/* $NetBSD: value-labels.c,v 1.1.1.3 2019/12/22 12:34:06 skrll Exp $ */ // SPDX-License-Identifier: LGPL-2.1-or-later /* * libfdt - Flat Device Tree manipulation * Test labels within values * Copyright (C) 2008 David Gibson, IBM Corporation. */ #include #include #include #include #include #include #include #include "tests.h" #include "testdata.h" struct val_label { const char *labelname; int propoff; }; static struct val_label labels1[] = { { "start1", 0 }, { "mid1", 2 }, { "end1", -1 }, }; static struct val_label labels2[] = { { "start2", 0 }, { "innerstart2", 0 }, { "innermid2", 4 }, { "innerend2", -1 }, { "end2", -1 }, }; static struct val_label labels3[] = { { "start3", 0 }, { "innerstart3", 0 }, { "innermid3", 1 }, { "innerend3", -1 }, { "end3", -1 }, }; static void check_prop_labels(void *sohandle, void *fdt, const char *name, const struct val_label* labels, int n) { const struct fdt_property *prop; const char *p; int len; int i; prop = fdt_get_property(fdt, 0, name, &len); if (!prop) FAIL("Couldn't locate property \"%s\"", name); p = dlsym(sohandle, name); if (!p) FAIL("Couldn't locate label symbol \"%s\"", name); if (p != (const char *)prop) FAIL("Label \"%s\" does not point to correct property", name); for (i = 0; i < n; i++) { int off = labels[i].propoff; if (off == -1) off = len; p = dlsym(sohandle, labels[i].labelname); if (!p) FAIL("Couldn't locate label symbol \"%s\"", name); if ((p - prop->data) != off) FAIL("Label \"%s\" points to offset %ld instead of %d" "in property \"%s\"", labels[i].labelname, (long)(p - prop->data), off, name); } } int main(int argc, char *argv[]) { void *sohandle; void *fdt; int err; test_init(argc, argv); if (argc != 2) CONFIG("Usage: %s ", argv[0]); sohandle = dlopen(argv[1], RTLD_NOW); if (!sohandle) FAIL("Couldn't dlopen() %s", argv[1]); fdt = dlsym(sohandle, "dt_blob_start"); if (!fdt) FAIL("Couldn't locate \"dt_blob_start\" symbol in %s", argv[1]); err = fdt_check_header(fdt); if (err != 0) FAIL("%s contains invalid tree: %s", argv[1], fdt_strerror(err)); check_prop_labels(sohandle, fdt, "prop1", labels1, ARRAY_SIZE(labels1)); check_prop_labels(sohandle, fdt, "prop2", labels2, ARRAY_SIZE(labels2)); check_prop_labels(sohandle, fdt, "prop3", labels3, ARRAY_SIZE(labels3)); PASS(); }