From patchwork Thu Aug 16 14:57:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 958355 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rt-rk.com 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 41rqb007Kqz9s4V for ; Fri, 17 Aug 2018 01:12:58 +1000 (AEST) Received: from localhost ([::1]:56258 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqJxH-0002h4-AU for incoming@patchwork.ozlabs.org; Thu, 16 Aug 2018 11:12:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55932) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqJkz-0005Kq-9N for qemu-devel@nongnu.org; Thu, 16 Aug 2018 11:00:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqJkt-0000dI-8G for qemu-devel@nongnu.org; Thu, 16 Aug 2018 11:00:11 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:43010 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqJks-0000aT-W7 for qemu-devel@nongnu.org; Thu, 16 Aug 2018 11:00:07 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 80FFD1A23C0; Thu, 16 Aug 2018 16:58:59 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 511EF1A23D3; Thu, 16 Aug 2018 16:58:59 +0200 (CEST) From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Thu, 16 Aug 2018 16:57:13 +0200 Message-Id: <1534431497-1385-21-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534431497-1385-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1534431497-1385-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v9 20/84] target/mips: Add nanoMIPS decoding and extraction utilities 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: peter.maydell@linaro.org, pburton@wavecomp.com, smarkovic@wavecomp.com, riku.voipio@iki.fi, richard.henderson@linaro.org, laurent@vivier.eu, philippe.mathieu.daude@gmail.com, amarkovic@wavecomp.com, pjovanovic@wavecomp.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Aleksandar Markovic Add some basic utility functions and macros for nanoMIPS decoding engine. Reviewed-by: Richard Henderson Signed-off-by: Yongbok Kim Signed-off-by: Aleksandar Markovic Signed-off-by: Stefan Markovic --- target/mips/translate.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/target/mips/translate.c b/target/mips/translate.c index 2682ede..557b96b 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -16593,6 +16593,51 @@ enum { * */ +/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr3'). */ +static inline int decode_gpr_gpr3(int r) +{ + static const int map[] = { 16, 17, 18, 19, 4, 5, 6, 7 }; + + return map[r & 0x7]; +} + +/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr3.src.store'). */ +static inline int decode_gpr_gpr3_src_store(int r) +{ + static const int map[] = { 0, 17, 18, 19, 4, 5, 6, 7 }; + + return map[r & 0x7]; +} + +/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr4'). */ +static inline int decode_gpr_gpr4(int r) +{ + static const int map[] = { 8, 9, 10, 11, 4, 5, 6, 7, + 16, 17, 18, 19, 20, 21, 22, 23 }; + + return map[r & 0xf]; +} + +/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr4.zero'). */ +static inline int decode_gpr_gpr4_zero(int r) +{ + static const int map[] = { 8, 9, 10, 0, 4, 5, 6, 7, + 16, 17, 18, 19, 20, 21, 22, 23 }; + + return map[r & 0xf]; +} + + +/* extraction utilities */ + +#define NANOMIPS_EXTRACT_RD(op) ((op >> 7) & 0x7) +#define NANOMIPS_EXTRACT_RS(op) ((op >> 4) & 0x7) +#define NANOMIPS_EXTRACT_RS2(op) uMIPS_RS(op) +#define NANOMIPS_EXTRACT_RS1(op) ((op >> 1) & 0x7) +#define NANOMIPS_EXTRACT_RD5(op) ((op >> 5) & 0x1f) +#define NANOMIPS_EXTRACT_RS5(op) (op & 0x1f) + + static int decode_nanomips_opc(CPUMIPSState *env, DisasContext *ctx) { return 2;