76 //
77 // - release orders Store|Store, (maps to lwsync)
78 // Load|Store
79 // - acquire orders Load|Store, (maps to lwsync)
80 // Load|Load
81 // - fence orders Store|Store, (maps to sync)
82 // Load|Store,
83 // Load|Load,
84 // Store|Load
85 //
86
87 #define strasm_sync "\n sync \n"
88 #define strasm_lwsync "\n lwsync \n"
89 #define strasm_isync "\n isync \n"
90 #define strasm_release strasm_lwsync
91 #define strasm_acquire strasm_lwsync
92 #define strasm_fence strasm_sync
93 #define strasm_nobarrier ""
94 #define strasm_nobarrier_clobber_memory ""
95
96 inline jint Atomic::add (jint add_value, volatile jint* dest) {
97
98 unsigned int result;
99
100 __asm__ __volatile__ (
101 strasm_lwsync
102 "1: lwarx %0, 0, %2 \n"
103 " add %0, %0, %1 \n"
104 " stwcx. %0, 0, %2 \n"
105 " bne- 1b \n"
106 strasm_isync
107 : /*%0*/"=&r" (result)
108 : /*%1*/"r" (add_value), /*%2*/"r" (dest)
109 : "cc", "memory" );
110
111 return (jint) result;
112 }
113
114
115 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
116
117 long result;
118
119 __asm__ __volatile__ (
120 strasm_lwsync
121 "1: ldarx %0, 0, %2 \n"
122 " add %0, %0, %1 \n"
123 " stdcx. %0, 0, %2 \n"
124 " bne- 1b \n"
125 strasm_isync
126 : /*%0*/"=&r" (result)
127 : /*%1*/"r" (add_value), /*%2*/"r" (dest)
128 : "cc", "memory" );
129
130 return (intptr_t) result;
131 }
132
133 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
134 return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
135 }
136
137
138 inline void Atomic::inc (volatile jint* dest) {
139
140 unsigned int temp;
141
142 __asm__ __volatile__ (
143 strasm_nobarrier
144 "1: lwarx %0, 0, %2 \n"
145 " addic %0, %0, 1 \n"
146 " stwcx. %0, 0, %2 \n"
147 " bne- 1b \n"
148 strasm_nobarrier
149 : /*%0*/"=&r" (temp), "=m" (*dest)
150 : /*%2*/"r" (dest), "m" (*dest)
151 : "cc" strasm_nobarrier_clobber_memory);
152
153 }
154
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76 //
77 // - release orders Store|Store, (maps to lwsync)
78 // Load|Store
79 // - acquire orders Load|Store, (maps to lwsync)
80 // Load|Load
81 // - fence orders Store|Store, (maps to sync)
82 // Load|Store,
83 // Load|Load,
84 // Store|Load
85 //
86
87 #define strasm_sync "\n sync \n"
88 #define strasm_lwsync "\n lwsync \n"
89 #define strasm_isync "\n isync \n"
90 #define strasm_release strasm_lwsync
91 #define strasm_acquire strasm_lwsync
92 #define strasm_fence strasm_sync
93 #define strasm_nobarrier ""
94 #define strasm_nobarrier_clobber_memory ""
95
96 template<size_t byte_size>
97 struct Atomic::PlatformAdd
98 : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
99 {
100 template<typename I, typename D>
101 D add_and_fetch(I add_value, D volatile* dest) const;
102 };
103
104 template<>
105 template<typename I, typename D>
106 inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const {
107 STATIC_CAST(4 == sizeof(I));
108 STATIC_CAST(4 == sizeof(D));
109
110 D result;
111
112 __asm__ __volatile__ (
113 strasm_lwsync
114 "1: lwarx %0, 0, %2 \n"
115 " add %0, %0, %1 \n"
116 " stwcx. %0, 0, %2 \n"
117 " bne- 1b \n"
118 strasm_isync
119 : /*%0*/"=&r" (result)
120 : /*%1*/"r" (add_value), /*%2*/"r" (dest)
121 : "cc", "memory" );
122
123 return result;
124 }
125
126
127 template<>
128 template<typename I, typename D>
129 inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const {
130 STATIC_CAST(8 == sizeof(I));
131 STATIC_CAST(8 == sizeof(D));
132
133 D result;
134
135 __asm__ __volatile__ (
136 strasm_lwsync
137 "1: ldarx %0, 0, %2 \n"
138 " add %0, %0, %1 \n"
139 " stdcx. %0, 0, %2 \n"
140 " bne- 1b \n"
141 strasm_isync
142 : /*%0*/"=&r" (result)
143 : /*%1*/"r" (add_value), /*%2*/"r" (dest)
144 : "cc", "memory" );
145
146 return result;
147 }
148
149
150 inline void Atomic::inc (volatile jint* dest) {
151
152 unsigned int temp;
153
154 __asm__ __volatile__ (
155 strasm_nobarrier
156 "1: lwarx %0, 0, %2 \n"
157 " addic %0, %0, 1 \n"
158 " stwcx. %0, 0, %2 \n"
159 " bne- 1b \n"
160 strasm_nobarrier
161 : /*%0*/"=&r" (temp), "=m" (*dest)
162 : /*%2*/"r" (dest), "m" (*dest)
163 : "cc" strasm_nobarrier_clobber_memory);
164
165 }
166
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