[PATCH] aarch64: Add unwind information to _start (bug 26853)

[Szabolcs Nagy]

The 11/09/2020 12:06, Florian Weimer via Libc-alpha wrote:
> This adds CFI directives which communicate that the stack ends
> with this function.
> 
> Fixes bug 26853.

this looks good.
thanks.


> 
> ---
>  sysdeps/aarch64/start.S | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/sysdeps/aarch64/start.S b/sysdeps/aarch64/start.S
> index 75393e1c18..108f602721 100644
> --- a/sysdeps/aarch64/start.S
> +++ b/sysdeps/aarch64/start.S
> @@ -43,11 +43,9 @@
>   */
>  
>  	.text
> -	.globl _start
> -	.type _start,#function
> -_start:
> -	BTI_C
> +ENTRY(_start)
>  	/* Create an initial frame with 0 LR and FP */
> +	cfi_undefined (x30)
>  	mov	x29, #0
>  	mov	x30, #0
>  
> @@ -103,6 +101,7 @@ _start:
>  __wrap_main:
>  	b	main
>  #endif
> +END(_start)
>  
>  	/* Define a symbol for the first piece of initialized data.  */
>  	.data
> 
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