[deliverable/linux.git] / include / asm-m68k / string.h

#ifndef _M68K_STRING_H_
#define _M68K_STRING_H_

#include <linux/types.h>
#include <linux/compiler.h>

static inline size_t __kernel_strlen(const char *s)
{
	const char *sc;

	for (sc = s; *sc++; )
		;
	return sc - s - 1;
}

static inline char *__kernel_strcpy(char *dest, const char *src)
{
	char *xdest = dest;

	asm volatile ("\n"
		"1:	move.b	(%1)+,(%0)+\n"
		"	jne	1b"
		: "+a" (dest), "+a" (src)
		: : "memory");
	return xdest;
}

#ifndef __IN_STRING_C

#define __HAVE_ARCH_STRLEN
#define strlen(s)	(__builtin_constant_p(s) ?	\
			 __builtin_strlen(s) :		\
			 __kernel_strlen(s))

#define __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char *s, size_t count)
{
	const char *sc = s;

	asm volatile ("\n"
		"1:     subq.l  #1,%1\n"
		"       jcs     2f\n"
		"       tst.b   (%0)+\n"
		"       jne     1b\n"
		"       subq.l  #1,%0\n"
		"2:"
		: "+a" (sc), "+d" (count));
	return sc - s;
}

#define __HAVE_ARCH_STRCPY
#if __GNUC__ >= 4
#define strcpy(d, s)	(__builtin_constant_p(s) &&	\
			 __builtin_strlen(s) <= 32 ?	\
			 __builtin_strcpy(d, s) :	\
			 __kernel_strcpy(d, s))
#else
#define strcpy(d, s)	__kernel_strcpy(d, s)
#endif

#define __HAVE_ARCH_STRNCPY
static inline char *strncpy(char *dest, const char *src, size_t n)
{
	char *xdest = dest;

	asm volatile ("\n"
		"	jra	2f\n"
		"1:	move.b	(%1),(%0)+\n"
		"	jeq	2f\n"
		"	addq.l	#1,%1\n"
		"2:	subq.l	#1,%2\n"
		"	jcc	1b\n"
		: "+a" (dest), "+a" (src), "+d" (n)
		: : "memory");
	return xdest;
}

#define __HAVE_ARCH_STRCAT
#define strcat(d, s)	({			\
	char *__d = (d);			\
	strcpy(__d + strlen(__d), (s));		\
})

#define __HAVE_ARCH_STRCHR
static inline char *strchr(const char *s, int c)
{
	char sc, ch = c;

	for (; (sc = *s++) != ch; ) {
		if (!sc)
			return NULL;
	}
	return (char *)s - 1;
}

#define __HAVE_ARCH_STRCMP
static inline int strcmp(const char *cs, const char *ct)
{
	char res;

	asm ("\n"
		"1:	move.b	(%0)+,%2\n"	/* get *cs */
		"	cmp.b	(%1)+,%2\n"	/* compare a byte */
		"	jne	2f\n"		/* not equal, break out */
		"	tst.b	%2\n"		/* at end of cs? */
		"	jne	1b\n"		/* no, keep going */
		"	jra	3f\n"		/* strings are equal */
		"2:	sub.b	-(%1),%2\n"	/* *cs - *ct */
		"3:"
		: "+a" (cs), "+a" (ct), "=d" (res));
	return res;
}

#define __HAVE_ARCH_MEMSET
extern void *memset(void *, int, __kernel_size_t);
#define memset(d, c, n) __builtin_memset(d, c, n)

#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *, const void *, __kernel_size_t);
#define memcpy(d, s, n) __builtin_memcpy(d, s, n)

#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *, const void *, __kernel_size_t);

#define __HAVE_ARCH_MEMCMP
extern int memcmp(const void *, const void *, __kernel_size_t);
#define memcmp(d, s, n) __builtin_memcmp(d, s, n)

