1 /* 2 * libfdt - Flat Device Tree manipulation 3 * Test labels within values 4 * Copyright (C) 2008 David Gibson, IBM Corporation. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public License 8 * as published by the Free Software Foundation; either version 2.1 of 9 * the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #include <stdlib.h> 22 #include <stdio.h> 23 #include <string.h> 24 #include <stdint.h> 25 #include <errno.h> 26 27 #include <dlfcn.h> 28 29 #include <libfdt.h> 30 31 #include "tests.h" 32 #include "testdata.h" 33 34 struct val_label { 35 const char *labelname; 36 int propoff; 37 }; 38 39 static struct val_label labels1[] = { 40 { "start1", 0 }, 41 { "mid1", 2 }, 42 { "end1", -1 }, 43 }; 44 45 static struct val_label labels2[] = { 46 { "start2", 0 }, 47 { "innerstart2", 0 }, 48 { "innermid2", 4 }, 49 { "innerend2", -1 }, 50 { "end2", -1 }, 51 }; 52 53 static struct val_label labels3[] = { 54 { "start3", 0 }, 55 { "innerstart3", 0 }, 56 { "innermid3", 1 }, 57 { "innerend3", -1 }, 58 { "end3", -1 }, 59 }; 60 61 static void check_prop_labels(void *sohandle, void *fdt, const char *name, 62 const struct val_label* labels, int n) 63 { 64 const struct fdt_property *prop; 65 const char *p; 66 int len; 67 int i; 68 69 prop = fdt_get_property(fdt, 0, name, &len); 70 if (!prop) 71 FAIL("Couldn't locate property \"%s\"", name); 72 73 p = dlsym(sohandle, name); 74 if (!p) 75 FAIL("Couldn't locate label symbol \"%s\"", name); 76 77 if (p != (const char *)prop) 78 FAIL("Label \"%s\" does not point to correct property", name); 79 80 for (i = 0; i < n; i++) { 81 int off = labels[i].propoff; 82 83 if (off == -1) 84 off = len; 85 86 p = dlsym(sohandle, labels[i].labelname); 87 if (!p) 88 FAIL("Couldn't locate label symbol \"%s\"", name); 89 90 if ((p - prop->data) != off) 91 FAIL("Label \"%s\" points to offset %ld instead of %d" 92 "in property \"%s\"", labels[i].labelname, 93 (long)(p - prop->data), off, name); 94 } 95 } 96 97 int main(int argc, char *argv[]) 98 { 99 void *sohandle; 100 void *fdt; 101 int err; 102 103 test_init(argc, argv); 104 if (argc != 2) 105 CONFIG("Usage: %s <so file>", argv[0]); 106 107 sohandle = dlopen(argv[1], RTLD_NOW); 108 if (!sohandle) 109 FAIL("Couldn't dlopen() %s", argv[1]); 110 111 fdt = dlsym(sohandle, "dt_blob_start"); 112 if (!fdt) 113 FAIL("Couldn't locate \"dt_blob_start\" symbol in %s", 114 argv[1]); 115 116 err = fdt_check_header(fdt); 117 if (err != 0) 118 FAIL("%s contains invalid tree: %s", argv[1], 119 fdt_strerror(err)); 120 121 122 check_prop_labels(sohandle, fdt, "prop1", labels1, ARRAY_SIZE(labels1)); 123 check_prop_labels(sohandle, fdt, "prop2", labels2, ARRAY_SIZE(labels2)); 124 check_prop_labels(sohandle, fdt, "prop3", labels3, ARRAY_SIZE(labels3)); 125 126 PASS(); 127 } 128
