Subject: Re: Incorrect order of last two arguments of ptrace for requests PPC_PTRACE_GETREGS, SETREGS, GETFPREGS, SETFPREGS

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 23 Nov 2006 08:35:43 +1100

On Wed, 2006-11-22 at 18:36 +0000, David Woodhouse wrote:
> On
> > This is because PPC_PTRACE_GETREGS option for powerpc is implemented 
> > such that general purpose
> > registers of the child process get copied to the address variable 
> > instead of data variable. Same is
> > the case with other PPC request options PPC_PTRACE_SETREGS, GETFPREGS 
> > and SETFPREGS.
> > 
> > Prepared a patch for this problem and tested with 2.6.18-rc6 kernel. 
> > This patch can be applied directly to 2.6.19-rc3 kernel.
> 
> A more appropriate place to send this would be the linux-ppc development
> list.

Also it's possible that existing code like gcc relies on that "feature"
no ?

Ben.