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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Test setjmp(), longjmp()
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*
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* Copyright (c) 2021, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*/
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#include <common.h>
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#include <test/lib.h>
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#include <test/test.h>
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#include <test/ut.h>
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#include <asm/setjmp.h>
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struct test_jmp_buf {
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jmp_buf env;
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int val;
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};
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/**
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* test_longjmp() - test longjmp function
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*
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* @i is passed to longjmp.
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* @i << 8 is set in the environment structure.
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*
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* @env: environment
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* @i: value passed to longjmp()
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*/
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static noinline void test_longjmp(struct test_jmp_buf *env, int i)
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{
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env->val = i << 8;
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longjmp(env->env, i);
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}
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/**
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* test_setjmp() - test setjmp function
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*
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* setjmp() will return the value @i passed to longjmp() if @i is non-zero.
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* For @i == 0 we expect return value 1.
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*
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* @i << 8 will be set by test_longjmp in the environment structure.
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* This value can be used to check that the stack frame is restored.
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*
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* We return the XORed values to allow simply check both at once.
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*
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* @i: value passed to longjmp()
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* Return: values return by longjmp()
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*/
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static int test_setjmp(int i)
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{
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struct test_jmp_buf env;
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int ret;
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env.val = -1;
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ret = setjmp(env.env);
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if (ret)
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return ret ^ env.val;
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test_longjmp(&env, i);
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/* We should not arrive here */
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return 0x1000;
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}
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static int lib_test_longjmp(struct unit_test_state *uts)
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{
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int i;
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for (i = -3; i < 0; ++i)
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ut_asserteq(i ^ (i << 8), test_setjmp(i));
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ut_asserteq(1, test_setjmp(0));
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for (i = 1; i < 4; ++i)
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ut_asserteq(i ^ (i << 8), test_setjmp(i));
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return 0;
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}
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LIB_TEST(lib_test_longjmp, 0);
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