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src/os_cpu/linux_x86/vm/atomic_linux_x86.inline.hpp

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rev 7584 : reusability maximum


  67 }
  68 
  69 inline void Atomic::dec    (volatile jint*     dest) {
  70   int mp = os::is_MP();
  71   __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" :
  72                     : "r" (dest), "r" (mp) : "cc", "memory");
  73 }
  74 
  75 inline void Atomic::dec_ptr(volatile void*     dest) {
  76   dec_ptr((volatile intptr_t*)dest);
  77 }
  78 
  79 inline jint     Atomic::xchg    (jint     exchange_value, volatile jint*     dest) {
  80   __asm__ volatile (  "xchgl (%2),%0"
  81                     : "=r" (exchange_value)
  82                     : "0" (exchange_value), "r" (dest)
  83                     : "memory");
  84   return exchange_value;
  85 }
  86 
  87 inline void*    Atomic::xchg_ptr(void*    exchange_value, volatile void*     dest) {
  88   return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  89 }
  90 
  91 #define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
  92 inline jbyte    Atomic::cmpxchg    (jbyte    exchange_value, volatile jbyte*    dest, jbyte    compare_value) {
  93   int mp = os::is_MP();
  94   __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
  95                     : "=a" (exchange_value)
  96                     : "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
  97                     : "cc", "memory");
  98   return exchange_value;
  99 }
 100 
 101 inline jint     Atomic::cmpxchg    (jint     exchange_value, volatile jint*     dest, jint     compare_value) {
 102   int mp = os::is_MP();
 103   __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
 104                     : "=a" (exchange_value)
 105                     : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
 106                     : "cc", "memory");
 107   return exchange_value;
 108 }
 109 
 110 #ifdef AMD64
 111 inline void Atomic::store    (jlong    store_value, jlong*    dest) { *dest = store_value; }
 112 inline void Atomic::store    (jlong    store_value, volatile jlong*    dest) { *dest = store_value; }




  67 }
  68 
  69 inline void Atomic::dec    (volatile jint*     dest) {
  70   int mp = os::is_MP();
  71   __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" :
  72                     : "r" (dest), "r" (mp) : "cc", "memory");
  73 }
  74 
  75 inline void Atomic::dec_ptr(volatile void*     dest) {
  76   dec_ptr((volatile intptr_t*)dest);
  77 }
  78 
  79 inline jint     Atomic::xchg    (jint     exchange_value, volatile jint*     dest) {
  80   __asm__ volatile (  "xchgl (%2),%0"
  81                     : "=r" (exchange_value)
  82                     : "0" (exchange_value), "r" (dest)
  83                     : "memory");
  84   return exchange_value;
  85 }
  86 
  87 inline void*    Atomic::xchg_ptr       (void*    exchange_value, volatile void*     dest) {
  88   return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  89 }
  90 
  91 inline jbyte    AtomicPlatform::cmpxchg(jbyte    exchange_value, volatile jbyte*    dest, jbyte    compare_value) {

  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) {
 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; }


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