diff options
Diffstat (limited to 'core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java')
| -rw-r--r-- | core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java | 911 |
1 files changed, 0 insertions, 911 deletions
diff --git a/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java b/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java deleted file mode 100644 index b594aadb283..00000000000 --- a/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java +++ /dev/null @@ -1,911 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2004 QNX Software Systems and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - * - * Contributors: - * QNX Software Systems - Initial API and implementation - *******************************************************************************/ -package org.eclipse.cdt.utils.elf; - - -import java.io.EOFException; -import java.io.IOException; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Comparator; - -import org.eclipse.cdt.core.CCorePlugin; - -// test checkin -public class Elf { - protected ERandomAccessFile efile; - - protected ELFhdr ehdr; - protected Section[] sections; - protected String file; - protected byte[] section_strtab; - - private int syms = 0; - private Symbol[] symbols; - private Symbol[] symtab_symbols; - private Section symtab_sym; - private Symbol[] dynsym_symbols; - private Section dynsym_sym; - - protected String EMPTY_STRING = ""; //$NON-NLS-1$ - - - public class ELFhdr { - /* e_ident offsets */ - public final static int EI_MAG0 = 0; - public final static int EI_MAG1 = 1; - public final static int EI_MAG2 = 2; - public final static int EI_MAG3 = 3; - public final static int EI_CLASS = 4; - public final static int EI_DATA = 5; - public final static int EI_VERSION = 6; - public final static int EI_PAD = 7; - public final static int EI_NDENT = 16; - - /* e_ident[EI_CLASS] */ - public final static int ELFCLASSNONE = 0; - public final static int ELCLASS32 = 1; - public final static int ELFCLASS64 = 2; - - /* e_ident[EI_DATA] */ - public final static int ELFDATANONE = 0; - public final static int ELFDATA2LSB = 1; - public final static int ELFDATA2MSB = 2; - - /* values of e_type */ - public final static int ET_NONE = 0; - public final static int ET_REL = 1; - public final static int ET_EXEC = 2; - public final static int ET_DYN = 3; - public final static int ET_CORE = 4; - public final static int ET_LOPROC = 0xff00; - public final static int ET_HIPROC = 0xffff; - - /* values of e_machine */ - public final static int EM_NONE = 0; - public final static int EM_M32 = 1; - public final static int EM_SPARC = 2; - public final static int EM_386 = 3; - public final static int EM_68K = 4; - public final static int EM_88K = 5; - public final static int EM_486 = 6; - public final static int EM_860 = 7; - public final static int EM_MIPS = 8; - public final static int EM_MIPS_RS3_LE = 10; - public final static int EM_RS6000 = 11; - public final static int EM_PARISC = 15; - public final static int EM_nCUBE = 16; - public final static int EM_VPP550 = 17; - public final static int EM_SPARC32PLUS = 18; - public final static int EM_PPC = 20; - public final static int EM_PPC64 = 21; - public final static int EM_ARM = 40; - public final static int EM_SH = 42; - public final static int EM_SPARCV9 = 43; - public final static int EM_H8_300 = 46; - public final static int EM_H8_300H = 47; - public final static int EM_IA_64 = 50; - public final static int EM_AVR = 83; - public final static int EM_FR30 = 84; /* Fujitsu FR30 */ - public final static int EM_V850 = 87; - public final static int EM_M32R = 88; - public final static int EM_MN10300 = 89; - public final static int EM_MN10200 = 90; - public final static int EM_MSP430 = 105; - public final static