class ElfFile
{
- public static final int SHT_NULL = 0;
- public static final int SHT_PROGBITS = 1;
- public static final int SHT_SYMTAB = 2;
- public static final int SHT_STRTAB = 3;
- public static final int SHT_RELA = 4;
- public static final int SHT_HASH = 5;
- public static final int SHT_DYNAMIC = 6;
- public static final int SHT_NOTE = 7;
- public static final int SHT_NOBITS = 8;
- public static final int SHT_REL = 9;
- public static final int SHT_SHLIB = 10;
- public static final int SHT_DYNSYM = 11;
- public static final int SHT_INIT_ARRAY = 14;
- public static final int SHT_FINI_ARRAY = 15;
- public static final int SHT_PREINIT_ARRAY = 16;
- public static final int SHT_GROUP = 17;
- public static final int SHT_SYMTAB_SHNDX = 18;
-
- public static final int DT_NULL = 0;
- public static final int DT_NEEDED = 1;
- public static final int DT_PLTRELSZ = 2;
- public static final int DT_PLTGOT = 3;
- public static final int DT_HASH = 4;
- public static final int DT_STRTAB = 5;
- public static final int DT_SYMTAB = 6;
- public static final int DT_RELA = 7;
- public static final int DT_RELASZ = 8;
- public static final int DT_RELAENT = 9;
- public static final int DT_STRSZ = 10;
- public static final int DT_SYMENT = 11;
- public static final int DT_INIT = 12;
- public static final int DT_FINI = 13;
- public static final int DT_SONAME = 14;
- public static final int DT_RPATH = 15;
- public static final int DT_SYMBOLIC = 16;
- public static final int DT_REL = 17;
- public static final int DT_RELSZ = 18;
- public static final int DT_RELENT = 19;
- public static final int DT_PLTREL = 20;
- public static final int DT_DEBUG = 21;
- public static final int DT_TEXTREL = 22;
- public static final int DT_JMPREL = 23;
- public static final int DT_BIND_NOW = 24;
- public static final int DT_INIT_ARRAY = 25;
- public static final int DT_FINI_ARRAY = 26;
- public static final int DT_INIT_ARRAYSZ = 27;
- public static final int DT_FINI_ARRAYSZ = 28;
- public static final int DT_RUNPATH = 29;
- public static final int DT_FLAGS = 30;
- public static final int DT_ENCODING = 32;
- public static final int DT_PREINIT_ARRAY = 32;
- public static final int DT_PREINIT_ARRAYSZ = 33;
-
- protected final RandomAccessFile file;
- protected final boolean bit64, little;
- public final Header header;
- public final SectionHeader[] secHeaders;
-
- protected short swap(short s)
- {
- return (little? (short)(((s&0xff)<<8)|((s>>8)&0xff)) : s);
- }
-
- protected int swap(int i)
- {
- return (little? (((i&0xff)<<24)|((i&0xff00)<<8)|
- ((i>>8)&0xff00)|((i>>24)&0xff)) : i);
- }
-
- protected long swap(long l)
- {
- return (little? ((((long)swap((int)(l&0xffffffffL)))<<32) |
- (((long)swap((int)((l>>32)&0xffffffffL)))&0xffffffffL))
- : l);
- }
-
- protected short getHalf() throws IOException
- {
- return swap(file.readShort());
- }
-
- protected int getWord() throws IOException
- {
- return swap(file.readInt());
- }
-
- protected long getXword() throws IOException
- {
- return swap(file.readLong());
- }
-
- protected long getAddr() throws IOException
- {
- return (bit64? getXword() : getWord());
- }
-
- protected long getOff() throws IOException
- {
- return (bit64? getXword() : getWord());
- }
-
- public class Header
- {
- public final byte[] e_ident;
- public final short e_type, e_machine;
- public final int e_version;
- public final long e_entry, e_phoff, e_shoff;
- public final int e_flags;
- public final short e_ehsize, e_phentsize, e_phnum;
- public final short e_shentsize, e_shnum, e_shstrndx;
-
- private Header(byte[] ident) throws IOException
+ public static final int SHT_NULL = 0;
+ public static final int SHT_PROGBITS = 1;
+ public static final int SHT_SYMTAB = 2;
+ public static final int SHT_STRTAB = 3;
+ public static final int SHT_RELA = 4;
+ public static final int SHT_HASH = 5;
+ public static final int SHT_DYNAMIC = 6;
+ public static final int SHT_NOTE = 7;
+ public static final int SHT_NOBITS = 8;
+ public static final int SHT_REL = 9;
+ public static final int SHT_SHLIB = 10;
+ public static final int SHT_DYNSYM = 11;
+ public static final int SHT_INIT_ARRAY = 14;
+ public static final int SHT_FINI_ARRAY = 15;
+ public static final int SHT_PREINIT_ARRAY = 16;
+ public static final int SHT_GROUP = 17;
+ public static final int SHT_SYMTAB_SHNDX = 18;
+
+ public static final int DT_NULL = 0;
+ public static final int DT_NEEDED = 1;
+ public static final int DT_PLTRELSZ = 2;
+ public static final int DT_PLTGOT = 3;
+ public static final int DT_HASH = 4;
+ public static final int DT_STRTAB = 5;
+ public static final int DT_SYMTAB = 6;
+ public static final int DT_RELA = 7;
+ public static final int DT_RELASZ = 8;
+ public static final int DT_RELAENT = 9;
+ public static final int DT_STRSZ = 10;
+ public static final int DT_SYMENT = 11;
+ public static final int DT_INIT = 12;
+ public static final int DT_FINI = 13;
+ public static final int DT_SONAME = 14;
+ public static final int DT_RPATH = 15;
+ public static final int DT_SYMBOLIC = 16;
+ public static final int DT_REL = 17;
+ public static final int DT_RELSZ = 18;
+ public static final int DT_RELENT = 19;
+ public static final int DT_PLTREL = 20;
+ public static final int DT_DEBUG = 21;
+ public static final int DT_TEXTREL = 22;
+ public static final int DT_JMPREL = 23;
+ public static final int DT_BIND_NOW = 24;
+ public static final int DT_INIT_ARRAY = 25;
+ public static final int DT_FINI_ARRAY = 26;
+ public static final int DT_INIT_ARRAYSZ = 27;
+ public static final int DT_FINI_ARRAYSZ = 28;
+ public static final int DT_RUNPATH = 29;
+ public static final int DT_FLAGS = 30;
+ public static final int DT_ENCODING = 32;
+ public static final int DT_PREINIT_ARRAY = 32;
+ public static final int DT_PREINIT_ARRAYSZ = 33;
+
+ protected final RandomAccessFile file;
+ protected final boolean bit64, little;
+ public final Header header;
+ public final SectionHeader[] secHeaders;
+
+ protected short swap(short s)
{
- e_ident = ident;
- e_type = getHalf();
- e_machine = getHalf();
- e_version = getWord();
- e_entry = getAddr();
- e_phoff = getOff();
- e_shoff = getOff();
- e_flags = getWord();
- e_ehsize = getHalf();
- e_phentsize = getHalf();
- e_phnum = getHalf();
- e_shentsize = getHalf();
- e_shnum = getHalf();
- e_shstrndx = getHalf();
+ return (little ? (short)(((s & 0xff) << 8) | ((s >> 8) & 0xff)) : s);
}
- }
- public class SectionHeader
- {
- public final int sh_name, sh_type;
- public final long sh_flags, sh_addr, sh_offset, sh_size;
- public final int sh_link, sh_info;
- public final long sh_addralign, sh_entsize;
+ protected int swap(int i)
+ {
+ return (little ? (((i & 0xff) << 24) | ((i & 0xff00) << 8) |
+ ((i >> 8) & 0xff00) | ((i >> 24) & 0xff)) : i);
+ }
+
+ protected long swap(long l)
+ {
+ return (little? ((((long)swap((int)(l & 0xffffffffL))) << 32) |
+ (((long)swap((int)((l >> 32) & 0xffffffffL))) & 0xffffffffL)) : l);
+ }
+
+ protected short getHalf() throws IOException
+ {
+ return swap(file.readShort());
+ }
- private SectionHeader() throws IOException
+ protected int getWord() throws IOException
{
- sh_name = getWord();
- sh_type = getWord();
- sh_flags = (bit64? getXword() : getWord());
- sh_addr = getAddr();
- sh_offset = getOff();
- sh_size = (bit64? getXword() : getWord());
- sh_link = getWord();
- sh_info = getWord();
- if (bit64) {
- sh_addralign = getXword();
- sh_entsize = getXword();
- } else {
- sh_addralign = getWord();
- sh_entsize = getWord();
- }
+ return swap(file.readInt());
}
- }
- public class Dynamic
- {
- public final long d_tag, d_val;
+ protected long getXword() throws IOException
+ {
+ return swap(file.readLong());
+ }
+
+ protected long getAddr() throws IOException
+ {
+ return (bit64? getXword() : getWord());
+ }
+
+ protected long getOff() throws IOException
+ {
+ return (bit64 ? getXword() : getWord());
+ }
+
+ public class Header
+ {
+ public final byte[] e_ident;
+ public final short e_type, e_machine;
+ public final int e_version;
+ public final long e_entry, e_phoff, e_shoff;
+ public final int e_flags;
+ public final short e_ehsize, e_phentsize, e_phnum;
+ public final short e_shentsize, e_shnum, e_shstrndx;
+
+ private Header(byte[] ident) throws IOException
+ {
+ e_ident = ident;
+ e_type = getHalf();
+ e_machine = getHalf();
+ e_version = getWord();
+ e_entry = getAddr();
+ e_phoff = getOff();
+ e_shoff = getOff();
+ e_flags = getWord();
+ e_ehsize = getHalf();
+ e_phentsize = getHalf();
+ e_phnum = getHalf();
+ e_shentsize = getHalf();
+ e_shnum = getHalf();
+ e_shstrndx = getHalf();
+ }
+ }
+
+ public class SectionHeader
+ {
+ public final int sh_name, sh_type;
+ public final long sh_flags, sh_addr, sh_offset, sh_size;
+ public final int sh_link, sh_info;
+ public final long sh_addralign, sh_entsize;
+
+ private SectionHeader() throws IOException
+ {
+ sh_name = getWord();
+ sh_type = getWord();
+ sh_flags = (bit64 ? getXword() : getWord());
+ sh_addr = getAddr();
+ sh_offset = getOff();
+ sh_size = (bit64 ? getXword() : getWord());
+ sh_link = getWord();
+ sh_info = getWord();
+ if (bit64) {
+ sh_addralign = getXword();
+ sh_entsize = getXword();
+ } else {
+ sh_addralign = getWord();
+ sh_entsize = getWord();
+ }
+ }
+ }
+
+ public class Dynamic
+ {
+ public final long d_tag, d_val;
+
+ private Dynamic() throws IOException
+ {
+ if (bit64) {
+ d_tag = getXword();
+ d_val = getXword();
+ } else {
+ d_tag = getWord();
+ d_val = getWord();
+ }
+ }
+ }
+
+ public Dynamic[] readDynamic(SectionHeader sh) throws IOException
+ {
+ file.seek(sh.sh_offset);
+ Dynamic[] dyn = new Dynamic[(int)(sh.sh_size / sh.sh_entsize)];
+ for (int i = 0; i < dyn.length; i++)
+ dyn[i] = new Dynamic();
+ return dyn;
+ }
+
+ public void read(SectionHeader sh, byte[] buf) throws Exception
+ {
+ if (sh.sh_type == SHT_NOBITS || buf.length > sh.sh_size)
+ throw new Exception("Illegal read");
+ file.seek(sh.sh_offset);
+ file.readFully(buf);
+ }
- private Dynamic() throws IOException
+ public ElfFile(File f) throws Exception
{
- if (bit64) {
- d_tag = getXword();
- d_val = getXword();
- } else {
- d_tag = getWord();
- d_val = getWord();
- }
+ file = new RandomAccessFile(f, "r");
+ file.seek(0);
+ byte[] ident = new byte[16];
+ file.readFully(ident);
+ if (ident[0] != 0x7f || ident[1] != 'E' ||
+ ident[2] != 'L' || ident[3] != 'F')
+ throw new Exception("ELF signature not found");
+ if (ident[4] == 1)
+ bit64 = false;
+ else if (ident[4] == 2)
+ bit64 = true;
+ else
+ throw new Exception("Invalid ELF file class");
+ if (ident[5] == 1)
+ little = true;
+ else if (ident[5] == 2)
+ little = false;
+ else
+ throw new Exception("Invalid ELF data encoding");
+ header = new Header(ident);
+ file.seek(header.e_shoff);
+ secHeaders = new SectionHeader[header.e_shnum];
+ for (int i = 0; i < header.e_shnum; i++)
+ secHeaders[i] = new SectionHeader();
}
- }
-
- public Dynamic[] readDynamic(SectionHeader sh) throws IOException
- {
- file.seek(sh.sh_offset);
- Dynamic[] dyn = new Dynamic[(int)(sh.sh_size/sh.sh_entsize)];
- for (int i=0; i<dyn.length; i++)
- dyn[i] = new Dynamic();
- return dyn;
- }
-
- public void read(SectionHeader sh, byte[] buf) throws Exception
- {
- if (sh.sh_type == SHT_NOBITS || buf.length > sh.sh_size)
- throw new Exception("Illegal read");
- file.seek(sh.sh_offset);
- file.readFully(buf);
- }
-
- public ElfFile(File f) throws Exception
- {
- file = new RandomAccessFile(f, "r");
- file.seek(0);
- byte[] ident = new byte[16];
- file.readFully(ident);
- if (ident[0] != 0x7f || ident[1] != 'E' ||
- ident[2] != 'L' || ident[3] != 'F')
- throw new Exception("ELF signature not found");
- if (ident[4] == 1)
- bit64 = false;
- else if (ident[4] == 2)
- bit64 = true;
- else
- throw new Exception("Invalid ELF file class");
- if (ident[5] == 1)
- little = true;
- else if (ident[5] == 2)
- little = false;
- else
- throw new Exception("Invalid ELF data encoding");
- header = new Header(ident);
- file.seek(header.e_shoff);
- secHeaders = new SectionHeader[header.e_shnum];
- for (int i=0; i<header.e_shnum; i++)
- secHeaders[i] = new SectionHeader();
- }
}
projects / sigrok-androidutils.git / blobdiff