pseudo_inst.cc revision 3126
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 tc->suspend(); 78 if (tc->getKernelStats()) 79 tc->getKernelStats()->quiesce(); 80 } 81 82 void 83 quiesceNs(ThreadContext *tc, uint64_t ns) 84 { 85 if (!doQuiesce || ns == 0) 86 return; 87 88 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 89 90 if (quiesceEvent->scheduled()) 91 quiesceEvent->reschedule(curTick + Clock::Int::ns * ns); 92 else 93 quiesceEvent->schedule(curTick + Clock::Int::ns * ns); 94 95 tc->suspend(); 96 if (tc->getKernelStats()) 97 tc->getKernelStats()->quiesce(); 98 } 99 100 void 101 quiesceCycles(ThreadContext *tc, uint64_t cycles) 102 { 103 if (!doQuiesce || cycles == 0) 104 return; 105 106 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 107 108 if (quiesceEvent->scheduled()) 109 quiesceEvent->reschedule(curTick + 110 tc->getCpuPtr()->cycles(cycles)); 111 else 112 quiesceEvent->schedule(curTick + 113 tc->getCpuPtr()->cycles(cycles)); 114 115 tc->suspend(); 116 if (tc->getKernelStats()) 117 tc->getKernelStats()->quiesce(); 118 } 119 120 uint64_t 121 quiesceTime(ThreadContext *tc) 122 { 123 return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns; 124 } 125 126 void 127 ivlb(ThreadContext *tc) 128 { 129 if (tc->getKernelStats()) 130 tc->getKernelStats()->ivlb(); 131 } 132 133 void 134 ivle(ThreadContext *tc) 135 { 136 } 137 138 void 139 m5exit_old(ThreadContext *tc) 140 { 141 exitSimLoop(curTick, "m5_exit_old instruction encountered"); 142 } 143 144 void 145 m5exit(ThreadContext *tc, Tick delay) 146 { 147 Tick when = curTick + delay * Clock::Int::ns; 148 exitSimLoop(when, "m5_exit instruction encountered"); 149 } 150 151 void 152 loadsymbol(ThreadContext *tc) 153 { 154 const string &filename = tc->getCpuPtr()->system->params()->symbolfile; 155 if (filename.empty()) { 156 return; 157 } 158 159 std::string buffer; 160 ifstream file(filename.c_str()); 161 162 if (!file) 163 fatal("file error: Can't open symbol table file %s\n", filename); 164 165 while (!file.eof()) { 166 getline(file, buffer); 167 168 if (buffer.empty()) 169 continue; 170 171 int idx = buffer.find(' '); 172 if (idx == string::npos) 173 continue; 174 175 string address = "0x" + buffer.substr(0, idx); 176 eat_white(address); 177 if (address.empty()) 178 continue; 179 180 // Skip over letter and space 181 string symbol = buffer.substr(idx + 3); 182 eat_white(symbol); 183 if (symbol.empty()) 184 continue; 185 186 Addr addr; 187 if (!to_number(address, addr)) 188 continue; 189 190 if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol)) 191 continue; 192 193 194 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 195 } 196 file.close(); 197 } 198 199 void 200 resetstats(ThreadContext *tc, Tick delay, Tick period) 201 { 202 if (!doStatisticsInsts) 203 return; 204 205 206 Tick when = curTick + delay * Clock::Int::ns; 207 Tick repeat = period * Clock::Int::ns; 208 209 using namespace Stats; 210 SetupEvent(Reset, when, repeat); 211 } 212 213 void 214 dumpstats(ThreadContext *tc, Tick delay, Tick period) 215 { 216 if (!doStatisticsInsts) 217 return; 218 219 220 Tick when = curTick + delay * Clock::Int::ns; 221 Tick repeat = period * Clock::Int::ns; 222 223 using namespace Stats; 224 SetupEvent(Dump, when, repeat); 225 } 226 227 void 228 addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr) 229 { 230 char symb[100]; 231 CopyStringOut(tc, symb, symbolAddr, 100); 232 std::string symbol(symb); 233 234 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 235 236 tc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 237 } 238 239 void 240 anBegin(ThreadContext *tc, uint64_t cur) 241 { 242 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 243 0xFFFFFFFF, 0,0); 244 } 245 246 void 247 anWait(ThreadContext *tc, uint64_t cur, uint64_t wait) 248 { 249 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 250 0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF); 251 } 252 253 254 void 255 dumpresetstats(ThreadContext *tc, Tick delay, Tick period) 256 { 257 if (!doStatisticsInsts) 258 return; 259 260 261 Tick when = curTick + delay * Clock::Int::ns; 262 Tick repeat = period * Clock::Int::ns; 263 264 using namespace Stats; 265 SetupEvent(Dump|Reset, when, repeat); 266 } 267 268 void 269 m5checkpoint(ThreadContext *tc, Tick delay, Tick period) 270 { 271 if (!doCheckpointInsts) 272 return; 273 exitSimLoop("checkpoint"); 274 } 275 276 uint64_t 277 readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset) 278 { 279 const string &file = tc->getCpuPtr()->system->params()->readfile; 280 if (file.empty()) { 281 return ULL(0); 282 } 283 284 uint64_t result = 0; 285 286 int fd = ::open(file.c_str(), O_RDONLY, 0); 287 if (fd < 0) 288 panic("could not open file %s\n", file); 289 290 if (::lseek(fd, offset, SEEK_SET) < 0) 291 panic("could not seek: %s", strerror(errno)); 292 293 char *buf = new char[len]; 294 char *p = buf; 295 while (len > 0) { 296 int bytes = ::read(fd, p, len); 297 if (bytes <= 0) 298 break; 299 300 p += bytes; 301 result += bytes; 302 len -= bytes; 303 } 304 305 close(fd); 306 CopyIn(tc, vaddr, buf, result); 307 delete [] buf; 308 return result; 309 } 310 311 class Context : public ParamContext 312 { 313 public: 314 Context(const string §ion) : ParamContext(section) {} 315 void checkParams(); 316 }; 317 318 Context context("pseudo_inst"); 319 320 Param<bool> __quiesce(&context, "quiesce", 321 "enable quiesce instructions", 322 true); 323 Param<bool> __statistics(&context, "statistics", 324 "enable statistics pseudo instructions", 325 true); 326 Param<bool> __checkpoint(&context, "checkpoint", 327 "enable checkpoint pseudo instructions", 328 true); 329 330 void 331 Context::checkParams() 332 { 333 doQuiesce = __quiesce; 334 doStatisticsInsts = __statistics; 335 doCheckpointInsts = __checkpoint; 336 } 337 338 void debugbreak(ThreadContext *tc) 339 { 340 debug_break(); 341 } 342 343 void switchcpu(ThreadContext *tc) 344 { 345 exitSimLoop("switchcpu"); 346 } 347} 348