From: David Mosberger <davidm@hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] unaligned access?
Date: Wed, 28 Nov 2001 18:25:58 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590698805557@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590698805553@msgid-missing>
>>>>> On Wed, 28 Nov 2001 09:37:51 -0800, "Pereira, D LailaX E" <d.lailax.e.pereira@intel.com> said:
>> HI While running the following code, define
>> WRITE_CAUSED_SIGBUS_or_SEGV \ (((*(unsigned
>> long*)scp->sc_ip)>>21)&1) .... if (WRITE_CAUSED_SIGBUS_or_SEGV){
>> ........ } else { ......... }
>> I get the following error on the "if " statement:
>> stress.udp(31438): unaligned access to
>> 0x4000000000003541,ip=0x4000000000015fc1 Please let me know what
>> is wrong with the macro: define WRITE_CAUSED_SIGBUS_or_SEGV \
>> (((*(unsigned long*)scp->sc_ip)>>21)&1)
The least significant two bits of sc_ip encode the slot number. You
need to take those bits into account when reading an instruction from
a bundle.
--david
next prev parent reply other threads:[~2001-11-28 18:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-28 17:37 [Linux-ia64] unaligned access? Pereira, D LailaX E
2001-11-28 17:47 ` Dan Pop
2001-11-28 17:56 ` Pereira, D LailaX E
2001-11-28 17:57 ` n0ano
2001-11-28 18:25 ` David Mosberger [this message]
2001-11-28 19:18 ` Dan Pop
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