1 files changed, 321 insertions, 0 deletions

diff --git a/scripts/dtc/data.c b/scripts/dtc/data.c
new file mode 100644
index 000000000000..dd2e3d39d4c1
--- /dev/null
+++ b/scripts/dtc/data.c
@@ -0,0 +1,321 @@
+/*
+ * (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"
+
+void data_free(struct data d)
+{
+        struct marker *m, *nm;
+
+        m = d.markers;
+        while (m) {
+                nm = m->next;
+                free(m->ref);
+                free(m);
+                m = nm;
+        }
+
+        if (d.val)
+                free(d.val);
+}
+
+struct data data_grow_for(struct data d, int xlen)
+{
+        struct data nd;
+        int newsize;
+
+        if (xlen == 0)
+                return d;
+
+        nd = d;
+
+        newsize = xlen;
+
+        while ((d.len + xlen) > newsize)
+                newsize *= 2;
+
+        nd.val = xrealloc(d.val, newsize);
+
+        return nd;
+}
+
+struct data data_copy_mem(const char *mem, int len)
+{
+        struct data d;
+
+        d = data_grow_for(empty_data, len);
+
+        d.len = len;
+        memcpy(d.val, mem, len);
+
+        return d;
+}
+
+static char get_oct_char(const char *s, int *i)
+{
+        char x[4];
+        char *endx;
+        long val;
+
+        x[3] = '\0';
+        strncpy(x, s + *i, 3);
+
+        val = strtol(x, &endx, 8);
+
+        assert(endx > x);
+
+        (*i) += endx - x;
+        return val;
+}
+
+static char get_hex_char(const char *s, int *i)
+{
+        char x[3];
+        char *endx;
+        long val;
+
+        x[2] = '\0';
+        strncpy(x, s + *i, 2);
+
+        val = strtol(x, &endx, 16);
+        if (!(endx  > x))
+                die("\\x used with no following hex digits\n");
+
+        (*i) += endx - x;
+        return val;
+}
+
+struct data data_copy_escape_string(const char *s, int len)
+{
+        int i = 0;
+        struct data d;
+        char *q;
+
+        d = data_grow_for(empty_data, strlen(s)+1);
+
+        q = d.val;
+        while (i < len) {
+                char c = s[i++];
+
+                if (c != '\\') {
+                        q[d.len++] = c;
+                        continue;
+                }
+
+                c = s[i++];
+                assert(c);
+                switch (c) {
+                case 'a':
+                        q[d.len++] = '\a';
+                        break;
+                case 'b':
+                        q[d.len++] = '\b';
+                        break;
+                case 't':
+                        q[d.len++] = '\t';
+                        break;
+                case 'n':
+                        q[d.len++] = '\n';
+                        break;
+                case 'v':
+                        q[d.len++] = '\v';
+                        break;
+                case 'f':
+                        q[d.len++] = '\f';
+                        break;
+                case 'r':
+                        q[d.len++] = '\r';
+                        break;
+                case '0':
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                        i--; /* need to re-read the first digit as
+                              * part of the octal value */
+                        q[d.len++] = get_oct_char(s, &i);
+                        break;
+                case 'x':
+                        q[d.len++] = get_hex_char(s, &i);
+                        break;
+                default:
+                        q[d.len++] = c;
+                }
+        }
+
+        q[d.len++] = '\0';
+        return d;
+}
+
+struct data data_copy_file(FILE *f, size_t maxlen)
+{
+        struct data d = empty_data;
+
+        while (!feof(f) && (d.len < maxlen)) {
+                size_t chunksize, ret;
+
+                if (maxlen == -1)
+                        chunksize = 4096;
+                else
+                        chunksize = maxlen - d.len;
+
+                d = data_grow_for(d, chunksize);
+                ret = fread(d.val + d.len, 1, chunksize, f);
+
+                if (ferror(f))
+                        die("Error reading file into data: %s", strerror(errno));
+
+                if (d.len + ret < d.len)
+                        die("Overflow reading file into data\n");
+
+                d.len += ret;
+        }
+
+        return d;
+}
+
+struct data data_append_data(struct data d, const void *p, int len)
+{
+        d = data_grow_for(d, len);
+        memcpy(d.val + d.len, p, len);
+        d.len += len;
+        return d;
+}
+
+struct data data_insert_at_marker(struct data d, struct marker *m,
+                                  const void *p, int len)
+{
+        d = data_grow_for(d, len);
+        memmove(d.val + m->offset + len, d.val + m->offset, d.len - m->offset);
+        memcpy(d.val + m->offset, p, len);
+        d.len += len;
+
+        /* Adjust all markers after the one we're inserting at */
+        m = m->next;
+        for_each_marker(m)
+                m->offset += len;
+        return d;
+}
+
+struct data data_append_markers(struct data d, struct marker *m)
+{
+        struct marker **mp = &d.markers;
+
+        /* Find the end of the markerlist */
+        while (*mp)
+                mp = &((*mp)->next);
+        *mp = m;
+        return d;
+}
+
+struct data data_merge(struct data d1, struct data d2)
+{
+        struct data d;
+        struct marker *m2 = d2.markers;
+
+        d = data_append_markers(data_append_data(d1, d2.val, d2.len), m2);
+
+        /* Adjust for the length of d1 */
+        for_each_marker(m2)
+                m2->offset += d1.len;
+
+        d2.markers = NULL; /* So data_free() doesn't clobber them */
+        data_free(d2);
+
+        return d;
+}
+
+struct data data_append_cell(struct data d, cell_t word)
+{
+        cell_t beword = cpu_to_fdt32(word);
+
+        return data_append_data(d, &beword, sizeof(beword));
+}
+
+struct data data_append_re(struct data d, const struct fdt_reserve_entry *re)
+{
+        struct fdt_reserve_entry bere;
+
+        bere.address = cpu_to_fdt64(re->address);
+        bere.size = cpu_to_fdt64(re->size);
+
+        return data_append_data(d, &bere, sizeof(bere));
+}
+
+struct data data_append_addr(struct data d, uint64_t addr)
+{
+        uint64_t beaddr = cpu_to_fdt64(addr);
+
+        return data_append_data(d, &beaddr, sizeof(beaddr));
+}
+
+struct data data_append_byte(struct data d, uint8_t byte)
+{
+        return data_append_data(d, &byte, 1);
+}
+
+struct data data_append_zeroes(struct data d, int len)
+{
+        d = data_grow_for(d, len);
+
+        memset(d.val + d.len, 0, len);
+        d.len += len;
+        return d;
+}
+
+struct data data_append_align(struct data d, int align)
+{
+        int newlen = ALIGN(d.len, align);
+        return data_append_zeroes(d, newlen - d.len);
+}
+
+struct data data_add_marker(struct data d, enum markertype type, char *ref)
+{
+        struct marker *m;
+
+        m = xmalloc(sizeof(*m));
+        m->offset = d.len;
+        m->type = type;
+        m->ref = ref;
+        m->next = NULL;
+
+        return data_append_markers(d, m);
+}
+
+int data_is_one_string(struct data d)
+{
+        int i;
+        int len = d.len;
+
+        if (len == 0)
+                return 0;
+
+        for (i = 0; i < len-1; i++)
+                if (d.val[i] == '\0')
+                        return 0;
+
+        if (d.val[len-1] != '\0')
+                return 0;
+
+        return 1;
+}