From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] EFI/SAL question
Date: Thu, 14 Nov 2002 18:39:28 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590709805432@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590709805425@msgid-missing>
>>>>> On Thu, 14 Nov 2002 12:30:34 +0100, Christian Hildner <christian.hildner@hob.de> said:
Christian> Hi, does EFI (runtime services) or SAL calls use the
Christian> global pointer? If yes, how must gp initialized before
Christian> doing the call (from assembly)?
Yes, both use GP. For SAL, the GP is provided via the
SAL_DESC_ENTRY_POINT descriptor (page 419 in the ia64 linux kernel
book). For EFI, the runtime services routines are given as normal
function pointers (so they contain both code entry point and gp).
--david
prev parent reply other threads:[~2002-11-14 18:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-14 11:30 [Linux-ia64] EFI/SAL question Christian Hildner
2002-11-14 18:39 ` David Mosberger [this message]
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