pseudo_inst.cc revision 3565
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: Nathan Binkert 29 */ 30 31#include <errno.h> 32#include <fcntl.h> 33#include <unistd.h> 34 35#include <string> 36 37#include "arch/vtophys.hh" 38#include "base/annotate.hh" 39#include "cpu/base.hh" 40#include "cpu/thread_context.hh" 41#include "cpu/quiesce_event.hh" 42#include "arch/kernel_stats.hh" 43#include "sim/param.hh" 44#include "sim/pseudo_inst.hh" 45#include "sim/serialize.hh" 46#include "sim/sim_exit.hh" 47#include "sim/stat_control.hh" 48#include "sim/stats.hh" 49#include "sim/system.hh" 50#include "sim/debug.hh" 51#include "sim/vptr.hh" 52 53using namespace std; 54 55using namespace Stats; 56using namespace TheISA; 57 58namespace AlphaPseudo 59{ 60 bool doStatisticsInsts; 61 bool doCheckpointInsts; 62 bool doQuiesce; 63 64 void 65 arm(ThreadContext *tc) 66 { 67 if (tc->getKernelStats()) 68 tc->getKernelStats()->arm(); 69 } 70 71 void 72 quiesce(ThreadContext *tc) 73 { 74 if (!doQuiesce) 75 return; 76 77 DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name()); 78 79 tc->suspend(); 80 if (tc->getKernelStats()) 81 tc->getKernelStats()->quiesce(); 82 } 83 84 void 85 quiesceNs(ThreadContext *tc, uint64_t ns) 86 { 87 if (!doQuiesce || ns == 0) 88 return; 89 90 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 91 92 Tick resume = curTick + Clock::Int::ns * ns; 93 94 if (quiesceEvent->scheduled()) 95 quiesceEvent->reschedule(resume); 96 else 97 quiesceEvent->schedule(resume); 98 99 DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n", 100 tc->getCpuPtr()->name(), ns, resume); 101 102 tc->suspend(); 103 if (tc->getKernelStats()) 104 tc->getKernelStats()->quiesce(); 105 } 106 107 void 108 quiesceCycles(ThreadContext *tc, uint64_t cycles) 109 { 110 if (!doQuiesce || cycles == 0) 111 return; 112 113 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 114 115 Tick resume = curTick + tc->getCpuPtr()->cycles(cycles); 116 117 if (quiesceEvent->scheduled()) 118 quiesceEvent->reschedule(resume); 119 else 120 quiesceEvent->schedule(resume); 121 122 DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n", 123 tc->getCpuPtr()->name(), cycles, resume); 124 125 tc->suspend(); 126 if (tc->getKernelStats()) 127 tc->getKernelStats()->quiesce(); 128 } 129 130 uint64_t 131 quiesceTime(ThreadContext *tc) 132 { 133 return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns; 134 } 135 136 void 137 m5exit_old(ThreadContext *tc) 138 { 139 exitSimLoop("m5_exit_old instruction encountered"); 140 } 141 142 void 143 m5exit(ThreadContext *tc, Tick delay) 144 { 145 Tick when = curTick + delay * Clock::Int::ns; 146 schedExitSimLoop("m5_exit instruction encountered", when); 147 } 148 149 void 150 loadsymbol(ThreadContext *tc) 151 { 152 const string &filename = tc->getCpuPtr()->system->params()->symbolfile; 153 if (filename.empty()) { 154 return; 155 } 156 157 std::string buffer; 158 ifstream file(filename.c_str()); 159 160 if (!file) 161 fatal("file error: Can't open symbol table file %s\n", filename); 162 163 while (!file.eof()) { 164 getline(file, buffer); 165 166 if (buffer.empty()) 167 continue; 168 169 int idx = buffer.find(' '); 170 if (idx == string::npos) 171 continue; 172 173 string address = "0x" + buffer.substr(0, idx); 174 eat_white(address); 175 if (address.empty()) 176 continue; 177 178 // Skip over letter and space 179 string symbol = buffer.substr(idx + 3); 180 eat_white(symbol); 181 if (symbol.empty()) 182 continue; 183 184 Addr addr; 185 if (!to_number(address, addr)) 186 continue; 187 188 