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russm

CCS/IAR vs. gcc EABI compatibility?

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Does anyone know if it's possible to make mspgcc (either 3 or 4) produce objects that follow the same EABI as CCS/IAR do?

 

I'd like to use some existing assembly that has been written for IAR in a GCC project, but it looks like these compilers use different calling conventions. Porting the assembly is possible, but if possible I'd like to avoid that. While translating the source to msp430-as I noticed that IAR passes function arguments starting in r12 and counting up, where gcc is starting in r15 and counting down, and that's the point where I decided that I probably don't want to put too much more effort in before I know whether I need to do a full port or not.

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