process.cc revision 8796:a2ae5c378d0a
1/*
2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 *          Steve Reinhardt
30 *          Ali Saidi
31 */
32
33#include <fcntl.h>
34#include <unistd.h>
35
36#include <cstdio>
37#include <string>
38
39#include "base/loader/object_file.hh"
40#include "base/loader/symtab.hh"
41#include "base/intmath.hh"
42#include "base/statistics.hh"
43#include "config/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/LiveProcess.hh"
49#include "params/Process.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
76using namespace std;
77using namespace TheISA;
78
79// current number of allocated processes
80int num_processes = 0;
81
82template<class IntType>
83AuxVector<IntType>::AuxVector(IntType type, IntType val)
84{
85    a_type = TheISA::htog(type);
86    a_val = TheISA::htog(val);
87}
88
89template class AuxVector<uint32_t>;
90template class AuxVector<uint64_t>;
91
92Process::Process(ProcessParams * params)
93    : SimObject(params), system(params->system),
94      max_stack_size(params->max_stack_size)
95{
96    string in = params->input;
97    string out = params->output;
98    string err = params->errout;
99
100    // initialize file descriptors to default: same as simulator
101    int stdin_fd, stdout_fd, stderr_fd;
102
103    if (in == "stdin" || in == "cin")
104        stdin_fd = STDIN_FILENO;
105    else if (in == "None")
106        stdin_fd = -1;
107    else
108        stdin_fd = Process::openInputFile(in);
109
110    if (out == "stdout" || out == "cout")
111        stdout_fd = STDOUT_FILENO;
112    else if (out == "stderr" || out == "cerr")
113        stdout_fd = STDERR_FILENO;
114    else if (out == "None")
115        stdout_fd = -1;
116    else
117        stdout_fd = Process::openOutputFile(out);
118
119    if (err == "stdout" || err == "cout")
120        stderr_fd = STDOUT_FILENO;
121    else if (err == "stderr" || err == "cerr")
122        stderr_fd = STDERR_FILENO;
123    else if (err == "None")
124        stderr_fd = -1;
125    else if (err == out)
126        stderr_fd = stdout_fd;
127    else
128        stderr_fd = Process::openOutputFile(err);
129
130    M5_pid = system->allocatePID();
131    // initialize first 3 fds (stdin, stdout, stderr)
132    Process::FdMap *fdo = &fd_map[STDIN_FILENO];
133    fdo->fd = stdin_fd;
134    fdo->filename = in;
135    fdo->flags = O_RDONLY;
136    fdo->mode = -1;
137    fdo->fileOffset = 0;
138
139    fdo =  &fd_map[STDOUT_FILENO];
140    fdo->fd = stdout_fd;
141    fdo->filename = out;
142    fdo->flags =  O_WRONLY | O_CREAT | O_TRUNC;
143    fdo->mode = 0774;
144    fdo->fileOffset = 0;
145
146    fdo = &fd_map[STDERR_FILENO];
147    fdo->fd = stderr_fd;
148    fdo->filename = err;
149    fdo->flags = O_WRONLY;
150    fdo->mode = -1;
151    fdo->fileOffset = 0;
152
153
154    // mark remaining fds as free
155    for (int i = 3; i <= MAX_FD; ++i) {
156        Process::FdMap *fdo = &fd_map[i];
157        fdo->fd = -1;
158    }
159
160    mmap_start = mmap_end = 0;
161    nxm_start = nxm_end = 0;
162    pTable = new PageTable(name(), M5_pid);
163    // other parameters will be initialized when the program is loaded
164}
165
166
167void
168Process::regStats()
169{
170    using namespace Stats;
171
172    num_syscalls
173        .name(name() + ".num_syscalls")
174        .desc("Number of system calls")
175        ;
176}
177
178//
179// static helper functions
180//
181int
182Process::openInputFile(const string &filename)
183{
184    int fd = open(filename.c_str(), O_RDONLY);
185
186    if (fd == -1) {
187        perror(NULL);
188        cerr << "unable to open \"" << filename << "\" for reading\n";
189        fatal("can't open input file");
190    }
191
192    return fd;
193}
194
195
196int
197Process::openOutputFile(const string &filename)
198{
199    int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664);
200
201    if (fd == -1) {
202        perror(NULL);
203        cerr << "unable to open \"" << filename << "\" for writing\n";
204        fatal("can't open output file");
205    }
206
207    return fd;
208}
209
210ThreadContext *
211Process::findFreeContext()
212{
213    int size = contextIds.size();
214    ThreadContext *tc;
215    for (int i = 0; i < size; ++i) {
216        tc = system->getThreadContext(contextIds[i]);
217        if (tc->status() == ThreadContext::Halted) {
218            // inactive context, free to use
219            return tc;
220        }
221    }
222    return NULL;
223}
224
225void
226Process::initState()
227{
228    if (contextIds.empty())
229        fatal("Process %s is not associated with any HW contexts!\n", name());
230
231    // first thread context for this process... initialize & enable
232    ThreadContext *tc = system->getThreadContext(contextIds[0]);
233
234    // mark this context as active so it will start ticking.
