Hi, On 5/28/2015 2:24 AM, Waldemar Brodkorb wrote: > Hi, > Sheng Yong wrote, > >> Hi, >> >> I encountered a problem when I test thread local storage >> on my arm board (kernel 3.10.77 and uclibc 0.99.3.2). >> >> Please let me know if I am doing something wrong for >> debugging TLS. > > You mean 0.9.33.2? > Sure it has NPTL/TLS support, but it depends if it is > configured in or not. uClibc support linuxthreads, linuxthreads-new > and NPTL for ARM. So it depends how it got configured. Yes, I think configures about TLS are enabled. We try to use NPTL/TLS.
UCLIBC_HAS_THREADS_NATIVE=y UCLIBC_HAS_THREADS=y UCLIBC_HAS_TLS=y But I don't know if there is anything we missed? Thanks, Sheng > >> on my x86 host machine: >> root@kernel-host:~> cat tls.c >> __thread int i =5; >> >> int >> main (int argc, char **argv) >> { >> return 0; >> } >> >> root@kernel-host:~> arm-linux-uclibceabi-gcc -o tls tls.c -g -lpthread >> >> on my arm board: >> -bash-4.2# gdb ./tls >> GNU gdb (GDB) 7.6 >> Copyright (C) 2013 Free Software Foundation, Inc. >> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> >> This is free software: you are free to change and redistribute it. >> There is NO WARRANTY, to the extent permitted by law. Type "show copying" >> and "show warranty" for details. >> This GDB was configured as "arm-euler-linux-uclibceabi". >> For bug reporting instructions, please see: >> <http://www.gnu.org/software/gdb/bugs/>... >> Reading symbols from /tmp/zz/tls...done. >> (gdb) b main >> Breakpoint 1 at 0x8518: file tls.c, line 6. >> (gdb) r >> Starting program: /tmp/zz/tls >> [Thread debugging using libthread_db enabled] >> Using host libthread_db library "/lib/libthread_db.so.1". >> >> Breakpoint 1, main (argc=1, argv=0xbefffd84) at tls.c:6 >> 6 tls.c: No such file or directory. >> (gdb) whatis i >> type = int >> (gdb) p i >> Cannot find thread-local storage for Thread 0xb6ffb000 (LWP 538), executable >> file /tmp/zz/tls: >> *capability not available* >> (gdb) > > Strange error. > > best regards > Waldemar > > . > _______________________________________________ uClibc mailing list uClibc@uclibc.org http://lists.busybox.net/mailman/listinfo/uclibc