process.cc revision 7096:e81026b9dfe0 
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
36#include <cstdio>
37#include <string>
38
39#include "arch/remote_gdb.hh"
40#include "base/intmath.hh"
41#include "base/loader/object_file.hh"
42#include "base/loader/symtab.hh"
43#include "base/statistics.hh"
44#include "config/full_system.hh"
45#include "config/the_isa.hh"
46#include "cpu/thread_context.hh"
47#include "mem/page_table.hh"
48#include "mem/physical.hh"
49#include "mem/translating_port.hh"
50#include "params/Process.hh"
51#include "params/LiveProcess.hh"
52#include "sim/debug.hh"
53#include "sim/process.hh"
54#include "sim/process_impl.hh"
55#include "sim/stats.hh"
56#include "sim/syscall_emul.hh"
57#include "sim/system.hh"
58
59#if THE_ISA == ALPHA_ISA
60#include "arch/alpha/linux/process.hh"
61#include "arch/alpha/tru64/process.hh"
62#elif THE_ISA == SPARC_ISA
63#include "arch/sparc/linux/process.hh"
64#include "arch/sparc/solaris/process.hh"
65#elif THE_ISA == MIPS_ISA
66#include "arch/mips/linux/process.hh"
67#elif THE_ISA == ARM_ISA
68#include "arch/arm/linux/process.hh"
69#elif THE_ISA == X86_ISA
70#include "arch/x86/linux/process.hh"
71#elif THE_ISA == POWER_ISA
72#include "arch/power/linux/process.hh"
73#else
74#error "THE_ISA not set"
75#endif
76
77
78using namespace std;
79using namespace TheISA;
80
81//
82// The purpose of this code is to fake the loader & syscall mechanism
83// when there's no OS: thus there's no resone to use it in FULL_SYSTEM
84// mode when we do have an OS
85//
86#if FULL_SYSTEM
87#error "process.cc not compatible with FULL_SYSTEM"
88#endif
89
90// current number of allocated processes
91int num_processes = 0;
92
93template<class IntType>
94AuxVector<IntType>::AuxVector(IntType type, IntType val)
95{
96    a_type = TheISA::htog(type);
97    a_val = TheISA::htog(val);
98}
99
100template class AuxVector<uint32_t>;
101template class AuxVector<uint64_t>;
102
103Process::Process(ProcessParams * params)
104    : SimObject(params), system(params->system), checkpointRestored(false),
105    max_stack_size(params->max_stack_size)
106{
107    string in = params->input;
108    string out = params->output;
109    string err = params->errout;
110
111    // initialize file descriptors to default: same as simulator
112    int stdin_fd, stdout_fd, stderr_fd;
113
114    if (in == "stdin" || in == "cin")
115        stdin_fd = STDIN_FILENO;
116    else if (in == "None")
117        stdin_fd = -1;
118    else
119        stdin_fd = Process::openInputFile(in);
120
121    if (out == "stdout" || out == "cout")
122        stdout_fd = STDOUT_FILENO;
123    else if (out == "stderr" || out == "cerr")
124        stdout_fd = STDERR_FILENO;
125    else if (out == "None")
126        stdout_fd = -1;
127    else
128        stdout_fd = Process::openOutputFile(out);
129
130    if (err == "stdout" || err == "cout")
131        stderr_fd = STDOUT_FILENO;
132    else if (err == "stderr" || err == "cerr")
133        stderr_fd = STDERR_FILENO;
134    else if (err == "None")
135        stderr_fd = -1;
136    else if (err == out)
137        stderr_fd = stdout_fd;
138    else
139        stderr_fd = Process::openOutputFile(err);
140
141    M5_pid = system->allocatePID();
142    // initialize first 3 fds (stdin, stdout, stderr)
143    Process::FdMap *fdo = &fd_map[STDIN_FILENO];
144    fdo->fd = stdin_fd;
145    fdo->filename = in;
146    fdo->flags = O_RDONLY;
147    fdo->mode = -1;
148    fdo->fileOffset = 0;
149
150    fdo =  &fd_map[STDOUT_FILENO];
151    fdo->fd = stdout_fd;
152    fdo->filename = out;
153    fdo->flags =  O_WRONLY | O_CREAT | O_TRUNC;
154    fdo->mode = 0774;
155    fdo->fileOffset = 0;
156
157    fdo = &fd_map[STDERR_FILENO];
158    fdo->fd = stderr_fd;
159    fdo->filename = err;
160    fdo->flags = O_WRONLY;
161    fdo->mode = -1;
162    fdo->fileOffset = 0;
163
164
165    // mark remaining fds as free
166    for (int i = 3; i <= MAX_FD; ++i) {
167        Process::FdMap *fdo = &fd_map[i];
168        fdo->fd = -1;
169    }
170
171    mmap_start = mmap_end = 0;
172    nxm_start = nxm_end = 0;
173    pTable = new PageTable(this);
174    // other parameters will be initialized when the program is loaded
175}
176
177
178void
179Process::regStats()
180{
181    using namespace Stats;
182
183    num_syscalls
184        .name(name() + ".PROG:num_syscalls")
185        .desc("Number of system calls")
186        ;
187}
188
189//
190// static helper functions
191//
192int
193Process::openInputFile(const string &filename)
194{
195    int fd = open(filename.c_str(), O_RDONLY);
196
197    if (fd == -1) {
198        perror(NULL);
199        cerr << "unable to open \"" << filename << "\" for reading\n";
200        fatal("can't open input file");
201    }
202
203    return fd;
204}
205
206
207int
208Process::openOutputFile(const string &filename)
209{
210    int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664);
211
212    if (fd == -1) {
213        perror(NULL);
214        cerr << "unable to open \"" << filename << "\" for writing\n";
215        fatal("can't open output file");
216    }
217
218    return fd;
219}
220
221ThreadContext *
222Process::findFreeContext()
223{
224    int size = contextIds.size();
225    ThreadContext *tc;
226    for (int i = 0; i < size; ++i) {
227        tc = system->getThreadContext(contextIds[i]);
228        if (tc->status() == ThreadContext::Halted) {
229            // inactive context, free to use
230            return tc;
231        }
232    }
233    return NULL;
234}
235
236void
237Process::startup()
238{
239    if (contextIds.empty())
240        fatal("Process %s is not associated with any HW contexts!\n", name());
241
242    // first thread context for this process... initialize & enable
243    ThreadContext *tc = system->getThreadContext(contextIds[0]);
244
245    // mark this context as active so it will start ticking.
246    tc->activate(0);
247
248    Port *mem_port;
249    mem_port = system->physmem->getPort("functional");
250    initVirtMem = new TranslatingPort("process init port", this,
251            TranslatingPort::Always);
252    mem_port->setPeer(initVirtMem);
253    initVirtMem->setPeer(mem_port);
254}
255
256// map simulator fd sim_fd to target fd tgt_fd
257void
258Process::dup_fd(int sim_fd, int tgt_fd)
259{
260    if (tgt_fd < 0 || tgt_fd > MAX_FD)
261        panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
262
263    Process::FdMap *fdo = &fd_map[tgt_fd];
264    fdo->fd = sim_fd;
265}
266
267
268// generate new target fd for sim_fd
269int
270Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
271{
272    // in case open() returns an error, don't allocate a new fd
273    if (sim_fd == -1)
274        return -1;
275
276    // find first free target fd
277    for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
278        Process::FdMap *fdo = &fd_map[free_fd];
279        if (fdo->fd == -1) {
280            fdo->fd = sim_fd;
281            fdo->filename = filename;
282            fdo->mode = mode;
283            fdo->fileOffset = 0;
284            fdo->flags = flags;
285            fdo->isPipe = pipe;
286            fdo->readPipeSource = 0;
287            return free_fd;
288        }
289    }
290
291    panic("Process::alloc_fd: out of file descriptors!");
292}
293
294
295// free target fd (e.g., after close)
296void
297Process::free_fd(int tgt_fd)
298{
299    Process::FdMap *fdo = &fd_map[tgt_fd];
300    if (fdo->fd == -1)
301        warn("Process::free_fd: request to free unused fd %d", tgt_fd);
302
303    fdo->fd = -1;
304    fdo->filename = "NULL";
305    fdo->mode = 0;
306    fdo->fileOffset = 0;
307    fdo->flags = 0;
308    fdo->isPipe = false;
309    fdo->readPipeSource = 0;
310}
311
312
313// look up simulator fd for given target fd
314int
315Process::sim_fd(int tgt_fd)
316{
317    if (tgt_fd > MAX_FD)
318        return -1;
319
320    return fd_map[tgt_fd].fd;
321}
322
323Process::FdMap *
324Process::sim_fd_obj(int tgt_fd)
325{
326    if (tgt_fd > MAX_FD)
327        panic("sim_fd_obj called in fd out of range.");
328
329    return &fd_map[tgt_fd];
330}
331bool
332Process::checkAndAllocNextPage(Addr vaddr)
333{
334    // if this is an initial write we might not have
335    if (vaddr >= stack_min && vaddr < stack_base) {
336        pTable->allocate(roundDown(vaddr, VMPageSize), VMPageSize);
337        return true;
338    }
339
340    // We've accessed the next page of the stack, so extend the stack
341    // to cover it.
342    if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
343        while (vaddr < stack_min) {
344            stack_min -= TheISA::PageBytes;
345            if(stack_base - stack_min > max_stack_size)
346                fatal("Maximum stack size exceeded\n");
347            if(stack_base - stack_min > 8*1024*1024)
348                fatal("Over max stack size for one thread\n");
349            pTable->allocate(stack_min, TheISA::PageBytes);
350            inform("Increasing stack size by one page.");
351        };
352        return true;
353    }
354    return false;
355}
356
357 // find all offsets for currently open files and save them
358void
359Process::fix_file_offsets() {
360    Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
361    Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
362    Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
363    string in = fdo_stdin->filename;
364    string out = fdo_stdout->filename;
365    string err = fdo_stderr->filename;
366
367    // initialize file descriptors to default: same as simulator
368    int stdin_fd, stdout_fd, stderr_fd;
369
370    if (in == "stdin" || in == "cin")
371        stdin_fd = STDIN_FILENO;
372    else if (in == "None")
373        stdin_fd = -1;
374    else{
375        //OPEN standard in and seek to the right location
376        stdin_fd = Process::openInputFile(in);
377        if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
378            panic("Unable to seek to correct location in file: %s", in);
379    }
380
381    if (out == "stdout" || out == "cout")
382        stdout_fd = STDOUT_FILENO;
383    else if (out == "stderr" || out == "cerr")
384        stdout_fd = STDERR_FILENO;
385    else if (out == "None")
386        stdout_fd = -1;
387    else{
388        stdout_fd = Process::openOutputFile(out);
389        if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
390            panic("Unable to seek to correct location in file: %s", out);
391    }
392
393    if (err == "stdout" || err == "cout")
394        stderr_fd = STDOUT_FILENO;
395    else if (err == "stderr" || err == "cerr")
396        stderr_fd = STDERR_FILENO;
397    else if (err == "None")
398        stderr_fd = -1;
399    else if (err == out)
400        stderr_fd = stdout_fd;
401    else {
402        stderr_fd = Process::openOutputFile(err);
403        if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
404            panic("Unable to seek to correct location in file: %s", err);
405    }
406
407    fdo_stdin->fd = stdin_fd;
408    fdo_stdout->fd = stdout_fd;
409    fdo_stderr->fd = stderr_fd;
410
411
412    for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
413        Process::FdMap *fdo = &fd_map[free_fd];
414        if (fdo->fd != -1) {
415            if (fdo->isPipe){
416                if (fdo->filename == "PIPE-WRITE")
417                    continue;
418                else {
419                    assert (fdo->filename == "PIPE-READ");
420                    //create a new pipe
421                    int fds[2];
422                    int pipe_retval = pipe(fds);
423
424                    if (pipe_retval < 0) {
425                        // error
426                        panic("Unable to create new pipe.");
427                    }
428                    fdo->fd = fds[0]; //set read pipe
429                    Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
430                    if (fdo_write->filename != "PIPE-WRITE")
431                        panic ("Couldn't find write end of the pipe");
432
433                    fdo_write->fd = fds[1];//set write pipe
434               }
435            } else {
436                //Open file
437                int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
438
439                if (fd == -1)
440                    panic("Unable to open file: %s", fdo->filename);
441                fdo->fd = fd;
442
443                //Seek to correct location before checkpoint
444                if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
445                    panic("Unable to seek to correct location in file: %s", fdo->filename);
446            }
447        }
448    }
449}
450void
451Process::find_file_offsets(){
452    for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
453        Process::FdMap *fdo = &fd_map[free_fd];
454        if (fdo->fd != -1) {
455            fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
456        }  else {
457                fdo->filename = "NULL";
458                fdo->fileOffset = 0;
459        }
460    }
461}
462
463void
464Process::setReadPipeSource(int read_pipe_fd, int source_fd){
465    Process::FdMap *fdo = &fd_map[read_pipe_fd];
466    fdo->readPipeSource = source_fd;
467}
468
469void
470Process::FdMap::serialize(std::ostream &os)
471{
472    SERIALIZE_SCALAR(fd);
473    SERIALIZE_SCALAR(isPipe);
474    SERIALIZE_SCALAR(filename);
475    SERIALIZE_SCALAR(flags);
476    SERIALIZE_SCALAR(readPipeSource);
477    SERIALIZE_SCALAR(fileOffset);
478}
479
480void
481Process::FdMap::unserialize(Checkpoint *cp, const std::string &section)
482{
483    UNSERIALIZE_SCALAR(fd);
484    UNSERIALIZE_SCALAR(isPipe);
485    UNSERIALIZE_SCALAR(filename);
486    UNSERIALIZE_SCALAR(flags);
487    UNSERIALIZE_SCALAR(readPipeSource);
488    UNSERIALIZE_SCALAR(fileOffset);
489}
490
491void
492Process::serialize(std::ostream &os)
493{
494    SERIALIZE_SCALAR(initialContextLoaded);
495    SERIALIZE_SCALAR(brk_point);
496    SERIALIZE_SCALAR(stack_base);
497    SERIALIZE_SCALAR(stack_size);
498    SERIALIZE_SCALAR(stack_min);
499    SERIALIZE_SCALAR(next_thread_stack_base);
500    SERIALIZE_SCALAR(mmap_start);
501    SERIALIZE_SCALAR(mmap_end);
502    SERIALIZE_SCALAR(nxm_start);
503    SERIALIZE_SCALAR(nxm_end);
504    find_file_offsets();
505    pTable->serialize(os);
506    for (int x = 0; x <= MAX_FD; x++) {
507        nameOut(os, csprintf("%s.FdMap%d", name(), x));
508        fd_map[x].serialize(os);
509    }
510    SERIALIZE_SCALAR(M5_pid);
511
512}
513
514void
515Process::unserialize(Checkpoint *cp, const std::string &section)
516{
517    UNSERIALIZE_SCALAR(initialContextLoaded);
518    UNSERIALIZE_SCALAR(brk_point);
519    UNSERIALIZE_SCALAR(stack_base);
520    UNSERIALIZE_SCALAR(stack_size);
521    UNSERIALIZE_SCALAR(stack_min);
522    UNSERIALIZE_SCALAR(next_thread_stack_base);
523    UNSERIALIZE_SCALAR(mmap_start);
524    UNSERIALIZE_SCALAR(mmap_end);
525    UNSERIALIZE_SCALAR(nxm_start);
526    UNSERIALIZE_SCALAR(nxm_end);
527    pTable->unserialize(cp, section);
528    for (int x = 0; x <= MAX_FD; x++) {
529        fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
530     }
531    fix_file_offsets();
532    UNSERIALIZE_OPT_SCALAR(M5_pid);
533    // The above returns a bool so that you could do something if you don't
534    // find the param in the checkpoint if you wanted to, like set a default
535    // but in this case we'll just stick with the instantianted value if not
536    // found.
