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/translating_port.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 class AuxVector<uint32_t>;
100template class 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(this);
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 Port *mem_port;
248 mem_port = system->physmem->getPort("functional");
249 initVirtMem = new TranslatingPort("process init port", this,
250 TranslatingPort::Always);
251 mem_port->setPeer(initVirtMem);
252 initVirtMem->setPeer(mem_port);
253}
254
255// map simulator fd sim_fd to target fd tgt_fd
256void
257Process::dup_fd(int sim_fd, int tgt_fd)
258{
259 if (tgt_fd < 0 || tgt_fd > MAX_FD)
260 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
261
262 Process::FdMap *fdo = &fd_map[tgt_fd];
263 fdo->fd = sim_fd;
264}
265
266
267// generate new target fd for sim_fd
268int
269Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
270{
271 // in case open() returns an error, don't allocate a new fd
272 if (sim_fd == -1)
273 return -1;
274
275 // find first free target fd
276 for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
277 Process::FdMap *fdo = &fd_map[free_fd];
278 if (fdo->fd == -1) {
279 fdo->fd = sim_fd;
280 fdo->filename = filename;
281 fdo->mode = mode;
282 fdo->fileOffset = 0;
283 fdo->flags = flags;
284 fdo->isPipe = pipe;
285 fdo->readPipeSource = 0;
286 return free_fd;
287 }
288 }
289
290 panic("Process::alloc_fd: out of file descriptors!");
291}
292
293
294// free target fd (e.g., after close)
295void
296Process::free_fd(int tgt_fd)
297{
298 Process::FdMap *fdo = &fd_map[tgt_fd];
299 if (fdo->fd == -1)
300 warn("Process::free_fd: request to free unused fd %d", tgt_fd);
301
302 fdo->fd = -1;
303 fdo->filename = "NULL";
304 fdo->mode = 0;
305 fdo->fileOffset = 0;
306 fdo->flags = 0;
307 fdo->isPipe = false;
308 fdo->readPipeSource = 0;
309}
310
311
312// look up simulator fd for given target fd
313int
314Process::sim_fd(int tgt_fd)
315{
316 if (tgt_fd < 0 || tgt_fd > MAX_FD)
317 return -1;
318
319 return fd_map[tgt_fd].fd;
320}
321
322Process::FdMap *
323Process::sim_fd_obj(int tgt_fd)
324{
325 if (tgt_fd < 0 || tgt_fd > MAX_FD)
326 return NULL;
327
328 return &fd_map[tgt_fd];
329}
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 warn("Not increasing stack: requested vaddr is outside of stack range.");
355 return false;
356}
357
358// find all offsets for currently open files and save them
359void
360Process::fix_file_offsets()
361{
362 Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
363 Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
364 Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
365 string in = fdo_stdin->filename;
366 string out = fdo_stdout->filename;
367 string err = fdo_stderr->filename;
368
369 // initialize file descriptors to default: same as simulator
370 int stdin_fd, stdout_fd, stderr_fd;
371
372 if (in == "stdin" || in == "cin")
373 stdin_fd = STDIN_FILENO;
374 else if (in == "None")
375 stdin_fd = -1;
376 else {
377 // open standard in and seek to the right location
378 stdin_fd = Process::openInputFile(in);
379 if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
380 panic("Unable to seek to correct location in file: %s", in);
381 }
382
383 if (out == "stdout" || out == "cout")
384 stdout_fd = STDOUT_FILENO;
385 else if (out == "stderr" || out == "cerr")
386 stdout_fd = STDERR_FILENO;
387 else if (out == "None")
388 stdout_fd = -1;
389 else {
390 stdout_fd = Process::openOutputFile(out);
391 if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
392 panic("Unable to seek to correct location in file: %s", out);
393 }
394
395 if (err == "stdout" || err == "cout")
396 stderr_fd = STDOUT_FILENO;
397 else if (err == "stderr" || err == "cerr")
398 stderr_fd = STDERR_FILENO;
399 else if (err == "None")
400 stderr_fd = -1;
401 else if (err == out)
402 stderr_fd = stdout_fd;
403 else {
404 stderr_fd = Process::openOutputFile(err);
405 if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
406 panic("Unable to seek to correct location in file: %s", err);
407 }
408
409 fdo_stdin->fd = stdin_fd;
410 fdo_stdout->fd = stdout_fd;
411 fdo_stderr->fd = stderr_fd;
412
413
414 for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
415 Process::FdMap *fdo = &fd_map[free_fd];
416 if (fdo->fd != -1) {
417 if (fdo->isPipe){
418 if (fdo->filename == "PIPE-WRITE")
419 continue;
420 else {
421 assert (fdo->filename == "PIPE-READ");
422 //create a new pipe
423 int fds[2];
424 int pipe_retval = pipe(fds);
425
426 if (pipe_retval < 0) {
427 // error
428 panic("Unable to create new pipe.");
429 }
430 fdo->fd = fds[0]; //set read pipe
431 Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
432 if (fdo_write->filename != "PIPE-WRITE")
433 panic ("Couldn't find write end of the pipe");
434
435 fdo_write->fd = fds[1];//set write pipe
436 }
437 } else {
438 //Open file
439 int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
440
441 if (fd == -1)
442 panic("Unable to open file: %s", fdo->filename);
443 fdo->fd = fd;
444
445 //Seek to correct location before checkpoint
446 if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
447 panic("Unable to seek to correct location in file: %s",
448 fdo->filename);
449 }
450 }
451 }
452}
453
454void
455Process::find_file_offsets()
456{
457 for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
458 Process::FdMap *fdo = &fd_map[free_fd];
459 if (fdo->fd != -1) {
460 fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
461 } else {
462 fdo->filename = "NULL";
463 fdo->fileOffset = 0;
464 }
465 }
466}
467
468void
469Process::setReadPipeSource(int read_pipe_fd, int source_fd)
470{
471 Process::FdMap *fdo = &fd_map[read_pipe_fd];
472 fdo->readPipeSource = source_fd;
473}
474
475void
476Process::FdMap::serialize(std::ostream &os)
477{
478 SERIALIZE_SCALAR(fd);
479 SERIALIZE_SCALAR(isPipe);
480 SERIALIZE_SCALAR(filename);
481 SERIALIZE_SCALAR(flags);
482 SERIALIZE_SCALAR(readPipeSource);
483 SERIALIZE_SCALAR(fileOffset);
484}
485
486void
487Process::FdMap::unserialize(Checkpoint *cp, const std::string §ion)
488{
489 UNSERIALIZE_SCALAR(fd);
490 UNSERIALIZE_SCALAR(isPipe);
491 UNSERIALIZE_SCALAR(filename);
492 UNSERIALIZE_SCALAR(flags);
493 UNSERIALIZE_SCALAR(readPipeSource);
494 UNSERIALIZE_SCALAR(fileOffset);
495}
496
497void
498Process::serialize(std::ostream &os)
499{
500 SERIALIZE_SCALAR(brk_point);
501 SERIALIZE_SCALAR(stack_base);
502 SERIALIZE_SCALAR(stack_size);
503 SERIALIZE_SCALAR(stack_min);
504 SERIALIZE_SCALAR(next_thread_stack_base);
505 SERIALIZE_SCALAR(mmap_start);
506 SERIALIZE_SCALAR(mmap_end);
507 SERIALIZE_SCALAR(nxm_start);
508 SERIALIZE_SCALAR(nxm_end);
509 find_file_offsets();
510 pTable->serialize(os);
511 for (int x = 0; x <= MAX_FD; x++) {
512 nameOut(os, csprintf("%s.FdMap%d", name(), x));
513 fd_map[x].serialize(os);
514 }
515 SERIALIZE_SCALAR(M5_pid);
516
517}
518
519void
520Process::unserialize(Checkpoint *cp, const std::string §ion)
521{
522 UNSERIALIZE_SCALAR(brk_point);
523 UNSERIALIZE_SCALAR(stack_base);
524 UNSERIALIZE_SCALAR(stack_size);
525 UNSERIALIZE_SCALAR(stack_min);
526 UNSERIALIZE_SCALAR(next_thread_stack_base);
527 UNSERIALIZE_SCALAR(mmap_start);
528 UNSERIALIZE_SCALAR(mmap_end);
529 UNSERIALIZE_SCALAR(nxm_start);
530 UNSERIALIZE_SCALAR(nxm_end);
531 pTable->unserialize(cp, section);
532 for (int x = 0; x <= MAX_FD; x++) {
533 fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
534 }
535 fix_file_offsets();
536 UNSERIALIZE_OPT_SCALAR(M5_pid);
537 // The above returns a bool so that you could do something if you don't
538 // find the param in the checkpoint if you wanted to, like set a default
539 // but in this case we'll just stick with the instantianted value if not
540 // found.
541}
542
543
544////////////////////////////////////////////////////////////////////////
545//
546// LiveProcess member definitions
547//
548////////////////////////////////////////////////////////////////////////
549
550
551LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
552 : Process(params), objFile(_objFile),
553 argv(params->cmd), envp(params->env), cwd(params->cwd)
554{
555 __uid = params->uid;
556 __euid = params->euid;
557 __gid = params->gid;
558 __egid = params->egid;
559 __pid = params->pid;
560 __ppid = params->ppid;
561
562 prog_fname = params->cmd[0];
563
564 // load up symbols, if any... these may be used for debugging or
565 // profiling.
566 if (!debugSymbolTable) {
567 debugSymbolTable = new SymbolTable();
568 if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
569 !objFile->loadLocalSymbols(debugSymbolTable)) {
570 // didn't load any symbols
571 delete debugSymbolTable;
572 debugSymbolTable = NULL;
573 }
574 }
575}
576
577void
578LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
579{
580 num_syscalls++;
581
582 SyscallDesc *desc = getDesc(callnum);
583 if (desc == NULL)
584 fatal("Syscall %d out of range", callnum);
585
586 desc->doSyscall(callnum, this, tc);
587}
588
589IntReg
590LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
591{
592 return getSyscallArg(tc, i);
593}
594
595LiveProcess *
596LiveProcess::create(LiveProcessParams * params)
597{
598 LiveProcess *process = NULL;
599
600 string executable =
601 params->executable == "" ? params->cmd[0] : params->executable;
602 ObjectFile *objFile = createObjectFile(executable);
603 if (objFile == NULL) {
604 fatal("Can't load object file %s", executable);
605 }
606
607 if (objFile->isDynamic())
608 fatal("Object file is a dynamic executable however only static "
609 "executables are supported!\n Please recompile your "
610 "executable as a static binary and try again.\n");
611
612#if THE_ISA == ALPHA_ISA
613 if (objFile->getArch() != ObjectFile::Alpha)
614 fatal("Object file architecture does not match compiled ISA (Alpha).");
615
616 switch (objFile->getOpSys()) {
617 case ObjectFile::Tru64:
618 process = new AlphaTru64Process(params, objFile);
619 break;
620
621 case ObjectFile::UnknownOpSys:
622 warn("Unknown operating system; assuming Linux.");
623 // fall through
624 case ObjectFile::Linux:
625 process = new AlphaLinuxProcess(params, objFile);
626 break;
627
628 default:
629 fatal("Unknown/unsupported operating system.");
630 }
631#elif THE_ISA == SPARC_ISA
632 if (objFile->getArch() != ObjectFile::SPARC64 &&
633 objFile->getArch() != ObjectFile::SPARC32)
634 fatal("Object file architecture does not match compiled ISA (SPARC).");
635 switch (objFile->getOpSys()) {
636 case ObjectFile::UnknownOpSys:
637 warn("Unknown operating system; assuming Linux.");
638 // fall through
639 case ObjectFile::Linux:
640 if (objFile->getArch() == ObjectFile::SPARC64) {
641 process = new Sparc64LinuxProcess(params, objFile);
642 } else {
643 process = new Sparc32LinuxProcess(params, objFile);
644 }
645 break;
646
647
648 case ObjectFile::Solaris:
649 process = new SparcSolarisProcess(params, objFile);
650 break;
651
652 default:
653 fatal("Unknown/unsupported operating system.");
654 }
655#elif THE_ISA == X86_ISA
656 if (objFile->getArch() != ObjectFile::X86_64 &&
657 objFile->getArch() != ObjectFile::I386)
658 fatal("Object file architecture does not match compiled ISA (x86).");
659 switch (objFile->getOpSys()) {
660 case ObjectFile::UnknownOpSys:
661 warn("Unknown operating system; assuming Linux.");
662 // fall through
663 case ObjectFile::Linux:
664 if (objFile->getArch() == ObjectFile::X86_64) {
665 process = new X86_64LinuxProcess(params, objFile);
666 } else {
667 process = new I386LinuxProcess(params, objFile);
668 }
669 break;
670
671 default:
672 fatal("Unknown/unsupported operating system.");
