From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97990C433EF for ; Thu, 21 Oct 2021 20:01:39 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 22CC161251 for ; Thu, 21 Oct 2021 20:01:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 22CC161251 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:58866 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mdeFu-0004ZY-3w for qemu-devel@archiver.kernel.org; Thu, 21 Oct 2021 16:01:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33596) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mde2J-0003jh-Pa; Thu, 21 Oct 2021 15:47:36 -0400 Received: from [201.28.113.2] (port=10704 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mde2H-0007UN-4j; Thu, 21 Oct 2021 15:47:35 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Thu, 21 Oct 2021 16:46:57 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by power9a (Postfix) with ESMTP id F326B800145; Thu, 21 Oct 2021 16:46:56 -0300 (-03) From: matheus.ferst@eldorado.org.br To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH 08/33] target/ppc: Implement cnttzdm Date: Thu, 21 Oct 2021 16:45:22 -0300 Message-Id: <20211021194547.672988-9-matheus.ferst@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211021194547.672988-1-matheus.ferst@eldorado.org.br> References: <20211021194547.672988-1-matheus.ferst@eldorado.org.br> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-OriginalArrivalTime: 21 Oct 2021 19:46:57.0467 (UTC) FILETIME=[682950B0:01D7C6B4] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=matheus.ferst@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lucas.castro@eldorado.org.br, richard.henderson@linaro.org, groug@kaod.org, luis.pires@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Luis Pires Implement the following PowerISA v3.1 instruction: cnttzdm: Count Trailing Zeros Doubleword Under Bit Mask Signed-off-by: Luis Pires Signed-off-by: Matheus Ferst --- target/ppc/helper.h | 1 + target/ppc/insn32.decode | 1 + target/ppc/int_helper.c | 16 ++++++++++++++++ target/ppc/translate/fixedpoint-impl.c.inc | 12 ++++++++++++ 4 files changed, 30 insertions(+) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index ee7c82fb60..115bdf474a 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -48,6 +48,7 @@ DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_3(sraw, tl, env, tl, tl) DEF_HELPER_FLAGS_2(cfuged, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(CNTLZDM, TCG_CALL_NO_RWG_SE, i64, i64, i64) +DEF_HELPER_FLAGS_2(CNTTZDM, TCG_CALL_NO_RWG_SE, i64, i64, i64) #if defined(TARGET_PPC64) DEF_HELPER_FLAGS_2(cmpeqb, TCG_CALL_NO_RWG_SE, i32, tl, tl) DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index 221cb00dd6..3d692e9e6a 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -204,6 +204,7 @@ ADDPCIS 010011 ..... ..... .......... 00010 . @DX CFUGED 011111 ..... ..... ..... 0011011100 - @X CNTLZDM 011111 ..... ..... ..... 0000111011 - @X +CNTTZDM 011111 ..... ..... ..... 1000111011 - @X ### Float-Point Load Instructions diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index dcef356034..efda78ed8e 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -404,6 +404,22 @@ uint64_t helper_CNTLZDM(uint64_t src, uint64_t mask) return count; } +uint64_t helper_CNTTZDM(uint64_t src, uint64_t mask) +{ + uint64_t count = 0; + + while (mask != 0) { + if ((src >> ctz64(mask)) & 1) { + break; + } + + count++; + mask &= mask - 1; + } + + return count; +} + /*****************************************************************************/ /* PowerPC 601 specific instructions (POWER bridge) */ target_ulong helper_div(CPUPPCState *env, target_ulong arg1, target_ulong arg2) diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc index 814fef2782..8c66fca96a 100644 --- a/target/ppc/translate/fixedpoint-impl.c.inc +++ b/target/ppc/translate/fixedpoint-impl.c.inc @@ -427,3 +427,15 @@ static bool trans_CNTLZDM(DisasContext *ctx, arg_X *a) #endif return true; } + +static bool trans_CNTTZDM(DisasContext *ctx, arg_X *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_INSNS_FLAGS2(ctx, ISA310); +#if defined(TARGET_PPC64) + gen_helper_CNTTZDM(cpu_gpr[a->ra], cpu_gpr[a->rt], cpu_gpr[a->rb]); +#else + qemu_build_not_reached(); +#endif + return true; +} -- 2.25.1