235    tc->activate(0);
236
237    Port *mem_port;
238    mem_port = system->physmem->getPort("functional");
239    initVirtMem = new TranslatingPort("process init port", this,
240            TranslatingPort::Always);
241    mem_port->setPeer(initVirtMem);
242    initVirtMem->setPeer(mem_port);
243}
244
245// map simulator fd sim_fd to target fd tgt_fd
246void
247Process::dup_fd(int sim_fd, int tgt_fd)
248{
249    if (tgt_fd < 0 || tgt_fd > MAX_FD)
250        panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
251
252    Process::FdMap *fdo = &fd_map[tgt_fd];
253    fdo->fd = sim_fd;
254}
255
256
257// generate new target fd for sim_fd
258int
259Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
260{
261    // in case open() returns an error, don't allocate a new fd
262    if (sim_fd == -1)
263        return -1;
264
265    // find first free target fd
266    for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
267        Process::FdMap *fdo = &fd_map[free_fd];
268        if (fdo->fd == -1) {
269            fdo->fd = sim_fd;
270            fdo->filename = filename;
271            fdo->mode = mode;
272            fdo->fileOffset = 0;
273            fdo->flags = flags;
274            fdo->isPipe = pipe;
275            fdo->readPipeSource = 0;
276            return free_fd;
277        }
278    }
279
280    panic("Process::alloc_fd: out of file descriptors!");
281}
282
283
284// free target fd (e.g., after close)
285void
286Process::free_fd(int tgt_fd)
287{
288    Process::FdMap *fdo = &fd_map[tgt_fd];
289    if (fdo->fd == -1)
290        warn("Process::free_fd: request to free unused fd %d", tgt_fd);
291
292    fdo->fd = -1;
293    fdo->filename = "NULL";
294    fdo->mode = 0;
295    fdo->fileOffset = 0;
296    fdo->flags = 0;
297    fdo->isPipe = false;
298    fdo->readPipeSource = 0;
299}
300
301
302// look up simulator fd for given target fd
303int
304Process::sim_fd(int tgt_fd)
305{
306    if (tgt_fd < 0 || tgt_fd > MAX_FD)
307        return -1;
308
309    return fd_map[tgt_fd].fd;
310}
311
312Process::FdMap *
313Process::sim_fd_obj(int tgt_fd)
314{
315    if (tgt_fd < 0 || tgt_fd > MAX_FD)
316        return NULL;
317
318    return &fd_map[tgt_fd];
319}
320
321void
322Process::allocateMem(Addr vaddr, int64_t size, bool clobber)
323{
324    int npages = divCeil(size, (int64_t)VMPageSize);
325    Addr paddr = system->allocPhysPages(npages);
326    pTable->map(vaddr, paddr, size, clobber);
327}
328
329bool
330Process::fixupStackFault(Addr vaddr)
331{
332    // Check if this is already on the stack and there's just no page there
333    // yet.
334    if (vaddr >= stack_min && vaddr < stack_base) {
335        allocateMem(roundDown(vaddr, VMPageSize), VMPageSize);
336        return true;
337    }
338
339    // We've accessed the next page of the stack, so extend it to include
340    // this address.
