/*
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* libfdt - Flat Device Tree manipulation
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* Test labels within values
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* Copyright (C) 2008 David Gibson, IBM Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <libfdt.h>
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#include "tests.h"
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#include "testdata.h"
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struct val_label {
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const char *labelname;
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int propoff;
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};
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static struct val_label labels1[] = {
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{ "start1", 0 },
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{ "mid1", 2 },
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{ "end1", -1 },
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};
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static struct val_label labels2[] = {
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{ "start2", 0 },
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{ "innerstart2", 0 },
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{ "innermid2", 4 },
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{ "innerend2", -1 },
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{ "end2", -1 },
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};
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static struct val_label labels3[] = {
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{ "start3", 0 },
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{ "innerstart3", 0 },
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{ "innermid3", 1 },
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{ "innerend3", -1 },
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{ "end3", -1 },
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};
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static void check_prop_labels(void *sohandle, void *fdt, const char *name,
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const struct val_label* labels, int n)
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{
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const struct fdt_property *prop;
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const char *p;
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int len;
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int i;
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prop = fdt_get_property(fdt, 0, name, &len);
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if (!prop)
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FAIL("Couldn't locate property \"%s\"", name);
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p = dlsym(sohandle, name);
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if (!p)
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FAIL("Couldn't locate label symbol \"%s\"", name);
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if (p != (const char *)prop)
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FAIL("Label \"%s\" does not point to correct property", name);
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for (i = 0; i < n; i++) {
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int off = labels[i].propoff;
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if (off == -1)
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off = len;
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p = dlsym(sohandle, labels[i].labelname);
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if (!p)
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FAIL("Couldn't locate label symbol \"%s\"", name);
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if ((p - prop->data) != off)
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FAIL("Label \"%s\" points to offset %ld instead of %d"
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"in property \"%s\"", labels[i].labelname,
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(long)(p - prop->data), off, name);
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}
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}
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int main(int argc, char *argv[])
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{
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void *sohandle;
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void *fdt;
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int err;
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test_init(argc, argv);
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if (argc != 2)
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CONFIG("Usage: %s <so file>", argv[0]);
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sohandle = dlopen(argv[1], RTLD_NOW);
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if (!sohandle)
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FAIL("Couldn't dlopen() %s", argv[1]);
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fdt = dlsym(sohandle, "dt_blob_start");
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if (!fdt)
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FAIL("Couldn't locate \"dt_blob_start\" symbol in %s",
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argv[1]);
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err = fdt_check_header(fdt);
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if (err != 0)
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FAIL("%s contains invalid tree: %s", argv[1],
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fdt_strerror(err));
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check_prop_labels(sohandle, fdt, "prop1", labels1, ARRAY_SIZE(labels1));
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check_prop_labels(sohandle, fdt, "prop2", labels2, ARRAY_SIZE(labels2));
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check_prop_labels(sohandle, fdt, "prop3", labels3, ARRAY_SIZE(labels3));
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PASS();
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}
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