1 /*
2 * Copyright (c) 1997, 2013, 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_bcx_offset * wordSize), rsi); }
65 void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_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 void get_method_counters(Register method, Register mcs, Label& skip);
81
82 // load cpool->resolved_references(index);
83 void load_resolved_reference_at_index(Register result, Register index);
84
85 // Expression stack
86 void f2ieee(); // truncate ftos to 32bits
87 void d2ieee(); // truncate dtos to 64bits
88
89 void pop_ptr(Register r = rax);
90 void pop_i(Register r = rax);
91 void pop_l(Register lo = rax, Register hi = rdx);
92 void pop_f();
93 void pop_d();
94
95 void push_ptr(Register r = rax);
96 void push_i(Register r = rax);
97 void push_l(Register lo = rax, Register hi = rdx);
98 void push_d(Register r = rax);
99 void push_f();
100
101 void pop(TosState state); // transition vtos -> state
102 void push(TosState state); // transition state -> vtos
103
104 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
105
106 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
107 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
108
109 // These are dummies to prevent surprise implicit conversions to Register
110 void pop(void* v ); // Add unimplemented ambiguous method
111 void push(void* v ); // Add unimplemented ambiguous method
112
113 void empty_expression_stack() {
114 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
115 // NULL last_sp until next java call
116 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
117 }
118
119 // Helpers for swap and dup
120 void load_ptr(int n, Register val);
121 void store_ptr(int n, Register val);
122
123 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
124 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
125 // and EDI. Register sub_klass cannot be any of the above.
126 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
127
128 // Dispatching
129 void dispatch_prolog(TosState state, int step = 0);
130 void dispatch_epilog(TosState state, int step = 0);
131 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
132 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
133 void dispatch_only_noverify(TosState state);
134 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
135 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
136
137
138 // jump to an invoked target
139 void prepare_to_jump_from_interpreted();
140 void jump_from_interpreted(Register method, Register temp);
141
142 // Returning from interpreted functions
143 //
144 // Removes the current activation (incl. unlocking of monitors)
145 // and sets up the return address. This code is also used for
146 // exception unwindwing. In that case, we do not want to throw
147 // IllegalMonitorStateExceptions, since that might get us into an
148 // infinite rethrow exception loop.
149 // Additionally this code is used for popFrame and earlyReturn.
150 // In popFrame case we want to skip throwing an exception,
151 // installing an exception, and notifying jvmdi.
152 // In earlyReturn case we only want to skip throwing an exception
153 // and installing an exception.
154 void remove_activation(TosState state, Register ret_addr,
155 bool throw_monitor_exception = true,
156 bool install_monitor_exception = true,
157 bool notify_jvmdi = true);
158 #endif /* !CC_INTERP */
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, int 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);