From patchwork Wed Jun 7 21:20:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aurelien Jarno X-Patchwork-Id: 9772855 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E89256034B for ; Wed, 7 Jun 2017 21:22:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 00D7A28396 for ; Wed, 7 Jun 2017 21:22:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E91A22847A; Wed, 7 Jun 2017 21:22:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0E23528396 for ; Wed, 7 Jun 2017 21:22:00 +0000 (UTC) Received: from localhost ([::1]:46169 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIiOt-0007en-D0 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 07 Jun 2017 17:21:59 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46625) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIiOJ-0007eh-R8 for qemu-devel@nongnu.org; Wed, 07 Jun 2017 17:21:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dIiOI-0006Br-Uu for qemu-devel@nongnu.org; Wed, 07 Jun 2017 17:21:23 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:100::1]:42862) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dIiOI-00068D-PF for qemu-devel@nongnu.org; Wed, 07 Jun 2017 17:21:22 -0400 Received: from [2001:bc8:30d7:121:cc44:2c6c:4d9c:42c0] (helo=ohm.rr44.fr) by hall.aurel32.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1dIiO8-0003mi-0W; Wed, 07 Jun 2017 23:21:12 +0200 Received: from aurel32 by ohm.rr44.fr with local (Exim 4.89) (envelope-from ) id 1dIiO7-0001bY-Az; Wed, 07 Jun 2017 23:21:11 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Wed, 7 Jun 2017 23:20:58 +0200 Message-Id: <20170607212058.6124-1-aurelien@aurel32.net> X-Mailer: git-send-email 2.11.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:bc8:30d7:100::1 Subject: [Qemu-devel] [PATCH] target/sh4: optimize cross-page and indirect jumps X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Aurelien Jarno Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Instead of unconditionally exiting to the exec loop for indirect jumps or cross-page direct jumps, use the lookup_and_goto_ptr helper to jump to the target if it is valid. Signed-off-by: Aurelien Jarno --- target/sh4/translate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/sh4/translate.c b/target/sh4/translate.c index 8bc132b27b..4f20537ef8 100644 --- a/target/sh4/translate.c +++ b/target/sh4/translate.c @@ -249,7 +249,7 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest) tcg_gen_movi_i32(cpu_pc, dest); if (ctx->singlestep_enabled) gen_helper_debug(cpu_env); - tcg_gen_exit_tb(0); + tcg_gen_lookup_and_goto_ptr(cpu_pc); } } @@ -262,7 +262,7 @@ static void gen_jump(DisasContext * ctx) tcg_gen_discard_i32(cpu_delayed_pc); if (ctx->singlestep_enabled) gen_helper_debug(cpu_env); - tcg_gen_exit_tb(0); + tcg_gen_lookup_and_goto_ptr(cpu_pc); } else { gen_goto_tb(ctx, 0, ctx->delayed_pc); }