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src/share/vm/runtime/stubCodeGenerator.cpp@f90c822e73f8 (annotated)

src/share/vm/runtime/stubCodeGenerator.cpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "asm/macroAssembler.hpp"
aoqi@0	27	#include "asm/macroAssembler.inline.hpp"
aoqi@0	28	#include "code/codeCache.hpp"
aoqi@0	29	#include "compiler/disassembler.hpp"
aoqi@0	30	#include "oops/oop.inline.hpp"
aoqi@0	31	#include "prims/forte.hpp"
aoqi@0	32	#include "runtime/stubCodeGenerator.hpp"
aoqi@0	33
aoqi@0	34
aoqi@0	35	// Implementation of StubCodeDesc
aoqi@0	36
aoqi@0	37	StubCodeDesc* StubCodeDesc::_list = NULL;
aoqi@0	38	int StubCodeDesc::_count = 0;
aoqi@0	39
aoqi@0	40
aoqi@0	41	StubCodeDesc* StubCodeDesc::desc_for(address pc) {
aoqi@0	42	StubCodeDesc* p = _list;
aoqi@0	43	while (p != NULL && !p->contains(pc)) p = p->_next;
aoqi@0	44	// p == NULL || p->contains(pc)
aoqi@0	45	return p;
aoqi@0	46	}
aoqi@0	47
aoqi@0	48
aoqi@0	49	StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
aoqi@0	50	StubCodeDesc* p = _list;
aoqi@0	51	while (p != NULL && p->index() != index) p = p->_next;
aoqi@0	52	return p;
aoqi@0	53	}
aoqi@0	54
aoqi@0	55
aoqi@0	56	const char* StubCodeDesc::name_for(address pc) {
aoqi@0	57	StubCodeDesc* p = desc_for(pc);
aoqi@0	58	return p == NULL ? NULL : p->name();
aoqi@0	59	}
aoqi@0	60
aoqi@0	61
aoqi@0	62	void StubCodeDesc::print_on(outputStream* st) const {
aoqi@0	63	st->print("%s", group());
aoqi@0	64	st->print("::");
aoqi@0	65	st->print("%s", name());
aoqi@0	66	st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", p2i(begin()), p2i(end()), size_in_bytes());
aoqi@0	67	}
aoqi@0	68
aoqi@0	69	// Implementation of StubCodeGenerator
aoqi@0	70
aoqi@0	71	StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) {
aoqi@0	72	_masm = new MacroAssembler(code);
aoqi@0	73	_first_stub = _last_stub = NULL;
aoqi@0	74	_print_code = print_code;
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	extern "C" {
aoqi@0	78	static int compare_cdesc(const void* void_a, const void* void_b) {
aoqi@0	79	int ai = (*((StubCodeDesc**) void_a))->index();
aoqi@0	80	int bi = (*((StubCodeDesc**) void_b))->index();
aoqi@0	81	return ai - bi;
aoqi@0	82	}
aoqi@0	83	}
aoqi@0	84
aoqi@0	85	StubCodeGenerator::~StubCodeGenerator() {
aoqi@0	86	if (PrintStubCode || _print_code) {
aoqi@0	87	CodeBuffer* cbuf = _masm->code();
aoqi@0	88	CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
aoqi@0	89	if (blob != NULL) {
aoqi@0	90	blob->set_strings(cbuf->strings());
aoqi@0	91	}
aoqi@0	92	bool saw_first = false;
aoqi@0	93	StubCodeDesc* toprint[1000];
aoqi@0	94	int toprint_len = 0;
aoqi@0	95	for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
aoqi@0	96	toprint[toprint_len++] = cdesc;
aoqi@0	97	if (cdesc == _first_stub) { saw_first = true; break; }
aoqi@0	98	}
aoqi@0	99	assert(saw_first, "must get both first & last");
aoqi@0	100	// Print in reverse order:
aoqi@0	101	qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
aoqi@0	102	for (int i = 0; i < toprint_len; i++) {
aoqi@0	103	StubCodeDesc* cdesc = toprint[i];
aoqi@0	104	cdesc->print();
aoqi@0	105	tty->cr();
aoqi@0	106	Disassembler::decode(cdesc->begin(), cdesc->end());
aoqi@0	107	tty->cr();
aoqi@0	108	}
aoqi@0	109	}
aoqi@0	110	}
aoqi@0	111
aoqi@0	112
aoqi@0	113	void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
aoqi@0	114	// default implementation - do nothing
aoqi@0	115	}
aoqi@0	116
aoqi@0	117
aoqi@0	118	void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
aoqi@0	119	// default implementation - record the cdesc
aoqi@0	120	if (_first_stub == NULL) _first_stub = cdesc;
aoqi@0	121	_last_stub = cdesc;
aoqi@0	122	}
aoqi@0	123
aoqi@0	124
aoqi@0	125	// Implementation of CodeMark
aoqi@0	126
aoqi@0	127	StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
aoqi@0	128	_cgen = cgen;
aoqi@0	129	_cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
aoqi@0	130	_cgen->stub_prolog(_cdesc);
aoqi@0	131	// define the stub's beginning (= entry point) to be after the prolog:
aoqi@0	132	_cdesc->set_begin(_cgen->assembler()->pc());
aoqi@0	133	}
aoqi@0	134
aoqi@0	135	StubCodeMark::~StubCodeMark() {
aoqi@0	136	_cgen->assembler()->flush();
aoqi@0	137	_cdesc->set_end(_cgen->assembler()->pc());
aoqi@0	138	assert(StubCodeDesc::_list == _cdesc, "expected order on list");
aoqi@0	139	_cgen->stub_epilog(_cdesc);
aoqi@0	140	Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
aoqi@0	141
aoqi@0	142	if (JvmtiExport::should_post_dynamic_code_generated()) {
aoqi@0	143	JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
aoqi@0	144	}
aoqi@0	145	}