/* Main code for remote server for GDB.
- Copyright (C) 1989-2014 Free Software Foundation, Inc.
+ Copyright (C) 1989-2015 Free Software Foundation, Inc.
This file is part of GDB.
requirement, so `Hc pPID.TID' is pretty much undefined. So
CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for
resuming all threads of the process (again, `Hc' isn't used for
- multi-process), or a specific thread ptid_t.
-
- We also set this when handling a single-thread `vCont' resume, as
- some places in the backends check it to know when (and for which
- thread) single-thread scheduler-locking is in effect. */
+ multi-process), or a specific thread ptid_t. */
ptid_t cont_thread;
/* The thread set with an `Hg' packet. */
int run_once;
int multi_process;
+int report_fork_events;
+int report_vfork_events;
int non_stop;
+int swbreak_feature;
+int hwbreak_feature;
/* Whether we should attempt to disable the operating system's address
space randomization feature before starting an inferior. */
static char **program_argv, **wrapper_argv;
-/* Enable debugging of h/w breakpoint/watchpoint support. */
-int debug_hw_points;
-
int pass_signals[GDB_SIGNAL_LAST];
int program_signals[GDB_SIGNAL_LAST];
int program_signals_p;
-jmp_buf toplevel;
-
/* The PID of the originally created or attached inferior. Used to
send signals to the process when GDB sends us an asynchronous interrupt
(user hitting Control-C in the client), and to wait for the child to exit
struct target_waitstatus status;
};
+/* The current btrace configuration. This is gdbserver's mirror of GDB's
+ btrace configuration. */
+static struct btrace_config current_btrace_conf;
+
DEFINE_QUEUE_P (notif_event_p);
/* Put a stop reply to the stop reply queue. */
signal (SIGTTIN, SIG_DFL);
#endif
- /* Clear this so the backend doesn't get confused, thinking
- CONT_THREAD died, and it needs to resume all threads. */
- cont_thread = null_ptid;
-
signal_pid = create_inferior (new_argv[0], new_argv);
/* FIXME: we don't actually know at this point that the create
if (last_status.kind != TARGET_WAITKIND_STOPPED)
return signal_pid;
- current_inferior->last_resume_kind = resume_stop;
- current_inferior->last_status = last_status;
+ current_thread->last_resume_kind = resume_stop;
+ current_thread->last_status = last_status;
}
while (last_status.value.sig != GDB_SIGNAL_TRAP);
if (last_status.kind != TARGET_WAITKIND_EXITED
&& last_status.kind != TARGET_WAITKIND_SIGNALLED)
{
- current_inferior->last_resume_kind = resume_stop;
- current_inferior->last_status = last_status;
+ current_thread->last_resume_kind = resume_stop;
+ current_thread->last_status = last_status;
}
+ else
+ mourn_inferior (find_process_pid (ptid_get_pid (last_ptid)));
return signal_pid;
}
whichever we were told to attach to. */
signal_pid = pid;
- /* Clear this so the backend doesn't get confused, thinking
- CONT_THREAD died, and it needs to resume all threads. */
- cont_thread = null_ptid;
-
if (!non_stop)
{
last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0);
&& last_status.value.sig == GDB_SIGNAL_STOP)
last_status.value.sig = GDB_SIGNAL_TRAP;
- current_inferior->last_resume_kind = resume_stop;
- current_inferior->last_status = last_status;
+ current_thread->last_resume_kind = resume_stop;
+ current_thread->last_status = last_status;
}
return 0;
PBUFSIZ - 2) + 1;
}
-/* Handle btrace enabling. */
+/* Handle btrace enabling in BTS format. */
static const char *
-handle_btrace_enable (struct thread_info *thread)
+handle_btrace_enable_bts (struct thread_info *thread)
{
if (thread->btrace != NULL)
return "E.Btrace already enabled.";
- thread->btrace = target_enable_btrace (thread->entry.id);
+ current_btrace_conf.format = BTRACE_FORMAT_BTS;
+ thread->btrace = target_enable_btrace (thread->entry.id,
+ ¤t_btrace_conf);
if (thread->btrace == NULL)
return "E.Could not enable btrace.";
const char *err;
char *op;
- if (strncmp ("Qbtrace:", own_buf, strlen ("Qbtrace:")) != 0)
+ if (!startswith (own_buf, "Qbtrace:"))
return 0;
op = own_buf + strlen ("Qbtrace:");
- if (!target_supports_btrace ())
- {
- strcpy (own_buf, "E.Target does not support branch tracing.");
- return -1;
- }
-
if (ptid_equal (general_thread, null_ptid)
|| ptid_equal (general_thread, minus_one_ptid))
{
err = NULL;
if (strcmp (op, "bts") == 0)
- err = handle_btrace_enable (thread);
+ err = handle_btrace_enable_bts (thread);
else if (strcmp (op, "off") == 0)
err = handle_btrace_disable (thread);
else
return 1;
}
+/* Handle the "Qbtrace-conf" packet. */
+
+static int
+handle_btrace_conf_general_set (char *own_buf)
+{
+ struct thread_info *thread;
+ char *op;
+
+ if (!startswith (own_buf, "Qbtrace-conf:"))
+ return 0;
+
+ op = own_buf + strlen ("Qbtrace-conf:");
+
+ if (ptid_equal (general_thread, null_ptid)
+ || ptid_equal (general_thread, minus_one_ptid))
+ {
+ strcpy (own_buf, "E.Must select a single thread.");
+ return -1;
+ }
+
+ thread = find_thread_ptid (general_thread);
+ if (thread == NULL)
+ {
+ strcpy (own_buf, "E.No such thread.");
+ return -1;
+ }
+
+ if (startswith (op, "bts:size="))
+ {
+ unsigned long size;
+ char *endp = NULL;
+
+ errno = 0;
+ size = strtoul (op + strlen ("bts:size="), &endp, 16);
+ if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX)
+ {
+ strcpy (own_buf, "E.Bad size value.");
+ return -1;
+ }
+
+ current_btrace_conf.bts.size = (unsigned int) size;
+ }
+ else
+ {
+ strcpy (own_buf, "E.Bad Qbtrace configuration option.");
+ return -1;
+ }
+
+ write_ok (own_buf);
+ return 1;
+}
+
/* Handle all of the extended 'Q' packets. */
static void
handle_general_set (char *own_buf)
{
- if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0)
+ if (startswith (own_buf, "QPassSignals:"))
{
int numsigs = (int) GDB_SIGNAL_LAST, i;
const char *p = own_buf + strlen ("QPassSignals:");
return;
}
- if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0)
+ if (startswith (own_buf, "QProgramSignals:"))
{
int numsigs = (int) GDB_SIGNAL_LAST, i;
const char *p = own_buf + strlen ("QProgramSignals:");
return;
}
- if (strncmp (own_buf, "QNonStop:", 9) == 0)
+ if (startswith (own_buf, "QNonStop:"))
{
char *mode = own_buf + 9;
int req = -1;
- char *req_str;
+ const char *req_str;
if (strcmp (mode, "0") == 0)
req = 0;
return;
}
- if (strncmp ("QDisableRandomization:", own_buf,
- strlen ("QDisableRandomization:")) == 0)
+ if (startswith (own_buf, "QDisableRandomization:"))
{
char *packet = own_buf + strlen ("QDisableRandomization:");
ULONGEST setting;
&& handle_tracepoint_general_set (own_buf))
return;
- if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0)
+ if (startswith (own_buf, "QAgent:"))
{
char *mode = own_buf + strlen ("QAgent:");
int req = 0;
if (handle_btrace_general_set (own_buf))
return;
+ if (handle_btrace_conf_general_set (own_buf))
+ return;
+
/* Otherwise we didn't know what packet it was. Say we didn't
understand it. */
own_buf[0] = 0;
}
else if (strcmp (mon, "set debug-hw-points 1") == 0)
{
- debug_hw_points = 1;
+ show_debug_regs = 1;
monitor_output ("H/W point debugging output enabled.\n");
}
else if (strcmp (mon, "set debug-hw-points 0") == 0)
{
- debug_hw_points = 0;
+ show_debug_regs = 0;
monitor_output ("H/W point debugging output disabled.\n");
}
else if (strcmp (mon, "set remote-debug 1") == 0)
remote_debug = 0;
monitor_output ("Protocol debug output disabled.\n");
}
- else if (strncmp (mon, "set debug-format ",
- sizeof ("set debug-format ") - 1) == 0)
+ else if (startswith (mon, "set debug-format "))
{
char *error_msg
= parse_debug_format_options (mon + sizeof ("set debug-format ") - 1,
return (*the_target->read_auxv) (offset, readbuf, len);
}
+/* Handle qXfer:exec-file:read. */
+
+static int
+handle_qxfer_exec_file (const char *const_annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ char *file;
+ ULONGEST pid;
+ int total_len;
+
+ if (the_target->pid_to_exec_file == NULL || writebuf != NULL)
+ return -2;
+
+ if (const_annex[0] == '\0')
+ {
+ if (current_thread == NULL)
+ return -1;
+
+ pid = pid_of (current_thread);
+ }
+ else
+ {
+ char *annex = alloca (strlen (const_annex) + 1);
+
+ strcpy (annex, const_annex);
+ annex = unpack_varlen_hex (annex, &pid);
+
+ if (annex[0] != '\0')
+ return -1;
+ }
+
+ if (pid <= 0)
+ return -1;
+
+ file = (*the_target->pid_to_exec_file) (pid);
+ if (file == NULL)
+ return -1;
+
+ total_len = strlen (file);
+
+ if (offset > total_len)
+ return -1;
+
+ if (offset + len > total_len)
+ len = total_len - offset;
+
+ memcpy (readbuf, file + offset, len);
+ return len;
+}
+
/* Handle qXfer:features:read. */
static int
return len;
}
+/* Handle qXfer:btrace-conf:read. */
+
+static int
+handle_qxfer_btrace_conf (const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ static struct buffer cache;
+ struct thread_info *thread;
+ int result;
+
+ if (the_target->read_btrace_conf == NULL || writebuf != NULL)
+ return -2;
+
+ if (annex[0] != '\0' || !target_running ())
+ return -1;
+
+ if (ptid_equal (general_thread, null_ptid)
+ || ptid_equal (general_thread, minus_one_ptid))
+ {
+ strcpy (own_buf, "E.Must select a single thread.");
+ return -3;
+ }
+
+ thread = find_thread_ptid (general_thread);
+ if (thread == NULL)
+ {
+ strcpy (own_buf, "E.No such thread.");
+ return -3;
+ }
+
+ if (thread->btrace == NULL)
+ {
+ strcpy (own_buf, "E.Btrace not enabled.");
+ return -3;
+ }
+
+ if (offset == 0)
+ {
+ buffer_free (&cache);
+
+ result = target_read_btrace_conf (thread->btrace, &cache);
+ if (result != 0)
+ {
+ memcpy (own_buf, cache.buffer, cache.used_size);
+ return -3;
+ }
+ }
+ else if (offset > cache.used_size)
+ {
+ buffer_free (&cache);
+ return -3;
+ }
+
+ if (len > cache.used_size - offset)
+ len = cache.used_size - offset;
+
+ memcpy (readbuf, cache.buffer + offset, len);
+
+ return len;
+}
+
static const struct qxfer qxfer_packets[] =
{
{ "auxv", handle_qxfer_auxv },
{ "btrace", handle_qxfer_btrace },
+ { "btrace-conf", handle_qxfer_btrace_conf },
+ { "exec-file", handle_qxfer_exec_file},
{ "fdpic", handle_qxfer_fdpic},
{ "features", handle_qxfer_features },
{ "libraries", handle_qxfer_libraries },
char *annex;
char *offset;
- if (strncmp (own_buf, "qXfer:", 6) != 0)
+ if (!startswith (own_buf, "qXfer:"))
return 0;
/* Grab the object, r/w and annex. */
return (unsigned long long) crc;
}
+/* Add supported btrace packets to BUF. */
