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/*
* Copyright (c) 2002-2005 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.
*/
#ifndef __SYSTEM_HH__
#define __SYSTEM_HH__
#include <string>
#include <vector>
#include "base/loader/symtab.hh"
#include "base/misc.hh"
#include "base/statistics.hh"
#include "cpu/pc_event.hh"
#include "mem/port.hh"
#include "sim/sim_object.hh"
#if FULL_SYSTEM
#include "kern/system_events.hh"
#endif
class BaseCPU;
class ExecContext;
class MemoryController;
class ObjectFile;
class MemObject;
#if FULL_SYSTEM
class Platform;
class GDBListener;
class RemoteGDB;
namespace Kernel { class Binning; }
#endif
class System : public SimObject
{
public:
MemObject *physmem;
PCEventQueue pcEventQueue;
std::vector<ExecContext *> execContexts;
int numcpus;
int getNumCPUs()
{
if (numcpus != execContexts.size())
panic("cpu array not fully populated!");
return numcpus;
}
#if FULL_SYSTEM
MemoryController *memctrl;
Platform *platform;
uint64_t init_param;
/** Port to physical memory used for writing object files into ram at
* boot.*/
FunctionalPort functionalPort;
/** kernel symbol table */
SymbolTable *kernelSymtab;
/** Object pointer for the kernel code */
ObjectFile *kernel;
/** Begining of kernel code */
Addr kernelStart;
/** End of kernel code */
Addr kernelEnd;
/** Entry point in the kernel to start at */
Addr kernelEntry;
Kernel::Binning *kernelBinning;
#else
int page_ptr;
#endif // FULL_SYSTEM
protected:
#if FULL_SYSTEM
/**
* Fix up an address used to match PCs for hooking simulator
* events on to target function executions. See comment in
* system.cc for details.
*/
virtual Addr fixFuncEventAddr(Addr addr) = 0;
/**
* Add a function-based event to the given function, to be looked
* up in the specified symbol table.
*/
template <class T>
T *System::addFuncEvent(SymbolTable *symtab, const char *lbl)
{
Addr addr = 0; // initialize only to avoid compiler warning
if (symtab->findAddress(lbl, addr)) {
T *ev = new T(&pcEventQueue, lbl, fixFuncEventAddr(addr));
return ev;
}
return NULL;
}
/** Add a function-based event to kernel code. */
template <class T>
T *System::addKernelFuncEvent(const char *lbl)
{
return addFuncEvent<T>(kernelSymtab, lbl);
}
#endif
public:
#if FULL_SYSTEM
std::vector<RemoteGDB *> remoteGDB;
std::vector<GDBListener *> gdbListen;
virtual bool breakpoint() = 0;
#endif // FULL_SYSTEM
public:
struct Params
{
std::string name;
MemObject *physmem;
#if FULL_SYSTEM
Tick boot_cpu_frequency;
MemoryController *memctrl;
uint64_t init_param;
bool bin;
std::vector<std::string> binned_fns;
bool bin_int;
std::string kernel_path;
std::string readfile;
#endif
};
protected:
Params *_params;
public:
System(Params *p);
~System();
void startup();
const Params *params() const { return (const Params *)_params; }
public:
#if FULL_SYSTEM
/**
* Returns the addess the kernel starts at.
* @return address the kernel starts at
*/
Addr getKernelStart() const { return kernelStart; }
/**
* Returns the addess the kernel ends at.
* @return address the kernel ends at
*/
Addr getKernelEnd() const { return kernelEnd; }
/**
* Returns the addess the entry point to the kernel code.
* @return entry point of the kernel code
*/
Addr getKernelEntry() const { return kernelEntry; }
#else
Addr new_page();
#endif // FULL_SYSTEM
int registerExecContext(ExecContext *xc, int xcIndex);
void replaceExecContext(ExecContext *xc, int xcIndex);
void regStats();
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
public:
////////////////////////////////////////////
//
// STATIC GLOBAL SYSTEM LIST
//
////////////////////////////////////////////
static std::vector<System *> systemList;
static int numSystemsRunning;
static void printSystems();
};
#endif // __SYSTEM_HH__
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