Enums::MemoryMode mode)
1572901Ssaidi@eecs.umich.edu{
1582901Ssaidi@eecs.umich.edu    assert(getState() == Drained);
1592901Ssaidi@eecs.umich.edu    memoryMode = mode;
1602901Ssaidi@eecs.umich.edu}
1612901Ssaidi@eecs.umich.edu
1623960Sgblack@eecs.umich.edubool System::breakpoint()
1633960Sgblack@eecs.umich.edu{
1644095Sbinkertn@umich.edu    if (remoteGDB.size())
1654095Sbinkertn@umich.edu        return remoteGDB[0]->breakpoint();
1664095Sbinkertn@umich.edu    return false;
1673960Sgblack@eecs.umich.edu}
1683960Sgblack@eecs.umich.edu
1697445Ssteve.reinhardt@amd.com/**
1707445Ssteve.reinhardt@amd.com * Setting rgdb_wait to a positive integer waits for a remote debugger to
1717445Ssteve.reinhardt@amd.com * connect to that context ID before continuing.  This should really
1727445Ssteve.reinhardt@amd.com   be a parameter on the CPU object or something...
1737445Ssteve.reinhardt@amd.com */
1747445Ssteve.reinhardt@amd.comint rgdb_wait = -1;
1757445Ssteve.reinhardt@amd.com
176180SN/Aint
1775718Shsul@eecs.umich.eduSystem::registerThreadContext(ThreadContext *tc, int assigned)
1782SN/A{
1795712Shsul@eecs.umich.edu    int id;
1805718Shsul@eecs.umich.edu    if (assigned == -1) {
1815718Shsul@eecs.umich.edu        for (id = 0; id < threadContexts.size(); id++) {
1825718Shsul@eecs.umich.edu            if (!threadContexts[id])
1835718Shsul@eecs.umich.edu                break;
1845718Shsul@eecs.umich.edu        }
1855718Shsul@eecs.umich.edu
1865718Shsul@eecs.umich.edu        if (threadContexts.size() <= id)
1875718Shsul@eecs.umich.edu            threadContexts.resize(id + 1);
1885718Shsul@eecs.umich.edu    } else {
1895718Shsul@eecs.umich.edu        if (threadContexts.size() <= assigned)
1905718Shsul@eecs.umich.edu            threadContexts.resize(assigned + 1);
1915718Shsul@eecs.umich.edu        id = assigned;
1921806SN/A    }
1931806SN/A
1942680Sktlim@umich.edu    if (threadContexts[id])
1955823Ssaidi@eecs.umich.edu        fatal("Cannot have two CPUs with the same id (%d)\n", id);
1961806SN/A
1972680Sktlim@umich.edu    threadContexts[id] = tc;
1985714Shsul@eecs.umich.edu    _numContexts++;
1991070SN/A
2005512SMichael.Adler@intel.com    int port = getRemoteGDBPort();
2017445Ssteve.reinhardt@amd.com    if (port) {
2024095Sbinkertn@umich.edu        RemoteGDB *rgdb = new RemoteGDB(this, tc);
2035512SMichael.Adler@intel.com        GDBListener *gdbl = new GDBListener(rgdb, port + id);
2044095Sbinkertn@umich.edu        gdbl->listen();
2057445Ssteve.reinhardt@amd.com
2064095Sbinkertn@umich.edu        if (rgdb_wait != -1 && rgdb_wait == id)
2074095Sbinkertn@umich.edu            gdbl->accept();
2081070SN/A
2094095Sbinkertn@umich.edu        if (remoteGDB.size() <= id) {
2104095Sbinkertn@umich.edu            remoteGDB.resize(id + 1);
2114095Sbinkertn@umich.edu        }
2124095Sbinkertn@umich.edu
2134095Sbinkertn@umich.edu        remoteGDB[id] = rgdb;
2141070SN/A    }
2151070SN/A
2161806SN/A    return id;
217180SN/A}
21875SN/A
2196029Ssteve.reinhardt@amd.comint
2206029Ssteve.reinhardt@amd.comSystem::numRunningContexts()
2216029Ssteve.reinhardt@amd.com{
2226029Ssteve.reinhardt@amd.com    int running = 0;
2236029Ssteve.reinhardt@amd.com    for (int i = 0; i < _numContexts; ++i) {
2246029Ssteve.reinhardt@amd.com        if (threadContexts[i]->status() != ThreadContext::Halted)
2256029Ssteve.reinhardt@amd.com            ++running;
2266029Ssteve.reinhardt@amd.com    }
2276029Ssteve.reinhardt@amd.com    return running;
2286029Ssteve.reinhardt@amd.com}
2296029Ssteve.reinhardt@amd.com
230180SN/Avoid
2311129SN/ASystem::startup()
2321129SN/A{
2335713Shsul@eecs.umich.edu#if FULL_SYSTEM
2342114SN/A    int i;
2352680Sktlim@umich.edu    for (i = 0; i < threadContexts.size(); i++)
2364194Ssaidi@eecs.umich.edu        TheISA::startupCPU(threadContexts[i], i);
2375713Shsul@eecs.umich.edu#endif
2381129SN/A}
2391129SN/A
2401129SN/Avoid
2415713Shsul@eecs.umich.eduSystem::replaceThreadContext(ThreadContext *tc, int context_id)
242180SN/A{
2435713Shsul@eecs.umich.edu    if (context_id >= threadContexts.size()) {
2442680Sktlim@umich.edu        panic("replaceThreadContext: bad id, %d >= %d\n",
2455713Shsul@eecs.umich.edu              context_id, threadContexts.size());
246180SN/A    }
247180SN/A
2485713Shsul@eecs.umich.edu    threadContexts[context_id] = tc;
2495713Shsul@eecs.umich.edu    if (context_id < remoteGDB.size())
2505713Shsul@eecs.umich.edu        remoteGDB[context_id]->replaceThreadContext(tc);
2512SN/A}
2522SN/A
2532378SN/A#if !FULL_SYSTEM
2542378SN/AAddr
2552378SN/ASystem::new_page()
2562378SN/A{
2572378SN/A    Addr return_addr = page_ptr << LogVMPageSize;
2582378SN/A    ++page_ptr;
2593162Ssaidi@eecs.umich.edu    if (return_addr >= physmem->size())
2603162Ssaidi@eecs.umich.edu        fatal("Out of memory, please increase size of physical memory.");
2612378SN/A    return return_addr;
2622378SN/A}
2635795Ssaidi@eecs.umich.edu
2645795Ssaidi@eecs.umich.eduAddr
2655795Ssaidi@eecs.umich.eduSystem::memSize()
2665795Ssaidi@eecs.umich.edu{
2675795Ssaidi@eecs.umich.edu    return physmem->size();
2685795Ssaidi@eecs.umich.edu}
2695795Ssaidi@eecs.umich.edu
2705795Ssaidi@eecs.umich.eduAddr
2715795Ssaidi@eecs.umich.eduSystem::freeMemSize()
2725795Ssaidi@eecs.umich.edu{
2735795Ssaidi@eecs.umich.edu   return physmem->size() - (page_ptr << LogVMPageSize);
2745795Ssaidi@eecs.umich.edu}
2755795Ssaidi@eecs.umich.edu
2762378SN/A#endif
2772378SN/A
2781070SN/Avoid
2791070SN/ASystem::serialize(ostream &os)
2801070SN/A{
2812378SN/A#if FULL_SYSTEM
2821984SN/A    kernelSymtab->serialize("kernel_symtab", os);
2835183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM
2845183Ssaidi@eecs.umich.edu    SERIALIZE_SCALAR(page_ptr);
2855183Ssaidi@eecs.umich.edu#endif
2861070SN/A}
2871070SN/A
2881070SN/A
2891070SN/Avoid
2901070SN/ASystem::unserialize(Checkpoint *cp, const string &section)
2911070SN/A{
2922378SN/A#if FULL_SYSTEM
2931984SN/A    kernelSymtab->unserialize("kernel_symtab", cp, section);
2945183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM
2955183Ssaidi@eecs.umich.edu    UNSERIALIZE_SCALAR(page_ptr);
2965183Ssaidi@eecs.umich.edu#endif
2971070SN/A}
2982SN/A
2992SN/Avoid
3002SN/ASystem::printSystems()
3012SN/A{
3022SN/A    vector<System *>::iterator i = systemList.begin();
3032SN/A    vector<System *>::iterator end = systemList.end();
3042SN/A    for (; i != end; ++i) {
3052SN/A        System *sys = *i;
3062SN/A        cerr << "System " << sys->name() << ": " << hex << sys << endl;
3072SN/A    }
3082SN/A}
3092SN/A
3102SN/Avoid
3112SN/AprintSystems()
3122SN/A{
3132SN/A    System::printSystems();
3142SN/A}
3152SN/A
3162902Ssaidi@eecs.umich.educonst char *System::MemoryModeStrings[3] = {"invalid", "atomic",
3172902Ssaidi@eecs.umich.edu    "timing"};
3182902Ssaidi@eecs.umich.edu
3194762Snate@binkert.org#if !FULL_SYSTEM
3202424SN/A
3214762Snate@binkert.orgSystem *
3224762Snate@binkert.orgSystemParams::create()
3232424SN/A{
3245530Snate@binkert.org    return new System(this);
3252424SN/A}
3262424SN/A
3272424SN/A#endif
328