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[59.124.168.89]) by smtp.gmail.com with ESMTPSA id b4sm12650096pji.52.2021.07.05.20.50.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jul 2021 20:50:18 -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=D5A5Ewl7nsirJXuBn68BIIeUoz4BuYCdCCsGziBJUSw=; b=UZmqGQGtkpiditaSaIKu8hDapOjJi0LzcsbYslephw4iurAcnMQLF+LTSipWRhz5VN csOi4V/e0u44HPe7JyLUwcxPIpBYk3QqX7ywPbf13Zjfg8k/p4Hji7HGJeCvoWm9Crg9 vBKS8IzXIVQrfhv6SoYOMQOE86CrM7H31B1z830Pp8Djcu/ph4bXJa7rh9Gen59+Rltp zZKxP373Aap4e2YrC2NcIOYLYY2Ta2wtXEW24JfirR8PgCkCnkX9s76lLyIcZ0upI5oB hRDw9c4se++YrgSSC5nQDYkqdp4hIrGJkAc5uUsGt19w6UHv8EGKT2ZoBNZcz6+ZnyXo r2OQ== 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=D5A5Ewl7nsirJXuBn68BIIeUoz4BuYCdCCsGziBJUSw=; b=HE8M23IIeMXyZNQDJ77DeMg8O5Dl6n7Qomnq0oSYp+aMRGS5gLlqNtXV1qiBvqsJiN Rs90g9bhXwUhw08b772F6ofxhqNeBejDci526qu53cblN6NMufpFJic5LcdIZKYlA+Oq 8y1zl08RtQAEBAu68Zn/IZ2WbyUdyp6aQsfPmBDW6vvHDK2n9MxrCeZYhYx0r2kI6Gtj 56aOrHl0motg4Lg9N3qSVmo1YeHLEV4XkhVjbwkSvBZfwrY7BCf7/V4a/9Ri1cj+C1XF sIImzhYat/TvLuEHQ/F4RlGScPMkcyF1jm6j9damnYnogcvAHfPoPSKyY1MT5nBHrbP6 /0ew== X-Gm-Message-State: AOAM531mVAly5D5XMoDTzWZwiVlLn/q6yam2+xMRoqYFgLj37vi3VZFF O6rZXRY6/5/oaTnmeZZ/kQcpHA== X-Google-Smtp-Source: ABdhPJx96S/TIlHIXT8MN6EiZt09wYQC38nr1dftUB7gs7LunWQkRDP34uD+qcPlavRrXRBW+I1hSA== X-Received: by 2002:a05:6a00:2494:b029:31e:2c3f:4186 with SMTP id c20-20020a056a002494b029031e2c3f4186mr9912078pfv.25.1625543419386; Mon, 05 Jul 2021 20:50:19 -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 v3] linux-user/elfload: Implement ELF_HWCAP for RISC-V Date: Tue, 6 Jul 2021 11:50:15 +0800 Message-Id: <20210706035015.122899-1-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::42c; envelope-from=kito.cheng@sifive.com; helo=mail-pf1-x42c.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: 1625543513759100001 Content-Type: text/plain; charset="utf-8" Set I, M, A, F, D and C bit for hwcap if misa is set. V3 Changes: - Simplify logic of getting hwcap. V2 Changes: - Only set imafdc bits, sync with upstream linux kernel. Signed-off-by: Kito Cheng Reviewed-by: Richard Henderson --- linux-user/elfload.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 598ab8aa13..42ef2a1148 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1434,6 +1434,19 @@ 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) +{ +#define MISA_BIT(EXT) (1 << (EXT - 'A')) + RISCVCPU *cpu =3D RISCV_CPU(thread_cpu); + uint32_t mask =3D MISA_BIT('I') | MISA_BIT('M') | MISA_BIT('A') + | MISA_BIT('F') | MISA_BIT('D') | MISA_BIT('C'); + + return cpu->env.misa & mask; +#undef MISA_BIT +} + static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) { --=20 2.31.1