/* -----------------------------------------------------------------------------
- * $Id: Stg.h,v 1.64 2004/09/02 12:45:25 simonmar Exp $
*
* (c) The GHC Team, 1998-2004
*
#endif
#if IN_STG_CODE == 0
-# ifndef NO_REGS
-# define NO_REGS /* don't define fixed registers */
-# endif
+# define NO_GLOBAL_REG_DECLS /* don't define fixed registers */
#endif
/* Configuration */
# error "Don't know how to inline functions with your C compiler."
#endif
+/*
+ * GCC attributes
+ */
+#if defined(__GNUC__)
+#define GNU_ATTRIBUTE(at) __attribute__((at))
+#else
+#define GNU_ATTRIBUTE(at)
+#endif
+
+#if __GNUC__ >= 3
+#define GNUC3_ATTRIBUTE(at) __attribute__((at))
+#else
+#define GNUC3_ATTRIBUTE(at)
+#endif
+
+#define STG_UNUSED GNUC3_ATTRIBUTE(__unused__)
+
/* -----------------------------------------------------------------------------
Global type definitions
-------------------------------------------------------------------------- */
typedef StgInt64 LI_;
typedef StgWord64 LW_;
-#define IF_(f) static F_ f(void)
+#define IF_(f) static F_ GNUC3_ATTRIBUTE(used) f(void)
#define FN_(f) F_ f(void)
#define EF_(f) extern F_ f(void)
* independently - unfortunately this code isn't writable in C, we
* have to use inline assembler.
*/
-#if sparc_TARGET_ARCH
+#if sparc_HOST_ARCH
#define ASSIGN_DBL(dst0,src) \
{ StgPtr dst = (StgPtr)(dst0); \
"m" (((P_)(src))[0]), "m" (((P_)(src))[1])); d; \
} )
-#else /* ! sparc_TARGET_ARCH */
+#else /* ! sparc_HOST_ARCH */
INLINE_HEADER void ASSIGN_DBL (W_ [], StgDouble);
INLINE_HEADER StgDouble PK_DBL (W_ []);
return(y.d);
}
-#endif /* ! sparc_TARGET_ARCH */
+#endif /* ! sparc_HOST_ARCH */
#endif /* ALIGNMENT_DOUBLE > ALIGNMENT_UNSIGNED_INT */
#endif
/* -----------------------------------------------------------------------------
+ Write-combining store
+ -------------------------------------------------------------------------- */
+
+INLINE_HEADER void
+wcStore (StgPtr p, StgWord w)
+{
+#ifdef x86_64_HOST_ARCH
+ __asm__(
+ "movnti\t%1, %0"
+ : "=m" (*p)
+ : "r" (w)
+ );
+#else
+ *p = w;
+#endif
+}
+
+/* -----------------------------------------------------------------------------
Integer multiply with overflow
-------------------------------------------------------------------------- */
#else
-#define HALF_INT (((I_)1) << (BITS_IN (I_) / 2))
+/* Approximate version when we don't have long arithmetic (on 64-bit archs) */
-#define stg_abs(a) (((I_)(a)) < 0 ? -((I_)(a)) : ((I_)(a)))
+#define HALF_POS_INT (((I_)1) << (BITS_IN (I_) / 2))
+#define HALF_NEG_INT (-HALF_POS_INT)
#define mulIntMayOflo(a,b) \
({ \
I_ c; \
- if (stg_abs(a) >= HALF_INT || \
- stg_abs(b) >= HALF_INT) { \
+ if ((I_)a <= HALF_NEG_INT || a >= HALF_POS_INT \
+ || (I_)b <= HALF_NEG_INT || b >= HALF_POS_INT) {\
c = 1; \
} else { \
c = 0; \