25 #ifndef OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP
26 #define OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP
27
28 #include "runtime/os.hpp"
29
30 // Implementation of class atomic
31
32 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
33 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
34 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
35 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
36 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
37
38 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
39 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
40 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
41 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
42 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
43
44
45 // Adding a lock prefix to an instruction on MP machine
46 #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: "
47
48 inline jint Atomic::add (jint add_value, volatile jint* dest) {
49 jint addend = add_value;
50 int mp = os::is_MP();
51 __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)"
52 : "=r" (addend)
53 : "0" (addend), "r" (dest), "r" (mp)
54 : "cc", "memory");
55 return addend + add_value;
56 }
57
58 inline void Atomic::inc (volatile jint* dest) {
59 int mp = os::is_MP();
60 __asm__ volatile (LOCK_IF_MP(%1) "addl $1,(%0)" :
61 : "r" (dest), "r" (mp) : "cc", "memory");
62 }
63
64 inline void Atomic::inc_ptr(volatile void* dest) {
65 inc_ptr((volatile intptr_t*)dest);
66 }
67
68 inline void Atomic::dec (volatile jint* dest) {
69 int mp = os::is_MP();
70 __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" :
71 : "r" (dest), "r" (mp) : "cc", "memory");
72 }
73
74 inline void Atomic::dec_ptr(volatile void* dest) {
75 dec_ptr((volatile intptr_t*)dest);
76 }
77
78 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
79 __asm__ volatile ( "xchgl (%2),%0"
80 : "=r" (exchange_value)
81 : "0" (exchange_value), "r" (dest)
82 : "memory");
83 return exchange_value;
84 }
85
86 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
87 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
88 }
89
90 #define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
91 inline jbyte Atomic::cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value, cmpxchg_memory_order order) {
92 int mp = os::is_MP();
93 __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
94 : "=a" (exchange_value)
95 : "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
96 : "cc", "memory");
97 return exchange_value;
98 }
99
100 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) {
101 int mp = os::is_MP();
102 __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
103 : "=a" (exchange_value)
104 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
105 : "cc", "memory");
106 return exchange_value;
107 }
108
109 #ifdef AMD64
110 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
111 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
112
113 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
114 intptr_t addend = add_value;
115 bool mp = os::is_MP();
116 __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)"
117 : "=r" (addend)
118 : "0" (addend), "r" (dest), "r" (mp)
119 : "cc", "memory");
120 return addend + add_value;
121 }
122
123 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
124 return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
125 }
126
127 inline void Atomic::inc_ptr(volatile intptr_t* dest) {
128 bool mp = os::is_MP();
129 __asm__ __volatile__ (LOCK_IF_MP(%1) "addq $1,(%0)"
130 :
131 : "r" (dest), "r" (mp)
132 : "cc", "memory");
133 }
134
135 inline void Atomic::dec_ptr(volatile intptr_t* dest) {
136 bool mp = os::is_MP();
137 __asm__ __volatile__ (LOCK_IF_MP(%1) "subq $1,(%0)"
138 :
139 : "r" (dest), "r" (mp)
140 : "cc", "memory");
141 }
142
143 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
144 __asm__ __volatile__ ("xchgq (%2),%0"
145 : "=r" (exchange_value)
146 : "0" (exchange_value), "r" (dest)
147 : "memory");
148 return exchange_value;
149 }
150
151 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) {
152 bool mp = os::is_MP();
153 __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
154 : "=a" (exchange_value)
155 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
156 : "cc", "memory");
157 return exchange_value;
158 }
159
160 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
161 return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
162 }
163
164 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) {
165 return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
166 }
167
168 inline jlong Atomic::load(volatile jlong* src) { return *src; }
169
170 #else // !AMD64
171
172 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
173 return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest);
174 }
175
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25 #ifndef OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP
26 #define OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP
27
28 #include "runtime/os.hpp"
29
30 // Implementation of class atomic
31
32 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
33 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
34 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
35 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
36 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
37
38 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
39 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
40 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
41 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
42 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
43
44
45 inline jint Atomic::add (jint add_value, volatile jint* dest) {
46 jint addend = add_value;
47 __asm__ volatile ( "lock xaddl %0,(%2)"
48 : "=r" (addend)
49 : "0" (addend), "r" (dest)
50 : "cc", "memory");
51 return addend + add_value;
52 }
53
54 inline void Atomic::inc (volatile jint* dest) {
55 __asm__ volatile ( "lock addl $1,(%0)" :
56 : "r" (dest) : "cc", "memory");
57 }
58
59 inline void Atomic::inc_ptr(volatile void* dest) {
60 inc_ptr((volatile intptr_t*)dest);
61 }
62
63 inline void Atomic::dec (volatile jint* dest) {
64 __asm__ volatile ( "lock subl $1,(%0)" :
65 : "r" (dest) : "cc", "memory");
66 }
67
68 inline void Atomic::dec_ptr(volatile void* dest) {
69 dec_ptr((volatile intptr_t*)dest);
70 }
71
72 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
73 __asm__ volatile ( "xchgl (%2),%0"
74 : "=r" (exchange_value)
75 : "0" (exchange_value), "r" (dest)
76 : "memory");
77 return exchange_value;
78 }
79
80 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
81 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
82 }
83
84 #define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
85 inline jbyte Atomic::cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value, cmpxchg_memory_order order) {
86 __asm__ volatile ( "lock cmpxchgb %1,(%3)"
87 : "=a" (exchange_value)
88 : "q" (exchange_value), "a" (compare_value), "r" (dest)
89 : "cc", "memory");
90 return exchange_value;
91 }
92
93 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) {
94 __asm__ volatile ( "lock cmpxchgl %1,(%3)"
95 : "=a" (exchange_value)
96 : "r" (exchange_value), "a" (compare_value), "r" (dest)
97 : "cc", "memory");
98 return exchange_value;
99 }
100
101 #ifdef AMD64
102 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
103 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
104
105 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
106 intptr_t addend = add_value;
107 __asm__ __volatile__ ( "lock xaddq %0,(%2)"
108 : "=r" (addend)
109 : "0" (addend), "r" (dest)
110 : "cc", "memory");
111 return addend + add_value;
112 }
113
114 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
115 return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
116 }
117
118 inline void Atomic::inc_ptr(volatile intptr_t* dest) {
119 __asm__ __volatile__ ( "lock addq $1,(%0)"
120 :
121 : "r" (dest), "r" (mp)
122 : "cc", "memory");
123 }
124
125 inline void Atomic::dec_ptr(volatile intptr_t* dest) {
126 __asm__ __volatile__ ( "lock subq $1,(%0)"
127 :
128 : "r" (dest)
129 : "cc", "memory");
130 }
131
132 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
133 __asm__ __volatile__ ("xchgq (%2),%0"
134 : "=r" (exchange_value)
135 : "0" (exchange_value), "r" (dest)
136 : "memory");
137 return exchange_value;
138 }
139
140 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) {
141 __asm__ __volatile__ ( "lock cmpxchgq %1,(%3)"
142 : "=a" (exchange_value)
143 : "r" (exchange_value), "a" (compare_value), "r" (dest)
144 : "cc", "memory");
145 return exchange_value;
146 }
147
148 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
149 return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
150 }
151
152 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) {
153 return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
154 }
155
156 inline jlong Atomic::load(volatile jlong* src) { return *src; }
157
158 #else // !AMD64
159
160 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
161 return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest);
162 }
163
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