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src/share/vm/interpreter/abstractInterpreter.hpp@f08d439fab8c (annotated)

src/share/vm/interpreter/abstractInterpreter.hpp

Sun, 25 Sep 2011 16:03:29 -0700

author

never

date

Sun, 25 Sep 2011 16:03:29 -0700

changeset 3156

f08d439fab8c

parent 2901

3d2ab563047a

child 3787

6759698e3140

permissions

-rw-r--r--

7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>

duke@435	1	/*
jrose@2639	2	* Copyright (c) 1997, 2011, 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@2314	30	#include "runtime/vmThread.hpp"
stefank@2314	31	#include "utilities/top.hpp"
stefank@2314	32	#ifdef TARGET_ARCH_MODEL_x86_32
stefank@2314	33	# include "interp_masm_x86_32.hpp"
stefank@2314	34	#endif
stefank@2314	35	#ifdef TARGET_ARCH_MODEL_x86_64
stefank@2314	36	# include "interp_masm_x86_64.hpp"
stefank@2314	37	#endif
stefank@2314	38	#ifdef TARGET_ARCH_MODEL_sparc
stefank@2314	39	# include "interp_masm_sparc.hpp"
stefank@2314	40	#endif
stefank@2314	41	#ifdef TARGET_ARCH_MODEL_zero
stefank@2314	42	# include "interp_masm_zero.hpp"
stefank@2314	43	#endif
bobv@2508	44	#ifdef TARGET_ARCH_MODEL_arm
bobv@2508	45	# include "interp_masm_arm.hpp"
bobv@2508	46	#endif
bobv@2508	47	#ifdef TARGET_ARCH_MODEL_ppc
bobv@2508	48	# include "interp_masm_ppc.hpp"
bobv@2508	49	#endif
stefank@2314	50	#ifdef TARGET_OS_FAMILY_linux
stefank@2314	51	# include "thread_linux.inline.hpp"
stefank@2314	52	#endif
stefank@2314	53	#ifdef TARGET_OS_FAMILY_solaris
stefank@2314	54	# include "thread_solaris.inline.hpp"
stefank@2314	55	#endif
stefank@2314	56	#ifdef TARGET_OS_FAMILY_windows
stefank@2314	57	# include "thread_windows.inline.hpp"
stefank@2314	58	#endif
never@3156	59	#ifdef TARGET_OS_FAMILY_bsd
never@3156	60	# include "thread_bsd.inline.hpp"
never@3156	61	#endif
stefank@2314	62
twisti@1040	63	// This file contains the platform-independent parts
duke@435	64	// of the abstract interpreter and the abstract interpreter generator.
duke@435	65
duke@435	66	// Organization of the interpreter(s). There exists two different interpreters in hotpot
duke@435	67	// an assembly language version (aka template interpreter) and a high level language version
duke@435	68	// (aka c++ interpreter). Th division of labor is as follows:
duke@435	69
duke@435	70	// Template Interpreter C++ Interpreter Functionality
duke@435	71	//
duke@435	72	// templateTable* bytecodeInterpreter* actual interpretation of bytecodes
duke@435	73	//
duke@435	74	// templateInterpreter* cppInterpreter* generation of assembly code that creates
duke@435	75	// and manages interpreter runtime frames.
duke@435	76	// Also code for populating interpreter
duke@435	77	// frames created during deoptimization.
duke@435	78	//
duke@435	79	// For both template and c++ interpreter. There are common files for aspects of the interpreter
duke@435	80	// that are generic to both interpreters. This is the layout:
duke@435	81	//
duke@435	82	// abstractInterpreter.hpp: generic description of the interpreter.
duke@435	83	// interpreter*: generic frame creation and handling.
duke@435	84	//
duke@435	85
duke@435	86	//------------------------------------------------------------------------------------------------------------------------
duke@435	87	// The C++ interface to the bytecode interpreter(s).
duke@435	88
duke@435	89	class AbstractInterpreter: AllStatic {
duke@435	90	friend class VMStructs;
duke@435	91	friend class Interpreter;
duke@435	92	friend class CppInterpreterGenerator;
duke@435	93	public:
duke@435	94	enum MethodKind {
duke@435	95	zerolocals, // method needs locals initialization
duke@435	96	zerolocals_synchronized, // method needs locals initialization & is synchronized
duke@435	97	native, // native method
duke@435	98	native_synchronized, // native method & is synchronized
duke@435	99	empty, // empty method (code: _return)
duke@435	100	accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
duke@435	101	abstract, // abstract method (throws an AbstractMethodException)
jrose@2639	102	method_handle, // java.lang.invoke.MethodHandles::invoke
duke@435	103	java_lang_math_sin, // implementation of java.lang.Math.sin (x)
duke@435	104	java_lang_math_cos, // implementation of java.lang.Math.cos (x)
duke@435	105	java_lang_math_tan, // implementation of java.lang.Math.tan (x)
duke@435	106	java_lang_math_abs, // implementation of java.lang.Math.abs (x)
duke@435	107	java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
duke@435	108	java_lang_math_log, // implementation of java.lang.Math.log (x)
duke@435	109	java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
