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-rw-r--r--string/bits/string2.h198
1 files changed, 124 insertions, 74 deletions
diff --git a/string/bits/string2.h b/string/bits/string2.h
index b0e9cdcb8a..51255aaf4c 100644
--- a/string/bits/string2.h
+++ b/string/bits/string2.h
@@ -22,7 +22,7 @@
# error "Never use <bits/string2.h> directly; include <string.h> instead."
#endif
-#ifdef __NO_STRING_INLINES
+#ifndef __NO_STRING_INLINES
/* Unlike the definitions in the header <bits/string.h> the
definitions contained here are not optimizing down to assembler
@@ -100,102 +100,101 @@ __STRING2_COPY_TYPE (8);
# if _STRING_ARCH_unaligned
# define __strcpy_small(dest, src, srclen) \
- (__extension__ ({ char *__retval = (dest); \
- char *__cp = __retval; \
+ (__extension__ ({ unsigned char *__dest = (unsigned char *) (dest); \
switch (srclen) \
{ \
case 1: \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 2: \
- *((__uint16_t *) __cp) = \
+ *((__uint16_t *) __dest) = \
__STRING2_SMALL_GET16 (src, 0); \
break; \
case 3: \
- *((__uint16_t *) __cp)++ = \
+ *((__uint16_t *) __dest) = \
__STRING2_SMALL_GET16 (src, 0); \
- *((unsigned char *) __cp) = '\0'; \
+ *(__dest + 2) = '\0'; \
break; \
case 4: \
- *((__uint32_t *) __cp) = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
break; \
case 5: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((unsigned char *) __cp) = '\0'; \
+ *(__dest + 4) = '\0'; \
break; \
case 6: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint16_t *) __cp) = \
+ *((__uint16_t *) (__dest + 4)) = \
__STRING2_SMALL_GET16 (src, 4); \
break; \
case 7: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint16_t *) __cp)++ = \
+ *((__uint16_t *) (__dest + 4)) = \
__STRING2_SMALL_GET16 (src, 4); \
- *((unsigned char *) __cp) = '\0'; \
+ *(__dest + 6) = '\0'; \
break; \
case 8: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint32_t *) __cp) = \
+ *((__uint32_t *) (__dest + 4)) = \
__STRING2_SMALL_GET32 (src, 4); \
break; \
} \
- __retval; }))
+ (char *) __dest; }))
# else
# define __strcpy_small(dest, src, srclen) \
- (__extension__ ({ char *__cp = (dest); \
+ (__extension__ ({ unsigned char *__dest = (unsigned char *) (dest); \
switch (srclen) \
{ \
case 1: \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 2: \
- *((__STRING2_COPY_ARR2 *) __cp) = \
+ *((__STRING2_COPY_ARR2 *) __dest) = \
((__STRING2_COPY_ARR2) { { (src)[0], '\0' } }); \
break; \
case 3: \
- *((__STRING2_COPY_ARR3 *) __cp) = \
+ *((__STRING2_COPY_ARR3 *) __dest) = \
((__STRING2_COPY_ARR3) { { (src)[0], (src)[1], \
'\0' } }); \
break; \
case 4: \
- *((__STRING2_COPY_ARR4 *) __cp) = \
+ *((__STRING2_COPY_ARR4 *) __dest) = \
((__STRING2_COPY_ARR4) { { (src)[0], (src)[1], \
(src)[2], '\0' } }); \
break; \
case 5: \
- *((__STRING2_COPY_ARR5 *) __cp) = \
+ *((__STRING2_COPY_ARR5 *) __dest) = \
((__STRING2_COPY_ARR5) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
'\0' } }); \
break; \
case 6: \
- *((__STRING2_COPY_ARR6 *) __cp) = \
+ *((__STRING2_COPY_ARR6 *) __dest) = \
((__STRING2_COPY_ARR6) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], '\0' } }); \
break; \
case 7: \
- *((__STRING2_COPY_ARR7 *) __cp) = \
+ *((__STRING2_COPY_ARR7 *) __dest) = \
((__STRING2_COPY_ARR7) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], (src)[5], \
'\0' } }); \
break; \
case 8: \
- *((__STRING2_COPY_ARR8 *) __cp) = \
+ *((__STRING2_COPY_ARR8 *) __dest) = \
((__STRING2_COPY_ARR8) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], (src)[5], \
(src)[6], '\0' } }); \
break; \
} \
- __cp; }))
+ (char *) __dest; }))
# endif
#endif
@@ -215,105 +214,106 @@ __STRING2_COPY_TYPE (8);
# if _STRING_ARCH_unaligned
# define __stpcpy_small(dest, src, srclen) \
- (__extension__ ({ char *__cp = (dest); \
+ (__extension__ ({ unsigned char *__dest = (unsigned char *) (dest); \
switch (srclen) \
{ \
case 1: \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 2: \
- *((__uint16_t *) __cp) = \
+ *((__uint16_t *) __dest) = \
__STRING2_SMALL_GET16 (src, 0); \
- ++__cp; \
+ ++__dest; \
break; \
case 3: \
- *((__uint16_t *) __cp)++ = \
+ *((__uint16_t *) __dest)++ = \
__STRING2_SMALL_GET16 (src, 0); \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 4: \
- *((__uint32_t *) __cp) = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- __cp += 3; \
+ __dest += 3; \
break; \
case 5: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest)++ = \
__STRING2_SMALL_GET32 (src, 0); \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 6: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint16_t *) __cp) = \
+ *((__uint16_t *) (__dest + 4)) = \
__STRING2_SMALL_GET16 (src, 4); \
- ++__cp; \
+ __dest += 5; \
break; \
case 7: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint16_t *) __cp)++ = \
+ *((__uint16_t *) (__dest + 4)) = \
__STRING2_SMALL_GET16 (src, 4); \
- *((unsigned char *) __cp) = '\0'; \
+ __dest += 6; \
+ *__dest = '\0'; \
break; \
case 8: \
- *((__uint32_t *) __cp)++ = \
+ *((__uint32_t *) __dest) = \
__STRING2_SMALL_GET32 (src, 0); \
- *((__uint32_t *) __cp) = \
+ *((__uint32_t *) (__dest + 4)) = \
__STRING2_SMALL_GET32 (src, 4); \
- __cp += 3; \
+ __dest += 7; \
break; \
} \
- __cp; }))
+ (char *) __dest; }))
# else
# define __stpcpy_small(dest, src, srclen) \
- (__extension__ ({ char *__cp = (dest); \
+ (__extension__ ({ unsigned char *__dest = (unsigned char *) (dest); \
switch (srclen) \
{ \
case 1: \
- *((unsigned char *) __cp) = '\0'; \
+ *__dest = '\0'; \
break; \
case 2: \
- *((__STRING2_COPY_ARR2 *) __cp) = \
+ *((__STRING2_COPY_ARR2 *) __dest) = \
((__STRING2_COPY_ARR2) { { (src)[0], '\0' } }); \
break; \
case 3: \
- *((__STRING2_COPY_ARR3 *) __cp) = \
+ *((__STRING2_COPY_ARR3 *) __dest) = \
((__STRING2_COPY_ARR3) { { (src)[0], (src)[1], \
'\0' } }); \
break; \
case 4: \
- *((__STRING2_COPY_ARR4 *) __cp) = \
+ *((__STRING2_COPY_ARR4 *) __dest) = \
((__STRING2_COPY_ARR4) { { (src)[0], (src)[1], \
(src)[2], '\0' } }); \
break; \
case 5: \
- *((__STRING2_COPY_ARR5 *) __cp) = \
+ *((__STRING2_COPY_ARR5 *) __dest) = \
((__STRING2_COPY_ARR5) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
'\0' } }); \
break; \
case 6: \
- *((__STRING2_COPY_ARR6 *) __cp) = \
+ *((__STRING2_COPY_ARR6 *) __dest) = \
((__STRING2_COPY_ARR6) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], '\0' } }); \
break; \
case 7: \
- *((__STRING2_COPY_ARR7 *) __cp) = \
+ *((__STRING2_COPY_ARR7 *) __dest) = \
((__STRING2_COPY_ARR7) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], (src)[5], \
'\0' } }); \
break; \
case 8: \
- *((__STRING2_COPY_ARR8 *) __cp) = \
+ *((__STRING2_COPY_ARR8 *) __dest) = \
((__STRING2_COPY_ARR8) { { (src)[0], (src)[1], \
(src)[2], (src)[3], \
(src)[4], (src)[5], \
(src)[6], '\0' } }); \
break; \
} \
- __cp + ((srclen) - 1); }))
+ (char *) (__dest + ((srclen) - 1)); }))
# endif
# endif
#endif
@@ -323,13 +323,14 @@ __STRING2_COPY_TYPE (8);
#ifndef _HAVE_STRING_ARCH_strncpy
# if defined _HAVE_STRING_ARCH_memset && defined _HAVE_STRING_ARCH_mempcpy
# define strncpy(dest, src, n) \
- (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
- ? (strlen (src) + 1 >= ((size_t) (n)) \
- ? (char *) memcpy (dest, src, n) \
- : (memset (__mempcpy (dest, src, strlen (src)), '\0', \
- n - strlen (src)), \
- (char *) dest)) \
- : strncpy (dest, src, n)))
+ (__extension__ ({ char *__dest = (dest); \
+ __builtin_constant_p (src) && __builtin_constant_p (n) \
+ ? (strlen (src) + 1 >= ((size_t) (n)) \
+ ? (char *) memcpy (__dest, src, n) \
+ : (memset (__mempcpy (__dest, src, strlen (src)), \
+ '\0', n - strlen (src)), \
+ __dest)) \
+ : strncpy (__dest, src, n); }))
# else
# define strncpy(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
@@ -345,11 +346,12 @@ __STRING2_COPY_TYPE (8);
#ifndef _HAVE_STRING_ARCH_strncat
# ifdef _HAVE_STRING_ARCH_strchr
# define strncat(dest, src, n) \
- (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
- ? (strlen (src) < ((size_t) (n)) \
- ? strcat (dest, src) \
- : (memcpy (strchr (dest, '\0'), src, n), (char *) dest)) \
- : strncat (dest, src, n)))
+ (__extension__ ({ char *__dest = (dest); \
+ __builtin_constant_p (src) && __builtin_constant_p (n) \
+ ? (strlen (src) < ((size_t) (n)) \
+ ? strcat (__dest, src) \
+ : (memcpy (strchr (__dest, '\0'), src, n), __dest)) \
+ : strncat (dest, src, n); }))
# else
# define strncat(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
@@ -361,6 +363,54 @@ __STRING2_COPY_TYPE (8);
#endif
+/* Compare characters of S1 and S2. */
+#ifndef _HAVE_STRING_ARCH_strcmp
+# define strcmp(s1, s2) \
+ (__extension__ (__builtin_constant_p (s1) && __builtin_constant_p (s2) \
+ && (sizeof (s1)[0] != 1 || strlen (s1) >= 4) \
+ && (sizeof (s2)[0] != 1 || strlen (s2) >= 4) \
+ ? memcmp (s1, s2, (strlen (s1) < strlen (s2) \
+ ? strlen (s1) : strlen (s2)) + 1) \
+ : (__builtin_constant_p (s1) && sizeof (s1)[0] == 1 \
+ && sizeof (s2)[0] == 1 && strlen (s1) < 4 \
+ ? __strcmp_cg (s1, s2, strlen (s1)) \
+ : (__builtin_constant_p (s2) && sizeof (s1)[0] == 1 \
+ && sizeof (s2)[0] == 1 && strlen (s2) < 4 \
+ ? __strcmp_gc (s1, s2, strlen (s2)) \
+ : strcmp (s1, s2)))))
+
+# define __strcmp_cg(s1, s2, l1) \
+ (__extension__ ({ __const unsigned char *__s2 = (unsigned char *) (s2); \
+ register int __result = (unsigned char) (s1)[0] - __s2[0];\
+ if (l1 > 0 && __result == 0) \
+ { \
+ __result = (unsigned char) (s1)[1] - __s2[1]; \
+ if (l1 > 1 && __result == 0) \
+ { \
+ __result = (unsigned char) (s1)[2] - __s2[2]; \
+ if (l1 > 2 && __result == 0) \
+ __result = (unsigned char) (s1)[3] - __s2[3]; \
+ } \
+ } \
+ __result; }))
+
+# define __strcmp_gc(s1, s2, l2) \
+ (__extension__ ({ __const unsigned char *__s1 = (unsigned char *) (s1); \
+ register int __result = __s1[0] - (unsigned char) (s2)[0];\
+ if (l2 > 0 && __result == 0) \
+ { \
+ __result = __s1[1] - (unsigned char) (s2)[1]; \
+ if (l2 > 1 && __result == 0) \
+ { \
+ __result = __s1[2] - (unsigned char) (s2)[2]; \
+ if (l2 > 2 && __result == 0) \
+ __result = __s1[3] - (unsigned char) (s2)[3]; \
+ } \
+ } \
+ __result; }))
+#endif
+
+
/* Compare N characters of S1 and S2. */
#ifndef _HAVE_STRING_ARCH_strncmp
# define strncmp(s1, s2, n) \
@@ -474,26 +524,26 @@ __STRING_INLINE char *__strsep_1c (char **__s, char __reject);
__STRING_INLINE char *
__strsep_1c (char **__s, char __reject)
{
- register __const char *__retval = *__s;
+ register char *__retval = *__s;
if (__retval == NULL || *__retval == '\0')
return NULL;
while (*__retval == __reject)
++__retval;
if ((*__s = strchr (__retval, __reject)) != NULL)
*(*__s)++ = '\0';
- return (char *) __retval;
+ return __retval;
}
__STRING_INLINE char *__strsep_g (char **__s, __const char *__reject);
__STRING_INLINE char *
__strsep_g (char **__s, __const char *__reject)
{
- register __const char *__retval = *__s;
+ register char *__retval = *__s;
if (__retval == NULL || *__retval == '\0')
return NULL;
if ((*__s = strpbrk (__retval, __reject)) != NULL)
*(*__s)++ = '\0';
- return (char *) __retval;
+ return __retval;
}
# endif
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 05:24:36 +0000