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src/share/vm/runtime/stubRoutines.hpp@0715f0cf171d (annotated)

src/share/vm/runtime/stubRoutines.hpp

Fri, 08 Oct 2010 09:29:09 -0700

author

jcoomes

date

Fri, 08 Oct 2010 09:29:09 -0700

changeset 2198

0715f0cf171d

parent 2118

d6f45b55c972

child 2314

f95d63e2154a

permissions

-rw-r--r--

Merge

duke@435	1	/*
trims@1907	2	* Copyright (c) 1997, 2010, 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
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;
dcubed@451	87	static address _throw_IncompatibleClassChangeError_entry;
duke@435	88	static address _throw_ArithmeticException_entry;
duke@435	89	static address _throw_NullPointerException_entry;
duke@435	90	static address _throw_NullPointerException_at_call_entry;
duke@435	91	static address _throw_StackOverflowError_entry;
duke@435	92	static address _handler_for_unsafe_access_entry;
duke@435	93
duke@435	94	static address _atomic_xchg_entry;
duke@435	95	static address _atomic_xchg_ptr_entry;
duke@435	96	static address _atomic_store_entry;
duke@435	97	static address _atomic_store_ptr_entry;
duke@435	98	static address _atomic_cmpxchg_entry;
duke@435	99	static address _atomic_cmpxchg_ptr_entry;
duke@435	100	static address _atomic_cmpxchg_long_entry;
duke@435	101	static address _atomic_add_entry;
duke@435	102	static address _atomic_add_ptr_entry;
duke@435	103	static address _fence_entry;
duke@435	104	static address _d2i_wrapper;
duke@435	105	static address _d2l_wrapper;
duke@435	106
duke@435	107	static jint _fpu_cntrl_wrd_std;
duke@435	108	static jint _fpu_cntrl_wrd_24;
duke@435	109	static jint _fpu_cntrl_wrd_64;
duke@435	110	static jint _fpu_cntrl_wrd_trunc;
duke@435	111	static jint _mxcsr_std;
duke@435	112	static jint _fpu_subnormal_bias1[3];
duke@435	113	static jint _fpu_subnormal_bias2[3];
duke@435	114
duke@435	115	static BufferBlob* _code1; // code buffer for initial routines
duke@435	116	static BufferBlob* _code2; // code buffer for all other routines
duke@435	117
duke@435	118	// Leaf routines which implement arraycopy and their addresses
duke@435	119	// arraycopy operands aligned on element type boundary
duke@435	120	static address _jbyte_arraycopy;
duke@435	121	static address _jshort_arraycopy;
duke@435	122	static address _jint_arraycopy;
duke@435	123	static address _jlong_arraycopy;
duke@435	124	static address _oop_arraycopy;
duke@435	125	static address _jbyte_disjoint_arraycopy;
duke@435	126	static address _jshort_disjoint_arraycopy;
duke@435	127	static address _jint_disjoint_arraycopy;
duke@435	128	static address _jlong_disjoint_arraycopy;
duke@435	129	static address _oop_disjoint_arraycopy;
duke@435	130
duke@435	131	// arraycopy operands aligned on zero'th element boundary
duke@435	132	// These are identical to the ones aligned aligned on an
duke@435	133	// element type boundary, except that they assume that both
duke@435	134	// source and destination are HeapWord aligned.
duke@435	135	static address _arrayof_jbyte_arraycopy;
duke@435	136	static address _arrayof_jshort_arraycopy;
duke@435	137	static address _arrayof_jint_arraycopy;
duke@435	138	static address _arrayof_jlong_arraycopy;
duke@435	139	static address _arrayof_oop_arraycopy;
duke@435	140	static address _arrayof_jbyte_disjoint_arraycopy;
duke@435	141	static address _arrayof_jshort_disjoint_arraycopy;
duke@435	142	static address _arrayof_jint_disjoint_arraycopy;
duke@435	143	static address _arrayof_jlong_disjoint_arraycopy;
duke@435	144	static address _arrayof_oop_disjoint_arraycopy;
duke@435	145
duke@435	146	// these are recommended but optional:
duke@435	147	static address _checkcast_arraycopy;
duke@435	148	static address _unsafe_arraycopy;
duke@435	149	static address _generic_arraycopy;
duke@435	150
never@2118	151	static address _jbyte_fill;
never@2118	152	static address _jshort_fill;
never@2118	153	static address _jint_fill;
never@2118	154	static address _arrayof_jbyte_fill;
never@2118	155	static address _arrayof_jshort_fill;
never@2118	156	static address _arrayof_jint_fill;
never@2118	157
never@1609	158	// These are versions of the java.lang.Math methods which perform
never@1609	159	// the same operations as the intrinsic version. They are used for
never@1609	160	// constant folding in the compiler to ensure equivalence. If the
never@1609	161	// intrinsic version returns the same result as the strict version
never@1609	162	// then they can be set to the appropriate function from
