1 /* $NetBSD: t_backtrace.c,v 1.5 2012/06/02 14:52:28 njoly Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_backtrace.c,v 1.5 2012/06/02 14:52:28 njoly Exp $"); 33 34 #include <atf-c.h> 35 #include <atf-c/config.h> 36 #include <string.h> 37 #include <stdlib.h> 38 #include <execinfo.h> 39 40 #ifndef __arraycount 41 #define __arraycount(a) (sizeof(a) / sizeof(a[0])) 42 #endif 43 44 static void __attribute__((__noinline__)) 45 myfunc3(size_t ncalls) 46 { 47 static const char *top[] = { "myfunc", "atfu_backtrace_fmt_basic_body", 48 "atf_tc_run", "atf_tp_main", "main", "___start" }; 49 size_t j, nptrs; 50 void *buffer[ncalls + 10]; 51 char **strings; 52 53 nptrs = backtrace(buffer, __arraycount(buffer)); 54 ATF_REQUIRE_EQ(nptrs, ncalls + 8); 55 56 strings = backtrace_symbols_fmt(buffer, nptrs, "%n"); 57 58 ATF_CHECK(strings != NULL); 59 ATF_CHECK_STREQ(strings[0], "myfunc3"); 60 ATF_CHECK_STREQ(strings[1], "myfunc2"); 61 62 for (j = 2; j < ncalls + 2; j++) 63 ATF_CHECK_STREQ(strings[j], "myfunc1"); 64 65 for (size_t i = 0; j < nptrs; i++, j++) 66 ATF_CHECK_STREQ(strings[j], top[i]); 67 68 free(strings); 69 } 70 71 static void __attribute__((__noinline__)) 72 myfunc2(size_t ncalls) 73 { 74 myfunc3(ncalls); 75 } 76 77 static void __attribute__((__noinline__)) 78 myfunc1(size_t origcalls, size_t ncalls) 79 { 80 if (ncalls > 1) 81 myfunc1(origcalls, ncalls - 1); 82 else 83 myfunc2(origcalls); 84 } 85 86 static void __attribute__((__noinline__)) 87 myfunc(size_t ncalls) 88 { 89 myfunc1(ncalls, ncalls); 90 } 91 92 ATF_TC(backtrace_fmt_basic); 93 ATF_TC_HEAD(backtrace_fmt_basic, tc) 94 { 95 atf_tc_set_md_var(tc, "descr", "Test backtrace_fmt(3)"); 96 } 97 98 ATF_TC_BODY(backtrace_fmt_basic, tc) 99 { 100 const char *arch = atf_config_get("atf_arch"); 101 102 if (strcmp(arch, "x86_64") != 0) 103 atf_tc_skip("PR toolchain/46490: libexecinfo only" 104 " works on amd64 currently"); 105 106 myfunc(12); 107 } 108 109 ATF_TP_ADD_TCS(tp) 110 { 111 112 ATF_TP_ADD_TC(tp, backtrace_fmt_basic); 113 114 return atf_no_error(); 115 } 116