.include "t-macros.i" start ;; The d10v implements negated addition for subtraction .macro check_sub s x y r c ;; clear carry ldi r6,#0x8004 mvtc r6,cr0 ;; subtract ldi r10,#\x ldi r11,#\y sub r10, r11 ;; verify result ldi r12, #\r cmpeq r10, r12 brf0t 1f ldi r6, 1 ldi r2, #\s trap 15 1: ;; verify carry mvfc r6, cr0 and3 r6, r6, #1 cmpeqi r6, #\c brf0t 1f ldi r6, 1 ldi r2, #\s trap 15 1: .endm check_sub 1 0x0000 0x0000 0x0000 1 check_sub 2 0x0000 0x0001 0xffff 0 check_sub 3 0x0001 0x0000 0x0001 1 check_sub 4 0x0001 0x0001 0x0000 1 check_sub 5 0x0000 0x8000 0x8000 0 check_sub 6 0x8000 0x0001 0x7fff 1 check_sub 7 0x7fff 0x7fff 0x0000 1 exit0