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src/share/vm/interpreter/abstractInterpreter.hpp@ddce0b7cee93 (annotated)

src/share/vm/interpreter/abstractInterpreter.hpp

Tue, 24 Feb 2015 15:04:52 -0500

author

dlong

date

Tue, 24 Feb 2015 15:04:52 -0500

changeset 7598

ddce0b7cee93

parent 6723

0bf37f737702

child 7994

04ff2f6cd0eb

permissions

-rw-r--r--

8072383: resolve conflicts between open and closed ports
Summary: refactor close to remove references to closed ports
Reviewed-by: kvn, simonis, sgehwolf, dholmes

duke@435	1	/*
dlong@7598	2	* Copyright (c) 1997, 2015, 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 SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
stefank@2314	26	#define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
stefank@2314	27
stefank@2314	28	#include "code/stubs.hpp"
stefank@2314	29	#include "interpreter/bytecodes.hpp"
stefank@4299	30	#include "runtime/thread.inline.hpp"
stefank@2314	31	#include "runtime/vmThread.hpp"
stefank@2314	32	#include "utilities/top.hpp"
dlong@7598	33	#if defined INTERP_MASM_MD_HPP
dlong@7598	34	# include INTERP_MASM_MD_HPP
dlong@7598	35	#elif defined TARGET_ARCH_x86
roland@5987	36	# include "interp_masm_x86.hpp"
dlong@7598	37	#elif defined TARGET_ARCH_MODEL_sparc
stefank@2314	38	# include "interp_masm_sparc.hpp"
dlong@7598	39	#elif defined TARGET_ARCH_MODEL_zero
stefank@2314	40	# include "interp_masm_zero.hpp"
dlong@7598	41	#elif defined TARGET_ARCH_MODEL_ppc_64
goetz@6441	42	# include "interp_masm_ppc_64.hpp"
bobv@2508	43	#endif
stefank@2314	44
twisti@1040	45	// This file contains the platform-independent parts
duke@435	46	// of the abstract interpreter and the abstract interpreter generator.
duke@435	47
duke@435	48	// Organization of the interpreter(s). There exists two different interpreters in hotpot
duke@435	49	// an assembly language version (aka template interpreter) and a high level language version
duke@435	50	// (aka c++ interpreter). Th division of labor is as follows:
duke@435	51
duke@435	52	// Template Interpreter C++ Interpreter Functionality
duke@435	53	//
duke@435	54	// templateTable* bytecodeInterpreter* actual interpretation of bytecodes
duke@435	55	//
duke@435	56	// templateInterpreter* cppInterpreter* generation of assembly code that creates
duke@435	57	// and manages interpreter runtime frames.
duke@435	58	// Also code for populating interpreter
duke@435	59	// frames created during deoptimization.
duke@435	60	//
duke@435	61	// For both template and c++ interpreter. There are common files for aspects of the interpreter
duke@435	62	// that are generic to both interpreters. This is the layout:
duke@435	63	//
duke@435	64	// abstractInterpreter.hpp: generic description of the interpreter.
duke@435	65	// interpreter*: generic frame creation and handling.
duke@435	66	//
duke@435	67
duke@435	68	//------------------------------------------------------------------------------------------------------------------------
duke@435	69	// The C++ interface to the bytecode interpreter(s).
duke@435	70
duke@435	71	class AbstractInterpreter: AllStatic {
duke@435	72	friend class VMStructs;
duke@435	73	friend class Interpreter;
duke@435	74	friend class CppInterpreterGenerator;
duke@435	75	public:
duke@435	76	enum MethodKind {
duke@435	77	zerolocals, // method needs locals initialization
duke@435	78	zerolocals_synchronized, // method needs locals initialization & is synchronized
duke@435	79	native, // native method
duke@435	80	native_synchronized, // native method & is synchronized
duke@435	81	empty, // empty method (code: _return)
duke@435	82	accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
duke@435	83	abstract, // abstract method (throws an AbstractMethodException)
twisti@3969	84	method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
twisti@3969	85	method_handle_invoke_LAST = (method_handle_invoke_FIRST
twisti@3969	86	+ (vmIntrinsics::LAST_MH_SIG_POLY
twisti@3969	87	- vmIntrinsics::FIRST_MH_SIG_POLY)),
duke@435	88	java_lang_math_sin, // implementation of java.lang.Math.sin (x)
duke@435	89	java_lang_math_cos, // implementation of java.lang.Math.cos (x)
duke@435	90	java_lang_math_tan, // implementation of java.lang.Math.tan (x)
duke@435	91	java_lang_math_abs, // implementation of java.lang.Math.abs (x)
duke@435	92	java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
duke@435	93	java_lang_math_log, // implementation of java.lang.Math.log (x)
duke@435	94	java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
roland@3787	95	java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
roland@3787	96	java_lang_math_exp, // implementation of java.lang.Math.exp (x)
johnc@2781	97	java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
drchase@5353	98	java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
drchase@5353	99	java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
drchase@5353	100	java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
duke@435	101	number_of_method_entries,
duke@435	102	invalid = -1
duke@435	103	};
duke@435	104
twisti@3969	105	// Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
twisti@3969	106	static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
twisti@3969	107	if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
twisti@3969	108	return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
twisti@3969	109	else
twisti@3969	110	return vmIntrinsics::_none;
twisti@3969	111	}
twisti@3969	112
duke@435	113	enum SomeConstants {
duke@435	114	number_of_result_handlers = 10 // number of result handlers for native calls
duke@435	115	};
duke@435	116
duke@435	117	protected:
duke@435	118	static StubQueue* _code; // the interpreter code (codelets)
duke@435	119
duke@435	120	static bool _notice_safepoints; // true if safepoints are activated
duke@435	121
duke@435	122	static address _native_entry_begin; // Region for native entry code
duke@435	123	static address _native_entry_end;
duke@435	124
duke@435	125	// method entry points
duke@435	126	static address _entry_table[number_of_method_entries]; // entry points for a given method
duke@435	127	static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
duke@435	128	static address _slow_signature_handler; // the native method generic (slow) signature handler
duke@435	129
duke@435	130	static address _rethrow_exception_entry; // rethrows an activation in previous frame
duke@435	131
duke@435	132	friend class AbstractInterpreterGenerator;
duke@435	133	friend class InterpreterGenerator;
duke@435	134	friend class InterpreterMacroAssembler;
duke@435	135
duke@435	136	public:
duke@435	137	// Initialization/debugging
duke@435	138	static void initialize();
duke@435	139	static StubQueue* code() { return _code; }
duke@435	140
duke@435	141
duke@435	142	// Method activation
duke@435	143	static MethodKind method_kind(methodHandle m);
duke@435	144	static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
johnc@2781	145	static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
duke@435	146
twisti@3969	147	// used for bootstrapping method handles:
twisti@3969	148	static void set_entry_for_kind(MethodKind k, address e);
twisti@3969	149
duke@435	150	static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
duke@435	151
never@1609	152	static bool can_be_compiled(methodHandle m);
never@1609	153
duke@435	154	// Runtime support
duke@435	155
duke@435	156	// length = invoke bytecode length (to advance to next bytecode)
twisti@6039	157	static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
twisti@6039	158	static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
duke@435	159
duke@435	160	static address rethrow_exception_entry() { return _rethrow_exception_entry; }
duke@435	161
duke@435	162	// Activation size in words for a method that is just being called.
duke@435	163	// Parameters haven't been pushed so count them too.
coleenp@4037	164	static int size_top_interpreter_activation(Method* method);
duke@435	165
duke@435	166	// Deoptimization support
cfang@1335	167	// Compute the entry address for continuation after
coleenp@4037	168	static address deopt_continue_after_entry(Method* method,
cfang@1335	169	address bcp,
cfang@1335	170	int callee_parameters,
cfang@1335	171	bool is_top_frame);
cfang@1335	172	// Compute the entry address for reexecution
coleenp@4037	173	static address deopt_reexecute_entry(Method* method, address bcp);
cfang@1335	174	// Deoptimization should reexecute this bytecode
cfang@1335	175	static bool bytecode_should_reexecute(Bytecodes::Code code);
duke@435	176
roland@6723	177	// deoptimization support
roland@6723	178	static int size_activation(int max_stack,
duke@435	179	int temps,
roland@6723	180	int extra_args,
duke@435	181	int monitors,
duke@435	182	int callee_params,
duke@435	183	int callee_locals,
roland@6723	184	bool is_top_frame);
duke@435	185
roland@6723	186	static void layout_activation(Method* method,
never@2901	187	int temps,
never@2901	188	int popframe_args,
never@2901	189	int monitors,
never@2901	190	int caller_actual_parameters,
never@2901	191	int callee_params,
never@2901	192	int callee_locals,
never@2901	193	frame* caller,
never@2901	194	frame* interpreter_frame,
roland@4727	195	bool is_top_frame,
roland@4727	196	bool is_bottom_frame);
duke@435	197
duke@435	198	// Runtime support
duke@435	199	static bool is_not_reached( methodHandle method, int bci);
duke@435	200	// Safepoint support
duke@435	201	static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
duke@435	202	static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
duke@435	203
duke@435	204	// Support for native calls
