From patchwork Tue Nov 26 14:00:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 13886049 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 869B0D3B98F for ; Tue, 26 Nov 2024 14:04:18 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tFw92-00056f-Kp; Tue, 26 Nov 2024 09:02:25 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tFw8P-0004LS-QR for qemu-devel@nongnu.org; Tue, 26 Nov 2024 09:01:49 -0500 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tFw8O-0005PV-5i for qemu-devel@nongnu.org; Tue, 26 Nov 2024 09:01:45 -0500 Received: by mail-wr1-x433.google.com with SMTP id ffacd0b85a97d-382376fcc4fso3349469f8f.2 for ; Tue, 26 Nov 2024 06:01:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1732629702; x=1733234502; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JJyAj6665biaVaFql3kvNaD085ICHYFrXjshxoAYeg8=; b=SXF5GR2pcnVfuhxiil4c0ArauzpsYCRtkUxR281zx9269pym+2KxMQVJuUibGqQwOL lofLvHy0rD5zdIiBTJ2dJISg6lHlJtHrxvfWQyQyPIHAEOv653d+Ah2kpXDGt0bU5w8I ghYbau5wJSgeU/mBqnKl0t6/U/QomC9jah8B6yIKP0oREuCmhGIeFkpsfhIiUY5NkB4X phDLdJpUdlSJV3GVN6yw1PVSV0iQZdAT2QaBxQtT1Hm4+qrULswMNT9jD+hJsuBhf+hQ 7B2nU650cVGZN5jX9evaDSofA1VlR+MMJ4xj467/xdWVf/xzcnJBJSAg2ufTyChZDNXX j6hg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732629702; x=1733234502; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JJyAj6665biaVaFql3kvNaD085ICHYFrXjshxoAYeg8=; b=X1YeZufouUAb4P5SjDyn59LYJifktECsnb2hbNewDENT2Bxo75fsgy56UhWHqjNJZr XgzjpYgi3y1YwjBQelbQn41Yq5BoDWTbC/MhwvOv6NBFU/+reYiJNLpjj3jg2E+rE2Vj kOQUOcBJr48abtO/WpXiQHYd9wTZrk9Br7pA9unFrtxw2DEGTD5sbiVd5nGjK0niJLfF GPBsl3JoEGfF884GeP/ZUFCnhqp7a95VMO50J3je/GseVYa6Juy97fTl28FvsMPLLCb/ HLcFeIktxc/Xajl4Qoa5NF4banNbYiduJ+IndUeJfp2blO4Ikjq0fp86olK9JEhvKN+4 rlrg== X-Gm-Message-State: AOJu0Ywvy+TfBg4OHxpDQFr7NoRJG3m9iNb1K0bo5//NBTKoipDs02iL 2aumBlMX+bztTmP+fHx0n2aisPXgO4dDmPLRzzwEMeOkcVvPFJCKNhBz2QCVpnzhtKeWNPzQs9X q X-Gm-Gg: ASbGncsft8ehc44/t6JTAfvWcjm6z+e9Ge2t3bVxSJj0SujuU5ptGGk5z/5RV03Jcw+ 5RFldTWrUmjauV1BO/GESuA7Y+xnXAkR8TGX2K8GwcukrbD9oJCPacvTlgpqLVGiXwXZ88qMsqB JLJ3ulwLiHyXPsDYebAlKc8WGB7gLZEZCa35+eCHBPXTrzt7NxvrXFO8yRerSuamdIx3Urw4BXx 52lSu5gq9592opDAh6Diq9/lV/Q0LGiRmZ8CjZJ1Qy1kiPKtdwx05LtS//SWgjwGkvyK0h6 X-Google-Smtp-Source: AGHT+IG9gTXzrDLmB8y5DM4XWydRv7uACSUAzvJv3tDQC+y6SB3PsrepnWJIPB4mQt2Jqbjq/6dFdg== X-Received: by 2002:a5d:64ec:0:b0:382:5129:9f2a with SMTP id ffacd0b85a97d-38260b4d621mr13805896f8f.2.1732629699807; Tue, 26 Nov 2024 06:01:39 -0800 (PST) Received: from localhost.localdomain ([176.176.143.205]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3825fbc3a3asm13310362f8f.66.2024.11.26.06.01.38 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 26 Nov 2024 06:01:39 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aurelien Jarno , Aleksandar Rikalo , Richard Henderson , Jiaxun Yang Subject: [PATCH v3 14/16] target/mips: Convert microMIPS LI opcode to decodetree Date: Tue, 26 Nov 2024 15:00:00 +0100 Message-ID: <20241126140003.74871-15-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241126140003.74871-1-philmd@linaro.org> References: <20241126140003.74871-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=philmd@linaro.org; helo=mail-wr1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Once the xlat() and simm7() helpers are added, the decoding is trivial. Signed-off-by: Philippe Mathieu-Daudé --- target/mips/tcg/micromips16.decode | 9 +++++++++ target/mips/tcg/micromips_translate.c | 19 +++++++++++++++++++ target/mips/tcg/micromips_translate.c.inc | 12 +----------- 3 files changed, 29 insertions(+), 11 deletions(-) diff --git a/target/mips/tcg/micromips16.decode b/target/mips/tcg/micromips16.decode index d341da16b04..fdc3b131c9c 100644 --- a/target/mips/tcg/micromips16.decode +++ b/target/mips/tcg/micromips16.decode @@ -9,3 +9,12 @@ # (Document Number: MD00582) # microMIPS64 Instruction Set # (Document Number: MD00594) + +&rd_imm rd imm + +%xlat_rd 7:3 !function=xlat +%simm7 0:7 !function=simm7 + +@rd_imm7 ...... ... ....... &rd_imm rd=%xlat_rd imm=%simm7 + +LI 111011 ... ....... @rd_imm7 # LI16 diff --git a/target/mips/tcg/micromips_translate.c b/target/mips/tcg/micromips_translate.c index f0b5dbf655d..198eb466057 100644 --- a/target/mips/tcg/micromips_translate.c +++ b/target/mips/tcg/micromips_translate.c @@ -9,11 +9,23 @@ #include "qemu/osdep.h" #include "translate.h" +static int xlat(DisasContext *ctx, int x) +{ + static const int map[] = { 16, 17, 2, 3, 4, 5, 6, 7 }; + + return map[x]; +} + static inline int plus_1(DisasContext *ctx, int x) { return x + 1; } +static inline int simm7(DisasContext *ctx, int x) +{ + return x == 0x7f ? -1 : x; +} + /* Include the auto-generated decoders. */ #include "decode-micromips16.c.inc" #include "decode-micromips32.c.inc" @@ -22,3 +34,10 @@ static bool trans_LSA(DisasContext *ctx, arg_r *a) { return gen_lsa(ctx, a->rd, a->rt, a->rs, a->sa); } + +static bool trans_LI(DisasContext *ctx, arg_rd_imm *a) +{ + gen_li(ctx, a->rd, a->imm); + + return true; +} diff --git a/target/mips/tcg/micromips_translate.c.inc b/target/mips/tcg/micromips_translate.c.inc index 73394554509..cb98d6af7e4 100644 --- a/target/mips/tcg/micromips_translate.c.inc +++ b/target/mips/tcg/micromips_translate.c.inc @@ -113,7 +113,6 @@ enum { BLTZALC = 0x38, BLTUC = 0x38, SW16 = 0x3a, - LI16 = 0x3b, JALX32 = 0x3c, JAL32 = 0x3d, BLEZC = 0x3d, @@ -3004,7 +3003,7 @@ static int decode_isa_micromips(CPUMIPSState *env, DisasContext *ctx) case 2: /* LBU16, LHU16, LWSP16, LW16, SB16, SH16, SWSP16, SW16 */ case 3: - /* MOVE16, ANDI16, POOL16D, POOL16E, BEQZ16, BNEZ16, B16, LI16 */ + /* MOVE16, ANDI16, POOL16D, POOL16E, BEQZ16, BNEZ16, B16 */ if (ctx->hflags & MIPS_HFLAG_BDS32) { gen_reserved_instruction(ctx); return 2; @@ -3214,15 +3213,6 @@ static int decode_isa_micromips(CPUMIPSState *env, DisasContext *ctx) (ctx->insn_flags & ISA_MIPS_R6) ? 0 : 4); break; - case LI16: - { - int reg = mmreg(uMIPS_RD(ctx->opcode)); - int imm = ZIMM(ctx->opcode, 0, 7); - - imm = (imm == 0x7f ? -1 : imm); - tcg_gen_movi_tl(cpu_gpr[reg], imm); - } - break; case RES_29: case RES_31: case RES_39: