1 /*
2 * Copyright (c) 2003, 2011, 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_64_HPP
26 #define CPU_X86_VM_INTERP_MASM_X86_64_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(address entry_point,
39 int number_of_arguments);
40
41 virtual void call_VM_base(Register oop_result,
42 Register java_thread,
43 Register last_java_sp,
44 address entry_point,
45 int number_of_arguments,
46 bool check_exceptions);
47
48 virtual void check_and_handle_popframe(Register java_thread);
49 virtual void check_and_handle_earlyret(Register java_thread);
50
51 // base routine for all dispatches
52 void dispatch_base(TosState state, address* table, bool verifyoop = true);
53 #endif // CC_INTERP
54
55 public:
56 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
57
58 void load_earlyret_value(TosState state);
59
60 #ifdef CC_INTERP
61 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
62 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
63
64 // Helpers for runtime call arguments/results
65 void get_method(Register reg);
66
67 #else
68
69 // Interpreter-specific registers
70 void save_bcp() {
71 movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13);
72 }
73
74 void restore_bcp() {
75 movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize));
76 }
77
78 void restore_locals() {
79 movptr(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize));
80 }
81
82 // Helpers for runtime call arguments/results
83 void get_method(Register reg) {
84 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize));
85 }
86
87 void get_constant_pool(Register reg) {
88 get_method(reg);
89 movptr(reg, Address(reg, methodOopDesc::constants_offset()));
90 }
91
92 void get_constant_pool_cache(Register reg) {
93 get_constant_pool(reg);
94 movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes()));
95 }
96
97 void get_cpool_and_tags(Register cpool, Register tags) {
98 get_constant_pool(cpool);
99 movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
100 }
101
102 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
103 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
104 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));
105 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
106 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
107
108 void pop_ptr(Register r = rax);
109 void pop_i(Register r = rax);
110 void pop_l(Register r = rax);
111 void pop_f(XMMRegister r = xmm0);
112 void pop_d(XMMRegister r = xmm0);
113 void push_ptr(Register r = rax);
114 void push_i(Register r = rax);
115 void push_l(Register r = rax);
116 void push_f(XMMRegister r = xmm0);
117 void push_d(XMMRegister r = xmm0);
118
119 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
120
121 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
122 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
123
124 void pop(TosState state); // transition vtos -> state
125 void push(TosState state); // transition state -> vtos
126
127 void empty_expression_stack() {
128 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
129 // NULL last_sp until next java call
130 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
131 }
132
133 // Helpers for swap and dup
134 void load_ptr(int n, Register val);
135 void store_ptr(int n, Register val);
136
137 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
138 // a subtype of super_klass.
139 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
140
141 // Dispatching
142 void dispatch_prolog(TosState state, int step = 0);
143 void dispatch_epilog(TosState state, int step = 0);
144 // dispatch via ebx (assume ebx is loaded already)
145 void dispatch_only(TosState state);
146 // dispatch normal table via ebx (assume ebx is loaded already)
147 void dispatch_only_normal(TosState state);
148 void dispatch_only_noverify(TosState state);
149 // load ebx from [esi + step] and dispatch via ebx
150 void dispatch_next(TosState state, int step = 0);
151 // load ebx from [esi] and dispatch via ebx and table
152 void dispatch_via (TosState state, address* table);
153
154 // jump to an invoked target
155 void prepare_to_jump_from_interpreted();
156 void jump_from_interpreted(Register method, Register temp);
157
158
159 // Returning from interpreted functions
160 //
161 // Removes the current activation (incl. unlocking of monitors)
162 // and sets up the return address. This code is also used for
163 // exception unwindwing. In that case, we do not want to throw
164 // IllegalMonitorStateExceptions, since that might get us into an
165 // infinite rethrow exception loop.
166 // Additionally this code is used for popFrame and earlyReturn.
167 // In popFrame case we want to skip throwing an exception,
168 // installing an exception, and notifying jvmdi.
169 // In earlyReturn case we only want to skip throwing an exception
170 // and installing an exception.
171 void remove_activation(TosState state, Register ret_addr,
172 bool throw_monitor_exception = true,
173 bool install_monitor_exception = true,
174 bool notify_jvmdi = true);
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,
219 Register scratch2,
220 bool receiver_can_be_null = false);
221 void profile_ret(Register return_bci, Register mdp);
222 void profile_null_seen(Register mdp);
223 void profile_typecheck(Register mdp, Register klass, Register scratch);
224 void profile_typecheck_failed(Register mdp);
225 void profile_switch_default(Register mdp);
226 void profile_switch_case(Register index_in_scratch, Register mdp,
227 Register scratch2);
228
229 // Debugging
230 // only if +VerifyOops && state == atos
231 void verify_oop(Register reg, TosState state = atos);
232 // only if +VerifyFPU && (state == ftos || state == dtos)
233 void verify_FPU(int stack_depth, TosState state = ftos);
234
235 #endif // !CC_INTERP
236
237 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
238
239 // support for jvmti/dtrace
240 void notify_method_entry();
241 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
242 };
243
244 #endif // CPU_X86_VM_INTERP_MASM_X86_64_HPP