Ram Pai <linux...@us.ibm.com> writes:
> diff --git a/arch/powerpc/include/uapi/asm/ptrace.h
> b/arch/powerpc/include/uapi/asm/ptrace.h
> index 8036b38..109d0c2 100644
> --- a/arch/powerpc/include/uapi/asm/ptrace.h
> +++ b/arch/powerpc/include/uapi/asm/ptrace.h
> @@ -49,6 +49,8 @@ struct pt_regs {
> unsigned long dar; /* Fault registers */
> unsigned long dsisr; /* on 4xx/Book-E used for ESR */
> unsigned long result; /* Result of a system call */
> + unsigned long dscr; /* contents of the DSCR register */
> + unsigned long amr; /* contents of AMR register */
> };
You can't change pt_regs, it's ABI.
> @@ -109,7 +111,8 @@ struct pt_regs {
> #define PT_DSISR 42
> #define PT_RESULT 43
> #define PT_DSCR 44
> -#define PT_REGS_COUNT 44
> +#define PT_AMR 45
> +#define PT_REGS_COUNT 45
You can add PT_AMR, but it has to be synthetic like DSCR, ie. not
actually in pt_regs but available via ptrace.
But do we want to do that? How does the x86 code export the key(s) of a
process? Or doesn't it?
cheers