duke@435	205	static address slow_signature_handler() { return _slow_signature_handler; }
duke@435	206	static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
duke@435	207	static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
duke@435	208	static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
duke@435	209	// Debugging/printing
duke@435	210	static void print(); // prints the interpreter code
duke@435	211
duke@435	212	public:
twisti@1861	213	// Interpreter helpers
twisti@1861	214	const static int stackElementWords = 1;
twisti@1861	215	const static int stackElementSize = stackElementWords * wordSize;
twisti@1861	216	const static int logStackElementSize = LogBytesPerWord;
duke@435	217
duke@435	218	// Local values relative to locals[n]
duke@435	219	static int local_offset_in_bytes(int n) {
twisti@1861	220	return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
duke@435	221	}
duke@435	222
jrose@1161	223	// access to stacked values according to type:
jrose@1161	224	static oop* oop_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	225	return (oop*) slot_addr;
jrose@1161	226	}
jrose@1161	227	static jint* int_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	228	if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
jrose@1161	229	// big-endian LP64
jrose@1161	230	return (jint*)(slot_addr + 1) - 1;
jrose@1161	231	else
jrose@1161	232	return (jint*) slot_addr;
jrose@1161	233	}
jrose@1161	234	static jlong long_in_slot(intptr_t* slot_addr) {
jrose@1161	235	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	236	return *(jlong*) slot_addr;
twisti@1861	237	} else {
jrose@1161	238	return Bytes::get_native_u8((address)slot_addr);
jrose@1161	239	}
jrose@1161	240	}
jrose@1161	241	static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
jrose@1161	242	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	243	*(jlong*) slot_addr = value;
twisti@1861	244	} else {
jrose@1161	245	Bytes::put_native_u8((address)slot_addr, value);
jrose@1161	246	}
jrose@1161	247	}
jrose@1161	248	static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	249	switch (type) {
jrose@1161	250	case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
jrose@1161	251	case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
jrose@1161	252	case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
jrose@1161	253	case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
jrose@1161	254	case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
jrose@1161	255	case T_LONG: value->j = long_in_slot(slot_addr); break;
jrose@1161	256	case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
jrose@1161	257	case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
jrose@1161	258	case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
jrose@1161	259	default: ShouldNotReachHere();
jrose@1161	260	}
jrose@1161	261	}
jrose@1161	262	static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	263	switch (type) {
jrose@1161	264	case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
jrose@1161	265	case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
jrose@1161	266	case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
jrose@1161	267	case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
jrose@1161	268	case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
jrose@1161	269	case T_LONG: set_long_in_slot(slot_addr, value->j); break;
jrose@1161	270	case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
jrose@1161	271	case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
jrose@1161	272	case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
jrose@1161	273	default: ShouldNotReachHere();
jrose@1161	274	}
jrose@1161	275	}
duke@435	276	};
duke@435	277
duke@435	278	//------------------------------------------------------------------------------------------------------------------------
duke@435	279	// The interpreter generator.
duke@435	280
duke@435	281	class Template;
duke@435	282	class AbstractInterpreterGenerator: public StackObj {
duke@435	283	protected:
duke@435	284	InterpreterMacroAssembler* _masm;
duke@435	285
duke@435	286	// shared code sequences
duke@435	287	// Converter for native abi result to tosca result
duke@435	288	address generate_result_handler_for(BasicType type);
duke@435	289	address generate_slow_signature_handler();
duke@435	290
duke@435	291	// entry point generator
duke@435	292	address generate_method_entry(AbstractInterpreter::MethodKind kind);
duke@435	293
duke@435	294	void bang_stack_shadow_pages(bool native_call);
duke@435	295
duke@435	296	void generate_all();
twisti@4237	297	void initialize_method_handle_entries();
duke@435	298
duke@435	299	public:
duke@435	300	AbstractInterpreterGenerator(StubQueue* _code);
duke@435	301	};
stefank@2314	302
stefank@2314	303	#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP