pseudo_inst.cc revision 2234
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 if (xc->quiesceEvent.scheduled()) 87 xc->quiesceEvent.reschedule(curTick + Clock::Int::ns * ns); 88 else 89 xc->quiesceEvent.schedule(curTick + Clock::Int::ns * ns); 90 91 xc->suspend(); 92 xc->kernelStats->quiesce(); 93 } 94 95 void 96 quiesceCycles(ExecContext *xc, uint64_t cycles) 97 { 98 if (!doQuiesce || cycles == 0) 99 return; 100 101 if (xc->quiesceEvent.scheduled()) 102 xc->quiesceEvent.reschedule(curTick + xc->cpu->cycles(cycles)); 103 else 104 xc->quiesceEvent.schedule(curTick + xc->cpu->cycles(cycles)); 105 106 xc->suspend(); 107 xc->kernelStats->quiesce(); 108 } 109 110 uint64_t 111 quiesceTime(ExecContext *xc) 112 { 113 return (xc->lastActivate - xc->lastSuspend) / Clock::Int::ns ; 114 } 115 116 void 117 ivlb(ExecContext *xc) 118 { 119 xc->getCpuPtr()->kernelStats->ivlb(); 120 } 121 122 void 123 ivle(ExecContext *xc) 124 { 125 } 126 127 void 128 m5exit_old(ExecContext *xc) 129 { 130 SimExit(curTick, "m5_exit_old instruction encountered"); 131 } 132 133 void 134 m5exit(ExecContext *xc, Tick delay) 135 { 136 Tick when = curTick + delay * Clock::Int::ns; 137 SimExit(when, "m5_exit instruction encountered"); 138 } 139 140 void 141 resetstats(ExecContext *xc, Tick delay, Tick period) 142 { 143 if (!doStatisticsInsts) 144 return; 145 146 147 Tick when = curTick + delay * Clock::Int::ns; 148 Tick repeat = period * Clock::Int::ns; 149 150 using namespace Stats; 151 SetupEvent(Reset, when, repeat); 152 } 153 154 void 155 dumpstats(ExecContext *xc, Tick delay, Tick period) 156 { 157 if (!doStatisticsInsts) 158 return; 159 160 161 Tick when = curTick + delay * Clock::Int::ns; 162 Tick repeat = period * Clock::Int::ns; 163 164 using namespace Stats; 165 SetupEvent(Dump, when, repeat); 166 } 167 168 void 169 addsymbol(ExecContext *xc, Addr addr, Addr symbolAddr) 170 { 171 char symb[100]; 172 CopyString(xc, symb, symbolAddr, 100); 173 std::string symbol(symb); 174 175 DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr); 176 177 xc->getSystemPtr()->kernelSymtab->insert(addr,symbol); 178 } 179 180 void 181 dumpresetstats(ExecContext *xc, Tick delay, Tick period) 182 { 183 if (!doStatisticsInsts) 184 return; 185 186 187 Tick when = curTick + delay * Clock::Int::ns; 188 Tick repeat = period * Clock::Int::ns; 189 190 using namespace Stats; 191 SetupEvent(Dump|Reset, when, repeat); 192 } 193 194 void 195 m5checkpoint(ExecContext *xc, Tick delay, Tick period) 196 { 197 if (!doCheckpointInsts) 198 return; 199 200 201 Tick when = curTick + delay * Clock::Int::ns; 202 Tick repeat = period * Clock::Int::ns; 203 204 Checkpoint::setup(when, repeat); 205 } 206 207 uint64_t 208 readfile(ExecContext *xc, Addr vaddr, uint64_t len, uint64_t offset) 209 { 210 const string &file = xc->getCpuPtr()->system->params()->readfile; 211 if (file.empty()) { 212 return ULL(0); 213 } 214 215 uint64_t result = 0; 216 217 int fd = ::open(file.c_str(), O_RDONLY, 0); 218 if (fd < 0) 219 panic("could not open file %s\n", file); 220 221 if (::lseek(fd, offset, SEEK_SET) < 0) 222 panic("could not seek: %s", strerror(errno)); 223 224 char *buf = new char[len]; 225 char *p = buf; 226 while (len > 0) { 227 int bytes = ::read(fd, p, len); 228 if (bytes <= 0) 229 break; 230 231 p += bytes; 232 result += bytes; 233 len -= bytes; 234 } 235 236 close(fd); 237 CopyIn(xc, vaddr, buf, result); 238 delete [] buf; 239 return result; 240 } 241 242 class Context : public ParamContext 243 { 244 public: 245 Context(const string §ion) : ParamContext(section) {} 246 void checkParams(); 247 }; 248 249 Context context("pseudo_inst"); 250 251 Param<bool> __quiesce(&context, "quiesce", 252 "enable quiesce instructions", 253 true); 254 Param<bool> __statistics(&context, "statistics", 255 "enable statistics pseudo instructions", 256 true); 257 Param<bool> __checkpoint(&context, "checkpoint", 258 "enable checkpoint pseudo instructions", 259 true); 260 261 void 262 Context::checkParams() 263 { 264 doQuiesce = __quiesce; 265 doStatisticsInsts = __statistics; 266 doCheckpointInsts = __checkpoint; 267 } 268 269 void debugbreak(ExecContext *xc) 270 { 271 debug_break(); 272 } 273 274 void switchcpu(ExecContext *xc) 275 { 276 if (SampCPU) 277 SampCPU->switchCPUs(); 278 } 279} 280