[rfc] bi-arch for x86-64 corefile.

[Yao Qi]

On 10/30/2012 03:21 PM, H.J. Lu wrote:
> I am checking in this.  But sourceware.org times out for me.  Please
> give it a try.
>

H.J., it works for me!  Thanks for the review and checking it in.

> diff --git a/bfd/configure b/bfd/configure
> index fdf5356..427e5c1 100755
> --- a/bfd/configure
> +++ b/bfd/configure
> @@ -13927,6 +13927,10 @@ if test "${target}" = "${host}"; then
>     i[3-7]86-*-linux-*)
>   	COREFILE=trad-core.lo
>   	TRAD_HEADER='"hosts/i386linux.h"'
> +	case "$enable_targets" in
> +	*x86_64-*linux*)
> +	  CORE_HEADER='"hosts/x86-64linux.h"'
> +	esac
>   	;;
>     i[3-7]86-*-isc*)	COREFILE=trad-core.lo ;;
>     i[3-7]86-*-aix*)	COREFILE=aix386-core.lo ;;

This part is a little different from my original patch, which is

+	if test x${want64} = xtrue ; then
+	CORE_HEADER='"hosts/x86-64linux.h"'
+	fi

This requires something different in configure options.  In my previous 
patch, when configure i686-pc-linux-gnu-gdb to handle bi-arch, we run 
configure with '--enable-64-bit-bfd'.  In current trunk (w/ your patch), 
we have to run configure with '--enable-targets=x86_64-pc-linux-gnu'.

Copy gdb@ here to make sure GDB people are aware of this change, 
otherwise, configuring gdb with '--enable-64-bit-bfd' only still doesn't 
work for handling x86-64 corefile on x86 gdb.

-- 
Yao