1 /* 2 * Copyright (c) 1997, 2011, 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 "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( 39 address entry_point, 40 int number_of_arguments 41 ); 42 43 virtual void call_VM_base( 44 Register oop_result, 45 Register java_thread, 46 Register last_java_sp, 47 address entry_point, 48 int number_of_arguments, 49 bool check_exceptions 50 ); 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 62 void load_earlyret_value(TosState state); 63 64 // Interpreter-specific registers 65 #ifdef CC_INTERP 66 void save_bcp() { /* not needed in c++ interpreter and harmless */ } 67 void restore_bcp() { /* not needed in c++ interpreter and harmless */ } 68 69 // Helpers for runtime call arguments/results 70 void get_method(Register reg); 71 72 #else 73 74 void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); } 75 void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); } 76 void restore_locals() { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); } 77 78 // Helpers for runtime call arguments/results 79 void get_method(Register reg) { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); } 80 void get_constant_pool(Register reg) { get_method(reg); movptr(reg, Address(reg, methodOopDesc::constants_offset())); } 81 void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); } 82 void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes())); 83 } 84 void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); 85 void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 86 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)); 87 void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); 88 void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); 89 90 // Expression stack 91 void f2ieee(); // truncate ftos to 32bits 92 void d2ieee(); // truncate dtos to 64bits 93 94 void pop_ptr(Register r = rax); 95 void pop_i(Register r = rax); 96 void pop_l(Register lo = rax, Register hi = rdx); 97 void pop_f(); 98 void pop_d(); 99 100 void push_ptr(Register r = rax); 101 void push_i(Register r = rax); 102 void push_l(Register lo = rax, Register hi = rdx); 103 void push_d(Register r = rax); 104 void push_f(); 105 106 void pop(TosState state); // transition vtos -> state 107 void push(TosState state); // transition state -> vtos 108 109 void pop(Register r ) { ((MacroAssembler*)this)->pop(r); } 110 111 void push(Register r ) { ((MacroAssembler*)this)->push(r); } 112 void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } 113 114 // These are dummies to prevent surprise implicit conversions to Register 115 void pop(void* v ); // Add unimplemented ambiguous method 116 void push(void* v ); // Add unimplemented ambiguous method 117 118 void empty_expression_stack() { 119 movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); 120 // NULL last_sp until next java call 121 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); 122 } 123 124 // Helpers for swap and dup 125 void load_ptr(int n, Register val); 126 void store_ptr(int n, Register val); 127 128 // Generate a subtype check: branch to ok_is_subtype if sub_klass is 129 // a subtype of super_klass. EAX holds the super_klass. Blows ECX 130 // and EDI. Register sub_klass cannot be any of the above. 131 void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); 132 133 // Dispatching 134 void dispatch_prolog(TosState state, int step = 0); 135 void dispatch_epilog(TosState state, int step = 0); 136 void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already) 137 void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already) 138 void dispatch_only_noverify(TosState state); 139 void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx, 140 void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table 141 142 143 // jump to an invoked target 144 void prepare_to_jump_from_interpreted(); 145 void jump_from_interpreted(Register method, Register temp); 146 147 // Returning from interpreted functions 148 // 149 // Removes the current activation (incl. unlocking of monitors) 150 // and sets up the return address. This code is also used for 151 // exception unwindwing. In that case, we do not want to throw 152 // IllegalMonitorStateExceptions, since that might get us into an 153 // infinite rethrow exception loop. 154 // Additionally this code is used for popFrame and earlyReturn. 155 // In popFrame case we want to skip throwing an exception, 156 // installing an exception, and notifying jvmdi. 157 // In earlyReturn case we only want to skip throwing an exception 158 // and installing an exception. 159 void remove_activation(TosState state, Register ret_addr, 160 bool throw_monitor_exception = true, 161 bool install_monitor_exception = true, 162 bool notify_jvmdi = true); 163 #endif /* !CC_INTERP */ 164 165 // Debugging 166 void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos 167 #ifndef CC_INTERP 168 void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos) 169 170 #endif /* !CC_INTERP */ 171 172 // Object locking 173 void lock_object (Register lock_reg); 174 void unlock_object(Register lock_reg); 175 176 #ifndef CC_INTERP 177 178 // Interpreter profiling operations 179 void set_method_data_pointer_for_bcp(); 180 void test_method_data_pointer(Register mdp, Label& zero_continue); 181 void verify_method_data_pointer(); 182 183 void set_mdp_data_at(Register mdp_in, int constant, Register value); 184 void increment_mdp_data_at(Address data, bool decrement = false); 185 void increment_mdp_data_at(Register mdp_in, int constant, 186 bool decrement = false); 187 void increment_mdp_data_at(Register mdp_in, Register reg, int constant, 188 bool decrement = false); 189 void increment_mask_and_jump(Address counter_addr, 190 int increment, int mask, 191 Register scratch, bool preloaded, 192 Condition cond, Label* where); 193 void set_mdp_flag_at(Register mdp_in, int flag_constant); 194 void test_mdp_data_at(Register mdp_in, int offset, Register value, 195 Register test_value_out, 196 Label& not_equal_continue); 197 198 void record_klass_in_profile(Register receiver, Register mdp, 199 Register reg2, bool is_virtual_call); 200 void record_klass_in_profile_helper(Register receiver, Register mdp, 201 Register reg2, int start_row, 202 Label& done, bool is_virtual_call); 203 204 void update_mdp_by_offset(Register mdp_in, int offset_of_offset); 205 void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); 206 void update_mdp_by_constant(Register mdp_in, int constant); 207 void update_mdp_for_ret(Register return_bci); 208 209 void profile_taken_branch(Register mdp, Register bumped_count); 210 void profile_not_taken_branch(Register mdp); 211 void profile_call(Register mdp); 212 void profile_final_call(Register mdp); 213 void profile_virtual_call(Register receiver, Register mdp, Register scratch2, 214 bool receiver_can_be_null = false); 215 void profile_ret(Register return_bci, Register mdp); 216 void profile_null_seen(Register mdp); 217 void profile_typecheck(Register mdp, Register klass, Register scratch); 218 void profile_typecheck_failed(Register mdp); 219 void profile_switch_default(Register mdp); 220 void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2); 221 222 #endif /* !CC_INTERP */ 223 224 typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; 225 226 // support for jvmti 227 void notify_method_entry(); 228 void notify_method_exit(TosState state, NotifyMethodExitMode mode); 229 230 }; 231 232 #endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP