To help the compiler stay consistent with the C startup code, that code
moved from msp430-libc to the compiler, and lives in a different object
file now. Use msp430-gcc instead of msp430-ld to perform the link step.
Make sure you include the -mmcu argument so the linker uses the right
memory and peripheral data.
I suggest building a simple hello.c program with msp430gcc -v to see the
steps that are performed and the corresponding arguments to the tools if
you need to customize something.
Peter
2012/2/16 Stefan Nürnberger <s...@zelle79.org>
> Hello,
>
> I am currently migrating a project from mspgcc4 to the new mspgcc
> toolchain. I am using the msp430-gcc (GNU GCC patched mspgcc-20110716)
> 4.5.3 from the official debian repositories. I am missing some hints on
> what changed between those versions. Here are my questions:
>
> In our project we are using a custom linker script and we would like to
> keep it this way. But mspgcc will not link the executables out of the
> box. At first I noticed that in our linker script we had explicitly set
> the output architecture with OUTPUT_ARCH(msp:16) or (msp:54) which I
> understand is no longer supported. The linker should take the correct
> information from the -mmcu switch. Is this correct?
>
> And what is more of a problem: The linker won't link the default startup
> code like it did with mspgcc4. We are missing all of the __do_copy_data,
> __do_clear_bss, __do_global_ctors and __jump_to_main. Also the
> _reset_vector__ is not defined. When we define it in the linker script,
> the program will link correctly but without the default startup code.
> What switches are likely to cause this behaviour? Is this expected with
> custom linker scripts? How can we force the default startup code to be
> linked in?
>
> BTW this is a C++ project compiled and linked with msp430-g++.
>
> Thanks
> Stefan
>
> P.S. sorry if this is a double post. It seems the mailing list does not
> like my other mail address.
>
>
>
> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
> _______________________________________________
> Mspgcc-users mailing list
> Mspgcc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/mspgcc-users
>
------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
_______________________________________________
Mspgcc-users mailing list
Mspgcc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mspgcc-users
