1 /*
2 * Copyright (c) 1997, 2010, 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_constant_pool(Register reg) { get_method(reg); movptr(reg, Address(reg, methodOopDesc::constants_offset())); }
81 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
82 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
83 }
84 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
85 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
86 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
87 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
88
89 // Expression stack
90 void f2ieee(); // truncate ftos to 32bits
91 void d2ieee(); // truncate dtos to 64bits
92
93 void pop_ptr(Register r = rax);
94 void pop_i(Register r = rax);
95 void pop_l(Register lo = rax, Register hi = rdx);
96 void pop_f();
97 void pop_d();
98
99 void push_ptr(Register r = rax);
100 void push_i(Register r = rax);
101 void push_l(Register lo = rax, Register hi = rdx);
102 void push_d(Register r = rax);
103 void push_f();
104
105 void pop(TosState state); // transition vtos -> state
106 void push(TosState state); // transition state -> vtos
107
108 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
109
110 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
111 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
112
113 // These are dummies to prevent surprise implicit conversions to Register
114 void pop(void* v ); // Add unimplemented ambiguous method
115 void push(void* v ); // Add unimplemented ambiguous method
116
117 void empty_expression_stack() {
118 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
119 // NULL last_sp until next java call
120 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
121 }
122
123 // Helpers for swap and dup
124 void load_ptr(int n, Register val);
125 void store_ptr(int n, Register val);
126
127 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
128 void super_call_VM_leaf(address entry_point);
129 void super_call_VM_leaf(address entry_point, Register arg_1);
130 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
131 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
132
133 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
134 // a subtype of super_klass. EAX holds the super_klass. Blows ECX
135 // and EDI. Register sub_klass cannot be any of the above.
136 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
137
138 // Dispatching
139 void dispatch_prolog(TosState state, int step = 0);
140 void dispatch_epilog(TosState state, int step = 0);
141 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
142 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
143 void dispatch_only_noverify(TosState state);
144 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
145 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
146
147
148 // jump to an invoked target
149 void prepare_to_jump_from_interpreted();
150 void jump_from_interpreted(Register method, Register temp);
151
152 // Returning from interpreted functions
153 //
154 // Removes the current activation (incl. unlocking of monitors)
155 // and sets up the return address. This code is also used for
156 // exception unwindwing. In that case, we do not want to throw
157 // IllegalMonitorStateExceptions, since that might get us into an
158 // infinite rethrow exception loop.
159 // Additionally this code is used for popFrame and earlyReturn.
160 // In popFrame case we want to skip throwing an exception,
161 // installing an exception, and notifying jvmdi.
162 // In earlyReturn case we only want to skip throwing an exception
163 // and installing an exception.
164 void remove_activation(TosState state, Register ret_addr,
165 bool throw_monitor_exception = true,
166 bool install_monitor_exception = true,
167 bool notify_jvmdi = true);
168 #endif /* !CC_INTERP */
169
170 // Debugging
171 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
172 #ifndef CC_INTERP
173 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
174
175 #endif /* !CC_INTERP */
176
177 // Object locking
178 void lock_object (Register lock_reg);
179 void unlock_object(Register lock_reg);
180
181 #ifndef CC_INTERP
182
183 // Interpreter profiling operations
184 void set_method_data_pointer_for_bcp();
185 void test_method_data_pointer(Register mdp, Label& zero_continue);
186 void verify_method_data_pointer();
187
188 void set_mdp_data_at(Register mdp_in, int constant, Register value);
189 void increment_mdp_data_at(Address data, bool decrement = false);
190 void increment_mdp_data_at(Register mdp_in, int constant,
191 bool decrement = false);
192 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
193 bool decrement = false);
194 void increment_mask_and_jump(Address counter_addr,
195 int increment, int mask,
196 Register scratch, bool preloaded,
197 Condition cond, Label* where);
198 void set_mdp_flag_at(Register mdp_in, int flag_constant);
199 void test_mdp_data_at(Register mdp_in, int offset, Register value,
200 Register test_value_out,
201 Label& not_equal_continue);
202
203 void record_klass_in_profile(Register receiver, Register mdp,
204 Register reg2, bool is_virtual_call);
205 void record_klass_in_profile_helper(Register receiver, Register mdp,
206 Register reg2, int start_row,
207 Label& done, bool is_virtual_call);
208
209 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
210 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
211 void update_mdp_by_constant(Register mdp_in, int constant);
212 void update_mdp_for_ret(Register return_bci);
213
214 void profile_taken_branch(Register mdp, Register bumped_count);
215 void profile_not_taken_branch(Register mdp);
216 void profile_call(Register mdp);
217 void profile_final_call(Register mdp);
218 void profile_virtual_call(Register receiver, Register mdp, Register scratch2,
219 bool receiver_can_be_null = false);
220 void profile_ret(Register return_bci, Register mdp);
221 void profile_null_seen(Register mdp);
222 void profile_typecheck(Register mdp, Register klass, Register scratch);
223 void profile_typecheck_failed(Register mdp);
224 void profile_switch_default(Register mdp);
225 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
226
227 #endif /* !CC_INTERP */
228
229 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
230
231 // support for jvmti
232 void notify_method_entry();
233 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
234
235 };
236
237 #endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP