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/** bug-3741.c: A segfault at compile time that only happens on some systems?
*/
#include <testfwk.h>
#define PRN_TILE_WIDTH 20
#if defined(__SDCC_z80) || defined(SDCC_sm83)
#define PR __preserves_regs(b, c, h, l)
#else
#define PR
#define __banked
#endif
void mymemset(void *s, unsigned char c, unsigned int n);
unsigned char * get_xy(unsigned char x, unsigned char y);
unsigned char get_byte(unsigned char * addr) PR;
void vmemcpy(unsigned char *dest, unsigned char *sour, unsigned int len);
unsigned char * _VRAM8000 = (__xdata unsigned char *)0x8000;
unsigned char * _VRAM9000 = (__xdata unsigned char *)0x9000;
unsigned char some_func(unsigned char sx, unsigned char sy, unsigned char sw, unsigned char sh, unsigned char centered) __banked {
unsigned char tile_data[16], rows = ((sh & 0x01) ? (sh + 1) : sh), x_ofs = (centered) ? ((PRN_TILE_WIDTH - sw) >> 1) : 0;
for (unsigned char y = 0; y != rows; y++) {
unsigned char * map_addr = get_xy(sx, y + sy);
for (unsigned char x = 0; x != PRN_TILE_WIDTH; x++) {
if ((x >= x_ofs) && (x < (x_ofs + sw)) && (y < sh)) {
unsigned char tile = get_byte(map_addr++);
unsigned char * source = (((y + sy) > 11) || (tile > 127)) ? _VRAM8000 : _VRAM9000;
vmemcpy(tile_data, source + ((unsigned int)tile << 4), sizeof(tile_data));
}
else mymemset(tile_data, 0x00, sizeof(tile_data));
}
}
return 0x01;
}
void
testBug (void)
{
}
void mymemset(void *s, unsigned char c, unsigned int n)
{
(void)s;
(void)c;
(void)n;
}
unsigned char * get_xy(unsigned char x, unsigned char y)
{
(void)x;
(void)y;
return(0);
}
unsigned char get_byte(unsigned char * addr) PR
{
(void)addr;
return(0);
}
void vmemcpy(unsigned char *dest, unsigned char *sour, unsigned int len)
{
(void)dest;
(void)sour;
(void)len;
}
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