/* * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef CPU_X86_VM_INTERP_MASM_X86_HPP #define CPU_X86_VM_INTERP_MASM_X86_HPP #include "asm/macroAssembler.hpp" #include "asm/macroAssembler.inline.hpp" #include "interpreter/invocationCounter.hpp" #include "runtime/frame.hpp" // This file specializes the assember with interpreter-specific macros typedef ByteSize (*OffsetFunction)(uint); class InterpreterMacroAssembler: public MacroAssembler { public: // Interpreter specific version of call_VM_base virtual void call_VM_leaf_base(address entry_point, int number_of_arguments); protected: virtual void call_VM_base(Register oop_result, Register java_thread, Register last_java_sp, address entry_point, int number_of_arguments, bool check_exceptions); // base routine for all dispatches void dispatch_base(TosState state, address* table, bool verifyoop = true, bool generate_poll = false); public: InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code), _locals_register(LP64_ONLY(r14) NOT_LP64(rdi)), _bcp_register(LP64_ONLY(r13) NOT_LP64(rsi)) {} void jump_to_entry(address entry); virtual void check_and_handle_popframe(Register java_thread); virtual void check_and_handle_earlyret(Register java_thread); void load_earlyret_value(TosState state); // Interpreter-specific registers void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), _bcp_register); } void restore_bcp() { movptr(_bcp_register, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize)); } void restore_locals() { movptr(_locals_register, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); } // Helpers for runtime call arguments/results void get_method(Register reg) { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); } void get_const(Register reg) { get_method(reg); movptr(reg, Address(reg, Method::const_offset())); } void get_constant_pool(Register reg) { get_const(reg); movptr(reg, Address(reg, ConstMethod::constants_offset())); } void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, ConstantPool::cache_offset_in_bytes())); } void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, ConstantPool::tags_offset_in_bytes())); } void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset); void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2)); 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)); void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2)); void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2)); // load cpool->resolved_references(index); void load_resolved_reference_at_index(Register result, Register index, Register tmp = rscratch2); // load cpool->resolved_klass_at(index) void load_resolved_klass_at_index(Register cpool, // the constant pool (corrupted on return) Register index, // the constant pool index (corrupted on return) Register klass); // contains the Klass on return NOT_LP64(void f2ieee();) // truncate ftos to 32bits NOT_LP64(void d2ieee();) // truncate dtos to 64bits // Expression stack void pop_ptr(Register r = rax); void pop_i(Register r = rax); void push_ptr(Register r = rax); void push_i(Register r = rax); void push_f(XMMRegister r); void pop_f(XMMRegister r); void pop_d(XMMRegister r); void push_d(XMMRegister r); #ifdef _LP64 void pop_l(Register r = rax); void push_l(Register r = rax); #else void pop_l(Register lo = rax, Register hi = rdx); void pop_f(); void pop_d(); void push_l(Register lo = rax, Register hi = rdx); void push_d(); void push_f(); #endif // _LP64 void pop(Register r) { ((MacroAssembler*)this)->pop(r); } void push(Register r) { ((MacroAssembler*)this)->push(r); } void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); } void pop(TosState state); // transition vtos -> state void push(TosState state); // transition state -> vtos // These are dummies to prevent surprise implicit conversions to Register void pop(void* v); // Add unimplemented ambiguous method void push(void* v); // Add unimplemented ambiguous method void empty_expression_stack() { movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize)); // NULL last_sp until next java call movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); NOT_LP64(empty_FPU_stack()); } // Helpers for swap and dup void load_ptr(int n, Register val); void store_ptr(int n, Register val); // Generate a subtype check: branch to ok_is_subtype if sub_klass is // a subtype of super_klass. void gen_subtype_check( Register sub_klass, Label &ok_is_subtype ); // Dispatching void dispatch_prolog(TosState state, int step = 0); void dispatch_epilog(TosState state, int step = 0); // dispatch via rbx (assume rbx is loaded already) void dispatch_only(TosState state, bool generate_poll = false); // dispatch normal table via rbx (assume rbx is loaded already) void dispatch_only_normal(TosState state); void dispatch_only_noverify(TosState state); // load rbx from [_bcp_register + step] and dispatch via rbx void dispatch_next(TosState state, int step = 0, bool generate_poll = false); // load rbx from [_bcp_register] and dispatch via rbx and table void dispatch_via (TosState state, address* table); // jump to an invoked target void prepare_to_jump_from_interpreted(); void jump_from_interpreted(Register method, Register temp); // void resolve_special(Register rmethod, LinkInfo link_info); // void get_entry(Register entry, Register method); // void get_entry(Register entry, LinkInfo link_info); // void call_Java_final(LinkInfo link_info); // void jump_Java_final(LinkInfo link_info); // narrow int return value void narrow(Register result); // Returning from interpreted functions // // Removes the current activation (incl. unlocking of monitors) // and sets up the return address. This code is also used for // exception unwindwing. In that case, we do not want to throw // IllegalMonitorStateExceptions, since that might get us into an // infinite rethrow exception loop. // Additionally this code is used for popFrame and earlyReturn. // In popFrame case we want to skip throwing an exception, // installing an exception, and notifying jvmdi. // In earlyReturn case we only want to skip throwing an exception // and installing an exception. void remove_activation(TosState state, Register ret_addr, bool throw_monitor_exception = true, bool install_monitor_exception = true, bool notify_jvmdi = true); void get_method_counters(Register method, Register mcs, Label& skip); // Object locking void lock_object (Register lock_reg); void unlock_object(Register lock_reg); // Interpreter profiling operations void set_method_data_pointer_for_bcp(); void test_method_data_pointer(Register mdp, Label& zero_continue); void verify_method_data_pointer(); void set_mdp_data_at(Register mdp_in, int constant, Register value); void increment_mdp_data_at(Address data, bool decrement = false); void increment_mdp_data_at(Register mdp_in, int constant, bool decrement = false); void increment_mdp_data_at(Register mdp_in, Register reg, int constant, bool decrement = false); void increment_mask_and_jump(Address counter_addr, int increment, Address mask, Register scratch, bool preloaded, Condition cond, Label* where); void set_mdp_flag_at(Register mdp_in, int flag_constant); void test_mdp_data_at(Register mdp_in, int offset, Register value, Register test_value_out, Label& not_equal_continue); void record_klass_in_profile(Register receiver, Register mdp, Register reg2, bool is_virtual_call); void record_klass_in_profile_helper(Register receiver, Register mdp, Register reg2, int start_row, Label& done, bool is_virtual_call); void record_item_in_profile_helper(Register item, Register mdp, Register reg2, int start_row, Label& done, int total_rows, OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, int non_profiled_offset); void update_mdp_by_offset(Register mdp_in, int offset_of_offset); void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp); void update_mdp_by_constant(Register mdp_in, int constant); void update_mdp_for_ret(Register return_bci); void profile_taken_branch(Register mdp, Register bumped_count); void profile_not_taken_branch(Register mdp); void profile_call(Register mdp); void profile_final_call(Register mdp); void profile_virtual_call(Register receiver, Register mdp, Register scratch2, bool receiver_can_be_null = false); void profile_called_method(Register method, Register mdp, Register reg2) NOT_JVMCI_RETURN; void profile_ret(Register return_bci, Register mdp); void profile_null_seen(Register mdp); void profile_typecheck(Register mdp, Register klass, Register scratch); void profile_typecheck_failed(Register mdp); void profile_switch_default(Register mdp); void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2); // Debugging // only if +VerifyOops && state == atos void verify_oop(Register reg, TosState state = atos); // only if +VerifyFPU && (state == ftos || state == dtos) void verify_FPU(int stack_depth, TosState state = ftos); typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; // support for jvmti/dtrace void notify_method_entry(); void notify_method_exit(TosState state, NotifyMethodExitMode mode); private: Register _locals_register; // register that contains the pointer to the locals Register _bcp_register; // register that contains the bcp public: void profile_obj_type(Register obj, const Address& mdo_addr); void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual); void profile_return_type(Register mdp, Register ret, Register tmp); void profile_parameters_type(Register mdp, Register tmp1, Register tmp2); }; #endif // CPU_X86_VM_INTERP_MASM_X86_HPP