Shit. Alright, in that case I'm gonna have to do some more digging. I need
to determine a point where there's a minimal need to remap all the addresses
and pointers but we have enough set up that we can switch over to page
tables. And I need to talk to my tutors again.
On Mon, Aug 4, 2008 at 10:03 AM, Bruce Markham <[EMAIL PROTECTED]>wrote:
>
>
> On Sun, Aug 3, 2008 at 9:53 PM, Zachary Gorden <[EMAIL PROTECTED]>wrote:
>
>> I actually have a similar question, and this pertains to the current
>> mapping of the kernel in memory. Because we don't have anything like ntldr
>> or freeldr, the kernel needs to manually set up its page tables first, kinda
>> like how Linux does it. If we're following convention, I'll need to remap
>> all of the addresses to their appropriate location in the upper 2GB.
>>
>> So my question basically is, is there a current map of what the kernel
>> looks like in memory?
>>
>>
> This is material is definitely better suited for a separate thread, (which
> I've taken care of). I'll answer with as much as I expect is true...
>
> The kernel has no well-defined structure in memory. The AOT outputs things
> in a specific order (undocumented, but with research it wouldn't be hard to
> determine), into a brute-forced binary that GRUB loads into memory and then
> lets us have our way with ourselves.
>
> So without a custom loader, or some sort of hacked implementation in order
> to work with another loader, we currently do not have support for this.
> Frankly, I don't think you can setup page tables without having something
> tied to an interrupt when paging is needed to be done - which brings us to
> identifying and accessing disk space. Due to the nano-kernel-esque design we
> are shooting for, (as far as modularity), I don't think this is an option
> for us right now.
>
>
>
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