int EM_EXCESS = 111; - public final static int EM_NIOSII = 113; - public final static int EM_NIOS = 0xFEBB; - public final static int EM_CYGNUS_POWERPC = 0x9025; - public final static int EM_CYGNUS_M32R = 0x9041; - public final static int EM_CYGNUS_V850 = 0x9080; - public final static int EM_CYGNUS_MN10200 = 0xdead; - public final static int EM_CYGNUS_MN10300 = 0xbeef; - public final static int EM_CYGNUS_FR30 = 0x3330; - public final static int EM_XSTORMY16 = 0xad45; - public final static int EM_CYGNUS_FRV = 0x5441; - public final static int EM_IQ2000 = 0xFEBA; - - public byte e_ident[] = new byte[EI_NDENT]; - public int e_type; /* file type (Elf32_Half) */ - public int e_machine; /* machine type (Elf32_Half) */ - public long e_version; /* version number (Elf32_Word) */ - public long e_entry; /* entry point (Elf32_Addr)*/ - public long e_phoff; /* Program hdr offset (Elf32_Off)*/ - public long e_shoff; /* Section hdr offset (Elf32_Off)*/ - public long e_flags; /* Processor flags (Elf32_Word)*/ - public short e_ehsize; /* sizeof ehdr (Elf32_Half)*/ - public short e_phentsize; /* Program header entry size (Elf32_Half)*/ - public short e_phnum; /* Number of program headers (Elf32_Half)*/ - public short e_shentsize; /* Section header entry size (Elf32_Half)*/ - public short e_shnum; /* Number of section headers (Elf32_Half)*/ - public short e_shstrndx; /* String table index (Elf32_Half)*/ - - protected ELFhdr() throws IOException { - efile.seek(0); - efile.readFully(e_ident); - if ( e_ident[ELFhdr.EI_MAG0] != 0x7f || e_ident[ELFhdr.EI_MAG1] != 'E' || - e_ident[ELFhdr.EI_MAG2] != 'L' || e_ident[ELFhdr.EI_MAG3] != 'F' ) - throw new IOException(CCorePlugin.getResourceString("Util.exception.notELF")); //$NON-NLS-1$ - efile.setEndian(e_ident[ELFhdr.EI_DATA] == ELFhdr.ELFDATA2LSB); - e_type = efile.readShortE(); - e_machine = efile.readShortE(); - e_version = efile.readIntE(); - e_entry = efile.readIntE(); - e_phoff = efile.readIntE(); - e_shoff = efile.readIntE(); - e_flags = efile.readIntE(); - e_ehsize = efile.readShortE(); - e_phentsize = efile.readShortE(); - e_phnum = efile.readShortE(); - e_shentsize = efile.readShortE(); - e_shnum = efile.readShortE(); - e_shstrndx = efile.readShortE(); - } - - protected ELFhdr(byte [] bytes) throws IOException { - if(bytes.length <= e_ident.length) { - throw new EOFException(CCorePlugin.getResourceString("Util.exception.notELF")); //$NON-NLS-1$ - } - System.arraycopy(bytes, 0, e_ident, 0, e_ident.length); - if ( e_ident[ELFhdr.EI_MAG0] != 0x7f || e_ident[ELFhdr.EI_MAG1] != 'E' || - e_ident[ELFhdr.EI_MAG2] != 'L' || e_ident[ELFhdr.EI_MAG3] != 'F' ) - throw new IOException(CCorePlugin.getResourceString("Util.exception.notELF")); //$NON-NLS-1$ - boolean isle = (e_ident[ELFhdr.EI_DATA] == ELFhdr.ELFDATA2LSB); - int offset = e_ident.length; - e_type = makeShort(bytes, offset, isle); offset += 2; - e_machine = makeShort(bytes, offset, isle); offset += 2; - e_version = makeInt(bytes, offset, isle); offset += 4; - e_entry = makeInt(bytes, offset, isle); offset += 4; - e_phoff = makeInt(bytes, offset, isle); offset += 4; - e_shoff = makeInt(bytes, offset, isle); offset += 4; - e_flags = makeInt(bytes, offset, isle); offset += 4; - e_ehsize = makeShort(bytes, offset, isle); offset += 2; - e_phentsize = makeShort(bytes, offset, isle); offset += 2; - e_phnum = makeShort(bytes, offset, isle); offset += 2; - e_shentsize = makeShort(bytes, offset, isle); offset += 2; - e_shnum = makeShort(bytes, offset, isle); offset += 2; - e_shstrndx = makeShort(bytes, offset, isle); offset += 2; - } - - private final short makeShort(byte [] val, int offset, boolean isle) throws IOException { - if (val.length < offset + 2) - throw new IOException(); - if ( isle ) { - return (short)((val[offset + 1] << 8) + val[offset + 0]); - } - return (short)((val[offset + 0] << 8) + val[offset + 1]); - } - - private final long makeInt(byte [] val, int offset, boolean isle) throws IOException - { - if (val.length < offset + 4) - throw new IOException(); - if ( isle ) { - return ((val[offset + 3] << 24) + (val[offset + 2] << 16) + (val[offset + 1] << 8) + val[offset + 0]); - } - return ((val[offset + 0] << 24) + (val[offset + 1] << 16) + (val[offset + 2] << 8) + val[offset + 3]); - } - - - } - - public class Section { - /* sh_type */ - public final static int SHT_NULL = 0; - public final static int SHT_PROGBITS = 1; - public final static int SHT_SYMTAB = 2; - public final static int SHT_STRTAB = 3; - public final static int SHT_RELA = 4; - public final static int SHT_HASH = 5; - public final static int SHT_DYNAMIC = 6; - public final static int SHT_NOTE = 7; - public final static int SHT_NOBITS = 8; - public final static int SHT_REL = 9; - public final static int SHT_SHLIB = 10; - public final static int SHT_DYNSYM = 11; - - public final static int SHT_LOPROC = 0x70000000; - - /* sh_flags */ - public final static int SHF_WRITE = 1; - public final static int SHF_ALLOC = 2; - public final static int SHF_EXECINTR = 4; - - public long sh_name; - public long sh_type; - public long sh_flags; - public long sh_addr; - public long sh_offset; - public long sh_size; - public long sh_link; - public long sh_info; - public long sh_addralign; - public long sh_entsize; - - public byte[] loadSectionData() throws IOException { - byte[] data = new byte[(int)sh_size]; - efile.seek( sh_offset ); - efile.read( data ); - return data; - } - - public String toString() { - try { - if ( section_strtab == null ) { - if ( ehdr.e_shstrndx > sections.length || ehdr.e_shstrndx < 0) - return EMPTY_STRING; - int size = (int)sections[ehdr.e_shstrndx].sh_size; - if ( size <= 0 || size > efile.length() ) - return EMPTY_STRING; - section_strtab = new byte[size]; - efile.seek(sections[ehdr.e_shstrndx].sh_offset); - efile.read(section_strtab); - } - int str_size = 0; - if ( sh_name > section_strtab.length) { - return EMPTY_STRING; - } - while( section_strtab[(int)sh_name + str_size] != 0) - str_size++; - return new String(section_strtab, (int)sh_name, str_size); - } catch (IOException e) { - return EMPTY_STRING; - } - } - } - - protected String string_from_elf_section(Elf.Section section, int index) throws IOException { - StringBuffer str = new StringBuffer(); - byte tmp; - if ( index > section.sh_size ) { - return EMPTY_STRING; - } - efile.seek(section.sh_offset + index); - while( true ) { - tmp = efile.readByte(); - if ( tmp == 0 ) - break; - str.append((char)tmp); - } - return str.toString(); - } - - public class Symbol implements Comparable { - /* Symbol bindings */ - public final static int STB_LOCAL = 0; - public final static int STB_GLOBAL = 1; - public final static int STB_WEAK = 2; - /* Symbol type */ - public final static int STT_NOTYPE = 0; - public final static int STT_OBJECT = 1; - public final static int STT_FUNC = 2; - public final static int STT_SECTION = 3; - public final static int STT_FILE = 4; - /* Special Indexes */ - public final static int SHN_UNDEF = 0; - public final static int SHN_LORESERVE = 0xffffff00; - public final static int SHN_LOPROC = 0xffffff00; - public final static int SHN_HIPROC = 0xffffff1f; - public final static int SHN_LOOS = 0xffffff20; - public final static int SHN_HIOS = 0xffffff3f; - public final static int SHN_ABS = 0xfffffff1; - public final static int SHN_COMMON = 0xfffffff2; - public final static int SHN_XINDEX = 0xffffffff; - public final static int SHN_HIRESERVE = 0xffffffff; - - - public long st_name; - public long st_value; - public long st_size; - public short st_info; - public short