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hotspot/src/cpu/sparc/vm/interp_masm_sparc.hpp

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+/*
+ * 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
+
+REGISTER_DECLARATION(     Register, Otos_i , O0); // tos for ints, etc
+REGISTER_DECLARATION(     Register, Otos_l , O0); // for longs
+REGISTER_DECLARATION(     Register, Otos_l1, O0); // for 1st part of longs
+REGISTER_DECLARATION(     Register, Otos_l2, O1); // for 2nd part of longs
+REGISTER_DECLARATION(FloatRegister, Ftos_f , F0); // for floats
+REGISTER_DECLARATION(FloatRegister, Ftos_d , F0); // for doubles
+REGISTER_DECLARATION(FloatRegister, Ftos_d1, F0); // for 1st part of double
+REGISTER_DECLARATION(FloatRegister, Ftos_d2, F1); // for 2nd part of double
+
+#ifndef DONT_USE_REGISTER_DEFINES
+#define Otos_i  O0
+#define Otos_l  O0
+#define Otos_l1 O0
+#define Otos_l2 O1
+#define Ftos_f  F0
+#define Ftos_d  F0
+#define Ftos_d1 F0
+#define Ftos_d2 F1
+#endif // DONT_USE_REGISTER_DEFINES
+
+class InterpreterMacroAssembler: public MacroAssembler {
+ protected:
+#ifndef CC_INTERP
+  // Interpreter specific version of call_VM_base
+    virtual void call_VM_leaf_base(
+    Register java_thread,
+    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_exception=true
+  );
+
+  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);
+#endif /* CC_INTERP */
+
+ public:
+  InterpreterMacroAssembler(CodeBuffer* c)
+    : MacroAssembler(c) {}
+
+#ifndef CC_INTERP
+  virtual void load_earlyret_value(TosState state);
+
+  static const Address l_tmp ;
+  static const Address d_tmp ;
+#endif /* CC_INTERP */
+
+  // helper routine for frame allocation/deallocation
+  // compute the delta by which the caller's SP has to
+  // be adjusted to accomodate for the non-argument
+  // locals
+  void compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta);
+
+#ifndef CC_INTERP
+
+  // dispatch routines
+  void dispatch_prolog(TosState state, int step = 0);
+  void dispatch_epilog(TosState state, int step = 0);
+  void dispatch_only(TosState state);
+  void dispatch_normal(TosState state);
+  void dispatch_next(TosState state, int step = 0);
+  void dispatch_next_noverify_oop(TosState state, int step = 0);
+  void dispatch_via (TosState state, address* table);
+
+
+  // Removes the current activation (incl. unlocking of monitors).
+  // Additionally this code is used for earlyReturn in which case we
+  // want to skip throwing an exception and installing an exception.
+  void remove_activation(TosState state,
+                         bool throw_monitor_exception = true,
+                         bool install_monitor_exception = true);
+
+ protected:
+  void dispatch_Lbyte_code(TosState state, address* table, int bcp_incr = 0, bool verify = true);
+#endif /* CC_INTERP */
+
+ public:
+  // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
+  void super_call_VM(Register thread_cache,
+                     Register oop_result,
+                     Register last_java_sp,
+                     address entry_point,
+                     Register arg_1,
+                     Register arg_2,
+                     bool check_exception = true);
+
+#ifndef CC_INTERP
+  void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1);
+
+  // Generate a subtype check: branch to ok_is_subtype if sub_klass is
+  // a subtype of super_klass.  Blows registers tmp1, tmp2 and tmp3.
+  void gen_subtype_check( Register sub_klass, Register super_klass, Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype );
+
+  // helpers for tossing exceptions
+  void throw_if_not_1_icc( Condition ok_condition, Label& ok );
+  void throw_if_not_1_xcc( Condition ok_condition, Label& ok );
+  void throw_if_not_1_x  ( Condition ok_condition, Label& ok ); // chooses icc or xcc based on _LP64
+
+  void throw_if_not_2( address throw_entry_point, Register Rscratch, Label& ok);
+
+  void throw_if_not_icc( Condition ok_condition, address throw_entry_point, Register Rscratch );
+  void throw_if_not_xcc( Condition ok_condition, address throw_entry_point, Register Rscratch );
+  void throw_if_not_x  ( Condition ok_condition, address throw_entry_point, Register Rscratch );
+
+  // helpers for expression stack
+
+  void pop_i(     Register r = Otos_i);
+  void pop_ptr(   Register r = Otos_i, Register scratch = O4);
+  void pop_l(     Register r = Otos_l1);
+  // G4_scratch and Lscratch are used at call sites!!
+  void pop_f(FloatRegister f = Ftos_f,  Register scratch = G1_scratch);
+  void pop_d(FloatRegister f = Ftos_d1, Register scratch = G1_scratch);
+
+  void push_i(     Register r = Otos_i);
+  void push_ptr(   Register r = Otos_i);
+  void push_ptr(   Register r, Register tag);
+  void push_l(     Register r = Otos_l1);
+  void push_f(FloatRegister f = Ftos_f);
+  void push_d(FloatRegister f = Ftos_d1);
+
+
+  void pop (TosState state);           // transition vtos -> state
+  void push(TosState state);           // transition state -> vtos
+  void empty_expression_stack();       // resets both Lesp and SP
+
+  // Support for Tagged Stacks
+  void tag_stack(frame::Tag t, Register r);
+  void tag_stack(Register tag);
+  void tag_local(frame::Tag t, Register src, Register base, int n = 0);
+
+#ifdef ASSERT
+  void verify_sp(Register Rsp, Register Rtemp);
+  void verify_esp(Register Resp);      // verify that Lesp points to a word in the temp stack
+
+  void verify_stack_tag(frame::Tag t, Register r, Register scratch = G0);
+  void verify_local_tag(frame::Tag t, Register base, Register scr, int n = 0);
+#endif // ASSERT
+
+ public:
+  void if_cmp(Condition cc, bool ptr_compare);
+
+  // Load values from bytecode stream:
+
+  enum signedOrNot { Signed, Unsigned };
+  enum setCCOrNot  { set_CC,  dont_set_CC };
+
+  void get_2_byte_integer_at_bcp( int         bcp_offset,
+                                  Register    Rtmp,
+                                  Register    Rdst,
+                                  signedOrNot is_signed,
+                                  setCCOrNot  should_set_CC = dont_set_CC );
+
+  void get_4_byte_integer_at_bcp( int        bcp_offset,
+                                  Register   Rtmp,
+                                  Register   Rdst,
+                                  setCCOrNot should_set_CC = dont_set_CC );
+
+  void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset);
+  void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset);
+
+
+  // common code
+
+  void field_offset_at(int n, Register tmp, Register dest, Register base);
+  int  field_offset_at(Register object, address bcp, int offset);
+  void fast_iaaccess(int n, address bcp);
+  void fast_iagetfield(address bcp);
+  void fast_iaputfield(address bcp, bool do_store_check );
+
+  void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
+  void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
+
+  void get_constant_pool(Register Rdst);
+  void get_constant_pool_cache(Register Rdst);
+  void get_cpool_and_tags(Register Rcpool, Register Rtags);
+  void is_a(Label& L);
+
+  // Load compiled (i2c) or interpreter entry and call from interpreted
+  void call_from_interpreter(Register target, Register scratch, Register Rret);
+
+  // --------------------------------------------------
+
+  void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
+
+  void add_monitor_to_stack( bool stack_is_empty,
+                             Register Rtemp,
+                             Register Rtemp2 );
+
+  // Load/store aligned in _LP64 but unaligned otherwise
+  // These only apply to the Interpreter expression stack and locals!
+  void  load_unaligned_double(Register r1, int offset,  FloatRegister d);
+  void store_unaligned_double(FloatRegister d, Register r1, int offset );
+
+  // Load/store aligned in _LP64 but unaligned otherwise
+  void  load_unaligned_long(Register r1, int offset,  Register d);
+  void store_unaligned_long(Register d, Register r1, int offset );
+
+  void access_local_int( Register index, Register dst );
+  void access_local_ptr( Register index, Register dst );
+  void access_local_returnAddress( Register index, Register dst );
+  void access_local_long( Register index, Register dst );
+  void access_local_float( Register index, FloatRegister dst );
+  void access_local_double( Register index, FloatRegister dst );
+#ifdef ASSERT
+  void check_for_regarea_stomp( Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
+#endif // ASSERT
+  void store_local_int( Register index, Register src );
+  void store_local_ptr( Register index, Register src, Register tag = Otos_l2 );
+  void store_local_ptr( int n, Register src, Register tag = Otos_l2 );
+  void store_local_long( Register index, Register src );
+  void store_local_float( Register index, FloatRegister src );
+  void store_local_double( Register index, FloatRegister src );
+
+  // 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 stack helper for getting receiver in register.
+  void load_receiver(Register param_count, Register recv);
+
+  static int top_most_monitor_byte_offset(); // offset in bytes to top of monitor block
+  Address top_most_monitor();
+  void compute_stack_base( Register Rdest );
+
+#endif /* CC_INTERP */
+  void increment_invocation_counter( Register Rtmp, Register Rtmp2 );
+  void increment_backedge_counter( Register Rtmp, Register Rtmp2 );
+#ifndef CC_INTERP
+  void test_backedge_count_for_osr( Register backedge_count, Register branch_bcp, Register Rtmp );
+
+#endif /* CC_INTERP */
+  // Object locking
+  void lock_object  (Register lock_reg, Register obj_reg);
+  void unlock_object(Register lock_reg);
+
+#ifndef CC_INTERP
+  // Interpreter profiling operations
+  void set_method_data_pointer() { set_method_data_pointer_offset(noreg); }
+  void set_method_data_pointer_for_bcp();
+  void set_method_data_pointer_offset(Register mdi_reg);
+  void test_method_data_pointer(Label& zero_continue);
+  void verify_method_data_pointer();
+  void test_invocation_counter_for_mdp(Register invocation_count, Register cur_bcp, Register Rtmp, Label &profile_continue);
+
+  void set_mdp_data_at(int constant, Register value);
+  void increment_mdp_data_at(Address counter, Register bumped_count,
+                             bool decrement = false);
+  void increment_mdp_data_at(int constant, Register bumped_count,
+                             bool decrement = false);
+  void increment_mdp_data_at(Register reg, int constant,
+                             Register bumped_count, Register scratch2,
+                             bool decrement = false);
+  void set_mdp_flag_at(int flag_constant, Register scratch);
+  void test_mdp_data_at(int offset, Register value, Label& not_equal_continue,
+                        Register scratch);
+
+  void record_klass_in_profile(Register receiver, Register scratch);
+  void record_klass_in_profile_helper(Register receiver, Register scratch,
+                                      int start_row, Label& done);
+
+  void update_mdp_by_offset(int offset_of_disp, Register scratch);
+  void update_mdp_by_offset(Register reg, int offset_of_disp,
+                            Register scratch);
+  void update_mdp_by_constant(int constant);
+  void update_mdp_for_ret(TosState state, Register return_bci);
+
+  void profile_taken_branch(Register scratch, Register bumped_count);
+  void profile_not_taken_branch(Register scratch);
+  void profile_call(Register scratch);
+  void profile_final_call(Register scratch);
+  void profile_virtual_call(Register receiver, Register scratch);
+  void profile_ret(TosState state, Register return_bci, Register scratch);
+  void profile_null_seen(Register scratch);
+  void profile_typecheck(Register klass, Register scratch);
+  void profile_typecheck_failed(Register scratch);
+  void profile_switch_default(Register scratch);
+  void profile_switch_case(Register index,
+                           Register scratch1,
+                           Register scratch2,
+                           Register scratch3);
+
+  // Debugging
+  void interp_verify_oop(Register reg, TosState state, const char * file, int line);    // only if +VerifyOops && state == atos
+  void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
+  void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU  && (state == ftos || state == dtos)
+
+#endif /* CC_INTERP */
+  // support for JVMTI/Dtrace
+  typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
+  void notify_method_entry();
+  void notify_method_exit(
+    bool save_result, TosState state, NotifyMethodExitMode mode);
+
+  void save_return_value(TosState state, bool is_native_call);
+  void restore_return_value(TosState state, bool is_native_call);
+};