diff --git a/trunk/gdb/srs.py b/trunk/gdb/srs.py
deleted file mode 100644
index 038012f05..000000000
--- a/trunk/gdb/srs.py
+++ /dev/null
@@ -1,70 +0,0 @@
-import gdb, traceback;
-
-'''
-Usage:
-    nn_coroutines
-    nn_coroutines 1000
-'''
-class NnCouroutines(gdb.Command):
-    def __init__(self):
-        super(NnCouroutines, self).__init__('nn_coroutines', gdb.COMMAND_DATA)
-
-    # https://sourceware.org/gdb/current/onlinedocs/gdb/Python-API.html#Python-API
-    def invoke(self, arg, from_tty):
-        nn_interval=1000
-        nn_coroutines = 1
-        # Parse args.
-        args = arg.split(' ')
-        if args[0] != '':
-            nn_interval = int(args[0])
-        try:
-            pnext = prev = pthis = gdb.parse_and_eval('&_st_this_thread->tlink').__str__()
-            print('interval: %s, first: %s, args(%s): %s'%(nn_interval, pthis, len(args), args))
-            while True:
-                v = gdb.parse_and_eval('((_st_clist_t*)%s)->next'%pnext)
-                prev = pnext = str(v.__str__()).split(' ')[0]
-                if pnext == pthis:
-                    break
-                nn_coroutines += 1
-                if (nn_coroutines%nn_interval) == 0:
-                    print('next is %s, total %s'%(pnext, nn_coroutines))
-        except:
-            print('Error: prev=%s, this=%s, next=%s, v=%s'%(prev, pthis, pnext, v))
-            traceback.print_exc()
-        # Result.
-        print('total coroutines: %s'%(nn_coroutines))
-
-NnCouroutines()
-
-'''
-Usage:
-    show_coroutines
-'''
-class ShowCouroutines(gdb.Command):
-    def __init__(self):
-        super(ShowCouroutines, self).__init__('show_coroutines', gdb.COMMAND_DATA)
-
-    # https://sourceware.org/gdb/current/onlinedocs/gdb/Python-API.html#Python-API
-    def invoke(self, arg, from_tty):
-        offset = gdb.parse_and_eval('(int)(&(((_st_thread_t*)(0))->tlink))').__str__()
-        _st_this_thread = gdb.parse_and_eval('_st_this_thread').__str__()
-        pnext = prev = pthis = gdb.parse_and_eval('&_st_this_thread->tlink').__str__()
-        this_thread2 = gdb.parse_and_eval('(_st_thread_t*)(%s - %s)'%(pthis, offset)).__str__()
-        #print('offset=%s, _st_this_thread=%s, pthis-offset=%s'%(offset, _st_this_thread, this_thread2))
-        try:
-            while True:
-                trd = gdb.parse_and_eval('(_st_thread_t*)(%s - %s)'%(pnext, offset)).__str__()
-                jmpbuf = gdb.parse_and_eval('((_st_thread_t*)%s)->context.__jmpbuf'%(trd)).__str__().split(', ')
-                rbp, rsp, crip = int(jmpbuf[1]), int(jmpbuf[6]), None
-                if rbp > 0 and rsp > 0:
-                    crip = gdb.execute('x/2xa %s'%(rbp), to_string=True).split('\t')[2].strip()
-                    print('thread: %s, caller: %s'%(trd, crip))
-                v = gdb.parse_and_eval('((_st_clist_t*)%s)->next'%pnext)
-                prev = pnext = str(v.__str__()).split(' ')[0]
-                if pnext == pthis:
-                    break
-        except:
-            print('Error: prev=%s, this=%s, next=%s'%(prev, pthis, pnext))
-            traceback.print_exc()
-
-ShowCouroutines()