From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2379 invoked by alias); 15 Mar 2014 20:15:55 -0000 Mailing-List: contact ecos-patches-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: ecos-patches-owner@ecos.sourceware.org Received: (qmail 2354 invoked by uid 89); 15 Mar 2014 20:15:52 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.5 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.2 X-HELO: mail.ecoscentric.com Received: from hagrid.ecoscentric.com (HELO mail.ecoscentric.com) (212.13.207.197) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Sat, 15 Mar 2014 20:15:51 +0000 Received: from localhost (hagrid.ecoscentric.com [127.0.0.1]) by mail.ecoscentric.com (Postfix) with ESMTP id DB0494680007 for ; Sat, 15 Mar 2014 20:15:47 +0000 (GMT) Received: from mail.ecoscentric.com ([127.0.0.1]) by localhost (hagrid.ecoscentric.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hMb8-fGEEuwv; Sat, 15 Mar 2014 20:15:43 +0000 (GMT) From: bugzilla-daemon@bugs.ecos.sourceware.org To: ecos-patches@ecos.sourceware.org Subject: [Bug 1001959] ARM call-graph profiling Date: Sat, 15 Mar 2014 20:15:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: eCos X-Bugzilla-Component: Patches and contributions X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: john@dallaway.org.uk X-Bugzilla-Status: NEW X-Bugzilla-Priority: low X-Bugzilla-Assigned-To: unassigned@bugs.ecos.sourceware.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.ecos.sourceware.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-03/txt/msg00015.txt.bz2 Please do not reply to this email, use the link below. http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001959 --- Comment #2 from John Dallaway --- (In reply to comment #1) > Just for my education (should have asked in bug 1001954 a week ago): When > using hardware FP, do we need to also put FPU registers? Ilija, by inspection, we know that the mcount functions do not use any FP registers. These functions call __profile_mcount() which is self-contained and does not perform any floating point calculations. So there is no possibility that function arguments passed in FP registers will be modified within the call to mcount() or __gnu_mcount_nc() and therefore no need for the mcount functions to save/restore FP registers. -- You are receiving this mail because: You are on the CC list for the bug.