From 4d029f3940b1f91b5ee06ccd724c90245c9d52cc Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 28 Nov 2001 00:06:35 +0000
Subject: * cygwin.din (ualarm): New export. * dcrt0.cc (_dll_crt0): Add
 experimental tls storage declaration. (dll_crt0): Ditto. * debug.cc
 (thread_stub): Ditto. * thread.cc: Minor cleanup. (__pthread_create): Add
 experimental tls storage declaration. * miscfuncs.cc: Define tls index. *
 winsup.h: Declare experimental tls storage. * window.cc (alarm): Use old
 timer return from setitimer. (ualarm): New function.

---
 winsup/cygwin/winbase.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 winsup/cygwin/winbase.h

(limited to 'winsup/cygwin/winbase.h')

diff --git a/winsup/cygwin/winbase.h b/winsup/cygwin/winbase.h
new file mode 100644
index 000000000..801badc44
--- /dev/null
+++ b/winsup/cygwin/winbase.h
@@ -0,0 +1,84 @@
+#include_next "winbase.h"
+
+#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 __inline__ DWORD
+my_tlsalloc ()
+{
+  return (DWORD) ilockincr (&tls_ix);
+}
+
+extern __inline__ BOOL
+my_tlssetvalue (DWORD ix, void *val)
+{
+  char **stackbase;
+  __asm__ volatile ("movl %%fs:4,%0": "=g" (stackbase));
+  stackbase[-ix] = (char *) val;
+  return 1;
+}
+
+extern __inline__ void *
+my_tlsgetvalue (DWORD ix)
+{
+  char **stackbase;
+  __asm__ volatile ("movl %%fs:4,%0": "=g" (stackbase));
+  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*/
-- 
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