/// <summary>
/// Gets the linear address of a specified segment.
/// </summary>
/// <param name="segment">The segment to get.</param>
/// <param name="context">The context.</param>
/// <returns>A <see cref="IntPtr" /> pointer corresponding to the linear address of the segment.</returns>
/// <exception cref="InvalidEnumArgumentException">segment</exception>
public IntPtr GetRealSegmentAddress(SegmentRegisters segment, ref ThreadContext32 context)
{
// Get a selector entry for the segment
LdtEntry entry;
switch (segment)
{
case SegmentRegisters.Cs:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegCs);
break;
case SegmentRegisters.Ds:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegDs);
break;
case SegmentRegisters.Es:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegEs);
break;
case SegmentRegisters.Fs:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegFs);
break;
case SegmentRegisters.Gs:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegGs);
break;
case SegmentRegisters.Ss:
entry = ThreadCore.GetThreadSelectorEntry(Handle, context.SegSs);
break;
default:
throw new InvalidEnumArgumentException(nameof(segment), (int)segment, typeof(SegmentRegisters));
}
// Compute the linear address
return(new IntPtr(entry.BaseLow | (entry.BaseMid << 16) | (entry.BaseHi << 24)));
}
public static extern bool GetThreadContext(IntPtr hThread, ref ThreadContext32 lpContext);
public static extern bool SetThreadContext(IntPtr hThread, [MarshalAs(UnmanagedType.Struct)] ref ThreadContext32 lpContext);
internal void InitializeForWalk()
{
Context = Thread.GetContext();
}
