src/cpu/ppc/vm/stubGenerator_ppc.cpp

rev 8109 : 8077838: Recent developments for ppc.
Reviewed-by: kvn

@@ -259,13 +259,10 @@
       //
 
       // global toc register
       __ load_const(R29, MacroAssembler::global_toc(), R11_scratch1);
 
-      // Load narrow oop base.
-      __ reinit_heapbase(R30, R11_scratch1);
-
       // Remember the senderSP so we interpreter can pop c2i arguments off of the stack
       // when called via a c2i.
 
       // Pass initial_caller_sp to framemanager.
       __ mr(R21_tmp1, R1_SP);

@@ -416,10 +413,27 @@
   // Continuation point for runtime calls returning with a pending
   // exception.  The pending exception check happened in the runtime
   // or native call stub.  The pending exception in Thread is
   // converted into a Java-level exception.
   //
+  // Read:
+  //
+  //   LR:     The pc the runtime library callee wants to return to.
+  //           Since the exception occurred in the callee, the return pc
+  //           from the point of view of Java is the exception pc.
+  //   thread: Needed for method handles.
+  //
+  // Invalidate:
+  //
+  //   volatile registers (except below).
+  //
+  // Update:
+  //
+  //   R4_ARG2: exception
+  //
+  // (LR is unchanged and is live out).
+  //
   address generate_forward_exception() {
     StubCodeMark mark(this, "StubRoutines", "forward_exception");
     address start = __ pc();
 
 #if !defined(PRODUCT)