From patchwork Wed Dec 11 16:29:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 849228 Delivered-To: patch@linaro.org Received: by 2002:a05:6000:2c4:b0:385:e875:8a9e with SMTP id o4csp421101wry; Wed, 11 Dec 2024 08:34:24 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCX54bfOY95ULP8/n6c0Os/mImlR7WiH+X3tviZuS42T2oLCxeTYl5J7c9WihtFx7s40lUDkTQ==@linaro.org X-Google-Smtp-Source: AGHT+IEokOa1S7kwwlxz+2Hsft7m2gBpPUAdrzXrH8maVnDICSmuGTtTrn1Vh4j+zPNz8WGttWeH X-Received: by 2002:ac8:5a03:0:b0:467:62d9:7a55 with SMTP id d75a77b69052e-4678936281fmr65908051cf.34.1733934864505; Wed, 11 Dec 2024 08:34:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1733934864; cv=none; d=google.com; s=arc-20240605; b=EtyMrn0ykSSQ4yF5JFczu+iAAEQQa6ngMV3Pi8JbRvJzQ49tINUGck16is+KxXzFGv 15EDnuFme0Ccth5Xm24dKer0JOH9G814uo5aqPLjb3a/euPUg1wVW8pU7cNkxdrPkmG+ EngxmR3uinxk3wlrG183VOttuWTffb0/nmHtexXeFxaa4QUxGjAM1u8nbPAmpHuVmF0N ez2pGBoNGrPvkQRy0Gs8+DHBB9sOb6or9At+0OsRpvVsnUga9I0ajVT33wb8y3fvBcNG uZPWn4wFQTyrNDita9WCJk5pWUiieQpCzl5DihHfKYJvtvgkVaITEGfJojQF87BjUyx3 Tteg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=17GfbZjW6epwa8YFLq0I3cD8ORZgiSit6nkfbKV++nM=; fh=ZhBia3nL9o1nuf7SbgdYn/0pDmAeja6gisyWXi2cqYE=; b=MjZE62kY5Ibnmu5FLmzq3VzL47ShGwqejNkl2rSG/gDAHBaJYspXmXwBVVq+NJ5mUd FR/lGjT42IWQWtfPtGiJLnHAAoN7tQwI/w0uihISfp44JGF2iIkl83lngnTNEReM0SVq 86aRiR+fIspsvQC68493G7pjkt8FfxmpcH86eEX27CTYjWRKkkfFHBUvpd47VXRQiZnP n8R7VNn5Y/657JT+fmcSbRDI/tH90FNNogHc5G2gzjtZmMsHdF+BiqWO0U8gglh7gwhX xC1OT3Jh7wJiGZNgzSpu8pJmMcPwJpSmYw+GkggzXJJgkk94p1Skc8bLamLEL/CdpCrd 4duQ==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=wY9UeJIf; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id d75a77b69052e-4676b23f9e1si80210641cf.441.2024.12.11.08.34.24 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 11 Dec 2024 08:34:24 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=wY9UeJIf; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tLPdh-0007AD-8c; Wed, 11 Dec 2024 11:32:41 -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 1tLPdA-00059g-NR for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:32:14 -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 1tLPd8-0001Ma-8Q for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:32:08 -0500 Received: by mail-qt1-x82b.google.com with SMTP id d75a77b69052e-467918c35easo7230051cf.2 for ; Wed, 11 Dec 2024 08:32:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1733934725; x=1734539525; 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=17GfbZjW6epwa8YFLq0I3cD8ORZgiSit6nkfbKV++nM=; b=wY9UeJIfebYQLX5yGzrBUgqe8yLDocj4ykq6NuIb8HeKWuKJ1zjOqmC6XLda4bJt/j h38kFqpLB3nWL4bHLHWSi4Cyt39OcLDB1buav1rVL9p9Kcc7PzArEnX9bv3SHAqm/bLO TPZujZE0a1RyEWxSp/wEn2evsQ+SUFhBo29hPK27BB6vn1pJefLEuRkm0exGwrVc3jdY FkbhDdQKjwNgWqpqNHRZ2Vd8XJQZr1f9gHUaHHUM9LZ9tNoI7gGn7qRNMyXw7pryUHox pfuOe49T7bEHXArFUwvkwMhLdQm+2v+aSnvqpXkkhHC7JK6hHHPOyT9+J910yn2WmK3v Uq6w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733934725; x=1734539525; 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=17GfbZjW6epwa8YFLq0I3cD8ORZgiSit6nkfbKV++nM=; b=BVCyMrJ1b8IZzyrNhATIL27/VkUXJhAY5nc1IBEoAFeIqomB91EaxCcTBP4/Xh16uw lLFGPmdzgqQHpHEUFCZn4GHk3jvI3TgXRCZByE2NlWhg9skde8M1kbx9XkKFiRviXqmL CU8iai4diNAYw6O69Etn25PAOEuEmgbyizXmJ2txcneXmdQXU76FTkqckN3NWkD5/H+I vdYdLF6IlQbskHHJHNSy0SsluTehkhWvA+aahViFSA86FC3KTFtLtHide7CuEBUyJMZ6 smRnyNMjPN8G44ddMfB8D6qOOMIInh42KQDOvjgVaO4WX+g1K4s96z+iRYq6dN7/EMlx d1UA== X-Gm-Message-State: AOJu0YzESatj6OLYaK5aJXvAd+UbbALqoPxq8B7Nc3QaO4d3lw1Yz3lH sJ07Gk+o9BJrZaftBnPnQE924vWreGAgRQlJIaGpk0Y2lDXRbyKiGzaZ+Q2dZxjFQqmdn0RN8tA qm5MnGISA X-Gm-Gg: ASbGncu4kIEv0CiDZXIfutQguSzib7SBcCIxAih2baGHyDTe48+SpieaD4w67h5HCOS fvuOT7h+Jq5Q/KZfFliHA7i1+rjKY+q51zO3el81AitFP3ea4WmGekC98zCXzOjwmecoDXthwEN t5uxq+Fw0sdD8wJ2l17cSBcLYiPaQT9i3PyKPJ+W7A1gSXdr8c86mNiAE/tmpU3gxTVYVYo+8KH kvUogVhZqc7iFgwsgZffM7ydxRlUaV8nU24uK609dt0xYa9/B1VtPjX1o89CA== X-Received: by 2002:a05:622a:1444:b0:467:6c5f:95c0 with SMTP id d75a77b69052e-467892931e3mr53818441cf.7.1733934725260; Wed, 11 Dec 2024 08:32:05 -0800 (PST) Received: from stoup.. ([187.217.227.247]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-46755db613csm43849381cf.70.2024.12.11.08.32.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2024 08:32:04 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v3 22/69] target/arm: Convert FCMP, FCMPE, FCCMP, FCCMPE to decodetree Date: Wed, 11 Dec 2024 10:29:49 -0600 Message-ID: <20241211163036.2297116-23-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 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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/tcg/translate-a64.c | 283 ++++++++++++--------------------- target/arm/tcg/a64.decode | 8 + 2 files changed, 112 insertions(+), 179 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 4611ae4ade..a99f3d0d13 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -6888,6 +6888,106 @@ static bool trans_FMOVI_s(DisasContext *s, arg_FMOVI_s *a) return true; } +/* + * Floating point compare, conditional compare + */ + +static void handle_fp_compare(DisasContext *s, int size, + unsigned int rn, unsigned int rm, + bool cmp_with_zero, bool signal_all_nans) +{ + TCGv_i64 tcg_flags = tcg_temp_new_i64(); + TCGv_ptr fpst = fpstatus_ptr(size == MO_16 ? FPST_FPCR_F16 : FPST_FPCR); + + if (size == MO_64) { + TCGv_i64 tcg_vn, tcg_vm; + + tcg_vn = read_fp_dreg(s, rn); + if (cmp_with_zero) { + tcg_vm = tcg_constant_i64(0); + } else { + tcg_vm = read_fp_dreg(s, rm); + } + if (signal_all_nans) { + gen_helper_vfp_cmped_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } else { + gen_helper_vfp_cmpd_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } + } else { + TCGv_i32 tcg_vn = tcg_temp_new_i32(); + TCGv_i32 tcg_vm = tcg_temp_new_i32(); + + read_vec_element_i32(s, tcg_vn, rn, 0, size); + if (cmp_with_zero) { + tcg_gen_movi_i32(tcg_vm, 0); + } else { + read_vec_element_i32(s, tcg_vm, rm, 0, size); + } + + switch (size) { + case MO_32: + if (signal_all_nans) { + gen_helper_vfp_cmpes_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } else { + gen_helper_vfp_cmps_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } + break; + case MO_16: + if (signal_all_nans) { + gen_helper_vfp_cmpeh_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } else { + gen_helper_vfp_cmph_a64(tcg_flags, tcg_vn, tcg_vm, fpst); + } + break; + default: + g_assert_not_reached(); + } + } + + gen_set_nzcv(tcg_flags); +} + +/* FCMP, FCMPE */ +static bool trans_FCMP(DisasContext *s, arg_FCMP *a) +{ + int check = fp_access_check_scalar_hsd(s, a->esz); + + if (check <= 0) { + return check == 0; + } + + handle_fp_compare(s, a->esz, a->rn, a->rm, a->z, a->e); + return true; +} + +/* FCCMP, FCCMPE */ +static bool trans_FCCMP(DisasContext *s, arg_FCCMP *a) +{ + TCGLabel *label_continue = NULL; + int check = fp_access_check_scalar_hsd(s, a->esz); + + if (check <= 0) { + return check == 0; + } + + if (a->cond < 0x0e) { /* not always */ + TCGLabel *label_match = gen_new_label(); + label_continue = gen_new_label(); + arm_gen_test_cc(a->cond, label_match); + /* nomatch: */ + gen_set_nzcv(tcg_constant_i64(a->nzcv << 28)); + tcg_gen_br(label_continue); + gen_set_label(label_match); + } + + handle_fp_compare(s, a->esz, a->rn, a->rm, false, a->e); + + if (label_continue) { + gen_set_label(label_continue); + } + return true; +} + /* * Advanced SIMD Modified Immediate */ @@ -8183,174 +8283,6 @@ static bool trans_CSEL(DisasContext *s, arg_CSEL *a) return true; } -static void handle_fp_compare(DisasContext *s, int size, - unsigned int rn, unsigned int rm, - bool cmp_with_zero, bool signal_all_nans) -{ - TCGv_i64 tcg_flags = tcg_temp_new_i64(); - TCGv_ptr fpst = fpstatus_ptr(size == MO_16 ? FPST_FPCR_F16 : FPST_FPCR); - - if (size == MO_64) { - TCGv_i64 tcg_vn, tcg_vm; - - tcg_vn = read_fp_dreg(s, rn); - if (cmp_with_zero) { - tcg_vm = tcg_constant_i64(0); - } else { - tcg_vm = read_fp_dreg(s, rm); - } - if (signal_all_nans) { - gen_helper_vfp_cmped_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } else { - gen_helper_vfp_cmpd_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } - } else { - TCGv_i32 tcg_vn = tcg_temp_new_i32(); - TCGv_i32 tcg_vm = tcg_temp_new_i32(); - - read_vec_element_i32(s, tcg_vn, rn, 0, size); - if (cmp_with_zero) { - tcg_gen_movi_i32(tcg_vm, 0); - } else { - read_vec_element_i32(s, tcg_vm, rm, 0, size); - } - - switch (size) { - case MO_32: - if (signal_all_nans) { - gen_helper_vfp_cmpes_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } else { - gen_helper_vfp_cmps_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } - break; - case MO_16: - if (signal_all_nans) { - gen_helper_vfp_cmpeh_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } else { - gen_helper_vfp_cmph_a64(tcg_flags, tcg_vn, tcg_vm, fpst); - } - break; - default: - g_assert_not_reached(); - } - } - - gen_set_nzcv(tcg_flags); -} - -/* Floating point compare - * 31 30 29 28 24 23 22 21 20 16 15 14 13 10 9 5 4 0 - * +---+---+---+-----------+------+---+------+-----+---------+------+-------+ - * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | op | 1 0 0 0 | Rn | op2 | - * +---+---+---+-----------+------+---+------+-----+---------+------+-------+ - */ -static void disas_fp_compare(DisasContext *s, uint32_t insn) -{ - unsigned int mos, type, rm, op, rn, opc, op2r; - int size; - - mos = extract32(insn, 29, 3); - type = extract32(insn, 22, 2); - rm = extract32(insn, 16, 5); - op = extract32(insn, 14, 2); - rn = extract32(insn, 5, 5); - opc = extract32(insn, 3, 2); - op2r = extract32(insn, 0, 3); - - if (mos || op || op2r) { - unallocated_encoding(s); - return; - } - - switch (type) { - case 0: - size = MO_32; - break; - case 1: - size = MO_64; - break; - case 3: - size = MO_16; - if (dc_isar_feature(aa64_fp16, s)) { - break; - } - /* fallthru */ - default: - unallocated_encoding(s); - return; - } - - if (!fp_access_check(s)) { - return; - } - - handle_fp_compare(s, size, rn, rm, opc & 1, opc & 2); -} - -/* Floating point conditional compare - * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 3 0 - * +---+---+---+-----------+------+---+------+------+-----+------+----+------+ - * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | cond | 0 1 | Rn | op | nzcv | - * +---+---+---+-----------+------+---+------+------+-----+------+----+------+ - */ -static void disas_fp_ccomp(DisasContext *s, uint32_t insn) -{ - unsigned int mos, type, rm, cond, rn, op, nzcv; - TCGLabel *label_continue = NULL; - int size; - - mos = extract32(insn, 29, 3); - type = extract32(insn, 22, 2); - rm = extract32(insn, 16, 5); - cond = extract32(insn, 12, 4); - rn = extract32(insn, 5, 5); - op = extract32(insn, 4, 1); - nzcv = extract32(insn, 0, 4); - - if (mos) { - unallocated_encoding(s); - return; - } - - switch (type) { - case 0: - size = MO_32; - break; - case 1: - size = MO_64; - break; - case 3: - size = MO_16; - if (dc_isar_feature(aa64_fp16, s)) { - break; - } - /* fallthru */ - default: - unallocated_encoding(s); - return; - } - - if (!fp_access_check(s)) { - return; - } - - if (cond < 0x0e) { /* not always */ - TCGLabel *label_match = gen_new_label(); - label_continue = gen_new_label(); - arm_gen_test_cc(cond, label_match); - /* nomatch: */ - gen_set_nzcv(tcg_constant_i64(nzcv << 28)); - tcg_gen_br(label_continue); - gen_set_label(label_match); - } - - handle_fp_compare(s, size, rn, rm, false, op); - - if (cond < 0x0e) { - gen_set_label(label_continue); - } -} - /* Floating-point data-processing (1 source) - half precision */ static void handle_fp_1src_half(DisasContext *s, int opcode, int rd, int rn) { @@ -9107,16 +9039,9 @@ static void disas_data_proc_fp(DisasContext *s, uint32_t insn) disas_fp_fixed_conv(s, insn); } else { switch (extract32(insn, 10, 2)) { - case 1: - /* Floating point conditional compare */ - disas_fp_ccomp(s, insn); - break; - case 2: - /* Floating point data-processing (2 source) */ - unallocated_encoding(s); /* in decodetree */ - break; - case 3: - /* Floating point conditional select */ + case 1: /* Floating point conditional compare */ + case 2: /* Floating point data-processing (2 source) */ + case 3: /* Floating point conditional select */ unallocated_encoding(s); /* in decodetree */ break; case 0: @@ -9127,7 +9052,7 @@ static void disas_data_proc_fp(DisasContext *s, uint32_t insn) break; case 1: /* [15:12] == xx10 */ /* Floating point compare */ - disas_fp_compare(s, insn); + unallocated_encoding(s); /* in decodetree */ break; case 2: /* [15:12] == x100 */ /* Floating point data-processing (1 source) */ diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 5670846768..7868b1cb24 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -1325,6 +1325,14 @@ FMINV_s 0110 1110 10 11000 01111 10 ..... ..... @rr_q1e2 FMOVI_s 0001 1110 .. 1 imm:8 100 00000 rd:5 esz=%esz_hsd +# Floating-point Compare + +FCMP 00011110 .. 1 rm:5 001000 rn:5 e:1 z:1 000 esz=%esz_hsd + +# Floating-point Conditional Compare + +FCCMP 00011110 .. 1 rm:5 cond:4 01 rn:5 e:1 nzcv:4 esz=%esz_hsd + # Advanced SIMD Modified Immediate / Shift by Immediate %abcdefgh 16:3 5:5