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-rw-r--r--src/sim/system.cc267
1 files changed, 267 insertions, 0 deletions
diff --git a/src/sim/system.cc b/src/sim/system.cc
new file mode 100644
index 000000000..89f39491e
--- /dev/null
+++ b/src/sim/system.cc
@@ -0,0 +1,267 @@
+#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),
+ functionalPort(p->name + "-fport"),
+ virtPort(p->name + "-vport"),
+#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 &section)
+{
+#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