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locks.h (compare_and_swap): Fix multilib support.

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2002-09-30  Bo Thorsen  <bo@suse.de>

	* sysdep/x86-64/locks.h (compare_and_swap): Fix multilib support.

From-SVN: r57682
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Bo Thorsen 2002-10-01 09:02:08 +00:00 • committed by Bo Thorsen
parent fac3fa281d
commit 73bff06445
2 changed files with 11 additions and 0 deletions
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4
libjava/ChangeLog
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@ -1,3 +1,7 @@
2002-09-30 Bo Thorsen <bo@suse.de>
* sysdep/x86-64/locks.h (compare_and_swap): Fix multilib support.
2002-09-30 Tom Tromey <tromey@redhat.com> 2002-09-30 Tom Tromey <tromey@redhat.com>
* java/io/ObjectInputStream.java (resolveProxyClass): New method * java/io/ObjectInputStream.java (resolveProxyClass): New method

7
libjava/sysdep/x86-64/locks.h
View file

@ -24,10 +24,17 @@ inline static bool
compare_and_swap(volatile obj_addr_t *addr, obj_addr_t old, obj_addr_t new_val) compare_and_swap(volatile obj_addr_t *addr, obj_addr_t old, obj_addr_t new_val)
{ {
char result; char result;
#ifdef __x86_64__
__asm__ __volatile__("lock; cmpxchgq %2, %0; setz %1" __asm__ __volatile__("lock; cmpxchgq %2, %0; setz %1"
: "+m"(*(addr)), "=q"(result) : "+m"(*(addr)), "=q"(result)
: "r" (new_val), "a"(old) : "r" (new_val), "a"(old)
: "memory"); : "memory");
#else
__asm__ __volatile__("lock; cmpxchgl %2, %0; setz %1"
: "+m"(*(addr)), "=q"(result)
: "r" (new_val), "a"(old)
: "memory");
#endif
return (bool) result; return (bool) result;
} }