Re: [patch] RFA add dwarf calling convention support

[Richard Henderson <rth at redhat dot com>]

On Thu, Sep 30, 2004 at 02:56:17PM -0700, Eric Christopher wrote:
> +  value = targetm.dwarf_calling_convention (type);
> +  if (value)
> +    add_AT_unsigned (subr_die, DW_AT_calling_convention, value);
> +  else
> +    add_AT_unsigned (subr_die, DW_AT_calling_convention, DW_CC_normal);

I had asked for value == 0 to mean "i don't know", which
should mean "don't add DW_AT_calling_convention".

If we do know, then dwarf_calling_convention should just
return DW_CC_normal for normal functions.

> +int
> +default_dwarf_calling_convention (tree func ATTRIBUTE_UNUSED)
> +{
> +  return 0;
> +}

hook_int_tree_0, since there's nothing about this routine that
is specific to dwarf or calling conventions at all.

You may want a hook_dwarf_normal_calling_convention that always
returns DW_CC_normal, but that's something else.

> +Define this to enable the dwarf attribute DW_AT_calling_convention to
> +be emitted for each function.  Instead of an integer return the enum
> +value for the DW_CC_ tag.

Need some @code{} markup here.


r~