asm-ppc64/ptrace.h / fscpr

[Marcus Meissner]

On Wed, May 19, 2004 at 03:17:30PM -0500, Steve Munroe wrote:
> Marcus Meissner <meissner at suse.de> wrote on 05/19/2004 10:44:26 AM:
>
> > The fpscr offset is wrong, it is at position 32 in the FPR array on
> > ppc64.
> >
> > Found by IBM gdb testing.
> >
> > I have the vague suspicion the ptrace32 compat handling might be
> > broken too, but I have to check.
>
> #define PT_FPR0 48
> #define PT_FPSCR (PT_FPR0 + 32 + 1)
>
> So how is this wrong? Is the kernel storing the FPSCR in the wrong
> slot?

The thread array has it at fpr[32], so it should be there too in that define:

        double          fpr[32];        /* Complete floating point set */
	unsigned long   fpscr;          /* Floating point status (plus pad) */

since ptrace just copies it out of that struct directly.

ciao, Marcus

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