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all-stop/synchronous RSP support thread-exit events

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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_THREAD_OPTION_EXIT
QThreadOptions option added in the next patch.

Change-Id: Ide5d12391adf432779fe4c79526801c4a5630966
This commit is contained in:
Pedro Alves 2022-04-04 21:12:03 +01:00
parent 6bd50ebd29
commit 00b0dc819d
2 changed files with 7 additions and 1 deletions
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7
gdb/remote.c
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@ -8415,6 +8415,11 @@ remote_target::process_stop_reply (struct stop_reply *stop_reply,
/* Expedited registers. */
if (!stop_reply->regcache.empty ())
{
/* 'w' stop replies don't cary expedited registers (which
wouldn't make any sense for a thread that is gone
already). */
gdb_assert (status->kind () != TARGET_WAITKIND_THREAD_EXITED);
struct regcache *regcache
= get_thread_arch_regcache (this, ptid, stop_reply->arch);
@ -8599,7 +8604,7 @@ 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;

1
gdbserver/server.cc
View File

@ -3045,6 +3045,7 @@ 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;