OSDev.org

Posted: **Thu Sep 29, 2005 1:45 am**

Hi again!

Reading Tim Robinsons' first memory management tutorial, I came across

We know the address of the start and end of our kernel (you can set a symbol to the end of the kernel image in
a GNU ld script, for example). From this we can work out how big the kernel is so that we can avoid
allocating memory from the kernel?s space ? to allocate memory from the middle of the kernel would be fatal.

So after a quick search on google, I found that I should put

Code: Select all

_endofkernel = ABSOLUTE(.) ;

somewhere, but where? Or can I just write

Code: Select all

_endofkernel = . ;

at the end of the script, just before the final '}' ?

Posted: **Thu Sep 29, 2005 2:03 am**

I'm not an ld scripting expert, but seeing how I (successfully) set start_ctors and end_ctors in BareBonesC++, I'd say setting _endkernel = . at the end of your linker script should be sufficient.

Posted: **Thu Sep 29, 2005 2:09 am**

Thank you!

OSDev.org

Symbol in GNU ld script

Symbol in GNU ld script

Re:Symbol in GNU ld script

Re:Symbol in GNU ld script