winsup/cygwin/winbase.h

   1 #include_next "winbase.h"
   2
   3 #ifndef _WINBASE2_H
   4 #define _WINBASE2_H
   5
   6 extern __inline__ long ilockincr (long *m)
   7 {
   8   register int __res;
   9   __asm__ __volatile__ ("\n\
  10         movl    $1,%0\n\
  11         lock    xadd %0,(%1)\n\
  12         inc     %0\n\
  13         ": "=a" (__res), "=r" (m): "1" (m));
  14   return __res;
  15 }
  16 extern __inline__ long ilockdecr (long *m)
  17 {
  18   register int __res;
  19   __asm__ __volatile__ ("\n\
  20         movl    $0xffffffff,%0\n\
  21         lock    xadd %0,(%1)\n\
  22         dec     %0\n\
  23         ": "=a" (__res), "=r" (m): "1" (m));
  24   return __res;
  25 }
  26 extern __inline__ long ilockexch (long *t, long v)
  27 {
  28   register int __res;
  29   __asm__ __volatile__ ("\n\
  30         movl    (%2),%0\n\
  31 1:      lock    cmpxchgl %3,(%1)\n\
  32         jne 1b\n\
  33         ": "=a" (__res), "=c" (t): "1" (t), "d" (v));
  34   return __res;
  35 }
  36
  37 #undef InterlockedIncrement
  38 #define InterlockedIncrement ilockincr
  39 #undef InterlockedDecrement
  40 #define InterlockedDecrement ilockdecr
  41 #undef InterlockedExchange
  42 #define InterlockedExchange ilockexch
  43
  44 extern long tls_ix;
  45 extern char * volatile *__stackbase __asm__ ("%fs:4");
  46
  47 extern __inline__ DWORD
  48 my_tlsalloc ()
  49 {
  50   DWORD n = ilockdecr (&tls_ix);
  51   __stackbase[tls_ix] = NULL;
  52   return n;
  53 }
  54
  55 extern __inline__ BOOL
  56 my_tlssetvalue (DWORD ix, void *val)
  57 {
  58   __stackbase[ix] = (char *) val;
  59   return 1;
  60 }
  61
  62 extern __inline__ void *
  63 my_tlsgetvalue (DWORD ix)
  64 {
  65   return __stackbase[ix];
  66 }
  67
  68 extern __inline__ BOOL
  69 my_tlsfree (DWORD ix)
  70 {
  71   /* nothing for now */
  72   return 1;
  73 }
  74
  75 #undef TlsAlloc
  76 #define TlsAlloc my_tlsalloc
  77 #undef TlsGetValue
  78 #define TlsGetValue my_tlsgetvalue
  79 #undef TlsSetValue
  80 #define TlsSetValue my_tlssetvalue
  81 #undef TlsFree
  82 #define TlsFree my_tlsfree
  83 #endif /*_WINBASE2_H*/