In preparation for adding an automated test framework,
add an ability to create-object-diff that will create
a human readable list of included sections and symbols
with type and bind information so that the test framework
can compare against a known-good reference list with the
expected set of sections and symbols.
The file is created when the -i/--inventory option is
used. The inventory filename is the user supplied output
file name suffixed by .inventory
Signed-off-by: Seth Jennings <sjenning@redhat.com>
I'm tired of setting CFLAGS and people shouldn't have to
recompile to get debug output. This lays the foundations
proper option handling and logging levels.
Signed-off-by: Seth Jennings <sjenning@redhat.com>
- Fixup debug messages
- Remove dead code
- No more DEPENDENCY state
- Reachability test is now the "Inclusion tree" for determining
which syms/sections will be included in the output
- 'reachable' field is now and 'include' and is the sole
consideration in including sections/symbols (no more complex
conditional checks)
- Order LOCAL before GLOBAL in the symbol table. Apparently, after
a FILE sym, all LOCAL symbols should precede GLOBAL syms or readelf
shows <corrupt>
- Handle __ksymtab_strings section and __ksymtab_* syms
Signed-off-by: Seth Jennings <sjenning@redhat.com>
NOBITS section may have a non-zero size, however, the have no data and
the data descriptor will have d_buf set to NULL.
This commit fixes as segfault that occurs from trying to compare the
data of such sections.
Signed-off-by: Seth Jennings <sjenning@redhat.com>
There are cases in which the compiler will create symbols with NOTYPE
that map to a non-zero offset inside an .rodata section. In that case, there
may not be a one-to-one relationship between that symbol and section as
the section may contains the data for multiple NOTYPE symbols.
This commit checks for this case and does not assign the symbol pointer of the
section that contains its data to avoid multiple symbols referring to the same
section from overwriting one another. It also adds a check ensuring that all
symbols whose type is !NOTYPE start at offset 0 within the section. This
should be guarenteed by the -ffunction-sections and -fdata-sections options
compiler options.
Signed-off-by: Seth Jennings <sjenning@redhat.com>
