1 /* 2 * Copyright (c) 2003, 2011, 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 37 class InterpreterMacroAssembler: public MacroAssembler { 38 protected: 39 40 protected: 41 using MacroAssembler::call_VM_leaf_base; 42 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 62 public: 63 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 64 65 void load_earlyret_value(TosState state); 66 67 void jump_to_entry(address entry); 68 69 // Interpreter-specific registers 70 void save_bcp() { 71 str(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize)); 72 } 73 74 void restore_bcp() { 75 ldr(rbcp, Address(rfp, frame::interpreter_frame_bcp_offset * wordSize)); 76 } 77 78 void restore_locals() { 79 ldr(rlocals, Address(rfp, frame::interpreter_frame_locals_offset * wordSize)); 80 } 81 82 void restore_constant_pool_cache() { 83 ldr(rcpool, Address(rfp, frame::interpreter_frame_cache_offset * wordSize)); 84 } 85 86 void get_dispatch(); 87 88 // Helpers for runtime call arguments/results 89 90 // Helpers for runtime call arguments/results 91 void get_method(Register reg) { 92 ldr(reg, Address(rfp, frame::interpreter_frame_method_offset * wordSize)); 93 } 94 95 void get_const(Register reg) { 96 get_method(reg); 97 ldr(reg, Address(reg, in_bytes(Method::const_offset()))); 98 } 99 100 void get_constant_pool(Register reg) { 101 get_const(reg); 102 ldr(reg, Address(reg, in_bytes(ConstMethod::constants_offset()))); 103 } 104 105 void get_constant_pool_cache(Register reg) { 106 get_constant_pool(reg); 107 ldr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); 108 } 109 110 void get_cpool_and_tags(Register cpool, Register tags) { 111 get_constant_pool(cpool); 112 ldr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 113 } 114 115 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 116 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 117 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)); 118 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 119 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 120 void get_method_counters(Register method, Register mcs, Label& skip); 121 122 // load cpool->resolved_references(index); 123 void load_resolved_reference_at_index(Register result, Register index); 124 125 void pop_ptr(Register r = r0); 126 void pop_i(Register r = r0); 127 void pop_l(Register r = r0); 128 void pop_f(FloatRegister r = v0); 129 void pop_d(FloatRegister r = v0); 130 void push_ptr(Register r = r0); 131 void push_i(Register r = r0); 132 void push_l(Register r = r0); 133 void push_f(FloatRegister r = v0); 134 void push_d(FloatRegister r = v0); 135 136 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 137 138 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 139 140 void pop(TosState state); // transition vtos -> state 141 void push(TosState state); // transition state -> vtos 142 143 void pop(RegSet regs, Register stack) { ((MacroAssembler*)this)->pop(regs, stack); } 144 void push(RegSet regs, Register stack) { ((MacroAssembler*)this)->push(regs, stack); } 145 146 void empty_expression_stack() { 147 ldr(esp, Address(rfp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 148 // NULL last_sp until next java call 149 str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); 150 } 151 152 // Helpers for swap and dup 153 void load_ptr(int n, Register val); 154 void store_ptr(int n, Register val); 155 156 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 157 // a subtype of super_klass. 158 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 159 160 // Dispatching 161 void dispatch_prolog(TosState state, int step = 0); 162 void dispatch_epilog(TosState state, int step = 0); 163 // dispatch via rscratch1 164 void dispatch_only(TosState state); 165 // dispatch normal table via rscratch1 (assume rscratch1 is loaded already) 166 void dispatch_only_normal(TosState state); 167 void dispatch_only_noverify(TosState state); 168 // load rscratch1 from [rbcp + step] and dispatch via rscratch1 169 void dispatch_next(TosState state, int step = 0); 170 // load rscratch1 from [esi] and dispatch via rscratch1 and table 171 void dispatch_via (TosState state, address* table); 172 173 // jump to an invoked target 174 void prepare_to_jump_from_interpreted(); 175 void jump_from_interpreted(Register method, Register temp); 176 177 178 // Returning from interpreted functions 179 // 180 // Removes the current activation (incl. unlocking of monitors) 181 // and sets up the return address. This code is also used for 182 // exception unwindwing. In that case, we do not want to throw 183 // IllegalMonitorStateExceptions, since that might get us into an 184 // infinite rethrow exception loop. 185 // Additionally this code is used for popFrame and earlyReturn. 