From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI, RCVD_IN_MSPIKE_H2 autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 15523 invoked from network); 3 Jan 2023 15:21:24 -0000 Received: from second.openwall.net (193.110.157.125) by inbox.vuxu.org with ESMTPUTF8; 3 Jan 2023 15:21:24 -0000 Received: (qmail 1371 invoked by uid 550); 3 Jan 2023 15:21:19 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 1335 invoked from network); 3 Jan 2023 15:21:18 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=glJK5JFY80rBdBjuMe96fvEaT/u4ouQ4fEn4o2o8hHs=; b=ppjPHub5sAeX7aO0D3e8xdQurC3QQcZE2PRLRxqQw+Njvmurxoy8fhz44Vl5dDmN5P DendeHxfXFdFW07wG5yWNLtM+VinieV7RbjhHX9rth0hjvwrr7PO6bhql245MypmwMw+ HuDAANayfd6BMiYAA+Lqyn48gSSzapcPtC+WeVwwaoVtC9XtNwKg6tTyIzt+eYJDb1iZ w9LVKXvqz/Q/2wQefdutOoxp+oYOyrSlh4qIWXrMS+8FbWXo2MQqGZVLIiMniwVnS+Gi O69hGnuk5B+K8tlhcxFjXbKeqrgv22bLxveONYyE1SAMtfsRgvxZ51guZ+6TrK+bLNf+ 9Pyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=glJK5JFY80rBdBjuMe96fvEaT/u4ouQ4fEn4o2o8hHs=; b=n7VwYH/UMTUROrwOZXlK/rnGVnpxuhejgGHlfcQtOyBKOLXzJplulyKbDaidyP7yVk TWgVrihZA28syV4HXXZd5lWfHa1nRUCdIlD0pm6Y7zdkuohMH5UFfxxgBFR1+mWlGra3 ccWHtJD/GsJCgVpwYBx35yfypEeaZKeU+LHa8gmjkf9ENSsJakuCRlQUbNOk1HSY156G ckO9A4GXmIkI5RtSMsVke3SeqGnDNdK+WFLykuUERGXt7MWf6p2SmmUv2vCVN0mdatse iR+jl2cIBEEBYaIEz3dOkz5aHgeskeqGKNRC3IdQHrJ7oHyODP1dYF1WrkgTEH3t9Bsc QnEw== X-Gm-Message-State: AFqh2krKNwGpdh6kfs/7/du4zsKnXgFair9987oYMjcQzzTOWp8MTG7Z 4h0v5sh/35+ujqv0YT8HXDB1HvQ1nKBhvw== X-Google-Smtp-Source: AMrXdXvYV47PaOH6zDjQmNa7jRtM9lVY125RilnvTY2rFGj2p1MUhiRbKpflxn0+6U6EFYD79nX5Qw== X-Received: by 2002:a05:600c:4da0:b0:3d2:3a53:2cd6 with SMTP id v32-20020a05600c4da000b003d23a532cd6mr31830693wmp.9.1672759267006; Tue, 03 Jan 2023 07:21:07 -0800 (PST) From: Pedro Falcato To: musl@lists.openwall.com Cc: Pedro Falcato Date: Tue, 3 Jan 2023 15:21:02 +0000 Message-Id: <20230103152102.21858-1-pedro.falcato@gmail.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [musl] [PATCH] riscv64: Add vfork Implement vfork() using clone(CLONE_VM | CLONE_VFORK | ...). --- src/process/riscv64/vfork.s | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 src/process/riscv64/vfork.s diff --git a/src/process/riscv64/vfork.s b/src/process/riscv64/vfork.s new file mode 100644 index 00000000..2f90329d --- /dev/null +++ b/src/process/riscv64/vfork.s @@ -0,0 +1,11 @@ +.global vfork +.type vfork,@function +vfork: + /* riscv does not have SYS_vfork, so we must use clone instead */ + /* note: riscv's clone = clone(flags, sp, ptidptr, tls, ctidptr) */ + li a7, 220 + li a0, 0x100 | 0x4000 | 17 /* flags = CLONE_VM | CLONE_VFORK | SIGCHLD */ + mv a1, sp + /* the other arguments are ignoreable */ + ecall + j __syscall_ret -- 2.39.0