/* * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // This file specializes the assember with interpreter-specific macros class InterpreterMacroAssembler: public MacroAssembler { #ifndef CC_INTERP protected: // Interpreter specific version of call_VM_base virtual void call_VM_leaf_base( address entry_point, int number_of_arguments ); 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 ); virtual void check_and_handle_popframe(Register java_thread); virtual void check_and_handle_earlyret(Register java_thread); // base routine for all dispatches void dispatch_base(TosState state, address* table, bool verifyoop = true); #endif /* CC_INTERP */ public: InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {} void load_earlyret_value(TosState state); // Interpreter-specific registers #ifdef CC_INTERP void save_bcp() { /* not needed in c++ interpreter and harmless */ } void restore_bcp() { /* not needed in c++ interpreter and harmless */ } // Helpers for runtime call arguments/results void get_method(Register reg); #else void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); } void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); } void restore_locals() { movptr(rdi, 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_constant_pool(Register reg) { get_method(reg); movptr(reg, Address(reg, methodOopDesc::constants_offset())); } void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); } void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::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); void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset); // Expression stack void f2ieee(); // truncate ftos to 32bits void d2ieee(); // truncate dtos to 64bits void pop_ptr(Register r = rax); void pop_ptr(Register r, Register tag); void pop_i(Register r = rax); void pop_l(Register lo = rax, Register hi = rdx); void pop_f(); void pop_d(); void pop_ftos_to_rsp(); void pop_dtos_to_rsp(); void push_ptr(Register r = rax); void push_ptr(Register r, Register tag); void push_i(Register r = rax); void push_l(Register lo = rax, Register hi = rdx); void push_d(Register r = rax); void push_f(); void pop(TosState state); // transition vtos -> state void push(TosState state); // transition state -> vtos 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); } // 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 DEBUG_ONLY(void verify_stack_tag(frame::Tag t);) #endif // CC_INTERP #ifndef CC_INTERP 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); } // Tagged stack helpers for swap and dup void load_ptr_and_tag(int n, Register val, Register tag); void store_ptr_and_tag(int n, Register val, Register tag); // Tagged Local support void tag_local(frame::Tag tag, int n); void tag_local(Register tag, int n); void tag_local(frame::Tag tag, Register idx); void tag_local(Register tag, Register idx); #ifdef ASSERT void verify_local_tag(frame::Tag tag, int n); void verify_local_tag(frame::Tag tag, Register idx); #endif // ASSERT // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls void super_call_VM_leaf(address entry_point); void super_call_VM_leaf(address entry_point, Register arg_1); void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2); void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3); // Generate a subtype check: branch to ok_is_subtype if sub_klass is // a subtype of super_klass. EAX holds the super_klass. Blows ECX // and EDI. Register sub_klass cannot be any of the above. 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); void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already) void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already) void dispatch_only_noverify(TosState state); void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx, void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table // jump to an invoked target void jump_from_interpreted(Register method, Register temp); // 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); #endif /* !CC_INTERP */ // Debugging void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos #ifndef CC_INTERP void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos) #endif /* !CC_INTERP */ // Object locking void lock_object (Register lock_reg); void unlock_object(Register lock_reg); #ifndef CC_INTERP // 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 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); void record_klass_in_profile_helper(Register receiver, Register mdp, Register reg2, int start_row, Label& done); 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); 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); #endif /* !CC_INTERP */ typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode; // support for jvmti void notify_method_entry(); void notify_method_exit(TosState state, NotifyMethodExitMode mode); };