Hello, Thanks for the response!
>> I have been integrating the RoHC library into a project and it appears >> to be working in most cases. However, in order to get it to compile, >> we've had to patch several files to replace 64-bit variables with >> 32-bit variables. If I do not make this patch, the following routines >> come up as "undefined": >> __aeabi_ul2d >> __aeabi_d2ulz >> __aeabi_dmul >> __aeabi_ddiv >> __aeabi_uldivmod > I'm surprised because the 1.7.0 release was tested on an ARM platform. > Maybe due to differences between the 2 ARM cores, or maybe the build chain. It very well may be an issue with the toolchain. I am building RoHC into a Linux Kernel Module and calling it from another LKM. Toolchain does not appear to Support 64-bit division in the kernel so I get the above "undefined" errors. For version 1.7.0 I applied a patch to replace all uint64_t with long and time_t data types. The TCP profile actually worked fairly well. I was able to get SCP, FTP, and serial-over-TCP running, albeit in light traffic. This worked in the short term for some preliminary testing. I have since switched to using the master branch for the long term. When I build it, only __aeabi_uldivmod appears to be undefined. > What patch? I see no attachment. Maybe the mailing list drops it if it > is too large. Apologies for the missing file! :-) I have attached the patch I applied to the master branch. Just like the 1.7.0 patch, it replaces all uint64_t variables with type long, to prevent undefined routines. This builds (with several warnings), but unfortunately crashes during rohc_decompress3() when a TCP session is opened. ICMP traffic passes without issue. Are the timer structures in the library required to be uint64_t? Is it possible my patch is causing the crash? I've turned tracing on but kernel panics usually prevent me from figuring out the exact point of the crash. > The problems with TCP (and by the way HTTP) are well-known. The TCP > profile for the 1.7.x releases is not mature. If you want to test the > TCP profile, prefer using the master branch on github (I've yet to > push a lot of new fixes) : > https://github.com/didier-barvaux/rohc I also get the following warnings when building from master: src/decomp/d_tcp.c:880:1: warning: the frame size of 16376 bytes is larger than 1024 bytes [-Wframe-larger-than=] src/decomp/rohc_decomp_rfc3095.c:1671:1: warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=] My apologies for the long-winded e-mail. :-) Regards, -Alex =========================================================== Alexandros Charissis email: [email protected] GE Digital Energy GE MDS, L.L.C 175 Science Parkway Phone - (585) 242-8402 Rochester, New York 14620, USA Fax - (585) 241-5590 ===========================================================
rohc-aeabi-patch-master.patch
Description: rohc-aeabi-patch-master.patch
_______________________________________________ Mailing list: https://launchpad.net/~rohc Post to : [email protected] Unsubscribe : https://launchpad.net/~rohc More help : https://help.launchpad.net/ListHelp
