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Fix warnings when using <sys/select.h>.

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gcc 4.4 is more picky.  And the x86-64 version of <bits/select.h>
contained a now unnecessary asm optimization.  Remove it.
This commit is contained in:
Ulrich Drepper 2009-06-14 16:09:42 -07:00
parent bfdb73e145
commit eb0b6cb6e1
3 changed files with 16 additions and 32 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2009-06-14 Ulrich Drepper <drepper@redhat.com>
[BZ #10229]
* misc/sys/select.h (__NFDBITS): Expression should have type int.
* sysdeps/x86_64/bits/select.h: Remove asm versions for __FD_SET,
__FD_CLR, and __FD_ISSET. gcc nowadays generates better code from
the C version.
2009-06-12 Ulrich Drepper <drepper@redhat.com>
* Versions.def: Add GLIBC_2.11 for libpthread.

4
misc/sys/select.h
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@ -1,5 +1,5 @@
/* `fd_set' type and related macros, and `select'/`pselect' declarations.
Copyright (C) 1996,97,98,99,2000,01,02,2003 Free Software Foundation, Inc.
Copyright (C) 1996-2003, 2009 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
@ -59,7 +59,7 @@ typedef long int __fd_mask;
#undef __FDELT
#undef __FDMASK
/* It's easier to assume 8-bit bytes than to get CHAR_BIT. */
#define __NFDBITS (8 * sizeof (__fd_mask))
#define __NFDBITS (8 * (int) sizeof (__fd_mask))
#define __FDELT(d) ((d) / __NFDBITS)
#define __FDMASK(d) ((__fd_mask) 1 << ((d) % __NFDBITS))

36
sysdeps/x86_64/bits/select.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1997, 1998, 1999, 2001, 2008 Free Software Foundation, Inc.
/* Copyright (C) 1997,1998,1999,2001,2008,2009 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
@ -27,14 +27,8 @@
# if __WORDSIZE == 64
# define __FD_ZERO_STOS "stosq"
# define __FD_SET_BTS "btsq"
# define __FD_CLR_BTR "btrq"
# define __FD_ISSET_BT "btq"
# else
# define __FD_ZERO_STOS "stosl"
# define __FD_SET_BTS "btsl"
# define __FD_CLR_BTR "btrl"
# define __FD_ISSET_BT "btl"
# endif
# define __FD_ZERO(fdsp) \
@ -48,26 +42,6 @@
: "memory"); \
} while (0)
# define __FD_SET(fd, fdsp) \
__asm__ __volatile__ (__FD_SET_BTS " %1,%0" \
: "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
: "r" (((int) (fd)) % __NFDBITS) \
: "cc","memory")
# define __FD_CLR(fd, fdsp) \
__asm__ __volatile__ (__FD_CLR_BTR " %1,%0" \
: "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
: "r" (((int) (fd)) % __NFDBITS) \
: "cc","memory")
# define __FD_ISSET(fd, fdsp) \
(__extension__ \
({register char __result; \
__asm__ __volatile__ (__FD_ISSET_BT " %1,%2 ; setcb %b0" \
: "=q" (__result) \
: "r" (((int) (fd)) % __NFDBITS), \
"m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
: "cc"); \
__result; }))
#else /* ! GNU CC */
/* We don't use `memset' because this would require a prototype and
@ -79,8 +53,10 @@
for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \
__FDS_BITS (__arr)[__i] = 0; \
} while (0)
# define __FD_SET(d, set) (__FDS_BITS (set)[__FDELT (d)] |= __FDMASK (d))
# define __FD_CLR(d, set) (__FDS_BITS (set)[__FDELT (d)] &= ~__FDMASK (d))
# define __FD_ISSET(d, set) (__FDS_BITS (set)[__FDELT (d)] & __FDMASK (d))
#endif /* GNU CC */
#define __FD_SET(d, set) (__FDS_BITS (set)[__FDELT (d)] |= __FDMASK (d))
#define __FD_CLR(d, set) (__FDS_BITS (set)[__FDELT (d)] &= ~__FDMASK (d))
#define __FD_ISSET(d, set) \
((__FDS_BITS (set)[__FDELT (d)] & __FDMASK (d)) != 0)