Changeset 5016

Timestamp:

Aug 23, 2006, 9:58:37 PM (18 years ago)

Author:

Gary Byers

Message:

x86-64 Darwin's math library is pretty casual about causing spurious
exceptions, so ignore them.

File:

• trunk/ccl/lisp-kernel/x86-spentry64.s (modified) (1 diff)

trunk/ccl/lisp-kernel/x86-spentry64.s

@@ -4039 +4039 @@
         __(clr %ra0)
         __(pxor %fpzero,%fpzero)
-        __(stmxcsr %rcontext:tcr.ffi_exception)
+        /* Darwin's math library seems to be pretty casual
+           about causing spurious FP exceptions */
+        __ifdef([DARWIN])
+         __(movl %arg_x_l,%rcontext:tcr.ffi_exception)
+        __else
+         __(stmxcsr %rcontext:tcr.ffi_exception)
+        __endif
         __(movq $TCR_STATE_LISP,%rcontext:tcr.valence)
         __(movq %rcontext:tcr.save_vsp,%rsp)