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 <unistd.h>
  34 #include <fcntl.h>
  35 #include <string>
  36
  37 #include "arch/remote_gdb.hh"
  38 #include "base/intmath.hh"
  39 #include "base/loader/object_file.hh"
  40 #include "base/loader/symtab.hh"
  41 #include "base/statistics.hh"
  42 #include "config/full_system.hh"
  43 #include "config/the_isa.hh"
  44 #include "cpu/thread_context.hh"
  45 #include "mem/page_table.hh"
  46 #include "mem/physical.hh"
  47 #include "mem/translating_port.hh"
  48 #include "params/Process.hh"
  49 #include "params/LiveProcess.hh"
  50 #include "sim/debug.hh"
  51 #include "sim/process.hh"
  52 #include "sim/process_impl.hh"
  53 #include "sim/stats.hh"
  54 #include "sim/syscall_emul.hh"
  55 #include "sim/system.hh"
  56
  57 #if THE_ISA == ALPHA_ISA
  58 #include "arch/alpha/linux/process.hh"
  59 #include "arch/alpha/tru64/process.hh"
  60 #elif THE_ISA == SPARC_ISA
  61 #include "arch/sparc/linux/process.hh"
  62 #include "arch/sparc/solaris/process.hh"
  63 #elif THE_ISA == MIPS_ISA
  64 #include "arch/mips/linux/process.hh"
  65 #elif THE_ISA == ARM_ISA
  66 #include "arch/arm/linux/process.hh"
  67 #elif THE_ISA == X86_ISA
  68 #include "arch/x86/linux/process.hh"
  69 #elif THE_ISA == POWER_ISA
  70 #include "arch/power/linux/process.hh"
  71 #else
  72 #error "THE_ISA not set"
  73 #endif
  74
  75
  76 using namespace std;
  77 using namespace TheISA;
  78
  79 //
  80 // The purpose of this code is to fake the loader & syscall mechanism
  81 // when there's no OS: thus there's no resone to use it in FULL_SYSTEM
  82 // mode when we do have an OS
  83 //
  84 #if FULL_SYSTEM
  85 #error "process.cc not compatible with FULL_SYSTEM"
  86 #endif
  87
  88 // current number of allocated processes
  89 int num_processes = 0;
  90
  91 template<class IntType>
  92 AuxVector<IntType>::AuxVector(IntType type, IntType val)
  93 {
  94     a_type = TheISA::htog(type);
  95     a_val = TheISA::htog(val);
  96 }
  97
  98 template class AuxVector<uint32_t>;
  99 template class AuxVector<uint64_t>;
 100
 101 Process::Process(ProcessParams * params)
 102     : SimObject(params), system(params->system), checkpointRestored(false),
 103     max_stack_size(params->max_stack_size)
 104 {
 105     string in = params->input;
 106     string out = params->output;
 107     string err = params->errout;
 108
 109     // initialize file descriptors to default: same as simulator
 110     int stdin_fd, stdout_fd, stderr_fd;
 111
 112     if (in == "stdin" || in == "cin")
 113         stdin_fd = STDIN_FILENO;
 114     else if (in == "None")
 115         stdin_fd = -1;
 116     else
 117         stdin_fd = Process::openInputFile(in);
 118
 119     if (out == "stdout" || out == "cout")
 120         stdout_fd = STDOUT_FILENO;
 121     else if (out == "stderr" || out == "cerr")
 122         stdout_fd = STDERR_FILENO;
 123     else if (out == "None")
 124         stdout_fd = -1;
 125     else
 126         stdout_fd = Process::openOutputFile(out);
 127
 128     if (err == "stdout" || err == "cout")
 129         stderr_fd = STDOUT_FILENO;
 130     else if (err == "stderr" || err == "cerr")
 131         stderr_fd = STDERR_FILENO;
 132     else if (err == "None")
 133         stderr_fd = -1;
 134     else if (err == out)
 135         stderr_fd = stdout_fd;
 136     else
 137         stderr_fd = Process::openOutputFile(err);
 138
 139     M5_pid = system->allocatePID();
 140     // initialize first 3 fds (stdin, stdout, stderr)
 141     Process::FdMap *fdo = &fd_map[STDIN_FILENO];
 142     fdo->fd = stdin_fd;
 143     fdo->filename = in;
 144     fdo->flags = O_RDONLY;
 145     fdo->mode = -1;
 146     fdo->fileOffset = 0;
 147
 148     fdo =  &fd_map[STDOUT_FILENO];
 149     fdo->fd = stdout_fd;
 150     fdo->filename = out;
 151     fdo->flags =  O_WRONLY | O_CREAT | O_TRUNC;
 152     fdo->mode = 0774;
 153     fdo->fileOffset = 0;
 154
 155     fdo = &fd_map[STDERR_FILENO];
 156     fdo->fd = stderr_fd;
 157     fdo->filename = err;
 158     fdo->flags = O_WRONLY;
 159     fdo->mode = -1;
 160     fdo->fileOffset = 0;
 161
 162
 163     // mark remaining fds as free
 164     for (int i = 3; i <= MAX_FD; ++i) {
 165         Process::FdMap *fdo = &fd_map[i];
 166         fdo->fd = -1;
 167     }
 168
 169     mmap_start = mmap_end = 0;
 170     nxm_start = nxm_end = 0;
 171     pTable = new PageTable(this);
 172     // other parameters will be initialized when the program is loaded
 173 }
 174
 175
 176 void
 177 Process::regStats()
 178 {
 179     using namespace Stats;
 180
 181     num_syscalls
 182         .name(name() + ".PROG:num_syscalls")
 183         .desc("Number of system calls")
 184         ;
 185 }
 186
 187 //
 188 // static helper functions
 189 //
 190 int
 191 Process::openInputFile(const string &filename)
 192 {
 193     int fd = open(filename.c_str(), O_RDONLY);
 194
 195     if (fd == -1) {
 196         perror(NULL);
 197         cerr << "unable to open \"" << filename << "\" for reading\n";
 198         fatal("can't open input file");
 199     }
 200
 201     return fd;
 202 }
 203
 204
 205 int
 206 Process::openOutputFile(const string &filename)
 207 {
 208     int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664);
 209
 210     if (fd == -1) {
 211         perror(NULL);
 212         cerr << "unable to open \"" << filename << "\" for writing\n";
 213         fatal("can't open output file");
 214     }
 215
 216     return fd;
 217 }
 218
 219 ThreadContext *
 220 Process::findFreeContext()
 221 {
 222     int size = contextIds.size();
 223     ThreadContext *tc;
 224     for (int i = 0; i < size; ++i) {
 225         tc = system->getThreadContext(contextIds[i]);
 226         if (tc->status() == ThreadContext::Halted) {
 227             // inactive context, free to use
 228             return tc;
 229         }
 230     }
 231     return NULL;
 232 }
 233
 234 void
 235 Process::startup()
 236 {
 237     if (contextIds.empty())
 238         fatal("Process %s is not associated with any HW contexts!\n", name());
 239
 240     // first thread context for this process... initialize & enable
 241     ThreadContext *tc = system->getThreadContext(contextIds[0]);
 242
 243     // mark this context as active so it will start ticking.
 244     tc->activate(0);
 245
 246     Port *mem_port;
 247     mem_port = system->physmem->getPort("functional");
 248     initVirtMem = new TranslatingPort("process init port", this,
 249             TranslatingPort::Always);
 250     mem_port->setPeer(initVirtMem);
 251     initVirtMem->setPeer(mem_port);
 252 }
 253
 254 // map simulator fd sim_fd to target fd tgt_fd
 255 void
 256 Process::dup_fd(int sim_fd, int tgt_fd)
 257 {
 258     if (tgt_fd < 0 || tgt_fd > MAX_FD)
 259         panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
 260
 261     Process::FdMap *fdo = &fd_map[tgt_fd];
 262     fdo->fd = sim_fd;
 263 }
 264
 265
 266 // generate new target fd for sim_fd
 267 int
 268 Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
 269 {
 270     // in case open() returns an error, don't allocate a new fd
 271     if (sim_fd == -1)
 272         return -1;
 273
 274     // find first free target fd
 275     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 276         Process::FdMap *fdo = &fd_map[free_fd];
 277         if (fdo->fd == -1) {
 278             fdo->fd = sim_fd;
 279             fdo->filename = filename;
 280             fdo->mode = mode;
 281             fdo->fileOffset = 0;
 282             fdo->flags = flags;
 283             fdo->isPipe = pipe;
 284             fdo->readPipeSource = 0;
 285             return free_fd;
 286         }
 287     }
 288
 289     panic("Process::alloc_fd: out of file descriptors!");
 290 }
 291
 292
 293 // free target fd (e.g., after close)
 294 void
 295 Process::free_fd(int tgt_fd)
 296 {
 297     Process::FdMap *fdo = &fd_map[tgt_fd];
 298     if (fdo->fd == -1)
 299         warn("Process::free_fd: request to free unused fd %d", tgt_fd);
 300
 301     fdo->fd = -1;
 302     fdo->filename = "NULL";
 303     fdo->mode = 0;
 304     fdo->fileOffset = 0;
 305     fdo->flags = 0;
 306     fdo->isPipe = false;
 307     fdo->readPipeSource = 0;
 308 }
 309
 310
 311 // look up simulator fd for given target fd
 312 int
 313 Process::sim_fd(int tgt_fd)
 314 {
 315     if (tgt_fd > MAX_FD)
 316         return -1;
 317
 318     return fd_map[tgt_fd].fd;
 319 }
 320
 321 Process::FdMap *
 322 Process::sim_fd_obj(int tgt_fd)
 323 {
 324     if (tgt_fd > MAX_FD)
 325         panic("sim_fd_obj called in fd out of range.");
 326
 327     return &fd_map[tgt_fd];
 328 }
 329 bool
 330 Process::checkAndAllocNextPage(Addr vaddr)
 331 {
 332     // if this is an initial write we might not have
 333     if (vaddr >= stack_min && vaddr < stack_base) {
 334         pTable->allocate(roundDown(vaddr, VMPageSize), VMPageSize);
 335         return true;
 336     }
 337
 338     // We've accessed the next page of the stack, so extend the stack
 339     // to cover it.
 340     if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
 341         while (vaddr < stack_min) {
 342             stack_min -= TheISA::PageBytes;
 343             if(stack_base - stack_min > max_stack_size)
 344                 fatal("Maximum stack size exceeded\n");
 345             if(stack_base - stack_min > 8*1024*1024)
 346                 fatal("Over max stack size for one thread\n");
 347             pTable->allocate(stack_min, TheISA::PageBytes);
 348             inform("Increasing stack size by one page.");
 349         };
 350         return true;
 351     }
 352     return false;
 353 }
 354
 355  // find all offsets for currently open files and save them
 356 void
 357 Process::fix_file_offsets() {
 358     Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
 359     Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
 360     Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
 361     string in = fdo_stdin->filename;
 362     string out = fdo_stdout->filename;
 363     string err = fdo_stderr->filename;
 364
 365     // initialize file descriptors to default: same as simulator
 366     int stdin_fd, stdout_fd, stderr_fd;
 367
 368     if (in == "stdin" || in == "cin")
 369         stdin_fd = STDIN_FILENO;
 370     else if (in == "None")
 371         stdin_fd = -1;
 372     else{
 373         //OPEN standard in and seek to the right location
 374         stdin_fd = Process::openInputFile(in);
 375         if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
 376             panic("Unable to seek to correct location in file: %s", in);
 377     }
 378
 379     if (out == "stdout" || out == "cout")
 380         stdout_fd = STDOUT_FILENO;
 381     else if (out == "stderr" || out == "cerr")
 382         stdout_fd = STDERR_FILENO;
 383     else if (out == "None")
 384         stdout_fd = -1;
 385     else{
 386         stdout_fd = Process::openOutputFile(out);
 387         if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
 388             panic("Unable to seek to correct location in file: %s", out);
 389     }
 390
 391     if (err == "stdout" || err == "cout")
 392         stderr_fd = STDOUT_FILENO;
 393     else if (err == "stderr" || err == "cerr")
 394         stderr_fd = STDERR_FILENO;
 395     else if (err == "None")
 396         stderr_fd = -1;
 397     else if (err == out)
 398         stderr_fd = stdout_fd;
 399     else {
 400         stderr_fd = Process::openOutputFile(err);
 401         if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
 402             panic("Unable to seek to correct location in file: %s", err);
 403     }
 404
 405     fdo_stdin->fd = stdin_fd;
 406     fdo_stdout->fd = stdout_fd;
 407     fdo_stderr->fd = stderr_fd;
 408
 409
 410     for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
 411         Process::FdMap *fdo = &fd_map[free_fd];
 412         if (fdo->fd != -1) {
 413             if (fdo->isPipe){
 414                 if (fdo->filename == "PIPE-WRITE")
 415                     continue;
 416                 else {
 417                     assert (fdo->filename == "PIPE-READ");
 418                     //create a new pipe
 419                     int fds[2];
 420                     int pipe_retval = pipe(fds);
 421
 422                     if (pipe_retval < 0) {
 423                         // error
 424                         panic("Unable to create new pipe.");
 425                     }
 426                     fdo->fd = fds[0]; //set read pipe
 427                     Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
 428                     if (fdo_write->filename != "PIPE-WRITE")
 429                         panic ("Couldn't find write end of the pipe");
 430
 431                     fdo_write->fd = fds[1];//set write pipe
 432                }
 433             } else {
 434                 //Open file
 435                 int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
 436
 437                 if (fd == -1)
 438                     panic("Unable to open file: %s", fdo->filename);
 439                 fdo->fd = fd;
 440
 441                 //Seek to correct location before checkpoint
 442                 if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
 443                     panic("Unable to seek to correct location in file: %s", fdo->filename);
 444             }
 445         }
 446     }
 447 }
 448 void
 449 Process::find_file_offsets(){
 450     for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
 451         Process::FdMap *fdo = &fd_map[free_fd];
 452         if (fdo->fd != -1) {
 453             fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
 454         }  else {
 455                 fdo->filename = "NULL";
 456                 fdo->fileOffset = 0;
 457         }
 458     }
 459 }
 460
 461 void
 462 Process::setReadPipeSource(int read_pipe_fd, int source_fd){
 463     Process::FdMap *fdo = &fd_map[read_pipe_fd];
 464     fdo->readPipeSource = source_fd;
 465 }
 466
 467 void
 468 Process::FdMap::serialize(std::ostream &os)
 469 {
 470     SERIALIZE_SCALAR(fd);
 471     SERIALIZE_SCALAR(isPipe);
 472     SERIALIZE_SCALAR(filename);
 473     SERIALIZE_SCALAR(flags);
 474     SERIALIZE_SCALAR(readPipeSource);
 475     SERIALIZE_SCALAR(fileOffset);
 476 }
 477
 478 void
 479 Process::FdMap::unserialize(Checkpoint *cp, const std::string &section)
 480 {
 481     UNSERIALIZE_SCALAR(fd);
 482     UNSERIALIZE_SCALAR(isPipe);
 483     UNSERIALIZE_SCALAR(filename);
 484     UNSERIALIZE_SCALAR(flags);
 485     UNSERIALIZE_SCALAR(readPipeSource);
 486     UNSERIALIZE_SCALAR(fileOffset);
 487 }
 488
 489 void
 490 Process::serialize(std::ostream &os)
 491 {
 492     SERIALIZE_SCALAR(initialContextLoaded);
 493     SERIALIZE_SCALAR(brk_point);
 494     SERIALIZE_SCALAR(stack_base);
 495     SERIALIZE_SCALAR(stack_size);
 496     SERIALIZE_SCALAR(stack_min);
 497     SERIALIZE_SCALAR(next_thread_stack_base);
 498     SERIALIZE_SCALAR(mmap_start);
 499     SERIALIZE_SCALAR(mmap_end);
 500     SERIALIZE_SCALAR(nxm_start);
 501     SERIALIZE_SCALAR(nxm_end);
 502     find_file_offsets();
 503     pTable->serialize(os);
 504     for (int x = 0; x <= MAX_FD; x++) {
 505         nameOut(os, csprintf("%s.FdMap%d", name(), x));
 506         fd_map[x].serialize(os);
 507     }
 508
 509 }
 510
 511 void
 512 Process::unserialize(Checkpoint *cp, const std::string &section)
 513 {
 514     UNSERIALIZE_SCALAR(initialContextLoaded);
 515     UNSERIALIZE_SCALAR(brk_point);
 516     UNSERIALIZE_SCALAR(stack_base);
 517     UNSERIALIZE_SCALAR(stack_size);
 518     UNSERIALIZE_SCALAR(stack_min);
 519     UNSERIALIZE_SCALAR(next_thread_stack_base);
 520     UNSERIALIZE_SCALAR(mmap_start);
 521     UNSERIALIZE_SCALAR(mmap_end);
 522     UNSERIALIZE_SCALAR(nxm_start);
 523     UNSERIALIZE_SCALAR(nxm_end);
 524     pTable->unserialize(cp, section);
 525     for (int x = 0; x <= MAX_FD; x++) {
 526         fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
 527      }
 528     fix_file_offsets();
 529
 530     checkpointRestored = true;
 531
 532 }
 533
 534
 535 ////////////////////////////////////////////////////////////////////////
 536 //
 537 // LiveProcess member definitions
 538 //
 539 ////////////////////////////////////////////////////////////////////////
 540
 541
 542 LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
 543     : Process(params), objFile(_objFile),
 544       argv(params->cmd), envp(params->env), cwd(params->cwd)
 545 {
 546     __uid = params->uid;
 547     __euid = params->euid;
 548     __gid = params->gid;
 549     __egid = params->egid;
 550     __pid = params->pid;
 551     __ppid = params->ppid;
 552
 553     prog_fname = params->cmd[0];
 554
 555     // load up symbols, if any... these may be used for debugging or
 556     // profiling.
 557     if (!debugSymbolTable) {
 558         debugSymbolTable = new SymbolTable();
 559         if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
 560             !objFile->loadLocalSymbols(debugSymbolTable)) {
 561             // didn't load any symbols
 562             delete debugSymbolTable;
 563             debugSymbolTable = NULL;
 564         }
 565     }
 566 }
 567
 568 void
 569 LiveProcess::argsInit(int intSize, int pageSize)
 570 {
 571     Process::startup();
 572
 573     // load object file into target memory
 574     objFile->loadSections(initVirtMem);
 575
 576     // Calculate how much space we need for arg & env arrays.
 577     int argv_array_size = intSize * (argv.size() + 1);
 578     int envp_array_size = intSize * (envp.size() + 1);
 579     int arg_data_size = 0;
 580     for (vector<string>::size_type i = 0; i < argv.size(); ++i) {
 581         arg_data_size += argv[i].size() + 1;
 582     }
 583     int env_data_size = 0;
 584     for (vector<string>::size_type i = 0; i < envp.size(); ++i) {
 585         env_data_size += envp[i].size() + 1;
 586     }
 587
 588     int space_needed =
 589         argv_array_size + envp_array_size + arg_data_size + env_data_size;
 590     if (space_needed < 32*1024)
 591         space_needed = 32*1024;
 592
 593     // set bottom of stack
 594     stack_min = stack_base - space_needed;
 595     // align it
 596     stack_min = roundDown(stack_min, pageSize);
 597     stack_size = stack_base - stack_min;
 598     // map memory
 599     pTable->allocate(stack_min, roundUp(stack_size, pageSize));
 600
 601     // map out initial stack contents
 602     Addr argv_array_base = stack_min + intSize; // room for argc
 603     Addr envp_array_base = argv_array_base + argv_array_size;
 604     Addr arg_data_base = envp_array_base + envp_array_size;
 605     Addr env_data_base = arg_data_base + arg_data_size;
 606
 607     // write contents to stack
 608     uint64_t argc = argv.size();
 609     if (intSize == 8)
 610         argc = htog((uint64_t)argc);
 611     else if (intSize == 4)
 612         argc = htog((uint32_t)argc);
 613     else
 614         panic("Unknown int size");
 615
 616     initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
 617
 618     copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
 619     copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
 620
 621     ThreadContext *tc = system->getThreadContext(contextIds[0]);
 622
 623     setSyscallArg(tc, 0, argc);
 624     setSyscallArg(tc, 1, argv_array_base);
 625     tc->setIntReg(StackPointerReg, stack_min);
 626
 627     Addr prog_entry = objFile->entryPoint();
 628     tc->setPC(prog_entry);
 629     tc->setNextPC(prog_entry + sizeof(MachInst));
 630
 631 #if THE_ISA != ALPHA_ISA && THE_ISA != POWER_ISA //e.g. MIPS or Sparc
 632     tc->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
 633 #endif
 634
 635     num_processes++;
 636 }
 637
 638 void
 639 LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
 640 {
 641     num_syscalls++;
 642
 643     SyscallDesc *desc = getDesc(callnum);
 644     if (desc == NULL)
 645         fatal("Syscall %d out of range", callnum);
 646
 647     desc->doSyscall(callnum, this, tc);
 648 }
 649
 650 LiveProcess *
 651 LiveProcess::create(LiveProcessParams * params)
 652 {
 653     LiveProcess *process = NULL;
 654
 655     string executable =
 656         params->executable == "" ? params->cmd[0] : params->executable;
 657     ObjectFile *objFile = createObjectFile(executable);
 658     if (objFile == NULL) {
 659         fatal("Can't load object file %s", executable);
 660     }
 661
 662     if (objFile->isDynamic())
 663        fatal("Object file is a dynamic executable however only static "
 664              "executables are supported!\n       Please recompile your "
 665              "executable as a static binary and try again.\n");
 666
 667 #if THE_ISA == ALPHA_ISA
 668     if (objFile->getArch() != ObjectFile::Alpha)
 669         fatal("Object file architecture does not match compiled ISA (Alpha).");
 670
 671     switch (objFile->getOpSys()) {
 672       case ObjectFile::Tru64:
 673         process = new AlphaTru64Process(params, objFile);
 674         break;
 675
 676       case ObjectFile::UnknownOpSys:
 677         warn("Unknown operating system; assuming Linux.");
 678         // fall through
 679       case ObjectFile::Linux:
 680         process = new AlphaLinuxProcess(params, objFile);
 681         break;
 682
 683       default:
 684         fatal("Unknown/unsupported operating system.");
 685     }
 686 #elif THE_ISA == SPARC_ISA
 687     if (objFile->getArch() != ObjectFile::SPARC64 &&
 688         objFile->getArch() != ObjectFile::SPARC32)
 689         fatal("Object file architecture does not match compiled ISA (SPARC).");
 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::SPARC64) {
 696             process = new Sparc64LinuxProcess(params, objFile);
 697         } else {
 698             process = new Sparc32LinuxProcess(params, objFile);
 699         }
 700         break;
 701
 702
 703       case ObjectFile::Solaris:
 704         process = new SparcSolarisProcess(params, objFile);
 705         break;
 706
 707       default:
 708         fatal("Unknown/unsupported operating system.");
 709     }
 710 #elif THE_ISA == X86_ISA
 711     if (objFile->getArch() != ObjectFile::X86_64 &&
 712         objFile->getArch() != ObjectFile::I386)
 713         fatal("Object file architecture does not match compiled ISA (x86).");
 714     switch (objFile->getOpSys()) {
 715       case ObjectFile::UnknownOpSys:
 716         warn("Unknown operating system; assuming Linux.");
 717         // fall through
 718       case ObjectFile::Linux:
 719         if (objFile->getArch() == ObjectFile::X86_64) {
 720             process = new X86_64LinuxProcess(params, objFile);
 721         } else {
 722             process = new I386LinuxProcess(params, objFile);
 723         }
 724         break;
 725
 726       default:
 727         fatal("Unknown/unsupported operating system.");
 728     }
 729 #elif THE_ISA == MIPS_ISA
 730     if (objFile->getArch() != ObjectFile::Mips)
 731         fatal("Object file architecture does not match compiled ISA (MIPS).");
 732     switch (objFile->getOpSys()) {
 733       case ObjectFile::UnknownOpSys:
 734         warn("Unknown operating system; assuming Linux.");
 735         // fall through
 736       case ObjectFile::Linux:
 737         process = new MipsLinuxProcess(params, objFile);
 738         break;
 739
 740       default:
 741         fatal("Unknown/unsupported operating system.");
 742     }
 743 #elif THE_ISA == ARM_ISA
 744     if (objFile->getArch() != ObjectFile::Arm)
 745         fatal("Object file architecture does not match compiled ISA (ARM).");
 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 ArmLinuxProcess(params, objFile);
 752         break;
 753       case ObjectFile::LinuxArmOABI:
 754         fatal("M5 does not support ARM OABI binaries. Please recompile with an"
 755               " EABI compiler.");
 756       default:
 757         fatal("Unknown/unsupported operating system.");
 758     }
 759 #elif THE_ISA == POWER_ISA
 760     if (objFile->getArch() != ObjectFile::Power)
 761         fatal("Object file architecture does not match compiled ISA (Power).");
 762     switch (objFile->getOpSys()) {
 763       case ObjectFile::UnknownOpSys:
 764         warn("Unknown operating system; assuming Linux.");
 765         // fall through
 766       case ObjectFile::Linux:
 767         process = new PowerLinuxProcess(params, objFile);
 768         break;
 769
 770       default:
 771         fatal("Unknown/unsupported operating system.");
 772     }
 773 #else
 774 #error "THE_ISA not set"
 775 #endif
 776
 777
 778     if (process == NULL)
 779         fatal("Unknown error creating process object.");
 780     return process;
 781 }
 782
 783 LiveProcess *
 784 LiveProcessParams::create()
 785 {
 786     return LiveProcess::create(this);
 787 }