stack pointer on 64-bit architecture

[Oliver Pinter]

The stack address come from this code:

https://github.com/freebsd/freebsd/blob/master/sys/kern/kern_exec.c#L1065
where sv->sv_usrstack depends on architecture and on image activator.

and this the other place, where the stack address is "hardcoded":
https://github.com/freebsd/freebsd/blob/master/sys/kern/kern_exec.c#L1240


Just grep against sv_psstrings and sv_usrstack to see what depend on
current hardcoded stack address. ;)

On Sun, Apr 12, 2015 at 9:19 PM, Wojciech Puchar <wojtek at puchar.net> wrote:
> what decides where stack is located when process starts on 64-bit machine
> (x86-64)?
>
> it starts normally below 0x0000800000000000
>
> can starting address be set to different (smaller) value?
>
> _______________________________________________
> freebsd-hackers at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe at freebsd.org"