[patch] Fix MIPS pipe, brk

[Mike Frysinger]

On Wednesday 04 January 2006 19:22, Atsushi Nemoto wrote:
> >>>>> On Wed, 4 Jan 2006 17:33:55 +0000 (UTC), "Joseph S. Myers"
> >>>>> <joseph at codesourcery.com> said:
>
> joseph> It turns out pipe.S was also buggy (crashing the program in
> joseph> the error case).  This patch fixes pipe.S and removes pipe.c.
> joseph> The previously sent brk.c patch should still be applied as
> joseph> well; a corresponding brk.c change is now in glibc.
>
> Hi.  In MIPS pipe function, there is no need to save/restore a0 on
> stack.  AFAIK kernel preserves a0 value on syscall entry/exit.  If a0
> was not preserved, it would be a bug in the kernel.
>
> And if a0 was preserved, there is no need to increment/decrement sp.
> It would make pipe.S simpler (as glibc's pipe implementation).

like the patch here right ?
http://bugs.uclibc.org/view.php?id=469
-mike