From patchwork Wed Jul 13 09:06:03 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tixy X-Patchwork-Id: 971162 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p6D9BnEi030673 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 13 Jul 2011 09:12:11 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QgvSl-0005Oe-7M; Wed, 13 Jul 2011 09:10:36 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QgvSk-0003yo-1z; Wed, 13 Jul 2011 09:10:34 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QgvOr-00031h-20 for linux-arm-kernel@canuck.infradead.org; Wed, 13 Jul 2011 09:06:33 +0000 Received: from smarthost01.mail.zen.net.uk ([212.23.3.140]) by casper.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QgvOh-0001h1-LJ for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 09:06:31 +0000 Received: from [82.69.122.217] (helo=plug1) by smarthost01.mail.zen.net.uk with esmtpsa (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1QgvOe-0001yF-Cy for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 09:06:20 +0000 Received: from [192.168.2.20] (helo=computer2) by plug1 with esmtp (Exim 4.72) (envelope-from ) id 1QgvOb-0000RW-St for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 10:06:18 +0100 Received: from tixy by computer2 with local (Exim 4.72) (envelope-from ) id 1QgvOc-0008Ht-AE for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 10:06:18 +0100 From: Tixy To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 14/24] ARM: kprobes: Migrate ARM space_cccc_100x to decoding tables Date: Wed, 13 Jul 2011 10:06:03 +0100 Message-Id: <1310547973-31784-15-git-send-email-tixy@yxit.co.uk> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1310547973-31784-1-git-send-email-tixy@yxit.co.uk> References: <1310547973-31784-1-git-send-email-tixy@yxit.co.uk> X-Originating-Smarthost01-IP: [82.69.122.217] X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110713_100624_029177_548BBC18 X-CRM114-Status: GOOD ( 14.88 ) X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2-r929478 on casper.infradead.org summary: Content analysis details: (-1.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.23.3.140 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 13 Jul 2011 09:12:38 +0000 (UTC) From: Jon Medhurst Signed-off-by: Jon Medhurst --- arch/arm/kernel/kprobes-arm.c | 33 +++++++++++++-------------------- 1 files changed, 13 insertions(+), 20 deletions(-) diff --git a/arch/arm/kernel/kprobes-arm.c b/arch/arm/kernel/kprobes-arm.c index 319e6fe..b2fd2c8 100644 --- a/arch/arm/kernel/kprobes-arm.c +++ b/arch/arm/kernel/kprobes-arm.c @@ -1434,25 +1434,18 @@ static const union decode_item arm_cccc_01xx_table[] = { DECODE_END }; -static enum kprobe_insn __kprobes -space_cccc_100x(kprobe_opcode_t insn, struct arch_specific_insn *asi) -{ - /* LDM(2) : cccc 100x x101 xxxx 0xxx xxxx xxxx xxxx */ - /* LDM(3) : cccc 100x x1x1 xxxx 1xxx xxxx xxxx xxxx */ - if ((insn & 0x0e708000) == 0x85000000 || - (insn & 0x0e508000) == 0x85010000) - return INSN_REJECTED; - - /* LDM(1) : cccc 100x x0x1 xxxx xxxx xxxx xxxx xxxx */ - /* STM(1) : cccc 100x x0x0 xxxx xxxx xxxx xxxx xxxx */ - - /* - * Make the instruction unconditional because the new emulation - * functions don't bother to setup the PSR context. - */ - insn = (insn | 0xe0000000) & ~0x10000000; - return kprobe_decode_ldmstm(insn, asi); -} +static const union decode_item arm_cccc_100x_table[] = { + /* Block data transfer instructions */ + + /* LDM cccc 100x x0x1 xxxx xxxx xxxx xxxx xxxx */ + /* STM cccc 100x x0x0 xxxx xxxx xxxx xxxx xxxx */ + DECODE_CUSTOM (0x0e400000, 0x08000000, kprobe_decode_ldmstm), + + /* STM (user registers) cccc 100x x1x0 xxxx xxxx xxxx xxxx xxxx */ + /* LDM (user registers) cccc 100x x1x1 xxxx 0xxx xxxx xxxx xxxx */ + /* LDM (exception ret) cccc 100x x1x1 xxxx 1xxx xxxx xxxx xxxx */ + DECODE_END +}; static enum kprobe_insn __kprobes space_cccc_101x(kprobe_opcode_t insn, struct arch_specific_insn *asi) @@ -1531,7 +1524,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi) else if ((insn & 0x0e000000) == 0x08000000) - return space_cccc_100x(insn, asi); + return kprobe_decode_insn(insn, asi, arm_cccc_100x_table, false); else if ((insn & 0x0e000000) == 0x0a000000)