never@1609	163	// SharedRuntime.
never@1609	164	static double (*_intrinsic_log)(double);
never@1609	165	static double (*_intrinsic_log10)(double);
never@1609	166	static double (*_intrinsic_exp)(double);
never@1609	167	static double (*_intrinsic_pow)(double, double);
never@1609	168	static double (*_intrinsic_sin)(double);
never@1609	169	static double (*_intrinsic_cos)(double);
never@1609	170	static double (*_intrinsic_tan)(double);
never@1609	171
duke@435	172	public:
duke@435	173	// Initialization/Testing
duke@435	174	static void initialize1(); // must happen before universe::genesis
duke@435	175	static void initialize2(); // must happen after universe::genesis
duke@435	176
duke@435	177	static bool contains(address addr) {
duke@435	178	return
duke@435	179	(_code1 != NULL && _code1->blob_contains(addr)) ||
duke@435	180	(_code2 != NULL && _code2->blob_contains(addr)) ;
duke@435	181	}
duke@435	182
duke@435	183	// Debugging
duke@435	184	static jint verify_oop_count() { return _verify_oop_count; }
duke@435	185	static jint* verify_oop_count_addr() { return &_verify_oop_count; }
duke@435	186	// a subroutine for debugging the GC
duke@435	187	static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; }
duke@435	188
duke@435	189	static address catch_exception_entry() { return _catch_exception_entry; }
duke@435	190
duke@435	191	// Calls to Java
duke@435	192	typedef void (*CallStub)(
duke@435	193	address link,
duke@435	194	intptr_t* result,
duke@435	195	BasicType result_type,
duke@435	196	methodOopDesc* method,
duke@435	197	address entry_point,
duke@435	198	intptr_t* parameters,
duke@435	199	int size_of_parameters,
duke@435	200	TRAPS
duke@435	201	);
duke@435	202
duke@435	203	static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); }
duke@435	204
duke@435	205	// Exceptions
duke@435	206	static address forward_exception_entry() { return _forward_exception_entry; }
duke@435	207	// Implicit exceptions
duke@435	208	static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; }
dcubed@451	209	static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; }
duke@435	210	static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; }
duke@435	211	static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; }
duke@435	212	static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; }
duke@435	213	static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; }
duke@435	214
duke@435	215	// Exceptions during unsafe access - should throw Java exception rather
duke@435	216	// than crash.
duke@435	217	static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; }
duke@435	218
duke@435	219	static address atomic_xchg_entry() { return _atomic_xchg_entry; }
duke@435	220	static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; }
duke@435	221	static address atomic_store_entry() { return _atomic_store_entry; }
duke@435	222	static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; }
duke@435	223	static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; }
duke@435	224	static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; }
duke@435	225	static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; }
duke@435	226	static address atomic_add_entry() { return _atomic_add_entry; }
duke@435	227	static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; }
duke@435	228	static address fence_entry() { return _fence_entry; }
duke@435	229
duke@435	230	static address d2i_wrapper() { return _d2i_wrapper; }
duke@435	231	static address d2l_wrapper() { return _d2l_wrapper; }
duke@435	232	static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; }
duke@435	233	static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; }
duke@435	234	static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; }
duke@435	235	static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; }
duke@435	236	static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; }
duke@435	237	static address addr_mxcsr_std() { return (address)&_mxcsr_std; }
duke@435	238	static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; }
duke@435	239	static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; }
duke@435	240
duke@435	241
duke@435	242	static address jbyte_arraycopy() { return _jbyte_arraycopy; }
duke@435	243	static address jshort_arraycopy() { return _jshort_arraycopy; }
duke@435	244	static address jint_arraycopy() { return _jint_arraycopy; }
duke@435	245	static address jlong_arraycopy() { return _jlong_arraycopy; }
duke@435	246	static address oop_arraycopy() { return _oop_arraycopy; }
duke@435	247	static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; }
duke@435	248	static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; }
duke@435	249	static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; }
duke@435	250	static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; }
duke@435	251	static address oop_disjoint_arraycopy() { return _oop_disjoint_arraycopy; }
duke@435	252
duke@435	253	static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; }
duke@435	254	static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; }
duke@435	255	static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; }
duke@435	256	static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; }
duke@435	257	static address arrayof_oop_arraycopy() { return _arrayof_oop_arraycopy; }
duke@435	258
duke@435	259	static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; }
duke@435	260	static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; }
duke@435	261	static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; }
duke@435	262	static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; }
duke@435	263	static address arrayof_oop_disjoint_arraycopy() { return _arrayof_oop_disjoint_arraycopy; }
duke@435	264
duke@435	265	static address checkcast_arraycopy() { return _checkcast_arraycopy; }
duke@435	266	static address unsafe_arraycopy() { return _unsafe_arraycopy; }
duke@435	267	static address generic_arraycopy() { return _generic_arraycopy; }
duke@435	268
never@2118	269	static address jbyte_fill() { return _jbyte_fill; }
never@2118	270	static address jshort_fill() { return _jshort_fill; }
never@2118	271	static address jint_fill() { return _jint_fill; }
never@2118	272	static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; }
never@2118	273	static address arrayof_jshort_fill() { return _arrayof_jshort_fill; }
never@2118	274	static address arrayof_jint_fill() { return _arrayof_jint_fill; }
never@2118	275
never@2118	276	static address select_fill_function(BasicType t, bool aligned, const char* &name);
never@2118	277
never@2118	278
never@1609	279	static double intrinsic_log(double d) {
never@1609	280	assert(_intrinsic_log != NULL, "must be defined");
never@1609	281	return _intrinsic_log(d);
never@1609	282	}
never@1609	283	static double intrinsic_log10(double d) {
never@1609	284	assert(_intrinsic_log != NULL, "must be defined");
never@1609	285	return _intrinsic_log10(d);
never@1609	286	}
never@1609	287	static double intrinsic_exp(double d) {
never@1609	288	assert(_intrinsic_exp != NULL, "must be defined");
never@1609	289	return _intrinsic_exp(d);
never@1609	290	}
never@1609	291	static double intrinsic_pow(double d, double d2) {
never@1609	292	assert(_intrinsic_pow != NULL, "must be defined");
never@1609	293	return _intrinsic_pow(d, d2);
never@1609	294	}
never@1609	295	static double intrinsic_sin(double d) {
never@1609	296	assert(_intrinsic_sin != NULL, "must be defined");
never@1609	297	return _intrinsic_sin(d);
never@1609	298	}
never@1609	299	static double intrinsic_cos(double d) {
never@1609	300	assert(_intrinsic_cos != NULL, "must be defined");
never@1609	301	return _intrinsic_cos(d);
never@1609	302	}
never@1609	303	static double intrinsic_tan(double d) {
never@1609	304	assert(_intrinsic_tan != NULL, "must be defined");
never@1609	305	return _intrinsic_tan(d);
never@1609	306	}
never@1609	307
duke@435	308	//
duke@435	309	// Default versions of the above arraycopy functions for platforms which do
duke@435	310	// not have specialized versions
duke@435	311	//
duke@435	312	static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
duke@435	313	static void jshort_copy(jshort* src, jshort* dest, size_t count);
duke@435	314	static void jint_copy (jint* src, jint* dest, size_t count);
duke@435	315	static void jlong_copy (jlong* src, jlong* dest, size_t count);
duke@435	316	static void oop_copy (oop* src, oop* dest, size_t count);
duke@435	317
duke@435	318	static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	319	static void arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count);
duke@435	320	static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	321	static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	322	static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
duke@435	323	};