newlib-cygwin/winsup/cygwin/winbase.h

91 lines
1.7 KiB
C

#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)
{
register int __res;
__asm__ __volatile__ ("\n\
movl $1,%0\n\
lock xadd %0,(%1)\n\
inc %0\n\
": "=a" (__res), "=r" (m): "1" (m));
return __res;
}
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));
return __res;
}
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));
return __res;
}
#undef InterlockedIncrement
#define InterlockedIncrement ilockincr
#undef InterlockedDecrement
#define InterlockedDecrement ilockdecr
#undef InterlockedExchange
#define InterlockedExchange ilockexch
extern long tls_ix;
extern char * volatile *__stackbase __asm__ ("%fs:4");
extern __inline__ DWORD
my_tlsalloc ()
{
DWORD n = ilockdecr (&tls_ix);
__stackbase[tls_ix] = NULL;
return n;
}
extern __inline__ BOOL
my_tlssetvalue (DWORD ix, void *val)
{
__stackbase[ix] = (char *) val;
return 1;
}
extern __inline__ void *
my_tlsgetvalue (DWORD ix)
{
return __stackbase[ix];
}
extern __inline__ BOOL
my_tlsfree (DWORD ix)
{
/* nothing for now */
return 1;
}
#undef TlsAlloc
#define TlsAlloc my_tlsalloc
#undef TlsGetValue
#define TlsGetValue my_tlsgetvalue
#undef TlsSetValue
#define TlsSetValue my_tlssetvalue
#undef TlsFree
#define TlsFree my_tlsfree
#endif /*_WINBASE2_H*/