*** old/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Feb 18 19:05:38 2010
--- new/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Feb 18 19:05:38 2010

*** 308,317 ****
--- 308,329 ----
  static int reg2offset_out(VMReg r) {
    return (r->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size;
  }
  
  // ---------------------------------------------------------------------------
+ // This method is used to read a float value which is saved on stack as double
+ // (see RegisterSaver::save_live_registers() above).
+ StackValue* StackValue::create_float_stack_value(address value_addr) {
+   union { intptr_t p; jfloat jf; } value;
+   value.p = (intptr_t) CONST64(0xDEADDEAFDEADDEAF);
+   // XMM registers are used for float values and they are saved as double
+   // without conversion. Read lowest 32 bit to get float value.
+   value.jf = *(jfloat*) value_addr;
+   return new StackValue(value.p); // 64-bit high half is stack junk
+ }
+ 
+ // ---------------------------------------------------------------------------
  // Read the array of BasicTypes from a signature, and compute where the
  // arguments should go.  Values in the VMRegPair regs array refer to 4-byte
  // quantities.  Values less than VMRegImpl::stack0 are registers, those above
  // refer to 4-byte stack slots.  All stack slots are based off of the stack pointer
  // as framesizes are fixed.