1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP
27 #define CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP
28
29 #include "asm/macroAssembler.hpp"
30 #include "asm/macroAssembler.inline.hpp"
31 #include "interpreter/invocationCounter.hpp"
32 #include "runtime/frame.hpp"
33
34 // This file specializes the assember with interpreter-specific macros
35
36
37 class InterpreterMacroAssembler: public MacroAssembler {
38 #ifndef CC_INTERP
39 protected:
40
41 protected:
42 // Interpreter specific version of call_VM_base
43 virtual void call_VM_leaf_base(address entry_point,
44 int number_of_arguments);
45
46 virtual void call_VM_base(Register oop_result,
47 Register java_thread,
48 Register last_java_sp,
49 address entry_point,
50 int number_of_arguments,
51 bool check_exceptions);
52
53 virtual void check_and_handle_popframe(Register java_thread);
54 virtual void check_and_handle_earlyret(Register java_thread);
55
56 // base routine for all dispatches
57 void dispatch_base(TosState state, address* table, bool verifyoop = true);
58 #endif // CC_INTERP
59
60 public:
61 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
62
63 void load_earlyret_value(TosState state);
64
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 // Interpreter-specific registers
75 void save_bcp() {
76 str(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize));
77 }
78
79 void restore_bcp() {
80 ldr(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize));
81 }
82
83 void restore_locals() {
84 ldr(rlocals, Address(rfp, frame::interpreter_frame_locals_offset * wordSize));
85 }
86
87 void restore_constant_pool_cache() {
88 ldr(rcpool, Address(rfp, frame::interpreter_frame_cache_offset * wordSize));
89 }
90
91 void get_dispatch();
92
93 // Helpers for runtime call arguments/results
94
95 // Helpers for runtime call arguments/results
96 void get_method(Register reg) {
97 ldr(reg, Address(rfp, frame::interpreter_frame_method_offset * wordSize));
98 }
99
100 void get_const(Register reg) {
101 get_method(reg);
102 ldr(reg, Address(reg, in_bytes(Method::const_offset())));
103 }
104
105 void get_constant_pool(Register reg) {
106 get_const(reg);
107 ldr(reg, Address(reg, in_bytes(ConstMethod::constants_offset())));
108 }
109
110 void get_constant_pool_cache(Register reg) {
111 get_constant_pool(reg);
112 ldr(reg, Address(reg, ConstantPool::cache_offset_in_bytes()));
113 }
114
115 void get_cpool_and_tags(Register cpool, Register tags) {
116 get_constant_pool(cpool);
117 ldr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));
118 }
119
120 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
121 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
122 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));
123 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
124 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
125 void get_method_counters(Register method, Register mcs, Label& skip);
126
127 // load cpool->resolved_references(index);
128 void load_resolved_reference_at_index(Register result, Register index);
129
130 void pop_ptr(Register r = r0);
131 void pop_i(Register r = r0);
132 void pop_l(Register r = r0);
133 void pop_f(FloatRegister r = v0);
134 void pop_d(FloatRegister r = v0);
135 void push_ptr(Register r = r0);
136 void push_i(Register r = r0);
137 void push_l(Register r = r0);
138 void push_f(FloatRegister r = v0);
139 void push_d(FloatRegister r = v0);
140
141 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
142
143 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
144
145 void pop(TosState state); // transition vtos -> state
146 void push(TosState state); // transition state -> vtos
147
148 void pop(RegSet regs, Register stack) { ((MacroAssembler*)this)->pop(regs, stack); }
149 void push(RegSet regs, Register stack) { ((MacroAssembler*)this)->push(regs, stack); }
150
151 void empty_expression_stack() {
152 ldr(esp, Address(rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
153 // NULL last_sp until next java call
154 str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
155 }
156
157 // Helpers for swap and dup
158 void load_ptr(int n, Register val);
159 void store_ptr(int n, Register val);
160
161 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
162 // a subtype of super_klass.
163 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
164
165 // Dispatching
166 void dispatch_prolog(TosState state, int step = 0);
167 void dispatch_epilog(TosState state, int step = 0);
168 // dispatch via rscratch1
169 void dispatch_only(TosState state);
170 // dispatch normal table via rscratch1 (assume rscratch1 is loaded already)
171 void dispatch_only_normal(TosState state);
172 void dispatch_only_noverify(TosState state);
173 // load rscratch1 from [rbcp + step] and dispatch via rscratch1
174 void dispatch_next(TosState state, int step = 0);
175 // load rscratch1 from [esi] and dispatch via rscratch1 and table
176 void dispatch_via (TosState state, address* table);
177
178 // jump to an invoked target
179 void prepare_to_jump_from_interpreted();
180 void jump_from_interpreted(Register method, Register temp);
181
182
183 // Returning from interpreted functions
184 //
185 // Removes the current activation (incl. unlocking of monitors)
186 // and sets up the return address. This code is also used for
187 // exception unwindwing. In that case, we do not want to throw
188 // IllegalMonitorStateExceptions, since that might get us into an
189 // infinite rethrow exception loop.
190 // Additionally this code is used for popFrame and earlyReturn.
191 // In popFrame case we want to skip throwing an exception,
192 // installing an exception, and notifying jvmdi.
193 // In earlyReturn case we only want to skip throwing an exception
194 // and installing an exception.
195 void remove_activation(TosState state,
196 bool throw_monitor_exception = true,
197 bool install_monitor_exception = true,
198 bool notify_jvmdi = true);
199 #endif // CC_INTERP
200
201 // FIXME: Give us a valid frame at a null check.
202 virtual void null_check(Register reg, int offset = -1) {
203 // #ifdef ASSERT
204 // save_bcp();
205 // set_last_Java_frame(esp, rfp, (address) pc());
206 // #endif
207 MacroAssembler::null_check(reg, offset);
208 // #ifdef ASSERT
209 // reset_last_Java_frame(true, false);
210 // #endif
211 }
212
213 // Object locking
214 void lock_object (Register lock_reg);
215 void unlock_object(Register lock_reg);
216
217 #ifndef CC_INTERP
218
219 // Interpreter profiling operations
220 void set_method_data_pointer_for_bcp();
221 void test_method_data_pointer(Register mdp, Label& zero_continue);
222 void verify_method_data_pointer();
223
224 void set_mdp_data_at(Register mdp_in, int constant, Register value);
225 void increment_mdp_data_at(Address data, bool decrement = false);
226 void increment_mdp_data_at(Register mdp_in, int constant,
227 bool decrement = false);
228 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
229 bool decrement = false);
230 void increment_mask_and_jump(Address counter_addr,
231 int increment, Address mask,
232 Register scratch, Register scratch2,
233 bool preloaded, Condition cond,
234 Label* where);
235 void set_mdp_flag_at(Register mdp_in, int flag_constant);
236 void test_mdp_data_at(Register mdp_in, int offset, Register value,
237 Register test_value_out,
238 Label& not_equal_continue);
239
240 void record_klass_in_profile(Register receiver, Register mdp,
241 Register reg2, bool is_virtual_call);
242 void record_klass_in_profile_helper(Register receiver, Register mdp,
243 Register reg2, int start_row,
244 Label& done, bool is_virtual_call);
245
246 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
247 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
248 void update_mdp_by_constant(Register mdp_in, int constant);
249 void update_mdp_for_ret(Register return_bci);
250
251 void profile_taken_branch(Register mdp, Register bumped_count);
252 void profile_not_taken_branch(Register mdp);
253 void profile_call(Register mdp);
254 void profile_final_call(Register mdp);
255 void profile_virtual_call(Register receiver, Register mdp,
256 Register scratch2,
257 bool receiver_can_be_null = false);
258 void profile_ret(Register return_bci, Register mdp);
259 void profile_null_seen(Register mdp);
260 void profile_typecheck(Register mdp, Register klass, Register scratch);
261 void profile_typecheck_failed(Register mdp);
262 void profile_switch_default(Register mdp);
263 void profile_switch_case(Register index_in_scratch, Register mdp,
264 Register scratch2);
265
266 void profile_obj_type(Register obj, const Address& mdo_addr);
267 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual);
268 void profile_return_type(Register mdp, Register ret, Register tmp);
269 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2);
270
271 // Debugging
272 // only if +VerifyOops && state == atos
273 void verify_oop(Register reg, TosState state = atos);
274 // only if +VerifyFPU && (state == ftos || state == dtos)
275 void verify_FPU(int stack_depth, TosState state = ftos);
276
277 #endif // !CC_INTERP
278
279 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
280
281 // support for jvmti/dtrace
282 void notify_method_entry();
283 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
284
285 virtual void _call_Unimplemented(address call_site) {
286 save_bcp();
287 set_last_Java_frame(esp, rfp, (address) pc(), rscratch1);
288 MacroAssembler::_call_Unimplemented(call_site);
289 }
290 };
291
292 #endif // CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP