From patchwork Sun Sep 26 20:53:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Noah Goldstein X-Patchwork-Id: 45454 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id C68423858426 for ; Sun, 26 Sep 2021 20:54:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C68423858426 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1632689660; bh=lbMr+EKX5loD3BMTB0Sb9EnoG7S/UMXUxL7XeyiTnh0=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=yiwZVdEzvKQiry+E6hCcWnM8cFE+X5AVypDgox1abxWfcbkW7IDPgUtydyR/We2L3 lhlgFLwt156QkaDhIjhGjyW3EQsCEI5o/bamys/4GiMlJpf7MGFB1qvYAc1bfASqSG TDWXs26o5LSiRE0Fxu0GNkKpgIriVY+VJmPp/YiE= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) by sourceware.org (Postfix) with ESMTPS id 2D07D3858423 for ; Sun, 26 Sep 2021 20:53:49 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 2D07D3858423 Received: by mail-io1-xd2c.google.com with SMTP id 134so20107551iou.12 for ; Sun, 26 Sep 2021 13:53:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=lbMr+EKX5loD3BMTB0Sb9EnoG7S/UMXUxL7XeyiTnh0=; b=X7LzXLYQS4y9eDE2N+EhPwRgYlhbbttFk8Cl3Ta4rjM19qKi0aghpwlqDeGE0qMSMh TOY/RYYOkflLArpCTg28G8mj5bHlzdWcffjiwj+cJWFyy1gMlICt8VMYV6lo5gPJa/Pk jg7F4hrlGrSxeKXqxeARqzDRnYhPmON0sa517ZeqnutAGpkreX2acdY7B1uZw1CyA9WX pZFzL56EaV1GqyDjE9Q1jIyLhTiluIGn9dNlIMudXZBZsmhWgkf1w1JCuWC4uJ6GS90B 1o30p4DAD6KBXjSOoL4EtKIM9d2/09Zy/tDEcPsFGvR+hoB+1J4yseQZTRAEGSipDjBX pIZQ== X-Gm-Message-State: AOAM5305bqsOXPnmhN1mj0FZYlQ+PYOr9cA7TQC4+R6/Bq4Fvp8twp7E YIT7ADY0mngUDcNoYo1w9ofFBFrU9KY= X-Google-Smtp-Source: ABdhPJwK7ynb5wbDBZW27Kwz6+Qow/Dcfm7PyS9HxqKGQwv9l3IpsKNmYrShGFSy8g7nRE/2+jTA8Q== X-Received: by 2002:a5e:c110:: with SMTP id v16mr18289433iol.43.1632689628481; Sun, 26 Sep 2021 13:53:48 -0700 (PDT) Received: from localhost.localdomain (node-17-161.flex.volo.net. [76.191.17.161]) by smtp.googlemail.com with ESMTPSA id c1sm7795300iot.44.2021.09.26.13.53.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Sep 2021 13:53:48 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH v1 2/3] x86: Modify ENTRY in sysdep.h so that p2align can be specified Date: Sun, 26 Sep 2021 15:53:06 -0500 Message-Id: <20210926205306.900081-2-goldstein.w.n@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210926205306.900081-1-goldstein.w.n@gmail.com> References: <20210926205306.900081-1-goldstein.w.n@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-11.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_STOCKGEN, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Noah Goldstein via Libc-alpha From: Noah Goldstein Reply-To: Noah Goldstein Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" No bug. This change adds a new macro ENTRY_P2ALIGN which takes a second argument, log2 of the desired function alignment. The old ENTRY(name) macro is just ENTRY_P2ALIGN(name, 4) so this doesn't affect any existing functionality. Signed-off-by: Noah Goldstein Reviewed-by: H.J. Lu --- Note this is a duplicate of: [v2,1/2] x86: Modify ENTRY in sysdep.h so that p2align can be specified https://patchwork.sourceware.org/project/glibc/patch/20210922051657.1655745-1-goldstein.w.n@gmail.com/ sysdeps/x86/sysdep.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/sysdeps/x86/sysdep.h b/sysdeps/x86/sysdep.h index cac1d762fb..937180c1bd 100644 --- a/sysdeps/x86/sysdep.h +++ b/sysdeps/x86/sysdep.h @@ -78,15 +78,18 @@ enum cf_protection_level #define ASM_SIZE_DIRECTIVE(name) .size name,.-name; /* Define an entry point visible from C. */ -#define ENTRY(name) \ +#define ENTRY_P2ALIGN(name, alignment) \ .globl C_SYMBOL_NAME(name); \ .type C_SYMBOL_NAME(name),@function; \ - .align ALIGNARG(4); \ + .align ALIGNARG(alignment); \ C_LABEL(name) \ cfi_startproc; \ _CET_ENDBR; \ CALL_MCOUNT +/* Common entry 16 byte aligns. */ +#define ENTRY(name) ENTRY_P2ALIGN (name, 4) + #undef END #define END(name) \ cfi_endproc; \