diff options
Diffstat (limited to 'string/bits')
| -rw-r--r-- | string/bits/string2.h | 68 |
1 files changed, 46 insertions, 22 deletions
diff --git a/string/bits/string2.h b/string/bits/string2.h index e8ac063e03..fa847771fe 100644 --- a/string/bits/string2.h +++ b/string/bits/string2.h @@ -1,5 +1,5 @@ /* Machine-independant string function optimizations. - Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + Copyright (C) 1997,1998,1999,2000,2001,2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -198,26 +198,35 @@ __STRING2_COPY_TYPE (8); #ifdef __USE_GNU # if !defined _HAVE_STRING_ARCH_mempcpy || defined _FORCE_INLINES # ifndef _HAVE_STRING_ARCH_mempcpy -# define __mempcpy(dest, src, n) \ +# if __GNUC_PREREQ (3, 0) +# define __mempcpy(dest, src, n) \ + (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \ + && __string2_1bptr_p (src) && n <= 8 \ + ? __builtin_memcpy (dest, src, n) + n \ + : __mempcpy (dest, src, n))) +# else +# define __mempcpy(dest, src, n) \ (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \ && __string2_1bptr_p (src) && n <= 8 \ ? __mempcpy_small (dest, __mempcpy_args (src), n) \ : __mempcpy (dest, src, n))) +# endif /* In glibc we use this function frequently but for namespace reasons we have to use the name `__mempcpy'. */ # define mempcpy(dest, src, n) __mempcpy (dest, src, n) # endif -# if _STRING_ARCH_unaligned -# ifndef _FORCE_INLINES -# define __mempcpy_args(src) \ +# if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES +# if _STRING_ARCH_unaligned +# ifndef _FORCE_INLINES +# define __mempcpy_args(src) \ ((__const char *) (src))[0], ((__const char *) (src))[2], \ ((__const char *) (src))[4], ((__const char *) (src))[6], \ __extension__ __STRING2_SMALL_GET16 (src, 0), \ __extension__ __STRING2_SMALL_GET16 (src, 4), \ __extension__ __STRING2_SMALL_GET32 (src, 0), \ __extension__ __STRING2_SMALL_GET32 (src, 4) -# endif +# endif __STRING_INLINE void *__mempcpy_small (void *, char, char, char, char, __uint16_t, __uint16_t, __uint32_t, __uint32_t, size_t); @@ -283,9 +292,9 @@ __mempcpy_small (void *__dest1, } return (void *) __u; } -# else -# ifndef _FORCE_INLINES -# define __mempcpy_args(src) \ +# else +# ifndef _FORCE_INLINES +# define __mempcpy_args(src) \ ((__const char *) (src))[0], \ __extension__ ((__STRING2_COPY_ARR2) \ { { ((__const char *) (src))[0], ((__const char *) (src))[1] } }), \ @@ -313,7 +322,7 @@ __mempcpy_small (void *__dest1, ((__const char *) (src))[2], ((__const char *) (src))[3], \ ((__const char *) (src))[4], ((__const char *) (src))[5], \ ((__const char *) (src))[6], ((__const char *) (src))[7] } }) -# endif +# endif __STRING_INLINE void *__mempcpy_small (void *, char, __STRING2_COPY_ARR2, __STRING2_COPY_ARR3, __STRING2_COPY_ARR4, @@ -367,6 +376,7 @@ __mempcpy_small (void *__dest, char __src1, } return __extension__ ((void *) __u + __srclen); } +# endif # endif # endif #endif @@ -383,8 +393,9 @@ extern void *__rawmemchr (const void *__s, int __c); /* Copy SRC to DEST. */ -#if !defined _HAVE_STRING_ARCH_strcpy || defined _FORCE_INLINES -# ifndef _HAVE_STRING_ARCH_strcpy +#if (!defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0)) \ + || defined _FORCE_INLINES +# if !defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0) # define strcpy(dest, src) \ (__extension__ (__builtin_constant_p (src) \ ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \ @@ -547,26 +558,38 @@ __strcpy_small (char *__dest, #ifdef __USE_GNU # if !defined _HAVE_STRING_ARCH_stpcpy || defined _FORCE_INLINES # ifndef _HAVE_STRING_ARCH_stpcpy -# define __stpcpy(dest, src) \ +# if __GNUC_PREREQ (3, 0) +# define __stpcpy(dest, src) \ + (__extension__ (__builtin_constant_p (src) \ + ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \ + ? __builtin_strcpy (dest, src) + strlen (src) \ + : ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \ + - 1)) \ + : __stpcpy (dest, src))) +# else +# define __stpcpy(dest, src) \ (__extension__ (__builtin_constant_p (src) \ ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \ ? __stpcpy_small (dest, __stpcpy_args (src), \ strlen (src) + 1) \ - : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\ + : ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \ + - 1)) \ : __stpcpy (dest, src))) +# endif /* In glibc we use this function frequently but for namespace reasons we have to use the name `__stpcpy'. */ # define stpcpy(dest, src) __stpcpy (dest, src) # endif -# if _STRING_ARCH_unaligned -# ifndef _FORCE_INLINES -# define __stpcpy_args(src) \ +# if !__GNUC_PREREQ (3, 0) || _FORCE_INLINES +# if _STRING_ARCH_unaligned +# ifndef _FORCE_INLINES +# define __stpcpy_args(src) \ __extension__ __STRING2_SMALL_GET16 (src, 0), \ __extension__ __STRING2_SMALL_GET16 (src, 4), \ __extension__ __STRING2_SMALL_GET32 (src, 0), \ __extension__ __STRING2_SMALL_GET32 (src, 4) -# endif +# endif __STRING_INLINE char *__stpcpy_small (char *, __uint16_t, __uint16_t, __uint32_t, __uint32_t, size_t); __STRING_INLINE char * @@ -626,9 +649,9 @@ __stpcpy_small (char *__dest, } return &__u->__c; } -# else -# ifndef _FORCE_INLINES -# define __stpcpy_args(src) \ +# else +# ifndef _FORCE_INLINES +# define __stpcpy_args(src) \ __extension__ ((__STRING2_COPY_ARR2) \ { { ((__const char *) (src))[0], '\0' } }), \ __extension__ ((__STRING2_COPY_ARR3) \ @@ -655,7 +678,7 @@ __stpcpy_small (char *__dest, ((__const char *) (src))[2], ((__const char *) (src))[3], \ ((__const char *) (src))[4], ((__const char *) (src))[5], \ ((__const char *) (src))[6], '\0' } }) -# endif +# endif __STRING_INLINE char *__stpcpy_small (char *, __STRING2_COPY_ARR2, __STRING2_COPY_ARR3, __STRING2_COPY_ARR4, @@ -709,6 +732,7 @@ __stpcpy_small (char *__dest, } return __dest + __srclen - 1; } +# endif # endif # endif #endif |