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How to use the .mptr directive?

Clemens Eisserer
Expert 2430 points

Hi,

Sorry for asking such a beginner's question, what are the two arguments the .mptr directive takes?

All TI documentation I've look at took a lot of text explaining what mptr is good for, however, not how it is used ;)

Thank you in advance, Clemens

  • 0
    TI__Expert 8055 points

    Clemens,

    The following is directly from the C Compiler User's Guide.  

    _blkcp: .cproc I
    	.reg ptr1, ptr2, tmp1, tmp2

    	MVK 0x0, ptr1 ; ptr1 = address 0
    	MVK 0x8, ptr2 ; ptr2 = address 8

    loop: .trip 50

    	.mptr ptr1, a+0, 4
    	.mptr foo,  a+8, 4	
    							 ; potential conflict
    	LDW *ptr1++, tmp1 			; load *0, bank 0
    	STW tmp1, *ptr2++{foo} 	 ; store *8, bank 0

    	[I] ADD -1,i,i 					; I--
    	[I] B loop 					; if (!0) goto loop

    .endproc

    Hope this helps,

    Dan