186 // In popFrame case we want to skip throwing an exception, 187 // installing an exception, and notifying jvmdi. 188 // In earlyReturn case we only want to skip throwing an exception 189 // and installing an exception. 190 void remove_activation(TosState state, 191 bool throw_monitor_exception = true, 192 bool install_monitor_exception = true, 193 bool notify_jvmdi = true); 194 195 // FIXME: Give us a valid frame at a null check. 196 virtual void null_check(Register reg, int offset = -1) { 197 // #ifdef ASSERT 198 // save_bcp(); 199 // set_last_Java_frame(esp, rfp, (address) pc()); 200 // #endif 201 MacroAssembler::null_check(reg, offset); 202 // #ifdef ASSERT 203 // reset_last_Java_frame(true, false); 204 // #endif 205 } 206 207 // Object locking 208 void lock_object (Register lock_reg); 209 void unlock_object(Register lock_reg); 210 211 // Interpreter profiling operations 212 void set_method_data_pointer_for_bcp(); 213 void test_method_data_pointer(Register mdp, Label& zero_continue); 214 void verify_method_data_pointer(); 215 216 void set_mdp_data_at(Register mdp_in, int constant, Register value); 217 void increment_mdp_data_at(Address data, bool decrement = false); 218 void increment_mdp_data_at(Register mdp_in, int constant, 219 bool decrement = false); 220 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 221 bool decrement = false); 222 void increment_mask_and_jump(Address counter_addr, 223 int increment, Address mask, 224 Register scratch, Register scratch2, 225 bool preloaded, Condition cond, 226 Label* where); 227 void set_mdp_flag_at(Register mdp_in, int flag_constant); 228 void test_mdp_data_at(Register mdp_in, int offset, Register value, 229 Register test_value_out, 230 Label& not_equal_continue); 231 232 void record_klass_in_profile(Register receiver, Register mdp, 233 Register reg2, bool is_virtual_call); 234 void record_klass_in_profile_helper(Register receiver, Register mdp, 235 Register reg2, int start_row, 236 Label& done, bool is_virtual_call); 237 238 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 239 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 240 void update_mdp_by_constant(Register mdp_in, int constant); 241 void update_mdp_for_ret(Register return_bci); 242 243 void profile_taken_branch(Register mdp, Register bumped_count); 244 void profile_not_taken_branch(Register mdp); 245 void profile_call(Register mdp); 246 void profile_final_call(Register mdp); 247 void profile_virtual_call(Register receiver, Register mdp, 248 Register scratch2, 249 bool receiver_can_be_null = false); 250 void profile_ret(Register return_bci, Register mdp); 251 void profile_null_seen(Register mdp); 252 void profile_typecheck(Register mdp, Register klass, Register scratch); 253 void profile_typecheck_failed(Register mdp); 254 void profile_switch_default(Register mdp); 255 void profile_switch_case(Register index_in_scratch, Register mdp, 256 Register scratch2); 257 258 void profile_obj_type(Register obj, const Address& mdo_addr); 259 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 260 void profile_return_type(Register mdp, Register ret, Register tmp); 261 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2); 262 263 // Debugging 264 // only if +VerifyOops && state == atos 265 void verify_oop(Register reg, TosState state = atos); 266 // only if +VerifyFPU && (state == ftos || state == dtos) 267 void verify_FPU(int stack_depth, TosState state = ftos); 268 269 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 270 271 // support for jvmti/dtrace 272 void notify_method_entry(); 273 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 274 275 virtual void _call_Unimplemented(address call_site) { 276 save_bcp(); 277 set_last_Java_frame(esp, rfp, (address) pc(), rscratch1); 278 MacroAssembler::_call_Unimplemented(call_site); 279 } 280 }; 281 282 #endif // CPU_AARCH64_VM_INTERP_MASM_AARCH64_64_HPP