1 /* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_X86_VM_INTERP_MASM_X86_HPP 26 #define CPU_X86_VM_INTERP_MASM_X86_HPP 27 28 #include "asm/macroAssembler.hpp" 29 #include "asm/macroAssembler.inline.hpp" 30 #include "interpreter/invocationCounter.hpp" 31 #include "runtime/frame.hpp" 32 33 // This file specializes the assember with interpreter-specific macros 34 35 typedef ByteSize (*OffsetFunction)(uint); 36 37 class InterpreterMacroAssembler: public MacroAssembler { 38 39 #ifndef CC_INTERP 40 protected: 41 // Interpreter specific version of call_VM_base 42 virtual void call_VM_leaf_base(address entry_point, 43 int number_of_arguments); 44 45 virtual void call_VM_base(Register oop_result, 46 Register java_thread, 47 Register last_java_sp, 48 address entry_point, 49 int number_of_arguments, 50 bool check_exceptions); 51 52 virtual void check_and_handle_popframe(Register java_thread); 53 virtual void check_and_handle_earlyret(Register java_thread); 54 55 // base routine for all dispatches 56 void dispatch_base(TosState state, address* table, bool verifyoop = true); 57 #endif // CC_INTERP 58 59 public: 60 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code), 61 _locals_register(LP64_ONLY(r14) NOT_LP64(rdi)), 62 _bcp_register(LP64_ONLY(r13) NOT_LP64(rsi)) {} 63 64 void load_earlyret_value(TosState state); 65 66 #ifdef CC_INTERP 67 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 68 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 69 70 // Helpers for runtime call arguments/results 71 void get_method(Register reg); 72 73 #else 74 75 // Interpreter-specific registers 76 void save_bcp() { 77 movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), _bcp_register); 78 } 79 80 void restore_bcp() { 81 movptr(_bcp_register, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize)); 82 } 83 84 void restore_locals() { 85 movptr(_locals_register, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); 86 } 87 88 // Helpers for runtime call arguments/results 89 void get_method(Register reg) { 90 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); 91 } 92 93 void get_const(Register reg) { 94 get_method(reg); 95 movptr(reg, Address(reg, Method::const_offset())); 96 } 97 98 void get_constant_pool(Register reg) { 99 get_const(reg); 100 movptr(reg, Address(reg, ConstMethod::constants_offset())); 101 } 102 103 void get_constant_pool_cache(Register reg) { 104 get_constant_pool(reg); 105 movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); 106 } 107 108 void get_cpool_and_tags(Register cpool, Register tags) { 109 get_constant_pool(cpool); 110 movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 111 } 112 113 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 114 void get_cache_and_index_at_bcp(Register cache, 115 Register index, 116 int bcp_offset, 117 size_t index_size = sizeof(u2)); 118 void get_cache_and_index_and_bytecode_at_bcp(Register cache, 119 Register index, 120 Register bytecode, 121 int byte_no, 122 int bcp_offset, 123 size_t index_size = sizeof(u2)); 124 void get_cache_entry_pointer_at_bcp(Register cache, 125 Register tmp, 126 int bcp_offset, 127 size_t index_size = sizeof(u2)); 128 void get_cache_index_at_bcp(Register index, 129 int bcp_offset, 130 size_t index_size = sizeof(u2)); 131 132 // load cpool->resolved_references(index); 133 void load_resolved_reference_at_index(Register result, Register index); 134 135 NOT_LP64(void f2ieee();) // truncate ftos to 32bits 136 NOT_LP64(void d2ieee();) // truncate dtos to 64bits 137 138 // Expression stack 139 void pop_ptr(Register r = rax); 140 void pop_i(Register r = rax); 141 void push_ptr(Register r = rax); 142 void push_i(Register r = rax); 143 144 void push_f(XMMRegister r); 145 void pop_f(XMMRegister r); 146 void pop_d(XMMRegister r); 147 void push_d(XMMRegister r); 148 #ifdef _LP64 149 void pop_l(Register r = rax); 150 void push_l(Register r = rax); 151 #else 152 void pop_l(Register lo = rax, Register hi = rdx); 153 void pop_f(); 154 void pop_d(); 155 156 void push_l(Register lo = rax, Register hi = rdx); 157 void push_d(); 158 void push_f(); 159 #endif // _LP64 160 161 void pop(Register r) { ((MacroAssembler*)this)->pop(r); } 162 void push(Register r) { ((MacroAssembler*)this)->push(r); } 163 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 164 165 void pop(TosState state); // transition vtos -> state 166 void push(TosState state); // transition state -> vtos 167 168 // These are dummies to prevent surprise implicit conversions to Register 169 void pop(void* v); // Add unimplemented ambiguous method 170 void push(void* v); // Add unimplemented ambiguous method 171 172 void empty_expression_stack() { 173 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 174 // NULL last_sp until next java call 175 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 176 } 177 178 // Helpers for swap and dup 179 void load_ptr(int n, Register val); 180 void store_ptr(int n, Register val); 181 182 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 183 // a subtype of super_klass. 184 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 185 186 // Dispatching 187 void dispatch_prolog(TosState state, int step = 0); 188 void dispatch_epilog(TosState state, int step = 0); 189 // dispatch via rbx (assume rbx is loaded already) 190 void dispatch_only(TosState state); 191 // dispatch normal table via rbx (assume rbx is loaded already) 192 void dispatch_only_normal(TosState state); 193 void dispatch_only_noverify(TosState state); 194 // load rbx from [_bcp_register + step] and dispatch via rbx 195 void dispatch_next(TosState state, int step = 0); 196 // load rbx from [_bcp_register] and dispatch via rbx and table 197 void dispatch_via (TosState state, address* table); 198 199 // jump to an invoked target 200 void prepare_to_jump_from_interpreted(); 201 void jump_from_interpreted(Register method, Register temp); 202 203 // Returning from interpreted functions 204 // 205 // Removes the current activation (incl. unlocking of monitors) 206 // and sets up the return address. This code is also used for 207 // exception unwindwing. In that case, we do not want to throw 208 // IllegalMonitorStateExceptions, since that might get us into an 209 // infinite rethrow exception loop. 210 // Additionally this code is used for popFrame and earlyReturn. 211 // In popFrame case we want to skip throwing an exception, 212 // installing an exception, and notifying jvmdi. 213 // In earlyReturn case we only want to skip throwing an exception 214 // and installing an exception. 215 void remove_activation(TosState state, Register ret_addr, 216 bool throw_monitor_exception = true, 217 bool install_monitor_exception = true, 218 bool notify_jvmdi = true); 219 #endif // CC_INTERP 220 void get_method_counters(Register method, Register mcs, Label& skip); 221 222 // Object locking 223 void lock_object (Register lock_reg); 224 void unlock_object(Register lock_reg); 225 226 #ifndef CC_INTERP 227 228 // Interpreter profiling operations 229 void set_method_data_pointer_for_bcp(); 230 void test_method_data_pointer(Register mdp, Label& zero_continue); 231 void verify_method_data_pointer(); 232 233 void set_mdp_data_at(Register mdp_in, int constant, Register value); 234 void increment_mdp_data_at(Address data, bool decrement = false); 235 void increment_mdp_data_at(Register mdp_in, int constant, 236 bool decrement = false); 237 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 238 bool decrement = false); 239 void increment_mask_and_jump(Address counter_addr, 240 int increment, Address mask, 241 Register scratch, bool preloaded, 242 Condition cond, Label* where); 243 void set_mdp_flag_at(Register mdp_in, int flag_constant); 244 void test_mdp_data_at(Register mdp_in, int offset, Register value, 245 Register test_value_out, 246 Label& not_equal_continue); 247 248 void record_klass_in_profile(Register receiver, Register mdp, 249 Register reg2, bool is_virtual_call); 250 void record_klass_in_profile_helper(Register receiver, Register mdp, 251 Register reg2, int start_row, 252 Label& done, bool is_virtual_call); 253 void record_item_in_profile_helper(Register item, Register mdp, 254 Register reg2, int start_row, Label& done, int total_rows, 255 OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, 256 int non_profiled_offset); 257 258 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 259 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 260 void update_mdp_by_constant(Register mdp_in, int constant); 261 void update_mdp_for_ret(Register return_bci); 262 263 void profile_taken_branch(Register mdp, Register bumped_count); 264 void profile_not_taken_branch(Register mdp); 265 void profile_call(Register mdp); 266 void profile_final_call(Register mdp); 267 void profile_virtual_call(Register receiver, Register mdp, 268 Register scratch2, 269 bool receiver_can_be_null = false); 270 #if INCLUDE_JVMCI 271 void profile_called_method(Register method, Register mdp, Register reg2); 272 #endif 273 void profile_ret(Register return_bci, Register mdp); 274 void profile_null_seen(Register mdp); 275 void profile_typecheck(Register mdp, Register klass, Register scratch); 276 void profile_typecheck_failed(Register mdp); 277 void profile_switch_default(Register mdp); 278 void profile_switch_case(Register index_in_scratch, Register mdp, 279 Register scratch2); 280 281 // Debugging 282 // only if +VerifyOops && state == atos 283 void verify_oop(Register reg, TosState state = atos); 284 // only if +VerifyFPU && (state == ftos || state == dtos) 285 void verify_FPU(int stack_depth, TosState state = ftos); 286 287 #endif // !CC_INTERP 288 289 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 290 291 // support for jvmti/dtrace 292 void notify_method_entry(); 293 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 294 295 private: 296 297 Register _locals_register; // register that contains the pointer to the locals 298 Register _bcp_register; // register that contains the bcp 299 300 public: 301 #ifndef CC_INTERP 302 void profile_obj_type(Register obj, const Address& mdo_addr); 303 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 304 void profile_return_type(Register mdp, Register ret, Register tmp); 305 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2); 306 #endif /* !CC_INTERP */ 307 308 }; 309 310 #endif // CPU_X86_VM_INTERP_MASM_X86_HPP