Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757828AbaKTRK4 (ORCPT ); Thu, 20 Nov 2014 12:10:56 -0500 Received: from thoth.sbs.de ([192.35.17.2]:43588 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756860AbaKTRCm (ORCPT ); Thu, 20 Nov 2014 12:02:42 -0500 From: Jan Kiszka To: Thomas Gleixner , linux-kernel@vger.kernel.org Cc: Andrew Morton , Jason Wessel , kgdb-bugreport@lists.sourceforge.net, Andi Kleen , Tom Tromey , Ben Widawsky , Borislav Petkov , Tatiana Al-Chueyr Martins Subject: [PATCH v10 10/27] scripts/gdb: Add read_u16/32/64 helpers Date: Thu, 20 Nov 2014 18:01:47 +0100 Message-Id: X-Mailer: git-send-email 1.8.4.5 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) -- 1.8.4.5 -- 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/