Commit Graph

15 Commits

Author SHA1 Message Date
Max e0a7d9e2c2 Add octet-aligned/unaligned shift functions
The actual code is from OsmoBTS' tch.c by Harald Welte. Add unit tests,
doxygen annotation and extra memory safety check. Those functions are
used in several BTS implementations but seems generic enough to be
generally useful.

Change-Id: I2b1901c4161e8035f059585901dca593b661556d
2016-06-20 19:02:56 +02:00
Harald Welte 2d2e2cca0d Update doxygen annotations in libosmocore
This adds and improves doxygen API descriptions all over libosmocore,
reducing the 'white spots' that don't have any documentation.
2016-05-05 18:49:27 +02:00
Max d8fb14226f Add ubit <-> sbit convertors
Move functions for conversion between soft and unpacked bits to main
library as they are generally useful.
2016-04-12 10:10:44 -04:00
Max 08621a8ebb bitvec: Fix unaligned memory access in osmo_revbytebits_buf
The undefined behavior sanitizer found the 32bit load from an
unaligned memory address. This will cause an exception on ARMv5te
and a manual fix-up.

[hfreyther: On armv6, x86 the usage of memcpy leads to shorter
amount of instructions but on armv5te the memcpy is not expanded
leading to a branch. Use the version of max until we have the time
to benchmark it]

Sponsored-by: On-Waves ehf
2016-01-22 23:21:58 +01:00
Harald Welte 468b64331a add missing copyright statements to source code files
Some source code files didn't have the usual copyright and licence
statement at their top.  I'm adding them baesed on information in the
commitlog.
2014-09-11 13:18:08 +08:00
Katerina Barone-Adesi c28c6a02d2 misc: Doxygen tweaks: fixed some typos and minor errors
Doxygen generates quite a lot of warnings on libosmocore. Some of them
are obvious typos - this patch aims to fix such low-hanging fruit.
2013-02-15 13:27:59 +01:00
Harald Welte de6e4983e7 add some missing doxygen annotation for libosmocore functions 2013-01-11 09:43:32 +01:00
Sylvain Munaut 01e0604637 core/bits: Prevent osmo_revbytebits_buf stack trashing
The second loop in osmo_revbytebits_buf() in src/bits.c grabs
4 bytes each iteration, which can easily go past the supplied
input in some cases.

Compiled with -fstack-protector , I get a "stack smashing detected"
in the bits test.

From: Nils O. Selåsdal <noselasd@fiane.dyndns.org>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2013-01-03 09:37:16 +01:00
Sylvain Munaut dca7d2caaa doc: Fix the Doxygen section endings
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2012-04-18 21:53:23 +02:00
Harald Welte 712691d8d8 add functions for bit-reversal
Sometimes we need stuff like reversing every bit in each byte (but not
the byte-order).
2011-09-01 14:47:31 +02:00
Harald Welte ba6988bd89 some more doxygen work (include the notion of modules) 2011-08-17 17:14:11 +02:00
Pablo Neira Ayuso 8341934844 include: reorganize headers file to include/osmocom/[gsm|core]
This patch moves all GSM-specific definitions to include/osmocom/gsm.
Moreover, the headers in include/osmocore/ have been moved to
include/osmocom/core.

This has been proposed by Harald Welte and Sylvain Munaunt.

Tested with `make distcheck'.

Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
2011-03-23 18:09:28 +01:00
Christian Vogel c7f84e91b7 ubit2pbit flushes at the wrong moment, added one note to bits.h
(e.g. input2[] test sequence from testra/crc_test
 decodes incorrectly to packed bits: 90 b0 3e 80 03 87 53 bd 6f 08,
 this patch fixes it)
2011-01-22 22:48:37 +01:00
Sylvain Munaut aeb1077051 bits: Add extended options version of pbit2ubit and ubit2pbit
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2011-01-21 12:22:30 +01:00
Harald Welte 2230c133a6 [BITS] introduce new packed/unpacked bit conversion routines 2011-01-19 10:10:16 +01:00