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460860f457
Linux 6.7 removed ia64 from the official tree [1], following the general principle that a glibc port needs upstream support for the architecture in all the components it depends on (binutils, GCC, and the Linux kernel). Apart from the removal of sysdeps/ia64 and sysdeps/unix/sysv/linux/ia64, there are updates to various comments referencing ia64 for which removal of those references seemed appropriate. The configuration is removed from README and build-many-glibcs.py. The CONTRIBUTED-BY, elf/elf.h, manual/contrib.texi (the porting mention), *.po files, config.guess, and longlong.h are not changed. For Linux it allows cleanup some clone2 support on multiple files. The following bug can be closed as WONTFIX: BZ 22634 [2], BZ 14250 [3], BZ 21634 [4], BZ 10163 [5], BZ 16401 [6], and BZ 11585 [7]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ff221426d33db909f7159fdf620c3b052e2d1c [2] https://sourceware.org/bugzilla/show_bug.cgi?id=22634 [3] https://sourceware.org/bugzilla/show_bug.cgi?id=14250 [4] https://sourceware.org/bugzilla/show_bug.cgi?id=21634 [5] https://sourceware.org/bugzilla/show_bug.cgi?id=10163 [6] https://sourceware.org/bugzilla/show_bug.cgi?id=16401 [7] https://sourceware.org/bugzilla/show_bug.cgi?id=11585 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/* arch_fork definition for Linux fork implementation.
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Copyright (C) 2014-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef __ARCH_FORK_H
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#define __ARCH_FORK_H
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#include <sysdep.h>
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#include <sched.h>
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#include <signal.h>
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#include <unistd.h>
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/* Call the clone syscall with fork semantic. The CTID address is used
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to store the child thread ID at its locationm, to erase it in child memory
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when the child exits, and do a wakeup on the futex at that address.
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The architecture with non-default kernel abi semantic should correctly
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override it with one of the supported calling convention (check generic
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kernel-features.h for the clone abi variants). */
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static inline pid_t
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arch_fork (void *ctid)
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{
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const int flags = CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD;
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long int ret;
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#ifdef __ASSUME_CLONE_BACKWARDS
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# ifdef INLINE_CLONE_SYSCALL
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ret = INLINE_CLONE_SYSCALL (flags, 0, NULL, 0, ctid);
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# else
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ret = INLINE_SYSCALL_CALL (clone, flags, 0, NULL, 0, ctid);
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# endif
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#elif defined(__ASSUME_CLONE_BACKWARDS2)
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ret = INLINE_SYSCALL_CALL (clone, 0, flags, NULL, ctid, 0);
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#elif defined(__ASSUME_CLONE_BACKWARDS3)
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ret = INLINE_SYSCALL_CALL (clone, flags, 0, 0, NULL, ctid, 0);
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#elif defined(__ASSUME_CLONE_DEFAULT)
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ret = INLINE_SYSCALL_CALL (clone, flags, 0, NULL, ctid, 0);
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#else
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# error "Undefined clone variant"
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#endif
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return ret;
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}
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#endif /* __ARCH_FORK_H */
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