if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol)) 189 continue; 190 191 192 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 193 } 194 file.close(); 195 } 196 197 void 198 resetstats(ThreadContext *tc, Tick delay, Tick period) 199 { 200 if (!doStatisticsInsts) 201 return; 202 203 204 Tick when = curTick + delay * Clock::Int::ns; 205 Tick repeat = period * Clock::Int::ns; 206 207 using namespace Stats; 208 SetupEvent(Reset, when, repeat); 209 } 210 211 void 212 dumpstats(ThreadContext *tc, Tick delay, Tick period) 213 { 214 if (!doStatisticsInsts) 215 return; 216 217 218 Tick when = curTick + delay * Clock::Int::ns; 219 Tick repeat = period * Clock::Int::ns; 220 221 using namespace Stats; 222 SetupEvent(Dump, when, repeat); 223 } 224 225 void 226 addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr) 227 { 228 char symb[100]; 229 CopyStringOut(tc, symb, symbolAddr, 100); 230 std::string symbol(symb); 231 232 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 233 234 tc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 235 } 236 237 void 238 anBegin(ThreadContext *tc, uint64_t cur) 239 { 240 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 241 0xFFFFFFFF, 0,0); 242 } 243 244 void 245 anWait(ThreadContext *tc, uint64_t cur, uint64_t wait) 246 { 247 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 248 0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF); 249 } 250 251 252 void 253 dumpresetstats(ThreadContext *tc, Tick delay, Tick period) 254 { 255 if (!doStatisticsInsts) 256 return; 257 258 259 Tick when = curTick + delay * Clock::Int::ns; 260 Tick repeat = period * Clock::Int::ns; 261 262 using namespace Stats; 263 SetupEvent(Dump|Reset, when, repeat); 264 } 265 266 void 267 m5checkpoint(ThreadContext *tc, Tick delay, Tick period) 268 { 269 if (!doCheckpointInsts) 270 return; 271 272 Tick when = curTick + delay * Clock::Int::ns; 273 Tick repeat = period * Clock::Int::ns; 274 275 schedExitSimLoop("checkpoint", when, repeat); 276 } 277 278 uint64_t 279 readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset) 280 { 281 const string &file = tc->getCpuPtr()->system->params()->readfile; 282 if (file.empty()) { 283 return ULL(0); 284 } 285 286 uint64_t result = 0; 287 288 int fd = ::open(file.c_str(), O_RDONLY, 0); 289 if (fd < 0) 290 panic("could not open file %s\n", file); 291 292 if (::lseek(fd, offset, SEEK_SET) < 0) 293 panic("could not seek: %s", strerror(errno)); 294 295 char *buf = new char[len]; 296 char *p = buf; 297 while (len > 0) { 298 int bytes = ::read(fd, p, len); 299 if (bytes <= 0) 300 break; 301 302 p += bytes; 303 result += bytes; 304 len -= bytes; 305 } 306 307 close(fd); 308 CopyIn(tc, vaddr, buf, result); 309 delete [] buf; 310 return result; 311 } 312 313 class Context : public ParamContext 314 { 315 public: 316 Context(const string §ion) : ParamContext(section) {} 317 void checkParams(); 318 }; 319 320 Context context("pseudo_inst"); 321 322 Param<bool> __quiesce(&context, "quiesce", 323 "enable quiesce instructions", 324 true); 325 Param<bool> __statistics(&context, "statistics", 326 "enable statistics pseudo instructions", 327 true); 328 Param<bool> __checkpoint(&context, "checkpoint", 329 "enable checkpoint pseudo instructions", 330 true); 331 332 void 333 Context::checkParams() 334 { 335 doQuiesce = __quiesce; 336 doStatisticsInsts = __statistics; 337 doCheckpointInsts = __checkpoint; 338 } 339 340 void debugbreak(ThreadContext *tc) 341 { 342 debug_break(); 343 } 344 345 void switchcpu(ThreadContext *tc) 346 { 347 exitSimLoop("switchcpu"); 348 } 349} 350