/*
+ * Copyright (c) 2011 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
* Copyright (c) 2003-2006 The Regents of The University of Michigan
+ * Copyright (c) 2011 Regents of the University of California
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* Lisa Hsu
* Nathan Binkert
* Ali Saidi
+ * Rick Strong
*/
#include "arch/isa_traits.hh"
+#include "arch/remote_gdb.hh"
+#include "arch/utility.hh"
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "base/trace.hh"
+#include "config/full_system.hh"
+#include "config/the_isa.hh"
#include "cpu/thread_context.hh"
+#include "debug/Loader.hh"
+#include "debug/WorkItems.hh"
#include "mem/mem_object.hh"
#include "mem/physical.hh"
-#include "sim/builder.hh"
#include "sim/byteswap.hh"
+#include "sim/debug.hh"
#include "sim/system.hh"
+
#if FULL_SYSTEM
#include "arch/vtophys.hh"
-#include "base/remote_gdb.hh"
#include "kern/kernel_stats.hh"
+#include "mem/vport.hh"
+#else
+#include "params/System.hh"
#endif
using namespace std;
int System::numSystemsRunning = 0;
System::System(Params *p)
- : SimObject(p->name), physmem(p->physmem), numcpus(0),
+ : SimObject(p), physmem(p->physmem), _numContexts(0),
#if FULL_SYSTEM
init_param(p->init_param),
- functionalPort(p->name + "-fport"),
- virtPort(p->name + "-vport"),
+ loadAddrMask(p->load_addr_mask),
#else
- page_ptr(0),
+ pagePtr(0),
+ nextPID(0),
#endif
- _params(p)
+ memoryMode(p->mem_mode),
+ workItemsBegin(0),
+ workItemsEnd(0),
+ numWorkIds(p->num_work_ids),
+ _params(p),
+ totalNumInsts(0),
+ instEventQueue("system instruction-based event queue")
{
// add self to global system list
systemList.push_back(this);
+ /** Keep track of all memories we can execute code out of
+ * in our system
+ */
+ for (int x = 0; x < p->memories.size(); x++) {
+ if (!p->memories[x])
+ continue;
+ memRanges.push_back(RangeSize(p->memories[x]->start(),
+ p->memories[x]->size()));
+ }
+
#if FULL_SYSTEM
kernelSymtab = new SymbolTable;
- debugSymbolTable = new SymbolTable;
+ if (!debugSymbolTable)
+ debugSymbolTable = new SymbolTable;
/**
* Get a functional port to memory
*/
Port *mem_port;
+ functionalPort = new FunctionalPort(name() + "-fport");
mem_port = physmem->getPort("functional");
- functionalPort.setPeer(mem_port);
- mem_port->setPeer(&functionalPort);
+ functionalPort->setPeer(mem_port);
+ mem_port->setPeer(functionalPort);
+ virtPort = new VirtualPort(name() + "-fport");
mem_port = physmem->getPort("functional");
- virtPort.setPeer(mem_port);
- mem_port->setPeer(&virtPort);
+ 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");
+ if (params()->kernel == "") {
+ inform("No kernel set for full system simulation. Assuming you know what"
+ " you're doing...\n");
+ } else {
+ // Load kernel code
+ kernel = createObjectFile(params()->kernel);
+ inform("kernel located at: %s", params()->kernel);
+
+ if (kernel == NULL)
+ fatal("Could not load kernel file %s", params()->kernel);
+
+ // 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))
+ fatal("could not load kernel symbols\n");
+
+ if (!kernel->loadLocalSymbols(kernelSymtab))
+ fatal("could not load kernel local symbols\n");
+
+ if (!kernel->loadGlobalSymbols(debugSymbolTable))
+ fatal("could not load kernel symbols\n");
+
+ if (!kernel->loadLocalSymbols(debugSymbolTable))
+ fatal("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++;
+
+ activeCpus.clear();
}
System::~System()
panic("System::fixFuncEventAddr needs to be rewritten "
"to work with syscall emulation");
#endif // FULL_SYSTEM}
+
+ for (uint32_t j = 0; j < numWorkIds; j++)
+ delete workItemStats[j];
}
-#if FULL_SYSTEM
+void
+System::setMemoryMode(Enums::MemoryMode mode)
+{
+ assert(getState() == Drained);
+ memoryMode = mode;
+}
+bool System::breakpoint()
+{
+ if (remoteGDB.size())
+ return remoteGDB[0]->breakpoint();
+ return false;
+}
+/**
+ * Setting rgdb_wait to a positive integer waits for a remote debugger to
+ * connect to that context ID before continuing. This should really
+ be a parameter on the CPU object or something...
+ */
int rgdb_wait = -1;
-#endif // FULL_SYSTEM
-
int
-System::registerThreadContext(ThreadContext *tc, int id)
+System::registerThreadContext(ThreadContext *tc, int assigned)
{
- if (id == -1) {
+ int id;
+ if (assigned == -1) {
for (id = 0; id < threadContexts.size(); id++) {
if (!threadContexts[id])
break;
}
- }
- if (threadContexts.size() <= id)
- threadContexts.resize(id + 1);
+ if (threadContexts.size() <= id)
+ threadContexts.resize(id + 1);
+ } else {
+ if (threadContexts.size() <= assigned)
+ threadContexts.resize(assigned + 1);
+ id = assigned;
+ }
if (threadContexts[id])
- panic("Cannot have two CPUs with the same id (%d)\n", id);
+ fatal("Cannot have two CPUs with the same id (%d)\n", id);
threadContexts[id] = tc;
- numcpus++;
+ _numContexts++;
-#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();
+ int port = getRemoteGDBPort();
+ if (port) {
+ RemoteGDB *rgdb = new RemoteGDB(this, tc);
+ GDBListener *gdbl = new GDBListener(rgdb, port + id);
+ gdbl->listen();
+
+ if (rgdb_wait != -1 && rgdb_wait == id)
+ gdbl->accept();
+
+ if (remoteGDB.size() <= id) {
+ remoteGDB.resize(id + 1);
+ }
- if (remoteGDB.size() <= id) {
- remoteGDB.resize(id + 1);
+ remoteGDB[id] = rgdb;
}
- remoteGDB[id] = rgdb;
-#endif // FULL_SYSTEM
+ activeCpus.push_back(false);
return id;
}
+int
+System::numRunningContexts()
+{
+ int running = 0;
+ for (int i = 0; i < _numContexts; ++i) {
+ if (threadContexts[i]->status() != ThreadContext::Halted)
+ ++running;
+ }
+ return running;
+}
+
void
-System::startup()
+System::initState()
{
+#if FULL_SYSTEM
int i;
for (i = 0; i < threadContexts.size(); i++)
- threadContexts[i]->activate(0);
+ TheISA::startupCPU(threadContexts[i], i);
+#endif
}
void
-System::replaceThreadContext(ThreadContext *tc, int id)
+System::replaceThreadContext(ThreadContext *tc, int context_id)
{
- if (id >= threadContexts.size()) {
+ if (context_id >= threadContexts.size()) {
panic("replaceThreadContext: bad id, %d >= %d\n",
- id, threadContexts.size());
+ context_id, threadContexts.size());
}
- threadContexts[id] = tc;
-#if FULL_SYSTEM
- remoteGDB[id]->replaceThreadContext(tc);
-#endif // FULL_SYSTEM
+ threadContexts[context_id] = tc;
+ if (context_id < remoteGDB.size())
+ remoteGDB[context_id]->replaceThreadContext(tc);
}
#if !FULL_SYSTEM
Addr
-System::new_page()
+System::allocPhysPages(int npages)
{
- Addr return_addr = page_ptr << LogVMPageSize;
- ++page_ptr;
+ Addr return_addr = pagePtr << LogVMPageSize;
+ pagePtr += npages;
+ if (return_addr >= physmem->size())
+ fatal("Out of memory, please increase size of physical memory.");
return return_addr;
}
+
+Addr
+System::memSize()
+{
+ return physmem->size();
+}
+
+Addr
+System::freeMemSize()
+{
+ return physmem->size() - (pagePtr << LogVMPageSize);
+}
+
#endif
+bool
+System::isMemory(const Addr addr) const
+{
+ std::list<Range<Addr> >::const_iterator i;
+ for (i = memRanges.begin(); i != memRanges.end(); i++) {
+ if (*i == addr)
+ return true;
+ }
+ return false;
+}
+
+void
+System::resume()
+{
+ SimObject::resume();
+ totalNumInsts = 0;
+}
+
void
System::serialize(ostream &os)
{
#if FULL_SYSTEM
kernelSymtab->serialize("kernel_symtab", os);
-#endif // FULL_SYSTEM
+#else // !FULL_SYSTEM
+ SERIALIZE_SCALAR(pagePtr);
+ SERIALIZE_SCALAR(nextPID);
+#endif
}
{
#if FULL_SYSTEM
kernelSymtab->unserialize("kernel_symtab", cp, section);
-#endif // FULL_SYSTEM
+#else // !FULL_SYSTEM
+ UNSERIALIZE_SCALAR(pagePtr);
+ UNSERIALIZE_SCALAR(nextPID);
+#endif
+}
+
+void
+System::regStats()
+{
+ for (uint32_t j = 0; j < numWorkIds ; j++) {
+ workItemStats[j] = new Stats::Histogram();
+ stringstream namestr;
+ ccprintf(namestr, "work_item_type%d", j);
+ workItemStats[j]->init(20)
+ .name(name() + "." + namestr.str())
+ .desc("Run time stat for" + namestr.str())
+ .prereq(*workItemStats[j]);
+ }
+}
+
+void
+System::workItemEnd(uint32_t tid, uint32_t workid)
+{
+ std::pair<uint32_t,uint32_t> p(tid, workid);
+ if (!lastWorkItemStarted.count(p))
+ return;
+
+ Tick samp = curTick() - lastWorkItemStarted[p];
+ DPRINTF(WorkItems, "Work item end: %d\t%d\t%lld\n", tid, workid, samp);
+
+ if (workid >= numWorkIds)
+ fatal("Got workid greater than specified in system configuration\n");
+
+ workItemStats[workid]->sample(samp);
+ lastWorkItemStarted.erase(p);
}
void
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;
+const char *System::MemoryModeStrings[3] = {"invalid", "atomic",
+ "timing"};
-END_DECLARE_SIM_OBJECT_PARAMS(System)
-
-BEGIN_INIT_SIM_OBJECT_PARAMS(System)
-
- INIT_PARAM(physmem, "physical memory")
-
-END_INIT_SIM_OBJECT_PARAMS(System)
+#if !FULL_SYSTEM
-CREATE_SIM_OBJECT(System)
+System *
+SystemParams::create()
{
- System::Params *p = new System::Params;
- p->name = getInstanceName();
- p->physmem = physmem;
- return new System(p);
+ return new System(this);
}
-REGISTER_SIM_OBJECT("System", System)
-
#endif
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