Remote protocol problems after 2009 Oct 20
Michael Snyder
msnyder@vmware.com
Tue Nov 24 21:34:00 GMT 2009
Julian Smith wrote:
> Hello
>
> I'm working on UndoDB's support for running as a remote target,
> controlled by gdb-7's remote protocol commands, including the new
> reverse commands bc and bs.
>
> Things were working fine, but a rather large commit to gdb on 2009 Oct
> 19 (the diff is 10,000 lines long) seems to have changed something and
> UndoDB no longer works, even for simple running forwards.
Bummer!
> The symptom is that gdb doesn't step off of an internal (i.e. not set
> by the user) breakpoint in _dl_debug_state after starting the inferior
> but instead returns to the user. Here's the output (for gdb built from
> source dated 2009 oct 20, but the same thing happens with a gdb from a
> few days ago):
>
> GNU gdb (GDB) 7.0.50.20091019-cvs
> Copyright (C) 2009 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 "i686-pc-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe...done.
> 0xb7fc3850 in ?? () from /lib/ld-linux.so.2
> (gdb) break main
> Breakpoint 1 at 0x8048465: file test16.c, line 13.
> (gdb) run
OK first question -- is there any compelling reason why you
are using "run" here? With the remote target, once you are
connected, you usually want to use only "continue", not "run".
Not saying that's the problem, but it would be nice to
take it out of the picture.
Oh, I see from further down that you are using target
"extended-remote". Fine, that does support the "run"
command. Still, I would be interested in finding out what
happens if you used plain "target remote" and no "run".
> The program being debugged has been started already.
> Start it from the beginning? (y or n) y
> Starting program: test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe
> 0xb7fa7b51 in _dl_debug_state () from /lib/ld-linux.so.2
> (gdb)
>
> With earlier builds of gdb, gdb steps off the breakpoint at
> _dl_debug_state and continues the inferior until it hits the breakpoint
> at main().
If you continue again from here, what happens?
Hitting this breakpoint repeatedly is expected -- and is
not necessarily an indication that you are not making progress.
Have you tried something like "continue 100"?
Also if you "set verbose on", you should get a shared library
message every time this breakpoint is hit. That could also give
you an indication as to whether the program is making progress.
> I'm running gdb with the following startup script:
>
> set remote hardware-breakpoint-limit -1
> set remote hardware-breakpoint-packet off
> set remote software-breakpoint-packet on
> target extended-remote localhost:3000
>
> If anyone has any ideas what might be wrong, or where to look for more
> information, i'd be very grateful.
>
> Here's the protocol log, with a few diagnostics from the UndoDB remote
> server:
These logs are helpful, but also a little confusing due to linux
auto-randomization: the program is loading at a different base address
each time you run it. Thus the PC looks different each time even though
it is probably the same. Could you re-run the experiment with auto
randomization turned off?
What I can tell so far is that the sequence of events up until
the "run" seems the same, and that the next thing that happens
is a stop at what is *probably* _dl_debug_state. After that
they diverge, and it would be easier to compare if we could
take the address randomization out of the picture.
> GNU gdb (GDB) 7.0.50.20091019-cvs
> Copyright (C) 2009 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 "i686-pc-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe...done.
> Sending packet: $qSupported:multiprocess+#c6...Ack
> Packet received: ReverseContinue+;ReverseStep+;multiprocess-
> Packet qSupported (supported-packets) is supported
> Sending packet: $!#21...Ack
> Packet received: OK
> Sending packet: $Hg0#df...Ack
> Packet received: E10
> Sending packet: $?#3f... 253486 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [10807:10807]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $Hc-1#09...Ack
> Packet received: E05
> Sending packet: $qC#b4...Ack
> Packet received:
> Sending packet: $qAttached#8f...Ack
> Packet received: 0
> Packet qAttached (query-attached) is supported
> Sending packet: $qOffsets#4b...Ack
> Packet received:
> Sending packet: $g#67...Ack
> Packet received: 00000000000000000000000000000000e0719fbf0000000000000000000000005038f1b792020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $qSymbol::#5b...Ack
> Packet received:
> Packet qSymbol (symbol-lookup) is NOT supported
> Sending packet: $mb7f13850,1#ca...Ack
> Packet received: 89
> Sending packet: $mb7f13850,8#d1...Ack
> Packet received: 89e0e82902000089
> Sending packet: $mb7f13850,7#d0...Ack
> Packet received: 89e0e829020000
> 0xb7f13850 in ?? () from /lib/ld-linux.so.2
> (gdb) break main
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048465,1#3d...Ack
> Packet received: c7
> Breakpoint 1 at 0x8048465: file test/test16.c, line 13.
> (gdb) run
> The program being debugged has been started already.
> Start it from the beginning? (y or n) y
> Sending packet: $vKill;a410#33... 255797 undodb.c:3809:undodb_swaitpid [10807:10807]: unexpected waitpid status from rchild on startup: pid=10811, WIFSIGNALED, sig= 9 (SIGKILL)
> Ack
> Packet received: OK
> Packet vKill (kill) is supported
> Sending packet: $?#3f... 255865 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [10807:10807]: sending: X09
> Ack
> Packet received: X09
> Starting program: test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe
> Sending packet: $vRun;#e6...Ack
> 255951 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [10807:10807]: sending: S05
> Packet received: S05
> Packet vRun (run) is supported
> Sending packet: $qC#b4...Ack
> Packet received:
> Sending packet: $qOffsets#4b...Ack
> Packet received:
> Sending packet: $Hg0#df...Ack
> Packet received: E10
> Sending packet: $g#67...Ack
> Packet received: 00000000000000000000000000000000e085bebf0000000000000000000000005038f6b792020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $mb7f63850,1#cf...Ack
> Packet received: 89
> Sending packet: $mb7f63850,8#d6...Ack
> Packet received: 89e0e82902000089
> Sending packet: $mb7f63850,7#d5...Ack
> Packet received: 89e0e829020000
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $mb7f63850,1#cf...Ack
> Packet received: 89
> Sending packet: $mb7f63850,8#d6...Ack
> Packet received: 89e0e82902000089
> Sending packet: $mb7f63850,7#d5...Ack
> Packet received: 89e0e829020000
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $Z0,8048465,1#86... 259097 gdb7/js_undodb_server.c:817:command_loop [10807:10807]: command=Z
> 259097 gdb7/js_undodb_server.c:832:command_loop [10807:10807]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7f71b50,1#41... 259165 gdb7/js_undodb_server.c:817:command_loop [10807:10807]: command=Z
> 259166 gdb7/js_undodb_server.c:832:command_loop [10807:10807]: Z0: set software breakpoint address=0xb7f71b50 length=1
> Ack
> Packet received: OK
> Sending packet: $vCont?#49...Ack
> Packet received:
> Packet vCont (verbose-resume) is NOT supported
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $c#63... 259372 gdb7/js_undodb_server.c:441:command_loop [10807:10807]: doing PTRACE_CONT
> 259373 gdb7/js_undodb_server.c:450:command_loop [10807:10807]: undodb_waitpid() returned: pid=10812, WIFSTOPPED, sig= 5 (SIGTRAP)
> 259373 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [10807:10807]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 000000005806f8b7d430f6b7f4fff7b7b483bebf7085bebf7006f8b75806f8b7511bf7b746020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $z0,8048465,1#a6... 259509 gdb7/js_undodb_server.c:817:command_loop [10807:10807]: command=z
> 259510 gdb7/js_undodb_server.c:832:command_loop [10807:10807]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7f71b50,1#61... 259578 gdb7/js_undodb_server.c:817:command_loop [10807:10807]: command=z
> 259578 gdb7/js_undodb_server.c:832:command_loop [10807:10807]: z0: clear software breakpoint address=0xb7f71b50 length=1
> Ack
> Packet received: OK
> Sending packet: $mb7f71b51,1#f9...Ack
> Packet received: 89
> 0xb7f71b51 in _dl_debug_state () from /lib/ld-linux.so.2
> (gdb) make.py:1449:commands2: e= <type 'exceptions.AssertionError'>
> Traceback (most recent call last):
> File "./make.py", line 1440, in commands2
> ret = commands( context)
> File "./make.py", line 2343, in commands
> assert ur.hit_breakpoint
> AssertionError
> frontend_gdbmacro.py:1534:terminate: killing unterminated frontend.
> Quit
> (gdb) q
> A debugging session is active.
>
> Inferior 1 [Remote target] will be killed.
>
> Quit anyway? (y or n) y
> Sending packet: $vKill;a410#33...Quitting: Remote connection closed
> yabs 0: *** target failed: ./test41,remote=1,gdb=/home/jules/gdb_cvs,,20-oct-2009
> yabs 0: *** error was:
> yabs 0: ../../home/jules/yabs/yabs.py:1712:_command_gettext(): command2 = command( context)
> yabs 0: ./make.py:1440:commands2(): ret = commands( context)
> yabs 0: ./make.py:2343:commands(): assert ur.hit_breakpoint
> yabs 0: AssertionError
> yabs 0: *** target failed: ./tests_nr41,remote=1,gdb=/home/jules/gdb_cvs,,20-oct-2009
> yabs summary: yabs 0: *** target failed: ./tests_nr41,remote=1,gdb=/home/jules/gdb_cvs,,20-oct-2009
> yabs summary: yabs 1: *** target failed: ./test41,remote=1,gdb=/home/jules/gdb_cvs,,20-oct-2009
>
>
> And here's the log with a slightly older build of gdb:
>
> GNU gdb (GDB) 7.0.50.20091018-cvs
> Copyright (C) 2009 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 "i686-pc-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe...done.
> Sending packet: $qSupported:multiprocess+#c6...Ack
> Packet received: ReverseContinue+;ReverseStep+;multiprocess-
> Packet qSupported (supported-packets) is supported
> Sending packet: $!#21...Ack
> Packet received: OK
> Sending packet: $Hg0#df...Ack
> Packet received: E10
> Sending packet: $?#3f... 1021056 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $Hc-1#09...Ack
> Packet received: E05
> Sending packet: $qC#b4...Ack
> Packet received:
> Sending packet: $qAttached#8f...Ack
> Packet received: 0
> Packet qAttached (query-attached) is supported
> Sending packet: $qOffsets#4b...Ack
> Packet received:
> Sending packet: $g#67...Ack
> Packet received: 00000000000000000000000000000000c092a3bf00000000000000000000000050d808b892020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $qSymbol::#5b...Ack
> Packet received:
> Packet qSymbol (symbol-lookup) is NOT supported
> Sending packet: $mb808d850,1#cd...Ack
> Packet received: 89
> Sending packet: $mb808d850,8#d4...Ack
> Packet received: 89e0e82902000089
> Sending packet: $mb808d850,7#d3...Ack
> Packet received: 89e0e829020000
> 0xb808d850 in ?? () from /lib/ld-linux.so.2
> (gdb) break main
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048465,1#3d...Ack
> Packet received: c7
> Breakpoint 1 at 0x8048465: file test/test16.c, line 13.
> (gdb) run
> The program being debugged has been started already.
> Start it from the beginning? (y or n) y
> Sending packet: $vKill;a410#33... 1023360 undodb.c:3809:undodb_swaitpid [17884:17884]: unexpected waitpid status from rchild on startup: pid=17889, WIFSIGNALED, sig= 9 (SIGKILL)
> Ack
> Packet received: OK
> Packet vKill (kill) is supported
> Sending packet: $?#3f... 1023426 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: X09
> Ack
> Packet received: X09
> Starting program: test/_yabs/test16,cpu=i686,debug,gcc=4.3.4,os=Linux,osv=2.6.30-1-686.exe
> Sending packet: $vRun;#e6...Ack
> 1023536 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Packet vRun (run) is supported
> Sending packet: $qC#b4...Ack
> Packet received:
> Sending packet: $qOffsets#4b...Ack
> Packet received:
> Sending packet: $Hg0#df...Ack
> Packet received: E10
> Sending packet: $g#67...Ack
> Packet received: 00000000000000000000000000000000d0d2b5bf00000000000000000000000050e8eeb792020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8049658,4#45...Ack
> Packet received: 00000000
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $Z0,8048465,1#86... 1026259 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1026259 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 1026328 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1026328 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $vCont?#49...Ack
> Packet received:
> Packet vCont (verbose-resume) is NOT supported
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $c#63... 1026534 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> 1026534 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 1026534 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 0000000058b6f0b7d4e0eeb7f4aff0b7a4d0b5bf60d2b5bf70b6f0b758b6f0b751cbefb746020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $P8=50cbefb7#53... 1026672 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xb7efcb50
> Ack
> Packet received: OK
> Packet P (set-register) is supported
> Sending packet: $P29=ffffffff#28... 1026740 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xffffffff
> Ack
> Packet received: OK
> Sending packet: $m8049658,4#45...Ack
> Packet received: 58b6f0b7
> Sending packet: $mb7f0b65c,4#2c...Ack
> Packet received: 70b6f0b7
> Sending packet: $mb7f0b670,14#2c...Ack
> Packet received: 00000000f77cf0b70c960408a0b2f0b700000000
> Sending packet: $mb7f0b2a0,14#52...Ack
> Packet received: 00e0eeb71481040828aff0b758b9f0b770b6f0b7
> Sending packet: $m8048114,4#37...Ack
> Packet received: 2f6c6962
> Sending packet: $m8048118,4#3b...Ack
> Packet received: 2f6c642d
> Sending packet: $m804811c,4#66...Ack
> Packet received: 6c696e75
> Sending packet: $m8048120,4#34...Ack
> Packet received: 782e736f
> Sending packet: $m8048124,4#38...Ack
> Packet received: 2e320000
> Sending packet: $mb7f0b958,14#35...Ack
> Packet received: 00f0eeb7f77cf0b72cd3eeb700000000a0b2f0b7
> Sending packet: $mb7f07cf4,4#30...Ack
> Packet received: 20090a00
> Sending packet: $mb7f0b658,4#01...Ack
> Packet received: 01000000
> Sending packet: $z0,8048465,1#a6... 1027636 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 1027636 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 1027703 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 1027703 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $s#73... 1027840 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 1027840 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 1027840 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 0000000058b6f0b7d4e0eeb7f4aff0b7a0d0b5bf60d2b5bf70b6f0b758b6f0b751cbefb746020000730000007b0000007b0000007b0000000000000000000000
> Sending packet: $Z0,8048465,1#86... 1027978 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1027979 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 1028047 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1028047 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $c#63... 1028184 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> Ack
> 1028402 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 1028402 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 58b6f0b758b6f0b700000000f4aff0b700d0b5bf60d2b5bf000000000100000051cbefb746020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $P8=50cbefb7#53... 1028466 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xb7efcb50
> Ack
> Packet received: OK
> Sending packet: $P29=ffffffff#28... 1028535 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xffffffff
> Ack
> Packet received: OK
> Sending packet: $m8049658,4#45...Ack
> Packet received: 58b6f0b7
> Sending packet: $mb7f0b65c,4#2c...Ack
> Packet received: 70b6f0b7
> Sending packet: $mb7f0b670,14#2c...Ack
> Packet received: 00000000f77cf0b70c96040858b9f0b700000000
> Sending packet: $mb7f0b958,14#35...Ack
> Packet received: 00f0eeb7f77cf0b72cd3eeb7b8c8eeb770b6f0b7
> Sending packet: $mb7f07cf4,4#30...Ack
> Packet received: 20090a00
> Sending packet: $mb7eec8b8,14#96...Ack
> Packet received: 0000e1b738c8eeb7a012ecb740cceeb758b9f0b7
> Sending packet: $mb7eec838,4#36...Ack
> Packet received: 2f686f6d
> Sending packet: $mb7eec83c,4#61...Ack
> Packet received: 652f6a75
> Sending packet: $mb7eec840,4#2f...Ack
> Packet received: 6c65732f
> Sending packet: $mb7eec844,4#33...Ack
> Packet received: 756e646f
> Sending packet: $mb7eec848,4#37...Ack
> Packet received: 2d776f72
> Sending packet: $mb7eec84c,4#62...Ack
> Packet received: 6b2f6772
> Sending packet: $mb7eec850,4#30...Ack
> Packet received: 65676a75
> Sending packet: $mb7eec854,4#34...Ack
> Packet received: 6c65732f
> Sending packet: $mb7eec858,4#38...Ack
> Packet received: 6264622f
> Sending packet: $mb7eec85c,4#63...Ack
> Packet received: 5f796162
> Sending packet: $mb7eec860,4#31...Ack
> Packet received: 732f7072
> Sending packet: $mb7eec864,4#35...Ack
> Packet received: 656c6f61
> Sending packet: $mb7eec868,4#39...Ack
> Packet received: 64312c2d
> Sending packet: $mb7eec86c,4#64...Ack
> Packet received: 666e6f2d
> Sending packet: $mb7eec870,4#32...Ack
> Packet received: 73746163
> Sending packet: $mb7eec874,4#36...Ack
> Packet received: 6b2d7072
> Sending packet: $mb7eec878,4#3a...Ack
> Packet received: 6f746563
> Sending packet: $mb7eec87c,4#65...Ack
> Packet received: 746f722c
> Sending packet: $mb7eec880,4#33...Ack
> Packet received: 6370753d
> Sending packet: $mb7eec884,4#37...Ack
> Packet received: 69363836
> Sending packet: $mb7eec888,4#3b...Ack
> Packet received: 2c646562
> Sending packet: $mb7eec88c,4#66...Ack
> Packet received: 75672c67
> Sending packet: $mb7eec890,4#34...Ack
> Packet received: 63633d34
> Sending packet: $mb7eec894,4#38...Ack
> Packet received: 2e332e34
> Sending packet: $mb7eec898,4#3c...Ack
> Packet received: 2c6f733d
> Sending packet: $mb7eec89c,4#67...Ack
> Packet received: 4c696e75
> Sending packet: $mb7eec8a0,4#5c...Ack
> Packet received: 782c6f73
> Sending packet: $mb7eec8a4,4#60...Ack
> Packet received: 763d322e
> Sending packet: $mb7eec8a8,4#64...Ack
> Packet received: 362e3330
> Sending packet: $mb7eec8ac,4#8f...Ack
> Packet received: 2d312d36
> Sending packet: $mb7eec8b0,4#5d...Ack
> Packet received: 38362e73
> Sending packet: $mb7eec8b4,4#61...Ack
> Packet received: 6f000000
> Sending packet: $mb7eecc40,14#8b...Ack
> Packet received: 00a0c9b720cceeb77c4ddfb70090c9b7b8c8eeb7
> Sending packet: $mb7eecc20,4#58...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7eecc24,4#5c...Ack
> Packet received: 2f693638
> Sending packet: $mb7eecc28,4#60...Ack
> Packet received: 362f636d
> Sending packet: $mb7eecc2c,4#8b...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7eecc30,4#59...Ack
> Packet received: 6962632e
> Sending packet: $mb7eecc34,4#5d...Ack
> Packet received: 736f2e36
> Sending packet: $mb7eecc38,4#61...Ack
> Packet received: 00000000
> Sending packet: $mb7c99000,14#fc...Ack
> Packet received: 0050c9b7d0ceeeb7d07ec9b7b092c9b740cceeb7
> Sending packet: $mb7eeced0,4#8c...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7eeced4,4#90...Ack
> Packet received: 2f693638
> Sending packet: $mb7eeced8,4#94...Ack
> Packet received: 362f636d
> Sending packet: $mb7eecedc,4#bf...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7eecee0,4#8d...Ack
> Packet received: 6962646c
> Sending packet: $mb7eecee4,4#91...Ack
> Packet received: 2e736f2e
> Sending packet: $mb7eecee8,4#95...Ack
> Packet received: 32000000
> Sending packet: $mb7c992b0,14#30...Ack
> Packet received: 00f0c6b79092c9b7f03ec9b7a0b2f0b70090c9b7
> Sending packet: $mb7c99290,4#d6...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7c99294,4#da...Ack
> Packet received: 2f693638
> Sending packet: $mb7c99298,4#de...Ack
> Packet received: 362f636d
> Sending packet: $mb7c9929c,4#09...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7c992a0,4#fe...Ack
> Packet received: 69626d2e
> Sending packet: $mb7c992a4,4#02...Ack
> Packet received: 736f2e36
> Sending packet: $mb7c992a8,4#06...Ack
> Packet received: 00000000
> Sending packet: $mb7f0b2a0,14#52...Ack
> Packet received: 00e0eeb71481040828aff0b700000000b092c9b7
> Sending packet: $m8048114,4#37...Ack
> Packet received: 2f6c6962
> Sending packet: $m8048118,4#3b...Ack
> Packet received: 2f6c642d
> Sending packet: $m804811c,4#66...Ack
> Packet received: 6c696e75
> Sending packet: $m8048120,4#34...Ack
> Packet received: 782e736f
> Sending packet: $m8048124,4#38...Ack
> Packet received: 2e320000
> Sending packet: $mb7f0b658,4#01...Ack
> Packet received: 01000000
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $m8048454,e#6f...Ack
> Packet received: 8d4c240483e4f0ff71fc5589e551
> Sending packet: $m804845e,1#6c...Ack
> Packet received: 55
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m8048460,5#3c...Ack
> Packet received: e55183ec24
> Sending packet: $m804845f,1#6d...Ack
> Packet received: 89
> Sending packet: $m8048460,1#38...Ack
> Packet received: e5
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048461,1#39...Ack
> Packet received: 51
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048462,1#3a...Ack
> Packet received: 83
> Sending packet: $m8048454,1#3b...Ack
> Packet received: 8d
> Sending packet: $z0,8048465,1#a6... 1034661 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 1034661 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 1042316 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> Ack
> 1042316 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $s#73... 1042452 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 1042452 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 1042452 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 58b6f0b758b6f0b700000000f4aff0b7fccfb5bf60d2b5bf000000000100000051cbefb746020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $Z0,8048465,1#86... 1042589 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1042589 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 1042658 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 1042658 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $c#63... 1042796 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> Ack
> 1042802 debug.c:231:debug_setstate [17890:17890]: have set state to 0x5fe5d9d0
> 1042825 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 1042825 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 58b6f0b758b6f0b700000000f4aff0b77cc9b5bfe8c9b5bfeccab5bf0000000051cbefb746020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $P8=50cbefb7#53... 1042933 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xb7efcb50
> Ack
> Packet received: OK
> Sending packet: $P29=ffffffff#28... 1043002 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xffffffff
> Ack
> Packet received: OK
> Sending packet: $m8049658,4#45...Ack
> Packet received: 58b6f0b7
> Sending packet: $mb7f0b65c,4#2c...Ack
> Packet received: 70b6f0b7
> Sending packet: $mb7f0b670,14#2c...Ack
> Packet received: 00000000f77cf0b70c96040858b9f0b700000000
> Sending packet: $mb7f0b958,14#35...Ack
> Packet received: 00f0eeb7f77cf0b72cd3eeb7b8c8eeb770b6f0b7
> Sending packet: $mb7f07cf4,4#30...Ack
> Packet received: 20090a00
> Sending packet: $mb7eec8b8,14#96...Ack
> Packet received: 0000e1b738c8eeb7a012ecb740cceeb758b9f0b7
> Sending packet: $mb7eec838,4#36...Ack
> Packet received: 2f686f6d
> Sending packet: $mb7eec83c,4#61...Ack
> Packet received: 652f6a75
> Sending packet: $mb7eec840,4#2f...Ack
> Packet received: 6c65732f
> Sending packet: $mb7eec844,4#33...Ack
> Packet received: 756e646f
> Sending packet: $mb7eec848,4#37...Ack
> Packet received: 2d776f72
> Sending packet: $mb7eec84c,4#62...Ack
> Packet received: 6b2f6772
> Sending packet: $mb7eec850,4#30...Ack
