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#endif // FULL_SYSTEM 123 124 // increment the number of running systms 125 numSystemsRunning++; 126} 127 128System::~System() 129{ 130#if FULL_SYSTEM 131 delete kernelSymtab; 132 delete kernel; 133#else 134 panic("System::fixFuncEventAddr needs to be rewritten " 135 "to work with syscall emulation"); 136#endif // FULL_SYSTEM} 137} 138 139#if FULL_SYSTEM 140 141 142int rgdb_wait = -1; 143 144#endif // FULL_SYSTEM 145 146int 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 |