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