1 /* 2 * Copyright (c) 2003, 2013, 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_64_HPP 26 #define CPU_X86_VM_INTERP_MASM_X86_64_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 36 class InterpreterMacroAssembler: public MacroAssembler { 37 #ifndef CC_INTERP 38 protected: 39 // Interpreter specific version of call_VM_base 40 virtual void call_VM_leaf_base(address entry_point, 41 int number_of_arguments); 42 43 virtual void call_VM_base(Register oop_result, 44 Register java_thread, 45 Register last_java_sp, 46 address entry_point, 47 int number_of_arguments, 48 bool check_exceptions); 49 50 virtual void check_and_handle_popframe(Register java_thread); 51 virtual void check_and_handle_earlyret(Register java_thread); 52 53 // base routine for all dispatches 54 void dispatch_base(TosState state, address* table, bool verifyoop = true); 55 #endif // CC_INTERP 56 57 public: 58 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 59 60 void load_earlyret_value(TosState state); 61 62 #ifdef CC_INTERP 63 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 64 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 65 66 // Helpers for runtime call arguments/results 67 void get_method(Register reg); 68 69 #else 70 71 // Interpreter-specific registers 72 void save_bcp() { 73 movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13); 74 } 75 76 void restore_bcp() { 77 movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); 78 } 79 80 void restore_locals() { 81 movptr(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); 82 } 83 84 // Helpers for runtime call arguments/results 85 void get_method(Register reg) { 86 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); 87 } 88 89 void get_const(Register reg) { 90 get_method(reg); 91 movptr(reg, Address(reg, Method::const_offset())); 92 } 93 94 void get_constant_pool(Register reg) { 95 get_const(reg); 96 movptr(reg, Address(reg, ConstMethod::constants_offset())); 97 } 98 99 void get_constant_pool_cache(Register reg) { 100 get_constant_pool(reg); 101 movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); 102 } 103 104 void get_cpool_and_tags(Register cpool, Register tags) { 105 get_constant_pool(cpool); 106 movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 107 } 108 109 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 110 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 111 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)); 112 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 113 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 114 void get_method_counters(Register method, Register mcs, Label& skip); 115 116 // load cpool->resolved_references(index); 117 void load_resolved_reference_at_index(Register result, Register index); 118 119 void pop_ptr(Register r = rax); 120 void pop_i(Register r = rax); 121 void pop_l(Register r = rax); 122 void pop_f(XMMRegister r = xmm0); 123 void pop_d(XMMRegister r = xmm0); 124 void push_ptr(Register r = rax); 125 void push_i(Register r = rax); 126 void push_l(Register r = rax); 127 void push_f(XMMRegister r = xmm0); 128 void push_d(XMMRegister r = xmm0); 129 130 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 131 132 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 133 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 134 135 void pop(TosState state); // transition vtos -> state 136 void push(TosState state); // transition state -> vtos 137 138 void empty_expression_stack() { 139 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 140 // NULL last_sp until next java call 141 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 142 } 143 144 // Helpers for swap and dup 145 void load_ptr(int n, Register val); 146 void store_ptr(int n, Register val); 147 148 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 149 // a subtype of super_klass. 150 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 151 152 // Dispatching 153 void dispatch_prolog(TosState state, int step = 0); 154 void dispatch_epilog(TosState state, int step = 0); 155 // dispatch via ebx (assume ebx is loaded already) 156 void dispatch_only(TosState state); 157 // dispatch normal table via ebx (assume ebx is loaded already) 158 void dispatch_only_normal(TosState state); 159 void dispatch_only_noverify(TosState state); 160 // load ebx from [esi + step] and dispatch via ebx 161 void dispatch_next(TosState state, int step = 0); 162 // load ebx from [esi] and dispatch via ebx and table 163 void dispatch_via (TosState state, address* table); 164 165 // jump to an invoked target 166 void prepare_to_jump_from_interpreted(); 167 void jump_from_interpreted(Register method, Register temp); 168 169 170 // Returning from interpreted functions 171 // 172 // Removes the current activation (incl. unlocking of monitors) 173 // and sets up the return address. This code is also used for 174 // exception unwindwing. In that case, we do not want to throw 175 // IllegalMonitorStateExceptions, since that might get us into an 176 // infinite rethrow exception loop. 177 // Additionally this code is used for popFrame and earlyReturn. 178 // In popFrame case we want to skip throwing an exception, 179 // installing an exception, and notifying jvmdi. 180 // In earlyReturn case we only want to skip throwing an exception 181 // and installing an exception. 182 void remove_activation(TosState state, Register ret_addr, 183 bool throw_monitor_exception = true, 184 bool install_monitor_exception = true, 185 bool notify_jvmdi = true); 186 #endif // CC_INTERP 187 188 // Object locking 189 void lock_object (Register lock_reg); 190 void unlock_object(Register lock_reg); 191 192 #ifndef CC_INTERP 193 194 // Interpreter profiling operations 195 void set_method_data_pointer_for_bcp(); 196 void test_method_data_pointer(Register mdp, Label& zero_continue); 197 void verify_method_data_pointer(); 198 199 void set_mdp_data_at(Register mdp_in, int constant, Register value); 200 void increment_mdp_data_at(Address data, bool decrement = false); 201 void increment_mdp_data_at(Register mdp_in, int constant, 202 bool decrement = false); 203 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 204 bool decrement = false); 205 void increment_mask_and_jump(Address counter_addr, 206 int increment, int mask, 207 Register scratch, bool preloaded, 208 Condition cond, Label* where); 209 void set_mdp_flag_at(Register mdp_in, int flag_constant); 210 void test_mdp_data_at(Register mdp_in, int offset, Register value, 211 Register test_value_out, 212 Label& not_equal_continue); 213 214 void record_klass_in_profile(Register receiver, Register mdp, 215 Register reg2, bool is_virtual_call); 216 void record_klass_in_profile_helper(Register receiver, Register mdp, 217 Register reg2, int start_row, 218 Label& done, bool is_virtual_call); 219 220 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 221 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 222 void update_mdp_by_constant(Register mdp_in, int constant); 223 void update_mdp_for_ret(Register return_bci); 224 225 void profile_taken_branch(Register mdp, Register bumped_count); 226 void profile_not_taken_branch(Register mdp); 227 void profile_obj_type(Register obj, const Address& mdo_addr); 228 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 229 void profile_call(Register mdp); 230 void profile_final_call(Register mdp); 231 void profile_virtual_call(Register receiver, Register mdp, 232 Register scratch2, 233 bool receiver_can_be_null = false); 234 void profile_ret(Register return_bci, Register mdp); 235 void profile_null_seen(Register mdp); 236 void profile_typecheck(Register mdp, Register klass, Register scratch); 237 void profile_typecheck_failed(Register mdp); 238 void profile_switch_default(Register mdp); 239 void profile_switch_case(Register index_in_scratch, Register mdp, 240 Register scratch2); 241 242 // Debugging 243 // only if +VerifyOops && state == atos 244 void verify_oop(Register reg, TosState state = atos); 245 // only if +VerifyFPU && (state == ftos || state == dtos) 246 void verify_FPU(int stack_depth, TosState state = ftos); 247 248 #endif // !CC_INTERP 249 250 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 251 252 // support for jvmti/dtrace 253 void notify_method_entry(); 254 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 255 }; 256 257 #endif // CPU_X86_VM_INTERP_MASM_X86_64_HPP