sdcc/support/regression/tests/largeoddstruct.c.in

   1 /*  Test large structs of odd size
   2     Some ports use blockmoveinstructions for handling large objects, in particular
   3     for assignment, read and write via pointers, passing as parameters and returning.
   4     Sometimes the code path is sloghtly different for objects of odd size.
   5     width: 8, 40, 56
   6  */
   7
   8 #include <testfwk.h>
   9
  10 #if __SDCC_BITINT_MAXWIDTH >= {width} // TODO: When we can regression-test in --std-c23 mode, use the standard macro from limits.h instead!
  11 struct largeoddstruct
  12 {
  13         unsigned char c0;
  14         unsigned _BitInt({width}) bi;
  15         unsigned char c1;
  16 };
  17
  18
  19 const struct largeoddstruct struct0 = {0xaa, 23, 0x55};
  20 struct largeoddstruct struct1 = {0xa5, 42, 0x5a};
  21
  22 #if !defined (__SDCC_hc08) && !defined (__SDCC_s08) && !defined (__SDCC_ds390) && !defined (__SDCC_mos6502) && !defined (__SDCC_mos65c02) // struct return not yet supported
  23 struct largeoddstruct f0(void)
  24 {
  25         return (struct0);
  26 }
  27
  28 struct largeoddstruct f1(void)
  29 {
  30         return (struct1);
  31 }
  32 #endif
  33 #if 0 // segfault
  34 struct largeoddstruct f2(struct largeoddstruct *p)
  35 {
  36         return (*p);
  37 }
  38 #endif
  39 void f3(struct largeoddstruct *p)
  40 {
  41         struct1 = *p;
  42 }
  43
  44 void compare0(struct largeoddstruct s0)
  45 {
  46         ASSERT(s0.c0 == 0xaa);
  47         ASSERT(s0.bi == 23);
  48         ASSERT(s0.c1 == 0x55);
  49 }
  50
  51 void compare1(struct largeoddstruct s1)
  52 {
  53         ASSERT(s1.c0 == 0xa5);
  54         ASSERT(s1.bi == 42);
  55         ASSERT(s1.c1 == 0x5a);
  56 }
  57 #endif
  58
  59 void testLargeOddStruct (void)
  60 {
  61 #if !(defined(__SDCC_mcs51) && defined(__SDCC_STACK_AUTO)) // Bug #3804
  62 #if __SDCC_BITINT_MAXWIDTH >= {width} // TODO: When we can regression-test in --std-c23 mode, use the standard macro from limits.h instead!
  63 #if !defined (__SDCC_hc08) && !defined (__SDCC_s08) && !defined (__SDCC_ds390) && !defined (__SDCC_mos6502) && !defined (__SDCC_mos65c02) // struct return not yet supported
  64         struct largeoddstruct s;
  65         s = f0();
  66         compare0 (s);
  67
  68         s = f1();
  69         compare1 (s);
  70 #endif
  71 #if 0
  72         s = f2(&struct1);
  73         compare1 (s);
  74 #endif
  75 #ifndef __SDCC_ds390
  76         f3(&struct0);
  77         compare0 (struct1);
  78 #endif
  79 #endif
  80 #endif
  81 }
  82