--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/x86/vm/frame_x86.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,193 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// A frame represents a physical stack frame (an activation).  Frames can be
+// C or Java frames, and the Java frames can be interpreted or compiled.
+// In contrast, vframes represent source-level activations, so that one physical frame
+// can correspond to multiple source level frames because of inlining.
+// A frame is comprised of {pc, fp, sp}
+// ------------------------------ Asm interpreter ----------------------------------------
+// Layout of asm interpreter frame:
+//    [expression stack      ] * <- sp
+//    [monitors              ]   \
+//     ...                        | monitor block size
+//    [monitors              ]   /
+//    [monitor block size    ]
+//    [byte code index/pointr]                   = bcx()                bcx_offset
+//    [pointer to locals     ]                   = locals()             locals_offset
+//    [constant pool cache   ]                   = cache()              cache_offset
+//    [methodData            ]                   = mdp()                mdx_offset
+//    [methodOop             ]                   = method()             method_offset
+//    [last sp               ]                   = last_sp()            last_sp_offset
+//    [old stack pointer     ]                     (sender_sp)          sender_sp_offset
+//    [old frame pointer     ]   <- fp           = link()
+//    [return pc             ]
+//    [oop temp              ]                     (only for native calls)
+//    [locals and parameters ]
+//                               <- sender sp
+// ------------------------------ Asm interpreter ----------------------------------------
+
+// ------------------------------ C++ interpreter ----------------------------------------
+//
+// Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run)
+//
+//                             <- SP (current esp/rsp)
+//    [local variables         ] BytecodeInterpreter::run local variables
+//    ...                        BytecodeInterpreter::run local variables
+//    [local variables         ] BytecodeInterpreter::run local variables
+//    [old frame pointer       ]   fp [ BytecodeInterpreter::run's ebp/rbp ]
+//    [return pc               ]  (return to frame manager)
+//    [interpreter_state*      ]  (arg to BytecodeInterpreter::run)   --------------
+//    [expression stack        ] <- last_Java_sp                           |
+//    [...                     ] * <- interpreter_state.stack              |
+//    [expression stack        ] * <- interpreter_state.stack_base         |
+//    [monitors                ]   \                                       |
+//     ...                          | monitor block size                   |
+//    [monitors                ]   / <- interpreter_state.monitor_base     |
+//    [struct interpretState   ] <-----------------------------------------|
+//    [return pc               ] (return to callee of frame manager [1]
+//    [locals and parameters   ]
+//                               <- sender sp
+
+// [1] When the c++ interpreter calls a new method it returns to the frame
+//     manager which allocates a new frame on the stack. In that case there
+//     is no real callee of this newly allocated frame. The frame manager is
+//     aware of the  additional frame(s) and will pop them as nested calls
+//     complete. Howevers tTo make it look good in the debugger the frame
+//     manager actually installs a dummy pc pointing to RecursiveInterpreterActivation
+//     with a fake interpreter_state* parameter to make it easy to debug
+//     nested calls.
+
+// Note that contrary to the layout for the assembly interpreter the
+// expression stack allocated for the C++ interpreter is full sized.
+// However this is not as bad as it seems as the interpreter frame_manager
+// will truncate the unused space on succesive method calls.
+//
+// ------------------------------ C++ interpreter ----------------------------------------
+
+ public:
+  enum {
+    pc_return_offset                                 =  0,
+    // All frames
+    link_offset                                      =  0,
+    return_addr_offset                               =  1,
+    // non-interpreter frames
+    sender_sp_offset                                 =  2,
+
+#ifndef CC_INTERP
+
+    // Interpreter frames
+    interpreter_frame_result_handler_offset          =  3, // for native calls only
+    interpreter_frame_oop_temp_offset                =  2, // for native calls only
+
+    interpreter_frame_sender_sp_offset               = -1,
+    // outgoing sp before a call to an invoked method
+    interpreter_frame_last_sp_offset                 = interpreter_frame_sender_sp_offset - 1,
+    interpreter_frame_method_offset                  = interpreter_frame_last_sp_offset - 1,
+    interpreter_frame_mdx_offset                     = interpreter_frame_method_offset - 1,
+    interpreter_frame_cache_offset                   = interpreter_frame_mdx_offset - 1,
+    interpreter_frame_locals_offset                  = interpreter_frame_cache_offset - 1,
+    interpreter_frame_bcx_offset                     = interpreter_frame_locals_offset - 1,
+    interpreter_frame_initial_sp_offset              = interpreter_frame_bcx_offset - 1,
+
+    interpreter_frame_monitor_block_top_offset       = interpreter_frame_initial_sp_offset,
+    interpreter_frame_monitor_block_bottom_offset    = interpreter_frame_initial_sp_offset,
+
+#endif // CC_INTERP
+
+    // Entry frames
+#ifdef AMD64
+#ifdef _WIN64
+    entry_frame_after_call_words                     =  8,
+    entry_frame_call_wrapper_offset                  =  2,
+
+    arg_reg_save_area_bytes                          = 32, // Register argument save area
+#else
+    entry_frame_after_call_words                     = 13,
+    entry_frame_call_wrapper_offset                  = -6,
+
+    arg_reg_save_area_bytes                          =  0,
+#endif // _WIN64
+#else
+    entry_frame_call_wrapper_offset                  =  2,
+#endif // AMD64
+
+    // Native frames
+
+    native_frame_initial_param_offset                =  2
+
+  };
+
+  intptr_t ptr_at(int offset) const {
+    return *ptr_at_addr(offset);
+  }
+
+  void ptr_at_put(int offset, intptr_t value) {
+    *ptr_at_addr(offset) = value;
+  }
+
+ private:
+  // an additional field beyond _sp and _pc:
+  intptr_t*   _fp; // frame pointer
+  // The interpreter and adapters will extend the frame of the caller.
+  // Since oopMaps are based on the sp of the caller before extension
+  // we need to know that value. However in order to compute the address
+  // of the return address we need the real "raw" sp. Since sparc already
+  // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's
+  // original sp we use that convention.
+
+  intptr_t*     _unextended_sp;
+
+  intptr_t* ptr_at_addr(int offset) const {
+    return (intptr_t*) addr_at(offset);
+  }
+
+ public:
+  // Constructors
+
+  frame(intptr_t* sp, intptr_t* fp, address pc);
+
+  frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc);
+
+  frame(intptr_t* sp, intptr_t* fp);
+
+  // accessors for the instance variables
+  intptr_t*   fp() const { return _fp; }
+
+  inline address* sender_pc_addr() const;
+
+  // return address of param, zero origin index.
+  inline address* native_param_addr(int idx) const;
+
+  // expression stack tos if we are nested in a java call
+  intptr_t* interpreter_frame_last_sp() const;
+
+#ifndef CC_INTERP
+  // deoptimization support
+  void interpreter_frame_set_last_sp(intptr_t* sp);
+#endif // CC_INTERP
+
+#ifdef CC_INTERP
+  inline interpreterState get_interpreterState() const;
+#endif // CC_INTERP