| /* |
| * 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. |
| * |
| * Authors: Steve Reinhardt |
| * Lisa Hsu |
| * Nathan Binkert |
| */ |
| |
| #ifndef __SYSTEM_HH__ |
| #define __SYSTEM_HH__ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/loader/symtab.hh" |
| #include "base/misc.hh" |
| #include "base/statistics.hh" |
| #include "config/full_system.hh" |
| #include "cpu/pc_event.hh" |
| #include "enums/MemoryMode.hh" |
| #include "mem/port.hh" |
| #include "params/System.hh" |
| #include "sim/sim_object.hh" |
| #if FULL_SYSTEM |
| #include "kern/system_events.hh" |
| #include "mem/vport.hh" |
| #endif |
| |
| class BaseCPU; |
| class ThreadContext; |
| class ObjectFile; |
| class PhysicalMemory; |
| |
| #if FULL_SYSTEM |
| class Platform; |
| #endif |
| class GDBListener; |
| namespace TheISA |
| { |
| class RemoteGDB; |
| } |
| |
| class System : public SimObject |
| { |
| public: |
| |
| static const char *MemoryModeStrings[3]; |
| |
| Enums::MemoryMode |
| getMemoryMode() |
| { |
| assert(memoryMode); |
| return memoryMode; |
| } |
| |
| /** Change the memory mode of the system. This should only be called by the |
| * python!! |
| * @param mode Mode to change to (atomic/timing) |
| */ |
| void setMemoryMode(Enums::MemoryMode mode); |
| |
| PhysicalMemory *physmem; |
| PCEventQueue pcEventQueue; |
| |
| std::vector<ThreadContext *> threadContexts; |
| int _numContexts; |
| |
| ThreadContext *getThreadContext(ThreadID tid) |
| { |
| return threadContexts[tid]; |
| } |
| |
| int numContexts() |
| { |
| assert(_numContexts == (int)threadContexts.size()); |
| return _numContexts; |
| } |
| |
| /** Return number of running (non-halted) thread contexts in |
| * system. These threads could be Active or Suspended. */ |
| int numRunningContexts(); |
| |
| #if FULL_SYSTEM |
| Platform *platform; |
| uint64_t init_param; |
| |
| /** Port to physical memory used for writing object files into ram at |
| * boot.*/ |
| FunctionalPort functionalPort; |
| VirtualPort virtPort; |
| |
| /** 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; |
| |
| #else |
| |
| int page_ptr; |
| |
| protected: |
| uint64_t next_PID; |
| |
| public: |
| uint64_t allocatePID() |
| { |
| return next_PID++; |
| } |
| |
| /** Amount of physical memory that is still free */ |
| Addr freeMemSize(); |
| |
| /** Amount of physical memory that exists */ |
| Addr memSize(); |
| |
| |
| #endif // FULL_SYSTEM |
| |
| protected: |
| Enums::MemoryMode memoryMode; |
| |
| #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 *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 *addKernelFuncEvent(const char *lbl) |
| { |
| return addFuncEvent<T>(kernelSymtab, lbl); |
| } |
| |
| #endif |
| public: |
| std::vector<TheISA::RemoteGDB *> remoteGDB; |
| std::vector<GDBListener *> gdbListen; |
| bool breakpoint(); |
| |
| public: |
| typedef SystemParams Params; |
| |
| 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 registerThreadContext(ThreadContext *tc, int assigned=-1); |
| void replaceThreadContext(ThreadContext *tc, int context_id); |
| |
| 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__ |