Re: Re: New User - Help!

I do not have the diab compiler but I use the Crosscode compiler daily 
which I believe to be the predecessor. The linker uses a linker command 
file that has one or more c-like structures that specify the memory 
layout. for my compiler, the linker command file has a suffix of .spc. 
Inside, there should be statements that start with region=. obviously, 
there is not one named ctors or dtors. find a good spot and insert
	region {} ctors;
	region {} dtors;

This might get you a bit further.

Mike

spw_lotus wrote:

> Hi Eric
> 
> Once again thanks for your input.
> 
> You are correct about the Axiom board. I have uploaded a sample 
> application into the RAM and run it using the monitor program. I now 
> want to compile the sample program supplied and this is where my 
> problems start.
> 
> The Axiom support CD supplies a simple 'hello world' application that 
> it states was compilied with the Diab compiler....however when I try 
> to compile the application as supplied I get error messages as below:
> 
> ------------------------------------------------------------------
> C:\diab\5.2.1.0\src\hello>hello_r
> 
> C:\diab\5.2.1.0\src\hello>dcc -tPPC555EN:simple serial.c hello.c -o 
> hello_r.elf
> -g -XO -Wmhello_r.dld -m2  1>hello_r.map
> dld: warning: Don't know where to allocate input section:
> dld:   no matching input specification found in linker command file.
> dld:   Section name: .ctors
> dld:   File: ctordtor.o(C:\Diab\5.2.1.0\PPCE\libimpl.a)
> dld: Unable to link without .ctors or .dtors section allocation
> 
> C:\diab\5.2.1.0\src\hello>ddump -R -v -o hello_r.s19 hello_r.elf
> ddump: warning Can't open file hello_r.elf: No error
> ddump: warning
> hello_r.elf : Unrecognized file type.  Neither COFF nor ELF
> ------------------------------------------------------------------
> 
> It is obviously down to some linker issue. I emailed Axiom but still 
> have received no response. Let's hope they reply soon!
> 
> Best regards
> 
> Steve Wiggins
> 
> --- In [email protected], "Eric" <Elsbon25@u...> wrote:
> 
>>
>>Ok, so the PB-0555 is a somewhat limited board, in that it does not
>>have any externel flash or ram on it.  This means you have to use 
> 
> the
> 
>>resources on-chip.
>>
>>I'm not sure about Diab, as I never really used it much.  As for
>>CodeWarrior, it looks like you might be able to use that to access 
> 
> the
> 
>>internal flash (writing and running out of internal flash seems to 
> 
> be
> 
>>pretty much your only option for how to run a program).  The flash
>>programmer does appear to have settings that might work with that
>>board.  (Using CodeWarrior requires a Wiggler to plug into the BDM
>>port on the board - do you have this?)
>>
>>I seem to recall that the Axiom boot monitor (assuming this board 
> 
> has
> 
>>one in EEPROM like the CME-555) allows you to transfer an s19 file
>>into internal flash.  I've found that utility to be useful in the
>>past.  It might be easier for you (less to configure) than
>>CodeWarrior, but it will certainly be much slower, if I recall 
> 
> correctly.
> 
>>As for making a program that you can load into internal flash, um, 
> 
> I'm
> 
>>at a bit of a loss.  Doesn't Axiom give you a few sample programs? 
>>I'd try loading those into internal flash using Axiom's utility, and
>>seeing what happens.  They should have some documentation on their 
> 
> CD
> 
>>(or presumably website).
>>
>>Hope that helps,
>>
>>-Eric
>>
>>
>>--- In [email protected], "spw_lotus" <swiggins@l...> wrote:
>>
>>>Hi Eric
>>>
>>>Thanks for your reply.
>>>
>>>Answers to your questions.
>>>
>>>1. I have the Axiom PB-0555 board
>>>2. I have downloaded the WindRiver (Diab) and CodeWarrior 
> 
> Compilers
> 
>>>The board came with an example 'hello world' C program that 
> 
> states it 
> 
>>>was compiled with the Diab compiler....however when I try to 
> 
> complie 
> 
>>>the example I get a linker error referencing the crt0.o file. I 
> 
> have 
> 
>>>contacted Axiom and await a response.
>>>
>>>Hope this info helps!
>>>
>>>Many thanks again for your response
>>>
>>>Best regards
>>>
>>>Steve Wiggins
>>>
>>>
>>>--- In [email protected], "Eric" <Elsbon25@u...> wrote:
>>>
>>>>Hi Steve,
>>>>
>>>>Yes, generally this stuff takes some time to get up to speed.  
> 
> My
> 
>>>>experience is with an open-source RTOS that is probably 
> 
> overkill for
> 
>>>>what you want. 
>>>>
>>>>In order to suggest something, how about a little more 
> 
> information:
> 
>>>>1) What specific board do you have? 
>>>>2) What software do you have at the moment?  Just CodeWarrior?
>>>>
>>>>Did your board come with any documentation?  Generally they have
>>>>examples to work from.
>>>>
>>>>-Eric
>>>>
>>>>--- In [email protected], "spw_lotus" <swiggins@l...> 
> 
> wrote:
> 
>>>>>Hi All
>>>>>
>>>>>I am new to powerpc programming and I am currently struggling 
> 
> to
> 
>>>>get 
>>>>
>>>>>any code running on my MPC555 processor.
>>>>>
>>>>>Would I would ideally like is an IDIOTS guide (ideally with 
>>>>>examples/source) on how to get started.
>>>>>
>>>>>I have sample board with a MPC555 processor, it is preloaded 
> 
> with 
> 
>>>a 
>>>
>>>>>monitor utility that enables me to upload an s19 hex file to 
> 
> RAM
> 
>>>>and 
>>>>
>>>>>then execute it. So I would ideally like to create such a 
> 
> file.
> 
>>>>>Firstly what are the best tools to use...I have never used
>>>>
>>>>Unix/Linux 
>>>>
>>>>>so these options would require a long learning curve. I have 
>>>>>downloaded the CodeWarrior package (Ver 8.1) but it is very
>>>>
>>>>confusing.
>>>>
>>>>>All I want to do at present is generate the simplest possible 
>>>>>program, maybe something that toggles a port pin or writes to 
> 
> a 
> 
>>>>>register, to confirm I can generate something that works. If 
> 
> this
> 
>>>>is 
>>>>
>>>>>done with a 'C' compiler then it would be nice to see a final 
>>>>>assembly listing of the output so that I can see what is 
> 
> going on.
> 
>>>>>I apologise for my ignorance in this subject matter.
>>>>>
>>>>>I have come from an 8051 microcontroller background and have
>>>>
>>>>written 
>>>>
>>>>>in both assembler and 'C' for this processor (using Keil 
> 
> Tools) 
> 
>>>and 
>>>
>>>>>everything was pretty straightforward. I got a Keil 
> 
> evaluation 
> 
>>>and 
>>>
>>>>>had a 'C' program up and running in a matter of hours on my 
>>>
>>>target 
>>>
>>>>>microcontroller.
>>>>>
>>>>>For the MPC555 I have already spent days looking for a 
> 
> compiler 
> 
>>>or 
>>>
>>>>>assembler with some basic examples I can use for my 
> 
> evaluation of 
> 
>>>>>this processor and I still don't have any code produced.
>>>>>
>>>>>Any help/advice from you experts to get this idiot up and 
> 
> running 
> 
>>>>>would be gratefully appreciated.
>>>>>
>>>>>Many thanks for taking the time to read to this point!
>>>>>
>>>>>Best regards
>>>>>Steve Wiggins
> 
> 
> 
> 
> 
> 
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