45
46 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
47 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
48 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
49
50
51 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; }
52 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; }
53 inline jlong Atomic::load(const volatile jlong* src) { return *src; }
54
55
56 // This is the interface to the atomic instructions in solaris_sparc.il.
57 // It's very messy because we need to support v8 and these instructions
58 // are illegal there. When sparc v8 is dropped, we can drop out lots of
59 // this code. Also compiler2 does not support v8 so the conditional code
60 // omits the instruction set check.
61
62 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
63 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
64
65 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest);
66 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
67
68
69 inline jint Atomic::add (jint add_value, volatile jint* dest) {
70 return _Atomic_add32(add_value, dest);
71 }
72
73 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
74 return _Atomic_add64(add_value, dest);
75 }
76
77 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
78 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
79 }
80
81
82 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
83 return _Atomic_swap32(exchange_value, dest);
84 }
85
86 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
87 return _Atomic_swap64(exchange_value, dest);
88 }
89
90 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
91 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
92 }
93
94 // No direct support for cmpxchg of bytes; emulate using int.
95 template<>
96 struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
97
98 template<>
99 template<typename T>
100 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
|
45
46 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
47 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
48 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
49
50
51 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; }
52 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; }
53 inline jlong Atomic::load(const volatile jlong* src) { return *src; }
54
55
56 // This is the interface to the atomic instructions in solaris_sparc.il.
57 // It's very messy because we need to support v8 and these instructions
58 // are illegal there. When sparc v8 is dropped, we can drop out lots of
59 // this code. Also compiler2 does not support v8 so the conditional code
60 // omits the instruction set check.
61
62 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
63 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
64
65 // Implement ADD using a CAS loop.
66 template<size_t byte_size>
67 struct Atomic::PlatformAdd VALUE_OBJ_CLASS_SPEC {
68 template<typename I, typename D>
69 inline D operator()(I add_value, D volatile* dest) const {
70 D old_value = *dest;
71 while (true) {
72 D new_value = old_value + add_value;
73 D result = cmpxchg(new_value, dest, old_value);
74 if (result == old_value) break;
75 old_value = result;
76 }
77 return old_value + add_value;
78 }
79 };
80
81 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
82 return _Atomic_swap32(exchange_value, dest);
83 }
84
85 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
86 return _Atomic_swap64(exchange_value, dest);
87 }
88
89 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
90 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
91 }
92
93 // No direct support for cmpxchg of bytes; emulate using int.
94 template<>
95 struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
96
97 template<>
98 template<typename T>
99 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
|