/* Machine independent support for QNX Neutrino /proc (process file system)
for GDB. Written by Colin Burgess at QNX Software Systems Limited.
- Copyright (C) 2003-2015 Free Software Foundation, Inc.
+ Copyright (C) 2003-2016 Free Software Foundation, Inc.
Contributed by QNX Software Systems Ltd.
(nodestr != NULL) ? nodestr : "local node");
}
+/* Target to_pid_to_exec_file implementation. */
+
+static char *
+procfs_pid_to_exec_file (struct target_ops *ops, const int pid)
+{
+ int proc_fd;
+ static char proc_path[PATH_MAX];
+ ssize_t rd;
+
+ /* Read exe file name. */
+ snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile",
+ (nodestr != NULL) ? nodestr : "", pid);
+ proc_fd = open (proc_path, O_RDONLY);
+ if (proc_fd == -1)
+ return NULL;
+
+ rd = read (proc_fd, proc_path, sizeof (proc_path) - 1);
+ close (proc_fd);
+ if (rd <= 0)
+ {
+ proc_path[0] = '\0';
+ return NULL;
+ }
+ proc_path[rd] = '\0';
+ return proc_path;
+}
+
/* Attach to process PID, then initialize for debugging it. */
static void
procfs_attach (struct target_ops *ops, const char *args, int from_tty)
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
}
+ nto_inferior_data (NULL)->stopped_flags = status.flags;
+ nto_inferior_data (NULL)->stopped_pc = status.ip;
+
if (status.flags & _DEBUG_FLAG_SSTEP)
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
t->to_interrupt = procfs_interrupt;
t->to_have_continuable_watchpoint = 1;
t->to_extra_thread_info = nto_extra_thread_info;
+ t->to_pid_to_exec_file = procfs_pid_to_exec_file;
nto_native_ops = t;
static int
procfs_stopped_by_watchpoint (struct target_ops *ops)
{
- return 0;
+ /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are
+ stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode;
+ future gdb versions will likely run in 'non-stop' mode in which case
+ we will have to store/examine statuses per thread in question.
+ Until then, this will work fine. */
+
+ struct inferior *inf = current_inferior ();
+ struct nto_inferior_data *inf_data;
+
+ gdb_assert (inf != NULL);
+
+ inf_data = nto_inferior_data (inf);
+
+ return inf_data->stopped_flags
+ & (_DEBUG_FLAG_TRACE_RD
+ | _DEBUG_FLAG_TRACE_WR
+ | _DEBUG_FLAG_TRACE_MODIFY);
}