1 /* 2 * Copyright (c) 1997, 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_32_HPP 26 #define CPU_X86_VM_INTERP_MASM_X86_32_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( 41 address entry_point, 42 int number_of_arguments 43 ); 44 45 virtual void call_VM_base( 46 Register oop_result, 47 Register java_thread, 48 Register last_java_sp, 49 address entry_point, 50 int number_of_arguments, 51 bool check_exceptions 52 ); 53 54 virtual void check_and_handle_popframe(Register java_thread); 55 virtual void check_and_handle_earlyret(Register java_thread); 56 57 // base routine for all dispatches 58 void dispatch_base(TosState state, address* table, bool verifyoop = true); 59 #endif /* CC_INTERP */ 60 61 public: 62 InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} 63 64 void load_earlyret_value(TosState state); 65 66 // Interpreter-specific registers 67 #ifdef CC_INTERP 68 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 69 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 70 71 // Helpers for runtime call arguments/results 72 void get_method(Register reg); 73 74 #else 75 76 void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); } 77 void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); } 78 void restore_locals() { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); } 79 80 // Helpers for runtime call arguments/results 81 void get_method(Register reg) { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); } 82 void get_const(Register reg) { get_method(reg); movptr(reg, Address(reg, Method::const_offset())); } 83 void get_constant_pool(Register reg) { get_const(reg); movptr(reg, Address(reg, ConstMethod::constants_offset())); } 84 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); } 85 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); 86 } 87 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 88 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 89 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)); 90 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 91 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 92 void get_method_counters(Register method, Register mcs, Label& skip); 93 94 // load cpool->resolved_references(index); 95 void load_resolved_reference_at_index(Register result, Register index); 96 97 // Expression stack 98 void f2ieee(); // truncate ftos to 32bits 99 void d2ieee(); // truncate dtos to 64bits 100 101 void pop_ptr(Register r = rax); 102 void pop_i(Register r = rax); 103 void pop_l(Register lo = rax, Register hi = rdx); 104 void pop_f(); 105 void pop_d(); 106 107 void push_ptr(Register r = rax); 108 void push_i(Register r = rax); 109 void push_l(Register lo = rax, Register hi = rdx); 110 void push_d(Register r = rax); 111 void push_f(); 112 113 void pop(TosState state); // transition vtos -> state 114 void push(TosState state); // transition state -> vtos 115 116 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 117 118 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 119 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 120 121 // These are dummies to prevent surprise implicit conversions to Register 122 void pop(void* v ); // Add unimplemented ambiguous method 123 void push(void* v ); // Add unimplemented ambiguous method 124 125 void empty_expression_stack() { 126 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 127 // NULL last_sp until next java call 128 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); 129 } 130 131 // Helpers for swap and dup 132 void load_ptr(int n, Register val); 133 void store_ptr(int n, Register val); 134 135 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 136 // a subtype of super_klass. EAX holds the super_klass. Blows ECX 137 // and EDI. Register sub_klass cannot be any of the above. 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 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already) 144 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already) 145 void dispatch_only_noverify(TosState state); 146 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx, 147 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table 148 149 150 // jump to an invoked target 151 void prepare_to_jump_from_interpreted(); 152 void jump_from_interpreted(Register method, Register temp); 153 154 // Returning from interpreted functions 155 // 156 // Removes the current activation (incl. unlocking of monitors) 157 // and sets up the return address. This code is also used for 158 // exception unwindwing. In that case, we do not want to throw 159 // IllegalMonitorStateExceptions, since that might get us into an 160 // infinite rethrow exception loop. 161 // Additionally this code is used for popFrame and earlyReturn. 162 // In popFrame case we want to skip throwing an exception, 163 // installing an exception, and notifying jvmdi. 164 // In earlyReturn case we only want to skip throwing an exception 165 // and installing an exception. 166 void remove_activation(TosState state, Register ret_addr, 167 bool throw_monitor_exception = true, 168 bool install_monitor_exception = true, 169 bool notify_jvmdi = true); 170 #endif /* !CC_INTERP */ 171 172 // Debugging 173 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos 174 #ifndef CC_INTERP 175 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos) 176 177 #endif /* !CC_INTERP */ 178 179 // Object locking 180 void lock_object (Register lock_reg); 181 void unlock_object(Register lock_reg); 182 183 #ifndef CC_INTERP 184 185 // Interpreter profiling operations 186 void set_method_data_pointer_for_bcp(); 187 void test_method_data_pointer(Register mdp, Label& zero_continue); 188 void verify_method_data_pointer(); 189 190 void set_mdp_data_at(Register mdp_in, int constant, Register value); 191 void increment_mdp_data_at(Address data, bool decrement = false); 192 void increment_mdp_data_at(Register mdp_in, int constant, 193 bool decrement = false); 194 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 195 bool decrement = false); 196 void increment_mask_and_jump(Address counter_addr, 197 int increment, int mask, 198 Register scratch, bool preloaded, 199 Condition cond, Label* where); 200 void set_mdp_flag_at(Register mdp_in, int flag_constant); 201 void test_mdp_data_at(Register mdp_in, int offset, Register value, 202 Register test_value_out, 203 Label& not_equal_continue); 204 205 void record_klass_in_profile(Register receiver, Register mdp, 206 Register reg2, bool is_virtual_call); 207 void record_klass_in_profile_helper(Register receiver, Register mdp, 208 Register reg2, int start_row, 209 Label& done, bool is_virtual_call); 210 211 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 212 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 213 void update_mdp_by_constant(Register mdp_in, int constant); 214 void update_mdp_for_ret(Register return_bci); 215 216 void profile_taken_branch(Register mdp, Register bumped_count); 217 void profile_not_taken_branch(Register mdp); 218 void profile_obj_type(Register obj, const Address& mdo_addr); 219 void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); 220 void profile_return_type(Register mdp, Register ret, Register tmp); 221 void profile_call(Register mdp); 222 void profile_final_call(Register mdp); 223 void profile_virtual_call(Register receiver, Register mdp, Register scratch2, 224 bool receiver_can_be_null = false); 225 void profile_ret(Register return_bci, Register mdp); 226 void profile_null_seen(Register mdp); 227 void profile_typecheck(Register mdp, Register klass, Register scratch); 228 void profile_typecheck_failed(Register mdp); 229 void profile_switch_default(Register mdp); 230 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2); 231 232 #endif /* !CC_INTERP */ 233 234 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 235 236 // support for jvmti 237 void notify_method_entry(); 238 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 239 240 }; 241 242 #endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP