From nobody Fri Dec 19 17:42:42 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1733935540; cv=none; d=zohomail.com; s=zohoarc; b=c2DiBViYpEgDuiVkg0hqfOyiS0v6qSWBeUV9ZrtKGbyb54DZyqE4mq7Xrb0FuOAt6E0kDKs9U/STr8+Y0jC36o9V7EyHYskdgyTFfIZz7akVSFcNT+zo034lZvhJlrktMjNmIsl3QHylRKOAJGuzwWV1QhnDaGbxk5oZbFDWCPg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1733935540; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=ifcSfCHSTTtxXndi5QQbGHpzoZtEugLsXBXrGvDqkmU=; b=E9kROlP2E3KZd59EPb9o5xMpN4l0EeRUOixKjN1CtaE9DeJqFJS5vF/sgwkIhCEW5+UmprjHtphL1QXE1IysLhibeZFc8HOgQ1mXcQ4pBCNpQyP7WqzFP2s8HhOqQsHt8n0NXAmaOdVGSlHJLfq2fjEFQ1tzf6lB7TemYp9NV7c= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1733935540539443.7103032982948; Wed, 11 Dec 2024 08:45:40 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tLPd6-000508-Br; Wed, 11 Dec 2024 11:32:05 -0500 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 1tLPcA-0003Gx-Lc for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:31:08 -0500 Received: from mail-qt1-x82b.google.com ([2607:f8b0:4864:20::82b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tLPc8-00018v-Rm for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:31:06 -0500 Received: by mail-qt1-x82b.google.com with SMTP id d75a77b69052e-467918c360aso5206951cf.0 for ; Wed, 11 Dec 2024 08:31:04 -0800 (PST) Received: from stoup.. ([187.217.227.247]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-46755db613csm43849381cf.70.2024.12.11.08.31.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2024 08:31:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1733934664; x=1734539464; 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=ifcSfCHSTTtxXndi5QQbGHpzoZtEugLsXBXrGvDqkmU=; b=PFWBMLA4D3f8YLrZ2ikn7HvTKOHB8++C6vAjRuesDA1b4m3bd1rU1Luun6viGtNOgg KX9ubPYUUBBQha5z4M+GsebBz1y9CqWcPdIkDcHDGcgbJNYB+r7QXXZFAITR/bNfSTdo 7hnTLnJtExJfTpGAYXiZnlhMhKb8FNLMLxCK9GhH2Aba6wlrhpoPJAuzxKVsCOd5ypr2 HDVNw8GUEHqCqTELkXl5HYygxZoTGrqvggpckXzzEsIQ+FhY4JbQEUEnknfSsIBG3PSV /ZE6375fiJt9V+9Ix6hCLUCn7+fuDCo8eNNPtsVG/7gS+A6Iqfbsoh89HoNIMqr+l1y2 wY2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733934664; x=1734539464; 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=ifcSfCHSTTtxXndi5QQbGHpzoZtEugLsXBXrGvDqkmU=; b=vvYrTaDh2mO6yuVEApRr2VZMmDWJCjhrhBrC+hzQGe5Be/EznkAgvGIXZujrtL+0nq UKH4oNLpKkv+EFzmSxEod40xNXXLhdRGZR4NCFCOHoBBwd/50/vwcBR7Y2wG9N6q/fCS yNm4zhv+S8NNm2y8DWwP4VyQgEJO8qms+vDQpu6m6NnYt0I3QcoIU0TGLWNjw0uuwOti I5Pea1fmVTmR3ZA/0bZvbHm1/ZFygJlVnrdDu01SERiDU5lynjpVcC24r74fx21DwhjU bUqED2/+2N5suGE6MbNwsLQoVzVDSOuKLr+G6m5wu2uKWQrRb3+LfqIgFLJPOa0YnlZf tLAw== X-Gm-Message-State: AOJu0Yxc5wLqUoC++1Yj/KUvyn0xH+qRPEFk60zNogSWFuyR0tGM0+Ae aYVFT5ixiWHjzXnzlG1tUFUFVIJ+HasZQkc1RdATID+1T/sVWoCdnpbCZHxBm8jnbAGQmH5xXSx ZigjUmc9f X-Gm-Gg: ASbGncvweV7YzT6dt2AY41mXm2EzOaRGm+FrIvIHHjl9CB3cvWa/U7zGeK+aL8S1KI3 iM/jWN85BYWc37bPhm9jHJnaU+FWpGkP9jcdyjUAxcgFtBQWSjQZaRyD4X+Un/sCgeyzFRBUbhq Ikx7TcFuiQ+NyKMQo4BZ8GHsw3G4FRr8zJqQtGRm9BQ8E0Hrlf/mr0MiyGZxbR95iU6VfcljjXy eNUpWoGASkTvh0dx8bME7PtvIa/kmxJoqjjp9l7GpQQwRQpzog5DCXTBw0I4Q== X-Google-Smtp-Source: AGHT+IEs4DeUBL/n2fhJ1WeRK03xY+6asPXLgMeywi79P2okcMjp47jSMm6PHss9DKURtjfh5NVXlw== X-Received: by 2002:ac8:5803:0:b0:467:5711:bdb8 with SMTP id d75a77b69052e-46795444052mr5950951cf.46.1733934663468; Wed, 11 Dec 2024 08:31:03 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v3 02/69] target/arm: Convert UDIV, SDIV to decodetree Date: Wed, 11 Dec 2024 10:29:29 -0600 Message-ID: <20241211163036.2297116-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241211163036.2297116-1-richard.henderson@linaro.org> References: <20241211163036.2297116-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=2607:f8b0:4864:20::82b; envelope-from=richard.henderson@linaro.org; helo=mail-qt1-x82b.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1733935541521116600 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- target/arm/tcg/translate-a64.c | 64 +++++++++++++++++----------------- target/arm/tcg/a64.decode | 7 ++++ 2 files changed, 39 insertions(+), 32 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index b2851ea503..9f687ba840 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -7485,6 +7485,36 @@ TRANS(UQRSHRN_si, do_scalar_shift_imm_narrow, a, uqr= shrn_fns, 0, false) TRANS(SQSHRUN_si, do_scalar_shift_imm_narrow, a, sqshrun_fns, MO_SIGN, fal= se) TRANS(SQRSHRUN_si, do_scalar_shift_imm_narrow, a, sqrshrun_fns, MO_SIGN, f= alse) =20 +static bool do_div(DisasContext *s, arg_rrr_sf *a, bool is_signed) +{ + TCGv_i64 tcg_n, tcg_m, tcg_rd; + tcg_rd =3D cpu_reg(s, a->rd); + + if (!a->sf && is_signed) { + tcg_n =3D tcg_temp_new_i64(); + tcg_m =3D tcg_temp_new_i64(); + tcg_gen_ext32s_i64(tcg_n, cpu_reg(s, a->rn)); + tcg_gen_ext32s_i64(tcg_m, cpu_reg(s, a->rm)); + } else { + tcg_n =3D read_cpu_reg(s, a->rn, a->sf); + tcg_m =3D read_cpu_reg(s, a->rm, a->sf); + } + + if (is_signed) { + gen_helper_sdiv64(tcg_rd, tcg_n, tcg_m); + } else { + gen_helper_udiv64(tcg_rd, tcg_n, tcg_m); + } + + if (!a->sf) { /* zero extend final result */ + tcg_gen_ext32u_i64(tcg_rd, tcg_rd); + } + return true; +} + +TRANS(SDIV, do_div, a, true) +TRANS(UDIV, do_div, a, false) + /* Shift a TCGv src by TCGv shift_amount, put result in dst. * Note that it is the caller's responsibility to ensure that the * shift amount is in range (ie 0..31 or 0..63) and provide the ARM @@ -8425,32 +8455,6 @@ static void disas_data_proc_1src(DisasContext *s, ui= nt32_t insn) #undef MAP } =20 -static void handle_div(DisasContext *s, bool is_signed, unsigned int sf, - unsigned int rm, unsigned int rn, unsigned int rd) -{ - TCGv_i64 tcg_n, tcg_m, tcg_rd; - tcg_rd =3D cpu_reg(s, rd); - - if (!sf && is_signed) { - tcg_n =3D tcg_temp_new_i64(); - tcg_m =3D tcg_temp_new_i64(); - tcg_gen_ext32s_i64(tcg_n, cpu_reg(s, rn)); - tcg_gen_ext32s_i64(tcg_m, cpu_reg(s, rm)); - } else { - tcg_n =3D read_cpu_reg(s, rn, sf); - tcg_m =3D read_cpu_reg(s, rm, sf); - } - - if (is_signed) { - gen_helper_sdiv64(tcg_rd, tcg_n, tcg_m); - } else { - gen_helper_udiv64(tcg_rd, tcg_n, tcg_m); - } - - if (!sf) { /* zero extend final result */ - tcg_gen_ext32u_i64(tcg_rd, tcg_rd); - } -} =20 /* LSLV, LSRV, ASRV, RORV */ static void handle_shift_reg(DisasContext *s, @@ -8552,12 +8556,6 @@ static void disas_data_proc_2src(DisasContext *s, ui= nt32_t insn) } } break; - case 2: /* UDIV */ - handle_div(s, false, sf, rm, rn, rd); - break; - case 3: /* SDIV */ - handle_div(s, true, sf, rm, rn, rd); - break; case 4: /* IRG */ if (sf =3D=3D 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) { goto do_unallocated; @@ -8616,6 +8614,8 @@ static void disas_data_proc_2src(DisasContext *s, uin= t32_t insn) } default: do_unallocated: + case 2: /* UDIV */ + case 3: /* SDIV */ unallocated_encoding(s); break; } diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index d28efb884d..c218f6afbc 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -28,6 +28,7 @@ &r rn &ri rd imm &rri_sf rd rn imm sf +&rrr_sf rd rn rm sf &i imm &rr_e rd rn esz &rri_e rd rn imm esz @@ -652,6 +653,12 @@ CPYE 00 011 1 01100 ..... .... 01 ..... ...= .. @cpy ### Data Processing (register) =20 # Data Processing (2-source) + +@rrr_sf sf:1 .......... rm:5 ...... rn:5 rd:5 &rrr_sf + +UDIV . 00 11010110 ..... 00001 0 ..... ..... @rrr_sf +SDIV . 00 11010110 ..... 00001 1 ..... ..... @rrr_sf + # Data Processing (1-source) # Logical (shifted reg) # Add/subtract (shifted reg) --=20 2.43.0