From patchwork Thu Jun 16 16:10:02 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 636551 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3rVpbR1DLpz9t17 for ; Fri, 17 Jun 2016 02:23:31 +1000 (AEST) Received: from localhost ([::1]:50693 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDa4n-0000rq-3F for incoming@patchwork.ozlabs.org; Thu, 16 Jun 2016 12:23:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53208) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDZrq-00049o-ET for qemu-devel@nongnu.org; Thu, 16 Jun 2016 12:10:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bDZro-0007kd-3L for qemu-devel@nongnu.org; Thu, 16 Jun 2016 12:10:05 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:57824) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDZrn-0007kX-SQ; Thu, 16 Jun 2016 12:10:04 -0400 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.84_2) (envelope-from ) id 1bDZrn-0007WD-94; Thu, 16 Jun 2016 17:10:03 +0100 From: Peter Maydell To: qemu-devel@nongnu.org Date: Thu, 16 Jun 2016 17:10:02 +0100 Message-Id: <1466093402-18143-1-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.9.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:8b0:1d0::2 Subject: [Qemu-devel] [PATCH] hw/bt: Don't use cpu_to_*w() and *_to_cpup() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, patches@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Don't use cpu_to_*w() and *_to_cpup() to do byte-swapped loads and stores; instead use ld*_p() and st*_p() which correctly handle misaligned accesses. Bring the HNDL() macro into line with how we deal with PARAMHANDLE(), by using cpu_to_le16() rather than an ifdef HOST_WORDS_BIGENDIAN. Signed-off-by: Peter Maydell --- hw/bt/hci.c | 10 +++------- hw/bt/l2cap.c | 12 ++++++------ 2 files changed, 9 insertions(+), 13 deletions(-) diff --git a/hw/bt/hci.c b/hw/bt/hci.c index 7d52205..351123f 100644 --- a/hw/bt/hci.c +++ b/hw/bt/hci.c @@ -426,11 +426,7 @@ static void bt_submit_raw_acl(struct bt_piconet_s *net, int length, uint8_t *dat * be continuously allocated. We do it though, to preserve similar * behaviour between hosts. Some things, like the BD_ADDR cannot be * preserved though (for example if a real hci is used). */ -#ifdef HOST_WORDS_BIGENDIAN -# define HNDL(raw) bswap16(raw) -#else -# define HNDL(raw) (raw) -#endif +#define HNDL(raw) cpu_to_le16(raw) static const uint8_t bt_event_reserved_mask[8] = { 0xff, 0x9f, 0xfb, 0xff, 0x07, 0x18, 0x00, 0x00, @@ -1504,8 +1500,8 @@ static void bt_submit_hci(struct HCIInfo *info, return; #define PARAM(cmd, param) (((cmd##_cp *) data)->param) -#define PARAM16(cmd, param) le16_to_cpup(&PARAM(cmd, param)) -#define PARAMHANDLE(cmd) HNDL(PARAM(cmd, handle)) +#define PARAM16(cmd, param) lduw_le_p(&PARAM(cmd, param)) +#define PARAMHANDLE(cmd) PARAM16(cmd, handle) #define LENGTH_CHECK(cmd) if (length < sizeof(cmd##_cp)) goto short_hci /* Note: the supported commands bitmask in bt_hci_read_local_commands_rp * needs to be updated every time a command is implemented here! */ diff --git a/hw/bt/l2cap.c b/hw/bt/l2cap.c index dfc95ed..e342045 100644 --- a/hw/bt/l2cap.c +++ b/hw/bt/l2cap.c @@ -526,9 +526,9 @@ static int l2cap_channel_config(struct l2cap_instance_s *l2cap, } /* MTU */ - val = le16_to_cpup((void *) opt->val); + val = lduw_le_p(opt->val); if (val < ch->min_mtu) { - cpu_to_le16w((void *) opt->val, ch->min_mtu); + stw_le_p(opt->val, ch->min_mtu); result = L2CAP_CONF_UNACCEPT; break; } @@ -543,7 +543,7 @@ static int l2cap_channel_config(struct l2cap_instance_s *l2cap, } /* Flush Timeout */ - val = le16_to_cpup((void *) opt->val); + val = lduw_le_p(opt->val); if (val < 0x0001) { opt->val[0] = 0xff; opt->val[1] = 0xff; @@ -987,7 +987,7 @@ static void l2cap_bframe_in(struct l2cap_chan_s *ch, uint16_t cid, static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, const l2cap_hdr *hdr, int len) { - uint16_t fcs = le16_to_cpup((void *) (hdr->data + len - 2)); + uint16_t fcs = lduw_le_p(hdr->data + len - 2); if (len < 4) goto len_error; @@ -1002,7 +1002,7 @@ static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, /* TODO: Signal an error? */ return; } - l2cap_sframe_in(ch, le16_to_cpup((void *) hdr->data)); + l2cap_sframe_in(ch, lduw_le_p(hdr->data)); return; } @@ -1022,7 +1022,7 @@ static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, if (len - 6 > ch->mps) goto len_error; - ch->len_total = le16_to_cpup((void *) (hdr->data + 2)); + ch->len_total = lduw_le_p(hdr->data + 2); if (len >= 6 + ch->len_total) goto seg_error;