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src/share/vm/runtime/stubRoutines.hpp@da91efe96a93 (annotated)

src/share/vm/runtime/stubRoutines.hpp

Sat, 01 Sep 2012 13:25:18 -0400

author

coleenp

date

Sat, 01 Sep 2012 13:25:18 -0400

changeset 4037

da91efe96a93

parent 3969

1d7922586cf6

child 4205

a3ecd773a7b9

permissions

-rw-r--r--

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

duke@435	1	/*
coleenp@4037	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 SHARE_VM_RUNTIME_STUBROUTINES_HPP
stefank@2314	26	#define SHARE_VM_RUNTIME_STUBROUTINES_HPP
stefank@2314	27
stefank@2314	28	#include "code/codeBlob.hpp"
stefank@2314	29	#include "memory/allocation.hpp"
stefank@2314	30	#include "runtime/frame.hpp"
stefank@2314	31	#include "runtime/mutexLocker.hpp"
stefank@2314	32	#include "runtime/stubCodeGenerator.hpp"
stefank@2314	33	#include "utilities/top.hpp"
stefank@2314	34	#ifdef TARGET_ARCH_x86
stefank@2314	35	# include "nativeInst_x86.hpp"
stefank@2314	36	#endif
stefank@2314	37	#ifdef TARGET_ARCH_sparc
stefank@2314	38	# include "nativeInst_sparc.hpp"
stefank@2314	39	#endif
stefank@2314	40	#ifdef TARGET_ARCH_zero
stefank@2314	41	# include "nativeInst_zero.hpp"
stefank@2314	42	#endif
bobv@2508	43	#ifdef TARGET_ARCH_arm
bobv@2508	44	# include "nativeInst_arm.hpp"
bobv@2508	45	#endif
bobv@2508	46	#ifdef TARGET_ARCH_ppc
bobv@2508	47	# include "nativeInst_ppc.hpp"
bobv@2508	48	#endif
stefank@2314	49
duke@435	50	// StubRoutines provides entry points to assembly routines used by
duke@435	51	// compiled code and the run-time system. Platform-specific entry
duke@435	52	// points are defined in the platform-specific inner class.
duke@435	53	//
duke@435	54	// Class scheme:
duke@435	55	//
duke@435	56	// platform-independent platform-dependent
duke@435	57	//
duke@435	58	// stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp
duke@435	59	// ^ ^
duke@435	60	// | |
duke@435	61	// implements implements
duke@435	62	// | |
duke@435	63	// | |
duke@435	64	// stubRoutines.cpp stubRoutines_<arch>.cpp
duke@435	65	// stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp
duke@435	66	// stubRoutines_<os_arch>.cpp
duke@435	67	//
duke@435	68	// Note 1: The important thing is a clean decoupling between stub
duke@435	69	// entry points (interfacing to the whole vm; i.e., 1-to-n
duke@435	70	// relationship) and stub generators (interfacing only to
duke@435	71	// the entry points implementation; i.e., 1-to-1 relationship).
duke@435	72	// This significantly simplifies changes in the generator
duke@435	73	// structure since the rest of the vm is not affected.
duke@435	74	//
duke@435	75	// Note 2: stubGenerator_<arch>.cpp contains a minimal portion of
duke@435	76	// machine-independent code; namely the generator calls of
duke@435	77	// the generator functions that are used platform-independently.
duke@435	78	// However, it comes with the advantage of having a 1-file
duke@435	79	// implementation of the generator. It should be fairly easy
duke@435	80	// to change, should it become a problem later.
duke@435	81	//
duke@435	82	// Scheme for adding a new entry point:
duke@435	83	//
duke@435	84	// 1. determine if it's a platform-dependent or independent entry point
duke@435	85	// a) if platform independent: make subsequent changes in the independent files
duke@435	86	// b) if platform dependent: make subsequent changes in the dependent files
duke@435	87	// 2. add a private instance variable holding the entry point address
duke@435	88	// 3. add a public accessor function to the instance variable
duke@435	89	// 4. implement the corresponding generator function in the platform-dependent
duke@435	90	// stubGenerator_<arch>.cpp file and call the function in generate_all() of that file
duke@435	91
duke@435	92
duke@435	93	class StubRoutines: AllStatic {
duke@435	94
duke@435	95	public:
duke@435	96	enum platform_independent_constants {
duke@435	97	max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups
duke@435	98	};
duke@435	99
duke@435	100	// Dependencies
duke@435	101	friend class StubGenerator;
stefank@2314	102	#ifdef TARGET_ARCH_MODEL_x86_32
stefank@2314	103	# include "stubRoutines_x86_32.hpp"
stefank@2314	104	#endif
stefank@2314	105	#ifdef TARGET_ARCH_MODEL_x86_64
stefank@2314	106	# include "stubRoutines_x86_64.hpp"
stefank@2314	107	#endif
stefank@2314	108	#ifdef TARGET_ARCH_MODEL_sparc
stefank@2314	109	# include "stubRoutines_sparc.hpp"
stefank@2314	110	#endif
stefank@2314	111	#ifdef TARGET_ARCH_MODEL_zero
stefank@2314	112	# include "stubRoutines_zero.hpp"
stefank@2314	113	#endif
bobv@2508	114	#ifdef TARGET_ARCH_MODEL_arm
bobv@2508	115	# include "stubRoutines_arm.hpp"
bobv@2508	116	#endif
bobv@2508	117	#ifdef TARGET_ARCH_MODEL_ppc
bobv@2508	118	# include "stubRoutines_ppc.hpp"
bobv@2508	119	#endif
