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$NetBSD: patch-bb,v 1.7 2010/07/12 16:49:22 tnn Exp $
# make sure the inline assembler code works on the same word size as
# the C/C++ code on sparc64 when compiling for 64bit
# https://bugzilla.mozilla.org/show_bug.cgi?id=550271
--- mozilla/js/src/jslock.cpp.orig 2010-02-27 02:32:31.000000000 +0000
+++ mozilla/js/src/jslock.cpp
@@ -159,6 +159,7 @@ NativeCompareAndSwap(jsword *w, jsword o
{
unsigned int res;
+#if JS_BITS_PER_WORD == 32
__asm__ __volatile__ (
"stbar\n"
"cas [%1],%2,%3\n"
@@ -169,6 +170,18 @@ NativeCompareAndSwap(jsword *w, jsword o
"1:"
: "=r" (res)
: "r" (w), "r" (ov), "r" (nv));
+#else
+ __asm__ __volatile__ (
+ "stbar\n"
+ "casx [%1],%2,%3\n"
+ "cmp %2,%3\n"
+ "be,a 1f\n"
+ "mov 1,%0\n"
+ "mov 0,%0\n"
+ "1:"
+ : "=r" (res)
+ : "r" (w), "r" (ov), "r" (nv));
+#endif
return (int)res;
}
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