mirror of https://gitee.com/openkylin/linux.git
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
#ifndef _M68KNOMMU_STRING_H_
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#define _M68KNOMMU_STRING_H_
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#ifdef __KERNEL__ /* only set these up for kernel code */
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#include <asm/setup.h>
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#include <asm/page.h>
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#define __HAVE_ARCH_STRCPY
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static inline char * strcpy(char * dest,const char *src)
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{
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char *xdest = dest;
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__asm__ __volatile__
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("1:\tmoveb %1@+,%0@+\n\t"
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"jne 1b"
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: "=a" (dest), "=a" (src)
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: "0" (dest), "1" (src) : "memory");
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return xdest;
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}
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#define __HAVE_ARCH_STRNCPY
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static inline char * strncpy(char *dest, const char *src, size_t n)
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{
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char *xdest = dest;
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if (n == 0)
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return xdest;
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__asm__ __volatile__
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("1:\tmoveb %1@+,%0@+\n\t"
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"jeq 2f\n\t"
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"subql #1,%2\n\t"
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"jne 1b\n\t"
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"2:"
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: "=a" (dest), "=a" (src), "=d" (n)
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: "0" (dest), "1" (src), "2" (n)
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: "memory");
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return xdest;
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}
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#ifndef CONFIG_COLDFIRE
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#define __HAVE_ARCH_STRCMP
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static inline int strcmp(const char * cs,const char * ct)
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{
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char __res;
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__asm__
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("1:\tmoveb %0@+,%2\n\t" /* get *cs */
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"cmpb %1@+,%2\n\t" /* compare a byte */
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"jne 2f\n\t" /* not equal, break out */
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"tstb %2\n\t" /* at end of cs? */
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"jne 1b\n\t" /* no, keep going */
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"jra 3f\n\t" /* strings are equal */
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"2:\tsubb %1@-,%2\n\t" /* *cs - *ct */
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"3:"
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: "=a" (cs), "=a" (ct), "=d" (__res)
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: "0" (cs), "1" (ct));
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return __res;
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}
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#define __HAVE_ARCH_STRNCMP
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static inline int strncmp(const char * cs,const char * ct,size_t count)
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{
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char __res;
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if (!count)
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return 0;
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__asm__
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("1:\tmovb %0@+,%3\n\t" /* get *cs */
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"cmpb %1@+,%3\n\t" /* compare a byte */
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"jne 3f\n\t" /* not equal, break out */
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"tstb %3\n\t" /* at end of cs? */
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"jeq 4f\n\t" /* yes, all done */
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"subql #1,%2\n\t" /* no, adjust count */
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"jne 1b\n\t" /* more to do, keep going */
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"2:\tmoveq #0,%3\n\t" /* strings are equal */
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"jra 4f\n\t"
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"3:\tsubb %1@-,%3\n\t" /* *cs - *ct */
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"4:"
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: "=a" (cs), "=a" (ct), "=d" (count), "=d" (__res)
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: "0" (cs), "1" (ct), "2" (count));
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return __res;
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}
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#endif /* CONFIG_COLDFIRE */
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#define __HAVE_ARCH_MEMSET
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extern void * memset(void * s, int c, size_t count);
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#define __HAVE_ARCH_MEMCPY
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extern void * memcpy(void *d, const void *s, size_t count);
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#else /* KERNEL */
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/*
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* let user libraries deal with these,
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* IMHO the kernel has no place defining these functions for user apps
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*/
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#define __HAVE_ARCH_STRCPY 1
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#define __HAVE_ARCH_STRNCPY 1
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#define __HAVE_ARCH_STRCAT 1
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#define __HAVE_ARCH_STRNCAT 1
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#define __HAVE_ARCH_STRCMP 1
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#define __HAVE_ARCH_STRNCMP 1
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#define __HAVE_ARCH_STRNICMP 1
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#define __HAVE_ARCH_STRCHR 1
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#define __HAVE_ARCH_STRRCHR 1
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#define __HAVE_ARCH_STRSTR 1
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#define __HAVE_ARCH_STRLEN 1
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#define __HAVE_ARCH_STRNLEN 1
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#define __HAVE_ARCH_MEMSET 1
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#define __HAVE_ARCH_MEMCPY 1
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#define __HAVE_ARCH_MEMMOVE 1
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#define __HAVE_ARCH_MEMSCAN 1
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#define __HAVE_ARCH_MEMCMP 1
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#define __HAVE_ARCH_MEMCHR 1
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#define __HAVE_ARCH_STRTOK 1
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#endif /* KERNEL */
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#endif /* _M68K_STRING_H_ */
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