path: root/testutil/unsection-value.c

/* See LICENSE file for copyright and license details. */
#include "../libsyscalls.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

#if defined(__clang__)
# pragma clang diagnostic ignored "-Wunsafe-buffer-usage" /* clang is just being silly */
#endif


int
main(int argc, char **argv)
{
	enum libsyscalls_datatype_section section;
	unsigned long long int value;
	size_t bits;
	char *end;
	enum libsyscalls_error err;

	if (argc != 4) {
	usage:
		fprintf(stderr, "usage error\n");
		return 1;
	}

	section = (enum libsyscalls_datatype_section)atoi(argv[1]);
	errno = 0;
	value = strtoull(argv[2], &end, 16);
	if (errno || *end)
		goto usage;
	bits = (size_t)atol(argv[3]);

	err = libsyscalls_unsection_value(value, bits, section, &value);
	if (err == LIBSYSCALLS_E_INVAL) {
		printf("inval\n");
		goto out;
	} else if (err) {
		fprintf(stderr, "unsection-value %s %s %s: ", argv[1], argv[2], argv[3]);
		libsyscalls_perror(NULL, err);
		return 1;
	}

	printf("%llX\n", value);

out:
	if (fflush(stdout) || fclose(stdout)) {
		perror(NULL);
		return 1;
	}
	return 0;
}