Re: CA clients on vxWorks

[Matthieu Bec <mbec@gemini.edu>]

Hi,

I tried with R3.12.2 and R3.13.4
My target's an mv2700, vxWorks 5.3.1 in both case

For the loading issue, I got 'similar' results for both release.
For channel access using iocCore, it worked with 3.13.4, but not 3.12.2

the details (taken from 3.12.2)


->  ld < ./libCom
Undefined symbol: iocLogVPrintf (binding 1 type 0)
Undefined symbol: TScurrentTimeStamp (binding 1 type 0)
Undefined symbol: setFPE (binding 1 type 0)
value = 67104488 = 0x3ffeee8 = phead + 0x760

-> ld < ./caLib
Undefined symbol: db_get_field (binding 1 type 0)
Undefined symbol: db_put_field (binding 1 type 0)
Undefined symbol: db_start_events (binding 1 type 0)
Undefined symbol: db_name_to_addr (binding 1 type 0)
Undefined symbol: db_sizeof_event_block (binding 1 type 0)
Undefined symbol: dbNotifyCancel (binding 1 type 0)
Undefined symbol: taskwdRemove (binding 1 type 0)
Undefined symbol: db_init_events (binding 1 type 0)
Undefined symbol: callbackRequest (binding 1 type 0)
Undefined symbol: dbPutNotifyMapType (binding 1 type 0)
Undefined symbol: db_cancel_event (binding 1 type 0)
Undefined symbol: db_close_events (binding 1 type 0)
Undefined symbol: taskwdInsert (binding 1 type 0)
Undefined symbol: db_add_event (binding 1 type 0)
Undefined symbol: setFPE (binding 1 type 0)
Undefined symbol: db_post_extra_labor (binding 1 type 0)
Undefined symbol: db_add_extra_labor_event (binding 1 type 0)
Undefined symbol: dbPutNotify (binding 1 type 0)
Undefined symbol: db_post_single_event (binding 1 type 0)
value = 67089176 = 0x3ffb318


I tried again with:

->  ld < ./libCom
->  ld < ./dbLib
->  ld < ./caLib

here I get undefined ca_ symbols while loading dbLib, so I guess the
later two need be linked before loading.
Unless there's some compilation flags to void db symbols in the CA
library, I'll load the whole iocCore.
The original idea was for me to load the bare minimum code:
  libCom + libCa ~ 272 Kb
  dbLib ~ 574 Kb
  iocCore ~ 1.1 Mb

How much of dbLib do we actually need to do channel access ?


------------------------------------

now, I've loaded iocCore, few putenv, and a simple caget routine:


on 3.12.2:
==========
-> caget "sim5:trigger.DESC",1000
ca_task_initialize
ca_search

data access
Exception current instruction address: 0x00112184
Machine Status Register: 0x0000b130
Data Access Register: 0xf036000f
Condition Register: 0x28400042
Data storage interrupt Register: 0x40000000

1839f8 vxTaskEntry    +60 : shell ()
13bdb8 shell          +18c: 13bde4 ()
13bfec shell          +3c0: execute ()
13c16c execute        +d8 : yyparse ()
1a2c5c yyparse        +7a8: 1a0bc0 ()
1a0d38 yystart        +8f8: caget (3ba6d50, 3e8)
3ba51ec caget          +114: ca_search_and_connect (3ba6d50, 3bcc048, 0,
0)
3a54c64 ca_search_and_connect+d8 : db_name_to_addr (3ba6d50, 3bcbfe8)
3a22d60 db_name_to_addr+3c : dbNameToAddr (3ba6d50, 3bcbfe8)
39dfef4 dbNameToAddr   +6c : dbPvdFind (3bcbf48, 3ba6d5c, 0)
3a071e4 dbPvdFind      +b4 : memset ()
shell restarted.


on 3.13.4
=========
that worked !

Thanks,

 Matthieu


-- 
Matthieu Bec              Gemini Observatory
Tel: +1 808 9742557       670 N. A'ohoku Place
Fax: +1 808 9359235       Hilo, Hawaii 96720, USA