; Old IP
mov eax, [esp+0x20+16]
+ test eax, eax
+ jz .nosave
mov DWORD [eax], .restore
; Old SP
mov eax, [esp+0x20+8]
mov [eax], esp
+.nosave:
mov ecx, [esp+0x20+12] ; New IP
mov eax, [esp+0x20+20] ; New CR3
mov esp, [esp+0x20+ 4] ; New SP
pop es
pop ds
popa
- add esp, 4 ; CPU ID
- ; No Error code / int num
+ add esp, 8 ; CPU ID / Error Code
iret
%endif
; --------------
xor eax, eax
mov ebx, [esp+4]
int 0xAC
+
+; vim: ft=nasm ts=8