sim/testsuite/d10v/t-sub.s

   1 # mach: all
   2 # output:
   3 # sim: --environment operating
   4
   5 .include "t-macros.i"
   6
   7         start
   8
   9 ;;  The d10v implements negated addition for subtraction
  10
  11         .macro check_sub s x y r c
  12         ;; clear carry
  13         ldi     r6,#0x8004
  14         mvtc    r6,cr0
  15         ;; subtract
  16         ldi     r10,#\x
  17         ldi     r11,#\y
  18         sub     r10, r11
  19         ;; verify result
  20         ldi     r12, #\r
  21         cmpeq   r10, r12
  22         brf0t   1f
  23         ldi     r6, 1
  24         ldi     r2, #\s
  25         trap    15
  26 1:
  27         ;; verify carry
  28         mvfc    r6, cr0
  29         and3    r6, r6, #1
  30         cmpeqi  r6, #\c
  31         brf0t   1f
  32         ldi     r6, 1
  33         ldi     r2, #\s
  34         trap    15
  35 1:
  36         .endm
  37
  38 check_sub 1 0x0000 0x0000  0x0000  1
  39 check_sub 2 0x0000 0x0001  0xffff  0
  40 check_sub 3 0x0001 0x0000  0x0001  1
  41 check_sub 4 0x0001 0x0001  0x0000  1
  42 check_sub 5 0x0000 0x8000  0x8000  0
  43 check_sub 6 0x8000 0x0001  0x7fff  1
  44 check_sub 7 0x7fff 0x7fff  0x0000  1
  45
  46         exit0