From nobody Mon Feb 9 11:51:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1532009142400861.1467052603317; Thu, 19 Jul 2018 07:05:42 -0700 (PDT) Received: from localhost ([::1]:43084 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fg9M8-0005fe-3i for importer@patchew.org; Thu, 19 Jul 2018 09:52:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48239) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fg8US-00033i-8A for qemu-devel@nongnu.org; Thu, 19 Jul 2018 09:00:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fg8TO-0004RW-6h for qemu-devel@nongnu.org; Thu, 19 Jul 2018 08:57:04 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:56209 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 1fg8TN-0004QP-Qw for qemu-devel@nongnu.org; Thu, 19 Jul 2018 08:55:58 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 4CE2B1A4156; Thu, 19 Jul 2018 14:55:56 +0200 (CEST) Received: from smarkovic.mipstec.com (smarkovic.domain.local [10.10.14.46]) by mail.rt-rk.com (Postfix) with ESMTPSA id 2EC801A1D42; Thu, 19 Jul 2018 14:55:56 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: Stefan Markovic To: qemu-devel@nongnu.org Date: Thu, 19 Jul 2018 14:54:37 +0200 Message-Id: <1532004912-13899-6-git-send-email-stefan.markovic@rt-rk.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1532004912-13899-1-git-send-email-stefan.markovic@rt-rk.com> References: <1532004912-13899-1-git-send-email-stefan.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-Mailman-Approved-At: Thu, 19 Jul 2018 09:35:10 -0400 Subject: [Qemu-devel] [PATCH v3 05/40] 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: 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Yongbok Kim Add some basic utility functions and macros for nanoMIPS decoding engine. Signed-off-by: Yongbok Kim Signed-off-by: Aleksandar Markovic Signed-off-by: Stefan Markovic Reviewed-by: Richard Henderson --- target/mips/translate.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/target/mips/translate.c b/target/mips/translate.c index 67a0f70..4e6ae1f 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -16465,6 +16465,41 @@ enum { * */ =20 +static int decode_gpr_gpr3(int r) +{ + static const int map[] =3D { 16, 17, 18, 19, 4, 5, 6, 7 }; + + return map[r & 0x7]; +} + +static int decode_gpr_gpr4(int r) +{ + static const int map[] =3D { 8, 9, 10, 11, 4, 5, 6, 7, + 16, 17, 18, 19, 20, 21, 22, 23 }; + + return map[r & 0xf]; +} + +/* Used for 16-bit store instructions. */ +static int decode_gpr_gpr4_zero(int r) +{ + static const int map[] =3D { 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; --=20 2.7.4