1 /*

     2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef CC_INTERP

    26  protected:

    27   // Interpreter specific version of call_VM_base

    28   virtual void call_VM_leaf_base(

    29     address entry_point,

    30     int     number_of_arguments

    31   );

    32 

    33   virtual void call_VM_base(

    34     Register oop_result,

    35     Register java_thread,

    36     Register last_java_sp,

    37     address  entry_point,

    38     int      number_of_arguments,

    39     bool     check_exceptions

    40   );

    41 

    42   virtual void check_and_handle_popframe(Register java_thread);

    43   virtual void check_and_handle_earlyret(Register java_thread);

    44 

    45   // base routine for all dispatches

    46   void dispatch_base(TosState state, address* table, bool verifyoop = true);

    47 #endif /* CC_INTERP */

    48 

    49  public:

    50   InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code), _locals_register(rdi), _bcp_register(rsi) {}

    51 

    52   void load_earlyret_value(TosState state);

    53 

    54   // Interpreter-specific registers

    55 #ifdef CC_INTERP

    56   void save_bcp()                                          { /*  not needed in c++ interpreter and harmless */ }

    57   void restore_bcp()                                       { /*  not needed in c++ interpreter and harmless */ }

    58 

    59   // Helpers for runtime call arguments/results

    60   void get_method(Register reg);

    61 

    62 #else

    63 

    64   void save_bcp()                                          { movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), rsi); }

    65   void restore_bcp()                                       { movptr(rsi, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize)); }

    66   void restore_locals()                                    { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }

    67 

    68   // Helpers for runtime call arguments/results

    69   void get_method(Register reg)                            { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }

    70   void get_const(Register reg)                             { get_method(reg); movptr(reg, Address(reg, Method::const_offset())); }

    71   void get_constant_pool(Register reg)                     { get_const(reg); movptr(reg, Address(reg, ConstMethod::constants_offset())); }

    72   void get_constant_pool_cache(Register reg)               { get_constant_pool(reg); movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); }

    73   void get_cpool_and_tags(Register cpool, Register tags)   { get_constant_pool(cpool); movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));

    74   }

    75   void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);

    76   void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));

    77   void get_cache_and_index_and_bytecode_at_bcp(Register cache, Register index, Register bytecode, int byte_no, int bcp_offset, size_t index_size = sizeof(u2));

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

    79   void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));

    80 

    81   // load cpool->resolved_references(index);

    82   void load_resolved_reference_at_index(Register result, Register index);

    83 

    84   // Expression stack

    85   void f2ieee();                                           // truncate ftos to 32bits

    86   void d2ieee();                                           // truncate dtos to 64bits

    87 

    88   void pop_ptr(Register r = rax);

    89   void pop_i(Register r = rax);

    90   void pop_l(Register lo = rax, Register hi = rdx);

    91   void pop_f();

    92   void pop_d();

    93 

    94   void push_ptr(Register r = rax);

    95   void push_i(Register r = rax);

    96   void push_l(Register lo = rax, Register hi = rdx);

    97   void push_d(Register r = rax);

    98   void push_f();

    99 

   100   void pop(TosState state);        // transition vtos -> state

   101   void push(TosState state);       // transition state -> vtos

   102 

   103   void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }

   104 

   105   void push(Register r ) { ((MacroAssembler*)this)->push(r); }

   106   void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }

   107 

   108   // These are dummies to prevent surprise implicit conversions to Register

   109   void pop(void* v ); // Add unimplemented ambiguous method

   110   void push(void* v );   // Add unimplemented ambiguous method

   111 

   112   void empty_expression_stack() {

   113     movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));

   114     // NULL last_sp until next java call

   115     movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);

   116   }

   117 

   118   // Helpers for swap and dup

   119   void load_ptr(int n, Register val);

   120   void store_ptr(int n, Register val);

   121 

   122   // Generate a subtype check: branch to ok_is_subtype if sub_klass is

   123   // a subtype of super_klass.  EAX holds the super_klass.  Blows ECX

   124   // and EDI.  Register sub_klass cannot be any of the above.

   125   void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );

   126 

   127   // Dispatching

   128   void dispatch_prolog(TosState state, int step = 0);

   129   void dispatch_epilog(TosState state, int step = 0);

   130   void dispatch_only(TosState state);                      // dispatch via rbx, (assume rbx, is loaded already)

   131   void dispatch_only_normal(TosState state);               // dispatch normal table via rbx, (assume rbx, is loaded already)

   132   void dispatch_only_noverify(TosState state);

   133   void dispatch_next(TosState state, int step = 0);        // load rbx, from [esi + step] and dispatch via rbx,

   134   void dispatch_via (TosState state, address* table);      // load rbx, from [esi] and dispatch via rbx, and table

   135 

   136 

   137   // jump to an invoked target

   138   void prepare_to_jump_from_interpreted();

   139   void jump_from_interpreted(Register method, Register temp);

   140 

   141   // Returning from interpreted functions

   142   //

   143   // Removes the current activation (incl. unlocking of monitors)

   144   // and sets up the return address.  This code is also used for

   145   // exception unwindwing. In that case, we do not want to throw

   146   // IllegalMonitorStateExceptions, since that might get us into an

   147   // infinite rethrow exception loop.

   148   // Additionally this code is used for popFrame and earlyReturn.

   149   // In popFrame case we want to skip throwing an exception,

   150   // installing an exception, and notifying jvmdi.

   151   // In earlyReturn case we only want to skip throwing an exception

   152   // and installing an exception.

   153   void remove_activation(TosState state, Register ret_addr,

   154                          bool throw_monitor_exception = true,

   155                          bool install_monitor_exception = true,

   156                          bool notify_jvmdi = true);

   157 #endif /* !CC_INTERP */

   158   void get_method_counters(Register method, Register mcs, Label& skip);

   159 

   160   // Debugging

   161   void verify_oop(Register reg, TosState state = atos);    // only if +VerifyOops && state == atos

   162 #ifndef CC_INTERP

   163   void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU  && (state == ftos || state == dtos)

   164 

   165 #endif /* !CC_INTERP */

   166 

   167   // Object locking

   168   void lock_object  (Register lock_reg);

   169   void unlock_object(Register lock_reg);

   170 

   171 #ifndef CC_INTERP

   172 

   173   // Interpreter profiling operations

   174   void set_method_data_pointer_for_bcp();

   175   void test_method_data_pointer(Register mdp, Label& zero_continue);

   176   void verify_method_data_pointer();

   177 

   178   void set_mdp_data_at(Register mdp_in, int constant, Register value);

   179   void increment_mdp_data_at(Address data, bool decrement = false);

   180   void increment_mdp_data_at(Register mdp_in, int constant,

   181                              bool decrement = false);

   182   void increment_mdp_data_at(Register mdp_in, Register reg, int constant,

   183                              bool decrement = false);

   184   void increment_mask_and_jump(Address counter_addr,

   185                                int increment, Address mask,

   186                                Register scratch, bool preloaded,

   187                                Condition cond, Label* where);

   188   void set_mdp_flag_at(Register mdp_in, int flag_constant);

   189   void test_mdp_data_at(Register mdp_in, int offset, Register value,

   190                         Register test_value_out,

   191                         Label& not_equal_continue);

   192 

   193   void record_klass_in_profile(Register receiver, Register mdp,

   194                                Register reg2, bool is_virtual_call);

   195   void record_klass_in_profile_helper(Register receiver, Register mdp,

   196                                       Register reg2, int start_row,

   197                                       Label& done, bool is_virtual_call);

   198 

   199   void update_mdp_by_offset(Register mdp_in, int offset_of_offset);

   200   void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);

   201   void update_mdp_by_constant(Register mdp_in, int constant);

   202   void update_mdp_for_ret(Register return_bci);

   203 

   204   void profile_taken_branch(Register mdp, Register bumped_count);

   205   void profile_not_taken_branch(Register mdp);

   206   void profile_call(Register mdp);

   207   void profile_final_call(Register mdp);

   208   void profile_virtual_call(Register receiver, Register mdp, Register scratch2,

   209                             bool receiver_can_be_null = false);

   210   void profile_ret(Register return_bci, Register mdp);

   211   void profile_null_seen(Register mdp);

   212   void profile_typecheck(Register mdp, Register klass, Register scratch);

   213   void profile_typecheck_failed(Register mdp);

   214   void profile_switch_default(Register mdp);

   215   void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);

   216 

   217 #endif /* !CC_INTERP */

   218 

   219   typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;

   220 

   221   // support for jvmti

   222   void notify_method_entry();

   223   void notify_method_exit(TosState state, NotifyMethodExitMode mode);