aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "asm/macroAssembler.hpp"
aoqi@0: #include "asm/macroAssembler.inline.hpp"
aoqi@0: #include "code/codeCache.hpp"
aoqi@0: #include "compiler/disassembler.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "prims/forte.hpp"
aoqi@0: #include "runtime/stubCodeGenerator.hpp"
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of StubCodeDesc
aoqi@0: 
aoqi@0: StubCodeDesc* StubCodeDesc::_list = NULL;
aoqi@0: int           StubCodeDesc::_count = 0;
aoqi@0: 
aoqi@0: 
aoqi@0: StubCodeDesc* StubCodeDesc::desc_for(address pc) {
aoqi@0:   StubCodeDesc* p = _list;
aoqi@0:   while (p != NULL && !p->contains(pc)) p = p->_next;
aoqi@0:   // p == NULL || p->contains(pc)
aoqi@0:   return p;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
aoqi@0:   StubCodeDesc* p = _list;
aoqi@0:   while (p != NULL && p->index() != index) p = p->_next;
aoqi@0:   return p;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: const char* StubCodeDesc::name_for(address pc) {
aoqi@0:   StubCodeDesc* p = desc_for(pc);
aoqi@0:   return p == NULL ? NULL : p->name();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void StubCodeDesc::print_on(outputStream* st) const {
aoqi@0:   st->print("%s", group());
aoqi@0:   st->print("::");
aoqi@0:   st->print("%s", name());
aoqi@0:   st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", p2i(begin()), p2i(end()), size_in_bytes());
aoqi@0: }
aoqi@0: 
aoqi@0: // Implementation of StubCodeGenerator
aoqi@0: 
aoqi@0: StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) {
aoqi@0:   _masm = new MacroAssembler(code);
aoqi@0:   _first_stub = _last_stub = NULL;
aoqi@0:   _print_code = print_code;
aoqi@0: }
aoqi@0: 
aoqi@0: extern "C" {
aoqi@0:   static int compare_cdesc(const void* void_a, const void* void_b) {
aoqi@0:     int ai = (*((StubCodeDesc**) void_a))->index();
aoqi@0:     int bi = (*((StubCodeDesc**) void_b))->index();
aoqi@0:     return ai - bi;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: StubCodeGenerator::~StubCodeGenerator() {
aoqi@0:   if (PrintStubCode || _print_code) {
aoqi@0:     CodeBuffer* cbuf = _masm->code();
aoqi@0:     CodeBlob*   blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
aoqi@0:     if (blob != NULL) {
aoqi@0:       blob->set_strings(cbuf->strings());
aoqi@0:     }
aoqi@0:     bool saw_first = false;
aoqi@0:     StubCodeDesc* toprint[1000];
aoqi@0:     int toprint_len = 0;
aoqi@0:     for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
aoqi@0:       toprint[toprint_len++] = cdesc;
aoqi@0:       if (cdesc == _first_stub) { saw_first = true; break; }
aoqi@0:     }
aoqi@0:     assert(saw_first, "must get both first & last");
aoqi@0:     // Print in reverse order:
aoqi@0:     qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
aoqi@0:     for (int i = 0; i < toprint_len; i++) {
aoqi@0:       StubCodeDesc* cdesc = toprint[i];
aoqi@0:       cdesc->print();
aoqi@0:       tty->cr();
aoqi@0:       Disassembler::decode(cdesc->begin(), cdesc->end());
aoqi@0:       tty->cr();
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
aoqi@0:   // default implementation - do nothing
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
aoqi@0:   // default implementation - record the cdesc
aoqi@0:   if (_first_stub == NULL)  _first_stub = cdesc;
aoqi@0:   _last_stub = cdesc;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Implementation of CodeMark
aoqi@0: 
aoqi@0: StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
aoqi@0:   _cgen  = cgen;
aoqi@0:   _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
aoqi@0:   _cgen->stub_prolog(_cdesc);
aoqi@0:   // define the stub's beginning (= entry point) to be after the prolog:
aoqi@0:   _cdesc->set_begin(_cgen->assembler()->pc());
aoqi@0: }
aoqi@0: 
aoqi@0: StubCodeMark::~StubCodeMark() {
aoqi@0:   _cgen->assembler()->flush();
aoqi@0:   _cdesc->set_end(_cgen->assembler()->pc());
aoqi@0:   assert(StubCodeDesc::_list == _cdesc, "expected order on list");
aoqi@0:   _cgen->stub_epilog(_cdesc);
aoqi@0:   Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
aoqi@0: 
aoqi@0:   if (JvmtiExport::should_post_dynamic_code_generated()) {
aoqi@0:     JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
aoqi@0:   }
aoqi@0: }