ld linker script and addrs of labels
Posted: Fri Sep 21, 2007 1:37 pm
I´m finally trying to move my kernel from asm to c. So now I have 1 big problem left, my label table.
I want to use elf for my kernel. So what have I to do that the labels I want to be in the label list of the elf are there?
And another problem I have. Is there a way that I can say create relocatable entries int the elf file for "foo" and all calls to "foo" get these entries? Or have I to use function pointers and change them when I want to change the addr which gets called?
I need this for things like the scheduler, where I have 1 scheduler but many functions how the threads get enqueued (because of difference of the cpu).
I want a kernel which runs fine w/o that I have to relocate the things, but that I can relocate it later!
In assembly I used indirect calls, but I like to get rid of these.
I want to use elf for my kernel. So what have I to do that the labels I want to be in the label list of the elf are there?
And another problem I have. Is there a way that I can say create relocatable entries int the elf file for "foo" and all calls to "foo" get these entries? Or have I to use function pointers and change them when I want to change the addr which gets called?
I need this for things like the scheduler, where I have 1 scheduler but many functions how the threads get enqueued (because of difference of the cpu).
I want a kernel which runs fine w/o that I have to relocate the things, but that I can relocate it later!
In assembly I used indirect calls, but I like to get rid of these.