9.37.3 PRU Machine Relocations

%pmem(expression)

Convert expression from byte-address to a word-address. In other words, shift right by two.

%label(expression)

Mark the given operand as a label. This is useful if you need to jump to a label that matches a register name.

          r1:
              jmp r1		; Will jump to register R1
              jmp %label(r1)	; Will jump to label r1