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-rw-r--r--sysdeps/i386/bits/select.h72
1 files changed, 59 insertions, 13 deletions
diff --git a/sysdeps/i386/bits/select.h b/sysdeps/i386/bits/select.h
index f21407f81f..2e31f3bc59 100644
--- a/sysdeps/i386/bits/select.h
+++ b/sysdeps/i386/bits/select.h
@@ -23,51 +23,97 @@
 
 #if defined __GNUC__ && __GNUC__ >= 2
 
-# define __FD_ZERO(fdsetp) \
+# ifdef __USE_XOPEN
+#  define __FD_ZERO(fdsp) \
   do {									      \
     int __d0, __d1;							      \
     __asm__ __volatile__ ("cld; rep; stosl"				      \
-			  : "=m" ((fdsetp)->fds_bits[__FDELT (__FD_SETSIZE)]),\
+			  : "=m" ((fdsp)->fds_bits[__FDELT (__FD_SETSIZE)]),  \
 			    "=&c" (__d0), "=&D" (__d1)			      \
 			  : "a" (0), "1" (sizeof (__fd_set)		      \
 					  / sizeof (__fd_mask)),	      \
-			    "2" (&(fdsetp)->fds_bits[0])		      \
+			    "2" (&(fdsp)->fds_bits[0])			      \
 			  : "memory");					      \
   } while (0)
 
-# define __FD_SET(fd, fdsetp) \
+#  define __FD_SET(fd, fdsp) \
   __asm__ __volatile__ ("btsl %1,%0"					      \
-			: "=m" ((fdsetp)->fds_bits[__FDELT (fd)])	      \
+			: "=m" ((fdsp)->fds_bits[__FDELT (fd)])		      \
 			: "r" (((int) (fd)) % __NFDBITS)		      \
 			: "cc","memory")
-# define __FD_CLR(fd, fdsetp) \
+#  define __FD_CLR(fd, fdsp) \
   __asm__ __volatile__ ("btrl %1,%0"					      \
-			: "=m" ((fdsetp)->fds_bits[__FDELT (fd)])	      \
+			: "=m" ((fdsp)->fds_bits[__FDELT (fd)])		      \
 			: "r" (((int) (fd)) % __NFDBITS)		      \
 			: "cc","memory")
-# define __FD_ISSET(fd, fdsetp) \
+#  define __FD_ISSET(fd, fdsp) \
   (__extension__							      \
    ({register char __result;						      \
      __asm__ __volatile__ ("btl %1,%2 ; setcb %b0"			      \
 			   : "=q" (__result)				      \
 			   : "r" (((int) (fd)) % __NFDBITS),		      \
-			     "m" ((fdsetp)->fds_bits[__FDELT (fd)])	      \
+			     "m" ((fdsp)->fds_bits[__FDELT (fd)])	      \
 			   : "cc");					      \
      __result; }))
+# else
+#  define __FD_ZERO(fdsp) \
+  do {									      \
+    int __d0, __d1;							      \
+    __asm__ __volatile__ ("cld; rep; stosl"				      \
+			  : "=m" ((fdsp)->__fds_bits[__FDELT (__FD_SETSIZE)]),\
+			    "=&c" (__d0), "=&D" (__d1)			      \
+			  : "a" (0), "1" (sizeof (__fd_set)		      \
+					  / sizeof (__fd_mask)),	      \
+			    "2" (&(fdsp)->__fds_bits[0])		      \
+			  : "memory");					      \
+  } while (0)
+
+#  define __FD_SET(fd, fdsp) \
+  __asm__ __volatile__ ("btsl %1,%0"					      \
+			: "=m" ((fdsp)->__fds_bits[__FDELT (fd)])	      \
+			: "r" (((int) (fd)) % __NFDBITS)		      \
+			: "cc","memory")
+#  define __FD_CLR(fd, fdsp) \
+  __asm__ __volatile__ ("btrl %1,%0"					      \
+			: "=m" ((fdsp)->__fds_bits[__FDELT (fd)])	      \
+			: "r" (((int) (fd)) % __NFDBITS)		      \
+			: "cc","memory")
+#  define __FD_ISSET(fd, fdsp) \
+  (__extension__							      \
+   ({register char __result;						      \
+     __asm__ __volatile__ ("btl %1,%2 ; setcb %b0"			      \
+			   : "=q" (__result)				      \
+			   : "r" (((int) (fd)) % __NFDBITS),		      \
+			     "m" ((fdsp)->__fds_bits[__FDELT (fd)])	      \
+			   : "cc");					      \
+     __result; }))
+# endif
 
 #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)  \
+# ifdef __USE_XOPEN
+#  define __FD_ZERO(set)  \
   do {									      \
     unsigned int __i;							      \
     __fd_set *__arr = (set);						      \
     for (__i = 0; __i < sizeof (__fd_set) / sizeof (__fd_mask); ++__i)	      \
       __arr->fds_bits[__i] = 0;						      \
   } while (0)
-# define __FD_SET(d, set)	((set)->fds_bits[__FDELT (d)] |= __FDMASK (d))
-# define __FD_CLR(d, set)	((set)->fds_bits[__FDELT (d)] &= ~__FDMASK (d))
-# define __FD_ISSET(d, set)	((set)->fds_bits[__FDELT (d)] & __FDMASK (d))
+#  define __FD_SET(d, set)    ((set)->fds_bits[__FDELT (d)] |= __FDMASK (d))
+#  define __FD_CLR(d, set)    ((set)->fds_bits[__FDELT (d)] &= ~__FDMASK (d))
+#  define __FD_ISSET(d, set)  ((set)->fds_bits[__FDELT (d)] & __FDMASK (d))
+# else
+  do {									      \
+    unsigned int __i;							      \
+    __fd_set *__arr = (set);						      \
+    for (__i = 0; __i < sizeof (__fd_set) / sizeof (__fd_mask); ++__i)	      \
+      __arr->__fds_bits[__i] = 0;					      \
+  } while (0)
+#  define __FD_SET(d, set)    ((set)->__fds_bits[__FDELT (d)] |= __FDMASK (d))
+#  define __FD_CLR(d, set)    ((set)->__fds_bits[__FDELT (d)] &= ~__FDMASK (d))
+#  define __FD_ISSET(d, set)  ((set)->__fds_bits[__FDELT (d)] & __FDMASK (d))
+# endif
 
 #endif	/* GNU CC */