The Sframe V2 has a new errata which introduces the
SFRAME_F_FDE_FUNC_START_PCREL flag. This flag indicates the encoding
of the SFrame FDE function start address field like this:
- if set, sfde_func_start_address field contains the offset in bytes
to the start PC of the associated function from the field itself.
- if unset, sfde_func_start_address field contains the offset in bytes
to the start PC of the associated function from the start of the
SFrame section.
Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com>
Reviewed-by: Sam James <sam@gentoo.org>
This patch adds the necessary bits to enable stack tracing using
SFrame. In the case the new SFrame stack tracing procedure doesn't
find SFrame related info, the stack tracing falls back on default
Dwarf implementation.
The new SFrame stack tracing procedure is added to debug/backtrace.c
file, the support functions are added in sysdeps folder, namely
sframe.h, read-sframe.c and read-sfame.h.
Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com>
Reviewed-by: DJ Delorie <dj@redhat.com>
