In reponse to https://bugzilla.redhat.com/show_bug.cgi?id=497285 I
included the header files that are needed by the dwarves*.h files
and moved them to /usr/include/dwarves.h.
The CTF work is not completed yet, but the non-CTF related improvements
(progressive loading of CUs, etc) are worth a release till I can get back to
dedicate solid time for developing these tools again.
Reported-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Sharing the same space with abstract_origin, so that we can remove the last
Dwarf_Off in dwarf_fprintf.c.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
We do this by just creating a strlist with all the functions that are in
section ".init.text", as found out by looking at the symtab.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
In the past we did integer testing, and testing against 0 was no problem, but
now they return NULL and we are back using strcmp, oops.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
I.e. the operation may fail because the string is already there or
because there wasn't enough memory.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
So that we can more early return if we can't process files for some supported
debugging format and as well release all resources allocated when dwarves__exit
is called.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
There is still the problem of handing the strings table to the CTF encoder, but
that will be fixed another day.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
So that we can use the strings in ".strtab" directly, without duplicating them
on the global strings table.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Instead pass thru cu__strings(cu, i) so that we can figure out if the
underlying debugging format handler can do that more efficiently, such as by
looking up directly the ELF section ".strtab".
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
It ain't gonna be like that soon, when every cu that comes from a CTF file will
have all its strings_t pointing to strings in .strtab.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Such as signed, etc. This is in preparation for using directly ctf_strings.
Instead of duplicating it in the global strings table.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
That became cached when we moved to CTF like bitfields, i.e. each bit size
creates a new type so that the encoding for class members can have just the
name, type and bit_offset.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
ctracer was segfaulting due to this problem.
Reported-by: Breno Leitão <leitao@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Temporary hack till I figure out how to do more filtering on the variables on
the symtab that aren't in the DWARF info.
Problem is that if we don't put something on the table at encode time, we won't
find it at decode time, when we don't have DWARF to notice that its not there
because its not in DWARF.
We then discard it at load time, as "void foo;" doesn't make sense.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
And not compare by string_t, as now it may not be on the global strings table,
so we have to give a chance to the underlying debug format to translate that to
a string for us.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
In the paste we ass-umed that if cu->dfops != NULL, all the methods would be
there, this ain't so anymore, so check it.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
That is done by adding some new struct debug_fmt_ops methods:
->function__name()
This one, if specified, will be called by function__name(), giving a chance to
formats such as CTF to get this from some other place than the global strings
table. CTF does this by storing GElf_Sym->st_name in function->name, and by
providing a dfops->function__name() that uses function->name as an index into
the .strtab ELF section.
->cu__delete()
This is needed because we can't anymore call ctf__delete at the end of
ctf__load_file, as we will need at least the .strstab ELF section to be
available till we're done with the cu, i.e. till we call cu__delete(), that now
calls dfops->cu__delete() if it is available.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
There are more things that should be handled differently, such as function
names coming from the .strtab ELF section instead of from the global strings_t
table.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Temporary hack till I figure out how to do more filtering on the functions on
the symtab that aren't in the DWARF info.
Problem is that if we don't put something on the table at encode time, we won't
find it at decode time, when we don't have DWARF to notice that its not there
because its not in DWARF.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Just use cu__for_each_struct and cu__for_each_function, newer functions that
are more appropriate and make the code more easy to follow.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To cover the case where there aren't structs or even any type at all.
It looks now just like cu__for_each_function, so its more consistent as a bonus
:-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo