From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54873) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZbUCG-0004q2-Dq for qemu-devel@nongnu.org; Mon, 14 Sep 2015 09:53:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZbUCA-0000De-SO for qemu-devel@nongnu.org; Mon, 14 Sep 2015 09:53:28 -0400 Received: from mnementh.archaic.org.uk ([2001:8b0:1d0::1]:35073) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZbUCA-00005c-Mp for qemu-devel@nongnu.org; Mon, 14 Sep 2015 09:53:22 -0400 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.80) (envelope-from ) id 1ZbUBz-0007tF-Ov for qemu-devel@nongnu.org; Mon, 14 Sep 2015 14:53:11 +0100 From: Peter Maydell Date: Mon, 14 Sep 2015 14:52:57 +0100 Message-Id: <1442238791-30255-11-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1442238791-30255-1-git-send-email-peter.maydell@linaro.org> References: <1442238791-30255-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 10/24] target-arm: Recognize UXTB, UXTH, LSR, LSL List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Richard Henderson These are all special case aliases of UBFM. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 1441909103-24666-9-git-send-email-rth@twiddle.net Signed-off-by: Peter Maydell --- target-arm/translate-a64.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 8ae6814..f2f8443 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -3038,6 +3038,23 @@ static void disas_bitfield(DisasContext *s, uint32_t insn) tcg_gen_sari_i64(tcg_rd, tcg_tmp, ri); goto done; } + } else if (opc == 2) { /* UBFM */ + if (ri == 0) { /* UXTB, UXTH, plus non-canonical AND */ + tcg_gen_andi_i64(tcg_rd, tcg_tmp, bitmask64(si + 1)); + return; + } + if (si == 63 || (si == 31 && ri <= si)) { /* LSR */ + if (si == 31) { + tcg_gen_ext32u_i64(tcg_tmp, tcg_tmp); + } + tcg_gen_shri_i64(tcg_rd, tcg_tmp, ri); + return; + } + if (si + 1 == ri && si != bitsize - 1) { /* LSL */ + int shift = bitsize - 1 - si; + tcg_gen_shli_i64(tcg_rd, tcg_tmp, shift); + goto done; + } } if (opc != 1) { /* SBFM or UBFM */ -- 1.9.1