[tkreuzer] 46599: merge from amd64 branch: 38333 [INTRIN_X86] #define _alloca() to __builtin_alloca() on amd64 46388 [INTRIN_X86] - Add __stosq, __movsq, _bittest64

Author: tkreuzer
Date: Tue Mar 30 18:25:51 2010
New Revision: 46599

URL: http://svn.reactos.org/svn/reactos?rev=46599&view=rev
Log:
merge from amd64 branch:

38333
[INTRIN_X86]
#define _alloca() to __builtin_alloca() on amd64

46388
[INTRIN_X86]
- Add __stosq, __movsq, _bittest64

Modified:
    trunk/reactos/include/crt/mingw32/intrin_x86.h

Modified: trunk/reactos/include/crt/mingw32/intrin_x86.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/crt/mingw32/intrin_...
==============================================================================
--- trunk/reactos/include/crt/mingw32/intrin_x86.h [iso-8859-1] (original)
+++ trunk/reactos/include/crt/mingw32/intrin_x86.h [iso-8859-1] Tue Mar 30 18:25:51 2010
@@ -74,6 +74,10 @@
 #define _AddressOfReturnAddress() (&(((void **)(__builtin_frame_address(0)))[1]))
 /* TODO: __getcallerseflags but how??? */

+/* Maybe the same for x86? */
+#ifdef _x86_64
+#define _alloca(s) __builtin_alloca(s)
+#endif

/*** Atomic operations ***/

@@ -565,6 +569,18 @@
    );
 }

+#ifdef _M_AMD64
+__INTRIN_INLINE void __stosq(unsigned __int64 * Dest, const unsigned __int64 Data, size_t Count)
+{
+	__asm__ __volatile__
+	(
+		"rep; stosq" :
+		[Dest] "=D" (Dest), [Count] "=c" (Count) :
+		"[Dest]" (Dest), "a" (Data), "[Count]" (Count)
+	);
+}
+#endif
+
 __INTRIN_INLINE void __movsb(unsigned char * Destination, const unsigned char * Source, size_t Count)
 {
    __asm__ __volatile__
@@ -594,6 +610,18 @@
    	"[Destination]" (Destination), "[Source]" (Source), "[Count]" (Count)
    );
 }
+
+#ifdef _M_AMD64
+__INTRIN_INLINE void __movsq(unsigned long * Destination, const unsigned long * Source, size_t Count)
+{
+	__asm__ __volatile__
+	(
+		"rep; movsq" :
+		[Destination] "=D" (Destination), [Source] "=S" (Source), [Count] "=c" (Count) :
+		"[Destination]" (Destination), "[Source]" (Source), "[Count]" (Count)
+	);
+}
+#endif

#if defined(_M_AMD64)
 /*** GS segment addressing ***/
@@ -786,6 +814,20 @@

return retval;
 }
+
+#ifdef _M_AMD64
+__INTRIN_INLINE unsigned char _bittest64(const __int64 * const a, const __int64 b)
+{
+	unsigned char retval;
+
+	if(__builtin_constant_p(b))
+		__asm__("bt %[b], %[a]; setb %b[retval]" : [retval] "=q" (retval) : [a] "mr" (*(a + (b / 64))), [b] "Ir" (b % 64));
+	else
+		__asm__("bt %[b], %[a]; setb %b[retval]" : [retval] "=q" (retval) : [a] "mr" (*a), [b] "r" (b));
+
+	return retval;
+}
+#endif

__INTRIN_INLINE unsigned char _bittestandcomplement(long * const a, const long b)
 {