From nobody Mon Feb 9 09:21:29 2026 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 ARC-Seal: i=1; a=rsa-sha256; t=1625467483; cv=none; d=zohomail.com; s=zohoarc; b=dNNJG77OBOwTLZpU5/5nFD07tmsXjOWiPHmoFC8qQVzhfZAFGTb+mtwbmARt3s3yKwt0FWJH+Y46dkUAWRlLUAvtgbTkClszd5A4foNmZmP2+hVwzI2LsFBqcdtU3/r7ll/VoEe80RZcSQGmhFDJS8tBkrat3ckzMifJ/01qT/U= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1625467483; h=Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=TQWo2oZwttV6vBuy8C2L+FSGnVkhpVhO+aqWLQLsITk=; b=QyCMv1GRlRXbNGgw5m2fFrVa8NZlNEPmozEK4NX2y78Nsvd+939LSoLv36K7jFMVCnK1t6AT+yPZkajOBMWnfSwxCgO2pVAhMCWIoy0tZu1R6HTXQLVI6uRLtYFuGDn1WGxIa1j4LNbT8iFiLgpqoURwTzs9xD6/rKeBzD8SB4o= 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1625467483451859.7644281960597; Sun, 4 Jul 2021 23:44:43 -0700 (PDT) Received: from localhost ([::1]:41302 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0ILR-0008VC-Kf for importer@patchew.org; Mon, 05 Jul 2021 02:44:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56268) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0IKZ-0007jj-UL for qemu-devel@nongnu.org; Mon, 05 Jul 2021 02:43:49 -0400 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]:45783) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m0IKW-0001ev-00 for qemu-devel@nongnu.org; Mon, 05 Jul 2021 02:43:47 -0400 Received: by mail-pj1-x1030.google.com with SMTP id b8-20020a17090a4888b02901725eedd346so8255481pjh.4 for ; Sun, 04 Jul 2021 23:43:42 -0700 (PDT) Received: from hsinchu02.internal.sifive.com (59-124-168-89.HINET-IP.hinet.net. [59.124.168.89]) by smtp.gmail.com with ESMTPSA id x13sm10310233pjh.30.2021.07.04.23.43.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Jul 2021 23:43:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TQWo2oZwttV6vBuy8C2L+FSGnVkhpVhO+aqWLQLsITk=; b=RaH8YSQMXG6dK6ektMT1zk89ssmvTEMM7GpgJGSLhghXfeNG0Y/MSb8i+0MUXew6OB XkTPyGnujH3vF3k7lt+7Oi6e+Ct826HK3jHLcV3EZBrsxcpDWMSsmp6Z/62iB1sPV/lr Kdfi/RwoBZ9INQ8KrN0tPZGCB+gxUIgjjKcxKdHN0VfCUauK8N+cqXAVYjd8bQK3bmf/ 2irQPv6x9wt5Am5yWY811fIa3OAz7KMCp7nHuA77nsSxPLd1c82r10C/haPVjZ0KkBml L6Y5m+OvzH7/kT16PyAm6f7Ap7cPFGuh+KQgMebZ3QT0XpxVQcts104O3vDW+WPLUvCc pWbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TQWo2oZwttV6vBuy8C2L+FSGnVkhpVhO+aqWLQLsITk=; b=NjW90Fe+I05qXoTDamZCTsQJDnHFJMJwfqNZbocY3O82m6M2mKTfCY0JDtQXEIu8Iq ZK6Bks518YyHdLYufWEH7qraNsDgl1Ot1zLFGwz7i5pw4GPoUlRPu5F51RCNY5W6U/ED eo5PbtlZtEbOqkslmVwMPvLyIzsdgS8jXejeQAx1tBLFoAqV5BsbpNDTeRQYbV9jmFso /kSuAec4TXyXtY2A7hq8PXWHxBdOFjICqBfnQMOMMA28XujE927MviU8BLeDYgkDM+yL k99CfN1Mt8+QWcKSBI91PiD7bJ0o8ZgjhTNt9G6NSVLEiuZx2ZlBc3H7CQ1pg3cKQCdQ gnXw== X-Gm-Message-State: AOAM532blxPs6ADRrK48EBhWYUg6FHdUZEREHXfFRx5QOqss46tW1uBj ZLBEkXZn9NSrOEgUyU/7RJjMOg== X-Google-Smtp-Source: ABdhPJwC02yREwXm366IdDGVvvsB53VqIsjXbb5mSRqoGbyurvzqfIjRoSqCB6leSNwblj6u9m1opQ== X-Received: by 2002:a17:902:7c91:b029:129:8c0f:853 with SMTP id y17-20020a1709027c91b02901298c0f0853mr3574355pll.62.1625467421352; Sun, 04 Jul 2021 23:43:41 -0700 (PDT) From: Kito Cheng To: alistair.francis@wdc.com, palmer@dabbelt.com, frank.chang@sifive.com, qemu-devel@nongnu.org, qemu-riscv@nongnu.org, richard.henderson@linaro.org Subject: [PATCH v2] linux-user/elfload: Implement ELF_HWCAP for RISC-V Date: Mon, 5 Jul 2021 14:43:26 +0800 Message-Id: <20210705064326.81958-1-kito.cheng@sifive.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 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::1030; envelope-from=kito.cheng@sifive.com; helo=mail-pj1-x1030.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kito Cheng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @sifive.com) X-ZM-MESSAGEID: 1625467489686100001 Content-Type: text/plain; charset="utf-8" Set I, M, A, F, D and C bit for hwcap if misa is set. V2 Changes: - Only set imafdc bits, sync with upstream linux kernel. Signed-off-by: Kito Cheng --- linux-user/elfload.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 598ab8aa13..3cdc7d06e1 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1426,7 +1426,7 @@ static void elf_core_copy_regs(target_elf_gregset_t *= regs, #ifdef TARGET_RISCV =20 #define ELF_START_MMAP 0x80000000 -#define ELF_ARCH EM_RISCV +#define ELF_ARCH EM_RISCV =20 #ifdef TARGET_RISCV32 #define ELF_CLASS ELFCLASS32 @@ -1434,6 +1434,34 @@ static void elf_core_copy_regs(target_elf_gregset_t = *regs, #define ELF_CLASS ELFCLASS64 #endif =20 +#define ELF_HWCAP get_elf_hwcap() + +static uint32_t get_elf_hwcap(void) +{ + RISCVCPU *cpu =3D RISCV_CPU(thread_cpu); + uint32_t hwcap =3D 0; + +#define MISA_BIT(EXT) (1 << (EXT - 'A')) +#define GET_EXT(EXT) \ + do { \ + if (cpu->env.misa & MISA_BIT(EXT)) { \ + hwcap |=3D MISA_BIT(EXT); \ + } \ + } while (0) + + GET_EXT('I'); + GET_EXT('M'); + GET_EXT('A'); + GET_EXT('F'); + GET_EXT('D'); + GET_EXT('C'); + +#undef MISA_BIT +#undef GET_EXT + + return hwcap; +} + static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) { --=20 2.31.1