From: Ryan Martindale <ryan@qsicorp.com>
To: linux-mips@oss.sgi.com
Subject: Problem with gp
Date: Wed, 31 Jul 2002 11:44:03 -0700 [thread overview]
Message-ID: <3D482FF3.11F8CA0B@qsicorp.com> (raw)
I seem to be having troubles getting the CVS snapshot up and running.
I've debugged it, and it seems that the problem stems from the fact that
$28 (gp) is modified in the SAVE_SOME macro to point to somewhere on the
stack (not sure why this occurs). Anyways, when I get my first system
timetick interrupt, the update_process_times function fails to get the a
valid task structure pointer and wipes out. Why are we adjusting gp
here, since it is explicitly expected to hold only current_thread_info?
(in stackframe.h)
...
.macro SAVE_SOME
...
sw $25, PT_R25(sp)
sw $28, PT_R28(sp)
sw $31, PT_R31(sp)
ori $28, sp, 0x1fff
xori $28, 0x1fff
...
Ryan
next reply other threads:[~2002-07-31 17:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-31 18:44 Ryan Martindale [this message]
2002-07-31 19:04 ` Problem with gp Ralf Baechle
2002-08-01 0:04 ` Ryan Martindale
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