673 }
674#elif THE_ISA == MIPS_ISA
675 if (objFile->getArch() != ObjectFile::Mips)
676 fatal("Object file architecture does not match compiled ISA (MIPS).");
677 switch (objFile->getOpSys()) {
678 case ObjectFile::UnknownOpSys:
679 warn("Unknown operating system; assuming Linux.");
680 // fall through
681 case ObjectFile::Linux:
682 process = new MipsLinuxProcess(params, objFile);
683 break;
684
685 default:
686 fatal("Unknown/unsupported operating system.");
687 }
688#elif THE_ISA == ARM_ISA
689 if (objFile->getArch() != ObjectFile::Arm &&
690 objFile->getArch() != ObjectFile::Thumb)
691 fatal("Object file architecture does not match compiled ISA (ARM).");
692 switch (objFile->getOpSys()) {
693 case ObjectFile::UnknownOpSys:
694 warn("Unknown operating system; assuming Linux.");
695 // fall through
696 case ObjectFile::Linux:
697 process = new ArmLinuxProcess(params, objFile, objFile->getArch());
698 break;
699 case ObjectFile::LinuxArmOABI:
700 fatal("M5 does not support ARM OABI binaries. Please recompile with an"
701 " EABI compiler.");
702 default:
703 fatal("Unknown/unsupported operating system.");
704 }
705#elif THE_ISA == POWER_ISA
706 if (objFile->getArch() != ObjectFile::Power)
707 fatal("Object file architecture does not match compiled ISA (Power).");
708 switch (objFile->getOpSys()) {
709 case ObjectFile::UnknownOpSys:
710 warn("Unknown operating system; assuming Linux.");
711 // fall through
712 case ObjectFile::Linux:
713 process = new PowerLinuxProcess(params, objFile);
714 break;
715
716 default:
717 fatal("Unknown/unsupported operating system.");
718 }
719#else
720#error "THE_ISA not set"
721#endif
722
723
724 if (process == NULL)
725 fatal("Unknown error creating process object.");
726 return process;
727}
728
729LiveProcess *
730LiveProcessParams::create()
731{
732 return LiveProcess::create(this);
733}
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/translating_port.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 class AuxVector<uint32_t>;
100template class 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(this);
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 Port *mem_port;
248 mem_port = system->physmem->getPort("functional");
249 initVirtMem = new TranslatingPort("process init port", this,
250 TranslatingPort::Always);
251 mem_port->setPeer(initVirtMem);
252 initVirtMem->setPeer(mem_port);
253}
254
255// map simulator fd sim_fd to target fd tgt_fd
256void
257Process::dup_fd(int sim_fd, int tgt_fd)
258{
259 if (tgt_fd < 0 || tgt_fd > MAX_FD)
260 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
261
262 Process::FdMap *fdo = &fd_map[tgt_fd];
263 fdo->fd = sim_fd;
264}
265
266
267// generate new target fd for sim_fd
268int
269Process::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe)
270{
271 // in case open() returns an error, don't allocate a new fd
272 if (sim_fd == -1)
273 return -1;
274
275 // find first free target fd
276 for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
277 Process::FdMap *fdo = &fd_map[free_fd];
278 if (fdo->fd == -1) {
279 fdo->fd = sim_fd;
280 fdo->filename = filename;
281 fdo->mode = mode;
282 fdo->fileOffset = 0;
283 fdo->flags = flags;
284 fdo->isPipe = pipe;
285 fdo->readPipeSource = 0;
286 return free_fd;
287 }
288 }
289
290 panic("Process::alloc_fd: out of file descriptors!");
291}
292
293
294// free target fd (e.g., after close)
295void
296Process::free_fd(int tgt_fd)
297{
298 Process::FdMap *fdo = &fd_map[tgt_fd];
299 if (fdo->fd == -1)
300 warn("Process::free_fd: request to free unused fd %d", tgt_fd);
301
302 fdo->fd = -1;
303 fdo->filename = "NULL";
304 fdo->mode = 0;
305 fdo->fileOffset = 0;
306 fdo->flags = 0;
307 fdo->isPipe = false;
308 fdo->readPipeSource = 0;
309}
310
311
312// look up simulator fd for given target fd
313int
314Process::sim_fd(int tgt_fd)
