From patchwork Tue Jul 15 06:25:08 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: 4551321 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 334869F1D6 for ; Tue, 15 Jul 2014 06:28:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 67C8820158 for ; Tue, 15 Jul 2014 06:28:29 +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 9FD2020155 for ; Tue, 15 Jul 2014 06:28:28 +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 1X6wCI-0003QE-Lf; Tue, 15 Jul 2014 06:26:42 +0000 Received: from mail-pd0-x234.google.com ([2607:f8b0:400e:c02::234]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1X6wBb-000321-3K for linux-arm-kernel@lists.infradead.org; Tue, 15 Jul 2014 06:25:59 +0000 Received: by mail-pd0-f180.google.com with SMTP id y13so4295689pdi.39 for ; Mon, 14 Jul 2014 23:25:43 -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=ULoxces6cAQ8Vzw4xmWC2boky1QAvdwenyneX0XT7mQ=; b=VKuntPB0DArMOmKza5hLUsR8fe1FISP4TAKNp5f4cQF1K0T14/VeC7MjhsUE9FqyPr Jj9ejWD/34GYaWCoos6XJdkUYk/tb4NZ87pZHpJ95qOUTSezU2bworY54A9q/KvA2obv esXgXu5EwRezU9sZyAReiFW9oozUBdsVv0Q7p5hn/bK40INKubwMq77UL5GbpvsGq3ZZ B9LMTWvAKnrgmMpterTd35ayuoYV6uQj7SSN8duq5BWdm3ImaHFOzNSBIEIpwhNxES0r z88RcXwmo3Wpb39q3MUNjDxj/gtAls46ZkG8NaCrCy+dH+o99vTeaEhFkB13UsMXL8Kh R3Mg== X-Received: by 10.68.131.230 with SMTP id op6mr21093442pbb.55.1405405543338; Mon, 14 Jul 2014 23:25:43 -0700 (PDT) Received: from gup76.hsd1.ca.comcast.net ([98.234.176.204]) by mx.google.com with ESMTPSA id co3sm12773645pbb.89.2014.07.14.23.25.42 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 14 Jul 2014 23:25:42 -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 10/14] arm64: introduce aarch64_insn_gen_data1() Date: Mon, 14 Jul 2014 23:25:08 -0700 Message-Id: <1405405512-4423-11-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_232559_178334_8395341E X-CRM114-Status: UNSURE ( 9.67 ) 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 (1 source) instructions. Signed-off-by: Zi Shen Lim --- arch/arm64/include/asm/insn.h | 13 +++++++++++++ arch/arm64/kernel/insn.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h index c0a765d..246d214 100644 --- a/arch/arm64/include/asm/insn.h +++ b/arch/arm64/include/asm/insn.h @@ -185,6 +185,12 @@ enum aarch64_insn_bitfield_type { AARCH64_INSN_BITFIELD_MOVE_SIGNED }; +enum aarch64_insn_data1_type { + AARCH64_INSN_DATA1_REVERSE_16, + AARCH64_INSN_DATA1_REVERSE_32, + AARCH64_INSN_DATA1_REVERSE_64, +}; + #define __AARCH64_INSN_FUNCS(abbr, mask, val) \ static __always_inline bool aarch64_insn_is_##abbr(u32 code) \ { return (code & (mask)) == (val); } \ @@ -211,6 +217,9 @@ __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(rev16, 0x7FFFFC00, 0x5AC00400) +__AARCH64_INSN_FUNCS(rev32, 0x7FFFFC00, 0x5AC00800) +__AARCH64_INSN_FUNCS(rev64, 0x7FFFFC00, 0x5AC00C00) __AARCH64_INSN_FUNCS(b, 0xFC000000, 0x14000000) __AARCH64_INSN_FUNCS(bl, 0xFC000000, 0x94000000) __AARCH64_INSN_FUNCS(cbz, 0xFE000000, 0x34000000) @@ -276,6 +285,10 @@ u32 aarch64_insn_gen_add_sub_shifted_reg(enum aarch64_insn_register dst, int shift, enum aarch64_insn_variant variant, enum aarch64_insn_adsb_type type); +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); 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 e24cb13..49a9528 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -745,3 +745,40 @@ u32 aarch64_insn_gen_add_sub_shifted_reg(enum aarch64_insn_register dst, return aarch64_insn_encode_immediate(AARCH64_INSN_IMM_6, insn, shift); } + +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 insn; + + switch (type) { + case AARCH64_INSN_DATA1_REVERSE_16: + insn = aarch64_insn_get_rev16_value(); + break; + case AARCH64_INSN_DATA1_REVERSE_32: + insn = aarch64_insn_get_rev32_value(); + break; + case AARCH64_INSN_DATA1_REVERSE_64: + BUG_ON(variant != AARCH64_INSN_VARIANT_64BIT); + insn = aarch64_insn_get_rev64_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); + + return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RN, insn, src); +}