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Forum: ARM programming with GCC/GNU tools Thumb mode error


Author: Pavel Yermolenko (Company: EPFL) (pavel_47)
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Hello

Trying to build project I get the messages like this: (also please see 
the picture):

=== Build: Debug in udp_multicast (compiler: GNU GCC Compiler for ARM) 
===
C:\Users\Pavel\AppData\Local\Temp\ccs3i4N5.s|575|Error: selected 
processor does not support Thumb mode `it lt'
C:\Users\Pavel\AppData\Local\Temp\ccs3i4N5.s|576|Error: Thumb does not 
support conditional execution
C:\Users\Pavel\AppData\Local\Temp\ccs3i4N5.s|583|Error: unshifted 
register required -- `orr r2,r2,#196608'|
=== Build failed: 3 error(s), 0 warning(s) (0 minute(s), 0 second(s)) 
===


Thanks for any suggestion.

BR

Pavel

Author: hellhammer (Guest)
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Can you show the code where the error occurs?
Which processor do you use?

Author: Pavel Yermolenko (Company: EPFL) (pavel_47)
Posted on:

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Hello Hellhammer

The problem is that compiler doesn't point to the source. According to 
the error messages, the "guilty" is a some file ccs3i4N5.s (that doesn't 
exist when I try to find it in the specified location).

The target processor is CC2538: ARM Cortex™ M3 With Code Prefetch.
I'm not sure that it's properly specified: the source code I get from 
3rd party company, which doesn't provide support.

Is it important to specify exact type of CPU.

Before I worked with another project (but with the same CPU) and it was 
OK.

BR

Pavel

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