From patchwork Sun Nov 13 22:31:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Botcazou X-Patchwork-Id: 81981 Delivered-To: patch@linaro.org Received: by 10.140.97.165 with SMTP id m34csp755908qge; Sun, 13 Nov 2016 14:31:52 -0800 (PST) X-Received: by 10.98.9.91 with SMTP id e88mr30089985pfd.72.1479076312534; Sun, 13 Nov 2016 14:31:52 -0800 (PST) Return-Path: Received: from sourceware.org (server1.sourceware.org. [209.132.180.131]) by mx.google.com with ESMTPS id f71si19853431pfe.260.2016.11.13.14.31.52 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 13 Nov 2016 14:31:52 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-return-441269-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-441269-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) smtp.mailfrom=gcc-patches-return-441269-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=ZKo5Ade9OuMd+BD/ SDCyWvrPafA8BEDT8wW03fHKF4fkLnR9KjaF/7+xMDKbTUjI+Aw65ulX3UpdkVvq gKSFnMkOpQY13SpW1fRelYuscSgJlyFXtfO+wGiv3bu8chj+aRg56nKuQPuN3G4C J4NRgM7iWLO495pj3grgNlPycf4= 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=jWgLI7zpJ+rM0kPJ+vGPUm 0VYjE=; b=H6BQE1LkEsphq5qVHpMidPzTfx2eg8HKyYz7rmMs6D2XlDcz25rA1F g0WScYDUtTv8dAkU60ak3eDlVNZZC1mmFa04HMPG5jh/a8ZwEQSWr6XH4H0V6MQW /2nO9iG4Ew5kbJJPEAYwZA6C1fxxzO0iutLxADjeNnnMuqDyrrB5U= Received: (qmail 22742 invoked by alias); 13 Nov 2016 22:31:38 -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 22730 invoked by uid 89); 13 Nov 2016 22:31:37 -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=Hx-languages-length:1136 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 22:31:31 +0000 Received: from localhost (localhost [127.0.0.1]) by filtered-smtp.eu.adacore.com (Postfix) with ESMTP id C89C7812EB for ; Sun, 13 Nov 2016 23:31:29 +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 0o7madhAB2s3 for ; Sun, 13 Nov 2016 23:31:29 +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 A7DC9812DD for ; Sun, 13 Nov 2016 23:31:29 +0100 (CET) From: Eric Botcazou To: gcc-patches@gcc.gnu.org Subject: [MIPS] Enable descriptors for nested functions in Ada Date: Sun, 13 Nov 2016 23:31:29 +0100 Message-ID: <1686875.o51Xv5tRQl@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. Unfortunately I don't have access to MIPS hardware any more, but the scheme was tested on the architecture at some point. OK for the mainline? 2016-11-13 Eric Botcazou PR ada/67205 * config/mips/mips.c (TARGET_CUSTOM_FUNCTION_DESCRIPTORS): Define. -- Eric Botcazou Index: config/mips/mips.c =================================================================== --- config/mips/mips.c (revision 242334) +++ config/mips/mips.c (working copy) @@ -22387,6 +22387,10 @@ mips_promote_function_mode (const_tree t #undef TARGET_HARD_REGNO_SCRATCH_OK #define TARGET_HARD_REGNO_SCRATCH_OK mips_hard_regno_scratch_ok +/* The architecture reserves bit 0 for MIPS16 so use bit 1 for descriptors. */ +#undef TARGET_CUSTOM_FUNCTION_DESCRIPTORS +#define TARGET_CUSTOM_FUNCTION_DESCRIPTORS 2 + struct gcc_target targetm = TARGET_INITIALIZER; #include "gt-mips.h"