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src/share/vm/interpreter/abstractInterpreter.hpp@f90c822e73f8 (annotated)

src/share/vm/interpreter/abstractInterpreter.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 1

2d8a650513c2

permissions

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
aoqi@0	26	#define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
aoqi@0	27
aoqi@0	28	#include "code/stubs.hpp"
aoqi@0	29	#include "interpreter/bytecodes.hpp"
aoqi@0	30	#include "runtime/thread.inline.hpp"
aoqi@0	31	#include "runtime/vmThread.hpp"
aoqi@0	32	#include "utilities/top.hpp"
aoqi@0	33	#ifdef TARGET_ARCH_x86
aoqi@0	34	# include "interp_masm_x86.hpp"
aoqi@0	35	#endif
aoqi@0	36	#ifdef TARGET_ARCH_MODEL_sparc
aoqi@0	37	# include "interp_masm_sparc.hpp"
aoqi@0	38	#endif
aoqi@0	39	#ifdef TARGET_ARCH_MODEL_zero
aoqi@0	40	# include "interp_masm_zero.hpp"
aoqi@0	41	#endif
aoqi@0	42	#ifdef TARGET_ARCH_MODEL_arm
aoqi@0	43	# include "interp_masm_arm.hpp"
aoqi@0	44	#endif
aoqi@0	45	#ifdef TARGET_ARCH_MODEL_ppc_32
aoqi@0	46	# include "interp_masm_ppc_32.hpp"
aoqi@0	47	#endif
aoqi@0	48	#ifdef TARGET_ARCH_MODEL_ppc_64
aoqi@0	49	# include "interp_masm_ppc_64.hpp"
aoqi@0	50	#endif
aoqi@0	51
aoqi@0	52	// This file contains the platform-independent parts
aoqi@0	53	// of the abstract interpreter and the abstract interpreter generator.
aoqi@0	54
aoqi@0	55	// Organization of the interpreter(s). There exists two different interpreters in hotpot
aoqi@0	56	// an assembly language version (aka template interpreter) and a high level language version
aoqi@0	57	// (aka c++ interpreter). Th division of labor is as follows:
aoqi@0	58
aoqi@0	59	// Template Interpreter C++ Interpreter Functionality
aoqi@0	60	//
aoqi@0	61	// templateTable* bytecodeInterpreter* actual interpretation of bytecodes
aoqi@0	62	//
aoqi@0	63	// templateInterpreter* cppInterpreter* generation of assembly code that creates
aoqi@0	64	// and manages interpreter runtime frames.
aoqi@0	65	// Also code for populating interpreter
aoqi@0	66	// frames created during deoptimization.
aoqi@0	67	//
aoqi@0	68	// For both template and c++ interpreter. There are common files for aspects of the interpreter
aoqi@0	69	// that are generic to both interpreters. This is the layout:
aoqi@0	70	//
aoqi@0	71	// abstractInterpreter.hpp: generic description of the interpreter.
aoqi@0	72	// interpreter*: generic frame creation and handling.
aoqi@0	73	//
aoqi@0	74
aoqi@0	75	//------------------------------------------------------------------------------------------------------------------------
aoqi@0	76	// The C++ interface to the bytecode interpreter(s).
aoqi@0	77
aoqi@0	78	class AbstractInterpreter: AllStatic {
aoqi@0	79	friend class VMStructs;
aoqi@0	80	friend class Interpreter;
aoqi@0	81	friend class CppInterpreterGenerator;
aoqi@0	82	public:
aoqi@0	83	enum MethodKind {
aoqi@0	84	zerolocals, // method needs locals initialization
aoqi@0	85	zerolocals_synchronized, // method needs locals initialization & is synchronized
aoqi@0	86	native, // native method
aoqi@0	87	native_synchronized, // native method & is synchronized
aoqi@0	88	empty, // empty method (code: _return)
aoqi@0	89	accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
aoqi@0	90	abstract, // abstract method (throws an AbstractMethodException)
aoqi@0	91	method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
aoqi@0	92	method_handle_invoke_LAST = (method_handle_invoke_FIRST
aoqi@0	93	+ (vmIntrinsics::LAST_MH_SIG_POLY
aoqi@0	94	- vmIntrinsics::FIRST_MH_SIG_POLY)),
aoqi@0	95	java_lang_math_sin, // implementation of java.lang.Math.sin (x)
aoqi@0	96	java_lang_math_cos, // implementation of java.lang.Math.cos (x)
aoqi@0	97	java_lang_math_tan, // implementation of java.lang.Math.tan (x)
aoqi@0	98	java_lang_math_abs, // implementation of java.lang.Math.abs (x)
aoqi@0	99	java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
aoqi@0	100	java_lang_math_log, // implementation of java.lang.Math.log (x)
aoqi@0	101	java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
aoqi@0	102	java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
aoqi@0	103	java_lang_math_exp, // implementation of java.lang.Math.exp (x)
aoqi@0	104	java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
aoqi@0	105	java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
aoqi@0	106	java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
aoqi@0	107	java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
aoqi@0	108	number_of_method_entries,
aoqi@0	109	invalid = -1
aoqi@0	110	};
aoqi@0	111
aoqi@0	112	// Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
aoqi@0	113	static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
aoqi@0	114	if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
aoqi@0	115	return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
aoqi@0	116	else
aoqi@0	117	return vmIntrinsics::_none;
aoqi@0	118	}
aoqi@0	119
aoqi@0	120	enum SomeConstants {
aoqi@0	121	number_of_result_handlers = 10 // number of result handlers for native calls
aoqi@0	122	};
aoqi@0	123
aoqi@0	124	protected:
aoqi@0	125	static StubQueue* _code; // the interpreter code (codelets)
aoqi@0	126
aoqi@0	127	static bool _notice_safepoints; // true if safepoints are activated
aoqi@0	128
aoqi@0	129	static address _native_entry_begin; // Region for native entry code
aoqi@0	130	static address _native_entry_end;
aoqi@0	131
aoqi@0	132	// method entry points
aoqi@0	133	static address _entry_table[number_of_method_entries]; // entry points for a given method
aoqi@0	134	static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
aoqi@0	135	static address _slow_signature_handler; // the native method generic (slow) signature handler
aoqi@0	136
aoqi@0	137	static address _rethrow_exception_entry; // rethrows an activation in previous frame
aoqi@0	138
aoqi@0	139	friend class AbstractInterpreterGenerator;
aoqi@0	140	friend class InterpreterGenerator;
aoqi@0	141	friend class InterpreterMacroAssembler;
aoqi@0	142
aoqi@0	143	public:
aoqi@0	144	// Initialization/debugging
aoqi@0	145	static void initialize();
aoqi@0	146	static StubQueue* code() { return _code; }
aoqi@0	147
aoqi@0	148
aoqi@0	149	// Method activation
aoqi@0	150	static MethodKind method_kind(methodHandle m);
aoqi@0	151	static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
aoqi@0	152	static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
aoqi@0	153
aoqi@0	154	// used for bootstrapping method handles:
aoqi@0	155	static void set_entry_for_kind(MethodKind k, address e);
aoqi@0	156
aoqi@0	157	static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
aoqi@0	158
aoqi@0	159	static bool can_be_compiled(methodHandle m);
aoqi@0	160
aoqi@0	161	// Runtime support
aoqi@0	162
aoqi@0	163	// length = invoke bytecode length (to advance to next bytecode)
aoqi@0	164	static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
aoqi@0	165	static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
aoqi@0	166
aoqi@0	167	static address rethrow_exception_entry() { return _rethrow_exception_entry; }
aoqi@0	168
aoqi@0	169	// Activation size in words for a method that is just being called.
aoqi@0	170	// Parameters haven't been pushed so count them too.
aoqi@0	171	static int size_top_interpreter_activation(Method* method);
aoqi@0	172
aoqi@0	173	// Deoptimization support
aoqi@0	174	// Compute the entry address for continuation after
aoqi@0	175	static address deopt_continue_after_entry(Method* method,
aoqi@0	176	address bcp,
aoqi@0	177	int callee_parameters,
aoqi@0	178	bool is_top_frame);
aoqi@0	179	// Compute the entry address for reexecution
aoqi@0	180	static address deopt_reexecute_entry(Method* method, address bcp);
aoqi@0	181	// Deoptimization should reexecute this bytecode
aoqi@0	182	static bool bytecode_should_reexecute(Bytecodes::Code code);
aoqi@0	183
aoqi@0	184	// deoptimization support
aoqi@0	185	static int size_activation(int max_stack,
aoqi@0	186	int temps,
aoqi@0	187	int extra_args,
aoqi@0	188	int monitors,
aoqi@0	189	int callee_params,
aoqi@0	190	int callee_locals,
aoqi@0	191	bool is_top_frame);
aoqi@0	192
aoqi@0	193	static void layout_activation(Method* method,
aoqi@0	194	int temps,
aoqi@0	195	int popframe_args,
aoqi@0	196	int monitors,
aoqi@0	197	int caller_actual_parameters,
aoqi@0	198	int callee_params,
aoqi@0	199	int callee_locals,
aoqi@0	200	frame* caller,
aoqi@0	201	frame* interpreter_frame,
aoqi@0	202	bool is_top_frame,
aoqi@0	203	bool is_bottom_frame);
aoqi@0	204
aoqi@0	205	// Runtime support
aoqi@0	206	static bool is_not_reached( methodHandle method, int bci);
aoqi@0	207	// Safepoint support
aoqi@0	208	static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
aoqi@0	209	static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
aoqi@0	210
aoqi@0	211	// Support for native calls
aoqi@0	212	static address slow_signature_handler() { return _slow_signature_handler; }
aoqi@0	213	static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
aoqi@0	214	static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
aoqi@0	215	static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
aoqi@0	216	// Debugging/printing
aoqi@0	217	static void print(); // prints the interpreter code
aoqi@0	218
aoqi@0	219	public:
aoqi@0	220	// Interpreter helpers
aoqi@0	221	const static int stackElementWords = 1;
aoqi@0	222	const static int stackElementSize = stackElementWords * wordSize;
aoqi@0	223	const static int logStackElementSize = LogBytesPerWord;
aoqi@0	224
aoqi@0	225	// Local values relative to locals[n]
aoqi@0	226	static int local_offset_in_bytes(int n) {
aoqi@0	227	return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
aoqi@0	228	}
aoqi@0	229
aoqi@0	230	// access to stacked values according to type:
aoqi@0	231	static oop* oop_addr_in_slot(intptr_t* slot_addr) {
aoqi@0	232	return (oop*) slot_addr;
aoqi@0	233	}
aoqi@0	234	static jint* int_addr_in_slot(intptr_t* slot_addr) {
aoqi@0	235	if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
aoqi@0	236	// big-endian LP64
aoqi@0	237	return (jint*)(slot_addr + 1) - 1;
aoqi@0	238	else
aoqi@0	239	return (jint*) slot_addr;
aoqi@0	240	}
aoqi@0	241	static jlong long_in_slot(intptr_t* slot_addr) {
aoqi@0	242	if (sizeof(intptr_t) >= sizeof(jlong)) {
aoqi@0	243	return *(jlong*) slot_addr;
aoqi@0	244	} else {
aoqi@0	245	return Bytes::get_native_u8((address)slot_addr);
aoqi@0	246	}
aoqi@0	247	}
aoqi@0	248	static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
aoqi@0	249	if (sizeof(intptr_t) >= sizeof(jlong)) {
aoqi@0	250	*(jlong*) slot_addr = value;
aoqi@0	251	} else {
aoqi@0	252	Bytes::put_native_u8((address)slot_addr, value);
aoqi@0	253	}
aoqi@0	254	}
aoqi@0	255	static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
aoqi@0	256	switch (type) {
aoqi@0	257	case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
aoqi@0	258	case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
aoqi@0	259	case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
aoqi@0	260	case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
aoqi@0	261	case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
aoqi@0	262	case T_LONG: value->j = long_in_slot(slot_addr); break;
aoqi@0	263	case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
aoqi@0	264	case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
aoqi@0	265	case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
aoqi@0	266	default: ShouldNotReachHere();
aoqi@0	267	}
aoqi@0	268	}
aoqi@0	269	static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
aoqi@0	270	switch (type) {
aoqi@0	271	case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
aoqi@0	272	case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
aoqi@0	273	case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
aoqi@0	274	case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
aoqi@0	275	case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
aoqi@0	276	case T_LONG: set_long_in_slot(slot_addr, value->j); break;
aoqi@0	277	case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
aoqi@0	278	case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
aoqi@0	279	case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
aoqi@0	280	default: ShouldNotReachHere();
aoqi@0	281	}
aoqi@0	282	}
aoqi@0	283	};
aoqi@0	284
aoqi@0	285	//------------------------------------------------------------------------------------------------------------------------
aoqi@0	286	// The interpreter generator.
aoqi@0	287
aoqi@0	288	class Template;
aoqi@0	289	class AbstractInterpreterGenerator: public StackObj {
aoqi@0	290	protected:
aoqi@0	291	InterpreterMacroAssembler* _masm;
aoqi@0	292
aoqi@0	293	// shared code sequences
aoqi@0	294	// Converter for native abi result to tosca result
aoqi@0	295	address generate_result_handler_for(BasicType type);
aoqi@0	296	address generate_slow_signature_handler();
aoqi@0	297
aoqi@0	298	// entry point generator
aoqi@0	299	address generate_method_entry(AbstractInterpreter::MethodKind kind);
aoqi@0	300
aoqi@0	301	void bang_stack_shadow_pages(bool native_call);
aoqi@0	302
aoqi@0	303	void generate_all();
aoqi@0	304	void initialize_method_handle_entries();
aoqi@0	305
aoqi@0	306	public:
aoqi@0	307	AbstractInterpreterGenerator(StubQueue* _code);
aoqi@0	308	};
aoqi@0	309
aoqi@0	310	#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP