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src/share/vm/runtime/stubCodeGenerator.cpp@f47fa50d9b9c (annotated)

src/share/vm/runtime/stubCodeGenerator.cpp

Fri, 28 Mar 2014 10:12:48 -0700

author

vlivanov

date

Fri, 28 Mar 2014 10:12:48 -0700

changeset 6527

f47fa50d9b9c

parent 6198

55fb97c4c58d

child 6680

78bbf4d43a14

permissions

-rw-r--r--

8035887: VM crashes trying to force inlining the recursive call
Reviewed-by: kvn, twisti

duke@435	1	/*
mikael@6198	2	* Copyright (c) 1997, 2013, 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	#include "precompiled.hpp"
twisti@4318	26	#include "asm/macroAssembler.hpp"
twisti@4318	27	#include "asm/macroAssembler.inline.hpp"
twisti@4318	28	#include "code/codeCache.hpp"
stefank@2314	29	#include "compiler/disassembler.hpp"
stefank@2314	30	#include "oops/oop.inline.hpp"
stefank@2314	31	#include "prims/forte.hpp"
stefank@2314	32	#include "runtime/stubCodeGenerator.hpp"
duke@435	33
duke@435	34
duke@435	35	// Implementation of StubCodeDesc
duke@435	36
duke@435	37	StubCodeDesc* StubCodeDesc::_list = NULL;
duke@435	38	int StubCodeDesc::_count = 0;
duke@435	39
duke@435	40
duke@435	41	StubCodeDesc* StubCodeDesc::desc_for(address pc) {
duke@435	42	StubCodeDesc* p = _list;
duke@435	43	while (p != NULL && !p->contains(pc)) p = p->_next;
duke@435	44	// p == NULL || p->contains(pc)
duke@435	45	return p;
duke@435	46	}
duke@435	47
duke@435	48
duke@435	49	StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
duke@435	50	StubCodeDesc* p = _list;
duke@435	51	while (p != NULL && p->index() != index) p = p->_next;
duke@435	52	return p;
duke@435	53	}
duke@435	54
duke@435	55
duke@435	56	const char* StubCodeDesc::name_for(address pc) {
duke@435	57	StubCodeDesc* p = desc_for(pc);
duke@435	58	return p == NULL ? NULL : p->name();
duke@435	59	}
duke@435	60
duke@435	61
bobv@2036	62	void StubCodeDesc::print_on(outputStream* st) const {
bobv@2036	63	st->print(group());
bobv@2036	64	st->print("::");
bobv@2036	65	st->print(name());
bobv@2036	66	st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());
duke@435	67	}
duke@435	68
duke@435	69	// Implementation of StubCodeGenerator
duke@435	70
never@2954	71	StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) {
duke@435	72	_masm = new MacroAssembler(code);
duke@435	73	_first_stub = _last_stub = NULL;
never@2954	74	_print_code = print_code;
duke@435	75	}
duke@435	76
duke@435	77	extern "C" {
duke@435	78	static int compare_cdesc(const void* void_a, const void* void_b) {
duke@435	79	int ai = (*((StubCodeDesc**) void_a))->index();
duke@435	80	int bi = (*((StubCodeDesc**) void_b))->index();
duke@435	81	return ai - bi;
duke@435	82	}
duke@435	83	}
duke@435	84
duke@435	85	StubCodeGenerator::~StubCodeGenerator() {
never@2954	86	if (PrintStubCode || _print_code) {
duke@435	87	CodeBuffer* cbuf = _masm->code();
duke@435	88	CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
duke@435	89	if (blob != NULL) {
roland@4767	90	blob->set_strings(cbuf->strings());
duke@435	91	}
duke@435	92	bool saw_first = false;
duke@435	93	StubCodeDesc* toprint[1000];
duke@435	94	int toprint_len = 0;
duke@435	95	for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
duke@435	96	toprint[toprint_len++] = cdesc;
duke@435	97	if (cdesc == _first_stub) { saw_first = true; break; }
duke@435	98	}
duke@435	99	assert(saw_first, "must get both first & last");
duke@435	100	// Print in reverse order:
duke@435	101	qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
duke@435	102	for (int i = 0; i < toprint_len; i++) {
duke@435	103	StubCodeDesc* cdesc = toprint[i];
duke@435	104	cdesc->print();
duke@435	105	tty->cr();
duke@435	106	Disassembler::decode(cdesc->begin(), cdesc->end());
duke@435	107	tty->cr();
duke@435	108	}
duke@435	109	}
duke@435	110	}
duke@435	111
duke@435	112
duke@435	113	void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
duke@435	114	// default implementation - do nothing
duke@435	115	}
duke@435	116
duke@435	117
duke@435	118	void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
duke@435	119	// default implementation - record the cdesc
duke@435	120	if (_first_stub == NULL) _first_stub = cdesc;
duke@435	121	_last_stub = cdesc;
duke@435	122	}
duke@435	123
duke@435	124
duke@435	125	// Implementation of CodeMark
duke@435	126
duke@435	127	StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
duke@435	128	_cgen = cgen;
duke@435	129	_cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
duke@435	130	_cgen->stub_prolog(_cdesc);
duke@435	131	// define the stub's beginning (= entry point) to be after the prolog:
duke@435	132	_cdesc->set_begin(_cgen->assembler()->pc());
duke@435	133	}
duke@435	134
duke@435	135	StubCodeMark::~StubCodeMark() {
duke@435	136	_cgen->assembler()->flush();
duke@435	137	_cdesc->set_end(_cgen->assembler()->pc());
duke@435	138	assert(StubCodeDesc::_list == _cdesc, "expected order on list");
duke@435	139	_cgen->stub_epilog(_cdesc);
duke@435	140	Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
duke@435	141
duke@435	142	if (JvmtiExport::should_post_dynamic_code_generated()) {
duke@435	143	JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
duke@435	144	}
duke@435	145	}