From nobody Sun Nov 9 16:00:29 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 1551712687585459.94267466554584; Mon, 4 Mar 2019 07:18:07 -0800 (PST) Received: from localhost ([127.0.0.1]:55607 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h0pLw-0006YL-Fz for importer@patchew.org; Mon, 04 Mar 2019 10:18:04 -0500 Received: from eggs.gnu.org ([209.51.188.92]:57094) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h0pIb-0003zA-SM for qemu-devel@nongnu.org; Mon, 04 Mar 2019 10:14:38 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h0pIa-0007nU-T5 for qemu-devel@nongnu.org; Mon, 04 Mar 2019 10:14:37 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:39147 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 1h0pIa-0006L2-Iv for qemu-devel@nongnu.org; Mon, 04 Mar 2019 10:14:36 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 24DBE1A216C; Mon, 4 Mar 2019 16:13:33 +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 D3F9B1A212A; Mon, 4 Mar 2019 16:13:32 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com From: Mateja Marjanovic To: qemu-devel@nongnu.org Date: Mon, 4 Mar 2019 16:13:14 +0100 Message-Id: <1551712405-2530-3-git-send-email-mateja.marjanovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551712405-2530-1-git-send-email-mateja.marjanovic@rt-rk.com> References: <1551712405-2530-1-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 v3 02/13] 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 c62787d..4756bbb 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