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src/share/vm/interpreter/abstractInterpreter.hpp@6cc7093e1341 (annotated)

src/share/vm/interpreter/abstractInterpreter.hpp

Thu, 11 Jul 2013 12:56:29 -0700

author

kvn

date

Thu, 11 Jul 2013 12:56:29 -0700

changeset 6454

6cc7093e1341

parent 6441

d2907f74462e

parent 5353

b800986664f4

child 6472

2b8e28fdf503

permissions

-rw-r--r--

Merge

duke@435	1	/*
drchase@5353	2	* Copyright (c) 1997, 2013, 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"
stefank@2314	33	#ifdef TARGET_ARCH_MODEL_x86_32
stefank@2314	34	# include "interp_masm_x86_32.hpp"
stefank@2314	35	#endif
stefank@2314	36	#ifdef TARGET_ARCH_MODEL_x86_64
stefank@2314	37	# include "interp_masm_x86_64.hpp"
stefank@2314	38	#endif
stefank@2314	39	#ifdef TARGET_ARCH_MODEL_sparc
stefank@2314	40	# include "interp_masm_sparc.hpp"
stefank@2314	41	#endif
stefank@2314	42	#ifdef TARGET_ARCH_MODEL_zero
stefank@2314	43	# include "interp_masm_zero.hpp"
stefank@2314	44	#endif
bobv@2508	45	#ifdef TARGET_ARCH_MODEL_arm
bobv@2508	46	# include "interp_masm_arm.hpp"
bobv@2508	47	#endif
goetz@6441	48	#ifdef TARGET_ARCH_MODEL_ppc_32
goetz@6441	49	# include "interp_masm_ppc_32.hpp"
goetz@6441	50	#endif
goetz@6441	51	#ifdef TARGET_ARCH_MODEL_ppc_64
goetz@6441	52	# include "interp_masm_ppc_64.hpp"
bobv@2508	53	#endif
stefank@2314	54
twisti@1040	55	// This file contains the platform-independent parts
duke@435	56	// of the abstract interpreter and the abstract interpreter generator.
duke@435	57
duke@435	58	// Organization of the interpreter(s). There exists two different interpreters in hotpot
duke@435	59	// an assembly language version (aka template interpreter) and a high level language version
duke@435	60	// (aka c++ interpreter). Th division of labor is as follows:
duke@435	61
duke@435	62	// Template Interpreter C++ Interpreter Functionality
duke@435	63	//
duke@435	64	// templateTable* bytecodeInterpreter* actual interpretation of bytecodes
duke@435	65	//
duke@435	66	// templateInterpreter* cppInterpreter* generation of assembly code that creates
duke@435	67	// and manages interpreter runtime frames.
duke@435	68	// Also code for populating interpreter
duke@435	69	// frames created during deoptimization.
duke@435	70	//
duke@435	71	// For both template and c++ interpreter. There are common files for aspects of the interpreter
duke@435	72	// that are generic to both interpreters. This is the layout:
duke@435	73	//
duke@435	74	// abstractInterpreter.hpp: generic description of the interpreter.
duke@435	75	// interpreter*: generic frame creation and handling.
duke@435	76	//
duke@435	77
duke@435	78	//------------------------------------------------------------------------------------------------------------------------
duke@435	79	// The C++ interface to the bytecode interpreter(s).
duke@435	80
duke@435	81	class AbstractInterpreter: AllStatic {
duke@435	82	friend class VMStructs;
duke@435	83	friend class Interpreter;
duke@435	84	friend class CppInterpreterGenerator;
duke@435	85	public:
duke@435	86	enum MethodKind {
duke@435	87	zerolocals, // method needs locals initialization
duke@435	88	zerolocals_synchronized, // method needs locals initialization & is synchronized
duke@435	89	native, // native method
duke@435	90	native_synchronized, // native method & is synchronized
duke@435	91	empty, // empty method (code: _return)
duke@435	92	accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
duke@435	93	abstract, // abstract method (throws an AbstractMethodException)
twisti@3969	94	method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
twisti@3969	95	method_handle_invoke_LAST = (method_handle_invoke_FIRST
twisti@3969	96	+ (vmIntrinsics::LAST_MH_SIG_POLY
twisti@3969	97	- vmIntrinsics::FIRST_MH_SIG_POLY)),
duke@435	98	java_lang_math_sin, // implementation of java.lang.Math.sin (x)
duke@435	99	java_lang_math_cos, // implementation of java.lang.Math.cos (x)
duke@435	100	java_lang_math_tan, // implementation of java.lang.Math.tan (x)
duke@435	101	java_lang_math_abs, // implementation of java.lang.Math.abs (x)
duke@435	102	java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
duke@435	103	java_lang_math_log, // implementation of java.lang.Math.log (x)
duke@435	104	java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
roland@3787	105	java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
roland@3787	106	java_lang_math_exp, // implementation of java.lang.Math.exp (x)
johnc@2781	107	java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
drchase@5353	108	java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
drchase@5353	109	java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
drchase@5353	110	java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
duke@435	111	number_of_method_entries,
duke@435	112	invalid = -1
duke@435	113	};
duke@435	114
twisti@3969	115	// Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
twisti@3969	116	static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
twisti@3969	117	if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
twisti@3969	118	return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
twisti@3969	119	else
twisti@3969	120	return vmIntrinsics::_none;
twisti@3969	121	}
twisti@3969	122
duke@435	123	enum SomeConstants {
duke@435	124	number_of_result_handlers = 10 // number of result handlers for native calls
duke@435	125	};
duke@435	126
duke@435	127	protected:
duke@435	128	static StubQueue* _code; // the interpreter code (codelets)
duke@435	129
duke@435	130	static bool _notice_safepoints; // true if safepoints are activated
duke@435	131
duke@435	132	static address _native_entry_begin; // Region for native entry code
duke@435	133	static address _native_entry_end;
duke@435	134
duke@435	135	// method entry points
duke@435	136	static address _entry_table[number_of_method_entries]; // entry points for a given method
duke@435	137	static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
duke@435	138	static address _slow_signature_handler; // the native method generic (slow) signature handler
duke@435	139
duke@435	140	static address _rethrow_exception_entry; // rethrows an activation in previous frame
duke@435	141
duke@435	142	friend class AbstractInterpreterGenerator;
duke@435	143	friend class InterpreterGenerator;
duke@435	144	friend class InterpreterMacroAssembler;
duke@435	145
duke@435	146	public:
duke@435	147	// Initialization/debugging
duke@435	148	static void initialize();
duke@435	149	static StubQueue* code() { return _code; }
duke@435	150
duke@435	151
duke@435	152	// Method activation
duke@435	153	static MethodKind method_kind(methodHandle m);
duke@435	154	static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
johnc@2781	155	static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
duke@435	156
twisti@3969	157	// used for bootstrapping method handles:
twisti@3969	158	static void set_entry_for_kind(MethodKind k, address e);
twisti@3969	159
duke@435	160	static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
duke@435	161
never@1609	162	static bool can_be_compiled(methodHandle m);
never@1609	163
duke@435	164	// Runtime support
duke@435	165
duke@435	166	// length = invoke bytecode length (to advance to next bytecode)
duke@435	167	static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
duke@435	168	static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
duke@435	169
duke@435	170	static address rethrow_exception_entry() { return _rethrow_exception_entry; }
duke@435	171
duke@435	172	// Activation size in words for a method that is just being called.
duke@435	173	// Parameters haven't been pushed so count them too.
coleenp@4037	174	static int size_top_interpreter_activation(Method* method);
duke@435	175
duke@435	176	// Deoptimization support
cfang@1335	177	// Compute the entry address for continuation after
coleenp@4037	178	static address deopt_continue_after_entry(Method* method,
cfang@1335	179	address bcp,
cfang@1335	180	int callee_parameters,
cfang@1335	181	bool is_top_frame);
cfang@1335	182	// Compute the entry address for reexecution
coleenp@4037	183	static address deopt_reexecute_entry(Method* method, address bcp);
cfang@1335	184	// Deoptimization should reexecute this bytecode
cfang@1335	185	static bool bytecode_should_reexecute(Bytecodes::Code code);
duke@435	186
duke@435	187	// share implementation of size_activation and layout_activation:
coleenp@4037	188	static int size_activation(Method* method,
duke@435	189	int temps,
duke@435	190	int popframe_args,
duke@435	191	int monitors,
never@2901	192	int caller_actual_parameters,
duke@435	193	int callee_params,
duke@435	194	int callee_locals,
roland@4727	195	bool is_top_frame,
roland@4727	196	bool is_bottom_frame) {
never@2901	197	return layout_activation(method,
never@2901	198	temps,
never@2901	199	popframe_args,
never@2901	200	monitors,
never@2901	201	caller_actual_parameters,
never@2901	202	callee_params,
never@2901	203	callee_locals,
never@2901	204	(frame*)NULL,
never@2901	205	(frame*)NULL,
roland@4727	206	is_top_frame,
roland@4727	207	is_bottom_frame);
never@2901	208	}
duke@435	209
coleenp@4037	210	static int layout_activation(Method* method,
never@2901	211	int temps,
never@2901	212	int popframe_args,
never@2901	213	int monitors,
never@2901	214	int caller_actual_parameters,
never@2901	215	int callee_params,
never@2901	216	int callee_locals,
never@2901	217	frame* caller,
never@2901	218	frame* interpreter_frame,
roland@4727	219	bool is_top_frame,
roland@4727	220	bool is_bottom_frame);
duke@435	221
duke@435	222	// Runtime support
duke@435	223	static bool is_not_reached( methodHandle method, int bci);
duke@435	224	// Safepoint support
duke@435	225	static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
duke@435	226	static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
