2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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/* Set flags signalling availability of kernel features based on given
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kernel version number.
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2014-01-01 21:03:15 +10:00
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Copyright (C) 2008-2014 Free Software Foundation, Inc.
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2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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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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2012-03-09 23:56:38 +00:00
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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Fix __ASSUME_ACCEPT4 issues (bug 16609).
In <https://sourceware.org/ml/libc-alpha/2013-12/msg00008.html>,
Aurelien noted issues with the definition of __ASSUME_ACCEPT4, which I
discussed in more detail in
<https://sourceware.org/ml/libc-alpha/2013-12/msg00014.html>; these
are now bug 16609.
As previously noted, __ASSUME_ACCEPT4 is used in two ways:
* In OS-independent code, to mean "accept4 can be assumed to work
rather than fail with ENOSYS". It doesn't matter whether it's
implemented with socketcall or a separate syscall.
* In Linux-specific code, to mean "the socketcall multiplex syscall
can be assumed to handle the accept4 operation. When used in
Linux-specific code, it *never* refers to anything relating to the
accept4 syscall, only to the socketcall multiplexer.
This patch splits the macro into separate __ASSUME_ACCEPT4_SOCKETCALL,
__ASSUME_ACCEPT4_SYSCALL and __ASSUME_ACCEPT4 to clarify the different
cases involved. A macro __ASSUME_SOCKETCALL is added for convenience
in writing logic relating to all socketcall architectures. In
addition, to address the issue of architectures where socketcall
support for accept4 was added before a separate syscall was added (and
so the separate syscall should not be used unless known to be present
or fallback to socketcall is available), a fourth macro
__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL is added to indicate that the
syscall became available at the same time as socketcall support. This
is then used in the relevant places in a conditional determining
whether to undefine __NR_accept4 (the simple approach to avoiding the
syscall's presence causing problems; I didn't try to implement runtime
fallback from the syscall to socketcall).
Architecture-specific note: alpha defined __ASSUME_ACCEPT4 for 2.6.33
and later, but actually the syscall was added for alpha in 3.2, so
this patch uses the correct condition for __ASSUME_ACCEPT4_SYSCALL
there.
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16609]
* sysdeps/unix/sysv/linux/kernel-features.h [__i386__ ||
__powerpc__ || __s390__ || __sh__ || __sparc__]
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION && __ASSUME_SOCKETCALL]
(__ASSUME_ACCEPT4_SOCKETCALL): Likewise.
[(__LINUX_KERNEL_VERSION >= 0x02061c && (__x86_64__ || __sparc__))
|| (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__ ||
__sh__))] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_ACCEPT4_SOCKETCALL || __ASSUME_ACCEPT4_SYSCALL]
(__ASSUME_ACCEPT4): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x02061c && (__i386__ || __x86_64__ ||
__powerpc__ || __sparc__ || __s390__)] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/accept4.c [__ASSUME_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[!__ASSUME_ACCEPT4]: Change condition to
[!__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL. Correct
condition to [__LINUX_KERNEL_VERSION >= 0x030200].
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020624] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/i386/accept4.S [__ASSUME_ACCEPT4]:
Change conditions to [__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/internal_accept4.S [__ASSUME_SOCKETCALL
&& !__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[__ASSUME_ACCEPT4]: Change condition to
[__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION >= 0x02061c] (__ASSUME_ACCEPT4): Remove.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
(__ASSUME_ACCEPT4): Remove.
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_ACCEPT4_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x02061f] (__ASSUME_ACCEPT4_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_ACCEPT4_SYSCALL):
Define.
2014-02-20 17:50:31 +00:00
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/* m68k uses socketcall. */
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#define __ASSUME_SOCKETCALL 1
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2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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/* Many syscalls were added in 2.6.10 for m68k. */
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2012-08-07 16:40:32 +00:00
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#define __ASSUME_UTIMES 1
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2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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2013-02-08 23:18:53 +01:00
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/* Support for various CLOEXEC and NONBLOCK flags was added 2.6.23. */
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#if __LINUX_KERNEL_VERSION >= 0x020617
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# define __ASSUME_O_CLOEXEC 1
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#endif
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/* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.27. */
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#if __LINUX_KERNEL_VERSION >= 0x02061b
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# define __ASSUME_SOCK_CLOEXEC 1
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# define __ASSUME_IN_NONBLOCK 1
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# define __ASSUME_PIPE2 1
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# define __ASSUME_EVENTFD2 1
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# define __ASSUME_SIGNALFD4 1
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# define __ASSUME_DUP3 1
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#endif
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2008-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
2008-08-10 08:43:09 +00:00
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#include_next <kernel-features.h>
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2012-03-13 14:30:53 +01:00
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/* These syscalls were added only in 3.0 for m68k. */
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#if __LINUX_KERNEL_VERSION < 0x030000
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# undef __ASSUME_PSELECT
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# undef __ASSUME_PPOLL
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#endif
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2013-12-04 01:35:01 +01:00
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/* No support for PI futexes or robust mutexes before 3.10 for m68k. */
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#if __LINUX_KERNEL_VERSION < 0x030a00
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# undef __ASSUME_REQUEUE_PI
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# undef __ASSUME_SET_ROBUST_LIST
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#endif
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