source: mainline/uspace/app/pcc/arch/sparc64/order.c@ 8f6bffdd

/*
 * Copyright (c) 2008 David Crawshaw <david@zentus.com>
 * 
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "pass2.h"

/* is it legal to make an OREG or NAME entry which has an
 * offset of off, (from a register of r), if the
 * resulting thing had type t */
int
notoff(TWORD t, int r, CONSZ off, char *cp)
{
        return !SIMM13(off);
}

/*
 * Turn a UMUL-referenced node into OREG.
 */
void
offstar(NODE *p, int shape)
{
        if (x2debug)
                printf("offstar(%p)\n", p);

        if (p->n_op == PLUS || p->n_op == MINUS) {
                if (p->n_right->n_op == ICON && SIMM13(p->n_right->n_lval)) {
                        if (isreg(p->n_left) == 0)
                                (void)geninsn(p->n_left, INAREG);
                        /* Converted in ormake() */
                        return;
                }
        }
        (void)geninsn(p, INAREG);
}

void
myormake(NODE *q)
{
}

int
shumul(NODE *p, int shape)
{
        if (shape & SOREG)
                return SROREG;
        return SRNOPE;
}

int
setbin(NODE *p)
{
        return 0;
}

int
setasg(NODE *p, int cookie)
{
        return 0;
}

int
setuni(NODE *p, int cookie)
{
        return 0;
}

struct rspecial *
nspecial(struct optab *q)
{
        switch (q->op) {
        case STASG: {
                static struct rspecial s[] = {
                        { NEVER, O0 },
                        { NRIGHT, O1 },
                        { NEVER, O2 },
                        { 0 }
                };
                return s;
        }
        }

        comperr("unknown nspecial %d: %s", q - table, q->cstring);
        return 0; /* XXX */
}

int
setorder(NODE *p)
{
        return 0;
}

int *
livecall(NODE *p)
{
        static int ret[] = { O0, O1, O2, O3, O4, O5, O6, O7, -1 };
        return ret;
}

int
acceptable(struct optab *op)
{
        return 1;
}