From nobody Fri Aug 08 09:37:44 2025 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4byzTh6LWQz63QrB; Fri, 08 Aug 2025 09:37:44 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4byzTh2Fgdz43KS; Fri, 08 Aug 2025 09:37:44 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754645864; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=KxBE7KCBlxO2NmsQ2xF0AlIWD3iajPrnkSkirYhhcmo=; b=OPgTFa8hyWU2AxaiJlFNGqwGigb6Xk/4Wjm/XVUrRS+n0YnqORrtybeBfD+P3cMn4HIgg1 T3TUrUyVWrx0Qq1CZfIrVY7PBRFBvwuO3LrkzZ/MEZfjC0E/zb9WShhhbNmmyJwqlLGP0P 3Bd5qcbQVunaVtHNAEetPaKxoTmNognE7yE6GZtcCL/vJBlss/G/6GWqV4Kzibg+FXbRfB nNaSLTFqwlcmwPFPrbQysHoKrOXZLOPdMRZTA2WctB8FbtG3WuEGjTYWZelkqj6KqrHG3F 89n9Du4eU3sGaYwlNLeNuJc+FHYTu8W1pC0Ot47vOv084eZbXo5Db0CSikWEJA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754645864; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=KxBE7KCBlxO2NmsQ2xF0AlIWD3iajPrnkSkirYhhcmo=; b=RwAyGyi0NJqKIGnpaGm4iCnOIH3xEYTZmkppANygOQPhtQShW6axkqhHgUpcult+Ljaau2 DywmKNR2oDL7xJCuZU4OToB92jdPH0NqtRya7lOr1dvkIe/m4b/VQYSO8aff06TwF2Ony5 cYaOLvp2jnDtO0bryIrBqQ6BtoA9hE5T01FjxPaEsIosBy6TXGGsecj8quhyKNK0tHsaLs gpzX71qHpEJ/4KoIju8PJlD/w5tlQYANnvBR/rADZdgaNoM2LgUeR3mhg5uwSuxC7Be/cp rCWjuGQHUWEhLomD4L8IC3KPnCQUuWWMpxaVU4OJaGQRxJISBdBkIVaNRP032g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1754645864; a=rsa-sha256; cv=none; b=RcFAHY80G9+5yIeH52NrRyIk4NBWMAUbgBJd4/TkTyJ0Gl83z9aGrhcokMnlsgj4KGFqrV y4TdTwrsgQzWkS2Hek+0hZPU+HNYYTa1GfSLoAMiycoddsm/AmGU+ZMWtaMAPOs4nMClpw WaIhs0U2q/lWI1jccSeH6+4OhDYrDivlrajTHy0Dv9XhqTkdv82rKgOw7yW9lNoVNlwWyb MRwbyXh5Q2ZT0SZRshBIzu8ullL/t5M8Nr1XM8F9texmAedoq5p1rpQfLOcaPjP7Cf0ubK eqymHz3qC6QrToqy0WuKA02ERWAPzwtKZaBji6wPrFrPl299JgjBoMZIYxZ1fQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4byzTh1qjNzVbB; Fri, 08 Aug 2025 09:37:44 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 5789biql083015; Fri, 8 Aug 2025 09:37:44 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 5789biTg083012; Fri, 8 Aug 2025 09:37:44 GMT (envelope-from git) Date: Fri, 8 Aug 2025 09:37:44 GMT Message-Id: <202508080937.5789biTg083012@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Brooks Davis Subject: git: 202ac0975edc - main - sysent: add a new NORETURN type flag List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: brooks X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 202ac0975edcc4729e7016a9e9cb921de45e3a70 Auto-Submitted: auto-generated The branch main has been updated by brooks: URL: https://cgit.FreeBSD.org/src/commit/?id=202ac0975edcc4729e7016a9e9cb921de45e3a70 commit 202ac0975edcc4729e7016a9e9cb921de45e3a70 Author: Brooks Davis AuthorDate: 2025-08-08 09:30:17 +0000 Commit: Brooks Davis CommitDate: 2025-08-08 09:30:17 +0000 sysent: add a new NORETURN type flag System calls of type NORETURN don't return and their stubs are declare not to. Reviewed by: kevans, kib Differential Revision: https://reviews.freebsd.org/D51673 --- sys/kern/syscalls.master | 1 + sys/tools/syscalls/core/syscall.lua | 1 + sys/tools/syscalls/scripts/libsys_h.lua | 8 ++++++-- 3 files changed, 8 insertions(+), 2 deletions(-) diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master index 29f9d9dae390..9329a4213828 100644 --- a/sys/kern/syscalls.master +++ b/sys/kern/syscalls.master @@ -51,6 +51,7 @@ ; SYSMUX syscall multiplexer. No prototype, argument struct, or ; handler is declared or used. Handled in MD syscall code. ; CAPENABLED syscall is allowed in capability mode +; NORETURN the syscall does not return ; ; To support programmatic generation of both the default ABI and 32-bit compat ; (freebsd32) we impose a number of restrictions on the types of system calls. diff --git a/sys/tools/syscalls/core/syscall.lua b/sys/tools/syscalls/core/syscall.lua index e7e3dc3aac33..277613ec27b7 100644 --- a/sys/tools/syscalls/core/syscall.lua +++ b/sys/tools/syscalls/core/syscall.lua @@ -28,6 +28,7 @@ syscall.known_flags = util.set { -- flags beyond this point are modifiers "CAPENABLED", "NOLIB", + "NORETURN", "NOTSTATIC", "SYSMUX", } diff --git a/sys/tools/syscalls/scripts/libsys_h.lua b/sys/tools/syscalls/scripts/libsys_h.lua index 91349d5dc870..8c1993ecf683 100755 --- a/sys/tools/syscalls/scripts/libsys_h.lua +++ b/sys/tools/syscalls/scripts/libsys_h.lua @@ -76,8 +76,12 @@ function libsys_h.generate(tbl, config, fh) for _, v in pairs(s) do if print_decl(v) then - gen:write(string.format("%s __sys_%s(%s);\n", - v.ret, v.name, v.argstr_type_var)) + local ret_attr = ""; + if v.type.NORETURN then + ret_attr = "_Noreturn " + end + gen:write(string.format("%s%s __sys_%s(%s);\n", + ret_attr, v.ret, v.name, v.argstr_type_var)) end end