revert java frame anchor changes

Author: offamitkumar

src/hotspot/cpu/s390/javaFrameAnchor_s390.hpp

@@ -26,8 +26,6 @@
 #ifndef CPU_S390_JAVAFRAMEANCHOR_S390_HPP
 #define CPU_S390_JAVAFRAMEANCHOR_S390_HPP
 
-  JFR_ONLY(intptr_t* volatile _last_sender_Java_fp;) // specialized field for when JFR samples an interpreter frame
-
  public:
 
   // Each arch must define reset, save, restore.
@@ -44,7 +42,6 @@
     OrderAccess::fence();
 
     _last_Java_pc = nullptr;
-    JFR_ONLY(_last_sender_Java_fp = nullptr;)
   }
 
   inline void set(intptr_t* sp, address pc) {
@@ -67,7 +64,6 @@
       OrderAccess::fence();
     }
     _last_Java_pc = src->_last_Java_pc;
-    JFR_ONLY(_last_sender_Java_fp = src->_last_sender_Java_fp;)
     // Must be last so profiler will always see valid frame if has_last_frame() is true.
 
     OrderAccess::release();
@@ -88,9 +84,4 @@
 
   address last_Java_pc(void)          { return _last_Java_pc; }
 
-  intptr_t* last_Java_fp() const      { return *(intptr_t**)_last_Java_sp; }
-
-  JFR_ONLY(intptr_t* last_sender_Java_fp() const { return _last_sender_Java_fp;})
-  JFR_ONLY(static ByteSize last_sender_Java_fp_offset() { return byte_offset_of(JavaFrameAnchor, _last_sender_Java_fp); })
-
 #endif // CPU_S390_JAVAFRAMEANCHOR_S390_HPP

src/hotspot/os_cpu/linux_s390/javaThread_linux_s390.hpp

@@ -40,7 +40,4 @@
 
   bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava);
 
-  JFR_ONLY(static ByteSize last_sender_Java_fp_offset() {
-    return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_sender_Java_fp_offset();
-  })
 #endif // OS_CPU_LINUX_S390_JAVATHREAD_LINUX_S390_HPP