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src/os_cpu/bsd_x86/vm/atomic_bsd_x86.inline.hpp
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rev 11110 : 8155949: Support relaxed semantics in cmpxchg
Reviewed-by:
Contributed-by: HORII@jp.ibm.com, mdoerr
*** 87,106 ****
inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
}
#define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
! inline jbyte Atomic::cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value) {
int mp = os::is_MP();
__asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
: "=a" (exchange_value)
: "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
return exchange_value;
}
! inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
int mp = os::is_MP();
__asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
: "=a" (exchange_value)
: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
--- 87,106 ----
inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
}
#define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
! inline jbyte Atomic::cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value, cmpxchg_memory_order order) {
int mp = os::is_MP();
__asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
: "=a" (exchange_value)
: "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
return exchange_value;
}
! inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) {
int mp = os::is_MP();
__asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
: "=a" (exchange_value)
: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
*** 147,171 ****
: "0" (exchange_value), "r" (dest)
: "memory");
return exchange_value;
}
! inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
bool mp = os::is_MP();
__asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
: "=a" (exchange_value)
: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
return exchange_value;
}
! inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
! return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
}
! inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
! return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
}
inline jlong Atomic::load(volatile jlong* src) { return *src; }
#else // !AMD64
--- 147,171 ----
: "0" (exchange_value), "r" (dest)
: "memory");
return exchange_value;
}
! inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) {
bool mp = os::is_MP();
__asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
: "=a" (exchange_value)
: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
: "cc", "memory");
return exchange_value;
}
! inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
! return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
}
! inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) {
! return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order);
}
inline jlong Atomic::load(volatile jlong* src) { return *src; }
#else // !AMD64
*** 195,214 ****
// defined in bsd_x86.s
jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
void _Atomic_move_long(volatile jlong* src, volatile jlong* dst);
}
! inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP());
}
! inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
! return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
}
! inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
! return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
}
inline jlong Atomic::load(volatile jlong* src) {
volatile jlong dest;
_Atomic_move_long(src, &dest);
--- 195,214 ----
// defined in bsd_x86.s
jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
void _Atomic_move_long(volatile jlong* src, volatile jlong* dst);
}
! inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) {
return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP());
}
! inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
! return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order);
}
! inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) {
! return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order);
}
inline jlong Atomic::load(volatile jlong* src) {
volatile jlong dest;
_Atomic_move_long(src, &dest);
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