From: Scott Anderson <scott_anderson@mvista.com>
To: Raghava Raju <vraghava_raju@yahoo.com>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: program counter...
Date: Mon, 20 Aug 2001 10:46:36 -0700 [thread overview]
Message-ID: <3B814CFC.23A3C030@mvista.com> (raw)
In-Reply-To: 20010817171437.97580.qmail@web20003.mail.yahoo.com
Raghava Raju wrote:
> I was unable to find the registers for
> program counter,stack pointer. Which registers
> I should use to access these values in powerpc.
Er, there isn't really an program counter register that you can read.
The only way I know to find it out the value of the internal "Next
Instruction Address" is to do a bl and then look at the LR (link
register) before doing a blr.
As far as the stack pointer goes, the PowerPC ABI (Application Binary
Interface) states that gpr1 should be used as the stack pointer and
therefor, it is...
Scott Anderson
scott_anderson@mvista.com MontaVista Software Inc.
(408)328-9214 1237 East Arques Ave.
http://www.mvista.com Sunnyvale, CA 94085
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-08-20 17:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-17 17:14 program counter Raghava Raju
2001-08-20 17:46 ` Scott Anderson [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-08-17 17:13 Raghava Raju
2001-08-17 17:24 ` David Edelsohn
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