From patchwork Tue Jul 12 20:53:37 2022 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: 12915689 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 B2D95C43334 for ; Tue, 12 Jul 2022 21:02:16 +0000 (UTC) Received: from localhost ([::1]:52740 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oBN1L-00088o-OS for qemu-devel@archiver.kernel.org; Tue, 12 Jul 2022 17:02:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57870) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oBMtQ-0005g6-41 for qemu-devel@nongnu.org; Tue, 12 Jul 2022 16:54:04 -0400 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]:33529) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oBMtO-0007Bx-Lk for qemu-devel@nongnu.org; Tue, 12 Jul 2022 16:54:03 -0400 Received: by mail-wr1-x433.google.com with SMTP id h17so12875033wrx.0 for ; Tue, 12 Jul 2022 13:54:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=L1VDa0+dZ75eDcZKDsyiGvySf0TURL5H6Mgvjr+DBeg=; b=orIzBllHSWyl+2ahAVcJ1G6H9IfEzB+EJU9lVXw/Eff0B+XqbMCCEx7CFvo9ZsZzSD ODZ6LMWWkubPVc6koO+yUEcW6Ue6oXvodqUdWvhIWEV7McMXFyhig3JYD8NEk/R9PM+5 0fh3ImB/1u+cUFPiQFHp79zonPxIqD6gCqp+Y28ozUN3I/GdGY+VwFYU+yHUa9kahKLI yrqqDfa0JBU6ane5WZA7fekQ1m61L2KHFk+1WrVxhaVe9q/yVFntTGaQy445937xz4OX nQrxj8dZiPthc+CKfnWeZzAtrOKXl1MEjE/B2uVp/b6msXyqPhgJqStXcCuVyleavE5f QSFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=L1VDa0+dZ75eDcZKDsyiGvySf0TURL5H6Mgvjr+DBeg=; b=E6Nc4/TBwJlUonNjGN/swwso23h6rqkJ/YSvKub2uA0MW/mqFbIvadPBPFS0jUMJK9 Cx9ZLaDLwLQWpx7aS5doADNj5By5kY61kcDzPE1PaIYNbHrHnn3yx+vpdJhnqfLd2fQx wKbVRsw73bJaXrL5GRA27TboieFnK8wTZ03GcsJCEN3jNL17Z18Xhxec+yen4jgNMsNR qVIvHJw3OY0FqWJAKcwEajV5wr2uxhjJP8V/OwnqMKoZyTJyZyg+S4YViQ+mg/L4S9nJ POolPSYDjAB1kkFv9X61YBq3rWlIanMI/YpaFccecBNUF9RcvtZ9hoUCJMjxmw7oPFFB OqHg== X-Gm-Message-State: AJIora/k6rup3QjSDEZ5Ch2Q1+UlOIQdywcExnJPnTt06RRCdRnLQs60 wmRXGCf9BzKsYb85xpVD5SBE6Fj2SoK0ghgI X-Google-Smtp-Source: AGRyM1tCan3BBrUZzheO/PnNwQsZRud8nxRk7BOwHC10yfBPz51Jrhi4Fs7l/eUEB/L6RC374cyqng== X-Received: by 2002:a05:6000:885:b0:21b:a423:172c with SMTP id ca5-20020a056000088500b0021ba423172cmr23743138wrb.98.1657659240667; Tue, 12 Jul 2022 13:54:00 -0700 (PDT) Received: from localhost.localdomain ([185.126.107.38]) by smtp.gmail.com with ESMTPSA id b18-20020a05600c4e1200b0039c5cecf206sm105902wmq.4.2022.07.12.13.53.59 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 12 Jul 2022 13:54:00 -0700 (PDT) To: qemu-devel@nongnu.org Cc: Aurelien Jarno , Jiaxun Yang , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , =?utf-8?q?Alex_Benn=C3=A9e?= , Aleksandar Rikalo , Pavel Dovgalyuk , Pavel Dovgalyuk , Richard Henderson Subject: [PULL 02/12] target/mips: implement Octeon-specific BBIT instructions Date: Tue, 12 Jul 2022 22:53:37 +0200 Message-Id: <20220712205347.58372-3-f4bug@amsat.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220712205347.58372-1-f4bug@amsat.org> References: <20220712205347.58372-1-f4bug@amsat.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wr1-x433.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Original-From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= via From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= From: Pavel Dovgalyuk This patch introduces Octeon-specific decoder and implements check-bit-and-jump instructions. Signed-off-by: Pavel Dovgalyuk Reviewed-by: Richard Henderson Message-Id: <165572672705.167724.16667636081912075906.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé --- target/mips/tcg/octeon.decode | 9 +++++++++ target/mips/tcg/octeon_translate.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/target/mips/tcg/octeon.decode b/target/mips/tcg/octeon.decode index b21c735a6c..8062715578 100644 --- a/target/mips/tcg/octeon.decode +++ b/target/mips/tcg/octeon.decode @@ -4,3 +4,12 @@ # # SPDX-License-Identifier: LGPL-2.1-or-later # + +# Branch on bit set or clear +# BBIT0 110010 ..... ..... ................ +# BBIT032 110110 ..... ..... ................ +# BBIT1 111010 ..... ..... ................ +# BBIT132 111110 ..... ..... ................ + +%bbit_p 28:1 16:5 +BBIT 11 set:1 . 10 rs:5 ..... offset:16 p=%bbit_p diff --git a/target/mips/tcg/octeon_translate.c b/target/mips/tcg/octeon_translate.c index 8b5eb1a823..1558f74a8e 100644 --- a/target/mips/tcg/octeon_translate.c +++ b/target/mips/tcg/octeon_translate.c @@ -14,3 +14,33 @@ /* Include the auto-generated decoder. */ #include "decode-octeon.c.inc" + +static bool trans_BBIT(DisasContext *ctx, arg_BBIT *a) +{ + TCGv p; + + if (ctx->hflags & MIPS_HFLAG_BMASK) { + LOG_DISAS("Branch in delay / forbidden slot at PC 0x" + TARGET_FMT_lx "\n", ctx->base.pc_next); + generate_exception_end(ctx, EXCP_RI); + return true; + } + + /* Load needed operands */ + TCGv t0 = tcg_temp_new(); + gen_load_gpr(t0, a->rs); + + p = tcg_constant_tl(1ULL << a->p); + if (a->set) { + tcg_gen_and_tl(bcond, p, t0); + } else { + tcg_gen_andc_tl(bcond, p, t0); + } + + ctx->hflags |= MIPS_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + 4 + a->offset * 4; + ctx->hflags |= MIPS_HFLAG_BDS32; + + tcg_temp_free(t0); + return true; +}