315{
316 if (tgt_fd < 0 || tgt_fd > MAX_FD)
317 return -1;
318
319 return fd_map[tgt_fd].fd;
320}
321
322Process::FdMap *
323Process::sim_fd_obj(int tgt_fd)
324{
325 if (tgt_fd < 0 || tgt_fd > MAX_FD)
326 return NULL;
327
328 return &fd_map[tgt_fd];
329}
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 warn("Not increasing stack: requested vaddr is outside of stack range.");
355 return false;
356}
357
358// find all offsets for currently open files and save them
359void
360Process::fix_file_offsets()
361{
362 Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO];
363 Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO];
364 Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO];
365 string in = fdo_stdin->filename;
366 string out = fdo_stdout->filename;
367 string err = fdo_stderr->filename;
368
369 // initialize file descriptors to default: same as simulator
370 int stdin_fd, stdout_fd, stderr_fd;
371
372 if (in == "stdin" || in == "cin")
373 stdin_fd = STDIN_FILENO;
374 else if (in == "None")
375 stdin_fd = -1;
376 else {
377 // open standard in and seek to the right location
378 stdin_fd = Process::openInputFile(in);
379 if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0)
380 panic("Unable to seek to correct location in file: %s", in);
381 }
382
383 if (out == "stdout" || out == "cout")
384 stdout_fd = STDOUT_FILENO;
385 else if (out == "stderr" || out == "cerr")
386 stdout_fd = STDERR_FILENO;
387 else if (out == "None")
388 stdout_fd = -1;
389 else {
390 stdout_fd = Process::openOutputFile(out);
391 if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0)
392 panic("Unable to seek to correct location in file: %s", out);
393 }
394
395 if (err == "stdout" || err == "cout")
396 stderr_fd = STDOUT_FILENO;
397 else if (err == "stderr" || err == "cerr")
398 stderr_fd = STDERR_FILENO;
399 else if (err == "None")
400 stderr_fd = -1;
401 else if (err == out)
402 stderr_fd = stdout_fd;
403 else {
404 stderr_fd = Process::openOutputFile(err);
405 if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0)
406 panic("Unable to seek to correct location in file: %s", err);
407 }
408
409 fdo_stdin->fd = stdin_fd;
410 fdo_stdout->fd = stdout_fd;
411 fdo_stderr->fd = stderr_fd;
412
413
414 for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) {
415 Process::FdMap *fdo = &fd_map[free_fd];
416 if (fdo->fd != -1) {
417 if (fdo->isPipe){
418 if (fdo->filename == "PIPE-WRITE")
419 continue;
420 else {
421 assert (fdo->filename == "PIPE-READ");
422 //create a new pipe
423 int fds[2];
424 int pipe_retval = pipe(fds);
425
426 if (pipe_retval < 0) {
427 // error
428 panic("Unable to create new pipe.");
429 }
430 fdo->fd = fds[0]; //set read pipe
431 Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource];
432 if (fdo_write->filename != "PIPE-WRITE")
433 panic ("Couldn't find write end of the pipe");
434
435 fdo_write->fd = fds[1];//set write pipe
436 }
437 } else {
438 //Open file
439 int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode);
440
441 if (fd == -1)
442 panic("Unable to open file: %s", fdo->filename);
443 fdo->fd = fd;
444
445 //Seek to correct location before checkpoint
446 if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0)
447 panic("Unable to seek to correct location in file: %s",
448 fdo->filename);
449 }
450 }
451 }
452}
453
454void
455Process::find_file_offsets()
456{
457 for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) {
458 Process::FdMap *fdo = &fd_map[free_fd];
459 if (fdo->fd != -1) {
460 fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR);
461 } else {
462 fdo->filename = "NULL";
463 fdo->fileOffset = 0;
464 }
465 }
466}
467
468void
469Process::setReadPipeSource(int read_pipe_fd, int source_fd)
470{
471 Process::FdMap *fdo = &fd_map[read_pipe_fd];
472 fdo->readPipeSource = source_fd;
473}
474
475void
