From patchwork Sat May 30 21:17:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Gang X-Patchwork-Id: 478504 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 05F3114012C for ; Sun, 31 May 2015 07:16:58 +1000 (AEST) Received: from localhost ([::1]:40559 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yyo7k-0007bS-5Z for incoming@patchwork.ozlabs.org; Sat, 30 May 2015 17:16:56 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48778) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yyo7U-00076j-Fx for qemu-devel@nongnu.org; Sat, 30 May 2015 17:16:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yyo7Q-0006tZ-El for qemu-devel@nongnu.org; Sat, 30 May 2015 17:16:40 -0400 Received: from blu004-omc1s4.hotmail.com ([65.55.116.15]:54691) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yyo7Q-0006t1-Ar for qemu-devel@nongnu.org; Sat, 30 May 2015 17:16:36 -0400 Received: from BLU436-SMTP234 ([65.55.116.9]) by BLU004-OMC1S4.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22751); Sat, 30 May 2015 14:16:36 -0700 X-TMN: [X3Br0KmP9bo7gsdxqEsJ0r6+noVzqNfM] X-Originating-Email: [xili_gchen_5257@hotmail.com] Message-ID: Date: Sun, 31 May 2015 05:17:11 +0800 From: Chen Gang User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: "rth@twiddle.net" , Peter Maydell , =?UTF-8?B?QW5kcmVhcyBGw6RyYmVy?= , Chris Metcalf References: In-Reply-To: X-OriginalArrivalTime: 30 May 2015 21:16:34.0339 (UTC) FILETIME=[E80EDF30:01D09B1D] X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 65.55.116.15 Cc: "walt@tilera.com" , Riku Voipio , qemu-devel Subject: [Qemu-devel] [PATCH 08/10 v11] target-tilegx: Add several helpers for instructions translation 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 The related instructions are exception, cntlz, cnttz, and shufflebytes. Signed-off-by: Chen Gang --- target-tilegx/helper.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++ target-tilegx/helper.h | 4 +++ 2 files changed, 77 insertions(+) create mode 100644 target-tilegx/helper.c create mode 100644 target-tilegx/helper.h diff --git a/target-tilegx/helper.c b/target-tilegx/helper.c new file mode 100644 index 0000000..f125dc8 --- /dev/null +++ b/target-tilegx/helper.c @@ -0,0 +1,73 @@ +/* + * QEMU TILE-Gx helpers + * + * Copyright (c) 2015 Chen Gang + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * + */ + +#include "cpu.h" +#include "qemu-common.h" +#include "exec/helper-proto.h" + +void helper_exception(CPUTLGState *env, uint32_t excp) +{ + CPUState *cs = CPU(tilegx_env_get_cpu(env)); + + cs->exception_index = excp; + cpu_loop_exit(cs); +} + +uint64_t helper_cntlz(uint64_t arg) +{ + return clz64(arg); +} + +uint64_t helper_cnttz(uint64_t arg) +{ + return ctz64(arg); +} + +/* + Functional Description + uint64_t a = rf[SrcA]; + uint64_t b = rf[SrcB]; + uint64_t d = rf[Dest]; + uint64_t output = 0; + unsigned int counter; + for (counter = 0; counter < (WORD_SIZE / BYTE_SIZE); counter++) + { + int sel = getByte (b, counter) & 0xf; + uint8_t byte = (sel < 8) ? getByte (d, sel) : getByte (a, (sel - 8)); + output = setByte (output, counter, byte); + } + rf[Dest] = output; + */ +uint64_t helper_shufflebytes(uint64_t rdst, uint64_t rsrc, uint64_t rsrcb) +{ + uint64_t vdst = 0; + int count, sel; + + for (count = 0; count < 8; count++) { + sel = (rsrcb >> (count * 8)) & 0xf; + if (sel < 8) { + vdst |= ((rdst >> (8 * sel)) & 0xff) << (count * 8); + } else { + vdst |= ((rsrc >> (8 * (8 - sel))) & 0xff) << (count * 8); + } + } + + return vdst; +} diff --git a/target-tilegx/helper.h b/target-tilegx/helper.h new file mode 100644 index 0000000..fd5517e --- /dev/null +++ b/target-tilegx/helper.h @@ -0,0 +1,4 @@ +DEF_HELPER_2(exception, noreturn, env, i32) +DEF_HELPER_FLAGS_1(cntlz, TCG_CALL_NO_RWG_SE, i64, i64) +DEF_HELPER_FLAGS_1(cnttz, TCG_CALL_NO_RWG_SE, i64, i64) +DEF_HELPER_FLAGS_3(shufflebytes, TCG_CALL_NO_RWG_SE, i64, i64, i64, i64)