Mercurial > hg > graal-jvmci-8
view src/share/vm/classfile/classFileStream.cpp @ 7588:f9eb431c3efe
8006005: Fix constant pool index validation and alignment trap for method parameter reflection
Summary: This patch addresses an alignment trap due to the storage format of method parameters data in constMethod. It also adds code to validate constant pool indexes for method parameters data.
Reviewed-by: jrose, dholmes
Contributed-by: eric.mccorkle@oracle.com
author | coleenp |
---|---|
date | Mon, 14 Jan 2013 11:01:39 -0500 |
parents | ade95d680b42 |
children | de6a9e811145 |
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/* * Copyright (c) 1997, 2010, 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 "classfile/classFileStream.hpp" #include "classfile/vmSymbols.hpp" void ClassFileStream::truncated_file_error(TRAPS) { THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file"); } ClassFileStream::ClassFileStream(u1* buffer, int length, char* source) { _buffer_start = buffer; _buffer_end = buffer + length; _current = buffer; _source = source; _need_verify = false; } u1 ClassFileStream::get_u1(TRAPS) { if (_need_verify) { guarantee_more(1, CHECK_0); } else { assert(1 <= _buffer_end - _current, "buffer overflow"); } return *_current++; } u2 ClassFileStream::get_u2(TRAPS) { if (_need_verify) { guarantee_more(2, CHECK_0); } else { assert(2 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 2; return Bytes::get_Java_u2(tmp); } u4 ClassFileStream::get_u4(TRAPS) { if (_need_verify) { guarantee_more(4, CHECK_0); } else { assert(4 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 4; return Bytes::get_Java_u4(tmp); } u8 ClassFileStream::get_u8(TRAPS) { if (_need_verify) { guarantee_more(8, CHECK_0); } else { assert(8 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 8; return Bytes::get_Java_u8(tmp); } void ClassFileStream::skip_u1(int length, TRAPS) { if (_need_verify) { guarantee_more(length, CHECK); } _current += length; } void ClassFileStream::skip_u2(int length, TRAPS) { if (_need_verify) { guarantee_more(length * 2, CHECK); } _current += length * 2; } void ClassFileStream::skip_u4(int length, TRAPS) { if (_need_verify) { guarantee_more(length * 4, CHECK); } _current += length * 4; }