pseudo_inst.cc revision 5504
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 <fstream> 36#include <string> 37 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 "arch/kernel_stats.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 PseudoInst { 59 60void 61arm(ThreadContext *tc) 62{ 63 if (tc->getKernelStats()) 64 tc->getKernelStats()->arm(); 65} 66 67void 68quiesce(ThreadContext *tc) 69{ 70 if (!tc->getCpuPtr()->params->do_quiesce) 71 return; 72 73 DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name()); 74 75 tc->suspend(); 76 if (tc->getKernelStats()) 77 tc->getKernelStats()->quiesce(); 78} 79 80void 81quiesceNs(ThreadContext *tc, uint64_t ns) 82{ 83 if (!tc->getCpuPtr()->params->do_quiesce || ns == 0) 84 return; 85 86 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 87 88 Tick resume = curTick + Clock::Int::ns * ns; 89 90 quiesceEvent->reschedule(resume, true); 91 92 DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n", 93 tc->getCpuPtr()->name(), ns, resume); 94 95 tc->suspend(); 96 if (tc->getKernelStats()) 97 tc->getKernelStats()->quiesce(); 98} 99 100void 101quiesceCycles(ThreadContext *tc, uint64_t cycles) 102{ 103 if (!tc->getCpuPtr()->params->do_quiesce || cycles == 0) 104 return; 105 106 EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent(); 107 108 Tick resume = curTick + tc->getCpuPtr()->ticks(cycles); 109 110 quiesceEvent->reschedule(resume, true); 111 112 DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n", 113 tc->getCpuPtr()->name(), cycles, resume); 114 115 tc->suspend(); 116 if (tc->getKernelStats()) 117 tc->getKernelStats()->quiesce(); 118} 119 120uint64_t 121quiesceTime(ThreadContext *tc) 122{ 123 return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns; 124} 125 126void 127m5exit_old(ThreadContext *tc) 128{ 129 exitSimLoop("m5_exit_old instruction encountered"); 130} 131 132void 133m5exit(ThreadContext *tc, Tick delay) 134{ 135 Tick when = curTick + delay * Clock::Int::ns; 136 schedExitSimLoop("m5_exit instruction encountered", when); 137} 138 139void 140loadsymbol(ThreadContext *tc) 141{ 142 const string &filename = tc->getCpuPtr()->system->params()->symbolfile; 143 if (filename.empty()) { 144 return; 145 } 146 147 std::string buffer; 148 ifstream file(filename.c_str()); 149 150 if (!file) 151 fatal("file error: Can't open symbol table file %s\n", filename); 152 153 while (!file.eof()) { 154 getline(file, buffer); 155 156 if (buffer.empty()) 157 continue; 158 159 int idx = buffer.find(' '); 160 if (idx == string::npos) 161 continue; 162 163 string address = "0x" + buffer.substr(0, idx); 164 eat_white(address); 165 if (address.empty()) 166 continue; 167 168 // Skip over letter and space 169 string symbol = buffer.substr(idx + 3); 170 eat_white(symbol); 171 if (symbol.empty()) 172 continue; 173 174 Addr addr; 175 if (!to_number(address, addr)) 176 continue; 177 178 if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol)) 179 continue; 180 181 182 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 183 } 184 file.close(); 185} 186 187void 188resetstats(ThreadContext *tc, Tick delay, Tick period) 189{ 190 if (!tc->getCpuPtr()->params->do_statistics_insts) 191 return; 192 193 194 Tick when = curTick + delay * Clock::Int::ns; 195 Tick repeat = period * Clock::Int::ns; 196 197 Stats::StatEvent(false, true, when, repeat); 198} 199 200void 201dumpstats(ThreadContext *tc, Tick delay, Tick period) 202{ 203 if (!tc->getCpuPtr()->params->do_statistics_insts) 204 return; 205 206 207 Tick when = curTick + delay * Clock::Int::ns; 208 Tick repeat = period * Clock::Int::ns; 209 210 Stats::StatEvent(true, false, when, repeat); 211} 212 213void 214addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr) 215{ 216 char symb[100]; 217 CopyStringOut(tc, symb, symbolAddr, 100); 218 std::string symbol(symb); 219 220 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 221 222 tc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 223} 224 225void 226anBegin(ThreadContext *tc, uint64_t cur) 227{ 228 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 229 0xFFFFFFFF, 0,0); 230} 231 232void 233anWait(ThreadContext *tc, uint64_t cur, uint64_t wait) 234{ 235 Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur & 236 0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF); 237} 238 239 240void 241dumpresetstats(ThreadContext *tc, Tick delay, Tick period) 242{ 243 if (!tc->getCpuPtr()->params->do_statistics_insts) 244 return; 245 246 247 Tick when = curTick + delay * Clock::Int::ns; 248 Tick repeat = period * Clock::Int::ns; 249 250 Stats::StatEvent(true, true, when, repeat); 251} 252 253void 254m5checkpoint(ThreadContext *tc, Tick delay, Tick period) 255{ 256 if (!tc->getCpuPtr()->params->do_checkpoint_insts) 257 return; 258 259 Tick when = curTick + delay * Clock::Int::ns; 260 Tick repeat = period * Clock::Int::ns; 261 262 schedExitSimLoop("checkpoint", when, repeat); 263} 264 265uint64_t 266readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset) 267{ 268 const string &file = tc->getSystemPtr()->params()->readfile; 269 if (file.empty()) { 270 return ULL(0); 271 } 272 273 uint64_t result = 0; 274 275 int fd = ::open(file.c_str(), O_RDONLY, 0); 276 if (fd < 0) 277 panic("could not open file %s\n", file); 278 279 if (::lseek(fd, offset, SEEK_SET) < 0) 280 panic("could not seek: %s", strerror(errno)); 281 282 char *buf = new char[len]; 283 char *p = buf; 284 while (len > 0) { 285 int bytes = ::read(fd, p, len); 286 if (bytes <= 0) 287 break; 288 289 p += bytes; 290 result += bytes; 291 len -= bytes; 292 } 293 294 close(fd); 295 CopyIn(tc, vaddr, buf, result); 296 delete [] buf; 297 return result; 298} 299 300void 301debugbreak(ThreadContext *tc) 302{ 303 debug_break(); 304} 305 306void 307switchcpu(ThreadContext *tc) 308{ 309 exitSimLoop("switchcpu"); 310} 311 312/* namespace PseudoInst */ } 313