interp_masm_x86_32.hpp 10.4 KB
Newer Older
D
duke 已提交
1
/*
2
 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
D
duke 已提交
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
 * 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.
 *
19 20 21
 * 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.
D
duke 已提交
22 23 24
 *
 */

25 26 27 28 29 30
#ifndef CPU_X86_VM_INTERP_MASM_X86_32_HPP
#define CPU_X86_VM_INTERP_MASM_X86_32_HPP

#include "assembler_x86.inline.hpp"
#include "interpreter/invocationCounter.hpp"

D
duke 已提交
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
// 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

74 75 76
  void save_bcp()                                          { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
  void restore_bcp()                                       { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
  void restore_locals()                                    { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
D
duke 已提交
77 78

  // Helpers for runtime call arguments/results
79
  void get_method(Register reg)                            { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
80 81
  void get_const(Register reg)                             { get_method(reg); movptr(reg, Address(reg, methodOopDesc::const_offset())); }
  void get_constant_pool(Register reg)                     { get_const(reg); movptr(reg, Address(reg, constMethodOopDesc::constants_offset())); }
82 83
  void get_constant_pool_cache(Register reg)               { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
  void get_cpool_and_tags(Register cpool, Register tags)   { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
D
duke 已提交
84 85
  }
  void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
86
  void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
87
  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));
88 89
  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 index, int bcp_offset, size_t index_size = sizeof(u2));
D
duke 已提交
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109

  // Expression stack
  void f2ieee();                                           // truncate ftos to 32bits
  void d2ieee();                                           // truncate dtos to 64bits

  void pop_ptr(Register r = rax);
  void pop_i(Register r = rax);
  void pop_l(Register lo = rax, Register hi = rdx);
  void pop_f();
  void pop_d();

  void push_ptr(Register r = rax);
  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

110 111 112 113 114 115 116 117 118
  void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }

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

  // These are dummies to prevent surprise implicit conversions to Register
  void pop(void* v ); // Add unimplemented ambiguous method
  void push(void* v );   // Add unimplemented ambiguous method

119 120 121 122
  void empty_expression_stack() {
    movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
    // NULL last_sp until next java call
    movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
D
duke 已提交
123 124
  }

125 126 127
  // Helpers for swap and dup
  void load_ptr(int n, Register val);
  void store_ptr(int n, Register val);
D
duke 已提交
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144

  // 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
145
  void prepare_to_jump_from_interpreted();
D
duke 已提交
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
  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);
I
iveresov 已提交
190 191 192 193
  void increment_mask_and_jump(Address counter_addr,
                               int increment, int mask,
                               Register scratch, bool preloaded,
                               Condition cond, Label* where);
D
duke 已提交
194 195 196 197 198 199
  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,
200
                               Register reg2, bool is_virtual_call);
D
duke 已提交
201
  void record_klass_in_profile_helper(Register receiver, Register mdp,
202 203
                                      Register reg2, int start_row,
                                      Label& done, bool is_virtual_call);
D
duke 已提交
204 205 206 207 208 209 210 211 212 213

  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);
214 215
  void profile_virtual_call(Register receiver, Register mdp, Register scratch2,
                            bool receiver_can_be_null = false);
D
duke 已提交
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231
  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);

};
232 233

#endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP