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 CC_INTERP 26 protected: 27 // Interpreter specific version of call_VM_base 28 virtual void call_VM_leaf_base(address entry_point, 29 int number_of_arguments); 30 31 virtual void call_VM_base(Register oop_result, 32 Register java_thread, 33 Register last_java_sp, 34 address entry_point, 35 int number_of_arguments, 36 bool check_exceptions); 37 38 virtual void check_and_handle_popframe(Register java_thread); 39 virtual void check_and_handle_earlyret(Register java_thread); 40 41 // base routine for all dispatches 42 void dispatch_base(TosState state, address* table, bool verifyoop = true); 43 #endif // CC_INTERP 44 45 public: 46 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code), _locals_register(r14), _bcp_register(r13) {} 47 48 void load_earlyret_value(TosState state); 49 50 #ifdef CC_INTERP 51 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 52 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 53 54 // Helpers for runtime call arguments/results 55 void get_method(Register reg); 56 57 #else 58 59 // Interpreter-specific registers 60 void save_bcp() { 61 movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13); 62 } 63 64 void restore_bcp() { 65 movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); 66 } 67 68 void restore_locals() { 69 movptr(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); 70 } 71 72 // Helpers for runtime call arguments/results 73 void get_method(Register reg) { 74 movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); 75 } 76 77 void get_const(Register reg) { 78 get_method(reg); 79 movptr(reg, Address(reg, Method::const_offset())); 80 } 81 82 void get_constant_pool(Register reg) { 83 get_const(reg); 84 movptr(reg, Address(reg, ConstMethod::constants_offset())); 85 } 86 87 void get_constant_pool_cache(Register reg) { 88 get_constant_pool(reg); 89 movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); 90 } 91 92 void get_cpool_and_tags(Register cpool, Register tags) { 93 get_constant_pool(cpool); 94 movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 95 } 96 97 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 98 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 99 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)); 100 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 101 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 102 void get_method_counters(Register method, Register mcs, Label& skip); 103 104 // load cpool->resolved_references(index); 105 void load_resolved_reference_at_index(Register result, Register index); 106 107 void pop_ptr(Register r = rax); 108 void pop_i(Register r = rax); 109 void pop_l(Register r = rax); 110 void pop_f(XMMRegister r = xmm0); 111 void pop_d(XMMRegister r = xmm0); 112 void push_ptr(Register r = rax); 113 void push_i(Register r = rax); 114 void push_l(Register r = rax); 115 void push_f(XMMRegister r = xmm0); 116 void push_d(XMMRegister r = xmm0); 117 118 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 119 120 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 121 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 122 123 void pop(TosState state); // transition vtos -> state 124 void push(TosState state); // transition state -> vtos 125 126 void empty_expression_stack() { 127 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 128 // NULL last_sp until next java call 129 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 130 } 131 132 // Helpers for swap and dup 133 void load_ptr(int n, Register val); 134 void store_ptr(int n, Register val); 135 136 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 137 // a subtype of super_klass. 138 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 139 140 // Dispatching 141 void dispatch_prolog(TosState state, int step = 0); 142 void dispatch_epilog(TosState state, int step = 0); 143 // dispatch via ebx (assume ebx is loaded already) 144 void dispatch_only(TosState state); 145 // dispatch normal table via ebx (assume ebx is loaded already) 146 void dispatch_only_normal(TosState state); 147 void dispatch_only_noverify(TosState state); 148 // load ebx from [esi + step] and dispatch via ebx 149 void dispatch_next(TosState state, int step = 0); 150 // load ebx from [esi] and dispatch via ebx and table 151 void dispatch_via (TosState state, address* table); 152 153 // jump to an invoked target 154 void prepare_to_jump_from_interpreted(); 155 void jump_from_interpreted(Register method, Register temp); 156 157 158 // Returning from interpreted functions 159 // 160 // Removes the current activation (incl. unlocking of monitors) 161 // and sets up the return address. This code is also used for 162 // exception unwindwing. In that case, we do not want to throw 163 // IllegalMonitorStateExceptions, since that might get us into an 164 // infinite rethrow exception loop. 165 // Additionally this code is used for popFrame and earlyReturn. 166 // In popFrame case we want to skip throwing an exception, 167 // installing an exception, and notifying jvmdi. 168 // In earlyReturn case we only want to skip throwing an exception 169 // and installing an exception. 170 void remove_activation(TosState state, Register ret_addr, 171 bool throw_monitor_exception = true, 172 bool install_monitor_exception = true, 173 bool notify_jvmdi = true); 174 #endif // CC_INTERP 175 176 // Object locking 177 void lock_object (Register lock_reg); 178 void unlock_object(Register lock_reg); 179 180 #ifndef CC_INTERP 181 182 // Interpreter profiling operations 183 void set_method_data_pointer_for_bcp(); 184 void test_method_data_pointer(Register mdp, Label& zero_continue); 185 void verify_method_data_pointer(); 186 187 void set_mdp_data_at(Register mdp_in, int constant, Register value); 188 void increment_mdp_data_at(Address data, bool decrement = false); 189 void increment_mdp_data_at(Register mdp_in, int constant, 190 bool decrement = false); 191 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 192 bool decrement = false); 193 void increment_mask_and_jump(Address counter_addr, 194 int increment, int mask, 195 Register scratch, bool preloaded, 196 Condition cond, Label* where); 197 void set_mdp_flag_at(Register mdp_in, int flag_constant); 198 void test_mdp_data_at(Register mdp_in, int offset, Register value, 199 Register test_value_out, 200 Label& not_equal_continue); 201 202 void record_klass_in_profile(Register receiver, Register mdp, 203 Register reg2, bool is_virtual_call); 204 void record_klass_in_profile_helper(Register receiver, Register mdp, 205 Register reg2, int start_row, 206 Label& done, bool is_virtual_call); 207 208 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 209 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 210 void update_mdp_by_constant(Register mdp_in, int constant); 211 void update_mdp_for_ret(Register return_bci); 212 213 void profile_taken_branch(Register mdp, Register bumped_count); 214 void profile_not_taken_branch(Register mdp); 215 void profile_call(Register mdp); 216 void profile_final_call(Register mdp); 217 void profile_virtual_call(Register receiver, Register mdp, 218 Register scratch2, 219 bool receiver_can_be_null = false); 220 void profile_ret(Register return_bci, Register mdp); 221 void profile_null_seen(Register mdp); 222 void profile_typecheck(Register mdp, Register klass, Register scratch); 223 void profile_typecheck_failed(Register mdp); 224 void profile_switch_default(Register mdp); 225 void profile_switch_case(Register index_in_scratch, Register mdp, 226 Register scratch2); 227 228 // Debugging 229 // only if +VerifyOops && state == atos 230 void verify_oop(Register reg, TosState state = atos); 231 // only if +VerifyFPU && (state == ftos || state == dtos) 232 void verify_FPU(int stack_depth, TosState state = ftos); 233 234 #endif // !CC_INTERP 235 236 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 237 238 // support for jvmti/dtrace 239 void notify_method_entry(); 240 void notify_method_exit(TosState state, NotifyMethodExitMode mode);