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* 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.
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/* Macros to swap the order of bytes in integer values. m68k version.
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Copyright (C) 1997, 2002, 2008 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
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# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
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#endif
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#ifndef _BITS_BYTESWAP_H
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#define _BITS_BYTESWAP_H 1
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/* Swap bytes in 16 bit value. We don't provide an assembler version
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because GCC is smart enough to generate optimal assembler output, and
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this allows for better cse. */
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#define __bswap_constant_16(x) \
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((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8))
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#ifdef __GNUC__
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# define __bswap_16(x) \
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(__extension__ \
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({ unsigned short int __bsx = (x); __bswap_constant_16 (__bsx); }))
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#else
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static __inline unsigned short int
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__bswap_16 (unsigned short int __bsx)
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{
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return __bswap_constant_16 (__bsx);
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}
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#endif
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/* Swap bytes in 32 bit value. */
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#define __bswap_constant_32(x) \
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((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) | \
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(((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24))
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#if defined __GNUC__ && __GNUC__ >= 2 && !defined(__mcoldfire__)
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# define __bswap_32(x) \
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__extension__ \
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({ unsigned int __bswap_32_v; \
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if (__builtin_constant_p (x)) \
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__bswap_32_v = __bswap_constant_32 (x); \
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else \
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__asm__ __volatile__ ("ror%.w %#8, %0;" \
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"swap %0;" \
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"ror%.w %#8, %0" \
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: "=d" (__bswap_32_v) \
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: "0" ((unsigned int) (x))); \
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__bswap_32_v; })
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#else
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static __inline unsigned int
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__bswap_32 (unsigned int __bsx)
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{
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return __bswap_constant_32 (__bsx);
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}
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#endif
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#if defined __GNUC__ && __GNUC__ >= 2
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/* Swap bytes in 64 bit value. */
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# define __bswap_constant_64(x) \
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((((x) & 0xff00000000000000ull) >> 56) \
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| (((x) & 0x00ff000000000000ull) >> 40) \
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| (((x) & 0x0000ff0000000000ull) >> 24) \
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| (((x) & 0x000000ff00000000ull) >> 8) \
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| (((x) & 0x00000000ff000000ull) << 8) \
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| (((x) & 0x0000000000ff0000ull) << 24) \
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| (((x) & 0x000000000000ff00ull) << 40) \
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| (((x) & 0x00000000000000ffull) << 56))
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/* Swap bytes in 64 bit value. */
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# define __bswap_64(x) \
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__extension__ \
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({ union { unsigned long long int __ll; \
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unsigned long int __l[2]; } __bswap_64_v, __bswap_64_r; \
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if (__builtin_constant_p (x)) \
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__bswap_64_r.__ll = __bswap_constant_64 (x); \
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else \
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{ \
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__bswap_64_v.__ll = (x); \
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__bswap_64_r.__l[0] = __bswap_32 (__bswap_64_v.__l[1]); \
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__bswap_64_r.__l[1] = __bswap_32 (__bswap_64_v.__l[0]); \
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} \
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__bswap_64_r.__ll; })
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#endif
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#endif /* _BITS_BYTESWAP_H */
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