system.cc revision 2720:695250d6fa42
112244Sgabeblack@google.com/* 212244Sgabeblack@google.com * Copyright (c) 2003-2006 The Regents of The University of Michigan 312244Sgabeblack@google.com * All rights reserved. 412244Sgabeblack@google.com * 512244Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 612244Sgabeblack@google.com * modification, are permitted provided that the following conditions are 712244Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 812244Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 912244Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1012244Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1112244Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1212244Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1312244Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1412244Sgabeblack@google.com * this software without specific prior written permission. 1512244Sgabeblack@google.com * 1612244Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712244Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812244Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912244Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012244Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112244Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212244Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312244Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412244Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512244Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612244Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712244Sgabeblack@google.com * 2812244Sgabeblack@google.com * Authors: Steve Reinhardt 2912244Sgabeblack@google.com * Lisa Hsu 3012244Sgabeblack@google.com * Nathan Binkert 3112244Sgabeblack@google.com * Ali Saidi 3212244Sgabeblack@google.com */ 3312244Sgabeblack@google.com 3412244Sgabeblack@google.com#include "arch/isa_traits.hh" 3512244Sgabeblack@google.com#include "base/loader/object_file.hh" 3612244Sgabeblack@google.com#include "base/loader/symtab.hh" 3712244Sgabeblack@google.com#include "base/trace.hh" 3812244Sgabeblack@google.com#include "cpu/thread_context.hh" 3912244Sgabeblack@google.com#include "mem/mem_object.hh" 4012244Sgabeblack@google.com#include "mem/physical.hh" 4112244Sgabeblack@google.com#include "sim/builder.hh" 4212244Sgabeblack@google.com#include "sim/byteswap.hh" 4312244Sgabeblack@google.com#include "sim/system.hh" 4412244Sgabeblack@google.com#if FULL_SYSTEM 4512244Sgabeblack@google.com#include "arch/vtophys.hh" 4612244Sgabeblack@google.com#include "base/remote_gdb.hh" 4712244Sgabeblack@google.com#include "kern/kernel_stats.hh" 4812244Sgabeblack@google.com#endif 4912244Sgabeblack@google.com 5012244Sgabeblack@google.comusing namespace std; 5112244Sgabeblack@google.comusing namespace TheISA; 5212244Sgabeblack@google.com 5312244Sgabeblack@google.comvector<System *> System::systemList; 5412244Sgabeblack@google.com 5512244Sgabeblack@google.comint System::numSystemsRunning = 0; 5612244Sgabeblack@google.com 5712244Sgabeblack@google.comSystem::System(Params *p) 5812244Sgabeblack@google.com : SimObject(p->name), physmem(p->physmem), numcpus(0), 5912244Sgabeblack@google.com#if FULL_SYSTEM 6012244Sgabeblack@google.com init_param(p->init_param), 6112244Sgabeblack@google.com functionalPort(p->name + "-fport"), 6212244Sgabeblack@google.com virtPort(p->name + "-vport"), 6312244Sgabeblack@google.com#else 6412244Sgabeblack@google.com page_ptr(0), 6512244Sgabeblack@google.com#endif 6612244Sgabeblack@google.com _params(p) 6712244Sgabeblack@google.com{ 6812244Sgabeblack@google.com // add self to global system list 6912244Sgabeblack@google.com systemList.push_back(this); 7012244Sgabeblack@google.com 7112244Sgabeblack@google.com#if FULL_SYSTEM 7212244Sgabeblack@google.com kernelSymtab = new SymbolTable; 7312244Sgabeblack@google.com debugSymbolTable = new SymbolTable; 7412244Sgabeblack@google.com 7512244Sgabeblack@google.com 7612244Sgabeblack@google.com /** 7712244Sgabeblack@google.com * Get a functional port to memory 7812244Sgabeblack@google.com */ 7912244Sgabeblack@google.com Port *mem_port; 8012244Sgabeblack@google.com mem_port = physmem->getPort("functional"); 8112244Sgabeblack@google.com functionalPort.setPeer(mem_port); 8212244Sgabeblack@google.com mem_port->setPeer(&functionalPort); 8312244Sgabeblack@google.com 8412244Sgabeblack@google.com mem_port = physmem->getPort("functional"); 8512244Sgabeblack@google.com virtPort.setPeer(mem_port); 8612244Sgabeblack@google.com mem_port->setPeer(&virtPort); 8712244Sgabeblack@google.com 8812244Sgabeblack@google.com 8912244Sgabeblack@google.com /** 9012244Sgabeblack@google.com * Load the kernel code into memory 9112244Sgabeblack@google.com */ 9212244Sgabeblack@google.com // Load kernel code 9312244Sgabeblack@google.com kernel = createObjectFile(params()->kernel_path); 9412244Sgabeblack@google.com if (kernel == NULL) 9512244Sgabeblack@google.com fatal("Could not load kernel file %s", params()->kernel_path); 9612244Sgabeblack@google.com 9712244Sgabeblack@google.com // Load program sections into memory 9812244Sgabeblack@google.com kernel->loadSections(&functionalPort, LoadAddrMask); 9912244Sgabeblack@google.com 10012244Sgabeblack@google.com // setup entry points 10112244Sgabeblack@google.com kernelStart = kernel->textBase(); 10212244Sgabeblack@google.com kernelEnd = kernel->bssBase() + kernel->bssSize(); 10312244Sgabeblack@google.com kernelEntry = kernel->entryPoint(); 10412244Sgabeblack@google.com 10512244Sgabeblack@google.com // load symbols 10612244Sgabeblack@google.com if (!kernel->loadGlobalSymbols(kernelSymtab)) 10712244Sgabeblack@google.com panic("could not load kernel symbols\n"); 10812244Sgabeblack@google.com 10912244Sgabeblack@google.com if (!kernel->loadLocalSymbols(kernelSymtab)) 11012244Sgabeblack@google.com panic("could not load kernel local symbols\n"); 11112244Sgabeblack@google.com 11212244Sgabeblack@google.com if (!kernel->loadGlobalSymbols(debugSymbolTable)) 11312244Sgabeblack@google.com panic("could not load kernel symbols\n"); 11412244Sgabeblack@google.com 11512244Sgabeblack@google.com if (!kernel->loadLocalSymbols(debugSymbolTable)) 11612244Sgabeblack@google.com panic("could not load kernel local symbols\n"); 11712244Sgabeblack@google.com 11812244Sgabeblack@google.com DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); 11912244Sgabeblack@google.com DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); 12012244Sgabeblack@google.com DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); 12112244Sgabeblack@google.com DPRINTF(Loader, "Kernel loaded...