Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946112AbaGRSaV (ORCPT ); Fri, 18 Jul 2014 14:30:21 -0400 Received: from mail-pd0-f175.google.com ([209.85.192.175]:57667 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946003AbaGRS2r (ORCPT ); Fri, 18 Jul 2014 14:28:47 -0400 From: Zi Shen Lim To: Catalin Marinas , Will Deacon , Jiang Liu , AKASHI Takahiro , "David S. Miller" , Daniel Borkmann , Alexei Starovoitov Cc: Zi Shen Lim , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org Subject: [PATCH 10/14] arm64: introduce aarch64_insn_gen_data1() Date: Fri, 18 Jul 2014 11:28:16 -0700 Message-Id: <1405708100-13604-11-git-send-email-zlim.lnx@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1405708100-13604-1-git-send-email-zlim.lnx@gmail.com> References: <1405708100-13604-1-git-send-email-zlim.lnx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 d7a4dd4..81ef3b5 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -747,3 +747,40 @@ 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 |= AARCH64_INSN_SF_BIT; + 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); +} -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/