22_if1_sfrb_bitfield_0.c [plain text]
typedef struct
{
unsigned char b0:1;
unsigned char b1:1;
unsigned char b2:1;
unsigned char b3:1;
unsigned char b4:1;
unsigned char b5:1;
unsigned char b6:1;
unsigned char b7:1;
} BitField;
#define SFRA (*((volatile BitField*)0x7f14))
unsigned char *pA = (unsigned char *) 0x7f14;
#define SFRB (*((volatile BitField*)0x7f10))
unsigned char *pB = (unsigned char *) 0x7f10;
char *
Do (void)
{
if (SFRA.b0)
{
if (SFRB.b0)
return "Fail";
else
return "Success";
}
else
return "Fail";
}
int
main (void)
{
*pA = 0xcb;
*pB = 0x34;
return Do ()[0] == 'F';
}