// compare a chuck of the context record contained between the two offsets
private bool CheckContextChunk(IA64Context a1, IA64Context a2, int startOffset, int endOffset)
{
using (var c1 = a1.OpenForDirectAccess())
{
using (var c2 = a2.OpenForDirectAccess())
{
for (int i = startOffset; i < endOffset; i++)
{
if (Marshal.ReadByte(c1.RawBuffer, i) != Marshal.ReadByte(c2.RawBuffer, i))
{
return(false);
}
}
}
}
return(true);
}
private bool CheckIA64Contexts(IA64Context a1, IA64Context a2)
{
// CONTEXT_CONTROL contains: ApUNAT through rest of CONTEXT
if ((a1.Flags & ContextFlags.IA64ContextControl) == ContextFlags.IA64ContextControl)
{
if (!CheckContextChunk(a1, a2, (int)IA64Offsets.ApUNAT, (int)IA64Offsets.UNUSEDPACK))
{
return(false);
}
}
// CONTEXT_CONTROL contains: IntGp through ApUNAT
if ((a1.Flags & ContextFlags.IA64ContextInteger) == ContextFlags.IA64ContextInteger)
{
if (!CheckContextChunk(a1, a2, (int)IA64Offsets.IntGp, (int)IA64Offsets.ApUNAT))
{
return(false);
}
}
// CONTEXT_DEBUG contains: DbI0 through FltS0
if ((a1.Flags & ContextFlags.IA64ContextDebug) == ContextFlags.IA64ContextDebug)
{
if (!CheckContextChunk(a1, a2, (int)IA64Offsets.DbI0, (int)IA64Offsets.FltS0))
{
return(false);
}
}
// CONTEXT_FLOATING_POINT contains: FltS0 through StFPSR
if ((a1.Flags & ContextFlags.IA64ContextFloatingPoint) == ContextFlags.IA64ContextFloatingPoint)
{
if (!CheckContextChunk(a1, a2, (int)IA64Offsets.FltS0, (int)IA64Offsets.StFPSR))
{
return(false);
}
}
return(true);
}
