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Diffstat (limited to 'apps/examples/nxflat/tests/longjmp/longjmp.c')
-rw-r--r-- | apps/examples/nxflat/tests/longjmp/longjmp.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/apps/examples/nxflat/tests/longjmp/longjmp.c b/apps/examples/nxflat/tests/longjmp/longjmp.c new file mode 100644 index 000000000..b5b317d99 --- /dev/null +++ b/apps/examples/nxflat/tests/longjmp/longjmp.c @@ -0,0 +1,128 @@ +/**************************************************************************** + * examples/nxflat/tests/longjmp/longjmp.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 + * COPYRIGHT OWNER 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdio.h> +#include <setjmp.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define MAIN_VAL 47 +#define FUNC_VAL 92 +#define LEAF_VAL 163 + +#define FUNCTION_ARG MAIN_VAL +#define LEAF_ARG (FUNCTION_ARG + FUNC_VAL) +#define SETJMP_RETURN (LEAF_ARG + LEAF_VAL) + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static jmp_buf env; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +static int leaf(int *some_arg) +{ + int some_local_variable = *some_arg + LEAF_VAL; + + printf("leaf: received %d\n", *some_arg); + + if (*some_arg != LEAF_ARG) + printf("leaf: ERROR: expected %d\n", LEAF_ARG); + + printf("leaf: Calling longjmp() with %d\n", some_local_variable); + + longjmp(env, some_local_variable); +} + +static int function(int some_arg) +{ + int some_local_variable = some_arg + FUNC_VAL; + int retval; + + printf("function: received %d\n", some_arg); + + if (some_arg != FUNCTION_ARG) + printf("function: ERROR: expected %d\n", FUNCTION_ARG); + + printf("function: Calling leaf() with %d\n", some_local_variable); + + retval = leaf(&some_local_variable); + + printf("function: ERROR -- leaf returned!\n"); + return retval; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +int main(int argc, char **argv) +{ + int value; + + printf("main: Calling setjmp\n"); + value = setjmp(env); + printf("main: setjmp returned %d\n", value); + + if (value == 0) + { + printf("main: Normal setjmp return\n"); + printf("main: Calling function with %d\n", MAIN_VAL); + function(MAIN_VAL); + printf("main: ERROR -- function returned!\n"); + return 1; + } + else if (value != SETJMP_RETURN) + { + printf("main: ERROR: Expected %d\n", SETJMP_RETURN); + return 1; + } + else + { + printf("main: SUCCESS: setjmp return from longjmp call\n"); + return 0; + } +} + |