src/sim/pseudo_inst.cc

   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 "arch/vtophys.hh"
  38 #include "base/annotate.hh"
  39 #include "cpu/base.hh"
  40 #include "cpu/thread_context.hh"
  41 #include "cpu/quiesce_event.hh"
  42 #include "arch/kernel_stats.hh"
  43 #include "sim/pseudo_inst.hh"
  44 #include "sim/serialize.hh"
  45 #include "sim/sim_exit.hh"
  46 #include "sim/stat_control.hh"
  47 #include "sim/stats.hh"
  48 #include "sim/system.hh"
  49 #include "sim/debug.hh"
  50 #include "sim/vptr.hh"
  51
  52 using namespace std;
  53
  54 using namespace Stats;
  55 using namespace TheISA;
  56
  57 namespace AlphaPseudo
  58 {
  59     void
  60     arm(ThreadContext *tc)
  61     {
  62         if (tc->getKernelStats())
  63             tc->getKernelStats()->arm();
  64     }
  65
  66     void
  67     quiesce(ThreadContext *tc)
  68     {
  69         if (!tc->getCpuPtr()->params->do_quiesce)
  70             return;
  71
  72         DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name());
  73
  74         tc->suspend();
  75         if (tc->getKernelStats())
  76             tc->getKernelStats()->quiesce();
  77     }
  78
  79     void
  80     quiesceNs(ThreadContext *tc, uint64_t ns)
  81     {
  82         if (!tc->getCpuPtr()->params->do_quiesce || ns == 0)
  83             return;
  84
  85         EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
  86
  87         Tick resume = curTick + Clock::Int::ns * ns;
  88
  89         if (quiesceEvent->scheduled())
  90             quiesceEvent->reschedule(resume);
  91         else
  92             quiesceEvent->schedule(resume);
  93
  94         DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n",
  95                 tc->getCpuPtr()->name(), ns, resume);
  96
  97         tc->suspend();
  98         if (tc->getKernelStats())
  99             tc->getKernelStats()->quiesce();
 100     }
 101
 102     void
 103     quiesceCycles(ThreadContext *tc, uint64_t cycles)
 104     {
 105         if (!tc->getCpuPtr()->params->do_quiesce || cycles == 0)
 106             return;
 107
 108         EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
 109
 110         Tick resume = curTick + tc->getCpuPtr()->cycles(cycles);
 111
 112         if (quiesceEvent->scheduled())
 113             quiesceEvent->reschedule(resume);
 114         else
 115             quiesceEvent->schedule(resume);
 116
 117         DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n",
 118                 tc->getCpuPtr()->name(), cycles, resume);
 119
 120         tc->suspend();
 121         if (tc->getKernelStats())
 122             tc->getKernelStats()->quiesce();
 123     }
 124
 125     uint64_t
 126     quiesceTime(ThreadContext *tc)
 127     {
 128         return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns;
 129     }
 130
 131     void
 132     m5exit_old(ThreadContext *tc)
 133     {
 134         exitSimLoop("m5_exit_old instruction encountered");
 135     }
 136
 137     void
 138     m5exit(ThreadContext *tc, Tick delay)
 139     {
 140         Tick when = curTick + delay * Clock::Int::ns;
 141         schedExitSimLoop("m5_exit instruction encountered", when);
 142     }
 143
 144     void
 145     loadsymbol(ThreadContext *tc)
 146     {
 147         const string &filename = tc->getCpuPtr()->system->params()->symbolfile;
 148         if (filename.empty()) {
 149             return;
 150         }
 151
 152         std::string buffer;
 153         ifstream file(filename.c_str());
 154
 155         if (!file)
 156             fatal("file error: Can't open symbol table file %s\n", filename);
 157
 158         while (!file.eof()) {
 159             getline(file, buffer);
 160
 161             if (buffer.empty())
 162                 continue;
 163
 164             int idx = buffer.find(' ');
 165             if (idx == string::npos)
 166                 continue;
 167
 168             string address = "0x" + buffer.substr(0, idx);
 169             eat_white(address);
 170             if (address.empty())
 171                 continue;
 172
 173             // Skip over letter and space
