| # mach: all |
| # output: |
| # sim: --environment operating |
| |
| .include "t-macros.i" |
| |
| start |
| |
| ;; The d10v implements negated addition for subtraction |
| |
| .macro check_sub2w s x y r c v |
| |
| ;; clear carry |
| ldi r6,#0x8004 |
| mvtc r6,cr0 |
| |
| ;; load opnds |
| ld2w r6, @(1f,r0) |
| ld2w r8, @(2f,r0) |
| .data |
| 1: .long \x |
| 2: .long \y |
| .text |
| |
| ;; subtract |
| SUB2W r6, r8 |
| |
| ;; verify result |
| ld2w r10, @(1f,r0) |
| .data |
| 1: .long \r |
| .text |
| cmpeq r6, r10 |
| brf0f 2f |
| cmpeq r7, r11 |
| brf0t 3f |
| 2: ldi r4, 1 |
| ldi r0, \s |
| trap 15 |
| 3: |
| |
| ;; verify carry |
| mvfc r6, cr0 |
| and3 r6, r6, #1 |
| cmpeqi r6, #\c |
| brf0t 1f |
| ldi r4, 1 |
| ldi r0, \s |
| trap 15 |
| 1: |
| .endm |
| |
| check_sub2w 1 0x00000000 0x00000000 0x00000000 1 0 |
| check_sub2w 2 0x00000000 0x00000001 0xffffffff 0 0 |
| check_sub2w 3 0x00000001 0x00000000 0x00000001 1 0 |
| check_sub2w 3 0x00000001 0x00000001 0x00000000 1 0 |
| check_sub2w 5 0x00000000 0x80000000 0x80000000 0 1 |
| check_sub2w 6 0x80000000 0x00000001 0x7fffffff 1 1 |
| check_sub2w 7 0x7fffffff 0x7fffffff 0x00000000 1 0 |
| |
| exit0 |
