Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757407Ab3JJPtM (ORCPT ); Thu, 10 Oct 2013 11:49:12 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:52918 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757390Ab3JJPtI (ORCPT ); Thu, 10 Oct 2013 11:49:08 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Ard Biesheuvel , Russell King , Kamal Mostafa Subject: [PATCH 060/104] ARM: 7837/3: fix Thumb-2 bug in AES assembler code Date: Thu, 10 Oct 2013 08:41:48 -0700 Message-Id: <1381419752-29733-61-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1381419752-29733-1-git-send-email-kamal@canonical.com> References: <1381419752-29733-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1866 Lines: 61 3.8.13.11 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Ard Biesheuvel commit 40190c85f427dcfdbab5dbef4ffd2510d649da1f upstream. Patch 638591c enabled building the AES assembler code in Thumb2 mode. However, this code used arithmetic involving PC rather than adr{l} instructions to generate PC-relative references to the lookup tables, and this needs to take into account the different PC offset when running in Thumb mode. Signed-off-by: Ard Biesheuvel Acked-by: Nicolas Pitre Signed-off-by: Russell King Signed-off-by: Kamal Mostafa --- arch/arm/crypto/aes-armv4.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/crypto/aes-armv4.S b/arch/arm/crypto/aes-armv4.S index 19d6cd6..3a14ea8 100644 --- a/arch/arm/crypto/aes-armv4.S +++ b/arch/arm/crypto/aes-armv4.S @@ -148,7 +148,7 @@ AES_Te: @ const AES_KEY *key) { .align 5 ENTRY(AES_encrypt) - sub r3,pc,#8 @ AES_encrypt + adr r3,AES_encrypt stmdb sp!,{r1,r4-r12,lr} mov r12,r0 @ inp mov r11,r2 @@ -381,7 +381,7 @@ _armv4_AES_encrypt: .align 5 ENTRY(private_AES_set_encrypt_key) _armv4_AES_set_encrypt_key: - sub r3,pc,#8 @ AES_set_encrypt_key + adr r3,_armv4_AES_set_encrypt_key teq r0,#0 moveq r0,#-1 beq .Labrt @@ -843,7 +843,7 @@ AES_Td: @ const AES_KEY *key) { .align 5 ENTRY(AES_decrypt) - sub r3,pc,#8 @ AES_decrypt + adr r3,AES_decrypt stmdb sp!,{r1,r4-r12,lr} mov r12,r0 @ inp mov r11,r2 -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/