 174             string symbol = buffer.substr(idx + 3);
 175             eat_white(symbol);
 176             if (symbol.empty())
 177                 continue;
 178
 179             Addr addr;
 180             if (!to_number(address, addr))
 181                 continue;
 182
 183             if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
 184                 continue;
 185
 186
 187             DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
 188         }
 189         file.close();
 190     }
 191
 192     void
 193     resetstats(ThreadContext *tc, Tick delay, Tick period)
 194     {
 195         if (!tc->getCpuPtr()->params->do_statistics_insts)
 196             return;
 197
 198
 199         Tick when = curTick + delay * Clock::Int::ns;
 200         Tick repeat = period * Clock::Int::ns;
 201
 202         using namespace Stats;
 203         SetupEvent(Reset, when, repeat);
 204     }
 205
 206     void
 207     dumpstats(ThreadContext *tc, Tick delay, Tick period)
 208     {
 209         if (!tc->getCpuPtr()->params->do_statistics_insts)
 210             return;
 211
 212
 213         Tick when = curTick + delay * Clock::Int::ns;
 214         Tick repeat = period * Clock::Int::ns;
 215
 216         using namespace Stats;
 217         SetupEvent(Dump, when, repeat);
 218     }
 219
 220     void
 221     addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
 222     {
 223         char symb[100];
 224         CopyStringOut(tc, symb, symbolAddr, 100);
 225         std::string symbol(symb);
 226
 227         DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
 228
 229         tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
 230     }
 231
 232     void
 233     anBegin(ThreadContext *tc, uint64_t cur)
 234     {
 235         Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
 236                 0xFFFFFFFF, 0,0);
 237     }
 238
 239     void
 240     anWait(ThreadContext *tc, uint64_t cur, uint64_t wait)
 241     {
 242         Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
 243                 0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF);
 244     }
 245
 246
 247     void
 248     dumpresetstats(ThreadContext *tc, Tick delay, Tick period)
 249     {
 250         if (!tc->getCpuPtr()->params->do_statistics_insts)
 251             return;
 252
 253
 254         Tick when = curTick + delay * Clock::Int::ns;
 255         Tick repeat = period * Clock::Int::ns;
 256
 257         using namespace Stats;
 258         SetupEvent(Dump|Reset, when, repeat);
 259     }
 260
 261     void
 262     m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
 263     {
 264         if (!tc->getCpuPtr()->params->do_checkpoint_insts)
 265             return;
 266
 267         Tick when = curTick + delay * Clock::Int::ns;
 268         Tick repeat = period * Clock::Int::ns;
 269
 270         schedExitSimLoop("checkpoint", when, repeat);
 271     }
 272
 273     uint64_t
 274     readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
 275     {
 276         const string &file = tc->getSystemPtr()->params()->readfile;
 277         if (file.empty()) {
 278             return ULL(0);
 279         }
 280
 281         uint64_t result = 0;
 282
 283         int fd = ::open(file.c_str(), O_RDONLY, 0);
 284         if (fd < 0)
 285             panic("could not open file %s\n", file);
 286
 287         if (::lseek(fd, offset, SEEK_SET) < 0)
 288             panic("could not seek: %s", strerror(errno));
 289
 290         char *buf = new char[len];
 291         char *p = buf;
 292         while (len > 0) {
 293             int bytes = ::read(fd, p, len);
 294             if (bytes <= 0)
 295                 break;
 296
 297             p += bytes;
 298             result += bytes;
 299             len -= bytes;
 300         }
 301
 302         close(fd);
 303         CopyIn(tc, vaddr, buf, result);
 304         delete [] buf;
 305         return result;
 306     }
 307
 308     void debugbreak(ThreadContext *tc)
 309     {
 310         debug_break();
 311     }
 312
 313     void switchcpu(ThreadContext *tc)
 314     {
 315         exitSimLoop("switchcpu");
 316     }
 317 }