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src/cpu/x86/vm/interp_masm_x86_32.hpp@2fe087c3e814 (annotated)

src/cpu/x86/vm/interp_masm_x86_32.hpp

Wed, 06 Jun 2012 14:33:43 -0400

author

jiangli

date

Wed, 06 Jun 2012 14:33:43 -0400

changeset 3826

2fe087c3e814

parent 3050

fdb992d83a87

child 4037

da91efe96a93

permissions

-rw-r--r--

7172967: Eliminate constMethod's _method backpointer to methodOop.
Summary: Eliminate constMethod's _method backpointer to methodOop, and move the _constant field from methodOop to constMethod.
Reviewed-by: roland, bdelsart, kamg

duke@435	1	/*
jiangli@3826	2	* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef CPU_X86_VM_INTERP_MASM_X86_32_HPP
stefank@2314	26	#define CPU_X86_VM_INTERP_MASM_X86_32_HPP
stefank@2314	27
stefank@2314	28	#include "assembler_x86.inline.hpp"
stefank@2314	29	#include "interpreter/invocationCounter.hpp"
stefank@2314	30
duke@435	31	// This file specializes the assember with interpreter-specific macros
duke@435	32
duke@435	33
duke@435	34	class InterpreterMacroAssembler: public MacroAssembler {
duke@435	35	#ifndef CC_INTERP
duke@435	36	protected:
duke@435	37	// Interpreter specific version of call_VM_base
duke@435	38	virtual void call_VM_leaf_base(
duke@435	39	address entry_point,
duke@435	40	int number_of_arguments
duke@435	41	);
duke@435	42
duke@435	43	virtual void call_VM_base(
duke@435	44	Register oop_result,
duke@435	45	Register java_thread,
duke@435	46	Register last_java_sp,
duke@435	47	address entry_point,
duke@435	48	int number_of_arguments,
duke@435	49	bool check_exceptions
duke@435	50	);
duke@435	51
duke@435	52	virtual void check_and_handle_popframe(Register java_thread);
duke@435	53	virtual void check_and_handle_earlyret(Register java_thread);
duke@435	54
duke@435	55	// base routine for all dispatches
duke@435	56	void dispatch_base(TosState state, address* table, bool verifyoop = true);
duke@435	57	#endif /* CC_INTERP */
duke@435	58
duke@435	59	public:
duke@435	60	InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
duke@435	61
duke@435	62	void load_earlyret_value(TosState state);
duke@435	63
duke@435	64	// Interpreter-specific registers
duke@435	65	#ifdef CC_INTERP
duke@435	66	void save_bcp() { /* not needed in c++ interpreter and harmless */ }
duke@435	67	void restore_bcp() { /* not needed in c++ interpreter and harmless */ }
duke@435	68
duke@435	69	// Helpers for runtime call arguments/results
duke@435	70	void get_method(Register reg);
duke@435	71
duke@435	72	#else
duke@435	73
never@739	74	void save_bcp() { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
never@739	75	void restore_bcp() { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
never@739	76	void restore_locals() { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
duke@435	77
duke@435	78	// Helpers for runtime call arguments/results
never@739	79	void get_method(Register reg) { movptr(reg, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); }
jiangli@3826	80	void get_const(Register reg) { get_method(reg); movptr(reg, Address(reg, methodOopDesc::const_offset())); }
jiangli@3826	81	void get_constant_pool(Register reg) { get_const(reg); movptr(reg, Address(reg, constMethodOopDesc::constants_offset())); }
never@739	82	void get_constant_pool_cache(Register reg) { get_constant_pool(reg); movptr(reg, Address(reg, constantPoolOopDesc::cache_offset_in_bytes())); }
never@739	83	void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
duke@435	84	}
duke@435	85	void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
jrose@1920	86	void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
twisti@3050	87	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));
jrose@1920	88	void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
jrose@1920	89	void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
duke@435	90
duke@435	91	// Expression stack
duke@435	92	void f2ieee(); // truncate ftos to 32bits
duke@435	93	void d2ieee(); // truncate dtos to 64bits
duke@435	94
duke@435	95	void pop_ptr(Register r = rax);
duke@435	96	void pop_i(Register r = rax);
duke@435	97	void pop_l(Register lo = rax, Register hi = rdx);
duke@435	98	void pop_f();
duke@435	99	void pop_d();
duke@435	100
duke@435	101	void push_ptr(Register r = rax);
duke@435	102	void push_i(Register r = rax);
duke@435	103	void push_l(Register lo = rax, Register hi = rdx);
duke@435	104	void push_d(Register r = rax);
duke@435	105	void push_f();
duke@435	106
duke@435	107	void pop(TosState state); // transition vtos -> state
duke@435	108	void push(TosState state); // transition state -> vtos
duke@435	109
never@739	110	void pop(Register r ) { ((MacroAssembler*)this)->pop(r); }
never@739	111
never@739	112	void push(Register r ) { ((MacroAssembler*)this)->push(r); }
never@739	113	void push(int32_t imm ) { ((MacroAssembler*)this)->push(imm); }
never@739	114
never@739	115	// These are dummies to prevent surprise implicit conversions to Register
never@739	116	void pop(void* v ); // Add unimplemented ambiguous method
never@739	117	void push(void* v ); // Add unimplemented ambiguous method
never@739	118
twisti@1861	119	void empty_expression_stack() {
twisti@1861	120	movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
twisti@1861	121	// NULL last_sp until next java call
twisti@1861	122	movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
duke@435	123	}
duke@435	124
twisti@1861	125	// Helpers for swap and dup
twisti@1861	126	void load_ptr(int n, Register val);
twisti@1861	127	void store_ptr(int n, Register val);
duke@435	128
duke@435	129	// Generate a subtype check: branch to ok_is_subtype if sub_klass is
duke@435	130	// a subtype of super_klass. EAX holds the super_klass. Blows ECX
duke@435	131	// and EDI. Register sub_klass cannot be any of the above.
duke@435	132	void gen_subtype_check( Register sub_klass, Label &ok_is_subtype );
duke@435	133
duke@435	134	// Dispatching
duke@435	135	void dispatch_prolog(TosState state, int step = 0);
duke@435	136	void dispatch_epilog(TosState state, int step = 0);
duke@435	137	void dispatch_only(TosState state); // dispatch via rbx, (assume rbx, is loaded already)
duke@435	138	void dispatch_only_normal(TosState state); // dispatch normal table via rbx, (assume rbx, is loaded already)
duke@435	139	void dispatch_only_noverify(TosState state);
duke@435	140	void dispatch_next(TosState state, int step = 0); // load rbx, from [esi + step] and dispatch via rbx,
duke@435	141	void dispatch_via (TosState state, address* table); // load rbx, from [esi] and dispatch via rbx, and table
duke@435	142
duke@435	143
duke@435	144	// jump to an invoked target
jrose@1145	145	void prepare_to_jump_from_interpreted();
duke@435	146	void jump_from_interpreted(Register method, Register temp);
duke@435	147
duke@435	148	// Returning from interpreted functions
duke@435	149	//
duke@435	150	// Removes the current activation (incl. unlocking of monitors)
duke@435	151	// and sets up the return address. This code is also used for
duke@435	152	// exception unwindwing. In that case, we do not want to throw
duke@435	153	// IllegalMonitorStateExceptions, since that might get us into an
duke@435	154	// infinite rethrow exception loop.
duke@435	155	// Additionally this code is used for popFrame and earlyReturn.
duke@435	156	// In popFrame case we want to skip throwing an exception,
duke@435	157	// installing an exception, and notifying jvmdi.
duke@435	158	// In earlyReturn case we only want to skip throwing an exception
