t_getcontext.c revision 272343
1272343Sngie/* $NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $ */ 2272343Sngie 3272343Sngie/*- 4272343Sngie * Copyright (c) 2008 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * Redistribution and use in source and binary forms, with or without 8272343Sngie * modification, are permitted provided that the following conditions 9272343Sngie * are met: 10272343Sngie * 1. Redistributions of source code must retain the above copyright 11272343Sngie * notice, this list of conditions and the following disclaimer. 12272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 13272343Sngie * notice, this list of conditions and the following disclaimer in the 14272343Sngie * documentation and/or other materials provided with the distribution. 15272343Sngie * 16272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26272343Sngie * POSSIBILITY OF SUCH DAMAGE. 27272343Sngie */ 28272343Sngie 29272343Sngie#include <sys/cdefs.h> 30272343Sngie__COPYRIGHT("@(#) Copyright (c) 2008\ 31272343Sngie The NetBSD Foundation, inc. All rights reserved."); 32272343Sngie__RCSID("$NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $"); 33272343Sngie 34272343Sngie#include <atf-c.h> 35272343Sngie#include <errno.h> 36272343Sngie#include <stdarg.h> 37272343Sngie#include <stdlib.h> 38272343Sngie#include <ucontext.h> 39272343Sngie 40272343Sngie#define STACKSZ (10*1024) 41272343Sngie#define DEPTH 3 42272343Sngie 43272343Sngiestatic int calls; 44272343Sngie 45272343Sngiestatic void 46272343Sngierun(int n, ...) 47272343Sngie{ 48272343Sngie va_list va; 49272343Sngie int i, ia; 50272343Sngie 51272343Sngie ATF_REQUIRE_EQ(n, DEPTH - calls - 1); 52272343Sngie 53272343Sngie va_start(va, n); 54272343Sngie for (i = 0; i < 9; i++) { 55272343Sngie ia = va_arg(va, int); 56272343Sngie ATF_REQUIRE_EQ(i, ia); 57272343Sngie } 58272343Sngie va_end(va); 59272343Sngie 60272343Sngie calls++; 61272343Sngie} 62272343Sngie 63272343SngieATF_TC(getcontext_err); 64272343SngieATF_TC_HEAD(getcontext_err, tc) 65272343Sngie{ 66272343Sngie atf_tc_set_md_var(tc, "descr", "Test errors from getcontext(2)"); 67272343Sngie} 68272343Sngie 69272343SngieATF_TC_BODY(getcontext_err, tc) 70272343Sngie{ 71272343Sngie 72272343Sngie errno = 0; 73272343Sngie ATF_REQUIRE_ERRNO(EFAULT, getcontext((void *)-1) == -1); 74272343Sngie} 75272343Sngie 76272343SngieATF_TC(setcontext_err); 77272343SngieATF_TC_HEAD(setcontext_err, tc) 78272343Sngie{ 79272343Sngie atf_tc_set_md_var(tc, "descr", "Test errors from setcontext(2)"); 80272343Sngie} 81272343Sngie 82272343SngieATF_TC_BODY(setcontext_err, tc) 83272343Sngie{ 84272343Sngie 85272343Sngie errno = 0; 86272343Sngie ATF_REQUIRE_ERRNO(EFAULT, setcontext((void *)-1) == -1); 87272343Sngie} 88272343Sngie 89272343SngieATF_TC(setcontext_link); 90272343SngieATF_TC_HEAD(setcontext_link, tc) 91272343Sngie{ 92272343Sngie 93272343Sngie atf_tc_set_md_var(tc, "descr", 94272343Sngie "Checks get/make/setcontext(), context linking via uc_link(), " 95272343Sngie "and argument passing to the new context"); 96272343Sngie} 97272343Sngie 98272343SngieATF_TC_BODY(setcontext_link, tc) 99272343Sngie{ 100272343Sngie ucontext_t uc[DEPTH]; 101272343Sngie ucontext_t save; 102272343Sngie volatile int i = 0; /* avoid longjmp clobbering */ 103272343Sngie 104272343Sngie for (i = 0; i < DEPTH; ++i) { 105272343Sngie ATF_REQUIRE_EQ(getcontext(&uc[i]), 0); 106272343Sngie 107272343Sngie uc[i].uc_stack.ss_sp = malloc(STACKSZ); 108272343Sngie uc[i].uc_stack.ss_size = STACKSZ; 109272343Sngie uc[i].uc_link = (i > 0) ? &uc[i - 1] : &save; 110272343Sngie 111272343Sngie makecontext(&uc[i], (void *)run, 10, i, 112272343Sngie 0, 1, 2, 3, 4, 5, 6, 7, 8); 113272343Sngie } 114272343Sngie 115272343Sngie ATF_REQUIRE_EQ(getcontext(&save), 0); 116272343Sngie 117272343Sngie if (calls == 0) 118272343Sngie ATF_REQUIRE_EQ(setcontext(&uc[DEPTH-1]), 0); 119272343Sngie} 120272343Sngie 121272343SngieATF_TP_ADD_TCS(tp) 122272343Sngie{ 123272343Sngie 124272343Sngie ATF_TP_ADD_TC(tp, getcontext_err); 125272343Sngie ATF_TP_ADD_TC(tp, setcontext_err); 126272343Sngie ATF_TP_ADD_TC(tp, setcontext_link); 127272343Sngie 128272343Sngie return atf_no_error(); 129272343Sngie} 130