public bool GetThreadContext(uint threadID, uint contextFlags, Span <byte> context)
{
using SafeWin32Handle thread = OpenThread(ThreadAccess.THREAD_ALL_ACCESS, true, threadID);
if (thread.IsInvalid)
return(false);
fixed(byte *ptr = context)
return(GetThreadContext(thread.DangerousGetHandle(), new IntPtr(ptr)));
}
public bool GetThreadContext(uint threadID, uint contextFlags, Span <byte> context)
{
// We need to set the ContextFlags field to be the value of contextFlags. For AMD64, that field is
// at offset 0x30. For all other platforms that field is at offset 0. We test here whether the context
// is large enough to write the flags and then assign the value based on the architecture's offset.
bool amd64 = Architecture == Architecture.X64;
if (context.Length < 4 || (amd64 && context.Length < 0x34))
{
return(false);
}
if (amd64)
{
fixed(byte *ptr = context)
{
AMD64Context *ctx = (AMD64Context *)ptr;
ctx->ContextFlags = contextFlags;
}
}
else
{
fixed(byte *ptr = context)
{
uint *intPtr = (uint *)ptr;
*intPtr = contextFlags;
}
}
using SafeWin32Handle thread = OpenThread(ThreadAccess.THREAD_ALL_ACCESS, true, threadID);
if (thread.IsInvalid)
return(false);
fixed(byte *ptr = context)
return(GetThreadContext(thread.DangerousGetHandle(), new IntPtr(ptr)));
}