1/* 2 * Copyright (c) 2003-2006 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 * Ali Saidi 32 */ 33 34#include "arch/isa_traits.hh" 35#include "base/loader/object_file.hh" 36#include "base/loader/symtab.hh" 37#include "base/trace.hh" 38#include "cpu/thread_context.hh" 39#include "mem/mem_object.hh" 40#include "mem/physical.hh" 41#include "sim/builder.hh" 42#include "sim/byteswap.hh" 43#include "sim/system.hh" 44#if FULL_SYSTEM 45#include "arch/vtophys.hh" 46#include "base/remote_gdb.hh" 47#include "kern/kernel_stats.hh" 48#endif 49 50using namespace std; 51using namespace TheISA; 52 53vector<System *> System::systemList; 54 55int System::numSystemsRunning = 0; 56 57System::System(Params *p) 58 : SimObject(p->name), physmem(p->physmem), numcpus(0), 59#if FULL_SYSTEM 60 init_param(p->init_param), 61 functionalPort(p->name + "-fport"), 62 virtPort(p->name + "-vport"), 63#else 64 page_ptr(0), 65#endif 66 _params(p) 67{ 68 // add self to global system list 69 systemList.push_back(this); 70 71#if FULL_SYSTEM 72 kernelSymtab = new SymbolTable; 73 debugSymbolTable = new SymbolTable; 74 75 76 /** 77 * Get a functional port to memory 78 */ 79 Port *mem_port; 80 mem_port = physmem->getPort("functional"); 81 functionalPort.setPeer(mem_port); 82 mem_port->setPeer(&functionalPort); 83 84 mem_port = physmem->getPort("functional"); 85 virtPort.setPeer(mem_port); 86 mem_port->setPeer(&virtPort); 87 88 89 /** 90 * Load the kernel code into memory 91 */ 92 // Load kernel code 93 kernel = createObjectFile(params()->kernel_path); 94 if (kernel == NULL) 95 fatal("Could not load kernel file %s", params()->kernel_path); 96 97 // Load program sections into memory 98 kernel->loadSections(&functionalPort, LoadAddrMask); 99 100 // setup entry points 101 kernelStart = kernel->textBase(); 102 kernelEnd = kernel->bssBase() + kernel->bssSize(); 103 kernelEntry = kernel->entryPoint(); 104 105 // load symbols 106 if (!kernel->loadGlobalSymbols(kernelSymtab)) 107 panic("could not load kernel symbols\n"); 108 109 if (!kernel->loadLocalSymbols(kernelSymtab)) 110 panic("could not load kernel local symbols\n"); 111 112 if (!kernel->loadGlobalSymbols(debugSymbolTable)) 113 panic("could not load kernel symbols\n"); 114 115 if (!kernel->loadLocalSymbols(debugSymbolTable)) 116 panic("could not load kernel local symbols\n"); 117 118 DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); 119 DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); 120 DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); 121 DPRINTF(Loader, "Kernel loaded...\n"); 122 123 kernelBinning = new Kernel::Binning(this); 124#endif // FULL_SYSTEM 125 126 // increment the number of running systms 127 numSystemsRunning++; 128} 129 130System::~System() 131{ 132#if FULL_SYSTEM 133 delete kernelSymtab; 134 delete kernel; |
135#else 136 panic("System::fixFuncEventAddr needs to be rewritten " 137 "to work with syscall emulation"); 138#endif // FULL_SYSTEM} 139} 140 141#if FULL_SYSTEM 142 143 144int rgdb_wait = -1; 145 146#endif // FULL_SYSTEM 147 148int 149System::registerThreadContext(ThreadContext *tc, int id) 150{ 151 if (id == -1) { 152 for (id = 0; id < threadContexts.size(); id++) { 153 if (!threadContexts[id]) 154 break; 155 } 156 } 157 158 if (threadContexts.size() <= id) 159 threadContexts.resize(id + 1); 160 161 if (threadContexts[id]) 162 panic("Cannot have two CPUs with the same id (%d)\n", id); 163 164 threadContexts[id] = tc; 165 numcpus++; 166 167#if FULL_SYSTEM 168 RemoteGDB *rgdb = new RemoteGDB(this, tc); 169 GDBListener *gdbl = new GDBListener(rgdb, 7000 + id); 170 gdbl->listen(); 171 /** 172 * Uncommenting this line waits for a remote debugger to connect 173 * to the simulator before continuing. 174 */ 175 if (rgdb_wait != -1 && rgdb_wait == id) 176 gdbl->accept(); 177 178 if (remoteGDB.size() <= id) { 179 remoteGDB.resize(id + 1); 180 } 181 182 remoteGDB[id] = rgdb; 183#endif // FULL_SYSTEM 184 185 return id; 186} 187 188void 189System::startup() 190{ 191 int i; 192 for (i = 0; i < threadContexts.size(); i++) 193 threadContexts[i]->activate(0); 194} 195 196void 197System::replaceThreadContext(ThreadContext *tc, int id) 198{ 199 if (id >= threadContexts.size()) { 200 panic("replaceThreadContext: bad id, %d >= %d\n", 201 id, threadContexts.size()); 202 } 203 204 threadContexts[id] = tc; 205#if FULL_SYSTEM 206 remoteGDB[id]->replaceThreadContext(tc); 207#endif // FULL_SYSTEM 208} 209 210#if !FULL_SYSTEM 211Addr 212System::new_page() 213{ 214 Addr return_addr = page_ptr << LogVMPageSize; 215 ++page_ptr; 216 return return_addr; 217} 218#endif 219 220void |
221System::serialize(ostream &os) 222{ 223#if FULL_SYSTEM |
224 kernelSymtab->serialize("kernel_symtab", os); 225#endif // FULL_SYSTEM 226} 227 228 229void 230System::unserialize(Checkpoint *cp, const string §ion) 231{ 232#if FULL_SYSTEM |
233 kernelSymtab->unserialize("kernel_symtab", cp, section); 234#endif // FULL_SYSTEM 235} 236 237void 238System::printSystems() 239{ 240 vector<System *>::iterator i = systemList.begin(); 241 vector<System *>::iterator end = systemList.end(); 242 for (; i != end; ++i) { 243 System *sys = *i; 244 cerr << "System " << sys->name() << ": " << hex << sys << endl; 245 } 246} 247 248extern "C" 249void 250printSystems() 251{ 252 System::printSystems(); 253} 254 255#if FULL_SYSTEM 256 257// In full system mode, only derived classes (e.g. AlphaLinuxSystem) 258// can be created directly. 259 260DEFINE_SIM_OBJECT_CLASS_NAME("System", System) 261 262#else 263 264BEGIN_DECLARE_SIM_OBJECT_PARAMS(System) 265 266 SimObjectParam<PhysicalMemory *> physmem; 267 268END_DECLARE_SIM_OBJECT_PARAMS(System) 269 270BEGIN_INIT_SIM_OBJECT_PARAMS(System) 271 272 INIT_PARAM(physmem, "physical memory") 273 274END_INIT_SIM_OBJECT_PARAMS(System) 275 276CREATE_SIM_OBJECT(System) 277{ 278 System::Params *p = new System::Params; 279 p->name = getInstanceName(); 280 p->physmem = physmem; 281 return new System(p); 282} 283 284REGISTER_SIM_OBJECT("System", System) 285 286#endif |