stefank@2314	120
duke@435	121
duke@435	122	static jint _verify_oop_count;
duke@435	123	static address _verify_oop_subroutine_entry;
duke@435	124
duke@435	125	static address _call_stub_return_address; // the return PC, when returning to a call stub
duke@435	126	static address _call_stub_entry;
duke@435	127	static address _forward_exception_entry;
duke@435	128	static address _catch_exception_entry;
duke@435	129	static address _throw_AbstractMethodError_entry;
dcubed@451	130	static address _throw_IncompatibleClassChangeError_entry;
duke@435	131	static address _throw_NullPointerException_at_call_entry;
duke@435	132	static address _throw_StackOverflowError_entry;
duke@435	133	static address _handler_for_unsafe_access_entry;
duke@435	134
duke@435	135	static address _atomic_xchg_entry;
duke@435	136	static address _atomic_xchg_ptr_entry;
duke@435	137	static address _atomic_store_entry;
duke@435	138	static address _atomic_store_ptr_entry;
duke@435	139	static address _atomic_cmpxchg_entry;
duke@435	140	static address _atomic_cmpxchg_ptr_entry;
duke@435	141	static address _atomic_cmpxchg_long_entry;
duke@435	142	static address _atomic_add_entry;
duke@435	143	static address _atomic_add_ptr_entry;
duke@435	144	static address _fence_entry;
duke@435	145	static address _d2i_wrapper;
duke@435	146	static address _d2l_wrapper;
duke@435	147
duke@435	148	static jint _fpu_cntrl_wrd_std;
duke@435	149	static jint _fpu_cntrl_wrd_24;
duke@435	150	static jint _fpu_cntrl_wrd_64;
duke@435	151	static jint _fpu_cntrl_wrd_trunc;
duke@435	152	static jint _mxcsr_std;
duke@435	153	static jint _fpu_subnormal_bias1[3];
duke@435	154	static jint _fpu_subnormal_bias2[3];
duke@435	155
duke@435	156	static BufferBlob* _code1; // code buffer for initial routines
duke@435	157	static BufferBlob* _code2; // code buffer for all other routines
duke@435	158
duke@435	159	// Leaf routines which implement arraycopy and their addresses
duke@435	160	// arraycopy operands aligned on element type boundary
duke@435	161	static address _jbyte_arraycopy;
duke@435	162	static address _jshort_arraycopy;
duke@435	163	static address _jint_arraycopy;
duke@435	164	static address _jlong_arraycopy;
iveresov@2606	165	static address _oop_arraycopy, _oop_arraycopy_uninit;
duke@435	166	static address _jbyte_disjoint_arraycopy;
duke@435	167	static address _jshort_disjoint_arraycopy;
duke@435	168	static address _jint_disjoint_arraycopy;
duke@435	169	static address _jlong_disjoint_arraycopy;
iveresov@2606	170	static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit;
duke@435	171
duke@435	172	// arraycopy operands aligned on zero'th element boundary
duke@435	173	// These are identical to the ones aligned aligned on an
duke@435	174	// element type boundary, except that they assume that both
duke@435	175	// source and destination are HeapWord aligned.
duke@435	176	static address _arrayof_jbyte_arraycopy;
duke@435	177	static address _arrayof_jshort_arraycopy;
duke@435	178	static address _arrayof_jint_arraycopy;
duke@435	179	static address _arrayof_jlong_arraycopy;
iveresov@2606	180	static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit;
duke@435	181	static address _arrayof_jbyte_disjoint_arraycopy;
duke@435	182	static address _arrayof_jshort_disjoint_arraycopy;
duke@435	183	static address _arrayof_jint_disjoint_arraycopy;
duke@435	184	static address _arrayof_jlong_disjoint_arraycopy;
iveresov@2606	185	static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit;
duke@435	186
duke@435	187	// these are recommended but optional:
iveresov@2606	188	static address _checkcast_arraycopy, _checkcast_arraycopy_uninit;
duke@435	189	static address _unsafe_arraycopy;
duke@435	190	static address _generic_arraycopy;
duke@435	191
never@2118	192	static address _jbyte_fill;
never@2118	193	static address _jshort_fill;
never@2118	194	static address _jint_fill;
never@2118	195	static address _arrayof_jbyte_fill;
never@2118	196	static address _arrayof_jshort_fill;
never@2118	197	static address _arrayof_jint_fill;
never@2118	198
kvn@3092	199	// zero heap space aligned to jlong (8 bytes)
kvn@3092	200	static address _zero_aligned_words;
kvn@3092	201
never@1609	202	// These are versions of the java.lang.Math methods which perform
never@1609	203	// the same operations as the intrinsic version. They are used for
never@1609	204	// constant folding in the compiler to ensure equivalence. If the
never@1609	205	// intrinsic version returns the same result as the strict version
never@1609	206	// then they can be set to the appropriate function from
never@1609	207	// SharedRuntime.
never@1609	208	static double (*_intrinsic_log)(double);
never@1609	209	static double (*_intrinsic_log10)(double);
never@1609	210	static double (*_intrinsic_exp)(double);
never@1609	211	static double (*_intrinsic_pow)(double, double);
