On Thu, 3 Jul 2025 at 08:20, Heinrich Schuchardt <heinrich.schucha...@canonical.com> wrote: > > U-Boot may be compiled with frame pointers depending on defaults built into > compilers are via explicitly passing -fno-omit-frame-pointer. > > To stop walking frames it is necessary that the initial value of the frame > pointer register is 0. > > Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodi...@linaro.org> > --- > arch/arm/lib/crt0_64.S | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S > index f3f279f2c39..3ff0577e9c8 100644 > --- a/arch/arm/lib/crt0_64.S > +++ b/arch/arm/lib/crt0_64.S > @@ -168,6 +168,7 @@ clear_loop: > /* call board_init_r(gd_t *id, ulong dest_addr) */ > mov x0, x18 /* gd_t */ > ldr x1, [x18, #GD_RELOCADDR] /* dest_addr */ > + mov x29, 0 /* frame pointer */ > b board_init_r /* PC relative jump */ > > /* NOTREACHED - board_init_r() does not return */ > -- > 2.48.1 >
