From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43864) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUAab-0006HC-IS for qemu-devel@nongnu.org; Wed, 17 Sep 2014 04:27:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XUAaV-0003gY-7G for qemu-devel@nongnu.org; Wed, 17 Sep 2014 04:27:49 -0400 Received: from [2001:41d0:8:2b42::1] (port=60410 helo=greensocs.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUAaV-0003fd-1M for qemu-devel@nongnu.org; Wed, 17 Sep 2014 04:27:43 -0400 From: fred.konrad@greensocs.com Date: Wed, 17 Sep 2014 10:26:48 +0200 Message-Id: <1410942410-32604-9-git-send-email-fred.konrad@greensocs.com> In-Reply-To: <1410942410-32604-1-git-send-email-fred.konrad@greensocs.com> References: <1410942410-32604-1-git-send-email-fred.konrad@greensocs.com> Subject: [Qemu-devel] [RFC V7 08/10] cpu-exec: trigger a debug request when rexec stops. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com, fred.konrad@greensocs.com, mark.burton@greensocs.com, Pavel.Dovgaluk@ispras.ru, peter.maydell@linaro.org From: KONRAD Frederic This allows QEMU to trigger a debug exception when rexec_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 bd93165..be2070d 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -24,6 +24,7 @@ #include "qemu/atomic.h" #include "sysemu/qtest.h" #include "qemu/timer.h" +#include "reverse-execution.h" /* -icount align implementation. */ @@ -333,6 +334,18 @@ 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 (rexec_is_enabled() && rexec_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; -- 1.9.0