src/sim/process.cc

   1 /*
   2  * Copyright (c) 2014 Advanced Micro Devices, Inc.
   3  * Copyright (c) 2012 ARM Limited
   4  * All rights reserved
   5  *
   6  * The license below extends only to copyright in the software and shall
   7  * not be construed as granting a license to any other intellectual
   8  * property including but not limited to intellectual property relating
   9  * to a hardware implementation of the functionality of the software
  10  * licensed hereunder.  You may use the software subject to the license
  11  * terms below provided that you ensure that this notice is replicated
  12  * unmodified and in its entirety in all distributions of the software,
  13  * modified or unmodified, in source code or in binary form.
  14  *
  15  * Copyright (c) 2001-2005 The Regents of The University of Michigan
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions are
  20  * met: redistributions of source code must retain the above copyright
  21  * notice, this list of conditions and the following disclaimer;
  22  * redistributions in binary form must reproduce the above copyright
  23  * notice, this list of conditions and the following disclaimer in the
  24  * documentation and/or other materials provided with the distribution;
  25  * neither the name of the copyright holders nor the names of its
  26  * contributors may be used to endorse or promote products derived from
  27  * this software without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  30  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  31  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  32  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  33  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  34  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  35  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  36  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  37  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  38  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  39  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  40  *
  41  * Authors: Nathan Binkert
  42  *          Steve Reinhardt
  43  *          Ali Saidi
  44  */
  45
  46 #include <fcntl.h>
  47 #include <unistd.h>
  48
  49 #include <cstdio>
  50 #include <string>
  51
  52 #include "base/loader/object_file.hh"
  53 #include "base/loader/symtab.hh"
  54 #include "base/intmath.hh"
  55 #include "base/statistics.hh"
  56 #include "config/the_isa.hh"
  57 #include "cpu/thread_context.hh"
  58 #include "mem/page_table.hh"
  59 #include "mem/multi_level_page_table.hh"
  60 #include "mem/se_translating_port_proxy.hh"
  61 #include "params/LiveProcess.hh"
  62 #include "params/Process.hh"
  63 #include "sim/debug.hh"
  64 #include "sim/process.hh"
  65 #include "sim/process_impl.hh"
  66 #include "sim/stats.hh"
  67 #include "sim/syscall_emul.hh"
  68 #include "sim/system.hh"
  69
  70 #if THE_ISA == ALPHA_ISA
  71 #include "arch/alpha/linux/process.hh"
  72 #include "arch/alpha/tru64/process.hh"
  73 #elif THE_ISA == SPARC_ISA
  74 #include "arch/sparc/linux/process.hh"
  75 #include "arch/sparc/solaris/process.hh"
  76 #elif THE_ISA == MIPS_ISA
  77 #include "arch/mips/linux/process.hh"
  78 #elif THE_ISA == ARM_ISA
  79 #include "arch/arm/linux/process.hh"
  80 #elif THE_ISA == X86_ISA
  81 #include "arch/x86/linux/process.hh"
  82 #elif THE_ISA == POWER_ISA
  83 #include "arch/power/linux/process.hh"
  84 #else
  85 #error "THE_ISA not set"
  86 #endif
  87
  88
  89 using namespace std;
  90 using namespace TheISA;
  91
  92 // current number of allocated processes
  93 int num_processes = 0;
  94
  95 template<class IntType>
  96 AuxVector<IntType>::AuxVector(IntType type, IntType val)
  97 {
  98     a_type = TheISA::htog(type);
  99     a_val = TheISA::htog(val);
 100 }
 101
 102 template struct AuxVector<uint32_t>;
 103 template struct AuxVector<uint64_t>;
 104
 105 Process::Process(ProcessParams * params)
 106     : SimObject(params), system(params->system),
 107       max_stack_size(params->max_stack_size),
 108       M5_pid(system->allocatePID()),
 109       useArchPT(params->useArchPT),
 110       pTable(useArchPT ?
 111         static_cast<PageTableBase *>(new ArchPageTable(name(), M5_pid, system)) :
 112         static_cast<PageTableBase *>(new FuncPageTable(name(), M5_pid)) ),
 113       initVirtMem(system->getSystemPort(), this,
 114                   SETranslatingPortProxy::Always)
 115 {
 116     string in = params->input;
 117     string out = params->output;
 118     string err = params->errout;
 119
 120     // initialize file descriptors to default: same as simulator
 121     int stdin_fd, stdout_fd, stderr_fd;
 122
 123     if (in == "stdin" || in == "cin")
 124         stdin_fd = STDIN_FILENO;
 125     else if (in == "None")
 126         stdin_fd = -1;
 127     else
 128         stdin_fd = Process::openInputFile(in);
 129
 130     if (out == "stdout" || out == "cout")
 131         stdout_fd = STDOUT_FILENO;
 132     else if (out == "stderr" || out == "cerr")
 133         stdout_fd = STDERR_FILENO;
 134     else if (out == "None")
 135         stdout_fd = -1;
 136     else
 137         stdout_fd = Process::openOutputFile(out);
 138
 139     if (err == "stdout" || err == "cout")
 140         stderr_fd = STDOUT_FILENO;
 141     else if (err == "stderr" || err == "cerr")
 142         stderr_fd = STDERR_FILENO;
 143     else if (err == "None")
 144         stderr_fd = -1;
 145     else if (err == out)
 146         stderr_fd = stdout_fd;
 147     else
 148         stderr_fd = Process::openOutputFile(err);
 149
 150     // initialize first 3 fds (stdin, stdout, stderr)
 151     Process::FdMap *fdo = &fd_map[STDIN_FILENO];
 152     fdo->fd = stdin_fd;
 153     fdo->filename = in;
 154     fdo->flags = O_RDONLY;
 155     fdo->mode = -1;
 156     fdo->fileOffset = 0;
 157
 158     fdo =  &fd_map[STDOUT_FILENO];
 159     fdo->fd = stdout_fd;
 160     fdo->filename = out;
 161     fdo->flags =  O_WRONLY | O_CREAT | O_TRUNC;
 162     fdo->mode = 0774;
 163     fdo->fileOffset = 0;
 164
 165     fdo = &fd_map[STDERR_FILENO];
 166     fdo->fd = stderr_fd;
 167     fdo->filename = err;
 168     fdo->flags = O_WRONLY;
 169     fdo->mode = -1;
 170     fdo->fileOffset = 0;
 171
 172
 173     // mark remaining fds as free
 174     for (int i = 3; i <= MAX_FD; ++i) {
 175         fdo = &fd_map[i];
 176         fdo->fd = -1;
 177     }
 178
 179     mmap_start = mmap_end = 0;
 180     nxm_start = nxm_end = 0;
 181     // other parameters will be initialized when the program is loaded
 182 }
 183
 184
 185 void
 186 Process::regStats()
 187 {
 188     using namespace Stats;
 189
 190     num_syscalls
 191         .name(name() + ".num_syscalls")
 192         .desc("Number of system calls")
 193         ;
 194 }
 195
 196 //
 197 // static helper functions
 198 //
 199 int
 200 Process::openInputFile(const string &filename)
 201 {
 202     int fd = open(filename.c_str(), O_RDONLY);
 203
 204     if (fd == -1) {
 205         perror(NULL);
 206         cerr << "unable to open \"" << filename << "\" for reading\n";
 207         fatal("can't open input file");
 208     }
 209
 210     return fd;
 211 }
 212
 213
 214 int
 215 Process::openOutputFile(const string &filename)
 216 {
 217     int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664);
 218
 219     if (fd == -1) {
 220         perror(NULL);
 221         cerr << "unable to open \"" << filename << "\" for writing\n";
 222         fatal("can't open output file");
 223     }
 224
 225     return fd;
 226 }
 227
 228 ThreadContext *
 229 Process::findFreeContext()
 230 {
 231     int size = contextIds.size();
 232     ThreadContext *tc;
 233     for (int i = 0; i < size; ++i) {
 234         tc = system->getThreadContext(contextIds[i]);
 235         if (tc->status() == ThreadContext::Halted) {
 236             // inactive context, free to use
 237             return tc;
 238         }
 239     }
 240     return NULL;
 241 }
 242
 243 void
 244 Process::initState()
 245 {
 246     if (contextIds.empty())
 247         fatal("Process %s is not associated with any HW contexts!\n", name());
 248
 249     // first thread context for this process... initialize & enable
 250     ThreadContext *tc = system->getThreadContext(contextIds[0]);
 251
 252     // mark this context as active so it will start ticking.
 253     tc->activate();
 254
 255     pTable->initState(tc);
 256 }
 257
 258 // map simulator fd sim_fd to target fd tgt_fd
 259 void
 260 Process::dup_fd(int sim_fd, int tgt_fd)
 261 {
 262     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 263         panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
 264
 265     Process::FdMap *fdo = &fd_map[tgt_fd];
 266     fdo->fd = sim_fd;
 267 }
 268
 269
 270 // generate new target fd for sim_fd
 271 int
 272 Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
 273 {
 274     // in case open() returns an error, don't allocate a new fd
 275     if (sim_fd == -1)
 276         return -1;
 277
 278     // find first free target fd
 279     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 280         Process::FdMap *fdo = &fd_map[free_fd];
 281         if (fdo->fd == -1 && fdo->driver == NULL) {
 282             fdo->fd = sim_fd;
 283             fdo->filename = filename;
 284             fdo->mode = mode;
 285             fdo->fileOffset = 0;
 286             fdo->flags = flags;
 287             fdo->isPipe = pipe;
 288             fdo->readPipeSource = 0;
 289             return free_fd;
 290         }
 291     }
 292
 293     panic("Process::alloc_fd: out of file descriptors!");
 294 }
 295
 296
 297 // free target fd (e.g., after close)
 298 void
 299 Process::free_fd(int tgt_fd)
 300 {
 301     Process::FdMap *fdo = &fd_map[tgt_fd];
 302     if (fdo->fd == -1)
 303         warn("Process::free_fd: request to free unused fd %d", tgt_fd);
 304
 305     fdo->fd = -1;
 306     fdo->filename = "NULL";
 307     fdo->mode = 0;
 308     fdo->fileOffset = 0;
 309     fdo->flags = 0;
 310     fdo->isPipe = false;
 311     fdo->readPipeSource = 0;
 312     fdo->driver = NULL;
 313 }
 314
 315
 316 // look up simulator fd for given target fd
 317 int
 318 Process::sim_fd(int tgt_fd)
 319 {
 320     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 321         return -1;
 322
 323     return fd_map[tgt_fd].fd;
 324 }
 325
 326 Process::FdMap *
 327 Process::sim_fd_obj(int tgt_fd)
 328 {
 329     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 330         return NULL;
 331
 332     return &fd_map[tgt_fd];
 333 }
 334
 335 void
 336 Process::allocateMem(Addr vaddr, int64_t size, bool clobber)
 337 {
 338     int npages = divCeil(size, (int64_t)PageBytes);
 339     Addr paddr = system->allocPhysPages(npages);
 340     pTable->map(vaddr, paddr, size, clobber);
 341 }
 342
 343 bool
 344 Process::fixupStackFault(Addr vaddr)
 345 {
 346     // Check if this is already on the stack and there's just no page there
 347     // yet.
 348     if (vaddr >= stack_min && vaddr < stack_base) {
 349         allocateMem(roundDown(vaddr, PageBytes), PageBytes);
 350         return true;
 351     }
 352
 353     // We've accessed the next page of the stack, so extend it to include
 354     // this address.
 355     if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
 356         while (vaddr < stack_min) {
 357             stack_min -= TheISA::PageBytes;
 358             if (stack_base - stack_min > max_stack_size)
 359                 fatal("Maximum stack size exceeded\n");
 360             allocateMem(stack_min, TheISA::PageBytes);
 361             inform("Increasing stack size by one page.");
 362         };
 363         return true;
 364     }
 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 bool
 555 Process::map(Addr vaddr, Addr paddr, int size)
 556 {
 557     pTable->map(vaddr, paddr, size);
 558     return true;
 559 }
 560
 561
 562 ////////////////////////////////////////////////////////////////////////
 563 //
 564 // LiveProcess member definitions
 565 //
 566 ////////////////////////////////////////////////////////////////////////
 567
 568
 569 LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
 570     : Process(params), objFile(_objFile),
 571       argv(params->cmd), envp(params->env), cwd(params->cwd),
 572       drivers(params->drivers)
 573 {
 574     __uid = params->uid;
 575     __euid = params->euid;
 576     __gid = params->gid;
 577     __egid = params->egid;
 578     __pid = params->pid;
 579     __ppid = params->ppid;
 580
 581     // load up symbols, if any... these may be used for debugging or
 582     // profiling.
 583     if (!debugSymbolTable) {
 584         debugSymbolTable = new SymbolTable();
 585         if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
 586             !objFile->loadLocalSymbols(debugSymbolTable) ||
 587             !objFile->loadWeakSymbols(debugSymbolTable)) {
 588             // didn't load any symbols
 589             delete debugSymbolTable;
 590             debugSymbolTable = NULL;
 591         }
 592     }
 593 }
 594
 595 void
 596 LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
 597 {
 598     num_syscalls++;
 599
 600     SyscallDesc *desc = getDesc(callnum);
 601     if (desc == NULL)
 602         fatal("Syscall %d out of range", callnum);
 603
 604     desc->doSyscall(callnum, this, tc);
 605 }
 606
 607 IntReg
 608 LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
 609 {
 610     return getSyscallArg(tc, i);
 611 }
 612
 613
 614 EmulatedDriver *
 615 LiveProcess::findDriver(std::string filename)
 616 {
 617     for (EmulatedDriver *d : drivers) {
 618         if (d->match(filename))
 619             return d;
 620     }
 621
 622     return NULL;
 623 }
 624
 625
 626 LiveProcess *
 627 LiveProcess::create(LiveProcessParams * params)
 628 {
 629     LiveProcess *process = NULL;
 630
 631     string executable =
 632         params->executable == "" ? params->cmd[0] : params->executable;
 633     ObjectFile *objFile = createObjectFile(executable);
 634     if (objFile == NULL) {
 635         fatal("Can't load object file %s", executable);
 636     }
 637
 638     if (objFile->isDynamic())
 639        fatal("Object file is a dynamic executable however only static "
 640              "executables are supported!\n       Please recompile your "
 641              "executable as a static binary and try again.\n");
 642
 643 #if THE_ISA == ALPHA_ISA
 644     if (objFile->getArch() != ObjectFile::Alpha)
 645         fatal("Object file architecture does not match compiled ISA (Alpha).");
 646
 647     switch (objFile->getOpSys()) {
 648       case ObjectFile::Tru64:
 649         process = new AlphaTru64Process(params, objFile);
 650         break;
 651
 652       case ObjectFile::UnknownOpSys:
 653         warn("Unknown operating system; assuming Linux.");
 654         // fall through
 655       case ObjectFile::Linux:
 656         process = new AlphaLinuxProcess(params, objFile);
 657         break;
 658
 659       default:
 660         fatal("Unknown/unsupported operating system.");
 661     }
 662 #elif THE_ISA == SPARC_ISA
 663     if (objFile->getArch() != ObjectFile::SPARC64 &&
 664         objFile->getArch() != ObjectFile::SPARC32)
 665         fatal("Object file architecture does not match compiled ISA (SPARC).");
 666     switch (objFile->getOpSys()) {
 667       case ObjectFile::UnknownOpSys:
 668         warn("Unknown operating system; assuming Linux.");
 669         // fall through
 670       case ObjectFile::Linux:
 671         if (objFile->getArch() == ObjectFile::SPARC64) {
 672             process = new Sparc64LinuxProcess(params, objFile);
 673         } else {
 674             process = new Sparc32LinuxProcess(params, objFile);
 675         }
 676         break;
 677
 678
 679       case ObjectFile::Solaris:
 680         process = new SparcSolarisProcess(params, objFile);
 681         break;
 682
 683       default:
 684         fatal("Unknown/unsupported operating system.");
 685     }
 686 #elif THE_ISA == X86_ISA
 687     if (objFile->getArch() != ObjectFile::X86_64 &&
 688         objFile->getArch() != ObjectFile::I386)
 689         fatal("Object file architecture does not match compiled ISA (x86).");
 690     switch (objFile->getOpSys()) {
 691       case ObjectFile::UnknownOpSys:
 692         warn("Unknown operating system; assuming Linux.");
 693         // fall through
 694       case ObjectFile::Linux:
 695         if (objFile->getArch() == ObjectFile::X86_64) {
 696             process = new X86_64LinuxProcess(params, objFile);
 697         } else {
 698             process = new I386LinuxProcess(params, objFile);
 699         }
 700         break;
 701
 702       default:
 703         fatal("Unknown/unsupported operating system.");
 704     }
 705 #elif THE_ISA == MIPS_ISA
 706     if (objFile->getArch() != ObjectFile::Mips)
 707         fatal("Object file architecture does not match compiled ISA (MIPS).");
 708     switch (objFile->getOpSys()) {
 709       case ObjectFile::UnknownOpSys:
 710         warn("Unknown operating system; assuming Linux.");
 711         // fall through
 712       case ObjectFile::Linux:
 713         process = new MipsLinuxProcess(params, objFile);
 714         break;
 715
 716       default:
 717         fatal("Unknown/unsupported operating system.");
 718     }
 719 #elif THE_ISA == ARM_ISA
 720     ObjectFile::Arch arch = objFile->getArch();
 721     if (arch != ObjectFile::Arm && arch != ObjectFile::Thumb &&
 722         arch != ObjectFile::Arm64)
 723         fatal("Object file architecture does not match compiled ISA (ARM).");
 724     switch (objFile->getOpSys()) {
 725       case ObjectFile::UnknownOpSys:
 726         warn("Unknown operating system; assuming Linux.");
 727         // fall through
 728       case ObjectFile::Linux:
 729         if (arch == ObjectFile::Arm64) {
 730             process = new ArmLinuxProcess64(params, objFile,
 731                                             objFile->getArch());
 732         } else {
 733             process = new ArmLinuxProcess32(params, objFile,
 734                                             objFile->getArch());
 735         }
 736         break;
 737       case ObjectFile::LinuxArmOABI:
 738         fatal("M5 does not support ARM OABI binaries. Please recompile with an"
 739               " EABI compiler.");
 740       default:
 741         fatal("Unknown/unsupported operating system.");
 742     }
 743 #elif THE_ISA == POWER_ISA
 744     if (objFile->getArch() != ObjectFile::Power)
 745         fatal("Object file architecture does not match compiled ISA (Power).");
 746     switch (objFile->getOpSys()) {
 747       case ObjectFile::UnknownOpSys:
 748         warn("Unknown operating system; assuming Linux.");
 749         // fall through
 750       case ObjectFile::Linux:
 751         process = new PowerLinuxProcess(params, objFile);
 752         break;
 753
 754       default:
 755         fatal("Unknown/unsupported operating system.");
 756     }
 757 #else
 758 #error "THE_ISA not set"
 759 #endif
 760
 761     if (process == NULL)
 762         fatal("Unknown error creating process object.");
 763     return process;
 764 }
 765
 766 LiveProcess *
 767 LiveProcessParams::create()
 768 {
 769     return LiveProcess::create(this);
 770 }