src/os_cpu/linux_s390/vm/atomic_linux_s390.hpp

rev 13496 : imported patch add_linux_s390

@@ -80,12 +80,25 @@
 // instruction is retried as often as required.
 //
 // The return value of the method is the value that was successfully stored. At the
 // time the caller receives back control, the value in memory may have changed already.
 
-inline jint Atomic::add(jint inc, volatile jint*dest) {
-  unsigned int old, upd;
+template<size_t byte_size>
+struct Atomic::PlatformAdd
+  : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
+{
+  template<typename I, typename D>
+  D add_and_fetch(I add_value, D volatile* dest) const;
+};
+
+template<>
+template<typename I, typename D>
+inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const {
+  STATIC_CAST(4 == sizeof(I));
+  STATIC_CAST(4 == sizeof(D));
+
+  D old, upd;
 
   if (VM_Version::has_LoadAndALUAtomicV1()) {
     __asm__ __volatile__ (
       "   LGFR     0,%[inc]                \n\t" // save increment
       "   LA       3,%[mem]                \n\t" // force data address into ARG2

@@ -122,16 +135,21 @@
       //---<  clobbered  >---
       : "cc"
     );
   }
 
-  return (jint)upd;
+  return upd;
 }
 
 
-inline intptr_t Atomic::add_ptr(intptr_t inc, volatile intptr_t* dest) {
-  unsigned long old, upd;
+template<>
+template<typename I, typename D>
+inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const {
+  STATIC_CAST(8 == sizeof(I));
+  STATIC_CAST(8 == sizeof(D));
+
+  D old, upd;
 
   if (VM_Version::has_LoadAndALUAtomicV1()) {
     __asm__ __volatile__ (
       "   LGR      0,%[inc]                \n\t" // save increment
       "   LA       3,%[mem]                \n\t" // force data address into ARG2

@@ -168,15 +186,11 @@
       //---<  clobbered  >---
       : "cc"
     );
   }
 
-  return (intptr_t)upd;
-}
-
-inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
-  return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
+  return upd;
 }
 
 
 //------------
 // Atomic::inc