defasm drop
; pop eax
# 58 ?'
next

defasm dup
; push dword [esp]
# ff ?' # 34 ?' # 24 ?'
next

defasm over
; push dword [esp + 4]
# ff ?' # 74 ?' # 24 ?' # 4 ?'
next

defasm swap
; pop eax
# 58 ?'
; pop ebx
# 5b ?'
; push eax
# 50 ?'
; push ebx
# 53 ?'
next