OpenEuphoria

WinXP SP2 and inline machine code calling

• Posted by akusaya at gmx.net Sep 15, 2004
• 467 views

I  haven't  tried  SP2, and possibly never, but SP2 has Data Execution
Prevention http://fype.com/sp2dep

Will it be preventing this kind of code execution?
(because the code will be executed from data area, CMIIW)


(taken from bit.e)
poke(SHL_SPACE, {
     -- first int argument is at stack offset +4, 2nd int is at +8
     -- returns a *signed* 32-bit number
     #8B, #44, #24, #04,      -- mov  eax, [esp+4]
     #8A, #4C, #24, #08,      -- mov  cl,  [esp+8]
     #D3, #E0,                -- shl  eax, cl
     #C2, #08, #00            -- ret  8  -- pop 8 bytes off the stack
    })

SHIFT_LEFT = define_c_func("", SHL_SPACE, {C_INT, C_INT}, C_INT)