On: Can I exec a new process without an executable fil...

[qguv]

    ; set the first syscall argument to 42
    push   0x2a
    pop    edi

    ; select syscall 60 (sys_exit)
    push   0x3c
    pop    eax

    ; sys_exit(42)
    syscall

[enriquto → qguv]

LOL my asm is rusty, didn't even know about the syscall instruction (I'd have used int 0x80 here)

[mFixman → qguv]

What's the point of `push`ing constants to the stack and `pop`ing them to registers instead of `mov`ing them directly?

[saagarjha → mFixman]

I think they encode smaller?

[anshargal → qguv]

That's cool - I wonder why exit code is not set to 42 in practice? binary still returns 0, must be a bug somewhere.

[saagarjha → anshargal]

A successful run not exiting with EXIT_SUCCESS usually requires a good reason to justify it.