Release 4.14 arch/m68k/include/asm/string.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _M68K_STRING_H_

#define _M68K_STRING_H_

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


#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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Greg Ungerer
30
100.00%
1
100.00%
Total
30
100.00%
1
100.00%


#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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Greg Ungerer
32
100.00%
1
100.00%
Total
32
100.00%
1
100.00%

#ifndef CONFIG_COLDFIRE

#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;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Greg Ungerer
38
100.00%
1
100.00%
Total
38
100.00%
1
100.00%

#endif /* CONFIG_COLDFIRE */


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


#define memcmp(d, s, n) __builtin_memcmp(d, s, n)


#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)

#endif /* _M68K_STRING_H_ */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Greg Ungerer
213
98.61%
2
50.00%
Sam Ravnborg
2
0.93%
1
25.00%
Greg Kroah-Hartman
1
0.46%
1
25.00%
Total
216
100.00%
4
100.00%
Directory: arch/m68k/include/asm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.