On Mon, 19 Sep 2011, Laura Abbott wrote:
> The 64bit division functions never had unwinding annotations
> added. This prevents a backtrace from being printed within
> the function and if a division by 0 occurs. Add the annotations.
>
> Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
> ---
> arch/arm/lib/div64.S | 8 ++++++++
> 1 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/lib/div64.S b/arch/arm/lib/div64.S
> index faa7748..e55c484 100644
> --- a/arch/arm/lib/div64.S
> +++ b/arch/arm/lib/div64.S
> @@ -13,6 +13,7 @@
> */
>
> #include <linux/linkage.h>
> +#include <asm/unwind.h>
>
> #ifdef __ARMEB__
> #define xh r0
> @@ -44,6 +45,7 @@
> */
>
> ENTRY(__do_div64)
> +UNWIND(.fnstart)
>
> @ Test for easy paths first.
> subs ip, r4, #1
> @@ -189,7 +191,12 @@ ENTRY(__do_div64)
> moveq yh, xh
> moveq xh, #0
> moveq pc, lr
> +UNWIND(.fnend)
>
> +UNWIND(.fnstart)
> +UNWIND(.pad #4)
> +UNWIND(.save {lr})
> +Ldiv0_64:
Why this phony fnend+fnstart here?
Nicolas
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