From patchwork Tue Jul 18 21:11:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13317714 X-Patchwork-Delegate: bhelgaas@google.com 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2CEACEB64DD for ; Tue, 18 Jul 2023 21:11:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231209AbjGRVL5 (ORCPT ); Tue, 18 Jul 2023 17:11:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230350AbjGRVLx (ORCPT ); Tue, 18 Jul 2023 17:11:53 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7122C0; Tue, 18 Jul 2023 14:11:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689714712; x=1721250712; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=A6YP9TxD6vGbHE6fwGQXgx3yzQNMpeHCGRM/JjRREbQ=; b=UdkMCd7y3tNZhLv7jh27jr52I/CGQM+ldsNmlu/q79i/9sv0TMyZAsqB o/PNpaoujr+ifwsMbo8AQWPwTq6netWF89YEJ1MpEB7FQlCsMPu8S1Em5 BkPvh9+eLn2cFiTyzDb2O8ghnBTmeYhR5dcP2JFqWABM12ProPkf74j4m +Zghajdwv57+o8JFoz5gKroYdy9Xeq33l31sEla6kJgSP3I0T/etAAn/1 NaNscLJ7vwmlP29iyOx3bFG73YkOwh0u2QDLSHWJKkHsTnZgLtfWWmWOP uD/7nn+A+Knae6BQ1C0eOF4YZu0fZElxOg5CYpKLLG9tDsqQSvF6AEbl9 A==; X-IronPort-AV: E=McAfee;i="6600,9927,10775"; a="432495824" X-IronPort-AV: E=Sophos;i="6.01,215,1684825200"; d="scan'208";a="432495824" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jul 2023 14:11:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10775"; a="753469038" X-IronPort-AV: E=Sophos;i="6.01,215,1684825200"; d="scan'208";a="753469038" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga008.jf.intel.com with ESMTP; 18 Jul 2023 14:11:42 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id CEA58370; Wed, 19 Jul 2023 00:11:49 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , Shuah Khan , David Gow , Daniel Latypov , "Steven Rostedt (Google)" , Bjorn Helgaas , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Brendan Higgins , Mark Rutland , Lorenzo Pieralisi , Sudeep Holla , Masami Hiramatsu , Andrew Morton Subject: [PATCH v4 3/4] arm64: smccc: Replace custom COUNT_ARGS() & CONCATENATE() implementations Date: Wed, 19 Jul 2023 00:11:46 +0300 Message-Id: <20230718211147.18647-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.40.0.1.gaa8946217a0b In-Reply-To: <20230718211147.18647-1-andriy.shevchenko@linux.intel.com> References: <20230718211147.18647-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Replace custom implementation of the macros from args.h. Signed-off-by: Andy Shevchenko --- include/linux/arm-smccc.h | 69 ++++++++++++++++++--------------------- 1 file changed, 32 insertions(+), 37 deletions(-) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index f196c19f8e55..7c67c17321d4 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -5,6 +5,7 @@ #ifndef __LINUX_ARM_SMCCC_H #define __LINUX_ARM_SMCCC_H +#include #include #include @@ -413,31 +414,26 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, #endif -#define ___count_args(_0, _1, _2, _3, _4, _5, _6, _7, _8, x, ...) x +#define __constraint_read_2 "r" (arg0) +#define __constraint_read_3 __constraint_read_2, "r" (arg1) +#define __constraint_read_4 __constraint_read_3, "r" (arg2) +#define __constraint_read_5 __constraint_read_4, "r" (arg3) +#define __constraint_read_6 __constraint_read_5, "r" (arg4) +#define __constraint_read_7 __constraint_read_6, "r" (arg5) +#define __constraint_read_8 __constraint_read_7, "r" (arg6) +#define __constraint_read_9 __constraint_read_8, "r" (arg7) -#define __count_args(...) \ - ___count_args(__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0) - -#define __constraint_read_0 "r" (arg0) -#define __constraint_read_1 __constraint_read_0, "r" (arg1) -#define __constraint_read_2 __constraint_read_1, "r" (arg2) -#define __constraint_read_3 __constraint_read_2, "r" (arg3) -#define __constraint_read_4 __constraint_read_3, "r" (arg4) -#define __constraint_read_5 __constraint_read_4, "r" (arg5) -#define __constraint_read_6 __constraint_read_5, "r" (arg6) -#define __constraint_read_7 __constraint_read_6, "r" (arg7) - -#define __declare_arg_0(a0, res) \ +#define __declare_arg_2(a0, res) \ struct arm_smccc_res *___res = res; \ register unsigned long arg0 asm("r0") = (u32)a0 -#define __declare_arg_1(a0, a1, res) \ +#define __declare_arg_3(a0, a1, res) \ typeof(a1) __a1 = a1; \ struct arm_smccc_res *___res = res; \ register unsigned long arg0 asm("r0") = (u32)a0; \ register typeof(a1) arg1 asm("r1") = __a1 -#define __declare_arg_2(a0, a1, a2, res) \ +#define __declare_arg_4(a0, a1, a2, res) \ typeof(a1) __a1 = a1; \ typeof(a2) __a2 = a2; \ struct arm_smccc_res *___res = res; \ @@ -445,7 +441,7 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, register typeof(a1) arg1 asm("r1") = __a1; \ register typeof(a2) arg2 asm("r2") = __a2 -#define __declare_arg_3(a0, a1, a2, a3, res) \ +#define __declare_arg_5(a0, a1, a2, a3, res) \ typeof(a1) __a1 = a1; \ typeof(a2) __a2 = a2; \ typeof(a3) __a3 = a3; \ @@ -455,34 +451,26 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, register typeof(a2) arg2 asm("r2") = __a2; \ register typeof(a3) arg3 asm("r3") = __a3 -#define __declare_arg_4(a0, a1, a2, a3, a4, res) \ +#define __declare_arg_6(a0, a1, a2, a3, a4, res) \ typeof(a4) __a4 = a4; \ - __declare_arg_3(a0, a1, a2, a3, res); \ + __declare_arg_5(a0, a1, a2, a3, res); \ register typeof(a4) arg4 asm("r4") = __a4 -#define __declare_arg_5(a0, a1, a2, a3, a4, a5, res) \ +#define __declare_arg_7(a0, a1, a2, a3, a4, a5, res) \ typeof(a5) __a5 = a5; \ - __declare_arg_4(a0, a1, a2, a3, a4, res); \ + __declare_arg_6(a0, a1, a2, a3, a4, res); \ register typeof(a5) arg5 asm("r5") = __a5 -#define __declare_arg_6(a0, a1, a2, a3, a4, a5, a6, res) \ +#define __declare_arg_8(a0, a1, a2, a3, a4, a5, a6, res) \ typeof(a6) __a6 = a6; \ - __declare_arg_5(a0, a1, a2, a3, a4, a5, res); \ + __declare_arg_7(a0, a1, a2, a3, a4, a5, res); \ register typeof(a6) arg6 asm("r6") = __a6 -#define __declare_arg_7(a0, a1, a2, a3, a4, a5, a6, a7, res) \ +#define __declare_arg_9(a0, a1, a2, a3, a4, a5, a6, a7, res) \ typeof(a7) __a7 = a7; \ - __declare_arg_6(a0, a1, a2, a3, a4, a5, a6, res); \ + __declare_arg_8(a0, a1, a2, a3, a4, a5, a6, res); \ register typeof(a7) arg7 asm("r7") = __a7 -#define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__) -#define __declare_args(count, ...) ___declare_args(count, __VA_ARGS__) - -#define ___constraints(count) \ - : __constraint_read_ ## count \ - : smccc_sve_clobbers "memory" -#define __constraints(count) ___constraints(count) - /* * We have an output list that is not necessarily used, and GCC feels * entitled to optimise the whole sequence away. "volatile" is what @@ -494,11 +482,14 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, register unsigned long r1 asm("r1"); \ register unsigned long r2 asm("r2"); \ register unsigned long r3 asm("r3"); \ - __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \ + CONCATENATE(__declare_arg_, \ + COUNT_ARGS(__VA_ARGS__))(__VA_ARGS__); \ asm volatile(SMCCC_SVE_CHECK \ inst "\n" : \ "=r" (r0), "=r" (r1), "=r" (r2), "=r" (r3) \ - __constraints(__count_args(__VA_ARGS__))); \ + : CONCATENATE(__constraint_read_, \ + COUNT_ARGS(__VA_ARGS__)) \ + : smccc_sve_clobbers "memory"); \ if (___res) \ *___res = (typeof(*___res)){r0, r1, r2, r3}; \ } while (0) @@ -542,8 +533,12 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, */ #define __fail_smccc_1_1(...) \ do { \ - __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \ - asm ("" : __constraints(__count_args(__VA_ARGS__))); \ + CONCATENATE(__declare_arg_, \ + COUNT_ARGS(__VA_ARGS__))(__VA_ARGS__); \ + asm ("" : \ + : CONCATENATE(__constraint_read_, \ + COUNT_ARGS(__VA_ARGS__)) \ + : smccc_sve_clobbers "memory"); \ if (___res) \ ___res->a0 = SMCCC_RET_NOT_SUPPORTED; \ } while (0)