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#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "cpu/exec_context.hh"
#include "sim/builder.hh"
#include "arch/isa_traits.hh"
#include "sim/byteswap.hh"
#include "sim/system.hh"
#include "base/trace.hh"
#include "mem/mem_object.hh"
#if FULL_SYSTEM
#include "base/remote_gdb.hh"
#include "kern/kernel_stats.hh"
#include "mem/functional/memory_control.hh"
#include "arch/vtophys.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
memctrl(p->memctrl), 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;
/**
* 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(physmem, true);
// 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<MemObject *> 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
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