[Dwarf-Discuss] [PATCH v2] ARC: gas: Generate offset with Default CFA

Michael Eager eager at eagercon.com
Mon Jun 27 08:05:54 PDT 2016


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On 06/27/2016 06:41 AM, Vineet Gupta wrote:
> This makes the kernel dwarf stack unwinder work again which expects an
> offset with default CFA in the initial instructions.
>
> gas	* config//tc-arc.c (tc_arc_frame_initial_instructions): Use
> 	cfi_add_CFA_def_cfa to generate default CFA with offset
>
> Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
> ---
>   gas/ChangeLog       | 5 +++++
>   gas/config/tc-arc.c | 2 +-
>   2 files changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/gas/ChangeLog b/gas/ChangeLog
> index 2a28352f77a6..0033f91865e1 100644
> --- a/gas/ChangeLog
> +++ b/gas/ChangeLog
> @@ -1,3 +1,8 @@
> +2016-06-27  Vineet Gupta <vgupta at synopsys.com>
> +
> +	* config//tc-arc.c (tc_arc_frame_initial_instructions): Use
> +	cfi_add_CFA_def_cfa to generate default CFA with offset
> +
>   2016-06-27  Trevor Saunders  <tbsaunde+binutils at tbsaunde.org>
>
>   	* config/tc-dlx.c: Include bfd/elf32-dlx.h.
> diff --git a/gas/config/tc-arc.c b/gas/config/tc-arc.c
> index 575582178209..f651600746de 100644
> --- a/gas/config/tc-arc.c
> +++ b/gas/config/tc-arc.c
> @@ -4160,7 +4160,7 @@ void
>   tc_arc_frame_initial_instructions (void)
>   {
>     /* Stack pointer is register 28.  */
> -  cfi_add_CFA_def_cfa_register (28);
> +  cfi_add_CFA_def_cfa(28, 0);
>   }
>
>   int
>


-- 
Michael Eager	 eager at eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077


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