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Add a new set of simple tests for makecontext().

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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
This commit is contained in:
John Baldwin 2018-01-31 18:02:02 +00:00
parent b16fa5e718
commit acf1f71044
2 changed files with 190 additions and 0 deletions
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1
lib/libc/tests/gen/Makefile
View File

@ -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

189
lib/libc/tests/gen/makecontext_test.c Normal file
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@ -0,0 +1,189 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2018 John H. Baldwin <jhb@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());
}