341    if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) {
342        while (vaddr < stack_min) {
343            stack_min -= TheISA::PageBytes;
344            if (stack_base - stack_min > max_stack_size)
345                fatal("Maximum stack size exceeded\n");
346            if (stack_base - stack_min > 8 * 1024 * 1024)
347                fatal("Over max stack size for one thread\n");
348            allocateMem(stack_min, TheISA::PageBytes);
349            inform("Increasing stack size by one page.");
350        };
351        return true;
352    }
353    return false;
354}
355
356// find all offsets for currently open files and save them
357void
358Process::fix_file_offsets()
359{
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",
446                          fdo->filename);
447            }
448        }
449    }
450}
451
452void
453Process::find_file_offsets()
454{
455    for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
456        Process::FdMap *fdo = &fd_map[free_fd];
457        if (fdo->fd != -1) {
458            fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
459        } else {
460                fdo->filename = "NULL";
461                fdo->fileOffset = 0;
462        }
463    }
464}
465
466void
467Process::setReadPipeSource(int read_pipe_fd, int source_fd)
468{
469    Process::FdMap *fdo = &fd_map[read_pipe_fd];
470    fdo->readPipeSource = source_fd;
471}
472
473void
474Process::FdMap::serialize(std::ostream &os)
475{
476    SERIALIZE_SCALAR(fd);
477    SERIALIZE_SCALAR(isPipe);
478    SERIALIZE_SCALAR(filename);
479    SERIALIZE_SCALAR(flags);
480    SERIALIZE_SCALAR(readPipeSource);
481    SERIALIZE_SCALAR(fileOffset);
482}
483
484void
485Process::FdMap::unserialize(Checkpoint *cp, const std::string &section)
486{
487    UNSERIALIZE_SCALAR(fd);
488    UNSERIALIZE_SCALAR(isPipe);
489    UNSERIALIZE_SCALAR(filename);
490    UNSERIALIZE_SCALAR(flags);
491    UNSERIALIZE_SCALAR(readPipeSource);
492    UNSERIALIZE_SCALAR(fileOffset);
493}
494
495void
496Process::serialize(std::ostream &os)
497{
498    SERIALIZE_SCALAR(brk_point);
499    SERIALIZE_SCALAR(stack_base);
500    SERIALIZE_SCALAR(stack_size);
501    SERIALIZE_SCALAR(stack_min);
502    SERIALIZE_SCALAR(next_thread_stack_base);
503    SERIALIZE_SCALAR(mmap_start);
504    SERIALIZE_SCALAR(mmap_end);
505    SERIALIZE_SCALAR(nxm_start);
506    SERIALIZE_SCALAR(nxm_end);
507    find_file_offsets();
508    pTable->serialize(os);
509    for (int x = 0; x <= MAX_FD; x++) {
510        nameOut(os, csprintf("%s.FdMap%d", name(), x));
511        fd_map[x].serialize(os);
512    }
513    SERIALIZE_SCALAR(M5_pid);
514
515}
516
517void
518Process::unserialize(Checkpoint *cp, const std::string &section)
519{
520    UNSERIALIZE_SCALAR(brk_point);
521    UNSERIALIZE_SCALAR(stack_base);
522    UNSERIALIZE_SCALAR(stack_size);
523    UNSERIALIZE_SCALAR(stack_min);
524    UNSERIALIZE_SCALAR(next_thread_stack_base);
525    UNSERIALIZE_SCALAR(mmap_start);
526    UNSERIALIZE_SCALAR(mmap_end);
527    UNSERIALIZE_SCALAR(nxm_start);
528    UNSERIALIZE_SCALAR(nxm_end);
529    pTable->unserialize(cp, section);
530    for (int x = 0; x <= MAX_FD; x++) {
531        fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
532    }
533    fix_file_offsets();
534    UNSERIALIZE_OPT_SCALAR(M5_pid);
535    // The above returns a bool so that you could do something if you don't
536    // find the param in the checkpoint if you wanted to, like set a default
537    // but in this case we'll just stick with the instantianted value if not
538    // found.
539}
540
541
542////////////////////////////////////////////////////////////////////////
543//
544// LiveProcess member definitions
545//
546////////////////////////////////////////////////////////////////////////
547
548
549LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
550    : Process(params), objFile(_objFile),
551      argv(params->cmd), envp(params->env), cwd(params->cwd)
552{
553    __uid = params->uid;
554    __euid = params->euid;
555    __gid = params->gid;
556    __egid = params->egid;
557    __pid = params->pid;
558    __ppid = params->ppid;
559
560    prog_fname = params->cmd[0];
561
562    // load up symbols, if any... these may be used for debugging or
563    // profiling.