537
538    checkpointRestored = true;
539
540}
541
542
543////////////////////////////////////////////////////////////////////////
544//
545// LiveProcess member definitions
546//
547////////////////////////////////////////////////////////////////////////
548
549
550LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
551    : Process(params), objFile(_objFile),
552      argv(params->cmd), envp(params->env), cwd(params->cwd)
553{
554    __uid = params->uid;
555    __euid = params->euid;
556    __gid = params->gid;
557    __egid = params->egid;
558    __pid = params->pid;
559    __ppid = params->ppid;
560
561    prog_fname = params->cmd[0];
562
563    // load up symbols, if any... these may be used for debugging or
564    // profiling.
565    if (!debugSymbolTable) {
566        debugSymbolTable = new SymbolTable();
567        if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
568            !objFile->loadLocalSymbols(debugSymbolTable)) {
569            // didn't load any symbols
570            delete debugSymbolTable;
571            debugSymbolTable = NULL;
572        }
573    }
574}
575
576void
577LiveProcess::argsInit(int intSize, int pageSize)
578{
579    Process::startup();
580
581    // load object file into target memory
582    objFile->loadSections(initVirtMem);
583
584    // Calculate how much space we need for arg & env arrays.
585    int argv_array_size = intSize * (argv.size() + 1);
586    int envp_array_size = intSize * (envp.size() + 1);
587    int arg_data_size = 0;
588    for (vector<string>::size_type i = 0; i < argv.size(); ++i) {
589        arg_data_size += argv[i].size() + 1;
590    }
591    int env_data_size = 0;
592    for (vector<string>::size_type i = 0; i < envp.size(); ++i) {
593        env_data_size += envp[i].size() + 1;
594    }
595
596    int space_needed =
597        argv_array_size + envp_array_size + arg_data_size + env_data_size;
598    if (space_needed < 32*1024)
599        space_needed = 32*1024;
600
601    // set bottom of stack
602    stack_min = stack_base - space_needed;
603    // align it
604    stack_min = roundDown(stack_min, pageSize);
605    stack_size = stack_base - stack_min;
606    // map memory
607    pTable->allocate(stack_min, roundUp(stack_size, pageSize));
608
609    // map out initial stack contents
610    Addr argv_array_base = stack_min + intSize; // room for argc
611    Addr envp_array_base = argv_array_base + argv_array_size;
612    Addr arg_data_base = envp_array_base + envp_array_size;
613    Addr env_data_base = arg_data_base + arg_data_size;
614
615    // write contents to stack
616    uint64_t argc = argv.size();
617    if (intSize == 8)
618        argc = htog((uint64_t)argc);
619    else if (intSize == 4)
620        argc = htog((uint32_t)argc);
621    else
622        panic("Unknown int size");
623
624    initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
625
626    copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
627    copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
628
629    ThreadContext *tc = system->getThreadContext(contextIds[0]);
630
631    setSyscallArg(tc, 0, argc);
632    setSyscallArg(tc, 1, argv_array_base);
633    tc->setIntReg(StackPointerReg, stack_min);
634
635    Addr prog_entry = objFile->entryPoint();
636    tc->setPC(prog_entry);
637    tc->setNextPC(prog_entry + sizeof(MachInst));
638
639#if THE_ISA != ALPHA_ISA && THE_ISA != POWER_ISA //e.g. MIPS or Sparc
640    tc->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
641#endif
642
643    num_processes++;
644}
645
646void
647LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
648{
649    num_syscalls++;
650
651    SyscallDesc *desc = getDesc(callnum);
652    if (desc == NULL)
653        fatal("Syscall %d out of range", callnum);
654
655    desc->doSyscall(callnum, this, tc);
656}
657
658IntReg
659LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
660{
661    return getSyscallArg(tc, i);
662}
663
664LiveProcess *
665LiveProcess::create(LiveProcessParams * params)
666{
667    LiveProcess *process = NULL;
668
669    string executable =
670        params->executable == "" ? params->cmd[0] : params->executable;
671    ObjectFile *objFile = createObjectFile(executable);
672    if (objFile == NULL) {
673        fatal("Can't load object file %s", executable);
674    }
675
676    if (objFile->isDynamic())
677       fatal("Object file is a dynamic executable however only static "
