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+/*
+ * Copyright (c) 2003-2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Steve Reinhardt
+ * Lisa Hsu
+ * Nathan Binkert
+ * Ali Saidi
+ */
+
+#include "arch/isa_traits.hh"
+#include "base/loader/object_file.hh"
+#include "base/loader/symtab.hh"
+#include "base/trace.hh"
+#include "cpu/thread_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
+ memoryMode(p->mem_mode), _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");
+#endif // FULL_SYSTEM
+
+ // increment the number of running systms
+ numSystemsRunning++;
+}
+
+System::~System()
+{
+#if FULL_SYSTEM
+ delete kernelSymtab;
+ delete kernel;
+#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
+
+
+void
+System::setMemoryMode(MemoryMode mode)
+{
+ assert(getState() == Drained);
+ memoryMode = mode;
+}
+
+int
+System::registerThreadContext(ThreadContext *tc, int id)
+{
+ if (id == -1) {
+ for (id = 0; id < threadContexts.size(); id++) {
+ if (!threadContexts[id])
+ break;
+ }
+ }
+
+ if (threadContexts.size() <= id)
+ threadContexts.resize(id + 1);
+
+ if (threadContexts[id])
+ panic("Cannot have two CPUs with the same id (%d)\n", id);
+
+ threadContexts[id] = tc;
+ numcpus++;
+
+#if FULL_SYSTEM
+ RemoteGDB *rgdb = new RemoteGDB(this, tc);
+ 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 < threadContexts.size(); i++)
+ threadContexts[i]->activate(0);
+}
+
+void
+System::replaceThreadContext(ThreadContext *tc, int id)
+{
+ if (id >= threadContexts.size()) {
+ panic("replaceThreadContext: bad id, %d >= %d\n",
+ id, threadContexts.size());
+ }
+
+ threadContexts[id] = tc;
+#if FULL_SYSTEM
+ remoteGDB[id]->replaceThreadContext(tc);
+#endif // FULL_SYSTEM
+}
+
+#if !FULL_SYSTEM
+Addr
+System::new_page()
+{
+ Addr return_addr = page_ptr << LogVMPageSize;
+ ++page_ptr;
+ return return_addr;
+}
+#endif
+
+void
+System::serialize(ostream &os)
+{
+#if FULL_SYSTEM
+ kernelSymtab->serialize("kernel_symtab", os);
+#endif // FULL_SYSTEM
+}
+
+
+void
+System::unserialize(Checkpoint *cp, const string &section)
+{
+#if FULL_SYSTEM
+ 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;
+ }
+}
+
+void
+printSystems()
+{
+ System::printSystems();
+}
+
+const char *System::MemoryModeStrings[3] = {"invalid", "atomic",
+ "timing"};
+
+#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;
+ SimpleEnumParam<System::MemoryMode> mem_mode;
+
+END_DECLARE_SIM_OBJECT_PARAMS(System)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(System)
+
+ INIT_PARAM(physmem, "physical memory"),
+ INIT_ENUM_PARAM(mem_mode, "Memory Mode, (1=atomic, 2=timing)",
+ System::MemoryModeStrings)
+
+END_INIT_SIM_OBJECT_PARAMS(System)
+
+CREATE_SIM_OBJECT(System)
+{
+ System::Params *p = new System::Params;
+ p->name = getInstanceName();
+ p->physmem = physmem;
+ p->mem_mode = mem_mode;
+ return new System(p);
+}
+
+REGISTER_SIM_OBJECT("System", System)
+
+#endif
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