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 jump_to_entry(address entry); 65 66 void load_earlyret_value(TosState state); 67 68 #ifdef CC_INTERP 69 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 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 78 void save_bcp() { 79 movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), _bcp_register); 80 } 81 82 void restore_bcp() { 83 movptr(_bcp_register, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize)); 84 } 85 86 void restore_locals() { 87 movptr(_locals_register, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); 88 } 89 90 // Helpers for runtime call arguments/results 91 void get_method(Register reg) { 92 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); 93 } 94 95 void get_const(Register reg) { 96 get_method(reg); 97 movptr(reg, Address(reg, Method::const_offset())); 98 } 99 100 void get_constant_pool(Register reg) { 101 get_const(reg); 102 movptr(reg, Address(reg, ConstMethod::constants_offset())); 103 } 104 105 void get_constant_pool_cache(Register reg) { 106 get_constant_pool(reg); 107 movptr(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 movptr(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, 117 Register index, 118 int bcp_offset, 119 size_t index_size = sizeof(u2)); 120 void get_cache_and_index_and_bytecode_at_bcp(Register cache, 121 Register index, 122 Register bytecode, 123 int byte_no, 124 int bcp_offset, 125 size_t index_size = sizeof(u2)); 126 void get_cache_entry_pointer_at_bcp(Register cache, 127 Register tmp, 128 int bcp_offset, 129 size_t index_size = sizeof(u2)); 130 void get_cache_index_at_bcp(Register index, 131 int bcp_offset, 132 size_t index_size = sizeof(u2)); 133 134 // load cpool->resolved_references(index); 135 void load_resolved_reference_at_index(Register result, Register index); 136 137 NOT_LP64(void f2ieee();) // truncate ftos to 32bits 138 NOT_LP64(void d2ieee();) // truncate dtos to 64bits 139 140 // Expression stack 141 void pop_ptr(Register r = rax); 142 void pop_i(Register r = rax); 143 void push_ptr(Register r = rax); 144 void push_i(Register r = rax); 145 146 void push_f(XMMRegister r); 147 void pop_f(XMMRegister r); 148 void pop_d(XMMRegister r); 149 void push_d(XMMRegister r); 150 #ifdef _LP64 151 void pop_l(Register r = rax); 152 void push_l(Register r = rax); 153 #else 154 void pop_l(Register lo = rax, Register hi = rdx); 155 void pop_f(); 156 void pop_d(); 157 158 void push_l(Register lo = rax, Register hi = rdx); 159 void push_d(); 160 void push_f(); 161 #endif // _LP64 162 163 void pop(Register r) { ((MacroAssembler*)this)->pop(r); } 164 void push(Register r) { ((MacroAssembler*)this)->push(r); } 165 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 166 167 void pop(TosState state); // transition vtos -> state 168 void push(TosState state); // transition state -> vtos 169 170 // These are dummies to prevent surprise implicit conversions to Register 171 void pop(void* v); // Add unimplemented ambiguous method 172 void push(void* v); // Add unimplemented ambiguous method 173 174 void empty_expression_stack() { 175 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 176 // NULL last_sp until next java call 177 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 178 NOT_LP64(empty_FPU_stack()); 179 } 180 181 // Helpers for swap and dup 182 void load_ptr(int n, Register val); 183 void store_ptr(int n, Register val); 184 185 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 186 // a subtype of super_klass. 187 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 188 189 // Dispatching 190 void dispatch_prolog(TosState state, int step = 0); 191 void dispatch_epilog(TosState state, int step = 0); 192 // dispatch via rbx (assume rbx is loaded already) 193 void dispatch_only(TosState state); 194 // dispatch normal table via rbx (assume rbx is loaded already) 195 void dispatch_only_normal(TosState state); 196 void dispatch_only_noverify(TosState state); 197 // load rbx from [_bcp_register + step] and dispatch via rbx 198 void dispatch_next(TosState state, int step = 0); 199 // load rbx from [_bcp_register] and dispatch via rbx and table 200 void dispatch_via (TosState state, address* table); 201 202 // jump to an invoked target 203 void prepare_to_jump_from_interpreted(); 204 void jump_from_interpreted(Register method, Register temp); 205 206 // Returning from interpreted functions 207 // 208 // Removes the current activation (incl. unlocking of monitors) 209 // and sets up the return address. This code is also used for 210 // exception unwindwing. In that case, we do not want to throw 211 // IllegalMonitorStateExceptions, since that might get us into an 212 // infinite rethrow exception loop. 213 // Additionally this code is used for popFrame and earlyReturn. 214 // In popFrame case we want to skip throwing an exception, 215 // installing an exception, and notifying jvmdi. 216 // In earlyReturn case we only want to skip throwing an exception 217 // and installing an exception. 218 void remove_activation(TosState state, Register ret_addr, 219 bool throw_monitor_exception = true, 220 bool install_monitor_exception = true, 221 bool notify_jvmdi = true); 222 #endif // CC_INTERP 223 void get_method_counters(Register method, Register mcs, Label& skip); 224 225 // Object locking 226 void lock_object (Register lock_reg); 227 void unlock_object(Register lock_reg); 228 229 #ifndef CC_INTERP 230 231 // Interpreter profiling operations 232 void set_method_data_pointer_for_bcp(); 233 void test_method_data_pointer(Register mdp, Label& zero_continue); 234 void verify_method_data_pointer(); 235 236 void set_mdp_data_at(Register mdp_in, int constant, Register value); 237 void increment_mdp_data_at(Address data, bool decrement = false); 238 void increment_mdp_data_at(Register mdp_in, int constant, 239 bool decrement = false); 240 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 241 bool decrement = false); 242 void increment_mask_and_jump(Address counter_addr, 243 int increment, Address mask, 244 Register scratch, bool preloaded, 245 Condition cond, Label* where); 246 void set_mdp_flag_at(Register mdp_in, int flag_constant); 247 void test_mdp_data_at(Register mdp_in, int offset, Register value, 248 Register test_value_out, 249 Label& not_equal_continue); 250 251 void record_klass_in_profile(Register receiver, Register mdp, 252 Register reg2, bool is_virtual_call); 253 void record_klass_in_profile_helper(Register receiver, Register mdp, 254 Register reg2, int start_row, 255 Label& done, bool is_virtual_call); 256 void record_item_in_profile_helper(Register item, Register mdp, 257 Register reg2, int start_row, Label& done, int total_rows, 258 OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, 259 int non_profiled_offset); 260 261 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 262 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 263 void update_mdp_by_constant(Register mdp_in, int constant); 264 void update_mdp_for_ret(Register return_bci); 265 266 void profile_taken_branch(Register mdp, Register bumped_count); 267 void profile_not_taken_branch(Register mdp); 268 void profile_call(Register mdp); 269 void profile_final_call(Register mdp); 270 void profile_virtual_call(Register receiver, Register mdp, 271 Register scratch2, 272 bool receiver_can_be_null = false); 273 void profile_called_method(Register method, Register mdp, Register reg2) NOT_JVMCI_RETURN; 274 void profile_ret(Register return_bci, Register mdp); 275 void profile_null_seen(Register mdp); 276 void profile_typecheck(Register mdp, Register klass, Register scratch); 277 void profile_typecheck_failed(Register mdp); 278 void profile_switch_default(Register mdp); 279 void profile_switch_case(Register index_in_scratch, Register mdp, 280 Register scratch2); 281 282 // Debugging 283 // only if +VerifyOops && state == atos 284 void verify_oop(Register reg, TosState state = atos); 285 // only if +VerifyFPU && (state == ftos || state == dtos) 286 void verify_FPU(int stack_depth, TosState state = ftos); 287 288 #endif // !CC_INTERP 289 290 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 291 292 // support for jvmti/dtrace 293 void notify_method_entry(); 294 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 295 296 private: 297 298 Register _locals_register; // register that contains the pointer to the locals 299 Register _bcp_register; // register that contains the bcp 300 301 public: 302 #ifndef CC_INTERP 303 void profile_obj_type(Register obj, const Address& mdo_addr); 304 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 305 void profile_return_type(Register mdp, Register ret, Register tmp); 306 void profile_parameters_type(Register mdp, Register tmp1, Register tmp2); 307 #endif /* !CC_INTERP */ 308 309 }; 310 311 #endif // CPU_X86_VM_INTERP_MASM_X86_HPP