+
+static void
+supported_btrace_packets (char *buf)
+{
+ if (target_supports_btrace (BTRACE_FORMAT_BTS))
+ {
+ strcat (buf, ";Qbtrace:bts+");
+ strcat (buf, ";Qbtrace-conf:bts:size+");
+ }
+ else
+ return;
+
+ strcat (buf, ";Qbtrace:off+");
+ strcat (buf, ";qXfer:btrace:read+");
+ strcat (buf, ";qXfer:btrace-conf:read+");
+}
+
/* Handle all of the extended 'q' packets. */
void
}
/* Protocol features query. */
- if (strncmp ("qSupported", own_buf, 10) == 0
+ if (startswith (own_buf, "qSupported")
&& (own_buf[10] == ':' || own_buf[10] == '\0'))
{
char *p = &own_buf[10];
/* GDB supports relocate instruction requests. */
gdb_supports_qRelocInsn = 1;
}
+ else if (strcmp (p, "swbreak+") == 0)
+ {
+ /* GDB wants us to report whether a trap is caused
+ by a software breakpoint and for us to handle PC
+ adjustment if necessary on this target. */
+ if (target_supports_stopped_by_sw_breakpoint ())
+ swbreak_feature = 1;
+ }
+ else if (strcmp (p, "hwbreak+") == 0)
+ {
+ /* GDB wants us to report whether a trap is caused
+ by a hardware breakpoint. */
+ if (target_supports_stopped_by_hw_breakpoint ())
+ hwbreak_feature = 1;
+ }
+ else if (strcmp (p, "fork-events+") == 0)
+ {
+ /* GDB supports and wants fork events if possible. */
+ if (target_supports_fork_events ())
+ report_fork_events = 1;
+ }
+ else if (strcmp (p, "vfork-events+") == 0)
+ {
+ /* GDB supports and wants vfork events if possible. */
+ if (target_supports_vfork_events ())
+ report_vfork_events = 1;
+ }
else
target_process_qsupported (p);
if (target_supports_multi_process ())
strcat (own_buf, ";multiprocess+");
+ if (target_supports_fork_events ())
+ strcat (own_buf, ";fork-events+");
+
+ if (target_supports_vfork_events ())
+ strcat (own_buf, ";vfork-events+");
+
if (target_supports_non_stop ())
strcat (own_buf, ";QNonStop+");
}
/* Support target-side breakpoint conditions and commands. */
- strcat (own_buf, ";ConditionalBreakpoints+");
+ if (target_supports_conditional_breakpoints ())
+ strcat (own_buf, ";ConditionalBreakpoints+");
strcat (own_buf, ";BreakpointCommands+");
if (target_supports_agent ())
strcat (own_buf, ";QAgent+");
- if (target_supports_btrace ())
- {
- strcat (own_buf, ";Qbtrace:bts+");
- strcat (own_buf, ";Qbtrace:off+");
- strcat (own_buf, ";qXfer:btrace:read+");
- }
+ supported_btrace_packets (own_buf);
+
+ if (target_supports_stopped_by_sw_breakpoint ())
+ strcat (own_buf, ";swbreak+");
+
+ if (target_supports_stopped_by_hw_breakpoint ())
+ strcat (own_buf, ";hwbreak+");
+
+ if (the_target->pid_to_exec_file != NULL)
+ strcat (own_buf, ";qXfer:exec-file:read+");
+
+ /* Reinitialize the target as needed for the new connection. */
+ target_handle_new_gdb_connection ();
return;
}
/* Thread-local storage support. */
if (the_target->get_tls_address != NULL
- && strncmp ("qGetTLSAddr:", own_buf, 12) == 0)
+ && startswith (own_buf, "qGetTLSAddr:"))
{
char *p = own_buf + 12;
CORE_ADDR parts[2], address = 0;
/* Windows OS Thread Information Block address support. */
if (the_target->get_tib_address != NULL
- && strncmp ("qGetTIBAddr:", own_buf, 12) == 0)
+ && startswith (own_buf, "qGetTIBAddr:"))
{
char *annex;
int n;
}
/* Handle "monitor" commands. */
- if (strncmp ("qRcmd,", own_buf, 6) == 0)
+ if (startswith (own_buf, "qRcmd,"))
{
char *mon = malloc (PBUFSIZ);
int len = strlen (own_buf + 6);
return;
}
- if (strncmp ("qSearch:memory:", own_buf,
- sizeof ("qSearch:memory:") - 1) == 0)
+ if (startswith (own_buf, "qSearch:memory:"))
{
require_running (own_buf);
handle_search_memory (own_buf, packet_len);
}
if (strcmp (own_buf, "qAttached") == 0
- || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0)
+ || startswith (own_buf, "qAttached:"))
{
struct process_info *process;
return;
}
- if (strncmp ("qCRC:", own_buf, 5) == 0)
+ if (startswith (own_buf, "qCRC:"))
{
/* CRC check (compare-section). */
char *comma;
if (i < n)
resume_info[i] = default_action;
- /* `cont_thread' is still used in occasional places in the backend,
- to implement single-thread scheduler-locking. Doesn't make sense
- to set it if we see a stop request, or a wildcard action (one
- with '-1' (all threads), or 'pPID.-1' (all threads of PID)). */
- if (n == 1
- && !(ptid_equal (resume_info[0].thread, minus_one_ptid)
- || ptid_get_lwp (resume_info[0].thread) == -1)
- && resume_info[0].kind != resume_stop)
- cont_thread = resume_info[0].thread;
- else
- cont_thread = minus_one_ptid;
- set_desired_inferior (0);
+ set_desired_thread (0);
resume (resume_info, n);
free (resume_info);
if (last_status.kind != TARGET_WAITKIND_EXITED
&& last_status.kind != TARGET_WAITKIND_SIGNALLED
&& last_status.kind != TARGET_WAITKIND_NO_RESUMED)
- current_inferior->last_status = last_status;
+ current_thread->last_status = last_status;
/* From the client's perspective, all-stop mode always stops all
threads implicitly (and the target backend has already done
{
if (!disable_packet_vCont)
{
- if (strncmp (own_buf, "vCont;", 6) == 0)
+ if (startswith (own_buf, "vCont;"))
{
require_running (own_buf);
handle_v_cont (own_buf);
return;
}
- if (strncmp (own_buf, "vCont?", 6) == 0)
+ if (startswith (own_buf, "vCont?"))
{
strcpy (own_buf, "vCont;c;C;s;S;t");
if (target_supports_range_stepping ())
}
}
- if (strncmp (own_buf, "vFile:", 6) == 0
+ if (startswith (own_buf, "vFile:")
&& handle_vFile (own_buf, packet_len, new_packet_len))
return;
- if (strncmp (own_buf, "vAttach;", 8) == 0)
+ if (startswith (own_buf, "vAttach;"))
{
if ((!extended_protocol || !multi_process) && target_running ())
{
return;
}
- if (strncmp (own_buf, "vRun;", 5) == 0)
+ if (startswith (own_buf, "vRun;"))
{
if ((!extended_protocol || !multi_process) && target_running ())
{
return;
}
- if (strncmp (own_buf, "vKill;", 6) == 0)
+ if (startswith (own_buf, "vKill;"))
{
if (!target_running ())
{
return;
}
-/* Resume inferior and wait for another event. In non-stop mode,
+/* Resume thread and wait for another event. In non-stop mode,
don't really wait here, but return immediatelly to the event
loop. */
static void
int n = 0;
int valid_cont_thread;
- set_desired_inferior (0);
+ set_desired_thread (0);
valid_cont_thread = (!ptid_equal (cont_thread, null_ptid)
&& !ptid_equal (cont_thread, minus_one_ptid));
/* GDB assumes the current thread is the thread we're
reporting the status for. */
general_thread = thread->id;
- set_desired_inferior (1);
+ set_desired_thread (1);
gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE);
prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status);
gdbserver_version (void)
{
printf ("GNU gdbserver %s%s\n"
- "Copyright (C) 2014 Free Software Foundation, Inc.\n"
+ "Copyright (C) 2015 Free Software Foundation, Inc.\n"
"gdbserver is free software, covered by the "
"GNU General Public License.\n"
"This gdbserver was configured as \"%s\"\n",
"\tgdbserver [OPTIONS] --attach COMM PID\n"
"\tgdbserver [OPTIONS] --multi COMM\n"
"\n"
- "COMM may either be a tty device (for serial debugging), or \n"
- "HOST:PORT to listen for a TCP connection.\n"
+ "COMM may either be a tty device (for serial debugging),\n"
+ "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n"
+ "stdin/stdout of gdbserver.\n"
+ "PROG is the executable program. ARGS are arguments passed to inferior.\n"
+ "PID is the process ID to attach to, when --attach is specified.\n"
+ "\n"
+ "Operating modes:\n"
+ "\n"
+ " --attach Attach to running process PID.\n"
+ " --multi Start server without a specific program, and\n"
+ " only quit when explicitly commanded.\n"
+ " --once Exit after the first connection has closed.\n"
+ " --help Print this message and then exit.\n"
+ " --version Display version information and exit.\n"
+ "\n"
+ "Other options:\n"
+ "\n"
+ " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"
+ " --disable-randomization\n"
+ " Run PROG with address space randomization disabled.\n"
+ " --no-disable-randomization\n"
+ " Don't disable address space randomization when\n"
+ " starting PROG.\n"
+ "\n"
+ "Debug options:\n"
"\n"
- "Options:\n"
" --debug Enable general debugging output.\n"
" --debug-format=opt1[,opt2,...]\n"
" Specify extra content in debugging output.\n"
" none\n"
" timestamp\n"
" --remote-debug Enable remote protocol debugging output.\n"
- " --version Display version information and exit.\n"
- " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"
- " --once Exit after the first connection has "
- "closed.\n");
+ " --disable-packet=opt1[,opt2,...]\n"
+ " Disable support for RSP packets or features.\n"
+ " Options:\n"
+ " vCont, Tthread, qC, qfThreadInfo and \n"
+ " threads (disable all threading packets).\n"
+ "\n"
+ "For more information, consult the GDB manual (available as on-line \n"
+ "info or a printed manual).\n");
if (REPORT_BUGS_TO[0] && stream == stdout)
fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO);
}
for_each_inferior (&all_processes, detach_or_kill_inferior_callback);
}
-int
-main (int argc, char *argv[])
+/* Value that will be passed to exit(3) when gdbserver exits. */
+static int exit_code;
+
+/* Cleanup version of detach_or_kill_for_exit. */
+
+static void
+detach_or_kill_for_exit_cleanup (void *ignore)
+{
+
+ TRY
+ {
+ detach_or_kill_for_exit ();
+ }
+
+ CATCH (exception, RETURN_MASK_ALL)
+ {
+ fflush (stdout);
+ fprintf (stderr, "Detach or kill failed: %s\n", exception.message);
+ exit_code = 1;
+ }
+ END_CATCH
+}
+
+/* Main function. This is called by the real "main" function,
+ wrapped in a TRY_CATCH that handles any uncaught exceptions. */
+
+static void ATTRIBUTE_NORETURN
+captured_main (int argc, char *argv[])
{
int bad_attach;
int pid;
}
else if (strcmp (*next_arg, "--debug") == 0)
debug_threads = 1;
- else if (strncmp (*next_arg,
- "--debug-format=",
- sizeof ("--debug-format=") - 1) == 0)
+ else if (startswith (*next_arg, "--debug-format="))
{
char *error_msg
= parse_debug_format_options ((*next_arg)
gdbserver_show_disableable (stdout);
exit (0);
}
- else if (strncmp (*next_arg,
- "--disable-packet=",
- sizeof ("--disable-packet=") - 1) == 0)
+ else if (startswith (*next_arg, "--disable-packet="))
{
char *packets, *tok;
continue;
}
- if (setjmp (toplevel))
- {
- fprintf (stderr, "Exiting\n");
- exit (1);
- }
-
port = *next_arg;
next_arg++;
if (port == NULL || (!attach && !multi_mode && *next_arg == NULL))
last_status.value.integer = 0;
last_ptid = minus_one_ptid;
}
+ make_cleanup (detach_or_kill_for_exit_cleanup, NULL);
initialize_notif ();
shared library event" notice on gdb side. */
dlls_changed = 0;
- if (setjmp (toplevel))
- {
- /* If something fails and longjmps while detaching or killing
- inferiors, we'd end up here again, stuck in an infinite loop
- trap. Be sure that if that happens, we exit immediately
- instead. */
- if (setjmp (toplevel) == 0)
- detach_or_kill_for_exit ();
- else
- fprintf (stderr, "Detach or kill failed. Exiting\n");
- exit (1);
- }
-
if (last_status.kind == TARGET_WAITKIND_EXITED
|| last_status.kind == TARGET_WAITKIND_SIGNALLED)
was_running = 0;
was_running = 1;
if (!was_running && !multi_mode)
- {
- fprintf (stderr, "No program to debug. GDBserver exiting.\n");
- exit (1);
- }
+ error ("No program to debug");
while (1)
{
+
noack_mode = 0;
multi_process = 0;
+ report_fork_events = 0;
+ report_vfork_events = 0;
/* Be sure we're out of tfind mode. */
current_traceframe = -1;
+ cont_thread = null_ptid;
+ swbreak_feature = 0;
+ hwbreak_feature = 0;
remote_open (port);
- if (setjmp (toplevel) != 0)
+ TRY
{
- /* An error occurred. */
- if (response_needed)
+ /* Wait for events. This will return when all event sources
+ are removed from the event loop. */
+ start_event_loop ();
+
+ /* If an exit was requested (using the "monitor exit"
+ command), terminate now. The only other way to get
+ here is for getpkt to fail; close the connection
+ and reopen it at the top of the loop. */
+
+ if (exit_requested || run_once)
+ throw_quit ("Quit");
+
+ fprintf (stderr,
+ "Remote side has terminated connection. "
+ "GDBserver will reopen the connection.\n");
+
+ /* Get rid of any pending statuses. An eventual reconnection
+ (by the same GDB instance or another) will refresh all its
+ state from scratch. */
+ discard_queued_stop_replies (-1);
+ for_each_inferior (&all_threads,
+ clear_pending_status_callback);
+
+ if (tracing)
{
- write_enn (own_buf);
- putpkt (own_buf);
+ if (disconnected_tracing)
+ {
+ /* Try to enable non-stop/async mode, so we we can
+ both wait for an async socket accept, and handle
+ async target events simultaneously. There's also
+ no point either in having the target always stop
+ all threads, when we're going to pass signals
+ down without informing GDB. */
+ if (!non_stop)
+ {
+ if (start_non_stop (1))
+ non_stop = 1;
+
+ /* Detaching implicitly resumes all threads;
+ simply disconnecting does not. */
+ }
+ }
+ else
+ {
+ fprintf (stderr,
+ "Disconnected tracing disabled; "
+ "stopping trace run.\n");
+ stop_tracing ();
+ }
}
}
-
- /* Wait for events. This will return when all event sources are
- removed from the event loop. */
- start_event_loop ();
-
- /* If an exit was requested (using the "monitor exit" command),
- terminate now. The only other way to get here is for
- getpkt to fail; close the connection and reopen it at the
- top of the loop. */
-
- if (exit_requested || run_once)
+ CATCH (exception, RETURN_MASK_ERROR)
{
- /* If something fails and longjmps while detaching or
- killing inferiors, we'd end up here again, stuck in an
- infinite loop trap. Be sure that if that happens, we
- exit immediately instead. */
- if (setjmp (toplevel) == 0)
- {
- detach_or_kill_for_exit ();
- exit (0);
- }
- else
+ if (response_needed)
{
- fprintf (stderr, "Detach or kill failed. Exiting\n");
- exit (1);
+ write_enn (own_buf);
+ putpkt (own_buf);
}
}
