src/sim/process.cc

   1 /*
   2  * Copyright (c) 2012 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2001-2005 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Nathan Binkert
  41  *          Steve Reinhardt
  42  *          Ali Saidi
  43  */
  44
  45 #include <fcntl.h>
  46 #include <unistd.h>
  47
  48 #include <cstdio>
  49 #include <string>
  50
  51 #include "base/loader/object_file.hh"
  52 #include "base/loader/symtab.hh"
  53 #include "base/intmath.hh"
  54 #include "base/statistics.hh"
  55 #include "config/the_isa.hh"
  56 #include "cpu/thread_context.hh"
  57 #include "mem/page_table.hh"
  58 #include "mem/se_translating_port_proxy.hh"
  59 #include "params/LiveProcess.hh"
  60 #include "params/Process.hh"
  61 #include "sim/debug.hh"
  62 #include "sim/process.hh"
  63 #include "sim/process_impl.hh"
  64 #include "sim/stats.hh"
  65 #include "sim/syscall_emul.hh"
  66 #include "sim/system.hh"
  67
  68 #if THE_ISA == ALPHA_ISA
  69 #include "arch/alpha/linux/process.hh"
  70 #include "arch/alpha/tru64/process.hh"
  71 #elif THE_ISA == SPARC_ISA
  72 #include "arch/sparc/linux/process.hh"
  73 #include "arch/sparc/solaris/process.hh"
  74 #elif THE_ISA == MIPS_ISA
  75 #include "arch/mips/linux/process.hh"
  76 #elif THE_ISA == ARM_ISA
  77 #include "arch/arm/linux/process.hh"
  78 #elif THE_ISA == X86_ISA
  79 #include "arch/x86/linux/process.hh"
  80 #elif THE_ISA == POWER_ISA
  81 #include "arch/power/linux/process.hh"
  82 #else
  83 #error "THE_ISA not set"
  84 #endif
  85
  86
  87 using namespace std;
  88 using namespace TheISA;
  89
  90 // current number of allocated processes
  91 int num_processes = 0;
  92
  93 template<class IntType>
  94 AuxVector<IntType>::AuxVector(IntType type, IntType val)
  95 {
  96     a_type = TheISA::htog(type);
  97     a_val = TheISA::htog(val);
  98 }
  99
 100 template struct AuxVector<uint32_t>;
 101 template struct AuxVector<uint64_t>;
 102
 103 Process::Process(ProcessParams * params)
 104     : SimObject(params), system(params->system),
 105       max_stack_size(params->max_stack_size),
 106       M5_pid(system->allocatePID()),
 107       pTable(new PageTable(name(), M5_pid)),
 108       initVirtMem(system->getSystemPort(), this,
 109                   SETranslatingPortProxy::Always)
 110 {
 111     string in = params->input;
 112     string out = params->output;
 113     string err = params->errout;
 114
 115     // initialize file descriptors to default: same as simulator
 116     int stdin_fd, stdout_fd, stderr_fd;
 117
 118     if (in == "stdin" || in == "cin")
 119         stdin_fd = STDIN_FILENO;
 120     else if (in == "None")
 121         stdin_fd = -1;
 122     else
 123         stdin_fd = Process::openInputFile(in);
 124
 125     if (out == "stdout" || out == "cout")
 126         stdout_fd = STDOUT_FILENO;
 127     else if (out == "stderr" || out == "cerr")
 128         stdout_fd = STDERR_FILENO;
 129     else if (out == "None")
 130         stdout_fd = -1;
 131     else
 132         stdout_fd = Process::openOutputFile(out);
 133
 134     if (err == "stdout" || err == "cout")
 135         stderr_fd = STDOUT_FILENO;
 136     else if (err == "stderr" || err == "cerr")
 137         stderr_fd = STDERR_FILENO;
 138     else if (err == "None")
 139         stderr_fd = -1;
 140     else if (err == out)
 141         stderr_fd = stdout_fd;
 142     else
 143         stderr_fd = Process::openOutputFile(err);
 144
 145     // initialize first 3 fds (stdin, stdout, stderr)
 146     Process::FdMap *fdo = &fd_map[STDIN_FILENO];
 147     fdo->fd = stdin_fd;
 148     fdo->filename = in;
 149     fdo->flags = O_RDONLY;
 150     fdo->mode = -1;
 151     fdo->fileOffset = 0;
 152
 153     fdo =  &fd_map[STDOUT_FILENO];
 154     fdo->fd = stdout_fd;
 155     fdo->filename = out;
 156     fdo->flags =  O_WRONLY | O_CREAT | O_TRUNC;
 157     fdo->mode = 0774;
 158     fdo->fileOffset = 0;
 159
 160     fdo = &fd_map[STDERR_FILENO];
 161     fdo->fd = stderr_fd;
 162     fdo->filename = err;
 163     fdo->flags = O_WRONLY;
 164     fdo->mode = -1;
 165     fdo->fileOffset = 0;
 166
 167
 168     // mark remaining fds as free
 169     for (int i = 3; i <= MAX_FD; ++i) {
 170         Process::FdMap *fdo = &fd_map[i];
 171         fdo->fd = -1;
 172     }
 173
 174     mmap_start = mmap_end = 0;
 175     nxm_start = nxm_end = 0;
 176     // other parameters will be initialized when the program is loaded
 177 }
 178
 179
 180 void
 181 Process::regStats()
 182 {
 183     using namespace Stats;
 184
 185     num_syscalls
 186         .name(name() + ".num_syscalls")
 187         .desc("Number of system calls")
 188         ;
 189 }
 190
 191 //
 192 // static helper functions
 193 //
 194 int
 195 Process::openInputFile(const string &filename)
 196 {
 197     int fd = open(filename.c_str(), O_RDONLY);
 198
 199     if (fd == -1) {
 200         perror(NULL);
 201         cerr << "unable to open \"" << filename << "\" for reading\n";
 202         fatal("can't open input file");
 203     }
 204
 205     return fd;
 206 }
 207
 208
 209 int
 210 Process::openOutputFile(const string &filename)
 211 {
 212     int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664);
 213
 214     if (fd == -1) {
 215         perror(NULL);
 216         cerr << "unable to open \"" << filename << "\" for writing\n";
 217         fatal("can't open output file");
 218     }
 219
 220     return fd;
 221 }
 222
 223 ThreadContext *
 224 Process::findFreeContext()
 225 {
 226     int size = contextIds.size();
 227     ThreadContext *tc;
 228     for (int i = 0; i < size; ++i) {
 229         tc = system->getThreadContext(contextIds[i]);
 230         if (tc->status() == ThreadContext::Halted) {
 231             // inactive context, free to use
 232             return tc;
 233         }
 234     }
 235     return NULL;
 236 }
 237
 238 void
 239 Process::initState()
 240 {
 241     if (contextIds.empty())
 242         fatal("Process %s is not associated with any HW contexts!\n", name());
 243
 244     // first thread context for this process... initialize & enable
 245     ThreadContext *tc = system->getThreadContext(contextIds[0]);
 246
 247     // mark this context as active so it will start ticking.
