From 404fe9d90e0d38a2713e57062444d994a650130e Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 30 May 2012 15:49:31 -0700 Subject: Use x86_64 bits/select.h for i386/x86_64 --- sysdeps/x86/bits/select.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 sysdeps/x86/bits/select.h (limited to 'sysdeps/x86/bits/select.h') diff --git a/sysdeps/x86/bits/select.h b/sysdeps/x86/bits/select.h new file mode 100644 index 0000000000..439a914bfc --- /dev/null +++ b/sysdeps/x86/bits/select.h @@ -0,0 +1,63 @@ +/* Copyright (C) 1997-1999,2001,2008,2009,2011 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _SYS_SELECT_H +# error "Never use directly; include instead." +#endif + +#include + + +#if defined __GNUC__ && __GNUC__ >= 2 + +# if __WORDSIZE == 64 +# define __FD_ZERO_STOS "stosq" +# else +# define __FD_ZERO_STOS "stosl" +# endif + +# define __FD_ZERO(fdsp) \ + do { \ + int __d0, __d1; \ + __asm__ __volatile__ ("cld; rep; " __FD_ZERO_STOS \ + : "=c" (__d0), "=D" (__d1) \ + : "a" (0), "0" (sizeof (fd_set) \ + / sizeof (__fd_mask)), \ + "1" (&__FDS_BITS (fdsp)[0]) \ + : "memory"); \ + } while (0) + +#else /* ! GNU CC */ + +/* We don't use `memset' because this would require a prototype and + the array isn't too big. */ +# define __FD_ZERO(set) \ + do { \ + unsigned int __i; \ + fd_set *__arr = (set); \ + for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \ + __FDS_BITS (__arr)[__i] = 0; \ + } while (0) + +#endif /* GNU CC */ + +#define __FD_SET(d, set) \ + ((void) (__FDS_BITS (set)[__FD_ELT (d)] |= __FD_MASK (d))) +#define __FD_CLR(d, set) \ + ((void) (__FDS_BITS (set)[__FD_ELT (d)] &= ~__FD_MASK (d))) +#define __FD_ISSET(d, set) \ + ((__FDS_BITS (set)[__FD_ELT (d)] & __FD_MASK (d)) != 0) -- cgit 1.4.1