From: Chandra Kapate <cs_kapate@yahoo.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] A clarification about sys32_execve/ia32_execve
Date: Fri, 04 Apr 2003 17:50:16 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705421@msgid-missing> (raw)
Hi,
I was looking at how execve syscalls work wrt to 32/64
syscalls. I have a basic question. I appreciate if
some once can clarify. I apologize if I am overlooking
some thing very obvious.
The ia32_execve (in ia32_entry.S) sets up out0, out1,
out2 and out3 before invoking sys32_execve. The out3
is setup for regs. But, in sys32_execve, the regs
is set locally using 9th parameters. I can see how
the regs is set using 9th parameter. I don't
understand why is set again in sys32_execve
when it is already set in out3 in ia32_execve and
could have used as 4th parameter? Does args mis-match
between ia32_execve and sys32_execve matter?
OTH, sys_execve does use the regs set in ia64_execve.
Sorry, if i am overlooking something.
Thanks,
Chandra
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next reply other threads:[~2003-04-04 17:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-04 17:50 Chandra Kapate [this message]
2003-04-07 21:26 ` [Linux-ia64] A clarification about sys32_execve/ia32_execve David Mosberger
2003-04-08 13:28 ` Chandra Kapate
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