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* win32-low.c (attaching): New global.

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(win32_create_inferior): Clear the `attaching' global.
	(win32_attach): Set the `attaching' global.
	(get_child_debug_event) [_WIN32_WCE]: Stop the inferior when
	attaching.  Only set a breakpoint at the entry point if not
	attaching.
This commit is contained in:
Pedro Alves 2007-12-03 01:42:06 +00:00
parent 311de42358
commit d97903b290
2 changed files with 63 additions and 11 deletions
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9
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,12 @@
2007-12-03 Pedro Alves <pedro_alves@portugalmail.pt>
* win32-low.c (attaching): New global.
(win32_create_inferior): Clear the `attaching' global.
(win32_attach): Set the `attaching' global.
(get_child_debug_event) [_WIN32_WCE]: Stop the inferior when
attaching. Only set a breakpoint at the entry point if not
attaching.
2007-12-03 Pedro Alves <pedro_alves@portugalmail.pt>
* server.c (main): Don't report dll events on the initial

65
gdb/gdbserver/win32-low.c
View File

@ -65,6 +65,7 @@
int using_threads = 1;
/* Globals. */
static int attaching = 0;
static HANDLE current_process_handle = NULL;
static DWORD current_process_id = 0;
static enum target_signal last_sig = TARGET_SIGNAL_0;
@ -498,6 +499,9 @@ win32_create_inferior (char *program, char **program_args)
PROCESS_INFORMATION pi;
DWORD err;
/* win32_wait needs to know we're not attaching. */
attaching = 0;
if (!program)
error ("No executable specified, specify executable to debug.\n");
@ -600,6 +604,8 @@ win32_attach (unsigned long pid)
if (DebugSetProcessKillOnExit != NULL)
DebugSetProcessKillOnExit (FALSE);
/* win32_wait needs to know we're attaching. */
attaching = 1;
current_process_handle = h;
current_process_id = pid;
do_initial_child_stuff (pid);
@ -1346,11 +1352,44 @@ get_child_debug_event (struct target_waitstatus *ourstatus)
goto gotevent;
}
/* Keep the wait time low enough for confortable remote
interruption, but high enough so gdbserver doesn't become a
bottleneck. */
if (!WaitForDebugEvent (&current_event, 250))
return 0;
#ifndef _WIN32_WCE
attaching = 0;
#else
if (attaching)
{
/* WinCE doesn't set an initial breakpoint automatically. To
stop the inferior, we flush all currently pending debug
events -- the thread list and the dll list are always
reported immediatelly without delay, then, we suspend all
threads and pretend we saw a trap at the current PC of the
main thread.
Contrary to desktop Windows, Windows CE *does* report the dll
names on LOAD_DLL_DEBUG_EVENTs resulting from a
DebugActiveProcess call. This limits the way we can detect
if all the dlls have already been reported. If we get a real
debug event before leaving attaching, the worst that will
happen is the user will see a spurious breakpoint. */
current_event.dwDebugEventCode = 0;
if (!WaitForDebugEvent (&current_event, 0))
{
OUTMSG2(("no attach events left\n"));
fake_breakpoint_event ();
attaching = 0;
}
else
OUTMSG2(("got attach event\n"));
}
else
#endif
{
/* Keep the wait time low enough for confortable remote
interruption, but high enough so gdbserver doesn't become a
bottleneck. */
if (!WaitForDebugEvent (&current_event, 250))
return 0;
}
gotevent:
@ -1398,12 +1437,16 @@ get_child_debug_event (struct target_waitstatus *ourstatus)
ourstatus->value.related_pid = current_event.dwThreadId;
#ifdef _WIN32_WCE
/* Windows CE doesn't set the initial breakpoint automatically
like the desktop versions of Windows do. We add it explicitly
here. It will be removed as soon as it is hit. */
set_breakpoint_at ((CORE_ADDR) (long) current_event.u
.CreateProcessInfo.lpStartAddress,
delete_breakpoint_at);
if (!attaching)
{
/* Windows CE doesn't set the initial breakpoint
automatically like the desktop versions of Windows do.
We add it explicitly here. It will be removed as soon as
it is hit. */
set_breakpoint_at ((CORE_ADDR) (long) current_event.u
.CreateProcessInfo.lpStartAddress,
delete_breakpoint_at);
}
#endif
break;