1 /* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, 2015, 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 typedef ByteSize (*OffsetFunction)(uint); 37 38 class InterpreterMacroAssembler: public MacroAssembler { 39 protected: 40 41 protected: 42 using MacroAssembler::call_VM_leaf_base; 43 44 // Interpreter specific version of call_VM_base 45 using MacroAssembler::call_VM_leaf_base; 46 47 virtual void call_VM_leaf_base(address entry_point, 48 int number_of_arguments); 49 50 virtual void call_VM_base(Register oop_result, 51 Register java_thread, 52 Register last_java_sp, 53 address entry_point, 54 int number_of_arguments, 55 bool check_exceptions); 56 57 virtual void check_and_handle_popframe(Register java_thread); 58 virtual void check_and_handle_earlyret(Register java_thread); 59 60 // base routine for all dispatches 61 void dispatch_base(TosState state, address* table, bool verifyoop = true); 62 63 public: 64 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 65 66 void load_earlyret_value(TosState state); 67 68 void jump_to_entry(address entry); 69 70 // Interpreter-specific registers 71 void save_bcp() { 72 str(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize)); 73 } 74 75 void restore_bcp() { 76 ldr(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize)); 77 } 78 79 void restore_locals() { 80 ldr(rlocals, Address(rfp, frame::interpreter_frame_locals_offset * wordSize)); 81 } 82 83 void restore_constant_pool_cache() { 84 ldr(rcpool, Address(rfp, frame::interpreter_frame_cache_offset * wordSize)); 85 } 86 87 void get_dispatch(); 88 89 // Helpers for runtime call arguments/results 90 91 // Helpers for runtime call arguments/results 92 void get_method(Register reg) { 93 ldr(reg, Address(rfp, frame::interpreter_frame_method_offset * wordSize)); 94 } 95 96 void get_const(Register reg) { 97 get_method(reg); 98 ldr(reg, Address(reg, in_bytes(Method::const_offset()))); 99 } 100 101 void get_constant_pool(Register reg) { 102 get_const(reg); 103 ldr(reg, Address(reg, in_bytes(ConstMethod::constants_offset()))); 104 } 105 106 void get_constant_pool_cache(Register reg) { 107 get_constant_pool(reg); 108 ldr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); 109 } 110 111 void get_cpool_and_tags(Register cpool, Register tags) { 112 get_constant_pool(cpool); 113 ldr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 114 } 115 116 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 117 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 118 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)); 119 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 120 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 121 void get_method_counters(Register method, Register mcs, Label& skip); 122 123 // load cpool->resolved_references(index); 124 void load_resolved_reference_at_index(Register result, Register index); 125 126 void pop_ptr(Register r = r0); 127 void pop_i(Register r = r0); 128 void pop_l(Register r = r0); 129 void pop_f(FloatRegister r = v0); 130 void pop_d(FloatRegister r = v0); 131 void push_ptr(Register r = r0); 132 void push_i(Register r = r0); 133 void push_l(Register r = r0); 134 void push_f(FloatRegister r = v0); 135 void push_d(FloatRegister r = v0); 136 137 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 138 139 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 140 141 void pop(TosState state); // transition vtos -> state 142 void push(TosState state); // transition state -> vtos 143 144 void pop(RegSet regs, Register stack) { ((MacroAssembler*)this)->pop(regs, stack); } 145 void push(RegSet regs, Register stack) { ((MacroAssembler*)this)->push(regs, stack); } 146 147 void empty_expression_stack() { 148 ldr(esp, Address(rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 149 // NULL last_sp until next java call 150 str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); 151 } 152 153 // Helpers for swap and dup 154 void load_ptr(int n, Register val); 155 void store_ptr(int n, Register val); 156 157 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 158 // a subtype of super_klass. 159 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 160 161 // Dispatching 162 void dispatch_prolog(TosState state, int step = 0); 163 void dispatch_epilog(TosState state, int step = 0); 164 // dispatch via rscratch1 165 void dispatch_only(TosState state); 166 // dispatch normal table via rscratch1 (assume rscratch1 is loaded already) 167 void dispatch_only_normal(TosState state); 168 void dispatch_only_noverify(TosState state); 169 // load rscratch1 from [rbcp + step] and dispatch via rscratch1 170 void dispatch_next(TosState state, int step = 0); 171 // load rscratch1 from [esi] and dispatch via rscratch1 and table 172 void dispatch_via (TosState state, address* table); 173 174 // jump to an invoked target 175 void prepare_to_jump_from_interpreted(); 176 void jump_from_interpreted(Register method, Register temp); 177 178 179 // Returning from interpreted functions 180 // 181 // Removes the current activation (incl. unlocking of monitors) 182 // and sets up the return address. This code is also used for 183 // exception unwindwing. In that case, we do not want to throw 184 // IllegalMonitorStateExceptions, since that might get us into an 185 // infinite rethrow exception loop. 186 // Additionally this code is used for popFrame and earlyReturn. 187 // In popFrame case we want to skip throwing an exception, 188 // installing an exception, and notifying jvmdi. 189 // In earlyReturn case we only want to skip throwing an exception 190 // and installing an exception. 191 void remove_activation(TosState state, 192 bool throw_monitor_exception = true, 193 bool install_monitor_exception = true, 194 bool notify_jvmdi = true); 195 196 // FIXME: Give us a valid frame at a null check. 197 virtual void null_check(Register reg, int offset = -1) { 198 // #ifdef ASSERT 199 // save_bcp(); 200 // set_last_Java_frame(esp, rfp, (address) pc()); 201 // #endif 202 MacroAssembler::null_check(reg, offset); 203 // #ifdef ASSERT 204 // reset_last_Java_frame(true); 205 // #endif 206 } 207 208 // Object locking 209 void lock_object (Register lock_reg); 210 void unlock_object(Register lock_reg); 211 212 // Interpreter profiling operations 213 void set_method_data_pointer_for_bcp(); 214 void test_method_data_pointer(Register mdp, Label& zero_continue); 215 void verify_method_data_pointer(); 216 217 void set_mdp_data_at(Register mdp_in, int constant, Register value); 218 void increment_mdp_data_at(Address data, bool decrement = false); 219 void increment_mdp_data_at(Register mdp_in, int constant, 220 bool decrement = false); 221 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 222 bool decrement = false); 223 void increment_mask_and_jump(Address counter_addr, 224 int increment, Address mask, 225 Register scratch, Register scratch2, 226 bool preloaded, Condition cond, 227 Label* where); 228 void set_mdp_flag_at(Register mdp_in, int flag_constant); 229 void test_mdp_data_at(Register mdp_in, int offset, Register value, 230 Register test_value_out, 231 Label& not_equal_continue); 232 233 void record_klass_in_profile(Register receiver, Register mdp, 234 Register reg2, bool is_virtual_call); 235 void record_klass_in_profile_helper(Register receiver, Register mdp, 236 Register reg2, int start_row, 237 Label& done, bool is_virtual_call); 238 void record_item_in_profile_helper(Register item, Register mdp, 239 Register reg2, int start_row, Label& done, int total_rows, 240 OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, 241 int non_profiled_offset); 242 243 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 244 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 245 void update_mdp_by_constant(Register mdp_in, int constant); 246 void update_mdp_for_ret(Register return_bci); 247 248 // narrow int return value 249 void narrow(Register result); 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_called_method(Register method, Register mdp, Register reg2) NOT_JVMCI_RETURN; 259 void profile_ret(Register return_bci, Register mdp); 260 void profile_null_seen(Register mdp); 261 void profile_typecheck(Register mdp, Register klass, Register scratch); 262 void profile_typecheck_failed(Register mdp); 263 void profile_switch_default(Register mdp); 264 void profile_switch_case(Register index_in_scratch, Register mdp, 265 Register scratch2); 266 267 void profile_obj_type(Register obj, const Address& mdo_addr); 268 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 269 void profile_return_type(Register mdp, Register ret, Register tmp); 270 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2); 271 272 // Debugging 273 // only if +VerifyOops && state == atos 274 void verify_oop(Register reg, TosState state = atos); 275 // only if +VerifyFPU && (state == ftos || state == dtos) 276 void verify_FPU(int stack_depth, TosState state = ftos); 277 278 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 279 280 // support for jvmti/dtrace 281 void notify_method_entry(); 282 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 283 284 virtual void _call_Unimplemented(address call_site) { 285 save_bcp(); 286 set_last_Java_frame(esp, rfp, (address) pc(), rscratch1); 287 MacroAssembler::_call_Unimplemented(call_site); 288 } 289 }; 290 291 #endif // CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP