NSObject asm fix

[David Chisnall]

The code setting the floating point exception mask in NSObject is  
incorrect.  It works coincidentally with GCC because GCC (at least, in  
current versions) adds an extra load and so the argument becomes  
%eax.  If it is an indirect address then this code will not work due  
to the extra brackets (it will complain about unexpected characters in  
the assembler).  Attached is a fix.

David

Index: NSObject.m
===================================================================
--- NSObject.m  (revision 27773)
+++ NSObject.m  (working copy)
@@ -1138,9 +1138,9 @@
       {
        volatile short cw;

-       __asm__ volatile ("fstcw (%0)" : : "g" (&cw));
+       __asm__ volatile ("fstcw %0" : : "g" (&cw));
        cw |= 1; /* Mask 'invalid' exception */
-       __asm__ volatile ("fldcw (%0)" : : "g" (&cw));
+       __asm__ volatile ("fldcw %0" : : "g" (&cw));
       }
 #endif