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