diff options
Diffstat (limited to 'sysdeps/i386/i486/bits')
| -rw-r--r-- | sysdeps/i386/i486/bits/string.h | 850 |
1 files changed, 729 insertions, 121 deletions
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h index f141bd50e1..770f5c1e15 100644 --- a/sysdeps/i386/i486/bits/string.h +++ b/sysdeps/i386/i486/bits/string.h @@ -32,16 +32,19 @@ /* Copy N bytes of SRC to DEST. */ +#define _HAVE_STRING_ARCH_memcpy 1 #define memcpy(dest, src, n) \ (__extension__ (__builtin_constant_p (n) \ ? __memcpy_c (dest, src, n) \ : __memcpy_g (dest, src, n))) #define __memcpy_c(dest, src, n) \ - (((n) % 4 == 0) \ - ? __memcpy_by4 (dest, src, n) \ - : (((n) % 2 == 0) \ - ? __memcpy_by2 (dest, src, n) \ - : __memcpy_g (dest, src, n))) + ((n) == 0 \ + ? (dest) \ + : (((n) % 4 == 0) \ + ? __memcpy_by4 (dest, src, n) \ + : (((n) % 2 == 0) \ + ? __memcpy_by2 (dest, src, n) \ + : __memcpy_g (dest, src, n)))) __STRING_INLINE void * __memcpy_by4 (void *__dest, __const void *__src, size_t __n) @@ -135,6 +138,7 @@ memmove (void *__dest, __const void *__src, size_t __n) /* Compare N bytes of S1 and S2. */ +#define _HAVE_STRING_ARCH_memcmp 1 #ifndef __PIC__ /* gcc has problems to spill registers when using PIC. */ __STRING_INLINE int @@ -157,6 +161,7 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) /* Set N bytes of S to C. */ +#define _HAVE_STRING_ARCH_memset 1 #define memset(s, c, n) \ (__extension__ (__builtin_constant_p (c) \ ? (__builtin_constant_p (n) \ @@ -166,17 +171,21 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) ? __memset_gc (s, c, n) \ : __memset_gg (s, c, n)))) #define __memset_cc(s, c, n) \ - (((n) % 4 == 0) \ - ? __memset_cc_by4 (s, c, n) \ - : (((n) % 2== 0) \ - ? __memset_cc_by2 (s, c, n) \ - : __memset_cg (s, c, n))) + ((n) == 0 \ + ? (s) \ + : (((n) % 4 == 0) \ + ? __memset_cc_by4 (s, c, n) \ + : (((n) % 2== 0) \ + ? __memset_cc_by2 (s, c, n) \ + : __memset_cg (s, c, n)))) #define __memset_gc(s, c, n) \ - (((n) % 4== 0) \ - ? __memset_gc_by4 (s, c, n) \ - : (((n) % 2 == 0) \ - ? __memset_gc_by2 (s, c, n) \ - : __memset_gg (s, c, n))) + ((n) == 0 \ + ? (s) \ + : (((n) % 4== 0) \ + ? __memset_gc_by4 (s, c, n) \ + : (((n) % 2 == 0) \ + ? __memset_gc_by2 (s, c, n) \ + : __memset_gg (s, c, n)))) __STRING_INLINE void * __memset_cc_by4 (void *__s, int __c, size_t __n) @@ -196,7 +205,7 @@ __memset_cc_by4 (void *__s, int __c, size_t __n) } __STRING_INLINE void * -__memset_cc_by2 (void *__s, char __c, size_t __n) +__memset_cc_by2 (void *__s, int __c, size_t __n) { register void *__tmp = __s; register int __dummy; @@ -217,7 +226,7 @@ __memset_cc_by2 (void *__s, char __c, size_t __n) } __STRING_INLINE void * -__memset_gc_by4 (void *__s, char __c, size_t __n) +__memset_gc_by4 (void *__s, int __c, size_t __n) { register void *__tmp = __s; register int __dummy; @@ -238,7 +247,7 @@ __memset_gc_by4 (void *__s, char __c, size_t __n) } __STRING_INLINE void * -__memset_gc_by2 (void *__s, char __c, size_t __n) +__memset_gc_by2 (void *__s, int __c, size_t __n) { register void *__tmp = __s; register int __dummy1, __dummy2; @@ -263,7 +272,7 @@ __memset_gc_by2 (void *__s, char __c, size_t __n) } __STRING_INLINE void * -__memset_cg (void *__s, char __c, size_t __n) +__memset_cg (void *__s, int __c, size_t __n) { register void *__tmp = __s; __asm__ __volatile__ @@ -279,7 +288,7 @@ __memset_cg (void *__s, char __c, size_t __n) } __STRING_INLINE void * -__memset_gg (void *__s, char __c, size_t __n) +__memset_gg (void *__s, int __c, size_t __n) { register void *__tmp = __s; __asm__ __volatile__ @@ -297,6 +306,7 @@ __memset_gg (void *__s, char __c, size_t __n) /* Search N bytes of S for C. */ +#define _HAVE_STRING_ARCH_memchr 1 __STRING_INLINE void * memchr (__const void *__s, int __c, size_t __n) { @@ -318,16 +328,21 @@ memchr (__const void *__s, int __c, size_t __n) /* Return the length of S. */ +#define _HAVE_STRING_ARCH_strlen 1 +#define strlen(str) \ + (__extension__ (__builtin_constant_p (str) \ + ? sizeof (str) - 1 \ + : __strlen_g (str))) __STRING_INLINE size_t -strlen (__const char *__str) +__strlen_g (__const char *__str) { register char __dummy; register __const char *__tmp = __str; __asm__ __volatile__ ("1:\n\t" - "movb (%0),%1\n\t" + "movb (%0),%b1\n\t" "leal 1(%0),%0\n\t" - "testb %1,%1\n\t" + "testb %b1,%b1\n\t" "jne 1b" : "=r" (__tmp), "=q" (__dummy) : "0" (__str) @@ -337,19 +352,25 @@ strlen (__const char *__str) /* Copy SRC to DEST. */ +#define _HAVE_STRING_ARCH_strcpy 1 +#define strcpy(dest, src) \ + (__extension__ (__builtin_constant_p (src) \ + ? (char *) memcpy (dest, src, strlen (src) + 1) \ + : __strcpy_g (dest, src))) + __STRING_INLINE char * -strcpy (char *__dest, __const char *__src) +__strcpy_g (char *__dest, __const char *__src) { register char *__tmp = __dest; register char __dummy; __asm__ __volatile__ ( "1:\n\t" - "movb (%0),%2\n\t" - "incl %0\n\t" - "movb %2,(%1)\n\t" - "incl %1\n\t" - "testb %2,%2\n\t" + "movb (%0),%b2\n\t" + "leal 1(%0),%0\n\t" + "movb %b2,(%1)\n\t" + "leal 1(%1),%1\n\t" + "testb %b2,%b2\n\t" "jne 1b" : "=r" (__src), "=r" (__tmp), "=q" (__dummy) : "0" (__src), "1" (__tmp) @@ -358,9 +379,233 @@ strcpy (char *__dest, __const char *__src) } +#ifdef __USE_GNU +# define _HAVE_STRING_ARCH_stpcpy 1 +/* Copy SRC to DEST. */ +# define __stpcpy(dest, src) \ + (__extension__ (__builtin_constant_p (src) \ + ? (strlen (src) + 1 <= 8 \ + ? __stpcpy_small (dest, src, strlen (src) + 1) \ + : __stpcpy_c (dest, src, strlen (src) + 1)) \ + : __stpcpy_g (dest, src))) +# define __stpcpy_c(dest, src, srclen) \ + ((srclen) % 4 == 0 \ + ? __mempcpy_by4 (dest, src, srclen) \ + : ((srclen) % 2 == 0 \ + ? __mempcpy_by2 (dest, src, srclen) \ + : __mempcpy_byn (dest, src, srclen))) + +/* 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; +} + +__STRING_INLINE char * +__mempcpy_by4 (char *__dest, __const char *__src, size_t __srclen) +{ + register char *__tmp = __dest; + register int __dummy1, __dummy2; + __asm__ __volatile__ + ("1:\n\t" + "movl (%2),%0\n\t" + "leal 4(%2),%2\n\t" + "movl %0,(%1)\n\t" + "leal 4(%1),%1\n\t" + "decl %3\n\t" + "jnz 1b" + : "=r" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2) + : "1" (__tmp), "2" (__src), "3" (__srclen / 4) + : "memory", "cc"); + return __tmp - 1; +} + +__STRING_INLINE char * +__mempcpy_by2 (char *__dest, __const char *__src, size_t __srclen) +{ + register char *__tmp = __dest; + register int __dummy1, __dummy2; + __asm__ __volatile__ + ("shrl $1,%3\n\t" + "jz 2f\n" /* only a word */ + "1:\n\t" + "movl (%2),%0\n\t" + "leal 4(%2),%2\n\t" + "movl %0,(%1)\n\t" + "leal 4(%1),%1\n\t" + "decl %3\n\t" + "jnz 1b\n" + "2:\n\t" + "movw (%2),%w0\n\t" + "movw %w0,(%1)" + : "=q" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2) + : "1" (__tmp), "2" (__src), "3" (__srclen / 2) + : "memory", "cc"); + return __tmp + 1; +} + +__STRING_INLINE char * +__mempcpy_byn (char *__dest, __const char *__src, size_t __srclen) +{ + register char *__tmp = __dest; + __asm__ __volatile__ + ("cld\n\t" + "shrl $1,%%ecx\n\t" + "jnc 1f\n\t" + "movsb\n" + "1:\n\t" + "shrl $1,%%ecx\n\t" + "jnc 2f\n\t" + "movsw\n" + "2:\n\t" + "rep; movsl" + : "=D" (__tmp) + : "c" (__srclen), "0" (__tmp),"S" (__src) + : "cx", "di", "si", "memory", "cc"); + return __tmp - 1; +} + +__STRING_INLINE char * +__stpcpy_g (char *__dest, __const char *__src) +{ + register char *__tmp = __dest; + register char __dummy; + __asm__ __volatile__ + ( + "1:\n\t" + "movb (%0),%b2\n\t" + "leal 1(%0),%0\n\t" + "movb %b2,(%1)\n\t" + "leal 1(%1),%1\n\t" + "testb %b2,%b2\n\t" + "jne 1b" + : "=r" (__src), "=r" (__tmp), "=q" (__dummy) + : "0" (__src), "1" (__tmp) + : "memory", "cc"); + return __tmp - 1; +} +#endif + + /* Copy no more than N characters of SRC to DEST. */ +#define _HAVE_STRING_ARCH_strncpy 1 +#define strncpy(dest, src, n) \ + (__extension__ (__builtin_constant_p (src) \ + ? ((strlen (src) + 1 >= ((size_t) (n)) \ + ? (char *) memcpy (dest, src, n) \ + : __strncpy_cg (dest, src, strlen (src) + 1, n))) \ + : __strncpy_gg (dest, src, n))) +#define __strncpy_cg(dest, src, srclen, n) \ + (((srclen) % 4 == 0) \ + ? __strncpy_by4 (dest, src, srclen, n) \ + : (((srclen) % 2 == 0) \ + ? __strncpy_by2 (dest, src, srclen, n) \ + : __strncpy_byn (dest, src, srclen, n))) + +__STRING_INLINE char * +__strncpy_by4 (char *__dest, __const char __src[], size_t __srclen, size_t __n) +{ + register char *__tmp = __dest; + register int __dummy1, __dummy2; + __asm__ __volatile__ + ("1:\n\t" + "movl (%2),%0\n\t" + "leal 4(%2),%2\n\t" + "movl %0,(%1)\n\t" + "leal 4(%1),%1\n\t" + "decl %3\n\t" + "jnz 1b" + : "=r" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2) + : "1" (__tmp), "2" (__src), "3" (__srclen / 4) + : "memory", "cc"); + (void) memset (__tmp, '\0', __n - __srclen); + return __dest; +} + __STRING_INLINE char * -strncpy (char *__dest, __const char *__src, size_t __n) +__strncpy_by2 (char *__dest, __const char __src[], size_t __srclen, size_t __n) +{ + register char *__tmp = __dest; + register int __dummy1, __dummy2; + __asm__ __volatile__ + ("shrl $1,%3\n\t" + "jz 2f\n" /* only a word */ + "1:\n\t" + "movl (%2),%0\n\t" + "leal 4(%2),%2\n\t" + "movl %0,(%1)\n\t" + "leal 4(%1),%1\n\t" + "decl %3\n\t" + "jnz 1b\n" + "2:\n\t" + "movw (%2),%w0\n\t" + "movw %w0,(%1)\n\t" + : "=q" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2) + : "1" (__tmp), "2" (__src), "3" (__srclen / 2) + : "memory", "cc"); + (void) memset (__tmp + 2, '\0', __n - __srclen); + return __dest; +} + +__STRING_INLINE char * +__strncpy_byn (char *__dest, __const char __src[], size_t __srclen, size_t __n) +{ + register char *__tmp = __dest; + __asm__ __volatile__ + ("cld\n\t" + "shrl $1,%%ecx\n\t" + "jnc 1f\n\t" + "movsb\n" + "1:\n\t" + "shrl $1,%%ecx\n\t" + "jnc 2f\n\t" + "movsw\n" + "2:\n\t" + "rep; movsl" + : "=D" (__tmp) + : "c" (__srclen), "0" (__tmp),"S" (__src) + : "cx", "di", "si", "memory", "cc"); + (void) memset (__tmp, '\0', __n - __srclen); + return __dest; +} + +__STRING_INLINE char * +__strncpy_gg (char *__dest, __const char *__src, size_t __n) { register char *__tmp = __dest; register char __dummy; @@ -390,14 +635,35 @@ strncpy (char *__dest, __const char *__src, size_t __n) /* Append SRC onto DEST. */ +#define _HAVE_STRING_ARCH_strcat 1 +#define strcat(dest, src) \ + (__extension__ (__builtin_constant_p (src) \ + ? __strcat_c (dest, src, strlen (src) + 1) \ + : __strcat_g (dest, src))) + +__STRING_INLINE char * +__strcat_c (char *__dest, __const char __src[], size_t __srclen) +{ + register char *__tmp = __dest - 1; + __asm__ __volatile__ + ("1:\n\t" + "incl %0\n\t" + "cmpb $0,(%0)\n\t" + "jne 1b\n" + : "=r" (__tmp) + : "0" (__tmp) + : "cc"); + (void) memcpy (__tmp, __src, __srclen); + return __dest; +} + __STRING_INLINE char * -strcat (char *__dest, __const char *__src) +__strcat_g (char *__dest, __const char *__src) { register char *__tmp = __dest - 1; register char __dummy; __asm__ __volatile__ - ( - "1:\n\t" + ("1:\n\t" "incl %1\n\t" "cmpb $0,(%1)\n\t" "jne 1b\n" @@ -416,16 +682,23 @@ strcat (char *__dest, __const char *__src) /* Append no more than N characters from SRC onto DEST. */ +#define _HAVE_STRING_ARCH_strncat 1 +#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), dest)) \ + : __strncat_g (dest, src, n))) + __STRING_INLINE char * -strncat (char *__dest, __const char *__src, size_t __n) +__strncat_g (char *__dest, __const char __src[], size_t __n) { register char *__tmp = __dest - 1; register char __dummy; __asm__ __volatile__ - ( - "1:\n\t" - "incl %1\n\t" - "cmpb $0,(%1)\n\t" + ("1:\n\t" + "cmpb $0,1(%1)\n\t" + "leal 1(%1),%1\n\t" "jne 1b\n" "2:\n\t" "decl %3\n\t" @@ -435,7 +708,8 @@ strncat (char *__dest, __const char *__src, size_t __n) "movb %b0,(%1)\n\t" "leal 1(%1),%1\n\t" "testb %b0,%b0\n\t" - "jne 2b\n" + "jne 2b\n\t" + "decl %1\n" "3:\n\t" "movb $0,(%1)\n\t" : "=q" (__dummy), "=r" (__tmp), "=r" (__src), "=r" (__n) @@ -446,6 +720,7 @@ strncat (char *__dest, __const char *__src, size_t __n) /* Compare S1 and S2. */ +#define _HAVE_STRING_ARCH_strcmp 1 __STRING_INLINE int strcmp (__const char *__s1, __const char *__s2) { @@ -474,8 +749,16 @@ strcmp (__const char *__s1, __const char *__s2) /* Compare N characters of S1 and S2. */ +#define _HAVE_STRING_ARCH_strncmp 1 +#define strncmp(s1, s2, n) \ + (__extension__ (__builtin_constant_p (s1) && strlen (s1) < ((size_t) (n)) \ + ? strcmp (s1, s2) \ + : (__builtin_constant_p (s2) && strlen (s2) < ((size_t) (n))\ + ? strcmp (s1, s2) \ + : __strncmp_g (s1, s2, n)))) + __STRING_INLINE int -strncmp (__const char *__s1, __const char *__s2, size_t __n) +__strncmp_g (__const char *__s1, __const char *__s2, size_t __n) { register int __res; __asm__ __volatile__ @@ -505,18 +788,18 @@ strncmp (__const char *__s1, __const char *__s2, size_t __n) /* Find the first occurrence of C in S. */ +#define _HAVE_STRING_ARCH_strchr 1 #define strchr(s, c) \ (__extension__ (__builtin_constant_p (c) \ ? __strchr_c (s, ((c) & 0xff) << 8) \ : __strchr_g (s, c))) __STRING_INLINE char * -__strchr_g (__const char *__s, int __c) +__strchr_c (__const char *__s, int __c) { register char *__res; __asm__ __volatile__ - ("movb %%al,%%ah\n" - "1:\n\t" + ("1:\n\t" "movb (%0),%%al\n\t" "cmpb %%ah,%%al\n\t" "je 2f\n\t" @@ -532,11 +815,12 @@ __strchr_g (__const char *__s, int __c) } __STRING_INLINE char * -__strchr_c (__const char *__s, int __c) +__strchr_g (__const char *__s, int __c) { register char *__res; __asm__ __volatile__ - ("1:\n\t" + ("movb %%al,%%ah\n" + "1:\n\t" "movb (%0),%%al\n\t" "cmpb %%ah,%%al\n\t" "je 2f\n\t" @@ -553,18 +837,56 @@ __strchr_c (__const char *__s, int __c) /* Find the last occurrence of C in S. */ +#define _HAVE_STRING_ARCH_strrchr 1 #define strrchr(s, c) \ (__extension__ (__builtin_constant_p (c) \ ? __strrchr_c (s, ((c) & 0xff) << 8) \ : __strrchr_g (s, c))) +#ifdef __i686__ +__STRING_INLINE char * +__strrchr_c (__const char *__s, int __c) +{ + register char *__res; + __asm__ __volatile__ + ("cld\n" + "1:\n\t" + "lodsb\n\t" + "cmpb %%ah,%%al\n\t" + "cmovne %%esi,%0\n\t" + "testb %%al,%%al\n\t" + "jne 1b" + : "=d" (__res) + : "0" (1), "S" (__s),"a" (__c) + : "ax", "si", "cc"); + return __res - 1; +} + __STRING_INLINE char * __strrchr_g (__const char *__s, int __c) { register char *__res; __asm__ __volatile__ - ("cld\n\t" - "movb %%al,%%ah\n" + ("movb %%al,%%ah\n" + "cld\n\t" + "1:\n\t" + "lodsb\n\t" + "cmpb %%ah,%%al\n\t" + "cmovne %%esi,%0\n\t" + "testb %%al,%%al\n\t" + "jne 1b" + : "=r" (__res) + : "0" (1), "S" (__s),"a" (__c) + : "ax", "si", "cc"); + return __res - 1; +} +#else +__STRING_INLINE char * +__strrchr_c (__const char *__s, int __c) +{ + register char *__res; + __asm__ __volatile__ + ("cld\n" "1:\n\t" "lodsb\n\t" "cmpb %%ah,%%al\n\t" @@ -580,11 +902,12 @@ __strrchr_g (__const char *__s, int __c) } __STRING_INLINE char * -__strrchr_c (__const char *__s, int __c) +__strrchr_g (__const char *__s, int __c) { register char *__res; __asm__ __volatile__ - ("cld\n\t" + ("movb %%al,%%ah\n" + "cld\n\t" "1:\n\t" "lodsb\n\t" "cmpb %%ah,%%al\n\t" @@ -593,66 +916,140 @@ __strrchr_c (__const char *__s, int __c) "2:\n\t" "testb %%al,%%al\n\t" "jne 1b" - : "=d" (__res) + : "=r" (__res) : "0" (0), "S" (__s),"a" (__c) : "ax", "si", "cc"); return __res; } +#endif /* Return the length of the initial segment of S which consists entirely of characters not in REJECT. */ -#ifdef __PIC__ +#define _HAVE_STRING_ARCH_strcspn 1 +#define strcspn(s, reject) \ + (__extension__ (__builtin_constant_p (reject) && sizeof ((reject)[0]) == 1 \ + ? ((reject)[0] == '\0' \ + ? strlen (s) \ + : ((reject)[1] == '\0' \ + ? __strcspn_c1 (s, (((reject)[0] << 8) & 0xff00)) \ + : __strcspn_cg (s, reject, strlen (reject)))) \ + : __strcspn_g (s, reject))) + __STRING_INLINE size_t -strcspn (__const char *__s, __const char *__reject) +__strcspn_c1 (__const char *__s, int __reject) { register char *__res; __asm__ __volatile__ - ("push %%ebx\n\t" - "cld\n\t" + ("1:\n\t" + "movb (%0),%%al\n\t" + "leal 1(%0),%0\n\t" + "cmpb %%ah,%%al\n\t" + "je 2f\n\t" + "testb %%al,%%al\n\t" + "jne 1b\n" + "2:" + : "=r" (__res) + : "a" (__reject), "0" (__s) + : "ax", "cc"); + 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" + "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" + "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) + : "ax", "cx", "di", "cc"); + return (__res - 1) - __s; +} + +__STRING_INLINE size_t +__strcspn_g (__const char *__s, __const char *__reject) +{ + register __const char *__res; + int __mem; + __asm__ __volatile__ + ("movl %%ebx,%1\n\t" + "movl %5,%%edi\n\t" + "cld\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%ebx\n" + "leal -1(%%ecx),%%ebx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %5,%%edi\n\t" "movl %%ebx,%%ecx\n\t" "repne; scasb\n\t" "jne 1b\n" "2:\n\t" - "popl %%ebx" - : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__reject) + "movl %1,%%ebx" + : "=S" (__res), "=&m" (__mem) + : "a" (0), "c" (0xffffffff), "0" (__s), "r" (__reject), "1" (__mem) : "ax", "cx", "di", "cc"); return (__res - 1) - __s; } #else __STRING_INLINE size_t -strcspn (__const char *__s, __const char *__reject) +__strcspn_cg (__const char *__s, __const char __reject[], size_t __reject_len) { - register char *__res; + 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; __asm__ __volatile__ ("cld\n\t" - "movl %4,%%edi\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%edx\n" + "leal -1(%%ecx),%%edx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %%ebx,%%edi\n\t" "movl %%edx,%%ecx\n\t" "repne; scasb\n\t" "jne 1b\n" "2:" : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__reject) + : "a" (0), "c" (0xffffffff), "0" (__s), "b" (__reject), "D" (__reject) : "ax", "cx", "dx", "di", "cc"); return (__res - 1) - __s; } @@ -661,57 +1058,129 @@ strcspn (__const char *__s, __const char *__reject) /* Return the length of the initial segment of S which consists entirely of characters in ACCEPT. */ -#ifdef __PIC__ +#define _HAVE_STRING_ARCH_strspn 1 +#define strspn(s, accept) \ + (__extension__ (__builtin_constant_p (accept) && sizeof ((accept)[0]) == 1 \ + ? ((accept)[0] == '\0' \ + ? 0 \ + : ((accept)[1] == '\0' \ + ? __strspn_c1 (s, (((accept)[0] << 8 ) & 0xff00)) \ + : __strspn_cg (s, accept, strlen (accept)))) \ + : __strspn_g (s, accept))) + __STRING_INLINE size_t -strspn (__const char *__s, __const char *__accept) +__strspn_c1 (__const char *__s, int __accept) { register char *__res; + /* Please note that __accept never can be '\0'. */ __asm__ __volatile__ - ("pushl %%ebx\n\t" + ("1:\n\t" + "movb (%0),%%al\n\t" + "leal 1(%0),%0\n\t" + "cmpb %%ah,%%al\n\t" + "je 1b\n" + "2:" + : "=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" + "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" + "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) + : "ax", "cx", "di", "cc"); + return (__res - 1) - __s; +} + +__STRING_INLINE size_t +__strspn_g (__const char *__s, __const char *__accept) +{ + register __const char *__res; + int __mem; + __asm__ __volatile__ + ("movl %%ebx,%1\n\t" "cld\n\t" - "movl %4,%%edi\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%ebx\n" + "leal -1(%%ecx),%%ebx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %%edx,%%edi\n\t" "movl %%ebx,%%ecx\n\t" "repne; scasb\n\t" "je 1b\n" "2:\n\t" - "popl %%ebx" - : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept) + "movl %1,%%ebx" + : "=S" (__res), "=m" (__mem) + : "a" (0), "c" (0xffffffff), "0" (__s), "d" (__accept), "1" (__mem), + "D" (__accept) : "ax", "cx", "di", "cc"); return (__res - 1) - __s; } #else __STRING_INLINE size_t -strspn (__const char *__s, __const char *__accept) +__strspn_cg (__const char *__s, __const char __accept[], size_t __accept_len) { - register char *__res; + 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; __asm__ __volatile__ ("cld\n\t" - "movl %4,%%edi\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%edx\n" + "leal -1(%%ecx),%%edx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %%ebx,%%edi\n\t" "movl %%edx,%%ecx\n\t" "repne; scasb\n\t" "je 1b\n" "2:" : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept) + : "a" (0), "c" (0xffffffff), "0" (__s), "b" (__accept), "D" (__accept) : "ax", "cx", "dx", "di", "cc"); return (__res - 1) - __s; } @@ -719,24 +1188,63 @@ strspn (__const char *__s, __const char *__accept) /* Find the first occurrence in S of any character in ACCEPT. */ +#define _HAVE_STRING_ARCH_strpbrk 1 +#define strpbrk(s, accept) \ + (__extension__ (__builtin_constant_p (accept) && sizeof ((accept)[0]) == 1 \ + ? ((accept)[0] == '\0' \ + ? NULL \ + : ((accept)[1] == '\0' \ + ? strchr (s, (accept)[0]) \ + : __strpbrk_cg (s, accept, strlen (accept)))) \ + : __strpbrk_g (s, accept))) + #ifdef __PIC__ __STRING_INLINE char * -strpbrk (__const char *__s, __const char *__accept) +__strpbrk_cg (__const char *__s, __const char __accept[], size_t __accept_len) { register char *__res; + int __mem; __asm__ __volatile__ - ("pushl %%ebx\n\t" + ("movl %%ebx,%1\n\t" + "movl %%ecx,%%ebx\n\t" + "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" + "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) + : "ax", "cx", "di", "cc"); + return __res; +} + +__STRING_INLINE char * +__strpbrk_g (__const char *__s, __const char *__accept) +{ + register char *__res; + int __mem; + __asm__ __volatile__ + ("movl %%ebx,%1\n\t" + "movl %%edx,%%edi\n\t" "cld\n\t" - "movl %4,%%edi\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%ebx\n" + "leal -1(%%ecx),%%ebx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %%edx,%%edi\n\t" "movl %%ebx,%%ecx\n\t" "repne; scasb\n\t" "jne 1b\n\t" @@ -745,29 +1253,54 @@ strpbrk (__const char *__s, __const char *__accept) "2:\n\t" "xorl %0,%0\n" "3:\n\t" - "popl %%ebx" - : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept) + "movl %1,%%ebx" + : "=S" (__res), "=m" (__mem) + : "a" (0), "c" (0xffffffff), "0" (__s), "d" (__accept), "1" (__mem) : "ax", "cx", "di", "cc"); return __res; } #else __STRING_INLINE char * -strpbrk (__const char *__s, __const char *__accept) +__strpbrk_cg (__const char *__s, __const char __accept[], size_t __accept_len) { register char *__res; __asm__ __volatile__ - ("cld\n\t" - "movl %4,%%edi\n\t" + ("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; + __asm__ __volatile__ + ("movl %%ebx,%%edi\n\t" + "cld\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" - "decl %%ecx\n\t" - "movl %%ecx,%%edx\n" + "leal -1(%%ecx),%%edx\n" "1:\n\t" "lodsb\n\t" "testb %%al,%%al\n\t" "je 2f\n\t" - "movl %4,%%edi\n\t" + "movl %%ebx,%%edi\n\t" "movl %%edx,%%ecx\n\t" "repne; scasb\n\t" "jne 1b\n\t" @@ -777,7 +1310,7 @@ strpbrk (__const char *__s, __const char *__accept) "xorl %0,%0\n" "3:" : "=S" (__res) - : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept) + : "a" (0), "c" (0xffffffff), "0" (__s), "b" (__accept) : "ax", "cx", "dx", "di", "cc"); return __res; } @@ -785,63 +1318,138 @@ strpbrk (__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) \ + (__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))) + +# if 0 +/* Please note that this function need not handle NEEDLEs with a + length shorter than two. */ __STRING_INLINE char * -strstr (__const char *__haystack, __const char *__needle) +__strstr_cg (__const char *__haystack, __const char __needle[], + size_t __needle_len) { register char *__res; + int __mem; __asm__ __volatile__ - ("pushl %%ebx\n\t" - "cld\n\t" \ - "movl %4,%%edi\n\t" + ("movl %%ebx,%1\n\t" + "movl %%ecx,%%ebx\n" + "cld\n" \ + "1:\n\t" + "movl %%edx,%%edi\n\t" + "movl %%esi,%%eax\n\t" + "movl %%ebx,%%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:\n\t" + "movl %1,%%ebx" + : "=a" (__res), "=m" (__mem) + : "c" (__needle_len), "S" (__haystack), "d" (__needle), "1" (__mem) + : "cx", "di", "si", "cc"); + return __res; +} + +__STRING_INLINE char * +__strstr_g (__const char *__haystack, __const char *__needle) +{ + register char *__res; + int __mem; + __asm__ __volatile__ + ("movl %2,%%edi\n\t" + "cld\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" + "movl %%ebx,%1\n\t" "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */ "movl %%ecx,%%ebx\n" "1:\n\t" - "movl %4,%%edi\n\t" + "movl %%edx,%%edi\n\t" "movl %%esi,%%eax\n\t" "movl %%ebx,%%ecx\n\t" "repe; cmpsb\n\t" "je 2f\n\t" /* also works for empty string, see above */ - "xchgl %%eax,%%esi\n\t" - "incl %%esi\n\t" - "cmpb $0,-1(%%eax)\n\t" + "cmpb $0,-1(%%esi)\n\t" + "leal 1(%%eax),%%esi\n\t" "jne 1b\n\t" - "xorl %%eax,%%eax\n\t" + "xorl %%eax,%%eax\n" "2:\n\t" - "popl %%ebx" - : "=a" (__res) - : "0" (0), "c" (0xffffffff), "S" (__haystack), "g" (__needle) + "movl %1,%%ebx" + : "=a" (__res), "=&m" (__mem) + : "0" (0), "c" (0xffffffff), "S" (__haystack), "d" (__needle), "1" (__mem) : "cx", "di", "si", "cc"); return __res; } +# 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 (__const char *__haystack, __const char *__needle) +__strstr_cg (__const char *__haystack, __const char __needle[], + size_t __needle_len) { register char *__res; __asm__ __volatile__ - ("cld\n\t" \ - "movl %4,%%edi\n\t" + ("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) +{ + register char *__res; + __asm__ __volatile__ + ("movl %1,%%edi\n\t" + "cld\n\t" "repne; scasb\n\t" "notl %%ecx\n\t" "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */ "movl %%ecx,%%edx\n" "1:\n\t" - "movl %4,%%edi\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" /* also works for empty string, see above */ - "xchgl %%eax,%%esi\n\t" - "incl %%esi\n\t" - "cmpb $0,-1(%%eax)\n\t" + "cmpb $0,-1(%%esi)\n\t" + "leal 1(%%eax),%%esi\n\t" "jne 1b\n\t" - "xorl %%eax,%%eax\n\t" + "xorl %%eax,%%eax\n" "2:" : "=a" (__res) - : "0" (0), "c" (0xffffffff), "S" (__haystack), "g" (__needle) + : "0" (0), "c" (0xffffffff), "S" (__haystack), "b" (__needle) : "cx", "dx", "di", "si", "cc"); return __res; } |