Il giorno 14/mag/2013 20:08, "ANDY KENNEDY" <andy.kenn...@adtran.com> ha scritto: > > > > two applications listed a backtrace. Only one line is printed with an > > > address (presumably of the backtrace function call). > > Yes, it is the calling function address. > > You can use addr2line command to convert the address in line number. > > Before you have to compile the application with debug information (add > > -g compiler flag), > > then use: > > addr2line -e <exec_name> <address> > > Let's say I do that. I don't think that resolves the issue of it not > doing a backtrace, will it? > > > > > > > It appears that, since the reference to dlopen was removed from > > > libubacktrace/backtrace.c, that the libgcc_s.so.1 is removed from the > > > equation entirely. Believing this, I'm attempting to revert the > > > changes made to that file so that we still attempt to dlopen the > > > libgcc_s.so.1 library prior to performing the backtrace. > > > > > > I'll let the list know whether this works. > > > > > As I reported this seg faults. > > This is a FULL description of what I did: > > # Extract the code from `man 3 backtrace` in to hello_world.c > /opt/toolchains/powerpc-unknown-linux-uclibcgnuspe/bin/powerpc-linux-gcc \ > -static -rdynamic -o hello_world hello_world.c -lubacktrace -ldl
You are bot passing the unwind table flag -fasynchronous-unwind-tables > # Next, I copy over to my target (essentially this is a P1010RDB): > SYSROOT=$(/opt/toolchains/powerpc-unknown-linux-uclibcgnuspe/bin/powerpc-linux-gcc -print-sysroot) > LIBDIR=$SYSROOT/lib > for i in ld-uClibc.so.0 libc.so.0 libgcc_s.so.1 ; do \ > cp $LIBDIR/$i /tftpboot ; \ > done > cp hello_world /tftpboot > ssh <mytarget> > tftp <all those files> > LD_LIBRARY_PATH=./ hello_world 5 > > > That should produce five function calls and a backtrace through each > (as it does on my x86_64 host). I only get the backtrace function > in the list. > > What did I do wrong? > > Thanks, > Andy _______________________________________________ uClibc mailing list uClibc@uclibc.org http://lists.busybox.net/mailman/listinfo/uclibc