duke@435	159	// and installing an exception.
duke@435	160	void remove_activation(TosState state, Register ret_addr,
duke@435	161	bool throw_monitor_exception = true,
duke@435	162	bool install_monitor_exception = true,
duke@435	163	bool notify_jvmdi = true);
duke@435	164	#endif /* !CC_INTERP */
duke@435	165
duke@435	166	// Debugging
duke@435	167	void verify_oop(Register reg, TosState state = atos); // only if +VerifyOops && state == atos
duke@435	168	#ifndef CC_INTERP
duke@435	169	void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
duke@435	170
duke@435	171	#endif /* !CC_INTERP */
duke@435	172
duke@435	173	// Object locking
duke@435	174	void lock_object (Register lock_reg);
duke@435	175	void unlock_object(Register lock_reg);
duke@435	176
duke@435	177	#ifndef CC_INTERP
duke@435	178
duke@435	179	// Interpreter profiling operations
duke@435	180	void set_method_data_pointer_for_bcp();
duke@435	181	void test_method_data_pointer(Register mdp, Label& zero_continue);
duke@435	182	void verify_method_data_pointer();
duke@435	183
duke@435	184	void set_mdp_data_at(Register mdp_in, int constant, Register value);
duke@435	185	void increment_mdp_data_at(Address data, bool decrement = false);
duke@435	186	void increment_mdp_data_at(Register mdp_in, int constant,
duke@435	187	bool decrement = false);
duke@435	188	void increment_mdp_data_at(Register mdp_in, Register reg, int constant,
duke@435	189	bool decrement = false);
iveresov@2138	190	void increment_mask_and_jump(Address counter_addr,
iveresov@2138	191	int increment, int mask,
iveresov@2138	192	Register scratch, bool preloaded,
iveresov@2138	193	Condition cond, Label* where);
duke@435	194	void set_mdp_flag_at(Register mdp_in, int flag_constant);
duke@435	195	void test_mdp_data_at(Register mdp_in, int offset, Register value,
duke@435	196	Register test_value_out,
duke@435	197	Label& not_equal_continue);
duke@435	198
duke@435	199	void record_klass_in_profile(Register receiver, Register mdp,
kvn@1641	200	Register reg2, bool is_virtual_call);
duke@435	201	void record_klass_in_profile_helper(Register receiver, Register mdp,
kvn@1641	202	Register reg2, int start_row,
kvn@1641	203	Label& done, bool is_virtual_call);
duke@435	204
duke@435	205	void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
duke@435	206	void update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp);
duke@435	207	void update_mdp_by_constant(Register mdp_in, int constant);
duke@435	208	void update_mdp_for_ret(Register return_bci);
duke@435	209
duke@435	210	void profile_taken_branch(Register mdp, Register bumped_count);
duke@435	211	void profile_not_taken_branch(Register mdp);
duke@435	212	void profile_call(Register mdp);
duke@435	213	void profile_final_call(Register mdp);
jrose@1161	214	void profile_virtual_call(Register receiver, Register mdp, Register scratch2,
jrose@1161	215	bool receiver_can_be_null = false);
duke@435	216	void profile_ret(Register return_bci, Register mdp);
duke@435	217	void profile_null_seen(Register mdp);
duke@435	218	void profile_typecheck(Register mdp, Register klass, Register scratch);
duke@435	219	void profile_typecheck_failed(Register mdp);
duke@435	220	void profile_switch_default(Register mdp);
duke@435	221	void profile_switch_case(Register index_in_scratch, Register mdp, Register scratch2);
duke@435	222
duke@435	223	#endif /* !CC_INTERP */
duke@435	224
duke@435	225	typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
duke@435	226
duke@435	227	// support for jvmti
duke@435	228	void notify_method_entry();
duke@435	229	void notify_method_exit(TosState state, NotifyMethodExitMode mode);
duke@435	230
duke@435	231	};
stefank@2314	232
stefank@2314	233	#endif // CPU_X86_VM_INTERP_MASM_X86_32_HPP