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Universal framework for machine control based on Hardware Abstraction Layer principle
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hm2_soc_ol.so: undefined symbol: hm2_unregister #99

Open ArcEye opened 6 years ago

ArcEye commented 6 years ago

Issue by luminize Wed Aug 30 13:11:36 2017 Originally opened as https://github.com/machinekit/machinekit/issues/1264

Happens when trying to load a different FPGA configuration when restarting a realtime environment

see output below when trying to load config="firmware=socfpga/dtbo/DE0_Nano_SoC_DB25.7I76_7I76_7I76_7I76.dtbo num_stepgens=5 enable_adc=1" debug=1

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Last login: Wed Aug 30 12:37:08 2017 from t5400.fritz.box
environment set up for RIP build in /home/machinekit/machinekit/src
machinekit@mksocfpga:~$ export DEBUG=5
machinekit@mksocfpga:~$ halrun -I
msgd:0 stopped
rtapi:0 stopped
halcmd: loadrt hostmot2
<stdin>:1: Realtime module 'hostmot2' loaded
halcmd: newinst hm2_soc_ol hm2-socfpga0 -- config="firmware=socfpga/dtbo/DE0_Nano_SoC_DB25.7I76_7I76_7I76_7I76.dtbo num_stepgens=5" debug=1
<stdin>:2: Realtime module 'hm2_soc_ol' loaded
halcmd: exit
<commandline>:0: Realtime threads stopped
machinekit@mksocfpga:~$ halrun -I
msgd:0 stopped
rtapi:0 stopped
halcmd: loadrt hostmot2
<stdin>:1: Realtime module 'hostmot2' loaded
halcmd: newinst hm2_soc_ol hm2-socfpga0 -- config="firmware=socfpga/dtbo/DE0_Nano_SoC_DB25.7I76_7I76_7I76_7I76.dtbo num_stepgens=5" debug=1
<stdin>:2: Realtime module 'hm2_soc_ol' loaded
halcmd: exit
<commandline>:0: Realtime threads stopped
machinekit@mksocfpga:~$ halrun -I
msgd:0 stopped
rtapi:0 stopped
halcmd: newinst hm2_soc_ol hm2-socfpga0 -- config="firmware=socfpga/dtbo/DE0_Nano_SoC_DB25.7I76_7I76_7I76_7I76.dtbo num_stepgens=5 enable_adc=1" debug=1
<stdin>:1: insmod failed, returned -1:
do_load_cmd: dlopen: /home/machinekit/machinekit/rtlib/rt-preempt/hm2_soc_ol.so: undefined symbol: hm2_unregister
rpath=/home/machinekit/machinekit/rtlib/rt-preempt:/home/machinekit/machinekit/lib
See /var/log/linuxcnc.log for more information.
halcmd: exit
<commandline>:0: Realtime threads stopped

snip from /var/log/linuxcnc.log

Aug 30 12:58:50 mksocfpga msgd:0: zeroconf: registered 'Log service on mksocfpga.local pid 2198' _machinekit._tcp 0 TXT "uuid=a42c8c6b-4025-4f83-ba28-dad21114744a" "instance=f7baa52c-8d82-11e7-8779-bad04a9c4ece" "service=log" "dsn=ipc:///tmp/0.log.a42c8c6b-4025-4f83-ba28-dad21114744a"
Aug 30 12:59:01 mksocfpga rtapi:0: do_load_cmd: dlopen: /home/machinekit/machinekit/rtlib/rt-preempt/hm2_soc_ol.so: undefined symbol: hm2_unregister
Aug 30 12:59:01 mksocfpga rtapi:0: rpath=/home/machinekit/machinekit/rtlib/rt-preempt:/home/machinekit/machinekit/lib
Aug 30 12:59:01 mksocfpga rtapi:0: 1:rtapi_app:2203:user do_load_cmd: dlopen: /home/machinekit/machinekit/rtlib/rt-preempt/hm2_soc_ol.so: undefined symbol: hm2_unregister
Aug 30 12:59:01 mksocfpga rtapi:0: 1:rtapi_app:2203:user rpath=/home/machinekit/machinekit/rtlib/rt-preempt:/home/machinekit/machinekit/lib

RIP build commit:

machinekit@mksocfpga:~/machinekit$ git log
commit 680d20cf9de9d34b7a906ef58e68461760db01b7
Merge: 4a09bfd 0e87824
Author: cdsteinkuehler <charles@steinkuehler.net>
Date:   Sun Aug 27 10:09:39 2017 -0500

    Merge pull request #1253 from the-snowwhite/DE0_Nana_SoC_Cramps

    De0 nano soc cramps
ArcEye commented 6 years ago

Comment by the-snowwhite Thu Aug 31 21:23:55 2017

Odd This is the only change I can think of related to the new _CRAMPS commit series that directly affects the (other) DE0_Nano_SoC_DB25 quartus project:

https://github.com/machinekit/mksocfpga/commit/fca882b8bc25ff2e2e81b4a0979ee2c6bf7c041e#diff-0500c35c248378bdb66c98fea8742ad8L646

https://github.com/machinekit/mksocfpga/commit/fca882b8bc25ff2e2e81b4a0979ee2c6bf7c041e

ArcEye commented 6 years ago

Comment by ArcEye Fri Sep 1 11:29:50 2017

@luminize Try running nm -C hm2_soc_ol.so if that does not produce anything the regular symbols have probably been stripped so try nm -D hm2_soc_ol.c

That should produce this

root@armv7-bb:/downloads# nm -D hm2_soc_ol.so
         U __aeabi_unwind_cpp_pr0
         .......
         U hm2_register
         U hm2_unregister
         .......
         U __xstat

Then try hostmot2.so from the same build

root@armv7-bb:/downloads# nm -D hostmot2.so
         U __aeabi_unwind_cpp_pr0
         ......
00015958 T hm2_allocate_bspi_tram
00015ea0 T hm2_bspi_set_read_function
00015a8c T hm2_bspi_setup_chan
00015f54 T hm2_bspi_set_write_function
000159c4 T hm2_bspi_write_chan
00002264 T hm2_get_bspi
0000238c T hm2_get_pktuart
00002420 T hm2_get_sserial
000022f8 T hm2_get_uart
00017598 T hm2_pktuart_read
00017200 T hm2_pktuart_send
00017050 T hm2_pktuart_setup
00003e40 T hm2_register
0001580a T hm2_tram_add_bspi_frame
00016974 T hm2_uart_read
000166b0 T hm2_uart_send
000164f8 T hm2_uart_setup
00004c84 T hm2_unregister
        .......
         U __xstat

These prints are from a natively built package prior to any commits from this work

The hm2_unregister is specifically exported at https://github.com/machinekit/machinekit/blob/master/src/hal/drivers/mesa-hostmot2/hostmot2.c#L1752

Seems peculiar that that symbol would be missing but not hm2_register, which must occur first ☹️

ArcEye commented 6 years ago

Comment by luminize Fri Sep 1 12:00:09 2017

Here are 3 outputs, from hm2_soc_ol, hostmot2 and hm2_pci https://gist.github.com/luminize/1c0cad043854a53451e714ff5ed3412a https://gist.github.com/luminize/e632ff0c23a5ce3ac5ddf9c7317e6824 https://gist.github.com/luminize/688eb6ad21ee5ab3bec484de72ae1c98

hm2_soc_ol, line 60

00000f18 t hm2_soc_write
         U hm2_unregister
00000b8c t _init

hostmot2, line 450

00017ed0 t hm2_uart_write
00004e94 T hm2_unregister
0001bb2c t hm2_waitirq

hm2_pci, line 55

         U hm2_register
         U hm2_unregister
0000081c t _init
ArcEye commented 6 years ago

Comment by ArcEye Fri Sep 1 14:37:27 2017

Looks to be pretty much as it should be. Can't do a direct comparison because you used the -C switch and the binary package I opened had all the symbols stripped. Might mean something to the others, or it might be nothing to do with it.

ArcEye commented 6 years ago

Comment by machinekoder Thu Nov 16 11:50:28 2017

@luminize In your output above the line <stdin>:1: Realtime module 'hostmot2' loaded is missing. I had got exactly the same error message when I forgot to load the hostmot2 module.