/* -----------------------------------------------------------------------------
- * $Id: StgTypes.h,v 1.6 1999/07/15 16:11:29 panne Exp $
+ * $Id: StgTypes.h,v 1.11 2000/04/13 15:37:11 panne Exp $
*
* (c) The GHC Team, 1998-1999
*
StgInt Signed version of StgWord
StgAddr Generic address type
-
+ * WARNING: Keep this file and HsFFI.h in synch!
*
* ---------------------------------------------------------------------------*/
/*
* First, platform-dependent definitions of size-specific integers.
* Assume for now that the int type is 32 bits.
+ * NOTE: Synch the following definitions with MachDeps.h!
* ToDo: move these into a platform-dependent file.
*/
typedef signed int StgInt32;
typedef unsigned int StgWord32;
#else
-#error GHC untested on this architecture: sizeof(unisgned int) != 4
+#error GHC untested on this architecture: sizeof(unsigned int) != 4
#endif
/* This #define controls whether we need to support long longs on a particular
*/
typedef StgWord8 StgChar;
-
+typedef int StgBool;
/*
* If a double fits in an StgWord, don't bother using floats.
*/
typedef struct StgTSO_* StgTSOPtr;
-typedef void * StgForeignPtr;
+typedef void* StgForeignPtr;
typedef StgInt StgStackOffset; /* offset in words! */
/* Stable Pointers: A stable pointer is represented as an index into
* the stable pointer table in the low 24 bits with a weight in the
* upper 8 bits.
+ * SUP: StgStablePtr used to be a synonym for StgWord, but stable pointers
+ * are guaranteed to be void* on the C-side, so we have to do some occasional
+ * casting. Size is not a matter, because StgWord is always the same size as
+ * a void*.
*/
-typedef StgWord StgStablePtr;
+typedef void* StgStablePtr;
#define STABLEPTR_WEIGHT_MASK ((StgWord)0xff << ((sizeof(StgWord)-1) * BITS_PER_BYTE))
#define STABLEPTR_WEIGHT_SHIFT (BITS_IN(StgWord) - 8)
#define stgCast(ty,e) ((ty)(e))
-#endif STGTYPES_H
-
+#endif /* STGTYPES_H */