[PATCH] Support AT_BSDFLAGS on FreeBSD.

[Simon Marchi]

Hi John,

Could you please add a commit message that summarizes what this is (you can link
to existing documentation) and what is the intent of this change?  Are there some
user-visible changes, what are they?

Thanks,

Simon

On 2020-03-25 1:25 p.m., John Baldwin wrote:
> include/ChangeLog:
> 
> 	* elf/common.h (AT_FREEBSD_BSDFLAGS): Define.
> 
> gdb/ChangeLog:
> 
> 	* fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_FREEBSD_BSDFLAGS.
> ---
>  gdb/ChangeLog        | 4 ++++
>  gdb/fbsd-tdep.c      | 1 +
>  include/ChangeLog    | 4 ++++
>  include/elf/common.h | 1 +
>  4 files changed, 10 insertions(+)
> 
> diff --git a/gdb/ChangeLog b/gdb/ChangeLog
> index 5400a4e348..782e955358 100644
> --- a/gdb/ChangeLog
> +++ b/gdb/ChangeLog
> @@ -1,3 +1,7 @@
> +2020-03-25  John Baldwin  <jhb@FreeBSD.org>
> +
> +	* fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_FREEBSD_BSDFLAGS.
> +
>  2020-03-25  Hannes Domani  <ssbssa@yahoo.de>
>  
>  	* windows-nat.c (windows_add_all_dlls): Fix system dll paths.
> diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
> index ffffb18700..54f5149e5c 100644
> --- a/gdb/fbsd-tdep.c
> +++ b/gdb/fbsd-tdep.c
> @@ -1597,6 +1597,7 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
>        TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX);
>        TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX);
>        TAG (HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
> +      TAG (BSDFLAGS, _("ELF BSD flags"), AUXV_FORMAT_HEX);
>      }
>  
>    fprint_auxv_entry (file, name, description, format, type, val);
> diff --git a/include/ChangeLog b/include/ChangeLog
> index 3d26a570ca..3f3e3caa0f 100644
> --- a/include/ChangeLog
> +++ b/include/ChangeLog
> @@ -1,3 +1,7 @@
> +2020-03-25  John Baldwin  <jhb@FreeBSD.org>
> +
> +	* elf/common.h (AT_FREEBSD_BSDFLAGS): Define.
> +
>  2020-03-24  Martin Liska  <mliska@suse.cz>
>  
>  	PR lto/94249
> diff --git a/include/elf/common.h b/include/elf/common.h
> index 1c84ccb430..6741c34a00 100644
> --- a/include/elf/common.h
> +++ b/include/elf/common.h
> @@ -1251,6 +1251,7 @@
>  #define AT_FREEBSD_EHDRFLAGS    24      /* e_flags field from ELF header. */
>  #define AT_FREEBSD_HWCAP        25      /* CPU feature flags. */
>  #define AT_FREEBSD_HWCAP2       26      /* CPU feature flags 2. */
> +#define AT_FREEBSD_BSDFLAGS     27      /* ELF BSD Flags. */
>  
>  #define AT_SUN_UID      2000    /* Effective user ID.  */
>  #define AT_SUN_RUID     2001    /* Real user ID.  */
> -- 
> 2.25.1
>