Add a generic 64x64->128 multiplication op.

Use it to merge mp_msvc64 (was using MSVC _umul128 intrinsic) and
mp_asm64 (was using inline asm) into mp_word64, which calls the new
mul64x64_128 function. That function wraps any available compiler
intrinsics or CPU instructions.

1 files changed, 11 insertions, 1 deletions

diff --git a/configure.py b/configure.py
index 338af8766..87ec8aa4a 100755
--- a/configure.py
+++ b/configure.py
@@ -645,13 +645,17 @@ class ArchInfo(object):
                       ['aliases', 'submodels', 'submodel_aliases', 'isa_extensions'],
                       { 'endian': None,
                         'family': None,
-                        'unaligned': 'no'
+                        'unaligned': 'no',
+                        'wordsize': None
                         })
 
         self.submodel_aliases = force_to_dict(self.submodel_aliases)
 
         self.unaligned_ok = (1 if self.unaligned == 'ok' else 0)
 
+        if self.wordsize is not None:
+            self.wordsize = int(self.wordsize)
+
     """
     Return a list of all submodels for this arch, ordered longest
     to shortest
@@ -697,6 +701,12 @@ class ArchInfo(object):
         if self.family is not None:
             macros.append('TARGET_CPU_IS_%s_FAMILY' % (self.family.upper()))
 
+        if self.wordsize is not None:
+            macros.append('TARGET_CPU_NATIVE_WORD_SIZE %d' % (self.wordsize))
+
+            if self.wordsize == 64:
+                macros.append('TARGET_CPU_HAS_NATIVE_64BIT')
+
         macros.append('TARGET_UNALIGNED_MEMORY_ACCESS_OK %d' % (unaligned_ok))
 
         return macros