\n"); 12212244Sgabeblack@google.com#endif // FULL_SYSTEM 12312244Sgabeblack@google.com 12412244Sgabeblack@google.com // increment the number of running systms 12512244Sgabeblack@google.com numSystemsRunning++; 12612244Sgabeblack@google.com} 12712244Sgabeblack@google.com 12812244Sgabeblack@google.comSystem::~System() 12912244Sgabeblack@google.com{ 13012244Sgabeblack@google.com#if FULL_SYSTEM 13112244Sgabeblack@google.com delete kernelSymtab; 13212244Sgabeblack@google.com delete kernel; 13312244Sgabeblack@google.com#else 13412244Sgabeblack@google.com panic("System::fixFuncEventAddr needs to be rewritten " 13512244Sgabeblack@google.com "to work with syscall emulation"); 13612244Sgabeblack@google.com#endif // FULL_SYSTEM} 13712244Sgabeblack@google.com} 13812244Sgabeblack@google.com 13912244Sgabeblack@google.com#if FULL_SYSTEM 14012244Sgabeblack@google.com 14112244Sgabeblack@google.com 14212244Sgabeblack@google.comint rgdb_wait = -1; 14312244Sgabeblack@google.com 14412244Sgabeblack@google.com#endif // FULL_SYSTEM 14512244Sgabeblack@google.com 14612244Sgabeblack@google.comint 147System::registerThreadContext(ThreadContext *tc, int id) 148{ 149 if (id == -1) { 150 for (id = 0; id < threadContexts.size(); id++) { 151 if (!threadContexts[id]) 152 break; 153 } 154 } 155 156 if (threadContexts.size() <= id) 157 threadContexts.resize(id + 1); 158 159 if (threadContexts[id]) 160 panic("Cannot have two CPUs with the same id (%d)\n", id); 161 162 threadContexts[id] = tc; 163 numcpus++; 164 165#if FULL_SYSTEM 166 RemoteGDB *rgdb = new RemoteGDB(this, tc); 167 GDBListener *gdbl = new GDBListener(rgdb, 7000 + id); 168 gdbl->listen(); 169 /** 170 * Uncommenting this line waits for a remote debugger to connect 171 * to the simulator before continuing. 172 */ 173 if (rgdb_wait != -1 && rgdb_wait == id) 174 gdbl->accept(); 175 176 if (remoteGDB.size() <= id) { 177 remoteGDB.resize(id + 1); 178 } 179 180 remoteGDB[id] = rgdb; 181#endif // FULL_SYSTEM 182 183 return id; 184} 185 186void 187System::startup() 188{ 189 int i; 190 for (i = 0; i < threadContexts.size(); i++) 191 threadContexts[i]->activate(0); 192} 193 194void 195System::replaceThreadContext(ThreadContext *tc, int id) 196{ 197 if (id >= threadContexts.size()) { 198 panic("replaceThreadContext: bad id, %d >= %d\n", 199 id, threadContexts.size()); 200 } 201 202 threadContexts[id] = tc; 203#if FULL_SYSTEM 204 remoteGDB[id]->replaceThreadContext(tc); 205#endif // FULL_SYSTEM 206} 207 208#if !FULL_SYSTEM 209Addr 210System::new_page() 211{ 212 Addr return_addr = page_ptr << LogVMPageSize; 213 ++page_ptr; 214 return return_addr; 215} 216#endif 217 218void 219System::serialize(ostream &os) 220{ 221#if FULL_SYSTEM 222 kernelSymtab->serialize("kernel_symtab", os); 223#endif // FULL_SYSTEM 224} 225 226 227void 228System::unserialize(Checkpoint *cp, const string §ion) 229{ 230#if FULL_SYSTEM 231 kernelSymtab->unserialize("kernel_symtab", cp, section); 232#endif // FULL_SYSTEM 233} 234 235void 236System::printSystems() 237{ 238 vector<System *>::iterator i = systemList.begin(); 239 vector<System *>::iterator end = systemList.end(); 240 for (; i != end; ++i) { 241 System *sys = *i; 242 cerr << "System " << sys->name() << ": " << hex << sys << endl; 243 } 244} 245 246extern "C" 247void 248printSystems() 249{ 250 System::printSystems(); 251} 252 253#if FULL_SYSTEM 254 255// In full system mode, only derived classes (e.g. AlphaLinuxSystem) 256// can be created directly. 257 258DEFINE_SIM_OBJECT_CLASS_NAME("System", System) 259 260#else 261 262BEGIN_DECLARE_SIM_OBJECT_PARAMS(System) 263 264 SimObjectParam<PhysicalMemory *> physmem; 265 266END_DECLARE_SIM_OBJECT_PARAMS(System) 267 268BEGIN_INIT_SIM_OBJECT_PARAMS(System) 269 270 INIT_PARAM(physmem, "physical memory") 271 272END_INIT_SIM_OBJECT_PARAMS(System) 273 274CREATE_SIM_OBJECT(System) 275{ 276 System::Params *p = new System::Params; 277 p->name = getInstanceName(); 278 p->physmem = physmem; 279 return new System(p); 280} 281 282REGISTER_SIM_OBJECT("System", System) 283 284#endif 285