topic Re: Linker Message - missing symbol on S12X port in S12 / MagniV Microcontrollers

Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 00:57:26 GMT

I am trying to port a little bit of CAN code from S08DZ to S12XD using CodeWarrior for HCS12 V4.7. (attached)

I have cleared up many things but the following is confusing me.

I am getting message Link Error : L1822 saying symbols _LSHRU, _BSHL, and _LSHL are undefined. I do not recognize these symbols. I cannot find any of them in my S08DZ or S12XD code. I suppose they are specific to one or the other target.

I had a similar message regarding symbol _Startup, which I fix by getting the start12 files in the same place. There was no message that I was missing those files. Am I missing some S12XD file that has these symbols? Some memory map?

These symbols are said to be missing from a file that was originally a CAN.c file generated by PE for the S08DZ. I do not intend to continue to use the PE generated code for CAN so I wish to learn what is going on here.

Thanks.

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 01:57:24 GMT

OK, I think these may be S12X symbols, specifically associated with XGATE shared memory.

SHL = Shared Region Lower?

http://notes-application.abcelectronique.com/314/314-68219.pdf

Let me note at this point, that I intend to start out with XGATE turned off and employ it later where it can do the most good.

Re: Linker Message - missing symbol on S12X port

kef — Wed, 13 Oct 2010 02:07:38 GMT

_BSHL is byte shift left routine, _LSHRU - long shift right unsigned, _LSHL - long shift left

I guess you removed or forgot to add required library file.

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 02:30:51 GMT

But the question remains, what and where are these symbols?

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 02:38:38 GMT

kef- "I guess you removed or forgot to add required library file."

I'm thinking that, too, but I haven't figured which one yet,

Thought for a moment it might be the mc9s12xdp512.h/.inc files?

Re: Linker Message - missing symbol on S12X port

CompilerGuru — Wed, 13 Oct 2010 02:44:17 GMT

Those are part of the compilers runtime support.

So either link against the proper ansi library (see lib/hc12c/readme.txt) or include the lib/hc12c/src/rtshc12.c in your build.

In general it might be easier to start with a wizard generated project than from scratch to have such things taken care of properly.

Daniel

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 02:56:22 GMT

Daniel - "In general it might be easier to start with a wizard generated project than from scratch to have such things taken care of properly."

Sure. But, I was curious to see how PE would work if I could change processors just by deselecting the S08DZ and selecting the S12XD.

I will look at the libraries you suggested. And also try making a new empty project and import my existing code into that.

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 02:59:02 GMT

"_BSHL is byte shift left routine"

Some ancient memory was actually trying to tell me that, feebly - thanks.

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 03:11:42 GMT

“(see lib/hc12c/readme.txt)”

Ah, one of the PE beans was giving me a message like “use the compile command ‘-CpuHCS12X’” can’t find that message at the moment though. Am still working on it.

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 05:25:17 GMT

OK, copied in ansibi.lib (no float, banked memory)

Was able to then get it to all compile on my reused S08DZ code.

I was getting close the other way, but it was quicker to start with a new project.

I'll set up the clock settings tomorow and see how the software runs tomorrow.

Thank you,

Re: Linker Message - missing symbol on S12X port

Ironhorse — Wed, 13 Oct 2010 05:36:03 GMT

I've also just changed the compiler instruction " -CpuHCS12" to " -CpuHCS12X"

Re: Linker Message - missing symbol on S12X port

Ironhorse — Tue, 16 Nov 2010 00:11:09 GMT

BTW, adding the ansi##.lib worked,

Thank you.