sim/testsuite/sim/v850/satsub.cgs

   1 # v850 satsub
   2 # mach: all
   3
   4         .include "testutils.inc"
   5
   6 # If the result of the add is "negative", that means we went too
   7 # positive.  The result should be the most positive number.
   8
   9         noflags
  10         seti    0x90000000, r1
  11         seti    0x70000000, r2
  12         satsub  r1, r2
  13
  14         flags   sat + c + v + ns + nz
  15         reg     r2, 0x7fffffff
  16
  17 # Similarly, if the result of the add is "positive", that means we
  18 # went too negative.  The result should be the most negative number.
  19
  20         noflags
  21         seti    0x70000000, r1
  22         seti    0x90000000, r2
  23         satsub  r1, r2
  24
  25         flags   sat + nc + v + s + nz
  26         reg     r2, 0x80000000
  27
  28 # Check that the SAT flag remains set until reset
  29
  30         seti    1, r1
  31         seti    2, r2
  32         satsub  r1,r2
  33
  34         flags   sat + nc + nv + ns + nz
  35         reg     r2, 1
  36
  37         noflags
  38         seti    1, r1
  39         seti    2, r2
  40         satsub  r1,r2
  41
  42         flags   nsat + nc + nv + ns + nz
  43         reg     r2, 1
  44
  45 # Check that results exactly equal to min/max don't saturate
  46
  47         noflags
  48         seti    0x90000000, r1
  49         seti    0x0fffffff, r2
  50         satsub  r1,r2
  51
  52         flags   nsat + c + nv + ns + nz
  53         reg     r2, 0x7fffffff
  54
  55
  56         noflags
  57         seti    0x70000000, r1
  58         seti    0xf0000000, r2
  59         satsub  r1,r2
  60
  61         flags   nsat + nc + nv + s + nz
  62         reg     r2, 0x80000000
  63
  64
  65         pass