From patchwork Sat Jan 8 16:01:15 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 77961 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 45107B70FF for ; Sun, 9 Jan 2011 03:02:41 +1100 (EST) Received: from localhost ([127.0.0.1]:42944 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PbbFW-0001aQ-6F for incoming@patchwork.ozlabs.org; Sat, 08 Jan 2011 11:02:38 -0500 Received: from [140.186.70.92] (port=38661 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PbbER-0001Sg-Pi for qemu-devel@nongnu.org; Sat, 08 Jan 2011 11:01:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PbbEK-0006Eo-IC for qemu-devel@nongnu.org; Sat, 08 Jan 2011 11:01:31 -0500 Received: from mnementh.archaic.org.uk ([81.2.115.146]:5842) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PbbEK-0006E3-AJ for qemu-devel@nongnu.org; Sat, 08 Jan 2011 11:01:24 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.69) (envelope-from ) id 1PbbEC-0008TH-Kf for qemu-devel@nongnu.org; Sat, 08 Jan 2011 16:01:16 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Sat, 8 Jan 2011 16:01:15 +0000 Message-Id: <1294502476-32537-2-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1294502476-32537-1-git-send-email-peter.maydell@linaro.org> References: <1294502476-32537-1-git-send-email-peter.maydell@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) Subject: [Qemu-devel] [PATCH v2 1/2] ARM: add neon helpers for VQSHLU X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Juha Riihimäki Add neon helper functions to implement VQSHLU, which is a signed-to-unsigned version of VQSHL available only as an immediate form. Signed-off-by: Juha Riihimäki Reviewed-by: Aurelien Jarno Signed-off-by: Peter Maydell --- target-arm/helpers.h | 4 +++ target-arm/neon_helper.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 0 deletions(-) diff --git a/target-arm/helpers.h b/target-arm/helpers.h index 0d1bc47..b88ebae 100644 --- a/target-arm/helpers.h +++ b/target-arm/helpers.h @@ -249,6 +249,10 @@ DEF_HELPER_3(neon_qshl_u32, i32, env, i32, i32) DEF_HELPER_3(neon_qshl_s32, i32, env, i32, i32) DEF_HELPER_3(neon_qshl_u64, i64, env, i64, i64) DEF_HELPER_3(neon_qshl_s64, i64, env, i64, i64) +DEF_HELPER_3(neon_qshlu_s8, i32, env, i32, i32); +DEF_HELPER_3(neon_qshlu_s16, i32, env, i32, i32); +DEF_HELPER_3(neon_qshlu_s32, i32, env, i32, i32); +DEF_HELPER_3(neon_qshlu_s64, i64, env, i64, i64); DEF_HELPER_3(neon_qrshl_u8, i32, env, i32, i32) DEF_HELPER_3(neon_qrshl_s8, i32, env, i32, i32) DEF_HELPER_3(neon_qrshl_u16, i32, env, i32, i32) diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c index dae063e..20f3c16 100644 --- a/target-arm/neon_helper.c +++ b/target-arm/neon_helper.c @@ -632,6 +632,53 @@ uint64_t HELPER(neon_qshl_s64)(CPUState *env, uint64_t valop, uint64_t shiftop) return val; } +#define NEON_FN(dest, src1, src2) do { \ + if (src1 & (1 << (sizeof(src1) * 8 - 1))) { \ + SET_QC(); \ + dest = 0; \ + } else { \ + int8_t tmp; \ + tmp = (int8_t)src2; \ + if (tmp >= (ssize_t)sizeof(src1) * 8) { \ + if (src1) { \ + SET_QC(); \ + dest = ~0; \ + } else { \ + dest = 0; \ + } \ + } else if (tmp <= -(ssize_t)sizeof(src1) * 8) { \ + dest = 0; \ + } else if (tmp < 0) { \ + dest = src1 >> -tmp; \ + } else { \ + dest = src1 << tmp; \ + if ((dest >> tmp) != src1) { \ + SET_QC(); \ + dest = ~0; \ + } \ + } \ + }} while (0) +NEON_VOP_ENV(qshlu_s8, neon_u8, 4) +NEON_VOP_ENV(qshlu_s16, neon_u16, 2) +#undef NEON_FN + +uint32_t HELPER(neon_qshlu_s32)(CPUState *env, uint32_t valop, uint32_t shiftop) +{ + if ((int32_t)valop < 0) { + SET_QC(); + return 0; + } + return helper_neon_qshl_u32(env, valop, shiftop); +} + +uint64_t HELPER(neon_qshlu_s64)(CPUState *env, uint64_t valop, uint64_t shiftop) +{ + if ((int64_t)valop < 0) { + SET_QC(); + return 0; + } + return helper_neon_qshl_u64(env, valop, shiftop); +} /* FIXME: This is wrong. */ #define NEON_FN(dest, src1, src2) do { \