 248     tc->activate(0);
 249 }
 250
 251 // map simulator fd sim_fd to target fd tgt_fd
 252 void
 253 Process::dup_fd(int sim_fd, int tgt_fd)
 254 {
 255     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 256         panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
 257
 258     Process::FdMap *fdo = &fd_map[tgt_fd];
 259     fdo->fd = sim_fd;
 260 }
 261
 262
 263 // generate new target fd for sim_fd
 264 int
 265 Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
 266 {
 267     // in case open() returns an error, don't allocate a new fd
 268     if (sim_fd == -1)
 269         return -1;
 270
 271     // find first free target fd
 272     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 273         Process::FdMap *fdo = &fd_map[free_fd];
 274         if (fdo->fd == -1) {
 275             fdo->fd = sim_fd;
 276             fdo->filename = filename;
 277             fdo->mode = mode;
 278             fdo->fileOffset = 0;
 279             fdo->flags = flags;
 280             fdo->isPipe = pipe;
 281             fdo->readPipeSource = 0;
 282             return free_fd;
 283         }
 284     }
 285
 286     panic("Process::alloc_fd: out of file descriptors!");
 287 }
 288
 289
 290 // free target fd (e.g., after close)
 291 void
 292 Process::free_fd(int tgt_fd)
 293 {
 294     Process::FdMap *fdo = &fd_map[tgt_fd];
 295     if (fdo->fd == -1)
 296         warn("Process::free_fd: request to free unused fd %d", tgt_fd);
 297
 298     fdo->fd = -1;
 299     fdo->filename = "NULL";
 300     fdo->mode = 0;
 301     fdo->fileOffset = 0;
 302     fdo->flags = 0;
 303     fdo->isPipe = false;
 304     fdo->readPipeSource = 0;
 305 }
 306
 307
 308 // look up simulator fd for given target fd
 309 int
 310 Process::sim_fd(int tgt_fd)
 311 {
 312     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 313         return -1;
 314
 315     return fd_map[tgt_fd].fd;
 316 }
 317
 318 Process::FdMap *
 319 Process::sim_fd_obj(int tgt_fd)
 320 {
 321     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 322         return NULL;
 323
 324     return &fd_map[tgt_fd];
 325 }
 326
 327 void
 328 Process::allocateMem(Addr vaddr, int64_t size, bool clobber)
 329 {
 330     int npages = divCeil(size, (int64_t)VMPageSize);
 331     Addr paddr = system->allocPhysPages(npages);
 332     pTable->map(vaddr, paddr, size, clobber);
 333 }
 334
 335 bool
 336 Process::fixupStackFault(Addr vaddr)
 337 {
 338     // Check if this is already on the stack and there's just no page there
 339     // yet.
 340     if (vaddr >= stack_min && vaddr < stack_base) {
 341         allocateMem(roundDown(vaddr, VMPageSize), VMPageSize);
 342         return true;
 343     }
 344
 345     // We've accessed the next page of the stack, so extend it to include
 346     // this address.
 347     if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
 348         while (vaddr < stack_min) {
 349             stack_min -= TheISA::PageBytes;
 350             if (stack_base - stack_min > max_stack_size)
 351                 fatal("Maximum stack size exceeded\n");
 352             if (stack_base - stack_min > 8 * 1024 * 1024)
 353                 fatal("Over max stack size for one thread\n");
 354             allocateMem(stack_min, TheISA::PageBytes);
 355             inform("Increasing stack size by one page.");
 356         };
 357         return true;
 358     }
 359     return false;
 360 }
 361
 362 // find all offsets for currently open files and save them
 363 void
 364 Process::fix_file_offsets()
 365 {
 366     Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
 367     Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
 368     Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
 369     string in = fdo_stdin->filename;
 370     string out = fdo_stdout->filename;
 371     string err = fdo_stderr->filename;
 372
 373     // initialize file descriptors to default: same as simulator
 374     int stdin_fd, stdout_fd, stderr_fd;
 375
 376     if (in == "stdin" || in == "cin")
 377         stdin_fd = STDIN_FILENO;
 378     else if (in == "None")
 379         stdin_fd = -1;
 380     else {
 381         // open standard in and seek to the right location
 382         stdin_fd = Process::openInputFile(in);
 383         if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
 384             panic("Unable to seek to correct location in file: %s", in);
 385     }
 386
 387     if (out == "stdout" || out == "cout")
 388         stdout_fd = STDOUT_FILENO;
 389     else if (out == "stderr" || out == "cerr")
 390         stdout_fd = STDERR_FILENO;
 391     else if (out == "None")
 392         stdout_fd = -1;
 393     else {
 394         stdout_fd = Process::openOutputFile(out);
 395         if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
 396             panic("Unable to seek to correct location in file: %s", out);
 397     }
 398
 399     if (err == "stdout" || err == "cout")
 400         stderr_fd = STDOUT_FILENO;
 401     else if (err == "stderr" || err == "cerr")
 402         stderr_fd = STDERR_FILENO;
 403     else if (err == "None")
 404         stderr_fd = -1;
 405     else if (err == out)
 406         stderr_fd = stdout_fd;
 407     else {
 408         stderr_fd = Process::openOutputFile(err);
 409         if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
 410             panic("Unable to seek to correct location in file: %s", err);
 411     }
 412
 413     fdo_stdin->fd = stdin_fd;
 414     fdo_stdout->fd = stdout_fd;
 415     fdo_stderr->fd = stderr_fd;
 416
 417
 418     for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
 419         Process::FdMap *fdo = &fd_map[free_fd];
 420         if (fdo->fd != -1) {
 421             if (fdo->isPipe){
 422                 if (fdo->filename == "PIPE-WRITE")
 423                     continue;
 424                 else {
 425                     assert (fdo->filename == "PIPE-READ");
 426                     //create a new pipe
 427                     int fds[2];
 428                     int pipe_retval = pipe(fds);
 429
 430                     if (pipe_retval < 0) {
 431                         // error
 432                         panic("Unable to create new pipe.");
 433                     }
 434                     fdo->fd = fds[0]; //set read pipe
 435                     Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
 436                     if (fdo_write->filename != "PIPE-WRITE")
 437                         panic ("Couldn't find write end of the pipe");
 438
 439                     fdo_write->fd = fds[1];//set write pipe
 440                }
 441             } else {
 442                 //Open file
 443                 int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
 444
 445                 if (fd == -1)
 446                     panic("Unable to open file: %s", fdo->filename);
 447                 fdo->fd = fd;
 448
 449                 //Seek to correct location before checkpoint
 450                 if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
 451                     panic("Unable to seek to correct location in file: %s",
 452                           fdo->filename);
 453             }
 454         }
 455     }
 456 }
 457
 458 void
 459 Process::find_file_offsets()
 460 {
 461     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 462         Process::FdMap *fdo = &fd_map[free_fd];
 463         if (fdo->fd != -1) {
 464             fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
 465         } else {
 466                 fdo->filename = "NULL";
 467                 fdo->fileOffset = 0;
 468         }
 469     }
 470 }
 471
 472 void
 473 Process::setReadPipeSource(int read_pipe_fd, int source_fd)
 474 {
 475     Process::FdMap *fdo = &fd_map[read_pipe_fd];
 476     fdo->readPipeSource = source_fd;
 477 }
 478
 479 void
 480 Process::FdMap::serialize(std::ostream &os)
 481 {
 482     SERIALIZE_SCALAR(fd);
 483     SERIALIZE_SCALAR(isPipe);
 484     SERIALIZE_SCALAR(filename);
 485     SERIALIZE_SCALAR(flags);
 486     SERIALIZE_SCALAR(readPipeSource);
 487     SERIALIZE_SCALAR(fileOffset);
 488 }
 489
 490 void
 491 Process::FdMap::unserialize(Checkpoint *cp, const std::string &section)
 492 {
 493     UNSERIALIZE_SCALAR(fd);
 494     UNSERIALIZE_SCALAR(isPipe);
 495     UNSERIALIZE_SCALAR(filename);
 496     UNSERIALIZE_SCALAR(flags);
 497     UNSERIALIZE_SCALAR(readPipeSource);
 498     UNSERIALIZE_SCALAR(fileOffset);
 499 }
 500
 501 void
 502 Process::serialize(std::ostream &os)
 503 {
 504     SERIALIZE_SCALAR(brk_point);
 505     SERIALIZE_SCALAR(stack_base);
 506     SERIALIZE_SCALAR(stack_size);
 507     SERIALIZE_SCALAR(stack_min);
 508     SERIALIZE_SCALAR(next_thread_stack_base);
 509     SERIALIZE_SCALAR(mmap_start);
 510     SERIALIZE_SCALAR(mmap_end);
 511     SERIALIZE_SCALAR(nxm_start);
 512     SERIALIZE_SCALAR(nxm_end);
 513     find_file_offsets();
 514     pTable->serialize(os);
 515     for (int x = 0; x <= MAX_FD; x++) {
 516         nameOut(os, csprintf("%s.FdMap%d", name(), x));
 517         fd_map[x].serialize(os);
 518     }
 519     SERIALIZE_SCALAR(M5_pid);
 520
 521 }
 522
 523 void
 524 Process::unserialize(Checkpoint *cp, const std::string &section)
 525 {
 526     UNSERIALIZE_SCALAR(brk_point);
 527     UNSERIALIZE_SCALAR(stack_base);
 528     UNSERIALIZE_SCALAR(stack_size);
 529     UNSERIALIZE_SCALAR(stack_min);
 530     UNSERIALIZE_SCALAR(next_thread_stack_base);
 531     UNSERIALIZE_SCALAR(mmap_start);
 532     UNSERIALIZE_SCALAR(mmap_end);
 533     UNSERIALIZE_SCALAR(nxm_start);
 534     UNSERIALIZE_SCALAR(nxm_end);
 535     pTable->unserialize(cp, section);
 536     for (int x = 0; x <= MAX_FD; x++) {
 537         fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
 538     }
 539     fix_file_offsets();
 540     UNSERIALIZE_OPT_SCALAR(M5_pid);
 541     // The above returns a bool so that you could do something if you don't
 542     // find the param in the checkpoint if you wanted to, like set a default
 543     // but in this case we'll just stick with the instantianted value if not
 544     // found.
 545 }
 546
 547
 548 ////////////////////////////////////////////////////////////////////////
 549 //
 550 // LiveProcess member definitions
 551 //
 552 ////////////////////////////////////////////////////////////////////////
 553
 554
 555 LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
 556     : Process(params), objFile(_objFile),
 557       argv(params->cmd), envp(params->env), cwd(params->cwd)
 558 {
 559     __uid = params->uid;
 560     __euid = params->euid;
 561     __gid = params->gid;
 562     __egid = params->egid;
 563     __pid = params->pid;
 564     __ppid = params->ppid;
 565
 566     prog_fname = params->cmd[0];
 567
 568     // load up symbols, if any... these may be used for debugging or
 569     // profiling.
 570     if (!debugSymbolTable) {
 571         debugSymbolTable = new SymbolTable();
 572         if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
 573             !objFile->loadLocalSymbols(debugSymbolTable)) {
 574             // didn't load any symbols
 575             delete debugSymbolTable;
 576             debugSymbolTable = NULL;
 577         }
 578     }
 579 }
 580
 581 void
 582 LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
 583 {
 584     num_syscalls++;
 585
 586     SyscallDesc *desc = getDesc(callnum);
 587     if (desc == NULL)
 588         fatal("Syscall %d out of range", callnum);
 589
 590     desc->doSyscall(callnum, this, tc);
 591 }
 592
 593 IntReg
 594 LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
 595 {
 596     return getSyscallArg(tc, i);
 597 }
 598
 599 LiveProcess *
 600 LiveProcess::create(LiveProcessParams * params)
 601 {
 602     LiveProcess *process = NULL;
 603
 604     string executable =
 605         params->executable == "" ? params->cmd[0] : params->executable;
 606     ObjectFile *objFile = createObjectFile(executable);
 607     if (objFile == NULL) {
 608         fatal("Can't load object file %s", executable);
 609     }
 610
 611     if (objFile->isDynamic())
 612        fatal("Object file is a dynamic executable however only static "
 613              "executables are supported!\n       Please recompile your "
 614              "executable as a static binary and try again.\n");
 615
 616 #if THE_ISA == ALPHA_ISA
 617     if (objFile->getArch() != ObjectFile::Alpha)
 618         fatal("Object file architecture does not match compiled ISA (Alpha).");
 619
 620     switch (objFile->getOpSys()) {
 621       case ObjectFile::Tru64:
 622         process = new AlphaTru64Process(params, objFile);
 623         break;
 624
 625       case ObjectFile::UnknownOpSys:
 626         warn("Unknown operating system; assuming Linux.");
 627         // fall through
 628       case ObjectFile::Linux:
 629         process = new AlphaLinuxProcess(params, objFile);
 630         break;
 631
 632       default:
 633         fatal("Unknown/unsupported operating system.");
 634     }
 635 #elif THE_ISA == SPARC_ISA
 636     if (objFile->getArch() != ObjectFile::SPARC64 &&
 637         objFile->getArch() != ObjectFile::SPARC32)
 638         fatal("Object file architecture does not match compiled ISA (SPARC).");
 639     switch (objFile->getOpSys()) {
 640       case ObjectFile::UnknownOpSys:
 641         warn("Unknown operating system; assuming Linux.");
 642         // fall through
 643       case ObjectFile::Linux:
 644         if (objFile->getArch() == ObjectFile::SPARC64) {
 645             process = new Sparc64LinuxProcess(params, objFile);
 646         } else {
 647             process = new Sparc32LinuxProcess(params, objFile);
 648         }
 649         break;
 650
 651
 652       case ObjectFile::Solaris:
 653         process = new SparcSolarisProcess(params, objFile);
 654         break;
 655
 656       default:
 657         fatal("Unknown/unsupported operating system.");
 658     }
 659 #elif THE_ISA == X86_ISA
 660     if (objFile->getArch() != ObjectFile::X86_64 &&
 661         objFile->getArch() != ObjectFile::I386)
 662         fatal("Object file architecture does not match compiled ISA (x86).");
 663     switch (objFile->getOpSys()) {
 664       case ObjectFile::UnknownOpSys:
 665         warn("Unknown operating system; assuming Linux.");
 666         // fall through
 667       case ObjectFile::Linux:
 668         if (objFile->getArch() == ObjectFile::X86_64) {
 669             process = new X86_64LinuxProcess(params, objFile);
 670         } else {
 671             process = new I386LinuxProcess(params, objFile);
 672         }
 673         break;
 674
 675       default:
 676         fatal("Unknown/unsupported operating system.");
 677     }
 678 #elif THE_ISA == MIPS_ISA
 679     if (objFile->getArch() != ObjectFile::Mips)
 680         fatal("Object file architecture does not match compiled ISA (MIPS).");
 681     switch (objFile->getOpSys()) {
 682       case ObjectFile::UnknownOpSys:
 683         warn("Unknown operating system; assuming Linux.");
 684         // fall through
 685       case ObjectFile::Linux:
 686         process = new MipsLinuxProcess(params, objFile);
 687         break;
 688
 689       default:
 690         fatal("Unknown/unsupported operating system.");
 691     }
 692 #elif THE_ISA == ARM_ISA
 693     if (objFile->getArch() != ObjectFile::Arm &&
 694         objFile->getArch() != ObjectFile::Thumb)
 695         fatal("Object file architecture does not match compiled ISA (ARM).");
 696     switch (objFile->getOpSys()) {
 697       case ObjectFile::UnknownOpSys:
 698         warn("Unknown operating system; assuming Linux.");
 699         // fall through
 700       case ObjectFile::Linux:
 701         process = new ArmLinuxProcess(params, objFile, objFile->getArch());
 702         break;
 703       case ObjectFile::LinuxArmOABI:
 704         fatal("M5 does not support ARM OABI binaries. Please recompile with an"
 705               " EABI compiler.");
 706       default:
 707         fatal("Unknown/unsupported operating system.");
 708     }
 709 #elif THE_ISA == POWER_ISA
 710     if (objFile->getArch() != ObjectFile::Power)
 711         fatal("Object file architecture does not match compiled ISA (Power).");
 712     switch (objFile->getOpSys()) {
 713       case ObjectFile::UnknownOpSys:
 714         warn("Unknown operating system; assuming Linux.");
 715         // fall through
 716       case ObjectFile::Linux:
 717         process = new PowerLinuxProcess(params, objFile);
 718         break;
 719
 720       default:
 721         fatal("Unknown/unsupported operating system.");
 722     }
 723 #else
 724 #error "THE_ISA not set"
 725 #endif
 726
 727     if (process == NULL)
 728         fatal("Unknown error creating process object.");
 729     return process;
 730 }
 731
 732 LiveProcess *
 733 LiveProcessParams::create()
 734 {
 735     return LiveProcess::create(this);
 736 }