I know how the 32-bit protected mode implements the jump by modifying the segment selector, but the 64-bit situation is different from what I imagined.
I wrote the descriptor in gdt.they are both same
I wrote a code segment descriptor where the selector is 0x3b, and its properties are exactly the same as the default 0x23 selector.
It fails when I access with jmp far: 0x3b: effective address.before step into after stepinto:false
But when I use jmp far 0x23:effective address it succeeds.sucess use 0x23
This question has always confused me. My mechiane information is win7 x64.
I jumped to the address of the ring3 program segment, which is a legal address.
My question is why is this failing? There is no problem doing this on XP-32, why does win764 fail. How to jump correctly.
