From patchwork Wed Mar 30 20:25:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12796329 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 659F8C433F5 for ; Wed, 30 Mar 2022 20:30:03 +0000 (UTC) Received: from localhost ([::1]:46796 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nZex8-0008AB-HE for qemu-devel@archiver.kernel.org; Wed, 30 Mar 2022 16:30:02 -0400 Received: from eggs.gnu.org ([209.51.188.92]:49944) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nZeuH-0004B0-4r; Wed, 30 Mar 2022 16:27:05 -0400 Received: from [187.72.171.209] (port=8867 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nZeuF-0001WS-HI; Wed, 30 Mar 2022 16:27:04 -0400 Received: from p9ibm ([10.10.71.235]) by outlook.eldorado.org.br over TLS secured channel with Microsoft SMTPSVC(8.5.9600.16384); Wed, 30 Mar 2022 17:25:37 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by p9ibm (Postfix) with ESMTP id 6917E8002AF; Wed, 30 Mar 2022 17:25:37 -0300 (-03) From: "Lucas Mateus Castro(alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH 03/10] target/ppc: Implemented vector divide instructions Date: Wed, 30 Mar 2022 17:25:08 -0300 Message-Id: <20220330202515.66554-4-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220330202515.66554-1-lucas.araujo@eldorado.org.br> References: <20220330202515.66554-1-lucas.araujo@eldorado.org.br> MIME-Version: 1.0 X-OriginalArrivalTime: 30 Mar 2022 20:25:37.0887 (UTC) FILETIME=[51554EF0:01D84474] X-Host-Lookup-Failed: Reverse DNS lookup failed for 187.72.171.209 (failed) Received-SPF: pass client-ip=187.72.171.209; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.659, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: danielhb413@gmail.com, richard.henderson@linaro.org, Greg Kurz , "Lucas Mateus Castro \(alqotel\)" , clg@kaod.org, David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Lucas Mateus Castro (alqotel)" Implement the following PowerISA v3.1 instructions: vdivsw: Vector Divide Signed Word vdivuw: Vector Divide Unsigned Word vdivsd: Vector Divide Signed Doubleword vdivud: Vector Divide Unsigned Doubleword Hardware behavior based on mambo Signed-off-by: Lucas Mateus Castro (alqotel) --- target/ppc/insn32.decode | 7 +++++ target/ppc/translate/vmx-impl.c.inc | 49 +++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index ac2d3da9a7..597768558b 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -703,3 +703,10 @@ XVTLSBB 111100 ... -- 00010 ..... 111011011 . - @XX2_bf_xb &XL_s s:uint8_t @XL_s ......-------------- s:1 .......... - &XL_s RFEBB 010011-------------- . 0010010010 - @XL_s + +## Vector Division Instructions + +VDIVSW 000100 ..... ..... ..... 00110001011 @VX +VDIVUW 000100 ..... ..... ..... 00010001011 @VX +VDIVSD 000100 ..... ..... ..... 00111001011 @VX +VDIVUD 000100 ..... ..... ..... 00011001011 @VX diff --git a/target/ppc/translate/vmx-impl.c.inc b/target/ppc/translate/vmx-impl.c.inc index 6101bca3fd..d96e804abb 100644 --- a/target/ppc/translate/vmx-impl.c.inc +++ b/target/ppc/translate/vmx-impl.c.inc @@ -3236,6 +3236,55 @@ TRANS(VMULHSD, do_vx_mulh, true , do_vx_vmulhd_i64) TRANS(VMULHUW, do_vx_mulh, false, do_vx_vmulhw_i64) TRANS(VMULHUD, do_vx_mulh, false, do_vx_vmulhd_i64) +#define TRANS_VDIV_VMOD(FLAGS, NAME, VECE, FNI4_FUNC, FNI8_FUNC) \ +static bool trans_##NAME(DisasContext *ctx, arg_VX *a) \ +{ \ + static const GVecGen3 op[2] = { \ + { \ + .fni4 = FNI4_FUNC, \ + .fni8 = FNI8_FUNC, \ + .vece = MO_32 \ + }, \ + { \ + .fni4 = FNI4_FUNC, \ + .fni8 = FNI8_FUNC, \ + .vece = MO_64 \ + }, \ + }; \ + \ + REQUIRE_VECTOR(ctx); \ + REQUIRE_INSNS_FLAGS2(ctx, FLAGS); \ + \ + tcg_gen_gvec_3(avr_full_offset(a->vrt), avr_full_offset(a->vra), \ + avr_full_offset(a->vrb), 16, 16, &op[VECE - MO_32]); \ + \ + return true; \ +} + +#define DIV_VEC(NAME, SZ, DIV) \ +static void do_vx_##NAME(TCGv_##SZ t, TCGv_##SZ a, TCGv_##SZ b) \ +{ \ + TCGv_##SZ zero = tcg_constant_##SZ(0), one = tcg_constant_##SZ(1); \ + /* \ + * If N/0 the instruction used by the backend might deliver \ + * a signal to the process and the hardware returns 0 when \ + * N/0, so if b = 0 return 0/1 \ + */ \ + tcg_gen_movcond_##SZ(TCG_COND_EQ, a, b, zero, zero, a); \ + tcg_gen_movcond_##SZ(TCG_COND_EQ, b, b, zero, one, b); \ + DIV(t, a, b); \ +} + +DIV_VEC(div_i32 , i32, tcg_gen_div_i32) +DIV_VEC(divu_i32, i32, tcg_gen_divu_i32) +DIV_VEC(div_i64 , i64, tcg_gen_div_i64) +DIV_VEC(divu_i64, i64, tcg_gen_divu_i64) + +TRANS_VDIV_VMOD(ISA310, VDIVSW, MO_32, do_vx_div_i32 , NULL) +TRANS_VDIV_VMOD(ISA310, VDIVUW, MO_32, do_vx_divu_i32, NULL) +TRANS_VDIV_VMOD(ISA310, VDIVSD, MO_64, NULL, do_vx_div_i64) +TRANS_VDIV_VMOD(ISA310, VDIVUD, MO_64, NULL, do_vx_divu_i64) + #undef GEN_VR_LDX #undef GEN_VR_STX #undef GEN_VR_LVE