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Update.
2004-05-26 Jakub Jelinek <jakub@redhat.com> * include/string.h (mempcpy, stpcpy): Add libc_hidden_builtin_proto. * string/bits/string2.h (memset): Disable macro for GCC 3.0+. (__mempcpy): Use __builtin_mempcpy for GCC 3.4+. (strchr): For GCC 3.2+, only use __rawmemchr if second argument is constant '\0' and first argument is not constant. (__stpcpy): Use __builtin_stpcpy for GCC 3.4+. (strncpy): Remove #ifdef _USE_STRING_ARCH_mempcpy variant. For GCC 3.2+ use __builtin_strncpy. (strncat): For GCC 3.2+ use __builtin_strncat. (strcmp): For GCC 3.2+ use __builtin_strcmp if both arguments are constant. (strcspn, strspn, strpbrk): For GCC 3.2+, use builtin function if both arguments are constant. 2004-05-26 Ulrich Drepper <drepper@redhat.com> * nss/nss_files/files-hosts.c: Fix condition for looking up IPv4 mapped addresses in gethostbyaddr.
This commit is contained in:
Ulrich Drepper
parent
1773d1ba5f
commit
4a691b0639
21
ChangeLog
21
ChangeLog
@ -1,3 +1,24 @@
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2004-05-26 Jakub Jelinek <jakub@redhat.com>
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* include/string.h (mempcpy, stpcpy): Add libc_hidden_builtin_proto.
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* string/bits/string2.h (memset): Disable macro for GCC 3.0+.
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(__mempcpy): Use __builtin_mempcpy for GCC 3.4+.
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(strchr): For GCC 3.2+, only use __rawmemchr if second argument is
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constant '\0' and first argument is not constant.
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(__stpcpy): Use __builtin_stpcpy for GCC 3.4+.
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(strncpy): Remove #ifdef _USE_STRING_ARCH_mempcpy variant.
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For GCC 3.2+ use __builtin_strncpy.
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(strncat): For GCC 3.2+ use __builtin_strncat.
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(strcmp): For GCC 3.2+ use __builtin_strcmp if both arguments are
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constant.
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(strcspn, strspn, strpbrk): For GCC 3.2+, use builtin function
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if both arguments are constant.
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2004-05-26 Ulrich Drepper <drepper@redhat.com>
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* nss/nss_files/files-hosts.c: Fix condition for looking up IPv4
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mapped addresses in gethostbyaddr.
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2004-05-25 Ulrich Drepper <drepper@redhat.com>
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* nss/digits_dots.c (__nss_hostname_digits_dots): Remove typep and
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@ -83,6 +83,7 @@ libc_hidden_proto (__strxfrm_l)
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libc_hidden_builtin_proto (memchr)
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libc_hidden_builtin_proto (memcpy)
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libc_hidden_builtin_proto (mempcpy)
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libc_hidden_builtin_proto (memcmp)
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libc_hidden_builtin_proto (memmove)
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libc_hidden_builtin_proto (memset)
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@ -95,6 +96,7 @@ libc_hidden_builtin_proto (strlen)
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libc_hidden_builtin_proto (strncmp)
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libc_hidden_builtin_proto (strncpy)
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libc_hidden_builtin_proto (strpbrk)
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libc_hidden_builtin_proto (stpcpy)
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libc_hidden_builtin_proto (strrchr)
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libc_hidden_builtin_proto (strspn)
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libc_hidden_builtin_proto (strstr)
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@ -1,5 +1,5 @@
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/* Hosts file parser in nss_files module.
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Copyright (C) 1996-2001, 2003 Free Software Foundation, Inc.
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Copyright (C) 1996-2001, 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -278,6 +278,11 @@ HOST_DB_LOOKUP (hostbyname2, ,,
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LOOKUP_NAME_CASE (h_name, h_aliases)
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}, const char *name, int af)
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#undef EXTRA_ARGS_VALUE
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/* We only need to consider IPv4 mapped addresses if the input to the
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gethostbyaddr() function is an IPv6 address. */
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#define EXTRA_ARGS_VALUE \
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, af, (len == IN6ADDRSZ ? AI_V4MAPPED : 0)
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DB_LOOKUP (hostbyaddr, ,,
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{
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if (result->h_length == (int) len
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@ -30,7 +30,7 @@
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means the code size increases a lot. Instead the definitions here
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optimize some functions in a way which do not dramatically
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increase the code size and which do not use assembler. The main
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trick is to use GNU CC's `__builtin_constant_p' function.
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trick is to use GCC's `__builtin_constant_p' function.
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Every function XXX which has a defined version in
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<bits/string.h> must be accompanied by a symbol _HAVE_STRING_ARCH_XXX
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@ -94,7 +94,7 @@ __STRING2_COPY_TYPE (8);
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((size_t)(const void *)((__x) + 1) - (size_t)(const void *)(__x) == 1)
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/* Set N bytes of S to C. */
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#ifndef _HAVE_STRING_ARCH_memset
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#if !defined _HAVE_STRING_ARCH_memset && ! __GNUC_PREREQ (3, 0)
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# if _STRING_ARCH_unaligned
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# define memset(s, c, n) \
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(__extension__ (__builtin_constant_p (n) && (n) <= 16 \
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@ -178,12 +178,10 @@ __STRING2_COPY_TYPE (8);
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\
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__s; })
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# else
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# if ! __GNUC_PREREQ (3, 0)
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# define memset(s, c, n) \
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# define memset(s, c, n) \
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(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
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? ({ void *__s = (s); __bzero (__s, n); __s; }) \
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: memset (s, c, n)))
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# endif
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# endif
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/* GCC optimizes memset(s, 0, n) but not bzero(s, n).
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@ -200,7 +198,9 @@ __STRING2_COPY_TYPE (8);
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#ifdef __USE_GNU
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# if !defined _HAVE_STRING_ARCH_mempcpy || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_mempcpy
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# if __GNUC_PREREQ (3, 0)
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# if __GNUC_PREREQ (3, 4)
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# define __mempcpy(dest, src, n) __builtin_mempcpy (dest, src, n)
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# elif __GNUC_PREREQ (3, 0)
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# define __mempcpy(dest, src, n) \
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(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
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&& __string2_1bptr_p (src) && n <= 8 \
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@ -387,10 +387,18 @@ __mempcpy_small (void *__dest, char __src1,
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/* Return pointer to C in S. */
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#ifndef _HAVE_STRING_ARCH_strchr
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extern void *__rawmemchr (const void *__s, int __c);
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# define strchr(s, c) \
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# if __GNUC_PREREQ (3, 2)
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# define strchr(s, c) \
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(__extension__ (__builtin_constant_p (c) && !__builtin_constant_p (s) \
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&& (c) == '\0' \
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? (char *) __rawmemchr (s, c) \
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: __builtin_strchr (s, c)))
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# else
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# define strchr(s, c) \
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(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
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? (char *) __rawmemchr (s, c) \
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: strchr (s, c)))
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# endif
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#endif
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@ -560,7 +568,9 @@ __strcpy_small (char *__dest,
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#ifdef __USE_GNU
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# if !defined _HAVE_STRING_ARCH_stpcpy || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_stpcpy
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# if __GNUC_PREREQ (3, 0)
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# if __GNUC_PREREQ (3, 4)
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# define __stpcpy(dest, src) __builtin_stpcpy (dest, src)
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# elif __GNUC_PREREQ (3, 0)
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# define __stpcpy(dest, src) \
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(__extension__ (__builtin_constant_p (src) \
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? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
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@ -742,16 +752,8 @@ __stpcpy_small (char *__dest,
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/* Copy no more than N characters of SRC to DEST. */
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#ifndef _HAVE_STRING_ARCH_strncpy
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# if defined _USE_STRING_ARCH_memset && defined _USE_STRING_ARCH_mempcpy
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# define strncpy(dest, src, n) \
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(__extension__ ({ char *__dest = (dest); \
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__builtin_constant_p (src) && __builtin_constant_p (n) \
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? (strlen (src) + 1 >= ((size_t) (n)) \
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? (char *) memcpy (__dest, src, n) \
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: (memset (__mempcpy (__dest, src, strlen (src)), \
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'\0', n - strlen (src)), \
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__dest)) \
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: strncpy (__dest, src, n); }))
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# if __GNUC_PREREQ (3, 2)
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# define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)
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# else
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# define strncpy(dest, src, n) \
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(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
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@ -774,6 +776,8 @@ __stpcpy_small (char *__dest,
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: (*((char *) __mempcpy (strchr (__dest, '\0'), \
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src, n)) = '\0', __dest)) \
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: strncat (dest, src, n); }))
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# elif __GNUC_PREREQ (3, 2)
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# define strncat(dest, src, n) __builtin_strncat (dest, src, n)
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# else
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# define strncat(dest, src, n) \
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(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
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@ -787,7 +791,28 @@ __stpcpy_small (char *__dest,
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/* Compare characters of S1 and S2. */
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#ifndef _HAVE_STRING_ARCH_strcmp
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# define strcmp(s1, s2) \
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# if __GNUC_PREREQ (3, 2)
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# define strcmp(s1, s2) \
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__extension__ \
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({ size_t __s1_len, __s2_len; \
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(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
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&& (__s1_len = strlen (s1), __s2_len = strlen (s2), \
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(!__string2_1bptr_p (s1) || __s1_len >= 4) \
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&& (!__string2_1bptr_p (s2) || __s2_len >= 4)) \
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? __builtin_strcmp (s1, s2) \
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: (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
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&& (__s1_len = strlen (s1), __s1_len < 4) \
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? (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
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? __builtin_strcmp (s1, s2) \
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: __strcmp_cg (s1, s2, __s1_len)) \
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: (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
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&& (__s2_len = strlen (s2), __s2_len < 4) \
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? (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
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? __builtin_strcmp (s1, s2) \
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: __strcmp_gc (s1, s2, __s2_len)) \
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: __builtin_strcmp (s1, s2)))); })
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# else
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# define strcmp(s1, s2) \
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__extension__ \
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({ size_t __s1_len, __s2_len; \
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(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
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@ -807,6 +832,7 @@ __stpcpy_small (char *__dest,
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? __strcmp_cc (s1, s2, __s2_len) \
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: __strcmp_gc (s1, s2, __s2_len)) \
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: strcmp (s1, s2)))); })
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# endif
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# define __strcmp_cc(s1, s2, l) \
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(__extension__ ({ register int __result = \
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@ -900,7 +926,25 @@ __stpcpy_small (char *__dest,
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consists entirely of characters not in REJECT. */
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#if !defined _HAVE_STRING_ARCH_strcspn || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_strcspn
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# define strcspn(s, reject) \
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# if __GNUC_PREREQ (3, 2)
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# define strcspn(s, reject) \
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__extension__ \
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({ char __r0, __r1, __r2; \
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(__builtin_constant_p (reject) && __string2_1bptr_p (reject) \
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? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
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? __builtin_strcspn (s, reject) \
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: ((__r0 = ((__const char *) (reject))[0], __r0 == '\0') \
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? strlen (s) \
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: ((__r1 = ((__const char *) (reject))[1], __r1 == '\0') \
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? __strcspn_c1 (s, __r0) \
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: ((__r2 = ((__const char *) (reject))[2], __r2 == '\0') \
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? __strcspn_c2 (s, __r0, __r1) \
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: (((__const char *) (reject))[3] == '\0' \
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? __strcspn_c3 (s, __r0, __r1, __r2) \
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: __builtin_strcspn (s, reject)))))) \
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: __builtin_strcspn (s, reject)); })
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# else
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# define strcspn(s, reject) \
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__extension__ \
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({ char __r0, __r1, __r2; \
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(__builtin_constant_p (reject) && __string2_1bptr_p (reject) \
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@ -913,7 +957,8 @@ __stpcpy_small (char *__dest,
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: (((__const char *) (reject))[3] == '\0' \
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? __strcspn_c3 (s, __r0, __r1, __r2) \
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: strcspn (s, reject))))) \
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: strcspn (s, reject)); })
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: strcspn (s, reject)); })
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# endif
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# endif
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__STRING_INLINE size_t __strcspn_c1 (__const char *__s, int __reject);
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@ -957,7 +1002,25 @@ __strcspn_c3 (__const char *__s, int __reject1, int __reject2,
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consists entirely of characters in ACCEPT. */
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#if !defined _HAVE_STRING_ARCH_strspn || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_strspn
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# define strspn(s, accept) \
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# if __GNUC_PREREQ (3, 2)
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# define strspn(s, accept) \
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__extension__ \
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({ char __a0, __a1, __a2; \
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(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
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? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
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? __builtin_strspn (s, accept) \
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: ((__a0 = ((__const char *) (accept))[0], __a0 == '\0') \
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? ((void) (s), 0) \
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: ((__a1 = ((__const char *) (accept))[1], __a1 == '\0') \
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? __strspn_c1 (s, __a0) \
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: ((__a2 = ((__const char *) (accept))[2], __a2 == '\0') \
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? __strspn_c2 (s, __a0, __a1) \
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: (((__const char *) (accept))[3] == '\0' \
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? __strspn_c3 (s, __a0, __a1, __a2) \
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: __builtin_strspn (s, accept)))))) \
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: __builtin_strspn (s, accept)); })
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# else
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# define strspn(s, accept) \
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__extension__ \
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({ char __a0, __a1, __a2; \
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(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
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@ -971,6 +1034,7 @@ __strcspn_c3 (__const char *__s, int __reject1, int __reject2,
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? __strspn_c3 (s, __a0, __a1, __a2) \
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: strspn (s, accept))))) \
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: strspn (s, accept)); })
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# endif
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# endif
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__STRING_INLINE size_t __strspn_c1 (__const char *__s, int __accept);
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@ -1014,7 +1078,25 @@ __strspn_c3 (__const char *__s, int __accept1, int __accept2, int __accept3)
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/* Find the first occurrence in S of any character in ACCEPT. */
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#if !defined _HAVE_STRING_ARCH_strpbrk || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_strpbrk
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# define strpbrk(s, accept) \
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# if __GNUC_PREREQ (3, 2)
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# define strpbrk(s, accept) \
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__extension__ \
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({ char __a0, __a1, __a2; \
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(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
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? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
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? __builtin_strpbrk (s, accept) \
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: ((__a0 = ((__const char *) (accept))[0], __a0 == '\0') \
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? ((void) (s), (char *) NULL) \
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: ((__a1 = ((__const char *) (accept))[1], __a1 == '\0') \
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? __builtin_strchr (s, __a0) \
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: ((__a2 = ((__const char *) (accept))[2], __a2 == '\0') \
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? __strpbrk_c2 (s, __a0, __a1) \
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: (((__const char *) (accept))[3] == '\0' \
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? __strpbrk_c3 (s, __a0, __a1, __a2) \
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: __builtin_strpbrk (s, accept)))))) \
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: __builtin_strpbrk (s, accept)); })
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# else
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# define strpbrk(s, accept) \
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__extension__ \
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({ char __a0, __a1, __a2; \
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(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
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@ -1028,6 +1110,7 @@ __strspn_c3 (__const char *__s, int __accept1, int __accept2, int __accept3)
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? __strpbrk_c3 (s, __a0, __a1, __a2) \
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: strpbrk (s, accept))))) \
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: strpbrk (s, accept)); })
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# endif
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# endif
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__STRING_INLINE char *__strpbrk_c2 (__const char *__s, int __accept1,
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