On Mon, Oct 09, 2017 at 07:00:52PM +0200, Marcin Wojtas wrote:
> From: Ard Biesheuvel <ard.biesheu...@linaro.org>
> 
> To avoid dereferencing junk when walking the call stack in exception
> handlers (which may prevent us from getting a full backtrace), set
> the frame pointer to 0x0 when first entering UEFI.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
> Signed-off-by: Marcin Wojtas <m...@semihalf.com>

Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org>

> ---
>  Platform/Marvell/Armada/Library/Armada70x0Lib/AArch64/ArmPlatformHelper.S | 
> 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git 
> a/Platform/Marvell/Armada/Library/Armada70x0Lib/AArch64/ArmPlatformHelper.S 
> b/Platform/Marvell/Armada/Library/Armada70x0Lib/AArch64/ArmPlatformHelper.S
> index 9265636..72f8cfc 100644
> --- 
> a/Platform/Marvell/Armada/Library/Armada70x0Lib/AArch64/ArmPlatformHelper.S
> +++ 
> b/Platform/Marvell/Armada/Library/Armada70x0Lib/AArch64/ArmPlatformHelper.S
> @@ -16,6 +16,7 @@
>  #include <Library/ArmLib.h>
>  
>  ASM_FUNC(ArmPlatformPeiBootAction)
> +  mov   x29, xzr
>    ret
>  
>  //UINTN
> -- 
> 1.8.3.1
> 
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