duke@435	227
duke@435	228	// Support for native calls
duke@435	229	static address slow_signature_handler() { return _slow_signature_handler; }
duke@435	230	static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
duke@435	231	static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
duke@435	232	static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
duke@435	233	// Debugging/printing
duke@435	234	static void print(); // prints the interpreter code
duke@435	235
duke@435	236	public:
twisti@1861	237	// Interpreter helpers
twisti@1861	238	const static int stackElementWords = 1;
twisti@1861	239	const static int stackElementSize = stackElementWords * wordSize;
twisti@1861	240	const static int logStackElementSize = LogBytesPerWord;
duke@435	241
duke@435	242	// Local values relative to locals[n]
duke@435	243	static int local_offset_in_bytes(int n) {
twisti@1861	244	return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
duke@435	245	}
duke@435	246
jrose@1161	247	// access to stacked values according to type:
jrose@1161	248	static oop* oop_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	249	return (oop*) slot_addr;
jrose@1161	250	}
jrose@1161	251	static jint* int_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	252	if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
jrose@1161	253	// big-endian LP64
jrose@1161	254	return (jint*)(slot_addr + 1) - 1;
jrose@1161	255	else
jrose@1161	256	return (jint*) slot_addr;
jrose@1161	257	}
jrose@1161	258	static jlong long_in_slot(intptr_t* slot_addr) {
jrose@1161	259	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	260	return *(jlong*) slot_addr;
twisti@1861	261	} else {
jrose@1161	262	return Bytes::get_native_u8((address)slot_addr);
jrose@1161	263	}
jrose@1161	264	}
jrose@1161	265	static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
jrose@1161	266	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	267	*(jlong*) slot_addr = value;
twisti@1861	268	} else {
jrose@1161	269	Bytes::put_native_u8((address)slot_addr, value);
jrose@1161	270	}
jrose@1161	271	}
jrose@1161	272	static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	273	switch (type) {
jrose@1161	274	case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
jrose@1161	275	case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
jrose@1161	276	case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
jrose@1161	277	case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
jrose@1161	278	case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
jrose@1161	279	case T_LONG: value->j = long_in_slot(slot_addr); break;
jrose@1161	280	case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
jrose@1161	281	case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
jrose@1161	282	case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
jrose@1161	283	default: ShouldNotReachHere();
jrose@1161	284	}
jrose@1161	285	}
jrose@1161	286	static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	287	switch (type) {
jrose@1161	288	case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
jrose@1161	289	case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
jrose@1161	290	case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
jrose@1161	291	case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
jrose@1161	292	case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
jrose@1161	293	case T_LONG: set_long_in_slot(slot_addr, value->j); break;
jrose@1161	294	case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
jrose@1161	295	case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
jrose@1161	296	case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
jrose@1161	297	default: ShouldNotReachHere();
jrose@1161	298	}
jrose@1161	299	}
duke@435	300	};
duke@435	301
duke@435	302	//------------------------------------------------------------------------------------------------------------------------
duke@435	303	// The interpreter generator.
duke@435	304
duke@435	305	class Template;
duke@435	306	class AbstractInterpreterGenerator: public StackObj {
duke@435	307	protected:
duke@435	308	InterpreterMacroAssembler* _masm;
duke@435	309
duke@435	310	// shared code sequences
duke@435	311	// Converter for native abi result to tosca result
duke@435	312	address generate_result_handler_for(BasicType type);
duke@435	313	address generate_slow_signature_handler();
duke@435	314
duke@435	315	// entry point generator
duke@435	316	address generate_method_entry(AbstractInterpreter::MethodKind kind);
duke@435	317
duke@435	318	void bang_stack_shadow_pages(bool native_call);
duke@435	319
duke@435	320	void generate_all();
twisti@4237	321	void initialize_method_handle_entries();
duke@435	322
duke@435	323	public:
duke@435	324	AbstractInterpreterGenerator(StubQueue* _code);
duke@435	325	};
stefank@2314	326
stefank@2314	327	#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP