diff options
Diffstat (limited to 'sim/testsuite/d10v-elf/t-sub2w.s')
| -rw-r--r-- | sim/testsuite/d10v-elf/t-sub2w.s | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sim/testsuite/d10v-elf/t-sub2w.s b/sim/testsuite/d10v-elf/t-sub2w.s new file mode 100644 index 0000000..9f1bbb7 --- /dev/null +++ b/sim/testsuite/d10v-elf/t-sub2w.s @@ -0,0 +1,57 @@ +.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 |