diff --git a/.gitignore b/.gitignore
index 4a709a7..a3bfdd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,16 @@
 .tarball-version
 .version
 
+#gnu autotest
+tests/package.m4
+tests/atconfig
+tests/atlocal
+tests/osmo-test
+tests/package.m4
+tests/testsuite
+tests/testsuite.dir/
+tests/testsuite.log
+
 tests/sms/sms_test
 tests/timer/timer_test
 tests/msgfile/msgfile_test
diff --git a/configure.ac b/configure.ac
index 7d8e6dd..dc43509 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,6 +3,7 @@
 	[openbsc-devel@lists.openbsc.org])
 
 AM_INIT_AUTOMAKE([dist-bzip2])
+AC_CONFIG_TESTDIR(tests)
 
 dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
@@ -138,6 +139,10 @@
 	AC_DEFINE([PANIC_INFLOOP],[1],[Use infinite loop on panic rather than fprintf/abort])
 fi
 
+
+AC_CONFIG_FILES(tests/osmo-test, chmod +x tests/osmo-test)
+dnl AC_CONFIG_FILES(tests/atlocal)
+
 AC_OUTPUT(
 	libosmocore.pc
 	libosmocodec.pc
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6c3cb33..aed0f13 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -3,4 +3,44 @@
 if ENABLE_MSGFILE
 SUBDIRS += msgfile
 endif
+
+
+# The `:;' works around a Bash 3.2 bug when the output is not writeable.
+$(srcdir)/package.m4: $(top_srcdir)/configure.ac
+	:;{ \
+               echo '# Signature of the current package.' && \
+               echo 'm4_define([AT_PACKAGE_NAME],' && \
+               echo '  [$(PACKAGE_NAME)])' && \
+               echo 'm4_define([AT_PACKAGE_TARNAME],' && \
+               echo '  [$(PACKAGE_TARNAME)])' && \
+               echo 'm4_define([AT_PACKAGE_VERSION],' && \
+               echo '  [$(PACKAGE_VERSION)])' && \
+               echo 'm4_define([AT_PACKAGE_STRING],' && \
+               echo '  [$(PACKAGE_STRING)])' && \
+               echo 'm4_define([AT_PACKAGE_BUGREPORT],' && \
+               echo '  [$(PACKAGE_BUGREPORT)])'; \
+               echo 'm4_define([AT_PACKAGE_URL],' && \
+               echo '  [$(PACKAGE_URL)])'; \
+             } >'$(srcdir)/package.m4'
+     
+EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) missing
+TESTSUITE = $(srcdir)/testsuite
+     
+check-local: atconfig $(TESTSUITE)
+	$(SHELL) '$(TESTSUITE)' $(TESTSUITEFLAGS)
+     
+installcheck-local: atconfig $(TESTSUITE)
+	$(SHELL) '$(TESTSUITE)' AUTOTEST_PATH='$(bindir)' \
+		$(TESTSUITEFLAGS)
+     
+clean-local:
+	test ! -f '$(TESTSUITE)' || \
+		$(SHELL) '$(TESTSUITE)' --clean
+     
+AUTOM4TE = $(SHELL) $(srcdir)/missing --run autom4te
+AUTOTEST = $(AUTOM4TE) --language=autotest
+$(TESTSUITE): $(srcdir)/testsuite.at $(srcdir)/package.m4
+	$(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
+	mv $@.tmp $@
+
 endif
diff --git a/tests/bits/bitrev_test.ok b/tests/bits/bitrev_test.ok
new file mode 100644
index 0000000..47f402f
--- /dev/null
+++ b/tests/bits/bitrev_test.ok
@@ -0,0 +1,24 @@
+INORDER:  01 02 04 08 10 20 40 80 
+REVERSED: 80 40 20 10 08 04 02 01 
+
+INORDER:  02 04 08 10 20 40 80 
+REVERSED: 40 20 10 08 04 02 01 
+
+INORDER:  04 08 10 20 40 80 
+REVERSED: 20 10 08 04 02 01 
+
+INORDER:  08 10 20 40 80 
+REVERSED: 10 08 04 02 01 
+
+INORDER:  10 20 40 80 
+REVERSED: 08 04 02 01 
+
+INORDER:  20 40 80 
+REVERSED: 04 02 01 
+
+INORDER:  40 80 
+REVERSED: 02 01 
+
+INORDER:  80 
+REVERSED: 01 
+
diff --git a/tests/missing b/tests/missing
new file mode 100755
index 0000000..28055d2
--- /dev/null
+++ b/tests/missing
@@ -0,0 +1,376 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009 Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+run=:
+sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
+sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+  configure_ac=configure.ac
+else
+  configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case $1 in
+--run)
+  # Try to run requested program, and just exit if it succeeds.
+  run=
+  shift
+  "$@" && exit 0
+  # Exit code 63 means version mismatch.  This often happens
+  # when the user try to use an ancient version of a tool on
+  # a file that requires a minimum version.  In this case we
+  # we should proceed has if the program had been absent, or
+  # if --run hadn't been passed.
+  if test $? = 63; then
+    run=:
+    msg="probably too old"
+  fi
+  ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+  --run           try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  autom4te     touch the output file, or create a stub one
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  help2man     touch the output file
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  tar          try tar, gnutar, gtar, then tar without non-portable flags
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# normalize program name to check for.
+program=`echo "$1" | sed '
+  s/^gnu-//; t
+  s/^gnu//; t
+  s/^g//; t'`
+
+# Now exit if we have it, but it failed.  Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program).  This is about non-GNU programs, so use $1 not
+# $program.
+case $1 in
+  lex*|yacc*)
+    # Not GNU programs, they don't have --version.
+    ;;
+
+  tar*)
+    if test -n "$run"; then
+       echo 1>&2 "ERROR: \`tar' requires --run"
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       exit 1
+    fi
+    ;;
+
+  *)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       # Could not run --version or --help.  This is probably someone
+       # running `$TOOL --version' or `$TOOL --help' to check whether
+       # $TOOL exists and not knowing $TOOL uses missing.
+       exit 1
+    fi
+    ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case $program in
+  aclocal*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`${configure_ac}'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+    test -z "$files" && files="config.h"
+    touch_files=
+    for f in $files; do
+      case $f in
+      *:*) touch_files="$touch_files "`echo "$f" |
+				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+      *) touch_files="$touch_files $f.in";;
+      esac
+    done
+    touch $touch_files
+    ;;
+
+  automake*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print |
+	   sed 's/\.am$/.in/' |
+	   while read f; do touch "$f"; done
+    ;;
+
+  autom4te*)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.
+         You can get \`$1' as part of \`Autoconf' from any GNU
+         archive site."
+
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo "#! /bin/sh"
+	echo "# Created by GNU Automake missing as a replacement of"
+	echo "#  $ $@"
+	echo "exit 0"
+	chmod +x $file
+	exit 1
+    fi
+    ;;
+
+  bison*|yacc*)
+    echo 1>&2 "\
+WARNING: \`$1' $msg.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if test $# -ne 1; then
+        eval LASTARG="\${$#}"
+	case $LASTARG in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if test ! -f y.tab.h; then
+	echo >y.tab.h
+    fi
+    if test ! -f y.tab.c; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex*|flex*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if test $# -ne 1; then
+        eval LASTARG="\${$#}"
+	case $LASTARG in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if test ! -f lex.yy.c; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  help2man*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+	 you modified a dependency of a manual page.  You may need the
+	 \`Help2man' package in order for those modifications to take
+	 effect.  You can get \`Help2man' from any GNU archive site."
+
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo ".ab help2man is required to generate this page"
+	exit $?
+    fi
+    ;;
+
+  makeinfo*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    # The file to touch is that specified with -o ...
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -z "$file"; then
+      # ... or it is the one specified with @setfilename ...
+      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '
+	/^@setfilename/{
+	  s/.* \([^ ]*\) *$/\1/
+	  p
+	  q
+	}' $infile`
+      # ... or it is derived from the source name (dir/f.texi becomes f.info)
+      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
+    fi
+    # If the file does not exist, the user really needs makeinfo;
+    # let's fail without touching anything.
+    test -f $file || exit 1
+    touch $file
+    ;;
+
+  tar*)
+    shift
+
+    # We have already tried tar in the generic part.
+    # Look for gnutar/gtar before invocation to avoid ugly error
+    # messages.
+    if (gnutar --version > /dev/null 2>&1); then
+       gnutar "$@" && exit 0
+    fi
+    if (gtar --version > /dev/null 2>&1); then
+       gtar "$@" && exit 0
+    fi
+    firstarg="$1"
+    if shift; then
+	case $firstarg in
+	*o*)
+	    firstarg=`echo "$firstarg" | sed s/o//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+	case $firstarg in
+	*h*)
+	    firstarg=`echo "$firstarg" | sed s/h//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+    fi
+
+    echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+         You may want to install GNU tar or Free paxutils, or check the
+         command line arguments."
