src/sim/process.cc

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