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From: Kean Johnston <jkj@sco.com>
To: Mike Stump <mrs@apple.com>
Cc: gcc@gcc.gnu.org
Subject: Re: Guidance please: static or extern __inline__
Date: Fri, 29 Jul 2005 22:03:00 -0000	[thread overview]
Message-ID: <42EAA797.4090603@sco.com> (raw)
In-Reply-To: <4195377E-0076-11DA-BCD4-003065BDF310@apple.com>

>> That's a pretty neat trick.
> 
> 
> I know, we've filed a patent for it, wait for it, no, wait, ok, just 
> kidding...  :-)
Hehehehe :)

> 
>> I dont suppose I could trouble you to give me the voodoo required for
>> inserting an extra pushl before the call could I?
> 
> 
> Not sure exactly what you want, but with the below I think it will be 
> obvious how to do it.
> 
> void ioctl(int, unsigned long, char *) __attribute__((always_inline));
> asm inline void ioctl(int fd, unsigned long m, char *buf) {
>         movl    #42, 12($esp)
>         movl    fd, 8($esp)
>         movl    m, 4($esp)
>         movl    buf, ($esp)
>         call    _xioctl
>         xorl    $eax, $eax
>         leave
>         ret
> }
That does help with teh general mechanism. Unfortunately I can't
use inline, becuase ioctl is supposed to be declared as
int ioctl (int, int, ...);. I dont think you can have variadic
inline's can you?

This whole notion of fixing ABI issues in header files makes
my you-know-what's ache.  Of course the *rest* of the world
has decent symbol versioning, but some of us are left in the
approximate mid-90's :(

I think I may just cheat and declare ioctl incorrectly, and
put in the 3rd arg. I suspect that is the path of least
resistance, although I have no doubt it will break some
standard. But since I'm shooting for a working, real-world
compiler, I find myself strangely comfortable with the idea
of ignoring a miniscule subclause here and there in a
standard I'm not certifying to :)

Thanks for all your help tho. It's much appreciated.

Kean

      reply	other threads:[~2005-07-29 22:03 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-28 16:12 Kean Johnston
2005-07-28 16:37 ` Gabriel Dos Reis
2005-07-28 17:49   ` Kean Johnston
2005-07-28 17:54 ` Daniel Jacobowitz
2005-07-28 18:32   ` Kean Johnston
2005-07-28 18:54     ` Daniel Jacobowitz
2005-07-28 19:05 ` Mike Stump
2005-07-28 19:43   ` Kean Johnston
2005-07-28 20:15     ` Gabriel Dos Reis
2005-07-28 20:33       ` Kean Johnston
2005-07-28 20:54     ` Mike Stump
2005-07-29 20:23       ` Kean Johnston
2005-07-29 21:18         ` Mike Stump
2005-07-29 22:03           ` Kean Johnston [this message]

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