runtime: SPARCv9 fixes for lfstack.

From Rainer Orth. From-SVN: r195534

runtime: SPARCv9 fixes for lfstack.
From Rainer Orth. From-SVN: r195534
656e11a9 · Ian Lance Taylor · 83ba4d6f · 656e11a9
Commit 656e11a9 authored Jan 29, 2013 by Ian Lance Taylor
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libgo/runtime/lfstack.c
+4 -1

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--- a/libgo/runtime/lfstack.c
+++ b/libgo/runtime/lfstack.c
@@ -19,7 +19,10 @@

 #if __SIZEOF_POINTER__ == 8 && defined(__sparc__)
 // SPARC64 uses all 64 bits of virtual addresses.  Use low-order three
-bits as ABA counter.
+// bits as ABA counter.
+#undef PTR_BITS
+#undef CNT_MASK
+#undef PTR_MASK
 #define PTR_BITS 0
 #define CNT_MASK 7
 #define PTR_MASK ((0ull-1)<<3)