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/* See LICENSE file for copyright and license details. */
#include "../libsyscalls.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(__clang__)
# pragma clang diagnostic ignored "-Wunsafe-buffer-usage" /* clang is just being silly */
#endif
static void
make_hex(char *out, const char *in, size_t n)
{
for (; n--; in++) {
*out++ = "0123456789ABCDEF"[((unsigned)*in >> 4) & 0xFU];
*out++ = "0123456789ABCDEF"[((unsigned)*in >> 0) & 0xFU];
}
*out = '\0';
}
int
main(int argc, char **argv)
{
struct libsyscalls_datatype_description type;
char *data, *end, *text0, *text1;
size_t dataoff, i, datasize;
unsigned long long int value;
enum libsyscalls_error err;
_Static_assert(CHAR_BIT, "We only support 8-bit char at the moment in testutil/to-tracee-endian.c");
if (argc < 5) {
usage:
fprintf(stderr, "usage error\n");
return 1;
}
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion"
#endif
errno = 0;
value = strtoull(argv[1], &end, 16);
if (errno || *end)
goto usage;
dataoff = (size_t)atol(argv[2]);
type.width_in_bits = (unsigned short int)atoi(argv[3]);
argv = &argv[4];
i = 0;
for (; argv[i] && i < sizeof(type.byteorder) / sizeof(*type.byteorder); i++)
type.byteorder[i] = (unsigned)atoi(argv[i]);
if (argv[i])
goto usage;
for (; i < sizeof(type.byteorder) / sizeof(*type.byteorder); i++) {
type.byteorder[i] = 0U;
type.byteorder[i] = ~type.byteorder[i];
}
#if defined(__clang__)
# pragma GCC diagnostic pop
#endif
datasize = ((size_t)type.width_in_bits + dataoff + 7UL) / 8UL;
data = malloc(datasize);
text0 = malloc(datasize * 2UL + 1UL);
text1 = malloc(datasize * 2UL + 1UL);
memset(data, 0, datasize);
err = libsyscalls_to_tracee_endian(value, &type, data, dataoff);
if (err == LIBSYSCALLS_E_INVAL) {
printf("inval\n");
free(data);
goto out;
} else if (err) {
libsyscalls_perror(NULL, err);
return 1;
}
make_hex(text0, data, datasize);
memset(data, ~0, datasize);
err = libsyscalls_to_tracee_endian(value, &type, data, dataoff);
if (err == LIBSYSCALLS_E_INVAL) {
printf("inval\n");
free(data);
goto out;
} else if (err) {
libsyscalls_perror(NULL, err);
return 1;
}
make_hex(text1, data, datasize);
free(data);
printf("%s %s\n", text0, text1);
free(text0);
free(text1);
out:
if (fflush(stdout) || fclose(stdout)) {
perror(NULL);
return 1;
}
return 0;
}
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