Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.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, Register arg_2);

   // 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_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

 #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

 #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, size_t index_size = sizeof(u2));

   void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));

   void get_cache_index_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));

   // 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 );

   void store_local_ptr( int n, Register src );

   void store_local_long( Register index, Register src );

   void store_local_float( Register index, FloatRegister src );

   void store_local_double( Register index, FloatRegister src );

   // Helpers for swap and dup

   void load_ptr(int n, Register val);

   void store_ptr(int n, Register val);

   // 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, bool is_virtual_call);

   void record_klass_in_profile_helper(Register receiver, Register scratch,

                                       int start_row, Label& done, bool is_virtual_call);

   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, bool receiver_can_be_null = false);

   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);

 };