From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2615 invoked by alias); 12 Apr 2010 19:03:11 -0000 Received: (qmail 2421 invoked by uid 48); 12 Apr 2010 19:03:09 -0000 Date: Mon, 12 Apr 2010 19:03:00 -0000 Message-ID: <20100412190309.2419.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug libgcj/40860] [4.4/4.5/4.6 regression] regressions in libjava testsuite on arm-linux In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: java-prs@gcc.gnu.org From: "mikpe at it dot uu dot se" Mailing-List: contact java-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: java-prs-owner@gcc.gnu.org X-SW-Source: 2010-q2/txt/msg00002.txt.bz2 ------- Comment #34 from mikpe at it dot uu dot se 2010-04-12 19:03 ------- Created an attachment (id=20371) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20371&action=view) eliminate use of _Unwind_GetRegionStart on ARM, take 2 The previous patch to eliminate _Unwind_GetRegionStart on ARM suffered from major misalignment exceptions. The function pointers in the @LPStart fields weren't resolved by the linker but apparently required runtime fixup by glibc. Since they are always misaligned (the LSDA blob starts aligned with a format byte followed by the @LPStart pointer), each @LPStart value resulted in two alignment exceptions. Ouch. The new version of the patch makes the @LPStart pointers PC-relative which eliminates the runtime fixups and thus the alignment exceptions. -- mikpe at it dot uu dot se changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #20333|0 |1 is obsolete| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40860