sdcc/support/regression/tests/bug1535242.c

   1 /* saving "bits" test for mcs51/stack-auto.
   2  */
   3 #include <testfwk.h>
   4
   5 #if defined(__SDCC_mcs51)
   6 #include <8052.h>
   7 #include <stdbool.h>
   8
   9 bool
  10 manipulate_bits (bool x) __using (2)
  11 {
  12   return x;
  13 }
  14
  15 bool
  16 complement (bool x)
  17 {
  18   return !x;
  19 }
  20 #endif
  21
  22 void
  23 testSaveBits (void)
  24 {
  25 #if defined(__SDCC_mcs51)
  26   //enable the interrupt and set it
  27   ET2 = 1;
  28   EA = 1;
  29   TF2 = 1;
  30
  31   //this will pass b0 cleared, test whether it will arrive cleared
  32   if (complement(false))
  33     {
  34       EA = 0;
  35       ASSERT (1);
  36     }
  37   else
  38     {
  39       EA = 0;
  40       ASSERT (0);
  41     }
  42 #else
  43   ASSERT (1);
  44 #endif
  45 }
  46
  47 #if defined(__SDCC_mcs51)
  48 void
  49 T2_isr (void) __interrupt (5) __using (2)
  50 {
  51   //do not clear flag ET2 so it keeps interrupting !
  52
  53   //this will set b0
  54   manipulate_bits (true);
  55 }
  56 #endif
  57