never@1609	212	static double (*_intrinsic_sin)(double);
never@1609	213	static double (*_intrinsic_cos)(double);
never@1609	214	static double (*_intrinsic_tan)(double);
never@1609	215
duke@435	216	public:
duke@435	217	// Initialization/Testing
duke@435	218	static void initialize1(); // must happen before universe::genesis
duke@435	219	static void initialize2(); // must happen after universe::genesis
duke@435	220
duke@435	221	static bool contains(address addr) {
duke@435	222	return
duke@435	223	(_code1 != NULL && _code1->blob_contains(addr)) ||
duke@435	224	(_code2 != NULL && _code2->blob_contains(addr)) ;
duke@435	225	}
duke@435	226
twisti@3969	227	static CodeBlob* code1() { return _code1; }
twisti@3969	228	static CodeBlob* code2() { return _code2; }
twisti@3969	229
duke@435	230	// Debugging
duke@435	231	static jint verify_oop_count() { return _verify_oop_count; }
duke@435	232	static jint* verify_oop_count_addr() { return &_verify_oop_count; }
duke@435	233	// a subroutine for debugging the GC
duke@435	234	static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; }
duke@435	235
duke@435	236	static address catch_exception_entry() { return _catch_exception_entry; }
duke@435	237
duke@435	238	// Calls to Java
duke@435	239	typedef void (*CallStub)(
duke@435	240	address link,
duke@435	241	intptr_t* result,
duke@435	242	BasicType result_type,
coleenp@4037	243	Method* method,
duke@435	244	address entry_point,
duke@435	245	intptr_t* parameters,
duke@435	246	int size_of_parameters,
duke@435	247	TRAPS
duke@435	248	);
duke@435	249
duke@435	250	static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); }
duke@435	251
duke@435	252	// Exceptions
duke@435	253	static address forward_exception_entry() { return _forward_exception_entry; }
duke@435	254	// Implicit exceptions
duke@435	255	static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; }
dcubed@451	256	static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; }
duke@435	257	static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; }
duke@435	258	static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; }
duke@435	259
duke@435	260	// Exceptions during unsafe access - should throw Java exception rather
duke@435	261	// than crash.
duke@435	262	static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; }
duke@435	263
duke@435	264	static address atomic_xchg_entry() { return _atomic_xchg_entry; }
duke@435	265	static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; }
duke@435	266	static address atomic_store_entry() { return _atomic_store_entry; }
duke@435	267	static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; }
duke@435	268	static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; }
duke@435	269	static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; }
duke@435	270	static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; }
duke@435	271	static address atomic_add_entry() { return _atomic_add_entry; }
duke@435	272	static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; }
duke@435	273	static address fence_entry() { return _fence_entry; }
duke@435	274
duke@435	275	static address d2i_wrapper() { return _d2i_wrapper; }
duke@435	276	static address d2l_wrapper() { return _d2l_wrapper; }
duke@435	277	static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; }
duke@435	278	static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; }
duke@435	279	static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; }
duke@435	280	static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; }
duke@435	281	static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; }
duke@435	282	static address addr_mxcsr_std() { return (address)&_mxcsr_std; }
duke@435	283	static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; }
duke@435	284	static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; }
duke@435	285
duke@435	286
roland@2728	287	static address select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized);
roland@2728	288
duke@435	289	static address jbyte_arraycopy() { return _jbyte_arraycopy; }
duke@435	290	static address jshort_arraycopy() { return _jshort_arraycopy; }
duke@435	291	static address jint_arraycopy() { return _jint_arraycopy; }
duke@435	292	static address jlong_arraycopy() { return _jlong_arraycopy; }
iveresov@2606	293	static address oop_arraycopy(bool dest_uninitialized = false) {
iveresov@2606	294	return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy;
iveresov@2606	295	}
duke@435	296	static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; }
duke@435	297	static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; }
duke@435	298	static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; }
duke@435	299	static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; }
