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#include "mte.h"
void pass(int sig, siginfo_t *info, void *uc)
{
assert(info->si_code == SEGV_MTESERR);
exit(0);
}
int main(void)
{
enable_mte(PR_MTE_TCF_SYNC);
void *brk = sbrk(16);
if (brk == (void *)-1) {
perror("sbrk");
return 2;
}
if (mprotect(brk, 16, PROT_READ | PROT_WRITE | PROT_MTE)) {
perror("mprotect");
return 2;
}
int *p1, *p2;
long excl = 1;
asm("irg %0,%1,%2" : "=r"(p1) : "r"(brk), "r"(excl));
asm("gmi %0,%1,%0" : "+r"(excl) : "r"(p1));
asm("irg %0,%1,%2" : "=r"(p2) : "r"(brk), "r"(excl));
asm("stg %0,[%0]" : : "r"(p1));
*p1 = 0;
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_sigaction = pass;
sa.sa_flags = SA_SIGINFO;
sigaction(SIGSEGV, &sa, NULL);
*p2 = 0;
abort();
}
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