+ END_CATCH
+ }
+}
- fprintf (stderr,
- "Remote side has terminated connection. "
- "GDBserver will reopen the connection.\n");
+/* Main function. */
- /* Get rid of any pending statuses. An eventual reconnection
- (by the same GDB instance or another) will refresh all its
- state from scratch. */
- discard_queued_stop_replies (-1);
- for_each_inferior (&all_threads, clear_pending_status_callback);
+int
+main (int argc, char *argv[])
+{
- if (tracing)
+ TRY
+ {
+ captured_main (argc, argv);
+ }
+ CATCH (exception, RETURN_MASK_ALL)
+ {
+ if (exception.reason == RETURN_ERROR)
{
- if (disconnected_tracing)
- {
- /* Try to enable non-stop/async mode, so we we can both
- wait for an async socket accept, and handle async
- target events simultaneously. There's also no point
- either in having the target always stop all threads,
- when we're going to pass signals down without
- informing GDB. */
- if (!non_stop)
- {
- if (start_non_stop (1))
- non_stop = 1;
-
- /* Detaching implicitly resumes all threads; simply
- disconnecting does not. */
- }
- }
- else
- {
- fprintf (stderr,
- "Disconnected tracing disabled; stopping trace run.\n");
- stop_tracing ();
- }
+ fflush (stdout);
+ fprintf (stderr, "%s\n", exception.message);
+ fprintf (stderr, "Exiting\n");
+ exit_code = 1;
}
+
+ exit (exit_code);
}
+ END_CATCH
+
+ gdb_assert_not_reached ("captured_main should never return");
}
/* Skip PACKET until the next semi-colon (or end of string). */
if (!add_breakpoint_condition (bp, &dataptr))
skip_to_semicolon (&dataptr);
}
- else if (strncmp (dataptr, "cmds:", strlen ("cmds:")) == 0)
+ else if (startswith (dataptr, "cmds:"))
{
dataptr += strlen ("cmds:");
if (debug_threads)
last_status.value.integer = 0;
last_ptid = pid_to_ptid (pid);
- current_inferior = NULL;
+ current_thread = NULL;
}
else
{
}
general_thread = thread_id;
- set_desired_inferior (1);
+ set_desired_thread (1);
}
else if (own_buf[1] == 'c')
cont_thread = thread_id;
{
struct regcache *regcache;
- set_desired_inferior (1);
- regcache = get_thread_regcache (current_inferior, 1);
+ set_desired_thread (1);
+ regcache = get_thread_regcache (current_thread, 1);
registers_to_string (regcache, own_buf);
}
break;
{
struct regcache *regcache;
- set_desired_inferior (1);
- regcache = get_thread_regcache (current_inferior, 1);
+ set_desired_thread (1);
+ regcache = get_thread_regcache (current_thread, 1);
registers_from_string (regcache, &own_buf[1]);
write_ok (own_buf);
}
if (process_serial_event () < 0)
return -1;
- /* Be sure to not change the selected inferior behind GDB's back.
+ /* Be sure to not change the selected thread behind GDB's back.
Important in the non-stop mode asynchronous protocol. */
- set_desired_inferior (1);
+ set_desired_thread (1);
return 0;
}
/* We're reporting this thread as stopped. Update its
"want-stopped" state to what the client wants, until it
gets a new resume action. */
- current_inferior->last_resume_kind = resume_stop;
- current_inferior->last_status = last_status;
+ current_thread->last_resume_kind = resume_stop;
+ current_thread->last_status = last_status;
}
if (forward_event)
}
}
- /* Be sure to not change the selected inferior behind GDB's back.
+ /* Be sure to not change the selected thread behind GDB's back.
Important in the non-stop mode asynchronous protocol. */
- set_desired_inferior (1);
+ set_desired_thread (1);
return 0;
}
projects / deliverable / binutils-gdb.git / blobdiff