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src/share/vm/runtime/stubCodeGenerator.cpp@6c97c830fb6f (annotated)

src/share/vm/runtime/stubCodeGenerator.cpp

Sat, 09 Apr 2011 21:16:12 -0700

author

jrose

date

Sat, 09 Apr 2011 21:16:12 -0700

changeset 2750

6c97c830fb6f

parent 2708

1d1603768966

child 2954

f8c9417e3571

permissions

-rw-r--r--

Merge

duke@435	1	/*
trims@2708	2	* Copyright (c) 1997, 2011, 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"
stefank@2314	26	#include "compiler/disassembler.hpp"
stefank@2314	27	#include "oops/oop.inline.hpp"
stefank@2314	28	#include "prims/forte.hpp"
stefank@2314	29	#include "runtime/stubCodeGenerator.hpp"
stefank@2314	30	#ifdef TARGET_ARCH_x86
stefank@2314	31	# include "assembler_x86.inline.hpp"
stefank@2314	32	#endif
stefank@2314	33	#ifdef TARGET_ARCH_sparc
stefank@2314	34	# include "assembler_sparc.inline.hpp"
stefank@2314	35	#endif
stefank@2314	36	#ifdef TARGET_ARCH_zero
stefank@2314	37	# include "assembler_zero.inline.hpp"
stefank@2314	38	#endif
bobv@2508	39	#ifdef TARGET_ARCH_arm
bobv@2508	40	# include "assembler_arm.inline.hpp"
bobv@2508	41	#endif
bobv@2508	42	#ifdef TARGET_ARCH_ppc
bobv@2508	43	# include "assembler_ppc.inline.hpp"
bobv@2508	44	#endif
duke@435	45
duke@435	46
duke@435	47	// Implementation of StubCodeDesc
duke@435	48
duke@435	49	StubCodeDesc* StubCodeDesc::_list = NULL;
duke@435	50	int StubCodeDesc::_count = 0;
duke@435	51
duke@435	52
duke@435	53	StubCodeDesc* StubCodeDesc::desc_for(address pc) {
duke@435	54	StubCodeDesc* p = _list;
duke@435	55	while (p != NULL && !p->contains(pc)) p = p->_next;
duke@435	56	// p == NULL || p->contains(pc)
duke@435	57	return p;
duke@435	58	}
duke@435	59
duke@435	60
duke@435	61	StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
duke@435	62	StubCodeDesc* p = _list;
duke@435	63	while (p != NULL && p->index() != index) p = p->_next;
duke@435	64	return p;
duke@435	65	}
duke@435	66
duke@435	67
duke@435	68	const char* StubCodeDesc::name_for(address pc) {
duke@435	69	StubCodeDesc* p = desc_for(pc);
duke@435	70	return p == NULL ? NULL : p->name();
duke@435	71	}
duke@435	72
duke@435	73
bobv@2036	74	void StubCodeDesc::print_on(outputStream* st) const {
bobv@2036	75	st->print(group());
bobv@2036	76	st->print("::");
bobv@2036	77	st->print(name());
bobv@2036	78	st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());
duke@435	79	}
duke@435	80
duke@435	81	// Implementation of StubCodeGenerator
duke@435	82
duke@435	83	StubCodeGenerator::StubCodeGenerator(CodeBuffer* code) {
duke@435	84	_masm = new MacroAssembler(code);
duke@435	85	_first_stub = _last_stub = NULL;
duke@435	86	}
duke@435	87
duke@435	88	extern "C" {
duke@435	89	static int compare_cdesc(const void* void_a, const void* void_b) {
duke@435	90	int ai = (*((StubCodeDesc**) void_a))->index();
duke@435	91	int bi = (*((StubCodeDesc**) void_b))->index();
duke@435	92	return ai - bi;
duke@435	93	}
duke@435	94	}
duke@435	95
duke@435	96	StubCodeGenerator::~StubCodeGenerator() {
duke@435	97	if (PrintStubCode) {
duke@435	98	CodeBuffer* cbuf = _masm->code();
duke@435	99	CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
duke@435	100	if (blob != NULL) {
duke@435	101	blob->set_comments(cbuf->comments());
duke@435	102	}
duke@435	103	bool saw_first = false;
duke@435	104	StubCodeDesc* toprint[1000];
duke@435	105	int toprint_len = 0;
duke@435	106	for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
duke@435	107	toprint[toprint_len++] = cdesc;
duke@435	108	if (cdesc == _first_stub) { saw_first = true; break; }
duke@435	109	}
duke@435	110	assert(saw_first, "must get both first & last");
duke@435	111	// Print in reverse order:
duke@435	112	qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
duke@435	113	for (int i = 0; i < toprint_len; i++) {
duke@435	114	StubCodeDesc* cdesc = toprint[i];
duke@435	115	cdesc->print();
duke@435	116	tty->cr();
duke@435	117	Disassembler::decode(cdesc->begin(), cdesc->end());
duke@435	118	tty->cr();
duke@435	119	}
duke@435	120	}
duke@435	121	}
duke@435	122
duke@435	123
duke@435	124	void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
duke@435	125	// default implementation - do nothing
duke@435	126	}
duke@435	127
duke@435	128
duke@435	129	void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
duke@435	130	// default implementation - record the cdesc
duke@435	131	if (_first_stub == NULL) _first_stub = cdesc;
duke@435	132	_last_stub = cdesc;
duke@435	133	}
duke@435	134
duke@435	135
duke@435	136	// Implementation of CodeMark
duke@435	137
duke@435	138	StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
duke@435	139	_cgen = cgen;
duke@435	140	_cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
duke@435	141	_cgen->stub_prolog(_cdesc);
duke@435	142	// define the stub's beginning (= entry point) to be after the prolog:
duke@435	143	_cdesc->set_begin(_cgen->assembler()->pc());
duke@435	144	}
duke@435	145
duke@435	146	StubCodeMark::~StubCodeMark() {
duke@435	147	_cgen->assembler()->flush();
duke@435	148	_cdesc->set_end(_cgen->assembler()->pc());
duke@435	149	assert(StubCodeDesc::_list == _cdesc, "expected order on list");
duke@435	150	_cgen->stub_epilog(_cdesc);
duke@435	151	Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
duke@435	152
duke@435	153	if (JvmtiExport::should_post_dynamic_code_generated()) {
duke@435	154	JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
duke@435	155	}
duke@435	156	}