From patchwork Mon Jan 25 01:15:21 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 8103101 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D3668BEEE5 for ; Mon, 25 Jan 2016 01:24:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3B1BA203A0 for ; Mon, 25 Jan 2016 01:24:37 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 820302038D for ; Mon, 25 Jan 2016 01:24:36 +0000 (UTC) Received: from localhost ([::1]:34083 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNVtT-0005jv-Sl for patchwork-qemu-devel@patchwork.kernel.org; Sun, 24 Jan 2016 20:24:35 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47840) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNVjs-0002ci-Bm for qemu-devel@nongnu.org; Sun, 24 Jan 2016 20:14:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aNVjo-0000eL-RM for qemu-devel@nongnu.org; Sun, 24 Jan 2016 20:14:40 -0500 Received: from ozlabs.org ([2401:3900:2:1::2]:40917) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNVjo-0000b9-ED; Sun, 24 Jan 2016 20:14:36 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id F1DFE140BD3; Mon, 25 Jan 2016 12:14:32 +1100 (AEDT) From: David Gibson To: peter.maydell@linaro.org Date: Mon, 25 Jan 2016 12:15:21 +1100 Message-Id: <1453684527-23564-23-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1453684527-23564-1-git-send-email-david@gibson.dropbear.id.au> References: <1453684527-23564-1-git-send-email-david@gibson.dropbear.id.au> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2401:3900:2:1::2 Cc: lvivier@redhat.com, thuth@redhat.com, mark.cave-ayland@ilande.co.uk, agraf@suse.de, qemu-devel@nongnu.org, qemu-ppc@nongnu.org, bharata@linux.vnet.ibm.com, David Gibson , gkurz@linux.vnet.ibm.com Subject: [Qemu-devel] [PULL 22/28] target-ppc: gdbstub: introduce avr_need_swap() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Greg Kurz This helper will be used to support Altivec registers in little-endian guests. This patch does not change functionnality. Note: I had to put the helper some lines away from the gdb_*_avr_reg() routines to get a more readable patch. Signed-off-by: Greg Kurz Signed-off-by: David Gibson --- target-ppc/translate_init.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index aabf754..54720ca 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -8751,6 +8751,15 @@ static void dump_ppc_insns (CPUPPCState *env) } #endif +static bool avr_need_swap(CPUPPCState *env) +{ +#ifdef HOST_WORDS_BIGENDIAN + return false; +#else + return true; +#endif +} + static int gdb_get_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n) { if (n < 32) { @@ -8784,13 +8793,13 @@ static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n) static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) { if (n < 32) { -#ifdef HOST_WORDS_BIGENDIAN - stq_p(mem_buf, env->avr[n].u64[0]); - stq_p(mem_buf+8, env->avr[n].u64[1]); -#else - stq_p(mem_buf, env->avr[n].u64[1]); - stq_p(mem_buf+8, env->avr[n].u64[0]); -#endif + if (!avr_need_swap(env)) { + stq_p(mem_buf, env->avr[n].u64[0]); + stq_p(mem_buf+8, env->avr[n].u64[1]); + } else { + stq_p(mem_buf, env->avr[n].u64[1]); + stq_p(mem_buf+8, env->avr[n].u64[0]); + } return 16; } if (n == 32) { @@ -8807,13 +8816,13 @@ static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) static int gdb_set_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) { if (n < 32) { -#ifdef HOST_WORDS_BIGENDIAN - env->avr[n].u64[0] = ldq_p(mem_buf); - env->avr[n].u64[1] = ldq_p(mem_buf+8); -#else - env->avr[n].u64[1] = ldq_p(mem_buf); - env->avr[n].u64[0] = ldq_p(mem_buf+8); -#endif + if (!avr_need_swap(env)) { + env->avr[n].u64[0] = ldq_p(mem_buf); + env->avr[n].u64[1] = ldq_p(mem_buf+8); + } else { + env->avr[n].u64[1] = ldq_p(mem_buf); + env->avr[n].u64[0] = ldq_p(mem_buf+8); + } return 16; } if (n == 32) {