+    exit 1
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequisites for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/tests/msgfile/msgfile_test.ok b/tests/msgfile/msgfile_test.ok
new file mode 100644
index 0000000..c47cd74
--- /dev/null
+++ b/tests/msgfile/msgfile_test.ok
@@ -0,0 +1 @@
+Entry '*:*::Hello Welt'
diff --git a/tests/osmo-test.in b/tests/osmo-test.in
new file mode 100644
index 0000000..c2dc912
--- /dev/null
+++ b/tests/osmo-test.in
@@ -0,0 +1,2 @@
+abs_top_builddir=@abs_top_builddir@
+: ${LIBTOOL=$abs_top_builddir/libtool
diff --git a/tests/sms/sms_test.ok b/tests/sms/sms_test.ok
new file mode 100644
index 0000000..d0e0983
--- /dev/null
+++ b/tests/sms/sms_test.ok
@@ -0,0 +1,2 @@
+SMS testing
+OK
diff --git a/tests/smscb/smscb_test.ok b/tests/smscb/smscb_test.ok
new file mode 100644
index 0000000..347037f
--- /dev/null
+++ b/tests/smscb/smscb_test.ok
@@ -0,0 +1,4 @@
+(srl) GS: 1 MSG_CODE: 1 UPDATE: 0
+(msg) msg_id: 1293
+(dcs) group: 1 language: 0
+(pge) page total: 1 current: 1
diff --git a/tests/testsuite.at b/tests/testsuite.at
new file mode 100644
index 0000000..df5a5e8
--- /dev/null
+++ b/tests/testsuite.at
@@ -0,0 +1,45 @@
+AT_INIT
+AT_TESTED(osmo-test)
+
+AT_BANNER([Regression tests.])
+
+
+# todo.. create one macro for it
+AT_SETUP([bits])
+AT_KEYWORDS([bits])
+cat $abs_srcdir/bits/bitrev_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/bits/bitrev_test], [], [expout])
+AT_CLEANUP
+
+if ENABLE_MSGFILE
+AT_SETUP([msgfile])
+AT_KEYWORDS([msgfile])
+cp $abs_srcdir/msgfile/msgconfig.cfg .
+cat $abs_srcdir/msgfile/msgfile_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/msgfile/msgfile_test], [], [expout])
+AT_CLEANUP
+endif
+
+AT_SETUP([sms])
+AT_KEYWORDS([sms])
+cat $abs_srcdir/sms/sms_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/sms/sms_test], [], [expout])
+AT_CLEANUP
+
+AT_SETUP([smscb])
+AT_KEYWORDS([smscb])
+cat $abs_srcdir/smscb/smscb_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/smscb/smscb_test], [], [expout])
+AT_CLEANUP
+
+AT_SETUP([timer])
+AT_KEYWORDS([timer])
+cat $abs_srcdir/timer/timer_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/timer/timer_test], [], [expout])
+AT_CLEANUP
+
+AT_SETUP([ussd])
+AT_KEYWORDS([ussd])
+cat $abs_srcdir/ussd/ussd_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/ussd/ussd_test], [], [expout])
+AT_CLEANUP
diff --git a/tests/timer/timer_test.ok b/tests/timer/timer_test.ok
new file mode 100644
index 0000000..b1792f1
--- /dev/null
+++ b/tests/timer/timer_test.ok
@@ -0,0 +1,19 @@
+Running timer test for 16 steps, accepting imprecision of 0.010000 seconds
+added 1 timers in step 0 (expired=0)
+added 2 timers in step 1 (expired=0)
+added 4 timers in step 2 (expired=0)
+added 8 timers in step 3 (expired=0)
+added 16 timers in step 4 (expired=1)
+added 32 timers in step 5 (expired=4)
+added 64 timers in step 6 (expired=33)
+added 128 timers in step 7 (expired=87)
+added 256 timers in step 8 (expired=183)
+added 512 timers in step 9 (expired=466)
+added 1024 timers in step 10 (expired=970)
+added 2048 timers in step 11 (expired=1968)
+added 4096 timers in step 12 (expired=3994)
+added 8192 timers in step 13 (expired=8035)
+added 16384 timers in step 14 (expired=16324)
+added 32768 timers in step 15 (expired=32641)
+Main timer has finished, please, wait a bit for the final report.
+test over: added=65535 expired=65535 too_late=0 
diff --git a/tests/ussd/ussd_test.ok b/tests/ussd/ussd_test.ok
new file mode 100644
index 0000000..e4bfabc
--- /dev/null
+++ b/tests/ussd/ussd_test.ok
@@ -0,0 +1 @@
+TODO: test is crashing inside the log handling