system.hh revision 6029
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 _numContexts; 91 92 ThreadContext *getThreadContext(int tid) 93 { 94 return threadContexts[tid]; 95 } 96 97 int numContexts() 98 { 99 assert(_numContexts == threadContexts.size()); 100 return _numContexts; 101 } 102 103 /** Return number of running (non-halted) thread contexts in 104 * system. These threads could be Active or Suspended. */ 105 int numRunningContexts(); 106 107#if FULL_SYSTEM 108 Platform *platform; 109 uint64_t init_param; 110 111 /** Port to physical memory used for writing object files into ram at 112 * boot.*/ 113 FunctionalPort functionalPort; 114 VirtualPort virtPort; 115 116 /** kernel symbol table */ 117 SymbolTable *kernelSymtab; 118 119 /** Object pointer for the kernel code */ 120 ObjectFile *kernel; 121 122 /** Begining of kernel code */ 123 Addr kernelStart; 124 125 /** End of kernel code */ 126 Addr kernelEnd; 127 128 /** Entry point in the kernel to start at */ 129 Addr kernelEntry; 130 131#else 132 133 int page_ptr; 134 135 protected: 136 uint64_t next_PID; 137 138 public: 139 uint64_t allocatePID() 140 { 141 return next_PID++; 142 } 143 144 /** Amount of physical memory that is still free */ 145 Addr freeMemSize(); 146 147 /** Amount of physical memory that exists */ 148 Addr memSize(); 149 150 151#endif // FULL_SYSTEM 152 153 protected: 154 Enums::MemoryMode memoryMode; 155 156#if FULL_SYSTEM 157 /** 158 * Fix up an address used to match PCs for hooking simulator 159 * events on to target function executions. See comment in 160 * system.cc for details. 161 */ 162 virtual Addr fixFuncEventAddr(Addr addr) = 0; 163 164 /** 165 * Add a function-based event to the given function, to be looked 166 * up in the specified symbol table. 167 */ 168 template <class T> 169 T *addFuncEvent(SymbolTable *symtab, const char *lbl) 170 { 171 Addr addr = 0; // initialize only to avoid compiler warning 172 173 if (symtab->findAddress(lbl, addr)) { 174 T *ev = new T(&pcEventQueue, lbl, fixFuncEventAddr(addr)); 175 return ev; 176 } 177 178 return NULL; 179 } 180 181 /** Add a function-based event to kernel code. */ 182 template <class T> 183 T *addKernelFuncEvent(const char *lbl) 184 { 185 return addFuncEvent<T>(kernelSymtab, lbl); 186 } 187 188#endif 189 public: 190 std::vector<TheISA::RemoteGDB *> remoteGDB; 191 std::vector<GDBListener *> gdbListen; 192 bool breakpoint(); 193 194 public: 195 typedef SystemParams Params; 196 197 protected: 198 Params *_params; 199 200 public: 201 System(Params *p); 202 ~System(); 203 204 void startup(); 205 206 const Params *params() const { return (const Params *)_params; } 207 208 public: 209 210#if FULL_SYSTEM 211 /** 212 * Returns the addess the kernel starts at. 213 * @return address the kernel starts at 214 */ 215 Addr getKernelStart() const { return kernelStart; } 216 217 /** 218 * Returns the addess the kernel ends at. 219 * @return address the kernel ends at 220 */ 221 Addr getKernelEnd() const { return kernelEnd; } 222 223 /** 224 * Returns the addess the entry point to the kernel code. 225 * @return entry point of the kernel code 226 */ 227 Addr getKernelEntry() const { return kernelEntry; } 228 229#else 230 231 Addr new_page(); 232 233#endif // FULL_SYSTEM 234 235 int registerThreadContext(ThreadContext *tc, int assigned=-1); 236 void replaceThreadContext(ThreadContext *tc, int context_id); 237 238 void serialize(std::ostream &os); 239 void unserialize(Checkpoint *cp, const std::string §ion); 240 241 public: 242 //////////////////////////////////////////// 243 // 244 // STATIC GLOBAL SYSTEM LIST 245 // 246 //////////////////////////////////////////// 247 248 static std::vector<System *> systemList; 249 static int numSystemsRunning; 250 251 static void printSystems(); 252 253 254}; 255 256#endif // __SYSTEM_HH__ 257