From: David Edelsohn <dje@watson.ibm.com>
To: Dave Weis <djweis@plconline.com>
Cc: linuxppc-dev@lists.linuxppc.org
Subject: Re: modifying boot loader
Date: Mon, 29 Mar 1999 18:36:50 -0500 [thread overview]
Message-ID: <9903292336.AA42910@marc.watson.ibm.com> (raw)
In-Reply-To: Message from Dave Weis <djweis@plconline.com> of "Mon, 29 Mar 1999 15:48:07 CST." <Pine.LNX.3.95.990329154458.29373G-100000@catbert.desm.plconline.com>
What are you actually trying to accomplish? The values at
pin_obj_start are not magic numbers or instructions but user-friendly
values mapped at address 0. It is trying to map values 0x0 and 0XBADFCA11
(bad function call) so that dereferencing a data pointer or a PowerOpen
ABI function pointer at address zero (0) will produce a visual clue. This
is produced by assembly like:
addr0:
.long 0
.long 0xBADFCA11
And you make the linker map label addr0 at physical address 0.
David
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next prev parent reply other threads:[~1999-03-29 23:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-03-29 21:48 modifying boot loader Dave Weis
1999-03-29 23:36 ` David Edelsohn [this message]
1999-03-29 23:38 ` Dave Weis
1999-03-29 23:49 ` David Edelsohn
1999-03-30 3:05 ` Dave Weis
1999-03-30 4:05 ` David Edelsohn
1999-03-30 4:25 ` Dave Weis
1999-03-30 8:13 ` Gabriel Paubert
1999-03-30 14:51 ` David A. Gatwood
1999-03-31 7:12 ` Erik Karlberg
1999-03-30 9:38 ` Gary Thomas
-- strict thread matches above, loose matches on Subject: below --
1999-03-30 9:52 Andrew J Benie
1999-03-30 14:12 ` Norman R Weathers
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