sdcc/support/regression/tests/bug-3532.c

   1 /* bug-3523.c
   2    An issue in handling register arguments of asm functions with __preserves_regs specification.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #pragma disable_warning 85
   8
   9 typedef struct tSpriteStruct {
  10   char dummy;
  11   signed char handle;
  12 } SpriteStruct;
  13
  14 SpriteStruct sprites[2];
  15
  16 #if (defined(__SDCC_z80) || defined(__SDCC_z180) || defined(__SDCC_z80n)) && __SDCCCALL == 1
  17 signed char SMS_addSprite (unsigned int y, unsigned int x_tile) __naked __preserves_regs(d,e,iyh,iyl) __sdcccall(1) {
  18 __asm
  19     ld a,l
  20     ret
  21 __endasm;
  22 }
  23 #elif defined(__SDCC_sm83) && __SDCCCALL == 1
  24 signed char SMS_addSprite (unsigned int y, unsigned int x_tile) __naked __preserves_regs(d,e,iyh,iyl) __sdcccall(1) {
  25 __asm
  26     ld a,e
  27     ret
  28 __endasm;
  29 }
  30 #else
  31 signed char SMS_addSprite (unsigned int y, unsigned int x_tile) {
  32         return y;
  33 }
  34 #endif
  35
  36 void f(void) {
  37   sprites[0].handle = SMS_addSprite(0, 0);
  38   sprites[1].handle = SMS_addSprite(0, 0);
  39 }
  40
  41 void
  42 testBug (void) {
  43         sprites[0].handle = -1;
  44         sprites[1].handle = -1;
  45         f();
  46         ASSERT (sprites[0].handle == 0);
  47         ASSERT (sprites[1].handle == 0);
  48 }
  49