diff options
| author | David McCullough <davidm@snapgear.com> | 2003-10-14 11:52:32 +0000 |
|---|---|---|
| committer | David McCullough <davidm@snapgear.com> | 2003-10-14 11:52:32 +0000 |
| commit | 94b92c2fab333403aa43fd55ec858fdbf666f8c3 (patch) | |
| tree | 10e30871a37756c010dbbb26326bf934ba434552 /libc/sysdeps/linux/microblaze/bits/select.h | |
| parent | 34c5a8290b32d93beca6ae8f9c346bbadf408591 (diff) | |
Microblaze port from the uClinux-dist,
contributed by John Williams <jwilliams@itee.uq.edu.au>
Diffstat (limited to 'libc/sysdeps/linux/microblaze/bits/select.h')
| -rw-r--r-- | libc/sysdeps/linux/microblaze/bits/select.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/microblaze/bits/select.h b/libc/sysdeps/linux/microblaze/bits/select.h new file mode 100644 index 000000000..7c787b324 --- /dev/null +++ b/libc/sysdeps/linux/microblaze/bits/select.h @@ -0,0 +1,58 @@ +/* + * include/bits/select.h -- fd_set operations + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001 NEC Corporation + * Copyright (C) 2001 Miles Bader <miles@gnu.org> + * Copyright (C) 1997, 1998 Free Software Foundation, Inc. + * + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License. See the file COPYING.LIB in the main + * directory of this archive for more details. + */ + +#ifndef _SYS_SELECT_H +# error "Never use <bits/select.h> directly; include <sys/select.h> instead." +#endif + +#ifdef __GNUC__ + +/* We don't use `memset' because this would require a prototype and + the array isn't too big. */ +#define __FD_ZERO(s) \ + do { \ + unsigned int __i; \ + fd_set *__arr = (s); \ + for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \ + __FDS_BITS (__arr)[__i] = 0; \ + } while (0) + +#define __FD_SET(fd, s) \ + do { \ + int __fd = (fd); \ + unsigned int *__addr = (unsigned int *)&__FDS_BITS (s); \ + *__addr |= (1 << __fd); \ + } while (0) + +#define __FD_CLR(fd, s) \ + do { \ + int __fd = (fd); \ + unsigned int *__addr = (unsigned int *)&__FDS_BITS (s); \ + *__addr &= ~(1 << __fd); \ + } while (0) + +#define __FD_ISSET(fd, s) \ + ({ \ + int __fd = (fd); \ + unsigned int *__addr = (unsigned int *)&__FDS_BITS (s); \ + int res; \ + res = (*__addr & (1 << fd)) ? 1 : 0; \ + }) + +#else /* !__GNUC__ */ + +#define __FD_SET(d, s) (__FDS_BITS (s)[__FDELT(d)] |= __FDMASK(d)) +#define __FD_CLR(d, s) (__FDS_BITS (s)[__FDELT(d)] &= ~__FDMASK(d)) +#define __FD_ISSET(d, s) ((__FDS_BITS (s)[__FDELT(d)] & __FDMASK(d)) != 0) + +#endif /* __GNUC__ */ |