scripts/dtc/treesource.c

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This source file includes following definitions.
dt_from_source
write_prefix
isstring
write_propval_string
write_propval_cells
write_propval_bytes
write_propval
write_tree_source_node
dt_to_source
/*
 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *                                                                   USA
 */

#include "dtc.h"
#include "srcpos.h"

extern FILE *yyin;
extern int yyparse(void);
extern YYLTYPE yylloc;

struct boot_info *the_boot_info;
int treesource_error;

struct boot_info *dt_from_source(const char *fname)
{
        the_boot_info = NULL;
        treesource_error = 0;

        srcfile_push(fname);
        yyin = current_srcfile->f;
        yylloc.file = current_srcfile;

        if (yyparse() != 0)
                die("Unable to parse input tree\n");

        if (treesource_error)
                die("Syntax error parsing input tree\n");

        return the_boot_info;
}

static void write_prefix(FILE *f, int level)
{
        int i;

        for (i = 0; i < level; i++)
                fputc('\t', f);
}

static int isstring(char c)
{
        return (isprint(c)
                || (c == '\0')
                || strchr("\a\b\t\n\v\f\r", c));
}

static void write_propval_string(FILE *f, struct data val)
{
        const char *str = val.val;
        int i;
        struct marker *m = val.markers;

        assert(str[val.len-1] == '\0');

        while (m && (m->offset == 0)) {
                if (m->type == LABEL)
                        fprintf(f, "%s: ", m->ref);
                m = m->next;
        }
        fprintf(f, "\"");

        for (i = 0; i < (val.len-1); i++) {
                char c = str[i];

                switch (c) {
                case '\a':
                        fprintf(f, "\\a");
                        break;
                case '\b':
                        fprintf(f, "\\b");
                        break;
                case '\t':
                        fprintf(f, "\\t");
                        break;
                case '\n':
                        fprintf(f, "\\n");
                        break;
                case '\v':
                        fprintf(f, "\\v");
                        break;
                case '\f':
                        fprintf(f, "\\f");
                        break;
                case '\r':
                        fprintf(f, "\\r");
                        break;
                case '\\':
                        fprintf(f, "\\\\");
                        break;
                case '\"':
                        fprintf(f, "\\\"");
                        break;
                case '\0':
                        fprintf(f, "\", ");
                        while (m && (m->offset < i)) {
                                if (m->type == LABEL) {
                                        assert(m->offset == (i+1));
                                        fprintf(f, "%s: ", m->ref);
                                }
                                m = m->next;
                        }
                        fprintf(f, "\"");
                        break;
                default:
                        if (isprint(c))
                                fprintf(f, "%c", c);
                        else
                                fprintf(f, "\\x%02hhx", c);
                }
        }
        fprintf(f, "\"");

        /* Wrap up any labels at the end of the value */
        for_each_marker_of_type(m, LABEL) {
                assert (m->offset == val.len);
                fprintf(f, " %s:", m->ref);
        }
}

static void write_propval_cells(FILE *f, struct data val)
{
        void *propend = val.val + val.len;
        cell_t *cp = (cell_t *)val.val;
        struct marker *m = val.markers;

        fprintf(f, "<");
        for (;;) {
                while (m && (m->offset <= ((char *)cp - val.val))) {
                        if (m->type == LABEL) {
                                assert(m->offset == ((char *)cp - val.val));
                                fprintf(f, "%s: ", m->ref);
                        }
                        m = m->next;
                }

                fprintf(f, "0x%x", fdt32_to_cpu(*cp++));
                if ((void *)cp >= propend)
                        break;
                fprintf(f, " ");
        }

        /* Wrap up any labels at the end of the value */
        for_each_marker_of_type(m, LABEL) {
                assert (m->offset == val.len);
                fprintf(f, " %s:", m->ref);
        }
        fprintf(f, ">");
}

static void write_propval_bytes(FILE *f, struct data val)
{
        void *propend = val.val + val.len;
        const char *bp = val.val;
        struct marker *m = val.markers;

        fprintf(f, "[");
        for (;;) {
                while (m && (m->offset == (bp-val.val))) {
                        if (m->type == LABEL)
                                fprintf(f, "%s: ", m->ref);
                        m = m->next;
                }

                fprintf(f, "%02hhx", *bp++);
                if ((const void *)bp >= propend)
                        break;
                fprintf(f, " ");
        }

        /* Wrap up any labels at the end of the value */
        for_each_marker_of_type(m, LABEL) {
                assert (m->offset == val.len);
                fprintf(f, " %s:", m->ref);
        }
        fprintf(f, "]");
}

static void write_propval(FILE *f, struct property *prop)
{
        int len = prop->val.len;
        const char *p = prop->val.val;
        struct marker *m = prop->val.markers;
        int nnotstring = 0, nnul = 0;
        int nnotstringlbl = 0, nnotcelllbl = 0;
        int i;

        if (len == 0) {
                fprintf(f, ";\n");
                return;
        }

        for (i = 0; i < len; i++) {
                if (! isstring(p[i]))
                        nnotstring++;
                if (p[i] == '\0')
                        nnul++;
        }

        for_each_marker_of_type(m, LABEL) {
                if ((m->offset > 0) && (prop->val.val[m->offset - 1] != '\0'))
                        nnotstringlbl++;
                if ((m->offset % sizeof(cell_t)) != 0)
                        nnotcelllbl++;
        }

        fprintf(f, " = ");
        if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
            && (nnotstringlbl == 0)) {
                write_propval_string(f, prop->val);
        } else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
                write_propval_cells(f, prop->val);
        } else {
                write_propval_bytes(f, prop->val);
        }

        fprintf(f, ";\n");
}

static void write_tree_source_node(FILE *f, struct node *tree, int level)
{
        struct property *prop;
        struct node *child;
        struct label *l;

        write_prefix(f, level);
        for_each_label(tree->labels, l)
                fprintf(f, "%s: ", l->label);
        if (tree->name && (*tree->name))
                fprintf(f, "%s {\n", tree->name);
        else
                fprintf(f, "/ {\n");

        for_each_property(tree, prop) {
                write_prefix(f, level+1);
                for_each_label(prop->labels, l)
                        fprintf(f, "%s: ", l->label);
                fprintf(f, "%s", prop->name);
                write_propval(f, prop);
        }
        for_each_child(tree, child) {
                fprintf(f, "\n");
                write_tree_source_node(f, child, level+1);
        }
        write_prefix(f, level);
        fprintf(f, "};\n");
}


void dt_to_source(FILE *f, struct boot_info *bi)
{
        struct reserve_info *re;

        fprintf(f, "/dts-v1/;\n\n");

        for (re = bi->reservelist; re; re = re->next) {
                struct label *l;

                for_each_label(re->labels, l)
                        fprintf(f, "%s: ", l->label);
                fprintf(f, "/memreserve/\t0x%016llx 0x%016llx;\n",
                        (unsigned long long)re->re.address,
                        (unsigned long long)re->re.size);
        }

        write_tree_source_node(f, bi->dt, 0);
}
/* [<][>][^][v][top][bottom][index][help] */
root/scripts/dtc/treesource.c

DEFINITIONS
