Hello greyes, ramunas,
You can use this list as a rough guide. For the most part, the common signals are similar. However, there are differences and let's not go there for now. That said, you should find the answer for most of the codes you see.
https://code.woboq.org/gcc/include/bits/waitstatus.h.html
https://people.cs.pitt.edu/~alanjawi/cs449/code/shell/UnixSignals.htm
[link]http://tldp.org/LDP/abs/html/exitcodes.html[/link]
If you are okay reading code, the first link will tell you how the signal and exit status are roughly used. The second link is the Unix signal sent to the daemons. The third link is the exit codes.
If an 8 bit status is sent, 0xAA, it can be treated as a Unix signal. E.g.
127: 2010-12-04 05:04:04 the killed daemon is /bin/snmpd: status=0x6
This means a SIGABRT was sent.
144: 2011-03-11 22:54:52 the killed daemon is /bin/hasync: status=0xfThis means a SIGTERM was sent.
If a 16 bit status is sent, 0xBBBB, it can be treated as an Exit signal. In your example, 0x100 equals Exit(1). The implementation for the different exit values are custom and unfortunately I cant tell you what they all do specifically.
HoMing