system.cc revision 2901:f9a45473ab55
15450Sgblack@eecs.umich.edu/* 25132Sgblack@eecs.umich.edu * Copyright (c) 2003-2006 The Regents of The University of Michigan 35132Sgblack@eecs.umich.edu * All rights reserved. 47087Snate@binkert.org * 57087Snate@binkert.org * Redistribution and use in source and binary forms, with or without 67087Snate@binkert.org * modification, are permitted provided that the following conditions are 77087Snate@binkert.org * met: redistributions of source code must retain the above copyright 87087Snate@binkert.org * notice, this list of conditions and the following disclaimer; 97087Snate@binkert.org * redistributions in binary form must reproduce the above copyright 107087Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 117087Snate@binkert.org * documentation and/or other materials provided with the distribution; 125132Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 137087Snate@binkert.org * contributors may be used to endorse or promote products derived from 147087Snate@binkert.org * this software without specific prior written permission. 157087Snate@binkert.org * 167087Snate@binkert.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 177087Snate@binkert.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 187087Snate@binkert.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 197087Snate@binkert.org * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 207087Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 215132Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 227087Snate@binkert.org * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235132Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245132Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255132Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265132Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275132Sgblack@eecs.umich.edu * 285132Sgblack@eecs.umich.edu * Authors: Steve Reinhardt 295132Sgblack@eecs.umich.edu * Lisa Hsu 305132Sgblack@eecs.umich.edu * Nathan Binkert 315132Sgblack@eecs.umich.edu * Ali Saidi 325132Sgblack@eecs.umich.edu */ 335132Sgblack@eecs.umich.edu 345132Sgblack@eecs.umich.edu#include "arch/isa_traits.hh" 355132Sgblack@eecs.umich.edu#include "base/loader/object_file.hh" 365132Sgblack@eecs.umich.edu#include "base/loader/symtab.hh" 375132Sgblack@eecs.umich.edu#include "base/trace.hh" 385132Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 395450Sgblack@eecs.umich.edu#include "mem/mem_object.hh" 405615Sgblack@eecs.umich.edu#include "mem/physical.hh" 415625Sgblack@eecs.umich.edu#include "sim/builder.hh" 425627Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 435132Sgblack@eecs.umich.edu#include "sim/system.hh" 445132Sgblack@eecs.umich.edu#if FULL_SYSTEM 455132Sgblack@eecs.umich.edu#include "arch/vtophys.hh" 465132Sgblack@eecs.umich.edu#include "base/remote_gdb.hh" 475615Sgblack@eecs.umich.edu#include "kern/kernel_stats.hh" 485615Sgblack@eecs.umich.edu#endif 495625Sgblack@eecs.umich.edu 505625Sgblack@eecs.umich.eduusing namespace std; 515625Sgblack@eecs.umich.eduusing namespace TheISA; 525625Sgblack@eecs.umich.edu 535625Sgblack@eecs.umich.eduvector<System *> System::systemList; 545625Sgblack@eecs.umich.edu 555627Sgblack@eecs.umich.eduint System::numSystemsRunning = 0; 565627Sgblack@eecs.umich.edu 575299Sgblack@eecs.umich.eduSystem::System(Params *p) 585299Sgblack@eecs.umich.edu : SimObject(p->name), physmem(p->physmem), numcpus(0), 595299Sgblack@eecs.umich.edu#if FULL_SYSTEM 605450Sgblack@eecs.umich.edu init_param(p->init_param), 615450Sgblack@eecs.umich.edu functionalPort(p->name + "-fport"), 625450Sgblack@eecs.umich.edu 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 145 146 147void 148System::setMemoryMode(MemoryMode mode) 149{ 150 assert(getState() == Drained); 151 memoryMode = mode; 152} 153 154int 155System::registerThreadContext(ThreadContext *tc, int id) 156{ 157 if (id == -1) { 158 for (id = 0; id < threadContexts.size(); id++) { 159 if (!threadContexts[id]) 160 break; 161 } 162 } 163 164 if (threadContexts.size() <= id) 165 threadContexts.resize(id + 1); 166 167 if (threadContexts[id]) 168 panic("Cannot have two CPUs with the same id (%d)\n", id); 169 170 threadContexts[id] = tc; 171 numcpus++; 172 173#if FULL_SYSTEM 174 RemoteGDB *rgdb = new RemoteGDB(this, tc); 175 GDBListener *gdbl = new GDBListener(rgdb, 7000 + id); 176 gdbl->listen(); 177 /** 178 * Uncommenting this line waits for a remote debugger to connect 179 * to the simulator before continuing. 180 */ 181 if (rgdb_wait != -1 && rgdb_wait == id) 182 gdbl->accept(); 183 184 if (remoteGDB.size() <= id) { 185 remoteGDB.resize(id + 1); 186 } 187 188 remoteGDB[id] = rgdb; 189#endif // FULL_SYSTEM 190 191 return id; 192} 193 194void 195System::startup() 196{ 197 int i; 198 for (i = 0; i < threadContexts.size(); i++) 199 threadContexts[i]->activate(0); 200} 201 202void 203System::replaceThreadContext(ThreadContext *tc, int id) 204{ 205 if (id >= threadContexts.size()) { 206 panic("replaceThreadContext: bad id, %d >= %d\n", 207 id, threadContexts.size()); 208 } 209 210 threadContexts[id] = tc; 211#if FULL_SYSTEM 212 remoteGDB[id]->replaceThreadContext(tc); 213#endif // FULL_SYSTEM 214} 215 216#if !FULL_SYSTEM 217Addr 218System::new_page() 219{ 220 Addr return_addr = page_ptr << LogVMPageSize; 221 ++page_ptr; 222 return return_addr; 223} 224#endif 225 226void 227System::serialize(ostream &os) 228{ 229#if FULL_SYSTEM 230 kernelSymtab->serialize("kernel_symtab", os); 231#endif // FULL_SYSTEM 232} 233 234 235void 236System::unserialize(Checkpoint *cp, const string §ion) 237{ 238#if FULL_SYSTEM 239 kernelSymtab->unserialize("kernel_symtab", cp, section); 240#endif // FULL_SYSTEM 241} 242 243void 244System::printSystems() 245{ 246 vector<System *>::iterator i = systemList.begin(); 247 vector<System *>::iterator end = systemList.end(); 248 for (; i != end; ++i) { 249 System *sys = *i; 250 cerr << "System " << sys->name() << ": " << hex << sys << endl; 251 } 252} 253 254void 255printSystems() 256{ 257 System::printSystems(); 258} 259 260#if FULL_SYSTEM 261 262// In full system mode, only derived classes (e.g. AlphaLinuxSystem) 263// can be created directly. 264 265DEFINE_SIM_OBJECT_CLASS_NAME("System", System) 266 267#else 268 269BEGIN_DECLARE_SIM_OBJECT_PARAMS(System) 270 271 SimObjectParam<PhysicalMemory *> physmem; 272 273END_DECLARE_SIM_OBJECT_PARAMS(System) 274 275BEGIN_INIT_SIM_OBJECT_PARAMS(System) 276 277 INIT_PARAM(physmem, "physical memory") 278 279END_INIT_SIM_OBJECT_PARAMS(System) 280 281CREATE_SIM_OBJECT(System) 282{ 283 System::Params *p = new System::Params; 284 p->name = getInstanceName(); 285 p->physmem = physmem; 286 return new System(p); 287} 288 289REGISTER_SIM_OBJECT("System", System) 290 291#endif 292