From patchwork Tue Jul 15 06:25:11 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: 4551411 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 217A4C0514 for ; Tue, 15 Jul 2014 06:29:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3CF2C2017E for ; Tue, 15 Jul 2014 06:29:24 +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 5120F20172 for ; Tue, 15 Jul 2014 06:29:23 +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 1X6wDI-0004V0-DB; Tue, 15 Jul 2014 06:27:44 +0000 Received: from mail-pa0-x236.google.com ([2607:f8b0:400e:c03::236]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1X6wBk-000324-BQ for linux-arm-kernel@lists.infradead.org; Tue, 15 Jul 2014 06:26:08 +0000 Received: by mail-pa0-f54.google.com with SMTP id fa1so3344326pad.27 for ; Mon, 14 Jul 2014 23:25:47 -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=VAY1q9sw483UtQhZI0m0Fi/pZcY6Zqg61pepgM6s1Uc=; b=xmvfFOFxHY2SjJkkYUOKynv5ut/ny0E5FYFHuf0Bnltj/1OE1TW+Bc7tj3gJMK9RA1 hMDXMlXVQBJz3bOIaJd9mjxok5+HIq3Y0yMUuZAWP3Z4CfnwIH3d2KOHvEl5hq8srhmD LKSBzYW8s0JqxrK+3/qzE5YRqV/gpuyexbLaBlRjcWIlxB1AuBpwrRCEVhQ/snfMXcV9 fXc4Gd8vkgMnt1UWOrvXWkr+O6otmyR24wlvB1T0n2Bbzob4wk437ZyhQ9zyGm7BU/yQ y1GL8Pb3vsD4xwfm25RfJyx1HHHhQy+mOwrJP0G+PEUG496zSQt49KmNRyfZnXB6GV5m I3Mw== X-Received: by 10.70.37.129 with SMTP id y1mr16291736pdj.12.1405405547091; Mon, 14 Jul 2014 23:25:47 -0700 (PDT) Received: from gup76.hsd1.ca.comcast.net ([98.234.176.204]) by mx.google.com with ESMTPSA id co3sm12773645pbb.89.2014.07.14.23.25.45 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 14 Jul 2014 23:25:46 -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 13/14] arm64: introduce aarch64_insn_gen_logical_shifted_reg() Date: Mon, 14 Jul 2014 23:25:11 -0700 Message-Id: <1405405512-4423-14-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_232608_411484_CA7209D7 X-CRM114-Status: GOOD ( 10.14 ) 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 logical (shifted register) instructions. Signed-off-by: Zi Shen Lim --- arch/arm64/include/asm/insn.h | 25 ++++++++++++++++++ arch/arm64/kernel/insn.c | 60 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 85 insertions(+) diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h index 36e8465..56a9e63 100644 --- a/arch/arm64/include/asm/insn.h +++ b/arch/arm64/include/asm/insn.h @@ -206,6 +206,17 @@ enum aarch64_insn_data3_type { AARCH64_INSN_DATA3_MSUB, }; +enum aarch64_insn_logic_type { + AARCH64_INSN_LOGIC_AND, + AARCH64_INSN_LOGIC_BIC, + AARCH64_INSN_LOGIC_ORR, + AARCH64_INSN_LOGIC_ORN, + AARCH64_INSN_LOGIC_EOR, + AARCH64_INSN_LOGIC_EON, + AARCH64_INSN_LOGIC_AND_SETFLAGS, + AARCH64_INSN_LOGIC_BIC_SETFLAGS +}; + #define __AARCH64_INSN_FUNCS(abbr, mask, val) \ static __always_inline bool aarch64_insn_is_##abbr(u32 code) \ { return (code & (mask)) == (val); } \ @@ -243,6 +254,14 @@ __AARCH64_INSN_FUNCS(rorv, 0x7FE0FC00, 0x1AC02C00) __AARCH64_INSN_FUNCS(rev16, 0x7FFFFC00, 0x5AC00400) __AARCH64_INSN_FUNCS(rev32, 0x7FFFFC00, 0x5AC00800) __AARCH64_INSN_FUNCS(rev64, 0x7FFFFC00, 0x5AC00C00) +__AARCH64_INSN_FUNCS(and, 0x7F200000, 0x0A000000) +__AARCH64_INSN_FUNCS(bic, 0x7F200000, 0x0A200000) +__AARCH64_INSN_FUNCS(orr, 0x7F200000, 0x2A000000) +__AARCH64_INSN_FUNCS(orn, 0x7F200000, 0x2A200000) +__AARCH64_INSN_FUNCS(eor, 0x7F200000, 0x4A000000) +__AARCH64_INSN_FUNCS(eon, 0x7F200000, 0x4A200000) +__AARCH64_INSN_FUNCS(ands, 0x7F200000, 0x6A000000) +__AARCH64_INSN_FUNCS(bics, 0x7F200000, 0x6A200000) __AARCH64_INSN_FUNCS(b, 0xFC000000, 0x14000000) __AARCH64_INSN_FUNCS(bl, 0xFC000000, 0x94000000) __AARCH64_INSN_FUNCS(cbz, 0xFE000000, 0x34000000) @@ -323,6 +342,12 @@ u32 aarch64_insn_gen_data3(enum aarch64_insn_register dst, enum aarch64_insn_register reg2, enum aarch64_insn_variant variant, enum aarch64_insn_data3_type type); +u32 aarch64_insn_gen_logical_shifted_reg(enum aarch64_insn_register dst, + enum aarch64_insn_register src, + enum aarch64_insn_register reg, + int shift, + enum aarch64_insn_variant variant, + enum aarch64_insn_logic_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 01664e3..22b07dc 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -872,3 +872,63 @@ u32 aarch64_insn_gen_data3(enum aarch64_insn_register dst, return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RM, insn, reg2); } + +u32 aarch64_insn_gen_logical_shifted_reg(enum aarch64_insn_register dst, + enum aarch64_insn_register src, + enum aarch64_insn_register reg, + int shift, + enum aarch64_insn_variant variant, + enum aarch64_insn_logic_type type) +{ + u32 insn; + + switch (type) { + case AARCH64_INSN_LOGIC_AND: + insn = aarch64_insn_get_and_value(); + break; + case AARCH64_INSN_LOGIC_BIC: + insn = aarch64_insn_get_bic_value(); + break; + case AARCH64_INSN_LOGIC_ORR: + insn = aarch64_insn_get_orr_value(); + break; + case AARCH64_INSN_LOGIC_ORN: + insn = aarch64_insn_get_orn_value(); + break; + case AARCH64_INSN_LOGIC_EOR: + insn = aarch64_insn_get_eor_value(); + break; + case AARCH64_INSN_LOGIC_EON: + insn = aarch64_insn_get_eon_value(); + break; + case AARCH64_INSN_LOGIC_AND_SETFLAGS: + insn = aarch64_insn_get_ands_value(); + break; + case AARCH64_INSN_LOGIC_BIC_SETFLAGS: + insn = aarch64_insn_get_bics_value(); + break; + default: + BUG_ON(1); + } + + switch (variant) { + case AARCH64_INSN_VARIANT_32BIT: + BUG_ON(shift < 0 || shift > 31); + break; + case AARCH64_INSN_VARIANT_64BIT: + insn |= BIT(31); + BUG_ON(shift < 0 || shift > 63); + 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); + + insn = aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RM, insn, reg); + + return aarch64_insn_encode_immediate(AARCH64_INSN_IMM_6, insn, shift); +}