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This is an example of accessing a file name and line number based on a code address in an object file. A build will take a little fiddling with the simple Makefile. See the comments in the Makefile.
I hope to get in touch with the original author (github name Crablicious) by email, but have been unable to make contact so far (as of 11 December 2021).
The master branch requires latest libdwarf, which is currently libdwarf-0.3.1.
Branch v20210528 requires libdwarf-20210528, the final pre-semantic-versioning libdwarf, a version in many Linux distributions.
The batch no-batch options have very different code paths.
The program has the same name as the GNU binutils-gdb addr2line, but neither the options nor the source code have any similarity whatever to the GNU addr2line.
addr2line [ -h] [-a] [-e <objectpath>] [-b] [-n] [address] ...
where
-a --addresses Turns on printing of address before
the source line text
-e --exe <path> The the path to the object file to read.
Path defaults to "a.out"
-b --force-batch The CU address ranges will be looked
up once at the start and the generated table used.
-n --force-no-batch The addresses are looked up
independently for each address present.
In certain cases the no-batch will be overridden
and batching used.
-h --help Prints a help message and stops.
if no addresses present the program reads STDIN, expecting
a list of addresses there.
Here is an example:
q3 619: ./addr2line -a -e addr2line 0x2470 0x33b0
0x0000000000002470
/home/davea/dwarf/libdwarf-addr2line/addr2line.c:479
0x00000000000033b0
/home/davea/dwarf/libdwarf-addr2line/addr2line.c:40
echo 0x2470 >junk
./addr2line -a -e addr2line <junk
0x0000000000002470
/home/davea/dwarf/libdwarf-addr2line/addr2line.c:479
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