Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Browse files
Browse the repository at this point in the history
Update.
* sysdeps/s390/bits/string.h: New unified 31/64 bit string.h. * sysdeps/s390/s390-32/bits/string.h: Remove. * sysdeps/s390/s390-64/bits/string.h: Remove. * sysdeps/s390/s390-32/strcmp.S: New file. * sysdeps/s390/s390-64/strcmp.S: New file. 2001-03-27 Martin Schwidefsky <schwidefsky@de.ibm.com>
- Loading branch information
Ulrich Drepper
committed
Mar 28, 2001
1 parent
397fa45
commit 0a51f0a
Showing
6 changed files
with
321 additions
and
307 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,231 @@ | ||
/* Optimized, inlined string functions. S/390 version. | ||
Copyright (C) 2000, 2001 Free Software Foundation, Inc. | ||
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). | ||
This file is part of the GNU C Library. | ||
The GNU C Library is free software; you can redistribute it and/or | ||
modify it under the terms of the GNU Library General Public License as | ||
published by the Free Software Foundation; either version 2 of the | ||
License, or (at your option) any later version. | ||
The GNU C Library is distributed in the hope that it will be useful, | ||
but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
Library General Public License for more details. | ||
You should have received a copy of the GNU Library General Public | ||
License along with the GNU C Library; see the file COPYING.LIB. If not, | ||
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
Boston, MA 02111-1307, USA. */ | ||
|
||
#ifndef _STRING_H | ||
# error "Never use <bits/string.h> directly; include <string.h> instead." | ||
#endif | ||
|
||
/* The s390 processors can access unaligned multi-byte variables. */ | ||
#define _STRING_ARCH_unaligned 1 | ||
|
||
/* We only provide optimizations if the user selects them and if | ||
GNU CC is used. */ | ||
#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \ | ||
&& defined __GNUC__ && __GNUC__ >= 2 | ||
|
||
#ifndef __STRING_INLINE | ||
# ifdef __cplusplus | ||
# define __STRING_INLINE inline | ||
# else | ||
# define __STRING_INLINE extern __inline | ||
# endif | ||
#endif | ||
|
||
#define _HAVE_STRING_ARCH_strlen 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE size_t | ||
strlen (__const char *__str) | ||
{ | ||
char *__ptr, *__tmp; | ||
|
||
__ptr = (char *) 0; | ||
__tmp = (char *) __str; | ||
__asm__ __volatile__ (" la 0,0\n" | ||
"0: srst %0,%1\n" | ||
" jo 0b\n" | ||
: "+&a" (__ptr), "+&a" (__tmp) : | ||
: "cc", "0" ); | ||
return (size_t) (__ptr - __str); | ||
} | ||
#endif | ||
|
||
/* Copy SRC to DEST. */ | ||
#define _HAVE_STRING_ARCH_strcpy 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE char * | ||
strcpy (char *__dest, __const char *__src) | ||
{ | ||
char *tmp = __dest; | ||
|
||
__asm__ __volatile__ (" la 0,0\n" | ||
"0: mvst %0,%1\n" | ||
" jo 0b" | ||
: "+&a" (__dest), "+&a" (__src) : | ||
: "cc", "memory", "0" ); | ||
return tmp; | ||
} | ||
#endif | ||
|
||
#define _HAVE_STRING_ARCH_strncpy 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE char * | ||
strncpy (char *__dest, __const char *__src, size_t __n) | ||
{ | ||
char *__ret = __dest; | ||
char *__ptr; | ||
size_t __diff; | ||
|
||
if (__n > 0) { | ||
__diff = (size_t) (__dest - __src); | ||
__ptr = (char *) __src; | ||
__asm__ __volatile__ (" j 1f\n" | ||
"0: la %0,1(%0)\n" | ||
"1: icm 0,1,0(%0)\n" | ||
" stc 0,0(%2,%0)\n" | ||
" jz 3f\n" | ||
#if defined(__s390x__) | ||
" brctg %1,0b\n" | ||
#else | ||
" brct %1,0b\n" | ||
#endif | ||
" j 4f\n" | ||
"2: la %0,1(%0)\n" | ||
" stc 0,0(%2,%0)\n" | ||
#if defined(__s390x__) | ||
"3: brctg %1,2b\n" | ||
#else | ||
"3: brct %1,2b\n" | ||
#endif | ||
"4:" | ||
: "+&a" (__ptr), "+&a" (__n) : "a" (__diff) | ||
: "cc", "0" ); | ||
} | ||
return __ret; | ||
} | ||
#endif | ||
|
||
/* Append SRC onto DEST. */ | ||
#define _HAVE_STRING_ARCH_strcat 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE char * | ||
strcat(char *__dest, const char *__src) | ||
{ | ||
char *__ret = __dest; | ||
char *__ptr, *__tmp; | ||
|
||
/* Move __ptr to the end of __dest. */ | ||
__ptr = (char *) 0; | ||
__tmp = __dest; | ||
__asm__ __volatile__ (" la 0,0\n" | ||
"0: srst %0,%1\n" | ||
" jo 0b\n" | ||
: "+&a" (__ptr), "+&a" (__tmp) : | ||
: "cc", "0" ); | ||
|
||
/* Now do the copy. */ | ||
__asm__ __volatile__ (" la 0,0\n" | ||
"0: mvst %0,%1\n" | ||
" jo 0b" | ||
: "+&a" (__ptr), "+&a" (__src) : | ||
: "cc", "0" ); | ||
return __ret; | ||
} | ||
#endif | ||
|
||
/* Append no more than N characters from SRC onto DEST. */ | ||
#define _HAVE_STRING_ARCH_strncat 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE char * | ||
strncat (char *__dest, __const char *__src, size_t __n) | ||
{ | ||
char *__ret = __dest; | ||
char *__ptr, *__tmp; | ||
size_t __diff; | ||
|
||
if (__n > 0) { | ||
/* Move __ptr to the end of __dest. */ | ||
__ptr = (char *) 0; | ||
__tmp = __dest; | ||
__asm__ __volatile__ (" la 0,0\n" | ||
"0: srst %0,%1\n" | ||
" jo 0b\n" | ||
: "+&a" (__ptr), "+&a" (__tmp) : | ||
: "cc", "0" ); | ||
|
||
__diff = (size_t) (__ptr - __src); | ||
__tmp = (char *) __src; | ||
__asm__ __volatile__ (" j 1f\n" | ||
"0: la %0,1(%0)\n" | ||
"1: icm 0,1,0(%0)\n" | ||
" stc 0,0(%2,%0)\n" | ||
" jz 2f\n" | ||
#if defined(__s390x__) | ||
" brctg %1,0b\n" | ||
#else | ||
" brct %1,0b\n" | ||
#endif | ||
" slr 0,0\n" | ||
" stc 0,1(%2,%0)\n" | ||
"2:" | ||
: "+&a" (__tmp), "+&a" (__n) : "a" (__diff) | ||
: "cc", "0" ); | ||
|
||
} | ||
return __ret; | ||
} | ||
#endif | ||
|
||
/* Search N bytes of S for C. */ | ||
#define _HAVE_STRING_ARCH_memchr 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE void * | ||
memchr (__const void *__str, int __c, size_t __n) | ||
{ | ||
char *__ptr, *__tmp; | ||
|
||
__tmp = (char *) __str; | ||
__ptr = (char *) __tmp + __n; | ||
__asm__ __volatile__ (" lhi 0,0xff\n" | ||
" nr 0,%2\n" | ||
"0: srst %0,%1\n" | ||
" jo 0b\n" | ||
" brc 13,1f\n" | ||
" la %0,0\n" | ||
"1:" | ||
: "+&a" (__ptr), "+&a" (__tmp) : "d" (__c) | ||
: "cc", "0" ); | ||
return __ptr; | ||
} | ||
#endif | ||
|
||
/* Search N bytes of S for C. */ | ||
#define _HAVE_STRING_ARCH_memchr 1 | ||
#ifndef _FORCE_INLINES | ||
__STRING_INLINE int | ||
strcmp (__const char *__s1, __const char *__s2) | ||
{ | ||
char *__p1, *__p2; | ||
int __ret; | ||
|
||
__p1 = (char *) __s1; | ||
__p2 = (char *) __s2; | ||
__asm__ __volatile__ (" slr 0,0\n" | ||
"0: clst %1,%2\n" | ||
" jo 0b\n" | ||
" ipm %0\n" | ||
" srl %0,28" | ||
: "=d" (__ret), "+&a" (__p1), "+&a" (__p2) : | ||
: "cc", "0" ); | ||
__ret = (__ret == 0) ? 0 : (__ret == 1) ? -1 : 1; | ||
return __ret; | ||
} | ||
#endif | ||
|
||
#endif /* Use string inlines && GNU CC. */ |
This file was deleted.
Oops, something went wrong.
Oops, something went wrong.