| /* |
| * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/macroAssembler.hpp" |
| #include "asm/macroAssembler.inline.hpp" |
| #include "code/codeCache.hpp" |
| #include "compiler/disassembler.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "prims/forte.hpp" |
| #include "runtime/stubCodeGenerator.hpp" |
| |
| |
| // Implementation of StubCodeDesc |
| |
| StubCodeDesc* StubCodeDesc::_list = NULL; |
| bool StubCodeDesc::_frozen = false; |
| |
| StubCodeDesc* StubCodeDesc::desc_for(address pc) { |
| StubCodeDesc* p = _list; |
| while (p != NULL && !p->contains(pc)) { |
| p = p->_next; |
| } |
| return p; |
| } |
| |
| const char* StubCodeDesc::name_for(address pc) { |
| StubCodeDesc* p = desc_for(pc); |
| return p == NULL ? NULL : p->name(); |
| } |
| |
| |
| void StubCodeDesc::freeze() { |
| assert(!_frozen, "repeated freeze operation"); |
| _frozen = true; |
| } |
| |
| void StubCodeDesc::print_on(outputStream* st) const { |
| st->print("%s", group()); |
| st->print("::"); |
| st->print("%s", name()); |
| st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", p2i(begin()), p2i(end()), size_in_bytes()); |
| } |
| |
| // Implementation of StubCodeGenerator |
| |
| StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) { |
| _masm = new MacroAssembler(code ); |
| _print_code = PrintStubCode || print_code; |
| } |
| |
| StubCodeGenerator::~StubCodeGenerator() { |
| if (_print_code) { |
| CodeBuffer* cbuf = _masm->code(); |
| CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start()); |
| if (blob != NULL) { |
| blob->set_strings(cbuf->strings()); |
| } |
| } |
| } |
| |
| void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) { |
| // default implementation - do nothing |
| } |
| |
| void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) { |
| if (_print_code) { |
| cdesc->print(); |
| tty->cr(); |
| Disassembler::decode(cdesc->begin(), cdesc->end()); |
| tty->cr(); |
| } |
| } |
| |
| |
| // Implementation of CodeMark |
| |
| StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) { |
| _cgen = cgen; |
| _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc()); |
| _cgen->stub_prolog(_cdesc); |
| // define the stub's beginning (= entry point) to be after the prolog: |
| _cdesc->set_begin(_cgen->assembler()->pc()); |
| } |
| |
| StubCodeMark::~StubCodeMark() { |
| _cgen->assembler()->flush(); |
| _cdesc->set_end(_cgen->assembler()->pc()); |
| assert(StubCodeDesc::_list == _cdesc, "expected order on list"); |
| _cgen->stub_epilog(_cdesc); |
| Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end()); |
| |
| if (JvmtiExport::should_post_dynamic_code_generated()) { |
| JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end()); |
| } |
| } |