mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 13:38:40 +00:00
94c12cc7d1
Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
|
|
* 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 /* inline & arch function */
|
|
#define __HAVE_ARCH_MEMCMP /* arch function */
|
|
#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
|
|
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
|
|
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
|
|
#define __HAVE_ARCH_STRCAT /* inline & arch function */
|
|
#define __HAVE_ARCH_STRCMP /* arch function */
|
|
#define __HAVE_ARCH_STRCPY /* inline & arch function */
|
|
#define __HAVE_ARCH_STRLCAT /* arch function */
|
|
#define __HAVE_ARCH_STRLCPY /* arch function */
|
|
#define __HAVE_ARCH_STRLEN /* inline & arch function */
|
|
#define __HAVE_ARCH_STRNCAT /* arch function */
|
|
#define __HAVE_ARCH_STRNCPY /* arch function */
|
|
#define __HAVE_ARCH_STRNLEN /* inline & arch function */
|
|
#define __HAVE_ARCH_STRRCHR /* arch function */
|
|
#define __HAVE_ARCH_STRSTR /* arch function */
|
|
|
|
/* Prototypes for non-inlined arch strings functions. */
|
|
extern int memcmp(const void *, const void *, size_t);
|
|
extern void *memcpy(void *, const void *, size_t);
|
|
extern void *memset(void *, int, size_t);
|
|
extern int strcmp(const char *,const char *);
|
|
extern size_t strlcat(char *, const char *, size_t);
|
|
extern size_t strlcpy(char *, const char *, size_t);
|
|
extern char *strncat(char *, const char *, size_t);
|
|
extern char *strncpy(char *, const char *, size_t);
|
|
extern char *strrchr(const char *, int);
|
|
extern char *strstr(const char *, const char *);
|
|
|
|
#undef __HAVE_ARCH_MEMMOVE
|
|
#undef __HAVE_ARCH_STRCHR
|
|
#undef __HAVE_ARCH_STRNCHR
|
|
#undef __HAVE_ARCH_STRNCMP
|
|
#undef __HAVE_ARCH_STRNICMP
|
|
#undef __HAVE_ARCH_STRPBRK
|
|
#undef __HAVE_ARCH_STRSEP
|
|
#undef __HAVE_ARCH_STRSPN
|
|
|
|
#if !defined(IN_ARCH_STRING_C)
|
|
|
|
static inline void *memchr(const void * s, int c, size_t n)
|
|
{
|
|
register int r0 asm("0") = (char) c;
|
|
const void *ret = s + n;
|
|
|
|
asm volatile(
|
|
"0: srst %0,%1\n"
|
|
" jo 0b\n"
|
|
" jl 1f\n"
|
|
" la %0,0\n"
|
|
"1:"
|
|
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
|
|
return (void *) ret;
|
|
}
|
|
|
|
static inline void *memscan(void *s, int c, size_t n)
|
|
{
|
|
register int r0 asm("0") = (char) c;
|
|
const void *ret = s + n;
|
|
|
|
asm volatile(
|
|
"0: srst %0,%1\n"
|
|
" jo 0b\n"
|
|
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
|
|
return (void *) ret;
|
|
}
|
|
|
|
static inline char *strcat(char *dst, const char *src)
|
|
{
|
|
register int r0 asm("0") = 0;
|
|
unsigned long dummy;
|
|
char *ret = dst;
|
|
|
|
asm volatile(
|
|
"0: srst %0,%1\n"
|
|
" jo 0b\n"
|
|
"1: mvst %0,%2\n"
|
|
" jo 1b"
|
|
: "=&a" (dummy), "+a" (dst), "+a" (src)
|
|
: "d" (r0), "0" (0) : "cc", "memory" );
|
|
return ret;
|
|
}
|
|
|
|
static inline char *strcpy(char *dst, const char *src)
|
|
{
|
|
register int r0 asm("0") = 0;
|
|
char *ret = dst;
|
|
|
|
asm volatile(
|
|
"0: mvst %0,%1\n"
|
|
" jo 0b"
|
|
: "+&a" (dst), "+&a" (src) : "d" (r0)
|
|
: "cc", "memory");
|
|
return ret;
|
|
}
|
|
|
|
static inline size_t strlen(const char *s)
|
|
{
|
|
register unsigned long r0 asm("0") = 0;
|
|
const char *tmp = s;
|
|
|
|
asm volatile(
|
|
"0: srst %0,%1\n"
|
|
" jo 0b"
|
|
: "+d" (r0), "+a" (tmp) : : "cc");
|
|
return r0 - (unsigned long) s;
|
|
}
|
|
|
|
static inline size_t strnlen(const char * s, size_t n)
|
|
{
|
|
register int r0 asm("0") = 0;
|
|
const char *tmp = s;
|
|
const char *end = s + n;
|
|
|
|
asm volatile(
|
|
"0: srst %0,%1\n"
|
|
" jo 0b"
|
|
: "+a" (end), "+a" (tmp) : "d" (r0) : "cc");
|
|
return end - s;
|
|
}
|
|
|
|
#endif /* !IN_ARCH_STRING_C */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __S390_STRING_H_ */
|