476Process::FdMap::serialize(std::ostream &os)
477{
478 SERIALIZE_SCALAR(fd);
479 SERIALIZE_SCALAR(isPipe);
480 SERIALIZE_SCALAR(filename);
481 SERIALIZE_SCALAR(flags);
482 SERIALIZE_SCALAR(readPipeSource);
483 SERIALIZE_SCALAR(fileOffset);
484}
485
486void
487Process::FdMap::unserialize(Checkpoint *cp, const std::string §ion)
488{
489 UNSERIALIZE_SCALAR(fd);
490 UNSERIALIZE_SCALAR(isPipe);
491 UNSERIALIZE_SCALAR(filename);
492 UNSERIALIZE_SCALAR(flags);
493 UNSERIALIZE_SCALAR(readPipeSource);
494 UNSERIALIZE_SCALAR(fileOffset);
495}
496
497void
498Process::serialize(std::ostream &os)
499{
500 SERIALIZE_SCALAR(brk_point);
501 SERIALIZE_SCALAR(stack_base);
502 SERIALIZE_SCALAR(stack_size);
503 SERIALIZE_SCALAR(stack_min);
504 SERIALIZE_SCALAR(next_thread_stack_base);
505 SERIALIZE_SCALAR(mmap_start);
506 SERIALIZE_SCALAR(mmap_end);
507 SERIALIZE_SCALAR(nxm_start);
508 SERIALIZE_SCALAR(nxm_end);
509 find_file_offsets();
510 pTable->serialize(os);
511 for (int x = 0; x <= MAX_FD; x++) {
512 nameOut(os, csprintf("%s.FdMap%d", name(), x));
513 fd_map[x].serialize(os);
514 }
515 SERIALIZE_SCALAR(M5_pid);
516
517}
518
519void
520Process::unserialize(Checkpoint *cp, const std::string §ion)
521{
522 UNSERIALIZE_SCALAR(brk_point);
523 UNSERIALIZE_SCALAR(stack_base);
524 UNSERIALIZE_SCALAR(stack_size);
525 UNSERIALIZE_SCALAR(stack_min);
526 UNSERIALIZE_SCALAR(next_thread_stack_base);
527 UNSERIALIZE_SCALAR(mmap_start);
528 UNSERIALIZE_SCALAR(mmap_end);
529 UNSERIALIZE_SCALAR(nxm_start);
530 UNSERIALIZE_SCALAR(nxm_end);
531 pTable->unserialize(cp, section);
532 for (int x = 0; x <= MAX_FD; x++) {
533 fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x));
534 }
535 fix_file_offsets();
536 UNSERIALIZE_OPT_SCALAR(M5_pid);
537 // The above returns a bool so that you could do something if you don't
538 // find the param in the checkpoint if you wanted to, like set a default
539 // but in this case we'll just stick with the instantianted value if not
540 // found.
541}
542
543
544////////////////////////////////////////////////////////////////////////
545//
546// LiveProcess member definitions
547//
548////////////////////////////////////////////////////////////////////////
549
550
551LiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile)
552 : Process(params), objFile(_objFile),
553 argv(params->cmd), envp(params->env), cwd(params->cwd)
554{
555 __uid = params->uid;
556 __euid = params->euid;
557 __gid = params->gid;
558 __egid = params->egid;
559 __pid = params->pid;
560 __ppid = params->ppid;
561
562 prog_fname = params->cmd[0];
563
564 // load up symbols, if any... these may be used for debugging or
565 // profiling.
566 if (!debugSymbolTable) {
567 debugSymbolTable = new SymbolTable();
568 if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
569 !objFile->loadLocalSymbols(debugSymbolTable)) {
570 // didn't load any symbols
571 delete debugSymbolTable;
572 debugSymbolTable = NULL;
573 }
574 }
575}
576
577void
578LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
579{
580 num_syscalls++;
581
582 SyscallDesc *desc = getDesc(callnum);
583 if (desc == NULL)
584 fatal("Syscall %d out of range", callnum);
585
586 desc->doSyscall(callnum, this, tc);
587}
588
589IntReg
590LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width)
591{
592 return getSyscallArg(tc, i);
593}
594
595LiveProcess *
596LiveProcess::create(LiveProcessParams * params)
597{
598 LiveProcess *process = NULL;
599
600 string executable =
601 params->executable == "" ? params->cmd[0] : params->executable;
602 ObjectFile *objFile = createObjectFile(executable);
603 if (objFile == NULL) {
604 fatal("Can't load object file %s", executable);
605 }
606
607 if (objFile->isDynamic())
608 fatal("Object file is a dynamic executable however only static "
609 "executables are supported!\n Please recompile your "
