From: "Richard B. Johnson" <root@chaos.analogic.com>
To: Linux kernel <linux-kernel@vger.kernel.org>
Subject: System Call parameters
Date: Wed, 16 Apr 2003 12:58:15 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.53.0304161256130.11667@chaos> (raw)
How does the kernel get more than five parameters?
Currently...
eax = function code
ebx = first parameter
ecx = second parameter
edx = third parameter
esi = fourth parameter
edi = fifth parameter
Some functions like mmap() take 6 parameters!
Does anybody know how these parameters get passed?
I have an "ultra-light" 'C' runtime library I have
been working on and, so-far, I've got everything up
to mmap() (in syscall.h) (89 functions) working.
I thought, maybe ebp was being used, but it doesn't
seem to be the case.
Maybe after 5 functions, there is a parameter list
passed by pointer???? I don't have a clue and I
can figure out the code, it's really obscure...
Cheers,
Dick Johnson
Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.
next reply other threads:[~2003-04-16 16:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-16 16:58 Richard B. Johnson [this message]
2003-04-16 17:41 ` System Call parameters Bruce Harada
2003-04-16 17:58 ` Richard B. Johnson
2003-04-16 17:47 ` Bruce Harada
2003-04-16 20:35 ` H. Peter Anvin
2003-04-17 0:39 Perez-Gonzalez, Inaky
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