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/*
* include/asm-s390/string.h
*
* S390 version
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
*/
#ifndef _S390_STRING_H_
#define _S390_STRING_H_
#ifdef __KERNEL__
#ifndef _LINUX_TYPES_H
#include <linux/types.h>
#endif
#define __HAVE_ARCH_MEMCHR
#define __HAVE_ARCH_MEMCPY
#define __HAVE_ARCH_MEMSET
#define __HAVE_ARCH_STRCAT
#define __HAVE_ARCH_STRCMP
#define __HAVE_ARCH_STRCPY
#define __HAVE_ARCH_STRLEN
#define __HAVE_ARCH_STRNCPY
#undef __HAVE_ARCH_MEMMOVE
#undef __HAVE_ARCH_STRNICMP
#undef __HAVE_ARCH_STRNCAT
#undef __HAVE_ARCH_STRNCMP
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_STRRCHR
#undef __HAVE_ARCH_STRNLEN
#undef __HAVE_ARCH_STRSPN
#undef __HAVE_ARCH_STRPBRK
#undef __HAVE_ARCH_STRTOK
#undef __HAVE_ARCH_BCOPY
#undef __HAVE_ARCH_MEMCMP
#undef __HAVE_ARCH_MEMSCAN
#undef __HAVE_ARCH_STRSTR
extern void *memset(void *, int, size_t);
extern void *memcpy(void *, const void *, size_t);
extern void *memmove(void *, const void *, size_t);
extern char *strncpy(char *, const char *, size_t);
extern int strcmp(const char *,const char *);
static inline void * memchr(const void * cs,int c,size_t count)
{
void *ptr;
__asm__ __volatile__ (" lgr 0,%2\n"
" lgr 1,%1\n"
" la %0,0(%3,%1)\n"
"0: srst %0,1\n"
" jo 0b\n"
" brc 13,1f\n"
" slgr %0,%0\n"
"1:"
: "=&a" (ptr) : "a" (cs), "d" (c), "d" (count)
: "cc", "0", "1" );
return ptr;
}
static __inline__ char *strcpy(char *dest, const char *src)
{
char *tmp = dest;
__asm__ __volatile__ (" slgr 0,0\n"
"0: mvst %0,%1\n"
" jo 0b"
: "+&a" (dest), "+&a" (src) :
: "cc", "memory", "0" );
return tmp;
}
static __inline__ size_t strlen(const char *s)
{
size_t len;
__asm__ __volatile__ (" slgr 0,0\n"
" lgr %0,%1\n"
"0: srst 0,%0\n"
" jo 0b\n"
" lgr %0,0\n"
" sgr %0,%1"
: "=&a" (len) : "a" (s)
: "cc", "0" );
return len;
}
static __inline__ char *strcat(char *dest, const char *src)
{
char *tmp = dest;
__asm__ __volatile__ (" slgr 0,0\n"
"0: srst 0,%0\n"
" jo 0b\n"
" lgr %0,0\n"
" slgr 0,0\n"
"1: mvst %0,%1\n"
" jo 1b"
: "+&a" (dest), "+&a" (src) :
: "cc", "memory", "0" );
return tmp;
}
extern void *alloca(size_t);
#endif /* __KERNEL__ */
#endif /* __S390_STRING_H_ */
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