# HG changeset patch
# User Stefan Anzinger <stefan.anzinger@gmail.com>
# Date 1406734808 25200
# Node ID ab59ee6c581b3d480db490b4abbd23948fa9ebaa
# Parent  5391f043d5f5bef4981552a722cd79f5427bbc49
[SPARC] Fix deoptimization fixup of return pc when called via the deoptimization entry

diff -r 5391f043d5f5 -r ab59ee6c581b src/cpu/sparc/vm/sharedRuntime_sparc.cpp
--- a/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Wed Jul 30 08:37:10 2014 -0700
+++ b/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Wed Jul 30 08:40:08 2014 -0700
@@ -3567,33 +3567,6 @@
   // Restore G2_thread
   __ get_thread();
 
-#ifdef GRAAL
-  // load throwing pc from JavaThread and patch it as the return address
-  // of the current frame. Then clear the field in JavaThread
-  __ block_comment("load throwing pc and patch return");
-  Address exception_pc(G2_thread, JavaThread::exception_pc_offset());
-  Label has_no_pc;
-  // TODO: Remove this weird check if we should patch the return pc
-  // This is because when graal decides to deoptimize and the ExceptionHandlerStub.java
-  // jumps back to this code and the I7 register contains the pc pointing to the begin
-  // of this code. If this is the case (PC within a certain range) then we need to patch
-  // the return pc.
-  // THIS NEEDS REWORK! (sa)
-  __ rdpc(L0);
-  __ sub(L0, I7, L0);
-  __ cmp(L0, 0xFFF);
-  __ br(Assembler::greater, false, Assembler::pt, has_no_pc);
-  __ delayed() -> nop();
-  __ cmp(L0, -0xFFF);
-  __ br(Assembler::less, false, Assembler::pt, has_no_pc);
-  __ delayed() -> nop();
-  __ ld_ptr(exception_pc, I7);
-  __ sub(I7, 8, I7);
-  __ st_ptr(G0, exception_pc);
-  __ bind(has_no_pc);
-  __ block_comment("/load throwing pc and patch return");
-#endif // GAAL
-
 #ifdef ASSERT
   {
     // verify that there is really an exception oop in exception_oop
diff -r 5391f043d5f5 -r ab59ee6c581b src/share/vm/code/nmethod.hpp
--- a/src/share/vm/code/nmethod.hpp	Wed Jul 30 08:37:10 2014 -0700
+++ b/src/share/vm/code/nmethod.hpp	Wed Jul 30 08:40:08 2014 -0700
@@ -643,7 +643,21 @@
 
   // (thomaswue) When using graal, the address might be off by 5 (because this is the size of the call instruction.
   // (thomaswue) TODO: Replace this by a more general mechanism.
-  bool is_deopt_entry   (address pc) { return pc == deopt_handler_begin() GRAAL_ONLY( || pc == deopt_handler_begin() + 5); }
+  // (sanzinger) SPARC has another offset, looked for some variable existing in HotSpot which describes this offset, but i have not
+  // found anything.
+  bool is_deopt_entry   (address pc) {
+    return pc == deopt_handler_begin()
+#ifdef GRAAL
+      || pc == deopt_handler_begin() +
+#ifdef TARGET_ARCH_sparc
+  8
+#endif // sparc
+#ifdef TARGET_ARCH_x86
+  5
+#endif // x86
+#endif // GRAAL
+      ;
+  }
   bool is_deopt_mh_entry(address pc) { return pc == deopt_mh_handler_begin(); }
   // Accessor/mutator for the original pc of a frame before a frame was deopted.
   address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); }