From patchwork Mon Oct 29 15:20:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 990318 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 42kJdT6T2vz9s55 for ; Tue, 30 Oct 2018 02:37:49 +1100 (AEDT) Received: from localhost ([::1]:46303 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gH9bv-0006eA-1n for incoming@patchwork.ozlabs.org; Mon, 29 Oct 2018 11:37:47 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34404) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gH9Lg-0008Ss-EU for qemu-devel@nongnu.org; Mon, 29 Oct 2018 11:21:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gH9Lc-0003QB-FS for qemu-devel@nongnu.org; Mon, 29 Oct 2018 11:21:00 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:39510 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gH9Lb-0003IB-Sb for qemu-devel@nongnu.org; Mon, 29 Oct 2018 11:20:56 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id B03521A23D8; Mon, 29 Oct 2018 16:20:25 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 89C021A23B5; Mon, 29 Oct 2018 16:20:25 +0100 (CET) From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Mon, 29 Oct 2018 16:20:07 +0100 Message-Id: <1540826418-5501-17-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1540826418-5501-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1540826418-5501-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PULL 16/27] target/mips: Add emulation of MXU instruction D16MUL 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: peter.maydell@linaro.org, amarkovic@wavecomp.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Craig Janeczek Add support for emulating the D16MUL MXU instruction. Reviewed-by: Aleksandar Markovic Signed-off-by: Craig Janeczek Signed-off-by: Aleksandar Markovic --- target/mips/translate.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 63 insertions(+), 3 deletions(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index cb7a24b..dbcb69b 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -24175,6 +24175,68 @@ static void gen_mxu_s8ldd(DisasContext *ctx) tcg_temp_free(t1); } +/* + * D16MUL XRa, XRb, XRc, XRd, optn2 - Signed 16 bit pattern multiplication + */ +static void gen_mxu_d16mul(DisasContext *ctx) +{ + TCGv t0, t1, t2, t3; + TCGLabel *l0; + uint32_t XRa, XRb, XRc, XRd, optn2; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + t2 = tcg_temp_new(); + t3 = tcg_temp_new(); + + l0 = gen_new_label(); + + XRa = extract32(ctx->opcode, 6, 4); + XRb = extract32(ctx->opcode, 10, 4); + XRc = extract32(ctx->opcode, 14, 4); + XRd = extract32(ctx->opcode, 18, 4); + optn2 = extract32(ctx->opcode, 22, 2); + + gen_load_mxu_cr(t0); + tcg_gen_andi_tl(t0, t0, MXU_CR_MXU_EN); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, MXU_CR_MXU_EN, l0); + + gen_load_mxu_gpr(t1, XRb); + tcg_gen_sextract_tl(t0, t1, 0, 16); + tcg_gen_sextract_tl(t1, t1, 16, 16); + gen_load_mxu_gpr(t3, XRc); + tcg_gen_sextract_tl(t2, t3, 0, 16); + tcg_gen_sextract_tl(t3, t3, 16, 16); + + switch (optn2) { + case MXU_OPTN2_WW: /* XRB.H*XRC.H == lop, XRB.L*XRC.L == rop */ + tcg_gen_mul_tl(t3, t1, t3); + tcg_gen_mul_tl(t2, t0, t2); + break; + case MXU_OPTN2_LW: /* XRB.L*XRC.H == lop, XRB.L*XRC.L == rop */ + tcg_gen_mul_tl(t3, t0, t3); + tcg_gen_mul_tl(t2, t0, t2); + break; + case MXU_OPTN2_HW: /* XRB.H*XRC.H == lop, XRB.H*XRC.L == rop */ + tcg_gen_mul_tl(t3, t1, t3); + tcg_gen_mul_tl(t2, t1, t2); + break; + case MXU_OPTN2_XW: /* XRB.L*XRC.H == lop, XRB.H*XRC.L == rop */ + tcg_gen_mul_tl(t3, t0, t3); + tcg_gen_mul_tl(t2, t1, t2); + break; + } + gen_store_mxu_gpr(t3, XRa); + gen_store_mxu_gpr(t2, XRd); + + gen_set_label(l0); + + tcg_temp_free(t0); + tcg_temp_free(t1); + tcg_temp_free(t2); + tcg_temp_free(t3); +} + /* * Decoding engine for MXU @@ -25139,9 +25201,7 @@ static void decode_opc_mxu(CPUMIPSState *env, DisasContext *ctx) decode_opc_mxu__pool02(env, ctx); break; case OPC_MXU_D16MUL: - /* TODO: Implement emulation of D16MUL instruction. */ - MIPS_INVAL("OPC_MXU_D16MUL"); - generate_exception_end(ctx, EXCP_RI); + gen_mxu_d16mul(ctx); break; case OPC_MXU__POOL03: decode_opc_mxu__pool03(env, ctx);