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Re: [PATCH, RFC] MIPS: Implement the getcontext API
- From: Ralf Baechle <ralf at linux-mips dot org>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>
- Cc: "Maciej W. Rozycki" <macro at codesourcery dot com>, linux-mips at linux-mips dot org, libc-ports at sourceware dot org, "Maciej W. Rozycki" <macro at linux-mips dot org>
- Date: Sat, 18 Apr 2009 14:38:15 +0200
- Subject: Re: [PATCH, RFC] MIPS: Implement the getcontext API
- References: <alpine.DEB.firstname.lastname@example.org> <Pine.LNX.email@example.com>
On Wed, Apr 15, 2009 at 08:19:33PM +0000, Joseph S. Myers wrote:
> > Here is code to implement the getcontext API for MIPS. This glibc patch
> > is sent to the linux-mips mailing list, because it makes use of an
> > internal syscall which has not been designated as a part of the public
> > ABI. I am writing to request this syscall to become fixed as a part of
> > the ABI or to seek for an alternative. See below for the rationale.
> Was there any conclusion about whether the assumptions this patch makes
> about the kernel are OK (and so it can go in) or not?
I've probably not spelled it out clearly enough in an earlier email on
this topic but yes, I think it's ok. In all reality the stackframe has
de facto become a part of the ABI that needs to be kept stable.