From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932686Ab1ISWNQ (ORCPT ); Mon, 19 Sep 2011 18:13:16 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:60724 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932258Ab1ISWNP (ORCPT ); Mon, 19 Sep 2011 18:13:15 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6474"; a="119911948" From: Laura Abbott To: linux@arm.linux.org.uk, catalin.marinas@arm.com Cc: Laura Abbott , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] arm: Add unwinding annotations for 64bit division functions Date: Mon, 19 Sep 2011 15:11:37 -0700 Message-Id: <1316470297-5063-1-git-send-email-lauraa@codeaurora.org> X-Mailer: git-send-email 1.7.3.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The 64bit division functions never had unwinding annotations added. This prevents a backtrace from being printed within the function and if a division by 0 occurs. Add the annotations. Signed-off-by: Laura Abbott --- arch/arm/lib/div64.S | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/arm/lib/div64.S b/arch/arm/lib/div64.S index faa7748..e55c484 100644 --- a/arch/arm/lib/div64.S +++ b/arch/arm/lib/div64.S @@ -13,6 +13,7 @@ */ #include +#include #ifdef __ARMEB__ #define xh r0 @@ -44,6 +45,7 @@ */ ENTRY(__do_div64) +UNWIND(.fnstart) @ Test for easy paths first. subs ip, r4, #1 @@ -189,7 +191,12 @@ ENTRY(__do_div64) moveq yh, xh moveq xh, #0 moveq pc, lr +UNWIND(.fnend) +UNWIND(.fnstart) +UNWIND(.pad #4) +UNWIND(.save {lr}) +Ldiv0_64: @ Division by 0: str lr, [sp, #-8]! bl __div0 @@ -200,4 +207,5 @@ ENTRY(__do_div64) mov xh, #0 ldr pc, [sp], #8 +UNWIND(.fnend) ENDPROC(__do_div64) -- 1.7.3.3