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src/cpu/zero/vm/stubGenerator_zero.cpp@da91efe96a93 (annotated)

src/cpu/zero/vm/stubGenerator_zero.cpp

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

author

coleenp

date

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

changeset 4037

da91efe96a93

parent 3156

f08d439fab8c

child 4299

f34d701e952e

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>

never@1445	1	/*
coleenp@4037	2	* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
twisti@1814	3	* Copyright 2007, 2008, 2010 Red Hat, Inc.
never@1445	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445	5	*
never@1445	6	* This code is free software; you can redistribute it and/or modify it
never@1445	7	* under the terms of the GNU General Public License version 2 only, as
never@1445	8	* published by the Free Software Foundation.
never@1445	9	*
never@1445	10	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1445	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445	13	* version 2 for more details (a copy is included in the LICENSE file that
never@1445	14	* accompanied this code).
never@1445	15	*
never@1445	16	* You should have received a copy of the GNU General Public License version
never@1445	17	* 2 along with this work; if not, write to the Free Software Foundation,
never@1445	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445	19	*
trims@1907	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	21	* or visit www.oracle.com if you need additional information or have any
trims@1907	22	* questions.
never@1445	23	*
never@1445	24	*/
never@1445	25
stefank@2314	26	#include "precompiled.hpp"
stefank@2314	27	#include "asm/assembler.hpp"
stefank@2314	28	#include "assembler_zero.inline.hpp"
stefank@2314	29	#include "interpreter/interpreter.hpp"
stefank@2314	30	#include "nativeInst_zero.hpp"
stefank@2314	31	#include "oops/instanceOop.hpp"
coleenp@4037	32	#include "oops/method.hpp"
stefank@2314	33	#include "oops/objArrayKlass.hpp"
stefank@2314	34	#include "oops/oop.inline.hpp"
stefank@2314	35	#include "prims/methodHandles.hpp"
stefank@2314	36	#include "runtime/frame.inline.hpp"
stefank@2314	37	#include "runtime/handles.inline.hpp"
stefank@2314	38	#include "runtime/sharedRuntime.hpp"
stefank@2314	39	#include "runtime/stubCodeGenerator.hpp"
stefank@2314	40	#include "runtime/stubRoutines.hpp"
stefank@2314	41	#include "stack_zero.inline.hpp"
stefank@2314	42	#include "utilities/top.hpp"
stefank@2314	43	#ifdef TARGET_OS_FAMILY_linux
stefank@2314	44	# include "thread_linux.inline.hpp"
stefank@2314	45	#endif
never@3156	46	#ifdef TARGET_OS_FAMILY_bsd
never@3156	47	# include "thread_bsd.inline.hpp"
never@3156	48	#endif
stefank@2314	49	#ifdef COMPILER2
stefank@2314	50	#include "opto/runtime.hpp"
stefank@2314	51	#endif
never@1445	52
never@1445	53	// Declaration and definition of StubGenerator (no .hpp file).
never@1445	54	// For a more detailed description of the stub routine structure
never@1445	55	// see the comment in stubRoutines.hpp
never@1445	56
never@1445	57	class StubGenerator: public StubCodeGenerator {
never@1445	58	private:
never@1445	59	// The call stub is used to call Java from C
never@1445	60	static void call_stub(
never@1445	61	JavaCallWrapper *call_wrapper,
never@1445	62	intptr_t* result,
never@1445	63	BasicType result_type,
coleenp@4037	64	Method* method,
never@1445	65	address entry_point,
never@1445	66	intptr_t* parameters,
never@1445	67	int parameter_words,
never@1445	68	TRAPS) {
never@1445	69	JavaThread *thread = (JavaThread *) THREAD;
never@1445	70	ZeroStack *stack = thread->zero_stack();
never@1445	71
never@1445	72	// Make sure we have no pending exceptions
never@1445	73	assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception");
never@1445	74
never@1445	75	// Set up the stack if necessary
never@1445	76	bool stack_needs_teardown = false;
never@1445	77	if (stack->needs_setup()) {
twisti@1866	78	size_t zero_stack_size = stack->suggest_size(thread);
never@1445	79	stack->setup(alloca(zero_stack_size), zero_stack_size);
never@1445	80	stack_needs_teardown = true;
never@1445	81	}
never@1445	82
never@1445	83	// Allocate and initialize our frame
twisti@1814	84	EntryFrame *frame =
twisti@1814	85	EntryFrame::build(parameters, parameter_words, call_wrapper, THREAD);
never@1445	86
twisti@1814	87	if (!HAS_PENDING_EXCEPTION) {
twisti@1814	88	// Push the frame
twisti@1814	89	thread->push_zero_frame(frame);
never@1445	90
twisti@1814	91	// Make the call
twisti@1814	92	Interpreter::invoke_method(method, entry_point, THREAD);
twisti@1814	93
twisti@1814	94	// Store the result
twisti@1814	95	if (!HAS_PENDING_EXCEPTION) {
twisti@1814	96	switch (result_type) {
twisti@1814	97	case T_INT:
twisti@1814	98	*(jint *) result = *(jint *) stack->sp();
twisti@1814	99	break;
twisti@1814	100	case T_LONG:
twisti@1814	101	*(jlong *) result = *(jlong *) stack->sp();
twisti@1814	102	break;
twisti@1814	103	case T_FLOAT:
twisti@1814	104	*(jfloat *) result = *(jfloat *) stack->sp();
twisti@1814	105	break;
twisti@1814	106	case T_DOUBLE:
twisti@1814	107	*(jdouble *) result = *(jdouble *) stack->sp();
twisti@1814	108	break;
twisti@1814	109	case T_OBJECT:
twisti@1814	110	*(oop *) result = *(oop *) stack->sp();
twisti@1814	111	break;
twisti@1814	112	default:
twisti@1814	113	ShouldNotReachHere();
twisti@1814	114	}
never@1445	115	}
twisti@1814	116
twisti@1814	117	// Unwind the frame
twisti@1814	118	thread->pop_zero_frame();
never@1445	119	}
never@1445	120
never@1445	121	// Tear down the stack if necessary
never@1445	122	if (stack_needs_teardown)
never@1445	123	stack->teardown();
never@1445	124	}
never@1445	125
never@1445	126	// These stubs get called from some dumb test routine.
never@1445	127	// I'll write them properly when they're called from
never@1445	128	// something that's actually doing something.
never@1445	129	static void fake_arraycopy_stub(address src, address dst, int count) {
never@1445	130	assert(count == 0, "huh?");
never@1445	131	}
never@1445	132
never@1445	133	void generate_arraycopy_stubs() {
never@1445	134	// Call the conjoint generation methods immediately after
never@1445	135	// the disjoint ones so that short branches from the former
never@1445	136	// to the latter can be generated.
never@1445	137	StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub;
never@1445	138	StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub;
never@1445	139
never@1445	140	StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub;
never@1445	141	StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub;
never@1445	142
never@1445	143	StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub;
never@1445	144	StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub;
never@1445	145
never@1445	146	StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub;
never@1445	147	StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub;
never@1445	148
never@1445	149	StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub();
never@1445	150	StubRoutines::_oop_arraycopy = ShouldNotCallThisStub();
never@1445	151
never@1445	152	StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub();
never@1445	153	StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub();
never@1445	154	StubRoutines::_generic_arraycopy = ShouldNotCallThisStub();
never@1445	155
never@1445	156	// We don't generate specialized code for HeapWord-aligned source
never@1445	157	// arrays, so just use the code we've already generated
never@1445	158	StubRoutines::_arrayof_jbyte_disjoint_arraycopy =
never@1445	159	StubRoutines::_jbyte_disjoint_arraycopy;
never@1445	160	StubRoutines::_arrayof_jbyte_arraycopy =
never@1445	161	StubRoutines::_jbyte_arraycopy;
never@1445	162
never@1445	163	StubRoutines::_arrayof_jshort_disjoint_arraycopy =
never@1445	164	StubRoutines::_jshort_disjoint_arraycopy;
never@1445	165	StubRoutines::_arrayof_jshort_arraycopy =
never@1445	166	StubRoutines::_jshort_arraycopy;
never@1445	167
never@1445	168	StubRoutines::_arrayof_jint_disjoint_arraycopy =
never@1445	169	StubRoutines::_jint_disjoint_arraycopy;
never@1445	170	StubRoutines::_arrayof_jint_arraycopy =
never@1445	171	StubRoutines::_jint_arraycopy;
never@1445	172
never@1445	173	StubRoutines::_arrayof_jlong_disjoint_arraycopy =
never@1445	174	StubRoutines::_jlong_disjoint_arraycopy;
never@1445	175	StubRoutines::_arrayof_jlong_arraycopy =
never@1445	176	StubRoutines::_jlong_arraycopy;
never@1445	177
never@1445	178	StubRoutines::_arrayof_oop_disjoint_arraycopy =
