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src/os_cpu/solaris_sparc/vm/atomic_solaris_sparc.hpp
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rev 13457 : imported patch solaris_sparc
rev 13472 : imported patch coleen_review1
@@ -23,12 +23,10 @@
*/
#ifndef OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP
#define OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP
-#include "runtime/os.hpp"
-
// Implementation of class atomic
inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
@@ -62,14 +60,10 @@
// omits the instruction set check.
extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
-extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value);
-extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
-extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value);
-
extern "C" jint _Atomic_add32(jint inc, volatile jint* dest);
extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
inline jint Atomic::add (jint add_value, volatile jint* dest) {
@@ -95,24 +89,42 @@
inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
}
-
-inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) {
- return _Atomic_cas32(exchange_value, dest, compare_value);
-}
-
-inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) {
- // Return 64 bit value in %o0
- return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value);
-}
-
-inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
- return _Atomic_cas64(exchange_value, dest, compare_value);
-}
-
-inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) {
- return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order);
+// No direct support for cmpxchg of bytes; emulate using int.
+template<>
+struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
+
+template<>
+template<typename T>
+inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
+ T volatile* dest,
+ T compare_value,
+ cmpxchg_memory_order order) const {
+ STATIC_ASSERT(4 == sizeof(T));
+ T rv;
+ __asm__ volatile(
+ " cas [%2], %3, %0"
+ : "=r" (rv)
+ : "0" (exchange_value), "r" (dest), "r" (compare_value)
+ : "memory");
+ return rv;
+}
+
+template<>
+template<typename T>
+inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
+ T volatile* dest,
+ T compare_value,
+ cmpxchg_memory_order order) const {
+ STATIC_ASSERT(8 == sizeof(T));
+ T rv;
+ __asm__ volatile(
+ " casx [%2], %3, %0"
+ : "=r" (rv)
+ : "0" (exchange_value), "r" (dest), "r" (compare_value)
+ : "memory");
+ return rv;
}
#endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP
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