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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id f12-20020a7bcc0c000000b003f17848673fsm28916167wmh.27.2023.05.12.07.41.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 May 2023 07:41:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683902475; x=1686494475; 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=MFhepMGaE0XG072ziJIvurTDqYdBHGuPC3+MsbwqRWw=; b=L5by0c0KR0Xk86y/A7dMZxjdDPWyGzOW6xvd3kUtHH9By/zWfql0StrJp+u8E9R5FL oehq9vON9HI+KKG3TssdJKPZNO32UpBtHz2VpZw9V2hpx2fefhZClp3XD8bm0rfstEXC IEGzHOOyHiKIhSOiB/a7HB2k0Cd21gkm4RhIYV0PRKly0K4A7TLKg7oFGwERrHXmn4Sv V8HSadY6BJt82OZKiTGjGeAFnLCWwkxZWI9IaKCVMzvEqqqBbs3vKJaUe5LYYc2f0xXa 6477JE7Q9ZIBjvd7liHpa1cbsCgqn6INfge81wT6Es9IpC3KpZgF7vSsVmFsZqdKnNQM 5oJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683902475; x=1686494475; 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=MFhepMGaE0XG072ziJIvurTDqYdBHGuPC3+MsbwqRWw=; b=eD28ls2sh68+NX5pFfjCbLm/blJmnYX97uN2NRJpTvCfBT+OCqWxVQXW3GjIXKQb2O 3a2HQPl+QAz8Qxc6fxXAqg7Ciaf+zCQrCBs2LIiP53aKSh8yY2fUvuOuEZy8wsfztx5w hnqFSsMT9BqblcdAm95KfthT8a8XJ0+vdcloih7dz1X7YKA/XPK9DEU+38iT8DZmewGC iKBNJm4nZIn52+cfk6IpBMIP08hyAWuFNR+KP35B8tYtBdZxPpZVsjMGypYXUg5xgW6+ RmYj7TiUD1PbRp0Cah7j6sG9SbcYErcfKOrYyhT+YePip1MUi7TVD78NoNvtVpvxN4br J81w== X-Gm-Message-State: AC+VfDwQC/8zOcFJh//U5XraNRrCKyyfmSdOx4zhJq7qXu/0VdSHe2Un jmy3OpZSpogNrjJC5b8rXaqJfQ== X-Google-Smtp-Source: ACHHUZ5pQh3ooLXj+4CQpnnjNYRR/74V8Qkl3nGBARIzbWNPi1S3ToCt8dJvGVD7LDz43wJkV4qYKQ== X-Received: by 2002:a1c:ed04:0:b0:3f4:f03b:56d7 with SMTP id l4-20020a1ced04000000b003f4f03b56d7mr3117608wmh.16.1683902475454; Fri, 12 May 2023 07:41:15 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Richard Henderson Subject: [PATCH 15/20] target/arm: Convert TBZ, TBNZ to decodetree Date: Fri, 12 May 2023 15:41:01 +0100 Message-Id: <20230512144106.3608981-16-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230512144106.3608981-1-peter.maydell@linaro.org> References: <20230512144106.3608981-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32b; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32b.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, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1683902738312100012 Content-Type: text/plain; charset="utf-8" Convert the test-and-branch-immediate insns TBZ and TBNZ to decodetree. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/tcg/a64.decode | 7 +++++++ target/arm/tcg/translate-a64.c | 25 +++++-------------------- 2 files changed, 12 insertions(+), 20 deletions(-) diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 86220569e13..68dc820ece0 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -121,3 +121,10 @@ BL 1 00101 .......................... @br= anch @cbz sf:1 ...... nz:1 ................... rt:5 &cbz imm=3D%imm19 =20 CBZ . 011010 . ................... ..... @cbz + +%imm14 5:s14 !function=3Dtimes_4 +%imm31_19 31:1 19:5 +&tbz rt imm nz bitpos +@tbz . ...... nz:1 ..... .............. rt:5 &tbz imm=3D%imm14= bitpos=3D%imm31_19 + +TBZ . 011011 . ..... .............. ..... @tbz diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 5da551385bd..bd59d0616e3 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -1352,35 +1352,23 @@ static bool trans_CBZ(DisasContext *s, arg_cbz *a) return true; } =20 -/* Test and branch (immediate) - * 31 30 25 24 23 19 18 5 4 0 - * +----+-------------+----+-------+-------------+------+ - * | b5 | 0 1 1 0 1 1 | op | b40 | imm14 | Rt | - * +----+-------------+----+-------+-------------+------+ - */ -static void disas_test_b_imm(DisasContext *s, uint32_t insn) +static bool trans_TBZ(DisasContext *s, arg_tbz *a) { - unsigned int bit_pos, op, rt; - int64_t diff; DisasLabel match; TCGv_i64 tcg_cmp; =20 - bit_pos =3D (extract32(insn, 31, 1) << 5) | extract32(insn, 19, 5); - op =3D extract32(insn, 24, 1); /* 0: TBZ; 1: TBNZ */ - diff =3D sextract32(insn, 5, 14) * 4; - rt =3D extract32(insn, 0, 5); - tcg_cmp =3D tcg_temp_new_i64(); - tcg_gen_andi_i64(tcg_cmp, cpu_reg(s, rt), (1ULL << bit_pos)); + tcg_gen_andi_i64(tcg_cmp, cpu_reg(s, a->rt), (1ULL << a->bitpos)); =20 reset_btype(s); =20 match =3D gen_disas_label(s); - tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ, + tcg_gen_brcondi_i64(a->nz ? TCG_COND_NE : TCG_COND_EQ, tcg_cmp, 0, match.label); gen_goto_tb(s, 0, 4); set_disas_label(s, match); - gen_goto_tb(s, 1, diff); + gen_goto_tb(s, 1, a->imm); + return true; } =20 /* Conditional branch (immediate) @@ -2397,9 +2385,6 @@ static void disas_uncond_b_reg(DisasContext *s, uint3= 2_t insn) static void disas_b_exc_sys(DisasContext *s, uint32_t insn) { switch (extract32(insn, 25, 7)) { - case 0x1b: case 0x5b: /* Test & branch (immediate) */ - disas_test_b_imm(s, insn); - break; case 0x2a: /* Conditional branch (immediate) */ disas_cond_b_imm(s, insn); break; --=20 2.34.1