From patchwork Wed Jun 25 08:26:46 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: fred.konrad@greensocs.com X-Patchwork-Id: 363854 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 5C38914008C for ; Wed, 25 Jun 2014 18:29:41 +1000 (EST) Received: from localhost ([::1]:35921 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WziaJ-0006sX-5e for incoming@patchwork.ozlabs.org; Wed, 25 Jun 2014 04:29:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47761) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WziXw-0002Ne-CC for qemu-devel@nongnu.org; Wed, 25 Jun 2014 04:27:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WziXq-0008K0-Jz for qemu-devel@nongnu.org; Wed, 25 Jun 2014 04:27:12 -0400 Received: from greensocs.com ([178.33.234.66]:50799) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WziXq-0008Jn-ET for qemu-devel@nongnu.org; Wed, 25 Jun 2014 04:27:06 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by greensocs.com (Postfix) with ESMTP id 0BC23280BF; Wed, 25 Jun 2014 10:27:19 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at Received: from greensocs.com ([127.0.0.1]) by localhost (greensocs.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gXCKFXsEcoMp; Wed, 25 Jun 2014 10:27:18 +0200 (CEST) Received: by greensocs.com (Postfix, from userid 998) id E74D7280C1; Wed, 25 Jun 2014 10:27:18 +0200 (CEST) Received: from localhost.localdomain (lan31-11-83-155-143-136.fbx.proxad.net [83.155.143.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: fred.konrad@greensocs.com) by greensocs.com (Postfix) with ESMTPSA id 8DEAC280BF; Wed, 25 Jun 2014 10:27:18 +0200 (CEST) From: fred.konrad@greensocs.com To: qemu-devel@nongnu.org Date: Wed, 25 Jun 2014 10:26:46 +0200 Message-Id: <1403684808-23248-12-git-send-email-fred.konrad@greensocs.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1403684808-23248-1-git-send-email-fred.konrad@greensocs.com> References: <1403684808-23248-1-git-send-email-fred.konrad@greensocs.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 178.33.234.66 Cc: peter.maydell@linaro.org, quintela@redhat.com, mark.burton@greensocs.com, dgilbert@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, vilanova@ac.upc.edu, fred.konrad@greensocs.com Subject: [Qemu-devel] [RFC PATCH v4 11/13] cpu-exec: trigger a debug request when rexec stops. 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 From: KONRAD Frederic This allows QEMU to trigger a debug exception when cexe_dbg_requested is set. Signed-off-by: KONRAD Frederic --- cpu-exec.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/cpu-exec.c b/cpu-exec.c index 38e5f02..c92cfd1 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -22,6 +22,7 @@ #include "tcg.h" #include "qemu/atomic.h" #include "sysemu/qtest.h" +#include "reverse-execution.h" void cpu_loop_exit(CPUState *cpu) { @@ -230,6 +231,18 @@ int cpu_exec(CPUArchState *env) /* This must be volatile so it is not trashed by longjmp() */ volatile bool have_tb_lock = false; + #ifndef CONFIG_USER_ONLY + if (cexe_is_enabled() && cexe_dbg_requested()) { + /* + * Reverse execution need to stop right now. + * So just generate a EXCP_DEBUG. + */ + cpu->exception_index = EXCP_DEBUG; + cpu_handle_debug_exception(env); + return EXCP_DEBUG; + } + #endif /* !CONFIG_USER_ONLY */ + if (cpu->halted) { if (!cpu_has_work(cpu)) { return EXCP_HALTED;