--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/x86/vm/interp_masm_x86_32.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,235 @@
+/*
+ * 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.
+ *
+ */
+
+// This file specializes the assember with interpreter-specific macros
+
+
+class InterpreterMacroAssembler: public MacroAssembler {
+#ifndef CC_INTERP
+ protected:
+  // Interpreter specific version of call_VM_base
+  virtual void call_VM_leaf_base(
+    address entry_point,
+    int     number_of_arguments
+  );
+
+  virtual void call_VM_base(
+    Register oop_result,
+    Register java_thread,
+    Register last_java_sp,
+    address  entry_point,
+    int      number_of_arguments,
+    bool     check_exceptions
+  );
+
+  virtual void check_and_handle_popframe(Register java_thread);
+  virtual void check_and_handle_earlyret(Register java_thread);
+
+  // base routine for all dispatches
+  void dispatch_base(TosState state, address* table, bool verifyoop = true);
+#endif /* CC_INTERP */
+
+ public:
+  InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
+
+  void load_earlyret_value(TosState state);
+
+  // Interpreter-specific registers
+#ifdef CC_INTERP
+  void save_bcp()                                          { /*  not needed in c++ interpreter and harmless */ }
+  void restore_bcp()                                       { /*  not needed in c++ interpreter and harmless */ }
+
+  // Helpers for runtime call arguments/results
+  void get_method(Register reg);
+
+#else
+
+  void save_bcp()                                          { movl(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
+  void restore_bcp()                                       { movl(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
+  void restore_locals()                                    { movl(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
+
+  // Helpers for runtime call arguments/results
+  void get_method(Register reg)                            { movl(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
+  void get_constant_pool(Register reg)                     { get_method(reg); movl(reg, Address(reg, methodOopDesc::constants_offset())); }
+  void get_constant_pool_cache(Register reg)               { get_constant_pool(reg); movl(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
+  void get_cpool_and_tags(Register cpool, Register tags)   { get_constant_pool(cpool); movl(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
+  }
+  void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
+  void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset);
+  void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
+
+  // Expression stack
+  void f2ieee();                                           // truncate ftos to 32bits
+  void d2ieee();                                           // truncate dtos to 64bits
+#endif // CC_INTERP
+
+
+  void pop_ptr(Register r = rax);
+  void pop_ptr(Register r, Register tag);
+  void pop_i(Register r = rax);
+  void pop_l(Register lo = rax, Register hi = rdx);
+  void pop_f();
+  void pop_d();
+  void pop_ftos_to_rsp();
+  void pop_dtos_to_rsp();
+
+  void push_ptr(Register r = rax);
+  void push_ptr(Register r, Register tag);
+  void push_i(Register r = rax);
+  void push_l(Register lo = rax, Register hi = rdx);
+  void push_d(Register r = rax);
+  void push_f();
+
+  void pop(TosState state);        // transition vtos -> state
+  void push(TosState state);       // transition state -> vtos
+
+  DEBUG_ONLY(void verify_stack_tag(frame::Tag t);)
+
+#ifndef CC_INTERP
+
+  void empty_expression_stack()                            {
+       movl(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
+      // NULL last_sp until next java call
+      movl(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
+  }
+
+  // Tagged stack helpers for swap and dup
+  void load_ptr_and_tag(int n, Register val, Register tag);
+  void store_ptr_and_tag(int n, Register val, Register tag);
+
+  // Tagged Local support
+
+  void tag_local(frame::Tag tag, int n);
+  void tag_local(Register tag, int n);
+  void tag_local(frame::Tag tag, Register idx);
+  void tag_local(Register tag, Register idx);
+
+#ifdef ASSERT
+  void verify_local_tag(frame::Tag tag, int n);
+  void verify_local_tag(frame::Tag tag, Register idx);
+#endif // ASSERT
+
+  // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
+  void super_call_VM_leaf(address entry_point);
+  void super_call_VM_leaf(address entry_point, Register arg_1);
+  void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
+  void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
+
+  // Generate a subtype check: branch to ok_is_subtype if sub_klass is
+  // a subtype of super_klass.  EAX holds the super_klass.  Blows ECX
+  // and EDI.  Register sub_klass cannot be any of the above.
+  void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
+
+  // Dispatching
+  void dispatch_prolog(TosState state, int step = 0);
+  void dispatch_epilog(TosState state, int step = 0);
+  void dispatch_only(TosState state);                      // dispatch via rbx, (assume rbx, is loaded already)
+  void dispatch_only_normal(TosState state);               // dispatch normal table via rbx, (assume rbx, is loaded already)
+  void dispatch_only_noverify(TosState state);
+  void dispatch_next(TosState state, int step = 0);        // load rbx, from [esi + step] and dispatch via rbx,
+  void dispatch_via (TosState state, address* table);      // load rbx, from [esi] and dispatch via rbx, and table
+
+
+  // jump to an invoked target
+  void jump_from_interpreted(Register method, Register temp);
+
+  // Returning from interpreted functions
+  //
+  // Removes the current activation (incl. unlocking of monitors)
+  // and sets up the return address.  This code is also used for
+  // exception unwindwing. In that case, we do not want to throw
+  // IllegalMonitorStateExceptions, since that might get us into an
+  // infinite rethrow exception loop.
+  // Additionally this code is used for popFrame and earlyReturn.
+  // In popFrame case we want to skip throwing an exception,
+  // installing an exception, and notifying jvmdi.
+  // In earlyReturn case we only want to skip throwing an exception
+  // and installing an exception.
+  void remove_activation(TosState state, Register ret_addr,
+                         bool throw_monitor_exception = true,
+                         bool install_monitor_exception = true,
+                         bool notify_jvmdi = true);
+#endif /* !CC_INTERP */
+
+  // Debugging
+  void verify_oop(Register reg, TosState state = atos);    // only if +VerifyOops && state == atos
+#ifndef CC_INTERP
+  void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU  && (state == ftos || state == dtos)
+
+#endif /* !CC_INTERP */
+
+  // Object locking
+  void lock_object  (Register lock_reg);
+  void unlock_object(Register lock_reg);
+
+#ifndef CC_INTERP
+
+  // Interpreter profiling operations
+  void set_method_data_pointer_for_bcp();
+  void test_method_data_pointer(Register mdp, Label& zero_continue);
+  void verify_method_data_pointer();
+
+  void set_mdp_data_at(Register mdp_in, int constant, Register value);
+  void increment_mdp_data_at(Address data, bool decrement = false);
+  void increment_mdp_data_at(Register mdp_in, int constant,
+                             bool decrement = false);
+  void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
+                             bool decrement = false);
+  void set_mdp_flag_at(Register mdp_in, int flag_constant);
+  void test_mdp_data_at(Register mdp_in, int offset, Register value,
+                        Register test_value_out,
+                        Label& not_equal_continue);
+
+  void record_klass_in_profile(Register receiver, Register mdp,
+                               Register reg2);
+  void record_klass_in_profile_helper(Register receiver, Register mdp,
+                                      Register reg2,
+                                      int start_row, Label& done);
+
+  void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
+  void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
+  void update_mdp_by_constant(Register mdp_in, int constant);
+  void update_mdp_for_ret(Register return_bci);
+
+  void profile_taken_branch(Register mdp, Register bumped_count);
+  void profile_not_taken_branch(Register mdp);
+  void profile_call(Register mdp);
+  void profile_final_call(Register mdp);
+  void profile_virtual_call(Register receiver, Register mdp, Register scratch2);
+  void profile_ret(Register return_bci, Register mdp);
+  void profile_null_seen(Register mdp);
+  void profile_typecheck(Register mdp, Register klass, Register scratch);
+  void profile_typecheck_failed(Register mdp);
+  void profile_switch_default(Register mdp);
+  void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
+
+#endif /* !CC_INTERP */
+
+  typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
+
+  // support for jvmti
+  void notify_method_entry();
+  void notify_method_exit(TosState state, NotifyMethodExitMode mode);
+
+};