diff options
Diffstat (limited to 'sysdeps/generic/bits')
| -rw-r--r-- | sysdeps/generic/bits/byteswap.h | 19 | ||||
| -rw-r--r-- | sysdeps/generic/bits/mman.h | 8 |
2 files changed, 18 insertions, 9 deletions
diff --git a/sysdeps/generic/bits/byteswap.h b/sysdeps/generic/bits/byteswap.h index 5f08fed613..949ed0bc9d 100644 --- a/sysdeps/generic/bits/byteswap.h +++ b/sysdeps/generic/bits/byteswap.h @@ -25,32 +25,35 @@ #define _BITS_BYTESWAP_H 1 /* Swap bytes in 16 bit value. */ +#define __bswap_constant_16(x) \ + ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)) + #ifdef __GNUC__ # define __bswap_16(x) \ (__extension__ \ - ({ unsigned short int __bsx = (x); \ - ((((__bsx) >> 8) & 0xffu) | (((__bsx) & 0xffu) << 8)); })) + ({ unsigned short int __bsx = (x); __bswap_constant_16 (__bsx); })) #else static __inline unsigned short int __bswap_16 (unsigned short int __bsx) { - return ((((__bsx) >> 8) & 0xffu) | (((__bsx) & 0xffu) << 8)); + return __bswap_constant_16 (__bsx); } #endif /* Swap bytes in 32 bit value. */ +#define __bswap_constant_32(x) \ + ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) | \ + (((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24)) + #ifdef __GNUC__ # define __bswap_32(x) \ (__extension__ \ - ({ unsigned int __bsx = (x); \ - ((((__bsx) & 0xff000000u) >> 24) | (((__bsx) & 0x00ff0000u) >> 8) | \ - (((__bsx) & 0x0000ff00u) << 8) | (((__bsx) & 0x000000ffu) << 24)); })) + ({ register unsigned int __bsx = (x); __bswap_constant_32 (__bsx); })) #else static __inline unsigned int __bswap_32 (unsigned int __bsx) { - return ((((__bsx) & 0xff000000u) >> 24) | (((__bsx) & 0x00ff0000u) >> 8) | - (((__bsx) & 0x0000ff00u) << 8) | (((__bsx) & 0x000000ffu) << 24)); + return __bswap_constant_32 (__bsx); } #endif diff --git a/sysdeps/generic/bits/mman.h b/sysdeps/generic/bits/mman.h index a2ee064cae..0c15902706 100644 --- a/sysdeps/generic/bits/mman.h +++ b/sysdeps/generic/bits/mman.h @@ -1,5 +1,5 @@ /* Definitions for BSD-style memory management. - Copyright (C) 1994-1998,2000,01,02 Free Software Foundation, Inc. + Copyright (C) 1994-1998,2000,01,02,05 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -85,6 +85,12 @@ #define MS_SYNC 0 /* Synchronous memory sync. */ #define MS_INVALIDATE 2 /* Invalidate the caches. */ +/* Flags for `mremap'. */ +#ifdef __USE_GNU +# define MREMAP_MAYMOVE 1 /* Mapping address may change. */ +# define MREMAP_FIXED 2 /* Fifth argument sets new address. */ +#endif + /* Flags for `mlockall' (can be OR'd together). */ #define MCL_CURRENT 1 /* Lock all currently mapped pages. */ #define MCL_FUTURE 2 /* Lock all additions to address |