1 /* Machine independent support for QNX Neutrino /proc (process file system)
2 for GDB. Written by Colin Burgess at QNX Software Systems Limited.
4 Copyright (C) 2003-2014 Free Software Foundation, Inc.
6 Contributed by QNX Software Systems Ltd.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/debug.h>
28 #include <sys/procfs.h>
29 #include <sys/neutrino.h>
30 #include <sys/syspage.h>
32 #include <sys/netmgr.h>
34 #include "exceptions.h"
40 #include "gdbthread.h"
45 #include "inf-child.h"
48 #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\
49 _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY)
53 static void (*ofunc) ();
55 static procfs_run run;
57 static ptid_t do_attach (ptid_t ptid);
59 static int procfs_can_use_hw_breakpoint (struct target_ops *self,
62 static int procfs_insert_hw_watchpoint (struct target_ops *self,
63 CORE_ADDR addr, int len, int type,
64 struct expression *cond);
66 static int procfs_remove_hw_watchpoint (struct target_ops *self,
67 CORE_ADDR addr, int len, int type,
68 struct expression *cond);
70 static int procfs_stopped_by_watchpoint (struct target_ops *ops);
72 /* These two globals are only ever set in procfs_open_1, but are
73 referenced elsewhere. 'nto_procfs_node' is a flag used to say
74 whether we are local, or we should get the current node descriptor
75 for the remote QNX node. */
76 static char nto_procfs_path[PATH_MAX] = { "/proc" };
77 static unsigned nto_procfs_node = ND_LOCAL_NODE;
79 /* Return the current QNX Node, or error out. This is a simple
80 wrapper for the netmgr_strtond() function. The reason this
81 is required is because QNX node descriptors are transient so
82 we have to re-acquire them every time. */
88 if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0)
91 node = netmgr_strtond (nto_procfs_path, 0);
93 error (_("Lost the QNX node. Debug session probably over."));
99 procfs_is_nto_target (bfd *abfd)
101 return GDB_OSABI_QNXNTO;
104 /* This is called when we call 'target native' or 'target procfs
105 <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg
106 will be a QNX node string, eg: "/net/some_node". If arg is not a
107 valid QNX node, we will default to local. */
109 procfs_open_1 (struct target_ops *ops, char *arg, int from_tty)
115 procfs_sysinfo *sysinfo;
116 struct cleanup *cleanups;
118 /* Offer to kill previous inferiors before opening this target. */
119 target_preopen (from_tty);
121 nto_is_nto_target = procfs_is_nto_target;
123 /* Set the default node used for spawning to this one,
124 and only override it if there is a valid arg. */
126 nto_procfs_node = ND_LOCAL_NODE;
127 nodestr = arg ? xstrdup (arg) : arg;
133 nto_procfs_node = netmgr_strtond (nodestr, &endstr);
134 if (nto_procfs_node == -1)
136 if (errno == ENOTSUP)
137 printf_filtered ("QNX Net Manager not found.\n");
138 printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr,
139 errno, safe_strerror (errno));
142 nto_procfs_node = ND_LOCAL_NODE;
146 if (*(endstr - 1) == '/')
152 snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "",
157 fd = open (nto_procfs_path, O_RDONLY);
160 printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno,
161 safe_strerror (errno));
162 error (_("Invalid procfs arg"));
164 cleanups = make_cleanup_close (fd);
166 sysinfo = (void *) buffer;
167 if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK)
169 printf_filtered ("Error getting size: %d (%s)\n", errno,
170 safe_strerror (errno));
171 error (_("Devctl failed."));
175 total_size = sysinfo->total_size;
176 sysinfo = alloca (total_size);
179 printf_filtered ("Memory error: %d (%s)\n", errno,
180 safe_strerror (errno));
181 error (_("alloca failed."));
185 if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK)
187 printf_filtered ("Error getting sysinfo: %d (%s)\n", errno,
188 safe_strerror (errno));
189 error (_("Devctl failed."));
194 nto_map_arch_to_cputype (gdbarch_bfd_arch_info
195 (target_gdbarch ())->arch_name))
196 error (_("Invalid target CPU."));
200 do_cleanups (cleanups);
202 inf_child_open_target (ops, arg, from_tty);
203 printf_filtered ("Debugging using %s\n", nto_procfs_path);
207 procfs_set_thread (ptid_t ptid)
211 tid = ptid_get_tid (ptid);
212 devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0);
215 /* Return nonzero if the thread TH is still alive. */
217 procfs_thread_alive (struct target_ops *ops, ptid_t ptid)
221 procfs_status status;
224 tid = ptid_get_tid (ptid);
225 pid = ptid_get_pid (ptid);
