1 /*
2 * Copyright (c) 1997, 2012, 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 CPU_X86_VM_INTERP_MASM_X86_32_HPP
26 #define CPU_X86_VM_INTERP_MASM_X86_32_HPP
27
28 #include "assembler_x86.inline.hpp"
29 #include "interpreter/invocationCounter.hpp"
30
31 // This file specializes the assember with interpreter-specific macros
32
33
34 class InterpreterMacroAssembler: public MacroAssembler {
35 #ifndef CC_INTERP
36 protected:
37 // Interpreter specific version of call_VM_base
38 virtual void call_VM_leaf_base(
39 address entry_point,
40 int number_of_arguments
41 );
42
43 virtual void call_VM_base(
44 Register oop_result,
45 Register java_thread,
46 Register last_java_sp,
47 address entry_point,
48 int number_of_arguments,
49 bool check_exceptions
50 );
51
52 virtual void check_and_handle_popframe(Register java_thread);
53 virtual void check_and_handle_earlyret(Register java_thread);
54
55 // base routine for all dispatches
56 void dispatch_base(TosState state, address* table, bool verifyoop = true);
57 #endif /* CC_INTERP */
58
59 public:
60 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
61
62 void load_earlyret_value(TosState state);
63
64 // Interpreter-specific registers
65 #ifdef CC_INTERP
66 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
67 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
68
69 // Helpers for runtime call arguments/results
70 void get_method(Register reg);
71
72 #else
73
74 void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
75 void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
76 void restore_locals() { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
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 void get_const(Register reg) { get_method(reg); movptr(reg, Address(reg, methodOopDesc::const_offset())); }
81 void get_constant_pool(Register reg) { get_const(reg); movptr(reg, Address(reg, constMethodOopDesc::constants_offset())); }
82 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
83 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
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 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
89 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
90
91 // Expression stack
92 void f2ieee(); // truncate ftos to 32bits
93 void d2ieee(); // truncate dtos to 64bits
94
95 void pop_ptr(Register r = rax);
96 void pop_i(Register r = rax);
97 void pop_l(Register lo = rax, Register hi = rdx);
98 void pop_f();
99 void pop_d();
100
101 void push_ptr(Register r = rax);
102 void push_i(Register r = rax);
103 void push_l(Register lo = rax, Register hi = rdx);
104 void push_d(Register r = rax);
105 void push_f();
106
107 void pop(TosState state); // transition vtos -> state
108 void push(TosState state); // transition state -> vtos
109
110 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
111
112 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
113 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
114
115 // These are dummies to prevent surprise implicit conversions to Register
116 void pop(void* v ); // Add unimplemented ambiguous method
117 void push(void* v ); // Add unimplemented ambiguous method
118
119 void empty_expression_stack() {
120 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
121 // NULL last_sp until next java call
122 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
123 }
124
125 // Helpers for swap and dup
126 void load_ptr(int n, Register val);
127 void store_ptr(int n, Register val);
128
129 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
130 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
131 // and EDI. Register sub_klass cannot be any of the above.
132 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
133
134 // Dispatching
135 void dispatch_prolog(TosState state, int step = 0);
136 void dispatch_epilog(TosState state, int step = 0);
137 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
138 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
139 void dispatch_only_noverify(TosState state);
140 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
141 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
142
143
144 // jump to an invoked target
145 void prepare_to_jump_from_interpreted();
146 void jump_from_interpreted(Register method, Register temp);
147
148 // Returning from interpreted functions
149 //
150 // Removes the current activation (incl. unlocking of monitors)
151 // and sets up the return address. This code is also used for
152 // exception unwindwing. In that case, we do not want to throw
153 // IllegalMonitorStateExceptions, since that might get us into an
154 // infinite rethrow exception loop.
155 // Additionally this code is used for popFrame and earlyReturn.
156 // In popFrame case we want to skip throwing an exception,
157 // installing an exception, and notifying jvmdi.
158 // In earlyReturn case we only want to skip throwing an exception
159 // and installing an exception.
160 void remove_activation(TosState state, Register ret_addr,
161 bool throw_monitor_exception = true,
162 bool install_monitor_exception = true,
163 bool notify_jvmdi = true);
164 #endif /* !CC_INTERP */
165
166 // Debugging
167 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
168 #ifndef CC_INTERP
169 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
170
171 #endif /* !CC_INTERP */
172
173 // Object locking
174 void lock_object (Register lock_reg);
175 void unlock_object(Register lock_reg);
176
177 #ifndef CC_INTERP
178
179 // Interpreter profiling operations
180 void set_method_data_pointer_for_bcp();
181 void test_method_data_pointer(Register mdp, Label& zero_continue);
182 void verify_method_data_pointer();
183
184 void set_mdp_data_at(Register mdp_in, int constant, Register value);
185 void increment_mdp_data_at(Address data, bool decrement = false);
186 void increment_mdp_data_at(Register mdp_in, int constant,
187 bool decrement = false);
188 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
189 bool decrement = false);
190 void increment_mask_and_jump(Address counter_addr,
191 int increment, int mask,
192 Register scratch, bool preloaded,
193 Condition cond, Label* where);
194 void set_mdp_flag_at(Register mdp_in, int flag_constant);
195 void test_mdp_data_at(Register mdp_in, int offset, Register value,
196 Register test_value_out,
197 Label& not_equal_continue);
198
199 void record_klass_in_profile(Register receiver, Register mdp,
200 Register reg2, bool is_virtual_call);
201 void record_klass_in_profile_helper(Register receiver, Register mdp,
202 Register reg2, int start_row,
203 Label& done, bool is_virtual_call);
204
205 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
206 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
207 void update_mdp_by_constant(Register mdp_in, int constant);
208 void update_mdp_for_ret(Register return_bci);
209
210 void profile_taken_branch(Register mdp, Register bumped_count);
211 void profile_not_taken_branch(Register mdp);
212 void profile_call(Register mdp);
213 void profile_final_call(Register mdp);
214 void profile_virtual_call(Register receiver, Register mdp, Register scratch2,
215 bool receiver_can_be_null = false);
216 void profile_ret(Register return_bci, Register mdp);
217 void profile_null_seen(Register mdp);
218 void profile_typecheck(Register mdp, Register klass, Register scratch);
219 void profile_typecheck_failed(Register mdp);
220 void profile_switch_default(Register mdp);
221 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
222
223 #endif /* !CC_INTERP */
224
225 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
226
227 // support for jvmti
228 void notify_method_entry();
229 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
230
231 };
232
233 #endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP