25 
  26 #include "precompiled.hpp"
  27 #include "assembler_zero.inline.hpp"
  28 #include "entry_zero.hpp"
  29 #include "interpreter/cppInterpreter.hpp"
  30 #include "memory/resourceArea.hpp"
  31 #include "nativeInst_zero.hpp"
  32 #include "oops/oop.inline.hpp"
  33 #include "runtime/handles.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "runtime/stubRoutines.hpp"
  36 #include "utilities/ostream.hpp"
  37 #ifdef COMPILER1
  38 #include "c1/c1_Runtime1.hpp"
  39 #endif
  40 
  41 // This method is called by nmethod::make_not_entrant_or_zombie to
  42 // insert a jump to SharedRuntime::get_handle_wrong_method_stub()
  43 // (dest) at the start of a compiled method (verified_entry) to avoid
  44 // a race where a method is invoked while being made non-entrant.
  45 //
  46 // In Shark, verified_entry is a pointer to a SharkEntry.  We can
  47 // handle this simply by changing it's entry point to point at the
  48 // interpreter.  This only works because the interpreter and Shark
  49 // calling conventions are the same.
  50 
  51 void NativeJump::patch_verified_entry(address entry,
  52                                       address verified_entry,
  53                                       address dest) {
  54   assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be");
  55 
  56 #ifdef CC_INTERP
  57   ((ZeroEntry*) verified_entry)->set_entry_point(
  58     (address) CppInterpreter::normal_entry);
  59 #else
  60   Unimplemented();
  61 #endif // CC_INTERP
  62 }

  25 
  26 #include "precompiled.hpp"
  27 #include "assembler_zero.inline.hpp"
  28 #include "entry_zero.hpp"
  29 #include "interpreter/cppInterpreter.hpp"
  30 #include "memory/resourceArea.hpp"
  31 #include "nativeInst_zero.hpp"
  32 #include "oops/oop.inline.hpp"
  33 #include "runtime/handles.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "runtime/stubRoutines.hpp"
  36 #include "utilities/ostream.hpp"
  37 #ifdef COMPILER1
  38 #include "c1/c1_Runtime1.hpp"
  39 #endif
  40 
  41 // This method is called by nmethod::make_not_entrant_or_zombie to
  42 // insert a jump to SharedRuntime::get_handle_wrong_method_stub()
  43 // (dest) at the start of a compiled method (verified_entry) to avoid
  44 // a race where a method is invoked while being made non-entrant.





  45 
  46 void NativeJump::patch_verified_entry(address entry,
  47                                       address verified_entry,
  48                                       address dest) {
  49   assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be");
  50 
  51 #ifdef CC_INTERP
  52   ((ZeroEntry*) verified_entry)->set_entry_point(
  53     (address) CppInterpreter::normal_entry);
  54 #else
  55   Unimplemented();
  56 #endif // CC_INTERP
  57 }