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using System;
using System.IO;
using System.Text;
using Mono.Debugger.Backend;
namespace Mono.Debugger.Backend
{
[Serializable]
internal class TargetReader
{
byte[] data;
TargetBinaryReader reader;
TargetMemoryInfo info;
internal TargetReader (byte[] data, TargetMemoryInfo info)
{
if ((info == null) || (data == null))
throw new ArgumentNullException ();
this.reader = new TargetBinaryReader (data, info);
this.info = info;
this.data = data;
}
internal TargetReader (TargetBlob data)
: this (data.Contents, data.TargetMemoryInfo)
{ }
public long Offset {
get {
return reader.Position;
}
set {
reader.Position = value;
}
}
public long Size {
get {
return data.Length;
}
}
public byte[] Contents {
get {
return data;
}
}
public TargetBinaryReader BinaryReader {
get {
return reader;
}
}
public int TargetIntegerSize {
get {
return info.TargetIntegerSize;
}
}
public int TargetLongIntegerSize {
get {
return info.TargetLongIntegerSize;
}
}
public int TargetAddressSize {
get {
return info.TargetAddressSize;
}
}
public bool IsBigEndian {
get {
return info.IsBigEndian;
}
}
public AddressDomain AddressDomain {
get {
return info.AddressDomain;
}
}
public byte ReadByte ()
{
return reader.ReadByte ();
}
public byte PeekByte ()
{
return reader.PeekByte ();
}
public byte PeekByte (long offset)
{
return reader.PeekByte (offset);
}
public int ReadInteger ()
{
return reader.ReadInt32 ();
}
public int PeekInteger ()
{
return reader.PeekInt32 ();
}
public int PeekInteger (long offset)
{
return reader.PeekInt32 (offset);
}
public long ReadLongInteger ()
{
if (TargetLongIntegerSize == 4)
return reader.ReadInt32 ();
else if (TargetLongIntegerSize == 8)
return reader.ReadInt64 ();
else
throw new TargetMemoryException (
"Unknown target long integer size " + TargetLongIntegerSize);
}
public long PeekLongInteger ()
{
if (TargetLongIntegerSize == 4)
return reader.PeekInt32 ();
else if (TargetLongIntegerSize == 8)
return reader.PeekInt64 ();
else
throw new TargetMemoryException (
"Unknown target long integer size " + TargetLongIntegerSize);
}
public long PeekLongInteger (long offset)
{
if (TargetLongIntegerSize == 4)
return reader.PeekInt32 (offset);
else if (TargetLongIntegerSize == 8)
return reader.PeekInt64 (offset);
else
throw new TargetMemoryException (
"Unknown target long integer size " + TargetLongIntegerSize);
}
long do_read_address ()
{
if (TargetAddressSize == 4)
return (uint) reader.ReadInt32 ();
else if (TargetAddressSize == 8)
return reader.ReadInt64 ();
else
throw new TargetMemoryException (
"Unknown target address size " + TargetAddressSize);
}
public TargetAddress ReadAddress ()
{
long address = do_read_address ();
if (address == 0)
return TargetAddress.Null;
else
return new TargetAddress (info.AddressDomain, address);
}
long do_peek_address ()
{
if (TargetAddressSize == 4)
return (uint) reader.PeekInt32 ();
else if (TargetAddressSize == 8)
return reader.PeekInt64 ();
else
throw new TargetMemoryException (
"Unknown target address size " + TargetAddressSize);
}
public TargetAddress PeekAddress ()
{
long address = do_peek_address ();
if (address == 0)
return TargetAddress.Null;
else
return new TargetAddress (info.AddressDomain, address);
}
long do_peek_address (long offset)
{
if (TargetAddressSize == 4)
return (uint) reader.PeekInt32 (offset);
else if (TargetAddressSize == 8)
return reader.PeekInt64 (offset);
else
throw new TargetMemoryException (
"Unknown target address size " + TargetAddressSize);
}
public TargetAddress PeekAddress (long offset)
{
long address = do_peek_address (offset);
if (address == 0)
return TargetAddress.Null;
else
return new TargetAddress (info.AddressDomain, address);
}
public override string ToString ()
{
return String.Format ("MemoryReader ([{0}])", TargetBinaryReader.HexDump (data));
}
}
}
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