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authorPedro Alves <pedro@codesourcery.com>2007-12-03 01:42:06 +0000
committerPedro Alves <pedro@codesourcery.com>2007-12-03 01:42:06 +0000
commit7aa0cbeef48e4bf3204db11ad6c1ac9839efddb8 (patch)
treeddbc76f3530e2c06e94b6201ee5400b7ec7f0ad3 /gdb/gdbserver/win32-low.c
parent9db16fb5dbf4e4649f61ebd9cc7101fc214575a2 (diff)
downloadgdb-7aa0cbeef48e4bf3204db11ad6c1ac9839efddb8.tar.gz
* 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.
Diffstat (limited to 'gdb/gdbserver/win32-low.c')
-rw-r--r--gdb/gdbserver/win32-low.c65
1 files changed, 54 insertions, 11 deletions
diff --git a/gdb/gdbserver/win32-low.c b/gdb/gdbserver/win32-low.c
index 3ff7c17e2bf..1c81804c2cf 100644
--- a/gdb/gdbserver/win32-low.c
+++ b/gdb/gdbserver/win32-low.c
@@ -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;