From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:44804) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4EXV-000410-9o for qemu-devel@nongnu.org; Wed, 22 Aug 2012 13:16:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T4EXT-0002is-RC for qemu-devel@nongnu.org; Wed, 22 Aug 2012 13:16:21 -0400 Received: from mail-lb0-f173.google.com ([209.85.217.173]:41239) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4EXT-0002ha-Jb for qemu-devel@nongnu.org; Wed, 22 Aug 2012 13:16:19 -0400 Received: by lbbgm13 with SMTP id gm13so699221lbb.4 for ; Wed, 22 Aug 2012 10:16:18 -0700 (PDT) From: Max Filippov Date: Wed, 22 Aug 2012 21:15:37 +0400 Message-Id: <1345655737-2476-1-git-send-email-jcmvbkbc@gmail.com> Subject: [Qemu-devel] [PATCH for-1.2] target-xtensa: return EINVAL for unimplemented simcalls List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Max Filippov This prevents guest from proceeding with uninitialised garbage returned from unimplemented simcalls. Signed-off-by: Max Filippov --- target-xtensa/xtensa-semi.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/target-xtensa/xtensa-semi.c b/target-xtensa/xtensa-semi.c index 1c8a19e..9afa99d 100644 --- a/target-xtensa/xtensa-semi.c +++ b/target-xtensa/xtensa-semi.c @@ -218,6 +218,8 @@ void HELPER(simcall)(CPUXtensaState *env) default: qemu_log("%s(%d): not implemented\n", __func__, regs[2]); + regs[2] = -1; + regs[3] = EINVAL; break; } } -- 1.7.7.6