st_other; - public short st_shndx; - - private String name = null; - - private Section sym_section; - - public Symbol( Section section ) { - sym_section = section; - } - - public int st_type() { - return st_info & 0xf; - } - - public int st_bind() { - return (st_info >> 4) & 0xf; - } - - public int compareTo(Object obj) { - long thisVal = 0; - long anotherVal = 0; - if ( obj instanceof Symbol ) { - Symbol sym = (Symbol)obj; - thisVal = this.st_value; - anotherVal = sym.st_value; - } else if ( obj instanceof Long ) { - Long val = (Long)obj; - anotherVal = val.longValue(); - thisVal = this.st_value; - } - return (thisVal<anotherVal ? -1 : (thisVal==anotherVal ? 0 : 1)); - } - - public String toString() { - if ( name == null ) { - try { - Section sections[] = getSections(); - Section symstr = sections[(int)sym_section.sh_link]; - name = string_from_elf_section(symstr, (int)st_name ); - } catch (IOException e ) { - return EMPTY_STRING; - } - } - return name; - } - - - } - - /** - * We have to implement a separate compararator since when we do the - * binary search down below we are using a Long and a Symbol object - * and the Long doesn't know how to compare against a Symbol so if - * we compare Symbol vs Long it is ok, but not if we do Long vs Symbol. - */ - class SymbolComparator implements Comparator { - long val1, val2; - public int compare(Object o1, Object o2) { - - if(o1 instanceof Long) { - val1 = ((Long)o1).longValue(); - } else if(o1 instanceof Symbol) { - val1 = ((Symbol)o1).st_value; - } else { - return -1; - } - - if(o2 instanceof Long) { - val2 = ((Long)o2).longValue(); - } else if(o2 instanceof Symbol) { - val2 = ((Symbol)o2).st_value; - } else { - return -1; - } - return (val1 == val2) ? 0 - : ((val1 < val2) ? -1 : 1); - } - } - - - public class PHdr { - public final static int PT_NULL = 0; - public final static int PT_LOAD = 1; - public final static int PT_DYNAMIC = 2; - public final static int PT_INTERP = 3; - public final static int PT_NOTE = 4; - public final static int PT_SHLIB = 5; - public final static int PT_PHDR = 6; - - public final static int PF_X = 1; - public final static int PF_W = 2; - public final static int PF_R = 4; - - public long p_type; - public long p_offset; - public long p_vaddr; - public long p_paddr; - public long p_filesz; - public long p_memsz; - public long p_flags; - public long p_align; - } - - public PHdr[] getPHdrs() throws IOException { - if ( ehdr.e_phnum == 0 ) { - return new PHdr[0]; - } - efile.seek(ehdr.e_phoff); - PHdr phdrs[] = new PHdr[ehdr.e_phnum]; - for( int i = 0; i < ehdr.e_phnum; i++ ) { - phdrs[i] = new PHdr(); - phdrs[i].p_type = efile.readIntE(); - phdrs[i].p_offset = efile.readIntE(); - phdrs[i].p_vaddr = efile.readIntE(); - phdrs[i].p_paddr = efile.readIntE(); - phdrs[i].p_filesz = efile.readIntE(); - phdrs[i].p_memsz = efile.readIntE(); - phdrs[i].p_flags = efile.readIntE(); - phdrs[i].p_align = efile.readIntE(); - } - return phdrs; - } - - public class Dynamic { - public final static int DYN_ENT_SIZE = 8; - - public final static int DT_NULL = 0; - public final static int DT_NEEDED = 1; - public final static int DT_PLTRELSZ = 2; - public final static int DT_PLTGOT = 3; - public final static int DT_HASH = 4; - public final static int DT_STRTAB = 5; - public final static int DT_SYMTAB = 6; - public final static int DT_RELA = 7; - public final static int DT_RELASZ = 8; - public final static int DT_RELAENT = 9; - public final static int DT_STRSZ = 10; - public final static int DT_SYMENT = 11; - public final static int DT_INIT = 12; - public final static int DT_FINI = 13; - public final static int DT_SONAME = 14; - public final static int DT_RPATH = 15; - public long d_tag; - public long d_val; - private Section section; - private String name; - - protected Dynamic(Section section, long tag, long val) { - this.section = section; - d_tag = tag; - d_val = val; - } - - public String toString() { - if ( name == null ) { - switch ( (int)d_tag ) { - case DT_NEEDED: - case DT_SONAME: - case DT_RPATH: - try { - Section symstr = sections[(int)section.sh_link]; - name = string_from_elf_section(symstr, (int)d_val); - } catch (IOException e) { - name = EMPTY_STRING; - } - break; - default: - name = EMPTY_STRING; - } - } - return name; - } - } - - public Dynamic[] getDynamicSections(Section section) throws IOException { - if ( section.sh_type != Section.SHT_DYNAMIC ) { - return new Dynamic[0]; - } - ArrayList dynList = new ArrayList(); - efile.seek(section.sh_offset); - int off = 0; - // We must assume the section is a table ignoring the sh_entsize as it is not - // set for MIPS. - while( off < section.sh_size ) { - Dynamic dynEnt = new Dynamic(section, efile.readIntE(), efile.readIntE()); - if ( dynEnt.d_tag == Dynamic.DT_NULL ) - break; - dynList.add(dynEnt); - off+= Dynamic.DYN_ENT_SIZE; - } - return (Dynamic[])dynList.toArray(new Dynamic[0]); - } - - private void commonSetup( String file, long offset ) - throws IOException - { - try { - efile = new ERandomAccessFile(file, "r"); //$NON-NLS-1$ - efile.setFileOffset( offset ); - ehdr = new ELFhdr(); - this.file = file; - } finally { - if ( ehdr == null ) { - dispose(); - } - } - } - - //A hollow entry, to be used with caution in controlled situations - protected Elf () { - } - - public Elf (String file, long offset) throws IOException { - commonSetup( file, offset); - } - - public Elf (String file) throws IOException { - commonSetup( file, 0); - } - - public ELFhdr getELFhdr() throws IOException { - return ehdr; - } - - public class Attribute { - public static final int ELF_TYPE_EXE = 1; - public static final int ELF_TYPE_SHLIB = 2; - public static final int ELF_TYPE_OBJ = 3; - public static final int ELF_TYPE_CORE = 4; - - public static final int DEBUG_TYPE_NONE = 0; - public static final int DEBUG_TYPE_STABS = 1; - public static final int DEBUG_TYPE_DWARF = 2; - - String cpu; - int type; - int debugType; - boolean bDebug; - boolean isle; - - public String getCPU() { - return cpu; - } - - public int getType() { - return type; - } - - public boolean hasDebug() { - return debugType != DEBUG_TYPE_NONE; - } - - public int getDebugType() { - return debugType; - } - - public boolean isLittleEndian() { - return isle; - } - } - - public Attribute getAttributes() throws IOException { - Attribute attrib = new Attribute(); - - switch( ehdr.e_type ) { - case Elf.ELFhdr.ET_CORE: - attrib.type = Attribute.ELF_TYPE_CORE; - break; - case Elf.ELFhdr.ET_EXEC: - attrib.type = Attribute.ELF_TYPE_EXE; - break; - case Elf.ELFhdr.ET_REL: - attrib.type = Attribute.ELF_TYPE_OBJ; - break; - case Elf.ELFhdr.ET_DYN: - attrib.type = Attribute.ELF_TYPE_SHLIB; - break; - } - - switch (ehdr.e_machine) { - case Elf.ELFhdr.EM_386 : - case Elf.ELFhdr.EM_486 : - attrib.cpu = "x86"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_68K: - attrib.cpu = "m68k"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_PPC : - case Elf.ELFhdr.EM_CYGNUS_POWERPC : - case Elf.ELFhdr.EM_RS6000 : - attrib.cpu = "ppc"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_PPC64 : - attrib.cpu = "ppc64"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_SH : - attrib.cpu = "sh"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_ARM : - attrib.cpu = "arm"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_MIPS_RS3_LE : - case Elf.ELFhdr.EM_MIPS : - attrib.cpu = "mips"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_SPARC32PLUS: - case Elf.ELFhdr.EM_SPARC: - case Elf.ELFhdr.EM_SPARCV9: - attrib.cpu = "sparc"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_H8_300: - case Elf.ELFhdr.EM_H8_300H: - attrib.cpu = "h8300"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_V850: - case Elf.ELFhdr.EM_CYGNUS_V850: - attrib.cpu = "v850"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_MN10300: - case Elf.ELFhdr.EM_CYGNUS_MN10300: - attrib.cpu = "mn10300"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_MN10200: - case Elf.ELFhdr.EM_CYGNUS_MN10200: - attrib.cpu = "mn10200"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_M32R: - attrib.cpu = "m32r"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_FR30: - case Elf.ELFhdr.EM_CYGNUS_FR30: - attrib.cpu = "fr30"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_XSTORMY16: - attrib.cpu = "xstormy16"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_CYGNUS_FRV: - attrib.cpu = "frv"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_IQ2000: - attrib.cpu = "iq2000"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_EXCESS: - attrib.cpu = "excess"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_NIOSII : - attrib.cpu = "alteranios2"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_NIOS : - attrib.cpu = "alteranios"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_IA_64: - attrib.cpu = "ia64"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_AVR: - attrib.cpu = "avr"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_MSP430: - attrib.cpu = "msp430"; //$NON-NLS-1$ - break; - case Elf.ELFhdr.EM_NONE: - default: - attrib.cpu = "none"; //$NON-NLS-1$ - } - switch (ehdr.e_ident[Elf.ELFhdr.EI_DATA]) { - case Elf.ELFhdr.ELFDATA2LSB : - attrib.isle = true; - break; - case Elf.ELFhdr.ELFDATA2MSB : - attrib.isle = false; - break; - } - // getSections - // find .debug using toString - Section [] sec = getSections(); - if(sec != null) { - for (int i = 0; i < sec.length; i++) { - String s = sec[i].toString(); - if (s.equals(".debug_info")) { //$NON-NLS-1$ - attrib.debugType = Attribute.DEBUG_TYPE_DWARF; - break; - } else if (s.equals(".stab")) { //$NON-NLS-1$ - attrib.debugType = Attribute.DEBUG_TYPE_STABS; - break; - } - } - } - return attrib; - } - - public static Attribute getAttributes(String file) throws IOException { - Elf elf = new Elf(file); - Attribute attrib = elf.getAttributes(); - elf.dispose(); - return attrib; - } - - public static Attribute getAttributes(byte [] array) throws IOException { - - Elf emptyElf = new Elf(); - emptyElf.ehdr = emptyElf.new ELFhdr(array); - emptyElf.sections = new Elf.Section[0]; - Attribute attrib = emptyElf.getAttributes(); - emptyElf.dispose(); - - return attrib; - } - - public static boolean isElfHeader(byte[] e_ident) { - if (e_ident.length < 4 || e_ident[ELFhdr.EI_MAG0] != 0x7f || e_ident[ELFhdr.EI_MAG1] != 'E' || - e_ident[ELFhdr.EI_MAG2] != 'L' || e_ident[ELFhdr.EI_MAG3] != 'F') - return false; - return true; - } - - public void dispose() { - try { - if (efile != null) { - efile.close(); - efile = null; - } - } catch (IOException e) { - } - } - - /** - * Make sure we do not leak the fds. - */ - protected void finalize() throws Throwable { - try { - dispose(); - } finally { - super.finalize(); - } - } - - public Section getSectionByName(String name) throws IOException { - if ( sections == null ) - getSections(); - for( int i = 0; i < sections.length; i++) { - if ( sections[i].toString().equals(name)) { - return sections[i]; - } - } - return null; - } - - public Section[] getSections(int type) throws IOException { - if ( sections == null ) - getSections(); - ArrayList slist = new ArrayList(); - for( int i = 0; i < sections.length; i++ ) { - if ( sections[i].sh_type == type) - slist.add(sections[i]); - } - return (Section[])slist.toArray(new Section[0]); - } - - public Section[] getSections() throws IOException { - if ( sections == null ) { - if ( ehdr.e_shoff == 0 ) { - sections = new Section[0]; - return sections; - } - efile.seek(ehdr.e_shoff); - sections = new Section[ehdr.e_shnum]; - for ( int i = 0; i < ehdr.e_shnum; i++ ) { - sections[i] = new Section(); - sections[i].sh_name = efile.readIntE(); - sections[i].sh_type = efile.readIntE(); - sections[i].sh_flags = efile.readIntE(); - sections[i].sh_addr = efile.readIntE(); - sections[i].sh_offset = efile.readIntE(); - sections[i].sh_size = efile.readIntE(); - sections[i].sh_link = efile.readIntE(); - sections[i].sh_info = efile.readIntE(); - sections[i].sh_addralign = efile.readIntE(); - sections[i].sh_entsize = efile.readIntE(); - if ( sections[i].sh_type == Section.SHT_SYMTAB ) - syms = i; - if ( syms == 0 && sections[i].sh_type == Section.SHT_DYNSYM ) - syms = i; - } - } - return sections; - } - - - private Symbol[] loadSymbolsBySection( Section section ) throws IOException { - int numSyms = 1; - if (section.sh_entsize != 0) { - numSyms = (int)section.sh_size / (int)section.sh_entsize; - } - ArrayList symList = new ArrayList(numSyms); - for( int c = 0; c < numSyms; c++) { - efile.seek(section.sh_offset + (section.sh_entsize * c)); - Symbol symbol = new Symbol( section ); - symbol.st_name = efile.readIntE(); - symbol.st_value = efile.readIntE(); - symbol.st_size = efile.readIntE(); - symbol.st_info = efile.readByte(); - symbol.st_other = efile.readByte(); - symbol.st_shndx = efile.readShortE(); - if ( symbol.st_info == 0 ) - continue; - symList.add(symbol); - } - Symbol[] results = (Symbol[])symList.toArray(new Symbol[0]); - Arrays.sort(results); - return results; - } - - - public void loadSymbols() throws IOException { - if ( symbols == null ) { - Section section[] = getSections(Section.SHT_SYMTAB); - if( section.length > 0 ) { - symtab_sym = section[0]; - symtab_symbols = loadSymbolsBySection( section[0] ); - } else { - symtab_sym = null; - symtab_symbols = new Symbol[0]; - } - - section = getSections(Section.SHT_DYNSYM); - if( section.length > 0 ) { - dynsym_sym = section[0]; - dynsym_symbols = loadSymbolsBySection( section[0] ); - } else { - dynsym_sym = null; - dynsym_symbols = new Symbol[0]; - } - - if( symtab_sym != null ) { - // sym = symtab_sym; - symbols = symtab_symbols; - } else if( dynsym_sym != null ) { - // sym = dynsym_sym; - symbols = dynsym_symbols; - } - } - } - - public Symbol[] getSymbols() { - return symbols; - } - - public Symbol[] getDynamicSymbols() { - return dynsym_symbols; - } - - public Symbol[] getSymtabSymbols() { - return symtab_symbols; - } - - - - /* return the address of the function that address is in */ - public Symbol getSymbol( long vma ) { - if ( symbols == null ) { - return null; - } - - //@@@ If this works, move it to a single instance in this class. - SymbolComparator symbol_comparator = new SymbolComparator(); - - int ndx = Arrays.binarySearch(symbols, new Long(vma), symbol_comparator); - if ( ndx > 0 ) - return symbols[ndx]; - if ( ndx == -1 ) { - return null; - } - ndx = -ndx - 1; - return symbols[ndx-1]; - } - - public long swapInt( long val ) { - if ( ehdr.e_ident[ELFhdr.EI_DATA] == ELFhdr.ELFDATA2LSB ) { - short tmp[] = new short[4]; - tmp[0] = (short)(val & 0x00ff); - tmp[1] = (short)((val >> 8) & 0x00ff); - tmp[2] = (short)((val >> 16) & 0x00ff); - tmp[3] = (short)((val >> 24) & 0x00ff); - return ((tmp[0] << 24) + (tmp[1] << 16) + (tmp[2] << 8) + tmp[3]); - } - return val; - } - - public int swapShort( short val ) { - if ( ehdr.e_ident[ELFhdr.EI_DATA] == ELFhdr.ELFDATA2LSB ) { - short tmp[] = new short[2]; - tmp[0] = (short)(val & 0x00ff); - tmp[1] = (short)((val >> 8) & 0x00ff); - return (short)((tmp[0] << 8) + tmp[1]); - } - return val; - } - - public String getFilename() { - return file; - } -} |