| /* |
| * Copyright (c) 2017, 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. |
| */ |
| |
| package jdk.tools.jaotc.binformat.elf; |
| |
| import java.nio.ByteBuffer; |
| |
| import jdk.tools.jaotc.binformat.elf.Elf.Elf64_Ehdr; |
| import jdk.tools.jaotc.binformat.elf.Elf.Elf64_Shdr; |
| import jdk.tools.jaotc.binformat.elf.ElfTargetInfo; |
| import jdk.tools.jaotc.binformat.elf.ElfByteBuffer; |
| |
| final class ElfHeader { |
| private final ByteBuffer header; |
| |
| ElfHeader() { |
| header = ElfByteBuffer.allocate(Elf64_Ehdr.totalsize); |
| |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_MAG0, Elf64_Ehdr.ELFMAG0); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_MAG1, Elf64_Ehdr.ELFMAG1); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_MAG2, Elf64_Ehdr.ELFMAG2); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_MAG3, Elf64_Ehdr.ELFMAG3); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_CLASS, Elf64_Ehdr.ELFCLASS64); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_DATA, Elf64_Ehdr.ELFDATA2LSB); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_VERSION, Elf64_Ehdr.EV_CURRENT); |
| header.put(Elf64_Ehdr.e_ident.off + Elf64_Ehdr.EI_OSABI, Elf64_Ehdr.ELFOSABI_NONE); |
| |
| header.putChar(Elf64_Ehdr.e_type.off, Elf64_Ehdr.ET_REL); |
| header.putChar(Elf64_Ehdr.e_machine.off, ElfTargetInfo.getElfArch()); |
| header.putInt(Elf64_Ehdr.e_version.off, Elf64_Ehdr.EV_CURRENT); |
| header.putChar(Elf64_Ehdr.e_ehsize.off, (char) Elf64_Ehdr.totalsize); |
| header.putChar(Elf64_Ehdr.e_shentsize.off, (char) Elf64_Shdr.totalsize); |
| |
| } |
| |
| // Update header with file offset of first section |
| void setSectionOff(int offset) { |
| header.putLong(Elf64_Ehdr.e_shoff.off, offset); |
| } |
| |
| // Update header with the number of total sections |
| void setSectionNum(int count) { |
| header.putChar(Elf64_Ehdr.e_shnum.off, (char) count); |
| } |
| |
| // Update header with the section index containing the |
| // string table for section names |
| void setSectionStrNdx(int index) { |
| header.putChar(Elf64_Ehdr.e_shstrndx.off, (char) index); |
| } |
| |
| byte[] getArray() { |
| return header.array(); |
| } |
| } |