svn commit: r328633 - head/lib/libc/tests/gen

[John Baldwin]

Author: jhb
Date: Wed Jan 31 18:02:02 2018
New Revision: 328633
URL: https://svnweb.freebsd.org/changeset/base/328633

Log:
  Add a new set of simple tests for makecontext().
  
  In contrast to the existing NetBSD setcontext_link test, these tests
  verify that passing from 1 to 6 arguments through to the callback function
  work correctly which can be useful for testing ABIs which split arguments
  between registers and the stack.
  
  Sponsored by:	DARPA / AFRL

Added:
  head/lib/libc/tests/gen/makecontext_test.c   (contents, props changed)
Modified:
  head/lib/libc/tests/gen/Makefile

Modified: head/lib/libc/tests/gen/Makefile
==============================================================================
--- head/lib/libc/tests/gen/Makefile	Wed Jan 31 18:00:23 2018	(r328632)
+++ head/lib/libc/tests/gen/Makefile	Wed Jan 31 18:02:02 2018	(r328633)
@@ -12,6 +12,7 @@ ATF_TESTS_C+=		fpclassify2_test
 ATF_TESTS_C+=		ftw_test
 ATF_TESTS_C+=		getmntinfo_test
 ATF_TESTS_C+=		glob2_test
+ATF_TESTS_C+=		makecontext_test
 ATF_TESTS_C+=		popen_test
 ATF_TESTS_C+=		posix_spawn_test
 ATF_TESTS_C+=		realpath2_test

Added: head/lib/libc/tests/gen/makecontext_test.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/lib/libc/tests/gen/makecontext_test.c	Wed Jan 31 18:02:02 2018	(r328633)
@@ -0,0 +1,189 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2018 John H. Baldwin <jhb at FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <atf-c.h>
+#include <ucontext.h>
+
+static char uc_stack[16 * 1024];
+
+static void
+check_1(int arg1)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg1);
+ATF_TC_BODY(makecontext_arg1, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_1, 1, 1);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+static void
+check_2(int arg1, int arg2)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+	ATF_REQUIRE_EQ(arg2, 2);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg2);
+ATF_TC_BODY(makecontext_arg2, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_2, 2, 1, 2);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+static void
+check_3(int arg1, int arg2, int arg3)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+	ATF_REQUIRE_EQ(arg2, 2);
+	ATF_REQUIRE_EQ(arg3, 3);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg3);
+ATF_TC_BODY(makecontext_arg3, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_3, 3, 1, 2, 3);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+static void
+check_4(int arg1, int arg2, int arg3, int arg4)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+	ATF_REQUIRE_EQ(arg2, 2);
+	ATF_REQUIRE_EQ(arg3, 3);
+	ATF_REQUIRE_EQ(arg4, 4);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg4);
+ATF_TC_BODY(makecontext_arg4, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_4, 4, 1, 2, 3, 4);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+static void
+check_5(int arg1, int arg2, int arg3, int arg4, int arg5)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+	ATF_REQUIRE_EQ(arg2, 2);
+	ATF_REQUIRE_EQ(arg3, 3);
+	ATF_REQUIRE_EQ(arg4, 4);
+	ATF_REQUIRE_EQ(arg5, 5);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg5);
+ATF_TC_BODY(makecontext_arg5, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_5, 5, 1, 2, 3, 4, 5);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+static void
+check_6(int arg1, int arg2, int arg3, int arg4, int arg5, int arg6)
+{
+
+	ATF_REQUIRE_EQ(arg1, 1);
+	ATF_REQUIRE_EQ(arg2, 2);
+	ATF_REQUIRE_EQ(arg3, 3);
+	ATF_REQUIRE_EQ(arg4, 4);
+	ATF_REQUIRE_EQ(arg5, 5);
+	ATF_REQUIRE_EQ(arg6, 6);
+}
+
+ATF_TC_WITHOUT_HEAD(makecontext_arg6);
+ATF_TC_BODY(makecontext_arg6, tc)
+{
+	ucontext_t ctx[2];
+
+	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
+	ctx[1].uc_stack.ss_sp = uc_stack;
+	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
+	ctx[1].uc_link = &ctx[0];
+	makecontext(&ctx[1], (void (*)(void))check_6, 6, 1, 2, 3, 4, 5, 6);
+
+	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, makecontext_arg1);
+	ATF_TP_ADD_TC(tp, makecontext_arg2);
+	ATF_TP_ADD_TC(tp, makecontext_arg3);
+	ATF_TP_ADD_TC(tp, makecontext_arg4);
+	ATF_TP_ADD_TC(tp, makecontext_arg5);
+	ATF_TP_ADD_TC(tp, makecontext_arg6);
+
+	return (atf_no_error());
+}