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src/share/vm/runtime/stubRoutines.hpp@7ee622712fcf (annotated)

src/share/vm/runtime/stubRoutines.hpp

Tue, 04 Mar 2008 09:44:24 -0500

author

sbohne

date

Tue, 04 Mar 2008 09:44:24 -0500

changeset 493

7ee622712fcf

parent 435

a61af66fc99e

child 451

f8236e79048a

permissions

-rw-r--r--

6666698: EnableBiasedLocking with BiasedLockingStartupDelay can block Watcher thread
Summary: Enqueue VM_EnableBiasedLocking operation asynchronously
Reviewed-by: never, xlu, kbr, acorn

duke@435	1	/*
duke@435	2	* Copyright 1997-2007 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// StubRoutines provides entry points to assembly routines used by
duke@435	26	// compiled code and the run-time system. Platform-specific entry
duke@435	27	// points are defined in the platform-specific inner class.
duke@435	28	//
duke@435	29	// Class scheme:
duke@435	30	//
duke@435	31	// platform-independent platform-dependent
duke@435	32	//
duke@435	33	// stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp
duke@435	34	// ^ ^
duke@435	35	// | |
duke@435	36	// implements implements
duke@435	37	// | |
duke@435	38	// | |
duke@435	39	// stubRoutines.cpp stubRoutines_<arch>.cpp
duke@435	40	// stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp
duke@435	41	// stubRoutines_<os_arch>.cpp
duke@435	42	//
duke@435	43	// Note 1: The important thing is a clean decoupling between stub
duke@435	44	// entry points (interfacing to the whole vm; i.e., 1-to-n
duke@435	45	// relationship) and stub generators (interfacing only to
duke@435	46	// the entry points implementation; i.e., 1-to-1 relationship).
duke@435	47	// This significantly simplifies changes in the generator
duke@435	48	// structure since the rest of the vm is not affected.
duke@435	49	//
duke@435	50	// Note 2: stubGenerator_<arch>.cpp contains a minimal portion of
duke@435	51	// machine-independent code; namely the generator calls of
duke@435	52	// the generator functions that are used platform-independently.
duke@435	53	// However, it comes with the advantage of having a 1-file
duke@435	54	// implementation of the generator. It should be fairly easy
duke@435	55	// to change, should it become a problem later.
duke@435	56	//
duke@435	57	// Scheme for adding a new entry point:
duke@435	58	//
duke@435	59	// 1. determine if it's a platform-dependent or independent entry point
duke@435	60	// a) if platform independent: make subsequent changes in the independent files
duke@435	61	// b) if platform dependent: make subsequent changes in the dependent files
duke@435	62	// 2. add a private instance variable holding the entry point address
duke@435	63	// 3. add a public accessor function to the instance variable
duke@435	64	// 4. implement the corresponding generator function in the platform-dependent
duke@435	65	// stubGenerator_<arch>.cpp file and call the function in generate_all() of that file
duke@435	66
duke@435	67
duke@435	68	class StubRoutines: AllStatic {
duke@435	69
duke@435	70	public:
duke@435	71	enum platform_independent_constants {
duke@435	72	max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups
duke@435	73	};
duke@435	74
duke@435	75	// Dependencies
duke@435	76	friend class StubGenerator;
duke@435	77	#include "incls/_stubRoutines_pd.hpp.incl" // machine-specific parts
duke@435	78
duke@435	79	static jint _verify_oop_count;
duke@435	80	static address _verify_oop_subroutine_entry;
duke@435	81
duke@435	82	static address _call_stub_return_address; // the return PC, when returning to a call stub
duke@435	83	static address _call_stub_entry;
duke@435	84	static address _forward_exception_entry;
duke@435	85	static address _catch_exception_entry;
duke@435	86	static address _throw_AbstractMethodError_entry;
duke@435	87	static address _throw_ArithmeticException_entry;
duke@435	88	static address _throw_NullPointerException_entry;
duke@435	89	static address _throw_NullPointerException_at_call_entry;
duke@435	90	static address _throw_StackOverflowError_entry;
duke@435	91	static address _handler_for_unsafe_access_entry;
duke@435	92
duke@435	93	static address _atomic_xchg_entry;
duke@435	94	static address _atomic_xchg_ptr_entry;
duke@435	95	static address _atomic_store_entry;
duke@435	96	static address _atomic_store_ptr_entry;
duke@435	97	static address _atomic_cmpxchg_entry;
duke@435	98	static address _atomic_cmpxchg_ptr_entry;
duke@435	99	static address _atomic_cmpxchg_long_entry;
duke@435	100	static address _atomic_add_entry;
duke@435	101	static address _atomic_add_ptr_entry;
duke@435	102	static address _fence_entry;
duke@435	103	static address _d2i_wrapper;
duke@435	104	static address _d2l_wrapper;
duke@435	105
duke@435	106	static jint _fpu_cntrl_wrd_std;
duke@435	107	static jint _fpu_cntrl_wrd_24;
duke@435	108	static jint _fpu_cntrl_wrd_64;
duke@435	109	static jint _fpu_cntrl_wrd_trunc;
duke@435	110	static jint _mxcsr_std;
duke@435	111	static jint _fpu_subnormal_bias1[3];
duke@435	112	static jint _fpu_subnormal_bias2[3];
duke@435	113
duke@435	114	static BufferBlob* _code1; // code buffer for initial routines
duke@435	115	static BufferBlob* _code2; // code buffer for all other routines
duke@435	116
duke@435	117	// Leaf routines which implement arraycopy and their addresses
duke@435	118	// arraycopy operands aligned on element type boundary
duke@435	119	static address _jbyte_arraycopy;
duke@435	120	static address _jshort_arraycopy;
duke@435	121	static address _jint_arraycopy;
duke@435	122	static address _jlong_arraycopy;
duke@435	123	static address _oop_arraycopy;
duke@435	124	static address _jbyte_disjoint_arraycopy;
duke@435	125	static address _jshort_disjoint_arraycopy;
duke@435	126	static address _jint_disjoint_arraycopy;
duke@435	127	static address _jlong_disjoint_arraycopy;
duke@435	128	static address _oop_disjoint_arraycopy;
duke@435	129
duke@435	130	// arraycopy operands aligned on zero'th element boundary
duke@435	131	// These are identical to the ones aligned aligned on an
duke@435	132	// element type boundary, except that they assume that both
duke@435	133	// source and destination are HeapWord aligned.
duke@435	134	static address _arrayof_jbyte_arraycopy;
duke@435	135	static address _arrayof_jshort_arraycopy;
duke@435	136	static address _arrayof_jint_arraycopy;
duke@435	137	static address _arrayof_jlong_arraycopy;
duke@435	138	static address _arrayof_oop_arraycopy;
duke@435	139	static address _arrayof_jbyte_disjoint_arraycopy;
duke@435	140	static address _arrayof_jshort_disjoint_arraycopy;
duke@435	141	static address _arrayof_jint_disjoint_arraycopy;
duke@435	142	static address _arrayof_jlong_disjoint_arraycopy;
duke@435	143	static address _arrayof_oop_disjoint_arraycopy;
duke@435	144
duke@435	145	// these are recommended but optional:
duke@435	146	static address _checkcast_arraycopy;
duke@435	147	static address _unsafe_arraycopy;
duke@435	148	static address _generic_arraycopy;
duke@435	149
duke@435	150	public:
duke@435	151	// Initialization/Testing
duke@435	152	static void initialize1(); // must happen before universe::genesis
duke@435	153	static void initialize2(); // must happen after universe::genesis
duke@435	154
duke@435	155	static bool contains(address addr) {
duke@435	156	return
duke@435	157	(_code1 != NULL && _code1->blob_contains(addr)) ||
duke@435	158	(_code2 != NULL && _code2->blob_contains(addr)) ;
duke@435	159	}
duke@435	160
duke@435	161	// Debugging
duke@435	162	static jint verify_oop_count() { return _verify_oop_count; }
duke@435	163	static jint* verify_oop_count_addr() { return &_verify_oop_count; }
duke@435	164	// a subroutine for debugging the GC
duke@435	165	static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; }
duke@435	166
duke@435	167	static address catch_exception_entry() { return _catch_exception_entry; }
duke@435	168
duke@435	169	// Calls to Java
duke@435	170	typedef void (*CallStub)(
duke@435	171	address link,
duke@435	172	intptr_t* result,
duke@435	173	BasicType result_type,
duke@435	174	methodOopDesc* method,
duke@435	175	address entry_point,
duke@435	176	intptr_t* parameters,
duke@435	177	int size_of_parameters,
duke@435	178	TRAPS
duke@435	179	);
duke@435	180
duke@435	181	static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); }
duke@435	182
duke@435	183	// Exceptions
duke@435	184	static address forward_exception_entry() { return _forward_exception_entry; }
duke@435	185	// Implicit exceptions
duke@435	186	static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; }
duke@435	187	static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; }
duke@435	188	static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; }
duke@435	189	static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; }
duke@435	190	static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; }
duke@435	191
duke@435	192	// Exceptions during unsafe access - should throw Java exception rather
duke@435	193	// than crash.
duke@435	194	static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; }
duke@435	195
duke@435	196	static address atomic_xchg_entry() { return _atomic_xchg_entry; }
duke@435	197	static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; }
duke@435	198	static address atomic_store_entry() { return _atomic_store_entry; }
duke@435	199	static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; }
duke@435	200	static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; }
duke@435	201	static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; }
duke@435	202	static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; }
duke@435	203	static address atomic_add_entry() { return _atomic_add_entry; }
duke@435	204	static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; }
duke@435	205	static address fence_entry() { return _fence_entry; }
duke@435	206
duke@435	207	static address d2i_wrapper() { return _d2i_wrapper; }
duke@435	208	static address d2l_wrapper() { return _d2l_wrapper; }
duke@435	209	static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; }
duke@435	210	static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; }
duke@435	211	static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; }
duke@435	212	static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; }
duke@435	213	static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; }
duke@435	214	static address addr_mxcsr_std() { return (address)&_mxcsr_std; }
duke@435	215	static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; }
duke@435	216	static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; }
duke@435	217
duke@435	218
duke@435	219	static address jbyte_arraycopy() { return _jbyte_arraycopy; }
duke@435	220	static address jshort_arraycopy() { return _jshort_arraycopy; }
duke@435	221	static address jint_arraycopy() { return _jint_arraycopy; }
duke@435	222	static address jlong_arraycopy() { return _jlong_arraycopy; }
duke@435	223	static address oop_arraycopy() { return _oop_arraycopy; }
duke@435	224	static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; }
duke@435	225	static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; }
duke@435	226	static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; }
duke@435	227	static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; }
duke@435	228	static address oop_disjoint_arraycopy() { return _oop_disjoint_arraycopy; }
duke@435	229
duke@435	230	static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; }
duke@435	231	static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; }
duke@435	232	static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; }
duke@435	233	static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; }
duke@435	234	static address arrayof_oop_arraycopy() { return _arrayof_oop_arraycopy; }
duke@435	235
duke@435	236	static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; }
duke@435	237	static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; }
duke@435	238	static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; }
duke@435	239	static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; }
duke@435	240	static address arrayof_oop_disjoint_arraycopy() { return _arrayof_oop_disjoint_arraycopy; }
duke@435	241
duke@435	242	static address checkcast_arraycopy() { return _checkcast_arraycopy; }
duke@435	243	static address unsafe_arraycopy() { return _unsafe_arraycopy; }
duke@435	244	static address generic_arraycopy() { return _generic_arraycopy; }
duke@435	245
duke@435	246	//
duke@435	247	// Default versions of the above arraycopy functions for platforms which do
duke@435	248	// not have specialized versions
duke@435	249	//
duke@435	250	static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
duke@435	251	static void jshort_copy(jshort* src, jshort* dest, size_t count);
duke@435	252	static void jint_copy (jint* src, jint* dest, size_t count);
duke@435	253	static void jlong_copy (jlong* src, jlong* dest, size_t count);
duke@435	254	static void oop_copy (oop* src, oop* dest, size_t count);
duke@435	255
duke@435	256	static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	257	static void arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count);
duke@435	258	static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	259	static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	260	static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	261	};