Hi Jean,
You were right, this was a problem encountered befor. The "magic" in the
Makefile wasn't implemented because I did not have cpp in my path. I found a
reference to the fix in an email to Sun-Mi Yu. I'm not home free yet, but
I' closer.
Thanks again!
Paul Phillips
-----Original Message-----
From: Jean Wolter <jw5(a)os.inf.tu-dresden.de>
To: Paul Phillips <pphillips(a)ivue.com>
Cc: l4-hackers(a)os.inf.tu-dresden.de <l4-hackers(a)os.inf.tu-dresden.de>
Date: Friday, January 15, 1999 4:53 AM
Subject: Re: L4-Linux fails to boot - hangs setting up IDT
>"Paul Phillips" <pphillips(a)ivue.com> writes:
>
>> 1.) Why are you calculating the address of the table by subtracting
>> out EMULIB_CODE_ADDRESS (Which is 0xA0008000?) ?
>
>The emulation library is relocated to address 0xa0008000 and idt_table
>is a symbol of the emulation library. If you have a look at the symbol
>table you will find
>
>a00084a8 A idt_table
>
>So ((unsigned long)&idt_table - EMULIB_CODE_ADDRESS) is the offset of
>the idt within our emulation library.
>
>
>> 2.) How & why is the emulator code moved to "special page". Where is
>> the "special page" set up since paging isn't set up until after this
>> code is executed?
>
>
>We have to copy the code to ensure that it is page aligned. The
>special page is mapped into the address space of every unix process
>when it raises its first page fault. Every unix process (L4Linux
>process) starts at a fixed address, so we know, that the very first
>page fault will request the emulation library page.
>
>> 3.) Any clue why this is hanging here? I should have a remote
>> debugger set up soon, but I have -nokdb set and I don't get any
>> kernel panics or reg dumps. The system just hangs.
>
>If my memory serves right, someone else had the same problem. For some
>strange reason L4Linux raised a page fault at this point and the page
>fault could not be resolved by the underlying pager. The L4Linux
>server now hangs in an endless loop trying to resolve the page
>fault. But I'm not sure about that. Michael?
>
>There is a possibility to monitor all page faults in the system, but I
>don't know, how you activate that.
>
>Jean
>--
>I get up each morning, gather my wits.
>Pick up the paper, read the obits.
>if I'm not there I know I'm not dead.
>So I eat a good breakfast and go back to bed. Peete Seeger