564    if (!debugSymbolTable) {
565        debugSymbolTable = new SymbolTable();
566        if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
567            !objFile->loadLocalSymbols(debugSymbolTable)) {
568            // didn't load any symbols
569            delete debugSymbolTable;
570            debugSymbolTable = NULL;
571        }
572    }
573}
574
575void
576LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
577{
578    num_syscalls++;
579
580    SyscallDesc *desc = getDesc(callnum);
581    if (desc == NULL)
582        fatal("Syscall %d out of range", callnum);
583
584    desc->doSyscall(callnum, this, tc);
585}
586
587IntReg
588LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
589{
590    return getSyscallArg(tc, i);
591}
592
593LiveProcess *
594LiveProcess::create(LiveProcessParams * params)
595{
596    LiveProcess *process = NULL;
597
598    string executable =
599        params->executable == "" ? params->cmd[0] : params->executable;
600    ObjectFile *objFile = createObjectFile(executable);
601    if (objFile == NULL) {
602        fatal("Can't load object file %s", executable);
603    }
604
605    if (objFile->isDynamic())
606       fatal("Object file is a dynamic executable however only static "
607             "executables are supported!\n       Please recompile your "
608             "executable as a static binary and try again.\n");
609
610#if THE_ISA == ALPHA_ISA
611    if (objFile->getArch() != ObjectFile::Alpha)
612        fatal("Object file architecture does not match compiled ISA (Alpha).");
613
614    switch (objFile->getOpSys()) {
615      case ObjectFile::Tru64:
616        process = new AlphaTru64Process(params, objFile);
617        break;
618
619      case ObjectFile::UnknownOpSys:
620        warn("Unknown operating system; assuming Linux.");
621        // fall through
622      case ObjectFile::Linux:
623        process = new AlphaLinuxProcess(params, objFile);
624        break;
625
626      default:
627        fatal("Unknown/unsupported operating system.");
628    }
629#elif THE_ISA == SPARC_ISA
630    if (objFile->getArch() != ObjectFile::SPARC64 &&
631        objFile->getArch() != ObjectFile::SPARC32)
632        fatal("Object file architecture does not match compiled ISA (SPARC).");
633    switch (objFile->getOpSys()) {
634      case ObjectFile::UnknownOpSys:
635        warn("Unknown operating system; assuming Linux.");
636        // fall through
637      case ObjectFile::Linux:
638        if (objFile->getArch() == ObjectFile::SPARC64) {
639            process = new Sparc64LinuxProcess(params, objFile);
640        } else {
641            process = new Sparc32LinuxProcess(params, objFile);
642        }
643        break;
644
645
646      case ObjectFile::Solaris:
647        process = new SparcSolarisProcess(params, objFile);
648        break;
649
650      default:
651        fatal("Unknown/unsupported operating system.");
652    }
653#elif THE_ISA == X86_ISA
654    if (objFile->getArch() != ObjectFile::X86_64 &&
655        objFile->getArch() != ObjectFile::I386)
656        fatal("Object file architecture does not match compiled ISA (x86).");
657    switch (objFile->getOpSys()) {
658      case ObjectFile::UnknownOpSys:
659        warn("Unknown operating system; assuming Linux.");
660        // fall through
661      case ObjectFile::Linux:
662        if (objFile->getArch() == ObjectFile::X86_64) {
663            process = new X86_64LinuxProcess(params, objFile);
664        } else {
665            process = new I386LinuxProcess(params, objFile);
666        }
667        break;
668
669      default:
670        fatal("Unknown/unsupported operating system.");
671    }
672#elif THE_ISA == MIPS_ISA
673    if (objFile->getArch() != ObjectFile::Mips)
674        fatal("Object file architecture does not match compiled ISA (MIPS).");
675    switch (objFile->getOpSys()) {
676      case ObjectFile::UnknownOpSys:
677        warn("Unknown operating system; assuming Linux.");
678        // fall through
679      case ObjectFile::Linux:
680        process = new MipsLinuxProcess(params, objFile);
681        break;
682
683      default:
684        fatal("Unknown/unsupported operating system.");
685    }
686#elif THE_ISA == ARM_ISA
687    if (objFile->getArch() != ObjectFile::Arm &&
688        objFile->getArch() != ObjectFile::Thumb)
689        fatal("Object file architecture does not match compiled ISA (ARM).");
690    switch (objFile->getOpSys()) {
691      case ObjectFile::UnknownOpSys:
692        warn("Unknown operating system; assuming Linux.");
693        // fall through
694      case ObjectFile::Linux:
695        process = new ArmLinuxProcess(params, objFile, objFile->getArch());
696        break;
697      case ObjectFile::LinuxArmOABI:
698        fatal("M5 does not support ARM OABI binaries. Please recompile with an"
699              " EABI compiler.");
700      default:
701        fatal("Unknown/unsupported operating system.");
702    }
703#elif THE_ISA == POWER_ISA
704    if (objFile->getArch() != ObjectFile::Power)
705        fatal("Object file architecture does not match compiled ISA (Power).");
706    switch (objFile->getOpSys()) {
707      case ObjectFile::UnknownOpSys:
708        warn("Unknown operating system; assuming Linux.");
709        // fall through
710      case ObjectFile::Linux:
711        process = new PowerLinuxProcess(params, objFile);
712        break;
713
714      default:
715        fatal("Unknown/unsupported operating system.");
716    }
717#else
718#error "THE_ISA not set"
719#endif
720
721    if (process == NULL)
722        fatal("Unknown error creating process object.");
723    return process;
724}
725
726LiveProcess *
727LiveProcessParams::create()
728{
729    return LiveProcess::create(this);
730}
731