never@1445	179	StubRoutines::_oop_disjoint_arraycopy;
never@1445	180	StubRoutines::_arrayof_oop_arraycopy =
never@1445	181	StubRoutines::_oop_arraycopy;
never@1445	182	}
never@1445	183
never@1445	184	void generate_initial() {
never@1445	185	// Generates all stubs and initializes the entry points
never@1445	186
never@1445	187	// entry points that exist in all platforms Note: This is code
never@1445	188	// that could be shared among different platforms - however the
never@1445	189	// benefit seems to be smaller than the disadvantage of having a
never@1445	190	// much more complicated generator structure. See also comment in
never@1445	191	// stubRoutines.hpp.
never@1445	192
never@1445	193	StubRoutines::_forward_exception_entry = ShouldNotCallThisStub();
never@1445	194	StubRoutines::_call_stub_entry = (address) call_stub;
never@1445	195	StubRoutines::_catch_exception_entry = ShouldNotCallThisStub();
never@1445	196
never@1445	197	// atomic calls
never@1445	198	StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub();
never@1445	199	StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub();
never@1445	200	StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub();
never@1445	201	StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub();
never@1445	202	StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub();
never@1445	203	StubRoutines::_atomic_add_entry = ShouldNotCallThisStub();
never@1445	204	StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub();
never@1445	205	StubRoutines::_fence_entry = ShouldNotCallThisStub();
never@1445	206
never@1445	207	// amd64 does this here, sparc does it in generate_all()
never@1445	208	StubRoutines::_handler_for_unsafe_access_entry =
never@1445	209	ShouldNotCallThisStub();
never@1445	210	}
never@1445	211
never@1445	212	void generate_all() {
never@1445	213	// Generates all stubs and initializes the entry points
never@1445	214
never@1445	215	// These entry points require SharedInfo::stack0 to be set up in
never@1445	216	// non-core builds and need to be relocatable, so they each
never@1445	217	// fabricate a RuntimeStub internally.
never@1445	218	StubRoutines::_throw_AbstractMethodError_entry =
never@1445	219	ShouldNotCallThisStub();
never@1445	220
never@1445	221	StubRoutines::_throw_NullPointerException_at_call_entry =
never@1445	222	ShouldNotCallThisStub();
never@1445	223
never@1445	224	StubRoutines::_throw_StackOverflowError_entry =
never@1445	225	ShouldNotCallThisStub();
never@1445	226
never@1445	227	// support for verify_oop (must happen after universe_init)
never@1445	228	StubRoutines::_verify_oop_subroutine_entry =
never@1445	229	ShouldNotCallThisStub();
never@1445	230
never@1445	231	// arraycopy stubs used by compilers
never@1445	232	generate_arraycopy_stubs();
never@1445	233	}
never@1445	234
never@1445	235	public:
never@1445	236	StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
never@1445	237	if (all) {
never@1445	238	generate_all();
never@1445	239	} else {
never@1445	240	generate_initial();
never@1445	241	}
never@1445	242	}
never@1445	243	};
never@1445	244
never@1445	245	void StubGenerator_generate(CodeBuffer* code, bool all) {
never@1445	246	StubGenerator g(code, all);
never@1445	247	}
never@1445	248
twisti@1814	249	EntryFrame *EntryFrame::build(const intptr_t* parameters,
never@1445	250	int parameter_words,
twisti@1814	251	JavaCallWrapper* call_wrapper,
twisti@1814	252	TRAPS) {
twisti@1814	253
twisti@1814	254	ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();
twisti@1814	255	stack->overflow_check(header_words + parameter_words, CHECK_NULL);
never@1445	256
never@1445	257	stack->push(0); // next_frame, filled in later
never@1445	258	intptr_t *fp = stack->sp();
never@1445	259	assert(fp - stack->sp() == next_frame_off, "should be");
never@1445	260
never@1445	261	stack->push(ENTRY_FRAME);
never@1445	262	assert(fp - stack->sp() == frame_type_off, "should be");
never@1445	263
never@1445	264	stack->push((intptr_t) call_wrapper);
never@1445	265	assert(fp - stack->sp() == call_wrapper_off, "should be");
never@1445	266
never@1445	267	for (int i = 0; i < parameter_words; i++)
never@1445	268	stack->push(parameters[i]);
never@1445	269
never@1445	270	return (EntryFrame *) fp;
never@1445	271	}