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,

 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);

   1 /*
   2  * Copyright (c) 2003, 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(address entry_point,
  29                                  int number_of_arguments);


  30 
  31   virtual void call_VM_base(Register oop_result,

  32                             Register java_thread,
  33                             Register last_java_sp,
  34                             address  entry_point,
  35                             int number_of_arguments,
  36                             bool check_exceptions);

  37 
  38   virtual void check_and_handle_popframe(Register java_thread);
  39   virtual void check_and_handle_earlyret(Register java_thread);
  40 
  41   // base routine for all dispatches
  42   void dispatch_base(TosState state, address* table, bool verifyoop = true);
  43 #endif // CC_INTERP
  44 
  45  public:
  46   InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code),
  47     _locals_register(LP64_ONLY(r14) NOT_LP64(rdi)),
  48     _bcp_register(LP64_ONLY(r13) NOT_LP64(rsi)) {}
  49 
  50   void load_earlyret_value(TosState state);
  51 

  52 #ifdef CC_INTERP
  53   void save_bcp()                                          { /*  not needed in c++ interpreter and harmless */ }
  54   void restore_bcp()                                       { /*  not needed in c++ interpreter and harmless */ }
  55 
  56   // Helpers for runtime call arguments/results
  57   void get_method(Register reg);
  58 
  59 #else
  60 
  61   // Interpreter-specific registers
  62   void save_bcp() {
  63     movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), _bcp_register);
  64   }
  65 
  66   void restore_bcp() {
  67     movptr(_bcp_register, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize));
  68   }
  69 
  70   void restore_locals() {
  71     movptr(_locals_register, Address(rbp, frame::interpreter_frame_locals_offset * wordSize));
  72   }
  73 
  74   // Helpers for runtime call arguments/results
  75   void get_method(Register reg) {
  76     movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize));
  77   }
  78 
  79   void get_const(Register reg) {
  80     get_method(reg);
  81     movptr(reg, Address(reg, Method::const_offset()));
  82   }
  83 
  84   void get_constant_pool(Register reg) {
  85     get_const(reg);
  86     movptr(reg, Address(reg, ConstMethod::constants_offset()));
  87   }
  88 
  89   void get_constant_pool_cache(Register reg) {
  90     get_constant_pool(reg);
  91     movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes()));
  92   }
  93 
  94   void get_cpool_and_tags(Register cpool, Register tags) {
  95     get_constant_pool(cpool);
  96     movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));
  97   }
  98 
  99   void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
 100   void get_cache_and_index_at_bcp(Register cache,
 101                                   Register index, 
 102                                   int bcp_offset, 
 103                                   size_t index_size = sizeof(u2));
 104   void get_cache_and_index_and_bytecode_at_bcp(Register cache, 
 105                                                Register index, 
 106                                                Register bytecode, 
 107                                                int byte_no, 
 108                                                int bcp_offset, 
 109                                                size_t index_size = sizeof(u2));
 110   void get_cache_entry_pointer_at_bcp(Register cache, 
 111                                       Register tmp, 
 112                                       int bcp_offset, 
 113                                       size_t index_size = sizeof(u2));
 114   void get_cache_index_at_bcp(Register index, 
 115                               int bcp_offset, 
 116                               size_t index_size = sizeof(u2));
 117 
 118   // load cpool->resolved_references(index);
 119   void load_resolved_reference_at_index(Register result, Register index);
 120 
 121   NOT_LP64(void f2ieee();)        // truncate ftos to 32bits
 122   NOT_LP64(void d2ieee();)        // truncate dtos to 64bits

 123 
 124   // Expression stack
 125   void pop_ptr(Register r = rax);
 126   void pop_i(Register r = rax);
 127   void push_ptr(Register r = rax);
 128   void push_i(Register r = rax);
 129 
 130 #ifdef _LP64
 131   void pop_l(Register r = rax);
 132   void pop_f(XMMRegister r = xmm0);
 133   void pop_d(XMMRegister r = xmm0);
 134   void push_l(Register r = rax);
 135   void push_f(XMMRegister r = xmm0);
 136   void push_d(XMMRegister r = xmm0);
 137 #else
 138   void pop_l(Register lo = rax, Register hi = rdx);
 139   void pop_f();
 140   void pop_d();
 141 


 142   void push_l(Register lo = rax, Register hi = rdx);
 143   void push_d(Register r = rax);
 144   void push_f();
 145 #endif // _LP64
 146 
 147   void pop(Register r) { ((MacroAssembler*)this)->pop(r); }
 148   void push(Register r) { ((MacroAssembler*)this)->push(r); }
 149   void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
 150 
 151   void pop(TosState state);        // transition vtos -> state
 152   void push(TosState state);       // transition state -> vtos
 153 





 154   // These are dummies to prevent surprise implicit conversions to Register
 155   void pop(void* v); // Add unimplemented ambiguous method
 156   void push(void* v);   // Add unimplemented ambiguous method
 157 
 158   void empty_expression_stack() {
 159     movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
 160     // NULL last_sp until next java call
 161     movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
 162   }
 163 
 164   // Helpers for swap and dup
 165   void load_ptr(int n, Register val);
 166   void store_ptr(int n, Register val);
 167 
 168   // Generate a subtype check: branch to ok_is_subtype if sub_klass is
 169   // a subtype of super_klass.

 170   void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
 171 
 172   // Dispatching
 173   void dispatch_prolog(TosState state, int step = 0);
 174   void dispatch_epilog(TosState state, int step = 0);
 175   // dispatch via rbx (assume rbx is loaded already)
 176   void dispatch_only(TosState state);
 177   // dispatch normal table via rbx (assume rbx is loaded already)
 178   void dispatch_only_normal(TosState state);
 179   void dispatch_only_noverify(TosState state);
 180   // load rbx from [_bcp_register + step] and dispatch via rbx
 181   void dispatch_next(TosState state, int step = 0);
 182   // load rbx from [_bcp_register] and dispatch via rbx and table
 183   void dispatch_via (TosState state, address* table);
 184 
 185   // jump to an invoked target
 186   void prepare_to_jump_from_interpreted();
 187   void jump_from_interpreted(Register method, Register temp);
 188 
 189   // Returning from interpreted functions
 190   //
 191   // Removes the current activation (incl. unlocking of monitors)
 192   // and sets up the return address.  This code is also used for
 193   // exception unwindwing. In that case, we do not want to throw
 194   // IllegalMonitorStateExceptions, since that might get us into an
 195   // infinite rethrow exception loop.
 196   // Additionally this code is used for popFrame and earlyReturn.
 197   // In popFrame case we want to skip throwing an exception,
 198   // installing an exception, and notifying jvmdi.
 199   // In earlyReturn case we only want to skip throwing an exception
 200   // and installing an exception.
 201   void remove_activation(TosState state, Register ret_addr,
 202                          bool throw_monitor_exception = true,
 203                          bool install_monitor_exception = true,
 204                          bool notify_jvmdi = true);
 205 #endif // CC_INTERP
 206   void get_method_counters(Register method, Register mcs, Label& skip);
 207 







 208   // Object locking
 209   void lock_object  (Register lock_reg);
 210   void unlock_object(Register lock_reg);
 211 
 212 #ifndef CC_INTERP
 213 
 214   // Interpreter profiling operations
 215   void set_method_data_pointer_for_bcp();
 216   void test_method_data_pointer(Register mdp, Label& zero_continue);
 217   void verify_method_data_pointer();
 218 
 219   void set_mdp_data_at(Register mdp_in, int constant, Register value);
 220   void increment_mdp_data_at(Address data, bool decrement = false);
 221   void increment_mdp_data_at(Register mdp_in, int constant,
 222                              bool decrement = false);
 223   void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
 224                              bool decrement = false);
 225   void increment_mask_and_jump(Address counter_addr,
 226                                int increment, Address mask,
 227                                Register scratch, bool preloaded,

 229   void set_mdp_flag_at(Register mdp_in, int flag_constant);
 230   void test_mdp_data_at(Register mdp_in, int offset, Register value,
 231                         Register test_value_out,
 232                         Label& not_equal_continue);
 233 
 234   void record_klass_in_profile(Register receiver, Register mdp,
 235                                Register reg2, bool is_virtual_call);
 236   void record_klass_in_profile_helper(Register receiver, Register mdp,
 237                                       Register reg2, int start_row,
 238                                       Label& done, bool is_virtual_call);
 239 
 240   void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
 241   void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
 242   void update_mdp_by_constant(Register mdp_in, int constant);
 243   void update_mdp_for_ret(Register return_bci);
 244 
 245   void profile_taken_branch(Register mdp, Register bumped_count);
 246   void profile_not_taken_branch(Register mdp);
 247   void profile_call(Register mdp);
 248   void profile_final_call(Register mdp);
 249   void profile_virtual_call(Register receiver, Register mdp,
 250                             Register scratch2,
 251                             bool receiver_can_be_null = false);
 252   void profile_ret(Register return_bci, Register mdp);
 253   void profile_null_seen(Register mdp);
 254   void profile_typecheck(Register mdp, Register klass, Register scratch);
 255   void profile_typecheck_failed(Register mdp);
 256   void profile_switch_default(Register mdp);
 257   void profile_switch_case(Register index_in_scratch, Register mdp,
 258                            Register scratch2);
 259 
 260   // Debugging
 261   // only if +VerifyOops && state == atos
 262   void verify_oop(Register reg, TosState state = atos);
 263   // only if +VerifyFPU  && (state == ftos || state == dtos)
 264   void verify_FPU(int stack_depth, TosState state = ftos);
 265 
 266 #endif // !CC_INTERP
 267 
 268   typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
 269 
 270   // support for jvmti/dtrace
 271   void notify_method_entry();
 272   void notify_method_exit(TosState state, NotifyMethodExitMode mode);