227 if (kill (pid, 0) == -1)
231 if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS,
232 &status, sizeof (status), 0)) != EOK)
235 /* Thread is alive or dead but not yet joined,
236 or dead and there is an alive (or dead unjoined) thread with
239 If the tid is not the same as requested, requested tid is dead. */
240 return (status.tid == tid) && (status.state != STATE_DEAD);
244 update_thread_private_data_name (struct thread_info *new_thread,
248 struct private_thread_info *pti;
250 gdb_assert (newname != NULL);
251 gdb_assert (new_thread != NULL);
252 newnamelen = strlen (newname);
253 if (!new_thread->private)
255 new_thread->private = xmalloc (offsetof (struct private_thread_info,
258 memcpy (new_thread->private->name, newname, newnamelen + 1);
260 else if (strcmp (newname, new_thread->private->name) != 0)
262 /* Reallocate if neccessary. */
263 int oldnamelen = strlen (new_thread->private->name);
265 if (oldnamelen < newnamelen)
266 new_thread->private = xrealloc (new_thread->private,
267 offsetof (struct private_thread_info,
270 memcpy (new_thread->private->name, newname, newnamelen + 1);
275 update_thread_private_data (struct thread_info *new_thread,
276 pthread_t tid, int state, int flags)
278 struct private_thread_info *pti;
280 struct _thread_name *tn;
281 procfs_threadctl tctl;
283 #if _NTO_VERSION > 630
284 gdb_assert (new_thread != NULL);
286 if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo,
287 sizeof(pidinfo), 0) != EOK)
290 memset (&tctl, 0, sizeof (tctl));
291 tctl.cmd = _NTO_TCTL_NAME;
292 tn = (struct _thread_name *) (&tctl.data);
294 /* Fetch name for the given thread. */
296 tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn);
297 tn->new_name_len = -1; /* Getting, not setting. */
298 if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK)
299 tn->name_buf[0] = '\0';
301 tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0';
303 update_thread_private_data_name (new_thread, tn->name_buf);
305 pti = (struct private_thread_info *) new_thread->private;
309 #endif /* _NTO_VERSION */
313 procfs_find_new_threads (struct target_ops *ops)
315 procfs_status status;
319 struct thread_info *new_thread;
324 pid = ptid_get_pid (inferior_ptid);
328 for (tid = 1;; ++tid)
330 if (status.tid == tid
331 && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0)
334 if (status.tid != tid)
335 /* The reason why this would not be equal is that devctl might have
336 returned different tid, meaning the requested tid no longer exists
337 (e.g. thread exited). */
339 ptid = ptid_build (pid, 0, tid);
340 new_thread = find_thread_ptid (ptid);
342 new_thread = add_thread (ptid);
343 update_thread_private_data (new_thread, tid, status.state, 0);
350 do_closedir_cleanup (void *dir)
356 procfs_pidlist (char *args, int from_tty)
359 struct dirent *dirp = NULL;
361 procfs_info *pidinfo = NULL;
362 procfs_debuginfo *info = NULL;
363 procfs_status *status = NULL;
364 pid_t num_threads = 0;
367 struct cleanup *cleanups;
369 dp = opendir (nto_procfs_path);
372 fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)",
373 nto_procfs_path, errno, safe_strerror (errno));
377 cleanups = make_cleanup (do_closedir_cleanup, dp);
379 /* Start scan at first pid. */
385 struct cleanup *inner_cleanup;
387 /* Get the right pid and procfs path for the pid. */
393 do_cleanups (cleanups);
396 snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name);
397 pid = atoi (dirp->d_name);
401 /* Open the procfs path. */
402 fd = open (buf, O_RDONLY);
405 fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n",
406 buf, errno, safe_strerror (errno));
407 do_cleanups (cleanups);
410 inner_cleanup = make_cleanup_close (fd);
412 pidinfo = (procfs_info *) buf;
413 if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK)
415 fprintf_unfiltered (gdb_stderr,
416 "devctl DCMD_PROC_INFO failed - %d (%s)\n",
417 errno, safe_strerror (errno));
420 num_threads = pidinfo->num_threads;
422 info = (procfs_debuginfo *) buf;
423 if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK)
424 strcpy (name, "unavailable");
426 strcpy (name, info->path);
428 /* Collect state info on all the threads. */
429 status = (procfs_status *) buf;
430 for (status->tid = 1; status->tid <= num_threads; status->tid++)
432 if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK
435 if (status->tid != 0)
436 printf_filtered ("%s - %d/%d\n", name, pid, status->tid);
439 do_cleanups (inner_cleanup);
441 while (dirp != NULL);
443 do_cleanups (cleanups);
448 procfs_meminfo (char *args, int from_tty)
450 procfs_mapinfo *mapinfos = NULL;
451 static int num_mapinfos = 0;
452 procfs_mapinfo *mapinfo_p, *mapinfo_p2;
453 int flags = ~0, err, num, i, j;
457 procfs_debuginfo info;
458 char buff[_POSIX_PATH_MAX];
466 unsigned debug_vaddr;
467 unsigned long long offset;
472 unsigned long long ino;
479 /* Get the number of map entrys. */
480 err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num);
483 printf ("failed devctl num mapinfos - %d (%s)\n", err,
484 safe_strerror (err));
488 mapinfos = xmalloc (num * sizeof (procfs_mapinfo));
491 mapinfo_p = mapinfos;
493 /* Fill the map entrys. */
494 err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num
495 * sizeof (procfs_mapinfo), &num);
498 printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err));
503 num = min (num, num_mapinfos);
505 /* Run through the list of mapinfos, and store the data and text info
506 so we can print it at the bottom of the loop. */
507 for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++)
509 if (!(mapinfo_p->flags & flags))
512 if (mapinfo_p->ino == 0) /* Already visited. */
515 map.info.vaddr = mapinfo_p->vaddr;
517 err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0);
521 memset (&printme, 0, sizeof printme);
522 printme.dev = mapinfo_p->dev;
523 printme.ino = mapinfo_p->ino;
524 printme.text.addr = mapinfo_p->vaddr;
525 printme.text.size = mapinfo_p->size;
526 printme.text.flags = mapinfo_p->flags;
527 printme.text.offset = mapinfo_p->offset;
528 printme.text.debug_vaddr = map.info.vaddr;
529 strcpy (printme.name, map.info.path);
531 /* Check for matching data. */
532 for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++)
534 if (mapinfo_p2->vaddr != mapinfo_p->vaddr
535 && mapinfo_p2->ino == mapinfo_p->ino
536 && mapinfo_p2->dev == mapinfo_p->dev)
538 map.info.vaddr = mapinfo_p2->vaddr;
540 devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0);
544 if (strcmp (map.info.path, printme.name))
547 /* Lower debug_vaddr is always text, if nessessary, swap. */
548 if ((int) map.info.vaddr < (int) printme.text.debug_vaddr)
550 memcpy (&(printme.data), &(printme.text),
551 sizeof (printme.data));
552 printme.text.addr = mapinfo_p2->vaddr;
553 printme.text.size = mapinfo_p2->size;
554 printme.text.flags = mapinfo_p2->flags;
555 printme.text.offset = mapinfo_p2->offset;
556 printme.text.debug_vaddr = map.info.vaddr;
560 printme.data.addr = mapinfo_p2->vaddr;
561 printme.data.size = mapinfo_p2->size;
562 printme.data.flags = mapinfo_p2->flags;
563 printme.data.offset = mapinfo_p2->offset;
564 printme.data.debug_vaddr = map.info.vaddr;
571 printf_filtered ("%s\n", printme.name);
572 printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size,
574 printf_filtered ("\t\tflags=%08x\n", printme.text.flags);
575 printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr);
576 printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8));
577 if (printme.data.size)
579 printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size,
581 printf_filtered ("\t\tflags=%08x\n", printme.data.flags);
582 printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr);
583 printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8));
585 printf_filtered ("\tdev=0x%x\n", printme.dev);
586 printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino);
592 /* Print status information about what we're accessing. */
594 procfs_files_info (struct target_ops *ignore)
596 struct inferior *inf = current_inferior ();
598 printf_unfiltered ("\tUsing the running image of %s %s via %s.\n",
599 inf->attach_flag ? "attached" : "child",
600 target_pid_to_str (inferior_ptid), nto_procfs_path);
603 /* Attach to process PID, then initialize for debugging it. */
605 procfs_attach (struct target_ops *ops, const char *args, int from_tty)
609 struct inferior *inf;
611 pid = parse_pid_to_attach (args);
613 if (pid == getpid ())
614 error (_("Attaching GDB to itself is not a good idea..."));
618 exec_file = (char *) get_exec_file (0);
621 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
622 target_pid_to_str (pid_to_ptid (pid)));
624 printf_unfiltered ("Attaching to %s\n",
625 target_pid_to_str (pid_to_ptid (pid)));
627 gdb_flush (gdb_stdout);
629 inferior_ptid = do_attach (pid_to_ptid (pid));
630 inf = current_inferior ();
631 inferior_appeared (inf, pid);
632 inf->attach_flag = 1;
634 if (!target_is_pushed (ops))
637 procfs_find_new_threads (ops);
641 procfs_post_attach (struct target_ops *self, pid_t pid)
644 solib_create_inferior_hook (0);
648 do_attach (ptid_t ptid)
650 procfs_status status;
651 struct sigevent event;
654 snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path,
655 ptid_get_pid (ptid));
656 ctl_fd = open (path, O_RDWR);
658 error (_("Couldn't open proc file %s, error %d (%s)"), path, errno,
659 safe_strerror (errno));
660 if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK)
661 error (_("Couldn't stop process"));
663 /* Define a sigevent for process stopped notification. */
664 event.sigev_notify = SIGEV_SIGNAL_THREAD;
665 event.sigev_signo = SIGUSR1;
666 event.sigev_code = 0;
667 event.sigev_value.sival_ptr = NULL;
668 event.sigev_priority = -1;
669 devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0);
671 if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK
672 && status.flags & _DEBUG_FLAG_STOPPED)
673 SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0);
674 nto_init_solib_absolute_prefix ();
675 return ptid_build (ptid_get_pid (ptid), 0, status.tid);
678 /* Ask the user what to do when an interrupt is received. */
680 interrupt_query (void)
682 target_terminal_ours ();
684 if (query (_("Interrupted while waiting for the program.\n\
685 Give up (and stop debugging it)? ")))
687 target_mourn_inferior ();
691 target_terminal_inferior ();
694 /* The user typed ^C twice. */
696 nto_interrupt_twice (int signo)
698 signal (signo, ofunc);
700 signal (signo, nto_interrupt_twice);
704 nto_interrupt (int signo)
706 /* If this doesn't work, try more severe steps. */
707 signal (signo, nto_interrupt_twice);
709 target_stop (inferior_ptid);
713 procfs_wait (struct target_ops *ops,
714 ptid_t ptid, struct target_waitstatus *ourstatus, int options)
718 procfs_status status;
719 static int exit_signo = 0; /* To track signals that cause termination. */
721 ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
723 if (ptid_equal (inferior_ptid, null_ptid))
725 ourstatus->kind = TARGET_WAITKIND_STOPPED;
726 ourstatus->value.sig = GDB_SIGNAL_0;
732 sigaddset (&set, SIGUSR1);
734 devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
735 while (!(status.flags & _DEBUG_FLAG_ISTOP))
737 ofunc = (void (*)()) signal (SIGINT, nto_interrupt);
738 sigwaitinfo (&set, &info);
739 signal (SIGINT, ofunc);
740 devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
743 if (status.flags & _DEBUG_FLAG_SSTEP)
745 ourstatus->kind = TARGET_WAITKIND_STOPPED;
746 ourstatus->value.sig = GDB_SIGNAL_TRAP;
748 /* Was it a breakpoint? */
749 else if (status.flags & _DEBUG_FLAG_TRACE)
751 ourstatus->kind = TARGET_WAITKIND_STOPPED;
752 ourstatus->value.sig = GDB_SIGNAL_TRAP;
754 else if (status.flags & _DEBUG_FLAG_ISTOP)
758 case _DEBUG_WHY_SIGNALLED:
759 ourstatus->kind = TARGET_WAITKIND_STOPPED;
760 ourstatus->value.sig =
761 gdb_signal_from_host (status.info.si_signo);
764 case _DEBUG_WHY_FAULTED:
765 ourstatus->kind = TARGET_WAITKIND_STOPPED;
766 if (status.info.si_signo == SIGTRAP)
768 ourstatus->value.sig = 0;
773 ourstatus->value.sig =
774 gdb_signal_from_host (status.info.si_signo);
775 exit_signo = ourstatus->value.sig;
779 case _DEBUG_WHY_TERMINATED:
783 waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG);
786 /* Abnormal death. */
787 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
788 ourstatus->value.sig = exit_signo;
793 ourstatus->kind = TARGET_WAITKIND_EXITED;
794 ourstatus->value.integer = WEXITSTATUS (waitval);
800 case _DEBUG_WHY_REQUESTED:
801 /* We are assuming a requested stop is due to a SIGINT. */
802 ourstatus->kind = TARGET_WAITKIND_STOPPED;
803 ourstatus->value.sig = GDB_SIGNAL_INT;
809 return ptid_build (status.pid, 0, status.tid);
812 /* Read the current values of the inferior's registers, both the
813 general register set and floating point registers (if supported)
814 and update gdb's idea of their current values. */
816 procfs_fetch_registers (struct target_ops *ops,
817 struct regcache *regcache, int regno)
823 procfs_altreg altreg;
828 procfs_set_thread (inferior_ptid);
829 if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK)
830 nto_supply_gregset (regcache, (char *) ®.greg);
831 if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size)
833 nto_supply_fpregset (regcache, (char *) ®.fpreg);
834 if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size)
836 nto_supply_altregset (regcache, (char *) ®.altreg);
839 /* Helper for procfs_xfer_partial that handles memory transfers.
840 Arguments are like target_xfer_partial. */
842 static enum target_xfer_status
843 procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
844 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
848 if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr)
849 return TARGET_XFER_E_IO;
851 if (writebuf != NULL)
852 nbytes = write (ctl_fd, writebuf, len);
854 nbytes = read (ctl_fd, readbuf, len);
856 return TARGET_XFER_E_IO;
857 *xfered_len = nbytes;
858 return TARGET_XFER_OK;
861 /* Target to_xfer_partial implementation. */
863 static enum target_xfer_status
864 procfs_xfer_partial (struct target_ops *ops, enum target_object object,
865 const char *annex, gdb_byte *readbuf,
866 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
867 ULONGEST *xfered_len)
871 case TARGET_OBJECT_MEMORY:
872 return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
874 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
875 readbuf, writebuf, offset, len);
879 /* Take a program previously attached to and detaches it.
880 The program resumes execution and will no longer stop
881 on signals, etc. We'd better not have left any breakpoints
882 in the program or it'll die when it hits one. */
884 procfs_detach (struct target_ops *ops, const char *args, int from_tty)
891 char *exec_file = get_exec_file (0);
894 printf_unfiltered ("Detaching from program: %s %s\n",
895 exec_file, target_pid_to_str (inferior_ptid));
896 gdb_flush (gdb_stdout);
899 siggnal = atoi (args);
902 SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0);
907 pid = ptid_get_pid (inferior_ptid);
908 inferior_ptid = null_ptid;
909 detach_inferior (pid);
911 inf_child_maybe_unpush_target (ops);
915 procfs_breakpoint (CORE_ADDR addr, int type, int size)
922 errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0);
929 procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
930 struct bp_target_info *bp_tgt)
932 return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0);
936 procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
937 struct bp_target_info *bp_tgt)
939 return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1);
943 procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch,
944 struct bp_target_info *bp_tgt)
946 return procfs_breakpoint (bp_tgt->placed_address,
947 _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0);
951 procfs_remove_hw_breakpoint (struct target_ops *self,
952 struct gdbarch *gdbarch,
953 struct bp_target_info *bp_tgt)
955 return procfs_breakpoint (bp_tgt->placed_address,
956 _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1);
960 procfs_resume (struct target_ops *ops,
961 ptid_t ptid, int step, enum gdb_signal signo)
964 procfs_status status;
965 sigset_t *run_fault = (sigset_t *) (void *) &run.fault;
967 if (ptid_equal (inferior_ptid, null_ptid))
970 procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid :
973 run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE;
975 run.flags |= _DEBUG_RUN_STEP;
977 sigemptyset (run_fault);
978 sigaddset (run_fault, FLTBPT);
979 sigaddset (run_fault, FLTTRACE);
980 sigaddset (run_fault, FLTILL);
981 sigaddset (run_fault, FLTPRIV);
982 sigaddset (run_fault, FLTBOUNDS);
983 sigaddset (run_fault, FLTIOVF);
984 sigaddset (run_fault, FLTIZDIV);
985 sigaddset (run_fault, FLTFPE);
986 /* Peter V will be changing this at some point. */
987 sigaddset (run_fault, FLTPAGE);
989 run.flags |= _DEBUG_RUN_ARM;
991 signal_to_pass = gdb_signal_to_host (signo);
995 devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
996 signal_to_pass = gdb_signal_to_host (signo);
997 if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED))
999 if (signal_to_pass != status.info.si_signo)
1001 SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0,
1002 signal_to_pass, 0, 0);
1003 run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG;
1005 else /* Let it kill the program without telling us. */
1006 sigdelset (&run.trace, signal_to_pass);
1010 run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT;
1012 errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0);
1015 perror (_("run error!\n"));
1021 procfs_mourn_inferior (struct target_ops *ops)
1023 if (!ptid_equal (inferior_ptid, null_ptid))
1025 SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0);
1028 inferior_ptid = null_ptid;
1029 init_thread_list ();
1030 inf_child_mourn_inferior (ops);
1033 /* This function breaks up an argument string into an argument
1034 vector suitable for passing to execvp().
