From patchwork Sun Nov 13 22:30:21 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Botcazou X-Patchwork-Id: 81979 Delivered-To: patch@linaro.org Received: by 10.140.97.165 with SMTP id m34csp755670qge; Sun, 13 Nov 2016 14:30:56 -0800 (PST) X-Received: by 10.99.169.25 with SMTP id u25mr23849870pge.6.1479076256470; Sun, 13 Nov 2016 14:30:56 -0800 (PST) Return-Path: Received: from sourceware.org (server1.sourceware.org. [209.132.180.131]) by mx.google.com with ESMTPS id e1si19841797pfb.241.2016.11.13.14.30.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 13 Nov 2016 14:30:56 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-return-441267-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org; spf=pass (google.com: domain of gcc-patches-return-441267-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) smtp.mailfrom=gcc-patches-return-441267-patch=linaro.org@gcc.gnu.org DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:subject:date:message-id:mime-version:content-type :content-transfer-encoding; q=dns; s=default; b=lzSvH39/k7UkM4uU dYPzbavGQ3m1y0C1iVrW/fqlG+74XWcokdq4+6w8rrsDr9XznAOHpevV/iQJ2h7f GyHDlBPnyqNKLsf3T9Ku+ZkREhBirKxu+CObzw1uXzRfLAmq4aci5V8+/ioefjF1 4TNCyxCBt5q9lGfJ3U7V4zRZ+Lc= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:subject:date:message-id:mime-version:content-type :content-transfer-encoding; s=default; bh=Ib71G6HXtTKG5wHruPggOV 6IiUU=; b=Ctlie6ODdMkKdKRrXAUzs2Q0yASNKti8l/E7rSfzr0YA3Gl16r1BNZ fcDeZWjy0UKnBusW4Z9+V0MNQy+pjKc22aa/egjJyNVBXtPysBGCe0EHZoWuKkuY pObgEn6+hIDxThAvQrUkUc9n2elhV/Cgr99RV8PxLjpH5VxLGikh0= Received: (qmail 19197 invoked by alias); 13 Nov 2016 22:30:39 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 19152 invoked by uid 89); 13 Nov 2016 22:30:38 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.8 required=5.0 tests=AWL, BAYES_00, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=gtaarch64h, UD:gt-aarch64.h, reserves, 145026 X-HELO: smtp.eu.adacore.com Received: from mel.act-europe.fr (HELO smtp.eu.adacore.com) (194.98.77.210) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 13 Nov 2016 22:30:27 +0000 Received: from localhost (localhost [127.0.0.1]) by filtered-smtp.eu.adacore.com (Postfix) with ESMTP id 09363812EB for ; Sun, 13 Nov 2016 23:30:23 +0100 (CET) Received: from smtp.eu.adacore.com ([127.0.0.1]) by localhost (smtp.eu.adacore.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Xnfubrc1Mcjf for ; Sun, 13 Nov 2016 23:30:22 +0100 (CET) Received: from polaris.localnet (bon31-6-88-161-99-133.fbx.proxad.net [88.161.99.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.eu.adacore.com (Postfix) with ESMTPSA id E0BC0812DD for ; Sun, 13 Nov 2016 23:30:22 +0100 (CET) From: Eric Botcazou To: gcc-patches@gcc.gnu.org Subject: [Aarch64] Enable descriptors for nested functions in Ada Date: Sun, 13 Nov 2016 23:30:21 +0100 Message-ID: <6039323.u0bOnZZyyN@polaris> User-Agent: KMail/4.14.10 (Linux/3.16.7-48-desktop; KDE/4.14.9; x86_64; ; ) MIME-Version: 1.0 Similarly to x86, PowerPC and SPARC, this enables the use of custom run-time descriptors in Ada, thus eliminating the need for trampolines and executable stack in presence of pointers to nested functions. Tested on Aarch64/Linux, OK for the mainline? 2016-11-13 Eric Botcazou PR ada/67205 * config/aarch64/aarch64.c (TARGET_CUSTOM_FUNCTION_DESCRIPTORS): Define. -- Eric Botcazou Index: config/aarch64/aarch64.c =================================================================== --- config/aarch64/aarch64.c (revision 242334) +++ config/aarch64/aarch64.c (working copy) @@ -14502,6 +14502,10 @@ aarch64_optab_supported_p (int op, machi #undef TARGET_OMIT_STRUCT_RETURN_REG #define TARGET_OMIT_STRUCT_RETURN_REG true +/* The architecture reserves bits 0 and 1 so use bit 2 for descriptors. */ +#undef TARGET_CUSTOM_FUNCTION_DESCRIPTORS +#define TARGET_CUSTOM_FUNCTION_DESCRIPTORS 4 + struct gcc_target targetm = TARGET_INITIALIZER; #include "gt-aarch64.h"