Subversion Repositories planix.SVN

static void
forcele(void)
{
#ifdef BIGENDCHECK
        union {
                ulong   ul;
                uchar   uc[sizeof(ulong)];
        } u;

        u.ul = 0;
        coherence();
        u.uc[0] = 1;
        coherence();
        if (u.ul == 1)
                return;

        emerge('?');
        emerge('e');
        if ((u.ul & MASK(8)) == 0) {
                emerge('B');
                panic("rdbaseticks: cpu%d is big-endian", m->machno);
        } else {
                emerge('W');
                panic("rdbaseticks: cpu%d is whacked-endian", m->machno);
        }
#endif
}

void
ckbigendian(char *state)
{
        int wrong;

        wrong = 0;
        if (getpsr() & PsrBigend) {
                setendlittle();
                wrong++;
                wave('?');
                wave('e');
                wave('p');
                if (state == nil)
                        state = "running";
                iprint("cpu%d: %s in big-endian mode\n", m->machno, state);
        }
        if (controlget() & CpCee) {
                wrong++;
                wave('?');
                wave('e');
                wave('e');
                if (state == nil)
                        state = "running";
                iprint("cpu%d: %s with big-endian exceptions\n", m->machno, state);
        }
        if (wrong) {
                dumpstack();
                delay(3000);
                panic("cpu%d: big-endian", m->machno);
        }
}