1035 E.g., on "run a b c d" this routine would get as input
1036 the string "a b c d", and as output it would fill in argv with
1037 the four arguments "a", "b", "c", "d". The only additional
1038 functionality is simple quoting. The gdb command:
1040 will fill in argv with the three args "a", "b c d", "e". */
1042 breakup_args (char *scratch, char **argv)
1044 char *pp, *cp = scratch;
1049 /* Scan past leading separators. */
1051 while (*cp == ' ' || *cp == '\t' || *cp == '\n')
1054 /* Break if at end of string. */
1062 quoting = strchr (cp, '"') ? 1 : 0;
1067 /* Scan for next arg separator. */
1070 cp = strchr (pp, '"');
1071 if ((cp == NULL) || (!quoting))
1072 cp = strchr (pp, ' ');
1074 cp = strchr (pp, '\t');
1076 cp = strchr (pp, '\n');
1078 /* No separators => end of string => break. */
1085 /* Replace the separator with a terminator. */
1089 /* Execv requires a null-terminated arg vector. */
1094 procfs_create_inferior (struct target_ops *ops, char *exec_file,
1095 char *allargs, char **env, int from_tty)
1097 struct inheritance inherit;
1101 const char *in = "", *out = "", *err = "";
1104 const char *inferior_io_terminal = get_inferior_io_terminal ();
1105 struct inferior *inf;
1107 argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) *
1109 argv[0] = get_exec_file (1);
1113 argv[0] = exec_file;
1118 args = xstrdup (allargs);
1119 breakup_args (args, exec_file ? &argv[1] : &argv[0]);
1121 argv = nto_parse_redirection (argv, &in, &out, &err);
1123 fds[0] = STDIN_FILENO;
1124 fds[1] = STDOUT_FILENO;
1125 fds[2] = STDERR_FILENO;
1127 /* If the user specified I/O via gdb's --tty= arg, use it, but only
1128 if the i/o is not also being specified via redirection. */
1129 if (inferior_io_terminal)
1132 in = inferior_io_terminal;
1134 out = inferior_io_terminal;
1136 err = inferior_io_terminal;
1141 fd = open (in, O_RDONLY);
1149 fd = open (out, O_WRONLY);
1157 fd = open (err, O_WRONLY);
1164 /* Clear any pending SIGUSR1's but keep the behavior the same. */
1165 signal (SIGUSR1, signal (SIGUSR1, SIG_IGN));
1168 sigaddset (&set, SIGUSR1);
1169 sigprocmask (SIG_UNBLOCK, &set, NULL);
1171 memset (&inherit, 0, sizeof (inherit));
1173 if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0)
1175 inherit.nd = nto_node ();
1176 inherit.flags |= SPAWN_SETND;
1177 inherit.flags &= ~SPAWN_EXEC;
1179 inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD;
1180 inherit.pgroup = SPAWN_NEWPGROUP;
1181 pid = spawnp (argv[0], 3, fds, &inherit, argv,
1182 ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0);
1185 sigprocmask (SIG_BLOCK, &set, NULL);
1188 error (_("Error spawning %s: %d (%s)"), argv[0], errno,
1189 safe_strerror (errno));
1191 if (fds[0] != STDIN_FILENO)
1193 if (fds[1] != STDOUT_FILENO)
1195 if (fds[2] != STDERR_FILENO)
1198 inferior_ptid = do_attach (pid_to_ptid (pid));
1199 procfs_find_new_threads (ops);
1201 inf = current_inferior ();
1202 inferior_appeared (inf, pid);
1203 inf->attach_flag = 0;
1205 flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */
1206 errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0);
1209 /* FIXME: expected warning? */
