For DWARF v2, DW_AT_data_member_location is encoded as a set of operations. The member_offset is in that case a list that starts with an operation (typically DW_OP_plus_uconst), so member_offset[0] is not the offset.
This solves the kernel/poll test (issue #7885)
On some arches like ARC, the member location tag is a list with
the offset and then the member size. We just need the offset.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
If a variable is declared extern first, the name and type
information is stored in a special DW_DIE_variable which
is then referenced by the actual instances via the
tag DW_AT_specification.
We now place extern variable instances in an extern environment
and use this data to fetch the name/type of the instances,
which do not have it (which is why they were being skipped).
As it turns out, the gross hack for the system workqueue was
due to this problem because of the extern declaration in
kernel.h.
Fixes: #6992
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This patch adds a python helper library that encapsulates the ELF
processing being done across multiple scripts. Users of this script
will be converted over in a following patch.
Signed-off-by: Andy Gross <andy.gross@linaro.org>
