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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Extend-your-language/68000-Assembly/extend-your-language.68000 Normal file
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macro if2_EQ_DOT_L 1,2,3,4
;input: 1 = first param (can be any addressing mode compatible with CMP)
; 2 = second param (used for condition 1)
; 3 = third param (used for condition 2)
; 4 = output for comparison results (must be a data register, and can't be 1, 2, or 3. The macro will not enforce this!)
; <backslash>@ represents a macro-local label that is scoped for each instance of that macro in your program
; and doesn't cause "label already defined" conflicts if the macro is used multiple times
MOVEQ #0,\4
CMP.L \2,\1
BEQ \@eqCond1
;condition 1 failed.
CMP.L \3,\1
BEQ \@TwoButNotOne
;both failed
clr.b d0
bra \@done
\@eqCond1:
CMP.L \3,\1
BEQ \@Both
move.b #2,d0
bra \@done
\@Both:
move.b #3,d0
bra \@done
\@TwoButNotOne:
move.b #1,d0
\@done:
endm