Bug in PPC version of __L4_msb/lsb

[Peter Bruin]

Hi,

There are two small bugs in the PPC version of __L4_msb and __L4_lsb; here's a
patch to fix them.

Thanks,
Peter


2004-08-02  Peter Bruin  <address@hidden>

        * libl4/powerpc/l4/bits/math.h (__L4_msb): Count leading zeros of
        `data' instead of `data & -data'.
        (__L4_lsb): Call __L4_msb instead of __l4_msb.  Remove unused
        variable `lsb'.


Index: libl4/powerpc/l4/bits/math.h
===================================================================
RCS file: /cvsroot/hurd/hurd-l4/libl4/powerpc/l4/bits/math.h,v
retrieving revision 1.3
diff -u -r1.3 math.h
--- libl4/powerpc/l4/bits/math.h        16 Mar 2004 03:34:03 -0000      1.3
+++ libl4/powerpc/l4/bits/math.h        1 Aug 2004 22:26:31 -0000
@@ -34,7 +34,7 @@
   /* Count the leading zeros.  */
   asm ("cntlzw %[msb], %[data]"
        : [msb] "=r" (msb)
-       : [data] "r" (data & -data));
+       : [data] "r" (data));
 
   return 32 - msb;
 }
@@ -45,8 +45,6 @@
 _L4_attribute_always_inline _L4_attribute_const
 __L4_lsb (_L4_word_t data)
 {
-  _L4_word_t lsb;
-
   /* x & -x clears all bits in the word except the LSB set.  */
-  return __l4_msb (data & -data);
+  return __L4_msb (data & -data);
 }