From patchwork Tue Jul 15 06:25:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Shen Lim X-Patchwork-Id: 4551401 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6E4BC9F4BD for ; Tue, 15 Jul 2014 06:29:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8ABEE20179 for ; Tue, 15 Jul 2014 06:29:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A917920158 for ; Tue, 15 Jul 2014 06:29:07 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1X6wD9-0004Ji-P4; Tue, 15 Jul 2014 06:27:35 +0000 Received: from mail-pd0-x22e.google.com ([2607:f8b0:400e:c02::22e]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1X6wBh-000322-D0 for linux-arm-kernel@lists.infradead.org; Tue, 15 Jul 2014 06:26:05 +0000 Received: by mail-pd0-f174.google.com with SMTP id fp1so3161440pdb.5 for ; Mon, 14 Jul 2014 23:25:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=8xptedu9V1VtPH0PIfHtLoeDNHjmXaaZT2y3gEb8Wwc=; b=jjYv/gnKYP119+AHUqhYJ084dm1b30vg9TGDTPCAZZ326f3r89vmYwTHyFmIqv9TTS Fzpfsw72WtcD/9KbCsrm1sx7Hpbm5liXpIek2Q64oiVhwbAtD7UgdvfLYBgtxWsoDrTI xA9xS4I+ITuq7vnp0VwYKxkkJ2M2JyvjC2bVaxisSaUcFJe78LQJlgJzIzVwZunZEKqc ao+dnecBLQZzDtWyLMEOu+38D6r9j2RUhfo14YWWO082S4v9oWnO10+fpFpygry969aX aC/DLEviLwCPT6DXOVlyDKCRjbWsCDW6XmboZgisRHPBdgrIP1wVE92DQLuWldkcie5t BBdA== X-Received: by 10.68.222.196 with SMTP id qo4mr21240533pbc.14.1405405544637; Mon, 14 Jul 2014 23:25:44 -0700 (PDT) Received: from gup76.hsd1.ca.comcast.net ([98.234.176.204]) by mx.google.com with ESMTPSA id co3sm12773645pbb.89.2014.07.14.23.25.43 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 14 Jul 2014 23:25:44 -0700 (PDT) From: Zi Shen Lim To: Catalin Marinas , Will Deacon , Jiang Liu , AKASHI Takahiro , "David S. Miller" , Daniel Borkmann , Alexei Starovoitov Subject: [PATCH RFCv3 11/14] arm64: introduce aarch64_insn_gen_data2() Date: Mon, 14 Jul 2014 23:25:09 -0700 Message-Id: <1405405512-4423-12-git-send-email-zlim.lnx@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1405405512-4423-1-git-send-email-zlim.lnx@gmail.com> References: <1405405512-4423-1-git-send-email-zlim.lnx@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140714_232605_479387_447BDF68 X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.8 (/) Cc: Zi Shen Lim , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce function to generate data-processing (2 source) instructions. Signed-off-by: Zi Shen Lim --- arch/arm64/include/asm/insn.h | 20 ++++++++++++++++++ arch/arm64/kernel/insn.c | 48 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h index 246d214..367245f 100644 --- a/arch/arm64/include/asm/insn.h +++ b/arch/arm64/include/asm/insn.h @@ -191,6 +191,15 @@ enum aarch64_insn_data1_type { AARCH64_INSN_DATA1_REVERSE_64, }; +enum aarch64_insn_data2_type { + AARCH64_INSN_DATA2_UDIV, + AARCH64_INSN_DATA2_SDIV, + AARCH64_INSN_DATA2_LSLV, + AARCH64_INSN_DATA2_LSRV, + AARCH64_INSN_DATA2_ASRV, + AARCH64_INSN_DATA2_RORV, +}; + #define __AARCH64_INSN_FUNCS(abbr, mask, val) \ static __always_inline bool aarch64_insn_is_##abbr(u32 code) \ { return (code & (mask)) == (val); } \ @@ -217,6 +226,12 @@ __AARCH64_INSN_FUNCS(add, 0x7F200000, 0x0B000000) __AARCH64_INSN_FUNCS(adds, 0x7F200000, 0x2B000000) __AARCH64_INSN_FUNCS(sub, 0x7F200000, 0x4B000000) __AARCH64_INSN_FUNCS(subs, 0x7F200000, 0x6B000000) +__AARCH64_INSN_FUNCS(udiv, 0x7FE0FC00, 0x1AC00800) +__AARCH64_INSN_FUNCS(sdiv, 0x7FE0FC00, 0x1AC00C00) +__AARCH64_INSN_FUNCS(lslv, 0x7FE0FC00, 0x1AC02000) +__AARCH64_INSN_FUNCS(lsrv, 0x7FE0FC00, 0x1AC02400) +__AARCH64_INSN_FUNCS(asrv, 0x7FE0FC00, 0x1AC02800) +__AARCH64_INSN_FUNCS(rorv, 0x7FE0FC00, 0x1AC02C00) __AARCH64_INSN_FUNCS(rev16, 0x7FFFFC00, 0x5AC00400) __AARCH64_INSN_FUNCS(rev32, 0x7FFFFC00, 0x5AC00800) __AARCH64_INSN_FUNCS(rev64, 0x7FFFFC00, 0x5AC00C00) @@ -289,6 +304,11 @@ u32 aarch64_insn_gen_data1(enum aarch64_insn_register dst, enum aarch64_insn_register src, enum aarch64_insn_variant variant, enum aarch64_insn_data1_type type); +u32 aarch64_insn_gen_data2(enum aarch64_insn_register dst, + enum aarch64_insn_register src, + enum aarch64_insn_register reg, + enum aarch64_insn_variant variant, + enum aarch64_insn_data2_type type); bool aarch64_insn_hotpatch_safe(u32 old_insn, u32 new_insn); diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 49a9528..7778b18 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -782,3 +782,51 @@ u32 aarch64_insn_gen_data1(enum aarch64_insn_register dst, return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RN, insn, src); } + +u32 aarch64_insn_gen_data2(enum aarch64_insn_register dst, + enum aarch64_insn_register src, + enum aarch64_insn_register reg, + enum aarch64_insn_variant variant, + enum aarch64_insn_data2_type type) +{ + u32 insn; + + switch (type) { + case AARCH64_INSN_DATA2_UDIV: + insn = aarch64_insn_get_udiv_value(); + break; + case AARCH64_INSN_DATA2_SDIV: + insn = aarch64_insn_get_sdiv_value(); + break; + case AARCH64_INSN_DATA2_LSLV: + insn = aarch64_insn_get_lslv_value(); + break; + case AARCH64_INSN_DATA2_LSRV: + insn = aarch64_insn_get_lsrv_value(); + break; + case AARCH64_INSN_DATA2_ASRV: + insn = aarch64_insn_get_asrv_value(); + break; + case AARCH64_INSN_DATA2_RORV: + insn = aarch64_insn_get_rorv_value(); + break; + default: + BUG_ON(1); + } + + switch (variant) { + case AARCH64_INSN_VARIANT_32BIT: + break; + case AARCH64_INSN_VARIANT_64BIT: + insn |= BIT(31); + break; + default: + BUG_ON(1); + } + + insn = aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RD, insn, dst); + + insn = aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RN, insn, src); + + return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RM, insn, reg); +}