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src/hotspot/share/prims/unsafe.cpp

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rev 54327 : 8221477: Inject os/cpu-specific constants into Unsafe from JVM
Summary: Initialize Unsafe os/cpu-specific constants using injection instead of native callouts
Reviewed-by: stuefe

@@ -289,22 +289,10 @@
 UNSAFE_ENTRY(jobject, Unsafe_GetUncompressedObject(JNIEnv *env, jobject unsafe, jlong addr)) {
   oop v = *(oop*) (address) addr;
   return JNIHandles::make_local(env, v);
 } UNSAFE_END
 
-UNSAFE_LEAF(jboolean, Unsafe_isBigEndian0(JNIEnv *env, jobject unsafe)) {
-#ifdef VM_LITTLE_ENDIAN
-  return false;
-#else
-  return true;
-#endif
-} UNSAFE_END
-
-UNSAFE_LEAF(jint, Unsafe_unalignedAccess0(JNIEnv *env, jobject unsafe)) {
-  return UseUnalignedAccesses;
-} UNSAFE_END
-
 #define DEFINE_GETSETOOP(java_type, Type) \
  \
 UNSAFE_ENTRY(java_type, Unsafe_Get##Type(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) { \
   return MemoryAccess<java_type>(thread, obj, offset).get(); \
 } UNSAFE_END \

@@ -443,18 +431,10 @@
   }
 } UNSAFE_END
 
 ////// Random queries
 
-UNSAFE_LEAF(jint, Unsafe_AddressSize0(JNIEnv *env, jobject unsafe)) {
-  return sizeof(void*);
-} UNSAFE_END
-
-UNSAFE_LEAF(jint, Unsafe_PageSize()) {
-  return os::vm_page_size();
-} UNSAFE_END
-
 static jlong find_field_offset(jclass clazz, jstring name, TRAPS) {
   assert(clazz != NULL, "clazz must not be NULL");
   assert(name != NULL, "name must not be NULL");
 
   ResourceMark rm(THREAD);

@@ -1070,12 +1050,10 @@
     {CC "staticFieldOffset0", CC "(" FLD ")J",           FN_PTR(Unsafe_StaticFieldOffset0)},
     {CC "staticFieldBase0",   CC "(" FLD ")" OBJ,        FN_PTR(Unsafe_StaticFieldBase0)},
     {CC "ensureClassInitialized0", CC "(" CLS ")V",      FN_PTR(Unsafe_EnsureClassInitialized0)},
     {CC "arrayBaseOffset0",   CC "(" CLS ")I",           FN_PTR(Unsafe_ArrayBaseOffset0)},
     {CC "arrayIndexScale0",   CC "(" CLS ")I",           FN_PTR(Unsafe_ArrayIndexScale0)},
-    {CC "addressSize0",       CC "()I",                  FN_PTR(Unsafe_AddressSize0)},
-    {CC "pageSize",           CC "()I",                  FN_PTR(Unsafe_PageSize)},
 
     {CC "defineClass0",       CC "(" DC_Args ")" CLS,    FN_PTR(Unsafe_DefineClass0)},
     {CC "allocateInstance",   CC "(" CLS ")" OBJ,        FN_PTR(Unsafe_AllocateInstance)},
     {CC "throwException",     CC "(" THR ")V",           FN_PTR(Unsafe_ThrowException)},
     {CC "compareAndSetReference",CC "(" OBJ "J" OBJ "" OBJ ")Z", FN_PTR(Unsafe_CompareAndSetReference)},

@@ -1099,13 +1077,10 @@
     {CC "shouldBeInitialized0", CC "(" CLS ")Z",         FN_PTR(Unsafe_ShouldBeInitialized0)},
 
     {CC "loadFence",          CC "()V",                  FN_PTR(Unsafe_LoadFence)},
     {CC "storeFence",         CC "()V",                  FN_PTR(Unsafe_StoreFence)},
     {CC "fullFence",          CC "()V",                  FN_PTR(Unsafe_FullFence)},
-
-    {CC "isBigEndian0",       CC "()Z",                  FN_PTR(Unsafe_isBigEndian0)},
-    {CC "unalignedAccess0",   CC "()Z",                  FN_PTR(Unsafe_unalignedAccess0)}
 };
 
 #undef CC
 #undef FN_PTR
 
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