sdcc/support/regression/tests/bug-3165.c

   1 /*
   2    bug-3165.c
   3    a crash in z80 code generation on __sfr right subtraction operand.
   4  */
   5
   6 #include <testfwk.h>
   7
   8 #if !defined(PORT_HOST) && !defined(__SDCC_stm8) && !defined(__SDCC_hc08) && !defined(__SDCC_s08) && !defined(__SDCC_mos6502) && !defined(__SDCC_mos65c02) && !defined(__SDCC_tlcs90) && !defined(__SDCC_f8)
   9
  10 unsigned char effect_y_line;
  11 #if defined(__SDCC_sm83)
  12 volatile __sfr __at(0xff02) reg_SCY;
  13 volatile __sfr __at(0xff04) reg_LY;
  14 #elif defined(__SDCC_mcs51) || defined(__SDCC_ds390)
  15 volatile __sfr __at(0x82) reg_SCY;
  16 volatile __sfr __at(0x84) reg_LY;
  17 #else
  18 volatile __sfr __at(0x02) reg_SCY;
  19 volatile __sfr __at(0x04) reg_LY;
  20 #endif
  21
  22 void f(void) {
  23     effect_y_line = 10;
  24     reg_SCY = effect_y_line - reg_LY;
  25 }
  26 #endif
  27
  28 void
  29 testBug(void)
  30 {
  31 }
  32