[PATCH 3/3] tools/perf/arch/powerc: Add get_arch_regnum for powerpc

[Namhyung Kim]

Hello,

On Tue, Mar 26, 2024 at 2:35 AM Tiezhu Yang <yangtiezhu at loongson.cn> wrote:
>
> Hi Athira and Namhyung,
>
> On 03/09/2024 03:25 PM, Athira Rajeev wrote:
> > The function get_dwarf_regnum() returns a DWARF register number
> > from a register name string. This calls arch specific function
> > get_arch_regnum to return register number for corresponding arch.
> > Add mappings for register name to register number in powerpc code:
> > arch/powerpc/util/dwarf-regs.c
> >
> > Signed-off-by: Athira Rajeev <atrajeev at linux.vnet.ibm.com>
> > ---
> >  tools/perf/arch/powerpc/util/dwarf-regs.c | 29 +++++++++++++++++++++++
> >  1 file changed, 29 insertions(+)
>
> I found commit 3eee606757ad ("perf dwarf-regs: Add get_dwarf_regnum()")
> for x86, would you be able to share how to test these changes? What is
> the difference with and without the patches?

Hmm.. I guess it won't work well without the patch.  This is
needed to map register numbers (from objdump) to what
DWARF can understand (IOW they use different numbers).

Thanks,
Namhyung