diff options
Diffstat (limited to 'arch/blackfin/include/asm/string.h')
-rw-r--r-- | arch/blackfin/include/asm/string.h | 113 |
1 files changed, 4 insertions, 109 deletions
diff --git a/arch/blackfin/include/asm/string.h b/arch/blackfin/include/asm/string.h index d7f0ccb418c..423c099aa98 100644 --- a/arch/blackfin/include/asm/string.h +++ b/arch/blackfin/include/asm/string.h @@ -12,121 +12,16 @@ #ifdef __KERNEL__ /* only set these up for kernel code */ #define __HAVE_ARCH_STRCPY -extern inline char *strcpy(char *dest, const char *src) -{ - char *xdest = dest; - char temp = 0; - - __asm__ __volatile__ ( - "1:" - "%2 = B [%1++] (Z);" - "B [%0++] = %2;" - "CC = %2;" - "if cc jump 1b (bp);" - : "+&a" (dest), "+&a" (src), "=&d" (temp) - : - : "memory", "CC"); - - return xdest; -} +extern char *strcpy(char *dest, const char *src); #define __HAVE_ARCH_STRNCPY -extern inline char *strncpy(char *dest, const char *src, size_t n) -{ - char *xdest = dest; - char temp = 0; - - if (n == 0) - return xdest; - - __asm__ __volatile__ ( - "1:" - "%3 = B [%1++] (Z);" - "B [%0++] = %3;" - "CC = %3;" - "if ! cc jump 2f;" - "%2 += -1;" - "CC = %2 == 0;" - "if ! cc jump 1b (bp);" - "jump 4f;" - "2:" - /* if src is shorter than n, we need to null pad bytes now */ - "%3 = 0;" - "3:" - "%2 += -1;" - "CC = %2 == 0;" - "if cc jump 4f;" - "B [%0++] = %3;" - "jump 3b;" - "4:" - : "+&a" (dest), "+&a" (src), "+&da" (n), "=&d" (temp) - : - : "memory", "CC"); - - return xdest; -} +extern char *strncpy(char *dest, const char *src, size_t n); #define __HAVE_ARCH_STRCMP -extern inline int strcmp(const char *cs, const char *ct) -{ - /* need to use int's here so the char's in the assembly don't get - * sign extended incorrectly when we don't want them to be - */ - int __res1, __res2; - - __asm__ __volatile__ ( - "1:" - "%2 = B[%0++] (Z);" /* get *cs */ - "%3 = B[%1++] (Z);" /* get *ct */ - "CC = %2 == %3;" /* compare a byte */ - "if ! cc jump 2f;" /* not equal, break out */ - "CC = %2;" /* at end of cs? */ - "if cc jump 1b (bp);" /* no, keep going */ - "jump.s 3f;" /* strings are equal */ - "2:" - "%2 = %2 - %3;" /* *cs - *ct */ - "3:" - : "+&a" (cs), "+&a" (ct), "=&d" (__res1), "=&d" (__res2) - : - : "memory", "CC"); - - return __res1; -} +extern int strcmp(const char *cs, const char *ct); #define __HAVE_ARCH_STRNCMP -extern inline int strncmp(const char *cs, const char *ct, size_t count) -{ - /* need to use int's here so the char's in the assembly don't get - * sign extended incorrectly when we don't want them to be - */ - int __res1, __res2; - - if (!count) - return 0; - - __asm__ __volatile__ ( - "1:" - "%3 = B[%0++] (Z);" /* get *cs */ - "%4 = B[%1++] (Z);" /* get *ct */ - "CC = %3 == %4;" /* compare a byte */ - "if ! cc jump 3f;" /* not equal, break out */ - "CC = %3;" /* at end of cs? */ - "if ! cc jump 4f;" /* yes, all done */ - "%2 += -1;" /* no, adjust count */ - "CC = %2 == 0;" - "if ! cc jump 1b;" /* more to do, keep going */ - "2:" - "%3 = 0;" /* strings are equal */ - "jump.s 4f;" - "3:" - "%3 = %3 - %4;" /* *cs - *ct */ - "4:" - : "+&a" (cs), "+&a" (ct), "+&da" (count), "=&d" (__res1), "=&d" (__res2) - : - : "memory", "CC"); - - return __res1; -} +extern int strncmp(const char *cs, const char *ct, size_t count); #define __HAVE_ARCH_MEMSET extern void *memset(void *s, int c, size_t count); |