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(name(), M5_pid);
 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 void
 332 Process::allocateMem(Addr vaddr, int64_t size, bool clobber)
 333 {
 334     int npages = divCeil(size, (int64_t)VMPageSize);
 335     Addr paddr = system->allocPhysPages(npages);
 336     pTable->map(vaddr, paddr, size, clobber);
 337 }
 338
 339 bool
 340 Process::fixupStackFault(Addr vaddr)
 341 {
 342     // Check if this is already on the stack and there's just no page there
 343     // yet.
 344     if (vaddr >= stack_min && vaddr < stack_base) {
 345         allocateMem(roundDown(vaddr, VMPageSize), VMPageSize);
 346         return true;
 347     }
 348
 349     // We've accessed the next page of the stack, so extend it to include
 350     // this address.
 351     if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
 352         while (vaddr < stack_min) {
 353             stack_min -= TheISA::PageBytes;
 354             if (stack_base - stack_min > max_stack_size)
 355                 fatal("Maximum stack size exceeded\n");
 356             if (stack_base - stack_min > 8 * 1024 * 1024)
 357                 fatal("Over max stack size for one thread\n");
 358             allocateMem(stack_min, TheISA::PageBytes);
 359             inform("Increasing stack size by one page.");
 360         };
 361         return true;
 362     }
 363     warn("Not extending stack: address %#x isn't at the end of the stack.",
 364         vaddr);
 365     return false;
 366 }
 367
 368 // find all offsets for currently open files and save them
 369 void
 370 Process::fix_file_offsets()
 371 {
 372     Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
 373     Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
 374     Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
 375     string in = fdo_stdin->filename;
 376     string out = fdo_stdout->filename;
 377     string err = fdo_stderr->filename;
 378
 379     // initialize file descriptors to default: same as simulator
 380     int stdin_fd, stdout_fd, stderr_fd;
 381
 382     if (in == "stdin" || in == "cin")
 383         stdin_fd = STDIN_FILENO;
 384     else if (in == "None")
 385         stdin_fd = -1;
 386     else {
 387         // open standard in and seek to the right location
 388         stdin_fd = Process::openInputFile(in);
 389         if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
 390             panic("Unable to seek to correct location in file: %s", in);
 391     }
 392
 393     if (out == "stdout" || out == "cout")
 394         stdout_fd = STDOUT_FILENO;
 395     else if (out == "stderr" || out == "cerr")
 396         stdout_fd = STDERR_FILENO;
 397     else if (out == "None")
 398         stdout_fd = -1;
 399     else {
 400         stdout_fd = Process::openOutputFile(out);
 401         if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
 402             panic("Unable to seek to correct location in file: %s", out);
 403     }
 404
 405     if (err == "stdout" || err == "cout")
 406         stderr_fd = STDOUT_FILENO;
 407     else if (err == "stderr" || err == "cerr")
 408         stderr_fd = STDERR_FILENO;
 409     else if (err == "None")
 410         stderr_fd = -1;
 411     else if (err == out)
 412         stderr_fd = stdout_fd;
 413     else {
 414         stderr_fd = Process::openOutputFile(err);
 415         if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
 416             panic("Unable to seek to correct location in file: %s", err);
 417     }
 418
 419     fdo_stdin->fd = stdin_fd;
 420     fdo_stdout->fd = stdout_fd;
 421     fdo_stderr->fd = stderr_fd;
 422
 423
 424     for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
 425         Process::FdMap *fdo = &fd_map[free_fd];
 426         if (fdo->fd != -1) {
 427             if (fdo->isPipe){
 428                 if (fdo->filename == "PIPE-WRITE")
 429                     continue;
 430                 else {
 431                     assert (fdo->filename == "PIPE-READ");
 432                     //create a new pipe
 433                     int fds[2];
 434                     int pipe_retval = pipe(fds);
 435
 436                     if (pipe_retval < 0) {
 437                         // error
 438                         panic("Unable to create new pipe.");
 439                     }
 440                     fdo->fd = fds[0]; //set read pipe
 441                     Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
 442                     if (fdo_write->filename != "PIPE-WRITE")
 443                         panic ("Couldn't find write end of the pipe");
 444
 445                     fdo_write->fd = fds[1];//set write pipe
 446                }
 447             } else {
 448                 //Open file
 449                 int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
 450
 451                 if (fd == -1)
 452                     panic("Unable to open file: %s", fdo->filename);
 453                 fdo->fd = fd;
 454
 455                 //Seek to correct location before checkpoint
 456                 if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
 457                     panic("Unable to seek to correct location in file: %s",
 458                           fdo->filename);
 459             }
 460         }
 461     }
 462 }
 463
 464 void
 465 Process::find_file_offsets()
 466 {
 467     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 468         Process::FdMap *fdo = &fd_map[free_fd];
 469         if (fdo->fd != -1) {
 470             fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
 471         } else {
 472                 fdo->filename = "NULL";
 473                 fdo->fileOffset = 0;
 474         }
 475     }
 476 }
 477
 478 void
 479 Process::setReadPipeSource(int read_pipe_fd, int source_fd)
 480 {
 481     Process::FdMap *fdo = &fd_map[read_pipe_fd];
 482     fdo->readPipeSource = source_fd;
 483 }
 484
 485 void
 486 Process::FdMap::serialize(std::ostream &os)
 487 {
 488     SERIALIZE_SCALAR(fd);
 489     SERIALIZE_SCALAR(isPipe);
 490     SERIALIZE_SCALAR(filename);
 491     SERIALIZE_SCALAR(flags);
 492     SERIALIZE_SCALAR(readPipeSource);
 493     SERIALIZE_SCALAR(fileOffset);
 494 }
 495
 496 void
 497 Process::FdMap::unserialize(Checkpoint *cp, const std::string &section)
 498 {
 499     UNSERIALIZE_SCALAR(fd);
 500     UNSERIALIZE_SCALAR(isPipe);
 501     UNSERIALIZE_SCALAR(filename);
 502     UNSERIALIZE_SCALAR(flags);
 503     UNSERIALIZE_SCALAR(readPipeSource);
 504     UNSERIALIZE_SCALAR(fileOffset);
 505 }
 506
 507 void
 508 Process::serialize(std::ostream &os)
 509 {
 510     SERIALIZE_SCALAR(brk_point);
 511     SERIALIZE_SCALAR(stack_base);
 512     SERIALIZE_SCALAR(stack_size);
 513     SERIALIZE_SCALAR(stack_min);
 514     SERIALIZE_SCALAR(next_thread_stack_base);
 515     SERIALIZE_SCALAR(mmap_start);
 516     SERIALIZE_SCALAR(mmap_end);
 517     SERIALIZE_SCALAR(nxm_start);
 518     SERIALIZE_SCALAR(nxm_end);
 519     find_file_offsets();
 520     pTable->serialize(os);
 521     for (int x = 0; x <= MAX_FD; x++) {
 522         nameOut(os, csprintf("%s.FdMap%d", name(), x));
 523         fd_map[x].serialize(os);
 524     }
 525     SERIALIZE_SCALAR(M5_pid);
 526
 527 }
 528
 529 void
 530 Process::unserialize(Checkpoint *cp, const std::string &section)
 531 {
 532     UNSERIALIZE_SCALAR(brk_point);
 533     UNSERIALIZE_SCALAR(stack_base);
 534     UNSERIALIZE_SCALAR(stack_size);
 535     UNSERIALIZE_SCALAR(stack_min);
 536     UNSERIALIZE_SCALAR(next_thread_stack_base);
 537     UNSERIALIZE_SCALAR(mmap_start);
 538     UNSERIALIZE_SCALAR(mmap_end);
 539     UNSERIALIZE_SCALAR(nxm_start);
 540     UNSERIALIZE_SCALAR(nxm_end);
 541     pTable->unserialize(cp, section);
 542     for (int x = 0; x <= MAX_FD; x++) {
 543         fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
 544     }
 545     fix_file_offsets();
 546     UNSERIALIZE_OPT_SCALAR(M5_pid);
 547     // The above returns a bool so that you could do something if you don't
 548     // find the param in the checkpoint if you wanted to, like set a default
 549     // but in this case we'll just stick with the instantianted value if not
 550     // found.
 551 }
 552
 553
 554 ////////////////////////////////////////////////////////////////////////
 555 //
 556 // LiveProcess member definitions
 557 //
 558 ////////////////////////////////////////////////////////////////////////
 559
 560
 561 LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
 562     : Process(params), objFile(_objFile),
 563       argv(params->cmd), envp(params->env), cwd(params->cwd)
 564 {
 565     __uid = params->uid;
 566     __euid = params->euid;
 567     __gid = params->gid;
 568     __egid = params->egid;
 569     __pid = params->pid;
 570     __ppid = params->ppid;
 571
 572     prog_fname = params->cmd[0];
 573
 574     // load up symbols, if any... these may be used for debugging or
 575     // profiling.