#endif

#endif /* _M68K_STRING_H_ */
Commit	Line	Data
1da177e4 LT	1	#ifndef _M68K_STRING_H_
	2	#define _M68K_STRING_H_
	3
d6359fd7 RZ	4	#include <linux/types.h>
d6359fd7 RZ	5	#include <linux/compiler.h>
1da177e4	6
d6359fd7	7	static inline size_t __kernel_strlen(const char *s)
1da177e4	8	{
d6359fd7	9	const char *sc;
1da177e4	10
d6359fd7 RZ	11	for (sc = s; *sc++; )
	12	;
	13	return sc - s - 1;
1da177e4 LT	14	}
1da177e4 LT	15
d6359fd7	16	static inline char __kernel_strcpy(char dest, const char *src)
1da177e4	17	{
d6359fd7 RZ	18	char *xdest = dest;
	19
	20	asm volatile ("\n"
	21	"1: move.b (%1)+,(%0)+\n"
	22	" jne 1b"
	23	: "+a" (dest), "+a" (src)
	24	: : "memory");
	25	return xdest;
1da177e4 LT	26	}
1da177e4 LT	27
d6359fd7	28	#ifndef __IN_STRING_C
1da177e4	29
d6359fd7 RZ	30	#define __HAVE_ARCH_STRLEN
	31	#define strlen(s) (__builtin_constant_p(s) ? \
	32	__builtin_strlen(s) : \
	33	__kernel_strlen(s))
1da177e4	34
d6359fd7 RZ	35	#define __HAVE_ARCH_STRNLEN
d6359fd7 RZ	36	static inline size_t strnlen(const char *s, size_t count)
1da177e4	37	{
d6359fd7 RZ	38	const char *sc = s;
	39
	40	asm volatile ("\n"
	41	"1: subq.l #1,%1\n"
	42	" jcs 2f\n"
	43	" tst.b (%0)+\n"
	44	" jne 1b\n"
	45	" subq.l #1,%0\n"
	46	"2:"
	47	: "+a" (sc), "+d" (count));
	48	return sc - s;
1da177e4 LT	49	}
1da177e4 LT	50
d6359fd7 RZ	51	#define __HAVE_ARCH_STRCPY
	52	#if __GNUC__ >= 4
	53	#define strcpy(d, s) (__builtin_constant_p(s) && \
	54	__builtin_strlen(s) <= 32 ? \
	55	__builtin_strcpy(d, s) : \
	56	__kernel_strcpy(d, s))
	57	#else
	58	#define strcpy(d, s) __kernel_strcpy(d, s)
	59	#endif
1da177e4	60
d6359fd7 RZ	61	#define __HAVE_ARCH_STRNCPY
d6359fd7 RZ	62	static inline char strncpy(char dest, const char *src, size_t n)
1da177e4	63	{
d6359fd7 RZ	64	char *xdest = dest;
	65
	66	asm volatile ("\n"
	67	" jra 2f\n"
	68	"1: move.b (%1),(%0)+\n"
	69	" jeq 2f\n"
	70	" addq.l #1,%1\n"
	71	"2: subq.l #1,%2\n"
	72	" jcc 1b\n"
	73	: "+a" (dest), "+a" (src), "+d" (n)
	74	: : "memory");
	75	return xdest;
1da177e4 LT	76	}
1da177e4 LT	77
d6359fd7 RZ	78	#define __HAVE_ARCH_STRCAT
	79	#define strcat(d, s) ({ \
	80	char *__d = (d); \
	81	strcpy(__d + strlen(__d), (s)); \
	82	})
1da177e4	83
d6359fd7 RZ	84	#define __HAVE_ARCH_STRCHR
d6359fd7 RZ	85	static inline char strchr(const char s, int c)
1da177e4	86	{
d6359fd7 RZ	87	char sc, ch = c;
	88
	89	for (; (sc = *s++) != ch; ) {
	90	if (!sc)
	91	return NULL;
	92	}
	93	return (char *)s - 1;
1da177e4 LT	94	}
1da177e4 LT	95
d6359fd7 RZ	96	#define __HAVE_ARCH_STRCMP
d6359fd7 RZ	97	static inline int strcmp(const char cs, const char ct)
1da177e4	98	{
d6359fd7 RZ	99	char res;
	100
	101	asm ("\n"
	102	"1: move.b (%0)+,%2\n" /* get cs /
	103	" cmp.b (%1)+,%2\n" /* compare a byte */
	104	" jne 2f\n" /* not equal, break out */
	105	" tst.b %2\n" /* at end of cs? */
	106	" jne 1b\n" /* no, keep going */
	107	" jra 3f\n" /* strings are equal */
	108	"2: sub.b -(%1),%2\n" /* cs - ct */
	109	"3:"
	110	: "+a" (cs), "+a" (ct), "=d" (res));
	111	return res;
1da177e4 LT	112	}
	113
	114	#define __HAVE_ARCH_MEMSET
072dffda RZ	115	extern void memset(void , int, __kernel_size_t);
072dffda RZ	116	#define memset(d, c, n) __builtin_memset(d, c, n)
1da177e4 LT	117
1da177e4 LT	118	#define __HAVE_ARCH_MEMCPY
072dffda RZ	119	extern void memcpy(void , const void *, __kernel_size_t);
072dffda RZ	120	#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
1da177e4 LT	121
1da177e4 LT	122	#define __HAVE_ARCH_MEMMOVE
072dffda	123	extern void memmove(void , const void *, __kernel_size_t);
1da177e4 LT	124
1da177e4 LT	125	#define __HAVE_ARCH_MEMCMP
072dffda RZ	126	extern int memcmp(const void , const void , __kernel_size_t);
072dffda RZ	127	#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
1da177e4	128
d6359fd7 RZ	129	#endif
d6359fd7 RZ	130
1da177e4	131	#endif /* _M68K_STRING_H_ */