pseudo_inst.cc revision 2521
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 29#include <errno.h> 30#include <fcntl.h> 31#include <unistd.h> 32#include <cstdio> 33 34#include <string> 35 36#include "sim/pseudo_inst.hh" 37#include "arch/vtophys.hh" 38#include "cpu/base.hh" 39#include "cpu/sampler/sampler.hh" 40#include "cpu/exec_context.hh" 41#include "kern/kernel_stats.hh" 42#include "sim/param.hh" 43#include "sim/serialize.hh" 44#include "sim/sim_exit.hh" 45#include "sim/stat_control.hh" 46#include "sim/stats.hh" 47#include "sim/system.hh" 48#include "sim/debug.hh" 49#include "sim/vptr.hh" 50 51using namespace std; 52 53extern Sampler *SampCPU; 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(ExecContext *xc) 66 { 67 xc->getCpuPtr()->kernelStats->arm(); 68 } 69 70 void 71 quiesce(ExecContext *xc) 72 { 73 if (!doQuiesce) 74 return; 75 76 xc->suspend(); 77 xc->getCpuPtr()->kernelStats->quiesce(); 78 } 79 80 void 81 quiesceNs(ExecContext *xc, uint64_t ns) 82 { 83 if (!doQuiesce || ns == 0) 84 return; 85 86 Event *quiesceEvent = xc->getQuiesceEvent(); 87 88 if (quiesceEvent->scheduled()) 89 quiesceEvent->reschedule(curTick + Clock::Int::ns * ns); 90 else 91 quiesceEvent->schedule(curTick + Clock::Int::ns * ns); 92 93 xc->suspend(); 94 xc->getCpuPtr()->kernelStats->quiesce(); 95 } 96 97 void 98 quiesceCycles(ExecContext *xc, uint64_t cycles) 99 { 100 if (!doQuiesce || cycles == 0) 101 return; 102 103 Event *quiesceEvent = xc->getQuiesceEvent(); 104 105 if (quiesceEvent->scheduled()) 106 quiesceEvent->reschedule(curTick + 107 xc->getCpuPtr()->cycles(cycles)); 108 else 109 quiesceEvent->schedule(curTick + 110 xc->getCpuPtr()->cycles(cycles)); 111 112 xc->suspend(); 113 xc->getCpuPtr()->kernelStats->quiesce(); 114 } 115 116 uint64_t 117 quiesceTime(ExecContext *xc) 118 { 119 return (xc->readLastActivate() - xc->readLastSuspend()) / Clock::Int::ns; 120 } 121 122 void 123 ivlb(ExecContext *xc) 124 { 125 xc->getCpuPtr()->kernelStats->ivlb(); 126 } 127 128 void 129 ivle(ExecContext *xc) 130 { 131 } 132 133 void 134 m5exit_old(ExecContext *xc) 135 { 136 SimExit(curTick, "m5_exit_old instruction encountered"); 137 } 138 139 void 140 m5exit(ExecContext *xc, Tick delay) 141 { 142 Tick when = curTick + delay * Clock::Int::ns; 143 SimExit(when, "m5_exit instruction encountered"); 144 } 145 146 void 147 resetstats(ExecContext *xc, Tick delay, Tick period) 148 { 149 if (!doStatisticsInsts) 150 return; 151 152 153 Tick when = curTick + delay * Clock::Int::ns; 154 Tick repeat = period * Clock::Int::ns; 155 156 using namespace Stats; 157 SetupEvent(Reset, when, repeat); 158 } 159 160 void 161 dumpstats(ExecContext *xc, Tick delay, Tick period) 162 { 163 if (!doStatisticsInsts) 164 return; 165 166 167 Tick when = curTick + delay * Clock::Int::ns; 168 Tick repeat = period * Clock::Int::ns; 169 170 using namespace Stats; 171 SetupEvent(Dump, when, repeat); 172 } 173 174 void 175 addsymbol(ExecContext *xc, Addr addr, Addr symbolAddr) 176 { 177 char symb[100]; 178 CopyStringOut(xc, symb, symbolAddr, 100); 179 std::string symbol(symb); 180 181 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 182 183 xc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 184 } 185 186 void 187 dumpresetstats(ExecContext *xc, Tick delay, Tick period) 188 { 189 if (!doStatisticsInsts) 190 return; 191 192 193 Tick when = curTick + delay * Clock::Int::ns; 194 Tick repeat = period * Clock::Int::ns; 195 196 using namespace Stats; 197 SetupEvent(Dump|Reset, when, repeat); 198 } 199 200 void 201 m5checkpoint(ExecContext *xc, Tick delay, Tick period) 202 { 203 if (!doCheckpointInsts) 204 return; 205 206 207 Tick when = curTick + delay * Clock::Int::ns; 208 Tick repeat = period * Clock::Int::ns; 209 210 Checkpoint::setup(when, repeat); 211 } 212 213 uint64_t 214 readfile(ExecContext *xc, Addr vaddr, uint64_t len, uint64_t offset) 215 { 216 const string &file = xc->getCpuPtr()->system->params()->readfile; 217 if (file.empty()) { 218 return ULL(0); 219 } 220 221 uint64_t result = 0; 222 223 int fd = ::open(file.c_str(), O_RDONLY, 0); 224 if (fd < 0) 225 panic("could not open file %s\n", file); 226 227 if (::lseek(fd, offset, SEEK_SET) < 0) 228 panic("could not seek: %s", strerror(errno)); 229 230 char *buf = new char[len]; 231 char *p = buf; 232 while (len > 0) { 233 int bytes = ::read(fd, p, len); 234 if (bytes <= 0) 235 break; 236 237 p += bytes; 238 result += bytes; 239 len -= bytes; 240 } 241 242 close(fd); 243 CopyIn(xc, vaddr, buf, result); 244 delete [] buf; 245 return result; 246 } 247 248 class Context : public ParamContext 249 { 250 public: 251 Context(const string §ion) : ParamContext(section) {} 252 void checkParams(); 253 }; 254 255 Context context("pseudo_inst"); 256 257 Param<bool> __quiesce(&context, "quiesce", 258 "enable quiesce instructions", 259 true); 260 Param<bool> __statistics(&context, "statistics", 261 "enable statistics pseudo instructions", 262 true); 263 Param<bool> __checkpoint(&context, "checkpoint", 264 "enable checkpoint pseudo instructions", 265 true); 266 267 void 268 Context::checkParams() 269 { 270 doQuiesce = __quiesce; 271 doStatisticsInsts = __statistics; 272 doCheckpointInsts = __checkpoint; 273 } 274 275 void debugbreak(ExecContext *xc) 276 { 277 debug_break(); 278 } 279 280 void switchcpu(ExecContext *xc) 281 { 282 if (SampCPU) 283 SampCPU->switchCPUs(); 284 } 285} 286