> Packet received: 65676a75
> Sending packet: $mb7eec854,4#34...Ack
> Packet received: 6c65732f
> Sending packet: $mb7eec858,4#38...Ack
> Packet received: 6264622f
> Sending packet: $mb7eec85c,4#63...Ack
> Packet received: 5f796162
> Sending packet: $mb7eec860,4#31...Ack
> Packet received: 732f7072
> Sending packet: $mb7eec864,4#35...Ack
> Packet received: 656c6f61
> Sending packet: $mb7eec868,4#39...Ack
> Packet received: 64312c2d
> Sending packet: $mb7eec86c,4#64...Ack
> Packet received: 666e6f2d
> Sending packet: $mb7eec870,4#32...Ack
> Packet received: 73746163
> Sending packet: $mb7eec874,4#36...Ack
> Packet received: 6b2d7072
> Sending packet: $mb7eec878,4#3a...Ack
> Packet received: 6f746563
> Sending packet: $mb7eec87c,4#65...Ack
> Packet received: 746f722c
> Sending packet: $mb7eec880,4#33...Ack
> Packet received: 6370753d
> Sending packet: $mb7eec884,4#37...Ack
> Packet received: 69363836
> Sending packet: $mb7eec888,4#3b...Ack
> Packet received: 2c646562
> Sending packet: $mb7eec88c,4#66...Ack
> Packet received: 75672c67
> Sending packet: $mb7eec890,4#34...Ack
> Packet received: 63633d34
> Sending packet: $mb7eec894,4#38...Ack
> Packet received: 2e332e34
> Sending packet: $mb7eec898,4#3c...Ack
> Packet received: 2c6f733d
> Sending packet: $mb7eec89c,4#67...Ack
> Packet received: 4c696e75
> Sending packet: $mb7eec8a0,4#5c...Ack
> Packet received: 782c6f73
> Sending packet: $mb7eec8a4,4#60...Ack
> Packet received: 763d322e
> Sending packet: $mb7eec8a8,4#64...Ack
> Packet received: 362e3330
> Sending packet: $mb7eec8ac,4#8f...Ack
> Packet received: 2d312d36
> Sending packet: $mb7eec8b0,4#5d...Ack
> Packet received: 38362e73
> Sending packet: $mb7eec8b4,4#61...Ack
> Packet received: 6f000000
> Sending packet: $mb7eecc40,14#8b...Ack
> Packet received: 00a0c9b720cceeb77c4ddfb70090c9b7b8c8eeb7
> Sending packet: $mb7eecc20,4#58...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7eecc24,4#5c...Ack
> Packet received: 2f693638
> Sending packet: $mb7eecc28,4#60...Ack
> Packet received: 362f636d
> Sending packet: $mb7eecc2c,4#8b...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7eecc30,4#59...Ack
> Packet received: 6962632e
> Sending packet: $mb7eecc34,4#5d...Ack
> Packet received: 736f2e36
> Sending packet: $mb7eecc38,4#61...Ack
> Packet received: 00000000
> Sending packet: $mb7c99000,14#fc...Ack
> Packet received: 0050c9b7d0ceeeb7d07ec9b7b092c9b740cceeb7
> Sending packet: $mb7eeced0,4#8c...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7eeced4,4#90...Ack
> Packet received: 2f693638
> Sending packet: $mb7eeced8,4#94...Ack
> Packet received: 362f636d
> Sending packet: $mb7eecedc,4#bf...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7eecee0,4#8d...Ack
> Packet received: 6962646c
> Sending packet: $mb7eecee4,4#91...Ack
> Packet received: 2e736f2e
> Sending packet: $mb7eecee8,4#95...Ack
> Packet received: 32000000
> Sending packet: $mb7c992b0,14#30...Ack
> Packet received: 00f0c6b79092c9b7f03ec9b7a0b2f0b70090c9b7
> Sending packet: $mb7c99290,4#d6...Ack
> Packet received: 2f6c6962
> Sending packet: $mb7c99294,4#da...Ack
> Packet received: 2f693638
> Sending packet: $mb7c99298,4#de...Ack
> Packet received: 362f636d
> Sending packet: $mb7c9929c,4#09...Ack
> Packet received: 6f762f6c
> Sending packet: $mb7c992a0,4#fe...Ack
> Packet received: 69626d2e
> Sending packet: $mb7c992a4,4#02...Ack
> Packet received: 736f2e36
> Sending packet: $mb7c992a8,4#06...Ack
> Packet received: 00000000
> Sending packet: $mb7f0b2a0,14#52...Ack
> Packet received: 00e0eeb71481040828aff0b700000000b092c9b7
> Sending packet: $m8048114,4#37...Ack
> Packet received: 2f6c6962
> Sending packet: $m8048118,4#3b...Ack
> Packet received: 2f6c642d
> Sending packet: $m804811c,4#66...Ack
> Packet received: 6c696e75
> Sending packet: $m8048120,4#34...Ack
> Packet received: 782e736f
> Sending packet: $m8048124,4#38...Ack
> Packet received: 2e320000
> Sending packet: $mb7f0b658,4#01...Ack
> Packet received: 01000000
> Sending packet: $z0,8048465,1#a6... 9594 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 9594 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 9663 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 9663 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $s#73... 9801 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 9801 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 9801 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: 58b6f0b758b6f0b700000000f4aff0b778c9b5bfe8c9b5bfeccab5bf0000000051cbefb746020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $Z0,8048465,1#86... 9938 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 9938 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 10007 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 10007 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $c#63... 10144 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> Ack
> undodb: license type: demo, user: test user
> 10578 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 10578 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304086684040882020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $P8=65840408#68... 10646 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0x8048465
> Ack
> Packet received: OK
> Sending packet: $P29=ffffffff#28... 10715 gdb7/js_undodb_server.c:783:command_loop [17884:17884]: have read value=0xffffffff
> Ack
> Packet received: OK
> Sending packet: $z0,8048465,1#a6... 10784 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 10784 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 10853 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 10853 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
>
> Sending packet: $m8048465,1#3d...Ack
> Packet received: c7
> Breakpoint 1, main () at test/test16.c:13
> 13 for ( i=0; i<10; ++i)
> (gdb) undodb-get-n
> current "simulated time" is 256
> (gdb) step
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $s#73... 26351 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 26352 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 26352 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304086c84040882020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $Z0,8048465,1#86... 26488 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 26488 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 26558 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 26558 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7cc51b0,1#6a... 26626 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 26626 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7cc51b0 length=1
> Ack
> Packet received: OK
> Sending packet: $Hc0#db...Ack
> Packet received: E05
> Sending packet: $s#73... 26763 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 26765 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 26765 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304088f84040882020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $m804848f,1#70...Ack
> Packet received: 83
> Sending packet: $s#73... 26970 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> Ack
> 26971 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 26972 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304089384040893020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $s#73... 27108 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_SINGLESTEP
> 27109 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 27109 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Ack
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304086e84040893020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $m804846e,1#6d...Ack
> Packet received: 8b
> Sending packet: $z0,8048465,1#a6... 27314 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 27314 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 27382 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 27382 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7cc51b0,1#8a... 27451 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> Ack
> 27451 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7cc51b0 length=1
> Packet received: OK
> 15 fprintf( stderr, "test16.c: i=%i\n", i);
> (gdb) info register eip
> eip 0x804846e 0x804846e <main+26>
> (gdb) undodb-set-bookmark
> Bookmark 0
> (gdb) backtrace
> #0 main () at test/test16.c:15
> (gdb) [ id=0 function='main' filename='test/test16.c' line=15]
> reverse-stepi
> Sending packet: $Z0,8048465,1#86... 28922 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 28922 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 28984 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 28984 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $bs#d5...Ack
> 29240 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304089384040893020000730000007b0000007b0000007b0000000000000033000000
> Sending packet: $m8048493,1#3e...Ack
> Packet received: 7e
> Sending packet: $z0,8048465,1#a6... 29377 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 29377 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 29445 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 29445 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> 0x08048493 13 for ( i=0; i<10; ++i)
> eip 0x8048493 0x8048493 <main+63>
> (gdb) continue
> Continuing.
> Sending packet: $Z0,8048465,1#86... 29956 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 29956 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 30022 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 30023 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $c#63... 30091 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> Ack
> 30094 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig= 5 (SIGTRAP)
> 30094 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S05
> Packet received: S05
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304086e84040893020000730000007b0000007b0000007b0000000000000033000000
>
> Program received signal SIGTRAP, Trace/breakpoint trap.
> Sending packet: $z0,8048465,1#a6... 30229 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 30230 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 30298 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 30298 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $m804846e,1#6d...Ack
> Packet received: 8b
> main () at test/test16.c:15
> 15 fprintf( stderr, "test16.c: i=%i\n", i);
> (gdb) bbcount=undodb-get-n
> current "simulated time" is 258
> (gdb) 258
> continue
> Continuing.
> Sending packet: $Z0,8048465,1#86... 31021 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 31021 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $Z0,b7efcb50,1#a1... 31088 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=Z
> 31088 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: Z0: set software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $c#63... 31157 gdb7/js_undodb_server.c:441:command_loop [17884:17884]: doing PTRACE_CONT
> Ack
> test16.c: i=0
> test16.c: i=1
> test16.c: i=2
> test16.c: i=3
> test16.c: i=4
> test16.c: i=5
> test16.c: i=6
> test16.c: i=7
> test16.c: i=8
> test16.c: i=9
> causing deliberate segv
> 31167 gdb7/js_undodb_server.c:450:command_loop [17884:17884]: undodb_waitpid() returned: pid=17890, WIFSTOPPED, sig=11 (SIGSEGV)
> 31167 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: S0b
> Packet received: S0b
> Sending packet: $g#67...Ack
> Packet received: 0000000018000000f460dfb7f44fdfb710d2b5bf38d2b5bf10850408a0830408bf84040846020100730000007b0000007b0000007b0000000000000033000000
>
> Program received signal SIGSEGV, Segmentation fault.
> Sending packet: $z0,8048465,1#a6... 31296 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 31296 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0x8048465 length=1
> Ack
> Packet received: OK
> Sending packet: $z0,b7efcb50,1#c1... 31364 gdb7/js_undodb_server.c:817:command_loop [17884:17884]: command=z
> 31364 gdb7/js_undodb_server.c:832:command_loop [17884:17884]: z0: clear software breakpoint address=0xb7efcb50 length=1
> Ack
> Packet received: OK
> Sending packet: $m80484bf,1#9a...Ack
> Packet received: c7
> 0x080484bf in main () at test/test16.c:18
> 18 *(int*)0=0;
> (gdb) bbcount=undodb-get-n
> current "simulated time" is 2811
> (gdb) 2811
> info register eip
> eip 0x80484bf 0x80484bf <main+107>
> (gdb) undodb-goto-n 256
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf2735c97001000000f44fdfb74cd2b5bfa8d2b5bf10850408a08304085484040846020000730000007b0000007b0000007b0000000000000033000000
> (gdb) info register eip
> eip 0x8048454 0x8048454 <main>
> (gdb) undodb-get-n
> current "simulated time" is 256
> (gdb) undodb-goto-bookmark 0
> Sending packet: $g#67...Ack
> Packet received: d4d2b5bf50d2b5bf01000000f44fdfb710d2b5bf38d2b5bf10850408a08304086e84040893020000730000007b0000007b0000007b0000000000000033000000
> (gdb) info register eip
> eip 0x804846e 0x804846e <main+26>
> (gdb) q
> A debugging session is active.
>
> Inferior 2 [Remote target] will be killed.
>
> Quit anyway? (y or n) y
> Sending packet: $vKill;a410#33...Ack
> Packet received: OK
> Sending packet: $?#3f... 33419 gdb7/gdbserial.c:329:gdbserial_send_waitpid_response2 [17884:17884]: sending: X09
> Ack
> Packet received: X09
> 33490 net.c:46:net_readrepeat [17884:17884]: fd=5, n=1, sys_read() returned 0, t=1259018990, sys_time()=1259018990
> yabs 0: remaking: ./tests_nr41,remote=1,gdb=/home/jules/gdb_cvs,,19-oct-2009
>
>
> Many thanks,
>
> - Julian
>
> --
> http://undo-software.com/
>
More information about the Gdb
mailing list