I'm debugging my x64 c++ program to learn how it look in x64dbg. I see some register for r8-r15 on the right window, but I don't see r8d
. There were others like r15d
too. So what is it?
The d
suffix means its (the 64-bit register's) lower double-word. For example, r8d
is accessing r8
's lower 32-bit as if it is a 32-bit register.
You can find more info here.