test_mulhw_1:
  #_ REGISTER_IN r4 1
  #_ REGISTER_IN r5 0
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0
  #_ REGISTER_OUT r4 1
  #_ REGISTER_OUT r5 0

test_mulhw_2:
  #_ REGISTER_IN r4 0x00000000FFFFFFFF
  #_ REGISTER_IN r5 1
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_OUT r4 0x00000000FFFFFFFF
  #_ REGISTER_OUT r5 1

test_mulhw_3:
  #_ REGISTER_IN r4 0x00000001FFFFFFFF
  #_ REGISTER_IN r5 1
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_OUT r4 0x00000001FFFFFFFF
  #_ REGISTER_OUT r5 1

test_mulhw_4:
  #_ REGISTER_IN r4 0x800000007FFFFFFF
  #_ REGISTER_IN r5 1
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0
  #_ REGISTER_OUT r4 0x800000007FFFFFFF
  #_ REGISTER_OUT r5 1

test_mulhw_5:
  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_IN r5 1
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_OUT r5 1

test_mulhw_6:
  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_IN r5 0xFFFFFFFFFFFFFFFF
  mulhw r3, r4, r5
  blr
  #_ REGISTER_OUT r3 0
  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
  #_ REGISTER_OUT r5 0xFFFFFFFFFFFFFFFF