From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753804AbbA2HVc (ORCPT ); Thu, 29 Jan 2015 02:21:32 -0500 Received: from thoth.sbs.de ([192.35.17.2]:44408 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752280AbbA2HVb (ORCPT ); Thu, 29 Jan 2015 02:21:31 -0500 From: Jan Kiszka To: Andrew Morton , linux-kernel@vger.kernel.org Cc: Thomas Gleixner , Jason Wessel , kgdb-bugreport@lists.sourceforge.net, Andi Kleen , Tom Tromey , Ben Widawsky , Borislav Petkov Subject: [PATCH v11 10/28] scripts/gdb: Add read_u16/32/64 helpers Date: Thu, 29 Jan 2015 07:46:29 +0100 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add helpers for reading integers from target memory buffers. Required when caching the memory access is more efficient than reading individual values via gdb. Signed-off-by: Jan Kiszka --- scripts/gdb/linux/utils.py | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py index 10a227b..808a265 100644 --- a/scripts/gdb/linux/utils.py +++ b/scripts/gdb/linux/utils.py @@ -85,3 +85,24 @@ def get_target_endianness(): else: raise gdb.GdgError("unknown endianness '{0}'".format(endian)) return target_endianness + + +def read_u16(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + return ord(buffer[0]) + (ord(buffer[1]) << 8) + else: + return ord(buffer[1]) + (ord(buffer[0]) << 8) + + +def read_u32(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + return read_u16(buffer[0:2]) + (read_u16(buffer[2:4]) << 16) + else: + return read_u16(buffer[2:4]) + (read_u16(buffer[0:2]) << 16) + + +def read_u64(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + return read_u32(buffer[0:4]) + (read_u32(buffer[4:8]) << 32) + else: + return read_u32(buffer[4:8]) + (read_u32(buffer[0:4]) << 32) -- 2.1.4