678             "executables are supported!\n       Please recompile your "
679             "executable as a static binary and try again.\n");
680
681#if THE_ISA == ALPHA_ISA
682    if (objFile->getArch() != ObjectFile::Alpha)
683        fatal("Object file architecture does not match compiled ISA (Alpha).");
684
685    switch (objFile->getOpSys()) {
686      case ObjectFile::Tru64:
687        process = new AlphaTru64Process(params, objFile);
688        break;
689
690      case ObjectFile::UnknownOpSys:
691        warn("Unknown operating system; assuming Linux.");
692        // fall through
693      case ObjectFile::Linux:
694        process = new AlphaLinuxProcess(params, objFile);
695        break;
696
697      default:
698        fatal("Unknown/unsupported operating system.");
699    }
700#elif THE_ISA == SPARC_ISA
701    if (objFile->getArch() != ObjectFile::SPARC64 &&
702        objFile->getArch() != ObjectFile::SPARC32)
703        fatal("Object file architecture does not match compiled ISA (SPARC).");
704    switch (objFile->getOpSys()) {
705      case ObjectFile::UnknownOpSys:
706        warn("Unknown operating system; assuming Linux.");
707        // fall through
708      case ObjectFile::Linux:
709        if (objFile->getArch() == ObjectFile::SPARC64) {
710            process = new Sparc64LinuxProcess(params, objFile);
711        } else {
712            process = new Sparc32LinuxProcess(params, objFile);
713        }
714        break;
715
716
717      case ObjectFile::Solaris:
718        process = new SparcSolarisProcess(params, objFile);
719        break;
720
721      default:
722        fatal("Unknown/unsupported operating system.");
723    }
724#elif THE_ISA == X86_ISA
725    if (objFile->getArch() != ObjectFile::X86_64 &&
726        objFile->getArch() != ObjectFile::I386)
727        fatal("Object file architecture does not match compiled ISA (x86).");
728    switch (objFile->getOpSys()) {
729      case ObjectFile::UnknownOpSys:
730        warn("Unknown operating system; assuming Linux.");
731        // fall through
732      case ObjectFile::Linux:
733        if (objFile->getArch() == ObjectFile::X86_64) {
734            process = new X86_64LinuxProcess(params, objFile);
735        } else {
736            process = new I386LinuxProcess(params, objFile);
737        }
738        break;
739
740      default:
741        fatal("Unknown/unsupported operating system.");
742    }
743#elif THE_ISA == MIPS_ISA
744    if (objFile->getArch() != ObjectFile::Mips)
745        fatal("Object file architecture does not match compiled ISA (MIPS).");
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 MipsLinuxProcess(params, objFile);
752        break;
753
754      default:
755        fatal("Unknown/unsupported operating system.");
756    }
757#elif THE_ISA == ARM_ISA
758    if (objFile->getArch() != ObjectFile::Arm &&
759        objFile->getArch() != ObjectFile::Thumb)
760        fatal("Object file architecture does not match compiled ISA (ARM).");
761    switch (objFile->getOpSys()) {
762      case ObjectFile::UnknownOpSys:
763        warn("Unknown operating system; assuming Linux.");
764        // fall through
765      case ObjectFile::Linux:
766        process = new ArmLinuxProcess(params, objFile, objFile->getArch());
767        break;
768      case ObjectFile::LinuxArmOABI:
769        fatal("M5 does not support ARM OABI binaries. Please recompile with an"
770              " EABI compiler.");
771      default:
772        fatal("Unknown/unsupported operating system.");
773    }
774#elif THE_ISA == POWER_ISA
775    if (objFile->getArch() != ObjectFile::Power)
776        fatal("Object file architecture does not match compiled ISA (Power).");
777    switch (objFile->getOpSys()) {
778      case ObjectFile::UnknownOpSys:
779        warn("Unknown operating system; assuming Linux.");
780        // fall through
781      case ObjectFile::Linux:
782        process = new PowerLinuxProcess(params, objFile);
783        break;
784
785      default:
786        fatal("Unknown/unsupported operating system.");
787    }
788#else
789#error "THE_ISA not set"
790#endif
791
792
793    if (process == NULL)
794        fatal("Unknown error creating process object.");
795    return process;
796}
797
798LiveProcess *
799LiveProcessParams::create()
800{
801    return LiveProcess::create(this);
802}
803