diff --git a/tools/adbs b/tools/adbs
index a9bc7c2..a8f06c0 100755
--- a/tools/adbs
+++ b/tools/adbs
@@ -15,206 +15,30 @@
 # limitations under the License.
 
 import os
+import os.path
 import re
 import string
 import sys
 
-###############################################################################
-# match "#00 pc 0003f52e  /system/lib/libdvm.so" for example
-###############################################################################
-trace_line = re.compile("(.*)(\#[0-9]+) {1,2}(..) ([0-9a-f]{8})  ([^\r\n \t]*)")
-
-# returns a list containing the function name and the file/lineno
-def CallAddr2Line(lib, addr):
-  global symbols_dir
-  global addr2line_cmd
-  global cppfilt_cmd
-
-  if lib != "":
-    cmd = addr2line_cmd + \
-        " -f -e " + symbols_dir + lib + " 0x" + addr
-    stream = os.popen(cmd)
-    lines = stream.readlines()
-    list = map(string.strip, lines)
-  else:
-    list = []
-  if list != []:
-    # Name like "move_forward_type<JavaVMOption>" causes troubles
-    mangled_name = re.sub('<', '\<', list[0]);
-    mangled_name = re.sub('>', '\>', mangled_name);
-    cmd = cppfilt_cmd + " " + mangled_name
-    stream = os.popen(cmd)
-    list[0] = stream.readline()
-    stream.close()
-    list = map(string.strip, list)
-  else:
-    list = [ "(unknown)", "(unknown)" ]
-  return list
-
-
-###############################################################################
-# similar to CallAddr2Line, but using objdump to find out the name of the
-# containing function of the specified address
-###############################################################################
-def CallObjdump(lib, addr):
-  global objdump_cmd
-  global symbols_dir
-
-  unknown = "(unknown)"
-  uname = os.uname()[0]
-  if uname == "Darwin":
-    proc = os.uname()[-1]
-    if proc == "i386":
-      uname = "darwin-x86"
-    else:
-      uname = "darwin-ppc"
-  elif uname == "Linux":
-    uname = "linux-x86"
-  if lib != "":
-    next_addr = string.atoi(addr, 16) + 1
-    cmd = objdump_cmd \
-        + " -C -d --start-address=0x" + addr + " --stop-address=" \
-        + str(next_addr) \
-        + " " + symbols_dir + lib
-    stream = os.popen(cmd)
-    lines = stream.readlines()
-    map(string.strip, lines)
-    stream.close()
-  else:
-    return unknown
-
-  # output looks like
-  #
-  # file format elf32-littlearm
-  #
-  # Disassembly of section .text:
-  #
-  # 0000833c <func+0x4>:
-  #        833c:       701a            strb    r2, [r3, #0]
-  #
-  # we want to extract the "func" part
-  num_lines = len(lines)
-  if num_lines < 2:
-    return unknown
-  func_name = lines[num_lines-2]
-  func_regexp = re.compile("(^.*\<)(.*)(\+.*\>:$)")
-  components = func_regexp.match(func_name)
-  if components is None:
-    return unknown
-  return components.group(2)
-
-###############################################################################
-# determine the symbols directory in the local build
-###############################################################################
-def FindSymbolsDir():
-  global symbols_dir
-
-  try:
-    path = os.environ['ANDROID_PRODUCT_OUT'] + "/symbols"
-  except:
-    cmd = "CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core " \
-      + "SRC_TARGET_DIR=build/target make -f build/core/config.mk " \
-      + "dumpvar-abs-TARGET_OUT_UNSTRIPPED"
-    stream = os.popen(cmd)
-    str = stream.read()
-    stream.close()
-    path = str.strip()
-
-  if (not os.path.exists(path)):
-    print path + " not found!"
-    sys.exit(1)
-
-  symbols_dir = path
-
-###############################################################################
-# determine the path of binutils
-###############################################################################
-def SetupToolsPath():
-  global addr2line_cmd
-  global objdump_cmd
-  global cppfilt_cmd
-  global symbols_dir
-
-  uname = os.uname()[0]
-  if uname == "Darwin":
-    uname = "darwin-x86"
-  elif uname == "Linux":
-    uname = "linux-x86"
-  gcc_version = os.environ["TARGET_GCC_VERSION"]
-  prefix = "./prebuilts/gcc/" + uname + "/arm/arm-linux-androideabi-" + \
-           gcc_version + "/bin/"
-  addr2line_cmd = prefix + "arm-linux-androideabi-addr2line"
-
-  if (not os.path.exists(addr2line_cmd)):
-    try:
-      prefix = os.environ['ANDROID_BUILD_TOP'] + "/prebuilts/gcc/" + \
-               uname + "/arm/arm-linux-androideabi-" + gcc_version + "/bin/"
-    except:
-      prefix = "";
-
-    addr2line_cmd = prefix + "arm-linux-androideabi-addr2line"
-    if (not os.path.exists(addr2line_cmd)):
-      print addr2line_cmd + " not found!"
-      sys.exit(1)
-
-  objdump_cmd = prefix + "arm-linux-androideabi-objdump"
-  cppfilt_cmd = prefix + "arm-linux-androideabi-c++filt"
-
-###############################################################################
-# look up the function and file/line number for a raw stack trace line
-# groups[0]: log tag
-# groups[1]: stack level
-# groups[2]: "pc"
-# groups[3]: code address
-# groups[4]: library name
-###############################################################################
-def SymbolTranslation(groups):
-  lib_name = groups[4]
-  code_addr = groups[3]
-  caller = CallObjdump(lib_name, code_addr)
-  func_line_pair = CallAddr2Line(lib_name, code_addr)
-
-  # If a callee is inlined to the caller, objdump will see the caller's
-  # address but addr2line will report the callee's address. So the printed
-  # format is desgined to be "caller<-callee  file:line"
-  if (func_line_pair[0] != caller):
-    print groups[0] + groups[1] + " " + caller + "<-" + \
-          '  '.join(func_line_pair[:]) + " "
-  else:
-    print groups[0] + groups[1] + " " + '  '.join(func_line_pair[:]) + " "
-
-###############################################################################
+sys.path.insert(0, os.path.dirname(__file__) + "/../../development/scripts")
+import stack_core
+import symbol
 
 if __name__ == '__main__':
   # pass the options to adb
   adb_cmd  = "adb " + ' '.join(sys.argv[1:])
 
-  # setup addr2line_cmd and objdump_cmd
-  SetupToolsPath()
-
-  # setup the symbols directory
-  FindSymbolsDir()
+  # create tracer for line parsing
+  tracer = stack_core.TraceConverter()
 
   # invoke the adb command and filter its output
   stream = os.popen(adb_cmd)
   while (True):
     line = stream.readline()
-
-    # EOF reached
     if (line == ''):
       break
-
-    # remove the trailing \n
-    line = line.strip()
-
-    # see if this is a stack trace line
-    match = trace_line.match(line)
-    if (match):
-      groups = match.groups()
-      # translate raw address into symbols
-      SymbolTranslation(groups)
-    else:
-      print line
+    if(tracer.ProcessLine(line) == False):
+      print(line.strip())
       sys.stdout.flush()
 
   # adb itself aborts