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* winbase.h: Turn on inline versions of Interlocked* by default. 

* winbase.h: Fixup inline asm functions.  Add ilockcmpexch.
This commit is contained in:
Christopher Faylor 2002-12-14 05:06:59 +00:00
parent 8bce0d723c
commit ba88622498
3 changed files with 45 additions and 23 deletions
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8
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,11 @@
2002-12-14 Christopher Faylor <cgf@redhat.com>
* winbase.h: Turn on inline versions of Interlocked* by default.
2002-12-14 Gary R. Van Sickle <g.r.vansickle@worldnet.att.net>
* winbase.h: Fixup inline asm functions. Add ilockcmpexch.
2002-12-13 Christopher Faylor <cgf@redhat.com>
Throughout, change fhandler_*::read and fhandler_*::raw_read to void

18
winsup/cygwin/string.h
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@ -24,15 +24,15 @@ strchr (const char *s, int c)
{
register char * res;
__asm__ __volatile__ ("\
movb %%al,%%ah\n\
1: movb (%1),%%al\n\
cmpb %%ah,%%al\n\
je 2f\n\
incl %1\n\
testb %%al,%%al\n\
jne 1b\n\
xorl %1,%1\n\
2: movl %1,%0\n\
movb %%al,%%ah\n\
1: movb (%1),%%al\n\
cmpb %%ah,%%al\n\
je 2f\n\
incl %1\n\
testb %%al,%%al\n\
jne 1b\n\
xorl %1,%1\n\
2: movl %1,%0\n\
":"=a" (res), "=r" (s)
:"0" (c), "1" (s));
return res;

42
winsup/cygwin/winbase.h
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@ -1,43 +1,50 @@
#include_next "winbase.h"
#ifdef EXPCGF
#define DECLARE_TLS_STORAGE char **tls[4096] __attribute__ ((unused))
#else
#define DECLARE_TLS_STORAGE do {} while (0)
#define _WINBASE2_H
#endif
#ifndef _WINBASE2_H
#define _WINBASE2_H
extern __inline__ long ilockincr (long *m)
extern __inline__ long
ilockincr (long *m)
{
register int __res;
__asm__ __volatile__ ("\n\
movl $1,%0\n\
lock xadd %0,(%1)\n\
inc %0\n\
": "=a" (__res), "=r" (m): "1" (m));
": "=a" (__res), "=q" (m): "1" (m));
return __res;
}
extern __inline__ long ilockdecr (long *m)
extern __inline__ long
ilockdecr (long *m)
{
register int __res;
__asm__ __volatile__ ("\n\
movl $0xffffffff,%0\n\
lock xadd %0,(%1)\n\
dec %0\n\
": "=a" (__res), "=r" (m): "1" (m));
": "=a" (__res), "=q" (m): "1" (m));
return __res;
}
extern __inline__ long ilockexch (long *t, long v)
extern __inline__ long
ilockexch (long *t, long v)
{
register int __res;
__asm__ __volatile__ ("\n\
movl (%2),%0\n\
1: lock cmpxchgl %3,(%1)\n\
jne 1b\n\
": "=a" (__res), "=c" (t): "1" (t), "d" (v));
": "=a" (__res), "=q" (t): "1" (t), "q" (v), "0" (*t));
return __res;
}
extern __inline__ long
ilockcmpexch (long *t, long v, long c)
{
register int __res;
__asm__ __volatile__ ("\n\
lock cmpxchgl %3,(%1)\n\
": "=a" (__res), "=q" (t) : "1" (t), "q" (v), "0" (c));
return __res;
}
@ -47,7 +54,13 @@ extern __inline__ long ilockexch (long *t, long v)
#define InterlockedDecrement ilockdecr
#undef InterlockedExchange
#define InterlockedExchange ilockexch
#undef InterlockedCompareExchange
#define InterlockedCompareExchange ilockcmpexch
#ifndef EXPCGf
#define DECLARE_TLS_STORAGE do {} while (0)
#else
#define DECLARE_TLS_STORAGE char **tls[4096] __attribute__ ((unused))
extern long tls_ix;
extern char * volatile *__stackbase __asm__ ("%fs:4");
@ -87,4 +100,5 @@ my_tlsfree (DWORD ix)
#define TlsSetValue my_tlssetvalue
#undef TlsFree
#define TlsFree my_tlsfree
#endif /*EXPCGF*/
#endif /*_WINBASE2_H*/