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#include <stdbool.h>
#include <sys/resource.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/auxv.h>
#ifdef AT_PLATFORM
/* detect ARM ABI version will be optimized away if not used */
static inline bool need_armv_version(int atleastversion)
{
int version;
const char * platform = (const char *)getauxval(AT_PLATFORM);
if (platform == NULL)
return false;
/* at least v5 */
if (strlen(platform) < strlen("v5"))
return false;
if (*(platform++) != 'v')
return false;
char *endstr;
errno = 0;
version = strtol(platform,&endstr,10);
if (errno != 0)
return false;
if (endstr == platform)
return false;
return (version >= atleastversion);
}
#endif
const struct rlimit nocore = { 0, 0 };
/* emulate kill by signal */
void
termination_handler (int signum)
{
_exit(128+signum);
}
int main()
{
/* no core */
(void) setrlimit(RLIMIT_CORE, &nocore);
/* return instead */
struct sigaction new_action;
new_action.sa_handler = termination_handler;
(void) sigemptyset (&new_action.sa_mask);
new_action.sa_flags = 0;
(void) sigaction (SIGILL, &new_action, NULL);
(void) sigaction (SIGBUS, &new_action, NULL);
(void) sigaction (SIGSEGV, &new_action, NULL);
/* now test */
return !need_armv_version(6);;
return 0;
}
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