From nobody Fri Nov 7 04:16:32 2025 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 1545989910247775.0033123701849; Fri, 28 Dec 2018 01:38:30 -0800 (PST) Received: from localhost ([127.0.0.1]:57840 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gcob6-0007rI-U3 for importer@patchew.org; Fri, 28 Dec 2018 04:38:28 -0500 Received: from eggs.gnu.org ([208.118.235.92]:48021) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gcoPH-0000qJ-Ui for qemu-devel@nongnu.org; Fri, 28 Dec 2018 04:26:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gcoPD-0003JF-Cz for qemu-devel@nongnu.org; Fri, 28 Dec 2018 04:26:15 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:49277 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 1gcoPC-000373-Mr for qemu-devel@nongnu.org; Fri, 28 Dec 2018 04:26:11 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 1C23F1A210D; Fri, 28 Dec 2018 10:25:56 +0100 (CET) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id EB2931A2148; Fri, 28 Dec 2018 10:25:55 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Fri, 28 Dec 2018 10:25:32 +0100 Message-Id: <1545989148-13582-26-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545989148-13582-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1545989148-13582-1-git-send-email-aleksandar.markovic@rt-rk.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PULL 25/41] disas: nanoMIPS: Comment the decoder of 'gpr3.src.store' gpr encoding type 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, amarkovic@wavecomp.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Aleksandar Markovic Comment the decoder of 'gpr3.src.store' gpr encoding type in nanoMIPS disassembler. Reviewed-by: Aleksandar Rikalo Signed-off-by: Aleksandar Markovic --- disas/nanomips.cpp | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp index 7c56162..1c313f3 100644 --- a/disas/nanomips.cpp +++ b/disas/nanomips.cpp @@ -349,6 +349,38 @@ uint64 NMD::decode_gpr_gpr3(uint64 d) } =20 =20 +/* + * NMD::decode_gpr_gpr3_src_store() - decoder for 'gpr3.src.store' gpr enc= oding + * type + * + * Map a 3-bit code to the 5-bit register space according to this patter= n: + * + * 7 6 5 4 3 2 1 0 + * | | | | | | | | + * | | | | | | | =E2=94=94---------------------= --=E2=94=90 + * | | | =E2=94=94-----------------------=E2=94= =90 | + * | | =E2=94=94-----------------------=E2=94= =90 | | + * | =E2=94=94-----------------------=E2=94=90 = | | | + * =E2=94=94-----------------------=E2=94=90 | = | | | + * | | | | | | | | + * =E2=94=8C-------=E2=94=98 | | | | = | | | + * | =E2=94=8C-------=E2=94=98 | | | = | | | + * | | =E2=94=8C-------=E2=94=98 | | = | | | + * | | | | | | | | + * | | | | | | | | + * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 + * 3 2 1 0 + * + * This pattern is the same one used for 'gpr3' gpr encoding type, excep= t for + * the input value 0, that is mapped to the output value 0 instead of 16. + * + * Used in handling following instructions: + * + * - SB[16] + * - SH[16] + * - SW[16] + * - SW[GP16] + */ uint64 NMD::decode_gpr_gpr3_src_store(uint64 d) { static uint64 register_list[] =3D { 0, 17, 18, 19, 4, 5, 6, 7 }; --=20 2.7.4