[PATCH v2 13/29] all-stop/synchronous RSP support thread-exit events

[Pedro Alves <pedro@palves.net>]

Currently, GDB does not understand the THREAD_EXITED stop reply in
remote all-stop mode.  There's no good reason for this, it just
happened that THREAD_EXITED was only ever reported in non-stop mode so
far.  This patch teaches GDB to parse that event in all-stop RSP too.
There is no need to add a qSupported feature for this, because the
server won't send a THREAD_EXITED event unless GDB explicitly asks for
it, with QThreadEvents, or with the GDB_TO_EXIT QThreadOptions option
added in the next patch.

Change-Id: Ide5d12391adf432779fe4c79526801c4a5630966
---
 gdb/remote.c        | 5 +++--
 gdbserver/server.cc | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gdb/remote.c b/gdb/remote.c
index 18c31c3e811..090ea47aa38 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -8187,7 +8187,8 @@ remote_target::process_stop_reply (struct stop_reply *stop_reply,
       && status->kind () != TARGET_WAITKIND_NO_RESUMED)
     {
       /* Expedited registers.  */
-      if (!stop_reply->regcache.empty ())
+      if (status->kind () != TARGET_WAITKIND_THREAD_EXITED
+	  && !stop_reply->regcache.empty ())
 	{
 	  struct regcache *regcache
 	    = get_thread_arch_regcache (this, ptid, stop_reply->arch);
@@ -8373,7 +8374,7 @@ remote_target::wait_as (ptid_t ptid, target_waitstatus *status,
 	     again.  Keep waiting for events.  */
 	  rs->waiting_for_stop_reply = 1;
 	  break;
-	case 'N': case 'T': case 'S': case 'X': case 'W':
+	case 'N': case 'T': case 'S': case 'X': case 'W': case 'w':
 	  {
 	    /* There is a stop reply to handle.  */
 	    rs->waiting_for_stop_reply = 0;
diff --git a/gdbserver/server.cc b/gdbserver/server.cc
index 3526e1d000e..75a23e2c692 100644
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -3060,6 +3060,7 @@ resume (struct thread_resume *actions, size_t num_actions)
 
       if (cs.last_status.kind () != TARGET_WAITKIND_EXITED
 	  && cs.last_status.kind () != TARGET_WAITKIND_SIGNALLED
+	  && cs.last_status.kind () != TARGET_WAITKIND_THREAD_EXITED
 	  && cs.last_status.kind () != TARGET_WAITKIND_NO_RESUMED)
 	current_thread->last_status = cs.last_status;
 
-- 
2.36.0