coreboot-kgpe-d16/util/romcc/tests/simple_test24.c

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void smbus_read_byte(void)
{
unsigned char host_status_register;
unsigned char byte;
int result;
host_status_register = __builtin_inb(0x1234);
/* read results of transaction */
byte = __builtin_inb(0x4567);
result = byte;
if (host_status_register != 0x02) {
result = -1;
}
}