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Diffstat (limited to 'sysdeps/i386/i486/bits/string.h')
-rw-r--r--sysdeps/i386/i486/bits/string.h234
1 files changed, 70 insertions, 164 deletions
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h
index 28ca38315e..ef808d2e7d 100644
--- a/sysdeps/i386/i486/bits/string.h
+++ b/sysdeps/i386/i486/bits/string.h
@@ -368,7 +368,7 @@ __strlen_g (__const char *__str)
#define _HAVE_STRING_ARCH_strcpy 1
#define strcpy(dest, src) \
(__extension__ (__builtin_constant_p (src) \
- ? (sizeof (src[0]) == 1 && strlen (src) + 1 <= 8 \
+ ? (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)))
@@ -800,18 +800,40 @@ __strncat_g (char *__dest, __const char __src[], size_t __n)
#define _HAVE_STRING_ARCH_strcmp 1
#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) \
+ && (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)) \
+ : (__builtin_constant_p (s1) && sizeof ((s1)[0]) == 1 \
+ && sizeof ((s2)[0]) == 1 && strlen (s1) < 4 \
+ ? (__builtin_constant_p (s2) && sizeof ((s2)[0]) == 1 \
+ ? __strcmp_cc (s1, s2, strlen (s1)) \
+ : __strcmp_cg (s1, s2, strlen (s1))) \
+ : (__builtin_constant_p (s2) && sizeof ((s1)[0]) == 1 \
+ && sizeof ((s2)[0]) == 1 && strlen (s2) < 4 \
+ ? (__builtin_constant_p (s1) \
+ ? __strcmp_cc (s1, s2, strlen (s2)) \
+ : __strcmp_gc (s1, s2, strlen (s2))) \
: __strcmp_gg (s1, s2)))))
+#define __strcmp_cc(s1, s2, l) \
+ (__extension__ ({ register int __result = ((unsigned char) (s1)[0] \
+ - (unsigned char) (s2)[0]); \
+ if (l > 0 && __result == 0) \
+ { \
+ __result = ((unsigned char) (s1)[1] \
+ - (unsigned char) (s2)[1]); \
+ if (l > 1 && __result == 0) \
+ { \
+ __result = ((unsigned char) (s1)[2] \
+ - (unsigned char) (s2)[2]); \
+ if (l > 2 && __result == 0) \
+ __result = ((unsigned char) (s1)[3] \
+ - (unsigned char) (s2)[3]); \
+ } \
+ } \
+ __result; }))
+
#define __strcmp_cg(s1, s2, l1) \
(__extension__ ({ __const unsigned char *__s2 = (unsigned char *) (s2); \
register int __result = (unsigned char) (s1)[0] - __s2[0];\
@@ -1076,32 +1098,28 @@ __strcspn_c1 (__const char *__s, int __reject)
return (__res - 1) - __s;
}
-#ifdef __PIC__
__STRING_INLINE size_t
__strcspn_cg (__const char *__s, __const char __reject[], size_t __reject_len)
{
register __const char *__res;
- int __mem;
__asm__ __volatile__
- ("movl %%ebx,%1\n\t"
- "movl %%ecx,%%ebx\n\t"
- "cld\n"
+ ("cld\n"
"1:\n\t"
"lodsb\n\t"
"testb %%al,%%al\n\t"
"je 2f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%ebx,%%ecx\n\t"
+ "movl %2,%%edi\n\t"
+ "movl %3,%%ecx\n\t"
"repne; scasb\n\t"
"jne 1b\n"
- "2:\n\t"
- "movl %1,%%ebx"
- : "=S" (__res), "=&m" (__mem)
- : "c" (__reject_len), "0" (__s), "r" (__reject), "1" (__mem)
+ "2:"
+ : "=S" (__res)
+ : "0" (__s), "d" (__reject), "g" (__reject_len)
: "ax", "cx", "di", "cc");
return (__res - 1) - __s;
}
+#ifdef __PIC__
__STRING_INLINE size_t
__strcspn_g (__const char *__s, __const char *__reject)
{
@@ -1131,27 +1149,6 @@ __strcspn_g (__const char *__s, __const char *__reject)
}
#else
__STRING_INLINE size_t
-__strcspn_cg (__const char *__s, __const char __reject[], size_t __reject_len)
-{
- register __const char *__res;
- __asm__ __volatile__
- ("cld\n"
- "1:\n\t"
- "lodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %%ebx,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne; scasb\n\t"
- "jne 1b\n"
- "2:"
- : "=S" (__res)
- : "d" (__reject_len), "0" (__s), "b" (__reject)
- : "ax", "cx", "di", "cc");
- return (__res - 1) - __s;
-}
-
-__STRING_INLINE size_t
__strcspn_g (__const char *__s, __const char *__reject)
{
register __const char *__res;
@@ -1199,40 +1196,35 @@ __strspn_c1 (__const char *__s, int __accept)
"movb (%0),%%al\n\t"
"leal 1(%0),%0\n\t"
"cmpb %%ah,%%al\n\t"
- "je 1b\n"
- "2:"
+ "je 1b"
: "=r" (__res)
: "a" (__accept), "0" (__s)
: "ax", "cc");
return (__res - 1) - __s;
}
-#ifdef __PIC__
__STRING_INLINE size_t
__strspn_cg (__const char *__s, __const char __accept[], size_t __accept_len)
{
register __const char *__res;
- int __mem;
__asm__ __volatile__
- ("movl %%ebx,%1\n\t"
- "movl %%ecx,%%ebx\n\t"
- "cld\n"
+ ("cld\n"
"1:\n\t"
"lodsb\n\t"
"testb %%al,%%al\n\t"
"je 2f\n\t"
- "movl %%edx,%%edi\n\t"
- "movl %%ebx,%%ecx\n\t"
+ "movl %2,%%edi\n\t"
+ "movl %3,%%ecx\n\t"
"repne; scasb\n\t"
"je 1b\n"
- "2:\n\t"
- "movl %1,%%ebx"
- : "=S" (__res), "=m" (__mem)
- : "c" (__accept_len), "0" (__s), "d" (__accept), "1" (__mem)
+ "2:"
+ : "=S" (__res)
+ : "0" (__s), "d" (__accept), "g" (__accept_len)
: "ax", "cx", "di", "cc");
return (__res - 1) - __s;
}
+#ifdef __PIC__
__STRING_INLINE size_t
__strspn_g (__const char *__s, __const char *__accept)
{
@@ -1262,27 +1254,6 @@ __strspn_g (__const char *__s, __const char *__accept)
}
#else
__STRING_INLINE size_t
-__strspn_cg (__const char *__s, __const char __accept[], size_t __accept_len)
-{
- register __const char *__res;
- __asm__ __volatile__
- ("cld\n"
- "1:\n\t"
- "lodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %%ebx,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne; scasb\n\t"
- "je 1b\n"
- "2:"
- : "=S" (__res)
- : "d" (__accept_len), "0" (__s), "b" (__accept), "D" (__accept)
- : "ax", "cx", "dx", "di", "cc");
- return (__res - 1) - __s;
-}
-
-__STRING_INLINE size_t
__strspn_g (__const char *__s, __const char *__accept)
{
register __const char *__res;
@@ -1319,36 +1290,32 @@ __strspn_g (__const char *__s, __const char *__accept)
: __strpbrk_cg (s, accept, strlen (accept)))) \
: __strpbrk_g (s, accept)))
-#ifdef __PIC__
__STRING_INLINE char *
__strpbrk_cg (__const char *__s, __const char __accept[], size_t __accept_len)
{
register char *__res;
- int __mem;
__asm__ __volatile__
- ("movl %%ebx,%1\n\t"
- "movl %%ecx,%%ebx\n\t"
- "cld\n"
+ ("cld\n"
"1:\n\t"
"lodsb\n\t"
"testb %%al,%%al\n\t"
"je 2f\n\t"
- "movl %%edx,%%edi\n\t"
- "movl %%ebx,%%ecx\n\t"
+ "movl %2,%%edi\n\t"
+ "movl %3,%%ecx\n\t"
"repne; scasb\n\t"
"jne 1b\n\t"
"decl %0\n\t"
"jmp 3f\n"
"2:\n\t"
"xorl %0,%0\n"
- "3:\n\t"
- "movl %1,%%ebx"
- : "=S" (__res), "=m" (__mem)
- : "c" (__accept_len), "0" (__s), "d" (__accept), "1" (__mem)
+ "3:"
+ : "=S" (__res)
+ : "0" (__s), "d" (__accept), "g" (__accept_len)
: "ax", "cx", "di", "cc");
return __res;
}
+#ifdef __PIC__
__STRING_INLINE char *
__strpbrk_g (__const char *__s, __const char *__accept)
{
@@ -1382,32 +1349,6 @@ __strpbrk_g (__const char *__s, __const char *__accept)
}
#else
__STRING_INLINE char *
-__strpbrk_cg (__const char *__s, __const char __accept[], size_t __accept_len)
-{
- register char *__res;
- __asm__ __volatile__
- ("movl %%ebx,%%edi\n\t"
- "cld\n"
- "1:\n\t"
- "lodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %%ebx,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne; scasb\n\t"
- "jne 1b\n\t"
- "decl %0\n\t"
- "jmp 3f\n"
- "2:\n\t"
- "xorl %0,%0\n"
- "3:"
- : "=S" (__res)
- : "d" (__accept_len), "0" (__s), "b" (__accept)
- : "ax", "cx", "dx", "di", "cc");
- return __res;
-}
-
-__STRING_INLINE char *
__strpbrk_g (__const char *__s, __const char *__accept)
{
register char *__res;
@@ -1440,18 +1381,15 @@ __strpbrk_g (__const char *__s, __const char *__accept)
/* Find the first occurrence of NEEDLE in HAYSTACK. */
#define _HAVE_STRING_ARCH_strstr 1
-#ifdef __PIC__
-/* XXX GCC has problems to spill the registers. */
-# define strstr(haystack, needle) \
+#define strstr(haystack, needle) \
(__extension__ (__builtin_constant_p (needle) && sizeof ((needle)[0]) == 1 \
? ((needle)[0] == '\0' \
? haystack \
: ((needle)[1] == '\0' \
- ? strchr (haystack, (needle)[0]) \
- : strstr (haystack, needle))) \
- : strstr (haystack, needle)))
+ ? strchr (haystack, (needle)[0]) \
+ : __strstr_cg (haystack, needle, strlen (needle)))) \
+ : __strstr_g (haystack, needle)))
-# if 0
/* Please note that this function need not handle NEEDLEs with a
length shorter than two. */
__STRING_INLINE char *
@@ -1459,29 +1397,30 @@ __strstr_cg (__const char *__haystack, __const char __needle[],
size_t __needle_len)
{
register char *__res;
- int __mem;
__asm__ __volatile__
- ("movl %%ebx,%1\n\t"
- "movl %%ecx,%%ebx\n"
- "cld\n" \
+ ("cld\n" \
"1:\n\t"
- "movl %%edx,%%edi\n\t"
- "movl %%esi,%%eax\n\t"
- "movl %%ebx,%%ecx\n\t"
+ "movl %3,%%edi\n\t"
+ "movl %2,%%eax\n\t"
+ "movl %1,%%ecx\n\t"
"repe; cmpsb\n\t"
"je 2f\n\t"
"cmpb $0,-1(%%esi)\n\t"
- "leal 1(%%eax),%%esi\n\t"
+ "leal 1(%%eax),%2\n\t"
"jne 1b\n\t"
"xorl %%eax,%%eax\n"
- "2:\n\t"
- "movl %1,%%ebx"
- : "=a" (__res), "=m" (__mem)
- : "c" (__needle_len), "S" (__haystack), "d" (__needle), "1" (__mem)
+ "2:"
+ : "=a" (__res)
+ : "g" (__needle_len), "S" (__haystack), "d" (__needle)
: "cx", "di", "si", "cc");
return __res;
}
+#ifdef __PIC__
+# if 1
+/* For now this does not always works due to spilling problems. */
+# define __strstr_g(haystack, needle) strstr (haystack, needle)
+# else
__STRING_INLINE char *
__strstr_g (__const char *__haystack, __const char *__needle)
{
@@ -1514,39 +1453,6 @@ __strstr_g (__const char *__haystack, __const char *__needle)
}
# endif
#else
-# define strstr(haystack, needle) \
- (__extension__ (__builtin_constant_p (needle) && sizeof ((needle)[0]) == 1 \
- ? ((needle)[0] == '\0' \
- ? haystack \
- : ((needle)[1] == '\0' \
- ? strchr (haystack, (needle)[0]) \
- : __strstr_cg (haystack, needle, strlen (needle)))) \
- : __strstr_g (haystack, needle)))
-
-__STRING_INLINE char *
-__strstr_cg (__const char *__haystack, __const char __needle[],
- size_t __needle_len)
-{
- register char *__res;
- __asm__ __volatile__
- ("cld\n" \
- "1:\n\t"
- "movl %%ebx,%%edi\n\t"
- "movl %%esi,%%eax\n\t"
- "movl %%edx,%%ecx\n\t"
- "repe; cmpsb\n\t"
- "je 2f\n\t"
- "cmpb $0,-1(%%esi)\n\t"
- "leal 1(%%eax),%%esi\n\t"
- "jne 1b\n\t"
- "xorl %%eax,%%eax\n"
- "2:"
- : "=a" (__res)
- : "d" (__needle_len), "S" (__haystack), "b" (__needle)
- : "cx", "dx", "di", "si", "cc");
- return __res;
-}
-
__STRING_INLINE char *
__strstr_g (__const char *__haystack, __const char *__needle)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-27 20:06:49 +0000