set disassembly-flavor intel

define hook-stop
x/li $eip
x/8wx $esp
end

set conditional breakpoint:

break dlopen if strcmp(file, "libc.so") == 0

set conditional logpoint:

break func_name
commands
  silent
  #p/x *($rdi+0x34)
  printf "msg: %d\n", *($rdi+0x34)
  cont
end