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MSP430FR2111: Register Addressing

Michael Dollard
Prodigy 120 points
Part Number: MSP430FR2111

Is it possible in the MSP430(X) to use a block move (instruction, macro or subroutine ) to save/restore register states (i. e. R4-R10) during a context switch? I want to preserve task states across runtime instances guess what I'm really looking for  is a MOVEM (a la 68K/CF ISA_A) instruction or some way to emulate such an instruction. It looks do-able by using the extended PUSHX/POPX in combination with using the SP to do double duty during switches but that would not be preferred.

  • 0
    Prodigy 120 points
    Correction to above post It looks do-able by using the extended PUSHM(X)/POPM(X) in combination with using the SP to do double duty during switches but that would not be preferred.

    Also, my project is "Assembly Only," nonetheless, I want to maintain 'C' compatible stack frames.
  • 0 in reply to Michael Dollard
    TI__Guru**** 211867 points
    MOVEM instructions or similar are not provided for MSP430(X), you will need to create a workaround like the one you've already suggested. You could ask the TI Compiler Forum for further advice.

    Regards,
    Ryan

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