1 /*
2 * Copyright (c) 2013, Red Hat Inc.
3 * Copyright (c) 2003, 2011, Oracle and/or its affiliates.
4 * All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #ifndef CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP
28 #define CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP
29
30 #include "asm/macroAssembler.hpp"
31 #include "asm/macroAssembler.inline.hpp"
32 #include "interpreter/invocationCounter.hpp"
33 #include "runtime/frame.hpp"
34
35 // This file specializes the assember with interpreter-specific macros
36
37
38 class InterpreterMacroAssembler: public MacroAssembler {
39 #ifndef CC_INTERP
40 protected:
41
42 protected:
43 // Interpreter specific version of call_VM_base
44 using MacroAssembler::call_VM_leaf_base;
45
46 virtual void call_VM_leaf_base(address entry_point,
47 int number_of_arguments);
48
49 virtual void call_VM_base(Register oop_result,
50 Register java_thread,
51 Register last_java_sp,
52 address entry_point,
53 int number_of_arguments,
54 bool check_exceptions);
55
56 virtual void check_and_handle_popframe(Register java_thread);
57 virtual void check_and_handle_earlyret(Register java_thread);
58
59 // base routine for all dispatches
60 void dispatch_base(TosState state, address* table, bool verifyoop = true);
61 #endif // CC_INTERP
62
63 public:
64 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
65
66 void load_earlyret_value(TosState state);
67
68 #ifdef CC_INTERP
69 void save_bcp() { /* not needed in c++ interpreter and harmless */ }
70 void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
71
72 // Helpers for runtime call arguments/results
73 void get_method(Register reg);
74
75 #else
76
77 // Interpreter-specific registers
78 void save_bcp() {
79 str(rbcp, Address(rfp, frame::interpreter_frame_bcx_offset * wordSize));
80 }
81
82 void restore_bcp() {
83 ldr(rbcp, Address(rfp, frame::interpreter_frame_bcx_offset * wordSize));
84 }
85
86 void restore_locals() {
87 ldr(rlocals, Address(rfp, frame::interpreter_frame_locals_offset * wordSize));
88 }
89
90 void restore_constant_pool_cache() {
91 ldr(rcpool, Address(rfp, frame::interpreter_frame_cache_offset * wordSize));
92 }
93
94 void get_dispatch();
95
96 // Helpers for runtime call arguments/results
97
98 // Helpers for runtime call arguments/results
99 void get_method(Register reg) {
100 ldr(reg, Address(rfp, frame::interpreter_frame_method_offset * wordSize));
101 }
102
103 void get_const(Register reg) {
104 get_method(reg);
105 ldr(reg, Address(reg, in_bytes(Method::const_offset())));
106 }
107
108 void get_constant_pool(Register reg) {
109 get_const(reg);
110 ldr(reg, Address(reg, in_bytes(ConstMethod::constants_offset())));
111 }
112
113 void get_constant_pool_cache(Register reg) {
114 get_constant_pool(reg);
115 ldr(reg, Address(reg, ConstantPool::cache_offset_in_bytes()));
116 }
117
118 void get_cpool_and_tags(Register cpool, Register tags) {
119 get_constant_pool(cpool);
120 ldr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes()));
121 }
122
123 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
124 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
125 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));
126 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
127 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
128 void get_method_counters(Register method, Register mcs, Label& skip);
129
130 // load cpool->resolved_references(index);
131 void load_resolved_reference_at_index(Register result, Register index);
132
133 void pop_ptr(Register r = r0);
134 void pop_i(Register r = r0);
135 void pop_l(Register r = r0);
136 void pop_f(FloatRegister r = v0);
137 void pop_d(FloatRegister r = v0);
138 void push_ptr(Register r = r0);
139 void push_i(Register r = r0);
140 void push_l(Register r = r0);
141 void push_f(FloatRegister r = v0);
142 void push_d(FloatRegister r = v0);
143
144 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
145
146 void push(Register r ) { ((MacroAssembler*)this)->push(r); }
147
148 void pop(TosState state); // transition vtos -> state
149 void push(TosState state); // transition state -> vtos
150
151 void pop(RegSet regs, Register stack) { ((MacroAssembler*)this)->pop(regs, stack); }
152 void push(RegSet regs, Register stack) { ((MacroAssembler*)this)->push(regs, stack); }
153
154 void empty_expression_stack() {
155 ldr(esp, Address(rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
156 // NULL last_sp until next java call
157 str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
158 }
159
160 // Helpers for swap and dup
161 void load_ptr(int n, Register val);
162 void store_ptr(int n, Register val);
163
164 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
165 // a subtype of super_klass.
