From nobody Sun Nov 9 15:57:25 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 155118395170892.28576755182519; Tue, 26 Feb 2019 04:25:51 -0800 (PST) Received: from localhost ([127.0.0.1]:54110 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gybns-0008T4-Id for importer@patchew.org; Tue, 26 Feb 2019 07:25:44 -0500 Received: from eggs.gnu.org ([209.51.188.92]:57099) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gyblv-0007CH-40 for qemu-devel@nongnu.org; Tue, 26 Feb 2019 07:23:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gyblu-00072p-Ag for qemu-devel@nongnu.org; Tue, 26 Feb 2019 07:23:43 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:43393 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 1gyblp-0006wm-7R for qemu-devel@nongnu.org; Tue, 26 Feb 2019 07:23:38 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 8AA9D1A1FCC; Tue, 26 Feb 2019 13:23:25 +0100 (CET) Received: from rtrkw310-lin.domain.local (rtrkw310-lin.domain.local [10.10.13.57]) by mail.rt-rk.com (Postfix) with ESMTPSA id 5AAD71A21E8; Tue, 26 Feb 2019 13:23:25 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com From: Mateja Marjanovic To: qemu-devel@nongnu.org Date: Tue, 26 Feb 2019 13:23:14 +0100 Message-Id: <1551183797-13570-4-git-send-email-mateja.marjanovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551183797-13570-1-git-send-email-mateja.marjanovic@rt-rk.com> References: <1551183797-13570-1-git-send-email-mateja.marjanovic@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 v2 3/6] target/mips: Add emulation of MMI instruction PCPYLD 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: arikalo@wavecomp.com, amarkovic@wavecomp.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add emulation of MMI instruction PCPYLD. The emulation is implemented using TCG front end operations directly to achieve better performance. Signed-off-by: Mateja Marjanovic Reviewed-by: Aleksandar Rikalo --- target/mips/translate.c | 43 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 0d648b6..7c26a43 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -24410,6 +24410,45 @@ static void gen_mmi_pcpyh(DisasContext *ctx) } } =20 +/* + * PCPYLD rd, rs, rt + * + * Parallel Copy Lower Doubleword + * + * 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 + * +-----------+---------+---------+---------+---------+-----------+ + * | MMI | rs | rt | rd | PCPYLD | MMI2 | + * +-----------+---------+---------+---------+---------+-----------+ + */ +static void gen_mmi_pcpyld(DisasContext *ctx) +{ + uint32_t rs, rt, rd; + uint32_t opcode; + + opcode =3D ctx->opcode; + + rs =3D extract32(opcode, 21, 5); + rt =3D extract32(opcode, 16, 5); + rd =3D extract32(opcode, 11, 5); + + if (rd =3D=3D 0) { + /* nop */ + } else { + if (rs =3D=3D 0) { + tcg_gen_movi_i64(cpu_mmr[rd], 0); + } else { + tcg_gen_mov_i64(cpu_mmr[rd], cpu_gpr[rs]); + } + if (rt =3D=3D 0) { + tcg_gen_movi_i64(cpu_gpr[rd], 0); + } else { + if (rd !=3D rt) { + tcg_gen_mov_i64(cpu_gpr[rd], cpu_gpr[rt]); + } + } + } +} + #endif =20 =20 @@ -27424,7 +27463,6 @@ static void decode_mmi2(CPUMIPSState *env, DisasCon= text *ctx) case MMI_OPC_2_PINTH: /* TODO: MMI_OPC_2_PINTH */ case MMI_OPC_2_PMULTW: /* TODO: MMI_OPC_2_PMULTW */ case MMI_OPC_2_PDIVW: /* TODO: MMI_OPC_2_PDIVW */ - case MMI_OPC_2_PCPYLD: /* TODO: MMI_OPC_2_PCPYLD */ case MMI_OPC_2_PMADDH: /* TODO: MMI_OPC_2_PMADDH */ case MMI_OPC_2_PHMADH: /* TODO: MMI_OPC_2_PHMADH */ case MMI_OPC_2_PAND: /* TODO: MMI_OPC_2_PAND */ @@ -27439,6 +27477,9 @@ static void decode_mmi2(CPUMIPSState *env, DisasCon= text *ctx) case MMI_OPC_2_PROT3W: /* TODO: MMI_OPC_2_PROT3W */ generate_exception_end(ctx, EXCP_RI); /* TODO: MMI_OPC_CLASS_MMI2 = */ break; + case MMI_OPC_2_PCPYLD: + gen_mmi_pcpyld(ctx); + break; default: MIPS_INVAL("TX79 MMI class MMI2"); generate_exception_end(ctx, EXCP_RI); --=20 2.7.4