pseudo_inst.cc revision 3373
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 "sim/pseudo_inst.hh" 38#include "arch/vtophys.hh" 39#include "base/annotate.hh" 40#include "cpu/base.hh" 41#include "cpu/thread_context.hh" 42#include "cpu/quiesce_event.hh" 43#include "kern/kernel_stats.hh" 44#include "sim/param.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 ivlb(ThreadContext *tc) 138 { 139 if (tc->getKernelStats()) 140 tc->getKernelStats()->ivlb(); 141 } 142 143 void 144 ivle(ThreadContext *tc) 145 { 146 } 147 148 void 149 m5exit_old(ThreadContext *tc) 150 { 151 exitSimLoop("m5_exit_old instruction encountered"); 152 } 153 154 void 155 m5exit(ThreadContext *tc, Tick delay) 156 { 157 Tick when = curTick + delay * Clock::Int::ns; 158 schedExitSimLoop("m5_exit instruction encountered", when); 159 } 160 161 void 162 loadsymbol(ThreadContext *tc) 163 { 164 const string &filename = tc->getCpuPtr()->system->params()->symbolfile; 165 if (filename.empty()) { 166 return; 167 } 168 169 std::string buffer; 170 ifstream file(filename.c_str()); 171 172 if (!file) 173 fatal("file error: Can't open symbol table file %s\n", filename); 174 175 while (!file.eof()) { 176 getline(file, buffer); 177 178 if (buffer.empty()) 179 continue; 180 181 int idx = buffer.find(' '); 182 if (idx == string::npos) 183 continue; 184 185 string address = "0x" + buffer.substr(0, idx); 186 eat_white(address); 187 if (address.empty()) 188 continue; 189 190 // Skip over letter and space 191 string symbol = buffer.substr(idx + 3); 192 eat_white(symbol); 193 if (symbol.empty()) 194 continue; 195 196 Addr addr; 197 if (!to_number(address, addr)) 198 continue; 199 200 if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol)) 201 continue; 202 203 204 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 205 } 206 file.close(); 207 } 208 209 void 210 resetstats(ThreadContext *tc, Tick delay, Tick period) 211 { 212 if (!doStatisticsInsts) 213 return; 214 215 216 Tick when = curTick + delay * Clock::Int::ns; 217 Tick repeat = period * Clock::Int::ns; 218 219 using namespace Stats; 220 SetupEvent(Reset, when, repeat); 221 } 222 223 void 224 dumpstats(ThreadContext *tc, Tick delay, Tick period) 225 { 226 if (!doStatisticsInsts) 227 return; 228 229 230 Tick when = curTick + delay * Clock::Int::ns; 231 Tick repeat = period * Clock::Int::ns; 232 233 using namespace Stats; 234 SetupEvent(Dump, when, repeat); 235 } 236 237 void 238 addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr) 239 { 240 char symb[100]; 241 CopyStringOut(tc, symb, symbolAddr, 100); 242 std::string symbol(symb); 243 244 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 245 246 tc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 247 } 248 249 void 250 anBegin(ThreadContext *tc, uint64_t cur) 251 { 252 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 253 0xFFFFFFFF, 0,0); 254 } 255 256 void 257 anWait(ThreadContext *tc, uint64_t cur, uint64_t wait) 258 { 259 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 260 0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF); 261 } 262 263 264 void 265 dumpresetstats(ThreadContext *tc, Tick delay, Tick period) 266 { 267 if (!doStatisticsInsts) 268 return; 269 270 271 Tick when = curTick + delay * Clock::Int::ns; 272 Tick repeat = period * Clock::Int::ns; 273 274 using namespace Stats; 275 SetupEvent(Dump|Reset, when, repeat); 276 } 277 278 void 279 m5checkpoint(ThreadContext *tc, Tick delay, Tick period) 280 { 281 if (!doCheckpointInsts) 282 return; 283 284 Tick when = curTick + delay * Clock::Int::ns; 285 Tick repeat = period * Clock::Int::ns; 286 287 schedExitSimLoop("checkpoint", when, repeat); 288 } 289 290 uint64_t 291 readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset) 292 { 293 const string &file = tc->getCpuPtr()->system->params()->readfile; 294 if (file.empty()) { 295 return ULL(0); 296 } 297 298 uint64_t result = 0; 299 300 int fd = ::open(file.c_str(), O_RDONLY, 0); 301 if (fd < 0) 302 panic("could not open file %s\n", file); 303 304 if (::lseek(fd, offset, SEEK_SET) < 0) 305 panic("could not seek: %s", strerror(errno)); 306 307 char *buf = new char[len]; 308 char *p = buf; 309 while (len > 0) { 310 int bytes = ::read(fd, p, len); 311 if (bytes <= 0) 312 break; 313 314 p += bytes; 315 result += bytes; 316 len -= bytes; 317 } 318 319 close(fd); 320 CopyIn(tc, vaddr, buf, result); 321 delete [] buf; 322 return result; 323 } 324 325 class Context : public ParamContext 326 { 327 public: 328 Context(const string §ion) : ParamContext(section) {} 329 void checkParams(); 330 }; 331 332 Context context("pseudo_inst"); 333 334 Param<bool> __quiesce(&context, "quiesce", 335 "enable quiesce instructions", 336 true); 337 Param<bool> __statistics(&context, "statistics", 338 "enable statistics pseudo instructions", 339 true); 340 Param<bool> __checkpoint(&context, "checkpoint", 341 "enable checkpoint pseudo instructions", 342 true); 343 344 void 345 Context::checkParams() 346 { 347 doQuiesce = __quiesce; 348 doStatisticsInsts = __statistics; 349 doCheckpointInsts = __checkpoint; 350 } 351 352 void debugbreak(ThreadContext *tc) 353 { 354 debug_break(); 355 } 356 357 void switchcpu(ThreadContext *tc) 358 { 359 exitSimLoop("switchcpu"); 360 } 361} 362