1210 /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n",
1211 errn, strerror(errn) ); */
1213 if (!target_is_pushed (ops))
1215 target_terminal_init ();
1217 if (exec_bfd != NULL
1218 || (symfile_objfile != NULL && symfile_objfile->obfd != NULL))
1219 solib_create_inferior_hook (0);
1223 procfs_stop (struct target_ops *self, ptid_t ptid)
1225 devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0);
1229 procfs_kill_inferior (struct target_ops *ops)
1231 target_mourn_inferior ();
1234 /* Fill buf with regset and return devctl cmd to do the setting. Return
1235 -1 if we fail to get the regset. Store size of regset in regsize. */
1237 get_regset (int regset, char *buf, int bufsize, int *regsize)
1239 int dev_get, dev_set;
1242 case NTO_REG_GENERAL:
1243 dev_get = DCMD_PROC_GETGREG;
1244 dev_set = DCMD_PROC_SETGREG;
1248 dev_get = DCMD_PROC_GETFPREG;
1249 dev_set = DCMD_PROC_SETFPREG;
1253 dev_get = DCMD_PROC_GETALTREG;
1254 dev_set = DCMD_PROC_SETALTREG;
1257 case NTO_REG_SYSTEM:
1261 if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK)
1268 procfs_store_registers (struct target_ops *ops,
1269 struct regcache *regcache, int regno)
1275 procfs_altreg altreg;
1279 int len, regset, regsize, dev_set, err;
1282 if (ptid_equal (inferior_ptid, null_ptid))
1284 procfs_set_thread (inferior_ptid);
1288 for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++)
1290 dev_set = get_regset (regset, (char *) ®,
1291 sizeof (reg), ®size);
1295 if (nto_regset_fill (regcache, regset, (char *) ®) == -1)
1298 err = devctl (ctl_fd, dev_set, ®, regsize, 0);
1300 fprintf_unfiltered (gdb_stderr,
1301 "Warning unable to write regset %d: %s\n",
1302 regno, safe_strerror (err));
1307 regset = nto_regset_id (regno);
1311 dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size);
1315 len = nto_register_area (get_regcache_arch (regcache),
1316 regno, regset, &off);
1321 regcache_raw_collect (regcache, regno, (char *) ® + off);
1323 err = devctl (ctl_fd, dev_set, ®, regsize, 0);
1325 fprintf_unfiltered (gdb_stderr,
1326 "Warning unable to write regset %d: %s\n", regno,
1327 safe_strerror (err));
1331 /* Set list of signals to be handled in the target. */
1334 procfs_pass_signals (struct target_ops *self,
1335 int numsigs, unsigned char *pass_signals)
1339 sigfillset (&run.trace);
1341 for (signo = 1; signo < NSIG; signo++)
1343 int target_signo = gdb_signal_from_host (signo);
1344 if (target_signo < numsigs && pass_signals[target_signo])
1345 sigdelset (&run.trace, signo);
1349 static struct tidinfo *
1350 procfs_thread_info (pid_t pid, short tid)
1357 procfs_pid_to_str (struct target_ops *ops, ptid_t ptid)
1359 static char buf[1024];
1361 struct tidinfo *tip;
1363 pid = ptid_get_pid (ptid);
1364 tid = ptid_get_tid (ptid);
1366 n = snprintf (buf, 1023, "process %d", pid);
1369 tip = procfs_thread_info (pid, tid);
1371 snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state);
1377 /* to_can_run implementation for "target procfs". Note this really
1378 means "can this target be the default run target", which there can
1379 be only one, and we make it be "target native" like other ports.