166 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
167
168 // Dispatching
169 void dispatch_prolog(TosState state, int step = 0);
170 void dispatch_epilog(TosState state, int step = 0);
171 // dispatch via rscratch1
172 void dispatch_only(TosState state);
173 // dispatch normal table via rscratch1 (assume rscratch1 is loaded already)
174 void dispatch_only_normal(TosState state);
175 void dispatch_only_noverify(TosState state);
176 // load rscratch1 from [rbcp + step] and dispatch via rscratch1
177 void dispatch_next(TosState state, int step = 0);
178 // load rscratch1 from [esi] and dispatch via rscratch1 and table
179 void dispatch_via (TosState state, address* table);
180
181 // jump to an invoked target
182 void prepare_to_jump_from_interpreted();
183 void jump_from_interpreted(Register method, Register temp);
184
185
186 // Returning from interpreted functions
187 //
188 // Removes the current activation (incl. unlocking of monitors)
189 // and sets up the return address. This code is also used for
190 // exception unwindwing. In that case, we do not want to throw
191 // IllegalMonitorStateExceptions, since that might get us into an
192 // infinite rethrow exception loop.
193 // Additionally this code is used for popFrame and earlyReturn.
194 // In popFrame case we want to skip throwing an exception,
195 // installing an exception, and notifying jvmdi.
196 // In earlyReturn case we only want to skip throwing an exception
197 // and installing an exception.
198 void remove_activation(TosState state,
199 bool throw_monitor_exception = true,
200 bool install_monitor_exception = true,
201 bool notify_jvmdi = true);
202 #endif // CC_INTERP
203
204 // FIXME: Give us a valid frame at a null check.
205 virtual void null_check(Register reg, int offset = -1) {
206 // #ifdef ASSERT
207 // save_bcp();
208 // set_last_Java_frame(esp, rfp, (address) pc());
209 // #endif
210 MacroAssembler::null_check(reg, offset);
211 // #ifdef ASSERT
212 // reset_last_Java_frame(true);
213 // #endif
214 }
215
216 // Object locking
217 void lock_object (Register lock_reg);
218 void unlock_object(Register lock_reg);
219
220 #ifndef CC_INTERP
221
222 // Interpreter profiling operations
223 void set_method_data_pointer_for_bcp();
224 void test_method_data_pointer(Register mdp, Label& zero_continue);
225 void verify_method_data_pointer();
226
227 void set_mdp_data_at(Register mdp_in, int constant, Register value);
228 void increment_mdp_data_at(Address data, bool decrement = false);
229 void increment_mdp_data_at(Register mdp_in, int constant,
230 bool decrement = false);
231 void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
232 bool decrement = false);
233 void increment_mask_and_jump(Address counter_addr,
234 int increment, int mask,
235 Register scratch, Register scratch2,
236 bool preloaded,
237 Condition cond, Label* where);
238 void set_mdp_flag_at(Register mdp_in, int flag_constant);
239 void test_mdp_data_at(Register mdp_in, int offset, Register value,
240 Register test_value_out,
241 Label& not_equal_continue);
242
243 void record_klass_in_profile(Register receiver, Register mdp,
244 Register reg2, bool is_virtual_call);
245 void record_klass_in_profile_helper(Register receiver, Register mdp,
246 Register reg2, int start_row,
247 Label& done, bool is_virtual_call);
248
249 void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
250 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
251 void update_mdp_by_constant(Register mdp_in, int constant);
252 void update_mdp_for_ret(Register return_bci);
253
254 // narrow int return value
255 void narrow(Register result);
256
257 void profile_taken_branch(Register mdp, Register bumped_count);
258 void profile_not_taken_branch(Register mdp);
259 void profile_call(Register mdp);
260 void profile_final_call(Register mdp);
261 void profile_virtual_call(Register receiver, Register mdp,
262 Register scratch2,
263 bool receiver_can_be_null = false);
264 void profile_ret(Register return_bci, Register mdp);
265 void profile_null_seen(Register mdp);
266 void profile_typecheck(Register mdp, Register klass, Register scratch);
267 void profile_typecheck_failed(Register mdp);
268 void profile_switch_default(Register mdp);
269 void profile_switch_case(Register index_in_scratch, Register mdp,
270 Register scratch2);
271
272 void profile_obj_type(Register obj, const Address& mdo_addr);
273 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual);
274 void profile_return_type(Register mdp, Register ret, Register tmp);
275 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2);
276
277 // Debugging
278 // only if +VerifyOops && state == atos
279 void verify_oop(Register reg, TosState state = atos);
280 // only if +VerifyFPU && (state == ftos || state == dtos)
281 void verify_FPU(int stack_depth, TosState state = ftos);
282
283 #endif // !CC_INTERP
284
285 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
286
287 // support for jvmti/dtrace
288 void notify_method_entry();
289 void notify_method_exit(TosState state, NotifyMethodExitMode mode);
290
291 virtual void _call_Unimplemented(address call_site) {
292 save_bcp();
293 set_last_Java_frame(esp, rfp, (address) pc(), rscratch1);
294 MacroAssembler::_call_Unimplemented(call_site);
295 }
296 };
297
298 #endif // CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP