From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60846) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WR4x6-000131-28 for qemu-devel@nongnu.org; Fri, 21 Mar 2014 15:18:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WR4x0-0006lk-5G for qemu-devel@nongnu.org; Fri, 21 Mar 2014 15:17:59 -0400 Received: from greensocs.com ([178.33.234.66]:46155) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WR4wz-0006kj-W5 for qemu-devel@nongnu.org; Fri, 21 Mar 2014 15:17:54 -0400 From: fred.konrad@greensocs.com Date: Fri, 21 Mar 2014 20:17:34 +0100 Message-Id: <1395429454-24690-13-git-send-email-fred.konrad@greensocs.com> In-Reply-To: <1395429454-24690-1-git-send-email-fred.konrad@greensocs.com> References: <1395429454-24690-1-git-send-email-fred.konrad@greensocs.com> Subject: [Qemu-devel] [RFC PATCH 12/12] cexe: allow to enable reverse execution. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: mark.burton@greensocs.com, fred.konrad@greensocs.com From: KONRAD Frederic This creates QEMU options for reverse execution. Signed-off-by: KONRAD Frederic --- qemu-options.hx | 9 +++++++++ vl.c | 16 ++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index ee5437b..bd730f6 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2828,6 +2828,15 @@ order cores with complex cache hierarchies. The number of instructions executed often has little or no correlation with actual performance. ETEXI +DEF("cexe", 0, QEMU_OPTION_cexe, \ + "-cexe\n" \ + " enable reverse execution\n", QEMU_ARCH_ALL) +STEXI +@item -cexe +@findex -cexe +Enable reverse execution. +ETEXI + DEF("watchdog", HAS_ARG, QEMU_OPTION_watchdog, \ "-watchdog i6300esb|ib700\n" \ " enable virtual hardware watchdog [default=none]\n", diff --git a/vl.c b/vl.c index c9e849b..1312f46 100644 --- a/vl.c +++ b/vl.c @@ -228,6 +228,7 @@ static int default_floppy = 1; static int default_cdrom = 1; static int default_sdcard = 1; static int default_vga = 1; +static int default_cexe; static struct { const char *driver; @@ -3795,6 +3796,9 @@ int main(int argc, char **argv, char **envp) case QEMU_OPTION_icount: icount_option = optarg; break; + case QEMU_OPTION_cexe: + default_cexe = true; + break; case QEMU_OPTION_incoming: incoming = optarg; runstate_set(RUN_STATE_INMIGRATE); @@ -4508,6 +4512,15 @@ int main(int argc, char **argv, char **envp) vm_start(); } + if (default_cexe) { + if (!icount_option) { + fprintf(stderr, "Reverse execution requires icount.\n"); + exit(1); + } + + cexe_setup(); + } + os_setup_post(); if (is_daemonized()) { @@ -4524,5 +4537,8 @@ int main(int argc, char **argv, char **envp) tpm_cleanup(); #endif + if (cexe_is_enabled()) { + cexe_cleanup(); + } return 0; } -- 1.8.1.4