1/*
2 * Copyright (c) 2003-2005 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: Steve Reinhardt
29 * Kevin Lim
30 */
31
32#ifndef __SIM_SYSCALL_EMUL_HH__
33#define __SIM_SYSCALL_EMUL_HH__
34
35#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
36 defined(__FreeBSD__) || defined(__CYGWIN__))
37
38///
39/// @file syscall_emul.hh
40///
41/// This file defines objects used to emulate syscalls from the target
42/// application on the host machine.
43
44#ifdef __CYGWIN32__
45#include <sys/fcntl.h> // for O_BINARY
46#endif
47#include <sys/stat.h>
48#include <sys/time.h>
49#include <sys/uio.h>
50#include <fcntl.h>
51
52#include <cerrno>
53#include <string>
54
55#include "base/chunk_generator.hh"
56#include "base/intmath.hh" // for RoundUp
57#include "base/misc.hh"
58#include "base/trace.hh"
59#include "base/types.hh"
60#include "config/the_isa.hh"
61#include "cpu/base.hh"
62#include "cpu/thread_context.hh"
63#include "debug/SyscallVerbose.hh"
64#include "mem/page_table.hh"
65#include "mem/se_translating_port_proxy.hh"
65#include "mem/translating_port.hh"
66#include "sim/byteswap.hh"
67#include "sim/process.hh"
68#include "sim/syscallreturn.hh"
69#include "sim/system.hh"
70
71///
72/// System call descriptor.
73///
74class SyscallDesc {
75
76 public:
77
78 /// Typedef for target syscall handler functions.
79 typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num,
80 LiveProcess *, ThreadContext *);
81
82 const char *name; //!< Syscall name (e.g., "open").
83 FuncPtr funcPtr; //!< Pointer to emulation function.
84 int flags; //!< Flags (see Flags enum).
85
86 /// Flag values for controlling syscall behavior.
87 enum Flags {
88 /// Don't set return regs according to funcPtr return value.
89 /// Used for syscalls with non-standard return conventions
90 /// that explicitly set the ThreadContext regs (e.g.,
91 /// sigreturn).
92 SuppressReturnValue = 1
93 };
94
95 /// Constructor.
96 SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0)
97 : name(_name), funcPtr(_funcPtr), flags(_flags)
98 {
99 }
100
101 /// Emulate the syscall. Public interface for calling through funcPtr.
102 void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc);
103};
104
105
106class BaseBufferArg {
107
108 public:
109
110 BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size)
111 {
112 bufPtr = new uint8_t[size];
113 // clear out buffer: in case we only partially populate this,
114 // and then do a copyOut(), we want to make sure we don't
115 // introduce any random junk into the simulated address space
116 memset(bufPtr, 0, size);
117 }
118
119 virtual ~BaseBufferArg() { delete [] bufPtr; }
120
121 //
122 // copy data into simulator space (read from target memory)
123 //
123 virtual bool copyIn(SETranslatingPortProxy* memproxy)
124 virtual bool copyIn(TranslatingPort *memport)
125 {
125 memproxy->readBlob(addr, bufPtr, size);
126 memport->readBlob(addr, bufPtr, size);
127 return true; // no EFAULT detection for now
128 }
129
130 //
131 // copy data out of simulator space (write to target memory)
132 //
132 virtual bool copyOut(SETranslatingPortProxy* memproxy)
133 virtual bool copyOut(TranslatingPort *memport)
134 {
134 memproxy->writeBlob(addr, bufPtr, size);
135 memport->writeBlob(addr, bufPtr, size);
136 return true; // no EFAULT detection for now
137 }
138
139 protected:
140 Addr addr;
141 int size;
142 uint8_t *bufPtr;
143};
144
145
146class BufferArg : public BaseBufferArg
147{
148 public:
149 BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { }
150 void *bufferPtr() { return bufPtr; }
151};
152
153template <class T>
154class TypedBufferArg : public BaseBufferArg
155{
156 public:
157 // user can optionally specify a specific number of bytes to
158 // allocate to deal with those structs that have variable-size
159 // arrays at the end
160 TypedBufferArg(Addr _addr, int _size = sizeof(T))
161 : BaseBufferArg(_addr, _size)
162 { }
163
164 // type case
165 operator T*() { return (T *)bufPtr; }
166
167 // dereference operators
168 T &operator*() { return *((T *)bufPtr); }
169 T* operator->() { return (T *)bufPtr; }
170 T &operator[](int i) { return ((T *)bufPtr)[i]; }
171};
172
173//////////////////////////////////////////////////////////////////////
174//
175// The following emulation functions are generic enough that they
176// don't need to be recompiled for different emulated OS's. They are
177// defined in sim/syscall_emul.cc.
178//
179//////////////////////////////////////////////////////////////////////
180
181
182/// Handler for unimplemented syscalls that we haven't thought about.
183SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
184 LiveProcess *p, ThreadContext *tc);
185
186/// Handler for unimplemented syscalls that we never intend to
187/// implement (signal handling, etc.) and should not affect the correct
188/// behavior of the program. Print a warning only if the appropriate
189/// trace flag is enabled. Return success to the target program.
190SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
191 LiveProcess *p, ThreadContext *tc);
192SyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num,
193 LiveProcess *p, ThreadContext *tc);
194
195/// Target exit() handler: terminate current context.
196SyscallReturn exitFunc(SyscallDesc *desc, int num,
197 LiveProcess *p, ThreadContext *tc);
198
199/// Target exit_group() handler: terminate simulation. (exit all threads)
200SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
201 LiveProcess *p, ThreadContext *tc);
202
203/// Target getpagesize() handler.
204SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
205 LiveProcess *p, ThreadContext *tc);
206
207/// Target brk() handler: set brk address.
208SyscallReturn brkFunc(SyscallDesc *desc, int num,
209 LiveProcess *p, ThreadContext *tc);
210
211/// Target close() handler.
212SyscallReturn closeFunc(SyscallDesc *desc, int num,
213 LiveProcess *p, ThreadContext *tc);
214
215/// Target read() handler.
216SyscallReturn readFunc(SyscallDesc *desc, int num,
217 LiveProcess *p, ThreadContext *tc);
218
219/// Target write() handler.
220SyscallReturn writeFunc(SyscallDesc *desc, int num,
221 LiveProcess *p, ThreadContext *tc);
222
223/// Target lseek() handler.
224SyscallReturn lseekFunc(SyscallDesc *desc, int num,
225 LiveProcess *p, ThreadContext *tc);
226
227/// Target _llseek() handler.
228SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
229 LiveProcess *p, ThreadContext *tc);
230
231/// Target munmap() handler.
232SyscallReturn munmapFunc(SyscallDesc *desc, int num,
233 LiveProcess *p, ThreadContext *tc);
234
235/// Target gethostname() handler.
236SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
237 LiveProcess *p, ThreadContext *tc);
238
239/// Target getcwd() handler.
240SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
241 LiveProcess *p, ThreadContext *tc);
242
243/// Target unlink() handler.
244SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
245 LiveProcess *p, ThreadContext *tc);
246
247/// Target unlink() handler.
248SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
249 LiveProcess *p, ThreadContext *tc);
250
251/// Target mkdir() handler.
252SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
253 LiveProcess *p, ThreadContext *tc);
254
255/// Target rename() handler.
256SyscallReturn renameFunc(SyscallDesc *desc, int num,
257 LiveProcess *p, ThreadContext *tc);
258
259
260/// Target truncate() handler.
261SyscallReturn truncateFunc(SyscallDesc *desc, int num,
262 LiveProcess *p, ThreadContext *tc);
263
264
265/// Target ftruncate() handler.
266SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
267 LiveProcess *p, ThreadContext *tc);
268
269
270/// Target truncate64() handler.
271SyscallReturn truncate64Func(SyscallDesc *desc, int num,
272 LiveProcess *p, ThreadContext *tc);
273
274/// Target ftruncate64() handler.
275SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
276 LiveProcess *p, ThreadContext *tc);
277
278
279/// Target umask() handler.
280SyscallReturn umaskFunc(SyscallDesc *desc, int num,
281 LiveProcess *p, ThreadContext *tc);
282
283
284/// Target chown() handler.
285SyscallReturn chownFunc(SyscallDesc *desc, int num,
286 LiveProcess *p, ThreadContext *tc);
287
288
289/// Target fchown() handler.
290SyscallReturn fchownFunc(SyscallDesc *desc, int num,
291 LiveProcess *p, ThreadContext *tc);
292
293/// Target dup() handler.
294SyscallReturn dupFunc(SyscallDesc *desc, int num,
295 LiveProcess *process, ThreadContext *tc);
296
297/// Target fnctl() handler.
298SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
299 LiveProcess *process, ThreadContext *tc);
300
301/// Target fcntl64() handler.
302SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
303 LiveProcess *process, ThreadContext *tc);
304
305/// Target setuid() handler.
306SyscallReturn setuidFunc(SyscallDesc *desc, int num,
307 LiveProcess *p, ThreadContext *tc);
308
309/// Target getpid() handler.
310SyscallReturn getpidFunc(SyscallDesc *desc, int num,
311 LiveProcess *p, ThreadContext *tc);
312
313/// Target getuid() handler.
314SyscallReturn getuidFunc(SyscallDesc *desc, int num,
315 LiveProcess *p, ThreadContext *tc);
316
317/// Target getgid() handler.
318SyscallReturn getgidFunc(SyscallDesc *desc, int num,
319 LiveProcess *p, ThreadContext *tc);
320
321/// Target getppid() handler.
322SyscallReturn getppidFunc(SyscallDesc *desc, int num,
323 LiveProcess *p, ThreadContext *tc);
324
325/// Target geteuid() handler.
326SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
327 LiveProcess *p, ThreadContext *tc);
328
329/// Target getegid() handler.
330SyscallReturn getegidFunc(SyscallDesc *desc, int num,
331 LiveProcess *p, ThreadContext *tc);
332
333/// Target clone() handler.
334SyscallReturn cloneFunc(SyscallDesc *desc, int num,
335 LiveProcess *p, ThreadContext *tc);
336
337
338/// Pseudo Funcs - These functions use a different return convension,
339/// returning a second value in a register other than the normal return register
340SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
341 LiveProcess *process, ThreadContext *tc);
342
343/// Target getpidPseudo() handler.
344SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
345 LiveProcess *p, ThreadContext *tc);
346
347/// Target getuidPseudo() handler.
348SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
349 LiveProcess *p, ThreadContext *tc);
350
351/// Target getgidPseudo() handler.
352SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
353 LiveProcess *p, ThreadContext *tc);
354
355
356/// A readable name for 1,000,000, for converting microseconds to seconds.
357const int one_million = 1000000;
358
359/// Approximate seconds since the epoch (1/1/1970). About a billion,
360/// by my reckoning. We want to keep this a constant (not use the
361/// real-world time) to keep simulations repeatable.
362const unsigned seconds_since_epoch = 1000000000;
363
364/// Helper function to convert current elapsed time to seconds and
365/// microseconds.
366template <class T1, class T2>
367void
368getElapsedTime(T1 &sec, T2 &usec)
369{
370 int elapsed_usecs = curTick() / SimClock::Int::us;
371 sec = elapsed_usecs / one_million;
372 usec = elapsed_usecs % one_million;
373}
374
375//////////////////////////////////////////////////////////////////////
376//
377// The following emulation functions are generic, but need to be
378// templated to account for differences in types, constants, etc.
379//
380//////////////////////////////////////////////////////////////////////
381
382#if NO_STAT64
383 typedef struct stat hst_stat;
384 typedef struct stat hst_stat64;
385#else
386 typedef struct stat hst_stat;
387 typedef struct stat64 hst_stat64;
388#endif
389
390//// Helper function to convert a host stat buffer to a target stat
391//// buffer. Also copies the target buffer out to the simulated
392//// memory space. Used by stat(), fstat(), and lstat().
393
394template <typename target_stat, typename host_stat>
395static void
396convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
397{
398 using namespace TheISA;
399
400 if (fakeTTY)
401 tgt->st_dev = 0xA;
402 else
403 tgt->st_dev = host->st_dev;
403 tgt->st_dev = TheISA::htog(tgt->st_dev);
404 tgt->st_dev = htog(tgt->st_dev);
405 tgt->st_ino = host->st_ino;
405 tgt->st_ino = TheISA::htog(tgt->st_ino);
406 tgt->st_ino = htog(tgt->st_ino);
407 tgt->st_mode = host->st_mode;
408 if (fakeTTY) {
409 // Claim to be a character device
410 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
411 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
412 }
412 tgt->st_mode = TheISA::htog(tgt->st_mode);
413 tgt->st_mode = htog(tgt->st_mode);
414 tgt->st_nlink = host->st_nlink;
414 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
415 tgt->st_nlink = htog(tgt->st_nlink);
416 tgt->st_uid = host->st_uid;
416 tgt->st_uid = TheISA::htog(tgt->st_uid);
417 tgt->st_uid = htog(tgt->st_uid);
418 tgt->st_gid = host->st_gid;
418 tgt->st_gid = TheISA::htog(tgt->st_gid);
419 tgt->st_gid = htog(tgt->st_gid);
420 if (fakeTTY)
421 tgt->st_rdev = 0x880d;
422 else
423 tgt->st_rdev = host->st_rdev;
423 tgt->st_rdev = TheISA::htog(tgt->st_rdev);
424 tgt->st_rdev = htog(tgt->st_rdev);
425 tgt->st_size = host->st_size;
425 tgt->st_size = TheISA::htog(tgt->st_size);
426 tgt->st_size = htog(tgt->st_size);
427 tgt->st_atimeX = host->st_atime;
427 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
428 tgt->st_atimeX = htog(tgt->st_atimeX);
429 tgt->st_mtimeX = host->st_mtime;
429 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
430 tgt->st_mtimeX = htog(tgt->st_mtimeX);
431 tgt->st_ctimeX = host->st_ctime;
431 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
432 tgt->st_ctimeX = htog(tgt->st_ctimeX);
433 // Force the block size to be 8k. This helps to ensure buffered io works
434 // consistently across different hosts.
435 tgt->st_blksize = 0x2000;
435 tgt->st_blksize = TheISA::htog(tgt->st_blksize);
436 tgt->st_blksize = htog(tgt->st_blksize);
437 tgt->st_blocks = host->st_blocks;
437 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
438 tgt->st_blocks = htog(tgt->st_blocks);
439}
440
441// Same for stat64
442
443template <typename target_stat, typename host_stat64>
444static void
445convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
446{
447 using namespace TheISA;
448
449 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
450#if defined(STAT_HAVE_NSEC)
451 tgt->st_atime_nsec = host->st_atime_nsec;
451 tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
452 tgt->st_atime_nsec = htog(tgt->st_atime_nsec);
453 tgt->st_mtime_nsec = host->st_mtime_nsec;
453 tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
454 tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec);
455 tgt->st_ctime_nsec = host->st_ctime_nsec;
455 tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
456 tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec);
457#else
458 tgt->st_atime_nsec = 0;
459 tgt->st_mtime_nsec = 0;
460 tgt->st_ctime_nsec = 0;
461#endif
462}
463
464//Here are a couple convenience functions
465template<class OS>
466static void
466copyOutStatBuf(SETranslatingPortProxy* mem, Addr addr,
467copyOutStatBuf(TranslatingPort * mem, Addr addr,
468 hst_stat *host, bool fakeTTY = false)
469{
470 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
471 tgt_stat_buf tgt(addr);
472 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
473 tgt.copyOut(mem);
474}
475
476template<class OS>
477static void
477copyOutStat64Buf(SETranslatingPortProxy* mem, Addr addr,
478copyOutStat64Buf(TranslatingPort * mem, Addr addr,
479 hst_stat64 *host, bool fakeTTY = false)
480{
481 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
482 tgt_stat_buf tgt(addr);
483 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
484 tgt.copyOut(mem);
485}
486
487/// Target ioctl() handler. For the most part, programs call ioctl()
488/// only to find out if their stdout is a tty, to determine whether to
489/// do line or block buffering.
490template <class OS>
491SyscallReturn
492ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
493 ThreadContext *tc)
494{
495 int index = 0;
496 int fd = process->getSyscallArg(tc, index);
497 unsigned req = process->getSyscallArg(tc, index);
498
499 DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req);
500
501 if (fd < 0 || process->sim_fd(fd) < 0) {
502 // doesn't map to any simulator fd: not a valid target fd
503 return -EBADF;
504 }
505
506 switch (req) {
507 case OS::TIOCISATTY_:
508 case OS::TIOCGETP_:
509 case OS::TIOCSETP_:
510 case OS::TIOCSETN_:
511 case OS::TIOCSETC_:
512 case OS::TIOCGETC_:
513 case OS::TIOCGETS_:
514 case OS::TIOCGETA_:
515 case OS::TCSETAW_:
516 return -ENOTTY;
517
518 default:
519 fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
520 fd, req, tc->pcState());
521 }
522}
523
524/// Target open() handler.
525template <class OS>
526SyscallReturn
527openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
528 ThreadContext *tc)
529{
530 std::string path;
531
532 int index = 0;
532 if (!tc->getMemProxy()->tryReadString(path,
533 if (!tc->getMemPort()->tryReadString(path,
534 process->getSyscallArg(tc, index)))
535 return -EFAULT;
536
537 if (path == "/dev/sysdev0") {
538 // This is a memory-mapped high-resolution timer device on Alpha.
539 // We don't support it, so just punt.
540 warn("Ignoring open(%s, ...)\n", path);
541 return -ENOENT;
542 }
543
544 int tgtFlags = process->getSyscallArg(tc, index);
545 int mode = process->getSyscallArg(tc, index);
546 int hostFlags = 0;
547
548 // translate open flags
549 for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
550 if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
551 tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
552 hostFlags |= OS::openFlagTable[i].hostFlag;
553 }
554 }
555
556 // any target flags left?
557 if (tgtFlags != 0)
558 warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
559
560#ifdef __CYGWIN32__
561 hostFlags |= O_BINARY;
562#endif
563
564 // Adjust path for current working directory
565 path = process->fullPath(path);
566
567 DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
568
569 int fd;
570 if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") ||
571 !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) {
572 // It's a proc/sys entery and requires special handling
573 fd = OS::openSpecialFile(path, process, tc);
574 return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
575 } else {
576 // open the file
577 fd = open(path.c_str(), hostFlags, mode);
578 return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
579 }
580
581}
582
583/// Target sysinfo() handler.
584template <class OS>
585SyscallReturn
586sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
587 ThreadContext *tc)
588{
589
590 int index = 0;
591 TypedBufferArg<typename OS::tgt_sysinfo>
592 sysinfo(process->getSyscallArg(tc, index));
593
594 sysinfo->uptime=seconds_since_epoch;
595 sysinfo->totalram=process->system->memSize();
596
596 sysinfo.copyOut(tc->getMemProxy());
597 sysinfo.copyOut(tc->getMemPort());
598
599 return 0;
600}
601
602/// Target chmod() handler.
603template <class OS>
604SyscallReturn
605chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
606 ThreadContext *tc)
607{
608 std::string path;
609
610 int index = 0;
610 if (!tc->getMemProxy()->tryReadString(path,
611 if (!tc->getMemPort()->tryReadString(path,
612 process->getSyscallArg(tc, index))) {
613 return -EFAULT;
614 }
615
616 uint32_t mode = process->getSyscallArg(tc, index);
617 mode_t hostMode = 0;
618
619 // XXX translate mode flags via OS::something???
620 hostMode = mode;
621
622 // Adjust path for current working directory
623 path = process->fullPath(path);
624
625 // do the chmod
626 int result = chmod(path.c_str(), hostMode);
627 if (result < 0)
628 return -errno;
629
630 return 0;
631}
632
633
634/// Target fchmod() handler.
635template <class OS>
636SyscallReturn
637fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
638 ThreadContext *tc)
639{
640 int index = 0;
641 int fd = process->getSyscallArg(tc, index);
642 if (fd < 0 || process->sim_fd(fd) < 0) {
643 // doesn't map to any simulator fd: not a valid target fd
644 return -EBADF;
645 }
646
647 uint32_t mode = process->getSyscallArg(tc, index);
648 mode_t hostMode = 0;
649
650 // XXX translate mode flags via OS::someting???
651 hostMode = mode;
652
653 // do the fchmod
654 int result = fchmod(process->sim_fd(fd), hostMode);
655 if (result < 0)
656 return -errno;
657
658 return 0;
659}
660
661/// Target mremap() handler.
662template <class OS>
663SyscallReturn
664mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
665{
666 int index = 0;
667 Addr start = process->getSyscallArg(tc, index);
668 uint64_t old_length = process->getSyscallArg(tc, index);
669 uint64_t new_length = process->getSyscallArg(tc, index);
670 uint64_t flags = process->getSyscallArg(tc, index);
671
672 if ((start % TheISA::VMPageSize != 0) ||
673 (new_length % TheISA::VMPageSize != 0)) {
674 warn("mremap failing: arguments not page aligned");
675 return -EINVAL;
676 }
677
678 if (new_length > old_length) {
679 if ((start + old_length) == process->mmap_end) {
680 uint64_t diff = new_length - old_length;
680 process->allocateMem(process->mmap_end, diff);
681 process->pTable->allocate(process->mmap_end, diff);
682 process->mmap_end += diff;
683 return start;
684 } else {
685 // sys/mman.h defined MREMAP_MAYMOVE
686 if (!(flags & 1)) {
687 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
688 return -ENOMEM;
689 } else {
690 process->pTable->remap(start, old_length, process->mmap_end);
691 warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
692 process->mmap_end, process->mmap_end + new_length, new_length);
693 start = process->mmap_end;
694 // add on the remaining unallocated pages
694 process->allocateMem(start + old_length,
695 new_length - old_length);
695 process->pTable->allocate(start + old_length, new_length - old_length);
696 process->mmap_end += new_length;
697 warn("returning %08p as start\n", start);
698 return start;
699 }
700 }
701 } else {
702 process->pTable->unmap(start + new_length, old_length - new_length);
702 process->pTable->deallocate(start + new_length, old_length -
703 new_length);
704 return start;
705 }
706}
707
708/// Target stat() handler.
709template <class OS>
710SyscallReturn
711statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
712 ThreadContext *tc)
713{
714 std::string path;
715
716 int index = 0;
716 if (!tc->getMemProxy()->tryReadString(path,
717 if (!tc->getMemPort()->tryReadString(path,
718 process->getSyscallArg(tc, index))) {
719 return -EFAULT;
720 }
721 Addr bufPtr = process->getSyscallArg(tc, index);
722
723 // Adjust path for current working directory
724 path = process->fullPath(path);
725
726 struct stat hostBuf;
727 int result = stat(path.c_str(), &hostBuf);
728
729 if (result < 0)
730 return -errno;
731
731 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
732 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
733
734 return 0;
735}
736
737
738/// Target stat64() handler.
739template <class OS>
740SyscallReturn
741stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
742 ThreadContext *tc)
743{
744 std::string path;
745
746 int index = 0;
746 if (!tc->getMemProxy()->tryReadString(path,
747 if (!tc->getMemPort()->tryReadString(path,
748 process->getSyscallArg(tc, index)))
749 return -EFAULT;
750 Addr bufPtr = process->getSyscallArg(tc, index);
751
752 // Adjust path for current working directory
753 path = process->fullPath(path);
754
755#if NO_STAT64
756 struct stat hostBuf;
757 int result = stat(path.c_str(), &hostBuf);
758#else
759 struct stat64 hostBuf;
760 int result = stat64(path.c_str(), &hostBuf);
761#endif
762
763 if (result < 0)
764 return -errno;
765
765 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
766 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
767
768 return 0;
769}
770
771
772/// Target fstat64() handler.
773template <class OS>
774SyscallReturn
775fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
776 ThreadContext *tc)
777{
778 int index = 0;
779 int fd = process->getSyscallArg(tc, index);
780 Addr bufPtr = process->getSyscallArg(tc, index);
781 if (fd < 0 || process->sim_fd(fd) < 0) {
782 // doesn't map to any simulator fd: not a valid target fd
783 return -EBADF;
784 }
785
786#if NO_STAT64
787 struct stat hostBuf;
788 int result = fstat(process->sim_fd(fd), &hostBuf);
789#else
790 struct stat64 hostBuf;
791 int result = fstat64(process->sim_fd(fd), &hostBuf);
792#endif
793
794 if (result < 0)
795 return -errno;
796
796 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
797 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
798
799 return 0;
800}
801
802
803/// Target lstat() handler.
804template <class OS>
805SyscallReturn
806lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
807 ThreadContext *tc)
808{
809 std::string path;
810
811 int index = 0;
811 if (!tc->getMemProxy()->tryReadString(path,
812 if (!tc->getMemPort()->tryReadString(path,
813 process->getSyscallArg(tc, index))) {
814 return -EFAULT;
815 }
816 Addr bufPtr = process->getSyscallArg(tc, index);
817
818 // Adjust path for current working directory
819 path = process->fullPath(path);
820
821 struct stat hostBuf;
822 int result = lstat(path.c_str(), &hostBuf);
823
824 if (result < 0)
825 return -errno;
826
826 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
827 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
828
829 return 0;
830}
831
832/// Target lstat64() handler.
833template <class OS>
834SyscallReturn
835lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
836 ThreadContext *tc)
837{
838 std::string path;
839
840 int index = 0;
840 if (!tc->getMemProxy()->tryReadString(path,
841 if (!tc->getMemPort()->tryReadString(path,
842 process->getSyscallArg(tc, index))) {
843 return -EFAULT;
844 }
845 Addr bufPtr = process->getSyscallArg(tc, index);
846
847 // Adjust path for current working directory
848 path = process->fullPath(path);
849
850#if NO_STAT64
851 struct stat hostBuf;
852 int result = lstat(path.c_str(), &hostBuf);
853#else
854 struct stat64 hostBuf;
855 int result = lstat64(path.c_str(), &hostBuf);
856#endif
857
858 if (result < 0)
859 return -errno;
860
860 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
861 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
862
863 return 0;
864}
865
866/// Target fstat() handler.
867template <class OS>
868SyscallReturn
869fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
870 ThreadContext *tc)
871{
872 int index = 0;
873 int fd = process->sim_fd(process->getSyscallArg(tc, index));
874 Addr bufPtr = process->getSyscallArg(tc, index);
875
876 DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
877
878 if (fd < 0)
879 return -EBADF;
880
881 struct stat hostBuf;
882 int result = fstat(fd, &hostBuf);
883
884 if (result < 0)
885 return -errno;
886
886 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
887 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
888
889 return 0;
890}
891
892
893/// Target statfs() handler.
894template <class OS>
895SyscallReturn
896statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
897 ThreadContext *tc)
898{
899 std::string path;
900
901 int index = 0;
901 if (!tc->getMemProxy()->tryReadString(path,
902 if (!tc->getMemPort()->tryReadString(path,
903 process->getSyscallArg(tc, index))) {
904 return -EFAULT;
905 }
906 Addr bufPtr = process->getSyscallArg(tc, index);
907
908 // Adjust path for current working directory
909 path = process->fullPath(path);
910
911 struct statfs hostBuf;
912 int result = statfs(path.c_str(), &hostBuf);
913
914 if (result < 0)
915 return -errno;
916
916 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
917 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
918
919 return 0;
920}
921
922
923/// Target fstatfs() handler.
924template <class OS>
925SyscallReturn
926fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
927 ThreadContext *tc)
928{
929 int index = 0;
930 int fd = process->sim_fd(process->getSyscallArg(tc, index));
931 Addr bufPtr = process->getSyscallArg(tc, index);
932
933 if (fd < 0)
934 return -EBADF;
935
936 struct statfs hostBuf;
937 int result = fstatfs(fd, &hostBuf);
938
939 if (result < 0)
940 return -errno;
941
941 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
942 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
943
944 return 0;
945}
946
947
948/// Target writev() handler.
949template <class OS>
950SyscallReturn
951writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
952 ThreadContext *tc)
953{
954 int index = 0;
955 int fd = process->getSyscallArg(tc, index);
956 if (fd < 0 || process->sim_fd(fd) < 0) {
957 // doesn't map to any simulator fd: not a valid target fd
958 return -EBADF;
959 }
960
960 SETranslatingPortProxy *p = tc->getMemProxy();
961 TranslatingPort *p = tc->getMemPort();
962 uint64_t tiov_base = process->getSyscallArg(tc, index);
963 size_t count = process->getSyscallArg(tc, index);
964 struct iovec hiov[count];
965 for (size_t i = 0; i < count; ++i) {
966 typename OS::tgt_iovec tiov;
967
968 p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
969 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
969 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
970 hiov[i].iov_len = gtoh(tiov.iov_len);
971 hiov[i].iov_base = new char [hiov[i].iov_len];
971 p->readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
972 p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
973 hiov[i].iov_len);
974 }
975
976 int result = writev(process->sim_fd(fd), hiov, count);
977
978 for (size_t i = 0; i < count; ++i)
979 delete [] (char *)hiov[i].iov_base;
980
981 if (result < 0)
982 return -errno;
983
984 return 0;
985}
986
987
988/// Target mmap() handler.
989///
990/// We don't really handle mmap(). If the target is mmaping an
991/// anonymous region or /dev/zero, we can get away with doing basically
992/// nothing (since memory is initialized to zero and the simulator
993/// doesn't really check addresses anyway).
994///
995template <class OS>
996SyscallReturn
997mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
998{
999 int index = 0;
1000 Addr start = p->getSyscallArg(tc, index);
1001 uint64_t length = p->getSyscallArg(tc, index);
1002 index++; // int prot = p->getSyscallArg(tc, index);
1003 int flags = p->getSyscallArg(tc, index);
1004 int tgt_fd = p->getSyscallArg(tc, index);
1005 // int offset = p->getSyscallArg(tc, index);
1006
1007 if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
1008 Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd);
1009 if (!fd_map || fd_map->fd < 0) {
1010 warn("mmap failing: target fd %d is not valid\n", tgt_fd);
1011 return -EBADF;
1012 }
1013
1014 if (fd_map->filename != "/dev/zero") {
1015 // This is very likely broken, but leave a warning here
1016 // (rather than panic) in case /dev/zero is known by
1017 // another name on some platform
1018 warn("allowing mmap of file %s; mmap not supported on files"
1019 " other than /dev/zero\n", fd_map->filename);
1020 }
1021 }
1022
1023 if ((start % TheISA::VMPageSize) != 0 ||
1024 (length % TheISA::VMPageSize) != 0) {
1025 warn("mmap failing: arguments not page-aligned: "
1026 "start 0x%x length 0x%x",
1027 start, length);
1028 return -EINVAL;
1029 }
1030
1030 // are we ok with clobbering existing mappings? only set this to
1031 // true if the user has been warned.
1032 bool clobber = false;
1033
1034 // try to use the caller-provided address if there is one
1035 bool use_provided_address = (start != 0);
1036
1037 if (use_provided_address) {
1038 // check to see if the desired address is already in use
1039 if (!p->pTable->isUnmapped(start, length)) {
1040 // there are existing mappings in the desired range
1041 // whether we clobber them or not depends on whether the caller
1042 // specified MAP_FIXED
1043 if (flags & OS::TGT_MAP_FIXED) {
1044 // MAP_FIXED specified: clobber existing mappings
1045 warn("mmap: MAP_FIXED at 0x%x overwrites existing mappings\n",
1046 start);
1047 clobber = true;
1048 } else {
1049 // MAP_FIXED not specified: ignore suggested start address
1050 warn("mmap: ignoring suggested map address 0x%x\n", start);
1051 use_provided_address = false;
1052 }
1053 }
1031 if (start != 0) {
1032 warn("mmap: ignoring suggested map address 0x%x, using 0x%x",
1033 start, p->mmap_end);
1034 }
1035
1056 if (!use_provided_address) {
1057 // no address provided, or provided address unusable:
1058 // pick next address from our "mmap region"
1059 if (OS::mmapGrowsDown()) {
1060 start = p->mmap_end - length;
1061 p->mmap_end = start;
1062 } else {
1063 start = p->mmap_end;
1064 p->mmap_end += length;
1065 }
1036 // pick next address from our "mmap region"
1037 if (OS::mmapGrowsDown()) {
1038 start = p->mmap_end - length;
1039 p->mmap_end = start;
1040 } else {
1041 start = p->mmap_end;
1042 p->mmap_end += length;
1043 }
1044 p->pTable->allocate(start, length);
1045
1068 p->allocateMem(start, length, clobber);
1069
1046 return start;
1047}
1048
1049/// Target getrlimit() handler.
1050template <class OS>
1051SyscallReturn
1052getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1053 ThreadContext *tc)
1054{
1055 int index = 0;
1056 unsigned resource = process->getSyscallArg(tc, index);
1057 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1058
1059 switch (resource) {
1060 case OS::TGT_RLIMIT_STACK:
1061 // max stack size in bytes: make up a number (8MB for now)
1062 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
1087 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1088 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1063 rlp->rlim_cur = htog(rlp->rlim_cur);
1064 rlp->rlim_max = htog(rlp->rlim_max);
1065 break;
1066
1067 case OS::TGT_RLIMIT_DATA:
1068 // max data segment size in bytes: make up a number
1069 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
1094 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1095 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1070 rlp->rlim_cur = htog(rlp->rlim_cur);
1071 rlp->rlim_max = htog(rlp->rlim_max);
1072 break;
1073
1074 default:
1075 std::cerr << "getrlimitFunc: unimplemented resource " << resource
1076 << std::endl;
1077 abort();
1078 break;
1079 }
1080
1105 rlp.copyOut(tc->getMemProxy());
1081 rlp.copyOut(tc->getMemPort());
1082 return 0;
1083}
1084
1085/// Target gettimeofday() handler.
1086template <class OS>
1087SyscallReturn
1088gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1089 ThreadContext *tc)
1090{
1091 int index = 0;
1092 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1093
1094 getElapsedTime(tp->tv_sec, tp->tv_usec);
1095 tp->tv_sec += seconds_since_epoch;
1096 tp->tv_sec = TheISA::htog(tp->tv_sec);
1097 tp->tv_usec = TheISA::htog(tp->tv_usec);
1098
1123 tp.copyOut(tc->getMemProxy());
1099 tp.copyOut(tc->getMemPort());
1100
1101 return 0;
1102}
1103
1104
1105/// Target utimes() handler.
1106template <class OS>
1107SyscallReturn
1108utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1109 ThreadContext *tc)
1110{
1111 std::string path;
1112
1113 int index = 0;
1138 if (!tc->getMemProxy()->tryReadString(path,
1114 if (!tc->getMemPort()->tryReadString(path,
1115 process->getSyscallArg(tc, index))) {
1116 return -EFAULT;
1117 }
1118
1119 TypedBufferArg<typename OS::timeval [2]>
1120 tp(process->getSyscallArg(tc, index));
1145 tp.copyIn(tc->getMemProxy());
1121 tp.copyIn(tc->getMemPort());
1122
1123 struct timeval hostTimeval[2];
1124 for (int i = 0; i < 2; ++i)
1125 {
1150 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
1151 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
1126 hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec);
1127 hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec);
1128 }
1129
1130 // Adjust path for current working directory
1131 path = process->fullPath(path);
1132
1133 int result = utimes(path.c_str(), hostTimeval);
1134
1135 if (result < 0)
1136 return -errno;
1137
1138 return 0;
1139}
1140/// Target getrusage() function.
1141template <class OS>
1142SyscallReturn
1143getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1144 ThreadContext *tc)
1145{
1146 int index = 0;
1147 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
1148 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
1149
1150 rup->ru_utime.tv_sec = 0;
1151 rup->ru_utime.tv_usec = 0;
1152 rup->ru_stime.tv_sec = 0;
1153 rup->ru_stime.tv_usec = 0;
1154 rup->ru_maxrss = 0;
1155 rup->ru_ixrss = 0;
1156 rup->ru_idrss = 0;
1157 rup->ru_isrss = 0;
1158 rup->ru_minflt = 0;
1159 rup->ru_majflt = 0;
1160 rup->ru_nswap = 0;
1161 rup->ru_inblock = 0;
1162 rup->ru_oublock = 0;
1163 rup->ru_msgsnd = 0;
1164 rup->ru_msgrcv = 0;
1165 rup->ru_nsignals = 0;
1166 rup->ru_nvcsw = 0;
1167 rup->ru_nivcsw = 0;
1168
1169 switch (who) {
1170 case OS::TGT_RUSAGE_SELF:
1171 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
1196 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
1197 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
1172 rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
1173 rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
1174 break;
1175
1176 case OS::TGT_RUSAGE_CHILDREN:
1177 // do nothing. We have no child processes, so they take no time.
1178 break;
1179
1180 default:
1181 // don't really handle THREAD or CHILDREN, but just warn and
1182 // plow ahead
1183 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1184 who);
1185 }
1186
1211 rup.copyOut(tc->getMemProxy());
1187 rup.copyOut(tc->getMemPort());
1188
1189 return 0;
1190}
1191
1192/// Target times() function.
1193template <class OS>
1194SyscallReturn
1195timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1196 ThreadContext *tc)
1197{
1198 int index = 0;
1199 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
1200
1201 // Fill in the time structure (in clocks)
1202 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1203 bufp->tms_utime = clocks;
1204 bufp->tms_stime = 0;
1205 bufp->tms_cutime = 0;
1206 bufp->tms_cstime = 0;
1207
1208 // Convert to host endianness
1233 bufp->tms_utime = TheISA::htog(bufp->tms_utime);
1209 bufp->tms_utime = htog(bufp->tms_utime);
1210
1211 // Write back
1236 bufp.copyOut(tc->getMemProxy());
1212 bufp.copyOut(tc->getMemPort());
1213
1214 // Return clock ticks since system boot
1215 return clocks;
1216}
1217
1218/// Target time() function.
1219template <class OS>
1220SyscallReturn
1221timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1222 ThreadContext *tc)
1223{
1224 typename OS::time_t sec, usec;
1225 getElapsedTime(sec, usec);
1226 sec += seconds_since_epoch;
1227
1228 int index = 0;
1229 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1230 if(taddr != 0) {
1231 typename OS::time_t t = sec;
1256 t = TheISA::htog(t);
1257 SETranslatingPortProxy *p = tc->getMemProxy();
1232 t = htog(t);
1233 TranslatingPort *p = tc->getMemPort();
1234 p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1235 }
1236 return sec;
1237}
1238
1239
1240#endif // __SIM_SYSCALL_EMUL_HH__