1380 "target procfs <node>" wouldn't make sense as default run target, as
1384 procfs_can_run (struct target_ops *self)
1389 /* "target procfs". */
1390 static struct target_ops nto_procfs_ops;
1392 /* "target native". */
1393 static struct target_ops *nto_native_ops;
1395 /* to_open implementation for "target procfs". */
1398 procfs_open (char *arg, int from_tty)
1400 procfs_open_1 (&nto_procfs_ops, arg, from_tty);
1403 /* to_open implementation for "target native". */
1406 procfs_native_open (char *arg, int from_tty)
1408 procfs_open_1 (nto_native_ops, arg, from_tty);
1411 /* Create the "native" and "procfs" targets. */
1414 init_procfs_targets (void)
1416 struct target_ops *t = inf_child_target ();
1418 /* Leave to_shortname as "native". */
1419 t->to_longname = "QNX Neutrino local process";
1420 t->to_doc = "QNX Neutrino local process (started by the \"run\" command).";
1421 t->to_open = procfs_native_open;
1422 t->to_attach = procfs_attach;
1423 t->to_post_attach = procfs_post_attach;
1424 t->to_detach = procfs_detach;
1425 t->to_resume = procfs_resume;
1426 t->to_wait = procfs_wait;
1427 t->to_fetch_registers = procfs_fetch_registers;
1428 t->to_store_registers = procfs_store_registers;
1429 t->to_xfer_partial = procfs_xfer_partial;
1430 t->to_files_info = procfs_files_info;
1431 t->to_insert_breakpoint = procfs_insert_breakpoint;
1432 t->to_remove_breakpoint = procfs_remove_breakpoint;
1433 t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
1434 t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint;
1435 t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint;
1436 t->to_insert_watchpoint = procfs_insert_hw_watchpoint;
1437 t->to_remove_watchpoint = procfs_remove_hw_watchpoint;
1438 t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint;
1439 t->to_kill = procfs_kill_inferior;
1440 t->to_create_inferior = procfs_create_inferior;
1441 t->to_mourn_inferior = procfs_mourn_inferior;
1442 t->to_pass_signals = procfs_pass_signals;
1443 t->to_thread_alive = procfs_thread_alive;
1444 t->to_find_new_threads = procfs_find_new_threads;
1445 t->to_pid_to_str = procfs_pid_to_str;
1446 t->to_stop = procfs_stop;
1447 t->to_have_continuable_watchpoint = 1;
1448 t->to_extra_thread_info = nto_extra_thread_info;
1452 /* Register "target native". This is the default run target. */
1455 /* Register "target procfs <node>". */
1456 nto_procfs_ops = *t;
1457 nto_procfs_ops.to_shortname = "procfs";
1458 nto_procfs_ops.to_can_run = procfs_can_run;
1459 t->to_longname = "QNX Neutrino local or remote process";
1460 t->to_doc = "QNX Neutrino process. target procfs <node>";
1461 t->to_open = procfs_open;
1463 add_target (&nto_procfs_ops);
1466 #define OSTYPE_NTO 1
1469 _initialize_procfs (void)
1473 init_procfs_targets ();
1475 /* We use SIGUSR1 to gain control after we block waiting for a process.
1476 We use sigwaitevent to wait. */
1478 sigaddset (&set, SIGUSR1);
1479 sigprocmask (SIG_BLOCK, &set, NULL);
1481 /* Initially, make sure all signals are reported. */
1482 sigfillset (&run.trace);
1484 /* Stuff some information. */
1485 nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags;
1486 nto_cpuinfo_valid = 1;
1488 add_info ("pidlist", procfs_pidlist, _("pidlist"));
1489 add_info ("meminfo", procfs_meminfo, _("memory information"));
1491 nto_is_nto_target = procfs_is_nto_target;
1496 procfs_hw_watchpoint (int addr, int len, int type)
1503 brk.type = _DEBUG_BREAK_RD;
1505 case 2: /* Read/Write. */
1506 brk.type = _DEBUG_BREAK_RW;
1508 default: /* Modify. */
1509 /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */
1510 brk.type = _DEBUG_BREAK_RW;
1512 brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */
1516 errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0);
1519 perror (_("Failed to set hardware watchpoint"));
1526 procfs_can_use_hw_breakpoint (struct target_ops *self,
1527 int type, int cnt, int othertype)
1533 procfs_remove_hw_watchpoint (struct target_ops *self,
1534 CORE_ADDR addr, int len, int type,
1535 struct expression *cond)
1537 return procfs_hw_watchpoint (addr, -1, type);
1541 procfs_insert_hw_watchpoint (struct target_ops *self,
1542 CORE_ADDR addr, int len, int type,
1543 struct expression *cond)
1545 return procfs_hw_watchpoint (addr, len, type);
1549 procfs_stopped_by_watchpoint (struct target_ops *ops)