From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:51071) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8xv6-0006St-DR for qemu-devel@nongnu.org; Wed, 28 Sep 2011 13:27:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R8xv4-0003oZ-JW for qemu-devel@nongnu.org; Wed, 28 Sep 2011 13:27:44 -0400 Received: from mnementh.archaic.org.uk ([81.2.115.146]:33597) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8xv4-0003kv-DN for qemu-devel@nongnu.org; Wed, 28 Sep 2011 13:27:42 -0400 From: Peter Maydell Date: Wed, 28 Sep 2011 18:27:31 +0100 Message-Id: <1317230853-24970-4-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1317230853-24970-1-git-send-email-peter.maydell@linaro.org> References: <1317230853-24970-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH 3/5] target-arm: Add ARM UDIV/SDIV support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: patches@linaro.org Add support for UDIV and SDIV in ARM mode. This is a new optional feature for A profile cores (Thumb mode has had UDIV and SDIV for M profile cores for some time). Signed-off-by: Peter Maydell --- target-arm/translate.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/target-arm/translate.c b/target-arm/translate.c index e99fc18..d3d7c5c 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -7639,6 +7639,25 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) store_reg(s, rn, tmp); } break; + case 1: + case 3: + /* SDIV, UDIV */ + if (!arm_feature(env, ARM_FEATURE_DIV)) { + goto illegal_op; + } + if (((insn >> 5) & 7) || (rd != 15)) { + goto illegal_op; + } + tmp = load_reg(s, rm); + tmp2 = load_reg(s, rs); + if (insn & (1 << 21)) { + gen_helper_udiv(tmp, tmp, tmp2); + } else { + gen_helper_sdiv(tmp, tmp, tmp2); + } + tcg_temp_free_i32(tmp2); + store_reg(s, rn, tmp); + break; default: goto illegal_op; } -- 1.7.1