From patchwork Thu Oct 31 04:21:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 13857557 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 02B53E68953 for ; Thu, 31 Oct 2024 04:23:23 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t6MiQ-0001OA-2L; Thu, 31 Oct 2024 00:23:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t6MiN-0001EF-EY for qemu-devel@nongnu.org; Thu, 31 Oct 2024 00:23:19 -0400 Received: from mail-lf1-x12e.google.com ([2a00:1450:4864:20::12e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t6MiL-0006tC-9U for qemu-devel@nongnu.org; Thu, 31 Oct 2024 00:23:19 -0400 Received: by mail-lf1-x12e.google.com with SMTP id 2adb3069b0e04-539f8490856so524047e87.2 for ; Wed, 30 Oct 2024 21:23:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1730348595; x=1730953395; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ILZUHyaOqbrv0aSt3tz0yBDXQDHRKNcl8J2Q6tBi0CQ=; b=i+e65IXiS31VT9RM6/qyPzCnEsneMyB98PTc2/Xva7KGcKkoYLGfya8cZ6aXC02YnC PxWCdiydUKivXIkash/AXWOAdaVHLBjx1d7Iid7xQQLQ84WghpIVKU+33q62a8CWgyT9 MuMuGTKShTaJZOxd66pc83l3HL+4gH1r4HFfKbSah4H5quFx5PUAVZiO6HIcrLyiXdoG 37ZLQSpfpPklmavGRKf9w2lK/RGKXEmFfqDmcElOXhfvXNbbzv0TmGxp0X4JdLQbbOUP 6W06PhwH+duGSomSEwgrVLoW0NHvCtBOPgqnvhx8fh1rXTA54E0BNJ9SpzHWBI8dMgcD +DBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730348595; x=1730953395; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ILZUHyaOqbrv0aSt3tz0yBDXQDHRKNcl8J2Q6tBi0CQ=; b=c/PuAdSvHkuTb2dK2rHrkdBNhV1NO0p+4XIfJ+iOftQc65mu0x737jWUU5vQiBIaWM CwRRuFLfLa6B6cUkHBEBLZyGNA9qvSv/WMLfzuOSpvaPgTngFhi48TynWmBmNuKW0v/a 3zg9hMUi3d38IlXVjuNeifI8ONshAwbR2cnRydyy09rz0s5BeethFrsTqlM5n8UWgTA8 r4+OCJbvX8UzXnFjm1OIRYh3LDieCxaQmptv9FnCT8fYQs1VsBdRWnjiKEJTD6gdbSXF rKjk0+lyFDgd/sUkV1Pq9ZFpzP58UT6zdkrLevX3bokGKfv2ViJ+F5wPleHvQJ4eLtff joaQ== X-Gm-Message-State: AOJu0YwMNTqJ96b/J7twKtoafnPjvnpSkkzOf8XysC/cNR0wl7UxpHW4 75a6D4BV7hDamwaqskCJhX/IbIoU26NAHsg7+nqVCoXY1nK5LdkjnVtgaXCJ8tjJfzRUnpPULXN P X-Google-Smtp-Source: AGHT+IFwRIXI9vnqA9ZxAF2hVsdOqiROTul1v/EYCYoOn1KpYDiMaU1NrrMie7+E4UgrrolEWRo1kg== X-Received: by 2002:a05:6512:12d1:b0:539:f035:e158 with SMTP id 2adb3069b0e04-53c79e322eamr777149e87.18.1730348594743; Wed, 30 Oct 2024 21:23:14 -0700 (PDT) Received: from localhost.localdomain ([91.223.100.208]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-53c7bc961cfsm78333e87.23.2024.10.30.21.23.09 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 30 Oct 2024 21:23:14 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= Subject: [PULL 06/14] target/mips: Convert Loongson DDIV.G opcodes to decodetree Date: Thu, 31 Oct 2024 01:21:22 -0300 Message-ID: <20241031042130.98450-7-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241031042130.98450-1-philmd@linaro.org> References: <20241031042130.98450-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::12e; envelope-from=philmd@linaro.org; helo=mail-lf1-x12e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Philippe Mathieu-Daudé Introduce decode_loongson() to decode all Loongson vendor specific opcodes. Start converting a single opcode: DDIV.G (divide 64-bit signed integers). Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20241026175349.84523-5-philmd@linaro.org> Signed-off-by: Philippe Mathieu-Daudé --- target/mips/tcg/translate.h | 1 + target/mips/tcg/godson2.decode | 16 ++++++ target/mips/tcg/loong-ext.decode | 17 ++++++ target/mips/tcg/loong_translate.c | 86 +++++++++++++++++++++++++++++++ target/mips/tcg/translate.c | 26 ++-------- target/mips/tcg/meson.build | 3 ++ 6 files changed, 126 insertions(+), 23 deletions(-) create mode 100644 target/mips/tcg/godson2.decode create mode 100644 target/mips/tcg/loong-ext.decode create mode 100644 target/mips/tcg/loong_translate.c diff --git a/target/mips/tcg/translate.h b/target/mips/tcg/translate.h index ae6c25aa0c4..23a489c0f38 100644 --- a/target/mips/tcg/translate.h +++ b/target/mips/tcg/translate.h @@ -223,6 +223,7 @@ bool decode_64bit_enabled(DisasContext *ctx); bool decode_isa_rel6(DisasContext *ctx, uint32_t insn); bool decode_ase_msa(DisasContext *ctx, uint32_t insn); bool decode_ext_txx9(DisasContext *ctx, uint32_t insn); +bool decode_ext_loongson(DisasContext *ctx, uint32_t insn); #if defined(TARGET_MIPS64) bool decode_ase_lcsr(DisasContext *ctx, uint32_t insn); bool decode_ext_tx79(DisasContext *ctx, uint32_t insn); diff --git a/target/mips/tcg/godson2.decode b/target/mips/tcg/godson2.decode new file mode 100644 index 00000000000..47ea5a1c438 --- /dev/null +++ b/target/mips/tcg/godson2.decode @@ -0,0 +1,16 @@ +# Godson2 64-bit Integer instructions +# +# Copyright (C) 2021 Philippe Mathieu-Daudé +# +# SPDX-License-Identifier: LGPL-2.1-or-later +# +# Reference: +# Godson-2E Software Manual +# (Document Number: godson2e-user-manual-V0.6) +# + +&muldiv rs rt rd + +@rs_rt_rd ...... rs:5 rt:5 rd:5 ..... ...... &muldiv + +DDIV_G 011111 ..... ..... ..... 00000 011110 @rs_rt_rd diff --git a/target/mips/tcg/loong-ext.decode b/target/mips/tcg/loong-ext.decode new file mode 100644 index 00000000000..8b78ec48599 --- /dev/null +++ b/target/mips/tcg/loong-ext.decode @@ -0,0 +1,17 @@ +# Loongson 64-bit Extension instructions +# +# Copyright (C) 2021 Philippe Mathieu-Daudé +# +# SPDX-License-Identifier: LGPL-2.1-or-later +# +# Reference: +# STLS2F01 User Manual +# Appendix A: new integer instructions +# (Document Number: UM0447) +# + +&muldiv rs rt rd !extern + +@rs_rt_rd ...... rs:5 rt:5 rd:5 ..... ...... &muldiv + +DDIV_G 011100 ..... ..... ..... 00000 010101 @rs_rt_rd diff --git a/target/mips/tcg/loong_translate.c b/target/mips/tcg/loong_translate.c new file mode 100644 index 00000000000..53e4047cfa0 --- /dev/null +++ b/target/mips/tcg/loong_translate.c @@ -0,0 +1,86 @@ +/* + * MIPS Loongson 64-bit translation routines + * + * Copyright (c) 2004-2005 Jocelyn Mayer + * Copyright (c) 2006 Marius Groeger (FPU operations) + * Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support) + * Copyright (c) 2011 Richard Henderson + * Copyright (c) 2021 Philippe Mathieu-Daudé + * + * This code is licensed under the GNU GPLv2 and later. + */ + +#include "qemu/osdep.h" +#include "translate.h" + +/* Include the auto-generated decoder. */ +#include "decode-godson2.c.inc" +#include "decode-loong-ext.c.inc" + +/* + * Word or double-word Fixed-point instructions. + * --------------------------------------------- + * + * Fixed-point multiplies and divisions write only + * one result into general-purpose registers. + */ + +static bool gen_lext_DIV_G(DisasContext *s, int rd, int rs, int rt) +{ + TCGv t0, t1; + TCGLabel *l1, *l2, *l3; + + if (TARGET_LONG_BITS != 64) { + return false; + } + check_mips_64(s); + + if (rd == 0) { + /* Treat as NOP. */ + return true; + } + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + l1 = gen_new_label(); + l2 = gen_new_label(); + l3 = gen_new_label(); + + gen_load_gpr(t0, rs); + gen_load_gpr(t1, rt); + + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l3); + gen_set_label(l1); + + tcg_gen_brcondi_tl(TCG_COND_NE, t0, -1LL << 63, l2); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1LL, l2); + tcg_gen_mov_tl(cpu_gpr[rd], t0); + + tcg_gen_br(l3); + gen_set_label(l2); + tcg_gen_div_tl(cpu_gpr[rd], t0, t1); + gen_set_label(l3); + + return true; +} + +static bool trans_DDIV_G(DisasContext *s, arg_muldiv *a) +{ + return gen_lext_DIV_G(s, a->rt, a->rs, a->rd); +} + +bool decode_ext_loongson(DisasContext *ctx, uint32_t insn) +{ + if (!decode_64bit_enabled(ctx)) { + return false; + } + if ((ctx->insn_flags & INSN_LOONGSON2E) && decode_godson2(ctx, ctx->opcode)) { + return true; + } + if ((ctx->insn_flags & ASE_LEXT) && decode_loong_ext(ctx, ctx->opcode)) { + return true; + } + return false; +} diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c index 509488fdc7a..73445dd9074 100644 --- a/target/mips/tcg/translate.c +++ b/target/mips/tcg/translate.c @@ -333,7 +333,6 @@ enum { OPC_MULTU_G_2F = 0x12 | OPC_SPECIAL2, OPC_DMULTU_G_2F = 0x13 | OPC_SPECIAL2, OPC_DIV_G_2F = 0x14 | OPC_SPECIAL2, - OPC_DDIV_G_2F = 0x15 | OPC_SPECIAL2, OPC_DIVU_G_2F = 0x16 | OPC_SPECIAL2, OPC_DDIVU_G_2F = 0x17 | OPC_SPECIAL2, OPC_MOD_G_2F = 0x1c | OPC_SPECIAL2, @@ -375,7 +374,6 @@ enum { OPC_DIVU_G_2E = 0x1B | OPC_SPECIAL3, OPC_DMULT_G_2E = 0x1C | OPC_SPECIAL3, OPC_DMULTU_G_2E = 0x1D | OPC_SPECIAL3, - OPC_DDIV_G_2E = 0x1E | OPC_SPECIAL3, OPC_DDIVU_G_2E = 0x1F | OPC_SPECIAL3, OPC_MOD_G_2E = 0x22 | OPC_SPECIAL3, OPC_MODU_G_2E = 0x23 | OPC_SPECIAL3, @@ -3698,25 +3696,6 @@ static void gen_loongson_integer(DisasContext *ctx, uint32_t opc, case OPC_DMULTU_G_2F: tcg_gen_mul_tl(cpu_gpr[rd], t0, t1); break; - case OPC_DDIV_G_2E: - case OPC_DDIV_G_2F: - { - TCGLabel *l1 = gen_new_label(); - TCGLabel *l2 = gen_new_label(); - TCGLabel *l3 = gen_new_label(); - tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); - tcg_gen_movi_tl(cpu_gpr[rd], 0); - tcg_gen_br(l3); - gen_set_label(l1); - tcg_gen_brcondi_tl(TCG_COND_NE, t0, -1LL << 63, l2); - tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1LL, l2); - tcg_gen_mov_tl(cpu_gpr[rd], t0); - tcg_gen_br(l3); - gen_set_label(l2); - tcg_gen_div_tl(cpu_gpr[rd], t0, t1); - gen_set_label(l3); - } - break; case OPC_DDIVU_G_2E: case OPC_DDIVU_G_2F: { @@ -13654,7 +13633,6 @@ static void decode_opc_special2_legacy(CPUMIPSState *env, DisasContext *ctx) break; case OPC_DMULT_G_2F: case OPC_DMULTU_G_2F: - case OPC_DDIV_G_2F: case OPC_DDIVU_G_2F: case OPC_DMOD_G_2F: case OPC_DMODU_G_2F: @@ -14061,7 +14039,6 @@ static void decode_opc_special3_legacy(CPUMIPSState *env, DisasContext *ctx) } break; #if defined(TARGET_MIPS64) - case OPC_DDIV_G_2E: case OPC_DDIVU_G_2E: case OPC_DMULT_G_2E: case OPC_DMULTU_G_2E: @@ -15262,6 +15239,9 @@ static void decode_opc(CPUMIPSState *env, DisasContext *ctx) if (cpu_supports_isa(env, INSN_VR54XX) && decode_ext_vr54xx(ctx, ctx->opcode)) { return; } + if (TARGET_LONG_BITS == 64 && decode_ext_loongson(ctx, ctx->opcode)) { + return; + } #if defined(TARGET_MIPS64) if (ase_lcsr_available(env) && decode_ase_lcsr(ctx, ctx->opcode)) { return; diff --git a/target/mips/tcg/meson.build b/target/mips/tcg/meson.build index ea7fb582f2a..fd91148df74 100644 --- a/target/mips/tcg/meson.build +++ b/target/mips/tcg/meson.build @@ -1,4 +1,6 @@ gen = [ + decodetree.process('godson2.decode', extra_args: ['--static-decode=decode_godson2']), + decodetree.process('loong-ext.decode', extra_args: ['--static-decode=decode_loong_ext']), decodetree.process('rel6.decode', extra_args: ['--decode=decode_isa_rel6']), decodetree.process('msa.decode', extra_args: '--decode=decode_ase_msa'), decodetree.process('tx79.decode', extra_args: '--static-decode=decode_tx79'), @@ -28,6 +30,7 @@ mips_ss.add(when: 'TARGET_MIPS64', if_true: files( 'tx79_translate.c', 'octeon_translate.c', 'lcsr_translate.c', + 'loong_translate.c', ), if_false: files( 'mxu_translate.c', ))