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Diffstat (limited to 'src/sim/system.cc')
| -rw-r--r-- | src/sim/system.cc | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/src/sim/system.cc b/src/sim/system.cc new file mode 100644 index 000000000..ca9d68d77 --- /dev/null +++ b/src/sim/system.cc @@ -0,0 +1,265 @@ +#include "arch/isa_traits.hh" +#include "base/loader/object_file.hh" +#include "base/loader/symtab.hh" +#include "base/trace.hh" +#include "cpu/exec_context.hh" +#include "mem/mem_object.hh" +#include "mem/physical.hh" +#include "sim/builder.hh" +#include "sim/byteswap.hh" +#include "sim/system.hh" +#if FULL_SYSTEM +#include "arch/vtophys.hh" +#include "base/remote_gdb.hh" +#include "kern/kernel_stats.hh" +#endif + +using namespace std; +using namespace TheISA; + +vector<System *> System::systemList; + +int System::numSystemsRunning = 0; + +System::System(Params *p) + : SimObject(p->name), physmem(p->physmem), numcpus(0), +#if FULL_SYSTEM + init_param(p->init_param), +#else + page_ptr(0), +#endif + _params(p) +{ + // add self to global system list + systemList.push_back(this); + +#if FULL_SYSTEM + kernelSymtab = new SymbolTable; + debugSymbolTable = new SymbolTable; + + + /** + * Get a functional port to memory + */ + Port *mem_port; + mem_port = physmem->getPort("functional"); + functionalPort.setPeer(mem_port); + mem_port->setPeer(&functionalPort); + + mem_port = physmem->getPort("functional"); + virtPort.setPeer(mem_port); + mem_port->setPeer(&virtPort); + + + /** + * Load the kernel code into memory + */ + // Load kernel code + kernel = createObjectFile(params()->kernel_path); + if (kernel == NULL) + fatal("Could not load kernel file %s", params()->kernel_path); + + // Load program sections into memory + kernel->loadSections(&functionalPort, LoadAddrMask); + + // setup entry points + kernelStart = kernel->textBase(); + kernelEnd = kernel->bssBase() + kernel->bssSize(); + kernelEntry = kernel->entryPoint(); + + // load symbols + if (!kernel->loadGlobalSymbols(kernelSymtab)) + panic("could not load kernel symbols\n"); + + if (!kernel->loadLocalSymbols(kernelSymtab)) + panic("could not load kernel local symbols\n"); + + if (!kernel->loadGlobalSymbols(debugSymbolTable)) + panic("could not load kernel symbols\n"); + + if (!kernel->loadLocalSymbols(debugSymbolTable)) + panic("could not load kernel local symbols\n"); + + DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); + DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); + DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); + DPRINTF(Loader, "Kernel loaded...\n"); + + kernelBinning = new Kernel::Binning(this); +#endif // FULL_SYSTEM + + // increment the number of running systms + numSystemsRunning++; +} + +System::~System() +{ +#if FULL_SYSTEM + delete kernelSymtab; + delete kernel; + + delete kernelBinning; +#else + panic("System::fixFuncEventAddr needs to be rewritten " + "to work with syscall emulation"); +#endif // FULL_SYSTEM} +} + +#if FULL_SYSTEM + + +int rgdb_wait = -1; + +#endif // FULL_SYSTEM + +int +System::registerExecContext(ExecContext *xc, int id) +{ + if (id == -1) { + for (id = 0; id < execContexts.size(); id++) { + if (!execContexts[id]) + break; + } + } + + if (execContexts.size() <= id) + execContexts.resize(id + 1); + + if (execContexts[id]) + panic("Cannot have two CPUs with the same id (%d)\n", id); + + execContexts[id] = xc; + numcpus++; + +#if FULL_SYSTEM + RemoteGDB *rgdb = new RemoteGDB(this, xc); + GDBListener *gdbl = new GDBListener(rgdb, 7000 + id); + gdbl->listen(); + /** + * Uncommenting this line waits for a remote debugger to connect + * to the simulator before continuing. + */ + if (rgdb_wait != -1 && rgdb_wait == id) + gdbl->accept(); + + if (remoteGDB.size() <= id) { + remoteGDB.resize(id + 1); + } + + remoteGDB[id] = rgdb; +#endif // FULL_SYSTEM + + return id; +} + +void +System::startup() +{ + int i; + for (i = 0; i < execContexts.size(); i++) + execContexts[i]->activate(0); +} + +void +System::replaceExecContext(ExecContext *xc, int id) +{ + if (id >= execContexts.size()) { + panic("replaceExecContext: bad id, %d >= %d\n", + id, execContexts.size()); + } + + execContexts[id] = xc; +#if FULL_SYSTEM + remoteGDB[id]->replaceExecContext(xc); +#endif // FULL_SYSTEM +} + +#if !FULL_SYSTEM +Addr +System::new_page() +{ + Addr return_addr = page_ptr << LogVMPageSize; + ++page_ptr; + return return_addr; +} +#endif + +void +System::regStats() +{ +#if FULL_SYSTEM + kernelBinning->regStats(name() + ".kern"); +#endif // FULL_SYSTEM +} + +void +System::serialize(ostream &os) +{ +#if FULL_SYSTEM + kernelBinning->serialize(os); + + kernelSymtab->serialize("kernel_symtab", os); +#endif // FULL_SYSTEM +} + + +void +System::unserialize(Checkpoint *cp, const string §ion) +{ +#if FULL_SYSTEM + kernelBinning->unserialize(cp, section); + + kernelSymtab->unserialize("kernel_symtab", cp, section); +#endif // FULL_SYSTEM +} + +void +System::printSystems() +{ + vector<System *>::iterator i = systemList.begin(); + vector<System *>::iterator end = systemList.end(); + for (; i != end; ++i) { + System *sys = *i; + cerr << "System " << sys->name() << ": " << hex << sys << endl; + } +} + +extern "C" +void +printSystems() +{ + System::printSystems(); +} + +#if FULL_SYSTEM + +// In full system mode, only derived classes (e.g. AlphaLinuxSystem) +// can be created directly. + +DEFINE_SIM_OBJECT_CLASS_NAME("System", System) + +#else + +BEGIN_DECLARE_SIM_OBJECT_PARAMS(System) + + SimObjectParam<PhysicalMemory *> physmem; + +END_DECLARE_SIM_OBJECT_PARAMS(System) + +BEGIN_INIT_SIM_OBJECT_PARAMS(System) + + INIT_PARAM(physmem, "physical memory") + +END_INIT_SIM_OBJECT_PARAMS(System) + +CREATE_SIM_OBJECT(System) +{ + System::Params *p = new System::Params; + p->name = getInstanceName(); + p->physmem = physmem; + return new System(p); +} + +REGISTER_SIM_OBJECT("System", System) + +#endif |