All calls to Java have to go via JavaCalls. Sets up the stack frame

// and makes sure that the last_Java_frame pointers are chained correctly.

class   
JavaCalls: AllStatic {

    
static   
void   
call_helper(JavaValue* result, methodHandle* method, JavaCallArguments* args, TRAPS);

   
public  
:

    
// Optimized Constuctor call

    
static   
void   
call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS);

    
// call_special

    
// ------------

    
// The receiver must be first oop in argument list

    
// receiver表示方法的接收者，如A.main()呼叫中，A就是方法的接收者

    
static   
void   
call_special(JavaValue* result, KlassHandle klass, Symbol* name,Symbol* signature, JavaCallArguments* args, TRAPS);

    
static   
void   
call_special(JavaValue* result, Handle receiver, KlassHandle klass,Symbol* name, Symbol* signature, TRAPS);   
// No args

    
static   
void   
call_special(JavaValue* result, Handle receiver, KlassHandle klass,Symbol* name, Symbol* signature, Handle arg1, TRAPS);

    
static   
void   
call_special(JavaValue* result, Handle receiver, KlassHandle klass,Symbol* name, Symbol* signatur

methodHandle* method, JavaCallArguments* args, TRAPS

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