iveresov@2606	300	static address oop_disjoint_arraycopy(bool dest_uninitialized = false) {
iveresov@2606	301	return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy;
iveresov@2606	302	}
duke@435	303
duke@435	304	static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; }
duke@435	305	static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; }
duke@435	306	static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; }
duke@435	307	static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; }
iveresov@2606	308	static address arrayof_oop_arraycopy(bool dest_uninitialized = false) {
iveresov@2606	309	return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy;
iveresov@2606	310	}
duke@435	311
duke@435	312	static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; }
duke@435	313	static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; }
duke@435	314	static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; }
duke@435	315	static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; }
iveresov@2606	316	static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) {
iveresov@2606	317	return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy;
iveresov@2606	318	}
duke@435	319
iveresov@2606	320	static address checkcast_arraycopy(bool dest_uninitialized = false) {
iveresov@2606	321	return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy;
iveresov@2606	322	}
duke@435	323	static address unsafe_arraycopy() { return _unsafe_arraycopy; }
duke@435	324	static address generic_arraycopy() { return _generic_arraycopy; }
duke@435	325
never@2118	326	static address jbyte_fill() { return _jbyte_fill; }
never@2118	327	static address jshort_fill() { return _jshort_fill; }
never@2118	328	static address jint_fill() { return _jint_fill; }
never@2118	329	static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; }
never@2118	330	static address arrayof_jshort_fill() { return _arrayof_jshort_fill; }
never@2118	331	static address arrayof_jint_fill() { return _arrayof_jint_fill; }
never@2118	332
never@2118	333	static address select_fill_function(BasicType t, bool aligned, const char* &name);
never@2118	334
kvn@3092	335	static address zero_aligned_words() { return _zero_aligned_words; }
never@2118	336
never@1609	337	static double intrinsic_log(double d) {
never@1609	338	assert(_intrinsic_log != NULL, "must be defined");
never@1609	339	return _intrinsic_log(d);
never@1609	340	}
never@1609	341	static double intrinsic_log10(double d) {
never@1609	342	assert(_intrinsic_log != NULL, "must be defined");
never@1609	343	return _intrinsic_log10(d);
never@1609	344	}
never@1609	345	static double intrinsic_exp(double d) {
never@1609	346	assert(_intrinsic_exp != NULL, "must be defined");
never@1609	347	return _intrinsic_exp(d);
never@1609	348	}
never@1609	349	static double intrinsic_pow(double d, double d2) {
never@1609	350	assert(_intrinsic_pow != NULL, "must be defined");
never@1609	351	return _intrinsic_pow(d, d2);
never@1609	352	}
never@1609	353	static double intrinsic_sin(double d) {
never@1609	354	assert(_intrinsic_sin != NULL, "must be defined");
never@1609	355	return _intrinsic_sin(d);
never@1609	356	}
never@1609	357	static double intrinsic_cos(double d) {
never@1609	358	assert(_intrinsic_cos != NULL, "must be defined");
never@1609	359	return _intrinsic_cos(d);
never@1609	360	}
never@1609	361	static double intrinsic_tan(double d) {
never@1609	362	assert(_intrinsic_tan != NULL, "must be defined");
never@1609	363	return _intrinsic_tan(d);
never@1609	364	}
never@1609	365
duke@435	366	//
duke@435	367	// Default versions of the above arraycopy functions for platforms which do
duke@435	368	// not have specialized versions
duke@435	369	//
iveresov@2606	370	static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
iveresov@2606	371	static void jshort_copy (jshort* src, jshort* dest, size_t count);
iveresov@2606	372	static void jint_copy (jint* src, jint* dest, size_t count);
iveresov@2606	373	static void jlong_copy (jlong* src, jlong* dest, size_t count);
iveresov@2606	374	static void oop_copy (oop* src, oop* dest, size_t count);
iveresov@2606	375	static void oop_copy_uninit(oop* src, oop* dest, size_t count);
duke@435	376
iveresov@2606	377	static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
iveresov@2606	378	static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count);
iveresov@2606	379	static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
iveresov@2606	380	static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
iveresov@2606	381	static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
iveresov@2606	382	static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count);
duke@435	383	};
stefank@2314	384
stefank@2314	385	#endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP