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Test the initjmp() function when HAVE_INITJMP is set. Use the test as an example in the API documentation. Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2025 Linaro Limited
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*
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* Unit test for initjmp()
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*/
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#include <compiler.h>
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#include <setjmp.h>
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#include <stdbool.h>
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#include <test/lib.h>
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#include <test/ut.h>
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#include <vsprintf.h>
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static bool ep_entered;
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static jmp_buf return_buf;
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static void __noreturn entrypoint(void)
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{
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ep_entered = true;
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/* Jump back to the main routine */
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longjmp(return_buf, 1);
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/* Not reached */
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panic("longjmp failed\n");
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}
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static int lib_initjmp(struct unit_test_state *uts)
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{
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int ret;
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void *stack;
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jmp_buf buf;
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/* Arbitrary but smaller values (< page size?) fail on SANDBOX */
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size_t stack_sz = 8192;
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(void)entrypoint;
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ep_entered = false;
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stack = malloc(stack_sz);
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ut_assertnonnull(stack);
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/*
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* Prepare return_buf so that entrypoint may jump back just after the
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* if()
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*/
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if (!setjmp(return_buf)) {
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/* return_buf initialized, entrypoint not yet called */
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/*
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* Prepare another jump buffer to jump into entrypoint with the
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* given stack
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*/
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ret = initjmp(buf, entrypoint, stack, stack_sz);
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ut_assertok(ret);
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/* Jump into entrypoint */
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longjmp(buf, 1);
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/*
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* Not reached since entrypoint is expected to branch after
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* the if()
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*/
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ut_assert(false);
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}
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ut_assert(ep_entered);
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free(stack);
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return 0;
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}
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LIB_TEST(lib_initjmp, 0);
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