610 "executable as a static binary and try again.\n");
611
612#if THE_ISA == ALPHA_ISA
613 if (objFile->getArch() != ObjectFile::Alpha)
614 fatal("Object file architecture does not match compiled ISA (Alpha).");
615
616 switch (objFile->getOpSys()) {
617 case ObjectFile::Tru64:
618 process = new AlphaTru64Process(params, objFile);
619 break;
620
621 case ObjectFile::UnknownOpSys:
622 warn("Unknown operating system; assuming Linux.");
623 // fall through
624 case ObjectFile::Linux:
625 process = new AlphaLinuxProcess(params, objFile);
626 break;
627
628 default:
629 fatal("Unknown/unsupported operating system.");
630 }
631#elif THE_ISA == SPARC_ISA
632 if (objFile->getArch() != ObjectFile::SPARC64 &&
633 objFile->getArch() != ObjectFile::SPARC32)
634 fatal("Object file architecture does not match compiled ISA (SPARC).");
635 switch (objFile->getOpSys()) {
636 case ObjectFile::UnknownOpSys:
637 warn("Unknown operating system; assuming Linux.");
638 // fall through
639 case ObjectFile::Linux:
640 if (objFile->getArch() == ObjectFile::SPARC64) {
641 process = new Sparc64LinuxProcess(params, objFile);
642 } else {
643 process = new Sparc32LinuxProcess(params, objFile);
644 }
645 break;
646
647
648 case ObjectFile::Solaris:
649 process = new SparcSolarisProcess(params, objFile);
650 break;
651
652 default:
653 fatal("Unknown/unsupported operating system.");
654 }
655#elif THE_ISA == X86_ISA
656 if (objFile->getArch() != ObjectFile::X86_64 &&
657 objFile->getArch() != ObjectFile::I386)
658 fatal("Object file architecture does not match compiled ISA (x86).");
659 switch (objFile->getOpSys()) {
660 case ObjectFile::UnknownOpSys:
661 warn("Unknown operating system; assuming Linux.");
662 // fall through
663 case ObjectFile::Linux:
664 if (objFile->getArch() == ObjectFile::X86_64) {
665 process = new X86_64LinuxProcess(params, objFile);
666 } else {
667 process = new I386LinuxProcess(params, objFile);
668 }
669 break;
670
671 default:
672 fatal("Unknown/unsupported operating system.");
673 }
674#elif THE_ISA == MIPS_ISA
675 if (objFile->getArch() != ObjectFile::Mips)
676 fatal("Object file architecture does not match compiled ISA (MIPS).");
677 switch (objFile->getOpSys()) {
678 case ObjectFile::UnknownOpSys:
679 warn("Unknown operating system; assuming Linux.");
680 // fall through
681 case ObjectFile::Linux:
682 process = new MipsLinuxProcess(params, objFile);
683 break;
684
685 default:
686 fatal("Unknown/unsupported operating system.");
687 }
688#elif THE_ISA == ARM_ISA
689 if (objFile->getArch() != ObjectFile::Arm &&
690 objFile->getArch() != ObjectFile::Thumb)
691 fatal("Object file architecture does not match compiled ISA (ARM).");
692 switch (objFile->getOpSys()) {
693 case ObjectFile::UnknownOpSys:
694 warn("Unknown operating system; assuming Linux.");
695 // fall through
696 case ObjectFile::Linux:
697 process = new ArmLinuxProcess(params, objFile, objFile->getArch());
698 break;
699 case ObjectFile::LinuxArmOABI:
700 fatal("M5 does not support ARM OABI binaries. Please recompile with an"
701 " EABI compiler.");
702 default:
703 fatal("Unknown/unsupported operating system.");
704 }
705#elif THE_ISA == POWER_ISA
706 if (objFile->getArch() != ObjectFile::Power)
707 fatal("Object file architecture does not match compiled ISA (Power).");
708 switch (objFile->getOpSys()) {
709 case ObjectFile::UnknownOpSys:
710 warn("Unknown operating system; assuming Linux.");
711 // fall through
712 case ObjectFile::Linux:
713 process = new PowerLinuxProcess(params, objFile);
714 break;
715
716 default:
717 fatal("Unknown/unsupported operating system.");
718 }
719#else
720#error "THE_ISA not set"
721#endif
722
723
724 if (process == NULL)
725 fatal("Unknown error creating process object.");
726 return process;
727}
728
729LiveProcess *
730LiveProcessParams::create()
731{
732 return LiveProcess::create(this);
733}