| # mach: all |
| # output: |
| # sim: --environment operating |
| |
| .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 |
