Update. cvs/libc-ud-970915

1997-09-16 02:14  Ulrich Drepper  <drepper@cygnus.com>

	Implementation of Hesiod NSS module by Mark Kettenis.
	* hesiod/Makefile: New file.
	* hesiod/hesiod.c: New file.
	* hesiod/hesiod.h: New file.
	* hesiod/hesiod_p.h: New file.
	* hesiod/libnss_hesiod.map: New file.
	* hesiod/nss_hesiod/hesiod-grp.c: New file.
	* hesiod/nss_hesiod/hesiod-pwd.c: New file.
	* hesiod/nss_hesiod/hesiod-service.c: New file.
	* sysdeps/unix/inet/Subdirs: Add hesiod.

	* shlib-versions: Add version number for libnss_hesiod.

	* libio/iolibio.h: Remove definition of _IO_* macros.
	* libio/fileops.c: Define close, fstat, lseek, read, and write as
	macros to use __ protected versions.  Use those functions instead
	of _IO_* functions.
	* libio/iopopen.c: Define _IO_close to close.

	* manual/math.texi: Explain the use of the optimizing inline
	functions.
	Describe rand_r function and tell about SysV RNGs in introduction.

	* resolv/res_send.c (res_send): Use socklen_t type for `fromlen'
	variable.

	* string/Makefile (tests): Add noinl-tester.
	* string/noinl-tester.c: New file.
	* string/tester.c: Add more stpcpy tests for constant arguments for
	all short lengths.

	* string/string.h: Always declare __bzero.
	Describe __NO_STRING_INLINES.
	Always include <bits/string.h>.
	* string/bits/string2.h: Add warning about direct use.
	Change __strcpy_small and __stpcpy_small implementation to use
	macros and provide alternative for platforms which cannot do
	unaligned stores.
	* sysdeps/i386/bits/string.h: Don't define anything is
	__NO_STRING_INLINES is defined.
	* sysdeps/i386/i486/bits/string.h: Change __strcpy_small and
	__stpcpy_small implementation to use macros and provide
	alternative for platforms which cannot do unaligned stores.
	* sysdeps/alpha/bzero.S: Define bzero as weak alias of __bzero.
	* sysdeps/generic/bzero.c: Likewise.
	* sysdeps/i386/bzero.c: Likewise.
	* sysdeps/i386/i586/bzero.S: Likewise.
	* sysdeps/vax/bzero.s: Likewise.

	* sysdeps/generic/bits/select.h: Don't use ugly casts to access array.
	* sysdeps/i386/bits/select.h: Likewise.

	* sysdeps/i386/fpu/bits/mathinline.c (__finite): Relax register
	constraints a bit.
	Don't define and test for _BITS_MATHINLINE_H.  Emit warning if used
	directly and not through math.h.

	* sysdeps/i386/i486/atomicity.h: Change return type of compare_and_swap
	to char to get better code.  Fix typo.
	* sysdeps/stub/atomicity.h: Fix typo.

1997-09-14  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/stpcpy.c: #undef stpcpy and __stpcpy.

1997-09-14  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* string/bits/string2.h: Add prototypes to avoid warning.

1997-09-14  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* string/bits/string2.h (strsep): Fix handling of empty REJECT.
	(__strsep_1c): Handle NULL and empty string.
	(__strsep_g): Likewise.

1997-09-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* catgets/Makefile (extra-objs): Set this instead of generated.

	* md5-crypt/Makefile (extra-objs): Add all object file variants of
	onlymd5-entry.

1997-09-12  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/sysd-stdio.c (__stdio_read): Fix typo in last
	change.

1997-09-12  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/m68020/atomicity.h: New file.

1997-09-15 05:11  Ulrich Drepper  <drepper@cygnus.com>

	* posix/Makefile (distribute): Add globtest.c and globtest.sh.
	Compile and run globtest if not cross-compiling.
	* posix/globtest.c: New file.
	* posix/globtest.sh: New file.
	* posix/glob.c: Pretty print preprocessor stuff.
	(glob_in_dir): If PATTERN is not really a pattern still check
	whether it is a real file in the current directory and return
	error if not.
	Reported by Eugene Mamchits <eugin@ips.ras.ru>.

	* libio/fileops.c (_IO_file_sync): Acquire lock before doing the work.
	* libio/ioseekoff.c (_IO_seekoff): Likewise.
	* libio/ioseekpos.c (_IO_seekpos): Likewise.

1997-09-13 18:06  Ulrich Drepper  <drepper@cygnus.com>

	* configure.in: Prevent configuration for unsupported platforms.

1997-09-13 04:07  Ulrich Drepper  <drepper@cygnus.com>

	* elf/rtld.c (dl_main): Make sure we always have a file argument by
	testing for < 2 arguments after recognizing the options.

1997-09-12 11:47  Fila Kolodny  <fila@ibi.com>

	* string/bits/string2.h (__strsep_1c): Cast out const from __retval.
	(__strsep_g): Likewise.

1 files changed, 118 insertions, 42 deletions

diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h
index 770f5c1e15..5e4abbc3e5 100644
--- a/sysdeps/i386/i486/bits/string.h
+++ b/sysdeps/i386/i486/bits/string.h
@@ -18,11 +18,17 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _STRING_H
-#error "Never use <bits/string.h> directly; include <string.h> instead."
+# error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* We only provide optimizations for the GNU CC.  */
-#if defined __GNUC__ && __GNUC__ >= 2
+/* The ix86 processors can access unaligned multi-byte variables.  */
+#define _STRING_ARCH_unaligned	1
+
+
+/* We only provide optimizations if the user selects them and if
+   GNU CC is used.  */
+#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
+    && defined __GNUC__ && __GNUC__ >= 2
 
 #ifdef __cplusplus
 # define __STRING_INLINE inline
@@ -30,6 +36,13 @@
 # define __STRING_INLINE extern __inline
 #endif
 
+/* The macros are used in some of the optimized implementations below.  */
+#define __STRING_SMALL_GET16(src, idx) \
+  (((src)[idx + 1] << 8) | (src)[idx])
+#define __STRING_SMALL_GET32(src, idx) \
+  ((((src)[idx + 3] << 8 | (src)[idx + 2]) << 8				      \
+    | (src)[idx + 1]) << 8 | (src)[idx])
+
 
 /* Copy N bytes of SRC to DEST.  */
 #define _HAVE_STRING_ARCH_memcpy 1
@@ -355,9 +368,59 @@ __strlen_g (__const char *__str)
 #define _HAVE_STRING_ARCH_strcpy 1
 #define strcpy(dest, src) \
   (__extension__ (__builtin_constant_p (src)				      \
-		  ? (char *) memcpy (dest, src, strlen (src) + 1)	      \
+		  ? (sizeof (src[0]) == 1 && strlen (src) + 1 <= 8	      \
+		     ? __strcpy_small (dest, src, strlen (src) + 1)	      \
+		     : (char *) memcpy (dest, src, strlen (src) + 1))	      \
 		  : __strcpy_g (dest, src)))
 
+# define __strcpy_small(dest, src, srclen) \
+  (__extension__ ({ char *__retval = (dest);				      \
+		    char *__cp = __retval;				      \
+		    switch (srclen)					      \
+		      {							      \
+		      case 1:						      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 2:						      \
+			*((__uint16_t *) __cp) =			      \
+			  __STRING_SMALL_GET16 (src, 0);		      \
+			break;						      \
+		      case 3:						      \
+			*((__uint16_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET16 (src, 0);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 4:						      \
+			*((__uint32_t *) __cp) =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			break;						      \
+		      case 5:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 6:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint16_t *) __cp) =			      \
+			  __STRING_SMALL_GET16 (src, 4);		      \
+			break;						      \
+		      case 7:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint16_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET16 (src, 4);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 8:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint32_t *) __cp) =			      \
+			  __STRING_SMALL_GET32 (src, 4);		      \
+			break;						      \
+		      }							      \
+		    __retval; }))
+
 __STRING_INLINE char *
 __strcpy_g (char *__dest, __const char *__src)
 {
@@ -398,43 +461,56 @@ __strcpy_g (char *__dest, __const char *__src)
 /* In glibc itself we use this symbol for namespace reasons.  */
 # define stpcpy(dest, src) __stpcpy (dest, src)
 
-__STRING_INLINE char *
-__stpcpy_small (char *__dest, __const char __src[], size_t __srclen)
-{
-  register char *__tmp = __dest;
-  switch (__srclen)
-    {
-    case 7:
-      *((unsigned short int *) __tmp)++ = *((unsigned short int *) __src)++;
-    case 5:
-      *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
-      *((unsigned char *) __tmp) = '\0';
-      return __tmp;
-
-    case 8:
-      *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
-    case 4:
-      *((unsigned int *) __tmp) = *((unsigned int *) __src);
-      return __tmp + 3;
-
-    case 6:
-      *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
-    case 2:
-      *((unsigned short int *) __tmp) = *((unsigned short int *) __src);
-      return __tmp + 1;
-
-    case 3:
-      *((unsigned short int *) __tmp)++ = *((unsigned short int *) __src)++;
-    case 1:
-      *((unsigned char *) __tmp) = '\0';
-      return __tmp;
-
-    default:
-      break;
-    }
-  /* This should never happen.  */
-  return NULL;
-}
+# define __stpcpy_small(dest, src, srclen) \
+  (__extension__ ({ char *__cp = (dest);				      \
+		    switch (srclen)					      \
+		      {							      \
+		      case 1:						      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 2:						      \
+			*((__uint16_t *) __cp) =			      \
+			  __STRING_SMALL_GET16 (src, 0);		      \
+			++cp;						      \
+			break;						      \
+		      case 3:						      \
+			*((__uint16_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET16 (src, 0);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 4:						      \
+			*((__uint32_t *) __cp) =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			cp += 3;					      \
+			break;						      \
+		      case 5:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 6:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint16_t *) __cp) =			      \
+			  __STRING_SMALL_GET16 (src, 4);		      \
+			++cp;						      \
+			break;						      \
+		      case 7:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint16_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET16 (src, 4);		      \
+			*((unsigned char *) __cp) = '\0';		      \
+			break;						      \
+		      case 8:						      \
+			*((__uint32_t *) __cp)++ =			      \
+			  __STRING_SMALL_GET32 (src, 0);		      \
+			*((__uint32_t *) __cp) =			      \
+			  __STRING_SMALL_GET32 (src, 4);		      \
+			cp += 3;					      \
+			break;						      \
+		      }							      \
+		    __cp; }))
 
 __STRING_INLINE char *
 __mempcpy_by4 (char *__dest, __const char *__src, size_t __srclen)
@@ -1458,4 +1534,4 @@ __strstr_g (__const char *__haystack, __const char *__needle)
 
 #undef __STRING_INLINE
 
-#endif	/* GNU CC */
+#endif	/* use string inlines && GNU CC */