johnc@2781	110	java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
duke@435	111	number_of_method_entries,
duke@435	112	invalid = -1
duke@435	113	};
duke@435	114
duke@435	115	enum SomeConstants {
duke@435	116	number_of_result_handlers = 10 // number of result handlers for native calls
duke@435	117	};
duke@435	118
duke@435	119	protected:
duke@435	120	static StubQueue* _code; // the interpreter code (codelets)
duke@435	121
duke@435	122	static bool _notice_safepoints; // true if safepoints are activated
duke@435	123
duke@435	124	static address _native_entry_begin; // Region for native entry code
duke@435	125	static address _native_entry_end;
duke@435	126
duke@435	127	// method entry points
duke@435	128	static address _entry_table[number_of_method_entries]; // entry points for a given method
duke@435	129	static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
duke@435	130	static address _slow_signature_handler; // the native method generic (slow) signature handler
duke@435	131
duke@435	132	static address _rethrow_exception_entry; // rethrows an activation in previous frame
duke@435	133
duke@435	134	friend class AbstractInterpreterGenerator;
duke@435	135	friend class InterpreterGenerator;
duke@435	136	friend class InterpreterMacroAssembler;
duke@435	137
duke@435	138	public:
duke@435	139	// Initialization/debugging
duke@435	140	static void initialize();
duke@435	141	static StubQueue* code() { return _code; }
duke@435	142
duke@435	143
duke@435	144	// Method activation
duke@435	145	static MethodKind method_kind(methodHandle m);
duke@435	146	static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
johnc@2781	147	static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
duke@435	148
duke@435	149	static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
duke@435	150
never@1609	151	static bool can_be_compiled(methodHandle m);
never@1609	152
duke@435	153	// Runtime support
duke@435	154
duke@435	155	// length = invoke bytecode length (to advance to next bytecode)
duke@435	156	static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
duke@435	157	static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; }
duke@435	158
duke@435	159	static address rethrow_exception_entry() { return _rethrow_exception_entry; }
duke@435	160
duke@435	161	// Activation size in words for a method that is just being called.
duke@435	162	// Parameters haven't been pushed so count them too.
duke@435	163	static int size_top_interpreter_activation(methodOop method);
duke@435	164
duke@435	165	// Deoptimization support
cfang@1335	166	// Compute the entry address for continuation after
cfang@1335	167	static address deopt_continue_after_entry(methodOop method,
cfang@1335	168	address bcp,
cfang@1335	169	int callee_parameters,
cfang@1335	170	bool is_top_frame);
cfang@1335	171	// Compute the entry address for reexecution
cfang@1335	172	static address deopt_reexecute_entry(methodOop method, address bcp);
cfang@1335	173	// Deoptimization should reexecute this bytecode
cfang@1335	174	static bool bytecode_should_reexecute(Bytecodes::Code code);
duke@435	175
duke@435	176	// share implementation of size_activation and layout_activation:
duke@435	177	static int size_activation(methodOop method,
duke@435	178	int temps,
duke@435	179	int popframe_args,
duke@435	180	int monitors,
never@2901	181	int caller_actual_parameters,
duke@435	182	int callee_params,
duke@435	183	int callee_locals,
never@2901	184	bool is_top_frame) {
never@2901	185	return layout_activation(method,
never@2901	186	temps,
never@2901	187	popframe_args,
never@2901	188	monitors,
never@2901	189	caller_actual_parameters,
never@2901	190	callee_params,
never@2901	191	callee_locals,
never@2901	192	(frame*)NULL,
never@2901	193	(frame*)NULL,
never@2901	194	is_top_frame);
never@2901	195	}
duke@435	196
duke@435	197	static int layout_activation(methodOop method,
never@2901	198	int temps,
never@2901	199	int popframe_args,
never@2901	200	int monitors,
never@2901	201	int caller_actual_parameters,
never@2901	202	int callee_params,
never@2901	203	int callee_locals,
never@2901	204	frame* caller,
never@2901	205	frame* interpreter_frame,
never@2901	206	bool is_top_frame);
duke@435	207
duke@435	208	// Runtime support
duke@435	209	static bool is_not_reached( methodHandle method, int bci);
duke@435	210	// Safepoint support
duke@435	211	static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
duke@435	212	static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
duke@435	213
duke@435	214	// Support for native calls
duke@435	215	static address slow_signature_handler() { return _slow_signature_handler; }
duke@435	216	static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
duke@435	217	static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
duke@435	218	static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
duke@435	219	// Debugging/printing
duke@435	220	static void print(); // prints the interpreter code
duke@435	221
duke@435	222	public:
twisti@1861	223	// Interpreter helpers
twisti@1861	224	const static int stackElementWords = 1;
twisti@1861	225	const static int stackElementSize = stackElementWords * wordSize;
twisti@1861	226	const static int logStackElementSize = LogBytesPerWord;
duke@435	227
duke@435	228	// Local values relative to locals[n]
duke@435	229	static int local_offset_in_bytes(int n) {
twisti@1861	230	return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
duke@435	231	}
duke@435	232
jrose@1161	233	// access to stacked values according to type:
jrose@1161	234	static oop* oop_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	235	return (oop*) slot_addr;
jrose@1161	236	}
jrose@1161	237	static jint* int_addr_in_slot(intptr_t* slot_addr) {
jrose@1161	238	if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
jrose@1161	239	// big-endian LP64
jrose@1161	240	return (jint*)(slot_addr + 1) - 1;
jrose@1161	241	else
jrose@1161	242	return (jint*) slot_addr;
jrose@1161	243	}
jrose@1161	244	static jlong long_in_slot(intptr_t* slot_addr) {
jrose@1161	245	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	246	return *(jlong*) slot_addr;
twisti@1861	247	} else {
jrose@1161	248	return Bytes::get_native_u8((address)slot_addr);
jrose@1161	249	}
jrose@1161	250	}
jrose@1161	251	static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
jrose@1161	252	if (sizeof(intptr_t) >= sizeof(jlong)) {
jrose@1161	253	*(jlong*) slot_addr = value;
twisti@1861	254	} else {
jrose@1161	255	Bytes::put_native_u8((address)slot_addr, value);
jrose@1161	256	}
jrose@1161	257	}
jrose@1161	258	static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	259	switch (type) {
jrose@1161	260	case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
jrose@1161	261	case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
jrose@1161	262	case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
jrose@1161	263	case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
jrose@1161	264	case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
jrose@1161	265	case T_LONG: value->j = long_in_slot(slot_addr); break;
jrose@1161	266	case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
jrose@1161	267	case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
jrose@1161	268	case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
jrose@1161	269	default: ShouldNotReachHere();
jrose@1161	270	}
jrose@1161	271	}
jrose@1161	272	static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
jrose@1161	273	switch (type) {
jrose@1161	274	case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
jrose@1161	275	case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
jrose@1161	276	case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
jrose@1161	277	case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
jrose@1161	278	case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
jrose@1161	279	case T_LONG: set_long_in_slot(slot_addr, value->j); break;
jrose@1161	280	case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
jrose@1161	281	case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
jrose@1161	282	case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
jrose@1161	283	default: ShouldNotReachHere();
jrose@1161	284	}
jrose@1161	285	}
duke@435	286	};
duke@435	287
duke@435	288	//------------------------------------------------------------------------------------------------------------------------
duke@435	289	// The interpreter generator.
duke@435	290
duke@435	291	class Template;
duke@435	292	class AbstractInterpreterGenerator: public StackObj {
duke@435	293	protected:
duke@435	294	InterpreterMacroAssembler* _masm;
duke@435	295
duke@435	296	// shared code sequences
duke@435	297	// Converter for native abi result to tosca result
duke@435	298	address generate_result_handler_for(BasicType type);
duke@435	299	address generate_slow_signature_handler();
duke@435	300
duke@435	301	// entry point generator
duke@435	302	address generate_method_entry(AbstractInterpreter::MethodKind kind);
duke@435	303
duke@435	304	void bang_stack_shadow_pages(bool native_call);
duke@435	305
duke@435	306	void generate_all();
duke@435	307
duke@435	308	public:
duke@435	309	AbstractInterpreterGenerator(StubQueue* _code);
duke@435	310	};
stefank@2314	311
stefank@2314	312	#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP