target-alpha: Enable softfloat.

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

configure

@@ -2448,7 +2448,7 @@ if test ! -z "$gdb_xml_files" ; then
 fi
 
 case "$target_arch2" in
-  arm|armeb|m68k|microblaze|mips|mipsel|mipsn32|mipsn32el|mips64|mips64el|ppc|ppc64|ppc64abi32|ppcemb|s390x|sparc|sparc64|sparc32plus)
+  alpha|arm|armeb|m68k|microblaze|mips|mipsel|mipsn32|mipsn32el|mips64|mips64el|ppc|ppc64|ppc64abi32|ppcemb|s390x|sparc|sparc64|sparc32plus)
     echo "CONFIG_SOFTFLOAT=y" >> $config_target_mak
     ;;
   *)

fpu/softfloat-specialize.h

@@ -61,7 +61,7 @@ typedef struct {
 *----------------------------------------------------------------------------*/
 #if defined(TARGET_SPARC)
 #define float32_default_nan make_float32(0x7FFFFFFF)
-#elif defined(TARGET_POWERPC) || defined(TARGET_ARM)
+#elif defined(TARGET_POWERPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
 #define float32_default_nan make_float32(0x7FC00000)
 #elif defined(TARGET_HPPA)
 #define float32_default_nan make_float32(0x7FA00000)
@@ -189,7 +189,7 @@ static float32 propagateFloat32NaN( float32 a, float32 b STATUS_PARAM)
 *----------------------------------------------------------------------------*/
 #if defined(TARGET_SPARC)
 #define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF ))
-#elif defined(TARGET_POWERPC) || defined(TARGET_ARM)
+#elif defined(TARGET_POWERPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
 #define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 ))
 #elif defined(TARGET_HPPA)
 #define float64_default_nan make_float64(LIT64( 0x7FF4000000000000 ))