usr/src/usr.sbin/config.new/mkioconf.c

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Lawrence Berkeley Laboratories.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)mkioconf.c  8.1 (Berkeley) 6/6/93
 */

#include <sys/param.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"

/*
 * Make ioconf.c.
 */
static int cforder __P((const void *, const void *));
static int emitcfdata __P((FILE *));
static int emitexterns __P((FILE *));
static int emithdr __P((FILE *));
static int emitloc __P((FILE *));
static int emitpseudo __P((FILE *));
static int emitpv __P((FILE *));
static int emitroots __P((FILE *));
static int emitvec __P((FILE *));
static char *vecname __P((char *, const char *, int));

static const char *s_i386;

#define SEP(pos, max)   (((u_int)(pos) % (max)) == 0 ? "\n\t" : " ")

/*
 * NEWLINE can only be used in the emitXXX functions.
 * In most cases it can be subsumed into an fprintf.
 */
#define NEWLINE         if (putc('\n', fp) < 0) return (1)

int
mkioconf()
{
        register FILE *fp;
        register char *fname;
        int v;

        s_i386 = intern("i386");

        fname = path("ioconf.c");
        qsort(packed, npacked, sizeof *packed, cforder);
        if ((fp = fopen(fname, "w")) == NULL) {
                (void)fprintf(stderr, "config: cannot write %s: %s\n",
                    fname, strerror(errno));
                return (1);
        }
        v = emithdr(fp);
        if (v != 0 || emitvec(fp) || emitexterns(fp) || emitloc(fp) ||
            emitpv(fp) || emitcfdata(fp) || emitroots(fp) || emitpseudo(fp)) {
                if (v >= 0)
                        (void)fprintf(stderr,
                            "config: error writing %s: %s\n",
                            fname, strerror(errno));
                (void)fclose(fp);
                /* (void)unlink(fname); */
                free(fname);
                return (1);
        }
        (void)fclose(fp);
        free(fname);
        return (0);
}

static int
cforder(a, b)
        const void *a, *b;
{
        register int n1, n2;

        n1 = (*(struct devi **)a)->i_cfindex;
        n2 = (*(struct devi **)b)->i_cfindex;
        return (n1 - n2);
}

static int
emithdr(ofp)
        register FILE *ofp;
{
        register FILE *ifp;
        register int n;
        char ifn[200], buf[BUFSIZ];

        if (fprintf(ofp, "\
/*\n\
 * MACHINE GENERATED: DO NOT EDIT\n\
 *\n\
 * ioconf.c, from \"%s\"\n\
 */\n\n", conffile) < 0)
                return (1);
        (void)sprintf(ifn, "ioconf.incl.%s", machine);
        if ((ifp = fopen(ifn, "r")) != NULL) {
                while ((n = fread(buf, 1, sizeof(buf), ifp)) > 0)
                        if (fwrite(buf, 1, n, ofp) != n)
                                return (1);
                if (ferror(ifp)) {
                        (void)fprintf(stderr, "config: error reading %s: %s\n",
                            ifn, strerror(errno));
                        (void)fclose(ifp);
                        return (-1);
                }
                (void)fclose(ifp);
        } else {
                if (fputs("\
#include <sys/param.h>\n\
#include <sys/device.h>\n", ofp) < 0)
                        return (1);
        }
        return (0);
}

static int
emitexterns(fp)
        register FILE *fp;
{
        register struct devbase *d;

        NEWLINE;
        for (d = allbases; d != NULL; d = d->d_next) {
                if (d->d_ihead == NULL)
                        continue;
                if (fprintf(fp, "extern struct cfdriver %scd;\n",
                            d->d_name) < 0)
                        return (1);
        }
        NEWLINE;
        return (0);
}

static int
emitloc(fp)
        register FILE *fp;
{
        register int i;

        if (fprintf(fp, "\n/* locators */\n\
static int loc[%d] = {", locators.used) < 0)
                return (1);
        for (i = 0; i < locators.used; i++)
                if (fprintf(fp, "%s%s,", SEP(i, 8), locators.vec[i]) < 0)
                        return (1);
        return (fprintf(fp, "\n};\n") < 0);
}

/*
 * Emit global parents-vector.
 */
static int
emitpv(fp)
        register FILE *fp;
{
        register int i;

        if (fprintf(fp, "\n/* parent vectors */\n\
static short pv[%d] = {", parents.used) < 0)
                return (1);
        for (i = 0; i < parents.used; i++)
                if (fprintf(fp, "%s%d,", SEP(i, 16), parents.vec[i]) < 0)
                        return (1);
        return (fprintf(fp, "\n};\n") < 0);
}

/*
 * Emit the cfdata array.
 */
static int
emitcfdata(fp)
        register FILE *fp;
{
        register struct devi **p, *i, **par;
        register int unit, v;
        register const char *vs, *state, *basename;
        register struct nvlist *nv;
        register struct attr *a;
        char *loc;
        char locbuf[20];

        if (fprintf(fp, "\n\
#define NORM FSTATE_NOTFOUND\n\
#define STAR FSTATE_STAR\n\
\n\
struct cfdata cfdata[] = {\n\
\t/* driver     unit state    loc     flags parents ivstubs */\n") < 0)
                return (1);
        for (p = packed; (i = *p) != NULL; p++) {
                /* the description */
                if (fprintf(fp, "/*%3d: %s at ", i->i_cfindex, i->i_name) < 0)
                        return (1);
                par = i->i_parents;
                for (v = 0; v < i->i_pvlen; v++)
                        if (fprintf(fp, "%s%s", v == 0 ? "" : "|",
                            i->i_parents[v]->i_name) < 0)
                                return (1);
                if (v == 0 && fputs("root", fp) < 0)
                        return (1);
                a = i->i_atattr;
                nv = a->a_locs;
                for (nv = a->a_locs, v = 0; nv != NULL; nv = nv->nv_next, v++)
                        if (fprintf(fp, " %s %s",
                            nv->nv_name, i->i_locs[v]) < 0)
                                return (1);
                if (fputs(" */\n", fp) < 0)
                        return (-1);

                /* then the actual defining line */
                basename = i->i_base->d_name;
                if (i->i_unit == STAR) {
                        unit = i->i_base->d_umax;
                        state = "STAR";
                } else {
                        unit = i->i_unit;
                        state = "NORM";
                }
                if (i->i_ivoff < 0) {
                        vs = "";
                        v = 0;
                } else {
                        vs = "vec+";
                        v = i->i_ivoff;
                }
                if (i->i_locoff >= 0) {
                        (void)sprintf(locbuf, "loc+%3d", i->i_locoff);
                        loc = locbuf;
                } else
                        loc = "loc";
                if (fprintf(fp, "\
\t{&%scd,%s%2d, %s, %7s, %#6x, pv+%2d, %s%d},\n",
                    basename, strlen(basename) < 3 ? "\t\t" : "\t", unit,
                    state, loc, i->i_cfflags, i->i_pvoff, vs, v) < 0)
                        return (1);
        }
        return (fputs("\t{0}\n};\n", fp) < 0);
}

/*
 * Emit the table of potential roots.
 */
static int
emitroots(fp)
        register FILE *fp;
{
        register struct devi **p, *i;

        if (fputs("\nshort cfroots[] = {\n", fp) < 0)
                return (1);
        for (p = packed; (i = *p) != NULL; p++) {
                if (i->i_at != NULL)
                        continue;
                if (i->i_unit != 0 &&
                    (i->i_unit != STAR || i->i_base->d_umax != 0))
                        (void)fprintf(stderr,
                            "config: warning: `%s at root' is not unit 0\n",
                            i->i_name);
                if (fprintf(fp, "\t%2d /* %s */,\n",
                    i->i_cfindex, i->i_name) < 0)
                        return (1);
        }
        return (fputs("\t-1\n};\n", fp) < 0);
}

/*
 * Emit pseudo-device initialization.
 */
static int
emitpseudo(fp)
        register FILE *fp;
{
        register struct devi *i;
        register struct devbase *d;

        if (fputs("\n/* pseudo-devices */\n", fp) < 0)
                return (1);
        for (i = allpseudo; i != NULL; i = i->i_next)
                if (fprintf(fp, "extern void %sattach __P((int));\n",
                    i->i_base->d_name) < 0)
                        return (1);
        if (fputs("\nstruct pdevinit pdevinit[] = {\n", fp) < 0)
                return (1);
        for (i = allpseudo; i != NULL; i = i->i_next) {
                d = i->i_base;
                if (fprintf(fp, "\t{ %sattach, %d },\n",
                    d->d_name, d->d_umax) < 0)
                        return (1);
        }
        return (fputs("\t{ 0, 0 }\n};\n", fp) < 0);
}

/*
 * Emit interrupt vector declarations, and calculate offsets.
 */
static int
emitvec(fp)
        register FILE *fp;
{
        register struct nvlist *head, *nv;
        register struct devi **p, *i;
        register int j, nvec, unit;
        char buf[200];

        nvec = 0;
        for (p = packed; (i = *p) != NULL; p++) {
                if ((head = i->i_base->d_vectors) == NULL)
                        continue;
                if ((unit = i->i_unit) == STAR)
                        panic("emitvec unit==STAR");
                if (nvec == 0)
                        NEWLINE;
                for (j = 0, nv = head; nv != NULL; j++, nv = nv->nv_next)
                        if (fprintf(fp,
                            "/* IVEC %s %d */ extern void %s();\n",
                            nv->nv_name, unit,
                            vecname(buf, nv->nv_name, unit)) < 0)
                                return (1);
                nvec += j + 1;
        }
        if (nvec == 0)
                return (0);
        if (fprintf(fp, "\nstatic void (*vec[%d]) __P((void)) = {", nvec) < 0)
                return (1);
        nvec = 0;
        for (p = packed; (i = *p) != NULL; p++) {
                if ((head = i->i_base->d_vectors) == NULL)
                        continue;
                i->i_ivoff = nvec;
                unit = i->i_unit;
                for (nv = head; nv != NULL; nv = nv->nv_next)
                        if (fprintf(fp, "%s%s,",
                            SEP(nvec++, 4),
                            vecname(buf, nv->nv_name, unit)) < 0)
                                return (1);
                if (fprintf(fp, "%s0,", SEP(nvec++, 4)) < 0)
                        return (1);
        }
        return (fputs("\n};\n", fp) < 0);
}

static char *
vecname(buf, name, unit)
        char *buf;
        const char *name;
        int unit;
{

        /* @#%* 386 uses a different name format */
        if (machine == s_i386) {
                (void)sprintf(buf, "V%s%d", name, unit);
                return (buf);
        }
        (void)sprintf(buf, "X%s%d", name, unit);
        return (buf);
}