In libdwarves.so well continue using DW_TAG_ entries and types for now, but its
becoming non-DWARF specific as will be demonstrated with the introduction of
ctf_loader.c in the upcoming csets.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
memdup() is only referenced from dwarves.c. This patch defines them
static. Further symbol hiding can be accomplished via GCC attributes:
Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Almost halves the time spent on processing a x86_64 vmlinux. Good, we
have features, now lets have performance ;-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This will print which object files have a struct definition, i.e. not just a
forward declaration.
There are many cases in the Linux kernel where just a fwd decl would suffice or outright
unneeded includes that end up bloating the DWARF sessions and consequently making everybody
suffer with humongous kernel-debuginfo packages.
More automation is needed here, this time something like sparse seems to be
needed to check what is that a header file "provides" and what is that the C
files "requires", doing some depsolving to discover unneeded Requires, i.e.
include directives and some that are required but are only satisfied
indirectly, which is a recipe for problems down the line.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Found in at least a file (tcp_ipv6.c in the Linux kernel) built with gcc
version 4.3.0 20080130 (Red Hat 4.3.0-0.7).
Which seems to be in violation with DWARF3, but better be defensive and handle
that.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
If passed as the old file, all functions in the new file will appear as being
new, etc.
Suggested by Ilpo Järvinen.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
It will return NULL, this will be useful for codiff to use /dev/null as one of
the files being compared. And if you look for something in NULL, you better
get NULL, seems like a useful convention, huh?
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Speeding up the process, no need to check for changes in the same object file,
be it standalone or part of a multi-cu file.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
What a mouthful ;-) To be used in finding the most aligned member in a non-packed
type, i.e. one that originally wasn't __attribute__((packed)).
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
That is not present in stable distros, where people trying the dwarves, for
now, should just disable build id support in this awkward way till I find out
how to do it properly using cmake.
Or you can get so annoyed to the point of submitting a patch to fix this ;-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Forgotten change similar to the previous patch.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
And add copyright and license information in ostra.py. Thanks to Thomas Girard
for the suggestions.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Now at creation time we specify if the strings must be allocated or if using
the pointer directly.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This was found on an old openbsd kernel image that Leonardo Chiquito built
enabling DWARF instead of the default, STABS debugging format 8)
Just this struct has this characteristic:
struct ricoh_is410_window_data {
struct scsi_window_data window_data; /* 0 48 */
u_int8_t res1; /* 48 1 */
u_int8_t res2; /* 49 1 */
/* Bitfield combined with previous fields */
u_int mrif:1; /* 48:15 4 */
u_int filtering:3; /* 48:12 4 */
u_int gamma_id:4; /* 48: 8 4 */
/* size: 52, cachelines: 1 */
/* bit_padding: 24 bits */
/* last cacheline: 52 bytes */
};
Now there are no BRAIN FART ALERT!s when paholing openbsd, yay!
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo
Felipe Kellermann
Hagen Paul Pfeifer
Ilpo Järvinen