Debugging shared libraries with gdbserver
I am using gdbserver on target and CodeSourcery IDE. My hardware is a gumstix with a omap3530.
I can step through code in my main application but if I attempt to step into a function in a shared library I get memory address and a debugger terminates.
This is my library that is compiled and copied to the /lib folder on the target system.(it does have debug symbols) I have attempted to use the .gbdinit file to set solib-absolute-prefix /lib
Here are the warnings from the gdb trace:
903,056 13-gdb-set sysroot-on-target /lib
903,065 13^done
903,065 (gdb)
903,065 14-target-select remote 192.168.1.101:2345
903,114 =thread-group-started,id="i1",pid="42000"
903,114 =thread-created,id="1",group-id="i1"
903,115 15-list-thread-groups --available
903,120 16-list-thread-groups
903,128 &"warning: Unable to find dynamic linker breakpoint function.\nGDB will be unable to debug shared library initializers\nand track explicitly loaded dynamic code."
903,128 &"\n"
Which leads to
903,395 &"Error while mapping shared library sections:\n"
903,397 &"/lib/libCoreLib.so: Invalid argument.\n"
903,399 =library-loaded,id="/lib/libCoreLib.so",target-name="/lib/libCoreLib.so",hostname="/lib/libCoreLib.so",low-address="0x0",high-address="0x0",symbols-loaded="0",thread-group="i1"
Answer
You can debug with the library installed on your host, provided the debugging machine is also the development machine. In that case, you use set sysroot instead of set sysroot-on-target. For example :
set sysroot /home/username/.../rootfs/
where /home/username/.../rootfs/ contains a copy of your target filesystem
I think you should also specify / instead of /lib