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: InterpreterMacroAssembler(CodeBuffer * code)64 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 65 66 void load_earlyret_value(TosState state); 67 68 #ifdef CC_INTERP save_bcp()69 void save_bcp() { /* not needed in c++ interpreter and harmless */ } restore_bcp()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 save_bcp()78 void save_bcp() { 79 str(rbcp, Address(rfp, frame::interpreter_frame_bcx_offset * wordSize)); 80 } 81 restore_bcp()82 void restore_bcp() { 83 ldr(rbcp, Address(rfp, frame::interpreter_frame_bcx_offset * wordSize)); 84 } 85 restore_locals()86 void restore_locals() { 87 ldr(rlocals, Address(rfp, frame::interpreter_frame_locals_offset * wordSize)); 88 } 89 restore_constant_pool_cache()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 get_method(Register reg)99 void get_method(Register reg) { 100 ldr(reg, Address(rfp, frame::interpreter_frame_method_offset * wordSize)); 101 } 102 get_const(Register reg)103 void get_const(Register reg) { 104 get_method(reg); 105 ldr(reg, Address(reg, in_bytes(Method::const_offset()))); 106 } 107 get_constant_pool(Register reg)108 void get_constant_pool(Register reg) { 109 get_const(reg); 110 ldr(reg, Address(reg, in_bytes(ConstMethod::constants_offset()))); 111 } 112 get_constant_pool_cache(Register reg)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 get_cpool_and_tags(Register cpool,Register tags)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 pop(Register r)144 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 145 push(Register r)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 pop(RegSet regs,Register stack)151 void pop(RegSet regs, Register stack) { ((MacroAssembler*)this)->pop(regs, stack); } push(RegSet regs,Register stack)152 void push(RegSet regs, Register stack) { ((MacroAssembler*)this)->push(regs, stack); } 153 empty_expression_stack()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. null_check(Register reg,int offset=-1)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 _call_Unimplemented(address call_site)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 299