 576     if (!debugSymbolTable) {
 577         debugSymbolTable = new SymbolTable();
 578         if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
 579             !objFile->loadLocalSymbols(debugSymbolTable)) {
 580             // didn't load any symbols
 581             delete debugSymbolTable;
 582             debugSymbolTable = NULL;
 583         }
 584     }
 585 }
 586
 587 void
 588 LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
 589 {
 590     num_syscalls++;
 591
 592     SyscallDesc *desc = getDesc(callnum);
 593     if (desc == NULL)
 594         fatal("Syscall %d out of range", callnum);
 595
 596     desc->doSyscall(callnum, this, tc);
 597 }
 598
 599 IntReg
 600 LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
 601 {
 602     return getSyscallArg(tc, i);
 603 }
 604
 605 LiveProcess *
 606 LiveProcess::create(LiveProcessParams * params)
 607 {
 608     LiveProcess *process = NULL;
 609
 610     string executable =
 611         params->executable == "" ? params->cmd[0] : params->executable;
 612     ObjectFile *objFile = createObjectFile(executable);
 613     if (objFile == NULL) {
 614         fatal("Can't load object file %s", executable);
 615     }
 616
 617     if (objFile->isDynamic())
 618        fatal("Object file is a dynamic executable however only static "
 619              "executables are supported!\n       Please recompile your "
 620              "executable as a static binary and try again.\n");
 621
 622 #if THE_ISA == ALPHA_ISA
 623     if (objFile->getArch() != ObjectFile::Alpha)
 624         fatal("Object file architecture does not match compiled ISA (Alpha).");
 625
 626     switch (objFile->getOpSys()) {
 627       case ObjectFile::Tru64:
 628         process = new AlphaTru64Process(params, objFile);
 629         break;
 630
 631       case ObjectFile::UnknownOpSys:
 632         warn("Unknown operating system; assuming Linux.");
 633         // fall through
 634       case ObjectFile::Linux:
 635         process = new AlphaLinuxProcess(params, objFile);
 636         break;
 637
 638       default:
 639         fatal("Unknown/unsupported operating system.");
 640     }
 641 #elif THE_ISA == SPARC_ISA
 642     if (objFile->getArch() != ObjectFile::SPARC64 &&
 643         objFile->getArch() != ObjectFile::SPARC32)
 644         fatal("Object file architecture does not match compiled ISA (SPARC).");
 645     switch (objFile->getOpSys()) {
 646       case ObjectFile::UnknownOpSys:
 647         warn("Unknown operating system; assuming Linux.");
 648         // fall through
 649       case ObjectFile::Linux:
 650         if (objFile->getArch() == ObjectFile::SPARC64) {
 651             process = new Sparc64LinuxProcess(params, objFile);
 652         } else {
 653             process = new Sparc32LinuxProcess(params, objFile);
 654         }
 655         break;
 656
 657
 658       case ObjectFile::Solaris:
 659         process = new SparcSolarisProcess(params, objFile);
 660         break;
 661
 662       default:
 663         fatal("Unknown/unsupported operating system.");
 664     }
 665 #elif THE_ISA == X86_ISA
 666     if (objFile->getArch() != ObjectFile::X86_64 &&
 667         objFile->getArch() != ObjectFile::I386)
 668         fatal("Object file architecture does not match compiled ISA (x86).");
 669     switch (objFile->getOpSys()) {
 670       case ObjectFile::UnknownOpSys:
 671         warn("Unknown operating system; assuming Linux.");
 672         // fall through
 673       case ObjectFile::Linux:
 674         if (objFile->getArch() == ObjectFile::X86_64) {
 675             process = new X86_64LinuxProcess(params, objFile);
 676         } else {
 677             process = new I386LinuxProcess(params, objFile);
 678         }
 679         break;
 680
 681       default:
 682         fatal("Unknown/unsupported operating system.");
 683     }
 684 #elif THE_ISA == MIPS_ISA
 685     if (objFile->getArch() != ObjectFile::Mips)
 686         fatal("Object file architecture does not match compiled ISA (MIPS).");
 687     switch (objFile->getOpSys()) {
 688       case ObjectFile::UnknownOpSys:
 689         warn("Unknown operating system; assuming Linux.");
 690         // fall through
 691       case ObjectFile::Linux:
 692         process = new MipsLinuxProcess(params, objFile);
 693         break;
 694
 695       default:
 696         fatal("Unknown/unsupported operating system.");
 697     }
 698 #elif THE_ISA == ARM_ISA
 699     if (objFile->getArch() != ObjectFile::Arm &&
 700         objFile->getArch() != ObjectFile::Thumb)
 701         fatal("Object file architecture does not match compiled ISA (ARM).");
 702     switch (objFile->getOpSys()) {
 703       case ObjectFile::UnknownOpSys:
 704         warn("Unknown operating system; assuming Linux.");
 705         // fall through
 706       case ObjectFile::Linux:
 707         process = new ArmLinuxProcess(params, objFile, objFile->getArch());
 708         break;
 709       case ObjectFile::LinuxArmOABI:
 710         fatal("M5 does not support ARM OABI binaries. Please recompile with an"
 711               " EABI compiler.");
 712       default:
 713         fatal("Unknown/unsupported operating system.");
 714     }
 715 #elif THE_ISA == POWER_ISA
 716     if (objFile->getArch() != ObjectFile::Power)
 717         fatal("Object file architecture does not match compiled ISA (Power).");
 718     switch (objFile->getOpSys()) {
 719       case ObjectFile::UnknownOpSys:
 720         warn("Unknown operating system; assuming Linux.");
 721         // fall through
 722       case ObjectFile::Linux:
 723         process = new PowerLinuxProcess(params, objFile);
 724         break;
 725
 726       default:
 727         fatal("Unknown/unsupported operating system.");
 728     }
 729 #else
 730 #error "THE_ISA not set"
 731 #endif
 732
 733
 734     if (process == NULL)
 735         fatal("Unknown error creating process object.");
 736     return process;
 737 }
 738
 739 LiveProcess *
 740 LiveProcessParams::create()
 741 {
 742     return LiveProcess::create(this);
 743 }