1 /* 2 * Copyright (c) 2003, 2012, 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 "assembler_x86.inline.hpp" 29 #include "interpreter/invocationCounter.hpp" 30 31 // This file specializes the assember with interpreter-specific macros 32 33 34 class InterpreterMacroAssembler: public MacroAssembler { 35 #ifndef CC_INTERP 36 protected: 37 // Interpreter specific version of call_VM_base 38 virtual void call_VM_leaf_base(address entry_point, 39 int number_of_arguments); 40 41 virtual void call_VM_base(Register oop_result, 42 Register java_thread, 43 Register last_java_sp, 44 address entry_point, 45 int number_of_arguments, 46 bool check_exceptions); 47 48 virtual void check_and_handle_popframe(Register java_thread); 49 virtual void check_and_handle_earlyret(Register java_thread); 50 51 // base routine for all dispatches 52 void dispatch_base(TosState state, address* table, bool verifyoop = true); 53 #endif // CC_INTERP 54 55 public: 56 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 57 58 void load_earlyret_value(TosState state); 59 60 #ifdef CC_INTERP 61 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 62 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 63 64 // Helpers for runtime call arguments/results 65 void get_method(Register reg); 66 67 #else 68 69 // Interpreter-specific registers 70 void save_bcp() { 71 movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13); 72 } 73 74 void restore_bcp() { 75 movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); 76 } 77 78 void restore_locals() { 79 movptr(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); 80 } 81 82 // Helpers for runtime call arguments/results 83 void get_method(Register reg) { 84 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); 85 } 86 87 void get_const(Register reg) { 88 get_method(reg); 89 movptr(reg, Address(reg, methodOopDesc::const_offset())); 90 } 91 92 void get_constant_pool(Register reg) { 93 get_const(reg); 94 movptr(reg, Address(reg, constMethodOopDesc::constants_offset())); 95 } 96 97 void get_constant_pool_cache(Register reg) { 98 get_constant_pool(reg); 99 movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); 100 } 101 102 void get_cpool_and_tags(Register cpool, Register tags) { 103 get_constant_pool(cpool); 104 movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes())); 105 } 106 107 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 108 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 109 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)); 110 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 111 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 112 113 void pop_ptr(Register r = rax); 114 void pop_i(Register r = rax); 115 void pop_l(Register r = rax); 116 void pop_f(XMMRegister r = xmm0); 117 void pop_d(XMMRegister r = xmm0); 118 void push_ptr(Register r = rax); 119 void push_i(Register r = rax); 120 void push_l(Register r = rax); 121 void push_f(XMMRegister r = xmm0); 122 void push_d(XMMRegister r = xmm0); 123 124 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 125 126 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 127 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 128 129 void pop(TosState state); // transition vtos -> state 130 void push(TosState state); // transition state -> vtos 131 132 void empty_expression_stack() { 133 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 134 // NULL last_sp until next java call 135 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 136 } 137 138 // Helpers for swap and dup 139 void load_ptr(int n, Register val); 140 void store_ptr(int n, Register val); 141 142 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 143 // a subtype of super_klass. 144 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 145 146 // Dispatching 147 void dispatch_prolog(TosState state, int step = 0); 148 void dispatch_epilog(TosState state, int step = 0); 149 // dispatch via ebx (assume ebx is loaded already) 150 void dispatch_only(TosState state); 151 // dispatch normal table via ebx (assume ebx is loaded already) 152 void dispatch_only_normal(TosState state); 153 void dispatch_only_noverify(TosState state); 154 // load ebx from [esi + step] and dispatch via ebx 155 void dispatch_next(TosState state, int step = 0); 156 // load ebx from [esi] and dispatch via ebx and table 157 void dispatch_via (TosState state, address* table); 158 159 // jump to an invoked target 160 void prepare_to_jump_from_interpreted(); 161 void jump_from_interpreted(Register method, Register temp); 162 163 164 // Returning from interpreted functions 165 // 166 // Removes the current activation (incl. unlocking of monitors) 167 // and sets up the return address. This code is also used for 168 // exception unwindwing. In that case, we do not want to throw 169 // IllegalMonitorStateExceptions, since that might get us into an 170 // infinite rethrow exception loop. 171 // Additionally this code is used for popFrame and earlyReturn. 172 // In popFrame case we want to skip throwing an exception, 173 // installing an exception, and notifying jvmdi. 174 // In earlyReturn case we only want to skip throwing an exception 175 // and installing an exception. 176 void remove_activation(TosState state, Register ret_addr, 177 bool throw_monitor_exception = true, 178 bool install_monitor_exception = true, 179 bool notify_jvmdi = true); 180 #endif // CC_INTERP 181 182 // Object locking 183 void lock_object (Register lock_reg); 184 void unlock_object(Register lock_reg); 185 186 #ifndef CC_INTERP 187 188 // Interpreter profiling operations 189 void set_method_data_pointer_for_bcp(); 190 void test_method_data_pointer(Register mdp, Label& zero_continue); 191 void verify_method_data_pointer(); 192 193 void set_mdp_data_at(Register mdp_in, int constant, Register value); 194 void increment_mdp_data_at(Address data, bool decrement = false); 195 void increment_mdp_data_at(Register mdp_in, int constant, 196 bool decrement = false); 197 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 198 bool decrement = false); 199 void increment_mask_and_jump(Address counter_addr, 200 int increment, int mask, 201 Register scratch, bool preloaded, 202 Condition cond, Label* where); 203 void set_mdp_flag_at(Register mdp_in, int flag_constant); 204 void test_mdp_data_at(Register mdp_in, int offset, Register value, 205 Register test_value_out, 206 Label& not_equal_continue); 207 208 void record_klass_in_profile(Register receiver, Register mdp, 209 Register reg2, bool is_virtual_call); 210 void record_klass_in_profile_helper(Register receiver, Register mdp, 211 Register reg2, int start_row, 212 Label& done, bool is_virtual_call); 213 214 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 215 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 216 void update_mdp_by_constant(Register mdp_in, int constant); 217 void update_mdp_for_ret(Register return_bci); 218 219 void profile_taken_branch(Register mdp, Register bumped_count); 220 void profile_not_taken_branch(Register mdp); 221 void profile_call(Register mdp); 222 void profile_final_call(Register mdp); 223 void profile_virtual_call(Register receiver, Register mdp, 224 Register scratch2, 225 bool receiver_can_be_null = false); 226 void profile_ret(Register return_bci, Register mdp); 227 void profile_null_seen(Register mdp); 228 void profile_typecheck(Register mdp, Register klass, Register scratch); 229 void profile_typecheck_failed(Register mdp); 230 void profile_switch_default(Register mdp); 231 void profile_switch_case(Register index_in_scratch, Register mdp, 232 Register scratch2); 233 234 // Debugging 235 // only if +VerifyOops && state == atos 236 void verify_oop(Register reg, TosState state = atos); 237 // only if +VerifyFPU && (state == ftos || state == dtos) 238 void verify_FPU(int stack_depth, TosState state = ftos); 239 240 #endif // !CC_INTERP 241 242 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 243 244 // support for jvmti/dtrace 245 void notify_method_entry(); 246 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 247 }; 248 249 #endif // CPU_X86_VM_INTERP_MASM_X86_64_HPP