Changeset 4961

Timestamp:

Aug 18, 2006, 8:50:03 AM (18 years ago)

Author:

Gary Byers

Message:

Enable FP underflow detection on x8664. Should do this on PPC as well, and should
probably offer some backward-compatible behavior for reader.

File:

• trunk/ccl/lisp-kernel/thread_manager.c (modified) (1 diff)

trunk/ccl/lisp-kernel/thread_manager.c

@@ -545 +545 @@
 #endif
 #ifdef X86
-  tcr->lisp_mxcsr = (1 << MXCSR_DM_BIT) | (1 << MXCSR_UM_BIT) | (1 << MXCSR_PM_BIT);
+  tcr->lisp_mxcsr = (1 << MXCSR_DM_BIT) | 
+#if 0
+    (1 << MXCSR_UM_BIT) | 
+#endif
+    (1 << MXCSR_PM_BIT);
 #endif
   tcr->save_allocbase = tcr->save_allocptr = (void *) VOID_ALLOCPTR;