172 lines
3.9 KiB
C++
172 lines
3.9 KiB
C++
#include "base/loader/object_file.hh"
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#include "base/loader/symtab.hh"
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#include "base/remote_gdb.hh"
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#include "cpu/exec_context.hh"
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#include "kern/kernel_stats.hh"
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#include "mem/functional/memory_control.hh"
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#include "mem/functional/physical.hh"
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#include "arch/vtophys.hh"
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#include "sim/builder.hh"
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#include "arch/isa_traits.hh"
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#include "sim/byteswap.hh"
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#include "sim/system.hh"
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#include "base/trace.hh"
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using namespace std;
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using namespace TheISA;
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vector<System *> System::systemList;
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int System::numSystemsRunning = 0;
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System::System(Params *p)
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: SimObject(p->name), memctrl(p->memctrl), physmem(p->physmem),
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init_param(p->init_param), numcpus(0), _params(p)
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{
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// add self to global system list
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systemList.push_back(this);
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kernelSymtab = new SymbolTable;
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debugSymbolTable = new SymbolTable;
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/**
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* Load the kernel code into memory
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*/
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// Load kernel code
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kernel = createObjectFile(params()->kernel_path);
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if (kernel == NULL)
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fatal("Could not load kernel file %s", params()->kernel_path);
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// Load program sections into memory
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kernel->loadSections(physmem, true);
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// setup entry points
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kernelStart = kernel->textBase();
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kernelEnd = kernel->bssBase() + kernel->bssSize();
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kernelEntry = kernel->entryPoint();
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// load symbols
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if (!kernel->loadGlobalSymbols(kernelSymtab))
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panic("could not load kernel symbols\n");
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if (!kernel->loadLocalSymbols(kernelSymtab))
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panic("could not load kernel local symbols\n");
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if (!kernel->loadGlobalSymbols(debugSymbolTable))
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panic("could not load kernel symbols\n");
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if (!kernel->loadLocalSymbols(debugSymbolTable))
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panic("could not load kernel local symbols\n");
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DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
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DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
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DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
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DPRINTF(Loader, "Kernel loaded...\n");
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// increment the number of running systms
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numSystemsRunning++;
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}
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System::~System()
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{
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delete kernelSymtab;
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delete kernel;
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}
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int rgdb_wait = -1;
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int
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System::registerExecContext(ExecContext *xc, int id)
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{
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if (id == -1) {
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for (id = 0; id < execContexts.size(); id++) {
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if (!execContexts[id])
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break;
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}
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}
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if (execContexts.size() <= id)
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execContexts.resize(id + 1);
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if (execContexts[id])
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panic("Cannot have two CPUs with the same id (%d)\n", id);
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execContexts[id] = xc;
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numcpus++;
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RemoteGDB *rgdb = new RemoteGDB(this, xc);
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GDBListener *gdbl = new GDBListener(rgdb, 7000 + id);
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gdbl->listen();
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/**
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* Uncommenting this line waits for a remote debugger to connect
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* to the simulator before continuing.
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*/
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if (rgdb_wait != -1 && rgdb_wait == id)
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gdbl->accept();
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if (remoteGDB.size() <= id) {
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remoteGDB.resize(id + 1);
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}
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remoteGDB[id] = rgdb;
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return id;
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}
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void
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System::startup()
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{
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int i;
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for (i = 0; i < execContexts.size(); i++)
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execContexts[i]->activate(0);
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}
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void
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System::replaceExecContext(ExecContext *xc, int id)
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{
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if (id >= execContexts.size()) {
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panic("replaceExecContext: bad id, %d >= %d\n",
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id, execContexts.size());
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}
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execContexts[id] = xc;
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remoteGDB[id]->replaceExecContext(xc);
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}
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void
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System::serialize(ostream &os)
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{
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kernelSymtab->serialize("kernel_symtab", os);
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}
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void
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System::unserialize(Checkpoint *cp, const string §ion)
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{
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kernelSymtab->unserialize("kernel_symtab", cp, section);
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}
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void
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System::printSystems()
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{
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vector<System *>::iterator i = systemList.begin();
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vector<System *>::iterator end = systemList.end();
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for (; i != end; ++i) {
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System *sys = *i;
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cerr << "System " << sys->name() << ": " << hex << sys << endl;
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}
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}
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extern "C"
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void
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printSystems()
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{
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System::printSystems();
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}
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DEFINE_SIM_OBJECT_CLASS_NAME("System", System)
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