The PCU is using bitvec_write_field a lot but on the
arm-poky-linux-gnueabi-gcc v4.8.1 the calls to set_bit and
set_bit_pos are not inlined. The inlined variant has been
a more quick for the PCU compressed bitmap decompression
testcase.
Used objdump -d to look at the bitvec_write_field before and
after the change. The branch to bitvec_set_bit is gone and a
inlined version has been used.
Change-Id: I0b6b90610f4c17f02e4efa064c3bf1ac2dccb22a
The input data is accessed in a read-only manner, so it should be marked
with the const qualifier.
Change-Id: I0d6b86289fa647594f3da1f1c0e0168685307a37
Add function which adds specified number of bits from each element of
array to the bit vector prefixing each addition with one and finishing
entire sequence with adding 0. This is very common patter for various
repetitive data structures described with CSN.1 in 3GPP standards.
Corresponding test vectors and doxygen headers are added too.
int << 31 does not seem to be defined, let's try to make it an
unsigned variable and see if that is pleasing the system.
Fixes:
bitvec.c:219:15: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
bitvec_read_field/bitvec_write_field in the PCU used a C++ reference
and when porting to C it was decided to pass the parameter by value
and this lost the "back propagation" of the new index. Change the
parameter to be an in/out parameter and this way do not have a silent
semantic break in the osmo-pcu (where we copy the reference in csn.1
by value) and have a true compile failure.
Add Max's simple test for bitvec_unhex function leaving the checking
of bitvec_read_field and the side effect in the datastructure about
the number of bits still open.
bitvec.c: In function 'bitvec_unhex':
bitvec.c:389: error: 'for' loop initial declarations are only allowed in C99 mode
bitvec.c:389: note: use option -std=c99 or -std=gnu99 to compile your code
Allocation, pack/unpack, field access and helper routines used
extensively by Osmo-PCU. Whenever memory allocation happens, alocator
context is passed explicitly by caller.
The new functions bitvec_get_bytes and bitvec_set_bytes copy
byte sequences from bitvecs to uint8_t arrays and vice versa.
While the bytes in the bitvecs do not need to be aligned, the uint8_t
arrays always are. In case the bytes in the bitvec are aligned, the
implementation uses memcpy.
Note that the implementation like the other existing functions assume
MSB first encoding.
[hfreyther: Squash the comment fix into this commit as well]
Sponsored-by: On-Waves ehf
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>
it returns if a given bit in the vector is "high" or "low".
the bitval that represents "high" depends on the bit position.
bitval2mask returns that. so we must check if the bit in the vector
equals the returned bitval.
Holger Hans Peter Freyther
Harald Welte
Sylvain Munaut