From patchwork Sun Jul 9 18:28:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 1805342 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=qBVPJ2Mn; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4QzbLM0JVVz20ZQ for ; Mon, 10 Jul 2023 04:31:07 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qIZAQ-0008Go-R8; Sun, 09 Jul 2023 14:29:54 -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 1qIZAI-0008Dg-1b for qemu-devel@nongnu.org; Sun, 09 Jul 2023 14:29:46 -0400 Received: from mail-wm1-x331.google.com ([2a00:1450:4864:20::331]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qIZAE-0000DT-DO for qemu-devel@nongnu.org; Sun, 09 Jul 2023 14:29:45 -0400 Received: by mail-wm1-x331.google.com with SMTP id 5b1f17b1804b1-3fbea147034so37211135e9.0 for ; Sun, 09 Jul 2023 11:29:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1688927378; x=1691519378; 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=KMA70dMb1SJ/eTe/2+zO5JW0aBcXeIGHYSkfDyZwFgY=; b=qBVPJ2MnRNSW4BqnYe+HeO6n6IxtwRo3NqXuUSgPWQNNFhNFrEXqE5GweGQLqJKB/+ ZjmQDSU7V6vPNXNd2q29l7K96aIdQGYx5wIxCd5qJqmaYFigkm/XoMHnP2uaZy/kYs9F tCmU8Em8Cks4d2qWjuyf/75kU+xgCKqj8gH8rqBlXbtkbd/JSfHwELrtnKAgAUb9FcYe zl333+aPIp2MuTQAZHhNVtv59vfkpvTbiHBUvU8CF8hMfZDsUfAJqrrRjGDaIgveorO/ wAshQS99G/rNI+K6MUsHF4lz+qqfHcsW+Njns83/XNG3AM4Qbk0GXSl0AuzORAVclLFv KqnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688927378; x=1691519378; 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=KMA70dMb1SJ/eTe/2+zO5JW0aBcXeIGHYSkfDyZwFgY=; b=MkrGHwcBNi8K0fdKXh6UI2buL5g4JhJm7toXA3Uo0tcFv9MBxxdmmBMO7sKjIffpuf NyJgGx/OLahO6hpRhJesaWXV0dJW1T/BQ+ZqtEz3tY+7QAqw9zMjiCf9nHM9CckZikrQ hqcMkwmc08U2+lgnI//LAxb1L9YmS5qHIknx4kxWQtGnqTFCIkh+bKdUaC4ctg4XMliM 6yD28u4tmGWtpH0a6XW7CPd2sa2/w5Phfr2AaDVUZDpWeQT04kQ/zTNBfdXliVHfRne6 GGULNioIYloGOp3H5rVLDCXEto6YxqRGeHggkVgivCeNTK8qPNH3xsgPTMvMJNl+hzoW bP9w== X-Gm-Message-State: ABy/qLadFzZnRkAWiCHoJKex33ioqyvQvOY2nxfBpecs2Aj1SJtwrVXe TEBZsL5C/j8oy02oJIZ9TzB9YA/gs1aKess9nYYZLQ== X-Google-Smtp-Source: APBJJlEt+OzP4hNfNeJnCOumOQkeCTRBBgZxaMJx5irg7wMTEN40iKNxJmOXoJiBYdmvxgVSDreCHg== X-Received: by 2002:a1c:730b:0:b0:3fb:c384:89ef with SMTP id d11-20020a1c730b000000b003fbc38489efmr8136991wmb.17.1688927378392; Sun, 09 Jul 2023 11:29:38 -0700 (PDT) Received: from stoup.. ([148.252.133.210]) by smtp.gmail.com with ESMTPSA id q15-20020a7bce8f000000b003fbe791a0e8sm8317108wmj.0.2023.07.09.11.29.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Jul 2023 11:29:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Daniel Henrique Barboza Subject: [PULL 01/37] util: Add cpuinfo-ppc.c Date: Sun, 9 Jul 2023 19:28:14 +0100 Message-Id: <20230709182934.309468-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230709182934.309468-1-richard.henderson@linaro.org> References: <20230709182934.309468-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::331; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x331.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, T_SCC_BODY_TEXT_LINE=-0.01 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Move the code from tcg/. Fix a bug in that PPC_FEATURE2_ARCH_3_10 is actually spelled PPC_FEATURE2_ARCH_3_1. Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Daniel Henrique Barboza Signed-off-by: Richard Henderson --- host/include/ppc/host/cpuinfo.h | 29 ++++++++++++++++ host/include/ppc64/host/cpuinfo.h | 1 + tcg/ppc/tcg-target.h | 16 ++++----- util/cpuinfo-ppc.c | 56 +++++++++++++++++++++++++++++++ tcg/ppc/tcg-target.c.inc | 44 +----------------------- util/meson.build | 2 ++ 6 files changed, 97 insertions(+), 51 deletions(-) create mode 100644 host/include/ppc/host/cpuinfo.h create mode 100644 host/include/ppc64/host/cpuinfo.h create mode 100644 util/cpuinfo-ppc.c diff --git a/host/include/ppc/host/cpuinfo.h b/host/include/ppc/host/cpuinfo.h new file mode 100644 index 0000000000..df11e8d417 --- /dev/null +++ b/host/include/ppc/host/cpuinfo.h @@ -0,0 +1,29 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Host specific cpu indentification for ppc. + */ + +#ifndef HOST_CPUINFO_H +#define HOST_CPUINFO_H + +/* Digested version of */ + +#define CPUINFO_ALWAYS (1u << 0) /* so cpuinfo is nonzero */ +#define CPUINFO_V2_06 (1u << 1) +#define CPUINFO_V2_07 (1u << 2) +#define CPUINFO_V3_0 (1u << 3) +#define CPUINFO_V3_1 (1u << 4) +#define CPUINFO_ISEL (1u << 5) +#define CPUINFO_ALTIVEC (1u << 6) +#define CPUINFO_VSX (1u << 7) + +/* Initialized with a constructor. */ +extern unsigned cpuinfo; + +/* + * We cannot rely on constructor ordering, so other constructors must + * use the function interface rather than the variable above. + */ +unsigned cpuinfo_init(void); + +#endif /* HOST_CPUINFO_H */ diff --git a/host/include/ppc64/host/cpuinfo.h b/host/include/ppc64/host/cpuinfo.h new file mode 100644 index 0000000000..2f036a0627 --- /dev/null +++ b/host/include/ppc64/host/cpuinfo.h @@ -0,0 +1 @@ +#include "host/include/ppc/host/cpuinfo.h" diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h index c7552b6391..9a41fab8cc 100644 --- a/tcg/ppc/tcg-target.h +++ b/tcg/ppc/tcg-target.h @@ -25,6 +25,8 @@ #ifndef PPC_TCG_TARGET_H #define PPC_TCG_TARGET_H +#include "host/cpuinfo.h" + #define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1) #define TCG_TARGET_NB_REGS 64 @@ -61,14 +63,12 @@ typedef enum { tcg_isa_3_10, } TCGPowerISA; -extern TCGPowerISA have_isa; -extern bool have_altivec; -extern bool have_vsx; - -#define have_isa_2_06 (have_isa >= tcg_isa_2_06) -#define have_isa_2_07 (have_isa >= tcg_isa_2_07) -#define have_isa_3_00 (have_isa >= tcg_isa_3_00) -#define have_isa_3_10 (have_isa >= tcg_isa_3_10) +#define have_isa_2_06 (cpuinfo & CPUINFO_V2_06) +#define have_isa_2_07 (cpuinfo & CPUINFO_V2_07) +#define have_isa_3_00 (cpuinfo & CPUINFO_V3_0) +#define have_isa_3_10 (cpuinfo & CPUINFO_V3_1) +#define have_altivec (cpuinfo & CPUINFO_ALTIVEC) +#define have_vsx (cpuinfo & CPUINFO_VSX) /* optional instructions automatically implemented */ #define TCG_TARGET_HAS_ext8u_i32 0 /* andi */ diff --git a/util/cpuinfo-ppc.c b/util/cpuinfo-ppc.c new file mode 100644 index 0000000000..d95adc8ccd --- /dev/null +++ b/util/cpuinfo-ppc.c @@ -0,0 +1,56 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Host specific cpu indentification for ppc. + */ + +#include "qemu/osdep.h" +#include "host/cpuinfo.h" + +#ifdef CONFIG_GETAUXVAL +# include +#else +# include +# include "elf.h" +#endif + +unsigned cpuinfo; + +/* Called both as constructor and (possibly) via other constructors. */ +unsigned __attribute__((constructor)) cpuinfo_init(void) +{ + unsigned info = cpuinfo; + unsigned long hwcap, hwcap2; + + if (info) { + return info; + } + + hwcap = qemu_getauxval(AT_HWCAP); + hwcap2 = qemu_getauxval(AT_HWCAP2); + info = CPUINFO_ALWAYS; + + /* Version numbers are monotonic, and so imply all lower versions. */ + if (hwcap2 & PPC_FEATURE2_ARCH_3_1) { + info |= CPUINFO_V3_1 | CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap2 & PPC_FEATURE2_ARCH_3_00) { + info |= CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap2 & PPC_FEATURE2_ARCH_2_07) { + info |= CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap & PPC_FEATURE_ARCH_2_06) { + info |= CPUINFO_V2_06; + } + + if (hwcap2 & PPC_FEATURE2_HAS_ISEL) { + info |= CPUINFO_ISEL; + } + if (hwcap & PPC_FEATURE_HAS_ALTIVEC) { + info |= CPUINFO_ALTIVEC; + /* We only care about the portion of VSX that overlaps Altivec. */ + if (hwcap & PPC_FEATURE_HAS_VSX) { + info |= CPUINFO_VSX; + } + } + + cpuinfo = info; + return info; +} diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index 5c8378f8f6..c866f2c997 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -101,10 +101,7 @@ #define ALL_GENERAL_REGS 0xffffffffu #define ALL_VECTOR_REGS 0xffffffff00000000ull -TCGPowerISA have_isa; -static bool have_isel; -bool have_altivec; -bool have_vsx; +#define have_isel (cpuinfo & CPUINFO_ISEL) #ifndef CONFIG_SOFTMMU #define TCG_GUEST_BASE_REG 30 @@ -3879,45 +3876,6 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) static void tcg_target_init(TCGContext *s) { - unsigned long hwcap = qemu_getauxval(AT_HWCAP); - unsigned long hwcap2 = qemu_getauxval(AT_HWCAP2); - - have_isa = tcg_isa_base; - if (hwcap & PPC_FEATURE_ARCH_2_06) { - have_isa = tcg_isa_2_06; - } -#ifdef PPC_FEATURE2_ARCH_2_07 - if (hwcap2 & PPC_FEATURE2_ARCH_2_07) { - have_isa = tcg_isa_2_07; - } -#endif -#ifdef PPC_FEATURE2_ARCH_3_00 - if (hwcap2 & PPC_FEATURE2_ARCH_3_00) { - have_isa = tcg_isa_3_00; - } -#endif -#ifdef PPC_FEATURE2_ARCH_3_10 - if (hwcap2 & PPC_FEATURE2_ARCH_3_10) { - have_isa = tcg_isa_3_10; - } -#endif - -#ifdef PPC_FEATURE2_HAS_ISEL - /* Prefer explicit instruction from the kernel. */ - have_isel = (hwcap2 & PPC_FEATURE2_HAS_ISEL) != 0; -#else - /* Fall back to knowing Power7 (2.06) has ISEL. */ - have_isel = have_isa_2_06; -#endif - - if (hwcap & PPC_FEATURE_HAS_ALTIVEC) { - have_altivec = true; - /* We only care about the portion of VSX that overlaps Altivec. */ - if (hwcap & PPC_FEATURE_HAS_VSX) { - have_vsx = true; - } - } - tcg_target_available_regs[TCG_TYPE_I32] = 0xffffffff; tcg_target_available_regs[TCG_TYPE_I64] = 0xffffffff; if (have_altivec) { diff --git a/util/meson.build b/util/meson.build index 3a93071d27..a375160286 100644 --- a/util/meson.build +++ b/util/meson.build @@ -113,4 +113,6 @@ if cpu == 'aarch64' util_ss.add(files('cpuinfo-aarch64.c')) elif cpu in ['x86', 'x86_64'] util_ss.add(files('cpuinfo-i386.c')) +elif cpu in ['ppc', 'ppc64'] + util_ss.add(files('cpuinfo-ppc.c')) endif