system.hh revision 5712
1/* 2 * Copyright (c) 2002-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Steve Reinhardt 29 * Lisa Hsu 30 * Nathan Binkert 31 */ 32 33#ifndef __SYSTEM_HH__ 34#define __SYSTEM_HH__ 35 36#include <string> 37#include <vector> 38 39#include "base/loader/symtab.hh" 40#include "base/misc.hh" 41#include "base/statistics.hh" 42#include "config/full_system.hh" 43#include "cpu/pc_event.hh" 44#include "enums/MemoryMode.hh" 45#include "mem/port.hh" 46#include "params/System.hh" 47#include "sim/sim_object.hh" 48#if FULL_SYSTEM 49#include "kern/system_events.hh" 50#include "mem/vport.hh" 51#endif 52 53class BaseCPU; 54class ThreadContext; 55class ObjectFile; 56class PhysicalMemory; 57 58#if FULL_SYSTEM 59class Platform; 60#endif 61class GDBListener; 62namespace TheISA 63{ 64 class RemoteGDB; 65} 66 67class System : public SimObject 68{ 69 public: 70 71 static const char *MemoryModeStrings[3]; 72 73 Enums::MemoryMode 74 getMemoryMode() 75 { 76 assert(memoryMode); 77 return memoryMode; 78 } 79 80 /** Change the memory mode of the system. This should only be called by the 81 * python!! 82 * @param mode Mode to change to (atomic/timing) 83 */ 84 void setMemoryMode(Enums::MemoryMode mode); 85 86 PhysicalMemory *physmem; 87 PCEventQueue pcEventQueue; 88 89 std::vector<ThreadContext *> threadContexts; 90 int numcpus; 91 92 int getNumCPUs() 93 { 94 if (numcpus != threadContexts.size()) 95 panic("cpu array not fully populated!"); 96 97 return numcpus; 98 } 99 100#if FULL_SYSTEM 101 Platform *platform; 102 uint64_t init_param; 103 104 /** Port to physical memory used for writing object files into ram at 105 * boot.*/ 106 FunctionalPort functionalPort; 107 VirtualPort virtPort; 108 109 /** kernel symbol table */ 110 SymbolTable *kernelSymtab; 111 112 /** Object pointer for the kernel code */ 113 ObjectFile *kernel; 114 115 /** Begining of kernel code */ 116 Addr kernelStart; 117 118 /** End of kernel code */ 119 Addr kernelEnd; 120 121 /** Entry point in the kernel to start at */ 122 Addr kernelEntry; 123 124#else 125 126 int page_ptr; 127 128 protected: 129 uint64_t next_PID; 130 131 public: 132 uint64_t allocatePID() 133 { 134 return next_PID++; 135 } 136 137 138#endif // FULL_SYSTEM 139 140 protected: 141 Enums::MemoryMode memoryMode; 142 143#if FULL_SYSTEM 144 /** 145 * Fix up an address used to match PCs for hooking simulator 146 * events on to target function executions. See comment in 147 * system.cc for details. 148 */ 149 virtual Addr fixFuncEventAddr(Addr addr) = 0; 150 151 /** 152 * Add a function-based event to the given function, to be looked 153 * up in the specified symbol table. 154 */ 155 template <class T> 156 T *addFuncEvent(SymbolTable *symtab, const char *lbl) 157 { 158 Addr addr = 0; // initialize only to avoid compiler warning 159 160 if (symtab->findAddress(lbl, addr)) { 161 T *ev = new T(&pcEventQueue, lbl, fixFuncEventAddr(addr)); 162 return ev; 163 } 164 165 return NULL; 166 } 167 168 /** Add a function-based event to kernel code. */ 169 template <class T> 170 T *addKernelFuncEvent(const char *lbl) 171 { 172 return addFuncEvent<T>(kernelSymtab, lbl); 173 } 174 175#endif 176 public: 177 std::vector<TheISA::RemoteGDB *> remoteGDB; 178 std::vector<GDBListener *> gdbListen; 179 bool breakpoint(); 180 181 public: 182 typedef SystemParams Params; 183 184 protected: 185 Params *_params; 186 187 public: 188 System(Params *p); 189 ~System(); 190 191 void startup(); 192 193 const Params *params() const { return (const Params *)_params; } 194 195 public: 196 197#if FULL_SYSTEM 198 /** 199 * Returns the addess the kernel starts at. 200 * @return address the kernel starts at 201 */ 202 Addr getKernelStart() const { return kernelStart; } 203 204 /** 205 * Returns the addess the kernel ends at. 206 * @return address the kernel ends at 207 */ 208 Addr getKernelEnd() const { return kernelEnd; } 209 210 /** 211 * Returns the addess the entry point to the kernel code. 212 * @return entry point of the kernel code 213 */ 214 Addr getKernelEntry() const { return kernelEntry; } 215 216#else 217 218 Addr new_page(); 219 220#endif // FULL_SYSTEM 221 222 int registerThreadContext(ThreadContext *tc); 223 void replaceThreadContext(ThreadContext *tc, int tcIndex); 224 225 void serialize(std::ostream &os); 226 void unserialize(Checkpoint *cp, const std::string §ion); 227 228 public: 229 //////////////////////////////////////////// 230 // 231 // STATIC GLOBAL SYSTEM LIST 232 // 233 //////////////////////////////////////////// 234 235 static std::vector<System *> systemList; 236 static int numSystemsRunning; 237 238 static void printSystems(); 239 240 241}; 242 243#endif // __SYSTEM_HH__ 244