1 /*
2 * Copyright (c) 2002, 2023, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012, 2023 SAP SE. 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_PPC_INTERP_MASM_PPC_HPP
27 #define CPU_PPC_INTERP_MASM_PPC_HPP
28
29 #include "asm/macroAssembler.hpp"
30 #include "interpreter/invocationCounter.hpp"
31
32 // This file specializes the assembler with interpreter-specific macros.
33
34
35 class InterpreterMacroAssembler: public MacroAssembler {
36
37 public:
38 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
39
40 void null_check_throw(Register a, int offset, Register temp_reg);
41 void load_klass_check_null_throw(Register dst, Register src, Register temp_reg);
42
43 void jump_to_entry(address entry, Register Rscratch);
44
45 // Handy address generation macros.
46 #define thread_(field_name) in_bytes(JavaThread::field_name ## _offset()), R16_thread
47 #define method_(field_name) in_bytes(Method::field_name ## _offset()), R19_method
48
49 virtual void check_and_handle_popframe(Register scratch_reg);
50 virtual void check_and_handle_earlyret(Register scratch_reg);
51
52 void call_VM_preemptable(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true);
53 void restore_after_resume(Register fp);
54 // R22 and R31 are preserved when a vthread gets preempted in the interpreter.
55 // The interpreter already assumes that these registers are nonvolatile across native calls.
56 bool nonvolatile_accross_vthread_preemtion(Register r) const {
57 return r->is_nonvolatile() && ((r == R22) || (r == R31));
58 }
59
60 // Base routine for all dispatches.
61 void dispatch_base(TosState state, address* table);
62
63 void load_earlyret_value(TosState state, Register Rscratch1);
64
65 static const Address l_tmp;
66 static const Address d_tmp;
67
68 // dispatch routines
69 void dispatch_next(TosState state, int step = 0, bool generate_poll = false);
70 void dispatch_via (TosState state, address* table);
71 void load_dispatch_table(Register dst, address* table);
72 void dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool generate_poll = false);
73
74 // Called by shared interpreter generator.
75 void dispatch_prolog(TosState state, int step = 0);
76 void dispatch_epilog(TosState state, int step = 0);
77
78 // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls.
79 void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1);
80 void super_call_VM(Register thread_cache, Register oop_result, Register last_java_sp,
81 address entry_point, Register arg_1, Register arg_2, bool check_exception = true);
82
83 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
84 // a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3.
85 void gen_subtype_check(Register sub_klass, Register super_klass,
86 Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype);
87
88 // Load object from cpool->resolved_references(index).
89 void load_resolved_reference_at_index(Register result, Register index, Register tmp1, Register tmp2,
90 Label *L_handle_null = nullptr);
91
92 // load cpool->resolved_klass_at(index)
93 void load_resolved_klass_at_offset(Register Rcpool, Register Roffset, Register Rklass);
94
95 void load_receiver(Register Rparam_count, Register Rrecv_dst);
96
97 // helpers for expression stack
98 void pop_i( Register r = R17_tos);
99 void pop_ptr( Register r = R17_tos);
100 void pop_l( Register r = R17_tos);
101 void pop_f(FloatRegister f = F15_ftos);
102 void pop_d(FloatRegister f = F15_ftos );
103
104 void push_i( Register r = R17_tos);
105 void push_ptr( Register r = R17_tos);
106 void push_l( Register r = R17_tos);
107 void push_f(FloatRegister f = F15_ftos );
108 void push_d(FloatRegister f = F15_ftos);
109
110 void push_2ptrs(Register first, Register second);
111
112 void move_l_to_d(Register l = R17_tos, FloatRegister d = F15_ftos);
113 void move_d_to_l(FloatRegister d = F15_ftos, Register l = R17_tos);
114
115 void pop (TosState state); // transition vtos -> state
116 void push(TosState state); // transition state -> vtos
117 void empty_expression_stack(); // Resets both Lesp and SP.
118
119 public:
120 // Load values from bytecode stream:
121
122 enum signedOrNot { Signed, Unsigned };
123 enum setCCOrNot { set_CC, dont_set_CC };
124
125 void get_2_byte_integer_at_bcp(int bcp_offset,
126 Register Rdst,
127 signedOrNot is_signed);
128
129 void get_4_byte_integer_at_bcp(int bcp_offset,
130 Register Rdst,
131 signedOrNot is_signed = Unsigned);
132
133 void get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size);
134
135 void load_resolved_indy_entry(Register cache, Register index);
136 void load_field_entry(Register cache, Register index, int bcp_offset = 1);
137 void load_method_entry(Register cache, Register index, int bcp_offset = 1);
138
139 void get_u4(Register Rdst, Register Rsrc, int offset, signedOrNot is_signed);
140
141 // common code
142
143 void field_offset_at(int n, Register tmp, Register dest, Register base);
144 int field_offset_at(Register object, address bcp, int offset);
145 void fast_iaaccess(int n, address bcp);
146 void fast_iaputfield(address bcp, bool do_store_check);
147
148 void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
149 void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
150
151 void get_const(Register Rdst);
152 void get_constant_pool(Register Rdst);
153 void get_constant_pool_cache(Register Rdst);
154 void get_cpool_and_tags(Register Rcpool, Register Rtags);
155 void is_a(Label& L);
156
157 void narrow(Register result);
158
159 // Java Call Helpers
160 void call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2);
161
162 // --------------------------------------------------
163
164 void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true,
165 bool install_monitor_exception = true);
166
167 // Removes the current activation (incl. unlocking of monitors).
168 // Additionally this code is used for earlyReturn in which case we
169 // want to skip throwing an exception and installing an exception.
170 void remove_activation(TosState state,
171 bool throw_monitor_exception = true,
172 bool install_monitor_exception = true);
173 void merge_frames(Register Rtop_frame_sp, Register return_pc, Register Rscratch1, Register Rscratch2); // merge top frames
174
175 void add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2);
176
177 // Local variable access helpers
178 void load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex);
179 void load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex);
180 void load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex);
181 void load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex);
182 void load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex);
183 void store_local_int(Register Rvalue, Register Rindex);
184 void store_local_long(Register Rvalue, Register Rindex);
185 void store_local_ptr(Register Rvalue, Register Rindex);
186 void store_local_float(FloatRegister Rvalue, Register Rindex);
187 void store_local_double(FloatRegister Rvalue, Register Rindex);
188
189 // Call VM for std frames
190 // Special call VM versions that check for exceptions and forward exception
191 // via short cut (not via expensive forward exception stub).
192 void check_and_forward_exception(Register Rscratch1, Register Rscratch2);
193 void call_VM(Register oop_result, address entry_point, bool check_exceptions = true, Label* last_java_pc = nullptr);
194 void call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true);
195 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
196 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true);
197 // Should not be used:
198 void call_VM(Register oop_result, Register last_java_sp, address entry_point, bool check_exceptions = true) {ShouldNotReachHere();}
199 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true) {ShouldNotReachHere();}
200 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true) {ShouldNotReachHere();}
201 void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true) {ShouldNotReachHere();}
202
203 Address first_local_in_stack();
204
205 enum LoadOrStore { load, store };
206 void static_iload_or_store(int which_local, LoadOrStore direction, Register Rtmp);
207 void static_aload_or_store(int which_local, LoadOrStore direction, Register Rtmp);
208 void static_dload_or_store(int which_local, LoadOrStore direction);
209
210 void save_interpreter_state(Register scratch);
211 void restore_interpreter_state(Register scratch, bool bcp_and_mdx_only = false, bool restore_top_frame_sp = false);
212
213 void increment_backedge_counter(const Register Rcounters, Register Rtmp, Register Rtmp2, Register Rscratch);
214
215 void record_static_call_in_profile(Register Rentry, Register Rtmp);
216 void record_receiver_call_in_profile(Register Rklass, Register Rentry, Register Rtmp);
217
218 void get_method_counters(Register method, Register Rcounters, Label& skip);
219 void increment_invocation_counter(Register iv_be_count, Register Rtmp1, Register Rtmp2_r0);
220
221 // Object locking
222 void lock_object (Register lock_reg, Register obj_reg);
223 void unlock_object(Register lock_reg);
224
225 // Interpreter profiling operations
226 void set_method_data_pointer_for_bcp();
227 void test_method_data_pointer(Label& zero_continue);
228 void verify_method_data_pointer();
229
230 void set_mdp_data_at(int constant, Register value);
231
232 void increment_mdp_data_at(int constant, Register counter_addr, Register Rbumped_count, bool decrement = false);
233
234 void increment_mdp_data_at(Register counter_addr, Register Rbumped_count, bool decrement = false);
235 void increment_mdp_data_at(Register reg, int constant, Register scratch, Register Rbumped_count, bool decrement = false);
236
237 void set_mdp_flag_at(int flag_constant, Register scratch);
238 void test_mdp_data_at(int offset, Register value, Label& not_equal_continue, Register test_out);
239
240 void update_mdp_by_offset(int offset_of_disp, Register scratch);
241 void update_mdp_by_offset(Register reg, int offset_of_disp,
242 Register scratch);
243 void update_mdp_by_constant(int constant);
244 void update_mdp_for_ret(TosState state, Register return_bci);
245
246 void profile_taken_branch(Register scratch, Register bumped_count);
247 void profile_not_taken_branch(Register scratch1, Register scratch2);
248 void profile_call(Register scratch1, Register scratch2);
249 void profile_final_call(Register scratch1, Register scratch2);
250 void profile_virtual_call(Register Rreceiver, Register Rscratch1, Register Rscratch2, bool receiver_can_be_null);
251 void profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2);
252 void profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2);
253 void profile_switch_default(Register scratch1, Register scratch2);
254 void profile_switch_case(Register index, Register scratch1,Register scratch2, Register scratch3);
255 void profile_null_seen(Register Rscratch1, Register Rscratch2);
256 void record_klass_in_profile(Register receiver, Register scratch1, Register scratch2);
257 void record_klass_in_profile_helper(Register receiver, Register scratch1, Register scratch2, int start_row, Label& done);
258
259 // Argument and return type profiling.
260 void profile_obj_type(Register obj, Register mdo_addr_base, RegisterOrConstant mdo_addr_offs, Register tmp, Register tmp2);
261 void profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual);
262 void profile_return_type(Register ret, Register tmp1, Register tmp2);
263 void profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4);
264
265 // Debugging
266 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
267 void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
268 void verify_FPU(int stack_depth, TosState state = ftos);
269
270 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
271
272 // Support for jvmdi/jvmpi.
273 void notify_method_entry();
274 void notify_method_exit(bool is_native_method, TosState state,
275 NotifyMethodExitMode mode, bool check_exceptions);
276 };
277
278 #endif // CPU_PPC_INTERP_MASM_PPC_HPP