[Valgrind-developers] Finding the highest user-space address

[Nicholas N. <nj...@ca...>]

Hi,

What's a good way to find the highest user-space address?

One possibility is to look at the address of a stack variable, and round 
up a bit.  This is really simple but assumes that the stack is at the top 
of the user-space.

Another possibility is to poke around with mmaps, and see where they stop 
succeeding.  Unfortunately, this kind of trashes the code/data that is 
already used in the address space, which gives unpredictable results.

Any other ideas?

This is with respect to determining (at configure-time) where stage2 
should go.

thanks

N