x86-64 fixes: Part 1

[Andreas Jaeger]

Ok, here's my current version of patches for AMD's x86-64
architecture.  I'll send the patches via separate emails.

The appended patch fixes gmp-impl.h for x86-64:
- Adds BSWAP_LIMP implementation
- Defines _GMP_IEEE_FLOATS

Andreas

diff -ur gmp-4.1/gmp-impl.h /suse/aj/gmp-4.1/gmp-impl.h
--- gmp-4.1/gmp-impl.h	Wed May  8 23:50:17 2002
+++ /suse/aj/gmp-4.1/gmp-impl.h	Sun Sep 29 16:09:44 2002
@@ -2230,6 +2230,14 @@
   } while (0)
 #endif
 
+#if defined (__GNUC__) && ! defined (NO_ASM)            \
+  && defined (__x86_64__) && BITS_PER_MP_LIMB == 64
+#define BSWAP_LIMB(dst, src)                    \
+  do {                                          \
+    asm ("bswapq %0" : "=r" (dst) : "0" (src));  \
+  } while (0)
+#endif /* x86_64 */
+
 #if ! defined (BSWAP_LIMB)
 #if BITS_PER_MP_LIMB == 8
 #define BSWAP_LIMB(dst, src)            \
@@ -2478,6 +2486,7 @@
  || defined (__clipper__)						\
  || defined (__cris)							\
  || defined (__i386__)							\
+ || defined (__x86_64__)						\
  || defined (__i860__)							\
  || defined (__i960__)							\
  || defined (__ia64)							\

-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj