From patchwork Wed Aug 22 18:03:35 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Filippov X-Patchwork-Id: 179354 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D086D2C008B for ; Thu, 23 Aug 2012 04:04:02 +1000 (EST) Received: from localhost ([::1]:46123 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4FHc-0005AM-Oh for incoming@patchwork.ozlabs.org; Wed, 22 Aug 2012 14:04:00 -0400 Received: from eggs.gnu.org ([208.118.235.92]:33502) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4FHP-00059u-OK for qemu-devel@nongnu.org; Wed, 22 Aug 2012 14:03:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T4FHN-0000Ck-Tl for qemu-devel@nongnu.org; Wed, 22 Aug 2012 14:03:47 -0400 Received: from mail-lb0-f173.google.com ([209.85.217.173]:61487) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4FHN-0000Cf-M6 for qemu-devel@nongnu.org; Wed, 22 Aug 2012 14:03:45 -0400 Received: by lbbgm13 with SMTP id gm13so724628lbb.4 for ; Wed, 22 Aug 2012 11:03:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer; bh=7BAGriStEv5S/VyC3xX9DDe9RGClOQaGfdNdYVSECrM=; b=p2LfdKVvOhy9x1bH7QPSclBdqH0QwBmAJSJEt9m/qw+D+mMykhhqEKogO68lL9Fg9J HKpD+Na0QyICDPOUiWTk48WuyLWK4khSFyoYBfzpyTptWl/pCvyidELgIqTDkpGTKu4n t8NkXwfXvzdLpksiqU0235LiQfckVmZoYW1nPYRwZACBabJFN2SCoHsv/0XpGa9j0Qc5 /gq3mMlpjh/deUWrvMYU0SohWNBHlKeJpLpKPzx6bcLrqczdeB64q3HuZ4dOtJ/3XZxL 2vRj22INGbA0UYNOwFxDD3+tAa8ODzLm3+ExQTkwPJpFihSnrpuZ584vlYg4gx937z4G 04nQ== Received: by 10.112.103.130 with SMTP id fw2mr9775035lbb.107.1345658624547; Wed, 22 Aug 2012 11:03:44 -0700 (PDT) Received: from grizzly.metropolis ([188.134.19.124]) by mx.google.com with ESMTPS id ly17sm5086092lab.2.2012.08.22.11.03.43 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 22 Aug 2012 11:03:43 -0700 (PDT) From: Max Filippov To: qemu-devel@nongnu.org Date: Wed, 22 Aug 2012 22:03:35 +0400 Message-Id: <1345658615-5005-1-git-send-email-jcmvbkbc@gmail.com> X-Mailer: git-send-email 1.7.7.6 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.85.217.173 Cc: Max Filippov Subject: [Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimplemented simcalls X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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..6d001c2 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] = ENOSYS; break; } }